drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2012 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/idr.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/module.h>
  28 #include <linux/kthread.h>
  29 #include <linux/pci.h>
  30 #include <linux/spinlock.h>
  31 #include <linux/ctype.h>
  32 #include <linux/aer.h>
  33 #include <linux/slab.h>
  34 #include <linux/firmware.h>
  35 #include <linux/miscdevice.h>
  36
  37 #include <scsi/scsi.h>
  38 #include <scsi/scsi_device.h>
  39 #include <scsi/scsi_host.h>
  40 #include <scsi/scsi_transport_fc.h>
  41
  42 #include "lpfc_hw4.h"
  43 #include "lpfc_hw.h"
  44 #include "lpfc_sli.h"
  45 #include "lpfc_sli4.h"
  46 #include "lpfc_nl.h"
  47 #include "lpfc_disc.h"
  48 #include "lpfc_scsi.h"
  49 #include "lpfc.h"
  50 #include "lpfc_logmsg.h"
  51 #include "lpfc_crtn.h"
  52 #include "lpfc_vport.h"
  53 #include "lpfc_version.h"
  54
  55 char *_dump_buf_data;
  56 unsigned long _dump_buf_data_order;
  57 char *_dump_buf_dif;
  58 unsigned long _dump_buf_dif_order;
  59 spinlock_t _dump_buf_lock;
  60
  61 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  62 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  63 static int lpfc_sli4_queue_verify(struct lpfc_hba *);
  64 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  65 static int lpfc_setup_endian_order(struct lpfc_hba *);
  66 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  67 static void lpfc_free_els_sgl_list(struct lpfc_hba *);
  68 static void lpfc_init_sgl_list(struct lpfc_hba *);
  69 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  70 static void lpfc_free_active_sgl(struct lpfc_hba *);
  71 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  72 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  73 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  74 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  75 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  76 static void lpfc_sli4_disable_intr(struct lpfc_hba *);
  77 static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *, uint32_t);
  78
  79 static struct scsi_transport_template *lpfc_transport_template = NULL;
  80 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
  81 static DEFINE_IDR(lpfc_hba_index);
  82
  83 /**
  84  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
  85  * @phba: pointer to lpfc hba data structure.
  86  *
  87  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
  88  * mailbox command. It retrieves the revision information from the HBA and
  89  * collects the Vital Product Data (VPD) about the HBA for preparing the
  90  * configuration of the HBA.
  91  *
  92  * Return codes:
  93  *   0 - success.
  94  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
  95  *   Any other value - indicates an error.
  96  **/
  97 int
  98 lpfc_config_port_prep(struct lpfc_hba *phba)
  99 {
 100         lpfc_vpd_t *vp = &phba->vpd;
 101         int i = 0, rc;
 102         LPFC_MBOXQ_t *pmb;
 103         MAILBOX_t *mb;
 104         char *lpfc_vpd_data = NULL;
 105         uint16_t offset = 0;
 106         static char licensed[56] =
 107                     "key unlock for use with gnu public licensed code only\0";
 108         static int init_key = 1;
 109
 110         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 111         if (!pmb) {
 112                 phba->link_state = LPFC_HBA_ERROR;
 113                 return -ENOMEM;
 114         }
 115
 116         mb = &pmb->u.mb;
 117         phba->link_state = LPFC_INIT_MBX_CMDS;
 118
 119         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 120                 if (init_key) {
 121                         uint32_t *ptext = (uint32_t *) licensed;
 122
 123                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 124                                 *ptext = cpu_to_be32(*ptext);
 125                         init_key = 0;
 126                 }
 127
 128                 lpfc_read_nv(phba, pmb);
 129                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 130                         sizeof (mb->un.varRDnvp.rsvd3));
 131                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 132                          sizeof (licensed));
 133
 134                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 135
 136                 if (rc != MBX_SUCCESS) {
 137                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 138                                         "0324 Config Port initialization "
 139                                         "error, mbxCmd x%x READ_NVPARM, "
 140                                         "mbxStatus x%x\n",
 141                                         mb->mbxCommand, mb->mbxStatus);
 142                         mempool_free(pmb, phba->mbox_mem_pool);
 143                         return -ERESTART;
 144                 }
 145                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 146                        sizeof(phba->wwnn));
 147                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 148                        sizeof(phba->wwpn));
 149         }
 150
 151         phba->sli3_options = 0x0;
 152
 153         /* Setup and issue mailbox READ REV command */
 154         lpfc_read_rev(phba, pmb);
 155         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 156         if (rc != MBX_SUCCESS) {
 157                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 158                                 "0439 Adapter failed to init, mbxCmd x%x "
 159                                 "READ_REV, mbxStatus x%x\n",
 160                                 mb->mbxCommand, mb->mbxStatus);
 161                 mempool_free( pmb, phba->mbox_mem_pool);
 162                 return -ERESTART;
 163         }
 164
 165
 166         /*
 167          * The value of rr must be 1 since the driver set the cv field to 1.
 168          * This setting requires the FW to set all revision fields.
 169          */
 170         if (mb->un.varRdRev.rr == 0) {
 171                 vp->rev.rBit = 0;
 172                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 173                                 "0440 Adapter failed to init, READ_REV has "
 174                                 "missing revision information.\n");
 175                 mempool_free(pmb, phba->mbox_mem_pool);
 176                 return -ERESTART;
 177         }
 178
 179         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 180                 mempool_free(pmb, phba->mbox_mem_pool);
 181                 return -EINVAL;
 182         }
 183
 184         /* Save information as VPD data */
 185         vp->rev.rBit = 1;
 186         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 187         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 188         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 189         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 190         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 191         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 192         vp->rev.smRev = mb->un.varRdRev.smRev;
 193         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 194         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 195         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 196         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 197         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 198         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 199         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 200         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 201
 202         /* If the sli feature level is less then 9, we must
 203          * tear down all RPIs and VPIs on link down if NPIV
 204          * is enabled.
 205          */
 206         if (vp->rev.feaLevelHigh < 9)
 207                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 208
 209         if (lpfc_is_LC_HBA(phba->pcidev->device))
 210                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 211                                                 sizeof (phba->RandomData));
 212
 213         /* Get adapter VPD information */
 214         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 215         if (!lpfc_vpd_data)
 216                 goto out_free_mbox;
 217         do {
 218                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 219                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 220
 221                 if (rc != MBX_SUCCESS) {
 222                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 223                                         "0441 VPD not present on adapter, "
 224                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 225                                         mb->mbxCommand, mb->mbxStatus);
 226                         mb->un.varDmp.word_cnt = 0;
 227                 }
 228                 /* dump mem may return a zero when finished or we got a
 229                  * mailbox error, either way we are done.
 230                  */
 231                 if (mb->un.varDmp.word_cnt == 0)
 232                         break;
 233                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 234                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 235                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 236                                       lpfc_vpd_data + offset,
 237                                       mb->un.varDmp.word_cnt);
 238                 offset += mb->un.varDmp.word_cnt;
 239         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 240         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 241
 242         kfree(lpfc_vpd_data);
 243 out_free_mbox:
 244         mempool_free(pmb, phba->mbox_mem_pool);
 245         return 0;
 246 }
 247
 248 /**
 249  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 250  * @phba: pointer to lpfc hba data structure.
 251  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 252  *
 253  * This is the completion handler for driver's configuring asynchronous event
 254  * mailbox command to the device. If the mailbox command returns successfully,
 255  * it will set internal async event support flag to 1; otherwise, it will
 256  * set internal async event support flag to 0.
 257  **/
 258 static void
 259 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 260 {
 261         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 262                 phba->temp_sensor_support = 1;
 263         else
 264                 phba->temp_sensor_support = 0;
 265         mempool_free(pmboxq, phba->mbox_mem_pool);
 266         return;
 267 }
 268
 269 /**
 270  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 271  * @phba: pointer to lpfc hba data structure.
 272  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 273  *
 274  * This is the completion handler for dump mailbox command for getting
 275  * wake up parameters. When this command complete, the response contain
 276  * Option rom version of the HBA. This function translate the version number
 277  * into a human readable string and store it in OptionROMVersion.
 278  **/
 279 static void
 280 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 281 {
 282         struct prog_id *prg;
 283         uint32_t prog_id_word;
 284         char dist = ' ';
 285         /* character array used for decoding dist type. */
 286         char dist_char[] = "nabx";
 287
 288         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 289                 mempool_free(pmboxq, phba->mbox_mem_pool);
 290                 return;
 291         }
 292
 293         prg = (struct prog_id *) &prog_id_word;
 294
 295         /* word 7 contain option rom version */
 296         prog_id_word = pmboxq->u.mb.un.varWords[7];
 297
 298         /* Decode the Option rom version word to a readable string */
 299         if (prg->dist < 4)
 300                 dist = dist_char[prg->dist];
 301
 302         if ((prg->dist == 3) && (prg->num == 0))
 303                 sprintf(phba->OptionROMVersion, "%d.%d%d",
 304                         prg->ver, prg->rev, prg->lev);
 305         else
 306                 sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
 307                         prg->ver, prg->rev, prg->lev,
 308                         dist, prg->num);
 309         mempool_free(pmboxq, phba->mbox_mem_pool);
 310         return;
 311 }
 312
 313 /**
 314  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 315  *      cfg_soft_wwnn, cfg_soft_wwpn
 316  * @vport: pointer to lpfc vport data structure.
 317  *
 318  *
 319  * Return codes
 320  *   None.
 321  **/
 322 void
 323 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 324 {
 325         /* If the soft name exists then update it using the service params */
 326         if (vport->phba->cfg_soft_wwnn)
 327                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
 328                            vport->fc_sparam.nodeName.u.wwn);
 329         if (vport->phba->cfg_soft_wwpn)
 330                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
 331                            vport->fc_sparam.portName.u.wwn);
 332
 333         /*
 334          * If the name is empty or there exists a soft name
 335          * then copy the service params name, otherwise use the fc name
 336          */
 337         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
 338                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 339                         sizeof(struct lpfc_name));
 340         else
 341                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 342                         sizeof(struct lpfc_name));
 343
 344         if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn)
 345                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 346                         sizeof(struct lpfc_name));
 347         else
 348                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 349                         sizeof(struct lpfc_name));
 350 }
 351
 352 /**
 353  * lpfc_config_port_post - Perform lpfc initialization after config port
 354  * @phba: pointer to lpfc hba data structure.
 355  *
 356  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 357  * command call. It performs all internal resource and state setups on the
 358  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 359  * ELS ring timers, etc.
 360  *
 361  * Return codes
 362  *   0 - success.
 363  *   Any other value - error.
 364  **/
 365 int
 366 lpfc_config_port_post(struct lpfc_hba *phba)
 367 {
 368         struct lpfc_vport *vport = phba->pport;
 369         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 370         LPFC_MBOXQ_t *pmb;
 371         MAILBOX_t *mb;
 372         struct lpfc_dmabuf *mp;
 373         struct lpfc_sli *psli = &phba->sli;
 374         uint32_t status, timeout;
 375         int i, j;
 376         int rc;
 377
 378         spin_lock_irq(&phba->hbalock);
 379         /*
 380          * If the Config port completed correctly the HBA is not
 381          * over heated any more.
 382          */
 383         if (phba->over_temp_state == HBA_OVER_TEMP)
 384                 phba->over_temp_state = HBA_NORMAL_TEMP;
 385         spin_unlock_irq(&phba->hbalock);
 386
 387         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 388         if (!pmb) {
 389                 phba->link_state = LPFC_HBA_ERROR;
 390                 return -ENOMEM;
 391         }
 392         mb = &pmb->u.mb;
 393
 394         /* Get login parameters for NID.  */
 395         rc = lpfc_read_sparam(phba, pmb, 0);
 396         if (rc) {
 397                 mempool_free(pmb, phba->mbox_mem_pool);
 398                 return -ENOMEM;
 399         }
 400
 401         pmb->vport = vport;
 402         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 403                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 404                                 "0448 Adapter failed init, mbxCmd x%x "
 405                                 "READ_SPARM mbxStatus x%x\n",
 406                                 mb->mbxCommand, mb->mbxStatus);
 407                 phba->link_state = LPFC_HBA_ERROR;
 408                 mp = (struct lpfc_dmabuf *) pmb->context1;
 409                 mempool_free(pmb, phba->mbox_mem_pool);
 410                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 411                 kfree(mp);
 412                 return -EIO;
 413         }
 414
 415         mp = (struct lpfc_dmabuf *) pmb->context1;
 416
 417         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 418         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 419         kfree(mp);
 420         pmb->context1 = NULL;
 421         lpfc_update_vport_wwn(vport);
 422
 423         /* Update the fc_host data structures with new wwn. */
 424         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 425         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 426         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 427
 428         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 429         /* This should be consolidated into parse_vpd ? - mr */
 430         if (phba->SerialNumber[0] == 0) {
 431                 uint8_t *outptr;
 432
 433                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 434                 for (i = 0; i < 12; i++) {
 435                         status = *outptr++;
 436                         j = ((status & 0xf0) >> 4);
 437                         if (j <= 9)
 438                                 phba->SerialNumber[i] =
 439                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 440                         else
 441                                 phba->SerialNumber[i] =
 442                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 443                         i++;
 444                         j = (status & 0xf);
 445                         if (j <= 9)
 446                                 phba->SerialNumber[i] =
 447                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 448                         else
 449                                 phba->SerialNumber[i] =
 450                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 451                 }
 452         }
 453
 454         lpfc_read_config(phba, pmb);
 455         pmb->vport = vport;
 456         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 457                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 458                                 "0453 Adapter failed to init, mbxCmd x%x "
 459                                 "READ_CONFIG, mbxStatus x%x\n",
 460                                 mb->mbxCommand, mb->mbxStatus);
 461                 phba->link_state = LPFC_HBA_ERROR;
 462                 mempool_free( pmb, phba->mbox_mem_pool);
 463                 return -EIO;
 464         }
 465
 466         /* Check if the port is disabled */
 467         lpfc_sli_read_link_ste(phba);
 468
 469         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 470         if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
 471                 phba->cfg_hba_queue_depth =
 472                         (mb->un.varRdConfig.max_xri + 1) -
 473                                         lpfc_sli4_get_els_iocb_cnt(phba);
 474
 475         phba->lmt = mb->un.varRdConfig.lmt;
 476
 477         /* Get the default values for Model Name and Description */
 478         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 479
 480         phba->link_state = LPFC_LINK_DOWN;
 481
 482         /* Only process IOCBs on ELS ring till hba_state is READY */
 483         if (psli->ring[psli->extra_ring].sli.sli3.cmdringaddr)
 484                 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
 485         if (psli->ring[psli->fcp_ring].sli.sli3.cmdringaddr)
 486                 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
 487         if (psli->ring[psli->next_ring].sli.sli3.cmdringaddr)
 488                 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
 489
 490         /* Post receive buffers for desired rings */
 491         if (phba->sli_rev != 3)
 492                 lpfc_post_rcv_buf(phba);
 493
 494         /*
 495          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 496          */
 497         if (phba->intr_type == MSIX) {
 498                 rc = lpfc_config_msi(phba, pmb);
 499                 if (rc) {
 500                         mempool_free(pmb, phba->mbox_mem_pool);
 501                         return -EIO;
 502                 }
 503                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 504                 if (rc != MBX_SUCCESS) {
 505                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 506                                         "0352 Config MSI mailbox command "
 507                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 508                                         pmb->u.mb.mbxCommand,
 509                                         pmb->u.mb.mbxStatus);
 510                         mempool_free(pmb, phba->mbox_mem_pool);
 511                         return -EIO;
 512                 }
 513         }
 514
 515         spin_lock_irq(&phba->hbalock);
 516         /* Initialize ERATT handling flag */
 517         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 518
 519         /* Enable appropriate host interrupts */
 520         if (lpfc_readl(phba->HCregaddr, &status)) {
 521                 spin_unlock_irq(&phba->hbalock);
 522                 return -EIO;
 523         }
 524         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 525         if (psli->num_rings > 0)
 526                 status |= HC_R0INT_ENA;
 527         if (psli->num_rings > 1)
 528                 status |= HC_R1INT_ENA;
 529         if (psli->num_rings > 2)
 530                 status |= HC_R2INT_ENA;
 531         if (psli->num_rings > 3)
 532                 status |= HC_R3INT_ENA;
 533
 534         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 535             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 536                 status &= ~(HC_R0INT_ENA);
 537
 538         writel(status, phba->HCregaddr);
 539         readl(phba->HCregaddr); /* flush */
 540         spin_unlock_irq(&phba->hbalock);
 541
 542         /* Set up ring-0 (ELS) timer */
 543         timeout = phba->fc_ratov * 2;
 544         mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
 545         /* Set up heart beat (HB) timer */
 546         mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
 547         phba->hb_outstanding = 0;
 548         phba->last_completion_time = jiffies;
 549         /* Set up error attention (ERATT) polling timer */
 550         mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
 551
 552         if (phba->hba_flag & LINK_DISABLED) {
 553                 lpfc_printf_log(phba,
 554                         KERN_ERR, LOG_INIT,
 555                         "2598 Adapter Link is disabled.\n");
 556                 lpfc_down_link(phba, pmb);
 557                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 558                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 559                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 560                         lpfc_printf_log(phba,
 561                         KERN_ERR, LOG_INIT,
 562                         "2599 Adapter failed to issue DOWN_LINK"
 563                         " mbox command rc 0x%x\n", rc);
 564
 565                         mempool_free(pmb, phba->mbox_mem_pool);
 566                         return -EIO;
 567                 }
 568         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 569                 mempool_free(pmb, phba->mbox_mem_pool);
 570                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
 571                 if (rc)
 572                         return rc;
 573         }
 574         /* MBOX buffer will be freed in mbox compl */
 575         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 576         if (!pmb) {
 577                 phba->link_state = LPFC_HBA_ERROR;
 578                 return -ENOMEM;
 579         }
 580
 581         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 582         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 583         pmb->vport = phba->pport;
 584         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 585
 586         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 587                 lpfc_printf_log(phba,
 588                                 KERN_ERR,
 589                                 LOG_INIT,
 590                                 "0456 Adapter failed to issue "
 591                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 592                                 rc);
 593                 mempool_free(pmb, phba->mbox_mem_pool);
 594         }
 595
 596         /* Get Option rom version */
 597         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 598         if (!pmb) {
 599                 phba->link_state = LPFC_HBA_ERROR;
 600                 return -ENOMEM;
 601         }
 602
 603         lpfc_dump_wakeup_param(phba, pmb);
 604         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 605         pmb->vport = phba->pport;
 606         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 607
 608         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 609                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
 610                                 "to get Option ROM version status x%x\n", rc);
 611                 mempool_free(pmb, phba->mbox_mem_pool);
 612         }
 613
 614         return 0;
 615 }
 616
 617 /**
 618  * lpfc_hba_init_link - Initialize the FC link
 619  * @phba: pointer to lpfc hba data structure.
 620  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 621  *
 622  * This routine will issue the INIT_LINK mailbox command call.
 623  * It is available to other drivers through the lpfc_hba data
 624  * structure for use as a delayed link up mechanism with the
 625  * module parameter lpfc_suppress_link_up.
 626  *
 627  * Return code
 628  *              0 - success
 629  *              Any other value - error
 630  **/
 631 int
 632 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 633 {
 634         return lpfc_hba_init_link_fc_topology(phba, phba->cfg_topology, flag);
 635 }
 636
 637 /**
 638  * lpfc_hba_init_link_fc_topology - Initialize FC link with desired topology
 639  * @phba: pointer to lpfc hba data structure.
 640  * @fc_topology: desired fc topology.
 641  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 642  *
 643  * This routine will issue the INIT_LINK mailbox command call.
 644  * It is available to other drivers through the lpfc_hba data
 645  * structure for use as a delayed link up mechanism with the
 646  * module parameter lpfc_suppress_link_up.
 647  *
 648  * Return code
 649  *              0 - success
 650  *              Any other value - error
 651  **/
 652 int
 653 lpfc_hba_init_link_fc_topology(struct lpfc_hba *phba, uint32_t fc_topology,
 654                                uint32_t flag)
 655 {
 656         struct lpfc_vport *vport = phba->pport;
 657         LPFC_MBOXQ_t *pmb;
 658         MAILBOX_t *mb;
 659         int rc;
 660
 661         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 662         if (!pmb) {
 663                 phba->link_state = LPFC_HBA_ERROR;
 664                 return -ENOMEM;
 665         }
 666         mb = &pmb->u.mb;
 667         pmb->vport = vport;
 668
 669         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_MAX) ||
 670             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G) &&
 671              !(phba->lmt & LMT_1Gb)) ||
 672             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G) &&
 673              !(phba->lmt & LMT_2Gb)) ||
 674             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G) &&
 675              !(phba->lmt & LMT_4Gb)) ||
 676             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G) &&
 677              !(phba->lmt & LMT_8Gb)) ||
 678             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G) &&
 679              !(phba->lmt & LMT_10Gb)) ||
 680             ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G) &&
 681              !(phba->lmt & LMT_16Gb))) {
 682                 /* Reset link speed to auto */
 683                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
 684                         "1302 Invalid speed for this board:%d "
 685                         "Reset link speed to auto.\n",
 686                         phba->cfg_link_speed);
 687                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 688         }
 689         lpfc_init_link(phba, pmb, fc_topology, phba->cfg_link_speed);
 690         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 691         if (phba->sli_rev < LPFC_SLI_REV4)
 692                 lpfc_set_loopback_flag(phba);
 693         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 694         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 695                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 696                         "0498 Adapter failed to init, mbxCmd x%x "
 697                         "INIT_LINK, mbxStatus x%x\n",
 698                         mb->mbxCommand, mb->mbxStatus);
 699                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 700                         /* Clear all interrupt enable conditions */
 701                         writel(0, phba->HCregaddr);
 702                         readl(phba->HCregaddr); /* flush */
 703                         /* Clear all pending interrupts */
 704                         writel(0xffffffff, phba->HAregaddr);
 705                         readl(phba->HAregaddr); /* flush */
 706                 }
 707                 phba->link_state = LPFC_HBA_ERROR;
 708                 if (rc != MBX_BUSY || flag == MBX_POLL)
 709                         mempool_free(pmb, phba->mbox_mem_pool);
 710                 return -EIO;
 711         }
 712         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 713         if (flag == MBX_POLL)
 714                 mempool_free(pmb, phba->mbox_mem_pool);
 715
 716         return 0;
 717 }
 718
 719 /**
 720  * lpfc_hba_down_link - this routine downs the FC link
 721  * @phba: pointer to lpfc hba data structure.
 722  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 723  *
 724  * This routine will issue the DOWN_LINK mailbox command call.
 725  * It is available to other drivers through the lpfc_hba data
 726  * structure for use to stop the link.
 727  *
 728  * Return code
 729  *              0 - success
 730  *              Any other value - error
 731  **/
 732 int
 733 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 734 {
 735         LPFC_MBOXQ_t *pmb;
 736         int rc;
 737
 738         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 739         if (!pmb) {
 740                 phba->link_state = LPFC_HBA_ERROR;
 741                 return -ENOMEM;
 742         }
 743
 744         lpfc_printf_log(phba,
 745                 KERN_ERR, LOG_INIT,
 746                 "0491 Adapter Link is disabled.\n");
 747         lpfc_down_link(phba, pmb);
 748         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 749         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 750         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 751                 lpfc_printf_log(phba,
 752                 KERN_ERR, LOG_INIT,
 753                 "2522 Adapter failed to issue DOWN_LINK"
 754                 " mbox command rc 0x%x\n", rc);
 755
 756                 mempool_free(pmb, phba->mbox_mem_pool);
 757                 return -EIO;
 758         }
 759         if (flag == MBX_POLL)
 760                 mempool_free(pmb, phba->mbox_mem_pool);
 761
 762         return 0;
 763 }
 764
 765 /**
 766  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 767  * @phba: pointer to lpfc HBA data structure.
 768  *
 769  * This routine will do LPFC uninitialization before the HBA is reset when
 770  * bringing down the SLI Layer.
 771  *
 772  * Return codes
 773  *   0 - success.
 774  *   Any other value - error.
 775  **/
 776 int
 777 lpfc_hba_down_prep(struct lpfc_hba *phba)
 778 {
 779         struct lpfc_vport **vports;
 780         int i;
 781
 782         if (phba->sli_rev <= LPFC_SLI_REV3) {
 783                 /* Disable interrupts */
 784                 writel(0, phba->HCregaddr);
 785                 readl(phba->HCregaddr); /* flush */
 786         }
 787
 788         if (phba->pport->load_flag & FC_UNLOADING)
 789                 lpfc_cleanup_discovery_resources(phba->pport);
 790         else {
 791                 vports = lpfc_create_vport_work_array(phba);
 792                 if (vports != NULL)
 793                         for (i = 0; i <= phba->max_vports &&
 794                                 vports[i] != NULL; i++)
 795                                 lpfc_cleanup_discovery_resources(vports[i]);
 796                 lpfc_destroy_vport_work_array(phba, vports);
 797         }
 798         return 0;
 799 }
 800
 801 /**
 802  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 803  * @phba: pointer to lpfc HBA data structure.
 804  *
 805  * This routine will do uninitialization after the HBA is reset when bring
 806  * down the SLI Layer.
 807  *
 808  * Return codes
 809  *   0 - success.
 810  *   Any other value - error.
 811  **/
 812 static int
 813 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
 814 {
 815         struct lpfc_sli *psli = &phba->sli;
 816         struct lpfc_sli_ring *pring;
 817         struct lpfc_dmabuf *mp, *next_mp;
 818         LIST_HEAD(completions);
 819         int i;
 820
 821         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 822                 lpfc_sli_hbqbuf_free_all(phba);
 823         else {
 824                 /* Cleanup preposted buffers on the ELS ring */
 825                 pring = &psli->ring[LPFC_ELS_RING];
 826                 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
 827                         list_del(&mp->list);
 828                         pring->postbufq_cnt--;
 829                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 830                         kfree(mp);
 831                 }
 832         }
 833
 834         spin_lock_irq(&phba->hbalock);
 835         for (i = 0; i < psli->num_rings; i++) {
 836                 pring = &psli->ring[i];
 837
 838                 /* At this point in time the HBA is either reset or DOA. Either
 839                  * way, nothing should be on txcmplq as it will NEVER complete.
 840                  */
 841                 list_splice_init(&pring->txcmplq, &completions);
 842                 spin_unlock_irq(&phba->hbalock);
 843
 844                 /* Cancel all the IOCBs from the completions list */
 845                 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 846                                       IOERR_SLI_ABORTED);
 847
 848                 lpfc_sli_abort_iocb_ring(phba, pring);
 849                 spin_lock_irq(&phba->hbalock);
 850         }
 851         spin_unlock_irq(&phba->hbalock);
 852
 853         return 0;
 854 }
 855
 856 /**
 857  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
 858  * @phba: pointer to lpfc HBA data structure.
 859  *
 860  * This routine will do uninitialization after the HBA is reset when bring
 861  * down the SLI Layer.
 862  *
 863  * Return codes
 864  *   0 - success.
 865  *   Any other value - error.
 866  **/
 867 static int
 868 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 869 {
 870         struct lpfc_scsi_buf *psb, *psb_next;
 871         LIST_HEAD(aborts);
 872         int ret;
 873         unsigned long iflag = 0;
 874         struct lpfc_sglq *sglq_entry = NULL;
 875
 876         ret = lpfc_hba_down_post_s3(phba);
 877         if (ret)
 878                 return ret;
 879         /* At this point in time the HBA is either reset or DOA. Either
 880          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
 881          * on the lpfc_sgl_list so that it can either be freed if the
 882          * driver is unloading or reposted if the driver is restarting
 883          * the port.
 884          */
 885         spin_lock_irq(&phba->hbalock);  /* required for lpfc_sgl_list and */
 886                                         /* scsl_buf_list */
 887         /* abts_sgl_list_lock required because worker thread uses this
 888          * list.
 889          */
 890         spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
 891         list_for_each_entry(sglq_entry,
 892                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
 893                 sglq_entry->state = SGL_FREED;
 894
 895         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
 896                         &phba->sli4_hba.lpfc_sgl_list);
 897         spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
 898         /* abts_scsi_buf_list_lock required because worker thread uses this
 899          * list.
 900          */
 901         spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 902         list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
 903                         &aborts);
 904         spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 905         spin_unlock_irq(&phba->hbalock);
 906
 907         list_for_each_entry_safe(psb, psb_next, &aborts, list) {
 908                 psb->pCmd = NULL;
 909                 psb->status = IOSTAT_SUCCESS;
 910         }
 911         spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
 912         list_splice(&aborts, &phba->lpfc_scsi_buf_list);
 913         spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
 914         return 0;
 915 }
 916
 917 /**
 918  * lpfc_hba_down_post - Wrapper func for hba down post routine
 919  * @phba: pointer to lpfc HBA data structure.
 920  *
 921  * This routine wraps the actual SLI3 or SLI4 routine for performing
 922  * uninitialization after the HBA is reset when bring down the SLI Layer.
 923  *
 924  * Return codes
 925  *   0 - success.
 926  *   Any other value - error.
 927  **/
 928 int
 929 lpfc_hba_down_post(struct lpfc_hba *phba)
 930 {
 931         return (*phba->lpfc_hba_down_post)(phba);
 932 }
 933
 934 /**
 935  * lpfc_hb_timeout - The HBA-timer timeout handler
 936  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 937  *
 938  * This is the HBA-timer timeout handler registered to the lpfc driver. When
 939  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
 940  * work-port-events bitmap and the worker thread is notified. This timeout
 941  * event will be used by the worker thread to invoke the actual timeout
 942  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
 943  * be performed in the timeout handler and the HBA timeout event bit shall
 944  * be cleared by the worker thread after it has taken the event bitmap out.
 945  **/
 946 static void
 947 lpfc_hb_timeout(unsigned long ptr)
 948 {
 949         struct lpfc_hba *phba;
 950         uint32_t tmo_posted;
 951         unsigned long iflag;
 952
 953         phba = (struct lpfc_hba *)ptr;
 954
 955         /* Check for heart beat timeout conditions */
 956         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 957         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
 958         if (!tmo_posted)
 959                 phba->pport->work_port_events |= WORKER_HB_TMO;
 960         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 961
 962         /* Tell the worker thread there is work to do */
 963         if (!tmo_posted)
 964                 lpfc_worker_wake_up(phba);
 965         return;
 966 }
 967
 968 /**
 969  * lpfc_rrq_timeout - The RRQ-timer timeout handler
 970  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 971  *
 972  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
 973  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
 974  * work-port-events bitmap and the worker thread is notified. This timeout
 975  * event will be used by the worker thread to invoke the actual timeout
 976  * handler routine, lpfc_rrq_handler. Any periodical operations will
 977  * be performed in the timeout handler and the RRQ timeout event bit shall
 978  * be cleared by the worker thread after it has taken the event bitmap out.
 979  **/
 980 static void
 981 lpfc_rrq_timeout(unsigned long ptr)
 982 {
 983         struct lpfc_hba *phba;
 984         unsigned long iflag;
 985
 986         phba = (struct lpfc_hba *)ptr;
 987         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 988         phba->hba_flag |= HBA_RRQ_ACTIVE;
 989         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 990         lpfc_worker_wake_up(phba);
 991 }
 992
 993 /**
 994  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
 995  * @phba: pointer to lpfc hba data structure.
 996  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 997  *
 998  * This is the callback function to the lpfc heart-beat mailbox command.
 999  * If configured, the lpfc driver issues the heart-beat mailbox command to
1000  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
1001  * heart-beat mailbox command is issued, the driver shall set up heart-beat
1002  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
1003  * heart-beat outstanding state. Once the mailbox command comes back and
1004  * no error conditions detected, the heart-beat mailbox command timer is
1005  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1006  * state is cleared for the next heart-beat. If the timer expired with the
1007  * heart-beat outstanding state set, the driver will put the HBA offline.
1008  **/
1009 static void
1010 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1011 {
1012         unsigned long drvr_flag;
1013
1014         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1015         phba->hb_outstanding = 0;
1016         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1017
1018         /* Check and reset heart-beat timer is necessary */
1019         mempool_free(pmboxq, phba->mbox_mem_pool);
1020         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1021                 !(phba->link_state == LPFC_HBA_ERROR) &&
1022                 !(phba->pport->load_flag & FC_UNLOADING))
1023                 mod_timer(&phba->hb_tmofunc,
1024                         jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1025         return;
1026 }
1027
1028 /**
1029  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1030  * @phba: pointer to lpfc hba data structure.
1031  *
1032  * This is the actual HBA-timer timeout handler to be invoked by the worker
1033  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1034  * handler performs any periodic operations needed for the device. If such
1035  * periodic event has already been attended to either in the interrupt handler
1036  * or by processing slow-ring or fast-ring events within the HBA-timer
1037  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1038  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1039  * is configured and there is no heart-beat mailbox command outstanding, a
1040  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1041  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1042  * to offline.
1043  **/
1044 void
1045 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1046 {
1047         struct lpfc_vport **vports;
1048         LPFC_MBOXQ_t *pmboxq;
1049         struct lpfc_dmabuf *buf_ptr;
1050         int retval, i;
1051         struct lpfc_sli *psli = &phba->sli;
1052         LIST_HEAD(completions);
1053
1054         vports = lpfc_create_vport_work_array(phba);
1055         if (vports != NULL)
1056                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1057                         lpfc_rcv_seq_check_edtov(vports[i]);
1058         lpfc_destroy_vport_work_array(phba, vports);
1059
1060         if ((phba->link_state == LPFC_HBA_ERROR) ||
1061                 (phba->pport->load_flag & FC_UNLOADING) ||
1062                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1063                 return;
1064
1065         spin_lock_irq(&phba->pport->work_port_lock);
1066
1067         if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
1068                 jiffies)) {
1069                 spin_unlock_irq(&phba->pport->work_port_lock);
1070                 if (!phba->hb_outstanding)
1071                         mod_timer(&phba->hb_tmofunc,
1072                                 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1073                 else
1074                         mod_timer(&phba->hb_tmofunc,
1075                                 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1076                 return;
1077         }
1078         spin_unlock_irq(&phba->pport->work_port_lock);
1079
1080         if (phba->elsbuf_cnt &&
1081                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1082                 spin_lock_irq(&phba->hbalock);
1083                 list_splice_init(&phba->elsbuf, &completions);
1084                 phba->elsbuf_cnt = 0;
1085                 phba->elsbuf_prev_cnt = 0;
1086                 spin_unlock_irq(&phba->hbalock);
1087
1088                 while (!list_empty(&completions)) {
1089                         list_remove_head(&completions, buf_ptr,
1090                                 struct lpfc_dmabuf, list);
1091                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1092                         kfree(buf_ptr);
1093                 }
1094         }
1095         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1096
1097         /* If there is no heart beat outstanding, issue a heartbeat command */
1098         if (phba->cfg_enable_hba_heartbeat) {
1099                 if (!phba->hb_outstanding) {
1100                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1101                                 (list_empty(&psli->mboxq))) {
1102                                 pmboxq = mempool_alloc(phba->mbox_mem_pool,
1103                                                         GFP_KERNEL);
1104                                 if (!pmboxq) {
1105                                         mod_timer(&phba->hb_tmofunc,
1106                                                  jiffies +
1107                                                  HZ * LPFC_HB_MBOX_INTERVAL);
1108                                         return;
1109                                 }
1110
1111                                 lpfc_heart_beat(phba, pmboxq);
1112                                 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1113                                 pmboxq->vport = phba->pport;
1114                                 retval = lpfc_sli_issue_mbox(phba, pmboxq,
1115                                                 MBX_NOWAIT);
1116
1117                                 if (retval != MBX_BUSY &&
1118                                         retval != MBX_SUCCESS) {
1119                                         mempool_free(pmboxq,
1120                                                         phba->mbox_mem_pool);
1121                                         mod_timer(&phba->hb_tmofunc,
1122                                                 jiffies +
1123                                                 HZ * LPFC_HB_MBOX_INTERVAL);
1124                                         return;
1125                                 }
1126                                 phba->skipped_hb = 0;
1127                                 phba->hb_outstanding = 1;
1128                         } else if (time_before_eq(phba->last_completion_time,
1129                                         phba->skipped_hb)) {
1130                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1131                                         "2857 Last completion time not "
1132                                         " updated in %d ms\n",
1133                                         jiffies_to_msecs(jiffies
1134                                                  - phba->last_completion_time));
1135                         } else
1136                                 phba->skipped_hb = jiffies;
1137
1138                         mod_timer(&phba->hb_tmofunc,
1139                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1140                         return;
1141                 } else {
1142                         /*
1143                         * If heart beat timeout called with hb_outstanding set
1144                         * we need to give the hb mailbox cmd a chance to
1145                         * complete or TMO.
1146                         */
1147                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1148                                         "0459 Adapter heartbeat still out"
1149                                         "standing:last compl time was %d ms.\n",
1150                                         jiffies_to_msecs(jiffies
1151                                                  - phba->last_completion_time));
1152                         mod_timer(&phba->hb_tmofunc,
1153                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1154                 }
1155         }
1156 }
1157
1158 /**
1159  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1160  * @phba: pointer to lpfc hba data structure.
1161  *
1162  * This routine is called to bring the HBA offline when HBA hardware error
1163  * other than Port Error 6 has been detected.
1164  **/
1165 static void
1166 lpfc_offline_eratt(struct lpfc_hba *phba)
1167 {
1168         struct lpfc_sli   *psli = &phba->sli;
1169
1170         spin_lock_irq(&phba->hbalock);
1171         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1172         spin_unlock_irq(&phba->hbalock);
1173         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1174
1175         lpfc_offline(phba);
1176         lpfc_reset_barrier(phba);
1177         spin_lock_irq(&phba->hbalock);
1178         lpfc_sli_brdreset(phba);
1179         spin_unlock_irq(&phba->hbalock);
1180         lpfc_hba_down_post(phba);
1181         lpfc_sli_brdready(phba, HS_MBRDY);
1182         lpfc_unblock_mgmt_io(phba);
1183         phba->link_state = LPFC_HBA_ERROR;
1184         return;
1185 }
1186
1187 /**
1188  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1189  * @phba: pointer to lpfc hba data structure.
1190  *
1191  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1192  * other than Port Error 6 has been detected.
1193  **/
1194 static void
1195 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1196 {
1197         lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1198         lpfc_offline(phba);
1199         lpfc_sli4_brdreset(phba);
1200         lpfc_hba_down_post(phba);
1201         lpfc_sli4_post_status_check(phba);
1202         lpfc_unblock_mgmt_io(phba);
1203         phba->link_state = LPFC_HBA_ERROR;
1204 }
1205
1206 /**
1207  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1208  * @phba: pointer to lpfc hba data structure.
1209  *
1210  * This routine is invoked to handle the deferred HBA hardware error
1211  * conditions. This type of error is indicated by HBA by setting ER1
1212  * and another ER bit in the host status register. The driver will
1213  * wait until the ER1 bit clears before handling the error condition.
1214  **/
1215 static void
1216 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1217 {
1218         uint32_t old_host_status = phba->work_hs;
1219         struct lpfc_sli_ring  *pring;
1220         struct lpfc_sli *psli = &phba->sli;
1221
1222         /* If the pci channel is offline, ignore possible errors,
1223          * since we cannot communicate with the pci card anyway.
1224          */
1225         if (pci_channel_offline(phba->pcidev)) {
1226                 spin_lock_irq(&phba->hbalock);
1227                 phba->hba_flag &= ~DEFER_ERATT;
1228                 spin_unlock_irq(&phba->hbalock);
1229                 return;
1230         }
1231
1232         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1233                 "0479 Deferred Adapter Hardware Error "
1234                 "Data: x%x x%x x%x\n",
1235                 phba->work_hs,
1236                 phba->work_status[0], phba->work_status[1]);
1237
1238         spin_lock_irq(&phba->hbalock);
1239         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1240         spin_unlock_irq(&phba->hbalock);
1241
1242
1243         /*
1244          * Firmware stops when it triggred erratt. That could cause the I/Os
1245          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1246          * SCSI layer retry it after re-establishing link.
1247          */
1248         pring = &psli->ring[psli->fcp_ring];
1249         lpfc_sli_abort_iocb_ring(phba, pring);
1250
1251         /*
1252          * There was a firmware error. Take the hba offline and then
1253          * attempt to restart it.
1254          */
1255         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
1256         lpfc_offline(phba);
1257
1258         /* Wait for the ER1 bit to clear.*/
1259         while (phba->work_hs & HS_FFER1) {
1260                 msleep(100);
1261                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1262                         phba->work_hs = UNPLUG_ERR ;
1263                         break;
1264                 }
1265                 /* If driver is unloading let the worker thread continue */
1266                 if (phba->pport->load_flag & FC_UNLOADING) {
1267                         phba->work_hs = 0;
1268                         break;
1269                 }
1270         }
1271
1272         /*
1273          * This is to ptrotect against a race condition in which
1274          * first write to the host attention register clear the
1275          * host status register.
1276          */
1277         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1278                 phba->work_hs = old_host_status & ~HS_FFER1;
1279
1280         spin_lock_irq(&phba->hbalock);
1281         phba->hba_flag &= ~DEFER_ERATT;
1282         spin_unlock_irq(&phba->hbalock);
1283         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1284         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1285 }
1286
1287 static void
1288 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1289 {
1290         struct lpfc_board_event_header board_event;
1291         struct Scsi_Host *shost;
1292
1293         board_event.event_type = FC_REG_BOARD_EVENT;
1294         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1295         shost = lpfc_shost_from_vport(phba->pport);
1296         fc_host_post_vendor_event(shost, fc_get_event_number(),
1297                                   sizeof(board_event),
1298                                   (char *) &board_event,
1299                                   LPFC_NL_VENDOR_ID);
1300 }
1301
1302 /**
1303  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1304  * @phba: pointer to lpfc hba data structure.
1305  *
1306  * This routine is invoked to handle the following HBA hardware error
1307  * conditions:
1308  * 1 - HBA error attention interrupt
1309  * 2 - DMA ring index out of range
1310  * 3 - Mailbox command came back as unknown
1311  **/
1312 static void
1313 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1314 {
1315         struct lpfc_vport *vport = phba->pport;
1316         struct lpfc_sli   *psli = &phba->sli;
1317         struct lpfc_sli_ring  *pring;
1318         uint32_t event_data;
1319         unsigned long temperature;
1320         struct temp_event temp_event_data;
1321         struct Scsi_Host  *shost;
1322
1323         /* If the pci channel is offline, ignore possible errors,
1324          * since we cannot communicate with the pci card anyway.
1325          */
1326         if (pci_channel_offline(phba->pcidev)) {
1327                 spin_lock_irq(&phba->hbalock);
1328                 phba->hba_flag &= ~DEFER_ERATT;
1329                 spin_unlock_irq(&phba->hbalock);
1330                 return;
1331         }
1332
1333         /* If resets are disabled then leave the HBA alone and return */
1334         if (!phba->cfg_enable_hba_reset)
1335                 return;
1336
1337         /* Send an internal error event to mgmt application */
1338         lpfc_board_errevt_to_mgmt(phba);
1339
1340         if (phba->hba_flag & DEFER_ERATT)
1341                 lpfc_handle_deferred_eratt(phba);
1342
1343         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1344                 if (phba->work_hs & HS_FFER6)
1345                         /* Re-establishing Link */
1346                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1347                                         "1301 Re-establishing Link "
1348                                         "Data: x%x x%x x%x\n",
1349                                         phba->work_hs, phba->work_status[0],
1350                                         phba->work_status[1]);
1351                 if (phba->work_hs & HS_FFER8)
1352                         /* Device Zeroization */
1353                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1354                                         "2861 Host Authentication device "
1355                                         "zeroization Data:x%x x%x x%x\n",
1356                                         phba->work_hs, phba->work_status[0],
1357                                         phba->work_status[1]);
1358
1359                 spin_lock_irq(&phba->hbalock);
1360                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1361                 spin_unlock_irq(&phba->hbalock);
1362
1363                 /*
1364                 * Firmware stops when it triggled erratt with HS_FFER6.
1365                 * That could cause the I/Os dropped by the firmware.
1366                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1367                 * retry it after re-establishing link.
1368                 */
1369                 pring = &psli->ring[psli->fcp_ring];
1370                 lpfc_sli_abort_iocb_ring(phba, pring);
1371
1372                 /*
1373                  * There was a firmware error.  Take the hba offline and then
1374                  * attempt to restart it.
1375                  */
1376                 lpfc_offline_prep(phba, LPFC_MBX_NO_WAIT);
1377                 lpfc_offline(phba);
1378                 lpfc_sli_brdrestart(phba);
1379                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1380                         lpfc_unblock_mgmt_io(phba);
1381                         return;
1382                 }
1383                 lpfc_unblock_mgmt_io(phba);
1384         } else if (phba->work_hs & HS_CRIT_TEMP) {
1385                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1386                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1387                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1388                 temp_event_data.data = (uint32_t)temperature;
1389
1390                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1391                                 "0406 Adapter maximum temperature exceeded "
1392                                 "(%ld), taking this port offline "
1393                                 "Data: x%x x%x x%x\n",
1394                                 temperature, phba->work_hs,
1395                                 phba->work_status[0], phba->work_status[1]);
1396
1397                 shost = lpfc_shost_from_vport(phba->pport);
1398                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1399                                           sizeof(temp_event_data),
1400                                           (char *) &temp_event_data,
1401                                           SCSI_NL_VID_TYPE_PCI
1402                                           | PCI_VENDOR_ID_EMULEX);
1403
1404                 spin_lock_irq(&phba->hbalock);
1405                 phba->over_temp_state = HBA_OVER_TEMP;
1406                 spin_unlock_irq(&phba->hbalock);
1407                 lpfc_offline_eratt(phba);
1408
1409         } else {
1410                 /* The if clause above forces this code path when the status
1411                  * failure is a value other than FFER6. Do not call the offline
1412                  * twice. This is the adapter hardware error path.
1413                  */
1414                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1415                                 "0457 Adapter Hardware Error "
1416                                 "Data: x%x x%x x%x\n",
1417                                 phba->work_hs,
1418                                 phba->work_status[0], phba->work_status[1]);
1419
1420                 event_data = FC_REG_DUMP_EVENT;
1421                 shost = lpfc_shost_from_vport(vport);
1422                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1423                                 sizeof(event_data), (char *) &event_data,
1424                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1425
1426                 lpfc_offline_eratt(phba);
1427         }
1428         return;
1429 }
1430
1431 /**
1432  * lpfc_sli4_port_sta_fn_reset - The SLI4 function reset due to port status reg
1433  * @phba: pointer to lpfc hba data structure.
1434  * @mbx_action: flag for mailbox shutdown action.
1435  *
1436  * This routine is invoked to perform an SLI4 port PCI function reset in
1437  * response to port status register polling attention. It waits for port
1438  * status register (ERR, RDY, RN) bits before proceeding with function reset.
1439  * During this process, interrupt vectors are freed and later requested
1440  * for handling possible port resource change.
1441  **/
1442 static int
1443 lpfc_sli4_port_sta_fn_reset(struct lpfc_hba *phba, int mbx_action)
1444 {
1445         int rc;
1446         uint32_t intr_mode;
1447
1448         /*
1449          * On error status condition, driver need to wait for port
1450          * ready before performing reset.
1451          */
1452         rc = lpfc_sli4_pdev_status_reg_wait(phba);
1453         if (!rc) {
1454                 /* need reset: attempt for port recovery */
1455                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1456                                 "2887 Reset Needed: Attempting Port "
1457                                 "Recovery...\n");
1458                 lpfc_offline_prep(phba, mbx_action);
1459                 lpfc_offline(phba);
1460                 /* release interrupt for possible resource change */
1461                 lpfc_sli4_disable_intr(phba);
1462                 lpfc_sli_brdrestart(phba);
1463                 /* request and enable interrupt */
1464                 intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
1465                 if (intr_mode == LPFC_INTR_ERROR) {
1466                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1467                                         "3175 Failed to enable interrupt\n");
1468                         return -EIO;
1469                 } else {
1470                         phba->intr_mode = intr_mode;
1471                 }
1472                 rc = lpfc_online(phba);
1473                 if (rc == 0)
1474                         lpfc_unblock_mgmt_io(phba);
1475         }
1476         return rc;
1477 }
1478
1479 /**
1480  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1481  * @phba: pointer to lpfc hba data structure.
1482  *
1483  * This routine is invoked to handle the SLI4 HBA hardware error attention
1484  * conditions.
1485  **/
1486 static void
1487 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1488 {
1489         struct lpfc_vport *vport = phba->pport;
1490         uint32_t event_data;
1491         struct Scsi_Host *shost;
1492         uint32_t if_type;
1493         struct lpfc_register portstat_reg = {0};
1494         uint32_t reg_err1, reg_err2;
1495         uint32_t uerrlo_reg, uemasklo_reg;
1496         uint32_t pci_rd_rc1, pci_rd_rc2;
1497         int rc;
1498
1499         /* If the pci channel is offline, ignore possible errors, since
1500          * we cannot communicate with the pci card anyway.
1501          */
1502         if (pci_channel_offline(phba->pcidev))
1503                 return;
1504         /* If resets are disabled then leave the HBA alone and return */
1505         if (!phba->cfg_enable_hba_reset)
1506                 return;
1507
1508         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1509         switch (if_type) {
1510         case LPFC_SLI_INTF_IF_TYPE_0:
1511                 pci_rd_rc1 = lpfc_readl(
1512                                 phba->sli4_hba.u.if_type0.UERRLOregaddr,
1513                                 &uerrlo_reg);
1514                 pci_rd_rc2 = lpfc_readl(
1515                                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr,
1516                                 &uemasklo_reg);
1517                 /* consider PCI bus read error as pci_channel_offline */
1518                 if (pci_rd_rc1 == -EIO && pci_rd_rc2 == -EIO)
1519                         return;
1520                 lpfc_sli4_offline_eratt(phba);
1521                 break;
1522         case LPFC_SLI_INTF_IF_TYPE_2:
1523                 pci_rd_rc1 = lpfc_readl(
1524                                 phba->sli4_hba.u.if_type2.STATUSregaddr,
1525                                 &portstat_reg.word0);
1526                 /* consider PCI bus read error as pci_channel_offline */
1527                 if (pci_rd_rc1 == -EIO) {
1528                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1529                                 "3151 PCI bus read access failure: x%x\n",
1530                                 readl(phba->sli4_hba.u.if_type2.STATUSregaddr));
1531                         return;
1532                 }
1533                 reg_err1 = readl(phba->sli4_hba.u.if_type2.ERR1regaddr);
1534                 reg_err2 = readl(phba->sli4_hba.u.if_type2.ERR2regaddr);
1535                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1536                         /* TODO: Register for Overtemp async events. */
1537                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1538                                 "2889 Port Overtemperature event, "
1539                                 "taking port offline\n");
1540                         spin_lock_irq(&phba->hbalock);
1541                         phba->over_temp_state = HBA_OVER_TEMP;
1542                         spin_unlock_irq(&phba->hbalock);
1543                         lpfc_sli4_offline_eratt(phba);
1544                         break;
1545                 }
1546                 if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1547                     reg_err2 == SLIPORT_ERR2_REG_FW_RESTART)
1548                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1549                                         "3143 Port Down: Firmware Restarted\n");
1550                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1551                          reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1552                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1553                                         "3144 Port Down: Debug Dump\n");
1554                 else if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1555                          reg_err2 == SLIPORT_ERR2_REG_FUNC_PROVISON)
1556                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1557                                         "3145 Port Down: Provisioning\n");
1558
1559                 /* Check port status register for function reset */
1560                 rc = lpfc_sli4_port_sta_fn_reset(phba, LPFC_MBX_NO_WAIT);
1561                 if (rc == 0) {
1562                         /* don't report event on forced debug dump */
1563                         if (reg_err1 == SLIPORT_ERR1_REG_ERR_CODE_2 &&
1564                             reg_err2 == SLIPORT_ERR2_REG_FORCED_DUMP)
1565                                 return;
1566                         else
1567                                 break;
1568                 }
1569                 /* fall through for not able to recover */
1570                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1571                                 "3152 Unrecoverable error, bring the port "
1572                                 "offline\n");
1573                 lpfc_sli4_offline_eratt(phba);
1574                 break;
1575         case LPFC_SLI_INTF_IF_TYPE_1:
1576         default:
1577                 break;
1578         }
1579         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1580                         "3123 Report dump event to upper layer\n");
1581         /* Send an internal error event to mgmt application */
1582         lpfc_board_errevt_to_mgmt(phba);
1583
1584         event_data = FC_REG_DUMP_EVENT;
1585         shost = lpfc_shost_from_vport(vport);
1586         fc_host_post_vendor_event(shost, fc_get_event_number(),
1587                                   sizeof(event_data), (char *) &event_data,
1588                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1589 }
1590
1591 /**
1592  * lpfc_handle_eratt - Wrapper func for handling hba error attention
1593  * @phba: pointer to lpfc HBA data structure.
1594  *
1595  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
1596  * routine from the API jump table function pointer from the lpfc_hba struct.
1597  *
1598  * Return codes
1599  *   0 - success.
1600  *   Any other value - error.
1601  **/
1602 void
1603 lpfc_handle_eratt(struct lpfc_hba *phba)
1604 {
1605         (*phba->lpfc_handle_eratt)(phba);
1606 }
1607
1608 /**
1609  * lpfc_handle_latt - The HBA link event handler
1610  * @phba: pointer to lpfc hba data structure.
1611  *
1612  * This routine is invoked from the worker thread to handle a HBA host
1613  * attention link event.
1614  **/
1615 void
1616 lpfc_handle_latt(struct lpfc_hba *phba)
1617 {
1618         struct lpfc_vport *vport = phba->pport;
1619         struct lpfc_sli   *psli = &phba->sli;
1620         LPFC_MBOXQ_t *pmb;
1621         volatile uint32_t control;
1622         struct lpfc_dmabuf *mp;
1623         int rc = 0;
1624
1625         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1626         if (!pmb) {
1627                 rc = 1;
1628                 goto lpfc_handle_latt_err_exit;
1629         }
1630
1631         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1632         if (!mp) {
1633                 rc = 2;
1634                 goto lpfc_handle_latt_free_pmb;
1635         }
1636
1637         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
1638         if (!mp->virt) {
1639                 rc = 3;
1640                 goto lpfc_handle_latt_free_mp;
1641         }
1642
1643         /* Cleanup any outstanding ELS commands */
1644         lpfc_els_flush_all_cmd(phba);
1645
1646         psli->slistat.link_event++;
1647         lpfc_read_topology(phba, pmb, mp);
1648         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
1649         pmb->vport = vport;
1650         /* Block ELS IOCBs until we have processed this mbox command */
1651         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
1652         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
1653         if (rc == MBX_NOT_FINISHED) {
1654                 rc = 4;
1655                 goto lpfc_handle_latt_free_mbuf;
1656         }
1657
1658         /* Clear Link Attention in HA REG */
1659         spin_lock_irq(&phba->hbalock);
1660         writel(HA_LATT, phba->HAregaddr);
1661         readl(phba->HAregaddr); /* flush */
1662         spin_unlock_irq(&phba->hbalock);
1663
1664         return;
1665
1666 lpfc_handle_latt_free_mbuf:
1667         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1668         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1669 lpfc_handle_latt_free_mp:
1670         kfree(mp);
1671 lpfc_handle_latt_free_pmb:
1672         mempool_free(pmb, phba->mbox_mem_pool);
1673 lpfc_handle_latt_err_exit:
1674         /* Enable Link attention interrupts */
1675         spin_lock_irq(&phba->hbalock);
1676         psli->sli_flag |= LPFC_PROCESS_LA;
1677         control = readl(phba->HCregaddr);
1678         control |= HC_LAINT_ENA;
1679         writel(control, phba->HCregaddr);
1680         readl(phba->HCregaddr); /* flush */
1681
1682         /* Clear Link Attention in HA REG */
1683         writel(HA_LATT, phba->HAregaddr);
1684         readl(phba->HAregaddr); /* flush */
1685         spin_unlock_irq(&phba->hbalock);
1686         lpfc_linkdown(phba);
1687         phba->link_state = LPFC_HBA_ERROR;
1688
1689         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1690                      "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1691
1692         return;
1693 }
1694
1695 /**
1696  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
1697  * @phba: pointer to lpfc hba data structure.
1698  * @vpd: pointer to the vital product data.
1699  * @len: length of the vital product data in bytes.
1700  *
1701  * This routine parses the Vital Product Data (VPD). The VPD is treated as
1702  * an array of characters. In this routine, the ModelName, ProgramType, and
1703  * ModelDesc, etc. fields of the phba data structure will be populated.
1704  *
1705  * Return codes
1706  *   0 - pointer to the VPD passed in is NULL
1707  *   1 - success
1708  **/
1709 int
1710 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1711 {
1712         uint8_t lenlo, lenhi;
1713         int Length;
1714         int i, j;
1715         int finished = 0;
1716         int index = 0;
1717
1718         if (!vpd)
1719                 return 0;
1720
1721         /* Vital Product */
1722         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1723                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
1724                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1725                         (uint32_t) vpd[3]);
1726         while (!finished && (index < (len - 4))) {
1727                 switch (vpd[index]) {
1728                 case 0x82:
1729                 case 0x91:
1730                         index += 1;
1731                         lenlo = vpd[index];
1732                         index += 1;
1733                         lenhi = vpd[index];
1734                         index += 1;
1735                         i = ((((unsigned short)lenhi) << 8) + lenlo);
1736                         index += i;
1737                         break;
1738                 case 0x90:
1739                         index += 1;
1740                         lenlo = vpd[index];
1741                         index += 1;
1742                         lenhi = vpd[index];
1743                         index += 1;
1744                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
1745                         if (Length > len - index)
1746                                 Length = len - index;
1747                         while (Length > 0) {
1748                         /* Look for Serial Number */
1749                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1750                                 index += 2;
1751                                 i = vpd[index];
1752                                 index += 1;
1753                                 j = 0;
1754                                 Length -= (3+i);
1755                                 while(i--) {
1756                                         phba->SerialNumber[j++] = vpd[index++];
1757                                         if (j == 31)
1758                                                 break;
1759                                 }
1760                                 phba->SerialNumber[j] = 0;
1761                                 continue;
1762                         }
1763                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1764                                 phba->vpd_flag |= VPD_MODEL_DESC;
1765                                 index += 2;
1766                                 i = vpd[index];
1767                                 index += 1;
1768                                 j = 0;
1769                                 Length -= (3+i);
1770                                 while(i--) {
1771                                         phba->ModelDesc[j++] = vpd[index++];
1772                                         if (j == 255)
1773                                                 break;
1774                                 }
1775                                 phba->ModelDesc[j] = 0;
1776                                 continue;
1777                         }
1778                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1779                                 phba->vpd_flag |= VPD_MODEL_NAME;
1780                                 index += 2;
1781                                 i = vpd[index];
1782                                 index += 1;
1783                                 j = 0;
1784                                 Length -= (3+i);
1785                                 while(i--) {
1786                                         phba->ModelName[j++] = vpd[index++];
1787                                         if (j == 79)
1788                                                 break;
1789                                 }
1790                                 phba->ModelName[j] = 0;
1791                                 continue;
1792                         }
1793                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
1794                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
1795                                 index += 2;
1796                                 i = vpd[index];
1797                                 index += 1;
1798                                 j = 0;
1799                                 Length -= (3+i);
1800                                 while(i--) {
1801                                         phba->ProgramType[j++] = vpd[index++];
1802                                         if (j == 255)
1803                                                 break;
1804                                 }
1805                                 phba->ProgramType[j] = 0;
1806                                 continue;
1807                         }
1808                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
1809                                 phba->vpd_flag |= VPD_PORT;
1810                                 index += 2;
1811                                 i = vpd[index];
1812                                 index += 1;
1813                                 j = 0;
1814                                 Length -= (3+i);
1815                                 while(i--) {
1816                                         if ((phba->sli_rev == LPFC_SLI_REV4) &&
1817                                             (phba->sli4_hba.pport_name_sta ==
1818                                              LPFC_SLI4_PPNAME_GET)) {
1819                                                 j++;
1820                                                 index++;
1821                                         } else
1822                                                 phba->Port[j++] = vpd[index++];
1823                                         if (j == 19)
1824                                                 break;
1825                                 }
1826                                 if ((phba->sli_rev != LPFC_SLI_REV4) ||
1827                                     (phba->sli4_hba.pport_name_sta ==
1828                                      LPFC_SLI4_PPNAME_NON))
1829                                         phba->Port[j] = 0;
1830                                 continue;
1831                         }
1832                         else {
1833                                 index += 2;
1834                                 i = vpd[index];
1835                                 index += 1;
1836                                 index += i;
1837                                 Length -= (3 + i);
1838                         }
1839                 }
1840                 finished = 0;
1841                 break;
1842                 case 0x78:
1843                         finished = 1;
1844                         break;
1845                 default:
1846                         index ++;
1847                         break;
1848                 }
1849         }
1850
1851         return(1);
1852 }
1853
1854 /**
1855  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
1856  * @phba: pointer to lpfc hba data structure.
1857  * @mdp: pointer to the data structure to hold the derived model name.
1858  * @descp: pointer to the data structure to hold the derived description.
1859  *
1860  * This routine retrieves HBA's description based on its registered PCI device
1861  * ID. The @descp passed into this function points to an array of 256 chars. It
1862  * shall be returned with the model name, maximum speed, and the host bus type.
1863  * The @mdp passed into this function points to an array of 80 chars. When the
1864  * function returns, the @mdp will be filled with the model name.
1865  **/
1866 static void
1867 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
1868 {
1869         lpfc_vpd_t *vp;
1870         uint16_t dev_id = phba->pcidev->device;
1871         int max_speed;
1872         int GE = 0;
1873         int oneConnect = 0; /* default is not a oneConnect */
1874         struct {
1875                 char *name;
1876                 char *bus;
1877                 char *function;
1878         } m = {"<Unknown>", "", ""};
1879
1880         if (mdp && mdp[0] != '\0'
1881                 && descp && descp[0] != '\0')
1882                 return;
1883
1884         if (phba->lmt & LMT_16Gb)
1885                 max_speed = 16;
1886         else if (phba->lmt & LMT_10Gb)
1887                 max_speed = 10;
1888         else if (phba->lmt & LMT_8Gb)
1889                 max_speed = 8;
1890         else if (phba->lmt & LMT_4Gb)
1891                 max_speed = 4;
1892         else if (phba->lmt & LMT_2Gb)
1893                 max_speed = 2;
1894         else if (phba->lmt & LMT_1Gb)
1895                 max_speed = 1;
1896         else
1897                 max_speed = 0;
1898
1899         vp = &phba->vpd;
1900
1901         switch (dev_id) {
1902         case PCI_DEVICE_ID_FIREFLY:
1903                 m = (typeof(m)){"LP6000", "PCI", "Fibre Channel Adapter"};
1904                 break;
1905         case PCI_DEVICE_ID_SUPERFLY:
1906                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
1907                         m = (typeof(m)){"LP7000", "PCI",
1908                                         "Fibre Channel Adapter"};
1909                 else
1910                         m = (typeof(m)){"LP7000E", "PCI",
1911                                         "Fibre Channel Adapter"};
1912                 break;
1913         case PCI_DEVICE_ID_DRAGONFLY:
1914                 m = (typeof(m)){"LP8000", "PCI",
1915                                 "Fibre Channel Adapter"};
1916                 break;
1917         case PCI_DEVICE_ID_CENTAUR:
1918                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
1919                         m = (typeof(m)){"LP9002", "PCI",
1920                                         "Fibre Channel Adapter"};
1921                 else
1922                         m = (typeof(m)){"LP9000", "PCI",
1923                                         "Fibre Channel Adapter"};
1924                 break;
1925         case PCI_DEVICE_ID_RFLY:
1926                 m = (typeof(m)){"LP952", "PCI",
1927                                 "Fibre Channel Adapter"};
1928                 break;
1929         case PCI_DEVICE_ID_PEGASUS:
1930                 m = (typeof(m)){"LP9802", "PCI-X",
1931                                 "Fibre Channel Adapter"};
1932                 break;
1933         case PCI_DEVICE_ID_THOR:
1934                 m = (typeof(m)){"LP10000", "PCI-X",
1935                                 "Fibre Channel Adapter"};
1936                 break;
1937         case PCI_DEVICE_ID_VIPER:
1938                 m = (typeof(m)){"LPX1000",  "PCI-X",
1939                                 "Fibre Channel Adapter"};
1940                 break;
1941         case PCI_DEVICE_ID_PFLY:
1942                 m = (typeof(m)){"LP982", "PCI-X",
1943                                 "Fibre Channel Adapter"};
1944                 break;
1945         case PCI_DEVICE_ID_TFLY:
1946                 m = (typeof(m)){"LP1050", "PCI-X",
1947                                 "Fibre Channel Adapter"};
1948                 break;
1949         case PCI_DEVICE_ID_HELIOS:
1950                 m = (typeof(m)){"LP11000", "PCI-X2",
1951                                 "Fibre Channel Adapter"};
1952                 break;
1953         case PCI_DEVICE_ID_HELIOS_SCSP:
1954                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
1955                                 "Fibre Channel Adapter"};
1956                 break;
1957         case PCI_DEVICE_ID_HELIOS_DCSP:
1958                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
1959                                 "Fibre Channel Adapter"};
1960                 break;
1961         case PCI_DEVICE_ID_NEPTUNE:
1962                 m = (typeof(m)){"LPe1000", "PCIe", "Fibre Channel Adapter"};
1963                 break;
1964         case PCI_DEVICE_ID_NEPTUNE_SCSP:
1965                 m = (typeof(m)){"LPe1000-SP", "PCIe", "Fibre Channel Adapter"};
1966                 break;
1967         case PCI_DEVICE_ID_NEPTUNE_DCSP:
1968                 m = (typeof(m)){"LPe1002-SP", "PCIe", "Fibre Channel Adapter"};
1969                 break;
1970         case PCI_DEVICE_ID_BMID:
1971                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
1972                 break;
1973         case PCI_DEVICE_ID_BSMB:
1974                 m = (typeof(m)){"LP111", "PCI-X2", "Fibre Channel Adapter"};
1975                 break;
1976         case PCI_DEVICE_ID_ZEPHYR:
1977                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1978                 break;
1979         case PCI_DEVICE_ID_ZEPHYR_SCSP:
1980                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1981                 break;
1982         case PCI_DEVICE_ID_ZEPHYR_DCSP:
1983                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
1984                 GE = 1;
1985                 break;
1986         case PCI_DEVICE_ID_ZMID:
1987                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
1988                 break;
1989         case PCI_DEVICE_ID_ZSMB:
1990                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
1991                 break;
1992         case PCI_DEVICE_ID_LP101:
1993                 m = (typeof(m)){"LP101", "PCI-X", "Fibre Channel Adapter"};
1994                 break;
1995         case PCI_DEVICE_ID_LP10000S:
1996                 m = (typeof(m)){"LP10000-S", "PCI", "Fibre Channel Adapter"};
1997                 break;
1998         case PCI_DEVICE_ID_LP11000S:
1999                 m = (typeof(m)){"LP11000-S", "PCI-X2", "Fibre Channel Adapter"};
2000                 break;
2001         case PCI_DEVICE_ID_LPE11000S:
2002                 m = (typeof(m)){"LPe11000-S", "PCIe", "Fibre Channel Adapter"};
2003                 break;
2004         case PCI_DEVICE_ID_SAT:
2005                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
2006                 break;
2007         case PCI_DEVICE_ID_SAT_MID:
2008                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
2009                 break;
2010         case PCI_DEVICE_ID_SAT_SMB:
2011                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
2012                 break;
2013         case PCI_DEVICE_ID_SAT_DCSP:
2014                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
2015                 break;
2016         case PCI_DEVICE_ID_SAT_SCSP:
2017                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
2018                 break;
2019         case PCI_DEVICE_ID_SAT_S:
2020                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
2021                 break;
2022         case PCI_DEVICE_ID_HORNET:
2023                 m = (typeof(m)){"LP21000", "PCIe", "FCoE Adapter"};
2024                 GE = 1;
2025                 break;
2026         case PCI_DEVICE_ID_PROTEUS_VF:
2027                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2028                                 "Fibre Channel Adapter"};
2029                 break;
2030         case PCI_DEVICE_ID_PROTEUS_PF:
2031                 m = (typeof(m)){"LPev12000", "PCIe IOV",
2032                                 "Fibre Channel Adapter"};
2033                 break;
2034         case PCI_DEVICE_ID_PROTEUS_S:
2035                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
2036                                 "Fibre Channel Adapter"};
2037                 break;
2038         case PCI_DEVICE_ID_TIGERSHARK:
2039                 oneConnect = 1;
2040                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
2041                 break;
2042         case PCI_DEVICE_ID_TOMCAT:
2043                 oneConnect = 1;
2044                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
2045                 break;
2046         case PCI_DEVICE_ID_FALCON:
2047                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
2048                                 "EmulexSecure Fibre"};
2049                 break;
2050         case PCI_DEVICE_ID_BALIUS:
2051                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
2052                                 "Fibre Channel Adapter"};
2053                 break;
2054         case PCI_DEVICE_ID_LANCER_FC:
2055         case PCI_DEVICE_ID_LANCER_FC_VF:
2056                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
2057                 break;
2058         case PCI_DEVICE_ID_LANCER_FCOE:
2059         case PCI_DEVICE_ID_LANCER_FCOE_VF:
2060                 oneConnect = 1;
2061                 m = (typeof(m)){"OCe15100", "PCIe", "FCoE"};
2062                 break;
2063         case PCI_DEVICE_ID_SKYHAWK:
2064         case PCI_DEVICE_ID_SKYHAWK_VF:
2065                 oneConnect = 1;
2066                 m = (typeof(m)){"OCe14000", "PCIe", "FCoE"};
2067                 break;
2068         default:
2069                 m = (typeof(m)){"Unknown", "", ""};
2070                 break;
2071         }
2072
2073         if (mdp && mdp[0] == '\0')
2074                 snprintf(mdp, 79,"%s", m.name);
2075         /*
2076          * oneConnect hba requires special processing, they are all initiators
2077          * and we put the port number on the end
2078          */
2079         if (descp && descp[0] == '\0') {
2080                 if (oneConnect)
2081                         snprintf(descp, 255,
2082                                 "Emulex OneConnect %s, %s Initiator %s",
2083                                 m.name, m.function,
2084                                 phba->Port);
2085                 else if (max_speed == 0)
2086                         snprintf(descp, 255,
2087                                 "Emulex %s %s %s ",
2088                                 m.name, m.bus, m.function);
2089                 else
2090                         snprintf(descp, 255,
2091                                 "Emulex %s %d%s %s %s",
2092                                 m.name, max_speed, (GE) ? "GE" : "Gb",
2093                                 m.bus, m.function);
2094         }
2095 }
2096
2097 /**
2098  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
2099  * @phba: pointer to lpfc hba data structure.
2100  * @pring: pointer to a IOCB ring.
2101  * @cnt: the number of IOCBs to be posted to the IOCB ring.
2102  *
2103  * This routine posts a given number of IOCBs with the associated DMA buffer
2104  * descriptors specified by the cnt argument to the given IOCB ring.
2105  *
2106  * Return codes
2107  *   The number of IOCBs NOT able to be posted to the IOCB ring.
2108  **/
2109 int
2110 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2111 {
2112         IOCB_t *icmd;
2113         struct lpfc_iocbq *iocb;
2114         struct lpfc_dmabuf *mp1, *mp2;
2115
2116         cnt += pring->missbufcnt;
2117
2118         /* While there are buffers to post */
2119         while (cnt > 0) {
2120                 /* Allocate buffer for  command iocb */
2121                 iocb = lpfc_sli_get_iocbq(phba);
2122                 if (iocb == NULL) {
2123                         pring->missbufcnt = cnt;
2124                         return cnt;
2125                 }
2126                 icmd = &iocb->iocb;
2127
2128                 /* 2 buffers can be posted per command */
2129                 /* Allocate buffer to post */
2130                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2131                 if (mp1)
2132                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2133                 if (!mp1 || !mp1->virt) {
2134                         kfree(mp1);
2135                         lpfc_sli_release_iocbq(phba, iocb);
2136                         pring->missbufcnt = cnt;
2137                         return cnt;
2138                 }
2139
2140                 INIT_LIST_HEAD(&mp1->list);
2141                 /* Allocate buffer to post */
2142                 if (cnt > 1) {
2143                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2144                         if (mp2)
2145                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2146                                                             &mp2->phys);
2147                         if (!mp2 || !mp2->virt) {
2148                                 kfree(mp2);
2149                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2150                                 kfree(mp1);
2151                                 lpfc_sli_release_iocbq(phba, iocb);
2152                                 pring->missbufcnt = cnt;
2153                                 return cnt;
2154                         }
2155
2156                         INIT_LIST_HEAD(&mp2->list);
2157                 } else {
2158                         mp2 = NULL;
2159                 }
2160
2161                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2162                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2163                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2164                 icmd->ulpBdeCount = 1;
2165                 cnt--;
2166                 if (mp2) {
2167                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2168                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2169                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2170                         cnt--;
2171                         icmd->ulpBdeCount = 2;
2172                 }
2173
2174                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2175                 icmd->ulpLe = 1;
2176
2177                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2178                     IOCB_ERROR) {
2179                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2180                         kfree(mp1);
2181                         cnt++;
2182                         if (mp2) {
2183                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2184                                 kfree(mp2);
2185                                 cnt++;
2186                         }
2187                         lpfc_sli_release_iocbq(phba, iocb);
2188                         pring->missbufcnt = cnt;
2189                         return cnt;
2190                 }
2191                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2192                 if (mp2)
2193                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2194         }
2195         pring->missbufcnt = 0;
2196         return 0;
2197 }
2198
2199 /**
2200  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2201  * @phba: pointer to lpfc hba data structure.
2202  *
2203  * This routine posts initial receive IOCB buffers to the ELS ring. The
2204  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2205  * set to 64 IOCBs.
2206  *
2207  * Return codes
2208  *   0 - success (currently always success)
2209  **/
2210 static int
2211 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2212 {
2213         struct lpfc_sli *psli = &phba->sli;
2214
2215         /* Ring 0, ELS / CT buffers */
2216         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2217         /* Ring 2 - FCP no buffers needed */
2218
2219         return 0;
2220 }
2221
2222 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2223
2224 /**
2225  * lpfc_sha_init - Set up initial array of hash table entries
2226  * @HashResultPointer: pointer to an array as hash table.
2227  *
2228  * This routine sets up the initial values to the array of hash table entries
2229  * for the LC HBAs.
2230  **/
2231 static void
2232 lpfc_sha_init(uint32_t * HashResultPointer)
2233 {
2234         HashResultPointer[0] = 0x67452301;
2235         HashResultPointer[1] = 0xEFCDAB89;
2236         HashResultPointer[2] = 0x98BADCFE;
2237         HashResultPointer[3] = 0x10325476;
2238         HashResultPointer[4] = 0xC3D2E1F0;
2239 }
2240
2241 /**
2242  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2243  * @HashResultPointer: pointer to an initial/result hash table.
2244  * @HashWorkingPointer: pointer to an working hash table.
2245  *
2246  * This routine iterates an initial hash table pointed by @HashResultPointer
2247  * with the values from the working hash table pointeed by @HashWorkingPointer.
2248  * The results are putting back to the initial hash table, returned through
2249  * the @HashResultPointer as the result hash table.
2250  **/
2251 static void
2252 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2253 {
2254         int t;
2255         uint32_t TEMP;
2256         uint32_t A, B, C, D, E;
2257         t = 16;
2258         do {
2259                 HashWorkingPointer[t] =
2260                     S(1,
2261                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2262                                                                      8] ^
2263                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2264         } while (++t <= 79);
2265         t = 0;
2266         A = HashResultPointer[0];
2267         B = HashResultPointer[1];
2268         C = HashResultPointer[2];
2269         D = HashResultPointer[3];
2270         E = HashResultPointer[4];
2271
2272         do {
2273                 if (t < 20) {
2274                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2275                 } else if (t < 40) {
2276                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2277                 } else if (t < 60) {
2278                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2279                 } else {
2280                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2281                 }
2282                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2283                 E = D;
2284                 D = C;
2285                 C = S(30, B);
2286                 B = A;
2287                 A = TEMP;
2288         } while (++t <= 79);
2289
2290         HashResultPointer[0] += A;
2291         HashResultPointer[1] += B;
2292         HashResultPointer[2] += C;
2293         HashResultPointer[3] += D;
2294         HashResultPointer[4] += E;
2295
2296 }
2297
2298 /**
2299  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2300  * @RandomChallenge: pointer to the entry of host challenge random number array.
2301  * @HashWorking: pointer to the entry of the working hash array.
2302  *
2303  * This routine calculates the working hash array referred by @HashWorking
2304  * from the challenge random numbers associated with the host, referred by
2305  * @RandomChallenge. The result is put into the entry of the working hash
2306  * array and returned by reference through @HashWorking.
2307  **/
2308 static void
2309 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2310 {
2311         *HashWorking = (*RandomChallenge ^ *HashWorking);
2312 }
2313
2314 /**
2315  * lpfc_hba_init - Perform special handling for LC HBA initialization
2316  * @phba: pointer to lpfc hba data structure.
2317  * @hbainit: pointer to an array of unsigned 32-bit integers.
2318  *
2319  * This routine performs the special handling for LC HBA initialization.
2320  **/
2321 void
2322 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2323 {
2324         int t;
2325         uint32_t *HashWorking;
2326         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2327
2328         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2329         if (!HashWorking)
2330                 return;
2331
2332         HashWorking[0] = HashWorking[78] = *pwwnn++;
2333         HashWorking[1] = HashWorking[79] = *pwwnn;
2334
2335         for (t = 0; t < 7; t++)
2336                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2337
2338         lpfc_sha_init(hbainit);
2339         lpfc_sha_iterate(hbainit, HashWorking);
2340         kfree(HashWorking);
2341 }
2342
2343 /**
2344  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2345  * @vport: pointer to a virtual N_Port data structure.
2346  *
2347  * This routine performs the necessary cleanups before deleting the @vport.
2348  * It invokes the discovery state machine to perform necessary state
2349  * transitions and to release the ndlps associated with the @vport. Note,
2350  * the physical port is treated as @vport 0.
2351  **/
2352 void
2353 lpfc_cleanup(struct lpfc_vport *vport)
2354 {
2355         struct lpfc_hba   *phba = vport->phba;
2356         struct lpfc_nodelist *ndlp, *next_ndlp;
2357         int i = 0;
2358
2359         if (phba->link_state > LPFC_LINK_DOWN)
2360                 lpfc_port_link_failure(vport);
2361
2362         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2363                 if (!NLP_CHK_NODE_ACT(ndlp)) {
2364                         ndlp = lpfc_enable_node(vport, ndlp,
2365                                                 NLP_STE_UNUSED_NODE);
2366                         if (!ndlp)
2367                                 continue;
2368                         spin_lock_irq(&phba->ndlp_lock);
2369                         NLP_SET_FREE_REQ(ndlp);
2370                         spin_unlock_irq(&phba->ndlp_lock);
2371                         /* Trigger the release of the ndlp memory */
2372                         lpfc_nlp_put(ndlp);
2373                         continue;
2374                 }
2375                 spin_lock_irq(&phba->ndlp_lock);
2376                 if (NLP_CHK_FREE_REQ(ndlp)) {
2377                         /* The ndlp should not be in memory free mode already */
2378                         spin_unlock_irq(&phba->ndlp_lock);
2379                         continue;
2380                 } else
2381                         /* Indicate request for freeing ndlp memory */
2382                         NLP_SET_FREE_REQ(ndlp);
2383                 spin_unlock_irq(&phba->ndlp_lock);
2384
2385                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2386                     ndlp->nlp_DID == Fabric_DID) {
2387                         /* Just free up ndlp with Fabric_DID for vports */
2388                         lpfc_nlp_put(ndlp);
2389                         continue;
2390                 }
2391
2392                 /* take care of nodes in unused state before the state
2393                  * machine taking action.
2394                  */
2395                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE) {
2396                         lpfc_nlp_put(ndlp);
2397                         continue;
2398                 }
2399
2400                 if (ndlp->nlp_type & NLP_FABRIC)
2401                         lpfc_disc_state_machine(vport, ndlp, NULL,
2402                                         NLP_EVT_DEVICE_RECOVERY);
2403
2404                 lpfc_disc_state_machine(vport, ndlp, NULL,
2405                                              NLP_EVT_DEVICE_RM);
2406         }
2407
2408         /* At this point, ALL ndlp's should be gone
2409          * because of the previous NLP_EVT_DEVICE_RM.
2410          * Lets wait for this to happen, if needed.
2411          */
2412         while (!list_empty(&vport->fc_nodes)) {
2413                 if (i++ > 3000) {
2414                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2415                                 "0233 Nodelist not empty\n");
2416                         list_for_each_entry_safe(ndlp, next_ndlp,
2417                                                 &vport->fc_nodes, nlp_listp) {
2418                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2419                                                 LOG_NODE,
2420                                                 "0282 did:x%x ndlp:x%p "
2421                                                 "usgmap:x%x refcnt:%d\n",
2422                                                 ndlp->nlp_DID, (void *)ndlp,
2423                                                 ndlp->nlp_usg_map,
2424                                                 atomic_read(
2425                                                         &ndlp->kref.refcount));
2426                         }
2427                         break;
2428                 }
2429
2430                 /* Wait for any activity on ndlps to settle */
2431                 msleep(10);
2432         }
2433         lpfc_cleanup_vports_rrqs(vport, NULL);
2434 }
2435
2436 /**
2437  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2438  * @vport: pointer to a virtual N_Port data structure.
2439  *
2440  * This routine stops all the timers associated with a @vport. This function
2441  * is invoked before disabling or deleting a @vport. Note that the physical
2442  * port is treated as @vport 0.
2443  **/
2444 void
2445 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2446 {
2447         del_timer_sync(&vport->els_tmofunc);
2448         del_timer_sync(&vport->fc_fdmitmo);
2449         del_timer_sync(&vport->delayed_disc_tmo);
2450         lpfc_can_disctmo(vport);
2451         return;
2452 }
2453
2454 /**
2455  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2456  * @phba: pointer to lpfc hba data structure.
2457  *
2458  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2459  * caller of this routine should already hold the host lock.
2460  **/
2461 void
2462 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2463 {
2464         /* Clear pending FCF rediscovery wait flag */
2465         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2466
2467         /* Now, try to stop the timer */
2468         del_timer(&phba->fcf.redisc_wait);
2469 }
2470
2471 /**
2472  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2473  * @phba: pointer to lpfc hba data structure.
2474  *
2475  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2476  * checks whether the FCF rediscovery wait timer is pending with the host
2477  * lock held before proceeding with disabling the timer and clearing the
2478  * wait timer pendig flag.
2479  **/
2480 void
2481 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2482 {
2483         spin_lock_irq(&phba->hbalock);
2484         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2485                 /* FCF rediscovery timer already fired or stopped */
2486                 spin_unlock_irq(&phba->hbalock);
2487                 return;
2488         }
2489         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2490         /* Clear failover in progress flags */
2491         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2492         spin_unlock_irq(&phba->hbalock);
2493 }
2494
2495 /**
2496  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2497  * @phba: pointer to lpfc hba data structure.
2498  *
2499  * This routine stops all the timers associated with a HBA. This function is
2500  * invoked before either putting a HBA offline or unloading the driver.
2501  **/
2502 void
2503 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2504 {
2505         lpfc_stop_vport_timers(phba->pport);
2506         del_timer_sync(&phba->sli.mbox_tmo);
2507         del_timer_sync(&phba->fabric_block_timer);
2508         del_timer_sync(&phba->eratt_poll);
2509         del_timer_sync(&phba->hb_tmofunc);
2510         if (phba->sli_rev == LPFC_SLI_REV4) {
2511                 del_timer_sync(&phba->rrq_tmr);
2512                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2513         }
2514         phba->hb_outstanding = 0;
2515
2516         switch (phba->pci_dev_grp) {
2517         case LPFC_PCI_DEV_LP:
2518                 /* Stop any LightPulse device specific driver timers */
2519                 del_timer_sync(&phba->fcp_poll_timer);
2520                 break;
2521         case LPFC_PCI_DEV_OC:
2522                 /* Stop any OneConnect device sepcific driver timers */
2523                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2524                 break;
2525         default:
2526                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2527                                 "0297 Invalid device group (x%x)\n",
2528                                 phba->pci_dev_grp);
2529                 break;
2530         }
2531         return;
2532 }
2533
2534 /**
2535  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2536  * @phba: pointer to lpfc hba data structure.
2537  *
2538  * This routine marks a HBA's management interface as blocked. Once the HBA's
2539  * management interface is marked as blocked, all the user space access to
2540  * the HBA, whether they are from sysfs interface or libdfc interface will
2541  * all be blocked. The HBA is set to block the management interface when the
2542  * driver prepares the HBA interface for online or offline.
2543  **/
2544 static void
2545 lpfc_block_mgmt_io(struct lpfc_hba *phba, int mbx_action)
2546 {
2547         unsigned long iflag;
2548         uint8_t actcmd = MBX_HEARTBEAT;
2549         unsigned long timeout;
2550
2551         spin_lock_irqsave(&phba->hbalock, iflag);
2552         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2553         spin_unlock_irqrestore(&phba->hbalock, iflag);
2554         if (mbx_action == LPFC_MBX_NO_WAIT)
2555                 return;
2556         timeout = msecs_to_jiffies(LPFC_MBOX_TMO * 1000) + jiffies;
2557         spin_lock_irqsave(&phba->hbalock, iflag);
2558         if (phba->sli.mbox_active) {
2559                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2560                 /* Determine how long we might wait for the active mailbox
2561                  * command to be gracefully completed by firmware.
2562                  */
2563                 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
2564                                 phba->sli.mbox_active) * 1000) + jiffies;
2565         }
2566         spin_unlock_irqrestore(&phba->hbalock, iflag);
2567
2568         /* Wait for the outstnading mailbox command to complete */
2569         while (phba->sli.mbox_active) {
2570                 /* Check active mailbox complete status every 2ms */
2571                 msleep(2);
2572                 if (time_after(jiffies, timeout)) {
2573                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2574                                 "2813 Mgmt IO is Blocked %x "
2575                                 "- mbox cmd %x still active\n",
2576                                 phba->sli.sli_flag, actcmd);
2577                         break;
2578                 }
2579         }
2580 }
2581
2582 /**
2583  * lpfc_sli4_node_prep - Assign RPIs for active nodes.
2584  * @phba: pointer to lpfc hba data structure.
2585  *
2586  * Allocate RPIs for all active remote nodes. This is needed whenever
2587  * an SLI4 adapter is reset and the driver is not unloading. Its purpose
2588  * is to fixup the temporary rpi assignments.
2589  **/
2590 void
2591 lpfc_sli4_node_prep(struct lpfc_hba *phba)
2592 {
2593         struct lpfc_nodelist  *ndlp, *next_ndlp;
2594         struct lpfc_vport **vports;
2595         int i;
2596
2597         if (phba->sli_rev != LPFC_SLI_REV4)
2598                 return;
2599
2600         vports = lpfc_create_vport_work_array(phba);
2601         if (vports != NULL) {
2602                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2603                         if (vports[i]->load_flag & FC_UNLOADING)
2604                                 continue;
2605
2606                         list_for_each_entry_safe(ndlp, next_ndlp,
2607                                                  &vports[i]->fc_nodes,
2608                                                  nlp_listp) {
2609                                 if (NLP_CHK_NODE_ACT(ndlp))
2610                                         ndlp->nlp_rpi =
2611                                                 lpfc_sli4_alloc_rpi(phba);
2612                         }
2613                 }
2614         }
2615         lpfc_destroy_vport_work_array(phba, vports);
2616 }
2617
2618 /**
2619  * lpfc_online - Initialize and bring a HBA online
2620  * @phba: pointer to lpfc hba data structure.
2621  *
2622  * This routine initializes the HBA and brings a HBA online. During this
2623  * process, the management interface is blocked to prevent user space access
2624  * to the HBA interfering with the driver initialization.
2625  *
2626  * Return codes
2627  *   0 - successful
2628  *   1 - failed
2629  **/
2630 int
2631 lpfc_online(struct lpfc_hba *phba)
2632 {
2633         struct lpfc_vport *vport;
2634         struct lpfc_vport **vports;
2635         int i;
2636
2637         if (!phba)
2638                 return 0;
2639         vport = phba->pport;
2640
2641         if (!(vport->fc_flag & FC_OFFLINE_MODE))
2642                 return 0;
2643
2644         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2645                         "0458 Bring Adapter online\n");
2646
2647         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
2648
2649         if (!lpfc_sli_queue_setup(phba)) {
2650                 lpfc_unblock_mgmt_io(phba);
2651                 return 1;
2652         }
2653
2654         if (phba->sli_rev == LPFC_SLI_REV4) {
2655                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
2656                         lpfc_unblock_mgmt_io(phba);
2657                         return 1;
2658                 }
2659         } else {
2660                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
2661                         lpfc_unblock_mgmt_io(phba);
2662                         return 1;
2663                 }
2664         }
2665
2666         vports = lpfc_create_vport_work_array(phba);
2667         if (vports != NULL)
2668                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2669                         struct Scsi_Host *shost;
2670                         shost = lpfc_shost_from_vport(vports[i]);
2671                         spin_lock_irq(shost->host_lock);
2672                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
2673                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2674                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2675                         if (phba->sli_rev == LPFC_SLI_REV4)
2676                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
2677                         spin_unlock_irq(shost->host_lock);
2678                 }
2679                 lpfc_destroy_vport_work_array(phba, vports);
2680
2681         lpfc_unblock_mgmt_io(phba);
2682         return 0;
2683 }
2684
2685 /**
2686  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
2687  * @phba: pointer to lpfc hba data structure.
2688  *
2689  * This routine marks a HBA's management interface as not blocked. Once the
2690  * HBA's management interface is marked as not blocked, all the user space
2691  * access to the HBA, whether they are from sysfs interface or libdfc
2692  * interface will be allowed. The HBA is set to block the management interface
2693  * when the driver prepares the HBA interface for online or offline and then
2694  * set to unblock the management interface afterwards.
2695  **/
2696 void
2697 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
2698 {
2699         unsigned long iflag;
2700
2701         spin_lock_irqsave(&phba->hbalock, iflag);
2702         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
2703         spin_unlock_irqrestore(&phba->hbalock, iflag);
2704 }
2705
2706 /**
2707  * lpfc_offline_prep - Prepare a HBA to be brought offline
2708  * @phba: pointer to lpfc hba data structure.
2709  *
2710  * This routine is invoked to prepare a HBA to be brought offline. It performs
2711  * unregistration login to all the nodes on all vports and flushes the mailbox
2712  * queue to make it ready to be brought offline.
2713  **/
2714 void
2715 lpfc_offline_prep(struct lpfc_hba *phba, int mbx_action)
2716 {
2717         struct lpfc_vport *vport = phba->pport;
2718         struct lpfc_nodelist  *ndlp, *next_ndlp;
2719         struct lpfc_vport **vports;
2720         struct Scsi_Host *shost;
2721         int i;
2722
2723         if (vport->fc_flag & FC_OFFLINE_MODE)
2724                 return;
2725
2726         lpfc_block_mgmt_io(phba, mbx_action);
2727
2728         lpfc_linkdown(phba);
2729
2730         /* Issue an unreg_login to all nodes on all vports */
2731         vports = lpfc_create_vport_work_array(phba);
2732         if (vports != NULL) {
2733                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2734                         if (vports[i]->load_flag & FC_UNLOADING)
2735                                 continue;
2736                         shost = lpfc_shost_from_vport(vports[i]);
2737                         spin_lock_irq(shost->host_lock);
2738                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
2739                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2740                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
2741                         spin_unlock_irq(shost->host_lock);
2742
2743                         shost = lpfc_shost_from_vport(vports[i]);
2744                         list_for_each_entry_safe(ndlp, next_ndlp,
2745                                                  &vports[i]->fc_nodes,
2746                                                  nlp_listp) {
2747                                 if (!NLP_CHK_NODE_ACT(ndlp))
2748                                         continue;
2749                                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2750                                         continue;
2751                                 if (ndlp->nlp_type & NLP_FABRIC) {
2752                                         lpfc_disc_state_machine(vports[i], ndlp,
2753                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
2754                                         lpfc_disc_state_machine(vports[i], ndlp,
2755                                                 NULL, NLP_EVT_DEVICE_RM);
2756                                 }
2757                                 spin_lock_irq(shost->host_lock);
2758                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2759                                 spin_unlock_irq(shost->host_lock);
2760                                 /*
2761                                  * Whenever an SLI4 port goes offline, free the
2762                                  * RPI. Get a new RPI when the adapter port
2763                                  * comes back online.
2764                                  */
2765                                 if (phba->sli_rev == LPFC_SLI_REV4)
2766                                         lpfc_sli4_free_rpi(phba, ndlp->nlp_rpi);
2767                                 lpfc_unreg_rpi(vports[i], ndlp);
2768                         }
2769                 }
2770         }
2771         lpfc_destroy_vport_work_array(phba, vports);
2772
2773         lpfc_sli_mbox_sys_shutdown(phba, mbx_action);
2774 }
2775
2776 /**
2777  * lpfc_offline - Bring a HBA offline
2778  * @phba: pointer to lpfc hba data structure.
2779  *
2780  * This routine actually brings a HBA offline. It stops all the timers
2781  * associated with the HBA, brings down the SLI layer, and eventually
2782  * marks the HBA as in offline state for the upper layer protocol.
2783  **/
2784 void
2785 lpfc_offline(struct lpfc_hba *phba)
2786 {
2787         struct Scsi_Host  *shost;
2788         struct lpfc_vport **vports;
2789         int i;
2790
2791         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
2792                 return;
2793
2794         /* stop port and all timers associated with this hba */
2795         lpfc_stop_port(phba);
2796         vports = lpfc_create_vport_work_array(phba);
2797         if (vports != NULL)
2798                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
2799                         lpfc_stop_vport_timers(vports[i]);
2800         lpfc_destroy_vport_work_array(phba, vports);
2801         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2802                         "0460 Bring Adapter offline\n");
2803         /* Bring down the SLI Layer and cleanup.  The HBA is offline
2804            now.  */
2805         lpfc_sli_hba_down(phba);
2806         spin_lock_irq(&phba->hbalock);
2807         phba->work_ha = 0;
2808         spin_unlock_irq(&phba->hbalock);
2809         vports = lpfc_create_vport_work_array(phba);
2810         if (vports != NULL)
2811                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2812                         shost = lpfc_shost_from_vport(vports[i]);
2813                         spin_lock_irq(shost->host_lock);
2814                         vports[i]->work_port_events = 0;
2815                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
2816                         spin_unlock_irq(shost->host_lock);
2817                 }
2818         lpfc_destroy_vport_work_array(phba, vports);
2819 }
2820
2821 /**
2822  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
2823  * @phba: pointer to lpfc hba data structure.
2824  *
2825  * This routine is to free all the SCSI buffers and IOCBs from the driver
2826  * list back to kernel. It is called from lpfc_pci_remove_one to free
2827  * the internal resources before the device is removed from the system.
2828  **/
2829 static void
2830 lpfc_scsi_free(struct lpfc_hba *phba)
2831 {
2832         struct lpfc_scsi_buf *sb, *sb_next;
2833         struct lpfc_iocbq *io, *io_next;
2834
2835         spin_lock_irq(&phba->hbalock);
2836         /* Release all the lpfc_scsi_bufs maintained by this host. */
2837         spin_lock(&phba->scsi_buf_list_lock);
2838         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
2839                 list_del(&sb->list);
2840                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
2841                               sb->dma_handle);
2842                 kfree(sb);
2843                 phba->total_scsi_bufs--;
2844         }
2845         spin_unlock(&phba->scsi_buf_list_lock);
2846
2847         /* Release all the lpfc_iocbq entries maintained by this host. */
2848         list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
2849                 list_del(&io->list);
2850                 kfree(io);
2851                 phba->total_iocbq_bufs--;
2852         }
2853
2854         spin_unlock_irq(&phba->hbalock);
2855 }
2856
2857 /**
2858  * lpfc_sli4_xri_sgl_update - update xri-sgl sizing and mapping
2859  * @phba: pointer to lpfc hba data structure.
2860  *
2861  * This routine first calculates the sizes of the current els and allocated
2862  * scsi sgl lists, and then goes through all sgls to updates the physical
2863  * XRIs assigned due to port function reset. During port initialization, the
2864  * current els and allocated scsi sgl lists are 0s.
2865  *
2866  * Return codes
2867  *   0 - successful (for now, it always returns 0)
2868  **/
2869 int
2870 lpfc_sli4_xri_sgl_update(struct lpfc_hba *phba)
2871 {
2872         struct lpfc_sglq *sglq_entry = NULL, *sglq_entry_next = NULL;
2873         struct lpfc_scsi_buf *psb = NULL, *psb_next = NULL;
2874         uint16_t i, lxri, xri_cnt, els_xri_cnt, scsi_xri_cnt;
2875         LIST_HEAD(els_sgl_list);
2876         LIST_HEAD(scsi_sgl_list);
2877         int rc;
2878
2879         /*
2880          * update on pci function's els xri-sgl list
2881          */
2882         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
2883         if (els_xri_cnt > phba->sli4_hba.els_xri_cnt) {
2884                 /* els xri-sgl expanded */
2885                 xri_cnt = els_xri_cnt - phba->sli4_hba.els_xri_cnt;
2886                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2887                                 "3157 ELS xri-sgl count increased from "
2888                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
2889                                 els_xri_cnt);
2890                 /* allocate the additional els sgls */
2891                 for (i = 0; i < xri_cnt; i++) {
2892                         sglq_entry = kzalloc(sizeof(struct lpfc_sglq),
2893                                              GFP_KERNEL);
2894                         if (sglq_entry == NULL) {
2895                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2896                                                 "2562 Failure to allocate an "
2897                                                 "ELS sgl entry:%d\n", i);
2898                                 rc = -ENOMEM;
2899                                 goto out_free_mem;
2900                         }
2901                         sglq_entry->buff_type = GEN_BUFF_TYPE;
2902                         sglq_entry->virt = lpfc_mbuf_alloc(phba, 0,
2903                                                            &sglq_entry->phys);
2904                         if (sglq_entry->virt == NULL) {
2905                                 kfree(sglq_entry);
2906                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2907                                                 "2563 Failure to allocate an "
2908                                                 "ELS mbuf:%d\n", i);
2909                                 rc = -ENOMEM;
2910                                 goto out_free_mem;
2911                         }
2912                         sglq_entry->sgl = sglq_entry->virt;
2913                         memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
2914                         sglq_entry->state = SGL_FREED;
2915                         list_add_tail(&sglq_entry->list, &els_sgl_list);
2916                 }
2917                 spin_lock_irq(&phba->hbalock);
2918                 list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list);
2919                 spin_unlock_irq(&phba->hbalock);
2920         } else if (els_xri_cnt < phba->sli4_hba.els_xri_cnt) {
2921                 /* els xri-sgl shrinked */
2922                 xri_cnt = phba->sli4_hba.els_xri_cnt - els_xri_cnt;
2923                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2924                                 "3158 ELS xri-sgl count decreased from "
2925                                 "%d to %d\n", phba->sli4_hba.els_xri_cnt,
2926                                 els_xri_cnt);
2927                 spin_lock_irq(&phba->hbalock);
2928                 list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &els_sgl_list);
2929                 spin_unlock_irq(&phba->hbalock);
2930                 /* release extra els sgls from list */
2931                 for (i = 0; i < xri_cnt; i++) {
2932                         list_remove_head(&els_sgl_list,
2933                                          sglq_entry, struct lpfc_sglq, list);
2934                         if (sglq_entry) {
2935                                 lpfc_mbuf_free(phba, sglq_entry->virt,
2936                                                sglq_entry->phys);
2937                                 kfree(sglq_entry);
2938                         }
2939                 }
2940                 spin_lock_irq(&phba->hbalock);
2941                 list_splice_init(&els_sgl_list, &phba->sli4_hba.lpfc_sgl_list);
2942                 spin_unlock_irq(&phba->hbalock);
2943         } else
2944                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2945                                 "3163 ELS xri-sgl count unchanged: %d\n",
2946                                 els_xri_cnt);
2947         phba->sli4_hba.els_xri_cnt = els_xri_cnt;
2948
2949         /* update xris to els sgls on the list */
2950         sglq_entry = NULL;
2951         sglq_entry_next = NULL;
2952         list_for_each_entry_safe(sglq_entry, sglq_entry_next,
2953                                  &phba->sli4_hba.lpfc_sgl_list, list) {
2954                 lxri = lpfc_sli4_next_xritag(phba);
2955                 if (lxri == NO_XRI) {
2956                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2957                                         "2400 Failed to allocate xri for "
2958                                         "ELS sgl\n");
2959                         rc = -ENOMEM;
2960                         goto out_free_mem;
2961                 }
2962                 sglq_entry->sli4_lxritag = lxri;
2963                 sglq_entry->sli4_xritag = phba->sli4_hba.xri_ids[lxri];
2964         }
2965
2966         /*
2967          * update on pci function's allocated scsi xri-sgl list
2968          */
2969         phba->total_scsi_bufs = 0;
2970
2971         /* maximum number of xris available for scsi buffers */
2972         phba->sli4_hba.scsi_xri_max = phba->sli4_hba.max_cfg_param.max_xri -
2973                                       els_xri_cnt;
2974
2975         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2976                         "2401 Current allocated SCSI xri-sgl count:%d, "
2977                         "maximum  SCSI xri count:%d\n",
2978                         phba->sli4_hba.scsi_xri_cnt,
2979                         phba->sli4_hba.scsi_xri_max);
2980
2981         spin_lock_irq(&phba->scsi_buf_list_lock);
2982         list_splice_init(&phba->lpfc_scsi_buf_list, &scsi_sgl_list);
2983         spin_unlock_irq(&phba->scsi_buf_list_lock);
2984
2985         if (phba->sli4_hba.scsi_xri_cnt > phba->sli4_hba.scsi_xri_max) {
2986                 /* max scsi xri shrinked below the allocated scsi buffers */
2987                 scsi_xri_cnt = phba->sli4_hba.scsi_xri_cnt -
2988                                         phba->sli4_hba.scsi_xri_max;
2989                 /* release the extra allocated scsi buffers */
2990                 for (i = 0; i < scsi_xri_cnt; i++) {
2991                         list_remove_head(&scsi_sgl_list, psb,
2992                                          struct lpfc_scsi_buf, list);
2993                         pci_pool_free(phba->lpfc_scsi_dma_buf_pool, psb->data,
2994                                       psb->dma_handle);
2995                         kfree(psb);
2996                 }
2997                 spin_lock_irq(&phba->scsi_buf_list_lock);
2998                 phba->sli4_hba.scsi_xri_cnt -= scsi_xri_cnt;
2999                 spin_unlock_irq(&phba->scsi_buf_list_lock);
3000         }
3001
3002         /* update xris associated to remaining allocated scsi buffers */
3003         psb = NULL;
3004         psb_next = NULL;
3005         list_for_each_entry_safe(psb, psb_next, &scsi_sgl_list, list) {
3006                 lxri = lpfc_sli4_next_xritag(phba);
3007                 if (lxri == NO_XRI) {
3008                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3009                                         "2560 Failed to allocate xri for "
3010                                         "scsi buffer\n");
3011                         rc = -ENOMEM;
3012                         goto out_free_mem;
3013                 }
3014                 psb->cur_iocbq.sli4_lxritag = lxri;
3015                 psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri];
3016         }
3017         spin_lock_irq(&phba->scsi_buf_list_lock);
3018         list_splice_init(&scsi_sgl_list, &phba->lpfc_scsi_buf_list);
3019         spin_unlock_irq(&phba->scsi_buf_list_lock);
3020
3021         return 0;
3022
3023 out_free_mem:
3024         lpfc_free_els_sgl_list(phba);
3025         lpfc_scsi_free(phba);
3026         return rc;
3027 }
3028
3029 /**
3030  * lpfc_create_port - Create an FC port
3031  * @phba: pointer to lpfc hba data structure.
3032  * @instance: a unique integer ID to this FC port.
3033  * @dev: pointer to the device data structure.
3034  *
3035  * This routine creates a FC port for the upper layer protocol. The FC port
3036  * can be created on top of either a physical port or a virtual port provided
3037  * by the HBA. This routine also allocates a SCSI host data structure (shost)
3038  * and associates the FC port created before adding the shost into the SCSI
3039  * layer.
3040  *
3041  * Return codes
3042  *   @vport - pointer to the virtual N_Port data structure.
3043  *   NULL - port create failed.
3044  **/
3045 struct lpfc_vport *
3046 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
3047 {
3048         struct lpfc_vport *vport;
3049         struct Scsi_Host  *shost;
3050         int error = 0;
3051
3052         if (dev != &phba->pcidev->dev)
3053                 shost = scsi_host_alloc(&lpfc_vport_template,
3054                                         sizeof(struct lpfc_vport));
3055         else
3056                 shost = scsi_host_alloc(&lpfc_template,
3057                                         sizeof(struct lpfc_vport));
3058         if (!shost)
3059                 goto out;
3060
3061         vport = (struct lpfc_vport *) shost->hostdata;
3062         vport->phba = phba;
3063         vport->load_flag |= FC_LOADING;
3064         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
3065         vport->fc_rscn_flush = 0;
3066
3067         lpfc_get_vport_cfgparam(vport);
3068         shost->unique_id = instance;
3069         shost->max_id = LPFC_MAX_TARGET;
3070         shost->max_lun = vport->cfg_max_luns;
3071         shost->this_id = -1;
3072         shost->max_cmd_len = 16;
3073         if (phba->sli_rev == LPFC_SLI_REV4) {
3074                 shost->dma_boundary =
3075                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
3076                 shost->sg_tablesize = phba->cfg_sg_seg_cnt;
3077         }
3078
3079         /*
3080          * Set initial can_queue value since 0 is no longer supported and
3081          * scsi_add_host will fail. This will be adjusted later based on the
3082          * max xri value determined in hba setup.
3083          */
3084         shost->can_queue = phba->cfg_hba_queue_depth - 10;
3085         if (dev != &phba->pcidev->dev) {
3086                 shost->transportt = lpfc_vport_transport_template;
3087                 vport->port_type = LPFC_NPIV_PORT;
3088         } else {
3089                 shost->transportt = lpfc_transport_template;
3090                 vport->port_type = LPFC_PHYSICAL_PORT;
3091         }
3092
3093         /* Initialize all internally managed lists. */
3094         INIT_LIST_HEAD(&vport->fc_nodes);
3095         INIT_LIST_HEAD(&vport->rcv_buffer_list);
3096         spin_lock_init(&vport->work_port_lock);
3097
3098         init_timer(&vport->fc_disctmo);
3099         vport->fc_disctmo.function = lpfc_disc_timeout;
3100         vport->fc_disctmo.data = (unsigned long)vport;
3101
3102         init_timer(&vport->fc_fdmitmo);
3103         vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
3104         vport->fc_fdmitmo.data = (unsigned long)vport;
3105
3106         init_timer(&vport->els_tmofunc);
3107         vport->els_tmofunc.function = lpfc_els_timeout;
3108         vport->els_tmofunc.data = (unsigned long)vport;
3109
3110         init_timer(&vport->delayed_disc_tmo);
3111         vport->delayed_disc_tmo.function = lpfc_delayed_disc_tmo;
3112         vport->delayed_disc_tmo.data = (unsigned long)vport;
3113
3114         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
3115         if (error)
3116                 goto out_put_shost;
3117
3118         spin_lock_irq(&phba->hbalock);
3119         list_add_tail(&vport->listentry, &phba->port_list);
3120         spin_unlock_irq(&phba->hbalock);
3121         return vport;
3122
3123 out_put_shost:
3124         scsi_host_put(shost);
3125 out:
3126         return NULL;
3127 }
3128
3129 /**
3130  * destroy_port -  destroy an FC port
3131  * @vport: pointer to an lpfc virtual N_Port data structure.
3132  *
3133  * This routine destroys a FC port from the upper layer protocol. All the
3134  * resources associated with the port are released.
3135  **/
3136 void
3137 destroy_port(struct lpfc_vport *vport)
3138 {
3139         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
3140         struct lpfc_hba  *phba = vport->phba;
3141
3142         lpfc_debugfs_terminate(vport);
3143         fc_remove_host(shost);
3144         scsi_remove_host(shost);
3145
3146         spin_lock_irq(&phba->hbalock);
3147         list_del_init(&vport->listentry);
3148         spin_unlock_irq(&phba->hbalock);
3149
3150         lpfc_cleanup(vport);
3151         return;
3152 }
3153
3154 /**
3155  * lpfc_get_instance - Get a unique integer ID
3156  *
3157  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
3158  * uses the kernel idr facility to perform the task.
3159  *
3160  * Return codes:
3161  *   instance - a unique integer ID allocated as the new instance.
3162  *   -1 - lpfc get instance failed.
3163  **/
3164 int
3165 lpfc_get_instance(void)
3166 {
3167         int ret;
3168
3169         ret = idr_alloc(&lpfc_hba_index, NULL, 0, 0, GFP_KERNEL);
3170         return ret < 0 ? -1 : ret;
3171 }
3172
3173 /**
3174  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
3175  * @shost: pointer to SCSI host data structure.
3176  * @time: elapsed time of the scan in jiffies.
3177  *
3178  * This routine is called by the SCSI layer with a SCSI host to determine
3179  * whether the scan host is finished.
3180  *
3181  * Note: there is no scan_start function as adapter initialization will have
3182  * asynchronously kicked off the link initialization.
3183  *
3184  * Return codes
3185  *   0 - SCSI host scan is not over yet.
3186  *   1 - SCSI host scan is over.
3187  **/
3188 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
3189 {
3190         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3191         struct lpfc_hba   *phba = vport->phba;
3192         int stat = 0;
3193
3194         spin_lock_irq(shost->host_lock);
3195
3196         if (vport->load_flag & FC_UNLOADING) {
3197                 stat = 1;
3198                 goto finished;
3199         }
3200         if (time >= 30 * HZ) {
3201                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3202                                 "0461 Scanning longer than 30 "
3203                                 "seconds.  Continuing initialization\n");
3204                 stat = 1;
3205                 goto finished;
3206         }
3207         if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) {
3208                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3209                                 "0465 Link down longer than 15 "
3210                                 "seconds.  Continuing initialization\n");
3211                 stat = 1;
3212                 goto finished;
3213         }
3214
3215         if (vport->port_state != LPFC_VPORT_READY)
3216                 goto finished;
3217         if (vport->num_disc_nodes || vport->fc_prli_sent)
3218                 goto finished;
3219         if (vport->fc_map_cnt == 0 && time < 2 * HZ)
3220                 goto finished;
3221         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
3222                 goto finished;
3223
3224         stat = 1;
3225
3226 finished:
3227         spin_unlock_irq(shost->host_lock);
3228         return stat;
3229 }
3230
3231 /**
3232  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
3233  * @shost: pointer to SCSI host data structure.
3234  *
3235  * This routine initializes a given SCSI host attributes on a FC port. The
3236  * SCSI host can be either on top of a physical port or a virtual port.
3237  **/
3238 void lpfc_host_attrib_init(struct Scsi_Host *shost)
3239 {
3240         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
3241         struct lpfc_hba   *phba = vport->phba;
3242         /*
3243          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
3244          */
3245
3246         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
3247         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
3248         fc_host_supported_classes(shost) = FC_COS_CLASS3;
3249
3250         memset(fc_host_supported_fc4s(shost), 0,
3251                sizeof(fc_host_supported_fc4s(shost)));
3252         fc_host_supported_fc4s(shost)[2] = 1;
3253         fc_host_supported_fc4s(shost)[7] = 1;
3254
3255         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
3256                                  sizeof fc_host_symbolic_name(shost));
3257
3258         fc_host_supported_speeds(shost) = 0;
3259         if (phba->lmt & LMT_16Gb)
3260                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_16GBIT;
3261         if (phba->lmt & LMT_10Gb)
3262                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
3263         if (phba->lmt & LMT_8Gb)
3264                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
3265         if (phba->lmt & LMT_4Gb)
3266                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
3267         if (phba->lmt & LMT_2Gb)
3268                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
3269         if (phba->lmt & LMT_1Gb)
3270                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
3271
3272         fc_host_maxframe_size(shost) =
3273                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
3274                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
3275
3276         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
3277
3278         /* This value is also unchanging */
3279         memset(fc_host_active_fc4s(shost), 0,
3280                sizeof(fc_host_active_fc4s(shost)));
3281         fc_host_active_fc4s(shost)[2] = 1;
3282         fc_host_active_fc4s(shost)[7] = 1;
3283
3284         fc_host_max_npiv_vports(shost) = phba->max_vpi;
3285         spin_lock_irq(shost->host_lock);
3286         vport->load_flag &= ~FC_LOADING;
3287         spin_unlock_irq(shost->host_lock);
3288 }
3289
3290 /**
3291  * lpfc_stop_port_s3 - Stop SLI3 device port
3292  * @phba: pointer to lpfc hba data structure.
3293  *
3294  * This routine is invoked to stop an SLI3 device port, it stops the device
3295  * from generating interrupts and stops the device driver's timers for the
3296  * device.
3297  **/
3298 static void
3299 lpfc_stop_port_s3(struct lpfc_hba *phba)
3300 {
3301         /* Clear all interrupt enable conditions */
3302         writel(0, phba->HCregaddr);
3303         readl(phba->HCregaddr); /* flush */
3304         /* Clear all pending interrupts */
3305         writel(0xffffffff, phba->HAregaddr);
3306         readl(phba->HAregaddr); /* flush */
3307
3308         /* Reset some HBA SLI setup states */
3309         lpfc_stop_hba_timers(phba);
3310         phba->pport->work_port_events = 0;
3311 }
3312
3313 /**
3314  * lpfc_stop_port_s4 - Stop SLI4 device port
3315  * @phba: pointer to lpfc hba data structure.
3316  *
3317  * This routine is invoked to stop an SLI4 device port, it stops the device
3318  * from generating interrupts and stops the device driver's timers for the
3319  * device.
3320  **/
3321 static void
3322 lpfc_stop_port_s4(struct lpfc_hba *phba)
3323 {
3324         /* Reset some HBA SLI4 setup states */
3325         lpfc_stop_hba_timers(phba);
3326         phba->pport->work_port_events = 0;
3327         phba->sli4_hba.intr_enable = 0;
3328 }
3329
3330 /**
3331  * lpfc_stop_port - Wrapper function for stopping hba port
3332  * @phba: Pointer to HBA context object.
3333  *
3334  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
3335  * the API jump table function pointer from the lpfc_hba struct.
3336  **/
3337 void
3338 lpfc_stop_port(struct lpfc_hba *phba)
3339 {
3340         phba->lpfc_stop_port(phba);
3341 }
3342
3343 /**
3344  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
3345  * @phba: Pointer to hba for which this call is being executed.
3346  *
3347  * This routine starts the timer waiting for the FCF rediscovery to complete.
3348  **/
3349 void
3350 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
3351 {
3352         unsigned long fcf_redisc_wait_tmo =
3353                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
3354         /* Start fcf rediscovery wait period timer */
3355         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
3356         spin_lock_irq(&phba->hbalock);
3357         /* Allow action to new fcf asynchronous event */
3358         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
3359         /* Mark the FCF rediscovery pending state */
3360         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
3361         spin_unlock_irq(&phba->hbalock);
3362 }
3363
3364 /**
3365  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
3366  * @ptr: Map to lpfc_hba data structure pointer.
3367  *
3368  * This routine is invoked when waiting for FCF table rediscover has been
3369  * timed out. If new FCF record(s) has (have) been discovered during the
3370  * wait period, a new FCF event shall be added to the FCOE async event
3371  * list, and then worker thread shall be waked up for processing from the
3372  * worker thread context.
3373  **/
3374 void
3375 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
3376 {
3377         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
3378
3379         /* Don't send FCF rediscovery event if timer cancelled */
3380         spin_lock_irq(&phba->hbalock);
3381         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3382                 spin_unlock_irq(&phba->hbalock);
3383                 return;
3384         }
3385         /* Clear FCF rediscovery timer pending flag */
3386         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3387         /* FCF rediscovery event to worker thread */
3388         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
3389         spin_unlock_irq(&phba->hbalock);
3390         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3391                         "2776 FCF rediscover quiescent timer expired\n");
3392         /* wake up worker thread */
3393         lpfc_worker_wake_up(phba);
3394 }
3395
3396 /**
3397  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3398  * @phba: pointer to lpfc hba data structure.
3399  * @acqe_link: pointer to the async link completion queue entry.
3400  *
3401  * This routine is to parse the SLI4 link-attention link fault code and
3402  * translate it into the base driver's read link attention mailbox command
3403  * status.
3404  *
3405  * Return: Link-attention status in terms of base driver's coding.
3406  **/
3407 static uint16_t
3408 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3409                            struct lpfc_acqe_link *acqe_link)
3410 {
3411         uint16_t latt_fault;
3412
3413         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3414         case LPFC_ASYNC_LINK_FAULT_NONE:
3415         case LPFC_ASYNC_LINK_FAULT_LOCAL:
3416         case LPFC_ASYNC_LINK_FAULT_REMOTE:
3417                 latt_fault = 0;
3418                 break;
3419         default:
3420                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3421                                 "0398 Invalid link fault code: x%x\n",
3422                                 bf_get(lpfc_acqe_link_fault, acqe_link));
3423                 latt_fault = MBXERR_ERROR;
3424                 break;
3425         }
3426         return latt_fault;
3427 }
3428
3429 /**
3430  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3431  * @phba: pointer to lpfc hba data structure.
3432  * @acqe_link: pointer to the async link completion queue entry.
3433  *
3434  * This routine is to parse the SLI4 link attention type and translate it
3435  * into the base driver's link attention type coding.
3436  *
3437  * Return: Link attention type in terms of base driver's coding.
3438  **/
3439 static uint8_t
3440 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3441                           struct lpfc_acqe_link *acqe_link)
3442 {
3443         uint8_t att_type;
3444
3445         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3446         case LPFC_ASYNC_LINK_STATUS_DOWN:
3447         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3448                 att_type = LPFC_ATT_LINK_DOWN;
3449                 break;
3450         case LPFC_ASYNC_LINK_STATUS_UP:
3451                 /* Ignore physical link up events - wait for logical link up */
3452                 att_type = LPFC_ATT_RESERVED;
3453                 break;
3454         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3455                 att_type = LPFC_ATT_LINK_UP;
3456                 break;
3457         default:
3458                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3459                                 "0399 Invalid link attention type: x%x\n",
3460                                 bf_get(lpfc_acqe_link_status, acqe_link));
3461                 att_type = LPFC_ATT_RESERVED;
3462                 break;
3463         }
3464         return att_type;
3465 }
3466
3467 /**
3468  * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed
3469  * @phba: pointer to lpfc hba data structure.
3470  * @acqe_link: pointer to the async link completion queue entry.
3471  *
3472  * This routine is to parse the SLI4 link-attention link speed and translate
3473  * it into the base driver's link-attention link speed coding.
3474  *
3475  * Return: Link-attention link speed in terms of base driver's coding.
3476  **/
3477 static uint8_t
3478 lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba,
3479                                 struct lpfc_acqe_link *acqe_link)
3480 {
3481         uint8_t link_speed;
3482
3483         switch (bf_get(lpfc_acqe_link_speed, acqe_link)) {
3484         case LPFC_ASYNC_LINK_SPEED_ZERO:
3485         case LPFC_ASYNC_LINK_SPEED_10MBPS:
3486         case LPFC_ASYNC_LINK_SPEED_100MBPS:
3487                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3488                 break;
3489         case LPFC_ASYNC_LINK_SPEED_1GBPS:
3490                 link_speed = LPFC_LINK_SPEED_1GHZ;
3491                 break;
3492         case LPFC_ASYNC_LINK_SPEED_10GBPS:
3493                 link_speed = LPFC_LINK_SPEED_10GHZ;
3494                 break;
3495         default:
3496                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3497                                 "0483 Invalid link-attention link speed: x%x\n",
3498                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3499                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3500                 break;
3501         }
3502         return link_speed;
3503 }
3504
3505 /**
3506  * lpfc_sli_port_speed_get - Get sli3 link speed code to link speed
3507  * @phba: pointer to lpfc hba data structure.
3508  *
3509  * This routine is to get an SLI3 FC port's link speed in Mbps.
3510  *
3511  * Return: link speed in terms of Mbps.
3512  **/
3513 uint32_t
3514 lpfc_sli_port_speed_get(struct lpfc_hba *phba)
3515 {
3516         uint32_t link_speed;
3517
3518         if (!lpfc_is_link_up(phba))
3519                 return 0;
3520
3521         switch (phba->fc_linkspeed) {
3522         case LPFC_LINK_SPEED_1GHZ:
3523                 link_speed = 1000;
3524                 break;
3525         case LPFC_LINK_SPEED_2GHZ:
3526                 link_speed = 2000;
3527                 break;
3528         case LPFC_LINK_SPEED_4GHZ:
3529                 link_speed = 4000;
3530                 break;
3531         case LPFC_LINK_SPEED_8GHZ:
3532                 link_speed = 8000;
3533                 break;
3534         case LPFC_LINK_SPEED_10GHZ:
3535                 link_speed = 10000;
3536                 break;
3537         case LPFC_LINK_SPEED_16GHZ:
3538                 link_speed = 16000;
3539                 break;
3540         default:
3541                 link_speed = 0;
3542         }
3543         return link_speed;
3544 }
3545
3546 /**
3547  * lpfc_sli4_port_speed_parse - Parse async evt link speed code to link speed
3548  * @phba: pointer to lpfc hba data structure.
3549  * @evt_code: asynchronous event code.
3550  * @speed_code: asynchronous event link speed code.
3551  *
3552  * This routine is to parse the giving SLI4 async event link speed code into
3553  * value of Mbps for the link speed.
3554  *
3555  * Return: link speed in terms of Mbps.
3556  **/
3557 static uint32_t
3558 lpfc_sli4_port_speed_parse(struct lpfc_hba *phba, uint32_t evt_code,
3559                            uint8_t speed_code)
3560 {
3561         uint32_t port_speed;
3562
3563         switch (evt_code) {
3564         case LPFC_TRAILER_CODE_LINK:
3565                 switch (speed_code) {
3566                 case LPFC_EVT_CODE_LINK_NO_LINK:
3567                         port_speed = 0;
3568                         break;
3569                 case LPFC_EVT_CODE_LINK_10_MBIT:
3570                         port_speed = 10;
3571                         break;
3572                 case LPFC_EVT_CODE_LINK_100_MBIT:
3573                         port_speed = 100;
3574                         break;
3575                 case LPFC_EVT_CODE_LINK_1_GBIT:
3576                         port_speed = 1000;
3577                         break;
3578                 case LPFC_EVT_CODE_LINK_10_GBIT:
3579                         port_speed = 10000;
3580                         break;
3581                 default:
3582                         port_speed = 0;
3583                 }
3584                 break;
3585         case LPFC_TRAILER_CODE_FC:
3586                 switch (speed_code) {
3587                 case LPFC_EVT_CODE_FC_NO_LINK:
3588                         port_speed = 0;
3589                         break;
3590                 case LPFC_EVT_CODE_FC_1_GBAUD:
3591                         port_speed = 1000;
3592                         break;
3593                 case LPFC_EVT_CODE_FC_2_GBAUD:
3594                         port_speed = 2000;
3595                         break;
3596                 case LPFC_EVT_CODE_FC_4_GBAUD:
3597                         port_speed = 4000;
3598                         break;
3599                 case LPFC_EVT_CODE_FC_8_GBAUD:
3600                         port_speed = 8000;
3601                         break;
3602                 case LPFC_EVT_CODE_FC_10_GBAUD:
3603                         port_speed = 10000;
3604                         break;
3605                 case LPFC_EVT_CODE_FC_16_GBAUD:
3606                         port_speed = 16000;
3607                         break;
3608                 default:
3609                         port_speed = 0;
3610                 }
3611                 break;
3612         default:
3613                 port_speed = 0;
3614         }
3615         return port_speed;
3616 }
3617
3618 /**
3619  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
3620  * @phba: pointer to lpfc hba data structure.
3621  * @acqe_link: pointer to the async link completion queue entry.
3622  *
3623  * This routine is to handle the SLI4 asynchronous FCoE link event.
3624  **/
3625 static void
3626 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3627                          struct lpfc_acqe_link *acqe_link)
3628 {
3629         struct lpfc_dmabuf *mp;
3630         LPFC_MBOXQ_t *pmb;
3631         MAILBOX_t *mb;
3632         struct lpfc_mbx_read_top *la;
3633         uint8_t att_type;
3634         int rc;
3635
3636         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3637         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
3638                 return;
3639         phba->fcoe_eventtag = acqe_link->event_tag;
3640         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3641         if (!pmb) {
3642                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3643                                 "0395 The mboxq allocation failed\n");
3644                 return;
3645         }
3646         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3647         if (!mp) {
3648                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3649                                 "0396 The lpfc_dmabuf allocation failed\n");
3650                 goto out_free_pmb;
3651         }
3652         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3653         if (!mp->virt) {
3654                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3655                                 "0397 The mbuf allocation failed\n");
3656                 goto out_free_dmabuf;
3657         }
3658
3659         /* Cleanup any outstanding ELS commands */
3660         lpfc_els_flush_all_cmd(phba);
3661
3662         /* Block ELS IOCBs until we have done process link event */
3663         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3664
3665         /* Update link event statistics */
3666         phba->sli.slistat.link_event++;
3667
3668         /* Create lpfc_handle_latt mailbox command from link ACQE */
3669         lpfc_read_topology(phba, pmb, mp);
3670         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3671         pmb->vport = phba->pport;
3672
3673         /* Keep the link status for extra SLI4 state machine reference */
3674         phba->sli4_hba.link_state.speed =
3675                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_LINK,
3676                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3677         phba->sli4_hba.link_state.duplex =
3678                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
3679         phba->sli4_hba.link_state.status =
3680                                 bf_get(lpfc_acqe_link_status, acqe_link);
3681         phba->sli4_hba.link_state.type =
3682                                 bf_get(lpfc_acqe_link_type, acqe_link);
3683         phba->sli4_hba.link_state.number =
3684                                 bf_get(lpfc_acqe_link_number, acqe_link);
3685         phba->sli4_hba.link_state.fault =
3686                                 bf_get(lpfc_acqe_link_fault, acqe_link);
3687         phba->sli4_hba.link_state.logical_speed =
3688                         bf_get(lpfc_acqe_logical_link_speed, acqe_link) * 10;
3689
3690         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3691                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
3692                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
3693                         "Logical speed:%dMbps Fault:%d\n",
3694                         phba->sli4_hba.link_state.speed,
3695                         phba->sli4_hba.link_state.topology,
3696                         phba->sli4_hba.link_state.status,
3697                         phba->sli4_hba.link_state.type,
3698                         phba->sli4_hba.link_state.number,
3699                         phba->sli4_hba.link_state.logical_speed,
3700                         phba->sli4_hba.link_state.fault);
3701         /*
3702          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
3703          * topology info. Note: Optional for non FC-AL ports.
3704          */
3705         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3706                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3707                 if (rc == MBX_NOT_FINISHED)
3708                         goto out_free_dmabuf;
3709                 return;
3710         }
3711         /*
3712          * For FCoE Mode: fill in all the topology information we need and call
3713          * the READ_TOPOLOGY completion routine to continue without actually
3714          * sending the READ_TOPOLOGY mailbox command to the port.
3715          */
3716         /* Parse and translate status field */
3717         mb = &pmb->u.mb;
3718         mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
3719
3720         /* Parse and translate link attention fields */
3721         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3722         la->eventTag = acqe_link->event_tag;
3723         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
3724         bf_set(lpfc_mbx_read_top_link_spd, la,
3725                lpfc_sli4_parse_latt_link_speed(phba, acqe_link));
3726
3727         /* Fake the the following irrelvant fields */
3728         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
3729         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
3730         bf_set(lpfc_mbx_read_top_il, la, 0);
3731         bf_set(lpfc_mbx_read_top_pb, la, 0);
3732         bf_set(lpfc_mbx_read_top_fa, la, 0);
3733         bf_set(lpfc_mbx_read_top_mm, la, 0);
3734
3735         /* Invoke the lpfc_handle_latt mailbox command callback function */
3736         lpfc_mbx_cmpl_read_topology(phba, pmb);
3737
3738         return;
3739
3740 out_free_dmabuf:
3741         kfree(mp);
3742 out_free_pmb:
3743         mempool_free(pmb, phba->mbox_mem_pool);
3744 }
3745
3746 /**
3747  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
3748  * @phba: pointer to lpfc hba data structure.
3749  * @acqe_fc: pointer to the async fc completion queue entry.
3750  *
3751  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
3752  * that the event was received and then issue a read_topology mailbox command so
3753  * that the rest of the driver will treat it the same as SLI3.
3754  **/
3755 static void
3756 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
3757 {
3758         struct lpfc_dmabuf *mp;
3759         LPFC_MBOXQ_t *pmb;
3760         int rc;
3761
3762         if (bf_get(lpfc_trailer_type, acqe_fc) !=
3763             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
3764                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3765                                 "2895 Non FC link Event detected.(%d)\n",
3766                                 bf_get(lpfc_trailer_type, acqe_fc));
3767                 return;
3768         }
3769         /* Keep the link status for extra SLI4 state machine reference */
3770         phba->sli4_hba.link_state.speed =
3771                         lpfc_sli4_port_speed_parse(phba, LPFC_TRAILER_CODE_FC,
3772                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc));
3773         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
3774         phba->sli4_hba.link_state.topology =
3775                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
3776         phba->sli4_hba.link_state.status =
3777                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
3778         phba->sli4_hba.link_state.type =
3779                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
3780         phba->sli4_hba.link_state.number =
3781                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
3782         phba->sli4_hba.link_state.fault =
3783                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
3784         phba->sli4_hba.link_state.logical_speed =
3785                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc) * 10;
3786         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3787                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
3788                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
3789                         "%dMbps Fault:%d\n",
3790                         phba->sli4_hba.link_state.speed,
3791                         phba->sli4_hba.link_state.topology,
3792                         phba->sli4_hba.link_state.status,
3793                         phba->sli4_hba.link_state.type,
3794                         phba->sli4_hba.link_state.number,
3795                         phba->sli4_hba.link_state.logical_speed,
3796                         phba->sli4_hba.link_state.fault);
3797         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3798         if (!pmb) {
3799                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3800                                 "2897 The mboxq allocation failed\n");
3801                 return;
3802         }
3803         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3804         if (!mp) {
3805                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3806                                 "2898 The lpfc_dmabuf allocation failed\n");
3807                 goto out_free_pmb;
3808         }
3809         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3810         if (!mp->virt) {
3811                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3812                                 "2899 The mbuf allocation failed\n");
3813                 goto out_free_dmabuf;
3814         }
3815
3816         /* Cleanup any outstanding ELS commands */
3817         lpfc_els_flush_all_cmd(phba);
3818
3819         /* Block ELS IOCBs until we have done process link event */
3820         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3821
3822         /* Update link event statistics */
3823         phba->sli.slistat.link_event++;
3824
3825         /* Create lpfc_handle_latt mailbox command from link ACQE */
3826         lpfc_read_topology(phba, pmb, mp);
3827         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3828         pmb->vport = phba->pport;
3829
3830         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3831         if (rc == MBX_NOT_FINISHED)
3832                 goto out_free_dmabuf;
3833         return;
3834
3835 out_free_dmabuf:
3836         kfree(mp);
3837 out_free_pmb:
3838         mempool_free(pmb, phba->mbox_mem_pool);
3839 }
3840
3841 /**
3842  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
3843  * @phba: pointer to lpfc hba data structure.
3844  * @acqe_fc: pointer to the async SLI completion queue entry.
3845  *
3846  * This routine is to handle the SLI4 asynchronous SLI events.
3847  **/
3848 static void
3849 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
3850 {
3851         char port_name;
3852         char message[128];
3853         uint8_t status;
3854         struct lpfc_acqe_misconfigured_event *misconfigured;
3855
3856         /* special case misconfigured event as it contains data for all ports */
3857         if ((bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3858                  LPFC_SLI_INTF_IF_TYPE_2) ||
3859                 (bf_get(lpfc_trailer_type, acqe_sli) !=
3860                         LPFC_SLI_EVENT_TYPE_MISCONFIGURED)) {
3861                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3862                                 "2901 Async SLI event - Event Data1:x%08x Event Data2:"
3863                                 "x%08x SLI Event Type:%d\n",
3864                                 acqe_sli->event_data1, acqe_sli->event_data2,
3865                                 bf_get(lpfc_trailer_type, acqe_sli));
3866                 return;
3867         }
3868
3869         port_name = phba->Port[0];
3870         if (port_name == 0x00)
3871                 port_name = '?'; /* get port name is empty */
3872
3873         misconfigured = (struct lpfc_acqe_misconfigured_event *)
3874                                         &acqe_sli->event_data1;
3875
3876         /* fetch the status for this port */
3877         switch (phba->sli4_hba.lnk_info.lnk_no) {
3878         case LPFC_LINK_NUMBER_0:
3879                 status = bf_get(lpfc_sli_misconfigured_port0,
3880                                         &misconfigured->theEvent);
3881                 break;
3882         case LPFC_LINK_NUMBER_1:
3883                 status = bf_get(lpfc_sli_misconfigured_port1,
3884                                         &misconfigured->theEvent);
3885                 break;
3886         case LPFC_LINK_NUMBER_2:
3887                 status = bf_get(lpfc_sli_misconfigured_port2,
3888                                         &misconfigured->theEvent);
3889                 break;
3890         case LPFC_LINK_NUMBER_3:
3891                 status = bf_get(lpfc_sli_misconfigured_port3,
3892                                         &misconfigured->theEvent);
3893                 break;
3894         default:
3895                 status = ~LPFC_SLI_EVENT_STATUS_VALID;
3896                 break;
3897         }
3898
3899         switch (status) {
3900         case LPFC_SLI_EVENT_STATUS_VALID:
3901                 return; /* no message if the sfp is okay */
3902         case LPFC_SLI_EVENT_STATUS_NOT_PRESENT:
3903                 sprintf(message, "Optics faulted/incorrectly installed/not " \
3904                                 "installed - Reseat optics, if issue not "
3905                                 "resolved, replace.");
3906                 break;
3907         case LPFC_SLI_EVENT_STATUS_WRONG_TYPE:
3908                 sprintf(message,
3909                         "Optics of two types installed - Remove one optic or " \
3910                         "install matching pair of optics.");
3911                 break;
3912         case LPFC_SLI_EVENT_STATUS_UNSUPPORTED:
3913                 sprintf(message, "Incompatible optics - Replace with " \
3914                                 "compatible optics for card to function.");
3915                 break;
3916         default:
3917                 /* firmware is reporting a status we don't know about */
3918                 sprintf(message, "Unknown event status x%02x", status);
3919                 break;
3920         }
3921
3922         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3923                         "3176 Misconfigured Physical Port - "
3924                         "Port Name %c %s\n", port_name, message);
3925 }
3926
3927 /**
3928  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
3929  * @vport: pointer to vport data structure.
3930  *
3931  * This routine is to perform Clear Virtual Link (CVL) on a vport in
3932  * response to a CVL event.
3933  *
3934  * Return the pointer to the ndlp with the vport if successful, otherwise
3935  * return NULL.
3936  **/
3937 static struct lpfc_nodelist *
3938 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
3939 {
3940         struct lpfc_nodelist *ndlp;
3941         struct Scsi_Host *shost;
3942         struct lpfc_hba *phba;
3943
3944         if (!vport)
3945                 return NULL;
3946         phba = vport->phba;
3947         if (!phba)
3948                 return NULL;
3949         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3950         if (!ndlp) {
3951                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3952                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3953                 if (!ndlp)
3954                         return 0;
3955                 lpfc_nlp_init(vport, ndlp, Fabric_DID);
3956                 /* Set the node type */
3957                 ndlp->nlp_type |= NLP_FABRIC;
3958                 /* Put ndlp onto node list */
3959                 lpfc_enqueue_node(vport, ndlp);
3960         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3961                 /* re-setup ndlp without removing from node list */
3962                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
3963                 if (!ndlp)
3964                         return 0;
3965         }
3966         if ((phba->pport->port_state < LPFC_FLOGI) &&
3967                 (phba->pport->port_state != LPFC_VPORT_FAILED))
3968                 return NULL;
3969         /* If virtual link is not yet instantiated ignore CVL */
3970         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
3971                 && (vport->port_state != LPFC_VPORT_FAILED))
3972                 return NULL;
3973         shost = lpfc_shost_from_vport(vport);
3974         if (!shost)
3975                 return NULL;
3976         lpfc_linkdown_port(vport);
3977         lpfc_cleanup_pending_mbox(vport);
3978         spin_lock_irq(shost->host_lock);
3979         vport->fc_flag |= FC_VPORT_CVL_RCVD;
3980         spin_unlock_irq(shost->host_lock);
3981
3982         return ndlp;
3983 }
3984
3985 /**
3986  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
3987  * @vport: pointer to lpfc hba data structure.
3988  *
3989  * This routine is to perform Clear Virtual Link (CVL) on all vports in
3990  * response to a FCF dead event.
3991  **/
3992 static void
3993 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
3994 {
3995         struct lpfc_vport **vports;
3996         int i;
3997
3998         vports = lpfc_create_vport_work_array(phba);
3999         if (vports)
4000                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
4001                         lpfc_sli4_perform_vport_cvl(vports[i]);
4002         lpfc_destroy_vport_work_array(phba, vports);
4003 }
4004
4005 /**
4006  * lpfc_sli4_perform_inuse_fcf_recovery - Perform inuse fcf recovery
4007  * @vport: pointer to lpfc hba data structure.
4008  *
4009  * This routine is to perform FCF recovery when the in-use FCF either dead or
4010  * got modified.
4011  **/
4012 static void
4013 lpfc_sli4_perform_inuse_fcf_recovery(struct lpfc_hba *phba,
4014                                      struct lpfc_acqe_fip *acqe_fip)
4015 {
4016         int rc;
4017
4018         spin_lock_irq(&phba->hbalock);
4019         /* Mark the fast failover process in progress */
4020         phba->fcf.fcf_flag |= FCF_DEAD_DISC;
4021         spin_unlock_irq(&phba->hbalock);
4022
4023         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4024                         "2771 Start FCF fast failover process due to in-use "
4025                         "FCF DEAD/MODIFIED event: evt_tag:x%x, index:x%x\n",
4026                         acqe_fip->event_tag, acqe_fip->index);
4027         rc = lpfc_sli4_redisc_fcf_table(phba);
4028         if (rc) {
4029                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4030                                 "2772 Issue FCF rediscover mabilbox command "
4031                                 "failed, fail through to FCF dead event\n");
4032                 spin_lock_irq(&phba->hbalock);
4033                 phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
4034                 spin_unlock_irq(&phba->hbalock);
4035                 /*
4036                  * Last resort will fail over by treating this as a link
4037                  * down to FCF registration.
4038                  */
4039                 lpfc_sli4_fcf_dead_failthrough(phba);
4040         } else {
4041                 /* Reset FCF roundrobin bmask for new discovery */
4042                 lpfc_sli4_clear_fcf_rr_bmask(phba);
4043                 /*
4044                  * Handling fast FCF failover to a DEAD FCF event is
4045                  * considered equalivant to receiving CVL to all vports.
4046                  */
4047                 lpfc_sli4_perform_all_vport_cvl(phba);
4048         }
4049 }
4050
4051 /**
4052  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
4053  * @phba: pointer to lpfc hba data structure.
4054  * @acqe_link: pointer to the async fcoe completion queue entry.
4055  *
4056  * This routine is to handle the SLI4 asynchronous fcoe event.
4057  **/
4058 static void
4059 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
4060                         struct lpfc_acqe_fip *acqe_fip)
4061 {
4062         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
4063         int rc;
4064         struct lpfc_vport *vport;
4065         struct lpfc_nodelist *ndlp;
4066         struct Scsi_Host  *shost;
4067         int active_vlink_present;
4068         struct lpfc_vport **vports;
4069         int i;
4070
4071         phba->fc_eventTag = acqe_fip->event_tag;
4072         phba->fcoe_eventtag = acqe_fip->event_tag;
4073         switch (event_type) {
4074         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
4075         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
4076                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
4077                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
4078                                         LOG_DISCOVERY,
4079                                         "2546 New FCF event, evt_tag:x%x, "
4080                                         "index:x%x\n",
4081                                         acqe_fip->event_tag,
4082                                         acqe_fip->index);
4083                 else
4084                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
4085                                         LOG_DISCOVERY,
4086                                         "2788 FCF param modified event, "
4087                                         "evt_tag:x%x, index:x%x\n",
4088                                         acqe_fip->event_tag,
4089                                         acqe_fip->index);
4090                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4091                         /*
4092                          * During period of FCF discovery, read the FCF
4093                          * table record indexed by the event to update
4094                          * FCF roundrobin failover eligible FCF bmask.
4095                          */
4096                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
4097                                         LOG_DISCOVERY,
4098                                         "2779 Read FCF (x%x) for updating "
4099                                         "roundrobin FCF failover bmask\n",
4100                                         acqe_fip->index);
4101                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
4102                 }
4103
4104                 /* If the FCF discovery is in progress, do nothing. */
4105                 spin_lock_irq(&phba->hbalock);
4106                 if (phba->hba_flag & FCF_TS_INPROG) {
4107                         spin_unlock_irq(&phba->hbalock);
4108                         break;
4109                 }
4110                 /* If fast FCF failover rescan event is pending, do nothing */
4111                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
4112                         spin_unlock_irq(&phba->hbalock);
4113                         break;
4114                 }
4115
4116                 /* If FCF has been in discovered state, perform rediscovery
4117                  * only if the FCF with the same index of the in-use FCF got
4118                  * modified during normal operation. Otherwise, do nothing.
4119                  */
4120                 if (phba->pport->port_state > LPFC_FLOGI) {
4121                         spin_unlock_irq(&phba->hbalock);
4122                         if (phba->fcf.current_rec.fcf_indx ==
4123                             acqe_fip->index) {
4124                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
4125                                                 "3300 In-use FCF (%d) "
4126                                                 "modified, perform FCF "
4127                                                 "rediscovery\n",
4128                                                 acqe_fip->index);
4129                                 lpfc_sli4_perform_inuse_fcf_recovery(phba,
4130                                                                      acqe_fip);
4131                         }
4132                         break;
4133                 }
4134                 spin_unlock_irq(&phba->hbalock);
4135
4136                 /* Otherwise, scan the entire FCF table and re-discover SAN */
4137                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4138                                 "2770 Start FCF table scan per async FCF "
4139                                 "event, evt_tag:x%x, index:x%x\n",
4140                                 acqe_fip->event_tag, acqe_fip->index);
4141                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
4142                                                      LPFC_FCOE_FCF_GET_FIRST);
4143                 if (rc)
4144                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4145                                         "2547 Issue FCF scan read FCF mailbox "
4146                                         "command failed (x%x)\n", rc);
4147                 break;
4148
4149         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
4150                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4151                         "2548 FCF Table full count 0x%x tag 0x%x\n",
4152                         bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
4153                         acqe_fip->event_tag);
4154                 break;
4155
4156         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
4157                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
4158                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4159                         "2549 FCF (x%x) disconnected from network, "
4160                         "tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
4161                 /*
4162                  * If we are in the middle of FCF failover process, clear
4163                  * the corresponding FCF bit in the roundrobin bitmap.
4164                  */
4165                 spin_lock_irq(&phba->hbalock);
4166                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4167                         spin_unlock_irq(&phba->hbalock);
4168                         /* Update FLOGI FCF failover eligible FCF bmask */
4169                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
4170                         break;
4171                 }
4172                 spin_unlock_irq(&phba->hbalock);
4173
4174                 /* If the event is not for currently used fcf do nothing */
4175                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
4176                         break;
4177
4178                 /*
4179                  * Otherwise, request the port to rediscover the entire FCF
4180                  * table for a fast recovery from case that the current FCF
4181                  * is no longer valid as we are not in the middle of FCF
4182                  * failover process already.
4183                  */
4184                 lpfc_sli4_perform_inuse_fcf_recovery(phba, acqe_fip);
4185                 break;
4186         case LPFC_FIP_EVENT_TYPE_CVL:
4187                 phba->fcoe_cvl_eventtag = acqe_fip->event_tag;
4188                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4189                         "2718 Clear Virtual Link Received for VPI 0x%x"
4190                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
4191
4192                 vport = lpfc_find_vport_by_vpid(phba,
4193                                                 acqe_fip->index);
4194                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
4195                 if (!ndlp)
4196                         break;
4197                 active_vlink_present = 0;
4198
4199                 vports = lpfc_create_vport_work_array(phba);
4200                 if (vports) {
4201                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
4202                                         i++) {
4203                                 if ((!(vports[i]->fc_flag &
4204                                         FC_VPORT_CVL_RCVD)) &&
4205                                         (vports[i]->port_state > LPFC_FDISC)) {
4206                                         active_vlink_present = 1;
4207                                         break;
4208                                 }
4209                         }
4210                         lpfc_destroy_vport_work_array(phba, vports);
4211                 }
4212
4213                 if (active_vlink_present) {
4214                         /*
4215                          * If there are other active VLinks present,
4216                          * re-instantiate the Vlink using FDISC.
4217                          */
4218                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
4219                         shost = lpfc_shost_from_vport(vport);
4220                         spin_lock_irq(shost->host_lock);
4221                         ndlp->nlp_flag |= NLP_DELAY_TMO;
4222                         spin_unlock_irq(shost->host_lock);
4223                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
4224                         vport->port_state = LPFC_FDISC;
4225                 } else {
4226                         /*
4227                          * Otherwise, we request port to rediscover
4228                          * the entire FCF table for a fast recovery
4229                          * from possible case that the current FCF
4230                          * is no longer valid if we are not already
4231                          * in the FCF failover process.
4232                          */
4233                         spin_lock_irq(&phba->hbalock);
4234                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
4235                                 spin_unlock_irq(&phba->hbalock);
4236                                 break;
4237                         }
4238                         /* Mark the fast failover process in progress */
4239                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
4240                         spin_unlock_irq(&phba->hbalock);
4241                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
4242                                         LOG_DISCOVERY,
4243                                         "2773 Start FCF failover per CVL, "
4244                                         "evt_tag:x%x\n", acqe_fip->event_tag);
4245                         rc = lpfc_sli4_redisc_fcf_table(phba);
4246                         if (rc) {
4247                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
4248                                                 LOG_DISCOVERY,
4249                                                 "2774 Issue FCF rediscover "
4250                                                 "mabilbox command failed, "
4251                                                 "through to CVL event\n");
4252                                 spin_lock_irq(&phba->hbalock);
4253                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
4254                                 spin_unlock_irq(&phba->hbalock);
4255                                 /*
4256                                  * Last resort will be re-try on the
4257                                  * the current registered FCF entry.
4258                                  */
4259                                 lpfc_retry_pport_discovery(phba);
4260                         } else
4261                                 /*
4262                                  * Reset FCF roundrobin bmask for new
4263                                  * discovery.
4264                                  */
4265                                 lpfc_sli4_clear_fcf_rr_bmask(phba);
4266                 }
4267                 break;
4268         default:
4269                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4270                         "0288 Unknown FCoE event type 0x%x event tag "
4271                         "0x%x\n", event_type, acqe_fip->event_tag);
4272                 break;
4273         }
4274 }
4275
4276 /**
4277  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
4278  * @phba: pointer to lpfc hba data structure.
4279  * @acqe_link: pointer to the async dcbx completion queue entry.
4280  *
4281  * This routine is to handle the SLI4 asynchronous dcbx event.
4282  **/
4283 static void
4284 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
4285                          struct lpfc_acqe_dcbx *acqe_dcbx)
4286 {
4287         phba->fc_eventTag = acqe_dcbx->event_tag;
4288         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4289                         "0290 The SLI4 DCBX asynchronous event is not "
4290                         "handled yet\n");
4291 }
4292
4293 /**
4294  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
4295  * @phba: pointer to lpfc hba data structure.
4296  * @acqe_link: pointer to the async grp5 completion queue entry.
4297  *
4298  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
4299  * is an asynchronous notified of a logical link speed change.  The Port
4300  * reports the logical link speed in units of 10Mbps.
4301  **/
4302 static void
4303 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
4304                          struct lpfc_acqe_grp5 *acqe_grp5)
4305 {
4306         uint16_t prev_ll_spd;
4307
4308         phba->fc_eventTag = acqe_grp5->event_tag;
4309         phba->fcoe_eventtag = acqe_grp5->event_tag;
4310         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
4311         phba->sli4_hba.link_state.logical_speed =
4312                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5)) * 10;
4313         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4314                         "2789 GRP5 Async Event: Updating logical link speed "
4315                         "from %dMbps to %dMbps\n", prev_ll_spd,
4316                         phba->sli4_hba.link_state.logical_speed);
4317 }
4318
4319 /**
4320  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
4321  * @phba: pointer to lpfc hba data structure.
4322  *
4323  * This routine is invoked by the worker thread to process all the pending
4324  * SLI4 asynchronous events.
4325  **/
4326 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
4327 {
4328         struct lpfc_cq_event *cq_event;
4329
4330         /* First, declare the async event has been handled */
4331         spin_lock_irq(&phba->hbalock);
4332         phba->hba_flag &= ~ASYNC_EVENT;
4333         spin_unlock_irq(&phba->hbalock);
4334         /* Now, handle all the async events */
4335         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
4336                 /* Get the first event from the head of the event queue */
4337                 spin_lock_irq(&phba->hbalock);
4338                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
4339                                  cq_event, struct lpfc_cq_event, list);
4340                 spin_unlock_irq(&phba->hbalock);
4341                 /* Process the asynchronous event */
4342                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
4343                 case LPFC_TRAILER_CODE_LINK:
4344                         lpfc_sli4_async_link_evt(phba,
4345                                                  &cq_event->cqe.acqe_link);
4346                         break;
4347                 case LPFC_TRAILER_CODE_FCOE:
4348                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
4349                         break;
4350                 case LPFC_TRAILER_CODE_DCBX:
4351                         lpfc_sli4_async_dcbx_evt(phba,
4352                                                  &cq_event->cqe.acqe_dcbx);
4353                         break;
4354                 case LPFC_TRAILER_CODE_GRP5:
4355                         lpfc_sli4_async_grp5_evt(phba,
4356                                                  &cq_event->cqe.acqe_grp5);
4357                         break;
4358                 case LPFC_TRAILER_CODE_FC:
4359                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
4360                         break;
4361                 case LPFC_TRAILER_CODE_SLI:
4362                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
4363                         break;
4364                 default:
4365                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4366                                         "1804 Invalid asynchrous event code: "
4367                                         "x%x\n", bf_get(lpfc_trailer_code,
4368                                         &cq_event->cqe.mcqe_cmpl));
4369                         break;
4370                 }
4371                 /* Free the completion event processed to the free pool */
4372                 lpfc_sli4_cq_event_release(phba, cq_event);
4373         }
4374 }
4375
4376 /**
4377  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
4378  * @phba: pointer to lpfc hba data structure.
4379  *
4380  * This routine is invoked by the worker thread to process FCF table
4381  * rediscovery pending completion event.
4382  **/
4383 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
4384 {
4385         int rc;
4386
4387         spin_lock_irq(&phba->hbalock);
4388         /* Clear FCF rediscovery timeout event */
4389         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
4390         /* Clear driver fast failover FCF record flag */
4391         phba->fcf.failover_rec.flag = 0;
4392         /* Set state for FCF fast failover */
4393         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
4394         spin_unlock_irq(&phba->hbalock);
4395
4396         /* Scan FCF table from the first entry to re-discover SAN */
4397         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
4398                         "2777 Start post-quiescent FCF table scan\n");
4399         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
4400         if (rc)
4401                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
4402                                 "2747 Issue FCF scan read FCF mailbox "
4403                                 "command failed 0x%x\n", rc);
4404 }
4405
4406 /**
4407  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
4408  * @phba: pointer to lpfc hba data structure.
4409  * @dev_grp: The HBA PCI-Device group number.
4410  *
4411  * This routine is invoked to set up the per HBA PCI-Device group function
4412  * API jump table entries.
4413  *
4414  * Return: 0 if success, otherwise -ENODEV
4415  **/
4416 int
4417 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4418 {
4419         int rc;
4420
4421         /* Set up lpfc PCI-device group */
4422         phba->pci_dev_grp = dev_grp;
4423
4424         /* The LPFC_PCI_DEV_OC uses SLI4 */
4425         if (dev_grp == LPFC_PCI_DEV_OC)
4426                 phba->sli_rev = LPFC_SLI_REV4;
4427
4428         /* Set up device INIT API function jump table */
4429         rc = lpfc_init_api_table_setup(phba, dev_grp);
4430         if (rc)
4431                 return -ENODEV;
4432         /* Set up SCSI API function jump table */
4433         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
4434         if (rc)
4435                 return -ENODEV;
4436         /* Set up SLI API function jump table */
4437         rc = lpfc_sli_api_table_setup(phba, dev_grp);
4438         if (rc)
4439                 return -ENODEV;
4440         /* Set up MBOX API function jump table */
4441         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
4442         if (rc)
4443                 return -ENODEV;
4444
4445         return 0;
4446 }
4447
4448 /**
4449  * lpfc_log_intr_mode - Log the active interrupt mode
4450  * @phba: pointer to lpfc hba data structure.
4451  * @intr_mode: active interrupt mode adopted.
4452  *
4453  * This routine it invoked to log the currently used active interrupt mode
4454  * to the device.
4455  **/
4456 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
4457 {
4458         switch (intr_mode) {
4459         case 0:
4460                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4461                                 "0470 Enable INTx interrupt mode.\n");
4462                 break;
4463         case 1:
4464                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4465                                 "0481 Enabled MSI interrupt mode.\n");
4466                 break;
4467         case 2:
4468                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4469                                 "0480 Enabled MSI-X interrupt mode.\n");
4470                 break;
4471         default:
4472                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4473                                 "0482 Illegal interrupt mode.\n");
4474                 break;
4475         }
4476         return;
4477 }
4478
4479 /**
4480  * lpfc_enable_pci_dev - Enable a generic PCI device.
4481  * @phba: pointer to lpfc hba data structure.
4482  *
4483  * This routine is invoked to enable the PCI device that is common to all
4484  * PCI devices.
4485  *
4486  * Return codes
4487  *      0 - successful
4488  *      other values - error
4489  **/
4490 static int
4491 lpfc_enable_pci_dev(struct lpfc_hba *phba)
4492 {
4493         struct pci_dev *pdev;
4494         int bars = 0;
4495
4496         /* Obtain PCI device reference */
4497         if (!phba->pcidev)
4498                 goto out_error;
4499         else
4500                 pdev = phba->pcidev;
4501         /* Select PCI BARs */
4502         bars = pci_select_bars(pdev, IORESOURCE_MEM);
4503         /* Enable PCI device */
4504         if (pci_enable_device_mem(pdev))
4505                 goto out_error;
4506         /* Request PCI resource for the device */
4507         if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
4508                 goto out_disable_device;
4509         /* Set up device as PCI master and save state for EEH */
4510         pci_set_master(pdev);
4511         pci_try_set_mwi(pdev);
4512         pci_save_state(pdev);
4513
4514         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
4515         if (pci_find_capability(pdev, PCI_CAP_ID_EXP))
4516                 pdev->needs_freset = 1;
4517
4518         return 0;
4519
4520 out_disable_device:
4521         pci_disable_device(pdev);
4522 out_error:
4523         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4524                         "1401 Failed to enable pci device, bars:x%x\n", bars);
4525         return -ENODEV;
4526 }
4527
4528 /**
4529  * lpfc_disable_pci_dev - Disable a generic PCI device.
4530  * @phba: pointer to lpfc hba data structure.
4531  *
4532  * This routine is invoked to disable the PCI device that is common to all
4533  * PCI devices.
4534  **/
4535 static void
4536 lpfc_disable_pci_dev(struct lpfc_hba *phba)
4537 {
4538         struct pci_dev *pdev;
4539         int bars;
4540
4541         /* Obtain PCI device reference */
4542         if (!phba->pcidev)
4543                 return;
4544         else
4545                 pdev = phba->pcidev;
4546         /* Select PCI BARs */
4547         bars = pci_select_bars(pdev, IORESOURCE_MEM);
4548         /* Release PCI resource and disable PCI device */
4549         pci_release_selected_regions(pdev, bars);
4550         pci_disable_device(pdev);
4551         /* Null out PCI private reference to driver */
4552         pci_set_drvdata(pdev, NULL);
4553
4554         return;
4555 }
4556
4557 /**
4558  * lpfc_reset_hba - Reset a hba
4559  * @phba: pointer to lpfc hba data structure.
4560  *
4561  * This routine is invoked to reset a hba device. It brings the HBA
4562  * offline, performs a board restart, and then brings the board back
4563  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
4564  * on outstanding mailbox commands.
4565  **/
4566 void
4567 lpfc_reset_hba(struct lpfc_hba *phba)
4568 {
4569         /* If resets are disabled then set error state and return. */
4570         if (!phba->cfg_enable_hba_reset) {
4571                 phba->link_state = LPFC_HBA_ERROR;
4572                 return;
4573         }
4574         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
4575         lpfc_offline(phba);
4576         lpfc_sli_brdrestart(phba);
4577         lpfc_online(phba);
4578         lpfc_unblock_mgmt_io(phba);
4579 }
4580
4581 /**
4582  * lpfc_sli_sriov_nr_virtfn_get - Get the number of sr-iov virtual functions
4583  * @phba: pointer to lpfc hba data structure.
4584  *
4585  * This function enables the PCI SR-IOV virtual functions to a physical
4586  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4587  * enable the number of virtual functions to the physical function. As
4588  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4589  * API call does not considered as an error condition for most of the device.
4590  **/
4591 uint16_t
4592 lpfc_sli_sriov_nr_virtfn_get(struct lpfc_hba *phba)
4593 {
4594         struct pci_dev *pdev = phba->pcidev;
4595         uint16_t nr_virtfn;
4596         int pos;
4597
4598         pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV);
4599         if (pos == 0)
4600                 return 0;
4601
4602         pci_read_config_word(pdev, pos + PCI_SRIOV_TOTAL_VF, &nr_virtfn);
4603         return nr_virtfn;
4604 }
4605
4606 /**
4607  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
4608  * @phba: pointer to lpfc hba data structure.
4609  * @nr_vfn: number of virtual functions to be enabled.
4610  *
4611  * This function enables the PCI SR-IOV virtual functions to a physical
4612  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4613  * enable the number of virtual functions to the physical function. As
4614  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4615  * API call does not considered as an error condition for most of the device.
4616  **/
4617 int
4618 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
4619 {
4620         struct pci_dev *pdev = phba->pcidev;
4621         uint16_t max_nr_vfn;
4622         int rc;
4623
4624         max_nr_vfn = lpfc_sli_sriov_nr_virtfn_get(phba);
4625         if (nr_vfn > max_nr_vfn) {
4626                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4627                                 "3057 Requested vfs (%d) greater than "
4628                                 "supported vfs (%d)", nr_vfn, max_nr_vfn);
4629                 return -EINVAL;
4630         }
4631
4632         rc = pci_enable_sriov(pdev, nr_vfn);
4633         if (rc) {
4634                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4635                                 "2806 Failed to enable sriov on this device "
4636                                 "with vfn number nr_vf:%d, rc:%d\n",
4637                                 nr_vfn, rc);
4638         } else
4639                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4640                                 "2807 Successful enable sriov on this device "
4641                                 "with vfn number nr_vf:%d\n", nr_vfn);
4642         return rc;
4643 }
4644
4645 /**
4646  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
4647  * @phba: pointer to lpfc hba data structure.
4648  *
4649  * This routine is invoked to set up the driver internal resources specific to
4650  * support the SLI-3 HBA device it attached to.
4651  *
4652  * Return codes
4653  *      0 - successful
4654  *      other values - error
4655  **/
4656 static int
4657 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
4658 {
4659         struct lpfc_sli *psli;
4660         int rc;
4661
4662         /*
4663          * Initialize timers used by driver
4664          */
4665
4666         /* Heartbeat timer */
4667         init_timer(&phba->hb_tmofunc);
4668         phba->hb_tmofunc.function = lpfc_hb_timeout;
4669         phba->hb_tmofunc.data = (unsigned long)phba;
4670
4671         psli = &phba->sli;
4672         /* MBOX heartbeat timer */
4673         init_timer(&psli->mbox_tmo);
4674         psli->mbox_tmo.function = lpfc_mbox_timeout;
4675         psli->mbox_tmo.data = (unsigned long) phba;
4676         /* FCP polling mode timer */
4677         init_timer(&phba->fcp_poll_timer);
4678         phba->fcp_poll_timer.function = lpfc_poll_timeout;
4679         phba->fcp_poll_timer.data = (unsigned long) phba;
4680         /* Fabric block timer */
4681         init_timer(&phba->fabric_block_timer);
4682         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4683         phba->fabric_block_timer.data = (unsigned long) phba;
4684         /* EA polling mode timer */
4685         init_timer(&phba->eratt_poll);
4686         phba->eratt_poll.function = lpfc_poll_eratt;
4687         phba->eratt_poll.data = (unsigned long) phba;
4688
4689         /* Host attention work mask setup */
4690         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
4691         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
4692
4693         /* Get all the module params for configuring this host */
4694         lpfc_get_cfgparam(phba);
4695         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
4696                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
4697                 /* check for menlo minimum sg count */
4698                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
4699                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
4700         }
4701
4702         if (!phba->sli.ring)
4703                 phba->sli.ring = (struct lpfc_sli_ring *)
4704                         kzalloc(LPFC_SLI3_MAX_RING *
4705                         sizeof(struct lpfc_sli_ring), GFP_KERNEL);
4706         if (!phba->sli.ring)
4707                 return -ENOMEM;
4708
4709         /*
4710          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4711          * used to create the sg_dma_buf_pool must be dynamically calculated.
4712          * 2 segments are added since the IOCB needs a command and response bde.
4713          */
4714         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
4715                 sizeof(struct fcp_rsp) +
4716                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
4717
4718         if (phba->cfg_enable_bg) {
4719                 phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
4720                 phba->cfg_sg_dma_buf_size +=
4721                         phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
4722         }
4723
4724         /* Also reinitialize the host templates with new values. */
4725         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4726         lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4727
4728         phba->max_vpi = LPFC_MAX_VPI;
4729         /* This will be set to correct value after config_port mbox */
4730         phba->max_vports = 0;
4731
4732         /*
4733          * Initialize the SLI Layer to run with lpfc HBAs.
4734          */
4735         lpfc_sli_setup(phba);
4736         lpfc_sli_queue_setup(phba);
4737
4738         /* Allocate device driver memory */
4739         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
4740                 return -ENOMEM;
4741
4742         /*
4743          * Enable sr-iov virtual functions if supported and configured
4744          * through the module parameter.
4745          */
4746         if (phba->cfg_sriov_nr_virtfn > 0) {
4747                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4748                                                  phba->cfg_sriov_nr_virtfn);
4749                 if (rc) {
4750                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4751                                         "2808 Requested number of SR-IOV "
4752                                         "virtual functions (%d) is not "
4753                                         "supported\n",
4754                                         phba->cfg_sriov_nr_virtfn);
4755                         phba->cfg_sriov_nr_virtfn = 0;
4756                 }
4757         }
4758
4759         return 0;
4760 }
4761
4762 /**
4763  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
4764  * @phba: pointer to lpfc hba data structure.
4765  *
4766  * This routine is invoked to unset the driver internal resources set up
4767  * specific for supporting the SLI-3 HBA device it attached to.
4768  **/
4769 static void
4770 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
4771 {
4772         /* Free device driver memory allocated */
4773         lpfc_mem_free_all(phba);
4774
4775         return;
4776 }
4777
4778 /**
4779  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
4780  * @phba: pointer to lpfc hba data structure.
4781  *
4782  * This routine is invoked to set up the driver internal resources specific to
4783  * support the SLI-4 HBA device it attached to.
4784  *
4785  * Return codes
4786  *      0 - successful
4787  *      other values - error
4788  **/
4789 static int
4790 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
4791 {
4792         struct lpfc_sli *psli;
4793         LPFC_MBOXQ_t *mboxq;
4794         int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
4795         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
4796         struct lpfc_mqe *mqe;
4797         int longs, sli_family;
4798         int sges_per_segment;
4799
4800         /* Before proceed, wait for POST done and device ready */
4801         rc = lpfc_sli4_post_status_check(phba);
4802         if (rc)
4803                 return -ENODEV;
4804
4805         /*
4806          * Initialize timers used by driver
4807          */
4808
4809         /* Heartbeat timer */
4810         init_timer(&phba->hb_tmofunc);
4811         phba->hb_tmofunc.function = lpfc_hb_timeout;
4812         phba->hb_tmofunc.data = (unsigned long)phba;
4813         init_timer(&phba->rrq_tmr);
4814         phba->rrq_tmr.function = lpfc_rrq_timeout;
4815         phba->rrq_tmr.data = (unsigned long)phba;
4816
4817         psli = &phba->sli;
4818         /* MBOX heartbeat timer */
4819         init_timer(&psli->mbox_tmo);
4820         psli->mbox_tmo.function = lpfc_mbox_timeout;
4821         psli->mbox_tmo.data = (unsigned long) phba;
4822         /* Fabric block timer */
4823         init_timer(&phba->fabric_block_timer);
4824         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4825         phba->fabric_block_timer.data = (unsigned long) phba;
4826         /* EA polling mode timer */
4827         init_timer(&phba->eratt_poll);
4828         phba->eratt_poll.function = lpfc_poll_eratt;
4829         phba->eratt_poll.data = (unsigned long) phba;
4830         /* FCF rediscover timer */
4831         init_timer(&phba->fcf.redisc_wait);
4832         phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
4833         phba->fcf.redisc_wait.data = (unsigned long)phba;
4834
4835         /*
4836          * Control structure for handling external multi-buffer mailbox
4837          * command pass-through.
4838          */
4839         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
4840                 sizeof(struct lpfc_mbox_ext_buf_ctx));
4841         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4842
4843         /*
4844          * We need to do a READ_CONFIG mailbox command here before
4845          * calling lpfc_get_cfgparam. For VFs this will report the
4846          * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings.
4847          * All of the resources allocated
4848          * for this Port are tied to these values.
4849          */
4850         /* Get all the module params for configuring this host */
4851         lpfc_get_cfgparam(phba);
4852         phba->max_vpi = LPFC_MAX_VPI;
4853
4854         /* Eventually cfg_fcp_eq_count / cfg_fcp_wq_count will be depricated */
4855         phba->cfg_fcp_io_channel = phba->cfg_fcp_eq_count;
4856
4857         /* This will be set to correct value after the read_config mbox */
4858         phba->max_vports = 0;
4859
4860         /* Program the default value of vlan_id and fc_map */
4861         phba->valid_vlan = 0;
4862         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4863         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4864         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4865
4866         /* With BlockGuard we can have multiple SGEs per Data Segemnt */
4867         sges_per_segment = 1;
4868         if (phba->cfg_enable_bg)
4869                 sges_per_segment = 2;
4870
4871         /*
4872          * For SLI4, instead of using ring 0 (LPFC_FCP_RING) for FCP commands
4873          * we will associate a new ring, for each FCP fastpath EQ/CQ/WQ tuple.
4874          */
4875         if (!phba->sli.ring)
4876                 phba->sli.ring = kzalloc(
4877                         (LPFC_SLI3_MAX_RING + phba->cfg_fcp_io_channel) *
4878                         sizeof(struct lpfc_sli_ring), GFP_KERNEL);
4879         if (!phba->sli.ring)
4880                 return -ENOMEM;
4881         /*
4882          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4883          * used to create the sg_dma_buf_pool must be dynamically calculated.
4884          * 2 segments are added since the IOCB needs a command and response bde.
4885          * To insure that the scsi sgl does not cross a 4k page boundary only
4886          * sgl sizes of must be a power of 2.
4887          */
4888         buf_size = (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) +
4889                     (((phba->cfg_sg_seg_cnt * sges_per_segment) + 2) *
4890                     sizeof(struct sli4_sge)));
4891
4892         sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
4893         max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
4894         switch (sli_family) {
4895         case LPFC_SLI_INTF_FAMILY_BE2:
4896         case LPFC_SLI_INTF_FAMILY_BE3:
4897                 /* There is a single hint for BE - 2 pages per BPL. */
4898                 if (bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf) ==
4899                     LPFC_SLI_INTF_SLI_HINT1_1)
4900                         max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
4901                 break;
4902         case LPFC_SLI_INTF_FAMILY_LNCR_A0:
4903         case LPFC_SLI_INTF_FAMILY_LNCR_B0:
4904         default:
4905                 break;
4906         }
4907
4908         for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
4909              dma_buf_size < max_buf_size && buf_size > dma_buf_size;
4910              dma_buf_size = dma_buf_size << 1)
4911                 ;
4912         if (dma_buf_size == max_buf_size)
4913                 phba->cfg_sg_seg_cnt = (dma_buf_size -
4914                         sizeof(struct fcp_cmnd) - sizeof(struct fcp_rsp) -
4915                         (2 * sizeof(struct sli4_sge))) /
4916                                 sizeof(struct sli4_sge);
4917         phba->cfg_sg_dma_buf_size = dma_buf_size;
4918
4919         /* Initialize buffer queue management fields */
4920         hbq_count = lpfc_sli_hbq_count();
4921         for (i = 0; i < hbq_count; ++i)
4922                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
4923         INIT_LIST_HEAD(&phba->rb_pend_list);
4924         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
4925         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
4926
4927         /*
4928          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
4929          */
4930         /* Initialize the Abort scsi buffer list used by driver */
4931         spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
4932         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
4933         /* This abort list used by worker thread */
4934         spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
4935
4936         /*
4937          * Initialize driver internal slow-path work queues
4938          */
4939
4940         /* Driver internel slow-path CQ Event pool */
4941         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
4942         /* Response IOCB work queue list */
4943         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
4944         /* Asynchronous event CQ Event work queue list */
4945         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
4946         /* Fast-path XRI aborted CQ Event work queue list */
4947         INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
4948         /* Slow-path XRI aborted CQ Event work queue list */
4949         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
4950         /* Receive queue CQ Event work queue list */
4951         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
4952
4953         /* Initialize extent block lists. */
4954         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
4955         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
4956         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
4957         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
4958
4959         /* Initialize the driver internal SLI layer lists. */
4960         lpfc_sli_setup(phba);
4961         lpfc_sli_queue_setup(phba);
4962
4963         /* Allocate device driver memory */
4964         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
4965         if (rc)
4966                 return -ENOMEM;
4967
4968         /* IF Type 2 ports get initialized now. */
4969         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4970             LPFC_SLI_INTF_IF_TYPE_2) {
4971                 rc = lpfc_pci_function_reset(phba);
4972                 if (unlikely(rc))
4973                         return -ENODEV;
4974         }
4975
4976         /* Create the bootstrap mailbox command */
4977         rc = lpfc_create_bootstrap_mbox(phba);
4978         if (unlikely(rc))
4979                 goto out_free_mem;
4980
4981         /* Set up the host's endian order with the device. */
4982         rc = lpfc_setup_endian_order(phba);
4983         if (unlikely(rc))
4984                 goto out_free_bsmbx;
4985
4986         /* Set up the hba's configuration parameters. */
4987         rc = lpfc_sli4_read_config(phba);
4988         if (unlikely(rc))
4989                 goto out_free_bsmbx;
4990
4991         /* IF Type 0 ports get initialized now. */
4992         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4993             LPFC_SLI_INTF_IF_TYPE_0) {
4994                 rc = lpfc_pci_function_reset(phba);
4995                 if (unlikely(rc))
4996                         goto out_free_bsmbx;
4997         }
4998
4999         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
5000                                                        GFP_KERNEL);
5001         if (!mboxq) {
5002                 rc = -ENOMEM;
5003                 goto out_free_bsmbx;
5004         }
5005
5006         /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
5007         lpfc_supported_pages(mboxq);
5008         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5009         if (!rc) {
5010                 mqe = &mboxq->u.mqe;
5011                 memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
5012                        LPFC_MAX_SUPPORTED_PAGES);
5013                 for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
5014                         switch (pn_page[i]) {
5015                         case LPFC_SLI4_PARAMETERS:
5016                                 phba->sli4_hba.pc_sli4_params.supported = 1;
5017                                 break;
5018                         default:
5019                                 break;
5020                         }
5021                 }
5022                 /* Read the port's SLI4 Parameters capabilities if supported. */
5023                 if (phba->sli4_hba.pc_sli4_params.supported)
5024                         rc = lpfc_pc_sli4_params_get(phba, mboxq);
5025                 if (rc) {
5026                         mempool_free(mboxq, phba->mbox_mem_pool);
5027                         rc = -EIO;
5028                         goto out_free_bsmbx;
5029                 }
5030         }
5031         /*
5032          * Get sli4 parameters that override parameters from Port capabilities.
5033          * If this call fails, it isn't critical unless the SLI4 parameters come
5034          * back in conflict.
5035          */
5036         rc = lpfc_get_sli4_parameters(phba, mboxq);
5037         if (rc) {
5038                 if (phba->sli4_hba.extents_in_use &&
5039                     phba->sli4_hba.rpi_hdrs_in_use) {
5040                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5041                                 "2999 Unsupported SLI4 Parameters "
5042                                 "Extents and RPI headers enabled.\n");
5043                         goto out_free_bsmbx;
5044                 }
5045         }
5046         mempool_free(mboxq, phba->mbox_mem_pool);
5047         /* Verify all the SLI4 queues */
5048         rc = lpfc_sli4_queue_verify(phba);
5049         if (rc)
5050                 goto out_free_bsmbx;
5051
5052         /* Create driver internal CQE event pool */
5053         rc = lpfc_sli4_cq_event_pool_create(phba);
5054         if (rc)
5055                 goto out_free_bsmbx;
5056
5057         /* Initialize sgl lists per host */
5058         lpfc_init_sgl_list(phba);
5059
5060         /* Allocate and initialize active sgl array */
5061         rc = lpfc_init_active_sgl_array(phba);
5062         if (rc) {
5063                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5064                                 "1430 Failed to initialize sgl list.\n");
5065                 goto out_destroy_cq_event_pool;
5066         }
5067         rc = lpfc_sli4_init_rpi_hdrs(phba);
5068         if (rc) {
5069                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5070                                 "1432 Failed to initialize rpi headers.\n");
5071                 goto out_free_active_sgl;
5072         }
5073
5074         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
5075         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
5076         phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
5077                                          GFP_KERNEL);
5078         if (!phba->fcf.fcf_rr_bmask) {
5079                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5080                                 "2759 Failed allocate memory for FCF round "
5081                                 "robin failover bmask\n");
5082                 rc = -ENOMEM;
5083                 goto out_remove_rpi_hdrs;
5084         }
5085
5086         phba->sli4_hba.fcp_eq_hdl =
5087                         kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
5088                             phba->cfg_fcp_io_channel), GFP_KERNEL);
5089         if (!phba->sli4_hba.fcp_eq_hdl) {
5090                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5091                                 "2572 Failed allocate memory for "
5092                                 "fast-path per-EQ handle array\n");
5093                 rc = -ENOMEM;
5094                 goto out_free_fcf_rr_bmask;
5095         }
5096
5097         phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
5098                                       phba->cfg_fcp_io_channel), GFP_KERNEL);
5099         if (!phba->sli4_hba.msix_entries) {
5100                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5101                                 "2573 Failed allocate memory for msi-x "
5102                                 "interrupt vector entries\n");
5103                 rc = -ENOMEM;
5104                 goto out_free_fcp_eq_hdl;
5105         }
5106
5107         /*
5108          * Enable sr-iov virtual functions if supported and configured
5109          * through the module parameter.
5110          */
5111         if (phba->cfg_sriov_nr_virtfn > 0) {
5112                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
5113                                                  phba->cfg_sriov_nr_virtfn);
5114                 if (rc) {
5115                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
5116                                         "3020 Requested number of SR-IOV "
5117                                         "virtual functions (%d) is not "
5118                                         "supported\n",
5119                                         phba->cfg_sriov_nr_virtfn);
5120                         phba->cfg_sriov_nr_virtfn = 0;
5121                 }
5122         }
5123
5124         return 0;
5125
5126 out_free_fcp_eq_hdl:
5127         kfree(phba->sli4_hba.fcp_eq_hdl);
5128 out_free_fcf_rr_bmask:
5129         kfree(phba->fcf.fcf_rr_bmask);
5130 out_remove_rpi_hdrs:
5131         lpfc_sli4_remove_rpi_hdrs(phba);
5132 out_free_active_sgl:
5133         lpfc_free_active_sgl(phba);
5134 out_destroy_cq_event_pool:
5135         lpfc_sli4_cq_event_pool_destroy(phba);
5136 out_free_bsmbx:
5137         lpfc_destroy_bootstrap_mbox(phba);
5138 out_free_mem:
5139         lpfc_mem_free(phba);
5140         return rc;
5141 }
5142
5143 /**
5144  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
5145  * @phba: pointer to lpfc hba data structure.
5146  *
5147  * This routine is invoked to unset the driver internal resources set up
5148  * specific for supporting the SLI-4 HBA device it attached to.
5149  **/
5150 static void
5151 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
5152 {
5153         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
5154
5155         /* Free memory allocated for msi-x interrupt vector entries */
5156         kfree(phba->sli4_hba.msix_entries);
5157
5158         /* Free memory allocated for fast-path work queue handles */
5159         kfree(phba->sli4_hba.fcp_eq_hdl);
5160
5161         /* Free the allocated rpi headers. */
5162         lpfc_sli4_remove_rpi_hdrs(phba);
5163         lpfc_sli4_remove_rpis(phba);
5164
5165         /* Free eligible FCF index bmask */
5166         kfree(phba->fcf.fcf_rr_bmask);
5167
5168         /* Free the ELS sgl list */
5169         lpfc_free_active_sgl(phba);
5170         lpfc_free_els_sgl_list(phba);
5171
5172         /* Free the completion queue EQ event pool */
5173         lpfc_sli4_cq_event_release_all(phba);
5174         lpfc_sli4_cq_event_pool_destroy(phba);
5175
5176         /* Release resource identifiers. */
5177         lpfc_sli4_dealloc_resource_identifiers(phba);
5178
5179         /* Free the bsmbx region. */
5180         lpfc_destroy_bootstrap_mbox(phba);
5181
5182         /* Free the SLI Layer memory with SLI4 HBAs */
5183         lpfc_mem_free_all(phba);
5184
5185         /* Free the current connect table */
5186         list_for_each_entry_safe(conn_entry, next_conn_entry,
5187                 &phba->fcf_conn_rec_list, list) {
5188                 list_del_init(&conn_entry->list);
5189                 kfree(conn_entry);
5190         }
5191
5192         return;
5193 }
5194
5195 /**
5196  * lpfc_init_api_table_setup - Set up init api function jump table
5197  * @phba: The hba struct for which this call is being executed.
5198  * @dev_grp: The HBA PCI-Device group number.
5199  *
5200  * This routine sets up the device INIT interface API function jump table
5201  * in @phba struct.
5202  *
5203  * Returns: 0 - success, -ENODEV - failure.
5204  **/
5205 int
5206 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
5207 {
5208         phba->lpfc_hba_init_link = lpfc_hba_init_link;
5209         phba->lpfc_hba_down_link = lpfc_hba_down_link;
5210         phba->lpfc_selective_reset = lpfc_selective_reset;
5211         switch (dev_grp) {
5212         case LPFC_PCI_DEV_LP:
5213                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
5214                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
5215                 phba->lpfc_stop_port = lpfc_stop_port_s3;
5216                 break;
5217         case LPFC_PCI_DEV_OC:
5218                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
5219                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
5220                 phba->lpfc_stop_port = lpfc_stop_port_s4;
5221                 break;
5222         default:
5223                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5224                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
5225                                 dev_grp);
5226                 return -ENODEV;
5227                 break;
5228         }
5229         return 0;
5230 }
5231
5232 /**
5233  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
5234  * @phba: pointer to lpfc hba data structure.
5235  *
5236  * This routine is invoked to set up the driver internal resources before the
5237  * device specific resource setup to support the HBA device it attached to.
5238  *
5239  * Return codes
5240  *      0 - successful
5241  *      other values - error
5242  **/
5243 static int
5244 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
5245 {
5246         /*
5247          * Driver resources common to all SLI revisions
5248          */
5249         atomic_set(&phba->fast_event_count, 0);
5250         spin_lock_init(&phba->hbalock);
5251
5252         /* Initialize ndlp management spinlock */
5253         spin_lock_init(&phba->ndlp_lock);
5254
5255         INIT_LIST_HEAD(&phba->port_list);
5256         INIT_LIST_HEAD(&phba->work_list);
5257         init_waitqueue_head(&phba->wait_4_mlo_m_q);
5258
5259         /* Initialize the wait queue head for the kernel thread */
5260         init_waitqueue_head(&phba->work_waitq);
5261
5262         /* Initialize the scsi buffer list used by driver for scsi IO */
5263         spin_lock_init(&phba->scsi_buf_list_lock);
5264         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
5265
5266         /* Initialize the fabric iocb list */
5267         INIT_LIST_HEAD(&phba->fabric_iocb_list);
5268
5269         /* Initialize list to save ELS buffers */
5270         INIT_LIST_HEAD(&phba->elsbuf);
5271
5272         /* Initialize FCF connection rec list */
5273         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
5274
5275         return 0;
5276 }
5277
5278 /**
5279  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
5280  * @phba: pointer to lpfc hba data structure.
5281  *
5282  * This routine is invoked to set up the driver internal resources after the
5283  * device specific resource setup to support the HBA device it attached to.
5284  *
5285  * Return codes
5286  *      0 - successful
5287  *      other values - error
5288  **/
5289 static int
5290 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
5291 {
5292         int error;
5293
5294         /* Startup the kernel thread for this host adapter. */
5295         phba->worker_thread = kthread_run(lpfc_do_work, phba,
5296                                           "lpfc_worker_%d", phba->brd_no);
5297         if (IS_ERR(phba->worker_thread)) {
5298                 error = PTR_ERR(phba->worker_thread);
5299                 return error;
5300         }
5301
5302         return 0;
5303 }
5304
5305 /**
5306  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
5307  * @phba: pointer to lpfc hba data structure.
5308  *
5309  * This routine is invoked to unset the driver internal resources set up after
5310  * the device specific resource setup for supporting the HBA device it
5311  * attached to.
5312  **/
5313 static void
5314 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
5315 {
5316         /* Stop kernel worker thread */
5317         kthread_stop(phba->worker_thread);
5318 }
5319
5320 /**
5321  * lpfc_free_iocb_list - Free iocb list.
5322  * @phba: pointer to lpfc hba data structure.
5323  *
5324  * This routine is invoked to free the driver's IOCB list and memory.
5325  **/
5326 static void
5327 lpfc_free_iocb_list(struct lpfc_hba *phba)
5328 {
5329         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
5330
5331         spin_lock_irq(&phba->hbalock);
5332         list_for_each_entry_safe(iocbq_entry, iocbq_next,
5333                                  &phba->lpfc_iocb_list, list) {
5334                 list_del(&iocbq_entry->list);
5335                 kfree(iocbq_entry);
5336                 phba->total_iocbq_bufs--;
5337         }
5338         spin_unlock_irq(&phba->hbalock);
5339
5340         return;
5341 }
5342
5343 /**
5344  * lpfc_init_iocb_list - Allocate and initialize iocb list.
5345  * @phba: pointer to lpfc hba data structure.
5346  *
5347  * This routine is invoked to allocate and initizlize the driver's IOCB
5348  * list and set up the IOCB tag array accordingly.
5349  *
5350  * Return codes
5351  *      0 - successful
5352  *      other values - error
5353  **/
5354 static int
5355 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
5356 {
5357         struct lpfc_iocbq *iocbq_entry = NULL;
5358         uint16_t iotag;
5359         int i;
5360
5361         /* Initialize and populate the iocb list per host.  */
5362         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
5363         for (i = 0; i < iocb_count; i++) {
5364                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
5365                 if (iocbq_entry == NULL) {
5366                         printk(KERN_ERR "%s: only allocated %d iocbs of "
5367                                 "expected %d count. Unloading driver.\n",
5368                                 __func__, i, LPFC_IOCB_LIST_CNT);
5369                         goto out_free_iocbq;
5370                 }
5371
5372                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
5373                 if (iotag == 0) {
5374                         kfree(iocbq_entry);
5375                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
5376                                 "Unloading driver.\n", __func__);
5377                         goto out_free_iocbq;
5378                 }
5379                 iocbq_entry->sli4_lxritag = NO_XRI;
5380                 iocbq_entry->sli4_xritag = NO_XRI;
5381
5382                 spin_lock_irq(&phba->hbalock);
5383                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
5384                 phba->total_iocbq_bufs++;
5385                 spin_unlock_irq(&phba->hbalock);
5386         }
5387
5388         return 0;
5389
5390 out_free_iocbq:
5391         lpfc_free_iocb_list(phba);
5392
5393         return -ENOMEM;
5394 }
5395
5396 /**
5397  * lpfc_free_sgl_list - Free a given sgl list.
5398  * @phba: pointer to lpfc hba data structure.
5399  * @sglq_list: pointer to the head of sgl list.
5400  *
5401  * This routine is invoked to free a give sgl list and memory.
5402  **/
5403 void
5404 lpfc_free_sgl_list(struct lpfc_hba *phba, struct list_head *sglq_list)
5405 {
5406         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
5407
5408         list_for_each_entry_safe(sglq_entry, sglq_next, sglq_list, list) {
5409                 list_del(&sglq_entry->list);
5410                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
5411                 kfree(sglq_entry);
5412         }
5413 }
5414
5415 /**
5416  * lpfc_free_els_sgl_list - Free els sgl list.
5417  * @phba: pointer to lpfc hba data structure.
5418  *
5419  * This routine is invoked to free the driver's els sgl list and memory.
5420  **/
5421 static void
5422 lpfc_free_els_sgl_list(struct lpfc_hba *phba)
5423 {
5424         LIST_HEAD(sglq_list);
5425
5426         /* Retrieve all els sgls from driver list */
5427         spin_lock_irq(&phba->hbalock);
5428         list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
5429         spin_unlock_irq(&phba->hbalock);
5430
5431         /* Now free the sgl list */
5432         lpfc_free_sgl_list(phba, &sglq_list);
5433 }
5434
5435 /**
5436  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
5437  * @phba: pointer to lpfc hba data structure.
5438  *
5439  * This routine is invoked to allocate the driver's active sgl memory.
5440  * This array will hold the sglq_entry's for active IOs.
5441  **/
5442 static int
5443 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
5444 {
5445         int size;
5446         size = sizeof(struct lpfc_sglq *);
5447         size *= phba->sli4_hba.max_cfg_param.max_xri;
5448
5449         phba->sli4_hba.lpfc_sglq_active_list =
5450                 kzalloc(size, GFP_KERNEL);
5451         if (!phba->sli4_hba.lpfc_sglq_active_list)
5452                 return -ENOMEM;
5453         return 0;
5454 }
5455
5456 /**
5457  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
5458  * @phba: pointer to lpfc hba data structure.
5459  *
5460  * This routine is invoked to walk through the array of active sglq entries
5461  * and free all of the resources.
5462  * This is just a place holder for now.
5463  **/
5464 static void
5465 lpfc_free_active_sgl(struct lpfc_hba *phba)
5466 {
5467         kfree(phba->sli4_hba.lpfc_sglq_active_list);
5468 }
5469
5470 /**
5471  * lpfc_init_sgl_list - Allocate and initialize sgl list.
5472  * @phba: pointer to lpfc hba data structure.
5473  *
5474  * This routine is invoked to allocate and initizlize the driver's sgl
5475  * list and set up the sgl xritag tag array accordingly.
5476  *
5477  **/
5478 static void
5479 lpfc_init_sgl_list(struct lpfc_hba *phba)
5480 {
5481         /* Initialize and populate the sglq list per host/VF. */
5482         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
5483         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
5484
5485         /* els xri-sgl book keeping */
5486         phba->sli4_hba.els_xri_cnt = 0;
5487
5488         /* scsi xri-buffer book keeping */
5489         phba->sli4_hba.scsi_xri_cnt = 0;
5490 }
5491
5492 /**
5493  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
5494  * @phba: pointer to lpfc hba data structure.
5495  *
5496  * This routine is invoked to post rpi header templates to the
5497  * port for those SLI4 ports that do not support extents.  This routine
5498  * posts a PAGE_SIZE memory region to the port to hold up to
5499  * PAGE_SIZE modulo 64 rpi context headers.  This is an initialization routine
5500  * and should be called only when interrupts are disabled.
5501  *
5502  * Return codes
5503  *      0 - successful
5504  *      -ERROR - otherwise.
5505  **/
5506 int
5507 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
5508 {
5509         int rc = 0;
5510         struct lpfc_rpi_hdr *rpi_hdr;
5511
5512         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
5513         if (!phba->sli4_hba.rpi_hdrs_in_use)
5514                 return rc;
5515         if (phba->sli4_hba.extents_in_use)
5516                 return -EIO;
5517
5518         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
5519         if (!rpi_hdr) {
5520                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5521                                 "0391 Error during rpi post operation\n");
5522                 lpfc_sli4_remove_rpis(phba);
5523                 rc = -ENODEV;
5524         }
5525
5526         return rc;
5527 }
5528
5529 /**
5530  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
5531  * @phba: pointer to lpfc hba data structure.
5532  *
5533  * This routine is invoked to allocate a single 4KB memory region to
5534  * support rpis and stores them in the phba.  This single region
5535  * provides support for up to 64 rpis.  The region is used globally
5536  * by the device.
5537  *
5538  * Returns:
5539  *   A valid rpi hdr on success.
5540  *   A NULL pointer on any failure.
5541  **/
5542 struct lpfc_rpi_hdr *
5543 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
5544 {
5545         uint16_t rpi_limit, curr_rpi_range;
5546         struct lpfc_dmabuf *dmabuf;
5547         struct lpfc_rpi_hdr *rpi_hdr;
5548         uint32_t rpi_count;
5549
5550         /*
5551          * If the SLI4 port supports extents, posting the rpi header isn't
5552          * required.  Set the expected maximum count and let the actual value
5553          * get set when extents are fully allocated.
5554          */
5555         if (!phba->sli4_hba.rpi_hdrs_in_use)
5556                 return NULL;
5557         if (phba->sli4_hba.extents_in_use)
5558                 return NULL;
5559
5560         /* The limit on the logical index is just the max_rpi count. */
5561         rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
5562         phba->sli4_hba.max_cfg_param.max_rpi - 1;
5563
5564         spin_lock_irq(&phba->hbalock);
5565         /*
5566          * Establish the starting RPI in this header block.  The starting
5567          * rpi is normalized to a zero base because the physical rpi is
5568          * port based.
5569          */
5570         curr_rpi_range = phba->sli4_hba.next_rpi;
5571         spin_unlock_irq(&phba->hbalock);
5572
5573         /*
5574          * The port has a limited number of rpis. The increment here
5575          * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
5576          * and to allow the full max_rpi range per port.
5577          */
5578         if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
5579                 rpi_count = rpi_limit - curr_rpi_range;
5580         else
5581                 rpi_count = LPFC_RPI_HDR_COUNT;
5582
5583         if (!rpi_count)
5584                 return NULL;
5585         /*
5586          * First allocate the protocol header region for the port.  The
5587          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
5588          */
5589         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5590         if (!dmabuf)
5591                 return NULL;
5592
5593         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5594                                           LPFC_HDR_TEMPLATE_SIZE,
5595                                           &dmabuf->phys,
5596                                           GFP_KERNEL);
5597         if (!dmabuf->virt) {
5598                 rpi_hdr = NULL;
5599                 goto err_free_dmabuf;
5600         }
5601
5602         memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE);
5603         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
5604                 rpi_hdr = NULL;
5605                 goto err_free_coherent;
5606         }
5607
5608         /* Save the rpi header data for cleanup later. */
5609         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
5610         if (!rpi_hdr)
5611                 goto err_free_coherent;
5612
5613         rpi_hdr->dmabuf = dmabuf;
5614         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
5615         rpi_hdr->page_count = 1;
5616         spin_lock_irq(&phba->hbalock);
5617
5618         /* The rpi_hdr stores the logical index only. */
5619         rpi_hdr->start_rpi = curr_rpi_range;
5620         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
5621
5622         /*
5623          * The next_rpi stores the next logical module-64 rpi value used
5624          * to post physical rpis in subsequent rpi postings.
5625          */
5626         phba->sli4_hba.next_rpi += rpi_count;
5627         spin_unlock_irq(&phba->hbalock);
5628         return rpi_hdr;
5629
5630  err_free_coherent:
5631         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
5632                           dmabuf->virt, dmabuf->phys);
5633  err_free_dmabuf:
5634         kfree(dmabuf);
5635         return NULL;
5636 }
5637
5638 /**
5639  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
5640  * @phba: pointer to lpfc hba data structure.
5641  *
5642  * This routine is invoked to remove all memory resources allocated
5643  * to support rpis for SLI4 ports not supporting extents. This routine
5644  * presumes the caller has released all rpis consumed by fabric or port
5645  * logins and is prepared to have the header pages removed.
5646  **/
5647 void
5648 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
5649 {
5650         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
5651
5652         if (!phba->sli4_hba.rpi_hdrs_in_use)
5653                 goto exit;
5654
5655         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
5656                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
5657                 list_del(&rpi_hdr->list);
5658                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
5659                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
5660                 kfree(rpi_hdr->dmabuf);
5661                 kfree(rpi_hdr);
5662         }
5663  exit:
5664         /* There are no rpis available to the port now. */
5665         phba->sli4_hba.next_rpi = 0;
5666 }
5667
5668 /**
5669  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
5670  * @pdev: pointer to pci device data structure.
5671  *
5672  * This routine is invoked to allocate the driver hba data structure for an
5673  * HBA device. If the allocation is successful, the phba reference to the
5674  * PCI device data structure is set.
5675  *
5676  * Return codes
5677  *      pointer to @phba - successful
5678  *      NULL - error
5679  **/
5680 static struct lpfc_hba *
5681 lpfc_hba_alloc(struct pci_dev *pdev)
5682 {
5683         struct lpfc_hba *phba;
5684
5685         /* Allocate memory for HBA structure */
5686         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
5687         if (!phba) {
5688                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
5689                 return NULL;
5690         }
5691
5692         /* Set reference to PCI device in HBA structure */
5693         phba->pcidev = pdev;
5694
5695         /* Assign an unused board number */
5696         phba->brd_no = lpfc_get_instance();
5697         if (phba->brd_no < 0) {
5698                 kfree(phba);
5699                 return NULL;
5700         }
5701
5702         spin_lock_init(&phba->ct_ev_lock);
5703         INIT_LIST_HEAD(&phba->ct_ev_waiters);
5704
5705         return phba;
5706 }
5707
5708 /**
5709  * lpfc_hba_free - Free driver hba data structure with a device.
5710  * @phba: pointer to lpfc hba data structure.
5711  *
5712  * This routine is invoked to free the driver hba data structure with an
5713  * HBA device.
5714  **/
5715 static void
5716 lpfc_hba_free(struct lpfc_hba *phba)
5717 {
5718         /* Release the driver assigned board number */
5719         idr_remove(&lpfc_hba_index, phba->brd_no);
5720
5721         /* Free memory allocated with sli rings */
5722         kfree(phba->sli.ring);
5723         phba->sli.ring = NULL;
5724
5725         kfree(phba);
5726         return;
5727 }
5728
5729 /**
5730  * lpfc_create_shost - Create hba physical port with associated scsi host.
5731  * @phba: pointer to lpfc hba data structure.
5732  *
5733  * This routine is invoked to create HBA physical port and associate a SCSI
5734  * host with it.
5735  *
5736  * Return codes
5737  *      0 - successful
5738  *      other values - error
5739  **/
5740 static int
5741 lpfc_create_shost(struct lpfc_hba *phba)
5742 {
5743         struct lpfc_vport *vport;
5744         struct Scsi_Host  *shost;
5745
5746         /* Initialize HBA FC structure */
5747         phba->fc_edtov = FF_DEF_EDTOV;
5748         phba->fc_ratov = FF_DEF_RATOV;
5749         phba->fc_altov = FF_DEF_ALTOV;
5750         phba->fc_arbtov = FF_DEF_ARBTOV;
5751
5752         atomic_set(&phba->sdev_cnt, 0);
5753         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
5754         if (!vport)
5755                 return -ENODEV;
5756
5757         shost = lpfc_shost_from_vport(vport);
5758         phba->pport = vport;
5759         lpfc_debugfs_initialize(vport);
5760         /* Put reference to SCSI host to driver's device private data */
5761         pci_set_drvdata(phba->pcidev, shost);
5762
5763         return 0;
5764 }
5765
5766 /**
5767  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
5768  * @phba: pointer to lpfc hba data structure.
5769  *
5770  * This routine is invoked to destroy HBA physical port and the associated
5771  * SCSI host.
5772  **/
5773 static void
5774 lpfc_destroy_shost(struct lpfc_hba *phba)
5775 {
5776         struct lpfc_vport *vport = phba->pport;
5777
5778         /* Destroy physical port that associated with the SCSI host */
5779         destroy_port(vport);
5780
5781         return;
5782 }
5783
5784 /**
5785  * lpfc_setup_bg - Setup Block guard structures and debug areas.
5786  * @phba: pointer to lpfc hba data structure.
5787  * @shost: the shost to be used to detect Block guard settings.
5788  *
5789  * This routine sets up the local Block guard protocol settings for @shost.
5790  * This routine also allocates memory for debugging bg buffers.
5791  **/
5792 static void
5793 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
5794 {
5795         uint32_t old_mask;
5796         uint32_t old_guard;
5797
5798         int pagecnt = 10;
5799         if (lpfc_prot_mask && lpfc_prot_guard) {
5800                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5801                                 "1478 Registering BlockGuard with the "
5802                                 "SCSI layer\n");
5803
5804                 old_mask = lpfc_prot_mask;
5805                 old_guard = lpfc_prot_guard;
5806
5807                 /* Only allow supported values */
5808                 lpfc_prot_mask &= (SHOST_DIF_TYPE1_PROTECTION |
5809                         SHOST_DIX_TYPE0_PROTECTION |
5810                         SHOST_DIX_TYPE1_PROTECTION);
5811                 lpfc_prot_guard &= (SHOST_DIX_GUARD_IP | SHOST_DIX_GUARD_CRC);
5812
5813                 /* DIF Type 1 protection for profiles AST1/C1 is end to end */
5814                 if (lpfc_prot_mask == SHOST_DIX_TYPE1_PROTECTION)
5815                         lpfc_prot_mask |= SHOST_DIF_TYPE1_PROTECTION;
5816
5817                 if (lpfc_prot_mask && lpfc_prot_guard) {
5818                         if ((old_mask != lpfc_prot_mask) ||
5819                                 (old_guard != lpfc_prot_guard))
5820                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5821                                         "1475 Registering BlockGuard with the "
5822                                         "SCSI layer: mask %d  guard %d\n",
5823                                         lpfc_prot_mask, lpfc_prot_guard);
5824
5825                         scsi_host_set_prot(shost, lpfc_prot_mask);
5826                         scsi_host_set_guard(shost, lpfc_prot_guard);
5827                 } else
5828                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5829                                 "1479 Not Registering BlockGuard with the SCSI "
5830                                 "layer, Bad protection parameters: %d %d\n",
5831                                 old_mask, old_guard);
5832         }
5833
5834         if (!_dump_buf_data) {
5835                 while (pagecnt) {
5836                         spin_lock_init(&_dump_buf_lock);
5837                         _dump_buf_data =
5838                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5839                         if (_dump_buf_data) {
5840                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5841                                         "9043 BLKGRD: allocated %d pages for "
5842                                        "_dump_buf_data at 0x%p\n",
5843                                        (1 << pagecnt), _dump_buf_data);
5844                                 _dump_buf_data_order = pagecnt;
5845                                 memset(_dump_buf_data, 0,
5846                                        ((1 << PAGE_SHIFT) << pagecnt));
5847                                 break;
5848                         } else
5849                                 --pagecnt;
5850                 }
5851                 if (!_dump_buf_data_order)
5852                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5853                                 "9044 BLKGRD: ERROR unable to allocate "
5854                                "memory for hexdump\n");
5855         } else
5856                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5857                         "9045 BLKGRD: already allocated _dump_buf_data=0x%p"
5858                        "\n", _dump_buf_data);
5859         if (!_dump_buf_dif) {
5860                 while (pagecnt) {
5861                         _dump_buf_dif =
5862                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5863                         if (_dump_buf_dif) {
5864                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5865                                         "9046 BLKGRD: allocated %d pages for "
5866                                        "_dump_buf_dif at 0x%p\n",
5867                                        (1 << pagecnt), _dump_buf_dif);
5868                                 _dump_buf_dif_order = pagecnt;
5869                                 memset(_dump_buf_dif, 0,
5870                                        ((1 << PAGE_SHIFT) << pagecnt));
5871                                 break;
5872                         } else
5873                                 --pagecnt;
5874                 }
5875                 if (!_dump_buf_dif_order)
5876                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5877                         "9047 BLKGRD: ERROR unable to allocate "
5878                                "memory for hexdump\n");
5879         } else
5880                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5881                         "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
5882                        _dump_buf_dif);
5883 }
5884
5885 /**
5886  * lpfc_post_init_setup - Perform necessary device post initialization setup.
5887  * @phba: pointer to lpfc hba data structure.
5888  *
5889  * This routine is invoked to perform all the necessary post initialization
5890  * setup for the device.
5891  **/
5892 static void
5893 lpfc_post_init_setup(struct lpfc_hba *phba)
5894 {
5895         struct Scsi_Host  *shost;
5896         struct lpfc_adapter_event_header adapter_event;
5897
5898         /* Get the default values for Model Name and Description */
5899         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
5900
5901         /*
5902          * hba setup may have changed the hba_queue_depth so we need to
5903          * adjust the value of can_queue.
5904          */
5905         shost = pci_get_drvdata(phba->pcidev);
5906         shost->can_queue = phba->cfg_hba_queue_depth - 10;
5907         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
5908                 lpfc_setup_bg(phba, shost);
5909
5910         lpfc_host_attrib_init(shost);
5911
5912         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
5913                 spin_lock_irq(shost->host_lock);
5914                 lpfc_poll_start_timer(phba);
5915                 spin_unlock_irq(shost->host_lock);
5916         }
5917
5918         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5919                         "0428 Perform SCSI scan\n");
5920         /* Send board arrival event to upper layer */
5921         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
5922         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
5923         fc_host_post_vendor_event(shost, fc_get_event_number(),
5924                                   sizeof(adapter_event),
5925                                   (char *) &adapter_event,
5926                                   LPFC_NL_VENDOR_ID);
5927         return;
5928 }
5929
5930 /**
5931  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
5932  * @phba: pointer to lpfc hba data structure.
5933  *
5934  * This routine is invoked to set up the PCI device memory space for device
5935  * with SLI-3 interface spec.
5936  *
5937  * Return codes
5938  *      0 - successful
5939  *      other values - error
5940  **/
5941 static int
5942 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
5943 {
5944         struct pci_dev *pdev;
5945         unsigned long bar0map_len, bar2map_len;
5946         int i, hbq_count;
5947         void *ptr;
5948         int error = -ENODEV;
5949
5950         /* Obtain PCI device reference */
5951         if (!phba->pcidev)
5952                 return error;
5953         else
5954                 pdev = phba->pcidev;
5955
5956         /* Set the device DMA mask size */
5957         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
5958          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
5959                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
5960                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
5961                         return error;
5962                 }
5963         }
5964
5965         /* Get the bus address of Bar0 and Bar2 and the number of bytes
5966          * required by each mapping.
5967          */
5968         phba->pci_bar0_map = pci_resource_start(pdev, 0);
5969         bar0map_len = pci_resource_len(pdev, 0);
5970
5971         phba->pci_bar2_map = pci_resource_start(pdev, 2);
5972         bar2map_len = pci_resource_len(pdev, 2);
5973
5974         /* Map HBA SLIM to a kernel virtual address. */
5975         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
5976         if (!phba->slim_memmap_p) {
5977                 dev_printk(KERN_ERR, &pdev->dev,
5978                            "ioremap failed for SLIM memory.\n");
5979                 goto out;
5980         }
5981
5982         /* Map HBA Control Registers to a kernel virtual address. */
5983         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
5984         if (!phba->ctrl_regs_memmap_p) {
5985                 dev_printk(KERN_ERR, &pdev->dev,
5986                            "ioremap failed for HBA control registers.\n");
5987                 goto out_iounmap_slim;
5988         }
5989
5990         /* Allocate memory for SLI-2 structures */
5991         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev,
5992                                                SLI2_SLIM_SIZE,
5993                                                &phba->slim2p.phys,
5994                                                GFP_KERNEL);
5995         if (!phba->slim2p.virt)
5996                 goto out_iounmap;
5997
5998         memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
5999         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
6000         phba->mbox_ext = (phba->slim2p.virt +
6001                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
6002         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
6003         phba->IOCBs = (phba->slim2p.virt +
6004                        offsetof(struct lpfc_sli2_slim, IOCBs));
6005
6006         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
6007                                                  lpfc_sli_hbq_size(),
6008                                                  &phba->hbqslimp.phys,
6009                                                  GFP_KERNEL);
6010         if (!phba->hbqslimp.virt)
6011                 goto out_free_slim;
6012
6013         hbq_count = lpfc_sli_hbq_count();
6014         ptr = phba->hbqslimp.virt;
6015         for (i = 0; i < hbq_count; ++i) {
6016                 phba->hbqs[i].hbq_virt = ptr;
6017                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
6018                 ptr += (lpfc_hbq_defs[i]->entry_count *
6019                         sizeof(struct lpfc_hbq_entry));
6020         }
6021         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
6022         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
6023
6024         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
6025
6026         INIT_LIST_HEAD(&phba->rb_pend_list);
6027
6028         phba->MBslimaddr = phba->slim_memmap_p;
6029         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
6030         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
6031         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
6032         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
6033
6034         return 0;
6035
6036 out_free_slim:
6037         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
6038                           phba->slim2p.virt, phba->slim2p.phys);
6039 out_iounmap:
6040         iounmap(phba->ctrl_regs_memmap_p);
6041 out_iounmap_slim:
6042         iounmap(phba->slim_memmap_p);
6043 out:
6044         return error;
6045 }
6046
6047 /**
6048  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
6049  * @phba: pointer to lpfc hba data structure.
6050  *
6051  * This routine is invoked to unset the PCI device memory space for device
6052  * with SLI-3 interface spec.
6053  **/
6054 static void
6055 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
6056 {
6057         struct pci_dev *pdev;
6058
6059         /* Obtain PCI device reference */
6060         if (!phba->pcidev)
6061                 return;
6062         else
6063                 pdev = phba->pcidev;
6064
6065         /* Free coherent DMA memory allocated */
6066         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
6067                           phba->hbqslimp.virt, phba->hbqslimp.phys);
6068         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
6069                           phba->slim2p.virt, phba->slim2p.phys);
6070
6071         /* I/O memory unmap */
6072         iounmap(phba->ctrl_regs_memmap_p);
6073         iounmap(phba->slim_memmap_p);
6074
6075         return;
6076 }
6077
6078 /**
6079  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
6080  * @phba: pointer to lpfc hba data structure.
6081  *
6082  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
6083  * done and check status.
6084  *
6085  * Return 0 if successful, otherwise -ENODEV.
6086  **/
6087 int
6088 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
6089 {
6090         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
6091         struct lpfc_register reg_data;
6092         int i, port_error = 0;
6093         uint32_t if_type;
6094
6095         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
6096         memset(&reg_data, 0, sizeof(reg_data));
6097         if (!phba->sli4_hba.PSMPHRregaddr)
6098                 return -ENODEV;
6099
6100         /* Wait up to 30 seconds for the SLI Port POST done and ready */
6101         for (i = 0; i < 3000; i++) {
6102                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
6103                         &portsmphr_reg.word0) ||
6104                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
6105                         /* Port has a fatal POST error, break out */
6106                         port_error = -ENODEV;
6107                         break;
6108                 }
6109                 if (LPFC_POST_STAGE_PORT_READY ==
6110                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
6111                         break;
6112                 msleep(10);
6113         }
6114
6115         /*
6116          * If there was a port error during POST, then don't proceed with
6117          * other register reads as the data may not be valid.  Just exit.
6118          */
6119         if (port_error) {
6120                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6121                         "1408 Port Failed POST - portsmphr=0x%x, "
6122                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
6123                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
6124                         portsmphr_reg.word0,
6125                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
6126                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
6127                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
6128                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
6129                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
6130                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
6131                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
6132                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
6133         } else {
6134                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6135                                 "2534 Device Info: SLIFamily=0x%x, "
6136                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
6137                                 "SLIHint_2=0x%x, FT=0x%x\n",
6138                                 bf_get(lpfc_sli_intf_sli_family,
6139                                        &phba->sli4_hba.sli_intf),
6140                                 bf_get(lpfc_sli_intf_slirev,
6141                                        &phba->sli4_hba.sli_intf),
6142                                 bf_get(lpfc_sli_intf_if_type,
6143                                        &phba->sli4_hba.sli_intf),
6144                                 bf_get(lpfc_sli_intf_sli_hint1,
6145                                        &phba->sli4_hba.sli_intf),
6146                                 bf_get(lpfc_sli_intf_sli_hint2,
6147                                        &phba->sli4_hba.sli_intf),
6148                                 bf_get(lpfc_sli_intf_func_type,
6149                                        &phba->sli4_hba.sli_intf));
6150                 /*
6151                  * Check for other Port errors during the initialization
6152                  * process.  Fail the load if the port did not come up
6153                  * correctly.
6154                  */
6155                 if_type = bf_get(lpfc_sli_intf_if_type,
6156                                  &phba->sli4_hba.sli_intf);
6157                 switch (if_type) {
6158                 case LPFC_SLI_INTF_IF_TYPE_0:
6159                         phba->sli4_hba.ue_mask_lo =
6160                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
6161                         phba->sli4_hba.ue_mask_hi =
6162                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
6163                         uerrlo_reg.word0 =
6164                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
6165                         uerrhi_reg.word0 =
6166                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
6167                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
6168                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
6169                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6170                                                 "1422 Unrecoverable Error "
6171                                                 "Detected during POST "
6172                                                 "uerr_lo_reg=0x%x, "
6173                                                 "uerr_hi_reg=0x%x, "
6174                                                 "ue_mask_lo_reg=0x%x, "
6175                                                 "ue_mask_hi_reg=0x%x\n",
6176                                                 uerrlo_reg.word0,
6177                                                 uerrhi_reg.word0,
6178                                                 phba->sli4_hba.ue_mask_lo,
6179                                                 phba->sli4_hba.ue_mask_hi);
6180                                 port_error = -ENODEV;
6181                         }
6182                         break;
6183                 case LPFC_SLI_INTF_IF_TYPE_2:
6184                         /* Final checks.  The port status should be clean. */
6185                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
6186                                 &reg_data.word0) ||
6187                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
6188                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
6189                                 phba->work_status[0] =
6190                                         readl(phba->sli4_hba.u.if_type2.
6191                                               ERR1regaddr);
6192                                 phba->work_status[1] =
6193                                         readl(phba->sli4_hba.u.if_type2.
6194                                               ERR2regaddr);
6195                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6196                                         "2888 Unrecoverable port error "
6197                                         "following POST: port status reg "
6198                                         "0x%x, port_smphr reg 0x%x, "
6199                                         "error 1=0x%x, error 2=0x%x\n",
6200                                         reg_data.word0,
6201                                         portsmphr_reg.word0,
6202                                         phba->work_status[0],
6203                                         phba->work_status[1]);
6204                                 port_error = -ENODEV;
6205                         }
6206                         break;
6207                 case LPFC_SLI_INTF_IF_TYPE_1:
6208                 default:
6209                         break;
6210                 }
6211         }
6212         return port_error;
6213 }
6214
6215 /**
6216  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
6217  * @phba: pointer to lpfc hba data structure.
6218  * @if_type:  The SLI4 interface type getting configured.
6219  *
6220  * This routine is invoked to set up SLI4 BAR0 PCI config space register
6221  * memory map.
6222  **/
6223 static void
6224 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
6225 {
6226         switch (if_type) {
6227         case LPFC_SLI_INTF_IF_TYPE_0:
6228                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
6229                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
6230                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
6231                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
6232                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
6233                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
6234                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
6235                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
6236                 phba->sli4_hba.SLIINTFregaddr =
6237                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
6238                 break;
6239         case LPFC_SLI_INTF_IF_TYPE_2:
6240                 phba->sli4_hba.u.if_type2.ERR1regaddr =
6241                         phba->sli4_hba.conf_regs_memmap_p +
6242                                                 LPFC_CTL_PORT_ER1_OFFSET;
6243                 phba->sli4_hba.u.if_type2.ERR2regaddr =
6244                         phba->sli4_hba.conf_regs_memmap_p +
6245                                                 LPFC_CTL_PORT_ER2_OFFSET;
6246                 phba->sli4_hba.u.if_type2.CTRLregaddr =
6247                         phba->sli4_hba.conf_regs_memmap_p +
6248                                                 LPFC_CTL_PORT_CTL_OFFSET;
6249                 phba->sli4_hba.u.if_type2.STATUSregaddr =
6250                         phba->sli4_hba.conf_regs_memmap_p +
6251                                                 LPFC_CTL_PORT_STA_OFFSET;
6252                 phba->sli4_hba.SLIINTFregaddr =
6253                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
6254                 phba->sli4_hba.PSMPHRregaddr =
6255                         phba->sli4_hba.conf_regs_memmap_p +
6256                                                 LPFC_CTL_PORT_SEM_OFFSET;
6257                 phba->sli4_hba.RQDBregaddr =
6258                         phba->sli4_hba.conf_regs_memmap_p +
6259                                                 LPFC_ULP0_RQ_DOORBELL;
6260                 phba->sli4_hba.WQDBregaddr =
6261                         phba->sli4_hba.conf_regs_memmap_p +
6262                                                 LPFC_ULP0_WQ_DOORBELL;
6263                 phba->sli4_hba.EQCQDBregaddr =
6264                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
6265                 phba->sli4_hba.MQDBregaddr =
6266                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
6267                 phba->sli4_hba.BMBXregaddr =
6268                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
6269                 break;
6270         case LPFC_SLI_INTF_IF_TYPE_1:
6271         default:
6272                 dev_printk(KERN_ERR, &phba->pcidev->dev,
6273                            "FATAL - unsupported SLI4 interface type - %d\n",
6274                            if_type);
6275                 break;
6276         }
6277 }
6278
6279 /**
6280  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
6281  * @phba: pointer to lpfc hba data structure.
6282  *
6283  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
6284  * memory map.
6285  **/
6286 static void
6287 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
6288 {
6289         phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6290                 LPFC_SLIPORT_IF0_SMPHR;
6291         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6292                 LPFC_HST_ISR0;
6293         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6294                 LPFC_HST_IMR0;
6295         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
6296                 LPFC_HST_ISCR0;
6297 }
6298
6299 /**
6300  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
6301  * @phba: pointer to lpfc hba data structure.
6302  * @vf: virtual function number
6303  *
6304  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
6305  * based on the given viftual function number, @vf.
6306  *
6307  * Return 0 if successful, otherwise -ENODEV.
6308  **/
6309 static int
6310 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
6311 {
6312         if (vf > LPFC_VIR_FUNC_MAX)
6313                 return -ENODEV;
6314
6315         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6316                                 vf * LPFC_VFR_PAGE_SIZE +
6317                                         LPFC_ULP0_RQ_DOORBELL);
6318         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6319                                 vf * LPFC_VFR_PAGE_SIZE +
6320                                         LPFC_ULP0_WQ_DOORBELL);
6321         phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6322                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
6323         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6324                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
6325         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
6326                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
6327         return 0;
6328 }
6329
6330 /**
6331  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
6332  * @phba: pointer to lpfc hba data structure.
6333  *
6334  * This routine is invoked to create the bootstrap mailbox
6335  * region consistent with the SLI-4 interface spec.  This
6336  * routine allocates all memory necessary to communicate
6337  * mailbox commands to the port and sets up all alignment
6338  * needs.  No locks are expected to be held when calling
6339  * this routine.
6340  *
6341  * Return codes
6342  *      0 - successful
6343  *      -ENOMEM - could not allocated memory.
6344  **/
6345 static int
6346 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
6347 {
6348         uint32_t bmbx_size;
6349         struct lpfc_dmabuf *dmabuf;
6350         struct dma_address *dma_address;
6351         uint32_t pa_addr;
6352         uint64_t phys_addr;
6353
6354         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
6355         if (!dmabuf)
6356                 return -ENOMEM;
6357
6358         /*
6359          * The bootstrap mailbox region is comprised of 2 parts
6360          * plus an alignment restriction of 16 bytes.
6361          */
6362         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
6363         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
6364                                           bmbx_size,
6365                                           &dmabuf->phys,
6366                                           GFP_KERNEL);
6367         if (!dmabuf->virt) {
6368                 kfree(dmabuf);
6369                 return -ENOMEM;
6370         }
6371         memset(dmabuf->virt, 0, bmbx_size);
6372
6373         /*
6374          * Initialize the bootstrap mailbox pointers now so that the register
6375          * operations are simple later.  The mailbox dma address is required
6376          * to be 16-byte aligned.  Also align the virtual memory as each
6377          * maibox is copied into the bmbx mailbox region before issuing the
6378          * command to the port.
6379          */
6380         phba->sli4_hba.bmbx.dmabuf = dmabuf;
6381         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
6382
6383         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
6384                                               LPFC_ALIGN_16_BYTE);
6385         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
6386                                               LPFC_ALIGN_16_BYTE);
6387
6388         /*
6389          * Set the high and low physical addresses now.  The SLI4 alignment
6390          * requirement is 16 bytes and the mailbox is posted to the port
6391          * as two 30-bit addresses.  The other data is a bit marking whether
6392          * the 30-bit address is the high or low address.
6393          * Upcast bmbx aphys to 64bits so shift instruction compiles
6394          * clean on 32 bit machines.
6395          */
6396         dma_address = &phba->sli4_hba.bmbx.dma_address;
6397         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
6398         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
6399         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
6400                                            LPFC_BMBX_BIT1_ADDR_HI);
6401
6402         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
6403         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
6404                                            LPFC_BMBX_BIT1_ADDR_LO);
6405         return 0;
6406 }
6407
6408 /**
6409  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
6410  * @phba: pointer to lpfc hba data structure.
6411  *
6412  * This routine is invoked to teardown the bootstrap mailbox
6413  * region and release all host resources. This routine requires
6414  * the caller to ensure all mailbox commands recovered, no
6415  * additional mailbox comands are sent, and interrupts are disabled
6416  * before calling this routine.
6417  *
6418  **/
6419 static void
6420 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
6421 {
6422         dma_free_coherent(&phba->pcidev->dev,
6423                           phba->sli4_hba.bmbx.bmbx_size,
6424                           phba->sli4_hba.bmbx.dmabuf->virt,
6425                           phba->sli4_hba.bmbx.dmabuf->phys);
6426
6427         kfree(phba->sli4_hba.bmbx.dmabuf);
6428         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
6429 }
6430
6431 /**
6432  * lpfc_sli4_read_config - Get the config parameters.
6433  * @phba: pointer to lpfc hba data structure.
6434  *
6435  * This routine is invoked to read the configuration parameters from the HBA.
6436  * The configuration parameters are used to set the base and maximum values
6437  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
6438  * allocation for the port.
6439  *
6440  * Return codes
6441  *      0 - successful
6442  *      -ENOMEM - No available memory
6443  *      -EIO - The mailbox failed to complete successfully.
6444  **/
6445 int
6446 lpfc_sli4_read_config(struct lpfc_hba *phba)
6447 {
6448         LPFC_MBOXQ_t *pmb;
6449         struct lpfc_mbx_read_config *rd_config;
6450         union  lpfc_sli4_cfg_shdr *shdr;
6451         uint32_t shdr_status, shdr_add_status;
6452         struct lpfc_mbx_get_func_cfg *get_func_cfg;
6453         struct lpfc_rsrc_desc_fcfcoe *desc;
6454         char *pdesc_0;
6455         uint32_t desc_count;
6456         int length, i, rc = 0, rc2;
6457
6458         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6459         if (!pmb) {
6460                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6461                                 "2011 Unable to allocate memory for issuing "
6462                                 "SLI_CONFIG_SPECIAL mailbox command\n");
6463                 return -ENOMEM;
6464         }
6465
6466         lpfc_read_config(phba, pmb);
6467
6468         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6469         if (rc != MBX_SUCCESS) {
6470                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6471                         "2012 Mailbox failed , mbxCmd x%x "
6472                         "READ_CONFIG, mbxStatus x%x\n",
6473                         bf_get(lpfc_mqe_command, &pmb->u.mqe),
6474                         bf_get(lpfc_mqe_status, &pmb->u.mqe));
6475                 rc = -EIO;
6476         } else {
6477                 rd_config = &pmb->u.mqe.un.rd_config;
6478                 if (bf_get(lpfc_mbx_rd_conf_lnk_ldv, rd_config)) {
6479                         phba->sli4_hba.lnk_info.lnk_dv = LPFC_LNK_DAT_VAL;
6480                         phba->sli4_hba.lnk_info.lnk_tp =
6481                                 bf_get(lpfc_mbx_rd_conf_lnk_type, rd_config);
6482                         phba->sli4_hba.lnk_info.lnk_no =
6483                                 bf_get(lpfc_mbx_rd_conf_lnk_numb, rd_config);
6484                         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6485                                         "3081 lnk_type:%d, lnk_numb:%d\n",
6486                                         phba->sli4_hba.lnk_info.lnk_tp,
6487                                         phba->sli4_hba.lnk_info.lnk_no);
6488                 } else
6489                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
6490                                         "3082 Mailbox (x%x) returned ldv:x0\n",
6491                                         bf_get(lpfc_mqe_command, &pmb->u.mqe));
6492                 phba->sli4_hba.extents_in_use =
6493                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
6494                 phba->sli4_hba.max_cfg_param.max_xri =
6495                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
6496                 phba->sli4_hba.max_cfg_param.xri_base =
6497                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
6498                 phba->sli4_hba.max_cfg_param.max_vpi =
6499                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
6500                 phba->sli4_hba.max_cfg_param.vpi_base =
6501                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
6502                 phba->sli4_hba.max_cfg_param.max_rpi =
6503                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
6504                 phba->sli4_hba.max_cfg_param.rpi_base =
6505                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
6506                 phba->sli4_hba.max_cfg_param.max_vfi =
6507                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
6508                 phba->sli4_hba.max_cfg_param.vfi_base =
6509                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
6510                 phba->sli4_hba.max_cfg_param.max_fcfi =
6511                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
6512                 phba->sli4_hba.max_cfg_param.max_eq =
6513                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
6514                 phba->sli4_hba.max_cfg_param.max_rq =
6515                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
6516                 phba->sli4_hba.max_cfg_param.max_wq =
6517                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
6518                 phba->sli4_hba.max_cfg_param.max_cq =
6519                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
6520                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
6521                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
6522                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
6523                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
6524                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
6525                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
6526                 phba->max_vports = phba->max_vpi;
6527                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6528                                 "2003 cfg params Extents? %d "
6529                                 "XRI(B:%d M:%d), "
6530                                 "VPI(B:%d M:%d) "
6531                                 "VFI(B:%d M:%d) "
6532                                 "RPI(B:%d M:%d) "
6533                                 "FCFI(Count:%d)\n",
6534                                 phba->sli4_hba.extents_in_use,
6535                                 phba->sli4_hba.max_cfg_param.xri_base,
6536                                 phba->sli4_hba.max_cfg_param.max_xri,
6537                                 phba->sli4_hba.max_cfg_param.vpi_base,
6538                                 phba->sli4_hba.max_cfg_param.max_vpi,
6539                                 phba->sli4_hba.max_cfg_param.vfi_base,
6540                                 phba->sli4_hba.max_cfg_param.max_vfi,
6541                                 phba->sli4_hba.max_cfg_param.rpi_base,
6542                                 phba->sli4_hba.max_cfg_param.max_rpi,
6543                                 phba->sli4_hba.max_cfg_param.max_fcfi);
6544         }
6545
6546         if (rc)
6547                 goto read_cfg_out;
6548
6549         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
6550         if (phba->cfg_hba_queue_depth >
6551                 (phba->sli4_hba.max_cfg_param.max_xri -
6552                         lpfc_sli4_get_els_iocb_cnt(phba)))
6553                 phba->cfg_hba_queue_depth =
6554                         phba->sli4_hba.max_cfg_param.max_xri -
6555                                 lpfc_sli4_get_els_iocb_cnt(phba);
6556
6557         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
6558             LPFC_SLI_INTF_IF_TYPE_2)
6559                 goto read_cfg_out;
6560
6561         /* get the pf# and vf# for SLI4 if_type 2 port */
6562         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
6563                   sizeof(struct lpfc_sli4_cfg_mhdr));
6564         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
6565                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
6566                          length, LPFC_SLI4_MBX_EMBED);
6567
6568         rc2 = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6569         shdr = (union lpfc_sli4_cfg_shdr *)
6570                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
6571         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6572         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
6573         if (rc2 || shdr_status || shdr_add_status) {
6574                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6575                                 "3026 Mailbox failed , mbxCmd x%x "
6576                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
6577                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
6578                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
6579                 goto read_cfg_out;
6580         }
6581
6582         /* search for fc_fcoe resrouce descriptor */
6583         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
6584         desc_count = get_func_cfg->func_cfg.rsrc_desc_count;
6585
6586         pdesc_0 = (char *)&get_func_cfg->func_cfg.desc[0];
6587         desc = (struct lpfc_rsrc_desc_fcfcoe *)pdesc_0;
6588         length = bf_get(lpfc_rsrc_desc_fcfcoe_length, desc);
6589         if (length == LPFC_RSRC_DESC_TYPE_FCFCOE_V0_RSVD)
6590                 length = LPFC_RSRC_DESC_TYPE_FCFCOE_V0_LENGTH;
6591         else if (length != LPFC_RSRC_DESC_TYPE_FCFCOE_V1_LENGTH)
6592                 goto read_cfg_out;
6593
6594         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
6595                 desc = (struct lpfc_rsrc_desc_fcfcoe *)(pdesc_0 + length * i);
6596                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
6597                     bf_get(lpfc_rsrc_desc_fcfcoe_type, desc)) {
6598                         phba->sli4_hba.iov.pf_number =
6599                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
6600                         phba->sli4_hba.iov.vf_number =
6601                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
6602                         break;
6603                 }
6604         }
6605
6606         if (i < LPFC_RSRC_DESC_MAX_NUM)
6607                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6608                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
6609                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
6610                                 phba->sli4_hba.iov.vf_number);
6611         else
6612                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6613                                 "3028 GET_FUNCTION_CONFIG: failed to find "
6614                                 "Resrouce Descriptor:x%x\n",
6615                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
6616
6617 read_cfg_out:
6618         mempool_free(pmb, phba->mbox_mem_pool);
6619         return rc;
6620 }
6621
6622 /**
6623  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
6624  * @phba: pointer to lpfc hba data structure.
6625  *
6626  * This routine is invoked to setup the port-side endian order when
6627  * the port if_type is 0.  This routine has no function for other
6628  * if_types.
6629  *
6630  * Return codes
6631  *      0 - successful
6632  *      -ENOMEM - No available memory
6633  *      -EIO - The mailbox failed to complete successfully.
6634  **/
6635 static int
6636 lpfc_setup_endian_order(struct lpfc_hba *phba)
6637 {
6638         LPFC_MBOXQ_t *mboxq;
6639         uint32_t if_type, rc = 0;
6640         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
6641                                       HOST_ENDIAN_HIGH_WORD1};
6642
6643         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6644         switch (if_type) {
6645         case LPFC_SLI_INTF_IF_TYPE_0:
6646                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6647                                                        GFP_KERNEL);
6648                 if (!mboxq) {
6649                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6650                                         "0492 Unable to allocate memory for "
6651                                         "issuing SLI_CONFIG_SPECIAL mailbox "
6652                                         "command\n");
6653                         return -ENOMEM;
6654                 }
6655
6656                 /*
6657                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
6658                  * two words to contain special data values and no other data.
6659                  */
6660                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
6661                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
6662                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6663                 if (rc != MBX_SUCCESS) {
6664                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6665                                         "0493 SLI_CONFIG_SPECIAL mailbox "
6666                                         "failed with status x%x\n",
6667                                         rc);
6668                         rc = -EIO;
6669                 }
6670                 mempool_free(mboxq, phba->mbox_mem_pool);
6671                 break;
6672         case LPFC_SLI_INTF_IF_TYPE_2:
6673         case LPFC_SLI_INTF_IF_TYPE_1:
6674         default:
6675                 break;
6676         }
6677         return rc;
6678 }
6679
6680 /**
6681  * lpfc_sli4_queue_verify - Verify and update EQ and CQ counts
6682  * @phba: pointer to lpfc hba data structure.
6683  *
6684  * This routine is invoked to check the user settable queue counts for EQs and
6685  * CQs. after this routine is called the counts will be set to valid values that
6686  * adhere to the constraints of the system's interrupt vectors and the port's
6687  * queue resources.
6688  *
6689  * Return codes
6690  *      0 - successful
6691  *      -ENOMEM - No available memory
6692  **/
6693 static int
6694 lpfc_sli4_queue_verify(struct lpfc_hba *phba)
6695 {
6696         int cfg_fcp_io_channel;
6697         uint32_t cpu;
6698         uint32_t i = 0;
6699
6700
6701         /*
6702          * Sanity check for configured queue parameters against the run-time
6703          * device parameters
6704          */
6705
6706         /* Sanity check on HBA EQ parameters */
6707         cfg_fcp_io_channel = phba->cfg_fcp_io_channel;
6708
6709         /* It doesn't make sense to have more io channels then CPUs */
6710         for_each_online_cpu(cpu) {
6711                 i++;
6712         }
6713         if (i < cfg_fcp_io_channel) {
6714                 lpfc_printf_log(phba,
6715                                 KERN_ERR, LOG_INIT,
6716                                 "3188 Reducing IO channels to match number of "
6717                                 "CPUs: from %d to %d\n", cfg_fcp_io_channel, i);
6718                 cfg_fcp_io_channel = i;
6719         }
6720
6721         if (cfg_fcp_io_channel >
6722             phba->sli4_hba.max_cfg_param.max_eq) {
6723                 if (phba->sli4_hba.max_cfg_param.max_eq <
6724                     LPFC_FCP_IO_CHAN_MIN) {
6725                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6726                                         "2574 Not enough EQs (%d) from the "
6727                                         "pci function for supporting FCP "
6728                                         "EQs (%d)\n",
6729                                         phba->sli4_hba.max_cfg_param.max_eq,
6730                                         phba->cfg_fcp_io_channel);
6731                         goto out_error;
6732                 }
6733                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6734                                 "2575 Reducing IO channels to match number of "
6735                                 "available EQs: from %d to %d\n",
6736                                 cfg_fcp_io_channel,
6737                                 phba->sli4_hba.max_cfg_param.max_eq);
6738                 cfg_fcp_io_channel = phba->sli4_hba.max_cfg_param.max_eq;
6739         }
6740
6741         /* Eventually cfg_fcp_eq_count / cfg_fcp_wq_count will be depricated */
6742
6743         /* The actual number of FCP event queues adopted */
6744         phba->cfg_fcp_eq_count = cfg_fcp_io_channel;
6745         phba->cfg_fcp_wq_count = cfg_fcp_io_channel;
6746         phba->cfg_fcp_io_channel = cfg_fcp_io_channel;
6747
6748         /* Get EQ depth from module parameter, fake the default for now */
6749         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
6750         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
6751
6752         /* Get CQ depth from module parameter, fake the default for now */
6753         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
6754         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
6755
6756         return 0;
6757 out_error:
6758         return -ENOMEM;
6759 }
6760
6761 /**
6762  * lpfc_sli4_queue_create - Create all the SLI4 queues
6763  * @phba: pointer to lpfc hba data structure.
6764  *
6765  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
6766  * operation. For each SLI4 queue type, the parameters such as queue entry
6767  * count (queue depth) shall be taken from the module parameter. For now,
6768  * we just use some constant number as place holder.
6769  *
6770  * Return codes
6771  *      0 - successful
6772  *      -ENOMEM - No availble memory
6773  *      -EIO - The mailbox failed to complete successfully.
6774  **/
6775 int
6776 lpfc_sli4_queue_create(struct lpfc_hba *phba)
6777 {
6778         struct lpfc_queue *qdesc;
6779         int idx;
6780
6781         /*
6782          * Create HBA Record arrays.
6783          */
6784         if (!phba->cfg_fcp_io_channel)
6785                 return -ERANGE;
6786
6787         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
6788         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
6789         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
6790         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
6791         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
6792         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
6793
6794         phba->sli4_hba.hba_eq =  kzalloc((sizeof(struct lpfc_queue *) *
6795                                 phba->cfg_fcp_io_channel), GFP_KERNEL);
6796         if (!phba->sli4_hba.hba_eq) {
6797                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6798                         "2576 Failed allocate memory for "
6799                         "fast-path EQ record array\n");
6800                 goto out_error;
6801         }
6802
6803         phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
6804                                 phba->cfg_fcp_io_channel), GFP_KERNEL);
6805         if (!phba->sli4_hba.fcp_cq) {
6806                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6807                                 "2577 Failed allocate memory for fast-path "
6808                                 "CQ record array\n");
6809                 goto out_error;
6810         }
6811
6812         phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
6813                                 phba->cfg_fcp_io_channel), GFP_KERNEL);
6814         if (!phba->sli4_hba.fcp_wq) {
6815                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6816                                 "2578 Failed allocate memory for fast-path "
6817                                 "WQ record array\n");
6818                 goto out_error;
6819         }
6820
6821         /*
6822          * Since the first EQ can have multiple CQs associated with it,
6823          * this array is used to quickly see if we have a FCP fast-path
6824          * CQ match.
6825          */
6826         phba->sli4_hba.fcp_cq_map = kzalloc((sizeof(uint16_t) *
6827                                          phba->cfg_fcp_io_channel), GFP_KERNEL);
6828         if (!phba->sli4_hba.fcp_cq_map) {
6829                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6830                                 "2545 Failed allocate memory for fast-path "
6831                                 "CQ map\n");
6832                 goto out_error;
6833         }
6834
6835         /*
6836          * Create HBA Event Queues (EQs).  The cfg_fcp_io_channel specifies
6837          * how many EQs to create.
6838          */
6839         for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) {
6840
6841                 /* Create EQs */
6842                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6843                                               phba->sli4_hba.eq_ecount);
6844                 if (!qdesc) {
6845                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6846                                         "0497 Failed allocate EQ (%d)\n", idx);
6847                         goto out_error;
6848                 }
6849                 phba->sli4_hba.hba_eq[idx] = qdesc;
6850
6851                 /* Create Fast Path FCP CQs */
6852                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6853                                               phba->sli4_hba.cq_ecount);
6854                 if (!qdesc) {
6855                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6856                                         "0499 Failed allocate fast-path FCP "
6857                                         "CQ (%d)\n", idx);
6858                         goto out_error;
6859                 }
6860                 phba->sli4_hba.fcp_cq[idx] = qdesc;
6861
6862                 /* Create Fast Path FCP WQs */
6863                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6864                                               phba->sli4_hba.wq_ecount);
6865                 if (!qdesc) {
6866                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6867                                         "0503 Failed allocate fast-path FCP "
6868                                         "WQ (%d)\n", idx);
6869                         goto out_error;
6870                 }
6871                 phba->sli4_hba.fcp_wq[idx] = qdesc;
6872         }
6873
6874
6875         /*
6876          * Create Slow Path Completion Queues (CQs)
6877          */
6878
6879         /* Create slow-path Mailbox Command Complete Queue */
6880         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6881                                       phba->sli4_hba.cq_ecount);
6882         if (!qdesc) {
6883                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6884                                 "0500 Failed allocate slow-path mailbox CQ\n");
6885                 goto out_error;
6886         }
6887         phba->sli4_hba.mbx_cq = qdesc;
6888
6889         /* Create slow-path ELS Complete Queue */
6890         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6891                                       phba->sli4_hba.cq_ecount);
6892         if (!qdesc) {
6893                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6894                                 "0501 Failed allocate slow-path ELS CQ\n");
6895                 goto out_error;
6896         }
6897         phba->sli4_hba.els_cq = qdesc;
6898
6899
6900         /*
6901          * Create Slow Path Work Queues (WQs)
6902          */
6903
6904         /* Create Mailbox Command Queue */
6905
6906         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
6907                                       phba->sli4_hba.mq_ecount);
6908         if (!qdesc) {
6909                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6910                                 "0505 Failed allocate slow-path MQ\n");
6911                 goto out_error;
6912         }
6913         phba->sli4_hba.mbx_wq = qdesc;
6914
6915         /*
6916          * Create ELS Work Queues
6917          */
6918
6919         /* Create slow-path ELS Work Queue */
6920         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6921                                       phba->sli4_hba.wq_ecount);
6922         if (!qdesc) {
6923                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6924                                 "0504 Failed allocate slow-path ELS WQ\n");
6925                 goto out_error;
6926         }
6927         phba->sli4_hba.els_wq = qdesc;
6928
6929         /*
6930          * Create Receive Queue (RQ)
6931          */
6932
6933         /* Create Receive Queue for header */
6934         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6935                                       phba->sli4_hba.rq_ecount);
6936         if (!qdesc) {
6937                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6938                                 "0506 Failed allocate receive HRQ\n");
6939                 goto out_error;
6940         }
6941         phba->sli4_hba.hdr_rq = qdesc;
6942
6943         /* Create Receive Queue for data */
6944         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6945                                       phba->sli4_hba.rq_ecount);
6946         if (!qdesc) {
6947                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6948                                 "0507 Failed allocate receive DRQ\n");
6949                 goto out_error;
6950         }
6951         phba->sli4_hba.dat_rq = qdesc;
6952
6953         return 0;
6954
6955 out_error:
6956         lpfc_sli4_queue_destroy(phba);
6957         return -ENOMEM;
6958 }
6959
6960 /**
6961  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
6962  * @phba: pointer to lpfc hba data structure.
6963  *
6964  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
6965  * operation.
6966  *
6967  * Return codes
6968  *      0 - successful
6969  *      -ENOMEM - No available memory
6970  *      -EIO - The mailbox failed to complete successfully.
6971  **/
6972 void
6973 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
6974 {
6975         int idx;
6976
6977         if (phba->sli4_hba.hba_eq != NULL) {
6978                 /* Release HBA event queue */
6979                 for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) {
6980                         if (phba->sli4_hba.hba_eq[idx] != NULL) {
6981                                 lpfc_sli4_queue_free(
6982                                         phba->sli4_hba.hba_eq[idx]);
6983                                 phba->sli4_hba.hba_eq[idx] = NULL;
6984                         }
6985                 }
6986                 kfree(phba->sli4_hba.hba_eq);
6987                 phba->sli4_hba.hba_eq = NULL;
6988         }
6989
6990         if (phba->sli4_hba.fcp_cq != NULL) {
6991                 /* Release FCP completion queue */
6992                 for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) {
6993                         if (phba->sli4_hba.fcp_cq[idx] != NULL) {
6994                                 lpfc_sli4_queue_free(
6995                                         phba->sli4_hba.fcp_cq[idx]);
6996                                 phba->sli4_hba.fcp_cq[idx] = NULL;
6997                         }
6998                 }
6999                 kfree(phba->sli4_hba.fcp_cq);
7000                 phba->sli4_hba.fcp_cq = NULL;
7001         }
7002
7003         if (phba->sli4_hba.fcp_wq != NULL) {
7004                 /* Release FCP work queue */
7005                 for (idx = 0; idx < phba->cfg_fcp_io_channel; idx++) {
7006                         if (phba->sli4_hba.fcp_wq[idx] != NULL) {
7007                                 lpfc_sli4_queue_free(
7008                                         phba->sli4_hba.fcp_wq[idx]);
7009                                 phba->sli4_hba.fcp_wq[idx] = NULL;
7010                         }
7011                 }
7012                 kfree(phba->sli4_hba.fcp_wq);
7013                 phba->sli4_hba.fcp_wq = NULL;
7014         }
7015
7016         if (phba->pci_bar0_memmap_p) {
7017                 iounmap(phba->pci_bar0_memmap_p);
7018                 phba->pci_bar0_memmap_p = NULL;
7019         }
7020         if (phba->pci_bar2_memmap_p) {
7021                 iounmap(phba->pci_bar2_memmap_p);
7022                 phba->pci_bar2_memmap_p = NULL;
7023         }
7024         if (phba->pci_bar4_memmap_p) {
7025                 iounmap(phba->pci_bar4_memmap_p);
7026                 phba->pci_bar4_memmap_p = NULL;
7027         }
7028
7029         /* Release FCP CQ mapping array */
7030         if (phba->sli4_hba.fcp_cq_map != NULL) {
7031                 kfree(phba->sli4_hba.fcp_cq_map);
7032                 phba->sli4_hba.fcp_cq_map = NULL;
7033         }
7034
7035         /* Release mailbox command work queue */
7036         if (phba->sli4_hba.mbx_wq != NULL) {
7037                 lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
7038                 phba->sli4_hba.mbx_wq = NULL;
7039         }
7040
7041         /* Release ELS work queue */
7042         if (phba->sli4_hba.els_wq != NULL) {
7043                 lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
7044                 phba->sli4_hba.els_wq = NULL;
7045         }
7046
7047         /* Release unsolicited receive queue */
7048         if (phba->sli4_hba.hdr_rq != NULL) {
7049                 lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
7050                 phba->sli4_hba.hdr_rq = NULL;
7051         }
7052         if (phba->sli4_hba.dat_rq != NULL) {
7053                 lpfc_sli4_queue_free(phba->sli4_hba.dat_rq);
7054                 phba->sli4_hba.dat_rq = NULL;
7055         }
7056
7057         /* Release ELS complete queue */
7058         if (phba->sli4_hba.els_cq != NULL) {
7059                 lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
7060                 phba->sli4_hba.els_cq = NULL;
7061         }
7062
7063         /* Release mailbox command complete queue */
7064         if (phba->sli4_hba.mbx_cq != NULL) {
7065                 lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
7066                 phba->sli4_hba.mbx_cq = NULL;
7067         }
7068
7069         return;
7070 }
7071
7072 /**
7073  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
7074  * @phba: pointer to lpfc hba data structure.
7075  *
7076  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
7077  * operation.
7078  *
7079  * Return codes
7080  *      0 - successful
7081  *      -ENOMEM - No available memory
7082  *      -EIO - The mailbox failed to complete successfully.
7083  **/
7084 int
7085 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
7086 {
7087         struct lpfc_sli *psli = &phba->sli;
7088         struct lpfc_sli_ring *pring;
7089         int rc = -ENOMEM;
7090         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
7091         int fcp_cq_index = 0;
7092         uint32_t shdr_status, shdr_add_status;
7093         union lpfc_sli4_cfg_shdr *shdr;
7094         LPFC_MBOXQ_t *mboxq;
7095         uint32_t length;
7096
7097         /* Check for dual-ULP support */
7098         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7099         if (!mboxq) {
7100                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7101                                 "3249 Unable to allocate memory for "
7102                                 "QUERY_FW_CFG mailbox command\n");
7103                 return -ENOMEM;
7104         }
7105         length = (sizeof(struct lpfc_mbx_query_fw_config) -
7106                   sizeof(struct lpfc_sli4_cfg_mhdr));
7107         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7108                          LPFC_MBOX_OPCODE_QUERY_FW_CFG,
7109                          length, LPFC_SLI4_MBX_EMBED);
7110
7111         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7112
7113         shdr = (union lpfc_sli4_cfg_shdr *)
7114                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7115         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7116         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
7117         if (shdr_status || shdr_add_status || rc) {
7118                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7119                                 "3250 QUERY_FW_CFG mailbox failed with status "
7120                                 "x%x add_status x%x, mbx status x%x\n",
7121                                 shdr_status, shdr_add_status, rc);
7122                 if (rc != MBX_TIMEOUT)
7123                         mempool_free(mboxq, phba->mbox_mem_pool);
7124                 rc = -ENXIO;
7125                 goto out_error;
7126         }
7127
7128         phba->sli4_hba.fw_func_mode =
7129                         mboxq->u.mqe.un.query_fw_cfg.rsp.function_mode;
7130         phba->sli4_hba.ulp0_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp0_mode;
7131         phba->sli4_hba.ulp1_mode = mboxq->u.mqe.un.query_fw_cfg.rsp.ulp1_mode;
7132         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7133                         "3251 QUERY_FW_CFG: func_mode:x%x, ulp0_mode:x%x, "
7134                         "ulp1_mode:x%x\n", phba->sli4_hba.fw_func_mode,
7135                         phba->sli4_hba.ulp0_mode, phba->sli4_hba.ulp1_mode);
7136
7137         if (rc != MBX_TIMEOUT)
7138                 mempool_free(mboxq, phba->mbox_mem_pool);
7139
7140         /*
7141          * Set up HBA Event Queues (EQs)
7142          */
7143
7144         /* Set up HBA event queue */
7145         if (phba->cfg_fcp_io_channel && !phba->sli4_hba.hba_eq) {
7146                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7147                                 "3147 Fast-path EQs not allocated\n");
7148                 rc = -ENOMEM;
7149                 goto out_error;
7150         }
7151         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_io_channel; fcp_eqidx++) {
7152                 if (!phba->sli4_hba.hba_eq[fcp_eqidx]) {
7153                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7154                                         "0522 Fast-path EQ (%d) not "
7155                                         "allocated\n", fcp_eqidx);
7156                         rc = -ENOMEM;
7157                         goto out_destroy_hba_eq;
7158                 }
7159                 rc = lpfc_eq_create(phba, phba->sli4_hba.hba_eq[fcp_eqidx],
7160                          (phba->cfg_fcp_imax / phba->cfg_fcp_io_channel));
7161                 if (rc) {
7162                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7163                                         "0523 Failed setup of fast-path EQ "
7164                                         "(%d), rc = 0x%x\n", fcp_eqidx, rc);
7165                         goto out_destroy_hba_eq;
7166                 }
7167                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7168                                 "2584 HBA EQ setup: "
7169                                 "queue[%d]-id=%d\n", fcp_eqidx,
7170                                 phba->sli4_hba.hba_eq[fcp_eqidx]->queue_id);
7171         }
7172
7173         /* Set up fast-path FCP Response Complete Queue */
7174         if (!phba->sli4_hba.fcp_cq) {
7175                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7176                                 "3148 Fast-path FCP CQ array not "
7177                                 "allocated\n");
7178                 rc = -ENOMEM;
7179                 goto out_destroy_hba_eq;
7180         }
7181
7182         for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_io_channel; fcp_cqidx++) {
7183                 if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) {
7184                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7185                                         "0526 Fast-path FCP CQ (%d) not "
7186                                         "allocated\n", fcp_cqidx);
7187                         rc = -ENOMEM;
7188                         goto out_destroy_fcp_cq;
7189                 }
7190                 rc = lpfc_cq_create(phba, phba->sli4_hba.fcp_cq[fcp_cqidx],
7191                         phba->sli4_hba.hba_eq[fcp_cqidx], LPFC_WCQ, LPFC_FCP);
7192                 if (rc) {
7193                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7194                                         "0527 Failed setup of fast-path FCP "
7195                                         "CQ (%d), rc = 0x%x\n", fcp_cqidx, rc);
7196                         goto out_destroy_fcp_cq;
7197                 }
7198
7199                 /* Setup fcp_cq_map for fast lookup */
7200                 phba->sli4_hba.fcp_cq_map[fcp_cqidx] =
7201                                 phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id;
7202
7203                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7204                                 "2588 FCP CQ setup: cq[%d]-id=%d, "
7205                                 "parent seq[%d]-id=%d\n",
7206                                 fcp_cqidx,
7207                                 phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id,
7208                                 fcp_cqidx,
7209                                 phba->sli4_hba.hba_eq[fcp_cqidx]->queue_id);
7210         }
7211
7212         /* Set up fast-path FCP Work Queue */
7213         if (!phba->sli4_hba.fcp_wq) {
7214                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7215                                 "3149 Fast-path FCP WQ array not "
7216                                 "allocated\n");
7217                 rc = -ENOMEM;
7218                 goto out_destroy_fcp_cq;
7219         }
7220
7221         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_io_channel; fcp_wqidx++) {
7222                 if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) {
7223                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7224                                         "0534 Fast-path FCP WQ (%d) not "
7225                                         "allocated\n", fcp_wqidx);
7226                         rc = -ENOMEM;
7227                         goto out_destroy_fcp_wq;
7228                 }
7229                 rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx],
7230                                     phba->sli4_hba.fcp_cq[fcp_wqidx],
7231                                     LPFC_FCP);
7232                 if (rc) {
7233                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7234                                         "0535 Failed setup of fast-path FCP "
7235                                         "WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
7236                         goto out_destroy_fcp_wq;
7237                 }
7238
7239                 /* Bind this WQ to the next FCP ring */
7240                 pring = &psli->ring[MAX_SLI3_CONFIGURED_RINGS + fcp_wqidx];
7241                 pring->sli.sli4.wqp = (void *)phba->sli4_hba.fcp_wq[fcp_wqidx];
7242                 phba->sli4_hba.fcp_cq[fcp_wqidx]->pring = pring;
7243
7244                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7245                                 "2591 FCP WQ setup: wq[%d]-id=%d, "
7246                                 "parent cq[%d]-id=%d\n",
7247                                 fcp_wqidx,
7248                                 phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id,
7249                                 fcp_cq_index,
7250                                 phba->sli4_hba.fcp_cq[fcp_wqidx]->queue_id);
7251         }
7252         /*
7253          * Set up Complete Queues (CQs)
7254          */
7255
7256         /* Set up slow-path MBOX Complete Queue as the first CQ */
7257         if (!phba->sli4_hba.mbx_cq) {
7258                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7259                                 "0528 Mailbox CQ not allocated\n");
7260                 rc = -ENOMEM;
7261                 goto out_destroy_fcp_wq;
7262         }
7263         rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq,
7264                         phba->sli4_hba.hba_eq[0], LPFC_MCQ, LPFC_MBOX);
7265         if (rc) {
7266                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7267                                 "0529 Failed setup of slow-path mailbox CQ: "
7268                                 "rc = 0x%x\n", rc);
7269                 goto out_destroy_fcp_wq;
7270         }
7271         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7272                         "2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n",
7273                         phba->sli4_hba.mbx_cq->queue_id,
7274                         phba->sli4_hba.hba_eq[0]->queue_id);
7275
7276         /* Set up slow-path ELS Complete Queue */
7277         if (!phba->sli4_hba.els_cq) {
7278                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7279                                 "0530 ELS CQ not allocated\n");
7280                 rc = -ENOMEM;
7281                 goto out_destroy_mbx_cq;
7282         }
7283         rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq,
7284                         phba->sli4_hba.hba_eq[0], LPFC_WCQ, LPFC_ELS);
7285         if (rc) {
7286                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7287                                 "0531 Failed setup of slow-path ELS CQ: "
7288                                 "rc = 0x%x\n", rc);
7289                 goto out_destroy_mbx_cq;
7290         }
7291         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7292                         "2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n",
7293                         phba->sli4_hba.els_cq->queue_id,
7294                         phba->sli4_hba.hba_eq[0]->queue_id);
7295
7296         /*
7297          * Set up all the Work Queues (WQs)
7298          */
7299
7300         /* Set up Mailbox Command Queue */
7301         if (!phba->sli4_hba.mbx_wq) {
7302                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7303                                 "0538 Slow-path MQ not allocated\n");
7304                 rc = -ENOMEM;
7305                 goto out_destroy_els_cq;
7306         }
7307         rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq,
7308                             phba->sli4_hba.mbx_cq, LPFC_MBOX);
7309         if (rc) {
7310                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7311                                 "0539 Failed setup of slow-path MQ: "
7312                                 "rc = 0x%x\n", rc);
7313                 goto out_destroy_els_cq;
7314         }
7315         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7316                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
7317                         phba->sli4_hba.mbx_wq->queue_id,
7318                         phba->sli4_hba.mbx_cq->queue_id);
7319
7320         /* Set up slow-path ELS Work Queue */
7321         if (!phba->sli4_hba.els_wq) {
7322                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7323                                 "0536 Slow-path ELS WQ not allocated\n");
7324                 rc = -ENOMEM;
7325                 goto out_destroy_mbx_wq;
7326         }
7327         rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq,
7328                             phba->sli4_hba.els_cq, LPFC_ELS);
7329         if (rc) {
7330                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7331                                 "0537 Failed setup of slow-path ELS WQ: "
7332                                 "rc = 0x%x\n", rc);
7333                 goto out_destroy_mbx_wq;
7334         }
7335
7336         /* Bind this WQ to the ELS ring */
7337         pring = &psli->ring[LPFC_ELS_RING];
7338         pring->sli.sli4.wqp = (void *)phba->sli4_hba.els_wq;
7339         phba->sli4_hba.els_cq->pring = pring;
7340
7341         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7342                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
7343                         phba->sli4_hba.els_wq->queue_id,
7344                         phba->sli4_hba.els_cq->queue_id);
7345
7346         /*
7347          * Create Receive Queue (RQ)
7348          */
7349         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
7350                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7351                                 "0540 Receive Queue not allocated\n");
7352                 rc = -ENOMEM;
7353                 goto out_destroy_els_wq;
7354         }
7355
7356         lpfc_rq_adjust_repost(phba, phba->sli4_hba.hdr_rq, LPFC_ELS_HBQ);
7357         lpfc_rq_adjust_repost(phba, phba->sli4_hba.dat_rq, LPFC_ELS_HBQ);
7358
7359         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
7360                             phba->sli4_hba.els_cq, LPFC_USOL);
7361         if (rc) {
7362                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7363                                 "0541 Failed setup of Receive Queue: "
7364                                 "rc = 0x%x\n", rc);
7365                 goto out_destroy_fcp_wq;
7366         }
7367
7368         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7369                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
7370                         "parent cq-id=%d\n",
7371                         phba->sli4_hba.hdr_rq->queue_id,
7372                         phba->sli4_hba.dat_rq->queue_id,
7373                         phba->sli4_hba.els_cq->queue_id);
7374         return 0;
7375
7376 out_destroy_els_wq:
7377         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
7378 out_destroy_mbx_wq:
7379         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
7380 out_destroy_els_cq:
7381         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
7382 out_destroy_mbx_cq:
7383         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
7384 out_destroy_fcp_wq:
7385         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--)
7386                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]);
7387 out_destroy_fcp_cq:
7388         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--)
7389                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]);
7390 out_destroy_hba_eq:
7391         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--)
7392                 lpfc_eq_destroy(phba, phba->sli4_hba.hba_eq[fcp_eqidx]);
7393 out_error:
7394         return rc;
7395 }
7396
7397 /**
7398  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
7399  * @phba: pointer to lpfc hba data structure.
7400  *
7401  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
7402  * operation.
7403  *
7404  * Return codes
7405  *      0 - successful
7406  *      -ENOMEM - No available memory
7407  *      -EIO - The mailbox failed to complete successfully.
7408  **/
7409 void
7410 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
7411 {
7412         int fcp_qidx;
7413
7414         /* Unset mailbox command work queue */
7415         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
7416         /* Unset ELS work queue */
7417         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
7418         /* Unset unsolicited receive queue */
7419         lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq);
7420         /* Unset FCP work queue */
7421         if (phba->sli4_hba.fcp_wq) {
7422                 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_io_channel;
7423                      fcp_qidx++)
7424                         lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]);
7425         }
7426         /* Unset mailbox command complete queue */
7427         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
7428         /* Unset ELS complete queue */
7429         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
7430         /* Unset FCP response complete queue */
7431         if (phba->sli4_hba.fcp_cq) {
7432                 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_io_channel;
7433                      fcp_qidx++)
7434                         lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]);
7435         }
7436         /* Unset fast-path event queue */
7437         if (phba->sli4_hba.hba_eq) {
7438                 for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_io_channel;
7439                      fcp_qidx++)
7440                         lpfc_eq_destroy(phba, phba->sli4_hba.hba_eq[fcp_qidx]);
7441         }
7442 }
7443
7444 /**
7445  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
7446  * @phba: pointer to lpfc hba data structure.
7447  *
7448  * This routine is invoked to allocate and set up a pool of completion queue
7449  * events. The body of the completion queue event is a completion queue entry
7450  * CQE. For now, this pool is used for the interrupt service routine to queue
7451  * the following HBA completion queue events for the worker thread to process:
7452  *   - Mailbox asynchronous events
7453  *   - Receive queue completion unsolicited events
7454  * Later, this can be used for all the slow-path events.
7455  *
7456  * Return codes
7457  *      0 - successful
7458  *      -ENOMEM - No available memory
7459  **/
7460 static int
7461 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
7462 {
7463         struct lpfc_cq_event *cq_event;
7464         int i;
7465
7466         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
7467                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
7468                 if (!cq_event)
7469                         goto out_pool_create_fail;
7470                 list_add_tail(&cq_event->list,
7471                               &phba->sli4_hba.sp_cqe_event_pool);
7472         }
7473         return 0;
7474
7475 out_pool_create_fail:
7476         lpfc_sli4_cq_event_pool_destroy(phba);
7477         return -ENOMEM;
7478 }
7479
7480 /**
7481  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
7482  * @phba: pointer to lpfc hba data structure.
7483  *
7484  * This routine is invoked to free the pool of completion queue events at
7485  * driver unload time. Note that, it is the responsibility of the driver
7486  * cleanup routine to free all the outstanding completion-queue events
7487  * allocated from this pool back into the pool before invoking this routine
7488  * to destroy the pool.
7489  **/
7490 static void
7491 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
7492 {
7493         struct lpfc_cq_event *cq_event, *next_cq_event;
7494
7495         list_for_each_entry_safe(cq_event, next_cq_event,
7496                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
7497                 list_del(&cq_event->list);
7498                 kfree(cq_event);
7499         }
7500 }
7501
7502 /**
7503  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
7504  * @phba: pointer to lpfc hba data structure.
7505  *
7506  * This routine is the lock free version of the API invoked to allocate a
7507  * completion-queue event from the free pool.
7508  *
7509  * Return: Pointer to the newly allocated completion-queue event if successful
7510  *         NULL otherwise.
7511  **/
7512 struct lpfc_cq_event *
7513 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
7514 {
7515         struct lpfc_cq_event *cq_event = NULL;
7516
7517         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
7518                          struct lpfc_cq_event, list);
7519         return cq_event;
7520 }
7521
7522 /**
7523  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
7524  * @phba: pointer to lpfc hba data structure.
7525  *
7526  * This routine is the lock version of the API invoked to allocate a
7527  * completion-queue event from the free pool.
7528  *
7529  * Return: Pointer to the newly allocated completion-queue event if successful
7530  *         NULL otherwise.
7531  **/
7532 struct lpfc_cq_event *
7533 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
7534 {
7535         struct lpfc_cq_event *cq_event;
7536         unsigned long iflags;
7537
7538         spin_lock_irqsave(&phba->hbalock, iflags);
7539         cq_event = __lpfc_sli4_cq_event_alloc(phba);
7540         spin_unlock_irqrestore(&phba->hbalock, iflags);
7541         return cq_event;
7542 }
7543
7544 /**
7545  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
7546  * @phba: pointer to lpfc hba data structure.
7547  * @cq_event: pointer to the completion queue event to be freed.
7548  *
7549  * This routine is the lock free version of the API invoked to release a
7550  * completion-queue event back into the free pool.
7551  **/
7552 void
7553 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
7554                              struct lpfc_cq_event *cq_event)
7555 {
7556         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
7557 }
7558
7559 /**
7560  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
7561  * @phba: pointer to lpfc hba data structure.
7562  * @cq_event: pointer to the completion queue event to be freed.
7563  *
7564  * This routine is the lock version of the API invoked to release a
7565  * completion-queue event back into the free pool.
7566  **/
7567 void
7568 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
7569                            struct lpfc_cq_event *cq_event)
7570 {
7571         unsigned long iflags;
7572         spin_lock_irqsave(&phba->hbalock, iflags);
7573         __lpfc_sli4_cq_event_release(phba, cq_event);
7574         spin_unlock_irqrestore(&phba->hbalock, iflags);
7575 }
7576
7577 /**
7578  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
7579  * @phba: pointer to lpfc hba data structure.
7580  *
7581  * This routine is to free all the pending completion-queue events to the
7582  * back into the free pool for device reset.
7583  **/
7584 static void
7585 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
7586 {
7587         LIST_HEAD(cqelist);
7588         struct lpfc_cq_event *cqe;
7589         unsigned long iflags;
7590
7591         /* Retrieve all the pending WCQEs from pending WCQE lists */
7592         spin_lock_irqsave(&phba->hbalock, iflags);
7593         /* Pending FCP XRI abort events */
7594         list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
7595                          &cqelist);
7596         /* Pending ELS XRI abort events */
7597         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
7598                          &cqelist);
7599         /* Pending asynnc events */
7600         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
7601                          &cqelist);
7602         spin_unlock_irqrestore(&phba->hbalock, iflags);
7603
7604         while (!list_empty(&cqelist)) {
7605                 list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
7606                 lpfc_sli4_cq_event_release(phba, cqe);
7607         }
7608 }
7609
7610 /**
7611  * lpfc_pci_function_reset - Reset pci function.
7612  * @phba: pointer to lpfc hba data structure.
7613  *
7614  * This routine is invoked to request a PCI function reset. It will destroys
7615  * all resources assigned to the PCI function which originates this request.
7616  *
7617  * Return codes
7618  *      0 - successful
7619  *      -ENOMEM - No available memory
7620  *      -EIO - The mailbox failed to complete successfully.
7621  **/
7622 int
7623 lpfc_pci_function_reset(struct lpfc_hba *phba)
7624 {
7625         LPFC_MBOXQ_t *mboxq;
7626         uint32_t rc = 0, if_type;
7627         uint32_t shdr_status, shdr_add_status;
7628         uint32_t rdy_chk, num_resets = 0, reset_again = 0;
7629         union lpfc_sli4_cfg_shdr *shdr;
7630         struct lpfc_register reg_data;
7631         uint16_t devid;
7632
7633         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7634         switch (if_type) {
7635         case LPFC_SLI_INTF_IF_TYPE_0:
7636                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
7637                                                        GFP_KERNEL);
7638                 if (!mboxq) {
7639                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7640                                         "0494 Unable to allocate memory for "
7641                                         "issuing SLI_FUNCTION_RESET mailbox "
7642                                         "command\n");
7643                         return -ENOMEM;
7644                 }
7645
7646                 /* Setup PCI function reset mailbox-ioctl command */
7647                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7648                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
7649                                  LPFC_SLI4_MBX_EMBED);
7650                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7651                 shdr = (union lpfc_sli4_cfg_shdr *)
7652                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7653                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7654                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7655                                          &shdr->response);
7656                 if (rc != MBX_TIMEOUT)
7657                         mempool_free(mboxq, phba->mbox_mem_pool);
7658                 if (shdr_status || shdr_add_status || rc) {
7659                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7660                                         "0495 SLI_FUNCTION_RESET mailbox "
7661                                         "failed with status x%x add_status x%x,"
7662                                         " mbx status x%x\n",
7663                                         shdr_status, shdr_add_status, rc);
7664                         rc = -ENXIO;
7665                 }
7666                 break;
7667         case LPFC_SLI_INTF_IF_TYPE_2:
7668                 for (num_resets = 0;
7669                      num_resets < MAX_IF_TYPE_2_RESETS;
7670                      num_resets++) {
7671                         reg_data.word0 = 0;
7672                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
7673                                LPFC_SLIPORT_LITTLE_ENDIAN);
7674                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
7675                                LPFC_SLIPORT_INIT_PORT);
7676                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
7677                                CTRLregaddr);
7678                         /* flush */
7679                         pci_read_config_word(phba->pcidev,
7680                                              PCI_DEVICE_ID, &devid);
7681                         /*
7682                          * Poll the Port Status Register and wait for RDY for
7683                          * up to 10 seconds.  If the port doesn't respond, treat
7684                          * it as an error.  If the port responds with RN, start
7685                          * the loop again.
7686                          */
7687                         for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) {
7688                                 msleep(10);
7689                                 if (lpfc_readl(phba->sli4_hba.u.if_type2.
7690                                               STATUSregaddr, &reg_data.word0)) {
7691                                         rc = -ENODEV;
7692                                         goto out;
7693                                 }
7694                                 if (bf_get(lpfc_sliport_status_rn, &reg_data))
7695                                         reset_again++;
7696                                 if (bf_get(lpfc_sliport_status_rdy, &reg_data))
7697                                         break;
7698                         }
7699
7700                         /*
7701                          * If the port responds to the init request with
7702                          * reset needed, delay for a bit and restart the loop.
7703                          */
7704                         if (reset_again && (rdy_chk < 1000)) {
7705                                 msleep(10);
7706                                 reset_again = 0;
7707                                 continue;
7708                         }
7709
7710                         /* Detect any port errors. */
7711                         if ((bf_get(lpfc_sliport_status_err, &reg_data)) ||
7712                             (rdy_chk >= 1000)) {
7713                                 phba->work_status[0] = readl(
7714                                         phba->sli4_hba.u.if_type2.ERR1regaddr);
7715                                 phba->work_status[1] = readl(
7716                                         phba->sli4_hba.u.if_type2.ERR2regaddr);
7717                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7718                                         "2890 Port error detected during port "
7719                                         "reset(%d): wait_tmo:%d ms, "
7720                                         "port status reg 0x%x, "
7721                                         "error 1=0x%x, error 2=0x%x\n",
7722                                         num_resets, rdy_chk*10,
7723                                         reg_data.word0,
7724                                         phba->work_status[0],
7725                                         phba->work_status[1]);
7726                                 rc = -ENODEV;
7727                         }
7728
7729                         /*
7730                          * Terminate the outer loop provided the Port indicated
7731                          * ready within 10 seconds.
7732                          */
7733                         if (rdy_chk < 1000)
7734                                 break;
7735                 }
7736                 /* delay driver action following IF_TYPE_2 function reset */
7737                 msleep(100);
7738                 break;
7739         case LPFC_SLI_INTF_IF_TYPE_1:
7740         default:
7741                 break;
7742         }
7743
7744 out:
7745         /* Catch the not-ready port failure after a port reset. */
7746         if (num_resets >= MAX_IF_TYPE_2_RESETS)
7747                 rc = -ENODEV;
7748
7749         return rc;
7750 }
7751
7752 /**
7753  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
7754  * @phba: pointer to lpfc hba data structure.
7755  *
7756  * This routine is invoked to set up the PCI device memory space for device
7757  * with SLI-4 interface spec.
7758  *
7759  * Return codes
7760  *      0 - successful
7761  *      other values - error
7762  **/
7763 static int
7764 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
7765 {
7766         struct pci_dev *pdev;
7767         unsigned long bar0map_len, bar1map_len, bar2map_len;
7768         int error = -ENODEV;
7769         uint32_t if_type;
7770
7771         /* Obtain PCI device reference */
7772         if (!phba->pcidev)
7773                 return error;
7774         else
7775                 pdev = phba->pcidev;
7776
7777         /* Set the device DMA mask size */
7778         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
7779          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
7780                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
7781                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
7782                         return error;
7783                 }
7784         }
7785
7786         /*
7787          * The BARs and register set definitions and offset locations are
7788          * dependent on the if_type.
7789          */
7790         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
7791                                   &phba->sli4_hba.sli_intf.word0)) {
7792                 return error;
7793         }
7794
7795         /* There is no SLI3 failback for SLI4 devices. */
7796         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
7797             LPFC_SLI_INTF_VALID) {
7798                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7799                                 "2894 SLI_INTF reg contents invalid "
7800                                 "sli_intf reg 0x%x\n",
7801                                 phba->sli4_hba.sli_intf.word0);
7802                 return error;
7803         }
7804
7805         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7806         /*
7807          * Get the bus address of SLI4 device Bar regions and the
7808          * number of bytes required by each mapping. The mapping of the
7809          * particular PCI BARs regions is dependent on the type of
7810          * SLI4 device.
7811          */
7812         if (pci_resource_start(pdev, 0)) {
7813                 phba->pci_bar0_map = pci_resource_start(pdev, 0);
7814                 bar0map_len = pci_resource_len(pdev, 0);
7815
7816                 /*
7817                  * Map SLI4 PCI Config Space Register base to a kernel virtual
7818                  * addr
7819                  */
7820                 phba->sli4_hba.conf_regs_memmap_p =
7821                         ioremap(phba->pci_bar0_map, bar0map_len);
7822                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7823                         dev_printk(KERN_ERR, &pdev->dev,
7824                                    "ioremap failed for SLI4 PCI config "
7825                                    "registers.\n");
7826                         goto out;
7827                 }
7828                 /* Set up BAR0 PCI config space register memory map */
7829                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7830         } else {
7831                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
7832                 bar0map_len = pci_resource_len(pdev, 1);
7833                 if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
7834                         dev_printk(KERN_ERR, &pdev->dev,
7835                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
7836                         goto out;
7837                 }
7838                 phba->sli4_hba.conf_regs_memmap_p =
7839                                 ioremap(phba->pci_bar0_map, bar0map_len);
7840                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7841                         dev_printk(KERN_ERR, &pdev->dev,
7842                                 "ioremap failed for SLI4 PCI config "
7843                                 "registers.\n");
7844                                 goto out;
7845                 }
7846                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7847         }
7848
7849         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7850             (pci_resource_start(pdev, 2))) {
7851                 /*
7852                  * Map SLI4 if type 0 HBA Control Register base to a kernel
7853                  * virtual address and setup the registers.
7854                  */
7855                 phba->pci_bar1_map = pci_resource_start(pdev, 2);
7856                 bar1map_len = pci_resource_len(pdev, 2);
7857                 phba->sli4_hba.ctrl_regs_memmap_p =
7858                                 ioremap(phba->pci_bar1_map, bar1map_len);
7859                 if (!phba->sli4_hba.ctrl_regs_memmap_p) {
7860                         dev_printk(KERN_ERR, &pdev->dev,
7861                            "ioremap failed for SLI4 HBA control registers.\n");
7862                         goto out_iounmap_conf;
7863                 }
7864                 lpfc_sli4_bar1_register_memmap(phba);
7865         }
7866
7867         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7868             (pci_resource_start(pdev, 4))) {
7869                 /*
7870                  * Map SLI4 if type 0 HBA Doorbell Register base to a kernel
7871                  * virtual address and setup the registers.
7872                  */
7873                 phba->pci_bar2_map = pci_resource_start(pdev, 4);
7874                 bar2map_len = pci_resource_len(pdev, 4);
7875                 phba->sli4_hba.drbl_regs_memmap_p =
7876                                 ioremap(phba->pci_bar2_map, bar2map_len);
7877                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
7878                         dev_printk(KERN_ERR, &pdev->dev,
7879                            "ioremap failed for SLI4 HBA doorbell registers.\n");
7880                         goto out_iounmap_ctrl;
7881                 }
7882                 error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
7883                 if (error)
7884                         goto out_iounmap_all;
7885         }
7886
7887         return 0;
7888
7889 out_iounmap_all:
7890         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7891 out_iounmap_ctrl:
7892         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7893 out_iounmap_conf:
7894         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7895 out:
7896         return error;
7897 }
7898
7899 /**
7900  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
7901  * @phba: pointer to lpfc hba data structure.
7902  *
7903  * This routine is invoked to unset the PCI device memory space for device
7904  * with SLI-4 interface spec.
7905  **/
7906 static void
7907 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
7908 {
7909         uint32_t if_type;
7910         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7911
7912         switch (if_type) {
7913         case LPFC_SLI_INTF_IF_TYPE_0:
7914                 iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7915                 iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7916                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
7917                 break;
7918         case LPFC_SLI_INTF_IF_TYPE_2:
7919                 iounmap(phba->sli4_hba.conf_regs_memmap_p);
7920                 break;
7921         case LPFC_SLI_INTF_IF_TYPE_1:
7922         default:
7923                 dev_printk(KERN_ERR, &phba->pcidev->dev,
7924                            "FATAL - unsupported SLI4 interface type - %d\n",
7925                            if_type);
7926                 break;
7927         }
7928 }
7929
7930 /**
7931  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
7932  * @phba: pointer to lpfc hba data structure.
7933  *
7934  * This routine is invoked to enable the MSI-X interrupt vectors to device
7935  * with SLI-3 interface specs. The kernel function pci_enable_msix() is
7936  * called to enable the MSI-X vectors. Note that pci_enable_msix(), once
7937  * invoked, enables either all or nothing, depending on the current
7938  * availability of PCI vector resources. The device driver is responsible
7939  * for calling the individual request_irq() to register each MSI-X vector
7940  * with a interrupt handler, which is done in this function. Note that
7941  * later when device is unloading, the driver should always call free_irq()
7942  * on all MSI-X vectors it has done request_irq() on before calling
7943  * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
7944  * will be left with MSI-X enabled and leaks its vectors.
7945  *
7946  * Return codes
7947  *   0 - successful
7948  *   other values - error
7949  **/
7950 static int
7951 lpfc_sli_enable_msix(struct lpfc_hba *phba)
7952 {
7953         int rc, i;
7954         LPFC_MBOXQ_t *pmb;
7955
7956         /* Set up MSI-X multi-message vectors */
7957         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7958                 phba->msix_entries[i].entry = i;
7959
7960         /* Configure MSI-X capability structure */
7961         rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
7962                                 ARRAY_SIZE(phba->msix_entries));
7963         if (rc) {
7964                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7965                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
7966                 goto msi_fail_out;
7967         }
7968         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7969                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7970                                 "0477 MSI-X entry[%d]: vector=x%x "
7971                                 "message=%d\n", i,
7972                                 phba->msix_entries[i].vector,
7973                                 phba->msix_entries[i].entry);
7974         /*
7975          * Assign MSI-X vectors to interrupt handlers
7976          */
7977
7978         /* vector-0 is associated to slow-path handler */
7979         rc = request_irq(phba->msix_entries[0].vector,
7980                          &lpfc_sli_sp_intr_handler, IRQF_SHARED,
7981                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
7982         if (rc) {
7983                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7984                                 "0421 MSI-X slow-path request_irq failed "
7985                                 "(%d)\n", rc);
7986                 goto msi_fail_out;
7987         }
7988
7989         /* vector-1 is associated to fast-path handler */
7990         rc = request_irq(phba->msix_entries[1].vector,
7991                          &lpfc_sli_fp_intr_handler, IRQF_SHARED,
7992                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
7993
7994         if (rc) {
7995                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7996                                 "0429 MSI-X fast-path request_irq failed "
7997                                 "(%d)\n", rc);
7998                 goto irq_fail_out;
7999         }
8000
8001         /*
8002          * Configure HBA MSI-X attention conditions to messages
8003          */
8004         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
8005
8006         if (!pmb) {
8007                 rc = -ENOMEM;
8008                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8009                                 "0474 Unable to allocate memory for issuing "
8010                                 "MBOX_CONFIG_MSI command\n");
8011                 goto mem_fail_out;
8012         }
8013         rc = lpfc_config_msi(phba, pmb);
8014         if (rc)
8015                 goto mbx_fail_out;
8016         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
8017         if (rc != MBX_SUCCESS) {
8018                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
8019                                 "0351 Config MSI mailbox command failed, "
8020                                 "mbxCmd x%x, mbxStatus x%x\n",
8021                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
8022                 goto mbx_fail_out;
8023         }
8024
8025         /* Free memory allocated for mailbox command */
8026         mempool_free(pmb, phba->mbox_mem_pool);
8027         return rc;
8028
8029 mbx_fail_out:
8030         /* Free memory allocated for mailbox command */
8031         mempool_free(pmb, phba->mbox_mem_pool);
8032
8033 mem_fail_out:
8034         /* free the irq already requested */
8035         free_irq(phba->msix_entries[1].vector, phba);
8036
8037 irq_fail_out:
8038         /* free the irq already requested */
8039         free_irq(phba->msix_entries[0].vector, phba);
8040
8041 msi_fail_out:
8042         /* Unconfigure MSI-X capability structure */
8043         pci_disable_msix(phba->pcidev);
8044         return rc;
8045 }
8046
8047 /**
8048  * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device.
8049  * @phba: pointer to lpfc hba data structure.
8050  *
8051  * This routine is invoked to release the MSI-X vectors and then disable the
8052  * MSI-X interrupt mode to device with SLI-3 interface spec.
8053  **/
8054 static void
8055 lpfc_sli_disable_msix(struct lpfc_hba *phba)
8056 {
8057         int i;
8058
8059         /* Free up MSI-X multi-message vectors */
8060         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
8061                 free_irq(phba->msix_entries[i].vector, phba);
8062         /* Disable MSI-X */
8063         pci_disable_msix(phba->pcidev);
8064
8065         return;
8066 }
8067
8068 /**
8069  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
8070  * @phba: pointer to lpfc hba data structure.
8071  *
8072  * This routine is invoked to enable the MSI interrupt mode to device with
8073  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
8074  * enable the MSI vector. The device driver is responsible for calling the
8075  * request_irq() to register MSI vector with a interrupt the handler, which
8076  * is done in this function.
8077  *
8078  * Return codes
8079  *      0 - successful
8080  *      other values - error
8081  */
8082 static int
8083 lpfc_sli_enable_msi(struct lpfc_hba *phba)
8084 {
8085         int rc;
8086
8087         rc = pci_enable_msi(phba->pcidev);
8088         if (!rc)
8089                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8090                                 "0462 PCI enable MSI mode success.\n");
8091         else {
8092                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8093                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
8094                 return rc;
8095         }
8096
8097         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
8098                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
8099         if (rc) {
8100                 pci_disable_msi(phba->pcidev);
8101                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8102                                 "0478 MSI request_irq failed (%d)\n", rc);
8103         }
8104         return rc;
8105 }
8106
8107 /**
8108  * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device.
8109  * @phba: pointer to lpfc hba data structure.
8110  *
8111  * This routine is invoked to disable the MSI interrupt mode to device with
8112  * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has
8113  * done request_irq() on before calling pci_disable_msi(). Failure to do so
8114  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
8115  * its vector.
8116  */
8117 static void
8118 lpfc_sli_disable_msi(struct lpfc_hba *phba)
8119 {
8120         free_irq(phba->pcidev->irq, phba);
8121         pci_disable_msi(phba->pcidev);
8122         return;
8123 }
8124
8125 /**
8126  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
8127  * @phba: pointer to lpfc hba data structure.
8128  *
8129  * This routine is invoked to enable device interrupt and associate driver's
8130  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
8131  * spec. Depends on the interrupt mode configured to the driver, the driver
8132  * will try to fallback from the configured interrupt mode to an interrupt
8133  * mode which is supported by the platform, kernel, and device in the order
8134  * of:
8135  * MSI-X -> MSI -> IRQ.
8136  *
8137  * Return codes
8138  *   0 - successful
8139  *   other values - error
8140  **/
8141 static uint32_t
8142 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
8143 {
8144         uint32_t intr_mode = LPFC_INTR_ERROR;
8145         int retval;
8146
8147         if (cfg_mode == 2) {
8148                 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
8149                 retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
8150                 if (!retval) {
8151                         /* Now, try to enable MSI-X interrupt mode */
8152                         retval = lpfc_sli_enable_msix(phba);
8153                         if (!retval) {
8154                                 /* Indicate initialization to MSI-X mode */
8155                                 phba->intr_type = MSIX;
8156                                 intr_mode = 2;
8157                         }
8158                 }
8159         }
8160
8161         /* Fallback to MSI if MSI-X initialization failed */
8162         if (cfg_mode >= 1 && phba->intr_type == NONE) {
8163                 retval = lpfc_sli_enable_msi(phba);
8164                 if (!retval) {
8165                         /* Indicate initialization to MSI mode */
8166                         phba->intr_type = MSI;
8167                         intr_mode = 1;
8168                 }
8169         }
8170
8171         /* Fallback to INTx if both MSI-X/MSI initalization failed */
8172         if (phba->intr_type == NONE) {
8173                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
8174                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
8175                 if (!retval) {
8176                         /* Indicate initialization to INTx mode */
8177                         phba->intr_type = INTx;
8178                         intr_mode = 0;
8179                 }
8180         }
8181         return intr_mode;
8182 }
8183
8184 /**
8185  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
8186  * @phba: pointer to lpfc hba data structure.
8187  *
8188  * This routine is invoked to disable device interrupt and disassociate the
8189  * driver's interrupt handler(s) from interrupt vector(s) to device with
8190  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
8191  * release the interrupt vector(s) for the message signaled interrupt.
8192  **/
8193 static void
8194 lpfc_sli_disable_intr(struct lpfc_hba *phba)
8195 {
8196         /* Disable the currently initialized interrupt mode */
8197         if (phba->intr_type == MSIX)
8198                 lpfc_sli_disable_msix(phba);
8199         else if (phba->intr_type == MSI)
8200                 lpfc_sli_disable_msi(phba);
8201         else if (phba->intr_type == INTx)
8202                 free_irq(phba->pcidev->irq, phba);
8203
8204         /* Reset interrupt management states */
8205         phba->intr_type = NONE;
8206         phba->sli.slistat.sli_intr = 0;
8207
8208         return;
8209 }
8210
8211 /**
8212  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
8213  * @phba: pointer to lpfc hba data structure.
8214  *
8215  * This routine is invoked to enable the MSI-X interrupt vectors to device
8216  * with SLI-4 interface spec. The kernel function pci_enable_msix() is called
8217  * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked,
8218  * enables either all or nothing, depending on the current availability of
8219  * PCI vector resources. The device driver is responsible for calling the
8220  * individual request_irq() to register each MSI-X vector with a interrupt
8221  * handler, which is done in this function. Note that later when device is
8222  * unloading, the driver should always call free_irq() on all MSI-X vectors
8223  * it has done request_irq() on before calling pci_disable_msix(). Failure
8224  * to do so results in a BUG_ON() and a device will be left with MSI-X
8225  * enabled and leaks its vectors.
8226  *
8227  * Return codes
8228  * 0 - successful
8229  * other values - error
8230  **/
8231 static int
8232 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
8233 {
8234         int vectors, rc, index;
8235
8236         /* Set up MSI-X multi-message vectors */
8237         for (index = 0; index < phba->cfg_fcp_io_channel; index++)
8238                 phba->sli4_hba.msix_entries[index].entry = index;
8239
8240         /* Configure MSI-X capability structure */
8241         vectors = phba->cfg_fcp_io_channel;
8242 enable_msix_vectors:
8243         rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
8244                              vectors);
8245         if (rc > 1) {
8246                 vectors = rc;
8247                 goto enable_msix_vectors;
8248         } else if (rc) {
8249                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8250                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
8251                 goto msi_fail_out;
8252         }
8253
8254         /* Log MSI-X vector assignment */
8255         for (index = 0; index < vectors; index++)
8256                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8257                                 "0489 MSI-X entry[%d]: vector=x%x "
8258                                 "message=%d\n", index,
8259                                 phba->sli4_hba.msix_entries[index].vector,
8260                                 phba->sli4_hba.msix_entries[index].entry);
8261
8262         /*
8263          * Assign MSI-X vectors to interrupt handlers
8264          */
8265         for (index = 0; index < vectors; index++) {
8266                 memset(&phba->sli4_hba.handler_name[index], 0, 16);
8267                 sprintf((char *)&phba->sli4_hba.handler_name[index],
8268                          LPFC_DRIVER_HANDLER_NAME"%d", index);
8269
8270                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
8271                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
8272                 atomic_set(&phba->sli4_hba.fcp_eq_hdl[index].fcp_eq_in_use, 1);
8273                 rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
8274                                  &lpfc_sli4_hba_intr_handler, IRQF_SHARED,
8275                                  (char *)&phba->sli4_hba.handler_name[index],
8276                                  &phba->sli4_hba.fcp_eq_hdl[index]);
8277                 if (rc) {
8278                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8279                                         "0486 MSI-X fast-path (%d) "
8280                                         "request_irq failed (%d)\n", index, rc);
8281                         goto cfg_fail_out;
8282                 }
8283         }
8284
8285         if (vectors != phba->cfg_fcp_io_channel) {
8286                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8287                                 "3238 Reducing IO channels to match number of "
8288                                 "MSI-X vectors, requested %d got %d\n",
8289                                 phba->cfg_fcp_io_channel, vectors);
8290                 phba->cfg_fcp_io_channel = vectors;
8291         }
8292         return rc;
8293
8294 cfg_fail_out:
8295         /* free the irq already requested */
8296         for (--index; index >= 0; index--)
8297                 free_irq(phba->sli4_hba.msix_entries[index].vector,
8298                          &phba->sli4_hba.fcp_eq_hdl[index]);
8299
8300 msi_fail_out:
8301         /* Unconfigure MSI-X capability structure */
8302         pci_disable_msix(phba->pcidev);
8303         return rc;
8304 }
8305
8306 /**
8307  * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device
8308  * @phba: pointer to lpfc hba data structure.
8309  *
8310  * This routine is invoked to release the MSI-X vectors and then disable the
8311  * MSI-X interrupt mode to device with SLI-4 interface spec.
8312  **/
8313 static void
8314 lpfc_sli4_disable_msix(struct lpfc_hba *phba)
8315 {
8316         int index;
8317
8318         /* Free up MSI-X multi-message vectors */
8319         for (index = 0; index < phba->cfg_fcp_io_channel; index++)
8320                 free_irq(phba->sli4_hba.msix_entries[index].vector,
8321                          &phba->sli4_hba.fcp_eq_hdl[index]);
8322
8323         /* Disable MSI-X */
8324         pci_disable_msix(phba->pcidev);
8325
8326         return;
8327 }
8328
8329 /**
8330  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
8331  * @phba: pointer to lpfc hba data structure.
8332  *
8333  * This routine is invoked to enable the MSI interrupt mode to device with
8334  * SLI-4 interface spec. The kernel function pci_enable_msi() is called
8335  * to enable the MSI vector. The device driver is responsible for calling
8336  * the request_irq() to register MSI vector with a interrupt the handler,
8337  * which is done in this function.
8338  *
8339  * Return codes
8340  *      0 - successful
8341  *      other values - error
8342  **/
8343 static int
8344 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
8345 {
8346         int rc, index;
8347
8348         rc = pci_enable_msi(phba->pcidev);
8349         if (!rc)
8350                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8351                                 "0487 PCI enable MSI mode success.\n");
8352         else {
8353                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8354                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
8355                 return rc;
8356         }
8357
8358         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
8359                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
8360         if (rc) {
8361                 pci_disable_msi(phba->pcidev);
8362                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
8363                                 "0490 MSI request_irq failed (%d)\n", rc);
8364                 return rc;
8365         }
8366
8367         for (index = 0; index < phba->cfg_fcp_io_channel; index++) {
8368                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
8369                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
8370         }
8371
8372         return 0;
8373 }
8374
8375 /**
8376  * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device
8377  * @phba: pointer to lpfc hba data structure.
8378  *
8379  * This routine is invoked to disable the MSI interrupt mode to device with
8380  * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has
8381  * done request_irq() on before calling pci_disable_msi(). Failure to do so
8382  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
8383  * its vector.
8384  **/
8385 static void
8386 lpfc_sli4_disable_msi(struct lpfc_hba *phba)
8387 {
8388         free_irq(phba->pcidev->irq, phba);
8389         pci_disable_msi(phba->pcidev);
8390         return;
8391 }
8392
8393 /**
8394  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
8395  * @phba: pointer to lpfc hba data structure.
8396  *
8397  * This routine is invoked to enable device interrupt and associate driver's
8398  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
8399  * interface spec. Depends on the interrupt mode configured to the driver,
8400  * the driver will try to fallback from the configured interrupt mode to an
8401  * interrupt mode which is supported by the platform, kernel, and device in
8402  * the order of:
8403  * MSI-X -> MSI -> IRQ.
8404  *
8405  * Return codes
8406  *      0 - successful
8407  *      other values - error
8408  **/
8409 static uint32_t
8410 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
8411 {
8412         uint32_t intr_mode = LPFC_INTR_ERROR;
8413         int retval, index;
8414
8415         if (cfg_mode == 2) {
8416                 /* Preparation before conf_msi mbox cmd */
8417                 retval = 0;
8418                 if (!retval) {
8419                         /* Now, try to enable MSI-X interrupt mode */
8420                         retval = lpfc_sli4_enable_msix(phba);
8421                         if (!retval) {
8422                                 /* Indicate initialization to MSI-X mode */
8423                                 phba->intr_type = MSIX;
8424                                 intr_mode = 2;
8425                         }
8426                 }
8427         }
8428
8429         /* Fallback to MSI if MSI-X initialization failed */
8430         if (cfg_mode >= 1 && phba->intr_type == NONE) {
8431                 retval = lpfc_sli4_enable_msi(phba);
8432                 if (!retval) {
8433                         /* Indicate initialization to MSI mode */
8434                         phba->intr_type = MSI;
8435                         intr_mode = 1;
8436                 }
8437         }
8438
8439         /* Fallback to INTx if both MSI-X/MSI initalization failed */
8440         if (phba->intr_type == NONE) {
8441                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
8442                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
8443                 if (!retval) {
8444                         /* Indicate initialization to INTx mode */
8445                         phba->intr_type = INTx;
8446                         intr_mode = 0;
8447                         for (index = 0; index < phba->cfg_fcp_io_channel;
8448                              index++) {
8449                                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
8450                                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
8451                                 atomic_set(&phba->sli4_hba.fcp_eq_hdl[index].
8452                                         fcp_eq_in_use, 1);
8453                         }
8454                 }
8455         }
8456         return intr_mode;
8457 }
8458
8459 /**
8460  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
8461  * @phba: pointer to lpfc hba data structure.
8462  *
8463  * This routine is invoked to disable device interrupt and disassociate
8464  * the driver's interrupt handler(s) from interrupt vector(s) to device
8465  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
8466  * will release the interrupt vector(s) for the message signaled interrupt.
8467  **/
8468 static void
8469 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
8470 {
8471         /* Disable the currently initialized interrupt mode */
8472         if (phba->intr_type == MSIX)
8473                 lpfc_sli4_disable_msix(phba);
8474         else if (phba->intr_type == MSI)
8475                 lpfc_sli4_disable_msi(phba);
8476         else if (phba->intr_type == INTx)
8477                 free_irq(phba->pcidev->irq, phba);
8478
8479         /* Reset interrupt management states */
8480         phba->intr_type = NONE;
8481         phba->sli.slistat.sli_intr = 0;
8482
8483         return;
8484 }
8485
8486 /**
8487  * lpfc_unset_hba - Unset SLI3 hba device initialization
8488  * @phba: pointer to lpfc hba data structure.
8489  *
8490  * This routine is invoked to unset the HBA device initialization steps to
8491  * a device with SLI-3 interface spec.
8492  **/
8493 static void
8494 lpfc_unset_hba(struct lpfc_hba *phba)
8495 {
8496         struct lpfc_vport *vport = phba->pport;
8497         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
8498
8499         spin_lock_irq(shost->host_lock);
8500         vport->load_flag |= FC_UNLOADING;
8501         spin_unlock_irq(shost->host_lock);
8502
8503         kfree(phba->vpi_bmask);
8504         kfree(phba->vpi_ids);
8505
8506         lpfc_stop_hba_timers(phba);
8507
8508         phba->pport->work_port_events = 0;
8509
8510         lpfc_sli_hba_down(phba);
8511
8512         lpfc_sli_brdrestart(phba);
8513
8514         lpfc_sli_disable_intr(phba);
8515
8516         return;
8517 }
8518
8519 /**
8520  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
8521  * @phba: Pointer to HBA context object.
8522  *
8523  * This function is called in the SLI4 code path to wait for completion
8524  * of device's XRIs exchange busy. It will check the XRI exchange busy
8525  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
8526  * that, it will check the XRI exchange busy on outstanding FCP and ELS
8527  * I/Os every 30 seconds, log error message, and wait forever. Only when
8528  * all XRI exchange busy complete, the driver unload shall proceed with
8529  * invoking the function reset ioctl mailbox command to the CNA and the
8530  * the rest of the driver unload resource release.
8531  **/
8532 static void
8533 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
8534 {
8535         int wait_time = 0;
8536         int fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
8537         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8538
8539         while (!fcp_xri_cmpl || !els_xri_cmpl) {
8540                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
8541                         if (!fcp_xri_cmpl)
8542                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8543                                                 "2877 FCP XRI exchange busy "
8544                                                 "wait time: %d seconds.\n",
8545                                                 wait_time/1000);
8546                         if (!els_xri_cmpl)
8547                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8548                                                 "2878 ELS XRI exchange busy "
8549                                                 "wait time: %d seconds.\n",
8550                                                 wait_time/1000);
8551                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
8552                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
8553                 } else {
8554                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
8555                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
8556                 }
8557                 fcp_xri_cmpl =
8558                         list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
8559                 els_xri_cmpl =
8560                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
8561         }
8562 }
8563
8564 /**
8565  * lpfc_sli4_hba_unset - Unset the fcoe hba
8566  * @phba: Pointer to HBA context object.
8567  *
8568  * This function is called in the SLI4 code path to reset the HBA's FCoE
8569  * function. The caller is not required to hold any lock. This routine
8570  * issues PCI function reset mailbox command to reset the FCoE function.
8571  * At the end of the function, it calls lpfc_hba_down_post function to
8572  * free any pending commands.
8573  **/
8574 static void
8575 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
8576 {
8577         int wait_cnt = 0;
8578         LPFC_MBOXQ_t *mboxq;
8579         struct pci_dev *pdev = phba->pcidev;
8580
8581         lpfc_stop_hba_timers(phba);
8582         phba->sli4_hba.intr_enable = 0;
8583
8584         /*
8585          * Gracefully wait out the potential current outstanding asynchronous
8586          * mailbox command.
8587          */
8588
8589         /* First, block any pending async mailbox command from posted */
8590         spin_lock_irq(&phba->hbalock);
8591         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
8592         spin_unlock_irq(&phba->hbalock);
8593         /* Now, trying to wait it out if we can */
8594         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8595                 msleep(10);
8596                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
8597                         break;
8598         }
8599         /* Forcefully release the outstanding mailbox command if timed out */
8600         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8601                 spin_lock_irq(&phba->hbalock);
8602                 mboxq = phba->sli.mbox_active;
8603                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
8604                 __lpfc_mbox_cmpl_put(phba, mboxq);
8605                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8606                 phba->sli.mbox_active = NULL;
8607                 spin_unlock_irq(&phba->hbalock);
8608         }
8609
8610         /* Abort all iocbs associated with the hba */
8611         lpfc_sli_hba_iocb_abort(phba);
8612
8613         /* Wait for completion of device XRI exchange busy */
8614         lpfc_sli4_xri_exchange_busy_wait(phba);
8615
8616         /* Disable PCI subsystem interrupt */
8617         lpfc_sli4_disable_intr(phba);
8618
8619         /* Disable SR-IOV if enabled */
8620         if (phba->cfg_sriov_nr_virtfn)
8621                 pci_disable_sriov(pdev);
8622
8623         /* Stop kthread signal shall trigger work_done one more time */
8624         kthread_stop(phba->worker_thread);
8625
8626         /* Reset SLI4 HBA FCoE function */
8627         lpfc_pci_function_reset(phba);
8628         lpfc_sli4_queue_destroy(phba);
8629
8630         /* Stop the SLI4 device port */
8631         phba->pport->work_port_events = 0;
8632 }
8633
8634  /**
8635  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
8636  * @phba: Pointer to HBA context object.
8637  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8638  *
8639  * This function is called in the SLI4 code path to read the port's
8640  * sli4 capabilities.
8641  *
8642  * This function may be be called from any context that can block-wait
8643  * for the completion.  The expectation is that this routine is called
8644  * typically from probe_one or from the online routine.
8645  **/
8646 int
8647 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8648 {
8649         int rc;
8650         struct lpfc_mqe *mqe;
8651         struct lpfc_pc_sli4_params *sli4_params;
8652         uint32_t mbox_tmo;
8653
8654         rc = 0;
8655         mqe = &mboxq->u.mqe;
8656
8657         /* Read the port's SLI4 Parameters port capabilities */
8658         lpfc_pc_sli4_params(mboxq);
8659         if (!phba->sli4_hba.intr_enable)
8660                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8661         else {
8662                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
8663                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8664         }
8665
8666         if (unlikely(rc))
8667                 return 1;
8668
8669         sli4_params = &phba->sli4_hba.pc_sli4_params;
8670         sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
8671         sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
8672         sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
8673         sli4_params->featurelevel_1 = bf_get(featurelevel_1,
8674                                              &mqe->un.sli4_params);
8675         sli4_params->featurelevel_2 = bf_get(featurelevel_2,
8676                                              &mqe->un.sli4_params);
8677         sli4_params->proto_types = mqe->un.sli4_params.word3;
8678         sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
8679         sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
8680         sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
8681         sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
8682         sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
8683         sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
8684         sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
8685         sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
8686         sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
8687         sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
8688         sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
8689         sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
8690         sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
8691         sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
8692         sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
8693         sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
8694         sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
8695         sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
8696         sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
8697         sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
8698
8699         /* Make sure that sge_supp_len can be handled by the driver */
8700         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8701                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8702
8703         return rc;
8704 }
8705
8706 /**
8707  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
8708  * @phba: Pointer to HBA context object.
8709  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8710  *
8711  * This function is called in the SLI4 code path to read the port's
8712  * sli4 capabilities.
8713  *
8714  * This function may be be called from any context that can block-wait
8715  * for the completion.  The expectation is that this routine is called
8716  * typically from probe_one or from the online routine.
8717  **/
8718 int
8719 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8720 {
8721         int rc;
8722         struct lpfc_mqe *mqe = &mboxq->u.mqe;
8723         struct lpfc_pc_sli4_params *sli4_params;
8724         uint32_t mbox_tmo;
8725         int length;
8726         struct lpfc_sli4_parameters *mbx_sli4_parameters;
8727
8728         /*
8729          * By default, the driver assumes the SLI4 port requires RPI
8730          * header postings.  The SLI4_PARAM response will correct this
8731          * assumption.
8732          */
8733         phba->sli4_hba.rpi_hdrs_in_use = 1;
8734
8735         /* Read the port's SLI4 Config Parameters */
8736         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
8737                   sizeof(struct lpfc_sli4_cfg_mhdr));
8738         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
8739                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
8740                          length, LPFC_SLI4_MBX_EMBED);
8741         if (!phba->sli4_hba.intr_enable)
8742                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8743         else {
8744                 mbox_tmo = lpfc_mbox_tmo_val(phba, mboxq);
8745                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8746         }
8747         if (unlikely(rc))
8748                 return rc;
8749         sli4_params = &phba->sli4_hba.pc_sli4_params;
8750         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
8751         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
8752         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
8753         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
8754         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
8755                                              mbx_sli4_parameters);
8756         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
8757                                              mbx_sli4_parameters);
8758         if (bf_get(cfg_phwq, mbx_sli4_parameters))
8759                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
8760         else
8761                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
8762         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
8763         sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
8764         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
8765         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
8766         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
8767         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
8768         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
8769                                             mbx_sli4_parameters);
8770         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
8771                                            mbx_sli4_parameters);
8772         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
8773         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
8774
8775         /* Make sure that sge_supp_len can be handled by the driver */
8776         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8777                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8778
8779         return 0;
8780 }
8781
8782 /**
8783  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
8784  * @pdev: pointer to PCI device
8785  * @pid: pointer to PCI device identifier
8786  *
8787  * This routine is to be called to attach a device with SLI-3 interface spec
8788  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8789  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8790  * information of the device and driver to see if the driver state that it can
8791  * support this kind of device. If the match is successful, the driver core
8792  * invokes this routine. If this routine determines it can claim the HBA, it
8793  * does all the initialization that it needs to do to handle the HBA properly.
8794  *
8795  * Return code
8796  *      0 - driver can claim the device
8797  *      negative value - driver can not claim the device
8798  **/
8799 static int
8800 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
8801 {
8802         struct lpfc_hba   *phba;
8803         struct lpfc_vport *vport = NULL;
8804         struct Scsi_Host  *shost = NULL;
8805         int error;
8806         uint32_t cfg_mode, intr_mode;
8807
8808         /* Allocate memory for HBA structure */
8809         phba = lpfc_hba_alloc(pdev);
8810         if (!phba)
8811                 return -ENOMEM;
8812
8813         /* Perform generic PCI device enabling operation */
8814         error = lpfc_enable_pci_dev(phba);
8815         if (error)
8816                 goto out_free_phba;
8817
8818         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
8819         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
8820         if (error)
8821                 goto out_disable_pci_dev;
8822
8823         /* Set up SLI-3 specific device PCI memory space */
8824         error = lpfc_sli_pci_mem_setup(phba);
8825         if (error) {
8826                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8827                                 "1402 Failed to set up pci memory space.\n");
8828                 goto out_disable_pci_dev;
8829         }
8830
8831         /* Set up phase-1 common device driver resources */
8832         error = lpfc_setup_driver_resource_phase1(phba);
8833         if (error) {
8834                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8835                                 "1403 Failed to set up driver resource.\n");
8836                 goto out_unset_pci_mem_s3;
8837         }
8838
8839         /* Set up SLI-3 specific device driver resources */
8840         error = lpfc_sli_driver_resource_setup(phba);
8841         if (error) {
8842                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8843                                 "1404 Failed to set up driver resource.\n");
8844                 goto out_unset_pci_mem_s3;
8845         }
8846
8847         /* Initialize and populate the iocb list per host */
8848         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
8849         if (error) {
8850                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8851                                 "1405 Failed to initialize iocb list.\n");
8852                 goto out_unset_driver_resource_s3;
8853         }
8854
8855         /* Set up common device driver resources */
8856         error = lpfc_setup_driver_resource_phase2(phba);
8857         if (error) {
8858                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8859                                 "1406 Failed to set up driver resource.\n");
8860                 goto out_free_iocb_list;
8861         }
8862
8863         /* Get the default values for Model Name and Description */
8864         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
8865
8866         /* Create SCSI host to the physical port */
8867         error = lpfc_create_shost(phba);
8868         if (error) {
8869                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8870                                 "1407 Failed to create scsi host.\n");
8871                 goto out_unset_driver_resource;
8872         }
8873
8874         /* Configure sysfs attributes */
8875         vport = phba->pport;
8876         error = lpfc_alloc_sysfs_attr(vport);
8877         if (error) {
8878                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8879                                 "1476 Failed to allocate sysfs attr\n");
8880                 goto out_destroy_shost;
8881         }
8882
8883         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
8884         /* Now, trying to enable interrupt and bring up the device */
8885         cfg_mode = phba->cfg_use_msi;
8886         while (true) {
8887                 /* Put device to a known state before enabling interrupt */
8888                 lpfc_stop_port(phba);
8889                 /* Configure and enable interrupt */
8890                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
8891                 if (intr_mode == LPFC_INTR_ERROR) {
8892                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8893                                         "0431 Failed to enable interrupt.\n");
8894                         error = -ENODEV;
8895                         goto out_free_sysfs_attr;
8896                 }
8897                 /* SLI-3 HBA setup */
8898                 if (lpfc_sli_hba_setup(phba)) {
8899                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8900                                         "1477 Failed to set up hba\n");
8901                         error = -ENODEV;
8902                         goto out_remove_device;
8903                 }
8904
8905                 /* Wait 50ms for the interrupts of previous mailbox commands */
8906                 msleep(50);
8907                 /* Check active interrupts on message signaled interrupts */
8908                 if (intr_mode == 0 ||
8909                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
8910                         /* Log the current active interrupt mode */
8911                         phba->intr_mode = intr_mode;
8912                         lpfc_log_intr_mode(phba, intr_mode);
8913                         break;
8914                 } else {
8915                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8916                                         "0447 Configure interrupt mode (%d) "
8917                                         "failed active interrupt test.\n",
8918                                         intr_mode);
8919                         /* Disable the current interrupt mode */
8920                         lpfc_sli_disable_intr(phba);
8921                         /* Try next level of interrupt mode */
8922                         cfg_mode = --intr_mode;
8923                 }
8924         }
8925
8926         /* Perform post initialization setup */
8927         lpfc_post_init_setup(phba);
8928
8929         /* Check if there are static vports to be created. */
8930         lpfc_create_static_vport(phba);
8931
8932         return 0;
8933
8934 out_remove_device:
8935         lpfc_unset_hba(phba);
8936 out_free_sysfs_attr:
8937         lpfc_free_sysfs_attr(vport);
8938 out_destroy_shost:
8939         lpfc_destroy_shost(phba);
8940 out_unset_driver_resource:
8941         lpfc_unset_driver_resource_phase2(phba);
8942 out_free_iocb_list:
8943         lpfc_free_iocb_list(phba);
8944 out_unset_driver_resource_s3:
8945         lpfc_sli_driver_resource_unset(phba);
8946 out_unset_pci_mem_s3:
8947         lpfc_sli_pci_mem_unset(phba);
8948 out_disable_pci_dev:
8949         lpfc_disable_pci_dev(phba);
8950         if (shost)
8951                 scsi_host_put(shost);
8952 out_free_phba:
8953         lpfc_hba_free(phba);
8954         return error;
8955 }
8956
8957 /**
8958  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
8959  * @pdev: pointer to PCI device
8960  *
8961  * This routine is to be called to disattach a device with SLI-3 interface
8962  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8963  * removed from PCI bus, it performs all the necessary cleanup for the HBA
8964  * device to be removed from the PCI subsystem properly.
8965  **/
8966 static void
8967 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
8968 {
8969         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
8970         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
8971         struct lpfc_vport **vports;
8972         struct lpfc_hba   *phba = vport->phba;
8973         int i;
8974         int bars = pci_select_bars(pdev, IORESOURCE_MEM);
8975
8976         spin_lock_irq(&phba->hbalock);
8977         vport->load_flag |= FC_UNLOADING;
8978         spin_unlock_irq(&phba->hbalock);
8979
8980         lpfc_free_sysfs_attr(vport);
8981
8982         /* Release all the vports against this physical port */
8983         vports = lpfc_create_vport_work_array(phba);
8984         if (vports != NULL)
8985                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
8986                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
8987                                 continue;
8988                         fc_vport_terminate(vports[i]->fc_vport);
8989                 }
8990         lpfc_destroy_vport_work_array(phba, vports);
8991
8992         /* Remove FC host and then SCSI host with the physical port */
8993         fc_remove_host(shost);
8994         scsi_remove_host(shost);
8995         lpfc_cleanup(vport);
8996
8997         /*
8998          * Bring down the SLI Layer. This step disable all interrupts,
8999          * clears the rings, discards all mailbox commands, and resets
9000          * the HBA.
9001          */
9002
9003         /* HBA interrupt will be disabled after this call */
9004         lpfc_sli_hba_down(phba);
9005         /* Stop kthread signal shall trigger work_done one more time */
9006         kthread_stop(phba->worker_thread);
9007         /* Final cleanup of txcmplq and reset the HBA */
9008         lpfc_sli_brdrestart(phba);
9009
9010         kfree(phba->vpi_bmask);
9011         kfree(phba->vpi_ids);
9012
9013         lpfc_stop_hba_timers(phba);
9014         spin_lock_irq(&phba->hbalock);
9015         list_del_init(&vport->listentry);
9016         spin_unlock_irq(&phba->hbalock);
9017
9018         lpfc_debugfs_terminate(vport);
9019
9020         /* Disable SR-IOV if enabled */
9021         if (phba->cfg_sriov_nr_virtfn)
9022                 pci_disable_sriov(pdev);
9023
9024         /* Disable interrupt */
9025         lpfc_sli_disable_intr(phba);
9026
9027         pci_set_drvdata(pdev, NULL);
9028         scsi_host_put(shost);
9029
9030         /*
9031          * Call scsi_free before mem_free since scsi bufs are released to their
9032          * corresponding pools here.
9033          */
9034         lpfc_scsi_free(phba);
9035         lpfc_mem_free_all(phba);
9036
9037         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
9038                           phba->hbqslimp.virt, phba->hbqslimp.phys);
9039
9040         /* Free resources associated with SLI2 interface */
9041         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
9042                           phba->slim2p.virt, phba->slim2p.phys);
9043
9044         /* unmap adapter SLIM and Control Registers */
9045         iounmap(phba->ctrl_regs_memmap_p);
9046         iounmap(phba->slim_memmap_p);
9047
9048         lpfc_hba_free(phba);
9049
9050         pci_release_selected_regions(pdev, bars);
9051         pci_disable_device(pdev);
9052 }
9053
9054 /**
9055  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
9056  * @pdev: pointer to PCI device
9057  * @msg: power management message
9058  *
9059  * This routine is to be called from the kernel's PCI subsystem to support
9060  * system Power Management (PM) to device with SLI-3 interface spec. When
9061  * PM invokes this method, it quiesces the device by stopping the driver's
9062  * worker thread for the device, turning off device's interrupt and DMA,
9063  * and bring the device offline. Note that as the driver implements the
9064  * minimum PM requirements to a power-aware driver's PM support for the
9065  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
9066  * to the suspend() method call will be treated as SUSPEND and the driver will
9067  * fully reinitialize its device during resume() method call, the driver will
9068  * set device to PCI_D3hot state in PCI config space instead of setting it
9069  * according to the @msg provided by the PM.
9070  *
9071  * Return code
9072  *      0 - driver suspended the device
9073  *      Error otherwise
9074  **/
9075 static int
9076 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
9077 {
9078         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9079         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9080
9081         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9082                         "0473 PCI device Power Management suspend.\n");
9083
9084         /* Bring down the device */
9085         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
9086         lpfc_offline(phba);
9087         kthread_stop(phba->worker_thread);
9088
9089         /* Disable interrupt from device */
9090         lpfc_sli_disable_intr(phba);
9091
9092         /* Save device state to PCI config space */
9093         pci_save_state(pdev);
9094         pci_set_power_state(pdev, PCI_D3hot);
9095
9096         return 0;
9097 }
9098
9099 /**
9100  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
9101  * @pdev: pointer to PCI device
9102  *
9103  * This routine is to be called from the kernel's PCI subsystem to support
9104  * system Power Management (PM) to device with SLI-3 interface spec. When PM
9105  * invokes this method, it restores the device's PCI config space state and
9106  * fully reinitializes the device and brings it online. Note that as the
9107  * driver implements the minimum PM requirements to a power-aware driver's
9108  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
9109  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
9110  * driver will fully reinitialize its device during resume() method call,
9111  * the device will be set to PCI_D0 directly in PCI config space before
9112  * restoring the state.
9113  *
9114  * Return code
9115  *      0 - driver suspended the device
9116  *      Error otherwise
9117  **/
9118 static int
9119 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
9120 {
9121         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9122         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9123         uint32_t intr_mode;
9124         int error;
9125
9126         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9127                         "0452 PCI device Power Management resume.\n");
9128
9129         /* Restore device state from PCI config space */
9130         pci_set_power_state(pdev, PCI_D0);
9131         pci_restore_state(pdev);
9132
9133         /*
9134          * As the new kernel behavior of pci_restore_state() API call clears
9135          * device saved_state flag, need to save the restored state again.
9136          */
9137         pci_save_state(pdev);
9138
9139         if (pdev->is_busmaster)
9140                 pci_set_master(pdev);
9141
9142         /* Startup the kernel thread for this host adapter. */
9143         phba->worker_thread = kthread_run(lpfc_do_work, phba,
9144                                         "lpfc_worker_%d", phba->brd_no);
9145         if (IS_ERR(phba->worker_thread)) {
9146                 error = PTR_ERR(phba->worker_thread);
9147                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9148                                 "0434 PM resume failed to start worker "
9149                                 "thread: error=x%x.\n", error);
9150                 return error;
9151         }
9152
9153         /* Configure and enable interrupt */
9154         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
9155         if (intr_mode == LPFC_INTR_ERROR) {
9156                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9157                                 "0430 PM resume Failed to enable interrupt\n");
9158                 return -EIO;
9159         } else
9160                 phba->intr_mode = intr_mode;
9161
9162         /* Restart HBA and bring it online */
9163         lpfc_sli_brdrestart(phba);
9164         lpfc_online(phba);
9165
9166         /* Log the current active interrupt mode */
9167         lpfc_log_intr_mode(phba, phba->intr_mode);
9168
9169         return 0;
9170 }
9171
9172 /**
9173  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
9174  * @phba: pointer to lpfc hba data structure.
9175  *
9176  * This routine is called to prepare the SLI3 device for PCI slot recover. It
9177  * aborts all the outstanding SCSI I/Os to the pci device.
9178  **/
9179 static void
9180 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
9181 {
9182         struct lpfc_sli *psli = &phba->sli;
9183         struct lpfc_sli_ring  *pring;
9184
9185         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9186                         "2723 PCI channel I/O abort preparing for recovery\n");
9187
9188         /*
9189          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
9190          * and let the SCSI mid-layer to retry them to recover.
9191          */
9192         pring = &psli->ring[psli->fcp_ring];
9193         lpfc_sli_abort_iocb_ring(phba, pring);
9194 }
9195
9196 /**
9197  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
9198  * @phba: pointer to lpfc hba data structure.
9199  *
9200  * This routine is called to prepare the SLI3 device for PCI slot reset. It
9201  * disables the device interrupt and pci device, and aborts the internal FCP
9202  * pending I/Os.
9203  **/
9204 static void
9205 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
9206 {
9207         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9208                         "2710 PCI channel disable preparing for reset\n");
9209
9210         /* Block any management I/Os to the device */
9211         lpfc_block_mgmt_io(phba, LPFC_MBX_WAIT);
9212
9213         /* Block all SCSI devices' I/Os on the host */
9214         lpfc_scsi_dev_block(phba);
9215
9216         /* stop all timers */
9217         lpfc_stop_hba_timers(phba);
9218
9219         /* Disable interrupt and pci device */
9220         lpfc_sli_disable_intr(phba);
9221         pci_disable_device(phba->pcidev);
9222
9223         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
9224         lpfc_sli_flush_fcp_rings(phba);
9225 }
9226
9227 /**
9228  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
9229  * @phba: pointer to lpfc hba data structure.
9230  *
9231  * This routine is called to prepare the SLI3 device for PCI slot permanently
9232  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
9233  * pending I/Os.
9234  **/
9235 static void
9236 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
9237 {
9238         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9239                         "2711 PCI channel permanent disable for failure\n");
9240         /* Block all SCSI devices' I/Os on the host */
9241         lpfc_scsi_dev_block(phba);
9242
9243         /* stop all timers */
9244         lpfc_stop_hba_timers(phba);
9245
9246         /* Clean up all driver's outstanding SCSI I/Os */
9247         lpfc_sli_flush_fcp_rings(phba);
9248 }
9249
9250 /**
9251  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
9252  * @pdev: pointer to PCI device.
9253  * @state: the current PCI connection state.
9254  *
9255  * This routine is called from the PCI subsystem for I/O error handling to
9256  * device with SLI-3 interface spec. This function is called by the PCI
9257  * subsystem after a PCI bus error affecting this device has been detected.
9258  * When this function is invoked, it will need to stop all the I/Os and
9259  * interrupt(s) to the device. Once that is done, it will return
9260  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
9261  * as desired.
9262  *
9263  * Return codes
9264  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
9265  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9266  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9267  **/
9268 static pci_ers_result_t
9269 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
9270 {
9271         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9272         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9273
9274         switch (state) {
9275         case pci_channel_io_normal:
9276                 /* Non-fatal error, prepare for recovery */
9277                 lpfc_sli_prep_dev_for_recover(phba);
9278                 return PCI_ERS_RESULT_CAN_RECOVER;
9279         case pci_channel_io_frozen:
9280                 /* Fatal error, prepare for slot reset */
9281                 lpfc_sli_prep_dev_for_reset(phba);
9282                 return PCI_ERS_RESULT_NEED_RESET;
9283         case pci_channel_io_perm_failure:
9284                 /* Permanent failure, prepare for device down */
9285                 lpfc_sli_prep_dev_for_perm_failure(phba);
9286                 return PCI_ERS_RESULT_DISCONNECT;
9287         default:
9288                 /* Unknown state, prepare and request slot reset */
9289                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9290                                 "0472 Unknown PCI error state: x%x\n", state);
9291                 lpfc_sli_prep_dev_for_reset(phba);
9292                 return PCI_ERS_RESULT_NEED_RESET;
9293         }
9294 }
9295
9296 /**
9297  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
9298  * @pdev: pointer to PCI device.
9299  *
9300  * This routine is called from the PCI subsystem for error handling to
9301  * device with SLI-3 interface spec. This is called after PCI bus has been
9302  * reset to restart the PCI card from scratch, as if from a cold-boot.
9303  * During the PCI subsystem error recovery, after driver returns
9304  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
9305  * recovery and then call this routine before calling the .resume method
9306  * to recover the device. This function will initialize the HBA device,
9307  * enable the interrupt, but it will just put the HBA to offline state
9308  * without passing any I/O traffic.
9309  *
9310  * Return codes
9311  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9312  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9313  */
9314 static pci_ers_result_t
9315 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
9316 {
9317         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9318         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9319         struct lpfc_sli *psli = &phba->sli;
9320         uint32_t intr_mode;
9321
9322         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
9323         if (pci_enable_device_mem(pdev)) {
9324                 printk(KERN_ERR "lpfc: Cannot re-enable "
9325                         "PCI device after reset.\n");
9326                 return PCI_ERS_RESULT_DISCONNECT;
9327         }
9328
9329         pci_restore_state(pdev);
9330
9331         /*
9332          * As the new kernel behavior of pci_restore_state() API call clears
9333          * device saved_state flag, need to save the restored state again.
9334          */
9335         pci_save_state(pdev);
9336
9337         if (pdev->is_busmaster)
9338                 pci_set_master(pdev);
9339
9340         spin_lock_irq(&phba->hbalock);
9341         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
9342         spin_unlock_irq(&phba->hbalock);
9343
9344         /* Configure and enable interrupt */
9345         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
9346         if (intr_mode == LPFC_INTR_ERROR) {
9347                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9348                                 "0427 Cannot re-enable interrupt after "
9349                                 "slot reset.\n");
9350                 return PCI_ERS_RESULT_DISCONNECT;
9351         } else
9352                 phba->intr_mode = intr_mode;
9353
9354         /* Take device offline, it will perform cleanup */
9355         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
9356         lpfc_offline(phba);
9357         lpfc_sli_brdrestart(phba);
9358
9359         /* Log the current active interrupt mode */
9360         lpfc_log_intr_mode(phba, phba->intr_mode);
9361
9362         return PCI_ERS_RESULT_RECOVERED;
9363 }
9364
9365 /**
9366  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
9367  * @pdev: pointer to PCI device
9368  *
9369  * This routine is called from the PCI subsystem for error handling to device
9370  * with SLI-3 interface spec. It is called when kernel error recovery tells
9371  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
9372  * error recovery. After this call, traffic can start to flow from this device
9373  * again.
9374  */
9375 static void
9376 lpfc_io_resume_s3(struct pci_dev *pdev)
9377 {
9378         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9379         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9380
9381         /* Bring device online, it will be no-op for non-fatal error resume */
9382         lpfc_online(phba);
9383
9384         /* Clean up Advanced Error Reporting (AER) if needed */
9385         if (phba->hba_flag & HBA_AER_ENABLED)
9386                 pci_cleanup_aer_uncorrect_error_status(pdev);
9387 }
9388
9389 /**
9390  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
9391  * @phba: pointer to lpfc hba data structure.
9392  *
9393  * returns the number of ELS/CT IOCBs to reserve
9394  **/
9395 int
9396 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
9397 {
9398         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
9399
9400         if (phba->sli_rev == LPFC_SLI_REV4) {
9401                 if (max_xri <= 100)
9402                         return 10;
9403                 else if (max_xri <= 256)
9404                         return 25;
9405                 else if (max_xri <= 512)
9406                         return 50;
9407                 else if (max_xri <= 1024)
9408                         return 100;
9409                 else if (max_xri <= 1536)
9410                         return 150;
9411                 else if (max_xri <= 2048)
9412                         return 200;
9413                 else
9414                         return 250;
9415         } else
9416                 return 0;
9417 }
9418
9419 /**
9420  * lpfc_write_firmware - attempt to write a firmware image to the port
9421  * @fw: pointer to firmware image returned from request_firmware.
9422  * @phba: pointer to lpfc hba data structure.
9423  *
9424  **/
9425 static void
9426 lpfc_write_firmware(const struct firmware *fw, void *context)
9427 {
9428         struct lpfc_hba *phba = (struct lpfc_hba *)context;
9429         char fwrev[FW_REV_STR_SIZE];
9430         struct lpfc_grp_hdr *image;
9431         struct list_head dma_buffer_list;
9432         int i, rc = 0;
9433         struct lpfc_dmabuf *dmabuf, *next;
9434         uint32_t offset = 0, temp_offset = 0;
9435
9436         /* It can be null in no-wait mode, sanity check */
9437         if (!fw) {
9438                 rc = -ENXIO;
9439                 goto out;
9440         }
9441         image = (struct lpfc_grp_hdr *)fw->data;
9442
9443         INIT_LIST_HEAD(&dma_buffer_list);
9444         if ((be32_to_cpu(image->magic_number) != LPFC_GROUP_OJECT_MAGIC_NUM) ||
9445             (bf_get_be32(lpfc_grp_hdr_file_type, image) !=
9446              LPFC_FILE_TYPE_GROUP) ||
9447             (bf_get_be32(lpfc_grp_hdr_id, image) != LPFC_FILE_ID_GROUP) ||
9448             (be32_to_cpu(image->size) != fw->size)) {
9449                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9450                                 "3022 Invalid FW image found. "
9451                                 "Magic:%x Type:%x ID:%x\n",
9452                                 be32_to_cpu(image->magic_number),
9453                                 bf_get_be32(lpfc_grp_hdr_file_type, image),
9454                                 bf_get_be32(lpfc_grp_hdr_id, image));
9455                 rc = -EINVAL;
9456                 goto release_out;
9457         }
9458         lpfc_decode_firmware_rev(phba, fwrev, 1);
9459         if (strncmp(fwrev, image->revision, strnlen(image->revision, 16))) {
9460                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9461                                 "3023 Updating Firmware, Current Version:%s "
9462                                 "New Version:%s\n",
9463                                 fwrev, image->revision);
9464                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
9465                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
9466                                          GFP_KERNEL);
9467                         if (!dmabuf) {
9468                                 rc = -ENOMEM;
9469                                 goto release_out;
9470                         }
9471                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
9472                                                           SLI4_PAGE_SIZE,
9473                                                           &dmabuf->phys,
9474                                                           GFP_KERNEL);
9475                         if (!dmabuf->virt) {
9476                                 kfree(dmabuf);
9477                                 rc = -ENOMEM;
9478                                 goto release_out;
9479                         }
9480                         list_add_tail(&dmabuf->list, &dma_buffer_list);
9481                 }
9482                 while (offset < fw->size) {
9483                         temp_offset = offset;
9484                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
9485                                 if (temp_offset + SLI4_PAGE_SIZE > fw->size) {
9486                                         memcpy(dmabuf->virt,
9487                                                fw->data + temp_offset,
9488                                                fw->size - temp_offset);
9489                                         temp_offset = fw->size;
9490                                         break;
9491                                 }
9492                                 memcpy(dmabuf->virt, fw->data + temp_offset,
9493                                        SLI4_PAGE_SIZE);
9494                                 temp_offset += SLI4_PAGE_SIZE;
9495                         }
9496                         rc = lpfc_wr_object(phba, &dma_buffer_list,
9497                                     (fw->size - offset), &offset);
9498                         if (rc)
9499                                 goto release_out;
9500                 }
9501                 rc = offset;
9502         }
9503
9504 release_out:
9505         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
9506                 list_del(&dmabuf->list);
9507                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
9508                                   dmabuf->virt, dmabuf->phys);
9509                 kfree(dmabuf);
9510         }
9511         release_firmware(fw);
9512 out:
9513         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9514                         "3024 Firmware update done: %d.\n", rc);
9515         return;
9516 }
9517
9518 /**
9519  * lpfc_sli4_request_firmware_update - Request linux generic firmware upgrade
9520  * @phba: pointer to lpfc hba data structure.
9521  *
9522  * This routine is called to perform Linux generic firmware upgrade on device
9523  * that supports such feature.
9524  **/
9525 int
9526 lpfc_sli4_request_firmware_update(struct lpfc_hba *phba, uint8_t fw_upgrade)
9527 {
9528         uint8_t file_name[ELX_MODEL_NAME_SIZE];
9529         int ret;
9530         const struct firmware *fw;
9531
9532         /* Only supported on SLI4 interface type 2 for now */
9533         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
9534             LPFC_SLI_INTF_IF_TYPE_2)
9535                 return -EPERM;
9536
9537         snprintf(file_name, ELX_MODEL_NAME_SIZE, "%s.grp", phba->ModelName);
9538
9539         if (fw_upgrade == INT_FW_UPGRADE) {
9540                 ret = request_firmware_nowait(THIS_MODULE, FW_ACTION_HOTPLUG,
9541                                         file_name, &phba->pcidev->dev,
9542                                         GFP_KERNEL, (void *)phba,
9543                                         lpfc_write_firmware);
9544         } else if (fw_upgrade == RUN_FW_UPGRADE) {
9545                 ret = request_firmware(&fw, file_name, &phba->pcidev->dev);
9546                 if (!ret)
9547                         lpfc_write_firmware(fw, (void *)phba);
9548         } else {
9549                 ret = -EINVAL;
9550         }
9551
9552         return ret;
9553 }
9554
9555 /**
9556  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
9557  * @pdev: pointer to PCI device
9558  * @pid: pointer to PCI device identifier
9559  *
9560  * This routine is called from the kernel's PCI subsystem to device with
9561  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9562  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
9563  * information of the device and driver to see if the driver state that it
9564  * can support this kind of device. If the match is successful, the driver
9565  * core invokes this routine. If this routine determines it can claim the HBA,
9566  * it does all the initialization that it needs to do to handle the HBA
9567  * properly.
9568  *
9569  * Return code
9570  *      0 - driver can claim the device
9571  *      negative value - driver can not claim the device
9572  **/
9573 static int
9574 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
9575 {
9576         struct lpfc_hba   *phba;
9577         struct lpfc_vport *vport = NULL;
9578         struct Scsi_Host  *shost = NULL;
9579         int error, ret;
9580         uint32_t cfg_mode, intr_mode;
9581         int adjusted_fcp_io_channel;
9582
9583         /* Allocate memory for HBA structure */
9584         phba = lpfc_hba_alloc(pdev);
9585         if (!phba)
9586                 return -ENOMEM;
9587
9588         /* Perform generic PCI device enabling operation */
9589         error = lpfc_enable_pci_dev(phba);
9590         if (error)
9591                 goto out_free_phba;
9592
9593         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
9594         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
9595         if (error)
9596                 goto out_disable_pci_dev;
9597
9598         /* Set up SLI-4 specific device PCI memory space */
9599         error = lpfc_sli4_pci_mem_setup(phba);
9600         if (error) {
9601                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9602                                 "1410 Failed to set up pci memory space.\n");
9603                 goto out_disable_pci_dev;
9604         }
9605
9606         /* Set up phase-1 common device driver resources */
9607         error = lpfc_setup_driver_resource_phase1(phba);
9608         if (error) {
9609                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9610                                 "1411 Failed to set up driver resource.\n");
9611                 goto out_unset_pci_mem_s4;
9612         }
9613
9614         /* Set up SLI-4 Specific device driver resources */
9615         error = lpfc_sli4_driver_resource_setup(phba);
9616         if (error) {
9617                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9618                                 "1412 Failed to set up driver resource.\n");
9619                 goto out_unset_pci_mem_s4;
9620         }
9621
9622         /* Initialize and populate the iocb list per host */
9623
9624         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9625                         "2821 initialize iocb list %d.\n",
9626                         phba->cfg_iocb_cnt*1024);
9627         error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
9628
9629         if (error) {
9630                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9631                                 "1413 Failed to initialize iocb list.\n");
9632                 goto out_unset_driver_resource_s4;
9633         }
9634
9635         INIT_LIST_HEAD(&phba->active_rrq_list);
9636         INIT_LIST_HEAD(&phba->fcf.fcf_pri_list);
9637
9638         /* Set up common device driver resources */
9639         error = lpfc_setup_driver_resource_phase2(phba);
9640         if (error) {
9641                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9642                                 "1414 Failed to set up driver resource.\n");
9643                 goto out_free_iocb_list;
9644         }
9645
9646         /* Get the default values for Model Name and Description */
9647         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
9648
9649         /* Create SCSI host to the physical port */
9650         error = lpfc_create_shost(phba);
9651         if (error) {
9652                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9653                                 "1415 Failed to create scsi host.\n");
9654                 goto out_unset_driver_resource;
9655         }
9656
9657         /* Configure sysfs attributes */
9658         vport = phba->pport;
9659         error = lpfc_alloc_sysfs_attr(vport);
9660         if (error) {
9661                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9662                                 "1416 Failed to allocate sysfs attr\n");
9663                 goto out_destroy_shost;
9664         }
9665
9666         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
9667         /* Now, trying to enable interrupt and bring up the device */
9668         cfg_mode = phba->cfg_use_msi;
9669
9670         /* Put device to a known state before enabling interrupt */
9671         lpfc_stop_port(phba);
9672         /* Configure and enable interrupt */
9673         intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
9674         if (intr_mode == LPFC_INTR_ERROR) {
9675                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9676                                 "0426 Failed to enable interrupt.\n");
9677                 error = -ENODEV;
9678                 goto out_free_sysfs_attr;
9679         }
9680         /* Default to single EQ for non-MSI-X */
9681         if (phba->intr_type != MSIX)
9682                 adjusted_fcp_io_channel = 1;
9683         else
9684                 adjusted_fcp_io_channel = phba->cfg_fcp_io_channel;
9685         phba->cfg_fcp_io_channel = adjusted_fcp_io_channel;
9686         /* Set up SLI-4 HBA */
9687         if (lpfc_sli4_hba_setup(phba)) {
9688                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9689                                 "1421 Failed to set up hba\n");
9690                 error = -ENODEV;
9691                 goto out_disable_intr;
9692         }
9693
9694         /* Log the current active interrupt mode */
9695         phba->intr_mode = intr_mode;
9696         lpfc_log_intr_mode(phba, intr_mode);
9697
9698         /* Perform post initialization setup */
9699         lpfc_post_init_setup(phba);
9700
9701         /* check for firmware upgrade or downgrade */
9702         if (phba->cfg_request_firmware_upgrade)
9703                 ret = lpfc_sli4_request_firmware_update(phba, INT_FW_UPGRADE);
9704
9705         /* Check if there are static vports to be created. */
9706         lpfc_create_static_vport(phba);
9707         return 0;
9708
9709 out_disable_intr:
9710         lpfc_sli4_disable_intr(phba);
9711 out_free_sysfs_attr:
9712         lpfc_free_sysfs_attr(vport);
9713 out_destroy_shost:
9714         lpfc_destroy_shost(phba);
9715 out_unset_driver_resource:
9716         lpfc_unset_driver_resource_phase2(phba);
9717 out_free_iocb_list:
9718         lpfc_free_iocb_list(phba);
9719 out_unset_driver_resource_s4:
9720         lpfc_sli4_driver_resource_unset(phba);
9721 out_unset_pci_mem_s4:
9722         lpfc_sli4_pci_mem_unset(phba);
9723 out_disable_pci_dev:
9724         lpfc_disable_pci_dev(phba);
9725         if (shost)
9726                 scsi_host_put(shost);
9727 out_free_phba:
9728         lpfc_hba_free(phba);
9729         return error;
9730 }
9731
9732 /**
9733  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
9734  * @pdev: pointer to PCI device
9735  *
9736  * This routine is called from the kernel's PCI subsystem to device with
9737  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9738  * removed from PCI bus, it performs all the necessary cleanup for the HBA
9739  * device to be removed from the PCI subsystem properly.
9740  **/
9741 static void
9742 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
9743 {
9744         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9745         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
9746         struct lpfc_vport **vports;
9747         struct lpfc_hba *phba = vport->phba;
9748         int i;
9749
9750         /* Mark the device unloading flag */
9751         spin_lock_irq(&phba->hbalock);
9752         vport->load_flag |= FC_UNLOADING;
9753         spin_unlock_irq(&phba->hbalock);
9754
9755         /* Free the HBA sysfs attributes */
9756         lpfc_free_sysfs_attr(vport);
9757
9758         /* Release all the vports against this physical port */
9759         vports = lpfc_create_vport_work_array(phba);
9760         if (vports != NULL)
9761                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
9762                         if (vports[i]->port_type == LPFC_PHYSICAL_PORT)
9763                                 continue;
9764                         fc_vport_terminate(vports[i]->fc_vport);
9765                 }
9766         lpfc_destroy_vport_work_array(phba, vports);
9767
9768         /* Remove FC host and then SCSI host with the physical port */
9769         fc_remove_host(shost);
9770         scsi_remove_host(shost);
9771
9772         /* Perform cleanup on the physical port */
9773         lpfc_cleanup(vport);
9774
9775         /*
9776          * Bring down the SLI Layer. This step disables all interrupts,
9777          * clears the rings, discards all mailbox commands, and resets
9778          * the HBA FCoE function.
9779          */
9780         lpfc_debugfs_terminate(vport);
9781         lpfc_sli4_hba_unset(phba);
9782
9783         spin_lock_irq(&phba->hbalock);
9784         list_del_init(&vport->listentry);
9785         spin_unlock_irq(&phba->hbalock);
9786
9787         /* Perform scsi free before driver resource_unset since scsi
9788          * buffers are released to their corresponding pools here.
9789          */
9790         lpfc_scsi_free(phba);
9791
9792         lpfc_sli4_driver_resource_unset(phba);
9793
9794         /* Unmap adapter Control and Doorbell registers */
9795         lpfc_sli4_pci_mem_unset(phba);
9796
9797         /* Release PCI resources and disable device's PCI function */
9798         scsi_host_put(shost);
9799         lpfc_disable_pci_dev(phba);
9800
9801         /* Finally, free the driver's device data structure */
9802         lpfc_hba_free(phba);
9803
9804         return;
9805 }
9806
9807 /**
9808  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
9809  * @pdev: pointer to PCI device
9810  * @msg: power management message
9811  *
9812  * This routine is called from the kernel's PCI subsystem to support system
9813  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
9814  * this method, it quiesces the device by stopping the driver's worker
9815  * thread for the device, turning off device's interrupt and DMA, and bring
9816  * the device offline. Note that as the driver implements the minimum PM
9817  * requirements to a power-aware driver's PM support for suspend/resume -- all
9818  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
9819  * method call will be treated as SUSPEND and the driver will fully
9820  * reinitialize its device during resume() method call, the driver will set
9821  * device to PCI_D3hot state in PCI config space instead of setting it
9822  * according to the @msg provided by the PM.
9823  *
9824  * Return code
9825  *      0 - driver suspended the device
9826  *      Error otherwise
9827  **/
9828 static int
9829 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
9830 {
9831         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9832         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9833
9834         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9835                         "2843 PCI device Power Management suspend.\n");
9836
9837         /* Bring down the device */
9838         lpfc_offline_prep(phba, LPFC_MBX_WAIT);
9839         lpfc_offline(phba);
9840         kthread_stop(phba->worker_thread);
9841
9842         /* Disable interrupt from device */
9843         lpfc_sli4_disable_intr(phba);
9844         lpfc_sli4_queue_destroy(phba);
9845
9846         /* Save device state to PCI config space */
9847         pci_save_state(pdev);
9848         pci_set_power_state(pdev, PCI_D3hot);
9849
9850         return 0;
9851 }
9852
9853 /**
9854  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
9855  * @pdev: pointer to PCI device
9856  *
9857  * This routine is called from the kernel's PCI subsystem to support system
9858  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
9859  * this method, it restores the device's PCI config space state and fully
9860  * reinitializes the device and brings it online. Note that as the driver
9861  * implements the minimum PM requirements to a power-aware driver's PM for
9862  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
9863  * to the suspend() method call will be treated as SUSPEND and the driver
9864  * will fully reinitialize its device during resume() method call, the device
9865  * will be set to PCI_D0 directly in PCI config space before restoring the
9866  * state.
9867  *
9868  * Return code
9869  *      0 - driver suspended the device
9870  *      Error otherwise
9871  **/
9872 static int
9873 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
9874 {
9875         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9876         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9877         uint32_t intr_mode;
9878         int error;
9879
9880         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9881                         "0292 PCI device Power Management resume.\n");
9882
9883         /* Restore device state from PCI config space */
9884         pci_set_power_state(pdev, PCI_D0);
9885         pci_restore_state(pdev);
9886
9887         /*
9888          * As the new kernel behavior of pci_restore_state() API call clears
9889          * device saved_state flag, need to save the restored state again.
9890          */
9891         pci_save_state(pdev);
9892
9893         if (pdev->is_busmaster)
9894                 pci_set_master(pdev);
9895
9896          /* Startup the kernel thread for this host adapter. */
9897         phba->worker_thread = kthread_run(lpfc_do_work, phba,
9898                                         "lpfc_worker_%d", phba->brd_no);
9899         if (IS_ERR(phba->worker_thread)) {
9900                 error = PTR_ERR(phba->worker_thread);
9901                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9902                                 "0293 PM resume failed to start worker "
9903                                 "thread: error=x%x.\n", error);
9904                 return error;
9905         }
9906
9907         /* Configure and enable interrupt */
9908         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9909         if (intr_mode == LPFC_INTR_ERROR) {
9910                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9911                                 "0294 PM resume Failed to enable interrupt\n");
9912                 return -EIO;
9913         } else
9914                 phba->intr_mode = intr_mode;
9915
9916         /* Restart HBA and bring it online */
9917         lpfc_sli_brdrestart(phba);
9918         lpfc_online(phba);
9919
9920         /* Log the current active interrupt mode */
9921         lpfc_log_intr_mode(phba, phba->intr_mode);
9922
9923         return 0;
9924 }
9925
9926 /**
9927  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
9928  * @phba: pointer to lpfc hba data structure.
9929  *
9930  * This routine is called to prepare the SLI4 device for PCI slot recover. It
9931  * aborts all the outstanding SCSI I/Os to the pci device.
9932  **/
9933 static void
9934 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
9935 {
9936         struct lpfc_sli *psli = &phba->sli;
9937         struct lpfc_sli_ring  *pring;
9938
9939         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9940                         "2828 PCI channel I/O abort preparing for recovery\n");
9941         /*
9942          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
9943          * and let the SCSI mid-layer to retry them to recover.
9944          */
9945         pring = &psli->ring[psli->fcp_ring];
9946         lpfc_sli_abort_iocb_ring(phba, pring);
9947 }
9948
9949 /**
9950  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
9951  * @phba: pointer to lpfc hba data structure.
9952  *
9953  * This routine is called to prepare the SLI4 device for PCI slot reset. It
9954  * disables the device interrupt and pci device, and aborts the internal FCP
9955  * pending I/Os.
9956  **/
9957 static void
9958 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
9959 {
9960         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9961                         "2826 PCI channel disable preparing for reset\n");
9962
9963         /* Block any management I/Os to the device */
9964         lpfc_block_mgmt_io(phba, LPFC_MBX_NO_WAIT);
9965
9966         /* Block all SCSI devices' I/Os on the host */
9967         lpfc_scsi_dev_block(phba);
9968
9969         /* stop all timers */
9970         lpfc_stop_hba_timers(phba);
9971
9972         /* Disable interrupt and pci device */
9973         lpfc_sli4_disable_intr(phba);
9974         lpfc_sli4_queue_destroy(phba);
9975         pci_disable_device(phba->pcidev);
9976
9977         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
9978         lpfc_sli_flush_fcp_rings(phba);
9979 }
9980
9981 /**
9982  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
9983  * @phba: pointer to lpfc hba data structure.
9984  *
9985  * This routine is called to prepare the SLI4 device for PCI slot permanently
9986  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
9987  * pending I/Os.
9988  **/
9989 static void
9990 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
9991 {
9992         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9993                         "2827 PCI channel permanent disable for failure\n");
9994
9995         /* Block all SCSI devices' I/Os on the host */
9996         lpfc_scsi_dev_block(phba);
9997
9998         /* stop all timers */
9999         lpfc_stop_hba_timers(phba);
10000
10001         /* Clean up all driver's outstanding SCSI I/Os */
10002         lpfc_sli_flush_fcp_rings(phba);
10003 }
10004
10005 /**
10006  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
10007  * @pdev: pointer to PCI device.
10008  * @state: the current PCI connection state.
10009  *
10010  * This routine is called from the PCI subsystem for error handling to device
10011  * with SLI-4 interface spec. This function is called by the PCI subsystem
10012  * after a PCI bus error affecting this device has been detected. When this
10013  * function is invoked, it will need to stop all the I/Os and interrupt(s)
10014  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
10015  * for the PCI subsystem to perform proper recovery as desired.
10016  *
10017  * Return codes
10018  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
10019  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
10020  **/
10021 static pci_ers_result_t
10022 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
10023 {
10024         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10025         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10026
10027         switch (state) {
10028         case pci_channel_io_normal:
10029                 /* Non-fatal error, prepare for recovery */
10030                 lpfc_sli4_prep_dev_for_recover(phba);
10031                 return PCI_ERS_RESULT_CAN_RECOVER;
10032         case pci_channel_io_frozen:
10033                 /* Fatal error, prepare for slot reset */
10034                 lpfc_sli4_prep_dev_for_reset(phba);
10035                 return PCI_ERS_RESULT_NEED_RESET;
10036         case pci_channel_io_perm_failure:
10037                 /* Permanent failure, prepare for device down */
10038                 lpfc_sli4_prep_dev_for_perm_failure(phba);
10039                 return PCI_ERS_RESULT_DISCONNECT;
10040         default:
10041                 /* Unknown state, prepare and request slot reset */
10042                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10043                                 "2825 Unknown PCI error state: x%x\n", state);
10044                 lpfc_sli4_prep_dev_for_reset(phba);
10045                 return PCI_ERS_RESULT_NEED_RESET;
10046         }
10047 }
10048
10049 /**
10050  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
10051  * @pdev: pointer to PCI device.
10052  *
10053  * This routine is called from the PCI subsystem for error handling to device
10054  * with SLI-4 interface spec. It is called after PCI bus has been reset to
10055  * restart the PCI card from scratch, as if from a cold-boot. During the
10056  * PCI subsystem error recovery, after the driver returns
10057  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
10058  * recovery and then call this routine before calling the .resume method to
10059  * recover the device. This function will initialize the HBA device, enable
10060  * the interrupt, but it will just put the HBA to offline state without
10061  * passing any I/O traffic.
10062  *
10063  * Return codes
10064  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
10065  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
10066  */
10067 static pci_ers_result_t
10068 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
10069 {
10070         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10071         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10072         struct lpfc_sli *psli = &phba->sli;
10073         uint32_t intr_mode;
10074
10075         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
10076         if (pci_enable_device_mem(pdev)) {
10077                 printk(KERN_ERR "lpfc: Cannot re-enable "
10078                         "PCI device after reset.\n");
10079                 return PCI_ERS_RESULT_DISCONNECT;
10080         }
10081
10082         pci_restore_state(pdev);
10083
10084         /*
10085          * As the new kernel behavior of pci_restore_state() API call clears
10086          * device saved_state flag, need to save the restored state again.
10087          */
10088         pci_save_state(pdev);
10089
10090         if (pdev->is_busmaster)
10091                 pci_set_master(pdev);
10092
10093         spin_lock_irq(&phba->hbalock);
10094         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
10095         spin_unlock_irq(&phba->hbalock);
10096
10097         /* Configure and enable interrupt */
10098         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
10099         if (intr_mode == LPFC_INTR_ERROR) {
10100                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10101                                 "2824 Cannot re-enable interrupt after "
10102                                 "slot reset.\n");
10103                 return PCI_ERS_RESULT_DISCONNECT;
10104         } else
10105                 phba->intr_mode = intr_mode;
10106
10107         /* Log the current active interrupt mode */
10108         lpfc_log_intr_mode(phba, phba->intr_mode);
10109
10110         return PCI_ERS_RESULT_RECOVERED;
10111 }
10112
10113 /**
10114  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
10115  * @pdev: pointer to PCI device
10116  *
10117  * This routine is called from the PCI subsystem for error handling to device
10118  * with SLI-4 interface spec. It is called when kernel error recovery tells
10119  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
10120  * error recovery. After this call, traffic can start to flow from this device
10121  * again.
10122  **/
10123 static void
10124 lpfc_io_resume_s4(struct pci_dev *pdev)
10125 {
10126         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10127         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10128
10129         /*
10130          * In case of slot reset, as function reset is performed through
10131          * mailbox command which needs DMA to be enabled, this operation
10132          * has to be moved to the io resume phase. Taking device offline
10133          * will perform the necessary cleanup.
10134          */
10135         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
10136                 /* Perform device reset */
10137                 lpfc_offline_prep(phba, LPFC_MBX_WAIT);
10138                 lpfc_offline(phba);
10139                 lpfc_sli_brdrestart(phba);
10140                 /* Bring the device back online */
10141                 lpfc_online(phba);
10142         }
10143
10144         /* Clean up Advanced Error Reporting (AER) if needed */
10145         if (phba->hba_flag & HBA_AER_ENABLED)
10146                 pci_cleanup_aer_uncorrect_error_status(pdev);
10147 }
10148
10149 /**
10150  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
10151  * @pdev: pointer to PCI device
10152  * @pid: pointer to PCI device identifier
10153  *
10154  * This routine is to be registered to the kernel's PCI subsystem. When an
10155  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
10156  * at PCI device-specific information of the device and driver to see if the
10157  * driver state that it can support this kind of device. If the match is
10158  * successful, the driver core invokes this routine. This routine dispatches
10159  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
10160  * do all the initialization that it needs to do to handle the HBA device
10161  * properly.
10162  *
10163  * Return code
10164  *      0 - driver can claim the device
10165  *      negative value - driver can not claim the device
10166  **/
10167 static int
10168 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
10169 {
10170         int rc;
10171         struct lpfc_sli_intf intf;
10172
10173         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
10174                 return -ENODEV;
10175
10176         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
10177             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
10178                 rc = lpfc_pci_probe_one_s4(pdev, pid);
10179         else
10180                 rc = lpfc_pci_probe_one_s3(pdev, pid);
10181
10182         return rc;
10183 }
10184
10185 /**
10186  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
10187  * @pdev: pointer to PCI device
10188  *
10189  * This routine is to be registered to the kernel's PCI subsystem. When an
10190  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
10191  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
10192  * remove routine, which will perform all the necessary cleanup for the
10193  * device to be removed from the PCI subsystem properly.
10194  **/
10195 static void
10196 lpfc_pci_remove_one(struct pci_dev *pdev)
10197 {
10198         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10199         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10200
10201         switch (phba->pci_dev_grp) {
10202         case LPFC_PCI_DEV_LP:
10203                 lpfc_pci_remove_one_s3(pdev);
10204                 break;
10205         case LPFC_PCI_DEV_OC:
10206                 lpfc_pci_remove_one_s4(pdev);
10207                 break;
10208         default:
10209                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10210                                 "1424 Invalid PCI device group: 0x%x\n",
10211                                 phba->pci_dev_grp);
10212                 break;
10213         }
10214         return;
10215 }
10216
10217 /**
10218  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
10219  * @pdev: pointer to PCI device
10220  * @msg: power management message
10221  *
10222  * This routine is to be registered to the kernel's PCI subsystem to support
10223  * system Power Management (PM). When PM invokes this method, it dispatches
10224  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
10225  * suspend the device.
10226  *
10227  * Return code
10228  *      0 - driver suspended the device
10229  *      Error otherwise
10230  **/
10231 static int
10232 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
10233 {
10234         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10235         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10236         int rc = -ENODEV;
10237
10238         switch (phba->pci_dev_grp) {
10239         case LPFC_PCI_DEV_LP:
10240                 rc = lpfc_pci_suspend_one_s3(pdev, msg);
10241                 break;
10242         case LPFC_PCI_DEV_OC:
10243                 rc = lpfc_pci_suspend_one_s4(pdev, msg);
10244                 break;
10245         default:
10246                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10247                                 "1425 Invalid PCI device group: 0x%x\n",
10248                                 phba->pci_dev_grp);
10249                 break;
10250         }
10251         return rc;
10252 }
10253
10254 /**
10255  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
10256  * @pdev: pointer to PCI device
10257  *
10258  * This routine is to be registered to the kernel's PCI subsystem to support
10259  * system Power Management (PM). When PM invokes this method, it dispatches
10260  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
10261  * resume the device.
10262  *
10263  * Return code
10264  *      0 - driver suspended the device
10265  *      Error otherwise
10266  **/
10267 static int
10268 lpfc_pci_resume_one(struct pci_dev *pdev)
10269 {
10270         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10271         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10272         int rc = -ENODEV;
10273
10274         switch (phba->pci_dev_grp) {
10275         case LPFC_PCI_DEV_LP:
10276                 rc = lpfc_pci_resume_one_s3(pdev);
10277                 break;
10278         case LPFC_PCI_DEV_OC:
10279                 rc = lpfc_pci_resume_one_s4(pdev);
10280                 break;
10281         default:
10282                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10283                                 "1426 Invalid PCI device group: 0x%x\n",
10284                                 phba->pci_dev_grp);
10285                 break;
10286         }
10287         return rc;
10288 }
10289
10290 /**
10291  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
10292  * @pdev: pointer to PCI device.
10293  * @state: the current PCI connection state.
10294  *
10295  * This routine is registered to the PCI subsystem for error handling. This
10296  * function is called by the PCI subsystem after a PCI bus error affecting
10297  * this device has been detected. When this routine is invoked, it dispatches
10298  * the action to the proper SLI-3 or SLI-4 device error detected handling
10299  * routine, which will perform the proper error detected operation.
10300  *
10301  * Return codes
10302  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
10303  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
10304  **/
10305 static pci_ers_result_t
10306 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
10307 {
10308         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10309         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10310         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
10311
10312         switch (phba->pci_dev_grp) {
10313         case LPFC_PCI_DEV_LP:
10314                 rc = lpfc_io_error_detected_s3(pdev, state);
10315                 break;
10316         case LPFC_PCI_DEV_OC:
10317                 rc = lpfc_io_error_detected_s4(pdev, state);
10318                 break;
10319         default:
10320                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10321                                 "1427 Invalid PCI device group: 0x%x\n",
10322                                 phba->pci_dev_grp);
10323                 break;
10324         }
10325         return rc;
10326 }
10327
10328 /**
10329  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
10330  * @pdev: pointer to PCI device.
10331  *
10332  * This routine is registered to the PCI subsystem for error handling. This
10333  * function is called after PCI bus has been reset to restart the PCI card
10334  * from scratch, as if from a cold-boot. When this routine is invoked, it
10335  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
10336  * routine, which will perform the proper device reset.
10337  *
10338  * Return codes
10339  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
10340  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
10341  **/
10342 static pci_ers_result_t
10343 lpfc_io_slot_reset(struct pci_dev *pdev)
10344 {
10345         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10346         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10347         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
10348
10349         switch (phba->pci_dev_grp) {
10350         case LPFC_PCI_DEV_LP:
10351                 rc = lpfc_io_slot_reset_s3(pdev);
10352                 break;
10353         case LPFC_PCI_DEV_OC:
10354                 rc = lpfc_io_slot_reset_s4(pdev);
10355                 break;
10356         default:
10357                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10358                                 "1428 Invalid PCI device group: 0x%x\n",
10359                                 phba->pci_dev_grp);
10360                 break;
10361         }
10362         return rc;
10363 }
10364
10365 /**
10366  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
10367  * @pdev: pointer to PCI device
10368  *
10369  * This routine is registered to the PCI subsystem for error handling. It
10370  * is called when kernel error recovery tells the lpfc driver that it is
10371  * OK to resume normal PCI operation after PCI bus error recovery. When
10372  * this routine is invoked, it dispatches the action to the proper SLI-3
10373  * or SLI-4 device io_resume routine, which will resume the device operation.
10374  **/
10375 static void
10376 lpfc_io_resume(struct pci_dev *pdev)
10377 {
10378         struct Scsi_Host *shost = pci_get_drvdata(pdev);
10379         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
10380
10381         switch (phba->pci_dev_grp) {
10382         case LPFC_PCI_DEV_LP:
10383                 lpfc_io_resume_s3(pdev);
10384                 break;
10385         case LPFC_PCI_DEV_OC:
10386                 lpfc_io_resume_s4(pdev);
10387                 break;
10388         default:
10389                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10390                                 "1429 Invalid PCI device group: 0x%x\n",
10391                                 phba->pci_dev_grp);
10392                 break;
10393         }
10394         return;
10395 }
10396
10397 /**
10398  * lpfc_mgmt_open - method called when 'lpfcmgmt' is opened from userspace
10399  * @inode: pointer to the inode representing the lpfcmgmt device
10400  * @filep: pointer to the file representing the open lpfcmgmt device
10401  *
10402  * This routine puts a reference count on the lpfc module whenever the
10403  * character device is opened
10404  **/
10405 static int
10406 lpfc_mgmt_open(struct inode *inode, struct file *filep)
10407 {
10408         try_module_get(THIS_MODULE);
10409         return 0;
10410 }
10411
10412 /**
10413  * lpfc_mgmt_release - method called when 'lpfcmgmt' is closed in userspace
10414  * @inode: pointer to the inode representing the lpfcmgmt device
10415  * @filep: pointer to the file representing the open lpfcmgmt device
10416  *
10417  * This routine removes a reference count from the lpfc module when the
10418  * character device is closed
10419  **/
10420 static int
10421 lpfc_mgmt_release(struct inode *inode, struct file *filep)
10422 {
10423         module_put(THIS_MODULE);
10424         return 0;
10425 }
10426
10427 static struct pci_device_id lpfc_id_table[] = {
10428         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
10429                 PCI_ANY_ID, PCI_ANY_ID, },
10430         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
10431                 PCI_ANY_ID, PCI_ANY_ID, },
10432         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
10433                 PCI_ANY_ID, PCI_ANY_ID, },
10434         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
10435                 PCI_ANY_ID, PCI_ANY_ID, },
10436         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
10437                 PCI_ANY_ID, PCI_ANY_ID, },
10438         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
10439                 PCI_ANY_ID, PCI_ANY_ID, },
10440         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
10441                 PCI_ANY_ID, PCI_ANY_ID, },
10442         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
10443                 PCI_ANY_ID, PCI_ANY_ID, },
10444         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
10445                 PCI_ANY_ID, PCI_ANY_ID, },
10446         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
10447                 PCI_ANY_ID, PCI_ANY_ID, },
10448         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
10449                 PCI_ANY_ID, PCI_ANY_ID, },
10450         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
10451                 PCI_ANY_ID, PCI_ANY_ID, },
10452         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
10453                 PCI_ANY_ID, PCI_ANY_ID, },
10454         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
10455                 PCI_ANY_ID, PCI_ANY_ID, },
10456         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
10457                 PCI_ANY_ID, PCI_ANY_ID, },
10458         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
10459                 PCI_ANY_ID, PCI_ANY_ID, },
10460         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
10461                 PCI_ANY_ID, PCI_ANY_ID, },
10462         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
10463                 PCI_ANY_ID, PCI_ANY_ID, },
10464         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
10465                 PCI_ANY_ID, PCI_ANY_ID, },
10466         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
10467                 PCI_ANY_ID, PCI_ANY_ID, },
10468         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
10469                 PCI_ANY_ID, PCI_ANY_ID, },
10470         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
10471                 PCI_ANY_ID, PCI_ANY_ID, },
10472         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
10473                 PCI_ANY_ID, PCI_ANY_ID, },
10474         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
10475                 PCI_ANY_ID, PCI_ANY_ID, },
10476         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
10477                 PCI_ANY_ID, PCI_ANY_ID, },
10478         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
10479                 PCI_ANY_ID, PCI_ANY_ID, },
10480         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
10481                 PCI_ANY_ID, PCI_ANY_ID, },
10482         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
10483                 PCI_ANY_ID, PCI_ANY_ID, },
10484         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
10485                 PCI_ANY_ID, PCI_ANY_ID, },
10486         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
10487                 PCI_ANY_ID, PCI_ANY_ID, },
10488         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
10489                 PCI_ANY_ID, PCI_ANY_ID, },
10490         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
10491                 PCI_ANY_ID, PCI_ANY_ID, },
10492         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
10493                 PCI_ANY_ID, PCI_ANY_ID, },
10494         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
10495                 PCI_ANY_ID, PCI_ANY_ID, },
10496         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
10497                 PCI_ANY_ID, PCI_ANY_ID, },
10498         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
10499                 PCI_ANY_ID, PCI_ANY_ID, },
10500         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
10501                 PCI_ANY_ID, PCI_ANY_ID, },
10502         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK,
10503                 PCI_ANY_ID, PCI_ANY_ID, },
10504         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT,
10505                 PCI_ANY_ID, PCI_ANY_ID, },
10506         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
10507                 PCI_ANY_ID, PCI_ANY_ID, },
10508         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
10509                 PCI_ANY_ID, PCI_ANY_ID, },
10510         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC,
10511                 PCI_ANY_ID, PCI_ANY_ID, },
10512         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE,
10513                 PCI_ANY_ID, PCI_ANY_ID, },
10514         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF,
10515                 PCI_ANY_ID, PCI_ANY_ID, },
10516         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF,
10517                 PCI_ANY_ID, PCI_ANY_ID, },
10518         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SKYHAWK,
10519                 PCI_ANY_ID, PCI_ANY_ID, },
10520         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SKYHAWK_VF,
10521                 PCI_ANY_ID, PCI_ANY_ID, },
10522         { 0 }
10523 };
10524
10525 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
10526
10527 static const struct pci_error_handlers lpfc_err_handler = {
10528         .error_detected = lpfc_io_error_detected,
10529         .slot_reset = lpfc_io_slot_reset,
10530         .resume = lpfc_io_resume,
10531 };
10532
10533 static struct pci_driver lpfc_driver = {
10534         .name           = LPFC_DRIVER_NAME,
10535         .id_table       = lpfc_id_table,
10536         .probe          = lpfc_pci_probe_one,
10537         .remove         = lpfc_pci_remove_one,
10538         .suspend        = lpfc_pci_suspend_one,
10539         .resume         = lpfc_pci_resume_one,
10540         .err_handler    = &lpfc_err_handler,
10541 };
10542
10543 static const struct file_operations lpfc_mgmt_fop = {
10544         .open = lpfc_mgmt_open,
10545         .release = lpfc_mgmt_release,
10546 };
10547
10548 static struct miscdevice lpfc_mgmt_dev = {
10549         .minor = MISC_DYNAMIC_MINOR,
10550         .name = "lpfcmgmt",
10551         .fops = &lpfc_mgmt_fop,
10552 };
10553
10554 /**
10555  * lpfc_init - lpfc module initialization routine
10556  *
10557  * This routine is to be invoked when the lpfc module is loaded into the
10558  * kernel. The special kernel macro module_init() is used to indicate the
10559  * role of this routine to the kernel as lpfc module entry point.
10560  *
10561  * Return codes
10562  *   0 - successful
10563  *   -ENOMEM - FC attach transport failed
10564  *   all others - failed
10565  */
10566 static int __init
10567 lpfc_init(void)
10568 {
10569         int error = 0;
10570
10571         printk(LPFC_MODULE_DESC "\n");
10572         printk(LPFC_COPYRIGHT "\n");
10573
10574         error = misc_register(&lpfc_mgmt_dev);
10575         if (error)
10576                 printk(KERN_ERR "Could not register lpfcmgmt device, "
10577                         "misc_register returned with status %d", error);
10578
10579         if (lpfc_enable_npiv) {
10580                 lpfc_transport_functions.vport_create = lpfc_vport_create;
10581                 lpfc_transport_functions.vport_delete = lpfc_vport_delete;
10582         }
10583         lpfc_transport_template =
10584                                 fc_attach_transport(&lpfc_transport_functions);
10585         if (lpfc_transport_template == NULL)
10586                 return -ENOMEM;
10587         if (lpfc_enable_npiv) {
10588                 lpfc_vport_transport_template =
10589                         fc_attach_transport(&lpfc_vport_transport_functions);
10590                 if (lpfc_vport_transport_template == NULL) {
10591                         fc_release_transport(lpfc_transport_template);
10592                         return -ENOMEM;
10593                 }
10594         }
10595         error = pci_register_driver(&lpfc_driver);
10596         if (error) {
10597                 fc_release_transport(lpfc_transport_template);
10598                 if (lpfc_enable_npiv)
10599                         fc_release_transport(lpfc_vport_transport_template);
10600         }
10601
10602         return error;
10603 }
10604
10605 /**
10606  * lpfc_exit - lpfc module removal routine
10607  *
10608  * This routine is invoked when the lpfc module is removed from the kernel.
10609  * The special kernel macro module_exit() is used to indicate the role of
10610  * this routine to the kernel as lpfc module exit point.
10611  */
10612 static void __exit
10613 lpfc_exit(void)
10614 {
10615         misc_deregister(&lpfc_mgmt_dev);
10616         pci_unregister_driver(&lpfc_driver);
10617         fc_release_transport(lpfc_transport_template);
10618         if (lpfc_enable_npiv)
10619                 fc_release_transport(lpfc_vport_transport_template);
10620         if (_dump_buf_data) {
10621                 printk(KERN_ERR "9062 BLKGRD: freeing %lu pages for "
10622                                 "_dump_buf_data at 0x%p\n",
10623                                 (1L << _dump_buf_data_order), _dump_buf_data);
10624                 free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
10625         }
10626
10627         if (_dump_buf_dif) {
10628                 printk(KERN_ERR "9049 BLKGRD: freeing %lu pages for "
10629                                 "_dump_buf_dif at 0x%p\n",
10630                                 (1L << _dump_buf_dif_order), _dump_buf_dif);
10631                 free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
10632         }
10633 }
10634
10635 module_init(lpfc_init);
10636 module_exit(lpfc_exit);
10637 MODULE_LICENSE("GPL");
10638 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
10639 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
10640 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);