drivers/scsi/lpfc/lpfc_bsg.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2009-2011 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  *                                                                 *
   8  * This program is free software; you can redistribute it and/or   *
   9  * modify it under the terms of version 2 of the GNU General       *
  10  * Public License as published by the Free Software Foundation.    *
  11  * This program is distributed in the hope that it will be useful. *
  12  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  13  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  14  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  15  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  16  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  17  * more details, a copy of which can be found in the file COPYING  *
  18  * included with this package.                                     *
  19  *******************************************************************/
  20
  21 #include <linux/interrupt.h>
  22 #include <linux/mempool.h>
  23 #include <linux/pci.h>
  24 #include <linux/slab.h>
  25 #include <linux/delay.h>
  26 #include <linux/list.h>
  27
  28 #include <scsi/scsi.h>
  29 #include <scsi/scsi_host.h>
  30 #include <scsi/scsi_transport_fc.h>
  31 #include <scsi/scsi_bsg_fc.h>
  32 #include <scsi/fc/fc_fs.h>
  33
  34 #include "lpfc_hw4.h"
  35 #include "lpfc_hw.h"
  36 #include "lpfc_sli.h"
  37 #include "lpfc_sli4.h"
  38 #include "lpfc_nl.h"
  39 #include "lpfc_bsg.h"
  40 #include "lpfc_disc.h"
  41 #include "lpfc_scsi.h"
  42 #include "lpfc.h"
  43 #include "lpfc_logmsg.h"
  44 #include "lpfc_crtn.h"
  45 #include "lpfc_vport.h"
  46 #include "lpfc_version.h"
  47
  48 struct lpfc_bsg_event {
  49         struct list_head node;
  50         struct kref kref;
  51         wait_queue_head_t wq;
  52
  53         /* Event type and waiter identifiers */
  54         uint32_t type_mask;
  55         uint32_t req_id;
  56         uint32_t reg_id;
  57
  58         /* next two flags are here for the auto-delete logic */
  59         unsigned long wait_time_stamp;
  60         int waiting;
  61
  62         /* seen and not seen events */
  63         struct list_head events_to_get;
  64         struct list_head events_to_see;
  65
  66         /* job waiting for this event to finish */
  67         struct fc_bsg_job *set_job;
  68 };
  69
  70 struct lpfc_bsg_iocb {
  71         struct lpfc_iocbq *cmdiocbq;
  72         struct lpfc_iocbq *rspiocbq;
  73         struct lpfc_dmabuf *bmp;
  74         struct lpfc_nodelist *ndlp;
  75
  76         /* job waiting for this iocb to finish */
  77         struct fc_bsg_job *set_job;
  78 };
  79
  80 struct lpfc_bsg_mbox {
  81         LPFC_MBOXQ_t *pmboxq;
  82         MAILBOX_t *mb;
  83         struct lpfc_dmabuf *dmabuffers; /* for BIU diags */
  84         uint8_t *ext; /* extended mailbox data */
  85         uint32_t mbOffset; /* from app */
  86         uint32_t inExtWLen; /* from app */
  87         uint32_t outExtWLen; /* from app */
  88
  89         /* job waiting for this mbox command to finish */
  90         struct fc_bsg_job *set_job;
  91 };
  92
  93 #define MENLO_DID 0x0000FC0E
  94
  95 struct lpfc_bsg_menlo {
  96         struct lpfc_iocbq *cmdiocbq;
  97         struct lpfc_iocbq *rspiocbq;
  98         struct lpfc_dmabuf *bmp;
  99
 100         /* job waiting for this iocb to finish */
 101         struct fc_bsg_job *set_job;
 102 };
 103
 104 #define TYPE_EVT        1
 105 #define TYPE_IOCB       2
 106 #define TYPE_MBOX       3
 107 #define TYPE_MENLO      4
 108 struct bsg_job_data {
 109         uint32_t type;
 110         union {
 111                 struct lpfc_bsg_event *evt;
 112                 struct lpfc_bsg_iocb iocb;
 113                 struct lpfc_bsg_mbox mbox;
 114                 struct lpfc_bsg_menlo menlo;
 115         } context_un;
 116 };
 117
 118 struct event_data {
 119         struct list_head node;
 120         uint32_t type;
 121         uint32_t immed_dat;
 122         void *data;
 123         uint32_t len;
 124 };
 125
 126 #define BUF_SZ_4K 4096
 127 #define SLI_CT_ELX_LOOPBACK 0x10
 128
 129 enum ELX_LOOPBACK_CMD {
 130         ELX_LOOPBACK_XRI_SETUP,
 131         ELX_LOOPBACK_DATA,
 132 };
 133
 134 #define ELX_LOOPBACK_HEADER_SZ \
 135         (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
 136
 137 struct lpfc_dmabufext {
 138         struct lpfc_dmabuf dma;
 139         uint32_t size;
 140         uint32_t flag;
 141 };
 142
 143 /**
 144  * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
 145  * @phba: Pointer to HBA context object.
 146  * @cmdiocbq: Pointer to command iocb.
 147  * @rspiocbq: Pointer to response iocb.
 148  *
 149  * This function is the completion handler for iocbs issued using
 150  * lpfc_bsg_send_mgmt_cmd function. This function is called by the
 151  * ring event handler function without any lock held. This function
 152  * can be called from both worker thread context and interrupt
 153  * context. This function also can be called from another thread which
 154  * cleans up the SLI layer objects.
 155  * This function copies the contents of the response iocb to the
 156  * response iocb memory object provided by the caller of
 157  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 158  * sleeps for the iocb completion.
 159  **/
 160 static void
 161 lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
 162                         struct lpfc_iocbq *cmdiocbq,
 163                         struct lpfc_iocbq *rspiocbq)
 164 {
 165         struct bsg_job_data *dd_data;
 166         struct fc_bsg_job *job;
 167         IOCB_t *rsp;
 168         struct lpfc_dmabuf *bmp;
 169         struct lpfc_nodelist *ndlp;
 170         struct lpfc_bsg_iocb *iocb;
 171         unsigned long flags;
 172         int rc = 0;
 173
 174         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 175         dd_data = cmdiocbq->context2;
 176         if (!dd_data) {
 177                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 178                 lpfc_sli_release_iocbq(phba, cmdiocbq);
 179                 return;
 180         }
 181
 182         iocb = &dd_data->context_un.iocb;
 183         job = iocb->set_job;
 184         job->dd_data = NULL; /* so timeout handler does not reply */
 185
 186         bmp = iocb->bmp;
 187         rsp = &rspiocbq->iocb;
 188         ndlp = cmdiocbq->context1;
 189
 190         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
 191                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
 192         pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
 193                      job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
 194
 195         if (rsp->ulpStatus) {
 196                 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
 197                         switch (rsp->un.ulpWord[4] & 0xff) {
 198                         case IOERR_SEQUENCE_TIMEOUT:
 199                                 rc = -ETIMEDOUT;
 200                                 break;
 201                         case IOERR_INVALID_RPI:
 202                                 rc = -EFAULT;
 203                                 break;
 204                         default:
 205                                 rc = -EACCES;
 206                                 break;
 207                         }
 208                 } else
 209                         rc = -EACCES;
 210         } else
 211                 job->reply->reply_payload_rcv_len =
 212                         rsp->un.genreq64.bdl.bdeSize;
 213
 214         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
 215         lpfc_sli_release_iocbq(phba, cmdiocbq);
 216         lpfc_nlp_put(ndlp);
 217         kfree(bmp);
 218         kfree(dd_data);
 219         /* make error code available to userspace */
 220         job->reply->result = rc;
 221         /* complete the job back to userspace */
 222         job->job_done(job);
 223         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 224         return;
 225 }
 226
 227 /**
 228  * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
 229  * @job: fc_bsg_job to handle
 230  **/
 231 static int
 232 lpfc_bsg_send_mgmt_cmd(struct fc_bsg_job *job)
 233 {
 234         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
 235         struct lpfc_hba *phba = vport->phba;
 236         struct lpfc_rport_data *rdata = job->rport->dd_data;
 237         struct lpfc_nodelist *ndlp = rdata->pnode;
 238         struct ulp_bde64 *bpl = NULL;
 239         uint32_t timeout;
 240         struct lpfc_iocbq *cmdiocbq = NULL;
 241         IOCB_t *cmd;
 242         struct lpfc_dmabuf *bmp = NULL;
 243         int request_nseg;
 244         int reply_nseg;
 245         struct scatterlist *sgel = NULL;
 246         int numbde;
 247         dma_addr_t busaddr;
 248         struct bsg_job_data *dd_data;
 249         uint32_t creg_val;
 250         int rc = 0;
 251         int iocb_stat;
 252
 253         /* in case no data is transferred */
 254         job->reply->reply_payload_rcv_len = 0;
 255
 256         /* allocate our bsg tracking structure */
 257         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
 258         if (!dd_data) {
 259                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 260                                 "2733 Failed allocation of dd_data\n");
 261                 rc = -ENOMEM;
 262                 goto no_dd_data;
 263         }
 264
 265         if (!lpfc_nlp_get(ndlp)) {
 266                 rc = -ENODEV;
 267                 goto no_ndlp;
 268         }
 269
 270         bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
 271         if (!bmp) {
 272                 rc = -ENOMEM;
 273                 goto free_ndlp;
 274         }
 275
 276         if (ndlp->nlp_flag & NLP_ELS_SND_MASK) {
 277                 rc = -ENODEV;
 278                 goto free_bmp;
 279         }
 280
 281         cmdiocbq = lpfc_sli_get_iocbq(phba);
 282         if (!cmdiocbq) {
 283                 rc = -ENOMEM;
 284                 goto free_bmp;
 285         }
 286
 287         cmd = &cmdiocbq->iocb;
 288         bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
 289         if (!bmp->virt) {
 290                 rc = -ENOMEM;
 291                 goto free_cmdiocbq;
 292         }
 293
 294         INIT_LIST_HEAD(&bmp->list);
 295         bpl = (struct ulp_bde64 *) bmp->virt;
 296         request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
 297                                   job->request_payload.sg_cnt, DMA_TO_DEVICE);
 298         for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
 299                 busaddr = sg_dma_address(sgel);
 300                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
 301                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
 302                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
 303                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
 304                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
 305                 bpl++;
 306         }
 307
 308         reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
 309                                 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
 310         for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
 311                 busaddr = sg_dma_address(sgel);
 312                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
 313                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
 314                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
 315                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
 316                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
 317                 bpl++;
 318         }
 319
 320         cmd->un.genreq64.bdl.ulpIoTag32 = 0;
 321         cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
 322         cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
 323         cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
 324         cmd->un.genreq64.bdl.bdeSize =
 325                 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
 326         cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
 327         cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
 328         cmd->un.genreq64.w5.hcsw.Dfctl = 0;
 329         cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
 330         cmd->un.genreq64.w5.hcsw.Type = FC_TYPE_CT;
 331         cmd->ulpBdeCount = 1;
 332         cmd->ulpLe = 1;
 333         cmd->ulpClass = CLASS3;
 334         cmd->ulpContext = ndlp->nlp_rpi;
 335         if (phba->sli_rev == LPFC_SLI_REV4)
 336                 cmd->ulpContext = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
 337         cmd->ulpOwner = OWN_CHIP;
 338         cmdiocbq->vport = phba->pport;
 339         cmdiocbq->context3 = bmp;
 340         cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
 341         timeout = phba->fc_ratov * 2;
 342         cmd->ulpTimeout = timeout;
 343
 344         cmdiocbq->iocb_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
 345         cmdiocbq->context1 = ndlp;
 346         cmdiocbq->context2 = dd_data;
 347         dd_data->type = TYPE_IOCB;
 348         dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
 349         dd_data->context_un.iocb.set_job = job;
 350         dd_data->context_un.iocb.bmp = bmp;
 351
 352         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
 353                 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
 354                         rc = -EIO ;
 355                         goto free_cmdiocbq;
 356                 }
 357                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 358                 writel(creg_val, phba->HCregaddr);
 359                 readl(phba->HCregaddr); /* flush */
 360         }
 361
 362         iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
 363         if (iocb_stat == IOCB_SUCCESS)
 364                 return 0; /* done for now */
 365         else if (iocb_stat == IOCB_BUSY)
 366                 rc = -EAGAIN;
 367         else
 368                 rc = -EIO;
 369
 370
 371         /* iocb failed so cleanup */
 372         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
 373                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
 374         pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
 375                      job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
 376
 377         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
 378
 379 free_cmdiocbq:
 380         lpfc_sli_release_iocbq(phba, cmdiocbq);
 381 free_bmp:
 382         kfree(bmp);
 383 free_ndlp:
 384         lpfc_nlp_put(ndlp);
 385 no_ndlp:
 386         kfree(dd_data);
 387 no_dd_data:
 388         /* make error code available to userspace */
 389         job->reply->result = rc;
 390         job->dd_data = NULL;
 391         return rc;
 392 }
 393
 394 /**
 395  * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
 396  * @phba: Pointer to HBA context object.
 397  * @cmdiocbq: Pointer to command iocb.
 398  * @rspiocbq: Pointer to response iocb.
 399  *
 400  * This function is the completion handler for iocbs issued using
 401  * lpfc_bsg_rport_els_cmp function. This function is called by the
 402  * ring event handler function without any lock held. This function
 403  * can be called from both worker thread context and interrupt
 404  * context. This function also can be called from other thread which
 405  * cleans up the SLI layer objects.
 406  * This function copies the contents of the response iocb to the
 407  * response iocb memory object provided by the caller of
 408  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 409  * sleeps for the iocb completion.
 410  **/
 411 static void
 412 lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
 413                         struct lpfc_iocbq *cmdiocbq,
 414                         struct lpfc_iocbq *rspiocbq)
 415 {
 416         struct bsg_job_data *dd_data;
 417         struct fc_bsg_job *job;
 418         IOCB_t *rsp;
 419         struct lpfc_nodelist *ndlp;
 420         struct lpfc_dmabuf *pbuflist = NULL;
 421         struct fc_bsg_ctels_reply *els_reply;
 422         uint8_t *rjt_data;
 423         unsigned long flags;
 424         int rc = 0;
 425
 426         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 427         dd_data = cmdiocbq->context1;
 428         /* normal completion and timeout crossed paths, already done */
 429         if (!dd_data) {
 430                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 431                 return;
 432         }
 433
 434         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
 435         if (cmdiocbq->context2 && rspiocbq)
 436                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
 437                        &rspiocbq->iocb, sizeof(IOCB_t));
 438
 439         job = dd_data->context_un.iocb.set_job;
 440         cmdiocbq = dd_data->context_un.iocb.cmdiocbq;
 441         rspiocbq = dd_data->context_un.iocb.rspiocbq;
 442         rsp = &rspiocbq->iocb;
 443         ndlp = dd_data->context_un.iocb.ndlp;
 444
 445         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
 446                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
 447         pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
 448                      job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
 449
 450         if (job->reply->result == -EAGAIN)
 451                 rc = -EAGAIN;
 452         else if (rsp->ulpStatus == IOSTAT_SUCCESS)
 453                 job->reply->reply_payload_rcv_len =
 454                         rsp->un.elsreq64.bdl.bdeSize;
 455         else if (rsp->ulpStatus == IOSTAT_LS_RJT) {
 456                 job->reply->reply_payload_rcv_len =
 457                         sizeof(struct fc_bsg_ctels_reply);
 458                 /* LS_RJT data returned in word 4 */
 459                 rjt_data = (uint8_t *)&rsp->un.ulpWord[4];
 460                 els_reply = &job->reply->reply_data.ctels_reply;
 461                 els_reply->status = FC_CTELS_STATUS_REJECT;
 462                 els_reply->rjt_data.action = rjt_data[3];
 463                 els_reply->rjt_data.reason_code = rjt_data[2];
 464                 els_reply->rjt_data.reason_explanation = rjt_data[1];
 465                 els_reply->rjt_data.vendor_unique = rjt_data[0];
 466         } else
 467                 rc = -EIO;
 468
 469         pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
 470         lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
 471         lpfc_sli_release_iocbq(phba, rspiocbq);
 472         lpfc_sli_release_iocbq(phba, cmdiocbq);
 473         lpfc_nlp_put(ndlp);
 474         kfree(dd_data);
 475         /* make error code available to userspace */
 476         job->reply->result = rc;
 477         job->dd_data = NULL;
 478         /* complete the job back to userspace */
 479         job->job_done(job);
 480         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 481         return;
 482 }
 483
 484 /**
 485  * lpfc_bsg_rport_els - send an ELS command from a bsg request
 486  * @job: fc_bsg_job to handle
 487  **/
 488 static int
 489 lpfc_bsg_rport_els(struct fc_bsg_job *job)
 490 {
 491         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
 492         struct lpfc_hba *phba = vport->phba;
 493         struct lpfc_rport_data *rdata = job->rport->dd_data;
 494         struct lpfc_nodelist *ndlp = rdata->pnode;
 495         uint32_t elscmd;
 496         uint32_t cmdsize;
 497         uint32_t rspsize;
 498         struct lpfc_iocbq *rspiocbq;
 499         struct lpfc_iocbq *cmdiocbq;
 500         IOCB_t *rsp;
 501         uint16_t rpi = 0;
 502         struct lpfc_dmabuf *pcmd;
 503         struct lpfc_dmabuf *prsp;
 504         struct lpfc_dmabuf *pbuflist = NULL;
 505         struct ulp_bde64 *bpl;
 506         int request_nseg;
 507         int reply_nseg;
 508         struct scatterlist *sgel = NULL;
 509         int numbde;
 510         dma_addr_t busaddr;
 511         struct bsg_job_data *dd_data;
 512         uint32_t creg_val;
 513         int rc = 0;
 514
 515         /* in case no data is transferred */
 516         job->reply->reply_payload_rcv_len = 0;
 517
 518         /* allocate our bsg tracking structure */
 519         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
 520         if (!dd_data) {
 521                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 522                                 "2735 Failed allocation of dd_data\n");
 523                 rc = -ENOMEM;
 524                 goto no_dd_data;
 525         }
 526
 527         if (!lpfc_nlp_get(ndlp)) {
 528                 rc = -ENODEV;
 529                 goto free_dd_data;
 530         }
 531
 532         elscmd = job->request->rqst_data.r_els.els_code;
 533         cmdsize = job->request_payload.payload_len;
 534         rspsize = job->reply_payload.payload_len;
 535         rspiocbq = lpfc_sli_get_iocbq(phba);
 536         if (!rspiocbq) {
 537                 lpfc_nlp_put(ndlp);
 538                 rc = -ENOMEM;
 539                 goto free_dd_data;
 540         }
 541
 542         rsp = &rspiocbq->iocb;
 543         rpi = ndlp->nlp_rpi;
 544
 545         cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
 546                                       ndlp->nlp_DID, elscmd);
 547         if (!cmdiocbq) {
 548                 rc = -EIO;
 549                 goto free_rspiocbq;
 550         }
 551
 552         /* prep els iocb set context1 to the ndlp, context2 to the command
 553          * dmabuf, context3 holds the data dmabuf
 554          */
 555         pcmd = (struct lpfc_dmabuf *) cmdiocbq->context2;
 556         prsp = (struct lpfc_dmabuf *) pcmd->list.next;
 557         lpfc_mbuf_free(phba, pcmd->virt, pcmd->phys);
 558         kfree(pcmd);
 559         lpfc_mbuf_free(phba, prsp->virt, prsp->phys);
 560         kfree(prsp);
 561         cmdiocbq->context2 = NULL;
 562
 563         pbuflist = (struct lpfc_dmabuf *) cmdiocbq->context3;
 564         bpl = (struct ulp_bde64 *) pbuflist->virt;
 565
 566         request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
 567                                   job->request_payload.sg_cnt, DMA_TO_DEVICE);
 568         for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
 569                 busaddr = sg_dma_address(sgel);
 570                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
 571                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
 572                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
 573                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
 574                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
 575                 bpl++;
 576         }
 577
 578         reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
 579                                 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
 580         for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
 581                 busaddr = sg_dma_address(sgel);
 582                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
 583                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
 584                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
 585                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
 586                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
 587                 bpl++;
 588         }
 589         cmdiocbq->iocb.un.elsreq64.bdl.bdeSize =
 590                 (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
 591         cmdiocbq->iocb.ulpContext = rpi;
 592         cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
 593         cmdiocbq->context1 = NULL;
 594         cmdiocbq->context2 = NULL;
 595
 596         cmdiocbq->iocb_cmpl = lpfc_bsg_rport_els_cmp;
 597         cmdiocbq->context1 = dd_data;
 598         cmdiocbq->context2 = rspiocbq;
 599         dd_data->type = TYPE_IOCB;
 600         dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
 601         dd_data->context_un.iocb.rspiocbq = rspiocbq;
 602         dd_data->context_un.iocb.set_job = job;
 603         dd_data->context_un.iocb.bmp = NULL;
 604         dd_data->context_un.iocb.ndlp = ndlp;
 605
 606         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
 607                 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
 608                         rc = -EIO;
 609                         goto linkdown_err;
 610                 }
 611                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 612                 writel(creg_val, phba->HCregaddr);
 613                 readl(phba->HCregaddr); /* flush */
 614         }
 615         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
 616         lpfc_nlp_put(ndlp);
 617         if (rc == IOCB_SUCCESS)
 618                 return 0; /* done for now */
 619         else if (rc == IOCB_BUSY)
 620                 rc = -EAGAIN;
 621         else
 622                 rc = -EIO;
 623
 624 linkdown_err:
 625         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
 626                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
 627         pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
 628                      job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
 629
 630         lpfc_mbuf_free(phba, pbuflist->virt, pbuflist->phys);
 631
 632         lpfc_sli_release_iocbq(phba, cmdiocbq);
 633
 634 free_rspiocbq:
 635         lpfc_sli_release_iocbq(phba, rspiocbq);
 636
 637 free_dd_data:
 638         kfree(dd_data);
 639
 640 no_dd_data:
 641         /* make error code available to userspace */
 642         job->reply->result = rc;
 643         job->dd_data = NULL;
 644         return rc;
 645 }
 646
 647 /**
 648  * lpfc_bsg_event_free - frees an allocated event structure
 649  * @kref: Pointer to a kref.
 650  *
 651  * Called from kref_put. Back cast the kref into an event structure address.
 652  * Free any events to get, delete associated nodes, free any events to see,
 653  * free any data then free the event itself.
 654  **/
 655 static void
 656 lpfc_bsg_event_free(struct kref *kref)
 657 {
 658         struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
 659                                                   kref);
 660         struct event_data *ed;
 661
 662         list_del(&evt->node);
 663
 664         while (!list_empty(&evt->events_to_get)) {
 665                 ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
 666                 list_del(&ed->node);
 667                 kfree(ed->data);
 668                 kfree(ed);
 669         }
 670
 671         while (!list_empty(&evt->events_to_see)) {
 672                 ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
 673                 list_del(&ed->node);
 674                 kfree(ed->data);
 675                 kfree(ed);
 676         }
 677
 678         kfree(evt);
 679 }
 680
 681 /**
 682  * lpfc_bsg_event_ref - increments the kref for an event
 683  * @evt: Pointer to an event structure.
 684  **/
 685 static inline void
 686 lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
 687 {
 688         kref_get(&evt->kref);
 689 }
 690
 691 /**
 692  * lpfc_bsg_event_unref - Uses kref_put to free an event structure
 693  * @evt: Pointer to an event structure.
 694  **/
 695 static inline void
 696 lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
 697 {
 698         kref_put(&evt->kref, lpfc_bsg_event_free);
 699 }
 700
 701 /**
 702  * lpfc_bsg_event_new - allocate and initialize a event structure
 703  * @ev_mask: Mask of events.
 704  * @ev_reg_id: Event reg id.
 705  * @ev_req_id: Event request id.
 706  **/
 707 static struct lpfc_bsg_event *
 708 lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
 709 {
 710         struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);
 711
 712         if (!evt)
 713                 return NULL;
 714
 715         INIT_LIST_HEAD(&evt->events_to_get);
 716         INIT_LIST_HEAD(&evt->events_to_see);
 717         evt->type_mask = ev_mask;
 718         evt->req_id = ev_req_id;
 719         evt->reg_id = ev_reg_id;
 720         evt->wait_time_stamp = jiffies;
 721         init_waitqueue_head(&evt->wq);
 722         kref_init(&evt->kref);
 723         return evt;
 724 }
 725
 726 /**
 727  * diag_cmd_data_free - Frees an lpfc dma buffer extension
 728  * @phba: Pointer to HBA context object.
 729  * @mlist: Pointer to an lpfc dma buffer extension.
 730  **/
 731 static int
 732 diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
 733 {
 734         struct lpfc_dmabufext *mlast;
 735         struct pci_dev *pcidev;
 736         struct list_head head, *curr, *next;
 737
 738         if ((!mlist) || (!lpfc_is_link_up(phba) &&
 739                 (phba->link_flag & LS_LOOPBACK_MODE))) {
 740                 return 0;
 741         }
 742
 743         pcidev = phba->pcidev;
 744         list_add_tail(&head, &mlist->dma.list);
 745
 746         list_for_each_safe(curr, next, &head) {
 747                 mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
 748                 if (mlast->dma.virt)
 749                         dma_free_coherent(&pcidev->dev,
 750                                           mlast->size,
 751                                           mlast->dma.virt,
 752                                           mlast->dma.phys);
 753                 kfree(mlast);
 754         }
 755         return 0;
 756 }
 757
 758 /**
 759  * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
 760  * @phba:
 761  * @pring:
 762  * @piocbq:
 763  *
 764  * This function is called when an unsolicited CT command is received.  It
 765  * forwards the event to any processes registered to receive CT events.
 766  **/
 767 int
 768 lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 769                         struct lpfc_iocbq *piocbq)
 770 {
 771         uint32_t evt_req_id = 0;
 772         uint32_t cmd;
 773         uint32_t len;
 774         struct lpfc_dmabuf *dmabuf = NULL;
 775         struct lpfc_bsg_event *evt;
 776         struct event_data *evt_dat = NULL;
 777         struct lpfc_iocbq *iocbq;
 778         size_t offset = 0;
 779         struct list_head head;
 780         struct ulp_bde64 *bde;
 781         dma_addr_t dma_addr;
 782         int i;
 783         struct lpfc_dmabuf *bdeBuf1 = piocbq->context2;
 784         struct lpfc_dmabuf *bdeBuf2 = piocbq->context3;
 785         struct lpfc_hbq_entry *hbqe;
 786         struct lpfc_sli_ct_request *ct_req;
 787         struct fc_bsg_job *job = NULL;
 788         unsigned long flags;
 789         int size = 0;
 790
 791         INIT_LIST_HEAD(&head);
 792         list_add_tail(&head, &piocbq->list);
 793
 794         if (piocbq->iocb.ulpBdeCount == 0 ||
 795             piocbq->iocb.un.cont64[0].tus.f.bdeSize == 0)
 796                 goto error_ct_unsol_exit;
 797
 798         if (phba->link_state == LPFC_HBA_ERROR ||
 799                 (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)))
 800                 goto error_ct_unsol_exit;
 801
 802         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 803                 dmabuf = bdeBuf1;
 804         else {
 805                 dma_addr = getPaddr(piocbq->iocb.un.cont64[0].addrHigh,
 806                                     piocbq->iocb.un.cont64[0].addrLow);
 807                 dmabuf = lpfc_sli_ringpostbuf_get(phba, pring, dma_addr);
 808         }
 809         if (dmabuf == NULL)
 810                 goto error_ct_unsol_exit;
 811         ct_req = (struct lpfc_sli_ct_request *)dmabuf->virt;
 812         evt_req_id = ct_req->FsType;
 813         cmd = ct_req->CommandResponse.bits.CmdRsp;
 814         len = ct_req->CommandResponse.bits.Size;
 815         if (!(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED))
 816                 lpfc_sli_ringpostbuf_put(phba, pring, dmabuf);
 817
 818         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 819         list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
 820                 if (!(evt->type_mask & FC_REG_CT_EVENT) ||
 821                         evt->req_id != evt_req_id)
 822                         continue;
 823
 824                 lpfc_bsg_event_ref(evt);
 825                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 826                 evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
 827                 if (evt_dat == NULL) {
 828                         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 829                         lpfc_bsg_event_unref(evt);
 830                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 831                                         "2614 Memory allocation failed for "
 832                                         "CT event\n");
 833                         break;
 834                 }
 835
 836                 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
 837                         /* take accumulated byte count from the last iocbq */
 838                         iocbq = list_entry(head.prev, typeof(*iocbq), list);
 839                         evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
 840                 } else {
 841                         list_for_each_entry(iocbq, &head, list) {
 842                                 for (i = 0; i < iocbq->iocb.ulpBdeCount; i++)
 843                                         evt_dat->len +=
 844                                         iocbq->iocb.un.cont64[i].tus.f.bdeSize;
 845                         }
 846                 }
 847
 848                 evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
 849                 if (evt_dat->data == NULL) {
 850                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 851                                         "2615 Memory allocation failed for "
 852                                         "CT event data, size %d\n",
 853                                         evt_dat->len);
 854                         kfree(evt_dat);
 855                         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 856                         lpfc_bsg_event_unref(evt);
 857                         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 858                         goto error_ct_unsol_exit;
 859                 }
 860
 861                 list_for_each_entry(iocbq, &head, list) {
 862                         size = 0;
 863                         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
 864                                 bdeBuf1 = iocbq->context2;
 865                                 bdeBuf2 = iocbq->context3;
 866                         }
 867                         for (i = 0; i < iocbq->iocb.ulpBdeCount; i++) {
 868                                 if (phba->sli3_options &
 869                                     LPFC_SLI3_HBQ_ENABLED) {
 870                                         if (i == 0) {
 871                                                 hbqe = (struct lpfc_hbq_entry *)
 872                                                   &iocbq->iocb.un.ulpWord[0];
 873                                                 size = hbqe->bde.tus.f.bdeSize;
 874                                                 dmabuf = bdeBuf1;
 875                                         } else if (i == 1) {
 876                                                 hbqe = (struct lpfc_hbq_entry *)
 877                                                         &iocbq->iocb.unsli3.
 878                                                         sli3Words[4];
 879                                                 size = hbqe->bde.tus.f.bdeSize;
 880                                                 dmabuf = bdeBuf2;
 881                                         }
 882                                         if ((offset + size) > evt_dat->len)
 883                                                 size = evt_dat->len - offset;
 884                                 } else {
 885                                         size = iocbq->iocb.un.cont64[i].
 886                                                 tus.f.bdeSize;
 887                                         bde = &iocbq->iocb.un.cont64[i];
 888                                         dma_addr = getPaddr(bde->addrHigh,
 889                                                             bde->addrLow);
 890                                         dmabuf = lpfc_sli_ringpostbuf_get(phba,
 891                                                         pring, dma_addr);
 892                                 }
 893                                 if (!dmabuf) {
 894                                         lpfc_printf_log(phba, KERN_ERR,
 895                                                 LOG_LIBDFC, "2616 No dmabuf "
 896                                                 "found for iocbq 0x%p\n",
 897                                                 iocbq);
 898                                         kfree(evt_dat->data);
 899                                         kfree(evt_dat);
 900                                         spin_lock_irqsave(&phba->ct_ev_lock,
 901                                                 flags);
 902                                         lpfc_bsg_event_unref(evt);
 903                                         spin_unlock_irqrestore(
 904                                                 &phba->ct_ev_lock, flags);
 905                                         goto error_ct_unsol_exit;
 906                                 }
 907                                 memcpy((char *)(evt_dat->data) + offset,
 908                                        dmabuf->virt, size);
 909                                 offset += size;
 910                                 if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
 911                                     !(phba->sli3_options &
 912                                       LPFC_SLI3_HBQ_ENABLED)) {
 913                                         lpfc_sli_ringpostbuf_put(phba, pring,
 914                                                                  dmabuf);
 915                                 } else {
 916                                         switch (cmd) {
 917                                         case ELX_LOOPBACK_DATA:
 918                                                 diag_cmd_data_free(phba,
 919                                                 (struct lpfc_dmabufext *)
 920                                                         dmabuf);
 921                                                 break;
 922                                         case ELX_LOOPBACK_XRI_SETUP:
 923                                                 if ((phba->sli_rev ==
 924                                                         LPFC_SLI_REV2) ||
 925                                                         (phba->sli3_options &
 926                                                         LPFC_SLI3_HBQ_ENABLED
 927                                                         )) {
 928                                                         lpfc_in_buf_free(phba,
 929                                                                         dmabuf);
 930                                                 } else {
 931                                                         lpfc_post_buffer(phba,
 932                                                                          pring,
 933                                                                          1);
 934                                                 }
 935                                                 break;
 936                                         default:
 937                                                 if (!(phba->sli3_options &
 938                                                       LPFC_SLI3_HBQ_ENABLED))
 939                                                         lpfc_post_buffer(phba,
 940                                                                          pring,
 941                                                                          1);
 942                                                 break;
 943                                         }
 944                                 }
 945                         }
 946                 }
 947
 948                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
 949                 if (phba->sli_rev == LPFC_SLI_REV4) {
 950                         evt_dat->immed_dat = phba->ctx_idx;
 951                         phba->ctx_idx = (phba->ctx_idx + 1) % 64;
 952                         /* Provide warning for over-run of the ct_ctx array */
 953                         if (phba->ct_ctx[evt_dat->immed_dat].flags &
 954                             UNSOL_VALID)
 955                                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
 956                                                 "2717 CT context array entry "
 957                                                 "[%d] over-run: oxid:x%x, "
 958                                                 "sid:x%x\n", phba->ctx_idx,
 959                                                 phba->ct_ctx[
 960                                                     evt_dat->immed_dat].oxid,
 961                                                 phba->ct_ctx[
 962                                                     evt_dat->immed_dat].SID);
 963                         phba->ct_ctx[evt_dat->immed_dat].oxid =
 964                                                 piocbq->iocb.ulpContext;
 965                         phba->ct_ctx[evt_dat->immed_dat].SID =
 966                                 piocbq->iocb.un.rcvels.remoteID;
 967                         phba->ct_ctx[evt_dat->immed_dat].flags = UNSOL_VALID;
 968                 } else
 969                         evt_dat->immed_dat = piocbq->iocb.ulpContext;
 970
 971                 evt_dat->type = FC_REG_CT_EVENT;
 972                 list_add(&evt_dat->node, &evt->events_to_see);
 973                 if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
 974                         wake_up_interruptible(&evt->wq);
 975                         lpfc_bsg_event_unref(evt);
 976                         break;
 977                 }
 978
 979                 list_move(evt->events_to_see.prev, &evt->events_to_get);
 980                 lpfc_bsg_event_unref(evt);
 981
 982                 job = evt->set_job;
 983                 evt->set_job = NULL;
 984                 if (job) {
 985                         job->reply->reply_payload_rcv_len = size;
 986                         /* make error code available to userspace */
 987                         job->reply->result = 0;
 988                         job->dd_data = NULL;
 989                         /* complete the job back to userspace */
 990                         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 991                         job->job_done(job);
 992                         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 993                 }
 994         }
 995         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 996
 997 error_ct_unsol_exit:
 998         if (!list_empty(&head))
 999                 list_del(&head);
1000         if (evt_req_id == SLI_CT_ELX_LOOPBACK)
1001                 return 0;
1002         return 1;
1003 }
1004
1005 /**
1006  * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
1007  * @job: SET_EVENT fc_bsg_job
1008  **/
1009 static int
1010 lpfc_bsg_hba_set_event(struct fc_bsg_job *job)
1011 {
1012         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1013         struct lpfc_hba *phba = vport->phba;
1014         struct set_ct_event *event_req;
1015         struct lpfc_bsg_event *evt;
1016         int rc = 0;
1017         struct bsg_job_data *dd_data = NULL;
1018         uint32_t ev_mask;
1019         unsigned long flags;
1020
1021         if (job->request_len <
1022             sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
1023                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1024                                 "2612 Received SET_CT_EVENT below minimum "
1025                                 "size\n");
1026                 rc = -EINVAL;
1027                 goto job_error;
1028         }
1029
1030         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1031         if (dd_data == NULL) {
1032                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1033                                 "2734 Failed allocation of dd_data\n");
1034                 rc = -ENOMEM;
1035                 goto job_error;
1036         }
1037
1038         event_req = (struct set_ct_event *)
1039                 job->request->rqst_data.h_vendor.vendor_cmd;
1040         ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
1041                                 FC_REG_EVENT_MASK);
1042         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1043         list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1044                 if (evt->reg_id == event_req->ev_reg_id) {
1045                         lpfc_bsg_event_ref(evt);
1046                         evt->wait_time_stamp = jiffies;
1047                         break;
1048                 }
1049         }
1050         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1051
1052         if (&evt->node == &phba->ct_ev_waiters) {
1053                 /* no event waiting struct yet - first call */
1054                 evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
1055                                         event_req->ev_req_id);
1056                 if (!evt) {
1057                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1058                                         "2617 Failed allocation of event "
1059                                         "waiter\n");
1060                         rc = -ENOMEM;
1061                         goto job_error;
1062                 }
1063
1064                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1065                 list_add(&evt->node, &phba->ct_ev_waiters);
1066                 lpfc_bsg_event_ref(evt);
1067                 evt->wait_time_stamp = jiffies;
1068                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1069         }
1070
1071         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1072         evt->waiting = 1;
1073         dd_data->type = TYPE_EVT;
1074         dd_data->context_un.evt = evt;
1075         evt->set_job = job; /* for unsolicited command */
1076         job->dd_data = dd_data; /* for fc transport timeout callback*/
1077         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1078         return 0; /* call job done later */
1079
1080 job_error:
1081         if (dd_data != NULL)
1082                 kfree(dd_data);
1083
1084         job->dd_data = NULL;
1085         return rc;
1086 }
1087
1088 /**
1089  * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1090  * @job: GET_EVENT fc_bsg_job
1091  **/
1092 static int
1093 lpfc_bsg_hba_get_event(struct fc_bsg_job *job)
1094 {
1095         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1096         struct lpfc_hba *phba = vport->phba;
1097         struct get_ct_event *event_req;
1098         struct get_ct_event_reply *event_reply;
1099         struct lpfc_bsg_event *evt;
1100         struct event_data *evt_dat = NULL;
1101         unsigned long flags;
1102         uint32_t rc = 0;
1103
1104         if (job->request_len <
1105             sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1106                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1107                                 "2613 Received GET_CT_EVENT request below "
1108                                 "minimum size\n");
1109                 rc = -EINVAL;
1110                 goto job_error;
1111         }
1112
1113         event_req = (struct get_ct_event *)
1114                 job->request->rqst_data.h_vendor.vendor_cmd;
1115
1116         event_reply = (struct get_ct_event_reply *)
1117                 job->reply->reply_data.vendor_reply.vendor_rsp;
1118         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1119         list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1120                 if (evt->reg_id == event_req->ev_reg_id) {
1121                         if (list_empty(&evt->events_to_get))
1122                                 break;
1123                         lpfc_bsg_event_ref(evt);
1124                         evt->wait_time_stamp = jiffies;
1125                         evt_dat = list_entry(evt->events_to_get.prev,
1126                                              struct event_data, node);
1127                         list_del(&evt_dat->node);
1128                         break;
1129                 }
1130         }
1131         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1132
1133         /* The app may continue to ask for event data until it gets
1134          * an error indicating that there isn't anymore
1135          */
1136         if (evt_dat == NULL) {
1137                 job->reply->reply_payload_rcv_len = 0;
1138                 rc = -ENOENT;
1139                 goto job_error;
1140         }
1141
1142         if (evt_dat->len > job->request_payload.payload_len) {
1143                 evt_dat->len = job->request_payload.payload_len;
1144                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1145                                 "2618 Truncated event data at %d "
1146                                 "bytes\n",
1147                                 job->request_payload.payload_len);
1148         }
1149
1150         event_reply->type = evt_dat->type;
1151         event_reply->immed_data = evt_dat->immed_dat;
1152         if (evt_dat->len > 0)
1153                 job->reply->reply_payload_rcv_len =
1154                         sg_copy_from_buffer(job->request_payload.sg_list,
1155                                             job->request_payload.sg_cnt,
1156                                             evt_dat->data, evt_dat->len);
1157         else
1158                 job->reply->reply_payload_rcv_len = 0;
1159
1160         if (evt_dat) {
1161                 kfree(evt_dat->data);
1162                 kfree(evt_dat);
1163         }
1164
1165         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1166         lpfc_bsg_event_unref(evt);
1167         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1168         job->dd_data = NULL;
1169         job->reply->result = 0;
1170         job->job_done(job);
1171         return 0;
1172
1173 job_error:
1174         job->dd_data = NULL;
1175         job->reply->result = rc;
1176         return rc;
1177 }
1178
1179 /**
1180  * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1181  * @phba: Pointer to HBA context object.
1182  * @cmdiocbq: Pointer to command iocb.
1183  * @rspiocbq: Pointer to response iocb.
1184  *
1185  * This function is the completion handler for iocbs issued using
1186  * lpfc_issue_ct_rsp_cmp function. This function is called by the
1187  * ring event handler function without any lock held. This function
1188  * can be called from both worker thread context and interrupt
1189  * context. This function also can be called from other thread which
1190  * cleans up the SLI layer objects.
1191  * This function copy the contents of the response iocb to the
1192  * response iocb memory object provided by the caller of
1193  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1194  * sleeps for the iocb completion.
1195  **/
1196 static void
1197 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1198                         struct lpfc_iocbq *cmdiocbq,
1199                         struct lpfc_iocbq *rspiocbq)
1200 {
1201         struct bsg_job_data *dd_data;
1202         struct fc_bsg_job *job;
1203         IOCB_t *rsp;
1204         struct lpfc_dmabuf *bmp;
1205         struct lpfc_nodelist *ndlp;
1206         unsigned long flags;
1207         int rc = 0;
1208
1209         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1210         dd_data = cmdiocbq->context2;
1211         /* normal completion and timeout crossed paths, already done */
1212         if (!dd_data) {
1213                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1214                 return;
1215         }
1216
1217         job = dd_data->context_un.iocb.set_job;
1218         bmp = dd_data->context_un.iocb.bmp;
1219         rsp = &rspiocbq->iocb;
1220         ndlp = dd_data->context_un.iocb.ndlp;
1221
1222         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
1223                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
1224
1225         if (rsp->ulpStatus) {
1226                 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
1227                         switch (rsp->un.ulpWord[4] & 0xff) {
1228                         case IOERR_SEQUENCE_TIMEOUT:
1229                                 rc = -ETIMEDOUT;
1230                                 break;
1231                         case IOERR_INVALID_RPI:
1232                                 rc = -EFAULT;
1233                                 break;
1234                         default:
1235                                 rc = -EACCES;
1236                                 break;
1237                         }
1238                 } else
1239                         rc = -EACCES;
1240         } else
1241                 job->reply->reply_payload_rcv_len =
1242                         rsp->un.genreq64.bdl.bdeSize;
1243
1244         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1245         lpfc_sli_release_iocbq(phba, cmdiocbq);
1246         lpfc_nlp_put(ndlp);
1247         kfree(bmp);
1248         kfree(dd_data);
1249         /* make error code available to userspace */
1250         job->reply->result = rc;
1251         job->dd_data = NULL;
1252         /* complete the job back to userspace */
1253         job->job_done(job);
1254         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1255         return;
1256 }
1257
1258 /**
1259  * lpfc_issue_ct_rsp - issue a ct response
1260  * @phba: Pointer to HBA context object.
1261  * @job: Pointer to the job object.
1262  * @tag: tag index value into the ports context exchange array.
1263  * @bmp: Pointer to a dma buffer descriptor.
1264  * @num_entry: Number of enties in the bde.
1265  **/
1266 static int
1267 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct fc_bsg_job *job, uint32_t tag,
1268                   struct lpfc_dmabuf *bmp, int num_entry)
1269 {
1270         IOCB_t *icmd;
1271         struct lpfc_iocbq *ctiocb = NULL;
1272         int rc = 0;
1273         struct lpfc_nodelist *ndlp = NULL;
1274         struct bsg_job_data *dd_data;
1275         uint32_t creg_val;
1276
1277         /* allocate our bsg tracking structure */
1278         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1279         if (!dd_data) {
1280                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1281                                 "2736 Failed allocation of dd_data\n");
1282                 rc = -ENOMEM;
1283                 goto no_dd_data;
1284         }
1285
1286         /* Allocate buffer for  command iocb */
1287         ctiocb = lpfc_sli_get_iocbq(phba);
1288         if (!ctiocb) {
1289                 rc = -ENOMEM;
1290                 goto no_ctiocb;
1291         }
1292
1293         icmd = &ctiocb->iocb;
1294         icmd->un.xseq64.bdl.ulpIoTag32 = 0;
1295         icmd->un.xseq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
1296         icmd->un.xseq64.bdl.addrLow = putPaddrLow(bmp->phys);
1297         icmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
1298         icmd->un.xseq64.bdl.bdeSize = (num_entry * sizeof(struct ulp_bde64));
1299         icmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
1300         icmd->un.xseq64.w5.hcsw.Dfctl = 0;
1301         icmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_SOL_CTL;
1302         icmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
1303
1304         /* Fill in rest of iocb */
1305         icmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
1306         icmd->ulpBdeCount = 1;
1307         icmd->ulpLe = 1;
1308         icmd->ulpClass = CLASS3;
1309         if (phba->sli_rev == LPFC_SLI_REV4) {
1310                 /* Do not issue unsol response if oxid not marked as valid */
1311                 if (!(phba->ct_ctx[tag].flags & UNSOL_VALID)) {
1312                         rc = IOCB_ERROR;
1313                         goto issue_ct_rsp_exit;
1314                 }
1315                 icmd->ulpContext = phba->ct_ctx[tag].oxid;
1316                 ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1317                 if (!ndlp) {
1318                         lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1319                                  "2721 ndlp null for oxid %x SID %x\n",
1320                                         icmd->ulpContext,
1321                                         phba->ct_ctx[tag].SID);
1322                         rc = IOCB_ERROR;
1323                         goto issue_ct_rsp_exit;
1324                 }
1325
1326                 /* Check if the ndlp is active */
1327                 if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) {
1328                         rc = -IOCB_ERROR;
1329                         goto issue_ct_rsp_exit;
1330                 }
1331
1332                 /* get a refernece count so the ndlp doesn't go away while
1333                  * we respond
1334                  */
1335                 if (!lpfc_nlp_get(ndlp)) {
1336                         rc = -IOCB_ERROR;
1337                         goto issue_ct_rsp_exit;
1338                 }
1339
1340                 icmd->un.ulpWord[3] = ndlp->nlp_rpi;
1341                 if (phba->sli_rev == LPFC_SLI_REV4)
1342                         icmd->ulpContext =
1343                                 phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
1344
1345                 /* The exchange is done, mark the entry as invalid */
1346                 phba->ct_ctx[tag].flags &= ~UNSOL_VALID;
1347         } else
1348                 icmd->ulpContext = (ushort) tag;
1349
1350         icmd->ulpTimeout = phba->fc_ratov * 2;
1351
1352         /* Xmit CT response on exchange <xid> */
1353         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1354                         "2722 Xmit CT response on exchange x%x Data: x%x x%x\n",
1355                         icmd->ulpContext, icmd->ulpIoTag, phba->link_state);
1356
1357         ctiocb->iocb_cmpl = NULL;
1358         ctiocb->iocb_flag |= LPFC_IO_LIBDFC;
1359         ctiocb->vport = phba->pport;
1360         ctiocb->context3 = bmp;
1361
1362         ctiocb->iocb_cmpl = lpfc_issue_ct_rsp_cmp;
1363         ctiocb->context2 = dd_data;
1364         ctiocb->context1 = ndlp;
1365         dd_data->type = TYPE_IOCB;
1366         dd_data->context_un.iocb.cmdiocbq = ctiocb;
1367         dd_data->context_un.iocb.rspiocbq = NULL;
1368         dd_data->context_un.iocb.set_job = job;
1369         dd_data->context_un.iocb.bmp = bmp;
1370         dd_data->context_un.iocb.ndlp = ndlp;
1371
1372         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1373                 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1374                         rc = -IOCB_ERROR;
1375                         goto issue_ct_rsp_exit;
1376                 }
1377                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1378                 writel(creg_val, phba->HCregaddr);
1379                 readl(phba->HCregaddr); /* flush */
1380         }
1381
1382         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1383
1384         if (rc == IOCB_SUCCESS)
1385                 return 0; /* done for now */
1386
1387 issue_ct_rsp_exit:
1388         lpfc_sli_release_iocbq(phba, ctiocb);
1389 no_ctiocb:
1390         kfree(dd_data);
1391 no_dd_data:
1392         return rc;
1393 }
1394
1395 /**
1396  * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1397  * @job: SEND_MGMT_RESP fc_bsg_job
1398  **/
1399 static int
1400 lpfc_bsg_send_mgmt_rsp(struct fc_bsg_job *job)
1401 {
1402         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
1403         struct lpfc_hba *phba = vport->phba;
1404         struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1405                 job->request->rqst_data.h_vendor.vendor_cmd;
1406         struct ulp_bde64 *bpl;
1407         struct lpfc_dmabuf *bmp = NULL;
1408         struct scatterlist *sgel = NULL;
1409         int request_nseg;
1410         int numbde;
1411         dma_addr_t busaddr;
1412         uint32_t tag = mgmt_resp->tag;
1413         unsigned long reqbfrcnt =
1414                         (unsigned long)job->request_payload.payload_len;
1415         int rc = 0;
1416
1417         /* in case no data is transferred */
1418         job->reply->reply_payload_rcv_len = 0;
1419
1420         if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1421                 rc = -ERANGE;
1422                 goto send_mgmt_rsp_exit;
1423         }
1424
1425         bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1426         if (!bmp) {
1427                 rc = -ENOMEM;
1428                 goto send_mgmt_rsp_exit;
1429         }
1430
1431         bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1432         if (!bmp->virt) {
1433                 rc = -ENOMEM;
1434                 goto send_mgmt_rsp_free_bmp;
1435         }
1436
1437         INIT_LIST_HEAD(&bmp->list);
1438         bpl = (struct ulp_bde64 *) bmp->virt;
1439         request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
1440                                   job->request_payload.sg_cnt, DMA_TO_DEVICE);
1441         for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
1442                 busaddr = sg_dma_address(sgel);
1443                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
1444                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
1445                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
1446                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
1447                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
1448                 bpl++;
1449         }
1450
1451         rc = lpfc_issue_ct_rsp(phba, job, tag, bmp, request_nseg);
1452
1453         if (rc == IOCB_SUCCESS)
1454                 return 0; /* done for now */
1455
1456         /* TBD need to handle a timeout */
1457         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
1458                           job->request_payload.sg_cnt, DMA_TO_DEVICE);
1459         rc = -EACCES;
1460         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1461
1462 send_mgmt_rsp_free_bmp:
1463         kfree(bmp);
1464 send_mgmt_rsp_exit:
1465         /* make error code available to userspace */
1466         job->reply->result = rc;
1467         job->dd_data = NULL;
1468         return rc;
1469 }
1470
1471 /**
1472  * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode
1473  * @phba: Pointer to HBA context object.
1474  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1475  *
1476  * This function is responsible for preparing driver for diag loopback
1477  * on device.
1478  */
1479 static int
1480 lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba, struct fc_bsg_job *job)
1481 {
1482         struct lpfc_vport **vports;
1483         struct Scsi_Host *shost;
1484         struct lpfc_sli *psli;
1485         struct lpfc_sli_ring *pring;
1486         int i = 0;
1487
1488         psli = &phba->sli;
1489         if (!psli)
1490                 return -ENODEV;
1491
1492         pring = &psli->ring[LPFC_FCP_RING];
1493         if (!pring)
1494                 return -ENODEV;
1495
1496         if ((phba->link_state == LPFC_HBA_ERROR) ||
1497             (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1498             (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
1499                 return -EACCES;
1500
1501         vports = lpfc_create_vport_work_array(phba);
1502         if (vports) {
1503                 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1504                         shost = lpfc_shost_from_vport(vports[i]);
1505                         scsi_block_requests(shost);
1506                 }
1507                 lpfc_destroy_vport_work_array(phba, vports);
1508         } else {
1509                 shost = lpfc_shost_from_vport(phba->pport);
1510                 scsi_block_requests(shost);
1511         }
1512
1513         while (pring->txcmplq_cnt) {
1514                 if (i++ > 500)  /* wait up to 5 seconds */
1515                         break;
1516                 msleep(10);
1517         }
1518         return 0;
1519 }
1520
1521 /**
1522  * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode
1523  * @phba: Pointer to HBA context object.
1524  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1525  *
1526  * This function is responsible for driver exit processing of setting up
1527  * diag loopback mode on device.
1528  */
1529 static void
1530 lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba)
1531 {
1532         struct Scsi_Host *shost;
1533         struct lpfc_vport **vports;
1534         int i;
1535
1536         vports = lpfc_create_vport_work_array(phba);
1537         if (vports) {
1538                 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1539                         shost = lpfc_shost_from_vport(vports[i]);
1540                         scsi_unblock_requests(shost);
1541                 }
1542                 lpfc_destroy_vport_work_array(phba, vports);
1543         } else {
1544                 shost = lpfc_shost_from_vport(phba->pport);
1545                 scsi_unblock_requests(shost);
1546         }
1547         return;
1548 }
1549
1550 /**
1551  * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command
1552  * @phba: Pointer to HBA context object.
1553  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1554  *
1555  * This function is responsible for placing an sli3  port into diagnostic
1556  * loopback mode in order to perform a diagnostic loopback test.
1557  * All new scsi requests are blocked, a small delay is used to allow the
1558  * scsi requests to complete then the link is brought down. If the link is
1559  * is placed in loopback mode then scsi requests are again allowed
1560  * so the scsi mid-layer doesn't give up on the port.
1561  * All of this is done in-line.
1562  */
1563 static int
1564 lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct fc_bsg_job *job)
1565 {
1566         struct diag_mode_set *loopback_mode;
1567         uint32_t link_flags;
1568         uint32_t timeout;
1569         LPFC_MBOXQ_t *pmboxq;
1570         int mbxstatus;
1571         int i = 0;
1572         int rc = 0;
1573
1574         /* no data to return just the return code */
1575         job->reply->reply_payload_rcv_len = 0;
1576
1577         if (job->request_len < sizeof(struct fc_bsg_request) +
1578             sizeof(struct diag_mode_set)) {
1579                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1580                                 "2738 Received DIAG MODE request size:%d "
1581                                 "below the minimum size:%d\n",
1582                                 job->request_len,
1583                                 (int)(sizeof(struct fc_bsg_request) +
1584                                 sizeof(struct diag_mode_set)));
1585                 rc = -EINVAL;
1586                 goto job_error;
1587         }
1588
1589         rc = lpfc_bsg_diag_mode_enter(phba, job);
1590         if (rc)
1591                 goto job_error;
1592
1593         /* bring the link to diagnostic mode */
1594         loopback_mode = (struct diag_mode_set *)
1595                 job->request->rqst_data.h_vendor.vendor_cmd;
1596         link_flags = loopback_mode->type;
1597         timeout = loopback_mode->timeout * 100;
1598
1599         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1600         if (!pmboxq) {
1601                 rc = -ENOMEM;
1602                 goto loopback_mode_exit;
1603         }
1604         memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1605         pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1606         pmboxq->u.mb.mbxOwner = OWN_HOST;
1607
1608         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1609
1610         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1611                 /* wait for link down before proceeding */
1612                 i = 0;
1613                 while (phba->link_state != LPFC_LINK_DOWN) {
1614                         if (i++ > timeout) {
1615                                 rc = -ETIMEDOUT;
1616                                 goto loopback_mode_exit;
1617                         }
1618
1619                         msleep(10);
1620                 }
1621
1622                 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1623                 if (link_flags == INTERNAL_LOOP_BACK)
1624                         pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1625                 else
1626                         pmboxq->u.mb.un.varInitLnk.link_flags =
1627                                 FLAGS_TOPOLOGY_MODE_LOOP;
1628
1629                 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1630                 pmboxq->u.mb.mbxOwner = OWN_HOST;
1631
1632                 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1633                                                      LPFC_MBOX_TMO);
1634
1635                 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1636                         rc = -ENODEV;
1637                 else {
1638                         phba->link_flag |= LS_LOOPBACK_MODE;
1639                         /* wait for the link attention interrupt */
1640                         msleep(100);
1641
1642                         i = 0;
1643                         while (phba->link_state != LPFC_HBA_READY) {
1644                                 if (i++ > timeout) {
1645                                         rc = -ETIMEDOUT;
1646                                         break;
1647                                 }
1648
1649                                 msleep(10);
1650                         }
1651                 }
1652
1653         } else
1654                 rc = -ENODEV;
1655
1656 loopback_mode_exit:
1657         lpfc_bsg_diag_mode_exit(phba);
1658
1659         /*
1660          * Let SLI layer release mboxq if mbox command completed after timeout.
1661          */
1662         if (mbxstatus != MBX_TIMEOUT)
1663                 mempool_free(pmboxq, phba->mbox_mem_pool);
1664
1665 job_error:
1666         /* make error code available to userspace */
1667         job->reply->result = rc;
1668         /* complete the job back to userspace if no error */
1669         if (rc == 0)
1670                 job->job_done(job);
1671         return rc;
1672 }
1673
1674 /**
1675  * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state
1676  * @phba: Pointer to HBA context object.
1677  * @diag: Flag for set link to diag or nomral operation state.
1678  *
1679  * This function is responsible for issuing a sli4 mailbox command for setting
1680  * link to either diag state or normal operation state.
1681  */
1682 static int
1683 lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag)
1684 {
1685         LPFC_MBOXQ_t *pmboxq;
1686         struct lpfc_mbx_set_link_diag_state *link_diag_state;
1687         uint32_t req_len, alloc_len;
1688         int mbxstatus = MBX_SUCCESS, rc;
1689
1690         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1691         if (!pmboxq)
1692                 return -ENOMEM;
1693
1694         req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
1695                    sizeof(struct lpfc_sli4_cfg_mhdr));
1696         alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1697                                 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
1698                                 req_len, LPFC_SLI4_MBX_EMBED);
1699         if (alloc_len != req_len) {
1700                 rc = -ENOMEM;
1701                 goto link_diag_state_set_out;
1702         }
1703         link_diag_state = &pmboxq->u.mqe.un.link_diag_state;
1704         bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req,
1705                phba->sli4_hba.link_state.number);
1706         bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req,
1707                phba->sli4_hba.link_state.type);
1708         if (diag)
1709                 bf_set(lpfc_mbx_set_diag_state_diag,
1710                        &link_diag_state->u.req, 1);
1711         else
1712                 bf_set(lpfc_mbx_set_diag_state_diag,
1713                        &link_diag_state->u.req, 0);
1714
1715         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1716
1717         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0))
1718                 rc = 0;
1719         else
1720                 rc = -ENODEV;
1721
1722 link_diag_state_set_out:
1723         if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1724                 mempool_free(pmboxq, phba->mbox_mem_pool);
1725
1726         return rc;
1727 }
1728
1729 /**
1730  * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command
1731  * @phba: Pointer to HBA context object.
1732  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1733  *
1734  * This function is responsible for placing an sli4 port into diagnostic
1735  * loopback mode in order to perform a diagnostic loopback test.
1736  */
1737 static int
1738 lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct fc_bsg_job *job)
1739 {
1740         struct diag_mode_set *loopback_mode;
1741         uint32_t link_flags, timeout, req_len, alloc_len;
1742         struct lpfc_mbx_set_link_diag_loopback *link_diag_loopback;
1743         LPFC_MBOXQ_t *pmboxq = NULL;
1744         int mbxstatus, i, rc = 0;
1745
1746         /* no data to return just the return code */
1747         job->reply->reply_payload_rcv_len = 0;
1748
1749         if (job->request_len < sizeof(struct fc_bsg_request) +
1750             sizeof(struct diag_mode_set)) {
1751                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1752                                 "3011 Received DIAG MODE request size:%d "
1753                                 "below the minimum size:%d\n",
1754                                 job->request_len,
1755                                 (int)(sizeof(struct fc_bsg_request) +
1756                                 sizeof(struct diag_mode_set)));
1757                 rc = -EINVAL;
1758                 goto job_error;
1759         }
1760
1761         rc = lpfc_bsg_diag_mode_enter(phba, job);
1762         if (rc)
1763                 goto job_error;
1764
1765         /* bring the link to diagnostic mode */
1766         loopback_mode = (struct diag_mode_set *)
1767                 job->request->rqst_data.h_vendor.vendor_cmd;
1768         link_flags = loopback_mode->type;
1769         timeout = loopback_mode->timeout * 100;
1770
1771         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
1772         if (rc)
1773                 goto loopback_mode_exit;
1774
1775         /* wait for link down before proceeding */
1776         i = 0;
1777         while (phba->link_state != LPFC_LINK_DOWN) {
1778                 if (i++ > timeout) {
1779                         rc = -ETIMEDOUT;
1780                         goto loopback_mode_exit;
1781                 }
1782                 msleep(10);
1783         }
1784         /* set up loopback mode */
1785         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1786         if (!pmboxq) {
1787                 rc = -ENOMEM;
1788                 goto loopback_mode_exit;
1789         }
1790         req_len = (sizeof(struct lpfc_mbx_set_link_diag_loopback) -
1791                    sizeof(struct lpfc_sli4_cfg_mhdr));
1792         alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1793                                 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_LOOPBACK,
1794                                 req_len, LPFC_SLI4_MBX_EMBED);
1795         if (alloc_len != req_len) {
1796                 rc = -ENOMEM;
1797                 goto loopback_mode_exit;
1798         }
1799         link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback;
1800         bf_set(lpfc_mbx_set_diag_state_link_num,
1801                &link_diag_loopback->u.req, phba->sli4_hba.link_state.number);
1802         bf_set(lpfc_mbx_set_diag_state_link_type,
1803                &link_diag_loopback->u.req, phba->sli4_hba.link_state.type);
1804         if (link_flags == INTERNAL_LOOP_BACK)
1805                 bf_set(lpfc_mbx_set_diag_lpbk_type,
1806                        &link_diag_loopback->u.req,
1807                        LPFC_DIAG_LOOPBACK_TYPE_INTERNAL);
1808         else
1809                 bf_set(lpfc_mbx_set_diag_lpbk_type,
1810                        &link_diag_loopback->u.req,
1811                        LPFC_DIAG_LOOPBACK_TYPE_EXTERNAL);
1812
1813         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1814         if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1815                 rc = -ENODEV;
1816         else {
1817                 phba->link_flag |= LS_LOOPBACK_MODE;
1818                 /* wait for the link attention interrupt */
1819                 msleep(100);
1820                 i = 0;
1821                 while (phba->link_state != LPFC_HBA_READY) {
1822                         if (i++ > timeout) {
1823                                 rc = -ETIMEDOUT;
1824                                 break;
1825                         }
1826                         msleep(10);
1827                 }
1828         }
1829
1830 loopback_mode_exit:
1831         lpfc_bsg_diag_mode_exit(phba);
1832
1833         /*
1834          * Let SLI layer release mboxq if mbox command completed after timeout.
1835          */
1836         if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1837                 mempool_free(pmboxq, phba->mbox_mem_pool);
1838
1839 job_error:
1840         /* make error code available to userspace */
1841         job->reply->result = rc;
1842         /* complete the job back to userspace if no error */
1843         if (rc == 0)
1844                 job->job_done(job);
1845         return rc;
1846 }
1847
1848 /**
1849  * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode
1850  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1851  *
1852  * This function is responsible for responding to check and dispatch bsg diag
1853  * command from the user to proper driver action routines.
1854  */
1855 static int
1856 lpfc_bsg_diag_loopback_mode(struct fc_bsg_job *job)
1857 {
1858         struct Scsi_Host *shost;
1859         struct lpfc_vport *vport;
1860         struct lpfc_hba *phba;
1861         int rc;
1862
1863         shost = job->shost;
1864         if (!shost)
1865                 return -ENODEV;
1866         vport = (struct lpfc_vport *)job->shost->hostdata;
1867         if (!vport)
1868                 return -ENODEV;
1869         phba = vport->phba;
1870         if (!phba)
1871                 return -ENODEV;
1872
1873         if (phba->sli_rev < LPFC_SLI_REV4)
1874                 rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job);
1875         else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
1876                  LPFC_SLI_INTF_IF_TYPE_2)
1877                 rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job);
1878         else
1879                 rc = -ENODEV;
1880
1881         return rc;
1882
1883 }
1884
1885 /**
1886  * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode
1887  * @job: LPFC_BSG_VENDOR_DIAG_MODE_END
1888  *
1889  * This function is responsible for responding to check and dispatch bsg diag
1890  * command from the user to proper driver action routines.
1891  */
1892 static int
1893 lpfc_sli4_bsg_diag_mode_end(struct fc_bsg_job *job)
1894 {
1895         struct Scsi_Host *shost;
1896         struct lpfc_vport *vport;
1897         struct lpfc_hba *phba;
1898         int rc;
1899
1900         shost = job->shost;
1901         if (!shost)
1902                 return -ENODEV;
1903         vport = (struct lpfc_vport *)job->shost->hostdata;
1904         if (!vport)
1905                 return -ENODEV;
1906         phba = vport->phba;
1907         if (!phba)
1908                 return -ENODEV;
1909
1910         if (phba->sli_rev < LPFC_SLI_REV4)
1911                 return -ENODEV;
1912         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
1913             LPFC_SLI_INTF_IF_TYPE_2)
1914                 return -ENODEV;
1915
1916         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
1917
1918         if (!rc)
1919                 rc = phba->lpfc_hba_init_link(phba, MBX_NOWAIT);
1920
1921         return rc;
1922 }
1923
1924 /**
1925  * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test
1926  * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST
1927  *
1928  * This function is to perform SLI4 diag link test request from the user
1929  * applicaiton.
1930  */
1931 static int
1932 lpfc_sli4_bsg_link_diag_test(struct fc_bsg_job *job)
1933 {
1934         struct Scsi_Host *shost;
1935         struct lpfc_vport *vport;
1936         struct lpfc_hba *phba;
1937         LPFC_MBOXQ_t *pmboxq;
1938         struct sli4_link_diag *link_diag_test_cmd;
1939         uint32_t req_len, alloc_len;
1940         uint32_t timeout;
1941         struct lpfc_mbx_run_link_diag_test *run_link_diag_test;
1942         union lpfc_sli4_cfg_shdr *shdr;
1943         uint32_t shdr_status, shdr_add_status;
1944         struct diag_status *diag_status_reply;
1945         int mbxstatus, rc = 0;
1946
1947         shost = job->shost;
1948         if (!shost) {
1949                 rc = -ENODEV;
1950                 goto job_error;
1951         }
1952         vport = (struct lpfc_vport *)job->shost->hostdata;
1953         if (!vport) {
1954                 rc = -ENODEV;
1955                 goto job_error;
1956         }
1957         phba = vport->phba;
1958         if (!phba) {
1959                 rc = -ENODEV;
1960                 goto job_error;
1961         }
1962
1963         if (phba->sli_rev < LPFC_SLI_REV4) {
1964                 rc = -ENODEV;
1965                 goto job_error;
1966         }
1967         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
1968             LPFC_SLI_INTF_IF_TYPE_2) {
1969                 rc = -ENODEV;
1970                 goto job_error;
1971         }
1972
1973         if (job->request_len < sizeof(struct fc_bsg_request) +
1974             sizeof(struct sli4_link_diag)) {
1975                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1976                                 "3013 Received LINK DIAG TEST request "
1977                                 " size:%d below the minimum size:%d\n",
1978                                 job->request_len,
1979                                 (int)(sizeof(struct fc_bsg_request) +
1980                                 sizeof(struct sli4_link_diag)));
1981                 rc = -EINVAL;
1982                 goto job_error;
1983         }
1984
1985         rc = lpfc_bsg_diag_mode_enter(phba, job);
1986         if (rc)
1987                 goto job_error;
1988
1989         link_diag_test_cmd = (struct sli4_link_diag *)
1990                          job->request->rqst_data.h_vendor.vendor_cmd;
1991         timeout = link_diag_test_cmd->timeout * 100;
1992
1993         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
1994
1995         if (rc)
1996                 goto job_error;
1997
1998         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1999         if (!pmboxq) {
2000                 rc = -ENOMEM;
2001                 goto link_diag_test_exit;
2002         }
2003
2004         req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
2005                    sizeof(struct lpfc_sli4_cfg_mhdr));
2006         alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
2007                                      LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
2008                                      req_len, LPFC_SLI4_MBX_EMBED);
2009         if (alloc_len != req_len) {
2010                 rc = -ENOMEM;
2011                 goto link_diag_test_exit;
2012         }
2013         run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
2014         bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
2015                phba->sli4_hba.link_state.number);
2016         bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req,
2017                phba->sli4_hba.link_state.type);
2018         bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req,
2019                link_diag_test_cmd->test_id);
2020         bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req,
2021                link_diag_test_cmd->loops);
2022         bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req,
2023                link_diag_test_cmd->test_version);
2024         bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req,
2025                link_diag_test_cmd->error_action);
2026
2027         mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2028
2029         shdr = (union lpfc_sli4_cfg_shdr *)
2030                 &pmboxq->u.mqe.un.sli4_config.header.cfg_shdr;
2031         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2032         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2033         if (shdr_status || shdr_add_status || mbxstatus) {
2034                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2035                                 "3010 Run link diag test mailbox failed with "
2036                                 "mbx_status x%x status x%x, add_status x%x\n",
2037                                 mbxstatus, shdr_status, shdr_add_status);
2038         }
2039
2040         diag_status_reply = (struct diag_status *)
2041                             job->reply->reply_data.vendor_reply.vendor_rsp;
2042
2043         if (job->reply_len <
2044             sizeof(struct fc_bsg_request) + sizeof(struct diag_status)) {
2045                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2046                                 "3012 Received Run link diag test reply "
2047                                 "below minimum size (%d): reply_len:%d\n",
2048                                 (int)(sizeof(struct fc_bsg_request) +
2049                                 sizeof(struct diag_status)),
2050                                 job->reply_len);
2051                 rc = -EINVAL;
2052                 goto job_error;
2053         }
2054
2055         diag_status_reply->mbox_status = mbxstatus;
2056         diag_status_reply->shdr_status = shdr_status;
2057         diag_status_reply->shdr_add_status = shdr_add_status;
2058
2059 link_diag_test_exit:
2060         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2061
2062         if (pmboxq)
2063                 mempool_free(pmboxq, phba->mbox_mem_pool);
2064
2065         lpfc_bsg_diag_mode_exit(phba);
2066
2067 job_error:
2068         /* make error code available to userspace */
2069         job->reply->result = rc;
2070         /* complete the job back to userspace if no error */
2071         if (rc == 0)
2072                 job->job_done(job);
2073         return rc;
2074 }
2075
2076 /**
2077  * lpfcdiag_loop_self_reg - obtains a remote port login id
2078  * @phba: Pointer to HBA context object
2079  * @rpi: Pointer to a remote port login id
2080  *
2081  * This function obtains a remote port login id so the diag loopback test
2082  * can send and receive its own unsolicited CT command.
2083  **/
2084 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
2085 {
2086         LPFC_MBOXQ_t *mbox;
2087         struct lpfc_dmabuf *dmabuff;
2088         int status;
2089
2090         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2091         if (!mbox)
2092                 return -ENOMEM;
2093
2094         if (phba->sli_rev == LPFC_SLI_REV4)
2095                 *rpi = lpfc_sli4_alloc_rpi(phba);
2096         status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
2097                               (uint8_t *)&phba->pport->fc_sparam, mbox, *rpi);
2098         if (status) {
2099                 mempool_free(mbox, phba->mbox_mem_pool);
2100                 if (phba->sli_rev == LPFC_SLI_REV4)
2101                         lpfc_sli4_free_rpi(phba, *rpi);
2102                 return -ENOMEM;
2103         }
2104
2105         dmabuff = (struct lpfc_dmabuf *) mbox->context1;
2106         mbox->context1 = NULL;
2107         mbox->context2 = NULL;
2108         status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2109
2110         if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2111                 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2112                 kfree(dmabuff);
2113                 if (status != MBX_TIMEOUT)
2114                         mempool_free(mbox, phba->mbox_mem_pool);
2115                 if (phba->sli_rev == LPFC_SLI_REV4)
2116                         lpfc_sli4_free_rpi(phba, *rpi);
2117                 return -ENODEV;
2118         }
2119
2120         *rpi = mbox->u.mb.un.varWords[0];
2121
2122         lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2123         kfree(dmabuff);
2124         mempool_free(mbox, phba->mbox_mem_pool);
2125         return 0;
2126 }
2127
2128 /**
2129  * lpfcdiag_loop_self_unreg - unregs from the rpi
2130  * @phba: Pointer to HBA context object
2131  * @rpi: Remote port login id
2132  *
2133  * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
2134  **/
2135 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
2136 {
2137         LPFC_MBOXQ_t *mbox;
2138         int status;
2139
2140         /* Allocate mboxq structure */
2141         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2142         if (mbox == NULL)
2143                 return -ENOMEM;
2144
2145         lpfc_unreg_login(phba, 0, rpi, mbox);
2146         status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2147
2148         if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2149                 if (status != MBX_TIMEOUT)
2150                         mempool_free(mbox, phba->mbox_mem_pool);
2151                 return -EIO;
2152         }
2153         mempool_free(mbox, phba->mbox_mem_pool);
2154         if (phba->sli_rev == LPFC_SLI_REV4)
2155                 lpfc_sli4_free_rpi(phba, rpi);
2156         return 0;
2157 }
2158
2159 /**
2160  * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
2161  * @phba: Pointer to HBA context object
2162  * @rpi: Remote port login id
2163  * @txxri: Pointer to transmit exchange id
2164  * @rxxri: Pointer to response exchabge id
2165  *
2166  * This function obtains the transmit and receive ids required to send
2167  * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
2168  * flags are used to the unsolicted response handler is able to process
2169  * the ct command sent on the same port.
2170  **/
2171 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
2172                          uint16_t *txxri, uint16_t * rxxri)
2173 {
2174         struct lpfc_bsg_event *evt;
2175         struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2176         IOCB_t *cmd, *rsp;
2177         struct lpfc_dmabuf *dmabuf;
2178         struct ulp_bde64 *bpl = NULL;
2179         struct lpfc_sli_ct_request *ctreq = NULL;
2180         int ret_val = 0;
2181         int time_left;
2182         int iocb_stat = 0;
2183         unsigned long flags;
2184
2185         *txxri = 0;
2186         *rxxri = 0;
2187         evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2188                                 SLI_CT_ELX_LOOPBACK);
2189         if (!evt)
2190                 return -ENOMEM;
2191
2192         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2193         list_add(&evt->node, &phba->ct_ev_waiters);
2194         lpfc_bsg_event_ref(evt);
2195         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2196
2197         cmdiocbq = lpfc_sli_get_iocbq(phba);
2198         rspiocbq = lpfc_sli_get_iocbq(phba);
2199
2200         dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2201         if (dmabuf) {
2202                 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
2203                 if (dmabuf->virt) {
2204                         INIT_LIST_HEAD(&dmabuf->list);
2205                         bpl = (struct ulp_bde64 *) dmabuf->virt;
2206                         memset(bpl, 0, sizeof(*bpl));
2207                         ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
2208                         bpl->addrHigh =
2209                                 le32_to_cpu(putPaddrHigh(dmabuf->phys +
2210                                         sizeof(*bpl)));
2211                         bpl->addrLow =
2212                                 le32_to_cpu(putPaddrLow(dmabuf->phys +
2213                                         sizeof(*bpl)));
2214                         bpl->tus.f.bdeFlags = 0;
2215                         bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
2216                         bpl->tus.w = le32_to_cpu(bpl->tus.w);
2217                 }
2218         }
2219
2220         if (cmdiocbq == NULL || rspiocbq == NULL ||
2221             dmabuf == NULL || bpl == NULL || ctreq == NULL ||
2222                 dmabuf->virt == NULL) {
2223                 ret_val = -ENOMEM;
2224                 goto err_get_xri_exit;
2225         }
2226
2227         cmd = &cmdiocbq->iocb;
2228         rsp = &rspiocbq->iocb;
2229
2230         memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2231
2232         ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2233         ctreq->RevisionId.bits.InId = 0;
2234         ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2235         ctreq->FsSubType = 0;
2236         ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
2237         ctreq->CommandResponse.bits.Size = 0;
2238
2239
2240         cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(dmabuf->phys);
2241         cmd->un.xseq64.bdl.addrLow = putPaddrLow(dmabuf->phys);
2242         cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2243         cmd->un.xseq64.bdl.bdeSize = sizeof(*bpl);
2244
2245         cmd->un.xseq64.w5.hcsw.Fctl = LA;
2246         cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2247         cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2248         cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2249
2250         cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CR;
2251         cmd->ulpBdeCount = 1;
2252         cmd->ulpLe = 1;
2253         cmd->ulpClass = CLASS3;
2254         cmd->ulpContext = rpi;
2255
2256         cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2257         cmdiocbq->vport = phba->pport;
2258
2259         iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2260                                 rspiocbq,
2261                                 (phba->fc_ratov * 2)
2262                                 + LPFC_DRVR_TIMEOUT);
2263         if (iocb_stat) {
2264                 ret_val = -EIO;
2265                 goto err_get_xri_exit;
2266         }
2267         *txxri =  rsp->ulpContext;
2268
2269         evt->waiting = 1;
2270         evt->wait_time_stamp = jiffies;
2271         time_left = wait_event_interruptible_timeout(
2272                 evt->wq, !list_empty(&evt->events_to_see),
2273                 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
2274         if (list_empty(&evt->events_to_see))
2275                 ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
2276         else {
2277                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2278                 list_move(evt->events_to_see.prev, &evt->events_to_get);
2279                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2280                 *rxxri = (list_entry(evt->events_to_get.prev,
2281                                      typeof(struct event_data),
2282                                      node))->immed_dat;
2283         }
2284         evt->waiting = 0;
2285
2286 err_get_xri_exit:
2287         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2288         lpfc_bsg_event_unref(evt); /* release ref */
2289         lpfc_bsg_event_unref(evt); /* delete */
2290         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2291
2292         if (dmabuf) {
2293                 if (dmabuf->virt)
2294                         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2295                 kfree(dmabuf);
2296         }
2297
2298         if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
2299                 lpfc_sli_release_iocbq(phba, cmdiocbq);
2300         if (rspiocbq)
2301                 lpfc_sli_release_iocbq(phba, rspiocbq);
2302         return ret_val;
2303 }
2304
2305 /**
2306  * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers
2307  * @phba: Pointer to HBA context object
2308  *
2309  * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and.
2310  * retruns the pointer to the buffer.
2311  **/
2312 static struct lpfc_dmabuf *
2313 lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba)
2314 {
2315         struct lpfc_dmabuf *dmabuf;
2316         struct pci_dev *pcidev = phba->pcidev;
2317
2318         /* allocate dma buffer struct */
2319         dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2320         if (!dmabuf)
2321                 return NULL;
2322
2323         INIT_LIST_HEAD(&dmabuf->list);
2324
2325         /* now, allocate dma buffer */
2326         dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2327                                           &(dmabuf->phys), GFP_KERNEL);
2328
2329         if (!dmabuf->virt) {
2330                 kfree(dmabuf);
2331                 return NULL;
2332         }
2333         memset((uint8_t *)dmabuf->virt, 0, BSG_MBOX_SIZE);
2334
2335         return dmabuf;
2336 }
2337
2338 /**
2339  * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer
2340  * @phba: Pointer to HBA context object.
2341  * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor.
2342  *
2343  * This routine just simply frees a dma buffer and its associated buffer
2344  * descriptor referred by @dmabuf.
2345  **/
2346 static void
2347 lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf)
2348 {
2349         struct pci_dev *pcidev = phba->pcidev;
2350
2351         if (!dmabuf)
2352                 return;
2353
2354         if (dmabuf->virt)
2355                 dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2356                                   dmabuf->virt, dmabuf->phys);
2357         kfree(dmabuf);
2358         return;
2359 }
2360
2361 /**
2362  * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers
2363  * @phba: Pointer to HBA context object.
2364  * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs.
2365  *
2366  * This routine just simply frees all dma buffers and their associated buffer
2367  * descriptors referred by @dmabuf_list.
2368  **/
2369 static void
2370 lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba,
2371                             struct list_head *dmabuf_list)
2372 {
2373         struct lpfc_dmabuf *dmabuf, *next_dmabuf;
2374
2375         if (list_empty(dmabuf_list))
2376                 return;
2377
2378         list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) {
2379                 list_del_init(&dmabuf->list);
2380                 lpfc_bsg_dma_page_free(phba, dmabuf);
2381         }
2382         return;
2383 }
2384
2385 /**
2386  * diag_cmd_data_alloc - fills in a bde struct with dma buffers
2387  * @phba: Pointer to HBA context object
2388  * @bpl: Pointer to 64 bit bde structure
2389  * @size: Number of bytes to process
2390  * @nocopydata: Flag to copy user data into the allocated buffer
2391  *
2392  * This function allocates page size buffers and populates an lpfc_dmabufext.
2393  * If allowed the user data pointed to with indataptr is copied into the kernel
2394  * memory. The chained list of page size buffers is returned.
2395  **/
2396 static struct lpfc_dmabufext *
2397 diag_cmd_data_alloc(struct lpfc_hba *phba,
2398                    struct ulp_bde64 *bpl, uint32_t size,
2399                    int nocopydata)
2400 {
2401         struct lpfc_dmabufext *mlist = NULL;
2402         struct lpfc_dmabufext *dmp;
2403         int cnt, offset = 0, i = 0;
2404         struct pci_dev *pcidev;
2405
2406         pcidev = phba->pcidev;
2407
2408         while (size) {
2409                 /* We get chunks of 4K */
2410                 if (size > BUF_SZ_4K)
2411                         cnt = BUF_SZ_4K;
2412                 else
2413                         cnt = size;
2414
2415                 /* allocate struct lpfc_dmabufext buffer header */
2416                 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
2417                 if (!dmp)
2418                         goto out;
2419
2420                 INIT_LIST_HEAD(&dmp->dma.list);
2421
2422                 /* Queue it to a linked list */
2423                 if (mlist)
2424                         list_add_tail(&dmp->dma.list, &mlist->dma.list);
2425                 else
2426                         mlist = dmp;
2427
2428                 /* allocate buffer */
2429                 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
2430                                                    cnt,
2431                                                    &(dmp->dma.phys),
2432                                                    GFP_KERNEL);
2433
2434                 if (!dmp->dma.virt)
2435                         goto out;
2436
2437                 dmp->size = cnt;
2438
2439                 if (nocopydata) {
2440                         bpl->tus.f.bdeFlags = 0;
2441                         pci_dma_sync_single_for_device(phba->pcidev,
2442                                 dmp->dma.phys, LPFC_BPL_SIZE, PCI_DMA_TODEVICE);
2443
2444                 } else {
2445                         memset((uint8_t *)dmp->dma.virt, 0, cnt);
2446                         bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2447                 }
2448
2449                 /* build buffer ptr list for IOCB */
2450                 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
2451                 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
2452                 bpl->tus.f.bdeSize = (ushort) cnt;
2453                 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2454                 bpl++;
2455
2456                 i++;
2457                 offset += cnt;
2458                 size -= cnt;
2459         }
2460
2461         mlist->flag = i;
2462         return mlist;
2463 out:
2464         diag_cmd_data_free(phba, mlist);
2465         return NULL;
2466 }
2467
2468 /**
2469  * lpfcdiag_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
2470  * @phba: Pointer to HBA context object
2471  * @rxxri: Receive exchange id
2472  * @len: Number of data bytes
2473  *
2474  * This function allocates and posts a data buffer of sufficient size to receive
2475  * an unsolicted CT command.
2476  **/
2477 static int lpfcdiag_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
2478                              size_t len)
2479 {
2480         struct lpfc_sli *psli = &phba->sli;
2481         struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
2482         struct lpfc_iocbq *cmdiocbq;
2483         IOCB_t *cmd = NULL;
2484         struct list_head head, *curr, *next;
2485         struct lpfc_dmabuf *rxbmp;
2486         struct lpfc_dmabuf *dmp;
2487         struct lpfc_dmabuf *mp[2] = {NULL, NULL};
2488         struct ulp_bde64 *rxbpl = NULL;
2489         uint32_t num_bde;
2490         struct lpfc_dmabufext *rxbuffer = NULL;
2491         int ret_val = 0;
2492         int iocb_stat;
2493         int i = 0;
2494
2495         cmdiocbq = lpfc_sli_get_iocbq(phba);
2496         rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2497         if (rxbmp != NULL) {
2498                 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2499                 if (rxbmp->virt) {
2500                         INIT_LIST_HEAD(&rxbmp->list);
2501                         rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2502                         rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
2503                 }
2504         }
2505
2506         if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer) {
2507                 ret_val = -ENOMEM;
2508                 goto err_post_rxbufs_exit;
2509         }
2510
2511         /* Queue buffers for the receive exchange */
2512         num_bde = (uint32_t)rxbuffer->flag;
2513         dmp = &rxbuffer->dma;
2514
2515         cmd = &cmdiocbq->iocb;
2516         i = 0;
2517
2518         INIT_LIST_HEAD(&head);
2519         list_add_tail(&head, &dmp->list);
2520         list_for_each_safe(curr, next, &head) {
2521                 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
2522                 list_del(curr);
2523
2524                 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2525                         mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
2526                         cmd->un.quexri64cx.buff.bde.addrHigh =
2527                                 putPaddrHigh(mp[i]->phys);
2528                         cmd->un.quexri64cx.buff.bde.addrLow =
2529                                 putPaddrLow(mp[i]->phys);
2530                         cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
2531                                 ((struct lpfc_dmabufext *)mp[i])->size;
2532                         cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
2533                         cmd->ulpCommand = CMD_QUE_XRI64_CX;
2534                         cmd->ulpPU = 0;
2535                         cmd->ulpLe = 1;
2536                         cmd->ulpBdeCount = 1;
2537                         cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
2538
2539                 } else {
2540                         cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
2541                         cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
2542                         cmd->un.cont64[i].tus.f.bdeSize =
2543                                 ((struct lpfc_dmabufext *)mp[i])->size;
2544                                         cmd->ulpBdeCount = ++i;
2545
2546                         if ((--num_bde > 0) && (i < 2))
2547                                 continue;
2548
2549                         cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
2550                         cmd->ulpLe = 1;
2551                 }
2552
2553                 cmd->ulpClass = CLASS3;
2554                 cmd->ulpContext = rxxri;
2555
2556                 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
2557                                                 0);
2558                 if (iocb_stat == IOCB_ERROR) {
2559                         diag_cmd_data_free(phba,
2560                                 (struct lpfc_dmabufext *)mp[0]);
2561                         if (mp[1])
2562                                 diag_cmd_data_free(phba,
2563                                           (struct lpfc_dmabufext *)mp[1]);
2564                         dmp = list_entry(next, struct lpfc_dmabuf, list);
2565                         ret_val = -EIO;
2566                         goto err_post_rxbufs_exit;
2567                 }
2568
2569                 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
2570                 if (mp[1]) {
2571                         lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
2572                         mp[1] = NULL;
2573                 }
2574
2575                 /* The iocb was freed by lpfc_sli_issue_iocb */
2576                 cmdiocbq = lpfc_sli_get_iocbq(phba);
2577                 if (!cmdiocbq) {
2578                         dmp = list_entry(next, struct lpfc_dmabuf, list);
2579                         ret_val = -EIO;
2580                         goto err_post_rxbufs_exit;
2581                 }
2582
2583                 cmd = &cmdiocbq->iocb;
2584                 i = 0;
2585         }
2586         list_del(&head);
2587
2588 err_post_rxbufs_exit:
2589
2590         if (rxbmp) {
2591                 if (rxbmp->virt)
2592                         lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2593                 kfree(rxbmp);
2594         }
2595
2596         if (cmdiocbq)
2597                 lpfc_sli_release_iocbq(phba, cmdiocbq);
2598         return ret_val;
2599 }
2600
2601 /**
2602  * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself
2603  * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
2604  *
2605  * This function receives a user data buffer to be transmitted and received on
2606  * the same port, the link must be up and in loopback mode prior
2607  * to being called.
2608  * 1. A kernel buffer is allocated to copy the user data into.
2609  * 2. The port registers with "itself".
2610  * 3. The transmit and receive exchange ids are obtained.
2611  * 4. The receive exchange id is posted.
2612  * 5. A new els loopback event is created.
2613  * 6. The command and response iocbs are allocated.
2614  * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
2615  *
2616  * This function is meant to be called n times while the port is in loopback
2617  * so it is the apps responsibility to issue a reset to take the port out
2618  * of loopback mode.
2619  **/
2620 static int
2621 lpfc_bsg_diag_loopback_run(struct fc_bsg_job *job)
2622 {
2623         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2624         struct lpfc_hba *phba = vport->phba;
2625         struct diag_mode_test *diag_mode;
2626         struct lpfc_bsg_event *evt;
2627         struct event_data *evdat;
2628         struct lpfc_sli *psli = &phba->sli;
2629         uint32_t size;
2630         uint32_t full_size;
2631         size_t segment_len = 0, segment_offset = 0, current_offset = 0;
2632         uint16_t rpi = 0;
2633         struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2634         IOCB_t *cmd, *rsp;
2635         struct lpfc_sli_ct_request *ctreq;
2636         struct lpfc_dmabuf *txbmp;
2637         struct ulp_bde64 *txbpl = NULL;
2638         struct lpfc_dmabufext *txbuffer = NULL;
2639         struct list_head head;
2640         struct lpfc_dmabuf  *curr;
2641         uint16_t txxri, rxxri;
2642         uint32_t num_bde;
2643         uint8_t *ptr = NULL, *rx_databuf = NULL;
2644         int rc = 0;
2645         int time_left;
2646         int iocb_stat;
2647         unsigned long flags;
2648         void *dataout = NULL;
2649         uint32_t total_mem;
2650
2651         /* in case no data is returned return just the return code */
2652         job->reply->reply_payload_rcv_len = 0;
2653
2654         if (job->request_len <
2655             sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
2656                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2657                                 "2739 Received DIAG TEST request below minimum "
2658                                 "size\n");
2659                 rc = -EINVAL;
2660                 goto loopback_test_exit;
2661         }
2662
2663         if (job->request_payload.payload_len !=
2664                 job->reply_payload.payload_len) {
2665                 rc = -EINVAL;
2666                 goto loopback_test_exit;
2667         }
2668
2669         diag_mode = (struct diag_mode_test *)
2670                 job->request->rqst_data.h_vendor.vendor_cmd;
2671
2672         if ((phba->link_state == LPFC_HBA_ERROR) ||
2673             (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
2674             (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
2675                 rc = -EACCES;
2676                 goto loopback_test_exit;
2677         }
2678
2679         if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
2680                 rc = -EACCES;
2681                 goto loopback_test_exit;
2682         }
2683
2684         size = job->request_payload.payload_len;
2685         full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
2686
2687         if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
2688                 rc = -ERANGE;
2689                 goto loopback_test_exit;
2690         }
2691
2692         if (full_size >= BUF_SZ_4K) {
2693                 /*
2694                  * Allocate memory for ioctl data. If buffer is bigger than 64k,
2695                  * then we allocate 64k and re-use that buffer over and over to
2696                  * xfer the whole block. This is because Linux kernel has a
2697                  * problem allocating more than 120k of kernel space memory. Saw
2698                  * problem with GET_FCPTARGETMAPPING...
2699                  */
2700                 if (size <= (64 * 1024))
2701                         total_mem = full_size;
2702                 else
2703                         total_mem = 64 * 1024;
2704         } else
2705                 /* Allocate memory for ioctl data */
2706                 total_mem = BUF_SZ_4K;
2707
2708         dataout = kmalloc(total_mem, GFP_KERNEL);
2709         if (dataout == NULL) {
2710                 rc = -ENOMEM;
2711                 goto loopback_test_exit;
2712         }
2713
2714         ptr = dataout;
2715         ptr += ELX_LOOPBACK_HEADER_SZ;
2716         sg_copy_to_buffer(job->request_payload.sg_list,
2717                                 job->request_payload.sg_cnt,
2718                                 ptr, size);
2719         rc = lpfcdiag_loop_self_reg(phba, &rpi);
2720         if (rc)
2721                 goto loopback_test_exit;
2722
2723         rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
2724         if (rc) {
2725                 lpfcdiag_loop_self_unreg(phba, rpi);
2726                 goto loopback_test_exit;
2727         }
2728
2729         rc = lpfcdiag_loop_post_rxbufs(phba, rxxri, full_size);
2730         if (rc) {
2731                 lpfcdiag_loop_self_unreg(phba, rpi);
2732                 goto loopback_test_exit;
2733         }
2734
2735         evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2736                                 SLI_CT_ELX_LOOPBACK);
2737         if (!evt) {
2738                 lpfcdiag_loop_self_unreg(phba, rpi);
2739                 rc = -ENOMEM;
2740                 goto loopback_test_exit;
2741         }
2742
2743         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2744         list_add(&evt->node, &phba->ct_ev_waiters);
2745         lpfc_bsg_event_ref(evt);
2746         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2747
2748         cmdiocbq = lpfc_sli_get_iocbq(phba);
2749         rspiocbq = lpfc_sli_get_iocbq(phba);
2750         txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2751
2752         if (txbmp) {
2753                 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
2754                 if (txbmp->virt) {
2755                         INIT_LIST_HEAD(&txbmp->list);
2756                         txbpl = (struct ulp_bde64 *) txbmp->virt;
2757                         txbuffer = diag_cmd_data_alloc(phba,
2758                                                         txbpl, full_size, 0);
2759                 }
2760         }
2761
2762         if (!cmdiocbq || !rspiocbq || !txbmp || !txbpl || !txbuffer ||
2763                 !txbmp->virt) {
2764                 rc = -ENOMEM;
2765                 goto err_loopback_test_exit;
2766         }
2767
2768         cmd = &cmdiocbq->iocb;
2769         rsp = &rspiocbq->iocb;
2770
2771         INIT_LIST_HEAD(&head);
2772         list_add_tail(&head, &txbuffer->dma.list);
2773         list_for_each_entry(curr, &head, list) {
2774                 segment_len = ((struct lpfc_dmabufext *)curr)->size;
2775                 if (current_offset == 0) {
2776                         ctreq = curr->virt;
2777                         memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2778                         ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2779                         ctreq->RevisionId.bits.InId = 0;
2780                         ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2781                         ctreq->FsSubType = 0;
2782                         ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_DATA;
2783                         ctreq->CommandResponse.bits.Size   = size;
2784                         segment_offset = ELX_LOOPBACK_HEADER_SZ;
2785                 } else
2786                         segment_offset = 0;
2787
2788                 BUG_ON(segment_offset >= segment_len);
2789                 memcpy(curr->virt + segment_offset,
2790                         ptr + current_offset,
2791                         segment_len - segment_offset);
2792
2793                 current_offset += segment_len - segment_offset;
2794                 BUG_ON(current_offset > size);
2795         }
2796         list_del(&head);
2797
2798         /* Build the XMIT_SEQUENCE iocb */
2799
2800         num_bde = (uint32_t)txbuffer->flag;
2801
2802         cmd->un.xseq64.bdl.addrHigh = putPaddrHigh(txbmp->phys);
2803         cmd->un.xseq64.bdl.addrLow = putPaddrLow(txbmp->phys);
2804         cmd->un.xseq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
2805         cmd->un.xseq64.bdl.bdeSize = (num_bde * sizeof(struct ulp_bde64));
2806
2807         cmd->un.xseq64.w5.hcsw.Fctl = (LS | LA);
2808         cmd->un.xseq64.w5.hcsw.Dfctl = 0;
2809         cmd->un.xseq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CTL;
2810         cmd->un.xseq64.w5.hcsw.Type = FC_TYPE_CT;
2811
2812         cmd->ulpCommand = CMD_XMIT_SEQUENCE64_CX;
2813         cmd->ulpBdeCount = 1;
2814         cmd->ulpLe = 1;
2815         cmd->ulpClass = CLASS3;
2816         cmd->ulpContext = txxri;
2817
2818         cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
2819         cmdiocbq->vport = phba->pport;
2820
2821         iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2822                                              rspiocbq, (phba->fc_ratov * 2) +
2823                                              LPFC_DRVR_TIMEOUT);
2824
2825         if ((iocb_stat != IOCB_SUCCESS) || (rsp->ulpStatus != IOCB_SUCCESS)) {
2826                 rc = -EIO;
2827                 goto err_loopback_test_exit;
2828         }
2829
2830         evt->waiting = 1;
2831         time_left = wait_event_interruptible_timeout(
2832                 evt->wq, !list_empty(&evt->events_to_see),
2833                 ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT) * HZ);
2834         evt->waiting = 0;
2835         if (list_empty(&evt->events_to_see))
2836                 rc = (time_left) ? -EINTR : -ETIMEDOUT;
2837         else {
2838                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2839                 list_move(evt->events_to_see.prev, &evt->events_to_get);
2840                 evdat = list_entry(evt->events_to_get.prev,
2841                                    typeof(*evdat), node);
2842                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2843                 rx_databuf = evdat->data;
2844                 if (evdat->len != full_size) {
2845                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2846                                 "1603 Loopback test did not receive expected "
2847                                 "data length. actual length 0x%x expected "
2848                                 "length 0x%x\n",
2849                                 evdat->len, full_size);
2850                         rc = -EIO;
2851                 } else if (rx_databuf == NULL)
2852                         rc = -EIO;
2853                 else {
2854                         rc = IOCB_SUCCESS;
2855                         /* skip over elx loopback header */
2856                         rx_databuf += ELX_LOOPBACK_HEADER_SZ;
2857                         job->reply->reply_payload_rcv_len =
2858                                 sg_copy_from_buffer(job->reply_payload.sg_list,
2859                                                     job->reply_payload.sg_cnt,
2860                                                     rx_databuf, size);
2861                         job->reply->reply_payload_rcv_len = size;
2862                 }
2863         }
2864
2865 err_loopback_test_exit:
2866         lpfcdiag_loop_self_unreg(phba, rpi);
2867
2868         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2869         lpfc_bsg_event_unref(evt); /* release ref */
2870         lpfc_bsg_event_unref(evt); /* delete */
2871         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2872
2873         if (cmdiocbq != NULL)
2874                 lpfc_sli_release_iocbq(phba, cmdiocbq);
2875
2876         if (rspiocbq != NULL)
2877                 lpfc_sli_release_iocbq(phba, rspiocbq);
2878
2879         if (txbmp != NULL) {
2880                 if (txbpl != NULL) {
2881                         if (txbuffer != NULL)
2882                                 diag_cmd_data_free(phba, txbuffer);
2883                         lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
2884                 }
2885                 kfree(txbmp);
2886         }
2887
2888 loopback_test_exit:
2889         kfree(dataout);
2890         /* make error code available to userspace */
2891         job->reply->result = rc;
2892         job->dd_data = NULL;
2893         /* complete the job back to userspace if no error */
2894         if (rc == 0)
2895                 job->job_done(job);
2896         return rc;
2897 }
2898
2899 /**
2900  * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
2901  * @job: GET_DFC_REV fc_bsg_job
2902  **/
2903 static int
2904 lpfc_bsg_get_dfc_rev(struct fc_bsg_job *job)
2905 {
2906         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
2907         struct lpfc_hba *phba = vport->phba;
2908         struct get_mgmt_rev *event_req;
2909         struct get_mgmt_rev_reply *event_reply;
2910         int rc = 0;
2911
2912         if (job->request_len <
2913             sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
2914                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2915                                 "2740 Received GET_DFC_REV request below "
2916                                 "minimum size\n");
2917                 rc = -EINVAL;
2918                 goto job_error;
2919         }
2920
2921         event_req = (struct get_mgmt_rev *)
2922                 job->request->rqst_data.h_vendor.vendor_cmd;
2923
2924         event_reply = (struct get_mgmt_rev_reply *)
2925                 job->reply->reply_data.vendor_reply.vendor_rsp;
2926
2927         if (job->reply_len <
2928             sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev_reply)) {
2929                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2930                                 "2741 Received GET_DFC_REV reply below "
2931                                 "minimum size\n");
2932                 rc = -EINVAL;
2933                 goto job_error;
2934         }
2935
2936         event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
2937         event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
2938 job_error:
2939         job->reply->result = rc;
2940         if (rc == 0)
2941                 job->job_done(job);
2942         return rc;
2943 }
2944
2945 /**
2946  * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler
2947  * @phba: Pointer to HBA context object.
2948  * @pmboxq: Pointer to mailbox command.
2949  *
2950  * This is completion handler function for mailbox commands issued from
2951  * lpfc_bsg_issue_mbox function. This function is called by the
2952  * mailbox event handler function with no lock held. This function
2953  * will wake up thread waiting on the wait queue pointed by context1
2954  * of the mailbox.
2955  **/
2956 void
2957 lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
2958 {
2959         struct bsg_job_data *dd_data;
2960         struct fc_bsg_job *job;
2961         uint32_t size;
2962         unsigned long flags;
2963         uint8_t *pmb, *pmb_buf;
2964
2965         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2966         dd_data = pmboxq->context1;
2967         /* job already timed out? */
2968         if (!dd_data) {
2969                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2970                 return;
2971         }
2972
2973         /*
2974          * The outgoing buffer is readily referred from the dma buffer,
2975          * just need to get header part from mailboxq structure.
2976          */
2977         pmb = (uint8_t *)&pmboxq->u.mb;
2978         pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
2979         memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
2980
2981         job = dd_data->context_un.mbox.set_job;
2982         if (job) {
2983                 size = job->reply_payload.payload_len;
2984                 job->reply->reply_payload_rcv_len =
2985                         sg_copy_from_buffer(job->reply_payload.sg_list,
2986                                             job->reply_payload.sg_cnt,
2987                                             pmb_buf, size);
2988                 /* need to hold the lock until we set job->dd_data to NULL
2989                  * to hold off the timeout handler returning to the mid-layer
2990                  * while we are still processing the job.
2991                  */
2992                 job->dd_data = NULL;
2993                 dd_data->context_un.mbox.set_job = NULL;
2994                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2995         } else {
2996                 dd_data->context_un.mbox.set_job = NULL;
2997                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2998         }
2999
3000         mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
3001         lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers);
3002         kfree(dd_data);
3003
3004         if (job) {
3005                 job->reply->result = 0;
3006                 job->job_done(job);
3007         }
3008         return;
3009 }
3010
3011 /**
3012  * lpfc_bsg_check_cmd_access - test for a supported mailbox command
3013  * @phba: Pointer to HBA context object.
3014  * @mb: Pointer to a mailbox object.
3015  * @vport: Pointer to a vport object.
3016  *
3017  * Some commands require the port to be offline, some may not be called from
3018  * the application.
3019  **/
3020 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
3021         MAILBOX_t *mb, struct lpfc_vport *vport)
3022 {
3023         /* return negative error values for bsg job */
3024         switch (mb->mbxCommand) {
3025         /* Offline only */
3026         case MBX_INIT_LINK:
3027         case MBX_DOWN_LINK:
3028         case MBX_CONFIG_LINK:
3029         case MBX_CONFIG_RING:
3030         case MBX_RESET_RING:
3031         case MBX_UNREG_LOGIN:
3032         case MBX_CLEAR_LA:
3033         case MBX_DUMP_CONTEXT:
3034         case MBX_RUN_DIAGS:
3035         case MBX_RESTART:
3036         case MBX_SET_MASK:
3037                 if (!(vport->fc_flag & FC_OFFLINE_MODE)) {
3038                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3039                                 "2743 Command 0x%x is illegal in on-line "
3040                                 "state\n",
3041                                 mb->mbxCommand);
3042                         return -EPERM;
3043                 }
3044         case MBX_WRITE_NV:
3045         case MBX_WRITE_VPARMS:
3046         case MBX_LOAD_SM:
3047         case MBX_READ_NV:
3048         case MBX_READ_CONFIG:
3049         case MBX_READ_RCONFIG:
3050         case MBX_READ_STATUS:
3051         case MBX_READ_XRI:
3052         case MBX_READ_REV:
3053         case MBX_READ_LNK_STAT:
3054         case MBX_DUMP_MEMORY:
3055         case MBX_DOWN_LOAD:
3056         case MBX_UPDATE_CFG:
3057         case MBX_KILL_BOARD:
3058         case MBX_LOAD_AREA:
3059         case MBX_LOAD_EXP_ROM:
3060         case MBX_BEACON:
3061         case MBX_DEL_LD_ENTRY:
3062         case MBX_SET_DEBUG:
3063         case MBX_WRITE_WWN:
3064         case MBX_SLI4_CONFIG:
3065         case MBX_READ_EVENT_LOG:
3066         case MBX_READ_EVENT_LOG_STATUS:
3067         case MBX_WRITE_EVENT_LOG:
3068         case MBX_PORT_CAPABILITIES:
3069         case MBX_PORT_IOV_CONTROL:
3070         case MBX_RUN_BIU_DIAG64:
3071                 break;
3072         case MBX_SET_VARIABLE:
3073                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3074                         "1226 mbox: set_variable 0x%x, 0x%x\n",
3075                         mb->un.varWords[0],
3076                         mb->un.varWords[1]);
3077                 if ((mb->un.varWords[0] == SETVAR_MLOMNT)
3078                         && (mb->un.varWords[1] == 1)) {
3079                         phba->wait_4_mlo_maint_flg = 1;
3080                 } else if (mb->un.varWords[0] == SETVAR_MLORST) {
3081                         phba->link_flag &= ~LS_LOOPBACK_MODE;
3082                         phba->fc_topology = LPFC_TOPOLOGY_PT_PT;
3083                 }
3084                 break;
3085         case MBX_READ_SPARM64:
3086         case MBX_READ_TOPOLOGY:
3087         case MBX_REG_LOGIN:
3088         case MBX_REG_LOGIN64:
3089         case MBX_CONFIG_PORT:
3090         case MBX_RUN_BIU_DIAG:
3091         default:
3092                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3093                         "2742 Unknown Command 0x%x\n",
3094                         mb->mbxCommand);
3095                 return -EPERM;
3096         }
3097
3098         return 0; /* ok */
3099 }
3100
3101 /**
3102  * lpfc_bsg_mbox_ext_cleanup - clean up context of multi-buffer mbox session
3103  * @phba: Pointer to HBA context object.
3104  *
3105  * This is routine clean up and reset BSG handling of multi-buffer mbox
3106  * command session.
3107  **/
3108 static void
3109 lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba)
3110 {
3111         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE)
3112                 return;
3113
3114         /* free all memory, including dma buffers */
3115         lpfc_bsg_dma_page_list_free(phba,
3116                                     &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3117         lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf);
3118         /* multi-buffer write mailbox command pass-through complete */
3119         memset((char *)&phba->mbox_ext_buf_ctx, 0,
3120                sizeof(struct lpfc_mbox_ext_buf_ctx));
3121         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3122
3123         return;
3124 }
3125
3126 /**
3127  * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl
3128  * @phba: Pointer to HBA context object.
3129  * @pmboxq: Pointer to mailbox command.
3130  *
3131  * This is routine handles BSG job for mailbox commands completions with
3132  * multiple external buffers.
3133  **/
3134 static struct fc_bsg_job *
3135 lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3136 {
3137         struct bsg_job_data *dd_data;
3138         struct fc_bsg_job *job;
3139         uint8_t *pmb, *pmb_buf;
3140         unsigned long flags;
3141         uint32_t size;
3142         int rc = 0;
3143
3144         spin_lock_irqsave(&phba->ct_ev_lock, flags);
3145         dd_data = pmboxq->context1;
3146         /* has the job already timed out? */
3147         if (!dd_data) {
3148                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3149                 job = NULL;
3150                 goto job_done_out;
3151         }
3152
3153         /*
3154          * The outgoing buffer is readily referred from the dma buffer,
3155          * just need to get header part from mailboxq structure.
3156          */
3157         pmb = (uint8_t *)&pmboxq->u.mb;
3158         pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3159         memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3160
3161         job = dd_data->context_un.mbox.set_job;
3162         if (job) {
3163                 size = job->reply_payload.payload_len;
3164                 job->reply->reply_payload_rcv_len =
3165                         sg_copy_from_buffer(job->reply_payload.sg_list,
3166                                             job->reply_payload.sg_cnt,
3167                                             pmb_buf, size);
3168                 /* result for successful */
3169                 job->reply->result = 0;
3170                 job->dd_data = NULL;
3171                 /* need to hold the lock util we set job->dd_data to NULL
3172                  * to hold off the timeout handler from midlayer to take
3173                  * any action.
3174                  */
3175                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3176                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3177                                 "2937 SLI_CONFIG ext-buffer maibox command "
3178                                 "(x%x/x%x) complete bsg job done, bsize:%d\n",
3179                                 phba->mbox_ext_buf_ctx.nembType,
3180                                 phba->mbox_ext_buf_ctx.mboxType, size);
3181         } else
3182                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3183
3184 job_done_out:
3185         if (!job)
3186                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3187                                 "2938 SLI_CONFIG ext-buffer maibox "
3188                                 "command (x%x/x%x) failure, rc:x%x\n",
3189                                 phba->mbox_ext_buf_ctx.nembType,
3190                                 phba->mbox_ext_buf_ctx.mboxType, rc);
3191         /* state change */
3192         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE;
3193         kfree(dd_data);
3194
3195         return job;
3196 }
3197
3198 /**
3199  * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox
3200  * @phba: Pointer to HBA context object.
3201  * @pmboxq: Pointer to mailbox command.
3202  *
3203  * This is completion handler function for mailbox read commands with multiple
3204  * external buffers.
3205  **/
3206 static void
3207 lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3208 {
3209         struct fc_bsg_job *job;
3210
3211         /* handle the BSG job with mailbox command */
3212         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_ABTS)
3213                 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3214
3215         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3216                         "2939 SLI_CONFIG ext-buffer rd maibox command "
3217                         "complete, ctxState:x%x, mbxStatus:x%x\n",
3218                         phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3219
3220         job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3221
3222         if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1)
3223                 lpfc_bsg_mbox_ext_session_reset(phba);
3224
3225         /* free base driver mailbox structure memory */
3226         mempool_free(pmboxq, phba->mbox_mem_pool);
3227
3228         /* complete the bsg job if we have it */
3229         if (job)
3230                 job->job_done(job);
3231
3232         return;
3233 }
3234
3235 /**
3236  * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox
3237  * @phba: Pointer to HBA context object.
3238  * @pmboxq: Pointer to mailbox command.
3239  *
3240  * This is completion handler function for mailbox write commands with multiple
3241  * external buffers.
3242  **/
3243 static void
3244 lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3245 {
3246         struct fc_bsg_job *job;
3247
3248         /* handle the BSG job with the mailbox command */
3249         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_ABTS)
3250                 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3251
3252         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3253                         "2940 SLI_CONFIG ext-buffer wr maibox command "
3254                         "complete, ctxState:x%x, mbxStatus:x%x\n",
3255                         phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3256
3257         job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3258
3259         /* free all memory, including dma buffers */
3260         mempool_free(pmboxq, phba->mbox_mem_pool);
3261         lpfc_bsg_mbox_ext_session_reset(phba);
3262
3263         /* complete the bsg job if we have it */
3264         if (job)
3265                 job->job_done(job);
3266
3267         return;
3268 }
3269
3270 static void
3271 lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3272                                 uint32_t index, struct lpfc_dmabuf *mbx_dmabuf,
3273                                 struct lpfc_dmabuf *ext_dmabuf)
3274 {
3275         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3276
3277         /* pointer to the start of mailbox command */
3278         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt;
3279
3280         if (nemb_tp == nemb_mse) {
3281                 if (index == 0) {
3282                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3283                                 mse[index].pa_hi =
3284                                 putPaddrHigh(mbx_dmabuf->phys +
3285                                              sizeof(MAILBOX_t));
3286                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3287                                 mse[index].pa_lo =
3288                                 putPaddrLow(mbx_dmabuf->phys +
3289                                             sizeof(MAILBOX_t));
3290                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3291                                         "2943 SLI_CONFIG(mse)[%d], "
3292                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3293                                         index,
3294                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3295                                         mse[index].buf_len,
3296                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3297                                         mse[index].pa_hi,
3298                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3299                                         mse[index].pa_lo);
3300                 } else {
3301                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3302                                 mse[index].pa_hi =
3303                                 putPaddrHigh(ext_dmabuf->phys);
3304                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3305                                 mse[index].pa_lo =
3306                                 putPaddrLow(ext_dmabuf->phys);
3307                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3308                                         "2944 SLI_CONFIG(mse)[%d], "
3309                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3310                                         index,
3311                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3312                                         mse[index].buf_len,
3313                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3314                                         mse[index].pa_hi,
3315                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3316                                         mse[index].pa_lo);
3317                 }
3318         } else {
3319                 if (index == 0) {
3320                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3321                                 hbd[index].pa_hi =
3322                                 putPaddrHigh(mbx_dmabuf->phys +
3323                                              sizeof(MAILBOX_t));
3324                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3325                                 hbd[index].pa_lo =
3326                                 putPaddrLow(mbx_dmabuf->phys +
3327                                             sizeof(MAILBOX_t));
3328                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3329                                         "3007 SLI_CONFIG(hbd)[%d], "
3330                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3331                                 index,
3332                                 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3333                                 &sli_cfg_mbx->un.
3334                                 sli_config_emb1_subsys.hbd[index]),
3335                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3336                                 hbd[index].pa_hi,
3337                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3338                                 hbd[index].pa_lo);
3339
3340                 } else {
3341                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3342                                 hbd[index].pa_hi =
3343                                 putPaddrHigh(ext_dmabuf->phys);
3344                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3345                                 hbd[index].pa_lo =
3346                                 putPaddrLow(ext_dmabuf->phys);
3347                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3348                                         "3008 SLI_CONFIG(hbd)[%d], "
3349                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3350                                 index,
3351                                 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3352                                 &sli_cfg_mbx->un.
3353                                 sli_config_emb1_subsys.hbd[index]),
3354                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3355                                 hbd[index].pa_hi,
3356                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3357                                 hbd[index].pa_lo);
3358                 }
3359         }
3360         return;
3361 }
3362
3363 /**
3364  * lpfc_bsg_sli_cfg_mse_read_cmd_ext - sli_config non-embedded mailbox cmd read
3365  * @phba: Pointer to HBA context object.
3366  * @mb: Pointer to a BSG mailbox object.
3367  * @nemb_tp: Enumerate of non-embedded mailbox command type.
3368  * @dmabuff: Pointer to a DMA buffer descriptor.
3369  *
3370  * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
3371  * non-embedded external bufffers.
3372  **/
3373 static int
3374 lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
3375                               enum nemb_type nemb_tp,
3376                               struct lpfc_dmabuf *dmabuf)
3377 {
3378         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3379         struct dfc_mbox_req *mbox_req;
3380         struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf;
3381         uint32_t ext_buf_cnt, ext_buf_index;
3382         struct lpfc_dmabuf *ext_dmabuf = NULL;
3383         struct bsg_job_data *dd_data = NULL;
3384         LPFC_MBOXQ_t *pmboxq = NULL;
3385         MAILBOX_t *pmb;
3386         uint8_t *pmbx;
3387         int rc, i;
3388
3389         mbox_req =
3390            (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
3391
3392         /* pointer to the start of mailbox command */
3393         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3394
3395         if (nemb_tp == nemb_mse) {
3396                 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3397                         &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3398                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3399                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3400                                         "2945 Handled SLI_CONFIG(mse) rd, "
3401                                         "ext_buf_cnt(%d) out of range(%d)\n",
3402                                         ext_buf_cnt,
3403                                         LPFC_MBX_SLI_CONFIG_MAX_MSE);
3404                         rc = -ERANGE;
3405                         goto job_error;
3406                 }
3407                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3408                                 "2941 Handled SLI_CONFIG(mse) rd, "
3409                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
3410         } else {
3411                 /* sanity check on interface type for support */
3412                 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3413                     LPFC_SLI_INTF_IF_TYPE_2) {
3414                         rc = -ENODEV;
3415                         goto job_error;
3416                 }
3417                 /* nemb_tp == nemb_hbd */
3418                 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
3419                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
3420                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3421                                         "2946 Handled SLI_CONFIG(hbd) rd, "
3422                                         "ext_buf_cnt(%d) out of range(%d)\n",
3423                                         ext_buf_cnt,
3424                                         LPFC_MBX_SLI_CONFIG_MAX_HBD);
3425                         rc = -ERANGE;
3426                         goto job_error;
3427                 }
3428                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3429                                 "2942 Handled SLI_CONFIG(hbd) rd, "
3430                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
3431         }
3432
3433         /* reject non-embedded mailbox command with none external buffer */
3434         if (ext_buf_cnt == 0) {
3435                 rc = -EPERM;
3436                 goto job_error;
3437         } else if (ext_buf_cnt > 1) {
3438                 /* additional external read buffers */
3439                 for (i = 1; i < ext_buf_cnt; i++) {
3440                         ext_dmabuf = lpfc_bsg_dma_page_alloc(phba);
3441                         if (!ext_dmabuf) {
3442                                 rc = -ENOMEM;
3443                                 goto job_error;
3444                         }
3445                         list_add_tail(&ext_dmabuf->list,
3446                                       &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3447                 }
3448         }
3449
3450         /* bsg tracking structure */
3451         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3452         if (!dd_data) {
3453                 rc = -ENOMEM;
3454                 goto job_error;
3455         }
3456
3457         /* mailbox command structure for base driver */
3458         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3459         if (!pmboxq) {
3460                 rc = -ENOMEM;
3461                 goto job_error;
3462         }
3463         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3464
3465         /* for the first external buffer */
3466         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
3467
3468         /* for the rest of external buffer descriptors if any */
3469         if (ext_buf_cnt > 1) {
3470                 ext_buf_index = 1;
3471                 list_for_each_entry_safe(curr_dmabuf, next_dmabuf,
3472                                 &phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) {
3473                         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp,
3474                                                 ext_buf_index, dmabuf,
3475                                                 curr_dmabuf);
3476                         ext_buf_index++;
3477                 }
3478         }
3479
3480         /* construct base driver mbox command */
3481         pmb = &pmboxq->u.mb;
3482         pmbx = (uint8_t *)dmabuf->virt;
3483         memcpy(pmb, pmbx, sizeof(*pmb));
3484         pmb->mbxOwner = OWN_HOST;
3485         pmboxq->vport = phba->pport;
3486
3487         /* multi-buffer handling context */
3488         phba->mbox_ext_buf_ctx.nembType = nemb_tp;
3489         phba->mbox_ext_buf_ctx.mboxType = mbox_rd;
3490         phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
3491         phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
3492         phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
3493         phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
3494
3495         /* callback for multi-buffer read mailbox command */
3496         pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl;
3497
3498         /* context fields to callback function */
3499         pmboxq->context1 = dd_data;
3500         dd_data->type = TYPE_MBOX;
3501         dd_data->context_un.mbox.pmboxq = pmboxq;
3502         dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
3503         dd_data->context_un.mbox.set_job = job;
3504         job->dd_data = dd_data;
3505
3506         /* state change */
3507         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
3508
3509         rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3510         if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
3511                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3512                                 "2947 Issued SLI_CONFIG ext-buffer "
3513                                 "maibox command, rc:x%x\n", rc);
3514                 return 1;
3515         }
3516         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3517                         "2948 Failed to issue SLI_CONFIG ext-buffer "
3518                         "maibox command, rc:x%x\n", rc);
3519         rc = -EPIPE;
3520
3521 job_error:
3522         if (pmboxq)
3523                 mempool_free(pmboxq, phba->mbox_mem_pool);
3524         lpfc_bsg_dma_page_list_free(phba,
3525                                     &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3526         kfree(dd_data);
3527         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
3528         return rc;
3529 }
3530
3531 /**
3532  * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write
3533  * @phba: Pointer to HBA context object.
3534  * @mb: Pointer to a BSG mailbox object.
3535  * @dmabuff: Pointer to a DMA buffer descriptor.
3536  *
3537  * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
3538  * non-embedded external bufffers.
3539  **/
3540 static int
3541 lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
3542                                enum nemb_type nemb_tp,
3543                                struct lpfc_dmabuf *dmabuf)
3544 {
3545         struct dfc_mbox_req *mbox_req;
3546         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3547         uint32_t ext_buf_cnt;
3548         struct bsg_job_data *dd_data = NULL;
3549         LPFC_MBOXQ_t *pmboxq = NULL;
3550         MAILBOX_t *pmb;
3551         uint8_t *mbx;
3552         int rc = 0, i;
3553
3554         mbox_req =
3555            (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
3556
3557         /* pointer to the start of mailbox command */
3558         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3559
3560         if (nemb_tp == nemb_mse) {
3561                 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3562                         &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3563                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3564                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3565                                         "2953 Handled SLI_CONFIG(mse) wr, "
3566                                         "ext_buf_cnt(%d) out of range(%d)\n",
3567                                         ext_buf_cnt,
3568                                         LPFC_MBX_SLI_CONFIG_MAX_MSE);
3569                         return -ERANGE;
3570                 }
3571                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3572                                 "2949 Handled SLI_CONFIG(mse) wr, "
3573                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
3574         } else {
3575                 /* sanity check on interface type for support */
3576                 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
3577                     LPFC_SLI_INTF_IF_TYPE_2)
3578                         return -ENODEV;
3579                 /* nemb_tp == nemb_hbd */
3580                 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
3581                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
3582                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3583                                         "2954 Handled SLI_CONFIG(hbd) wr, "
3584                                         "ext_buf_cnt(%d) out of range(%d)\n",
3585                                         ext_buf_cnt,
3586                                         LPFC_MBX_SLI_CONFIG_MAX_HBD);
3587                         return -ERANGE;
3588                 }
3589                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3590                                 "2950 Handled SLI_CONFIG(hbd) wr, "
3591                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
3592         }
3593
3594         if (ext_buf_cnt == 0)
3595                 return -EPERM;
3596
3597         /* for the first external buffer */
3598         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
3599
3600         /* log for looking forward */
3601         for (i = 1; i < ext_buf_cnt; i++) {
3602                 if (nemb_tp == nemb_mse)
3603                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3604                                 "2951 SLI_CONFIG(mse), buf[%d]-length:%d\n",
3605                                 i, sli_cfg_mbx->un.sli_config_emb0_subsys.
3606                                 mse[i].buf_len);
3607                 else
3608                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3609                                 "2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n",
3610                                 i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3611                                 &sli_cfg_mbx->un.sli_config_emb1_subsys.
3612                                 hbd[i]));
3613         }
3614
3615         /* multi-buffer handling context */
3616         phba->mbox_ext_buf_ctx.nembType = nemb_tp;
3617         phba->mbox_ext_buf_ctx.mboxType = mbox_wr;
3618         phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
3619         phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
3620         phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
3621         phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
3622
3623         if (ext_buf_cnt == 1) {
3624                 /* bsg tracking structure */
3625                 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3626                 if (!dd_data) {
3627                         rc = -ENOMEM;
3628                         goto job_error;
3629                 }
3630
3631                 /* mailbox command structure for base driver */
3632                 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3633                 if (!pmboxq) {
3634                         rc = -ENOMEM;
3635                         goto job_error;
3636                 }
3637                 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3638                 pmb = &pmboxq->u.mb;
3639                 mbx = (uint8_t *)dmabuf->virt;
3640                 memcpy(pmb, mbx, sizeof(*pmb));
3641                 pmb->mbxOwner = OWN_HOST;
3642                 pmboxq->vport = phba->pport;
3643
3644                 /* callback for multi-buffer read mailbox command */
3645                 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
3646
3647                 /* context fields to callback function */
3648                 pmboxq->context1 = dd_data;
3649                 dd_data->type = TYPE_MBOX;
3650                 dd_data->context_un.mbox.pmboxq = pmboxq;
3651                 dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx;
3652                 dd_data->context_un.mbox.set_job = job;
3653                 job->dd_data = dd_data;
3654
3655                 /* state change */
3656                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
3657
3658                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3659                 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
3660                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3661                                         "2955 Issued SLI_CONFIG ext-buffer "
3662                                         "maibox command, rc:x%x\n", rc);
3663                         return 1;
3664                 }
3665                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3666                                 "2956 Failed to issue SLI_CONFIG ext-buffer "
3667                                 "maibox command, rc:x%x\n", rc);
3668                 rc = -EPIPE;
3669         }
3670
3671 job_error:
3672         if (pmboxq)
3673                 mempool_free(pmboxq, phba->mbox_mem_pool);
3674         kfree(dd_data);
3675
3676         return rc;
3677 }
3678
3679 /**
3680  * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer
3681  * @phba: Pointer to HBA context object.
3682  * @mb: Pointer to a BSG mailbox object.
3683  * @dmabuff: Pointer to a DMA buffer descriptor.
3684  *
3685  * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
3686  * external bufffers, including both 0x9B with non-embedded MSEs and 0x9B
3687  * with embedded sussystem 0x1 and opcodes with external HBDs.
3688  **/
3689 static int
3690 lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
3691                              struct lpfc_dmabuf *dmabuf)
3692 {
3693         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3694         uint32_t subsys;
3695         uint32_t opcode;
3696         int rc = SLI_CONFIG_NOT_HANDLED;
3697
3698         /* state change */
3699         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST;
3700
3701         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3702
3703         if (!bsg_bf_get(lpfc_mbox_hdr_emb,
3704             &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
3705                 subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys,
3706                                     &sli_cfg_mbx->un.sli_config_emb0_subsys);
3707                 opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode,
3708                                     &sli_cfg_mbx->un.sli_config_emb0_subsys);
3709                 if (subsys == SLI_CONFIG_SUBSYS_FCOE) {
3710                         switch (opcode) {
3711                         case FCOE_OPCODE_READ_FCF:
3712                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3713                                                 "2957 Handled SLI_CONFIG "
3714                                                 "subsys_fcoe, opcode:x%x\n",
3715                                                 opcode);
3716                                 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
3717                                                         nemb_mse, dmabuf);
3718                                 break;
3719                         case FCOE_OPCODE_ADD_FCF:
3720                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3721                                                 "2958 Handled SLI_CONFIG "
3722                                                 "subsys_fcoe, opcode:x%x\n",
3723                                                 opcode);
3724                                 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
3725                                                         nemb_mse, dmabuf);
3726                                 break;
3727                         default:
3728                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3729                                                 "2959 Not handled SLI_CONFIG "
3730                                                 "subsys_fcoe, opcode:x%x\n",
3731                                                 opcode);
3732                                 rc = SLI_CONFIG_NOT_HANDLED;
3733                                 break;
3734                         }
3735                 } else {
3736                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3737                                         "2977 Handled SLI_CONFIG "
3738                                         "subsys:x%d, opcode:x%x\n",
3739                                         subsys, opcode);
3740                         rc = SLI_CONFIG_NOT_HANDLED;
3741                 }
3742         } else {
3743                 subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys,
3744                                     &sli_cfg_mbx->un.sli_config_emb1_subsys);
3745                 opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode,
3746                                     &sli_cfg_mbx->un.sli_config_emb1_subsys);
3747                 if (subsys == SLI_CONFIG_SUBSYS_COMN) {
3748                         switch (opcode) {
3749                         case COMN_OPCODE_READ_OBJECT:
3750                         case COMN_OPCODE_READ_OBJECT_LIST:
3751                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3752                                                 "2960 Handled SLI_CONFIG "
3753                                                 "subsys_comn, opcode:x%x\n",
3754                                                 opcode);
3755                                 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
3756                                                         nemb_hbd, dmabuf);
3757                                 break;
3758                         case COMN_OPCODE_WRITE_OBJECT:
3759                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3760                                                 "2961 Handled SLI_CONFIG "
3761                                                 "subsys_comn, opcode:x%x\n",
3762                                                 opcode);
3763                                 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
3764                                                         nemb_hbd, dmabuf);
3765                                 break;
3766                         default:
3767                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3768                                                 "2962 Not handled SLI_CONFIG "
3769                                                 "subsys_comn, opcode:x%x\n",
3770                                                 opcode);
3771                                 rc = SLI_CONFIG_NOT_HANDLED;
3772                                 break;
3773                         }
3774                 } else {
3775                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3776                                         "2978 Handled SLI_CONFIG "
3777                                         "subsys:x%d, opcode:x%x\n",
3778                                         subsys, opcode);
3779                         rc = SLI_CONFIG_NOT_HANDLED;
3780                 }
3781         }
3782         return rc;
3783 }
3784
3785 /**
3786  * lpfc_bsg_mbox_ext_abort_req - request to abort mbox command with ext buffers
3787  * @phba: Pointer to HBA context object.
3788  *
3789  * This routine is for requesting to abort a pass-through mailbox command with
3790  * multiple external buffers due to error condition.
3791  **/
3792 static void
3793 lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba)
3794 {
3795         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
3796                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
3797         else
3798                 lpfc_bsg_mbox_ext_session_reset(phba);
3799         return;
3800 }
3801
3802 /**
3803  * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer
3804  * @phba: Pointer to HBA context object.
3805  * @dmabuf: Pointer to a DMA buffer descriptor.
3806  *
3807  * This routine extracts the next mailbox read external buffer back to
3808  * user space through BSG.
3809  **/
3810 static int
3811 lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct fc_bsg_job *job)
3812 {
3813         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3814         struct lpfc_dmabuf *dmabuf;
3815         uint8_t *pbuf;
3816         uint32_t size;
3817         uint32_t index;
3818
3819         index = phba->mbox_ext_buf_ctx.seqNum;
3820         phba->mbox_ext_buf_ctx.seqNum++;
3821
3822         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
3823                         phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
3824
3825         if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
3826                 size = bsg_bf_get(lpfc_mbox_sli_config_mse_len,
3827                         &sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]);
3828                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3829                                 "2963 SLI_CONFIG (mse) ext-buffer rd get "
3830                                 "buffer[%d], size:%d\n", index, size);
3831         } else {
3832                 size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3833                         &sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]);
3834                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3835                                 "2964 SLI_CONFIG (hbd) ext-buffer rd get "
3836                                 "buffer[%d], size:%d\n", index, size);
3837         }
3838         if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list))
3839                 return -EPIPE;
3840         dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list,
3841                                   struct lpfc_dmabuf, list);
3842         list_del_init(&dmabuf->list);
3843         pbuf = (uint8_t *)dmabuf->virt;
3844         job->reply->reply_payload_rcv_len =
3845                 sg_copy_from_buffer(job->reply_payload.sg_list,
3846                                     job->reply_payload.sg_cnt,
3847                                     pbuf, size);
3848
3849         lpfc_bsg_dma_page_free(phba, dmabuf);
3850
3851         if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
3852                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3853                                 "2965 SLI_CONFIG (hbd) ext-buffer rd mbox "
3854                                 "command session done\n");
3855                 lpfc_bsg_mbox_ext_session_reset(phba);
3856         }
3857
3858         job->reply->result = 0;
3859         job->job_done(job);
3860
3861         return SLI_CONFIG_HANDLED;
3862 }
3863
3864 /**
3865  * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
3866  * @phba: Pointer to HBA context object.
3867  * @dmabuf: Pointer to a DMA buffer descriptor.
3868  *
3869  * This routine sets up the next mailbox read external buffer obtained
3870  * from user space through BSG.
3871  **/
3872 static int
3873 lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct fc_bsg_job *job,
3874                         struct lpfc_dmabuf *dmabuf)
3875 {
3876         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3877         struct bsg_job_data *dd_data = NULL;
3878         LPFC_MBOXQ_t *pmboxq = NULL;
3879         MAILBOX_t *pmb;
3880         enum nemb_type nemb_tp;
3881         uint8_t *pbuf;
3882         uint32_t size;
3883         uint32_t index;
3884         int rc;
3885
3886         index = phba->mbox_ext_buf_ctx.seqNum;
3887         phba->mbox_ext_buf_ctx.seqNum++;
3888         nemb_tp = phba->mbox_ext_buf_ctx.nembType;
3889
3890         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
3891                         phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
3892
3893         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3894         if (!dd_data) {
3895                 rc = -ENOMEM;
3896                 goto job_error;
3897         }
3898
3899         pbuf = (uint8_t *)dmabuf->virt;
3900         size = job->request_payload.payload_len;
3901         sg_copy_to_buffer(job->request_payload.sg_list,
3902                           job->request_payload.sg_cnt,
3903                           pbuf, size);
3904
3905         if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
3906                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3907                                 "2966 SLI_CONFIG (mse) ext-buffer wr set "
3908                                 "buffer[%d], size:%d\n",
3909                                 phba->mbox_ext_buf_ctx.seqNum, size);
3910
3911         } else {
3912                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3913                                 "2967 SLI_CONFIG (hbd) ext-buffer wr set "
3914                                 "buffer[%d], size:%d\n",
3915                                 phba->mbox_ext_buf_ctx.seqNum, size);
3916
3917         }
3918
3919         /* set up external buffer descriptor and add to external buffer list */
3920         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index,
3921                                         phba->mbox_ext_buf_ctx.mbx_dmabuf,
3922                                         dmabuf);
3923         list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3924
3925         if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
3926                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3927                                 "2968 SLI_CONFIG ext-buffer wr all %d "
3928                                 "ebuffers received\n",
3929                                 phba->mbox_ext_buf_ctx.numBuf);
3930                 /* mailbox command structure for base driver */
3931                 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3932                 if (!pmboxq) {
3933                         rc = -ENOMEM;
3934                         goto job_error;
3935                 }
3936                 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3937                 pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
3938                 pmb = &pmboxq->u.mb;
3939                 memcpy(pmb, pbuf, sizeof(*pmb));
3940                 pmb->mbxOwner = OWN_HOST;
3941                 pmboxq->vport = phba->pport;
3942
3943                 /* callback for multi-buffer write mailbox command */
3944                 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
3945
3946                 /* context fields to callback function */
3947                 pmboxq->context1 = dd_data;
3948                 dd_data->type = TYPE_MBOX;
3949                 dd_data->context_un.mbox.pmboxq = pmboxq;
3950                 dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf;
3951                 dd_data->context_un.mbox.set_job = job;
3952                 job->dd_data = dd_data;
3953
3954                 /* state change */
3955                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
3956
3957                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3958                 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
3959                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3960                                         "2969 Issued SLI_CONFIG ext-buffer "
3961                                         "maibox command, rc:x%x\n", rc);
3962                         return 1;
3963                 }
3964                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3965                                 "2970 Failed to issue SLI_CONFIG ext-buffer "
3966                                 "maibox command, rc:x%x\n", rc);
3967                 rc = -EPIPE;
3968                 goto job_error;
3969         }
3970
3971         /* wait for additoinal external buffers */
3972         job->reply->result = 0;
3973         job->job_done(job);
3974         return SLI_CONFIG_HANDLED;
3975
3976 job_error:
3977         lpfc_bsg_dma_page_free(phba, dmabuf);
3978         kfree(dd_data);
3979
3980         return rc;
3981 }
3982
3983 /**
3984  * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd
3985  * @phba: Pointer to HBA context object.
3986  * @mb: Pointer to a BSG mailbox object.
3987  * @dmabuff: Pointer to a DMA buffer descriptor.
3988  *
3989  * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox
3990  * command with multiple non-embedded external buffers.
3991  **/
3992 static int
3993 lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct fc_bsg_job *job,
3994                              struct lpfc_dmabuf *dmabuf)
3995 {
3996         int rc;
3997
3998         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3999                         "2971 SLI_CONFIG buffer (type:x%x)\n",
4000                         phba->mbox_ext_buf_ctx.mboxType);
4001
4002         if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) {
4003                 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) {
4004                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4005                                         "2972 SLI_CONFIG rd buffer state "
4006                                         "mismatch:x%x\n",
4007                                         phba->mbox_ext_buf_ctx.state);
4008                         lpfc_bsg_mbox_ext_abort(phba);
4009                         return -EPIPE;
4010                 }
4011                 rc = lpfc_bsg_read_ebuf_get(phba, job);
4012                 if (rc == SLI_CONFIG_HANDLED)
4013                         lpfc_bsg_dma_page_free(phba, dmabuf);
4014         } else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */
4015                 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) {
4016                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4017                                         "2973 SLI_CONFIG wr buffer state "
4018                                         "mismatch:x%x\n",
4019                                         phba->mbox_ext_buf_ctx.state);
4020                         lpfc_bsg_mbox_ext_abort(phba);
4021                         return -EPIPE;
4022                 }
4023                 rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf);
4024         }
4025         return rc;
4026 }
4027
4028 /**
4029  * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer
4030  * @phba: Pointer to HBA context object.
4031  * @mb: Pointer to a BSG mailbox object.
4032  * @dmabuff: Pointer to a DMA buffer descriptor.
4033  *
4034  * This routine checkes and handles non-embedded multi-buffer SLI_CONFIG
4035  * (0x9B) mailbox commands and external buffers.
4036  **/
4037 static int
4038 lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct fc_bsg_job *job,
4039                             struct lpfc_dmabuf *dmabuf)
4040 {
4041         struct dfc_mbox_req *mbox_req;
4042         int rc;
4043
4044         mbox_req =
4045            (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
4046
4047         /* mbox command with/without single external buffer */
4048         if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0)
4049                 return SLI_CONFIG_NOT_HANDLED;
4050
4051         /* mbox command and first external buffer */
4052         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) {
4053                 if (mbox_req->extSeqNum == 1) {
4054                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4055                                         "2974 SLI_CONFIG mailbox: tag:%d, "
4056                                         "seq:%d\n", mbox_req->extMboxTag,
4057                                         mbox_req->extSeqNum);
4058                         rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf);
4059                         return rc;
4060                 } else
4061                         goto sli_cfg_ext_error;
4062         }
4063
4064         /*
4065          * handle additional external buffers
4066          */
4067
4068         /* check broken pipe conditions */
4069         if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag)
4070                 goto sli_cfg_ext_error;
4071         if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf)
4072                 goto sli_cfg_ext_error;
4073         if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1)
4074                 goto sli_cfg_ext_error;
4075
4076         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4077                         "2975 SLI_CONFIG mailbox external buffer: "
4078                         "extSta:x%x, tag:%d, seq:%d\n",
4079                         phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag,
4080                         mbox_req->extSeqNum);
4081         rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf);
4082         return rc;
4083
4084 sli_cfg_ext_error:
4085         /* all other cases, broken pipe */
4086         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4087                         "2976 SLI_CONFIG mailbox broken pipe: "
4088                         "ctxSta:x%x, ctxNumBuf:%d "
4089                         "ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n",
4090                         phba->mbox_ext_buf_ctx.state,
4091                         phba->mbox_ext_buf_ctx.numBuf,
4092                         phba->mbox_ext_buf_ctx.mbxTag,
4093                         phba->mbox_ext_buf_ctx.seqNum,
4094                         mbox_req->extMboxTag, mbox_req->extSeqNum);
4095
4096         lpfc_bsg_mbox_ext_session_reset(phba);
4097
4098         return -EPIPE;
4099 }
4100
4101 /**
4102  * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
4103  * @phba: Pointer to HBA context object.
4104  * @mb: Pointer to a mailbox object.
4105  * @vport: Pointer to a vport object.
4106  *
4107  * Allocate a tracking object, mailbox command memory, get a mailbox
4108  * from the mailbox pool, copy the caller mailbox command.
4109  *
4110  * If offline and the sli is active we need to poll for the command (port is
4111  * being reset) and com-plete the job, otherwise issue the mailbox command and
4112  * let our completion handler finish the command.
4113  **/
4114 static uint32_t
4115 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct fc_bsg_job *job,
4116         struct lpfc_vport *vport)
4117 {
4118         LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
4119         MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
4120         /* a 4k buffer to hold the mb and extended data from/to the bsg */
4121         uint8_t *pmbx = NULL;
4122         struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
4123         struct lpfc_dmabuf *dmabuf = NULL;
4124         struct dfc_mbox_req *mbox_req;
4125         struct READ_EVENT_LOG_VAR *rdEventLog;
4126         uint32_t transmit_length, receive_length, mode;
4127         struct lpfc_mbx_sli4_config *sli4_config;
4128         struct lpfc_mbx_nembed_cmd *nembed_sge;
4129         struct mbox_header *header;
4130         struct ulp_bde64 *bde;
4131         uint8_t *ext = NULL;
4132         int rc = 0;
4133         uint8_t *from;
4134         uint32_t size;
4135
4136
4137         /* in case no data is transferred */
4138         job->reply->reply_payload_rcv_len = 0;
4139
4140         /* sanity check to protect driver */
4141         if (job->reply_payload.payload_len > BSG_MBOX_SIZE ||
4142             job->request_payload.payload_len > BSG_MBOX_SIZE) {
4143                 rc = -ERANGE;
4144                 goto job_done;
4145         }
4146
4147         /*
4148          * Don't allow mailbox commands to be sent when blocked or when in
4149          * the middle of discovery
4150          */
4151          if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
4152                 rc = -EAGAIN;
4153                 goto job_done;
4154         }
4155
4156         mbox_req =
4157             (struct dfc_mbox_req *)job->request->rqst_data.h_vendor.vendor_cmd;
4158
4159         /* check if requested extended data lengths are valid */
4160         if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) ||
4161             (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) {
4162                 rc = -ERANGE;
4163                 goto job_done;
4164         }
4165
4166         dmabuf = lpfc_bsg_dma_page_alloc(phba);
4167         if (!dmabuf || !dmabuf->virt) {
4168                 rc = -ENOMEM;
4169                 goto job_done;
4170         }
4171
4172         /* Get the mailbox command or external buffer from BSG */
4173         pmbx = (uint8_t *)dmabuf->virt;
4174         size = job->request_payload.payload_len;
4175         sg_copy_to_buffer(job->request_payload.sg_list,
4176                           job->request_payload.sg_cnt, pmbx, size);
4177
4178         /* Handle possible SLI_CONFIG with non-embedded payloads */
4179         if (phba->sli_rev == LPFC_SLI_REV4) {
4180                 rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf);
4181                 if (rc == SLI_CONFIG_HANDLED)
4182                         goto job_cont;
4183                 if (rc)
4184                         goto job_done;
4185                 /* SLI_CONFIG_NOT_HANDLED for other mailbox commands */
4186         }
4187
4188         rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport);
4189         if (rc != 0)
4190                 goto job_done; /* must be negative */
4191
4192         /* allocate our bsg tracking structure */
4193         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4194         if (!dd_data) {
4195                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4196                                 "2727 Failed allocation of dd_data\n");
4197                 rc = -ENOMEM;
4198                 goto job_done;
4199         }
4200
4201         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4202         if (!pmboxq) {
4203                 rc = -ENOMEM;
4204                 goto job_done;
4205         }
4206         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4207
4208         pmb = &pmboxq->u.mb;
4209         memcpy(pmb, pmbx, sizeof(*pmb));
4210         pmb->mbxOwner = OWN_HOST;
4211         pmboxq->vport = vport;
4212
4213         /* If HBA encountered an error attention, allow only DUMP
4214          * or RESTART mailbox commands until the HBA is restarted.
4215          */
4216         if (phba->pport->stopped &&
4217             pmb->mbxCommand != MBX_DUMP_MEMORY &&
4218             pmb->mbxCommand != MBX_RESTART &&
4219             pmb->mbxCommand != MBX_WRITE_VPARMS &&
4220             pmb->mbxCommand != MBX_WRITE_WWN)
4221                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
4222                                 "2797 mbox: Issued mailbox cmd "
4223                                 "0x%x while in stopped state.\n",
4224                                 pmb->mbxCommand);
4225
4226         /* extended mailbox commands will need an extended buffer */
4227         if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
4228                 /* any data for the device? */
4229                 if (mbox_req->inExtWLen) {
4230                         from = pmbx;
4231                         ext = from + sizeof(MAILBOX_t);
4232                 }
4233                 pmboxq->context2 = ext;
4234                 pmboxq->in_ext_byte_len =
4235                         mbox_req->inExtWLen * sizeof(uint32_t);
4236                 pmboxq->out_ext_byte_len =
4237                         mbox_req->outExtWLen * sizeof(uint32_t);
4238                 pmboxq->mbox_offset_word = mbox_req->mbOffset;
4239         }
4240
4241         /* biu diag will need a kernel buffer to transfer the data
4242          * allocate our own buffer and setup the mailbox command to
4243          * use ours
4244          */
4245         if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
4246                 transmit_length = pmb->un.varWords[1];
4247                 receive_length = pmb->un.varWords[4];
4248                 /* transmit length cannot be greater than receive length or
4249                  * mailbox extension size
4250                  */
4251                 if ((transmit_length > receive_length) ||
4252                         (transmit_length > MAILBOX_EXT_SIZE)) {
4253                         rc = -ERANGE;
4254                         goto job_done;
4255                 }
4256                 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
4257                         putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t));
4258                 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
4259                         putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t));
4260
4261                 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
4262                         putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)
4263                           + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4264                 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
4265                         putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)
4266                           + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4267         } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
4268                 rdEventLog = &pmb->un.varRdEventLog;
4269                 receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
4270                 mode = bf_get(lpfc_event_log, rdEventLog);
4271
4272                 /* receive length cannot be greater than mailbox
4273                  * extension size
4274                  */
4275                 if (receive_length > MAILBOX_EXT_SIZE) {
4276                         rc = -ERANGE;
4277                         goto job_done;
4278                 }
4279
4280                 /* mode zero uses a bde like biu diags command */
4281                 if (mode == 0) {
4282                         pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4283                                                         + sizeof(MAILBOX_t));
4284                         pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4285                                                         + sizeof(MAILBOX_t));
4286                 }
4287         } else if (phba->sli_rev == LPFC_SLI_REV4) {
4288                 if (pmb->mbxCommand == MBX_DUMP_MEMORY) {
4289                         /* rebuild the command for sli4 using our own buffers
4290                         * like we do for biu diags
4291                         */
4292                         receive_length = pmb->un.varWords[2];
4293                         /* receive length cannot be greater than mailbox
4294                          * extension size
4295                          */
4296                         if (receive_length == 0) {
4297                                 rc = -ERANGE;
4298                                 goto job_done;
4299                         }
4300                         pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4301                                                 + sizeof(MAILBOX_t));
4302                         pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4303                                                 + sizeof(MAILBOX_t));
4304                 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
4305                         pmb->un.varUpdateCfg.co) {
4306                         bde = (struct ulp_bde64 *)&pmb->un.varWords[4];
4307
4308                         /* bde size cannot be greater than mailbox ext size */
4309                         if (bde->tus.f.bdeSize > MAILBOX_EXT_SIZE) {
4310                                 rc = -ERANGE;
4311                                 goto job_done;
4312                         }
4313                         bde->addrHigh = putPaddrHigh(dmabuf->phys
4314                                                 + sizeof(MAILBOX_t));
4315                         bde->addrLow = putPaddrLow(dmabuf->phys
4316                                                 + sizeof(MAILBOX_t));
4317                 } else if (pmb->mbxCommand == MBX_SLI4_CONFIG) {
4318                         /* Handling non-embedded SLI_CONFIG mailbox command */
4319                         sli4_config = &pmboxq->u.mqe.un.sli4_config;
4320                         if (!bf_get(lpfc_mbox_hdr_emb,
4321                             &sli4_config->header.cfg_mhdr)) {
4322                                 /* rebuild the command for sli4 using our
4323                                  * own buffers like we do for biu diags
4324                                  */
4325                                 header = (struct mbox_header *)
4326                                                 &pmb->un.varWords[0];
4327                                 nembed_sge = (struct lpfc_mbx_nembed_cmd *)
4328                                                 &pmb->un.varWords[0];
4329                                 receive_length = nembed_sge->sge[0].length;
4330
4331                                 /* receive length cannot be greater than
4332                                  * mailbox extension size
4333                                  */
4334                                 if ((receive_length == 0) ||
4335                                     (receive_length > MAILBOX_EXT_SIZE)) {
4336                                         rc = -ERANGE;
4337                                         goto job_done;
4338                                 }
4339
4340                                 nembed_sge->sge[0].pa_hi =
4341                                                 putPaddrHigh(dmabuf->phys
4342                                                    + sizeof(MAILBOX_t));
4343                                 nembed_sge->sge[0].pa_lo =
4344                                                 putPaddrLow(dmabuf->phys
4345                                                    + sizeof(MAILBOX_t));
4346                         }
4347                 }
4348         }
4349
4350         dd_data->context_un.mbox.dmabuffers = dmabuf;
4351
4352         /* setup wake call as IOCB callback */
4353         pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl;
4354
4355         /* setup context field to pass wait_queue pointer to wake function */
4356         pmboxq->context1 = dd_data;
4357         dd_data->type = TYPE_MBOX;
4358         dd_data->context_un.mbox.pmboxq = pmboxq;
4359         dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
4360         dd_data->context_un.mbox.set_job = job;
4361         dd_data->context_un.mbox.ext = ext;
4362         dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
4363         dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
4364         dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
4365         job->dd_data = dd_data;
4366
4367         if ((vport->fc_flag & FC_OFFLINE_MODE) ||
4368             (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
4369                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
4370                 if (rc != MBX_SUCCESS) {
4371                         rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
4372                         goto job_done;
4373                 }
4374
4375                 /* job finished, copy the data */
4376                 memcpy(pmbx, pmb, sizeof(*pmb));
4377                 job->reply->reply_payload_rcv_len =
4378                         sg_copy_from_buffer(job->reply_payload.sg_list,
4379                                             job->reply_payload.sg_cnt,
4380                                             pmbx, size);
4381                 /* not waiting mbox already done */
4382                 rc = 0;
4383                 goto job_done;
4384         }
4385
4386         rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4387         if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
4388                 return 1; /* job started */
4389
4390 job_done:
4391         /* common exit for error or job completed inline */
4392         if (pmboxq)
4393                 mempool_free(pmboxq, phba->mbox_mem_pool);
4394         lpfc_bsg_dma_page_free(phba, dmabuf);
4395         kfree(dd_data);
4396
4397 job_cont:
4398         return rc;
4399 }
4400
4401 /**
4402  * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
4403  * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
4404  **/
4405 static int
4406 lpfc_bsg_mbox_cmd(struct fc_bsg_job *job)
4407 {
4408         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
4409         struct lpfc_hba *phba = vport->phba;
4410         struct dfc_mbox_req *mbox_req;
4411         int rc = 0;
4412
4413         /* mix-and-match backward compatibility */
4414         job->reply->reply_payload_rcv_len = 0;
4415         if (job->request_len <
4416             sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
4417                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4418                                 "2737 Mix-and-match backward compability "
4419                                 "between MBOX_REQ old size:%d and "
4420                                 "new request size:%d\n",
4421                                 (int)(job->request_len -
4422                                       sizeof(struct fc_bsg_request)),
4423                                 (int)sizeof(struct dfc_mbox_req));
4424                 mbox_req = (struct dfc_mbox_req *)
4425                                 job->request->rqst_data.h_vendor.vendor_cmd;
4426                 mbox_req->extMboxTag = 0;
4427                 mbox_req->extSeqNum = 0;
4428         }
4429
4430         rc = lpfc_bsg_issue_mbox(phba, job, vport);
4431
4432         if (rc == 0) {
4433                 /* job done */
4434                 job->reply->result = 0;
4435                 job->dd_data = NULL;
4436                 job->job_done(job);
4437         } else if (rc == 1)
4438                 /* job submitted, will complete later*/
4439                 rc = 0; /* return zero, no error */
4440         else {
4441                 /* some error occurred */
4442                 job->reply->result = rc;
4443                 job->dd_data = NULL;
4444         }
4445
4446         return rc;
4447 }
4448
4449 /**
4450  * lpfc_bsg_menlo_cmd_cmp - lpfc_menlo_cmd completion handler
4451  * @phba: Pointer to HBA context object.
4452  * @cmdiocbq: Pointer to command iocb.
4453  * @rspiocbq: Pointer to response iocb.
4454  *
4455  * This function is the completion handler for iocbs issued using
4456  * lpfc_menlo_cmd function. This function is called by the
4457  * ring event handler function without any lock held. This function
4458  * can be called from both worker thread context and interrupt
4459  * context. This function also can be called from another thread which
4460  * cleans up the SLI layer objects.
4461  * This function copies the contents of the response iocb to the
4462  * response iocb memory object provided by the caller of
4463  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
4464  * sleeps for the iocb completion.
4465  **/
4466 static void
4467 lpfc_bsg_menlo_cmd_cmp(struct lpfc_hba *phba,
4468                         struct lpfc_iocbq *cmdiocbq,
4469                         struct lpfc_iocbq *rspiocbq)
4470 {
4471         struct bsg_job_data *dd_data;
4472         struct fc_bsg_job *job;
4473         IOCB_t *rsp;
4474         struct lpfc_dmabuf *bmp;
4475         struct lpfc_bsg_menlo *menlo;
4476         unsigned long flags;
4477         struct menlo_response *menlo_resp;
4478         int rc = 0;
4479
4480         spin_lock_irqsave(&phba->ct_ev_lock, flags);
4481         dd_data = cmdiocbq->context1;
4482         if (!dd_data) {
4483                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4484                 return;
4485         }
4486
4487         menlo = &dd_data->context_un.menlo;
4488         job = menlo->set_job;
4489         job->dd_data = NULL; /* so timeout handler does not reply */
4490
4491         spin_lock(&phba->hbalock);
4492         cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
4493         if (cmdiocbq->context2 && rspiocbq)
4494                 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
4495                        &rspiocbq->iocb, sizeof(IOCB_t));
4496         spin_unlock(&phba->hbalock);
4497
4498         bmp = menlo->bmp;
4499         rspiocbq = menlo->rspiocbq;
4500         rsp = &rspiocbq->iocb;
4501
4502         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
4503                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
4504         pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
4505                      job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
4506
4507         /* always return the xri, this would be used in the case
4508          * of a menlo download to allow the data to be sent as a continuation
4509          * of the exchange.
4510          */
4511         menlo_resp = (struct menlo_response *)
4512                 job->reply->reply_data.vendor_reply.vendor_rsp;
4513         menlo_resp->xri = rsp->ulpContext;
4514         if (rsp->ulpStatus) {
4515                 if (rsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
4516                         switch (rsp->un.ulpWord[4] & 0xff) {
4517                         case IOERR_SEQUENCE_TIMEOUT:
4518                                 rc = -ETIMEDOUT;
4519                                 break;
4520                         case IOERR_INVALID_RPI:
4521                                 rc = -EFAULT;
4522                                 break;
4523                         default:
4524                                 rc = -EACCES;
4525                                 break;
4526                         }
4527                 } else
4528                         rc = -EACCES;
4529         } else
4530                 job->reply->reply_payload_rcv_len =
4531                         rsp->un.genreq64.bdl.bdeSize;
4532
4533         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
4534         lpfc_sli_release_iocbq(phba, rspiocbq);
4535         lpfc_sli_release_iocbq(phba, cmdiocbq);
4536         kfree(bmp);
4537         kfree(dd_data);
4538         /* make error code available to userspace */
4539         job->reply->result = rc;
4540         /* complete the job back to userspace */
4541         job->job_done(job);
4542         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4543         return;
4544 }
4545
4546 /**
4547  * lpfc_menlo_cmd - send an ioctl for menlo hardware
4548  * @job: fc_bsg_job to handle
4549  *
4550  * This function issues a gen request 64 CR ioctl for all menlo cmd requests,
4551  * all the command completions will return the xri for the command.
4552  * For menlo data requests a gen request 64 CX is used to continue the exchange
4553  * supplied in the menlo request header xri field.
4554  **/
4555 static int
4556 lpfc_menlo_cmd(struct fc_bsg_job *job)
4557 {
4558         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
4559         struct lpfc_hba *phba = vport->phba;
4560         struct lpfc_iocbq *cmdiocbq, *rspiocbq;
4561         IOCB_t *cmd, *rsp;
4562         int rc = 0;
4563         struct menlo_command *menlo_cmd;
4564         struct menlo_response *menlo_resp;
4565         struct lpfc_dmabuf *bmp = NULL;
4566         int request_nseg;
4567         int reply_nseg;
4568         struct scatterlist *sgel = NULL;
4569         int numbde;
4570         dma_addr_t busaddr;
4571         struct bsg_job_data *dd_data;
4572         struct ulp_bde64 *bpl = NULL;
4573
4574         /* in case no data is returned return just the return code */
4575         job->reply->reply_payload_rcv_len = 0;
4576
4577         if (job->request_len <
4578             sizeof(struct fc_bsg_request) +
4579                 sizeof(struct menlo_command)) {
4580                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4581                                 "2784 Received MENLO_CMD request below "
4582                                 "minimum size\n");
4583                 rc = -ERANGE;
4584                 goto no_dd_data;
4585         }
4586
4587         if (job->reply_len <
4588             sizeof(struct fc_bsg_request) + sizeof(struct menlo_response)) {
4589                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4590                                 "2785 Received MENLO_CMD reply below "
4591                                 "minimum size\n");
4592                 rc = -ERANGE;
4593                 goto no_dd_data;
4594         }
4595
4596         if (!(phba->menlo_flag & HBA_MENLO_SUPPORT)) {
4597                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4598                                 "2786 Adapter does not support menlo "
4599                                 "commands\n");
4600                 rc = -EPERM;
4601                 goto no_dd_data;
4602         }
4603
4604         menlo_cmd = (struct menlo_command *)
4605                 job->request->rqst_data.h_vendor.vendor_cmd;
4606
4607         menlo_resp = (struct menlo_response *)
4608                 job->reply->reply_data.vendor_reply.vendor_rsp;
4609
4610         /* allocate our bsg tracking structure */
4611         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4612         if (!dd_data) {
4613                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4614                                 "2787 Failed allocation of dd_data\n");
4615                 rc = -ENOMEM;
4616                 goto no_dd_data;
4617         }
4618
4619         bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4620         if (!bmp) {
4621                 rc = -ENOMEM;
4622                 goto free_dd;
4623         }
4624
4625         cmdiocbq = lpfc_sli_get_iocbq(phba);
4626         if (!cmdiocbq) {
4627                 rc = -ENOMEM;
4628                 goto free_bmp;
4629         }
4630
4631         rspiocbq = lpfc_sli_get_iocbq(phba);
4632         if (!rspiocbq) {
4633                 rc = -ENOMEM;
4634                 goto free_cmdiocbq;
4635         }
4636
4637         rsp = &rspiocbq->iocb;
4638
4639         bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
4640         if (!bmp->virt) {
4641                 rc = -ENOMEM;
4642                 goto free_rspiocbq;
4643         }
4644
4645         INIT_LIST_HEAD(&bmp->list);
4646         bpl = (struct ulp_bde64 *) bmp->virt;
4647         request_nseg = pci_map_sg(phba->pcidev, job->request_payload.sg_list,
4648                                   job->request_payload.sg_cnt, DMA_TO_DEVICE);
4649         for_each_sg(job->request_payload.sg_list, sgel, request_nseg, numbde) {
4650                 busaddr = sg_dma_address(sgel);
4651                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
4652                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
4653                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
4654                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
4655                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
4656                 bpl++;
4657         }
4658
4659         reply_nseg = pci_map_sg(phba->pcidev, job->reply_payload.sg_list,
4660                                 job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
4661         for_each_sg(job->reply_payload.sg_list, sgel, reply_nseg, numbde) {
4662                 busaddr = sg_dma_address(sgel);
4663                 bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
4664                 bpl->tus.f.bdeSize = sg_dma_len(sgel);
4665                 bpl->tus.w = cpu_to_le32(bpl->tus.w);
4666                 bpl->addrLow = cpu_to_le32(putPaddrLow(busaddr));
4667                 bpl->addrHigh = cpu_to_le32(putPaddrHigh(busaddr));
4668                 bpl++;
4669         }
4670
4671         cmd = &cmdiocbq->iocb;
4672         cmd->un.genreq64.bdl.ulpIoTag32 = 0;
4673         cmd->un.genreq64.bdl.addrHigh = putPaddrHigh(bmp->phys);
4674         cmd->un.genreq64.bdl.addrLow = putPaddrLow(bmp->phys);
4675         cmd->un.genreq64.bdl.bdeFlags = BUFF_TYPE_BLP_64;
4676         cmd->un.genreq64.bdl.bdeSize =
4677             (request_nseg + reply_nseg) * sizeof(struct ulp_bde64);
4678         cmd->un.genreq64.w5.hcsw.Fctl = (SI | LA);
4679         cmd->un.genreq64.w5.hcsw.Dfctl = 0;
4680         cmd->un.genreq64.w5.hcsw.Rctl = FC_RCTL_DD_UNSOL_CMD;
4681         cmd->un.genreq64.w5.hcsw.Type = MENLO_TRANSPORT_TYPE; /* 0xfe */
4682         cmd->ulpBdeCount = 1;
4683         cmd->ulpClass = CLASS3;
4684         cmd->ulpOwner = OWN_CHIP;
4685         cmd->ulpLe = 1; /* Limited Edition */
4686         cmdiocbq->iocb_flag |= LPFC_IO_LIBDFC;
4687         cmdiocbq->vport = phba->pport;
4688         /* We want the firmware to timeout before we do */
4689         cmd->ulpTimeout = MENLO_TIMEOUT - 5;
4690         cmdiocbq->context3 = bmp;
4691         cmdiocbq->context2 = rspiocbq;
4692         cmdiocbq->iocb_cmpl = lpfc_bsg_menlo_cmd_cmp;
4693         cmdiocbq->context1 = dd_data;
4694         cmdiocbq->context2 = rspiocbq;
4695         if (menlo_cmd->cmd == LPFC_BSG_VENDOR_MENLO_CMD) {
4696                 cmd->ulpCommand = CMD_GEN_REQUEST64_CR;
4697                 cmd->ulpPU = MENLO_PU; /* 3 */
4698                 cmd->un.ulpWord[4] = MENLO_DID; /* 0x0000FC0E */
4699                 cmd->ulpContext = MENLO_CONTEXT; /* 0 */
4700         } else {
4701                 cmd->ulpCommand = CMD_GEN_REQUEST64_CX;
4702                 cmd->ulpPU = 1;
4703                 cmd->un.ulpWord[4] = 0;
4704                 cmd->ulpContext = menlo_cmd->xri;
4705         }
4706
4707         dd_data->type = TYPE_MENLO;
4708         dd_data->context_un.menlo.cmdiocbq = cmdiocbq;
4709         dd_data->context_un.menlo.rspiocbq = rspiocbq;
4710         dd_data->context_un.menlo.set_job = job;
4711         dd_data->context_un.menlo.bmp = bmp;
4712
4713         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
4714                 MENLO_TIMEOUT - 5);
4715         if (rc == IOCB_SUCCESS)
4716                 return 0; /* done for now */
4717
4718         /* iocb failed so cleanup */
4719         pci_unmap_sg(phba->pcidev, job->request_payload.sg_list,
4720                      job->request_payload.sg_cnt, DMA_TO_DEVICE);
4721         pci_unmap_sg(phba->pcidev, job->reply_payload.sg_list,
4722                      job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
4723
4724         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
4725
4726 free_rspiocbq:
4727         lpfc_sli_release_iocbq(phba, rspiocbq);
4728 free_cmdiocbq:
4729         lpfc_sli_release_iocbq(phba, cmdiocbq);
4730 free_bmp:
4731         kfree(bmp);
4732 free_dd:
4733         kfree(dd_data);
4734 no_dd_data:
4735         /* make error code available to userspace */
4736         job->reply->result = rc;
4737         job->dd_data = NULL;
4738         return rc;
4739 }
4740
4741 /**
4742  * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
4743  * @job: fc_bsg_job to handle
4744  **/
4745 static int
4746 lpfc_bsg_hst_vendor(struct fc_bsg_job *job)
4747 {
4748         int command = job->request->rqst_data.h_vendor.vendor_cmd[0];
4749         int rc;
4750
4751         switch (command) {
4752         case LPFC_BSG_VENDOR_SET_CT_EVENT:
4753                 rc = lpfc_bsg_hba_set_event(job);
4754                 break;
4755         case LPFC_BSG_VENDOR_GET_CT_EVENT:
4756                 rc = lpfc_bsg_hba_get_event(job);
4757                 break;
4758         case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
4759                 rc = lpfc_bsg_send_mgmt_rsp(job);
4760                 break;
4761         case LPFC_BSG_VENDOR_DIAG_MODE:
4762                 rc = lpfc_bsg_diag_loopback_mode(job);
4763                 break;
4764         case LPFC_BSG_VENDOR_DIAG_MODE_END:
4765                 rc = lpfc_sli4_bsg_diag_mode_end(job);
4766                 break;
4767         case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK:
4768                 rc = lpfc_bsg_diag_loopback_run(job);
4769                 break;
4770         case LPFC_BSG_VENDOR_LINK_DIAG_TEST:
4771                 rc = lpfc_sli4_bsg_link_diag_test(job);
4772                 break;
4773         case LPFC_BSG_VENDOR_GET_MGMT_REV:
4774                 rc = lpfc_bsg_get_dfc_rev(job);
4775                 break;
4776         case LPFC_BSG_VENDOR_MBOX:
4777                 rc = lpfc_bsg_mbox_cmd(job);
4778                 break;
4779         case LPFC_BSG_VENDOR_MENLO_CMD:
4780         case LPFC_BSG_VENDOR_MENLO_DATA:
4781                 rc = lpfc_menlo_cmd(job);
4782                 break;
4783         default:
4784                 rc = -EINVAL;
4785                 job->reply->reply_payload_rcv_len = 0;
4786                 /* make error code available to userspace */
4787                 job->reply->result = rc;
4788                 break;
4789         }
4790
4791         return rc;
4792 }
4793
4794 /**
4795  * lpfc_bsg_request - handle a bsg request from the FC transport
4796  * @job: fc_bsg_job to handle
4797  **/
4798 int
4799 lpfc_bsg_request(struct fc_bsg_job *job)
4800 {
4801         uint32_t msgcode;
4802         int rc;
4803
4804         msgcode = job->request->msgcode;
4805         switch (msgcode) {
4806         case FC_BSG_HST_VENDOR:
4807                 rc = lpfc_bsg_hst_vendor(job);
4808                 break;
4809         case FC_BSG_RPT_ELS:
4810                 rc = lpfc_bsg_rport_els(job);
4811                 break;
4812         case FC_BSG_RPT_CT:
4813                 rc = lpfc_bsg_send_mgmt_cmd(job);
4814                 break;
4815         default:
4816                 rc = -EINVAL;
4817                 job->reply->reply_payload_rcv_len = 0;
4818                 /* make error code available to userspace */
4819                 job->reply->result = rc;
4820                 break;
4821         }
4822
4823         return rc;
4824 }
4825
4826 /**
4827  * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
4828  * @job: fc_bsg_job that has timed out
4829  *
4830  * This function just aborts the job's IOCB.  The aborted IOCB will return to
4831  * the waiting function which will handle passing the error back to userspace
4832  **/
4833 int
4834 lpfc_bsg_timeout(struct fc_bsg_job *job)
4835 {
4836         struct lpfc_vport *vport = (struct lpfc_vport *)job->shost->hostdata;
4837         struct lpfc_hba *phba = vport->phba;
4838         struct lpfc_iocbq *cmdiocb;
4839         struct lpfc_bsg_event *evt;
4840         struct lpfc_bsg_iocb *iocb;
4841         struct lpfc_bsg_mbox *mbox;
4842         struct lpfc_bsg_menlo *menlo;
4843         struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
4844         struct bsg_job_data *dd_data;
4845         unsigned long flags;
4846
4847         spin_lock_irqsave(&phba->ct_ev_lock, flags);
4848         dd_data = (struct bsg_job_data *)job->dd_data;
4849         /* timeout and completion crossed paths if no dd_data */
4850         if (!dd_data) {
4851                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4852                 return 0;
4853         }
4854
4855         switch (dd_data->type) {
4856         case TYPE_IOCB:
4857                 iocb = &dd_data->context_un.iocb;
4858                 cmdiocb = iocb->cmdiocbq;
4859                 /* hint to completion handler that the job timed out */
4860                 job->reply->result = -EAGAIN;
4861                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4862                 /* this will call our completion handler */
4863                 spin_lock_irq(&phba->hbalock);
4864                 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
4865                 spin_unlock_irq(&phba->hbalock);
4866                 break;
4867         case TYPE_EVT:
4868                 evt = dd_data->context_un.evt;
4869                 /* this event has no job anymore */
4870                 evt->set_job = NULL;
4871                 job->dd_data = NULL;
4872                 job->reply->reply_payload_rcv_len = 0;
4873                 /* Return -EAGAIN which is our way of signallying the
4874                  * app to retry.
4875                  */
4876                 job->reply->result = -EAGAIN;
4877                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4878                 job->job_done(job);
4879                 break;
4880         case TYPE_MBOX:
4881                 mbox = &dd_data->context_un.mbox;
4882                 /* this mbox has no job anymore */
4883                 mbox->set_job = NULL;
4884                 job->dd_data = NULL;
4885                 job->reply->reply_payload_rcv_len = 0;
4886                 job->reply->result = -EAGAIN;
4887                 /* the mbox completion handler can now be run */
4888                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4889                 job->job_done(job);
4890                 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
4891                         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
4892                 break;
4893         case TYPE_MENLO:
4894                 menlo = &dd_data->context_un.menlo;
4895                 cmdiocb = menlo->cmdiocbq;
4896                 /* hint to completion handler that the job timed out */
4897                 job->reply->result = -EAGAIN;
4898                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4899                 /* this will call our completion handler */
4900                 spin_lock_irq(&phba->hbalock);
4901                 lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb);
4902                 spin_unlock_irq(&phba->hbalock);
4903                 break;
4904         default:
4905                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
4906                 break;
4907         }
4908
4909         /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
4910          * otherwise an error message will be displayed on the console
4911          * so always return success (zero)
4912          */
4913         return 0;
4914 }