drivers/scsi/fnic/fnic_main.c

   1 /*
   2  * Copyright 2008 Cisco Systems, Inc.  All rights reserved.
   3  * Copyright 2007 Nuova Systems, Inc.  All rights reserved.
   4  *
   5  * This program is free software; you may redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  10  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  11  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  12  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  13  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  14  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  15  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  16  * SOFTWARE.
  17  */
  18 #include <linux/module.h>
  19 #include <linux/mempool.h>
  20 #include <linux/string.h>
  21 #include <linux/slab.h>
  22 #include <linux/errno.h>
  23 #include <linux/init.h>
  24 #include <linux/pci.h>
  25 #include <linux/skbuff.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/spinlock.h>
  28 #include <linux/workqueue.h>
  29 #include <linux/if_ether.h>
  30 #include <scsi/fc/fc_fip.h>
  31 #include <scsi/scsi_host.h>
  32 #include <scsi/scsi_transport.h>
  33 #include <scsi/scsi_transport_fc.h>
  34 #include <scsi/scsi_tcq.h>
  35 #include <scsi/libfc.h>
  36 #include <scsi/fc_frame.h>
  37
  38 #include "vnic_dev.h"
  39 #include "vnic_intr.h"
  40 #include "vnic_stats.h"
  41 #include "fnic_io.h"
  42 #include "fnic.h"
  43
  44 #define PCI_DEVICE_ID_CISCO_FNIC        0x0045
  45
  46 /* Timer to poll notification area for events. Used for MSI interrupts */
  47 #define FNIC_NOTIFY_TIMER_PERIOD        (2 * HZ)
  48
  49 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
  50 static struct kmem_cache *fnic_io_req_cache;
  51 LIST_HEAD(fnic_list);
  52 DEFINE_SPINLOCK(fnic_list_lock);
  53
  54 /* Supported devices by fnic module */
  55 static struct pci_device_id fnic_id_table[] = {
  56         { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
  57         { 0, }
  58 };
  59
  60 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  61 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
  62               "Joseph R. Eykholt <jeykholt@cisco.com>");
  63 MODULE_LICENSE("GPL v2");
  64 MODULE_VERSION(DRV_VERSION);
  65 MODULE_DEVICE_TABLE(pci, fnic_id_table);
  66
  67 unsigned int fnic_log_level;
  68 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
  69 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
  70
  71
  72 static struct libfc_function_template fnic_transport_template = {
  73         .frame_send = fnic_send,
  74         .lport_set_port_id = fnic_set_port_id,
  75         .fcp_abort_io = fnic_empty_scsi_cleanup,
  76         .fcp_cleanup = fnic_empty_scsi_cleanup,
  77         .exch_mgr_reset = fnic_exch_mgr_reset
  78 };
  79
  80 static int fnic_slave_alloc(struct scsi_device *sdev)
  81 {
  82         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
  83
  84         sdev->tagged_supported = 1;
  85
  86         if (!rport || fc_remote_port_chkready(rport))
  87                 return -ENXIO;
  88
  89         scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
  90         return 0;
  91 }
  92
  93 static struct scsi_host_template fnic_host_template = {
  94         .module = THIS_MODULE,
  95         .name = DRV_NAME,
  96         .queuecommand = fnic_queuecommand,
  97         .eh_abort_handler = fnic_abort_cmd,
  98         .eh_device_reset_handler = fnic_device_reset,
  99         .eh_host_reset_handler = fnic_host_reset,
 100         .slave_alloc = fnic_slave_alloc,
 101         .change_queue_depth = fc_change_queue_depth,
 102         .change_queue_type = fc_change_queue_type,
 103         .this_id = -1,
 104         .cmd_per_lun = 3,
 105         .can_queue = FNIC_MAX_IO_REQ,
 106         .use_clustering = ENABLE_CLUSTERING,
 107         .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
 108         .max_sectors = 0xffff,
 109         .shost_attrs = fnic_attrs,
 110 };
 111
 112 static void
 113 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
 114 {
 115         if (timeout)
 116                 rport->dev_loss_tmo = timeout;
 117         else
 118                 rport->dev_loss_tmo = 1;
 119 }
 120
 121 static void fnic_get_host_speed(struct Scsi_Host *shost);
 122 static struct scsi_transport_template *fnic_fc_transport;
 123 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
 124
 125 static struct fc_function_template fnic_fc_functions = {
 126
 127         .show_host_node_name = 1,
 128         .show_host_port_name = 1,
 129         .show_host_supported_classes = 1,
 130         .show_host_supported_fc4s = 1,
 131         .show_host_active_fc4s = 1,
 132         .show_host_maxframe_size = 1,
 133         .show_host_port_id = 1,
 134         .show_host_supported_speeds = 1,
 135         .get_host_speed = fnic_get_host_speed,
 136         .show_host_speed = 1,
 137         .show_host_port_type = 1,
 138         .get_host_port_state = fc_get_host_port_state,
 139         .show_host_port_state = 1,
 140         .show_host_symbolic_name = 1,
 141         .show_rport_maxframe_size = 1,
 142         .show_rport_supported_classes = 1,
 143         .show_host_fabric_name = 1,
 144         .show_starget_node_name = 1,
 145         .show_starget_port_name = 1,
 146         .show_starget_port_id = 1,
 147         .show_rport_dev_loss_tmo = 1,
 148         .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
 149         .issue_fc_host_lip = fnic_reset,
 150         .get_fc_host_stats = fnic_get_stats,
 151         .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
 152         .terminate_rport_io = fnic_terminate_rport_io,
 153         .bsg_request = fc_lport_bsg_request,
 154 };
 155
 156 static void fnic_get_host_speed(struct Scsi_Host *shost)
 157 {
 158         struct fc_lport *lp = shost_priv(shost);
 159         struct fnic *fnic = lport_priv(lp);
 160         u32 port_speed = vnic_dev_port_speed(fnic->vdev);
 161
 162         /* Add in other values as they get defined in fw */
 163         switch (port_speed) {
 164         case 10000:
 165                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
 166                 break;
 167         default:
 168                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
 169                 break;
 170         }
 171 }
 172
 173 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
 174 {
 175         int ret;
 176         struct fc_lport *lp = shost_priv(host);
 177         struct fnic *fnic = lport_priv(lp);
 178         struct fc_host_statistics *stats = &lp->host_stats;
 179         struct vnic_stats *vs;
 180         unsigned long flags;
 181
 182         if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
 183                 return stats;
 184         fnic->stats_time = jiffies;
 185
 186         spin_lock_irqsave(&fnic->fnic_lock, flags);
 187         ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
 188         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 189
 190         if (ret) {
 191                 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
 192                               "fnic: Get vnic stats failed"
 193                               " 0x%x", ret);
 194                 return stats;
 195         }
 196         vs = fnic->stats;
 197         stats->tx_frames = vs->tx.tx_unicast_frames_ok;
 198         stats->tx_words  = vs->tx.tx_unicast_bytes_ok / 4;
 199         stats->rx_frames = vs->rx.rx_unicast_frames_ok;
 200         stats->rx_words  = vs->rx.rx_unicast_bytes_ok / 4;
 201         stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
 202         stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
 203         stats->invalid_crc_count = vs->rx.rx_crc_errors;
 204         stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
 205         stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
 206         stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
 207
 208         return stats;
 209 }
 210
 211 void fnic_log_q_error(struct fnic *fnic)
 212 {
 213         unsigned int i;
 214         u32 error_status;
 215
 216         for (i = 0; i < fnic->raw_wq_count; i++) {
 217                 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
 218                 if (error_status)
 219                         shost_printk(KERN_ERR, fnic->lport->host,
 220                                      "WQ[%d] error_status"
 221                                      " %d\n", i, error_status);
 222         }
 223
 224         for (i = 0; i < fnic->rq_count; i++) {
 225                 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
 226                 if (error_status)
 227                         shost_printk(KERN_ERR, fnic->lport->host,
 228                                      "RQ[%d] error_status"
 229                                      " %d\n", i, error_status);
 230         }
 231
 232         for (i = 0; i < fnic->wq_copy_count; i++) {
 233                 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
 234                 if (error_status)
 235                         shost_printk(KERN_ERR, fnic->lport->host,
 236                                      "CWQ[%d] error_status"
 237                                      " %d\n", i, error_status);
 238         }
 239 }
 240
 241 void fnic_handle_link_event(struct fnic *fnic)
 242 {
 243         unsigned long flags;
 244
 245         spin_lock_irqsave(&fnic->fnic_lock, flags);
 246         if (fnic->stop_rx_link_events) {
 247                 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 248                 return;
 249         }
 250         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 251
 252         queue_work(fnic_event_queue, &fnic->link_work);
 253
 254 }
 255
 256 static int fnic_notify_set(struct fnic *fnic)
 257 {
 258         int err;
 259
 260         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
 261         case VNIC_DEV_INTR_MODE_INTX:
 262                 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
 263                 break;
 264         case VNIC_DEV_INTR_MODE_MSI:
 265                 err = vnic_dev_notify_set(fnic->vdev, -1);
 266                 break;
 267         case VNIC_DEV_INTR_MODE_MSIX:
 268                 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
 269                 break;
 270         default:
 271                 shost_printk(KERN_ERR, fnic->lport->host,
 272                              "Interrupt mode should be set up"
 273                              " before devcmd notify set %d\n",
 274                              vnic_dev_get_intr_mode(fnic->vdev));
 275                 err = -1;
 276                 break;
 277         }
 278
 279         return err;
 280 }
 281
 282 static void fnic_notify_timer(unsigned long data)
 283 {
 284         struct fnic *fnic = (struct fnic *)data;
 285
 286         fnic_handle_link_event(fnic);
 287         mod_timer(&fnic->notify_timer,
 288                   round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
 289 }
 290
 291 static void fnic_notify_timer_start(struct fnic *fnic)
 292 {
 293         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
 294         case VNIC_DEV_INTR_MODE_MSI:
 295                 /*
 296                  * Schedule first timeout immediately. The driver is
 297                  * initiatialized and ready to look for link up notification
 298                  */
 299                 mod_timer(&fnic->notify_timer, jiffies);
 300                 break;
 301         default:
 302                 /* Using intr for notification for INTx/MSI-X */
 303                 break;
 304         };
 305 }
 306
 307 static int fnic_dev_wait(struct vnic_dev *vdev,
 308                          int (*start)(struct vnic_dev *, int),
 309                          int (*finished)(struct vnic_dev *, int *),
 310                          int arg)
 311 {
 312         unsigned long time;
 313         int done;
 314         int err;
 315
 316         err = start(vdev, arg);
 317         if (err)
 318                 return err;
 319
 320         /* Wait for func to complete...2 seconds max */
 321         time = jiffies + (HZ * 2);
 322         do {
 323                 err = finished(vdev, &done);
 324                 if (err)
 325                         return err;
 326                 if (done)
 327                         return 0;
 328                 schedule_timeout_uninterruptible(HZ / 10);
 329         } while (time_after(time, jiffies));
 330
 331         return -ETIMEDOUT;
 332 }
 333
 334 static int fnic_cleanup(struct fnic *fnic)
 335 {
 336         unsigned int i;
 337         int err;
 338
 339         vnic_dev_disable(fnic->vdev);
 340         for (i = 0; i < fnic->intr_count; i++)
 341                 vnic_intr_mask(&fnic->intr[i]);
 342
 343         for (i = 0; i < fnic->rq_count; i++) {
 344                 err = vnic_rq_disable(&fnic->rq[i]);
 345                 if (err)
 346                         return err;
 347         }
 348         for (i = 0; i < fnic->raw_wq_count; i++) {
 349                 err = vnic_wq_disable(&fnic->wq[i]);
 350                 if (err)
 351                         return err;
 352         }
 353         for (i = 0; i < fnic->wq_copy_count; i++) {
 354                 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
 355                 if (err)
 356                         return err;
 357         }
 358
 359         /* Clean up completed IOs and FCS frames */
 360         fnic_wq_copy_cmpl_handler(fnic, -1);
 361         fnic_wq_cmpl_handler(fnic, -1);
 362         fnic_rq_cmpl_handler(fnic, -1);
 363
 364         /* Clean up the IOs and FCS frames that have not completed */
 365         for (i = 0; i < fnic->raw_wq_count; i++)
 366                 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
 367         for (i = 0; i < fnic->rq_count; i++)
 368                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
 369         for (i = 0; i < fnic->wq_copy_count; i++)
 370                 vnic_wq_copy_clean(&fnic->wq_copy[i],
 371                                    fnic_wq_copy_cleanup_handler);
 372
 373         for (i = 0; i < fnic->cq_count; i++)
 374                 vnic_cq_clean(&fnic->cq[i]);
 375         for (i = 0; i < fnic->intr_count; i++)
 376                 vnic_intr_clean(&fnic->intr[i]);
 377
 378         mempool_destroy(fnic->io_req_pool);
 379         for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
 380                 mempool_destroy(fnic->io_sgl_pool[i]);
 381
 382         return 0;
 383 }
 384
 385 static void fnic_iounmap(struct fnic *fnic)
 386 {
 387         if (fnic->bar0.vaddr)
 388                 iounmap(fnic->bar0.vaddr);
 389 }
 390
 391 /*
 392  * Allocate element for mempools requiring GFP_DMA flag.
 393  * Otherwise, checks in kmem_flagcheck() hit BUG_ON().
 394  */
 395 static void *fnic_alloc_slab_dma(gfp_t gfp_mask, void *pool_data)
 396 {
 397         struct kmem_cache *mem = pool_data;
 398
 399         return kmem_cache_alloc(mem, gfp_mask | GFP_ATOMIC | GFP_DMA);
 400 }
 401
 402 /**
 403  * fnic_get_mac() - get assigned data MAC address for FIP code.
 404  * @lport:      local port.
 405  */
 406 static u8 *fnic_get_mac(struct fc_lport *lport)
 407 {
 408         struct fnic *fnic = lport_priv(lport);
 409
 410         return fnic->data_src_addr;
 411 }
 412
 413 static int __devinit fnic_probe(struct pci_dev *pdev,
 414                                 const struct pci_device_id *ent)
 415 {
 416         struct Scsi_Host *host;
 417         struct fc_lport *lp;
 418         struct fnic *fnic;
 419         mempool_t *pool;
 420         int err;
 421         int i;
 422         unsigned long flags;
 423
 424         /*
 425          * Allocate SCSI Host and set up association between host,
 426          * local port, and fnic
 427          */
 428         lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
 429         if (!lp) {
 430                 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
 431                 err = -ENOMEM;
 432                 goto err_out;
 433         }
 434         host = lp->host;
 435         fnic = lport_priv(lp);
 436         fnic->lport = lp;
 437         fnic->ctlr.lp = lp;
 438
 439         snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
 440                  host->host_no);
 441
 442         host->transportt = fnic_fc_transport;
 443
 444         err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
 445         if (err) {
 446                 shost_printk(KERN_ERR, fnic->lport->host,
 447                              "Unable to alloc shared tag map\n");
 448                 goto err_out_free_hba;
 449         }
 450
 451         /* Setup PCI resources */
 452         pci_set_drvdata(pdev, fnic);
 453
 454         fnic->pdev = pdev;
 455
 456         err = pci_enable_device(pdev);
 457         if (err) {
 458                 shost_printk(KERN_ERR, fnic->lport->host,
 459                              "Cannot enable PCI device, aborting.\n");
 460                 goto err_out_free_hba;
 461         }
 462
 463         err = pci_request_regions(pdev, DRV_NAME);
 464         if (err) {
 465                 shost_printk(KERN_ERR, fnic->lport->host,
 466                              "Cannot enable PCI resources, aborting\n");
 467                 goto err_out_disable_device;
 468         }
 469
 470         pci_set_master(pdev);
 471
 472         /* Query PCI controller on system for DMA addressing
 473          * limitation for the device.  Try 40-bit first, and
 474          * fail to 32-bit.
 475          */
 476         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
 477         if (err) {
 478                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 479                 if (err) {
 480                         shost_printk(KERN_ERR, fnic->lport->host,
 481                                      "No usable DMA configuration "
 482                                      "aborting\n");
 483                         goto err_out_release_regions;
 484                 }
 485                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 486                 if (err) {
 487                         shost_printk(KERN_ERR, fnic->lport->host,
 488                                      "Unable to obtain 32-bit DMA "
 489                                      "for consistent allocations, aborting.\n");
 490                         goto err_out_release_regions;
 491                 }
 492         } else {
 493                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
 494                 if (err) {
 495                         shost_printk(KERN_ERR, fnic->lport->host,
 496                                      "Unable to obtain 40-bit DMA "
 497                                      "for consistent allocations, aborting.\n");
 498                         goto err_out_release_regions;
 499                 }
 500         }
 501
 502         /* Map vNIC resources from BAR0 */
 503         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 504                 shost_printk(KERN_ERR, fnic->lport->host,
 505                              "BAR0 not memory-map'able, aborting.\n");
 506                 err = -ENODEV;
 507                 goto err_out_release_regions;
 508         }
 509
 510         fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
 511         fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
 512         fnic->bar0.len = pci_resource_len(pdev, 0);
 513
 514         if (!fnic->bar0.vaddr) {
 515                 shost_printk(KERN_ERR, fnic->lport->host,
 516                              "Cannot memory-map BAR0 res hdr, "
 517                              "aborting.\n");
 518                 err = -ENODEV;
 519                 goto err_out_release_regions;
 520         }
 521
 522         fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
 523         if (!fnic->vdev) {
 524                 shost_printk(KERN_ERR, fnic->lport->host,
 525                              "vNIC registration failed, "
 526                              "aborting.\n");
 527                 err = -ENODEV;
 528                 goto err_out_iounmap;
 529         }
 530
 531         err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
 532                             vnic_dev_open_done, 0);
 533         if (err) {
 534                 shost_printk(KERN_ERR, fnic->lport->host,
 535                              "vNIC dev open failed, aborting.\n");
 536                 goto err_out_vnic_unregister;
 537         }
 538
 539         err = vnic_dev_init(fnic->vdev, 0);
 540         if (err) {
 541                 shost_printk(KERN_ERR, fnic->lport->host,
 542                              "vNIC dev init failed, aborting.\n");
 543                 goto err_out_dev_close;
 544         }
 545
 546         err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
 547         if (err) {
 548                 shost_printk(KERN_ERR, fnic->lport->host,
 549                              "vNIC get MAC addr failed \n");
 550                 goto err_out_dev_close;
 551         }
 552         /* set data_src for point-to-point mode and to keep it non-zero */
 553         memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
 554
 555         /* Get vNIC configuration */
 556         err = fnic_get_vnic_config(fnic);
 557         if (err) {
 558                 shost_printk(KERN_ERR, fnic->lport->host,
 559                              "Get vNIC configuration failed, "
 560                              "aborting.\n");
 561                 goto err_out_dev_close;
 562         }
 563         host->max_lun = fnic->config.luns_per_tgt;
 564         host->max_id = FNIC_MAX_FCP_TARGET;
 565         host->max_cmd_len = FCOE_MAX_CMD_LEN;
 566
 567         fnic_get_res_counts(fnic);
 568
 569         err = fnic_set_intr_mode(fnic);
 570         if (err) {
 571                 shost_printk(KERN_ERR, fnic->lport->host,
 572                              "Failed to set intr mode, "
 573                              "aborting.\n");
 574                 goto err_out_dev_close;
 575         }
 576
 577         err = fnic_alloc_vnic_resources(fnic);
 578         if (err) {
 579                 shost_printk(KERN_ERR, fnic->lport->host,
 580                              "Failed to alloc vNIC resources, "
 581                              "aborting.\n");
 582                 goto err_out_clear_intr;
 583         }
 584
 585
 586         /* initialize all fnic locks */
 587         spin_lock_init(&fnic->fnic_lock);
 588
 589         for (i = 0; i < FNIC_WQ_MAX; i++)
 590                 spin_lock_init(&fnic->wq_lock[i]);
 591
 592         for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
 593                 spin_lock_init(&fnic->wq_copy_lock[i]);
 594                 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
 595                 fnic->fw_ack_recd[i] = 0;
 596                 fnic->fw_ack_index[i] = -1;
 597         }
 598
 599         for (i = 0; i < FNIC_IO_LOCKS; i++)
 600                 spin_lock_init(&fnic->io_req_lock[i]);
 601
 602         fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
 603         if (!fnic->io_req_pool)
 604                 goto err_out_free_resources;
 605
 606         pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
 607                               fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 608         if (!pool)
 609                 goto err_out_free_ioreq_pool;
 610         fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
 611
 612         pool = mempool_create(2, fnic_alloc_slab_dma, mempool_free_slab,
 613                               fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 614         if (!pool)
 615                 goto err_out_free_dflt_pool;
 616         fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
 617
 618         /* setup vlan config, hw inserts vlan header */
 619         fnic->vlan_hw_insert = 1;
 620         fnic->vlan_id = 0;
 621
 622         /* Initialize the FIP fcoe_ctrl struct */
 623         fnic->ctlr.send = fnic_eth_send;
 624         fnic->ctlr.update_mac = fnic_update_mac;
 625         fnic->ctlr.get_src_addr = fnic_get_mac;
 626         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
 627                 shost_printk(KERN_INFO, fnic->lport->host,
 628                              "firmware supports FIP\n");
 629                 /* enable directed and multicast */
 630                 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
 631                 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
 632                 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
 633                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
 634         } else {
 635                 shost_printk(KERN_INFO, fnic->lport->host,
 636                              "firmware uses non-FIP mode\n");
 637                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
 638         }
 639         fnic->state = FNIC_IN_FC_MODE;
 640
 641         /* Enable hardware stripping of vlan header on ingress */
 642         fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
 643
 644         /* Setup notification buffer area */
 645         err = fnic_notify_set(fnic);
 646         if (err) {
 647                 shost_printk(KERN_ERR, fnic->lport->host,
 648                              "Failed to alloc notify buffer, aborting.\n");
 649                 goto err_out_free_max_pool;
 650         }
 651
 652         /* Setup notify timer when using MSI interrupts */
 653         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
 654                 setup_timer(&fnic->notify_timer,
 655                             fnic_notify_timer, (unsigned long)fnic);
 656
 657         /* allocate RQ buffers and post them to RQ*/
 658         for (i = 0; i < fnic->rq_count; i++) {
 659                 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
 660                 if (err) {
 661                         shost_printk(KERN_ERR, fnic->lport->host,
 662                                      "fnic_alloc_rq_frame can't alloc "
 663                                      "frame\n");
 664                         goto err_out_free_rq_buf;
 665                 }
 666         }
 667
 668         /*
 669          * Initialization done with PCI system, hardware, firmware.
 670          * Add host to SCSI
 671          */
 672         err = scsi_add_host(lp->host, &pdev->dev);
 673         if (err) {
 674                 shost_printk(KERN_ERR, fnic->lport->host,
 675                              "fnic: scsi_add_host failed...exiting\n");
 676                 goto err_out_free_rq_buf;
 677         }
 678
 679         /* Start local port initiatialization */
 680
 681         lp->link_up = 0;
 682
 683         lp->max_retry_count = fnic->config.flogi_retries;
 684         lp->max_rport_retry_count = fnic->config.plogi_retries;
 685         lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 686                               FCP_SPPF_CONF_COMPL);
 687         if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
 688                 lp->service_params |= FCP_SPPF_RETRY;
 689
 690         lp->boot_time = jiffies;
 691         lp->e_d_tov = fnic->config.ed_tov;
 692         lp->r_a_tov = fnic->config.ra_tov;
 693         lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
 694         fc_set_wwnn(lp, fnic->config.node_wwn);
 695         fc_set_wwpn(lp, fnic->config.port_wwn);
 696
 697         fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
 698
 699         if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
 700                                FCPIO_HOST_EXCH_RANGE_END, NULL)) {
 701                 err = -ENOMEM;
 702                 goto err_out_remove_scsi_host;
 703         }
 704
 705         fc_lport_init_stats(lp);
 706
 707         fc_lport_config(lp);
 708
 709         if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
 710                        sizeof(struct fc_frame_header))) {
 711                 err = -EINVAL;
 712                 goto err_out_free_exch_mgr;
 713         }
 714         fc_host_maxframe_size(lp->host) = lp->mfs;
 715         fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
 716
 717         sprintf(fc_host_symbolic_name(lp->host),
 718                 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
 719
 720         spin_lock_irqsave(&fnic_list_lock, flags);
 721         list_add_tail(&fnic->list, &fnic_list);
 722         spin_unlock_irqrestore(&fnic_list_lock, flags);
 723
 724         INIT_WORK(&fnic->link_work, fnic_handle_link);
 725         INIT_WORK(&fnic->frame_work, fnic_handle_frame);
 726         skb_queue_head_init(&fnic->frame_queue);
 727         skb_queue_head_init(&fnic->tx_queue);
 728
 729         /* Enable all queues */
 730         for (i = 0; i < fnic->raw_wq_count; i++)
 731                 vnic_wq_enable(&fnic->wq[i]);
 732         for (i = 0; i < fnic->rq_count; i++)
 733                 vnic_rq_enable(&fnic->rq[i]);
 734         for (i = 0; i < fnic->wq_copy_count; i++)
 735                 vnic_wq_copy_enable(&fnic->wq_copy[i]);
 736
 737         fc_fabric_login(lp);
 738
 739         vnic_dev_enable(fnic->vdev);
 740
 741         err = fnic_request_intr(fnic);
 742         if (err) {
 743                 shost_printk(KERN_ERR, fnic->lport->host,
 744                              "Unable to request irq.\n");
 745                 goto err_out_free_exch_mgr;
 746         }
 747
 748         for (i = 0; i < fnic->intr_count; i++)
 749                 vnic_intr_unmask(&fnic->intr[i]);
 750
 751         fnic_notify_timer_start(fnic);
 752
 753         return 0;
 754
 755 err_out_free_exch_mgr:
 756         fc_exch_mgr_free(lp);
 757 err_out_remove_scsi_host:
 758         fc_remove_host(lp->host);
 759         scsi_remove_host(lp->host);
 760 err_out_free_rq_buf:
 761         for (i = 0; i < fnic->rq_count; i++)
 762                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
 763         vnic_dev_notify_unset(fnic->vdev);
 764 err_out_free_max_pool:
 765         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
 766 err_out_free_dflt_pool:
 767         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
 768 err_out_free_ioreq_pool:
 769         mempool_destroy(fnic->io_req_pool);
 770 err_out_free_resources:
 771         fnic_free_vnic_resources(fnic);
 772 err_out_clear_intr:
 773         fnic_clear_intr_mode(fnic);
 774 err_out_dev_close:
 775         vnic_dev_close(fnic->vdev);
 776 err_out_vnic_unregister:
 777         vnic_dev_unregister(fnic->vdev);
 778 err_out_iounmap:
 779         fnic_iounmap(fnic);
 780 err_out_release_regions:
 781         pci_release_regions(pdev);
 782 err_out_disable_device:
 783         pci_disable_device(pdev);
 784 err_out_free_hba:
 785         scsi_host_put(lp->host);
 786 err_out:
 787         return err;
 788 }
 789
 790 static void __devexit fnic_remove(struct pci_dev *pdev)
 791 {
 792         struct fnic *fnic = pci_get_drvdata(pdev);
 793         struct fc_lport *lp = fnic->lport;
 794         unsigned long flags;
 795
 796         /*
 797          * Mark state so that the workqueue thread stops forwarding
 798          * received frames and link events to the local port. ISR and
 799          * other threads that can queue work items will also stop
 800          * creating work items on the fnic workqueue
 801          */
 802         spin_lock_irqsave(&fnic->fnic_lock, flags);
 803         fnic->stop_rx_link_events = 1;
 804         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 805
 806         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
 807                 del_timer_sync(&fnic->notify_timer);
 808
 809         /*
 810          * Flush the fnic event queue. After this call, there should
 811          * be no event queued for this fnic device in the workqueue
 812          */
 813         flush_workqueue(fnic_event_queue);
 814         skb_queue_purge(&fnic->frame_queue);
 815         skb_queue_purge(&fnic->tx_queue);
 816
 817         /*
 818          * Log off the fabric. This stops all remote ports, dns port,
 819          * logs off the fabric. This flushes all rport, disc, lport work
 820          * before returning
 821          */
 822         fc_fabric_logoff(fnic->lport);
 823
 824         spin_lock_irqsave(&fnic->fnic_lock, flags);
 825         fnic->in_remove = 1;
 826         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 827
 828         fcoe_ctlr_destroy(&fnic->ctlr);
 829         fc_lport_destroy(lp);
 830
 831         /*
 832          * This stops the fnic device, masks all interrupts. Completed
 833          * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
 834          * cleaned up
 835          */
 836         fnic_cleanup(fnic);
 837
 838         BUG_ON(!skb_queue_empty(&fnic->frame_queue));
 839         BUG_ON(!skb_queue_empty(&fnic->tx_queue));
 840
 841         spin_lock_irqsave(&fnic_list_lock, flags);
 842         list_del(&fnic->list);
 843         spin_unlock_irqrestore(&fnic_list_lock, flags);
 844
 845         fc_remove_host(fnic->lport->host);
 846         scsi_remove_host(fnic->lport->host);
 847         fc_exch_mgr_free(fnic->lport);
 848         vnic_dev_notify_unset(fnic->vdev);
 849         fnic_free_intr(fnic);
 850         fnic_free_vnic_resources(fnic);
 851         fnic_clear_intr_mode(fnic);
 852         vnic_dev_close(fnic->vdev);
 853         vnic_dev_unregister(fnic->vdev);
 854         fnic_iounmap(fnic);
 855         pci_release_regions(pdev);
 856         pci_disable_device(pdev);
 857         pci_set_drvdata(pdev, NULL);
 858         scsi_host_put(lp->host);
 859 }
 860
 861 static struct pci_driver fnic_driver = {
 862         .name = DRV_NAME,
 863         .id_table = fnic_id_table,
 864         .probe = fnic_probe,
 865         .remove = __devexit_p(fnic_remove),
 866 };
 867
 868 static int __init fnic_init_module(void)
 869 {
 870         size_t len;
 871         int err = 0;
 872
 873         printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
 874
 875         /* Create a cache for allocation of default size sgls */
 876         len = sizeof(struct fnic_dflt_sgl_list);
 877         fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
 878                 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
 879                  SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
 880                  NULL);
 881         if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
 882                 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
 883                 err = -ENOMEM;
 884                 goto err_create_fnic_sgl_slab_dflt;
 885         }
 886
 887         /* Create a cache for allocation of max size sgls*/
 888         len = sizeof(struct fnic_sgl_list);
 889         fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
 890                 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
 891                  SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA,
 892                  NULL);
 893         if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
 894                 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
 895                 err = -ENOMEM;
 896                 goto err_create_fnic_sgl_slab_max;
 897         }
 898
 899         /* Create a cache of io_req structs for use via mempool */
 900         fnic_io_req_cache = kmem_cache_create("fnic_io_req",
 901                                               sizeof(struct fnic_io_req),
 902                                               0, SLAB_HWCACHE_ALIGN, NULL);
 903         if (!fnic_io_req_cache) {
 904                 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
 905                 err = -ENOMEM;
 906                 goto err_create_fnic_ioreq_slab;
 907         }
 908
 909         fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
 910         if (!fnic_event_queue) {
 911                 printk(KERN_ERR PFX "fnic work queue create failed\n");
 912                 err = -ENOMEM;
 913                 goto err_create_fnic_workq;
 914         }
 915
 916         spin_lock_init(&fnic_list_lock);
 917         INIT_LIST_HEAD(&fnic_list);
 918
 919         fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
 920         if (!fnic_fc_transport) {
 921                 printk(KERN_ERR PFX "fc_attach_transport error\n");
 922                 err = -ENOMEM;
 923                 goto err_fc_transport;
 924         }
 925
 926         /* register the driver with PCI system */
 927         err = pci_register_driver(&fnic_driver);
 928         if (err < 0) {
 929                 printk(KERN_ERR PFX "pci register error\n");
 930                 goto err_pci_register;
 931         }
 932         return err;
 933
 934 err_pci_register:
 935         fc_release_transport(fnic_fc_transport);
 936 err_fc_transport:
 937         destroy_workqueue(fnic_event_queue);
 938 err_create_fnic_workq:
 939         kmem_cache_destroy(fnic_io_req_cache);
 940 err_create_fnic_ioreq_slab:
 941         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 942 err_create_fnic_sgl_slab_max:
 943         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 944 err_create_fnic_sgl_slab_dflt:
 945         return err;
 946 }
 947
 948 static void __exit fnic_cleanup_module(void)
 949 {
 950         pci_unregister_driver(&fnic_driver);
 951         destroy_workqueue(fnic_event_queue);
 952         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 953         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 954         kmem_cache_destroy(fnic_io_req_cache);
 955         fc_release_transport(fnic_fc_transport);
 956 }
 957
 958 module_init(fnic_init_module);
 959 module_exit(fnic_cleanup_module);
 960