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_fip.h"
  43 #include "fnic.h"
  44
  45 #define PCI_DEVICE_ID_CISCO_FNIC        0x0045
  46
  47 /* Timer to poll notification area for events. Used for MSI interrupts */
  48 #define FNIC_NOTIFY_TIMER_PERIOD        (2 * HZ)
  49
  50 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
  51 static struct kmem_cache *fnic_io_req_cache;
  52 LIST_HEAD(fnic_list);
  53 DEFINE_SPINLOCK(fnic_list_lock);
  54
  55 /* Supported devices by fnic module */
  56 static struct pci_device_id fnic_id_table[] = {
  57         { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
  58         { 0, }
  59 };
  60
  61 MODULE_DESCRIPTION(DRV_DESCRIPTION);
  62 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
  63               "Joseph R. Eykholt <jeykholt@cisco.com>");
  64 MODULE_LICENSE("GPL v2");
  65 MODULE_VERSION(DRV_VERSION);
  66 MODULE_DEVICE_TABLE(pci, fnic_id_table);
  67
  68 unsigned int fnic_log_level;
  69 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
  70 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
  71
  72 unsigned int fnic_trace_max_pages = 16;
  73 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
  74 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
  75                                         "for fnic trace buffer");
  76
  77 static struct libfc_function_template fnic_transport_template = {
  78         .frame_send = fnic_send,
  79         .lport_set_port_id = fnic_set_port_id,
  80         .fcp_abort_io = fnic_empty_scsi_cleanup,
  81         .fcp_cleanup = fnic_empty_scsi_cleanup,
  82         .exch_mgr_reset = fnic_exch_mgr_reset
  83 };
  84
  85 static int fnic_slave_alloc(struct scsi_device *sdev)
  86 {
  87         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
  88
  89         sdev->tagged_supported = 1;
  90
  91         if (!rport || fc_remote_port_chkready(rport))
  92                 return -ENXIO;
  93
  94         scsi_activate_tcq(sdev, FNIC_DFLT_QUEUE_DEPTH);
  95         return 0;
  96 }
  97
  98 static struct scsi_host_template fnic_host_template = {
  99         .module = THIS_MODULE,
 100         .name = DRV_NAME,
 101         .queuecommand = fnic_queuecommand,
 102         .eh_abort_handler = fnic_abort_cmd,
 103         .eh_device_reset_handler = fnic_device_reset,
 104         .eh_host_reset_handler = fnic_host_reset,
 105         .slave_alloc = fnic_slave_alloc,
 106         .change_queue_depth = fc_change_queue_depth,
 107         .change_queue_type = fc_change_queue_type,
 108         .this_id = -1,
 109         .cmd_per_lun = 3,
 110         .can_queue = FNIC_MAX_IO_REQ,
 111         .use_clustering = ENABLE_CLUSTERING,
 112         .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
 113         .max_sectors = 0xffff,
 114         .shost_attrs = fnic_attrs,
 115 };
 116
 117 static void
 118 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
 119 {
 120         if (timeout)
 121                 rport->dev_loss_tmo = timeout;
 122         else
 123                 rport->dev_loss_tmo = 1;
 124 }
 125
 126 static void fnic_get_host_speed(struct Scsi_Host *shost);
 127 static struct scsi_transport_template *fnic_fc_transport;
 128 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
 129
 130 static struct fc_function_template fnic_fc_functions = {
 131
 132         .show_host_node_name = 1,
 133         .show_host_port_name = 1,
 134         .show_host_supported_classes = 1,
 135         .show_host_supported_fc4s = 1,
 136         .show_host_active_fc4s = 1,
 137         .show_host_maxframe_size = 1,
 138         .show_host_port_id = 1,
 139         .show_host_supported_speeds = 1,
 140         .get_host_speed = fnic_get_host_speed,
 141         .show_host_speed = 1,
 142         .show_host_port_type = 1,
 143         .get_host_port_state = fc_get_host_port_state,
 144         .show_host_port_state = 1,
 145         .show_host_symbolic_name = 1,
 146         .show_rport_maxframe_size = 1,
 147         .show_rport_supported_classes = 1,
 148         .show_host_fabric_name = 1,
 149         .show_starget_node_name = 1,
 150         .show_starget_port_name = 1,
 151         .show_starget_port_id = 1,
 152         .show_rport_dev_loss_tmo = 1,
 153         .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
 154         .issue_fc_host_lip = fnic_reset,
 155         .get_fc_host_stats = fnic_get_stats,
 156         .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
 157         .terminate_rport_io = fnic_terminate_rport_io,
 158         .bsg_request = fc_lport_bsg_request,
 159 };
 160
 161 static void fnic_get_host_speed(struct Scsi_Host *shost)
 162 {
 163         struct fc_lport *lp = shost_priv(shost);
 164         struct fnic *fnic = lport_priv(lp);
 165         u32 port_speed = vnic_dev_port_speed(fnic->vdev);
 166
 167         /* Add in other values as they get defined in fw */
 168         switch (port_speed) {
 169         case 10000:
 170                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
 171                 break;
 172         default:
 173                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
 174                 break;
 175         }
 176 }
 177
 178 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
 179 {
 180         int ret;
 181         struct fc_lport *lp = shost_priv(host);
 182         struct fnic *fnic = lport_priv(lp);
 183         struct fc_host_statistics *stats = &lp->host_stats;
 184         struct vnic_stats *vs;
 185         unsigned long flags;
 186
 187         if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
 188                 return stats;
 189         fnic->stats_time = jiffies;
 190
 191         spin_lock_irqsave(&fnic->fnic_lock, flags);
 192         ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
 193         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 194
 195         if (ret) {
 196                 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
 197                               "fnic: Get vnic stats failed"
 198                               " 0x%x", ret);
 199                 return stats;
 200         }
 201         vs = fnic->stats;
 202         stats->tx_frames = vs->tx.tx_unicast_frames_ok;
 203         stats->tx_words  = vs->tx.tx_unicast_bytes_ok / 4;
 204         stats->rx_frames = vs->rx.rx_unicast_frames_ok;
 205         stats->rx_words  = vs->rx.rx_unicast_bytes_ok / 4;
 206         stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
 207         stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
 208         stats->invalid_crc_count = vs->rx.rx_crc_errors;
 209         stats->seconds_since_last_reset = (jiffies - lp->boot_time) / HZ;
 210         stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
 211         stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
 212
 213         return stats;
 214 }
 215
 216 void fnic_log_q_error(struct fnic *fnic)
 217 {
 218         unsigned int i;
 219         u32 error_status;
 220
 221         for (i = 0; i < fnic->raw_wq_count; i++) {
 222                 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
 223                 if (error_status)
 224                         shost_printk(KERN_ERR, fnic->lport->host,
 225                                      "WQ[%d] error_status"
 226                                      " %d\n", i, error_status);
 227         }
 228
 229         for (i = 0; i < fnic->rq_count; i++) {
 230                 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
 231                 if (error_status)
 232                         shost_printk(KERN_ERR, fnic->lport->host,
 233                                      "RQ[%d] error_status"
 234                                      " %d\n", i, error_status);
 235         }
 236
 237         for (i = 0; i < fnic->wq_copy_count; i++) {
 238                 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
 239                 if (error_status)
 240                         shost_printk(KERN_ERR, fnic->lport->host,
 241                                      "CWQ[%d] error_status"
 242                                      " %d\n", i, error_status);
 243         }
 244 }
 245
 246 void fnic_handle_link_event(struct fnic *fnic)
 247 {
 248         unsigned long flags;
 249
 250         spin_lock_irqsave(&fnic->fnic_lock, flags);
 251         if (fnic->stop_rx_link_events) {
 252                 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 253                 return;
 254         }
 255         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 256
 257         queue_work(fnic_event_queue, &fnic->link_work);
 258
 259 }
 260
 261 static int fnic_notify_set(struct fnic *fnic)
 262 {
 263         int err;
 264
 265         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
 266         case VNIC_DEV_INTR_MODE_INTX:
 267                 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
 268                 break;
 269         case VNIC_DEV_INTR_MODE_MSI:
 270                 err = vnic_dev_notify_set(fnic->vdev, -1);
 271                 break;
 272         case VNIC_DEV_INTR_MODE_MSIX:
 273                 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
 274                 break;
 275         default:
 276                 shost_printk(KERN_ERR, fnic->lport->host,
 277                              "Interrupt mode should be set up"
 278                              " before devcmd notify set %d\n",
 279                              vnic_dev_get_intr_mode(fnic->vdev));
 280                 err = -1;
 281                 break;
 282         }
 283
 284         return err;
 285 }
 286
 287 static void fnic_notify_timer(unsigned long data)
 288 {
 289         struct fnic *fnic = (struct fnic *)data;
 290
 291         fnic_handle_link_event(fnic);
 292         mod_timer(&fnic->notify_timer,
 293                   round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
 294 }
 295
 296 static void fnic_fip_notify_timer(unsigned long data)
 297 {
 298         struct fnic *fnic = (struct fnic *)data;
 299
 300         fnic_handle_fip_timer(fnic);
 301 }
 302
 303 static void fnic_notify_timer_start(struct fnic *fnic)
 304 {
 305         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
 306         case VNIC_DEV_INTR_MODE_MSI:
 307                 /*
 308                  * Schedule first timeout immediately. The driver is
 309                  * initiatialized and ready to look for link up notification
 310                  */
 311                 mod_timer(&fnic->notify_timer, jiffies);
 312                 break;
 313         default:
 314                 /* Using intr for notification for INTx/MSI-X */
 315                 break;
 316         };
 317 }
 318
 319 static int fnic_dev_wait(struct vnic_dev *vdev,
 320                          int (*start)(struct vnic_dev *, int),
 321                          int (*finished)(struct vnic_dev *, int *),
 322                          int arg)
 323 {
 324         unsigned long time;
 325         int done;
 326         int err;
 327
 328         err = start(vdev, arg);
 329         if (err)
 330                 return err;
 331
 332         /* Wait for func to complete...2 seconds max */
 333         time = jiffies + (HZ * 2);
 334         do {
 335                 err = finished(vdev, &done);
 336                 if (err)
 337                         return err;
 338                 if (done)
 339                         return 0;
 340                 schedule_timeout_uninterruptible(HZ / 10);
 341         } while (time_after(time, jiffies));
 342
 343         return -ETIMEDOUT;
 344 }
 345
 346 static int fnic_cleanup(struct fnic *fnic)
 347 {
 348         unsigned int i;
 349         int err;
 350
 351         vnic_dev_disable(fnic->vdev);
 352         for (i = 0; i < fnic->intr_count; i++)
 353                 vnic_intr_mask(&fnic->intr[i]);
 354
 355         for (i = 0; i < fnic->rq_count; i++) {
 356                 err = vnic_rq_disable(&fnic->rq[i]);
 357                 if (err)
 358                         return err;
 359         }
 360         for (i = 0; i < fnic->raw_wq_count; i++) {
 361                 err = vnic_wq_disable(&fnic->wq[i]);
 362                 if (err)
 363                         return err;
 364         }
 365         for (i = 0; i < fnic->wq_copy_count; i++) {
 366                 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
 367                 if (err)
 368                         return err;
 369         }
 370
 371         /* Clean up completed IOs and FCS frames */
 372         fnic_wq_copy_cmpl_handler(fnic, -1);
 373         fnic_wq_cmpl_handler(fnic, -1);
 374         fnic_rq_cmpl_handler(fnic, -1);
 375
 376         /* Clean up the IOs and FCS frames that have not completed */
 377         for (i = 0; i < fnic->raw_wq_count; i++)
 378                 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
 379         for (i = 0; i < fnic->rq_count; i++)
 380                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
 381         for (i = 0; i < fnic->wq_copy_count; i++)
 382                 vnic_wq_copy_clean(&fnic->wq_copy[i],
 383                                    fnic_wq_copy_cleanup_handler);
 384
 385         for (i = 0; i < fnic->cq_count; i++)
 386                 vnic_cq_clean(&fnic->cq[i]);
 387         for (i = 0; i < fnic->intr_count; i++)
 388                 vnic_intr_clean(&fnic->intr[i]);
 389
 390         mempool_destroy(fnic->io_req_pool);
 391         for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
 392                 mempool_destroy(fnic->io_sgl_pool[i]);
 393
 394         return 0;
 395 }
 396
 397 static void fnic_iounmap(struct fnic *fnic)
 398 {
 399         if (fnic->bar0.vaddr)
 400                 iounmap(fnic->bar0.vaddr);
 401 }
 402
 403 /**
 404  * fnic_get_mac() - get assigned data MAC address for FIP code.
 405  * @lport:      local port.
 406  */
 407 static u8 *fnic_get_mac(struct fc_lport *lport)
 408 {
 409         struct fnic *fnic = lport_priv(lport);
 410
 411         return fnic->data_src_addr;
 412 }
 413
 414 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
 415 {
 416         u16 old_vlan;
 417         old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
 418 }
 419
 420 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 421 {
 422         struct Scsi_Host *host;
 423         struct fc_lport *lp;
 424         struct fnic *fnic;
 425         mempool_t *pool;
 426         int err;
 427         int i;
 428         unsigned long flags;
 429
 430         /*
 431          * Allocate SCSI Host and set up association between host,
 432          * local port, and fnic
 433          */
 434         lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
 435         if (!lp) {
 436                 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
 437                 err = -ENOMEM;
 438                 goto err_out;
 439         }
 440         host = lp->host;
 441         fnic = lport_priv(lp);
 442         fnic->lport = lp;
 443         fnic->ctlr.lp = lp;
 444
 445         snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
 446                  host->host_no);
 447
 448         host->transportt = fnic_fc_transport;
 449
 450         err = scsi_init_shared_tag_map(host, FNIC_MAX_IO_REQ);
 451         if (err) {
 452                 shost_printk(KERN_ERR, fnic->lport->host,
 453                              "Unable to alloc shared tag map\n");
 454                 goto err_out_free_hba;
 455         }
 456
 457         /* Setup PCI resources */
 458         pci_set_drvdata(pdev, fnic);
 459
 460         fnic->pdev = pdev;
 461
 462         err = pci_enable_device(pdev);
 463         if (err) {
 464                 shost_printk(KERN_ERR, fnic->lport->host,
 465                              "Cannot enable PCI device, aborting.\n");
 466                 goto err_out_free_hba;
 467         }
 468
 469         err = pci_request_regions(pdev, DRV_NAME);
 470         if (err) {
 471                 shost_printk(KERN_ERR, fnic->lport->host,
 472                              "Cannot enable PCI resources, aborting\n");
 473                 goto err_out_disable_device;
 474         }
 475
 476         pci_set_master(pdev);
 477
 478         /* Query PCI controller on system for DMA addressing
 479          * limitation for the device.  Try 40-bit first, and
 480          * fail to 32-bit.
 481          */
 482         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
 483         if (err) {
 484                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
 485                 if (err) {
 486                         shost_printk(KERN_ERR, fnic->lport->host,
 487                                      "No usable DMA configuration "
 488                                      "aborting\n");
 489                         goto err_out_release_regions;
 490                 }
 491                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
 492                 if (err) {
 493                         shost_printk(KERN_ERR, fnic->lport->host,
 494                                      "Unable to obtain 32-bit DMA "
 495                                      "for consistent allocations, aborting.\n");
 496                         goto err_out_release_regions;
 497                 }
 498         } else {
 499                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(40));
 500                 if (err) {
 501                         shost_printk(KERN_ERR, fnic->lport->host,
 502                                      "Unable to obtain 40-bit DMA "
 503                                      "for consistent allocations, aborting.\n");
 504                         goto err_out_release_regions;
 505                 }
 506         }
 507
 508         /* Map vNIC resources from BAR0 */
 509         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
 510                 shost_printk(KERN_ERR, fnic->lport->host,
 511                              "BAR0 not memory-map'able, aborting.\n");
 512                 err = -ENODEV;
 513                 goto err_out_release_regions;
 514         }
 515
 516         fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
 517         fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
 518         fnic->bar0.len = pci_resource_len(pdev, 0);
 519
 520         if (!fnic->bar0.vaddr) {
 521                 shost_printk(KERN_ERR, fnic->lport->host,
 522                              "Cannot memory-map BAR0 res hdr, "
 523                              "aborting.\n");
 524                 err = -ENODEV;
 525                 goto err_out_release_regions;
 526         }
 527
 528         fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
 529         if (!fnic->vdev) {
 530                 shost_printk(KERN_ERR, fnic->lport->host,
 531                              "vNIC registration failed, "
 532                              "aborting.\n");
 533                 err = -ENODEV;
 534                 goto err_out_iounmap;
 535         }
 536
 537         err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
 538                             vnic_dev_open_done, 0);
 539         if (err) {
 540                 shost_printk(KERN_ERR, fnic->lport->host,
 541                              "vNIC dev open failed, aborting.\n");
 542                 goto err_out_vnic_unregister;
 543         }
 544
 545         err = vnic_dev_init(fnic->vdev, 0);
 546         if (err) {
 547                 shost_printk(KERN_ERR, fnic->lport->host,
 548                              "vNIC dev init failed, aborting.\n");
 549                 goto err_out_dev_close;
 550         }
 551
 552         err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
 553         if (err) {
 554                 shost_printk(KERN_ERR, fnic->lport->host,
 555                              "vNIC get MAC addr failed \n");
 556                 goto err_out_dev_close;
 557         }
 558         /* set data_src for point-to-point mode and to keep it non-zero */
 559         memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
 560
 561         /* Get vNIC configuration */
 562         err = fnic_get_vnic_config(fnic);
 563         if (err) {
 564                 shost_printk(KERN_ERR, fnic->lport->host,
 565                              "Get vNIC configuration failed, "
 566                              "aborting.\n");
 567                 goto err_out_dev_close;
 568         }
 569         host->max_lun = fnic->config.luns_per_tgt;
 570         host->max_id = FNIC_MAX_FCP_TARGET;
 571         host->max_cmd_len = FCOE_MAX_CMD_LEN;
 572
 573         fnic_get_res_counts(fnic);
 574
 575         err = fnic_set_intr_mode(fnic);
 576         if (err) {
 577                 shost_printk(KERN_ERR, fnic->lport->host,
 578                              "Failed to set intr mode, "
 579                              "aborting.\n");
 580                 goto err_out_dev_close;
 581         }
 582
 583         err = fnic_alloc_vnic_resources(fnic);
 584         if (err) {
 585                 shost_printk(KERN_ERR, fnic->lport->host,
 586                              "Failed to alloc vNIC resources, "
 587                              "aborting.\n");
 588                 goto err_out_clear_intr;
 589         }
 590
 591
 592         /* initialize all fnic locks */
 593         spin_lock_init(&fnic->fnic_lock);
 594
 595         for (i = 0; i < FNIC_WQ_MAX; i++)
 596                 spin_lock_init(&fnic->wq_lock[i]);
 597
 598         for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
 599                 spin_lock_init(&fnic->wq_copy_lock[i]);
 600                 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
 601                 fnic->fw_ack_recd[i] = 0;
 602                 fnic->fw_ack_index[i] = -1;
 603         }
 604
 605         for (i = 0; i < FNIC_IO_LOCKS; i++)
 606                 spin_lock_init(&fnic->io_req_lock[i]);
 607
 608         fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
 609         if (!fnic->io_req_pool)
 610                 goto err_out_free_resources;
 611
 612         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 613         if (!pool)
 614                 goto err_out_free_ioreq_pool;
 615         fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
 616
 617         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 618         if (!pool)
 619                 goto err_out_free_dflt_pool;
 620         fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
 621
 622         /* setup vlan config, hw inserts vlan header */
 623         fnic->vlan_hw_insert = 1;
 624         fnic->vlan_id = 0;
 625
 626         /* Initialize the FIP fcoe_ctrl struct */
 627         fnic->ctlr.send = fnic_eth_send;
 628         fnic->ctlr.update_mac = fnic_update_mac;
 629         fnic->ctlr.get_src_addr = fnic_get_mac;
 630         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
 631                 shost_printk(KERN_INFO, fnic->lport->host,
 632                              "firmware supports FIP\n");
 633                 /* enable directed and multicast */
 634                 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
 635                 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
 636                 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
 637                 fnic->set_vlan = fnic_set_vlan;
 638                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
 639                 setup_timer(&fnic->fip_timer, fnic_fip_notify_timer,
 640                                                         (unsigned long)fnic);
 641                 spin_lock_init(&fnic->vlans_lock);
 642                 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
 643                 INIT_WORK(&fnic->event_work, fnic_handle_event);
 644                 skb_queue_head_init(&fnic->fip_frame_queue);
 645                 spin_lock_irqsave(&fnic_list_lock, flags);
 646                 if (!fnic_fip_queue) {
 647                         fnic_fip_queue =
 648                                 create_singlethread_workqueue("fnic_fip_q");
 649                         if (!fnic_fip_queue) {
 650                                 spin_unlock_irqrestore(&fnic_list_lock, flags);
 651                                 printk(KERN_ERR PFX "fnic FIP work queue "
 652                                                  "create failed\n");
 653                                 err = -ENOMEM;
 654                                 goto err_out_free_max_pool;
 655                         }
 656                 }
 657                 spin_unlock_irqrestore(&fnic_list_lock, flags);
 658                 INIT_LIST_HEAD(&fnic->evlist);
 659                 INIT_LIST_HEAD(&fnic->vlans);
 660         } else {
 661                 shost_printk(KERN_INFO, fnic->lport->host,
 662                              "firmware uses non-FIP mode\n");
 663                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
 664         }
 665         fnic->state = FNIC_IN_FC_MODE;
 666
 667         atomic_set(&fnic->in_flight, 0);
 668         fnic->state_flags = FNIC_FLAGS_NONE;
 669
 670         /* Enable hardware stripping of vlan header on ingress */
 671         fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
 672
 673         /* Setup notification buffer area */
 674         err = fnic_notify_set(fnic);
 675         if (err) {
 676                 shost_printk(KERN_ERR, fnic->lport->host,
 677                              "Failed to alloc notify buffer, aborting.\n");
 678                 goto err_out_free_max_pool;
 679         }
 680
 681         /* Setup notify timer when using MSI interrupts */
 682         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
 683                 setup_timer(&fnic->notify_timer,
 684                             fnic_notify_timer, (unsigned long)fnic);
 685
 686         /* allocate RQ buffers and post them to RQ*/
 687         for (i = 0; i < fnic->rq_count; i++) {
 688                 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
 689                 if (err) {
 690                         shost_printk(KERN_ERR, fnic->lport->host,
 691                                      "fnic_alloc_rq_frame can't alloc "
 692                                      "frame\n");
 693                         goto err_out_free_rq_buf;
 694                 }
 695         }
 696
 697         /*
 698          * Initialization done with PCI system, hardware, firmware.
 699          * Add host to SCSI
 700          */
 701         err = scsi_add_host(lp->host, &pdev->dev);
 702         if (err) {
 703                 shost_printk(KERN_ERR, fnic->lport->host,
 704                              "fnic: scsi_add_host failed...exiting\n");
 705                 goto err_out_free_rq_buf;
 706         }
 707
 708         /* Start local port initiatialization */
 709
 710         lp->link_up = 0;
 711
 712         lp->max_retry_count = fnic->config.flogi_retries;
 713         lp->max_rport_retry_count = fnic->config.plogi_retries;
 714         lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
 715                               FCP_SPPF_CONF_COMPL);
 716         if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
 717                 lp->service_params |= FCP_SPPF_RETRY;
 718
 719         lp->boot_time = jiffies;
 720         lp->e_d_tov = fnic->config.ed_tov;
 721         lp->r_a_tov = fnic->config.ra_tov;
 722         lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
 723         fc_set_wwnn(lp, fnic->config.node_wwn);
 724         fc_set_wwpn(lp, fnic->config.port_wwn);
 725
 726         fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
 727
 728         if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
 729                                FCPIO_HOST_EXCH_RANGE_END, NULL)) {
 730                 err = -ENOMEM;
 731                 goto err_out_remove_scsi_host;
 732         }
 733
 734         fc_lport_init_stats(lp);
 735
 736         fc_lport_config(lp);
 737
 738         if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
 739                        sizeof(struct fc_frame_header))) {
 740                 err = -EINVAL;
 741                 goto err_out_free_exch_mgr;
 742         }
 743         fc_host_maxframe_size(lp->host) = lp->mfs;
 744         fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
 745
 746         sprintf(fc_host_symbolic_name(lp->host),
 747                 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
 748
 749         spin_lock_irqsave(&fnic_list_lock, flags);
 750         list_add_tail(&fnic->list, &fnic_list);
 751         spin_unlock_irqrestore(&fnic_list_lock, flags);
 752
 753         INIT_WORK(&fnic->link_work, fnic_handle_link);
 754         INIT_WORK(&fnic->frame_work, fnic_handle_frame);
 755         skb_queue_head_init(&fnic->frame_queue);
 756         skb_queue_head_init(&fnic->tx_queue);
 757
 758         /* Enable all queues */
 759         for (i = 0; i < fnic->raw_wq_count; i++)
 760                 vnic_wq_enable(&fnic->wq[i]);
 761         for (i = 0; i < fnic->rq_count; i++)
 762                 vnic_rq_enable(&fnic->rq[i]);
 763         for (i = 0; i < fnic->wq_copy_count; i++)
 764                 vnic_wq_copy_enable(&fnic->wq_copy[i]);
 765
 766         fc_fabric_login(lp);
 767
 768         vnic_dev_enable(fnic->vdev);
 769
 770         err = fnic_request_intr(fnic);
 771         if (err) {
 772                 shost_printk(KERN_ERR, fnic->lport->host,
 773                              "Unable to request irq.\n");
 774                 goto err_out_free_exch_mgr;
 775         }
 776
 777         for (i = 0; i < fnic->intr_count; i++)
 778                 vnic_intr_unmask(&fnic->intr[i]);
 779
 780         fnic_notify_timer_start(fnic);
 781
 782         return 0;
 783
 784 err_out_free_exch_mgr:
 785         fc_exch_mgr_free(lp);
 786 err_out_remove_scsi_host:
 787         fc_remove_host(lp->host);
 788         scsi_remove_host(lp->host);
 789 err_out_free_rq_buf:
 790         for (i = 0; i < fnic->rq_count; i++)
 791                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
 792         vnic_dev_notify_unset(fnic->vdev);
 793 err_out_free_max_pool:
 794         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
 795 err_out_free_dflt_pool:
 796         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
 797 err_out_free_ioreq_pool:
 798         mempool_destroy(fnic->io_req_pool);
 799 err_out_free_resources:
 800         fnic_free_vnic_resources(fnic);
 801 err_out_clear_intr:
 802         fnic_clear_intr_mode(fnic);
 803 err_out_dev_close:
 804         vnic_dev_close(fnic->vdev);
 805 err_out_vnic_unregister:
 806         vnic_dev_unregister(fnic->vdev);
 807 err_out_iounmap:
 808         fnic_iounmap(fnic);
 809 err_out_release_regions:
 810         pci_release_regions(pdev);
 811 err_out_disable_device:
 812         pci_disable_device(pdev);
 813 err_out_free_hba:
 814         scsi_host_put(lp->host);
 815 err_out:
 816         return err;
 817 }
 818
 819 static void fnic_remove(struct pci_dev *pdev)
 820 {
 821         struct fnic *fnic = pci_get_drvdata(pdev);
 822         struct fc_lport *lp = fnic->lport;
 823         unsigned long flags;
 824
 825         /*
 826          * Mark state so that the workqueue thread stops forwarding
 827          * received frames and link events to the local port. ISR and
 828          * other threads that can queue work items will also stop
 829          * creating work items on the fnic workqueue
 830          */
 831         spin_lock_irqsave(&fnic->fnic_lock, flags);
 832         fnic->stop_rx_link_events = 1;
 833         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 834
 835         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
 836                 del_timer_sync(&fnic->notify_timer);
 837
 838         /*
 839          * Flush the fnic event queue. After this call, there should
 840          * be no event queued for this fnic device in the workqueue
 841          */
 842         flush_workqueue(fnic_event_queue);
 843         skb_queue_purge(&fnic->frame_queue);
 844         skb_queue_purge(&fnic->tx_queue);
 845
 846         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
 847                 del_timer_sync(&fnic->fip_timer);
 848                 skb_queue_purge(&fnic->fip_frame_queue);
 849                 fnic_fcoe_reset_vlans(fnic);
 850                 fnic_fcoe_evlist_free(fnic);
 851         }
 852
 853         /*
 854          * Log off the fabric. This stops all remote ports, dns port,
 855          * logs off the fabric. This flushes all rport, disc, lport work
 856          * before returning
 857          */
 858         fc_fabric_logoff(fnic->lport);
 859
 860         spin_lock_irqsave(&fnic->fnic_lock, flags);
 861         fnic->in_remove = 1;
 862         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
 863
 864         fcoe_ctlr_destroy(&fnic->ctlr);
 865         fc_lport_destroy(lp);
 866
 867         /*
 868          * This stops the fnic device, masks all interrupts. Completed
 869          * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
 870          * cleaned up
 871          */
 872         fnic_cleanup(fnic);
 873
 874         BUG_ON(!skb_queue_empty(&fnic->frame_queue));
 875         BUG_ON(!skb_queue_empty(&fnic->tx_queue));
 876
 877         spin_lock_irqsave(&fnic_list_lock, flags);
 878         list_del(&fnic->list);
 879         spin_unlock_irqrestore(&fnic_list_lock, flags);
 880
 881         fc_remove_host(fnic->lport->host);
 882         scsi_remove_host(fnic->lport->host);
 883         fc_exch_mgr_free(fnic->lport);
 884         vnic_dev_notify_unset(fnic->vdev);
 885         fnic_free_intr(fnic);
 886         fnic_free_vnic_resources(fnic);
 887         fnic_clear_intr_mode(fnic);
 888         vnic_dev_close(fnic->vdev);
 889         vnic_dev_unregister(fnic->vdev);
 890         fnic_iounmap(fnic);
 891         pci_release_regions(pdev);
 892         pci_disable_device(pdev);
 893         pci_set_drvdata(pdev, NULL);
 894         scsi_host_put(lp->host);
 895 }
 896
 897 static struct pci_driver fnic_driver = {
 898         .name = DRV_NAME,
 899         .id_table = fnic_id_table,
 900         .probe = fnic_probe,
 901         .remove = fnic_remove,
 902 };
 903
 904 static int __init fnic_init_module(void)
 905 {
 906         size_t len;
 907         int err = 0;
 908
 909         printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
 910
 911         /* Allocate memory for trace buffer */
 912         err = fnic_trace_buf_init();
 913         if (err < 0) {
 914                 printk(KERN_ERR PFX "Trace buffer initialization Failed "
 915                                   "Fnic Tracing utility is disabled\n");
 916                 fnic_trace_free();
 917         }
 918
 919         /* Create a cache for allocation of default size sgls */
 920         len = sizeof(struct fnic_dflt_sgl_list);
 921         fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
 922                 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
 923                  SLAB_HWCACHE_ALIGN,
 924                  NULL);
 925         if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
 926                 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
 927                 err = -ENOMEM;
 928                 goto err_create_fnic_sgl_slab_dflt;
 929         }
 930
 931         /* Create a cache for allocation of max size sgls*/
 932         len = sizeof(struct fnic_sgl_list);
 933         fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
 934                 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
 935                   SLAB_HWCACHE_ALIGN,
 936                   NULL);
 937         if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
 938                 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
 939                 err = -ENOMEM;
 940                 goto err_create_fnic_sgl_slab_max;
 941         }
 942
 943         /* Create a cache of io_req structs for use via mempool */
 944         fnic_io_req_cache = kmem_cache_create("fnic_io_req",
 945                                               sizeof(struct fnic_io_req),
 946                                               0, SLAB_HWCACHE_ALIGN, NULL);
 947         if (!fnic_io_req_cache) {
 948                 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
 949                 err = -ENOMEM;
 950                 goto err_create_fnic_ioreq_slab;
 951         }
 952
 953         fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
 954         if (!fnic_event_queue) {
 955                 printk(KERN_ERR PFX "fnic work queue create failed\n");
 956                 err = -ENOMEM;
 957                 goto err_create_fnic_workq;
 958         }
 959
 960         spin_lock_init(&fnic_list_lock);
 961         INIT_LIST_HEAD(&fnic_list);
 962
 963         fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
 964         if (!fnic_fc_transport) {
 965                 printk(KERN_ERR PFX "fc_attach_transport error\n");
 966                 err = -ENOMEM;
 967                 goto err_fc_transport;
 968         }
 969
 970         /* register the driver with PCI system */
 971         err = pci_register_driver(&fnic_driver);
 972         if (err < 0) {
 973                 printk(KERN_ERR PFX "pci register error\n");
 974                 goto err_pci_register;
 975         }
 976         return err;
 977
 978 err_pci_register:
 979         fc_release_transport(fnic_fc_transport);
 980 err_fc_transport:
 981         destroy_workqueue(fnic_event_queue);
 982 err_create_fnic_workq:
 983         kmem_cache_destroy(fnic_io_req_cache);
 984 err_create_fnic_ioreq_slab:
 985         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
 986 err_create_fnic_sgl_slab_max:
 987         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
 988 err_create_fnic_sgl_slab_dflt:
 989         fnic_trace_free();
 990         return err;
 991 }
 992
 993 static void __exit fnic_cleanup_module(void)
 994 {
 995         pci_unregister_driver(&fnic_driver);
 996         destroy_workqueue(fnic_event_queue);
 997         if (fnic_fip_queue) {
 998                 flush_workqueue(fnic_fip_queue);
 999                 destroy_workqueue(fnic_fip_queue);
1000         }
1001         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1002         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1003         kmem_cache_destroy(fnic_io_req_cache);
1004         fc_release_transport(fnic_fc_transport);
1005         fnic_trace_free();
1006 }
1007
1008 module_init(fnic_init_module);
1009 module_exit(fnic_cleanup_module);
1010