1 /*
2 * QLogic FCoE Offload Driver
3 * Copyright (c) 2016-2017 Cavium Inc.
4 *
5 * This software is available under the terms of the GNU General Public License
6 * (GPL) Version 2, available from the file COPYING in the main directory of
7 * this source tree.
8 */
9 #include <linux/init.h>
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/device.h>
14 #include <linux/highmem.h>
15 #include <linux/crc32.h>
16 #include <linux/interrupt.h>
17 #include <linux/list.h>
18 #include <linux/kthread.h>
19 #include <scsi/libfc.h>
20 #include <scsi/scsi_host.h>
21 #include <scsi/fc_frame.h>
22 #include <linux/if_ether.h>
23 #include <linux/if_vlan.h>
24 #include <linux/cpu.h>
25 #include "qedf.h"
26 #include <uapi/linux/pci_regs.h>
27
28 const struct qed_fcoe_ops *qed_ops;
29
30 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
31 static void qedf_remove(struct pci_dev *pdev);
32
33 extern struct qedf_debugfs_ops qedf_debugfs_ops;
34 extern struct file_operations qedf_dbg_fops;
35
36 /*
37 * Driver module parameters.
38 */
39 static unsigned int qedf_dev_loss_tmo = 60;
40 module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
41 MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
42 "remote ports (default 60)");
43
44 uint qedf_debug = QEDF_LOG_INFO;
45 module_param_named(debug, qedf_debug, uint, S_IRUGO);
46 MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
47 " mask");
48
49 static uint qedf_fipvlan_retries = 30;
50 module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
51 MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
52 "before giving up (default 30)");
53
54 static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
55 module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
56 MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
57 "(default 1002).");
58
59 static uint qedf_default_prio = QEDF_DEFAULT_PRIO;
60 module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
61 MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE"
62 " traffic (default 3).");
63
64 uint qedf_dump_frames;
65 module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
66 MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
67 "(default off)");
68
69 static uint qedf_queue_depth;
70 module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
71 MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
72 "by the qedf driver. Default is 0 (use OS default).");
73
74 uint qedf_io_tracing;
75 module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
76 MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
77 "into trace buffer. (default off).");
78
79 static uint qedf_max_lun = MAX_FIBRE_LUNS;
80 module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
81 MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
82 "supports. (default 0xffffffff)");
83
84 uint qedf_link_down_tmo;
85 module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
86 MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
87 "link is down by N seconds.");
88
89 bool qedf_retry_delay;
90 module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
91 MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
92 "delay handling (default off).");
93
94 static uint qedf_dp_module;
95 module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
96 MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
97 "qed module during probe.");
98
99 static uint qedf_dp_level = QED_LEVEL_NOTICE;
100 module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
101 MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
102 "during probe (0-3: 0 more verbose).");
103
104 struct workqueue_struct *qedf_io_wq;
105
106 static struct fcoe_percpu_s qedf_global;
107 static DEFINE_SPINLOCK(qedf_global_lock);
108
109 static struct kmem_cache *qedf_io_work_cache;
110
qedf_set_vlan_id(struct qedf_ctx * qedf,int vlan_id)111 void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
112 {
113 qedf->vlan_id = vlan_id;
114 qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT;
115 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
116 "prio=%d.\n", vlan_id, qedf_default_prio);
117 }
118
119 /* Returns true if we have a valid vlan, false otherwise */
qedf_initiate_fipvlan_req(struct qedf_ctx * qedf)120 static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
121 {
122 int rc;
123
124 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
125 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
126 return false;
127 }
128
129 while (qedf->fipvlan_retries--) {
130 if (qedf->vlan_id > 0)
131 return true;
132 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
133 "Retry %d.\n", qedf->fipvlan_retries);
134 init_completion(&qedf->fipvlan_compl);
135 qedf_fcoe_send_vlan_req(qedf);
136 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
137 1 * HZ);
138 if (rc > 0) {
139 fcoe_ctlr_link_up(&qedf->ctlr);
140 return true;
141 }
142 }
143
144 return false;
145 }
146
qedf_handle_link_update(struct work_struct * work)147 static void qedf_handle_link_update(struct work_struct *work)
148 {
149 struct qedf_ctx *qedf =
150 container_of(work, struct qedf_ctx, link_update.work);
151 int rc;
152
153 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
154
155 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
156 rc = qedf_initiate_fipvlan_req(qedf);
157 if (rc)
158 return;
159 /*
160 * If we get here then we never received a repsonse to our
161 * fip vlan request so set the vlan_id to the default and
162 * tell FCoE that the link is up
163 */
164 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
165 "response, falling back to default VLAN %d.\n",
166 qedf_fallback_vlan);
167 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
168
169 /*
170 * Zero out data_src_addr so we'll update it with the new
171 * lport port_id
172 */
173 eth_zero_addr(qedf->data_src_addr);
174 fcoe_ctlr_link_up(&qedf->ctlr);
175 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
176 /*
177 * If we hit here and link_down_tmo_valid is still 1 it means
178 * that link_down_tmo timed out so set it to 0 to make sure any
179 * other readers have accurate state.
180 */
181 atomic_set(&qedf->link_down_tmo_valid, 0);
182 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
183 "Calling fcoe_ctlr_link_down().\n");
184 fcoe_ctlr_link_down(&qedf->ctlr);
185 qedf_wait_for_upload(qedf);
186 /* Reset the number of FIP VLAN retries */
187 qedf->fipvlan_retries = qedf_fipvlan_retries;
188 }
189 }
190
191 #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
192 #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
193 #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
qedf_set_data_src_addr(struct qedf_ctx * qedf,struct fc_frame * fp)194 static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
195 {
196 u8 *granted_mac;
197 struct fc_frame_header *fh = fc_frame_header_get(fp);
198 u8 fc_map[3];
199 int method = 0;
200
201 /* Get granted MAC address from FIP FLOGI payload */
202 granted_mac = fr_cb(fp)->granted_mac;
203
204 /*
205 * We set the source MAC for FCoE traffic based on the Granted MAC
206 * address from the switch.
207 *
208 * If granted_mac is non-zero, we used that.
209 * If the granted_mac is zeroed out, created the FCoE MAC based on
210 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
211 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
212 * d_id of the FLOGI frame.
213 */
214 if (!is_zero_ether_addr(granted_mac)) {
215 ether_addr_copy(qedf->data_src_addr, granted_mac);
216 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
217 } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
218 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
219 qedf->data_src_addr[0] = fc_map[0];
220 qedf->data_src_addr[1] = fc_map[1];
221 qedf->data_src_addr[2] = fc_map[2];
222 qedf->data_src_addr[3] = fh->fh_d_id[0];
223 qedf->data_src_addr[4] = fh->fh_d_id[1];
224 qedf->data_src_addr[5] = fh->fh_d_id[2];
225 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
226 } else {
227 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
228 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
229 }
230
231 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
232 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
233 }
234
qedf_flogi_resp(struct fc_seq * seq,struct fc_frame * fp,void * arg)235 static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
236 void *arg)
237 {
238 struct fc_exch *exch = fc_seq_exch(seq);
239 struct fc_lport *lport = exch->lp;
240 struct qedf_ctx *qedf = lport_priv(lport);
241
242 if (!qedf) {
243 QEDF_ERR(NULL, "qedf is NULL.\n");
244 return;
245 }
246
247 /*
248 * If ERR_PTR is set then don't try to stat anything as it will cause
249 * a crash when we access fp.
250 */
251 if (IS_ERR(fp)) {
252 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
253 "fp has IS_ERR() set.\n");
254 goto skip_stat;
255 }
256
257 /* Log stats for FLOGI reject */
258 if (fc_frame_payload_op(fp) == ELS_LS_RJT)
259 qedf->flogi_failed++;
260 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
261 /* Set the source MAC we will use for FCoE traffic */
262 qedf_set_data_src_addr(qedf, fp);
263 }
264
265 /* Complete flogi_compl so we can proceed to sending ADISCs */
266 complete(&qedf->flogi_compl);
267
268 skip_stat:
269 /* Report response to libfc */
270 fc_lport_flogi_resp(seq, fp, lport);
271 }
272
qedf_elsct_send(struct fc_lport * lport,u32 did,struct fc_frame * fp,unsigned int op,void (* resp)(struct fc_seq *,struct fc_frame *,void *),void * arg,u32 timeout)273 static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
274 struct fc_frame *fp, unsigned int op,
275 void (*resp)(struct fc_seq *,
276 struct fc_frame *,
277 void *),
278 void *arg, u32 timeout)
279 {
280 struct qedf_ctx *qedf = lport_priv(lport);
281
282 /*
283 * Intercept FLOGI for statistic purposes. Note we use the resp
284 * callback to tell if this is really a flogi.
285 */
286 if (resp == fc_lport_flogi_resp) {
287 qedf->flogi_cnt++;
288 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
289 arg, timeout);
290 }
291
292 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
293 }
294
qedf_send_flogi(struct qedf_ctx * qedf)295 int qedf_send_flogi(struct qedf_ctx *qedf)
296 {
297 struct fc_lport *lport;
298 struct fc_frame *fp;
299
300 lport = qedf->lport;
301
302 if (!lport->tt.elsct_send)
303 return -EINVAL;
304
305 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
306 if (!fp) {
307 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
308 return -ENOMEM;
309 }
310
311 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
312 "Sending FLOGI to reestablish session with switch.\n");
313 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
314 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
315
316 init_completion(&qedf->flogi_compl);
317
318 return 0;
319 }
320
321 struct qedf_tmp_rdata_item {
322 struct fc_rport_priv *rdata;
323 struct list_head list;
324 };
325
326 /*
327 * This function is called if link_down_tmo is in use. If we get a link up and
328 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
329 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
330 */
qedf_link_recovery(struct work_struct * work)331 static void qedf_link_recovery(struct work_struct *work)
332 {
333 struct qedf_ctx *qedf =
334 container_of(work, struct qedf_ctx, link_recovery.work);
335 struct qedf_rport *fcport;
336 struct fc_rport_priv *rdata;
337 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
338 bool rc;
339 int retries = 30;
340 int rval, i;
341 struct list_head rdata_login_list;
342
343 INIT_LIST_HEAD(&rdata_login_list);
344
345 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
346 "Link down tmo did not expire.\n");
347
348 /*
349 * Essentially reset the fcoe_ctlr here without affecting the state
350 * of the libfc structs.
351 */
352 qedf->ctlr.state = FIP_ST_LINK_WAIT;
353 fcoe_ctlr_link_down(&qedf->ctlr);
354
355 /*
356 * Bring the link up before we send the fipvlan request so libfcoe
357 * can select a new fcf in parallel
358 */
359 fcoe_ctlr_link_up(&qedf->ctlr);
360
361 /* Since the link when down and up to verify which vlan we're on */
362 qedf->fipvlan_retries = qedf_fipvlan_retries;
363 rc = qedf_initiate_fipvlan_req(qedf);
364 /* If getting the VLAN fails, set the VLAN to the fallback one */
365 if (!rc)
366 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
367
368 /*
369 * We need to wait for an FCF to be selected due to the
370 * fcoe_ctlr_link_up other the FLOGI will be rejected.
371 */
372 while (retries > 0) {
373 if (qedf->ctlr.sel_fcf) {
374 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
375 "FCF reselected, proceeding with FLOGI.\n");
376 break;
377 }
378 msleep(500);
379 retries--;
380 }
381
382 if (retries < 1) {
383 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
384 "FCF selection.\n");
385 return;
386 }
387
388 rval = qedf_send_flogi(qedf);
389 if (rval)
390 return;
391
392 /* Wait for FLOGI completion before proceeding with sending ADISCs */
393 i = wait_for_completion_timeout(&qedf->flogi_compl,
394 qedf->lport->r_a_tov);
395 if (i == 0) {
396 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
397 return;
398 }
399
400 /*
401 * Call lport->tt.rport_login which will cause libfc to send an
402 * ADISC since the rport is in state ready.
403 */
404 rcu_read_lock();
405 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
406 rdata = fcport->rdata;
407 if (rdata == NULL)
408 continue;
409 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
410 GFP_ATOMIC);
411 if (!rdata_item)
412 continue;
413 if (kref_get_unless_zero(&rdata->kref)) {
414 rdata_item->rdata = rdata;
415 list_add(&rdata_item->list, &rdata_login_list);
416 } else
417 kfree(rdata_item);
418 }
419 rcu_read_unlock();
420 /*
421 * Do the fc_rport_login outside of the rcu lock so we don't take a
422 * mutex in an atomic context.
423 */
424 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
425 list) {
426 list_del(&rdata_item->list);
427 fc_rport_login(rdata_item->rdata);
428 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
429 kfree(rdata_item);
430 }
431 }
432
qedf_update_link_speed(struct qedf_ctx * qedf,struct qed_link_output * link)433 static void qedf_update_link_speed(struct qedf_ctx *qedf,
434 struct qed_link_output *link)
435 {
436 struct fc_lport *lport = qedf->lport;
437
438 lport->link_speed = FC_PORTSPEED_UNKNOWN;
439 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
440
441 /* Set fc_host link speed */
442 switch (link->speed) {
443 case 10000:
444 lport->link_speed = FC_PORTSPEED_10GBIT;
445 break;
446 case 25000:
447 lport->link_speed = FC_PORTSPEED_25GBIT;
448 break;
449 case 40000:
450 lport->link_speed = FC_PORTSPEED_40GBIT;
451 break;
452 case 50000:
453 lport->link_speed = FC_PORTSPEED_50GBIT;
454 break;
455 case 100000:
456 lport->link_speed = FC_PORTSPEED_100GBIT;
457 break;
458 default:
459 lport->link_speed = FC_PORTSPEED_UNKNOWN;
460 break;
461 }
462
463 /*
464 * Set supported link speed by querying the supported
465 * capabilities of the link.
466 */
467 if (link->supported_caps & SUPPORTED_10000baseKR_Full)
468 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
469 if (link->supported_caps & SUPPORTED_25000baseKR_Full)
470 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
471 if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
472 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
473 if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
474 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
475 if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
476 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
477 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
478 }
479
qedf_link_update(void * dev,struct qed_link_output * link)480 static void qedf_link_update(void *dev, struct qed_link_output *link)
481 {
482 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
483
484 if (link->link_up) {
485 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
486 link->speed / 1000);
487
488 /* Cancel any pending link down work */
489 cancel_delayed_work(&qedf->link_update);
490
491 atomic_set(&qedf->link_state, QEDF_LINK_UP);
492 qedf_update_link_speed(qedf, link);
493
494 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
495 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
496 "DCBx done.\n");
497 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
498 queue_delayed_work(qedf->link_update_wq,
499 &qedf->link_recovery, 0);
500 else
501 queue_delayed_work(qedf->link_update_wq,
502 &qedf->link_update, 0);
503 atomic_set(&qedf->link_down_tmo_valid, 0);
504 }
505
506 } else {
507 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
508
509 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
510 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
511 /*
512 * Flag that we're waiting for the link to come back up before
513 * informing the fcoe layer of the event.
514 */
515 if (qedf_link_down_tmo > 0) {
516 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
517 "Starting link down tmo.\n");
518 atomic_set(&qedf->link_down_tmo_valid, 1);
519 }
520 qedf->vlan_id = 0;
521 qedf_update_link_speed(qedf, link);
522 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
523 qedf_link_down_tmo * HZ);
524 }
525 }
526
527
qedf_dcbx_handler(void * dev,struct qed_dcbx_get * get,u32 mib_type)528 static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
529 {
530 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
531
532 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
533 "prio=%d.\n", get->operational.valid, get->operational.enabled,
534 get->operational.app_prio.fcoe);
535
536 if (get->operational.enabled && get->operational.valid) {
537 /* If DCBX was already negotiated on link up then just exit */
538 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
539 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
540 "DCBX already set on link up.\n");
541 return;
542 }
543
544 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
545
546 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
547 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
548 queue_delayed_work(qedf->link_update_wq,
549 &qedf->link_recovery, 0);
550 else
551 queue_delayed_work(qedf->link_update_wq,
552 &qedf->link_update, 0);
553 atomic_set(&qedf->link_down_tmo_valid, 0);
554 }
555 }
556
557 }
558
qedf_get_login_failures(void * cookie)559 static u32 qedf_get_login_failures(void *cookie)
560 {
561 struct qedf_ctx *qedf;
562
563 qedf = (struct qedf_ctx *)cookie;
564 return qedf->flogi_failed;
565 }
566
567 static struct qed_fcoe_cb_ops qedf_cb_ops = {
568 {
569 .link_update = qedf_link_update,
570 .dcbx_aen = qedf_dcbx_handler,
571 }
572 };
573
574 /*
575 * Various transport templates.
576 */
577
578 static struct scsi_transport_template *qedf_fc_transport_template;
579 static struct scsi_transport_template *qedf_fc_vport_transport_template;
580
581 /*
582 * SCSI EH handlers
583 */
qedf_eh_abort(struct scsi_cmnd * sc_cmd)584 static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
585 {
586 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
587 struct fc_rport_libfc_priv *rp = rport->dd_data;
588 struct qedf_rport *fcport;
589 struct fc_lport *lport;
590 struct qedf_ctx *qedf;
591 struct qedf_ioreq *io_req;
592 int rc = FAILED;
593 int rval;
594
595 if (fc_remote_port_chkready(rport)) {
596 QEDF_ERR(NULL, "rport not ready\n");
597 goto out;
598 }
599
600 lport = shost_priv(sc_cmd->device->host);
601 qedf = (struct qedf_ctx *)lport_priv(lport);
602
603 if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
604 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
605 goto out;
606 }
607
608 fcport = (struct qedf_rport *)&rp[1];
609
610 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
611 if (!io_req) {
612 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
613 rc = SUCCESS;
614 goto out;
615 }
616
617 if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
618 test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
619 test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
620 QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in "
621 "cleanup or abort processing or already "
622 "completed.\n", io_req->xid);
623 rc = SUCCESS;
624 goto out;
625 }
626
627 QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
628 "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
629
630 if (qedf->stop_io_on_error) {
631 qedf_stop_all_io(qedf);
632 rc = SUCCESS;
633 goto out;
634 }
635
636 init_completion(&io_req->abts_done);
637 rval = qedf_initiate_abts(io_req, true);
638 if (rval) {
639 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
640 goto out;
641 }
642
643 wait_for_completion(&io_req->abts_done);
644
645 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
646 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
647 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
648 /*
649 * If we get a reponse to the abort this is success from
650 * the perspective that all references to the command have
651 * been removed from the driver and firmware
652 */
653 rc = SUCCESS;
654 } else {
655 /* If the abort and cleanup failed then return a failure */
656 rc = FAILED;
657 }
658
659 if (rc == SUCCESS)
660 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
661 io_req->xid);
662 else
663 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
664 io_req->xid);
665
666 out:
667 return rc;
668 }
669
qedf_eh_target_reset(struct scsi_cmnd * sc_cmd)670 static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
671 {
672 QEDF_ERR(NULL, "TARGET RESET Issued...");
673 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
674 }
675
qedf_eh_device_reset(struct scsi_cmnd * sc_cmd)676 static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
677 {
678 QEDF_ERR(NULL, "LUN RESET Issued...\n");
679 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
680 }
681
qedf_wait_for_upload(struct qedf_ctx * qedf)682 void qedf_wait_for_upload(struct qedf_ctx *qedf)
683 {
684 while (1) {
685 if (atomic_read(&qedf->num_offloads))
686 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
687 "Waiting for all uploads to complete.\n");
688 else
689 break;
690 msleep(500);
691 }
692 }
693
694 /* Performs soft reset of qedf_ctx by simulating a link down/up */
qedf_ctx_soft_reset(struct fc_lport * lport)695 static void qedf_ctx_soft_reset(struct fc_lport *lport)
696 {
697 struct qedf_ctx *qedf;
698
699 if (lport->vport) {
700 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
701 return;
702 }
703
704 qedf = lport_priv(lport);
705
706 /* For host reset, essentially do a soft link up/down */
707 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
708 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
709 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
710 0);
711 qedf_wait_for_upload(qedf);
712 atomic_set(&qedf->link_state, QEDF_LINK_UP);
713 qedf->vlan_id = 0;
714 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
715 0);
716 }
717
718 /* Reset the host by gracefully logging out and then logging back in */
qedf_eh_host_reset(struct scsi_cmnd * sc_cmd)719 static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
720 {
721 struct fc_lport *lport;
722 struct qedf_ctx *qedf;
723
724 lport = shost_priv(sc_cmd->device->host);
725 qedf = lport_priv(lport);
726
727 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
728 test_bit(QEDF_UNLOADING, &qedf->flags))
729 return FAILED;
730
731 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
732
733 qedf_ctx_soft_reset(lport);
734
735 return SUCCESS;
736 }
737
qedf_slave_configure(struct scsi_device * sdev)738 static int qedf_slave_configure(struct scsi_device *sdev)
739 {
740 if (qedf_queue_depth) {
741 scsi_change_queue_depth(sdev, qedf_queue_depth);
742 }
743
744 return 0;
745 }
746
747 static struct scsi_host_template qedf_host_template = {
748 .module = THIS_MODULE,
749 .name = QEDF_MODULE_NAME,
750 .this_id = -1,
751 .cmd_per_lun = 32,
752 .use_clustering = ENABLE_CLUSTERING,
753 .max_sectors = 0xffff,
754 .queuecommand = qedf_queuecommand,
755 .shost_attrs = qedf_host_attrs,
756 .eh_abort_handler = qedf_eh_abort,
757 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
758 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
759 .eh_host_reset_handler = qedf_eh_host_reset,
760 .slave_configure = qedf_slave_configure,
761 .dma_boundary = QED_HW_DMA_BOUNDARY,
762 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
763 .can_queue = FCOE_PARAMS_NUM_TASKS,
764 .change_queue_depth = scsi_change_queue_depth,
765 };
766
qedf_get_paged_crc_eof(struct sk_buff * skb,int tlen)767 static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
768 {
769 int rc;
770
771 spin_lock(&qedf_global_lock);
772 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
773 spin_unlock(&qedf_global_lock);
774
775 return rc;
776 }
777
qedf_fcport_lookup(struct qedf_ctx * qedf,u32 port_id)778 static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
779 {
780 struct qedf_rport *fcport;
781 struct fc_rport_priv *rdata;
782
783 rcu_read_lock();
784 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
785 rdata = fcport->rdata;
786 if (rdata == NULL)
787 continue;
788 if (rdata->ids.port_id == port_id) {
789 rcu_read_unlock();
790 return fcport;
791 }
792 }
793 rcu_read_unlock();
794
795 /* Return NULL to caller to let them know fcport was not found */
796 return NULL;
797 }
798
799 /* Transmits an ELS frame over an offloaded session */
qedf_xmit_l2_frame(struct qedf_rport * fcport,struct fc_frame * fp)800 static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
801 {
802 struct fc_frame_header *fh;
803 int rc = 0;
804
805 fh = fc_frame_header_get(fp);
806 if ((fh->fh_type == FC_TYPE_ELS) &&
807 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
808 switch (fc_frame_payload_op(fp)) {
809 case ELS_ADISC:
810 qedf_send_adisc(fcport, fp);
811 rc = 1;
812 break;
813 }
814 }
815
816 return rc;
817 }
818
819 /**
820 * qedf_xmit - qedf FCoE frame transmit function
821 *
822 */
qedf_xmit(struct fc_lport * lport,struct fc_frame * fp)823 static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
824 {
825 struct fc_lport *base_lport;
826 struct qedf_ctx *qedf;
827 struct ethhdr *eh;
828 struct fcoe_crc_eof *cp;
829 struct sk_buff *skb;
830 struct fc_frame_header *fh;
831 struct fcoe_hdr *hp;
832 u8 sof, eof;
833 u32 crc;
834 unsigned int hlen, tlen, elen;
835 int wlen;
836 struct fc_stats *stats;
837 struct fc_lport *tmp_lport;
838 struct fc_lport *vn_port = NULL;
839 struct qedf_rport *fcport;
840 int rc;
841 u16 vlan_tci = 0;
842
843 qedf = (struct qedf_ctx *)lport_priv(lport);
844
845 fh = fc_frame_header_get(fp);
846 skb = fp_skb(fp);
847
848 /* Filter out traffic to other NPIV ports on the same host */
849 if (lport->vport)
850 base_lport = shost_priv(vport_to_shost(lport->vport));
851 else
852 base_lport = lport;
853
854 /* Flag if the destination is the base port */
855 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
856 vn_port = base_lport;
857 } else {
858 /* Got through the list of vports attached to the base_lport
859 * and see if we have a match with the destination address.
860 */
861 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
862 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
863 vn_port = tmp_lport;
864 break;
865 }
866 }
867 }
868 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
869 struct fc_rport_priv *rdata = NULL;
870
871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
872 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
873 kfree_skb(skb);
874 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
875 if (rdata)
876 rdata->retries = lport->max_rport_retry_count;
877 return -EINVAL;
878 }
879 /* End NPIV filtering */
880
881 if (!qedf->ctlr.sel_fcf) {
882 kfree_skb(skb);
883 return 0;
884 }
885
886 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
887 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
888 kfree_skb(skb);
889 return 0;
890 }
891
892 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
893 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
894 kfree_skb(skb);
895 return 0;
896 }
897
898 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
899 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
900 return 0;
901 }
902
903 /* Check to see if this needs to be sent on an offloaded session */
904 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
905
906 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
907 rc = qedf_xmit_l2_frame(fcport, fp);
908 /*
909 * If the frame was successfully sent over the middle path
910 * then do not try to also send it over the LL2 path
911 */
912 if (rc)
913 return 0;
914 }
915
916 sof = fr_sof(fp);
917 eof = fr_eof(fp);
918
919 elen = sizeof(struct ethhdr);
920 hlen = sizeof(struct fcoe_hdr);
921 tlen = sizeof(struct fcoe_crc_eof);
922 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
923
924 skb->ip_summed = CHECKSUM_NONE;
925 crc = fcoe_fc_crc(fp);
926
927 /* copy port crc and eof to the skb buff */
928 if (skb_is_nonlinear(skb)) {
929 skb_frag_t *frag;
930
931 if (qedf_get_paged_crc_eof(skb, tlen)) {
932 kfree_skb(skb);
933 return -ENOMEM;
934 }
935 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
936 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
937 } else {
938 cp = skb_put(skb, tlen);
939 }
940
941 memset(cp, 0, sizeof(*cp));
942 cp->fcoe_eof = eof;
943 cp->fcoe_crc32 = cpu_to_le32(~crc);
944 if (skb_is_nonlinear(skb)) {
945 kunmap_atomic(cp);
946 cp = NULL;
947 }
948
949
950 /* adjust skb network/transport offsets to match mac/fcoe/port */
951 skb_push(skb, elen + hlen);
952 skb_reset_mac_header(skb);
953 skb_reset_network_header(skb);
954 skb->mac_len = elen;
955 skb->protocol = htons(ETH_P_FCOE);
956
957 /*
958 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
959 * for FIP/FCoE traffic.
960 */
961 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
962
963 /* fill up mac and fcoe headers */
964 eh = eth_hdr(skb);
965 eh->h_proto = htons(ETH_P_FCOE);
966 if (qedf->ctlr.map_dest)
967 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
968 else
969 /* insert GW address */
970 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
971
972 /* Set the source MAC address */
973 ether_addr_copy(eh->h_source, qedf->data_src_addr);
974
975 hp = (struct fcoe_hdr *)(eh + 1);
976 memset(hp, 0, sizeof(*hp));
977 if (FC_FCOE_VER)
978 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
979 hp->fcoe_sof = sof;
980
981 /*update tx stats */
982 stats = per_cpu_ptr(lport->stats, get_cpu());
983 stats->TxFrames++;
984 stats->TxWords += wlen;
985 put_cpu();
986
987 /* Get VLAN ID from skb for printing purposes */
988 __vlan_hwaccel_get_tag(skb, &vlan_tci);
989
990 /* send down to lld */
991 fr_dev(fp) = lport;
992 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
993 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
994 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
995 vlan_tci);
996 if (qedf_dump_frames)
997 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
998 1, skb->data, skb->len, false);
999 qed_ops->ll2->start_xmit(qedf->cdev, skb);
1000
1001 return 0;
1002 }
1003
qedf_alloc_sq(struct qedf_ctx * qedf,struct qedf_rport * fcport)1004 static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1005 {
1006 int rval = 0;
1007 u32 *pbl;
1008 dma_addr_t page;
1009 int num_pages;
1010
1011 /* Calculate appropriate queue and PBL sizes */
1012 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1013 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1014 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1015 sizeof(void *);
1016 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1017
1018 fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1019 fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
1020 if (!fcport->sq) {
1021 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
1022 rval = 1;
1023 goto out;
1024 }
1025
1026 fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
1027 fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1028 if (!fcport->sq_pbl) {
1029 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
1030 rval = 1;
1031 goto out_free_sq;
1032 }
1033
1034 /* Create PBL */
1035 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1036 page = fcport->sq_dma;
1037 pbl = (u32 *)fcport->sq_pbl;
1038
1039 while (num_pages--) {
1040 *pbl = U64_LO(page);
1041 pbl++;
1042 *pbl = U64_HI(page);
1043 pbl++;
1044 page += QEDF_PAGE_SIZE;
1045 }
1046
1047 return rval;
1048
1049 out_free_sq:
1050 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1051 fcport->sq_dma);
1052 out:
1053 return rval;
1054 }
1055
qedf_free_sq(struct qedf_ctx * qedf,struct qedf_rport * fcport)1056 static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1057 {
1058 if (fcport->sq_pbl)
1059 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1060 fcport->sq_pbl, fcport->sq_pbl_dma);
1061 if (fcport->sq)
1062 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1063 fcport->sq, fcport->sq_dma);
1064 }
1065
qedf_offload_connection(struct qedf_ctx * qedf,struct qedf_rport * fcport)1066 static int qedf_offload_connection(struct qedf_ctx *qedf,
1067 struct qedf_rport *fcport)
1068 {
1069 struct qed_fcoe_params_offload conn_info;
1070 u32 port_id;
1071 int rval;
1072 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1073
1074 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1075 "portid=%06x.\n", fcport->rdata->ids.port_id);
1076 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1077 &fcport->fw_cid, &fcport->p_doorbell);
1078 if (rval) {
1079 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1080 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1081 rval = 1; /* For some reason qed returns 0 on failure here */
1082 goto out;
1083 }
1084
1085 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1086 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1087 fcport->fw_cid, fcport->handle);
1088
1089 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1090
1091 /* Fill in the offload connection info */
1092 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1093
1094 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1095 conn_info.sq_next_page_addr =
1096 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1097
1098 /* Need to use our FCoE MAC for the offload session */
1099 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
1100
1101 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1102
1103 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1104 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1105 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1106 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1107
1108 /* Set VLAN data */
1109 conn_info.vlan_tag = qedf->vlan_id <<
1110 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1111 conn_info.vlan_tag |=
1112 qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1113 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1114 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1115
1116 /* Set host port source id */
1117 port_id = fc_host_port_id(qedf->lport->host);
1118 fcport->sid = port_id;
1119 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1120 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1121 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1122
1123 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1124
1125 /* Set remote port destination id */
1126 port_id = fcport->rdata->rport->port_id;
1127 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1128 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1129 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1130
1131 conn_info.def_q_idx = 0; /* Default index for send queue? */
1132
1133 /* Set FC-TAPE specific flags if needed */
1134 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1135 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1136 "Enable CONF, REC for portid=%06x.\n",
1137 fcport->rdata->ids.port_id);
1138 conn_info.flags |= 1 <<
1139 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1140 conn_info.flags |=
1141 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1142 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1143 }
1144
1145 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1146 if (rval) {
1147 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1148 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1149 goto out_free_conn;
1150 } else
1151 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1152 "succeeded portid=%06x total_sqe=%d.\n",
1153 fcport->rdata->ids.port_id, total_sqe);
1154
1155 spin_lock_init(&fcport->rport_lock);
1156 atomic_set(&fcport->free_sqes, total_sqe);
1157 return 0;
1158 out_free_conn:
1159 qed_ops->release_conn(qedf->cdev, fcport->handle);
1160 out:
1161 return rval;
1162 }
1163
1164 #define QEDF_TERM_BUFF_SIZE 10
qedf_upload_connection(struct qedf_ctx * qedf,struct qedf_rport * fcport)1165 static void qedf_upload_connection(struct qedf_ctx *qedf,
1166 struct qedf_rport *fcport)
1167 {
1168 void *term_params;
1169 dma_addr_t term_params_dma;
1170
1171 /* Term params needs to be a DMA coherent buffer as qed shared the
1172 * physical DMA address with the firmware. The buffer may be used in
1173 * the receive path so we may eventually have to move this.
1174 */
1175 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1176 &term_params_dma, GFP_KERNEL);
1177
1178 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1179 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1180
1181 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1182 qed_ops->release_conn(qedf->cdev, fcport->handle);
1183
1184 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1185 term_params_dma);
1186 }
1187
qedf_cleanup_fcport(struct qedf_ctx * qedf,struct qedf_rport * fcport)1188 static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1189 struct qedf_rport *fcport)
1190 {
1191 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1192 fcport->rdata->ids.port_id);
1193
1194 /* Flush any remaining i/o's before we upload the connection */
1195 qedf_flush_active_ios(fcport, -1);
1196
1197 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1198 qedf_upload_connection(qedf, fcport);
1199 qedf_free_sq(qedf, fcport);
1200 fcport->rdata = NULL;
1201 fcport->qedf = NULL;
1202 }
1203
1204 /**
1205 * This event_callback is called after successful completion of libfc
1206 * initiated target login. qedf can proceed with initiating the session
1207 * establishment.
1208 */
qedf_rport_event_handler(struct fc_lport * lport,struct fc_rport_priv * rdata,enum fc_rport_event event)1209 static void qedf_rport_event_handler(struct fc_lport *lport,
1210 struct fc_rport_priv *rdata,
1211 enum fc_rport_event event)
1212 {
1213 struct qedf_ctx *qedf = lport_priv(lport);
1214 struct fc_rport *rport = rdata->rport;
1215 struct fc_rport_libfc_priv *rp;
1216 struct qedf_rport *fcport;
1217 u32 port_id;
1218 int rval;
1219 unsigned long flags;
1220
1221 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1222 "port_id = 0x%x\n", event, rdata->ids.port_id);
1223
1224 switch (event) {
1225 case RPORT_EV_READY:
1226 if (!rport) {
1227 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1228 break;
1229 }
1230
1231 rp = rport->dd_data;
1232 fcport = (struct qedf_rport *)&rp[1];
1233 fcport->qedf = qedf;
1234
1235 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1236 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1237 "portid=0x%x as max number of offloaded sessions "
1238 "reached.\n", rdata->ids.port_id);
1239 return;
1240 }
1241
1242 /*
1243 * Don't try to offload the session again. Can happen when we
1244 * get an ADISC
1245 */
1246 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1247 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1248 "offloaded, portid=0x%x.\n",
1249 rdata->ids.port_id);
1250 return;
1251 }
1252
1253 if (rport->port_id == FC_FID_DIR_SERV) {
1254 /*
1255 * qedf_rport structure doesn't exist for
1256 * directory server.
1257 * We should not come here, as lport will
1258 * take care of fabric login
1259 */
1260 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1261 "exist for dir server port_id=%x\n",
1262 rdata->ids.port_id);
1263 break;
1264 }
1265
1266 if (rdata->spp_type != FC_TYPE_FCP) {
1267 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1268 "Not offloading since spp type isn't FCP\n");
1269 break;
1270 }
1271 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1272 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1273 "Not FCP target so not offloading\n");
1274 break;
1275 }
1276
1277 fcport->rdata = rdata;
1278 fcport->rport = rport;
1279
1280 rval = qedf_alloc_sq(qedf, fcport);
1281 if (rval) {
1282 qedf_cleanup_fcport(qedf, fcport);
1283 break;
1284 }
1285
1286 /* Set device type */
1287 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1288 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1289 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1290 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1291 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1292 "portid=%06x is a TAPE device.\n",
1293 rdata->ids.port_id);
1294 } else {
1295 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1296 }
1297
1298 rval = qedf_offload_connection(qedf, fcport);
1299 if (rval) {
1300 qedf_cleanup_fcport(qedf, fcport);
1301 break;
1302 }
1303
1304 /* Add fcport to list of qedf_ctx list of offloaded ports */
1305 spin_lock_irqsave(&qedf->hba_lock, flags);
1306 list_add_rcu(&fcport->peers, &qedf->fcports);
1307 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1308
1309 /*
1310 * Set the session ready bit to let everyone know that this
1311 * connection is ready for I/O
1312 */
1313 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1314 atomic_inc(&qedf->num_offloads);
1315
1316 break;
1317 case RPORT_EV_LOGO:
1318 case RPORT_EV_FAILED:
1319 case RPORT_EV_STOP:
1320 port_id = rdata->ids.port_id;
1321 if (port_id == FC_FID_DIR_SERV)
1322 break;
1323
1324 if (!rport) {
1325 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1326 "port_id=%x - rport notcreated Yet!!\n", port_id);
1327 break;
1328 }
1329 rp = rport->dd_data;
1330 /*
1331 * Perform session upload. Note that rdata->peers is already
1332 * removed from disc->rports list before we get this event.
1333 */
1334 fcport = (struct qedf_rport *)&rp[1];
1335
1336 /* Only free this fcport if it is offloaded already */
1337 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1338 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1339 qedf_cleanup_fcport(qedf, fcport);
1340
1341 /*
1342 * Remove fcport to list of qedf_ctx list of offloaded
1343 * ports
1344 */
1345 spin_lock_irqsave(&qedf->hba_lock, flags);
1346 list_del_rcu(&fcport->peers);
1347 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1348
1349 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1350 &fcport->flags);
1351 atomic_dec(&qedf->num_offloads);
1352 }
1353
1354 break;
1355
1356 case RPORT_EV_NONE:
1357 break;
1358 }
1359 }
1360
qedf_abort_io(struct fc_lport * lport)1361 static void qedf_abort_io(struct fc_lport *lport)
1362 {
1363 /* NO-OP but need to fill in the template */
1364 }
1365
qedf_fcp_cleanup(struct fc_lport * lport)1366 static void qedf_fcp_cleanup(struct fc_lport *lport)
1367 {
1368 /*
1369 * NO-OP but need to fill in template to prevent a NULL
1370 * function pointer dereference during link down. I/Os
1371 * will be flushed when port is uploaded.
1372 */
1373 }
1374
1375 static struct libfc_function_template qedf_lport_template = {
1376 .frame_send = qedf_xmit,
1377 .fcp_abort_io = qedf_abort_io,
1378 .fcp_cleanup = qedf_fcp_cleanup,
1379 .rport_event_callback = qedf_rport_event_handler,
1380 .elsct_send = qedf_elsct_send,
1381 };
1382
qedf_fcoe_ctlr_setup(struct qedf_ctx * qedf)1383 static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1384 {
1385 fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO);
1386
1387 qedf->ctlr.send = qedf_fip_send;
1388 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1389 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1390 }
1391
qedf_setup_fdmi(struct qedf_ctx * qedf)1392 static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1393 {
1394 struct fc_lport *lport = qedf->lport;
1395 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1396 u8 buf[8];
1397 int i, pos;
1398
1399 /*
1400 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1401 */
1402 lport->fdmi_enabled = 1;
1403
1404 /*
1405 * Setup the necessary fc_host attributes to that will be used to fill
1406 * in the FDMI information.
1407 */
1408
1409 /* Get the PCI-e Device Serial Number Capability */
1410 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1411 if (pos) {
1412 pos += 4;
1413 for (i = 0; i < 8; i++)
1414 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1415
1416 snprintf(fc_host->serial_number,
1417 sizeof(fc_host->serial_number),
1418 "%02X%02X%02X%02X%02X%02X%02X%02X",
1419 buf[7], buf[6], buf[5], buf[4],
1420 buf[3], buf[2], buf[1], buf[0]);
1421 } else
1422 snprintf(fc_host->serial_number,
1423 sizeof(fc_host->serial_number), "Unknown");
1424
1425 snprintf(fc_host->manufacturer,
1426 sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1427
1428 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1429
1430 snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1431 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1432 "(FCoE)");
1433
1434 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1435 "Rev %d", qedf->pdev->revision);
1436
1437 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1438 "%s", QEDF_VERSION);
1439
1440 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1441 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1442 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1443 }
1444
qedf_lport_setup(struct qedf_ctx * qedf)1445 static int qedf_lport_setup(struct qedf_ctx *qedf)
1446 {
1447 struct fc_lport *lport = qedf->lport;
1448
1449 lport->link_up = 0;
1450 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1451 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1452 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1453 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1454 lport->boot_time = jiffies;
1455 lport->e_d_tov = 2 * 1000;
1456 lport->r_a_tov = 10 * 1000;
1457
1458 /* Set NPIV support */
1459 lport->does_npiv = 1;
1460 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1461
1462 fc_set_wwnn(lport, qedf->wwnn);
1463 fc_set_wwpn(lport, qedf->wwpn);
1464
1465 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1466
1467 /* Allocate the exchange manager */
1468 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1469 qedf->max_els_xid, NULL);
1470
1471 if (fc_lport_init_stats(lport))
1472 return -ENOMEM;
1473
1474 /* Finish lport config */
1475 fc_lport_config(lport);
1476
1477 /* Set max frame size */
1478 fc_set_mfs(lport, QEDF_MFS);
1479 fc_host_maxframe_size(lport->host) = lport->mfs;
1480
1481 /* Set default dev_loss_tmo based on module parameter */
1482 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1483
1484 /* Set symbolic node name */
1485 snprintf(fc_host_symbolic_name(lport->host), 256,
1486 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1487
1488 qedf_setup_fdmi(qedf);
1489
1490 return 0;
1491 }
1492
1493 /*
1494 * NPIV functions
1495 */
1496
qedf_vport_libfc_config(struct fc_vport * vport,struct fc_lport * lport)1497 static int qedf_vport_libfc_config(struct fc_vport *vport,
1498 struct fc_lport *lport)
1499 {
1500 lport->link_up = 0;
1501 lport->qfull = 0;
1502 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1503 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1504 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1505 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1506 lport->boot_time = jiffies;
1507 lport->e_d_tov = 2 * 1000;
1508 lport->r_a_tov = 10 * 1000;
1509 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1510
1511 /* Allocate stats for vport */
1512 if (fc_lport_init_stats(lport))
1513 return -ENOMEM;
1514
1515 /* Finish lport config */
1516 fc_lport_config(lport);
1517
1518 /* offload related configuration */
1519 lport->crc_offload = 0;
1520 lport->seq_offload = 0;
1521 lport->lro_enabled = 0;
1522 lport->lro_xid = 0;
1523 lport->lso_max = 0;
1524
1525 return 0;
1526 }
1527
qedf_vport_create(struct fc_vport * vport,bool disabled)1528 static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1529 {
1530 struct Scsi_Host *shost = vport_to_shost(vport);
1531 struct fc_lport *n_port = shost_priv(shost);
1532 struct fc_lport *vn_port;
1533 struct qedf_ctx *base_qedf = lport_priv(n_port);
1534 struct qedf_ctx *vport_qedf;
1535
1536 char buf[32];
1537 int rc = 0;
1538
1539 rc = fcoe_validate_vport_create(vport);
1540 if (rc) {
1541 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1542 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1543 "WWPN (0x%s) already exists.\n", buf);
1544 goto err1;
1545 }
1546
1547 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1548 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1549 "because link is not up.\n");
1550 rc = -EIO;
1551 goto err1;
1552 }
1553
1554 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1555 if (!vn_port) {
1556 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1557 "for vport.\n");
1558 rc = -ENOMEM;
1559 goto err1;
1560 }
1561
1562 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1563 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1564 buf);
1565
1566 /* Copy some fields from base_qedf */
1567 vport_qedf = lport_priv(vn_port);
1568 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1569
1570 /* Set qedf data specific to this vport */
1571 vport_qedf->lport = vn_port;
1572 /* Use same hba_lock as base_qedf */
1573 vport_qedf->hba_lock = base_qedf->hba_lock;
1574 vport_qedf->pdev = base_qedf->pdev;
1575 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1576 init_completion(&vport_qedf->flogi_compl);
1577 INIT_LIST_HEAD(&vport_qedf->fcports);
1578
1579 rc = qedf_vport_libfc_config(vport, vn_port);
1580 if (rc) {
1581 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1582 "for lport stats.\n");
1583 goto err2;
1584 }
1585
1586 fc_set_wwnn(vn_port, vport->node_name);
1587 fc_set_wwpn(vn_port, vport->port_name);
1588 vport_qedf->wwnn = vn_port->wwnn;
1589 vport_qedf->wwpn = vn_port->wwpn;
1590
1591 vn_port->host->transportt = qedf_fc_vport_transport_template;
1592 vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1593 vn_port->host->max_lun = qedf_max_lun;
1594 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1595 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1596
1597 rc = scsi_add_host(vn_port->host, &vport->dev);
1598 if (rc) {
1599 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1600 goto err2;
1601 }
1602
1603 /* Set default dev_loss_tmo based on module parameter */
1604 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1605
1606 /* Init libfc stuffs */
1607 memcpy(&vn_port->tt, &qedf_lport_template,
1608 sizeof(qedf_lport_template));
1609 fc_exch_init(vn_port);
1610 fc_elsct_init(vn_port);
1611 fc_lport_init(vn_port);
1612 fc_disc_init(vn_port);
1613 fc_disc_config(vn_port, vn_port);
1614
1615
1616 /* Allocate the exchange manager */
1617 shost = vport_to_shost(vport);
1618 n_port = shost_priv(shost);
1619 fc_exch_mgr_list_clone(n_port, vn_port);
1620
1621 /* Set max frame size */
1622 fc_set_mfs(vn_port, QEDF_MFS);
1623
1624 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1625
1626 if (disabled) {
1627 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1628 } else {
1629 vn_port->boot_time = jiffies;
1630 fc_fabric_login(vn_port);
1631 fc_vport_setlink(vn_port);
1632 }
1633
1634 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1635 vn_port);
1636
1637 /* Set up debug context for vport */
1638 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1639 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1640
1641 err2:
1642 scsi_host_put(vn_port->host);
1643 err1:
1644 return rc;
1645 }
1646
qedf_vport_destroy(struct fc_vport * vport)1647 static int qedf_vport_destroy(struct fc_vport *vport)
1648 {
1649 struct Scsi_Host *shost = vport_to_shost(vport);
1650 struct fc_lport *n_port = shost_priv(shost);
1651 struct fc_lport *vn_port = vport->dd_data;
1652 struct qedf_ctx *qedf = lport_priv(vn_port);
1653
1654 if (!qedf) {
1655 QEDF_ERR(NULL, "qedf is NULL.\n");
1656 goto out;
1657 }
1658
1659 /* Set unloading bit on vport qedf_ctx to prevent more I/O */
1660 set_bit(QEDF_UNLOADING, &qedf->flags);
1661
1662 mutex_lock(&n_port->lp_mutex);
1663 list_del(&vn_port->list);
1664 mutex_unlock(&n_port->lp_mutex);
1665
1666 fc_fabric_logoff(vn_port);
1667 fc_lport_destroy(vn_port);
1668
1669 /* Detach from scsi-ml */
1670 fc_remove_host(vn_port->host);
1671 scsi_remove_host(vn_port->host);
1672
1673 /*
1674 * Only try to release the exchange manager if the vn_port
1675 * configuration is complete.
1676 */
1677 if (vn_port->state == LPORT_ST_READY)
1678 fc_exch_mgr_free(vn_port);
1679
1680 /* Free memory used by statistical counters */
1681 fc_lport_free_stats(vn_port);
1682
1683 /* Release Scsi_Host */
1684 if (vn_port->host)
1685 scsi_host_put(vn_port->host);
1686
1687 out:
1688 return 0;
1689 }
1690
qedf_vport_disable(struct fc_vport * vport,bool disable)1691 static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1692 {
1693 struct fc_lport *lport = vport->dd_data;
1694
1695 if (disable) {
1696 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1697 fc_fabric_logoff(lport);
1698 } else {
1699 lport->boot_time = jiffies;
1700 fc_fabric_login(lport);
1701 fc_vport_setlink(lport);
1702 }
1703 return 0;
1704 }
1705
1706 /*
1707 * During removal we need to wait for all the vports associated with a port
1708 * to be destroyed so we avoid a race condition where libfc is still trying
1709 * to reap vports while the driver remove function has already reaped the
1710 * driver contexts associated with the physical port.
1711 */
qedf_wait_for_vport_destroy(struct qedf_ctx * qedf)1712 static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1713 {
1714 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1715
1716 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1717 "Entered.\n");
1718 while (fc_host->npiv_vports_inuse > 0) {
1719 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1720 "Waiting for all vports to be reaped.\n");
1721 msleep(1000);
1722 }
1723 }
1724
1725 /**
1726 * qedf_fcoe_reset - Resets the fcoe
1727 *
1728 * @shost: shost the reset is from
1729 *
1730 * Returns: always 0
1731 */
qedf_fcoe_reset(struct Scsi_Host * shost)1732 static int qedf_fcoe_reset(struct Scsi_Host *shost)
1733 {
1734 struct fc_lport *lport = shost_priv(shost);
1735
1736 qedf_ctx_soft_reset(lport);
1737 return 0;
1738 }
1739
qedf_fc_get_host_stats(struct Scsi_Host * shost)1740 static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1741 *shost)
1742 {
1743 struct fc_host_statistics *qedf_stats;
1744 struct fc_lport *lport = shost_priv(shost);
1745 struct qedf_ctx *qedf = lport_priv(lport);
1746 struct qed_fcoe_stats *fw_fcoe_stats;
1747
1748 qedf_stats = fc_get_host_stats(shost);
1749
1750 /* We don't collect offload stats for specific NPIV ports */
1751 if (lport->vport)
1752 goto out;
1753
1754 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1755 if (!fw_fcoe_stats) {
1756 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1757 "fw_fcoe_stats.\n");
1758 goto out;
1759 }
1760
1761 /* Query firmware for offload stats */
1762 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1763
1764 /*
1765 * The expectation is that we add our offload stats to the stats
1766 * being maintained by libfc each time the fc_get_host_status callback
1767 * is invoked. The additions are not carried over for each call to
1768 * the fc_get_host_stats callback.
1769 */
1770 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1771 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1772 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1773 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1774 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1775 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1776 qedf_stats->fcp_input_megabytes +=
1777 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1778 qedf_stats->fcp_output_megabytes +=
1779 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1780 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1781 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1782 qedf_stats->invalid_crc_count +=
1783 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1784 qedf_stats->dumped_frames =
1785 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1786 qedf_stats->error_frames +=
1787 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1788 qedf_stats->fcp_input_requests += qedf->input_requests;
1789 qedf_stats->fcp_output_requests += qedf->output_requests;
1790 qedf_stats->fcp_control_requests += qedf->control_requests;
1791 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1792 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1793
1794 kfree(fw_fcoe_stats);
1795 out:
1796 return qedf_stats;
1797 }
1798
1799 static struct fc_function_template qedf_fc_transport_fn = {
1800 .show_host_node_name = 1,
1801 .show_host_port_name = 1,
1802 .show_host_supported_classes = 1,
1803 .show_host_supported_fc4s = 1,
1804 .show_host_active_fc4s = 1,
1805 .show_host_maxframe_size = 1,
1806
1807 .show_host_port_id = 1,
1808 .show_host_supported_speeds = 1,
1809 .get_host_speed = fc_get_host_speed,
1810 .show_host_speed = 1,
1811 .show_host_port_type = 1,
1812 .get_host_port_state = fc_get_host_port_state,
1813 .show_host_port_state = 1,
1814 .show_host_symbolic_name = 1,
1815
1816 /*
1817 * Tell FC transport to allocate enough space to store the backpointer
1818 * for the associate qedf_rport struct.
1819 */
1820 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1821 sizeof(struct qedf_rport)),
1822 .show_rport_maxframe_size = 1,
1823 .show_rport_supported_classes = 1,
1824 .show_host_fabric_name = 1,
1825 .show_starget_node_name = 1,
1826 .show_starget_port_name = 1,
1827 .show_starget_port_id = 1,
1828 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1829 .show_rport_dev_loss_tmo = 1,
1830 .get_fc_host_stats = qedf_fc_get_host_stats,
1831 .issue_fc_host_lip = qedf_fcoe_reset,
1832 .vport_create = qedf_vport_create,
1833 .vport_delete = qedf_vport_destroy,
1834 .vport_disable = qedf_vport_disable,
1835 .bsg_request = fc_lport_bsg_request,
1836 };
1837
1838 static struct fc_function_template qedf_fc_vport_transport_fn = {
1839 .show_host_node_name = 1,
1840 .show_host_port_name = 1,
1841 .show_host_supported_classes = 1,
1842 .show_host_supported_fc4s = 1,
1843 .show_host_active_fc4s = 1,
1844 .show_host_maxframe_size = 1,
1845 .show_host_port_id = 1,
1846 .show_host_supported_speeds = 1,
1847 .get_host_speed = fc_get_host_speed,
1848 .show_host_speed = 1,
1849 .show_host_port_type = 1,
1850 .get_host_port_state = fc_get_host_port_state,
1851 .show_host_port_state = 1,
1852 .show_host_symbolic_name = 1,
1853 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1854 sizeof(struct qedf_rport)),
1855 .show_rport_maxframe_size = 1,
1856 .show_rport_supported_classes = 1,
1857 .show_host_fabric_name = 1,
1858 .show_starget_node_name = 1,
1859 .show_starget_port_name = 1,
1860 .show_starget_port_id = 1,
1861 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1862 .show_rport_dev_loss_tmo = 1,
1863 .get_fc_host_stats = fc_get_host_stats,
1864 .issue_fc_host_lip = qedf_fcoe_reset,
1865 .bsg_request = fc_lport_bsg_request,
1866 };
1867
qedf_fp_has_work(struct qedf_fastpath * fp)1868 static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1869 {
1870 struct qedf_ctx *qedf = fp->qedf;
1871 struct global_queue *que;
1872 struct qed_sb_info *sb_info = fp->sb_info;
1873 struct status_block *sb = sb_info->sb_virt;
1874 u16 prod_idx;
1875
1876 /* Get the pointer to the global CQ this completion is on */
1877 que = qedf->global_queues[fp->sb_id];
1878
1879 /* Be sure all responses have been written to PI */
1880 rmb();
1881
1882 /* Get the current firmware producer index */
1883 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1884
1885 return (que->cq_prod_idx != prod_idx);
1886 }
1887
1888 /*
1889 * Interrupt handler code.
1890 */
1891
1892 /* Process completion queue and copy CQE contents for deferred processesing
1893 *
1894 * Return true if we should wake the I/O thread, false if not.
1895 */
qedf_process_completions(struct qedf_fastpath * fp)1896 static bool qedf_process_completions(struct qedf_fastpath *fp)
1897 {
1898 struct qedf_ctx *qedf = fp->qedf;
1899 struct qed_sb_info *sb_info = fp->sb_info;
1900 struct status_block *sb = sb_info->sb_virt;
1901 struct global_queue *que;
1902 u16 prod_idx;
1903 struct fcoe_cqe *cqe;
1904 struct qedf_io_work *io_work;
1905 int num_handled = 0;
1906 unsigned int cpu;
1907 struct qedf_ioreq *io_req = NULL;
1908 u16 xid;
1909 u16 new_cqes;
1910 u32 comp_type;
1911
1912 /* Get the current firmware producer index */
1913 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1914
1915 /* Get the pointer to the global CQ this completion is on */
1916 que = qedf->global_queues[fp->sb_id];
1917
1918 /* Calculate the amount of new elements since last processing */
1919 new_cqes = (prod_idx >= que->cq_prod_idx) ?
1920 (prod_idx - que->cq_prod_idx) :
1921 0x10000 - que->cq_prod_idx + prod_idx;
1922
1923 /* Save producer index */
1924 que->cq_prod_idx = prod_idx;
1925
1926 while (new_cqes) {
1927 fp->completions++;
1928 num_handled++;
1929 cqe = &que->cq[que->cq_cons_idx];
1930
1931 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1932 FCOE_CQE_CQE_TYPE_MASK;
1933
1934 /*
1935 * Process unsolicited CQEs directly in the interrupt handler
1936 * sine we need the fastpath ID
1937 */
1938 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1939 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1940 "Unsolicated CQE.\n");
1941 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1942 /*
1943 * Don't add a work list item. Increment consumer
1944 * consumer index and move on.
1945 */
1946 goto inc_idx;
1947 }
1948
1949 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1950 io_req = &qedf->cmd_mgr->cmds[xid];
1951
1952 /*
1953 * Figure out which percpu thread we should queue this I/O
1954 * on.
1955 */
1956 if (!io_req)
1957 /* If there is not io_req assocated with this CQE
1958 * just queue it on CPU 0
1959 */
1960 cpu = 0;
1961 else {
1962 cpu = io_req->cpu;
1963 io_req->int_cpu = smp_processor_id();
1964 }
1965
1966 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
1967 if (!io_work) {
1968 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
1969 "work for I/O completion.\n");
1970 continue;
1971 }
1972 memset(io_work, 0, sizeof(struct qedf_io_work));
1973
1974 INIT_WORK(&io_work->work, qedf_fp_io_handler);
1975
1976 /* Copy contents of CQE for deferred processing */
1977 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
1978
1979 io_work->qedf = fp->qedf;
1980 io_work->fp = NULL; /* Only used for unsolicited frames */
1981
1982 queue_work_on(cpu, qedf_io_wq, &io_work->work);
1983
1984 inc_idx:
1985 que->cq_cons_idx++;
1986 if (que->cq_cons_idx == fp->cq_num_entries)
1987 que->cq_cons_idx = 0;
1988 new_cqes--;
1989 }
1990
1991 return true;
1992 }
1993
1994
1995 /* MSI-X fastpath handler code */
qedf_msix_handler(int irq,void * dev_id)1996 static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
1997 {
1998 struct qedf_fastpath *fp = dev_id;
1999
2000 if (!fp) {
2001 QEDF_ERR(NULL, "fp is null.\n");
2002 return IRQ_HANDLED;
2003 }
2004 if (!fp->sb_info) {
2005 QEDF_ERR(NULL, "fp->sb_info in null.");
2006 return IRQ_HANDLED;
2007 }
2008
2009 /*
2010 * Disable interrupts for this status block while we process new
2011 * completions
2012 */
2013 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2014
2015 while (1) {
2016 qedf_process_completions(fp);
2017
2018 if (qedf_fp_has_work(fp) == 0) {
2019 /* Update the sb information */
2020 qed_sb_update_sb_idx(fp->sb_info);
2021
2022 /* Check for more work */
2023 rmb();
2024
2025 if (qedf_fp_has_work(fp) == 0) {
2026 /* Re-enable interrupts */
2027 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2028 return IRQ_HANDLED;
2029 }
2030 }
2031 }
2032
2033 /* Do we ever want to break out of above loop? */
2034 return IRQ_HANDLED;
2035 }
2036
2037 /* simd handler for MSI/INTa */
qedf_simd_int_handler(void * cookie)2038 static void qedf_simd_int_handler(void *cookie)
2039 {
2040 /* Cookie is qedf_ctx struct */
2041 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2042
2043 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2044 }
2045
2046 #define QEDF_SIMD_HANDLER_NUM 0
qedf_sync_free_irqs(struct qedf_ctx * qedf)2047 static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2048 {
2049 int i;
2050
2051 if (qedf->int_info.msix_cnt) {
2052 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2053 synchronize_irq(qedf->int_info.msix[i].vector);
2054 irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2055 NULL);
2056 irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2057 NULL);
2058 free_irq(qedf->int_info.msix[i].vector,
2059 &qedf->fp_array[i]);
2060 }
2061 } else
2062 qed_ops->common->simd_handler_clean(qedf->cdev,
2063 QEDF_SIMD_HANDLER_NUM);
2064
2065 qedf->int_info.used_cnt = 0;
2066 qed_ops->common->set_fp_int(qedf->cdev, 0);
2067 }
2068
qedf_request_msix_irq(struct qedf_ctx * qedf)2069 static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2070 {
2071 int i, rc, cpu;
2072
2073 cpu = cpumask_first(cpu_online_mask);
2074 for (i = 0; i < qedf->num_queues; i++) {
2075 rc = request_irq(qedf->int_info.msix[i].vector,
2076 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2077
2078 if (rc) {
2079 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2080 qedf_sync_free_irqs(qedf);
2081 return rc;
2082 }
2083
2084 qedf->int_info.used_cnt++;
2085 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2086 get_cpu_mask(cpu));
2087 cpu = cpumask_next(cpu, cpu_online_mask);
2088 }
2089
2090 return 0;
2091 }
2092
qedf_setup_int(struct qedf_ctx * qedf)2093 static int qedf_setup_int(struct qedf_ctx *qedf)
2094 {
2095 int rc = 0;
2096
2097 /*
2098 * Learn interrupt configuration
2099 */
2100 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
2101 if (rc <= 0)
2102 return 0;
2103
2104 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2105 if (rc)
2106 return 0;
2107
2108 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2109 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2110 num_online_cpus());
2111
2112 if (qedf->int_info.msix_cnt)
2113 return qedf_request_msix_irq(qedf);
2114
2115 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2116 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2117 qedf->int_info.used_cnt = 1;
2118
2119 return 0;
2120 }
2121
2122 /* Main function for libfc frame reception */
qedf_recv_frame(struct qedf_ctx * qedf,struct sk_buff * skb)2123 static void qedf_recv_frame(struct qedf_ctx *qedf,
2124 struct sk_buff *skb)
2125 {
2126 u32 fr_len;
2127 struct fc_lport *lport;
2128 struct fc_frame_header *fh;
2129 struct fcoe_crc_eof crc_eof;
2130 struct fc_frame *fp;
2131 u8 *mac = NULL;
2132 u8 *dest_mac = NULL;
2133 struct fcoe_hdr *hp;
2134 struct qedf_rport *fcport;
2135 struct fc_lport *vn_port;
2136 u32 f_ctl;
2137
2138 lport = qedf->lport;
2139 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2140 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2141 kfree_skb(skb);
2142 return;
2143 }
2144
2145 if (skb_is_nonlinear(skb))
2146 skb_linearize(skb);
2147 mac = eth_hdr(skb)->h_source;
2148 dest_mac = eth_hdr(skb)->h_dest;
2149
2150 /* Pull the header */
2151 hp = (struct fcoe_hdr *)skb->data;
2152 fh = (struct fc_frame_header *) skb_transport_header(skb);
2153 skb_pull(skb, sizeof(struct fcoe_hdr));
2154 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2155
2156 fp = (struct fc_frame *)skb;
2157 fc_frame_init(fp);
2158 fr_dev(fp) = lport;
2159 fr_sof(fp) = hp->fcoe_sof;
2160 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2161 kfree_skb(skb);
2162 return;
2163 }
2164 fr_eof(fp) = crc_eof.fcoe_eof;
2165 fr_crc(fp) = crc_eof.fcoe_crc32;
2166 if (pskb_trim(skb, fr_len)) {
2167 kfree_skb(skb);
2168 return;
2169 }
2170
2171 fh = fc_frame_header_get(fp);
2172
2173 /*
2174 * Invalid frame filters.
2175 */
2176
2177 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2178 fh->fh_type == FC_TYPE_FCP) {
2179 /* Drop FCP data. We dont this in L2 path */
2180 kfree_skb(skb);
2181 return;
2182 }
2183 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2184 fh->fh_type == FC_TYPE_ELS) {
2185 switch (fc_frame_payload_op(fp)) {
2186 case ELS_LOGO:
2187 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2188 /* drop non-FIP LOGO */
2189 kfree_skb(skb);
2190 return;
2191 }
2192 break;
2193 }
2194 }
2195
2196 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2197 /* Drop incoming ABTS */
2198 kfree_skb(skb);
2199 return;
2200 }
2201
2202 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
2203 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2204 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
2205 return;
2206 }
2207
2208 if (qedf->ctlr.state) {
2209 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
2210 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2211 "Wrong source address: mac:%pM dest_addr:%pM.\n",
2212 mac, qedf->ctlr.dest_addr);
2213 kfree_skb(skb);
2214 return;
2215 }
2216 }
2217
2218 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2219
2220 /*
2221 * If the destination ID from the frame header does not match what we
2222 * have on record for lport and the search for a NPIV port came up
2223 * empty then this is not addressed to our port so simply drop it.
2224 */
2225 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
2226 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2227 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
2228 lport->port_id, ntoh24(fh->fh_d_id));
2229 kfree_skb(skb);
2230 return;
2231 }
2232
2233 f_ctl = ntoh24(fh->fh_f_ctl);
2234 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2235 (f_ctl & FC_FC_EX_CTX)) {
2236 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2237 kfree_skb(skb);
2238 return;
2239 }
2240
2241 /*
2242 * If a connection is uploading, drop incoming FCoE frames as there
2243 * is a small window where we could try to return a frame while libfc
2244 * is trying to clean things up.
2245 */
2246
2247 /* Get fcport associated with d_id if it exists */
2248 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2249
2250 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2251 &fcport->flags)) {
2252 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2253 "Connection uploading, dropping fp=%p.\n", fp);
2254 kfree_skb(skb);
2255 return;
2256 }
2257
2258 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2259 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2260 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2261 fh->fh_type);
2262 if (qedf_dump_frames)
2263 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2264 1, skb->data, skb->len, false);
2265 fc_exch_recv(lport, fp);
2266 }
2267
qedf_ll2_process_skb(struct work_struct * work)2268 static void qedf_ll2_process_skb(struct work_struct *work)
2269 {
2270 struct qedf_skb_work *skb_work =
2271 container_of(work, struct qedf_skb_work, work);
2272 struct qedf_ctx *qedf = skb_work->qedf;
2273 struct sk_buff *skb = skb_work->skb;
2274 struct ethhdr *eh;
2275
2276 if (!qedf) {
2277 QEDF_ERR(NULL, "qedf is NULL\n");
2278 goto err_out;
2279 }
2280
2281 eh = (struct ethhdr *)skb->data;
2282
2283 /* Undo VLAN encapsulation */
2284 if (eh->h_proto == htons(ETH_P_8021Q)) {
2285 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
2286 eh = skb_pull(skb, VLAN_HLEN);
2287 skb_reset_mac_header(skb);
2288 }
2289
2290 /*
2291 * Process either a FIP frame or FCoE frame based on the
2292 * protocol value. If it's not either just drop the
2293 * frame.
2294 */
2295 if (eh->h_proto == htons(ETH_P_FIP)) {
2296 qedf_fip_recv(qedf, skb);
2297 goto out;
2298 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2299 __skb_pull(skb, ETH_HLEN);
2300 qedf_recv_frame(qedf, skb);
2301 goto out;
2302 } else
2303 goto err_out;
2304
2305 err_out:
2306 kfree_skb(skb);
2307 out:
2308 kfree(skb_work);
2309 return;
2310 }
2311
qedf_ll2_rx(void * cookie,struct sk_buff * skb,u32 arg1,u32 arg2)2312 static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2313 u32 arg1, u32 arg2)
2314 {
2315 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2316 struct qedf_skb_work *skb_work;
2317
2318 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2319 if (!skb_work) {
2320 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2321 "dropping frame.\n");
2322 kfree_skb(skb);
2323 return 0;
2324 }
2325
2326 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2327 skb_work->skb = skb;
2328 skb_work->qedf = qedf;
2329 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2330
2331 return 0;
2332 }
2333
2334 static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2335 .rx_cb = qedf_ll2_rx,
2336 .tx_cb = NULL,
2337 };
2338
2339 /* Main thread to process I/O completions */
qedf_fp_io_handler(struct work_struct * work)2340 void qedf_fp_io_handler(struct work_struct *work)
2341 {
2342 struct qedf_io_work *io_work =
2343 container_of(work, struct qedf_io_work, work);
2344 u32 comp_type;
2345
2346 /*
2347 * Deferred part of unsolicited CQE sends
2348 * frame to libfc.
2349 */
2350 comp_type = (io_work->cqe.cqe_data >>
2351 FCOE_CQE_CQE_TYPE_SHIFT) &
2352 FCOE_CQE_CQE_TYPE_MASK;
2353 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2354 io_work->fp)
2355 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2356 else
2357 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2358
2359 kfree(io_work);
2360 }
2361
qedf_alloc_and_init_sb(struct qedf_ctx * qedf,struct qed_sb_info * sb_info,u16 sb_id)2362 static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2363 struct qed_sb_info *sb_info, u16 sb_id)
2364 {
2365 struct status_block *sb_virt;
2366 dma_addr_t sb_phys;
2367 int ret;
2368
2369 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
2370 sizeof(struct status_block), &sb_phys, GFP_KERNEL);
2371
2372 if (!sb_virt) {
2373 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2374 "for id = %d.\n", sb_id);
2375 return -ENOMEM;
2376 }
2377
2378 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2379 sb_id, QED_SB_TYPE_STORAGE);
2380
2381 if (ret) {
2382 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2383 "failed for id = %d.\n", sb_id);
2384 return ret;
2385 }
2386
2387 return 0;
2388 }
2389
qedf_free_sb(struct qedf_ctx * qedf,struct qed_sb_info * sb_info)2390 static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2391 {
2392 if (sb_info->sb_virt)
2393 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2394 (void *)sb_info->sb_virt, sb_info->sb_phys);
2395 }
2396
qedf_destroy_sb(struct qedf_ctx * qedf)2397 static void qedf_destroy_sb(struct qedf_ctx *qedf)
2398 {
2399 int id;
2400 struct qedf_fastpath *fp = NULL;
2401
2402 for (id = 0; id < qedf->num_queues; id++) {
2403 fp = &(qedf->fp_array[id]);
2404 if (fp->sb_id == QEDF_SB_ID_NULL)
2405 break;
2406 qedf_free_sb(qedf, fp->sb_info);
2407 kfree(fp->sb_info);
2408 }
2409 kfree(qedf->fp_array);
2410 }
2411
qedf_prepare_sb(struct qedf_ctx * qedf)2412 static int qedf_prepare_sb(struct qedf_ctx *qedf)
2413 {
2414 int id;
2415 struct qedf_fastpath *fp;
2416 int ret;
2417
2418 qedf->fp_array =
2419 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2420 GFP_KERNEL);
2421
2422 if (!qedf->fp_array) {
2423 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2424 "failed.\n");
2425 return -ENOMEM;
2426 }
2427
2428 for (id = 0; id < qedf->num_queues; id++) {
2429 fp = &(qedf->fp_array[id]);
2430 fp->sb_id = QEDF_SB_ID_NULL;
2431 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2432 if (!fp->sb_info) {
2433 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2434 "allocation failed.\n");
2435 goto err;
2436 }
2437 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2438 if (ret) {
2439 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2440 "initialization failed.\n");
2441 goto err;
2442 }
2443 fp->sb_id = id;
2444 fp->qedf = qedf;
2445 fp->cq_num_entries =
2446 qedf->global_queues[id]->cq_mem_size /
2447 sizeof(struct fcoe_cqe);
2448 }
2449 err:
2450 return 0;
2451 }
2452
qedf_process_cqe(struct qedf_ctx * qedf,struct fcoe_cqe * cqe)2453 void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2454 {
2455 u16 xid;
2456 struct qedf_ioreq *io_req;
2457 struct qedf_rport *fcport;
2458 u32 comp_type;
2459
2460 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2461 FCOE_CQE_CQE_TYPE_MASK;
2462
2463 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2464 io_req = &qedf->cmd_mgr->cmds[xid];
2465
2466 /* Completion not for a valid I/O anymore so just return */
2467 if (!io_req)
2468 return;
2469
2470 fcport = io_req->fcport;
2471
2472 if (fcport == NULL) {
2473 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2474 return;
2475 }
2476
2477 /*
2478 * Check that fcport is offloaded. If it isn't then the spinlock
2479 * isn't valid and shouldn't be taken. We should just return.
2480 */
2481 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2482 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2483 return;
2484 }
2485
2486
2487 switch (comp_type) {
2488 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2489 atomic_inc(&fcport->free_sqes);
2490 switch (io_req->cmd_type) {
2491 case QEDF_SCSI_CMD:
2492 qedf_scsi_completion(qedf, cqe, io_req);
2493 break;
2494 case QEDF_ELS:
2495 qedf_process_els_compl(qedf, cqe, io_req);
2496 break;
2497 case QEDF_TASK_MGMT_CMD:
2498 qedf_process_tmf_compl(qedf, cqe, io_req);
2499 break;
2500 case QEDF_SEQ_CLEANUP:
2501 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2502 break;
2503 }
2504 break;
2505 case FCOE_ERROR_DETECTION_CQE_TYPE:
2506 atomic_inc(&fcport->free_sqes);
2507 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2508 "Error detect CQE.\n");
2509 qedf_process_error_detect(qedf, cqe, io_req);
2510 break;
2511 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2512 atomic_inc(&fcport->free_sqes);
2513 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2514 "Cleanup CQE.\n");
2515 qedf_process_cleanup_compl(qedf, cqe, io_req);
2516 break;
2517 case FCOE_ABTS_CQE_TYPE:
2518 atomic_inc(&fcport->free_sqes);
2519 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2520 "Abort CQE.\n");
2521 qedf_process_abts_compl(qedf, cqe, io_req);
2522 break;
2523 case FCOE_DUMMY_CQE_TYPE:
2524 atomic_inc(&fcport->free_sqes);
2525 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2526 "Dummy CQE.\n");
2527 break;
2528 case FCOE_LOCAL_COMP_CQE_TYPE:
2529 atomic_inc(&fcport->free_sqes);
2530 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2531 "Local completion CQE.\n");
2532 break;
2533 case FCOE_WARNING_CQE_TYPE:
2534 atomic_inc(&fcport->free_sqes);
2535 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2536 "Warning CQE.\n");
2537 qedf_process_warning_compl(qedf, cqe, io_req);
2538 break;
2539 case MAX_FCOE_CQE_TYPE:
2540 atomic_inc(&fcport->free_sqes);
2541 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2542 "Max FCoE CQE.\n");
2543 break;
2544 default:
2545 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2546 "Default CQE.\n");
2547 break;
2548 }
2549 }
2550
qedf_free_bdq(struct qedf_ctx * qedf)2551 static void qedf_free_bdq(struct qedf_ctx *qedf)
2552 {
2553 int i;
2554
2555 if (qedf->bdq_pbl_list)
2556 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2557 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2558
2559 if (qedf->bdq_pbl)
2560 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2561 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2562
2563 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2564 if (qedf->bdq[i].buf_addr) {
2565 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2566 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2567 }
2568 }
2569 }
2570
qedf_free_global_queues(struct qedf_ctx * qedf)2571 static void qedf_free_global_queues(struct qedf_ctx *qedf)
2572 {
2573 int i;
2574 struct global_queue **gl = qedf->global_queues;
2575
2576 for (i = 0; i < qedf->num_queues; i++) {
2577 if (!gl[i])
2578 continue;
2579
2580 if (gl[i]->cq)
2581 dma_free_coherent(&qedf->pdev->dev,
2582 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2583 if (gl[i]->cq_pbl)
2584 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2585 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2586
2587 kfree(gl[i]);
2588 }
2589
2590 qedf_free_bdq(qedf);
2591 }
2592
qedf_alloc_bdq(struct qedf_ctx * qedf)2593 static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2594 {
2595 int i;
2596 struct scsi_bd *pbl;
2597 u64 *list;
2598 dma_addr_t page;
2599
2600 /* Alloc dma memory for BDQ buffers */
2601 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2602 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2603 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2604 if (!qedf->bdq[i].buf_addr) {
2605 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2606 "buffer %d.\n", i);
2607 return -ENOMEM;
2608 }
2609 }
2610
2611 /* Alloc dma memory for BDQ page buffer list */
2612 qedf->bdq_pbl_mem_size =
2613 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2614 qedf->bdq_pbl_mem_size =
2615 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2616
2617 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2618 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2619 if (!qedf->bdq_pbl) {
2620 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2621 return -ENOMEM;
2622 }
2623
2624 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2625 "BDQ PBL addr=0x%p dma=%pad\n",
2626 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
2627
2628 /*
2629 * Populate BDQ PBL with physical and virtual address of individual
2630 * BDQ buffers
2631 */
2632 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2633 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2634 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2635 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
2636 pbl->opaque.hi = 0;
2637 /* Opaque lo data is an index into the BDQ array */
2638 pbl->opaque.lo = cpu_to_le32(i);
2639 pbl++;
2640 }
2641
2642 /* Allocate list of PBL pages */
2643 qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
2644 QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2645 if (!qedf->bdq_pbl_list) {
2646 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
2647 return -ENOMEM;
2648 }
2649
2650 /*
2651 * Now populate PBL list with pages that contain pointers to the
2652 * individual buffers.
2653 */
2654 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2655 QEDF_PAGE_SIZE;
2656 list = (u64 *)qedf->bdq_pbl_list;
2657 page = qedf->bdq_pbl_list_dma;
2658 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2659 *list = qedf->bdq_pbl_dma;
2660 list++;
2661 page += QEDF_PAGE_SIZE;
2662 }
2663
2664 return 0;
2665 }
2666
qedf_alloc_global_queues(struct qedf_ctx * qedf)2667 static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2668 {
2669 u32 *list;
2670 int i;
2671 int status = 0, rc;
2672 u32 *pbl;
2673 dma_addr_t page;
2674 int num_pages;
2675
2676 /* Allocate and map CQs, RQs */
2677 /*
2678 * Number of global queues (CQ / RQ). This should
2679 * be <= number of available MSIX vectors for the PF
2680 */
2681 if (!qedf->num_queues) {
2682 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2683 return 1;
2684 }
2685
2686 /*
2687 * Make sure we allocated the PBL that will contain the physical
2688 * addresses of our queues
2689 */
2690 if (!qedf->p_cpuq) {
2691 status = 1;
2692 goto mem_alloc_failure;
2693 }
2694
2695 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2696 * qedf->num_queues), GFP_KERNEL);
2697 if (!qedf->global_queues) {
2698 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2699 "queues array ptr memory\n");
2700 return -ENOMEM;
2701 }
2702 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2703 "qedf->global_queues=%p.\n", qedf->global_queues);
2704
2705 /* Allocate DMA coherent buffers for BDQ */
2706 rc = qedf_alloc_bdq(qedf);
2707 if (rc)
2708 goto mem_alloc_failure;
2709
2710 /* Allocate a CQ and an associated PBL for each MSI-X vector */
2711 for (i = 0; i < qedf->num_queues; i++) {
2712 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2713 GFP_KERNEL);
2714 if (!qedf->global_queues[i]) {
2715 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
2716 "global queue %d.\n", i);
2717 status = -ENOMEM;
2718 goto mem_alloc_failure;
2719 }
2720
2721 qedf->global_queues[i]->cq_mem_size =
2722 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2723 qedf->global_queues[i]->cq_mem_size =
2724 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2725
2726 qedf->global_queues[i]->cq_pbl_size =
2727 (qedf->global_queues[i]->cq_mem_size /
2728 PAGE_SIZE) * sizeof(void *);
2729 qedf->global_queues[i]->cq_pbl_size =
2730 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2731
2732 qedf->global_queues[i]->cq =
2733 dma_zalloc_coherent(&qedf->pdev->dev,
2734 qedf->global_queues[i]->cq_mem_size,
2735 &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2736
2737 if (!qedf->global_queues[i]->cq) {
2738 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
2739 status = -ENOMEM;
2740 goto mem_alloc_failure;
2741 }
2742
2743 qedf->global_queues[i]->cq_pbl =
2744 dma_zalloc_coherent(&qedf->pdev->dev,
2745 qedf->global_queues[i]->cq_pbl_size,
2746 &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2747
2748 if (!qedf->global_queues[i]->cq_pbl) {
2749 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
2750 status = -ENOMEM;
2751 goto mem_alloc_failure;
2752 }
2753
2754 /* Create PBL */
2755 num_pages = qedf->global_queues[i]->cq_mem_size /
2756 QEDF_PAGE_SIZE;
2757 page = qedf->global_queues[i]->cq_dma;
2758 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2759
2760 while (num_pages--) {
2761 *pbl = U64_LO(page);
2762 pbl++;
2763 *pbl = U64_HI(page);
2764 pbl++;
2765 page += QEDF_PAGE_SIZE;
2766 }
2767 /* Set the initial consumer index for cq */
2768 qedf->global_queues[i]->cq_cons_idx = 0;
2769 }
2770
2771 list = (u32 *)qedf->p_cpuq;
2772
2773 /*
2774 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2775 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
2776 * to the physical address which contains an array of pointers to
2777 * the physical addresses of the specific queue pages.
2778 */
2779 for (i = 0; i < qedf->num_queues; i++) {
2780 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2781 list++;
2782 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2783 list++;
2784 *list = U64_LO(0);
2785 list++;
2786 *list = U64_HI(0);
2787 list++;
2788 }
2789
2790 return 0;
2791
2792 mem_alloc_failure:
2793 qedf_free_global_queues(qedf);
2794 return status;
2795 }
2796
qedf_set_fcoe_pf_param(struct qedf_ctx * qedf)2797 static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2798 {
2799 u8 sq_num_pbl_pages;
2800 u32 sq_mem_size;
2801 u32 cq_mem_size;
2802 u32 cq_num_entries;
2803 int rval;
2804
2805 /*
2806 * The number of completion queues/fastpath interrupts/status blocks
2807 * we allocation is the minimum off:
2808 *
2809 * Number of CPUs
2810 * Number allocated by qed for our PCI function
2811 */
2812 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
2813
2814 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2815 qedf->num_queues);
2816
2817 qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2818 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2819 &qedf->hw_p_cpuq);
2820
2821 if (!qedf->p_cpuq) {
2822 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2823 return 1;
2824 }
2825
2826 rval = qedf_alloc_global_queues(qedf);
2827 if (rval) {
2828 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2829 "failed.\n");
2830 return 1;
2831 }
2832
2833 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2834 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2835 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2836 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2837
2838 /* Calculate CQ num entries */
2839 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2840 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2841 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2842
2843 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
2844
2845 /* Setup the value for fcoe PF */
2846 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2847 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2848 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2849 (u64)qedf->hw_p_cpuq;
2850 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2851
2852 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2853
2854 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2855 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2856
2857 /* log_page_size: 12 for 4KB pages */
2858 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2859
2860 qedf->pf_params.fcoe_pf_params.mtu = 9000;
2861 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2862 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2863
2864 /* BDQ address and size */
2865 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2866 qedf->bdq_pbl_list_dma;
2867 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2868 qedf->bdq_pbl_list_num_entries;
2869 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2870
2871 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2872 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2873 qedf->bdq_pbl_list,
2874 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2875 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2876
2877 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2878 "cq_num_entries=%d.\n",
2879 qedf->pf_params.fcoe_pf_params.cq_num_entries);
2880
2881 return 0;
2882 }
2883
2884 /* Free DMA coherent memory for array of queue pointers we pass to qed */
qedf_free_fcoe_pf_param(struct qedf_ctx * qedf)2885 static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2886 {
2887 size_t size = 0;
2888
2889 if (qedf->p_cpuq) {
2890 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2891 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2892 qedf->hw_p_cpuq);
2893 }
2894
2895 qedf_free_global_queues(qedf);
2896
2897 if (qedf->global_queues)
2898 kfree(qedf->global_queues);
2899 }
2900
2901 /*
2902 * PCI driver functions
2903 */
2904
2905 static const struct pci_device_id qedf_pci_tbl[] = {
2906 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2907 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2908 {0}
2909 };
2910 MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2911
2912 static struct pci_driver qedf_pci_driver = {
2913 .name = QEDF_MODULE_NAME,
2914 .id_table = qedf_pci_tbl,
2915 .probe = qedf_probe,
2916 .remove = qedf_remove,
2917 };
2918
__qedf_probe(struct pci_dev * pdev,int mode)2919 static int __qedf_probe(struct pci_dev *pdev, int mode)
2920 {
2921 int rc = -EINVAL;
2922 struct fc_lport *lport;
2923 struct qedf_ctx *qedf;
2924 struct Scsi_Host *host;
2925 bool is_vf = false;
2926 struct qed_ll2_params params;
2927 char host_buf[20];
2928 struct qed_link_params link_params;
2929 int status;
2930 void *task_start, *task_end;
2931 struct qed_slowpath_params slowpath_params;
2932 struct qed_probe_params qed_params;
2933 u16 tmp;
2934
2935 /*
2936 * When doing error recovery we didn't reap the lport so don't try
2937 * to reallocate it.
2938 */
2939 if (mode != QEDF_MODE_RECOVERY) {
2940 lport = libfc_host_alloc(&qedf_host_template,
2941 sizeof(struct qedf_ctx));
2942
2943 if (!lport) {
2944 QEDF_ERR(NULL, "Could not allocate lport.\n");
2945 rc = -ENOMEM;
2946 goto err0;
2947 }
2948
2949 /* Initialize qedf_ctx */
2950 qedf = lport_priv(lport);
2951 qedf->lport = lport;
2952 qedf->ctlr.lp = lport;
2953 qedf->pdev = pdev;
2954 qedf->dbg_ctx.pdev = pdev;
2955 qedf->dbg_ctx.host_no = lport->host->host_no;
2956 spin_lock_init(&qedf->hba_lock);
2957 INIT_LIST_HEAD(&qedf->fcports);
2958 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2959 atomic_set(&qedf->num_offloads, 0);
2960 qedf->stop_io_on_error = false;
2961 pci_set_drvdata(pdev, qedf);
2962 init_completion(&qedf->fipvlan_compl);
2963
2964 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
2965 "QLogic FastLinQ FCoE Module qedf %s, "
2966 "FW %d.%d.%d.%d\n", QEDF_VERSION,
2967 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
2968 FW_ENGINEERING_VERSION);
2969 } else {
2970 /* Init pointers during recovery */
2971 qedf = pci_get_drvdata(pdev);
2972 lport = qedf->lport;
2973 }
2974
2975 host = lport->host;
2976
2977 /* Allocate mempool for qedf_io_work structs */
2978 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
2979 qedf_io_work_cache);
2980 if (qedf->io_mempool == NULL) {
2981 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
2982 goto err1;
2983 }
2984 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
2985 qedf->io_mempool);
2986
2987 sprintf(host_buf, "qedf_%u_link",
2988 qedf->lport->host->host_no);
2989 qedf->link_update_wq = create_workqueue(host_buf);
2990 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
2991 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
2992
2993 qedf->fipvlan_retries = qedf_fipvlan_retries;
2994
2995 /*
2996 * Common probe. Takes care of basic hardware init and pci_*
2997 * functions.
2998 */
2999 memset(&qed_params, 0, sizeof(qed_params));
3000 qed_params.protocol = QED_PROTOCOL_FCOE;
3001 qed_params.dp_module = qedf_dp_module;
3002 qed_params.dp_level = qedf_dp_level;
3003 qed_params.is_vf = is_vf;
3004 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3005 if (!qedf->cdev) {
3006 rc = -ENODEV;
3007 goto err1;
3008 }
3009
3010 /* Learn information crucial for qedf to progress */
3011 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3012 if (rc) {
3013 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3014 goto err1;
3015 }
3016
3017 /* queue allocation code should come here
3018 * order should be
3019 * slowpath_start
3020 * status block allocation
3021 * interrupt registration (to get min number of queues)
3022 * set_fcoe_pf_param
3023 * qed_sp_fcoe_func_start
3024 */
3025 rc = qedf_set_fcoe_pf_param(qedf);
3026 if (rc) {
3027 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3028 goto err2;
3029 }
3030 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3031
3032 /* Record BDQ producer doorbell addresses */
3033 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3034 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3035 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3036 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3037 qedf->bdq_secondary_prod);
3038
3039 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3040
3041 rc = qedf_prepare_sb(qedf);
3042 if (rc) {
3043
3044 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3045 goto err2;
3046 }
3047
3048 /* Start the Slowpath-process */
3049 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3050 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3051 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3052 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3053 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
3054 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
3055 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3056 if (rc) {
3057 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3058 goto err2;
3059 }
3060
3061 /*
3062 * update_pf_params needs to be called before and after slowpath
3063 * start
3064 */
3065 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3066
3067 /* Setup interrupts */
3068 rc = qedf_setup_int(qedf);
3069 if (rc)
3070 goto err3;
3071
3072 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3073 if (rc) {
3074 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3075 goto err4;
3076 }
3077 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3078 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3079 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3080 "end=%p block_size=%u.\n", task_start, task_end,
3081 qedf->tasks.size);
3082
3083 /*
3084 * We need to write the number of BDs in the BDQ we've preallocated so
3085 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3086 * packet arrives.
3087 */
3088 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3089 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3090 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3091 qedf->bdq_prod_idx);
3092 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3093 tmp = readw(qedf->bdq_primary_prod);
3094 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3095 tmp = readw(qedf->bdq_secondary_prod);
3096
3097 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3098
3099 /* Now that the dev_info struct has been filled in set the MAC
3100 * address
3101 */
3102 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3103 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3104 qedf->mac);
3105
3106 /*
3107 * Set the WWNN and WWPN in the following way:
3108 *
3109 * If the info we get from qed is non-zero then use that to set the
3110 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3111 * on the MAC address.
3112 */
3113 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3114 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3115 "Setting WWPN and WWNN from qed dev_info.\n");
3116 qedf->wwnn = qedf->dev_info.wwnn;
3117 qedf->wwpn = qedf->dev_info.wwpn;
3118 } else {
3119 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3120 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3121 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3122 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3123 }
3124 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3125 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3126
3127 sprintf(host_buf, "host_%d", host->host_no);
3128 qed_ops->common->set_name(qedf->cdev, host_buf);
3129
3130
3131 /* Set xid max values */
3132 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3133 qedf->max_els_xid = QEDF_MAX_ELS_XID;
3134
3135 /* Allocate cmd mgr */
3136 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3137 if (!qedf->cmd_mgr) {
3138 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
3139 goto err5;
3140 }
3141
3142 if (mode != QEDF_MODE_RECOVERY) {
3143 host->transportt = qedf_fc_transport_template;
3144 host->can_queue = QEDF_MAX_ELS_XID;
3145 host->max_lun = qedf_max_lun;
3146 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3147 rc = scsi_add_host(host, &pdev->dev);
3148 if (rc)
3149 goto err6;
3150 }
3151
3152 memset(¶ms, 0, sizeof(params));
3153 params.mtu = 9000;
3154 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3155
3156 /* Start LL2 processing thread */
3157 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3158 qedf->ll2_recv_wq =
3159 create_workqueue(host_buf);
3160 if (!qedf->ll2_recv_wq) {
3161 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
3162 goto err7;
3163 }
3164
3165 #ifdef CONFIG_DEBUG_FS
3166 qedf_dbg_host_init(&(qedf->dbg_ctx), &qedf_debugfs_ops,
3167 &qedf_dbg_fops);
3168 #endif
3169
3170 /* Start LL2 */
3171 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3172 rc = qed_ops->ll2->start(qedf->cdev, ¶ms);
3173 if (rc) {
3174 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3175 goto err7;
3176 }
3177 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3178
3179 /* Set initial FIP/FCoE VLAN to NULL */
3180 qedf->vlan_id = 0;
3181
3182 /*
3183 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3184 * they were not reaped during the unload process.
3185 */
3186 if (mode != QEDF_MODE_RECOVERY) {
3187 /* Setup imbedded fcoe controller */
3188 qedf_fcoe_ctlr_setup(qedf);
3189
3190 /* Setup lport */
3191 rc = qedf_lport_setup(qedf);
3192 if (rc) {
3193 QEDF_ERR(&(qedf->dbg_ctx),
3194 "qedf_lport_setup failed.\n");
3195 goto err7;
3196 }
3197 }
3198
3199 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3200 qedf->timer_work_queue =
3201 create_workqueue(host_buf);
3202 if (!qedf->timer_work_queue) {
3203 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3204 "workqueue.\n");
3205 goto err7;
3206 }
3207
3208 /* DPC workqueue is not reaped during recovery unload */
3209 if (mode != QEDF_MODE_RECOVERY) {
3210 sprintf(host_buf, "qedf_%u_dpc",
3211 qedf->lport->host->host_no);
3212 qedf->dpc_wq = create_workqueue(host_buf);
3213 }
3214
3215 /*
3216 * GRC dump and sysfs parameters are not reaped during the recovery
3217 * unload process.
3218 */
3219 if (mode != QEDF_MODE_RECOVERY) {
3220 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev);
3221 if (qedf->grcdump_size) {
3222 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3223 qedf->grcdump_size);
3224 if (rc) {
3225 QEDF_ERR(&(qedf->dbg_ctx),
3226 "GRC Dump buffer alloc failed.\n");
3227 qedf->grcdump = NULL;
3228 }
3229
3230 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3231 "grcdump: addr=%p, size=%u.\n",
3232 qedf->grcdump, qedf->grcdump_size);
3233 }
3234 qedf_create_sysfs_ctx_attr(qedf);
3235
3236 /* Initialize I/O tracing for this adapter */
3237 spin_lock_init(&qedf->io_trace_lock);
3238 qedf->io_trace_idx = 0;
3239 }
3240
3241 init_completion(&qedf->flogi_compl);
3242
3243 status = qed_ops->common->update_drv_state(qedf->cdev, true);
3244 if (status)
3245 QEDF_ERR(&(qedf->dbg_ctx),
3246 "Failed to send drv state to MFW.\n");
3247
3248 memset(&link_params, 0, sizeof(struct qed_link_params));
3249 link_params.link_up = true;
3250 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3251 if (status)
3252 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3253
3254 /* Start/restart discovery */
3255 if (mode == QEDF_MODE_RECOVERY)
3256 fcoe_ctlr_link_up(&qedf->ctlr);
3257 else
3258 fc_fabric_login(lport);
3259
3260 /* All good */
3261 return 0;
3262
3263 err7:
3264 if (qedf->ll2_recv_wq)
3265 destroy_workqueue(qedf->ll2_recv_wq);
3266 fc_remove_host(qedf->lport->host);
3267 scsi_remove_host(qedf->lport->host);
3268 #ifdef CONFIG_DEBUG_FS
3269 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3270 #endif
3271 err6:
3272 qedf_cmd_mgr_free(qedf->cmd_mgr);
3273 err5:
3274 qed_ops->stop(qedf->cdev);
3275 err4:
3276 qedf_free_fcoe_pf_param(qedf);
3277 qedf_sync_free_irqs(qedf);
3278 err3:
3279 qed_ops->common->slowpath_stop(qedf->cdev);
3280 err2:
3281 qed_ops->common->remove(qedf->cdev);
3282 err1:
3283 scsi_host_put(lport->host);
3284 err0:
3285 return rc;
3286 }
3287
qedf_probe(struct pci_dev * pdev,const struct pci_device_id * id)3288 static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3289 {
3290 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3291 }
3292
__qedf_remove(struct pci_dev * pdev,int mode)3293 static void __qedf_remove(struct pci_dev *pdev, int mode)
3294 {
3295 struct qedf_ctx *qedf;
3296 int rc;
3297
3298 if (!pdev) {
3299 QEDF_ERR(NULL, "pdev is NULL.\n");
3300 return;
3301 }
3302
3303 qedf = pci_get_drvdata(pdev);
3304
3305 /*
3306 * Prevent race where we're in board disable work and then try to
3307 * rmmod the module.
3308 */
3309 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3310 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3311 return;
3312 }
3313
3314 if (mode != QEDF_MODE_RECOVERY)
3315 set_bit(QEDF_UNLOADING, &qedf->flags);
3316
3317 /* Logoff the fabric to upload all connections */
3318 if (mode == QEDF_MODE_RECOVERY)
3319 fcoe_ctlr_link_down(&qedf->ctlr);
3320 else
3321 fc_fabric_logoff(qedf->lport);
3322 qedf_wait_for_upload(qedf);
3323
3324 #ifdef CONFIG_DEBUG_FS
3325 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3326 #endif
3327
3328 /* Stop any link update handling */
3329 cancel_delayed_work_sync(&qedf->link_update);
3330 destroy_workqueue(qedf->link_update_wq);
3331 qedf->link_update_wq = NULL;
3332
3333 if (qedf->timer_work_queue)
3334 destroy_workqueue(qedf->timer_work_queue);
3335
3336 /* Stop Light L2 */
3337 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3338 qed_ops->ll2->stop(qedf->cdev);
3339 if (qedf->ll2_recv_wq)
3340 destroy_workqueue(qedf->ll2_recv_wq);
3341
3342 /* Stop fastpath */
3343 qedf_sync_free_irqs(qedf);
3344 qedf_destroy_sb(qedf);
3345
3346 /*
3347 * During recovery don't destroy OS constructs that represent the
3348 * physical port.
3349 */
3350 if (mode != QEDF_MODE_RECOVERY) {
3351 qedf_free_grc_dump_buf(&qedf->grcdump);
3352 qedf_remove_sysfs_ctx_attr(qedf);
3353
3354 /* Remove all SCSI/libfc/libfcoe structures */
3355 fcoe_ctlr_destroy(&qedf->ctlr);
3356 fc_lport_destroy(qedf->lport);
3357 fc_remove_host(qedf->lport->host);
3358 scsi_remove_host(qedf->lport->host);
3359 }
3360
3361 qedf_cmd_mgr_free(qedf->cmd_mgr);
3362
3363 if (mode != QEDF_MODE_RECOVERY) {
3364 fc_exch_mgr_free(qedf->lport);
3365 fc_lport_free_stats(qedf->lport);
3366
3367 /* Wait for all vports to be reaped */
3368 qedf_wait_for_vport_destroy(qedf);
3369 }
3370
3371 /*
3372 * Now that all connections have been uploaded we can stop the
3373 * rest of the qed operations
3374 */
3375 qed_ops->stop(qedf->cdev);
3376
3377 if (mode != QEDF_MODE_RECOVERY) {
3378 if (qedf->dpc_wq) {
3379 /* Stop general DPC handling */
3380 destroy_workqueue(qedf->dpc_wq);
3381 qedf->dpc_wq = NULL;
3382 }
3383 }
3384
3385 /* Final shutdown for the board */
3386 qedf_free_fcoe_pf_param(qedf);
3387 if (mode != QEDF_MODE_RECOVERY) {
3388 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3389 pci_set_drvdata(pdev, NULL);
3390 }
3391
3392 rc = qed_ops->common->update_drv_state(qedf->cdev, false);
3393 if (rc)
3394 QEDF_ERR(&(qedf->dbg_ctx),
3395 "Failed to send drv state to MFW.\n");
3396
3397 qed_ops->common->slowpath_stop(qedf->cdev);
3398 qed_ops->common->remove(qedf->cdev);
3399
3400 mempool_destroy(qedf->io_mempool);
3401
3402 /* Only reap the Scsi_host on a real removal */
3403 if (mode != QEDF_MODE_RECOVERY)
3404 scsi_host_put(qedf->lport->host);
3405 }
3406
qedf_remove(struct pci_dev * pdev)3407 static void qedf_remove(struct pci_dev *pdev)
3408 {
3409 /* Check to make sure this function wasn't already disabled */
3410 if (!atomic_read(&pdev->enable_cnt))
3411 return;
3412
3413 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3414 }
3415
3416 /*
3417 * Module Init/Remove
3418 */
3419
qedf_init(void)3420 static int __init qedf_init(void)
3421 {
3422 int ret;
3423
3424 /* If debug=1 passed, set the default log mask */
3425 if (qedf_debug == QEDF_LOG_DEFAULT)
3426 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3427
3428 /* Print driver banner */
3429 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3430 QEDF_VERSION);
3431
3432 /* Create kmem_cache for qedf_io_work structs */
3433 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3434 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3435 if (qedf_io_work_cache == NULL) {
3436 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3437 goto err1;
3438 }
3439 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3440 qedf_io_work_cache);
3441
3442 qed_ops = qed_get_fcoe_ops();
3443 if (!qed_ops) {
3444 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3445 goto err1;
3446 }
3447
3448 #ifdef CONFIG_DEBUG_FS
3449 qedf_dbg_init("qedf");
3450 #endif
3451
3452 qedf_fc_transport_template =
3453 fc_attach_transport(&qedf_fc_transport_fn);
3454 if (!qedf_fc_transport_template) {
3455 QEDF_ERR(NULL, "Could not register with FC transport\n");
3456 goto err2;
3457 }
3458
3459 qedf_fc_vport_transport_template =
3460 fc_attach_transport(&qedf_fc_vport_transport_fn);
3461 if (!qedf_fc_vport_transport_template) {
3462 QEDF_ERR(NULL, "Could not register vport template with FC "
3463 "transport\n");
3464 goto err3;
3465 }
3466
3467 qedf_io_wq = create_workqueue("qedf_io_wq");
3468 if (!qedf_io_wq) {
3469 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3470 goto err4;
3471 }
3472
3473 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3474
3475 ret = pci_register_driver(&qedf_pci_driver);
3476 if (ret) {
3477 QEDF_ERR(NULL, "Failed to register driver\n");
3478 goto err5;
3479 }
3480
3481 return 0;
3482
3483 err5:
3484 destroy_workqueue(qedf_io_wq);
3485 err4:
3486 fc_release_transport(qedf_fc_vport_transport_template);
3487 err3:
3488 fc_release_transport(qedf_fc_transport_template);
3489 err2:
3490 #ifdef CONFIG_DEBUG_FS
3491 qedf_dbg_exit();
3492 #endif
3493 qed_put_fcoe_ops();
3494 err1:
3495 return -EINVAL;
3496 }
3497
qedf_cleanup(void)3498 static void __exit qedf_cleanup(void)
3499 {
3500 pci_unregister_driver(&qedf_pci_driver);
3501
3502 destroy_workqueue(qedf_io_wq);
3503
3504 fc_release_transport(qedf_fc_vport_transport_template);
3505 fc_release_transport(qedf_fc_transport_template);
3506 #ifdef CONFIG_DEBUG_FS
3507 qedf_dbg_exit();
3508 #endif
3509 qed_put_fcoe_ops();
3510
3511 kmem_cache_destroy(qedf_io_work_cache);
3512 }
3513
3514 MODULE_LICENSE("GPL");
3515 MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3516 MODULE_AUTHOR("QLogic Corporation");
3517 MODULE_VERSION(QEDF_VERSION);
3518 module_init(qedf_init);
3519 module_exit(qedf_cleanup);
3520