drivers/scsi/bfa/bfad

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This source file includes following definitions.
bfa_cb_ioim_done
bfa_cb_ioim_good_comp
bfa_cb_ioim_abort
bfa_cb_tskim_done
bfad_im_info
bfad_im_abort_handler
bfad_im_target_reset_send
bfad_im_reset_lun_handler
bfad_im_reset_target_handler
bfad_im_slave_destroy
bfa_fcb_itnim_alloc
bfa_fcb_itnim_free
bfa_fcb_itnim_online
bfa_fcb_itnim_offline
bfad_im_scsi_host_alloc
bfad_im_scsi_host_free
bfad_im_port_delete_handler
bfad_im_port_new
bfad_im_port_delete
bfad_im_port_clean
bfad_aen_im_notify_handler
bfad_im_probe
bfad_im_probe_undo
bfad_scsi_host_alloc
bfad_scsi_host_free
bfad_destroy_workq
bfad_thread_workq
bfad_im_slave_configure
bfad_im_module_init
bfad_im_module_exit
bfad_ramp_up_qdepth
bfad_handle_qfull
bfad_get_itnim
bfad_im_check_if_make_lun_visible
bfad_im_slave_alloc
bfad_im_supported_speeds
bfad_fc_host_init
bfad_im_fc_rport_add
bfad_im_itnim_work_handler
bfad_im_queuecommand_lck
DEF_SCSI_QCMD
bfad_get_linkup_delay
   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
   4  * Copyright (c) 2014- QLogic Corporation.
   5  * All rights reserved
   6  * www.qlogic.com
   7  *
   8  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
   9  */
  10 
  11 /*
  12  *  bfad_im.c Linux driver IM module.
  13  */
  14 
  15 #include <linux/export.h>
  16 
  17 #include "bfad_drv.h"
  18 #include "bfad_im.h"
  19 #include "bfa_fcs.h"
  20 
  21 BFA_TRC_FILE(LDRV, IM);
  22 
  23 DEFINE_IDR(bfad_im_port_index);
  24 struct scsi_transport_template *bfad_im_scsi_transport_template;
  25 struct scsi_transport_template *bfad_im_scsi_vport_transport_template;
  26 static void bfad_im_itnim_work_handler(struct work_struct *work);
  27 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd);
  28 static int bfad_im_slave_alloc(struct scsi_device *sdev);
  29 static void bfad_im_fc_rport_add(struct bfad_im_port_s  *im_port,
  30                                 struct bfad_itnim_s *itnim);
  31 
  32 void
  33 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio,
  34                         enum bfi_ioim_status io_status, u8 scsi_status,
  35                         int sns_len, u8 *sns_info, s32 residue)
  36 {
  37         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
  38         struct bfad_s         *bfad = drv;
  39         struct bfad_itnim_data_s *itnim_data;
  40         struct bfad_itnim_s *itnim;
  41         u8         host_status = DID_OK;
  42 
  43         switch (io_status) {
  44         case BFI_IOIM_STS_OK:
  45                 bfa_trc(bfad, scsi_status);
  46                 scsi_set_resid(cmnd, 0);
  47 
  48                 if (sns_len > 0) {
  49                         bfa_trc(bfad, sns_len);
  50                         if (sns_len > SCSI_SENSE_BUFFERSIZE)
  51                                 sns_len = SCSI_SENSE_BUFFERSIZE;
  52                         memcpy(cmnd->sense_buffer, sns_info, sns_len);
  53                 }
  54 
  55                 if (residue > 0) {
  56                         bfa_trc(bfad, residue);
  57                         scsi_set_resid(cmnd, residue);
  58                         if (!sns_len && (scsi_status == SAM_STAT_GOOD) &&
  59                                 (scsi_bufflen(cmnd) - residue) <
  60                                         cmnd->underflow) {
  61                                 bfa_trc(bfad, 0);
  62                                 host_status = DID_ERROR;
  63                         }
  64                 }
  65                 cmnd->result = host_status << 16 | scsi_status;
  66 
  67                 break;
  68 
  69         case BFI_IOIM_STS_TIMEDOUT:
  70                 cmnd->result = DID_TIME_OUT << 16;
  71                 break;
  72         case BFI_IOIM_STS_PATHTOV:
  73                 cmnd->result = DID_TRANSPORT_DISRUPTED << 16;
  74                 break;
  75         default:
  76                 cmnd->result = DID_ERROR << 16;
  77         }
  78 
  79         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
  80         if (cmnd->device->host != NULL)
  81                 scsi_dma_unmap(cmnd);
  82 
  83         cmnd->host_scribble = NULL;
  84         bfa_trc(bfad, cmnd->result);
  85 
  86         itnim_data = cmnd->device->hostdata;
  87         if (itnim_data) {
  88                 itnim = itnim_data->itnim;
  89                 if (!cmnd->result && itnim &&
  90                          (bfa_lun_queue_depth > cmnd->device->queue_depth)) {
  91                         /* Queue depth adjustment for good status completion */
  92                         bfad_ramp_up_qdepth(itnim, cmnd->device);
  93                 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) {
  94                         /* qfull handling */
  95                         bfad_handle_qfull(itnim, cmnd->device);
  96                 }
  97         }
  98 
  99         cmnd->scsi_done(cmnd);
 100 }
 101 
 102 void
 103 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio)
 104 {
 105         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 106         struct bfad_itnim_data_s *itnim_data;
 107         struct bfad_itnim_s *itnim;
 108 
 109         cmnd->result = DID_OK << 16 | SCSI_STATUS_GOOD;
 110 
 111         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 112         if (cmnd->device->host != NULL)
 113                 scsi_dma_unmap(cmnd);
 114 
 115         cmnd->host_scribble = NULL;
 116 
 117         /* Queue depth adjustment */
 118         if (bfa_lun_queue_depth > cmnd->device->queue_depth) {
 119                 itnim_data = cmnd->device->hostdata;
 120                 if (itnim_data) {
 121                         itnim = itnim_data->itnim;
 122                         if (itnim)
 123                                 bfad_ramp_up_qdepth(itnim, cmnd->device);
 124                 }
 125         }
 126 
 127         cmnd->scsi_done(cmnd);
 128 }
 129 
 130 void
 131 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio)
 132 {
 133         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio;
 134         struct bfad_s         *bfad = drv;
 135 
 136         cmnd->result = DID_ERROR << 16;
 137 
 138         /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */
 139         if (cmnd->device->host != NULL)
 140                 scsi_dma_unmap(cmnd);
 141 
 142         bfa_trc(bfad, cmnd->result);
 143         cmnd->host_scribble = NULL;
 144 }
 145 
 146 void
 147 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk,
 148                    enum bfi_tskim_status tsk_status)
 149 {
 150         struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk;
 151         wait_queue_head_t *wq;
 152 
 153         cmnd->SCp.Status |= tsk_status << 1;
 154         set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status);
 155         wq = (wait_queue_head_t *) cmnd->SCp.ptr;
 156         cmnd->SCp.ptr = NULL;
 157 
 158         if (wq)
 159                 wake_up(wq);
 160 }
 161 
 162 /*
 163  *  Scsi_Host_template SCSI host template
 164  */
 165 /*
 166  * Scsi_Host template entry, returns BFAD PCI info.
 167  */
 168 static const char *
 169 bfad_im_info(struct Scsi_Host *shost)
 170 {
 171         static char     bfa_buf[256];
 172         struct bfad_im_port_s *im_port =
 173                         (struct bfad_im_port_s *) shost->hostdata[0];
 174         struct bfad_s *bfad = im_port->bfad;
 175 
 176         memset(bfa_buf, 0, sizeof(bfa_buf));
 177         snprintf(bfa_buf, sizeof(bfa_buf),
 178                 "QLogic BR-series FC/FCOE Adapter, hwpath: %s driver: %s",
 179                 bfad->pci_name, BFAD_DRIVER_VERSION);
 180 
 181         return bfa_buf;
 182 }
 183 
 184 /*
 185  * Scsi_Host template entry, aborts the specified SCSI command.
 186  *
 187  * Returns: SUCCESS or FAILED.
 188  */
 189 static int
 190 bfad_im_abort_handler(struct scsi_cmnd *cmnd)
 191 {
 192         struct Scsi_Host *shost = cmnd->device->host;
 193         struct bfad_im_port_s *im_port =
 194                         (struct bfad_im_port_s *) shost->hostdata[0];
 195         struct bfad_s         *bfad = im_port->bfad;
 196         struct bfa_ioim_s *hal_io;
 197         unsigned long   flags;
 198         u32        timeout;
 199         int             rc = FAILED;
 200 
 201         spin_lock_irqsave(&bfad->bfad_lock, flags);
 202         hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 203         if (!hal_io) {
 204                 /* IO has been completed, return success */
 205                 rc = SUCCESS;
 206                 goto out;
 207         }
 208         if (hal_io->dio != (struct bfad_ioim_s *) cmnd) {
 209                 rc = FAILED;
 210                 goto out;
 211         }
 212 
 213         bfa_trc(bfad, hal_io->iotag);
 214         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 215                 "scsi%d: abort cmnd %p iotag %x\n",
 216                 im_port->shost->host_no, cmnd, hal_io->iotag);
 217         (void) bfa_ioim_abort(hal_io);
 218         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 219 
 220         /* Need to wait until the command get aborted */
 221         timeout = 10;
 222         while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) {
 223                 set_current_state(TASK_UNINTERRUPTIBLE);
 224                 schedule_timeout(timeout);
 225                 if (timeout < 4 * HZ)
 226                         timeout *= 2;
 227         }
 228 
 229         cmnd->scsi_done(cmnd);
 230         bfa_trc(bfad, hal_io->iotag);
 231         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 232                 "scsi%d: complete abort 0x%p iotag 0x%x\n",
 233                 im_port->shost->host_no, cmnd, hal_io->iotag);
 234         return SUCCESS;
 235 out:
 236         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 237         return rc;
 238 }
 239 
 240 static bfa_status_t
 241 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd,
 242                      struct bfad_itnim_s *itnim)
 243 {
 244         struct bfa_tskim_s *tskim;
 245         struct bfa_itnim_s *bfa_itnim;
 246         bfa_status_t    rc = BFA_STATUS_OK;
 247         struct scsi_lun scsilun;
 248 
 249         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 250         if (!tskim) {
 251                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 252                         "target reset, fail to allocate tskim\n");
 253                 rc = BFA_STATUS_FAILED;
 254                 goto out;
 255         }
 256 
 257         /*
 258          * Set host_scribble to NULL to avoid aborting a task command if
 259          * happens.
 260          */
 261         cmnd->host_scribble = NULL;
 262         cmnd->SCp.Status = 0;
 263         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 264         /*
 265          * bfa_itnim can be NULL if the port gets disconnected and the bfa
 266          * and fcs layers have cleaned up their nexus with the targets and
 267          * the same has not been cleaned up by the shim
 268          */
 269         if (bfa_itnim == NULL) {
 270                 bfa_tskim_free(tskim);
 271                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 272                         "target reset, bfa_itnim is NULL\n");
 273                 rc = BFA_STATUS_FAILED;
 274                 goto out;
 275         }
 276 
 277         memset(&scsilun, 0, sizeof(scsilun));
 278         bfa_tskim_start(tskim, bfa_itnim, scsilun,
 279                             FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO);
 280 out:
 281         return rc;
 282 }
 283 
 284 /*
 285  * Scsi_Host template entry, resets a LUN and abort its all commands.
 286  *
 287  * Returns: SUCCESS or FAILED.
 288  *
 289  */
 290 static int
 291 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd)
 292 {
 293         struct Scsi_Host *shost = cmnd->device->host;
 294         struct bfad_im_port_s *im_port =
 295                         (struct bfad_im_port_s *) shost->hostdata[0];
 296         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
 297         struct bfad_s         *bfad = im_port->bfad;
 298         struct bfa_tskim_s *tskim;
 299         struct bfad_itnim_s   *itnim;
 300         struct bfa_itnim_s *bfa_itnim;
 301         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 302         int             rc = SUCCESS;
 303         unsigned long   flags;
 304         enum bfi_tskim_status task_status;
 305         struct scsi_lun scsilun;
 306 
 307         spin_lock_irqsave(&bfad->bfad_lock, flags);
 308         itnim = itnim_data->itnim;
 309         if (!itnim) {
 310                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 311                 rc = FAILED;
 312                 goto out;
 313         }
 314 
 315         tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
 316         if (!tskim) {
 317                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 318                                 "LUN reset, fail to allocate tskim");
 319                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 320                 rc = FAILED;
 321                 goto out;
 322         }
 323 
 324         /*
 325          * Set host_scribble to NULL to avoid aborting a task command
 326          * if happens.
 327          */
 328         cmnd->host_scribble = NULL;
 329         cmnd->SCp.ptr = (char *)&wq;
 330         cmnd->SCp.Status = 0;
 331         bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
 332         /*
 333          * bfa_itnim can be NULL if the port gets disconnected and the bfa
 334          * and fcs layers have cleaned up their nexus with the targets and
 335          * the same has not been cleaned up by the shim
 336          */
 337         if (bfa_itnim == NULL) {
 338                 bfa_tskim_free(tskim);
 339                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 340                         "lun reset, bfa_itnim is NULL\n");
 341                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 342                 rc = FAILED;
 343                 goto out;
 344         }
 345         int_to_scsilun(cmnd->device->lun, &scsilun);
 346         bfa_tskim_start(tskim, bfa_itnim, scsilun,
 347                             FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO);
 348         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 349 
 350         wait_event(wq, test_bit(IO_DONE_BIT,
 351                         (unsigned long *)&cmnd->SCp.Status));
 352 
 353         task_status = cmnd->SCp.Status >> 1;
 354         if (task_status != BFI_TSKIM_STS_OK) {
 355                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 356                         "LUN reset failure, status: %d\n", task_status);
 357                 rc = FAILED;
 358         }
 359 
 360 out:
 361         return rc;
 362 }
 363 
 364 /*
 365  * Scsi_Host template entry, resets the target and abort all commands.
 366  */
 367 static int
 368 bfad_im_reset_target_handler(struct scsi_cmnd *cmnd)
 369 {
 370         struct Scsi_Host *shost = cmnd->device->host;
 371         struct scsi_target *starget = scsi_target(cmnd->device);
 372         struct bfad_im_port_s *im_port =
 373                                 (struct bfad_im_port_s *) shost->hostdata[0];
 374         struct bfad_s         *bfad = im_port->bfad;
 375         struct bfad_itnim_s   *itnim;
 376         unsigned long   flags;
 377         u32        rc, rtn = FAILED;
 378         DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq);
 379         enum bfi_tskim_status task_status;
 380 
 381         spin_lock_irqsave(&bfad->bfad_lock, flags);
 382         itnim = bfad_get_itnim(im_port, starget->id);
 383         if (itnim) {
 384                 cmnd->SCp.ptr = (char *)&wq;
 385                 rc = bfad_im_target_reset_send(bfad, cmnd, itnim);
 386                 if (rc == BFA_STATUS_OK) {
 387                         /* wait target reset to complete */
 388                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 389                         wait_event(wq, test_bit(IO_DONE_BIT,
 390                                         (unsigned long *)&cmnd->SCp.Status));
 391                         spin_lock_irqsave(&bfad->bfad_lock, flags);
 392 
 393                         task_status = cmnd->SCp.Status >> 1;
 394                         if (task_status != BFI_TSKIM_STS_OK)
 395                                 BFA_LOG(KERN_ERR, bfad, bfa_log_level,
 396                                         "target reset failure,"
 397                                         " status: %d\n", task_status);
 398                         else
 399                                 rtn = SUCCESS;
 400                 }
 401         }
 402         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 403 
 404         return rtn;
 405 }
 406 
 407 /*
 408  * Scsi_Host template entry slave_destroy.
 409  */
 410 static void
 411 bfad_im_slave_destroy(struct scsi_device *sdev)
 412 {
 413         sdev->hostdata = NULL;
 414         return;
 415 }
 416 
 417 /*
 418  *  BFA FCS itnim callbacks
 419  */
 420 
 421 /*
 422  * BFA FCS itnim alloc callback, after successful PRLI
 423  * Context: Interrupt
 424  */
 425 int
 426 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim,
 427                     struct bfad_itnim_s **itnim_drv)
 428 {
 429         *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC);
 430         if (*itnim_drv == NULL)
 431                 return -ENOMEM;
 432 
 433         (*itnim_drv)->im = bfad->im;
 434         *itnim = &(*itnim_drv)->fcs_itnim;
 435         (*itnim_drv)->state = ITNIM_STATE_NONE;
 436 
 437         /*
 438          * Initiaze the itnim_work
 439          */
 440         INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler);
 441         bfad->bfad_flags |= BFAD_RPORT_ONLINE;
 442         return 0;
 443 }
 444 
 445 /*
 446  * BFA FCS itnim free callback.
 447  * Context: Interrupt. bfad_lock is held
 448  */
 449 void
 450 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv)
 451 {
 452         struct bfad_port_s    *port;
 453         wwn_t wwpn;
 454         u32 fcid;
 455         char wwpn_str[32], fcid_str[16];
 456         struct bfad_im_s        *im = itnim_drv->im;
 457 
 458         /* online to free state transtion should not happen */
 459         WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE);
 460 
 461         itnim_drv->queue_work = 1;
 462         /* offline request is not yet done, use the same request to free */
 463         if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING)
 464                 itnim_drv->queue_work = 0;
 465 
 466         itnim_drv->state = ITNIM_STATE_FREE;
 467         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 468         itnim_drv->im_port = port->im_port;
 469         wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim);
 470         fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim);
 471         wwn2str(wwpn_str, wwpn);
 472         fcid2str(fcid_str, fcid);
 473         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 474                 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n",
 475                 port->im_port->shost->host_no,
 476                 fcid_str, wwpn_str);
 477 
 478         /* ITNIM processing */
 479         if (itnim_drv->queue_work)
 480                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 481 }
 482 
 483 /*
 484  * BFA FCS itnim online callback.
 485  * Context: Interrupt. bfad_lock is held
 486  */
 487 void
 488 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv)
 489 {
 490         struct bfad_port_s    *port;
 491         struct bfad_im_s        *im = itnim_drv->im;
 492 
 493         itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim);
 494         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 495         itnim_drv->state = ITNIM_STATE_ONLINE;
 496         itnim_drv->queue_work = 1;
 497         itnim_drv->im_port = port->im_port;
 498 
 499         /* ITNIM processing */
 500         if (itnim_drv->queue_work)
 501                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 502 }
 503 
 504 /*
 505  * BFA FCS itnim offline callback.
 506  * Context: Interrupt. bfad_lock is held
 507  */
 508 void
 509 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv)
 510 {
 511         struct bfad_port_s    *port;
 512         struct bfad_s *bfad;
 513         struct bfad_im_s        *im = itnim_drv->im;
 514 
 515         port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim);
 516         bfad = port->bfad;
 517         if ((bfad->pport.flags & BFAD_PORT_DELETE) ||
 518                  (port->flags & BFAD_PORT_DELETE)) {
 519                 itnim_drv->state = ITNIM_STATE_OFFLINE;
 520                 return;
 521         }
 522         itnim_drv->im_port = port->im_port;
 523         itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING;
 524         itnim_drv->queue_work = 1;
 525 
 526         /* ITNIM processing */
 527         if (itnim_drv->queue_work)
 528                 queue_work(im->drv_workq, &itnim_drv->itnim_work);
 529 }
 530 
 531 /*
 532  * Allocate a Scsi_Host for a port.
 533  */
 534 int
 535 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port,
 536                         struct device *dev)
 537 {
 538         struct bfad_im_port_pointer *im_portp;
 539         int error;
 540 
 541         mutex_lock(&bfad_mutex);
 542         error = idr_alloc(&bfad_im_port_index, im_port, 0, 0, GFP_KERNEL);
 543         if (error < 0) {
 544                 mutex_unlock(&bfad_mutex);
 545                 printk(KERN_WARNING "idr_alloc failure\n");
 546                 goto out;
 547         }
 548         im_port->idr_id = error;
 549         mutex_unlock(&bfad_mutex);
 550 
 551         im_port->shost = bfad_scsi_host_alloc(im_port, bfad);
 552         if (!im_port->shost) {
 553                 error = 1;
 554                 goto out_free_idr;
 555         }
 556 
 557         im_portp = shost_priv(im_port->shost);
 558         im_portp->p = im_port;
 559         im_port->shost->unique_id = im_port->idr_id;
 560         im_port->shost->this_id = -1;
 561         im_port->shost->max_id = MAX_FCP_TARGET;
 562         im_port->shost->max_lun = MAX_FCP_LUN;
 563         im_port->shost->max_cmd_len = 16;
 564         im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth;
 565         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 566                 im_port->shost->transportt = bfad_im_scsi_transport_template;
 567         else
 568                 im_port->shost->transportt =
 569                                 bfad_im_scsi_vport_transport_template;
 570 
 571         error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev);
 572         if (error) {
 573                 printk(KERN_WARNING "scsi_add_host failure %d\n", error);
 574                 goto out_fc_rel;
 575         }
 576 
 577         return 0;
 578 
 579 out_fc_rel:
 580         scsi_host_put(im_port->shost);
 581         im_port->shost = NULL;
 582 out_free_idr:
 583         mutex_lock(&bfad_mutex);
 584         idr_remove(&bfad_im_port_index, im_port->idr_id);
 585         mutex_unlock(&bfad_mutex);
 586 out:
 587         return error;
 588 }
 589 
 590 void
 591 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 592 {
 593         bfa_trc(bfad, bfad->inst_no);
 594         BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n",
 595                         im_port->shost->host_no);
 596 
 597         fc_remove_host(im_port->shost);
 598 
 599         scsi_remove_host(im_port->shost);
 600         scsi_host_put(im_port->shost);
 601 
 602         mutex_lock(&bfad_mutex);
 603         idr_remove(&bfad_im_port_index, im_port->idr_id);
 604         mutex_unlock(&bfad_mutex);
 605 }
 606 
 607 static void
 608 bfad_im_port_delete_handler(struct work_struct *work)
 609 {
 610         struct bfad_im_port_s *im_port =
 611                 container_of(work, struct bfad_im_port_s, port_delete_work);
 612 
 613         if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) {
 614                 im_port->flags |= BFAD_PORT_DELETE;
 615                 fc_vport_terminate(im_port->fc_vport);
 616         }
 617 }
 618 
 619 bfa_status_t
 620 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port)
 621 {
 622         int             rc = BFA_STATUS_OK;
 623         struct bfad_im_port_s *im_port;
 624 
 625         im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC);
 626         if (im_port == NULL) {
 627                 rc = BFA_STATUS_ENOMEM;
 628                 goto ext;
 629         }
 630         port->im_port = im_port;
 631         im_port->port = port;
 632         im_port->bfad = bfad;
 633 
 634         INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler);
 635         INIT_LIST_HEAD(&im_port->itnim_mapped_list);
 636         INIT_LIST_HEAD(&im_port->binding_list);
 637 
 638 ext:
 639         return rc;
 640 }
 641 
 642 void
 643 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port)
 644 {
 645         struct bfad_im_port_s *im_port = port->im_port;
 646 
 647         queue_work(bfad->im->drv_workq,
 648                                 &im_port->port_delete_work);
 649 }
 650 
 651 void
 652 bfad_im_port_clean(struct bfad_im_port_s *im_port)
 653 {
 654         struct bfad_fcp_binding *bp, *bp_new;
 655         unsigned long flags;
 656         struct bfad_s *bfad =  im_port->bfad;
 657 
 658         spin_lock_irqsave(&bfad->bfad_lock, flags);
 659         list_for_each_entry_safe(bp, bp_new, &im_port->binding_list,
 660                                         list_entry) {
 661                 list_del(&bp->list_entry);
 662                 kfree(bp);
 663         }
 664 
 665         /* the itnim_mapped_list must be empty at this time */
 666         WARN_ON(!list_empty(&im_port->itnim_mapped_list));
 667 
 668         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 669 }
 670 
 671 static void bfad_aen_im_notify_handler(struct work_struct *work)
 672 {
 673         struct bfad_im_s *im =
 674                 container_of(work, struct bfad_im_s, aen_im_notify_work);
 675         struct bfa_aen_entry_s *aen_entry;
 676         struct bfad_s *bfad = im->bfad;
 677         struct Scsi_Host *shost = bfad->pport.im_port->shost;
 678         void *event_data;
 679         unsigned long flags;
 680 
 681         while (!list_empty(&bfad->active_aen_q)) {
 682                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 683                 bfa_q_deq(&bfad->active_aen_q, &aen_entry);
 684                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 685                 event_data = (char *)aen_entry + sizeof(struct list_head);
 686                 fc_host_post_vendor_event(shost, fc_get_event_number(),
 687                                 sizeof(struct bfa_aen_entry_s) -
 688                                 sizeof(struct list_head),
 689                                 (char *)event_data, BFAD_NL_VENDOR_ID);
 690                 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags);
 691                 list_add_tail(&aen_entry->qe, &bfad->free_aen_q);
 692                 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags);
 693         }
 694 }
 695 
 696 bfa_status_t
 697 bfad_im_probe(struct bfad_s *bfad)
 698 {
 699         struct bfad_im_s      *im;
 700 
 701         im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL);
 702         if (im == NULL)
 703                 return BFA_STATUS_ENOMEM;
 704 
 705         bfad->im = im;
 706         im->bfad = bfad;
 707 
 708         if (bfad_thread_workq(bfad) != BFA_STATUS_OK) {
 709                 kfree(im);
 710                 return BFA_STATUS_FAILED;
 711         }
 712 
 713         INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler);
 714         return BFA_STATUS_OK;
 715 }
 716 
 717 void
 718 bfad_im_probe_undo(struct bfad_s *bfad)
 719 {
 720         if (bfad->im) {
 721                 bfad_destroy_workq(bfad->im);
 722                 kfree(bfad->im);
 723                 bfad->im = NULL;
 724         }
 725 }
 726 
 727 struct Scsi_Host *
 728 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad)
 729 {
 730         struct scsi_host_template *sht;
 731 
 732         if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE)
 733                 sht = &bfad_im_scsi_host_template;
 734         else
 735                 sht = &bfad_im_vport_template;
 736 
 737         if (max_xfer_size != BFAD_MAX_SECTORS >> 1)
 738                 sht->max_sectors = max_xfer_size << 1;
 739 
 740         sht->sg_tablesize = bfad->cfg_data.io_max_sge;
 741 
 742         return scsi_host_alloc(sht, sizeof(struct bfad_im_port_pointer));
 743 }
 744 
 745 void
 746 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port)
 747 {
 748         if (!(im_port->flags & BFAD_PORT_DELETE))
 749                 flush_workqueue(bfad->im->drv_workq);
 750         bfad_im_scsi_host_free(im_port->bfad, im_port);
 751         bfad_im_port_clean(im_port);
 752         kfree(im_port);
 753 }
 754 
 755 void
 756 bfad_destroy_workq(struct bfad_im_s *im)
 757 {
 758         if (im && im->drv_workq) {
 759                 flush_workqueue(im->drv_workq);
 760                 destroy_workqueue(im->drv_workq);
 761                 im->drv_workq = NULL;
 762         }
 763 }
 764 
 765 bfa_status_t
 766 bfad_thread_workq(struct bfad_s *bfad)
 767 {
 768         struct bfad_im_s      *im = bfad->im;
 769 
 770         bfa_trc(bfad, 0);
 771         snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d",
 772                  bfad->inst_no);
 773         im->drv_workq = create_singlethread_workqueue(im->drv_workq_name);
 774         if (!im->drv_workq)
 775                 return BFA_STATUS_FAILED;
 776 
 777         return BFA_STATUS_OK;
 778 }
 779 
 780 /*
 781  * Scsi_Host template entry.
 782  *
 783  * Description:
 784  * OS entry point to adjust the queue_depths on a per-device basis.
 785  * Called once per device during the bus scan.
 786  * Return non-zero if fails.
 787  */
 788 static int
 789 bfad_im_slave_configure(struct scsi_device *sdev)
 790 {
 791         scsi_change_queue_depth(sdev, bfa_lun_queue_depth);
 792         return 0;
 793 }
 794 
 795 struct scsi_host_template bfad_im_scsi_host_template = {
 796         .module = THIS_MODULE,
 797         .name = BFAD_DRIVER_NAME,
 798         .info = bfad_im_info,
 799         .queuecommand = bfad_im_queuecommand,
 800         .eh_timed_out = fc_eh_timed_out,
 801         .eh_abort_handler = bfad_im_abort_handler,
 802         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 803         .eh_target_reset_handler = bfad_im_reset_target_handler,
 804 
 805         .slave_alloc = bfad_im_slave_alloc,
 806         .slave_configure = bfad_im_slave_configure,
 807         .slave_destroy = bfad_im_slave_destroy,
 808 
 809         .this_id = -1,
 810         .sg_tablesize = BFAD_IO_MAX_SGE,
 811         .cmd_per_lun = 3,
 812         .shost_attrs = bfad_im_host_attrs,
 813         .max_sectors = BFAD_MAX_SECTORS,
 814         .vendor_id = BFA_PCI_VENDOR_ID_BROCADE,
 815 };
 816 
 817 struct scsi_host_template bfad_im_vport_template = {
 818         .module = THIS_MODULE,
 819         .name = BFAD_DRIVER_NAME,
 820         .info = bfad_im_info,
 821         .queuecommand = bfad_im_queuecommand,
 822         .eh_timed_out = fc_eh_timed_out,
 823         .eh_abort_handler = bfad_im_abort_handler,
 824         .eh_device_reset_handler = bfad_im_reset_lun_handler,
 825         .eh_target_reset_handler = bfad_im_reset_target_handler,
 826 
 827         .slave_alloc = bfad_im_slave_alloc,
 828         .slave_configure = bfad_im_slave_configure,
 829         .slave_destroy = bfad_im_slave_destroy,
 830 
 831         .this_id = -1,
 832         .sg_tablesize = BFAD_IO_MAX_SGE,
 833         .cmd_per_lun = 3,
 834         .shost_attrs = bfad_im_vport_attrs,
 835         .max_sectors = BFAD_MAX_SECTORS,
 836 };
 837 
 838 bfa_status_t
 839 bfad_im_module_init(void)
 840 {
 841         bfad_im_scsi_transport_template =
 842                 fc_attach_transport(&bfad_im_fc_function_template);
 843         if (!bfad_im_scsi_transport_template)
 844                 return BFA_STATUS_ENOMEM;
 845 
 846         bfad_im_scsi_vport_transport_template =
 847                 fc_attach_transport(&bfad_im_vport_fc_function_template);
 848         if (!bfad_im_scsi_vport_transport_template) {
 849                 fc_release_transport(bfad_im_scsi_transport_template);
 850                 return BFA_STATUS_ENOMEM;
 851         }
 852 
 853         return BFA_STATUS_OK;
 854 }
 855 
 856 void
 857 bfad_im_module_exit(void)
 858 {
 859         if (bfad_im_scsi_transport_template)
 860                 fc_release_transport(bfad_im_scsi_transport_template);
 861 
 862         if (bfad_im_scsi_vport_transport_template)
 863                 fc_release_transport(bfad_im_scsi_vport_transport_template);
 864 
 865         idr_destroy(&bfad_im_port_index);
 866 }
 867 
 868 void
 869 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 870 {
 871         struct scsi_device *tmp_sdev;
 872 
 873         if (((jiffies - itnim->last_ramp_up_time) >
 874                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) &&
 875                 ((jiffies - itnim->last_queue_full_time) >
 876                 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) {
 877                 shost_for_each_device(tmp_sdev, sdev->host) {
 878                         if (bfa_lun_queue_depth > tmp_sdev->queue_depth) {
 879                                 if (tmp_sdev->id != sdev->id)
 880                                         continue;
 881                                 scsi_change_queue_depth(tmp_sdev,
 882                                         tmp_sdev->queue_depth + 1);
 883 
 884                                 itnim->last_ramp_up_time = jiffies;
 885                         }
 886                 }
 887         }
 888 }
 889 
 890 void
 891 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev)
 892 {
 893         struct scsi_device *tmp_sdev;
 894 
 895         itnim->last_queue_full_time = jiffies;
 896 
 897         shost_for_each_device(tmp_sdev, sdev->host) {
 898                 if (tmp_sdev->id != sdev->id)
 899                         continue;
 900                 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1);
 901         }
 902 }
 903 
 904 struct bfad_itnim_s *
 905 bfad_get_itnim(struct bfad_im_port_s *im_port, int id)
 906 {
 907         struct bfad_itnim_s   *itnim = NULL;
 908 
 909         /* Search the mapped list for this target ID */
 910         list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) {
 911                 if (id == itnim->scsi_tgt_id)
 912                         return itnim;
 913         }
 914 
 915         return NULL;
 916 }
 917 
 918 /*
 919  * Function is invoked from the SCSI Host Template slave_alloc() entry point.
 920  * Has the logic to query the LUN Mask database to check if this LUN needs to
 921  * be made visible to the SCSI mid-layer or not.
 922  *
 923  * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack.
 924  * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack.
 925  */
 926 static int
 927 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev,
 928                                   struct fc_rport *rport)
 929 {
 930         struct bfad_itnim_data_s *itnim_data =
 931                                 (struct bfad_itnim_data_s *) rport->dd_data;
 932         struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa;
 933         struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport;
 934         struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa);
 935         int i = 0, ret = -ENXIO;
 936 
 937         for (i = 0; i < MAX_LUN_MASK_CFG; i++) {
 938                 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE &&
 939                     scsilun_to_int(&lun_list[i].lun) == sdev->lun &&
 940                     lun_list[i].rp_tag == bfa_rport->rport_tag &&
 941                     lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) {
 942                         ret = BFA_STATUS_OK;
 943                         break;
 944                 }
 945         }
 946         return ret;
 947 }
 948 
 949 /*
 950  * Scsi_Host template entry slave_alloc
 951  */
 952 static int
 953 bfad_im_slave_alloc(struct scsi_device *sdev)
 954 {
 955         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 956         struct bfad_itnim_data_s *itnim_data;
 957         struct bfa_s *bfa;
 958 
 959         if (!rport || fc_remote_port_chkready(rport))
 960                 return -ENXIO;
 961 
 962         itnim_data = (struct bfad_itnim_data_s *) rport->dd_data;
 963         bfa = itnim_data->itnim->bfa_itnim->bfa;
 964 
 965         if (bfa_get_lun_mask_status(bfa) == BFA_LUNMASK_ENABLED) {
 966                 /*
 967                  * We should not mask LUN 0 - since this will translate
 968                  * to no LUN / TARGET for SCSI ml resulting no scan.
 969                  */
 970                 if (sdev->lun == 0) {
 971                         sdev->sdev_bflags |= BLIST_NOREPORTLUN |
 972                                              BLIST_SPARSELUN;
 973                         goto done;
 974                 }
 975 
 976                 /*
 977                  * Query LUN Mask configuration - to expose this LUN
 978                  * to the SCSI mid-layer or to mask it.
 979                  */
 980                 if (bfad_im_check_if_make_lun_visible(sdev, rport) !=
 981                                                         BFA_STATUS_OK)
 982                         return -ENXIO;
 983         }
 984 done:
 985         sdev->hostdata = rport->dd_data;
 986 
 987         return 0;
 988 }
 989 
 990 u32
 991 bfad_im_supported_speeds(struct bfa_s *bfa)
 992 {
 993         struct bfa_ioc_attr_s *ioc_attr;
 994         u32 supported_speed = 0;
 995 
 996         ioc_attr = kzalloc(sizeof(struct bfa_ioc_attr_s), GFP_KERNEL);
 997         if (!ioc_attr)
 998                 return 0;
 999 
1000         bfa_ioc_get_attr(&bfa->ioc, ioc_attr);
1001         if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_16GBPS)
1002                 supported_speed |=  FC_PORTSPEED_16GBIT | FC_PORTSPEED_8GBIT |
1003                                 FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT;
1004         else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_8GBPS) {
1005                 if (ioc_attr->adapter_attr.is_mezz) {
1006                         supported_speed |= FC_PORTSPEED_8GBIT |
1007                                 FC_PORTSPEED_4GBIT |
1008                                 FC_PORTSPEED_2GBIT | FC_PORTSPEED_1GBIT;
1009                 } else {
1010                         supported_speed |= FC_PORTSPEED_8GBIT |
1011                                 FC_PORTSPEED_4GBIT |
1012                                 FC_PORTSPEED_2GBIT;
1013                 }
1014         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_4GBPS) {
1015                 supported_speed |=  FC_PORTSPEED_4GBIT | FC_PORTSPEED_2GBIT |
1016                                 FC_PORTSPEED_1GBIT;
1017         } else if (ioc_attr->adapter_attr.max_speed == BFA_PORT_SPEED_10GBPS) {
1018                 supported_speed |= FC_PORTSPEED_10GBIT;
1019         }
1020         kfree(ioc_attr);
1021         return supported_speed;
1022 }
1023 
1024 void
1025 bfad_fc_host_init(struct bfad_im_port_s *im_port)
1026 {
1027         struct Scsi_Host *host = im_port->shost;
1028         struct bfad_s         *bfad = im_port->bfad;
1029         struct bfad_port_s    *port = im_port->port;
1030         char symname[BFA_SYMNAME_MAXLEN];
1031         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(&bfad->bfa);
1032 
1033         fc_host_node_name(host) =
1034                 cpu_to_be64((bfa_fcs_lport_get_nwwn(port->fcs_port)));
1035         fc_host_port_name(host) =
1036                 cpu_to_be64((bfa_fcs_lport_get_pwwn(port->fcs_port)));
1037         fc_host_max_npiv_vports(host) = bfa_lps_get_max_vport(&bfad->bfa);
1038 
1039         fc_host_supported_classes(host) = FC_COS_CLASS3;
1040 
1041         memset(fc_host_supported_fc4s(host), 0,
1042                sizeof(fc_host_supported_fc4s(host)));
1043         if (supported_fc4s & BFA_LPORT_ROLE_FCP_IM)
1044                 /* For FCP type 0x08 */
1045                 fc_host_supported_fc4s(host)[2] = 1;
1046         /* For fibre channel services type 0x20 */
1047         fc_host_supported_fc4s(host)[7] = 1;
1048 
1049         strlcpy(symname, bfad->bfa_fcs.fabric.bport.port_cfg.sym_name.symname,
1050                 BFA_SYMNAME_MAXLEN);
1051         sprintf(fc_host_symbolic_name(host), "%s", symname);
1052 
1053         fc_host_supported_speeds(host) = bfad_im_supported_speeds(&bfad->bfa);
1054         fc_host_maxframe_size(host) = fcport->cfg.maxfrsize;
1055 }
1056 
1057 static void
1058 bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, struct bfad_itnim_s *itnim)
1059 {
1060         struct fc_rport_identifiers rport_ids;
1061         struct fc_rport *fc_rport;
1062         struct bfad_itnim_data_s *itnim_data;
1063 
1064         rport_ids.node_name =
1065                 cpu_to_be64(bfa_fcs_itnim_get_nwwn(&itnim->fcs_itnim));
1066         rport_ids.port_name =
1067                 cpu_to_be64(bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1068         rport_ids.port_id =
1069                 bfa_hton3b(bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim));
1070         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
1071 
1072         itnim->fc_rport = fc_rport =
1073                 fc_remote_port_add(im_port->shost, 0, &rport_ids);
1074 
1075         if (!fc_rport)
1076                 return;
1077 
1078         fc_rport->maxframe_size =
1079                 bfa_fcs_itnim_get_maxfrsize(&itnim->fcs_itnim);
1080         fc_rport->supported_classes = bfa_fcs_itnim_get_cos(&itnim->fcs_itnim);
1081 
1082         itnim_data = fc_rport->dd_data;
1083         itnim_data->itnim = itnim;
1084 
1085         rport_ids.roles |= FC_RPORT_ROLE_FCP_TARGET;
1086 
1087         if (rport_ids.roles != FC_RPORT_ROLE_UNKNOWN)
1088                 fc_remote_port_rolechg(fc_rport, rport_ids.roles);
1089 
1090         if ((fc_rport->scsi_target_id != -1)
1091             && (fc_rport->scsi_target_id < MAX_FCP_TARGET))
1092                 itnim->scsi_tgt_id = fc_rport->scsi_target_id;
1093 
1094         itnim->channel = fc_rport->channel;
1095 
1096         return;
1097 }
1098 
1099 /*
1100  * Work queue handler using FC transport service
1101 * Context: kernel
1102  */
1103 static void
1104 bfad_im_itnim_work_handler(struct work_struct *work)
1105 {
1106         struct bfad_itnim_s   *itnim = container_of(work, struct bfad_itnim_s,
1107                                                         itnim_work);
1108         struct bfad_im_s      *im = itnim->im;
1109         struct bfad_s         *bfad = im->bfad;
1110         struct bfad_im_port_s *im_port;
1111         unsigned long   flags;
1112         struct fc_rport *fc_rport;
1113         wwn_t wwpn;
1114         u32 fcid;
1115         char wwpn_str[32], fcid_str[16];
1116 
1117         spin_lock_irqsave(&bfad->bfad_lock, flags);
1118         im_port = itnim->im_port;
1119         bfa_trc(bfad, itnim->state);
1120         switch (itnim->state) {
1121         case ITNIM_STATE_ONLINE:
1122                 if (!itnim->fc_rport) {
1123                         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1124                         bfad_im_fc_rport_add(im_port, itnim);
1125                         spin_lock_irqsave(&bfad->bfad_lock, flags);
1126                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1127                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1128                         wwn2str(wwpn_str, wwpn);
1129                         fcid2str(fcid_str, fcid);
1130                         list_add_tail(&itnim->list_entry,
1131                                 &im_port->itnim_mapped_list);
1132                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1133                                 "ITNIM ONLINE Target: %d:0:%d "
1134                                 "FCID: %s WWPN: %s\n",
1135                                 im_port->shost->host_no,
1136                                 itnim->scsi_tgt_id,
1137                                 fcid_str, wwpn_str);
1138                 } else {
1139                         printk(KERN_WARNING
1140                                 "%s: itnim %llx is already in online state\n",
1141                                 __func__,
1142                                 bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim));
1143                 }
1144 
1145                 break;
1146         case ITNIM_STATE_OFFLINE_PENDING:
1147                 itnim->state = ITNIM_STATE_OFFLINE;
1148                 if (itnim->fc_rport) {
1149                         fc_rport = itnim->fc_rport;
1150                         ((struct bfad_itnim_data_s *)
1151                                 fc_rport->dd_data)->itnim = NULL;
1152                         itnim->fc_rport = NULL;
1153                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1154                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1155                                 fc_rport->dev_loss_tmo =
1156                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1157                                 fc_remote_port_delete(fc_rport);
1158                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1159                         }
1160                         wwpn = bfa_fcs_itnim_get_pwwn(&itnim->fcs_itnim);
1161                         fcid = bfa_fcs_itnim_get_fcid(&itnim->fcs_itnim);
1162                         wwn2str(wwpn_str, wwpn);
1163                         fcid2str(fcid_str, fcid);
1164                         list_del(&itnim->list_entry);
1165                         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
1166                                 "ITNIM OFFLINE Target: %d:0:%d "
1167                                 "FCID: %s WWPN: %s\n",
1168                                 im_port->shost->host_no,
1169                                 itnim->scsi_tgt_id,
1170                                 fcid_str, wwpn_str);
1171                 }
1172                 break;
1173         case ITNIM_STATE_FREE:
1174                 if (itnim->fc_rport) {
1175                         fc_rport = itnim->fc_rport;
1176                         ((struct bfad_itnim_data_s *)
1177                                 fc_rport->dd_data)->itnim = NULL;
1178                         itnim->fc_rport = NULL;
1179                         if (!(im_port->port->flags & BFAD_PORT_DELETE)) {
1180                                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1181                                 fc_rport->dev_loss_tmo =
1182                                         bfa_fcpim_path_tov_get(&bfad->bfa) + 1;
1183                                 fc_remote_port_delete(fc_rport);
1184                                 spin_lock_irqsave(&bfad->bfad_lock, flags);
1185                         }
1186                         list_del(&itnim->list_entry);
1187                 }
1188 
1189                 kfree(itnim);
1190                 break;
1191         default:
1192                 WARN_ON(1);
1193                 break;
1194         }
1195 
1196         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1197 }
1198 
1199 /*
1200  * Scsi_Host template entry, queue a SCSI command to the BFAD.
1201  */
1202 static int
1203 bfad_im_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))
1204 {
1205         struct bfad_im_port_s *im_port =
1206                 (struct bfad_im_port_s *) cmnd->device->host->hostdata[0];
1207         struct bfad_s         *bfad = im_port->bfad;
1208         struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata;
1209         struct bfad_itnim_s   *itnim;
1210         struct bfa_ioim_s *hal_io;
1211         unsigned long   flags;
1212         int             rc;
1213         int       sg_cnt = 0;
1214         struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device));
1215 
1216         rc = fc_remote_port_chkready(rport);
1217         if (rc) {
1218                 cmnd->result = rc;
1219                 done(cmnd);
1220                 return 0;
1221         }
1222 
1223         if (bfad->bfad_flags & BFAD_EEH_BUSY) {
1224                 if (bfad->bfad_flags & BFAD_EEH_PCI_CHANNEL_IO_PERM_FAILURE)
1225                         cmnd->result = DID_NO_CONNECT << 16;
1226                 else
1227                         cmnd->result = DID_REQUEUE << 16;
1228                 done(cmnd);
1229                 return 0;
1230         }
1231 
1232         sg_cnt = scsi_dma_map(cmnd);
1233         if (sg_cnt < 0)
1234                 return SCSI_MLQUEUE_HOST_BUSY;
1235 
1236         cmnd->scsi_done = done;
1237 
1238         spin_lock_irqsave(&bfad->bfad_lock, flags);
1239         if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) {
1240                 printk(KERN_WARNING
1241                         "bfad%d, queuecommand %p %x failed, BFA stopped\n",
1242                        bfad->inst_no, cmnd, cmnd->cmnd[0]);
1243                 cmnd->result = DID_NO_CONNECT << 16;
1244                 goto out_fail_cmd;
1245         }
1246 
1247 
1248         itnim = itnim_data->itnim;
1249         if (!itnim) {
1250                 cmnd->result = DID_IMM_RETRY << 16;
1251                 goto out_fail_cmd;
1252         }
1253 
1254         hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd,
1255                                     itnim->bfa_itnim, sg_cnt);
1256         if (!hal_io) {
1257                 printk(KERN_WARNING "hal_io failure\n");
1258                 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1259                 scsi_dma_unmap(cmnd);
1260                 return SCSI_MLQUEUE_HOST_BUSY;
1261         }
1262 
1263         cmnd->host_scribble = (char *)hal_io;
1264         bfa_ioim_start(hal_io);
1265         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1266 
1267         return 0;
1268 
1269 out_fail_cmd:
1270         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1271         scsi_dma_unmap(cmnd);
1272         if (done)
1273                 done(cmnd);
1274 
1275         return 0;
1276 }
1277 
1278 static DEF_SCSI_QCMD(bfad_im_queuecommand)
1279 
1280 void
1281 bfad_rport_online_wait(struct bfad_s *bfad)
1282 {
1283         int i;
1284         int rport_delay = 10;
1285 
1286         for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE)
1287                 && i < bfa_linkup_delay; i++) {
1288                 set_current_state(TASK_UNINTERRUPTIBLE);
1289                 schedule_timeout(HZ);
1290         }
1291 
1292         if (bfad->bfad_flags & BFAD_PORT_ONLINE) {
1293                 rport_delay = rport_delay < bfa_linkup_delay ?
1294                         rport_delay : bfa_linkup_delay;
1295                 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE)
1296                         && i < rport_delay; i++) {
1297                         set_current_state(TASK_UNINTERRUPTIBLE);
1298                         schedule_timeout(HZ);
1299                 }
1300 
1301                 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) {
1302                         set_current_state(TASK_UNINTERRUPTIBLE);
1303                         schedule_timeout(rport_delay * HZ);
1304                 }
1305         }
1306 }
1307 
1308 int
1309 bfad_get_linkup_delay(struct bfad_s *bfad)
1310 {
1311         u8              nwwns = 0;
1312         wwn_t           wwns[BFA_PREBOOT_BOOTLUN_MAX];
1313         int             linkup_delay;
1314 
1315         /*
1316          * Querying for the boot target port wwns
1317          * -- read from boot information in flash.
1318          * If nwwns > 0 => boot over SAN and set linkup_delay = 30
1319          * else => local boot machine set linkup_delay = 0
1320          */
1321 
1322         bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns);
1323 
1324         if (nwwns > 0)
1325                 /* If Boot over SAN set linkup_delay = 30sec */
1326                 linkup_delay = 30;
1327         else
1328                 /* If local boot; no linkup_delay */
1329                 linkup_delay = 0;
1330 
1331         return linkup_delay;
1332 }
/* [<][>][^][v][top][bottom][index][help] */
root/drivers/scsi/bfa/bfad_im.c

DEFINITIONS
