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  * fnic_get_mac() - get assigned data MAC address for FIP code.
 393  * @lport:      local port.
 394  */
 395 static u8 *fnic_get_mac(struct fc_lport *lport)
 396 {
 397         struct fnic *fnic = lport_priv(lport);
 398
 399         return fnic->data_src_addr;
 400 }
 401
 402 static int __devinit fnic_probe(struct pci_dev *pdev,
 403                                 const struct pci_device_id *ent)
 404 {
 405         struct Scsi_Host *host;
 406         struct fc_lport *lp;
 407         struct fnic *fnic;
 408         mempool_t *pool;
 409         int err;
 410         int i;
 411         unsigned long flags;
 412
 413         /*
 414          * Allocate SCSI Host and set up association between host,
 415          * local port, and fnic
 416          */
 417         lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
 418         if (!lp) {
 419                 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
 420                 err = -ENOMEM;
 421                 goto err_out;
 422         }
 423         host = lp->host;
 424         fnic = lport_priv(lp);
 425         fnic->lport = lp;
 426         fnic->ctlr.lp = lp;
 427
 428         snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
 429                  host->host_no);
 430
 431         host->transportt = fnic_fc_transport;
 432
 433         err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
 434         if (err) {
 435                 shost_printk(KERN_ERR, fnic->lport->host,
 436                              "Unable to alloc shared tag map\n");
 437                 goto err_out_free_hba;
 438         }
 439
 440         /* Setup PCI resources */
 441         pci_set_drvdata(pdev, fnic);
 442
 443         fnic->pdev = pdev;
 444
 445         err = pci_enable_device(pdev);
 446         if (err) {
 447                 shost_printk(KERN_ERR, fnic->lport->host,
 448                              "Cannot enable PCI device, aborting.\n");
 449                 goto err_out_free_hba;
 450         }
 451
 452         err = pci_request_regions(pdev, DRV_NAME);
 453         if (err) {
 454                 shost_printk(KERN_ERR, fnic->lport->host,
 455                              "Cannot enable PCI resources, aborting\n");
 456                 goto err_out_disable_device;
 457         }
 458
 459         pci_set_master(pdev);
 460
 461         /* Query PCI controller on system for DMA addressing
 462          * limitation for the device.  Try 40-bit first, and
 463          * fail to 32-bit.
 464          */
 465         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
 466         if (err) {
 467                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 468                 if (err) {
 469                         shost_printk(KERN_ERR, fnic->lport->host,
 470                                      "No usable DMA configuration "
 471                                      "aborting\n");
 472                         goto err_out_release_regions;
 473                 }
 474                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 475                 if (err) {
 476                         shost_printk(KERN_ERR, fnic->lport->host,
 477                                      "Unable to obtain 32-bit DMA "
 478                                      "for consistent allocations, aborting.\n");
 479                         goto err_out_release_regions;
 480                 }
 481         } else {
 482                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
 483                 if (err) {
 484                         shost_printk(KERN_ERR, fnic->lport->host,
 485                                      "Unable to obtain 40-bit DMA "
 486                                      "for consistent allocations, aborting.\n");
 487                         goto err_out_release_regions;
 488                 }
 489         }
 490
 491         /* Map vNIC resources from BAR0 */
 492         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 493                 shost_printk(KERN_ERR, fnic->lport->host,
 494                              "BAR0 not memory-map'able, aborting.\n");
 495                 err = -ENODEV;
 496                 goto err_out_release_regions;
 497         }
 498
 499         fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
 500         fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
 501         fnic->bar0.len = pci_resource_len(pdev, 0);
 502
 503         if (!fnic->bar0.vaddr) {
 504                 shost_printk(KERN_ERR, fnic->lport->host,
 505                              "Cannot memory-map BAR0 res hdr, "
 506                              "aborting.\n");
 507                 err = -ENODEV;
 508                 goto err_out_release_regions;
 509         }
 510
 511         fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
 512         if (!fnic->vdev) {
 513                 shost_printk(KERN_ERR, fnic->lport->host,
 514                              "vNIC registration failed, "
 515                              "aborting.\n");
 516                 err = -ENODEV;
 517                 goto err_out_iounmap;
 518         }
 519
 520         err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
 521                             vnic_dev_open_done, 0);
 522         if (err) {
 523                 shost_printk(KERN_ERR, fnic->lport->host,
 524                              "vNIC dev open failed, aborting.\n");
 525                 goto err_out_vnic_unregister;
 526         }
 527
 528         err = vnic_dev_init(fnic->vdev, 0);
 529         if (err) {
 530                 shost_printk(KERN_ERR, fnic->lport->host,
 531                              "vNIC dev init failed, aborting.\n");
 532                 goto err_out_dev_close;
 533         }
 534
 535         err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
 536         if (err) {
 537                 shost_printk(KERN_ERR, fnic->lport->host,
 538                              "vNIC get MAC addr failed \n");
 539                 goto err_out_dev_close;
 540         }
 541         /* set data_src for point-to-point mode and to keep it non-zero */
 542         memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
 543
 544         /* Get vNIC configuration */
 545         err = fnic_get_vnic_config(fnic);
 546         if (err) {
 547                 shost_printk(KERN_ERR, fnic->lport->host,
 548                              "Get vNIC configuration failed, "
 549                              "aborting.\n");
 550                 goto err_out_dev_close;
 551         }
 552         host->max_lun = fnic->config.luns_per_tgt;
 553         host->max_id = FNIC_MAX_FCP_TARGET;
 554         host->max_cmd_len = FCOE_MAX_CMD_LEN;
 555
 556         fnic_get_res_counts(fnic);
 557
 558         err = fnic_set_intr_mode(fnic);
 559         if (err) {
 560                 shost_printk(KERN_ERR, fnic->lport->host,
 561                              "Failed to set intr mode, "
 562                              "aborting.\n");
 563                 goto err_out_dev_close;
 564         }
 565
 566         err = fnic_alloc_vnic_resources(fnic);
 567         if (err) {
 568                 shost_printk(KERN_ERR, fnic->lport->host,
 569                              "Failed to alloc vNIC resources, "
 570                              "aborting.\n");
 571                 goto err_out_clear_intr;
 572         }
 573
 574
 575         /* initialize all fnic locks */
 576         spin_lock_init(&fnic->fnic_lock);
 577
 578         for (i = 0; i < FNIC_WQ_MAX; i++)
 579                 spin_lock_init(&fnic->wq_lock[i]);
 580
 581         for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
 582                 spin_lock_init(&fnic->wq_copy_lock[i]);
 583                 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
 584                 fnic->fw_ack_recd[i] = 0;
 585                 fnic->fw_ack_index[i] = -1;
 586         }
 587
 588         for (i = 0; i < FNIC_IO_LOCKS; i++)
 589                 spin_lock_init(&fnic->io_req_lock[i]);
 590
 591         fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
 592         if (!fnic->io_req_pool)
 593                 goto err_out_free_resources;
 594
 595         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 596         if (!pool)
 597                 goto err_out_free_ioreq_pool;
 598         fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
 599
 600         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 601         if (!pool)
 602                 goto err_out_free_dflt_pool;
 603         fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
 604
 605         /* setup vlan config, hw inserts vlan header */
 606         fnic->vlan_hw_insert = 1;
 607         fnic->vlan_id = 0;
 608
 609         /* Initialize the FIP fcoe_ctrl struct */
 610         fnic->ctlr.send = fnic_eth_send;
 611         fnic->ctlr.update_mac = fnic_update_mac;
 612         fnic->ctlr.get_src_addr = fnic_get_mac;
 613         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
 614                 shost_printk(KERN_INFO, fnic->lport->host,
 615                              "firmware supports FIP\n");
 616                 /* enable directed and multicast */
 617                 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
 618                 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
 619                 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
 620                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
 621         } else {
 622                 shost_printk(KERN_INFO, fnic->lport->host,
 623                              "firmware uses non-FIP mode\n");
 624                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
 625         }
 626         fnic->state = FNIC_IN_FC_MODE;
 627
 628         /* Enable hardware stripping of vlan header on ingress */
 629         fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
 630
 631         /* Setup notification buffer area */
 632         err = fnic_notify_set(fnic);
 633         if (err) {
 634                 shost_printk(KERN_ERR, fnic->lport->host,
 635                              "Failed to alloc notify buffer, aborting.\n");
 636                 goto err_out_free_max_pool;
 637         }
 638
 639         /* Setup notify timer when using MSI interrupts */
 640         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
 641                 setup_timer(&fnic->notify_timer,
 642                             fnic_notify_timer, (unsigned long)fnic);
 643
 644         /* allocate RQ buffers and post them to RQ*/
 645         for (i = 0; i < fnic->rq_count; i++) {
 646                 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
 647                 if (err) {
 648                         shost_printk(KERN_ERR, fnic->lport->host,
 649                                      "fnic_alloc_rq_frame can't alloc "
 650                                      "frame\n");
 651                         goto err_out_free_rq_buf;
 652                 }
 653         }
 654
 655         /*
 656          * Initialization done with PCI system, hardware, firmware.
 657          * Add host to SCSI
 658          */
 659         err = scsi_add_host(lp->host, &pdev->dev);
 660         if (err) {
 661                 shost_printk(KERN_ERR, fnic->lport->host,
 662                              "fnic: scsi_add_host failed...exiting\n");
 663                 goto err_out_free_rq_buf;
 664         }
 665
 666         /* Start local port initiatialization */
 667
 668         lp->link_up = 0;
 669
 670         lp->max_retry_count = fnic->config.flogi_retries;
 671         lp->max_rport_retry_count = fnic->config.plogi_retries;
 672         lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 673                               FCP_SPPF_CONF_COMPL);
 674         if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
 675                 lp->service_params |= FCP_SPPF_RETRY;
 676
 677         lp->boot_time = jiffies;
 678         lp->e_d_tov = fnic->config.ed_tov;
 679         lp->r_a_tov = fnic->config.ra_tov;
 680         lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
 681         fc_set_wwnn(lp, fnic->config.node_wwn);
 682         fc_set_wwpn(lp, fnic->config.port_wwn);
 683
 684         fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
 685
 686         if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
 687                                FCPIO_HOST_EXCH_RANGE_END, NULL)) {
 688                 err = -ENOMEM;
 689                 goto err_out_remove_scsi_host;
 690         }
 691
 692         fc_lport_init_stats(lp);
 693
 694         fc_lport_config(lp);
 695
 696         if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
 697                        sizeof(struct fc_frame_header))) {
 698                 err = -EINVAL;
 699                 goto err_out_free_exch_mgr;
 700         }
 701         fc_host_maxframe_size(lp->host) = lp->mfs;
 702         fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
 703
 704         sprintf(fc_host_symbolic_name(lp->host),
 705                 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
 706
 707         spin_lock_irqsave(&fnic_list_lock, flags);
 708         list_add_tail(&fnic->list, &fnic_list);
 709         spin_unlock_irqrestore(&fnic_list_lock, flags);
 710
 711         INIT_WORK(&fnic->link_work, fnic_handle_link);
 712         INIT_WORK(&fnic->frame_work, fnic_handle_frame);
 713         skb_queue_head_init(&fnic->frame_queue);
 714         skb_queue_head_init(&fnic->tx_queue);
 715
 716         /* Enable all queues */
 717         for (i = 0; i < fnic->raw_wq_count; i++)
 718                 vnic_wq_enable(&fnic->wq[i]);
 719         for (i = 0; i < fnic->rq_count; i++)
 720                 vnic_rq_enable(&fnic->rq[i]);
 721         for (i = 0; i < fnic->wq_copy_count; i++)
 722                 vnic_wq_copy_enable(&fnic->wq_copy[i]);
 723
 724         fc_fabric_login(lp);
 725
 726         vnic_dev_enable(fnic->vdev);
 727
 728         err = fnic_request_intr(fnic);
 729         if (err) {
 730                 shost_printk(KERN_ERR, fnic->lport->host,
 731                              "Unable to request irq.\n");
 732                 goto err_out_free_exch_mgr;
 733         }
 734
 735         for (i = 0; i < fnic->intr_count; i++)
 736                 vnic_intr_unmask(&fnic->intr[i]);
 737
 738         fnic_notify_timer_start(fnic);
 739
 740         return 0;
 741
 742 err_out_free_exch_mgr:
 743         fc_exch_mgr_free(lp);
 744 err_out_remove_scsi_host:
 745         fc_remove_host(lp->host);
 746         scsi_remove_host(lp->host);
 747 err_out_free_rq_buf:
 748         for (i = 0; i < fnic->rq_count; i++)
 749                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
 750         vnic_dev_notify_unset(fnic->vdev);
 751 err_out_free_max_pool:
 752         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
 753 err_out_free_dflt_pool:
 754         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
 755 err_out_free_ioreq_pool:
 756         mempool_destroy(fnic->io_req_pool);
 757 err_out_free_resources:
 758         fnic_free_vnic_resources(fnic);
 759 err_out_clear_intr:
 760         fnic_clear_intr_mode(fnic);
 761 err_out_dev_close:
 762         vnic_dev_close(fnic->vdev);
 763 err_out_vnic_unregister:
 764         vnic_dev_unregister(fnic->vdev);
 765 err_out_iounmap:
 766         fnic_iounmap(fnic);
 767 err_out_release_regions:
 768         pci_release_regions(pdev);
 769 err_out_disable_device:
 770         pci_disable_device(pdev);
 771 err_out_free_hba:
 772         scsi_host_put(lp->host);
 773 err_out:
 774         return err;
 775 }
 776
 777 static void __devexit fnic_remove(struct pci_dev *pdev)
 778 {
 779         struct fnic *fnic = pci_get_drvdata(pdev);
 780         struct fc_lport *lp = fnic->lport;
 781         unsigned long flags;
 782
 783         /*
 784          * Mark state so that the workqueue thread stops forwarding
 785          * received frames and link events to the local port. ISR and
 786          * other threads that can queue work items will also stop
 787          * creating work items on the fnic workqueue
 788          */
 789         spin_lock_irqsave(&fnic->fnic_lock, flags);
 790         fnic->stop_rx_link_events = 1;
 791         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 792
 793         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
 794                 del_timer_sync(&fnic->notify_timer);
 795
 796         /*
 797          * Flush the fnic event queue. After this call, there should
 798          * be no event queued for this fnic device in the workqueue
 799          */
 800         flush_workqueue(fnic_event_queue);
 801         skb_queue_purge(&fnic->frame_queue);
 802         skb_queue_purge(&fnic->tx_queue);
 803
 804         /*
 805          * Log off the fabric. This stops all remote ports, dns port,
 806          * logs off the fabric. This flushes all rport, disc, lport work
 807          * before returning
 808          */
 809         fc_fabric_logoff(fnic->lport);
 810
 811         spin_lock_irqsave(&fnic->fnic_lock, flags);
 812         fnic->in_remove = 1;
 813         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 814
 815         fcoe_ctlr_destroy(&fnic->ctlr);
 816         fc_lport_destroy(lp);
 817
 818         /*
 819          * This stops the fnic device, masks all interrupts. Completed
 820          * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
 821          * cleaned up
 822          */
 823         fnic_cleanup(fnic);
 824
 825         BUG_ON(!skb_queue_empty(&fnic->frame_queue));
 826         BUG_ON(!skb_queue_empty(&fnic->tx_queue));
 827
 828         spin_lock_irqsave(&fnic_list_lock, flags);
 829         list_del(&fnic->list);
 830         spin_unlock_irqrestore(&fnic_list_lock, flags);
 831
 832         fc_remove_host(fnic->lport->host);
 833         scsi_remove_host(fnic->lport->host);
 834         fc_exch_mgr_free(fnic->lport);
 835         vnic_dev_notify_unset(fnic->vdev);
 836         fnic_free_intr(fnic);
 837         fnic_free_vnic_resources(fnic);
 838         fnic_clear_intr_mode(fnic);
 839         vnic_dev_close(fnic->vdev);
 840         vnic_dev_unregister(fnic->vdev);
 841         fnic_iounmap(fnic);
 842         pci_release_regions(pdev);
 843         pci_disable_device(pdev);
 844         pci_set_drvdata(pdev, NULL);
 845         scsi_host_put(lp->host);
 846 }
 847
 848 static struct pci_driver fnic_driver = {
 849         .name = DRV_NAME,
 850         .id_table = fnic_id_table,
 851         .probe = fnic_probe,
 852         .remove = __devexit_p(fnic_remove),
 853 };
 854
 855 static int __init fnic_init_module(void)
 856 {
 857         size_t len;
 858         int err = 0;
 859
 860         printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
 861
 862         /* Create a cache for allocation of default size sgls */
 863         len = sizeof(struct fnic_dflt_sgl_list);
 864         fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
 865                 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
 866                  SLAB_HWCACHE_ALIGN,
 867                  NULL);
 868         if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
 869                 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
 870                 err = -ENOMEM;
 871                 goto err_create_fnic_sgl_slab_dflt;
 872         }
 873
 874         /* Create a cache for allocation of max size sgls*/
 875         len = sizeof(struct fnic_sgl_list);
 876         fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
 877                 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
 878                  SLAB_HWCACHE_ALIGN,
 879                  NULL);
 880         if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
 881                 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
 882                 err = -ENOMEM;
 883                 goto err_create_fnic_sgl_slab_max;
 884         }
 885
 886         /* Create a cache of io_req structs for use via mempool */
 887         fnic_io_req_cache = kmem_cache_create("fnic_io_req",
 888                                               sizeof(struct fnic_io_req),
 889                                               0, SLAB_HWCACHE_ALIGN, NULL);
 890         if (!fnic_io_req_cache) {
 891                 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
 892                 err = -ENOMEM;
 893                 goto err_create_fnic_ioreq_slab;
 894         }
 895
 896         fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
 897         if (!fnic_event_queue) {
 898                 printk(KERN_ERR PFX "fnic work queue create failed\n");
 899                 err = -ENOMEM;
 900                 goto err_create_fnic_workq;
 901         }
 902
 903         spin_lock_init(&fnic_list_lock);
 904         INIT_LIST_HEAD(&fnic_list);
 905
 906         fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
 907         if (!fnic_fc_transport) {
 908                 printk(KERN_ERR PFX "fc_attach_transport error\n");
 909                 err = -ENOMEM;
 910                 goto err_fc_transport;
 911         }
 912
 913         /* register the driver with PCI system */
 914         err = pci_register_driver(&fnic_driver);
 915         if (err < 0) {
 916                 printk(KERN_ERR PFX "pci register error\n");
 917                 goto err_pci_register;
 918         }
 919         return err;
 920
 921 err_pci_register:
 922         fc_release_transport(fnic_fc_transport);
 923 err_fc_transport:
 924         destroy_workqueue(fnic_event_queue);
 925 err_create_fnic_workq:
 926         kmem_cache_destroy(fnic_io_req_cache);
 927 err_create_fnic_ioreq_slab:
 928         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 929 err_create_fnic_sgl_slab_max:
 930         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 931 err_create_fnic_sgl_slab_dflt:
 932         return err;
 933 }
 934
 935 static void __exit fnic_cleanup_module(void)
 936 {
 937         pci_unregister_driver(&fnic_driver);
 938         destroy_workqueue(fnic_event_queue);
 939         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 940         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 941         kmem_cache_destroy(fnic_io_req_cache);
 942         fc_release_transport(fnic_fc_transport);
 943 }
 944
 945 module_init(fnic_init_module);
 946 module_exit(fnic_cleanup_module);
 947