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) 2004-2010 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/kthread.h>
  28 #include <linux/pci.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/ctype.h>
  31 #include <linux/aer.h>
  32 #include <linux/slab.h>
  33
  34 #include <scsi/scsi.h>
  35 #include <scsi/scsi_device.h>
  36 #include <scsi/scsi_host.h>
  37 #include <scsi/scsi_transport_fc.h>
  38
  39 #include "lpfc_hw4.h"
  40 #include "lpfc_hw.h"
  41 #include "lpfc_sli.h"
  42 #include "lpfc_sli4.h"
  43 #include "lpfc_nl.h"
  44 #include "lpfc_disc.h"
  45 #include "lpfc_scsi.h"
  46 #include "lpfc.h"
  47 #include "lpfc_logmsg.h"
  48 #include "lpfc_crtn.h"
  49 #include "lpfc_vport.h"
  50 #include "lpfc_version.h"
  51
  52 char *_dump_buf_data;
  53 unsigned long _dump_buf_data_order;
  54 char *_dump_buf_dif;
  55 unsigned long _dump_buf_dif_order;
  56 spinlock_t _dump_buf_lock;
  57
  58 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  59 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  60 static int lpfc_sli4_queue_create(struct lpfc_hba *);
  61 static void lpfc_sli4_queue_destroy(struct lpfc_hba *);
  62 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  63 static int lpfc_setup_endian_order(struct lpfc_hba *);
  64 static int lpfc_sli4_read_config(struct lpfc_hba *);
  65 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  66 static void lpfc_free_sgl_list(struct lpfc_hba *);
  67 static int lpfc_init_sgl_list(struct lpfc_hba *);
  68 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  69 static void lpfc_free_active_sgl(struct lpfc_hba *);
  70 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  71 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  72 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  73 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  74 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  75
  76 static struct scsi_transport_template *lpfc_transport_template = NULL;
  77 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
  78 static DEFINE_IDR(lpfc_hba_index);
  79
  80 /**
  81  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
  82  * @phba: pointer to lpfc hba data structure.
  83  *
  84  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
  85  * mailbox command. It retrieves the revision information from the HBA and
  86  * collects the Vital Product Data (VPD) about the HBA for preparing the
  87  * configuration of the HBA.
  88  *
  89  * Return codes:
  90  *   0 - success.
  91  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
  92  *   Any other value - indicates an error.
  93  **/
  94 int
  95 lpfc_config_port_prep(struct lpfc_hba *phba)
  96 {
  97         lpfc_vpd_t *vp = &phba->vpd;
  98         int i = 0, rc;
  99         LPFC_MBOXQ_t *pmb;
 100         MAILBOX_t *mb;
 101         char *lpfc_vpd_data = NULL;
 102         uint16_t offset = 0;
 103         static char licensed[56] =
 104                     "key unlock for use with gnu public licensed code only\0";
 105         static int init_key = 1;
 106
 107         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 108         if (!pmb) {
 109                 phba->link_state = LPFC_HBA_ERROR;
 110                 return -ENOMEM;
 111         }
 112
 113         mb = &pmb->u.mb;
 114         phba->link_state = LPFC_INIT_MBX_CMDS;
 115
 116         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 117                 if (init_key) {
 118                         uint32_t *ptext = (uint32_t *) licensed;
 119
 120                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 121                                 *ptext = cpu_to_be32(*ptext);
 122                         init_key = 0;
 123                 }
 124
 125                 lpfc_read_nv(phba, pmb);
 126                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 127                         sizeof (mb->un.varRDnvp.rsvd3));
 128                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 129                          sizeof (licensed));
 130
 131                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 132
 133                 if (rc != MBX_SUCCESS) {
 134                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 135                                         "0324 Config Port initialization "
 136                                         "error, mbxCmd x%x READ_NVPARM, "
 137                                         "mbxStatus x%x\n",
 138                                         mb->mbxCommand, mb->mbxStatus);
 139                         mempool_free(pmb, phba->mbox_mem_pool);
 140                         return -ERESTART;
 141                 }
 142                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 143                        sizeof(phba->wwnn));
 144                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 145                        sizeof(phba->wwpn));
 146         }
 147
 148         phba->sli3_options = 0x0;
 149
 150         /* Setup and issue mailbox READ REV command */
 151         lpfc_read_rev(phba, pmb);
 152         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 153         if (rc != MBX_SUCCESS) {
 154                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 155                                 "0439 Adapter failed to init, mbxCmd x%x "
 156                                 "READ_REV, mbxStatus x%x\n",
 157                                 mb->mbxCommand, mb->mbxStatus);
 158                 mempool_free( pmb, phba->mbox_mem_pool);
 159                 return -ERESTART;
 160         }
 161
 162
 163         /*
 164          * The value of rr must be 1 since the driver set the cv field to 1.
 165          * This setting requires the FW to set all revision fields.
 166          */
 167         if (mb->un.varRdRev.rr == 0) {
 168                 vp->rev.rBit = 0;
 169                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 170                                 "0440 Adapter failed to init, READ_REV has "
 171                                 "missing revision information.\n");
 172                 mempool_free(pmb, phba->mbox_mem_pool);
 173                 return -ERESTART;
 174         }
 175
 176         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 177                 mempool_free(pmb, phba->mbox_mem_pool);
 178                 return -EINVAL;
 179         }
 180
 181         /* Save information as VPD data */
 182         vp->rev.rBit = 1;
 183         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 184         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 185         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 186         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 187         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 188         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 189         vp->rev.smRev = mb->un.varRdRev.smRev;
 190         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 191         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 192         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 193         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 194         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 195         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 196         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 197         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 198
 199         /* If the sli feature level is less then 9, we must
 200          * tear down all RPIs and VPIs on link down if NPIV
 201          * is enabled.
 202          */
 203         if (vp->rev.feaLevelHigh < 9)
 204                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 205
 206         if (lpfc_is_LC_HBA(phba->pcidev->device))
 207                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 208                                                 sizeof (phba->RandomData));
 209
 210         /* Get adapter VPD information */
 211         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 212         if (!lpfc_vpd_data)
 213                 goto out_free_mbox;
 214
 215         do {
 216                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 217                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 218
 219                 if (rc != MBX_SUCCESS) {
 220                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 221                                         "0441 VPD not present on adapter, "
 222                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 223                                         mb->mbxCommand, mb->mbxStatus);
 224                         mb->un.varDmp.word_cnt = 0;
 225                 }
 226                 /* dump mem may return a zero when finished or we got a
 227                  * mailbox error, either way we are done.
 228                  */
 229                 if (mb->un.varDmp.word_cnt == 0)
 230                         break;
 231                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 232                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 233                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 234                                       lpfc_vpd_data + offset,
 235                                       mb->un.varDmp.word_cnt);
 236                 offset += mb->un.varDmp.word_cnt;
 237         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 238         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 239
 240         kfree(lpfc_vpd_data);
 241 out_free_mbox:
 242         mempool_free(pmb, phba->mbox_mem_pool);
 243         return 0;
 244 }
 245
 246 /**
 247  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 248  * @phba: pointer to lpfc hba data structure.
 249  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 250  *
 251  * This is the completion handler for driver's configuring asynchronous event
 252  * mailbox command to the device. If the mailbox command returns successfully,
 253  * it will set internal async event support flag to 1; otherwise, it will
 254  * set internal async event support flag to 0.
 255  **/
 256 static void
 257 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 258 {
 259         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 260                 phba->temp_sensor_support = 1;
 261         else
 262                 phba->temp_sensor_support = 0;
 263         mempool_free(pmboxq, phba->mbox_mem_pool);
 264         return;
 265 }
 266
 267 /**
 268  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 269  * @phba: pointer to lpfc hba data structure.
 270  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 271  *
 272  * This is the completion handler for dump mailbox command for getting
 273  * wake up parameters. When this command complete, the response contain
 274  * Option rom version of the HBA. This function translate the version number
 275  * into a human readable string and store it in OptionROMVersion.
 276  **/
 277 static void
 278 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 279 {
 280         struct prog_id *prg;
 281         uint32_t prog_id_word;
 282         char dist = ' ';
 283         /* character array used for decoding dist type. */
 284         char dist_char[] = "nabx";
 285
 286         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 287                 mempool_free(pmboxq, phba->mbox_mem_pool);
 288                 return;
 289         }
 290
 291         prg = (struct prog_id *) &prog_id_word;
 292
 293         /* word 7 contain option rom version */
 294         prog_id_word = pmboxq->u.mb.un.varWords[7];
 295
 296         /* Decode the Option rom version word to a readable string */
 297         if (prg->dist < 4)
 298                 dist = dist_char[prg->dist];
 299
 300         if ((prg->dist == 3) && (prg->num == 0))
 301                 sprintf(phba->OptionROMVersion, "%d.%d%d",
 302                         prg->ver, prg->rev, prg->lev);
 303         else
 304                 sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
 305                         prg->ver, prg->rev, prg->lev,
 306                         dist, prg->num);
 307         mempool_free(pmboxq, phba->mbox_mem_pool);
 308         return;
 309 }
 310
 311 /**
 312  * lpfc_config_port_post - Perform lpfc initialization after config port
 313  * @phba: pointer to lpfc hba data structure.
 314  *
 315  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 316  * command call. It performs all internal resource and state setups on the
 317  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 318  * ELS ring timers, etc.
 319  *
 320  * Return codes
 321  *   0 - success.
 322  *   Any other value - error.
 323  **/
 324 int
 325 lpfc_config_port_post(struct lpfc_hba *phba)
 326 {
 327         struct lpfc_vport *vport = phba->pport;
 328         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 329         LPFC_MBOXQ_t *pmb;
 330         MAILBOX_t *mb;
 331         struct lpfc_dmabuf *mp;
 332         struct lpfc_sli *psli = &phba->sli;
 333         uint32_t status, timeout;
 334         int i, j;
 335         int rc;
 336
 337         spin_lock_irq(&phba->hbalock);
 338         /*
 339          * If the Config port completed correctly the HBA is not
 340          * over heated any more.
 341          */
 342         if (phba->over_temp_state == HBA_OVER_TEMP)
 343                 phba->over_temp_state = HBA_NORMAL_TEMP;
 344         spin_unlock_irq(&phba->hbalock);
 345
 346         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 347         if (!pmb) {
 348                 phba->link_state = LPFC_HBA_ERROR;
 349                 return -ENOMEM;
 350         }
 351         mb = &pmb->u.mb;
 352
 353         /* Get login parameters for NID.  */
 354         rc = lpfc_read_sparam(phba, pmb, 0);
 355         if (rc) {
 356                 mempool_free(pmb, phba->mbox_mem_pool);
 357                 return -ENOMEM;
 358         }
 359
 360         pmb->vport = vport;
 361         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 362                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 363                                 "0448 Adapter failed init, mbxCmd x%x "
 364                                 "READ_SPARM mbxStatus x%x\n",
 365                                 mb->mbxCommand, mb->mbxStatus);
 366                 phba->link_state = LPFC_HBA_ERROR;
 367                 mp = (struct lpfc_dmabuf *) pmb->context1;
 368                 mempool_free(pmb, phba->mbox_mem_pool);
 369                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 370                 kfree(mp);
 371                 return -EIO;
 372         }
 373
 374         mp = (struct lpfc_dmabuf *) pmb->context1;
 375
 376         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 377         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 378         kfree(mp);
 379         pmb->context1 = NULL;
 380
 381         if (phba->cfg_soft_wwnn)
 382                 u64_to_wwn(phba->cfg_soft_wwnn,
 383                            vport->fc_sparam.nodeName.u.wwn);
 384         if (phba->cfg_soft_wwpn)
 385                 u64_to_wwn(phba->cfg_soft_wwpn,
 386                            vport->fc_sparam.portName.u.wwn);
 387         memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 388                sizeof (struct lpfc_name));
 389         memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 390                sizeof (struct lpfc_name));
 391
 392         /* Update the fc_host data structures with new wwn. */
 393         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 394         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 395         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 396
 397         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 398         /* This should be consolidated into parse_vpd ? - mr */
 399         if (phba->SerialNumber[0] == 0) {
 400                 uint8_t *outptr;
 401
 402                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 403                 for (i = 0; i < 12; i++) {
 404                         status = *outptr++;
 405                         j = ((status & 0xf0) >> 4);
 406                         if (j <= 9)
 407                                 phba->SerialNumber[i] =
 408                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 409                         else
 410                                 phba->SerialNumber[i] =
 411                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 412                         i++;
 413                         j = (status & 0xf);
 414                         if (j <= 9)
 415                                 phba->SerialNumber[i] =
 416                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 417                         else
 418                                 phba->SerialNumber[i] =
 419                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 420                 }
 421         }
 422
 423         lpfc_read_config(phba, pmb);
 424         pmb->vport = vport;
 425         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 426                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 427                                 "0453 Adapter failed to init, mbxCmd x%x "
 428                                 "READ_CONFIG, mbxStatus x%x\n",
 429                                 mb->mbxCommand, mb->mbxStatus);
 430                 phba->link_state = LPFC_HBA_ERROR;
 431                 mempool_free( pmb, phba->mbox_mem_pool);
 432                 return -EIO;
 433         }
 434
 435         /* Check if the port is disabled */
 436         lpfc_sli_read_link_ste(phba);
 437
 438         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 439         if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
 440                 phba->cfg_hba_queue_depth =
 441                         (mb->un.varRdConfig.max_xri + 1) -
 442                                         lpfc_sli4_get_els_iocb_cnt(phba);
 443
 444         phba->lmt = mb->un.varRdConfig.lmt;
 445
 446         /* Get the default values for Model Name and Description */
 447         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 448
 449         if ((phba->cfg_link_speed > LINK_SPEED_10G)
 450             || ((phba->cfg_link_speed == LINK_SPEED_1G)
 451                 && !(phba->lmt & LMT_1Gb))
 452             || ((phba->cfg_link_speed == LINK_SPEED_2G)
 453                 && !(phba->lmt & LMT_2Gb))
 454             || ((phba->cfg_link_speed == LINK_SPEED_4G)
 455                 && !(phba->lmt & LMT_4Gb))
 456             || ((phba->cfg_link_speed == LINK_SPEED_8G)
 457                 && !(phba->lmt & LMT_8Gb))
 458             || ((phba->cfg_link_speed == LINK_SPEED_10G)
 459                 && !(phba->lmt & LMT_10Gb))) {
 460                 /* Reset link speed to auto */
 461                 lpfc_printf_log(phba, KERN_WARNING, LOG_LINK_EVENT,
 462                         "1302 Invalid speed for this board: "
 463                         "Reset link speed to auto: x%x\n",
 464                         phba->cfg_link_speed);
 465                         phba->cfg_link_speed = LINK_SPEED_AUTO;
 466         }
 467
 468         phba->link_state = LPFC_LINK_DOWN;
 469
 470         /* Only process IOCBs on ELS ring till hba_state is READY */
 471         if (psli->ring[psli->extra_ring].cmdringaddr)
 472                 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
 473         if (psli->ring[psli->fcp_ring].cmdringaddr)
 474                 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
 475         if (psli->ring[psli->next_ring].cmdringaddr)
 476                 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
 477
 478         /* Post receive buffers for desired rings */
 479         if (phba->sli_rev != 3)
 480                 lpfc_post_rcv_buf(phba);
 481
 482         /*
 483          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 484          */
 485         if (phba->intr_type == MSIX) {
 486                 rc = lpfc_config_msi(phba, pmb);
 487                 if (rc) {
 488                         mempool_free(pmb, phba->mbox_mem_pool);
 489                         return -EIO;
 490                 }
 491                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 492                 if (rc != MBX_SUCCESS) {
 493                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 494                                         "0352 Config MSI mailbox command "
 495                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 496                                         pmb->u.mb.mbxCommand,
 497                                         pmb->u.mb.mbxStatus);
 498                         mempool_free(pmb, phba->mbox_mem_pool);
 499                         return -EIO;
 500                 }
 501         }
 502
 503         spin_lock_irq(&phba->hbalock);
 504         /* Initialize ERATT handling flag */
 505         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 506
 507         /* Enable appropriate host interrupts */
 508         status = readl(phba->HCregaddr);
 509         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 510         if (psli->num_rings > 0)
 511                 status |= HC_R0INT_ENA;
 512         if (psli->num_rings > 1)
 513                 status |= HC_R1INT_ENA;
 514         if (psli->num_rings > 2)
 515                 status |= HC_R2INT_ENA;
 516         if (psli->num_rings > 3)
 517                 status |= HC_R3INT_ENA;
 518
 519         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 520             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 521                 status &= ~(HC_R0INT_ENA);
 522
 523         writel(status, phba->HCregaddr);
 524         readl(phba->HCregaddr); /* flush */
 525         spin_unlock_irq(&phba->hbalock);
 526
 527         /* Set up ring-0 (ELS) timer */
 528         timeout = phba->fc_ratov * 2;
 529         mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
 530         /* Set up heart beat (HB) timer */
 531         mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
 532         phba->hb_outstanding = 0;
 533         phba->last_completion_time = jiffies;
 534         /* Set up error attention (ERATT) polling timer */
 535         mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
 536
 537         if (phba->hba_flag & LINK_DISABLED) {
 538                 lpfc_printf_log(phba,
 539                         KERN_ERR, LOG_INIT,
 540                         "2598 Adapter Link is disabled.\n");
 541                 lpfc_down_link(phba, pmb);
 542                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 543                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 544                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 545                         lpfc_printf_log(phba,
 546                         KERN_ERR, LOG_INIT,
 547                         "2599 Adapter failed to issue DOWN_LINK"
 548                         " mbox command rc 0x%x\n", rc);
 549
 550                         mempool_free(pmb, phba->mbox_mem_pool);
 551                         return -EIO;
 552                 }
 553         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 554                 lpfc_init_link(phba, pmb, phba->cfg_topology,
 555                         phba->cfg_link_speed);
 556                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 557                 lpfc_set_loopback_flag(phba);
 558                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 559                 if (rc != MBX_SUCCESS) {
 560                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 561                                 "0454 Adapter failed to init, mbxCmd x%x "
 562                                 "INIT_LINK, mbxStatus x%x\n",
 563                                 mb->mbxCommand, mb->mbxStatus);
 564
 565                         /* Clear all interrupt enable conditions */
 566                         writel(0, phba->HCregaddr);
 567                         readl(phba->HCregaddr); /* flush */
 568                         /* Clear all pending interrupts */
 569                         writel(0xffffffff, phba->HAregaddr);
 570                         readl(phba->HAregaddr); /* flush */
 571
 572                         phba->link_state = LPFC_HBA_ERROR;
 573                         if (rc != MBX_BUSY)
 574                                 mempool_free(pmb, phba->mbox_mem_pool);
 575                         return -EIO;
 576                 }
 577         }
 578         /* MBOX buffer will be freed in mbox compl */
 579         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 580         if (!pmb) {
 581                 phba->link_state = LPFC_HBA_ERROR;
 582                 return -ENOMEM;
 583         }
 584
 585         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 586         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 587         pmb->vport = phba->pport;
 588         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 589
 590         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 591                 lpfc_printf_log(phba,
 592                                 KERN_ERR,
 593                                 LOG_INIT,
 594                                 "0456 Adapter failed to issue "
 595                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 596                                 rc);
 597                 mempool_free(pmb, phba->mbox_mem_pool);
 598         }
 599
 600         /* Get Option rom version */
 601         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 602         if (!pmb) {
 603                 phba->link_state = LPFC_HBA_ERROR;
 604                 return -ENOMEM;
 605         }
 606
 607         lpfc_dump_wakeup_param(phba, pmb);
 608         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 609         pmb->vport = phba->pport;
 610         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 611
 612         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 613                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
 614                                 "to get Option ROM version status x%x\n", rc);
 615                 mempool_free(pmb, phba->mbox_mem_pool);
 616         }
 617
 618         return 0;
 619 }
 620
 621 /**
 622  * lpfc_hba_init_link - Initialize the FC link
 623  * @phba: pointer to lpfc hba data structure.
 624  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 625  *
 626  * This routine will issue the INIT_LINK mailbox command call.
 627  * It is available to other drivers through the lpfc_hba data
 628  * structure for use as a delayed link up mechanism with the
 629  * module parameter lpfc_suppress_link_up.
 630  *
 631  * Return code
 632  *              0 - success
 633  *              Any other value - error
 634  **/
 635 int
 636 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 637 {
 638         struct lpfc_vport *vport = phba->pport;
 639         LPFC_MBOXQ_t *pmb;
 640         MAILBOX_t *mb;
 641         int rc;
 642
 643         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 644         if (!pmb) {
 645                 phba->link_state = LPFC_HBA_ERROR;
 646                 return -ENOMEM;
 647         }
 648         mb = &pmb->u.mb;
 649         pmb->vport = vport;
 650
 651         lpfc_init_link(phba, pmb, phba->cfg_topology,
 652                 phba->cfg_link_speed);
 653         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 654         lpfc_set_loopback_flag(phba);
 655         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 656         if (rc != MBX_SUCCESS) {
 657                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 658                         "0498 Adapter failed to init, mbxCmd x%x "
 659                         "INIT_LINK, mbxStatus x%x\n",
 660                         mb->mbxCommand, mb->mbxStatus);
 661                 /* Clear all interrupt enable conditions */
 662                 writel(0, phba->HCregaddr);
 663                 readl(phba->HCregaddr); /* flush */
 664                 /* Clear all pending interrupts */
 665                 writel(0xffffffff, phba->HAregaddr);
 666                 readl(phba->HAregaddr); /* flush */
 667                 phba->link_state = LPFC_HBA_ERROR;
 668                 if (rc != MBX_BUSY || flag == MBX_POLL)
 669                         mempool_free(pmb, phba->mbox_mem_pool);
 670                 return -EIO;
 671         }
 672         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 673         if (flag == MBX_POLL)
 674                 mempool_free(pmb, phba->mbox_mem_pool);
 675
 676         return 0;
 677 }
 678
 679 /**
 680  * lpfc_hba_down_link - this routine downs the FC link
 681  * @phba: pointer to lpfc hba data structure.
 682  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 683  *
 684  * This routine will issue the DOWN_LINK mailbox command call.
 685  * It is available to other drivers through the lpfc_hba data
 686  * structure for use to stop the link.
 687  *
 688  * Return code
 689  *              0 - success
 690  *              Any other value - error
 691  **/
 692 int
 693 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 694 {
 695         LPFC_MBOXQ_t *pmb;
 696         int rc;
 697
 698         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 699         if (!pmb) {
 700                 phba->link_state = LPFC_HBA_ERROR;
 701                 return -ENOMEM;
 702         }
 703
 704         lpfc_printf_log(phba,
 705                 KERN_ERR, LOG_INIT,
 706                 "0491 Adapter Link is disabled.\n");
 707         lpfc_down_link(phba, pmb);
 708         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 709         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 710         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 711                 lpfc_printf_log(phba,
 712                 KERN_ERR, LOG_INIT,
 713                 "2522 Adapter failed to issue DOWN_LINK"
 714                 " mbox command rc 0x%x\n", rc);
 715
 716                 mempool_free(pmb, phba->mbox_mem_pool);
 717                 return -EIO;
 718         }
 719         if (flag == MBX_POLL)
 720                 mempool_free(pmb, phba->mbox_mem_pool);
 721
 722         return 0;
 723 }
 724
 725 /**
 726  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 727  * @phba: pointer to lpfc HBA data structure.
 728  *
 729  * This routine will do LPFC uninitialization before the HBA is reset when
 730  * bringing down the SLI Layer.
 731  *
 732  * Return codes
 733  *   0 - success.
 734  *   Any other value - error.
 735  **/
 736 int
 737 lpfc_hba_down_prep(struct lpfc_hba *phba)
 738 {
 739         struct lpfc_vport **vports;
 740         int i;
 741
 742         if (phba->sli_rev <= LPFC_SLI_REV3) {
 743                 /* Disable interrupts */
 744                 writel(0, phba->HCregaddr);
 745                 readl(phba->HCregaddr); /* flush */
 746         }
 747
 748         if (phba->pport->load_flag & FC_UNLOADING)
 749                 lpfc_cleanup_discovery_resources(phba->pport);
 750         else {
 751                 vports = lpfc_create_vport_work_array(phba);
 752                 if (vports != NULL)
 753                         for (i = 0; i <= phba->max_vports &&
 754                                 vports[i] != NULL; i++)
 755                                 lpfc_cleanup_discovery_resources(vports[i]);
 756                 lpfc_destroy_vport_work_array(phba, vports);
 757         }
 758         return 0;
 759 }
 760
 761 /**
 762  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 763  * @phba: pointer to lpfc HBA data structure.
 764  *
 765  * This routine will do uninitialization after the HBA is reset when bring
 766  * down the SLI Layer.
 767  *
 768  * Return codes
 769  *   0 - success.
 770  *   Any other value - error.
 771  **/
 772 static int
 773 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
 774 {
 775         struct lpfc_sli *psli = &phba->sli;
 776         struct lpfc_sli_ring *pring;
 777         struct lpfc_dmabuf *mp, *next_mp;
 778         LIST_HEAD(completions);
 779         int i;
 780
 781         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 782                 lpfc_sli_hbqbuf_free_all(phba);
 783         else {
 784                 /* Cleanup preposted buffers on the ELS ring */
 785                 pring = &psli->ring[LPFC_ELS_RING];
 786                 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
 787                         list_del(&mp->list);
 788                         pring->postbufq_cnt--;
 789                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 790                         kfree(mp);
 791                 }
 792         }
 793
 794         spin_lock_irq(&phba->hbalock);
 795         for (i = 0; i < psli->num_rings; i++) {
 796                 pring = &psli->ring[i];
 797
 798                 /* At this point in time the HBA is either reset or DOA. Either
 799                  * way, nothing should be on txcmplq as it will NEVER complete.
 800                  */
 801                 list_splice_init(&pring->txcmplq, &completions);
 802                 pring->txcmplq_cnt = 0;
 803                 spin_unlock_irq(&phba->hbalock);
 804
 805                 /* Cancel all the IOCBs from the completions list */
 806                 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 807                                       IOERR_SLI_ABORTED);
 808
 809                 lpfc_sli_abort_iocb_ring(phba, pring);
 810                 spin_lock_irq(&phba->hbalock);
 811         }
 812         spin_unlock_irq(&phba->hbalock);
 813
 814         return 0;
 815 }
 816 /**
 817  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
 818  * @phba: pointer to lpfc HBA data structure.
 819  *
 820  * This routine will do uninitialization after the HBA is reset when bring
 821  * down the SLI Layer.
 822  *
 823  * Return codes
 824  *   0 - success.
 825  *   Any other value - error.
 826  **/
 827 static int
 828 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 829 {
 830         struct lpfc_scsi_buf *psb, *psb_next;
 831         LIST_HEAD(aborts);
 832         int ret;
 833         unsigned long iflag = 0;
 834         struct lpfc_sglq *sglq_entry = NULL;
 835
 836         ret = lpfc_hba_down_post_s3(phba);
 837         if (ret)
 838                 return ret;
 839         /* At this point in time the HBA is either reset or DOA. Either
 840          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
 841          * on the lpfc_sgl_list so that it can either be freed if the
 842          * driver is unloading or reposted if the driver is restarting
 843          * the port.
 844          */
 845         spin_lock_irq(&phba->hbalock);  /* required for lpfc_sgl_list and */
 846                                         /* scsl_buf_list */
 847         /* abts_sgl_list_lock required because worker thread uses this
 848          * list.
 849          */
 850         spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
 851         list_for_each_entry(sglq_entry,
 852                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
 853                 sglq_entry->state = SGL_FREED;
 854
 855         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
 856                         &phba->sli4_hba.lpfc_sgl_list);
 857         spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
 858         /* abts_scsi_buf_list_lock required because worker thread uses this
 859          * list.
 860          */
 861         spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 862         list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
 863                         &aborts);
 864         spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 865         spin_unlock_irq(&phba->hbalock);
 866
 867         list_for_each_entry_safe(psb, psb_next, &aborts, list) {
 868                 psb->pCmd = NULL;
 869                 psb->status = IOSTAT_SUCCESS;
 870         }
 871         spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
 872         list_splice(&aborts, &phba->lpfc_scsi_buf_list);
 873         spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
 874         return 0;
 875 }
 876
 877 /**
 878  * lpfc_hba_down_post - Wrapper func for hba down post routine
 879  * @phba: pointer to lpfc HBA data structure.
 880  *
 881  * This routine wraps the actual SLI3 or SLI4 routine for performing
 882  * uninitialization after the HBA is reset when bring down the SLI Layer.
 883  *
 884  * Return codes
 885  *   0 - success.
 886  *   Any other value - error.
 887  **/
 888 int
 889 lpfc_hba_down_post(struct lpfc_hba *phba)
 890 {
 891         return (*phba->lpfc_hba_down_post)(phba);
 892 }
 893
 894 /**
 895  * lpfc_hb_timeout - The HBA-timer timeout handler
 896  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 897  *
 898  * This is the HBA-timer timeout handler registered to the lpfc driver. When
 899  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
 900  * work-port-events bitmap and the worker thread is notified. This timeout
 901  * event will be used by the worker thread to invoke the actual timeout
 902  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
 903  * be performed in the timeout handler and the HBA timeout event bit shall
 904  * be cleared by the worker thread after it has taken the event bitmap out.
 905  **/
 906 static void
 907 lpfc_hb_timeout(unsigned long ptr)
 908 {
 909         struct lpfc_hba *phba;
 910         uint32_t tmo_posted;
 911         unsigned long iflag;
 912
 913         phba = (struct lpfc_hba *)ptr;
 914
 915         /* Check for heart beat timeout conditions */
 916         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 917         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
 918         if (!tmo_posted)
 919                 phba->pport->work_port_events |= WORKER_HB_TMO;
 920         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 921
 922         /* Tell the worker thread there is work to do */
 923         if (!tmo_posted)
 924                 lpfc_worker_wake_up(phba);
 925         return;
 926 }
 927
 928 /**
 929  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
 930  * @phba: pointer to lpfc hba data structure.
 931  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 932  *
 933  * This is the callback function to the lpfc heart-beat mailbox command.
 934  * If configured, the lpfc driver issues the heart-beat mailbox command to
 935  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
 936  * heart-beat mailbox command is issued, the driver shall set up heart-beat
 937  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
 938  * heart-beat outstanding state. Once the mailbox command comes back and
 939  * no error conditions detected, the heart-beat mailbox command timer is
 940  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
 941  * state is cleared for the next heart-beat. If the timer expired with the
 942  * heart-beat outstanding state set, the driver will put the HBA offline.
 943  **/
 944 static void
 945 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 946 {
 947         unsigned long drvr_flag;
 948
 949         spin_lock_irqsave(&phba->hbalock, drvr_flag);
 950         phba->hb_outstanding = 0;
 951         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
 952
 953         /* Check and reset heart-beat timer is necessary */
 954         mempool_free(pmboxq, phba->mbox_mem_pool);
 955         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
 956                 !(phba->link_state == LPFC_HBA_ERROR) &&
 957                 !(phba->pport->load_flag & FC_UNLOADING))
 958                 mod_timer(&phba->hb_tmofunc,
 959                         jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
 960         return;
 961 }
 962
 963 /**
 964  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
 965  * @phba: pointer to lpfc hba data structure.
 966  *
 967  * This is the actual HBA-timer timeout handler to be invoked by the worker
 968  * thread whenever the HBA timer fired and HBA-timeout event posted. This
 969  * handler performs any periodic operations needed for the device. If such
 970  * periodic event has already been attended to either in the interrupt handler
 971  * or by processing slow-ring or fast-ring events within the HBA-timer
 972  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
 973  * the timer for the next timeout period. If lpfc heart-beat mailbox command
 974  * is configured and there is no heart-beat mailbox command outstanding, a
 975  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
 976  * has been a heart-beat mailbox command outstanding, the HBA shall be put
 977  * to offline.
 978  **/
 979 void
 980 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
 981 {
 982         struct lpfc_vport **vports;
 983         LPFC_MBOXQ_t *pmboxq;
 984         struct lpfc_dmabuf *buf_ptr;
 985         int retval, i;
 986         struct lpfc_sli *psli = &phba->sli;
 987         LIST_HEAD(completions);
 988
 989         vports = lpfc_create_vport_work_array(phba);
 990         if (vports != NULL)
 991                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
 992                         lpfc_rcv_seq_check_edtov(vports[i]);
 993         lpfc_destroy_vport_work_array(phba, vports);
 994
 995         if ((phba->link_state == LPFC_HBA_ERROR) ||
 996                 (phba->pport->load_flag & FC_UNLOADING) ||
 997                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
 998                 return;
 999
1000         spin_lock_irq(&phba->pport->work_port_lock);
1001
1002         if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
1003                 jiffies)) {
1004                 spin_unlock_irq(&phba->pport->work_port_lock);
1005                 if (!phba->hb_outstanding)
1006                         mod_timer(&phba->hb_tmofunc,
1007                                 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1008                 else
1009                         mod_timer(&phba->hb_tmofunc,
1010                                 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1011                 return;
1012         }
1013         spin_unlock_irq(&phba->pport->work_port_lock);
1014
1015         if (phba->elsbuf_cnt &&
1016                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1017                 spin_lock_irq(&phba->hbalock);
1018                 list_splice_init(&phba->elsbuf, &completions);
1019                 phba->elsbuf_cnt = 0;
1020                 phba->elsbuf_prev_cnt = 0;
1021                 spin_unlock_irq(&phba->hbalock);
1022
1023                 while (!list_empty(&completions)) {
1024                         list_remove_head(&completions, buf_ptr,
1025                                 struct lpfc_dmabuf, list);
1026                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1027                         kfree(buf_ptr);
1028                 }
1029         }
1030         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1031
1032         /* If there is no heart beat outstanding, issue a heartbeat command */
1033         if (phba->cfg_enable_hba_heartbeat) {
1034                 if (!phba->hb_outstanding) {
1035                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1036                                 (list_empty(&psli->mboxq))) {
1037                                 pmboxq = mempool_alloc(phba->mbox_mem_pool,
1038                                                         GFP_KERNEL);
1039                                 if (!pmboxq) {
1040                                         mod_timer(&phba->hb_tmofunc,
1041                                                  jiffies +
1042                                                  HZ * LPFC_HB_MBOX_INTERVAL);
1043                                         return;
1044                                 }
1045
1046                                 lpfc_heart_beat(phba, pmboxq);
1047                                 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1048                                 pmboxq->vport = phba->pport;
1049                                 retval = lpfc_sli_issue_mbox(phba, pmboxq,
1050                                                 MBX_NOWAIT);
1051
1052                                 if (retval != MBX_BUSY &&
1053                                         retval != MBX_SUCCESS) {
1054                                         mempool_free(pmboxq,
1055                                                         phba->mbox_mem_pool);
1056                                         mod_timer(&phba->hb_tmofunc,
1057                                                 jiffies +
1058                                                 HZ * LPFC_HB_MBOX_INTERVAL);
1059                                         return;
1060                                 }
1061                                 phba->skipped_hb = 0;
1062                                 phba->hb_outstanding = 1;
1063                         } else if (time_before_eq(phba->last_completion_time,
1064                                         phba->skipped_hb)) {
1065                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1066                                         "2857 Last completion time not "
1067                                         " updated in %d ms\n",
1068                                         jiffies_to_msecs(jiffies
1069                                                  - phba->last_completion_time));
1070                         } else
1071                                 phba->skipped_hb = jiffies;
1072
1073                         mod_timer(&phba->hb_tmofunc,
1074                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1075                         return;
1076                 } else {
1077                         /*
1078                         * If heart beat timeout called with hb_outstanding set
1079                         * we need to take the HBA offline.
1080                         */
1081                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1082                                         "0459 Adapter heartbeat failure, "
1083                                         "taking this port offline.\n");
1084
1085                         spin_lock_irq(&phba->hbalock);
1086                         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1087                         spin_unlock_irq(&phba->hbalock);
1088
1089                         lpfc_offline_prep(phba);
1090                         lpfc_offline(phba);
1091                         lpfc_unblock_mgmt_io(phba);
1092                         phba->link_state = LPFC_HBA_ERROR;
1093                         lpfc_hba_down_post(phba);
1094                 }
1095         }
1096 }
1097
1098 /**
1099  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1100  * @phba: pointer to lpfc hba data structure.
1101  *
1102  * This routine is called to bring the HBA offline when HBA hardware error
1103  * other than Port Error 6 has been detected.
1104  **/
1105 static void
1106 lpfc_offline_eratt(struct lpfc_hba *phba)
1107 {
1108         struct lpfc_sli   *psli = &phba->sli;
1109
1110         spin_lock_irq(&phba->hbalock);
1111         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1112         spin_unlock_irq(&phba->hbalock);
1113         lpfc_offline_prep(phba);
1114
1115         lpfc_offline(phba);
1116         lpfc_reset_barrier(phba);
1117         spin_lock_irq(&phba->hbalock);
1118         lpfc_sli_brdreset(phba);
1119         spin_unlock_irq(&phba->hbalock);
1120         lpfc_hba_down_post(phba);
1121         lpfc_sli_brdready(phba, HS_MBRDY);
1122         lpfc_unblock_mgmt_io(phba);
1123         phba->link_state = LPFC_HBA_ERROR;
1124         return;
1125 }
1126
1127 /**
1128  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1129  * @phba: pointer to lpfc hba data structure.
1130  *
1131  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1132  * other than Port Error 6 has been detected.
1133  **/
1134 static void
1135 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1136 {
1137         lpfc_offline_prep(phba);
1138         lpfc_offline(phba);
1139         lpfc_sli4_brdreset(phba);
1140         lpfc_hba_down_post(phba);
1141         lpfc_sli4_post_status_check(phba);
1142         lpfc_unblock_mgmt_io(phba);
1143         phba->link_state = LPFC_HBA_ERROR;
1144 }
1145
1146 /**
1147  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1148  * @phba: pointer to lpfc hba data structure.
1149  *
1150  * This routine is invoked to handle the deferred HBA hardware error
1151  * conditions. This type of error is indicated by HBA by setting ER1
1152  * and another ER bit in the host status register. The driver will
1153  * wait until the ER1 bit clears before handling the error condition.
1154  **/
1155 static void
1156 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1157 {
1158         uint32_t old_host_status = phba->work_hs;
1159         struct lpfc_sli_ring  *pring;
1160         struct lpfc_sli *psli = &phba->sli;
1161
1162         /* If the pci channel is offline, ignore possible errors,
1163          * since we cannot communicate with the pci card anyway.
1164          */
1165         if (pci_channel_offline(phba->pcidev)) {
1166                 spin_lock_irq(&phba->hbalock);
1167                 phba->hba_flag &= ~DEFER_ERATT;
1168                 spin_unlock_irq(&phba->hbalock);
1169                 return;
1170         }
1171
1172         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1173                 "0479 Deferred Adapter Hardware Error "
1174                 "Data: x%x x%x x%x\n",
1175                 phba->work_hs,
1176                 phba->work_status[0], phba->work_status[1]);
1177
1178         spin_lock_irq(&phba->hbalock);
1179         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1180         spin_unlock_irq(&phba->hbalock);
1181
1182
1183         /*
1184          * Firmware stops when it triggred erratt. That could cause the I/Os
1185          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1186          * SCSI layer retry it after re-establishing link.
1187          */
1188         pring = &psli->ring[psli->fcp_ring];
1189         lpfc_sli_abort_iocb_ring(phba, pring);
1190
1191         /*
1192          * There was a firmware error. Take the hba offline and then
1193          * attempt to restart it.
1194          */
1195         lpfc_offline_prep(phba);
1196         lpfc_offline(phba);
1197
1198         /* Wait for the ER1 bit to clear.*/
1199         while (phba->work_hs & HS_FFER1) {
1200                 msleep(100);
1201                 phba->work_hs = readl(phba->HSregaddr);
1202                 /* If driver is unloading let the worker thread continue */
1203                 if (phba->pport->load_flag & FC_UNLOADING) {
1204                         phba->work_hs = 0;
1205                         break;
1206                 }
1207         }
1208
1209         /*
1210          * This is to ptrotect against a race condition in which
1211          * first write to the host attention register clear the
1212          * host status register.
1213          */
1214         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1215                 phba->work_hs = old_host_status & ~HS_FFER1;
1216
1217         spin_lock_irq(&phba->hbalock);
1218         phba->hba_flag &= ~DEFER_ERATT;
1219         spin_unlock_irq(&phba->hbalock);
1220         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1221         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1222 }
1223
1224 static void
1225 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1226 {
1227         struct lpfc_board_event_header board_event;
1228         struct Scsi_Host *shost;
1229
1230         board_event.event_type = FC_REG_BOARD_EVENT;
1231         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1232         shost = lpfc_shost_from_vport(phba->pport);
1233         fc_host_post_vendor_event(shost, fc_get_event_number(),
1234                                   sizeof(board_event),
1235                                   (char *) &board_event,
1236                                   LPFC_NL_VENDOR_ID);
1237 }
1238
1239 /**
1240  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1241  * @phba: pointer to lpfc hba data structure.
1242  *
1243  * This routine is invoked to handle the following HBA hardware error
1244  * conditions:
1245  * 1 - HBA error attention interrupt
1246  * 2 - DMA ring index out of range
1247  * 3 - Mailbox command came back as unknown
1248  **/
1249 static void
1250 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1251 {
1252         struct lpfc_vport *vport = phba->pport;
1253         struct lpfc_sli   *psli = &phba->sli;
1254         struct lpfc_sli_ring  *pring;
1255         uint32_t event_data;
1256         unsigned long temperature;
1257         struct temp_event temp_event_data;
1258         struct Scsi_Host  *shost;
1259
1260         /* If the pci channel is offline, ignore possible errors,
1261          * since we cannot communicate with the pci card anyway.
1262          */
1263         if (pci_channel_offline(phba->pcidev)) {
1264                 spin_lock_irq(&phba->hbalock);
1265                 phba->hba_flag &= ~DEFER_ERATT;
1266                 spin_unlock_irq(&phba->hbalock);
1267                 return;
1268         }
1269
1270         /* If resets are disabled then leave the HBA alone and return */
1271         if (!phba->cfg_enable_hba_reset)
1272                 return;
1273
1274         /* Send an internal error event to mgmt application */
1275         lpfc_board_errevt_to_mgmt(phba);
1276
1277         if (phba->hba_flag & DEFER_ERATT)
1278                 lpfc_handle_deferred_eratt(phba);
1279
1280         if (phba->work_hs & HS_FFER6) {
1281                 /* Re-establishing Link */
1282                 lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1283                                 "1301 Re-establishing Link "
1284                                 "Data: x%x x%x x%x\n",
1285                                 phba->work_hs,
1286                                 phba->work_status[0], phba->work_status[1]);
1287
1288                 spin_lock_irq(&phba->hbalock);
1289                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1290                 spin_unlock_irq(&phba->hbalock);
1291
1292                 /*
1293                 * Firmware stops when it triggled erratt with HS_FFER6.
1294                 * That could cause the I/Os dropped by the firmware.
1295                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1296                 * retry it after re-establishing link.
1297                 */
1298                 pring = &psli->ring[psli->fcp_ring];
1299                 lpfc_sli_abort_iocb_ring(phba, pring);
1300
1301                 /*
1302                  * There was a firmware error.  Take the hba offline and then
1303                  * attempt to restart it.
1304                  */
1305                 lpfc_offline_prep(phba);
1306                 lpfc_offline(phba);
1307                 lpfc_sli_brdrestart(phba);
1308                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1309                         lpfc_unblock_mgmt_io(phba);
1310                         return;
1311                 }
1312                 lpfc_unblock_mgmt_io(phba);
1313         } else if (phba->work_hs & HS_CRIT_TEMP) {
1314                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1315                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1316                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1317                 temp_event_data.data = (uint32_t)temperature;
1318
1319                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1320                                 "0406 Adapter maximum temperature exceeded "
1321                                 "(%ld), taking this port offline "
1322                                 "Data: x%x x%x x%x\n",
1323                                 temperature, phba->work_hs,
1324                                 phba->work_status[0], phba->work_status[1]);
1325
1326                 shost = lpfc_shost_from_vport(phba->pport);
1327                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1328                                           sizeof(temp_event_data),
1329                                           (char *) &temp_event_data,
1330                                           SCSI_NL_VID_TYPE_PCI
1331                                           | PCI_VENDOR_ID_EMULEX);
1332
1333                 spin_lock_irq(&phba->hbalock);
1334                 phba->over_temp_state = HBA_OVER_TEMP;
1335                 spin_unlock_irq(&phba->hbalock);
1336                 lpfc_offline_eratt(phba);
1337
1338         } else {
1339                 /* The if clause above forces this code path when the status
1340                  * failure is a value other than FFER6. Do not call the offline
1341                  * twice. This is the adapter hardware error path.
1342                  */
1343                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1344                                 "0457 Adapter Hardware Error "
1345                                 "Data: x%x x%x x%x\n",
1346                                 phba->work_hs,
1347                                 phba->work_status[0], phba->work_status[1]);
1348
1349                 event_data = FC_REG_DUMP_EVENT;
1350                 shost = lpfc_shost_from_vport(vport);
1351                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1352                                 sizeof(event_data), (char *) &event_data,
1353                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1354
1355                 lpfc_offline_eratt(phba);
1356         }
1357         return;
1358 }
1359
1360 /**
1361  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1362  * @phba: pointer to lpfc hba data structure.
1363  *
1364  * This routine is invoked to handle the SLI4 HBA hardware error attention
1365  * conditions.
1366  **/
1367 static void
1368 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1369 {
1370         struct lpfc_vport *vport = phba->pport;
1371         uint32_t event_data;
1372         struct Scsi_Host *shost;
1373
1374         /* If the pci channel is offline, ignore possible errors, since
1375          * we cannot communicate with the pci card anyway.
1376          */
1377         if (pci_channel_offline(phba->pcidev))
1378                 return;
1379         /* If resets are disabled then leave the HBA alone and return */
1380         if (!phba->cfg_enable_hba_reset)
1381                 return;
1382
1383         /* Send an internal error event to mgmt application */
1384         lpfc_board_errevt_to_mgmt(phba);
1385
1386         /* For now, the actual action for SLI4 device handling is not
1387          * specified yet, just treated it as adaptor hardware failure
1388          */
1389         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1390                         "0143 SLI4 Adapter Hardware Error Data: x%x x%x\n",
1391                         phba->work_status[0], phba->work_status[1]);
1392
1393         event_data = FC_REG_DUMP_EVENT;
1394         shost = lpfc_shost_from_vport(vport);
1395         fc_host_post_vendor_event(shost, fc_get_event_number(),
1396                                   sizeof(event_data), (char *) &event_data,
1397                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1398
1399         lpfc_sli4_offline_eratt(phba);
1400 }
1401
1402 /**
1403  * lpfc_handle_eratt - Wrapper func for handling hba error attention
1404  * @phba: pointer to lpfc HBA data structure.
1405  *
1406  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
1407  * routine from the API jump table function pointer from the lpfc_hba struct.
1408  *
1409  * Return codes
1410  *   0 - success.
1411  *   Any other value - error.
1412  **/
1413 void
1414 lpfc_handle_eratt(struct lpfc_hba *phba)
1415 {
1416         (*phba->lpfc_handle_eratt)(phba);
1417 }
1418
1419 /**
1420  * lpfc_handle_latt - The HBA link event handler
1421  * @phba: pointer to lpfc hba data structure.
1422  *
1423  * This routine is invoked from the worker thread to handle a HBA host
1424  * attention link event.
1425  **/
1426 void
1427 lpfc_handle_latt(struct lpfc_hba *phba)
1428 {
1429         struct lpfc_vport *vport = phba->pport;
1430         struct lpfc_sli   *psli = &phba->sli;
1431         LPFC_MBOXQ_t *pmb;
1432         volatile uint32_t control;
1433         struct lpfc_dmabuf *mp;
1434         int rc = 0;
1435
1436         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1437         if (!pmb) {
1438                 rc = 1;
1439                 goto lpfc_handle_latt_err_exit;
1440         }
1441
1442         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1443         if (!mp) {
1444                 rc = 2;
1445                 goto lpfc_handle_latt_free_pmb;
1446         }
1447
1448         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
1449         if (!mp->virt) {
1450                 rc = 3;
1451                 goto lpfc_handle_latt_free_mp;
1452         }
1453
1454         /* Cleanup any outstanding ELS commands */
1455         lpfc_els_flush_all_cmd(phba);
1456
1457         psli->slistat.link_event++;
1458         lpfc_read_la(phba, pmb, mp);
1459         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_la;
1460         pmb->vport = vport;
1461         /* Block ELS IOCBs until we have processed this mbox command */
1462         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
1463         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
1464         if (rc == MBX_NOT_FINISHED) {
1465                 rc = 4;
1466                 goto lpfc_handle_latt_free_mbuf;
1467         }
1468
1469         /* Clear Link Attention in HA REG */
1470         spin_lock_irq(&phba->hbalock);
1471         writel(HA_LATT, phba->HAregaddr);
1472         readl(phba->HAregaddr); /* flush */
1473         spin_unlock_irq(&phba->hbalock);
1474
1475         return;
1476
1477 lpfc_handle_latt_free_mbuf:
1478         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1479         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1480 lpfc_handle_latt_free_mp:
1481         kfree(mp);
1482 lpfc_handle_latt_free_pmb:
1483         mempool_free(pmb, phba->mbox_mem_pool);
1484 lpfc_handle_latt_err_exit:
1485         /* Enable Link attention interrupts */
1486         spin_lock_irq(&phba->hbalock);
1487         psli->sli_flag |= LPFC_PROCESS_LA;
1488         control = readl(phba->HCregaddr);
1489         control |= HC_LAINT_ENA;
1490         writel(control, phba->HCregaddr);
1491         readl(phba->HCregaddr); /* flush */
1492
1493         /* Clear Link Attention in HA REG */
1494         writel(HA_LATT, phba->HAregaddr);
1495         readl(phba->HAregaddr); /* flush */
1496         spin_unlock_irq(&phba->hbalock);
1497         lpfc_linkdown(phba);
1498         phba->link_state = LPFC_HBA_ERROR;
1499
1500         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1501                      "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1502
1503         return;
1504 }
1505
1506 /**
1507  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
1508  * @phba: pointer to lpfc hba data structure.
1509  * @vpd: pointer to the vital product data.
1510  * @len: length of the vital product data in bytes.
1511  *
1512  * This routine parses the Vital Product Data (VPD). The VPD is treated as
1513  * an array of characters. In this routine, the ModelName, ProgramType, and
1514  * ModelDesc, etc. fields of the phba data structure will be populated.
1515  *
1516  * Return codes
1517  *   0 - pointer to the VPD passed in is NULL
1518  *   1 - success
1519  **/
1520 int
1521 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1522 {
1523         uint8_t lenlo, lenhi;
1524         int Length;
1525         int i, j;
1526         int finished = 0;
1527         int index = 0;
1528
1529         if (!vpd)
1530                 return 0;
1531
1532         /* Vital Product */
1533         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1534                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
1535                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1536                         (uint32_t) vpd[3]);
1537         while (!finished && (index < (len - 4))) {
1538                 switch (vpd[index]) {
1539                 case 0x82:
1540                 case 0x91:
1541                         index += 1;
1542                         lenlo = vpd[index];
1543                         index += 1;
1544                         lenhi = vpd[index];
1545                         index += 1;
1546                         i = ((((unsigned short)lenhi) << 8) + lenlo);
1547                         index += i;
1548                         break;
1549                 case 0x90:
1550                         index += 1;
1551                         lenlo = vpd[index];
1552                         index += 1;
1553                         lenhi = vpd[index];
1554                         index += 1;
1555                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
1556                         if (Length > len - index)
1557                                 Length = len - index;
1558                         while (Length > 0) {
1559                         /* Look for Serial Number */
1560                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1561                                 index += 2;
1562                                 i = vpd[index];
1563                                 index += 1;
1564                                 j = 0;
1565                                 Length -= (3+i);
1566                                 while(i--) {
1567                                         phba->SerialNumber[j++] = vpd[index++];
1568                                         if (j == 31)
1569                                                 break;
1570                                 }
1571                                 phba->SerialNumber[j] = 0;
1572                                 continue;
1573                         }
1574                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1575                                 phba->vpd_flag |= VPD_MODEL_DESC;
1576                                 index += 2;
1577                                 i = vpd[index];
1578                                 index += 1;
1579                                 j = 0;
1580                                 Length -= (3+i);
1581                                 while(i--) {
1582                                         phba->ModelDesc[j++] = vpd[index++];
1583                                         if (j == 255)
1584                                                 break;
1585                                 }
1586                                 phba->ModelDesc[j] = 0;
1587                                 continue;
1588                         }
1589                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1590                                 phba->vpd_flag |= VPD_MODEL_NAME;
1591                                 index += 2;
1592                                 i = vpd[index];
1593                                 index += 1;
1594                                 j = 0;
1595                                 Length -= (3+i);
1596                                 while(i--) {
1597                                         phba->ModelName[j++] = vpd[index++];
1598                                         if (j == 79)
1599                                                 break;
1600                                 }
1601                                 phba->ModelName[j] = 0;
1602                                 continue;
1603                         }
1604                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
1605                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
1606                                 index += 2;
1607                                 i = vpd[index];
1608                                 index += 1;
1609                                 j = 0;
1610                                 Length -= (3+i);
1611                                 while(i--) {
1612                                         phba->ProgramType[j++] = vpd[index++];
1613                                         if (j == 255)
1614                                                 break;
1615                                 }
1616                                 phba->ProgramType[j] = 0;
1617                                 continue;
1618                         }
1619                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
1620                                 phba->vpd_flag |= VPD_PORT;
1621                                 index += 2;
1622                                 i = vpd[index];
1623                                 index += 1;
1624                                 j = 0;
1625                                 Length -= (3+i);
1626                                 while(i--) {
1627                                 phba->Port[j++] = vpd[index++];
1628                                 if (j == 19)
1629                                         break;
1630                                 }
1631                                 phba->Port[j] = 0;
1632                                 continue;
1633                         }
1634                         else {
1635                                 index += 2;
1636                                 i = vpd[index];
1637                                 index += 1;
1638                                 index += i;
1639                                 Length -= (3 + i);
1640                         }
1641                 }
1642                 finished = 0;
1643                 break;
1644                 case 0x78:
1645                         finished = 1;
1646                         break;
1647                 default:
1648                         index ++;
1649                         break;
1650                 }
1651         }
1652
1653         return(1);
1654 }
1655
1656 /**
1657  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
1658  * @phba: pointer to lpfc hba data structure.
1659  * @mdp: pointer to the data structure to hold the derived model name.
1660  * @descp: pointer to the data structure to hold the derived description.
1661  *
1662  * This routine retrieves HBA's description based on its registered PCI device
1663  * ID. The @descp passed into this function points to an array of 256 chars. It
1664  * shall be returned with the model name, maximum speed, and the host bus type.
1665  * The @mdp passed into this function points to an array of 80 chars. When the
1666  * function returns, the @mdp will be filled with the model name.
1667  **/
1668 static void
1669 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
1670 {
1671         lpfc_vpd_t *vp;
1672         uint16_t dev_id = phba->pcidev->device;
1673         int max_speed;
1674         int GE = 0;
1675         int oneConnect = 0; /* default is not a oneConnect */
1676         struct {
1677                 char *name;
1678                 char *bus;
1679                 char *function;
1680         } m = {"<Unknown>", "", ""};
1681
1682         if (mdp && mdp[0] != '\0'
1683                 && descp && descp[0] != '\0')
1684                 return;
1685
1686         if (phba->lmt & LMT_10Gb)
1687                 max_speed = 10;
1688         else if (phba->lmt & LMT_8Gb)
1689                 max_speed = 8;
1690         else if (phba->lmt & LMT_4Gb)
1691                 max_speed = 4;
1692         else if (phba->lmt & LMT_2Gb)
1693                 max_speed = 2;
1694         else
1695                 max_speed = 1;
1696
1697         vp = &phba->vpd;
1698
1699         switch (dev_id) {
1700         case PCI_DEVICE_ID_FIREFLY:
1701                 m = (typeof(m)){"LP6000", "PCI", "Fibre Channel Adapter"};
1702                 break;
1703         case PCI_DEVICE_ID_SUPERFLY:
1704                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
1705                         m = (typeof(m)){"LP7000", "PCI",
1706                                         "Fibre Channel Adapter"};
1707                 else
1708                         m = (typeof(m)){"LP7000E", "PCI",
1709                                         "Fibre Channel Adapter"};
1710                 break;
1711         case PCI_DEVICE_ID_DRAGONFLY:
1712                 m = (typeof(m)){"LP8000", "PCI",
1713                                 "Fibre Channel Adapter"};
1714                 break;
1715         case PCI_DEVICE_ID_CENTAUR:
1716                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
1717                         m = (typeof(m)){"LP9002", "PCI",
1718                                         "Fibre Channel Adapter"};
1719                 else
1720                         m = (typeof(m)){"LP9000", "PCI",
1721                                         "Fibre Channel Adapter"};
1722                 break;
1723         case PCI_DEVICE_ID_RFLY:
1724                 m = (typeof(m)){"LP952", "PCI",
1725                                 "Fibre Channel Adapter"};
1726                 break;
1727         case PCI_DEVICE_ID_PEGASUS:
1728                 m = (typeof(m)){"LP9802", "PCI-X",
1729                                 "Fibre Channel Adapter"};
1730                 break;
1731         case PCI_DEVICE_ID_THOR:
1732                 m = (typeof(m)){"LP10000", "PCI-X",
1733                                 "Fibre Channel Adapter"};
1734                 break;
1735         case PCI_DEVICE_ID_VIPER:
1736                 m = (typeof(m)){"LPX1000",  "PCI-X",
1737                                 "Fibre Channel Adapter"};
1738                 break;
1739         case PCI_DEVICE_ID_PFLY:
1740                 m = (typeof(m)){"LP982", "PCI-X",
1741                                 "Fibre Channel Adapter"};
1742                 break;
1743         case PCI_DEVICE_ID_TFLY:
1744                 m = (typeof(m)){"LP1050", "PCI-X",
1745                                 "Fibre Channel Adapter"};
1746                 break;
1747         case PCI_DEVICE_ID_HELIOS:
1748                 m = (typeof(m)){"LP11000", "PCI-X2",
1749                                 "Fibre Channel Adapter"};
1750                 break;
1751         case PCI_DEVICE_ID_HELIOS_SCSP:
1752                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
1753                                 "Fibre Channel Adapter"};
1754                 break;
1755         case PCI_DEVICE_ID_HELIOS_DCSP:
1756                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
1757                                 "Fibre Channel Adapter"};
1758                 break;
1759         case PCI_DEVICE_ID_NEPTUNE:
1760                 m = (typeof(m)){"LPe1000", "PCIe", "Fibre Channel Adapter"};
1761                 break;
1762         case PCI_DEVICE_ID_NEPTUNE_SCSP:
1763                 m = (typeof(m)){"LPe1000-SP", "PCIe", "Fibre Channel Adapter"};
1764                 break;
1765         case PCI_DEVICE_ID_NEPTUNE_DCSP:
1766                 m = (typeof(m)){"LPe1002-SP", "PCIe", "Fibre Channel Adapter"};
1767                 break;
1768         case PCI_DEVICE_ID_BMID:
1769                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
1770                 break;
1771         case PCI_DEVICE_ID_BSMB:
1772                 m = (typeof(m)){"LP111", "PCI-X2", "Fibre Channel Adapter"};
1773                 break;
1774         case PCI_DEVICE_ID_ZEPHYR:
1775                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1776                 break;
1777         case PCI_DEVICE_ID_ZEPHYR_SCSP:
1778                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1779                 break;
1780         case PCI_DEVICE_ID_ZEPHYR_DCSP:
1781                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
1782                 GE = 1;
1783                 break;
1784         case PCI_DEVICE_ID_ZMID:
1785                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
1786                 break;
1787         case PCI_DEVICE_ID_ZSMB:
1788                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
1789                 break;
1790         case PCI_DEVICE_ID_LP101:
1791                 m = (typeof(m)){"LP101", "PCI-X", "Fibre Channel Adapter"};
1792                 break;
1793         case PCI_DEVICE_ID_LP10000S:
1794                 m = (typeof(m)){"LP10000-S", "PCI", "Fibre Channel Adapter"};
1795                 break;
1796         case PCI_DEVICE_ID_LP11000S:
1797                 m = (typeof(m)){"LP11000-S", "PCI-X2", "Fibre Channel Adapter"};
1798                 break;
1799         case PCI_DEVICE_ID_LPE11000S:
1800                 m = (typeof(m)){"LPe11000-S", "PCIe", "Fibre Channel Adapter"};
1801                 break;
1802         case PCI_DEVICE_ID_SAT:
1803                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
1804                 break;
1805         case PCI_DEVICE_ID_SAT_MID:
1806                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
1807                 break;
1808         case PCI_DEVICE_ID_SAT_SMB:
1809                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
1810                 break;
1811         case PCI_DEVICE_ID_SAT_DCSP:
1812                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
1813                 break;
1814         case PCI_DEVICE_ID_SAT_SCSP:
1815                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
1816                 break;
1817         case PCI_DEVICE_ID_SAT_S:
1818                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
1819                 break;
1820         case PCI_DEVICE_ID_HORNET:
1821                 m = (typeof(m)){"LP21000", "PCIe", "FCoE Adapter"};
1822                 GE = 1;
1823                 break;
1824         case PCI_DEVICE_ID_PROTEUS_VF:
1825                 m = (typeof(m)){"LPev12000", "PCIe IOV",
1826                                 "Fibre Channel Adapter"};
1827                 break;
1828         case PCI_DEVICE_ID_PROTEUS_PF:
1829                 m = (typeof(m)){"LPev12000", "PCIe IOV",
1830                                 "Fibre Channel Adapter"};
1831                 break;
1832         case PCI_DEVICE_ID_PROTEUS_S:
1833                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
1834                                 "Fibre Channel Adapter"};
1835                 break;
1836         case PCI_DEVICE_ID_TIGERSHARK:
1837                 oneConnect = 1;
1838                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
1839                 break;
1840         case PCI_DEVICE_ID_TOMCAT:
1841                 oneConnect = 1;
1842                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
1843                 break;
1844         case PCI_DEVICE_ID_FALCON:
1845                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
1846                                 "EmulexSecure Fibre"};
1847                 break;
1848         case PCI_DEVICE_ID_BALIUS:
1849                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
1850                                 "Fibre Channel Adapter"};
1851                 break;
1852         default:
1853                 m = (typeof(m)){"Unknown", "", ""};
1854                 break;
1855         }
1856
1857         if (mdp && mdp[0] == '\0')
1858                 snprintf(mdp, 79,"%s", m.name);
1859         /* oneConnect hba requires special processing, they are all initiators
1860          * and we put the port number on the end
1861          */
1862         if (descp && descp[0] == '\0') {
1863                 if (oneConnect)
1864                         snprintf(descp, 255,
1865                                 "Emulex OneConnect %s, %s Initiator, Port %s",
1866                                 m.name, m.function,
1867                                 phba->Port);
1868                 else
1869                         snprintf(descp, 255,
1870                                 "Emulex %s %d%s %s %s",
1871                                 m.name, max_speed, (GE) ? "GE" : "Gb",
1872                                 m.bus, m.function);
1873         }
1874 }
1875
1876 /**
1877  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
1878  * @phba: pointer to lpfc hba data structure.
1879  * @pring: pointer to a IOCB ring.
1880  * @cnt: the number of IOCBs to be posted to the IOCB ring.
1881  *
1882  * This routine posts a given number of IOCBs with the associated DMA buffer
1883  * descriptors specified by the cnt argument to the given IOCB ring.
1884  *
1885  * Return codes
1886  *   The number of IOCBs NOT able to be posted to the IOCB ring.
1887  **/
1888 int
1889 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
1890 {
1891         IOCB_t *icmd;
1892         struct lpfc_iocbq *iocb;
1893         struct lpfc_dmabuf *mp1, *mp2;
1894
1895         cnt += pring->missbufcnt;
1896
1897         /* While there are buffers to post */
1898         while (cnt > 0) {
1899                 /* Allocate buffer for  command iocb */
1900                 iocb = lpfc_sli_get_iocbq(phba);
1901                 if (iocb == NULL) {
1902                         pring->missbufcnt = cnt;
1903                         return cnt;
1904                 }
1905                 icmd = &iocb->iocb;
1906
1907                 /* 2 buffers can be posted per command */
1908                 /* Allocate buffer to post */
1909                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
1910                 if (mp1)
1911                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
1912                 if (!mp1 || !mp1->virt) {
1913                         kfree(mp1);
1914                         lpfc_sli_release_iocbq(phba, iocb);
1915                         pring->missbufcnt = cnt;
1916                         return cnt;
1917                 }
1918
1919                 INIT_LIST_HEAD(&mp1->list);
1920                 /* Allocate buffer to post */
1921                 if (cnt > 1) {
1922                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
1923                         if (mp2)
1924                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
1925                                                             &mp2->phys);
1926                         if (!mp2 || !mp2->virt) {
1927                                 kfree(mp2);
1928                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
1929                                 kfree(mp1);
1930                                 lpfc_sli_release_iocbq(phba, iocb);
1931                                 pring->missbufcnt = cnt;
1932                                 return cnt;
1933                         }
1934
1935                         INIT_LIST_HEAD(&mp2->list);
1936                 } else {
1937                         mp2 = NULL;
1938                 }
1939
1940                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
1941                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
1942                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
1943                 icmd->ulpBdeCount = 1;
1944                 cnt--;
1945                 if (mp2) {
1946                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
1947                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
1948                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
1949                         cnt--;
1950                         icmd->ulpBdeCount = 2;
1951                 }
1952
1953                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
1954                 icmd->ulpLe = 1;
1955
1956                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
1957                     IOCB_ERROR) {
1958                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
1959                         kfree(mp1);
1960                         cnt++;
1961                         if (mp2) {
1962                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
1963                                 kfree(mp2);
1964                                 cnt++;
1965                         }
1966                         lpfc_sli_release_iocbq(phba, iocb);
1967                         pring->missbufcnt = cnt;
1968                         return cnt;
1969                 }
1970                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
1971                 if (mp2)
1972                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
1973         }
1974         pring->missbufcnt = 0;
1975         return 0;
1976 }
1977
1978 /**
1979  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
1980  * @phba: pointer to lpfc hba data structure.
1981  *
1982  * This routine posts initial receive IOCB buffers to the ELS ring. The
1983  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
1984  * set to 64 IOCBs.
1985  *
1986  * Return codes
1987  *   0 - success (currently always success)
1988  **/
1989 static int
1990 lpfc_post_rcv_buf(struct lpfc_hba *phba)
1991 {
1992         struct lpfc_sli *psli = &phba->sli;
1993
1994         /* Ring 0, ELS / CT buffers */
1995         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
1996         /* Ring 2 - FCP no buffers needed */
1997
1998         return 0;
1999 }
2000
2001 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2002
2003 /**
2004  * lpfc_sha_init - Set up initial array of hash table entries
2005  * @HashResultPointer: pointer to an array as hash table.
2006  *
2007  * This routine sets up the initial values to the array of hash table entries
2008  * for the LC HBAs.
2009  **/
2010 static void
2011 lpfc_sha_init(uint32_t * HashResultPointer)
2012 {
2013         HashResultPointer[0] = 0x67452301;
2014         HashResultPointer[1] = 0xEFCDAB89;
2015         HashResultPointer[2] = 0x98BADCFE;
2016         HashResultPointer[3] = 0x10325476;
2017         HashResultPointer[4] = 0xC3D2E1F0;
2018 }
2019
2020 /**
2021  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2022  * @HashResultPointer: pointer to an initial/result hash table.
2023  * @HashWorkingPointer: pointer to an working hash table.
2024  *
2025  * This routine iterates an initial hash table pointed by @HashResultPointer
2026  * with the values from the working hash table pointeed by @HashWorkingPointer.
2027  * The results are putting back to the initial hash table, returned through
2028  * the @HashResultPointer as the result hash table.
2029  **/
2030 static void
2031 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2032 {
2033         int t;
2034         uint32_t TEMP;
2035         uint32_t A, B, C, D, E;
2036         t = 16;
2037         do {
2038                 HashWorkingPointer[t] =
2039                     S(1,
2040                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2041                                                                      8] ^
2042                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2043         } while (++t <= 79);
2044         t = 0;
2045         A = HashResultPointer[0];
2046         B = HashResultPointer[1];
2047         C = HashResultPointer[2];
2048         D = HashResultPointer[3];
2049         E = HashResultPointer[4];
2050
2051         do {
2052                 if (t < 20) {
2053                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2054                 } else if (t < 40) {
2055                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2056                 } else if (t < 60) {
2057                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2058                 } else {
2059                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2060                 }
2061                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2062                 E = D;
2063                 D = C;
2064                 C = S(30, B);
2065                 B = A;
2066                 A = TEMP;
2067         } while (++t <= 79);
2068
2069         HashResultPointer[0] += A;
2070         HashResultPointer[1] += B;
2071         HashResultPointer[2] += C;
2072         HashResultPointer[3] += D;
2073         HashResultPointer[4] += E;
2074
2075 }
2076
2077 /**
2078  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2079  * @RandomChallenge: pointer to the entry of host challenge random number array.
2080  * @HashWorking: pointer to the entry of the working hash array.
2081  *
2082  * This routine calculates the working hash array referred by @HashWorking
2083  * from the challenge random numbers associated with the host, referred by
2084  * @RandomChallenge. The result is put into the entry of the working hash
2085  * array and returned by reference through @HashWorking.
2086  **/
2087 static void
2088 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2089 {
2090         *HashWorking = (*RandomChallenge ^ *HashWorking);
2091 }
2092
2093 /**
2094  * lpfc_hba_init - Perform special handling for LC HBA initialization
2095  * @phba: pointer to lpfc hba data structure.
2096  * @hbainit: pointer to an array of unsigned 32-bit integers.
2097  *
2098  * This routine performs the special handling for LC HBA initialization.
2099  **/
2100 void
2101 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2102 {
2103         int t;
2104         uint32_t *HashWorking;
2105         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2106
2107         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2108         if (!HashWorking)
2109                 return;
2110
2111         HashWorking[0] = HashWorking[78] = *pwwnn++;
2112         HashWorking[1] = HashWorking[79] = *pwwnn;
2113
2114         for (t = 0; t < 7; t++)
2115                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2116
2117         lpfc_sha_init(hbainit);
2118         lpfc_sha_iterate(hbainit, HashWorking);
2119         kfree(HashWorking);
2120 }
2121
2122 /**
2123  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2124  * @vport: pointer to a virtual N_Port data structure.
2125  *
2126  * This routine performs the necessary cleanups before deleting the @vport.
2127  * It invokes the discovery state machine to perform necessary state
2128  * transitions and to release the ndlps associated with the @vport. Note,
2129  * the physical port is treated as @vport 0.
2130  **/
2131 void
2132 lpfc_cleanup(struct lpfc_vport *vport)
2133 {
2134         struct lpfc_hba   *phba = vport->phba;
2135         struct lpfc_nodelist *ndlp, *next_ndlp;
2136         int i = 0;
2137
2138         if (phba->link_state > LPFC_LINK_DOWN)
2139                 lpfc_port_link_failure(vport);
2140
2141         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2142                 if (!NLP_CHK_NODE_ACT(ndlp)) {
2143                         ndlp = lpfc_enable_node(vport, ndlp,
2144                                                 NLP_STE_UNUSED_NODE);
2145                         if (!ndlp)
2146                                 continue;
2147                         spin_lock_irq(&phba->ndlp_lock);
2148                         NLP_SET_FREE_REQ(ndlp);
2149                         spin_unlock_irq(&phba->ndlp_lock);
2150                         /* Trigger the release of the ndlp memory */
2151                         lpfc_nlp_put(ndlp);
2152                         continue;
2153                 }
2154                 spin_lock_irq(&phba->ndlp_lock);
2155                 if (NLP_CHK_FREE_REQ(ndlp)) {
2156                         /* The ndlp should not be in memory free mode already */
2157                         spin_unlock_irq(&phba->ndlp_lock);
2158                         continue;
2159                 } else
2160                         /* Indicate request for freeing ndlp memory */
2161                         NLP_SET_FREE_REQ(ndlp);
2162                 spin_unlock_irq(&phba->ndlp_lock);
2163
2164                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2165                     ndlp->nlp_DID == Fabric_DID) {
2166                         /* Just free up ndlp with Fabric_DID for vports */
2167                         lpfc_nlp_put(ndlp);
2168                         continue;
2169                 }
2170
2171                 if (ndlp->nlp_type & NLP_FABRIC)
2172                         lpfc_disc_state_machine(vport, ndlp, NULL,
2173                                         NLP_EVT_DEVICE_RECOVERY);
2174
2175                 lpfc_disc_state_machine(vport, ndlp, NULL,
2176                                              NLP_EVT_DEVICE_RM);
2177
2178         }
2179
2180         /* At this point, ALL ndlp's should be gone
2181          * because of the previous NLP_EVT_DEVICE_RM.
2182          * Lets wait for this to happen, if needed.
2183          */
2184         while (!list_empty(&vport->fc_nodes)) {
2185                 if (i++ > 3000) {
2186                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2187                                 "0233 Nodelist not empty\n");
2188                         list_for_each_entry_safe(ndlp, next_ndlp,
2189                                                 &vport->fc_nodes, nlp_listp) {
2190                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2191                                                 LOG_NODE,
2192                                                 "0282 did:x%x ndlp:x%p "
2193                                                 "usgmap:x%x refcnt:%d\n",
2194                                                 ndlp->nlp_DID, (void *)ndlp,
2195                                                 ndlp->nlp_usg_map,
2196                                                 atomic_read(
2197                                                         &ndlp->kref.refcount));
2198                         }
2199                         break;
2200                 }
2201
2202                 /* Wait for any activity on ndlps to settle */
2203                 msleep(10);
2204         }
2205 }
2206
2207 /**
2208  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2209  * @vport: pointer to a virtual N_Port data structure.
2210  *
2211  * This routine stops all the timers associated with a @vport. This function
2212  * is invoked before disabling or deleting a @vport. Note that the physical
2213  * port is treated as @vport 0.
2214  **/
2215 void
2216 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2217 {
2218         del_timer_sync(&vport->els_tmofunc);
2219         del_timer_sync(&vport->fc_fdmitmo);
2220         lpfc_can_disctmo(vport);
2221         return;
2222 }
2223
2224 /**
2225  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2226  * @phba: pointer to lpfc hba data structure.
2227  *
2228  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2229  * caller of this routine should already hold the host lock.
2230  **/
2231 void
2232 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2233 {
2234         /* Clear pending FCF rediscovery wait and failover in progress flags */
2235         phba->fcf.fcf_flag &= ~(FCF_REDISC_PEND |
2236                                 FCF_DEAD_DISC |
2237                                 FCF_ACVL_DISC);
2238         /* Now, try to stop the timer */
2239         del_timer(&phba->fcf.redisc_wait);
2240 }
2241
2242 /**
2243  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2244  * @phba: pointer to lpfc hba data structure.
2245  *
2246  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2247  * checks whether the FCF rediscovery wait timer is pending with the host
2248  * lock held before proceeding with disabling the timer and clearing the
2249  * wait timer pendig flag.
2250  **/
2251 void
2252 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2253 {
2254         spin_lock_irq(&phba->hbalock);
2255         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2256                 /* FCF rediscovery timer already fired or stopped */
2257                 spin_unlock_irq(&phba->hbalock);
2258                 return;
2259         }
2260         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2261         spin_unlock_irq(&phba->hbalock);
2262 }
2263
2264 /**
2265  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2266  * @phba: pointer to lpfc hba data structure.
2267  *
2268  * This routine stops all the timers associated with a HBA. This function is
2269  * invoked before either putting a HBA offline or unloading the driver.
2270  **/
2271 void
2272 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2273 {
2274         lpfc_stop_vport_timers(phba->pport);
2275         del_timer_sync(&phba->sli.mbox_tmo);
2276         del_timer_sync(&phba->fabric_block_timer);
2277         del_timer_sync(&phba->eratt_poll);
2278         del_timer_sync(&phba->hb_tmofunc);
2279         phba->hb_outstanding = 0;
2280
2281         switch (phba->pci_dev_grp) {
2282         case LPFC_PCI_DEV_LP:
2283                 /* Stop any LightPulse device specific driver timers */
2284                 del_timer_sync(&phba->fcp_poll_timer);
2285                 break;
2286         case LPFC_PCI_DEV_OC:
2287                 /* Stop any OneConnect device sepcific driver timers */
2288                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2289                 break;
2290         default:
2291                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2292                                 "0297 Invalid device group (x%x)\n",
2293                                 phba->pci_dev_grp);
2294                 break;
2295         }
2296         return;
2297 }
2298
2299 /**
2300  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2301  * @phba: pointer to lpfc hba data structure.
2302  *
2303  * This routine marks a HBA's management interface as blocked. Once the HBA's
2304  * management interface is marked as blocked, all the user space access to
2305  * the HBA, whether they are from sysfs interface or libdfc interface will
2306  * all be blocked. The HBA is set to block the management interface when the
2307  * driver prepares the HBA interface for online or offline.
2308  **/
2309 static void
2310 lpfc_block_mgmt_io(struct lpfc_hba * phba)
2311 {
2312         unsigned long iflag;
2313         uint8_t actcmd = MBX_HEARTBEAT;
2314         unsigned long timeout;
2315
2316
2317         spin_lock_irqsave(&phba->hbalock, iflag);
2318         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2319         if (phba->sli.mbox_active)
2320                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2321         spin_unlock_irqrestore(&phba->hbalock, iflag);
2322         /* Determine how long we might wait for the active mailbox
2323          * command to be gracefully completed by firmware.
2324          */
2325         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) +
2326                         jiffies;
2327         /* Wait for the outstnading mailbox command to complete */
2328         while (phba->sli.mbox_active) {
2329                 /* Check active mailbox complete status every 2ms */
2330                 msleep(2);
2331                 if (time_after(jiffies, timeout)) {
2332                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2333                                 "2813 Mgmt IO is Blocked %x "
2334                                 "- mbox cmd %x still active\n",
2335                                 phba->sli.sli_flag, actcmd);
2336                         break;
2337                 }
2338         }
2339 }
2340
2341 /**
2342  * lpfc_online - Initialize and bring a HBA online
2343  * @phba: pointer to lpfc hba data structure.
2344  *
2345  * This routine initializes the HBA and brings a HBA online. During this
2346  * process, the management interface is blocked to prevent user space access
2347  * to the HBA interfering with the driver initialization.
2348  *
2349  * Return codes
2350  *   0 - successful
2351  *   1 - failed
2352  **/
2353 int
2354 lpfc_online(struct lpfc_hba *phba)
2355 {
2356         struct lpfc_vport *vport;
2357         struct lpfc_vport **vports;
2358         int i;
2359
2360         if (!phba)
2361                 return 0;
2362         vport = phba->pport;
2363
2364         if (!(vport->fc_flag & FC_OFFLINE_MODE))
2365                 return 0;
2366
2367         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2368                         "0458 Bring Adapter online\n");
2369
2370         lpfc_block_mgmt_io(phba);
2371
2372         if (!lpfc_sli_queue_setup(phba)) {
2373                 lpfc_unblock_mgmt_io(phba);
2374                 return 1;
2375         }
2376
2377         if (phba->sli_rev == LPFC_SLI_REV4) {
2378                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
2379                         lpfc_unblock_mgmt_io(phba);
2380                         return 1;
2381                 }
2382         } else {
2383                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
2384                         lpfc_unblock_mgmt_io(phba);
2385                         return 1;
2386                 }
2387         }
2388
2389         vports = lpfc_create_vport_work_array(phba);
2390         if (vports != NULL)
2391                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2392                         struct Scsi_Host *shost;
2393                         shost = lpfc_shost_from_vport(vports[i]);
2394                         spin_lock_irq(shost->host_lock);
2395                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
2396                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2397                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2398                         if (phba->sli_rev == LPFC_SLI_REV4)
2399                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
2400                         spin_unlock_irq(shost->host_lock);
2401                 }
2402                 lpfc_destroy_vport_work_array(phba, vports);
2403
2404         lpfc_unblock_mgmt_io(phba);
2405         return 0;
2406 }
2407
2408 /**
2409  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
2410  * @phba: pointer to lpfc hba data structure.
2411  *
2412  * This routine marks a HBA's management interface as not blocked. Once the
2413  * HBA's management interface is marked as not blocked, all the user space
2414  * access to the HBA, whether they are from sysfs interface or libdfc
2415  * interface will be allowed. The HBA is set to block the management interface
2416  * when the driver prepares the HBA interface for online or offline and then
2417  * set to unblock the management interface afterwards.
2418  **/
2419 void
2420 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
2421 {
2422         unsigned long iflag;
2423
2424         spin_lock_irqsave(&phba->hbalock, iflag);
2425         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
2426         spin_unlock_irqrestore(&phba->hbalock, iflag);
2427 }
2428
2429 /**
2430  * lpfc_offline_prep - Prepare a HBA to be brought offline
2431  * @phba: pointer to lpfc hba data structure.
2432  *
2433  * This routine is invoked to prepare a HBA to be brought offline. It performs
2434  * unregistration login to all the nodes on all vports and flushes the mailbox
2435  * queue to make it ready to be brought offline.
2436  **/
2437 void
2438 lpfc_offline_prep(struct lpfc_hba * phba)
2439 {
2440         struct lpfc_vport *vport = phba->pport;
2441         struct lpfc_nodelist  *ndlp, *next_ndlp;
2442         struct lpfc_vport **vports;
2443         struct Scsi_Host *shost;
2444         int i;
2445
2446         if (vport->fc_flag & FC_OFFLINE_MODE)
2447                 return;
2448
2449         lpfc_block_mgmt_io(phba);
2450
2451         lpfc_linkdown(phba);
2452
2453         /* Issue an unreg_login to all nodes on all vports */
2454         vports = lpfc_create_vport_work_array(phba);
2455         if (vports != NULL) {
2456                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2457                         if (vports[i]->load_flag & FC_UNLOADING)
2458                                 continue;
2459                         shost = lpfc_shost_from_vport(vports[i]);
2460                         spin_lock_irq(shost->host_lock);
2461                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
2462                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2463                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
2464                         spin_unlock_irq(shost->host_lock);
2465
2466                         shost = lpfc_shost_from_vport(vports[i]);
2467                         list_for_each_entry_safe(ndlp, next_ndlp,
2468                                                  &vports[i]->fc_nodes,
2469                                                  nlp_listp) {
2470                                 if (!NLP_CHK_NODE_ACT(ndlp))
2471                                         continue;
2472                                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2473                                         continue;
2474                                 if (ndlp->nlp_type & NLP_FABRIC) {
2475                                         lpfc_disc_state_machine(vports[i], ndlp,
2476                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
2477                                         lpfc_disc_state_machine(vports[i], ndlp,
2478                                                 NULL, NLP_EVT_DEVICE_RM);
2479                                 }
2480                                 spin_lock_irq(shost->host_lock);
2481                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2482                                 spin_unlock_irq(shost->host_lock);
2483                                 lpfc_unreg_rpi(vports[i], ndlp);
2484                         }
2485                 }
2486         }
2487         lpfc_destroy_vport_work_array(phba, vports);
2488
2489         lpfc_sli_mbox_sys_shutdown(phba);
2490 }
2491
2492 /**
2493  * lpfc_offline - Bring a HBA offline
2494  * @phba: pointer to lpfc hba data structure.
2495  *
2496  * This routine actually brings a HBA offline. It stops all the timers
2497  * associated with the HBA, brings down the SLI layer, and eventually
2498  * marks the HBA as in offline state for the upper layer protocol.
2499  **/
2500 void
2501 lpfc_offline(struct lpfc_hba *phba)
2502 {
2503         struct Scsi_Host  *shost;
2504         struct lpfc_vport **vports;
2505         int i;
2506
2507         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
2508                 return;
2509
2510         /* stop port and all timers associated with this hba */
2511         lpfc_stop_port(phba);
2512         vports = lpfc_create_vport_work_array(phba);
2513         if (vports != NULL)
2514                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
2515                         lpfc_stop_vport_timers(vports[i]);
2516         lpfc_destroy_vport_work_array(phba, vports);
2517         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2518                         "0460 Bring Adapter offline\n");
2519         /* Bring down the SLI Layer and cleanup.  The HBA is offline
2520            now.  */
2521         lpfc_sli_hba_down(phba);
2522         spin_lock_irq(&phba->hbalock);
2523         phba->work_ha = 0;
2524         spin_unlock_irq(&phba->hbalock);
2525         vports = lpfc_create_vport_work_array(phba);
2526         if (vports != NULL)
2527                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2528                         shost = lpfc_shost_from_vport(vports[i]);
2529                         spin_lock_irq(shost->host_lock);
2530                         vports[i]->work_port_events = 0;
2531                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
2532                         spin_unlock_irq(shost->host_lock);
2533                 }
2534         lpfc_destroy_vport_work_array(phba, vports);
2535 }
2536
2537 /**
2538  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
2539  * @phba: pointer to lpfc hba data structure.
2540  *
2541  * This routine is to free all the SCSI buffers and IOCBs from the driver
2542  * list back to kernel. It is called from lpfc_pci_remove_one to free
2543  * the internal resources before the device is removed from the system.
2544  *
2545  * Return codes
2546  *   0 - successful (for now, it always returns 0)
2547  **/
2548 static int
2549 lpfc_scsi_free(struct lpfc_hba *phba)
2550 {
2551         struct lpfc_scsi_buf *sb, *sb_next;
2552         struct lpfc_iocbq *io, *io_next;
2553
2554         spin_lock_irq(&phba->hbalock);
2555         /* Release all the lpfc_scsi_bufs maintained by this host. */
2556         spin_lock(&phba->scsi_buf_list_lock);
2557         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
2558                 list_del(&sb->list);
2559                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
2560                               sb->dma_handle);
2561                 kfree(sb);
2562                 phba->total_scsi_bufs--;
2563         }
2564         spin_unlock(&phba->scsi_buf_list_lock);
2565
2566         /* Release all the lpfc_iocbq entries maintained by this host. */
2567         list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
2568                 list_del(&io->list);
2569                 kfree(io);
2570                 phba->total_iocbq_bufs--;
2571         }
2572         spin_unlock_irq(&phba->hbalock);
2573         return 0;
2574 }
2575
2576 /**
2577  * lpfc_create_port - Create an FC port
2578  * @phba: pointer to lpfc hba data structure.
2579  * @instance: a unique integer ID to this FC port.
2580  * @dev: pointer to the device data structure.
2581  *
2582  * This routine creates a FC port for the upper layer protocol. The FC port
2583  * can be created on top of either a physical port or a virtual port provided
2584  * by the HBA. This routine also allocates a SCSI host data structure (shost)
2585  * and associates the FC port created before adding the shost into the SCSI
2586  * layer.
2587  *
2588  * Return codes
2589  *   @vport - pointer to the virtual N_Port data structure.
2590  *   NULL - port create failed.
2591  **/
2592 struct lpfc_vport *
2593 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
2594 {
2595         struct lpfc_vport *vport;
2596         struct Scsi_Host  *shost;
2597         int error = 0;
2598
2599         if (dev != &phba->pcidev->dev)
2600                 shost = scsi_host_alloc(&lpfc_vport_template,
2601                                         sizeof(struct lpfc_vport));
2602         else
2603                 shost = scsi_host_alloc(&lpfc_template,
2604                                         sizeof(struct lpfc_vport));
2605         if (!shost)
2606                 goto out;
2607
2608         vport = (struct lpfc_vport *) shost->hostdata;
2609         vport->phba = phba;
2610         vport->load_flag |= FC_LOADING;
2611         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2612         vport->fc_rscn_flush = 0;
2613
2614         lpfc_get_vport_cfgparam(vport);
2615         shost->unique_id = instance;
2616         shost->max_id = LPFC_MAX_TARGET;
2617         shost->max_lun = vport->cfg_max_luns;
2618         shost->this_id = -1;
2619         shost->max_cmd_len = 16;
2620         if (phba->sli_rev == LPFC_SLI_REV4) {
2621                 shost->dma_boundary =
2622                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
2623                 shost->sg_tablesize = phba->cfg_sg_seg_cnt;
2624         }
2625
2626         /*
2627          * Set initial can_queue value since 0 is no longer supported and
2628          * scsi_add_host will fail. This will be adjusted later based on the
2629          * max xri value determined in hba setup.
2630          */
2631         shost->can_queue = phba->cfg_hba_queue_depth - 10;
2632         if (dev != &phba->pcidev->dev) {
2633                 shost->transportt = lpfc_vport_transport_template;
2634                 vport->port_type = LPFC_NPIV_PORT;
2635         } else {
2636                 shost->transportt = lpfc_transport_template;
2637                 vport->port_type = LPFC_PHYSICAL_PORT;
2638         }
2639
2640         /* Initialize all internally managed lists. */
2641         INIT_LIST_HEAD(&vport->fc_nodes);
2642         INIT_LIST_HEAD(&vport->rcv_buffer_list);
2643         spin_lock_init(&vport->work_port_lock);
2644
2645         init_timer(&vport->fc_disctmo);
2646         vport->fc_disctmo.function = lpfc_disc_timeout;
2647         vport->fc_disctmo.data = (unsigned long)vport;
2648
2649         init_timer(&vport->fc_fdmitmo);
2650         vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
2651         vport->fc_fdmitmo.data = (unsigned long)vport;
2652
2653         init_timer(&vport->els_tmofunc);
2654         vport->els_tmofunc.function = lpfc_els_timeout;
2655         vport->els_tmofunc.data = (unsigned long)vport;
2656         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
2657         if (error)
2658                 goto out_put_shost;
2659
2660         spin_lock_irq(&phba->hbalock);
2661         list_add_tail(&vport->listentry, &phba->port_list);
2662         spin_unlock_irq(&phba->hbalock);
2663         return vport;
2664
2665 out_put_shost:
2666         scsi_host_put(shost);
2667 out:
2668         return NULL;
2669 }
2670
2671 /**
2672  * destroy_port -  destroy an FC port
2673  * @vport: pointer to an lpfc virtual N_Port data structure.
2674  *
2675  * This routine destroys a FC port from the upper layer protocol. All the
2676  * resources associated with the port are released.
2677  **/
2678 void
2679 destroy_port(struct lpfc_vport *vport)
2680 {
2681         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2682         struct lpfc_hba  *phba = vport->phba;
2683
2684         lpfc_debugfs_terminate(vport);
2685         fc_remove_host(shost);
2686         scsi_remove_host(shost);
2687
2688         spin_lock_irq(&phba->hbalock);
2689         list_del_init(&vport->listentry);
2690         spin_unlock_irq(&phba->hbalock);
2691
2692         lpfc_cleanup(vport);
2693         return;
2694 }
2695
2696 /**
2697  * lpfc_get_instance - Get a unique integer ID
2698  *
2699  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
2700  * uses the kernel idr facility to perform the task.
2701  *
2702  * Return codes:
2703  *   instance - a unique integer ID allocated as the new instance.
2704  *   -1 - lpfc get instance failed.
2705  **/
2706 int
2707 lpfc_get_instance(void)
2708 {
2709         int instance = 0;
2710
2711         /* Assign an unused number */
2712         if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
2713                 return -1;
2714         if (idr_get_new(&lpfc_hba_index, NULL, &instance))
2715                 return -1;
2716         return instance;
2717 }
2718
2719 /**
2720  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
2721  * @shost: pointer to SCSI host data structure.
2722  * @time: elapsed time of the scan in jiffies.
2723  *
2724  * This routine is called by the SCSI layer with a SCSI host to determine
2725  * whether the scan host is finished.
2726  *
2727  * Note: there is no scan_start function as adapter initialization will have
2728  * asynchronously kicked off the link initialization.
2729  *
2730  * Return codes
2731  *   0 - SCSI host scan is not over yet.
2732  *   1 - SCSI host scan is over.
2733  **/
2734 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
2735 {
2736         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2737         struct lpfc_hba   *phba = vport->phba;
2738         int stat = 0;
2739
2740         spin_lock_irq(shost->host_lock);
2741
2742         if (vport->load_flag & FC_UNLOADING) {
2743                 stat = 1;
2744                 goto finished;
2745         }
2746         if (time >= 30 * HZ) {
2747                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2748                                 "0461 Scanning longer than 30 "
2749                                 "seconds.  Continuing initialization\n");
2750                 stat = 1;
2751                 goto finished;
2752         }
2753         if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) {
2754                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2755                                 "0465 Link down longer than 15 "
2756                                 "seconds.  Continuing initialization\n");
2757                 stat = 1;
2758                 goto finished;
2759         }
2760
2761         if (vport->port_state != LPFC_VPORT_READY)
2762                 goto finished;
2763         if (vport->num_disc_nodes || vport->fc_prli_sent)
2764                 goto finished;
2765         if (vport->fc_map_cnt == 0 && time < 2 * HZ)
2766                 goto finished;
2767         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
2768                 goto finished;
2769
2770         stat = 1;
2771
2772 finished:
2773         spin_unlock_irq(shost->host_lock);
2774         return stat;
2775 }
2776
2777 /**
2778  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
2779  * @shost: pointer to SCSI host data structure.
2780  *
2781  * This routine initializes a given SCSI host attributes on a FC port. The
2782  * SCSI host can be either on top of a physical port or a virtual port.
2783  **/
2784 void lpfc_host_attrib_init(struct Scsi_Host *shost)
2785 {
2786         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2787         struct lpfc_hba   *phba = vport->phba;
2788         /*
2789          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
2790          */
2791
2792         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
2793         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
2794         fc_host_supported_classes(shost) = FC_COS_CLASS3;
2795
2796         memset(fc_host_supported_fc4s(shost), 0,
2797                sizeof(fc_host_supported_fc4s(shost)));
2798         fc_host_supported_fc4s(shost)[2] = 1;
2799         fc_host_supported_fc4s(shost)[7] = 1;
2800
2801         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
2802                                  sizeof fc_host_symbolic_name(shost));
2803
2804         fc_host_supported_speeds(shost) = 0;
2805         if (phba->lmt & LMT_10Gb)
2806                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
2807         if (phba->lmt & LMT_8Gb)
2808                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
2809         if (phba->lmt & LMT_4Gb)
2810                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
2811         if (phba->lmt & LMT_2Gb)
2812                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
2813         if (phba->lmt & LMT_1Gb)
2814                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
2815
2816         fc_host_maxframe_size(shost) =
2817                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
2818                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
2819
2820         /* This value is also unchanging */
2821         memset(fc_host_active_fc4s(shost), 0,
2822                sizeof(fc_host_active_fc4s(shost)));
2823         fc_host_active_fc4s(shost)[2] = 1;
2824         fc_host_active_fc4s(shost)[7] = 1;
2825
2826         fc_host_max_npiv_vports(shost) = phba->max_vpi;
2827         spin_lock_irq(shost->host_lock);
2828         vport->load_flag &= ~FC_LOADING;
2829         spin_unlock_irq(shost->host_lock);
2830 }
2831
2832 /**
2833  * lpfc_stop_port_s3 - Stop SLI3 device port
2834  * @phba: pointer to lpfc hba data structure.
2835  *
2836  * This routine is invoked to stop an SLI3 device port, it stops the device
2837  * from generating interrupts and stops the device driver's timers for the
2838  * device.
2839  **/
2840 static void
2841 lpfc_stop_port_s3(struct lpfc_hba *phba)
2842 {
2843         /* Clear all interrupt enable conditions */
2844         writel(0, phba->HCregaddr);
2845         readl(phba->HCregaddr); /* flush */
2846         /* Clear all pending interrupts */
2847         writel(0xffffffff, phba->HAregaddr);
2848         readl(phba->HAregaddr); /* flush */
2849
2850         /* Reset some HBA SLI setup states */
2851         lpfc_stop_hba_timers(phba);
2852         phba->pport->work_port_events = 0;
2853 }
2854
2855 /**
2856  * lpfc_stop_port_s4 - Stop SLI4 device port
2857  * @phba: pointer to lpfc hba data structure.
2858  *
2859  * This routine is invoked to stop an SLI4 device port, it stops the device
2860  * from generating interrupts and stops the device driver's timers for the
2861  * device.
2862  **/
2863 static void
2864 lpfc_stop_port_s4(struct lpfc_hba *phba)
2865 {
2866         /* Reset some HBA SLI4 setup states */
2867         lpfc_stop_hba_timers(phba);
2868         phba->pport->work_port_events = 0;
2869         phba->sli4_hba.intr_enable = 0;
2870 }
2871
2872 /**
2873  * lpfc_stop_port - Wrapper function for stopping hba port
2874  * @phba: Pointer to HBA context object.
2875  *
2876  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
2877  * the API jump table function pointer from the lpfc_hba struct.
2878  **/
2879 void
2880 lpfc_stop_port(struct lpfc_hba *phba)
2881 {
2882         phba->lpfc_stop_port(phba);
2883 }
2884
2885 /**
2886  * lpfc_sli4_remove_dflt_fcf - Remove the driver default fcf record from the port.
2887  * @phba: pointer to lpfc hba data structure.
2888  *
2889  * This routine is invoked to remove the driver default fcf record from
2890  * the port.  This routine currently acts on FCF Index 0.
2891  *
2892  **/
2893 void
2894 lpfc_sli_remove_dflt_fcf(struct lpfc_hba *phba)
2895 {
2896         int rc = 0;
2897         LPFC_MBOXQ_t *mboxq;
2898         struct lpfc_mbx_del_fcf_tbl_entry *del_fcf_record;
2899         uint32_t mbox_tmo, req_len;
2900         uint32_t shdr_status, shdr_add_status;
2901
2902         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2903         if (!mboxq) {
2904                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2905                         "2020 Failed to allocate mbox for ADD_FCF cmd\n");
2906                 return;
2907         }
2908
2909         req_len = sizeof(struct lpfc_mbx_del_fcf_tbl_entry) -
2910                   sizeof(struct lpfc_sli4_cfg_mhdr);
2911         rc = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
2912                               LPFC_MBOX_OPCODE_FCOE_DELETE_FCF,
2913                               req_len, LPFC_SLI4_MBX_EMBED);
2914         /*
2915          * In phase 1, there is a single FCF index, 0.  In phase2, the driver
2916          * supports multiple FCF indices.
2917          */
2918         del_fcf_record = &mboxq->u.mqe.un.del_fcf_entry;
2919         bf_set(lpfc_mbx_del_fcf_tbl_count, del_fcf_record, 1);
2920         bf_set(lpfc_mbx_del_fcf_tbl_index, del_fcf_record,
2921                phba->fcf.current_rec.fcf_indx);
2922
2923         if (!phba->sli4_hba.intr_enable)
2924                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
2925         else {
2926                 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
2927                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
2928         }
2929         /* The IOCTL status is embedded in the mailbox subheader. */
2930         shdr_status = bf_get(lpfc_mbox_hdr_status,
2931                              &del_fcf_record->header.cfg_shdr.response);
2932         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
2933                                  &del_fcf_record->header.cfg_shdr.response);
2934         if (shdr_status || shdr_add_status || rc != MBX_SUCCESS) {
2935                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2936                                 "2516 DEL FCF of default FCF Index failed "
2937                                 "mbx status x%x, status x%x add_status x%x\n",
2938                                 rc, shdr_status, shdr_add_status);
2939         }
2940         if (rc != MBX_TIMEOUT)
2941                 mempool_free(mboxq, phba->mbox_mem_pool);
2942 }
2943
2944 /**
2945  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
2946  * @phba: Pointer to hba for which this call is being executed.
2947  *
2948  * This routine starts the timer waiting for the FCF rediscovery to complete.
2949  **/
2950 void
2951 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
2952 {
2953         unsigned long fcf_redisc_wait_tmo =
2954                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
2955         /* Start fcf rediscovery wait period timer */
2956         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
2957         spin_lock_irq(&phba->hbalock);
2958         /* Allow action to new fcf asynchronous event */
2959         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
2960         /* Mark the FCF rediscovery pending state */
2961         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
2962         spin_unlock_irq(&phba->hbalock);
2963 }
2964
2965 /**
2966  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
2967  * @ptr: Map to lpfc_hba data structure pointer.
2968  *
2969  * This routine is invoked when waiting for FCF table rediscover has been
2970  * timed out. If new FCF record(s) has (have) been discovered during the
2971  * wait period, a new FCF event shall be added to the FCOE async event
2972  * list, and then worker thread shall be waked up for processing from the
2973  * worker thread context.
2974  **/
2975 void
2976 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
2977 {
2978         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
2979
2980         /* Don't send FCF rediscovery event if timer cancelled */
2981         spin_lock_irq(&phba->hbalock);
2982         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2983                 spin_unlock_irq(&phba->hbalock);
2984                 return;
2985         }
2986         /* Clear FCF rediscovery timer pending flag */
2987         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2988         /* FCF rediscovery event to worker thread */
2989         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
2990         spin_unlock_irq(&phba->hbalock);
2991         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
2992                         "2776 FCF rediscover wait timer expired, post "
2993                         "a worker thread event for FCF table scan\n");
2994         /* wake up worker thread */
2995         lpfc_worker_wake_up(phba);
2996 }
2997
2998 /**
2999  * lpfc_sli4_fw_cfg_check - Read the firmware config and verify FCoE support
3000  * @phba: pointer to lpfc hba data structure.
3001  *
3002  * This function uses the QUERY_FW_CFG mailbox command to determine if the
3003  * firmware loaded supports FCoE. A return of zero indicates that the mailbox
3004  * was successful and the firmware supports FCoE. Any other return indicates
3005  * a error. It is assumed that this function will be called before interrupts
3006  * are enabled.
3007  **/
3008 static int
3009 lpfc_sli4_fw_cfg_check(struct lpfc_hba *phba)
3010 {
3011         int rc = 0;
3012         LPFC_MBOXQ_t *mboxq;
3013         struct lpfc_mbx_query_fw_cfg *query_fw_cfg;
3014         uint32_t length;
3015         uint32_t shdr_status, shdr_add_status;
3016
3017         mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3018         if (!mboxq) {
3019                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3020                                 "2621 Failed to allocate mbox for "
3021                                 "query firmware config cmd\n");
3022                 return -ENOMEM;
3023         }
3024         query_fw_cfg = &mboxq->u.mqe.un.query_fw_cfg;
3025         length = (sizeof(struct lpfc_mbx_query_fw_cfg) -
3026                   sizeof(struct lpfc_sli4_cfg_mhdr));
3027         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
3028                          LPFC_MBOX_OPCODE_QUERY_FW_CFG,
3029                          length, LPFC_SLI4_MBX_EMBED);
3030         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
3031         /* The IOCTL status is embedded in the mailbox subheader. */
3032         shdr_status = bf_get(lpfc_mbox_hdr_status,
3033                              &query_fw_cfg->header.cfg_shdr.response);
3034         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
3035                                  &query_fw_cfg->header.cfg_shdr.response);
3036         if (shdr_status || shdr_add_status || rc != MBX_SUCCESS) {
3037                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3038                                 "2622 Query Firmware Config failed "
3039                                 "mbx status x%x, status x%x add_status x%x\n",
3040                                 rc, shdr_status, shdr_add_status);
3041                 return -EINVAL;
3042         }
3043         if (!bf_get(lpfc_function_mode_fcoe_i, query_fw_cfg)) {
3044                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3045                                 "2623 FCoE Function not supported by firmware. "
3046                                 "Function mode = %08x\n",
3047                                 query_fw_cfg->function_mode);
3048                 return -EINVAL;
3049         }
3050         if (rc != MBX_TIMEOUT)
3051                 mempool_free(mboxq, phba->mbox_mem_pool);
3052         return 0;
3053 }
3054
3055 /**
3056  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3057  * @phba: pointer to lpfc hba data structure.
3058  * @acqe_link: pointer to the async link completion queue entry.
3059  *
3060  * This routine is to parse the SLI4 link-attention link fault code and
3061  * translate it into the base driver's read link attention mailbox command
3062  * status.
3063  *
3064  * Return: Link-attention status in terms of base driver's coding.
3065  **/
3066 static uint16_t
3067 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3068                            struct lpfc_acqe_link *acqe_link)
3069 {
3070         uint16_t latt_fault;
3071
3072         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3073         case LPFC_ASYNC_LINK_FAULT_NONE:
3074         case LPFC_ASYNC_LINK_FAULT_LOCAL:
3075         case LPFC_ASYNC_LINK_FAULT_REMOTE:
3076                 latt_fault = 0;
3077                 break;
3078         default:
3079                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3080                                 "0398 Invalid link fault code: x%x\n",
3081                                 bf_get(lpfc_acqe_link_fault, acqe_link));
3082                 latt_fault = MBXERR_ERROR;
3083                 break;
3084         }
3085         return latt_fault;
3086 }
3087
3088 /**
3089  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3090  * @phba: pointer to lpfc hba data structure.
3091  * @acqe_link: pointer to the async link completion queue entry.
3092  *
3093  * This routine is to parse the SLI4 link attention type and translate it
3094  * into the base driver's link attention type coding.
3095  *
3096  * Return: Link attention type in terms of base driver's coding.
3097  **/
3098 static uint8_t
3099 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3100                           struct lpfc_acqe_link *acqe_link)
3101 {
3102         uint8_t att_type;
3103
3104         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3105         case LPFC_ASYNC_LINK_STATUS_DOWN:
3106         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3107                 att_type = AT_LINK_DOWN;
3108                 break;
3109         case LPFC_ASYNC_LINK_STATUS_UP:
3110                 /* Ignore physical link up events - wait for logical link up */
3111                 att_type = AT_RESERVED;
3112                 break;
3113         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3114                 att_type = AT_LINK_UP;
3115                 break;
3116         default:
3117                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3118                                 "0399 Invalid link attention type: x%x\n",
3119                                 bf_get(lpfc_acqe_link_status, acqe_link));
3120                 att_type = AT_RESERVED;
3121                 break;
3122         }
3123         return att_type;
3124 }
3125
3126 /**
3127  * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed
3128  * @phba: pointer to lpfc hba data structure.
3129  * @acqe_link: pointer to the async link completion queue entry.
3130  *
3131  * This routine is to parse the SLI4 link-attention link speed and translate
3132  * it into the base driver's link-attention link speed coding.
3133  *
3134  * Return: Link-attention link speed in terms of base driver's coding.
3135  **/
3136 static uint8_t
3137 lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba,
3138                                 struct lpfc_acqe_link *acqe_link)
3139 {
3140         uint8_t link_speed;
3141
3142         switch (bf_get(lpfc_acqe_link_speed, acqe_link)) {
3143         case LPFC_ASYNC_LINK_SPEED_ZERO:
3144                 link_speed = LA_UNKNW_LINK;
3145                 break;
3146         case LPFC_ASYNC_LINK_SPEED_10MBPS:
3147                 link_speed = LA_UNKNW_LINK;
3148                 break;
3149         case LPFC_ASYNC_LINK_SPEED_100MBPS:
3150                 link_speed = LA_UNKNW_LINK;
3151                 break;
3152         case LPFC_ASYNC_LINK_SPEED_1GBPS:
3153                 link_speed = LA_1GHZ_LINK;
3154                 break;
3155         case LPFC_ASYNC_LINK_SPEED_10GBPS:
3156                 link_speed = LA_10GHZ_LINK;
3157                 break;
3158         default:
3159                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3160                                 "0483 Invalid link-attention link speed: x%x\n",
3161                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3162                 link_speed = LA_UNKNW_LINK;
3163                 break;
3164         }
3165         return link_speed;
3166 }
3167
3168 /**
3169  * lpfc_sli4_async_link_evt - Process the asynchronous link event
3170  * @phba: pointer to lpfc hba data structure.
3171  * @acqe_link: pointer to the async link completion queue entry.
3172  *
3173  * This routine is to handle the SLI4 asynchronous link event.
3174  **/
3175 static void
3176 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3177                          struct lpfc_acqe_link *acqe_link)
3178 {
3179         struct lpfc_dmabuf *mp;
3180         LPFC_MBOXQ_t *pmb;
3181         MAILBOX_t *mb;
3182         READ_LA_VAR *la;
3183         uint8_t att_type;
3184
3185         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3186         if (att_type != AT_LINK_DOWN && att_type != AT_LINK_UP)
3187                 return;
3188         phba->fcoe_eventtag = acqe_link->event_tag;
3189         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3190         if (!pmb) {
3191                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3192                                 "0395 The mboxq allocation failed\n");
3193                 return;
3194         }
3195         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3196         if (!mp) {
3197                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3198                                 "0396 The lpfc_dmabuf allocation failed\n");
3199                 goto out_free_pmb;
3200         }
3201         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3202         if (!mp->virt) {
3203                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3204                                 "0397 The mbuf allocation failed\n");
3205                 goto out_free_dmabuf;
3206         }
3207
3208         /* Cleanup any outstanding ELS commands */
3209         lpfc_els_flush_all_cmd(phba);
3210
3211         /* Block ELS IOCBs until we have done process link event */
3212         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3213
3214         /* Update link event statistics */
3215         phba->sli.slistat.link_event++;
3216
3217         /* Create pseudo lpfc_handle_latt mailbox command from link ACQE */
3218         lpfc_read_la(phba, pmb, mp);
3219         pmb->vport = phba->pport;
3220
3221         /* Parse and translate status field */
3222         mb = &pmb->u.mb;
3223         mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
3224
3225         /* Parse and translate link attention fields */
3226         la = (READ_LA_VAR *) &pmb->u.mb.un.varReadLA;
3227         la->eventTag = acqe_link->event_tag;
3228         la->attType = att_type;
3229         la->UlnkSpeed = lpfc_sli4_parse_latt_link_speed(phba, acqe_link);
3230
3231         /* Fake the the following irrelvant fields */
3232         la->topology = TOPOLOGY_PT_PT;
3233         la->granted_AL_PA = 0;
3234         la->il = 0;
3235         la->pb = 0;
3236         la->fa = 0;
3237         la->mm = 0;
3238
3239         /* Keep the link status for extra SLI4 state machine reference */
3240         phba->sli4_hba.link_state.speed =
3241                                 bf_get(lpfc_acqe_link_speed, acqe_link);
3242         phba->sli4_hba.link_state.duplex =
3243                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
3244         phba->sli4_hba.link_state.status =
3245                                 bf_get(lpfc_acqe_link_status, acqe_link);
3246         phba->sli4_hba.link_state.physical =
3247                                 bf_get(lpfc_acqe_link_physical, acqe_link);
3248         phba->sli4_hba.link_state.fault =
3249                                 bf_get(lpfc_acqe_link_fault, acqe_link);
3250         phba->sli4_hba.link_state.logical_speed =
3251                                 bf_get(lpfc_acqe_qos_link_speed, acqe_link);
3252
3253         /* Invoke the lpfc_handle_latt mailbox command callback function */
3254         lpfc_mbx_cmpl_read_la(phba, pmb);
3255
3256         return;
3257
3258 out_free_dmabuf:
3259         kfree(mp);
3260 out_free_pmb:
3261         mempool_free(pmb, phba->mbox_mem_pool);
3262 }
3263
3264 /**
3265  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
3266  * @vport: pointer to vport data structure.
3267  *
3268  * This routine is to perform Clear Virtual Link (CVL) on a vport in
3269  * response to a CVL event.
3270  *
3271  * Return the pointer to the ndlp with the vport if successful, otherwise
3272  * return NULL.
3273  **/
3274 static struct lpfc_nodelist *
3275 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
3276 {
3277         struct lpfc_nodelist *ndlp;
3278         struct Scsi_Host *shost;
3279         struct lpfc_hba *phba;
3280
3281         if (!vport)
3282                 return NULL;
3283         phba = vport->phba;
3284         if (!phba)
3285                 return NULL;
3286         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3287         if (!ndlp) {
3288                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3289                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3290                 if (!ndlp)
3291                         return 0;
3292                 lpfc_nlp_init(vport, ndlp, Fabric_DID);
3293                 /* Set the node type */
3294                 ndlp->nlp_type |= NLP_FABRIC;
3295                 /* Put ndlp onto node list */
3296                 lpfc_enqueue_node(vport, ndlp);
3297         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3298                 /* re-setup ndlp without removing from node list */
3299                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
3300                 if (!ndlp)
3301                         return 0;
3302         }
3303         if (phba->pport->port_state < LPFC_FLOGI)
3304                 return NULL;
3305         /* If virtual link is not yet instantiated ignore CVL */
3306         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC))
3307                 return NULL;
3308         shost = lpfc_shost_from_vport(vport);
3309         if (!shost)
3310                 return NULL;
3311         lpfc_linkdown_port(vport);
3312         lpfc_cleanup_pending_mbox(vport);
3313         spin_lock_irq(shost->host_lock);
3314         vport->fc_flag |= FC_VPORT_CVL_RCVD;
3315         spin_unlock_irq(shost->host_lock);
3316
3317         return ndlp;
3318 }
3319
3320 /**
3321  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
3322  * @vport: pointer to lpfc hba data structure.
3323  *
3324  * This routine is to perform Clear Virtual Link (CVL) on all vports in
3325  * response to a FCF dead event.
3326  **/
3327 static void
3328 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
3329 {
3330         struct lpfc_vport **vports;
3331         int i;
3332
3333         vports = lpfc_create_vport_work_array(phba);
3334         if (vports)
3335                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3336                         lpfc_sli4_perform_vport_cvl(vports[i]);
3337         lpfc_destroy_vport_work_array(phba, vports);
3338 }
3339
3340 /**
3341  * lpfc_sli4_async_fcoe_evt - Process the asynchronous fcoe event
3342  * @phba: pointer to lpfc hba data structure.
3343  * @acqe_link: pointer to the async fcoe completion queue entry.
3344  *
3345  * This routine is to handle the SLI4 asynchronous fcoe event.
3346  **/
3347 static void
3348 lpfc_sli4_async_fcoe_evt(struct lpfc_hba *phba,
3349                          struct lpfc_acqe_fcoe *acqe_fcoe)
3350 {
3351         uint8_t event_type = bf_get(lpfc_acqe_fcoe_event_type, acqe_fcoe);
3352         int rc;
3353         struct lpfc_vport *vport;
3354         struct lpfc_nodelist *ndlp;
3355         struct Scsi_Host  *shost;
3356         int active_vlink_present;
3357         struct lpfc_vport **vports;
3358         int i;
3359
3360         phba->fc_eventTag = acqe_fcoe->event_tag;
3361         phba->fcoe_eventtag = acqe_fcoe->event_tag;
3362         switch (event_type) {
3363         case LPFC_FCOE_EVENT_TYPE_NEW_FCF:
3364         case LPFC_FCOE_EVENT_TYPE_FCF_PARAM_MOD:
3365                 if (event_type == LPFC_FCOE_EVENT_TYPE_NEW_FCF)
3366                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3367                                         LOG_DISCOVERY,
3368                                         "2546 New FCF found event: "
3369                                         "evt_tag:x%x, fcf_index:x%x\n",
3370                                         acqe_fcoe->event_tag,
3371                                         acqe_fcoe->index);
3372                 else
3373                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
3374                                         LOG_DISCOVERY,
3375                                         "2788 FCF parameter modified event: "
3376                                         "evt_tag:x%x, fcf_index:x%x\n",
3377                                         acqe_fcoe->event_tag,
3378                                         acqe_fcoe->index);
3379                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3380                         /*
3381                          * During period of FCF discovery, read the FCF
3382                          * table record indexed by the event to update
3383                          * FCF round robin failover eligible FCF bmask.
3384                          */
3385                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3386                                         LOG_DISCOVERY,
3387                                         "2779 Read new FCF record with "
3388                                         "fcf_index:x%x for updating FCF "
3389                                         "round robin failover bmask\n",
3390                                         acqe_fcoe->index);
3391                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fcoe->index);
3392                 }
3393
3394                 /* If the FCF discovery is in progress, do nothing. */
3395                 spin_lock_irq(&phba->hbalock);
3396                 if (phba->hba_flag & FCF_DISC_INPROGRESS) {
3397                         spin_unlock_irq(&phba->hbalock);
3398                         break;
3399                 }
3400                 /* If fast FCF failover rescan event is pending, do nothing */
3401                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
3402                         spin_unlock_irq(&phba->hbalock);
3403                         break;
3404                 }
3405
3406                 /* If the FCF has been in discovered state, do nothing. */
3407                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
3408                         spin_unlock_irq(&phba->hbalock);
3409                         break;
3410                 }
3411                 spin_unlock_irq(&phba->hbalock);
3412
3413                 /* Otherwise, scan the entire FCF table and re-discover SAN */
3414                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3415                                 "2770 Start FCF table scan due to new FCF "
3416                                 "event: evt_tag:x%x, fcf_index:x%x\n",
3417                                 acqe_fcoe->event_tag, acqe_fcoe->index);
3418                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3419                                                      LPFC_FCOE_FCF_GET_FIRST);
3420                 if (rc)
3421                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3422                                         "2547 Issue FCF scan read FCF mailbox "
3423                                         "command failed 0x%x\n", rc);
3424                 break;
3425
3426         case LPFC_FCOE_EVENT_TYPE_FCF_TABLE_FULL:
3427                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3428                         "2548 FCF Table full count 0x%x tag 0x%x\n",
3429                         bf_get(lpfc_acqe_fcoe_fcf_count, acqe_fcoe),
3430                         acqe_fcoe->event_tag);
3431                 break;
3432
3433         case LPFC_FCOE_EVENT_TYPE_FCF_DEAD:
3434                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3435                         "2549 FCF disconnected from network index 0x%x"
3436                         " tag 0x%x\n", acqe_fcoe->index,
3437                         acqe_fcoe->event_tag);
3438                 /*
3439                  * If we are in the middle of FCF failover process, clear
3440                  * the corresponding FCF bit in the roundrobin bitmap.
3441                  */
3442                 spin_lock_irq(&phba->hbalock);
3443                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3444                         spin_unlock_irq(&phba->hbalock);
3445                         /* Update FLOGI FCF failover eligible FCF bmask */
3446                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fcoe->index);
3447                         break;
3448                 }
3449                 spin_unlock_irq(&phba->hbalock);
3450
3451                 /* If the event is not for currently used fcf do nothing */
3452                 if (phba->fcf.current_rec.fcf_indx != acqe_fcoe->index)
3453                         break;
3454
3455                 /*
3456                  * Otherwise, request the port to rediscover the entire FCF
3457                  * table for a fast recovery from case that the current FCF
3458                  * is no longer valid as we are not in the middle of FCF
3459                  * failover process already.
3460                  */
3461                 spin_lock_irq(&phba->hbalock);
3462                 /* Mark the fast failover process in progress */
3463                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
3464                 spin_unlock_irq(&phba->hbalock);
3465
3466                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3467                                 "2771 Start FCF fast failover process due to "
3468                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
3469                                 "\n", acqe_fcoe->event_tag, acqe_fcoe->index);
3470                 rc = lpfc_sli4_redisc_fcf_table(phba);
3471                 if (rc) {
3472                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3473                                         LOG_DISCOVERY,
3474                                         "2772 Issue FCF rediscover mabilbox "
3475                                         "command failed, fail through to FCF "
3476                                         "dead event\n");
3477                         spin_lock_irq(&phba->hbalock);
3478                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
3479                         spin_unlock_irq(&phba->hbalock);
3480                         /*
3481                          * Last resort will fail over by treating this
3482                          * as a link down to FCF registration.
3483                          */
3484                         lpfc_sli4_fcf_dead_failthrough(phba);
3485                 } else {
3486                         /* Reset FCF roundrobin bmask for new discovery */
3487                         memset(phba->fcf.fcf_rr_bmask, 0,
3488                                sizeof(*phba->fcf.fcf_rr_bmask));
3489                         /*
3490                          * Handling fast FCF failover to a DEAD FCF event is
3491                          * considered equalivant to receiving CVL to all vports.
3492                          */
3493                         lpfc_sli4_perform_all_vport_cvl(phba);
3494                 }
3495                 break;
3496         case LPFC_FCOE_EVENT_TYPE_CVL:
3497                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3498                         "2718 Clear Virtual Link Received for VPI 0x%x"
3499                         " tag 0x%x\n", acqe_fcoe->index, acqe_fcoe->event_tag);
3500                 vport = lpfc_find_vport_by_vpid(phba,
3501                                 acqe_fcoe->index - phba->vpi_base);
3502                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
3503                 if (!ndlp)
3504                         break;
3505                 active_vlink_present = 0;
3506
3507                 vports = lpfc_create_vport_work_array(phba);
3508                 if (vports) {
3509                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
3510                                         i++) {
3511                                 if ((!(vports[i]->fc_flag &
3512                                         FC_VPORT_CVL_RCVD)) &&
3513                                         (vports[i]->port_state > LPFC_FDISC)) {
3514                                         active_vlink_present = 1;
3515                                         break;
3516                                 }
3517                         }
3518                         lpfc_destroy_vport_work_array(phba, vports);
3519                 }
3520
3521                 if (active_vlink_present) {
3522                         /*
3523                          * If there are other active VLinks present,
3524                          * re-instantiate the Vlink using FDISC.
3525                          */
3526                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
3527                         shost = lpfc_shost_from_vport(vport);
3528                         spin_lock_irq(shost->host_lock);
3529                         ndlp->nlp_flag |= NLP_DELAY_TMO;
3530                         spin_unlock_irq(shost->host_lock);
3531                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
3532                         vport->port_state = LPFC_FDISC;
3533                 } else {
3534                         /*
3535                          * Otherwise, we request port to rediscover
3536                          * the entire FCF table for a fast recovery
3537                          * from possible case that the current FCF
3538                          * is no longer valid if we are not already
3539                          * in the FCF failover process.
3540                          */
3541                         spin_lock_irq(&phba->hbalock);
3542                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3543                                 spin_unlock_irq(&phba->hbalock);
3544                                 break;
3545                         }
3546                         /* Mark the fast failover process in progress */
3547                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
3548                         spin_unlock_irq(&phba->hbalock);
3549                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3550                                         LOG_DISCOVERY,
3551                                         "2773 Start FCF fast failover due "
3552                                         "to CVL event: evt_tag:x%x\n",
3553                                         acqe_fcoe->event_tag);
3554                         rc = lpfc_sli4_redisc_fcf_table(phba);
3555                         if (rc) {
3556                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3557                                                 LOG_DISCOVERY,
3558                                                 "2774 Issue FCF rediscover "
3559                                                 "mabilbox command failed, "
3560                                                 "through to CVL event\n");
3561                                 spin_lock_irq(&phba->hbalock);
3562                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
3563                                 spin_unlock_irq(&phba->hbalock);
3564                                 /*
3565                                  * Last resort will be re-try on the
3566                                  * the current registered FCF entry.
3567                                  */
3568                                 lpfc_retry_pport_discovery(phba);
3569                         } else
3570                                 /*
3571                                  * Reset FCF roundrobin bmask for new
3572                                  * discovery.
3573                                  */
3574                                 memset(phba->fcf.fcf_rr_bmask, 0,
3575                                        sizeof(*phba->fcf.fcf_rr_bmask));
3576                 }
3577                 break;
3578         default:
3579                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3580                         "0288 Unknown FCoE event type 0x%x event tag "
3581                         "0x%x\n", event_type, acqe_fcoe->event_tag);
3582                 break;
3583         }
3584 }
3585
3586 /**
3587  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
3588  * @phba: pointer to lpfc hba data structure.
3589  * @acqe_link: pointer to the async dcbx completion queue entry.
3590  *
3591  * This routine is to handle the SLI4 asynchronous dcbx event.
3592  **/
3593 static void
3594 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
3595                          struct lpfc_acqe_dcbx *acqe_dcbx)
3596 {
3597         phba->fc_eventTag = acqe_dcbx->event_tag;
3598         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3599                         "0290 The SLI4 DCBX asynchronous event is not "
3600                         "handled yet\n");
3601 }
3602
3603 /**
3604  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
3605  * @phba: pointer to lpfc hba data structure.
3606  * @acqe_link: pointer to the async grp5 completion queue entry.
3607  *
3608  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
3609  * is an asynchronous notified of a logical link speed change.  The Port
3610  * reports the logical link speed in units of 10Mbps.
3611  **/
3612 static void
3613 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
3614                          struct lpfc_acqe_grp5 *acqe_grp5)
3615 {
3616         uint16_t prev_ll_spd;
3617
3618         phba->fc_eventTag = acqe_grp5->event_tag;
3619         phba->fcoe_eventtag = acqe_grp5->event_tag;
3620         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
3621         phba->sli4_hba.link_state.logical_speed =
3622                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5));
3623         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3624                         "2789 GRP5 Async Event: Updating logical link speed "
3625                         "from %dMbps to %dMbps\n", (prev_ll_spd * 10),
3626                         (phba->sli4_hba.link_state.logical_speed*10));
3627 }
3628
3629 /**
3630  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
3631  * @phba: pointer to lpfc hba data structure.
3632  *
3633  * This routine is invoked by the worker thread to process all the pending
3634  * SLI4 asynchronous events.
3635  **/
3636 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
3637 {
3638         struct lpfc_cq_event *cq_event;
3639
3640         /* First, declare the async event has been handled */
3641         spin_lock_irq(&phba->hbalock);
3642         phba->hba_flag &= ~ASYNC_EVENT;
3643         spin_unlock_irq(&phba->hbalock);
3644         /* Now, handle all the async events */
3645         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
3646                 /* Get the first event from the head of the event queue */
3647                 spin_lock_irq(&phba->hbalock);
3648                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
3649                                  cq_event, struct lpfc_cq_event, list);
3650                 spin_unlock_irq(&phba->hbalock);
3651                 /* Process the asynchronous event */
3652                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
3653                 case LPFC_TRAILER_CODE_LINK:
3654                         lpfc_sli4_async_link_evt(phba,
3655                                                  &cq_event->cqe.acqe_link);
3656                         break;
3657                 case LPFC_TRAILER_CODE_FCOE:
3658                         lpfc_sli4_async_fcoe_evt(phba,
3659                                                  &cq_event->cqe.acqe_fcoe);
3660                         break;
3661                 case LPFC_TRAILER_CODE_DCBX:
3662                         lpfc_sli4_async_dcbx_evt(phba,
3663                                                  &cq_event->cqe.acqe_dcbx);
3664                         break;
3665                 case LPFC_TRAILER_CODE_GRP5:
3666                         lpfc_sli4_async_grp5_evt(phba,
3667                                                  &cq_event->cqe.acqe_grp5);
3668                         break;
3669                 default:
3670                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3671                                         "1804 Invalid asynchrous event code: "
3672                                         "x%x\n", bf_get(lpfc_trailer_code,
3673                                         &cq_event->cqe.mcqe_cmpl));
3674                         break;
3675                 }
3676                 /* Free the completion event processed to the free pool */
3677                 lpfc_sli4_cq_event_release(phba, cq_event);
3678         }
3679 }
3680
3681 /**
3682  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
3683  * @phba: pointer to lpfc hba data structure.
3684  *
3685  * This routine is invoked by the worker thread to process FCF table
3686  * rediscovery pending completion event.
3687  **/
3688 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
3689 {
3690         int rc;
3691
3692         spin_lock_irq(&phba->hbalock);
3693         /* Clear FCF rediscovery timeout event */
3694         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
3695         /* Clear driver fast failover FCF record flag */
3696         phba->fcf.failover_rec.flag = 0;
3697         /* Set state for FCF fast failover */
3698         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
3699         spin_unlock_irq(&phba->hbalock);
3700
3701         /* Scan FCF table from the first entry to re-discover SAN */
3702         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3703                         "2777 Start FCF table scan after FCF "
3704                         "rediscovery quiescent period over\n");
3705         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
3706         if (rc)
3707                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3708                                 "2747 Issue FCF scan read FCF mailbox "
3709                                 "command failed 0x%x\n", rc);
3710 }
3711
3712 /**
3713  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
3714  * @phba: pointer to lpfc hba data structure.
3715  * @dev_grp: The HBA PCI-Device group number.
3716  *
3717  * This routine is invoked to set up the per HBA PCI-Device group function
3718  * API jump table entries.
3719  *
3720  * Return: 0 if success, otherwise -ENODEV
3721  **/
3722 int
3723 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
3724 {
3725         int rc;
3726
3727         /* Set up lpfc PCI-device group */
3728         phba->pci_dev_grp = dev_grp;
3729
3730         /* The LPFC_PCI_DEV_OC uses SLI4 */
3731         if (dev_grp == LPFC_PCI_DEV_OC)
3732                 phba->sli_rev = LPFC_SLI_REV4;
3733
3734         /* Set up device INIT API function jump table */
3735         rc = lpfc_init_api_table_setup(phba, dev_grp);
3736         if (rc)
3737                 return -ENODEV;
3738         /* Set up SCSI API function jump table */
3739         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
3740         if (rc)
3741                 return -ENODEV;
3742         /* Set up SLI API function jump table */
3743         rc = lpfc_sli_api_table_setup(phba, dev_grp);
3744         if (rc)
3745                 return -ENODEV;
3746         /* Set up MBOX API function jump table */
3747         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
3748         if (rc)
3749                 return -ENODEV;
3750
3751         return 0;
3752 }
3753
3754 /**
3755  * lpfc_log_intr_mode - Log the active interrupt mode
3756  * @phba: pointer to lpfc hba data structure.
3757  * @intr_mode: active interrupt mode adopted.
3758  *
3759  * This routine it invoked to log the currently used active interrupt mode
3760  * to the device.
3761  **/
3762 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
3763 {
3764         switch (intr_mode) {
3765         case 0:
3766                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3767                                 "0470 Enable INTx interrupt mode.\n");
3768                 break;
3769         case 1:
3770                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3771                                 "0481 Enabled MSI interrupt mode.\n");
3772                 break;
3773         case 2:
3774                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3775                                 "0480 Enabled MSI-X interrupt mode.\n");
3776                 break;
3777         default:
3778                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3779                                 "0482 Illegal interrupt mode.\n");
3780                 break;
3781         }
3782         return;
3783 }
3784
3785 /**
3786  * lpfc_enable_pci_dev - Enable a generic PCI device.
3787  * @phba: pointer to lpfc hba data structure.
3788  *
3789  * This routine is invoked to enable the PCI device that is common to all
3790  * PCI devices.
3791  *
3792  * Return codes
3793  *      0 - successful
3794  *      other values - error
3795  **/
3796 static int
3797 lpfc_enable_pci_dev(struct lpfc_hba *phba)
3798 {
3799         struct pci_dev *pdev;
3800         int bars;
3801
3802         /* Obtain PCI device reference */
3803         if (!phba->pcidev)
3804                 goto out_error;
3805         else
3806                 pdev = phba->pcidev;
3807         /* Select PCI BARs */
3808         bars = pci_select_bars(pdev, IORESOURCE_MEM);
3809         /* Enable PCI device */
3810         if (pci_enable_device_mem(pdev))
3811                 goto out_error;
3812         /* Request PCI resource for the device */
3813         if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
3814                 goto out_disable_device;
3815         /* Set up device as PCI master and save state for EEH */
3816         pci_set_master(pdev);
3817         pci_try_set_mwi(pdev);
3818         pci_save_state(pdev);
3819
3820         return 0;
3821
3822 out_disable_device:
3823         pci_disable_device(pdev);
3824 out_error:
3825         return -ENODEV;
3826 }
3827
3828 /**
3829  * lpfc_disable_pci_dev - Disable a generic PCI device.
3830  * @phba: pointer to lpfc hba data structure.
3831  *
3832  * This routine is invoked to disable the PCI device that is common to all
3833  * PCI devices.
3834  **/
3835 static void
3836 lpfc_disable_pci_dev(struct lpfc_hba *phba)
3837 {
3838         struct pci_dev *pdev;
3839         int bars;
3840
3841         /* Obtain PCI device reference */
3842         if (!phba->pcidev)
3843                 return;
3844         else
3845                 pdev = phba->pcidev;
3846         /* Select PCI BARs */
3847         bars = pci_select_bars(pdev, IORESOURCE_MEM);
3848         /* Release PCI resource and disable PCI device */
3849         pci_release_selected_regions(pdev, bars);
3850         pci_disable_device(pdev);
3851         /* Null out PCI private reference to driver */
3852         pci_set_drvdata(pdev, NULL);
3853
3854         return;
3855 }
3856
3857 /**
3858  * lpfc_reset_hba - Reset a hba
3859  * @phba: pointer to lpfc hba data structure.
3860  *
3861  * This routine is invoked to reset a hba device. It brings the HBA
3862  * offline, performs a board restart, and then brings the board back
3863  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
3864  * on outstanding mailbox commands.
3865  **/
3866 void
3867 lpfc_reset_hba(struct lpfc_hba *phba)
3868 {
3869         /* If resets are disabled then set error state and return. */
3870         if (!phba->cfg_enable_hba_reset) {
3871                 phba->link_state = LPFC_HBA_ERROR;
3872                 return;
3873         }
3874         lpfc_offline_prep(phba);
3875         lpfc_offline(phba);
3876         lpfc_sli_brdrestart(phba);
3877         lpfc_online(phba);
3878         lpfc_unblock_mgmt_io(phba);
3879 }
3880
3881 /**
3882  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
3883  * @phba: pointer to lpfc hba data structure.
3884  *
3885  * This routine is invoked to set up the driver internal resources specific to
3886  * support the SLI-3 HBA device it attached to.
3887  *
3888  * Return codes
3889  *      0 - successful
3890  *      other values - error
3891  **/
3892 static int
3893 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
3894 {
3895         struct lpfc_sli *psli;
3896
3897         /*
3898          * Initialize timers used by driver
3899          */
3900
3901         /* Heartbeat timer */
3902         init_timer(&phba->hb_tmofunc);
3903         phba->hb_tmofunc.function = lpfc_hb_timeout;
3904         phba->hb_tmofunc.data = (unsigned long)phba;
3905
3906         psli = &phba->sli;
3907         /* MBOX heartbeat timer */
3908         init_timer(&psli->mbox_tmo);
3909         psli->mbox_tmo.function = lpfc_mbox_timeout;
3910         psli->mbox_tmo.data = (unsigned long) phba;
3911         /* FCP polling mode timer */
3912         init_timer(&phba->fcp_poll_timer);
3913         phba->fcp_poll_timer.function = lpfc_poll_timeout;
3914         phba->fcp_poll_timer.data = (unsigned long) phba;
3915         /* Fabric block timer */
3916         init_timer(&phba->fabric_block_timer);
3917         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
3918         phba->fabric_block_timer.data = (unsigned long) phba;
3919         /* EA polling mode timer */
3920         init_timer(&phba->eratt_poll);
3921         phba->eratt_poll.function = lpfc_poll_eratt;
3922         phba->eratt_poll.data = (unsigned long) phba;
3923
3924         /* Host attention work mask setup */
3925         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
3926         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
3927
3928         /* Get all the module params for configuring this host */
3929         lpfc_get_cfgparam(phba);
3930         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
3931                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
3932                 /* check for menlo minimum sg count */
3933                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
3934                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
3935         }
3936
3937         /*
3938          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
3939          * used to create the sg_dma_buf_pool must be dynamically calculated.
3940          * 2 segments are added since the IOCB needs a command and response bde.
3941          */
3942         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
3943                 sizeof(struct fcp_rsp) +
3944                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
3945
3946         if (phba->cfg_enable_bg) {
3947                 phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
3948                 phba->cfg_sg_dma_buf_size +=
3949                         phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
3950         }
3951
3952         /* Also reinitialize the host templates with new values. */
3953         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
3954         lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
3955
3956         phba->max_vpi = LPFC_MAX_VPI;
3957         /* This will be set to correct value after config_port mbox */
3958         phba->max_vports = 0;
3959
3960         /*
3961          * Initialize the SLI Layer to run with lpfc HBAs.
3962          */
3963         lpfc_sli_setup(phba);
3964         lpfc_sli_queue_setup(phba);
3965
3966         /* Allocate device driver memory */
3967         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
3968                 return -ENOMEM;
3969
3970         return 0;
3971 }
3972
3973 /**
3974  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
3975  * @phba: pointer to lpfc hba data structure.
3976  *
3977  * This routine is invoked to unset the driver internal resources set up
3978  * specific for supporting the SLI-3 HBA device it attached to.
3979  **/
3980 static void
3981 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
3982 {
3983         /* Free device driver memory allocated */
3984         lpfc_mem_free_all(phba);
3985
3986         return;
3987 }
3988
3989 /**
3990  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
3991  * @phba: pointer to lpfc hba data structure.
3992  *
3993  * This routine is invoked to set up the driver internal resources specific to
3994  * support the SLI-4 HBA device it attached to.
3995  *
3996  * Return codes
3997  *      0 - successful
3998  *      other values - error
3999  **/
4000 static int
4001 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
4002 {
4003         struct lpfc_sli *psli;
4004         LPFC_MBOXQ_t *mboxq;
4005         int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
4006         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
4007         struct lpfc_mqe *mqe;
4008         int longs;
4009
4010         /* Before proceed, wait for POST done and device ready */
4011         rc = lpfc_sli4_post_status_check(phba);
4012         if (rc)
4013                 return -ENODEV;
4014
4015         /*
4016          * Initialize timers used by driver
4017          */
4018
4019         /* Heartbeat timer */
4020         init_timer(&phba->hb_tmofunc);
4021         phba->hb_tmofunc.function = lpfc_hb_timeout;
4022         phba->hb_tmofunc.data = (unsigned long)phba;
4023
4024         psli = &phba->sli;
4025         /* MBOX heartbeat timer */
4026         init_timer(&psli->mbox_tmo);
4027         psli->mbox_tmo.function = lpfc_mbox_timeout;
4028         psli->mbox_tmo.data = (unsigned long) phba;
4029         /* Fabric block timer */
4030         init_timer(&phba->fabric_block_timer);
4031         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4032         phba->fabric_block_timer.data = (unsigned long) phba;
4033         /* EA polling mode timer */
4034         init_timer(&phba->eratt_poll);
4035         phba->eratt_poll.function = lpfc_poll_eratt;
4036         phba->eratt_poll.data = (unsigned long) phba;
4037         /* FCF rediscover timer */
4038         init_timer(&phba->fcf.redisc_wait);
4039         phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
4040         phba->fcf.redisc_wait.data = (unsigned long)phba;
4041
4042         /*
4043          * We need to do a READ_CONFIG mailbox command here before
4044          * calling lpfc_get_cfgparam. For VFs this will report the
4045          * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings.
4046          * All of the resources allocated
4047          * for this Port are tied to these values.
4048          */
4049         /* Get all the module params for configuring this host */
4050         lpfc_get_cfgparam(phba);
4051         phba->max_vpi = LPFC_MAX_VPI;
4052         /* This will be set to correct value after the read_config mbox */
4053         phba->max_vports = 0;
4054
4055         /* Program the default value of vlan_id and fc_map */
4056         phba->valid_vlan = 0;
4057         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4058         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4059         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4060
4061         /*
4062          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4063          * used to create the sg_dma_buf_pool must be dynamically calculated.
4064          * 2 segments are added since the IOCB needs a command and response bde.
4065          * To insure that the scsi sgl does not cross a 4k page boundary only
4066          * sgl sizes of must be a power of 2.
4067          */
4068         buf_size = (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) +
4069                     ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct sli4_sge)));
4070         /* Feature Level 1 hardware is limited to 2 pages */
4071         if ((bf_get(lpfc_sli_intf_featurelevel1, &phba->sli4_hba.sli_intf) ==
4072              LPFC_SLI_INTF_FEATURELEVEL1_1))
4073                 max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
4074         else
4075                 max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
4076         for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
4077              dma_buf_size < max_buf_size && buf_size > dma_buf_size;
4078              dma_buf_size = dma_buf_size << 1)
4079                 ;
4080         if (dma_buf_size == max_buf_size)
4081                 phba->cfg_sg_seg_cnt = (dma_buf_size -
4082                         sizeof(struct fcp_cmnd) - sizeof(struct fcp_rsp) -
4083                         (2 * sizeof(struct sli4_sge))) /
4084                                 sizeof(struct sli4_sge);
4085         phba->cfg_sg_dma_buf_size = dma_buf_size;
4086
4087         /* Initialize buffer queue management fields */
4088         hbq_count = lpfc_sli_hbq_count();
4089         for (i = 0; i < hbq_count; ++i)
4090                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
4091         INIT_LIST_HEAD(&phba->rb_pend_list);
4092         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
4093         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
4094
4095         /*
4096          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
4097          */
4098         /* Initialize the Abort scsi buffer list used by driver */
4099         spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
4100         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
4101         /* This abort list used by worker thread */
4102         spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
4103
4104         /*
4105          * Initialize dirver internal slow-path work queues
4106          */
4107
4108         /* Driver internel slow-path CQ Event pool */
4109         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
4110         /* Response IOCB work queue list */
4111         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
4112         /* Asynchronous event CQ Event work queue list */
4113         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
4114         /* Fast-path XRI aborted CQ Event work queue list */
4115         INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
4116         /* Slow-path XRI aborted CQ Event work queue list */
4117         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
4118         /* Receive queue CQ Event work queue list */
4119         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
4120
4121         /* Initialize the driver internal SLI layer lists. */
4122         lpfc_sli_setup(phba);
4123         lpfc_sli_queue_setup(phba);
4124
4125         /* Allocate device driver memory */
4126         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
4127         if (rc)
4128                 return -ENOMEM;
4129
4130         /* Create the bootstrap mailbox command */
4131         rc = lpfc_create_bootstrap_mbox(phba);
4132         if (unlikely(rc))
4133                 goto out_free_mem;
4134
4135         /* Set up the host's endian order with the device. */
4136         rc = lpfc_setup_endian_order(phba);
4137         if (unlikely(rc))
4138                 goto out_free_bsmbx;
4139
4140         rc = lpfc_sli4_fw_cfg_check(phba);
4141         if (unlikely(rc))
4142                 goto out_free_bsmbx;
4143
4144         /* Set up the hba's configuration parameters. */
4145         rc = lpfc_sli4_read_config(phba);
4146         if (unlikely(rc))
4147                 goto out_free_bsmbx;
4148
4149         /* Perform a function reset */
4150         rc = lpfc_pci_function_reset(phba);
4151         if (unlikely(rc))
4152                 goto out_free_bsmbx;
4153
4154         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4155                                                        GFP_KERNEL);
4156         if (!mboxq) {
4157                 rc = -ENOMEM;
4158                 goto out_free_bsmbx;
4159         }
4160
4161         /* Get the Supported Pages. It is always available. */
4162         lpfc_supported_pages(mboxq);
4163         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4164         if (unlikely(rc)) {
4165                 rc = -EIO;
4166                 mempool_free(mboxq, phba->mbox_mem_pool);
4167                 goto out_free_bsmbx;
4168         }
4169
4170         mqe = &mboxq->u.mqe;
4171         memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
4172                LPFC_MAX_SUPPORTED_PAGES);
4173         for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
4174                 switch (pn_page[i]) {
4175                 case LPFC_SLI4_PARAMETERS:
4176                         phba->sli4_hba.pc_sli4_params.supported = 1;
4177                         break;
4178                 default:
4179                         break;
4180                 }
4181         }
4182
4183         /* Read the port's SLI4 Parameters capabilities if supported. */
4184         if (phba->sli4_hba.pc_sli4_params.supported)
4185                 rc = lpfc_pc_sli4_params_get(phba, mboxq);
4186         mempool_free(mboxq, phba->mbox_mem_pool);
4187         if (rc) {
4188                 rc = -EIO;
4189                 goto out_free_bsmbx;
4190         }
4191         /* Create all the SLI4 queues */
4192         rc = lpfc_sli4_queue_create(phba);
4193         if (rc)
4194                 goto out_free_bsmbx;
4195
4196         /* Create driver internal CQE event pool */
4197         rc = lpfc_sli4_cq_event_pool_create(phba);
4198         if (rc)
4199                 goto out_destroy_queue;
4200
4201         /* Initialize and populate the iocb list per host */
4202         rc = lpfc_init_sgl_list(phba);
4203         if (rc) {
4204                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4205                                 "1400 Failed to initialize sgl list.\n");
4206                 goto out_destroy_cq_event_pool;
4207         }
4208         rc = lpfc_init_active_sgl_array(phba);
4209         if (rc) {
4210                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4211                                 "1430 Failed to initialize sgl list.\n");
4212                 goto out_free_sgl_list;
4213         }
4214
4215         rc = lpfc_sli4_init_rpi_hdrs(phba);
4216         if (rc) {
4217                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4218                                 "1432 Failed to initialize rpi headers.\n");
4219                 goto out_free_active_sgl;
4220         }
4221
4222         /* Allocate eligible FCF bmask memory for FCF round robin failover */
4223         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
4224         phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
4225                                          GFP_KERNEL);
4226         if (!phba->fcf.fcf_rr_bmask) {
4227                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4228                                 "2759 Failed allocate memory for FCF round "
4229                                 "robin failover bmask\n");
4230                 goto out_remove_rpi_hdrs;
4231         }
4232
4233         phba->sli4_hba.fcp_eq_hdl = kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
4234                                     phba->cfg_fcp_eq_count), GFP_KERNEL);
4235         if (!phba->sli4_hba.fcp_eq_hdl) {
4236                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4237                                 "2572 Failed allocate memory for fast-path "
4238                                 "per-EQ handle array\n");
4239                 goto out_free_fcf_rr_bmask;
4240         }
4241
4242         phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
4243                                       phba->sli4_hba.cfg_eqn), GFP_KERNEL);
4244         if (!phba->sli4_hba.msix_entries) {
4245                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4246                                 "2573 Failed allocate memory for msi-x "
4247                                 "interrupt vector entries\n");
4248                 goto out_free_fcp_eq_hdl;
4249         }
4250
4251         return rc;
4252
4253 out_free_fcp_eq_hdl:
4254         kfree(phba->sli4_hba.fcp_eq_hdl);
4255 out_free_fcf_rr_bmask:
4256         kfree(phba->fcf.fcf_rr_bmask);
4257 out_remove_rpi_hdrs:
4258         lpfc_sli4_remove_rpi_hdrs(phba);
4259 out_free_active_sgl:
4260         lpfc_free_active_sgl(phba);
4261 out_free_sgl_list:
4262         lpfc_free_sgl_list(phba);
4263 out_destroy_cq_event_pool:
4264         lpfc_sli4_cq_event_pool_destroy(phba);
4265 out_destroy_queue:
4266         lpfc_sli4_queue_destroy(phba);
4267 out_free_bsmbx:
4268         lpfc_destroy_bootstrap_mbox(phba);
4269 out_free_mem:
4270         lpfc_mem_free(phba);
4271         return rc;
4272 }
4273
4274 /**
4275  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
4276  * @phba: pointer to lpfc hba data structure.
4277  *
4278  * This routine is invoked to unset the driver internal resources set up
4279  * specific for supporting the SLI-4 HBA device it attached to.
4280  **/
4281 static void
4282 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
4283 {
4284         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4285
4286         /* unregister default FCFI from the HBA */
4287         lpfc_sli4_fcfi_unreg(phba, phba->fcf.fcfi);
4288
4289         /* Free the default FCR table */
4290         lpfc_sli_remove_dflt_fcf(phba);
4291
4292         /* Free memory allocated for msi-x interrupt vector entries */
4293         kfree(phba->sli4_hba.msix_entries);
4294
4295         /* Free memory allocated for fast-path work queue handles */
4296         kfree(phba->sli4_hba.fcp_eq_hdl);
4297
4298         /* Free the allocated rpi headers. */
4299         lpfc_sli4_remove_rpi_hdrs(phba);
4300         lpfc_sli4_remove_rpis(phba);
4301
4302         /* Free eligible FCF index bmask */
4303         kfree(phba->fcf.fcf_rr_bmask);
4304
4305         /* Free the ELS sgl list */
4306         lpfc_free_active_sgl(phba);
4307         lpfc_free_sgl_list(phba);
4308
4309         /* Free the SCSI sgl management array */
4310         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4311
4312         /* Free the SLI4 queues */
4313         lpfc_sli4_queue_destroy(phba);
4314
4315         /* Free the completion queue EQ event pool */
4316         lpfc_sli4_cq_event_release_all(phba);
4317         lpfc_sli4_cq_event_pool_destroy(phba);
4318
4319         /* Reset SLI4 HBA FCoE function */
4320         lpfc_pci_function_reset(phba);
4321
4322         /* Free the bsmbx region. */
4323         lpfc_destroy_bootstrap_mbox(phba);
4324
4325         /* Free the SLI Layer memory with SLI4 HBAs */
4326         lpfc_mem_free_all(phba);
4327
4328         /* Free the current connect table */
4329         list_for_each_entry_safe(conn_entry, next_conn_entry,
4330                 &phba->fcf_conn_rec_list, list) {
4331                 list_del_init(&conn_entry->list);
4332                 kfree(conn_entry);
4333         }
4334
4335         return;
4336 }
4337
4338 /**
4339  * lpfc_init_api_table_setup - Set up init api fucntion jump table
4340  * @phba: The hba struct for which this call is being executed.
4341  * @dev_grp: The HBA PCI-Device group number.
4342  *
4343  * This routine sets up the device INIT interface API function jump table
4344  * in @phba struct.
4345  *
4346  * Returns: 0 - success, -ENODEV - failure.
4347  **/
4348 int
4349 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4350 {
4351         phba->lpfc_hba_init_link = lpfc_hba_init_link;
4352         phba->lpfc_hba_down_link = lpfc_hba_down_link;
4353         switch (dev_grp) {
4354         case LPFC_PCI_DEV_LP:
4355                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
4356                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
4357                 phba->lpfc_stop_port = lpfc_stop_port_s3;
4358                 break;
4359         case LPFC_PCI_DEV_OC:
4360                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
4361                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
4362                 phba->lpfc_stop_port = lpfc_stop_port_s4;
4363                 break;
4364         default:
4365                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4366                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
4367                                 dev_grp);
4368                 return -ENODEV;
4369                 break;
4370         }
4371         return 0;
4372 }
4373
4374 /**
4375  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
4376  * @phba: pointer to lpfc hba data structure.
4377  *
4378  * This routine is invoked to set up the driver internal resources before the
4379  * device specific resource setup to support the HBA device it attached to.
4380  *
4381  * Return codes
4382  *      0 - successful
4383  *      other values - error
4384  **/
4385 static int
4386 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
4387 {
4388         /*
4389          * Driver resources common to all SLI revisions
4390          */
4391         atomic_set(&phba->fast_event_count, 0);
4392         spin_lock_init(&phba->hbalock);
4393
4394         /* Initialize ndlp management spinlock */
4395         spin_lock_init(&phba->ndlp_lock);
4396
4397         INIT_LIST_HEAD(&phba->port_list);
4398         INIT_LIST_HEAD(&phba->work_list);
4399         init_waitqueue_head(&phba->wait_4_mlo_m_q);
4400
4401         /* Initialize the wait queue head for the kernel thread */
4402         init_waitqueue_head(&phba->work_waitq);
4403
4404         /* Initialize the scsi buffer list used by driver for scsi IO */
4405         spin_lock_init(&phba->scsi_buf_list_lock);
4406         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
4407
4408         /* Initialize the fabric iocb list */
4409         INIT_LIST_HEAD(&phba->fabric_iocb_list);
4410
4411         /* Initialize list to save ELS buffers */
4412         INIT_LIST_HEAD(&phba->elsbuf);
4413
4414         /* Initialize FCF connection rec list */
4415         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
4416
4417         return 0;
4418 }
4419
4420 /**
4421  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
4422  * @phba: pointer to lpfc hba data structure.
4423  *
4424  * This routine is invoked to set up the driver internal resources after the
4425  * device specific resource setup to support the HBA device it attached to.
4426  *
4427  * Return codes
4428  *      0 - successful
4429  *      other values - error
4430  **/
4431 static int
4432 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
4433 {
4434         int error;
4435
4436         /* Startup the kernel thread for this host adapter. */
4437         phba->worker_thread = kthread_run(lpfc_do_work, phba,
4438                                           "lpfc_worker_%d", phba->brd_no);
4439         if (IS_ERR(phba->worker_thread)) {
4440                 error = PTR_ERR(phba->worker_thread);
4441                 return error;
4442         }
4443
4444         return 0;
4445 }
4446
4447 /**
4448  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
4449  * @phba: pointer to lpfc hba data structure.
4450  *
4451  * This routine is invoked to unset the driver internal resources set up after
4452  * the device specific resource setup for supporting the HBA device it
4453  * attached to.
4454  **/
4455 static void
4456 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
4457 {
4458         /* Stop kernel worker thread */
4459         kthread_stop(phba->worker_thread);
4460 }
4461
4462 /**
4463  * lpfc_free_iocb_list - Free iocb list.
4464  * @phba: pointer to lpfc hba data structure.
4465  *
4466  * This routine is invoked to free the driver's IOCB list and memory.
4467  **/
4468 static void
4469 lpfc_free_iocb_list(struct lpfc_hba *phba)
4470 {
4471         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
4472
4473         spin_lock_irq(&phba->hbalock);
4474         list_for_each_entry_safe(iocbq_entry, iocbq_next,
4475                                  &phba->lpfc_iocb_list, list) {
4476                 list_del(&iocbq_entry->list);
4477                 kfree(iocbq_entry);
4478                 phba->total_iocbq_bufs--;
4479         }
4480         spin_unlock_irq(&phba->hbalock);
4481
4482         return;
4483 }
4484
4485 /**
4486  * lpfc_init_iocb_list - Allocate and initialize iocb list.
4487  * @phba: pointer to lpfc hba data structure.
4488  *
4489  * This routine is invoked to allocate and initizlize the driver's IOCB
4490  * list and set up the IOCB tag array accordingly.
4491  *
4492  * Return codes
4493  *      0 - successful
4494  *      other values - error
4495  **/
4496 static int
4497 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
4498 {
4499         struct lpfc_iocbq *iocbq_entry = NULL;
4500         uint16_t iotag;
4501         int i;
4502
4503         /* Initialize and populate the iocb list per host.  */
4504         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
4505         for (i = 0; i < iocb_count; i++) {
4506                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
4507                 if (iocbq_entry == NULL) {
4508                         printk(KERN_ERR "%s: only allocated %d iocbs of "
4509                                 "expected %d count. Unloading driver.\n",
4510                                 __func__, i, LPFC_IOCB_LIST_CNT);
4511                         goto out_free_iocbq;
4512                 }
4513
4514                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
4515                 if (iotag == 0) {
4516                         kfree(iocbq_entry);
4517                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
4518                                 "Unloading driver.\n", __func__);
4519                         goto out_free_iocbq;
4520                 }
4521                 iocbq_entry->sli4_xritag = NO_XRI;
4522
4523                 spin_lock_irq(&phba->hbalock);
4524                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
4525                 phba->total_iocbq_bufs++;
4526                 spin_unlock_irq(&phba->hbalock);
4527         }
4528
4529         return 0;
4530
4531 out_free_iocbq:
4532         lpfc_free_iocb_list(phba);
4533
4534         return -ENOMEM;
4535 }
4536
4537 /**
4538  * lpfc_free_sgl_list - Free sgl list.
4539  * @phba: pointer to lpfc hba data structure.
4540  *
4541  * This routine is invoked to free the driver's sgl list and memory.
4542  **/
4543 static void
4544 lpfc_free_sgl_list(struct lpfc_hba *phba)
4545 {
4546         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
4547         LIST_HEAD(sglq_list);
4548         int rc = 0;
4549
4550         spin_lock_irq(&phba->hbalock);
4551         list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
4552         spin_unlock_irq(&phba->hbalock);
4553
4554         list_for_each_entry_safe(sglq_entry, sglq_next,
4555                                  &sglq_list, list) {
4556                 list_del(&sglq_entry->list);
4557                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
4558                 kfree(sglq_entry);
4559                 phba->sli4_hba.total_sglq_bufs--;
4560         }
4561         rc = lpfc_sli4_remove_all_sgl_pages(phba);
4562         if (rc) {
4563                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4564                         "2005 Unable to deregister pages from HBA: %x\n", rc);
4565         }
4566         kfree(phba->sli4_hba.lpfc_els_sgl_array);
4567 }
4568
4569 /**
4570  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
4571  * @phba: pointer to lpfc hba data structure.
4572  *
4573  * This routine is invoked to allocate the driver's active sgl memory.
4574  * This array will hold the sglq_entry's for active IOs.
4575  **/
4576 static int
4577 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
4578 {
4579         int size;
4580         size = sizeof(struct lpfc_sglq *);
4581         size *= phba->sli4_hba.max_cfg_param.max_xri;
4582
4583         phba->sli4_hba.lpfc_sglq_active_list =
4584                 kzalloc(size, GFP_KERNEL);
4585         if (!phba->sli4_hba.lpfc_sglq_active_list)
4586                 return -ENOMEM;
4587         return 0;
4588 }
4589
4590 /**
4591  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
4592  * @phba: pointer to lpfc hba data structure.
4593  *
4594  * This routine is invoked to walk through the array of active sglq entries
4595  * and free all of the resources.
4596  * This is just a place holder for now.
4597  **/
4598 static void
4599 lpfc_free_active_sgl(struct lpfc_hba *phba)
4600 {
4601         kfree(phba->sli4_hba.lpfc_sglq_active_list);
4602 }
4603
4604 /**
4605  * lpfc_init_sgl_list - Allocate and initialize sgl list.
4606  * @phba: pointer to lpfc hba data structure.
4607  *
4608  * This routine is invoked to allocate and initizlize the driver's sgl
4609  * list and set up the sgl xritag tag array accordingly.
4610  *
4611  * Return codes
4612  *      0 - successful
4613  *      other values - error
4614  **/
4615 static int
4616 lpfc_init_sgl_list(struct lpfc_hba *phba)
4617 {
4618         struct lpfc_sglq *sglq_entry = NULL;
4619         int i;
4620         int els_xri_cnt;
4621
4622         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4623         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4624                                 "2400 lpfc_init_sgl_list els %d.\n",
4625                                 els_xri_cnt);
4626         /* Initialize and populate the sglq list per host/VF. */
4627         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
4628         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
4629
4630         /* Sanity check on XRI management */
4631         if (phba->sli4_hba.max_cfg_param.max_xri <= els_xri_cnt) {
4632                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4633                                 "2562 No room left for SCSI XRI allocation: "
4634                                 "max_xri=%d, els_xri=%d\n",
4635                                 phba->sli4_hba.max_cfg_param.max_xri,
4636                                 els_xri_cnt);
4637                 return -ENOMEM;
4638         }
4639
4640         /* Allocate memory for the ELS XRI management array */
4641         phba->sli4_hba.lpfc_els_sgl_array =
4642                         kzalloc((sizeof(struct lpfc_sglq *) * els_xri_cnt),
4643                         GFP_KERNEL);
4644
4645         if (!phba->sli4_hba.lpfc_els_sgl_array) {
4646                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4647                                 "2401 Failed to allocate memory for ELS "
4648                                 "XRI management array of size %d.\n",
4649                                 els_xri_cnt);
4650                 return -ENOMEM;
4651         }
4652
4653         /* Keep the SCSI XRI into the XRI management array */
4654         phba->sli4_hba.scsi_xri_max =
4655                         phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4656         phba->sli4_hba.scsi_xri_cnt = 0;
4657
4658         phba->sli4_hba.lpfc_scsi_psb_array =
4659                         kzalloc((sizeof(struct lpfc_scsi_buf *) *
4660                         phba->sli4_hba.scsi_xri_max), GFP_KERNEL);
4661
4662         if (!phba->sli4_hba.lpfc_scsi_psb_array) {
4663                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4664                                 "2563 Failed to allocate memory for SCSI "
4665                                 "XRI management array of size %d.\n",
4666                                 phba->sli4_hba.scsi_xri_max);
4667                 kfree(phba->sli4_hba.lpfc_els_sgl_array);
4668                 return -ENOMEM;
4669         }
4670
4671         for (i = 0; i < els_xri_cnt; i++) {
4672                 sglq_entry = kzalloc(sizeof(struct lpfc_sglq), GFP_KERNEL);
4673                 if (sglq_entry == NULL) {
4674                         printk(KERN_ERR "%s: only allocated %d sgls of "
4675                                 "expected %d count. Unloading driver.\n",
4676                                 __func__, i, els_xri_cnt);
4677                         goto out_free_mem;
4678                 }
4679
4680                 sglq_entry->sli4_xritag = lpfc_sli4_next_xritag(phba);
4681                 if (sglq_entry->sli4_xritag == NO_XRI) {
4682                         kfree(sglq_entry);
4683                         printk(KERN_ERR "%s: failed to allocate XRI.\n"
4684                                 "Unloading driver.\n", __func__);
4685                         goto out_free_mem;
4686                 }
4687                 sglq_entry->buff_type = GEN_BUFF_TYPE;
4688                 sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys);
4689                 if (sglq_entry->virt == NULL) {
4690                         kfree(sglq_entry);
4691                         printk(KERN_ERR "%s: failed to allocate mbuf.\n"
4692                                 "Unloading driver.\n", __func__);
4693                         goto out_free_mem;
4694                 }
4695                 sglq_entry->sgl = sglq_entry->virt;
4696                 memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
4697
4698                 /* The list order is used by later block SGL registraton */
4699                 spin_lock_irq(&phba->hbalock);
4700                 sglq_entry->state = SGL_FREED;
4701                 list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list);
4702                 phba->sli4_hba.lpfc_els_sgl_array[i] = sglq_entry;
4703                 phba->sli4_hba.total_sglq_bufs++;
4704                 spin_unlock_irq(&phba->hbalock);
4705         }
4706         return 0;
4707
4708 out_free_mem:
4709         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4710         lpfc_free_sgl_list(phba);
4711         return -ENOMEM;
4712 }
4713
4714 /**
4715  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
4716  * @phba: pointer to lpfc hba data structure.
4717  *
4718  * This routine is invoked to post rpi header templates to the
4719  * HBA consistent with the SLI-4 interface spec.  This routine
4720  * posts a PAGE_SIZE memory region to the port to hold up to
4721  * PAGE_SIZE modulo 64 rpi context headers.
4722  * No locks are held here because this is an initialization routine
4723  * called only from probe or lpfc_online when interrupts are not
4724  * enabled and the driver is reinitializing the device.
4725  *
4726  * Return codes
4727  *      0 - successful
4728  *      ENOMEM - No availble memory
4729  *      EIO - The mailbox failed to complete successfully.
4730  **/
4731 int
4732 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
4733 {
4734         int rc = 0;
4735         int longs;
4736         uint16_t rpi_count;
4737         struct lpfc_rpi_hdr *rpi_hdr;
4738
4739         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
4740
4741         /*
4742          * Provision an rpi bitmask range for discovery. The total count
4743          * is the difference between max and base + 1.
4744          */
4745         rpi_count = phba->sli4_hba.max_cfg_param.rpi_base +
4746                     phba->sli4_hba.max_cfg_param.max_rpi - 1;
4747
4748         longs = ((rpi_count) + BITS_PER_LONG - 1) / BITS_PER_LONG;
4749         phba->sli4_hba.rpi_bmask = kzalloc(longs * sizeof(unsigned long),
4750                                            GFP_KERNEL);
4751         if (!phba->sli4_hba.rpi_bmask)
4752                 return -ENOMEM;
4753
4754         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
4755         if (!rpi_hdr) {
4756                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4757                                 "0391 Error during rpi post operation\n");
4758                 lpfc_sli4_remove_rpis(phba);
4759                 rc = -ENODEV;
4760         }
4761
4762         return rc;
4763 }
4764
4765 /**
4766  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
4767  * @phba: pointer to lpfc hba data structure.
4768  *
4769  * This routine is invoked to allocate a single 4KB memory region to
4770  * support rpis and stores them in the phba.  This single region
4771  * provides support for up to 64 rpis.  The region is used globally
4772  * by the device.
4773  *
4774  * Returns:
4775  *   A valid rpi hdr on success.
4776  *   A NULL pointer on any failure.
4777  **/
4778 struct lpfc_rpi_hdr *
4779 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
4780 {
4781         uint16_t rpi_limit, curr_rpi_range;
4782         struct lpfc_dmabuf *dmabuf;
4783         struct lpfc_rpi_hdr *rpi_hdr;
4784
4785         rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
4786                     phba->sli4_hba.max_cfg_param.max_rpi - 1;
4787
4788         spin_lock_irq(&phba->hbalock);
4789         curr_rpi_range = phba->sli4_hba.next_rpi;
4790         spin_unlock_irq(&phba->hbalock);
4791
4792         /*
4793          * The port has a limited number of rpis. The increment here
4794          * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
4795          * and to allow the full max_rpi range per port.
4796          */
4797         if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
4798                 return NULL;
4799
4800         /*
4801          * First allocate the protocol header region for the port.  The
4802          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
4803          */
4804         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4805         if (!dmabuf)
4806                 return NULL;
4807
4808         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
4809                                           LPFC_HDR_TEMPLATE_SIZE,
4810                                           &dmabuf->phys,
4811                                           GFP_KERNEL);
4812         if (!dmabuf->virt) {
4813                 rpi_hdr = NULL;
4814                 goto err_free_dmabuf;
4815         }
4816
4817         memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE);
4818         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
4819                 rpi_hdr = NULL;
4820                 goto err_free_coherent;
4821         }
4822
4823         /* Save the rpi header data for cleanup later. */
4824         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
4825         if (!rpi_hdr)
4826                 goto err_free_coherent;
4827
4828         rpi_hdr->dmabuf = dmabuf;
4829         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
4830         rpi_hdr->page_count = 1;
4831         spin_lock_irq(&phba->hbalock);
4832         rpi_hdr->start_rpi = phba->sli4_hba.next_rpi;
4833         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
4834
4835         /*
4836          * The next_rpi stores the next module-64 rpi value to post
4837          * in any subsequent rpi memory region postings.
4838          */
4839         phba->sli4_hba.next_rpi += LPFC_RPI_HDR_COUNT;
4840         spin_unlock_irq(&phba->hbalock);
4841         return rpi_hdr;
4842
4843  err_free_coherent:
4844         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
4845                           dmabuf->virt, dmabuf->phys);
4846  err_free_dmabuf:
4847         kfree(dmabuf);
4848         return NULL;
4849 }
4850
4851 /**
4852  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
4853  * @phba: pointer to lpfc hba data structure.
4854  *
4855  * This routine is invoked to remove all memory resources allocated
4856  * to support rpis. This routine presumes the caller has released all
4857  * rpis consumed by fabric or port logins and is prepared to have
4858  * the header pages removed.
4859  **/
4860 void
4861 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
4862 {
4863         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
4864
4865         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
4866                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
4867                 list_del(&rpi_hdr->list);
4868                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
4869                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
4870                 kfree(rpi_hdr->dmabuf);
4871                 kfree(rpi_hdr);
4872         }
4873
4874         phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.rpi_base;
4875         memset(phba->sli4_hba.rpi_bmask, 0, sizeof(*phba->sli4_hba.rpi_bmask));
4876 }
4877
4878 /**
4879  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
4880  * @pdev: pointer to pci device data structure.
4881  *
4882  * This routine is invoked to allocate the driver hba data structure for an
4883  * HBA device. If the allocation is successful, the phba reference to the
4884  * PCI device data structure is set.
4885  *
4886  * Return codes
4887  *      pointer to @phba - successful
4888  *      NULL - error
4889  **/
4890 static struct lpfc_hba *
4891 lpfc_hba_alloc(struct pci_dev *pdev)
4892 {
4893         struct lpfc_hba *phba;
4894
4895         /* Allocate memory for HBA structure */
4896         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
4897         if (!phba) {
4898                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
4899                 return NULL;
4900         }
4901
4902         /* Set reference to PCI device in HBA structure */
4903         phba->pcidev = pdev;
4904
4905         /* Assign an unused board number */
4906         phba->brd_no = lpfc_get_instance();
4907         if (phba->brd_no < 0) {
4908                 kfree(phba);
4909                 return NULL;
4910         }
4911
4912         spin_lock_init(&phba->ct_ev_lock);
4913         INIT_LIST_HEAD(&phba->ct_ev_waiters);
4914
4915         return phba;
4916 }
4917
4918 /**
4919  * lpfc_hba_free - Free driver hba data structure with a device.
4920  * @phba: pointer to lpfc hba data structure.
4921  *
4922  * This routine is invoked to free the driver hba data structure with an
4923  * HBA device.
4924  **/
4925 static void
4926 lpfc_hba_free(struct lpfc_hba *phba)
4927 {
4928         /* Release the driver assigned board number */
4929         idr_remove(&lpfc_hba_index, phba->brd_no);
4930
4931         kfree(phba);
4932         return;
4933 }
4934
4935 /**
4936  * lpfc_create_shost - Create hba physical port with associated scsi host.
4937  * @phba: pointer to lpfc hba data structure.
4938  *
4939  * This routine is invoked to create HBA physical port and associate a SCSI
4940  * host with it.
4941  *
4942  * Return codes
4943  *      0 - successful
4944  *      other values - error
4945  **/
4946 static int
4947 lpfc_create_shost(struct lpfc_hba *phba)
4948 {
4949         struct lpfc_vport *vport;
4950         struct Scsi_Host  *shost;
4951
4952         /* Initialize HBA FC structure */
4953         phba->fc_edtov = FF_DEF_EDTOV;
4954         phba->fc_ratov = FF_DEF_RATOV;
4955         phba->fc_altov = FF_DEF_ALTOV;
4956         phba->fc_arbtov = FF_DEF_ARBTOV;
4957
4958         atomic_set(&phba->sdev_cnt, 0);
4959         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
4960         if (!vport)
4961                 return -ENODEV;
4962
4963         shost = lpfc_shost_from_vport(vport);
4964         phba->pport = vport;
4965         lpfc_debugfs_initialize(vport);
4966         /* Put reference to SCSI host to driver's device private data */
4967         pci_set_drvdata(phba->pcidev, shost);
4968
4969         return 0;
4970 }
4971
4972 /**
4973  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
4974  * @phba: pointer to lpfc hba data structure.
4975  *
4976  * This routine is invoked to destroy HBA physical port and the associated
4977  * SCSI host.
4978  **/
4979 static void
4980 lpfc_destroy_shost(struct lpfc_hba *phba)
4981 {
4982         struct lpfc_vport *vport = phba->pport;
4983
4984         /* Destroy physical port that associated with the SCSI host */
4985         destroy_port(vport);
4986
4987         return;
4988 }
4989
4990 /**
4991  * lpfc_setup_bg - Setup Block guard structures and debug areas.
4992  * @phba: pointer to lpfc hba data structure.
4993  * @shost: the shost to be used to detect Block guard settings.
4994  *
4995  * This routine sets up the local Block guard protocol settings for @shost.
4996  * This routine also allocates memory for debugging bg buffers.
4997  **/
4998 static void
4999 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
5000 {
5001         int pagecnt = 10;
5002         if (lpfc_prot_mask && lpfc_prot_guard) {
5003                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5004                                 "1478 Registering BlockGuard with the "
5005                                 "SCSI layer\n");
5006                 scsi_host_set_prot(shost, lpfc_prot_mask);
5007                 scsi_host_set_guard(shost, lpfc_prot_guard);
5008         }
5009         if (!_dump_buf_data) {
5010                 while (pagecnt) {
5011                         spin_lock_init(&_dump_buf_lock);
5012                         _dump_buf_data =
5013                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5014                         if (_dump_buf_data) {
5015                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5016                                         "9043 BLKGRD: allocated %d pages for "
5017                                        "_dump_buf_data at 0x%p\n",
5018                                        (1 << pagecnt), _dump_buf_data);
5019                                 _dump_buf_data_order = pagecnt;
5020                                 memset(_dump_buf_data, 0,
5021                                        ((1 << PAGE_SHIFT) << pagecnt));
5022                                 break;
5023                         } else
5024                                 --pagecnt;
5025                 }
5026                 if (!_dump_buf_data_order)
5027                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5028                                 "9044 BLKGRD: ERROR unable to allocate "
5029                                "memory for hexdump\n");
5030         } else
5031                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5032                         "9045 BLKGRD: already allocated _dump_buf_data=0x%p"
5033                        "\n", _dump_buf_data);
5034         if (!_dump_buf_dif) {
5035                 while (pagecnt) {
5036                         _dump_buf_dif =
5037                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5038                         if (_dump_buf_dif) {
5039                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5040                                         "9046 BLKGRD: allocated %d pages for "
5041                                        "_dump_buf_dif at 0x%p\n",
5042                                        (1 << pagecnt), _dump_buf_dif);
5043                                 _dump_buf_dif_order = pagecnt;
5044                                 memset(_dump_buf_dif, 0,
5045                                        ((1 << PAGE_SHIFT) << pagecnt));
5046                                 break;
5047                         } else
5048                                 --pagecnt;
5049                 }
5050                 if (!_dump_buf_dif_order)
5051                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5052                         "9047 BLKGRD: ERROR unable to allocate "
5053                                "memory for hexdump\n");
5054         } else
5055                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5056                         "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
5057                        _dump_buf_dif);
5058 }
5059
5060 /**
5061  * lpfc_post_init_setup - Perform necessary device post initialization setup.
5062  * @phba: pointer to lpfc hba data structure.
5063  *
5064  * This routine is invoked to perform all the necessary post initialization
5065  * setup for the device.
5066  **/
5067 static void
5068 lpfc_post_init_setup(struct lpfc_hba *phba)
5069 {
5070         struct Scsi_Host  *shost;
5071         struct lpfc_adapter_event_header adapter_event;
5072
5073         /* Get the default values for Model Name and Description */
5074         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
5075
5076         /*
5077          * hba setup may have changed the hba_queue_depth so we need to
5078          * adjust the value of can_queue.
5079          */
5080         shost = pci_get_drvdata(phba->pcidev);
5081         shost->can_queue = phba->cfg_hba_queue_depth - 10;
5082         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
5083                 lpfc_setup_bg(phba, shost);
5084
5085         lpfc_host_attrib_init(shost);
5086
5087         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
5088                 spin_lock_irq(shost->host_lock);
5089                 lpfc_poll_start_timer(phba);
5090                 spin_unlock_irq(shost->host_lock);
5091         }
5092
5093         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5094                         "0428 Perform SCSI scan\n");
5095         /* Send board arrival event to upper layer */
5096         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
5097         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
5098         fc_host_post_vendor_event(shost, fc_get_event_number(),
5099                                   sizeof(adapter_event),
5100                                   (char *) &adapter_event,
5101                                   LPFC_NL_VENDOR_ID);
5102         return;
5103 }
5104
5105 /**
5106  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
5107  * @phba: pointer to lpfc hba data structure.
5108  *
5109  * This routine is invoked to set up the PCI device memory space for device
5110  * with SLI-3 interface spec.
5111  *
5112  * Return codes
5113  *      0 - successful
5114  *      other values - error
5115  **/
5116 static int
5117 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
5118 {
5119         struct pci_dev *pdev;
5120         unsigned long bar0map_len, bar2map_len;
5121         int i, hbq_count;
5122         void *ptr;
5123         int error = -ENODEV;
5124
5125         /* Obtain PCI device reference */
5126         if (!phba->pcidev)
5127                 return error;
5128         else
5129                 pdev = phba->pcidev;
5130
5131         /* Set the device DMA mask size */
5132         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
5133          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
5134                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
5135                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
5136                         return error;
5137                 }
5138         }
5139
5140         /* Get the bus address of Bar0 and Bar2 and the number of bytes
5141          * required by each mapping.
5142          */
5143         phba->pci_bar0_map = pci_resource_start(pdev, 0);
5144         bar0map_len = pci_resource_len(pdev, 0);
5145
5146         phba->pci_bar2_map = pci_resource_start(pdev, 2);
5147         bar2map_len = pci_resource_len(pdev, 2);
5148
5149         /* Map HBA SLIM to a kernel virtual address. */
5150         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
5151         if (!phba->slim_memmap_p) {
5152                 dev_printk(KERN_ERR, &pdev->dev,
5153                            "ioremap failed for SLIM memory.\n");
5154                 goto out;
5155         }
5156
5157         /* Map HBA Control Registers to a kernel virtual address. */
5158         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
5159         if (!phba->ctrl_regs_memmap_p) {
5160                 dev_printk(KERN_ERR, &pdev->dev,
5161                            "ioremap failed for HBA control registers.\n");
5162                 goto out_iounmap_slim;
5163         }
5164
5165         /* Allocate memory for SLI-2 structures */
5166         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev,
5167                                                SLI2_SLIM_SIZE,
5168                                                &phba->slim2p.phys,
5169                                                GFP_KERNEL);
5170         if (!phba->slim2p.virt)
5171                 goto out_iounmap;
5172
5173         memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
5174         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
5175         phba->mbox_ext = (phba->slim2p.virt +
5176                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
5177         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
5178         phba->IOCBs = (phba->slim2p.virt +
5179                        offsetof(struct lpfc_sli2_slim, IOCBs));
5180
5181         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
5182                                                  lpfc_sli_hbq_size(),
5183                                                  &phba->hbqslimp.phys,
5184                                                  GFP_KERNEL);
5185         if (!phba->hbqslimp.virt)
5186                 goto out_free_slim;
5187
5188         hbq_count = lpfc_sli_hbq_count();
5189         ptr = phba->hbqslimp.virt;
5190         for (i = 0; i < hbq_count; ++i) {
5191                 phba->hbqs[i].hbq_virt = ptr;
5192                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
5193                 ptr += (lpfc_hbq_defs[i]->entry_count *
5194                         sizeof(struct lpfc_hbq_entry));
5195         }
5196         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
5197         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
5198
5199         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
5200
5201         INIT_LIST_HEAD(&phba->rb_pend_list);
5202
5203         phba->MBslimaddr = phba->slim_memmap_p;
5204         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
5205         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
5206         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
5207         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
5208
5209         return 0;
5210
5211 out_free_slim:
5212         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5213                           phba->slim2p.virt, phba->slim2p.phys);
5214 out_iounmap:
5215         iounmap(phba->ctrl_regs_memmap_p);
5216 out_iounmap_slim:
5217         iounmap(phba->slim_memmap_p);
5218 out:
5219         return error;
5220 }
5221
5222 /**
5223  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
5224  * @phba: pointer to lpfc hba data structure.
5225  *
5226  * This routine is invoked to unset the PCI device memory space for device
5227  * with SLI-3 interface spec.
5228  **/
5229 static void
5230 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
5231 {
5232         struct pci_dev *pdev;
5233
5234         /* Obtain PCI device reference */
5235         if (!phba->pcidev)
5236                 return;
5237         else
5238                 pdev = phba->pcidev;
5239
5240         /* Free coherent DMA memory allocated */
5241         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
5242                           phba->hbqslimp.virt, phba->hbqslimp.phys);
5243         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5244                           phba->slim2p.virt, phba->slim2p.phys);
5245
5246         /* I/O memory unmap */
5247         iounmap(phba->ctrl_regs_memmap_p);
5248         iounmap(phba->slim_memmap_p);
5249
5250         return;
5251 }
5252
5253 /**
5254  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
5255  * @phba: pointer to lpfc hba data structure.
5256  *
5257  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
5258  * done and check status.
5259  *
5260  * Return 0 if successful, otherwise -ENODEV.
5261  **/
5262 int
5263 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
5264 {
5265         struct lpfc_register sta_reg, uerrlo_reg, uerrhi_reg;
5266         int i, port_error = -ENODEV;
5267
5268         if (!phba->sli4_hba.STAregaddr)
5269                 return -ENODEV;
5270
5271         /* Wait up to 30 seconds for the SLI Port POST done and ready */
5272         for (i = 0; i < 3000; i++) {
5273                 sta_reg.word0 = readl(phba->sli4_hba.STAregaddr);
5274                 /* Encounter fatal POST error, break out */
5275                 if (bf_get(lpfc_hst_state_perr, &sta_reg)) {
5276                         port_error = -ENODEV;
5277                         break;
5278                 }
5279                 if (LPFC_POST_STAGE_ARMFW_READY ==
5280                     bf_get(lpfc_hst_state_port_status, &sta_reg)) {
5281                         port_error = 0;
5282                         break;
5283                 }
5284                 msleep(10);
5285         }
5286
5287         if (port_error)
5288                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5289                         "1408 Failure HBA POST Status: sta_reg=0x%x, "
5290                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, xrom=x%x, "
5291                         "dl=x%x, pstatus=x%x\n", sta_reg.word0,
5292                         bf_get(lpfc_hst_state_perr, &sta_reg),
5293                         bf_get(lpfc_hst_state_sfi, &sta_reg),
5294                         bf_get(lpfc_hst_state_nip, &sta_reg),
5295                         bf_get(lpfc_hst_state_ipc, &sta_reg),
5296                         bf_get(lpfc_hst_state_xrom, &sta_reg),
5297                         bf_get(lpfc_hst_state_dl, &sta_reg),
5298                         bf_get(lpfc_hst_state_port_status, &sta_reg));
5299
5300         /* Log device information */
5301         phba->sli4_hba.sli_intf.word0 = readl(phba->sli4_hba.SLIINTFregaddr);
5302         if (bf_get(lpfc_sli_intf_valid,
5303                    &phba->sli4_hba.sli_intf) == LPFC_SLI_INTF_VALID) {
5304                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5305                                 "2534 Device Info: ChipType=0x%x, SliRev=0x%x, "
5306                                 "FeatureL1=0x%x, FeatureL2=0x%x\n",
5307                                 bf_get(lpfc_sli_intf_sli_family,
5308                                        &phba->sli4_hba.sli_intf),
5309                                 bf_get(lpfc_sli_intf_slirev,
5310                                        &phba->sli4_hba.sli_intf),
5311                                 bf_get(lpfc_sli_intf_featurelevel1,
5312                                        &phba->sli4_hba.sli_intf),
5313                                 bf_get(lpfc_sli_intf_featurelevel2,
5314                                        &phba->sli4_hba.sli_intf));
5315         }
5316         phba->sli4_hba.ue_mask_lo = readl(phba->sli4_hba.UEMASKLOregaddr);
5317         phba->sli4_hba.ue_mask_hi = readl(phba->sli4_hba.UEMASKHIregaddr);
5318         /* With uncoverable error, log the error message and return error */
5319         uerrlo_reg.word0 = readl(phba->sli4_hba.UERRLOregaddr);
5320         uerrhi_reg.word0 = readl(phba->sli4_hba.UERRHIregaddr);
5321         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
5322             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
5323                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5324                                 "1422 HBA Unrecoverable error: "
5325                                 "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
5326                                 "ue_mask_lo_reg=0x%x, ue_mask_hi_reg=0x%x\n",
5327                                 uerrlo_reg.word0, uerrhi_reg.word0,
5328                                 phba->sli4_hba.ue_mask_lo,
5329                                 phba->sli4_hba.ue_mask_hi);
5330                 return -ENODEV;
5331         }
5332
5333         return port_error;
5334 }
5335
5336 /**
5337  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
5338  * @phba: pointer to lpfc hba data structure.
5339  *
5340  * This routine is invoked to set up SLI4 BAR0 PCI config space register
5341  * memory map.
5342  **/
5343 static void
5344 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba)
5345 {
5346         phba->sli4_hba.UERRLOregaddr = phba->sli4_hba.conf_regs_memmap_p +
5347                                         LPFC_UERR_STATUS_LO;
5348         phba->sli4_hba.UERRHIregaddr = phba->sli4_hba.conf_regs_memmap_p +
5349                                         LPFC_UERR_STATUS_HI;
5350         phba->sli4_hba.UEMASKLOregaddr = phba->sli4_hba.conf_regs_memmap_p +
5351                                         LPFC_UE_MASK_LO;
5352         phba->sli4_hba.UEMASKHIregaddr = phba->sli4_hba.conf_regs_memmap_p +
5353                                         LPFC_UE_MASK_HI;
5354         phba->sli4_hba.SLIINTFregaddr = phba->sli4_hba.conf_regs_memmap_p +
5355                                         LPFC_SLI_INTF;
5356 }
5357
5358 /**
5359  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
5360  * @phba: pointer to lpfc hba data structure.
5361  *
5362  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
5363  * memory map.
5364  **/
5365 static void
5366 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
5367 {
5368
5369         phba->sli4_hba.STAregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5370                                     LPFC_HST_STATE;
5371         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5372                                     LPFC_HST_ISR0;
5373         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5374                                     LPFC_HST_IMR0;
5375         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5376                                      LPFC_HST_ISCR0;
5377         return;
5378 }
5379
5380 /**
5381  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
5382  * @phba: pointer to lpfc hba data structure.
5383  * @vf: virtual function number
5384  *
5385  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
5386  * based on the given viftual function number, @vf.
5387  *
5388  * Return 0 if successful, otherwise -ENODEV.
5389  **/
5390 static int
5391 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
5392 {
5393         if (vf > LPFC_VIR_FUNC_MAX)
5394                 return -ENODEV;
5395
5396         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5397                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_RQ_DOORBELL);
5398         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5399                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_WQ_DOORBELL);
5400         phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5401                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
5402         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5403                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
5404         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5405                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
5406         return 0;
5407 }
5408
5409 /**
5410  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
5411  * @phba: pointer to lpfc hba data structure.
5412  *
5413  * This routine is invoked to create the bootstrap mailbox
5414  * region consistent with the SLI-4 interface spec.  This
5415  * routine allocates all memory necessary to communicate
5416  * mailbox commands to the port and sets up all alignment
5417  * needs.  No locks are expected to be held when calling
5418  * this routine.
5419  *
5420  * Return codes
5421  *      0 - successful
5422  *      ENOMEM - could not allocated memory.
5423  **/
5424 static int
5425 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
5426 {
5427         uint32_t bmbx_size;
5428         struct lpfc_dmabuf *dmabuf;
5429         struct dma_address *dma_address;
5430         uint32_t pa_addr;
5431         uint64_t phys_addr;
5432
5433         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5434         if (!dmabuf)
5435                 return -ENOMEM;
5436
5437         /*
5438          * The bootstrap mailbox region is comprised of 2 parts
5439          * plus an alignment restriction of 16 bytes.
5440          */
5441         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
5442         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5443                                           bmbx_size,
5444                                           &dmabuf->phys,
5445                                           GFP_KERNEL);
5446         if (!dmabuf->virt) {
5447                 kfree(dmabuf);
5448                 return -ENOMEM;
5449         }
5450         memset(dmabuf->virt, 0, bmbx_size);
5451
5452         /*
5453          * Initialize the bootstrap mailbox pointers now so that the register
5454          * operations are simple later.  The mailbox dma address is required
5455          * to be 16-byte aligned.  Also align the virtual memory as each
5456          * maibox is copied into the bmbx mailbox region before issuing the
5457          * command to the port.
5458          */
5459         phba->sli4_hba.bmbx.dmabuf = dmabuf;
5460         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
5461
5462         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
5463                                               LPFC_ALIGN_16_BYTE);
5464         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
5465                                               LPFC_ALIGN_16_BYTE);
5466
5467         /*
5468          * Set the high and low physical addresses now.  The SLI4 alignment
5469          * requirement is 16 bytes and the mailbox is posted to the port
5470          * as two 30-bit addresses.  The other data is a bit marking whether
5471          * the 30-bit address is the high or low address.
5472          * Upcast bmbx aphys to 64bits so shift instruction compiles
5473          * clean on 32 bit machines.
5474          */
5475         dma_address = &phba->sli4_hba.bmbx.dma_address;
5476         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
5477         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
5478         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
5479                                            LPFC_BMBX_BIT1_ADDR_HI);
5480
5481         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
5482         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
5483                                            LPFC_BMBX_BIT1_ADDR_LO);
5484         return 0;
5485 }
5486
5487 /**
5488  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
5489  * @phba: pointer to lpfc hba data structure.
5490  *
5491  * This routine is invoked to teardown the bootstrap mailbox
5492  * region and release all host resources. This routine requires
5493  * the caller to ensure all mailbox commands recovered, no
5494  * additional mailbox comands are sent, and interrupts are disabled
5495  * before calling this routine.
5496  *
5497  **/
5498 static void
5499 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
5500 {
5501         dma_free_coherent(&phba->pcidev->dev,
5502                           phba->sli4_hba.bmbx.bmbx_size,
5503                           phba->sli4_hba.bmbx.dmabuf->virt,
5504                           phba->sli4_hba.bmbx.dmabuf->phys);
5505
5506         kfree(phba->sli4_hba.bmbx.dmabuf);
5507         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
5508 }
5509
5510 /**
5511  * lpfc_sli4_read_config - Get the config parameters.
5512  * @phba: pointer to lpfc hba data structure.
5513  *
5514  * This routine is invoked to read the configuration parameters from the HBA.
5515  * The configuration parameters are used to set the base and maximum values
5516  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
5517  * allocation for the port.
5518  *
5519  * Return codes
5520  *      0 - successful
5521  *      ENOMEM - No availble memory
5522  *      EIO - The mailbox failed to complete successfully.
5523  **/
5524 static int
5525 lpfc_sli4_read_config(struct lpfc_hba *phba)
5526 {
5527         LPFC_MBOXQ_t *pmb;
5528         struct lpfc_mbx_read_config *rd_config;
5529         uint32_t rc = 0;
5530
5531         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5532         if (!pmb) {
5533                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5534                                 "2011 Unable to allocate memory for issuing "
5535                                 "SLI_CONFIG_SPECIAL mailbox command\n");
5536                 return -ENOMEM;
5537         }
5538
5539         lpfc_read_config(phba, pmb);
5540
5541         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
5542         if (rc != MBX_SUCCESS) {
5543                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5544                         "2012 Mailbox failed , mbxCmd x%x "
5545                         "READ_CONFIG, mbxStatus x%x\n",
5546                         bf_get(lpfc_mqe_command, &pmb->u.mqe),
5547                         bf_get(lpfc_mqe_status, &pmb->u.mqe));
5548                 rc = -EIO;
5549         } else {
5550                 rd_config = &pmb->u.mqe.un.rd_config;
5551                 phba->sli4_hba.max_cfg_param.max_xri =
5552                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
5553                 phba->sli4_hba.max_cfg_param.xri_base =
5554                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
5555                 phba->sli4_hba.max_cfg_param.max_vpi =
5556                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
5557                 phba->sli4_hba.max_cfg_param.vpi_base =
5558                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
5559                 phba->sli4_hba.max_cfg_param.max_rpi =
5560                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
5561                 phba->sli4_hba.max_cfg_param.rpi_base =
5562                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
5563                 phba->sli4_hba.max_cfg_param.max_vfi =
5564                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
5565                 phba->sli4_hba.max_cfg_param.vfi_base =
5566                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
5567                 phba->sli4_hba.max_cfg_param.max_fcfi =
5568                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
5569                 phba->sli4_hba.max_cfg_param.fcfi_base =
5570                         bf_get(lpfc_mbx_rd_conf_fcfi_base, rd_config);
5571                 phba->sli4_hba.max_cfg_param.max_eq =
5572                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
5573                 phba->sli4_hba.max_cfg_param.max_rq =
5574                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
5575                 phba->sli4_hba.max_cfg_param.max_wq =
5576                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
5577                 phba->sli4_hba.max_cfg_param.max_cq =
5578                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
5579                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
5580                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
5581                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
5582                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
5583                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.rpi_base;
5584                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
5585                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
5586                 phba->max_vports = phba->max_vpi;
5587                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5588                                 "2003 cfg params XRI(B:%d M:%d), "
5589                                 "VPI(B:%d M:%d) "
5590                                 "VFI(B:%d M:%d) "
5591                                 "RPI(B:%d M:%d) "
5592                                 "FCFI(B:%d M:%d)\n",
5593                                 phba->sli4_hba.max_cfg_param.xri_base,
5594                                 phba->sli4_hba.max_cfg_param.max_xri,
5595                                 phba->sli4_hba.max_cfg_param.vpi_base,
5596                                 phba->sli4_hba.max_cfg_param.max_vpi,
5597                                 phba->sli4_hba.max_cfg_param.vfi_base,
5598                                 phba->sli4_hba.max_cfg_param.max_vfi,
5599                                 phba->sli4_hba.max_cfg_param.rpi_base,
5600                                 phba->sli4_hba.max_cfg_param.max_rpi,
5601                                 phba->sli4_hba.max_cfg_param.fcfi_base,
5602                                 phba->sli4_hba.max_cfg_param.max_fcfi);
5603         }
5604         mempool_free(pmb, phba->mbox_mem_pool);
5605
5606         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
5607         if (phba->cfg_hba_queue_depth >
5608                 (phba->sli4_hba.max_cfg_param.max_xri -
5609                         lpfc_sli4_get_els_iocb_cnt(phba)))
5610                 phba->cfg_hba_queue_depth =
5611                         phba->sli4_hba.max_cfg_param.max_xri -
5612                                 lpfc_sli4_get_els_iocb_cnt(phba);
5613         return rc;
5614 }
5615
5616 /**
5617  * lpfc_dev_endian_order_setup - Notify the port of the host's endian order.
5618  * @phba: pointer to lpfc hba data structure.
5619  *
5620  * This routine is invoked to setup the host-side endian order to the
5621  * HBA consistent with the SLI-4 interface spec.
5622  *
5623  * Return codes
5624  *      0 - successful
5625  *      ENOMEM - No availble memory
5626  *      EIO - The mailbox failed to complete successfully.
5627  **/
5628 static int
5629 lpfc_setup_endian_order(struct lpfc_hba *phba)
5630 {
5631         LPFC_MBOXQ_t *mboxq;
5632         uint32_t rc = 0;
5633         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
5634                                       HOST_ENDIAN_HIGH_WORD1};
5635
5636         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5637         if (!mboxq) {
5638                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5639                                 "0492 Unable to allocate memory for issuing "
5640                                 "SLI_CONFIG_SPECIAL mailbox command\n");
5641                 return -ENOMEM;
5642         }
5643
5644         /*
5645          * The SLI4_CONFIG_SPECIAL mailbox command requires the first two
5646          * words to contain special data values and no other data.
5647          */
5648         memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
5649         memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
5650         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
5651         if (rc != MBX_SUCCESS) {
5652                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5653                                 "0493 SLI_CONFIG_SPECIAL mailbox failed with "
5654                                 "status x%x\n",
5655                                 rc);
5656                 rc = -EIO;
5657         }
5658
5659         mempool_free(mboxq, phba->mbox_mem_pool);
5660         return rc;
5661 }
5662
5663 /**
5664  * lpfc_sli4_queue_create - Create all the SLI4 queues
5665  * @phba: pointer to lpfc hba data structure.
5666  *
5667  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
5668  * operation. For each SLI4 queue type, the parameters such as queue entry
5669  * count (queue depth) shall be taken from the module parameter. For now,
5670  * we just use some constant number as place holder.
5671  *
5672  * Return codes
5673  *      0 - successful
5674  *      ENOMEM - No availble memory
5675  *      EIO - The mailbox failed to complete successfully.
5676  **/
5677 static int
5678 lpfc_sli4_queue_create(struct lpfc_hba *phba)
5679 {
5680         struct lpfc_queue *qdesc;
5681         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
5682         int cfg_fcp_wq_count;
5683         int cfg_fcp_eq_count;
5684
5685         /*
5686          * Sanity check for confiugred queue parameters against the run-time
5687          * device parameters
5688          */
5689
5690         /* Sanity check on FCP fast-path WQ parameters */
5691         cfg_fcp_wq_count = phba->cfg_fcp_wq_count;
5692         if (cfg_fcp_wq_count >
5693             (phba->sli4_hba.max_cfg_param.max_wq - LPFC_SP_WQN_DEF)) {
5694                 cfg_fcp_wq_count = phba->sli4_hba.max_cfg_param.max_wq -
5695                                    LPFC_SP_WQN_DEF;
5696                 if (cfg_fcp_wq_count < LPFC_FP_WQN_MIN) {
5697                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5698                                         "2581 Not enough WQs (%d) from "
5699                                         "the pci function for supporting "
5700                                         "FCP WQs (%d)\n",
5701                                         phba->sli4_hba.max_cfg_param.max_wq,
5702                                         phba->cfg_fcp_wq_count);
5703                         goto out_error;
5704                 }
5705                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
5706                                 "2582 Not enough WQs (%d) from the pci "
5707                                 "function for supporting the requested "
5708                                 "FCP WQs (%d), the actual FCP WQs can "
5709                                 "be supported: %d\n",
5710                                 phba->sli4_hba.max_cfg_param.max_wq,
5711                                 phba->cfg_fcp_wq_count, cfg_fcp_wq_count);
5712         }
5713         /* The actual number of FCP work queues adopted */
5714         phba->cfg_fcp_wq_count = cfg_fcp_wq_count;
5715
5716         /* Sanity check on FCP fast-path EQ parameters */
5717         cfg_fcp_eq_count = phba->cfg_fcp_eq_count;
5718         if (cfg_fcp_eq_count >
5719             (phba->sli4_hba.max_cfg_param.max_eq - LPFC_SP_EQN_DEF)) {
5720                 cfg_fcp_eq_count = phba->sli4_hba.max_cfg_param.max_eq -
5721                                    LPFC_SP_EQN_DEF;
5722                 if (cfg_fcp_eq_count < LPFC_FP_EQN_MIN) {
5723                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5724                                         "2574 Not enough EQs (%d) from the "
5725                                         "pci function for supporting FCP "
5726                                         "EQs (%d)\n",
5727                                         phba->sli4_hba.max_cfg_param.max_eq,
5728                                         phba->cfg_fcp_eq_count);
5729                         goto out_error;
5730                 }
5731                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
5732                                 "2575 Not enough EQs (%d) from the pci "
5733                                 "function for supporting the requested "
5734                                 "FCP EQs (%d), the actual FCP EQs can "
5735                                 "be supported: %d\n",
5736                                 phba->sli4_hba.max_cfg_param.max_eq,
5737                                 phba->cfg_fcp_eq_count, cfg_fcp_eq_count);
5738         }
5739         /* It does not make sense to have more EQs than WQs */
5740         if (cfg_fcp_eq_count > phba->cfg_fcp_wq_count) {
5741                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
5742                                 "2593 The FCP EQ count(%d) cannot be greater "
5743                                 "than the FCP WQ count(%d), limiting the "
5744                                 "FCP EQ count to %d\n", cfg_fcp_eq_count,
5745                                 phba->cfg_fcp_wq_count,
5746                                 phba->cfg_fcp_wq_count);
5747                 cfg_fcp_eq_count = phba->cfg_fcp_wq_count;
5748         }
5749         /* The actual number of FCP event queues adopted */
5750         phba->cfg_fcp_eq_count = cfg_fcp_eq_count;
5751         /* The overall number of event queues used */
5752         phba->sli4_hba.cfg_eqn = phba->cfg_fcp_eq_count + LPFC_SP_EQN_DEF;
5753
5754         /*
5755          * Create Event Queues (EQs)
5756          */
5757
5758         /* Get EQ depth from module parameter, fake the default for now */
5759         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
5760         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
5761
5762         /* Create slow path event queue */
5763         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
5764                                       phba->sli4_hba.eq_ecount);
5765         if (!qdesc) {
5766                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5767                                 "0496 Failed allocate slow-path EQ\n");
5768                 goto out_error;
5769         }
5770         phba->sli4_hba.sp_eq = qdesc;
5771
5772         /* Create fast-path FCP Event Queue(s) */
5773         phba->sli4_hba.fp_eq = kzalloc((sizeof(struct lpfc_queue *) *
5774                                phba->cfg_fcp_eq_count), GFP_KERNEL);
5775         if (!phba->sli4_hba.fp_eq) {
5776                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5777                                 "2576 Failed allocate memory for fast-path "
5778                                 "EQ record array\n");
5779                 goto out_free_sp_eq;
5780         }
5781         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
5782                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
5783                                               phba->sli4_hba.eq_ecount);
5784                 if (!qdesc) {
5785                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5786                                         "0497 Failed allocate fast-path EQ\n");
5787                         goto out_free_fp_eq;
5788                 }
5789                 phba->sli4_hba.fp_eq[fcp_eqidx] = qdesc;
5790         }
5791
5792         /*
5793          * Create Complete Queues (CQs)
5794          */
5795
5796         /* Get CQ depth from module parameter, fake the default for now */
5797         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
5798         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
5799
5800         /* Create slow-path Mailbox Command Complete Queue */
5801         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
5802                                       phba->sli4_hba.cq_ecount);
5803         if (!qdesc) {
5804                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5805                                 "0500 Failed allocate slow-path mailbox CQ\n");
5806                 goto out_free_fp_eq;
5807         }
5808         phba->sli4_hba.mbx_cq = qdesc;
5809
5810         /* Create slow-path ELS Complete Queue */
5811         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
5812                                       phba->sli4_hba.cq_ecount);
5813         if (!qdesc) {
5814                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5815                                 "0501 Failed allocate slow-path ELS CQ\n");
5816                 goto out_free_mbx_cq;
5817         }
5818         phba->sli4_hba.els_cq = qdesc;
5819
5820
5821         /* Create fast-path FCP Completion Queue(s), one-to-one with EQs */
5822         phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
5823                                 phba->cfg_fcp_eq_count), GFP_KERNEL);
5824         if (!phba->sli4_hba.fcp_cq) {
5825                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5826                                 "2577 Failed allocate memory for fast-path "
5827                                 "CQ record array\n");
5828                 goto out_free_els_cq;
5829         }
5830         for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_eq_count; fcp_cqidx++) {
5831                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
5832                                               phba->sli4_hba.cq_ecount);
5833                 if (!qdesc) {
5834                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5835                                         "0499 Failed allocate fast-path FCP "
5836                                         "CQ (%d)\n", fcp_cqidx);
5837                         goto out_free_fcp_cq;
5838                 }
5839                 phba->sli4_hba.fcp_cq[fcp_cqidx] = qdesc;
5840         }
5841
5842         /* Create Mailbox Command Queue */
5843         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
5844         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
5845
5846         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
5847                                       phba->sli4_hba.mq_ecount);
5848         if (!qdesc) {
5849                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5850                                 "0505 Failed allocate slow-path MQ\n");
5851                 goto out_free_fcp_cq;
5852         }
5853         phba->sli4_hba.mbx_wq = qdesc;
5854
5855         /*
5856          * Create all the Work Queues (WQs)
5857          */
5858         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
5859         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
5860
5861         /* Create slow-path ELS Work Queue */
5862         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
5863                                       phba->sli4_hba.wq_ecount);
5864         if (!qdesc) {
5865                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5866                                 "0504 Failed allocate slow-path ELS WQ\n");
5867                 goto out_free_mbx_wq;
5868         }
5869         phba->sli4_hba.els_wq = qdesc;
5870
5871         /* Create fast-path FCP Work Queue(s) */
5872         phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
5873                                 phba->cfg_fcp_wq_count), GFP_KERNEL);
5874         if (!phba->sli4_hba.fcp_wq) {
5875                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5876                                 "2578 Failed allocate memory for fast-path "
5877                                 "WQ record array\n");
5878                 goto out_free_els_wq;
5879         }
5880         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
5881                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
5882                                               phba->sli4_hba.wq_ecount);
5883                 if (!qdesc) {
5884                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5885                                         "0503 Failed allocate fast-path FCP "
5886                                         "WQ (%d)\n", fcp_wqidx);
5887                         goto out_free_fcp_wq;
5888                 }
5889                 phba->sli4_hba.fcp_wq[fcp_wqidx] = qdesc;
5890         }
5891
5892         /*
5893          * Create Receive Queue (RQ)
5894          */
5895         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
5896         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
5897
5898         /* Create Receive Queue for header */
5899         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
5900                                       phba->sli4_hba.rq_ecount);
5901         if (!qdesc) {
5902                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5903                                 "0506 Failed allocate receive HRQ\n");
5904                 goto out_free_fcp_wq;
5905         }
5906         phba->sli4_hba.hdr_rq = qdesc;
5907
5908         /* Create Receive Queue for data */
5909         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
5910                                       phba->sli4_hba.rq_ecount);
5911         if (!qdesc) {
5912                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5913                                 "0507 Failed allocate receive DRQ\n");
5914                 goto out_free_hdr_rq;
5915         }
5916         phba->sli4_hba.dat_rq = qdesc;
5917
5918         return 0;
5919
5920 out_free_hdr_rq:
5921         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
5922         phba->sli4_hba.hdr_rq = NULL;
5923 out_free_fcp_wq:
5924         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--) {
5925                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_wqidx]);
5926                 phba->sli4_hba.fcp_wq[fcp_wqidx] = NULL;
5927         }
5928         kfree(phba->sli4_hba.fcp_wq);
5929 out_free_els_wq:
5930         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
5931         phba->sli4_hba.els_wq = NULL;
5932 out_free_mbx_wq:
5933         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
5934         phba->sli4_hba.mbx_wq = NULL;
5935 out_free_fcp_cq:
5936         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--) {
5937                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_cqidx]);
5938                 phba->sli4_hba.fcp_cq[fcp_cqidx] = NULL;
5939         }
5940         kfree(phba->sli4_hba.fcp_cq);
5941 out_free_els_cq:
5942         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
5943         phba->sli4_hba.els_cq = NULL;
5944 out_free_mbx_cq:
5945         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
5946         phba->sli4_hba.mbx_cq = NULL;
5947 out_free_fp_eq:
5948         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--) {
5949                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_eqidx]);
5950                 phba->sli4_hba.fp_eq[fcp_eqidx] = NULL;
5951         }
5952         kfree(phba->sli4_hba.fp_eq);
5953 out_free_sp_eq:
5954         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
5955         phba->sli4_hba.sp_eq = NULL;
5956 out_error:
5957         return -ENOMEM;
5958 }
5959
5960 /**
5961  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
5962  * @phba: pointer to lpfc hba data structure.
5963  *
5964  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
5965  * operation.
5966  *
5967  * Return codes
5968  *      0 - successful
5969  *      ENOMEM - No availble memory
5970  *      EIO - The mailbox failed to complete successfully.
5971  **/
5972 static void
5973 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
5974 {
5975         int fcp_qidx;
5976
5977         /* Release mailbox command work queue */
5978         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
5979         phba->sli4_hba.mbx_wq = NULL;
5980
5981         /* Release ELS work queue */
5982         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
5983         phba->sli4_hba.els_wq = NULL;
5984
5985         /* Release FCP work queue */
5986         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
5987                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_qidx]);
5988         kfree(phba->sli4_hba.fcp_wq);
5989         phba->sli4_hba.fcp_wq = NULL;
5990
5991         /* Release unsolicited receive queue */
5992         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
5993         phba->sli4_hba.hdr_rq = NULL;
5994         lpfc_sli4_queue_free(phba->sli4_hba.dat_rq);
5995         phba->sli4_hba.dat_rq = NULL;
5996
5997         /* Release ELS complete queue */
5998         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
5999         phba->sli4_hba.els_cq = NULL;
6000
6001         /* Release mailbox command complete queue */
6002         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6003         phba->sli4_hba.mbx_cq = NULL;
6004
6005         /* Release FCP response complete queue */
6006         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6007                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_qidx]);
6008         kfree(phba->sli4_hba.fcp_cq);
6009         phba->sli4_hba.fcp_cq = NULL;
6010
6011         /* Release fast-path event queue */
6012         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6013                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
6014         kfree(phba->sli4_hba.fp_eq);
6015         phba->sli4_hba.fp_eq = NULL;
6016
6017         /* Release slow-path event queue */
6018         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6019         phba->sli4_hba.sp_eq = NULL;
6020
6021         return;
6022 }
6023
6024 /**
6025  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
6026  * @phba: pointer to lpfc hba data structure.
6027  *
6028  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
6029  * operation.
6030  *
6031  * Return codes
6032  *      0 - successful
6033  *      ENOMEM - No availble memory
6034  *      EIO - The mailbox failed to complete successfully.
6035  **/
6036 int
6037 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
6038 {
6039         int rc = -ENOMEM;
6040         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6041         int fcp_cq_index = 0;
6042
6043         /*
6044          * Set up Event Queues (EQs)
6045          */
6046
6047         /* Set up slow-path event queue */
6048         if (!phba->sli4_hba.sp_eq) {
6049                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6050                                 "0520 Slow-path EQ not allocated\n");
6051                 goto out_error;
6052         }
6053         rc = lpfc_eq_create(phba, phba->sli4_hba.sp_eq,
6054                             LPFC_SP_DEF_IMAX);
6055         if (rc) {
6056                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6057                                 "0521 Failed setup of slow-path EQ: "
6058                                 "rc = 0x%x\n", rc);
6059                 goto out_error;
6060         }
6061         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6062                         "2583 Slow-path EQ setup: queue-id=%d\n",
6063                         phba->sli4_hba.sp_eq->queue_id);
6064
6065         /* Set up fast-path event queue */
6066         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6067                 if (!phba->sli4_hba.fp_eq[fcp_eqidx]) {
6068                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6069                                         "0522 Fast-path EQ (%d) not "
6070                                         "allocated\n", fcp_eqidx);
6071                         goto out_destroy_fp_eq;
6072                 }
6073                 rc = lpfc_eq_create(phba, phba->sli4_hba.fp_eq[fcp_eqidx],
6074                                     phba->cfg_fcp_imax);
6075                 if (rc) {
6076                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6077                                         "0523 Failed setup of fast-path EQ "
6078                                         "(%d), rc = 0x%x\n", fcp_eqidx, rc);
6079                         goto out_destroy_fp_eq;
6080                 }
6081                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6082                                 "2584 Fast-path EQ setup: "
6083                                 "queue[%d]-id=%d\n", fcp_eqidx,
6084                                 phba->sli4_hba.fp_eq[fcp_eqidx]->queue_id);
6085         }
6086
6087         /*
6088          * Set up Complete Queues (CQs)
6089          */
6090
6091         /* Set up slow-path MBOX Complete Queue as the first CQ */
6092         if (!phba->sli4_hba.mbx_cq) {
6093                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6094                                 "0528 Mailbox CQ not allocated\n");
6095                 goto out_destroy_fp_eq;
6096         }
6097         rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq, phba->sli4_hba.sp_eq,
6098                             LPFC_MCQ, LPFC_MBOX);
6099         if (rc) {
6100                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6101                                 "0529 Failed setup of slow-path mailbox CQ: "
6102                                 "rc = 0x%x\n", rc);
6103                 goto out_destroy_fp_eq;
6104         }
6105         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6106                         "2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n",
6107                         phba->sli4_hba.mbx_cq->queue_id,
6108                         phba->sli4_hba.sp_eq->queue_id);
6109
6110         /* Set up slow-path ELS Complete Queue */
6111         if (!phba->sli4_hba.els_cq) {
6112                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6113                                 "0530 ELS CQ not allocated\n");
6114                 goto out_destroy_mbx_cq;
6115         }
6116         rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq, phba->sli4_hba.sp_eq,
6117                             LPFC_WCQ, LPFC_ELS);
6118         if (rc) {
6119                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6120                                 "0531 Failed setup of slow-path ELS CQ: "
6121                                 "rc = 0x%x\n", rc);
6122                 goto out_destroy_mbx_cq;
6123         }
6124         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6125                         "2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n",
6126                         phba->sli4_hba.els_cq->queue_id,
6127                         phba->sli4_hba.sp_eq->queue_id);
6128
6129         /* Set up fast-path FCP Response Complete Queue */
6130         for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_eq_count; fcp_cqidx++) {
6131                 if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) {
6132                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6133                                         "0526 Fast-path FCP CQ (%d) not "
6134                                         "allocated\n", fcp_cqidx);
6135                         goto out_destroy_fcp_cq;
6136                 }
6137                 rc = lpfc_cq_create(phba, phba->sli4_hba.fcp_cq[fcp_cqidx],
6138                                     phba->sli4_hba.fp_eq[fcp_cqidx],
6139                                     LPFC_WCQ, LPFC_FCP);
6140                 if (rc) {
6141                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6142                                         "0527 Failed setup of fast-path FCP "
6143                                         "CQ (%d), rc = 0x%x\n", fcp_cqidx, rc);
6144                         goto out_destroy_fcp_cq;
6145                 }
6146                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6147                                 "2588 FCP CQ setup: cq[%d]-id=%d, "
6148                                 "parent eq[%d]-id=%d\n",
6149                                 fcp_cqidx,
6150                                 phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id,
6151                                 fcp_cqidx,
6152                                 phba->sli4_hba.fp_eq[fcp_cqidx]->queue_id);
6153         }
6154
6155         /*
6156          * Set up all the Work Queues (WQs)
6157          */
6158
6159         /* Set up Mailbox Command Queue */
6160         if (!phba->sli4_hba.mbx_wq) {
6161                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6162                                 "0538 Slow-path MQ not allocated\n");
6163                 goto out_destroy_fcp_cq;
6164         }
6165         rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq,
6166                             phba->sli4_hba.mbx_cq, LPFC_MBOX);
6167         if (rc) {
6168                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6169                                 "0539 Failed setup of slow-path MQ: "
6170                                 "rc = 0x%x\n", rc);
6171                 goto out_destroy_fcp_cq;
6172         }
6173         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6174                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
6175                         phba->sli4_hba.mbx_wq->queue_id,
6176                         phba->sli4_hba.mbx_cq->queue_id);
6177
6178         /* Set up slow-path ELS Work Queue */
6179         if (!phba->sli4_hba.els_wq) {
6180                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6181                                 "0536 Slow-path ELS WQ not allocated\n");
6182                 goto out_destroy_mbx_wq;
6183         }
6184         rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq,
6185                             phba->sli4_hba.els_cq, LPFC_ELS);
6186         if (rc) {
6187                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6188                                 "0537 Failed setup of slow-path ELS WQ: "
6189                                 "rc = 0x%x\n", rc);
6190                 goto out_destroy_mbx_wq;
6191         }
6192         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6193                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
6194                         phba->sli4_hba.els_wq->queue_id,
6195                         phba->sli4_hba.els_cq->queue_id);
6196
6197         /* Set up fast-path FCP Work Queue */
6198         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6199                 if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) {
6200                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6201                                         "0534 Fast-path FCP WQ (%d) not "
6202                                         "allocated\n", fcp_wqidx);
6203                         goto out_destroy_fcp_wq;
6204                 }
6205                 rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx],
6206                                     phba->sli4_hba.fcp_cq[fcp_cq_index],
6207                                     LPFC_FCP);
6208                 if (rc) {
6209                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6210                                         "0535 Failed setup of fast-path FCP "
6211                                         "WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
6212                         goto out_destroy_fcp_wq;
6213                 }
6214                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6215                                 "2591 FCP WQ setup: wq[%d]-id=%d, "
6216                                 "parent cq[%d]-id=%d\n",
6217                                 fcp_wqidx,
6218                                 phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id,
6219                                 fcp_cq_index,
6220                                 phba->sli4_hba.fcp_cq[fcp_cq_index]->queue_id);
6221                 /* Round robin FCP Work Queue's Completion Queue assignment */
6222                 fcp_cq_index = ((fcp_cq_index + 1) % phba->cfg_fcp_eq_count);
6223         }
6224
6225         /*
6226          * Create Receive Queue (RQ)
6227          */
6228         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
6229                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6230                                 "0540 Receive Queue not allocated\n");
6231                 goto out_destroy_fcp_wq;
6232         }
6233         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
6234                             phba->sli4_hba.els_cq, LPFC_USOL);
6235         if (rc) {
6236                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6237                                 "0541 Failed setup of Receive Queue: "
6238                                 "rc = 0x%x\n", rc);
6239                 goto out_destroy_fcp_wq;
6240         }
6241         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6242                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
6243                         "parent cq-id=%d\n",
6244                         phba->sli4_hba.hdr_rq->queue_id,
6245                         phba->sli4_hba.dat_rq->queue_id,
6246                         phba->sli4_hba.els_cq->queue_id);
6247         return 0;
6248
6249 out_destroy_fcp_wq:
6250         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--)
6251                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]);
6252         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6253 out_destroy_mbx_wq:
6254         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6255 out_destroy_fcp_cq:
6256         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--)
6257                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]);
6258         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6259 out_destroy_mbx_cq:
6260         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6261 out_destroy_fp_eq:
6262         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--)
6263                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_eqidx]);
6264         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6265 out_error:
6266         return rc;
6267 }
6268
6269 /**
6270  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
6271  * @phba: pointer to lpfc hba data structure.
6272  *
6273  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
6274  * operation.
6275  *
6276  * Return codes
6277  *      0 - successful
6278  *      ENOMEM - No availble memory
6279  *      EIO - The mailbox failed to complete successfully.
6280  **/
6281 void
6282 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
6283 {
6284         int fcp_qidx;
6285
6286         /* Unset mailbox command work queue */
6287         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6288         /* Unset ELS work queue */
6289         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6290         /* Unset unsolicited receive queue */
6291         lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq);
6292         /* Unset FCP work queue */
6293         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6294                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]);
6295         /* Unset mailbox command complete queue */
6296         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6297         /* Unset ELS complete queue */
6298         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6299         /* Unset FCP response complete queue */
6300         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6301                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]);
6302         /* Unset fast-path event queue */
6303         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6304                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_qidx]);
6305         /* Unset slow-path event queue */
6306         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6307 }
6308
6309 /**
6310  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
6311  * @phba: pointer to lpfc hba data structure.
6312  *
6313  * This routine is invoked to allocate and set up a pool of completion queue
6314  * events. The body of the completion queue event is a completion queue entry
6315  * CQE. For now, this pool is used for the interrupt service routine to queue
6316  * the following HBA completion queue events for the worker thread to process:
6317  *   - Mailbox asynchronous events
6318  *   - Receive queue completion unsolicited events
6319  * Later, this can be used for all the slow-path events.
6320  *
6321  * Return codes
6322  *      0 - successful
6323  *      -ENOMEM - No availble memory
6324  **/
6325 static int
6326 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
6327 {
6328         struct lpfc_cq_event *cq_event;
6329         int i;
6330
6331         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
6332                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
6333                 if (!cq_event)
6334                         goto out_pool_create_fail;
6335                 list_add_tail(&cq_event->list,
6336                               &phba->sli4_hba.sp_cqe_event_pool);
6337         }
6338         return 0;
6339
6340 out_pool_create_fail:
6341         lpfc_sli4_cq_event_pool_destroy(phba);
6342         return -ENOMEM;
6343 }
6344
6345 /**
6346  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
6347  * @phba: pointer to lpfc hba data structure.
6348  *
6349  * This routine is invoked to free the pool of completion queue events at
6350  * driver unload time. Note that, it is the responsibility of the driver
6351  * cleanup routine to free all the outstanding completion-queue events
6352  * allocated from this pool back into the pool before invoking this routine
6353  * to destroy the pool.
6354  **/
6355 static void
6356 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
6357 {
6358         struct lpfc_cq_event *cq_event, *next_cq_event;
6359
6360         list_for_each_entry_safe(cq_event, next_cq_event,
6361                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
6362                 list_del(&cq_event->list);
6363                 kfree(cq_event);
6364         }
6365 }
6366
6367 /**
6368  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6369  * @phba: pointer to lpfc hba data structure.
6370  *
6371  * This routine is the lock free version of the API invoked to allocate a
6372  * completion-queue event from the free pool.
6373  *
6374  * Return: Pointer to the newly allocated completion-queue event if successful
6375  *         NULL otherwise.
6376  **/
6377 struct lpfc_cq_event *
6378 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6379 {
6380         struct lpfc_cq_event *cq_event = NULL;
6381
6382         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
6383                          struct lpfc_cq_event, list);
6384         return cq_event;
6385 }
6386
6387 /**
6388  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6389  * @phba: pointer to lpfc hba data structure.
6390  *
6391  * This routine is the lock version of the API invoked to allocate a
6392  * completion-queue event from the free pool.
6393  *
6394  * Return: Pointer to the newly allocated completion-queue event if successful
6395  *         NULL otherwise.
6396  **/
6397 struct lpfc_cq_event *
6398 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6399 {
6400         struct lpfc_cq_event *cq_event;
6401         unsigned long iflags;
6402
6403         spin_lock_irqsave(&phba->hbalock, iflags);
6404         cq_event = __lpfc_sli4_cq_event_alloc(phba);
6405         spin_unlock_irqrestore(&phba->hbalock, iflags);
6406         return cq_event;
6407 }
6408
6409 /**
6410  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6411  * @phba: pointer to lpfc hba data structure.
6412  * @cq_event: pointer to the completion queue event to be freed.
6413  *
6414  * This routine is the lock free version of the API invoked to release a
6415  * completion-queue event back into the free pool.
6416  **/
6417 void
6418 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6419                              struct lpfc_cq_event *cq_event)
6420 {
6421         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
6422 }
6423
6424 /**
6425  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6426  * @phba: pointer to lpfc hba data structure.
6427  * @cq_event: pointer to the completion queue event to be freed.
6428  *
6429  * This routine is the lock version of the API invoked to release a
6430  * completion-queue event back into the free pool.
6431  **/
6432 void
6433 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6434                            struct lpfc_cq_event *cq_event)
6435 {
6436         unsigned long iflags;
6437         spin_lock_irqsave(&phba->hbalock, iflags);
6438         __lpfc_sli4_cq_event_release(phba, cq_event);
6439         spin_unlock_irqrestore(&phba->hbalock, iflags);
6440 }
6441
6442 /**
6443  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
6444  * @phba: pointer to lpfc hba data structure.
6445  *
6446  * This routine is to free all the pending completion-queue events to the
6447  * back into the free pool for device reset.
6448  **/
6449 static void
6450 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
6451 {
6452         LIST_HEAD(cqelist);
6453         struct lpfc_cq_event *cqe;
6454         unsigned long iflags;
6455
6456         /* Retrieve all the pending WCQEs from pending WCQE lists */
6457         spin_lock_irqsave(&phba->hbalock, iflags);
6458         /* Pending FCP XRI abort events */
6459         list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
6460                          &cqelist);
6461         /* Pending ELS XRI abort events */
6462         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
6463                          &cqelist);
6464         /* Pending asynnc events */
6465         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
6466                          &cqelist);
6467         spin_unlock_irqrestore(&phba->hbalock, iflags);
6468
6469         while (!list_empty(&cqelist)) {
6470                 list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
6471                 lpfc_sli4_cq_event_release(phba, cqe);
6472         }
6473 }
6474
6475 /**
6476  * lpfc_pci_function_reset - Reset pci function.
6477  * @phba: pointer to lpfc hba data structure.
6478  *
6479  * This routine is invoked to request a PCI function reset. It will destroys
6480  * all resources assigned to the PCI function which originates this request.
6481  *
6482  * Return codes
6483  *      0 - successful
6484  *      ENOMEM - No availble memory
6485  *      EIO - The mailbox failed to complete successfully.
6486  **/
6487 int
6488 lpfc_pci_function_reset(struct lpfc_hba *phba)
6489 {
6490         LPFC_MBOXQ_t *mboxq;
6491         uint32_t rc = 0;
6492         uint32_t shdr_status, shdr_add_status;
6493         union lpfc_sli4_cfg_shdr *shdr;
6494
6495         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6496         if (!mboxq) {
6497                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6498                                 "0494 Unable to allocate memory for issuing "
6499                                 "SLI_FUNCTION_RESET mailbox command\n");
6500                 return -ENOMEM;
6501         }
6502
6503         /* Set up PCI function reset SLI4_CONFIG mailbox-ioctl command */
6504         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
6505                          LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
6506                          LPFC_SLI4_MBX_EMBED);
6507         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6508         shdr = (union lpfc_sli4_cfg_shdr *)
6509                 &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
6510         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6511         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
6512         if (rc != MBX_TIMEOUT)
6513                 mempool_free(mboxq, phba->mbox_mem_pool);
6514         if (shdr_status || shdr_add_status || rc) {
6515                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6516                                 "0495 SLI_FUNCTION_RESET mailbox failed with "
6517                                 "status x%x add_status x%x, mbx status x%x\n",
6518                                 shdr_status, shdr_add_status, rc);
6519                 rc = -ENXIO;
6520         }
6521         return rc;
6522 }
6523
6524 /**
6525  * lpfc_sli4_send_nop_mbox_cmds - Send sli-4 nop mailbox commands
6526  * @phba: pointer to lpfc hba data structure.
6527  * @cnt: number of nop mailbox commands to send.
6528  *
6529  * This routine is invoked to send a number @cnt of NOP mailbox command and
6530  * wait for each command to complete.
6531  *
6532  * Return: the number of NOP mailbox command completed.
6533  **/
6534 static int
6535 lpfc_sli4_send_nop_mbox_cmds(struct lpfc_hba *phba, uint32_t cnt)
6536 {
6537         LPFC_MBOXQ_t *mboxq;
6538         int length, cmdsent;
6539         uint32_t mbox_tmo;
6540         uint32_t rc = 0;
6541         uint32_t shdr_status, shdr_add_status;
6542         union lpfc_sli4_cfg_shdr *shdr;
6543
6544         if (cnt == 0) {
6545                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6546                                 "2518 Requested to send 0 NOP mailbox cmd\n");
6547                 return cnt;
6548         }
6549
6550         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6551         if (!mboxq) {
6552                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6553                                 "2519 Unable to allocate memory for issuing "
6554                                 "NOP mailbox command\n");
6555                 return 0;
6556         }
6557
6558         /* Set up NOP SLI4_CONFIG mailbox-ioctl command */
6559         length = (sizeof(struct lpfc_mbx_nop) -
6560                   sizeof(struct lpfc_sli4_cfg_mhdr));
6561         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
6562                          LPFC_MBOX_OPCODE_NOP, length, LPFC_SLI4_MBX_EMBED);
6563
6564         mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
6565         for (cmdsent = 0; cmdsent < cnt; cmdsent++) {
6566                 if (!phba->sli4_hba.intr_enable)
6567                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6568                 else
6569                         rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
6570                 if (rc == MBX_TIMEOUT)
6571                         break;
6572                 /* Check return status */
6573                 shdr = (union lpfc_sli4_cfg_shdr *)
6574                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
6575                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6576                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
6577                                          &shdr->response);
6578                 if (shdr_status || shdr_add_status || rc) {
6579                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6580                                         "2520 NOP mailbox command failed "
6581                                         "status x%x add_status x%x mbx "
6582                                         "status x%x\n", shdr_status,
6583                                         shdr_add_status, rc);
6584                         break;
6585                 }
6586         }
6587
6588         if (rc != MBX_TIMEOUT)
6589                 mempool_free(mboxq, phba->mbox_mem_pool);
6590
6591         return cmdsent;
6592 }
6593
6594 /**
6595  * lpfc_sli4_fcfi_unreg - Unregister fcfi to device
6596  * @phba: pointer to lpfc hba data structure.
6597  * @fcfi: fcf index.
6598  *
6599  * This routine is invoked to unregister a FCFI from device.
6600  **/
6601 void
6602 lpfc_sli4_fcfi_unreg(struct lpfc_hba *phba, uint16_t fcfi)
6603 {
6604         LPFC_MBOXQ_t *mbox;
6605         uint32_t mbox_tmo;
6606         int rc;
6607         unsigned long flags;
6608
6609         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6610
6611         if (!mbox)
6612                 return;
6613
6614         lpfc_unreg_fcfi(mbox, fcfi);
6615
6616         if (!phba->sli4_hba.intr_enable)
6617                 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
6618         else {
6619                 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
6620                 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
6621         }
6622         if (rc != MBX_TIMEOUT)
6623                 mempool_free(mbox, phba->mbox_mem_pool);
6624         if (rc != MBX_SUCCESS)
6625                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6626                                 "2517 Unregister FCFI command failed "
6627                                 "status %d, mbxStatus x%x\n", rc,
6628                                 bf_get(lpfc_mqe_status, &mbox->u.mqe));
6629         else {
6630                 spin_lock_irqsave(&phba->hbalock, flags);
6631                 /* Mark the FCFI is no longer registered */
6632                 phba->fcf.fcf_flag &=
6633                         ~(FCF_AVAILABLE | FCF_REGISTERED | FCF_SCAN_DONE);
6634                 spin_unlock_irqrestore(&phba->hbalock, flags);
6635         }
6636 }
6637
6638 /**
6639  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
6640  * @phba: pointer to lpfc hba data structure.
6641  *
6642  * This routine is invoked to set up the PCI device memory space for device
6643  * with SLI-4 interface spec.
6644  *
6645  * Return codes
6646  *      0 - successful
6647  *      other values - error
6648  **/
6649 static int
6650 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
6651 {
6652         struct pci_dev *pdev;
6653         unsigned long bar0map_len, bar1map_len, bar2map_len;
6654         int error = -ENODEV;
6655
6656         /* Obtain PCI device reference */
6657         if (!phba->pcidev)
6658                 return error;
6659         else
6660                 pdev = phba->pcidev;
6661
6662         /* Set the device DMA mask size */
6663         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
6664          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
6665                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
6666                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
6667                         return error;
6668                 }
6669         }
6670
6671         /* Get the bus address of SLI4 device Bar0, Bar1, and Bar2 and the
6672          * number of bytes required by each mapping. They are actually
6673          * mapping to the PCI BAR regions 0 or 1, 2, and 4 by the SLI4 device.
6674          */
6675         if (pci_resource_start(pdev, 0)) {
6676                 phba->pci_bar0_map = pci_resource_start(pdev, 0);
6677                 bar0map_len = pci_resource_len(pdev, 0);
6678         } else {
6679                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
6680                 bar0map_len = pci_resource_len(pdev, 1);
6681         }
6682         phba->pci_bar1_map = pci_resource_start(pdev, 2);
6683         bar1map_len = pci_resource_len(pdev, 2);
6684
6685         phba->pci_bar2_map = pci_resource_start(pdev, 4);
6686         bar2map_len = pci_resource_len(pdev, 4);
6687
6688         /* Map SLI4 PCI Config Space Register base to a kernel virtual addr */
6689         phba->sli4_hba.conf_regs_memmap_p =
6690                                 ioremap(phba->pci_bar0_map, bar0map_len);
6691         if (!phba->sli4_hba.conf_regs_memmap_p) {
6692                 dev_printk(KERN_ERR, &pdev->dev,
6693                            "ioremap failed for SLI4 PCI config registers.\n");
6694                 goto out;
6695         }
6696
6697         /* Map SLI4 HBA Control Register base to a kernel virtual address. */
6698         phba->sli4_hba.ctrl_regs_memmap_p =
6699                                 ioremap(phba->pci_bar1_map, bar1map_len);
6700         if (!phba->sli4_hba.ctrl_regs_memmap_p) {
6701                 dev_printk(KERN_ERR, &pdev->dev,
6702                            "ioremap failed for SLI4 HBA control registers.\n");
6703                 goto out_iounmap_conf;
6704         }
6705
6706         /* Map SLI4 HBA Doorbell Register base to a kernel virtual address. */
6707         phba->sli4_hba.drbl_regs_memmap_p =
6708                                 ioremap(phba->pci_bar2_map, bar2map_len);
6709         if (!phba->sli4_hba.drbl_regs_memmap_p) {
6710                 dev_printk(KERN_ERR, &pdev->dev,
6711                            "ioremap failed for SLI4 HBA doorbell registers.\n");
6712                 goto out_iounmap_ctrl;
6713         }
6714
6715         /* Set up BAR0 PCI config space register memory map */
6716         lpfc_sli4_bar0_register_memmap(phba);
6717
6718         /* Set up BAR1 register memory map */
6719         lpfc_sli4_bar1_register_memmap(phba);
6720
6721         /* Set up BAR2 register memory map */
6722         error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
6723         if (error)
6724                 goto out_iounmap_all;
6725
6726         return 0;
6727
6728 out_iounmap_all:
6729         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
6730 out_iounmap_ctrl:
6731         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
6732 out_iounmap_conf:
6733         iounmap(phba->sli4_hba.conf_regs_memmap_p);
6734 out:
6735         return error;
6736 }
6737
6738 /**
6739  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
6740  * @phba: pointer to lpfc hba data structure.
6741  *
6742  * This routine is invoked to unset the PCI device memory space for device
6743  * with SLI-4 interface spec.
6744  **/
6745 static void
6746 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
6747 {
6748         struct pci_dev *pdev;
6749
6750         /* Obtain PCI device reference */
6751         if (!phba->pcidev)
6752                 return;
6753         else
6754                 pdev = phba->pcidev;
6755
6756         /* Free coherent DMA memory allocated */
6757
6758         /* Unmap I/O memory space */
6759         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
6760         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
6761         iounmap(phba->sli4_hba.conf_regs_memmap_p);
6762
6763         return;
6764 }
6765
6766 /**
6767  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
6768  * @phba: pointer to lpfc hba data structure.
6769  *
6770  * This routine is invoked to enable the MSI-X interrupt vectors to device
6771  * with SLI-3 interface specs. The kernel function pci_enable_msix() is
6772  * called to enable the MSI-X vectors. Note that pci_enable_msix(), once
6773  * invoked, enables either all or nothing, depending on the current
6774  * availability of PCI vector resources. The device driver is responsible
6775  * for calling the individual request_irq() to register each MSI-X vector
6776  * with a interrupt handler, which is done in this function. Note that
6777  * later when device is unloading, the driver should always call free_irq()
6778  * on all MSI-X vectors it has done request_irq() on before calling
6779  * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
6780  * will be left with MSI-X enabled and leaks its vectors.
6781  *
6782  * Return codes
6783  *   0 - successful
6784  *   other values - error
6785  **/
6786 static int
6787 lpfc_sli_enable_msix(struct lpfc_hba *phba)
6788 {
6789         int rc, i;
6790         LPFC_MBOXQ_t *pmb;
6791
6792         /* Set up MSI-X multi-message vectors */
6793         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
6794                 phba->msix_entries[i].entry = i;
6795
6796         /* Configure MSI-X capability structure */
6797         rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
6798                                 ARRAY_SIZE(phba->msix_entries));
6799         if (rc) {
6800                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6801                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
6802                 goto msi_fail_out;
6803         }
6804         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
6805                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6806                                 "0477 MSI-X entry[%d]: vector=x%x "
6807                                 "message=%d\n", i,
6808                                 phba->msix_entries[i].vector,
6809                                 phba->msix_entries[i].entry);
6810         /*
6811          * Assign MSI-X vectors to interrupt handlers
6812          */
6813
6814         /* vector-0 is associated to slow-path handler */
6815         rc = request_irq(phba->msix_entries[0].vector,
6816                          &lpfc_sli_sp_intr_handler, IRQF_SHARED,
6817                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
6818         if (rc) {
6819                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6820                                 "0421 MSI-X slow-path request_irq failed "
6821                                 "(%d)\n", rc);
6822                 goto msi_fail_out;
6823         }
6824
6825         /* vector-1 is associated to fast-path handler */
6826         rc = request_irq(phba->msix_entries[1].vector,
6827                          &lpfc_sli_fp_intr_handler, IRQF_SHARED,
6828                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
6829
6830         if (rc) {
6831                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6832                                 "0429 MSI-X fast-path request_irq failed "
6833                                 "(%d)\n", rc);
6834                 goto irq_fail_out;
6835         }
6836
6837         /*
6838          * Configure HBA MSI-X attention conditions to messages
6839          */
6840         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
6841
6842         if (!pmb) {
6843                 rc = -ENOMEM;
6844                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6845                                 "0474 Unable to allocate memory for issuing "
6846                                 "MBOX_CONFIG_MSI command\n");
6847                 goto mem_fail_out;
6848         }
6849         rc = lpfc_config_msi(phba, pmb);
6850         if (rc)
6851                 goto mbx_fail_out;
6852         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
6853         if (rc != MBX_SUCCESS) {
6854                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
6855                                 "0351 Config MSI mailbox command failed, "
6856                                 "mbxCmd x%x, mbxStatus x%x\n",
6857                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
6858                 goto mbx_fail_out;
6859         }
6860
6861         /* Free memory allocated for mailbox command */
6862         mempool_free(pmb, phba->mbox_mem_pool);
6863         return rc;
6864
6865 mbx_fail_out:
6866         /* Free memory allocated for mailbox command */
6867         mempool_free(pmb, phba->mbox_mem_pool);
6868
6869 mem_fail_out:
6870         /* free the irq already requested */
6871         free_irq(phba->msix_entries[1].vector, phba);
6872
6873 irq_fail_out:
6874         /* free the irq already requested */
6875         free_irq(phba->msix_entries[0].vector, phba);
6876
6877 msi_fail_out:
6878         /* Unconfigure MSI-X capability structure */
6879         pci_disable_msix(phba->pcidev);
6880         return rc;
6881 }
6882
6883 /**
6884  * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device.
6885  * @phba: pointer to lpfc hba data structure.
6886  *
6887  * This routine is invoked to release the MSI-X vectors and then disable the
6888  * MSI-X interrupt mode to device with SLI-3 interface spec.
6889  **/
6890 static void
6891 lpfc_sli_disable_msix(struct lpfc_hba *phba)
6892 {
6893         int i;
6894
6895         /* Free up MSI-X multi-message vectors */
6896         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
6897                 free_irq(phba->msix_entries[i].vector, phba);
6898         /* Disable MSI-X */
6899         pci_disable_msix(phba->pcidev);
6900
6901         return;
6902 }
6903
6904 /**
6905  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
6906  * @phba: pointer to lpfc hba data structure.
6907  *
6908  * This routine is invoked to enable the MSI interrupt mode to device with
6909  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
6910  * enable the MSI vector. The device driver is responsible for calling the
6911  * request_irq() to register MSI vector with a interrupt the handler, which
6912  * is done in this function.
6913  *
6914  * Return codes
6915  *      0 - successful
6916  *      other values - error
6917  */
6918 static int
6919 lpfc_sli_enable_msi(struct lpfc_hba *phba)
6920 {
6921         int rc;
6922
6923         rc = pci_enable_msi(phba->pcidev);
6924         if (!rc)
6925                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6926                                 "0462 PCI enable MSI mode success.\n");
6927         else {
6928                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6929                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
6930                 return rc;
6931         }
6932
6933         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
6934                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
6935         if (rc) {
6936                 pci_disable_msi(phba->pcidev);
6937                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6938                                 "0478 MSI request_irq failed (%d)\n", rc);
6939         }
6940         return rc;
6941 }
6942
6943 /**
6944  * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device.
6945  * @phba: pointer to lpfc hba data structure.
6946  *
6947  * This routine is invoked to disable the MSI interrupt mode to device with
6948  * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has
6949  * done request_irq() on before calling pci_disable_msi(). Failure to do so
6950  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
6951  * its vector.
6952  */
6953 static void
6954 lpfc_sli_disable_msi(struct lpfc_hba *phba)
6955 {
6956         free_irq(phba->pcidev->irq, phba);
6957         pci_disable_msi(phba->pcidev);
6958         return;
6959 }
6960
6961 /**
6962  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
6963  * @phba: pointer to lpfc hba data structure.
6964  *
6965  * This routine is invoked to enable device interrupt and associate driver's
6966  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
6967  * spec. Depends on the interrupt mode configured to the driver, the driver
6968  * will try to fallback from the configured interrupt mode to an interrupt
6969  * mode which is supported by the platform, kernel, and device in the order
6970  * of:
6971  * MSI-X -> MSI -> IRQ.
6972  *
6973  * Return codes
6974  *   0 - successful
6975  *   other values - error
6976  **/
6977 static uint32_t
6978 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
6979 {
6980         uint32_t intr_mode = LPFC_INTR_ERROR;
6981         int retval;
6982
6983         if (cfg_mode == 2) {
6984                 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
6985                 retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
6986                 if (!retval) {
6987                         /* Now, try to enable MSI-X interrupt mode */
6988                         retval = lpfc_sli_enable_msix(phba);
6989                         if (!retval) {
6990                                 /* Indicate initialization to MSI-X mode */
6991                                 phba->intr_type = MSIX;
6992                                 intr_mode = 2;
6993                         }
6994                 }
6995         }
6996
6997         /* Fallback to MSI if MSI-X initialization failed */
6998         if (cfg_mode >= 1 && phba->intr_type == NONE) {
6999                 retval = lpfc_sli_enable_msi(phba);
7000                 if (!retval) {
7001                         /* Indicate initialization to MSI mode */
7002                         phba->intr_type = MSI;
7003                         intr_mode = 1;
7004                 }
7005         }
7006
7007         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7008         if (phba->intr_type == NONE) {
7009                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7010                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7011                 if (!retval) {
7012                         /* Indicate initialization to INTx mode */
7013                         phba->intr_type = INTx;
7014                         intr_mode = 0;
7015                 }
7016         }
7017         return intr_mode;
7018 }
7019
7020 /**
7021  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
7022  * @phba: pointer to lpfc hba data structure.
7023  *
7024  * This routine is invoked to disable device interrupt and disassociate the
7025  * driver's interrupt handler(s) from interrupt vector(s) to device with
7026  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
7027  * release the interrupt vector(s) for the message signaled interrupt.
7028  **/
7029 static void
7030 lpfc_sli_disable_intr(struct lpfc_hba *phba)
7031 {
7032         /* Disable the currently initialized interrupt mode */
7033         if (phba->intr_type == MSIX)
7034                 lpfc_sli_disable_msix(phba);
7035         else if (phba->intr_type == MSI)
7036                 lpfc_sli_disable_msi(phba);
7037         else if (phba->intr_type == INTx)
7038                 free_irq(phba->pcidev->irq, phba);
7039
7040         /* Reset interrupt management states */
7041         phba->intr_type = NONE;
7042         phba->sli.slistat.sli_intr = 0;
7043
7044         return;
7045 }
7046
7047 /**
7048  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
7049  * @phba: pointer to lpfc hba data structure.
7050  *
7051  * This routine is invoked to enable the MSI-X interrupt vectors to device
7052  * with SLI-4 interface spec. The kernel function pci_enable_msix() is called
7053  * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked,
7054  * enables either all or nothing, depending on the current availability of
7055  * PCI vector resources. The device driver is responsible for calling the
7056  * individual request_irq() to register each MSI-X vector with a interrupt
7057  * handler, which is done in this function. Note that later when device is
7058  * unloading, the driver should always call free_irq() on all MSI-X vectors
7059  * it has done request_irq() on before calling pci_disable_msix(). Failure
7060  * to do so results in a BUG_ON() and a device will be left with MSI-X
7061  * enabled and leaks its vectors.
7062  *
7063  * Return codes
7064  * 0 - successful
7065  * other values - error
7066  **/
7067 static int
7068 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
7069 {
7070         int vectors, rc, index;
7071
7072         /* Set up MSI-X multi-message vectors */
7073         for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
7074                 phba->sli4_hba.msix_entries[index].entry = index;
7075
7076         /* Configure MSI-X capability structure */
7077         vectors = phba->sli4_hba.cfg_eqn;
7078 enable_msix_vectors:
7079         rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
7080                              vectors);
7081         if (rc > 1) {
7082                 vectors = rc;
7083                 goto enable_msix_vectors;
7084         } else if (rc) {
7085                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7086                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
7087                 goto msi_fail_out;
7088         }
7089
7090         /* Log MSI-X vector assignment */
7091         for (index = 0; index < vectors; index++)
7092                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7093                                 "0489 MSI-X entry[%d]: vector=x%x "
7094                                 "message=%d\n", index,
7095                                 phba->sli4_hba.msix_entries[index].vector,
7096                                 phba->sli4_hba.msix_entries[index].entry);
7097         /*
7098          * Assign MSI-X vectors to interrupt handlers
7099          */
7100
7101         /* The first vector must associated to slow-path handler for MQ */
7102         rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7103                          &lpfc_sli4_sp_intr_handler, IRQF_SHARED,
7104                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
7105         if (rc) {
7106                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7107                                 "0485 MSI-X slow-path request_irq failed "
7108                                 "(%d)\n", rc);
7109                 goto msi_fail_out;
7110         }
7111
7112         /* The rest of the vector(s) are associated to fast-path handler(s) */
7113         for (index = 1; index < vectors; index++) {
7114                 phba->sli4_hba.fcp_eq_hdl[index - 1].idx = index - 1;
7115                 phba->sli4_hba.fcp_eq_hdl[index - 1].phba = phba;
7116                 rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
7117                                  &lpfc_sli4_fp_intr_handler, IRQF_SHARED,
7118                                  LPFC_FP_DRIVER_HANDLER_NAME,
7119                                  &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7120                 if (rc) {
7121                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7122                                         "0486 MSI-X fast-path (%d) "
7123                                         "request_irq failed (%d)\n", index, rc);
7124                         goto cfg_fail_out;
7125                 }
7126         }
7127         phba->sli4_hba.msix_vec_nr = vectors;
7128
7129         return rc;
7130
7131 cfg_fail_out:
7132         /* free the irq already requested */
7133         for (--index; index >= 1; index--)
7134                 free_irq(phba->sli4_hba.msix_entries[index - 1].vector,
7135                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7136
7137         /* free the irq already requested */
7138         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7139
7140 msi_fail_out:
7141         /* Unconfigure MSI-X capability structure */
7142         pci_disable_msix(phba->pcidev);
7143         return rc;
7144 }
7145
7146 /**
7147  * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device
7148  * @phba: pointer to lpfc hba data structure.
7149  *
7150  * This routine is invoked to release the MSI-X vectors and then disable the
7151  * MSI-X interrupt mode to device with SLI-4 interface spec.
7152  **/
7153 static void
7154 lpfc_sli4_disable_msix(struct lpfc_hba *phba)
7155 {
7156         int index;
7157
7158         /* Free up MSI-X multi-message vectors */
7159         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7160
7161         for (index = 1; index < phba->sli4_hba.msix_vec_nr; index++)
7162                 free_irq(phba->sli4_hba.msix_entries[index].vector,
7163                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7164
7165         /* Disable MSI-X */
7166         pci_disable_msix(phba->pcidev);
7167
7168         return;
7169 }
7170
7171 /**
7172  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
7173  * @phba: pointer to lpfc hba data structure.
7174  *
7175  * This routine is invoked to enable the MSI interrupt mode to device with
7176  * SLI-4 interface spec. The kernel function pci_enable_msi() is called
7177  * to enable the MSI vector. The device driver is responsible for calling
7178  * the request_irq() to register MSI vector with a interrupt the handler,
7179  * which is done in this function.
7180  *
7181  * Return codes
7182  *      0 - successful
7183  *      other values - error
7184  **/
7185 static int
7186 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
7187 {
7188         int rc, index;
7189
7190         rc = pci_enable_msi(phba->pcidev);
7191         if (!rc)
7192                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7193                                 "0487 PCI enable MSI mode success.\n");
7194         else {
7195                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7196                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
7197                 return rc;
7198         }
7199
7200         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7201                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7202         if (rc) {
7203                 pci_disable_msi(phba->pcidev);
7204                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7205                                 "0490 MSI request_irq failed (%d)\n", rc);
7206                 return rc;
7207         }
7208
7209         for (index = 0; index < phba->cfg_fcp_eq_count; index++) {
7210                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7211                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7212         }
7213
7214         return 0;
7215 }
7216
7217 /**
7218  * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device
7219  * @phba: pointer to lpfc hba data structure.
7220  *
7221  * This routine is invoked to disable the MSI interrupt mode to device with
7222  * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has
7223  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7224  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7225  * its vector.
7226  **/
7227 static void
7228 lpfc_sli4_disable_msi(struct lpfc_hba *phba)
7229 {
7230         free_irq(phba->pcidev->irq, phba);
7231         pci_disable_msi(phba->pcidev);
7232         return;
7233 }
7234
7235 /**
7236  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
7237  * @phba: pointer to lpfc hba data structure.
7238  *
7239  * This routine is invoked to enable device interrupt and associate driver's
7240  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
7241  * interface spec. Depends on the interrupt mode configured to the driver,
7242  * the driver will try to fallback from the configured interrupt mode to an
7243  * interrupt mode which is supported by the platform, kernel, and device in
7244  * the order of:
7245  * MSI-X -> MSI -> IRQ.
7246  *
7247  * Return codes
7248  *      0 - successful
7249  *      other values - error
7250  **/
7251 static uint32_t
7252 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7253 {
7254         uint32_t intr_mode = LPFC_INTR_ERROR;
7255         int retval, index;
7256
7257         if (cfg_mode == 2) {
7258                 /* Preparation before conf_msi mbox cmd */
7259                 retval = 0;
7260                 if (!retval) {
7261                         /* Now, try to enable MSI-X interrupt mode */
7262                         retval = lpfc_sli4_enable_msix(phba);
7263                         if (!retval) {
7264                                 /* Indicate initialization to MSI-X mode */
7265                                 phba->intr_type = MSIX;
7266                                 intr_mode = 2;
7267                         }
7268                 }
7269         }
7270
7271         /* Fallback to MSI if MSI-X initialization failed */
7272         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7273                 retval = lpfc_sli4_enable_msi(phba);
7274                 if (!retval) {
7275                         /* Indicate initialization to MSI mode */
7276                         phba->intr_type = MSI;
7277                         intr_mode = 1;
7278                 }
7279         }
7280
7281         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7282         if (phba->intr_type == NONE) {
7283                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7284                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7285                 if (!retval) {
7286                         /* Indicate initialization to INTx mode */
7287                         phba->intr_type = INTx;
7288                         intr_mode = 0;
7289                         for (index = 0; index < phba->cfg_fcp_eq_count;
7290                              index++) {
7291                                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7292                                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7293                         }
7294                 }
7295         }
7296         return intr_mode;
7297 }
7298
7299 /**
7300  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
7301  * @phba: pointer to lpfc hba data structure.
7302  *
7303  * This routine is invoked to disable device interrupt and disassociate
7304  * the driver's interrupt handler(s) from interrupt vector(s) to device
7305  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
7306  * will release the interrupt vector(s) for the message signaled interrupt.
7307  **/
7308 static void
7309 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
7310 {
7311         /* Disable the currently initialized interrupt mode */
7312         if (phba->intr_type == MSIX)
7313                 lpfc_sli4_disable_msix(phba);
7314         else if (phba->intr_type == MSI)
7315                 lpfc_sli4_disable_msi(phba);
7316         else if (phba->intr_type == INTx)
7317                 free_irq(phba->pcidev->irq, phba);
7318
7319         /* Reset interrupt management states */
7320         phba->intr_type = NONE;
7321         phba->sli.slistat.sli_intr = 0;
7322
7323         return;
7324 }
7325
7326 /**
7327  * lpfc_unset_hba - Unset SLI3 hba device initialization
7328  * @phba: pointer to lpfc hba data structure.
7329  *
7330  * This routine is invoked to unset the HBA device initialization steps to
7331  * a device with SLI-3 interface spec.
7332  **/
7333 static void
7334 lpfc_unset_hba(struct lpfc_hba *phba)
7335 {
7336         struct lpfc_vport *vport = phba->pport;
7337         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7338
7339         spin_lock_irq(shost->host_lock);
7340         vport->load_flag |= FC_UNLOADING;
7341         spin_unlock_irq(shost->host_lock);
7342
7343         lpfc_stop_hba_timers(phba);
7344
7345         phba->pport->work_port_events = 0;
7346
7347         lpfc_sli_hba_down(phba);
7348
7349         lpfc_sli_brdrestart(phba);
7350
7351         lpfc_sli_disable_intr(phba);
7352
7353         return;
7354 }
7355
7356 /**
7357  * lpfc_sli4_unset_hba - Unset SLI4 hba device initialization.
7358  * @phba: pointer to lpfc hba data structure.
7359  *
7360  * This routine is invoked to unset the HBA device initialization steps to
7361  * a device with SLI-4 interface spec.
7362  **/
7363 static void
7364 lpfc_sli4_unset_hba(struct lpfc_hba *phba)
7365 {
7366         struct lpfc_vport *vport = phba->pport;
7367         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7368
7369         spin_lock_irq(shost->host_lock);
7370         vport->load_flag |= FC_UNLOADING;
7371         spin_unlock_irq(shost->host_lock);
7372
7373         phba->pport->work_port_events = 0;
7374
7375         lpfc_sli4_hba_down(phba);
7376
7377         lpfc_sli4_disable_intr(phba);
7378
7379         return;
7380 }
7381
7382 /**
7383  * lpfc_sli4_hba_unset - Unset the fcoe hba
7384  * @phba: Pointer to HBA context object.
7385  *
7386  * This function is called in the SLI4 code path to reset the HBA's FCoE
7387  * function. The caller is not required to hold any lock. This routine
7388  * issues PCI function reset mailbox command to reset the FCoE function.
7389  * At the end of the function, it calls lpfc_hba_down_post function to
7390  * free any pending commands.
7391  **/
7392 static void
7393 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
7394 {
7395         int wait_cnt = 0;
7396         LPFC_MBOXQ_t *mboxq;
7397
7398         lpfc_stop_hba_timers(phba);
7399         phba->sli4_hba.intr_enable = 0;
7400
7401         /*
7402          * Gracefully wait out the potential current outstanding asynchronous
7403          * mailbox command.
7404          */
7405
7406         /* First, block any pending async mailbox command from posted */
7407         spin_lock_irq(&phba->hbalock);
7408         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
7409         spin_unlock_irq(&phba->hbalock);
7410         /* Now, trying to wait it out if we can */
7411         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
7412                 msleep(10);
7413                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
7414                         break;
7415         }
7416         /* Forcefully release the outstanding mailbox command if timed out */
7417         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
7418                 spin_lock_irq(&phba->hbalock);
7419                 mboxq = phba->sli.mbox_active;
7420                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
7421                 __lpfc_mbox_cmpl_put(phba, mboxq);
7422                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
7423                 phba->sli.mbox_active = NULL;
7424                 spin_unlock_irq(&phba->hbalock);
7425         }
7426
7427         /* Tear down the queues in the HBA */
7428         lpfc_sli4_queue_unset(phba);
7429
7430         /* Disable PCI subsystem interrupt */
7431         lpfc_sli4_disable_intr(phba);
7432
7433         /* Stop kthread signal shall trigger work_done one more time */
7434         kthread_stop(phba->worker_thread);
7435
7436         /* Stop the SLI4 device port */
7437         phba->pport->work_port_events = 0;
7438 }
7439
7440  /**
7441  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
7442  * @phba: Pointer to HBA context object.
7443  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
7444  *
7445  * This function is called in the SLI4 code path to read the port's
7446  * sli4 capabilities.
7447  *
7448  * This function may be be called from any context that can block-wait
7449  * for the completion.  The expectation is that this routine is called
7450  * typically from probe_one or from the online routine.
7451  **/
7452 int
7453 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
7454 {
7455         int rc;
7456         struct lpfc_mqe *mqe;
7457         struct lpfc_pc_sli4_params *sli4_params;
7458         uint32_t mbox_tmo;
7459
7460         rc = 0;
7461         mqe = &mboxq->u.mqe;
7462
7463         /* Read the port's SLI4 Parameters port capabilities */
7464         lpfc_sli4_params(mboxq);
7465         if (!phba->sli4_hba.intr_enable)
7466                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7467         else {
7468                 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_PORT_CAPABILITIES);
7469                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
7470         }
7471
7472         if (unlikely(rc))
7473                 return 1;
7474
7475         sli4_params = &phba->sli4_hba.pc_sli4_params;
7476         sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
7477         sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
7478         sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
7479         sli4_params->featurelevel_1 = bf_get(featurelevel_1,
7480                                              &mqe->un.sli4_params);
7481         sli4_params->featurelevel_2 = bf_get(featurelevel_2,
7482                                              &mqe->un.sli4_params);
7483         sli4_params->proto_types = mqe->un.sli4_params.word3;
7484         sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
7485         sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
7486         sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
7487         sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
7488         sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
7489         sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
7490         sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
7491         sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
7492         sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
7493         sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
7494         sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
7495         sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
7496         sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
7497         sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
7498         sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
7499         sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
7500         sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
7501         sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
7502         sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
7503         sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
7504         return rc;
7505 }
7506
7507 /**
7508  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
7509  * @pdev: pointer to PCI device
7510  * @pid: pointer to PCI device identifier
7511  *
7512  * This routine is to be called to attach a device with SLI-3 interface spec
7513  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
7514  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
7515  * information of the device and driver to see if the driver state that it can
7516  * support this kind of device. If the match is successful, the driver core
7517  * invokes this routine. If this routine determines it can claim the HBA, it
7518  * does all the initialization that it needs to do to handle the HBA properly.
7519  *
7520  * Return code
7521  *      0 - driver can claim the device
7522  *      negative value - driver can not claim the device
7523  **/
7524 static int __devinit
7525 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
7526 {
7527         struct lpfc_hba   *phba;
7528         struct lpfc_vport *vport = NULL;
7529         struct Scsi_Host  *shost = NULL;
7530         int error;
7531         uint32_t cfg_mode, intr_mode;
7532
7533         /* Allocate memory for HBA structure */
7534         phba = lpfc_hba_alloc(pdev);
7535         if (!phba)
7536                 return -ENOMEM;
7537
7538         /* Perform generic PCI device enabling operation */
7539         error = lpfc_enable_pci_dev(phba);
7540         if (error) {
7541                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7542                                 "1401 Failed to enable pci device.\n");
7543                 goto out_free_phba;
7544         }
7545
7546         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
7547         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
7548         if (error)
7549                 goto out_disable_pci_dev;
7550
7551         /* Set up SLI-3 specific device PCI memory space */
7552         error = lpfc_sli_pci_mem_setup(phba);
7553         if (error) {
7554                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7555                                 "1402 Failed to set up pci memory space.\n");
7556                 goto out_disable_pci_dev;
7557         }
7558
7559         /* Set up phase-1 common device driver resources */
7560         error = lpfc_setup_driver_resource_phase1(phba);
7561         if (error) {
7562                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7563                                 "1403 Failed to set up driver resource.\n");
7564                 goto out_unset_pci_mem_s3;
7565         }
7566
7567         /* Set up SLI-3 specific device driver resources */
7568         error = lpfc_sli_driver_resource_setup(phba);
7569         if (error) {
7570                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7571                                 "1404 Failed to set up driver resource.\n");
7572                 goto out_unset_pci_mem_s3;
7573         }
7574
7575         /* Initialize and populate the iocb list per host */
7576         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
7577         if (error) {
7578                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7579                                 "1405 Failed to initialize iocb list.\n");
7580                 goto out_unset_driver_resource_s3;
7581         }
7582
7583         /* Set up common device driver resources */
7584         error = lpfc_setup_driver_resource_phase2(phba);
7585         if (error) {
7586                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7587                                 "1406 Failed to set up driver resource.\n");
7588                 goto out_free_iocb_list;
7589         }
7590
7591         /* Create SCSI host to the physical port */
7592         error = lpfc_create_shost(phba);
7593         if (error) {
7594                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7595                                 "1407 Failed to create scsi host.\n");
7596                 goto out_unset_driver_resource;
7597         }
7598
7599         /* Configure sysfs attributes */
7600         vport = phba->pport;
7601         error = lpfc_alloc_sysfs_attr(vport);
7602         if (error) {
7603                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7604                                 "1476 Failed to allocate sysfs attr\n");
7605                 goto out_destroy_shost;
7606         }
7607
7608         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
7609         /* Now, trying to enable interrupt and bring up the device */
7610         cfg_mode = phba->cfg_use_msi;
7611         while (true) {
7612                 /* Put device to a known state before enabling interrupt */
7613                 lpfc_stop_port(phba);
7614                 /* Configure and enable interrupt */
7615                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
7616                 if (intr_mode == LPFC_INTR_ERROR) {
7617                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7618                                         "0431 Failed to enable interrupt.\n");
7619                         error = -ENODEV;
7620                         goto out_free_sysfs_attr;
7621                 }
7622                 /* SLI-3 HBA setup */
7623                 if (lpfc_sli_hba_setup(phba)) {
7624                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7625                                         "1477 Failed to set up hba\n");
7626                         error = -ENODEV;
7627                         goto out_remove_device;
7628                 }
7629
7630                 /* Wait 50ms for the interrupts of previous mailbox commands */
7631                 msleep(50);
7632                 /* Check active interrupts on message signaled interrupts */
7633                 if (intr_mode == 0 ||
7634                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
7635                         /* Log the current active interrupt mode */
7636                         phba->intr_mode = intr_mode;
7637                         lpfc_log_intr_mode(phba, intr_mode);
7638                         break;
7639                 } else {
7640                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7641                                         "0447 Configure interrupt mode (%d) "
7642                                         "failed active interrupt test.\n",
7643                                         intr_mode);
7644                         /* Disable the current interrupt mode */
7645                         lpfc_sli_disable_intr(phba);
7646                         /* Try next level of interrupt mode */
7647                         cfg_mode = --intr_mode;
7648                 }
7649         }
7650
7651         /* Perform post initialization setup */
7652         lpfc_post_init_setup(phba);
7653
7654         /* Check if there are static vports to be created. */
7655         lpfc_create_static_vport(phba);
7656
7657         return 0;
7658
7659 out_remove_device:
7660         lpfc_unset_hba(phba);
7661 out_free_sysfs_attr:
7662         lpfc_free_sysfs_attr(vport);
7663 out_destroy_shost:
7664         lpfc_destroy_shost(phba);
7665 out_unset_driver_resource:
7666         lpfc_unset_driver_resource_phase2(phba);
7667 out_free_iocb_list:
7668         lpfc_free_iocb_list(phba);
7669 out_unset_driver_resource_s3:
7670         lpfc_sli_driver_resource_unset(phba);
7671 out_unset_pci_mem_s3:
7672         lpfc_sli_pci_mem_unset(phba);
7673 out_disable_pci_dev:
7674         lpfc_disable_pci_dev(phba);
7675         if (shost)
7676                 scsi_host_put(shost);
7677 out_free_phba:
7678         lpfc_hba_free(phba);
7679         return error;
7680 }
7681
7682 /**
7683  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
7684  * @pdev: pointer to PCI device
7685  *
7686  * This routine is to be called to disattach a device with SLI-3 interface
7687  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
7688  * removed from PCI bus, it performs all the necessary cleanup for the HBA
7689  * device to be removed from the PCI subsystem properly.
7690  **/
7691 static void __devexit
7692 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
7693 {
7694         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
7695         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
7696         struct lpfc_vport **vports;
7697         struct lpfc_hba   *phba = vport->phba;
7698         int i;
7699         int bars = pci_select_bars(pdev, IORESOURCE_MEM);
7700
7701         spin_lock_irq(&phba->hbalock);
7702         vport->load_flag |= FC_UNLOADING;
7703         spin_unlock_irq(&phba->hbalock);
7704
7705         lpfc_free_sysfs_attr(vport);
7706
7707         /* Release all the vports against this physical port */
7708         vports = lpfc_create_vport_work_array(phba);
7709         if (vports != NULL)
7710                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
7711                         fc_vport_terminate(vports[i]->fc_vport);
7712         lpfc_destroy_vport_work_array(phba, vports);
7713
7714         /* Remove FC host and then SCSI host with the physical port */
7715         fc_remove_host(shost);
7716         scsi_remove_host(shost);
7717         lpfc_cleanup(vport);
7718
7719         /*
7720          * Bring down the SLI Layer. This step disable all interrupts,
7721          * clears the rings, discards all mailbox commands, and resets
7722          * the HBA.
7723          */
7724
7725         /* HBA interrupt will be diabled after this call */
7726         lpfc_sli_hba_down(phba);
7727         /* Stop kthread signal shall trigger work_done one more time */
7728         kthread_stop(phba->worker_thread);
7729         /* Final cleanup of txcmplq and reset the HBA */
7730         lpfc_sli_brdrestart(phba);
7731
7732         lpfc_stop_hba_timers(phba);
7733         spin_lock_irq(&phba->hbalock);
7734         list_del_init(&vport->listentry);
7735         spin_unlock_irq(&phba->hbalock);
7736
7737         lpfc_debugfs_terminate(vport);
7738
7739         /* Disable interrupt */
7740         lpfc_sli_disable_intr(phba);
7741
7742         pci_set_drvdata(pdev, NULL);
7743         scsi_host_put(shost);
7744
7745         /*
7746          * Call scsi_free before mem_free since scsi bufs are released to their
7747          * corresponding pools here.
7748          */
7749         lpfc_scsi_free(phba);
7750         lpfc_mem_free_all(phba);
7751
7752         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
7753                           phba->hbqslimp.virt, phba->hbqslimp.phys);
7754
7755         /* Free resources associated with SLI2 interface */
7756         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
7757                           phba->slim2p.virt, phba->slim2p.phys);
7758
7759         /* unmap adapter SLIM and Control Registers */
7760         iounmap(phba->ctrl_regs_memmap_p);
7761         iounmap(phba->slim_memmap_p);
7762
7763         lpfc_hba_free(phba);
7764
7765         pci_release_selected_regions(pdev, bars);
7766         pci_disable_device(pdev);
7767 }
7768
7769 /**
7770  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
7771  * @pdev: pointer to PCI device
7772  * @msg: power management message
7773  *
7774  * This routine is to be called from the kernel's PCI subsystem to support
7775  * system Power Management (PM) to device with SLI-3 interface spec. When
7776  * PM invokes this method, it quiesces the device by stopping the driver's
7777  * worker thread for the device, turning off device's interrupt and DMA,
7778  * and bring the device offline. Note that as the driver implements the
7779  * minimum PM requirements to a power-aware driver's PM support for the
7780  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
7781  * to the suspend() method call will be treated as SUSPEND and the driver will
7782  * fully reinitialize its device during resume() method call, the driver will
7783  * set device to PCI_D3hot state in PCI config space instead of setting it
7784  * according to the @msg provided by the PM.
7785  *
7786  * Return code
7787  *      0 - driver suspended the device
7788  *      Error otherwise
7789  **/
7790 static int
7791 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
7792 {
7793         struct Scsi_Host *shost = pci_get_drvdata(pdev);
7794         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
7795
7796         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7797                         "0473 PCI device Power Management suspend.\n");
7798
7799         /* Bring down the device */
7800         lpfc_offline_prep(phba);
7801         lpfc_offline(phba);
7802         kthread_stop(phba->worker_thread);
7803
7804         /* Disable interrupt from device */
7805         lpfc_sli_disable_intr(phba);
7806
7807         /* Save device state to PCI config space */
7808         pci_save_state(pdev);
7809         pci_set_power_state(pdev, PCI_D3hot);
7810
7811         return 0;
7812 }
7813
7814 /**
7815  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
7816  * @pdev: pointer to PCI device
7817  *
7818  * This routine is to be called from the kernel's PCI subsystem to support
7819  * system Power Management (PM) to device with SLI-3 interface spec. When PM
7820  * invokes this method, it restores the device's PCI config space state and
7821  * fully reinitializes the device and brings it online. Note that as the
7822  * driver implements the minimum PM requirements to a power-aware driver's
7823  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
7824  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
7825  * driver will fully reinitialize its device during resume() method call,
7826  * the device will be set to PCI_D0 directly in PCI config space before
7827  * restoring the state.
7828  *
7829  * Return code
7830  *      0 - driver suspended the device
7831  *      Error otherwise
7832  **/
7833 static int
7834 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
7835 {
7836         struct Scsi_Host *shost = pci_get_drvdata(pdev);
7837         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
7838         uint32_t intr_mode;
7839         int error;
7840
7841         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7842                         "0452 PCI device Power Management resume.\n");
7843
7844         /* Restore device state from PCI config space */
7845         pci_set_power_state(pdev, PCI_D0);
7846         pci_restore_state(pdev);
7847
7848         /*
7849          * As the new kernel behavior of pci_restore_state() API call clears
7850          * device saved_state flag, need to save the restored state again.
7851          */
7852         pci_save_state(pdev);
7853
7854         if (pdev->is_busmaster)
7855                 pci_set_master(pdev);
7856
7857         /* Startup the kernel thread for this host adapter. */
7858         phba->worker_thread = kthread_run(lpfc_do_work, phba,
7859                                         "lpfc_worker_%d", phba->brd_no);
7860         if (IS_ERR(phba->worker_thread)) {
7861                 error = PTR_ERR(phba->worker_thread);
7862                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7863                                 "0434 PM resume failed to start worker "
7864                                 "thread: error=x%x.\n", error);
7865                 return error;
7866         }
7867
7868         /* Configure and enable interrupt */
7869         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
7870         if (intr_mode == LPFC_INTR_ERROR) {
7871                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7872                                 "0430 PM resume Failed to enable interrupt\n");
7873                 return -EIO;
7874         } else
7875                 phba->intr_mode = intr_mode;
7876
7877         /* Restart HBA and bring it online */
7878         lpfc_sli_brdrestart(phba);
7879         lpfc_online(phba);
7880
7881         /* Log the current active interrupt mode */
7882         lpfc_log_intr_mode(phba, phba->intr_mode);
7883
7884         return 0;
7885 }
7886
7887 /**
7888  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
7889  * @phba: pointer to lpfc hba data structure.
7890  *
7891  * This routine is called to prepare the SLI3 device for PCI slot recover. It
7892  * aborts all the outstanding SCSI I/Os to the pci device.
7893  **/
7894 static void
7895 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
7896 {
7897         struct lpfc_sli *psli = &phba->sli;
7898         struct lpfc_sli_ring  *pring;
7899
7900         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7901                         "2723 PCI channel I/O abort preparing for recovery\n");
7902
7903         /*
7904          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
7905          * and let the SCSI mid-layer to retry them to recover.
7906          */
7907         pring = &psli->ring[psli->fcp_ring];
7908         lpfc_sli_abort_iocb_ring(phba, pring);
7909 }
7910
7911 /**
7912  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
7913  * @phba: pointer to lpfc hba data structure.
7914  *
7915  * This routine is called to prepare the SLI3 device for PCI slot reset. It
7916  * disables the device interrupt and pci device, and aborts the internal FCP
7917  * pending I/Os.
7918  **/
7919 static void
7920 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
7921 {
7922         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7923                         "2710 PCI channel disable preparing for reset\n");
7924
7925         /* Block any management I/Os to the device */
7926         lpfc_block_mgmt_io(phba);
7927
7928         /* Block all SCSI devices' I/Os on the host */
7929         lpfc_scsi_dev_block(phba);
7930
7931         /* stop all timers */
7932         lpfc_stop_hba_timers(phba);
7933
7934         /* Disable interrupt and pci device */
7935         lpfc_sli_disable_intr(phba);
7936         pci_disable_device(phba->pcidev);
7937
7938         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
7939         lpfc_sli_flush_fcp_rings(phba);
7940 }
7941
7942 /**
7943  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
7944  * @phba: pointer to lpfc hba data structure.
7945  *
7946  * This routine is called to prepare the SLI3 device for PCI slot permanently
7947  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
7948  * pending I/Os.
7949  **/
7950 static void
7951 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
7952 {
7953         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7954                         "2711 PCI channel permanent disable for failure\n");
7955         /* Block all SCSI devices' I/Os on the host */
7956         lpfc_scsi_dev_block(phba);
7957
7958         /* stop all timers */
7959         lpfc_stop_hba_timers(phba);
7960
7961         /* Clean up all driver's outstanding SCSI I/Os */
7962         lpfc_sli_flush_fcp_rings(phba);
7963 }
7964
7965 /**
7966  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
7967  * @pdev: pointer to PCI device.
7968  * @state: the current PCI connection state.
7969  *
7970  * This routine is called from the PCI subsystem for I/O error handling to
7971  * device with SLI-3 interface spec. This function is called by the PCI
7972  * subsystem after a PCI bus error affecting this device has been detected.
7973  * When this function is invoked, it will need to stop all the I/Os and
7974  * interrupt(s) to the device. Once that is done, it will return
7975  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
7976  * as desired.
7977  *
7978  * Return codes
7979  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
7980  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
7981  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
7982  **/
7983 static pci_ers_result_t
7984 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
7985 {
7986         struct Scsi_Host *shost = pci_get_drvdata(pdev);
7987         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
7988
7989         switch (state) {
7990         case pci_channel_io_normal:
7991                 /* Non-fatal error, prepare for recovery */
7992                 lpfc_sli_prep_dev_for_recover(phba);
7993                 return PCI_ERS_RESULT_CAN_RECOVER;
7994         case pci_channel_io_frozen:
7995                 /* Fatal error, prepare for slot reset */
7996                 lpfc_sli_prep_dev_for_reset(phba);
7997                 return PCI_ERS_RESULT_NEED_RESET;
7998         case pci_channel_io_perm_failure:
7999                 /* Permanent failure, prepare for device down */
8000                 lpfc_sli_prep_dev_for_perm_failure(phba);
8001                 return PCI_ERS_RESULT_DISCONNECT;
8002         default:
8003                 /* Unknown state, prepare and request slot reset */
8004                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8005                                 "0472 Unknown PCI error state: x%x\n", state);
8006                 lpfc_sli_prep_dev_for_reset(phba);
8007                 return PCI_ERS_RESULT_NEED_RESET;
8008         }
8009 }
8010
8011 /**
8012  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
8013  * @pdev: pointer to PCI device.
8014  *
8015  * This routine is called from the PCI subsystem for error handling to
8016  * device with SLI-3 interface spec. This is called after PCI bus has been
8017  * reset to restart the PCI card from scratch, as if from a cold-boot.
8018  * During the PCI subsystem error recovery, after driver returns
8019  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
8020  * recovery and then call this routine before calling the .resume method
8021  * to recover the device. This function will initialize the HBA device,
8022  * enable the interrupt, but it will just put the HBA to offline state
8023  * without passing any I/O traffic.
8024  *
8025  * Return codes
8026  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
8027  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8028  */
8029 static pci_ers_result_t
8030 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
8031 {
8032         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8033         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8034         struct lpfc_sli *psli = &phba->sli;
8035         uint32_t intr_mode;
8036
8037         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
8038         if (pci_enable_device_mem(pdev)) {
8039                 printk(KERN_ERR "lpfc: Cannot re-enable "
8040                         "PCI device after reset.\n");
8041                 return PCI_ERS_RESULT_DISCONNECT;
8042         }
8043
8044         pci_restore_state(pdev);
8045
8046         /*
8047          * As the new kernel behavior of pci_restore_state() API call clears
8048          * device saved_state flag, need to save the restored state again.
8049          */
8050         pci_save_state(pdev);
8051
8052         if (pdev->is_busmaster)
8053                 pci_set_master(pdev);
8054
8055         spin_lock_irq(&phba->hbalock);
8056         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
8057         spin_unlock_irq(&phba->hbalock);
8058
8059         /* Configure and enable interrupt */
8060         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8061         if (intr_mode == LPFC_INTR_ERROR) {
8062                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8063                                 "0427 Cannot re-enable interrupt after "
8064                                 "slot reset.\n");
8065                 return PCI_ERS_RESULT_DISCONNECT;
8066         } else
8067                 phba->intr_mode = intr_mode;
8068
8069         /* Take device offline, it will perform cleanup */
8070         lpfc_offline_prep(phba);
8071         lpfc_offline(phba);
8072         lpfc_sli_brdrestart(phba);
8073
8074         /* Log the current active interrupt mode */
8075         lpfc_log_intr_mode(phba, phba->intr_mode);
8076
8077         return PCI_ERS_RESULT_RECOVERED;
8078 }
8079
8080 /**
8081  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
8082  * @pdev: pointer to PCI device
8083  *
8084  * This routine is called from the PCI subsystem for error handling to device
8085  * with SLI-3 interface spec. It is called when kernel error recovery tells
8086  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
8087  * error recovery. After this call, traffic can start to flow from this device
8088  * again.
8089  */
8090 static void
8091 lpfc_io_resume_s3(struct pci_dev *pdev)
8092 {
8093         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8094         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8095
8096         /* Bring device online, it will be no-op for non-fatal error resume */
8097         lpfc_online(phba);
8098
8099         /* Clean up Advanced Error Reporting (AER) if needed */
8100         if (phba->hba_flag & HBA_AER_ENABLED)
8101                 pci_cleanup_aer_uncorrect_error_status(pdev);
8102 }
8103
8104 /**
8105  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
8106  * @phba: pointer to lpfc hba data structure.
8107  *
8108  * returns the number of ELS/CT IOCBs to reserve
8109  **/
8110 int
8111 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
8112 {
8113         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
8114
8115         if (phba->sli_rev == LPFC_SLI_REV4) {
8116                 if (max_xri <= 100)
8117                         return 10;
8118                 else if (max_xri <= 256)
8119                         return 25;
8120                 else if (max_xri <= 512)
8121                         return 50;
8122                 else if (max_xri <= 1024)
8123                         return 100;
8124                 else
8125                         return 150;
8126         } else
8127                 return 0;
8128 }
8129
8130 /**
8131  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
8132  * @pdev: pointer to PCI device
8133  * @pid: pointer to PCI device identifier
8134  *
8135  * This routine is called from the kernel's PCI subsystem to device with
8136  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
8137  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8138  * information of the device and driver to see if the driver state that it
8139  * can support this kind of device. If the match is successful, the driver
8140  * core invokes this routine. If this routine determines it can claim the HBA,
8141  * it does all the initialization that it needs to do to handle the HBA
8142  * properly.
8143  *
8144  * Return code
8145  *      0 - driver can claim the device
8146  *      negative value - driver can not claim the device
8147  **/
8148 static int __devinit
8149 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
8150 {
8151         struct lpfc_hba   *phba;
8152         struct lpfc_vport *vport = NULL;
8153         struct Scsi_Host  *shost = NULL;
8154         int error;
8155         uint32_t cfg_mode, intr_mode;
8156         int mcnt;
8157
8158         /* Allocate memory for HBA structure */
8159         phba = lpfc_hba_alloc(pdev);
8160         if (!phba)
8161                 return -ENOMEM;
8162
8163         /* Perform generic PCI device enabling operation */
8164         error = lpfc_enable_pci_dev(phba);
8165         if (error) {
8166                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8167                                 "1409 Failed to enable pci device.\n");
8168                 goto out_free_phba;
8169         }
8170
8171         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
8172         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
8173         if (error)
8174                 goto out_disable_pci_dev;
8175
8176         /* Set up SLI-4 specific device PCI memory space */
8177         error = lpfc_sli4_pci_mem_setup(phba);
8178         if (error) {
8179                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8180                                 "1410 Failed to set up pci memory space.\n");
8181                 goto out_disable_pci_dev;
8182         }
8183
8184         /* Set up phase-1 common device driver resources */
8185         error = lpfc_setup_driver_resource_phase1(phba);
8186         if (error) {
8187                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8188                                 "1411 Failed to set up driver resource.\n");
8189                 goto out_unset_pci_mem_s4;
8190         }
8191
8192         /* Set up SLI-4 Specific device driver resources */
8193         error = lpfc_sli4_driver_resource_setup(phba);
8194         if (error) {
8195                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8196                                 "1412 Failed to set up driver resource.\n");
8197                 goto out_unset_pci_mem_s4;
8198         }
8199
8200         /* Initialize and populate the iocb list per host */
8201
8202         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8203                         "2821 initialize iocb list %d.\n",
8204                         phba->cfg_iocb_cnt*1024);
8205         error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
8206
8207         if (error) {
8208                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8209                                 "1413 Failed to initialize iocb list.\n");
8210                 goto out_unset_driver_resource_s4;
8211         }
8212
8213         /* Set up common device driver resources */
8214         error = lpfc_setup_driver_resource_phase2(phba);
8215         if (error) {
8216                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8217                                 "1414 Failed to set up driver resource.\n");
8218                 goto out_free_iocb_list;
8219         }
8220
8221         /* Create SCSI host to the physical port */
8222         error = lpfc_create_shost(phba);
8223         if (error) {
8224                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8225                                 "1415 Failed to create scsi host.\n");
8226                 goto out_unset_driver_resource;
8227         }
8228
8229         /* Configure sysfs attributes */
8230         vport = phba->pport;
8231         error = lpfc_alloc_sysfs_attr(vport);
8232         if (error) {
8233                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8234                                 "1416 Failed to allocate sysfs attr\n");
8235                 goto out_destroy_shost;
8236         }
8237
8238         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
8239         /* Now, trying to enable interrupt and bring up the device */
8240         cfg_mode = phba->cfg_use_msi;
8241         while (true) {
8242                 /* Put device to a known state before enabling interrupt */
8243                 lpfc_stop_port(phba);
8244                 /* Configure and enable interrupt */
8245                 intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
8246                 if (intr_mode == LPFC_INTR_ERROR) {
8247                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8248                                         "0426 Failed to enable interrupt.\n");
8249                         error = -ENODEV;
8250                         goto out_free_sysfs_attr;
8251                 }
8252                 /* Default to single FCP EQ for non-MSI-X */
8253                 if (phba->intr_type != MSIX)
8254                         phba->cfg_fcp_eq_count = 1;
8255                 else if (phba->sli4_hba.msix_vec_nr < phba->cfg_fcp_eq_count)
8256                         phba->cfg_fcp_eq_count = phba->sli4_hba.msix_vec_nr - 1;
8257                 /* Set up SLI-4 HBA */
8258                 if (lpfc_sli4_hba_setup(phba)) {
8259                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8260                                         "1421 Failed to set up hba\n");
8261                         error = -ENODEV;
8262                         goto out_disable_intr;
8263                 }
8264
8265                 /* Send NOP mbx cmds for non-INTx mode active interrupt test */
8266                 if (intr_mode != 0)
8267                         mcnt = lpfc_sli4_send_nop_mbox_cmds(phba,
8268                                                             LPFC_ACT_INTR_CNT);
8269
8270                 /* Check active interrupts received only for MSI/MSI-X */
8271                 if (intr_mode == 0 ||
8272                     phba->sli.slistat.sli_intr >= LPFC_ACT_INTR_CNT) {
8273                         /* Log the current active interrupt mode */
8274                         phba->intr_mode = intr_mode;
8275                         lpfc_log_intr_mode(phba, intr_mode);
8276                         break;
8277                 }
8278                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8279                                 "0451 Configure interrupt mode (%d) "
8280                                 "failed active interrupt test.\n",
8281                                 intr_mode);
8282                 /* Unset the preivous SLI-4 HBA setup */
8283                 lpfc_sli4_unset_hba(phba);
8284                 /* Try next level of interrupt mode */
8285                 cfg_mode = --intr_mode;
8286         }
8287
8288         /* Perform post initialization setup */
8289         lpfc_post_init_setup(phba);
8290
8291         /* Check if there are static vports to be created. */
8292         lpfc_create_static_vport(phba);
8293
8294         return 0;
8295
8296 out_disable_intr:
8297         lpfc_sli4_disable_intr(phba);
8298 out_free_sysfs_attr:
8299         lpfc_free_sysfs_attr(vport);
8300 out_destroy_shost:
8301         lpfc_destroy_shost(phba);
8302 out_unset_driver_resource:
8303         lpfc_unset_driver_resource_phase2(phba);
8304 out_free_iocb_list:
8305         lpfc_free_iocb_list(phba);
8306 out_unset_driver_resource_s4:
8307         lpfc_sli4_driver_resource_unset(phba);
8308 out_unset_pci_mem_s4:
8309         lpfc_sli4_pci_mem_unset(phba);
8310 out_disable_pci_dev:
8311         lpfc_disable_pci_dev(phba);
8312         if (shost)
8313                 scsi_host_put(shost);
8314 out_free_phba:
8315         lpfc_hba_free(phba);
8316         return error;
8317 }
8318
8319 /**
8320  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
8321  * @pdev: pointer to PCI device
8322  *
8323  * This routine is called from the kernel's PCI subsystem to device with
8324  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
8325  * removed from PCI bus, it performs all the necessary cleanup for the HBA
8326  * device to be removed from the PCI subsystem properly.
8327  **/
8328 static void __devexit
8329 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
8330 {
8331         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8332         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
8333         struct lpfc_vport **vports;
8334         struct lpfc_hba *phba = vport->phba;
8335         int i;
8336
8337         /* Mark the device unloading flag */
8338         spin_lock_irq(&phba->hbalock);
8339         vport->load_flag |= FC_UNLOADING;
8340         spin_unlock_irq(&phba->hbalock);
8341
8342         /* Free the HBA sysfs attributes */
8343         lpfc_free_sysfs_attr(vport);
8344
8345         /* Release all the vports against this physical port */
8346         vports = lpfc_create_vport_work_array(phba);
8347         if (vports != NULL)
8348                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
8349                         fc_vport_terminate(vports[i]->fc_vport);
8350         lpfc_destroy_vport_work_array(phba, vports);
8351
8352         /* Remove FC host and then SCSI host with the physical port */
8353         fc_remove_host(shost);
8354         scsi_remove_host(shost);
8355
8356         /* Perform cleanup on the physical port */
8357         lpfc_cleanup(vport);
8358
8359         /*
8360          * Bring down the SLI Layer. This step disables all interrupts,
8361          * clears the rings, discards all mailbox commands, and resets
8362          * the HBA FCoE function.
8363          */
8364         lpfc_debugfs_terminate(vport);
8365         lpfc_sli4_hba_unset(phba);
8366
8367         spin_lock_irq(&phba->hbalock);
8368         list_del_init(&vport->listentry);
8369         spin_unlock_irq(&phba->hbalock);
8370
8371         /* Call scsi_free before lpfc_sli4_driver_resource_unset since scsi
8372          * buffers are released to their corresponding pools here.
8373          */
8374         lpfc_scsi_free(phba);
8375         lpfc_sli4_driver_resource_unset(phba);
8376
8377         /* Unmap adapter Control and Doorbell registers */
8378         lpfc_sli4_pci_mem_unset(phba);
8379
8380         /* Release PCI resources and disable device's PCI function */
8381         scsi_host_put(shost);
8382         lpfc_disable_pci_dev(phba);
8383
8384         /* Finally, free the driver's device data structure */
8385         lpfc_hba_free(phba);
8386
8387         return;
8388 }
8389
8390 /**
8391  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
8392  * @pdev: pointer to PCI device
8393  * @msg: power management message
8394  *
8395  * This routine is called from the kernel's PCI subsystem to support system
8396  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
8397  * this method, it quiesces the device by stopping the driver's worker
8398  * thread for the device, turning off device's interrupt and DMA, and bring
8399  * the device offline. Note that as the driver implements the minimum PM
8400  * requirements to a power-aware driver's PM support for suspend/resume -- all
8401  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
8402  * method call will be treated as SUSPEND and the driver will fully
8403  * reinitialize its device during resume() method call, the driver will set
8404  * device to PCI_D3hot state in PCI config space instead of setting it
8405  * according to the @msg provided by the PM.
8406  *
8407  * Return code
8408  *      0 - driver suspended the device
8409  *      Error otherwise
8410  **/
8411 static int
8412 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
8413 {
8414         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8415         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8416
8417         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8418                         "2843 PCI device Power Management suspend.\n");
8419
8420         /* Bring down the device */
8421         lpfc_offline_prep(phba);
8422         lpfc_offline(phba);
8423         kthread_stop(phba->worker_thread);
8424
8425         /* Disable interrupt from device */
8426         lpfc_sli4_disable_intr(phba);
8427
8428         /* Save device state to PCI config space */
8429         pci_save_state(pdev);
8430         pci_set_power_state(pdev, PCI_D3hot);
8431
8432         return 0;
8433 }
8434
8435 /**
8436  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
8437  * @pdev: pointer to PCI device
8438  *
8439  * This routine is called from the kernel's PCI subsystem to support system
8440  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
8441  * this method, it restores the device's PCI config space state and fully
8442  * reinitializes the device and brings it online. Note that as the driver
8443  * implements the minimum PM requirements to a power-aware driver's PM for
8444  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
8445  * to the suspend() method call will be treated as SUSPEND and the driver
8446  * will fully reinitialize its device during resume() method call, the device
8447  * will be set to PCI_D0 directly in PCI config space before restoring the
8448  * state.
8449  *
8450  * Return code
8451  *      0 - driver suspended the device
8452  *      Error otherwise
8453  **/
8454 static int
8455 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
8456 {
8457         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8458         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8459         uint32_t intr_mode;
8460         int error;
8461
8462         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8463                         "0292 PCI device Power Management resume.\n");
8464
8465         /* Restore device state from PCI config space */
8466         pci_set_power_state(pdev, PCI_D0);
8467         pci_restore_state(pdev);
8468
8469         /*
8470          * As the new kernel behavior of pci_restore_state() API call clears
8471          * device saved_state flag, need to save the restored state again.
8472          */
8473         pci_save_state(pdev);
8474
8475         if (pdev->is_busmaster)
8476                 pci_set_master(pdev);
8477
8478          /* Startup the kernel thread for this host adapter. */
8479         phba->worker_thread = kthread_run(lpfc_do_work, phba,
8480                                         "lpfc_worker_%d", phba->brd_no);
8481         if (IS_ERR(phba->worker_thread)) {
8482                 error = PTR_ERR(phba->worker_thread);
8483                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8484                                 "0293 PM resume failed to start worker "
8485                                 "thread: error=x%x.\n", error);
8486                 return error;
8487         }
8488
8489         /* Configure and enable interrupt */
8490         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
8491         if (intr_mode == LPFC_INTR_ERROR) {
8492                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8493                                 "0294 PM resume Failed to enable interrupt\n");
8494                 return -EIO;
8495         } else
8496                 phba->intr_mode = intr_mode;
8497
8498         /* Restart HBA and bring it online */
8499         lpfc_sli_brdrestart(phba);
8500         lpfc_online(phba);
8501
8502         /* Log the current active interrupt mode */
8503         lpfc_log_intr_mode(phba, phba->intr_mode);
8504
8505         return 0;
8506 }
8507
8508 /**
8509  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
8510  * @phba: pointer to lpfc hba data structure.
8511  *
8512  * This routine is called to prepare the SLI4 device for PCI slot recover. It
8513  * aborts all the outstanding SCSI I/Os to the pci device.
8514  **/
8515 static void
8516 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
8517 {
8518         struct lpfc_sli *psli = &phba->sli;
8519         struct lpfc_sli_ring  *pring;
8520
8521         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8522                         "2828 PCI channel I/O abort preparing for recovery\n");
8523         /*
8524          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
8525          * and let the SCSI mid-layer to retry them to recover.
8526          */
8527         pring = &psli->ring[psli->fcp_ring];
8528         lpfc_sli_abort_iocb_ring(phba, pring);
8529 }
8530
8531 /**
8532  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
8533  * @phba: pointer to lpfc hba data structure.
8534  *
8535  * This routine is called to prepare the SLI4 device for PCI slot reset. It
8536  * disables the device interrupt and pci device, and aborts the internal FCP
8537  * pending I/Os.
8538  **/
8539 static void
8540 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
8541 {
8542         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8543                         "2826 PCI channel disable preparing for reset\n");
8544
8545         /* Block any management I/Os to the device */
8546         lpfc_block_mgmt_io(phba);
8547
8548         /* Block all SCSI devices' I/Os on the host */
8549         lpfc_scsi_dev_block(phba);
8550
8551         /* stop all timers */
8552         lpfc_stop_hba_timers(phba);
8553
8554         /* Disable interrupt and pci device */
8555         lpfc_sli4_disable_intr(phba);
8556         pci_disable_device(phba->pcidev);
8557
8558         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
8559         lpfc_sli_flush_fcp_rings(phba);
8560 }
8561
8562 /**
8563  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
8564  * @phba: pointer to lpfc hba data structure.
8565  *
8566  * This routine is called to prepare the SLI4 device for PCI slot permanently
8567  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
8568  * pending I/Os.
8569  **/
8570 static void
8571 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
8572 {
8573         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8574                         "2827 PCI channel permanent disable for failure\n");
8575
8576         /* Block all SCSI devices' I/Os on the host */
8577         lpfc_scsi_dev_block(phba);
8578
8579         /* stop all timers */
8580         lpfc_stop_hba_timers(phba);
8581
8582         /* Clean up all driver's outstanding SCSI I/Os */
8583         lpfc_sli_flush_fcp_rings(phba);
8584 }
8585
8586 /**
8587  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
8588  * @pdev: pointer to PCI device.
8589  * @state: the current PCI connection state.
8590  *
8591  * This routine is called from the PCI subsystem for error handling to device
8592  * with SLI-4 interface spec. This function is called by the PCI subsystem
8593  * after a PCI bus error affecting this device has been detected. When this
8594  * function is invoked, it will need to stop all the I/Os and interrupt(s)
8595  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
8596  * for the PCI subsystem to perform proper recovery as desired.
8597  *
8598  * Return codes
8599  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
8600  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8601  **/
8602 static pci_ers_result_t
8603 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
8604 {
8605         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8606         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8607
8608         switch (state) {
8609         case pci_channel_io_normal:
8610                 /* Non-fatal error, prepare for recovery */
8611                 lpfc_sli4_prep_dev_for_recover(phba);
8612                 return PCI_ERS_RESULT_CAN_RECOVER;
8613         case pci_channel_io_frozen:
8614                 /* Fatal error, prepare for slot reset */
8615                 lpfc_sli4_prep_dev_for_reset(phba);
8616                 return PCI_ERS_RESULT_NEED_RESET;
8617         case pci_channel_io_perm_failure:
8618                 /* Permanent failure, prepare for device down */
8619                 lpfc_sli4_prep_dev_for_perm_failure(phba);
8620                 return PCI_ERS_RESULT_DISCONNECT;
8621         default:
8622                 /* Unknown state, prepare and request slot reset */
8623                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8624                                 "2825 Unknown PCI error state: x%x\n", state);
8625                 lpfc_sli4_prep_dev_for_reset(phba);
8626                 return PCI_ERS_RESULT_NEED_RESET;
8627         }
8628 }
8629
8630 /**
8631  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
8632  * @pdev: pointer to PCI device.
8633  *
8634  * This routine is called from the PCI subsystem for error handling to device
8635  * with SLI-4 interface spec. It is called after PCI bus has been reset to
8636  * restart the PCI card from scratch, as if from a cold-boot. During the
8637  * PCI subsystem error recovery, after the driver returns
8638  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
8639  * recovery and then call this routine before calling the .resume method to
8640  * recover the device. This function will initialize the HBA device, enable
8641  * the interrupt, but it will just put the HBA to offline state without
8642  * passing any I/O traffic.
8643  *
8644  * Return codes
8645  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
8646  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8647  */
8648 static pci_ers_result_t
8649 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
8650 {
8651         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8652         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8653         struct lpfc_sli *psli = &phba->sli;
8654         uint32_t intr_mode;
8655
8656         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
8657         if (pci_enable_device_mem(pdev)) {
8658                 printk(KERN_ERR "lpfc: Cannot re-enable "
8659                         "PCI device after reset.\n");
8660                 return PCI_ERS_RESULT_DISCONNECT;
8661         }
8662
8663         pci_restore_state(pdev);
8664         if (pdev->is_busmaster)
8665                 pci_set_master(pdev);
8666
8667         spin_lock_irq(&phba->hbalock);
8668         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
8669         spin_unlock_irq(&phba->hbalock);
8670
8671         /* Configure and enable interrupt */
8672         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
8673         if (intr_mode == LPFC_INTR_ERROR) {
8674                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8675                                 "2824 Cannot re-enable interrupt after "
8676                                 "slot reset.\n");
8677                 return PCI_ERS_RESULT_DISCONNECT;
8678         } else
8679                 phba->intr_mode = intr_mode;
8680
8681         /* Log the current active interrupt mode */
8682         lpfc_log_intr_mode(phba, phba->intr_mode);
8683
8684         return PCI_ERS_RESULT_RECOVERED;
8685 }
8686
8687 /**
8688  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
8689  * @pdev: pointer to PCI device
8690  *
8691  * This routine is called from the PCI subsystem for error handling to device
8692  * with SLI-4 interface spec. It is called when kernel error recovery tells
8693  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
8694  * error recovery. After this call, traffic can start to flow from this device
8695  * again.
8696  **/
8697 static void
8698 lpfc_io_resume_s4(struct pci_dev *pdev)
8699 {
8700         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8701         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8702
8703         /*
8704          * In case of slot reset, as function reset is performed through
8705          * mailbox command which needs DMA to be enabled, this operation
8706          * has to be moved to the io resume phase. Taking device offline
8707          * will perform the necessary cleanup.
8708          */
8709         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
8710                 /* Perform device reset */
8711                 lpfc_offline_prep(phba);
8712                 lpfc_offline(phba);
8713                 lpfc_sli_brdrestart(phba);
8714                 /* Bring the device back online */
8715                 lpfc_online(phba);
8716         }
8717
8718         /* Clean up Advanced Error Reporting (AER) if needed */
8719         if (phba->hba_flag & HBA_AER_ENABLED)
8720                 pci_cleanup_aer_uncorrect_error_status(pdev);
8721 }
8722
8723 /**
8724  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
8725  * @pdev: pointer to PCI device
8726  * @pid: pointer to PCI device identifier
8727  *
8728  * This routine is to be registered to the kernel's PCI subsystem. When an
8729  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
8730  * at PCI device-specific information of the device and driver to see if the
8731  * driver state that it can support this kind of device. If the match is
8732  * successful, the driver core invokes this routine. This routine dispatches
8733  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
8734  * do all the initialization that it needs to do to handle the HBA device
8735  * properly.
8736  *
8737  * Return code
8738  *      0 - driver can claim the device
8739  *      negative value - driver can not claim the device
8740  **/
8741 static int __devinit
8742 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
8743 {
8744         int rc;
8745         struct lpfc_sli_intf intf;
8746
8747         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
8748                 return -ENODEV;
8749
8750         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
8751             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
8752                 rc = lpfc_pci_probe_one_s4(pdev, pid);
8753         else
8754                 rc = lpfc_pci_probe_one_s3(pdev, pid);
8755
8756         return rc;
8757 }
8758
8759 /**
8760  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
8761  * @pdev: pointer to PCI device
8762  *
8763  * This routine is to be registered to the kernel's PCI subsystem. When an
8764  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
8765  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
8766  * remove routine, which will perform all the necessary cleanup for the
8767  * device to be removed from the PCI subsystem properly.
8768  **/
8769 static void __devexit
8770 lpfc_pci_remove_one(struct pci_dev *pdev)
8771 {
8772         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8773         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8774
8775         switch (phba->pci_dev_grp) {
8776         case LPFC_PCI_DEV_LP:
8777                 lpfc_pci_remove_one_s3(pdev);
8778                 break;
8779         case LPFC_PCI_DEV_OC:
8780                 lpfc_pci_remove_one_s4(pdev);
8781                 break;
8782         default:
8783                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8784                                 "1424 Invalid PCI device group: 0x%x\n",
8785                                 phba->pci_dev_grp);
8786                 break;
8787         }
8788         return;
8789 }
8790
8791 /**
8792  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
8793  * @pdev: pointer to PCI device
8794  * @msg: power management message
8795  *
8796  * This routine is to be registered to the kernel's PCI subsystem to support
8797  * system Power Management (PM). When PM invokes this method, it dispatches
8798  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
8799  * suspend the device.
8800  *
8801  * Return code
8802  *      0 - driver suspended the device
8803  *      Error otherwise
8804  **/
8805 static int
8806 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
8807 {
8808         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8809         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8810         int rc = -ENODEV;
8811
8812         switch (phba->pci_dev_grp) {
8813         case LPFC_PCI_DEV_LP:
8814                 rc = lpfc_pci_suspend_one_s3(pdev, msg);
8815                 break;
8816         case LPFC_PCI_DEV_OC:
8817                 rc = lpfc_pci_suspend_one_s4(pdev, msg);
8818                 break;
8819         default:
8820                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8821                                 "1425 Invalid PCI device group: 0x%x\n",
8822                                 phba->pci_dev_grp);
8823                 break;
8824         }
8825         return rc;
8826 }
8827
8828 /**
8829  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
8830  * @pdev: pointer to PCI device
8831  *
8832  * This routine is to be registered to the kernel's PCI subsystem to support
8833  * system Power Management (PM). When PM invokes this method, it dispatches
8834  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
8835  * resume the device.
8836  *
8837  * Return code
8838  *      0 - driver suspended the device
8839  *      Error otherwise
8840  **/
8841 static int
8842 lpfc_pci_resume_one(struct pci_dev *pdev)
8843 {
8844         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8845         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8846         int rc = -ENODEV;
8847
8848         switch (phba->pci_dev_grp) {
8849         case LPFC_PCI_DEV_LP:
8850                 rc = lpfc_pci_resume_one_s3(pdev);
8851                 break;
8852         case LPFC_PCI_DEV_OC:
8853                 rc = lpfc_pci_resume_one_s4(pdev);
8854                 break;
8855         default:
8856                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8857                                 "1426 Invalid PCI device group: 0x%x\n",
8858                                 phba->pci_dev_grp);
8859                 break;
8860         }
8861         return rc;
8862 }
8863
8864 /**
8865  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
8866  * @pdev: pointer to PCI device.
8867  * @state: the current PCI connection state.
8868  *
8869  * This routine is registered to the PCI subsystem for error handling. This
8870  * function is called by the PCI subsystem after a PCI bus error affecting
8871  * this device has been detected. When this routine is invoked, it dispatches
8872  * the action to the proper SLI-3 or SLI-4 device error detected handling
8873  * routine, which will perform the proper error detected operation.
8874  *
8875  * Return codes
8876  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
8877  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8878  **/
8879 static pci_ers_result_t
8880 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
8881 {
8882         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8883         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8884         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
8885
8886         switch (phba->pci_dev_grp) {
8887         case LPFC_PCI_DEV_LP:
8888                 rc = lpfc_io_error_detected_s3(pdev, state);
8889                 break;
8890         case LPFC_PCI_DEV_OC:
8891                 rc = lpfc_io_error_detected_s4(pdev, state);
8892                 break;
8893         default:
8894                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8895                                 "1427 Invalid PCI device group: 0x%x\n",
8896                                 phba->pci_dev_grp);
8897                 break;
8898         }
8899         return rc;
8900 }
8901
8902 /**
8903  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
8904  * @pdev: pointer to PCI device.
8905  *
8906  * This routine is registered to the PCI subsystem for error handling. This
8907  * function is called after PCI bus has been reset to restart the PCI card
8908  * from scratch, as if from a cold-boot. When this routine is invoked, it
8909  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
8910  * routine, which will perform the proper device reset.
8911  *
8912  * Return codes
8913  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
8914  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8915  **/
8916 static pci_ers_result_t
8917 lpfc_io_slot_reset(struct pci_dev *pdev)
8918 {
8919         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8920         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8921         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
8922
8923         switch (phba->pci_dev_grp) {
8924         case LPFC_PCI_DEV_LP:
8925                 rc = lpfc_io_slot_reset_s3(pdev);
8926                 break;
8927         case LPFC_PCI_DEV_OC:
8928                 rc = lpfc_io_slot_reset_s4(pdev);
8929                 break;
8930         default:
8931                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8932                                 "1428 Invalid PCI device group: 0x%x\n",
8933                                 phba->pci_dev_grp);
8934                 break;
8935         }
8936         return rc;
8937 }
8938
8939 /**
8940  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
8941  * @pdev: pointer to PCI device
8942  *
8943  * This routine is registered to the PCI subsystem for error handling. It
8944  * is called when kernel error recovery tells the lpfc driver that it is
8945  * OK to resume normal PCI operation after PCI bus error recovery. When
8946  * this routine is invoked, it dispatches the action to the proper SLI-3
8947  * or SLI-4 device io_resume routine, which will resume the device operation.
8948  **/
8949 static void
8950 lpfc_io_resume(struct pci_dev *pdev)
8951 {
8952         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8953         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8954
8955         switch (phba->pci_dev_grp) {
8956         case LPFC_PCI_DEV_LP:
8957                 lpfc_io_resume_s3(pdev);
8958                 break;
8959         case LPFC_PCI_DEV_OC:
8960                 lpfc_io_resume_s4(pdev);
8961                 break;
8962         default:
8963                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8964                                 "1429 Invalid PCI device group: 0x%x\n",
8965                                 phba->pci_dev_grp);
8966                 break;
8967         }
8968         return;
8969 }
8970
8971 static struct pci_device_id lpfc_id_table[] = {
8972         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
8973                 PCI_ANY_ID, PCI_ANY_ID, },
8974         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
8975                 PCI_ANY_ID, PCI_ANY_ID, },
8976         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
8977                 PCI_ANY_ID, PCI_ANY_ID, },
8978         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
8979                 PCI_ANY_ID, PCI_ANY_ID, },
8980         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
8981                 PCI_ANY_ID, PCI_ANY_ID, },
8982         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
8983                 PCI_ANY_ID, PCI_ANY_ID, },
8984         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
8985                 PCI_ANY_ID, PCI_ANY_ID, },
8986         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
8987                 PCI_ANY_ID, PCI_ANY_ID, },
8988         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
8989                 PCI_ANY_ID, PCI_ANY_ID, },
8990         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
8991                 PCI_ANY_ID, PCI_ANY_ID, },
8992         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
8993                 PCI_ANY_ID, PCI_ANY_ID, },
8994         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
8995                 PCI_ANY_ID, PCI_ANY_ID, },
8996         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
8997                 PCI_ANY_ID, PCI_ANY_ID, },
8998         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
8999                 PCI_ANY_ID, PCI_ANY_ID, },
9000         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
9001                 PCI_ANY_ID, PCI_ANY_ID, },
9002         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
9003                 PCI_ANY_ID, PCI_ANY_ID, },
9004         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
9005                 PCI_ANY_ID, PCI_ANY_ID, },
9006         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
9007                 PCI_ANY_ID, PCI_ANY_ID, },
9008         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
9009                 PCI_ANY_ID, PCI_ANY_ID, },
9010         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
9011                 PCI_ANY_ID, PCI_ANY_ID, },
9012         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
9013                 PCI_ANY_ID, PCI_ANY_ID, },
9014         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
9015                 PCI_ANY_ID, PCI_ANY_ID, },
9016         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
9017                 PCI_ANY_ID, PCI_ANY_ID, },
9018         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
9019                 PCI_ANY_ID, PCI_ANY_ID, },
9020         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
9021                 PCI_ANY_ID, PCI_ANY_ID, },
9022         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
9023                 PCI_ANY_ID, PCI_ANY_ID, },
9024         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
9025                 PCI_ANY_ID, PCI_ANY_ID, },
9026         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
9027                 PCI_ANY_ID, PCI_ANY_ID, },
9028         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
9029                 PCI_ANY_ID, PCI_ANY_ID, },
9030         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
9031                 PCI_ANY_ID, PCI_ANY_ID, },
9032         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
9033                 PCI_ANY_ID, PCI_ANY_ID, },
9034         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
9035                 PCI_ANY_ID, PCI_ANY_ID, },
9036         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
9037                 PCI_ANY_ID, PCI_ANY_ID, },
9038         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
9039                 PCI_ANY_ID, PCI_ANY_ID, },
9040         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
9041                 PCI_ANY_ID, PCI_ANY_ID, },
9042         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
9043                 PCI_ANY_ID, PCI_ANY_ID, },
9044         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
9045                 PCI_ANY_ID, PCI_ANY_ID, },
9046         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK,
9047                 PCI_ANY_ID, PCI_ANY_ID, },
9048         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT,
9049                 PCI_ANY_ID, PCI_ANY_ID, },
9050         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
9051                 PCI_ANY_ID, PCI_ANY_ID, },
9052         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
9053                 PCI_ANY_ID, PCI_ANY_ID, },
9054         { 0 }
9055 };
9056
9057 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
9058
9059 static struct pci_error_handlers lpfc_err_handler = {
9060         .error_detected = lpfc_io_error_detected,
9061         .slot_reset = lpfc_io_slot_reset,
9062         .resume = lpfc_io_resume,
9063 };
9064
9065 static struct pci_driver lpfc_driver = {
9066         .name           = LPFC_DRIVER_NAME,
9067         .id_table       = lpfc_id_table,
9068         .probe          = lpfc_pci_probe_one,
9069         .remove         = __devexit_p(lpfc_pci_remove_one),
9070         .suspend        = lpfc_pci_suspend_one,
9071         .resume         = lpfc_pci_resume_one,
9072         .err_handler    = &lpfc_err_handler,
9073 };
9074
9075 /**
9076  * lpfc_init - lpfc module initialization routine
9077  *
9078  * This routine is to be invoked when the lpfc module is loaded into the
9079  * kernel. The special kernel macro module_init() is used to indicate the
9080  * role of this routine to the kernel as lpfc module entry point.
9081  *
9082  * Return codes
9083  *   0 - successful
9084  *   -ENOMEM - FC attach transport failed
9085  *   all others - failed
9086  */
9087 static int __init
9088 lpfc_init(void)
9089 {
9090         int error = 0;
9091
9092         printk(LPFC_MODULE_DESC "\n");
9093         printk(LPFC_COPYRIGHT "\n");
9094
9095         if (lpfc_enable_npiv) {
9096                 lpfc_transport_functions.vport_create = lpfc_vport_create;
9097                 lpfc_transport_functions.vport_delete = lpfc_vport_delete;
9098         }
9099         lpfc_transport_template =
9100                                 fc_attach_transport(&lpfc_transport_functions);
9101         if (lpfc_transport_template == NULL)
9102                 return -ENOMEM;
9103         if (lpfc_enable_npiv) {
9104                 lpfc_vport_transport_template =
9105                         fc_attach_transport(&lpfc_vport_transport_functions);
9106                 if (lpfc_vport_transport_template == NULL) {
9107                         fc_release_transport(lpfc_transport_template);
9108                         return -ENOMEM;
9109                 }
9110         }
9111         error = pci_register_driver(&lpfc_driver);
9112         if (error) {
9113                 fc_release_transport(lpfc_transport_template);
9114                 if (lpfc_enable_npiv)
9115                         fc_release_transport(lpfc_vport_transport_template);
9116         }
9117
9118         return error;
9119 }
9120
9121 /**
9122  * lpfc_exit - lpfc module removal routine
9123  *
9124  * This routine is invoked when the lpfc module is removed from the kernel.
9125  * The special kernel macro module_exit() is used to indicate the role of
9126  * this routine to the kernel as lpfc module exit point.
9127  */
9128 static void __exit
9129 lpfc_exit(void)
9130 {
9131         pci_unregister_driver(&lpfc_driver);
9132         fc_release_transport(lpfc_transport_template);
9133         if (lpfc_enable_npiv)
9134                 fc_release_transport(lpfc_vport_transport_template);
9135         if (_dump_buf_data) {
9136                 printk(KERN_ERR "9062 BLKGRD: freeing %lu pages for "
9137                                 "_dump_buf_data at 0x%p\n",
9138                                 (1L << _dump_buf_data_order), _dump_buf_data);
9139                 free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
9140         }
9141
9142         if (_dump_buf_dif) {
9143                 printk(KERN_ERR "9049 BLKGRD: freeing %lu pages for "
9144                                 "_dump_buf_dif at 0x%p\n",
9145                                 (1L << _dump_buf_dif_order), _dump_buf_dif);
9146                 free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
9147         }
9148 }
9149
9150 module_init(lpfc_init);
9151 module_exit(lpfc_exit);
9152 MODULE_LICENSE("GPL");
9153 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
9154 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
9155 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);