1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright 2008 Cisco Systems, Inc. All rights reserved.
4 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 */
6 #include <linux/module.h>
7 #include <linux/mempool.h>
8 #include <linux/string.h>
9 #include <linux/slab.h>
10 #include <linux/errno.h>
11 #include <linux/init.h>
12 #include <linux/pci.h>
13 #include <linux/skbuff.h>
14 #include <linux/interrupt.h>
15 #include <linux/irq.h>
16 #include <linux/spinlock.h>
17 #include <linux/workqueue.h>
18 #include <linux/if_ether.h>
19 #include <linux/blk-mq-pci.h>
20 #include <scsi/fc/fc_fip.h>
21 #include <scsi/scsi_host.h>
22 #include <scsi/scsi_transport.h>
23 #include <scsi/scsi_transport_fc.h>
24 #include <scsi/scsi_tcq.h>
25 #include <scsi/libfc.h>
26 #include <scsi/fc_frame.h>
27
28 #include "vnic_dev.h"
29 #include "vnic_intr.h"
30 #include "vnic_stats.h"
31 #include "fnic_io.h"
32 #include "fnic_fip.h"
33 #include "fnic.h"
34
35 #define PCI_DEVICE_ID_CISCO_FNIC 0x0045
36
37 /* Timer to poll notification area for events. Used for MSI interrupts */
38 #define FNIC_NOTIFY_TIMER_PERIOD (2 * HZ)
39
40 static struct kmem_cache *fnic_sgl_cache[FNIC_SGL_NUM_CACHES];
41 static struct kmem_cache *fnic_io_req_cache;
42 static LIST_HEAD(fnic_list);
43 static DEFINE_SPINLOCK(fnic_list_lock);
44 static DEFINE_IDA(fnic_ida);
45
46 /* Supported devices by fnic module */
47 static struct pci_device_id fnic_id_table[] = {
48 { PCI_DEVICE(PCI_VENDOR_ID_CISCO, PCI_DEVICE_ID_CISCO_FNIC) },
49 { 0, }
50 };
51
52 MODULE_DESCRIPTION(DRV_DESCRIPTION);
53 MODULE_AUTHOR("Abhijeet Joglekar <abjoglek@cisco.com>, "
54 "Joseph R. Eykholt <jeykholt@cisco.com>");
55 MODULE_LICENSE("GPL v2");
56 MODULE_VERSION(DRV_VERSION);
57 MODULE_DEVICE_TABLE(pci, fnic_id_table);
58
59 unsigned int fnic_log_level;
60 module_param(fnic_log_level, int, S_IRUGO|S_IWUSR);
61 MODULE_PARM_DESC(fnic_log_level, "bit mask of fnic logging levels");
62
63
64 unsigned int io_completions = FNIC_DFLT_IO_COMPLETIONS;
65 module_param(io_completions, int, S_IRUGO|S_IWUSR);
66 MODULE_PARM_DESC(io_completions, "Max CQ entries to process at a time");
67
68 unsigned int fnic_trace_max_pages = 16;
69 module_param(fnic_trace_max_pages, uint, S_IRUGO|S_IWUSR);
70 MODULE_PARM_DESC(fnic_trace_max_pages, "Total allocated memory pages "
71 "for fnic trace buffer");
72
73 unsigned int fnic_fc_trace_max_pages = 64;
74 module_param(fnic_fc_trace_max_pages, uint, S_IRUGO|S_IWUSR);
75 MODULE_PARM_DESC(fnic_fc_trace_max_pages,
76 "Total allocated memory pages for fc trace buffer");
77
78 static unsigned int fnic_max_qdepth = FNIC_DFLT_QUEUE_DEPTH;
79 module_param(fnic_max_qdepth, uint, S_IRUGO|S_IWUSR);
80 MODULE_PARM_DESC(fnic_max_qdepth, "Queue depth to report for each LUN");
81
82 static struct libfc_function_template fnic_transport_template = {
83 .frame_send = fnic_send,
84 .lport_set_port_id = fnic_set_port_id,
85 .fcp_abort_io = fnic_empty_scsi_cleanup,
86 .fcp_cleanup = fnic_empty_scsi_cleanup,
87 .exch_mgr_reset = fnic_exch_mgr_reset
88 };
89
fnic_slave_alloc(struct scsi_device * sdev)90 static int fnic_slave_alloc(struct scsi_device *sdev)
91 {
92 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
93
94 if (!rport || fc_remote_port_chkready(rport))
95 return -ENXIO;
96
97 scsi_change_queue_depth(sdev, fnic_max_qdepth);
98 return 0;
99 }
100
101 static const struct scsi_host_template fnic_host_template = {
102 .module = THIS_MODULE,
103 .name = DRV_NAME,
104 .queuecommand = fnic_queuecommand,
105 .eh_timed_out = fc_eh_timed_out,
106 .eh_abort_handler = fnic_abort_cmd,
107 .eh_device_reset_handler = fnic_device_reset,
108 .eh_host_reset_handler = fnic_host_reset,
109 .slave_alloc = fnic_slave_alloc,
110 .change_queue_depth = scsi_change_queue_depth,
111 .this_id = -1,
112 .cmd_per_lun = 3,
113 .can_queue = FNIC_DFLT_IO_REQ,
114 .sg_tablesize = FNIC_MAX_SG_DESC_CNT,
115 .max_sectors = 0xffff,
116 .shost_groups = fnic_host_groups,
117 .track_queue_depth = 1,
118 .cmd_size = sizeof(struct fnic_cmd_priv),
119 .map_queues = fnic_mq_map_queues_cpus,
120 };
121
122 static void
fnic_set_rport_dev_loss_tmo(struct fc_rport * rport,u32 timeout)123 fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
124 {
125 if (timeout)
126 rport->dev_loss_tmo = timeout;
127 else
128 rport->dev_loss_tmo = 1;
129 }
130
131 static void fnic_get_host_speed(struct Scsi_Host *shost);
132 static struct scsi_transport_template *fnic_fc_transport;
133 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *);
134 static void fnic_reset_host_stats(struct Scsi_Host *);
135
136 static struct fc_function_template fnic_fc_functions = {
137
138 .show_host_node_name = 1,
139 .show_host_port_name = 1,
140 .show_host_supported_classes = 1,
141 .show_host_supported_fc4s = 1,
142 .show_host_active_fc4s = 1,
143 .show_host_maxframe_size = 1,
144 .show_host_port_id = 1,
145 .show_host_supported_speeds = 1,
146 .get_host_speed = fnic_get_host_speed,
147 .show_host_speed = 1,
148 .show_host_port_type = 1,
149 .get_host_port_state = fc_get_host_port_state,
150 .show_host_port_state = 1,
151 .show_host_symbolic_name = 1,
152 .show_rport_maxframe_size = 1,
153 .show_rport_supported_classes = 1,
154 .show_host_fabric_name = 1,
155 .show_starget_node_name = 1,
156 .show_starget_port_name = 1,
157 .show_starget_port_id = 1,
158 .show_rport_dev_loss_tmo = 1,
159 .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo,
160 .issue_fc_host_lip = fnic_reset,
161 .get_fc_host_stats = fnic_get_stats,
162 .reset_fc_host_stats = fnic_reset_host_stats,
163 .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv),
164 .terminate_rport_io = fnic_terminate_rport_io,
165 .bsg_request = fc_lport_bsg_request,
166 };
167
fnic_get_host_speed(struct Scsi_Host * shost)168 static void fnic_get_host_speed(struct Scsi_Host *shost)
169 {
170 struct fc_lport *lp = shost_priv(shost);
171 struct fnic *fnic = lport_priv(lp);
172 u32 port_speed = vnic_dev_port_speed(fnic->vdev);
173
174 /* Add in other values as they get defined in fw */
175 switch (port_speed) {
176 case DCEM_PORTSPEED_10G:
177 fc_host_speed(shost) = FC_PORTSPEED_10GBIT;
178 break;
179 case DCEM_PORTSPEED_20G:
180 fc_host_speed(shost) = FC_PORTSPEED_20GBIT;
181 break;
182 case DCEM_PORTSPEED_25G:
183 fc_host_speed(shost) = FC_PORTSPEED_25GBIT;
184 break;
185 case DCEM_PORTSPEED_40G:
186 case DCEM_PORTSPEED_4x10G:
187 fc_host_speed(shost) = FC_PORTSPEED_40GBIT;
188 break;
189 case DCEM_PORTSPEED_100G:
190 fc_host_speed(shost) = FC_PORTSPEED_100GBIT;
191 break;
192 default:
193 fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
194 break;
195 }
196 }
197
fnic_get_stats(struct Scsi_Host * host)198 static struct fc_host_statistics *fnic_get_stats(struct Scsi_Host *host)
199 {
200 int ret;
201 struct fc_lport *lp = shost_priv(host);
202 struct fnic *fnic = lport_priv(lp);
203 struct fc_host_statistics *stats = &lp->host_stats;
204 struct vnic_stats *vs;
205 unsigned long flags;
206
207 if (time_before(jiffies, fnic->stats_time + HZ / FNIC_STATS_RATE_LIMIT))
208 return stats;
209 fnic->stats_time = jiffies;
210
211 spin_lock_irqsave(&fnic->fnic_lock, flags);
212 ret = vnic_dev_stats_dump(fnic->vdev, &fnic->stats);
213 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
214
215 if (ret) {
216 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, fnic->fnic_num,
217 "fnic: Get vnic stats failed"
218 " 0x%x", ret);
219 return stats;
220 }
221 vs = fnic->stats;
222 stats->tx_frames = vs->tx.tx_unicast_frames_ok;
223 stats->tx_words = vs->tx.tx_unicast_bytes_ok / 4;
224 stats->rx_frames = vs->rx.rx_unicast_frames_ok;
225 stats->rx_words = vs->rx.rx_unicast_bytes_ok / 4;
226 stats->error_frames = vs->tx.tx_errors + vs->rx.rx_errors;
227 stats->dumped_frames = vs->tx.tx_drops + vs->rx.rx_drop;
228 stats->invalid_crc_count = vs->rx.rx_crc_errors;
229 stats->seconds_since_last_reset =
230 (jiffies - fnic->stats_reset_time) / HZ;
231 stats->fcp_input_megabytes = div_u64(fnic->fcp_input_bytes, 1000000);
232 stats->fcp_output_megabytes = div_u64(fnic->fcp_output_bytes, 1000000);
233
234 return stats;
235 }
236
237 /*
238 * fnic_dump_fchost_stats
239 * note : dumps fc_statistics into system logs
240 */
fnic_dump_fchost_stats(struct Scsi_Host * host,struct fc_host_statistics * stats)241 void fnic_dump_fchost_stats(struct Scsi_Host *host,
242 struct fc_host_statistics *stats)
243 {
244 FNIC_MAIN_NOTE(KERN_NOTICE, host,
245 "fnic: seconds since last reset = %llu\n",
246 stats->seconds_since_last_reset);
247 FNIC_MAIN_NOTE(KERN_NOTICE, host,
248 "fnic: tx frames = %llu\n",
249 stats->tx_frames);
250 FNIC_MAIN_NOTE(KERN_NOTICE, host,
251 "fnic: tx words = %llu\n",
252 stats->tx_words);
253 FNIC_MAIN_NOTE(KERN_NOTICE, host,
254 "fnic: rx frames = %llu\n",
255 stats->rx_frames);
256 FNIC_MAIN_NOTE(KERN_NOTICE, host,
257 "fnic: rx words = %llu\n",
258 stats->rx_words);
259 FNIC_MAIN_NOTE(KERN_NOTICE, host,
260 "fnic: lip count = %llu\n",
261 stats->lip_count);
262 FNIC_MAIN_NOTE(KERN_NOTICE, host,
263 "fnic: nos count = %llu\n",
264 stats->nos_count);
265 FNIC_MAIN_NOTE(KERN_NOTICE, host,
266 "fnic: error frames = %llu\n",
267 stats->error_frames);
268 FNIC_MAIN_NOTE(KERN_NOTICE, host,
269 "fnic: dumped frames = %llu\n",
270 stats->dumped_frames);
271 FNIC_MAIN_NOTE(KERN_NOTICE, host,
272 "fnic: link failure count = %llu\n",
273 stats->link_failure_count);
274 FNIC_MAIN_NOTE(KERN_NOTICE, host,
275 "fnic: loss of sync count = %llu\n",
276 stats->loss_of_sync_count);
277 FNIC_MAIN_NOTE(KERN_NOTICE, host,
278 "fnic: loss of signal count = %llu\n",
279 stats->loss_of_signal_count);
280 FNIC_MAIN_NOTE(KERN_NOTICE, host,
281 "fnic: prim seq protocol err count = %llu\n",
282 stats->prim_seq_protocol_err_count);
283 FNIC_MAIN_NOTE(KERN_NOTICE, host,
284 "fnic: invalid tx word count= %llu\n",
285 stats->invalid_tx_word_count);
286 FNIC_MAIN_NOTE(KERN_NOTICE, host,
287 "fnic: invalid crc count = %llu\n",
288 stats->invalid_crc_count);
289 FNIC_MAIN_NOTE(KERN_NOTICE, host,
290 "fnic: fcp input requests = %llu\n",
291 stats->fcp_input_requests);
292 FNIC_MAIN_NOTE(KERN_NOTICE, host,
293 "fnic: fcp output requests = %llu\n",
294 stats->fcp_output_requests);
295 FNIC_MAIN_NOTE(KERN_NOTICE, host,
296 "fnic: fcp control requests = %llu\n",
297 stats->fcp_control_requests);
298 FNIC_MAIN_NOTE(KERN_NOTICE, host,
299 "fnic: fcp input megabytes = %llu\n",
300 stats->fcp_input_megabytes);
301 FNIC_MAIN_NOTE(KERN_NOTICE, host,
302 "fnic: fcp output megabytes = %llu\n",
303 stats->fcp_output_megabytes);
304 return;
305 }
306
307 /*
308 * fnic_reset_host_stats : clears host stats
309 * note : called when reset_statistics set under sysfs dir
310 */
fnic_reset_host_stats(struct Scsi_Host * host)311 static void fnic_reset_host_stats(struct Scsi_Host *host)
312 {
313 int ret;
314 struct fc_lport *lp = shost_priv(host);
315 struct fnic *fnic = lport_priv(lp);
316 struct fc_host_statistics *stats;
317 unsigned long flags;
318
319 /* dump current stats, before clearing them */
320 stats = fnic_get_stats(host);
321 fnic_dump_fchost_stats(host, stats);
322
323 spin_lock_irqsave(&fnic->fnic_lock, flags);
324 ret = vnic_dev_stats_clear(fnic->vdev);
325 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
326
327 if (ret) {
328 FNIC_MAIN_DBG(KERN_DEBUG, fnic->lport->host, fnic->fnic_num,
329 "fnic: Reset vnic stats failed"
330 " 0x%x", ret);
331 return;
332 }
333 fnic->stats_reset_time = jiffies;
334 memset(stats, 0, sizeof(*stats));
335
336 return;
337 }
338
fnic_log_q_error(struct fnic * fnic)339 void fnic_log_q_error(struct fnic *fnic)
340 {
341 unsigned int i;
342 u32 error_status;
343
344 for (i = 0; i < fnic->raw_wq_count; i++) {
345 error_status = ioread32(&fnic->wq[i].ctrl->error_status);
346 if (error_status)
347 shost_printk(KERN_ERR, fnic->lport->host,
348 "WQ[%d] error_status"
349 " %d\n", i, error_status);
350 }
351
352 for (i = 0; i < fnic->rq_count; i++) {
353 error_status = ioread32(&fnic->rq[i].ctrl->error_status);
354 if (error_status)
355 shost_printk(KERN_ERR, fnic->lport->host,
356 "RQ[%d] error_status"
357 " %d\n", i, error_status);
358 }
359
360 for (i = 0; i < fnic->wq_copy_count; i++) {
361 error_status = ioread32(&fnic->hw_copy_wq[i].ctrl->error_status);
362 if (error_status)
363 shost_printk(KERN_ERR, fnic->lport->host,
364 "CWQ[%d] error_status"
365 " %d\n", i, error_status);
366 }
367 }
368
fnic_handle_link_event(struct fnic * fnic)369 void fnic_handle_link_event(struct fnic *fnic)
370 {
371 unsigned long flags;
372
373 spin_lock_irqsave(&fnic->fnic_lock, flags);
374 if (fnic->stop_rx_link_events) {
375 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
376 return;
377 }
378 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
379
380 queue_work(fnic_event_queue, &fnic->link_work);
381
382 }
383
fnic_notify_set(struct fnic * fnic)384 static int fnic_notify_set(struct fnic *fnic)
385 {
386 int err;
387
388 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
389 case VNIC_DEV_INTR_MODE_INTX:
390 err = vnic_dev_notify_set(fnic->vdev, FNIC_INTX_NOTIFY);
391 break;
392 case VNIC_DEV_INTR_MODE_MSI:
393 err = vnic_dev_notify_set(fnic->vdev, -1);
394 break;
395 case VNIC_DEV_INTR_MODE_MSIX:
396 err = vnic_dev_notify_set(fnic->vdev, fnic->wq_copy_count + fnic->copy_wq_base);
397 break;
398 default:
399 shost_printk(KERN_ERR, fnic->lport->host,
400 "Interrupt mode should be set up"
401 " before devcmd notify set %d\n",
402 vnic_dev_get_intr_mode(fnic->vdev));
403 err = -1;
404 break;
405 }
406
407 return err;
408 }
409
fnic_notify_timer(struct timer_list * t)410 static void fnic_notify_timer(struct timer_list *t)
411 {
412 struct fnic *fnic = from_timer(fnic, t, notify_timer);
413
414 fnic_handle_link_event(fnic);
415 mod_timer(&fnic->notify_timer,
416 round_jiffies(jiffies + FNIC_NOTIFY_TIMER_PERIOD));
417 }
418
fnic_fip_notify_timer(struct timer_list * t)419 static void fnic_fip_notify_timer(struct timer_list *t)
420 {
421 struct fnic *fnic = from_timer(fnic, t, fip_timer);
422
423 fnic_handle_fip_timer(fnic);
424 }
425
fnic_notify_timer_start(struct fnic * fnic)426 static void fnic_notify_timer_start(struct fnic *fnic)
427 {
428 switch (vnic_dev_get_intr_mode(fnic->vdev)) {
429 case VNIC_DEV_INTR_MODE_MSI:
430 /*
431 * Schedule first timeout immediately. The driver is
432 * initiatialized and ready to look for link up notification
433 */
434 mod_timer(&fnic->notify_timer, jiffies);
435 break;
436 default:
437 /* Using intr for notification for INTx/MSI-X */
438 break;
439 }
440 }
441
fnic_dev_wait(struct vnic_dev * vdev,int (* start)(struct vnic_dev *,int),int (* finished)(struct vnic_dev *,int *),int arg)442 static int fnic_dev_wait(struct vnic_dev *vdev,
443 int (*start)(struct vnic_dev *, int),
444 int (*finished)(struct vnic_dev *, int *),
445 int arg)
446 {
447 unsigned long time;
448 int done;
449 int err;
450 int count;
451
452 count = 0;
453
454 err = start(vdev, arg);
455 if (err)
456 return err;
457
458 /* Wait for func to complete.
459 * Sometime schedule_timeout_uninterruptible take long time
460 * to wake up so we do not retry as we are only waiting for
461 * 2 seconds in while loop. By adding count, we make sure
462 * we try atleast three times before returning -ETIMEDOUT
463 */
464 time = jiffies + (HZ * 2);
465 do {
466 err = finished(vdev, &done);
467 count++;
468 if (err)
469 return err;
470 if (done)
471 return 0;
472 schedule_timeout_uninterruptible(HZ / 10);
473 } while (time_after(time, jiffies) || (count < 3));
474
475 return -ETIMEDOUT;
476 }
477
fnic_cleanup(struct fnic * fnic)478 static int fnic_cleanup(struct fnic *fnic)
479 {
480 unsigned int i;
481 int err;
482 int raw_wq_rq_counts;
483
484 vnic_dev_disable(fnic->vdev);
485 for (i = 0; i < fnic->intr_count; i++)
486 vnic_intr_mask(&fnic->intr[i]);
487
488 for (i = 0; i < fnic->rq_count; i++) {
489 err = vnic_rq_disable(&fnic->rq[i]);
490 if (err)
491 return err;
492 }
493 for (i = 0; i < fnic->raw_wq_count; i++) {
494 err = vnic_wq_disable(&fnic->wq[i]);
495 if (err)
496 return err;
497 }
498 for (i = 0; i < fnic->wq_copy_count; i++) {
499 err = vnic_wq_copy_disable(&fnic->hw_copy_wq[i]);
500 if (err)
501 return err;
502 raw_wq_rq_counts = fnic->raw_wq_count + fnic->rq_count;
503 fnic_wq_copy_cmpl_handler(fnic, -1, i + raw_wq_rq_counts);
504 }
505
506 /* Clean up completed IOs and FCS frames */
507 fnic_wq_cmpl_handler(fnic, -1);
508 fnic_rq_cmpl_handler(fnic, -1);
509
510 /* Clean up the IOs and FCS frames that have not completed */
511 for (i = 0; i < fnic->raw_wq_count; i++)
512 vnic_wq_clean(&fnic->wq[i], fnic_free_wq_buf);
513 for (i = 0; i < fnic->rq_count; i++)
514 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
515 for (i = 0; i < fnic->wq_copy_count; i++)
516 vnic_wq_copy_clean(&fnic->hw_copy_wq[i],
517 fnic_wq_copy_cleanup_handler);
518
519 for (i = 0; i < fnic->cq_count; i++)
520 vnic_cq_clean(&fnic->cq[i]);
521 for (i = 0; i < fnic->intr_count; i++)
522 vnic_intr_clean(&fnic->intr[i]);
523
524 mempool_destroy(fnic->io_req_pool);
525 for (i = 0; i < FNIC_SGL_NUM_CACHES; i++)
526 mempool_destroy(fnic->io_sgl_pool[i]);
527
528 return 0;
529 }
530
fnic_iounmap(struct fnic * fnic)531 static void fnic_iounmap(struct fnic *fnic)
532 {
533 if (fnic->bar0.vaddr)
534 iounmap(fnic->bar0.vaddr);
535 }
536
537 /**
538 * fnic_get_mac() - get assigned data MAC address for FIP code.
539 * @lport: local port.
540 */
fnic_get_mac(struct fc_lport * lport)541 static u8 *fnic_get_mac(struct fc_lport *lport)
542 {
543 struct fnic *fnic = lport_priv(lport);
544
545 return fnic->data_src_addr;
546 }
547
fnic_set_vlan(struct fnic * fnic,u16 vlan_id)548 static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
549 {
550 vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
551 }
552
fnic_scsi_drv_init(struct fnic * fnic)553 static int fnic_scsi_drv_init(struct fnic *fnic)
554 {
555 struct Scsi_Host *host = fnic->lport->host;
556
557 /* Configure maximum outstanding IO reqs*/
558 if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD)
559 host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
560 max_t(u32, FNIC_MIN_IO_REQ,
561 fnic->config.io_throttle_count));
562
563 fnic->fnic_max_tag_id = host->can_queue;
564 host->max_lun = fnic->config.luns_per_tgt;
565 host->max_id = FNIC_MAX_FCP_TARGET;
566 host->max_cmd_len = FCOE_MAX_CMD_LEN;
567
568 host->nr_hw_queues = fnic->wq_copy_count;
569
570 shost_printk(KERN_INFO, host,
571 "fnic: can_queue: %d max_lun: %llu",
572 host->can_queue, host->max_lun);
573
574 shost_printk(KERN_INFO, host,
575 "fnic: max_id: %d max_cmd_len: %d nr_hw_queues: %d",
576 host->max_id, host->max_cmd_len, host->nr_hw_queues);
577
578 return 0;
579 }
580
fnic_mq_map_queues_cpus(struct Scsi_Host * host)581 void fnic_mq_map_queues_cpus(struct Scsi_Host *host)
582 {
583 struct fc_lport *lp = shost_priv(host);
584 struct fnic *fnic = lport_priv(lp);
585 struct pci_dev *l_pdev = fnic->pdev;
586 int intr_mode = fnic->config.intr_mode;
587 struct blk_mq_queue_map *qmap = &host->tag_set.map[HCTX_TYPE_DEFAULT];
588
589 if (intr_mode == VNIC_DEV_INTR_MODE_MSI || intr_mode == VNIC_DEV_INTR_MODE_INTX) {
590 FNIC_MAIN_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
591 "intr_mode is not msix\n");
592 return;
593 }
594
595 FNIC_MAIN_DBG(KERN_INFO, fnic->lport->host, fnic->fnic_num,
596 "qmap->nr_queues: %d\n", qmap->nr_queues);
597
598 if (l_pdev == NULL) {
599 FNIC_MAIN_DBG(KERN_ERR, fnic->lport->host, fnic->fnic_num,
600 "l_pdev is null\n");
601 return;
602 }
603
604 blk_mq_pci_map_queues(qmap, l_pdev, FNIC_PCI_OFFSET);
605 }
606
fnic_probe(struct pci_dev * pdev,const struct pci_device_id * ent)607 static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
608 {
609 struct Scsi_Host *host;
610 struct fc_lport *lp;
611 struct fnic *fnic;
612 mempool_t *pool;
613 int err = 0;
614 int fnic_id = 0;
615 int i;
616 unsigned long flags;
617 int hwq;
618
619 /*
620 * Allocate SCSI Host and set up association between host,
621 * local port, and fnic
622 */
623 lp = libfc_host_alloc(&fnic_host_template, sizeof(struct fnic));
624 if (!lp) {
625 printk(KERN_ERR PFX "Unable to alloc libfc local port\n");
626 err = -ENOMEM;
627 goto err_out;
628 }
629
630 host = lp->host;
631 fnic = lport_priv(lp);
632
633 fnic_id = ida_alloc(&fnic_ida, GFP_KERNEL);
634 if (fnic_id < 0) {
635 pr_err("Unable to alloc fnic ID\n");
636 err = fnic_id;
637 goto err_out_ida_alloc;
638 }
639 fnic->lport = lp;
640 fnic->ctlr.lp = lp;
641 fnic->link_events = 0;
642 fnic->pdev = pdev;
643
644 snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME,
645 host->host_no);
646
647 host->transportt = fnic_fc_transport;
648 fnic->fnic_num = fnic_id;
649 fnic_stats_debugfs_init(fnic);
650
651 err = pci_enable_device(pdev);
652 if (err) {
653 shost_printk(KERN_ERR, fnic->lport->host,
654 "Cannot enable PCI device, aborting.\n");
655 goto err_out_free_hba;
656 }
657
658 err = pci_request_regions(pdev, DRV_NAME);
659 if (err) {
660 shost_printk(KERN_ERR, fnic->lport->host,
661 "Cannot enable PCI resources, aborting\n");
662 goto err_out_disable_device;
663 }
664
665 pci_set_master(pdev);
666
667 /* Query PCI controller on system for DMA addressing
668 * limitation for the device. Try 47-bit first, and
669 * fail to 32-bit. Cisco VIC supports 47 bits only.
670 */
671 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(47));
672 if (err) {
673 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
674 if (err) {
675 shost_printk(KERN_ERR, fnic->lport->host,
676 "No usable DMA configuration "
677 "aborting\n");
678 goto err_out_release_regions;
679 }
680 }
681
682 /* Map vNIC resources from BAR0 */
683 if (!(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) {
684 shost_printk(KERN_ERR, fnic->lport->host,
685 "BAR0 not memory-map'able, aborting.\n");
686 err = -ENODEV;
687 goto err_out_release_regions;
688 }
689
690 fnic->bar0.vaddr = pci_iomap(pdev, 0, 0);
691 fnic->bar0.bus_addr = pci_resource_start(pdev, 0);
692 fnic->bar0.len = pci_resource_len(pdev, 0);
693
694 if (!fnic->bar0.vaddr) {
695 shost_printk(KERN_ERR, fnic->lport->host,
696 "Cannot memory-map BAR0 res hdr, "
697 "aborting.\n");
698 err = -ENODEV;
699 goto err_out_release_regions;
700 }
701
702 fnic->vdev = vnic_dev_register(NULL, fnic, pdev, &fnic->bar0);
703 if (!fnic->vdev) {
704 shost_printk(KERN_ERR, fnic->lport->host,
705 "vNIC registration failed, "
706 "aborting.\n");
707 err = -ENODEV;
708 goto err_out_iounmap;
709 }
710
711 err = vnic_dev_cmd_init(fnic->vdev);
712 if (err) {
713 shost_printk(KERN_ERR, fnic->lport->host,
714 "vnic_dev_cmd_init() returns %d, aborting\n",
715 err);
716 goto err_out_vnic_unregister;
717 }
718
719 err = fnic_dev_wait(fnic->vdev, vnic_dev_open,
720 vnic_dev_open_done, CMD_OPENF_RQ_ENABLE_THEN_POST);
721 if (err) {
722 shost_printk(KERN_ERR, fnic->lport->host,
723 "vNIC dev open failed, aborting.\n");
724 goto err_out_dev_cmd_deinit;
725 }
726
727 err = vnic_dev_init(fnic->vdev, 0);
728 if (err) {
729 shost_printk(KERN_ERR, fnic->lport->host,
730 "vNIC dev init failed, aborting.\n");
731 goto err_out_dev_close;
732 }
733
734 err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
735 if (err) {
736 shost_printk(KERN_ERR, fnic->lport->host,
737 "vNIC get MAC addr failed \n");
738 goto err_out_dev_close;
739 }
740 /* set data_src for point-to-point mode and to keep it non-zero */
741 memcpy(fnic->data_src_addr, fnic->ctlr.ctl_src_addr, ETH_ALEN);
742
743 /* Get vNIC configuration */
744 err = fnic_get_vnic_config(fnic);
745 if (err) {
746 shost_printk(KERN_ERR, fnic->lport->host,
747 "Get vNIC configuration failed, "
748 "aborting.\n");
749 goto err_out_dev_close;
750 }
751
752 /* Setup PCI resources */
753 pci_set_drvdata(pdev, fnic);
754
755 fnic_get_res_counts(fnic);
756
757 err = fnic_set_intr_mode(fnic);
758 if (err) {
759 shost_printk(KERN_ERR, fnic->lport->host,
760 "Failed to set intr mode, "
761 "aborting.\n");
762 goto err_out_dev_close;
763 }
764
765 err = fnic_alloc_vnic_resources(fnic);
766 if (err) {
767 shost_printk(KERN_ERR, fnic->lport->host,
768 "Failed to alloc vNIC resources, "
769 "aborting.\n");
770 goto err_out_clear_intr;
771 }
772
773 fnic_scsi_drv_init(fnic);
774
775 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++) {
776 fnic->sw_copy_wq[hwq].ioreq_table_size = fnic->fnic_max_tag_id;
777 fnic->sw_copy_wq[hwq].io_req_table =
778 kzalloc((fnic->sw_copy_wq[hwq].ioreq_table_size + 1) *
779 sizeof(struct fnic_io_req *), GFP_KERNEL);
780 }
781 shost_printk(KERN_INFO, fnic->lport->host, "fnic copy wqs: %d, Q0 ioreq table size: %d\n",
782 fnic->wq_copy_count, fnic->sw_copy_wq[0].ioreq_table_size);
783
784 /* initialize all fnic locks */
785 spin_lock_init(&fnic->fnic_lock);
786
787 for (i = 0; i < FNIC_WQ_MAX; i++)
788 spin_lock_init(&fnic->wq_lock[i]);
789
790 for (i = 0; i < FNIC_WQ_COPY_MAX; i++) {
791 spin_lock_init(&fnic->wq_copy_lock[i]);
792 fnic->wq_copy_desc_low[i] = DESC_CLEAN_LOW_WATERMARK;
793 fnic->fw_ack_recd[i] = 0;
794 fnic->fw_ack_index[i] = -1;
795 }
796
797 err = -ENOMEM;
798 fnic->io_req_pool = mempool_create_slab_pool(2, fnic_io_req_cache);
799 if (!fnic->io_req_pool)
800 goto err_out_free_resources;
801
802 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
803 if (!pool)
804 goto err_out_free_ioreq_pool;
805 fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool;
806
807 pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
808 if (!pool)
809 goto err_out_free_dflt_pool;
810 fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX] = pool;
811
812 /* setup vlan config, hw inserts vlan header */
813 fnic->vlan_hw_insert = 1;
814 fnic->vlan_id = 0;
815
816 /* Initialize the FIP fcoe_ctrl struct */
817 fnic->ctlr.send = fnic_eth_send;
818 fnic->ctlr.update_mac = fnic_update_mac;
819 fnic->ctlr.get_src_addr = fnic_get_mac;
820 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
821 shost_printk(KERN_INFO, fnic->lport->host,
822 "firmware supports FIP\n");
823 /* enable directed and multicast */
824 vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0);
825 vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS);
826 vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr);
827 fnic->set_vlan = fnic_set_vlan;
828 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO);
829 timer_setup(&fnic->fip_timer, fnic_fip_notify_timer, 0);
830 spin_lock_init(&fnic->vlans_lock);
831 INIT_WORK(&fnic->fip_frame_work, fnic_handle_fip_frame);
832 INIT_WORK(&fnic->event_work, fnic_handle_event);
833 skb_queue_head_init(&fnic->fip_frame_queue);
834 INIT_LIST_HEAD(&fnic->evlist);
835 INIT_LIST_HEAD(&fnic->vlans);
836 } else {
837 shost_printk(KERN_INFO, fnic->lport->host,
838 "firmware uses non-FIP mode\n");
839 fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP);
840 fnic->ctlr.state = FIP_ST_NON_FIP;
841 }
842 fnic->state = FNIC_IN_FC_MODE;
843
844 atomic_set(&fnic->in_flight, 0);
845 fnic->state_flags = FNIC_FLAGS_NONE;
846
847 /* Enable hardware stripping of vlan header on ingress */
848 fnic_set_nic_config(fnic, 0, 0, 0, 0, 0, 0, 1);
849
850 /* Setup notification buffer area */
851 err = fnic_notify_set(fnic);
852 if (err) {
853 shost_printk(KERN_ERR, fnic->lport->host,
854 "Failed to alloc notify buffer, aborting.\n");
855 goto err_out_free_max_pool;
856 }
857
858 /* Setup notify timer when using MSI interrupts */
859 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
860 timer_setup(&fnic->notify_timer, fnic_notify_timer, 0);
861
862 /* allocate RQ buffers and post them to RQ*/
863 for (i = 0; i < fnic->rq_count; i++) {
864 err = vnic_rq_fill(&fnic->rq[i], fnic_alloc_rq_frame);
865 if (err) {
866 shost_printk(KERN_ERR, fnic->lport->host,
867 "fnic_alloc_rq_frame can't alloc "
868 "frame\n");
869 goto err_out_rq_buf;
870 }
871 }
872
873 /* Enable all queues */
874 for (i = 0; i < fnic->raw_wq_count; i++)
875 vnic_wq_enable(&fnic->wq[i]);
876 for (i = 0; i < fnic->rq_count; i++) {
877 if (!ioread32(&fnic->rq[i].ctrl->enable))
878 vnic_rq_enable(&fnic->rq[i]);
879 }
880 for (i = 0; i < fnic->wq_copy_count; i++)
881 vnic_wq_copy_enable(&fnic->hw_copy_wq[i]);
882
883 err = fnic_request_intr(fnic);
884 if (err) {
885 shost_printk(KERN_ERR, fnic->lport->host,
886 "Unable to request irq.\n");
887 goto err_out_request_intr;
888 }
889
890 /*
891 * Initialization done with PCI system, hardware, firmware.
892 * Add host to SCSI
893 */
894 err = scsi_add_host(lp->host, &pdev->dev);
895 if (err) {
896 shost_printk(KERN_ERR, fnic->lport->host,
897 "fnic: scsi_add_host failed...exiting\n");
898 goto err_out_scsi_add_host;
899 }
900
901
902 /* Start local port initiatialization */
903
904 lp->link_up = 0;
905
906 lp->max_retry_count = fnic->config.flogi_retries;
907 lp->max_rport_retry_count = fnic->config.plogi_retries;
908 lp->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
909 FCP_SPPF_CONF_COMPL);
910 if (fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR)
911 lp->service_params |= FCP_SPPF_RETRY;
912
913 lp->boot_time = jiffies;
914 lp->e_d_tov = fnic->config.ed_tov;
915 lp->r_a_tov = fnic->config.ra_tov;
916 lp->link_supported_speeds = FC_PORTSPEED_10GBIT;
917 fc_set_wwnn(lp, fnic->config.node_wwn);
918 fc_set_wwpn(lp, fnic->config.port_wwn);
919
920 fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0);
921
922 if (!fc_exch_mgr_alloc(lp, FC_CLASS_3, FCPIO_HOST_EXCH_RANGE_START,
923 FCPIO_HOST_EXCH_RANGE_END, NULL)) {
924 err = -ENOMEM;
925 goto err_out_fc_exch_mgr_alloc;
926 }
927
928 fc_lport_init_stats(lp);
929 fnic->stats_reset_time = jiffies;
930
931 fc_lport_config(lp);
932
933 if (fc_set_mfs(lp, fnic->config.maxdatafieldsize +
934 sizeof(struct fc_frame_header))) {
935 err = -EINVAL;
936 goto err_out_free_exch_mgr;
937 }
938 fc_host_maxframe_size(lp->host) = lp->mfs;
939 fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000;
940
941 sprintf(fc_host_symbolic_name(lp->host),
942 DRV_NAME " v" DRV_VERSION " over %s", fnic->name);
943
944 spin_lock_irqsave(&fnic_list_lock, flags);
945 list_add_tail(&fnic->list, &fnic_list);
946 spin_unlock_irqrestore(&fnic_list_lock, flags);
947
948 INIT_WORK(&fnic->link_work, fnic_handle_link);
949 INIT_WORK(&fnic->frame_work, fnic_handle_frame);
950 INIT_WORK(&fnic->flush_work, fnic_flush_tx);
951 skb_queue_head_init(&fnic->frame_queue);
952 skb_queue_head_init(&fnic->tx_queue);
953
954 fc_fabric_login(lp);
955
956 vnic_dev_enable(fnic->vdev);
957
958 for (i = 0; i < fnic->intr_count; i++)
959 vnic_intr_unmask(&fnic->intr[i]);
960
961 fnic_notify_timer_start(fnic);
962
963 return 0;
964
965 err_out_free_exch_mgr:
966 fc_exch_mgr_free(lp);
967 err_out_fc_exch_mgr_alloc:
968 fc_remove_host(lp->host);
969 scsi_remove_host(lp->host);
970 err_out_scsi_add_host:
971 fnic_free_intr(fnic);
972 err_out_request_intr:
973 for (i = 0; i < fnic->rq_count; i++)
974 vnic_rq_clean(&fnic->rq[i], fnic_free_rq_buf);
975 err_out_rq_buf:
976 vnic_dev_notify_unset(fnic->vdev);
977 err_out_free_max_pool:
978 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_MAX]);
979 err_out_free_dflt_pool:
980 mempool_destroy(fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT]);
981 err_out_free_ioreq_pool:
982 mempool_destroy(fnic->io_req_pool);
983 err_out_free_resources:
984 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++)
985 kfree(fnic->sw_copy_wq[hwq].io_req_table);
986 fnic_free_vnic_resources(fnic);
987 err_out_clear_intr:
988 fnic_clear_intr_mode(fnic);
989 err_out_dev_close:
990 vnic_dev_close(fnic->vdev);
991 err_out_dev_cmd_deinit:
992 err_out_vnic_unregister:
993 vnic_dev_unregister(fnic->vdev);
994 err_out_iounmap:
995 fnic_iounmap(fnic);
996 err_out_release_regions:
997 pci_release_regions(pdev);
998 err_out_disable_device:
999 pci_disable_device(pdev);
1000 err_out_free_hba:
1001 fnic_stats_debugfs_remove(fnic);
1002 ida_free(&fnic_ida, fnic->fnic_num);
1003 err_out_ida_alloc:
1004 scsi_host_put(lp->host);
1005 err_out:
1006 return err;
1007 }
1008
fnic_remove(struct pci_dev * pdev)1009 static void fnic_remove(struct pci_dev *pdev)
1010 {
1011 struct fnic *fnic = pci_get_drvdata(pdev);
1012 struct fc_lport *lp = fnic->lport;
1013 unsigned long flags;
1014 int hwq;
1015
1016 /*
1017 * Mark state so that the workqueue thread stops forwarding
1018 * received frames and link events to the local port. ISR and
1019 * other threads that can queue work items will also stop
1020 * creating work items on the fnic workqueue
1021 */
1022 spin_lock_irqsave(&fnic->fnic_lock, flags);
1023 fnic->stop_rx_link_events = 1;
1024 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
1025
1026 if (vnic_dev_get_intr_mode(fnic->vdev) == VNIC_DEV_INTR_MODE_MSI)
1027 del_timer_sync(&fnic->notify_timer);
1028
1029 /*
1030 * Flush the fnic event queue. After this call, there should
1031 * be no event queued for this fnic device in the workqueue
1032 */
1033 flush_workqueue(fnic_event_queue);
1034 skb_queue_purge(&fnic->frame_queue);
1035 skb_queue_purge(&fnic->tx_queue);
1036
1037 if (fnic->config.flags & VFCF_FIP_CAPABLE) {
1038 del_timer_sync(&fnic->fip_timer);
1039 skb_queue_purge(&fnic->fip_frame_queue);
1040 fnic_fcoe_reset_vlans(fnic);
1041 fnic_fcoe_evlist_free(fnic);
1042 }
1043
1044 /*
1045 * Log off the fabric. This stops all remote ports, dns port,
1046 * logs off the fabric. This flushes all rport, disc, lport work
1047 * before returning
1048 */
1049 fc_fabric_logoff(fnic->lport);
1050
1051 spin_lock_irqsave(&fnic->fnic_lock, flags);
1052 fnic->in_remove = 1;
1053 spin_unlock_irqrestore(&fnic->fnic_lock, flags);
1054
1055 fcoe_ctlr_destroy(&fnic->ctlr);
1056 fc_lport_destroy(lp);
1057 fnic_stats_debugfs_remove(fnic);
1058
1059 /*
1060 * This stops the fnic device, masks all interrupts. Completed
1061 * CQ entries are drained. Posted WQ/RQ/Copy-WQ entries are
1062 * cleaned up
1063 */
1064 fnic_cleanup(fnic);
1065
1066 BUG_ON(!skb_queue_empty(&fnic->frame_queue));
1067 BUG_ON(!skb_queue_empty(&fnic->tx_queue));
1068
1069 spin_lock_irqsave(&fnic_list_lock, flags);
1070 list_del(&fnic->list);
1071 spin_unlock_irqrestore(&fnic_list_lock, flags);
1072
1073 fc_remove_host(fnic->lport->host);
1074 scsi_remove_host(fnic->lport->host);
1075 for (hwq = 0; hwq < fnic->wq_copy_count; hwq++)
1076 kfree(fnic->sw_copy_wq[hwq].io_req_table);
1077 fc_exch_mgr_free(fnic->lport);
1078 vnic_dev_notify_unset(fnic->vdev);
1079 fnic_free_intr(fnic);
1080 fnic_free_vnic_resources(fnic);
1081 fnic_clear_intr_mode(fnic);
1082 vnic_dev_close(fnic->vdev);
1083 vnic_dev_unregister(fnic->vdev);
1084 fnic_iounmap(fnic);
1085 pci_release_regions(pdev);
1086 pci_disable_device(pdev);
1087 ida_free(&fnic_ida, fnic->fnic_num);
1088 scsi_host_put(lp->host);
1089 }
1090
1091 static struct pci_driver fnic_driver = {
1092 .name = DRV_NAME,
1093 .id_table = fnic_id_table,
1094 .probe = fnic_probe,
1095 .remove = fnic_remove,
1096 };
1097
fnic_init_module(void)1098 static int __init fnic_init_module(void)
1099 {
1100 size_t len;
1101 int err = 0;
1102
1103 printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
1104
1105 /* Create debugfs entries for fnic */
1106 err = fnic_debugfs_init();
1107 if (err < 0) {
1108 printk(KERN_ERR PFX "Failed to create fnic directory "
1109 "for tracing and stats logging\n");
1110 fnic_debugfs_terminate();
1111 }
1112
1113 /* Allocate memory for trace buffer */
1114 err = fnic_trace_buf_init();
1115 if (err < 0) {
1116 printk(KERN_ERR PFX
1117 "Trace buffer initialization Failed. "
1118 "Fnic Tracing utility is disabled\n");
1119 fnic_trace_free();
1120 }
1121
1122 /* Allocate memory for fc trace buffer */
1123 err = fnic_fc_trace_init();
1124 if (err < 0) {
1125 printk(KERN_ERR PFX "FC trace buffer initialization Failed "
1126 "FC frame tracing utility is disabled\n");
1127 fnic_fc_trace_free();
1128 }
1129
1130 /* Create a cache for allocation of default size sgls */
1131 len = sizeof(struct fnic_dflt_sgl_list);
1132 fnic_sgl_cache[FNIC_SGL_CACHE_DFLT] = kmem_cache_create
1133 ("fnic_sgl_dflt", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1134 SLAB_HWCACHE_ALIGN,
1135 NULL);
1136 if (!fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]) {
1137 printk(KERN_ERR PFX "failed to create fnic dflt sgl slab\n");
1138 err = -ENOMEM;
1139 goto err_create_fnic_sgl_slab_dflt;
1140 }
1141
1142 /* Create a cache for allocation of max size sgls*/
1143 len = sizeof(struct fnic_sgl_list);
1144 fnic_sgl_cache[FNIC_SGL_CACHE_MAX] = kmem_cache_create
1145 ("fnic_sgl_max", len + FNIC_SG_DESC_ALIGN, FNIC_SG_DESC_ALIGN,
1146 SLAB_HWCACHE_ALIGN,
1147 NULL);
1148 if (!fnic_sgl_cache[FNIC_SGL_CACHE_MAX]) {
1149 printk(KERN_ERR PFX "failed to create fnic max sgl slab\n");
1150 err = -ENOMEM;
1151 goto err_create_fnic_sgl_slab_max;
1152 }
1153
1154 /* Create a cache of io_req structs for use via mempool */
1155 fnic_io_req_cache = kmem_cache_create("fnic_io_req",
1156 sizeof(struct fnic_io_req),
1157 0, SLAB_HWCACHE_ALIGN, NULL);
1158 if (!fnic_io_req_cache) {
1159 printk(KERN_ERR PFX "failed to create fnic io_req slab\n");
1160 err = -ENOMEM;
1161 goto err_create_fnic_ioreq_slab;
1162 }
1163
1164 fnic_event_queue =
1165 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_event_wq");
1166 if (!fnic_event_queue) {
1167 printk(KERN_ERR PFX "fnic work queue create failed\n");
1168 err = -ENOMEM;
1169 goto err_create_fnic_workq;
1170 }
1171
1172 fnic_fip_queue =
1173 alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM, "fnic_fip_q");
1174 if (!fnic_fip_queue) {
1175 printk(KERN_ERR PFX "fnic FIP work queue create failed\n");
1176 err = -ENOMEM;
1177 goto err_create_fip_workq;
1178 }
1179
1180 fnic_fc_transport = fc_attach_transport(&fnic_fc_functions);
1181 if (!fnic_fc_transport) {
1182 printk(KERN_ERR PFX "fc_attach_transport error\n");
1183 err = -ENOMEM;
1184 goto err_fc_transport;
1185 }
1186
1187 /* register the driver with PCI system */
1188 err = pci_register_driver(&fnic_driver);
1189 if (err < 0) {
1190 printk(KERN_ERR PFX "pci register error\n");
1191 goto err_pci_register;
1192 }
1193 return err;
1194
1195 err_pci_register:
1196 fc_release_transport(fnic_fc_transport);
1197 err_fc_transport:
1198 destroy_workqueue(fnic_fip_queue);
1199 err_create_fip_workq:
1200 destroy_workqueue(fnic_event_queue);
1201 err_create_fnic_workq:
1202 kmem_cache_destroy(fnic_io_req_cache);
1203 err_create_fnic_ioreq_slab:
1204 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1205 err_create_fnic_sgl_slab_max:
1206 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1207 err_create_fnic_sgl_slab_dflt:
1208 fnic_trace_free();
1209 fnic_fc_trace_free();
1210 fnic_debugfs_terminate();
1211 return err;
1212 }
1213
fnic_cleanup_module(void)1214 static void __exit fnic_cleanup_module(void)
1215 {
1216 pci_unregister_driver(&fnic_driver);
1217 destroy_workqueue(fnic_event_queue);
1218 if (fnic_fip_queue)
1219 destroy_workqueue(fnic_fip_queue);
1220 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_MAX]);
1221 kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
1222 kmem_cache_destroy(fnic_io_req_cache);
1223 fc_release_transport(fnic_fc_transport);
1224 fnic_trace_free();
1225 fnic_fc_trace_free();
1226 fnic_debugfs_terminate();
1227 ida_destroy(&fnic_ida);
1228 }
1229
1230 module_init(fnic_init_module);
1231 module_exit(fnic_cleanup_module);
1232