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.h" 43 44 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045 45 46 /* Timer to poll notification area for events. Used for MSI interrupts */ 47 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ) 48 49 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; 50 static struct kmem_cache *fnic_io_req_cache; 51 LIST_HEAD(fnic_list); 52 DEFINE_SPINLOCK(fnic_list_lock); 53 54 /* Supported devices by fnic module */ 55 static struct pci_device_id fnic_id_table[] = { 56 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, 57 { 0, } 58 }; 59 60 MODULE_DESCRIPTION(DRV_DESCRIPTION); 61 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " 62 "Joseph R. Eykholt <jeykholt@cisco.com>"); 63 MODULE_LICENSE("GPL v2"); 64 MODULE_VERSION(DRV_VERSION); 65 MODULE_DEVICE_TABLE(pci, fnic_id_table); 66 67 unsigned int fnic_log_level; 68 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); 69 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); 70 71 72 static struct libfc_function_template fnic_transport_template = { 73 .frame_send = fnic_send, 74 .lport_set_port_id = fnic_set_port_id, 75 .fcp_abort_io = fnic_empty_scsi_cleanup, 76 .fcp_cleanup = fnic_empty_scsi_cleanup, 77 .exch_mgr_reset = fnic_exch_mgr_reset 78 }; 79 80 static int fnic_slave_alloc(struct scsi_device *sdev) 81 { 82 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 83 84 sdev->tagged_supported = 1; 85 86 if (!rport || fc_remote_port_chkready(rport)) 87 return -ENXIO; 88 89 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); 90 return 0; 91 } 92 93 static struct scsi_host_template fnic_host_template = { 94 .module = THIS_MODULE, 95 .name = DRV_NAME, 96 .queuecommand = fnic_queuecommand, 97 .eh_abort_handler = fnic_abort_cmd, 98 .eh_device_reset_handler = fnic_device_reset, 99 .eh_host_reset_handler = fnic_host_reset, 100 .slave_alloc = fnic_slave_alloc, 101 .change_queue_depth = fc_change_queue_depth, 102 .change_queue_type = fc_change_queue_type, 103 .this_id = -1, 104 .cmd_per_lun = 3, 105 .can_queue = FNIC_MAX_IO_REQ, 106 .use_clustering = ENABLE_CLUSTERING, 107 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 108 .max_sectors = 0xffff, 109 .shost_attrs = fnic_attrs, 110 }; 111 112 static void 113 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 114 { 115 if (timeout) 116 rport->dev_loss_tmo = timeout; 117 else 118 rport->dev_loss_tmo = 1; 119 } 120 121 static void fnic_get_host_speed(struct Scsi_Host *shost); 122 static struct scsi_transport_template *fnic_fc_transport; 123 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 124 125 static struct fc_function_template fnic_fc_functions = { 126 127 .show_host_node_name = 1, 128 .show_host_port_name = 1, 129 .show_host_supported_classes = 1, 130 .show_host_supported_fc4s = 1, 131 .show_host_active_fc4s = 1, 132 .show_host_maxframe_size = 1, 133 .show_host_port_id = 1, 134 .show_host_supported_speeds = 1, 135 .get_host_speed = fnic_get_host_speed, 136 .show_host_speed = 1, 137 .show_host_port_type = 1, 138 .get_host_port_state = fc_get_host_port_state, 139 .show_host_port_state = 1, 140 .show_host_symbolic_name = 1, 141 .show_rport_maxframe_size = 1, 142 .show_rport_supported_classes = 1, 143 .show_host_fabric_name = 1, 144 .show_starget_node_name = 1, 145 .show_starget_port_name = 1, 146 .show_starget_port_id = 1, 147 .show_rport_dev_loss_tmo = 1, 148 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo, 149 .issue_fc_host_lip = fnic_reset, 150 .get_fc_host_stats = fnic_get_stats, 151 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), 152 .terminate_rport_io = fnic_terminate_rport_io, 153 .bsg_request = fc_lport_bsg_request, 154 }; 155 156 static void fnic_get_host_speed(struct Scsi_Host *shost) 157 { 158 struct fc_lport *lp = shost_priv(shost); 159 struct fnic *fnic = lport_priv(lp); 160 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 161 162 /* Add in other values as they get defined in fw */ 163 switch (port_speed) { 164 case 10000: 165 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 166 break; 167 default: 168 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 169 break; 170 } 171 } 172 173 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 174 { 175 int ret; 176 struct fc_lport *lp = shost_priv(host); 177 struct fnic *fnic = lport_priv(lp); 178 struct fc_host_statistics *stats = &lp->host_stats; 179 struct vnic_stats *vs; 180 unsigned long flags; 181 182 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 183 return stats; 184 fnic->stats_time = jiffies; 185 186 spin_lock_irqsave(&fnic->fnic_lock, flags); 187 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 188 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 189 190 if (ret) { 191 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 192 "fnic: Get vnic stats failed" 193 " 0x%x", ret); 194 return stats; 195 } 196 vs = fnic->stats; 197 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 198 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 199 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 200 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 201 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 202 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 203 stats->invalid_crc_count = vs->rx.rx_crc_errors; 204 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ; 205 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 206 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 207 208 return stats; 209 } 210 211 void fnic_log_q_error(struct fnic *fnic) 212 { 213 unsigned int i; 214 u32 error_status; 215 216 for (i = 0; i < fnic->raw_wq_count; i++) { 217 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 218 if (error_status) 219 shost_printk(KERN_ERR, fnic->lport->host, 220 "WQ[%d] error_status" 221 " %d\n", i, error_status); 222 } 223 224 for (i = 0; i < fnic->rq_count; i++) { 225 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 226 if (error_status) 227 shost_printk(KERN_ERR, fnic->lport->host, 228 "RQ[%d] error_status" 229 " %d\n", i, error_status); 230 } 231 232 for (i = 0; i < fnic->wq_copy_count; i++) { 233 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); 234 if (error_status) 235 shost_printk(KERN_ERR, fnic->lport->host, 236 "CWQ[%d] error_status" 237 " %d\n", i, error_status); 238 } 239 } 240 241 void fnic_handle_link_event(struct fnic *fnic) 242 { 243 unsigned long flags; 244 245 spin_lock_irqsave(&fnic->fnic_lock, flags); 246 if (fnic->stop_rx_link_events) { 247 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 248 return; 249 } 250 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 251 252 queue_work(fnic_event_queue, &fnic->link_work); 253 254 } 255 256 static int fnic_notify_set(struct fnic *fnic) 257 { 258 int err; 259 260 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 261 case VNIC_DEV_INTR_MODE_INTX: 262 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 263 break; 264 case VNIC_DEV_INTR_MODE_MSI: 265 err = vnic_dev_notify_set(fnic->vdev, -1); 266 break; 267 case VNIC_DEV_INTR_MODE_MSIX: 268 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); 269 break; 270 default: 271 shost_printk(KERN_ERR, fnic->lport->host, 272 "Interrupt mode should be set up" 273 " before devcmd notify set %d\n", 274 vnic_dev_get_intr_mode(fnic->vdev)); 275 err = -1; 276 break; 277 } 278 279 return err; 280 } 281 282 static void fnic_notify_timer(unsigned long data) 283 { 284 struct fnic *fnic = (struct fnic *)data; 285 286 fnic_handle_link_event(fnic); 287 mod_timer(&fnic->notify_timer, 288 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 289 } 290 291 static void fnic_notify_timer_start(struct fnic *fnic) 292 { 293 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 294 case VNIC_DEV_INTR_MODE_MSI: 295 /* 296 * Schedule first timeout immediately. The driver is 297 * initiatialized and ready to look for link up notification 298 */ 299 mod_timer(&fnic->notify_timer, jiffies); 300 break; 301 default: 302 /* Using intr for notification for INTx/MSI-X */ 303 break; 304 }; 305 } 306 307 static int fnic_dev_wait(struct vnic_dev *vdev, 308 int (*start)(struct vnic_dev *, int), 309 int (*finished)(struct vnic_dev *, int *), 310 int arg) 311 { 312 unsigned long time; 313 int done; 314 int err; 315 316 err = start(vdev, arg); 317 if (err) 318 return err; 319 320 /* Wait for func to complete...2 seconds max */ 321 time = jiffies + (HZ * 2); 322 do { 323 err = finished(vdev, &done); 324 if (err) 325 return err; 326 if (done) 327 return 0; 328 schedule_timeout_uninterruptible(HZ / 10); 329 } while (time_after(time, jiffies)); 330 331 return -ETIMEDOUT; 332 } 333 334 static int fnic_cleanup(struct fnic *fnic) 335 { 336 unsigned int i; 337 int err; 338 339 vnic_dev_disable(fnic->vdev); 340 for (i = 0; i < fnic->intr_count; i++) 341 vnic_intr_mask(&fnic->intr[i]); 342 343 for (i = 0; i < fnic->rq_count; i++) { 344 err = vnic_rq_disable(&fnic->rq[i]); 345 if (err) 346 return err; 347 } 348 for (i = 0; i < fnic->raw_wq_count; i++) { 349 err = vnic_wq_disable(&fnic->wq[i]); 350 if (err) 351 return err; 352 } 353 for (i = 0; i < fnic->wq_copy_count; i++) { 354 err = vnic_wq_copy_disable(&fnic->wq_copy[i]); 355 if (err) 356 return err; 357 } 358 359 /* Clean up completed IOs and FCS frames */ 360 fnic_wq_copy_cmpl_handler(fnic, -1); 361 fnic_wq_cmpl_handler(fnic, -1); 362 fnic_rq_cmpl_handler(fnic, -1); 363 364 /* Clean up the IOs and FCS frames that have not completed */ 365 for (i = 0; i < fnic->raw_wq_count; i++) 366 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 367 for (i = 0; i < fnic->rq_count; i++) 368 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 369 for (i = 0; i < fnic->wq_copy_count; i++) 370 vnic_wq_copy_clean(&fnic->wq_copy[i], 371 fnic_wq_copy_cleanup_handler); 372 373 for (i = 0; i < fnic->cq_count; i++) 374 vnic_cq_clean(&fnic->cq[i]); 375 for (i = 0; i < fnic->intr_count; i++) 376 vnic_intr_clean(&fnic->intr[i]); 377 378 mempool_destroy(fnic->io_req_pool); 379 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 380 mempool_destroy(fnic->io_sgl_pool[i]); 381 382 return 0; 383 } 384 385 static void fnic_iounmap(struct fnic *fnic) 386 { 387 if (fnic->bar0.vaddr) 388 iounmap(fnic->bar0.vaddr); 389 } 390 391 /** 392 * fnic_get_mac() - get assigned data MAC address for FIP code. 393 * @lport: local port. 394 */ 395 static u8 *fnic_get_mac(struct fc_lport *lport) 396 { 397 struct fnic *fnic = lport_priv(lport); 398 399 return fnic->data_src_addr; 400 } 401 402 static int __devinit fnic_probe(struct pci_dev *pdev, 403 const struct pci_device_id *ent) 404 { 405 struct Scsi_Host *host; 406 struct fc_lport *lp; 407 struct fnic *fnic; 408 mempool_t *pool; 409 int err; 410 int i; 411 unsigned long flags; 412 413 /* 414 * Allocate SCSI Host and set up association between host, 415 * local port, and fnic 416 */ 417 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic)); 418 if (!lp) { 419 printk(KERN_ERR PFX "Unable to alloc libfc local port\n"); 420 err = -ENOMEM; 421 goto err_out; 422 } 423 host = lp->host; 424 fnic = lport_priv(lp); 425 fnic->lport = lp; 426 fnic->ctlr.lp = lp; 427 428 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 429 host->host_no); 430 431 host->transportt = fnic_fc_transport; 432 433 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ); 434 if (err) { 435 shost_printk(KERN_ERR, fnic->lport->host, 436 "Unable to alloc shared tag map\n"); 437 goto err_out_free_hba; 438 } 439 440 /* Setup PCI resources */ 441 pci_set_drvdata(pdev, fnic); 442 443 fnic->pdev = pdev; 444 445 err = pci_enable_device(pdev); 446 if (err) { 447 shost_printk(KERN_ERR, fnic->lport->host, 448 "Cannot enable PCI device, aborting.\n"); 449 goto err_out_free_hba; 450 } 451 452 err = pci_request_regions(pdev, DRV_NAME); 453 if (err) { 454 shost_printk(KERN_ERR, fnic->lport->host, 455 "Cannot enable PCI resources, aborting\n"); 456 goto err_out_disable_device; 457 } 458 459 pci_set_master(pdev); 460 461 /* Query PCI controller on system for DMA addressing 462 * limitation for the device. Try 40-bit first, and 463 * fail to 32-bit. 464 */ 465 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 466 if (err) { 467 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 468 if (err) { 469 shost_printk(KERN_ERR, fnic->lport->host, 470 "No usable DMA configuration " 471 "aborting\n"); 472 goto err_out_release_regions; 473 } 474 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 475 if (err) { 476 shost_printk(KERN_ERR, fnic->lport->host, 477 "Unable to obtain 32-bit DMA " 478 "for consistent allocations, aborting.\n"); 479 goto err_out_release_regions; 480 } 481 } else { 482 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); 483 if (err) { 484 shost_printk(KERN_ERR, fnic->lport->host, 485 "Unable to obtain 40-bit DMA " 486 "for consistent allocations, aborting.\n"); 487 goto err_out_release_regions; 488 } 489 } 490 491 /* Map vNIC resources from BAR0 */ 492 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 493 shost_printk(KERN_ERR, fnic->lport->host, 494 "BAR0 not memory-map'able, aborting.\n"); 495 err = -ENODEV; 496 goto err_out_release_regions; 497 } 498 499 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 500 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 501 fnic->bar0.len = pci_resource_len(pdev, 0); 502 503 if (!fnic->bar0.vaddr) { 504 shost_printk(KERN_ERR, fnic->lport->host, 505 "Cannot memory-map BAR0 res hdr, " 506 "aborting.\n"); 507 err = -ENODEV; 508 goto err_out_release_regions; 509 } 510 511 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 512 if (!fnic->vdev) { 513 shost_printk(KERN_ERR, fnic->lport->host, 514 "vNIC registration failed, " 515 "aborting.\n"); 516 err = -ENODEV; 517 goto err_out_iounmap; 518 } 519 520 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 521 vnic_dev_open_done, 0); 522 if (err) { 523 shost_printk(KERN_ERR, fnic->lport->host, 524 "vNIC dev open failed, aborting.\n"); 525 goto err_out_vnic_unregister; 526 } 527 528 err = vnic_dev_init(fnic->vdev, 0); 529 if (err) { 530 shost_printk(KERN_ERR, fnic->lport->host, 531 "vNIC dev init failed, aborting.\n"); 532 goto err_out_dev_close; 533 } 534 535 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 536 if (err) { 537 shost_printk(KERN_ERR, fnic->lport->host, 538 "vNIC get MAC addr failed \n"); 539 goto err_out_dev_close; 540 } 541 /* set data_src for point-to-point mode and to keep it non-zero */ 542 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN); 543 544 /* Get vNIC configuration */ 545 err = fnic_get_vnic_config(fnic); 546 if (err) { 547 shost_printk(KERN_ERR, fnic->lport->host, 548 "Get vNIC configuration failed, " 549 "aborting.\n"); 550 goto err_out_dev_close; 551 } 552 host->max_lun = fnic->config.luns_per_tgt; 553 host->max_id = FNIC_MAX_FCP_TARGET; 554 host->max_cmd_len = FCOE_MAX_CMD_LEN; 555 556 fnic_get_res_counts(fnic); 557 558 err = fnic_set_intr_mode(fnic); 559 if (err) { 560 shost_printk(KERN_ERR, fnic->lport->host, 561 "Failed to set intr mode, " 562 "aborting.\n"); 563 goto err_out_dev_close; 564 } 565 566 err = fnic_alloc_vnic_resources(fnic); 567 if (err) { 568 shost_printk(KERN_ERR, fnic->lport->host, 569 "Failed to alloc vNIC resources, " 570 "aborting.\n"); 571 goto err_out_clear_intr; 572 } 573 574 575 /* initialize all fnic locks */ 576 spin_lock_init(&fnic->fnic_lock); 577 578 for (i = 0; i < FNIC_WQ_MAX; i++) 579 spin_lock_init(&fnic->wq_lock[i]); 580 581 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 582 spin_lock_init(&fnic->wq_copy_lock[i]); 583 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 584 fnic->fw_ack_recd[i] = 0; 585 fnic->fw_ack_index[i] = -1; 586 } 587 588 for (i = 0; i < FNIC_IO_LOCKS; i++) 589 spin_lock_init(&fnic->io_req_lock[i]); 590 591 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 592 if (!fnic->io_req_pool) 593 goto err_out_free_resources; 594 595 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 596 if (!pool) 597 goto err_out_free_ioreq_pool; 598 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 599 600 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 601 if (!pool) 602 goto err_out_free_dflt_pool; 603 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 604 605 /* setup vlan config, hw inserts vlan header */ 606 fnic->vlan_hw_insert = 1; 607 fnic->vlan_id = 0; 608 609 /* Initialize the FIP fcoe_ctrl struct */ 610 fnic->ctlr.send = fnic_eth_send; 611 fnic->ctlr.update_mac = fnic_update_mac; 612 fnic->ctlr.get_src_addr = fnic_get_mac; 613 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 614 shost_printk(KERN_INFO, fnic->lport->host, 615 "firmware supports FIP\n"); 616 /* enable directed and multicast */ 617 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); 618 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 619 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 620 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); 621 } else { 622 shost_printk(KERN_INFO, fnic->lport->host, 623 "firmware uses non-FIP mode\n"); 624 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); 625 } 626 fnic->state = FNIC_IN_FC_MODE; 627 628 /* Enable hardware stripping of vlan header on ingress */ 629 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 630 631 /* Setup notification buffer area */ 632 err = fnic_notify_set(fnic); 633 if (err) { 634 shost_printk(KERN_ERR, fnic->lport->host, 635 "Failed to alloc notify buffer, aborting.\n"); 636 goto err_out_free_max_pool; 637 } 638 639 /* Setup notify timer when using MSI interrupts */ 640 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 641 setup_timer(&fnic->notify_timer, 642 fnic_notify_timer, (unsigned long)fnic); 643 644 /* allocate RQ buffers and post them to RQ*/ 645 for (i = 0; i < fnic->rq_count; i++) { 646 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 647 if (err) { 648 shost_printk(KERN_ERR, fnic->lport->host, 649 "fnic_alloc_rq_frame can't alloc " 650 "frame\n"); 651 goto err_out_free_rq_buf; 652 } 653 } 654 655 /* 656 * Initialization done with PCI system, hardware, firmware. 657 * Add host to SCSI 658 */ 659 err = scsi_add_host(lp->host, &pdev->dev); 660 if (err) { 661 shost_printk(KERN_ERR, fnic->lport->host, 662 "fnic: scsi_add_host failed...exiting\n"); 663 goto err_out_free_rq_buf; 664 } 665 666 /* Start local port initiatialization */ 667 668 lp->link_up = 0; 669 670 lp->max_retry_count = fnic->config.flogi_retries; 671 lp->max_rport_retry_count = fnic->config.plogi_retries; 672 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 673 FCP_SPPF_CONF_COMPL); 674 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 675 lp->service_params |= FCP_SPPF_RETRY; 676 677 lp->boot_time = jiffies; 678 lp->e_d_tov = fnic->config.ed_tov; 679 lp->r_a_tov = fnic->config.ra_tov; 680 lp->link_supported_speeds = FC_PORTSPEED_10GBIT; 681 fc_set_wwnn(lp, fnic->config.node_wwn); 682 fc_set_wwpn(lp, fnic->config.port_wwn); 683 684 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); 685 686 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 687 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 688 err = -ENOMEM; 689 goto err_out_remove_scsi_host; 690 } 691 692 fc_lport_init_stats(lp); 693 694 fc_lport_config(lp); 695 696 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + 697 sizeof(struct fc_frame_header))) { 698 err = -EINVAL; 699 goto err_out_free_exch_mgr; 700 } 701 fc_host_maxframe_size(lp->host) = lp->mfs; 702 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000; 703 704 sprintf(fc_host_symbolic_name(lp->host), 705 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 706 707 spin_lock_irqsave(&fnic_list_lock, flags); 708 list_add_tail(&fnic->list, &fnic_list); 709 spin_unlock_irqrestore(&fnic_list_lock, flags); 710 711 INIT_WORK(&fnic->link_work, fnic_handle_link); 712 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 713 skb_queue_head_init(&fnic->frame_queue); 714 skb_queue_head_init(&fnic->tx_queue); 715 716 /* Enable all queues */ 717 for (i = 0; i < fnic->raw_wq_count; i++) 718 vnic_wq_enable(&fnic->wq[i]); 719 for (i = 0; i < fnic->rq_count; i++) 720 vnic_rq_enable(&fnic->rq[i]); 721 for (i = 0; i < fnic->wq_copy_count; i++) 722 vnic_wq_copy_enable(&fnic->wq_copy[i]); 723 724 fc_fabric_login(lp); 725 726 vnic_dev_enable(fnic->vdev); 727 728 err = fnic_request_intr(fnic); 729 if (err) { 730 shost_printk(KERN_ERR, fnic->lport->host, 731 "Unable to request irq.\n"); 732 goto err_out_free_exch_mgr; 733 } 734 735 for (i = 0; i < fnic->intr_count; i++) 736 vnic_intr_unmask(&fnic->intr[i]); 737 738 fnic_notify_timer_start(fnic); 739 740 return 0; 741 742 err_out_free_exch_mgr: 743 fc_exch_mgr_free(lp); 744 err_out_remove_scsi_host: 745 fc_remove_host(lp->host); 746 scsi_remove_host(lp->host); 747 err_out_free_rq_buf: 748 for (i = 0; i < fnic->rq_count; i++) 749 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 750 vnic_dev_notify_unset(fnic->vdev); 751 err_out_free_max_pool: 752 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 753 err_out_free_dflt_pool: 754 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 755 err_out_free_ioreq_pool: 756 mempool_destroy(fnic->io_req_pool); 757 err_out_free_resources: 758 fnic_free_vnic_resources(fnic); 759 err_out_clear_intr: 760 fnic_clear_intr_mode(fnic); 761 err_out_dev_close: 762 vnic_dev_close(fnic->vdev); 763 err_out_vnic_unregister: 764 vnic_dev_unregister(fnic->vdev); 765 err_out_iounmap: 766 fnic_iounmap(fnic); 767 err_out_release_regions: 768 pci_release_regions(pdev); 769 err_out_disable_device: 770 pci_disable_device(pdev); 771 err_out_free_hba: 772 scsi_host_put(lp->host); 773 err_out: 774 return err; 775 } 776 777 static void __devexit fnic_remove(struct pci_dev *pdev) 778 { 779 struct fnic *fnic = pci_get_drvdata(pdev); 780 struct fc_lport *lp = fnic->lport; 781 unsigned long flags; 782 783 /* 784 * Mark state so that the workqueue thread stops forwarding 785 * received frames and link events to the local port. ISR and 786 * other threads that can queue work items will also stop 787 * creating work items on the fnic workqueue 788 */ 789 spin_lock_irqsave(&fnic->fnic_lock, flags); 790 fnic->stop_rx_link_events = 1; 791 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 792 793 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 794 del_timer_sync(&fnic->notify_timer); 795 796 /* 797 * Flush the fnic event queue. After this call, there should 798 * be no event queued for this fnic device in the workqueue 799 */ 800 flush_workqueue(fnic_event_queue); 801 skb_queue_purge(&fnic->frame_queue); 802 skb_queue_purge(&fnic->tx_queue); 803 804 /* 805 * Log off the fabric. This stops all remote ports, dns port, 806 * logs off the fabric. This flushes all rport, disc, lport work 807 * before returning 808 */ 809 fc_fabric_logoff(fnic->lport); 810 811 spin_lock_irqsave(&fnic->fnic_lock, flags); 812 fnic->in_remove = 1; 813 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 814 815 fcoe_ctlr_destroy(&fnic->ctlr); 816 fc_lport_destroy(lp); 817 818 /* 819 * This stops the fnic device, masks all interrupts. Completed 820 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 821 * cleaned up 822 */ 823 fnic_cleanup(fnic); 824 825 BUG_ON(!skb_queue_empty(&fnic->frame_queue)); 826 BUG_ON(!skb_queue_empty(&fnic->tx_queue)); 827 828 spin_lock_irqsave(&fnic_list_lock, flags); 829 list_del(&fnic->list); 830 spin_unlock_irqrestore(&fnic_list_lock, flags); 831 832 fc_remove_host(fnic->lport->host); 833 scsi_remove_host(fnic->lport->host); 834 fc_exch_mgr_free(fnic->lport); 835 vnic_dev_notify_unset(fnic->vdev); 836 fnic_free_intr(fnic); 837 fnic_free_vnic_resources(fnic); 838 fnic_clear_intr_mode(fnic); 839 vnic_dev_close(fnic->vdev); 840 vnic_dev_unregister(fnic->vdev); 841 fnic_iounmap(fnic); 842 pci_release_regions(pdev); 843 pci_disable_device(pdev); 844 pci_set_drvdata(pdev, NULL); 845 scsi_host_put(lp->host); 846 } 847 848 static struct pci_driver fnic_driver = { 849 .name = DRV_NAME, 850 .id_table = fnic_id_table, 851 .probe = fnic_probe, 852 .remove = __devexit_p(fnic_remove), 853 }; 854 855 static int __init fnic_init_module(void) 856 { 857 size_t len; 858 int err = 0; 859 860 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 861 862 /* Create a cache for allocation of default size sgls */ 863 len = sizeof(struct fnic_dflt_sgl_list); 864 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 865 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 866 SLAB_HWCACHE_ALIGN, 867 NULL); 868 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 869 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 870 err = -ENOMEM; 871 goto err_create_fnic_sgl_slab_dflt; 872 } 873 874 /* Create a cache for allocation of max size sgls*/ 875 len = sizeof(struct fnic_sgl_list); 876 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 877 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 878 SLAB_HWCACHE_ALIGN, 879 NULL); 880 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 881 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 882 err = -ENOMEM; 883 goto err_create_fnic_sgl_slab_max; 884 } 885 886 /* Create a cache of io_req structs for use via mempool */ 887 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 888 sizeof(struct fnic_io_req), 889 0, SLAB_HWCACHE_ALIGN, NULL); 890 if (!fnic_io_req_cache) { 891 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 892 err = -ENOMEM; 893 goto err_create_fnic_ioreq_slab; 894 } 895 896 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); 897 if (!fnic_event_queue) { 898 printk(KERN_ERR PFX "fnic work queue create failed\n"); 899 err = -ENOMEM; 900 goto err_create_fnic_workq; 901 } 902 903 spin_lock_init(&fnic_list_lock); 904 INIT_LIST_HEAD(&fnic_list); 905 906 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 907 if (!fnic_fc_transport) { 908 printk(KERN_ERR PFX "fc_attach_transport error\n"); 909 err = -ENOMEM; 910 goto err_fc_transport; 911 } 912 913 /* register the driver with PCI system */ 914 err = pci_register_driver(&fnic_driver); 915 if (err < 0) { 916 printk(KERN_ERR PFX "pci register error\n"); 917 goto err_pci_register; 918 } 919 return err; 920 921 err_pci_register: 922 fc_release_transport(fnic_fc_transport); 923 err_fc_transport: 924 destroy_workqueue(fnic_event_queue); 925 err_create_fnic_workq: 926 kmem_cache_destroy(fnic_io_req_cache); 927 err_create_fnic_ioreq_slab: 928 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 929 err_create_fnic_sgl_slab_max: 930 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 931 err_create_fnic_sgl_slab_dflt: 932 return err; 933 } 934 935 static void __exit fnic_cleanup_module(void) 936 { 937 pci_unregister_driver(&fnic_driver); 938 destroy_workqueue(fnic_event_queue); 939 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 940 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 941 kmem_cache_destroy(fnic_io_req_cache); 942 fc_release_transport(fnic_fc_transport); 943 } 944 945 module_init(fnic_init_module); 946 module_exit(fnic_cleanup_module); 947 948