Version:  2.0.40 2.2.26 2.4.37 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 4.0

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         .use_blk_tags = 1,
122         .track_queue_depth = 1,
123 };
124 
125 static void
126 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
127 {
128         if (timeout)
129                 rport->dev_loss_tmo = timeout;
130         else
131                 rport->dev_loss_tmo = 1;
132 }
133 
134 static void fnic_get_host_speed(struct Scsi_Host *shost);
135 static struct scsi_transport_template *fnic_fc_transport;
136 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
137 static void fnic_reset_host_stats(struct Scsi_Host *);
138 
139 static struct fc_function_template fnic_fc_functions = {
140 
141         .show_host_node_name = 1,
142         .show_host_port_name = 1,
143         .show_host_supported_classes = 1,
144         .show_host_supported_fc4s = 1,
145         .show_host_active_fc4s = 1,
146         .show_host_maxframe_size = 1,
147         .show_host_port_id = 1,
148         .show_host_supported_speeds = 1,
149         .get_host_speed = fnic_get_host_speed,
150         .show_host_speed = 1,
151         .show_host_port_type = 1,
152         .get_host_port_state = fc_get_host_port_state,
153         .show_host_port_state = 1,
154         .show_host_symbolic_name = 1,
155         .show_rport_maxframe_size = 1,
156         .show_rport_supported_classes = 1,
157         .show_host_fabric_name = 1,
158         .show_starget_node_name = 1,
159         .show_starget_port_name = 1,
160         .show_starget_port_id = 1,
161         .show_rport_dev_loss_tmo = 1,
162         .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
163         .issue_fc_host_lip = fnic_reset,
164         .get_fc_host_stats = fnic_get_stats,
165         .reset_fc_host_stats = fnic_reset_host_stats,
166         .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
167         .terminate_rport_io = fnic_terminate_rport_io,
168         .bsg_request = fc_lport_bsg_request,
169 };
170 
171 static void fnic_get_host_speed(struct Scsi_Host *shost)
172 {
173         struct fc_lport *lp = shost_priv(shost);
174         struct fnic *fnic = lport_priv(lp);
175         u32 port_speed = vnic_dev_port_speed(fnic->vdev);
176 
177         /* Add in other values as they get defined in fw */
178         switch (port_speed) {
179         case 10000:
180                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
181                 break;
182         default:
183                 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
184                 break;
185         }
186 }
187 
188 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
189 {
190         int ret;
191         struct fc_lport *lp = shost_priv(host);
192         struct fnic *fnic = lport_priv(lp);
193         struct fc_host_statistics *stats = &lp->host_stats;
194         struct vnic_stats *vs;
195         unsigned long flags;
196 
197         if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
198                 return stats;
199         fnic->stats_time = jiffies;
200 
201         spin_lock_irqsave(&fnic->fnic_lock, flags);
202         ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
203         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
204 
205         if (ret) {
206                 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
207                               "fnic: Get vnic stats failed"
208                               " 0x%x", ret);
209                 return stats;
210         }
211         vs = fnic->stats;
212         stats->tx_frames = vs->tx.tx_unicast_frames_ok;
213         stats->tx_words  = vs->tx.tx_unicast_bytes_ok / 4;
214         stats->rx_frames = vs->rx.rx_unicast_frames_ok;
215         stats->rx_words  = vs->rx.rx_unicast_bytes_ok / 4;
216         stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
217         stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
218         stats->invalid_crc_count = vs->rx.rx_crc_errors;
219         stats->seconds_since_last_reset =
220                         (jiffies - fnic->stats_reset_time) / HZ;
221         stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
222         stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
223 
224         return stats;
225 }
226 
227 /*
228  * fnic_dump_fchost_stats
229  * note : dumps fc_statistics into system logs
230  */
231 void fnic_dump_fchost_stats(struct Scsi_Host *host,
232                                 struct fc_host_statistics *stats)
233 {
234         FNIC_MAIN_NOTE(KERN_NOTICE, host,
235                         "fnic: seconds since last reset = %llu\n",
236                         stats->seconds_since_last_reset);
237         FNIC_MAIN_NOTE(KERN_NOTICE, host,
238                         "fnic: tx frames                = %llu\n",
239                         stats->tx_frames);
240         FNIC_MAIN_NOTE(KERN_NOTICE, host,
241                         "fnic: tx words         = %llu\n",
242                         stats->tx_words);
243         FNIC_MAIN_NOTE(KERN_NOTICE, host,
244                         "fnic: rx frames                = %llu\n",
245                         stats->rx_frames);
246         FNIC_MAIN_NOTE(KERN_NOTICE, host,
247                         "fnic: rx words         = %llu\n",
248                         stats->rx_words);
249         FNIC_MAIN_NOTE(KERN_NOTICE, host,
250                         "fnic: lip count                = %llu\n",
251                         stats->lip_count);
252         FNIC_MAIN_NOTE(KERN_NOTICE, host,
253                         "fnic: nos count                = %llu\n",
254                         stats->nos_count);
255         FNIC_MAIN_NOTE(KERN_NOTICE, host,
256                         "fnic: error frames             = %llu\n",
257                         stats->error_frames);
258         FNIC_MAIN_NOTE(KERN_NOTICE, host,
259                         "fnic: dumped frames    = %llu\n",
260                         stats->dumped_frames);
261         FNIC_MAIN_NOTE(KERN_NOTICE, host,
262                         "fnic: link failure count       = %llu\n",
263                         stats->link_failure_count);
264         FNIC_MAIN_NOTE(KERN_NOTICE, host,
265                         "fnic: loss of sync count       = %llu\n",
266                         stats->loss_of_sync_count);
267         FNIC_MAIN_NOTE(KERN_NOTICE, host,
268                         "fnic: loss of signal count     = %llu\n",
269                         stats->loss_of_signal_count);
270         FNIC_MAIN_NOTE(KERN_NOTICE, host,
271                         "fnic: prim seq protocol err count = %llu\n",
272                         stats->prim_seq_protocol_err_count);
273         FNIC_MAIN_NOTE(KERN_NOTICE, host,
274                         "fnic: invalid tx word count= %llu\n",
275                         stats->invalid_tx_word_count);
276         FNIC_MAIN_NOTE(KERN_NOTICE, host,
277                         "fnic: invalid crc count        = %llu\n",
278                         stats->invalid_crc_count);
279         FNIC_MAIN_NOTE(KERN_NOTICE, host,
280                         "fnic: fcp input requests       = %llu\n",
281                         stats->fcp_input_requests);
282         FNIC_MAIN_NOTE(KERN_NOTICE, host,
283                         "fnic: fcp output requests      = %llu\n",
284                         stats->fcp_output_requests);
285         FNIC_MAIN_NOTE(KERN_NOTICE, host,
286                         "fnic: fcp control requests     = %llu\n",
287                         stats->fcp_control_requests);
288         FNIC_MAIN_NOTE(KERN_NOTICE, host,
289                         "fnic: fcp input megabytes      = %llu\n",
290                         stats->fcp_input_megabytes);
291         FNIC_MAIN_NOTE(KERN_NOTICE, host,
292                         "fnic: fcp output megabytes     = %llu\n",
293                         stats->fcp_output_megabytes);
294         return;
295 }
296 
297 /*
298  * fnic_reset_host_stats : clears host stats
299  * note : called when reset_statistics set under sysfs dir
300  */
301 static void fnic_reset_host_stats(struct Scsi_Host *host)
302 {
303         int ret;
304         struct fc_lport *lp = shost_priv(host);
305         struct fnic *fnic = lport_priv(lp);
306         struct fc_host_statistics *stats;
307         unsigned long flags;
308 
309         /* dump current stats, before clearing them */
310         stats = fnic_get_stats(host);
311         fnic_dump_fchost_stats(host, stats);
312 
313         spin_lock_irqsave(&fnic->fnic_lock, flags);
314         ret = vnic_dev_stats_clear(fnic->vdev);
315         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
316 
317         if (ret) {
318                 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host,
319                                 "fnic: Reset vnic stats failed"
320                                 " 0x%x", ret);
321                 return;
322         }
323         fnic->stats_reset_time = jiffies;
324         memset(stats, 0, sizeof(*stats));
325 
326         return;
327 }
328 
329 void fnic_log_q_error(struct fnic *fnic)
330 {
331         unsigned int i;
332         u32 error_status;
333 
334         for (i = 0; i < fnic->raw_wq_count; i++) {
335                 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
336                 if (error_status)
337                         shost_printk(KERN_ERR, fnic->lport->host,
338                                      "WQ[%d] error_status"
339                                      " %d\n", i, error_status);
340         }
341 
342         for (i = 0; i < fnic->rq_count; i++) {
343                 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
344                 if (error_status)
345                         shost_printk(KERN_ERR, fnic->lport->host,
346                                      "RQ[%d] error_status"
347                                      " %d\n", i, error_status);
348         }
349 
350         for (i = 0; i < fnic->wq_copy_count; i++) {
351                 error_status = ioread32(&fnic->wq_copy[i].ctrl->error_status);
352                 if (error_status)
353                         shost_printk(KERN_ERR, fnic->lport->host,
354                                      "CWQ[%d] error_status"
355                                      " %d\n", i, error_status);
356         }
357 }
358 
359 void fnic_handle_link_event(struct fnic *fnic)
360 {
361         unsigned long flags;
362 
363         spin_lock_irqsave(&fnic->fnic_lock, flags);
364         if (fnic->stop_rx_link_events) {
365                 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
366                 return;
367         }
368         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
369 
370         queue_work(fnic_event_queue, &fnic->link_work);
371 
372 }
373 
374 static int fnic_notify_set(struct fnic *fnic)
375 {
376         int err;
377 
378         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
379         case VNIC_DEV_INTR_MODE_INTX:
380                 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
381                 break;
382         case VNIC_DEV_INTR_MODE_MSI:
383                 err = vnic_dev_notify_set(fnic->vdev, -1);
384                 break;
385         case VNIC_DEV_INTR_MODE_MSIX:
386                 err = vnic_dev_notify_set(fnic->vdev, FNIC_MSIX_ERR_NOTIFY);
387                 break;
388         default:
389                 shost_printk(KERN_ERR, fnic->lport->host,
390                              "Interrupt mode should be set up"
391                              " before devcmd notify set %d\n",
392                              vnic_dev_get_intr_mode(fnic->vdev));
393                 err = -1;
394                 break;
395         }
396 
397         return err;
398 }
399 
400 static void fnic_notify_timer(unsigned long data)
401 {
402         struct fnic *fnic = (struct fnic *)data;
403 
404         fnic_handle_link_event(fnic);
405         mod_timer(&fnic->notify_timer,
406                   round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
407 }
408 
409 static void fnic_fip_notify_timer(unsigned long data)
410 {
411         struct fnic *fnic = (struct fnic *)data;
412 
413         fnic_handle_fip_timer(fnic);
414 }
415 
416 static void fnic_notify_timer_start(struct fnic *fnic)
417 {
418         switch (vnic_dev_get_intr_mode(fnic->vdev)) {
419         case VNIC_DEV_INTR_MODE_MSI:
420                 /*
421                  * Schedule first timeout immediately. The driver is
422                  * initiatialized and ready to look for link up notification
423                  */
424                 mod_timer(&fnic->notify_timer, jiffies);
425                 break;
426         default:
427                 /* Using intr for notification for INTx/MSI-X */
428                 break;
429         };
430 }
431 
432 static int fnic_dev_wait(struct vnic_dev *vdev,
433                          int (*start)(struct vnic_dev *, int),
434                          int (*finished)(struct vnic_dev *, int *),
435                          int arg)
436 {
437         unsigned long time;
438         int done;
439         int err;
440         int count;
441 
442         count = 0;
443 
444         err = start(vdev, arg);
445         if (err)
446                 return err;
447 
448         /* Wait for func to complete.
449         * Sometime schedule_timeout_uninterruptible take long time
450         * to wake up so we do not retry as we are only waiting for
451         * 2 seconds in while loop. By adding count, we make sure
452         * we try atleast three times before returning -ETIMEDOUT
453         */
454         time = jiffies + (HZ * 2);
455         do {
456                 err = finished(vdev, &done);
457                 count++;
458                 if (err)
459                         return err;
460                 if (done)
461                         return 0;
462                 schedule_timeout_uninterruptible(HZ / 10);
463         } while (time_after(time, jiffies) || (count < 3));
464 
465         return -ETIMEDOUT;
466 }
467 
468 static int fnic_cleanup(struct fnic *fnic)
469 {
470         unsigned int i;
471         int err;
472 
473         vnic_dev_disable(fnic->vdev);
474         for (i = 0; i < fnic->intr_count; i++)
475                 vnic_intr_mask(&fnic->intr[i]);
476 
477         for (i = 0; i < fnic->rq_count; i++) {
478                 err = vnic_rq_disable(&fnic->rq[i]);
479                 if (err)
480                         return err;
481         }
482         for (i = 0; i < fnic->raw_wq_count; i++) {
483                 err = vnic_wq_disable(&fnic->wq[i]);
484                 if (err)
485                         return err;
486         }
487         for (i = 0; i < fnic->wq_copy_count; i++) {
488                 err = vnic_wq_copy_disable(&fnic->wq_copy[i]);
489                 if (err)
490                         return err;
491         }
492 
493         /* Clean up completed IOs and FCS frames */
494         fnic_wq_copy_cmpl_handler(fnic, -1);
495         fnic_wq_cmpl_handler(fnic, -1);
496         fnic_rq_cmpl_handler(fnic, -1);
497 
498         /* Clean up the IOs and FCS frames that have not completed */
499         for (i = 0; i < fnic->raw_wq_count; i++)
500                 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
501         for (i = 0; i < fnic->rq_count; i++)
502                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
503         for (i = 0; i < fnic->wq_copy_count; i++)
504                 vnic_wq_copy_clean(&fnic->wq_copy[i],
505                                    fnic_wq_copy_cleanup_handler);
506 
507         for (i = 0; i < fnic->cq_count; i++)
508                 vnic_cq_clean(&fnic->cq[i]);
509         for (i = 0; i < fnic->intr_count; i++)
510                 vnic_intr_clean(&fnic->intr[i]);
511 
512         mempool_destroy(fnic->io_req_pool);
513         for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
514                 mempool_destroy(fnic->io_sgl_pool[i]);
515 
516         return 0;
517 }
518 
519 static void fnic_iounmap(struct fnic *fnic)
520 {
521         if (fnic->bar0.vaddr)
522                 iounmap(fnic->bar0.vaddr);
523 }
524 
525 /**
526  * fnic_get_mac() - get assigned data MAC address for FIP code.
527  * @lport:      local port.
528  */
529 static u8 *fnic_get_mac(struct fc_lport *lport)
530 {
531         struct fnic *fnic = lport_priv(lport);
532 
533         return fnic->data_src_addr;
534 }
535 
536 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
537 {
538         u16 old_vlan;
539         old_vlan = vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
540 }
541 
542 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
543 {
544         struct Scsi_Host *host;
545         struct fc_lport *lp;
546         struct fnic *fnic;
547         mempool_t *pool;
548         int err;
549         int i;
550         unsigned long flags;
551 
552         /*
553          * Allocate SCSI Host and set up association between host,
554          * local port, and fnic
555          */
556         lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
557         if (!lp) {
558                 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
559                 err = -ENOMEM;
560                 goto err_out;
561         }
562         host = lp->host;
563         fnic = lport_priv(lp);
564         fnic->lport = lp;
565         fnic->ctlr.lp = lp;
566 
567         snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
568                  host->host_no);
569 
570         host->transportt = fnic_fc_transport;
571 
572         err = fnic_stats_debugfs_init(fnic);
573         if (err) {
574                 shost_printk(KERN_ERR, fnic->lport->host,
575                                 "Failed to initialize debugfs for stats\n");
576                 fnic_stats_debugfs_remove(fnic);
577         }
578 
579         /* Setup PCI resources */
580         pci_set_drvdata(pdev, fnic);
581 
582         fnic->pdev = pdev;
583 
584         err = pci_enable_device(pdev);
585         if (err) {
586                 shost_printk(KERN_ERR, fnic->lport->host,
587                              "Cannot enable PCI device, aborting.\n");
588                 goto err_out_free_hba;
589         }
590 
591         err = pci_request_regions(pdev, DRV_NAME);
592         if (err) {
593                 shost_printk(KERN_ERR, fnic->lport->host,
594                              "Cannot enable PCI resources, aborting\n");
595                 goto err_out_disable_device;
596         }
597 
598         pci_set_master(pdev);
599 
600         /* Query PCI controller on system for DMA addressing
601          * limitation for the device.  Try 64-bit first, and
602          * fail to 32-bit.
603          */
604         err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
605         if (err) {
606                 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
607                 if (err) {
608                         shost_printk(KERN_ERR, fnic->lport->host,
609                                      "No usable DMA configuration "
610                                      "aborting\n");
611                         goto err_out_release_regions;
612                 }
613                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
614                 if (err) {
615                         shost_printk(KERN_ERR, fnic->lport->host,
616                                      "Unable to obtain 32-bit DMA "
617                                      "for consistent allocations, aborting.\n");
618                         goto err_out_release_regions;
619                 }
620         } else {
621                 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
622                 if (err) {
623                         shost_printk(KERN_ERR, fnic->lport->host,
624                                      "Unable to obtain 64-bit DMA "
625                                      "for consistent allocations, aborting.\n");
626                         goto err_out_release_regions;
627                 }
628         }
629 
630         /* Map vNIC resources from BAR0 */
631         if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
632                 shost_printk(KERN_ERR, fnic->lport->host,
633                              "BAR0 not memory-map'able, aborting.\n");
634                 err = -ENODEV;
635                 goto err_out_release_regions;
636         }
637 
638         fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
639         fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
640         fnic->bar0.len = pci_resource_len(pdev, 0);
641 
642         if (!fnic->bar0.vaddr) {
643                 shost_printk(KERN_ERR, fnic->lport->host,
644                              "Cannot memory-map BAR0 res hdr, "
645                              "aborting.\n");
646                 err = -ENODEV;
647                 goto err_out_release_regions;
648         }
649 
650         fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
651         if (!fnic->vdev) {
652                 shost_printk(KERN_ERR, fnic->lport->host,
653                              "vNIC registration failed, "
654                              "aborting.\n");
655                 err = -ENODEV;
656                 goto err_out_iounmap;
657         }
658 
659         err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
660                             vnic_dev_open_done, 0);
661         if (err) {
662                 shost_printk(KERN_ERR, fnic->lport->host,
663                              "vNIC dev open failed, aborting.\n");
664                 goto err_out_vnic_unregister;
665         }
666 
667         err = vnic_dev_init(fnic->vdev, 0);
668         if (err) {
669                 shost_printk(KERN_ERR, fnic->lport->host,
670                              "vNIC dev init failed, aborting.\n");
671                 goto err_out_dev_close;
672         }
673 
674         err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
675         if (err) {
676                 shost_printk(KERN_ERR, fnic->lport->host,
677                              "vNIC get MAC addr failed \n");
678                 goto err_out_dev_close;
679         }
680         /* set data_src for point-to-point mode and to keep it non-zero */
681         memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
682 
683         /* Get vNIC configuration */
684         err = fnic_get_vnic_config(fnic);
685         if (err) {
686                 shost_printk(KERN_ERR, fnic->lport->host,
687                              "Get vNIC configuration failed, "
688                              "aborting.\n");
689                 goto err_out_dev_close;
690         }
691 
692         /* Configure Maximum Outstanding IO reqs*/
693         if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) {
694                 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
695                                         max_t(u32, FNIC_MIN_IO_REQ,
696                                         fnic->config.io_throttle_count));
697         }
698         fnic->fnic_max_tag_id = host->can_queue;
699 
700         err = scsi_init_shared_tag_map(host, fnic->fnic_max_tag_id);
701         if (err) {
702                 shost_printk(KERN_ERR, fnic->lport->host,
703                           "Unable to alloc shared tag map\n");
704                 goto err_out_dev_close;
705         }
706 
707         host->max_lun = fnic->config.luns_per_tgt;
708         host->max_id = FNIC_MAX_FCP_TARGET;
709         host->max_cmd_len = FCOE_MAX_CMD_LEN;
710 
711         fnic_get_res_counts(fnic);
712 
713         err = fnic_set_intr_mode(fnic);
714         if (err) {
715                 shost_printk(KERN_ERR, fnic->lport->host,
716                              "Failed to set intr mode, "
717                              "aborting.\n");
718                 goto err_out_dev_close;
719         }
720 
721         err = fnic_alloc_vnic_resources(fnic);
722         if (err) {
723                 shost_printk(KERN_ERR, fnic->lport->host,
724                              "Failed to alloc vNIC resources, "
725                              "aborting.\n");
726                 goto err_out_clear_intr;
727         }
728 
729 
730         /* initialize all fnic locks */
731         spin_lock_init(&fnic->fnic_lock);
732 
733         for (i = 0; i < FNIC_WQ_MAX; i++)
734                 spin_lock_init(&fnic->wq_lock[i]);
735 
736         for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
737                 spin_lock_init(&fnic->wq_copy_lock[i]);
738                 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
739                 fnic->fw_ack_recd[i] = 0;
740                 fnic->fw_ack_index[i] = -1;
741         }
742 
743         for (i = 0; i < FNIC_IO_LOCKS; i++)
744                 spin_lock_init(&fnic->io_req_lock[i]);
745 
746         fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
747         if (!fnic->io_req_pool)
748                 goto err_out_free_resources;
749 
750         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
751         if (!pool)
752                 goto err_out_free_ioreq_pool;
753         fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
754 
755         pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
756         if (!pool)
757                 goto err_out_free_dflt_pool;
758         fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
759 
760         /* setup vlan config, hw inserts vlan header */
761         fnic->vlan_hw_insert = 1;
762         fnic->vlan_id = 0;
763 
764         /* Initialize the FIP fcoe_ctrl struct */
765         fnic->ctlr.send = fnic_eth_send;
766         fnic->ctlr.update_mac = fnic_update_mac;
767         fnic->ctlr.get_src_addr = fnic_get_mac;
768         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
769                 shost_printk(KERN_INFO, fnic->lport->host,
770                              "firmware supports FIP\n");
771                 /* enable directed and multicast */
772                 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
773                 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
774                 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
775                 fnic->set_vlan = fnic_set_vlan;
776                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
777                 setup_timer(&fnic->fip_timer, fnic_fip_notify_timer,
778                                                         (unsigned long)fnic);
779                 spin_lock_init(&fnic->vlans_lock);
780                 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
781                 INIT_WORK(&fnic->event_work, fnic_handle_event);
782                 skb_queue_head_init(&fnic->fip_frame_queue);
783                 INIT_LIST_HEAD(&fnic->evlist);
784                 INIT_LIST_HEAD(&fnic->vlans);
785         } else {
786                 shost_printk(KERN_INFO, fnic->lport->host,
787                              "firmware uses non-FIP mode\n");
788                 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
789                 fnic->ctlr.state = FIP_ST_NON_FIP;
790         }
791         fnic->state = FNIC_IN_FC_MODE;
792 
793         atomic_set(&fnic->in_flight, 0);
794         fnic->state_flags = FNIC_FLAGS_NONE;
795 
796         /* Enable hardware stripping of vlan header on ingress */
797         fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
798 
799         /* Setup notification buffer area */
800         err = fnic_notify_set(fnic);
801         if (err) {
802                 shost_printk(KERN_ERR, fnic->lport->host,
803                              "Failed to alloc notify buffer, aborting.\n");
804                 goto err_out_free_max_pool;
805         }
806 
807         /* Setup notify timer when using MSI interrupts */
808         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
809                 setup_timer(&fnic->notify_timer,
810                             fnic_notify_timer, (unsigned long)fnic);
811 
812         /* allocate RQ buffers and post them to RQ*/
813         for (i = 0; i < fnic->rq_count; i++) {
814                 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
815                 if (err) {
816                         shost_printk(KERN_ERR, fnic->lport->host,
817                                      "fnic_alloc_rq_frame can't alloc "
818                                      "frame\n");
819                         goto err_out_free_rq_buf;
820                 }
821         }
822 
823         /*
824          * Initialization done with PCI system, hardware, firmware.
825          * Add host to SCSI
826          */
827         err = scsi_add_host(lp->host, &pdev->dev);
828         if (err) {
829                 shost_printk(KERN_ERR, fnic->lport->host,
830                              "fnic: scsi_add_host failed...exiting\n");
831                 goto err_out_free_rq_buf;
832         }
833 
834         /* Start local port initiatialization */
835 
836         lp->link_up = 0;
837 
838         lp->max_retry_count = fnic->config.flogi_retries;
839         lp->max_rport_retry_count = fnic->config.plogi_retries;
840         lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
841                               FCP_SPPF_CONF_COMPL);
842         if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
843                 lp->service_params |= FCP_SPPF_RETRY;
844 
845         lp->boot_time = jiffies;
846         lp->e_d_tov = fnic->config.ed_tov;
847         lp->r_a_tov = fnic->config.ra_tov;
848         lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
849         fc_set_wwnn(lp, fnic->config.node_wwn);
850         fc_set_wwpn(lp, fnic->config.port_wwn);
851 
852         fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
853 
854         if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
855                                FCPIO_HOST_EXCH_RANGE_END, NULL)) {
856                 err = -ENOMEM;
857                 goto err_out_remove_scsi_host;
858         }
859 
860         fc_lport_init_stats(lp);
861         fnic->stats_reset_time = jiffies;
862 
863         fc_lport_config(lp);
864 
865         if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
866                        sizeof(struct fc_frame_header))) {
867                 err = -EINVAL;
868                 goto err_out_free_exch_mgr;
869         }
870         fc_host_maxframe_size(lp->host) = lp->mfs;
871         fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
872 
873         sprintf(fc_host_symbolic_name(lp->host),
874                 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
875 
876         spin_lock_irqsave(&fnic_list_lock, flags);
877         list_add_tail(&fnic->list, &fnic_list);
878         spin_unlock_irqrestore(&fnic_list_lock, flags);
879 
880         INIT_WORK(&fnic->link_work, fnic_handle_link);
881         INIT_WORK(&fnic->frame_work, fnic_handle_frame);
882         skb_queue_head_init(&fnic->frame_queue);
883         skb_queue_head_init(&fnic->tx_queue);
884 
885         /* Enable all queues */
886         for (i = 0; i < fnic->raw_wq_count; i++)
887                 vnic_wq_enable(&fnic->wq[i]);
888         for (i = 0; i < fnic->rq_count; i++)
889                 vnic_rq_enable(&fnic->rq[i]);
890         for (i = 0; i < fnic->wq_copy_count; i++)
891                 vnic_wq_copy_enable(&fnic->wq_copy[i]);
892 
893         fc_fabric_login(lp);
894 
895         vnic_dev_enable(fnic->vdev);
896 
897         err = fnic_request_intr(fnic);
898         if (err) {
899                 shost_printk(KERN_ERR, fnic->lport->host,
900                              "Unable to request irq.\n");
901                 goto err_out_free_exch_mgr;
902         }
903 
904         for (i = 0; i < fnic->intr_count; i++)
905                 vnic_intr_unmask(&fnic->intr[i]);
906 
907         fnic_notify_timer_start(fnic);
908 
909         return 0;
910 
911 err_out_free_exch_mgr:
912         fc_exch_mgr_free(lp);
913 err_out_remove_scsi_host:
914         fc_remove_host(lp->host);
915         scsi_remove_host(lp->host);
916 err_out_free_rq_buf:
917         for (i = 0; i < fnic->rq_count; i++)
918                 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
919         vnic_dev_notify_unset(fnic->vdev);
920 err_out_free_max_pool:
921         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
922 err_out_free_dflt_pool:
923         mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
924 err_out_free_ioreq_pool:
925         mempool_destroy(fnic->io_req_pool);
926 err_out_free_resources:
927         fnic_free_vnic_resources(fnic);
928 err_out_clear_intr:
929         fnic_clear_intr_mode(fnic);
930 err_out_dev_close:
931         vnic_dev_close(fnic->vdev);
932 err_out_vnic_unregister:
933         vnic_dev_unregister(fnic->vdev);
934 err_out_iounmap:
935         fnic_iounmap(fnic);
936 err_out_release_regions:
937         pci_release_regions(pdev);
938 err_out_disable_device:
939         pci_disable_device(pdev);
940 err_out_free_hba:
941         fnic_stats_debugfs_remove(fnic);
942         scsi_host_put(lp->host);
943 err_out:
944         return err;
945 }
946 
947 static void fnic_remove(struct pci_dev *pdev)
948 {
949         struct fnic *fnic = pci_get_drvdata(pdev);
950         struct fc_lport *lp = fnic->lport;
951         unsigned long flags;
952 
953         /*
954          * Mark state so that the workqueue thread stops forwarding
955          * received frames and link events to the local port. ISR and
956          * other threads that can queue work items will also stop
957          * creating work items on the fnic workqueue
958          */
959         spin_lock_irqsave(&fnic->fnic_lock, flags);
960         fnic->stop_rx_link_events = 1;
961         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
962 
963         if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
964                 del_timer_sync(&fnic->notify_timer);
965 
966         /*
967          * Flush the fnic event queue. After this call, there should
968          * be no event queued for this fnic device in the workqueue
969          */
970         flush_workqueue(fnic_event_queue);
971         skb_queue_purge(&fnic->frame_queue);
972         skb_queue_purge(&fnic->tx_queue);
973 
974         if (fnic->config.flags & VFCF_FIP_CAPABLE) {
975                 del_timer_sync(&fnic->fip_timer);
976                 skb_queue_purge(&fnic->fip_frame_queue);
977                 fnic_fcoe_reset_vlans(fnic);
978                 fnic_fcoe_evlist_free(fnic);
979         }
980 
981         /*
982          * Log off the fabric. This stops all remote ports, dns port,
983          * logs off the fabric. This flushes all rport, disc, lport work
984          * before returning
985          */
986         fc_fabric_logoff(fnic->lport);
987 
988         spin_lock_irqsave(&fnic->fnic_lock, flags);
989         fnic->in_remove = 1;
990         spin_unlock_irqrestore(&fnic->fnic_lock, flags);
991 
992         fcoe_ctlr_destroy(&fnic->ctlr);
993         fc_lport_destroy(lp);
994         fnic_stats_debugfs_remove(fnic);
995 
996         /*
997          * This stops the fnic device, masks all interrupts. Completed
998          * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
999          * cleaned up
1000          */
1001         fnic_cleanup(fnic);
1002 
1003         BUG_ON(!skb_queue_empty(&fnic->frame_queue));
1004         BUG_ON(!skb_queue_empty(&fnic->tx_queue));
1005 
1006         spin_lock_irqsave(&fnic_list_lock, flags);
1007         list_del(&fnic->list);
1008         spin_unlock_irqrestore(&fnic_list_lock, flags);
1009 
1010         fc_remove_host(fnic->lport->host);
1011         scsi_remove_host(fnic->lport->host);
1012         fc_exch_mgr_free(fnic->lport);
1013         vnic_dev_notify_unset(fnic->vdev);
1014         fnic_free_intr(fnic);
1015         fnic_free_vnic_resources(fnic);
1016         fnic_clear_intr_mode(fnic);
1017         vnic_dev_close(fnic->vdev);
1018         vnic_dev_unregister(fnic->vdev);
1019         fnic_iounmap(fnic);
1020         pci_release_regions(pdev);
1021         pci_disable_device(pdev);
1022         scsi_host_put(lp->host);
1023 }
1024 
1025 static struct pci_driver fnic_driver = {
1026         .name = DRV_NAME,
1027         .id_table = fnic_id_table,
1028         .probe = fnic_probe,
1029         .remove = fnic_remove,
1030 };
1031 
1032 static int __init fnic_init_module(void)
1033 {
1034         size_t len;
1035         int err = 0;
1036 
1037         printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
1038 
1039         /* Create debugfs entries for fnic */
1040         err = fnic_debugfs_init();
1041         if (err < 0) {
1042                 printk(KERN_ERR PFX "Failed to create fnic directory "
1043                                 "for tracing and stats logging\n");
1044                 fnic_debugfs_terminate();
1045         }
1046 
1047         /* Allocate memory for trace buffer */
1048         err = fnic_trace_buf_init();
1049         if (err < 0) {
1050                 printk(KERN_ERR PFX
1051                        "Trace buffer initialization Failed. "
1052                        "Fnic Tracing utility is disabled\n");
1053                 fnic_trace_free();
1054         }
1055 
1056     /* Allocate memory for fc trace buffer */
1057         err = fnic_fc_trace_init();
1058         if (err < 0) {
1059                 printk(KERN_ERR PFX "FC trace buffer initialization Failed "
1060                        "FC frame tracing utility is disabled\n");
1061                 fnic_fc_trace_free();
1062         }
1063 
1064         /* Create a cache for allocation of default size sgls */
1065         len = sizeof(struct fnic_dflt_sgl_list);
1066         fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
1067                 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1068                  SLAB_HWCACHE_ALIGN,
1069                  NULL);
1070         if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
1071                 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
1072                 err = -ENOMEM;
1073                 goto err_create_fnic_sgl_slab_dflt;
1074         }
1075 
1076         /* Create a cache for allocation of max size sgls*/
1077         len = sizeof(struct fnic_sgl_list);
1078         fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
1079                 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1080                   SLAB_HWCACHE_ALIGN,
1081                   NULL);
1082         if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
1083                 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
1084                 err = -ENOMEM;
1085                 goto err_create_fnic_sgl_slab_max;
1086         }
1087 
1088         /* Create a cache of io_req structs for use via mempool */
1089         fnic_io_req_cache = kmem_cache_create("fnic_io_req",
1090                                               sizeof(struct fnic_io_req),
1091                                               0, SLAB_HWCACHE_ALIGN, NULL);
1092         if (!fnic_io_req_cache) {
1093                 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
1094                 err = -ENOMEM;
1095                 goto err_create_fnic_ioreq_slab;
1096         }
1097 
1098         fnic_event_queue = create_singlethread_workqueue("fnic_event_wq");
1099         if (!fnic_event_queue) {
1100                 printk(KERN_ERR PFX "fnic work queue create failed\n");
1101                 err = -ENOMEM;
1102                 goto err_create_fnic_workq;
1103         }
1104 
1105         spin_lock_init(&fnic_list_lock);
1106         INIT_LIST_HEAD(&fnic_list);
1107 
1108         fnic_fip_queue = create_singlethread_workqueue("fnic_fip_q");
1109         if (!fnic_fip_queue) {
1110                 printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
1111                 err = -ENOMEM;
1112                 goto err_create_fip_workq;
1113         }
1114 
1115         fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
1116         if (!fnic_fc_transport) {
1117                 printk(KERN_ERR PFX "fc_attach_transport error\n");
1118                 err = -ENOMEM;
1119                 goto err_fc_transport;
1120         }
1121 
1122         /* register the driver with PCI system */
1123         err = pci_register_driver(&fnic_driver);
1124         if (err < 0) {
1125                 printk(KERN_ERR PFX "pci register error\n");
1126                 goto err_pci_register;
1127         }
1128         return err;
1129 
1130 err_pci_register:
1131         fc_release_transport(fnic_fc_transport);
1132 err_fc_transport:
1133         destroy_workqueue(fnic_fip_queue);
1134 err_create_fip_workq:
1135         destroy_workqueue(fnic_event_queue);
1136 err_create_fnic_workq:
1137         kmem_cache_destroy(fnic_io_req_cache);
1138 err_create_fnic_ioreq_slab:
1139         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1140 err_create_fnic_sgl_slab_max:
1141         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1142 err_create_fnic_sgl_slab_dflt:
1143         fnic_trace_free();
1144         fnic_fc_trace_free();
1145         fnic_debugfs_terminate();
1146         return err;
1147 }
1148 
1149 static void __exit fnic_cleanup_module(void)
1150 {
1151         pci_unregister_driver(&fnic_driver);
1152         destroy_workqueue(fnic_event_queue);
1153         if (fnic_fip_queue) {
1154                 flush_workqueue(fnic_fip_queue);
1155                 destroy_workqueue(fnic_fip_queue);
1156         }
1157         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1158         kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1159         kmem_cache_destroy(fnic_io_req_cache);
1160         fc_release_transport(fnic_fc_transport);
1161         fnic_trace_free();
1162         fnic_fc_trace_free();
1163         fnic_debugfs_terminate();
1164 }
1165 
1166 module_init(fnic_init_module);
1167 module_exit(fnic_cleanup_module);
1168 
1169 

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