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/fc_frame.h> 25 26 #include "vnic_dev.h" 27 #include "vnic_intr.h" 28 #include "vnic_stats.h" 29 #include "fnic_io.h" 30 #include "fnic.h" 31 #include "fnic_fdls.h" 32 #include "fdls_fc.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 struct kmem_cache *fdls_frame_cache; 42 static struct kmem_cache *fdls_frame_elem_cache; 43 static LIST_HEAD(fnic_list); 44 static DEFINE_SPINLOCK(fnic_list_lock); 45 static DEFINE_IDA(fnic_ida); 46 47 struct work_struct reset_fnic_work; 48 LIST_HEAD(reset_fnic_list); 49 DEFINE_SPINLOCK(reset_fnic_list_lock); 50 51 /* Supported devices by fnic module */ 52 static const struct pci_device_id fnic_id_table[] = { 53 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, 54 { 0, } 55 }; 56 57 MODULE_DESCRIPTION(DRV_DESCRIPTION); 58 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " 59 "Joseph R. Eykholt <jeykholt@cisco.com>"); 60 MODULE_LICENSE("GPL v2"); 61 MODULE_VERSION(DRV_VERSION); 62 MODULE_DEVICE_TABLE(pci, fnic_id_table); 63 64 unsigned int fnic_log_level; 65 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); 66 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); 67 68 unsigned int fnic_fdmi_support = 1; 69 module_param(fnic_fdmi_support, int, 0644); 70 MODULE_PARM_DESC(fnic_fdmi_support, "FDMI support"); 71 72 static unsigned int fnic_tgt_id_binding = 1; 73 module_param(fnic_tgt_id_binding, uint, 0644); 74 MODULE_PARM_DESC(fnic_tgt_id_binding, 75 "Target ID binding (0 for none. 1 for binding by WWPN (default))"); 76 77 unsigned int io_completions = FNIC_DFLT_IO_COMPLETIONS; 78 module_param(io_completions, int, S_IRUGO|S_IWUSR); 79 MODULE_PARM_DESC(io_completions, "Max CQ entries to process at a time"); 80 81 unsigned int fnic_trace_max_pages = 16; 82 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR); 83 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages " 84 "for fnic trace buffer"); 85 86 unsigned int fnic_fc_trace_max_pages = 64; 87 module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR); 88 MODULE_PARM_DESC(fnic_fc_trace_max_pages, 89 "Total allocated memory pages for fc trace buffer"); 90 91 static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH; 92 module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR); 93 MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN"); 94 95 unsigned int pc_rscn_handling_feature_flag = PC_RSCN_HANDLING_FEATURE_ON; 96 module_param(pc_rscn_handling_feature_flag, uint, 0644); 97 MODULE_PARM_DESC(pc_rscn_handling_feature_flag, 98 "PCRSCN handling (0 for none. 1 to handle PCRSCN (default))"); 99 100 struct workqueue_struct *reset_fnic_work_queue; 101 struct workqueue_struct *fnic_fip_queue; 102 103 static int fnic_sdev_init(struct scsi_device *sdev) 104 { 105 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 106 107 if (!rport || fc_remote_port_chkready(rport)) 108 return -ENXIO; 109 110 scsi_change_queue_depth(sdev, fnic_max_qdepth); 111 return 0; 112 } 113 114 static const struct scsi_host_template fnic_host_template = { 115 .module = THIS_MODULE, 116 .name = DRV_NAME, 117 .queuecommand = fnic_queuecommand, 118 .eh_timed_out = fc_eh_timed_out, 119 .eh_abort_handler = fnic_abort_cmd, 120 .eh_device_reset_handler = fnic_device_reset, 121 .eh_host_reset_handler = fnic_eh_host_reset_handler, 122 .sdev_init = fnic_sdev_init, 123 .change_queue_depth = scsi_change_queue_depth, 124 .this_id = -1, 125 .cmd_per_lun = 3, 126 .can_queue = FNIC_DFLT_IO_REQ, 127 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 128 .max_sectors = 0xffff, 129 .shost_groups = fnic_host_groups, 130 .track_queue_depth = 1, 131 .cmd_size = sizeof(struct fnic_cmd_priv), 132 .map_queues = fnic_mq_map_queues_cpus, 133 }; 134 135 static void 136 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 137 { 138 if (timeout) 139 rport->dev_loss_tmo = timeout; 140 else 141 rport->dev_loss_tmo = 1; 142 } 143 144 static void fnic_get_host_speed(struct Scsi_Host *shost); 145 static struct scsi_transport_template *fnic_fc_transport; 146 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 147 static void fnic_reset_host_stats(struct Scsi_Host *); 148 149 static struct fc_function_template fnic_fc_functions = { 150 151 .show_host_node_name = 1, 152 .show_host_port_name = 1, 153 .show_host_supported_classes = 1, 154 .show_host_supported_fc4s = 1, 155 .show_host_active_fc4s = 1, 156 .show_host_maxframe_size = 1, 157 .show_host_port_id = 1, 158 .show_host_supported_speeds = 1, 159 .get_host_speed = fnic_get_host_speed, 160 .show_host_speed = 1, 161 .show_host_port_type = 1, 162 .get_host_port_state = fnic_get_host_port_state, 163 .show_host_port_state = 1, 164 .show_host_symbolic_name = 1, 165 .show_rport_maxframe_size = 1, 166 .show_rport_supported_classes = 1, 167 .show_host_fabric_name = 1, 168 .show_starget_node_name = 1, 169 .show_starget_port_name = 1, 170 .show_starget_port_id = 1, 171 .show_rport_dev_loss_tmo = 1, 172 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo, 173 .issue_fc_host_lip = fnic_issue_fc_host_lip, 174 .get_fc_host_stats = fnic_get_stats, 175 .reset_fc_host_stats = fnic_reset_host_stats, 176 .dd_fcrport_size = sizeof(struct rport_dd_data_s), 177 .terminate_rport_io = fnic_terminate_rport_io, 178 .bsg_request = NULL, 179 }; 180 181 static void fnic_get_host_speed(struct Scsi_Host *shost) 182 { 183 struct fnic *fnic = *((struct fnic **) shost_priv(shost)); 184 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 185 struct fnic_stats *fnic_stats = &fnic->fnic_stats; 186 187 FNIC_MAIN_DBG(KERN_INFO, fnic->host, fnic->fnic_num, 188 "port_speed: %d Mbps", port_speed); 189 atomic64_set(&fnic_stats->misc_stats.port_speed_in_mbps, port_speed); 190 191 /* Add in other values as they get defined in fw */ 192 switch (port_speed) { 193 case DCEM_PORTSPEED_1G: 194 fc_host_speed(shost) = FC_PORTSPEED_1GBIT; 195 break; 196 case DCEM_PORTSPEED_2G: 197 fc_host_speed(shost) = FC_PORTSPEED_2GBIT; 198 break; 199 case DCEM_PORTSPEED_4G: 200 fc_host_speed(shost) = FC_PORTSPEED_4GBIT; 201 break; 202 case DCEM_PORTSPEED_8G: 203 fc_host_speed(shost) = FC_PORTSPEED_8GBIT; 204 break; 205 case DCEM_PORTSPEED_10G: 206 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 207 break; 208 case DCEM_PORTSPEED_16G: 209 fc_host_speed(shost) = FC_PORTSPEED_16GBIT; 210 break; 211 case DCEM_PORTSPEED_20G: 212 fc_host_speed(shost) = FC_PORTSPEED_20GBIT; 213 break; 214 case DCEM_PORTSPEED_25G: 215 fc_host_speed(shost) = FC_PORTSPEED_25GBIT; 216 break; 217 case DCEM_PORTSPEED_32G: 218 fc_host_speed(shost) = FC_PORTSPEED_32GBIT; 219 break; 220 case DCEM_PORTSPEED_40G: 221 case DCEM_PORTSPEED_4x10G: 222 fc_host_speed(shost) = FC_PORTSPEED_40GBIT; 223 break; 224 case DCEM_PORTSPEED_50G: 225 fc_host_speed(shost) = FC_PORTSPEED_50GBIT; 226 break; 227 case DCEM_PORTSPEED_64G: 228 fc_host_speed(shost) = FC_PORTSPEED_64GBIT; 229 break; 230 case DCEM_PORTSPEED_100G: 231 fc_host_speed(shost) = FC_PORTSPEED_100GBIT; 232 break; 233 case DCEM_PORTSPEED_128G: 234 fc_host_speed(shost) = FC_PORTSPEED_128GBIT; 235 break; 236 default: 237 FNIC_MAIN_DBG(KERN_INFO, fnic->host, fnic->fnic_num, 238 "Unknown FC speed: %d Mbps", port_speed); 239 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN; 240 break; 241 } 242 } 243 244 /* Placeholder function */ 245 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 246 { 247 int ret; 248 struct fnic *fnic = *((struct fnic **) shost_priv(host)); 249 struct fc_host_statistics *stats = &fnic->fnic_stats.host_stats; 250 struct vnic_stats *vs; 251 unsigned long flags; 252 253 if (time_before 254 (jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 255 return stats; 256 fnic->stats_time = jiffies; 257 258 spin_lock_irqsave(&fnic->fnic_lock, flags); 259 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 260 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 261 262 if (ret) { 263 FNIC_MAIN_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num, 264 "fnic: Get vnic stats failed: 0x%x", ret); 265 return stats; 266 } 267 vs = fnic->stats; 268 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 269 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 270 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 271 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 272 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 273 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 274 stats->invalid_crc_count = vs->rx.rx_crc_errors; 275 stats->seconds_since_last_reset = 276 (jiffies - fnic->stats_reset_time) / HZ; 277 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 278 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 279 return stats; 280 } 281 282 /* 283 * fnic_dump_fchost_stats 284 * note : dumps fc_statistics into system logs 285 */ 286 void fnic_dump_fchost_stats(struct Scsi_Host *host, 287 struct fc_host_statistics *stats) 288 { 289 FNIC_MAIN_NOTE(KERN_NOTICE, host, 290 "fnic: seconds since last reset = %llu\n", 291 stats->seconds_since_last_reset); 292 FNIC_MAIN_NOTE(KERN_NOTICE, host, 293 "fnic: tx frames = %llu\n", 294 stats->tx_frames); 295 FNIC_MAIN_NOTE(KERN_NOTICE, host, 296 "fnic: tx words = %llu\n", 297 stats->tx_words); 298 FNIC_MAIN_NOTE(KERN_NOTICE, host, 299 "fnic: rx frames = %llu\n", 300 stats->rx_frames); 301 FNIC_MAIN_NOTE(KERN_NOTICE, host, 302 "fnic: rx words = %llu\n", 303 stats->rx_words); 304 FNIC_MAIN_NOTE(KERN_NOTICE, host, 305 "fnic: lip count = %llu\n", 306 stats->lip_count); 307 FNIC_MAIN_NOTE(KERN_NOTICE, host, 308 "fnic: nos count = %llu\n", 309 stats->nos_count); 310 FNIC_MAIN_NOTE(KERN_NOTICE, host, 311 "fnic: error frames = %llu\n", 312 stats->error_frames); 313 FNIC_MAIN_NOTE(KERN_NOTICE, host, 314 "fnic: dumped frames = %llu\n", 315 stats->dumped_frames); 316 FNIC_MAIN_NOTE(KERN_NOTICE, host, 317 "fnic: link failure count = %llu\n", 318 stats->link_failure_count); 319 FNIC_MAIN_NOTE(KERN_NOTICE, host, 320 "fnic: loss of sync count = %llu\n", 321 stats->loss_of_sync_count); 322 FNIC_MAIN_NOTE(KERN_NOTICE, host, 323 "fnic: loss of signal count = %llu\n", 324 stats->loss_of_signal_count); 325 FNIC_MAIN_NOTE(KERN_NOTICE, host, 326 "fnic: prim seq protocol err count = %llu\n", 327 stats->prim_seq_protocol_err_count); 328 FNIC_MAIN_NOTE(KERN_NOTICE, host, 329 "fnic: invalid tx word count= %llu\n", 330 stats->invalid_tx_word_count); 331 FNIC_MAIN_NOTE(KERN_NOTICE, host, 332 "fnic: invalid crc count = %llu\n", 333 stats->invalid_crc_count); 334 FNIC_MAIN_NOTE(KERN_NOTICE, host, 335 "fnic: fcp input requests = %llu\n", 336 stats->fcp_input_requests); 337 FNIC_MAIN_NOTE(KERN_NOTICE, host, 338 "fnic: fcp output requests = %llu\n", 339 stats->fcp_output_requests); 340 FNIC_MAIN_NOTE(KERN_NOTICE, host, 341 "fnic: fcp control requests = %llu\n", 342 stats->fcp_control_requests); 343 FNIC_MAIN_NOTE(KERN_NOTICE, host, 344 "fnic: fcp input megabytes = %llu\n", 345 stats->fcp_input_megabytes); 346 FNIC_MAIN_NOTE(KERN_NOTICE, host, 347 "fnic: fcp output megabytes = %llu\n", 348 stats->fcp_output_megabytes); 349 return; 350 } 351 352 /* 353 * fnic_reset_host_stats : clears host stats 354 * note : called when reset_statistics set under sysfs dir 355 */ 356 static void fnic_reset_host_stats(struct Scsi_Host *host) 357 { 358 int ret; 359 struct fnic *fnic = *((struct fnic **) shost_priv(host)); 360 struct fc_host_statistics *stats; 361 unsigned long flags; 362 363 /* dump current stats, before clearing them */ 364 stats = fnic_get_stats(host); 365 fnic_dump_fchost_stats(host, stats); 366 367 spin_lock_irqsave(&fnic->fnic_lock, flags); 368 ret = vnic_dev_stats_clear(fnic->vdev); 369 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 370 371 if (ret) { 372 FNIC_MAIN_DBG(KERN_DEBUG, fnic->host, fnic->fnic_num, 373 "fnic: Reset vnic stats failed" 374 " 0x%x", ret); 375 return; 376 } 377 fnic->stats_reset_time = jiffies; 378 memset(stats, 0, sizeof(*stats)); 379 380 return; 381 } 382 383 void fnic_log_q_error(struct fnic *fnic) 384 { 385 unsigned int i; 386 u32 error_status; 387 388 for (i = 0; i < fnic->raw_wq_count; i++) { 389 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 390 if (error_status) 391 dev_err(&fnic->pdev->dev, "WQ[%d] error_status %d\n", i, error_status); 392 } 393 394 for (i = 0; i < fnic->rq_count; i++) { 395 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 396 if (error_status) 397 dev_err(&fnic->pdev->dev, "RQ[%d] error_status %d\n", i, error_status); 398 } 399 400 for (i = 0; i < fnic->wq_copy_count; i++) { 401 error_status = ioread32(&fnic->hw_copy_wq[i].ctrl->error_status); 402 if (error_status) 403 dev_err(&fnic->pdev->dev, "CWQ[%d] error_status %d\n", i, error_status); 404 } 405 } 406 407 void fnic_handle_link_event(struct fnic *fnic) 408 { 409 unsigned long flags; 410 411 spin_lock_irqsave(&fnic->fnic_lock, flags); 412 if (fnic->stop_rx_link_events) { 413 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 414 return; 415 } 416 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 417 418 queue_work(fnic_event_queue, &fnic->link_work); 419 420 } 421 422 static int fnic_notify_set(struct fnic *fnic) 423 { 424 int err; 425 426 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 427 case VNIC_DEV_INTR_MODE_INTX: 428 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 429 break; 430 case VNIC_DEV_INTR_MODE_MSI: 431 err = vnic_dev_notify_set(fnic->vdev, -1); 432 break; 433 case VNIC_DEV_INTR_MODE_MSIX: 434 err = vnic_dev_notify_set(fnic->vdev, fnic->wq_copy_count + fnic->copy_wq_base); 435 break; 436 default: 437 dev_err(&fnic->pdev->dev, "Interrupt mode should be set up" 438 " before devcmd notify set %d\n", 439 vnic_dev_get_intr_mode(fnic->vdev)); 440 err = -1; 441 break; 442 } 443 444 return err; 445 } 446 447 static void fnic_notify_timer(struct timer_list *t) 448 { 449 struct fnic *fnic = from_timer(fnic, t, notify_timer); 450 451 fnic_handle_link_event(fnic); 452 mod_timer(&fnic->notify_timer, 453 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 454 } 455 456 static void fnic_notify_timer_start(struct fnic *fnic) 457 { 458 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 459 case VNIC_DEV_INTR_MODE_MSI: 460 /* 461 * Schedule first timeout immediately. The driver is 462 * initiatialized and ready to look for link up notification 463 */ 464 mod_timer(&fnic->notify_timer, jiffies); 465 break; 466 default: 467 /* Using intr for notification for INTx/MSI-X */ 468 break; 469 } 470 } 471 472 static int fnic_dev_wait(struct vnic_dev *vdev, 473 int (*start)(struct vnic_dev *, int), 474 int (*finished)(struct vnic_dev *, int *), 475 int arg) 476 { 477 unsigned long time; 478 int done; 479 int err; 480 int count; 481 482 count = 0; 483 484 err = start(vdev, arg); 485 if (err) 486 return err; 487 488 /* Wait for func to complete. 489 * Sometime schedule_timeout_uninterruptible take long time 490 * to wake up so we do not retry as we are only waiting for 491 * 2 seconds in while loop. By adding count, we make sure 492 * we try atleast three times before returning -ETIMEDOUT 493 */ 494 time = jiffies + (HZ * 2); 495 do { 496 err = finished(vdev, &done); 497 count++; 498 if (err) 499 return err; 500 if (done) 501 return 0; 502 schedule_timeout_uninterruptible(HZ / 10); 503 } while (time_after(time, jiffies) || (count < 3)); 504 505 return -ETIMEDOUT; 506 } 507 508 static int fnic_cleanup(struct fnic *fnic) 509 { 510 unsigned int i; 511 int err; 512 int raw_wq_rq_counts; 513 514 vnic_dev_disable(fnic->vdev); 515 for (i = 0; i < fnic->intr_count; i++) 516 vnic_intr_mask(&fnic->intr[i]); 517 518 for (i = 0; i < fnic->rq_count; i++) { 519 err = vnic_rq_disable(&fnic->rq[i]); 520 if (err) 521 return err; 522 } 523 for (i = 0; i < fnic->raw_wq_count; i++) { 524 err = vnic_wq_disable(&fnic->wq[i]); 525 if (err) 526 return err; 527 } 528 for (i = 0; i < fnic->wq_copy_count; i++) { 529 err = vnic_wq_copy_disable(&fnic->hw_copy_wq[i]); 530 if (err) 531 return err; 532 raw_wq_rq_counts = fnic->raw_wq_count + fnic->rq_count; 533 fnic_wq_copy_cmpl_handler(fnic, -1, i + raw_wq_rq_counts); 534 } 535 536 /* Clean up completed IOs and FCS frames */ 537 fnic_wq_cmpl_handler(fnic, -1); 538 fnic_rq_cmpl_handler(fnic, -1); 539 540 /* Clean up the IOs and FCS frames that have not completed */ 541 for (i = 0; i < fnic->raw_wq_count; i++) 542 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 543 for (i = 0; i < fnic->rq_count; i++) 544 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 545 for (i = 0; i < fnic->wq_copy_count; i++) 546 vnic_wq_copy_clean(&fnic->hw_copy_wq[i], 547 fnic_wq_copy_cleanup_handler); 548 549 for (i = 0; i < fnic->cq_count; i++) 550 vnic_cq_clean(&fnic->cq[i]); 551 for (i = 0; i < fnic->intr_count; i++) 552 vnic_intr_clean(&fnic->intr[i]); 553 554 mempool_destroy(fnic->io_req_pool); 555 mempool_destroy(fnic->frame_pool); 556 mempool_destroy(fnic->frame_elem_pool); 557 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 558 mempool_destroy(fnic->io_sgl_pool[i]); 559 560 return 0; 561 } 562 563 static void fnic_iounmap(struct fnic *fnic) 564 { 565 if (fnic->bar0.vaddr) 566 iounmap(fnic->bar0.vaddr); 567 } 568 569 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id) 570 { 571 vnic_dev_set_default_vlan(fnic->vdev, vlan_id); 572 } 573 574 static void fnic_scsi_init(struct fnic *fnic) 575 { 576 struct Scsi_Host *host = fnic->host; 577 578 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 579 host->host_no); 580 581 host->transportt = fnic_fc_transport; 582 } 583 584 static void fnic_free_ioreq_tables_mq(struct fnic *fnic) 585 { 586 int hwq; 587 588 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) 589 kfree(fnic->sw_copy_wq[hwq].io_req_table); 590 } 591 592 static int fnic_scsi_drv_init(struct fnic *fnic) 593 { 594 struct Scsi_Host *host = fnic->host; 595 int err; 596 struct pci_dev *pdev = fnic->pdev; 597 struct fnic_iport_s *iport = &fnic->iport; 598 int hwq; 599 600 /* Configure maximum outstanding IO reqs*/ 601 if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) 602 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ, 603 max_t(u32, FNIC_MIN_IO_REQ, 604 fnic->config.io_throttle_count)); 605 606 fnic->fnic_max_tag_id = host->can_queue; 607 host->max_lun = fnic->config.luns_per_tgt; 608 host->max_id = FNIC_MAX_FCP_TARGET; 609 host->max_cmd_len = FNIC_FCOE_MAX_CMD_LEN; 610 611 host->nr_hw_queues = fnic->wq_copy_count; 612 613 dev_info(&fnic->pdev->dev, "fnic: can_queue: %d max_lun: %llu", 614 host->can_queue, host->max_lun); 615 616 dev_info(&fnic->pdev->dev, "fnic: max_id: %d max_cmd_len: %d nr_hw_queues: %d", 617 host->max_id, host->max_cmd_len, host->nr_hw_queues); 618 619 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) { 620 fnic->sw_copy_wq[hwq].ioreq_table_size = fnic->fnic_max_tag_id; 621 fnic->sw_copy_wq[hwq].io_req_table = 622 kzalloc((fnic->sw_copy_wq[hwq].ioreq_table_size + 1) * 623 sizeof(struct fnic_io_req *), GFP_KERNEL); 624 625 if (!fnic->sw_copy_wq[hwq].io_req_table) { 626 fnic_free_ioreq_tables_mq(fnic); 627 return -ENOMEM; 628 } 629 } 630 631 dev_info(&fnic->pdev->dev, "fnic copy wqs: %d, Q0 ioreq table size: %d\n", 632 fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size); 633 634 fnic_scsi_init(fnic); 635 636 err = scsi_add_host(fnic->host, &pdev->dev); 637 if (err) { 638 dev_err(&fnic->pdev->dev, "fnic: scsi add host failed: aborting\n"); 639 return err; 640 } 641 fc_host_maxframe_size(fnic->host) = iport->max_payload_size; 642 fc_host_dev_loss_tmo(fnic->host) = 643 fnic->config.port_down_timeout / 1000; 644 sprintf(fc_host_symbolic_name(fnic->host), 645 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 646 fc_host_port_type(fnic->host) = FC_PORTTYPE_NPORT; 647 fc_host_node_name(fnic->host) = iport->wwnn; 648 fc_host_port_name(fnic->host) = iport->wwpn; 649 fc_host_supported_classes(fnic->host) = FC_COS_CLASS3; 650 memset(fc_host_supported_fc4s(fnic->host), 0, 651 sizeof(fc_host_supported_fc4s(fnic->host))); 652 fc_host_supported_fc4s(fnic->host)[2] = 1; 653 fc_host_supported_fc4s(fnic->host)[7] = 1; 654 fc_host_supported_speeds(fnic->host) = 0; 655 fc_host_supported_speeds(fnic->host) |= FC_PORTSPEED_8GBIT; 656 657 dev_info(&fnic->pdev->dev, "shost_data: 0x%p\n", fnic->host->shost_data); 658 if (fnic->host->shost_data != NULL) { 659 if (fnic_tgt_id_binding == 0) { 660 dev_info(&fnic->pdev->dev, "Setting target binding to NONE\n"); 661 fc_host_tgtid_bind_type(fnic->host) = FC_TGTID_BIND_NONE; 662 } else { 663 dev_info(&fnic->pdev->dev, "Setting target binding to WWPN\n"); 664 fc_host_tgtid_bind_type(fnic->host) = FC_TGTID_BIND_BY_WWPN; 665 } 666 } 667 668 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 669 if (!fnic->io_req_pool) { 670 scsi_remove_host(fnic->host); 671 return -ENOMEM; 672 } 673 674 return 0; 675 } 676 677 void fnic_mq_map_queues_cpus(struct Scsi_Host *host) 678 { 679 struct fnic *fnic = *((struct fnic **) shost_priv(host)); 680 struct pci_dev *l_pdev = fnic->pdev; 681 int intr_mode = fnic->config.intr_mode; 682 struct blk_mq_queue_map *qmap = &host->tag_set.map[HCTX_TYPE_DEFAULT]; 683 684 if (intr_mode == VNIC_DEV_INTR_MODE_MSI || intr_mode == VNIC_DEV_INTR_MODE_INTX) { 685 FNIC_MAIN_DBG(KERN_ERR, fnic->host, fnic->fnic_num, 686 "intr_mode is not msix\n"); 687 return; 688 } 689 690 FNIC_MAIN_DBG(KERN_INFO, fnic->host, fnic->fnic_num, 691 "qmap->nr_queues: %d\n", qmap->nr_queues); 692 693 if (l_pdev == NULL) { 694 FNIC_MAIN_DBG(KERN_ERR, fnic->host, fnic->fnic_num, 695 "l_pdev is null\n"); 696 return; 697 } 698 699 blk_mq_map_hw_queues(qmap, &l_pdev->dev, FNIC_PCI_OFFSET); 700 } 701 702 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 703 { 704 struct Scsi_Host *host = NULL; 705 struct fnic *fnic; 706 mempool_t *pool; 707 struct fnic_iport_s *iport; 708 int err = 0; 709 int fnic_id = 0; 710 int i; 711 unsigned long flags; 712 char *desc, *subsys_desc; 713 int len; 714 715 /* 716 * Allocate fnic 717 */ 718 fnic = kzalloc(sizeof(struct fnic), GFP_KERNEL); 719 if (!fnic) { 720 err = -ENOMEM; 721 goto err_out_fnic_alloc; 722 } 723 724 iport = &fnic->iport; 725 726 fnic_id = ida_alloc(&fnic_ida, GFP_KERNEL); 727 if (fnic_id < 0) { 728 dev_err(&pdev->dev, "Unable to alloc fnic ID\n"); 729 err = fnic_id; 730 goto err_out_ida_alloc; 731 } 732 733 fnic->pdev = pdev; 734 fnic->fnic_num = fnic_id; 735 736 /* Find model name from PCIe subsys ID */ 737 if (fnic_get_desc_by_devid(pdev, &desc, &subsys_desc) == 0) { 738 dev_info(&fnic->pdev->dev, "Model: %s\n", subsys_desc); 739 740 /* Update FDMI model */ 741 fnic->subsys_desc_len = strlen(subsys_desc); 742 len = ARRAY_SIZE(fnic->subsys_desc); 743 if (fnic->subsys_desc_len > len) 744 fnic->subsys_desc_len = len; 745 memcpy(fnic->subsys_desc, subsys_desc, fnic->subsys_desc_len); 746 dev_info(&fnic->pdev->dev, "FDMI Model: %s\n", fnic->subsys_desc); 747 } else { 748 fnic->subsys_desc_len = 0; 749 dev_info(&fnic->pdev->dev, "Model: %s subsys_id: 0x%04x\n", "Unknown", 750 pdev->subsystem_device); 751 } 752 753 err = pci_enable_device(pdev); 754 if (err) { 755 dev_err(&fnic->pdev->dev, "Cannot enable PCI device, aborting.\n"); 756 goto err_out_pci_enable_device; 757 } 758 759 err = pci_request_regions(pdev, DRV_NAME); 760 if (err) { 761 dev_err(&fnic->pdev->dev, "Cannot enable PCI resources, aborting\n"); 762 goto err_out_pci_request_regions; 763 } 764 765 pci_set_master(pdev); 766 767 /* Query PCI controller on system for DMA addressing 768 * limitation for the device. Try 47-bit first, and 769 * fail to 32-bit. Cisco VIC supports 47 bits only. 770 */ 771 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(47)); 772 if (err) { 773 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 774 if (err) { 775 dev_err(&fnic->pdev->dev, "No usable DMA configuration " 776 "aborting\n"); 777 goto err_out_set_dma_mask; 778 } 779 } 780 781 /* Map vNIC resources from BAR0 */ 782 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 783 dev_err(&fnic->pdev->dev, "BAR0 not memory-map'able, aborting.\n"); 784 err = -ENODEV; 785 goto err_out_map_bar; 786 } 787 788 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 789 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 790 fnic->bar0.len = pci_resource_len(pdev, 0); 791 792 if (!fnic->bar0.vaddr) { 793 dev_err(&fnic->pdev->dev, "Cannot memory-map BAR0 res hdr, " 794 "aborting.\n"); 795 err = -ENODEV; 796 goto err_out_fnic_map_bar; 797 } 798 799 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 800 if (!fnic->vdev) { 801 dev_err(&fnic->pdev->dev, "vNIC registration failed, " 802 "aborting.\n"); 803 err = -ENODEV; 804 goto err_out_dev_register; 805 } 806 807 err = vnic_dev_cmd_init(fnic->vdev); 808 if (err) { 809 dev_err(&fnic->pdev->dev, "vnic_dev_cmd_init() returns %d, aborting\n", 810 err); 811 goto err_out_dev_cmd_init; 812 } 813 814 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 815 vnic_dev_open_done, CMD_OPENF_RQ_ENABLE_THEN_POST); 816 if (err) { 817 dev_err(&fnic->pdev->dev, "vNIC dev open failed, aborting.\n"); 818 goto err_out_dev_open; 819 } 820 821 err = vnic_dev_init(fnic->vdev, 0); 822 if (err) { 823 dev_err(&fnic->pdev->dev, "vNIC dev init failed, aborting.\n"); 824 goto err_out_dev_init; 825 } 826 827 err = vnic_dev_mac_addr(fnic->vdev, iport->hwmac); 828 if (err) { 829 dev_err(&fnic->pdev->dev, "vNIC get MAC addr failed\n"); 830 goto err_out_dev_mac_addr; 831 } 832 /* set data_src for point-to-point mode and to keep it non-zero */ 833 memcpy(fnic->data_src_addr, iport->hwmac, ETH_ALEN); 834 835 /* Get vNIC configuration */ 836 err = fnic_get_vnic_config(fnic); 837 if (err) { 838 dev_err(&fnic->pdev->dev, "Get vNIC configuration failed, " 839 "aborting.\n"); 840 goto err_out_fnic_get_config; 841 } 842 843 switch (fnic->config.flags & 0xff0) { 844 case VFCF_FC_INITIATOR: 845 { 846 host = 847 scsi_host_alloc(&fnic_host_template, 848 sizeof(struct fnic *)); 849 if (!host) { 850 dev_err(&fnic->pdev->dev, "Unable to allocate scsi host\n"); 851 err = -ENOMEM; 852 goto err_out_scsi_host_alloc; 853 } 854 *((struct fnic **) shost_priv(host)) = fnic; 855 856 fnic->host = host; 857 fnic->role = FNIC_ROLE_FCP_INITIATOR; 858 dev_info(&fnic->pdev->dev, "fnic: %d is scsi initiator\n", 859 fnic->fnic_num); 860 } 861 break; 862 default: 863 dev_info(&fnic->pdev->dev, "fnic: %d has no role defined\n", fnic->fnic_num); 864 err = -EINVAL; 865 goto err_out_fnic_role; 866 } 867 868 /* Setup PCI resources */ 869 pci_set_drvdata(pdev, fnic); 870 871 fnic_get_res_counts(fnic); 872 873 err = fnic_set_intr_mode(fnic); 874 if (err) { 875 dev_err(&fnic->pdev->dev, "Failed to set intr mode, " 876 "aborting.\n"); 877 goto err_out_fnic_set_intr_mode; 878 } 879 880 err = fnic_alloc_vnic_resources(fnic); 881 if (err) { 882 dev_err(&fnic->pdev->dev, "Failed to alloc vNIC resources, " 883 "aborting.\n"); 884 goto err_out_fnic_alloc_vnic_res; 885 } 886 dev_info(&fnic->pdev->dev, "fnic copy wqs: %d, Q0 ioreq table size: %d\n", 887 fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size); 888 889 /* initialize all fnic locks */ 890 spin_lock_init(&fnic->fnic_lock); 891 892 for (i = 0; i < FNIC_WQ_MAX; i++) 893 spin_lock_init(&fnic->wq_lock[i]); 894 895 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 896 spin_lock_init(&fnic->wq_copy_lock[i]); 897 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 898 fnic->fw_ack_recd[i] = 0; 899 fnic->fw_ack_index[i] = -1; 900 } 901 902 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 903 if (!pool) { 904 err = -ENOMEM; 905 goto err_out_free_resources; 906 } 907 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 908 909 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 910 if (!pool) { 911 err = -ENOMEM; 912 goto err_out_free_dflt_pool; 913 } 914 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 915 916 pool = mempool_create_slab_pool(FDLS_MIN_FRAMES, fdls_frame_cache); 917 if (!pool) { 918 err = -ENOMEM; 919 goto err_out_fdls_frame_pool; 920 } 921 fnic->frame_pool = pool; 922 923 pool = mempool_create_slab_pool(FDLS_MIN_FRAME_ELEM, 924 fdls_frame_elem_cache); 925 if (!pool) { 926 err = -ENOMEM; 927 goto err_out_fdls_frame_elem_pool; 928 } 929 fnic->frame_elem_pool = pool; 930 931 /* setup vlan config, hw inserts vlan header */ 932 fnic->vlan_hw_insert = 1; 933 fnic->vlan_id = 0; 934 935 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 936 dev_info(&fnic->pdev->dev, "firmware supports FIP\n"); 937 /* enable directed and multicast */ 938 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); 939 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 940 vnic_dev_add_addr(fnic->vdev, iport->hwmac); 941 spin_lock_init(&fnic->vlans_lock); 942 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame); 943 INIT_LIST_HEAD(&fnic->fip_frame_queue); 944 INIT_LIST_HEAD(&fnic->vlan_list); 945 timer_setup(&fnic->retry_fip_timer, fnic_handle_fip_timer, 0); 946 timer_setup(&fnic->fcs_ka_timer, fnic_handle_fcs_ka_timer, 0); 947 timer_setup(&fnic->enode_ka_timer, fnic_handle_enode_ka_timer, 0); 948 timer_setup(&fnic->vn_ka_timer, fnic_handle_vn_ka_timer, 0); 949 fnic->set_vlan = fnic_set_vlan; 950 } else { 951 dev_info(&fnic->pdev->dev, "firmware uses non-FIP mode\n"); 952 } 953 fnic->state = FNIC_IN_FC_MODE; 954 955 atomic_set(&fnic->in_flight, 0); 956 fnic->state_flags = FNIC_FLAGS_NONE; 957 958 /* Enable hardware stripping of vlan header on ingress */ 959 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 960 961 /* Setup notification buffer area */ 962 err = fnic_notify_set(fnic); 963 if (err) { 964 dev_err(&fnic->pdev->dev, "Failed to alloc notify buffer, aborting.\n"); 965 goto err_out_fnic_notify_set; 966 } 967 968 /* Setup notify timer when using MSI interrupts */ 969 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 970 timer_setup(&fnic->notify_timer, fnic_notify_timer, 0); 971 972 /* allocate RQ buffers and post them to RQ*/ 973 for (i = 0; i < fnic->rq_count; i++) { 974 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 975 if (err) { 976 dev_err(&fnic->pdev->dev, "fnic_alloc_rq_frame can't alloc " 977 "frame\n"); 978 goto err_out_alloc_rq_buf; 979 } 980 } 981 982 init_completion(&fnic->reset_completion_wait); 983 984 /* Start local port initialization */ 985 iport->max_flogi_retries = fnic->config.flogi_retries; 986 iport->max_plogi_retries = fnic->config.plogi_retries; 987 iport->plogi_timeout = fnic->config.plogi_timeout; 988 iport->service_params = 989 (FNIC_FCP_SP_INITIATOR | FNIC_FCP_SP_RD_XRDY_DIS | 990 FNIC_FCP_SP_CONF_CMPL); 991 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 992 iport->service_params |= FNIC_FCP_SP_RETRY; 993 994 iport->boot_time = jiffies; 995 iport->e_d_tov = fnic->config.ed_tov; 996 iport->r_a_tov = fnic->config.ra_tov; 997 iport->link_supported_speeds = FNIC_PORTSPEED_10GBIT; 998 iport->wwpn = fnic->config.port_wwn; 999 iport->wwnn = fnic->config.node_wwn; 1000 1001 iport->max_payload_size = fnic->config.maxdatafieldsize; 1002 1003 if ((iport->max_payload_size < FNIC_MIN_DATA_FIELD_SIZE) || 1004 (iport->max_payload_size > FNIC_FC_MAX_PAYLOAD_LEN) || 1005 ((iport->max_payload_size % 4) != 0)) { 1006 iport->max_payload_size = FNIC_FC_MAX_PAYLOAD_LEN; 1007 } 1008 1009 iport->flags |= FNIC_FIRST_LINK_UP; 1010 1011 timer_setup(&(iport->fabric.retry_timer), fdls_fabric_timer_callback, 1012 0); 1013 1014 fnic->stats_reset_time = jiffies; 1015 1016 INIT_WORK(&fnic->link_work, fnic_handle_link); 1017 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 1018 INIT_WORK(&fnic->tport_work, fnic_tport_event_handler); 1019 INIT_WORK(&fnic->flush_work, fnic_flush_tx); 1020 1021 INIT_LIST_HEAD(&fnic->frame_queue); 1022 INIT_LIST_HEAD(&fnic->tx_queue); 1023 INIT_LIST_HEAD(&fnic->tport_event_list); 1024 1025 INIT_DELAYED_WORK(&iport->oxid_pool.schedule_oxid_free_retry, 1026 fdls_schedule_oxid_free_retry_work); 1027 1028 /* Initialize the oxid reclaim list and work struct */ 1029 INIT_LIST_HEAD(&iport->oxid_pool.oxid_reclaim_list); 1030 INIT_DELAYED_WORK(&iport->oxid_pool.oxid_reclaim_work, fdls_reclaim_oxid_handler); 1031 1032 /* Enable all queues */ 1033 for (i = 0; i < fnic->raw_wq_count; i++) 1034 vnic_wq_enable(&fnic->wq[i]); 1035 for (i = 0; i < fnic->rq_count; i++) { 1036 if (!ioread32(&fnic->rq[i].ctrl->enable)) 1037 vnic_rq_enable(&fnic->rq[i]); 1038 } 1039 for (i = 0; i < fnic->wq_copy_count; i++) 1040 vnic_wq_copy_enable(&fnic->hw_copy_wq[i]); 1041 1042 vnic_dev_enable(fnic->vdev); 1043 1044 err = fnic_request_intr(fnic); 1045 if (err) { 1046 dev_err(&fnic->pdev->dev, "Unable to request irq.\n"); 1047 goto err_out_fnic_request_intr; 1048 } 1049 1050 fnic_notify_timer_start(fnic); 1051 1052 fnic_fdls_init(fnic, (fnic->config.flags & VFCF_FIP_CAPABLE)); 1053 1054 err = fnic_scsi_drv_init(fnic); 1055 if (err) 1056 goto err_out_scsi_drv_init; 1057 1058 err = fnic_stats_debugfs_init(fnic); 1059 if (err) { 1060 dev_err(&fnic->pdev->dev, "Failed to initialize debugfs for stats\n"); 1061 goto err_out_free_stats_debugfs; 1062 } 1063 1064 for (i = 0; i < fnic->intr_count; i++) 1065 vnic_intr_unmask(&fnic->intr[i]); 1066 1067 spin_lock_irqsave(&fnic_list_lock, flags); 1068 list_add_tail(&fnic->list, &fnic_list); 1069 spin_unlock_irqrestore(&fnic_list_lock, flags); 1070 1071 return 0; 1072 1073 err_out_free_stats_debugfs: 1074 fnic_stats_debugfs_remove(fnic); 1075 fnic_free_ioreq_tables_mq(fnic); 1076 scsi_remove_host(fnic->host); 1077 err_out_scsi_drv_init: 1078 fnic_free_intr(fnic); 1079 err_out_fnic_request_intr: 1080 err_out_alloc_rq_buf: 1081 for (i = 0; i < fnic->rq_count; i++) { 1082 if (ioread32(&fnic->rq[i].ctrl->enable)) 1083 vnic_rq_disable(&fnic->rq[i]); 1084 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 1085 } 1086 vnic_dev_notify_unset(fnic->vdev); 1087 err_out_fnic_notify_set: 1088 mempool_destroy(fnic->frame_elem_pool); 1089 err_out_fdls_frame_elem_pool: 1090 mempool_destroy(fnic->frame_pool); 1091 err_out_fdls_frame_pool: 1092 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 1093 err_out_free_dflt_pool: 1094 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 1095 err_out_free_resources: 1096 fnic_free_vnic_resources(fnic); 1097 err_out_fnic_alloc_vnic_res: 1098 fnic_clear_intr_mode(fnic); 1099 err_out_fnic_set_intr_mode: 1100 scsi_host_put(fnic->host); 1101 err_out_fnic_role: 1102 err_out_scsi_host_alloc: 1103 err_out_fnic_get_config: 1104 err_out_dev_mac_addr: 1105 err_out_dev_init: 1106 vnic_dev_close(fnic->vdev); 1107 err_out_dev_open: 1108 err_out_dev_cmd_init: 1109 vnic_dev_unregister(fnic->vdev); 1110 err_out_dev_register: 1111 fnic_iounmap(fnic); 1112 err_out_fnic_map_bar: 1113 err_out_map_bar: 1114 err_out_set_dma_mask: 1115 pci_release_regions(pdev); 1116 err_out_pci_request_regions: 1117 pci_disable_device(pdev); 1118 err_out_pci_enable_device: 1119 ida_free(&fnic_ida, fnic->fnic_num); 1120 err_out_ida_alloc: 1121 kfree(fnic); 1122 err_out_fnic_alloc: 1123 return err; 1124 } 1125 1126 static void fnic_remove(struct pci_dev *pdev) 1127 { 1128 struct fnic *fnic = pci_get_drvdata(pdev); 1129 unsigned long flags; 1130 1131 /* 1132 * Sometimes when probe() fails and do not exit with an error code, 1133 * remove() gets called with 'drvdata' not set. Avoid a crash by 1134 * adding a defensive check. 1135 */ 1136 if (!fnic) 1137 return; 1138 1139 spin_lock_irqsave(&fnic->fnic_lock, flags); 1140 fnic->stop_rx_link_events = 1; 1141 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 1142 1143 /* 1144 * Flush the fnic event queue. After this call, there should 1145 * be no event queued for this fnic device in the workqueue 1146 */ 1147 flush_workqueue(fnic_event_queue); 1148 1149 fnic_scsi_unload(fnic); 1150 1151 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 1152 timer_delete_sync(&fnic->notify_timer); 1153 1154 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 1155 timer_delete_sync(&fnic->retry_fip_timer); 1156 timer_delete_sync(&fnic->fcs_ka_timer); 1157 timer_delete_sync(&fnic->enode_ka_timer); 1158 timer_delete_sync(&fnic->vn_ka_timer); 1159 1160 fnic_free_txq(&fnic->fip_frame_queue); 1161 fnic_fcoe_reset_vlans(fnic); 1162 } 1163 1164 if ((fnic_fdmi_support == 1) && (fnic->iport.fabric.fdmi_pending > 0)) 1165 timer_delete_sync(&fnic->iport.fabric.fdmi_timer); 1166 1167 fnic_stats_debugfs_remove(fnic); 1168 1169 /* 1170 * This stops the fnic device, masks all interrupts. Completed 1171 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 1172 * cleaned up 1173 */ 1174 fnic_cleanup(fnic); 1175 1176 spin_lock_irqsave(&fnic_list_lock, flags); 1177 list_del(&fnic->list); 1178 spin_unlock_irqrestore(&fnic_list_lock, flags); 1179 1180 fnic_free_txq(&fnic->frame_queue); 1181 fnic_free_txq(&fnic->tx_queue); 1182 1183 vnic_dev_notify_unset(fnic->vdev); 1184 fnic_free_intr(fnic); 1185 fnic_free_vnic_resources(fnic); 1186 fnic_clear_intr_mode(fnic); 1187 vnic_dev_close(fnic->vdev); 1188 vnic_dev_unregister(fnic->vdev); 1189 fnic_iounmap(fnic); 1190 pci_release_regions(pdev); 1191 pci_disable_device(pdev); 1192 pci_set_drvdata(pdev, NULL); 1193 ida_free(&fnic_ida, fnic->fnic_num); 1194 fnic_scsi_unload_cleanup(fnic); 1195 scsi_host_put(fnic->host); 1196 kfree(fnic); 1197 } 1198 1199 static struct pci_driver fnic_driver = { 1200 .name = DRV_NAME, 1201 .id_table = fnic_id_table, 1202 .probe = fnic_probe, 1203 .remove = fnic_remove, 1204 }; 1205 1206 static int __init fnic_init_module(void) 1207 { 1208 size_t len; 1209 int err = 0; 1210 1211 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 1212 1213 /* Create debugfs entries for fnic */ 1214 err = fnic_debugfs_init(); 1215 if (err < 0) { 1216 printk(KERN_ERR PFX "Failed to create fnic directory " 1217 "for tracing and stats logging\n"); 1218 fnic_debugfs_terminate(); 1219 } 1220 1221 /* Allocate memory for trace buffer */ 1222 err = fnic_trace_buf_init(); 1223 if (err < 0) { 1224 printk(KERN_ERR PFX 1225 "Trace buffer initialization Failed. " 1226 "Fnic Tracing utility is disabled\n"); 1227 fnic_trace_free(); 1228 } 1229 1230 /* Allocate memory for fc trace buffer */ 1231 err = fnic_fc_trace_init(); 1232 if (err < 0) { 1233 printk(KERN_ERR PFX "FC trace buffer initialization Failed " 1234 "FC frame tracing utility is disabled\n"); 1235 fnic_fc_trace_free(); 1236 } 1237 1238 /* Create a cache for allocation of default size sgls */ 1239 len = sizeof(struct fnic_dflt_sgl_list); 1240 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 1241 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 1242 SLAB_HWCACHE_ALIGN, 1243 NULL); 1244 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 1245 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 1246 err = -ENOMEM; 1247 goto err_create_fnic_sgl_slab_dflt; 1248 } 1249 1250 /* Create a cache for allocation of max size sgls*/ 1251 len = sizeof(struct fnic_sgl_list); 1252 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 1253 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 1254 SLAB_HWCACHE_ALIGN, 1255 NULL); 1256 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 1257 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 1258 err = -ENOMEM; 1259 goto err_create_fnic_sgl_slab_max; 1260 } 1261 1262 /* Create a cache of io_req structs for use via mempool */ 1263 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 1264 sizeof(struct fnic_io_req), 1265 0, SLAB_HWCACHE_ALIGN, NULL); 1266 if (!fnic_io_req_cache) { 1267 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 1268 err = -ENOMEM; 1269 goto err_create_fnic_ioreq_slab; 1270 } 1271 1272 fdls_frame_cache = kmem_cache_create("fdls_frames", 1273 FNIC_FCOE_FRAME_MAXSZ, 1274 0, SLAB_HWCACHE_ALIGN, NULL); 1275 if (!fdls_frame_cache) { 1276 pr_err("fnic fdls frame cache create failed\n"); 1277 err = -ENOMEM; 1278 goto err_create_fdls_frame_cache; 1279 } 1280 1281 fdls_frame_elem_cache = kmem_cache_create("fdls_frame_elem", 1282 sizeof(struct fnic_frame_list), 1283 0, SLAB_HWCACHE_ALIGN, NULL); 1284 if (!fdls_frame_elem_cache) { 1285 pr_err("fnic fdls frame elem cache create failed\n"); 1286 err = -ENOMEM; 1287 goto err_create_fdls_frame_cache_elem; 1288 } 1289 1290 fnic_event_queue = 1291 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_event_wq"); 1292 if (!fnic_event_queue) { 1293 printk(KERN_ERR PFX "fnic work queue create failed\n"); 1294 err = -ENOMEM; 1295 goto err_create_fnic_workq; 1296 } 1297 1298 fnic_fip_queue = 1299 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_fip_q"); 1300 if (!fnic_fip_queue) { 1301 printk(KERN_ERR PFX "fnic FIP work queue create failed\n"); 1302 err = -ENOMEM; 1303 goto err_create_fip_workq; 1304 } 1305 1306 if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON) { 1307 reset_fnic_work_queue = 1308 create_singlethread_workqueue("reset_fnic_work_queue"); 1309 if (!reset_fnic_work_queue) { 1310 pr_err("reset fnic work queue create failed\n"); 1311 err = -ENOMEM; 1312 goto err_create_reset_fnic_workq; 1313 } 1314 spin_lock_init(&reset_fnic_list_lock); 1315 INIT_LIST_HEAD(&reset_fnic_list); 1316 INIT_WORK(&reset_fnic_work, fnic_reset_work_handler); 1317 } 1318 1319 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 1320 if (!fnic_fc_transport) { 1321 printk(KERN_ERR PFX "fc_attach_transport error\n"); 1322 err = -ENOMEM; 1323 goto err_fc_transport; 1324 } 1325 1326 /* register the driver with PCI system */ 1327 err = pci_register_driver(&fnic_driver); 1328 if (err < 0) { 1329 printk(KERN_ERR PFX "pci register error\n"); 1330 goto err_pci_register; 1331 } 1332 return err; 1333 1334 err_pci_register: 1335 fc_release_transport(fnic_fc_transport); 1336 err_fc_transport: 1337 destroy_workqueue(fnic_fip_queue); 1338 err_create_fip_workq: 1339 if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON) 1340 destroy_workqueue(reset_fnic_work_queue); 1341 err_create_reset_fnic_workq: 1342 destroy_workqueue(fnic_event_queue); 1343 err_create_fnic_workq: 1344 kmem_cache_destroy(fdls_frame_elem_cache); 1345 err_create_fdls_frame_cache_elem: 1346 kmem_cache_destroy(fdls_frame_cache); 1347 err_create_fdls_frame_cache: 1348 kmem_cache_destroy(fnic_io_req_cache); 1349 err_create_fnic_ioreq_slab: 1350 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1351 err_create_fnic_sgl_slab_max: 1352 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1353 err_create_fnic_sgl_slab_dflt: 1354 fnic_trace_free(); 1355 fnic_fc_trace_free(); 1356 fnic_debugfs_terminate(); 1357 return err; 1358 } 1359 1360 static void __exit fnic_cleanup_module(void) 1361 { 1362 pci_unregister_driver(&fnic_driver); 1363 destroy_workqueue(fnic_event_queue); 1364 1365 if (pc_rscn_handling_feature_flag == PC_RSCN_HANDLING_FEATURE_ON) 1366 destroy_workqueue(reset_fnic_work_queue); 1367 1368 if (fnic_fip_queue) 1369 destroy_workqueue(fnic_fip_queue); 1370 1371 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1372 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1373 kmem_cache_destroy(fnic_io_req_cache); 1374 kmem_cache_destroy(fdls_frame_cache); 1375 fc_release_transport(fnic_fc_transport); 1376 fnic_trace_free(); 1377 fnic_fc_trace_free(); 1378 fnic_debugfs_terminate(); 1379 ida_destroy(&fnic_ida); 1380 } 1381 1382 module_init(fnic_init_module); 1383 module_exit(fnic_cleanup_module); 1384