1 /* 2 * Copyright 2008 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 * 5 * This program is free software; you may redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; version 2 of the License. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 16 * SOFTWARE. 17 */ 18 #include <linux/module.h> 19 #include <linux/mempool.h> 20 #include <linux/string.h> 21 #include <linux/slab.h> 22 #include <linux/errno.h> 23 #include <linux/init.h> 24 #include <linux/pci.h> 25 #include <linux/skbuff.h> 26 #include <linux/interrupt.h> 27 #include <linux/spinlock.h> 28 #include <linux/workqueue.h> 29 #include <linux/if_ether.h> 30 #include <scsi/fc/fc_fip.h> 31 #include <scsi/scsi_host.h> 32 #include <scsi/scsi_transport.h> 33 #include <scsi/scsi_transport_fc.h> 34 #include <scsi/scsi_tcq.h> 35 #include <scsi/libfc.h> 36 #include <scsi/fc_frame.h> 37 38 #include "vnic_dev.h" 39 #include "vnic_intr.h" 40 #include "vnic_stats.h" 41 #include "fnic_io.h" 42 #include "fnic_fip.h" 43 #include "fnic.h" 44 45 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045 46 47 /* Timer to poll notification area for events. Used for MSI interrupts */ 48 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ) 49 50 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; 51 static struct kmem_cache *fnic_io_req_cache; 52 LIST_HEAD(fnic_list); 53 DEFINE_SPINLOCK(fnic_list_lock); 54 55 /* Supported devices by fnic module */ 56 static struct pci_device_id fnic_id_table[] = { 57 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, 58 { 0, } 59 }; 60 61 MODULE_DESCRIPTION(DRV_DESCRIPTION); 62 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " 63 "Joseph R. Eykholt <jeykholt@cisco.com>"); 64 MODULE_LICENSE("GPL v2"); 65 MODULE_VERSION(DRV_VERSION); 66 MODULE_DEVICE_TABLE(pci, fnic_id_table); 67 68 unsigned int fnic_log_level; 69 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); 70 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); 71 72 unsigned int fnic_trace_max_pages = 16; 73 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR); 74 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages " 75 "for fnic 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 sdev->tagged_supported = 1; 94 95 if (!rport || fc_remote_port_chkready(rport)) 96 return -ENXIO; 97 98 scsi_activate_tcq(sdev, fnic_max_qdepth); 99 return 0; 100 } 101 102 static struct scsi_host_template fnic_host_template = { 103 .module = THIS_MODULE, 104 .name = DRV_NAME, 105 .queuecommand = fnic_queuecommand, 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 = fc_change_queue_depth, 111 .change_queue_type = fc_change_queue_type, 112 .this_id = -1, 113 .cmd_per_lun = 3, 114 .can_queue = FNIC_MAX_IO_REQ, 115 .use_clustering = ENABLE_CLUSTERING, 116 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 117 .max_sectors = 0xffff, 118 .shost_attrs = fnic_attrs, 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 10000: 176 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 177 break; 178 default: 179 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 180 break; 181 } 182 } 183 184 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 185 { 186 int ret; 187 struct fc_lport *lp = shost_priv(host); 188 struct fnic *fnic = lport_priv(lp); 189 struct fc_host_statistics *stats = &lp->host_stats; 190 struct vnic_stats *vs; 191 unsigned long flags; 192 193 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 194 return stats; 195 fnic->stats_time = jiffies; 196 197 spin_lock_irqsave(&fnic->fnic_lock, flags); 198 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 199 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 200 201 if (ret) { 202 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 203 "fnic: Get vnic stats failed" 204 " 0x%x", ret); 205 return stats; 206 } 207 vs = fnic->stats; 208 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 209 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 210 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 211 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 212 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 213 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 214 stats->invalid_crc_count = vs->rx.rx_crc_errors; 215 stats->seconds_since_last_reset = 216 (jiffies - fnic->stats_reset_time) / HZ; 217 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 218 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 219 220 return stats; 221 } 222 223 /* 224 * fnic_dump_fchost_stats 225 * note : dumps fc_statistics into system logs 226 */ 227 void fnic_dump_fchost_stats(struct Scsi_Host *host, 228 struct fc_host_statistics *stats) 229 { 230 FNIC_MAIN_NOTE(KERN_NOTICE, host, 231 "fnic: seconds since last reset = %llu\n", 232 stats->seconds_since_last_reset); 233 FNIC_MAIN_NOTE(KERN_NOTICE, host, 234 "fnic: tx frames = %llu\n", 235 stats->tx_frames); 236 FNIC_MAIN_NOTE(KERN_NOTICE, host, 237 "fnic: tx words = %llu\n", 238 stats->tx_words); 239 FNIC_MAIN_NOTE(KERN_NOTICE, host, 240 "fnic: rx frames = %llu\n", 241 stats->rx_frames); 242 FNIC_MAIN_NOTE(KERN_NOTICE, host, 243 "fnic: rx words = %llu\n", 244 stats->rx_words); 245 FNIC_MAIN_NOTE(KERN_NOTICE, host, 246 "fnic: lip count = %llu\n", 247 stats->lip_count); 248 FNIC_MAIN_NOTE(KERN_NOTICE, host, 249 "fnic: nos count = %llu\n", 250 stats->nos_count); 251 FNIC_MAIN_NOTE(KERN_NOTICE, host, 252 "fnic: error frames = %llu\n", 253 stats->error_frames); 254 FNIC_MAIN_NOTE(KERN_NOTICE, host, 255 "fnic: dumped frames = %llu\n", 256 stats->dumped_frames); 257 FNIC_MAIN_NOTE(KERN_NOTICE, host, 258 "fnic: link failure count = %llu\n", 259 stats->link_failure_count); 260 FNIC_MAIN_NOTE(KERN_NOTICE, host, 261 "fnic: loss of sync count = %llu\n", 262 stats->loss_of_sync_count); 263 FNIC_MAIN_NOTE(KERN_NOTICE, host, 264 "fnic: loss of signal count = %llu\n", 265 stats->loss_of_signal_count); 266 FNIC_MAIN_NOTE(KERN_NOTICE, host, 267 "fnic: prim seq protocol err count = %llu\n", 268 stats->prim_seq_protocol_err_count); 269 FNIC_MAIN_NOTE(KERN_NOTICE, host, 270 "fnic: invalid tx word count= %llu\n", 271 stats->invalid_tx_word_count); 272 FNIC_MAIN_NOTE(KERN_NOTICE, host, 273 "fnic: invalid crc count = %llu\n", 274 stats->invalid_crc_count); 275 FNIC_MAIN_NOTE(KERN_NOTICE, host, 276 "fnic: fcp input requests = %llu\n", 277 stats->fcp_input_requests); 278 FNIC_MAIN_NOTE(KERN_NOTICE, host, 279 "fnic: fcp output requests = %llu\n", 280 stats->fcp_output_requests); 281 FNIC_MAIN_NOTE(KERN_NOTICE, host, 282 "fnic: fcp control requests = %llu\n", 283 stats->fcp_control_requests); 284 FNIC_MAIN_NOTE(KERN_NOTICE, host, 285 "fnic: fcp input megabytes = %llu\n", 286 stats->fcp_input_megabytes); 287 FNIC_MAIN_NOTE(KERN_NOTICE, host, 288 "fnic: fcp output megabytes = %llu\n", 289 stats->fcp_output_megabytes); 290 return; 291 } 292 293 /* 294 * fnic_reset_host_stats : clears host stats 295 * note : called when reset_statistics set under sysfs dir 296 */ 297 static void fnic_reset_host_stats(struct Scsi_Host *host) 298 { 299 int ret; 300 struct fc_lport *lp = shost_priv(host); 301 struct fnic *fnic = lport_priv(lp); 302 struct fc_host_statistics *stats; 303 unsigned long flags; 304 305 /* dump current stats, before clearing them */ 306 stats = fnic_get_stats(host); 307 fnic_dump_fchost_stats(host, stats); 308 309 spin_lock_irqsave(&fnic->fnic_lock, flags); 310 ret = vnic_dev_stats_clear(fnic->vdev); 311 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 312 313 if (ret) { 314 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 315 "fnic: Reset vnic stats failed" 316 " 0x%x", ret); 317 return; 318 } 319 fnic->stats_reset_time = jiffies; 320 memset(stats, 0, sizeof(*stats)); 321 322 return; 323 } 324 325 void fnic_log_q_error(struct fnic *fnic) 326 { 327 unsigned int i; 328 u32 error_status; 329 330 for (i = 0; i < fnic->raw_wq_count; i++) { 331 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 332 if (error_status) 333 shost_printk(KERN_ERR, fnic->lport->host, 334 "WQ[%d] error_status" 335 " %d\n", i, error_status); 336 } 337 338 for (i = 0; i < fnic->rq_count; i++) { 339 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 340 if (error_status) 341 shost_printk(KERN_ERR, fnic->lport->host, 342 "RQ[%d] error_status" 343 " %d\n", i, error_status); 344 } 345 346 for (i = 0; i < fnic->wq_copy_count; i++) { 347 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); 348 if (error_status) 349 shost_printk(KERN_ERR, fnic->lport->host, 350 "CWQ[%d] error_status" 351 " %d\n", i, error_status); 352 } 353 } 354 355 void fnic_handle_link_event(struct fnic *fnic) 356 { 357 unsigned long flags; 358 359 spin_lock_irqsave(&fnic->fnic_lock, flags); 360 if (fnic->stop_rx_link_events) { 361 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 362 return; 363 } 364 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 365 366 queue_work(fnic_event_queue, &fnic->link_work); 367 368 } 369 370 static int fnic_notify_set(struct fnic *fnic) 371 { 372 int err; 373 374 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 375 case VNIC_DEV_INTR_MODE_INTX: 376 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 377 break; 378 case VNIC_DEV_INTR_MODE_MSI: 379 err = vnic_dev_notify_set(fnic->vdev, -1); 380 break; 381 case VNIC_DEV_INTR_MODE_MSIX: 382 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); 383 break; 384 default: 385 shost_printk(KERN_ERR, fnic->lport->host, 386 "Interrupt mode should be set up" 387 " before devcmd notify set %d\n", 388 vnic_dev_get_intr_mode(fnic->vdev)); 389 err = -1; 390 break; 391 } 392 393 return err; 394 } 395 396 static void fnic_notify_timer(unsigned long data) 397 { 398 struct fnic *fnic = (struct fnic *)data; 399 400 fnic_handle_link_event(fnic); 401 mod_timer(&fnic->notify_timer, 402 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 403 } 404 405 static void fnic_fip_notify_timer(unsigned long data) 406 { 407 struct fnic *fnic = (struct fnic *)data; 408 409 fnic_handle_fip_timer(fnic); 410 } 411 412 static void fnic_notify_timer_start(struct fnic *fnic) 413 { 414 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 415 case VNIC_DEV_INTR_MODE_MSI: 416 /* 417 * Schedule first timeout immediately. The driver is 418 * initiatialized and ready to look for link up notification 419 */ 420 mod_timer(&fnic->notify_timer, jiffies); 421 break; 422 default: 423 /* Using intr for notification for INTx/MSI-X */ 424 break; 425 }; 426 } 427 428 static int fnic_dev_wait(struct vnic_dev *vdev, 429 int (*start)(struct vnic_dev *, int), 430 int (*finished)(struct vnic_dev *, int *), 431 int arg) 432 { 433 unsigned long time; 434 int done; 435 int err; 436 437 err = start(vdev, arg); 438 if (err) 439 return err; 440 441 /* Wait for func to complete...2 seconds max */ 442 time = jiffies + (HZ * 2); 443 do { 444 err = finished(vdev, &done); 445 if (err) 446 return err; 447 if (done) 448 return 0; 449 schedule_timeout_uninterruptible(HZ / 10); 450 } while (time_after(time, jiffies)); 451 452 return -ETIMEDOUT; 453 } 454 455 static int fnic_cleanup(struct fnic *fnic) 456 { 457 unsigned int i; 458 int err; 459 460 vnic_dev_disable(fnic->vdev); 461 for (i = 0; i < fnic->intr_count; i++) 462 vnic_intr_mask(&fnic->intr[i]); 463 464 for (i = 0; i < fnic->rq_count; i++) { 465 err = vnic_rq_disable(&fnic->rq[i]); 466 if (err) 467 return err; 468 } 469 for (i = 0; i < fnic->raw_wq_count; i++) { 470 err = vnic_wq_disable(&fnic->wq[i]); 471 if (err) 472 return err; 473 } 474 for (i = 0; i < fnic->wq_copy_count; i++) { 475 err = vnic_wq_copy_disable(&fnic->wq_copy[i]); 476 if (err) 477 return err; 478 } 479 480 /* Clean up completed IOs and FCS frames */ 481 fnic_wq_copy_cmpl_handler(fnic, -1); 482 fnic_wq_cmpl_handler(fnic, -1); 483 fnic_rq_cmpl_handler(fnic, -1); 484 485 /* Clean up the IOs and FCS frames that have not completed */ 486 for (i = 0; i < fnic->raw_wq_count; i++) 487 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 488 for (i = 0; i < fnic->rq_count; i++) 489 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 490 for (i = 0; i < fnic->wq_copy_count; i++) 491 vnic_wq_copy_clean(&fnic->wq_copy[i], 492 fnic_wq_copy_cleanup_handler); 493 494 for (i = 0; i < fnic->cq_count; i++) 495 vnic_cq_clean(&fnic->cq[i]); 496 for (i = 0; i < fnic->intr_count; i++) 497 vnic_intr_clean(&fnic->intr[i]); 498 499 mempool_destroy(fnic->io_req_pool); 500 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 501 mempool_destroy(fnic->io_sgl_pool[i]); 502 503 return 0; 504 } 505 506 static void fnic_iounmap(struct fnic *fnic) 507 { 508 if (fnic->bar0.vaddr) 509 iounmap(fnic->bar0.vaddr); 510 } 511 512 /** 513 * fnic_get_mac() - get assigned data MAC address for FIP code. 514 * @lport: local port. 515 */ 516 static u8 *fnic_get_mac(struct fc_lport *lport) 517 { 518 struct fnic *fnic = lport_priv(lport); 519 520 return fnic->data_src_addr; 521 } 522 523 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id) 524 { 525 u16 old_vlan; 526 old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id); 527 } 528 529 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 530 { 531 struct Scsi_Host *host; 532 struct fc_lport *lp; 533 struct fnic *fnic; 534 mempool_t *pool; 535 int err; 536 int i; 537 unsigned long flags; 538 539 /* 540 * Allocate SCSI Host and set up association between host, 541 * local port, and fnic 542 */ 543 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic)); 544 if (!lp) { 545 printk(KERN_ERR PFX "Unable to alloc libfc local port\n"); 546 err = -ENOMEM; 547 goto err_out; 548 } 549 host = lp->host; 550 fnic = lport_priv(lp); 551 fnic->lport = lp; 552 fnic->ctlr.lp = lp; 553 554 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 555 host->host_no); 556 557 host->transportt = fnic_fc_transport; 558 559 /* Setup PCI resources */ 560 pci_set_drvdata(pdev, fnic); 561 562 fnic->pdev = pdev; 563 564 err = pci_enable_device(pdev); 565 if (err) { 566 shost_printk(KERN_ERR, fnic->lport->host, 567 "Cannot enable PCI device, aborting.\n"); 568 goto err_out_free_hba; 569 } 570 571 err = pci_request_regions(pdev, DRV_NAME); 572 if (err) { 573 shost_printk(KERN_ERR, fnic->lport->host, 574 "Cannot enable PCI resources, aborting\n"); 575 goto err_out_disable_device; 576 } 577 578 pci_set_master(pdev); 579 580 /* Query PCI controller on system for DMA addressing 581 * limitation for the device. Try 64-bit first, and 582 * fail to 32-bit. 583 */ 584 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 585 if (err) { 586 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 587 if (err) { 588 shost_printk(KERN_ERR, fnic->lport->host, 589 "No usable DMA configuration " 590 "aborting\n"); 591 goto err_out_release_regions; 592 } 593 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 594 if (err) { 595 shost_printk(KERN_ERR, fnic->lport->host, 596 "Unable to obtain 32-bit DMA " 597 "for consistent allocations, aborting.\n"); 598 goto err_out_release_regions; 599 } 600 } else { 601 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 602 if (err) { 603 shost_printk(KERN_ERR, fnic->lport->host, 604 "Unable to obtain 64-bit DMA " 605 "for consistent allocations, aborting.\n"); 606 goto err_out_release_regions; 607 } 608 } 609 610 /* Map vNIC resources from BAR0 */ 611 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 612 shost_printk(KERN_ERR, fnic->lport->host, 613 "BAR0 not memory-map'able, aborting.\n"); 614 err = -ENODEV; 615 goto err_out_release_regions; 616 } 617 618 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 619 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 620 fnic->bar0.len = pci_resource_len(pdev, 0); 621 622 if (!fnic->bar0.vaddr) { 623 shost_printk(KERN_ERR, fnic->lport->host, 624 "Cannot memory-map BAR0 res hdr, " 625 "aborting.\n"); 626 err = -ENODEV; 627 goto err_out_release_regions; 628 } 629 630 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 631 if (!fnic->vdev) { 632 shost_printk(KERN_ERR, fnic->lport->host, 633 "vNIC registration failed, " 634 "aborting.\n"); 635 err = -ENODEV; 636 goto err_out_iounmap; 637 } 638 639 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 640 vnic_dev_open_done, 0); 641 if (err) { 642 shost_printk(KERN_ERR, fnic->lport->host, 643 "vNIC dev open failed, aborting.\n"); 644 goto err_out_vnic_unregister; 645 } 646 647 err = vnic_dev_init(fnic->vdev, 0); 648 if (err) { 649 shost_printk(KERN_ERR, fnic->lport->host, 650 "vNIC dev init failed, aborting.\n"); 651 goto err_out_dev_close; 652 } 653 654 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 655 if (err) { 656 shost_printk(KERN_ERR, fnic->lport->host, 657 "vNIC get MAC addr failed \n"); 658 goto err_out_dev_close; 659 } 660 /* set data_src for point-to-point mode and to keep it non-zero */ 661 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN); 662 663 /* Get vNIC configuration */ 664 err = fnic_get_vnic_config(fnic); 665 if (err) { 666 shost_printk(KERN_ERR, fnic->lport->host, 667 "Get vNIC configuration failed, " 668 "aborting.\n"); 669 goto err_out_dev_close; 670 } 671 672 /* Configure Maximum Outstanding IO reqs*/ 673 if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) { 674 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ, 675 max_t(u32, FNIC_MIN_IO_REQ, 676 fnic->config.io_throttle_count)); 677 } 678 fnic->fnic_max_tag_id = host->can_queue; 679 680 err = scsi_init_shared_tag_map(host, fnic->fnic_max_tag_id); 681 if (err) { 682 shost_printk(KERN_ERR, fnic->lport->host, 683 "Unable to alloc shared tag map\n"); 684 goto err_out_dev_close; 685 } 686 687 host->max_lun = fnic->config.luns_per_tgt; 688 host->max_id = FNIC_MAX_FCP_TARGET; 689 host->max_cmd_len = FCOE_MAX_CMD_LEN; 690 691 fnic_get_res_counts(fnic); 692 693 err = fnic_set_intr_mode(fnic); 694 if (err) { 695 shost_printk(KERN_ERR, fnic->lport->host, 696 "Failed to set intr mode, " 697 "aborting.\n"); 698 goto err_out_dev_close; 699 } 700 701 err = fnic_alloc_vnic_resources(fnic); 702 if (err) { 703 shost_printk(KERN_ERR, fnic->lport->host, 704 "Failed to alloc vNIC resources, " 705 "aborting.\n"); 706 goto err_out_clear_intr; 707 } 708 709 710 /* initialize all fnic locks */ 711 spin_lock_init(&fnic->fnic_lock); 712 713 for (i = 0; i < FNIC_WQ_MAX; i++) 714 spin_lock_init(&fnic->wq_lock[i]); 715 716 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 717 spin_lock_init(&fnic->wq_copy_lock[i]); 718 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 719 fnic->fw_ack_recd[i] = 0; 720 fnic->fw_ack_index[i] = -1; 721 } 722 723 for (i = 0; i < FNIC_IO_LOCKS; i++) 724 spin_lock_init(&fnic->io_req_lock[i]); 725 726 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 727 if (!fnic->io_req_pool) 728 goto err_out_free_resources; 729 730 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 731 if (!pool) 732 goto err_out_free_ioreq_pool; 733 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 734 735 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 736 if (!pool) 737 goto err_out_free_dflt_pool; 738 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 739 740 /* setup vlan config, hw inserts vlan header */ 741 fnic->vlan_hw_insert = 1; 742 fnic->vlan_id = 0; 743 744 /* Initialize the FIP fcoe_ctrl struct */ 745 fnic->ctlr.send = fnic_eth_send; 746 fnic->ctlr.update_mac = fnic_update_mac; 747 fnic->ctlr.get_src_addr = fnic_get_mac; 748 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 749 shost_printk(KERN_INFO, fnic->lport->host, 750 "firmware supports FIP\n"); 751 /* enable directed and multicast */ 752 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); 753 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 754 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 755 fnic->set_vlan = fnic_set_vlan; 756 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); 757 setup_timer(&fnic->fip_timer, fnic_fip_notify_timer, 758 (unsigned long)fnic); 759 spin_lock_init(&fnic->vlans_lock); 760 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame); 761 INIT_WORK(&fnic->event_work, fnic_handle_event); 762 skb_queue_head_init(&fnic->fip_frame_queue); 763 INIT_LIST_HEAD(&fnic->evlist); 764 INIT_LIST_HEAD(&fnic->vlans); 765 } else { 766 shost_printk(KERN_INFO, fnic->lport->host, 767 "firmware uses non-FIP mode\n"); 768 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); 769 } 770 fnic->state = FNIC_IN_FC_MODE; 771 772 atomic_set(&fnic->in_flight, 0); 773 fnic->state_flags = FNIC_FLAGS_NONE; 774 775 /* Enable hardware stripping of vlan header on ingress */ 776 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 777 778 /* Setup notification buffer area */ 779 err = fnic_notify_set(fnic); 780 if (err) { 781 shost_printk(KERN_ERR, fnic->lport->host, 782 "Failed to alloc notify buffer, aborting.\n"); 783 goto err_out_free_max_pool; 784 } 785 786 /* Setup notify timer when using MSI interrupts */ 787 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 788 setup_timer(&fnic->notify_timer, 789 fnic_notify_timer, (unsigned long)fnic); 790 791 /* allocate RQ buffers and post them to RQ*/ 792 for (i = 0; i < fnic->rq_count; i++) { 793 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 794 if (err) { 795 shost_printk(KERN_ERR, fnic->lport->host, 796 "fnic_alloc_rq_frame can't alloc " 797 "frame\n"); 798 goto err_out_free_rq_buf; 799 } 800 } 801 802 /* 803 * Initialization done with PCI system, hardware, firmware. 804 * Add host to SCSI 805 */ 806 err = scsi_add_host(lp->host, &pdev->dev); 807 if (err) { 808 shost_printk(KERN_ERR, fnic->lport->host, 809 "fnic: scsi_add_host failed...exiting\n"); 810 goto err_out_free_rq_buf; 811 } 812 813 /* Start local port initiatialization */ 814 815 lp->link_up = 0; 816 817 lp->max_retry_count = fnic->config.flogi_retries; 818 lp->max_rport_retry_count = fnic->config.plogi_retries; 819 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 820 FCP_SPPF_CONF_COMPL); 821 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 822 lp->service_params |= FCP_SPPF_RETRY; 823 824 lp->boot_time = jiffies; 825 lp->e_d_tov = fnic->config.ed_tov; 826 lp->r_a_tov = fnic->config.ra_tov; 827 lp->link_supported_speeds = FC_PORTSPEED_10GBIT; 828 fc_set_wwnn(lp, fnic->config.node_wwn); 829 fc_set_wwpn(lp, fnic->config.port_wwn); 830 831 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); 832 833 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 834 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 835 err = -ENOMEM; 836 goto err_out_remove_scsi_host; 837 } 838 839 fc_lport_init_stats(lp); 840 fnic->stats_reset_time = jiffies; 841 842 fc_lport_config(lp); 843 844 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + 845 sizeof(struct fc_frame_header))) { 846 err = -EINVAL; 847 goto err_out_free_exch_mgr; 848 } 849 fc_host_maxframe_size(lp->host) = lp->mfs; 850 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000; 851 852 sprintf(fc_host_symbolic_name(lp->host), 853 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 854 855 spin_lock_irqsave(&fnic_list_lock, flags); 856 list_add_tail(&fnic->list, &fnic_list); 857 spin_unlock_irqrestore(&fnic_list_lock, flags); 858 859 INIT_WORK(&fnic->link_work, fnic_handle_link); 860 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 861 skb_queue_head_init(&fnic->frame_queue); 862 skb_queue_head_init(&fnic->tx_queue); 863 864 /* Enable all queues */ 865 for (i = 0; i < fnic->raw_wq_count; i++) 866 vnic_wq_enable(&fnic->wq[i]); 867 for (i = 0; i < fnic->rq_count; i++) 868 vnic_rq_enable(&fnic->rq[i]); 869 for (i = 0; i < fnic->wq_copy_count; i++) 870 vnic_wq_copy_enable(&fnic->wq_copy[i]); 871 872 fc_fabric_login(lp); 873 874 vnic_dev_enable(fnic->vdev); 875 876 err = fnic_request_intr(fnic); 877 if (err) { 878 shost_printk(KERN_ERR, fnic->lport->host, 879 "Unable to request irq.\n"); 880 goto err_out_free_exch_mgr; 881 } 882 883 for (i = 0; i < fnic->intr_count; i++) 884 vnic_intr_unmask(&fnic->intr[i]); 885 886 fnic_notify_timer_start(fnic); 887 888 return 0; 889 890 err_out_free_exch_mgr: 891 fc_exch_mgr_free(lp); 892 err_out_remove_scsi_host: 893 fc_remove_host(lp->host); 894 scsi_remove_host(lp->host); 895 err_out_free_rq_buf: 896 for (i = 0; i < fnic->rq_count; i++) 897 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 898 vnic_dev_notify_unset(fnic->vdev); 899 err_out_free_max_pool: 900 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 901 err_out_free_dflt_pool: 902 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 903 err_out_free_ioreq_pool: 904 mempool_destroy(fnic->io_req_pool); 905 err_out_free_resources: 906 fnic_free_vnic_resources(fnic); 907 err_out_clear_intr: 908 fnic_clear_intr_mode(fnic); 909 err_out_dev_close: 910 vnic_dev_close(fnic->vdev); 911 err_out_vnic_unregister: 912 vnic_dev_unregister(fnic->vdev); 913 err_out_iounmap: 914 fnic_iounmap(fnic); 915 err_out_release_regions: 916 pci_release_regions(pdev); 917 err_out_disable_device: 918 pci_disable_device(pdev); 919 err_out_free_hba: 920 scsi_host_put(lp->host); 921 err_out: 922 return err; 923 } 924 925 static void fnic_remove(struct pci_dev *pdev) 926 { 927 struct fnic *fnic = pci_get_drvdata(pdev); 928 struct fc_lport *lp = fnic->lport; 929 unsigned long flags; 930 931 /* 932 * Mark state so that the workqueue thread stops forwarding 933 * received frames and link events to the local port. ISR and 934 * other threads that can queue work items will also stop 935 * creating work items on the fnic workqueue 936 */ 937 spin_lock_irqsave(&fnic->fnic_lock, flags); 938 fnic->stop_rx_link_events = 1; 939 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 940 941 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 942 del_timer_sync(&fnic->notify_timer); 943 944 /* 945 * Flush the fnic event queue. After this call, there should 946 * be no event queued for this fnic device in the workqueue 947 */ 948 flush_workqueue(fnic_event_queue); 949 skb_queue_purge(&fnic->frame_queue); 950 skb_queue_purge(&fnic->tx_queue); 951 952 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 953 del_timer_sync(&fnic->fip_timer); 954 skb_queue_purge(&fnic->fip_frame_queue); 955 fnic_fcoe_reset_vlans(fnic); 956 fnic_fcoe_evlist_free(fnic); 957 } 958 959 /* 960 * Log off the fabric. This stops all remote ports, dns port, 961 * logs off the fabric. This flushes all rport, disc, lport work 962 * before returning 963 */ 964 fc_fabric_logoff(fnic->lport); 965 966 spin_lock_irqsave(&fnic->fnic_lock, flags); 967 fnic->in_remove = 1; 968 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 969 970 fcoe_ctlr_destroy(&fnic->ctlr); 971 fc_lport_destroy(lp); 972 973 /* 974 * This stops the fnic device, masks all interrupts. Completed 975 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 976 * cleaned up 977 */ 978 fnic_cleanup(fnic); 979 980 BUG_ON(!skb_queue_empty(&fnic->frame_queue)); 981 BUG_ON(!skb_queue_empty(&fnic->tx_queue)); 982 983 spin_lock_irqsave(&fnic_list_lock, flags); 984 list_del(&fnic->list); 985 spin_unlock_irqrestore(&fnic_list_lock, flags); 986 987 fc_remove_host(fnic->lport->host); 988 scsi_remove_host(fnic->lport->host); 989 fc_exch_mgr_free(fnic->lport); 990 vnic_dev_notify_unset(fnic->vdev); 991 fnic_free_intr(fnic); 992 fnic_free_vnic_resources(fnic); 993 fnic_clear_intr_mode(fnic); 994 vnic_dev_close(fnic->vdev); 995 vnic_dev_unregister(fnic->vdev); 996 fnic_iounmap(fnic); 997 pci_release_regions(pdev); 998 pci_disable_device(pdev); 999 pci_set_drvdata(pdev, NULL); 1000 scsi_host_put(lp->host); 1001 } 1002 1003 static struct pci_driver fnic_driver = { 1004 .name = DRV_NAME, 1005 .id_table = fnic_id_table, 1006 .probe = fnic_probe, 1007 .remove = fnic_remove, 1008 }; 1009 1010 static int __init fnic_init_module(void) 1011 { 1012 size_t len; 1013 int err = 0; 1014 1015 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 1016 1017 /* Allocate memory for trace buffer */ 1018 err = fnic_trace_buf_init(); 1019 if (err < 0) { 1020 printk(KERN_ERR PFX "Trace buffer initialization Failed " 1021 "Fnic Tracing utility is disabled\n"); 1022 fnic_trace_free(); 1023 } 1024 1025 /* Create a cache for allocation of default size sgls */ 1026 len = sizeof(struct fnic_dflt_sgl_list); 1027 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 1028 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 1029 SLAB_HWCACHE_ALIGN, 1030 NULL); 1031 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 1032 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 1033 err = -ENOMEM; 1034 goto err_create_fnic_sgl_slab_dflt; 1035 } 1036 1037 /* Create a cache for allocation of max size sgls*/ 1038 len = sizeof(struct fnic_sgl_list); 1039 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 1040 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 1041 SLAB_HWCACHE_ALIGN, 1042 NULL); 1043 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 1044 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 1045 err = -ENOMEM; 1046 goto err_create_fnic_sgl_slab_max; 1047 } 1048 1049 /* Create a cache of io_req structs for use via mempool */ 1050 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 1051 sizeof(struct fnic_io_req), 1052 0, SLAB_HWCACHE_ALIGN, NULL); 1053 if (!fnic_io_req_cache) { 1054 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 1055 err = -ENOMEM; 1056 goto err_create_fnic_ioreq_slab; 1057 } 1058 1059 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); 1060 if (!fnic_event_queue) { 1061 printk(KERN_ERR PFX "fnic work queue create failed\n"); 1062 err = -ENOMEM; 1063 goto err_create_fnic_workq; 1064 } 1065 1066 spin_lock_init(&fnic_list_lock); 1067 INIT_LIST_HEAD(&fnic_list); 1068 1069 fnic_fip_queue = create_singlethread_workqueue("fnic_fip_q"); 1070 if (!fnic_fip_queue) { 1071 printk(KERN_ERR PFX "fnic FIP work queue create failed\n"); 1072 err = -ENOMEM; 1073 goto err_create_fip_workq; 1074 } 1075 1076 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 1077 if (!fnic_fc_transport) { 1078 printk(KERN_ERR PFX "fc_attach_transport error\n"); 1079 err = -ENOMEM; 1080 goto err_fc_transport; 1081 } 1082 1083 /* register the driver with PCI system */ 1084 err = pci_register_driver(&fnic_driver); 1085 if (err < 0) { 1086 printk(KERN_ERR PFX "pci register error\n"); 1087 goto err_pci_register; 1088 } 1089 return err; 1090 1091 err_pci_register: 1092 fc_release_transport(fnic_fc_transport); 1093 err_fc_transport: 1094 destroy_workqueue(fnic_fip_queue); 1095 err_create_fip_workq: 1096 destroy_workqueue(fnic_event_queue); 1097 err_create_fnic_workq: 1098 kmem_cache_destroy(fnic_io_req_cache); 1099 err_create_fnic_ioreq_slab: 1100 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1101 err_create_fnic_sgl_slab_max: 1102 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1103 err_create_fnic_sgl_slab_dflt: 1104 fnic_trace_free(); 1105 return err; 1106 } 1107 1108 static void __exit fnic_cleanup_module(void) 1109 { 1110 pci_unregister_driver(&fnic_driver); 1111 destroy_workqueue(fnic_event_queue); 1112 if (fnic_fip_queue) { 1113 flush_workqueue(fnic_fip_queue); 1114 destroy_workqueue(fnic_fip_queue); 1115 } 1116 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1117 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1118 kmem_cache_destroy(fnic_io_req_cache); 1119 fc_release_transport(fnic_fc_transport); 1120 fnic_trace_free(); 1121 } 1122 1123 module_init(fnic_init_module); 1124 module_exit(fnic_cleanup_module); 1125 1126