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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / scsi / qedf / qedf_main.c
blob46d185cb9ea8071c3ed7aff3d943057012350c9e
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * QLogic FCoE Offload Driver
4 * Copyright (c) 2016-2018 Cavium Inc.
5 */
6 #include <linux/init.h>
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/pci.h>
10 #include <linux/device.h>
11 #include <linux/highmem.h>
12 #include <linux/crc32.h>
13 #include <linux/interrupt.h>
14 #include <linux/list.h>
15 #include <linux/kthread.h>
16 #include <linux/phylink.h>
17 #include <scsi/libfc.h>
18 #include <scsi/scsi_host.h>
19 #include <scsi/fc_frame.h>
20 #include <linux/if_ether.h>
21 #include <linux/if_vlan.h>
22 #include <linux/cpu.h>
23 #include "qedf.h"
24 #include "qedf_dbg.h"
25 #include <uapi/linux/pci_regs.h>
26
27 const struct qed_fcoe_ops *qed_ops;
28
29 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
30 static void qedf_remove(struct pci_dev *pdev);
31 static void qedf_shutdown(struct pci_dev *pdev);
32 static void qedf_schedule_recovery_handler(void *dev);
33 static void qedf_recovery_handler(struct work_struct *work);
34
35 /*
36 * Driver module parameters.
37 */
38 static unsigned int qedf_dev_loss_tmo = 60;
39 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
40 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
41 "remote ports (default 60)");
42
43 uint qedf_debug = QEDF_LOG_INFO;
44 module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR);
45 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
46 " mask");
47
48 static uint qedf_fipvlan_retries = 60;
49 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
50 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
51 "before giving up (default 60)");
52
53 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
54 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
55 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
56 "(default 1002).");
57
58 static int qedf_default_prio = -1;
59 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
60 MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE"
61 " traffic (value between 0 and 7, default 3).");
62
63 uint qedf_dump_frames;
64 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
65 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
66 "(default off)");
67
68 static uint qedf_queue_depth;
69 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
70 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
71 "by the qedf driver. Default is 0 (use OS default).");
72
73 uint qedf_io_tracing;
74 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
75 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
76 "into trace buffer. (default off).");
77
78 static uint qedf_max_lun = MAX_FIBRE_LUNS;
79 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
80 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
81 "supports. (default 0xffffffff)");
82
83 uint qedf_link_down_tmo;
84 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
85 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
86 "link is down by N seconds.");
87
88 bool qedf_retry_delay;
89 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
90 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
91 "delay handling (default off).");
92
93 static bool qedf_dcbx_no_wait;
94 module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
95 MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
96 "sending FIP VLAN requests on link up (Default: off).");
97
98 static uint qedf_dp_module;
99 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
100 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
101 "qed module during probe.");
102
103 static uint qedf_dp_level = QED_LEVEL_NOTICE;
104 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
105 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
106 "during probe (0-3: 0 more verbose).");
107
108 static bool qedf_enable_recovery = true;
109 module_param_named(enable_recovery, qedf_enable_recovery,
110 bool, S_IRUGO | S_IWUSR);
111 MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware "
112 "interface level errors 0 = Disabled, 1 = Enabled (Default: 1).");
113
114 struct workqueue_struct *qedf_io_wq;
115
116 static struct fcoe_percpu_s qedf_global;
117 static DEFINE_SPINLOCK(qedf_global_lock);
118
119 static struct kmem_cache *qedf_io_work_cache;
120
121 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
122 {
123 int vlan_id_tmp = 0;
124
125 vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT);
126 qedf->vlan_id = vlan_id_tmp;
127 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
128 "Setting vlan_id=0x%04x prio=%d.\n",
129 vlan_id_tmp, qedf->prio);
130 }
131
132 /* Returns true if we have a valid vlan, false otherwise */
133 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
134 {
135
136 while (qedf->fipvlan_retries--) {
137 /* This is to catch if link goes down during fipvlan retries */
138 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
139 QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n");
140 return false;
141 }
142
143 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
144 QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n");
145 return false;
146 }
147
148 if (qedf->vlan_id > 0) {
149 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
150 "vlan = 0x%x already set, calling ctlr_link_up.\n",
151 qedf->vlan_id);
152 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
153 fcoe_ctlr_link_up(&qedf->ctlr);
154 return true;
155 }
156
157 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
158 "Retry %d.\n", qedf->fipvlan_retries);
159 init_completion(&qedf->fipvlan_compl);
160 qedf_fcoe_send_vlan_req(qedf);
161 wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ);
162 }
163
164 return false;
165 }
166
167 static void qedf_handle_link_update(struct work_struct *work)
168 {
169 struct qedf_ctx *qedf =
170 container_of(work, struct qedf_ctx, link_update.work);
171 int rc;
172
173 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n",
174 atomic_read(&qedf->link_state));
175
176 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
177 rc = qedf_initiate_fipvlan_req(qedf);
178 if (rc)
179 return;
180
181 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
182 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
183 "Link is down, resetting vlan_id.\n");
184 qedf->vlan_id = 0;
185 return;
186 }
187
188 /*
189 * If we get here then we never received a repsonse to our
190 * fip vlan request so set the vlan_id to the default and
191 * tell FCoE that the link is up
192 */
193 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
194 "response, falling back to default VLAN %d.\n",
195 qedf_fallback_vlan);
196 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
197
198 /*
199 * Zero out data_src_addr so we'll update it with the new
200 * lport port_id
201 */
202 eth_zero_addr(qedf->data_src_addr);
203 fcoe_ctlr_link_up(&qedf->ctlr);
204 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
205 /*
206 * If we hit here and link_down_tmo_valid is still 1 it means
207 * that link_down_tmo timed out so set it to 0 to make sure any
208 * other readers have accurate state.
209 */
210 atomic_set(&qedf->link_down_tmo_valid, 0);
211 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
212 "Calling fcoe_ctlr_link_down().\n");
213 fcoe_ctlr_link_down(&qedf->ctlr);
214 if (qedf_wait_for_upload(qedf) == false)
215 QEDF_ERR(&qedf->dbg_ctx,
216 "Could not upload all sessions.\n");
217 /* Reset the number of FIP VLAN retries */
218 qedf->fipvlan_retries = qedf_fipvlan_retries;
219 }
220 }
221
222 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
223 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
224 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
225 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
226 {
227 u8 *granted_mac;
228 struct fc_frame_header *fh = fc_frame_header_get(fp);
229 u8 fc_map[3];
230 int method = 0;
231
232 /* Get granted MAC address from FIP FLOGI payload */
233 granted_mac = fr_cb(fp)->granted_mac;
234
235 /*
236 * We set the source MAC for FCoE traffic based on the Granted MAC
237 * address from the switch.
238 *
239 * If granted_mac is non-zero, we used that.
240 * If the granted_mac is zeroed out, created the FCoE MAC based on
241 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
242 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
243 * d_id of the FLOGI frame.
244 */
245 if (!is_zero_ether_addr(granted_mac)) {
246 ether_addr_copy(qedf->data_src_addr, granted_mac);
247 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
248 } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
249 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
250 qedf->data_src_addr[0] = fc_map[0];
251 qedf->data_src_addr[1] = fc_map[1];
252 qedf->data_src_addr[2] = fc_map[2];
253 qedf->data_src_addr[3] = fh->fh_d_id[0];
254 qedf->data_src_addr[4] = fh->fh_d_id[1];
255 qedf->data_src_addr[5] = fh->fh_d_id[2];
256 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
257 } else {
258 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
259 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
260 }
261
262 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
263 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
264 }
265
266 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
267 void *arg)
268 {
269 struct fc_exch *exch = fc_seq_exch(seq);
270 struct fc_lport *lport = exch->lp;
271 struct qedf_ctx *qedf = lport_priv(lport);
272
273 if (!qedf) {
274 QEDF_ERR(NULL, "qedf is NULL.\n");
275 return;
276 }
277
278 /*
279 * If ERR_PTR is set then don't try to stat anything as it will cause
280 * a crash when we access fp.
281 */
282 if (IS_ERR(fp)) {
283 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
284 "fp has IS_ERR() set.\n");
285 goto skip_stat;
286 }
287
288 /* Log stats for FLOGI reject */
289 if (fc_frame_payload_op(fp) == ELS_LS_RJT)
290 qedf->flogi_failed++;
291 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
292 /* Set the source MAC we will use for FCoE traffic */
293 qedf_set_data_src_addr(qedf, fp);
294 qedf->flogi_pending = 0;
295 }
296
297 /* Complete flogi_compl so we can proceed to sending ADISCs */
298 complete(&qedf->flogi_compl);
299
300 skip_stat:
301 /* Report response to libfc */
302 fc_lport_flogi_resp(seq, fp, lport);
303 }
304
305 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
306 struct fc_frame *fp, unsigned int op,
307 void (*resp)(struct fc_seq *,
308 struct fc_frame *,
309 void *),
310 void *arg, u32 timeout)
311 {
312 struct qedf_ctx *qedf = lport_priv(lport);
313
314 /*
315 * Intercept FLOGI for statistic purposes. Note we use the resp
316 * callback to tell if this is really a flogi.
317 */
318 if (resp == fc_lport_flogi_resp) {
319 qedf->flogi_cnt++;
320 if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) {
321 schedule_delayed_work(&qedf->stag_work, 2);
322 return NULL;
323 }
324 qedf->flogi_pending++;
325 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
326 arg, timeout);
327 }
328
329 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
330 }
331
332 int qedf_send_flogi(struct qedf_ctx *qedf)
333 {
334 struct fc_lport *lport;
335 struct fc_frame *fp;
336
337 lport = qedf->lport;
338
339 if (!lport->tt.elsct_send) {
340 QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n");
341 return -EINVAL;
342 }
343
344 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
345 if (!fp) {
346 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
347 return -ENOMEM;
348 }
349
350 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
351 "Sending FLOGI to reestablish session with switch.\n");
352 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
353 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
354
355 init_completion(&qedf->flogi_compl);
356
357 return 0;
358 }
359
360 /*
361 * This function is called if link_down_tmo is in use. If we get a link up and
362 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
363 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
364 */
365 static void qedf_link_recovery(struct work_struct *work)
366 {
367 struct qedf_ctx *qedf =
368 container_of(work, struct qedf_ctx, link_recovery.work);
369 struct fc_lport *lport = qedf->lport;
370 struct fc_rport_priv *rdata;
371 bool rc;
372 int retries = 30;
373 int rval, i;
374 struct list_head rdata_login_list;
375
376 INIT_LIST_HEAD(&rdata_login_list);
377
378 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
379 "Link down tmo did not expire.\n");
380
381 /*
382 * Essentially reset the fcoe_ctlr here without affecting the state
383 * of the libfc structs.
384 */
385 qedf->ctlr.state = FIP_ST_LINK_WAIT;
386 fcoe_ctlr_link_down(&qedf->ctlr);
387
388 /*
389 * Bring the link up before we send the fipvlan request so libfcoe
390 * can select a new fcf in parallel
391 */
392 fcoe_ctlr_link_up(&qedf->ctlr);
393
394 /* Since the link when down and up to verify which vlan we're on */
395 qedf->fipvlan_retries = qedf_fipvlan_retries;
396 rc = qedf_initiate_fipvlan_req(qedf);
397 /* If getting the VLAN fails, set the VLAN to the fallback one */
398 if (!rc)
399 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
400
401 /*
402 * We need to wait for an FCF to be selected due to the
403 * fcoe_ctlr_link_up other the FLOGI will be rejected.
404 */
405 while (retries > 0) {
406 if (qedf->ctlr.sel_fcf) {
407 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
408 "FCF reselected, proceeding with FLOGI.\n");
409 break;
410 }
411 msleep(500);
412 retries--;
413 }
414
415 if (retries < 1) {
416 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
417 "FCF selection.\n");
418 return;
419 }
420
421 rval = qedf_send_flogi(qedf);
422 if (rval)
423 return;
424
425 /* Wait for FLOGI completion before proceeding with sending ADISCs */
426 i = wait_for_completion_timeout(&qedf->flogi_compl,
427 qedf->lport->r_a_tov);
428 if (i == 0) {
429 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
430 return;
431 }
432
433 /*
434 * Call lport->tt.rport_login which will cause libfc to send an
435 * ADISC since the rport is in state ready.
436 */
437 mutex_lock(&lport->disc.disc_mutex);
438 list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
439 if (kref_get_unless_zero(&rdata->kref)) {
440 fc_rport_login(rdata);
441 kref_put(&rdata->kref, fc_rport_destroy);
442 }
443 }
444 mutex_unlock(&lport->disc.disc_mutex);
445 }
446
447 static void qedf_update_link_speed(struct qedf_ctx *qedf,
448 struct qed_link_output *link)
449 {
450 __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps);
451 struct fc_lport *lport = qedf->lport;
452
453 lport->link_speed = FC_PORTSPEED_UNKNOWN;
454 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
455
456 /* Set fc_host link speed */
457 switch (link->speed) {
458 case 10000:
459 lport->link_speed = FC_PORTSPEED_10GBIT;
460 break;
461 case 25000:
462 lport->link_speed = FC_PORTSPEED_25GBIT;
463 break;
464 case 40000:
465 lport->link_speed = FC_PORTSPEED_40GBIT;
466 break;
467 case 50000:
468 lport->link_speed = FC_PORTSPEED_50GBIT;
469 break;
470 case 100000:
471 lport->link_speed = FC_PORTSPEED_100GBIT;
472 break;
473 case 20000:
474 lport->link_speed = FC_PORTSPEED_20GBIT;
475 break;
476 default:
477 lport->link_speed = FC_PORTSPEED_UNKNOWN;
478 break;
479 }
480
481 /*
482 * Set supported link speed by querying the supported
483 * capabilities of the link.
484 */
485
486 phylink_zero(sup_caps);
487 phylink_set(sup_caps, 10000baseT_Full);
488 phylink_set(sup_caps, 10000baseKX4_Full);
489 phylink_set(sup_caps, 10000baseR_FEC);
490 phylink_set(sup_caps, 10000baseCR_Full);
491 phylink_set(sup_caps, 10000baseSR_Full);
492 phylink_set(sup_caps, 10000baseLR_Full);
493 phylink_set(sup_caps, 10000baseLRM_Full);
494 phylink_set(sup_caps, 10000baseKR_Full);
495
496 if (linkmode_intersects(link->supported_caps, sup_caps))
497 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
498
499 phylink_zero(sup_caps);
500 phylink_set(sup_caps, 25000baseKR_Full);
501 phylink_set(sup_caps, 25000baseCR_Full);
502 phylink_set(sup_caps, 25000baseSR_Full);
503
504 if (linkmode_intersects(link->supported_caps, sup_caps))
505 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
506
507 phylink_zero(sup_caps);
508 phylink_set(sup_caps, 40000baseLR4_Full);
509 phylink_set(sup_caps, 40000baseKR4_Full);
510 phylink_set(sup_caps, 40000baseCR4_Full);
511 phylink_set(sup_caps, 40000baseSR4_Full);
512
513 if (linkmode_intersects(link->supported_caps, sup_caps))
514 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
515
516 phylink_zero(sup_caps);
517 phylink_set(sup_caps, 50000baseKR2_Full);
518 phylink_set(sup_caps, 50000baseCR2_Full);
519 phylink_set(sup_caps, 50000baseSR2_Full);
520
521 if (linkmode_intersects(link->supported_caps, sup_caps))
522 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
523
524 phylink_zero(sup_caps);
525 phylink_set(sup_caps, 100000baseKR4_Full);
526 phylink_set(sup_caps, 100000baseSR4_Full);
527 phylink_set(sup_caps, 100000baseCR4_Full);
528 phylink_set(sup_caps, 100000baseLR4_ER4_Full);
529
530 if (linkmode_intersects(link->supported_caps, sup_caps))
531 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
532
533 phylink_zero(sup_caps);
534 phylink_set(sup_caps, 20000baseKR2_Full);
535
536 if (linkmode_intersects(link->supported_caps, sup_caps))
537 lport->link_supported_speeds |= FC_PORTSPEED_20GBIT;
538
539 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
540 }
541
542 static void qedf_bw_update(void *dev)
543 {
544 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
545 struct qed_link_output link;
546
547 /* Get the latest status of the link */
548 qed_ops->common->get_link(qedf->cdev, &link);
549
550 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
551 QEDF_ERR(&qedf->dbg_ctx,
552 "Ignore link update, driver getting unload.\n");
553 return;
554 }
555
556 if (link.link_up) {
557 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP)
558 qedf_update_link_speed(qedf, &link);
559 else
560 QEDF_ERR(&qedf->dbg_ctx,
561 "Ignore bw update, link is down.\n");
562
563 } else {
564 QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n");
565 }
566 }
567
568 static void qedf_link_update(void *dev, struct qed_link_output *link)
569 {
570 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
571
572 /*
573 * Prevent race where we're removing the module and we get link update
574 * for qed.
575 */
576 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
577 QEDF_ERR(&qedf->dbg_ctx,
578 "Ignore link update, driver getting unload.\n");
579 return;
580 }
581
582 if (link->link_up) {
583 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
584 QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC,
585 "Ignoring link up event as link is already up.\n");
586 return;
587 }
588 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
589 link->speed / 1000);
590
591 /* Cancel any pending link down work */
592 cancel_delayed_work(&qedf->link_update);
593
594 atomic_set(&qedf->link_state, QEDF_LINK_UP);
595 qedf_update_link_speed(qedf, link);
596
597 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
598 qedf_dcbx_no_wait) {
599 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
600 "DCBx done.\n");
601 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
602 queue_delayed_work(qedf->link_update_wq,
603 &qedf->link_recovery, 0);
604 else
605 queue_delayed_work(qedf->link_update_wq,
606 &qedf->link_update, 0);
607 atomic_set(&qedf->link_down_tmo_valid, 0);
608 }
609
610 } else {
611 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
612
613 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
614 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
615 /*
616 * Flag that we're waiting for the link to come back up before
617 * informing the fcoe layer of the event.
618 */
619 if (qedf_link_down_tmo > 0) {
620 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
621 "Starting link down tmo.\n");
622 atomic_set(&qedf->link_down_tmo_valid, 1);
623 }
624 qedf->vlan_id = 0;
625 qedf_update_link_speed(qedf, link);
626 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
627 qedf_link_down_tmo * HZ);
628 }
629 }
630
631
632 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
633 {
634 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
635 u8 tmp_prio;
636
637 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
638 "prio=%d.\n", get->operational.valid, get->operational.enabled,
639 get->operational.app_prio.fcoe);
640
641 if (get->operational.enabled && get->operational.valid) {
642 /* If DCBX was already negotiated on link up then just exit */
643 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
644 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
645 "DCBX already set on link up.\n");
646 return;
647 }
648
649 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
650
651 /*
652 * Set the 8021q priority in the following manner:
653 *
654 * 1. If a modparam is set use that
655 * 2. If the value is not between 0..7 use the default
656 * 3. Use the priority we get from the DCBX app tag
657 */
658 tmp_prio = get->operational.app_prio.fcoe;
659 if (qedf_default_prio > -1)
660 qedf->prio = qedf_default_prio;
661 else if (tmp_prio > 7) {
662 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
663 "FIP/FCoE prio %d out of range, setting to %d.\n",
664 tmp_prio, QEDF_DEFAULT_PRIO);
665 qedf->prio = QEDF_DEFAULT_PRIO;
666 } else
667 qedf->prio = tmp_prio;
668
669 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
670 !qedf_dcbx_no_wait) {
671 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
672 queue_delayed_work(qedf->link_update_wq,
673 &qedf->link_recovery, 0);
674 else
675 queue_delayed_work(qedf->link_update_wq,
676 &qedf->link_update, 0);
677 atomic_set(&qedf->link_down_tmo_valid, 0);
678 }
679 }
680
681 }
682
683 static u32 qedf_get_login_failures(void *cookie)
684 {
685 struct qedf_ctx *qedf;
686
687 qedf = (struct qedf_ctx *)cookie;
688 return qedf->flogi_failed;
689 }
690
691 static struct qed_fcoe_cb_ops qedf_cb_ops = {
692 {
693 .link_update = qedf_link_update,
694 .bw_update = qedf_bw_update,
695 .schedule_recovery_handler = qedf_schedule_recovery_handler,
696 .dcbx_aen = qedf_dcbx_handler,
697 .get_generic_tlv_data = qedf_get_generic_tlv_data,
698 .get_protocol_tlv_data = qedf_get_protocol_tlv_data,
699 .schedule_hw_err_handler = qedf_schedule_hw_err_handler,
700 }
701 };
702
703 /*
704 * Various transport templates.
705 */
706
707 static struct scsi_transport_template *qedf_fc_transport_template;
708 static struct scsi_transport_template *qedf_fc_vport_transport_template;
709
710 /*
711 * SCSI EH handlers
712 */
713 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
714 {
715 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
716 struct fc_lport *lport;
717 struct qedf_ctx *qedf;
718 struct qedf_ioreq *io_req;
719 struct fc_rport_libfc_priv *rp = rport->dd_data;
720 struct fc_rport_priv *rdata;
721 struct qedf_rport *fcport = NULL;
722 int rc = FAILED;
723 int wait_count = 100;
724 int refcount = 0;
725 int rval;
726 int got_ref = 0;
727
728 lport = shost_priv(sc_cmd->device->host);
729 qedf = (struct qedf_ctx *)lport_priv(lport);
730
731 /* rport and tgt are allocated together, so tgt should be non-NULL */
732 fcport = (struct qedf_rport *)&rp[1];
733 rdata = fcport->rdata;
734 if (!rdata || !kref_get_unless_zero(&rdata->kref)) {
735 QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n", sc_cmd);
736 rc = SUCCESS;
737 goto out;
738 }
739
740
741 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
742 if (!io_req) {
743 QEDF_ERR(&qedf->dbg_ctx,
744 "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n",
745 sc_cmd, sc_cmd->cmnd[0],
746 rdata->ids.port_id);
747 rc = SUCCESS;
748 goto drop_rdata_kref;
749 }
750
751 rval = kref_get_unless_zero(&io_req->refcount); /* ID: 005 */
752 if (rval)
753 got_ref = 1;
754
755 /* If we got a valid io_req, confirm it belongs to this sc_cmd. */
756 if (!rval || io_req->sc_cmd != sc_cmd) {
757 QEDF_ERR(&qedf->dbg_ctx,
758 "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n",
759 io_req->sc_cmd, sc_cmd, rdata->ids.port_id);
760
761 goto drop_rdata_kref;
762 }
763
764 if (fc_remote_port_chkready(rport)) {
765 refcount = kref_read(&io_req->refcount);
766 QEDF_ERR(&qedf->dbg_ctx,
767 "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n",
768 io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0],
769 refcount, rdata->ids.port_id);
770
771 goto drop_rdata_kref;
772 }
773
774 rc = fc_block_scsi_eh(sc_cmd);
775 if (rc)
776 goto drop_rdata_kref;
777
778 if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) {
779 QEDF_ERR(&qedf->dbg_ctx,
780 "Connection uploading, xid=0x%x., port_id=%06x\n",
781 io_req->xid, rdata->ids.port_id);
782 while (io_req->sc_cmd && (wait_count != 0)) {
783 msleep(100);
784 wait_count--;
785 }
786 if (wait_count) {
787 QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n");
788 rc = SUCCESS;
789 } else {
790 QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n");
791 rc = FAILED;
792 }
793 goto drop_rdata_kref;
794 }
795
796 if (lport->state != LPORT_ST_READY || !(lport->link_up)) {
797 QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n");
798 goto drop_rdata_kref;
799 }
800
801 QEDF_ERR(&qedf->dbg_ctx,
802 "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n",
803 io_req, sc_cmd, io_req->xid, io_req->fp_idx,
804 rdata->ids.port_id);
805
806 if (qedf->stop_io_on_error) {
807 qedf_stop_all_io(qedf);
808 rc = SUCCESS;
809 goto drop_rdata_kref;
810 }
811
812 init_completion(&io_req->abts_done);
813 rval = qedf_initiate_abts(io_req, true);
814 if (rval) {
815 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
816 /*
817 * If we fail to queue the ABTS then return this command to
818 * the SCSI layer as it will own and free the xid
819 */
820 rc = SUCCESS;
821 qedf_scsi_done(qedf, io_req, DID_ERROR);
822 goto drop_rdata_kref;
823 }
824
825 wait_for_completion(&io_req->abts_done);
826
827 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
828 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
829 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
830 /*
831 * If we get a reponse to the abort this is success from
832 * the perspective that all references to the command have
833 * been removed from the driver and firmware
834 */
835 rc = SUCCESS;
836 } else {
837 /* If the abort and cleanup failed then return a failure */
838 rc = FAILED;
839 }
840
841 if (rc == SUCCESS)
842 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
843 io_req->xid);
844 else
845 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
846 io_req->xid);
847
848 drop_rdata_kref:
849 kref_put(&rdata->kref, fc_rport_destroy);
850 out:
851 if (got_ref)
852 kref_put(&io_req->refcount, qedf_release_cmd);
853 return rc;
854 }
855
856 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
857 {
858 QEDF_ERR(NULL, "%d:0:%d:%lld: TARGET RESET Issued...",
859 sc_cmd->device->host->host_no, sc_cmd->device->id,
860 sc_cmd->device->lun);
861 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
862 }
863
864 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
865 {
866 QEDF_ERR(NULL, "%d:0:%d:%lld: LUN RESET Issued... ",
867 sc_cmd->device->host->host_no, sc_cmd->device->id,
868 sc_cmd->device->lun);
869 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
870 }
871
872 bool qedf_wait_for_upload(struct qedf_ctx *qedf)
873 {
874 struct qedf_rport *fcport = NULL;
875 int wait_cnt = 120;
876
877 while (wait_cnt--) {
878 if (atomic_read(&qedf->num_offloads))
879 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
880 "Waiting for all uploads to complete num_offloads = 0x%x.\n",
881 atomic_read(&qedf->num_offloads));
882 else
883 return true;
884 msleep(500);
885 }
886
887 rcu_read_lock();
888 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
889 if (fcport && test_bit(QEDF_RPORT_SESSION_READY,
890 &fcport->flags)) {
891 if (fcport->rdata)
892 QEDF_ERR(&qedf->dbg_ctx,
893 "Waiting for fcport %p portid=%06x.\n",
894 fcport, fcport->rdata->ids.port_id);
895 } else {
896 QEDF_ERR(&qedf->dbg_ctx,
897 "Waiting for fcport %p.\n", fcport);
898 }
899 }
900 rcu_read_unlock();
901 return false;
902
903 }
904
905 /* Performs soft reset of qedf_ctx by simulating a link down/up */
906 void qedf_ctx_soft_reset(struct fc_lport *lport)
907 {
908 struct qedf_ctx *qedf;
909 struct qed_link_output if_link;
910
911 if (lport->vport) {
912 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
913 return;
914 }
915
916 qedf = lport_priv(lport);
917
918 qedf->flogi_pending = 0;
919 /* For host reset, essentially do a soft link up/down */
920 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
921 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
922 "Queuing link down work.\n");
923 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
924 0);
925
926 if (qedf_wait_for_upload(qedf) == false) {
927 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
928 WARN_ON(atomic_read(&qedf->num_offloads));
929 }
930
931 /* Before setting link up query physical link state */
932 qed_ops->common->get_link(qedf->cdev, &if_link);
933 /* Bail if the physical link is not up */
934 if (!if_link.link_up) {
935 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
936 "Physical link is not up.\n");
937 return;
938 }
939 /* Flush and wait to make sure link down is processed */
940 flush_delayed_work(&qedf->link_update);
941 msleep(500);
942
943 atomic_set(&qedf->link_state, QEDF_LINK_UP);
944 qedf->vlan_id = 0;
945 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
946 "Queue link up work.\n");
947 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
948 0);
949 }
950
951 /* Reset the host by gracefully logging out and then logging back in */
952 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
953 {
954 struct fc_lport *lport;
955 struct qedf_ctx *qedf;
956
957 lport = shost_priv(sc_cmd->device->host);
958 qedf = lport_priv(lport);
959
960 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
961 test_bit(QEDF_UNLOADING, &qedf->flags))
962 return FAILED;
963
964 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
965
966 qedf_ctx_soft_reset(lport);
967
968 return SUCCESS;
969 }
970
971 static int qedf_slave_configure(struct scsi_device *sdev)
972 {
973 if (qedf_queue_depth) {
974 scsi_change_queue_depth(sdev, qedf_queue_depth);
975 }
976
977 return 0;
978 }
979
980 static struct scsi_host_template qedf_host_template = {
981 .module = THIS_MODULE,
982 .name = QEDF_MODULE_NAME,
983 .this_id = -1,
984 .cmd_per_lun = 32,
985 .max_sectors = 0xffff,
986 .queuecommand = qedf_queuecommand,
987 .shost_attrs = qedf_host_attrs,
988 .eh_abort_handler = qedf_eh_abort,
989 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
990 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
991 .eh_host_reset_handler = qedf_eh_host_reset,
992 .slave_configure = qedf_slave_configure,
993 .dma_boundary = QED_HW_DMA_BOUNDARY,
994 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
995 .can_queue = FCOE_PARAMS_NUM_TASKS,
996 .change_queue_depth = scsi_change_queue_depth,
997 };
998
999 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
1000 {
1001 int rc;
1002
1003 spin_lock(&qedf_global_lock);
1004 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
1005 spin_unlock(&qedf_global_lock);
1006
1007 return rc;
1008 }
1009
1010 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
1011 {
1012 struct qedf_rport *fcport;
1013 struct fc_rport_priv *rdata;
1014
1015 rcu_read_lock();
1016 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
1017 rdata = fcport->rdata;
1018 if (rdata == NULL)
1019 continue;
1020 if (rdata->ids.port_id == port_id) {
1021 rcu_read_unlock();
1022 return fcport;
1023 }
1024 }
1025 rcu_read_unlock();
1026
1027 /* Return NULL to caller to let them know fcport was not found */
1028 return NULL;
1029 }
1030
1031 /* Transmits an ELS frame over an offloaded session */
1032 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
1033 {
1034 struct fc_frame_header *fh;
1035 int rc = 0;
1036
1037 fh = fc_frame_header_get(fp);
1038 if ((fh->fh_type == FC_TYPE_ELS) &&
1039 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1040 switch (fc_frame_payload_op(fp)) {
1041 case ELS_ADISC:
1042 qedf_send_adisc(fcport, fp);
1043 rc = 1;
1044 break;
1045 }
1046 }
1047
1048 return rc;
1049 }
1050
1051 /*
1052 * qedf_xmit - qedf FCoE frame transmit function
1053 */
1054 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
1055 {
1056 struct fc_lport *base_lport;
1057 struct qedf_ctx *qedf;
1058 struct ethhdr *eh;
1059 struct fcoe_crc_eof *cp;
1060 struct sk_buff *skb;
1061 struct fc_frame_header *fh;
1062 struct fcoe_hdr *hp;
1063 u8 sof, eof;
1064 u32 crc;
1065 unsigned int hlen, tlen, elen;
1066 int wlen;
1067 struct fc_stats *stats;
1068 struct fc_lport *tmp_lport;
1069 struct fc_lport *vn_port = NULL;
1070 struct qedf_rport *fcport;
1071 int rc;
1072 u16 vlan_tci = 0;
1073
1074 qedf = (struct qedf_ctx *)lport_priv(lport);
1075
1076 fh = fc_frame_header_get(fp);
1077 skb = fp_skb(fp);
1078
1079 /* Filter out traffic to other NPIV ports on the same host */
1080 if (lport->vport)
1081 base_lport = shost_priv(vport_to_shost(lport->vport));
1082 else
1083 base_lport = lport;
1084
1085 /* Flag if the destination is the base port */
1086 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
1087 vn_port = base_lport;
1088 } else {
1089 /* Got through the list of vports attached to the base_lport
1090 * and see if we have a match with the destination address.
1091 */
1092 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
1093 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
1094 vn_port = tmp_lport;
1095 break;
1096 }
1097 }
1098 }
1099 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
1100 struct fc_rport_priv *rdata = NULL;
1101
1102 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
1103 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
1104 kfree_skb(skb);
1105 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
1106 if (rdata) {
1107 rdata->retries = lport->max_rport_retry_count;
1108 kref_put(&rdata->kref, fc_rport_destroy);
1109 }
1110 return -EINVAL;
1111 }
1112 /* End NPIV filtering */
1113
1114 if (!qedf->ctlr.sel_fcf) {
1115 kfree_skb(skb);
1116 return 0;
1117 }
1118
1119 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
1120 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
1121 kfree_skb(skb);
1122 return 0;
1123 }
1124
1125 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
1126 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
1127 kfree_skb(skb);
1128 return 0;
1129 }
1130
1131 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
1132 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
1133 return 0;
1134 }
1135
1136 /* Check to see if this needs to be sent on an offloaded session */
1137 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
1138
1139 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1140 rc = qedf_xmit_l2_frame(fcport, fp);
1141 /*
1142 * If the frame was successfully sent over the middle path
1143 * then do not try to also send it over the LL2 path
1144 */
1145 if (rc)
1146 return 0;
1147 }
1148
1149 sof = fr_sof(fp);
1150 eof = fr_eof(fp);
1151
1152 elen = sizeof(struct ethhdr);
1153 hlen = sizeof(struct fcoe_hdr);
1154 tlen = sizeof(struct fcoe_crc_eof);
1155 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
1156
1157 skb->ip_summed = CHECKSUM_NONE;
1158 crc = fcoe_fc_crc(fp);
1159
1160 /* copy port crc and eof to the skb buff */
1161 if (skb_is_nonlinear(skb)) {
1162 skb_frag_t *frag;
1163
1164 if (qedf_get_paged_crc_eof(skb, tlen)) {
1165 kfree_skb(skb);
1166 return -ENOMEM;
1167 }
1168 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
1169 cp = kmap_atomic(skb_frag_page(frag)) + skb_frag_off(frag);
1170 } else {
1171 cp = skb_put(skb, tlen);
1172 }
1173
1174 memset(cp, 0, sizeof(*cp));
1175 cp->fcoe_eof = eof;
1176 cp->fcoe_crc32 = cpu_to_le32(~crc);
1177 if (skb_is_nonlinear(skb)) {
1178 kunmap_atomic(cp);
1179 cp = NULL;
1180 }
1181
1182
1183 /* adjust skb network/transport offsets to match mac/fcoe/port */
1184 skb_push(skb, elen + hlen);
1185 skb_reset_mac_header(skb);
1186 skb_reset_network_header(skb);
1187 skb->mac_len = elen;
1188 skb->protocol = htons(ETH_P_FCOE);
1189
1190 /*
1191 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
1192 * for FIP/FCoE traffic.
1193 */
1194 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
1195
1196 /* fill up mac and fcoe headers */
1197 eh = eth_hdr(skb);
1198 eh->h_proto = htons(ETH_P_FCOE);
1199 if (qedf->ctlr.map_dest)
1200 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
1201 else
1202 /* insert GW address */
1203 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
1204
1205 /* Set the source MAC address */
1206 ether_addr_copy(eh->h_source, qedf->data_src_addr);
1207
1208 hp = (struct fcoe_hdr *)(eh + 1);
1209 memset(hp, 0, sizeof(*hp));
1210 if (FC_FCOE_VER)
1211 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
1212 hp->fcoe_sof = sof;
1213
1214 /*update tx stats */
1215 stats = per_cpu_ptr(lport->stats, get_cpu());
1216 stats->TxFrames++;
1217 stats->TxWords += wlen;
1218 put_cpu();
1219
1220 /* Get VLAN ID from skb for printing purposes */
1221 __vlan_hwaccel_get_tag(skb, &vlan_tci);
1222
1223 /* send down to lld */
1224 fr_dev(fp) = lport;
1225 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
1226 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
1227 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1228 vlan_tci);
1229 if (qedf_dump_frames)
1230 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1231 1, skb->data, skb->len, false);
1232 rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0);
1233 if (rc) {
1234 QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n", rc);
1235 kfree_skb(skb);
1236 return rc;
1237 }
1238
1239 return 0;
1240 }
1241
1242 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1243 {
1244 int rval = 0;
1245 u32 *pbl;
1246 dma_addr_t page;
1247 int num_pages;
1248
1249 /* Calculate appropriate queue and PBL sizes */
1250 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1251 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1252 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1253 sizeof(void *);
1254 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1255
1256 fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1257 &fcport->sq_dma, GFP_KERNEL);
1258 if (!fcport->sq) {
1259 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1260 rval = 1;
1261 goto out;
1262 }
1263
1264 fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
1265 fcport->sq_pbl_size,
1266 &fcport->sq_pbl_dma, GFP_KERNEL);
1267 if (!fcport->sq_pbl) {
1268 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1269 rval = 1;
1270 goto out_free_sq;
1271 }
1272
1273 /* Create PBL */
1274 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1275 page = fcport->sq_dma;
1276 pbl = (u32 *)fcport->sq_pbl;
1277
1278 while (num_pages--) {
1279 *pbl = U64_LO(page);
1280 pbl++;
1281 *pbl = U64_HI(page);
1282 pbl++;
1283 page += QEDF_PAGE_SIZE;
1284 }
1285
1286 return rval;
1287
1288 out_free_sq:
1289 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1290 fcport->sq_dma);
1291 out:
1292 return rval;
1293 }
1294
1295 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1296 {
1297 if (fcport->sq_pbl)
1298 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1299 fcport->sq_pbl, fcport->sq_pbl_dma);
1300 if (fcport->sq)
1301 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1302 fcport->sq, fcport->sq_dma);
1303 }
1304
1305 static int qedf_offload_connection(struct qedf_ctx *qedf,
1306 struct qedf_rport *fcport)
1307 {
1308 struct qed_fcoe_params_offload conn_info;
1309 u32 port_id;
1310 int rval;
1311 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1312
1313 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1314 "portid=%06x.\n", fcport->rdata->ids.port_id);
1315 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1316 &fcport->fw_cid, &fcport->p_doorbell);
1317 if (rval) {
1318 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1319 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1320 rval = 1; /* For some reason qed returns 0 on failure here */
1321 goto out;
1322 }
1323
1324 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1325 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1326 fcport->fw_cid, fcport->handle);
1327
1328 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1329
1330 /* Fill in the offload connection info */
1331 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1332
1333 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1334 conn_info.sq_next_page_addr =
1335 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1336
1337 /* Need to use our FCoE MAC for the offload session */
1338 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1339
1340 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1341
1342 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1343 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov;
1344 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1345 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1346
1347 /* Set VLAN data */
1348 conn_info.vlan_tag = qedf->vlan_id <<
1349 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1350 conn_info.vlan_tag |=
1351 qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1352 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1353 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1354
1355 /* Set host port source id */
1356 port_id = fc_host_port_id(qedf->lport->host);
1357 fcport->sid = port_id;
1358 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1359 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1360 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1361
1362 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1363
1364 /* Set remote port destination id */
1365 port_id = fcport->rdata->rport->port_id;
1366 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1367 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1368 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1369
1370 conn_info.def_q_idx = 0; /* Default index for send queue? */
1371
1372 /* Set FC-TAPE specific flags if needed */
1373 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1375 "Enable CONF, REC for portid=%06x.\n",
1376 fcport->rdata->ids.port_id);
1377 conn_info.flags |= 1 <<
1378 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1379 conn_info.flags |=
1380 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1381 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1382 }
1383
1384 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1385 if (rval) {
1386 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1387 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1388 goto out_free_conn;
1389 } else
1390 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1391 "succeeded portid=%06x total_sqe=%d.\n",
1392 fcport->rdata->ids.port_id, total_sqe);
1393
1394 spin_lock_init(&fcport->rport_lock);
1395 atomic_set(&fcport->free_sqes, total_sqe);
1396 return 0;
1397 out_free_conn:
1398 qed_ops->release_conn(qedf->cdev, fcport->handle);
1399 out:
1400 return rval;
1401 }
1402
1403 #define QEDF_TERM_BUFF_SIZE 10
1404 static void qedf_upload_connection(struct qedf_ctx *qedf,
1405 struct qedf_rport *fcport)
1406 {
1407 void *term_params;
1408 dma_addr_t term_params_dma;
1409
1410 /* Term params needs to be a DMA coherent buffer as qed shared the
1411 * physical DMA address with the firmware. The buffer may be used in
1412 * the receive path so we may eventually have to move this.
1413 */
1414 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1415 &term_params_dma, GFP_KERNEL);
1416
1417 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1418 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1419
1420 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1421 qed_ops->release_conn(qedf->cdev, fcport->handle);
1422
1423 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1424 term_params_dma);
1425 }
1426
1427 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1428 struct qedf_rport *fcport)
1429 {
1430 struct fc_rport_priv *rdata = fcport->rdata;
1431
1432 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1433 fcport->rdata->ids.port_id);
1434
1435 /* Flush any remaining i/o's before we upload the connection */
1436 qedf_flush_active_ios(fcport, -1);
1437
1438 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1439 qedf_upload_connection(qedf, fcport);
1440 qedf_free_sq(qedf, fcport);
1441 fcport->rdata = NULL;
1442 fcport->qedf = NULL;
1443 kref_put(&rdata->kref, fc_rport_destroy);
1444 }
1445
1446 /*
1447 * This event_callback is called after successful completion of libfc
1448 * initiated target login. qedf can proceed with initiating the session
1449 * establishment.
1450 */
1451 static void qedf_rport_event_handler(struct fc_lport *lport,
1452 struct fc_rport_priv *rdata,
1453 enum fc_rport_event event)
1454 {
1455 struct qedf_ctx *qedf = lport_priv(lport);
1456 struct fc_rport *rport = rdata->rport;
1457 struct fc_rport_libfc_priv *rp;
1458 struct qedf_rport *fcport;
1459 u32 port_id;
1460 int rval;
1461 unsigned long flags;
1462
1463 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1464 "port_id = 0x%x\n", event, rdata->ids.port_id);
1465
1466 switch (event) {
1467 case RPORT_EV_READY:
1468 if (!rport) {
1469 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1470 break;
1471 }
1472
1473 rp = rport->dd_data;
1474 fcport = (struct qedf_rport *)&rp[1];
1475 fcport->qedf = qedf;
1476
1477 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1478 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1479 "portid=0x%x as max number of offloaded sessions "
1480 "reached.\n", rdata->ids.port_id);
1481 return;
1482 }
1483
1484 /*
1485 * Don't try to offload the session again. Can happen when we
1486 * get an ADISC
1487 */
1488 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1489 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1490 "offloaded, portid=0x%x.\n",
1491 rdata->ids.port_id);
1492 return;
1493 }
1494
1495 if (rport->port_id == FC_FID_DIR_SERV) {
1496 /*
1497 * qedf_rport structure doesn't exist for
1498 * directory server.
1499 * We should not come here, as lport will
1500 * take care of fabric login
1501 */
1502 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1503 "exist for dir server port_id=%x\n",
1504 rdata->ids.port_id);
1505 break;
1506 }
1507
1508 if (rdata->spp_type != FC_TYPE_FCP) {
1509 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1510 "Not offloading since spp type isn't FCP\n");
1511 break;
1512 }
1513 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1514 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1515 "Not FCP target so not offloading\n");
1516 break;
1517 }
1518
1519 /* Initial reference held on entry, so this can't fail */
1520 kref_get(&rdata->kref);
1521 fcport->rdata = rdata;
1522 fcport->rport = rport;
1523
1524 rval = qedf_alloc_sq(qedf, fcport);
1525 if (rval) {
1526 qedf_cleanup_fcport(qedf, fcport);
1527 break;
1528 }
1529
1530 /* Set device type */
1531 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1532 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1533 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1534 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1535 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1536 "portid=%06x is a TAPE device.\n",
1537 rdata->ids.port_id);
1538 } else {
1539 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1540 }
1541
1542 rval = qedf_offload_connection(qedf, fcport);
1543 if (rval) {
1544 qedf_cleanup_fcport(qedf, fcport);
1545 break;
1546 }
1547
1548 /* Add fcport to list of qedf_ctx list of offloaded ports */
1549 spin_lock_irqsave(&qedf->hba_lock, flags);
1550 list_add_rcu(&fcport->peers, &qedf->fcports);
1551 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1552
1553 /*
1554 * Set the session ready bit to let everyone know that this
1555 * connection is ready for I/O
1556 */
1557 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1558 atomic_inc(&qedf->num_offloads);
1559
1560 break;
1561 case RPORT_EV_LOGO:
1562 case RPORT_EV_FAILED:
1563 case RPORT_EV_STOP:
1564 port_id = rdata->ids.port_id;
1565 if (port_id == FC_FID_DIR_SERV)
1566 break;
1567
1568 if (rdata->spp_type != FC_TYPE_FCP) {
1569 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1570 "No action since spp type isn't FCP\n");
1571 break;
1572 }
1573 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1574 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1575 "Not FCP target so no action\n");
1576 break;
1577 }
1578
1579 if (!rport) {
1580 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1581 "port_id=%x - rport notcreated Yet!!\n", port_id);
1582 break;
1583 }
1584 rp = rport->dd_data;
1585 /*
1586 * Perform session upload. Note that rdata->peers is already
1587 * removed from disc->rports list before we get this event.
1588 */
1589 fcport = (struct qedf_rport *)&rp[1];
1590
1591 spin_lock_irqsave(&fcport->rport_lock, flags);
1592 /* Only free this fcport if it is offloaded already */
1593 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) &&
1594 !test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1595 &fcport->flags)) {
1596 set_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1597 &fcport->flags);
1598 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1599 qedf_cleanup_fcport(qedf, fcport);
1600 /*
1601 * Remove fcport to list of qedf_ctx list of offloaded
1602 * ports
1603 */
1604 spin_lock_irqsave(&qedf->hba_lock, flags);
1605 list_del_rcu(&fcport->peers);
1606 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1607
1608 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1609 &fcport->flags);
1610 atomic_dec(&qedf->num_offloads);
1611 } else {
1612 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1613 }
1614 break;
1615
1616 case RPORT_EV_NONE:
1617 break;
1618 }
1619 }
1620
1621 static void qedf_abort_io(struct fc_lport *lport)
1622 {
1623 /* NO-OP but need to fill in the template */
1624 }
1625
1626 static void qedf_fcp_cleanup(struct fc_lport *lport)
1627 {
1628 /*
1629 * NO-OP but need to fill in template to prevent a NULL
1630 * function pointer dereference during link down. I/Os
1631 * will be flushed when port is uploaded.
1632 */
1633 }
1634
1635 static struct libfc_function_template qedf_lport_template = {
1636 .frame_send = qedf_xmit,
1637 .fcp_abort_io = qedf_abort_io,
1638 .fcp_cleanup = qedf_fcp_cleanup,
1639 .rport_event_callback = qedf_rport_event_handler,
1640 .elsct_send = qedf_elsct_send,
1641 };
1642
1643 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1644 {
1645 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1646
1647 qedf->ctlr.send = qedf_fip_send;
1648 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1649 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1650 }
1651
1652 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1653 {
1654 struct fc_lport *lport = qedf->lport;
1655 u8 buf[8];
1656 int pos;
1657 uint32_t i;
1658
1659 /*
1660 * fdmi_enabled needs to be set for libfc
1661 * to execute FDMI registration
1662 */
1663 lport->fdmi_enabled = 1;
1664
1665 /*
1666 * Setup the necessary fc_host attributes to that will be used to fill
1667 * in the FDMI information.
1668 */
1669
1670 /* Get the PCI-e Device Serial Number Capability */
1671 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1672 if (pos) {
1673 pos += 4;
1674 for (i = 0; i < 8; i++)
1675 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1676
1677 snprintf(fc_host_serial_number(lport->host),
1678 FC_SERIAL_NUMBER_SIZE,
1679 "%02X%02X%02X%02X%02X%02X%02X%02X",
1680 buf[7], buf[6], buf[5], buf[4],
1681 buf[3], buf[2], buf[1], buf[0]);
1682 } else
1683 snprintf(fc_host_serial_number(lport->host),
1684 FC_SERIAL_NUMBER_SIZE, "Unknown");
1685
1686 snprintf(fc_host_manufacturer(lport->host),
1687 FC_SERIAL_NUMBER_SIZE, "%s", "Marvell Semiconductor Inc.");
1688
1689 if (qedf->pdev->device == QL45xxx) {
1690 snprintf(fc_host_model(lport->host),
1691 FC_SYMBOLIC_NAME_SIZE, "%s", "QL45xxx");
1692
1693 snprintf(fc_host_model_description(lport->host),
1694 FC_SYMBOLIC_NAME_SIZE, "%s",
1695 "Marvell FastLinQ QL45xxx FCoE Adapter");
1696 }
1697
1698 if (qedf->pdev->device == QL41xxx) {
1699 snprintf(fc_host_model(lport->host),
1700 FC_SYMBOLIC_NAME_SIZE, "%s", "QL41xxx");
1701
1702 snprintf(fc_host_model_description(lport->host),
1703 FC_SYMBOLIC_NAME_SIZE, "%s",
1704 "Marvell FastLinQ QL41xxx FCoE Adapter");
1705 }
1706
1707 snprintf(fc_host_hardware_version(lport->host),
1708 FC_VERSION_STRING_SIZE, "Rev %d", qedf->pdev->revision);
1709
1710 snprintf(fc_host_driver_version(lport->host),
1711 FC_VERSION_STRING_SIZE, "%s", QEDF_VERSION);
1712
1713 snprintf(fc_host_firmware_version(lport->host),
1714 FC_VERSION_STRING_SIZE, "%d.%d.%d.%d",
1715 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
1716 FW_ENGINEERING_VERSION);
1717
1718 }
1719
1720 static int qedf_lport_setup(struct qedf_ctx *qedf)
1721 {
1722 struct fc_lport *lport = qedf->lport;
1723
1724 lport->link_up = 0;
1725 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1726 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1727 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1728 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1729 lport->boot_time = jiffies;
1730 lport->e_d_tov = 2 * 1000;
1731 lport->r_a_tov = 10 * 1000;
1732
1733 /* Set NPIV support */
1734 lport->does_npiv = 1;
1735 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1736
1737 fc_set_wwnn(lport, qedf->wwnn);
1738 fc_set_wwpn(lport, qedf->wwpn);
1739
1740 if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0)) {
1741 QEDF_ERR(&qedf->dbg_ctx,
1742 "fcoe_libfc_config failed.\n");
1743 return -ENOMEM;
1744 }
1745
1746 /* Allocate the exchange manager */
1747 fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_PARAMS_NUM_TASKS,
1748 0xfffe, NULL);
1749
1750 if (fc_lport_init_stats(lport))
1751 return -ENOMEM;
1752
1753 /* Finish lport config */
1754 fc_lport_config(lport);
1755
1756 /* Set max frame size */
1757 fc_set_mfs(lport, QEDF_MFS);
1758 fc_host_maxframe_size(lport->host) = lport->mfs;
1759
1760 /* Set default dev_loss_tmo based on module parameter */
1761 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1762
1763 /* Set symbolic node name */
1764 if (qedf->pdev->device == QL45xxx)
1765 snprintf(fc_host_symbolic_name(lport->host), 256,
1766 "Marvell FastLinQ 45xxx FCoE v%s", QEDF_VERSION);
1767
1768 if (qedf->pdev->device == QL41xxx)
1769 snprintf(fc_host_symbolic_name(lport->host), 256,
1770 "Marvell FastLinQ 41xxx FCoE v%s", QEDF_VERSION);
1771
1772 qedf_setup_fdmi(qedf);
1773
1774 return 0;
1775 }
1776
1777 /*
1778 * NPIV functions
1779 */
1780
1781 static int qedf_vport_libfc_config(struct fc_vport *vport,
1782 struct fc_lport *lport)
1783 {
1784 lport->link_up = 0;
1785 lport->qfull = 0;
1786 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1787 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1788 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1789 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1790 lport->boot_time = jiffies;
1791 lport->e_d_tov = 2 * 1000;
1792 lport->r_a_tov = 10 * 1000;
1793 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1794
1795 /* Allocate stats for vport */
1796 if (fc_lport_init_stats(lport))
1797 return -ENOMEM;
1798
1799 /* Finish lport config */
1800 fc_lport_config(lport);
1801
1802 /* offload related configuration */
1803 lport->crc_offload = 0;
1804 lport->seq_offload = 0;
1805 lport->lro_enabled = 0;
1806 lport->lro_xid = 0;
1807 lport->lso_max = 0;
1808
1809 return 0;
1810 }
1811
1812 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1813 {
1814 struct Scsi_Host *shost = vport_to_shost(vport);
1815 struct fc_lport *n_port = shost_priv(shost);
1816 struct fc_lport *vn_port;
1817 struct qedf_ctx *base_qedf = lport_priv(n_port);
1818 struct qedf_ctx *vport_qedf;
1819
1820 char buf[32];
1821 int rc = 0;
1822
1823 rc = fcoe_validate_vport_create(vport);
1824 if (rc) {
1825 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1826 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1827 "WWPN (0x%s) already exists.\n", buf);
1828 goto err1;
1829 }
1830
1831 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1832 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1833 "because link is not up.\n");
1834 rc = -EIO;
1835 goto err1;
1836 }
1837
1838 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1839 if (!vn_port) {
1840 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1841 "for vport.\n");
1842 rc = -ENOMEM;
1843 goto err1;
1844 }
1845
1846 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1847 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1848 buf);
1849
1850 /* Copy some fields from base_qedf */
1851 vport_qedf = lport_priv(vn_port);
1852 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1853
1854 /* Set qedf data specific to this vport */
1855 vport_qedf->lport = vn_port;
1856 /* Use same hba_lock as base_qedf */
1857 vport_qedf->hba_lock = base_qedf->hba_lock;
1858 vport_qedf->pdev = base_qedf->pdev;
1859 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1860 init_completion(&vport_qedf->flogi_compl);
1861 INIT_LIST_HEAD(&vport_qedf->fcports);
1862
1863 rc = qedf_vport_libfc_config(vport, vn_port);
1864 if (rc) {
1865 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1866 "for lport stats.\n");
1867 goto err2;
1868 }
1869
1870 fc_set_wwnn(vn_port, vport->node_name);
1871 fc_set_wwpn(vn_port, vport->port_name);
1872 vport_qedf->wwnn = vn_port->wwnn;
1873 vport_qedf->wwpn = vn_port->wwpn;
1874
1875 vn_port->host->transportt = qedf_fc_vport_transport_template;
1876 vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS;
1877 vn_port->host->max_lun = qedf_max_lun;
1878 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1879 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1880
1881 rc = scsi_add_host(vn_port->host, &vport->dev);
1882 if (rc) {
1883 QEDF_WARN(&base_qedf->dbg_ctx,
1884 "Error adding Scsi_Host rc=0x%x.\n", rc);
1885 goto err2;
1886 }
1887
1888 /* Set default dev_loss_tmo based on module parameter */
1889 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1890
1891 /* Init libfc stuffs */
1892 memcpy(&vn_port->tt, &qedf_lport_template,
1893 sizeof(qedf_lport_template));
1894 fc_exch_init(vn_port);
1895 fc_elsct_init(vn_port);
1896 fc_lport_init(vn_port);
1897 fc_disc_init(vn_port);
1898 fc_disc_config(vn_port, vn_port);
1899
1900
1901 /* Allocate the exchange manager */
1902 shost = vport_to_shost(vport);
1903 n_port = shost_priv(shost);
1904 fc_exch_mgr_list_clone(n_port, vn_port);
1905
1906 /* Set max frame size */
1907 fc_set_mfs(vn_port, QEDF_MFS);
1908
1909 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1910
1911 if (disabled) {
1912 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1913 } else {
1914 vn_port->boot_time = jiffies;
1915 fc_fabric_login(vn_port);
1916 fc_vport_setlink(vn_port);
1917 }
1918
1919 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1920 vn_port);
1921
1922 /* Set up debug context for vport */
1923 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1924 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1925
1926 err2:
1927 scsi_host_put(vn_port->host);
1928 err1:
1929 return rc;
1930 }
1931
1932 static int qedf_vport_destroy(struct fc_vport *vport)
1933 {
1934 struct Scsi_Host *shost = vport_to_shost(vport);
1935 struct fc_lport *n_port = shost_priv(shost);
1936 struct fc_lport *vn_port = vport->dd_data;
1937 struct qedf_ctx *qedf = lport_priv(vn_port);
1938
1939 if (!qedf) {
1940 QEDF_ERR(NULL, "qedf is NULL.\n");
1941 goto out;
1942 }
1943
1944 /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1945 set_bit(QEDF_UNLOADING, &qedf->flags);
1946
1947 mutex_lock(&n_port->lp_mutex);
1948 list_del(&vn_port->list);
1949 mutex_unlock(&n_port->lp_mutex);
1950
1951 fc_fabric_logoff(vn_port);
1952 fc_lport_destroy(vn_port);
1953
1954 /* Detach from scsi-ml */
1955 fc_remove_host(vn_port->host);
1956 scsi_remove_host(vn_port->host);
1957
1958 /*
1959 * Only try to release the exchange manager if the vn_port
1960 * configuration is complete.
1961 */
1962 if (vn_port->state == LPORT_ST_READY)
1963 fc_exch_mgr_free(vn_port);
1964
1965 /* Free memory used by statistical counters */
1966 fc_lport_free_stats(vn_port);
1967
1968 /* Release Scsi_Host */
1969 if (vn_port->host)
1970 scsi_host_put(vn_port->host);
1971
1972 out:
1973 return 0;
1974 }
1975
1976 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1977 {
1978 struct fc_lport *lport = vport->dd_data;
1979
1980 if (disable) {
1981 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1982 fc_fabric_logoff(lport);
1983 } else {
1984 lport->boot_time = jiffies;
1985 fc_fabric_login(lport);
1986 fc_vport_setlink(lport);
1987 }
1988 return 0;
1989 }
1990
1991 /*
1992 * During removal we need to wait for all the vports associated with a port
1993 * to be destroyed so we avoid a race condition where libfc is still trying
1994 * to reap vports while the driver remove function has already reaped the
1995 * driver contexts associated with the physical port.
1996 */
1997 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1998 {
1999 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
2000
2001 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2002 "Entered.\n");
2003 while (fc_host->npiv_vports_inuse > 0) {
2004 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
2005 "Waiting for all vports to be reaped.\n");
2006 msleep(1000);
2007 }
2008 }
2009
2010 /**
2011 * qedf_fcoe_reset - Resets the fcoe
2012 *
2013 * @shost: shost the reset is from
2014 *
2015 * Returns: always 0
2016 */
2017 static int qedf_fcoe_reset(struct Scsi_Host *shost)
2018 {
2019 struct fc_lport *lport = shost_priv(shost);
2020
2021 qedf_ctx_soft_reset(lport);
2022 return 0;
2023 }
2024
2025 static void qedf_get_host_port_id(struct Scsi_Host *shost)
2026 {
2027 struct fc_lport *lport = shost_priv(shost);
2028
2029 fc_host_port_id(shost) = lport->port_id;
2030 }
2031
2032 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
2033 *shost)
2034 {
2035 struct fc_host_statistics *qedf_stats;
2036 struct fc_lport *lport = shost_priv(shost);
2037 struct qedf_ctx *qedf = lport_priv(lport);
2038 struct qed_fcoe_stats *fw_fcoe_stats;
2039
2040 qedf_stats = fc_get_host_stats(shost);
2041
2042 /* We don't collect offload stats for specific NPIV ports */
2043 if (lport->vport)
2044 goto out;
2045
2046 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
2047 if (!fw_fcoe_stats) {
2048 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
2049 "fw_fcoe_stats.\n");
2050 goto out;
2051 }
2052
2053 mutex_lock(&qedf->stats_mutex);
2054
2055 /* Query firmware for offload stats */
2056 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
2057
2058 /*
2059 * The expectation is that we add our offload stats to the stats
2060 * being maintained by libfc each time the fc_get_host_status callback
2061 * is invoked. The additions are not carried over for each call to
2062 * the fc_get_host_stats callback.
2063 */
2064 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
2065 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
2066 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
2067 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
2068 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
2069 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
2070 qedf_stats->fcp_input_megabytes +=
2071 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
2072 qedf_stats->fcp_output_megabytes +=
2073 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
2074 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
2075 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
2076 qedf_stats->invalid_crc_count +=
2077 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
2078 qedf_stats->dumped_frames =
2079 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2080 qedf_stats->error_frames +=
2081 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
2082 qedf_stats->fcp_input_requests += qedf->input_requests;
2083 qedf_stats->fcp_output_requests += qedf->output_requests;
2084 qedf_stats->fcp_control_requests += qedf->control_requests;
2085 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
2086 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
2087
2088 mutex_unlock(&qedf->stats_mutex);
2089 kfree(fw_fcoe_stats);
2090 out:
2091 return qedf_stats;
2092 }
2093
2094 static struct fc_function_template qedf_fc_transport_fn = {
2095 .show_host_node_name = 1,
2096 .show_host_port_name = 1,
2097 .show_host_supported_classes = 1,
2098 .show_host_supported_fc4s = 1,
2099 .show_host_active_fc4s = 1,
2100 .show_host_maxframe_size = 1,
2101
2102 .get_host_port_id = qedf_get_host_port_id,
2103 .show_host_port_id = 1,
2104 .show_host_supported_speeds = 1,
2105 .get_host_speed = fc_get_host_speed,
2106 .show_host_speed = 1,
2107 .show_host_port_type = 1,
2108 .get_host_port_state = fc_get_host_port_state,
2109 .show_host_port_state = 1,
2110 .show_host_symbolic_name = 1,
2111
2112 /*
2113 * Tell FC transport to allocate enough space to store the backpointer
2114 * for the associate qedf_rport struct.
2115 */
2116 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2117 sizeof(struct qedf_rport)),
2118 .show_rport_maxframe_size = 1,
2119 .show_rport_supported_classes = 1,
2120 .show_host_fabric_name = 1,
2121 .show_starget_node_name = 1,
2122 .show_starget_port_name = 1,
2123 .show_starget_port_id = 1,
2124 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2125 .show_rport_dev_loss_tmo = 1,
2126 .get_fc_host_stats = qedf_fc_get_host_stats,
2127 .issue_fc_host_lip = qedf_fcoe_reset,
2128 .vport_create = qedf_vport_create,
2129 .vport_delete = qedf_vport_destroy,
2130 .vport_disable = qedf_vport_disable,
2131 .bsg_request = fc_lport_bsg_request,
2132 };
2133
2134 static struct fc_function_template qedf_fc_vport_transport_fn = {
2135 .show_host_node_name = 1,
2136 .show_host_port_name = 1,
2137 .show_host_supported_classes = 1,
2138 .show_host_supported_fc4s = 1,
2139 .show_host_active_fc4s = 1,
2140 .show_host_maxframe_size = 1,
2141 .show_host_port_id = 1,
2142 .show_host_supported_speeds = 1,
2143 .get_host_speed = fc_get_host_speed,
2144 .show_host_speed = 1,
2145 .show_host_port_type = 1,
2146 .get_host_port_state = fc_get_host_port_state,
2147 .show_host_port_state = 1,
2148 .show_host_symbolic_name = 1,
2149 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
2150 sizeof(struct qedf_rport)),
2151 .show_rport_maxframe_size = 1,
2152 .show_rport_supported_classes = 1,
2153 .show_host_fabric_name = 1,
2154 .show_starget_node_name = 1,
2155 .show_starget_port_name = 1,
2156 .show_starget_port_id = 1,
2157 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
2158 .show_rport_dev_loss_tmo = 1,
2159 .get_fc_host_stats = fc_get_host_stats,
2160 .issue_fc_host_lip = qedf_fcoe_reset,
2161 .bsg_request = fc_lport_bsg_request,
2162 };
2163
2164 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
2165 {
2166 struct qedf_ctx *qedf = fp->qedf;
2167 struct global_queue *que;
2168 struct qed_sb_info *sb_info = fp->sb_info;
2169 struct status_block_e4 *sb = sb_info->sb_virt;
2170 u16 prod_idx;
2171
2172 /* Get the pointer to the global CQ this completion is on */
2173 que = qedf->global_queues[fp->sb_id];
2174
2175 /* Be sure all responses have been written to PI */
2176 rmb();
2177
2178 /* Get the current firmware producer index */
2179 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2180
2181 return (que->cq_prod_idx != prod_idx);
2182 }
2183
2184 /*
2185 * Interrupt handler code.
2186 */
2187
2188 /* Process completion queue and copy CQE contents for deferred processesing
2189 *
2190 * Return true if we should wake the I/O thread, false if not.
2191 */
2192 static bool qedf_process_completions(struct qedf_fastpath *fp)
2193 {
2194 struct qedf_ctx *qedf = fp->qedf;
2195 struct qed_sb_info *sb_info = fp->sb_info;
2196 struct status_block_e4 *sb = sb_info->sb_virt;
2197 struct global_queue *que;
2198 u16 prod_idx;
2199 struct fcoe_cqe *cqe;
2200 struct qedf_io_work *io_work;
2201 int num_handled = 0;
2202 unsigned int cpu;
2203 struct qedf_ioreq *io_req = NULL;
2204 u16 xid;
2205 u16 new_cqes;
2206 u32 comp_type;
2207
2208 /* Get the current firmware producer index */
2209 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
2210
2211 /* Get the pointer to the global CQ this completion is on */
2212 que = qedf->global_queues[fp->sb_id];
2213
2214 /* Calculate the amount of new elements since last processing */
2215 new_cqes = (prod_idx >= que->cq_prod_idx) ?
2216 (prod_idx - que->cq_prod_idx) :
2217 0x10000 - que->cq_prod_idx + prod_idx;
2218
2219 /* Save producer index */
2220 que->cq_prod_idx = prod_idx;
2221
2222 while (new_cqes) {
2223 fp->completions++;
2224 num_handled++;
2225 cqe = &que->cq[que->cq_cons_idx];
2226
2227 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2228 FCOE_CQE_CQE_TYPE_MASK;
2229
2230 /*
2231 * Process unsolicited CQEs directly in the interrupt handler
2232 * sine we need the fastpath ID
2233 */
2234 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
2235 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
2236 "Unsolicated CQE.\n");
2237 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
2238 /*
2239 * Don't add a work list item. Increment consumer
2240 * consumer index and move on.
2241 */
2242 goto inc_idx;
2243 }
2244
2245 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2246 io_req = &qedf->cmd_mgr->cmds[xid];
2247
2248 /*
2249 * Figure out which percpu thread we should queue this I/O
2250 * on.
2251 */
2252 if (!io_req)
2253 /* If there is not io_req assocated with this CQE
2254 * just queue it on CPU 0
2255 */
2256 cpu = 0;
2257 else {
2258 cpu = io_req->cpu;
2259 io_req->int_cpu = smp_processor_id();
2260 }
2261
2262 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
2263 if (!io_work) {
2264 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
2265 "work for I/O completion.\n");
2266 continue;
2267 }
2268 memset(io_work, 0, sizeof(struct qedf_io_work));
2269
2270 INIT_WORK(&io_work->work, qedf_fp_io_handler);
2271
2272 /* Copy contents of CQE for deferred processing */
2273 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
2274
2275 io_work->qedf = fp->qedf;
2276 io_work->fp = NULL; /* Only used for unsolicited frames */
2277
2278 queue_work_on(cpu, qedf_io_wq, &io_work->work);
2279
2280 inc_idx:
2281 que->cq_cons_idx++;
2282 if (que->cq_cons_idx == fp->cq_num_entries)
2283 que->cq_cons_idx = 0;
2284 new_cqes--;
2285 }
2286
2287 return true;
2288 }
2289
2290
2291 /* MSI-X fastpath handler code */
2292 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
2293 {
2294 struct qedf_fastpath *fp = dev_id;
2295
2296 if (!fp) {
2297 QEDF_ERR(NULL, "fp is null.\n");
2298 return IRQ_HANDLED;
2299 }
2300 if (!fp->sb_info) {
2301 QEDF_ERR(NULL, "fp->sb_info in null.");
2302 return IRQ_HANDLED;
2303 }
2304
2305 /*
2306 * Disable interrupts for this status block while we process new
2307 * completions
2308 */
2309 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2310
2311 while (1) {
2312 qedf_process_completions(fp);
2313
2314 if (qedf_fp_has_work(fp) == 0) {
2315 /* Update the sb information */
2316 qed_sb_update_sb_idx(fp->sb_info);
2317
2318 /* Check for more work */
2319 rmb();
2320
2321 if (qedf_fp_has_work(fp) == 0) {
2322 /* Re-enable interrupts */
2323 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2324 return IRQ_HANDLED;
2325 }
2326 }
2327 }
2328
2329 /* Do we ever want to break out of above loop? */
2330 return IRQ_HANDLED;
2331 }
2332
2333 /* simd handler for MSI/INTa */
2334 static void qedf_simd_int_handler(void *cookie)
2335 {
2336 /* Cookie is qedf_ctx struct */
2337 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2338
2339 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2340 }
2341
2342 #define QEDF_SIMD_HANDLER_NUM 0
2343 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2344 {
2345 int i;
2346 u16 vector_idx = 0;
2347 u32 vector;
2348
2349 if (qedf->int_info.msix_cnt) {
2350 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2351 vector_idx = i * qedf->dev_info.common.num_hwfns +
2352 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2353 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2354 "Freeing IRQ #%d vector_idx=%d.\n",
2355 i, vector_idx);
2356 vector = qedf->int_info.msix[vector_idx].vector;
2357 synchronize_irq(vector);
2358 irq_set_affinity_hint(vector, NULL);
2359 irq_set_affinity_notifier(vector, NULL);
2360 free_irq(vector, &qedf->fp_array[i]);
2361 }
2362 } else
2363 qed_ops->common->simd_handler_clean(qedf->cdev,
2364 QEDF_SIMD_HANDLER_NUM);
2365
2366 qedf->int_info.used_cnt = 0;
2367 qed_ops->common->set_fp_int(qedf->cdev, 0);
2368 }
2369
2370 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2371 {
2372 int i, rc, cpu;
2373 u16 vector_idx = 0;
2374 u32 vector;
2375
2376 cpu = cpumask_first(cpu_online_mask);
2377 for (i = 0; i < qedf->num_queues; i++) {
2378 vector_idx = i * qedf->dev_info.common.num_hwfns +
2379 qed_ops->common->get_affin_hwfn_idx(qedf->cdev);
2380 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
2381 "Requesting IRQ #%d vector_idx=%d.\n",
2382 i, vector_idx);
2383 vector = qedf->int_info.msix[vector_idx].vector;
2384 rc = request_irq(vector, qedf_msix_handler, 0, "qedf",
2385 &qedf->fp_array[i]);
2386
2387 if (rc) {
2388 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2389 qedf_sync_free_irqs(qedf);
2390 return rc;
2391 }
2392
2393 qedf->int_info.used_cnt++;
2394 rc = irq_set_affinity_hint(vector, get_cpu_mask(cpu));
2395 cpu = cpumask_next(cpu, cpu_online_mask);
2396 }
2397
2398 return 0;
2399 }
2400
2401 static int qedf_setup_int(struct qedf_ctx *qedf)
2402 {
2403 int rc = 0;
2404
2405 /*
2406 * Learn interrupt configuration
2407 */
2408 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2409 if (rc <= 0)
2410 return 0;
2411
2412 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2413 if (rc)
2414 return 0;
2415
2416 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2417 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2418 num_online_cpus());
2419
2420 if (qedf->int_info.msix_cnt)
2421 return qedf_request_msix_irq(qedf);
2422
2423 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2424 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2425 qedf->int_info.used_cnt = 1;
2426
2427 QEDF_ERR(&qedf->dbg_ctx,
2428 "Cannot load driver due to a lack of MSI-X vectors.\n");
2429 return -EINVAL;
2430 }
2431
2432 /* Main function for libfc frame reception */
2433 static void qedf_recv_frame(struct qedf_ctx *qedf,
2434 struct sk_buff *skb)
2435 {
2436 u32 fr_len;
2437 struct fc_lport *lport;
2438 struct fc_frame_header *fh;
2439 struct fcoe_crc_eof crc_eof;
2440 struct fc_frame *fp;
2441 u8 *mac = NULL;
2442 u8 *dest_mac = NULL;
2443 struct fcoe_hdr *hp;
2444 struct qedf_rport *fcport;
2445 struct fc_lport *vn_port;
2446 u32 f_ctl;
2447
2448 lport = qedf->lport;
2449 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2450 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2451 kfree_skb(skb);
2452 return;
2453 }
2454
2455 if (skb_is_nonlinear(skb))
2456 skb_linearize(skb);
2457 mac = eth_hdr(skb)->h_source;
2458 dest_mac = eth_hdr(skb)->h_dest;
2459
2460 /* Pull the header */
2461 hp = (struct fcoe_hdr *)skb->data;
2462 fh = (struct fc_frame_header *) skb_transport_header(skb);
2463 skb_pull(skb, sizeof(struct fcoe_hdr));
2464 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2465
2466 fp = (struct fc_frame *)skb;
2467 fc_frame_init(fp);
2468 fr_dev(fp) = lport;
2469 fr_sof(fp) = hp->fcoe_sof;
2470 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2471 QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n");
2472 kfree_skb(skb);
2473 return;
2474 }
2475 fr_eof(fp) = crc_eof.fcoe_eof;
2476 fr_crc(fp) = crc_eof.fcoe_crc32;
2477 if (pskb_trim(skb, fr_len)) {
2478 QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n");
2479 kfree_skb(skb);
2480 return;
2481 }
2482
2483 fh = fc_frame_header_get(fp);
2484
2485 /*
2486 * Invalid frame filters.
2487 */
2488
2489 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2490 fh->fh_type == FC_TYPE_FCP) {
2491 /* Drop FCP data. We dont this in L2 path */
2492 kfree_skb(skb);
2493 return;
2494 }
2495 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2496 fh->fh_type == FC_TYPE_ELS) {
2497 switch (fc_frame_payload_op(fp)) {
2498 case ELS_LOGO:
2499 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2500 /* drop non-FIP LOGO */
2501 kfree_skb(skb);
2502 return;
2503 }
2504 break;
2505 }
2506 }
2507
2508 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2509 /* Drop incoming ABTS */
2510 kfree_skb(skb);
2511 return;
2512 }
2513
2514 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2515 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2516 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2517 kfree_skb(skb);
2518 return;
2519 }
2520
2521 if (qedf->ctlr.state) {
2522 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2523 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2524 "Wrong source address: mac:%pM dest_addr:%pM.\n",
2525 mac, qedf->ctlr.dest_addr);
2526 kfree_skb(skb);
2527 return;
2528 }
2529 }
2530
2531 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2532
2533 /*
2534 * If the destination ID from the frame header does not match what we
2535 * have on record for lport and the search for a NPIV port came up
2536 * empty then this is not addressed to our port so simply drop it.
2537 */
2538 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2539 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2540 "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n",
2541 lport->port_id, ntoh24(fh->fh_d_id));
2542 kfree_skb(skb);
2543 return;
2544 }
2545
2546 f_ctl = ntoh24(fh->fh_f_ctl);
2547 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2548 (f_ctl & FC_FC_EX_CTX)) {
2549 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2550 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2551 "Dropping ABTS response as both SEQ/EX CTX set.\n");
2552 kfree_skb(skb);
2553 return;
2554 }
2555
2556 /*
2557 * If a connection is uploading, drop incoming FCoE frames as there
2558 * is a small window where we could try to return a frame while libfc
2559 * is trying to clean things up.
2560 */
2561
2562 /* Get fcport associated with d_id if it exists */
2563 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2564
2565 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2566 &fcport->flags)) {
2567 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2568 "Connection uploading, dropping fp=%p.\n", fp);
2569 kfree_skb(skb);
2570 return;
2571 }
2572
2573 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2574 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2575 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2576 fh->fh_type);
2577 if (qedf_dump_frames)
2578 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2579 1, skb->data, skb->len, false);
2580 fc_exch_recv(lport, fp);
2581 }
2582
2583 static void qedf_ll2_process_skb(struct work_struct *work)
2584 {
2585 struct qedf_skb_work *skb_work =
2586 container_of(work, struct qedf_skb_work, work);
2587 struct qedf_ctx *qedf = skb_work->qedf;
2588 struct sk_buff *skb = skb_work->skb;
2589 struct ethhdr *eh;
2590
2591 if (!qedf) {
2592 QEDF_ERR(NULL, "qedf is NULL\n");
2593 goto err_out;
2594 }
2595
2596 eh = (struct ethhdr *)skb->data;
2597
2598 /* Undo VLAN encapsulation */
2599 if (eh->h_proto == htons(ETH_P_8021Q)) {
2600 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2601 eh = skb_pull(skb, VLAN_HLEN);
2602 skb_reset_mac_header(skb);
2603 }
2604
2605 /*
2606 * Process either a FIP frame or FCoE frame based on the
2607 * protocol value. If it's not either just drop the
2608 * frame.
2609 */
2610 if (eh->h_proto == htons(ETH_P_FIP)) {
2611 qedf_fip_recv(qedf, skb);
2612 goto out;
2613 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2614 __skb_pull(skb, ETH_HLEN);
2615 qedf_recv_frame(qedf, skb);
2616 goto out;
2617 } else
2618 goto err_out;
2619
2620 err_out:
2621 kfree_skb(skb);
2622 out:
2623 kfree(skb_work);
2624 return;
2625 }
2626
2627 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2628 u32 arg1, u32 arg2)
2629 {
2630 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2631 struct qedf_skb_work *skb_work;
2632
2633 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
2634 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2,
2635 "Dropping frame as link state is down.\n");
2636 kfree_skb(skb);
2637 return 0;
2638 }
2639
2640 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2641 if (!skb_work) {
2642 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2643 "dropping frame.\n");
2644 kfree_skb(skb);
2645 return 0;
2646 }
2647
2648 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2649 skb_work->skb = skb;
2650 skb_work->qedf = qedf;
2651 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2652
2653 return 0;
2654 }
2655
2656 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2657 .rx_cb = qedf_ll2_rx,
2658 .tx_cb = NULL,
2659 };
2660
2661 /* Main thread to process I/O completions */
2662 void qedf_fp_io_handler(struct work_struct *work)
2663 {
2664 struct qedf_io_work *io_work =
2665 container_of(work, struct qedf_io_work, work);
2666 u32 comp_type;
2667
2668 /*
2669 * Deferred part of unsolicited CQE sends
2670 * frame to libfc.
2671 */
2672 comp_type = (io_work->cqe.cqe_data >>
2673 FCOE_CQE_CQE_TYPE_SHIFT) &
2674 FCOE_CQE_CQE_TYPE_MASK;
2675 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2676 io_work->fp)
2677 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2678 else
2679 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2680
2681 kfree(io_work);
2682 }
2683
2684 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2685 struct qed_sb_info *sb_info, u16 sb_id)
2686 {
2687 struct status_block_e4 *sb_virt;
2688 dma_addr_t sb_phys;
2689 int ret;
2690
2691 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2692 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
2693
2694 if (!sb_virt) {
2695 QEDF_ERR(&qedf->dbg_ctx,
2696 "Status block allocation failed for id = %d.\n",
2697 sb_id);
2698 return -ENOMEM;
2699 }
2700
2701 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2702 sb_id, QED_SB_TYPE_STORAGE);
2703
2704 if (ret) {
2705 QEDF_ERR(&qedf->dbg_ctx,
2706 "Status block initialization failed (0x%x) for id = %d.\n",
2707 ret, sb_id);
2708 return ret;
2709 }
2710
2711 return 0;
2712 }
2713
2714 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2715 {
2716 if (sb_info->sb_virt)
2717 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2718 (void *)sb_info->sb_virt, sb_info->sb_phys);
2719 }
2720
2721 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2722 {
2723 int id;
2724 struct qedf_fastpath *fp = NULL;
2725
2726 for (id = 0; id < qedf->num_queues; id++) {
2727 fp = &(qedf->fp_array[id]);
2728 if (fp->sb_id == QEDF_SB_ID_NULL)
2729 break;
2730 qedf_free_sb(qedf, fp->sb_info);
2731 kfree(fp->sb_info);
2732 }
2733 kfree(qedf->fp_array);
2734 }
2735
2736 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2737 {
2738 int id;
2739 struct qedf_fastpath *fp;
2740 int ret;
2741
2742 qedf->fp_array =
2743 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2744 GFP_KERNEL);
2745
2746 if (!qedf->fp_array) {
2747 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2748 "failed.\n");
2749 return -ENOMEM;
2750 }
2751
2752 for (id = 0; id < qedf->num_queues; id++) {
2753 fp = &(qedf->fp_array[id]);
2754 fp->sb_id = QEDF_SB_ID_NULL;
2755 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2756 if (!fp->sb_info) {
2757 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2758 "allocation failed.\n");
2759 goto err;
2760 }
2761 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2762 if (ret) {
2763 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2764 "initialization failed.\n");
2765 goto err;
2766 }
2767 fp->sb_id = id;
2768 fp->qedf = qedf;
2769 fp->cq_num_entries =
2770 qedf->global_queues[id]->cq_mem_size /
2771 sizeof(struct fcoe_cqe);
2772 }
2773 err:
2774 return 0;
2775 }
2776
2777 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2778 {
2779 u16 xid;
2780 struct qedf_ioreq *io_req;
2781 struct qedf_rport *fcport;
2782 u32 comp_type;
2783
2784 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2785 FCOE_CQE_CQE_TYPE_MASK;
2786
2787 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2788 io_req = &qedf->cmd_mgr->cmds[xid];
2789
2790 /* Completion not for a valid I/O anymore so just return */
2791 if (!io_req) {
2792 QEDF_ERR(&qedf->dbg_ctx,
2793 "io_req is NULL for xid=0x%x.\n", xid);
2794 return;
2795 }
2796
2797 fcport = io_req->fcport;
2798
2799 if (fcport == NULL) {
2800 QEDF_ERR(&qedf->dbg_ctx,
2801 "fcport is NULL for xid=0x%x io_req=%p.\n",
2802 xid, io_req);
2803 return;
2804 }
2805
2806 /*
2807 * Check that fcport is offloaded. If it isn't then the spinlock
2808 * isn't valid and shouldn't be taken. We should just return.
2809 */
2810 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2811 QEDF_ERR(&qedf->dbg_ctx,
2812 "Session not offloaded yet, fcport = %p.\n", fcport);
2813 return;
2814 }
2815
2816
2817 switch (comp_type) {
2818 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2819 atomic_inc(&fcport->free_sqes);
2820 switch (io_req->cmd_type) {
2821 case QEDF_SCSI_CMD:
2822 qedf_scsi_completion(qedf, cqe, io_req);
2823 break;
2824 case QEDF_ELS:
2825 qedf_process_els_compl(qedf, cqe, io_req);
2826 break;
2827 case QEDF_TASK_MGMT_CMD:
2828 qedf_process_tmf_compl(qedf, cqe, io_req);
2829 break;
2830 case QEDF_SEQ_CLEANUP:
2831 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2832 break;
2833 }
2834 break;
2835 case FCOE_ERROR_DETECTION_CQE_TYPE:
2836 atomic_inc(&fcport->free_sqes);
2837 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2838 "Error detect CQE.\n");
2839 qedf_process_error_detect(qedf, cqe, io_req);
2840 break;
2841 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2842 atomic_inc(&fcport->free_sqes);
2843 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2844 "Cleanup CQE.\n");
2845 qedf_process_cleanup_compl(qedf, cqe, io_req);
2846 break;
2847 case FCOE_ABTS_CQE_TYPE:
2848 atomic_inc(&fcport->free_sqes);
2849 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2850 "Abort CQE.\n");
2851 qedf_process_abts_compl(qedf, cqe, io_req);
2852 break;
2853 case FCOE_DUMMY_CQE_TYPE:
2854 atomic_inc(&fcport->free_sqes);
2855 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2856 "Dummy CQE.\n");
2857 break;
2858 case FCOE_LOCAL_COMP_CQE_TYPE:
2859 atomic_inc(&fcport->free_sqes);
2860 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2861 "Local completion CQE.\n");
2862 break;
2863 case FCOE_WARNING_CQE_TYPE:
2864 atomic_inc(&fcport->free_sqes);
2865 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2866 "Warning CQE.\n");
2867 qedf_process_warning_compl(qedf, cqe, io_req);
2868 break;
2869 case MAX_FCOE_CQE_TYPE:
2870 atomic_inc(&fcport->free_sqes);
2871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2872 "Max FCoE CQE.\n");
2873 break;
2874 default:
2875 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2876 "Default CQE.\n");
2877 break;
2878 }
2879 }
2880
2881 static void qedf_free_bdq(struct qedf_ctx *qedf)
2882 {
2883 int i;
2884
2885 if (qedf->bdq_pbl_list)
2886 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2887 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2888
2889 if (qedf->bdq_pbl)
2890 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2891 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2892
2893 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2894 if (qedf->bdq[i].buf_addr) {
2895 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2896 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2897 }
2898 }
2899 }
2900
2901 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2902 {
2903 int i;
2904 struct global_queue **gl = qedf->global_queues;
2905
2906 for (i = 0; i < qedf->num_queues; i++) {
2907 if (!gl[i])
2908 continue;
2909
2910 if (gl[i]->cq)
2911 dma_free_coherent(&qedf->pdev->dev,
2912 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2913 if (gl[i]->cq_pbl)
2914 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2915 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2916
2917 kfree(gl[i]);
2918 }
2919
2920 qedf_free_bdq(qedf);
2921 }
2922
2923 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2924 {
2925 int i;
2926 struct scsi_bd *pbl;
2927 u64 *list;
2928 dma_addr_t page;
2929
2930 /* Alloc dma memory for BDQ buffers */
2931 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2932 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2933 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2934 if (!qedf->bdq[i].buf_addr) {
2935 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2936 "buffer %d.\n", i);
2937 return -ENOMEM;
2938 }
2939 }
2940
2941 /* Alloc dma memory for BDQ page buffer list */
2942 qedf->bdq_pbl_mem_size =
2943 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2944 qedf->bdq_pbl_mem_size =
2945 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2946
2947 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2948 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2949 if (!qedf->bdq_pbl) {
2950 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2951 return -ENOMEM;
2952 }
2953
2954 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2955 "BDQ PBL addr=0x%p dma=%pad\n",
2956 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2957
2958 /*
2959 * Populate BDQ PBL with physical and virtual address of individual
2960 * BDQ buffers
2961 */
2962 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2963 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2964 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2965 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2966 pbl->opaque.fcoe_opaque.hi = 0;
2967 /* Opaque lo data is an index into the BDQ array */
2968 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
2969 pbl++;
2970 }
2971
2972 /* Allocate list of PBL pages */
2973 qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev,
2974 QEDF_PAGE_SIZE,
2975 &qedf->bdq_pbl_list_dma,
2976 GFP_KERNEL);
2977 if (!qedf->bdq_pbl_list) {
2978 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2979 return -ENOMEM;
2980 }
2981
2982 /*
2983 * Now populate PBL list with pages that contain pointers to the
2984 * individual buffers.
2985 */
2986 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2987 QEDF_PAGE_SIZE;
2988 list = (u64 *)qedf->bdq_pbl_list;
2989 page = qedf->bdq_pbl_list_dma;
2990 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2991 *list = qedf->bdq_pbl_dma;
2992 list++;
2993 page += QEDF_PAGE_SIZE;
2994 }
2995
2996 return 0;
2997 }
2998
2999 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
3000 {
3001 u32 *list;
3002 int i;
3003 int status = 0, rc;
3004 u32 *pbl;
3005 dma_addr_t page;
3006 int num_pages;
3007
3008 /* Allocate and map CQs, RQs */
3009 /*
3010 * Number of global queues (CQ / RQ). This should
3011 * be <= number of available MSIX vectors for the PF
3012 */
3013 if (!qedf->num_queues) {
3014 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
3015 return 1;
3016 }
3017
3018 /*
3019 * Make sure we allocated the PBL that will contain the physical
3020 * addresses of our queues
3021 */
3022 if (!qedf->p_cpuq) {
3023 status = 1;
3024 QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n");
3025 goto mem_alloc_failure;
3026 }
3027
3028 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
3029 * qedf->num_queues), GFP_KERNEL);
3030 if (!qedf->global_queues) {
3031 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
3032 "queues array ptr memory\n");
3033 return -ENOMEM;
3034 }
3035 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3036 "qedf->global_queues=%p.\n", qedf->global_queues);
3037
3038 /* Allocate DMA coherent buffers for BDQ */
3039 rc = qedf_alloc_bdq(qedf);
3040 if (rc) {
3041 QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n");
3042 goto mem_alloc_failure;
3043 }
3044
3045 /* Allocate a CQ and an associated PBL for each MSI-X vector */
3046 for (i = 0; i < qedf->num_queues; i++) {
3047 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
3048 GFP_KERNEL);
3049 if (!qedf->global_queues[i]) {
3050 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
3051 "global queue %d.\n", i);
3052 status = -ENOMEM;
3053 goto mem_alloc_failure;
3054 }
3055
3056 qedf->global_queues[i]->cq_mem_size =
3057 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3058 qedf->global_queues[i]->cq_mem_size =
3059 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
3060
3061 qedf->global_queues[i]->cq_pbl_size =
3062 (qedf->global_queues[i]->cq_mem_size /
3063 PAGE_SIZE) * sizeof(void *);
3064 qedf->global_queues[i]->cq_pbl_size =
3065 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
3066
3067 qedf->global_queues[i]->cq =
3068 dma_alloc_coherent(&qedf->pdev->dev,
3069 qedf->global_queues[i]->cq_mem_size,
3070 &qedf->global_queues[i]->cq_dma,
3071 GFP_KERNEL);
3072
3073 if (!qedf->global_queues[i]->cq) {
3074 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
3075 status = -ENOMEM;
3076 goto mem_alloc_failure;
3077 }
3078
3079 qedf->global_queues[i]->cq_pbl =
3080 dma_alloc_coherent(&qedf->pdev->dev,
3081 qedf->global_queues[i]->cq_pbl_size,
3082 &qedf->global_queues[i]->cq_pbl_dma,
3083 GFP_KERNEL);
3084
3085 if (!qedf->global_queues[i]->cq_pbl) {
3086 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
3087 status = -ENOMEM;
3088 goto mem_alloc_failure;
3089 }
3090
3091 /* Create PBL */
3092 num_pages = qedf->global_queues[i]->cq_mem_size /
3093 QEDF_PAGE_SIZE;
3094 page = qedf->global_queues[i]->cq_dma;
3095 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
3096
3097 while (num_pages--) {
3098 *pbl = U64_LO(page);
3099 pbl++;
3100 *pbl = U64_HI(page);
3101 pbl++;
3102 page += QEDF_PAGE_SIZE;
3103 }
3104 /* Set the initial consumer index for cq */
3105 qedf->global_queues[i]->cq_cons_idx = 0;
3106 }
3107
3108 list = (u32 *)qedf->p_cpuq;
3109
3110 /*
3111 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
3112 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
3113 * to the physical address which contains an array of pointers to
3114 * the physical addresses of the specific queue pages.
3115 */
3116 for (i = 0; i < qedf->num_queues; i++) {
3117 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
3118 list++;
3119 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
3120 list++;
3121 *list = U64_LO(0);
3122 list++;
3123 *list = U64_HI(0);
3124 list++;
3125 }
3126
3127 return 0;
3128
3129 mem_alloc_failure:
3130 qedf_free_global_queues(qedf);
3131 return status;
3132 }
3133
3134 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
3135 {
3136 u8 sq_num_pbl_pages;
3137 u32 sq_mem_size;
3138 u32 cq_mem_size;
3139 u32 cq_num_entries;
3140 int rval;
3141
3142 /*
3143 * The number of completion queues/fastpath interrupts/status blocks
3144 * we allocation is the minimum off:
3145 *
3146 * Number of CPUs
3147 * Number allocated by qed for our PCI function
3148 */
3149 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
3150
3151 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
3152 qedf->num_queues);
3153
3154 qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev,
3155 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
3156 &qedf->hw_p_cpuq, GFP_KERNEL);
3157
3158 if (!qedf->p_cpuq) {
3159 QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n");
3160 return 1;
3161 }
3162
3163 rval = qedf_alloc_global_queues(qedf);
3164 if (rval) {
3165 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
3166 "failed.\n");
3167 return 1;
3168 }
3169
3170 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
3171 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
3172 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
3173 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
3174
3175 /* Calculate CQ num entries */
3176 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
3177 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
3178 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
3179
3180 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
3181
3182 /* Setup the value for fcoe PF */
3183 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
3184 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
3185 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
3186 (u64)qedf->hw_p_cpuq;
3187 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
3188
3189 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
3190
3191 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
3192 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
3193
3194 /* log_page_size: 12 for 4KB pages */
3195 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
3196
3197 qedf->pf_params.fcoe_pf_params.mtu = 9000;
3198 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
3199 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
3200
3201 /* BDQ address and size */
3202 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
3203 qedf->bdq_pbl_list_dma;
3204 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
3205 qedf->bdq_pbl_list_num_entries;
3206 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
3207
3208 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3209 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
3210 qedf->bdq_pbl_list,
3211 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
3212 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
3213
3214 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3215 "cq_num_entries=%d.\n",
3216 qedf->pf_params.fcoe_pf_params.cq_num_entries);
3217
3218 return 0;
3219 }
3220
3221 /* Free DMA coherent memory for array of queue pointers we pass to qed */
3222 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
3223 {
3224 size_t size = 0;
3225
3226 if (qedf->p_cpuq) {
3227 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
3228 dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq,
3229 qedf->hw_p_cpuq);
3230 }
3231
3232 qedf_free_global_queues(qedf);
3233
3234 kfree(qedf->global_queues);
3235 }
3236
3237 /*
3238 * PCI driver functions
3239 */
3240
3241 static const struct pci_device_id qedf_pci_tbl[] = {
3242 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
3243 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
3244 {0}
3245 };
3246 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
3247
3248 static struct pci_driver qedf_pci_driver = {
3249 .name = QEDF_MODULE_NAME,
3250 .id_table = qedf_pci_tbl,
3251 .probe = qedf_probe,
3252 .remove = qedf_remove,
3253 .shutdown = qedf_shutdown,
3254 };
3255
3256 static int __qedf_probe(struct pci_dev *pdev, int mode)
3257 {
3258 int rc = -EINVAL;
3259 struct fc_lport *lport;
3260 struct qedf_ctx *qedf = NULL;
3261 struct Scsi_Host *host;
3262 bool is_vf = false;
3263 struct qed_ll2_params params;
3264 char host_buf[20];
3265 struct qed_link_params link_params;
3266 int status;
3267 void *task_start, *task_end;
3268 struct qed_slowpath_params slowpath_params;
3269 struct qed_probe_params qed_params;
3270 u16 retry_cnt = 10;
3271
3272 /*
3273 * When doing error recovery we didn't reap the lport so don't try
3274 * to reallocate it.
3275 */
3276 retry_probe:
3277 if (mode == QEDF_MODE_RECOVERY)
3278 msleep(2000);
3279
3280 if (mode != QEDF_MODE_RECOVERY) {
3281 lport = libfc_host_alloc(&qedf_host_template,
3282 sizeof(struct qedf_ctx));
3283
3284 if (!lport) {
3285 QEDF_ERR(NULL, "Could not allocate lport.\n");
3286 rc = -ENOMEM;
3287 goto err0;
3288 }
3289
3290 fc_disc_init(lport);
3291
3292 /* Initialize qedf_ctx */
3293 qedf = lport_priv(lport);
3294 set_bit(QEDF_PROBING, &qedf->flags);
3295 qedf->lport = lport;
3296 qedf->ctlr.lp = lport;
3297 qedf->pdev = pdev;
3298 qedf->dbg_ctx.pdev = pdev;
3299 qedf->dbg_ctx.host_no = lport->host->host_no;
3300 spin_lock_init(&qedf->hba_lock);
3301 INIT_LIST_HEAD(&qedf->fcports);
3302 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
3303 atomic_set(&qedf->num_offloads, 0);
3304 qedf->stop_io_on_error = false;
3305 pci_set_drvdata(pdev, qedf);
3306 init_completion(&qedf->fipvlan_compl);
3307 mutex_init(&qedf->stats_mutex);
3308 mutex_init(&qedf->flush_mutex);
3309 qedf->flogi_pending = 0;
3310
3311 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
3312 "QLogic FastLinQ FCoE Module qedf %s, "
3313 "FW %d.%d.%d.%d\n", QEDF_VERSION,
3314 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
3315 FW_ENGINEERING_VERSION);
3316 } else {
3317 /* Init pointers during recovery */
3318 qedf = pci_get_drvdata(pdev);
3319 set_bit(QEDF_PROBING, &qedf->flags);
3320 lport = qedf->lport;
3321 }
3322
3323 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n");
3324
3325 host = lport->host;
3326
3327 /* Allocate mempool for qedf_io_work structs */
3328 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
3329 qedf_io_work_cache);
3330 if (qedf->io_mempool == NULL) {
3331 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
3332 goto err1;
3333 }
3334 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
3335 qedf->io_mempool);
3336
3337 sprintf(host_buf, "qedf_%u_link",
3338 qedf->lport->host->host_no);
3339 qedf->link_update_wq = create_workqueue(host_buf);
3340 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
3341 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
3342 INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump);
3343 INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work);
3344 qedf->fipvlan_retries = qedf_fipvlan_retries;
3345 /* Set a default prio in case DCBX doesn't converge */
3346 if (qedf_default_prio > -1) {
3347 /*
3348 * This is the case where we pass a modparam in so we want to
3349 * honor it even if dcbx doesn't converge.
3350 */
3351 qedf->prio = qedf_default_prio;
3352 } else
3353 qedf->prio = QEDF_DEFAULT_PRIO;
3354
3355 /*
3356 * Common probe. Takes care of basic hardware init and pci_*
3357 * functions.
3358 */
3359 memset(&qed_params, 0, sizeof(qed_params));
3360 qed_params.protocol = QED_PROTOCOL_FCOE;
3361 qed_params.dp_module = qedf_dp_module;
3362 qed_params.dp_level = qedf_dp_level;
3363 qed_params.is_vf = is_vf;
3364 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3365 if (!qedf->cdev) {
3366 if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) {
3367 QEDF_ERR(&qedf->dbg_ctx,
3368 "Retry %d initialize hardware\n", retry_cnt);
3369 retry_cnt--;
3370 goto retry_probe;
3371 }
3372 QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n");
3373 rc = -ENODEV;
3374 goto err1;
3375 }
3376
3377 /* Learn information crucial for qedf to progress */
3378 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3379 if (rc) {
3380 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3381 goto err1;
3382 }
3383
3384 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC,
3385 "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
3386 qedf->dev_info.common.num_hwfns,
3387 qed_ops->common->get_affin_hwfn_idx(qedf->cdev));
3388
3389 /* queue allocation code should come here
3390 * order should be
3391 * slowpath_start
3392 * status block allocation
3393 * interrupt registration (to get min number of queues)
3394 * set_fcoe_pf_param
3395 * qed_sp_fcoe_func_start
3396 */
3397 rc = qedf_set_fcoe_pf_param(qedf);
3398 if (rc) {
3399 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3400 goto err2;
3401 }
3402 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3403
3404 /* Learn information crucial for qedf to progress */
3405 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3406 if (rc) {
3407 QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n");
3408 goto err2;
3409 }
3410
3411 /* Record BDQ producer doorbell addresses */
3412 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3413 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3414 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3415 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3416 qedf->bdq_secondary_prod);
3417
3418 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3419
3420 rc = qedf_prepare_sb(qedf);
3421 if (rc) {
3422
3423 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3424 goto err2;
3425 }
3426
3427 /* Start the Slowpath-process */
3428 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3429 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3430 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3431 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3432 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3433 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3434 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3435 if (rc) {
3436 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3437 goto err2;
3438 }
3439
3440 /*
3441 * update_pf_params needs to be called before and after slowpath
3442 * start
3443 */
3444 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3445
3446 /* Setup interrupts */
3447 rc = qedf_setup_int(qedf);
3448 if (rc) {
3449 QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n");
3450 goto err3;
3451 }
3452
3453 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3454 if (rc) {
3455 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3456 goto err4;
3457 }
3458 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3459 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3460 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3461 "end=%p block_size=%u.\n", task_start, task_end,
3462 qedf->tasks.size);
3463
3464 /*
3465 * We need to write the number of BDs in the BDQ we've preallocated so
3466 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3467 * packet arrives.
3468 */
3469 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3470 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3471 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3472 qedf->bdq_prod_idx);
3473 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3474 readw(qedf->bdq_primary_prod);
3475 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3476 readw(qedf->bdq_secondary_prod);
3477
3478 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3479
3480 /* Now that the dev_info struct has been filled in set the MAC
3481 * address
3482 */
3483 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3484 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3485 qedf->mac);
3486
3487 /*
3488 * Set the WWNN and WWPN in the following way:
3489 *
3490 * If the info we get from qed is non-zero then use that to set the
3491 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3492 * on the MAC address.
3493 */
3494 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3495 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3496 "Setting WWPN and WWNN from qed dev_info.\n");
3497 qedf->wwnn = qedf->dev_info.wwnn;
3498 qedf->wwpn = qedf->dev_info.wwpn;
3499 } else {
3500 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3501 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3502 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3503 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3504 }
3505 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3506 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3507
3508 sprintf(host_buf, "host_%d", host->host_no);
3509 qed_ops->common->set_name(qedf->cdev, host_buf);
3510
3511 /* Allocate cmd mgr */
3512 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3513 if (!qedf->cmd_mgr) {
3514 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3515 rc = -ENOMEM;
3516 goto err5;
3517 }
3518
3519 if (mode != QEDF_MODE_RECOVERY) {
3520 host->transportt = qedf_fc_transport_template;
3521 host->max_lun = qedf_max_lun;
3522 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3523 host->can_queue = FCOE_PARAMS_NUM_TASKS;
3524 rc = scsi_add_host(host, &pdev->dev);
3525 if (rc) {
3526 QEDF_WARN(&qedf->dbg_ctx,
3527 "Error adding Scsi_Host rc=0x%x.\n", rc);
3528 goto err6;
3529 }
3530 }
3531
3532 memset(&params, 0, sizeof(params));
3533 params.mtu = QEDF_LL2_BUF_SIZE;
3534 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3535
3536 /* Start LL2 processing thread */
3537 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3538 qedf->ll2_recv_wq =
3539 create_workqueue(host_buf);
3540 if (!qedf->ll2_recv_wq) {
3541 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3542 rc = -ENOMEM;
3543 goto err7;
3544 }
3545
3546 #ifdef CONFIG_DEBUG_FS
3547 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3548 qedf_dbg_fops);
3549 #endif
3550
3551 /* Start LL2 */
3552 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3553 rc = qed_ops->ll2->start(qedf->cdev, &params);
3554 if (rc) {
3555 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3556 goto err7;
3557 }
3558 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3559
3560 /* Set initial FIP/FCoE VLAN to NULL */
3561 qedf->vlan_id = 0;
3562
3563 /*
3564 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3565 * they were not reaped during the unload process.
3566 */
3567 if (mode != QEDF_MODE_RECOVERY) {
3568 /* Setup imbedded fcoe controller */
3569 qedf_fcoe_ctlr_setup(qedf);
3570
3571 /* Setup lport */
3572 rc = qedf_lport_setup(qedf);
3573 if (rc) {
3574 QEDF_ERR(&(qedf->dbg_ctx),
3575 "qedf_lport_setup failed.\n");
3576 goto err7;
3577 }
3578 }
3579
3580 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3581 qedf->timer_work_queue =
3582 create_workqueue(host_buf);
3583 if (!qedf->timer_work_queue) {
3584 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3585 "workqueue.\n");
3586 rc = -ENOMEM;
3587 goto err7;
3588 }
3589
3590 /* DPC workqueue is not reaped during recovery unload */
3591 if (mode != QEDF_MODE_RECOVERY) {
3592 sprintf(host_buf, "qedf_%u_dpc",
3593 qedf->lport->host->host_no);
3594 qedf->dpc_wq = create_workqueue(host_buf);
3595 }
3596 INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler);
3597
3598 /*
3599 * GRC dump and sysfs parameters are not reaped during the recovery
3600 * unload process.
3601 */
3602 if (mode != QEDF_MODE_RECOVERY) {
3603 qedf->grcdump_size =
3604 qed_ops->common->dbg_all_data_size(qedf->cdev);
3605 if (qedf->grcdump_size) {
3606 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3607 qedf->grcdump_size);
3608 if (rc) {
3609 QEDF_ERR(&(qedf->dbg_ctx),
3610 "GRC Dump buffer alloc failed.\n");
3611 qedf->grcdump = NULL;
3612 }
3613
3614 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3615 "grcdump: addr=%p, size=%u.\n",
3616 qedf->grcdump, qedf->grcdump_size);
3617 }
3618 qedf_create_sysfs_ctx_attr(qedf);
3619
3620 /* Initialize I/O tracing for this adapter */
3621 spin_lock_init(&qedf->io_trace_lock);
3622 qedf->io_trace_idx = 0;
3623 }
3624
3625 init_completion(&qedf->flogi_compl);
3626
3627 status = qed_ops->common->update_drv_state(qedf->cdev, true);
3628 if (status)
3629 QEDF_ERR(&(qedf->dbg_ctx),
3630 "Failed to send drv state to MFW.\n");
3631
3632 memset(&link_params, 0, sizeof(struct qed_link_params));
3633 link_params.link_up = true;
3634 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3635 if (status)
3636 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3637
3638 /* Start/restart discovery */
3639 if (mode == QEDF_MODE_RECOVERY)
3640 fcoe_ctlr_link_up(&qedf->ctlr);
3641 else
3642 fc_fabric_login(lport);
3643
3644 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3645
3646 clear_bit(QEDF_PROBING, &qedf->flags);
3647
3648 /* All good */
3649 return 0;
3650
3651 err7:
3652 if (qedf->ll2_recv_wq)
3653 destroy_workqueue(qedf->ll2_recv_wq);
3654 fc_remove_host(qedf->lport->host);
3655 scsi_remove_host(qedf->lport->host);
3656 #ifdef CONFIG_DEBUG_FS
3657 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3658 #endif
3659 err6:
3660 qedf_cmd_mgr_free(qedf->cmd_mgr);
3661 err5:
3662 qed_ops->stop(qedf->cdev);
3663 err4:
3664 qedf_free_fcoe_pf_param(qedf);
3665 qedf_sync_free_irqs(qedf);
3666 err3:
3667 qed_ops->common->slowpath_stop(qedf->cdev);
3668 err2:
3669 qed_ops->common->remove(qedf->cdev);
3670 err1:
3671 scsi_host_put(lport->host);
3672 err0:
3673 if (qedf) {
3674 QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n");
3675
3676 clear_bit(QEDF_PROBING, &qedf->flags);
3677 }
3678 return rc;
3679 }
3680
3681 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3682 {
3683 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3684 }
3685
3686 static void __qedf_remove(struct pci_dev *pdev, int mode)
3687 {
3688 struct qedf_ctx *qedf;
3689 int rc;
3690
3691 if (!pdev) {
3692 QEDF_ERR(NULL, "pdev is NULL.\n");
3693 return;
3694 }
3695
3696 qedf = pci_get_drvdata(pdev);
3697
3698 /*
3699 * Prevent race where we're in board disable work and then try to
3700 * rmmod the module.
3701 */
3702 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3703 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3704 return;
3705 }
3706
3707 if (mode != QEDF_MODE_RECOVERY)
3708 set_bit(QEDF_UNLOADING, &qedf->flags);
3709
3710 /* Logoff the fabric to upload all connections */
3711 if (mode == QEDF_MODE_RECOVERY)
3712 fcoe_ctlr_link_down(&qedf->ctlr);
3713 else
3714 fc_fabric_logoff(qedf->lport);
3715
3716 if (qedf_wait_for_upload(qedf) == false)
3717 QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n");
3718
3719 #ifdef CONFIG_DEBUG_FS
3720 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3721 #endif
3722
3723 /* Stop any link update handling */
3724 cancel_delayed_work_sync(&qedf->link_update);
3725 destroy_workqueue(qedf->link_update_wq);
3726 qedf->link_update_wq = NULL;
3727
3728 if (qedf->timer_work_queue)
3729 destroy_workqueue(qedf->timer_work_queue);
3730
3731 /* Stop Light L2 */
3732 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3733 qed_ops->ll2->stop(qedf->cdev);
3734 if (qedf->ll2_recv_wq)
3735 destroy_workqueue(qedf->ll2_recv_wq);
3736
3737 /* Stop fastpath */
3738 qedf_sync_free_irqs(qedf);
3739 qedf_destroy_sb(qedf);
3740
3741 /*
3742 * During recovery don't destroy OS constructs that represent the
3743 * physical port.
3744 */
3745 if (mode != QEDF_MODE_RECOVERY) {
3746 qedf_free_grc_dump_buf(&qedf->grcdump);
3747 qedf_remove_sysfs_ctx_attr(qedf);
3748
3749 /* Remove all SCSI/libfc/libfcoe structures */
3750 fcoe_ctlr_destroy(&qedf->ctlr);
3751 fc_lport_destroy(qedf->lport);
3752 fc_remove_host(qedf->lport->host);
3753 scsi_remove_host(qedf->lport->host);
3754 }
3755
3756 qedf_cmd_mgr_free(qedf->cmd_mgr);
3757
3758 if (mode != QEDF_MODE_RECOVERY) {
3759 fc_exch_mgr_free(qedf->lport);
3760 fc_lport_free_stats(qedf->lport);
3761
3762 /* Wait for all vports to be reaped */
3763 qedf_wait_for_vport_destroy(qedf);
3764 }
3765
3766 /*
3767 * Now that all connections have been uploaded we can stop the
3768 * rest of the qed operations
3769 */
3770 qed_ops->stop(qedf->cdev);
3771
3772 if (mode != QEDF_MODE_RECOVERY) {
3773 if (qedf->dpc_wq) {
3774 /* Stop general DPC handling */
3775 destroy_workqueue(qedf->dpc_wq);
3776 qedf->dpc_wq = NULL;
3777 }
3778 }
3779
3780 /* Final shutdown for the board */
3781 qedf_free_fcoe_pf_param(qedf);
3782 if (mode != QEDF_MODE_RECOVERY) {
3783 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3784 pci_set_drvdata(pdev, NULL);
3785 }
3786
3787 rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3788 if (rc)
3789 QEDF_ERR(&(qedf->dbg_ctx),
3790 "Failed to send drv state to MFW.\n");
3791
3792 qed_ops->common->slowpath_stop(qedf->cdev);
3793 qed_ops->common->remove(qedf->cdev);
3794
3795 mempool_destroy(qedf->io_mempool);
3796
3797 /* Only reap the Scsi_host on a real removal */
3798 if (mode != QEDF_MODE_RECOVERY)
3799 scsi_host_put(qedf->lport->host);
3800 }
3801
3802 static void qedf_remove(struct pci_dev *pdev)
3803 {
3804 /* Check to make sure this function wasn't already disabled */
3805 if (!atomic_read(&pdev->enable_cnt))
3806 return;
3807
3808 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3809 }
3810
3811 void qedf_wq_grcdump(struct work_struct *work)
3812 {
3813 struct qedf_ctx *qedf =
3814 container_of(work, struct qedf_ctx, grcdump_work.work);
3815
3816 QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n");
3817 qedf_capture_grc_dump(qedf);
3818 }
3819
3820 void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type)
3821 {
3822 struct qedf_ctx *qedf = dev;
3823
3824 QEDF_ERR(&(qedf->dbg_ctx),
3825 "Hardware error handler scheduled, event=%d.\n",
3826 err_type);
3827
3828 if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) {
3829 QEDF_ERR(&(qedf->dbg_ctx),
3830 "Already in recovery, not scheduling board disable work.\n");
3831 return;
3832 }
3833
3834 switch (err_type) {
3835 case QED_HW_ERR_FAN_FAIL:
3836 schedule_delayed_work(&qedf->board_disable_work, 0);
3837 break;
3838 case QED_HW_ERR_MFW_RESP_FAIL:
3839 case QED_HW_ERR_HW_ATTN:
3840 case QED_HW_ERR_DMAE_FAIL:
3841 case QED_HW_ERR_FW_ASSERT:
3842 /* Prevent HW attentions from being reasserted */
3843 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3844 break;
3845 case QED_HW_ERR_RAMROD_FAIL:
3846 /* Prevent HW attentions from being reasserted */
3847 qed_ops->common->attn_clr_enable(qedf->cdev, true);
3848
3849 if (qedf_enable_recovery)
3850 qed_ops->common->recovery_process(qedf->cdev);
3851
3852 break;
3853 default:
3854 break;
3855 }
3856 }
3857
3858 /*
3859 * Protocol TLV handler
3860 */
3861 void qedf_get_protocol_tlv_data(void *dev, void *data)
3862 {
3863 struct qedf_ctx *qedf = dev;
3864 struct qed_mfw_tlv_fcoe *fcoe = data;
3865 struct fc_lport *lport;
3866 struct Scsi_Host *host;
3867 struct fc_host_attrs *fc_host;
3868 struct fc_host_statistics *hst;
3869
3870 if (!qedf) {
3871 QEDF_ERR(NULL, "qedf is null.\n");
3872 return;
3873 }
3874
3875 if (test_bit(QEDF_PROBING, &qedf->flags)) {
3876 QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n");
3877 return;
3878 }
3879
3880 lport = qedf->lport;
3881 host = lport->host;
3882 fc_host = shost_to_fc_host(host);
3883
3884 /* Force a refresh of the fc_host stats including offload stats */
3885 hst = qedf_fc_get_host_stats(host);
3886
3887 fcoe->qos_pri_set = true;
3888 fcoe->qos_pri = 3; /* Hard coded to 3 in driver */
3889
3890 fcoe->ra_tov_set = true;
3891 fcoe->ra_tov = lport->r_a_tov;
3892
3893 fcoe->ed_tov_set = true;
3894 fcoe->ed_tov = lport->e_d_tov;
3895
3896 fcoe->npiv_state_set = true;
3897 fcoe->npiv_state = 1; /* NPIV always enabled */
3898
3899 fcoe->num_npiv_ids_set = true;
3900 fcoe->num_npiv_ids = fc_host->npiv_vports_inuse;
3901
3902 /* Certain attributes we only want to set if we've selected an FCF */
3903 if (qedf->ctlr.sel_fcf) {
3904 fcoe->switch_name_set = true;
3905 u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name);
3906 }
3907
3908 fcoe->port_state_set = true;
3909 /* For qedf we're either link down or fabric attach */
3910 if (lport->link_up)
3911 fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC;
3912 else
3913 fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE;
3914
3915 fcoe->link_failures_set = true;
3916 fcoe->link_failures = (u16)hst->link_failure_count;
3917
3918 fcoe->fcoe_txq_depth_set = true;
3919 fcoe->fcoe_rxq_depth_set = true;
3920 fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS;
3921 fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS;
3922
3923 fcoe->fcoe_rx_frames_set = true;
3924 fcoe->fcoe_rx_frames = hst->rx_frames;
3925
3926 fcoe->fcoe_tx_frames_set = true;
3927 fcoe->fcoe_tx_frames = hst->tx_frames;
3928
3929 fcoe->fcoe_rx_bytes_set = true;
3930 fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000;
3931
3932 fcoe->fcoe_tx_bytes_set = true;
3933 fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000;
3934
3935 fcoe->crc_count_set = true;
3936 fcoe->crc_count = hst->invalid_crc_count;
3937
3938 fcoe->tx_abts_set = true;
3939 fcoe->tx_abts = hst->fcp_packet_aborts;
3940
3941 fcoe->tx_lun_rst_set = true;
3942 fcoe->tx_lun_rst = qedf->lun_resets;
3943
3944 fcoe->abort_task_sets_set = true;
3945 fcoe->abort_task_sets = qedf->packet_aborts;
3946
3947 fcoe->scsi_busy_set = true;
3948 fcoe->scsi_busy = qedf->busy;
3949
3950 fcoe->scsi_tsk_full_set = true;
3951 fcoe->scsi_tsk_full = qedf->task_set_fulls;
3952 }
3953
3954 /* Deferred work function to perform soft context reset on STAG change */
3955 void qedf_stag_change_work(struct work_struct *work)
3956 {
3957 struct qedf_ctx *qedf =
3958 container_of(work, struct qedf_ctx, stag_work.work);
3959
3960 if (!qedf) {
3961 QEDF_ERR(NULL, "qedf is NULL");
3962 return;
3963 }
3964 QEDF_ERR(&qedf->dbg_ctx, "Performing software context reset.\n");
3965 qedf_ctx_soft_reset(qedf->lport);
3966 }
3967
3968 static void qedf_shutdown(struct pci_dev *pdev)
3969 {
3970 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3971 }
3972
3973 /*
3974 * Recovery handler code
3975 */
3976 static void qedf_schedule_recovery_handler(void *dev)
3977 {
3978 struct qedf_ctx *qedf = dev;
3979
3980 QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n");
3981 schedule_delayed_work(&qedf->recovery_work, 0);
3982 }
3983
3984 static void qedf_recovery_handler(struct work_struct *work)
3985 {
3986 struct qedf_ctx *qedf =
3987 container_of(work, struct qedf_ctx, recovery_work.work);
3988
3989 if (test_and_set_bit(QEDF_IN_RECOVERY, &qedf->flags))
3990 return;
3991
3992 /*
3993 * Call common_ops->recovery_prolog to allow the MFW to quiesce
3994 * any PCI transactions.
3995 */
3996 qed_ops->common->recovery_prolog(qedf->cdev);
3997
3998 QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n");
3999 __qedf_remove(qedf->pdev, QEDF_MODE_RECOVERY);
4000 /*
4001 * Reset link and dcbx to down state since we will not get a link down
4002 * event from the MFW but calling __qedf_remove will essentially be a
4003 * link down event.
4004 */
4005 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
4006 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
4007 __qedf_probe(qedf->pdev, QEDF_MODE_RECOVERY);
4008 clear_bit(QEDF_IN_RECOVERY, &qedf->flags);
4009 QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n");
4010 }
4011
4012 /* Generic TLV data callback */
4013 void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
4014 {
4015 struct qedf_ctx *qedf;
4016
4017 if (!dev) {
4018 QEDF_INFO(NULL, QEDF_LOG_EVT,
4019 "dev is NULL so ignoring get_generic_tlv_data request.\n");
4020 return;
4021 }
4022 qedf = (struct qedf_ctx *)dev;
4023
4024 memset(data, 0, sizeof(struct qed_generic_tlvs));
4025 ether_addr_copy(data->mac[0], qedf->mac);
4026 }
4027
4028 /*
4029 * Module Init/Remove
4030 */
4031
4032 static int __init qedf_init(void)
4033 {
4034 int ret;
4035
4036 /* If debug=1 passed, set the default log mask */
4037 if (qedf_debug == QEDF_LOG_DEFAULT)
4038 qedf_debug = QEDF_DEFAULT_LOG_MASK;
4039
4040 /*
4041 * Check that default prio for FIP/FCoE traffic is between 0..7 if a
4042 * value has been set
4043 */
4044 if (qedf_default_prio > -1)
4045 if (qedf_default_prio > 7) {
4046 qedf_default_prio = QEDF_DEFAULT_PRIO;
4047 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
4048 QEDF_DEFAULT_PRIO);
4049 }
4050
4051 /* Print driver banner */
4052 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
4053 QEDF_VERSION);
4054
4055 /* Create kmem_cache for qedf_io_work structs */
4056 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
4057 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
4058 if (qedf_io_work_cache == NULL) {
4059 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
4060 goto err1;
4061 }
4062 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
4063 qedf_io_work_cache);
4064
4065 qed_ops = qed_get_fcoe_ops();
4066 if (!qed_ops) {
4067 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
4068 goto err1;
4069 }
4070
4071 #ifdef CONFIG_DEBUG_FS
4072 qedf_dbg_init("qedf");
4073 #endif
4074
4075 qedf_fc_transport_template =
4076 fc_attach_transport(&qedf_fc_transport_fn);
4077 if (!qedf_fc_transport_template) {
4078 QEDF_ERR(NULL, "Could not register with FC transport\n");
4079 goto err2;
4080 }
4081
4082 qedf_fc_vport_transport_template =
4083 fc_attach_transport(&qedf_fc_vport_transport_fn);
4084 if (!qedf_fc_vport_transport_template) {
4085 QEDF_ERR(NULL, "Could not register vport template with FC "
4086 "transport\n");
4087 goto err3;
4088 }
4089
4090 qedf_io_wq = create_workqueue("qedf_io_wq");
4091 if (!qedf_io_wq) {
4092 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
4093 goto err4;
4094 }
4095
4096 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
4097
4098 ret = pci_register_driver(&qedf_pci_driver);
4099 if (ret) {
4100 QEDF_ERR(NULL, "Failed to register driver\n");
4101 goto err5;
4102 }
4103
4104 return 0;
4105
4106 err5:
4107 destroy_workqueue(qedf_io_wq);
4108 err4:
4109 fc_release_transport(qedf_fc_vport_transport_template);
4110 err3:
4111 fc_release_transport(qedf_fc_transport_template);
4112 err2:
4113 #ifdef CONFIG_DEBUG_FS
4114 qedf_dbg_exit();
4115 #endif
4116 qed_put_fcoe_ops();
4117 err1:
4118 return -EINVAL;
4119 }
4120
4121 static void __exit qedf_cleanup(void)
4122 {
4123 pci_unregister_driver(&qedf_pci_driver);
4124
4125 destroy_workqueue(qedf_io_wq);
4126
4127 fc_release_transport(qedf_fc_vport_transport_template);
4128 fc_release_transport(qedf_fc_transport_template);
4129 #ifdef CONFIG_DEBUG_FS
4130 qedf_dbg_exit();
4131 #endif
4132 qed_put_fcoe_ops();
4133
4134 kmem_cache_destroy(qedf_io_work_cache);
4135 }
4136
4137 MODULE_LICENSE("GPL");
4138 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module");
4139 MODULE_AUTHOR("QLogic Corporation");
4140 MODULE_VERSION(QEDF_VERSION);
4141 module_init(qedf_init);
4142 module_exit(qedf_cleanup);
Linux with added FPC-III support