1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright 2008 Cisco Systems, Inc. All rights reserved. 4 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 5 */ 6 #include <linux/module.h> 7 #include <linux/mempool.h> 8 #include <linux/string.h> 9 #include <linux/slab.h> 10 #include <linux/errno.h> 11 #include <linux/init.h> 12 #include <linux/pci.h> 13 #include <linux/skbuff.h> 14 #include <linux/interrupt.h> 15 #include <linux/irq.h> 16 #include <linux/spinlock.h> 17 #include <linux/workqueue.h> 18 #include <linux/if_ether.h> 19 #include <scsi/fc/fc_fip.h> 20 #include <scsi/scsi_host.h> 21 #include <scsi/scsi_transport.h> 22 #include <scsi/scsi_transport_fc.h> 23 #include <scsi/scsi_tcq.h> 24 #include <scsi/libfc.h> 25 #include <scsi/fc_frame.h> 26 27 #include "vnic_dev.h" 28 #include "vnic_intr.h" 29 #include "vnic_stats.h" 30 #include "fnic_io.h" 31 #include "fnic_fip.h" 32 #include "fnic.h" 33 34 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045 35 36 /* Timer to poll notification area for events. Used for MSI interrupts */ 37 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ) 38 39 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; 40 static struct kmem_cache *fnic_io_req_cache; 41 static LIST_HEAD(fnic_list); 42 static DEFINE_SPINLOCK(fnic_list_lock); 43 static DEFINE_IDA(fnic_ida); 44 45 /* Supported devices by fnic module */ 46 static struct pci_device_id fnic_id_table[] = { 47 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, 48 { 0, } 49 }; 50 51 MODULE_DESCRIPTION(DRV_DESCRIPTION); 52 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " 53 "Joseph R. Eykholt <jeykholt@cisco.com>"); 54 MODULE_LICENSE("GPL v2"); 55 MODULE_VERSION(DRV_VERSION); 56 MODULE_DEVICE_TABLE(pci, fnic_id_table); 57 58 unsigned int fnic_log_level; 59 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); 60 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); 61 62 63 unsigned int io_completions = FNIC_DFLT_IO_COMPLETIONS; 64 module_param(io_completions, int, S_IRUGO|S_IWUSR); 65 MODULE_PARM_DESC(io_completions, "Max CQ entries to process at a time"); 66 67 unsigned int fnic_trace_max_pages = 16; 68 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR); 69 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages " 70 "for fnic trace buffer"); 71 72 unsigned int fnic_fc_trace_max_pages = 64; 73 module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR); 74 MODULE_PARM_DESC(fnic_fc_trace_max_pages, 75 "Total allocated memory pages for fc trace buffer"); 76 77 static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH; 78 module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR); 79 MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN"); 80 81 static struct libfc_function_template fnic_transport_template = { 82 .frame_send = fnic_send, 83 .lport_set_port_id = fnic_set_port_id, 84 .fcp_abort_io = fnic_empty_scsi_cleanup, 85 .fcp_cleanup = fnic_empty_scsi_cleanup, 86 .exch_mgr_reset = fnic_exch_mgr_reset 87 }; 88 89 static int fnic_slave_alloc(struct scsi_device *sdev) 90 { 91 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 92 93 if (!rport || fc_remote_port_chkready(rport)) 94 return -ENXIO; 95 96 scsi_change_queue_depth(sdev, fnic_max_qdepth); 97 return 0; 98 } 99 100 static const struct scsi_host_template fnic_host_template = { 101 .module = THIS_MODULE, 102 .name = DRV_NAME, 103 .queuecommand = fnic_queuecommand, 104 .eh_timed_out = fc_eh_timed_out, 105 .eh_abort_handler = fnic_abort_cmd, 106 .eh_device_reset_handler = fnic_device_reset, 107 .eh_host_reset_handler = fnic_host_reset, 108 .slave_alloc = fnic_slave_alloc, 109 .change_queue_depth = scsi_change_queue_depth, 110 .this_id = -1, 111 .cmd_per_lun = 3, 112 .can_queue = FNIC_DFLT_IO_REQ, 113 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 114 .max_sectors = 0xffff, 115 .shost_groups = fnic_host_groups, 116 .track_queue_depth = 1, 117 .cmd_size = sizeof(struct fnic_cmd_priv), 118 .map_queues = fnic_mq_map_queues_cpus, 119 }; 120 121 static void 122 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 123 { 124 if (timeout) 125 rport->dev_loss_tmo = timeout; 126 else 127 rport->dev_loss_tmo = 1; 128 } 129 130 static void fnic_get_host_speed(struct Scsi_Host *shost); 131 static struct scsi_transport_template *fnic_fc_transport; 132 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 133 static void fnic_reset_host_stats(struct Scsi_Host *); 134 135 static struct fc_function_template fnic_fc_functions = { 136 137 .show_host_node_name = 1, 138 .show_host_port_name = 1, 139 .show_host_supported_classes = 1, 140 .show_host_supported_fc4s = 1, 141 .show_host_active_fc4s = 1, 142 .show_host_maxframe_size = 1, 143 .show_host_port_id = 1, 144 .show_host_supported_speeds = 1, 145 .get_host_speed = fnic_get_host_speed, 146 .show_host_speed = 1, 147 .show_host_port_type = 1, 148 .get_host_port_state = fc_get_host_port_state, 149 .show_host_port_state = 1, 150 .show_host_symbolic_name = 1, 151 .show_rport_maxframe_size = 1, 152 .show_rport_supported_classes = 1, 153 .show_host_fabric_name = 1, 154 .show_starget_node_name = 1, 155 .show_starget_port_name = 1, 156 .show_starget_port_id = 1, 157 .show_rport_dev_loss_tmo = 1, 158 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo, 159 .issue_fc_host_lip = fnic_reset, 160 .get_fc_host_stats = fnic_get_stats, 161 .reset_fc_host_stats = fnic_reset_host_stats, 162 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), 163 .terminate_rport_io = fnic_terminate_rport_io, 164 .bsg_request = fc_lport_bsg_request, 165 }; 166 167 static void fnic_get_host_speed(struct Scsi_Host *shost) 168 { 169 struct fc_lport *lp = shost_priv(shost); 170 struct fnic *fnic = lport_priv(lp); 171 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 172 173 /* Add in other values as they get defined in fw */ 174 switch (port_speed) { 175 case DCEM_PORTSPEED_10G: 176 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 177 break; 178 case DCEM_PORTSPEED_20G: 179 fc_host_speed(shost) = FC_PORTSPEED_20GBIT; 180 break; 181 case DCEM_PORTSPEED_25G: 182 fc_host_speed(shost) = FC_PORTSPEED_25GBIT; 183 break; 184 case DCEM_PORTSPEED_40G: 185 case DCEM_PORTSPEED_4x10G: 186 fc_host_speed(shost) = FC_PORTSPEED_40GBIT; 187 break; 188 case DCEM_PORTSPEED_100G: 189 fc_host_speed(shost) = FC_PORTSPEED_100GBIT; 190 break; 191 default: 192 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 193 break; 194 } 195 } 196 197 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 198 { 199 int ret; 200 struct fc_lport *lp = shost_priv(host); 201 struct fnic *fnic = lport_priv(lp); 202 struct fc_host_statistics *stats = &lp->host_stats; 203 struct vnic_stats *vs; 204 unsigned long flags; 205 206 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 207 return stats; 208 fnic->stats_time = jiffies; 209 210 spin_lock_irqsave(&fnic->fnic_lock, flags); 211 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 212 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 213 214 if (ret) { 215 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, fnic->fnic_num, 216 "fnic: Get vnic stats failed" 217 " 0x%x", ret); 218 return stats; 219 } 220 vs = fnic->stats; 221 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 222 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 223 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 224 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 225 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 226 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 227 stats->invalid_crc_count = vs->rx.rx_crc_errors; 228 stats->seconds_since_last_reset = 229 (jiffies - fnic->stats_reset_time) / HZ; 230 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 231 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 232 233 return stats; 234 } 235 236 /* 237 * fnic_dump_fchost_stats 238 * note : dumps fc_statistics into system logs 239 */ 240 void fnic_dump_fchost_stats(struct Scsi_Host *host, 241 struct fc_host_statistics *stats) 242 { 243 FNIC_MAIN_NOTE(KERN_NOTICE, host, 244 "fnic: seconds since last reset = %llu\n", 245 stats->seconds_since_last_reset); 246 FNIC_MAIN_NOTE(KERN_NOTICE, host, 247 "fnic: tx frames = %llu\n", 248 stats->tx_frames); 249 FNIC_MAIN_NOTE(KERN_NOTICE, host, 250 "fnic: tx words = %llu\n", 251 stats->tx_words); 252 FNIC_MAIN_NOTE(KERN_NOTICE, host, 253 "fnic: rx frames = %llu\n", 254 stats->rx_frames); 255 FNIC_MAIN_NOTE(KERN_NOTICE, host, 256 "fnic: rx words = %llu\n", 257 stats->rx_words); 258 FNIC_MAIN_NOTE(KERN_NOTICE, host, 259 "fnic: lip count = %llu\n", 260 stats->lip_count); 261 FNIC_MAIN_NOTE(KERN_NOTICE, host, 262 "fnic: nos count = %llu\n", 263 stats->nos_count); 264 FNIC_MAIN_NOTE(KERN_NOTICE, host, 265 "fnic: error frames = %llu\n", 266 stats->error_frames); 267 FNIC_MAIN_NOTE(KERN_NOTICE, host, 268 "fnic: dumped frames = %llu\n", 269 stats->dumped_frames); 270 FNIC_MAIN_NOTE(KERN_NOTICE, host, 271 "fnic: link failure count = %llu\n", 272 stats->link_failure_count); 273 FNIC_MAIN_NOTE(KERN_NOTICE, host, 274 "fnic: loss of sync count = %llu\n", 275 stats->loss_of_sync_count); 276 FNIC_MAIN_NOTE(KERN_NOTICE, host, 277 "fnic: loss of signal count = %llu\n", 278 stats->loss_of_signal_count); 279 FNIC_MAIN_NOTE(KERN_NOTICE, host, 280 "fnic: prim seq protocol err count = %llu\n", 281 stats->prim_seq_protocol_err_count); 282 FNIC_MAIN_NOTE(KERN_NOTICE, host, 283 "fnic: invalid tx word count= %llu\n", 284 stats->invalid_tx_word_count); 285 FNIC_MAIN_NOTE(KERN_NOTICE, host, 286 "fnic: invalid crc count = %llu\n", 287 stats->invalid_crc_count); 288 FNIC_MAIN_NOTE(KERN_NOTICE, host, 289 "fnic: fcp input requests = %llu\n", 290 stats->fcp_input_requests); 291 FNIC_MAIN_NOTE(KERN_NOTICE, host, 292 "fnic: fcp output requests = %llu\n", 293 stats->fcp_output_requests); 294 FNIC_MAIN_NOTE(KERN_NOTICE, host, 295 "fnic: fcp control requests = %llu\n", 296 stats->fcp_control_requests); 297 FNIC_MAIN_NOTE(KERN_NOTICE, host, 298 "fnic: fcp input megabytes = %llu\n", 299 stats->fcp_input_megabytes); 300 FNIC_MAIN_NOTE(KERN_NOTICE, host, 301 "fnic: fcp output megabytes = %llu\n", 302 stats->fcp_output_megabytes); 303 return; 304 } 305 306 /* 307 * fnic_reset_host_stats : clears host stats 308 * note : called when reset_statistics set under sysfs dir 309 */ 310 static void fnic_reset_host_stats(struct Scsi_Host *host) 311 { 312 int ret; 313 struct fc_lport *lp = shost_priv(host); 314 struct fnic *fnic = lport_priv(lp); 315 struct fc_host_statistics *stats; 316 unsigned long flags; 317 318 /* dump current stats, before clearing them */ 319 stats = fnic_get_stats(host); 320 fnic_dump_fchost_stats(host, stats); 321 322 spin_lock_irqsave(&fnic->fnic_lock, flags); 323 ret = vnic_dev_stats_clear(fnic->vdev); 324 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 325 326 if (ret) { 327 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, fnic->fnic_num, 328 "fnic: Reset vnic stats failed" 329 " 0x%x", ret); 330 return; 331 } 332 fnic->stats_reset_time = jiffies; 333 memset(stats, 0, sizeof(*stats)); 334 335 return; 336 } 337 338 void fnic_log_q_error(struct fnic *fnic) 339 { 340 unsigned int i; 341 u32 error_status; 342 343 for (i = 0; i < fnic->raw_wq_count; i++) { 344 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 345 if (error_status) 346 shost_printk(KERN_ERR, fnic->lport->host, 347 "WQ[%d] error_status" 348 " %d\n", i, error_status); 349 } 350 351 for (i = 0; i < fnic->rq_count; i++) { 352 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 353 if (error_status) 354 shost_printk(KERN_ERR, fnic->lport->host, 355 "RQ[%d] error_status" 356 " %d\n", i, error_status); 357 } 358 359 for (i = 0; i < fnic->wq_copy_count; i++) { 360 error_status = ioread32(&fnic->hw_copy_wq[i].ctrl->error_status); 361 if (error_status) 362 shost_printk(KERN_ERR, fnic->lport->host, 363 "CWQ[%d] error_status" 364 " %d\n", i, error_status); 365 } 366 } 367 368 void fnic_handle_link_event(struct fnic *fnic) 369 { 370 unsigned long flags; 371 372 spin_lock_irqsave(&fnic->fnic_lock, flags); 373 if (fnic->stop_rx_link_events) { 374 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 375 return; 376 } 377 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 378 379 queue_work(fnic_event_queue, &fnic->link_work); 380 381 } 382 383 static int fnic_notify_set(struct fnic *fnic) 384 { 385 int err; 386 387 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 388 case VNIC_DEV_INTR_MODE_INTX: 389 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 390 break; 391 case VNIC_DEV_INTR_MODE_MSI: 392 err = vnic_dev_notify_set(fnic->vdev, -1); 393 break; 394 case VNIC_DEV_INTR_MODE_MSIX: 395 err = vnic_dev_notify_set(fnic->vdev, fnic->wq_copy_count + fnic->copy_wq_base); 396 break; 397 default: 398 shost_printk(KERN_ERR, fnic->lport->host, 399 "Interrupt mode should be set up" 400 " before devcmd notify set %d\n", 401 vnic_dev_get_intr_mode(fnic->vdev)); 402 err = -1; 403 break; 404 } 405 406 return err; 407 } 408 409 static void fnic_notify_timer(struct timer_list *t) 410 { 411 struct fnic *fnic = from_timer(fnic, t, notify_timer); 412 413 fnic_handle_link_event(fnic); 414 mod_timer(&fnic->notify_timer, 415 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 416 } 417 418 static void fnic_fip_notify_timer(struct timer_list *t) 419 { 420 struct fnic *fnic = from_timer(fnic, t, fip_timer); 421 422 fnic_handle_fip_timer(fnic); 423 } 424 425 static void fnic_notify_timer_start(struct fnic *fnic) 426 { 427 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 428 case VNIC_DEV_INTR_MODE_MSI: 429 /* 430 * Schedule first timeout immediately. The driver is 431 * initiatialized and ready to look for link up notification 432 */ 433 mod_timer(&fnic->notify_timer, jiffies); 434 break; 435 default: 436 /* Using intr for notification for INTx/MSI-X */ 437 break; 438 } 439 } 440 441 static int fnic_dev_wait(struct vnic_dev *vdev, 442 int (*start)(struct vnic_dev *, int), 443 int (*finished)(struct vnic_dev *, int *), 444 int arg) 445 { 446 unsigned long time; 447 int done; 448 int err; 449 int count; 450 451 count = 0; 452 453 err = start(vdev, arg); 454 if (err) 455 return err; 456 457 /* Wait for func to complete. 458 * Sometime schedule_timeout_uninterruptible take long time 459 * to wake up so we do not retry as we are only waiting for 460 * 2 seconds in while loop. By adding count, we make sure 461 * we try atleast three times before returning -ETIMEDOUT 462 */ 463 time = jiffies + (HZ * 2); 464 do { 465 err = finished(vdev, &done); 466 count++; 467 if (err) 468 return err; 469 if (done) 470 return 0; 471 schedule_timeout_uninterruptible(HZ / 10); 472 } while (time_after(time, jiffies) || (count < 3)); 473 474 return -ETIMEDOUT; 475 } 476 477 static int fnic_cleanup(struct fnic *fnic) 478 { 479 unsigned int i; 480 int err; 481 int raw_wq_rq_counts; 482 483 vnic_dev_disable(fnic->vdev); 484 for (i = 0; i < fnic->intr_count; i++) 485 vnic_intr_mask(&fnic->intr[i]); 486 487 for (i = 0; i < fnic->rq_count; i++) { 488 err = vnic_rq_disable(&fnic->rq[i]); 489 if (err) 490 return err; 491 } 492 for (i = 0; i < fnic->raw_wq_count; i++) { 493 err = vnic_wq_disable(&fnic->wq[i]); 494 if (err) 495 return err; 496 } 497 for (i = 0; i < fnic->wq_copy_count; i++) { 498 err = vnic_wq_copy_disable(&fnic->hw_copy_wq[i]); 499 if (err) 500 return err; 501 raw_wq_rq_counts = fnic->raw_wq_count + fnic->rq_count; 502 fnic_wq_copy_cmpl_handler(fnic, -1, i + raw_wq_rq_counts); 503 } 504 505 /* Clean up completed IOs and FCS frames */ 506 fnic_wq_cmpl_handler(fnic, -1); 507 fnic_rq_cmpl_handler(fnic, -1); 508 509 /* Clean up the IOs and FCS frames that have not completed */ 510 for (i = 0; i < fnic->raw_wq_count; i++) 511 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 512 for (i = 0; i < fnic->rq_count; i++) 513 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 514 for (i = 0; i < fnic->wq_copy_count; i++) 515 vnic_wq_copy_clean(&fnic->hw_copy_wq[i], 516 fnic_wq_copy_cleanup_handler); 517 518 for (i = 0; i < fnic->cq_count; i++) 519 vnic_cq_clean(&fnic->cq[i]); 520 for (i = 0; i < fnic->intr_count; i++) 521 vnic_intr_clean(&fnic->intr[i]); 522 523 mempool_destroy(fnic->io_req_pool); 524 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 525 mempool_destroy(fnic->io_sgl_pool[i]); 526 527 return 0; 528 } 529 530 static void fnic_iounmap(struct fnic *fnic) 531 { 532 if (fnic->bar0.vaddr) 533 iounmap(fnic->bar0.vaddr); 534 } 535 536 /** 537 * fnic_get_mac() - get assigned data MAC address for FIP code. 538 * @lport: local port. 539 */ 540 static u8 *fnic_get_mac(struct fc_lport *lport) 541 { 542 struct fnic *fnic = lport_priv(lport); 543 544 return fnic->data_src_addr; 545 } 546 547 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id) 548 { 549 vnic_dev_set_default_vlan(fnic->vdev, vlan_id); 550 } 551 552 static int fnic_scsi_drv_init(struct fnic *fnic) 553 { 554 struct Scsi_Host *host = fnic->lport->host; 555 556 /* Configure maximum outstanding IO reqs*/ 557 if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) 558 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ, 559 max_t(u32, FNIC_MIN_IO_REQ, 560 fnic->config.io_throttle_count)); 561 562 fnic->fnic_max_tag_id = host->can_queue; 563 host->max_lun = fnic->config.luns_per_tgt; 564 host->max_id = FNIC_MAX_FCP_TARGET; 565 host->max_cmd_len = FCOE_MAX_CMD_LEN; 566 567 host->nr_hw_queues = fnic->wq_copy_count; 568 569 shost_printk(KERN_INFO, host, 570 "fnic: can_queue: %d max_lun: %llu", 571 host->can_queue, host->max_lun); 572 573 shost_printk(KERN_INFO, host, 574 "fnic: max_id: %d max_cmd_len: %d nr_hw_queues: %d", 575 host->max_id, host->max_cmd_len, host->nr_hw_queues); 576 577 return 0; 578 } 579 580 void fnic_mq_map_queues_cpus(struct Scsi_Host *host) 581 { 582 struct fc_lport *lp = shost_priv(host); 583 struct fnic *fnic = lport_priv(lp); 584 struct pci_dev *l_pdev = fnic->pdev; 585 int intr_mode = fnic->config.intr_mode; 586 struct blk_mq_queue_map *qmap = &host->tag_set.map[HCTX_TYPE_DEFAULT]; 587 588 if (intr_mode == VNIC_DEV_INTR_MODE_MSI || intr_mode == VNIC_DEV_INTR_MODE_INTX) { 589 FNIC_MAIN_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num, 590 "intr_mode is not msix\n"); 591 return; 592 } 593 594 FNIC_MAIN_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num, 595 "qmap->nr_queues: %d\n", qmap->nr_queues); 596 597 if (l_pdev == NULL) { 598 FNIC_MAIN_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num, 599 "l_pdev is null\n"); 600 return; 601 } 602 603 blk_mq_map_hw_queues(qmap, &l_pdev->dev, FNIC_PCI_OFFSET); 604 } 605 606 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 607 { 608 struct Scsi_Host *host; 609 struct fc_lport *lp; 610 struct fnic *fnic; 611 mempool_t *pool; 612 int err = 0; 613 int fnic_id = 0; 614 int i; 615 unsigned long flags; 616 int hwq; 617 618 /* 619 * Allocate SCSI Host and set up association between host, 620 * local port, and fnic 621 */ 622 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic)); 623 if (!lp) { 624 printk(KERN_ERR PFX "Unable to alloc libfc local port\n"); 625 err = -ENOMEM; 626 goto err_out; 627 } 628 629 host = lp->host; 630 fnic = lport_priv(lp); 631 632 fnic_id = ida_alloc(&fnic_ida, GFP_KERNEL); 633 if (fnic_id < 0) { 634 pr_err("Unable to alloc fnic ID\n"); 635 err = fnic_id; 636 goto err_out_ida_alloc; 637 } 638 fnic->lport = lp; 639 fnic->ctlr.lp = lp; 640 fnic->link_events = 0; 641 fnic->pdev = pdev; 642 643 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 644 host->host_no); 645 646 host->transportt = fnic_fc_transport; 647 fnic->fnic_num = fnic_id; 648 fnic_stats_debugfs_init(fnic); 649 650 err = pci_enable_device(pdev); 651 if (err) { 652 shost_printk(KERN_ERR, fnic->lport->host, 653 "Cannot enable PCI device, aborting.\n"); 654 goto err_out_free_hba; 655 } 656 657 err = pci_request_regions(pdev, DRV_NAME); 658 if (err) { 659 shost_printk(KERN_ERR, fnic->lport->host, 660 "Cannot enable PCI resources, aborting\n"); 661 goto err_out_disable_device; 662 } 663 664 pci_set_master(pdev); 665 666 /* Query PCI controller on system for DMA addressing 667 * limitation for the device. Try 47-bit first, and 668 * fail to 32-bit. Cisco VIC supports 47 bits only. 669 */ 670 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(47)); 671 if (err) { 672 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 673 if (err) { 674 shost_printk(KERN_ERR, fnic->lport->host, 675 "No usable DMA configuration " 676 "aborting\n"); 677 goto err_out_release_regions; 678 } 679 } 680 681 /* Map vNIC resources from BAR0 */ 682 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 683 shost_printk(KERN_ERR, fnic->lport->host, 684 "BAR0 not memory-map'able, aborting.\n"); 685 err = -ENODEV; 686 goto err_out_release_regions; 687 } 688 689 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 690 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 691 fnic->bar0.len = pci_resource_len(pdev, 0); 692 693 if (!fnic->bar0.vaddr) { 694 shost_printk(KERN_ERR, fnic->lport->host, 695 "Cannot memory-map BAR0 res hdr, " 696 "aborting.\n"); 697 err = -ENODEV; 698 goto err_out_release_regions; 699 } 700 701 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 702 if (!fnic->vdev) { 703 shost_printk(KERN_ERR, fnic->lport->host, 704 "vNIC registration failed, " 705 "aborting.\n"); 706 err = -ENODEV; 707 goto err_out_iounmap; 708 } 709 710 err = vnic_dev_cmd_init(fnic->vdev); 711 if (err) { 712 shost_printk(KERN_ERR, fnic->lport->host, 713 "vnic_dev_cmd_init() returns %d, aborting\n", 714 err); 715 goto err_out_vnic_unregister; 716 } 717 718 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 719 vnic_dev_open_done, CMD_OPENF_RQ_ENABLE_THEN_POST); 720 if (err) { 721 shost_printk(KERN_ERR, fnic->lport->host, 722 "vNIC dev open failed, aborting.\n"); 723 goto err_out_dev_cmd_deinit; 724 } 725 726 err = vnic_dev_init(fnic->vdev, 0); 727 if (err) { 728 shost_printk(KERN_ERR, fnic->lport->host, 729 "vNIC dev init failed, aborting.\n"); 730 goto err_out_dev_close; 731 } 732 733 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 734 if (err) { 735 shost_printk(KERN_ERR, fnic->lport->host, 736 "vNIC get MAC addr failed \n"); 737 goto err_out_dev_close; 738 } 739 /* set data_src for point-to-point mode and to keep it non-zero */ 740 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN); 741 742 /* Get vNIC configuration */ 743 err = fnic_get_vnic_config(fnic); 744 if (err) { 745 shost_printk(KERN_ERR, fnic->lport->host, 746 "Get vNIC configuration failed, " 747 "aborting.\n"); 748 goto err_out_dev_close; 749 } 750 751 /* Setup PCI resources */ 752 pci_set_drvdata(pdev, fnic); 753 754 fnic_get_res_counts(fnic); 755 756 err = fnic_set_intr_mode(fnic); 757 if (err) { 758 shost_printk(KERN_ERR, fnic->lport->host, 759 "Failed to set intr mode, " 760 "aborting.\n"); 761 goto err_out_dev_close; 762 } 763 764 err = fnic_alloc_vnic_resources(fnic); 765 if (err) { 766 shost_printk(KERN_ERR, fnic->lport->host, 767 "Failed to alloc vNIC resources, " 768 "aborting.\n"); 769 goto err_out_clear_intr; 770 } 771 772 fnic_scsi_drv_init(fnic); 773 774 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) { 775 fnic->sw_copy_wq[hwq].ioreq_table_size = fnic->fnic_max_tag_id; 776 fnic->sw_copy_wq[hwq].io_req_table = 777 kzalloc((fnic->sw_copy_wq[hwq].ioreq_table_size + 1) * 778 sizeof(struct fnic_io_req *), GFP_KERNEL); 779 } 780 shost_printk(KERN_INFO, fnic->lport->host, "fnic copy wqs: %d, Q0 ioreq table size: %d\n", 781 fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size); 782 783 /* initialize all fnic locks */ 784 spin_lock_init(&fnic->fnic_lock); 785 786 for (i = 0; i < FNIC_WQ_MAX; i++) 787 spin_lock_init(&fnic->wq_lock[i]); 788 789 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 790 spin_lock_init(&fnic->wq_copy_lock[i]); 791 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 792 fnic->fw_ack_recd[i] = 0; 793 fnic->fw_ack_index[i] = -1; 794 } 795 796 err = -ENOMEM; 797 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 798 if (!fnic->io_req_pool) 799 goto err_out_free_resources; 800 801 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 802 if (!pool) 803 goto err_out_free_ioreq_pool; 804 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 805 806 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 807 if (!pool) 808 goto err_out_free_dflt_pool; 809 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 810 811 /* setup vlan config, hw inserts vlan header */ 812 fnic->vlan_hw_insert = 1; 813 fnic->vlan_id = 0; 814 815 /* Initialize the FIP fcoe_ctrl struct */ 816 fnic->ctlr.send = fnic_eth_send; 817 fnic->ctlr.update_mac = fnic_update_mac; 818 fnic->ctlr.get_src_addr = fnic_get_mac; 819 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 820 shost_printk(KERN_INFO, fnic->lport->host, 821 "firmware supports FIP\n"); 822 /* enable directed and multicast */ 823 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); 824 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 825 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 826 fnic->set_vlan = fnic_set_vlan; 827 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); 828 timer_setup(&fnic->fip_timer, fnic_fip_notify_timer, 0); 829 spin_lock_init(&fnic->vlans_lock); 830 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame); 831 INIT_WORK(&fnic->event_work, fnic_handle_event); 832 skb_queue_head_init(&fnic->fip_frame_queue); 833 INIT_LIST_HEAD(&fnic->evlist); 834 INIT_LIST_HEAD(&fnic->vlans); 835 } else { 836 shost_printk(KERN_INFO, fnic->lport->host, 837 "firmware uses non-FIP mode\n"); 838 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); 839 fnic->ctlr.state = FIP_ST_NON_FIP; 840 } 841 fnic->state = FNIC_IN_FC_MODE; 842 843 atomic_set(&fnic->in_flight, 0); 844 fnic->state_flags = FNIC_FLAGS_NONE; 845 846 /* Enable hardware stripping of vlan header on ingress */ 847 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 848 849 /* Setup notification buffer area */ 850 err = fnic_notify_set(fnic); 851 if (err) { 852 shost_printk(KERN_ERR, fnic->lport->host, 853 "Failed to alloc notify buffer, aborting.\n"); 854 goto err_out_free_max_pool; 855 } 856 857 /* Setup notify timer when using MSI interrupts */ 858 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 859 timer_setup(&fnic->notify_timer, fnic_notify_timer, 0); 860 861 /* allocate RQ buffers and post them to RQ*/ 862 for (i = 0; i < fnic->rq_count; i++) { 863 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 864 if (err) { 865 shost_printk(KERN_ERR, fnic->lport->host, 866 "fnic_alloc_rq_frame can't alloc " 867 "frame\n"); 868 goto err_out_rq_buf; 869 } 870 } 871 872 /* Enable all queues */ 873 for (i = 0; i < fnic->raw_wq_count; i++) 874 vnic_wq_enable(&fnic->wq[i]); 875 for (i = 0; i < fnic->rq_count; i++) { 876 if (!ioread32(&fnic->rq[i].ctrl->enable)) 877 vnic_rq_enable(&fnic->rq[i]); 878 } 879 for (i = 0; i < fnic->wq_copy_count; i++) 880 vnic_wq_copy_enable(&fnic->hw_copy_wq[i]); 881 882 err = fnic_request_intr(fnic); 883 if (err) { 884 shost_printk(KERN_ERR, fnic->lport->host, 885 "Unable to request irq.\n"); 886 goto err_out_request_intr; 887 } 888 889 /* 890 * Initialization done with PCI system, hardware, firmware. 891 * Add host to SCSI 892 */ 893 err = scsi_add_host(lp->host, &pdev->dev); 894 if (err) { 895 shost_printk(KERN_ERR, fnic->lport->host, 896 "fnic: scsi_add_host failed...exiting\n"); 897 goto err_out_scsi_add_host; 898 } 899 900 901 /* Start local port initiatialization */ 902 903 lp->link_up = 0; 904 905 lp->max_retry_count = fnic->config.flogi_retries; 906 lp->max_rport_retry_count = fnic->config.plogi_retries; 907 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 908 FCP_SPPF_CONF_COMPL); 909 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 910 lp->service_params |= FCP_SPPF_RETRY; 911 912 lp->boot_time = jiffies; 913 lp->e_d_tov = fnic->config.ed_tov; 914 lp->r_a_tov = fnic->config.ra_tov; 915 lp->link_supported_speeds = FC_PORTSPEED_10GBIT; 916 fc_set_wwnn(lp, fnic->config.node_wwn); 917 fc_set_wwpn(lp, fnic->config.port_wwn); 918 919 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); 920 921 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 922 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 923 err = -ENOMEM; 924 goto err_out_fc_exch_mgr_alloc; 925 } 926 927 fc_lport_init_stats(lp); 928 fnic->stats_reset_time = jiffies; 929 930 fc_lport_config(lp); 931 932 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + 933 sizeof(struct fc_frame_header))) { 934 err = -EINVAL; 935 goto err_out_free_exch_mgr; 936 } 937 fc_host_maxframe_size(lp->host) = lp->mfs; 938 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000; 939 940 sprintf(fc_host_symbolic_name(lp->host), 941 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 942 943 spin_lock_irqsave(&fnic_list_lock, flags); 944 list_add_tail(&fnic->list, &fnic_list); 945 spin_unlock_irqrestore(&fnic_list_lock, flags); 946 947 INIT_WORK(&fnic->link_work, fnic_handle_link); 948 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 949 INIT_WORK(&fnic->flush_work, fnic_flush_tx); 950 skb_queue_head_init(&fnic->frame_queue); 951 skb_queue_head_init(&fnic->tx_queue); 952 953 fc_fabric_login(lp); 954 955 vnic_dev_enable(fnic->vdev); 956 957 for (i = 0; i < fnic->intr_count; i++) 958 vnic_intr_unmask(&fnic->intr[i]); 959 960 fnic_notify_timer_start(fnic); 961 962 return 0; 963 964 err_out_free_exch_mgr: 965 fc_exch_mgr_free(lp); 966 err_out_fc_exch_mgr_alloc: 967 fc_remove_host(lp->host); 968 scsi_remove_host(lp->host); 969 err_out_scsi_add_host: 970 fnic_free_intr(fnic); 971 err_out_request_intr: 972 for (i = 0; i < fnic->rq_count; i++) 973 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 974 err_out_rq_buf: 975 vnic_dev_notify_unset(fnic->vdev); 976 err_out_free_max_pool: 977 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 978 err_out_free_dflt_pool: 979 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 980 err_out_free_ioreq_pool: 981 mempool_destroy(fnic->io_req_pool); 982 err_out_free_resources: 983 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) 984 kfree(fnic->sw_copy_wq[hwq].io_req_table); 985 fnic_free_vnic_resources(fnic); 986 err_out_clear_intr: 987 fnic_clear_intr_mode(fnic); 988 err_out_dev_close: 989 vnic_dev_close(fnic->vdev); 990 err_out_dev_cmd_deinit: 991 err_out_vnic_unregister: 992 vnic_dev_unregister(fnic->vdev); 993 err_out_iounmap: 994 fnic_iounmap(fnic); 995 err_out_release_regions: 996 pci_release_regions(pdev); 997 err_out_disable_device: 998 pci_disable_device(pdev); 999 err_out_free_hba: 1000 fnic_stats_debugfs_remove(fnic); 1001 ida_free(&fnic_ida, fnic->fnic_num); 1002 err_out_ida_alloc: 1003 scsi_host_put(lp->host); 1004 err_out: 1005 return err; 1006 } 1007 1008 static void fnic_remove(struct pci_dev *pdev) 1009 { 1010 struct fnic *fnic = pci_get_drvdata(pdev); 1011 struct fc_lport *lp = fnic->lport; 1012 unsigned long flags; 1013 int hwq; 1014 1015 /* 1016 * Mark state so that the workqueue thread stops forwarding 1017 * received frames and link events to the local port. ISR and 1018 * other threads that can queue work items will also stop 1019 * creating work items on the fnic workqueue 1020 */ 1021 spin_lock_irqsave(&fnic->fnic_lock, flags); 1022 fnic->stop_rx_link_events = 1; 1023 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 1024 1025 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 1026 del_timer_sync(&fnic->notify_timer); 1027 1028 /* 1029 * Flush the fnic event queue. After this call, there should 1030 * be no event queued for this fnic device in the workqueue 1031 */ 1032 flush_workqueue(fnic_event_queue); 1033 skb_queue_purge(&fnic->frame_queue); 1034 skb_queue_purge(&fnic->tx_queue); 1035 1036 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 1037 del_timer_sync(&fnic->fip_timer); 1038 skb_queue_purge(&fnic->fip_frame_queue); 1039 fnic_fcoe_reset_vlans(fnic); 1040 fnic_fcoe_evlist_free(fnic); 1041 } 1042 1043 /* 1044 * Log off the fabric. This stops all remote ports, dns port, 1045 * logs off the fabric. This flushes all rport, disc, lport work 1046 * before returning 1047 */ 1048 fc_fabric_logoff(fnic->lport); 1049 1050 spin_lock_irqsave(&fnic->fnic_lock, flags); 1051 fnic->in_remove = 1; 1052 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 1053 1054 fcoe_ctlr_destroy(&fnic->ctlr); 1055 fc_lport_destroy(lp); 1056 fnic_stats_debugfs_remove(fnic); 1057 1058 /* 1059 * This stops the fnic device, masks all interrupts. Completed 1060 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 1061 * cleaned up 1062 */ 1063 fnic_cleanup(fnic); 1064 1065 BUG_ON(!skb_queue_empty(&fnic->frame_queue)); 1066 BUG_ON(!skb_queue_empty(&fnic->tx_queue)); 1067 1068 spin_lock_irqsave(&fnic_list_lock, flags); 1069 list_del(&fnic->list); 1070 spin_unlock_irqrestore(&fnic_list_lock, flags); 1071 1072 fc_remove_host(fnic->lport->host); 1073 scsi_remove_host(fnic->lport->host); 1074 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) 1075 kfree(fnic->sw_copy_wq[hwq].io_req_table); 1076 fc_exch_mgr_free(fnic->lport); 1077 vnic_dev_notify_unset(fnic->vdev); 1078 fnic_free_intr(fnic); 1079 fnic_free_vnic_resources(fnic); 1080 fnic_clear_intr_mode(fnic); 1081 vnic_dev_close(fnic->vdev); 1082 vnic_dev_unregister(fnic->vdev); 1083 fnic_iounmap(fnic); 1084 pci_release_regions(pdev); 1085 pci_disable_device(pdev); 1086 ida_free(&fnic_ida, fnic->fnic_num); 1087 scsi_host_put(lp->host); 1088 } 1089 1090 static struct pci_driver fnic_driver = { 1091 .name = DRV_NAME, 1092 .id_table = fnic_id_table, 1093 .probe = fnic_probe, 1094 .remove = fnic_remove, 1095 }; 1096 1097 static int __init fnic_init_module(void) 1098 { 1099 size_t len; 1100 int err = 0; 1101 1102 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 1103 1104 /* Create debugfs entries for fnic */ 1105 err = fnic_debugfs_init(); 1106 if (err < 0) { 1107 printk(KERN_ERR PFX "Failed to create fnic directory " 1108 "for tracing and stats logging\n"); 1109 fnic_debugfs_terminate(); 1110 } 1111 1112 /* Allocate memory for trace buffer */ 1113 err = fnic_trace_buf_init(); 1114 if (err < 0) { 1115 printk(KERN_ERR PFX 1116 "Trace buffer initialization Failed. " 1117 "Fnic Tracing utility is disabled\n"); 1118 fnic_trace_free(); 1119 } 1120 1121 /* Allocate memory for fc trace buffer */ 1122 err = fnic_fc_trace_init(); 1123 if (err < 0) { 1124 printk(KERN_ERR PFX "FC trace buffer initialization Failed " 1125 "FC frame tracing utility is disabled\n"); 1126 fnic_fc_trace_free(); 1127 } 1128 1129 /* Create a cache for allocation of default size sgls */ 1130 len = sizeof(struct fnic_dflt_sgl_list); 1131 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 1132 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 1133 SLAB_HWCACHE_ALIGN, 1134 NULL); 1135 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 1136 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 1137 err = -ENOMEM; 1138 goto err_create_fnic_sgl_slab_dflt; 1139 } 1140 1141 /* Create a cache for allocation of max size sgls*/ 1142 len = sizeof(struct fnic_sgl_list); 1143 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 1144 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 1145 SLAB_HWCACHE_ALIGN, 1146 NULL); 1147 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 1148 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 1149 err = -ENOMEM; 1150 goto err_create_fnic_sgl_slab_max; 1151 } 1152 1153 /* Create a cache of io_req structs for use via mempool */ 1154 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 1155 sizeof(struct fnic_io_req), 1156 0, SLAB_HWCACHE_ALIGN, NULL); 1157 if (!fnic_io_req_cache) { 1158 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 1159 err = -ENOMEM; 1160 goto err_create_fnic_ioreq_slab; 1161 } 1162 1163 fnic_event_queue = 1164 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_event_wq"); 1165 if (!fnic_event_queue) { 1166 printk(KERN_ERR PFX "fnic work queue create failed\n"); 1167 err = -ENOMEM; 1168 goto err_create_fnic_workq; 1169 } 1170 1171 fnic_fip_queue = 1172 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_fip_q"); 1173 if (!fnic_fip_queue) { 1174 printk(KERN_ERR PFX "fnic FIP work queue create failed\n"); 1175 err = -ENOMEM; 1176 goto err_create_fip_workq; 1177 } 1178 1179 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 1180 if (!fnic_fc_transport) { 1181 printk(KERN_ERR PFX "fc_attach_transport error\n"); 1182 err = -ENOMEM; 1183 goto err_fc_transport; 1184 } 1185 1186 /* register the driver with PCI system */ 1187 err = pci_register_driver(&fnic_driver); 1188 if (err < 0) { 1189 printk(KERN_ERR PFX "pci register error\n"); 1190 goto err_pci_register; 1191 } 1192 return err; 1193 1194 err_pci_register: 1195 fc_release_transport(fnic_fc_transport); 1196 err_fc_transport: 1197 destroy_workqueue(fnic_fip_queue); 1198 err_create_fip_workq: 1199 destroy_workqueue(fnic_event_queue); 1200 err_create_fnic_workq: 1201 kmem_cache_destroy(fnic_io_req_cache); 1202 err_create_fnic_ioreq_slab: 1203 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1204 err_create_fnic_sgl_slab_max: 1205 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1206 err_create_fnic_sgl_slab_dflt: 1207 fnic_trace_free(); 1208 fnic_fc_trace_free(); 1209 fnic_debugfs_terminate(); 1210 return err; 1211 } 1212 1213 static void __exit fnic_cleanup_module(void) 1214 { 1215 pci_unregister_driver(&fnic_driver); 1216 destroy_workqueue(fnic_event_queue); 1217 if (fnic_fip_queue) 1218 destroy_workqueue(fnic_fip_queue); 1219 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1220 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1221 kmem_cache_destroy(fnic_io_req_cache); 1222 fc_release_transport(fnic_fc_transport); 1223 fnic_trace_free(); 1224 fnic_fc_trace_free(); 1225 fnic_debugfs_terminate(); 1226 ida_destroy(&fnic_ida); 1227 } 1228 1229 module_init(fnic_init_module); 1230 module_exit(fnic_cleanup_module); 1231