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/errno.h> 22 #include <linux/init.h> 23 #include <linux/pci.h> 24 #include <linux/skbuff.h> 25 #include <linux/interrupt.h> 26 #include <linux/spinlock.h> 27 #include <linux/workqueue.h> 28 #include <linux/if_ether.h> 29 #include <scsi/fc/fc_fip.h> 30 #include <scsi/scsi_host.h> 31 #include <scsi/scsi_transport.h> 32 #include <scsi/scsi_transport_fc.h> 33 #include <scsi/scsi_tcq.h> 34 #include <scsi/libfc.h> 35 #include <scsi/fc_frame.h> 36 37 #include "vnic_dev.h" 38 #include "vnic_intr.h" 39 #include "vnic_stats.h" 40 #include "fnic_io.h" 41 #include "fnic.h" 42 43 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045 44 45 /* Timer to poll notification area for events. Used for MSI interrupts */ 46 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ) 47 48 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; 49 static struct kmem_cache *fnic_io_req_cache; 50 LIST_HEAD(fnic_list); 51 DEFINE_SPINLOCK(fnic_list_lock); 52 53 /* Supported devices by fnic module */ 54 static struct pci_device_id fnic_id_table[] = { 55 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, 56 { 0, } 57 }; 58 59 MODULE_DESCRIPTION(DRV_DESCRIPTION); 60 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " 61 "Joseph R. Eykholt <jeykholt@cisco.com>"); 62 MODULE_LICENSE("GPL v2"); 63 MODULE_VERSION(DRV_VERSION); 64 MODULE_DEVICE_TABLE(pci, fnic_id_table); 65 66 unsigned int fnic_log_level; 67 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); 68 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); 69 70 71 static struct libfc_function_template fnic_transport_template = { 72 .frame_send = fnic_send, 73 .lport_set_port_id = fnic_set_port_id, 74 .fcp_abort_io = fnic_empty_scsi_cleanup, 75 .fcp_cleanup = fnic_empty_scsi_cleanup, 76 .exch_mgr_reset = fnic_exch_mgr_reset 77 }; 78 79 static int fnic_slave_alloc(struct scsi_device *sdev) 80 { 81 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 82 struct fc_lport *lp = shost_priv(sdev->host); 83 struct fnic *fnic = lport_priv(lp); 84 85 sdev->tagged_supported = 1; 86 87 if (!rport || fc_remote_port_chkready(rport)) 88 return -ENXIO; 89 90 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); 91 rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000; 92 93 return 0; 94 } 95 96 static struct scsi_host_template fnic_host_template = { 97 .module = THIS_MODULE, 98 .name = DRV_NAME, 99 .queuecommand = fnic_queuecommand, 100 .eh_abort_handler = fnic_abort_cmd, 101 .eh_device_reset_handler = fnic_device_reset, 102 .eh_host_reset_handler = fnic_host_reset, 103 .slave_alloc = fnic_slave_alloc, 104 .change_queue_depth = fc_change_queue_depth, 105 .change_queue_type = fc_change_queue_type, 106 .this_id = -1, 107 .cmd_per_lun = 3, 108 .can_queue = FNIC_MAX_IO_REQ, 109 .use_clustering = ENABLE_CLUSTERING, 110 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 111 .max_sectors = 0xffff, 112 .shost_attrs = fnic_attrs, 113 }; 114 115 static void fnic_get_host_speed(struct Scsi_Host *shost); 116 static struct scsi_transport_template *fnic_fc_transport; 117 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 118 119 static struct fc_function_template fnic_fc_functions = { 120 121 .show_host_node_name = 1, 122 .show_host_port_name = 1, 123 .show_host_supported_classes = 1, 124 .show_host_supported_fc4s = 1, 125 .show_host_active_fc4s = 1, 126 .show_host_maxframe_size = 1, 127 .show_host_port_id = 1, 128 .show_host_supported_speeds = 1, 129 .get_host_speed = fnic_get_host_speed, 130 .show_host_speed = 1, 131 .show_host_port_type = 1, 132 .get_host_port_state = fc_get_host_port_state, 133 .show_host_port_state = 1, 134 .show_host_symbolic_name = 1, 135 .show_rport_maxframe_size = 1, 136 .show_rport_supported_classes = 1, 137 .show_host_fabric_name = 1, 138 .show_starget_node_name = 1, 139 .show_starget_port_name = 1, 140 .show_starget_port_id = 1, 141 .show_rport_dev_loss_tmo = 1, 142 .issue_fc_host_lip = fnic_reset, 143 .get_fc_host_stats = fnic_get_stats, 144 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), 145 .terminate_rport_io = fnic_terminate_rport_io, 146 }; 147 148 static void fnic_get_host_speed(struct Scsi_Host *shost) 149 { 150 struct fc_lport *lp = shost_priv(shost); 151 struct fnic *fnic = lport_priv(lp); 152 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 153 154 /* Add in other values as they get defined in fw */ 155 switch (port_speed) { 156 case 10000: 157 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 158 break; 159 default: 160 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 161 break; 162 } 163 } 164 165 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 166 { 167 int ret; 168 struct fc_lport *lp = shost_priv(host); 169 struct fnic *fnic = lport_priv(lp); 170 struct fc_host_statistics *stats = &lp->host_stats; 171 struct vnic_stats *vs; 172 unsigned long flags; 173 174 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 175 return stats; 176 fnic->stats_time = jiffies; 177 178 spin_lock_irqsave(&fnic->fnic_lock, flags); 179 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 180 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 181 182 if (ret) { 183 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 184 "fnic: Get vnic stats failed" 185 " 0x%x", ret); 186 return stats; 187 } 188 vs = fnic->stats; 189 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 190 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 191 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 192 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 193 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 194 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 195 stats->invalid_crc_count = vs->rx.rx_crc_errors; 196 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ; 197 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 198 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 199 200 return stats; 201 } 202 203 void fnic_log_q_error(struct fnic *fnic) 204 { 205 unsigned int i; 206 u32 error_status; 207 208 for (i = 0; i < fnic->raw_wq_count; i++) { 209 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 210 if (error_status) 211 shost_printk(KERN_ERR, fnic->lport->host, 212 "WQ[%d] error_status" 213 " %d\n", i, error_status); 214 } 215 216 for (i = 0; i < fnic->rq_count; i++) { 217 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 218 if (error_status) 219 shost_printk(KERN_ERR, fnic->lport->host, 220 "RQ[%d] error_status" 221 " %d\n", i, error_status); 222 } 223 224 for (i = 0; i < fnic->wq_copy_count; i++) { 225 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); 226 if (error_status) 227 shost_printk(KERN_ERR, fnic->lport->host, 228 "CWQ[%d] error_status" 229 " %d\n", i, error_status); 230 } 231 } 232 233 void fnic_handle_link_event(struct fnic *fnic) 234 { 235 unsigned long flags; 236 237 spin_lock_irqsave(&fnic->fnic_lock, flags); 238 if (fnic->stop_rx_link_events) { 239 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 240 return; 241 } 242 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 243 244 queue_work(fnic_event_queue, &fnic->link_work); 245 246 } 247 248 static int fnic_notify_set(struct fnic *fnic) 249 { 250 int err; 251 252 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 253 case VNIC_DEV_INTR_MODE_INTX: 254 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 255 break; 256 case VNIC_DEV_INTR_MODE_MSI: 257 err = vnic_dev_notify_set(fnic->vdev, -1); 258 break; 259 case VNIC_DEV_INTR_MODE_MSIX: 260 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); 261 break; 262 default: 263 shost_printk(KERN_ERR, fnic->lport->host, 264 "Interrupt mode should be set up" 265 " before devcmd notify set %d\n", 266 vnic_dev_get_intr_mode(fnic->vdev)); 267 err = -1; 268 break; 269 } 270 271 return err; 272 } 273 274 static void fnic_notify_timer(unsigned long data) 275 { 276 struct fnic *fnic = (struct fnic *)data; 277 278 fnic_handle_link_event(fnic); 279 mod_timer(&fnic->notify_timer, 280 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 281 } 282 283 static void fnic_notify_timer_start(struct fnic *fnic) 284 { 285 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 286 case VNIC_DEV_INTR_MODE_MSI: 287 /* 288 * Schedule first timeout immediately. The driver is 289 * initiatialized and ready to look for link up notification 290 */ 291 mod_timer(&fnic->notify_timer, jiffies); 292 break; 293 default: 294 /* Using intr for notification for INTx/MSI-X */ 295 break; 296 }; 297 } 298 299 static int fnic_dev_wait(struct vnic_dev *vdev, 300 int (*start)(struct vnic_dev *, int), 301 int (*finished)(struct vnic_dev *, int *), 302 int arg) 303 { 304 unsigned long time; 305 int done; 306 int err; 307 308 err = start(vdev, arg); 309 if (err) 310 return err; 311 312 /* Wait for func to complete...2 seconds max */ 313 time = jiffies + (HZ * 2); 314 do { 315 err = finished(vdev, &done); 316 if (err) 317 return err; 318 if (done) 319 return 0; 320 schedule_timeout_uninterruptible(HZ / 10); 321 } while (time_after(time, jiffies)); 322 323 return -ETIMEDOUT; 324 } 325 326 static int fnic_cleanup(struct fnic *fnic) 327 { 328 unsigned int i; 329 int err; 330 331 vnic_dev_disable(fnic->vdev); 332 for (i = 0; i < fnic->intr_count; i++) 333 vnic_intr_mask(&fnic->intr[i]); 334 335 for (i = 0; i < fnic->rq_count; i++) { 336 err = vnic_rq_disable(&fnic->rq[i]); 337 if (err) 338 return err; 339 } 340 for (i = 0; i < fnic->raw_wq_count; i++) { 341 err = vnic_wq_disable(&fnic->wq[i]); 342 if (err) 343 return err; 344 } 345 for (i = 0; i < fnic->wq_copy_count; i++) { 346 err = vnic_wq_copy_disable(&fnic->wq_copy[i]); 347 if (err) 348 return err; 349 } 350 351 /* Clean up completed IOs and FCS frames */ 352 fnic_wq_copy_cmpl_handler(fnic, -1); 353 fnic_wq_cmpl_handler(fnic, -1); 354 fnic_rq_cmpl_handler(fnic, -1); 355 356 /* Clean up the IOs and FCS frames that have not completed */ 357 for (i = 0; i < fnic->raw_wq_count; i++) 358 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 359 for (i = 0; i < fnic->rq_count; i++) 360 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 361 for (i = 0; i < fnic->wq_copy_count; i++) 362 vnic_wq_copy_clean(&fnic->wq_copy[i], 363 fnic_wq_copy_cleanup_handler); 364 365 for (i = 0; i < fnic->cq_count; i++) 366 vnic_cq_clean(&fnic->cq[i]); 367 for (i = 0; i < fnic->intr_count; i++) 368 vnic_intr_clean(&fnic->intr[i]); 369 370 mempool_destroy(fnic->io_req_pool); 371 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 372 mempool_destroy(fnic->io_sgl_pool[i]); 373 374 return 0; 375 } 376 377 static void fnic_iounmap(struct fnic *fnic) 378 { 379 if (fnic->bar0.vaddr) 380 iounmap(fnic->bar0.vaddr); 381 } 382 383 /* 384 * Allocate element for mempools requiring GFP_DMA flag. 385 * Otherwise, checks in kmem_flagcheck() hit BUG_ON(). 386 */ 387 static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data) 388 { 389 struct kmem_cache *mem = pool_data; 390 391 return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA); 392 } 393 394 /** 395 * fnic_get_mac() - get assigned data MAC address for FIP code. 396 * @lport: local port. 397 */ 398 static u8 *fnic_get_mac(struct fc_lport *lport) 399 { 400 struct fnic *fnic = lport_priv(lport); 401 402 return fnic->data_src_addr; 403 } 404 405 static int __devinit fnic_probe(struct pci_dev *pdev, 406 const struct pci_device_id *ent) 407 { 408 struct Scsi_Host *host; 409 struct fc_lport *lp; 410 struct fnic *fnic; 411 mempool_t *pool; 412 int err; 413 int i; 414 unsigned long flags; 415 416 /* 417 * Allocate SCSI Host and set up association between host, 418 * local port, and fnic 419 */ 420 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic)); 421 if (!lp) { 422 printk(KERN_ERR PFX "Unable to alloc libfc local port\n"); 423 err = -ENOMEM; 424 goto err_out; 425 } 426 host = lp->host; 427 fnic = lport_priv(lp); 428 fnic->lport = lp; 429 fnic->ctlr.lp = lp; 430 431 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 432 host->host_no); 433 434 host->transportt = fnic_fc_transport; 435 436 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ); 437 if (err) { 438 shost_printk(KERN_ERR, fnic->lport->host, 439 "Unable to alloc shared tag map\n"); 440 goto err_out_free_hba; 441 } 442 443 /* Setup PCI resources */ 444 pci_set_drvdata(pdev, fnic); 445 446 fnic->pdev = pdev; 447 448 err = pci_enable_device(pdev); 449 if (err) { 450 shost_printk(KERN_ERR, fnic->lport->host, 451 "Cannot enable PCI device, aborting.\n"); 452 goto err_out_free_hba; 453 } 454 455 err = pci_request_regions(pdev, DRV_NAME); 456 if (err) { 457 shost_printk(KERN_ERR, fnic->lport->host, 458 "Cannot enable PCI resources, aborting\n"); 459 goto err_out_disable_device; 460 } 461 462 pci_set_master(pdev); 463 464 /* Query PCI controller on system for DMA addressing 465 * limitation for the device. Try 40-bit first, and 466 * fail to 32-bit. 467 */ 468 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 469 if (err) { 470 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 471 if (err) { 472 shost_printk(KERN_ERR, fnic->lport->host, 473 "No usable DMA configuration " 474 "aborting\n"); 475 goto err_out_release_regions; 476 } 477 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 478 if (err) { 479 shost_printk(KERN_ERR, fnic->lport->host, 480 "Unable to obtain 32-bit DMA " 481 "for consistent allocations, aborting.\n"); 482 goto err_out_release_regions; 483 } 484 } else { 485 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); 486 if (err) { 487 shost_printk(KERN_ERR, fnic->lport->host, 488 "Unable to obtain 40-bit DMA " 489 "for consistent allocations, aborting.\n"); 490 goto err_out_release_regions; 491 } 492 } 493 494 /* Map vNIC resources from BAR0 */ 495 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 496 shost_printk(KERN_ERR, fnic->lport->host, 497 "BAR0 not memory-map'able, aborting.\n"); 498 err = -ENODEV; 499 goto err_out_release_regions; 500 } 501 502 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 503 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 504 fnic->bar0.len = pci_resource_len(pdev, 0); 505 506 if (!fnic->bar0.vaddr) { 507 shost_printk(KERN_ERR, fnic->lport->host, 508 "Cannot memory-map BAR0 res hdr, " 509 "aborting.\n"); 510 err = -ENODEV; 511 goto err_out_release_regions; 512 } 513 514 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 515 if (!fnic->vdev) { 516 shost_printk(KERN_ERR, fnic->lport->host, 517 "vNIC registration failed, " 518 "aborting.\n"); 519 err = -ENODEV; 520 goto err_out_iounmap; 521 } 522 523 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 524 vnic_dev_open_done, 0); 525 if (err) { 526 shost_printk(KERN_ERR, fnic->lport->host, 527 "vNIC dev open failed, aborting.\n"); 528 goto err_out_vnic_unregister; 529 } 530 531 err = vnic_dev_init(fnic->vdev, 0); 532 if (err) { 533 shost_printk(KERN_ERR, fnic->lport->host, 534 "vNIC dev init failed, aborting.\n"); 535 goto err_out_dev_close; 536 } 537 538 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 539 if (err) { 540 shost_printk(KERN_ERR, fnic->lport->host, 541 "vNIC get MAC addr failed \n"); 542 goto err_out_dev_close; 543 } 544 /* set data_src for point-to-point mode and to keep it non-zero */ 545 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN); 546 547 /* Get vNIC configuration */ 548 err = fnic_get_vnic_config(fnic); 549 if (err) { 550 shost_printk(KERN_ERR, fnic->lport->host, 551 "Get vNIC configuration failed, " 552 "aborting.\n"); 553 goto err_out_dev_close; 554 } 555 host->max_lun = fnic->config.luns_per_tgt; 556 host->max_id = FNIC_MAX_FCP_TARGET; 557 host->max_cmd_len = FNIC_MAX_CMD_LEN; 558 559 fnic_get_res_counts(fnic); 560 561 err = fnic_set_intr_mode(fnic); 562 if (err) { 563 shost_printk(KERN_ERR, fnic->lport->host, 564 "Failed to set intr mode, " 565 "aborting.\n"); 566 goto err_out_dev_close; 567 } 568 569 err = fnic_alloc_vnic_resources(fnic); 570 if (err) { 571 shost_printk(KERN_ERR, fnic->lport->host, 572 "Failed to alloc vNIC resources, " 573 "aborting.\n"); 574 goto err_out_clear_intr; 575 } 576 577 578 /* initialize all fnic locks */ 579 spin_lock_init(&fnic->fnic_lock); 580 581 for (i = 0; i < FNIC_WQ_MAX; i++) 582 spin_lock_init(&fnic->wq_lock[i]); 583 584 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 585 spin_lock_init(&fnic->wq_copy_lock[i]); 586 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 587 fnic->fw_ack_recd[i] = 0; 588 fnic->fw_ack_index[i] = -1; 589 } 590 591 for (i = 0; i < FNIC_IO_LOCKS; i++) 592 spin_lock_init(&fnic->io_req_lock[i]); 593 594 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 595 if (!fnic->io_req_pool) 596 goto err_out_free_resources; 597 598 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab, 599 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 600 if (!pool) 601 goto err_out_free_ioreq_pool; 602 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 603 604 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab, 605 fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 606 if (!pool) 607 goto err_out_free_dflt_pool; 608 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 609 610 /* setup vlan config, hw inserts vlan header */ 611 fnic->vlan_hw_insert = 1; 612 fnic->vlan_id = 0; 613 614 /* Initialize the FIP fcoe_ctrl struct */ 615 fnic->ctlr.send = fnic_eth_send; 616 fnic->ctlr.update_mac = fnic_update_mac; 617 fnic->ctlr.get_src_addr = fnic_get_mac; 618 fcoe_ctlr_init(&fnic->ctlr); 619 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 620 shost_printk(KERN_INFO, fnic->lport->host, 621 "firmware supports FIP\n"); 622 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 623 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 624 } else { 625 shost_printk(KERN_INFO, fnic->lport->host, 626 "firmware uses non-FIP mode\n"); 627 fnic->ctlr.mode = FIP_ST_NON_FIP; 628 } 629 fnic->state = FNIC_IN_FC_MODE; 630 631 /* Enable hardware stripping of vlan header on ingress */ 632 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 633 634 /* Setup notification buffer area */ 635 err = fnic_notify_set(fnic); 636 if (err) { 637 shost_printk(KERN_ERR, fnic->lport->host, 638 "Failed to alloc notify buffer, aborting.\n"); 639 goto err_out_free_max_pool; 640 } 641 642 /* Setup notify timer when using MSI interrupts */ 643 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 644 setup_timer(&fnic->notify_timer, 645 fnic_notify_timer, (unsigned long)fnic); 646 647 /* allocate RQ buffers and post them to RQ*/ 648 for (i = 0; i < fnic->rq_count; i++) { 649 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 650 if (err) { 651 shost_printk(KERN_ERR, fnic->lport->host, 652 "fnic_alloc_rq_frame can't alloc " 653 "frame\n"); 654 goto err_out_free_rq_buf; 655 } 656 } 657 658 /* 659 * Initialization done with PCI system, hardware, firmware. 660 * Add host to SCSI 661 */ 662 err = scsi_add_host(lp->host, &pdev->dev); 663 if (err) { 664 shost_printk(KERN_ERR, fnic->lport->host, 665 "fnic: scsi_add_host failed...exiting\n"); 666 goto err_out_free_rq_buf; 667 } 668 669 /* Start local port initiatialization */ 670 671 lp->link_up = 0; 672 lp->tt = fnic_transport_template; 673 674 lp->max_retry_count = fnic->config.flogi_retries; 675 lp->max_rport_retry_count = fnic->config.plogi_retries; 676 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 677 FCP_SPPF_CONF_COMPL); 678 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 679 lp->service_params |= FCP_SPPF_RETRY; 680 681 lp->boot_time = jiffies; 682 lp->e_d_tov = fnic->config.ed_tov; 683 lp->r_a_tov = fnic->config.ra_tov; 684 lp->link_supported_speeds = FC_PORTSPEED_10GBIT; 685 fc_set_wwnn(lp, fnic->config.node_wwn); 686 fc_set_wwpn(lp, fnic->config.port_wwn); 687 688 fc_lport_init(lp); 689 fc_exch_init(lp); 690 fc_elsct_init(lp); 691 fc_rport_init(lp); 692 fc_disc_init(lp); 693 694 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 695 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 696 err = -ENOMEM; 697 goto err_out_remove_scsi_host; 698 } 699 700 fc_lport_config(lp); 701 702 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + 703 sizeof(struct fc_frame_header))) { 704 err = -EINVAL; 705 goto err_out_free_exch_mgr; 706 } 707 fc_host_maxframe_size(lp->host) = lp->mfs; 708 709 sprintf(fc_host_symbolic_name(lp->host), 710 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 711 712 spin_lock_irqsave(&fnic_list_lock, flags); 713 list_add_tail(&fnic->list, &fnic_list); 714 spin_unlock_irqrestore(&fnic_list_lock, flags); 715 716 INIT_WORK(&fnic->link_work, fnic_handle_link); 717 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 718 skb_queue_head_init(&fnic->frame_queue); 719 skb_queue_head_init(&fnic->tx_queue); 720 721 /* Enable all queues */ 722 for (i = 0; i < fnic->raw_wq_count; i++) 723 vnic_wq_enable(&fnic->wq[i]); 724 for (i = 0; i < fnic->rq_count; i++) 725 vnic_rq_enable(&fnic->rq[i]); 726 for (i = 0; i < fnic->wq_copy_count; i++) 727 vnic_wq_copy_enable(&fnic->wq_copy[i]); 728 729 fc_fabric_login(lp); 730 731 vnic_dev_enable(fnic->vdev); 732 733 err = fnic_request_intr(fnic); 734 if (err) { 735 shost_printk(KERN_ERR, fnic->lport->host, 736 "Unable to request irq.\n"); 737 goto err_out_free_exch_mgr; 738 } 739 740 for (i = 0; i < fnic->intr_count; i++) 741 vnic_intr_unmask(&fnic->intr[i]); 742 743 fnic_notify_timer_start(fnic); 744 745 return 0; 746 747 err_out_free_exch_mgr: 748 fc_exch_mgr_free(lp); 749 err_out_remove_scsi_host: 750 fc_remove_host(lp->host); 751 scsi_remove_host(lp->host); 752 err_out_free_rq_buf: 753 for (i = 0; i < fnic->rq_count; i++) 754 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 755 vnic_dev_notify_unset(fnic->vdev); 756 err_out_free_max_pool: 757 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 758 err_out_free_dflt_pool: 759 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 760 err_out_free_ioreq_pool: 761 mempool_destroy(fnic->io_req_pool); 762 err_out_free_resources: 763 fnic_free_vnic_resources(fnic); 764 err_out_clear_intr: 765 fnic_clear_intr_mode(fnic); 766 err_out_dev_close: 767 vnic_dev_close(fnic->vdev); 768 err_out_vnic_unregister: 769 vnic_dev_unregister(fnic->vdev); 770 err_out_iounmap: 771 fnic_iounmap(fnic); 772 err_out_release_regions: 773 pci_release_regions(pdev); 774 err_out_disable_device: 775 pci_disable_device(pdev); 776 err_out_free_hba: 777 scsi_host_put(lp->host); 778 err_out: 779 return err; 780 } 781 782 static void __devexit fnic_remove(struct pci_dev *pdev) 783 { 784 struct fnic *fnic = pci_get_drvdata(pdev); 785 struct fc_lport *lp = fnic->lport; 786 unsigned long flags; 787 788 /* 789 * Mark state so that the workqueue thread stops forwarding 790 * received frames and link events to the local port. ISR and 791 * other threads that can queue work items will also stop 792 * creating work items on the fnic workqueue 793 */ 794 spin_lock_irqsave(&fnic->fnic_lock, flags); 795 fnic->stop_rx_link_events = 1; 796 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 797 798 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 799 del_timer_sync(&fnic->notify_timer); 800 801 /* 802 * Flush the fnic event queue. After this call, there should 803 * be no event queued for this fnic device in the workqueue 804 */ 805 flush_workqueue(fnic_event_queue); 806 skb_queue_purge(&fnic->frame_queue); 807 skb_queue_purge(&fnic->tx_queue); 808 809 /* 810 * Log off the fabric. This stops all remote ports, dns port, 811 * logs off the fabric. This flushes all rport, disc, lport work 812 * before returning 813 */ 814 fc_fabric_logoff(fnic->lport); 815 816 spin_lock_irqsave(&fnic->fnic_lock, flags); 817 fnic->in_remove = 1; 818 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 819 820 fcoe_ctlr_destroy(&fnic->ctlr); 821 fc_lport_destroy(lp); 822 823 /* 824 * This stops the fnic device, masks all interrupts. Completed 825 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 826 * cleaned up 827 */ 828 fnic_cleanup(fnic); 829 830 BUG_ON(!skb_queue_empty(&fnic->frame_queue)); 831 BUG_ON(!skb_queue_empty(&fnic->tx_queue)); 832 833 spin_lock_irqsave(&fnic_list_lock, flags); 834 list_del(&fnic->list); 835 spin_unlock_irqrestore(&fnic_list_lock, flags); 836 837 fc_remove_host(fnic->lport->host); 838 scsi_remove_host(fnic->lport->host); 839 fc_exch_mgr_free(fnic->lport); 840 vnic_dev_notify_unset(fnic->vdev); 841 fnic_free_intr(fnic); 842 fnic_free_vnic_resources(fnic); 843 fnic_clear_intr_mode(fnic); 844 vnic_dev_close(fnic->vdev); 845 vnic_dev_unregister(fnic->vdev); 846 fnic_iounmap(fnic); 847 pci_release_regions(pdev); 848 pci_disable_device(pdev); 849 pci_set_drvdata(pdev, NULL); 850 scsi_host_put(lp->host); 851 } 852 853 static struct pci_driver fnic_driver = { 854 .name = DRV_NAME, 855 .id_table = fnic_id_table, 856 .probe = fnic_probe, 857 .remove = __devexit_p(fnic_remove), 858 }; 859 860 static int __init fnic_init_module(void) 861 { 862 size_t len; 863 int err = 0; 864 865 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 866 867 /* Create a cache for allocation of default size sgls */ 868 len = sizeof(struct fnic_dflt_sgl_list); 869 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 870 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 871 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, 872 NULL); 873 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 874 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 875 err = -ENOMEM; 876 goto err_create_fnic_sgl_slab_dflt; 877 } 878 879 /* Create a cache for allocation of max size sgls*/ 880 len = sizeof(struct fnic_sgl_list); 881 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 882 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 883 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, 884 NULL); 885 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 886 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 887 err = -ENOMEM; 888 goto err_create_fnic_sgl_slab_max; 889 } 890 891 /* Create a cache of io_req structs for use via mempool */ 892 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 893 sizeof(struct fnic_io_req), 894 0, SLAB_HWCACHE_ALIGN, NULL); 895 if (!fnic_io_req_cache) { 896 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 897 err = -ENOMEM; 898 goto err_create_fnic_ioreq_slab; 899 } 900 901 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); 902 if (!fnic_event_queue) { 903 printk(KERN_ERR PFX "fnic work queue create failed\n"); 904 err = -ENOMEM; 905 goto err_create_fnic_workq; 906 } 907 908 spin_lock_init(&fnic_list_lock); 909 INIT_LIST_HEAD(&fnic_list); 910 911 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 912 if (!fnic_fc_transport) { 913 printk(KERN_ERR PFX "fc_attach_transport error\n"); 914 err = -ENOMEM; 915 goto err_fc_transport; 916 } 917 918 /* register the driver with PCI system */ 919 err = pci_register_driver(&fnic_driver); 920 if (err < 0) { 921 printk(KERN_ERR PFX "pci register error\n"); 922 goto err_pci_register; 923 } 924 return err; 925 926 err_pci_register: 927 fc_release_transport(fnic_fc_transport); 928 err_fc_transport: 929 destroy_workqueue(fnic_event_queue); 930 err_create_fnic_workq: 931 kmem_cache_destroy(fnic_io_req_cache); 932 err_create_fnic_ioreq_slab: 933 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 934 err_create_fnic_sgl_slab_max: 935 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 936 err_create_fnic_sgl_slab_dflt: 937 return err; 938 } 939 940 static void __exit fnic_cleanup_module(void) 941 { 942 pci_unregister_driver(&fnic_driver); 943 destroy_workqueue(fnic_event_queue); 944 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 945 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 946 kmem_cache_destroy(fnic_io_req_cache); 947 fc_release_transport(fnic_fc_transport); 948 } 949 950 module_init(fnic_init_module); 951 module_exit(fnic_cleanup_module); 952 953