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) 2017-2024 Broadcom. All Rights Reserved. The term *
   5  * “Broadcom” refers to Broadcom Inc. and/or its subsidiaries.     *
   6  * Copyright (C) 2009-2015 Emulex.  All rights reserved.           *
   7  * EMULEX and SLI are trademarks of Emulex.                        *
   8  * www.broadcom.com                                                *
   9  *                                                                 *
  10  * This program is free software; you can redistribute it and/or   *
  11  * modify it under the terms of version 2 of the GNU General       *
  12  * Public License as published by the Free Software Foundation.    *
  13  * This program is distributed in the hope that it will be useful. *
  14  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  15  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  16  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  17  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  18  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  19  * more details, a copy of which can be found in the file COPYING  *
  20  * included with this package.                                     *
  21  *******************************************************************/
  22
  23 #include <linux/interrupt.h>
  24 #include <linux/mempool.h>
  25 #include <linux/pci.h>
  26 #include <linux/slab.h>
  27 #include <linux/delay.h>
  28 #include <linux/list.h>
  29 #include <linux/bsg-lib.h>
  30 #include <linux/vmalloc.h>
  31
  32 #include <scsi/scsi.h>
  33 #include <scsi/scsi_host.h>
  34 #include <scsi/scsi_transport_fc.h>
  35 #include <scsi/scsi_bsg_fc.h>
  36 #include <scsi/fc/fc_fs.h>
  37
  38 #include "lpfc_hw4.h"
  39 #include "lpfc_hw.h"
  40 #include "lpfc_sli.h"
  41 #include "lpfc_sli4.h"
  42 #include "lpfc_nl.h"
  43 #include "lpfc_bsg.h"
  44 #include "lpfc_disc.h"
  45 #include "lpfc_scsi.h"
  46 #include "lpfc.h"
  47 #include "lpfc_logmsg.h"
  48 #include "lpfc_crtn.h"
  49 #include "lpfc_debugfs.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_version.h"
  52
  53 struct lpfc_bsg_event {
  54         struct list_head node;
  55         struct kref kref;
  56         wait_queue_head_t wq;
  57
  58         /* Event type and waiter identifiers */
  59         uint32_t type_mask;
  60         uint32_t req_id;
  61         uint32_t reg_id;
  62
  63         /* next two flags are here for the auto-delete logic */
  64         unsigned long wait_time_stamp;
  65         int waiting;
  66
  67         /* seen and not seen events */
  68         struct list_head events_to_get;
  69         struct list_head events_to_see;
  70
  71         /* driver data associated with the job */
  72         void *dd_data;
  73 };
  74
  75 struct lpfc_bsg_iocb {
  76         struct lpfc_iocbq *cmdiocbq;
  77         struct lpfc_dmabuf *rmp;
  78         struct lpfc_nodelist *ndlp;
  79 };
  80
  81 struct lpfc_bsg_mbox {
  82         LPFC_MBOXQ_t *pmboxq;
  83         MAILBOX_t *mb;
  84         struct lpfc_dmabuf *dmabuffers; /* for BIU diags */
  85         uint8_t *ext; /* extended mailbox data */
  86         uint32_t mbOffset; /* from app */
  87         uint32_t inExtWLen; /* from app */
  88         uint32_t outExtWLen; /* from app */
  89 };
  90
  91 #define TYPE_EVT        1
  92 #define TYPE_IOCB       2
  93 #define TYPE_MBOX       3
  94 struct bsg_job_data {
  95         uint32_t type;
  96         struct bsg_job *set_job; /* job waiting for this iocb to finish */
  97         union {
  98                 struct lpfc_bsg_event *evt;
  99                 struct lpfc_bsg_iocb iocb;
 100                 struct lpfc_bsg_mbox mbox;
 101         } context_un;
 102 };
 103
 104 struct event_data {
 105         struct list_head node;
 106         uint32_t type;
 107         uint32_t immed_dat;
 108         void *data;
 109         uint32_t len;
 110 };
 111
 112 #define BUF_SZ_4K 4096
 113 #define SLI_CT_ELX_LOOPBACK 0x10
 114
 115 enum ELX_LOOPBACK_CMD {
 116         ELX_LOOPBACK_XRI_SETUP,
 117         ELX_LOOPBACK_DATA,
 118 };
 119
 120 #define ELX_LOOPBACK_HEADER_SZ \
 121         (size_t)(&((struct lpfc_sli_ct_request *)NULL)->un)
 122
 123 struct lpfc_dmabufext {
 124         struct lpfc_dmabuf dma;
 125         uint32_t size;
 126         uint32_t flag;
 127 };
 128
 129 static void
 130 lpfc_free_bsg_buffers(struct lpfc_hba *phba, struct lpfc_dmabuf *mlist)
 131 {
 132         struct lpfc_dmabuf *mlast, *next_mlast;
 133
 134         if (mlist) {
 135                 list_for_each_entry_safe(mlast, next_mlast, &mlist->list,
 136                                          list) {
 137                         list_del(&mlast->list);
 138                         lpfc_mbuf_free(phba, mlast->virt, mlast->phys);
 139                         kfree(mlast);
 140                 }
 141                 lpfc_mbuf_free(phba, mlist->virt, mlist->phys);
 142                 kfree(mlist);
 143         }
 144         return;
 145 }
 146
 147 static struct lpfc_dmabuf *
 148 lpfc_alloc_bsg_buffers(struct lpfc_hba *phba, unsigned int size,
 149                        int outbound_buffers, struct ulp_bde64 *bpl,
 150                        int *bpl_entries)
 151 {
 152         struct lpfc_dmabuf *mlist = NULL;
 153         struct lpfc_dmabuf *mp;
 154         unsigned int bytes_left = size;
 155
 156         /* Verify we can support the size specified */
 157         if (!size || (size > (*bpl_entries * LPFC_BPL_SIZE)))
 158                 return NULL;
 159
 160         /* Determine the number of dma buffers to allocate */
 161         *bpl_entries = (size % LPFC_BPL_SIZE ? size/LPFC_BPL_SIZE + 1 :
 162                         size/LPFC_BPL_SIZE);
 163
 164         /* Allocate dma buffer and place in BPL passed */
 165         while (bytes_left) {
 166                 /* Allocate dma buffer  */
 167                 mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
 168                 if (!mp) {
 169                         if (mlist)
 170                                 lpfc_free_bsg_buffers(phba, mlist);
 171                         return NULL;
 172                 }
 173
 174                 INIT_LIST_HEAD(&mp->list);
 175                 mp->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &(mp->phys));
 176
 177                 if (!mp->virt) {
 178                         kfree(mp);
 179                         if (mlist)
 180                                 lpfc_free_bsg_buffers(phba, mlist);
 181                         return NULL;
 182                 }
 183
 184                 /* Queue it to a linked list */
 185                 if (!mlist)
 186                         mlist = mp;
 187                 else
 188                         list_add_tail(&mp->list, &mlist->list);
 189
 190                 /* Add buffer to buffer pointer list */
 191                 if (outbound_buffers)
 192                         bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64;
 193                 else
 194                         bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
 195                 bpl->addrLow = le32_to_cpu(putPaddrLow(mp->phys));
 196                 bpl->addrHigh = le32_to_cpu(putPaddrHigh(mp->phys));
 197                 bpl->tus.f.bdeSize = (uint16_t)
 198                         (bytes_left >= LPFC_BPL_SIZE ? LPFC_BPL_SIZE :
 199                          bytes_left);
 200                 bytes_left -= bpl->tus.f.bdeSize;
 201                 bpl->tus.w = le32_to_cpu(bpl->tus.w);
 202                 bpl++;
 203         }
 204         return mlist;
 205 }
 206
 207 static unsigned int
 208 lpfc_bsg_copy_data(struct lpfc_dmabuf *dma_buffers,
 209                    struct bsg_buffer *bsg_buffers,
 210                    unsigned int bytes_to_transfer, int to_buffers)
 211 {
 212
 213         struct lpfc_dmabuf *mp;
 214         unsigned int transfer_bytes, bytes_copied = 0;
 215         unsigned int sg_offset, dma_offset;
 216         unsigned char *dma_address, *sg_address;
 217         LIST_HEAD(temp_list);
 218         struct sg_mapping_iter miter;
 219         unsigned long flags;
 220         unsigned int sg_flags = SG_MITER_ATOMIC;
 221         bool sg_valid;
 222
 223         list_splice_init(&dma_buffers->list, &temp_list);
 224         list_add(&dma_buffers->list, &temp_list);
 225         sg_offset = 0;
 226         if (to_buffers)
 227                 sg_flags |= SG_MITER_FROM_SG;
 228         else
 229                 sg_flags |= SG_MITER_TO_SG;
 230         sg_miter_start(&miter, bsg_buffers->sg_list, bsg_buffers->sg_cnt,
 231                        sg_flags);
 232         local_irq_save(flags);
 233         sg_valid = sg_miter_next(&miter);
 234         list_for_each_entry(mp, &temp_list, list) {
 235                 dma_offset = 0;
 236                 while (bytes_to_transfer && sg_valid &&
 237                        (dma_offset < LPFC_BPL_SIZE)) {
 238                         dma_address = mp->virt + dma_offset;
 239                         if (sg_offset) {
 240                                 /* Continue previous partial transfer of sg */
 241                                 sg_address = miter.addr + sg_offset;
 242                                 transfer_bytes = miter.length - sg_offset;
 243                         } else {
 244                                 sg_address = miter.addr;
 245                                 transfer_bytes = miter.length;
 246                         }
 247                         if (bytes_to_transfer < transfer_bytes)
 248                                 transfer_bytes = bytes_to_transfer;
 249                         if (transfer_bytes > (LPFC_BPL_SIZE - dma_offset))
 250                                 transfer_bytes = LPFC_BPL_SIZE - dma_offset;
 251                         if (to_buffers)
 252                                 memcpy(dma_address, sg_address, transfer_bytes);
 253                         else
 254                                 memcpy(sg_address, dma_address, transfer_bytes);
 255                         dma_offset += transfer_bytes;
 256                         sg_offset += transfer_bytes;
 257                         bytes_to_transfer -= transfer_bytes;
 258                         bytes_copied += transfer_bytes;
 259                         if (sg_offset >= miter.length) {
 260                                 sg_offset = 0;
 261                                 sg_valid = sg_miter_next(&miter);
 262                         }
 263                 }
 264         }
 265         sg_miter_stop(&miter);
 266         local_irq_restore(flags);
 267         list_del_init(&dma_buffers->list);
 268         list_splice(&temp_list, &dma_buffers->list);
 269         return bytes_copied;
 270 }
 271
 272 /**
 273  * lpfc_bsg_send_mgmt_cmd_cmp - lpfc_bsg_send_mgmt_cmd's completion handler
 274  * @phba: Pointer to HBA context object.
 275  * @cmdiocbq: Pointer to command iocb.
 276  * @rspiocbq: Pointer to response iocb.
 277  *
 278  * This function is the completion handler for iocbs issued using
 279  * lpfc_bsg_send_mgmt_cmd function. This function is called by the
 280  * ring event handler function without any lock held. This function
 281  * can be called from both worker thread context and interrupt
 282  * context. This function also can be called from another thread which
 283  * cleans up the SLI layer objects.
 284  * This function copies the contents of the response iocb to the
 285  * response iocb memory object provided by the caller of
 286  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 287  * sleeps for the iocb completion.
 288  **/
 289 static void
 290 lpfc_bsg_send_mgmt_cmd_cmp(struct lpfc_hba *phba,
 291                         struct lpfc_iocbq *cmdiocbq,
 292                         struct lpfc_iocbq *rspiocbq)
 293 {
 294         struct bsg_job_data *dd_data;
 295         struct bsg_job *job;
 296         struct fc_bsg_reply *bsg_reply;
 297         struct lpfc_dmabuf *bmp, *cmp, *rmp;
 298         struct lpfc_nodelist *ndlp;
 299         struct lpfc_bsg_iocb *iocb;
 300         unsigned long flags;
 301         int rc = 0;
 302         u32 ulp_status, ulp_word4, total_data_placed;
 303
 304         dd_data = cmdiocbq->context_un.dd_data;
 305
 306         /* Determine if job has been aborted */
 307         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 308         job = dd_data->set_job;
 309         if (job) {
 310                 bsg_reply = job->reply;
 311                 /* Prevent timeout handling from trying to abort job */
 312                 job->dd_data = NULL;
 313         }
 314         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 315
 316         /* Close the timeout handler abort window */
 317         spin_lock_irqsave(&phba->hbalock, flags);
 318         cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING;
 319         spin_unlock_irqrestore(&phba->hbalock, flags);
 320
 321         iocb = &dd_data->context_un.iocb;
 322         ndlp = iocb->cmdiocbq->ndlp;
 323         rmp = iocb->rmp;
 324         cmp = cmdiocbq->cmd_dmabuf;
 325         bmp = cmdiocbq->bpl_dmabuf;
 326         ulp_status = get_job_ulpstatus(phba, rspiocbq);
 327         ulp_word4 = get_job_word4(phba, rspiocbq);
 328         total_data_placed = get_job_data_placed(phba, rspiocbq);
 329
 330         /* Copy the completed data or set the error status */
 331
 332         if (job) {
 333                 if (ulp_status) {
 334                         if (ulp_status == IOSTAT_LOCAL_REJECT) {
 335                                 switch (ulp_word4 & IOERR_PARAM_MASK) {
 336                                 case IOERR_SEQUENCE_TIMEOUT:
 337                                         rc = -ETIMEDOUT;
 338                                         break;
 339                                 case IOERR_INVALID_RPI:
 340                                         rc = -EFAULT;
 341                                         break;
 342                                 default:
 343                                         rc = -EACCES;
 344                                         break;
 345                                 }
 346                         } else {
 347                                 rc = -EACCES;
 348                         }
 349                 } else {
 350                         bsg_reply->reply_payload_rcv_len =
 351                                 lpfc_bsg_copy_data(rmp, &job->reply_payload,
 352                                                    total_data_placed, 0);
 353                 }
 354         }
 355
 356         lpfc_free_bsg_buffers(phba, cmp);
 357         lpfc_free_bsg_buffers(phba, rmp);
 358         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
 359         kfree(bmp);
 360         lpfc_nlp_put(ndlp);
 361         lpfc_sli_release_iocbq(phba, cmdiocbq);
 362         kfree(dd_data);
 363
 364         /* Complete the job if the job is still active */
 365
 366         if (job) {
 367                 bsg_reply->result = rc;
 368                 bsg_job_done(job, bsg_reply->result,
 369                                bsg_reply->reply_payload_rcv_len);
 370         }
 371         return;
 372 }
 373
 374 /**
 375  * lpfc_bsg_send_mgmt_cmd - send a CT command from a bsg request
 376  * @job: fc_bsg_job to handle
 377  **/
 378 static int
 379 lpfc_bsg_send_mgmt_cmd(struct bsg_job *job)
 380 {
 381         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
 382         struct lpfc_rport_data *rdata = fc_bsg_to_rport(job)->dd_data;
 383         struct lpfc_hba *phba = vport->phba;
 384         struct lpfc_nodelist *ndlp = rdata->pnode;
 385         struct fc_bsg_reply *bsg_reply = job->reply;
 386         struct ulp_bde64 *bpl = NULL;
 387         struct lpfc_iocbq *cmdiocbq = NULL;
 388         struct lpfc_dmabuf *bmp = NULL, *cmp = NULL, *rmp = NULL;
 389         int request_nseg, reply_nseg;
 390         u32 num_entry;
 391         struct bsg_job_data *dd_data;
 392         unsigned long flags;
 393         uint32_t creg_val;
 394         int rc = 0;
 395         int iocb_stat;
 396         u16 ulp_context;
 397
 398         /* in case no data is transferred */
 399         bsg_reply->reply_payload_rcv_len = 0;
 400
 401         if (ndlp->nlp_flag & NLP_ELS_SND_MASK)
 402                 return -ENODEV;
 403
 404         /* allocate our bsg tracking structure */
 405         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
 406         if (!dd_data) {
 407                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 408                                 "2733 Failed allocation of dd_data\n");
 409                 rc = -ENOMEM;
 410                 goto no_dd_data;
 411         }
 412
 413         cmdiocbq = lpfc_sli_get_iocbq(phba);
 414         if (!cmdiocbq) {
 415                 rc = -ENOMEM;
 416                 goto free_dd;
 417         }
 418
 419         bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
 420         if (!bmp) {
 421                 rc = -ENOMEM;
 422                 goto free_cmdiocbq;
 423         }
 424         bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
 425         if (!bmp->virt) {
 426                 rc = -ENOMEM;
 427                 goto free_bmp;
 428         }
 429
 430         INIT_LIST_HEAD(&bmp->list);
 431
 432         bpl = (struct ulp_bde64 *) bmp->virt;
 433         request_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64);
 434         cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
 435                                      1, bpl, &request_nseg);
 436         if (!cmp) {
 437                 rc = -ENOMEM;
 438                 goto free_bmp;
 439         }
 440         lpfc_bsg_copy_data(cmp, &job->request_payload,
 441                            job->request_payload.payload_len, 1);
 442
 443         bpl += request_nseg;
 444         reply_nseg = LPFC_BPL_SIZE/sizeof(struct ulp_bde64) - request_nseg;
 445         rmp = lpfc_alloc_bsg_buffers(phba, job->reply_payload.payload_len, 0,
 446                                      bpl, &reply_nseg);
 447         if (!rmp) {
 448                 rc = -ENOMEM;
 449                 goto free_cmp;
 450         }
 451
 452         num_entry = request_nseg + reply_nseg;
 453
 454         if (phba->sli_rev == LPFC_SLI_REV4)
 455                 ulp_context = phba->sli4_hba.rpi_ids[ndlp->nlp_rpi];
 456         else
 457                 ulp_context = ndlp->nlp_rpi;
 458
 459         lpfc_sli_prep_gen_req(phba, cmdiocbq, bmp, ulp_context, num_entry,
 460                               phba->fc_ratov * 2);
 461
 462         cmdiocbq->num_bdes = num_entry;
 463         cmdiocbq->vport = phba->pport;
 464         cmdiocbq->cmd_dmabuf = cmp;
 465         cmdiocbq->bpl_dmabuf = bmp;
 466         cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC;
 467
 468         cmdiocbq->cmd_cmpl = lpfc_bsg_send_mgmt_cmd_cmp;
 469         cmdiocbq->context_un.dd_data = dd_data;
 470
 471         dd_data->type = TYPE_IOCB;
 472         dd_data->set_job = job;
 473         dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
 474         dd_data->context_un.iocb.rmp = rmp;
 475         job->dd_data = dd_data;
 476
 477         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
 478                 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
 479                         rc = -EIO ;
 480                         goto free_rmp;
 481                 }
 482                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 483                 writel(creg_val, phba->HCregaddr);
 484                 readl(phba->HCregaddr); /* flush */
 485         }
 486
 487         cmdiocbq->ndlp = lpfc_nlp_get(ndlp);
 488         if (!cmdiocbq->ndlp) {
 489                 rc = -ENODEV;
 490                 goto free_rmp;
 491         }
 492
 493         iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
 494         if (iocb_stat == IOCB_SUCCESS) {
 495                 spin_lock_irqsave(&phba->hbalock, flags);
 496                 /* make sure the I/O had not been completed yet */
 497                 if (cmdiocbq->cmd_flag & LPFC_IO_LIBDFC) {
 498                         /* open up abort window to timeout handler */
 499                         cmdiocbq->cmd_flag |= LPFC_IO_CMD_OUTSTANDING;
 500                 }
 501                 spin_unlock_irqrestore(&phba->hbalock, flags);
 502                 return 0; /* done for now */
 503         } else if (iocb_stat == IOCB_BUSY) {
 504                 rc = -EAGAIN;
 505         } else {
 506                 rc = -EIO;
 507         }
 508
 509         /* iocb failed so cleanup */
 510         lpfc_nlp_put(ndlp);
 511
 512 free_rmp:
 513         lpfc_free_bsg_buffers(phba, rmp);
 514 free_cmp:
 515         lpfc_free_bsg_buffers(phba, cmp);
 516 free_bmp:
 517         if (bmp->virt)
 518                 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
 519         kfree(bmp);
 520 free_cmdiocbq:
 521         lpfc_sli_release_iocbq(phba, cmdiocbq);
 522 free_dd:
 523         kfree(dd_data);
 524 no_dd_data:
 525         /* make error code available to userspace */
 526         bsg_reply->result = rc;
 527         job->dd_data = NULL;
 528         return rc;
 529 }
 530
 531 /**
 532  * lpfc_bsg_rport_els_cmp - lpfc_bsg_rport_els's completion handler
 533  * @phba: Pointer to HBA context object.
 534  * @cmdiocbq: Pointer to command iocb.
 535  * @rspiocbq: Pointer to response iocb.
 536  *
 537  * This function is the completion handler for iocbs issued using
 538  * lpfc_bsg_rport_els_cmp function. This function is called by the
 539  * ring event handler function without any lock held. This function
 540  * can be called from both worker thread context and interrupt
 541  * context. This function also can be called from other thread which
 542  * cleans up the SLI layer objects.
 543  * This function copies the contents of the response iocb to the
 544  * response iocb memory object provided by the caller of
 545  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
 546  * sleeps for the iocb completion.
 547  **/
 548 static void
 549 lpfc_bsg_rport_els_cmp(struct lpfc_hba *phba,
 550                         struct lpfc_iocbq *cmdiocbq,
 551                         struct lpfc_iocbq *rspiocbq)
 552 {
 553         struct bsg_job_data *dd_data;
 554         struct bsg_job *job;
 555         struct fc_bsg_reply *bsg_reply;
 556         struct lpfc_nodelist *ndlp;
 557         struct lpfc_dmabuf *pcmd = NULL, *prsp = NULL;
 558         struct fc_bsg_ctels_reply *els_reply;
 559         uint8_t *rjt_data;
 560         unsigned long flags;
 561         unsigned int rsp_size;
 562         int rc = 0;
 563         u32 ulp_status, ulp_word4, total_data_placed;
 564
 565         dd_data = cmdiocbq->context_un.dd_data;
 566         ndlp = dd_data->context_un.iocb.ndlp;
 567         cmdiocbq->ndlp = ndlp;
 568
 569         /* Determine if job has been aborted */
 570         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 571         job = dd_data->set_job;
 572         if (job) {
 573                 bsg_reply = job->reply;
 574                 /* Prevent timeout handling from trying to abort job  */
 575                 job->dd_data = NULL;
 576         }
 577         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 578
 579         /* Close the timeout handler abort window */
 580         spin_lock_irqsave(&phba->hbalock, flags);
 581         cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING;
 582         spin_unlock_irqrestore(&phba->hbalock, flags);
 583
 584         ulp_status = get_job_ulpstatus(phba, rspiocbq);
 585         ulp_word4 = get_job_word4(phba, rspiocbq);
 586         total_data_placed = get_job_data_placed(phba, rspiocbq);
 587         pcmd = cmdiocbq->cmd_dmabuf;
 588         prsp = (struct lpfc_dmabuf *)pcmd->list.next;
 589
 590         /* Copy the completed job data or determine the job status if job is
 591          * still active
 592          */
 593
 594         if (job) {
 595                 if (ulp_status == IOSTAT_SUCCESS) {
 596                         rsp_size = total_data_placed;
 597                         bsg_reply->reply_payload_rcv_len =
 598                                 sg_copy_from_buffer(job->reply_payload.sg_list,
 599                                                     job->reply_payload.sg_cnt,
 600                                                     prsp->virt,
 601                                                     rsp_size);
 602                 } else if (ulp_status == IOSTAT_LS_RJT) {
 603                         bsg_reply->reply_payload_rcv_len =
 604                                 sizeof(struct fc_bsg_ctels_reply);
 605                         /* LS_RJT data returned in word 4 */
 606                         rjt_data = (uint8_t *)&ulp_word4;
 607                         els_reply = &bsg_reply->reply_data.ctels_reply;
 608                         els_reply->status = FC_CTELS_STATUS_REJECT;
 609                         els_reply->rjt_data.action = rjt_data[3];
 610                         els_reply->rjt_data.reason_code = rjt_data[2];
 611                         els_reply->rjt_data.reason_explanation = rjt_data[1];
 612                         els_reply->rjt_data.vendor_unique = rjt_data[0];
 613                 } else if (ulp_status == IOSTAT_LOCAL_REJECT &&
 614                            (ulp_word4 & IOERR_PARAM_MASK) ==
 615                            IOERR_SEQUENCE_TIMEOUT) {
 616                         rc = -ETIMEDOUT;
 617                 } else {
 618                         rc = -EIO;
 619                 }
 620         }
 621
 622         lpfc_els_free_iocb(phba, cmdiocbq);
 623
 624         lpfc_nlp_put(ndlp);
 625         kfree(dd_data);
 626
 627         /* Complete the job if the job is still active */
 628
 629         if (job) {
 630                 bsg_reply->result = rc;
 631                 bsg_job_done(job, bsg_reply->result,
 632                                bsg_reply->reply_payload_rcv_len);
 633         }
 634         return;
 635 }
 636
 637 /**
 638  * lpfc_bsg_rport_els - send an ELS command from a bsg request
 639  * @job: fc_bsg_job to handle
 640  **/
 641 static int
 642 lpfc_bsg_rport_els(struct bsg_job *job)
 643 {
 644         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
 645         struct lpfc_hba *phba = vport->phba;
 646         struct lpfc_rport_data *rdata = fc_bsg_to_rport(job)->dd_data;
 647         struct lpfc_nodelist *ndlp = rdata->pnode;
 648         struct fc_bsg_request *bsg_request = job->request;
 649         struct fc_bsg_reply *bsg_reply = job->reply;
 650         uint32_t elscmd;
 651         uint32_t cmdsize;
 652         struct lpfc_iocbq *cmdiocbq;
 653         uint16_t rpi = 0;
 654         struct bsg_job_data *dd_data;
 655         unsigned long flags;
 656         uint32_t creg_val;
 657         int rc = 0;
 658
 659         /* in case no data is transferred */
 660         bsg_reply->reply_payload_rcv_len = 0;
 661
 662         /* verify the els command is not greater than the
 663          * maximum ELS transfer size.
 664          */
 665
 666         if (job->request_payload.payload_len > FCELSSIZE) {
 667                 rc = -EINVAL;
 668                 goto no_dd_data;
 669         }
 670
 671         /* allocate our bsg tracking structure */
 672         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
 673         if (!dd_data) {
 674                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 675                                 "2735 Failed allocation of dd_data\n");
 676                 rc = -ENOMEM;
 677                 goto no_dd_data;
 678         }
 679
 680         elscmd = bsg_request->rqst_data.r_els.els_code;
 681         cmdsize = job->request_payload.payload_len;
 682
 683         if (!lpfc_nlp_get(ndlp)) {
 684                 rc = -ENODEV;
 685                 goto free_dd_data;
 686         }
 687
 688         /* We will use the allocated dma buffers by prep els iocb for command
 689          * and response to ensure if the job times out and the request is freed,
 690          * we won't be dma into memory that is no longer allocated to for the
 691          * request.
 692          */
 693         cmdiocbq = lpfc_prep_els_iocb(vport, 1, cmdsize, 0, ndlp,
 694                                       ndlp->nlp_DID, elscmd);
 695         if (!cmdiocbq) {
 696                 rc = -EIO;
 697                 goto release_ndlp;
 698         }
 699
 700         /* Transfer the request payload to allocated command dma buffer */
 701         sg_copy_to_buffer(job->request_payload.sg_list,
 702                           job->request_payload.sg_cnt,
 703                           cmdiocbq->cmd_dmabuf->virt,
 704                           cmdsize);
 705
 706         rpi = ndlp->nlp_rpi;
 707
 708         if (phba->sli_rev == LPFC_SLI_REV4)
 709                 bf_set(wqe_ctxt_tag, &cmdiocbq->wqe.generic.wqe_com,
 710                        phba->sli4_hba.rpi_ids[rpi]);
 711         else
 712                 cmdiocbq->iocb.ulpContext = rpi;
 713         cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC;
 714         cmdiocbq->context_un.dd_data = dd_data;
 715         cmdiocbq->ndlp = ndlp;
 716         cmdiocbq->cmd_cmpl = lpfc_bsg_rport_els_cmp;
 717         dd_data->type = TYPE_IOCB;
 718         dd_data->set_job = job;
 719         dd_data->context_un.iocb.cmdiocbq = cmdiocbq;
 720         dd_data->context_un.iocb.ndlp = ndlp;
 721         dd_data->context_un.iocb.rmp = NULL;
 722         job->dd_data = dd_data;
 723
 724         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
 725                 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
 726                         rc = -EIO;
 727                         goto linkdown_err;
 728                 }
 729                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
 730                 writel(creg_val, phba->HCregaddr);
 731                 readl(phba->HCregaddr); /* flush */
 732         }
 733
 734         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq, 0);
 735         if (rc == IOCB_SUCCESS) {
 736                 spin_lock_irqsave(&phba->hbalock, flags);
 737                 /* make sure the I/O had not been completed/released */
 738                 if (cmdiocbq->cmd_flag & LPFC_IO_LIBDFC) {
 739                         /* open up abort window to timeout handler */
 740                         cmdiocbq->cmd_flag |= LPFC_IO_CMD_OUTSTANDING;
 741                 }
 742                 spin_unlock_irqrestore(&phba->hbalock, flags);
 743                 return 0; /* done for now */
 744         } else if (rc == IOCB_BUSY) {
 745                 rc = -EAGAIN;
 746         } else {
 747                 rc = -EIO;
 748         }
 749
 750         /* I/O issue failed.  Cleanup resources. */
 751
 752 linkdown_err:
 753         lpfc_els_free_iocb(phba, cmdiocbq);
 754
 755 release_ndlp:
 756         lpfc_nlp_put(ndlp);
 757
 758 free_dd_data:
 759         kfree(dd_data);
 760
 761 no_dd_data:
 762         /* make error code available to userspace */
 763         bsg_reply->result = rc;
 764         job->dd_data = NULL;
 765         return rc;
 766 }
 767
 768 /**
 769  * lpfc_bsg_event_free - frees an allocated event structure
 770  * @kref: Pointer to a kref.
 771  *
 772  * Called from kref_put. Back cast the kref into an event structure address.
 773  * Free any events to get, delete associated nodes, free any events to see,
 774  * free any data then free the event itself.
 775  **/
 776 static void
 777 lpfc_bsg_event_free(struct kref *kref)
 778 {
 779         struct lpfc_bsg_event *evt = container_of(kref, struct lpfc_bsg_event,
 780                                                   kref);
 781         struct event_data *ed;
 782
 783         list_del(&evt->node);
 784
 785         while (!list_empty(&evt->events_to_get)) {
 786                 ed = list_entry(evt->events_to_get.next, typeof(*ed), node);
 787                 list_del(&ed->node);
 788                 kfree(ed->data);
 789                 kfree(ed);
 790         }
 791
 792         while (!list_empty(&evt->events_to_see)) {
 793                 ed = list_entry(evt->events_to_see.next, typeof(*ed), node);
 794                 list_del(&ed->node);
 795                 kfree(ed->data);
 796                 kfree(ed);
 797         }
 798
 799         kfree(evt->dd_data);
 800         kfree(evt);
 801 }
 802
 803 /**
 804  * lpfc_bsg_event_ref - increments the kref for an event
 805  * @evt: Pointer to an event structure.
 806  **/
 807 static inline void
 808 lpfc_bsg_event_ref(struct lpfc_bsg_event *evt)
 809 {
 810         kref_get(&evt->kref);
 811 }
 812
 813 /**
 814  * lpfc_bsg_event_unref - Uses kref_put to free an event structure
 815  * @evt: Pointer to an event structure.
 816  **/
 817 static inline void
 818 lpfc_bsg_event_unref(struct lpfc_bsg_event *evt)
 819 {
 820         kref_put(&evt->kref, lpfc_bsg_event_free);
 821 }
 822
 823 /**
 824  * lpfc_bsg_event_new - allocate and initialize a event structure
 825  * @ev_mask: Mask of events.
 826  * @ev_reg_id: Event reg id.
 827  * @ev_req_id: Event request id.
 828  **/
 829 static struct lpfc_bsg_event *
 830 lpfc_bsg_event_new(uint32_t ev_mask, int ev_reg_id, uint32_t ev_req_id)
 831 {
 832         struct lpfc_bsg_event *evt = kzalloc(sizeof(*evt), GFP_KERNEL);
 833
 834         if (!evt)
 835                 return NULL;
 836
 837         INIT_LIST_HEAD(&evt->events_to_get);
 838         INIT_LIST_HEAD(&evt->events_to_see);
 839         evt->type_mask = ev_mask;
 840         evt->req_id = ev_req_id;
 841         evt->reg_id = ev_reg_id;
 842         evt->wait_time_stamp = jiffies;
 843         evt->dd_data = NULL;
 844         init_waitqueue_head(&evt->wq);
 845         kref_init(&evt->kref);
 846         return evt;
 847 }
 848
 849 /**
 850  * diag_cmd_data_free - Frees an lpfc dma buffer extension
 851  * @phba: Pointer to HBA context object.
 852  * @mlist: Pointer to an lpfc dma buffer extension.
 853  **/
 854 static int
 855 diag_cmd_data_free(struct lpfc_hba *phba, struct lpfc_dmabufext *mlist)
 856 {
 857         struct lpfc_dmabufext *mlast;
 858         struct pci_dev *pcidev;
 859         struct list_head head, *curr, *next;
 860
 861         if ((!mlist) || (!lpfc_is_link_up(phba) &&
 862                 (phba->link_flag & LS_LOOPBACK_MODE))) {
 863                 return 0;
 864         }
 865
 866         pcidev = phba->pcidev;
 867         list_add_tail(&head, &mlist->dma.list);
 868
 869         list_for_each_safe(curr, next, &head) {
 870                 mlast = list_entry(curr, struct lpfc_dmabufext , dma.list);
 871                 if (mlast->dma.virt)
 872                         dma_free_coherent(&pcidev->dev,
 873                                           mlast->size,
 874                                           mlast->dma.virt,
 875                                           mlast->dma.phys);
 876                 kfree(mlast);
 877         }
 878         return 0;
 879 }
 880
 881 /*
 882  * lpfc_bsg_ct_unsol_event - process an unsolicited CT command
 883  *
 884  * This function is called when an unsolicited CT command is received.  It
 885  * forwards the event to any processes registered to receive CT events.
 886  **/
 887 int
 888 lpfc_bsg_ct_unsol_event(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
 889                         struct lpfc_iocbq *piocbq)
 890 {
 891         uint32_t evt_req_id = 0;
 892         u16 cmd;
 893         struct lpfc_dmabuf *dmabuf = NULL;
 894         struct lpfc_bsg_event *evt;
 895         struct event_data *evt_dat = NULL;
 896         struct lpfc_iocbq *iocbq;
 897         IOCB_t *iocb = NULL;
 898         size_t offset = 0;
 899         struct list_head head;
 900         struct ulp_bde64 *bde;
 901         dma_addr_t dma_addr;
 902         int i;
 903         struct lpfc_dmabuf *bdeBuf1 = piocbq->cmd_dmabuf;
 904         struct lpfc_dmabuf *bdeBuf2 = piocbq->bpl_dmabuf;
 905         struct lpfc_sli_ct_request *ct_req;
 906         struct bsg_job *job = NULL;
 907         struct fc_bsg_reply *bsg_reply;
 908         struct bsg_job_data *dd_data = NULL;
 909         unsigned long flags;
 910         int size = 0;
 911         u32 bde_count = 0;
 912
 913         INIT_LIST_HEAD(&head);
 914         list_add_tail(&head, &piocbq->list);
 915
 916         ct_req = (struct lpfc_sli_ct_request *)bdeBuf1->virt;
 917         evt_req_id = ct_req->FsType;
 918         cmd = be16_to_cpu(ct_req->CommandResponse.bits.CmdRsp);
 919
 920         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 921         list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
 922                 if (!(evt->type_mask & FC_REG_CT_EVENT) ||
 923                         evt->req_id != evt_req_id)
 924                         continue;
 925
 926                 lpfc_bsg_event_ref(evt);
 927                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 928                 evt_dat = kzalloc(sizeof(*evt_dat), GFP_KERNEL);
 929                 if (evt_dat == NULL) {
 930                         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 931                         lpfc_bsg_event_unref(evt);
 932                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 933                                         "2614 Memory allocation failed for "
 934                                         "CT event\n");
 935                         break;
 936                 }
 937
 938                 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
 939                         /* take accumulated byte count from the last iocbq */
 940                         iocbq = list_entry(head.prev, typeof(*iocbq), list);
 941                         if (phba->sli_rev == LPFC_SLI_REV4)
 942                                 evt_dat->len = iocbq->wcqe_cmpl.total_data_placed;
 943                         else
 944                                 evt_dat->len = iocbq->iocb.unsli3.rcvsli3.acc_len;
 945                 } else {
 946                         list_for_each_entry(iocbq, &head, list) {
 947                                 iocb = &iocbq->iocb;
 948                                 for (i = 0; i < iocb->ulpBdeCount;
 949                                      i++)
 950                                         evt_dat->len +=
 951                                         iocb->un.cont64[i].tus.f.bdeSize;
 952                         }
 953                 }
 954
 955                 evt_dat->data = kzalloc(evt_dat->len, GFP_KERNEL);
 956                 if (evt_dat->data == NULL) {
 957                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
 958                                         "2615 Memory allocation failed for "
 959                                         "CT event data, size %d\n",
 960                                         evt_dat->len);
 961                         kfree(evt_dat);
 962                         spin_lock_irqsave(&phba->ct_ev_lock, flags);
 963                         lpfc_bsg_event_unref(evt);
 964                         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
 965                         goto error_ct_unsol_exit;
 966                 }
 967
 968                 list_for_each_entry(iocbq, &head, list) {
 969                         size = 0;
 970                         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
 971                                 bdeBuf1 = iocbq->cmd_dmabuf;
 972                                 bdeBuf2 = iocbq->bpl_dmabuf;
 973                         }
 974                         if (phba->sli_rev == LPFC_SLI_REV4)
 975                                 bde_count = iocbq->wcqe_cmpl.word3;
 976                         else
 977                                 bde_count = iocbq->iocb.ulpBdeCount;
 978                         for (i = 0; i < bde_count; i++) {
 979                                 if (phba->sli3_options &
 980                                     LPFC_SLI3_HBQ_ENABLED) {
 981                                         if (i == 0) {
 982                                                 size = iocbq->wqe.gen_req.bde.tus.f.bdeSize;
 983                                                 dmabuf = bdeBuf1;
 984                                         } else if (i == 1) {
 985                                                 size = iocbq->unsol_rcv_len;
 986                                                 dmabuf = bdeBuf2;
 987                                         }
 988                                         if ((offset + size) > evt_dat->len)
 989                                                 size = evt_dat->len - offset;
 990                                 } else {
 991                                         size = iocbq->iocb.un.cont64[i].
 992                                                 tus.f.bdeSize;
 993                                         bde = &iocbq->iocb.un.cont64[i];
 994                                         dma_addr = getPaddr(bde->addrHigh,
 995                                                             bde->addrLow);
 996                                         dmabuf = lpfc_sli_ringpostbuf_get(phba,
 997                                                         pring, dma_addr);
 998                                 }
 999                                 if (!dmabuf) {
1000                                         lpfc_printf_log(phba, KERN_ERR,
1001                                                 LOG_LIBDFC, "2616 No dmabuf "
1002                                                 "found for iocbq x%px\n",
1003                                                 iocbq);
1004                                         kfree(evt_dat->data);
1005                                         kfree(evt_dat);
1006                                         spin_lock_irqsave(&phba->ct_ev_lock,
1007                                                 flags);
1008                                         lpfc_bsg_event_unref(evt);
1009                                         spin_unlock_irqrestore(
1010                                                 &phba->ct_ev_lock, flags);
1011                                         goto error_ct_unsol_exit;
1012                                 }
1013                                 memcpy((char *)(evt_dat->data) + offset,
1014                                        dmabuf->virt, size);
1015                                 offset += size;
1016                                 if (evt_req_id != SLI_CT_ELX_LOOPBACK &&
1017                                     !(phba->sli3_options &
1018                                       LPFC_SLI3_HBQ_ENABLED)) {
1019                                         lpfc_sli_ringpostbuf_put(phba, pring,
1020                                                                  dmabuf);
1021                                 } else {
1022                                         switch (cmd) {
1023                                         case ELX_LOOPBACK_DATA:
1024                                                 if (phba->sli_rev <
1025                                                     LPFC_SLI_REV4)
1026                                                         diag_cmd_data_free(phba,
1027                                                         (struct lpfc_dmabufext
1028                                                          *)dmabuf);
1029                                                 break;
1030                                         case ELX_LOOPBACK_XRI_SETUP:
1031                                                 if ((phba->sli_rev ==
1032                                                         LPFC_SLI_REV2) ||
1033                                                         (phba->sli3_options &
1034                                                         LPFC_SLI3_HBQ_ENABLED
1035                                                         )) {
1036                                                         lpfc_in_buf_free(phba,
1037                                                                         dmabuf);
1038                                                 } else {
1039                                                         lpfc_sli3_post_buffer(phba,
1040                                                                               pring,
1041                                                                               1);
1042                                                 }
1043                                                 break;
1044                                         default:
1045                                                 if (!(phba->sli3_options &
1046                                                       LPFC_SLI3_HBQ_ENABLED))
1047                                                         lpfc_sli3_post_buffer(phba,
1048                                                                               pring,
1049                                                                               1);
1050                                                 break;
1051                                         }
1052                                 }
1053                         }
1054                 }
1055
1056                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1057                 if (phba->sli_rev == LPFC_SLI_REV4) {
1058                         evt_dat->immed_dat = phba->ctx_idx;
1059                         phba->ctx_idx = (phba->ctx_idx + 1) % LPFC_CT_CTX_MAX;
1060                         /* Provide warning for over-run of the ct_ctx array */
1061                         if (phba->ct_ctx[evt_dat->immed_dat].valid ==
1062                             UNSOL_VALID)
1063                                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1064                                                 "2717 CT context array entry "
1065                                                 "[%d] over-run: oxid:x%x, "
1066                                                 "sid:x%x\n", phba->ctx_idx,
1067                                                 phba->ct_ctx[
1068                                                     evt_dat->immed_dat].oxid,
1069                                                 phba->ct_ctx[
1070                                                     evt_dat->immed_dat].SID);
1071                         phba->ct_ctx[evt_dat->immed_dat].rxid =
1072                                 get_job_ulpcontext(phba, piocbq);
1073                         phba->ct_ctx[evt_dat->immed_dat].oxid =
1074                                 get_job_rcvoxid(phba, piocbq);
1075                         phba->ct_ctx[evt_dat->immed_dat].SID =
1076                                 bf_get(wqe_els_did,
1077                                        &piocbq->wqe.xmit_els_rsp.wqe_dest);
1078                         phba->ct_ctx[evt_dat->immed_dat].valid = UNSOL_VALID;
1079                 } else
1080                         evt_dat->immed_dat = get_job_ulpcontext(phba, piocbq);
1081
1082                 evt_dat->type = FC_REG_CT_EVENT;
1083                 list_add(&evt_dat->node, &evt->events_to_see);
1084                 if (evt_req_id == SLI_CT_ELX_LOOPBACK) {
1085                         wake_up_interruptible(&evt->wq);
1086                         lpfc_bsg_event_unref(evt);
1087                         break;
1088                 }
1089
1090                 list_move(evt->events_to_see.prev, &evt->events_to_get);
1091
1092                 dd_data = (struct bsg_job_data *)evt->dd_data;
1093                 job = dd_data->set_job;
1094                 dd_data->set_job = NULL;
1095                 lpfc_bsg_event_unref(evt);
1096                 if (job) {
1097                         bsg_reply = job->reply;
1098                         bsg_reply->reply_payload_rcv_len = size;
1099                         /* make error code available to userspace */
1100                         bsg_reply->result = 0;
1101                         job->dd_data = NULL;
1102                         /* complete the job back to userspace */
1103                         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1104                         bsg_job_done(job, bsg_reply->result,
1105                                        bsg_reply->reply_payload_rcv_len);
1106                         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1107                 }
1108         }
1109         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1110
1111 error_ct_unsol_exit:
1112         if (!list_empty(&head))
1113                 list_del(&head);
1114         if ((phba->sli_rev < LPFC_SLI_REV4) &&
1115             (evt_req_id == SLI_CT_ELX_LOOPBACK))
1116                 return 0;
1117         return 1;
1118 }
1119
1120 /**
1121  * lpfc_bsg_ct_unsol_abort - handler ct abort to management plane
1122  * @phba: Pointer to HBA context object.
1123  * @dmabuf: pointer to a dmabuf that describes the FC sequence
1124  *
1125  * This function handles abort to the CT command toward management plane
1126  * for SLI4 port.
1127  *
1128  * If the pending context of a CT command to management plane present, clears
1129  * such context and returns 1 for handled; otherwise, it returns 0 indicating
1130  * no context exists.
1131  **/
1132 int
1133 lpfc_bsg_ct_unsol_abort(struct lpfc_hba *phba, struct hbq_dmabuf *dmabuf)
1134 {
1135         struct fc_frame_header fc_hdr;
1136         struct fc_frame_header *fc_hdr_ptr = &fc_hdr;
1137         int ctx_idx, handled = 0;
1138         uint16_t oxid, rxid;
1139         uint32_t sid;
1140
1141         memcpy(fc_hdr_ptr, dmabuf->hbuf.virt, sizeof(struct fc_frame_header));
1142         sid = sli4_sid_from_fc_hdr(fc_hdr_ptr);
1143         oxid = be16_to_cpu(fc_hdr_ptr->fh_ox_id);
1144         rxid = be16_to_cpu(fc_hdr_ptr->fh_rx_id);
1145
1146         for (ctx_idx = 0; ctx_idx < LPFC_CT_CTX_MAX; ctx_idx++) {
1147                 if (phba->ct_ctx[ctx_idx].valid != UNSOL_VALID)
1148                         continue;
1149                 if (phba->ct_ctx[ctx_idx].rxid != rxid)
1150                         continue;
1151                 if (phba->ct_ctx[ctx_idx].oxid != oxid)
1152                         continue;
1153                 if (phba->ct_ctx[ctx_idx].SID != sid)
1154                         continue;
1155                 phba->ct_ctx[ctx_idx].valid = UNSOL_INVALID;
1156                 handled = 1;
1157         }
1158         return handled;
1159 }
1160
1161 /**
1162  * lpfc_bsg_hba_set_event - process a SET_EVENT bsg vendor command
1163  * @job: SET_EVENT fc_bsg_job
1164  **/
1165 static int
1166 lpfc_bsg_hba_set_event(struct bsg_job *job)
1167 {
1168         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1169         struct lpfc_hba *phba = vport->phba;
1170         struct fc_bsg_request *bsg_request = job->request;
1171         struct set_ct_event *event_req;
1172         struct lpfc_bsg_event *evt;
1173         int rc = 0;
1174         struct bsg_job_data *dd_data = NULL;
1175         uint32_t ev_mask;
1176         unsigned long flags;
1177
1178         if (job->request_len <
1179             sizeof(struct fc_bsg_request) + sizeof(struct set_ct_event)) {
1180                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1181                                 "2612 Received SET_CT_EVENT below minimum "
1182                                 "size\n");
1183                 rc = -EINVAL;
1184                 goto job_error;
1185         }
1186
1187         event_req = (struct set_ct_event *)
1188                 bsg_request->rqst_data.h_vendor.vendor_cmd;
1189         ev_mask = ((uint32_t)(unsigned long)event_req->type_mask &
1190                                 FC_REG_EVENT_MASK);
1191         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1192         list_for_each_entry(evt, &phba->ct_ev_waiters, node) {
1193                 if (evt->reg_id == event_req->ev_reg_id) {
1194                         lpfc_bsg_event_ref(evt);
1195                         evt->wait_time_stamp = jiffies;
1196                         dd_data = (struct bsg_job_data *)evt->dd_data;
1197                         break;
1198                 }
1199         }
1200         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1201
1202         if (&evt->node == &phba->ct_ev_waiters) {
1203                 /* no event waiting struct yet - first call */
1204                 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1205                 if (dd_data == NULL) {
1206                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1207                                         "2734 Failed allocation of dd_data\n");
1208                         rc = -ENOMEM;
1209                         goto job_error;
1210                 }
1211                 evt = lpfc_bsg_event_new(ev_mask, event_req->ev_reg_id,
1212                                         event_req->ev_req_id);
1213                 if (!evt) {
1214                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1215                                         "2617 Failed allocation of event "
1216                                         "waiter\n");
1217                         rc = -ENOMEM;
1218                         goto job_error;
1219                 }
1220                 dd_data->type = TYPE_EVT;
1221                 dd_data->set_job = NULL;
1222                 dd_data->context_un.evt = evt;
1223                 evt->dd_data = (void *)dd_data;
1224                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
1225                 list_add(&evt->node, &phba->ct_ev_waiters);
1226                 lpfc_bsg_event_ref(evt);
1227                 evt->wait_time_stamp = jiffies;
1228                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1229         }
1230
1231         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1232         evt->waiting = 1;
1233         dd_data->set_job = job; /* for unsolicited command */
1234         job->dd_data = dd_data; /* for fc transport timeout callback*/
1235         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1236         return 0; /* call job done later */
1237
1238 job_error:
1239         kfree(dd_data);
1240         job->dd_data = NULL;
1241         return rc;
1242 }
1243
1244 /**
1245  * lpfc_bsg_hba_get_event - process a GET_EVENT bsg vendor command
1246  * @job: GET_EVENT fc_bsg_job
1247  **/
1248 static int
1249 lpfc_bsg_hba_get_event(struct bsg_job *job)
1250 {
1251         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1252         struct lpfc_hba *phba = vport->phba;
1253         struct fc_bsg_request *bsg_request = job->request;
1254         struct fc_bsg_reply *bsg_reply = job->reply;
1255         struct get_ct_event *event_req;
1256         struct get_ct_event_reply *event_reply;
1257         struct lpfc_bsg_event *evt, *evt_next;
1258         struct event_data *evt_dat = NULL;
1259         unsigned long flags;
1260         uint32_t rc = 0;
1261
1262         if (job->request_len <
1263             sizeof(struct fc_bsg_request) + sizeof(struct get_ct_event)) {
1264                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1265                                 "2613 Received GET_CT_EVENT request below "
1266                                 "minimum size\n");
1267                 rc = -EINVAL;
1268                 goto job_error;
1269         }
1270
1271         event_req = (struct get_ct_event *)
1272                 bsg_request->rqst_data.h_vendor.vendor_cmd;
1273
1274         event_reply = (struct get_ct_event_reply *)
1275                 bsg_reply->reply_data.vendor_reply.vendor_rsp;
1276         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1277         list_for_each_entry_safe(evt, evt_next, &phba->ct_ev_waiters, node) {
1278                 if (evt->reg_id == event_req->ev_reg_id) {
1279                         if (list_empty(&evt->events_to_get))
1280                                 break;
1281                         lpfc_bsg_event_ref(evt);
1282                         evt->wait_time_stamp = jiffies;
1283                         evt_dat = list_entry(evt->events_to_get.prev,
1284                                              struct event_data, node);
1285                         list_del(&evt_dat->node);
1286                         break;
1287                 }
1288         }
1289         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1290
1291         /* The app may continue to ask for event data until it gets
1292          * an error indicating that there isn't anymore
1293          */
1294         if (evt_dat == NULL) {
1295                 bsg_reply->reply_payload_rcv_len = 0;
1296                 rc = -ENOENT;
1297                 goto job_error;
1298         }
1299
1300         if (evt_dat->len > job->request_payload.payload_len) {
1301                 evt_dat->len = job->request_payload.payload_len;
1302                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1303                                 "2618 Truncated event data at %d "
1304                                 "bytes\n",
1305                                 job->request_payload.payload_len);
1306         }
1307
1308         event_reply->type = evt_dat->type;
1309         event_reply->immed_data = evt_dat->immed_dat;
1310         if (evt_dat->len > 0)
1311                 bsg_reply->reply_payload_rcv_len =
1312                         sg_copy_from_buffer(job->request_payload.sg_list,
1313                                             job->request_payload.sg_cnt,
1314                                             evt_dat->data, evt_dat->len);
1315         else
1316                 bsg_reply->reply_payload_rcv_len = 0;
1317
1318         if (evt_dat) {
1319                 kfree(evt_dat->data);
1320                 kfree(evt_dat);
1321         }
1322
1323         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1324         lpfc_bsg_event_unref(evt);
1325         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1326         job->dd_data = NULL;
1327         bsg_reply->result = 0;
1328         bsg_job_done(job, bsg_reply->result,
1329                        bsg_reply->reply_payload_rcv_len);
1330         return 0;
1331
1332 job_error:
1333         job->dd_data = NULL;
1334         bsg_reply->result = rc;
1335         return rc;
1336 }
1337
1338 /**
1339  * lpfc_issue_ct_rsp_cmp - lpfc_issue_ct_rsp's completion handler
1340  * @phba: Pointer to HBA context object.
1341  * @cmdiocbq: Pointer to command iocb.
1342  * @rspiocbq: Pointer to response iocb.
1343  *
1344  * This function is the completion handler for iocbs issued using
1345  * lpfc_issue_ct_rsp_cmp function. This function is called by the
1346  * ring event handler function without any lock held. This function
1347  * can be called from both worker thread context and interrupt
1348  * context. This function also can be called from other thread which
1349  * cleans up the SLI layer objects.
1350  * This function copy the contents of the response iocb to the
1351  * response iocb memory object provided by the caller of
1352  * lpfc_sli_issue_iocb_wait and then wakes up the thread which
1353  * sleeps for the iocb completion.
1354  **/
1355 static void
1356 lpfc_issue_ct_rsp_cmp(struct lpfc_hba *phba,
1357                         struct lpfc_iocbq *cmdiocbq,
1358                         struct lpfc_iocbq *rspiocbq)
1359 {
1360         struct bsg_job_data *dd_data;
1361         struct bsg_job *job;
1362         struct fc_bsg_reply *bsg_reply;
1363         struct lpfc_dmabuf *bmp, *cmp;
1364         struct lpfc_nodelist *ndlp;
1365         unsigned long flags;
1366         int rc = 0;
1367         u32 ulp_status, ulp_word4;
1368
1369         dd_data = cmdiocbq->context_un.dd_data;
1370
1371         /* Determine if job has been aborted */
1372         spin_lock_irqsave(&phba->ct_ev_lock, flags);
1373         job = dd_data->set_job;
1374         if (job) {
1375                 /* Prevent timeout handling from trying to abort job  */
1376                 job->dd_data = NULL;
1377         }
1378         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
1379
1380         /* Close the timeout handler abort window */
1381         spin_lock_irqsave(&phba->hbalock, flags);
1382         cmdiocbq->cmd_flag &= ~LPFC_IO_CMD_OUTSTANDING;
1383         spin_unlock_irqrestore(&phba->hbalock, flags);
1384
1385         ndlp = dd_data->context_un.iocb.ndlp;
1386         cmp = cmdiocbq->cmd_dmabuf;
1387         bmp = cmdiocbq->bpl_dmabuf;
1388
1389         ulp_status = get_job_ulpstatus(phba, rspiocbq);
1390         ulp_word4 = get_job_word4(phba, rspiocbq);
1391
1392         /* Copy the completed job data or set the error status */
1393
1394         if (job) {
1395                 bsg_reply = job->reply;
1396                 if (ulp_status) {
1397                         if (ulp_status == IOSTAT_LOCAL_REJECT) {
1398                                 switch (ulp_word4 & IOERR_PARAM_MASK) {
1399                                 case IOERR_SEQUENCE_TIMEOUT:
1400                                         rc = -ETIMEDOUT;
1401                                         break;
1402                                 case IOERR_INVALID_RPI:
1403                                         rc = -EFAULT;
1404                                         break;
1405                                 default:
1406                                         rc = -EACCES;
1407                                         break;
1408                                 }
1409                         } else {
1410                                 rc = -EACCES;
1411                         }
1412                 } else {
1413                         bsg_reply->reply_payload_rcv_len = 0;
1414                 }
1415         }
1416
1417         lpfc_free_bsg_buffers(phba, cmp);
1418         lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1419         kfree(bmp);
1420         lpfc_sli_release_iocbq(phba, cmdiocbq);
1421         lpfc_nlp_put(ndlp);
1422         kfree(dd_data);
1423
1424         /* Complete the job if the job is still active */
1425
1426         if (job) {
1427                 bsg_reply->result = rc;
1428                 bsg_job_done(job, bsg_reply->result,
1429                                bsg_reply->reply_payload_rcv_len);
1430         }
1431         return;
1432 }
1433
1434 /**
1435  * lpfc_issue_ct_rsp - issue a ct response
1436  * @phba: Pointer to HBA context object.
1437  * @job: Pointer to the job object.
1438  * @tag: tag index value into the ports context exchange array.
1439  * @cmp: Pointer to a cmp dma buffer descriptor.
1440  * @bmp: Pointer to a bmp dma buffer descriptor.
1441  * @num_entry: Number of enties in the bde.
1442  **/
1443 static int
1444 lpfc_issue_ct_rsp(struct lpfc_hba *phba, struct bsg_job *job, uint32_t tag,
1445                   struct lpfc_dmabuf *cmp, struct lpfc_dmabuf *bmp,
1446                   int num_entry)
1447 {
1448         struct lpfc_iocbq *ctiocb = NULL;
1449         int rc = 0;
1450         struct lpfc_nodelist *ndlp = NULL;
1451         struct bsg_job_data *dd_data;
1452         unsigned long flags;
1453         uint32_t creg_val;
1454         u16 ulp_context, iotag;
1455
1456         ndlp = lpfc_findnode_did(phba->pport, phba->ct_ctx[tag].SID);
1457         if (!ndlp) {
1458                 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
1459                                 "2721 ndlp null for oxid %x SID %x\n",
1460                                 phba->ct_ctx[tag].rxid,
1461                                 phba->ct_ctx[tag].SID);
1462                 return IOCB_ERROR;
1463         }
1464
1465         /* allocate our bsg tracking structure */
1466         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
1467         if (!dd_data) {
1468                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1469                                 "2736 Failed allocation of dd_data\n");
1470                 rc = -ENOMEM;
1471                 goto no_dd_data;
1472         }
1473
1474         /* Allocate buffer for  command iocb */
1475         ctiocb = lpfc_sli_get_iocbq(phba);
1476         if (!ctiocb) {
1477                 rc = -ENOMEM;
1478                 goto no_ctiocb;
1479         }
1480
1481         if (phba->sli_rev == LPFC_SLI_REV4) {
1482                 /* Do not issue unsol response if oxid not marked as valid */
1483                 if (phba->ct_ctx[tag].valid != UNSOL_VALID) {
1484                         rc = IOCB_ERROR;
1485                         goto issue_ct_rsp_exit;
1486                 }
1487
1488                 lpfc_sli_prep_xmit_seq64(phba, ctiocb, bmp,
1489                                          phba->sli4_hba.rpi_ids[ndlp->nlp_rpi],
1490                                          phba->ct_ctx[tag].oxid, num_entry,
1491                                          FC_RCTL_DD_SOL_CTL, 1,
1492                                          CMD_XMIT_SEQUENCE64_WQE);
1493
1494                 /* The exchange is done, mark the entry as invalid */
1495                 phba->ct_ctx[tag].valid = UNSOL_INVALID;
1496                 iotag = get_wqe_reqtag(ctiocb);
1497         } else {
1498                 lpfc_sli_prep_xmit_seq64(phba, ctiocb, bmp, 0, tag, num_entry,
1499                                          FC_RCTL_DD_SOL_CTL, 1,
1500                                          CMD_XMIT_SEQUENCE64_CX);
1501                 ctiocb->num_bdes = num_entry;
1502                 iotag = ctiocb->iocb.ulpIoTag;
1503         }
1504
1505         ulp_context = get_job_ulpcontext(phba, ctiocb);
1506
1507         /* Xmit CT response on exchange <xid> */
1508         lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
1509                         "2722 Xmit CT response on exchange x%x Data: x%x x%x x%x\n",
1510                         ulp_context, iotag, tag, phba->link_state);
1511
1512         ctiocb->cmd_flag |= LPFC_IO_LIBDFC;
1513         ctiocb->vport = phba->pport;
1514         ctiocb->context_un.dd_data = dd_data;
1515         ctiocb->cmd_dmabuf = cmp;
1516         ctiocb->bpl_dmabuf = bmp;
1517         ctiocb->ndlp = ndlp;
1518         ctiocb->cmd_cmpl = lpfc_issue_ct_rsp_cmp;
1519
1520         dd_data->type = TYPE_IOCB;
1521         dd_data->set_job = job;
1522         dd_data->context_un.iocb.cmdiocbq = ctiocb;
1523         dd_data->context_un.iocb.ndlp = lpfc_nlp_get(ndlp);
1524         if (!dd_data->context_un.iocb.ndlp) {
1525                 rc = -IOCB_ERROR;
1526                 goto issue_ct_rsp_exit;
1527         }
1528         dd_data->context_un.iocb.rmp = NULL;
1529         job->dd_data = dd_data;
1530
1531         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
1532                 if (lpfc_readl(phba->HCregaddr, &creg_val)) {
1533                         rc = -IOCB_ERROR;
1534                         goto issue_ct_rsp_exit;
1535                 }
1536                 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
1537                 writel(creg_val, phba->HCregaddr);
1538                 readl(phba->HCregaddr); /* flush */
1539         }
1540
1541         rc = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, ctiocb, 0);
1542         if (rc == IOCB_SUCCESS) {
1543                 spin_lock_irqsave(&phba->hbalock, flags);
1544                 /* make sure the I/O had not been completed/released */
1545                 if (ctiocb->cmd_flag & LPFC_IO_LIBDFC) {
1546                         /* open up abort window to timeout handler */
1547                         ctiocb->cmd_flag |= LPFC_IO_CMD_OUTSTANDING;
1548                 }
1549                 spin_unlock_irqrestore(&phba->hbalock, flags);
1550                 return 0; /* done for now */
1551         }
1552
1553         /* iocb failed so cleanup */
1554         job->dd_data = NULL;
1555         lpfc_nlp_put(ndlp);
1556
1557 issue_ct_rsp_exit:
1558         lpfc_sli_release_iocbq(phba, ctiocb);
1559 no_ctiocb:
1560         kfree(dd_data);
1561 no_dd_data:
1562         return rc;
1563 }
1564
1565 /**
1566  * lpfc_bsg_send_mgmt_rsp - process a SEND_MGMT_RESP bsg vendor command
1567  * @job: SEND_MGMT_RESP fc_bsg_job
1568  **/
1569 static int
1570 lpfc_bsg_send_mgmt_rsp(struct bsg_job *job)
1571 {
1572         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
1573         struct lpfc_hba *phba = vport->phba;
1574         struct fc_bsg_request *bsg_request = job->request;
1575         struct fc_bsg_reply *bsg_reply = job->reply;
1576         struct send_mgmt_resp *mgmt_resp = (struct send_mgmt_resp *)
1577                 bsg_request->rqst_data.h_vendor.vendor_cmd;
1578         struct ulp_bde64 *bpl;
1579         struct lpfc_dmabuf *bmp = NULL, *cmp = NULL;
1580         int bpl_entries;
1581         uint32_t tag = mgmt_resp->tag;
1582         unsigned long reqbfrcnt =
1583                         (unsigned long)job->request_payload.payload_len;
1584         int rc = 0;
1585
1586         /* in case no data is transferred */
1587         bsg_reply->reply_payload_rcv_len = 0;
1588
1589         if (!reqbfrcnt || (reqbfrcnt > (80 * BUF_SZ_4K))) {
1590                 rc = -ERANGE;
1591                 goto send_mgmt_rsp_exit;
1592         }
1593
1594         bmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1595         if (!bmp) {
1596                 rc = -ENOMEM;
1597                 goto send_mgmt_rsp_exit;
1598         }
1599
1600         bmp->virt = lpfc_mbuf_alloc(phba, 0, &bmp->phys);
1601         if (!bmp->virt) {
1602                 rc = -ENOMEM;
1603                 goto send_mgmt_rsp_free_bmp;
1604         }
1605
1606         INIT_LIST_HEAD(&bmp->list);
1607         bpl = (struct ulp_bde64 *) bmp->virt;
1608         bpl_entries = (LPFC_BPL_SIZE/sizeof(struct ulp_bde64));
1609         cmp = lpfc_alloc_bsg_buffers(phba, job->request_payload.payload_len,
1610                                      1, bpl, &bpl_entries);
1611         if (!cmp) {
1612                 rc = -ENOMEM;
1613                 goto send_mgmt_rsp_free_bmp;
1614         }
1615         lpfc_bsg_copy_data(cmp, &job->request_payload,
1616                            job->request_payload.payload_len, 1);
1617
1618         rc = lpfc_issue_ct_rsp(phba, job, tag, cmp, bmp, bpl_entries);
1619
1620         if (rc == IOCB_SUCCESS)
1621                 return 0; /* done for now */
1622
1623         rc = -EACCES;
1624
1625         lpfc_free_bsg_buffers(phba, cmp);
1626
1627 send_mgmt_rsp_free_bmp:
1628         if (bmp->virt)
1629                 lpfc_mbuf_free(phba, bmp->virt, bmp->phys);
1630         kfree(bmp);
1631 send_mgmt_rsp_exit:
1632         /* make error code available to userspace */
1633         bsg_reply->result = rc;
1634         job->dd_data = NULL;
1635         return rc;
1636 }
1637
1638 /**
1639  * lpfc_bsg_diag_mode_enter - process preparing into device diag loopback mode
1640  * @phba: Pointer to HBA context object.
1641  *
1642  * This function is responsible for preparing driver for diag loopback
1643  * on device.
1644  */
1645 static int
1646 lpfc_bsg_diag_mode_enter(struct lpfc_hba *phba)
1647 {
1648         struct lpfc_vport **vports;
1649         struct Scsi_Host *shost;
1650         struct lpfc_sli *psli;
1651         struct lpfc_queue *qp = NULL;
1652         struct lpfc_sli_ring *pring;
1653         int i = 0;
1654
1655         psli = &phba->sli;
1656         if (!psli)
1657                 return -ENODEV;
1658
1659
1660         if ((phba->link_state == LPFC_HBA_ERROR) ||
1661             (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
1662             (!(psli->sli_flag & LPFC_SLI_ACTIVE)))
1663                 return -EACCES;
1664
1665         vports = lpfc_create_vport_work_array(phba);
1666         if (vports) {
1667                 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1668                         shost = lpfc_shost_from_vport(vports[i]);
1669                         scsi_block_requests(shost);
1670                 }
1671                 lpfc_destroy_vport_work_array(phba, vports);
1672         } else {
1673                 shost = lpfc_shost_from_vport(phba->pport);
1674                 scsi_block_requests(shost);
1675         }
1676
1677         if (phba->sli_rev != LPFC_SLI_REV4) {
1678                 pring = &psli->sli3_ring[LPFC_FCP_RING];
1679                 lpfc_emptyq_wait(phba, &pring->txcmplq, &phba->hbalock);
1680                 return 0;
1681         }
1682         list_for_each_entry(qp, &phba->sli4_hba.lpfc_wq_list, wq_list) {
1683                 pring = qp->pring;
1684                 if (!pring || (pring->ringno != LPFC_FCP_RING))
1685                         continue;
1686                 if (!lpfc_emptyq_wait(phba, &pring->txcmplq,
1687                                       &pring->ring_lock))
1688                         break;
1689         }
1690         return 0;
1691 }
1692
1693 /**
1694  * lpfc_bsg_diag_mode_exit - exit process from device diag loopback mode
1695  * @phba: Pointer to HBA context object.
1696  *
1697  * This function is responsible for driver exit processing of setting up
1698  * diag loopback mode on device.
1699  */
1700 static void
1701 lpfc_bsg_diag_mode_exit(struct lpfc_hba *phba)
1702 {
1703         struct Scsi_Host *shost;
1704         struct lpfc_vport **vports;
1705         int i;
1706
1707         vports = lpfc_create_vport_work_array(phba);
1708         if (vports) {
1709                 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
1710                         shost = lpfc_shost_from_vport(vports[i]);
1711                         scsi_unblock_requests(shost);
1712                 }
1713                 lpfc_destroy_vport_work_array(phba, vports);
1714         } else {
1715                 shost = lpfc_shost_from_vport(phba->pport);
1716                 scsi_unblock_requests(shost);
1717         }
1718         return;
1719 }
1720
1721 /**
1722  * lpfc_sli3_bsg_diag_loopback_mode - process an sli3 bsg vendor command
1723  * @phba: Pointer to HBA context object.
1724  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1725  *
1726  * This function is responsible for placing an sli3  port into diagnostic
1727  * loopback mode in order to perform a diagnostic loopback test.
1728  * All new scsi requests are blocked, a small delay is used to allow the
1729  * scsi requests to complete then the link is brought down. If the link is
1730  * is placed in loopback mode then scsi requests are again allowed
1731  * so the scsi mid-layer doesn't give up on the port.
1732  * All of this is done in-line.
1733  */
1734 static int
1735 lpfc_sli3_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
1736 {
1737         struct fc_bsg_request *bsg_request = job->request;
1738         struct fc_bsg_reply *bsg_reply = job->reply;
1739         struct diag_mode_set *loopback_mode;
1740         uint32_t link_flags;
1741         uint32_t timeout;
1742         LPFC_MBOXQ_t *pmboxq  = NULL;
1743         int mbxstatus = MBX_SUCCESS;
1744         int i = 0;
1745         int rc = 0;
1746
1747         /* no data to return just the return code */
1748         bsg_reply->reply_payload_rcv_len = 0;
1749
1750         if (job->request_len < sizeof(struct fc_bsg_request) +
1751             sizeof(struct diag_mode_set)) {
1752                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1753                                 "2738 Received DIAG MODE request size:%d "
1754                                 "below the minimum size:%d\n",
1755                                 job->request_len,
1756                                 (int)(sizeof(struct fc_bsg_request) +
1757                                 sizeof(struct diag_mode_set)));
1758                 rc = -EINVAL;
1759                 goto job_error;
1760         }
1761
1762         rc = lpfc_bsg_diag_mode_enter(phba);
1763         if (rc)
1764                 goto job_error;
1765
1766         /* bring the link to diagnostic mode */
1767         loopback_mode = (struct diag_mode_set *)
1768                 bsg_request->rqst_data.h_vendor.vendor_cmd;
1769         link_flags = loopback_mode->type;
1770         timeout = loopback_mode->timeout * 100;
1771
1772         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1773         if (!pmboxq) {
1774                 rc = -ENOMEM;
1775                 goto loopback_mode_exit;
1776         }
1777         memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1778         pmboxq->u.mb.mbxCommand = MBX_DOWN_LINK;
1779         pmboxq->u.mb.mbxOwner = OWN_HOST;
1780
1781         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1782
1783         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0)) {
1784                 /* wait for link down before proceeding */
1785                 i = 0;
1786                 while (phba->link_state != LPFC_LINK_DOWN) {
1787                         if (i++ > timeout) {
1788                                 rc = -ETIMEDOUT;
1789                                 goto loopback_mode_exit;
1790                         }
1791                         msleep(10);
1792                 }
1793
1794                 memset((void *)pmboxq, 0, sizeof(LPFC_MBOXQ_t));
1795                 if (link_flags == INTERNAL_LOOP_BACK)
1796                         pmboxq->u.mb.un.varInitLnk.link_flags = FLAGS_LOCAL_LB;
1797                 else
1798                         pmboxq->u.mb.un.varInitLnk.link_flags =
1799                                 FLAGS_TOPOLOGY_MODE_LOOP;
1800
1801                 pmboxq->u.mb.mbxCommand = MBX_INIT_LINK;
1802                 pmboxq->u.mb.mbxOwner = OWN_HOST;
1803
1804                 mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq,
1805                                                      LPFC_MBOX_TMO);
1806
1807                 if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus))
1808                         rc = -ENODEV;
1809                 else {
1810                         spin_lock_irq(&phba->hbalock);
1811                         phba->link_flag |= LS_LOOPBACK_MODE;
1812                         spin_unlock_irq(&phba->hbalock);
1813                         /* wait for the link attention interrupt */
1814                         msleep(100);
1815
1816                         i = 0;
1817                         while (phba->link_state != LPFC_HBA_READY) {
1818                                 if (i++ > timeout) {
1819                                         rc = -ETIMEDOUT;
1820                                         break;
1821                                 }
1822
1823                                 msleep(10);
1824                         }
1825                 }
1826
1827         } else
1828                 rc = -ENODEV;
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         bsg_reply->result = rc;
1842         /* complete the job back to userspace if no error */
1843         if (rc == 0)
1844                 bsg_job_done(job, bsg_reply->result,
1845                                bsg_reply->reply_payload_rcv_len);
1846         return rc;
1847 }
1848
1849 /**
1850  * lpfc_sli4_bsg_set_link_diag_state - set sli4 link diag state
1851  * @phba: Pointer to HBA context object.
1852  * @diag: Flag for set link to diag or nomral operation state.
1853  *
1854  * This function is responsible for issuing a sli4 mailbox command for setting
1855  * link to either diag state or normal operation state.
1856  */
1857 static int
1858 lpfc_sli4_bsg_set_link_diag_state(struct lpfc_hba *phba, uint32_t diag)
1859 {
1860         LPFC_MBOXQ_t *pmboxq;
1861         struct lpfc_mbx_set_link_diag_state *link_diag_state;
1862         uint32_t req_len, alloc_len;
1863         int mbxstatus = MBX_SUCCESS, rc;
1864
1865         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1866         if (!pmboxq)
1867                 return -ENOMEM;
1868
1869         req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
1870                    sizeof(struct lpfc_sli4_cfg_mhdr));
1871         alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1872                                 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
1873                                 req_len, LPFC_SLI4_MBX_EMBED);
1874         if (alloc_len != req_len) {
1875                 rc = -ENOMEM;
1876                 goto link_diag_state_set_out;
1877         }
1878         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
1879                         "3128 Set link to diagnostic state:x%x (x%x/x%x)\n",
1880                         diag, phba->sli4_hba.lnk_info.lnk_tp,
1881                         phba->sli4_hba.lnk_info.lnk_no);
1882
1883         link_diag_state = &pmboxq->u.mqe.un.link_diag_state;
1884         bf_set(lpfc_mbx_set_diag_state_diag_bit_valid, &link_diag_state->u.req,
1885                LPFC_DIAG_STATE_DIAG_BIT_VALID_CHANGE);
1886         bf_set(lpfc_mbx_set_diag_state_link_num, &link_diag_state->u.req,
1887                phba->sli4_hba.lnk_info.lnk_no);
1888         bf_set(lpfc_mbx_set_diag_state_link_type, &link_diag_state->u.req,
1889                phba->sli4_hba.lnk_info.lnk_tp);
1890         if (diag)
1891                 bf_set(lpfc_mbx_set_diag_state_diag,
1892                        &link_diag_state->u.req, 1);
1893         else
1894                 bf_set(lpfc_mbx_set_diag_state_diag,
1895                        &link_diag_state->u.req, 0);
1896
1897         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1898
1899         if ((mbxstatus == MBX_SUCCESS) && (pmboxq->u.mb.mbxStatus == 0))
1900                 rc = 0;
1901         else
1902                 rc = -ENODEV;
1903
1904 link_diag_state_set_out:
1905         if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1906                 mempool_free(pmboxq, phba->mbox_mem_pool);
1907
1908         return rc;
1909 }
1910
1911 /**
1912  * lpfc_sli4_bsg_set_loopback_mode - set sli4 internal loopback diagnostic
1913  * @phba: Pointer to HBA context object.
1914  * @mode: loopback mode to set
1915  * @link_no: link number for loopback mode to set
1916  *
1917  * This function is responsible for issuing a sli4 mailbox command for setting
1918  * up loopback diagnostic for a link.
1919  */
1920 static int
1921 lpfc_sli4_bsg_set_loopback_mode(struct lpfc_hba *phba, int mode,
1922                                 uint32_t link_no)
1923 {
1924         LPFC_MBOXQ_t *pmboxq;
1925         uint32_t req_len, alloc_len;
1926         struct lpfc_mbx_set_link_diag_loopback *link_diag_loopback;
1927         int mbxstatus = MBX_SUCCESS, rc = 0;
1928
1929         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1930         if (!pmboxq)
1931                 return -ENOMEM;
1932         req_len = (sizeof(struct lpfc_mbx_set_link_diag_loopback) -
1933                    sizeof(struct lpfc_sli4_cfg_mhdr));
1934         alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
1935                                 LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_LOOPBACK,
1936                                 req_len, LPFC_SLI4_MBX_EMBED);
1937         if (alloc_len != req_len) {
1938                 mempool_free(pmboxq, phba->mbox_mem_pool);
1939                 return -ENOMEM;
1940         }
1941         link_diag_loopback = &pmboxq->u.mqe.un.link_diag_loopback;
1942         bf_set(lpfc_mbx_set_diag_state_link_num,
1943                &link_diag_loopback->u.req, link_no);
1944
1945         if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
1946                 bf_set(lpfc_mbx_set_diag_state_link_type,
1947                        &link_diag_loopback->u.req, LPFC_LNK_FC_TRUNKED);
1948         } else {
1949                 bf_set(lpfc_mbx_set_diag_state_link_type,
1950                        &link_diag_loopback->u.req,
1951                        phba->sli4_hba.lnk_info.lnk_tp);
1952         }
1953
1954         bf_set(lpfc_mbx_set_diag_lpbk_type, &link_diag_loopback->u.req,
1955                mode);
1956
1957         mbxstatus = lpfc_sli_issue_mbox_wait(phba, pmboxq, LPFC_MBOX_TMO);
1958         if ((mbxstatus != MBX_SUCCESS) || (pmboxq->u.mb.mbxStatus)) {
1959                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1960                                 "3127 Failed setup loopback mode mailbox "
1961                                 "command, rc:x%x, status:x%x\n", mbxstatus,
1962                                 pmboxq->u.mb.mbxStatus);
1963                 rc = -ENODEV;
1964         }
1965         if (pmboxq && (mbxstatus != MBX_TIMEOUT))
1966                 mempool_free(pmboxq, phba->mbox_mem_pool);
1967         return rc;
1968 }
1969
1970 /**
1971  * lpfc_sli4_diag_fcport_reg_setup - setup port registrations for diagnostic
1972  * @phba: Pointer to HBA context object.
1973  *
1974  * This function set up SLI4 FC port registrations for diagnostic run, which
1975  * includes all the rpis, vfi, and also vpi.
1976  */
1977 static int
1978 lpfc_sli4_diag_fcport_reg_setup(struct lpfc_hba *phba)
1979 {
1980         if (test_bit(FC_VFI_REGISTERED, &phba->pport->fc_flag)) {
1981                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
1982                                 "3136 Port still had vfi registered: "
1983                                 "mydid:x%x, fcfi:%d, vfi:%d, vpi:%d\n",
1984                                 phba->pport->fc_myDID, phba->fcf.fcfi,
1985                                 phba->sli4_hba.vfi_ids[phba->pport->vfi],
1986                                 phba->vpi_ids[phba->pport->vpi]);
1987                 return -EINVAL;
1988         }
1989         return lpfc_issue_reg_vfi(phba->pport);
1990 }
1991
1992 /**
1993  * lpfc_sli4_bsg_diag_loopback_mode - process an sli4 bsg vendor command
1994  * @phba: Pointer to HBA context object.
1995  * @job: LPFC_BSG_VENDOR_DIAG_MODE
1996  *
1997  * This function is responsible for placing an sli4 port into diagnostic
1998  * loopback mode in order to perform a diagnostic loopback test.
1999  */
2000 static int
2001 lpfc_sli4_bsg_diag_loopback_mode(struct lpfc_hba *phba, struct bsg_job *job)
2002 {
2003         struct fc_bsg_request *bsg_request = job->request;
2004         struct fc_bsg_reply *bsg_reply = job->reply;
2005         struct diag_mode_set *loopback_mode;
2006         uint32_t link_flags, timeout, link_no;
2007         int i, rc = 0;
2008
2009         /* no data to return just the return code */
2010         bsg_reply->reply_payload_rcv_len = 0;
2011
2012         if (job->request_len < sizeof(struct fc_bsg_request) +
2013             sizeof(struct diag_mode_set)) {
2014                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2015                                 "3011 Received DIAG MODE request size:%d "
2016                                 "below the minimum size:%d\n",
2017                                 job->request_len,
2018                                 (int)(sizeof(struct fc_bsg_request) +
2019                                 sizeof(struct diag_mode_set)));
2020                 rc = -EINVAL;
2021                 goto job_done;
2022         }
2023
2024         loopback_mode = (struct diag_mode_set *)
2025                 bsg_request->rqst_data.h_vendor.vendor_cmd;
2026         link_flags = loopback_mode->type;
2027         timeout = loopback_mode->timeout * 100;
2028
2029         if (loopback_mode->physical_link == -1)
2030                 link_no = phba->sli4_hba.lnk_info.lnk_no;
2031         else
2032                 link_no = loopback_mode->physical_link;
2033
2034         if (link_flags == DISABLE_LOOP_BACK) {
2035                 rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2036                                         LPFC_DIAG_LOOPBACK_TYPE_DISABLE,
2037                                         link_no);
2038                 if (!rc) {
2039                         /* Unset the need disable bit */
2040                         phba->sli4_hba.conf_trunk &= ~((1 << link_no) << 4);
2041                 }
2042                 goto job_done;
2043         } else {
2044                 /* Check if we need to disable the loopback state */
2045                 if (phba->sli4_hba.conf_trunk & ((1 << link_no) << 4)) {
2046                         rc = -EPERM;
2047                         goto job_done;
2048                 }
2049         }
2050
2051         rc = lpfc_bsg_diag_mode_enter(phba);
2052         if (rc)
2053                 goto job_done;
2054
2055         /* indicate we are in loobpack diagnostic mode */
2056         spin_lock_irq(&phba->hbalock);
2057         phba->link_flag |= LS_LOOPBACK_MODE;
2058         spin_unlock_irq(&phba->hbalock);
2059
2060         /* reset port to start frome scratch */
2061         rc = lpfc_selective_reset(phba);
2062         if (rc)
2063                 goto job_done;
2064
2065         /* bring the link to diagnostic mode */
2066         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2067                         "3129 Bring link to diagnostic state.\n");
2068
2069         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2070         if (rc) {
2071                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2072                                 "3130 Failed to bring link to diagnostic "
2073                                 "state, rc:x%x\n", rc);
2074                 goto loopback_mode_exit;
2075         }
2076
2077         /* wait for link down before proceeding */
2078         i = 0;
2079         while (phba->link_state != LPFC_LINK_DOWN) {
2080                 if (i++ > timeout) {
2081                         rc = -ETIMEDOUT;
2082                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2083                                         "3131 Timeout waiting for link to "
2084                                         "diagnostic mode, timeout:%d ms\n",
2085                                         timeout * 10);
2086                         goto loopback_mode_exit;
2087                 }
2088                 msleep(10);
2089         }
2090
2091         /* set up loopback mode */
2092         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2093                         "3132 Set up loopback mode:x%x\n", link_flags);
2094
2095         switch (link_flags) {
2096         case INTERNAL_LOOP_BACK:
2097                 if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
2098                         rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2099                                         LPFC_DIAG_LOOPBACK_TYPE_INTERNAL,
2100                                         link_no);
2101                 } else {
2102                         /* Trunk is configured, but link is not in this trunk */
2103                         if (phba->sli4_hba.conf_trunk) {
2104                                 rc = -ELNRNG;
2105                                 goto loopback_mode_exit;
2106                         }
2107
2108                         rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2109                                         LPFC_DIAG_LOOPBACK_TYPE_INTERNAL,
2110                                         link_no);
2111                 }
2112
2113                 if (!rc) {
2114                         /* Set the need disable bit */
2115                         phba->sli4_hba.conf_trunk |= (1 << link_no) << 4;
2116                 }
2117
2118                 break;
2119         case EXTERNAL_LOOP_BACK:
2120                 if (phba->sli4_hba.conf_trunk & (1 << link_no)) {
2121                         rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2122                                 LPFC_DIAG_LOOPBACK_TYPE_EXTERNAL_TRUNKED,
2123                                 link_no);
2124                 } else {
2125                         /* Trunk is configured, but link is not in this trunk */
2126                         if (phba->sli4_hba.conf_trunk) {
2127                                 rc = -ELNRNG;
2128                                 goto loopback_mode_exit;
2129                         }
2130
2131                         rc = lpfc_sli4_bsg_set_loopback_mode(phba,
2132                                                 LPFC_DIAG_LOOPBACK_TYPE_SERDES,
2133                                                 link_no);
2134                 }
2135
2136                 if (!rc) {
2137                         /* Set the need disable bit */
2138                         phba->sli4_hba.conf_trunk |= (1 << link_no) << 4;
2139                 }
2140
2141                 break;
2142         default:
2143                 rc = -EINVAL;
2144                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2145                                 "3141 Loopback mode:x%x not supported\n",
2146                                 link_flags);
2147                 goto loopback_mode_exit;
2148         }
2149
2150         if (!rc) {
2151                 /* wait for the link attention interrupt */
2152                 msleep(100);
2153                 i = 0;
2154                 while (phba->link_state < LPFC_LINK_UP) {
2155                         if (i++ > timeout) {
2156                                 rc = -ETIMEDOUT;
2157                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2158                                         "3137 Timeout waiting for link up "
2159                                         "in loopback mode, timeout:%d ms\n",
2160                                         timeout * 10);
2161                                 break;
2162                         }
2163                         msleep(10);
2164                 }
2165         }
2166
2167         /* port resource registration setup for loopback diagnostic */
2168         if (!rc) {
2169                 /* set up a none zero myDID for loopback test */
2170                 phba->pport->fc_myDID = 1;
2171                 rc = lpfc_sli4_diag_fcport_reg_setup(phba);
2172         } else
2173                 goto loopback_mode_exit;
2174
2175         if (!rc) {
2176                 /* wait for the port ready */
2177                 msleep(100);
2178                 i = 0;
2179                 while (phba->link_state != LPFC_HBA_READY) {
2180                         if (i++ > timeout) {
2181                                 rc = -ETIMEDOUT;
2182                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2183                                         "3133 Timeout waiting for port "
2184                                         "loopback mode ready, timeout:%d ms\n",
2185                                         timeout * 10);
2186                                 break;
2187                         }
2188                         msleep(10);
2189                 }
2190         }
2191
2192 loopback_mode_exit:
2193         /* clear loopback diagnostic mode */
2194         if (rc) {
2195                 spin_lock_irq(&phba->hbalock);
2196                 phba->link_flag &= ~LS_LOOPBACK_MODE;
2197                 spin_unlock_irq(&phba->hbalock);
2198         }
2199         lpfc_bsg_diag_mode_exit(phba);
2200
2201 job_done:
2202         /* make error code available to userspace */
2203         bsg_reply->result = rc;
2204         /* complete the job back to userspace if no error */
2205         if (rc == 0)
2206                 bsg_job_done(job, bsg_reply->result,
2207                                bsg_reply->reply_payload_rcv_len);
2208         return rc;
2209 }
2210
2211 /**
2212  * lpfc_bsg_diag_loopback_mode - bsg vendor command for diag loopback mode
2213  * @job: LPFC_BSG_VENDOR_DIAG_MODE
2214  *
2215  * This function is responsible for responding to check and dispatch bsg diag
2216  * command from the user to proper driver action routines.
2217  */
2218 static int
2219 lpfc_bsg_diag_loopback_mode(struct bsg_job *job)
2220 {
2221         struct Scsi_Host *shost;
2222         struct lpfc_vport *vport;
2223         struct lpfc_hba *phba;
2224         int rc;
2225
2226         shost = fc_bsg_to_shost(job);
2227         if (!shost)
2228                 return -ENODEV;
2229         vport = shost_priv(shost);
2230         if (!vport)
2231                 return -ENODEV;
2232         phba = vport->phba;
2233         if (!phba)
2234                 return -ENODEV;
2235
2236         if (phba->sli_rev < LPFC_SLI_REV4)
2237                 rc = lpfc_sli3_bsg_diag_loopback_mode(phba, job);
2238         else if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) >=
2239                  LPFC_SLI_INTF_IF_TYPE_2)
2240                 rc = lpfc_sli4_bsg_diag_loopback_mode(phba, job);
2241         else
2242                 rc = -ENODEV;
2243
2244         return rc;
2245 }
2246
2247 /**
2248  * lpfc_sli4_bsg_diag_mode_end - sli4 bsg vendor command for ending diag mode
2249  * @job: LPFC_BSG_VENDOR_DIAG_MODE_END
2250  *
2251  * This function is responsible for responding to check and dispatch bsg diag
2252  * command from the user to proper driver action routines.
2253  */
2254 static int
2255 lpfc_sli4_bsg_diag_mode_end(struct bsg_job *job)
2256 {
2257         struct fc_bsg_request *bsg_request = job->request;
2258         struct fc_bsg_reply *bsg_reply = job->reply;
2259         struct Scsi_Host *shost;
2260         struct lpfc_vport *vport;
2261         struct lpfc_hba *phba;
2262         struct diag_mode_set *loopback_mode_end_cmd;
2263         uint32_t timeout;
2264         int rc, i;
2265
2266         shost = fc_bsg_to_shost(job);
2267         if (!shost)
2268                 return -ENODEV;
2269         vport = shost_priv(shost);
2270         if (!vport)
2271                 return -ENODEV;
2272         phba = vport->phba;
2273         if (!phba)
2274                 return -ENODEV;
2275
2276         if (phba->sli_rev < LPFC_SLI_REV4)
2277                 return -ENODEV;
2278         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
2279             LPFC_SLI_INTF_IF_TYPE_2)
2280                 return -ENODEV;
2281
2282         /* clear loopback diagnostic mode */
2283         spin_lock_irq(&phba->hbalock);
2284         phba->link_flag &= ~LS_LOOPBACK_MODE;
2285         spin_unlock_irq(&phba->hbalock);
2286         loopback_mode_end_cmd = (struct diag_mode_set *)
2287                         bsg_request->rqst_data.h_vendor.vendor_cmd;
2288         timeout = loopback_mode_end_cmd->timeout * 100;
2289
2290         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2291         if (rc) {
2292                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2293                                 "3139 Failed to bring link to diagnostic "
2294                                 "state, rc:x%x\n", rc);
2295                 goto loopback_mode_end_exit;
2296         }
2297
2298         /* wait for link down before proceeding */
2299         i = 0;
2300         while (phba->link_state != LPFC_LINK_DOWN) {
2301                 if (i++ > timeout) {
2302                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
2303                                         "3140 Timeout waiting for link to "
2304                                         "diagnostic mode_end, timeout:%d ms\n",
2305                                         timeout * 10);
2306                         /* there is nothing much we can do here */
2307                         break;
2308                 }
2309                 msleep(10);
2310         }
2311
2312         /* reset port resource registrations */
2313         rc = lpfc_selective_reset(phba);
2314         phba->pport->fc_myDID = 0;
2315
2316 loopback_mode_end_exit:
2317         /* make return code available to userspace */
2318         bsg_reply->result = rc;
2319         /* complete the job back to userspace if no error */
2320         if (rc == 0)
2321                 bsg_job_done(job, bsg_reply->result,
2322                                bsg_reply->reply_payload_rcv_len);
2323         return rc;
2324 }
2325
2326 /**
2327  * lpfc_sli4_bsg_link_diag_test - sli4 bsg vendor command for diag link test
2328  * @job: LPFC_BSG_VENDOR_DIAG_LINK_TEST
2329  *
2330  * This function is to perform SLI4 diag link test request from the user
2331  * applicaiton.
2332  */
2333 static int
2334 lpfc_sli4_bsg_link_diag_test(struct bsg_job *job)
2335 {
2336         struct fc_bsg_request *bsg_request = job->request;
2337         struct fc_bsg_reply *bsg_reply = job->reply;
2338         struct Scsi_Host *shost;
2339         struct lpfc_vport *vport;
2340         struct lpfc_hba *phba;
2341         LPFC_MBOXQ_t *pmboxq;
2342         struct sli4_link_diag *link_diag_test_cmd;
2343         uint32_t req_len, alloc_len;
2344         struct lpfc_mbx_run_link_diag_test *run_link_diag_test;
2345         union lpfc_sli4_cfg_shdr *shdr;
2346         uint32_t shdr_status, shdr_add_status;
2347         struct diag_status *diag_status_reply;
2348         int mbxstatus, rc = -ENODEV, rc1 = 0;
2349
2350         shost = fc_bsg_to_shost(job);
2351         if (!shost)
2352                 goto job_error;
2353
2354         vport = shost_priv(shost);
2355         if (!vport)
2356                 goto job_error;
2357
2358         phba = vport->phba;
2359         if (!phba)
2360                 goto job_error;
2361
2362
2363         if (phba->sli_rev < LPFC_SLI_REV4)
2364                 goto job_error;
2365
2366         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
2367             LPFC_SLI_INTF_IF_TYPE_2)
2368                 goto job_error;
2369
2370         if (job->request_len < sizeof(struct fc_bsg_request) +
2371             sizeof(struct sli4_link_diag)) {
2372                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2373                                 "3013 Received LINK DIAG TEST request "
2374                                 " size:%d below the minimum size:%d\n",
2375                                 job->request_len,
2376                                 (int)(sizeof(struct fc_bsg_request) +
2377                                 sizeof(struct sli4_link_diag)));
2378                 rc = -EINVAL;
2379                 goto job_error;
2380         }
2381
2382         rc = lpfc_bsg_diag_mode_enter(phba);
2383         if (rc)
2384                 goto job_error;
2385
2386         link_diag_test_cmd = (struct sli4_link_diag *)
2387                          bsg_request->rqst_data.h_vendor.vendor_cmd;
2388
2389         rc = lpfc_sli4_bsg_set_link_diag_state(phba, 1);
2390
2391         if (rc)
2392                 goto job_error;
2393
2394         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2395         if (!pmboxq) {
2396                 rc = -ENOMEM;
2397                 goto link_diag_test_exit;
2398         }
2399
2400         req_len = (sizeof(struct lpfc_mbx_set_link_diag_state) -
2401                    sizeof(struct lpfc_sli4_cfg_mhdr));
2402         alloc_len = lpfc_sli4_config(phba, pmboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
2403                                      LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE,
2404                                      req_len, LPFC_SLI4_MBX_EMBED);
2405         if (alloc_len != req_len) {
2406                 rc = -ENOMEM;
2407                 goto link_diag_test_exit;
2408         }
2409
2410         run_link_diag_test = &pmboxq->u.mqe.un.link_diag_test;
2411         bf_set(lpfc_mbx_run_diag_test_link_num, &run_link_diag_test->u.req,
2412                phba->sli4_hba.lnk_info.lnk_no);
2413         bf_set(lpfc_mbx_run_diag_test_link_type, &run_link_diag_test->u.req,
2414                phba->sli4_hba.lnk_info.lnk_tp);
2415         bf_set(lpfc_mbx_run_diag_test_test_id, &run_link_diag_test->u.req,
2416                link_diag_test_cmd->test_id);
2417         bf_set(lpfc_mbx_run_diag_test_loops, &run_link_diag_test->u.req,
2418                link_diag_test_cmd->loops);
2419         bf_set(lpfc_mbx_run_diag_test_test_ver, &run_link_diag_test->u.req,
2420                link_diag_test_cmd->test_version);
2421         bf_set(lpfc_mbx_run_diag_test_err_act, &run_link_diag_test->u.req,
2422                link_diag_test_cmd->error_action);
2423
2424         mbxstatus = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
2425
2426         shdr = (union lpfc_sli4_cfg_shdr *)
2427                 &pmboxq->u.mqe.un.sli4_config.header.cfg_shdr;
2428         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
2429         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
2430         if (shdr_status || shdr_add_status || mbxstatus) {
2431                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
2432                                 "3010 Run link diag test mailbox failed with "
2433                                 "mbx_status x%x status x%x, add_status x%x\n",
2434                                 mbxstatus, shdr_status, shdr_add_status);
2435         }
2436
2437         diag_status_reply = (struct diag_status *)
2438                             bsg_reply->reply_data.vendor_reply.vendor_rsp;
2439
2440         if (job->reply_len < sizeof(*bsg_reply) + sizeof(*diag_status_reply)) {
2441                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
2442                                 "3012 Received Run link diag test reply "
2443                                 "below minimum size (%d): reply_len:%d\n",
2444                                 (int)(sizeof(*bsg_reply) +
2445                                 sizeof(*diag_status_reply)),
2446                                 job->reply_len);
2447                 rc = -EINVAL;
2448                 goto job_error;
2449         }
2450
2451         diag_status_reply->mbox_status = mbxstatus;
2452         diag_status_reply->shdr_status = shdr_status;
2453         diag_status_reply->shdr_add_status = shdr_add_status;
2454
2455 link_diag_test_exit:
2456         rc1 = lpfc_sli4_bsg_set_link_diag_state(phba, 0);
2457
2458         if (pmboxq)
2459                 mempool_free(pmboxq, phba->mbox_mem_pool);
2460
2461         lpfc_bsg_diag_mode_exit(phba);
2462
2463 job_error:
2464         /* make error code available to userspace */
2465         if (rc1 && !rc)
2466                 rc = rc1;
2467         bsg_reply->result = rc;
2468         /* complete the job back to userspace if no error */
2469         if (rc == 0)
2470                 bsg_job_done(job, bsg_reply->result,
2471                                bsg_reply->reply_payload_rcv_len);
2472         return rc;
2473 }
2474
2475 /**
2476  * lpfcdiag_loop_self_reg - obtains a remote port login id
2477  * @phba: Pointer to HBA context object
2478  * @rpi: Pointer to a remote port login id
2479  *
2480  * This function obtains a remote port login id so the diag loopback test
2481  * can send and receive its own unsolicited CT command.
2482  **/
2483 static int lpfcdiag_loop_self_reg(struct lpfc_hba *phba, uint16_t *rpi)
2484 {
2485         LPFC_MBOXQ_t *mbox;
2486         struct lpfc_dmabuf *dmabuff;
2487         int status;
2488
2489         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2490         if (!mbox)
2491                 return -ENOMEM;
2492
2493         if (phba->sli_rev < LPFC_SLI_REV4)
2494                 status = lpfc_reg_rpi(phba, 0, phba->pport->fc_myDID,
2495                                 (uint8_t *)&phba->pport->fc_sparam,
2496                                 mbox, *rpi);
2497         else {
2498                 *rpi = lpfc_sli4_alloc_rpi(phba);
2499                 if (*rpi == LPFC_RPI_ALLOC_ERROR) {
2500                         mempool_free(mbox, phba->mbox_mem_pool);
2501                         return -EBUSY;
2502                 }
2503                 status = lpfc_reg_rpi(phba, phba->pport->vpi,
2504                                 phba->pport->fc_myDID,
2505                                 (uint8_t *)&phba->pport->fc_sparam,
2506                                 mbox, *rpi);
2507         }
2508
2509         if (status) {
2510                 mempool_free(mbox, phba->mbox_mem_pool);
2511                 if (phba->sli_rev == LPFC_SLI_REV4)
2512                         lpfc_sli4_free_rpi(phba, *rpi);
2513                 return -ENOMEM;
2514         }
2515
2516         dmabuff = (struct lpfc_dmabuf *)mbox->ctx_buf;
2517         mbox->ctx_buf = NULL;
2518         mbox->ctx_ndlp = NULL;
2519         status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2520
2521         if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2522                 lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2523                 kfree(dmabuff);
2524                 if (status != MBX_TIMEOUT)
2525                         mempool_free(mbox, phba->mbox_mem_pool);
2526                 if (phba->sli_rev == LPFC_SLI_REV4)
2527                         lpfc_sli4_free_rpi(phba, *rpi);
2528                 return -ENODEV;
2529         }
2530
2531         if (phba->sli_rev < LPFC_SLI_REV4)
2532                 *rpi = mbox->u.mb.un.varWords[0];
2533
2534         lpfc_mbuf_free(phba, dmabuff->virt, dmabuff->phys);
2535         kfree(dmabuff);
2536         mempool_free(mbox, phba->mbox_mem_pool);
2537         return 0;
2538 }
2539
2540 /**
2541  * lpfcdiag_loop_self_unreg - unregs from the rpi
2542  * @phba: Pointer to HBA context object
2543  * @rpi: Remote port login id
2544  *
2545  * This function unregisters the rpi obtained in lpfcdiag_loop_self_reg
2546  **/
2547 static int lpfcdiag_loop_self_unreg(struct lpfc_hba *phba, uint16_t rpi)
2548 {
2549         LPFC_MBOXQ_t *mbox;
2550         int status;
2551
2552         /* Allocate mboxq structure */
2553         mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
2554         if (mbox == NULL)
2555                 return -ENOMEM;
2556
2557         if (phba->sli_rev < LPFC_SLI_REV4)
2558                 lpfc_unreg_login(phba, 0, rpi, mbox);
2559         else
2560                 lpfc_unreg_login(phba, phba->pport->vpi,
2561                                  phba->sli4_hba.rpi_ids[rpi], mbox);
2562
2563         status = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
2564
2565         if ((status != MBX_SUCCESS) || (mbox->u.mb.mbxStatus)) {
2566                 if (status != MBX_TIMEOUT)
2567                         mempool_free(mbox, phba->mbox_mem_pool);
2568                 return -EIO;
2569         }
2570         mempool_free(mbox, phba->mbox_mem_pool);
2571         if (phba->sli_rev == LPFC_SLI_REV4)
2572                 lpfc_sli4_free_rpi(phba, rpi);
2573         return 0;
2574 }
2575
2576 /**
2577  * lpfcdiag_loop_get_xri - obtains the transmit and receive ids
2578  * @phba: Pointer to HBA context object
2579  * @rpi: Remote port login id
2580  * @txxri: Pointer to transmit exchange id
2581  * @rxxri: Pointer to response exchabge id
2582  *
2583  * This function obtains the transmit and receive ids required to send
2584  * an unsolicited ct command with a payload. A special lpfc FsType and CmdRsp
2585  * flags are used to the unsolicited response handler is able to process
2586  * the ct command sent on the same port.
2587  **/
2588 static int lpfcdiag_loop_get_xri(struct lpfc_hba *phba, uint16_t rpi,
2589                          uint16_t *txxri, uint16_t * rxxri)
2590 {
2591         struct lpfc_bsg_event *evt;
2592         struct lpfc_iocbq *cmdiocbq, *rspiocbq;
2593         struct lpfc_dmabuf *dmabuf;
2594         struct ulp_bde64 *bpl = NULL;
2595         struct lpfc_sli_ct_request *ctreq = NULL;
2596         int ret_val = 0;
2597         int time_left;
2598         int iocb_stat = IOCB_SUCCESS;
2599         unsigned long flags;
2600         u32 status;
2601
2602         *txxri = 0;
2603         *rxxri = 0;
2604         evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
2605                                 SLI_CT_ELX_LOOPBACK);
2606         if (!evt)
2607                 return -ENOMEM;
2608
2609         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2610         list_add(&evt->node, &phba->ct_ev_waiters);
2611         lpfc_bsg_event_ref(evt);
2612         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2613
2614         cmdiocbq = lpfc_sli_get_iocbq(phba);
2615         rspiocbq = lpfc_sli_get_iocbq(phba);
2616
2617         dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2618         if (dmabuf) {
2619                 dmabuf->virt = lpfc_mbuf_alloc(phba, 0, &dmabuf->phys);
2620                 if (dmabuf->virt) {
2621                         INIT_LIST_HEAD(&dmabuf->list);
2622                         bpl = (struct ulp_bde64 *) dmabuf->virt;
2623                         memset(bpl, 0, sizeof(*bpl));
2624                         ctreq = (struct lpfc_sli_ct_request *)(bpl + 1);
2625                         bpl->addrHigh =
2626                                 le32_to_cpu(putPaddrHigh(dmabuf->phys +
2627                                         sizeof(*bpl)));
2628                         bpl->addrLow =
2629                                 le32_to_cpu(putPaddrLow(dmabuf->phys +
2630                                         sizeof(*bpl)));
2631                         bpl->tus.f.bdeFlags = 0;
2632                         bpl->tus.f.bdeSize = ELX_LOOPBACK_HEADER_SZ;
2633                         bpl->tus.w = le32_to_cpu(bpl->tus.w);
2634                 }
2635         }
2636
2637         if (cmdiocbq == NULL || rspiocbq == NULL ||
2638             dmabuf == NULL || bpl == NULL || ctreq == NULL ||
2639                 dmabuf->virt == NULL) {
2640                 ret_val = -ENOMEM;
2641                 goto err_get_xri_exit;
2642         }
2643
2644         memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
2645
2646         ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
2647         ctreq->RevisionId.bits.InId = 0;
2648         ctreq->FsType = SLI_CT_ELX_LOOPBACK;
2649         ctreq->FsSubType = 0;
2650         ctreq->CommandResponse.bits.CmdRsp = ELX_LOOPBACK_XRI_SETUP;
2651         ctreq->CommandResponse.bits.Size = 0;
2652
2653         cmdiocbq->bpl_dmabuf = dmabuf;
2654         cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC;
2655         cmdiocbq->vport = phba->pport;
2656         cmdiocbq->cmd_cmpl = NULL;
2657
2658         lpfc_sli_prep_xmit_seq64(phba, cmdiocbq, dmabuf, rpi, 0, 1,
2659                                  FC_RCTL_DD_SOL_CTL, 0, CMD_XMIT_SEQUENCE64_CR);
2660
2661         iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
2662                                              rspiocbq, (phba->fc_ratov * 2)
2663                                              + LPFC_DRVR_TIMEOUT);
2664
2665         status = get_job_ulpstatus(phba, rspiocbq);
2666         if (iocb_stat != IOCB_SUCCESS || status != IOCB_SUCCESS) {
2667                 ret_val = -EIO;
2668                 goto err_get_xri_exit;
2669         }
2670         *txxri = get_job_ulpcontext(phba, rspiocbq);
2671
2672         evt->waiting = 1;
2673         evt->wait_time_stamp = jiffies;
2674         time_left = wait_event_interruptible_timeout(
2675                 evt->wq, !list_empty(&evt->events_to_see),
2676                 msecs_to_jiffies(1000 *
2677                         ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
2678         if (list_empty(&evt->events_to_see))
2679                 ret_val = (time_left) ? -EINTR : -ETIMEDOUT;
2680         else {
2681                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
2682                 list_move(evt->events_to_see.prev, &evt->events_to_get);
2683                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2684                 *rxxri = (list_entry(evt->events_to_get.prev,
2685                                      typeof(struct event_data),
2686                                      node))->immed_dat;
2687         }
2688         evt->waiting = 0;
2689
2690 err_get_xri_exit:
2691         spin_lock_irqsave(&phba->ct_ev_lock, flags);
2692         lpfc_bsg_event_unref(evt); /* release ref */
2693         lpfc_bsg_event_unref(evt); /* delete */
2694         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
2695
2696         if (dmabuf) {
2697                 if (dmabuf->virt)
2698                         lpfc_mbuf_free(phba, dmabuf->virt, dmabuf->phys);
2699                 kfree(dmabuf);
2700         }
2701
2702         if (cmdiocbq && (iocb_stat != IOCB_TIMEDOUT))
2703                 lpfc_sli_release_iocbq(phba, cmdiocbq);
2704         if (rspiocbq)
2705                 lpfc_sli_release_iocbq(phba, rspiocbq);
2706         return ret_val;
2707 }
2708
2709 /**
2710  * lpfc_bsg_dma_page_alloc - allocate a bsg mbox page sized dma buffers
2711  * @phba: Pointer to HBA context object
2712  *
2713  * This function allocates BSG_MBOX_SIZE (4KB) page size dma buffer and
2714  * returns the pointer to the buffer.
2715  **/
2716 static struct lpfc_dmabuf *
2717 lpfc_bsg_dma_page_alloc(struct lpfc_hba *phba)
2718 {
2719         struct lpfc_dmabuf *dmabuf;
2720         struct pci_dev *pcidev = phba->pcidev;
2721
2722         /* allocate dma buffer struct */
2723         dmabuf = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2724         if (!dmabuf)
2725                 return NULL;
2726
2727         INIT_LIST_HEAD(&dmabuf->list);
2728
2729         /* now, allocate dma buffer */
2730         dmabuf->virt = dma_alloc_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2731                                           &(dmabuf->phys), GFP_KERNEL);
2732
2733         if (!dmabuf->virt) {
2734                 kfree(dmabuf);
2735                 return NULL;
2736         }
2737
2738         return dmabuf;
2739 }
2740
2741 /**
2742  * lpfc_bsg_dma_page_free - free a bsg mbox page sized dma buffer
2743  * @phba: Pointer to HBA context object.
2744  * @dmabuf: Pointer to the bsg mbox page sized dma buffer descriptor.
2745  *
2746  * This routine just simply frees a dma buffer and its associated buffer
2747  * descriptor referred by @dmabuf.
2748  **/
2749 static void
2750 lpfc_bsg_dma_page_free(struct lpfc_hba *phba, struct lpfc_dmabuf *dmabuf)
2751 {
2752         struct pci_dev *pcidev = phba->pcidev;
2753
2754         if (!dmabuf)
2755                 return;
2756
2757         if (dmabuf->virt)
2758                 dma_free_coherent(&pcidev->dev, BSG_MBOX_SIZE,
2759                                   dmabuf->virt, dmabuf->phys);
2760         kfree(dmabuf);
2761         return;
2762 }
2763
2764 /**
2765  * lpfc_bsg_dma_page_list_free - free a list of bsg mbox page sized dma buffers
2766  * @phba: Pointer to HBA context object.
2767  * @dmabuf_list: Pointer to a list of bsg mbox page sized dma buffer descs.
2768  *
2769  * This routine just simply frees all dma buffers and their associated buffer
2770  * descriptors referred by @dmabuf_list.
2771  **/
2772 static void
2773 lpfc_bsg_dma_page_list_free(struct lpfc_hba *phba,
2774                             struct list_head *dmabuf_list)
2775 {
2776         struct lpfc_dmabuf *dmabuf, *next_dmabuf;
2777
2778         if (list_empty(dmabuf_list))
2779                 return;
2780
2781         list_for_each_entry_safe(dmabuf, next_dmabuf, dmabuf_list, list) {
2782                 list_del_init(&dmabuf->list);
2783                 lpfc_bsg_dma_page_free(phba, dmabuf);
2784         }
2785         return;
2786 }
2787
2788 /**
2789  * diag_cmd_data_alloc - fills in a bde struct with dma buffers
2790  * @phba: Pointer to HBA context object
2791  * @bpl: Pointer to 64 bit bde structure
2792  * @size: Number of bytes to process
2793  * @nocopydata: Flag to copy user data into the allocated buffer
2794  *
2795  * This function allocates page size buffers and populates an lpfc_dmabufext.
2796  * If allowed the user data pointed to with indataptr is copied into the kernel
2797  * memory. The chained list of page size buffers is returned.
2798  **/
2799 static struct lpfc_dmabufext *
2800 diag_cmd_data_alloc(struct lpfc_hba *phba,
2801                    struct ulp_bde64 *bpl, uint32_t size,
2802                    int nocopydata)
2803 {
2804         struct lpfc_dmabufext *mlist = NULL;
2805         struct lpfc_dmabufext *dmp;
2806         int cnt, offset = 0, i = 0;
2807         struct pci_dev *pcidev;
2808
2809         pcidev = phba->pcidev;
2810
2811         while (size) {
2812                 /* We get chunks of 4K */
2813                 if (size > BUF_SZ_4K)
2814                         cnt = BUF_SZ_4K;
2815                 else
2816                         cnt = size;
2817
2818                 /* allocate struct lpfc_dmabufext buffer header */
2819                 dmp = kmalloc(sizeof(struct lpfc_dmabufext), GFP_KERNEL);
2820                 if (!dmp)
2821                         goto out;
2822
2823                 INIT_LIST_HEAD(&dmp->dma.list);
2824
2825                 /* Queue it to a linked list */
2826                 if (mlist)
2827                         list_add_tail(&dmp->dma.list, &mlist->dma.list);
2828                 else
2829                         mlist = dmp;
2830
2831                 /* allocate buffer */
2832                 dmp->dma.virt = dma_alloc_coherent(&pcidev->dev,
2833                                                    cnt,
2834                                                    &(dmp->dma.phys),
2835                                                    GFP_KERNEL);
2836
2837                 if (!dmp->dma.virt)
2838                         goto out;
2839
2840                 dmp->size = cnt;
2841
2842                 if (nocopydata) {
2843                         bpl->tus.f.bdeFlags = 0;
2844                 } else {
2845                         memset((uint8_t *)dmp->dma.virt, 0, cnt);
2846                         bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I;
2847                 }
2848
2849                 /* build buffer ptr list for IOCB */
2850                 bpl->addrLow = le32_to_cpu(putPaddrLow(dmp->dma.phys));
2851                 bpl->addrHigh = le32_to_cpu(putPaddrHigh(dmp->dma.phys));
2852                 bpl->tus.f.bdeSize = (ushort) cnt;
2853                 bpl->tus.w = le32_to_cpu(bpl->tus.w);
2854                 bpl++;
2855
2856                 i++;
2857                 offset += cnt;
2858                 size -= cnt;
2859         }
2860
2861         if (mlist) {
2862                 mlist->flag = i;
2863                 return mlist;
2864         }
2865 out:
2866         diag_cmd_data_free(phba, mlist);
2867         return NULL;
2868 }
2869
2870 /**
2871  * lpfcdiag_sli3_loop_post_rxbufs - post the receive buffers for an unsol CT cmd
2872  * @phba: Pointer to HBA context object
2873  * @rxxri: Receive exchange id
2874  * @len: Number of data bytes
2875  *
2876  * This function allocates and posts a data buffer of sufficient size to receive
2877  * an unsolicited CT command.
2878  **/
2879 static int lpfcdiag_sli3_loop_post_rxbufs(struct lpfc_hba *phba, uint16_t rxxri,
2880                                           size_t len)
2881 {
2882         struct lpfc_sli_ring *pring;
2883         struct lpfc_iocbq *cmdiocbq;
2884         IOCB_t *cmd = NULL;
2885         struct list_head head, *curr, *next;
2886         struct lpfc_dmabuf *rxbmp;
2887         struct lpfc_dmabuf *dmp;
2888         struct lpfc_dmabuf *mp[2] = {NULL, NULL};
2889         struct ulp_bde64 *rxbpl = NULL;
2890         uint32_t num_bde;
2891         struct lpfc_dmabufext *rxbuffer = NULL;
2892         int ret_val = 0;
2893         int iocb_stat;
2894         int i = 0;
2895
2896         pring = lpfc_phba_elsring(phba);
2897
2898         cmdiocbq = lpfc_sli_get_iocbq(phba);
2899         rxbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
2900         if (rxbmp != NULL) {
2901                 rxbmp->virt = lpfc_mbuf_alloc(phba, 0, &rxbmp->phys);
2902                 if (rxbmp->virt) {
2903                         INIT_LIST_HEAD(&rxbmp->list);
2904                         rxbpl = (struct ulp_bde64 *) rxbmp->virt;
2905                         rxbuffer = diag_cmd_data_alloc(phba, rxbpl, len, 0);
2906                 }
2907         }
2908
2909         if (!cmdiocbq || !rxbmp || !rxbpl || !rxbuffer || !pring) {
2910                 ret_val = -ENOMEM;
2911                 goto err_post_rxbufs_exit;
2912         }
2913
2914         /* Queue buffers for the receive exchange */
2915         num_bde = (uint32_t)rxbuffer->flag;
2916         dmp = &rxbuffer->dma;
2917         cmd = &cmdiocbq->iocb;
2918         i = 0;
2919
2920         INIT_LIST_HEAD(&head);
2921         list_add_tail(&head, &dmp->list);
2922         list_for_each_safe(curr, next, &head) {
2923                 mp[i] = list_entry(curr, struct lpfc_dmabuf, list);
2924                 list_del(curr);
2925
2926                 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
2927                         mp[i]->buffer_tag = lpfc_sli_get_buffer_tag(phba);
2928                         cmd->un.quexri64cx.buff.bde.addrHigh =
2929                                 putPaddrHigh(mp[i]->phys);
2930                         cmd->un.quexri64cx.buff.bde.addrLow =
2931                                 putPaddrLow(mp[i]->phys);
2932                         cmd->un.quexri64cx.buff.bde.tus.f.bdeSize =
2933                                 ((struct lpfc_dmabufext *)mp[i])->size;
2934                         cmd->un.quexri64cx.buff.buffer_tag = mp[i]->buffer_tag;
2935                         cmd->ulpCommand = CMD_QUE_XRI64_CX;
2936                         cmd->ulpPU = 0;
2937                         cmd->ulpLe = 1;
2938                         cmd->ulpBdeCount = 1;
2939                         cmd->unsli3.que_xri64cx_ext_words.ebde_count = 0;
2940
2941                 } else {
2942                         cmd->un.cont64[i].addrHigh = putPaddrHigh(mp[i]->phys);
2943                         cmd->un.cont64[i].addrLow = putPaddrLow(mp[i]->phys);
2944                         cmd->un.cont64[i].tus.f.bdeSize =
2945                                 ((struct lpfc_dmabufext *)mp[i])->size;
2946                         cmd->ulpBdeCount = ++i;
2947
2948                         if ((--num_bde > 0) && (i < 2))
2949                                 continue;
2950
2951                         cmd->ulpCommand = CMD_QUE_XRI_BUF64_CX;
2952                         cmd->ulpLe = 1;
2953                 }
2954
2955                 cmd->ulpClass = CLASS3;
2956                 cmd->ulpContext = rxxri;
2957
2958                 iocb_stat = lpfc_sli_issue_iocb(phba, LPFC_ELS_RING, cmdiocbq,
2959                                                 0);
2960                 if (iocb_stat == IOCB_ERROR) {
2961                         diag_cmd_data_free(phba,
2962                                 (struct lpfc_dmabufext *)mp[0]);
2963                         if (mp[1])
2964                                 diag_cmd_data_free(phba,
2965                                           (struct lpfc_dmabufext *)mp[1]);
2966                         dmp = list_entry(next, struct lpfc_dmabuf, list);
2967                         ret_val = -EIO;
2968                         goto err_post_rxbufs_exit;
2969                 }
2970
2971                 lpfc_sli_ringpostbuf_put(phba, pring, mp[0]);
2972                 if (mp[1]) {
2973                         lpfc_sli_ringpostbuf_put(phba, pring, mp[1]);
2974                         mp[1] = NULL;
2975                 }
2976
2977                 /* The iocb was freed by lpfc_sli_issue_iocb */
2978                 cmdiocbq = lpfc_sli_get_iocbq(phba);
2979                 if (!cmdiocbq) {
2980                         dmp = list_entry(next, struct lpfc_dmabuf, list);
2981                         ret_val = -EIO;
2982                         goto err_post_rxbufs_exit;
2983                 }
2984                 cmd = &cmdiocbq->iocb;
2985                 i = 0;
2986         }
2987         list_del(&head);
2988
2989 err_post_rxbufs_exit:
2990
2991         if (rxbmp) {
2992                 if (rxbmp->virt)
2993                         lpfc_mbuf_free(phba, rxbmp->virt, rxbmp->phys);
2994                 kfree(rxbmp);
2995         }
2996
2997         if (cmdiocbq)
2998                 lpfc_sli_release_iocbq(phba, cmdiocbq);
2999         return ret_val;
3000 }
3001
3002 /**
3003  * lpfc_bsg_diag_loopback_run - run loopback on a port by issue ct cmd to itself
3004  * @job: LPFC_BSG_VENDOR_DIAG_TEST fc_bsg_job
3005  *
3006  * This function receives a user data buffer to be transmitted and received on
3007  * the same port, the link must be up and in loopback mode prior
3008  * to being called.
3009  * 1. A kernel buffer is allocated to copy the user data into.
3010  * 2. The port registers with "itself".
3011  * 3. The transmit and receive exchange ids are obtained.
3012  * 4. The receive exchange id is posted.
3013  * 5. A new els loopback event is created.
3014  * 6. The command and response iocbs are allocated.
3015  * 7. The cmd iocb FsType is set to elx loopback and the CmdRsp to looppback.
3016  *
3017  * This function is meant to be called n times while the port is in loopback
3018  * so it is the apps responsibility to issue a reset to take the port out
3019  * of loopback mode.
3020  **/
3021 static int
3022 lpfc_bsg_diag_loopback_run(struct bsg_job *job)
3023 {
3024         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
3025         struct fc_bsg_reply *bsg_reply = job->reply;
3026         struct lpfc_hba *phba = vport->phba;
3027         struct lpfc_bsg_event *evt;
3028         struct event_data *evdat;
3029         struct lpfc_sli *psli = &phba->sli;
3030         uint32_t size;
3031         uint32_t full_size;
3032         size_t segment_len = 0, segment_offset = 0, current_offset = 0;
3033         uint16_t rpi = 0;
3034         struct lpfc_iocbq *cmdiocbq, *rspiocbq = NULL;
3035         union lpfc_wqe128 *cmdwqe, *rspwqe;
3036         struct lpfc_sli_ct_request *ctreq;
3037         struct lpfc_dmabuf *txbmp;
3038         struct ulp_bde64 *txbpl = NULL;
3039         struct lpfc_dmabufext *txbuffer = NULL;
3040         struct list_head head;
3041         struct lpfc_dmabuf  *curr;
3042         uint16_t txxri = 0, rxxri;
3043         uint32_t num_bde;
3044         uint8_t *ptr = NULL, *rx_databuf = NULL;
3045         int rc = 0;
3046         int time_left;
3047         int iocb_stat = IOCB_SUCCESS;
3048         unsigned long flags;
3049         void *dataout = NULL;
3050         uint32_t total_mem;
3051
3052         /* in case no data is returned return just the return code */
3053         bsg_reply->reply_payload_rcv_len = 0;
3054
3055         if (job->request_len <
3056             sizeof(struct fc_bsg_request) + sizeof(struct diag_mode_test)) {
3057                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3058                                 "2739 Received DIAG TEST request below minimum "
3059                                 "size\n");
3060                 rc = -EINVAL;
3061                 goto loopback_test_exit;
3062         }
3063
3064         if (job->request_payload.payload_len !=
3065                 job->reply_payload.payload_len) {
3066                 rc = -EINVAL;
3067                 goto loopback_test_exit;
3068         }
3069
3070         if ((phba->link_state == LPFC_HBA_ERROR) ||
3071             (psli->sli_flag & LPFC_BLOCK_MGMT_IO) ||
3072             (!(psli->sli_flag & LPFC_SLI_ACTIVE))) {
3073                 rc = -EACCES;
3074                 goto loopback_test_exit;
3075         }
3076
3077         if (!lpfc_is_link_up(phba) || !(phba->link_flag & LS_LOOPBACK_MODE)) {
3078                 rc = -EACCES;
3079                 goto loopback_test_exit;
3080         }
3081
3082         size = job->request_payload.payload_len;
3083         full_size = size + ELX_LOOPBACK_HEADER_SZ; /* plus the header */
3084
3085         if ((size == 0) || (size > 80 * BUF_SZ_4K)) {
3086                 rc = -ERANGE;
3087                 goto loopback_test_exit;
3088         }
3089
3090         if (full_size >= BUF_SZ_4K) {
3091                 /*
3092                  * Allocate memory for ioctl data. If buffer is bigger than 64k,
3093                  * then we allocate 64k and re-use that buffer over and over to
3094                  * xfer the whole block. This is because Linux kernel has a
3095                  * problem allocating more than 120k of kernel space memory. Saw
3096                  * problem with GET_FCPTARGETMAPPING...
3097                  */
3098                 if (size <= (64 * 1024))
3099                         total_mem = full_size;
3100                 else
3101                         total_mem = 64 * 1024;
3102         } else
3103                 /* Allocate memory for ioctl data */
3104                 total_mem = BUF_SZ_4K;
3105
3106         dataout = kmalloc(total_mem, GFP_KERNEL);
3107         if (dataout == NULL) {
3108                 rc = -ENOMEM;
3109                 goto loopback_test_exit;
3110         }
3111
3112         ptr = dataout;
3113         ptr += ELX_LOOPBACK_HEADER_SZ;
3114         sg_copy_to_buffer(job->request_payload.sg_list,
3115                                 job->request_payload.sg_cnt,
3116                                 ptr, size);
3117         rc = lpfcdiag_loop_self_reg(phba, &rpi);
3118         if (rc)
3119                 goto loopback_test_exit;
3120
3121         if (phba->sli_rev < LPFC_SLI_REV4) {
3122                 rc = lpfcdiag_loop_get_xri(phba, rpi, &txxri, &rxxri);
3123                 if (rc) {
3124                         lpfcdiag_loop_self_unreg(phba, rpi);
3125                         goto loopback_test_exit;
3126                 }
3127
3128                 rc = lpfcdiag_sli3_loop_post_rxbufs(phba, rxxri, full_size);
3129                 if (rc) {
3130                         lpfcdiag_loop_self_unreg(phba, rpi);
3131                         goto loopback_test_exit;
3132                 }
3133         }
3134         evt = lpfc_bsg_event_new(FC_REG_CT_EVENT, current->pid,
3135                                 SLI_CT_ELX_LOOPBACK);
3136         if (!evt) {
3137                 lpfcdiag_loop_self_unreg(phba, rpi);
3138                 rc = -ENOMEM;
3139                 goto loopback_test_exit;
3140         }
3141
3142         spin_lock_irqsave(&phba->ct_ev_lock, flags);
3143         list_add(&evt->node, &phba->ct_ev_waiters);
3144         lpfc_bsg_event_ref(evt);
3145         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3146
3147         cmdiocbq = lpfc_sli_get_iocbq(phba);
3148         if (phba->sli_rev < LPFC_SLI_REV4)
3149                 rspiocbq = lpfc_sli_get_iocbq(phba);
3150         txbmp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3151
3152         if (txbmp) {
3153                 txbmp->virt = lpfc_mbuf_alloc(phba, 0, &txbmp->phys);
3154                 if (txbmp->virt) {
3155                         INIT_LIST_HEAD(&txbmp->list);
3156                         txbpl = (struct ulp_bde64 *) txbmp->virt;
3157                         txbuffer = diag_cmd_data_alloc(phba,
3158                                                         txbpl, full_size, 0);
3159                 }
3160         }
3161
3162         if (!cmdiocbq || !txbmp || !txbpl || !txbuffer || !txbmp->virt) {
3163                 rc = -ENOMEM;
3164                 goto err_loopback_test_exit;
3165         }
3166         if ((phba->sli_rev < LPFC_SLI_REV4) && !rspiocbq) {
3167                 rc = -ENOMEM;
3168                 goto err_loopback_test_exit;
3169         }
3170
3171         cmdwqe = &cmdiocbq->wqe;
3172         memset(cmdwqe, 0, sizeof(union lpfc_wqe));
3173         if (phba->sli_rev < LPFC_SLI_REV4) {
3174                 rspwqe = &rspiocbq->wqe;
3175                 memset(rspwqe, 0, sizeof(union lpfc_wqe));
3176         }
3177
3178         INIT_LIST_HEAD(&head);
3179         list_add_tail(&head, &txbuffer->dma.list);
3180         list_for_each_entry(curr, &head, list) {
3181                 segment_len = ((struct lpfc_dmabufext *)curr)->size;
3182                 if (current_offset == 0) {
3183                         ctreq = curr->virt;
3184                         memset(ctreq, 0, ELX_LOOPBACK_HEADER_SZ);
3185                         ctreq->RevisionId.bits.Revision = SLI_CT_REVISION;
3186                         ctreq->RevisionId.bits.InId = 0;
3187                         ctreq->FsType = SLI_CT_ELX_LOOPBACK;
3188                         ctreq->FsSubType = 0;
3189                         ctreq->CommandResponse.bits.CmdRsp = cpu_to_be16(ELX_LOOPBACK_DATA);
3190                         ctreq->CommandResponse.bits.Size   = cpu_to_be16(size);
3191                         segment_offset = ELX_LOOPBACK_HEADER_SZ;
3192                 } else
3193                         segment_offset = 0;
3194
3195                 BUG_ON(segment_offset >= segment_len);
3196                 memcpy(curr->virt + segment_offset,
3197                         ptr + current_offset,
3198                         segment_len - segment_offset);
3199
3200                 current_offset += segment_len - segment_offset;
3201                 BUG_ON(current_offset > size);
3202         }
3203         list_del(&head);
3204
3205         /* Build the XMIT_SEQUENCE iocb */
3206         num_bde = (uint32_t)txbuffer->flag;
3207
3208         cmdiocbq->num_bdes = num_bde;
3209         cmdiocbq->cmd_flag |= LPFC_IO_LIBDFC;
3210         cmdiocbq->cmd_flag |= LPFC_IO_LOOPBACK;
3211         cmdiocbq->vport = phba->pport;
3212         cmdiocbq->cmd_cmpl = NULL;
3213         cmdiocbq->bpl_dmabuf = txbmp;
3214
3215         if (phba->sli_rev < LPFC_SLI_REV4) {
3216                 lpfc_sli_prep_xmit_seq64(phba, cmdiocbq, txbmp, 0, txxri,
3217                                          num_bde, FC_RCTL_DD_UNSOL_CTL, 1,
3218                                          CMD_XMIT_SEQUENCE64_CX);
3219
3220         } else {
3221                 lpfc_sli_prep_xmit_seq64(phba, cmdiocbq, txbmp,
3222                                          phba->sli4_hba.rpi_ids[rpi], 0xffff,
3223                                          full_size, FC_RCTL_DD_UNSOL_CTL, 1,
3224                                          CMD_XMIT_SEQUENCE64_WQE);
3225                 cmdiocbq->sli4_xritag = NO_XRI;
3226         }
3227
3228         iocb_stat = lpfc_sli_issue_iocb_wait(phba, LPFC_ELS_RING, cmdiocbq,
3229                                              rspiocbq, (phba->fc_ratov * 2) +
3230                                              LPFC_DRVR_TIMEOUT);
3231         if (iocb_stat != IOCB_SUCCESS ||
3232             (phba->sli_rev < LPFC_SLI_REV4 &&
3233              (get_job_ulpstatus(phba, rspiocbq) != IOSTAT_SUCCESS))) {
3234                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3235                                 "3126 Failed loopback test issue iocb: "
3236                                 "iocb_stat:x%x\n", iocb_stat);
3237                 rc = -EIO;
3238                 goto err_loopback_test_exit;
3239         }
3240
3241         evt->waiting = 1;
3242         time_left = wait_event_interruptible_timeout(
3243                 evt->wq, !list_empty(&evt->events_to_see),
3244                 msecs_to_jiffies(1000 *
3245                         ((phba->fc_ratov * 2) + LPFC_DRVR_TIMEOUT)));
3246         evt->waiting = 0;
3247         if (list_empty(&evt->events_to_see)) {
3248                 rc = (time_left) ? -EINTR : -ETIMEDOUT;
3249                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3250                                 "3125 Not receiving unsolicited event, "
3251                                 "rc:x%x\n", rc);
3252         } else {
3253                 spin_lock_irqsave(&phba->ct_ev_lock, flags);
3254                 list_move(evt->events_to_see.prev, &evt->events_to_get);
3255                 evdat = list_entry(evt->events_to_get.prev,
3256                                    typeof(*evdat), node);
3257                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3258                 rx_databuf = evdat->data;
3259                 if (evdat->len != full_size) {
3260                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3261                                 "1603 Loopback test did not receive expected "
3262                                 "data length. actual length 0x%x expected "
3263                                 "length 0x%x\n",
3264                                 evdat->len, full_size);
3265                         rc = -EIO;
3266                 } else if (rx_databuf == NULL)
3267                         rc = -EIO;
3268                 else {
3269                         rc = IOCB_SUCCESS;
3270                         /* skip over elx loopback header */
3271                         rx_databuf += ELX_LOOPBACK_HEADER_SZ;
3272                         bsg_reply->reply_payload_rcv_len =
3273                                 sg_copy_from_buffer(job->reply_payload.sg_list,
3274                                                     job->reply_payload.sg_cnt,
3275                                                     rx_databuf, size);
3276                         bsg_reply->reply_payload_rcv_len = size;
3277                 }
3278         }
3279
3280 err_loopback_test_exit:
3281         lpfcdiag_loop_self_unreg(phba, rpi);
3282
3283         spin_lock_irqsave(&phba->ct_ev_lock, flags);
3284         lpfc_bsg_event_unref(evt); /* release ref */
3285         lpfc_bsg_event_unref(evt); /* delete */
3286         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3287
3288         if ((cmdiocbq != NULL) && (iocb_stat != IOCB_TIMEDOUT))
3289                 lpfc_sli_release_iocbq(phba, cmdiocbq);
3290
3291         if (rspiocbq != NULL)
3292                 lpfc_sli_release_iocbq(phba, rspiocbq);
3293
3294         if (txbmp != NULL) {
3295                 if (txbpl != NULL) {
3296                         if (txbuffer != NULL)
3297                                 diag_cmd_data_free(phba, txbuffer);
3298                         lpfc_mbuf_free(phba, txbmp->virt, txbmp->phys);
3299                 }
3300                 kfree(txbmp);
3301         }
3302
3303 loopback_test_exit:
3304         kfree(dataout);
3305         /* make error code available to userspace */
3306         bsg_reply->result = rc;
3307         job->dd_data = NULL;
3308         /* complete the job back to userspace if no error */
3309         if (rc == IOCB_SUCCESS)
3310                 bsg_job_done(job, bsg_reply->result,
3311                                bsg_reply->reply_payload_rcv_len);
3312         return rc;
3313 }
3314
3315 /**
3316  * lpfc_bsg_get_dfc_rev - process a GET_DFC_REV bsg vendor command
3317  * @job: GET_DFC_REV fc_bsg_job
3318  **/
3319 static int
3320 lpfc_bsg_get_dfc_rev(struct bsg_job *job)
3321 {
3322         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
3323         struct fc_bsg_reply *bsg_reply = job->reply;
3324         struct lpfc_hba *phba = vport->phba;
3325         struct get_mgmt_rev_reply *event_reply;
3326         int rc = 0;
3327
3328         if (job->request_len <
3329             sizeof(struct fc_bsg_request) + sizeof(struct get_mgmt_rev)) {
3330                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3331                                 "2740 Received GET_DFC_REV request below "
3332                                 "minimum size\n");
3333                 rc = -EINVAL;
3334                 goto job_error;
3335         }
3336
3337         event_reply = (struct get_mgmt_rev_reply *)
3338                 bsg_reply->reply_data.vendor_reply.vendor_rsp;
3339
3340         if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) {
3341                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3342                                 "2741 Received GET_DFC_REV reply below "
3343                                 "minimum size\n");
3344                 rc = -EINVAL;
3345                 goto job_error;
3346         }
3347
3348         event_reply->info.a_Major = MANAGEMENT_MAJOR_REV;
3349         event_reply->info.a_Minor = MANAGEMENT_MINOR_REV;
3350 job_error:
3351         bsg_reply->result = rc;
3352         if (rc == 0)
3353                 bsg_job_done(job, bsg_reply->result,
3354                                bsg_reply->reply_payload_rcv_len);
3355         return rc;
3356 }
3357
3358 /**
3359  * lpfc_bsg_issue_mbox_cmpl - lpfc_bsg_issue_mbox mbox completion handler
3360  * @phba: Pointer to HBA context object.
3361  * @pmboxq: Pointer to mailbox command.
3362  *
3363  * This is completion handler function for mailbox commands issued from
3364  * lpfc_bsg_issue_mbox function. This function is called by the
3365  * mailbox event handler function with no lock held. This function
3366  * will wake up thread waiting on the wait queue pointed by dd_data
3367  * of the mailbox.
3368  **/
3369 static void
3370 lpfc_bsg_issue_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3371 {
3372         struct bsg_job_data *dd_data;
3373         struct fc_bsg_reply *bsg_reply;
3374         struct bsg_job *job;
3375         uint32_t size;
3376         unsigned long flags;
3377         uint8_t *pmb, *pmb_buf;
3378
3379         dd_data = pmboxq->ctx_ndlp;
3380
3381         /*
3382          * The outgoing buffer is readily referred from the dma buffer,
3383          * just need to get header part from mailboxq structure.
3384          */
3385         pmb = (uint8_t *)&pmboxq->u.mb;
3386         pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3387         memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3388
3389         /* Determine if job has been aborted */
3390
3391         spin_lock_irqsave(&phba->ct_ev_lock, flags);
3392         job = dd_data->set_job;
3393         if (job) {
3394                 /* Prevent timeout handling from trying to abort job  */
3395                 job->dd_data = NULL;
3396         }
3397         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3398
3399         /* Copy the mailbox data to the job if it is still active */
3400
3401         if (job) {
3402                 bsg_reply = job->reply;
3403                 size = job->reply_payload.payload_len;
3404                 bsg_reply->reply_payload_rcv_len =
3405                         sg_copy_from_buffer(job->reply_payload.sg_list,
3406                                             job->reply_payload.sg_cnt,
3407                                             pmb_buf, size);
3408         }
3409
3410         dd_data->set_job = NULL;
3411         mempool_free(dd_data->context_un.mbox.pmboxq, phba->mbox_mem_pool);
3412         lpfc_bsg_dma_page_free(phba, dd_data->context_un.mbox.dmabuffers);
3413         kfree(dd_data);
3414
3415         /* Complete the job if the job is still active */
3416
3417         if (job) {
3418                 bsg_reply->result = 0;
3419                 bsg_job_done(job, bsg_reply->result,
3420                                bsg_reply->reply_payload_rcv_len);
3421         }
3422         return;
3423 }
3424
3425 /**
3426  * lpfc_bsg_check_cmd_access - test for a supported mailbox command
3427  * @phba: Pointer to HBA context object.
3428  * @mb: Pointer to a mailbox object.
3429  * @vport: Pointer to a vport object.
3430  *
3431  * Some commands require the port to be offline, some may not be called from
3432  * the application.
3433  **/
3434 static int lpfc_bsg_check_cmd_access(struct lpfc_hba *phba,
3435         MAILBOX_t *mb, struct lpfc_vport *vport)
3436 {
3437         /* return negative error values for bsg job */
3438         switch (mb->mbxCommand) {
3439         /* Offline only */
3440         case MBX_INIT_LINK:
3441         case MBX_DOWN_LINK:
3442         case MBX_CONFIG_LINK:
3443         case MBX_CONFIG_RING:
3444         case MBX_RESET_RING:
3445         case MBX_UNREG_LOGIN:
3446         case MBX_CLEAR_LA:
3447         case MBX_DUMP_CONTEXT:
3448         case MBX_RUN_DIAGS:
3449         case MBX_RESTART:
3450         case MBX_SET_MASK:
3451                 if (!test_bit(FC_OFFLINE_MODE, &vport->fc_flag)) {
3452                         lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3453                                 "2743 Command 0x%x is illegal in on-line "
3454                                 "state\n",
3455                                 mb->mbxCommand);
3456                         return -EPERM;
3457                 }
3458                 break;
3459         case MBX_WRITE_NV:
3460         case MBX_WRITE_VPARMS:
3461         case MBX_LOAD_SM:
3462         case MBX_READ_NV:
3463         case MBX_READ_CONFIG:
3464         case MBX_READ_RCONFIG:
3465         case MBX_READ_STATUS:
3466         case MBX_READ_XRI:
3467         case MBX_READ_REV:
3468         case MBX_READ_LNK_STAT:
3469         case MBX_DUMP_MEMORY:
3470         case MBX_DOWN_LOAD:
3471         case MBX_UPDATE_CFG:
3472         case MBX_KILL_BOARD:
3473         case MBX_READ_TOPOLOGY:
3474         case MBX_LOAD_AREA:
3475         case MBX_LOAD_EXP_ROM:
3476         case MBX_BEACON:
3477         case MBX_DEL_LD_ENTRY:
3478         case MBX_SET_DEBUG:
3479         case MBX_WRITE_WWN:
3480         case MBX_SLI4_CONFIG:
3481         case MBX_READ_EVENT_LOG:
3482         case MBX_READ_EVENT_LOG_STATUS:
3483         case MBX_WRITE_EVENT_LOG:
3484         case MBX_PORT_CAPABILITIES:
3485         case MBX_PORT_IOV_CONTROL:
3486         case MBX_RUN_BIU_DIAG64:
3487                 break;
3488         case MBX_SET_VARIABLE:
3489                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3490                         "1226 mbox: set_variable 0x%x, 0x%x\n",
3491                         mb->un.varWords[0],
3492                         mb->un.varWords[1]);
3493                 break;
3494         case MBX_READ_SPARM64:
3495         case MBX_REG_LOGIN:
3496         case MBX_REG_LOGIN64:
3497         case MBX_CONFIG_PORT:
3498         case MBX_RUN_BIU_DIAG:
3499         default:
3500                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
3501                         "2742 Unknown Command 0x%x\n",
3502                         mb->mbxCommand);
3503                 return -EPERM;
3504         }
3505
3506         return 0; /* ok */
3507 }
3508
3509 /**
3510  * lpfc_bsg_mbox_ext_session_reset - clean up context of multi-buffer mbox session
3511  * @phba: Pointer to HBA context object.
3512  *
3513  * This is routine clean up and reset BSG handling of multi-buffer mbox
3514  * command session.
3515  **/
3516 static void
3517 lpfc_bsg_mbox_ext_session_reset(struct lpfc_hba *phba)
3518 {
3519         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE)
3520                 return;
3521
3522         /* free all memory, including dma buffers */
3523         lpfc_bsg_dma_page_list_free(phba,
3524                                     &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3525         lpfc_bsg_dma_page_free(phba, phba->mbox_ext_buf_ctx.mbx_dmabuf);
3526         /* multi-buffer write mailbox command pass-through complete */
3527         memset((char *)&phba->mbox_ext_buf_ctx, 0,
3528                sizeof(struct lpfc_mbox_ext_buf_ctx));
3529         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3530
3531         return;
3532 }
3533
3534 /**
3535  * lpfc_bsg_issue_mbox_ext_handle_job - job handler for multi-buffer mbox cmpl
3536  * @phba: Pointer to HBA context object.
3537  * @pmboxq: Pointer to mailbox command.
3538  *
3539  * This is routine handles BSG job for mailbox commands completions with
3540  * multiple external buffers.
3541  **/
3542 static struct bsg_job *
3543 lpfc_bsg_issue_mbox_ext_handle_job(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3544 {
3545         struct bsg_job_data *dd_data;
3546         struct bsg_job *job;
3547         struct fc_bsg_reply *bsg_reply;
3548         uint8_t *pmb, *pmb_buf;
3549         unsigned long flags;
3550         uint32_t size;
3551         int rc = 0;
3552         struct lpfc_dmabuf *dmabuf;
3553         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3554         uint8_t *pmbx;
3555
3556         dd_data = pmboxq->ctx_buf;
3557
3558         /* Determine if job has been aborted */
3559         spin_lock_irqsave(&phba->ct_ev_lock, flags);
3560         job = dd_data->set_job;
3561         if (job) {
3562                 bsg_reply = job->reply;
3563                 /* Prevent timeout handling from trying to abort job  */
3564                 job->dd_data = NULL;
3565         }
3566         spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
3567
3568         /*
3569          * The outgoing buffer is readily referred from the dma buffer,
3570          * just need to get header part from mailboxq structure.
3571          */
3572
3573         pmb = (uint8_t *)&pmboxq->u.mb;
3574         pmb_buf = (uint8_t *)dd_data->context_un.mbox.mb;
3575         /* Copy the byte swapped response mailbox back to the user */
3576         memcpy(pmb_buf, pmb, sizeof(MAILBOX_t));
3577         /* if there is any non-embedded extended data copy that too */
3578         dmabuf = phba->mbox_ext_buf_ctx.mbx_dmabuf;
3579         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3580         if (!bsg_bf_get(lpfc_mbox_hdr_emb,
3581             &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
3582                 pmbx = (uint8_t *)dmabuf->virt;
3583                 /* byte swap the extended data following the mailbox command */
3584                 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3585                         &pmbx[sizeof(MAILBOX_t)],
3586                         sli_cfg_mbx->un.sli_config_emb0_subsys.mse[0].buf_len);
3587         }
3588
3589         /* Complete the job if the job is still active */
3590
3591         if (job) {
3592                 size = job->reply_payload.payload_len;
3593                 bsg_reply->reply_payload_rcv_len =
3594                         sg_copy_from_buffer(job->reply_payload.sg_list,
3595                                             job->reply_payload.sg_cnt,
3596                                             pmb_buf, size);
3597
3598                 /* result for successful */
3599                 bsg_reply->result = 0;
3600
3601                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3602                                 "2937 SLI_CONFIG ext-buffer mailbox command "
3603                                 "(x%x/x%x) complete bsg job done, bsize:%d\n",
3604                                 phba->mbox_ext_buf_ctx.nembType,
3605                                 phba->mbox_ext_buf_ctx.mboxType, size);
3606                 lpfc_idiag_mbxacc_dump_bsg_mbox(phba,
3607                                         phba->mbox_ext_buf_ctx.nembType,
3608                                         phba->mbox_ext_buf_ctx.mboxType,
3609                                         dma_ebuf, sta_pos_addr,
3610                                         phba->mbox_ext_buf_ctx.mbx_dmabuf, 0);
3611         } else {
3612                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3613                                 "2938 SLI_CONFIG ext-buffer mailbox "
3614                                 "command (x%x/x%x) failure, rc:x%x\n",
3615                                 phba->mbox_ext_buf_ctx.nembType,
3616                                 phba->mbox_ext_buf_ctx.mboxType, rc);
3617         }
3618
3619
3620         /* state change */
3621         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_DONE;
3622         kfree(dd_data);
3623         return job;
3624 }
3625
3626 /**
3627  * lpfc_bsg_issue_read_mbox_ext_cmpl - compl handler for multi-buffer read mbox
3628  * @phba: Pointer to HBA context object.
3629  * @pmboxq: Pointer to mailbox command.
3630  *
3631  * This is completion handler function for mailbox read commands with multiple
3632  * external buffers.
3633  **/
3634 static void
3635 lpfc_bsg_issue_read_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3636 {
3637         struct bsg_job *job;
3638         struct fc_bsg_reply *bsg_reply;
3639
3640         job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3641
3642         /* handle the BSG job with mailbox command */
3643         if (!job)
3644                 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3645
3646         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3647                         "2939 SLI_CONFIG ext-buffer rd mailbox command "
3648                         "complete, ctxState:x%x, mbxStatus:x%x\n",
3649                         phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3650
3651         if (pmboxq->u.mb.mbxStatus || phba->mbox_ext_buf_ctx.numBuf == 1)
3652                 lpfc_bsg_mbox_ext_session_reset(phba);
3653
3654         /* free base driver mailbox structure memory */
3655         mempool_free(pmboxq, phba->mbox_mem_pool);
3656
3657         /* if the job is still active, call job done */
3658         if (job) {
3659                 bsg_reply = job->reply;
3660                 bsg_job_done(job, bsg_reply->result,
3661                                bsg_reply->reply_payload_rcv_len);
3662         }
3663         return;
3664 }
3665
3666 /**
3667  * lpfc_bsg_issue_write_mbox_ext_cmpl - cmpl handler for multi-buffer write mbox
3668  * @phba: Pointer to HBA context object.
3669  * @pmboxq: Pointer to mailbox command.
3670  *
3671  * This is completion handler function for mailbox write commands with multiple
3672  * external buffers.
3673  **/
3674 static void
3675 lpfc_bsg_issue_write_mbox_ext_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
3676 {
3677         struct bsg_job *job;
3678         struct fc_bsg_reply *bsg_reply;
3679
3680         job = lpfc_bsg_issue_mbox_ext_handle_job(phba, pmboxq);
3681
3682         /* handle the BSG job with the mailbox command */
3683         if (!job)
3684                 pmboxq->u.mb.mbxStatus = MBXERR_ERROR;
3685
3686         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3687                         "2940 SLI_CONFIG ext-buffer wr mailbox command "
3688                         "complete, ctxState:x%x, mbxStatus:x%x\n",
3689                         phba->mbox_ext_buf_ctx.state, pmboxq->u.mb.mbxStatus);
3690
3691         /* free all memory, including dma buffers */
3692         mempool_free(pmboxq, phba->mbox_mem_pool);
3693         lpfc_bsg_mbox_ext_session_reset(phba);
3694
3695         /* if the job is still active, call job done */
3696         if (job) {
3697                 bsg_reply = job->reply;
3698                 bsg_job_done(job, bsg_reply->result,
3699                                bsg_reply->reply_payload_rcv_len);
3700         }
3701
3702         return;
3703 }
3704
3705 static void
3706 lpfc_bsg_sli_cfg_dma_desc_setup(struct lpfc_hba *phba, enum nemb_type nemb_tp,
3707                                 uint32_t index, struct lpfc_dmabuf *mbx_dmabuf,
3708                                 struct lpfc_dmabuf *ext_dmabuf)
3709 {
3710         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3711
3712         /* pointer to the start of mailbox command */
3713         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)mbx_dmabuf->virt;
3714
3715         if (nemb_tp == nemb_mse) {
3716                 if (index == 0) {
3717                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3718                                 mse[index].pa_hi =
3719                                 putPaddrHigh(mbx_dmabuf->phys +
3720                                              sizeof(MAILBOX_t));
3721                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3722                                 mse[index].pa_lo =
3723                                 putPaddrLow(mbx_dmabuf->phys +
3724                                             sizeof(MAILBOX_t));
3725                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3726                                         "2943 SLI_CONFIG(mse)[%d], "
3727                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3728                                         index,
3729                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3730                                         mse[index].buf_len,
3731                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3732                                         mse[index].pa_hi,
3733                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3734                                         mse[index].pa_lo);
3735                 } else {
3736                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3737                                 mse[index].pa_hi =
3738                                 putPaddrHigh(ext_dmabuf->phys);
3739                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3740                                 mse[index].pa_lo =
3741                                 putPaddrLow(ext_dmabuf->phys);
3742                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3743                                         "2944 SLI_CONFIG(mse)[%d], "
3744                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3745                                         index,
3746                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3747                                         mse[index].buf_len,
3748                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3749                                         mse[index].pa_hi,
3750                                         sli_cfg_mbx->un.sli_config_emb0_subsys.
3751                                         mse[index].pa_lo);
3752                 }
3753         } else {
3754                 if (index == 0) {
3755                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3756                                 hbd[index].pa_hi =
3757                                 putPaddrHigh(mbx_dmabuf->phys +
3758                                              sizeof(MAILBOX_t));
3759                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3760                                 hbd[index].pa_lo =
3761                                 putPaddrLow(mbx_dmabuf->phys +
3762                                             sizeof(MAILBOX_t));
3763                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3764                                         "3007 SLI_CONFIG(hbd)[%d], "
3765                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3766                                 index,
3767                                 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3768                                 &sli_cfg_mbx->un.
3769                                 sli_config_emb1_subsys.hbd[index]),
3770                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3771                                 hbd[index].pa_hi,
3772                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3773                                 hbd[index].pa_lo);
3774
3775                 } else {
3776                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3777                                 hbd[index].pa_hi =
3778                                 putPaddrHigh(ext_dmabuf->phys);
3779                         sli_cfg_mbx->un.sli_config_emb1_subsys.
3780                                 hbd[index].pa_lo =
3781                                 putPaddrLow(ext_dmabuf->phys);
3782                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3783                                         "3008 SLI_CONFIG(hbd)[%d], "
3784                                         "bufLen:%d, addrHi:x%x, addrLo:x%x\n",
3785                                 index,
3786                                 bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
3787                                 &sli_cfg_mbx->un.
3788                                 sli_config_emb1_subsys.hbd[index]),
3789                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3790                                 hbd[index].pa_hi,
3791                                 sli_cfg_mbx->un.sli_config_emb1_subsys.
3792                                 hbd[index].pa_lo);
3793                 }
3794         }
3795         return;
3796 }
3797
3798 /**
3799  * lpfc_bsg_sli_cfg_read_cmd_ext - sli_config non-embedded mailbox cmd read
3800  * @phba: Pointer to HBA context object.
3801  * @job: Pointer to the job object.
3802  * @nemb_tp: Enumerate of non-embedded mailbox command type.
3803  * @dmabuf: Pointer to a DMA buffer descriptor.
3804  *
3805  * This routine performs SLI_CONFIG (0x9B) read mailbox command operation with
3806  * non-embedded external buffers.
3807  **/
3808 static int
3809 lpfc_bsg_sli_cfg_read_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
3810                               enum nemb_type nemb_tp,
3811                               struct lpfc_dmabuf *dmabuf)
3812 {
3813         struct fc_bsg_request *bsg_request = job->request;
3814         struct lpfc_sli_config_mbox *sli_cfg_mbx;
3815         struct dfc_mbox_req *mbox_req;
3816         struct lpfc_dmabuf *curr_dmabuf, *next_dmabuf;
3817         uint32_t ext_buf_cnt, ext_buf_index;
3818         struct lpfc_dmabuf *ext_dmabuf = NULL;
3819         struct bsg_job_data *dd_data = NULL;
3820         LPFC_MBOXQ_t *pmboxq = NULL;
3821         MAILBOX_t *pmb;
3822         uint8_t *pmbx;
3823         int rc, i;
3824
3825         mbox_req =
3826            (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
3827
3828         /* pointer to the start of mailbox command */
3829         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
3830
3831         if (nemb_tp == nemb_mse) {
3832                 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
3833                         &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
3834                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
3835                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3836                                         "2945 Handled SLI_CONFIG(mse) rd, "
3837                                         "ext_buf_cnt(%d) out of range(%d)\n",
3838                                         ext_buf_cnt,
3839                                         LPFC_MBX_SLI_CONFIG_MAX_MSE);
3840                         rc = -ERANGE;
3841                         goto job_error;
3842                 }
3843                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3844                                 "2941 Handled SLI_CONFIG(mse) rd, "
3845                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
3846         } else {
3847                 /* sanity check on interface type for support */
3848                 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
3849                     LPFC_SLI_INTF_IF_TYPE_2) {
3850                         rc = -ENODEV;
3851                         goto job_error;
3852                 }
3853                 /* nemb_tp == nemb_hbd */
3854                 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
3855                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
3856                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3857                                         "2946 Handled SLI_CONFIG(hbd) rd, "
3858                                         "ext_buf_cnt(%d) out of range(%d)\n",
3859                                         ext_buf_cnt,
3860                                         LPFC_MBX_SLI_CONFIG_MAX_HBD);
3861                         rc = -ERANGE;
3862                         goto job_error;
3863                 }
3864                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3865                                 "2942 Handled SLI_CONFIG(hbd) rd, "
3866                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
3867         }
3868
3869         /* before dma descriptor setup */
3870         lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3871                                         sta_pre_addr, dmabuf, ext_buf_cnt);
3872
3873         /* reject non-embedded mailbox command with none external buffer */
3874         if (ext_buf_cnt == 0) {
3875                 rc = -EPERM;
3876                 goto job_error;
3877         } else if (ext_buf_cnt > 1) {
3878                 /* additional external read buffers */
3879                 for (i = 1; i < ext_buf_cnt; i++) {
3880                         ext_dmabuf = lpfc_bsg_dma_page_alloc(phba);
3881                         if (!ext_dmabuf) {
3882                                 rc = -ENOMEM;
3883                                 goto job_error;
3884                         }
3885                         list_add_tail(&ext_dmabuf->list,
3886                                       &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3887                 }
3888         }
3889
3890         /* bsg tracking structure */
3891         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
3892         if (!dd_data) {
3893                 rc = -ENOMEM;
3894                 goto job_error;
3895         }
3896
3897         /* mailbox command structure for base driver */
3898         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3899         if (!pmboxq) {
3900                 rc = -ENOMEM;
3901                 goto job_error;
3902         }
3903         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
3904
3905         /* for the first external buffer */
3906         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
3907
3908         /* for the rest of external buffer descriptors if any */
3909         if (ext_buf_cnt > 1) {
3910                 ext_buf_index = 1;
3911                 list_for_each_entry_safe(curr_dmabuf, next_dmabuf,
3912                                 &phba->mbox_ext_buf_ctx.ext_dmabuf_list, list) {
3913                         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp,
3914                                                 ext_buf_index, dmabuf,
3915                                                 curr_dmabuf);
3916                         ext_buf_index++;
3917                 }
3918         }
3919
3920         /* after dma descriptor setup */
3921         lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_rd, dma_mbox,
3922                                         sta_pos_addr, dmabuf, ext_buf_cnt);
3923
3924         /* construct base driver mbox command */
3925         pmb = &pmboxq->u.mb;
3926         pmbx = (uint8_t *)dmabuf->virt;
3927         memcpy(pmb, pmbx, sizeof(*pmb));
3928         pmb->mbxOwner = OWN_HOST;
3929         pmboxq->vport = phba->pport;
3930
3931         /* multi-buffer handling context */
3932         phba->mbox_ext_buf_ctx.nembType = nemb_tp;
3933         phba->mbox_ext_buf_ctx.mboxType = mbox_rd;
3934         phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
3935         phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
3936         phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
3937         phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
3938
3939         /* callback for multi-buffer read mailbox command */
3940         pmboxq->mbox_cmpl = lpfc_bsg_issue_read_mbox_ext_cmpl;
3941
3942         /* context fields to callback function */
3943         pmboxq->ctx_buf = dd_data;
3944         dd_data->type = TYPE_MBOX;
3945         dd_data->set_job = job;
3946         dd_data->context_un.mbox.pmboxq = pmboxq;
3947         dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
3948         job->dd_data = dd_data;
3949
3950         /* state change */
3951         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
3952
3953         /*
3954          * Non-embedded mailbox subcommand data gets byte swapped here because
3955          * the lower level driver code only does the first 64 mailbox words.
3956          */
3957         if ((!bsg_bf_get(lpfc_mbox_hdr_emb,
3958             &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) &&
3959                 (nemb_tp == nemb_mse))
3960                 lpfc_sli_pcimem_bcopy(&pmbx[sizeof(MAILBOX_t)],
3961                         &pmbx[sizeof(MAILBOX_t)],
3962                                 sli_cfg_mbx->un.sli_config_emb0_subsys.
3963                                         mse[0].buf_len);
3964
3965         rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
3966         if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
3967                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
3968                                 "2947 Issued SLI_CONFIG ext-buffer "
3969                                 "mailbox command, rc:x%x\n", rc);
3970                 return SLI_CONFIG_HANDLED;
3971         }
3972         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
3973                         "2948 Failed to issue SLI_CONFIG ext-buffer "
3974                         "mailbox command, rc:x%x\n", rc);
3975         rc = -EPIPE;
3976
3977 job_error:
3978         if (pmboxq)
3979                 mempool_free(pmboxq, phba->mbox_mem_pool);
3980         lpfc_bsg_dma_page_list_free(phba,
3981                                     &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
3982         kfree(dd_data);
3983         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
3984         return rc;
3985 }
3986
3987 /**
3988  * lpfc_bsg_sli_cfg_write_cmd_ext - sli_config non-embedded mailbox cmd write
3989  * @phba: Pointer to HBA context object.
3990  * @job: Pointer to the job object.
3991  * @nemb_tp: Enumerate of non-embedded mailbox command type.
3992  * @dmabuf: Pointer to a DMA buffer descriptor.
3993  *
3994  * This routine performs SLI_CONFIG (0x9B) write mailbox command operation with
3995  * non-embedded external buffers.
3996  **/
3997 static int
3998 lpfc_bsg_sli_cfg_write_cmd_ext(struct lpfc_hba *phba, struct bsg_job *job,
3999                                enum nemb_type nemb_tp,
4000                                struct lpfc_dmabuf *dmabuf)
4001 {
4002         struct fc_bsg_request *bsg_request = job->request;
4003         struct fc_bsg_reply *bsg_reply = job->reply;
4004         struct dfc_mbox_req *mbox_req;
4005         struct lpfc_sli_config_mbox *sli_cfg_mbx;
4006         uint32_t ext_buf_cnt;
4007         struct bsg_job_data *dd_data = NULL;
4008         LPFC_MBOXQ_t *pmboxq = NULL;
4009         MAILBOX_t *pmb;
4010         uint8_t *mbx;
4011         int rc = SLI_CONFIG_NOT_HANDLED, i;
4012
4013         mbox_req =
4014            (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4015
4016         /* pointer to the start of mailbox command */
4017         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4018
4019         if (nemb_tp == nemb_mse) {
4020                 ext_buf_cnt = bsg_bf_get(lpfc_mbox_hdr_mse_cnt,
4021                         &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr);
4022                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_MSE) {
4023                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4024                                         "2953 Failed SLI_CONFIG(mse) wr, "
4025                                         "ext_buf_cnt(%d) out of range(%d)\n",
4026                                         ext_buf_cnt,
4027                                         LPFC_MBX_SLI_CONFIG_MAX_MSE);
4028                         return -ERANGE;
4029                 }
4030                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4031                                 "2949 Handled SLI_CONFIG(mse) wr, "
4032                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
4033         } else {
4034                 /* sanity check on interface type for support */
4035                 if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) <
4036                     LPFC_SLI_INTF_IF_TYPE_2)
4037                         return -ENODEV;
4038                 /* nemb_tp == nemb_hbd */
4039                 ext_buf_cnt = sli_cfg_mbx->un.sli_config_emb1_subsys.hbd_count;
4040                 if (ext_buf_cnt > LPFC_MBX_SLI_CONFIG_MAX_HBD) {
4041                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4042                                         "2954 Failed SLI_CONFIG(hbd) wr, "
4043                                         "ext_buf_cnt(%d) out of range(%d)\n",
4044                                         ext_buf_cnt,
4045                                         LPFC_MBX_SLI_CONFIG_MAX_HBD);
4046                         return -ERANGE;
4047                 }
4048                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4049                                 "2950 Handled SLI_CONFIG(hbd) wr, "
4050                                 "ext_buf_cnt:%d\n", ext_buf_cnt);
4051         }
4052
4053         /* before dma buffer descriptor setup */
4054         lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4055                                         sta_pre_addr, dmabuf, ext_buf_cnt);
4056
4057         if (ext_buf_cnt == 0)
4058                 return -EPERM;
4059
4060         /* for the first external buffer */
4061         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, 0, dmabuf, dmabuf);
4062
4063         /* after dma descriptor setup */
4064         lpfc_idiag_mbxacc_dump_bsg_mbox(phba, nemb_tp, mbox_wr, dma_mbox,
4065                                         sta_pos_addr, dmabuf, ext_buf_cnt);
4066
4067         /* log for looking forward */
4068         for (i = 1; i < ext_buf_cnt; i++) {
4069                 if (nemb_tp == nemb_mse)
4070                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4071                                 "2951 SLI_CONFIG(mse), buf[%d]-length:%d\n",
4072                                 i, sli_cfg_mbx->un.sli_config_emb0_subsys.
4073                                 mse[i].buf_len);
4074                 else
4075                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4076                                 "2952 SLI_CONFIG(hbd), buf[%d]-length:%d\n",
4077                                 i, bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4078                                 &sli_cfg_mbx->un.sli_config_emb1_subsys.
4079                                 hbd[i]));
4080         }
4081
4082         /* multi-buffer handling context */
4083         phba->mbox_ext_buf_ctx.nembType = nemb_tp;
4084         phba->mbox_ext_buf_ctx.mboxType = mbox_wr;
4085         phba->mbox_ext_buf_ctx.numBuf = ext_buf_cnt;
4086         phba->mbox_ext_buf_ctx.mbxTag = mbox_req->extMboxTag;
4087         phba->mbox_ext_buf_ctx.seqNum = mbox_req->extSeqNum;
4088         phba->mbox_ext_buf_ctx.mbx_dmabuf = dmabuf;
4089
4090         if (ext_buf_cnt == 1) {
4091                 /* bsg tracking structure */
4092                 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4093                 if (!dd_data) {
4094                         rc = -ENOMEM;
4095                         goto job_error;
4096                 }
4097
4098                 /* mailbox command structure for base driver */
4099                 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4100                 if (!pmboxq) {
4101                         rc = -ENOMEM;
4102                         goto job_error;
4103                 }
4104                 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4105                 pmb = &pmboxq->u.mb;
4106                 mbx = (uint8_t *)dmabuf->virt;
4107                 memcpy(pmb, mbx, sizeof(*pmb));
4108                 pmb->mbxOwner = OWN_HOST;
4109                 pmboxq->vport = phba->pport;
4110
4111                 /* callback for multi-buffer read mailbox command */
4112                 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4113
4114                 /* context fields to callback function */
4115                 pmboxq->ctx_buf = dd_data;
4116                 dd_data->type = TYPE_MBOX;
4117                 dd_data->set_job = job;
4118                 dd_data->context_un.mbox.pmboxq = pmboxq;
4119                 dd_data->context_un.mbox.mb = (MAILBOX_t *)mbx;
4120                 job->dd_data = dd_data;
4121
4122                 /* state change */
4123
4124                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4125                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4126                 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4127                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4128                                         "2955 Issued SLI_CONFIG ext-buffer "
4129                                         "mailbox command, rc:x%x\n", rc);
4130                         return SLI_CONFIG_HANDLED;
4131                 }
4132                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4133                                 "2956 Failed to issue SLI_CONFIG ext-buffer "
4134                                 "mailbox command, rc:x%x\n", rc);
4135                 rc = -EPIPE;
4136                 goto job_error;
4137         }
4138
4139         /* wait for additional external buffers */
4140
4141         bsg_reply->result = 0;
4142         bsg_job_done(job, bsg_reply->result,
4143                        bsg_reply->reply_payload_rcv_len);
4144         return SLI_CONFIG_HANDLED;
4145
4146 job_error:
4147         if (pmboxq)
4148                 mempool_free(pmboxq, phba->mbox_mem_pool);
4149         kfree(dd_data);
4150
4151         return rc;
4152 }
4153
4154 /**
4155  * lpfc_bsg_handle_sli_cfg_mbox - handle sli-cfg mailbox cmd with ext buffer
4156  * @phba: Pointer to HBA context object.
4157  * @job: Pointer to the job object.
4158  * @dmabuf: Pointer to a DMA buffer descriptor.
4159  *
4160  * This routine handles SLI_CONFIG (0x9B) mailbox command with non-embedded
4161  * external buffers, including both 0x9B with non-embedded MSEs and 0x9B
4162  * with embedded subsystem 0x1 and opcodes with external HBDs.
4163  **/
4164 static int
4165 lpfc_bsg_handle_sli_cfg_mbox(struct lpfc_hba *phba, struct bsg_job *job,
4166                              struct lpfc_dmabuf *dmabuf)
4167 {
4168         struct lpfc_sli_config_mbox *sli_cfg_mbx;
4169         uint32_t subsys;
4170         uint32_t opcode;
4171         int rc = SLI_CONFIG_NOT_HANDLED;
4172
4173         /* state change on new multi-buffer pass-through mailbox command */
4174         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_HOST;
4175
4176         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)dmabuf->virt;
4177
4178         if (!bsg_bf_get(lpfc_mbox_hdr_emb,
4179             &sli_cfg_mbx->un.sli_config_emb0_subsys.sli_config_hdr)) {
4180                 subsys = bsg_bf_get(lpfc_emb0_subcmnd_subsys,
4181                                     &sli_cfg_mbx->un.sli_config_emb0_subsys);
4182                 opcode = bsg_bf_get(lpfc_emb0_subcmnd_opcode,
4183                                     &sli_cfg_mbx->un.sli_config_emb0_subsys);
4184                 if (subsys == SLI_CONFIG_SUBSYS_FCOE) {
4185                         switch (opcode) {
4186                         case FCOE_OPCODE_READ_FCF:
4187                         case FCOE_OPCODE_GET_DPORT_RESULTS:
4188                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4189                                                 "2957 Handled SLI_CONFIG "
4190                                                 "subsys_fcoe, opcode:x%x\n",
4191                                                 opcode);
4192                                 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4193                                                         nemb_mse, dmabuf);
4194                                 break;
4195                         case FCOE_OPCODE_ADD_FCF:
4196                         case FCOE_OPCODE_SET_DPORT_MODE:
4197                         case LPFC_MBOX_OPCODE_FCOE_LINK_DIAG_STATE:
4198                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4199                                                 "2958 Handled SLI_CONFIG "
4200                                                 "subsys_fcoe, opcode:x%x\n",
4201                                                 opcode);
4202                                 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4203                                                         nemb_mse, dmabuf);
4204                                 break;
4205                         default:
4206                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4207                                                 "2959 Reject SLI_CONFIG "
4208                                                 "subsys_fcoe, opcode:x%x\n",
4209                                                 opcode);
4210                                 rc = -EPERM;
4211                                 break;
4212                         }
4213                 } else if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4214                         switch (opcode) {
4215                         case COMN_OPCODE_GET_CNTL_ADDL_ATTRIBUTES:
4216                         case COMN_OPCODE_GET_CNTL_ATTRIBUTES:
4217                         case COMN_OPCODE_GET_PROFILE_CONFIG:
4218                         case COMN_OPCODE_SET_FEATURES:
4219                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4220                                                 "3106 Handled SLI_CONFIG "
4221                                                 "subsys_comn, opcode:x%x\n",
4222                                                 opcode);
4223                                 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4224                                                         nemb_mse, dmabuf);
4225                                 break;
4226                         default:
4227                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4228                                                 "3107 Reject SLI_CONFIG "
4229                                                 "subsys_comn, opcode:x%x\n",
4230                                                 opcode);
4231                                 rc = -EPERM;
4232                                 break;
4233                         }
4234                 } else {
4235                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4236                                         "2977 Reject SLI_CONFIG "
4237                                         "subsys:x%d, opcode:x%x\n",
4238                                         subsys, opcode);
4239                         rc = -EPERM;
4240                 }
4241         } else {
4242                 subsys = bsg_bf_get(lpfc_emb1_subcmnd_subsys,
4243                                     &sli_cfg_mbx->un.sli_config_emb1_subsys);
4244                 opcode = bsg_bf_get(lpfc_emb1_subcmnd_opcode,
4245                                     &sli_cfg_mbx->un.sli_config_emb1_subsys);
4246                 if (subsys == SLI_CONFIG_SUBSYS_COMN) {
4247                         switch (opcode) {
4248                         case COMN_OPCODE_READ_OBJECT:
4249                         case COMN_OPCODE_READ_OBJECT_LIST:
4250                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4251                                                 "2960 Handled SLI_CONFIG "
4252                                                 "subsys_comn, opcode:x%x\n",
4253                                                 opcode);
4254                                 rc = lpfc_bsg_sli_cfg_read_cmd_ext(phba, job,
4255                                                         nemb_hbd, dmabuf);
4256                                 break;
4257                         case COMN_OPCODE_WRITE_OBJECT:
4258                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4259                                                 "2961 Handled SLI_CONFIG "
4260                                                 "subsys_comn, opcode:x%x\n",
4261                                                 opcode);
4262                                 rc = lpfc_bsg_sli_cfg_write_cmd_ext(phba, job,
4263                                                         nemb_hbd, dmabuf);
4264                                 break;
4265                         default:
4266                                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4267                                                 "2962 Not handled SLI_CONFIG "
4268                                                 "subsys_comn, opcode:x%x\n",
4269                                                 opcode);
4270                                 rc = SLI_CONFIG_NOT_HANDLED;
4271                                 break;
4272                         }
4273                 } else {
4274                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4275                                         "2978 Not handled SLI_CONFIG "
4276                                         "subsys:x%d, opcode:x%x\n",
4277                                         subsys, opcode);
4278                         rc = SLI_CONFIG_NOT_HANDLED;
4279                 }
4280         }
4281
4282         /* state reset on not handled new multi-buffer mailbox command */
4283         if (rc != SLI_CONFIG_HANDLED)
4284                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_IDLE;
4285
4286         return rc;
4287 }
4288
4289 /**
4290  * lpfc_bsg_mbox_ext_abort - request to abort mbox command with ext buffers
4291  * @phba: Pointer to HBA context object.
4292  *
4293  * This routine is for requesting to abort a pass-through mailbox command with
4294  * multiple external buffers due to error condition.
4295  **/
4296 static void
4297 lpfc_bsg_mbox_ext_abort(struct lpfc_hba *phba)
4298 {
4299         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
4300                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
4301         else
4302                 lpfc_bsg_mbox_ext_session_reset(phba);
4303         return;
4304 }
4305
4306 /**
4307  * lpfc_bsg_read_ebuf_get - get the next mailbox read external buffer
4308  * @phba: Pointer to HBA context object.
4309  * @job: Pointer to the job object.
4310  *
4311  * This routine extracts the next mailbox read external buffer back to
4312  * user space through BSG.
4313  **/
4314 static int
4315 lpfc_bsg_read_ebuf_get(struct lpfc_hba *phba, struct bsg_job *job)
4316 {
4317         struct fc_bsg_reply *bsg_reply = job->reply;
4318         struct lpfc_sli_config_mbox *sli_cfg_mbx;
4319         struct lpfc_dmabuf *dmabuf;
4320         uint8_t *pbuf;
4321         uint32_t size;
4322         uint32_t index;
4323
4324         index = phba->mbox_ext_buf_ctx.seqNum;
4325         phba->mbox_ext_buf_ctx.seqNum++;
4326
4327         sli_cfg_mbx = (struct lpfc_sli_config_mbox *)
4328                         phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4329
4330         if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4331                 size = bsg_bf_get(lpfc_mbox_sli_config_mse_len,
4332                         &sli_cfg_mbx->un.sli_config_emb0_subsys.mse[index]);
4333                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4334                                 "2963 SLI_CONFIG (mse) ext-buffer rd get "
4335                                 "buffer[%d], size:%d\n", index, size);
4336         } else {
4337                 size = bsg_bf_get(lpfc_mbox_sli_config_ecmn_hbd_len,
4338                         &sli_cfg_mbx->un.sli_config_emb1_subsys.hbd[index]);
4339                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4340                                 "2964 SLI_CONFIG (hbd) ext-buffer rd get "
4341                                 "buffer[%d], size:%d\n", index, size);
4342         }
4343         if (list_empty(&phba->mbox_ext_buf_ctx.ext_dmabuf_list))
4344                 return -EPIPE;
4345         dmabuf = list_first_entry(&phba->mbox_ext_buf_ctx.ext_dmabuf_list,
4346                                   struct lpfc_dmabuf, list);
4347         list_del_init(&dmabuf->list);
4348
4349         /* after dma buffer descriptor setup */
4350         lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4351                                         mbox_rd, dma_ebuf, sta_pos_addr,
4352                                         dmabuf, index);
4353
4354         pbuf = (uint8_t *)dmabuf->virt;
4355         bsg_reply->reply_payload_rcv_len =
4356                 sg_copy_from_buffer(job->reply_payload.sg_list,
4357                                     job->reply_payload.sg_cnt,
4358                                     pbuf, size);
4359
4360         lpfc_bsg_dma_page_free(phba, dmabuf);
4361
4362         if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4363                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4364                                 "2965 SLI_CONFIG (hbd) ext-buffer rd mbox "
4365                                 "command session done\n");
4366                 lpfc_bsg_mbox_ext_session_reset(phba);
4367         }
4368
4369         bsg_reply->result = 0;
4370         bsg_job_done(job, bsg_reply->result,
4371                        bsg_reply->reply_payload_rcv_len);
4372
4373         return SLI_CONFIG_HANDLED;
4374 }
4375
4376 /**
4377  * lpfc_bsg_write_ebuf_set - set the next mailbox write external buffer
4378  * @phba: Pointer to HBA context object.
4379  * @job: Pointer to the job object.
4380  * @dmabuf: Pointer to a DMA buffer descriptor.
4381  *
4382  * This routine sets up the next mailbox read external buffer obtained
4383  * from user space through BSG.
4384  **/
4385 static int
4386 lpfc_bsg_write_ebuf_set(struct lpfc_hba *phba, struct bsg_job *job,
4387                         struct lpfc_dmabuf *dmabuf)
4388 {
4389         struct fc_bsg_reply *bsg_reply = job->reply;
4390         struct bsg_job_data *dd_data = NULL;
4391         LPFC_MBOXQ_t *pmboxq = NULL;
4392         MAILBOX_t *pmb;
4393         enum nemb_type nemb_tp;
4394         uint8_t *pbuf;
4395         uint32_t size;
4396         uint32_t index;
4397         int rc;
4398
4399         index = phba->mbox_ext_buf_ctx.seqNum;
4400         phba->mbox_ext_buf_ctx.seqNum++;
4401         nemb_tp = phba->mbox_ext_buf_ctx.nembType;
4402
4403         pbuf = (uint8_t *)dmabuf->virt;
4404         size = job->request_payload.payload_len;
4405         sg_copy_to_buffer(job->request_payload.sg_list,
4406                           job->request_payload.sg_cnt,
4407                           pbuf, size);
4408
4409         if (phba->mbox_ext_buf_ctx.nembType == nemb_mse) {
4410                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4411                                 "2966 SLI_CONFIG (mse) ext-buffer wr set "
4412                                 "buffer[%d], size:%d\n",
4413                                 phba->mbox_ext_buf_ctx.seqNum, size);
4414
4415         } else {
4416                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4417                                 "2967 SLI_CONFIG (hbd) ext-buffer wr set "
4418                                 "buffer[%d], size:%d\n",
4419                                 phba->mbox_ext_buf_ctx.seqNum, size);
4420
4421         }
4422
4423         /* set up external buffer descriptor and add to external buffer list */
4424         lpfc_bsg_sli_cfg_dma_desc_setup(phba, nemb_tp, index,
4425                                         phba->mbox_ext_buf_ctx.mbx_dmabuf,
4426                                         dmabuf);
4427         list_add_tail(&dmabuf->list, &phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4428
4429         /* after write dma buffer */
4430         lpfc_idiag_mbxacc_dump_bsg_mbox(phba, phba->mbox_ext_buf_ctx.nembType,
4431                                         mbox_wr, dma_ebuf, sta_pos_addr,
4432                                         dmabuf, index);
4433
4434         if (phba->mbox_ext_buf_ctx.seqNum == phba->mbox_ext_buf_ctx.numBuf) {
4435                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4436                                 "2968 SLI_CONFIG ext-buffer wr all %d "
4437                                 "ebuffers received\n",
4438                                 phba->mbox_ext_buf_ctx.numBuf);
4439
4440                 dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4441                 if (!dd_data) {
4442                         rc = -ENOMEM;
4443                         goto job_error;
4444                 }
4445
4446                 /* mailbox command structure for base driver */
4447                 pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4448                 if (!pmboxq) {
4449                         rc = -ENOMEM;
4450                         goto job_error;
4451                 }
4452                 memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4453                 pbuf = (uint8_t *)phba->mbox_ext_buf_ctx.mbx_dmabuf->virt;
4454                 pmb = &pmboxq->u.mb;
4455                 memcpy(pmb, pbuf, sizeof(*pmb));
4456                 pmb->mbxOwner = OWN_HOST;
4457                 pmboxq->vport = phba->pport;
4458
4459                 /* callback for multi-buffer write mailbox command */
4460                 pmboxq->mbox_cmpl = lpfc_bsg_issue_write_mbox_ext_cmpl;
4461
4462                 /* context fields to callback function */
4463                 pmboxq->ctx_buf = dd_data;
4464                 dd_data->type = TYPE_MBOX;
4465                 dd_data->set_job = job;
4466                 dd_data->context_un.mbox.pmboxq = pmboxq;
4467                 dd_data->context_un.mbox.mb = (MAILBOX_t *)pbuf;
4468                 job->dd_data = dd_data;
4469
4470                 /* state change */
4471                 phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_PORT;
4472
4473                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4474                 if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY)) {
4475                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4476                                         "2969 Issued SLI_CONFIG ext-buffer "
4477                                         "mailbox command, rc:x%x\n", rc);
4478                         return SLI_CONFIG_HANDLED;
4479                 }
4480                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4481                                 "2970 Failed to issue SLI_CONFIG ext-buffer "
4482                                 "mailbox command, rc:x%x\n", rc);
4483                 rc = -EPIPE;
4484                 goto job_error;
4485         }
4486
4487         /* wait for additional external buffers */
4488         bsg_reply->result = 0;
4489         bsg_job_done(job, bsg_reply->result,
4490                        bsg_reply->reply_payload_rcv_len);
4491         return SLI_CONFIG_HANDLED;
4492
4493 job_error:
4494         if (pmboxq)
4495                 mempool_free(pmboxq, phba->mbox_mem_pool);
4496         lpfc_bsg_dma_page_free(phba, dmabuf);
4497         kfree(dd_data);
4498
4499         return rc;
4500 }
4501
4502 /**
4503  * lpfc_bsg_handle_sli_cfg_ebuf - handle ext buffer with sli-cfg mailbox cmd
4504  * @phba: Pointer to HBA context object.
4505  * @job: Pointer to the job object.
4506  * @dmabuf: Pointer to a DMA buffer descriptor.
4507  *
4508  * This routine handles the external buffer with SLI_CONFIG (0x9B) mailbox
4509  * command with multiple non-embedded external buffers.
4510  **/
4511 static int
4512 lpfc_bsg_handle_sli_cfg_ebuf(struct lpfc_hba *phba, struct bsg_job *job,
4513                              struct lpfc_dmabuf *dmabuf)
4514 {
4515         int rc;
4516
4517         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4518                         "2971 SLI_CONFIG buffer (type:x%x)\n",
4519                         phba->mbox_ext_buf_ctx.mboxType);
4520
4521         if (phba->mbox_ext_buf_ctx.mboxType == mbox_rd) {
4522                 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_DONE) {
4523                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4524                                         "2972 SLI_CONFIG rd buffer state "
4525                                         "mismatch:x%x\n",
4526                                         phba->mbox_ext_buf_ctx.state);
4527                         lpfc_bsg_mbox_ext_abort(phba);
4528                         return -EPIPE;
4529                 }
4530                 rc = lpfc_bsg_read_ebuf_get(phba, job);
4531                 if (rc == SLI_CONFIG_HANDLED)
4532                         lpfc_bsg_dma_page_free(phba, dmabuf);
4533         } else { /* phba->mbox_ext_buf_ctx.mboxType == mbox_wr */
4534                 if (phba->mbox_ext_buf_ctx.state != LPFC_BSG_MBOX_HOST) {
4535                         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4536                                         "2973 SLI_CONFIG wr buffer state "
4537                                         "mismatch:x%x\n",
4538                                         phba->mbox_ext_buf_ctx.state);
4539                         lpfc_bsg_mbox_ext_abort(phba);
4540                         return -EPIPE;
4541                 }
4542                 rc = lpfc_bsg_write_ebuf_set(phba, job, dmabuf);
4543         }
4544         return rc;
4545 }
4546
4547 /**
4548  * lpfc_bsg_handle_sli_cfg_ext - handle sli-cfg mailbox with external buffer
4549  * @phba: Pointer to HBA context object.
4550  * @job: Pointer to the job object.
4551  * @dmabuf: Pointer to a DMA buffer descriptor.
4552  *
4553  * This routine checks and handles non-embedded multi-buffer SLI_CONFIG
4554  * (0x9B) mailbox commands and external buffers.
4555  **/
4556 static int
4557 lpfc_bsg_handle_sli_cfg_ext(struct lpfc_hba *phba, struct bsg_job *job,
4558                             struct lpfc_dmabuf *dmabuf)
4559 {
4560         struct fc_bsg_request *bsg_request = job->request;
4561         struct dfc_mbox_req *mbox_req;
4562         int rc = SLI_CONFIG_NOT_HANDLED;
4563
4564         mbox_req =
4565            (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4566
4567         /* mbox command with/without single external buffer */
4568         if (mbox_req->extMboxTag == 0 && mbox_req->extSeqNum == 0)
4569                 return rc;
4570
4571         /* mbox command and first external buffer */
4572         if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_IDLE) {
4573                 if (mbox_req->extSeqNum == 1) {
4574                         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4575                                         "2974 SLI_CONFIG mailbox: tag:%d, "
4576                                         "seq:%d\n", mbox_req->extMboxTag,
4577                                         mbox_req->extSeqNum);
4578                         rc = lpfc_bsg_handle_sli_cfg_mbox(phba, job, dmabuf);
4579                         return rc;
4580                 } else
4581                         goto sli_cfg_ext_error;
4582         }
4583
4584         /*
4585          * handle additional external buffers
4586          */
4587
4588         /* check broken pipe conditions */
4589         if (mbox_req->extMboxTag != phba->mbox_ext_buf_ctx.mbxTag)
4590                 goto sli_cfg_ext_error;
4591         if (mbox_req->extSeqNum > phba->mbox_ext_buf_ctx.numBuf)
4592                 goto sli_cfg_ext_error;
4593         if (mbox_req->extSeqNum != phba->mbox_ext_buf_ctx.seqNum + 1)
4594                 goto sli_cfg_ext_error;
4595
4596         lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4597                         "2975 SLI_CONFIG mailbox external buffer: "
4598                         "extSta:x%x, tag:%d, seq:%d\n",
4599                         phba->mbox_ext_buf_ctx.state, mbox_req->extMboxTag,
4600                         mbox_req->extSeqNum);
4601         rc = lpfc_bsg_handle_sli_cfg_ebuf(phba, job, dmabuf);
4602         return rc;
4603
4604 sli_cfg_ext_error:
4605         /* all other cases, broken pipe */
4606         lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
4607                         "2976 SLI_CONFIG mailbox broken pipe: "
4608                         "ctxSta:x%x, ctxNumBuf:%d "
4609                         "ctxTag:%d, ctxSeq:%d, tag:%d, seq:%d\n",
4610                         phba->mbox_ext_buf_ctx.state,
4611                         phba->mbox_ext_buf_ctx.numBuf,
4612                         phba->mbox_ext_buf_ctx.mbxTag,
4613                         phba->mbox_ext_buf_ctx.seqNum,
4614                         mbox_req->extMboxTag, mbox_req->extSeqNum);
4615
4616         lpfc_bsg_mbox_ext_session_reset(phba);
4617
4618         return -EPIPE;
4619 }
4620
4621 /**
4622  * lpfc_bsg_issue_mbox - issues a mailbox command on behalf of an app
4623  * @phba: Pointer to HBA context object.
4624  * @job: Pointer to the job object.
4625  * @vport: Pointer to a vport object.
4626  *
4627  * Allocate a tracking object, mailbox command memory, get a mailbox
4628  * from the mailbox pool, copy the caller mailbox command.
4629  *
4630  * If offline and the sli is active we need to poll for the command (port is
4631  * being reset) and complete the job, otherwise issue the mailbox command and
4632  * let our completion handler finish the command.
4633  **/
4634 static int
4635 lpfc_bsg_issue_mbox(struct lpfc_hba *phba, struct bsg_job *job,
4636         struct lpfc_vport *vport)
4637 {
4638         struct fc_bsg_request *bsg_request = job->request;
4639         struct fc_bsg_reply *bsg_reply = job->reply;
4640         LPFC_MBOXQ_t *pmboxq = NULL; /* internal mailbox queue */
4641         MAILBOX_t *pmb; /* shortcut to the pmboxq mailbox */
4642         /* a 4k buffer to hold the mb and extended data from/to the bsg */
4643         uint8_t *pmbx = NULL;
4644         struct bsg_job_data *dd_data = NULL; /* bsg data tracking structure */
4645         struct lpfc_dmabuf *dmabuf = NULL;
4646         struct dfc_mbox_req *mbox_req;
4647         struct READ_EVENT_LOG_VAR *rdEventLog;
4648         uint32_t transmit_length, receive_length, mode;
4649         struct lpfc_mbx_sli4_config *sli4_config;
4650         struct lpfc_mbx_nembed_cmd *nembed_sge;
4651         struct ulp_bde64 *bde;
4652         uint8_t *ext = NULL;
4653         int rc = 0;
4654         uint8_t *from;
4655         uint32_t size;
4656
4657         /* in case no data is transferred */
4658         bsg_reply->reply_payload_rcv_len = 0;
4659
4660         /* sanity check to protect driver */
4661         if (job->reply_payload.payload_len > BSG_MBOX_SIZE ||
4662             job->request_payload.payload_len > BSG_MBOX_SIZE) {
4663                 rc = -ERANGE;
4664                 goto job_done;
4665         }
4666
4667         /*
4668          * Don't allow mailbox commands to be sent when blocked or when in
4669          * the middle of discovery
4670          */
4671         if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
4672                 rc = -EAGAIN;
4673                 goto job_done;
4674         }
4675
4676         mbox_req =
4677             (struct dfc_mbox_req *)bsg_request->rqst_data.h_vendor.vendor_cmd;
4678
4679         /* check if requested extended data lengths are valid */
4680         if ((mbox_req->inExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t)) ||
4681             (mbox_req->outExtWLen > BSG_MBOX_SIZE/sizeof(uint32_t))) {
4682                 rc = -ERANGE;
4683                 goto job_done;
4684         }
4685
4686         dmabuf = lpfc_bsg_dma_page_alloc(phba);
4687         if (!dmabuf || !dmabuf->virt) {
4688                 rc = -ENOMEM;
4689                 goto job_done;
4690         }
4691
4692         /* Get the mailbox command or external buffer from BSG */
4693         pmbx = (uint8_t *)dmabuf->virt;
4694         size = job->request_payload.payload_len;
4695         sg_copy_to_buffer(job->request_payload.sg_list,
4696                           job->request_payload.sg_cnt, pmbx, size);
4697
4698         /* Handle possible SLI_CONFIG with non-embedded payloads */
4699         if (phba->sli_rev == LPFC_SLI_REV4) {
4700                 rc = lpfc_bsg_handle_sli_cfg_ext(phba, job, dmabuf);
4701                 if (rc == SLI_CONFIG_HANDLED)
4702                         goto job_cont;
4703                 if (rc)
4704                         goto job_done;
4705                 /* SLI_CONFIG_NOT_HANDLED for other mailbox commands */
4706         }
4707
4708         rc = lpfc_bsg_check_cmd_access(phba, (MAILBOX_t *)pmbx, vport);
4709         if (rc != 0)
4710                 goto job_done; /* must be negative */
4711
4712         /* allocate our bsg tracking structure */
4713         dd_data = kmalloc(sizeof(struct bsg_job_data), GFP_KERNEL);
4714         if (!dd_data) {
4715                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4716                                 "2727 Failed allocation of dd_data\n");
4717                 rc = -ENOMEM;
4718                 goto job_done;
4719         }
4720
4721         pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4722         if (!pmboxq) {
4723                 rc = -ENOMEM;
4724                 goto job_done;
4725         }
4726         memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
4727
4728         pmb = &pmboxq->u.mb;
4729         memcpy(pmb, pmbx, sizeof(*pmb));
4730         pmb->mbxOwner = OWN_HOST;
4731         pmboxq->vport = vport;
4732
4733         /* If HBA encountered an error attention, allow only DUMP
4734          * or RESTART mailbox commands until the HBA is restarted.
4735          */
4736         if (phba->pport->stopped &&
4737             pmb->mbxCommand != MBX_DUMP_MEMORY &&
4738             pmb->mbxCommand != MBX_RESTART &&
4739             pmb->mbxCommand != MBX_WRITE_VPARMS &&
4740             pmb->mbxCommand != MBX_WRITE_WWN)
4741                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
4742                                 "2797 mbox: Issued mailbox cmd "
4743                                 "0x%x while in stopped state.\n",
4744                                 pmb->mbxCommand);
4745
4746         /* extended mailbox commands will need an extended buffer */
4747         if (mbox_req->inExtWLen || mbox_req->outExtWLen) {
4748                 from = pmbx;
4749                 ext = from + sizeof(MAILBOX_t);
4750                 pmboxq->ctx_buf = ext;
4751                 pmboxq->in_ext_byte_len =
4752                         mbox_req->inExtWLen * sizeof(uint32_t);
4753                 pmboxq->out_ext_byte_len =
4754                         mbox_req->outExtWLen * sizeof(uint32_t);
4755                 pmboxq->mbox_offset_word = mbox_req->mbOffset;
4756         }
4757
4758         /* biu diag will need a kernel buffer to transfer the data
4759          * allocate our own buffer and setup the mailbox command to
4760          * use ours
4761          */
4762         if (pmb->mbxCommand == MBX_RUN_BIU_DIAG64) {
4763                 transmit_length = pmb->un.varWords[1];
4764                 receive_length = pmb->un.varWords[4];
4765                 /* transmit length cannot be greater than receive length or
4766                  * mailbox extension size
4767                  */
4768                 if ((transmit_length > receive_length) ||
4769                         (transmit_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4770                         rc = -ERANGE;
4771                         goto job_done;
4772                 }
4773                 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrHigh =
4774                         putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t));
4775                 pmb->un.varBIUdiag.un.s2.xmit_bde64.addrLow =
4776                         putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t));
4777
4778                 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrHigh =
4779                         putPaddrHigh(dmabuf->phys + sizeof(MAILBOX_t)
4780                           + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4781                 pmb->un.varBIUdiag.un.s2.rcv_bde64.addrLow =
4782                         putPaddrLow(dmabuf->phys + sizeof(MAILBOX_t)
4783                           + pmb->un.varBIUdiag.un.s2.xmit_bde64.tus.f.bdeSize);
4784         } else if (pmb->mbxCommand == MBX_READ_EVENT_LOG) {
4785                 rdEventLog = &pmb->un.varRdEventLog;
4786                 receive_length = rdEventLog->rcv_bde64.tus.f.bdeSize;
4787                 mode = bf_get(lpfc_event_log, rdEventLog);
4788
4789                 /* receive length cannot be greater than mailbox
4790                  * extension size
4791                  */
4792                 if (receive_length > BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4793                         rc = -ERANGE;
4794                         goto job_done;
4795                 }
4796
4797                 /* mode zero uses a bde like biu diags command */
4798                 if (mode == 0) {
4799                         pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4800                                                         + sizeof(MAILBOX_t));
4801                         pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4802                                                         + sizeof(MAILBOX_t));
4803                 }
4804         } else if (phba->sli_rev == LPFC_SLI_REV4) {
4805                 /* Let type 4 (well known data) through because the data is
4806                  * returned in varwords[4-8]
4807                  * otherwise check the recieve length and fetch the buffer addr
4808                  */
4809                 if ((pmb->mbxCommand == MBX_DUMP_MEMORY) &&
4810                         (pmb->un.varDmp.type != DMP_WELL_KNOWN)) {
4811                         /* rebuild the command for sli4 using our own buffers
4812                         * like we do for biu diags
4813                         */
4814                         receive_length = pmb->un.varWords[2];
4815                         /* receive length cannot be greater than mailbox
4816                          * extension size
4817                          */
4818                         if (receive_length == 0) {
4819                                 rc = -ERANGE;
4820                                 goto job_done;
4821                         }
4822                         pmb->un.varWords[3] = putPaddrLow(dmabuf->phys
4823                                                 + sizeof(MAILBOX_t));
4824                         pmb->un.varWords[4] = putPaddrHigh(dmabuf->phys
4825                                                 + sizeof(MAILBOX_t));
4826                 } else if ((pmb->mbxCommand == MBX_UPDATE_CFG) &&
4827                         pmb->un.varUpdateCfg.co) {
4828                         bde = (struct ulp_bde64 *)&pmb->un.varWords[4];
4829
4830                         /* bde size cannot be greater than mailbox ext size */
4831                         if (bde->tus.f.bdeSize >
4832                             BSG_MBOX_SIZE - sizeof(MAILBOX_t)) {
4833                                 rc = -ERANGE;
4834                                 goto job_done;
4835                         }
4836                         bde->addrHigh = putPaddrHigh(dmabuf->phys
4837                                                 + sizeof(MAILBOX_t));
4838                         bde->addrLow = putPaddrLow(dmabuf->phys
4839                                                 + sizeof(MAILBOX_t));
4840                 } else if (pmb->mbxCommand == MBX_SLI4_CONFIG) {
4841                         /* Handling non-embedded SLI_CONFIG mailbox command */
4842                         sli4_config = &pmboxq->u.mqe.un.sli4_config;
4843                         if (!bf_get(lpfc_mbox_hdr_emb,
4844                             &sli4_config->header.cfg_mhdr)) {
4845                                 /* rebuild the command for sli4 using our
4846                                  * own buffers like we do for biu diags
4847                                  */
4848                                 nembed_sge = (struct lpfc_mbx_nembed_cmd *)
4849                                                 &pmb->un.varWords[0];
4850                                 receive_length = nembed_sge->sge[0].length;
4851
4852                                 /* receive length cannot be greater than
4853                                  * mailbox extension size
4854                                  */
4855                                 if ((receive_length == 0) ||
4856                                     (receive_length >
4857                                      BSG_MBOX_SIZE - sizeof(MAILBOX_t))) {
4858                                         rc = -ERANGE;
4859                                         goto job_done;
4860                                 }
4861
4862                                 nembed_sge->sge[0].pa_hi =
4863                                                 putPaddrHigh(dmabuf->phys
4864                                                    + sizeof(MAILBOX_t));
4865                                 nembed_sge->sge[0].pa_lo =
4866                                                 putPaddrLow(dmabuf->phys
4867                                                    + sizeof(MAILBOX_t));
4868                         }
4869                 }
4870         }
4871
4872         dd_data->context_un.mbox.dmabuffers = dmabuf;
4873
4874         /* setup wake call as IOCB callback */
4875         pmboxq->mbox_cmpl = lpfc_bsg_issue_mbox_cmpl;
4876
4877         /* setup context field to pass wait_queue pointer to wake function */
4878         pmboxq->ctx_ndlp = dd_data;
4879         dd_data->type = TYPE_MBOX;
4880         dd_data->set_job = job;
4881         dd_data->context_un.mbox.pmboxq = pmboxq;
4882         dd_data->context_un.mbox.mb = (MAILBOX_t *)pmbx;
4883         dd_data->context_un.mbox.ext = ext;
4884         dd_data->context_un.mbox.mbOffset = mbox_req->mbOffset;
4885         dd_data->context_un.mbox.inExtWLen = mbox_req->inExtWLen;
4886         dd_data->context_un.mbox.outExtWLen = mbox_req->outExtWLen;
4887         job->dd_data = dd_data;
4888
4889         if (test_bit(FC_OFFLINE_MODE, &vport->fc_flag) ||
4890             (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE))) {
4891                 rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
4892                 if (rc != MBX_SUCCESS) {
4893                         rc = (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
4894                         goto job_done;
4895                 }
4896
4897                 /* job finished, copy the data */
4898                 memcpy(pmbx, pmb, sizeof(*pmb));
4899                 bsg_reply->reply_payload_rcv_len =
4900                         sg_copy_from_buffer(job->reply_payload.sg_list,
4901                                             job->reply_payload.sg_cnt,
4902                                             pmbx, size);
4903                 /* not waiting mbox already done */
4904                 rc = 0;
4905                 goto job_done;
4906         }
4907
4908         rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
4909         if ((rc == MBX_SUCCESS) || (rc == MBX_BUSY))
4910                 return 1; /* job started */
4911
4912 job_done:
4913         /* common exit for error or job completed inline */
4914         if (pmboxq)
4915                 mempool_free(pmboxq, phba->mbox_mem_pool);
4916         lpfc_bsg_dma_page_free(phba, dmabuf);
4917         kfree(dd_data);
4918
4919 job_cont:
4920         return rc;
4921 }
4922
4923 /**
4924  * lpfc_bsg_mbox_cmd - process an fc bsg LPFC_BSG_VENDOR_MBOX command
4925  * @job: MBOX fc_bsg_job for LPFC_BSG_VENDOR_MBOX.
4926  **/
4927 static int
4928 lpfc_bsg_mbox_cmd(struct bsg_job *job)
4929 {
4930         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
4931         struct fc_bsg_request *bsg_request = job->request;
4932         struct fc_bsg_reply *bsg_reply = job->reply;
4933         struct lpfc_hba *phba = vport->phba;
4934         struct dfc_mbox_req *mbox_req;
4935         int rc = 0;
4936
4937         /* mix-and-match backward compatibility */
4938         bsg_reply->reply_payload_rcv_len = 0;
4939         if (job->request_len <
4940             sizeof(struct fc_bsg_request) + sizeof(struct dfc_mbox_req)) {
4941                 lpfc_printf_log(phba, KERN_INFO, LOG_LIBDFC,
4942                                 "2737 Mix-and-match backward compatibility "
4943                                 "between MBOX_REQ old size:%d and "
4944                                 "new request size:%d\n",
4945                                 (int)(job->request_len -
4946                                       sizeof(struct fc_bsg_request)),
4947                                 (int)sizeof(struct dfc_mbox_req));
4948                 mbox_req = (struct dfc_mbox_req *)
4949                                 bsg_request->rqst_data.h_vendor.vendor_cmd;
4950                 mbox_req->extMboxTag = 0;
4951                 mbox_req->extSeqNum = 0;
4952         }
4953
4954         rc = lpfc_bsg_issue_mbox(phba, job, vport);
4955
4956         if (rc == 0) {
4957                 /* job done */
4958                 bsg_reply->result = 0;
4959                 job->dd_data = NULL;
4960                 bsg_job_done(job, bsg_reply->result,
4961                                bsg_reply->reply_payload_rcv_len);
4962         } else if (rc == 1)
4963                 /* job submitted, will complete later*/
4964                 rc = 0; /* return zero, no error */
4965         else {
4966                 /* some error occurred */
4967                 bsg_reply->result = rc;
4968                 job->dd_data = NULL;
4969         }
4970
4971         return rc;
4972 }
4973
4974 static int
4975 lpfc_forced_link_speed(struct bsg_job *job)
4976 {
4977         struct Scsi_Host *shost = fc_bsg_to_shost(job);
4978         struct lpfc_vport *vport = shost_priv(shost);
4979         struct lpfc_hba *phba = vport->phba;
4980         struct fc_bsg_reply *bsg_reply = job->reply;
4981         struct forced_link_speed_support_reply *forced_reply;
4982         int rc = 0;
4983
4984         if (job->request_len <
4985             sizeof(struct fc_bsg_request) +
4986             sizeof(struct get_forced_link_speed_support)) {
4987                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4988                                 "0048 Received FORCED_LINK_SPEED request "
4989                                 "below minimum size\n");
4990                 rc = -EINVAL;
4991                 goto job_error;
4992         }
4993
4994         forced_reply = (struct forced_link_speed_support_reply *)
4995                 bsg_reply->reply_data.vendor_reply.vendor_rsp;
4996
4997         if (job->reply_len < sizeof(*bsg_reply) + sizeof(*forced_reply)) {
4998                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
4999                                 "0049 Received FORCED_LINK_SPEED reply below "
5000                                 "minimum size\n");
5001                 rc = -EINVAL;
5002                 goto job_error;
5003         }
5004
5005         forced_reply->supported = (phba->hba_flag & HBA_FORCED_LINK_SPEED)
5006                                    ? LPFC_FORCED_LINK_SPEED_SUPPORTED
5007                                    : LPFC_FORCED_LINK_SPEED_NOT_SUPPORTED;
5008 job_error:
5009         bsg_reply->result = rc;
5010         if (rc == 0)
5011                 bsg_job_done(job, bsg_reply->result,
5012                                bsg_reply->reply_payload_rcv_len);
5013         return rc;
5014 }
5015
5016 /**
5017  * lpfc_check_fwlog_support: Check FW log support on the adapter
5018  * @phba: Pointer to HBA context object.
5019  *
5020  * Check if FW Logging support by the adapter
5021  **/
5022 int
5023 lpfc_check_fwlog_support(struct lpfc_hba *phba)
5024 {
5025         struct lpfc_ras_fwlog *ras_fwlog = NULL;
5026
5027         ras_fwlog = &phba->ras_fwlog;
5028
5029         if (!ras_fwlog->ras_hwsupport)
5030                 return -EACCES;
5031         else if (!ras_fwlog->ras_enabled)
5032                 return -EPERM;
5033         else
5034                 return 0;
5035 }
5036
5037 /**
5038  * lpfc_bsg_get_ras_config: Get RAS configuration settings
5039  * @job: fc_bsg_job to handle
5040  *
5041  * Get RAS configuration values set.
5042  **/
5043 static int
5044 lpfc_bsg_get_ras_config(struct bsg_job *job)
5045 {
5046         struct Scsi_Host *shost = fc_bsg_to_shost(job);
5047         struct lpfc_vport *vport = shost_priv(shost);
5048         struct fc_bsg_reply *bsg_reply = job->reply;
5049         struct lpfc_hba *phba = vport->phba;
5050         struct lpfc_bsg_get_ras_config_reply *ras_reply;
5051         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5052         int rc = 0;
5053
5054         if (job->request_len <
5055             sizeof(struct fc_bsg_request) +
5056             sizeof(struct lpfc_bsg_ras_req)) {
5057                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5058                                 "6192 FW_LOG request received "
5059                                 "below minimum size\n");
5060                 rc = -EINVAL;
5061                 goto ras_job_error;
5062         }
5063
5064         /* Check FW log status */
5065         rc = lpfc_check_fwlog_support(phba);
5066         if (rc)
5067                 goto ras_job_error;
5068
5069         ras_reply = (struct lpfc_bsg_get_ras_config_reply *)
5070                 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5071
5072         /* Current logging state */
5073         spin_lock_irq(&phba->hbalock);
5074         if (ras_fwlog->state == ACTIVE)
5075                 ras_reply->state = LPFC_RASLOG_STATE_RUNNING;
5076         else
5077                 ras_reply->state = LPFC_RASLOG_STATE_STOPPED;
5078         spin_unlock_irq(&phba->hbalock);
5079
5080         ras_reply->log_level = phba->ras_fwlog.fw_loglevel;
5081         ras_reply->log_buff_sz = phba->cfg_ras_fwlog_buffsize;
5082
5083 ras_job_error:
5084         /* make error code available to userspace */
5085         bsg_reply->result = rc;
5086
5087         /* complete the job back to userspace */
5088         if (!rc)
5089                 bsg_job_done(job, bsg_reply->result,
5090                              bsg_reply->reply_payload_rcv_len);
5091         return rc;
5092 }
5093
5094 /**
5095  * lpfc_bsg_set_ras_config: Set FW logging parameters
5096  * @job: fc_bsg_job to handle
5097  *
5098  * Set log-level parameters for FW-logging in host memory
5099  **/
5100 static int
5101 lpfc_bsg_set_ras_config(struct bsg_job *job)
5102 {
5103         struct Scsi_Host *shost = fc_bsg_to_shost(job);
5104         struct lpfc_vport *vport = shost_priv(shost);
5105         struct lpfc_hba *phba = vport->phba;
5106         struct lpfc_bsg_set_ras_config_req *ras_req;
5107         struct fc_bsg_request *bsg_request = job->request;
5108         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5109         struct fc_bsg_reply *bsg_reply = job->reply;
5110         uint8_t action = 0, log_level = 0;
5111         int rc = 0, action_status = 0;
5112
5113         if (job->request_len <
5114             sizeof(struct fc_bsg_request) +
5115             sizeof(struct lpfc_bsg_set_ras_config_req)) {
5116                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5117                                 "6182 Received RAS_LOG request "
5118                                 "below minimum size\n");
5119                 rc = -EINVAL;
5120                 goto ras_job_error;
5121         }
5122
5123         /* Check FW log status */
5124         rc = lpfc_check_fwlog_support(phba);
5125         if (rc)
5126                 goto ras_job_error;
5127
5128         ras_req = (struct lpfc_bsg_set_ras_config_req *)
5129                 bsg_request->rqst_data.h_vendor.vendor_cmd;
5130         action = ras_req->action;
5131         log_level = ras_req->log_level;
5132
5133         if (action == LPFC_RASACTION_STOP_LOGGING) {
5134                 /* Check if already disabled */
5135                 spin_lock_irq(&phba->hbalock);
5136                 if (ras_fwlog->state != ACTIVE) {
5137                         spin_unlock_irq(&phba->hbalock);
5138                         rc = -ESRCH;
5139                         goto ras_job_error;
5140                 }
5141                 spin_unlock_irq(&phba->hbalock);
5142
5143                 /* Disable logging */
5144                 lpfc_ras_stop_fwlog(phba);
5145         } else {
5146                 /*action = LPFC_RASACTION_START_LOGGING*/
5147
5148                 /* Even though FW-logging is active re-initialize
5149                  * FW-logging with new log-level. Return status
5150                  * "Logging already Running" to caller.
5151                  **/
5152                 spin_lock_irq(&phba->hbalock);
5153                 if (ras_fwlog->state != INACTIVE)
5154                         action_status = -EINPROGRESS;
5155                 spin_unlock_irq(&phba->hbalock);
5156
5157                 /* Enable logging */
5158                 rc = lpfc_sli4_ras_fwlog_init(phba, log_level,
5159                                               LPFC_RAS_ENABLE_LOGGING);
5160                 if (rc) {
5161                         rc = -EINVAL;
5162                         goto ras_job_error;
5163                 }
5164
5165                 /* Check if FW-logging is re-initialized */
5166                 if (action_status == -EINPROGRESS)
5167                         rc = action_status;
5168         }
5169 ras_job_error:
5170         /* make error code available to userspace */
5171         bsg_reply->result = rc;
5172
5173         /* complete the job back to userspace */
5174         if (!rc)
5175                 bsg_job_done(job, bsg_reply->result,
5176                              bsg_reply->reply_payload_rcv_len);
5177
5178         return rc;
5179 }
5180
5181 /**
5182  * lpfc_bsg_get_ras_lwpd: Get log write position data
5183  * @job: fc_bsg_job to handle
5184  *
5185  * Get Offset/Wrap count of the log message written
5186  * in host memory
5187  **/
5188 static int
5189 lpfc_bsg_get_ras_lwpd(struct bsg_job *job)
5190 {
5191         struct Scsi_Host *shost = fc_bsg_to_shost(job);
5192         struct lpfc_vport *vport = shost_priv(shost);
5193         struct lpfc_bsg_get_ras_lwpd *ras_reply;
5194         struct lpfc_hba *phba = vport->phba;
5195         struct lpfc_ras_fwlog *ras_fwlog = &phba->ras_fwlog;
5196         struct fc_bsg_reply *bsg_reply = job->reply;
5197         u32 *lwpd_ptr = NULL;
5198         int rc = 0;
5199
5200         rc = lpfc_check_fwlog_support(phba);
5201         if (rc)
5202                 goto ras_job_error;
5203
5204         if (job->request_len <
5205             sizeof(struct fc_bsg_request) +
5206             sizeof(struct lpfc_bsg_ras_req)) {
5207                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5208                                 "6183 Received RAS_LOG request "
5209                                 "below minimum size\n");
5210                 rc = -EINVAL;
5211                 goto ras_job_error;
5212         }
5213
5214         ras_reply = (struct lpfc_bsg_get_ras_lwpd *)
5215                 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5216
5217         if (!ras_fwlog->lwpd.virt) {
5218                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5219                                 "6193 Restart FW Logging\n");
5220                 rc = -EINVAL;
5221                 goto ras_job_error;
5222         }
5223
5224         /* Get lwpd offset */
5225         lwpd_ptr = (uint32_t *)(ras_fwlog->lwpd.virt);
5226         ras_reply->offset = be32_to_cpu(*lwpd_ptr & 0xffffffff);
5227
5228         /* Get wrap count */
5229         ras_reply->wrap_count = be32_to_cpu(*(++lwpd_ptr) & 0xffffffff);
5230
5231 ras_job_error:
5232         /* make error code available to userspace */
5233         bsg_reply->result = rc;
5234
5235         /* complete the job back to userspace */
5236         if (!rc)
5237                 bsg_job_done(job, bsg_reply->result,
5238                              bsg_reply->reply_payload_rcv_len);
5239
5240         return rc;
5241 }
5242
5243 /**
5244  * lpfc_bsg_get_ras_fwlog: Read FW log
5245  * @job: fc_bsg_job to handle
5246  *
5247  * Copy the FW log into the passed buffer.
5248  **/
5249 static int
5250 lpfc_bsg_get_ras_fwlog(struct bsg_job *job)
5251 {
5252         struct Scsi_Host *shost = fc_bsg_to_shost(job);
5253         struct lpfc_vport *vport = shost_priv(shost);
5254         struct lpfc_hba *phba = vport->phba;
5255         struct fc_bsg_request *bsg_request = job->request;
5256         struct fc_bsg_reply *bsg_reply = job->reply;
5257         struct lpfc_bsg_get_fwlog_req *ras_req;
5258         u32 rd_offset, rd_index, offset;
5259         void *src, *fwlog_buff;
5260         struct lpfc_ras_fwlog *ras_fwlog = NULL;
5261         struct lpfc_dmabuf *dmabuf, *next;
5262         int rc = 0;
5263
5264         ras_fwlog = &phba->ras_fwlog;
5265
5266         rc = lpfc_check_fwlog_support(phba);
5267         if (rc)
5268                 goto ras_job_error;
5269
5270         /* Logging to be stopped before reading */
5271         spin_lock_irq(&phba->hbalock);
5272         if (ras_fwlog->state == ACTIVE) {
5273                 spin_unlock_irq(&phba->hbalock);
5274                 rc = -EINPROGRESS;
5275                 goto ras_job_error;
5276         }
5277         spin_unlock_irq(&phba->hbalock);
5278
5279         if (job->request_len <
5280             sizeof(struct fc_bsg_request) +
5281             sizeof(struct lpfc_bsg_get_fwlog_req)) {
5282                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5283                                 "6184 Received RAS_LOG request "
5284                                 "below minimum size\n");
5285                 rc = -EINVAL;
5286                 goto ras_job_error;
5287         }
5288
5289         ras_req = (struct lpfc_bsg_get_fwlog_req *)
5290                 bsg_request->rqst_data.h_vendor.vendor_cmd;
5291         rd_offset = ras_req->read_offset;
5292
5293         /* Allocate memory to read fw log*/
5294         fwlog_buff = vmalloc(ras_req->read_size);
5295         if (!fwlog_buff) {
5296                 rc = -ENOMEM;
5297                 goto ras_job_error;
5298         }
5299
5300         rd_index = (rd_offset / LPFC_RAS_MAX_ENTRY_SIZE);
5301         offset = (rd_offset % LPFC_RAS_MAX_ENTRY_SIZE);
5302
5303         list_for_each_entry_safe(dmabuf, next,
5304                               &ras_fwlog->fwlog_buff_list, list) {
5305
5306                 if (dmabuf->buffer_tag < rd_index)
5307                         continue;
5308
5309                 src = dmabuf->virt + offset;
5310                 memcpy(fwlog_buff, src, ras_req->read_size);
5311                 break;
5312         }
5313
5314         bsg_reply->reply_payload_rcv_len =
5315                 sg_copy_from_buffer(job->reply_payload.sg_list,
5316                                     job->reply_payload.sg_cnt,
5317                                     fwlog_buff, ras_req->read_size);
5318
5319         vfree(fwlog_buff);
5320
5321 ras_job_error:
5322         bsg_reply->result = rc;
5323         if (!rc)
5324                 bsg_job_done(job, bsg_reply->result,
5325                              bsg_reply->reply_payload_rcv_len);
5326
5327         return rc;
5328 }
5329
5330 static int
5331 lpfc_get_trunk_info(struct bsg_job *job)
5332 {
5333         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5334         struct lpfc_hba *phba = vport->phba;
5335         struct fc_bsg_reply *bsg_reply = job->reply;
5336         struct lpfc_trunk_info *event_reply;
5337         int rc = 0;
5338
5339         if (job->request_len <
5340             sizeof(struct fc_bsg_request) + sizeof(struct get_trunk_info_req)) {
5341                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5342                                 "2744 Received GET TRUNK _INFO request below "
5343                                 "minimum size\n");
5344                 rc = -EINVAL;
5345                 goto job_error;
5346         }
5347
5348         event_reply = (struct lpfc_trunk_info *)
5349                 bsg_reply->reply_data.vendor_reply.vendor_rsp;
5350
5351         if (job->reply_len < sizeof(*bsg_reply) + sizeof(*event_reply)) {
5352                 lpfc_printf_log(phba, KERN_WARNING, LOG_LIBDFC,
5353                                 "2728 Received GET TRUNK _INFO reply below "
5354                                 "minimum size\n");
5355                 rc = -EINVAL;
5356                 goto job_error;
5357         }
5358         if (event_reply == NULL) {
5359                 rc = -EINVAL;
5360                 goto job_error;
5361         }
5362
5363         bsg_bf_set(lpfc_trunk_info_link_status, event_reply,
5364                    (phba->link_state >= LPFC_LINK_UP) ? 1 : 0);
5365
5366         bsg_bf_set(lpfc_trunk_info_trunk_active0, event_reply,
5367                    (phba->trunk_link.link0.state == LPFC_LINK_UP) ? 1 : 0);
5368
5369         bsg_bf_set(lpfc_trunk_info_trunk_active1, event_reply,
5370                    (phba->trunk_link.link1.state == LPFC_LINK_UP) ? 1 : 0);
5371
5372         bsg_bf_set(lpfc_trunk_info_trunk_active2, event_reply,
5373                    (phba->trunk_link.link2.state == LPFC_LINK_UP) ? 1 : 0);
5374
5375         bsg_bf_set(lpfc_trunk_info_trunk_active3, event_reply,
5376                    (phba->trunk_link.link3.state == LPFC_LINK_UP) ? 1 : 0);
5377
5378         bsg_bf_set(lpfc_trunk_info_trunk_config0, event_reply,
5379                    bf_get(lpfc_conf_trunk_port0, &phba->sli4_hba));
5380
5381         bsg_bf_set(lpfc_trunk_info_trunk_config1, event_reply,
5382                    bf_get(lpfc_conf_trunk_port1, &phba->sli4_hba));
5383
5384         bsg_bf_set(lpfc_trunk_info_trunk_config2, event_reply,
5385                    bf_get(lpfc_conf_trunk_port2, &phba->sli4_hba));
5386
5387         bsg_bf_set(lpfc_trunk_info_trunk_config3, event_reply,
5388                    bf_get(lpfc_conf_trunk_port3, &phba->sli4_hba));
5389
5390         event_reply->port_speed = phba->sli4_hba.link_state.speed / 1000;
5391         event_reply->logical_speed =
5392                                 phba->sli4_hba.link_state.logical_speed / 1000;
5393 job_error:
5394         bsg_reply->result = rc;
5395         if (!rc)
5396                 bsg_job_done(job, bsg_reply->result,
5397                              bsg_reply->reply_payload_rcv_len);
5398         return rc;
5399
5400 }
5401
5402 static int
5403 lpfc_get_cgnbuf_info(struct bsg_job *job)
5404 {
5405         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5406         struct lpfc_hba *phba = vport->phba;
5407         struct fc_bsg_request *bsg_request = job->request;
5408         struct fc_bsg_reply *bsg_reply = job->reply;
5409         struct get_cgnbuf_info_req *cgnbuf_req;
5410         struct lpfc_cgn_info *cp;
5411         uint8_t *cgn_buff;
5412         int size, cinfosz;
5413         int  rc = 0;
5414
5415         if (job->request_len < sizeof(struct fc_bsg_request) +
5416             sizeof(struct get_cgnbuf_info_req)) {
5417                 rc = -ENOMEM;
5418                 goto job_exit;
5419         }
5420
5421         if (!phba->sli4_hba.pc_sli4_params.cmf) {
5422                 rc = -ENOENT;
5423                 goto job_exit;
5424         }
5425
5426         if (!phba->cgn_i || !phba->cgn_i->virt) {
5427                 rc = -ENOENT;
5428                 goto job_exit;
5429         }
5430
5431         cp = phba->cgn_i->virt;
5432         if (cp->cgn_info_version < LPFC_CGN_INFO_V3) {
5433                 rc = -EPERM;
5434                 goto job_exit;
5435         }
5436
5437         cgnbuf_req = (struct get_cgnbuf_info_req *)
5438                 bsg_request->rqst_data.h_vendor.vendor_cmd;
5439
5440         /* For reset or size == 0 */
5441         bsg_reply->reply_payload_rcv_len = 0;
5442
5443         if (cgnbuf_req->reset == LPFC_BSG_CGN_RESET_STAT) {
5444                 lpfc_init_congestion_stat(phba);
5445                 goto job_exit;
5446         }
5447
5448         /* We don't want to include the CRC at the end */
5449         cinfosz = sizeof(struct lpfc_cgn_info) - sizeof(uint32_t);
5450
5451         size = cgnbuf_req->read_size;
5452         if (!size)
5453                 goto job_exit;
5454
5455         if (size < cinfosz) {
5456                 /* Just copy back what we can */
5457                 cinfosz = size;
5458                 rc = -E2BIG;
5459         }
5460
5461         /* Allocate memory to read congestion info */
5462         cgn_buff = vmalloc(cinfosz);
5463         if (!cgn_buff) {
5464                 rc = -ENOMEM;
5465                 goto job_exit;
5466         }
5467
5468         memcpy(cgn_buff, cp, cinfosz);
5469
5470         bsg_reply->reply_payload_rcv_len =
5471                 sg_copy_from_buffer(job->reply_payload.sg_list,
5472                                     job->reply_payload.sg_cnt,
5473                                     cgn_buff, cinfosz);
5474
5475         vfree(cgn_buff);
5476
5477 job_exit:
5478         bsg_reply->result = rc;
5479         if (!rc)
5480                 bsg_job_done(job, bsg_reply->result,
5481                              bsg_reply->reply_payload_rcv_len);
5482         else
5483                 lpfc_printf_log(phba, KERN_ERR, LOG_LIBDFC,
5484                                 "2724 GET CGNBUF error: %d\n", rc);
5485         return rc;
5486 }
5487
5488 /**
5489  * lpfc_bsg_hst_vendor - process a vendor-specific fc_bsg_job
5490  * @job: fc_bsg_job to handle
5491  **/
5492 static int
5493 lpfc_bsg_hst_vendor(struct bsg_job *job)
5494 {
5495         struct fc_bsg_request *bsg_request = job->request;
5496         struct fc_bsg_reply *bsg_reply = job->reply;
5497         int command = bsg_request->rqst_data.h_vendor.vendor_cmd[0];
5498         int rc;
5499
5500         switch (command) {
5501         case LPFC_BSG_VENDOR_SET_CT_EVENT:
5502                 rc = lpfc_bsg_hba_set_event(job);
5503                 break;
5504         case LPFC_BSG_VENDOR_GET_CT_EVENT:
5505                 rc = lpfc_bsg_hba_get_event(job);
5506                 break;
5507         case LPFC_BSG_VENDOR_SEND_MGMT_RESP:
5508                 rc = lpfc_bsg_send_mgmt_rsp(job);
5509                 break;
5510         case LPFC_BSG_VENDOR_DIAG_MODE:
5511                 rc = lpfc_bsg_diag_loopback_mode(job);
5512                 break;
5513         case LPFC_BSG_VENDOR_DIAG_MODE_END:
5514                 rc = lpfc_sli4_bsg_diag_mode_end(job);
5515                 break;
5516         case LPFC_BSG_VENDOR_DIAG_RUN_LOOPBACK:
5517                 rc = lpfc_bsg_diag_loopback_run(job);
5518                 break;
5519         case LPFC_BSG_VENDOR_LINK_DIAG_TEST:
5520                 rc = lpfc_sli4_bsg_link_diag_test(job);
5521                 break;
5522         case LPFC_BSG_VENDOR_GET_MGMT_REV:
5523                 rc = lpfc_bsg_get_dfc_rev(job);
5524                 break;
5525         case LPFC_BSG_VENDOR_MBOX:
5526                 rc = lpfc_bsg_mbox_cmd(job);
5527                 break;
5528         case LPFC_BSG_VENDOR_FORCED_LINK_SPEED:
5529                 rc = lpfc_forced_link_speed(job);
5530                 break;
5531         case LPFC_BSG_VENDOR_RAS_GET_LWPD:
5532                 rc = lpfc_bsg_get_ras_lwpd(job);
5533                 break;
5534         case LPFC_BSG_VENDOR_RAS_GET_FWLOG:
5535                 rc = lpfc_bsg_get_ras_fwlog(job);
5536                 break;
5537         case LPFC_BSG_VENDOR_RAS_GET_CONFIG:
5538                 rc = lpfc_bsg_get_ras_config(job);
5539                 break;
5540         case LPFC_BSG_VENDOR_RAS_SET_CONFIG:
5541                 rc = lpfc_bsg_set_ras_config(job);
5542                 break;
5543         case LPFC_BSG_VENDOR_GET_TRUNK_INFO:
5544                 rc = lpfc_get_trunk_info(job);
5545                 break;
5546         case LPFC_BSG_VENDOR_GET_CGNBUF_INFO:
5547                 rc = lpfc_get_cgnbuf_info(job);
5548                 break;
5549         default:
5550                 rc = -EINVAL;
5551                 bsg_reply->reply_payload_rcv_len = 0;
5552                 /* make error code available to userspace */
5553                 bsg_reply->result = rc;
5554                 break;
5555         }
5556
5557         return rc;
5558 }
5559
5560 /**
5561  * lpfc_bsg_request - handle a bsg request from the FC transport
5562  * @job: bsg_job to handle
5563  **/
5564 int
5565 lpfc_bsg_request(struct bsg_job *job)
5566 {
5567         struct fc_bsg_request *bsg_request = job->request;
5568         struct fc_bsg_reply *bsg_reply = job->reply;
5569         uint32_t msgcode;
5570         int rc;
5571
5572         msgcode = bsg_request->msgcode;
5573         switch (msgcode) {
5574         case FC_BSG_HST_VENDOR:
5575                 rc = lpfc_bsg_hst_vendor(job);
5576                 break;
5577         case FC_BSG_RPT_ELS:
5578                 rc = lpfc_bsg_rport_els(job);
5579                 break;
5580         case FC_BSG_RPT_CT:
5581                 rc = lpfc_bsg_send_mgmt_cmd(job);
5582                 break;
5583         default:
5584                 rc = -EINVAL;
5585                 bsg_reply->reply_payload_rcv_len = 0;
5586                 /* make error code available to userspace */
5587                 bsg_reply->result = rc;
5588                 break;
5589         }
5590
5591         return rc;
5592 }
5593
5594 /**
5595  * lpfc_bsg_timeout - handle timeout of a bsg request from the FC transport
5596  * @job: bsg_job that has timed out
5597  *
5598  * This function just aborts the job's IOCB.  The aborted IOCB will return to
5599  * the waiting function which will handle passing the error back to userspace
5600  **/
5601 int
5602 lpfc_bsg_timeout(struct bsg_job *job)
5603 {
5604         struct lpfc_vport *vport = shost_priv(fc_bsg_to_shost(job));
5605         struct lpfc_hba *phba = vport->phba;
5606         struct lpfc_iocbq *cmdiocb;
5607         struct lpfc_sli_ring *pring;
5608         struct bsg_job_data *dd_data;
5609         unsigned long flags;
5610         int rc = 0;
5611         LIST_HEAD(completions);
5612         struct lpfc_iocbq *check_iocb, *next_iocb;
5613
5614         pring = lpfc_phba_elsring(phba);
5615         if (unlikely(!pring))
5616                 return -EIO;
5617
5618         /* if job's driver data is NULL, the command completed or is in the
5619          * the process of completing.  In this case, return status to request
5620          * so the timeout is retried.  This avoids double completion issues
5621          * and the request will be pulled off the timer queue when the
5622          * command's completion handler executes.  Otherwise, prevent the
5623          * command's completion handler from executing the job done callback
5624          * and continue processing to abort the outstanding the command.
5625          */
5626
5627         spin_lock_irqsave(&phba->ct_ev_lock, flags);
5628         dd_data = (struct bsg_job_data *)job->dd_data;
5629         if (dd_data) {
5630                 dd_data->set_job = NULL;
5631                 job->dd_data = NULL;
5632         } else {
5633                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5634                 return -EAGAIN;
5635         }
5636
5637         switch (dd_data->type) {
5638         case TYPE_IOCB:
5639                 /* Check to see if IOCB was issued to the port or not. If not,
5640                  * remove it from the txq queue and call cancel iocbs.
5641                  * Otherwise, call abort iotag
5642                  */
5643                 cmdiocb = dd_data->context_un.iocb.cmdiocbq;
5644                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5645
5646                 spin_lock_irqsave(&phba->hbalock, flags);
5647                 /* make sure the I/O abort window is still open */
5648                 if (!(cmdiocb->cmd_flag & LPFC_IO_CMD_OUTSTANDING)) {
5649                         spin_unlock_irqrestore(&phba->hbalock, flags);
5650                         return -EAGAIN;
5651                 }
5652                 list_for_each_entry_safe(check_iocb, next_iocb, &pring->txq,
5653                                          list) {
5654                         if (check_iocb == cmdiocb) {
5655                                 list_move_tail(&check_iocb->list, &completions);
5656                                 break;
5657                         }
5658                 }
5659                 if (list_empty(&completions))
5660                         lpfc_sli_issue_abort_iotag(phba, pring, cmdiocb, NULL);
5661                 spin_unlock_irqrestore(&phba->hbalock, flags);
5662                 if (!list_empty(&completions)) {
5663                         lpfc_sli_cancel_iocbs(phba, &completions,
5664                                               IOSTAT_LOCAL_REJECT,
5665                                               IOERR_SLI_ABORTED);
5666                 }
5667                 break;
5668
5669         case TYPE_EVT:
5670                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5671                 break;
5672
5673         case TYPE_MBOX:
5674                 /* Update the ext buf ctx state if needed */
5675
5676                 if (phba->mbox_ext_buf_ctx.state == LPFC_BSG_MBOX_PORT)
5677                         phba->mbox_ext_buf_ctx.state = LPFC_BSG_MBOX_ABTS;
5678                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5679                 break;
5680         default:
5681                 spin_unlock_irqrestore(&phba->ct_ev_lock, flags);
5682                 break;
5683         }
5684
5685         /* scsi transport fc fc_bsg_job_timeout expects a zero return code,
5686          * otherwise an error message will be displayed on the console
5687          * so always return success (zero)
5688          */
5689         return rc;
5690 }