Version:  2.0.40 2.2.26 2.4.37 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0 4.1 4.2 4.3 4.4 4.5 4.6 4.7

Linux/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 unsigned int fnic_fc_trace_max_pages = 64;
 78 module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
 79 MODULE_PARM_DESC(fnic_fc_trace_max_pages,
 80                  "Total allocated memory pages for fc trace buffer");
 81 
 82 static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
 83 module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
 84 MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
 85 
 86 static struct libfc_function_template fnic_transport_template = {
 87         .frame_send = fnic_send,
 88         .lport_set_port_id = fnic_set_port_id,
 89         .fcp_abort_io = fnic_empty_scsi_cleanup,
 90         .fcp_cleanup = fnic_empty_scsi_cleanup,
 91         .exch_mgr_reset = fnic_exch_mgr_reset
 92 };
 93 
 94 static int fnic_slave_alloc(struct scsi_device *sdev)
 95 {
 96         struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
 97 
 98         if (!rport || fc_remote_port_chkready(rport))
 99                 return -ENXIO;
100 
101         scsi_change_queue_depth(sdev, fnic_max_qdepth);
102         return 0;
103 }
104 
105 static struct scsi_host_template fnic_host_template = {
106         .module = THIS_MODULE,
107         .name = DRV_NAME,
108         .queuecommand = fnic_queuecommand,
109         .eh_abort_handler = fnic_abort_cmd,
110         .eh_device_reset_handler = fnic_device_reset,
111         .eh_host_reset_handler = fnic_host_reset,
112         .slave_alloc = fnic_slave_alloc,
113         .change_queue_depth = scsi_change_queue_depth,
114         .this_id = -1,
115         .cmd_per_lun = 3,
116         .can_queue = FNIC_DFLT_IO_REQ,
117         .use_clustering = ENABLE_CLUSTERING,
118         .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
119         .max_sectors = 0xffff,
120         .shost_attrs = fnic_attrs,
121         .track_queue_depth = 1,
122 };
123 
124 static void
125 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
126 {
127         if (timeout)
128                 rport->dev_loss_tmo = timeout;
129         else
130                 rport->dev_loss_tmo = 1;
131 }
132 
133 static void fnic_get_host_speed(struct Scsi_Host *shost);
134 static struct scsi_transport_template *fnic_fc_transport;
135 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
136 static void fnic_reset_host_stats(struct Scsi_Host *);
137 
138 static struct fc_function_template fnic_fc_functions = {
139 
140         .show_host_node_name = 1,
141         .show_host_port_name = 1,
142         .show_host_supported_classes = 1,
143         .show_host_supported_fc4s = 1,
144         .show_host_active_fc4s = 1,
145         .show_host_maxframe_size = 1,
146         .show_host_port_id = 1,
147         .show_host_supported_speeds = 1,
148         .get_host_speed = fnic_get_host_speed,
149         .show_host_speed = 1,
150         .show_host_port_type = 1,
151         .get_host_port_state = fc_get_host_port_state,
152         .show_host_port_state = 1,
153         .show_host_symbolic_name = 1,
154         .show_rport_maxframe_size = 1,
155         .show_rport_supported_classes = 1,
156         .show_host_fabric_name = 1,
157         .show_starget_node_name = 1,
158         .show_starget_port_name = 1,
159         .show_starget_port_id = 1,
160         .show_rport_dev_loss_tmo = 1,
161         .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
162         .issue_fc_host_lip = fnic_reset,
163         .get_fc_host_stats = fnic_get_stats,
164         .reset_fc_host_stats = fnic_reset_host_stats,
165         .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
166         .terminate_rport_io = fnic_terminate_rport_io,
167         .bsg_request = fc_lport_bsg_request,
168 };
169 
170 static void fnic_get_host_speed(struct Scsi_Host *shost)
171 {
172         struct fc_lport *lp = shost_priv(shost);
173         struct fnic *fnic = lport_priv(lp);
174         u32 port_speed = vnic_dev_port_speed(fnic->vdev);
175 
176         /* Add in other values as they get defined in fw */
177         switch (port_speed) {
178         case 10000:
179                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
180                 break;
181         default:
182                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
183                 break;
184         }
185 }
186 
187 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
188 {
189         int ret;
190         struct fc_lport *lp = shost_priv(host);
191         struct fnic *fnic = lport_priv(lp);
192         struct fc_host_statistics *stats = &lp->host_stats;
193         struct vnic_stats *vs;
194         unsigned long flags;
195 
196         if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
197                 return stats;
198         fnic->stats_time = jiffies;
199 
200         spin_lock_irqsave(&fnic->fnic_lock, flags);
201         ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
202         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
203 
204         if (ret) {
205                 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
206                               "fnic: Get vnic stats failed"
207                               " 0x%x", ret);
208                 return stats;
209         }
210         vs = fnic->stats;
211         stats->tx_frames = vs->tx.tx_unicast_frames_ok;
212         stats->tx_words  = vs->tx.tx_unicast_bytes_ok / 4;
213         stats->rx_frames = vs->rx.rx_unicast_frames_ok;
214         stats->rx_words  = vs->rx.rx_unicast_bytes_ok / 4;
215         stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
216         stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
217         stats->invalid_crc_count = vs->rx.rx_crc_errors;
218         stats->seconds_since_last_reset =
219                         (jiffies - fnic->stats_reset_time) / HZ;
220         stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
221         stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
222 
223         return stats;
224 }
225 
226 /*
227  * fnic_dump_fchost_stats
228  * note : dumps fc_statistics into system logs
229  */
230 void fnic_dump_fchost_stats(struct Scsi_Host *host,
231                                 struct fc_host_statistics *stats)
232 {
233         FNIC_MAIN_NOTE(KERN_NOTICE, host,
234                         "fnic: seconds since last reset = %llu\n",
235                         stats->seconds_since_last_reset);
236         FNIC_MAIN_NOTE(KERN_NOTICE, host,
237                         "fnic: tx frames                = %llu\n",
238                         stats->tx_frames);
239         FNIC_MAIN_NOTE(KERN_NOTICE, host,
240                         "fnic: tx words         = %llu\n",
241                         stats->tx_words);
242         FNIC_MAIN_NOTE(KERN_NOTICE, host,
243                         "fnic: rx frames                = %llu\n",
244                         stats->rx_frames);
245         FNIC_MAIN_NOTE(KERN_NOTICE, host,
246                         "fnic: rx words         = %llu\n",
247                         stats->rx_words);
248         FNIC_MAIN_NOTE(KERN_NOTICE, host,
249                         "fnic: lip count                = %llu\n",
250                         stats->lip_count);
251         FNIC_MAIN_NOTE(KERN_NOTICE, host,
252                         "fnic: nos count                = %llu\n",
253                         stats->nos_count);
254         FNIC_MAIN_NOTE(KERN_NOTICE, host,
255                         "fnic: error frames             = %llu\n",
256                         stats->error_frames);
257         FNIC_MAIN_NOTE(KERN_NOTICE, host,
258                         "fnic: dumped frames    = %llu\n",
259                         stats->dumped_frames);
260         FNIC_MAIN_NOTE(KERN_NOTICE, host,
261                         "fnic: link failure count       = %llu\n",
262                         stats->link_failure_count);
263         FNIC_MAIN_NOTE(KERN_NOTICE, host,
264                         "fnic: loss of sync count       = %llu\n",
265                         stats->loss_of_sync_count);
266         FNIC_MAIN_NOTE(KERN_NOTICE, host,
267                         "fnic: loss of signal count     = %llu\n",
268                         stats->loss_of_signal_count);
269         FNIC_MAIN_NOTE(KERN_NOTICE, host,
270                         "fnic: prim seq protocol err count = %llu\n",
271                         stats->prim_seq_protocol_err_count);
272         FNIC_MAIN_NOTE(KERN_NOTICE, host,
273                         "fnic: invalid tx word count= %llu\n",
274                         stats->invalid_tx_word_count);
275         FNIC_MAIN_NOTE(KERN_NOTICE, host,
276                         "fnic: invalid crc count        = %llu\n",
277                         stats->invalid_crc_count);
278         FNIC_MAIN_NOTE(KERN_NOTICE, host,
279                         "fnic: fcp input requests       = %llu\n",
280                         stats->fcp_input_requests);
281         FNIC_MAIN_NOTE(KERN_NOTICE, host,
282                         "fnic: fcp output requests      = %llu\n",
283                         stats->fcp_output_requests);
284         FNIC_MAIN_NOTE(KERN_NOTICE, host,
285                         "fnic: fcp control requests     = %llu\n",
286                         stats->fcp_control_requests);
287         FNIC_MAIN_NOTE(KERN_NOTICE, host,
288                         "fnic: fcp input megabytes      = %llu\n",
289                         stats->fcp_input_megabytes);
290         FNIC_MAIN_NOTE(KERN_NOTICE, host,
291                         "fnic: fcp output megabytes     = %llu\n",
292                         stats->fcp_output_megabytes);
293         return;
294 }
295 
296 /*
297  * fnic_reset_host_stats : clears host stats
298  * note : called when reset_statistics set under sysfs dir
299  */
300 static void fnic_reset_host_stats(struct Scsi_Host *host)
301 {
302         int ret;
303         struct fc_lport *lp = shost_priv(host);
304         struct fnic *fnic = lport_priv(lp);
305         struct fc_host_statistics *stats;
306         unsigned long flags;
307 
308         /* dump current stats, before clearing them */
309         stats = fnic_get_stats(host);
310         fnic_dump_fchost_stats(host, stats);
311 
312         spin_lock_irqsave(&fnic->fnic_lock, flags);
313         ret = vnic_dev_stats_clear(fnic->vdev);
314         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
315 
316         if (ret) {
317                 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
318                                 "fnic: Reset vnic stats failed"
319                                 " 0x%x", ret);
320                 return;
321         }
322         fnic->stats_reset_time = jiffies;
323         memset(stats, 0, sizeof(*stats));
324 
325         return;
326 }
327 
328 void fnic_log_q_error(struct fnic *fnic)
329 {
330         unsigned int i;
331         u32 error_status;
332 
333         for (i = 0; i < fnic->raw_wq_count; i++) {
334                 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
335                 if (error_status)
336                         shost_printk(KERN_ERR, fnic->lport->host,
337                                      "WQ[%d] error_status"
338                                      " %d\n", i, error_status);
339         }
340 
341         for (i = 0; i < fnic->rq_count; i++) {
342                 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
343                 if (error_status)
344                         shost_printk(KERN_ERR, fnic->lport->host,
345                                      "RQ[%d] error_status"
346                                      " %d\n", i, error_status);
347         }
348 
349         for (i = 0; i < fnic->wq_copy_count; i++) {
350                 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
351                 if (error_status)
352                         shost_printk(KERN_ERR, fnic->lport->host,
353                                      "CWQ[%d] error_status"
354                                      " %d\n", i, error_status);
355         }
356 }
357 
358 void fnic_handle_link_event(struct fnic *fnic)
359 {
360         unsigned long flags;
361 
362         spin_lock_irqsave(&fnic->fnic_lock, flags);
363         if (fnic->stop_rx_link_events) {
364                 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
365                 return;
366         }
367         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
368 
369         queue_work(fnic_event_queue, &fnic->link_work);
370 
371 }
372 
373 static int fnic_notify_set(struct fnic *fnic)
374 {
375         int err;
376 
377         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
378         case VNIC_DEV_INTR_MODE_INTX:
379                 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
380                 break;
381         case VNIC_DEV_INTR_MODE_MSI:
382                 err = vnic_dev_notify_set(fnic->vdev, -1);
383                 break;
384         case VNIC_DEV_INTR_MODE_MSIX:
385                 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
386                 break;
387         default:
388                 shost_printk(KERN_ERR, fnic->lport->host,
389                              "Interrupt mode should be set up"
390                              " before devcmd notify set %d\n",
391                              vnic_dev_get_intr_mode(fnic->vdev));
392                 err = -1;
393                 break;
394         }
395 
396         return err;
397 }
398 
399 static void fnic_notify_timer(unsigned long data)
400 {
401         struct fnic *fnic = (struct fnic *)data;
402 
403         fnic_handle_link_event(fnic);
404         mod_timer(&fnic->notify_timer,
405                   round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
406 }
407 
408 static void fnic_fip_notify_timer(unsigned long data)
409 {
410         struct fnic *fnic = (struct fnic *)data;
411 
412         fnic_handle_fip_timer(fnic);
413 }
414 
415 static void fnic_notify_timer_start(struct fnic *fnic)
416 {
417         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
418         case VNIC_DEV_INTR_MODE_MSI:
419                 /*
420                  * Schedule first timeout immediately. The driver is
421                  * initiatialized and ready to look for link up notification
422                  */
423                 mod_timer(&fnic->notify_timer, jiffies);
424                 break;
425         default:
426                 /* Using intr for notification for INTx/MSI-X */
427                 break;
428         };
429 }
430 
431 static int fnic_dev_wait(struct vnic_dev *vdev,
432                          int (*start)(struct vnic_dev *, int),
433                          int (*finished)(struct vnic_dev *, int *),
434                          int arg)
435 {
436         unsigned long time;
437         int done;
438         int err;
439         int count;
440 
441         count = 0;
442 
443         err = start(vdev, arg);
444         if (err)
445                 return err;
446 
447         /* Wait for func to complete.
448         * Sometime schedule_timeout_uninterruptible take long time
449         * to wake up so we do not retry as we are only waiting for
450         * 2 seconds in while loop. By adding count, we make sure
451         * we try atleast three times before returning -ETIMEDOUT
452         */
453         time = jiffies + (HZ * 2);
454         do {
455                 err = finished(vdev, &done);
456                 count++;
457                 if (err)
458                         return err;
459                 if (done)
460                         return 0;
461                 schedule_timeout_uninterruptible(HZ / 10);
462         } while (time_after(time, jiffies) || (count < 3));
463 
464         return -ETIMEDOUT;
465 }
466 
467 static int fnic_cleanup(struct fnic *fnic)
468 {
469         unsigned int i;
470         int err;
471 
472         vnic_dev_disable(fnic->vdev);
473         for (i = 0; i < fnic->intr_count; i++)
474                 vnic_intr_mask(&fnic->intr[i]);
475 
476         for (i = 0; i < fnic->rq_count; i++) {
477                 err = vnic_rq_disable(&fnic->rq[i]);
478                 if (err)
479                         return err;
480         }
481         for (i = 0; i < fnic->raw_wq_count; i++) {
482                 err = vnic_wq_disable(&fnic->wq[i]);
483                 if (err)
484                         return err;
485         }
486         for (i = 0; i < fnic->wq_copy_count; i++) {
487                 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
488                 if (err)
489                         return err;
490         }
491 
492         /* Clean up completed IOs and FCS frames */
493         fnic_wq_copy_cmpl_handler(fnic, -1);
494         fnic_wq_cmpl_handler(fnic, -1);
495         fnic_rq_cmpl_handler(fnic, -1);
496 
497         /* Clean up the IOs and FCS frames that have not completed */
498         for (i = 0; i < fnic->raw_wq_count; i++)
499                 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
500         for (i = 0; i < fnic->rq_count; i++)
501                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
502         for (i = 0; i < fnic->wq_copy_count; i++)
503                 vnic_wq_copy_clean(&fnic->wq_copy[i],
504                                    fnic_wq_copy_cleanup_handler);
505 
506         for (i = 0; i < fnic->cq_count; i++)
507                 vnic_cq_clean(&fnic->cq[i]);
508         for (i = 0; i < fnic->intr_count; i++)
509                 vnic_intr_clean(&fnic->intr[i]);
510 
511         mempool_destroy(fnic->io_req_pool);
512         for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
513                 mempool_destroy(fnic->io_sgl_pool[i]);
514 
515         return 0;
516 }
517 
518 static void fnic_iounmap(struct fnic *fnic)
519 {
520         if (fnic->bar0.vaddr)
521                 iounmap(fnic->bar0.vaddr);
522 }
523 
524 /**
525  * fnic_get_mac() - get assigned data MAC address for FIP code.
526  * @lport:      local port.
527  */
528 static u8 *fnic_get_mac(struct fc_lport *lport)
529 {
530         struct fnic *fnic = lport_priv(lport);
531 
532         return fnic->data_src_addr;
533 }
534 
535 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
536 {
537         u16 old_vlan;
538         old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
539 }
540 
541 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
542 {
543         struct Scsi_Host *host;
544         struct fc_lport *lp;
545         struct fnic *fnic;
546         mempool_t *pool;
547         int err;
548         int i;
549         unsigned long flags;
550 
551         /*
552          * Allocate SCSI Host and set up association between host,
553          * local port, and fnic
554          */
555         lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
556         if (!lp) {
557                 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
558                 err = -ENOMEM;
559                 goto err_out;
560         }
561         host = lp->host;
562         fnic = lport_priv(lp);
563         fnic->lport = lp;
564         fnic->ctlr.lp = lp;
565 
566         snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
567                  host->host_no);
568 
569         host->transportt = fnic_fc_transport;
570 
571         err = fnic_stats_debugfs_init(fnic);
572         if (err) {
573                 shost_printk(KERN_ERR, fnic->lport->host,
574                                 "Failed to initialize debugfs for stats\n");
575                 fnic_stats_debugfs_remove(fnic);
576         }
577 
578         /* Setup PCI resources */
579         pci_set_drvdata(pdev, fnic);
580 
581         fnic->pdev = pdev;
582 
583         err = pci_enable_device(pdev);
584         if (err) {
585                 shost_printk(KERN_ERR, fnic->lport->host,
586                              "Cannot enable PCI device, aborting.\n");
587                 goto err_out_free_hba;
588         }
589 
590         err = pci_request_regions(pdev, DRV_NAME);
591         if (err) {
592                 shost_printk(KERN_ERR, fnic->lport->host,
593                              "Cannot enable PCI resources, aborting\n");
594                 goto err_out_disable_device;
595         }
596 
597         pci_set_master(pdev);
598 
599         /* Query PCI controller on system for DMA addressing
600          * limitation for the device.  Try 64-bit first, and
601          * fail to 32-bit.
602          */
603         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
604         if (err) {
605                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
606                 if (err) {
607                         shost_printk(KERN_ERR, fnic->lport->host,
608                                      "No usable DMA configuration "
609                                      "aborting\n");
610                         goto err_out_release_regions;
611                 }
612                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
613                 if (err) {
614                         shost_printk(KERN_ERR, fnic->lport->host,
615                                      "Unable to obtain 32-bit DMA "
616                                      "for consistent allocations, aborting.\n");
617                         goto err_out_release_regions;
618                 }
619         } else {
620                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
621                 if (err) {
622                         shost_printk(KERN_ERR, fnic->lport->host,
623                                      "Unable to obtain 64-bit DMA "
624                                      "for consistent allocations, aborting.\n");
625                         goto err_out_release_regions;
626                 }
627         }
628 
629         /* Map vNIC resources from BAR0 */
630         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
631                 shost_printk(KERN_ERR, fnic->lport->host,
632                              "BAR0 not memory-map'able, aborting.\n");
633                 err = -ENODEV;
634                 goto err_out_release_regions;
635         }
636 
637         fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
638         fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
639         fnic->bar0.len = pci_resource_len(pdev, 0);
640 
641         if (!fnic->bar0.vaddr) {
642                 shost_printk(KERN_ERR, fnic->lport->host,
643                              "Cannot memory-map BAR0 res hdr, "
644                              "aborting.\n");
645                 err = -ENODEV;
646                 goto err_out_release_regions;
647         }
648 
649         fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
650         if (!fnic->vdev) {
651                 shost_printk(KERN_ERR, fnic->lport->host,
652                              "vNIC registration failed, "
653                              "aborting.\n");
654                 err = -ENODEV;
655                 goto err_out_iounmap;
656         }
657 
658         err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
659                             vnic_dev_open_done, 0);
660         if (err) {
661                 shost_printk(KERN_ERR, fnic->lport->host,
662                              "vNIC dev open failed, aborting.\n");
663                 goto err_out_vnic_unregister;
664         }
665 
666         err = vnic_dev_init(fnic->vdev, 0);
667         if (err) {
668                 shost_printk(KERN_ERR, fnic->lport->host,
669                              "vNIC dev init failed, aborting.\n");
670                 goto err_out_dev_close;
671         }
672 
673         err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
674         if (err) {
675                 shost_printk(KERN_ERR, fnic->lport->host,
676                              "vNIC get MAC addr failed \n");
677                 goto err_out_dev_close;
678         }
679         /* set data_src for point-to-point mode and to keep it non-zero */
680         memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
681 
682         /* Get vNIC configuration */
683         err = fnic_get_vnic_config(fnic);
684         if (err) {
685                 shost_printk(KERN_ERR, fnic->lport->host,
686                              "Get vNIC configuration failed, "
687                              "aborting.\n");
688                 goto err_out_dev_close;
689         }
690 
691         /* Configure Maximum Outstanding IO reqs*/
692         if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) {
693                 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
694                                         max_t(u32, FNIC_MIN_IO_REQ,
695                                         fnic->config.io_throttle_count));
696         }
697         fnic->fnic_max_tag_id = host->can_queue;
698 
699         host->max_lun = fnic->config.luns_per_tgt;
700         host->max_id = FNIC_MAX_FCP_TARGET;
701         host->max_cmd_len = FCOE_MAX_CMD_LEN;
702 
703         fnic_get_res_counts(fnic);
704 
705         err = fnic_set_intr_mode(fnic);
706         if (err) {
707                 shost_printk(KERN_ERR, fnic->lport->host,
708                              "Failed to set intr mode, "
709                              "aborting.\n");
710                 goto err_out_dev_close;
711         }
712 
713         err = fnic_alloc_vnic_resources(fnic);
714         if (err) {
715                 shost_printk(KERN_ERR, fnic->lport->host,
716                              "Failed to alloc vNIC resources, "
717                              "aborting.\n");
718                 goto err_out_clear_intr;
719         }
720 
721 
722         /* initialize all fnic locks */
723         spin_lock_init(&fnic->fnic_lock);
724 
725         for (i = 0; i < FNIC_WQ_MAX; i++)
726                 spin_lock_init(&fnic->wq_lock[i]);
727 
728         for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
729                 spin_lock_init(&fnic->wq_copy_lock[i]);
730                 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
731                 fnic->fw_ack_recd[i] = 0;
732                 fnic->fw_ack_index[i] = -1;
733         }
734 
735         for (i = 0; i < FNIC_IO_LOCKS; i++)
736                 spin_lock_init(&fnic->io_req_lock[i]);
737 
738         fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
739         if (!fnic->io_req_pool)
740                 goto err_out_free_resources;
741 
742         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
743         if (!pool)
744                 goto err_out_free_ioreq_pool;
745         fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
746 
747         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
748         if (!pool)
749                 goto err_out_free_dflt_pool;
750         fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
751 
752         /* setup vlan config, hw inserts vlan header */
753         fnic->vlan_hw_insert = 1;
754         fnic->vlan_id = 0;
755 
756         /* Initialize the FIP fcoe_ctrl struct */
757         fnic->ctlr.send = fnic_eth_send;
758         fnic->ctlr.update_mac = fnic_update_mac;
759         fnic->ctlr.get_src_addr = fnic_get_mac;
760         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
761                 shost_printk(KERN_INFO, fnic->lport->host,
762                              "firmware supports FIP\n");
763                 /* enable directed and multicast */
764                 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
765                 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
766                 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
767                 fnic->set_vlan = fnic_set_vlan;
768                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
769                 setup_timer(&fnic->fip_timer, fnic_fip_notify_timer,
770                                                         (unsigned long)fnic);
771                 spin_lock_init(&fnic->vlans_lock);
772                 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
773                 INIT_WORK(&fnic->event_work, fnic_handle_event);
774                 skb_queue_head_init(&fnic->fip_frame_queue);
775                 INIT_LIST_HEAD(&fnic->evlist);
776                 INIT_LIST_HEAD(&fnic->vlans);
777         } else {
778                 shost_printk(KERN_INFO, fnic->lport->host,
779                              "firmware uses non-FIP mode\n");
780                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
781                 fnic->ctlr.state = FIP_ST_NON_FIP;
782         }
783         fnic->state = FNIC_IN_FC_MODE;
784 
785         atomic_set(&fnic->in_flight, 0);
786         fnic->state_flags = FNIC_FLAGS_NONE;
787 
788         /* Enable hardware stripping of vlan header on ingress */
789         fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
790 
791         /* Setup notification buffer area */
792         err = fnic_notify_set(fnic);
793         if (err) {
794                 shost_printk(KERN_ERR, fnic->lport->host,
795                              "Failed to alloc notify buffer, aborting.\n");
796                 goto err_out_free_max_pool;
797         }
798 
799         /* Setup notify timer when using MSI interrupts */
800         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
801                 setup_timer(&fnic->notify_timer,
802                             fnic_notify_timer, (unsigned long)fnic);
803 
804         /* allocate RQ buffers and post them to RQ*/
805         for (i = 0; i < fnic->rq_count; i++) {
806                 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
807                 if (err) {
808                         shost_printk(KERN_ERR, fnic->lport->host,
809                                      "fnic_alloc_rq_frame can't alloc "
810                                      "frame\n");
811                         goto err_out_free_rq_buf;
812                 }
813         }
814 
815         /*
816          * Initialization done with PCI system, hardware, firmware.
817          * Add host to SCSI
818          */
819         err = scsi_add_host(lp->host, &pdev->dev);
820         if (err) {
821                 shost_printk(KERN_ERR, fnic->lport->host,
822                              "fnic: scsi_add_host failed...exiting\n");
823                 goto err_out_free_rq_buf;
824         }
825 
826         /* Start local port initiatialization */
827 
828         lp->link_up = 0;
829 
830         lp->max_retry_count = fnic->config.flogi_retries;
831         lp->max_rport_retry_count = fnic->config.plogi_retries;
832         lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
833                               FCP_SPPF_CONF_COMPL);
834         if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
835                 lp->service_params |= FCP_SPPF_RETRY;
836 
837         lp->boot_time = jiffies;
838         lp->e_d_tov = fnic->config.ed_tov;
839         lp->r_a_tov = fnic->config.ra_tov;
840         lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
841         fc_set_wwnn(lp, fnic->config.node_wwn);
842         fc_set_wwpn(lp, fnic->config.port_wwn);
843 
844         fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
845 
846         if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
847                                FCPIO_HOST_EXCH_RANGE_END, NULL)) {
848                 err = -ENOMEM;
849                 goto err_out_remove_scsi_host;
850         }
851 
852         fc_lport_init_stats(lp);
853         fnic->stats_reset_time = jiffies;
854 
855         fc_lport_config(lp);
856 
857         if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
858                        sizeof(struct fc_frame_header))) {
859                 err = -EINVAL;
860                 goto err_out_free_exch_mgr;
861         }
862         fc_host_maxframe_size(lp->host) = lp->mfs;
863         fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
864 
865         sprintf(fc_host_symbolic_name(lp->host),
866                 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
867 
868         spin_lock_irqsave(&fnic_list_lock, flags);
869         list_add_tail(&fnic->list, &fnic_list);
870         spin_unlock_irqrestore(&fnic_list_lock, flags);
871 
872         INIT_WORK(&fnic->link_work, fnic_handle_link);
873         INIT_WORK(&fnic->frame_work, fnic_handle_frame);
874         skb_queue_head_init(&fnic->frame_queue);
875         skb_queue_head_init(&fnic->tx_queue);
876 
877         /* Enable all queues */
878         for (i = 0; i < fnic->raw_wq_count; i++)
879                 vnic_wq_enable(&fnic->wq[i]);
880         for (i = 0; i < fnic->rq_count; i++)
881                 vnic_rq_enable(&fnic->rq[i]);
882         for (i = 0; i < fnic->wq_copy_count; i++)
883                 vnic_wq_copy_enable(&fnic->wq_copy[i]);
884 
885         fc_fabric_login(lp);
886 
887         vnic_dev_enable(fnic->vdev);
888 
889         err = fnic_request_intr(fnic);
890         if (err) {
891                 shost_printk(KERN_ERR, fnic->lport->host,
892                              "Unable to request irq.\n");
893                 goto err_out_free_exch_mgr;
894         }
895 
896         for (i = 0; i < fnic->intr_count; i++)
897                 vnic_intr_unmask(&fnic->intr[i]);
898 
899         fnic_notify_timer_start(fnic);
900 
901         return 0;
902 
903 err_out_free_exch_mgr:
904         fc_exch_mgr_free(lp);
905 err_out_remove_scsi_host:
906         fc_remove_host(lp->host);
907         scsi_remove_host(lp->host);
908 err_out_free_rq_buf:
909         for (i = 0; i < fnic->rq_count; i++)
910                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
911         vnic_dev_notify_unset(fnic->vdev);
912 err_out_free_max_pool:
913         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
914 err_out_free_dflt_pool:
915         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
916 err_out_free_ioreq_pool:
917         mempool_destroy(fnic->io_req_pool);
918 err_out_free_resources:
919         fnic_free_vnic_resources(fnic);
920 err_out_clear_intr:
921         fnic_clear_intr_mode(fnic);
922 err_out_dev_close:
923         vnic_dev_close(fnic->vdev);
924 err_out_vnic_unregister:
925         vnic_dev_unregister(fnic->vdev);
926 err_out_iounmap:
927         fnic_iounmap(fnic);
928 err_out_release_regions:
929         pci_release_regions(pdev);
930 err_out_disable_device:
931         pci_disable_device(pdev);
932 err_out_free_hba:
933         fnic_stats_debugfs_remove(fnic);
934         scsi_host_put(lp->host);
935 err_out:
936         return err;
937 }
938 
939 static void fnic_remove(struct pci_dev *pdev)
940 {
941         struct fnic *fnic = pci_get_drvdata(pdev);
942         struct fc_lport *lp = fnic->lport;
943         unsigned long flags;
944 
945         /*
946          * Mark state so that the workqueue thread stops forwarding
947          * received frames and link events to the local port. ISR and
948          * other threads that can queue work items will also stop
949          * creating work items on the fnic workqueue
950          */
951         spin_lock_irqsave(&fnic->fnic_lock, flags);
952         fnic->stop_rx_link_events = 1;
953         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
954 
955         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
956                 del_timer_sync(&fnic->notify_timer);
957 
958         /*
959          * Flush the fnic event queue. After this call, there should
960          * be no event queued for this fnic device in the workqueue
961          */
962         flush_workqueue(fnic_event_queue);
963         skb_queue_purge(&fnic->frame_queue);
964         skb_queue_purge(&fnic->tx_queue);
965 
966         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
967                 del_timer_sync(&fnic->fip_timer);
968                 skb_queue_purge(&fnic->fip_frame_queue);
969                 fnic_fcoe_reset_vlans(fnic);
970                 fnic_fcoe_evlist_free(fnic);
971         }
972 
973         /*
974          * Log off the fabric. This stops all remote ports, dns port,
975          * logs off the fabric. This flushes all rport, disc, lport work
976          * before returning
977          */
978         fc_fabric_logoff(fnic->lport);
979 
980         spin_lock_irqsave(&fnic->fnic_lock, flags);
981         fnic->in_remove = 1;
982         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
983 
984         fcoe_ctlr_destroy(&fnic->ctlr);
985         fc_lport_destroy(lp);
986         fnic_stats_debugfs_remove(fnic);
987 
988         /*
989          * This stops the fnic device, masks all interrupts. Completed
990          * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
991          * cleaned up
992          */
993         fnic_cleanup(fnic);
994 
995         BUG_ON(!skb_queue_empty(&fnic->frame_queue));
996         BUG_ON(!skb_queue_empty(&fnic->tx_queue));
997 
998         spin_lock_irqsave(&fnic_list_lock, flags);
999         list_del(&fnic->list);
1000         spin_unlock_irqrestore(&fnic_list_lock, flags);
1001 
1002         fc_remove_host(fnic->lport->host);
1003         scsi_remove_host(fnic->lport->host);
1004         fc_exch_mgr_free(fnic->lport);
1005         vnic_dev_notify_unset(fnic->vdev);
1006         fnic_free_intr(fnic);
1007         fnic_free_vnic_resources(fnic);
1008         fnic_clear_intr_mode(fnic);
1009         vnic_dev_close(fnic->vdev);
1010         vnic_dev_unregister(fnic->vdev);
1011         fnic_iounmap(fnic);
1012         pci_release_regions(pdev);
1013         pci_disable_device(pdev);
1014         scsi_host_put(lp->host);
1015 }
1016 
1017 static struct pci_driver fnic_driver = {
1018         .name = DRV_NAME,
1019         .id_table = fnic_id_table,
1020         .probe = fnic_probe,
1021         .remove = fnic_remove,
1022 };
1023 
1024 static int __init fnic_init_module(void)
1025 {
1026         size_t len;
1027         int err = 0;
1028 
1029         printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
1030 
1031         /* Create debugfs entries for fnic */
1032         err = fnic_debugfs_init();
1033         if (err < 0) {
1034                 printk(KERN_ERR PFX "Failed to create fnic directory "
1035                                 "for tracing and stats logging\n");
1036                 fnic_debugfs_terminate();
1037         }
1038 
1039         /* Allocate memory for trace buffer */
1040         err = fnic_trace_buf_init();
1041         if (err < 0) {
1042                 printk(KERN_ERR PFX
1043                        "Trace buffer initialization Failed. "
1044                        "Fnic Tracing utility is disabled\n");
1045                 fnic_trace_free();
1046         }
1047 
1048     /* Allocate memory for fc trace buffer */
1049         err = fnic_fc_trace_init();
1050         if (err < 0) {
1051                 printk(KERN_ERR PFX "FC trace buffer initialization Failed "
1052                        "FC frame tracing utility is disabled\n");
1053                 fnic_fc_trace_free();
1054         }
1055 
1056         /* Create a cache for allocation of default size sgls */
1057         len = sizeof(struct fnic_dflt_sgl_list);
1058         fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
1059                 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1060                  SLAB_HWCACHE_ALIGN,
1061                  NULL);
1062         if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
1063                 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
1064                 err = -ENOMEM;
1065                 goto err_create_fnic_sgl_slab_dflt;
1066         }
1067 
1068         /* Create a cache for allocation of max size sgls*/
1069         len = sizeof(struct fnic_sgl_list);
1070         fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
1071                 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1072                   SLAB_HWCACHE_ALIGN,
1073                   NULL);
1074         if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
1075                 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
1076                 err = -ENOMEM;
1077                 goto err_create_fnic_sgl_slab_max;
1078         }
1079 
1080         /* Create a cache of io_req structs for use via mempool */
1081         fnic_io_req_cache = kmem_cache_create("fnic_io_req",
1082                                               sizeof(struct fnic_io_req),
1083                                               0, SLAB_HWCACHE_ALIGN, NULL);
1084         if (!fnic_io_req_cache) {
1085                 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
1086                 err = -ENOMEM;
1087                 goto err_create_fnic_ioreq_slab;
1088         }
1089 
1090         fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
1091         if (!fnic_event_queue) {
1092                 printk(KERN_ERR PFX "fnic work queue create failed\n");
1093                 err = -ENOMEM;
1094                 goto err_create_fnic_workq;
1095         }
1096 
1097         spin_lock_init(&fnic_list_lock);
1098         INIT_LIST_HEAD(&fnic_list);
1099 
1100         fnic_fip_queue = create_singlethread_workqueue("fnic_fip_q");
1101         if (!fnic_fip_queue) {
1102                 printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
1103                 err = -ENOMEM;
1104                 goto err_create_fip_workq;
1105         }
1106 
1107         fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
1108         if (!fnic_fc_transport) {
1109                 printk(KERN_ERR PFX "fc_attach_transport error\n");
1110                 err = -ENOMEM;
1111                 goto err_fc_transport;
1112         }
1113 
1114         /* register the driver with PCI system */
1115         err = pci_register_driver(&fnic_driver);
1116         if (err < 0) {
1117                 printk(KERN_ERR PFX "pci register error\n");
1118                 goto err_pci_register;
1119         }
1120         return err;
1121 
1122 err_pci_register:
1123         fc_release_transport(fnic_fc_transport);
1124 err_fc_transport:
1125         destroy_workqueue(fnic_fip_queue);
1126 err_create_fip_workq:
1127         destroy_workqueue(fnic_event_queue);
1128 err_create_fnic_workq:
1129         kmem_cache_destroy(fnic_io_req_cache);
1130 err_create_fnic_ioreq_slab:
1131         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1132 err_create_fnic_sgl_slab_max:
1133         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1134 err_create_fnic_sgl_slab_dflt:
1135         fnic_trace_free();
1136         fnic_fc_trace_free();
1137         fnic_debugfs_terminate();
1138         return err;
1139 }
1140 
1141 static void __exit fnic_cleanup_module(void)
1142 {
1143         pci_unregister_driver(&fnic_driver);
1144         destroy_workqueue(fnic_event_queue);
1145         if (fnic_fip_queue) {
1146                 flush_workqueue(fnic_fip_queue);
1147                 destroy_workqueue(fnic_fip_queue);
1148         }
1149         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1150         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1151         kmem_cache_destroy(fnic_io_req_cache);
1152         fc_release_transport(fnic_fc_transport);
1153         fnic_trace_free();
1154         fnic_fc_trace_free();
1155         fnic_debugfs_terminate();
1156 }
1157 
1158 module_init(fnic_init_module);
1159 module_exit(fnic_cleanup_module);
1160 
1161 

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