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 49static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES]; 50static struct kmem_cache *fnic_io_req_cache; 51LIST_HEAD(fnic_list); 52DEFINE_SPINLOCK(fnic_list_lock); 53 54/* Supported devices by fnic module */ 55static struct pci_device_id fnic_id_table[] = { 56 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) }, 57 { 0, } 58}; 59 60MODULE_DESCRIPTION(DRV_DESCRIPTION); 61MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, " 62 "Joseph R. Eykholt <jeykholt@cisco.com>"); 63MODULE_LICENSE("GPL v2"); 64MODULE_VERSION(DRV_VERSION); 65MODULE_DEVICE_TABLE(pci, fnic_id_table); 66 67unsigned int fnic_log_level; 68module_param(fnic_log_level, int, S_IRUGO|S_IWUSR); 69MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels"); 70 71 72static 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 80static int fnic_slave_alloc(struct scsi_device *sdev) 81{ 82 struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); 83 struct fc_lport *lp = shost_priv(sdev->host); 84 struct fnic *fnic = lport_priv(lp); 85 86 sdev->tagged_supported = 1; 87 88 if (!rport || fc_remote_port_chkready(rport)) 89 return -ENXIO; 90 91 scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH); 92 rport->dev_loss_tmo = fnic->config.port_down_timeout / 1000; 93 94 return 0; 95} 96 97static 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 116static void fnic_get_host_speed(struct Scsi_Host *shost); 117static struct scsi_transport_template *fnic_fc_transport; 118static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *); 119 120static struct fc_function_template fnic_fc_functions = { 121 122 .show_host_node_name = 1, 123 .show_host_port_name = 1, 124 .show_host_supported_classes = 1, 125 .show_host_supported_fc4s = 1, 126 .show_host_active_fc4s = 1, 127 .show_host_maxframe_size = 1, 128 .show_host_port_id = 1, 129 .show_host_supported_speeds = 1, 130 .get_host_speed = fnic_get_host_speed, 131 .show_host_speed = 1, 132 .show_host_port_type = 1, 133 .get_host_port_state = fc_get_host_port_state, 134 .show_host_port_state = 1, 135 .show_host_symbolic_name = 1, 136 .show_rport_maxframe_size = 1, 137 .show_rport_supported_classes = 1, 138 .show_host_fabric_name = 1, 139 .show_starget_node_name = 1, 140 .show_starget_port_name = 1, 141 .show_starget_port_id = 1, 142 .show_rport_dev_loss_tmo = 1, 143 .issue_fc_host_lip = fnic_reset, 144 .get_fc_host_stats = fnic_get_stats, 145 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), 146 .terminate_rport_io = fnic_terminate_rport_io, 147 .bsg_request = fc_lport_bsg_request, 148}; 149 150static void fnic_get_host_speed(struct Scsi_Host *shost) 151{ 152 struct fc_lport *lp = shost_priv(shost); 153 struct fnic *fnic = lport_priv(lp); 154 u32 port_speed = vnic_dev_port_speed(fnic->vdev); 155 156 /* Add in other values as they get defined in fw */ 157 switch (port_speed) { 158 case 10000: 159 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 160 break; 161 default: 162 fc_host_speed(shost) = FC_PORTSPEED_10GBIT; 163 break; 164 } 165} 166 167static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host) 168{ 169 int ret; 170 struct fc_lport *lp = shost_priv(host); 171 struct fnic *fnic = lport_priv(lp); 172 struct fc_host_statistics *stats = &lp->host_stats; 173 struct vnic_stats *vs; 174 unsigned long flags; 175 176 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT)) 177 return stats; 178 fnic->stats_time = jiffies; 179 180 spin_lock_irqsave(&fnic->fnic_lock, flags); 181 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats); 182 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 183 184 if (ret) { 185 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, 186 "fnic: Get vnic stats failed" 187 " 0x%x", ret); 188 return stats; 189 } 190 vs = fnic->stats; 191 stats->tx_frames = vs->tx.tx_unicast_frames_ok; 192 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4; 193 stats->rx_frames = vs->rx.rx_unicast_frames_ok; 194 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4; 195 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors; 196 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop; 197 stats->invalid_crc_count = vs->rx.rx_crc_errors; 198 stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ; 199 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000); 200 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000); 201 202 return stats; 203} 204 205void fnic_log_q_error(struct fnic *fnic) 206{ 207 unsigned int i; 208 u32 error_status; 209 210 for (i = 0; i < fnic->raw_wq_count; i++) { 211 error_status = ioread32(&fnic->wq[i].ctrl->error_status); 212 if (error_status) 213 shost_printk(KERN_ERR, fnic->lport->host, 214 "WQ[%d] error_status" 215 " %d\n", i, error_status); 216 } 217 218 for (i = 0; i < fnic->rq_count; i++) { 219 error_status = ioread32(&fnic->rq[i].ctrl->error_status); 220 if (error_status) 221 shost_printk(KERN_ERR, fnic->lport->host, 222 "RQ[%d] error_status" 223 " %d\n", i, error_status); 224 } 225 226 for (i = 0; i < fnic->wq_copy_count; i++) { 227 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status); 228 if (error_status) 229 shost_printk(KERN_ERR, fnic->lport->host, 230 "CWQ[%d] error_status" 231 " %d\n", i, error_status); 232 } 233} 234 235void fnic_handle_link_event(struct fnic *fnic) 236{ 237 unsigned long flags; 238 239 spin_lock_irqsave(&fnic->fnic_lock, flags); 240 if (fnic->stop_rx_link_events) { 241 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 242 return; 243 } 244 spin_unlock_irqrestore(&fnic->fnic_lock, flags); 245 246 queue_work(fnic_event_queue, &fnic->link_work); 247 248} 249 250static int fnic_notify_set(struct fnic *fnic) 251{ 252 int err; 253 254 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 255 case VNIC_DEV_INTR_MODE_INTX: 256 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY); 257 break; 258 case VNIC_DEV_INTR_MODE_MSI: 259 err = vnic_dev_notify_set(fnic->vdev, -1); 260 break; 261 case VNIC_DEV_INTR_MODE_MSIX: 262 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY); 263 break; 264 default: 265 shost_printk(KERN_ERR, fnic->lport->host, 266 "Interrupt mode should be set up" 267 " before devcmd notify set %d\n", 268 vnic_dev_get_intr_mode(fnic->vdev)); 269 err = -1; 270 break; 271 } 272 273 return err; 274} 275 276static void fnic_notify_timer(unsigned long data) 277{ 278 struct fnic *fnic = (struct fnic *)data; 279 280 fnic_handle_link_event(fnic); 281 mod_timer(&fnic->notify_timer, 282 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD)); 283} 284 285static void fnic_notify_timer_start(struct fnic *fnic) 286{ 287 switch (vnic_dev_get_intr_mode(fnic->vdev)) { 288 case VNIC_DEV_INTR_MODE_MSI: 289 /* 290 * Schedule first timeout immediately. The driver is 291 * initiatialized and ready to look for link up notification 292 */ 293 mod_timer(&fnic->notify_timer, jiffies); 294 break; 295 default: 296 /* Using intr for notification for INTx/MSI-X */ 297 break; 298 }; 299} 300 301static int fnic_dev_wait(struct vnic_dev *vdev, 302 int (*start)(struct vnic_dev *, int), 303 int (*finished)(struct vnic_dev *, int *), 304 int arg) 305{ 306 unsigned long time; 307 int done; 308 int err; 309 310 err = start(vdev, arg); 311 if (err) 312 return err; 313 314 /* Wait for func to complete...2 seconds max */ 315 time = jiffies + (HZ * 2); 316 do { 317 err = finished(vdev, &done); 318 if (err) 319 return err; 320 if (done) 321 return 0; 322 schedule_timeout_uninterruptible(HZ / 10); 323 } while (time_after(time, jiffies)); 324 325 return -ETIMEDOUT; 326} 327 328static int fnic_cleanup(struct fnic *fnic) 329{ 330 unsigned int i; 331 int err; 332 333 vnic_dev_disable(fnic->vdev); 334 for (i = 0; i < fnic->intr_count; i++) 335 vnic_intr_mask(&fnic->intr[i]); 336 337 for (i = 0; i < fnic->rq_count; i++) { 338 err = vnic_rq_disable(&fnic->rq[i]); 339 if (err) 340 return err; 341 } 342 for (i = 0; i < fnic->raw_wq_count; i++) { 343 err = vnic_wq_disable(&fnic->wq[i]); 344 if (err) 345 return err; 346 } 347 for (i = 0; i < fnic->wq_copy_count; i++) { 348 err = vnic_wq_copy_disable(&fnic->wq_copy[i]); 349 if (err) 350 return err; 351 } 352 353 /* Clean up completed IOs and FCS frames */ 354 fnic_wq_copy_cmpl_handler(fnic, -1); 355 fnic_wq_cmpl_handler(fnic, -1); 356 fnic_rq_cmpl_handler(fnic, -1); 357 358 /* Clean up the IOs and FCS frames that have not completed */ 359 for (i = 0; i < fnic->raw_wq_count; i++) 360 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf); 361 for (i = 0; i < fnic->rq_count; i++) 362 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf); 363 for (i = 0; i < fnic->wq_copy_count; i++) 364 vnic_wq_copy_clean(&fnic->wq_copy[i], 365 fnic_wq_copy_cleanup_handler); 366 367 for (i = 0; i < fnic->cq_count; i++) 368 vnic_cq_clean(&fnic->cq[i]); 369 for (i = 0; i < fnic->intr_count; i++) 370 vnic_intr_clean(&fnic->intr[i]); 371 372 mempool_destroy(fnic->io_req_pool); 373 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++) 374 mempool_destroy(fnic->io_sgl_pool[i]); 375 376 return 0; 377} 378 379static void fnic_iounmap(struct fnic *fnic) 380{ 381 if (fnic->bar0.vaddr) 382 iounmap(fnic->bar0.vaddr); 383} 384 385/* 386 * Allocate element for mempools requiring GFP_DMA flag. 387 * Otherwise, checks in kmem_flagcheck() hit BUG_ON(). 388 */ 389static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data) 390{ 391 struct kmem_cache *mem = pool_data; 392 393 return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA); 394} 395 396/** 397 * fnic_get_mac() - get assigned data MAC address for FIP code. 398 * @lport: local port. 399 */ 400static u8 *fnic_get_mac(struct fc_lport *lport) 401{ 402 struct fnic *fnic = lport_priv(lport); 403 404 return fnic->data_src_addr; 405} 406 407static int __devinit fnic_probe(struct pci_dev *pdev, 408 const struct pci_device_id *ent) 409{ 410 struct Scsi_Host *host; 411 struct fc_lport *lp; 412 struct fnic *fnic; 413 mempool_t *pool; 414 int err; 415 int i; 416 unsigned long flags; 417 418 /* 419 * Allocate SCSI Host and set up association between host, 420 * local port, and fnic 421 */ 422 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic)); 423 if (!lp) { 424 printk(KERN_ERR PFX "Unable to alloc libfc local port\n"); 425 err = -ENOMEM; 426 goto err_out; 427 } 428 host = lp->host; 429 fnic = lport_priv(lp); 430 fnic->lport = lp; 431 fnic->ctlr.lp = lp; 432 433 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, 434 host->host_no); 435 436 host->transportt = fnic_fc_transport; 437 438 err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ); 439 if (err) { 440 shost_printk(KERN_ERR, fnic->lport->host, 441 "Unable to alloc shared tag map\n"); 442 goto err_out_free_hba; 443 } 444 445 /* Setup PCI resources */ 446 pci_set_drvdata(pdev, fnic); 447 448 fnic->pdev = pdev; 449 450 err = pci_enable_device(pdev); 451 if (err) { 452 shost_printk(KERN_ERR, fnic->lport->host, 453 "Cannot enable PCI device, aborting.\n"); 454 goto err_out_free_hba; 455 } 456 457 err = pci_request_regions(pdev, DRV_NAME); 458 if (err) { 459 shost_printk(KERN_ERR, fnic->lport->host, 460 "Cannot enable PCI resources, aborting\n"); 461 goto err_out_disable_device; 462 } 463 464 pci_set_master(pdev); 465 466 /* Query PCI controller on system for DMA addressing 467 * limitation for the device. Try 40-bit first, and 468 * fail to 32-bit. 469 */ 470 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40)); 471 if (err) { 472 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 473 if (err) { 474 shost_printk(KERN_ERR, fnic->lport->host, 475 "No usable DMA configuration " 476 "aborting\n"); 477 goto err_out_release_regions; 478 } 479 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 480 if (err) { 481 shost_printk(KERN_ERR, fnic->lport->host, 482 "Unable to obtain 32-bit DMA " 483 "for consistent allocations, aborting.\n"); 484 goto err_out_release_regions; 485 } 486 } else { 487 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40)); 488 if (err) { 489 shost_printk(KERN_ERR, fnic->lport->host, 490 "Unable to obtain 40-bit DMA " 491 "for consistent allocations, aborting.\n"); 492 goto err_out_release_regions; 493 } 494 } 495 496 /* Map vNIC resources from BAR0 */ 497 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 498 shost_printk(KERN_ERR, fnic->lport->host, 499 "BAR0 not memory-map'able, aborting.\n"); 500 err = -ENODEV; 501 goto err_out_release_regions; 502 } 503 504 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0); 505 fnic->bar0.bus_addr = pci_resource_start(pdev, 0); 506 fnic->bar0.len = pci_resource_len(pdev, 0); 507 508 if (!fnic->bar0.vaddr) { 509 shost_printk(KERN_ERR, fnic->lport->host, 510 "Cannot memory-map BAR0 res hdr, " 511 "aborting.\n"); 512 err = -ENODEV; 513 goto err_out_release_regions; 514 } 515 516 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0); 517 if (!fnic->vdev) { 518 shost_printk(KERN_ERR, fnic->lport->host, 519 "vNIC registration failed, " 520 "aborting.\n"); 521 err = -ENODEV; 522 goto err_out_iounmap; 523 } 524 525 err = fnic_dev_wait(fnic->vdev, vnic_dev_open, 526 vnic_dev_open_done, 0); 527 if (err) { 528 shost_printk(KERN_ERR, fnic->lport->host, 529 "vNIC dev open failed, aborting.\n"); 530 goto err_out_vnic_unregister; 531 } 532 533 err = vnic_dev_init(fnic->vdev, 0); 534 if (err) { 535 shost_printk(KERN_ERR, fnic->lport->host, 536 "vNIC dev init failed, aborting.\n"); 537 goto err_out_dev_close; 538 } 539 540 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); 541 if (err) { 542 shost_printk(KERN_ERR, fnic->lport->host, 543 "vNIC get MAC addr failed \n"); 544 goto err_out_dev_close; 545 } 546 /* set data_src for point-to-point mode and to keep it non-zero */ 547 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN); 548 549 /* Get vNIC configuration */ 550 err = fnic_get_vnic_config(fnic); 551 if (err) { 552 shost_printk(KERN_ERR, fnic->lport->host, 553 "Get vNIC configuration failed, " 554 "aborting.\n"); 555 goto err_out_dev_close; 556 } 557 host->max_lun = fnic->config.luns_per_tgt; 558 host->max_id = FNIC_MAX_FCP_TARGET; 559 host->max_cmd_len = FCOE_MAX_CMD_LEN; 560 561 fnic_get_res_counts(fnic); 562 563 err = fnic_set_intr_mode(fnic); 564 if (err) { 565 shost_printk(KERN_ERR, fnic->lport->host, 566 "Failed to set intr mode, " 567 "aborting.\n"); 568 goto err_out_dev_close; 569 } 570 571 err = fnic_alloc_vnic_resources(fnic); 572 if (err) { 573 shost_printk(KERN_ERR, fnic->lport->host, 574 "Failed to alloc vNIC resources, " 575 "aborting.\n"); 576 goto err_out_clear_intr; 577 } 578 579 580 /* initialize all fnic locks */ 581 spin_lock_init(&fnic->fnic_lock); 582 583 for (i = 0; i < FNIC_WQ_MAX; i++) 584 spin_lock_init(&fnic->wq_lock[i]); 585 586 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) { 587 spin_lock_init(&fnic->wq_copy_lock[i]); 588 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK; 589 fnic->fw_ack_recd[i] = 0; 590 fnic->fw_ack_index[i] = -1; 591 } 592 593 for (i = 0; i < FNIC_IO_LOCKS; i++) 594 spin_lock_init(&fnic->io_req_lock[i]); 595 596 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache); 597 if (!fnic->io_req_pool) 598 goto err_out_free_resources; 599 600 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab, 601 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 602 if (!pool) 603 goto err_out_free_ioreq_pool; 604 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; 605 606 pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab, 607 fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 608 if (!pool) 609 goto err_out_free_dflt_pool; 610 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool; 611 612 /* setup vlan config, hw inserts vlan header */ 613 fnic->vlan_hw_insert = 1; 614 fnic->vlan_id = 0; 615 616 /* Initialize the FIP fcoe_ctrl struct */ 617 fnic->ctlr.send = fnic_eth_send; 618 fnic->ctlr.update_mac = fnic_update_mac; 619 fnic->ctlr.get_src_addr = fnic_get_mac; 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 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); 628 } else { 629 shost_printk(KERN_INFO, fnic->lport->host, 630 "firmware uses non-FIP mode\n"); 631 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); 632 } 633 fnic->state = FNIC_IN_FC_MODE; 634 635 /* Enable hardware stripping of vlan header on ingress */ 636 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1); 637 638 /* Setup notification buffer area */ 639 err = fnic_notify_set(fnic); 640 if (err) { 641 shost_printk(KERN_ERR, fnic->lport->host, 642 "Failed to alloc notify buffer, aborting.\n"); 643 goto err_out_free_max_pool; 644 } 645 646 /* Setup notify timer when using MSI interrupts */ 647 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI) 648 setup_timer(&fnic->notify_timer, 649 fnic_notify_timer, (unsigned long)fnic); 650 651 /* allocate RQ buffers and post them to RQ*/ 652 for (i = 0; i < fnic->rq_count; i++) { 653 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame); 654 if (err) { 655 shost_printk(KERN_ERR, fnic->lport->host, 656 "fnic_alloc_rq_frame can't alloc " 657 "frame\n"); 658 goto err_out_free_rq_buf; 659 } 660 } 661 662 /* 663 * Initialization done with PCI system, hardware, firmware. 664 * Add host to SCSI 665 */ 666 err = scsi_add_host(lp->host, &pdev->dev); 667 if (err) { 668 shost_printk(KERN_ERR, fnic->lport->host, 669 "fnic: scsi_add_host failed...exiting\n"); 670 goto err_out_free_rq_buf; 671 } 672 673 /* Start local port initiatialization */ 674 675 lp->link_up = 0; 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 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); 692 693 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START, 694 FCPIO_HOST_EXCH_RANGE_END, NULL)) { 695 err = -ENOMEM; 696 goto err_out_remove_scsi_host; 697 } 698 699 fc_lport_init_stats(lp); 700 701 fc_lport_config(lp); 702 703 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize + 704 sizeof(struct fc_frame_header))) { 705 err = -EINVAL; 706 goto err_out_free_exch_mgr; 707 } 708 fc_host_maxframe_size(lp->host) = lp->mfs; 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 748err_out_free_exch_mgr: 749 fc_exch_mgr_free(lp); 750err_out_remove_scsi_host: 751 fc_remove_host(lp->host); 752 scsi_remove_host(lp->host); 753err_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); 757err_out_free_max_pool: 758 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]); 759err_out_free_dflt_pool: 760 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]); 761err_out_free_ioreq_pool: 762 mempool_destroy(fnic->io_req_pool); 763err_out_free_resources: 764 fnic_free_vnic_resources(fnic); 765err_out_clear_intr: 766 fnic_clear_intr_mode(fnic); 767err_out_dev_close: 768 vnic_dev_close(fnic->vdev); 769err_out_vnic_unregister: 770 vnic_dev_unregister(fnic->vdev); 771err_out_iounmap: 772 fnic_iounmap(fnic); 773err_out_release_regions: 774 pci_release_regions(pdev); 775err_out_disable_device: 776 pci_disable_device(pdev); 777err_out_free_hba: 778 scsi_host_put(lp->host); 779err_out: 780 return err; 781} 782 783static void __devexit 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 854static struct pci_driver fnic_driver = { 855 .name = DRV_NAME, 856 .id_table = fnic_id_table, 857 .probe = fnic_probe, 858 .remove = __devexit_p(fnic_remove), 859}; 860 861static 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 /* Create a cache for allocation of default size sgls */ 869 len = sizeof(struct fnic_dflt_sgl_list); 870 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create 871 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 872 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, 873 NULL); 874 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) { 875 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n"); 876 err = -ENOMEM; 877 goto err_create_fnic_sgl_slab_dflt; 878 } 879 880 /* Create a cache for allocation of max size sgls*/ 881 len = sizeof(struct fnic_sgl_list); 882 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create 883 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN, 884 SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA, 885 NULL); 886 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) { 887 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n"); 888 err = -ENOMEM; 889 goto err_create_fnic_sgl_slab_max; 890 } 891 892 /* Create a cache of io_req structs for use via mempool */ 893 fnic_io_req_cache = kmem_cache_create("fnic_io_req", 894 sizeof(struct fnic_io_req), 895 0, SLAB_HWCACHE_ALIGN, NULL); 896 if (!fnic_io_req_cache) { 897 printk(KERN_ERR PFX "failed to create fnic io_req slab\n"); 898 err = -ENOMEM; 899 goto err_create_fnic_ioreq_slab; 900 } 901 902 fnic_event_queue = create_singlethread_workqueue("fnic_event_wq"); 903 if (!fnic_event_queue) { 904 printk(KERN_ERR PFX "fnic work queue create failed\n"); 905 err = -ENOMEM; 906 goto err_create_fnic_workq; 907 } 908 909 spin_lock_init(&fnic_list_lock); 910 INIT_LIST_HEAD(&fnic_list); 911 912 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions); 913 if (!fnic_fc_transport) { 914 printk(KERN_ERR PFX "fc_attach_transport error\n"); 915 err = -ENOMEM; 916 goto err_fc_transport; 917 } 918 919 /* register the driver with PCI system */ 920 err = pci_register_driver(&fnic_driver); 921 if (err < 0) { 922 printk(KERN_ERR PFX "pci register error\n"); 923 goto err_pci_register; 924 } 925 return err; 926 927err_pci_register: 928 fc_release_transport(fnic_fc_transport); 929err_fc_transport: 930 destroy_workqueue(fnic_event_queue); 931err_create_fnic_workq: 932 kmem_cache_destroy(fnic_io_req_cache); 933err_create_fnic_ioreq_slab: 934 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 935err_create_fnic_sgl_slab_max: 936 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 937err_create_fnic_sgl_slab_dflt: 938 return err; 939} 940 941static void __exit fnic_cleanup_module(void) 942{ 943 pci_unregister_driver(&fnic_driver); 944 destroy_workqueue(fnic_event_queue); 945 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); 946 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); 947 kmem_cache_destroy(fnic_io_req_cache); 948 fc_release_transport(fnic_fc_transport); 949} 950 951module_init(fnic_init_module); 952module_exit(fnic_cleanup_module); 953