blob: b96c928035886bfa7c4d976638185334f52f2023 [file] [log] [blame]
Dupuis, Chad61d86582017-02-15 06:28:23 -08001/*
2 * QLogic FCoE Offload Driver
Chad Dupuis12d0b122017-05-31 06:33:49 -07003 * Copyright (c) 2016-2017 Cavium Inc.
Dupuis, Chad61d86582017-02-15 06:28:23 -08004 *
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>
Chad Dupuisa3cd42a92017-08-15 10:08:17 -070021#include <scsi/fc_frame.h>
Dupuis, Chad61d86582017-02-15 06:28:23 -080022#include <linux/if_ether.h>
23#include <linux/if_vlan.h>
24#include <linux/cpu.h>
25#include "qedf.h"
Arnd Bergmannd9ea4632018-02-02 14:12:18 +010026#include "qedf_dbg.h"
Chad Dupuis5185b322017-05-31 06:33:48 -070027#include <uapi/linux/pci_regs.h>
Dupuis, Chad61d86582017-02-15 06:28:23 -080028
29const struct qed_fcoe_ops *qed_ops;
30
31static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id);
32static void qedf_remove(struct pci_dev *pdev);
33
Dupuis, Chad61d86582017-02-15 06:28:23 -080034/*
35 * Driver module parameters.
36 */
37static unsigned int qedf_dev_loss_tmo = 60;
38module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO);
39MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached "
40 "remote ports (default 60)");
41
42uint qedf_debug = QEDF_LOG_INFO;
43module_param_named(debug, qedf_debug, uint, S_IRUGO);
Chad Dupuis0516abd2017-08-15 10:08:20 -070044MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging"
Dupuis, Chad61d86582017-02-15 06:28:23 -080045 " mask");
46
Chad Dupuisc3ef86f2018-04-25 06:08:46 -070047static uint qedf_fipvlan_retries = 60;
Dupuis, Chad61d86582017-02-15 06:28:23 -080048module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO);
49MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt "
Chad Dupuisc3ef86f2018-04-25 06:08:46 -070050 "before giving up (default 60)");
Dupuis, Chad61d86582017-02-15 06:28:23 -080051
52static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN;
53module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO);
54MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails "
55 "(default 1002).");
56
57static uint qedf_default_prio = QEDF_DEFAULT_PRIO;
58module_param_named(default_prio, qedf_default_prio, int, S_IRUGO);
59MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE"
60 " traffic (default 3).");
61
62uint qedf_dump_frames;
63module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR);
64MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames "
65 "(default off)");
66
67static uint qedf_queue_depth;
68module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO);
69MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered "
70 "by the qedf driver. Default is 0 (use OS default).");
71
72uint qedf_io_tracing;
73module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR);
74MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions "
75 "into trace buffer. (default off).");
76
77static uint qedf_max_lun = MAX_FIBRE_LUNS;
78module_param_named(max_lun, qedf_max_lun, int, S_IRUGO);
79MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver "
80 "supports. (default 0xffffffff)");
81
82uint qedf_link_down_tmo;
83module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO);
84MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the "
85 "link is down by N seconds.");
86
87bool qedf_retry_delay;
88module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR);
89MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry "
90 "delay handling (default off).");
91
Chad Dupuisba17d372018-04-25 06:08:51 -070092static bool qedf_dcbx_no_wait;
93module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR);
94MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start "
95 "sending FIP VLAN requests on link up (Default: off).");
96
Dupuis, Chad61d86582017-02-15 06:28:23 -080097static uint qedf_dp_module;
98module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO);
99MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed "
100 "qed module during probe.");
101
Chad Dupuis2b82a622017-05-31 06:33:54 -0700102static uint qedf_dp_level = QED_LEVEL_NOTICE;
Dupuis, Chad61d86582017-02-15 06:28:23 -0800103module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO);
104MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module "
105 "during probe (0-3: 0 more verbose).");
106
107struct workqueue_struct *qedf_io_wq;
108
109static struct fcoe_percpu_s qedf_global;
110static DEFINE_SPINLOCK(qedf_global_lock);
111
112static struct kmem_cache *qedf_io_work_cache;
113
114void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id)
115{
116 qedf->vlan_id = vlan_id;
117 qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT;
118 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x "
119 "prio=%d.\n", vlan_id, qedf_default_prio);
120}
121
122/* Returns true if we have a valid vlan, false otherwise */
123static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf)
124{
125 int rc;
126
127 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
128 QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n");
129 return false;
130 }
131
132 while (qedf->fipvlan_retries--) {
133 if (qedf->vlan_id > 0)
134 return true;
135 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
136 "Retry %d.\n", qedf->fipvlan_retries);
137 init_completion(&qedf->fipvlan_compl);
138 qedf_fcoe_send_vlan_req(qedf);
139 rc = wait_for_completion_timeout(&qedf->fipvlan_compl,
140 1 * HZ);
141 if (rc > 0) {
142 fcoe_ctlr_link_up(&qedf->ctlr);
143 return true;
144 }
145 }
146
147 return false;
148}
149
150static void qedf_handle_link_update(struct work_struct *work)
151{
152 struct qedf_ctx *qedf =
153 container_of(work, struct qedf_ctx, link_update.work);
154 int rc;
155
156 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n");
157
158 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) {
159 rc = qedf_initiate_fipvlan_req(qedf);
160 if (rc)
161 return;
162 /*
163 * If we get here then we never received a repsonse to our
164 * fip vlan request so set the vlan_id to the default and
165 * tell FCoE that the link is up
166 */
167 QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN "
168 "response, falling back to default VLAN %d.\n",
169 qedf_fallback_vlan);
Chad Dupuiscf291162017-08-15 10:08:18 -0700170 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
Dupuis, Chad61d86582017-02-15 06:28:23 -0800171
172 /*
173 * Zero out data_src_addr so we'll update it with the new
174 * lport port_id
175 */
176 eth_zero_addr(qedf->data_src_addr);
177 fcoe_ctlr_link_up(&qedf->ctlr);
178 } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) {
179 /*
180 * If we hit here and link_down_tmo_valid is still 1 it means
181 * that link_down_tmo timed out so set it to 0 to make sure any
182 * other readers have accurate state.
183 */
184 atomic_set(&qedf->link_down_tmo_valid, 0);
185 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
186 "Calling fcoe_ctlr_link_down().\n");
187 fcoe_ctlr_link_down(&qedf->ctlr);
188 qedf_wait_for_upload(qedf);
189 /* Reset the number of FIP VLAN retries */
190 qedf->fipvlan_retries = qedf_fipvlan_retries;
191 }
192}
193
Chad Dupuisa3cd42a92017-08-15 10:08:17 -0700194#define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1
195#define QEDF_FCOE_MAC_METHOD_FCF_MAP 2
196#define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3
197static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp)
198{
199 u8 *granted_mac;
200 struct fc_frame_header *fh = fc_frame_header_get(fp);
201 u8 fc_map[3];
202 int method = 0;
203
204 /* Get granted MAC address from FIP FLOGI payload */
205 granted_mac = fr_cb(fp)->granted_mac;
206
207 /*
208 * We set the source MAC for FCoE traffic based on the Granted MAC
209 * address from the switch.
210 *
211 * If granted_mac is non-zero, we used that.
212 * If the granted_mac is zeroed out, created the FCoE MAC based on
213 * the sel_fcf->fc_map and the d_id fo the FLOGI frame.
214 * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the
215 * d_id of the FLOGI frame.
216 */
217 if (!is_zero_ether_addr(granted_mac)) {
218 ether_addr_copy(qedf->data_src_addr, granted_mac);
219 method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC;
220 } else if (qedf->ctlr.sel_fcf->fc_map != 0) {
221 hton24(fc_map, qedf->ctlr.sel_fcf->fc_map);
222 qedf->data_src_addr[0] = fc_map[0];
223 qedf->data_src_addr[1] = fc_map[1];
224 qedf->data_src_addr[2] = fc_map[2];
225 qedf->data_src_addr[3] = fh->fh_d_id[0];
226 qedf->data_src_addr[4] = fh->fh_d_id[1];
227 qedf->data_src_addr[5] = fh->fh_d_id[2];
228 method = QEDF_FCOE_MAC_METHOD_FCF_MAP;
229 } else {
230 fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id);
231 method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC;
232 }
233
234 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
235 "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method);
236}
237
Dupuis, Chad61d86582017-02-15 06:28:23 -0800238static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp,
239 void *arg)
240{
241 struct fc_exch *exch = fc_seq_exch(seq);
242 struct fc_lport *lport = exch->lp;
243 struct qedf_ctx *qedf = lport_priv(lport);
244
245 if (!qedf) {
246 QEDF_ERR(NULL, "qedf is NULL.\n");
247 return;
248 }
249
250 /*
251 * If ERR_PTR is set then don't try to stat anything as it will cause
252 * a crash when we access fp.
253 */
254 if (IS_ERR(fp)) {
255 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
256 "fp has IS_ERR() set.\n");
257 goto skip_stat;
258 }
259
260 /* Log stats for FLOGI reject */
261 if (fc_frame_payload_op(fp) == ELS_LS_RJT)
262 qedf->flogi_failed++;
Chad Dupuisa3cd42a92017-08-15 10:08:17 -0700263 else if (fc_frame_payload_op(fp) == ELS_LS_ACC) {
264 /* Set the source MAC we will use for FCoE traffic */
265 qedf_set_data_src_addr(qedf, fp);
266 }
Dupuis, Chad61d86582017-02-15 06:28:23 -0800267
268 /* Complete flogi_compl so we can proceed to sending ADISCs */
269 complete(&qedf->flogi_compl);
270
271skip_stat:
272 /* Report response to libfc */
273 fc_lport_flogi_resp(seq, fp, lport);
274}
275
276static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did,
277 struct fc_frame *fp, unsigned int op,
278 void (*resp)(struct fc_seq *,
279 struct fc_frame *,
280 void *),
281 void *arg, u32 timeout)
282{
283 struct qedf_ctx *qedf = lport_priv(lport);
284
285 /*
286 * Intercept FLOGI for statistic purposes. Note we use the resp
287 * callback to tell if this is really a flogi.
288 */
289 if (resp == fc_lport_flogi_resp) {
290 qedf->flogi_cnt++;
291 return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp,
292 arg, timeout);
293 }
294
295 return fc_elsct_send(lport, did, fp, op, resp, arg, timeout);
296}
297
298int qedf_send_flogi(struct qedf_ctx *qedf)
299{
300 struct fc_lport *lport;
301 struct fc_frame *fp;
302
303 lport = qedf->lport;
304
305 if (!lport->tt.elsct_send)
306 return -EINVAL;
307
308 fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi));
309 if (!fp) {
310 QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n");
311 return -ENOMEM;
312 }
313
314 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS,
315 "Sending FLOGI to reestablish session with switch.\n");
316 lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
317 ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov);
318
319 init_completion(&qedf->flogi_compl);
320
321 return 0;
322}
323
324struct qedf_tmp_rdata_item {
325 struct fc_rport_priv *rdata;
326 struct list_head list;
327};
328
329/*
330 * This function is called if link_down_tmo is in use. If we get a link up and
331 * link_down_tmo has not expired then use just FLOGI/ADISC to recover our
332 * sessions with targets. Otherwise, just call fcoe_ctlr_link_up().
333 */
334static void qedf_link_recovery(struct work_struct *work)
335{
336 struct qedf_ctx *qedf =
337 container_of(work, struct qedf_ctx, link_recovery.work);
338 struct qedf_rport *fcport;
339 struct fc_rport_priv *rdata;
340 struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item;
341 bool rc;
342 int retries = 30;
343 int rval, i;
344 struct list_head rdata_login_list;
345
346 INIT_LIST_HEAD(&rdata_login_list);
347
348 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
349 "Link down tmo did not expire.\n");
350
351 /*
352 * Essentially reset the fcoe_ctlr here without affecting the state
353 * of the libfc structs.
354 */
355 qedf->ctlr.state = FIP_ST_LINK_WAIT;
356 fcoe_ctlr_link_down(&qedf->ctlr);
357
358 /*
359 * Bring the link up before we send the fipvlan request so libfcoe
360 * can select a new fcf in parallel
361 */
362 fcoe_ctlr_link_up(&qedf->ctlr);
363
364 /* Since the link when down and up to verify which vlan we're on */
365 qedf->fipvlan_retries = qedf_fipvlan_retries;
366 rc = qedf_initiate_fipvlan_req(qedf);
Chad Dupuiscf291162017-08-15 10:08:18 -0700367 /* If getting the VLAN fails, set the VLAN to the fallback one */
Dupuis, Chad61d86582017-02-15 06:28:23 -0800368 if (!rc)
Chad Dupuiscf291162017-08-15 10:08:18 -0700369 qedf_set_vlan_id(qedf, qedf_fallback_vlan);
Dupuis, Chad61d86582017-02-15 06:28:23 -0800370
371 /*
372 * We need to wait for an FCF to be selected due to the
373 * fcoe_ctlr_link_up other the FLOGI will be rejected.
374 */
375 while (retries > 0) {
376 if (qedf->ctlr.sel_fcf) {
377 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
378 "FCF reselected, proceeding with FLOGI.\n");
379 break;
380 }
381 msleep(500);
382 retries--;
383 }
384
385 if (retries < 1) {
386 QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for "
387 "FCF selection.\n");
388 return;
389 }
390
391 rval = qedf_send_flogi(qedf);
392 if (rval)
393 return;
394
395 /* Wait for FLOGI completion before proceeding with sending ADISCs */
396 i = wait_for_completion_timeout(&qedf->flogi_compl,
397 qedf->lport->r_a_tov);
398 if (i == 0) {
399 QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n");
400 return;
401 }
402
403 /*
404 * Call lport->tt.rport_login which will cause libfc to send an
405 * ADISC since the rport is in state ready.
406 */
407 rcu_read_lock();
408 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
409 rdata = fcport->rdata;
410 if (rdata == NULL)
411 continue;
412 rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item),
413 GFP_ATOMIC);
414 if (!rdata_item)
415 continue;
416 if (kref_get_unless_zero(&rdata->kref)) {
417 rdata_item->rdata = rdata;
418 list_add(&rdata_item->list, &rdata_login_list);
419 } else
420 kfree(rdata_item);
421 }
422 rcu_read_unlock();
423 /*
424 * Do the fc_rport_login outside of the rcu lock so we don't take a
425 * mutex in an atomic context.
426 */
427 list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list,
428 list) {
429 list_del(&rdata_item->list);
430 fc_rport_login(rdata_item->rdata);
431 kref_put(&rdata_item->rdata->kref, fc_rport_destroy);
432 kfree(rdata_item);
433 }
434}
435
436static void qedf_update_link_speed(struct qedf_ctx *qedf,
437 struct qed_link_output *link)
438{
439 struct fc_lport *lport = qedf->lport;
440
441 lport->link_speed = FC_PORTSPEED_UNKNOWN;
442 lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN;
443
444 /* Set fc_host link speed */
445 switch (link->speed) {
446 case 10000:
447 lport->link_speed = FC_PORTSPEED_10GBIT;
448 break;
449 case 25000:
450 lport->link_speed = FC_PORTSPEED_25GBIT;
451 break;
452 case 40000:
453 lport->link_speed = FC_PORTSPEED_40GBIT;
454 break;
455 case 50000:
456 lport->link_speed = FC_PORTSPEED_50GBIT;
457 break;
458 case 100000:
459 lport->link_speed = FC_PORTSPEED_100GBIT;
460 break;
461 default:
462 lport->link_speed = FC_PORTSPEED_UNKNOWN;
463 break;
464 }
465
466 /*
467 * Set supported link speed by querying the supported
468 * capabilities of the link.
469 */
470 if (link->supported_caps & SUPPORTED_10000baseKR_Full)
471 lport->link_supported_speeds |= FC_PORTSPEED_10GBIT;
472 if (link->supported_caps & SUPPORTED_25000baseKR_Full)
473 lport->link_supported_speeds |= FC_PORTSPEED_25GBIT;
474 if (link->supported_caps & SUPPORTED_40000baseLR4_Full)
475 lport->link_supported_speeds |= FC_PORTSPEED_40GBIT;
476 if (link->supported_caps & SUPPORTED_50000baseKR2_Full)
477 lport->link_supported_speeds |= FC_PORTSPEED_50GBIT;
478 if (link->supported_caps & SUPPORTED_100000baseKR4_Full)
479 lport->link_supported_speeds |= FC_PORTSPEED_100GBIT;
480 fc_host_supported_speeds(lport->host) = lport->link_supported_speeds;
481}
482
483static void qedf_link_update(void *dev, struct qed_link_output *link)
484{
485 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
486
487 if (link->link_up) {
488 QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n",
489 link->speed / 1000);
490
491 /* Cancel any pending link down work */
492 cancel_delayed_work(&qedf->link_update);
493
494 atomic_set(&qedf->link_state, QEDF_LINK_UP);
495 qedf_update_link_speed(qedf, link);
496
Chad Dupuisba17d372018-04-25 06:08:51 -0700497 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE ||
498 qedf_dcbx_no_wait) {
Chad Dupuisf7e8d572017-05-31 06:33:59 -0700499 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
500 "DCBx done.\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -0800501 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
502 queue_delayed_work(qedf->link_update_wq,
503 &qedf->link_recovery, 0);
504 else
505 queue_delayed_work(qedf->link_update_wq,
506 &qedf->link_update, 0);
507 atomic_set(&qedf->link_down_tmo_valid, 0);
508 }
509
510 } else {
511 QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n");
512
513 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
514 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
515 /*
516 * Flag that we're waiting for the link to come back up before
517 * informing the fcoe layer of the event.
518 */
519 if (qedf_link_down_tmo > 0) {
520 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
521 "Starting link down tmo.\n");
522 atomic_set(&qedf->link_down_tmo_valid, 1);
523 }
524 qedf->vlan_id = 0;
525 qedf_update_link_speed(qedf, link);
526 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
527 qedf_link_down_tmo * HZ);
528 }
529}
530
531
532static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type)
533{
534 struct qedf_ctx *qedf = (struct qedf_ctx *)dev;
535
536 QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe "
537 "prio=%d.\n", get->operational.valid, get->operational.enabled,
538 get->operational.app_prio.fcoe);
539
540 if (get->operational.enabled && get->operational.valid) {
541 /* If DCBX was already negotiated on link up then just exit */
542 if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) {
543 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
544 "DCBX already set on link up.\n");
545 return;
546 }
547
548 atomic_set(&qedf->dcbx, QEDF_DCBX_DONE);
549
Chad Dupuisba17d372018-04-25 06:08:51 -0700550 if (atomic_read(&qedf->link_state) == QEDF_LINK_UP &&
551 !qedf_dcbx_no_wait) {
Dupuis, Chad61d86582017-02-15 06:28:23 -0800552 if (atomic_read(&qedf->link_down_tmo_valid) > 0)
553 queue_delayed_work(qedf->link_update_wq,
554 &qedf->link_recovery, 0);
555 else
556 queue_delayed_work(qedf->link_update_wq,
557 &qedf->link_update, 0);
558 atomic_set(&qedf->link_down_tmo_valid, 0);
559 }
560 }
561
562}
563
564static u32 qedf_get_login_failures(void *cookie)
565{
566 struct qedf_ctx *qedf;
567
568 qedf = (struct qedf_ctx *)cookie;
569 return qedf->flogi_failed;
570}
571
572static struct qed_fcoe_cb_ops qedf_cb_ops = {
573 {
574 .link_update = qedf_link_update,
575 .dcbx_aen = qedf_dcbx_handler,
576 }
577};
578
579/*
580 * Various transport templates.
581 */
582
583static struct scsi_transport_template *qedf_fc_transport_template;
584static struct scsi_transport_template *qedf_fc_vport_transport_template;
585
586/*
587 * SCSI EH handlers
588 */
589static int qedf_eh_abort(struct scsi_cmnd *sc_cmd)
590{
591 struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device));
592 struct fc_rport_libfc_priv *rp = rport->dd_data;
593 struct qedf_rport *fcport;
594 struct fc_lport *lport;
595 struct qedf_ctx *qedf;
596 struct qedf_ioreq *io_req;
597 int rc = FAILED;
598 int rval;
599
600 if (fc_remote_port_chkready(rport)) {
601 QEDF_ERR(NULL, "rport not ready\n");
602 goto out;
603 }
604
605 lport = shost_priv(sc_cmd->device->host);
606 qedf = (struct qedf_ctx *)lport_priv(lport);
607
608 if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) {
609 QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n");
610 goto out;
611 }
612
613 fcport = (struct qedf_rport *)&rp[1];
614
615 io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr;
616 if (!io_req) {
617 QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n");
618 rc = SUCCESS;
619 goto out;
620 }
621
622 if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) ||
623 test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) ||
624 test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) {
625 QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in "
626 "cleanup or abort processing or already "
627 "completed.\n", io_req->xid);
628 rc = SUCCESS;
629 goto out;
630 }
631
632 QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x "
633 "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx);
634
635 if (qedf->stop_io_on_error) {
636 qedf_stop_all_io(qedf);
637 rc = SUCCESS;
638 goto out;
639 }
640
641 init_completion(&io_req->abts_done);
642 rval = qedf_initiate_abts(io_req, true);
643 if (rval) {
644 QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n");
645 goto out;
646 }
647
648 wait_for_completion(&io_req->abts_done);
649
650 if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS ||
651 io_req->event == QEDF_IOREQ_EV_ABORT_FAILED ||
652 io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) {
653 /*
654 * If we get a reponse to the abort this is success from
655 * the perspective that all references to the command have
656 * been removed from the driver and firmware
657 */
658 rc = SUCCESS;
659 } else {
660 /* If the abort and cleanup failed then return a failure */
661 rc = FAILED;
662 }
663
664 if (rc == SUCCESS)
665 QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n",
666 io_req->xid);
667 else
668 QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n",
669 io_req->xid);
670
671out:
672 return rc;
673}
674
675static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd)
676{
677 QEDF_ERR(NULL, "TARGET RESET Issued...");
678 return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET);
679}
680
681static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd)
682{
683 QEDF_ERR(NULL, "LUN RESET Issued...\n");
684 return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET);
685}
686
687void qedf_wait_for_upload(struct qedf_ctx *qedf)
688{
689 while (1) {
690 if (atomic_read(&qedf->num_offloads))
691 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
692 "Waiting for all uploads to complete.\n");
693 else
694 break;
695 msleep(500);
696 }
697}
698
Chad Dupuis5cf446d2017-05-31 06:33:55 -0700699/* Performs soft reset of qedf_ctx by simulating a link down/up */
700static void qedf_ctx_soft_reset(struct fc_lport *lport)
Dupuis, Chad61d86582017-02-15 06:28:23 -0800701{
Dupuis, Chad61d86582017-02-15 06:28:23 -0800702 struct qedf_ctx *qedf;
703
Dupuis, Chad61d86582017-02-15 06:28:23 -0800704 if (lport->vport) {
705 QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n");
Chad Dupuis5cf446d2017-05-31 06:33:55 -0700706 return;
Dupuis, Chad61d86582017-02-15 06:28:23 -0800707 }
708
Chad Dupuis5cf446d2017-05-31 06:33:55 -0700709 qedf = lport_priv(lport);
Dupuis, Chad61d86582017-02-15 06:28:23 -0800710
711 /* For host reset, essentially do a soft link up/down */
712 atomic_set(&qedf->link_state, QEDF_LINK_DOWN);
713 atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING);
714 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
715 0);
716 qedf_wait_for_upload(qedf);
717 atomic_set(&qedf->link_state, QEDF_LINK_UP);
718 qedf->vlan_id = 0;
719 queue_delayed_work(qedf->link_update_wq, &qedf->link_update,
720 0);
Chad Dupuis5cf446d2017-05-31 06:33:55 -0700721}
722
723/* Reset the host by gracefully logging out and then logging back in */
724static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd)
725{
726 struct fc_lport *lport;
727 struct qedf_ctx *qedf;
728
729 lport = shost_priv(sc_cmd->device->host);
730 qedf = lport_priv(lport);
731
732 if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN ||
733 test_bit(QEDF_UNLOADING, &qedf->flags))
734 return FAILED;
735
736 QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued...");
737
738 qedf_ctx_soft_reset(lport);
Dupuis, Chad61d86582017-02-15 06:28:23 -0800739
740 return SUCCESS;
741}
742
743static int qedf_slave_configure(struct scsi_device *sdev)
744{
745 if (qedf_queue_depth) {
746 scsi_change_queue_depth(sdev, qedf_queue_depth);
747 }
748
749 return 0;
750}
751
752static struct scsi_host_template qedf_host_template = {
753 .module = THIS_MODULE,
754 .name = QEDF_MODULE_NAME,
755 .this_id = -1,
Chad Dupuisa7746f12017-05-31 06:34:00 -0700756 .cmd_per_lun = 32,
Dupuis, Chad61d86582017-02-15 06:28:23 -0800757 .use_clustering = ENABLE_CLUSTERING,
758 .max_sectors = 0xffff,
759 .queuecommand = qedf_queuecommand,
760 .shost_attrs = qedf_host_attrs,
761 .eh_abort_handler = qedf_eh_abort,
762 .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */
763 .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */
764 .eh_host_reset_handler = qedf_eh_host_reset,
765 .slave_configure = qedf_slave_configure,
766 .dma_boundary = QED_HW_DMA_BOUNDARY,
767 .sg_tablesize = QEDF_MAX_BDS_PER_CMD,
768 .can_queue = FCOE_PARAMS_NUM_TASKS,
Chad Dupuis6088cfa2017-05-31 06:34:01 -0700769 .change_queue_depth = scsi_change_queue_depth,
Dupuis, Chad61d86582017-02-15 06:28:23 -0800770};
771
772static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen)
773{
774 int rc;
775
776 spin_lock(&qedf_global_lock);
777 rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global);
778 spin_unlock(&qedf_global_lock);
779
780 return rc;
781}
782
783static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id)
784{
785 struct qedf_rport *fcport;
786 struct fc_rport_priv *rdata;
787
788 rcu_read_lock();
789 list_for_each_entry_rcu(fcport, &qedf->fcports, peers) {
790 rdata = fcport->rdata;
791 if (rdata == NULL)
792 continue;
793 if (rdata->ids.port_id == port_id) {
794 rcu_read_unlock();
795 return fcport;
796 }
797 }
798 rcu_read_unlock();
799
800 /* Return NULL to caller to let them know fcport was not found */
801 return NULL;
802}
803
804/* Transmits an ELS frame over an offloaded session */
805static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp)
806{
807 struct fc_frame_header *fh;
808 int rc = 0;
809
810 fh = fc_frame_header_get(fp);
811 if ((fh->fh_type == FC_TYPE_ELS) &&
812 (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
813 switch (fc_frame_payload_op(fp)) {
814 case ELS_ADISC:
815 qedf_send_adisc(fcport, fp);
816 rc = 1;
817 break;
818 }
819 }
820
821 return rc;
822}
823
824/**
825 * qedf_xmit - qedf FCoE frame transmit function
826 *
827 */
828static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp)
829{
830 struct fc_lport *base_lport;
831 struct qedf_ctx *qedf;
832 struct ethhdr *eh;
833 struct fcoe_crc_eof *cp;
834 struct sk_buff *skb;
835 struct fc_frame_header *fh;
836 struct fcoe_hdr *hp;
837 u8 sof, eof;
838 u32 crc;
839 unsigned int hlen, tlen, elen;
840 int wlen;
841 struct fc_stats *stats;
842 struct fc_lport *tmp_lport;
843 struct fc_lport *vn_port = NULL;
844 struct qedf_rport *fcport;
845 int rc;
846 u16 vlan_tci = 0;
847
848 qedf = (struct qedf_ctx *)lport_priv(lport);
849
850 fh = fc_frame_header_get(fp);
851 skb = fp_skb(fp);
852
853 /* Filter out traffic to other NPIV ports on the same host */
854 if (lport->vport)
855 base_lport = shost_priv(vport_to_shost(lport->vport));
856 else
857 base_lport = lport;
858
859 /* Flag if the destination is the base port */
860 if (base_lport->port_id == ntoh24(fh->fh_d_id)) {
861 vn_port = base_lport;
862 } else {
863 /* Got through the list of vports attached to the base_lport
864 * and see if we have a match with the destination address.
865 */
866 list_for_each_entry(tmp_lport, &base_lport->vports, list) {
867 if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) {
868 vn_port = tmp_lport;
869 break;
870 }
871 }
872 }
873 if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) {
874 struct fc_rport_priv *rdata = NULL;
875
876 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
877 "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id));
878 kfree_skb(skb);
879 rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id));
880 if (rdata)
881 rdata->retries = lport->max_rport_retry_count;
882 return -EINVAL;
883 }
884 /* End NPIV filtering */
885
886 if (!qedf->ctlr.sel_fcf) {
887 kfree_skb(skb);
888 return 0;
889 }
890
891 if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) {
892 QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n");
893 kfree_skb(skb);
894 return 0;
895 }
896
897 if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) {
898 QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n");
899 kfree_skb(skb);
900 return 0;
901 }
902
903 if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) {
904 if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb))
905 return 0;
906 }
907
908 /* Check to see if this needs to be sent on an offloaded session */
909 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
910
911 if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
912 rc = qedf_xmit_l2_frame(fcport, fp);
913 /*
914 * If the frame was successfully sent over the middle path
915 * then do not try to also send it over the LL2 path
916 */
917 if (rc)
918 return 0;
919 }
920
921 sof = fr_sof(fp);
922 eof = fr_eof(fp);
923
924 elen = sizeof(struct ethhdr);
925 hlen = sizeof(struct fcoe_hdr);
926 tlen = sizeof(struct fcoe_crc_eof);
927 wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE;
928
929 skb->ip_summed = CHECKSUM_NONE;
930 crc = fcoe_fc_crc(fp);
931
932 /* copy port crc and eof to the skb buff */
933 if (skb_is_nonlinear(skb)) {
934 skb_frag_t *frag;
935
936 if (qedf_get_paged_crc_eof(skb, tlen)) {
937 kfree_skb(skb);
938 return -ENOMEM;
939 }
940 frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1];
941 cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset;
942 } else {
Johannes Berg4df864c2017-06-16 14:29:21 +0200943 cp = skb_put(skb, tlen);
Dupuis, Chad61d86582017-02-15 06:28:23 -0800944 }
945
946 memset(cp, 0, sizeof(*cp));
947 cp->fcoe_eof = eof;
948 cp->fcoe_crc32 = cpu_to_le32(~crc);
949 if (skb_is_nonlinear(skb)) {
950 kunmap_atomic(cp);
951 cp = NULL;
952 }
953
954
955 /* adjust skb network/transport offsets to match mac/fcoe/port */
956 skb_push(skb, elen + hlen);
957 skb_reset_mac_header(skb);
958 skb_reset_network_header(skb);
959 skb->mac_len = elen;
960 skb->protocol = htons(ETH_P_FCOE);
961
Chad Dupuiscf291162017-08-15 10:08:18 -0700962 /*
963 * Add VLAN tag to non-offload FCoE frame based on current stored VLAN
964 * for FIP/FCoE traffic.
965 */
Dupuis, Chad61d86582017-02-15 06:28:23 -0800966 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id);
967
968 /* fill up mac and fcoe headers */
969 eh = eth_hdr(skb);
970 eh->h_proto = htons(ETH_P_FCOE);
971 if (qedf->ctlr.map_dest)
972 fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id);
973 else
974 /* insert GW address */
975 ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr);
976
977 /* Set the source MAC address */
Chad Dupuisa3cd42a92017-08-15 10:08:17 -0700978 ether_addr_copy(eh->h_source, qedf->data_src_addr);
Dupuis, Chad61d86582017-02-15 06:28:23 -0800979
980 hp = (struct fcoe_hdr *)(eh + 1);
981 memset(hp, 0, sizeof(*hp));
982 if (FC_FCOE_VER)
983 FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER);
984 hp->fcoe_sof = sof;
985
986 /*update tx stats */
987 stats = per_cpu_ptr(lport->stats, get_cpu());
988 stats->TxFrames++;
989 stats->TxWords += wlen;
990 put_cpu();
991
992 /* Get VLAN ID from skb for printing purposes */
993 __vlan_hwaccel_get_tag(skb, &vlan_tci);
994
995 /* send down to lld */
996 fr_dev(fp) = lport;
997 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: "
998 "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n",
999 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type,
1000 vlan_tci);
1001 if (qedf_dump_frames)
1002 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
1003 1, skb->data, skb->len, false);
1004 qed_ops->ll2->start_xmit(qedf->cdev, skb);
1005
1006 return 0;
1007}
1008
1009static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1010{
1011 int rval = 0;
1012 u32 *pbl;
1013 dma_addr_t page;
1014 int num_pages;
1015
1016 /* Calculate appropriate queue and PBL sizes */
1017 fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
1018 fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE);
1019 fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) *
1020 sizeof(void *);
1021 fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE;
1022
Christophe JAILLETc4d6ffc2017-06-11 08:16:03 +02001023 fcport->sq = dma_zalloc_coherent(&qedf->pdev->dev,
1024 fcport->sq_mem_size, &fcport->sq_dma, GFP_KERNEL);
Dupuis, Chad61d86582017-02-15 06:28:23 -08001025 if (!fcport->sq) {
Christophe JAILLET32eebb32017-06-11 08:16:04 +02001026 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -08001027 rval = 1;
1028 goto out;
1029 }
Dupuis, Chad61d86582017-02-15 06:28:23 -08001030
Christophe JAILLETc4d6ffc2017-06-11 08:16:03 +02001031 fcport->sq_pbl = dma_zalloc_coherent(&qedf->pdev->dev,
Dupuis, Chad61d86582017-02-15 06:28:23 -08001032 fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL);
1033 if (!fcport->sq_pbl) {
Christophe JAILLET32eebb32017-06-11 08:16:04 +02001034 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -08001035 rval = 1;
1036 goto out_free_sq;
1037 }
Dupuis, Chad61d86582017-02-15 06:28:23 -08001038
1039 /* Create PBL */
1040 num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE;
1041 page = fcport->sq_dma;
1042 pbl = (u32 *)fcport->sq_pbl;
1043
1044 while (num_pages--) {
1045 *pbl = U64_LO(page);
1046 pbl++;
1047 *pbl = U64_HI(page);
1048 pbl++;
1049 page += QEDF_PAGE_SIZE;
1050 }
1051
1052 return rval;
1053
1054out_free_sq:
1055 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq,
1056 fcport->sq_dma);
1057out:
1058 return rval;
1059}
1060
1061static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport)
1062{
1063 if (fcport->sq_pbl)
1064 dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size,
1065 fcport->sq_pbl, fcport->sq_pbl_dma);
1066 if (fcport->sq)
1067 dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size,
1068 fcport->sq, fcport->sq_dma);
1069}
1070
1071static int qedf_offload_connection(struct qedf_ctx *qedf,
1072 struct qedf_rport *fcport)
1073{
1074 struct qed_fcoe_params_offload conn_info;
1075 u32 port_id;
Dupuis, Chad61d86582017-02-15 06:28:23 -08001076 int rval;
1077 uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe));
1078
1079 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection "
1080 "portid=%06x.\n", fcport->rdata->ids.port_id);
1081 rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle,
1082 &fcport->fw_cid, &fcport->p_doorbell);
1083 if (rval) {
1084 QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection "
1085 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1086 rval = 1; /* For some reason qed returns 0 on failure here */
1087 goto out;
1088 }
1089
1090 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x "
1091 "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id,
1092 fcport->fw_cid, fcport->handle);
1093
1094 memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload));
1095
1096 /* Fill in the offload connection info */
1097 conn_info.sq_pbl_addr = fcport->sq_pbl_dma;
1098
1099 conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl);
1100 conn_info.sq_next_page_addr =
1101 (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8));
1102
1103 /* Need to use our FCoE MAC for the offload session */
Chad Dupuisa3cd42a92017-08-15 10:08:17 -07001104 ether_addr_copy(conn_info.src_mac, qedf->data_src_addr);
Dupuis, Chad61d86582017-02-15 06:28:23 -08001105
1106 ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr);
1107
1108 conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size;
1109 conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20;
1110 conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */
1111 conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size;
1112
1113 /* Set VLAN data */
1114 conn_info.vlan_tag = qedf->vlan_id <<
1115 FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT;
1116 conn_info.vlan_tag |=
1117 qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT;
1118 conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK <<
1119 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT);
1120
1121 /* Set host port source id */
1122 port_id = fc_host_port_id(qedf->lport->host);
1123 fcport->sid = port_id;
1124 conn_info.s_id.addr_hi = (port_id & 0x000000FF);
1125 conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1126 conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1127
1128 conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq;
1129
1130 /* Set remote port destination id */
1131 port_id = fcport->rdata->rport->port_id;
1132 conn_info.d_id.addr_hi = (port_id & 0x000000FF);
1133 conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8;
1134 conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16;
1135
1136 conn_info.def_q_idx = 0; /* Default index for send queue? */
1137
1138 /* Set FC-TAPE specific flags if needed */
1139 if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) {
1140 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN,
1141 "Enable CONF, REC for portid=%06x.\n",
1142 fcport->rdata->ids.port_id);
1143 conn_info.flags |= 1 <<
1144 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT;
1145 conn_info.flags |=
1146 ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) <<
1147 FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT;
1148 }
1149
1150 rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info);
1151 if (rval) {
1152 QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection "
1153 "for portid=%06x.\n", fcport->rdata->ids.port_id);
1154 goto out_free_conn;
1155 } else
1156 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload "
1157 "succeeded portid=%06x total_sqe=%d.\n",
1158 fcport->rdata->ids.port_id, total_sqe);
1159
1160 spin_lock_init(&fcport->rport_lock);
1161 atomic_set(&fcport->free_sqes, total_sqe);
1162 return 0;
1163out_free_conn:
1164 qed_ops->release_conn(qedf->cdev, fcport->handle);
1165out:
1166 return rval;
1167}
1168
1169#define QEDF_TERM_BUFF_SIZE 10
1170static void qedf_upload_connection(struct qedf_ctx *qedf,
1171 struct qedf_rport *fcport)
1172{
1173 void *term_params;
1174 dma_addr_t term_params_dma;
1175
1176 /* Term params needs to be a DMA coherent buffer as qed shared the
1177 * physical DMA address with the firmware. The buffer may be used in
1178 * the receive path so we may eventually have to move this.
1179 */
1180 term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE,
1181 &term_params_dma, GFP_KERNEL);
1182
1183 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection "
1184 "port_id=%06x.\n", fcport->rdata->ids.port_id);
1185
1186 qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma);
1187 qed_ops->release_conn(qedf->cdev, fcport->handle);
1188
1189 dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params,
1190 term_params_dma);
1191}
1192
1193static void qedf_cleanup_fcport(struct qedf_ctx *qedf,
1194 struct qedf_rport *fcport)
1195{
1196 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n",
1197 fcport->rdata->ids.port_id);
1198
1199 /* Flush any remaining i/o's before we upload the connection */
1200 qedf_flush_active_ios(fcport, -1);
1201
1202 if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags))
1203 qedf_upload_connection(qedf, fcport);
1204 qedf_free_sq(qedf, fcport);
1205 fcport->rdata = NULL;
1206 fcport->qedf = NULL;
1207}
1208
1209/**
1210 * This event_callback is called after successful completion of libfc
1211 * initiated target login. qedf can proceed with initiating the session
1212 * establishment.
1213 */
1214static void qedf_rport_event_handler(struct fc_lport *lport,
1215 struct fc_rport_priv *rdata,
1216 enum fc_rport_event event)
1217{
1218 struct qedf_ctx *qedf = lport_priv(lport);
1219 struct fc_rport *rport = rdata->rport;
1220 struct fc_rport_libfc_priv *rp;
1221 struct qedf_rport *fcport;
1222 u32 port_id;
1223 int rval;
1224 unsigned long flags;
1225
1226 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, "
1227 "port_id = 0x%x\n", event, rdata->ids.port_id);
1228
1229 switch (event) {
1230 case RPORT_EV_READY:
1231 if (!rport) {
1232 QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n");
1233 break;
1234 }
1235
1236 rp = rport->dd_data;
1237 fcport = (struct qedf_rport *)&rp[1];
1238 fcport->qedf = qedf;
1239
1240 if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) {
1241 QEDF_ERR(&(qedf->dbg_ctx), "Not offloading "
1242 "portid=0x%x as max number of offloaded sessions "
1243 "reached.\n", rdata->ids.port_id);
1244 return;
1245 }
1246
1247 /*
1248 * Don't try to offload the session again. Can happen when we
1249 * get an ADISC
1250 */
1251 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1252 QEDF_WARN(&(qedf->dbg_ctx), "Session already "
1253 "offloaded, portid=0x%x.\n",
1254 rdata->ids.port_id);
1255 return;
1256 }
1257
1258 if (rport->port_id == FC_FID_DIR_SERV) {
1259 /*
1260 * qedf_rport structure doesn't exist for
1261 * directory server.
1262 * We should not come here, as lport will
1263 * take care of fabric login
1264 */
1265 QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not "
1266 "exist for dir server port_id=%x\n",
1267 rdata->ids.port_id);
1268 break;
1269 }
1270
1271 if (rdata->spp_type != FC_TYPE_FCP) {
1272 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
Colin Ian Kingacef2692017-07-03 20:21:39 +01001273 "Not offloading since spp type isn't FCP\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -08001274 break;
1275 }
1276 if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) {
1277 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1278 "Not FCP target so not offloading\n");
1279 break;
1280 }
1281
1282 fcport->rdata = rdata;
1283 fcport->rport = rport;
1284
1285 rval = qedf_alloc_sq(qedf, fcport);
1286 if (rval) {
1287 qedf_cleanup_fcport(qedf, fcport);
1288 break;
1289 }
1290
1291 /* Set device type */
1292 if (rdata->flags & FC_RP_FLAGS_RETRY &&
1293 rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET &&
1294 !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) {
1295 fcport->dev_type = QEDF_RPORT_TYPE_TAPE;
1296 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1297 "portid=%06x is a TAPE device.\n",
1298 rdata->ids.port_id);
1299 } else {
1300 fcport->dev_type = QEDF_RPORT_TYPE_DISK;
1301 }
1302
1303 rval = qedf_offload_connection(qedf, fcport);
1304 if (rval) {
1305 qedf_cleanup_fcport(qedf, fcport);
1306 break;
1307 }
1308
1309 /* Add fcport to list of qedf_ctx list of offloaded ports */
1310 spin_lock_irqsave(&qedf->hba_lock, flags);
1311 list_add_rcu(&fcport->peers, &qedf->fcports);
1312 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1313
1314 /*
1315 * Set the session ready bit to let everyone know that this
1316 * connection is ready for I/O
1317 */
1318 set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags);
1319 atomic_inc(&qedf->num_offloads);
1320
1321 break;
1322 case RPORT_EV_LOGO:
1323 case RPORT_EV_FAILED:
1324 case RPORT_EV_STOP:
1325 port_id = rdata->ids.port_id;
1326 if (port_id == FC_FID_DIR_SERV)
1327 break;
1328
1329 if (!rport) {
1330 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
1331 "port_id=%x - rport notcreated Yet!!\n", port_id);
1332 break;
1333 }
1334 rp = rport->dd_data;
1335 /*
1336 * Perform session upload. Note that rdata->peers is already
1337 * removed from disc->rports list before we get this event.
1338 */
1339 fcport = (struct qedf_rport *)&rp[1];
1340
1341 /* Only free this fcport if it is offloaded already */
1342 if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
1343 set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags);
1344 qedf_cleanup_fcport(qedf, fcport);
1345
1346 /*
1347 * Remove fcport to list of qedf_ctx list of offloaded
1348 * ports
1349 */
1350 spin_lock_irqsave(&qedf->hba_lock, flags);
1351 list_del_rcu(&fcport->peers);
1352 spin_unlock_irqrestore(&qedf->hba_lock, flags);
1353
1354 clear_bit(QEDF_RPORT_UPLOADING_CONNECTION,
1355 &fcport->flags);
1356 atomic_dec(&qedf->num_offloads);
1357 }
1358
1359 break;
1360
1361 case RPORT_EV_NONE:
1362 break;
1363 }
1364}
1365
1366static void qedf_abort_io(struct fc_lport *lport)
1367{
1368 /* NO-OP but need to fill in the template */
1369}
1370
1371static void qedf_fcp_cleanup(struct fc_lport *lport)
1372{
1373 /*
1374 * NO-OP but need to fill in template to prevent a NULL
1375 * function pointer dereference during link down. I/Os
1376 * will be flushed when port is uploaded.
1377 */
1378}
1379
1380static struct libfc_function_template qedf_lport_template = {
1381 .frame_send = qedf_xmit,
1382 .fcp_abort_io = qedf_abort_io,
1383 .fcp_cleanup = qedf_fcp_cleanup,
1384 .rport_event_callback = qedf_rport_event_handler,
1385 .elsct_send = qedf_elsct_send,
1386};
1387
1388static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf)
1389{
1390 fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO);
1391
1392 qedf->ctlr.send = qedf_fip_send;
Dupuis, Chad61d86582017-02-15 06:28:23 -08001393 qedf->ctlr.get_src_addr = qedf_get_src_mac;
1394 ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac);
1395}
1396
Chad Dupuis5185b322017-05-31 06:33:48 -07001397static void qedf_setup_fdmi(struct qedf_ctx *qedf)
1398{
1399 struct fc_lport *lport = qedf->lport;
1400 struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host);
1401 u8 buf[8];
1402 int i, pos;
1403
1404 /*
1405 * fdmi_enabled needs to be set for libfc to execute FDMI registration.
1406 */
1407 lport->fdmi_enabled = 1;
1408
1409 /*
1410 * Setup the necessary fc_host attributes to that will be used to fill
1411 * in the FDMI information.
1412 */
1413
1414 /* Get the PCI-e Device Serial Number Capability */
1415 pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN);
1416 if (pos) {
1417 pos += 4;
1418 for (i = 0; i < 8; i++)
1419 pci_read_config_byte(qedf->pdev, pos + i, &buf[i]);
1420
1421 snprintf(fc_host->serial_number,
1422 sizeof(fc_host->serial_number),
1423 "%02X%02X%02X%02X%02X%02X%02X%02X",
1424 buf[7], buf[6], buf[5], buf[4],
1425 buf[3], buf[2], buf[1], buf[0]);
1426 } else
1427 snprintf(fc_host->serial_number,
1428 sizeof(fc_host->serial_number), "Unknown");
1429
1430 snprintf(fc_host->manufacturer,
1431 sizeof(fc_host->manufacturer), "%s", "Cavium Inc.");
1432
1433 snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000");
1434
1435 snprintf(fc_host->model_description, sizeof(fc_host->model_description),
1436 "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller"
1437 "(FCoE)");
1438
1439 snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version),
1440 "Rev %d", qedf->pdev->revision);
1441
1442 snprintf(fc_host->driver_version, sizeof(fc_host->driver_version),
1443 "%s", QEDF_VERSION);
1444
1445 snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version),
1446 "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION,
1447 FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
1448}
1449
Dupuis, Chad61d86582017-02-15 06:28:23 -08001450static int qedf_lport_setup(struct qedf_ctx *qedf)
1451{
1452 struct fc_lport *lport = qedf->lport;
1453
1454 lport->link_up = 0;
1455 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1456 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1457 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1458 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1459 lport->boot_time = jiffies;
1460 lport->e_d_tov = 2 * 1000;
1461 lport->r_a_tov = 10 * 1000;
1462
1463 /* Set NPIV support */
1464 lport->does_npiv = 1;
1465 fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV;
1466
1467 fc_set_wwnn(lport, qedf->wwnn);
1468 fc_set_wwpn(lport, qedf->wwpn);
1469
1470 fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0);
1471
1472 /* Allocate the exchange manager */
1473 fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1,
1474 qedf->max_els_xid, NULL);
1475
1476 if (fc_lport_init_stats(lport))
1477 return -ENOMEM;
1478
1479 /* Finish lport config */
1480 fc_lport_config(lport);
1481
1482 /* Set max frame size */
1483 fc_set_mfs(lport, QEDF_MFS);
1484 fc_host_maxframe_size(lport->host) = lport->mfs;
1485
1486 /* Set default dev_loss_tmo based on module parameter */
1487 fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo;
1488
1489 /* Set symbolic node name */
1490 snprintf(fc_host_symbolic_name(lport->host), 256,
1491 "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION);
1492
Chad Dupuis5185b322017-05-31 06:33:48 -07001493 qedf_setup_fdmi(qedf);
1494
Dupuis, Chad61d86582017-02-15 06:28:23 -08001495 return 0;
1496}
1497
1498/*
1499 * NPIV functions
1500 */
1501
1502static int qedf_vport_libfc_config(struct fc_vport *vport,
1503 struct fc_lport *lport)
1504{
1505 lport->link_up = 0;
1506 lport->qfull = 0;
1507 lport->max_retry_count = QEDF_FLOGI_RETRY_CNT;
1508 lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT;
1509 lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS |
1510 FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL);
1511 lport->boot_time = jiffies;
1512 lport->e_d_tov = 2 * 1000;
1513 lport->r_a_tov = 10 * 1000;
1514 lport->does_npiv = 1; /* Temporary until we add NPIV support */
1515
1516 /* Allocate stats for vport */
1517 if (fc_lport_init_stats(lport))
1518 return -ENOMEM;
1519
1520 /* Finish lport config */
1521 fc_lport_config(lport);
1522
1523 /* offload related configuration */
1524 lport->crc_offload = 0;
1525 lport->seq_offload = 0;
1526 lport->lro_enabled = 0;
1527 lport->lro_xid = 0;
1528 lport->lso_max = 0;
1529
1530 return 0;
1531}
1532
1533static int qedf_vport_create(struct fc_vport *vport, bool disabled)
1534{
1535 struct Scsi_Host *shost = vport_to_shost(vport);
1536 struct fc_lport *n_port = shost_priv(shost);
1537 struct fc_lport *vn_port;
1538 struct qedf_ctx *base_qedf = lport_priv(n_port);
1539 struct qedf_ctx *vport_qedf;
1540
1541 char buf[32];
1542 int rc = 0;
1543
1544 rc = fcoe_validate_vport_create(vport);
1545 if (rc) {
1546 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1547 QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, "
1548 "WWPN (0x%s) already exists.\n", buf);
1549 goto err1;
1550 }
1551
1552 if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) {
1553 QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport "
1554 "because link is not up.\n");
1555 rc = -EIO;
1556 goto err1;
1557 }
1558
1559 vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx));
1560 if (!vn_port) {
1561 QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport "
1562 "for vport.\n");
1563 rc = -ENOMEM;
1564 goto err1;
1565 }
1566
1567 fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf));
1568 QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n",
1569 buf);
1570
1571 /* Copy some fields from base_qedf */
1572 vport_qedf = lport_priv(vn_port);
1573 memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx));
1574
1575 /* Set qedf data specific to this vport */
1576 vport_qedf->lport = vn_port;
1577 /* Use same hba_lock as base_qedf */
1578 vport_qedf->hba_lock = base_qedf->hba_lock;
1579 vport_qedf->pdev = base_qedf->pdev;
1580 vport_qedf->cmd_mgr = base_qedf->cmd_mgr;
1581 init_completion(&vport_qedf->flogi_compl);
1582 INIT_LIST_HEAD(&vport_qedf->fcports);
1583
1584 rc = qedf_vport_libfc_config(vport, vn_port);
1585 if (rc) {
1586 QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory "
1587 "for lport stats.\n");
1588 goto err2;
1589 }
1590
1591 fc_set_wwnn(vn_port, vport->node_name);
1592 fc_set_wwpn(vn_port, vport->port_name);
1593 vport_qedf->wwnn = vn_port->wwnn;
1594 vport_qedf->wwpn = vn_port->wwpn;
1595
1596 vn_port->host->transportt = qedf_fc_vport_transport_template;
1597 vn_port->host->can_queue = QEDF_MAX_ELS_XID;
1598 vn_port->host->max_lun = qedf_max_lun;
1599 vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD;
1600 vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN;
1601
1602 rc = scsi_add_host(vn_port->host, &vport->dev);
1603 if (rc) {
1604 QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n");
1605 goto err2;
1606 }
1607
1608 /* Set default dev_loss_tmo based on module parameter */
1609 fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo;
1610
1611 /* Init libfc stuffs */
1612 memcpy(&vn_port->tt, &qedf_lport_template,
1613 sizeof(qedf_lport_template));
1614 fc_exch_init(vn_port);
1615 fc_elsct_init(vn_port);
1616 fc_lport_init(vn_port);
1617 fc_disc_init(vn_port);
1618 fc_disc_config(vn_port, vn_port);
1619
1620
1621 /* Allocate the exchange manager */
1622 shost = vport_to_shost(vport);
1623 n_port = shost_priv(shost);
1624 fc_exch_mgr_list_clone(n_port, vn_port);
1625
1626 /* Set max frame size */
1627 fc_set_mfs(vn_port, QEDF_MFS);
1628
1629 fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN;
1630
1631 if (disabled) {
1632 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1633 } else {
1634 vn_port->boot_time = jiffies;
1635 fc_fabric_login(vn_port);
1636 fc_vport_setlink(vn_port);
1637 }
1638
1639 QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n",
1640 vn_port);
1641
1642 /* Set up debug context for vport */
1643 vport_qedf->dbg_ctx.host_no = vn_port->host->host_no;
1644 vport_qedf->dbg_ctx.pdev = base_qedf->pdev;
1645
1646err2:
1647 scsi_host_put(vn_port->host);
1648err1:
1649 return rc;
1650}
1651
1652static int qedf_vport_destroy(struct fc_vport *vport)
1653{
1654 struct Scsi_Host *shost = vport_to_shost(vport);
1655 struct fc_lport *n_port = shost_priv(shost);
1656 struct fc_lport *vn_port = vport->dd_data;
1657
1658 mutex_lock(&n_port->lp_mutex);
1659 list_del(&vn_port->list);
1660 mutex_unlock(&n_port->lp_mutex);
1661
1662 fc_fabric_logoff(vn_port);
1663 fc_lport_destroy(vn_port);
1664
1665 /* Detach from scsi-ml */
1666 fc_remove_host(vn_port->host);
1667 scsi_remove_host(vn_port->host);
1668
1669 /*
1670 * Only try to release the exchange manager if the vn_port
1671 * configuration is complete.
1672 */
1673 if (vn_port->state == LPORT_ST_READY)
1674 fc_exch_mgr_free(vn_port);
1675
1676 /* Free memory used by statistical counters */
1677 fc_lport_free_stats(vn_port);
1678
1679 /* Release Scsi_Host */
1680 if (vn_port->host)
1681 scsi_host_put(vn_port->host);
1682
1683 return 0;
1684}
1685
1686static int qedf_vport_disable(struct fc_vport *vport, bool disable)
1687{
1688 struct fc_lport *lport = vport->dd_data;
1689
1690 if (disable) {
1691 fc_vport_set_state(vport, FC_VPORT_DISABLED);
1692 fc_fabric_logoff(lport);
1693 } else {
1694 lport->boot_time = jiffies;
1695 fc_fabric_login(lport);
1696 fc_vport_setlink(lport);
1697 }
1698 return 0;
1699}
1700
1701/*
1702 * During removal we need to wait for all the vports associated with a port
1703 * to be destroyed so we avoid a race condition where libfc is still trying
1704 * to reap vports while the driver remove function has already reaped the
1705 * driver contexts associated with the physical port.
1706 */
1707static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf)
1708{
1709 struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host);
1710
1711 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1712 "Entered.\n");
1713 while (fc_host->npiv_vports_inuse > 0) {
1714 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV,
1715 "Waiting for all vports to be reaped.\n");
1716 msleep(1000);
1717 }
1718}
1719
1720/**
1721 * qedf_fcoe_reset - Resets the fcoe
1722 *
1723 * @shost: shost the reset is from
1724 *
1725 * Returns: always 0
1726 */
1727static int qedf_fcoe_reset(struct Scsi_Host *shost)
1728{
1729 struct fc_lport *lport = shost_priv(shost);
1730
Chad Dupuis5cf446d2017-05-31 06:33:55 -07001731 qedf_ctx_soft_reset(lport);
Dupuis, Chad61d86582017-02-15 06:28:23 -08001732 return 0;
1733}
1734
1735static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host
1736 *shost)
1737{
1738 struct fc_host_statistics *qedf_stats;
1739 struct fc_lport *lport = shost_priv(shost);
1740 struct qedf_ctx *qedf = lport_priv(lport);
1741 struct qed_fcoe_stats *fw_fcoe_stats;
1742
1743 qedf_stats = fc_get_host_stats(shost);
1744
1745 /* We don't collect offload stats for specific NPIV ports */
1746 if (lport->vport)
1747 goto out;
1748
1749 fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL);
1750 if (!fw_fcoe_stats) {
1751 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for "
1752 "fw_fcoe_stats.\n");
1753 goto out;
1754 }
1755
1756 /* Query firmware for offload stats */
1757 qed_ops->get_stats(qedf->cdev, fw_fcoe_stats);
1758
1759 /*
1760 * The expectation is that we add our offload stats to the stats
1761 * being maintained by libfc each time the fc_get_host_status callback
1762 * is invoked. The additions are not carried over for each call to
1763 * the fc_get_host_stats callback.
1764 */
1765 qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt +
1766 fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt +
1767 fw_fcoe_stats->fcoe_tx_other_pkt_cnt;
1768 qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt +
1769 fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt +
1770 fw_fcoe_stats->fcoe_rx_other_pkt_cnt;
1771 qedf_stats->fcp_input_megabytes +=
1772 do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000);
1773 qedf_stats->fcp_output_megabytes +=
1774 do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000);
1775 qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4;
1776 qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4;
1777 qedf_stats->invalid_crc_count +=
1778 fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt;
1779 qedf_stats->dumped_frames =
1780 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1781 qedf_stats->error_frames +=
1782 fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt;
1783 qedf_stats->fcp_input_requests += qedf->input_requests;
1784 qedf_stats->fcp_output_requests += qedf->output_requests;
1785 qedf_stats->fcp_control_requests += qedf->control_requests;
1786 qedf_stats->fcp_packet_aborts += qedf->packet_aborts;
1787 qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures;
1788
1789 kfree(fw_fcoe_stats);
1790out:
1791 return qedf_stats;
1792}
1793
1794static struct fc_function_template qedf_fc_transport_fn = {
1795 .show_host_node_name = 1,
1796 .show_host_port_name = 1,
1797 .show_host_supported_classes = 1,
1798 .show_host_supported_fc4s = 1,
1799 .show_host_active_fc4s = 1,
1800 .show_host_maxframe_size = 1,
1801
1802 .show_host_port_id = 1,
1803 .show_host_supported_speeds = 1,
1804 .get_host_speed = fc_get_host_speed,
1805 .show_host_speed = 1,
1806 .show_host_port_type = 1,
1807 .get_host_port_state = fc_get_host_port_state,
1808 .show_host_port_state = 1,
1809 .show_host_symbolic_name = 1,
1810
1811 /*
1812 * Tell FC transport to allocate enough space to store the backpointer
1813 * for the associate qedf_rport struct.
1814 */
1815 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1816 sizeof(struct qedf_rport)),
1817 .show_rport_maxframe_size = 1,
1818 .show_rport_supported_classes = 1,
1819 .show_host_fabric_name = 1,
1820 .show_starget_node_name = 1,
1821 .show_starget_port_name = 1,
1822 .show_starget_port_id = 1,
1823 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1824 .show_rport_dev_loss_tmo = 1,
1825 .get_fc_host_stats = qedf_fc_get_host_stats,
1826 .issue_fc_host_lip = qedf_fcoe_reset,
1827 .vport_create = qedf_vport_create,
1828 .vport_delete = qedf_vport_destroy,
1829 .vport_disable = qedf_vport_disable,
1830 .bsg_request = fc_lport_bsg_request,
1831};
1832
1833static struct fc_function_template qedf_fc_vport_transport_fn = {
1834 .show_host_node_name = 1,
1835 .show_host_port_name = 1,
1836 .show_host_supported_classes = 1,
1837 .show_host_supported_fc4s = 1,
1838 .show_host_active_fc4s = 1,
1839 .show_host_maxframe_size = 1,
1840 .show_host_port_id = 1,
1841 .show_host_supported_speeds = 1,
1842 .get_host_speed = fc_get_host_speed,
1843 .show_host_speed = 1,
1844 .show_host_port_type = 1,
1845 .get_host_port_state = fc_get_host_port_state,
1846 .show_host_port_state = 1,
1847 .show_host_symbolic_name = 1,
1848 .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) +
1849 sizeof(struct qedf_rport)),
1850 .show_rport_maxframe_size = 1,
1851 .show_rport_supported_classes = 1,
1852 .show_host_fabric_name = 1,
1853 .show_starget_node_name = 1,
1854 .show_starget_port_name = 1,
1855 .show_starget_port_id = 1,
1856 .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo,
1857 .show_rport_dev_loss_tmo = 1,
1858 .get_fc_host_stats = fc_get_host_stats,
1859 .issue_fc_host_lip = qedf_fcoe_reset,
1860 .bsg_request = fc_lport_bsg_request,
1861};
1862
1863static bool qedf_fp_has_work(struct qedf_fastpath *fp)
1864{
1865 struct qedf_ctx *qedf = fp->qedf;
1866 struct global_queue *que;
1867 struct qed_sb_info *sb_info = fp->sb_info;
Tomer Tayar21dd79e2017-12-27 19:30:06 +02001868 struct status_block_e4 *sb = sb_info->sb_virt;
Dupuis, Chad61d86582017-02-15 06:28:23 -08001869 u16 prod_idx;
1870
1871 /* Get the pointer to the global CQ this completion is on */
1872 que = qedf->global_queues[fp->sb_id];
1873
1874 /* Be sure all responses have been written to PI */
1875 rmb();
1876
1877 /* Get the current firmware producer index */
1878 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1879
1880 return (que->cq_prod_idx != prod_idx);
1881}
1882
1883/*
1884 * Interrupt handler code.
1885 */
1886
1887/* Process completion queue and copy CQE contents for deferred processesing
1888 *
1889 * Return true if we should wake the I/O thread, false if not.
1890 */
1891static bool qedf_process_completions(struct qedf_fastpath *fp)
1892{
1893 struct qedf_ctx *qedf = fp->qedf;
1894 struct qed_sb_info *sb_info = fp->sb_info;
Tomer Tayar21dd79e2017-12-27 19:30:06 +02001895 struct status_block_e4 *sb = sb_info->sb_virt;
Dupuis, Chad61d86582017-02-15 06:28:23 -08001896 struct global_queue *que;
1897 u16 prod_idx;
1898 struct fcoe_cqe *cqe;
1899 struct qedf_io_work *io_work;
1900 int num_handled = 0;
1901 unsigned int cpu;
1902 struct qedf_ioreq *io_req = NULL;
1903 u16 xid;
1904 u16 new_cqes;
1905 u32 comp_type;
1906
1907 /* Get the current firmware producer index */
1908 prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI];
1909
1910 /* Get the pointer to the global CQ this completion is on */
1911 que = qedf->global_queues[fp->sb_id];
1912
1913 /* Calculate the amount of new elements since last processing */
1914 new_cqes = (prod_idx >= que->cq_prod_idx) ?
1915 (prod_idx - que->cq_prod_idx) :
1916 0x10000 - que->cq_prod_idx + prod_idx;
1917
1918 /* Save producer index */
1919 que->cq_prod_idx = prod_idx;
1920
1921 while (new_cqes) {
1922 fp->completions++;
1923 num_handled++;
1924 cqe = &que->cq[que->cq_cons_idx];
1925
1926 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
1927 FCOE_CQE_CQE_TYPE_MASK;
1928
1929 /*
1930 * Process unsolicited CQEs directly in the interrupt handler
1931 * sine we need the fastpath ID
1932 */
1933 if (comp_type == FCOE_UNSOLIC_CQE_TYPE) {
1934 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL,
1935 "Unsolicated CQE.\n");
1936 qedf_process_unsol_compl(qedf, fp->sb_id, cqe);
1937 /*
1938 * Don't add a work list item. Increment consumer
1939 * consumer index and move on.
1940 */
1941 goto inc_idx;
1942 }
1943
1944 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
1945 io_req = &qedf->cmd_mgr->cmds[xid];
1946
1947 /*
1948 * Figure out which percpu thread we should queue this I/O
1949 * on.
1950 */
1951 if (!io_req)
1952 /* If there is not io_req assocated with this CQE
1953 * just queue it on CPU 0
1954 */
1955 cpu = 0;
1956 else {
1957 cpu = io_req->cpu;
1958 io_req->int_cpu = smp_processor_id();
1959 }
1960
1961 io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC);
1962 if (!io_work) {
1963 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate "
1964 "work for I/O completion.\n");
1965 continue;
1966 }
1967 memset(io_work, 0, sizeof(struct qedf_io_work));
1968
1969 INIT_WORK(&io_work->work, qedf_fp_io_handler);
1970
1971 /* Copy contents of CQE for deferred processing */
1972 memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe));
1973
1974 io_work->qedf = fp->qedf;
1975 io_work->fp = NULL; /* Only used for unsolicited frames */
1976
1977 queue_work_on(cpu, qedf_io_wq, &io_work->work);
1978
1979inc_idx:
1980 que->cq_cons_idx++;
1981 if (que->cq_cons_idx == fp->cq_num_entries)
1982 que->cq_cons_idx = 0;
1983 new_cqes--;
1984 }
1985
1986 return true;
1987}
1988
1989
1990/* MSI-X fastpath handler code */
1991static irqreturn_t qedf_msix_handler(int irq, void *dev_id)
1992{
1993 struct qedf_fastpath *fp = dev_id;
1994
1995 if (!fp) {
1996 QEDF_ERR(NULL, "fp is null.\n");
1997 return IRQ_HANDLED;
1998 }
1999 if (!fp->sb_info) {
2000 QEDF_ERR(NULL, "fp->sb_info in null.");
2001 return IRQ_HANDLED;
2002 }
2003
2004 /*
2005 * Disable interrupts for this status block while we process new
2006 * completions
2007 */
2008 qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/);
2009
2010 while (1) {
2011 qedf_process_completions(fp);
2012
2013 if (qedf_fp_has_work(fp) == 0) {
2014 /* Update the sb information */
2015 qed_sb_update_sb_idx(fp->sb_info);
2016
2017 /* Check for more work */
2018 rmb();
2019
2020 if (qedf_fp_has_work(fp) == 0) {
2021 /* Re-enable interrupts */
2022 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
2023 return IRQ_HANDLED;
2024 }
2025 }
2026 }
2027
2028 /* Do we ever want to break out of above loop? */
2029 return IRQ_HANDLED;
2030}
2031
2032/* simd handler for MSI/INTa */
2033static void qedf_simd_int_handler(void *cookie)
2034{
2035 /* Cookie is qedf_ctx struct */
2036 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2037
2038 QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf);
2039}
2040
2041#define QEDF_SIMD_HANDLER_NUM 0
2042static void qedf_sync_free_irqs(struct qedf_ctx *qedf)
2043{
2044 int i;
2045
2046 if (qedf->int_info.msix_cnt) {
2047 for (i = 0; i < qedf->int_info.used_cnt; i++) {
2048 synchronize_irq(qedf->int_info.msix[i].vector);
2049 irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2050 NULL);
2051 irq_set_affinity_notifier(qedf->int_info.msix[i].vector,
2052 NULL);
2053 free_irq(qedf->int_info.msix[i].vector,
2054 &qedf->fp_array[i]);
2055 }
2056 } else
2057 qed_ops->common->simd_handler_clean(qedf->cdev,
2058 QEDF_SIMD_HANDLER_NUM);
2059
2060 qedf->int_info.used_cnt = 0;
2061 qed_ops->common->set_fp_int(qedf->cdev, 0);
2062}
2063
2064static int qedf_request_msix_irq(struct qedf_ctx *qedf)
2065{
2066 int i, rc, cpu;
2067
2068 cpu = cpumask_first(cpu_online_mask);
2069 for (i = 0; i < qedf->num_queues; i++) {
2070 rc = request_irq(qedf->int_info.msix[i].vector,
2071 qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]);
2072
2073 if (rc) {
2074 QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n");
2075 qedf_sync_free_irqs(qedf);
2076 return rc;
2077 }
2078
2079 qedf->int_info.used_cnt++;
2080 rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector,
2081 get_cpu_mask(cpu));
2082 cpu = cpumask_next(cpu, cpu_online_mask);
2083 }
2084
2085 return 0;
2086}
2087
2088static int qedf_setup_int(struct qedf_ctx *qedf)
2089{
2090 int rc = 0;
2091
2092 /*
2093 * Learn interrupt configuration
2094 */
2095 rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus());
Chad Dupuis914fff12017-05-31 06:33:50 -07002096 if (rc <= 0)
2097 return 0;
Dupuis, Chad61d86582017-02-15 06:28:23 -08002098
2099 rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info);
2100 if (rc)
2101 return 0;
2102
2103 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = "
2104 "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt,
2105 num_online_cpus());
2106
2107 if (qedf->int_info.msix_cnt)
2108 return qedf_request_msix_irq(qedf);
2109
2110 qed_ops->common->simd_handler_config(qedf->cdev, &qedf,
2111 QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler);
2112 qedf->int_info.used_cnt = 1;
2113
2114 return 0;
2115}
2116
2117/* Main function for libfc frame reception */
2118static void qedf_recv_frame(struct qedf_ctx *qedf,
2119 struct sk_buff *skb)
2120{
2121 u32 fr_len;
2122 struct fc_lport *lport;
2123 struct fc_frame_header *fh;
2124 struct fcoe_crc_eof crc_eof;
2125 struct fc_frame *fp;
2126 u8 *mac = NULL;
2127 u8 *dest_mac = NULL;
2128 struct fcoe_hdr *hp;
2129 struct qedf_rport *fcport;
Chad Dupuis384d5a92017-05-31 06:33:57 -07002130 struct fc_lport *vn_port;
2131 u32 f_ctl;
Dupuis, Chad61d86582017-02-15 06:28:23 -08002132
2133 lport = qedf->lport;
2134 if (lport == NULL || lport->state == LPORT_ST_DISABLED) {
2135 QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n");
2136 kfree_skb(skb);
2137 return;
2138 }
2139
2140 if (skb_is_nonlinear(skb))
2141 skb_linearize(skb);
2142 mac = eth_hdr(skb)->h_source;
2143 dest_mac = eth_hdr(skb)->h_dest;
2144
2145 /* Pull the header */
2146 hp = (struct fcoe_hdr *)skb->data;
2147 fh = (struct fc_frame_header *) skb_transport_header(skb);
2148 skb_pull(skb, sizeof(struct fcoe_hdr));
2149 fr_len = skb->len - sizeof(struct fcoe_crc_eof);
2150
2151 fp = (struct fc_frame *)skb;
2152 fc_frame_init(fp);
2153 fr_dev(fp) = lport;
2154 fr_sof(fp) = hp->fcoe_sof;
2155 if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) {
2156 kfree_skb(skb);
2157 return;
2158 }
2159 fr_eof(fp) = crc_eof.fcoe_eof;
2160 fr_crc(fp) = crc_eof.fcoe_crc32;
2161 if (pskb_trim(skb, fr_len)) {
2162 kfree_skb(skb);
2163 return;
2164 }
2165
2166 fh = fc_frame_header_get(fp);
2167
Chad Dupuis384d5a92017-05-31 06:33:57 -07002168 /*
2169 * Invalid frame filters.
2170 */
2171
Dupuis, Chad61d86582017-02-15 06:28:23 -08002172 if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA &&
2173 fh->fh_type == FC_TYPE_FCP) {
2174 /* Drop FCP data. We dont this in L2 path */
2175 kfree_skb(skb);
2176 return;
2177 }
2178 if (fh->fh_r_ctl == FC_RCTL_ELS_REQ &&
2179 fh->fh_type == FC_TYPE_ELS) {
2180 switch (fc_frame_payload_op(fp)) {
2181 case ELS_LOGO:
2182 if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) {
2183 /* drop non-FIP LOGO */
2184 kfree_skb(skb);
2185 return;
2186 }
2187 break;
2188 }
2189 }
2190
2191 if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) {
2192 /* Drop incoming ABTS */
2193 kfree_skb(skb);
2194 return;
2195 }
2196
Chad Dupuis384d5a92017-05-31 06:33:57 -07002197 if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) {
Chad Dupuisf7e8d572017-05-31 06:33:59 -07002198 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2199 "FC frame d_id mismatch with MAC %pM.\n", dest_mac);
Chad Dupuisf32803b2018-04-25 06:08:47 -07002200 kfree_skb(skb);
Chad Dupuis384d5a92017-05-31 06:33:57 -07002201 return;
2202 }
2203
2204 if (qedf->ctlr.state) {
2205 if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) {
Chad Dupuisf7e8d572017-05-31 06:33:59 -07002206 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2207 "Wrong source address: mac:%pM dest_addr:%pM.\n",
Chad Dupuis384d5a92017-05-31 06:33:57 -07002208 mac, qedf->ctlr.dest_addr);
2209 kfree_skb(skb);
2210 return;
2211 }
2212 }
2213
2214 vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id));
2215
2216 /*
2217 * If the destination ID from the frame header does not match what we
2218 * have on record for lport and the search for a NPIV port came up
2219 * empty then this is not addressed to our port so simply drop it.
2220 */
2221 if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) {
Chad Dupuisf7e8d572017-05-31 06:33:59 -07002222 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2223 "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n",
Chad Dupuis384d5a92017-05-31 06:33:57 -07002224 lport->port_id, ntoh24(fh->fh_d_id));
2225 kfree_skb(skb);
2226 return;
2227 }
2228
2229 f_ctl = ntoh24(fh->fh_f_ctl);
2230 if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) &&
2231 (f_ctl & FC_FC_EX_CTX)) {
2232 /* Drop incoming ABTS response that has both SEQ/EX CTX set */
2233 kfree_skb(skb);
2234 return;
2235 }
2236
Dupuis, Chad61d86582017-02-15 06:28:23 -08002237 /*
2238 * If a connection is uploading, drop incoming FCoE frames as there
2239 * is a small window where we could try to return a frame while libfc
2240 * is trying to clean things up.
2241 */
2242
2243 /* Get fcport associated with d_id if it exists */
2244 fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id));
2245
2246 if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION,
2247 &fcport->flags)) {
2248 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2,
2249 "Connection uploading, dropping fp=%p.\n", fp);
2250 kfree_skb(skb);
2251 return;
2252 }
2253
2254 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: "
2255 "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp,
2256 ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl,
2257 fh->fh_type);
2258 if (qedf_dump_frames)
2259 print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16,
2260 1, skb->data, skb->len, false);
2261 fc_exch_recv(lport, fp);
2262}
2263
2264static void qedf_ll2_process_skb(struct work_struct *work)
2265{
2266 struct qedf_skb_work *skb_work =
2267 container_of(work, struct qedf_skb_work, work);
2268 struct qedf_ctx *qedf = skb_work->qedf;
2269 struct sk_buff *skb = skb_work->skb;
2270 struct ethhdr *eh;
2271
2272 if (!qedf) {
2273 QEDF_ERR(NULL, "qedf is NULL\n");
2274 goto err_out;
2275 }
2276
2277 eh = (struct ethhdr *)skb->data;
2278
2279 /* Undo VLAN encapsulation */
2280 if (eh->h_proto == htons(ETH_P_8021Q)) {
2281 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
Johannes Bergaf728682017-06-16 14:29:22 +02002282 eh = skb_pull(skb, VLAN_HLEN);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002283 skb_reset_mac_header(skb);
2284 }
2285
2286 /*
2287 * Process either a FIP frame or FCoE frame based on the
2288 * protocol value. If it's not either just drop the
2289 * frame.
2290 */
2291 if (eh->h_proto == htons(ETH_P_FIP)) {
2292 qedf_fip_recv(qedf, skb);
2293 goto out;
2294 } else if (eh->h_proto == htons(ETH_P_FCOE)) {
2295 __skb_pull(skb, ETH_HLEN);
2296 qedf_recv_frame(qedf, skb);
2297 goto out;
2298 } else
2299 goto err_out;
2300
2301err_out:
2302 kfree_skb(skb);
2303out:
2304 kfree(skb_work);
2305 return;
2306}
2307
2308static int qedf_ll2_rx(void *cookie, struct sk_buff *skb,
2309 u32 arg1, u32 arg2)
2310{
2311 struct qedf_ctx *qedf = (struct qedf_ctx *)cookie;
2312 struct qedf_skb_work *skb_work;
2313
2314 skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC);
2315 if (!skb_work) {
2316 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so "
2317 "dropping frame.\n");
2318 kfree_skb(skb);
2319 return 0;
2320 }
2321
2322 INIT_WORK(&skb_work->work, qedf_ll2_process_skb);
2323 skb_work->skb = skb;
2324 skb_work->qedf = qedf;
2325 queue_work(qedf->ll2_recv_wq, &skb_work->work);
2326
2327 return 0;
2328}
2329
2330static struct qed_ll2_cb_ops qedf_ll2_cb_ops = {
2331 .rx_cb = qedf_ll2_rx,
2332 .tx_cb = NULL,
2333};
2334
2335/* Main thread to process I/O completions */
2336void qedf_fp_io_handler(struct work_struct *work)
2337{
2338 struct qedf_io_work *io_work =
2339 container_of(work, struct qedf_io_work, work);
2340 u32 comp_type;
2341
2342 /*
2343 * Deferred part of unsolicited CQE sends
2344 * frame to libfc.
2345 */
2346 comp_type = (io_work->cqe.cqe_data >>
2347 FCOE_CQE_CQE_TYPE_SHIFT) &
2348 FCOE_CQE_CQE_TYPE_MASK;
2349 if (comp_type == FCOE_UNSOLIC_CQE_TYPE &&
2350 io_work->fp)
2351 fc_exch_recv(io_work->qedf->lport, io_work->fp);
2352 else
2353 qedf_process_cqe(io_work->qedf, &io_work->cqe);
2354
2355 kfree(io_work);
2356}
2357
2358static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf,
2359 struct qed_sb_info *sb_info, u16 sb_id)
2360{
Tomer Tayar21dd79e2017-12-27 19:30:06 +02002361 struct status_block_e4 *sb_virt;
Dupuis, Chad61d86582017-02-15 06:28:23 -08002362 dma_addr_t sb_phys;
2363 int ret;
2364
2365 sb_virt = dma_alloc_coherent(&qedf->pdev->dev,
Tomer Tayar21dd79e2017-12-27 19:30:06 +02002366 sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002367
2368 if (!sb_virt) {
2369 QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed "
2370 "for id = %d.\n", sb_id);
2371 return -ENOMEM;
2372 }
2373
2374 ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys,
2375 sb_id, QED_SB_TYPE_STORAGE);
2376
2377 if (ret) {
2378 QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization "
2379 "failed for id = %d.\n", sb_id);
2380 return ret;
2381 }
2382
2383 return 0;
2384}
2385
2386static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info)
2387{
2388 if (sb_info->sb_virt)
2389 dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt),
2390 (void *)sb_info->sb_virt, sb_info->sb_phys);
2391}
2392
2393static void qedf_destroy_sb(struct qedf_ctx *qedf)
2394{
2395 int id;
2396 struct qedf_fastpath *fp = NULL;
2397
2398 for (id = 0; id < qedf->num_queues; id++) {
2399 fp = &(qedf->fp_array[id]);
2400 if (fp->sb_id == QEDF_SB_ID_NULL)
2401 break;
2402 qedf_free_sb(qedf, fp->sb_info);
2403 kfree(fp->sb_info);
2404 }
2405 kfree(qedf->fp_array);
2406}
2407
2408static int qedf_prepare_sb(struct qedf_ctx *qedf)
2409{
2410 int id;
2411 struct qedf_fastpath *fp;
2412 int ret;
2413
2414 qedf->fp_array =
2415 kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath),
2416 GFP_KERNEL);
2417
2418 if (!qedf->fp_array) {
2419 QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation "
2420 "failed.\n");
2421 return -ENOMEM;
2422 }
2423
2424 for (id = 0; id < qedf->num_queues; id++) {
2425 fp = &(qedf->fp_array[id]);
2426 fp->sb_id = QEDF_SB_ID_NULL;
2427 fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL);
2428 if (!fp->sb_info) {
2429 QEDF_ERR(&(qedf->dbg_ctx), "SB info struct "
2430 "allocation failed.\n");
2431 goto err;
2432 }
2433 ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id);
2434 if (ret) {
2435 QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and "
2436 "initialization failed.\n");
2437 goto err;
2438 }
2439 fp->sb_id = id;
2440 fp->qedf = qedf;
2441 fp->cq_num_entries =
2442 qedf->global_queues[id]->cq_mem_size /
2443 sizeof(struct fcoe_cqe);
2444 }
2445err:
2446 return 0;
2447}
2448
2449void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe)
2450{
2451 u16 xid;
2452 struct qedf_ioreq *io_req;
2453 struct qedf_rport *fcport;
2454 u32 comp_type;
2455
2456 comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) &
2457 FCOE_CQE_CQE_TYPE_MASK;
2458
2459 xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK;
2460 io_req = &qedf->cmd_mgr->cmds[xid];
2461
2462 /* Completion not for a valid I/O anymore so just return */
2463 if (!io_req)
2464 return;
2465
2466 fcport = io_req->fcport;
2467
2468 if (fcport == NULL) {
2469 QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n");
2470 return;
2471 }
2472
2473 /*
2474 * Check that fcport is offloaded. If it isn't then the spinlock
2475 * isn't valid and shouldn't be taken. We should just return.
2476 */
2477 if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) {
2478 QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n");
2479 return;
2480 }
2481
2482
2483 switch (comp_type) {
2484 case FCOE_GOOD_COMPLETION_CQE_TYPE:
2485 atomic_inc(&fcport->free_sqes);
2486 switch (io_req->cmd_type) {
2487 case QEDF_SCSI_CMD:
2488 qedf_scsi_completion(qedf, cqe, io_req);
2489 break;
2490 case QEDF_ELS:
2491 qedf_process_els_compl(qedf, cqe, io_req);
2492 break;
2493 case QEDF_TASK_MGMT_CMD:
2494 qedf_process_tmf_compl(qedf, cqe, io_req);
2495 break;
2496 case QEDF_SEQ_CLEANUP:
2497 qedf_process_seq_cleanup_compl(qedf, cqe, io_req);
2498 break;
2499 }
2500 break;
2501 case FCOE_ERROR_DETECTION_CQE_TYPE:
2502 atomic_inc(&fcport->free_sqes);
2503 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2504 "Error detect CQE.\n");
2505 qedf_process_error_detect(qedf, cqe, io_req);
2506 break;
2507 case FCOE_EXCH_CLEANUP_CQE_TYPE:
2508 atomic_inc(&fcport->free_sqes);
2509 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2510 "Cleanup CQE.\n");
2511 qedf_process_cleanup_compl(qedf, cqe, io_req);
2512 break;
2513 case FCOE_ABTS_CQE_TYPE:
2514 atomic_inc(&fcport->free_sqes);
2515 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2516 "Abort CQE.\n");
2517 qedf_process_abts_compl(qedf, cqe, io_req);
2518 break;
2519 case FCOE_DUMMY_CQE_TYPE:
2520 atomic_inc(&fcport->free_sqes);
2521 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2522 "Dummy CQE.\n");
2523 break;
2524 case FCOE_LOCAL_COMP_CQE_TYPE:
2525 atomic_inc(&fcport->free_sqes);
2526 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2527 "Local completion CQE.\n");
2528 break;
2529 case FCOE_WARNING_CQE_TYPE:
2530 atomic_inc(&fcport->free_sqes);
2531 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2532 "Warning CQE.\n");
2533 qedf_process_warning_compl(qedf, cqe, io_req);
2534 break;
2535 case MAX_FCOE_CQE_TYPE:
2536 atomic_inc(&fcport->free_sqes);
2537 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2538 "Max FCoE CQE.\n");
2539 break;
2540 default:
2541 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO,
2542 "Default CQE.\n");
2543 break;
2544 }
2545}
2546
2547static void qedf_free_bdq(struct qedf_ctx *qedf)
2548{
2549 int i;
2550
2551 if (qedf->bdq_pbl_list)
2552 dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE,
2553 qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma);
2554
2555 if (qedf->bdq_pbl)
2556 dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size,
2557 qedf->bdq_pbl, qedf->bdq_pbl_dma);
2558
2559 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2560 if (qedf->bdq[i].buf_addr) {
2561 dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE,
2562 qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma);
2563 }
2564 }
2565}
2566
2567static void qedf_free_global_queues(struct qedf_ctx *qedf)
2568{
2569 int i;
2570 struct global_queue **gl = qedf->global_queues;
2571
2572 for (i = 0; i < qedf->num_queues; i++) {
2573 if (!gl[i])
2574 continue;
2575
2576 if (gl[i]->cq)
2577 dma_free_coherent(&qedf->pdev->dev,
2578 gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma);
2579 if (gl[i]->cq_pbl)
2580 dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size,
2581 gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
2582
2583 kfree(gl[i]);
2584 }
2585
2586 qedf_free_bdq(qedf);
2587}
2588
2589static int qedf_alloc_bdq(struct qedf_ctx *qedf)
2590{
2591 int i;
2592 struct scsi_bd *pbl;
2593 u64 *list;
2594 dma_addr_t page;
2595
2596 /* Alloc dma memory for BDQ buffers */
2597 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2598 qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev,
2599 QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL);
2600 if (!qedf->bdq[i].buf_addr) {
2601 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ "
2602 "buffer %d.\n", i);
2603 return -ENOMEM;
2604 }
2605 }
2606
2607 /* Alloc dma memory for BDQ page buffer list */
2608 qedf->bdq_pbl_mem_size =
2609 QEDF_BDQ_SIZE * sizeof(struct scsi_bd);
2610 qedf->bdq_pbl_mem_size =
2611 ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE);
2612
2613 qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev,
2614 qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL);
2615 if (!qedf->bdq_pbl) {
2616 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n");
2617 return -ENOMEM;
2618 }
2619
2620 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
Joe Perchesfd2b18b2017-03-06 10:32:27 -08002621 "BDQ PBL addr=0x%p dma=%pad\n",
2622 qedf->bdq_pbl, &qedf->bdq_pbl_dma);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002623
2624 /*
2625 * Populate BDQ PBL with physical and virtual address of individual
2626 * BDQ buffers
2627 */
2628 pbl = (struct scsi_bd *)qedf->bdq_pbl;
2629 for (i = 0; i < QEDF_BDQ_SIZE; i++) {
2630 pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma));
2631 pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma));
Tomer Tayarda090912017-12-27 19:30:07 +02002632 pbl->opaque.fcoe_opaque.hi = 0;
Dupuis, Chad61d86582017-02-15 06:28:23 -08002633 /* Opaque lo data is an index into the BDQ array */
Tomer Tayarda090912017-12-27 19:30:07 +02002634 pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002635 pbl++;
2636 }
2637
2638 /* Allocate list of PBL pages */
Christophe JAILLETc4d6ffc2017-06-11 08:16:03 +02002639 qedf->bdq_pbl_list = dma_zalloc_coherent(&qedf->pdev->dev,
Dupuis, Chad61d86582017-02-15 06:28:23 -08002640 QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL);
2641 if (!qedf->bdq_pbl_list) {
Christophe JAILLET32eebb32017-06-11 08:16:04 +02002642 QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -08002643 return -ENOMEM;
2644 }
Dupuis, Chad61d86582017-02-15 06:28:23 -08002645
2646 /*
2647 * Now populate PBL list with pages that contain pointers to the
2648 * individual buffers.
2649 */
2650 qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size /
2651 QEDF_PAGE_SIZE;
2652 list = (u64 *)qedf->bdq_pbl_list;
2653 page = qedf->bdq_pbl_list_dma;
2654 for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) {
2655 *list = qedf->bdq_pbl_dma;
2656 list++;
2657 page += QEDF_PAGE_SIZE;
2658 }
2659
2660 return 0;
2661}
2662
2663static int qedf_alloc_global_queues(struct qedf_ctx *qedf)
2664{
2665 u32 *list;
2666 int i;
2667 int status = 0, rc;
2668 u32 *pbl;
2669 dma_addr_t page;
2670 int num_pages;
2671
2672 /* Allocate and map CQs, RQs */
2673 /*
2674 * Number of global queues (CQ / RQ). This should
2675 * be <= number of available MSIX vectors for the PF
2676 */
2677 if (!qedf->num_queues) {
2678 QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n");
2679 return 1;
2680 }
2681
2682 /*
2683 * Make sure we allocated the PBL that will contain the physical
2684 * addresses of our queues
2685 */
2686 if (!qedf->p_cpuq) {
2687 status = 1;
2688 goto mem_alloc_failure;
2689 }
2690
2691 qedf->global_queues = kzalloc((sizeof(struct global_queue *)
2692 * qedf->num_queues), GFP_KERNEL);
2693 if (!qedf->global_queues) {
2694 QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global "
2695 "queues array ptr memory\n");
2696 return -ENOMEM;
2697 }
2698 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2699 "qedf->global_queues=%p.\n", qedf->global_queues);
2700
2701 /* Allocate DMA coherent buffers for BDQ */
2702 rc = qedf_alloc_bdq(qedf);
2703 if (rc)
2704 goto mem_alloc_failure;
2705
2706 /* Allocate a CQ and an associated PBL for each MSI-X vector */
2707 for (i = 0; i < qedf->num_queues; i++) {
2708 qedf->global_queues[i] = kzalloc(sizeof(struct global_queue),
2709 GFP_KERNEL);
2710 if (!qedf->global_queues[i]) {
Christophe JAILLET3a240b22017-06-11 08:16:02 +02002711 QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate "
Dupuis, Chad61d86582017-02-15 06:28:23 -08002712 "global queue %d.\n", i);
Christophe JAILLET3a240b22017-06-11 08:16:02 +02002713 status = -ENOMEM;
Dupuis, Chad61d86582017-02-15 06:28:23 -08002714 goto mem_alloc_failure;
2715 }
2716
2717 qedf->global_queues[i]->cq_mem_size =
2718 FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2719 qedf->global_queues[i]->cq_mem_size =
2720 ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE);
2721
2722 qedf->global_queues[i]->cq_pbl_size =
2723 (qedf->global_queues[i]->cq_mem_size /
2724 PAGE_SIZE) * sizeof(void *);
2725 qedf->global_queues[i]->cq_pbl_size =
2726 ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE);
2727
2728 qedf->global_queues[i]->cq =
Christophe JAILLETc4d6ffc2017-06-11 08:16:03 +02002729 dma_zalloc_coherent(&qedf->pdev->dev,
Dupuis, Chad61d86582017-02-15 06:28:23 -08002730 qedf->global_queues[i]->cq_mem_size,
2731 &qedf->global_queues[i]->cq_dma, GFP_KERNEL);
2732
2733 if (!qedf->global_queues[i]->cq) {
Christophe JAILLET32eebb32017-06-11 08:16:04 +02002734 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -08002735 status = -ENOMEM;
2736 goto mem_alloc_failure;
2737 }
Dupuis, Chad61d86582017-02-15 06:28:23 -08002738
2739 qedf->global_queues[i]->cq_pbl =
Christophe JAILLETc4d6ffc2017-06-11 08:16:03 +02002740 dma_zalloc_coherent(&qedf->pdev->dev,
Dupuis, Chad61d86582017-02-15 06:28:23 -08002741 qedf->global_queues[i]->cq_pbl_size,
2742 &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL);
2743
2744 if (!qedf->global_queues[i]->cq_pbl) {
Christophe JAILLET32eebb32017-06-11 08:16:04 +02002745 QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n");
Dupuis, Chad61d86582017-02-15 06:28:23 -08002746 status = -ENOMEM;
2747 goto mem_alloc_failure;
2748 }
Dupuis, Chad61d86582017-02-15 06:28:23 -08002749
2750 /* Create PBL */
2751 num_pages = qedf->global_queues[i]->cq_mem_size /
2752 QEDF_PAGE_SIZE;
2753 page = qedf->global_queues[i]->cq_dma;
2754 pbl = (u32 *)qedf->global_queues[i]->cq_pbl;
2755
2756 while (num_pages--) {
2757 *pbl = U64_LO(page);
2758 pbl++;
2759 *pbl = U64_HI(page);
2760 pbl++;
2761 page += QEDF_PAGE_SIZE;
2762 }
2763 /* Set the initial consumer index for cq */
2764 qedf->global_queues[i]->cq_cons_idx = 0;
2765 }
2766
2767 list = (u32 *)qedf->p_cpuq;
2768
2769 /*
2770 * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
2771 * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points
2772 * to the physical address which contains an array of pointers to
2773 * the physical addresses of the specific queue pages.
2774 */
2775 for (i = 0; i < qedf->num_queues; i++) {
2776 *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma);
2777 list++;
2778 *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma);
2779 list++;
2780 *list = U64_LO(0);
2781 list++;
2782 *list = U64_HI(0);
2783 list++;
2784 }
2785
2786 return 0;
2787
2788mem_alloc_failure:
2789 qedf_free_global_queues(qedf);
2790 return status;
2791}
2792
2793static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf)
2794{
2795 u8 sq_num_pbl_pages;
2796 u32 sq_mem_size;
2797 u32 cq_mem_size;
2798 u32 cq_num_entries;
2799 int rval;
2800
2801 /*
2802 * The number of completion queues/fastpath interrupts/status blocks
2803 * we allocation is the minimum off:
2804 *
2805 * Number of CPUs
Thomas Bogendoerfer722477c2017-07-25 11:19:21 +02002806 * Number allocated by qed for our PCI function
Dupuis, Chad61d86582017-02-15 06:28:23 -08002807 */
Thomas Bogendoerfer722477c2017-07-25 11:19:21 +02002808 qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002809
2810 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n",
2811 qedf->num_queues);
2812
2813 qedf->p_cpuq = pci_alloc_consistent(qedf->pdev,
2814 qedf->num_queues * sizeof(struct qedf_glbl_q_params),
2815 &qedf->hw_p_cpuq);
2816
2817 if (!qedf->p_cpuq) {
2818 QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n");
2819 return 1;
2820 }
2821
2822 rval = qedf_alloc_global_queues(qedf);
2823 if (rval) {
2824 QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation "
2825 "failed.\n");
2826 return 1;
2827 }
2828
2829 /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */
2830 sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe);
2831 sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE);
2832 sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE);
2833
2834 /* Calculate CQ num entries */
2835 cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe);
2836 cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE);
2837 cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe);
2838
Christophe JAILLET32eebb32017-06-11 08:16:04 +02002839 memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params));
Dupuis, Chad61d86582017-02-15 06:28:23 -08002840
2841 /* Setup the value for fcoe PF */
2842 qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS;
2843 qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS;
2844 qedf->pf_params.fcoe_pf_params.glbl_q_params_addr =
2845 (u64)qedf->hw_p_cpuq;
2846 qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages;
2847
2848 qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0;
2849
2850 qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries;
2851 qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues;
2852
2853 /* log_page_size: 12 for 4KB pages */
2854 qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE);
2855
2856 qedf->pf_params.fcoe_pf_params.mtu = 9000;
2857 qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI;
2858 qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI;
2859
2860 /* BDQ address and size */
2861 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] =
2862 qedf->bdq_pbl_list_dma;
2863 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] =
2864 qedf->bdq_pbl_list_num_entries;
2865 qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE;
2866
2867 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2868 "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n",
2869 qedf->bdq_pbl_list,
2870 qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0],
2871 qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]);
2872
2873 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
2874 "cq_num_entries=%d.\n",
2875 qedf->pf_params.fcoe_pf_params.cq_num_entries);
2876
2877 return 0;
2878}
2879
2880/* Free DMA coherent memory for array of queue pointers we pass to qed */
2881static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf)
2882{
2883 size_t size = 0;
2884
2885 if (qedf->p_cpuq) {
2886 size = qedf->num_queues * sizeof(struct qedf_glbl_q_params);
2887 pci_free_consistent(qedf->pdev, size, qedf->p_cpuq,
2888 qedf->hw_p_cpuq);
2889 }
2890
2891 qedf_free_global_queues(qedf);
2892
2893 if (qedf->global_queues)
2894 kfree(qedf->global_queues);
2895}
2896
2897/*
2898 * PCI driver functions
2899 */
2900
2901static const struct pci_device_id qedf_pci_tbl[] = {
2902 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) },
2903 { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) },
2904 {0}
2905};
2906MODULE_DEVICE_TABLE(pci, qedf_pci_tbl);
2907
2908static struct pci_driver qedf_pci_driver = {
2909 .name = QEDF_MODULE_NAME,
2910 .id_table = qedf_pci_tbl,
2911 .probe = qedf_probe,
2912 .remove = qedf_remove,
2913};
2914
2915static int __qedf_probe(struct pci_dev *pdev, int mode)
2916{
2917 int rc = -EINVAL;
2918 struct fc_lport *lport;
2919 struct qedf_ctx *qedf;
2920 struct Scsi_Host *host;
2921 bool is_vf = false;
2922 struct qed_ll2_params params;
2923 char host_buf[20];
2924 struct qed_link_params link_params;
2925 int status;
2926 void *task_start, *task_end;
2927 struct qed_slowpath_params slowpath_params;
2928 struct qed_probe_params qed_params;
2929 u16 tmp;
2930
2931 /*
2932 * When doing error recovery we didn't reap the lport so don't try
2933 * to reallocate it.
2934 */
2935 if (mode != QEDF_MODE_RECOVERY) {
2936 lport = libfc_host_alloc(&qedf_host_template,
2937 sizeof(struct qedf_ctx));
2938
2939 if (!lport) {
2940 QEDF_ERR(NULL, "Could not allocate lport.\n");
2941 rc = -ENOMEM;
2942 goto err0;
2943 }
2944
2945 /* Initialize qedf_ctx */
2946 qedf = lport_priv(lport);
2947 qedf->lport = lport;
2948 qedf->ctlr.lp = lport;
2949 qedf->pdev = pdev;
2950 qedf->dbg_ctx.pdev = pdev;
2951 qedf->dbg_ctx.host_no = lport->host->host_no;
2952 spin_lock_init(&qedf->hba_lock);
2953 INIT_LIST_HEAD(&qedf->fcports);
2954 qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1;
2955 atomic_set(&qedf->num_offloads, 0);
2956 qedf->stop_io_on_error = false;
2957 pci_set_drvdata(pdev, qedf);
Chad Dupuis8eaf7df2017-03-23 06:58:47 -07002958 init_completion(&qedf->fipvlan_compl);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002959
2960 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO,
2961 "QLogic FastLinQ FCoE Module qedf %s, "
2962 "FW %d.%d.%d.%d\n", QEDF_VERSION,
2963 FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION,
2964 FW_ENGINEERING_VERSION);
2965 } else {
2966 /* Init pointers during recovery */
2967 qedf = pci_get_drvdata(pdev);
2968 lport = qedf->lport;
2969 }
2970
2971 host = lport->host;
2972
2973 /* Allocate mempool for qedf_io_work structs */
2974 qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN,
2975 qedf_io_work_cache);
2976 if (qedf->io_mempool == NULL) {
2977 QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n");
2978 goto err1;
2979 }
2980 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n",
2981 qedf->io_mempool);
2982
2983 sprintf(host_buf, "qedf_%u_link",
2984 qedf->lport->host->host_no);
Chad Dupuis428ca642017-08-15 10:08:19 -07002985 qedf->link_update_wq = create_workqueue(host_buf);
Dupuis, Chad61d86582017-02-15 06:28:23 -08002986 INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update);
2987 INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery);
2988
2989 qedf->fipvlan_retries = qedf_fipvlan_retries;
2990
2991 /*
2992 * Common probe. Takes care of basic hardware init and pci_*
2993 * functions.
2994 */
2995 memset(&qed_params, 0, sizeof(qed_params));
2996 qed_params.protocol = QED_PROTOCOL_FCOE;
2997 qed_params.dp_module = qedf_dp_module;
2998 qed_params.dp_level = qedf_dp_level;
2999 qed_params.is_vf = is_vf;
3000 qedf->cdev = qed_ops->common->probe(pdev, &qed_params);
3001 if (!qedf->cdev) {
3002 rc = -ENODEV;
3003 goto err1;
3004 }
3005
Thomas Bogendoerfer722477c2017-07-25 11:19:21 +02003006 /* Learn information crucial for qedf to progress */
3007 rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info);
3008 if (rc) {
3009 QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n");
3010 goto err1;
3011 }
3012
Dupuis, Chad61d86582017-02-15 06:28:23 -08003013 /* queue allocation code should come here
3014 * order should be
3015 * slowpath_start
3016 * status block allocation
3017 * interrupt registration (to get min number of queues)
3018 * set_fcoe_pf_param
3019 * qed_sp_fcoe_func_start
3020 */
3021 rc = qedf_set_fcoe_pf_param(qedf);
3022 if (rc) {
3023 QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n");
3024 goto err2;
3025 }
3026 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3027
Dupuis, Chad61d86582017-02-15 06:28:23 -08003028 /* Record BDQ producer doorbell addresses */
3029 qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr;
3030 qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr;
3031 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3032 "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod,
3033 qedf->bdq_secondary_prod);
3034
3035 qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf);
3036
3037 rc = qedf_prepare_sb(qedf);
3038 if (rc) {
3039
3040 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3041 goto err2;
3042 }
3043
3044 /* Start the Slowpath-process */
3045 slowpath_params.int_mode = QED_INT_MODE_MSIX;
3046 slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER;
3047 slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER;
3048 slowpath_params.drv_rev = QEDF_DRIVER_REV_VER;
3049 slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER;
Kees Cookcd228742017-05-05 15:42:55 -07003050 strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE);
Dupuis, Chad61d86582017-02-15 06:28:23 -08003051 rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params);
3052 if (rc) {
3053 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n");
3054 goto err2;
3055 }
3056
3057 /*
3058 * update_pf_params needs to be called before and after slowpath
3059 * start
3060 */
3061 qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params);
3062
3063 /* Setup interrupts */
3064 rc = qedf_setup_int(qedf);
3065 if (rc)
3066 goto err3;
3067
3068 rc = qed_ops->start(qedf->cdev, &qedf->tasks);
3069 if (rc) {
3070 QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n");
3071 goto err4;
3072 }
3073 task_start = qedf_get_task_mem(&qedf->tasks, 0);
3074 task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1);
3075 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, "
3076 "end=%p block_size=%u.\n", task_start, task_end,
3077 qedf->tasks.size);
3078
3079 /*
3080 * We need to write the number of BDs in the BDQ we've preallocated so
3081 * the f/w will do a prefetch and we'll get an unsolicited CQE when a
3082 * packet arrives.
3083 */
3084 qedf->bdq_prod_idx = QEDF_BDQ_SIZE;
3085 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3086 "Writing %d to primary and secondary BDQ doorbell registers.\n",
3087 qedf->bdq_prod_idx);
3088 writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod);
3089 tmp = readw(qedf->bdq_primary_prod);
3090 writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod);
3091 tmp = readw(qedf->bdq_secondary_prod);
3092
3093 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3094
3095 /* Now that the dev_info struct has been filled in set the MAC
3096 * address
3097 */
3098 ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac);
3099 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n",
3100 qedf->mac);
3101
Chad Dupuis01fd76a2017-08-15 10:08:16 -07003102 /*
3103 * Set the WWNN and WWPN in the following way:
3104 *
3105 * If the info we get from qed is non-zero then use that to set the
3106 * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based
3107 * on the MAC address.
3108 */
3109 if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) {
3110 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3111 "Setting WWPN and WWNN from qed dev_info.\n");
3112 qedf->wwnn = qedf->dev_info.wwnn;
3113 qedf->wwpn = qedf->dev_info.wwpn;
3114 } else {
3115 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3116 "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n");
3117 qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0);
3118 qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0);
3119 }
Dupuis, Chad61d86582017-02-15 06:28:23 -08003120 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx "
3121 "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn);
3122
3123 sprintf(host_buf, "host_%d", host->host_no);
Mintz, Yuval712c3cb2017-05-23 09:41:28 +03003124 qed_ops->common->set_name(qedf->cdev, host_buf);
Dupuis, Chad61d86582017-02-15 06:28:23 -08003125
3126
3127 /* Set xid max values */
3128 qedf->max_scsi_xid = QEDF_MAX_SCSI_XID;
3129 qedf->max_els_xid = QEDF_MAX_ELS_XID;
3130
3131 /* Allocate cmd mgr */
3132 qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf);
3133 if (!qedf->cmd_mgr) {
3134 QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n");
Wei Yongjune89cabf2018-01-17 12:42:41 +00003135 rc = -ENOMEM;
Dupuis, Chad61d86582017-02-15 06:28:23 -08003136 goto err5;
3137 }
3138
3139 if (mode != QEDF_MODE_RECOVERY) {
3140 host->transportt = qedf_fc_transport_template;
3141 host->can_queue = QEDF_MAX_ELS_XID;
3142 host->max_lun = qedf_max_lun;
3143 host->max_cmd_len = QEDF_MAX_CDB_LEN;
3144 rc = scsi_add_host(host, &pdev->dev);
3145 if (rc)
3146 goto err6;
3147 }
3148
3149 memset(&params, 0, sizeof(params));
3150 params.mtu = 9000;
3151 ether_addr_copy(params.ll2_mac_address, qedf->mac);
3152
3153 /* Start LL2 processing thread */
3154 snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no);
3155 qedf->ll2_recv_wq =
Chad Dupuis428ca642017-08-15 10:08:19 -07003156 create_workqueue(host_buf);
Dupuis, Chad61d86582017-02-15 06:28:23 -08003157 if (!qedf->ll2_recv_wq) {
3158 QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n");
Wei Yongjune89cabf2018-01-17 12:42:41 +00003159 rc = -ENOMEM;
Dupuis, Chad61d86582017-02-15 06:28:23 -08003160 goto err7;
3161 }
3162
3163#ifdef CONFIG_DEBUG_FS
Arnd Bergmannd9ea4632018-02-02 14:12:18 +01003164 qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops,
3165 qedf_dbg_fops);
Dupuis, Chad61d86582017-02-15 06:28:23 -08003166#endif
3167
3168 /* Start LL2 */
3169 qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf);
3170 rc = qed_ops->ll2->start(qedf->cdev, &params);
3171 if (rc) {
3172 QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n");
3173 goto err7;
3174 }
3175 set_bit(QEDF_LL2_STARTED, &qedf->flags);
3176
Chad Dupuiscf291162017-08-15 10:08:18 -07003177 /* Set initial FIP/FCoE VLAN to NULL */
Dupuis, Chad61d86582017-02-15 06:28:23 -08003178 qedf->vlan_id = 0;
3179
3180 /*
3181 * No need to setup fcoe_ctlr or fc_lport objects during recovery since
3182 * they were not reaped during the unload process.
3183 */
3184 if (mode != QEDF_MODE_RECOVERY) {
3185 /* Setup imbedded fcoe controller */
3186 qedf_fcoe_ctlr_setup(qedf);
3187
3188 /* Setup lport */
3189 rc = qedf_lport_setup(qedf);
3190 if (rc) {
3191 QEDF_ERR(&(qedf->dbg_ctx),
3192 "qedf_lport_setup failed.\n");
3193 goto err7;
3194 }
3195 }
3196
3197 sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no);
3198 qedf->timer_work_queue =
Chad Dupuis428ca642017-08-15 10:08:19 -07003199 create_workqueue(host_buf);
Dupuis, Chad61d86582017-02-15 06:28:23 -08003200 if (!qedf->timer_work_queue) {
3201 QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer "
3202 "workqueue.\n");
Wei Yongjune89cabf2018-01-17 12:42:41 +00003203 rc = -ENOMEM;
Dupuis, Chad61d86582017-02-15 06:28:23 -08003204 goto err7;
3205 }
3206
3207 /* DPC workqueue is not reaped during recovery unload */
3208 if (mode != QEDF_MODE_RECOVERY) {
3209 sprintf(host_buf, "qedf_%u_dpc",
3210 qedf->lport->host->host_no);
Chad Dupuis428ca642017-08-15 10:08:19 -07003211 qedf->dpc_wq = create_workqueue(host_buf);
Dupuis, Chad61d86582017-02-15 06:28:23 -08003212 }
3213
3214 /*
3215 * GRC dump and sysfs parameters are not reaped during the recovery
3216 * unload process.
3217 */
3218 if (mode != QEDF_MODE_RECOVERY) {
3219 qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev);
3220 if (qedf->grcdump_size) {
3221 rc = qedf_alloc_grc_dump_buf(&qedf->grcdump,
3222 qedf->grcdump_size);
3223 if (rc) {
3224 QEDF_ERR(&(qedf->dbg_ctx),
3225 "GRC Dump buffer alloc failed.\n");
3226 qedf->grcdump = NULL;
3227 }
3228
3229 QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC,
3230 "grcdump: addr=%p, size=%u.\n",
3231 qedf->grcdump, qedf->grcdump_size);
3232 }
3233 qedf_create_sysfs_ctx_attr(qedf);
3234
3235 /* Initialize I/O tracing for this adapter */
3236 spin_lock_init(&qedf->io_trace_lock);
3237 qedf->io_trace_idx = 0;
3238 }
3239
3240 init_completion(&qedf->flogi_compl);
3241
3242 memset(&link_params, 0, sizeof(struct qed_link_params));
3243 link_params.link_up = true;
3244 status = qed_ops->common->set_link(qedf->cdev, &link_params);
3245 if (status)
3246 QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n");
3247
3248 /* Start/restart discovery */
3249 if (mode == QEDF_MODE_RECOVERY)
3250 fcoe_ctlr_link_up(&qedf->ctlr);
3251 else
3252 fc_fabric_login(lport);
3253
3254 /* All good */
3255 return 0;
3256
3257err7:
3258 if (qedf->ll2_recv_wq)
3259 destroy_workqueue(qedf->ll2_recv_wq);
3260 fc_remove_host(qedf->lport->host);
3261 scsi_remove_host(qedf->lport->host);
3262#ifdef CONFIG_DEBUG_FS
3263 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3264#endif
3265err6:
3266 qedf_cmd_mgr_free(qedf->cmd_mgr);
3267err5:
3268 qed_ops->stop(qedf->cdev);
3269err4:
3270 qedf_free_fcoe_pf_param(qedf);
3271 qedf_sync_free_irqs(qedf);
3272err3:
3273 qed_ops->common->slowpath_stop(qedf->cdev);
3274err2:
3275 qed_ops->common->remove(qedf->cdev);
3276err1:
3277 scsi_host_put(lport->host);
3278err0:
3279 return rc;
3280}
3281
3282static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3283{
3284 return __qedf_probe(pdev, QEDF_MODE_NORMAL);
3285}
3286
3287static void __qedf_remove(struct pci_dev *pdev, int mode)
3288{
3289 struct qedf_ctx *qedf;
3290
3291 if (!pdev) {
3292 QEDF_ERR(NULL, "pdev is NULL.\n");
3293 return;
3294 }
3295
3296 qedf = pci_get_drvdata(pdev);
3297
3298 /*
3299 * Prevent race where we're in board disable work and then try to
3300 * rmmod the module.
3301 */
3302 if (test_bit(QEDF_UNLOADING, &qedf->flags)) {
3303 QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n");
3304 return;
3305 }
3306
3307 if (mode != QEDF_MODE_RECOVERY)
3308 set_bit(QEDF_UNLOADING, &qedf->flags);
3309
3310 /* Logoff the fabric to upload all connections */
3311 if (mode == QEDF_MODE_RECOVERY)
3312 fcoe_ctlr_link_down(&qedf->ctlr);
3313 else
3314 fc_fabric_logoff(qedf->lport);
3315 qedf_wait_for_upload(qedf);
3316
3317#ifdef CONFIG_DEBUG_FS
3318 qedf_dbg_host_exit(&(qedf->dbg_ctx));
3319#endif
3320
3321 /* Stop any link update handling */
3322 cancel_delayed_work_sync(&qedf->link_update);
3323 destroy_workqueue(qedf->link_update_wq);
3324 qedf->link_update_wq = NULL;
3325
3326 if (qedf->timer_work_queue)
3327 destroy_workqueue(qedf->timer_work_queue);
3328
3329 /* Stop Light L2 */
3330 clear_bit(QEDF_LL2_STARTED, &qedf->flags);
3331 qed_ops->ll2->stop(qedf->cdev);
3332 if (qedf->ll2_recv_wq)
3333 destroy_workqueue(qedf->ll2_recv_wq);
3334
3335 /* Stop fastpath */
3336 qedf_sync_free_irqs(qedf);
3337 qedf_destroy_sb(qedf);
3338
3339 /*
3340 * During recovery don't destroy OS constructs that represent the
3341 * physical port.
3342 */
3343 if (mode != QEDF_MODE_RECOVERY) {
3344 qedf_free_grc_dump_buf(&qedf->grcdump);
3345 qedf_remove_sysfs_ctx_attr(qedf);
3346
3347 /* Remove all SCSI/libfc/libfcoe structures */
3348 fcoe_ctlr_destroy(&qedf->ctlr);
3349 fc_lport_destroy(qedf->lport);
3350 fc_remove_host(qedf->lport->host);
3351 scsi_remove_host(qedf->lport->host);
3352 }
3353
3354 qedf_cmd_mgr_free(qedf->cmd_mgr);
3355
3356 if (mode != QEDF_MODE_RECOVERY) {
3357 fc_exch_mgr_free(qedf->lport);
3358 fc_lport_free_stats(qedf->lport);
3359
3360 /* Wait for all vports to be reaped */
3361 qedf_wait_for_vport_destroy(qedf);
3362 }
3363
3364 /*
3365 * Now that all connections have been uploaded we can stop the
3366 * rest of the qed operations
3367 */
3368 qed_ops->stop(qedf->cdev);
3369
3370 if (mode != QEDF_MODE_RECOVERY) {
3371 if (qedf->dpc_wq) {
3372 /* Stop general DPC handling */
3373 destroy_workqueue(qedf->dpc_wq);
3374 qedf->dpc_wq = NULL;
3375 }
3376 }
3377
3378 /* Final shutdown for the board */
3379 qedf_free_fcoe_pf_param(qedf);
3380 if (mode != QEDF_MODE_RECOVERY) {
3381 qed_ops->common->set_power_state(qedf->cdev, PCI_D0);
3382 pci_set_drvdata(pdev, NULL);
3383 }
3384 qed_ops->common->slowpath_stop(qedf->cdev);
3385 qed_ops->common->remove(qedf->cdev);
3386
3387 mempool_destroy(qedf->io_mempool);
3388
3389 /* Only reap the Scsi_host on a real removal */
3390 if (mode != QEDF_MODE_RECOVERY)
3391 scsi_host_put(qedf->lport->host);
3392}
3393
3394static void qedf_remove(struct pci_dev *pdev)
3395{
3396 /* Check to make sure this function wasn't already disabled */
3397 if (!atomic_read(&pdev->enable_cnt))
3398 return;
3399
3400 __qedf_remove(pdev, QEDF_MODE_NORMAL);
3401}
3402
3403/*
3404 * Module Init/Remove
3405 */
3406
3407static int __init qedf_init(void)
3408{
3409 int ret;
3410
3411 /* If debug=1 passed, set the default log mask */
3412 if (qedf_debug == QEDF_LOG_DEFAULT)
3413 qedf_debug = QEDF_DEFAULT_LOG_MASK;
3414
Chad Dupuisa93755c2018-04-25 06:08:50 -07003415 /* Check that default prio for FIP/FCoE traffic is between 0..7 */
3416 if (qedf_default_prio > 7) {
3417 qedf_default_prio = QEDF_DEFAULT_PRIO;
3418 QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n",
3419 QEDF_DEFAULT_PRIO);
3420 }
3421
Dupuis, Chad61d86582017-02-15 06:28:23 -08003422 /* Print driver banner */
3423 QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR,
3424 QEDF_VERSION);
3425
3426 /* Create kmem_cache for qedf_io_work structs */
3427 qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache",
3428 sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL);
3429 if (qedf_io_work_cache == NULL) {
3430 QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n");
3431 goto err1;
3432 }
3433 QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n",
3434 qedf_io_work_cache);
3435
3436 qed_ops = qed_get_fcoe_ops();
3437 if (!qed_ops) {
3438 QEDF_ERR(NULL, "Failed to get qed fcoe operations\n");
3439 goto err1;
3440 }
3441
3442#ifdef CONFIG_DEBUG_FS
3443 qedf_dbg_init("qedf");
3444#endif
3445
3446 qedf_fc_transport_template =
3447 fc_attach_transport(&qedf_fc_transport_fn);
3448 if (!qedf_fc_transport_template) {
3449 QEDF_ERR(NULL, "Could not register with FC transport\n");
3450 goto err2;
3451 }
3452
3453 qedf_fc_vport_transport_template =
3454 fc_attach_transport(&qedf_fc_vport_transport_fn);
3455 if (!qedf_fc_vport_transport_template) {
3456 QEDF_ERR(NULL, "Could not register vport template with FC "
3457 "transport\n");
3458 goto err3;
3459 }
3460
3461 qedf_io_wq = create_workqueue("qedf_io_wq");
3462 if (!qedf_io_wq) {
3463 QEDF_ERR(NULL, "Could not create qedf_io_wq.\n");
3464 goto err4;
3465 }
3466
3467 qedf_cb_ops.get_login_failures = qedf_get_login_failures;
3468
3469 ret = pci_register_driver(&qedf_pci_driver);
3470 if (ret) {
3471 QEDF_ERR(NULL, "Failed to register driver\n");
3472 goto err5;
3473 }
3474
3475 return 0;
3476
3477err5:
3478 destroy_workqueue(qedf_io_wq);
3479err4:
3480 fc_release_transport(qedf_fc_vport_transport_template);
3481err3:
3482 fc_release_transport(qedf_fc_transport_template);
3483err2:
3484#ifdef CONFIG_DEBUG_FS
3485 qedf_dbg_exit();
3486#endif
3487 qed_put_fcoe_ops();
3488err1:
3489 return -EINVAL;
3490}
3491
3492static void __exit qedf_cleanup(void)
3493{
3494 pci_unregister_driver(&qedf_pci_driver);
3495
3496 destroy_workqueue(qedf_io_wq);
3497
3498 fc_release_transport(qedf_fc_vport_transport_template);
3499 fc_release_transport(qedf_fc_transport_template);
3500#ifdef CONFIG_DEBUG_FS
3501 qedf_dbg_exit();
3502#endif
3503 qed_put_fcoe_ops();
3504
3505 kmem_cache_destroy(qedf_io_work_cache);
3506}
3507
3508MODULE_LICENSE("GPL");
3509MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver");
3510MODULE_AUTHOR("QLogic Corporation");
3511MODULE_VERSION(QEDF_VERSION);
3512module_init(qedf_init);
3513module_exit(qedf_cleanup);