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