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 struct libfc_function_template fnic_transport_template = { 78 .frame_send = fnic_send, 79 .lport_set_port_id = fnic_set_port_id, 80 .fcp_abort_io = fnic_empty_scsi_cleanup, 81 .fcp_cleanup = fnic_empty_scsi_cleanup, 82 .exch_mgr_reset = fnic_exch_mgr_reset 83 }; 84 85 static int fnic_slave_alloc(struct scsi_device *sdev) 86 { 87 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 88 89 sdev->tagged_supported = 1; 90 91 if (!rport || fc_remote_port_chkready(rport)) 92 return -ENXIO; 93 94 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); 95 return 0; 96 } 97 98 static struct scsi_host_template fnic_host_template = { 99 .module = THIS_MODULE, 100 .name = DRV_NAME, 101 .queuecommand = fnic_queuecommand, 102 .eh_abort_handler = fnic_abort_cmd, 103 .eh_device_reset_handler = fnic_device_reset, 104 .eh_host_reset_handler = fnic_host_reset, 105 .slave_alloc = fnic_slave_alloc, 106 .change_queue_depth = fc_change_queue_depth, 107 .change_queue_type = fc_change_queue_type, 108 .this_id = -1, 109 .cmd_per_lun = 3, 110 .can_queue = FNIC_MAX_IO_REQ, 111 .use_clustering = ENABLE_CLUSTERING, 112 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 113 .max_sectors = 0xffff, 114 .shost_attrs = fnic_attrs, 115 }; 116 117 static void 118 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 119 { 120 if (timeout) 121 rport->dev_loss_tmo = timeout; 122 else 123 rport->dev_loss_tmo = 1; 124 } 125 126 static void fnic_get_host_speed(struct Scsi_Host *shost); 127 static struct scsi_transport_template *fnic_fc_transport; 128 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 129 130 static struct fc_function_template fnic_fc_functions = { 131 132 .show_host_node_name = 1, 133 .show_host_port_name = 1, 134 .show_host_supported_classes = 1, 135 .show_host_supported_fc4s = 1, 136 .show_host_active_fc4s = 1, 137 .show_host_maxframe_size = 1, 138 .show_host_port_id = 1, 139 .show_host_supported_speeds = 1, 140 .get_host_speed = fnic_get_host_speed, 141 .show_host_speed = 1, 142 .show_host_port_type = 1, 143 .get_host_port_state = fc_get_host_port_state, 144 .show_host_port_state = 1, 145 .show_host_symbolic_name = 1, 146 .show_rport_maxframe_size = 1, 147 .show_rport_supported_classes = 1, 148 .show_host_fabric_name = 1, 149 .show_starget_node_name = 1, 150 .show_starget_port_name = 1, 151 .show_starget_port_id = 1, 152 .show_rport_dev_loss_tmo = 1, 153 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo, 154 .issue_fc_host_lip = fnic_reset, 155 .get_fc_host_stats = fnic_get_stats, 156 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), 157 .terminate_rport_io = fnic_terminate_rport_io, 158 .bsg_request = fc_lport_bsg_request, 159 }; 160 161 static void fnic_get_host_speed(struct Scsi_Host *shost) 162 { 163 struct fc_lport *lp = shost_priv(shost); 164 struct fnic *fnic = lport_priv(lp); 165 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 166 167 /* Add in other values as they get defined in fw */ 168 switch (port_speed) { 169 case 10000: 170 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 171 break; 172 default: 173 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 174 break; 175 } 176 } 177 178 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 179 { 180 int ret; 181 struct fc_lport *lp = shost_priv(host); 182 struct fnic *fnic = lport_priv(lp); 183 struct fc_host_statistics *stats = &lp->host_stats; 184 struct vnic_stats *vs; 185 unsigned long flags; 186 187 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 188 return stats; 189 fnic->stats_time = jiffies; 190 191 spin_lock_irqsave(&fnic->fnic_lock, flags); 192 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 193 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 194 195 if (ret) { 196 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 197 "fnic: Get vnic stats failed" 198 " 0x%x", ret); 199 return stats; 200 } 201 vs = fnic->stats; 202 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 203 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 204 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 205 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 206 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 207 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 208 stats->invalid_crc_count = vs->rx.rx_crc_errors; 209 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ; 210 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 211 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 212 213 return stats; 214 } 215 216 void fnic_log_q_error(struct fnic *fnic) 217 { 218 unsigned int i; 219 u32 error_status; 220 221 for (i = 0; i < fnic->raw_wq_count; i++) { 222 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 223 if (error_status) 224 shost_printk(KERN_ERR, fnic->lport->host, 225 "WQ[%d] error_status" 226 " %d\n", i, error_status); 227 } 228 229 for (i = 0; i < fnic->rq_count; i++) { 230 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 231 if (error_status) 232 shost_printk(KERN_ERR, fnic->lport->host, 233 "RQ[%d] error_status" 234 " %d\n", i, error_status); 235 } 236 237 for (i = 0; i < fnic->wq_copy_count; i++) { 238 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); 239 if (error_status) 240 shost_printk(KERN_ERR, fnic->lport->host, 241 "CWQ[%d] error_status" 242 " %d\n", i, error_status); 243 } 244 } 245 246 void fnic_handle_link_event(struct fnic *fnic) 247 { 248 unsigned long flags; 249 250 spin_lock_irqsave(&fnic->fnic_lock, flags); 251 if (fnic->stop_rx_link_events) { 252 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 253 return; 254 } 255 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 256 257 queue_work(fnic_event_queue, &fnic->link_work); 258 259 } 260 261 static int fnic_notify_set(struct fnic *fnic) 262 { 263 int err; 264 265 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 266 case VNIC_DEV_INTR_MODE_INTX: 267 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 268 break; 269 case VNIC_DEV_INTR_MODE_MSI: 270 err = vnic_dev_notify_set(fnic->vdev, -1); 271 break; 272 case VNIC_DEV_INTR_MODE_MSIX: 273 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); 274 break; 275 default: 276 shost_printk(KERN_ERR, fnic->lport->host, 277 "Interrupt mode should be set up" 278 " before devcmd notify set %d\n", 279 vnic_dev_get_intr_mode(fnic->vdev)); 280 err = -1; 281 break; 282 } 283 284 return err; 285 } 286 287 static void fnic_notify_timer(unsigned long data) 288 { 289 struct fnic *fnic = (struct fnic *)data; 290 291 fnic_handle_link_event(fnic); 292 mod_timer(&fnic->notify_timer, 293 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 294 } 295 296 static void fnic_fip_notify_timer(unsigned long data) 297 { 298 struct fnic *fnic = (struct fnic *)data; 299 300 fnic_handle_fip_timer(fnic); 301 } 302 303 static void fnic_notify_timer_start(struct fnic *fnic) 304 { 305 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 306 case VNIC_DEV_INTR_MODE_MSI: 307 /* 308 * Schedule first timeout immediately. The driver is 309 * initiatialized and ready to look for link up notification 310 */ 311 mod_timer(&fnic->notify_timer, jiffies); 312 break; 313 default: 314 /* Using intr for notification for INTx/MSI-X */ 315 break; 316 }; 317 } 318 319 static int fnic_dev_wait(struct vnic_dev *vdev, 320 int (*start)(struct vnic_dev *, int), 321 int (*finished)(struct vnic_dev *, int *), 322 int arg) 323 { 324 unsigned long time; 325 int done; 326 int err; 327 328 err = start(vdev, arg); 329 if (err) 330 return err; 331 332 /* Wait for func to complete...2 seconds max */ 333 time = jiffies + (HZ * 2); 334 do { 335 err = finished(vdev, &done); 336 if (err) 337 return err; 338 if (done) 339 return 0; 340 schedule_timeout_uninterruptible(HZ / 10); 341 } while (time_after(time, jiffies)); 342 343 return -ETIMEDOUT; 344 } 345 346 static int fnic_cleanup(struct fnic *fnic) 347 { 348 unsigned int i; 349 int err; 350 351 vnic_dev_disable(fnic->vdev); 352 for (i = 0; i < fnic->intr_count; i++) 353 vnic_intr_mask(&fnic->intr[i]); 354 355 for (i = 0; i < fnic->rq_count; i++) { 356 err = vnic_rq_disable(&fnic->rq[i]); 357 if (err) 358 return err; 359 } 360 for (i = 0; i < fnic->raw_wq_count; i++) { 361 err = vnic_wq_disable(&fnic->wq[i]); 362 if (err) 363 return err; 364 } 365 for (i = 0; i < fnic->wq_copy_count; i++) { 366 err = vnic_wq_copy_disable(&fnic->wq_copy[i]); 367 if (err) 368 return err; 369 } 370 371 /* Clean up completed IOs and FCS frames */ 372 fnic_wq_copy_cmpl_handler(fnic, -1); 373 fnic_wq_cmpl_handler(fnic, -1); 374 fnic_rq_cmpl_handler(fnic, -1); 375 376 /* Clean up the IOs and FCS frames that have not completed */ 377 for (i = 0; i < fnic->raw_wq_count; i++) 378 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 379 for (i = 0; i < fnic->rq_count; i++) 380 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 381 for (i = 0; i < fnic->wq_copy_count; i++) 382 vnic_wq_copy_clean(&fnic->wq_copy[i], 383 fnic_wq_copy_cleanup_handler); 384 385 for (i = 0; i < fnic->cq_count; i++) 386 vnic_cq_clean(&fnic->cq[i]); 387 for (i = 0; i < fnic->intr_count; i++) 388 vnic_intr_clean(&fnic->intr[i]); 389 390 mempool_destroy(fnic->io_req_pool); 391 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 392 mempool_destroy(fnic->io_sgl_pool[i]); 393 394 return 0; 395 } 396 397 static void fnic_iounmap(struct fnic *fnic) 398 { 399 if (fnic->bar0.vaddr) 400 iounmap(fnic->bar0.vaddr); 401 } 402 403 /** 404 * fnic_get_mac() - get assigned data MAC address for FIP code. 405 * @lport: local port. 406 */ 407 static u8 *fnic_get_mac(struct fc_lport *lport) 408 { 409 struct fnic *fnic = lport_priv(lport); 410 411 return fnic->data_src_addr; 412 } 413 414 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id) 415 { 416 u16 old_vlan; 417 old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id); 418 } 419 420 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 421 { 422 struct Scsi_Host *host; 423 struct fc_lport *lp; 424 struct fnic *fnic; 425 mempool_t *pool; 426 int err; 427 int i; 428 unsigned long flags; 429 430 /* 431 * Allocate SCSI Host and set up association between host, 432 * local port, and fnic 433 */ 434 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic)); 435 if (!lp) { 436 printk(KERN_ERR PFX "Unable to alloc libfc local port\n"); 437 err = -ENOMEM; 438 goto err_out; 439 } 440 host = lp->host; 441 fnic = lport_priv(lp); 442 fnic->lport = lp; 443 fnic->ctlr.lp = lp; 444 445 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 446 host->host_no); 447 448 host->transportt = fnic_fc_transport; 449 450 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ); 451 if (err) { 452 shost_printk(KERN_ERR, fnic->lport->host, 453 "Unable to alloc shared tag map\n"); 454 goto err_out_free_hba; 455 } 456 457 /* Setup PCI resources */ 458 pci_set_drvdata(pdev, fnic); 459 460 fnic->pdev = pdev; 461 462 err = pci_enable_device(pdev); 463 if (err) { 464 shost_printk(KERN_ERR, fnic->lport->host, 465 "Cannot enable PCI device, aborting.\n"); 466 goto err_out_free_hba; 467 } 468 469 err = pci_request_regions(pdev, DRV_NAME); 470 if (err) { 471 shost_printk(KERN_ERR, fnic->lport->host, 472 "Cannot enable PCI resources, aborting\n"); 473 goto err_out_disable_device; 474 } 475 476 pci_set_master(pdev); 477 478 /* Query PCI controller on system for DMA addressing 479 * limitation for the device. Try 40-bit first, and 480 * fail to 32-bit. 481 */ 482 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 483 if (err) { 484 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 485 if (err) { 486 shost_printk(KERN_ERR, fnic->lport->host, 487 "No usable DMA configuration " 488 "aborting\n"); 489 goto err_out_release_regions; 490 } 491 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 492 if (err) { 493 shost_printk(KERN_ERR, fnic->lport->host, 494 "Unable to obtain 32-bit DMA " 495 "for consistent allocations, aborting.\n"); 496 goto err_out_release_regions; 497 } 498 } else { 499 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); 500 if (err) { 501 shost_printk(KERN_ERR, fnic->lport->host, 502 "Unable to obtain 40-bit DMA " 503 "for consistent allocations, aborting.\n"); 504 goto err_out_release_regions; 505 } 506 } 507 508 /* Map vNIC resources from BAR0 */ 509 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 510 shost_printk(KERN_ERR, fnic->lport->host, 511 "BAR0 not memory-map'able, aborting.\n"); 512 err = -ENODEV; 513 goto err_out_release_regions; 514 } 515 516 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 517 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 518 fnic->bar0.len = pci_resource_len(pdev, 0); 519 520 if (!fnic->bar0.vaddr) { 521 shost_printk(KERN_ERR, fnic->lport->host, 522 "Cannot memory-map BAR0 res hdr, " 523 "aborting.\n"); 524 err = -ENODEV; 525 goto err_out_release_regions; 526 } 527 528 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 529 if (!fnic->vdev) { 530 shost_printk(KERN_ERR, fnic->lport->host, 531 "vNIC registration failed, " 532 "aborting.\n"); 533 err = -ENODEV; 534 goto err_out_iounmap; 535 } 536 537 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 538 vnic_dev_open_done, 0); 539 if (err) { 540 shost_printk(KERN_ERR, fnic->lport->host, 541 "vNIC dev open failed, aborting.\n"); 542 goto err_out_vnic_unregister; 543 } 544 545 err = vnic_dev_init(fnic->vdev, 0); 546 if (err) { 547 shost_printk(KERN_ERR, fnic->lport->host, 548 "vNIC dev init failed, aborting.\n"); 549 goto err_out_dev_close; 550 } 551 552 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 553 if (err) { 554 shost_printk(KERN_ERR, fnic->lport->host, 555 "vNIC get MAC addr failed \n"); 556 goto err_out_dev_close; 557 } 558 /* set data_src for point-to-point mode and to keep it non-zero */ 559 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN); 560 561 /* Get vNIC configuration */ 562 err = fnic_get_vnic_config(fnic); 563 if (err) { 564 shost_printk(KERN_ERR, fnic->lport->host, 565 "Get vNIC configuration failed, " 566 "aborting.\n"); 567 goto err_out_dev_close; 568 } 569 host->max_lun = fnic->config.luns_per_tgt; 570 host->max_id = FNIC_MAX_FCP_TARGET; 571 host->max_cmd_len = FCOE_MAX_CMD_LEN; 572 573 fnic_get_res_counts(fnic); 574 575 err = fnic_set_intr_mode(fnic); 576 if (err) { 577 shost_printk(KERN_ERR, fnic->lport->host, 578 "Failed to set intr mode, " 579 "aborting.\n"); 580 goto err_out_dev_close; 581 } 582 583 err = fnic_alloc_vnic_resources(fnic); 584 if (err) { 585 shost_printk(KERN_ERR, fnic->lport->host, 586 "Failed to alloc vNIC resources, " 587 "aborting.\n"); 588 goto err_out_clear_intr; 589 } 590 591 592 /* initialize all fnic locks */ 593 spin_lock_init(&fnic->fnic_lock); 594 595 for (i = 0; i < FNIC_WQ_MAX; i++) 596 spin_lock_init(&fnic->wq_lock[i]); 597 598 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 599 spin_lock_init(&fnic->wq_copy_lock[i]); 600 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 601 fnic->fw_ack_recd[i] = 0; 602 fnic->fw_ack_index[i] = -1; 603 } 604 605 for (i = 0; i < FNIC_IO_LOCKS; i++) 606 spin_lock_init(&fnic->io_req_lock[i]); 607 608 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 609 if (!fnic->io_req_pool) 610 goto err_out_free_resources; 611 612 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 613 if (!pool) 614 goto err_out_free_ioreq_pool; 615 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 616 617 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 618 if (!pool) 619 goto err_out_free_dflt_pool; 620 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 621 622 /* setup vlan config, hw inserts vlan header */ 623 fnic->vlan_hw_insert = 1; 624 fnic->vlan_id = 0; 625 626 /* Initialize the FIP fcoe_ctrl struct */ 627 fnic->ctlr.send = fnic_eth_send; 628 fnic->ctlr.update_mac = fnic_update_mac; 629 fnic->ctlr.get_src_addr = fnic_get_mac; 630 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 631 shost_printk(KERN_INFO, fnic->lport->host, 632 "firmware supports FIP\n"); 633 /* enable directed and multicast */ 634 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); 635 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 636 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 637 fnic->set_vlan = fnic_set_vlan; 638 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); 639 setup_timer(&fnic->fip_timer, fnic_fip_notify_timer, 640 (unsigned long)fnic); 641 spin_lock_init(&fnic->vlans_lock); 642 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame); 643 INIT_WORK(&fnic->event_work, fnic_handle_event); 644 skb_queue_head_init(&fnic->fip_frame_queue); 645 spin_lock_irqsave(&fnic_list_lock, flags); 646 if (!fnic_fip_queue) { 647 fnic_fip_queue = 648 create_singlethread_workqueue("fnic_fip_q"); 649 if (!fnic_fip_queue) { 650 spin_unlock_irqrestore(&fnic_list_lock, flags); 651 printk(KERN_ERR PFX "fnic FIP work queue " 652 "create failed\n"); 653 err = -ENOMEM; 654 goto err_out_free_max_pool; 655 } 656 } 657 spin_unlock_irqrestore(&fnic_list_lock, flags); 658 INIT_LIST_HEAD(&fnic->evlist); 659 INIT_LIST_HEAD(&fnic->vlans); 660 } else { 661 shost_printk(KERN_INFO, fnic->lport->host, 662 "firmware uses non-FIP mode\n"); 663 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); 664 } 665 fnic->state = FNIC_IN_FC_MODE; 666 667 atomic_set(&fnic->in_flight, 0); 668 fnic->state_flags = FNIC_FLAGS_NONE; 669 670 /* Enable hardware stripping of vlan header on ingress */ 671 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 672 673 /* Setup notification buffer area */ 674 err = fnic_notify_set(fnic); 675 if (err) { 676 shost_printk(KERN_ERR, fnic->lport->host, 677 "Failed to alloc notify buffer, aborting.\n"); 678 goto err_out_free_max_pool; 679 } 680 681 /* Setup notify timer when using MSI interrupts */ 682 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 683 setup_timer(&fnic->notify_timer, 684 fnic_notify_timer, (unsigned long)fnic); 685 686 /* allocate RQ buffers and post them to RQ*/ 687 for (i = 0; i < fnic->rq_count; i++) { 688 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 689 if (err) { 690 shost_printk(KERN_ERR, fnic->lport->host, 691 "fnic_alloc_rq_frame can't alloc " 692 "frame\n"); 693 goto err_out_free_rq_buf; 694 } 695 } 696 697 /* 698 * Initialization done with PCI system, hardware, firmware. 699 * Add host to SCSI 700 */ 701 err = scsi_add_host(lp->host, &pdev->dev); 702 if (err) { 703 shost_printk(KERN_ERR, fnic->lport->host, 704 "fnic: scsi_add_host failed...exiting\n"); 705 goto err_out_free_rq_buf; 706 } 707 708 /* Start local port initiatialization */ 709 710 lp->link_up = 0; 711 712 lp->max_retry_count = fnic->config.flogi_retries; 713 lp->max_rport_retry_count = fnic->config.plogi_retries; 714 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 715 FCP_SPPF_CONF_COMPL); 716 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 717 lp->service_params |= FCP_SPPF_RETRY; 718 719 lp->boot_time = jiffies; 720 lp->e_d_tov = fnic->config.ed_tov; 721 lp->r_a_tov = fnic->config.ra_tov; 722 lp->link_supported_speeds = FC_PORTSPEED_10GBIT; 723 fc_set_wwnn(lp, fnic->config.node_wwn); 724 fc_set_wwpn(lp, fnic->config.port_wwn); 725 726 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); 727 728 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 729 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 730 err = -ENOMEM; 731 goto err_out_remove_scsi_host; 732 } 733 734 fc_lport_init_stats(lp); 735 736 fc_lport_config(lp); 737 738 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + 739 sizeof(struct fc_frame_header))) { 740 err = -EINVAL; 741 goto err_out_free_exch_mgr; 742 } 743 fc_host_maxframe_size(lp->host) = lp->mfs; 744 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000; 745 746 sprintf(fc_host_symbolic_name(lp->host), 747 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 748 749 spin_lock_irqsave(&fnic_list_lock, flags); 750 list_add_tail(&fnic->list, &fnic_list); 751 spin_unlock_irqrestore(&fnic_list_lock, flags); 752 753 INIT_WORK(&fnic->link_work, fnic_handle_link); 754 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 755 skb_queue_head_init(&fnic->frame_queue); 756 skb_queue_head_init(&fnic->tx_queue); 757 758 /* Enable all queues */ 759 for (i = 0; i < fnic->raw_wq_count; i++) 760 vnic_wq_enable(&fnic->wq[i]); 761 for (i = 0; i < fnic->rq_count; i++) 762 vnic_rq_enable(&fnic->rq[i]); 763 for (i = 0; i < fnic->wq_copy_count; i++) 764 vnic_wq_copy_enable(&fnic->wq_copy[i]); 765 766 fc_fabric_login(lp); 767 768 vnic_dev_enable(fnic->vdev); 769 770 err = fnic_request_intr(fnic); 771 if (err) { 772 shost_printk(KERN_ERR, fnic->lport->host, 773 "Unable to request irq.\n"); 774 goto err_out_free_exch_mgr; 775 } 776 777 for (i = 0; i < fnic->intr_count; i++) 778 vnic_intr_unmask(&fnic->intr[i]); 779 780 fnic_notify_timer_start(fnic); 781 782 return 0; 783 784 err_out_free_exch_mgr: 785 fc_exch_mgr_free(lp); 786 err_out_remove_scsi_host: 787 fc_remove_host(lp->host); 788 scsi_remove_host(lp->host); 789 err_out_free_rq_buf: 790 for (i = 0; i < fnic->rq_count; i++) 791 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 792 vnic_dev_notify_unset(fnic->vdev); 793 err_out_free_max_pool: 794 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 795 err_out_free_dflt_pool: 796 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 797 err_out_free_ioreq_pool: 798 mempool_destroy(fnic->io_req_pool); 799 err_out_free_resources: 800 fnic_free_vnic_resources(fnic); 801 err_out_clear_intr: 802 fnic_clear_intr_mode(fnic); 803 err_out_dev_close: 804 vnic_dev_close(fnic->vdev); 805 err_out_vnic_unregister: 806 vnic_dev_unregister(fnic->vdev); 807 err_out_iounmap: 808 fnic_iounmap(fnic); 809 err_out_release_regions: 810 pci_release_regions(pdev); 811 err_out_disable_device: 812 pci_disable_device(pdev); 813 err_out_free_hba: 814 scsi_host_put(lp->host); 815 err_out: 816 return err; 817 } 818 819 static void fnic_remove(struct pci_dev *pdev) 820 { 821 struct fnic *fnic = pci_get_drvdata(pdev); 822 struct fc_lport *lp = fnic->lport; 823 unsigned long flags; 824 825 /* 826 * Mark state so that the workqueue thread stops forwarding 827 * received frames and link events to the local port. ISR and 828 * other threads that can queue work items will also stop 829 * creating work items on the fnic workqueue 830 */ 831 spin_lock_irqsave(&fnic->fnic_lock, flags); 832 fnic->stop_rx_link_events = 1; 833 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 834 835 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 836 del_timer_sync(&fnic->notify_timer); 837 838 /* 839 * Flush the fnic event queue. After this call, there should 840 * be no event queued for this fnic device in the workqueue 841 */ 842 flush_workqueue(fnic_event_queue); 843 skb_queue_purge(&fnic->frame_queue); 844 skb_queue_purge(&fnic->tx_queue); 845 846 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 847 del_timer_sync(&fnic->fip_timer); 848 skb_queue_purge(&fnic->fip_frame_queue); 849 fnic_fcoe_reset_vlans(fnic); 850 fnic_fcoe_evlist_free(fnic); 851 } 852 853 /* 854 * Log off the fabric. This stops all remote ports, dns port, 855 * logs off the fabric. This flushes all rport, disc, lport work 856 * before returning 857 */ 858 fc_fabric_logoff(fnic->lport); 859 860 spin_lock_irqsave(&fnic->fnic_lock, flags); 861 fnic->in_remove = 1; 862 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 863 864 fcoe_ctlr_destroy(&fnic->ctlr); 865 fc_lport_destroy(lp); 866 867 /* 868 * This stops the fnic device, masks all interrupts. Completed 869 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 870 * cleaned up 871 */ 872 fnic_cleanup(fnic); 873 874 BUG_ON(!skb_queue_empty(&fnic->frame_queue)); 875 BUG_ON(!skb_queue_empty(&fnic->tx_queue)); 876 877 spin_lock_irqsave(&fnic_list_lock, flags); 878 list_del(&fnic->list); 879 spin_unlock_irqrestore(&fnic_list_lock, flags); 880 881 fc_remove_host(fnic->lport->host); 882 scsi_remove_host(fnic->lport->host); 883 fc_exch_mgr_free(fnic->lport); 884 vnic_dev_notify_unset(fnic->vdev); 885 fnic_free_intr(fnic); 886 fnic_free_vnic_resources(fnic); 887 fnic_clear_intr_mode(fnic); 888 vnic_dev_close(fnic->vdev); 889 vnic_dev_unregister(fnic->vdev); 890 fnic_iounmap(fnic); 891 pci_release_regions(pdev); 892 pci_disable_device(pdev); 893 pci_set_drvdata(pdev, NULL); 894 scsi_host_put(lp->host); 895 } 896 897 static struct pci_driver fnic_driver = { 898 .name = DRV_NAME, 899 .id_table = fnic_id_table, 900 .probe = fnic_probe, 901 .remove = fnic_remove, 902 }; 903 904 static int __init fnic_init_module(void) 905 { 906 size_t len; 907 int err = 0; 908 909 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 910 911 /* Allocate memory for trace buffer */ 912 err = fnic_trace_buf_init(); 913 if (err < 0) { 914 printk(KERN_ERR PFX "Trace buffer initialization Failed " 915 "Fnic Tracing utility is disabled\n"); 916 fnic_trace_free(); 917 } 918 919 /* Create a cache for allocation of default size sgls */ 920 len = sizeof(struct fnic_dflt_sgl_list); 921 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 922 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 923 SLAB_HWCACHE_ALIGN, 924 NULL); 925 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 926 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 927 err = -ENOMEM; 928 goto err_create_fnic_sgl_slab_dflt; 929 } 930 931 /* Create a cache for allocation of max size sgls*/ 932 len = sizeof(struct fnic_sgl_list); 933 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 934 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 935 SLAB_HWCACHE_ALIGN, 936 NULL); 937 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 938 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 939 err = -ENOMEM; 940 goto err_create_fnic_sgl_slab_max; 941 } 942 943 /* Create a cache of io_req structs for use via mempool */ 944 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 945 sizeof(struct fnic_io_req), 946 0, SLAB_HWCACHE_ALIGN, NULL); 947 if (!fnic_io_req_cache) { 948 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 949 err = -ENOMEM; 950 goto err_create_fnic_ioreq_slab; 951 } 952 953 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); 954 if (!fnic_event_queue) { 955 printk(KERN_ERR PFX "fnic work queue create failed\n"); 956 err = -ENOMEM; 957 goto err_create_fnic_workq; 958 } 959 960 spin_lock_init(&fnic_list_lock); 961 INIT_LIST_HEAD(&fnic_list); 962 963 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 964 if (!fnic_fc_transport) { 965 printk(KERN_ERR PFX "fc_attach_transport error\n"); 966 err = -ENOMEM; 967 goto err_fc_transport; 968 } 969 970 /* register the driver with PCI system */ 971 err = pci_register_driver(&fnic_driver); 972 if (err < 0) { 973 printk(KERN_ERR PFX "pci register error\n"); 974 goto err_pci_register; 975 } 976 return err; 977 978 err_pci_register: 979 fc_release_transport(fnic_fc_transport); 980 err_fc_transport: 981 destroy_workqueue(fnic_event_queue); 982 err_create_fnic_workq: 983 kmem_cache_destroy(fnic_io_req_cache); 984 err_create_fnic_ioreq_slab: 985 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 986 err_create_fnic_sgl_slab_max: 987 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 988 err_create_fnic_sgl_slab_dflt: 989 fnic_trace_free(); 990 return err; 991 } 992 993 static void __exit fnic_cleanup_module(void) 994 { 995 pci_unregister_driver(&fnic_driver); 996 destroy_workqueue(fnic_event_queue); 997 if (fnic_fip_queue) { 998 flush_workqueue(fnic_fip_queue); 999 destroy_workqueue(fnic_fip_queue); 1000 } 1001 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 1002 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 1003 kmem_cache_destroy(fnic_io_req_cache); 1004 fc_release_transport(fnic_fc_transport); 1005 fnic_trace_free(); 1006 } 1007 1008 module_init(fnic_init_module); 1009 module_exit(fnic_cleanup_module); 1010 1011