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5df6d737 AJ |
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> | |
5a0e3ad6 | 21 | #include <linux/slab.h> |
5df6d737 AJ |
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> | |
78112e55 JE |
29 | #include <linux/if_ether.h> |
30 | #include <scsi/fc/fc_fip.h> | |
5df6d737 AJ |
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" | |
d3c995f1 | 42 | #include "fnic_fip.h" |
5df6d737 AJ |
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 | ||
4d7007b4 HP |
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"); | |
5df6d737 | 76 | |
abb14148 HS |
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 | ||
fc85799e HP |
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 | ||
5df6d737 AJ |
86 | static struct libfc_function_template fnic_transport_template = { |
87 | .frame_send = fnic_send, | |
78112e55 | 88 | .lport_set_port_id = fnic_set_port_id, |
5df6d737 AJ |
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)); | |
5df6d737 | 97 | |
5df6d737 AJ |
98 | if (!rport || fc_remote_port_chkready(rport)) |
99 | return -ENXIO; | |
100 | ||
db5ed4df | 101 | scsi_change_queue_depth(sdev, fnic_max_qdepth); |
5df6d737 AJ |
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, | |
db5ed4df | 113 | .change_queue_depth = scsi_change_queue_depth, |
5df6d737 AJ |
114 | .this_id = -1, |
115 | .cmd_per_lun = 3, | |
c8ff03c6 | 116 | .can_queue = FNIC_DFLT_IO_REQ, |
5df6d737 AJ |
117 | .use_clustering = ENABLE_CLUSTERING, |
118 | .sg_tablesize = FNIC_MAX_SG_DESC_CNT, | |
119 | .max_sectors = 0xffff, | |
120 | .shost_attrs = fnic_attrs, | |
2ecb204d | 121 | .use_blk_tags = 1, |
c40ecc12 | 122 | .track_queue_depth = 1, |
5df6d737 AJ |
123 | }; |
124 | ||
8196a934 | 125 | static void |
48586820 | 126 | fnic_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout) |
8196a934 | 127 | { |
48586820 MC |
128 | if (timeout) |
129 | rport->dev_loss_tmo = timeout; | |
130 | else | |
131 | rport->dev_loss_tmo = 1; | |
8196a934 MC |
132 | } |
133 | ||
5df6d737 AJ |
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 *); | |
1adee040 | 137 | static void fnic_reset_host_stats(struct Scsi_Host *); |
5df6d737 AJ |
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, | |
48586820 | 162 | .set_rport_dev_loss_tmo = fnic_set_rport_dev_loss_tmo, |
5df6d737 AJ |
163 | .issue_fc_host_lip = fnic_reset, |
164 | .get_fc_host_stats = fnic_get_stats, | |
1adee040 | 165 | .reset_fc_host_stats = fnic_reset_host_stats, |
5df6d737 AJ |
166 | .dd_fcrport_size = sizeof(struct fc_rport_libfc_priv), |
167 | .terminate_rport_io = fnic_terminate_rport_io, | |
76d8737c | 168 | .bsg_request = fc_lport_bsg_request, |
5df6d737 AJ |
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; | |
1adee040 NM |
219 | stats->seconds_since_last_reset = |
220 | (jiffies - fnic->stats_reset_time) / HZ; | |
5df6d737 AJ |
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 | ||
1adee040 NM |
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 | ||
5df6d737 AJ |
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 | ||
d3c995f1 HP |
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 | ||
5df6d737 AJ |
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; | |
a232bfbe HS |
440 | int count; |
441 | ||
442 | count = 0; | |
5df6d737 AJ |
443 | |
444 | err = start(vdev, arg); | |
445 | if (err) | |
446 | return err; | |
447 | ||
a232bfbe HS |
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 | */ | |
5df6d737 AJ |
454 | time = jiffies + (HZ * 2); |
455 | do { | |
456 | err = finished(vdev, &done); | |
a232bfbe | 457 | count++; |
5df6d737 AJ |
458 | if (err) |
459 | return err; | |
460 | if (done) | |
461 | return 0; | |
462 | schedule_timeout_uninterruptible(HZ / 10); | |
a232bfbe | 463 | } while (time_after(time, jiffies) || (count < 3)); |
5df6d737 AJ |
464 | |
465 | return -ETIMEDOUT; | |
466 | } | |
467 | ||
468 | static int fnic_cleanup(struct fnic *fnic) | |
469 | { | |
470 | unsigned int i; | |
471 | int err; | |
5df6d737 AJ |
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 | ||
5df6d737 AJ |
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 | ||
78112e55 JE |
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 | ||
d3c995f1 HP |
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 | ||
6f039790 | 542 | static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
5df6d737 AJ |
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 | */ | |
86221969 CL |
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"); | |
5df6d737 AJ |
559 | err = -ENOMEM; |
560 | goto err_out; | |
561 | } | |
86221969 | 562 | host = lp->host; |
5df6d737 AJ |
563 | fnic = lport_priv(lp); |
564 | fnic->lport = lp; | |
78112e55 | 565 | fnic->ctlr.lp = lp; |
5df6d737 AJ |
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 | ||
67125b02 HP |
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 | ||
5df6d737 AJ |
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 | |
87aa619c | 601 | * limitation for the device. Try 64-bit first, and |
5df6d737 AJ |
602 | * fail to 32-bit. |
603 | */ | |
87aa619c | 604 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); |
5df6d737 | 605 | if (err) { |
e3f47cc7 | 606 | err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); |
5df6d737 AJ |
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 | } | |
e3f47cc7 | 613 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); |
5df6d737 AJ |
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 { | |
87aa619c | 621 | err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); |
5df6d737 AJ |
622 | if (err) { |
623 | shost_printk(KERN_ERR, fnic->lport->host, | |
87aa619c | 624 | "Unable to obtain 64-bit DMA " |
5df6d737 AJ |
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 | ||
78112e55 | 674 | err = vnic_dev_mac_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
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 | } | |
78112e55 JE |
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); | |
5df6d737 AJ |
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 | } | |
fc85799e HP |
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 | ||
5df6d737 AJ |
707 | host->max_lun = fnic->config.luns_per_tgt; |
708 | host->max_id = FNIC_MAX_FCP_TARGET; | |
da87bfab | 709 | host->max_cmd_len = FCOE_MAX_CMD_LEN; |
5df6d737 AJ |
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 | ||
5df6d737 AJ |
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"); | |
2e76f767 | 726 | goto err_out_clear_intr; |
5df6d737 AJ |
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 | ||
0c79c742 | 750 | pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]); |
5df6d737 AJ |
751 | if (!pool) |
752 | goto err_out_free_ioreq_pool; | |
753 | fnic->io_sgl_pool[FNIC_SGL_CACHE_DFLT] = pool; | |
754 | ||
0c79c742 | 755 | pool = mempool_create_slab_pool(2, fnic_sgl_cache[FNIC_SGL_CACHE_MAX]); |
5df6d737 AJ |
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 | ||
78112e55 JE |
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; | |
78112e55 JE |
768 | if (fnic->config.flags & VFCF_FIP_CAPABLE) { |
769 | shost_printk(KERN_INFO, fnic->lport->host, | |
770 | "firmware supports FIP\n"); | |
aaa5e569 VSVB |
771 | /* enable directed and multicast */ |
772 | vnic_dev_packet_filter(fnic->vdev, 1, 1, 0, 0, 0); | |
78112e55 JE |
773 | vnic_dev_add_addr(fnic->vdev, FIP_ALL_ENODE_MACS); |
774 | vnic_dev_add_addr(fnic->vdev, fnic->ctlr.ctl_src_addr); | |
d3c995f1 | 775 | fnic->set_vlan = fnic_set_vlan; |
3d902ac0 | 776 | fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_AUTO); |
d3c995f1 HP |
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); | |
d3c995f1 HP |
783 | INIT_LIST_HEAD(&fnic->evlist); |
784 | INIT_LIST_HEAD(&fnic->vlans); | |
78112e55 JE |
785 | } else { |
786 | shost_printk(KERN_INFO, fnic->lport->host, | |
787 | "firmware uses non-FIP mode\n"); | |
3d902ac0 | 788 | fcoe_ctlr_init(&fnic->ctlr, FIP_MODE_NON_FIP); |
c8ff03c6 | 789 | fnic->ctlr.state = FIP_ST_NON_FIP; |
78112e55 | 790 | } |
5df6d737 AJ |
791 | fnic->state = FNIC_IN_FC_MODE; |
792 | ||
03298552 HP |
793 | atomic_set(&fnic->in_flight, 0); |
794 | fnic->state_flags = FNIC_FLAGS_NONE; | |
795 | ||
5df6d737 AJ |
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; | |
5df6d737 | 837 | |
5df6d737 | 838 | lp->max_retry_count = fnic->config.flogi_retries; |
a3666955 | 839 | lp->max_rport_retry_count = fnic->config.plogi_retries; |
5df6d737 AJ |
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 | ||
e10f8c66 | 852 | fcoe_libfc_config(lp, &fnic->ctlr, &fnic_transport_template, 0); |
5df6d737 | 853 | |
52ff878c VD |
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 | ||
c693a71d | 860 | fc_lport_init_stats(lp); |
1adee040 | 861 | fnic->stats_reset_time = jiffies; |
c693a71d | 862 | |
5df6d737 AJ |
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; | |
48586820 | 871 | fc_host_dev_loss_tmo(lp->host) = fnic->config.port_down_timeout / 1000; |
5df6d737 AJ |
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); | |
78112e55 | 883 | skb_queue_head_init(&fnic->tx_queue); |
5df6d737 AJ |
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); | |
2e76f767 AJ |
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 | ||
5df6d737 AJ |
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: | |
52ff878c | 912 | fc_exch_mgr_free(lp); |
5df6d737 | 913 | err_out_remove_scsi_host: |
78112e55 JE |
914 | fc_remove_host(lp->host); |
915 | scsi_remove_host(lp->host); | |
5df6d737 AJ |
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); | |
5df6d737 AJ |
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: | |
67125b02 | 941 | fnic_stats_debugfs_remove(fnic); |
5df6d737 AJ |
942 | scsi_host_put(lp->host); |
943 | err_out: | |
944 | return err; | |
945 | } | |
946 | ||
6f039790 | 947 | static void fnic_remove(struct pci_dev *pdev) |
5df6d737 AJ |
948 | { |
949 | struct fnic *fnic = pci_get_drvdata(pdev); | |
78112e55 | 950 | struct fc_lport *lp = fnic->lport; |
5df6d737 AJ |
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); | |
78112e55 | 972 | skb_queue_purge(&fnic->tx_queue); |
5df6d737 | 973 | |
d3c995f1 HP |
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 | ||
5df6d737 AJ |
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 | ||
78112e55 JE |
992 | fcoe_ctlr_destroy(&fnic->ctlr); |
993 | fc_lport_destroy(lp); | |
67125b02 | 994 | fnic_stats_debugfs_remove(fnic); |
5df6d737 AJ |
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)); | |
78112e55 | 1004 | BUG_ON(!skb_queue_empty(&fnic->tx_queue)); |
5df6d737 AJ |
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); | |
52ff878c | 1012 | fc_exch_mgr_free(fnic->lport); |
5df6d737 | 1013 | vnic_dev_notify_unset(fnic->vdev); |
5df6d737 | 1014 | fnic_free_intr(fnic); |
2e76f767 | 1015 | fnic_free_vnic_resources(fnic); |
5df6d737 AJ |
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); | |
78112e55 | 1022 | scsi_host_put(lp->host); |
5df6d737 AJ |
1023 | } |
1024 | ||
1025 | static struct pci_driver fnic_driver = { | |
1026 | .name = DRV_NAME, | |
1027 | .id_table = fnic_id_table, | |
1028 | .probe = fnic_probe, | |
6f039790 | 1029 | .remove = fnic_remove, |
5df6d737 AJ |
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 | ||
67125b02 HP |
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 | ||
4d7007b4 HP |
1047 | /* Allocate memory for trace buffer */ |
1048 | err = fnic_trace_buf_init(); | |
1049 | if (err < 0) { | |
abb14148 HS |
1050 | printk(KERN_ERR PFX |
1051 | "Trace buffer initialization Failed. " | |
1052 | "Fnic Tracing utility is disabled\n"); | |
4d7007b4 HP |
1053 | fnic_trace_free(); |
1054 | } | |
1055 | ||
abb14148 HS |
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 | ||
5df6d737 AJ |
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, | |
0c79c742 | 1068 | SLAB_HWCACHE_ALIGN, |
5df6d737 AJ |
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, | |
d3c995f1 HP |
1080 | SLAB_HWCACHE_ALIGN, |
1081 | NULL); | |
5df6d737 AJ |
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 | ||
e09056b2 CL |
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 | ||
5df6d737 AJ |
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: | |
e09056b2 CL |
1133 | destroy_workqueue(fnic_fip_queue); |
1134 | err_create_fip_workq: | |
5df6d737 AJ |
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: | |
4d7007b4 | 1143 | fnic_trace_free(); |
abb14148 | 1144 | fnic_fc_trace_free(); |
67125b02 | 1145 | fnic_debugfs_terminate(); |
5df6d737 AJ |
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); | |
d3c995f1 HP |
1153 | if (fnic_fip_queue) { |
1154 | flush_workqueue(fnic_fip_queue); | |
1155 | destroy_workqueue(fnic_fip_queue); | |
1156 | } | |
5df6d737 AJ |
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); | |
4d7007b4 | 1161 | fnic_trace_free(); |
abb14148 | 1162 | fnic_fc_trace_free(); |
67125b02 | 1163 | fnic_debugfs_terminate(); |
5df6d737 AJ |
1164 | } |
1165 | ||
1166 | module_init(fnic_init_module); | |
1167 | module_exit(fnic_cleanup_module); | |
1168 |