1 /* 2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc. 3 * All rights reserved 4 * www.brocade.com 5 * 6 * Linux driver for Brocade Fibre Channel Host Bus Adapter. 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License (GPL) Version 2 as 10 * published by the Free Software Foundation 11 * 12 * This program is distributed in the hope that it will be useful, but 13 * WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * General Public License for more details. 16 */ 17 18 /* 19 * bfad_im.c Linux driver IM module. 20 */ 21 22 #include <linux/export.h> 23 24 #include "bfad_drv.h" 25 #include "bfad_im.h" 26 #include "bfa_fcs.h" 27 28 BFA_TRC_FILE(LDRV, IM); 29 30 DEFINE_IDR(bfad_im_port_index); 31 struct scsi_transport_template *bfad_im_scsi_transport_template; 32 struct scsi_transport_template *bfad_im_scsi_vport_transport_template; 33 static void bfad_im_itnim_work_handler(struct work_struct *work); 34 static int bfad_im_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmnd); 35 static int bfad_im_slave_alloc(struct scsi_device *sdev); 36 static void bfad_im_fc_rport_add(struct bfad_im_port_s *im_port, 37 struct bfad_itnim_s *itnim); 38 39 void 40 bfa_cb_ioim_done(void *drv, struct bfad_ioim_s *dio, 41 enum bfi_ioim_status io_status, u8 scsi_status, 42 int sns_len, u8 *sns_info, s32 residue) 43 { 44 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; 45 struct bfad_s *bfad = drv; 46 struct bfad_itnim_data_s *itnim_data; 47 struct bfad_itnim_s *itnim; 48 u8 host_status = DID_OK; 49 50 switch (io_status) { 51 case BFI_IOIM_STS_OK: 52 bfa_trc(bfad, scsi_status); 53 scsi_set_resid(cmnd, 0); 54 55 if (sns_len > 0) { 56 bfa_trc(bfad, sns_len); 57 if (sns_len > SCSI_SENSE_BUFFERSIZE) 58 sns_len = SCSI_SENSE_BUFFERSIZE; 59 memcpy(cmnd->sense_buffer, sns_info, sns_len); 60 } 61 62 if (residue > 0) { 63 bfa_trc(bfad, residue); 64 scsi_set_resid(cmnd, residue); 65 if (!sns_len && (scsi_status == SAM_STAT_GOOD) && 66 (scsi_bufflen(cmnd) - residue) < 67 cmnd->underflow) { 68 bfa_trc(bfad, 0); 69 host_status = DID_ERROR; 70 } 71 } 72 cmnd->result = ScsiResult(host_status, scsi_status); 73 74 break; 75 76 case BFI_IOIM_STS_ABORTED: 77 case BFI_IOIM_STS_TIMEDOUT: 78 case BFI_IOIM_STS_PATHTOV: 79 default: 80 host_status = DID_ERROR; 81 cmnd->result = ScsiResult(host_status, 0); 82 } 83 84 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ 85 if (cmnd->device->host != NULL) 86 scsi_dma_unmap(cmnd); 87 88 cmnd->host_scribble = NULL; 89 bfa_trc(bfad, cmnd->result); 90 91 itnim_data = cmnd->device->hostdata; 92 if (itnim_data) { 93 itnim = itnim_data->itnim; 94 if (!cmnd->result && itnim && 95 (bfa_lun_queue_depth > cmnd->device->queue_depth)) { 96 /* Queue depth adjustment for good status completion */ 97 bfad_ramp_up_qdepth(itnim, cmnd->device); 98 } else if (cmnd->result == SAM_STAT_TASK_SET_FULL && itnim) { 99 /* qfull handling */ 100 bfad_handle_qfull(itnim, cmnd->device); 101 } 102 } 103 104 cmnd->scsi_done(cmnd); 105 } 106 107 void 108 bfa_cb_ioim_good_comp(void *drv, struct bfad_ioim_s *dio) 109 { 110 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; 111 struct bfad_itnim_data_s *itnim_data; 112 struct bfad_itnim_s *itnim; 113 114 cmnd->result = ScsiResult(DID_OK, SCSI_STATUS_GOOD); 115 116 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ 117 if (cmnd->device->host != NULL) 118 scsi_dma_unmap(cmnd); 119 120 cmnd->host_scribble = NULL; 121 122 /* Queue depth adjustment */ 123 if (bfa_lun_queue_depth > cmnd->device->queue_depth) { 124 itnim_data = cmnd->device->hostdata; 125 if (itnim_data) { 126 itnim = itnim_data->itnim; 127 if (itnim) 128 bfad_ramp_up_qdepth(itnim, cmnd->device); 129 } 130 } 131 132 cmnd->scsi_done(cmnd); 133 } 134 135 void 136 bfa_cb_ioim_abort(void *drv, struct bfad_ioim_s *dio) 137 { 138 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dio; 139 struct bfad_s *bfad = drv; 140 141 cmnd->result = ScsiResult(DID_ERROR, 0); 142 143 /* Unmap DMA, if host is NULL, it means a scsi passthru cmd */ 144 if (cmnd->device->host != NULL) 145 scsi_dma_unmap(cmnd); 146 147 bfa_trc(bfad, cmnd->result); 148 cmnd->host_scribble = NULL; 149 } 150 151 void 152 bfa_cb_tskim_done(void *bfad, struct bfad_tskim_s *dtsk, 153 enum bfi_tskim_status tsk_status) 154 { 155 struct scsi_cmnd *cmnd = (struct scsi_cmnd *)dtsk; 156 wait_queue_head_t *wq; 157 158 cmnd->SCp.Status |= tsk_status << 1; 159 set_bit(IO_DONE_BIT, (unsigned long *)&cmnd->SCp.Status); 160 wq = (wait_queue_head_t *) cmnd->SCp.ptr; 161 cmnd->SCp.ptr = NULL; 162 163 if (wq) 164 wake_up(wq); 165 } 166 167 /* 168 * Scsi_Host_template SCSI host template 169 */ 170 /* 171 * Scsi_Host template entry, returns BFAD PCI info. 172 */ 173 static const char * 174 bfad_im_info(struct Scsi_Host *shost) 175 { 176 static char bfa_buf[256]; 177 struct bfad_im_port_s *im_port = 178 (struct bfad_im_port_s *) shost->hostdata[0]; 179 struct bfad_s *bfad = im_port->bfad; 180 181 memset(bfa_buf, 0, sizeof(bfa_buf)); 182 snprintf(bfa_buf, sizeof(bfa_buf), 183 "Brocade FC/FCOE Adapter, " "hwpath: %s driver: %s", 184 bfad->pci_name, BFAD_DRIVER_VERSION); 185 186 return bfa_buf; 187 } 188 189 /* 190 * Scsi_Host template entry, aborts the specified SCSI command. 191 * 192 * Returns: SUCCESS or FAILED. 193 */ 194 static int 195 bfad_im_abort_handler(struct scsi_cmnd *cmnd) 196 { 197 struct Scsi_Host *shost = cmnd->device->host; 198 struct bfad_im_port_s *im_port = 199 (struct bfad_im_port_s *) shost->hostdata[0]; 200 struct bfad_s *bfad = im_port->bfad; 201 struct bfa_ioim_s *hal_io; 202 unsigned long flags; 203 u32 timeout; 204 int rc = FAILED; 205 206 spin_lock_irqsave(&bfad->bfad_lock, flags); 207 hal_io = (struct bfa_ioim_s *) cmnd->host_scribble; 208 if (!hal_io) { 209 /* IO has been completed, retrun success */ 210 rc = SUCCESS; 211 goto out; 212 } 213 if (hal_io->dio != (struct bfad_ioim_s *) cmnd) { 214 rc = FAILED; 215 goto out; 216 } 217 218 bfa_trc(bfad, hal_io->iotag); 219 BFA_LOG(KERN_INFO, bfad, bfa_log_level, 220 "scsi%d: abort cmnd %p iotag %x\n", 221 im_port->shost->host_no, cmnd, hal_io->iotag); 222 (void) bfa_ioim_abort(hal_io); 223 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 224 225 /* Need to wait until the command get aborted */ 226 timeout = 10; 227 while ((struct bfa_ioim_s *) cmnd->host_scribble == hal_io) { 228 set_current_state(TASK_UNINTERRUPTIBLE); 229 schedule_timeout(timeout); 230 if (timeout < 4 * HZ) 231 timeout *= 2; 232 } 233 234 cmnd->scsi_done(cmnd); 235 bfa_trc(bfad, hal_io->iotag); 236 BFA_LOG(KERN_INFO, bfad, bfa_log_level, 237 "scsi%d: complete abort 0x%p iotag 0x%x\n", 238 im_port->shost->host_no, cmnd, hal_io->iotag); 239 return SUCCESS; 240 out: 241 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 242 return rc; 243 } 244 245 static bfa_status_t 246 bfad_im_target_reset_send(struct bfad_s *bfad, struct scsi_cmnd *cmnd, 247 struct bfad_itnim_s *itnim) 248 { 249 struct bfa_tskim_s *tskim; 250 struct bfa_itnim_s *bfa_itnim; 251 bfa_status_t rc = BFA_STATUS_OK; 252 struct scsi_lun scsilun; 253 254 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); 255 if (!tskim) { 256 BFA_LOG(KERN_ERR, bfad, bfa_log_level, 257 "target reset, fail to allocate tskim\n"); 258 rc = BFA_STATUS_FAILED; 259 goto out; 260 } 261 262 /* 263 * Set host_scribble to NULL to avoid aborting a task command if 264 * happens. 265 */ 266 cmnd->host_scribble = NULL; 267 cmnd->SCp.Status = 0; 268 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); 269 memset(&scsilun, 0, sizeof(scsilun)); 270 bfa_tskim_start(tskim, bfa_itnim, scsilun, 271 FCP_TM_TARGET_RESET, BFAD_TARGET_RESET_TMO); 272 out: 273 return rc; 274 } 275 276 /* 277 * Scsi_Host template entry, resets a LUN and abort its all commands. 278 * 279 * Returns: SUCCESS or FAILED. 280 * 281 */ 282 static int 283 bfad_im_reset_lun_handler(struct scsi_cmnd *cmnd) 284 { 285 struct Scsi_Host *shost = cmnd->device->host; 286 struct bfad_im_port_s *im_port = 287 (struct bfad_im_port_s *) shost->hostdata[0]; 288 struct bfad_itnim_data_s *itnim_data = cmnd->device->hostdata; 289 struct bfad_s *bfad = im_port->bfad; 290 struct bfa_tskim_s *tskim; 291 struct bfad_itnim_s *itnim; 292 struct bfa_itnim_s *bfa_itnim; 293 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); 294 int rc = SUCCESS; 295 unsigned long flags; 296 enum bfi_tskim_status task_status; 297 struct scsi_lun scsilun; 298 299 spin_lock_irqsave(&bfad->bfad_lock, flags); 300 itnim = itnim_data->itnim; 301 if (!itnim) { 302 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 303 rc = FAILED; 304 goto out; 305 } 306 307 tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd); 308 if (!tskim) { 309 BFA_LOG(KERN_ERR, bfad, bfa_log_level, 310 "LUN reset, fail to allocate tskim"); 311 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 312 rc = FAILED; 313 goto out; 314 } 315 316 /* 317 * Set host_scribble to NULL to avoid aborting a task command 318 * if happens. 319 */ 320 cmnd->host_scribble = NULL; 321 cmnd->SCp.ptr = (char *)&wq; 322 cmnd->SCp.Status = 0; 323 bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim); 324 int_to_scsilun(cmnd->device->lun, &scsilun); 325 bfa_tskim_start(tskim, bfa_itnim, scsilun, 326 FCP_TM_LUN_RESET, BFAD_LUN_RESET_TMO); 327 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 328 329 wait_event(wq, test_bit(IO_DONE_BIT, 330 (unsigned long *)&cmnd->SCp.Status)); 331 332 task_status = cmnd->SCp.Status >> 1; 333 if (task_status != BFI_TSKIM_STS_OK) { 334 BFA_LOG(KERN_ERR, bfad, bfa_log_level, 335 "LUN reset failure, status: %d\n", task_status); 336 rc = FAILED; 337 } 338 339 out: 340 return rc; 341 } 342 343 /* 344 * Scsi_Host template entry, resets the bus and abort all commands. 345 */ 346 static int 347 bfad_im_reset_bus_handler(struct scsi_cmnd *cmnd) 348 { 349 struct Scsi_Host *shost = cmnd->device->host; 350 struct bfad_im_port_s *im_port = 351 (struct bfad_im_port_s *) shost->hostdata[0]; 352 struct bfad_s *bfad = im_port->bfad; 353 struct bfad_itnim_s *itnim; 354 unsigned long flags; 355 u32 i, rc, err_cnt = 0; 356 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(wq); 357 enum bfi_tskim_status task_status; 358 359 spin_lock_irqsave(&bfad->bfad_lock, flags); 360 for (i = 0; i < MAX_FCP_TARGET; i++) { 361 itnim = bfad_get_itnim(im_port, i); 362 if (itnim) { 363 cmnd->SCp.ptr = (char *)&wq; 364 rc = bfad_im_target_reset_send(bfad, cmnd, itnim); 365 if (rc != BFA_STATUS_OK) { 366 err_cnt++; 367 continue; 368 } 369 370 /* wait target reset to complete */ 371 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 372 wait_event(wq, test_bit(IO_DONE_BIT, 373 (unsigned long *)&cmnd->SCp.Status)); 374 spin_lock_irqsave(&bfad->bfad_lock, flags); 375 376 task_status = cmnd->SCp.Status >> 1; 377 if (task_status != BFI_TSKIM_STS_OK) { 378 BFA_LOG(KERN_ERR, bfad, bfa_log_level, 379 "target reset failure," 380 " status: %d\n", task_status); 381 err_cnt++; 382 } 383 } 384 } 385 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 386 387 if (err_cnt) 388 return FAILED; 389 390 return SUCCESS; 391 } 392 393 /* 394 * Scsi_Host template entry slave_destroy. 395 */ 396 static void 397 bfad_im_slave_destroy(struct scsi_device *sdev) 398 { 399 sdev->hostdata = NULL; 400 return; 401 } 402 403 /* 404 * BFA FCS itnim callbacks 405 */ 406 407 /* 408 * BFA FCS itnim alloc callback, after successful PRLI 409 * Context: Interrupt 410 */ 411 void 412 bfa_fcb_itnim_alloc(struct bfad_s *bfad, struct bfa_fcs_itnim_s **itnim, 413 struct bfad_itnim_s **itnim_drv) 414 { 415 *itnim_drv = kzalloc(sizeof(struct bfad_itnim_s), GFP_ATOMIC); 416 if (*itnim_drv == NULL) 417 return; 418 419 (*itnim_drv)->im = bfad->im; 420 *itnim = &(*itnim_drv)->fcs_itnim; 421 (*itnim_drv)->state = ITNIM_STATE_NONE; 422 423 /* 424 * Initiaze the itnim_work 425 */ 426 INIT_WORK(&(*itnim_drv)->itnim_work, bfad_im_itnim_work_handler); 427 bfad->bfad_flags |= BFAD_RPORT_ONLINE; 428 } 429 430 /* 431 * BFA FCS itnim free callback. 432 * Context: Interrupt. bfad_lock is held 433 */ 434 void 435 bfa_fcb_itnim_free(struct bfad_s *bfad, struct bfad_itnim_s *itnim_drv) 436 { 437 struct bfad_port_s *port; 438 wwn_t wwpn; 439 u32 fcid; 440 char wwpn_str[32], fcid_str[16]; 441 struct bfad_im_s *im = itnim_drv->im; 442 443 /* online to free state transtion should not happen */ 444 WARN_ON(itnim_drv->state == ITNIM_STATE_ONLINE); 445 446 itnim_drv->queue_work = 1; 447 /* offline request is not yet done, use the same request to free */ 448 if (itnim_drv->state == ITNIM_STATE_OFFLINE_PENDING) 449 itnim_drv->queue_work = 0; 450 451 itnim_drv->state = ITNIM_STATE_FREE; 452 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); 453 itnim_drv->im_port = port->im_port; 454 wwpn = bfa_fcs_itnim_get_pwwn(&itnim_drv->fcs_itnim); 455 fcid = bfa_fcs_itnim_get_fcid(&itnim_drv->fcs_itnim); 456 wwn2str(wwpn_str, wwpn); 457 fcid2str(fcid_str, fcid); 458 BFA_LOG(KERN_INFO, bfad, bfa_log_level, 459 "ITNIM FREE scsi%d: FCID: %s WWPN: %s\n", 460 port->im_port->shost->host_no, 461 fcid_str, wwpn_str); 462 463 /* ITNIM processing */ 464 if (itnim_drv->queue_work) 465 queue_work(im->drv_workq, &itnim_drv->itnim_work); 466 } 467 468 /* 469 * BFA FCS itnim online callback. 470 * Context: Interrupt. bfad_lock is held 471 */ 472 void 473 bfa_fcb_itnim_online(struct bfad_itnim_s *itnim_drv) 474 { 475 struct bfad_port_s *port; 476 struct bfad_im_s *im = itnim_drv->im; 477 478 itnim_drv->bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim_drv->fcs_itnim); 479 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); 480 itnim_drv->state = ITNIM_STATE_ONLINE; 481 itnim_drv->queue_work = 1; 482 itnim_drv->im_port = port->im_port; 483 484 /* ITNIM processing */ 485 if (itnim_drv->queue_work) 486 queue_work(im->drv_workq, &itnim_drv->itnim_work); 487 } 488 489 /* 490 * BFA FCS itnim offline callback. 491 * Context: Interrupt. bfad_lock is held 492 */ 493 void 494 bfa_fcb_itnim_offline(struct bfad_itnim_s *itnim_drv) 495 { 496 struct bfad_port_s *port; 497 struct bfad_s *bfad; 498 struct bfad_im_s *im = itnim_drv->im; 499 500 port = bfa_fcs_itnim_get_drvport(&itnim_drv->fcs_itnim); 501 bfad = port->bfad; 502 if ((bfad->pport.flags & BFAD_PORT_DELETE) || 503 (port->flags & BFAD_PORT_DELETE)) { 504 itnim_drv->state = ITNIM_STATE_OFFLINE; 505 return; 506 } 507 itnim_drv->im_port = port->im_port; 508 itnim_drv->state = ITNIM_STATE_OFFLINE_PENDING; 509 itnim_drv->queue_work = 1; 510 511 /* ITNIM processing */ 512 if (itnim_drv->queue_work) 513 queue_work(im->drv_workq, &itnim_drv->itnim_work); 514 } 515 516 /* 517 * Allocate a Scsi_Host for a port. 518 */ 519 int 520 bfad_im_scsi_host_alloc(struct bfad_s *bfad, struct bfad_im_port_s *im_port, 521 struct device *dev) 522 { 523 int error = 1; 524 525 mutex_lock(&bfad_mutex); 526 if (!idr_pre_get(&bfad_im_port_index, GFP_KERNEL)) { 527 mutex_unlock(&bfad_mutex); 528 printk(KERN_WARNING "idr_pre_get failure\n"); 529 goto out; 530 } 531 532 error = idr_get_new(&bfad_im_port_index, im_port, 533 &im_port->idr_id); 534 if (error) { 535 mutex_unlock(&bfad_mutex); 536 printk(KERN_WARNING "idr_get_new failure\n"); 537 goto out; 538 } 539 540 mutex_unlock(&bfad_mutex); 541 542 im_port->shost = bfad_scsi_host_alloc(im_port, bfad); 543 if (!im_port->shost) { 544 error = 1; 545 goto out_free_idr; 546 } 547 548 im_port->shost->hostdata[0] = (unsigned long)im_port; 549 im_port->shost->unique_id = im_port->idr_id; 550 im_port->shost->this_id = -1; 551 im_port->shost->max_id = MAX_FCP_TARGET; 552 im_port->shost->max_lun = MAX_FCP_LUN; 553 im_port->shost->max_cmd_len = 16; 554 im_port->shost->can_queue = bfad->cfg_data.ioc_queue_depth; 555 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) 556 im_port->shost->transportt = bfad_im_scsi_transport_template; 557 else 558 im_port->shost->transportt = 559 bfad_im_scsi_vport_transport_template; 560 561 error = scsi_add_host_with_dma(im_port->shost, dev, &bfad->pcidev->dev); 562 if (error) { 563 printk(KERN_WARNING "scsi_add_host failure %d\n", error); 564 goto out_fc_rel; 565 } 566 567 return 0; 568 569 out_fc_rel: 570 scsi_host_put(im_port->shost); 571 im_port->shost = NULL; 572 out_free_idr: 573 mutex_lock(&bfad_mutex); 574 idr_remove(&bfad_im_port_index, im_port->idr_id); 575 mutex_unlock(&bfad_mutex); 576 out: 577 return error; 578 } 579 580 void 581 bfad_im_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) 582 { 583 bfa_trc(bfad, bfad->inst_no); 584 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "Free scsi%d\n", 585 im_port->shost->host_no); 586 587 fc_remove_host(im_port->shost); 588 589 scsi_remove_host(im_port->shost); 590 scsi_host_put(im_port->shost); 591 592 mutex_lock(&bfad_mutex); 593 idr_remove(&bfad_im_port_index, im_port->idr_id); 594 mutex_unlock(&bfad_mutex); 595 } 596 597 static void 598 bfad_im_port_delete_handler(struct work_struct *work) 599 { 600 struct bfad_im_port_s *im_port = 601 container_of(work, struct bfad_im_port_s, port_delete_work); 602 603 if (im_port->port->pvb_type != BFAD_PORT_PHYS_BASE) { 604 im_port->flags |= BFAD_PORT_DELETE; 605 fc_vport_terminate(im_port->fc_vport); 606 } 607 } 608 609 bfa_status_t 610 bfad_im_port_new(struct bfad_s *bfad, struct bfad_port_s *port) 611 { 612 int rc = BFA_STATUS_OK; 613 struct bfad_im_port_s *im_port; 614 615 im_port = kzalloc(sizeof(struct bfad_im_port_s), GFP_ATOMIC); 616 if (im_port == NULL) { 617 rc = BFA_STATUS_ENOMEM; 618 goto ext; 619 } 620 port->im_port = im_port; 621 im_port->port = port; 622 im_port->bfad = bfad; 623 624 INIT_WORK(&im_port->port_delete_work, bfad_im_port_delete_handler); 625 INIT_LIST_HEAD(&im_port->itnim_mapped_list); 626 INIT_LIST_HEAD(&im_port->binding_list); 627 628 ext: 629 return rc; 630 } 631 632 void 633 bfad_im_port_delete(struct bfad_s *bfad, struct bfad_port_s *port) 634 { 635 struct bfad_im_port_s *im_port = port->im_port; 636 637 queue_work(bfad->im->drv_workq, 638 &im_port->port_delete_work); 639 } 640 641 void 642 bfad_im_port_clean(struct bfad_im_port_s *im_port) 643 { 644 struct bfad_fcp_binding *bp, *bp_new; 645 unsigned long flags; 646 struct bfad_s *bfad = im_port->bfad; 647 648 spin_lock_irqsave(&bfad->bfad_lock, flags); 649 list_for_each_entry_safe(bp, bp_new, &im_port->binding_list, 650 list_entry) { 651 list_del(&bp->list_entry); 652 kfree(bp); 653 } 654 655 /* the itnim_mapped_list must be empty at this time */ 656 WARN_ON(!list_empty(&im_port->itnim_mapped_list)); 657 658 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 659 } 660 661 static void bfad_aen_im_notify_handler(struct work_struct *work) 662 { 663 struct bfad_im_s *im = 664 container_of(work, struct bfad_im_s, aen_im_notify_work); 665 struct bfa_aen_entry_s *aen_entry; 666 struct bfad_s *bfad = im->bfad; 667 struct Scsi_Host *shost = bfad->pport.im_port->shost; 668 void *event_data; 669 unsigned long flags; 670 671 while (!list_empty(&bfad->active_aen_q)) { 672 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags); 673 bfa_q_deq(&bfad->active_aen_q, &aen_entry); 674 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags); 675 event_data = (char *)aen_entry + sizeof(struct list_head); 676 fc_host_post_vendor_event(shost, fc_get_event_number(), 677 sizeof(struct bfa_aen_entry_s) - 678 sizeof(struct list_head), 679 (char *)event_data, BFAD_NL_VENDOR_ID); 680 spin_lock_irqsave(&bfad->bfad_aen_spinlock, flags); 681 list_add_tail(&aen_entry->qe, &bfad->free_aen_q); 682 spin_unlock_irqrestore(&bfad->bfad_aen_spinlock, flags); 683 } 684 } 685 686 bfa_status_t 687 bfad_im_probe(struct bfad_s *bfad) 688 { 689 struct bfad_im_s *im; 690 bfa_status_t rc = BFA_STATUS_OK; 691 692 im = kzalloc(sizeof(struct bfad_im_s), GFP_KERNEL); 693 if (im == NULL) { 694 rc = BFA_STATUS_ENOMEM; 695 goto ext; 696 } 697 698 bfad->im = im; 699 im->bfad = bfad; 700 701 if (bfad_thread_workq(bfad) != BFA_STATUS_OK) { 702 kfree(im); 703 rc = BFA_STATUS_FAILED; 704 } 705 706 INIT_WORK(&im->aen_im_notify_work, bfad_aen_im_notify_handler); 707 ext: 708 return rc; 709 } 710 711 void 712 bfad_im_probe_undo(struct bfad_s *bfad) 713 { 714 if (bfad->im) { 715 bfad_destroy_workq(bfad->im); 716 kfree(bfad->im); 717 bfad->im = NULL; 718 } 719 } 720 721 struct Scsi_Host * 722 bfad_scsi_host_alloc(struct bfad_im_port_s *im_port, struct bfad_s *bfad) 723 { 724 struct scsi_host_template *sht; 725 726 if (im_port->port->pvb_type == BFAD_PORT_PHYS_BASE) 727 sht = &bfad_im_scsi_host_template; 728 else 729 sht = &bfad_im_vport_template; 730 731 if (max_xfer_size != BFAD_MAX_SECTORS >> 1) 732 sht->max_sectors = max_xfer_size << 1; 733 734 sht->sg_tablesize = bfad->cfg_data.io_max_sge; 735 736 return scsi_host_alloc(sht, sizeof(unsigned long)); 737 } 738 739 void 740 bfad_scsi_host_free(struct bfad_s *bfad, struct bfad_im_port_s *im_port) 741 { 742 if (!(im_port->flags & BFAD_PORT_DELETE)) 743 flush_workqueue(bfad->im->drv_workq); 744 bfad_im_scsi_host_free(im_port->bfad, im_port); 745 bfad_im_port_clean(im_port); 746 kfree(im_port); 747 } 748 749 void 750 bfad_destroy_workq(struct bfad_im_s *im) 751 { 752 if (im && im->drv_workq) { 753 flush_workqueue(im->drv_workq); 754 destroy_workqueue(im->drv_workq); 755 im->drv_workq = NULL; 756 } 757 } 758 759 bfa_status_t 760 bfad_thread_workq(struct bfad_s *bfad) 761 { 762 struct bfad_im_s *im = bfad->im; 763 764 bfa_trc(bfad, 0); 765 snprintf(im->drv_workq_name, KOBJ_NAME_LEN, "bfad_wq_%d", 766 bfad->inst_no); 767 im->drv_workq = create_singlethread_workqueue(im->drv_workq_name); 768 if (!im->drv_workq) 769 return BFA_STATUS_FAILED; 770 771 return BFA_STATUS_OK; 772 } 773 774 /* 775 * Scsi_Host template entry. 776 * 777 * Description: 778 * OS entry point to adjust the queue_depths on a per-device basis. 779 * Called once per device during the bus scan. 780 * Return non-zero if fails. 781 */ 782 static int 783 bfad_im_slave_configure(struct scsi_device *sdev) 784 { 785 if (sdev->tagged_supported) 786 scsi_activate_tcq(sdev, bfa_lun_queue_depth); 787 else 788 scsi_deactivate_tcq(sdev, bfa_lun_queue_depth); 789 790 return 0; 791 } 792 793 struct scsi_host_template bfad_im_scsi_host_template = { 794 .module = THIS_MODULE, 795 .name = BFAD_DRIVER_NAME, 796 .info = bfad_im_info, 797 .queuecommand = bfad_im_queuecommand, 798 .eh_abort_handler = bfad_im_abort_handler, 799 .eh_device_reset_handler = bfad_im_reset_lun_handler, 800 .eh_bus_reset_handler = bfad_im_reset_bus_handler, 801 802 .slave_alloc = bfad_im_slave_alloc, 803 .slave_configure = bfad_im_slave_configure, 804 .slave_destroy = bfad_im_slave_destroy, 805 806 .this_id = -1, 807 .sg_tablesize = BFAD_IO_MAX_SGE, 808 .cmd_per_lun = 3, 809 .use_clustering = ENABLE_CLUSTERING, 810 .shost_attrs = bfad_im_host_attrs, 811 .max_sectors = BFAD_MAX_SECTORS, 812 .vendor_id = BFA_PCI_VENDOR_ID_BROCADE, 813 }; 814 815 struct scsi_host_template bfad_im_vport_template = { 816 .module = THIS_MODULE, 817 .name = BFAD_DRIVER_NAME, 818 .info = bfad_im_info, 819 .queuecommand = bfad_im_queuecommand, 820 .eh_abort_handler = bfad_im_abort_handler, 821 .eh_device_reset_handler = bfad_im_reset_lun_handler, 822 .eh_bus_reset_handler = bfad_im_reset_bus_handler, 823 824 .slave_alloc = bfad_im_slave_alloc, 825 .slave_configure = bfad_im_slave_configure, 826 .slave_destroy = bfad_im_slave_destroy, 827 828 .this_id = -1, 829 .sg_tablesize = BFAD_IO_MAX_SGE, 830 .cmd_per_lun = 3, 831 .use_clustering = ENABLE_CLUSTERING, 832 .shost_attrs = bfad_im_vport_attrs, 833 .max_sectors = BFAD_MAX_SECTORS, 834 }; 835 836 bfa_status_t 837 bfad_im_module_init(void) 838 { 839 bfad_im_scsi_transport_template = 840 fc_attach_transport(&bfad_im_fc_function_template); 841 if (!bfad_im_scsi_transport_template) 842 return BFA_STATUS_ENOMEM; 843 844 bfad_im_scsi_vport_transport_template = 845 fc_attach_transport(&bfad_im_vport_fc_function_template); 846 if (!bfad_im_scsi_vport_transport_template) { 847 fc_release_transport(bfad_im_scsi_transport_template); 848 return BFA_STATUS_ENOMEM; 849 } 850 851 return BFA_STATUS_OK; 852 } 853 854 void 855 bfad_im_module_exit(void) 856 { 857 if (bfad_im_scsi_transport_template) 858 fc_release_transport(bfad_im_scsi_transport_template); 859 860 if (bfad_im_scsi_vport_transport_template) 861 fc_release_transport(bfad_im_scsi_vport_transport_template); 862 } 863 864 void 865 bfad_ramp_up_qdepth(struct bfad_itnim_s *itnim, struct scsi_device *sdev) 866 { 867 struct scsi_device *tmp_sdev; 868 869 if (((jiffies - itnim->last_ramp_up_time) > 870 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ) && 871 ((jiffies - itnim->last_queue_full_time) > 872 BFA_QUEUE_FULL_RAMP_UP_TIME * HZ)) { 873 shost_for_each_device(tmp_sdev, sdev->host) { 874 if (bfa_lun_queue_depth > tmp_sdev->queue_depth) { 875 if (tmp_sdev->id != sdev->id) 876 continue; 877 if (tmp_sdev->ordered_tags) 878 scsi_adjust_queue_depth(tmp_sdev, 879 MSG_ORDERED_TAG, 880 tmp_sdev->queue_depth + 1); 881 else 882 scsi_adjust_queue_depth(tmp_sdev, 883 MSG_SIMPLE_TAG, 884 tmp_sdev->queue_depth + 1); 885 886 itnim->last_ramp_up_time = jiffies; 887 } 888 } 889 } 890 } 891 892 void 893 bfad_handle_qfull(struct bfad_itnim_s *itnim, struct scsi_device *sdev) 894 { 895 struct scsi_device *tmp_sdev; 896 897 itnim->last_queue_full_time = jiffies; 898 899 shost_for_each_device(tmp_sdev, sdev->host) { 900 if (tmp_sdev->id != sdev->id) 901 continue; 902 scsi_track_queue_full(tmp_sdev, tmp_sdev->queue_depth - 1); 903 } 904 } 905 906 struct bfad_itnim_s * 907 bfad_get_itnim(struct bfad_im_port_s *im_port, int id) 908 { 909 struct bfad_itnim_s *itnim = NULL; 910 911 /* Search the mapped list for this target ID */ 912 list_for_each_entry(itnim, &im_port->itnim_mapped_list, list_entry) { 913 if (id == itnim->scsi_tgt_id) 914 return itnim; 915 } 916 917 return NULL; 918 } 919 920 /* 921 * Function is invoked from the SCSI Host Template slave_alloc() entry point. 922 * Has the logic to query the LUN Mask database to check if this LUN needs to 923 * be made visible to the SCSI mid-layer or not. 924 * 925 * Returns BFA_STATUS_OK if this LUN needs to be added to the OS stack. 926 * Returns -ENXIO to notify SCSI mid-layer to not add this LUN to the OS stack. 927 */ 928 static int 929 bfad_im_check_if_make_lun_visible(struct scsi_device *sdev, 930 struct fc_rport *rport) 931 { 932 struct bfad_itnim_data_s *itnim_data = 933 (struct bfad_itnim_data_s *) rport->dd_data; 934 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa; 935 struct bfa_rport_s *bfa_rport = itnim_data->itnim->bfa_itnim->rport; 936 struct bfa_lun_mask_s *lun_list = bfa_get_lun_mask_list(bfa); 937 int i = 0, ret = -ENXIO; 938 939 for (i = 0; i < MAX_LUN_MASK_CFG; i++) { 940 if (lun_list[i].state == BFA_IOIM_LUN_MASK_ACTIVE && 941 scsilun_to_int(&lun_list[i].lun) == sdev->lun && 942 lun_list[i].rp_tag == bfa_rport->rport_tag && 943 lun_list[i].lp_tag == (u8)bfa_rport->rport_info.lp_tag) { 944 ret = BFA_STATUS_OK; 945 break; 946 } 947 } 948 return ret; 949 } 950 951 /* 952 * Scsi_Host template entry slave_alloc 953 */ 954 static int 955 bfad_im_slave_alloc(struct scsi_device *sdev) 956 { 957 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 958 struct bfad_itnim_data_s *itnim_data = 959 (struct bfad_itnim_data_s *) rport->dd_data; 960 struct bfa_s *bfa = itnim_data->itnim->bfa_itnim->bfa; 961 962 if (!rport || fc_remote_port_chkready(rport)) 963 return -ENXIO; 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 static 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 strncpy(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 sg_cnt = scsi_dma_map(cmnd); 1224 if (sg_cnt < 0) 1225 return SCSI_MLQUEUE_HOST_BUSY; 1226 1227 cmnd->scsi_done = done; 1228 1229 spin_lock_irqsave(&bfad->bfad_lock, flags); 1230 if (!(bfad->bfad_flags & BFAD_HAL_START_DONE)) { 1231 printk(KERN_WARNING 1232 "bfad%d, queuecommand %p %x failed, BFA stopped\n", 1233 bfad->inst_no, cmnd, cmnd->cmnd[0]); 1234 cmnd->result = ScsiResult(DID_NO_CONNECT, 0); 1235 goto out_fail_cmd; 1236 } 1237 1238 1239 itnim = itnim_data->itnim; 1240 if (!itnim) { 1241 cmnd->result = ScsiResult(DID_IMM_RETRY, 0); 1242 goto out_fail_cmd; 1243 } 1244 1245 hal_io = bfa_ioim_alloc(&bfad->bfa, (struct bfad_ioim_s *) cmnd, 1246 itnim->bfa_itnim, sg_cnt); 1247 if (!hal_io) { 1248 printk(KERN_WARNING "hal_io failure\n"); 1249 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 1250 scsi_dma_unmap(cmnd); 1251 return SCSI_MLQUEUE_HOST_BUSY; 1252 } 1253 1254 cmnd->host_scribble = (char *)hal_io; 1255 bfa_ioim_start(hal_io); 1256 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 1257 1258 return 0; 1259 1260 out_fail_cmd: 1261 spin_unlock_irqrestore(&bfad->bfad_lock, flags); 1262 scsi_dma_unmap(cmnd); 1263 if (done) 1264 done(cmnd); 1265 1266 return 0; 1267 } 1268 1269 static DEF_SCSI_QCMD(bfad_im_queuecommand) 1270 1271 void 1272 bfad_rport_online_wait(struct bfad_s *bfad) 1273 { 1274 int i; 1275 int rport_delay = 10; 1276 1277 for (i = 0; !(bfad->bfad_flags & BFAD_PORT_ONLINE) 1278 && i < bfa_linkup_delay; i++) { 1279 set_current_state(TASK_UNINTERRUPTIBLE); 1280 schedule_timeout(HZ); 1281 } 1282 1283 if (bfad->bfad_flags & BFAD_PORT_ONLINE) { 1284 rport_delay = rport_delay < bfa_linkup_delay ? 1285 rport_delay : bfa_linkup_delay; 1286 for (i = 0; !(bfad->bfad_flags & BFAD_RPORT_ONLINE) 1287 && i < rport_delay; i++) { 1288 set_current_state(TASK_UNINTERRUPTIBLE); 1289 schedule_timeout(HZ); 1290 } 1291 1292 if (rport_delay > 0 && (bfad->bfad_flags & BFAD_RPORT_ONLINE)) { 1293 set_current_state(TASK_UNINTERRUPTIBLE); 1294 schedule_timeout(rport_delay * HZ); 1295 } 1296 } 1297 } 1298 1299 int 1300 bfad_get_linkup_delay(struct bfad_s *bfad) 1301 { 1302 u8 nwwns = 0; 1303 wwn_t wwns[BFA_PREBOOT_BOOTLUN_MAX]; 1304 int linkup_delay; 1305 1306 /* 1307 * Querying for the boot target port wwns 1308 * -- read from boot information in flash. 1309 * If nwwns > 0 => boot over SAN and set linkup_delay = 30 1310 * else => local boot machine set linkup_delay = 0 1311 */ 1312 1313 bfa_iocfc_get_bootwwns(&bfad->bfa, &nwwns, wwns); 1314 1315 if (nwwns > 0) 1316 /* If Boot over SAN set linkup_delay = 30sec */ 1317 linkup_delay = 30; 1318 else 1319 /* If local boot; no linkup_delay */ 1320 linkup_delay = 0; 1321 1322 return linkup_delay; 1323 } 1324