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 unsigned int fnic_trace_max_pages = 16; 72 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR); 73 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages " 74 "for fnic trace buffer"); 75 76 static struct libfc_function_template fnic_transport_template = { 77 .frame_send = fnic_send, 78 .lport_set_port_id = fnic_set_port_id, 79 .fcp_abort_io = fnic_empty_scsi_cleanup, 80 .fcp_cleanup = fnic_empty_scsi_cleanup, 81 .exch_mgr_reset = fnic_exch_mgr_reset 82 }; 83 84 static int fnic_slave_alloc(struct scsi_device *sdev) 85 { 86 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 87 88 sdev->tagged_supported = 1; 89 90 if (!rport || fc_remote_port_chkready(rport)) 91 return -ENXIO; 92 93 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); 94 return 0; 95 } 96 97 static struct scsi_host_template fnic_host_template = { 98 .module = THIS_MODULE, 99 .name = DRV_NAME, 100 .queuecommand = fnic_queuecommand, 101 .eh_abort_handler = fnic_abort_cmd, 102 .eh_device_reset_handler = fnic_device_reset, 103 .eh_host_reset_handler = fnic_host_reset, 104 .slave_alloc = fnic_slave_alloc, 105 .change_queue_depth = fc_change_queue_depth, 106 .change_queue_type = fc_change_queue_type, 107 .this_id = -1, 108 .cmd_per_lun = 3, 109 .can_queue = FNIC_MAX_IO_REQ, 110 .use_clustering = ENABLE_CLUSTERING, 111 .sg_tablesize = FNIC_MAX_SG_DESC_CNT, 112 .max_sectors = 0xffff, 113 .shost_attrs = fnic_attrs, 114 }; 115 116 static void 117 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) 118 { 119 if (timeout) 120 rport->dev_loss_tmo = timeout; 121 else 122 rport->dev_loss_tmo = 1; 123 } 124 125 static void fnic_get_host_speed(struct Scsi_Host *shost); 126 static struct scsi_transport_template *fnic_fc_transport; 127 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 128 129 static struct fc_function_template fnic_fc_functions = { 130 131 .show_host_node_name = 1, 132 .show_host_port_name = 1, 133 .show_host_supported_classes = 1, 134 .show_host_supported_fc4s = 1, 135 .show_host_active_fc4s = 1, 136 .show_host_maxframe_size = 1, 137 .show_host_port_id = 1, 138 .show_host_supported_speeds = 1, 139 .get_host_speed = fnic_get_host_speed, 140 .show_host_speed = 1, 141 .show_host_port_type = 1, 142 .get_host_port_state = fc_get_host_port_state, 143 .show_host_port_state = 1, 144 .show_host_symbolic_name = 1, 145 .show_rport_maxframe_size = 1, 146 .show_rport_supported_classes = 1, 147 .show_host_fabric_name = 1, 148 .show_starget_node_name = 1, 149 .show_starget_port_name = 1, 150 .show_starget_port_id = 1, 151 .show_rport_dev_loss_tmo = 1, 152 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo, 153 .issue_fc_host_lip = fnic_reset, 154 .get_fc_host_stats = fnic_get_stats, 155 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), 156 .terminate_rport_io = fnic_terminate_rport_io, 157 .bsg_request = fc_lport_bsg_request, 158 }; 159 160 static void fnic_get_host_speed(struct Scsi_Host *shost) 161 { 162 struct fc_lport *lp = shost_priv(shost); 163 struct fnic *fnic = lport_priv(lp); 164 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 165 166 /* Add in other values as they get defined in fw */ 167 switch (port_speed) { 168 case 10000: 169 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 170 break; 171 default: 172 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 173 break; 174 } 175 } 176 177 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 178 { 179 int ret; 180 struct fc_lport *lp = shost_priv(host); 181 struct fnic *fnic = lport_priv(lp); 182 struct fc_host_statistics *stats = &lp->host_stats; 183 struct vnic_stats *vs; 184 unsigned long flags; 185 186 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 187 return stats; 188 fnic->stats_time = jiffies; 189 190 spin_lock_irqsave(&fnic->fnic_lock, flags); 191 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 192 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 193 194 if (ret) { 195 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 196 "fnic: Get vnic stats failed" 197 " 0x%x", ret); 198 return stats; 199 } 200 vs = fnic->stats; 201 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 202 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 203 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 204 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 205 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 206 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 207 stats->invalid_crc_count = vs->rx.rx_crc_errors; 208 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ; 209 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 210 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 211 212 return stats; 213 } 214 215 void fnic_log_q_error(struct fnic *fnic) 216 { 217 unsigned int i; 218 u32 error_status; 219 220 for (i = 0; i < fnic->raw_wq_count; i++) { 221 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 222 if (error_status) 223 shost_printk(KERN_ERR, fnic->lport->host, 224 "WQ[%d] error_status" 225 " %d\n", i, error_status); 226 } 227 228 for (i = 0; i < fnic->rq_count; i++) { 229 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 230 if (error_status) 231 shost_printk(KERN_ERR, fnic->lport->host, 232 "RQ[%d] error_status" 233 " %d\n", i, error_status); 234 } 235 236 for (i = 0; i < fnic->wq_copy_count; i++) { 237 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); 238 if (error_status) 239 shost_printk(KERN_ERR, fnic->lport->host, 240 "CWQ[%d] error_status" 241 " %d\n", i, error_status); 242 } 243 } 244 245 void fnic_handle_link_event(struct fnic *fnic) 246 { 247 unsigned long flags; 248 249 spin_lock_irqsave(&fnic->fnic_lock, flags); 250 if (fnic->stop_rx_link_events) { 251 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 252 return; 253 } 254 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 255 256 queue_work(fnic_event_queue, &fnic->link_work); 257 258 } 259 260 static int fnic_notify_set(struct fnic *fnic) 261 { 262 int err; 263 264 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 265 case VNIC_DEV_INTR_MODE_INTX: 266 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 267 break; 268 case VNIC_DEV_INTR_MODE_MSI: 269 err = vnic_dev_notify_set(fnic->vdev, -1); 270 break; 271 case VNIC_DEV_INTR_MODE_MSIX: 272 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); 273 break; 274 default: 275 shost_printk(KERN_ERR, fnic->lport->host, 276 "Interrupt mode should be set up" 277 " before devcmd notify set %d\n", 278 vnic_dev_get_intr_mode(fnic->vdev)); 279 err = -1; 280 break; 281 } 282 283 return err; 284 } 285 286 static void fnic_notify_timer(unsigned long data) 287 { 288 struct fnic *fnic = (struct fnic *)data; 289 290 fnic_handle_link_event(fnic); 291 mod_timer(&fnic->notify_timer, 292 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 293 } 294 295 static void fnic_notify_timer_start(struct fnic *fnic) 296 { 297 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 298 case VNIC_DEV_INTR_MODE_MSI: 299 /* 300 * Schedule first timeout immediately. The driver is 301 * initiatialized and ready to look for link up notification 302 */ 303 mod_timer(&fnic->notify_timer, jiffies); 304 break; 305 default: 306 /* Using intr for notification for INTx/MSI-X */ 307 break; 308 }; 309 } 310 311 static int fnic_dev_wait(struct vnic_dev *vdev, 312 int (*start)(struct vnic_dev *, int), 313 int (*finished)(struct vnic_dev *, int *), 314 int arg) 315 { 316 unsigned long time; 317 int done; 318 int err; 319 320 err = start(vdev, arg); 321 if (err) 322 return err; 323 324 /* Wait for func to complete...2 seconds max */ 325 time = jiffies + (HZ * 2); 326 do { 327 err = finished(vdev, &done); 328 if (err) 329 return err; 330 if (done) 331 return 0; 332 schedule_timeout_uninterruptible(HZ / 10); 333 } while (time_after(time, jiffies)); 334 335 return -ETIMEDOUT; 336 } 337 338 static int fnic_cleanup(struct fnic *fnic) 339 { 340 unsigned int i; 341 int err; 342 343 vnic_dev_disable(fnic->vdev); 344 for (i = 0; i < fnic->intr_count; i++) 345 vnic_intr_mask(&fnic->intr[i]); 346 347 for (i = 0; i < fnic->rq_count; i++) { 348 err = vnic_rq_disable(&fnic->rq[i]); 349 if (err) 350 return err; 351 } 352 for (i = 0; i < fnic->raw_wq_count; i++) { 353 err = vnic_wq_disable(&fnic->wq[i]); 354 if (err) 355 return err; 356 } 357 for (i = 0; i < fnic->wq_copy_count; i++) { 358 err = vnic_wq_copy_disable(&fnic->wq_copy[i]); 359 if (err) 360 return err; 361 } 362 363 /* Clean up completed IOs and FCS frames */ 364 fnic_wq_copy_cmpl_handler(fnic, -1); 365 fnic_wq_cmpl_handler(fnic, -1); 366 fnic_rq_cmpl_handler(fnic, -1); 367 368 /* Clean up the IOs and FCS frames that have not completed */ 369 for (i = 0; i < fnic->raw_wq_count; i++) 370 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 371 for (i = 0; i < fnic->rq_count; i++) 372 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 373 for (i = 0; i < fnic->wq_copy_count; i++) 374 vnic_wq_copy_clean(&fnic->wq_copy[i], 375 fnic_wq_copy_cleanup_handler); 376 377 for (i = 0; i < fnic->cq_count; i++) 378 vnic_cq_clean(&fnic->cq[i]); 379 for (i = 0; i < fnic->intr_count; i++) 380 vnic_intr_clean(&fnic->intr[i]); 381 382 mempool_destroy(fnic->io_req_pool); 383 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 384 mempool_destroy(fnic->io_sgl_pool[i]); 385 386 return 0; 387 } 388 389 static void fnic_iounmap(struct fnic *fnic) 390 { 391 if (fnic->bar0.vaddr) 392 iounmap(fnic->bar0.vaddr); 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 fnic_probe(struct pci_dev *pdev, 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 = FCOE_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_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 599 if (!pool) 600 goto err_out_free_ioreq_pool; 601 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 602 603 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 604 if (!pool) 605 goto err_out_free_dflt_pool; 606 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 607 608 /* setup vlan config, hw inserts vlan header */ 609 fnic->vlan_hw_insert = 1; 610 fnic->vlan_id = 0; 611 612 /* Initialize the FIP fcoe_ctrl struct */ 613 fnic->ctlr.send = fnic_eth_send; 614 fnic->ctlr.update_mac = fnic_update_mac; 615 fnic->ctlr.get_src_addr = fnic_get_mac; 616 if (fnic->config.flags & VFCF_FIP_CAPABLE) { 617 shost_printk(KERN_INFO, fnic->lport->host, 618 "firmware supports FIP\n"); 619 /* enable directed and multicast */ 620 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); 621 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); 622 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 623 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); 624 } else { 625 shost_printk(KERN_INFO, fnic->lport->host, 626 "firmware uses non-FIP mode\n"); 627 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); 628 } 629 fnic->state = FNIC_IN_FC_MODE; 630 631 atomic_set(&fnic->in_flight, 0); 632 fnic->state_flags = FNIC_FLAGS_NONE; 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; 675 676 lp->max_retry_count = fnic->config.flogi_retries; 677 lp->max_rport_retry_count = fnic->config.plogi_retries; 678 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | 679 FCP_SPPF_CONF_COMPL); 680 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) 681 lp->service_params |= FCP_SPPF_RETRY; 682 683 lp->boot_time = jiffies; 684 lp->e_d_tov = fnic->config.ed_tov; 685 lp->r_a_tov = fnic->config.ra_tov; 686 lp->link_supported_speeds = FC_PORTSPEED_10GBIT; 687 fc_set_wwnn(lp, fnic->config.node_wwn); 688 fc_set_wwpn(lp, fnic->config.port_wwn); 689 690 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); 691 692 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 693 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 694 err = -ENOMEM; 695 goto err_out_remove_scsi_host; 696 } 697 698 fc_lport_init_stats(lp); 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 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000; 709 710 sprintf(fc_host_symbolic_name(lp->host), 711 DRV_NAME " v" DRV_VERSION " over %s", fnic->name); 712 713 spin_lock_irqsave(&fnic_list_lock, flags); 714 list_add_tail(&fnic->list, &fnic_list); 715 spin_unlock_irqrestore(&fnic_list_lock, flags); 716 717 INIT_WORK(&fnic->link_work, fnic_handle_link); 718 INIT_WORK(&fnic->frame_work, fnic_handle_frame); 719 skb_queue_head_init(&fnic->frame_queue); 720 skb_queue_head_init(&fnic->tx_queue); 721 722 /* Enable all queues */ 723 for (i = 0; i < fnic->raw_wq_count; i++) 724 vnic_wq_enable(&fnic->wq[i]); 725 for (i = 0; i < fnic->rq_count; i++) 726 vnic_rq_enable(&fnic->rq[i]); 727 for (i = 0; i < fnic->wq_copy_count; i++) 728 vnic_wq_copy_enable(&fnic->wq_copy[i]); 729 730 fc_fabric_login(lp); 731 732 vnic_dev_enable(fnic->vdev); 733 734 err = fnic_request_intr(fnic); 735 if (err) { 736 shost_printk(KERN_ERR, fnic->lport->host, 737 "Unable to request irq.\n"); 738 goto err_out_free_exch_mgr; 739 } 740 741 for (i = 0; i < fnic->intr_count; i++) 742 vnic_intr_unmask(&fnic->intr[i]); 743 744 fnic_notify_timer_start(fnic); 745 746 return 0; 747 748 err_out_free_exch_mgr: 749 fc_exch_mgr_free(lp); 750 err_out_remove_scsi_host: 751 fc_remove_host(lp->host); 752 scsi_remove_host(lp->host); 753 err_out_free_rq_buf: 754 for (i = 0; i < fnic->rq_count; i++) 755 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 756 vnic_dev_notify_unset(fnic->vdev); 757 err_out_free_max_pool: 758 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 759 err_out_free_dflt_pool: 760 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 761 err_out_free_ioreq_pool: 762 mempool_destroy(fnic->io_req_pool); 763 err_out_free_resources: 764 fnic_free_vnic_resources(fnic); 765 err_out_clear_intr: 766 fnic_clear_intr_mode(fnic); 767 err_out_dev_close: 768 vnic_dev_close(fnic->vdev); 769 err_out_vnic_unregister: 770 vnic_dev_unregister(fnic->vdev); 771 err_out_iounmap: 772 fnic_iounmap(fnic); 773 err_out_release_regions: 774 pci_release_regions(pdev); 775 err_out_disable_device: 776 pci_disable_device(pdev); 777 err_out_free_hba: 778 scsi_host_put(lp->host); 779 err_out: 780 return err; 781 } 782 783 static void fnic_remove(struct pci_dev *pdev) 784 { 785 struct fnic *fnic = pci_get_drvdata(pdev); 786 struct fc_lport *lp = fnic->lport; 787 unsigned long flags; 788 789 /* 790 * Mark state so that the workqueue thread stops forwarding 791 * received frames and link events to the local port. ISR and 792 * other threads that can queue work items will also stop 793 * creating work items on the fnic workqueue 794 */ 795 spin_lock_irqsave(&fnic->fnic_lock, flags); 796 fnic->stop_rx_link_events = 1; 797 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 798 799 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 800 del_timer_sync(&fnic->notify_timer); 801 802 /* 803 * Flush the fnic event queue. After this call, there should 804 * be no event queued for this fnic device in the workqueue 805 */ 806 flush_workqueue(fnic_event_queue); 807 skb_queue_purge(&fnic->frame_queue); 808 skb_queue_purge(&fnic->tx_queue); 809 810 /* 811 * Log off the fabric. This stops all remote ports, dns port, 812 * logs off the fabric. This flushes all rport, disc, lport work 813 * before returning 814 */ 815 fc_fabric_logoff(fnic->lport); 816 817 spin_lock_irqsave(&fnic->fnic_lock, flags); 818 fnic->in_remove = 1; 819 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 820 821 fcoe_ctlr_destroy(&fnic->ctlr); 822 fc_lport_destroy(lp); 823 824 /* 825 * This stops the fnic device, masks all interrupts. Completed 826 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are 827 * cleaned up 828 */ 829 fnic_cleanup(fnic); 830 831 BUG_ON(!skb_queue_empty(&fnic->frame_queue)); 832 BUG_ON(!skb_queue_empty(&fnic->tx_queue)); 833 834 spin_lock_irqsave(&fnic_list_lock, flags); 835 list_del(&fnic->list); 836 spin_unlock_irqrestore(&fnic_list_lock, flags); 837 838 fc_remove_host(fnic->lport->host); 839 scsi_remove_host(fnic->lport->host); 840 fc_exch_mgr_free(fnic->lport); 841 vnic_dev_notify_unset(fnic->vdev); 842 fnic_free_intr(fnic); 843 fnic_free_vnic_resources(fnic); 844 fnic_clear_intr_mode(fnic); 845 vnic_dev_close(fnic->vdev); 846 vnic_dev_unregister(fnic->vdev); 847 fnic_iounmap(fnic); 848 pci_release_regions(pdev); 849 pci_disable_device(pdev); 850 pci_set_drvdata(pdev, NULL); 851 scsi_host_put(lp->host); 852 } 853 854 static struct pci_driver fnic_driver = { 855 .name = DRV_NAME, 856 .id_table = fnic_id_table, 857 .probe = fnic_probe, 858 .remove = fnic_remove, 859 }; 860 861 static int __init fnic_init_module(void) 862 { 863 size_t len; 864 int err = 0; 865 866 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION); 867 868 /* Allocate memory for trace buffer */ 869 err = fnic_trace_buf_init(); 870 if (err < 0) { 871 printk(KERN_ERR PFX "Trace buffer initialization Failed " 872 "Fnic Tracing utility is disabled\n"); 873 fnic_trace_free(); 874 } 875 876 /* Create a cache for allocation of default size sgls */ 877 len = sizeof(struct fnic_dflt_sgl_list); 878 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 879 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 880 SLAB_HWCACHE_ALIGN, 881 NULL); 882 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 883 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 884 err = -ENOMEM; 885 goto err_create_fnic_sgl_slab_dflt; 886 } 887 888 /* Create a cache for allocation of max size sgls*/ 889 len = sizeof(struct fnic_sgl_list); 890 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 891 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 892 SLAB_HWCACHE_ALIGN, 893 NULL); 894 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 895 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 896 err = -ENOMEM; 897 goto err_create_fnic_sgl_slab_max; 898 } 899 900 /* Create a cache of io_req structs for use via mempool */ 901 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 902 sizeof(struct fnic_io_req), 903 0, SLAB_HWCACHE_ALIGN, NULL); 904 if (!fnic_io_req_cache) { 905 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 906 err = -ENOMEM; 907 goto err_create_fnic_ioreq_slab; 908 } 909 910 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); 911 if (!fnic_event_queue) { 912 printk(KERN_ERR PFX "fnic work queue create failed\n"); 913 err = -ENOMEM; 914 goto err_create_fnic_workq; 915 } 916 917 spin_lock_init(&fnic_list_lock); 918 INIT_LIST_HEAD(&fnic_list); 919 920 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 921 if (!fnic_fc_transport) { 922 printk(KERN_ERR PFX "fc_attach_transport error\n"); 923 err = -ENOMEM; 924 goto err_fc_transport; 925 } 926 927 /* register the driver with PCI system */ 928 err = pci_register_driver(&fnic_driver); 929 if (err < 0) { 930 printk(KERN_ERR PFX "pci register error\n"); 931 goto err_pci_register; 932 } 933 return err; 934 935 err_pci_register: 936 fc_release_transport(fnic_fc_transport); 937 err_fc_transport: 938 destroy_workqueue(fnic_event_queue); 939 err_create_fnic_workq: 940 kmem_cache_destroy(fnic_io_req_cache); 941 err_create_fnic_ioreq_slab: 942 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 943 err_create_fnic_sgl_slab_max: 944 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 945 err_create_fnic_sgl_slab_dflt: 946 fnic_trace_free(); 947 return err; 948 } 949 950 static void __exit fnic_cleanup_module(void) 951 { 952 pci_unregister_driver(&fnic_driver); 953 destroy_workqueue(fnic_event_queue); 954 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 955 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 956 kmem_cache_destroy(fnic_io_req_cache); 957 fc_release_transport(fnic_fc_transport); 958 fnic_trace_free(); 959 } 960 961 module_init(fnic_init_module); 962 module_exit(fnic_cleanup_module); 963 964