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