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1 | /* |
2 | * QLogic FCoE Offload Driver | |
3 | * Copyright (c) 2016 Cavium Inc. | |
4 | * | |
5 | * This software is available under the terms of the GNU General Public License | |
6 | * (GPL) Version 2, available from the file COPYING in the main directory of | |
7 | * this source tree. | |
8 | */ | |
9 | #include <linux/init.h> | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/pci.h> | |
13 | #include <linux/device.h> | |
14 | #include <linux/highmem.h> | |
15 | #include <linux/crc32.h> | |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/list.h> | |
18 | #include <linux/kthread.h> | |
19 | #include <scsi/libfc.h> | |
20 | #include <scsi/scsi_host.h> | |
21 | #include <linux/if_ether.h> | |
22 | #include <linux/if_vlan.h> | |
23 | #include <linux/cpu.h> | |
24 | #include "qedf.h" | |
25 | ||
26 | const struct qed_fcoe_ops *qed_ops; | |
27 | ||
28 | static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); | |
29 | static void qedf_remove(struct pci_dev *pdev); | |
30 | ||
31 | extern struct qedf_debugfs_ops qedf_debugfs_ops; | |
32 | extern struct file_operations qedf_dbg_fops; | |
33 | ||
34 | /* | |
35 | * Driver module parameters. | |
36 | */ | |
37 | static unsigned int qedf_dev_loss_tmo = 60; | |
38 | module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); | |
39 | MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " | |
40 | "remote ports (default 60)"); | |
41 | ||
42 | uint qedf_debug = QEDF_LOG_INFO; | |
43 | module_param_named(debug, qedf_debug, uint, S_IRUGO); | |
44 | MODULE_PARM_DESC(qedf_debug, " Debug mask. Pass '1' to enable default debugging" | |
45 | " mask"); | |
46 | ||
47 | static uint qedf_fipvlan_retries = 30; | |
48 | module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); | |
49 | MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " | |
50 | "before giving up (default 30)"); | |
51 | ||
52 | static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; | |
53 | module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); | |
54 | MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " | |
55 | "(default 1002)."); | |
56 | ||
57 | static uint qedf_default_prio = QEDF_DEFAULT_PRIO; | |
58 | module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); | |
59 | MODULE_PARM_DESC(default_prio, " Default 802.1q priority for FIP and FCoE" | |
60 | " traffic (default 3)."); | |
61 | ||
62 | uint qedf_dump_frames; | |
63 | module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); | |
64 | MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " | |
65 | "(default off)"); | |
66 | ||
67 | static uint qedf_queue_depth; | |
68 | module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); | |
69 | MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " | |
70 | "by the qedf driver. Default is 0 (use OS default)."); | |
71 | ||
72 | uint qedf_io_tracing; | |
73 | module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); | |
74 | MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " | |
75 | "into trace buffer. (default off)."); | |
76 | ||
77 | static uint qedf_max_lun = MAX_FIBRE_LUNS; | |
78 | module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); | |
79 | MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " | |
80 | "supports. (default 0xffffffff)"); | |
81 | ||
82 | uint qedf_link_down_tmo; | |
83 | module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); | |
84 | MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " | |
85 | "link is down by N seconds."); | |
86 | ||
87 | bool qedf_retry_delay; | |
88 | module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); | |
89 | MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " | |
90 | "delay handling (default off)."); | |
91 | ||
92 | static uint qedf_dp_module; | |
93 | module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); | |
94 | MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " | |
95 | "qed module during probe."); | |
96 | ||
97 | static uint qedf_dp_level; | |
98 | module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); | |
99 | MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " | |
100 | "during probe (0-3: 0 more verbose)."); | |
101 | ||
102 | struct workqueue_struct *qedf_io_wq; | |
103 | ||
104 | static struct fcoe_percpu_s qedf_global; | |
105 | static DEFINE_SPINLOCK(qedf_global_lock); | |
106 | ||
107 | static struct kmem_cache *qedf_io_work_cache; | |
108 | ||
109 | void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) | |
110 | { | |
111 | qedf->vlan_id = vlan_id; | |
112 | qedf->vlan_id |= qedf_default_prio << VLAN_PRIO_SHIFT; | |
113 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x " | |
114 | "prio=%d.\n", vlan_id, qedf_default_prio); | |
115 | } | |
116 | ||
117 | /* Returns true if we have a valid vlan, false otherwise */ | |
118 | static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) | |
119 | { | |
120 | int rc; | |
121 | ||
122 | if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { | |
123 | QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n"); | |
124 | return false; | |
125 | } | |
126 | ||
127 | while (qedf->fipvlan_retries--) { | |
128 | if (qedf->vlan_id > 0) | |
129 | return true; | |
130 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
131 | "Retry %d.\n", qedf->fipvlan_retries); | |
132 | init_completion(&qedf->fipvlan_compl); | |
133 | qedf_fcoe_send_vlan_req(qedf); | |
134 | rc = wait_for_completion_timeout(&qedf->fipvlan_compl, | |
135 | 1 * HZ); | |
136 | if (rc > 0) { | |
137 | fcoe_ctlr_link_up(&qedf->ctlr); | |
138 | return true; | |
139 | } | |
140 | } | |
141 | ||
142 | return false; | |
143 | } | |
144 | ||
145 | static void qedf_handle_link_update(struct work_struct *work) | |
146 | { | |
147 | struct qedf_ctx *qedf = | |
148 | container_of(work, struct qedf_ctx, link_update.work); | |
149 | int rc; | |
150 | ||
151 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n"); | |
152 | ||
153 | if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { | |
154 | rc = qedf_initiate_fipvlan_req(qedf); | |
155 | if (rc) | |
156 | return; | |
157 | /* | |
158 | * If we get here then we never received a repsonse to our | |
159 | * fip vlan request so set the vlan_id to the default and | |
160 | * tell FCoE that the link is up | |
161 | */ | |
162 | QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " | |
163 | "response, falling back to default VLAN %d.\n", | |
164 | qedf_fallback_vlan); | |
165 | qedf_set_vlan_id(qedf, QEDF_FALLBACK_VLAN); | |
166 | ||
167 | /* | |
168 | * Zero out data_src_addr so we'll update it with the new | |
169 | * lport port_id | |
170 | */ | |
171 | eth_zero_addr(qedf->data_src_addr); | |
172 | fcoe_ctlr_link_up(&qedf->ctlr); | |
173 | } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { | |
174 | /* | |
175 | * If we hit here and link_down_tmo_valid is still 1 it means | |
176 | * that link_down_tmo timed out so set it to 0 to make sure any | |
177 | * other readers have accurate state. | |
178 | */ | |
179 | atomic_set(&qedf->link_down_tmo_valid, 0); | |
180 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
181 | "Calling fcoe_ctlr_link_down().\n"); | |
182 | fcoe_ctlr_link_down(&qedf->ctlr); | |
183 | qedf_wait_for_upload(qedf); | |
184 | /* Reset the number of FIP VLAN retries */ | |
185 | qedf->fipvlan_retries = qedf_fipvlan_retries; | |
186 | } | |
187 | } | |
188 | ||
189 | static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, | |
190 | void *arg) | |
191 | { | |
192 | struct fc_exch *exch = fc_seq_exch(seq); | |
193 | struct fc_lport *lport = exch->lp; | |
194 | struct qedf_ctx *qedf = lport_priv(lport); | |
195 | ||
196 | if (!qedf) { | |
197 | QEDF_ERR(NULL, "qedf is NULL.\n"); | |
198 | return; | |
199 | } | |
200 | ||
201 | /* | |
202 | * If ERR_PTR is set then don't try to stat anything as it will cause | |
203 | * a crash when we access fp. | |
204 | */ | |
205 | if (IS_ERR(fp)) { | |
206 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, | |
207 | "fp has IS_ERR() set.\n"); | |
208 | goto skip_stat; | |
209 | } | |
210 | ||
211 | /* Log stats for FLOGI reject */ | |
212 | if (fc_frame_payload_op(fp) == ELS_LS_RJT) | |
213 | qedf->flogi_failed++; | |
214 | ||
215 | /* Complete flogi_compl so we can proceed to sending ADISCs */ | |
216 | complete(&qedf->flogi_compl); | |
217 | ||
218 | skip_stat: | |
219 | /* Report response to libfc */ | |
220 | fc_lport_flogi_resp(seq, fp, lport); | |
221 | } | |
222 | ||
223 | static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, | |
224 | struct fc_frame *fp, unsigned int op, | |
225 | void (*resp)(struct fc_seq *, | |
226 | struct fc_frame *, | |
227 | void *), | |
228 | void *arg, u32 timeout) | |
229 | { | |
230 | struct qedf_ctx *qedf = lport_priv(lport); | |
231 | ||
232 | /* | |
233 | * Intercept FLOGI for statistic purposes. Note we use the resp | |
234 | * callback to tell if this is really a flogi. | |
235 | */ | |
236 | if (resp == fc_lport_flogi_resp) { | |
237 | qedf->flogi_cnt++; | |
238 | return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, | |
239 | arg, timeout); | |
240 | } | |
241 | ||
242 | return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); | |
243 | } | |
244 | ||
245 | int qedf_send_flogi(struct qedf_ctx *qedf) | |
246 | { | |
247 | struct fc_lport *lport; | |
248 | struct fc_frame *fp; | |
249 | ||
250 | lport = qedf->lport; | |
251 | ||
252 | if (!lport->tt.elsct_send) | |
253 | return -EINVAL; | |
254 | ||
255 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
256 | if (!fp) { | |
257 | QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); | |
258 | return -ENOMEM; | |
259 | } | |
260 | ||
261 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, | |
262 | "Sending FLOGI to reestablish session with switch.\n"); | |
263 | lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, | |
264 | ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); | |
265 | ||
266 | init_completion(&qedf->flogi_compl); | |
267 | ||
268 | return 0; | |
269 | } | |
270 | ||
271 | struct qedf_tmp_rdata_item { | |
272 | struct fc_rport_priv *rdata; | |
273 | struct list_head list; | |
274 | }; | |
275 | ||
276 | /* | |
277 | * This function is called if link_down_tmo is in use. If we get a link up and | |
278 | * link_down_tmo has not expired then use just FLOGI/ADISC to recover our | |
279 | * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). | |
280 | */ | |
281 | static void qedf_link_recovery(struct work_struct *work) | |
282 | { | |
283 | struct qedf_ctx *qedf = | |
284 | container_of(work, struct qedf_ctx, link_recovery.work); | |
285 | struct qedf_rport *fcport; | |
286 | struct fc_rport_priv *rdata; | |
287 | struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item; | |
288 | bool rc; | |
289 | int retries = 30; | |
290 | int rval, i; | |
291 | struct list_head rdata_login_list; | |
292 | ||
293 | INIT_LIST_HEAD(&rdata_login_list); | |
294 | ||
295 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
296 | "Link down tmo did not expire.\n"); | |
297 | ||
298 | /* | |
299 | * Essentially reset the fcoe_ctlr here without affecting the state | |
300 | * of the libfc structs. | |
301 | */ | |
302 | qedf->ctlr.state = FIP_ST_LINK_WAIT; | |
303 | fcoe_ctlr_link_down(&qedf->ctlr); | |
304 | ||
305 | /* | |
306 | * Bring the link up before we send the fipvlan request so libfcoe | |
307 | * can select a new fcf in parallel | |
308 | */ | |
309 | fcoe_ctlr_link_up(&qedf->ctlr); | |
310 | ||
311 | /* Since the link when down and up to verify which vlan we're on */ | |
312 | qedf->fipvlan_retries = qedf_fipvlan_retries; | |
313 | rc = qedf_initiate_fipvlan_req(qedf); | |
314 | if (!rc) | |
315 | return; | |
316 | ||
317 | /* | |
318 | * We need to wait for an FCF to be selected due to the | |
319 | * fcoe_ctlr_link_up other the FLOGI will be rejected. | |
320 | */ | |
321 | while (retries > 0) { | |
322 | if (qedf->ctlr.sel_fcf) { | |
323 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
324 | "FCF reselected, proceeding with FLOGI.\n"); | |
325 | break; | |
326 | } | |
327 | msleep(500); | |
328 | retries--; | |
329 | } | |
330 | ||
331 | if (retries < 1) { | |
332 | QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " | |
333 | "FCF selection.\n"); | |
334 | return; | |
335 | } | |
336 | ||
337 | rval = qedf_send_flogi(qedf); | |
338 | if (rval) | |
339 | return; | |
340 | ||
341 | /* Wait for FLOGI completion before proceeding with sending ADISCs */ | |
342 | i = wait_for_completion_timeout(&qedf->flogi_compl, | |
343 | qedf->lport->r_a_tov); | |
344 | if (i == 0) { | |
345 | QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); | |
346 | return; | |
347 | } | |
348 | ||
349 | /* | |
350 | * Call lport->tt.rport_login which will cause libfc to send an | |
351 | * ADISC since the rport is in state ready. | |
352 | */ | |
353 | rcu_read_lock(); | |
354 | list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { | |
355 | rdata = fcport->rdata; | |
356 | if (rdata == NULL) | |
357 | continue; | |
358 | rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item), | |
359 | GFP_ATOMIC); | |
360 | if (!rdata_item) | |
361 | continue; | |
362 | if (kref_get_unless_zero(&rdata->kref)) { | |
363 | rdata_item->rdata = rdata; | |
364 | list_add(&rdata_item->list, &rdata_login_list); | |
365 | } else | |
366 | kfree(rdata_item); | |
367 | } | |
368 | rcu_read_unlock(); | |
369 | /* | |
370 | * Do the fc_rport_login outside of the rcu lock so we don't take a | |
371 | * mutex in an atomic context. | |
372 | */ | |
373 | list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list, | |
374 | list) { | |
375 | list_del(&rdata_item->list); | |
376 | fc_rport_login(rdata_item->rdata); | |
377 | kref_put(&rdata_item->rdata->kref, fc_rport_destroy); | |
378 | kfree(rdata_item); | |
379 | } | |
380 | } | |
381 | ||
382 | static void qedf_update_link_speed(struct qedf_ctx *qedf, | |
383 | struct qed_link_output *link) | |
384 | { | |
385 | struct fc_lport *lport = qedf->lport; | |
386 | ||
387 | lport->link_speed = FC_PORTSPEED_UNKNOWN; | |
388 | lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; | |
389 | ||
390 | /* Set fc_host link speed */ | |
391 | switch (link->speed) { | |
392 | case 10000: | |
393 | lport->link_speed = FC_PORTSPEED_10GBIT; | |
394 | break; | |
395 | case 25000: | |
396 | lport->link_speed = FC_PORTSPEED_25GBIT; | |
397 | break; | |
398 | case 40000: | |
399 | lport->link_speed = FC_PORTSPEED_40GBIT; | |
400 | break; | |
401 | case 50000: | |
402 | lport->link_speed = FC_PORTSPEED_50GBIT; | |
403 | break; | |
404 | case 100000: | |
405 | lport->link_speed = FC_PORTSPEED_100GBIT; | |
406 | break; | |
407 | default: | |
408 | lport->link_speed = FC_PORTSPEED_UNKNOWN; | |
409 | break; | |
410 | } | |
411 | ||
412 | /* | |
413 | * Set supported link speed by querying the supported | |
414 | * capabilities of the link. | |
415 | */ | |
416 | if (link->supported_caps & SUPPORTED_10000baseKR_Full) | |
417 | lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; | |
418 | if (link->supported_caps & SUPPORTED_25000baseKR_Full) | |
419 | lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; | |
420 | if (link->supported_caps & SUPPORTED_40000baseLR4_Full) | |
421 | lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; | |
422 | if (link->supported_caps & SUPPORTED_50000baseKR2_Full) | |
423 | lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; | |
424 | if (link->supported_caps & SUPPORTED_100000baseKR4_Full) | |
425 | lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; | |
426 | fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; | |
427 | } | |
428 | ||
429 | static void qedf_link_update(void *dev, struct qed_link_output *link) | |
430 | { | |
431 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; | |
432 | ||
433 | if (link->link_up) { | |
434 | QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", | |
435 | link->speed / 1000); | |
436 | ||
437 | /* Cancel any pending link down work */ | |
438 | cancel_delayed_work(&qedf->link_update); | |
439 | ||
440 | atomic_set(&qedf->link_state, QEDF_LINK_UP); | |
441 | qedf_update_link_speed(qedf, link); | |
442 | ||
443 | if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { | |
444 | QEDF_ERR(&(qedf->dbg_ctx), "DCBx done.\n"); | |
445 | if (atomic_read(&qedf->link_down_tmo_valid) > 0) | |
446 | queue_delayed_work(qedf->link_update_wq, | |
447 | &qedf->link_recovery, 0); | |
448 | else | |
449 | queue_delayed_work(qedf->link_update_wq, | |
450 | &qedf->link_update, 0); | |
451 | atomic_set(&qedf->link_down_tmo_valid, 0); | |
452 | } | |
453 | ||
454 | } else { | |
455 | QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); | |
456 | ||
457 | atomic_set(&qedf->link_state, QEDF_LINK_DOWN); | |
458 | atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); | |
459 | /* | |
460 | * Flag that we're waiting for the link to come back up before | |
461 | * informing the fcoe layer of the event. | |
462 | */ | |
463 | if (qedf_link_down_tmo > 0) { | |
464 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
465 | "Starting link down tmo.\n"); | |
466 | atomic_set(&qedf->link_down_tmo_valid, 1); | |
467 | } | |
468 | qedf->vlan_id = 0; | |
469 | qedf_update_link_speed(qedf, link); | |
470 | queue_delayed_work(qedf->link_update_wq, &qedf->link_update, | |
471 | qedf_link_down_tmo * HZ); | |
472 | } | |
473 | } | |
474 | ||
475 | ||
476 | static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) | |
477 | { | |
478 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; | |
479 | ||
480 | QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " | |
481 | "prio=%d.\n", get->operational.valid, get->operational.enabled, | |
482 | get->operational.app_prio.fcoe); | |
483 | ||
484 | if (get->operational.enabled && get->operational.valid) { | |
485 | /* If DCBX was already negotiated on link up then just exit */ | |
486 | if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { | |
487 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
488 | "DCBX already set on link up.\n"); | |
489 | return; | |
490 | } | |
491 | ||
492 | atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); | |
493 | ||
494 | if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { | |
495 | if (atomic_read(&qedf->link_down_tmo_valid) > 0) | |
496 | queue_delayed_work(qedf->link_update_wq, | |
497 | &qedf->link_recovery, 0); | |
498 | else | |
499 | queue_delayed_work(qedf->link_update_wq, | |
500 | &qedf->link_update, 0); | |
501 | atomic_set(&qedf->link_down_tmo_valid, 0); | |
502 | } | |
503 | } | |
504 | ||
505 | } | |
506 | ||
507 | static u32 qedf_get_login_failures(void *cookie) | |
508 | { | |
509 | struct qedf_ctx *qedf; | |
510 | ||
511 | qedf = (struct qedf_ctx *)cookie; | |
512 | return qedf->flogi_failed; | |
513 | } | |
514 | ||
515 | static struct qed_fcoe_cb_ops qedf_cb_ops = { | |
516 | { | |
517 | .link_update = qedf_link_update, | |
518 | .dcbx_aen = qedf_dcbx_handler, | |
519 | } | |
520 | }; | |
521 | ||
522 | /* | |
523 | * Various transport templates. | |
524 | */ | |
525 | ||
526 | static struct scsi_transport_template *qedf_fc_transport_template; | |
527 | static struct scsi_transport_template *qedf_fc_vport_transport_template; | |
528 | ||
529 | /* | |
530 | * SCSI EH handlers | |
531 | */ | |
532 | static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) | |
533 | { | |
534 | struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); | |
535 | struct fc_rport_libfc_priv *rp = rport->dd_data; | |
536 | struct qedf_rport *fcport; | |
537 | struct fc_lport *lport; | |
538 | struct qedf_ctx *qedf; | |
539 | struct qedf_ioreq *io_req; | |
540 | int rc = FAILED; | |
541 | int rval; | |
542 | ||
543 | if (fc_remote_port_chkready(rport)) { | |
544 | QEDF_ERR(NULL, "rport not ready\n"); | |
545 | goto out; | |
546 | } | |
547 | ||
548 | lport = shost_priv(sc_cmd->device->host); | |
549 | qedf = (struct qedf_ctx *)lport_priv(lport); | |
550 | ||
551 | if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) { | |
552 | QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n"); | |
553 | goto out; | |
554 | } | |
555 | ||
556 | fcport = (struct qedf_rport *)&rp[1]; | |
557 | ||
558 | io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; | |
559 | if (!io_req) { | |
560 | QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n"); | |
561 | rc = SUCCESS; | |
562 | goto out; | |
563 | } | |
564 | ||
565 | if (!test_bit(QEDF_CMD_OUTSTANDING, &io_req->flags) || | |
566 | test_bit(QEDF_CMD_IN_CLEANUP, &io_req->flags) || | |
567 | test_bit(QEDF_CMD_IN_ABORT, &io_req->flags)) { | |
568 | QEDF_ERR(&(qedf->dbg_ctx), "io_req xid=0x%x already in " | |
569 | "cleanup or abort processing or already " | |
570 | "completed.\n", io_req->xid); | |
571 | rc = SUCCESS; | |
572 | goto out; | |
573 | } | |
574 | ||
575 | QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x " | |
576 | "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx); | |
577 | ||
578 | if (qedf->stop_io_on_error) { | |
579 | qedf_stop_all_io(qedf); | |
580 | rc = SUCCESS; | |
581 | goto out; | |
582 | } | |
583 | ||
584 | init_completion(&io_req->abts_done); | |
585 | rval = qedf_initiate_abts(io_req, true); | |
586 | if (rval) { | |
587 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); | |
588 | goto out; | |
589 | } | |
590 | ||
591 | wait_for_completion(&io_req->abts_done); | |
592 | ||
593 | if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || | |
594 | io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || | |
595 | io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { | |
596 | /* | |
597 | * If we get a reponse to the abort this is success from | |
598 | * the perspective that all references to the command have | |
599 | * been removed from the driver and firmware | |
600 | */ | |
601 | rc = SUCCESS; | |
602 | } else { | |
603 | /* If the abort and cleanup failed then return a failure */ | |
604 | rc = FAILED; | |
605 | } | |
606 | ||
607 | if (rc == SUCCESS) | |
608 | QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", | |
609 | io_req->xid); | |
610 | else | |
611 | QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", | |
612 | io_req->xid); | |
613 | ||
614 | out: | |
615 | return rc; | |
616 | } | |
617 | ||
618 | static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) | |
619 | { | |
620 | QEDF_ERR(NULL, "TARGET RESET Issued..."); | |
621 | return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); | |
622 | } | |
623 | ||
624 | static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) | |
625 | { | |
626 | QEDF_ERR(NULL, "LUN RESET Issued...\n"); | |
627 | return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); | |
628 | } | |
629 | ||
630 | void qedf_wait_for_upload(struct qedf_ctx *qedf) | |
631 | { | |
632 | while (1) { | |
633 | if (atomic_read(&qedf->num_offloads)) | |
634 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
635 | "Waiting for all uploads to complete.\n"); | |
636 | else | |
637 | break; | |
638 | msleep(500); | |
639 | } | |
640 | } | |
641 | ||
642 | /* Reset the host by gracefully logging out and then logging back in */ | |
643 | static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) | |
644 | { | |
645 | struct fc_lport *lport; | |
646 | struct qedf_ctx *qedf; | |
647 | ||
648 | lport = shost_priv(sc_cmd->device->host); | |
649 | ||
650 | if (lport->vport) { | |
651 | QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); | |
652 | return SUCCESS; | |
653 | } | |
654 | ||
655 | qedf = (struct qedf_ctx *)lport_priv(lport); | |
656 | ||
657 | if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || | |
658 | test_bit(QEDF_UNLOADING, &qedf->flags) || | |
659 | test_bit(QEDF_DBG_STOP_IO, &qedf->flags)) | |
660 | return FAILED; | |
661 | ||
662 | QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); | |
663 | ||
664 | /* For host reset, essentially do a soft link up/down */ | |
665 | atomic_set(&qedf->link_state, QEDF_LINK_DOWN); | |
666 | atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); | |
667 | queue_delayed_work(qedf->link_update_wq, &qedf->link_update, | |
668 | 0); | |
669 | qedf_wait_for_upload(qedf); | |
670 | atomic_set(&qedf->link_state, QEDF_LINK_UP); | |
671 | qedf->vlan_id = 0; | |
672 | queue_delayed_work(qedf->link_update_wq, &qedf->link_update, | |
673 | 0); | |
674 | ||
675 | return SUCCESS; | |
676 | } | |
677 | ||
678 | static int qedf_slave_configure(struct scsi_device *sdev) | |
679 | { | |
680 | if (qedf_queue_depth) { | |
681 | scsi_change_queue_depth(sdev, qedf_queue_depth); | |
682 | } | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | static struct scsi_host_template qedf_host_template = { | |
688 | .module = THIS_MODULE, | |
689 | .name = QEDF_MODULE_NAME, | |
690 | .this_id = -1, | |
691 | .cmd_per_lun = 3, | |
692 | .use_clustering = ENABLE_CLUSTERING, | |
693 | .max_sectors = 0xffff, | |
694 | .queuecommand = qedf_queuecommand, | |
695 | .shost_attrs = qedf_host_attrs, | |
696 | .eh_abort_handler = qedf_eh_abort, | |
697 | .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ | |
698 | .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ | |
699 | .eh_host_reset_handler = qedf_eh_host_reset, | |
700 | .slave_configure = qedf_slave_configure, | |
701 | .dma_boundary = QED_HW_DMA_BOUNDARY, | |
702 | .sg_tablesize = QEDF_MAX_BDS_PER_CMD, | |
703 | .can_queue = FCOE_PARAMS_NUM_TASKS, | |
704 | }; | |
705 | ||
706 | static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) | |
707 | { | |
708 | int rc; | |
709 | ||
710 | spin_lock(&qedf_global_lock); | |
711 | rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); | |
712 | spin_unlock(&qedf_global_lock); | |
713 | ||
714 | return rc; | |
715 | } | |
716 | ||
717 | static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) | |
718 | { | |
719 | struct qedf_rport *fcport; | |
720 | struct fc_rport_priv *rdata; | |
721 | ||
722 | rcu_read_lock(); | |
723 | list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { | |
724 | rdata = fcport->rdata; | |
725 | if (rdata == NULL) | |
726 | continue; | |
727 | if (rdata->ids.port_id == port_id) { | |
728 | rcu_read_unlock(); | |
729 | return fcport; | |
730 | } | |
731 | } | |
732 | rcu_read_unlock(); | |
733 | ||
734 | /* Return NULL to caller to let them know fcport was not found */ | |
735 | return NULL; | |
736 | } | |
737 | ||
738 | /* Transmits an ELS frame over an offloaded session */ | |
739 | static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) | |
740 | { | |
741 | struct fc_frame_header *fh; | |
742 | int rc = 0; | |
743 | ||
744 | fh = fc_frame_header_get(fp); | |
745 | if ((fh->fh_type == FC_TYPE_ELS) && | |
746 | (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { | |
747 | switch (fc_frame_payload_op(fp)) { | |
748 | case ELS_ADISC: | |
749 | qedf_send_adisc(fcport, fp); | |
750 | rc = 1; | |
751 | break; | |
752 | } | |
753 | } | |
754 | ||
755 | return rc; | |
756 | } | |
757 | ||
758 | /** | |
759 | * qedf_xmit - qedf FCoE frame transmit function | |
760 | * | |
761 | */ | |
762 | static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) | |
763 | { | |
764 | struct fc_lport *base_lport; | |
765 | struct qedf_ctx *qedf; | |
766 | struct ethhdr *eh; | |
767 | struct fcoe_crc_eof *cp; | |
768 | struct sk_buff *skb; | |
769 | struct fc_frame_header *fh; | |
770 | struct fcoe_hdr *hp; | |
771 | u8 sof, eof; | |
772 | u32 crc; | |
773 | unsigned int hlen, tlen, elen; | |
774 | int wlen; | |
775 | struct fc_stats *stats; | |
776 | struct fc_lport *tmp_lport; | |
777 | struct fc_lport *vn_port = NULL; | |
778 | struct qedf_rport *fcport; | |
779 | int rc; | |
780 | u16 vlan_tci = 0; | |
781 | ||
782 | qedf = (struct qedf_ctx *)lport_priv(lport); | |
783 | ||
784 | fh = fc_frame_header_get(fp); | |
785 | skb = fp_skb(fp); | |
786 | ||
787 | /* Filter out traffic to other NPIV ports on the same host */ | |
788 | if (lport->vport) | |
789 | base_lport = shost_priv(vport_to_shost(lport->vport)); | |
790 | else | |
791 | base_lport = lport; | |
792 | ||
793 | /* Flag if the destination is the base port */ | |
794 | if (base_lport->port_id == ntoh24(fh->fh_d_id)) { | |
795 | vn_port = base_lport; | |
796 | } else { | |
797 | /* Got through the list of vports attached to the base_lport | |
798 | * and see if we have a match with the destination address. | |
799 | */ | |
800 | list_for_each_entry(tmp_lport, &base_lport->vports, list) { | |
801 | if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { | |
802 | vn_port = tmp_lport; | |
803 | break; | |
804 | } | |
805 | } | |
806 | } | |
807 | if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { | |
808 | struct fc_rport_priv *rdata = NULL; | |
809 | ||
810 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, | |
811 | "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); | |
812 | kfree_skb(skb); | |
813 | rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); | |
814 | if (rdata) | |
815 | rdata->retries = lport->max_rport_retry_count; | |
816 | return -EINVAL; | |
817 | } | |
818 | /* End NPIV filtering */ | |
819 | ||
820 | if (!qedf->ctlr.sel_fcf) { | |
821 | kfree_skb(skb); | |
822 | return 0; | |
823 | } | |
824 | ||
825 | if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { | |
826 | QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); | |
827 | kfree_skb(skb); | |
828 | return 0; | |
829 | } | |
830 | ||
831 | if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { | |
832 | QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); | |
833 | kfree_skb(skb); | |
834 | return 0; | |
835 | } | |
836 | ||
837 | if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { | |
838 | if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) | |
839 | return 0; | |
840 | } | |
841 | ||
842 | /* Check to see if this needs to be sent on an offloaded session */ | |
843 | fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); | |
844 | ||
845 | if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
846 | rc = qedf_xmit_l2_frame(fcport, fp); | |
847 | /* | |
848 | * If the frame was successfully sent over the middle path | |
849 | * then do not try to also send it over the LL2 path | |
850 | */ | |
851 | if (rc) | |
852 | return 0; | |
853 | } | |
854 | ||
855 | sof = fr_sof(fp); | |
856 | eof = fr_eof(fp); | |
857 | ||
858 | elen = sizeof(struct ethhdr); | |
859 | hlen = sizeof(struct fcoe_hdr); | |
860 | tlen = sizeof(struct fcoe_crc_eof); | |
861 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; | |
862 | ||
863 | skb->ip_summed = CHECKSUM_NONE; | |
864 | crc = fcoe_fc_crc(fp); | |
865 | ||
866 | /* copy port crc and eof to the skb buff */ | |
867 | if (skb_is_nonlinear(skb)) { | |
868 | skb_frag_t *frag; | |
869 | ||
870 | if (qedf_get_paged_crc_eof(skb, tlen)) { | |
871 | kfree_skb(skb); | |
872 | return -ENOMEM; | |
873 | } | |
874 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; | |
875 | cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; | |
876 | } else { | |
4df864c1 | 877 | cp = skb_put(skb, tlen); |
61d8658b DC |
878 | } |
879 | ||
880 | memset(cp, 0, sizeof(*cp)); | |
881 | cp->fcoe_eof = eof; | |
882 | cp->fcoe_crc32 = cpu_to_le32(~crc); | |
883 | if (skb_is_nonlinear(skb)) { | |
884 | kunmap_atomic(cp); | |
885 | cp = NULL; | |
886 | } | |
887 | ||
888 | ||
889 | /* adjust skb network/transport offsets to match mac/fcoe/port */ | |
890 | skb_push(skb, elen + hlen); | |
891 | skb_reset_mac_header(skb); | |
892 | skb_reset_network_header(skb); | |
893 | skb->mac_len = elen; | |
894 | skb->protocol = htons(ETH_P_FCOE); | |
895 | ||
896 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); | |
897 | ||
898 | /* fill up mac and fcoe headers */ | |
899 | eh = eth_hdr(skb); | |
900 | eh->h_proto = htons(ETH_P_FCOE); | |
901 | if (qedf->ctlr.map_dest) | |
902 | fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); | |
903 | else | |
904 | /* insert GW address */ | |
905 | ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); | |
906 | ||
907 | /* Set the source MAC address */ | |
908 | fc_fcoe_set_mac(eh->h_source, fh->fh_s_id); | |
909 | ||
910 | hp = (struct fcoe_hdr *)(eh + 1); | |
911 | memset(hp, 0, sizeof(*hp)); | |
912 | if (FC_FCOE_VER) | |
913 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); | |
914 | hp->fcoe_sof = sof; | |
915 | ||
916 | /*update tx stats */ | |
917 | stats = per_cpu_ptr(lport->stats, get_cpu()); | |
918 | stats->TxFrames++; | |
919 | stats->TxWords += wlen; | |
920 | put_cpu(); | |
921 | ||
922 | /* Get VLAN ID from skb for printing purposes */ | |
923 | __vlan_hwaccel_get_tag(skb, &vlan_tci); | |
924 | ||
925 | /* send down to lld */ | |
926 | fr_dev(fp) = lport; | |
927 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " | |
928 | "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", | |
929 | ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, | |
930 | vlan_tci); | |
931 | if (qedf_dump_frames) | |
932 | print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, | |
933 | 1, skb->data, skb->len, false); | |
934 | qed_ops->ll2->start_xmit(qedf->cdev, skb); | |
935 | ||
936 | return 0; | |
937 | } | |
938 | ||
939 | static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) | |
940 | { | |
941 | int rval = 0; | |
942 | u32 *pbl; | |
943 | dma_addr_t page; | |
944 | int num_pages; | |
945 | ||
946 | /* Calculate appropriate queue and PBL sizes */ | |
947 | fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); | |
948 | fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); | |
949 | fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * | |
950 | sizeof(void *); | |
951 | fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; | |
952 | ||
953 | fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, | |
954 | &fcport->sq_dma, GFP_KERNEL); | |
955 | if (!fcport->sq) { | |
956 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send " | |
957 | "queue.\n"); | |
958 | rval = 1; | |
959 | goto out; | |
960 | } | |
961 | memset(fcport->sq, 0, fcport->sq_mem_size); | |
962 | ||
963 | fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, | |
964 | fcport->sq_pbl_size, &fcport->sq_pbl_dma, GFP_KERNEL); | |
965 | if (!fcport->sq_pbl) { | |
966 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send " | |
967 | "queue PBL.\n"); | |
968 | rval = 1; | |
969 | goto out_free_sq; | |
970 | } | |
971 | memset(fcport->sq_pbl, 0, fcport->sq_pbl_size); | |
972 | ||
973 | /* Create PBL */ | |
974 | num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; | |
975 | page = fcport->sq_dma; | |
976 | pbl = (u32 *)fcport->sq_pbl; | |
977 | ||
978 | while (num_pages--) { | |
979 | *pbl = U64_LO(page); | |
980 | pbl++; | |
981 | *pbl = U64_HI(page); | |
982 | pbl++; | |
983 | page += QEDF_PAGE_SIZE; | |
984 | } | |
985 | ||
986 | return rval; | |
987 | ||
988 | out_free_sq: | |
989 | dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, | |
990 | fcport->sq_dma); | |
991 | out: | |
992 | return rval; | |
993 | } | |
994 | ||
995 | static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) | |
996 | { | |
997 | if (fcport->sq_pbl) | |
998 | dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, | |
999 | fcport->sq_pbl, fcport->sq_pbl_dma); | |
1000 | if (fcport->sq) | |
1001 | dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, | |
1002 | fcport->sq, fcport->sq_dma); | |
1003 | } | |
1004 | ||
1005 | static int qedf_offload_connection(struct qedf_ctx *qedf, | |
1006 | struct qedf_rport *fcport) | |
1007 | { | |
1008 | struct qed_fcoe_params_offload conn_info; | |
1009 | u32 port_id; | |
1010 | u8 lport_src_id[3]; | |
1011 | int rval; | |
1012 | uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); | |
1013 | ||
1014 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " | |
1015 | "portid=%06x.\n", fcport->rdata->ids.port_id); | |
1016 | rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, | |
1017 | &fcport->fw_cid, &fcport->p_doorbell); | |
1018 | if (rval) { | |
1019 | QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " | |
1020 | "for portid=%06x.\n", fcport->rdata->ids.port_id); | |
1021 | rval = 1; /* For some reason qed returns 0 on failure here */ | |
1022 | goto out; | |
1023 | } | |
1024 | ||
1025 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " | |
1026 | "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, | |
1027 | fcport->fw_cid, fcport->handle); | |
1028 | ||
1029 | memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); | |
1030 | ||
1031 | /* Fill in the offload connection info */ | |
1032 | conn_info.sq_pbl_addr = fcport->sq_pbl_dma; | |
1033 | ||
1034 | conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); | |
1035 | conn_info.sq_next_page_addr = | |
1036 | (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); | |
1037 | ||
1038 | /* Need to use our FCoE MAC for the offload session */ | |
1039 | port_id = fc_host_port_id(qedf->lport->host); | |
1040 | lport_src_id[2] = (port_id & 0x000000FF); | |
1041 | lport_src_id[1] = (port_id & 0x0000FF00) >> 8; | |
1042 | lport_src_id[0] = (port_id & 0x00FF0000) >> 16; | |
1043 | fc_fcoe_set_mac(conn_info.src_mac, lport_src_id); | |
1044 | ||
1045 | ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); | |
1046 | ||
1047 | conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; | |
1048 | conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; | |
1049 | conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ | |
1050 | conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; | |
1051 | ||
1052 | /* Set VLAN data */ | |
1053 | conn_info.vlan_tag = qedf->vlan_id << | |
1054 | FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; | |
1055 | conn_info.vlan_tag |= | |
1056 | qedf_default_prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; | |
1057 | conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << | |
1058 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); | |
1059 | ||
1060 | /* Set host port source id */ | |
1061 | port_id = fc_host_port_id(qedf->lport->host); | |
1062 | fcport->sid = port_id; | |
1063 | conn_info.s_id.addr_hi = (port_id & 0x000000FF); | |
1064 | conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; | |
1065 | conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; | |
1066 | ||
1067 | conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; | |
1068 | ||
1069 | /* Set remote port destination id */ | |
1070 | port_id = fcport->rdata->rport->port_id; | |
1071 | conn_info.d_id.addr_hi = (port_id & 0x000000FF); | |
1072 | conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; | |
1073 | conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; | |
1074 | ||
1075 | conn_info.def_q_idx = 0; /* Default index for send queue? */ | |
1076 | ||
1077 | /* Set FC-TAPE specific flags if needed */ | |
1078 | if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { | |
1079 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, | |
1080 | "Enable CONF, REC for portid=%06x.\n", | |
1081 | fcport->rdata->ids.port_id); | |
1082 | conn_info.flags |= 1 << | |
1083 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; | |
1084 | conn_info.flags |= | |
1085 | ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << | |
1086 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; | |
1087 | } | |
1088 | ||
1089 | rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); | |
1090 | if (rval) { | |
1091 | QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " | |
1092 | "for portid=%06x.\n", fcport->rdata->ids.port_id); | |
1093 | goto out_free_conn; | |
1094 | } else | |
1095 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " | |
1096 | "succeeded portid=%06x total_sqe=%d.\n", | |
1097 | fcport->rdata->ids.port_id, total_sqe); | |
1098 | ||
1099 | spin_lock_init(&fcport->rport_lock); | |
1100 | atomic_set(&fcport->free_sqes, total_sqe); | |
1101 | return 0; | |
1102 | out_free_conn: | |
1103 | qed_ops->release_conn(qedf->cdev, fcport->handle); | |
1104 | out: | |
1105 | return rval; | |
1106 | } | |
1107 | ||
1108 | #define QEDF_TERM_BUFF_SIZE 10 | |
1109 | static void qedf_upload_connection(struct qedf_ctx *qedf, | |
1110 | struct qedf_rport *fcport) | |
1111 | { | |
1112 | void *term_params; | |
1113 | dma_addr_t term_params_dma; | |
1114 | ||
1115 | /* Term params needs to be a DMA coherent buffer as qed shared the | |
1116 | * physical DMA address with the firmware. The buffer may be used in | |
1117 | * the receive path so we may eventually have to move this. | |
1118 | */ | |
1119 | term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, | |
1120 | &term_params_dma, GFP_KERNEL); | |
1121 | ||
1122 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " | |
1123 | "port_id=%06x.\n", fcport->rdata->ids.port_id); | |
1124 | ||
1125 | qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); | |
1126 | qed_ops->release_conn(qedf->cdev, fcport->handle); | |
1127 | ||
1128 | dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, | |
1129 | term_params_dma); | |
1130 | } | |
1131 | ||
1132 | static void qedf_cleanup_fcport(struct qedf_ctx *qedf, | |
1133 | struct qedf_rport *fcport) | |
1134 | { | |
1135 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", | |
1136 | fcport->rdata->ids.port_id); | |
1137 | ||
1138 | /* Flush any remaining i/o's before we upload the connection */ | |
1139 | qedf_flush_active_ios(fcport, -1); | |
1140 | ||
1141 | if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) | |
1142 | qedf_upload_connection(qedf, fcport); | |
1143 | qedf_free_sq(qedf, fcport); | |
1144 | fcport->rdata = NULL; | |
1145 | fcport->qedf = NULL; | |
1146 | } | |
1147 | ||
1148 | /** | |
1149 | * This event_callback is called after successful completion of libfc | |
1150 | * initiated target login. qedf can proceed with initiating the session | |
1151 | * establishment. | |
1152 | */ | |
1153 | static void qedf_rport_event_handler(struct fc_lport *lport, | |
1154 | struct fc_rport_priv *rdata, | |
1155 | enum fc_rport_event event) | |
1156 | { | |
1157 | struct qedf_ctx *qedf = lport_priv(lport); | |
1158 | struct fc_rport *rport = rdata->rport; | |
1159 | struct fc_rport_libfc_priv *rp; | |
1160 | struct qedf_rport *fcport; | |
1161 | u32 port_id; | |
1162 | int rval; | |
1163 | unsigned long flags; | |
1164 | ||
1165 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " | |
1166 | "port_id = 0x%x\n", event, rdata->ids.port_id); | |
1167 | ||
1168 | switch (event) { | |
1169 | case RPORT_EV_READY: | |
1170 | if (!rport) { | |
1171 | QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | rp = rport->dd_data; | |
1176 | fcport = (struct qedf_rport *)&rp[1]; | |
1177 | fcport->qedf = qedf; | |
1178 | ||
1179 | if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { | |
1180 | QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " | |
1181 | "portid=0x%x as max number of offloaded sessions " | |
1182 | "reached.\n", rdata->ids.port_id); | |
1183 | return; | |
1184 | } | |
1185 | ||
1186 | /* | |
1187 | * Don't try to offload the session again. Can happen when we | |
1188 | * get an ADISC | |
1189 | */ | |
1190 | if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
1191 | QEDF_WARN(&(qedf->dbg_ctx), "Session already " | |
1192 | "offloaded, portid=0x%x.\n", | |
1193 | rdata->ids.port_id); | |
1194 | return; | |
1195 | } | |
1196 | ||
1197 | if (rport->port_id == FC_FID_DIR_SERV) { | |
1198 | /* | |
1199 | * qedf_rport structure doesn't exist for | |
1200 | * directory server. | |
1201 | * We should not come here, as lport will | |
1202 | * take care of fabric login | |
1203 | */ | |
1204 | QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " | |
1205 | "exist for dir server port_id=%x\n", | |
1206 | rdata->ids.port_id); | |
1207 | break; | |
1208 | } | |
1209 | ||
1210 | if (rdata->spp_type != FC_TYPE_FCP) { | |
1211 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1212 | "Not offlading since since spp type isn't FCP\n"); | |
1213 | break; | |
1214 | } | |
1215 | if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { | |
1216 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1217 | "Not FCP target so not offloading\n"); | |
1218 | break; | |
1219 | } | |
1220 | ||
1221 | fcport->rdata = rdata; | |
1222 | fcport->rport = rport; | |
1223 | ||
1224 | rval = qedf_alloc_sq(qedf, fcport); | |
1225 | if (rval) { | |
1226 | qedf_cleanup_fcport(qedf, fcport); | |
1227 | break; | |
1228 | } | |
1229 | ||
1230 | /* Set device type */ | |
1231 | if (rdata->flags & FC_RP_FLAGS_RETRY && | |
1232 | rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && | |
1233 | !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { | |
1234 | fcport->dev_type = QEDF_RPORT_TYPE_TAPE; | |
1235 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1236 | "portid=%06x is a TAPE device.\n", | |
1237 | rdata->ids.port_id); | |
1238 | } else { | |
1239 | fcport->dev_type = QEDF_RPORT_TYPE_DISK; | |
1240 | } | |
1241 | ||
1242 | rval = qedf_offload_connection(qedf, fcport); | |
1243 | if (rval) { | |
1244 | qedf_cleanup_fcport(qedf, fcport); | |
1245 | break; | |
1246 | } | |
1247 | ||
1248 | /* Add fcport to list of qedf_ctx list of offloaded ports */ | |
1249 | spin_lock_irqsave(&qedf->hba_lock, flags); | |
1250 | list_add_rcu(&fcport->peers, &qedf->fcports); | |
1251 | spin_unlock_irqrestore(&qedf->hba_lock, flags); | |
1252 | ||
1253 | /* | |
1254 | * Set the session ready bit to let everyone know that this | |
1255 | * connection is ready for I/O | |
1256 | */ | |
1257 | set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); | |
1258 | atomic_inc(&qedf->num_offloads); | |
1259 | ||
1260 | break; | |
1261 | case RPORT_EV_LOGO: | |
1262 | case RPORT_EV_FAILED: | |
1263 | case RPORT_EV_STOP: | |
1264 | port_id = rdata->ids.port_id; | |
1265 | if (port_id == FC_FID_DIR_SERV) | |
1266 | break; | |
1267 | ||
1268 | if (!rport) { | |
1269 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1270 | "port_id=%x - rport notcreated Yet!!\n", port_id); | |
1271 | break; | |
1272 | } | |
1273 | rp = rport->dd_data; | |
1274 | /* | |
1275 | * Perform session upload. Note that rdata->peers is already | |
1276 | * removed from disc->rports list before we get this event. | |
1277 | */ | |
1278 | fcport = (struct qedf_rport *)&rp[1]; | |
1279 | ||
1280 | /* Only free this fcport if it is offloaded already */ | |
1281 | if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
1282 | set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); | |
1283 | qedf_cleanup_fcport(qedf, fcport); | |
1284 | ||
1285 | /* | |
1286 | * Remove fcport to list of qedf_ctx list of offloaded | |
1287 | * ports | |
1288 | */ | |
1289 | spin_lock_irqsave(&qedf->hba_lock, flags); | |
1290 | list_del_rcu(&fcport->peers); | |
1291 | spin_unlock_irqrestore(&qedf->hba_lock, flags); | |
1292 | ||
1293 | clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, | |
1294 | &fcport->flags); | |
1295 | atomic_dec(&qedf->num_offloads); | |
1296 | } | |
1297 | ||
1298 | break; | |
1299 | ||
1300 | case RPORT_EV_NONE: | |
1301 | break; | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | static void qedf_abort_io(struct fc_lport *lport) | |
1306 | { | |
1307 | /* NO-OP but need to fill in the template */ | |
1308 | } | |
1309 | ||
1310 | static void qedf_fcp_cleanup(struct fc_lport *lport) | |
1311 | { | |
1312 | /* | |
1313 | * NO-OP but need to fill in template to prevent a NULL | |
1314 | * function pointer dereference during link down. I/Os | |
1315 | * will be flushed when port is uploaded. | |
1316 | */ | |
1317 | } | |
1318 | ||
1319 | static struct libfc_function_template qedf_lport_template = { | |
1320 | .frame_send = qedf_xmit, | |
1321 | .fcp_abort_io = qedf_abort_io, | |
1322 | .fcp_cleanup = qedf_fcp_cleanup, | |
1323 | .rport_event_callback = qedf_rport_event_handler, | |
1324 | .elsct_send = qedf_elsct_send, | |
1325 | }; | |
1326 | ||
1327 | static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) | |
1328 | { | |
1329 | fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO); | |
1330 | ||
1331 | qedf->ctlr.send = qedf_fip_send; | |
1332 | qedf->ctlr.update_mac = qedf_update_src_mac; | |
1333 | qedf->ctlr.get_src_addr = qedf_get_src_mac; | |
1334 | ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); | |
1335 | } | |
1336 | ||
1337 | static int qedf_lport_setup(struct qedf_ctx *qedf) | |
1338 | { | |
1339 | struct fc_lport *lport = qedf->lport; | |
1340 | ||
1341 | lport->link_up = 0; | |
1342 | lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; | |
1343 | lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; | |
1344 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | | |
1345 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
1346 | lport->boot_time = jiffies; | |
1347 | lport->e_d_tov = 2 * 1000; | |
1348 | lport->r_a_tov = 10 * 1000; | |
1349 | ||
1350 | /* Set NPIV support */ | |
1351 | lport->does_npiv = 1; | |
1352 | fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; | |
1353 | ||
1354 | fc_set_wwnn(lport, qedf->wwnn); | |
1355 | fc_set_wwpn(lport, qedf->wwpn); | |
1356 | ||
1357 | fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0); | |
1358 | ||
1359 | /* Allocate the exchange manager */ | |
1360 | fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1, | |
1361 | qedf->max_els_xid, NULL); | |
1362 | ||
1363 | if (fc_lport_init_stats(lport)) | |
1364 | return -ENOMEM; | |
1365 | ||
1366 | /* Finish lport config */ | |
1367 | fc_lport_config(lport); | |
1368 | ||
1369 | /* Set max frame size */ | |
1370 | fc_set_mfs(lport, QEDF_MFS); | |
1371 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1372 | ||
1373 | /* Set default dev_loss_tmo based on module parameter */ | |
1374 | fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; | |
1375 | ||
1376 | /* Set symbolic node name */ | |
1377 | snprintf(fc_host_symbolic_name(lport->host), 256, | |
1378 | "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); | |
1379 | ||
1380 | return 0; | |
1381 | } | |
1382 | ||
1383 | /* | |
1384 | * NPIV functions | |
1385 | */ | |
1386 | ||
1387 | static int qedf_vport_libfc_config(struct fc_vport *vport, | |
1388 | struct fc_lport *lport) | |
1389 | { | |
1390 | lport->link_up = 0; | |
1391 | lport->qfull = 0; | |
1392 | lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; | |
1393 | lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; | |
1394 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | | |
1395 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
1396 | lport->boot_time = jiffies; | |
1397 | lport->e_d_tov = 2 * 1000; | |
1398 | lport->r_a_tov = 10 * 1000; | |
1399 | lport->does_npiv = 1; /* Temporary until we add NPIV support */ | |
1400 | ||
1401 | /* Allocate stats for vport */ | |
1402 | if (fc_lport_init_stats(lport)) | |
1403 | return -ENOMEM; | |
1404 | ||
1405 | /* Finish lport config */ | |
1406 | fc_lport_config(lport); | |
1407 | ||
1408 | /* offload related configuration */ | |
1409 | lport->crc_offload = 0; | |
1410 | lport->seq_offload = 0; | |
1411 | lport->lro_enabled = 0; | |
1412 | lport->lro_xid = 0; | |
1413 | lport->lso_max = 0; | |
1414 | ||
1415 | return 0; | |
1416 | } | |
1417 | ||
1418 | static int qedf_vport_create(struct fc_vport *vport, bool disabled) | |
1419 | { | |
1420 | struct Scsi_Host *shost = vport_to_shost(vport); | |
1421 | struct fc_lport *n_port = shost_priv(shost); | |
1422 | struct fc_lport *vn_port; | |
1423 | struct qedf_ctx *base_qedf = lport_priv(n_port); | |
1424 | struct qedf_ctx *vport_qedf; | |
1425 | ||
1426 | char buf[32]; | |
1427 | int rc = 0; | |
1428 | ||
1429 | rc = fcoe_validate_vport_create(vport); | |
1430 | if (rc) { | |
1431 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); | |
1432 | QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " | |
1433 | "WWPN (0x%s) already exists.\n", buf); | |
1434 | goto err1; | |
1435 | } | |
1436 | ||
1437 | if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { | |
1438 | QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " | |
1439 | "because link is not up.\n"); | |
1440 | rc = -EIO; | |
1441 | goto err1; | |
1442 | } | |
1443 | ||
1444 | vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); | |
1445 | if (!vn_port) { | |
1446 | QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " | |
1447 | "for vport.\n"); | |
1448 | rc = -ENOMEM; | |
1449 | goto err1; | |
1450 | } | |
1451 | ||
1452 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); | |
1453 | QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", | |
1454 | buf); | |
1455 | ||
1456 | /* Copy some fields from base_qedf */ | |
1457 | vport_qedf = lport_priv(vn_port); | |
1458 | memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); | |
1459 | ||
1460 | /* Set qedf data specific to this vport */ | |
1461 | vport_qedf->lport = vn_port; | |
1462 | /* Use same hba_lock as base_qedf */ | |
1463 | vport_qedf->hba_lock = base_qedf->hba_lock; | |
1464 | vport_qedf->pdev = base_qedf->pdev; | |
1465 | vport_qedf->cmd_mgr = base_qedf->cmd_mgr; | |
1466 | init_completion(&vport_qedf->flogi_compl); | |
1467 | INIT_LIST_HEAD(&vport_qedf->fcports); | |
1468 | ||
1469 | rc = qedf_vport_libfc_config(vport, vn_port); | |
1470 | if (rc) { | |
1471 | QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " | |
1472 | "for lport stats.\n"); | |
1473 | goto err2; | |
1474 | } | |
1475 | ||
1476 | fc_set_wwnn(vn_port, vport->node_name); | |
1477 | fc_set_wwpn(vn_port, vport->port_name); | |
1478 | vport_qedf->wwnn = vn_port->wwnn; | |
1479 | vport_qedf->wwpn = vn_port->wwpn; | |
1480 | ||
1481 | vn_port->host->transportt = qedf_fc_vport_transport_template; | |
1482 | vn_port->host->can_queue = QEDF_MAX_ELS_XID; | |
1483 | vn_port->host->max_lun = qedf_max_lun; | |
1484 | vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; | |
1485 | vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; | |
1486 | ||
1487 | rc = scsi_add_host(vn_port->host, &vport->dev); | |
1488 | if (rc) { | |
1489 | QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n"); | |
1490 | goto err2; | |
1491 | } | |
1492 | ||
1493 | /* Set default dev_loss_tmo based on module parameter */ | |
1494 | fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; | |
1495 | ||
1496 | /* Init libfc stuffs */ | |
1497 | memcpy(&vn_port->tt, &qedf_lport_template, | |
1498 | sizeof(qedf_lport_template)); | |
1499 | fc_exch_init(vn_port); | |
1500 | fc_elsct_init(vn_port); | |
1501 | fc_lport_init(vn_port); | |
1502 | fc_disc_init(vn_port); | |
1503 | fc_disc_config(vn_port, vn_port); | |
1504 | ||
1505 | ||
1506 | /* Allocate the exchange manager */ | |
1507 | shost = vport_to_shost(vport); | |
1508 | n_port = shost_priv(shost); | |
1509 | fc_exch_mgr_list_clone(n_port, vn_port); | |
1510 | ||
1511 | /* Set max frame size */ | |
1512 | fc_set_mfs(vn_port, QEDF_MFS); | |
1513 | ||
1514 | fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; | |
1515 | ||
1516 | if (disabled) { | |
1517 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
1518 | } else { | |
1519 | vn_port->boot_time = jiffies; | |
1520 | fc_fabric_login(vn_port); | |
1521 | fc_vport_setlink(vn_port); | |
1522 | } | |
1523 | ||
1524 | QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", | |
1525 | vn_port); | |
1526 | ||
1527 | /* Set up debug context for vport */ | |
1528 | vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; | |
1529 | vport_qedf->dbg_ctx.pdev = base_qedf->pdev; | |
1530 | ||
1531 | err2: | |
1532 | scsi_host_put(vn_port->host); | |
1533 | err1: | |
1534 | return rc; | |
1535 | } | |
1536 | ||
1537 | static int qedf_vport_destroy(struct fc_vport *vport) | |
1538 | { | |
1539 | struct Scsi_Host *shost = vport_to_shost(vport); | |
1540 | struct fc_lport *n_port = shost_priv(shost); | |
1541 | struct fc_lport *vn_port = vport->dd_data; | |
1542 | ||
1543 | mutex_lock(&n_port->lp_mutex); | |
1544 | list_del(&vn_port->list); | |
1545 | mutex_unlock(&n_port->lp_mutex); | |
1546 | ||
1547 | fc_fabric_logoff(vn_port); | |
1548 | fc_lport_destroy(vn_port); | |
1549 | ||
1550 | /* Detach from scsi-ml */ | |
1551 | fc_remove_host(vn_port->host); | |
1552 | scsi_remove_host(vn_port->host); | |
1553 | ||
1554 | /* | |
1555 | * Only try to release the exchange manager if the vn_port | |
1556 | * configuration is complete. | |
1557 | */ | |
1558 | if (vn_port->state == LPORT_ST_READY) | |
1559 | fc_exch_mgr_free(vn_port); | |
1560 | ||
1561 | /* Free memory used by statistical counters */ | |
1562 | fc_lport_free_stats(vn_port); | |
1563 | ||
1564 | /* Release Scsi_Host */ | |
1565 | if (vn_port->host) | |
1566 | scsi_host_put(vn_port->host); | |
1567 | ||
1568 | return 0; | |
1569 | } | |
1570 | ||
1571 | static int qedf_vport_disable(struct fc_vport *vport, bool disable) | |
1572 | { | |
1573 | struct fc_lport *lport = vport->dd_data; | |
1574 | ||
1575 | if (disable) { | |
1576 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
1577 | fc_fabric_logoff(lport); | |
1578 | } else { | |
1579 | lport->boot_time = jiffies; | |
1580 | fc_fabric_login(lport); | |
1581 | fc_vport_setlink(lport); | |
1582 | } | |
1583 | return 0; | |
1584 | } | |
1585 | ||
1586 | /* | |
1587 | * During removal we need to wait for all the vports associated with a port | |
1588 | * to be destroyed so we avoid a race condition where libfc is still trying | |
1589 | * to reap vports while the driver remove function has already reaped the | |
1590 | * driver contexts associated with the physical port. | |
1591 | */ | |
1592 | static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) | |
1593 | { | |
1594 | struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); | |
1595 | ||
1596 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, | |
1597 | "Entered.\n"); | |
1598 | while (fc_host->npiv_vports_inuse > 0) { | |
1599 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, | |
1600 | "Waiting for all vports to be reaped.\n"); | |
1601 | msleep(1000); | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | /** | |
1606 | * qedf_fcoe_reset - Resets the fcoe | |
1607 | * | |
1608 | * @shost: shost the reset is from | |
1609 | * | |
1610 | * Returns: always 0 | |
1611 | */ | |
1612 | static int qedf_fcoe_reset(struct Scsi_Host *shost) | |
1613 | { | |
1614 | struct fc_lport *lport = shost_priv(shost); | |
1615 | ||
1616 | fc_fabric_logoff(lport); | |
1617 | fc_fabric_login(lport); | |
1618 | return 0; | |
1619 | } | |
1620 | ||
1621 | static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host | |
1622 | *shost) | |
1623 | { | |
1624 | struct fc_host_statistics *qedf_stats; | |
1625 | struct fc_lport *lport = shost_priv(shost); | |
1626 | struct qedf_ctx *qedf = lport_priv(lport); | |
1627 | struct qed_fcoe_stats *fw_fcoe_stats; | |
1628 | ||
1629 | qedf_stats = fc_get_host_stats(shost); | |
1630 | ||
1631 | /* We don't collect offload stats for specific NPIV ports */ | |
1632 | if (lport->vport) | |
1633 | goto out; | |
1634 | ||
1635 | fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); | |
1636 | if (!fw_fcoe_stats) { | |
1637 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " | |
1638 | "fw_fcoe_stats.\n"); | |
1639 | goto out; | |
1640 | } | |
1641 | ||
1642 | /* Query firmware for offload stats */ | |
1643 | qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); | |
1644 | ||
1645 | /* | |
1646 | * The expectation is that we add our offload stats to the stats | |
1647 | * being maintained by libfc each time the fc_get_host_status callback | |
1648 | * is invoked. The additions are not carried over for each call to | |
1649 | * the fc_get_host_stats callback. | |
1650 | */ | |
1651 | qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + | |
1652 | fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + | |
1653 | fw_fcoe_stats->fcoe_tx_other_pkt_cnt; | |
1654 | qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + | |
1655 | fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + | |
1656 | fw_fcoe_stats->fcoe_rx_other_pkt_cnt; | |
1657 | qedf_stats->fcp_input_megabytes += | |
1658 | do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); | |
1659 | qedf_stats->fcp_output_megabytes += | |
1660 | do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); | |
1661 | qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; | |
1662 | qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; | |
1663 | qedf_stats->invalid_crc_count += | |
1664 | fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; | |
1665 | qedf_stats->dumped_frames = | |
1666 | fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; | |
1667 | qedf_stats->error_frames += | |
1668 | fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; | |
1669 | qedf_stats->fcp_input_requests += qedf->input_requests; | |
1670 | qedf_stats->fcp_output_requests += qedf->output_requests; | |
1671 | qedf_stats->fcp_control_requests += qedf->control_requests; | |
1672 | qedf_stats->fcp_packet_aborts += qedf->packet_aborts; | |
1673 | qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; | |
1674 | ||
1675 | kfree(fw_fcoe_stats); | |
1676 | out: | |
1677 | return qedf_stats; | |
1678 | } | |
1679 | ||
1680 | static struct fc_function_template qedf_fc_transport_fn = { | |
1681 | .show_host_node_name = 1, | |
1682 | .show_host_port_name = 1, | |
1683 | .show_host_supported_classes = 1, | |
1684 | .show_host_supported_fc4s = 1, | |
1685 | .show_host_active_fc4s = 1, | |
1686 | .show_host_maxframe_size = 1, | |
1687 | ||
1688 | .show_host_port_id = 1, | |
1689 | .show_host_supported_speeds = 1, | |
1690 | .get_host_speed = fc_get_host_speed, | |
1691 | .show_host_speed = 1, | |
1692 | .show_host_port_type = 1, | |
1693 | .get_host_port_state = fc_get_host_port_state, | |
1694 | .show_host_port_state = 1, | |
1695 | .show_host_symbolic_name = 1, | |
1696 | ||
1697 | /* | |
1698 | * Tell FC transport to allocate enough space to store the backpointer | |
1699 | * for the associate qedf_rport struct. | |
1700 | */ | |
1701 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + | |
1702 | sizeof(struct qedf_rport)), | |
1703 | .show_rport_maxframe_size = 1, | |
1704 | .show_rport_supported_classes = 1, | |
1705 | .show_host_fabric_name = 1, | |
1706 | .show_starget_node_name = 1, | |
1707 | .show_starget_port_name = 1, | |
1708 | .show_starget_port_id = 1, | |
1709 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
1710 | .show_rport_dev_loss_tmo = 1, | |
1711 | .get_fc_host_stats = qedf_fc_get_host_stats, | |
1712 | .issue_fc_host_lip = qedf_fcoe_reset, | |
1713 | .vport_create = qedf_vport_create, | |
1714 | .vport_delete = qedf_vport_destroy, | |
1715 | .vport_disable = qedf_vport_disable, | |
1716 | .bsg_request = fc_lport_bsg_request, | |
1717 | }; | |
1718 | ||
1719 | static struct fc_function_template qedf_fc_vport_transport_fn = { | |
1720 | .show_host_node_name = 1, | |
1721 | .show_host_port_name = 1, | |
1722 | .show_host_supported_classes = 1, | |
1723 | .show_host_supported_fc4s = 1, | |
1724 | .show_host_active_fc4s = 1, | |
1725 | .show_host_maxframe_size = 1, | |
1726 | .show_host_port_id = 1, | |
1727 | .show_host_supported_speeds = 1, | |
1728 | .get_host_speed = fc_get_host_speed, | |
1729 | .show_host_speed = 1, | |
1730 | .show_host_port_type = 1, | |
1731 | .get_host_port_state = fc_get_host_port_state, | |
1732 | .show_host_port_state = 1, | |
1733 | .show_host_symbolic_name = 1, | |
1734 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + | |
1735 | sizeof(struct qedf_rport)), | |
1736 | .show_rport_maxframe_size = 1, | |
1737 | .show_rport_supported_classes = 1, | |
1738 | .show_host_fabric_name = 1, | |
1739 | .show_starget_node_name = 1, | |
1740 | .show_starget_port_name = 1, | |
1741 | .show_starget_port_id = 1, | |
1742 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
1743 | .show_rport_dev_loss_tmo = 1, | |
1744 | .get_fc_host_stats = fc_get_host_stats, | |
1745 | .issue_fc_host_lip = qedf_fcoe_reset, | |
1746 | .bsg_request = fc_lport_bsg_request, | |
1747 | }; | |
1748 | ||
1749 | static bool qedf_fp_has_work(struct qedf_fastpath *fp) | |
1750 | { | |
1751 | struct qedf_ctx *qedf = fp->qedf; | |
1752 | struct global_queue *que; | |
1753 | struct qed_sb_info *sb_info = fp->sb_info; | |
1754 | struct status_block *sb = sb_info->sb_virt; | |
1755 | u16 prod_idx; | |
1756 | ||
1757 | /* Get the pointer to the global CQ this completion is on */ | |
1758 | que = qedf->global_queues[fp->sb_id]; | |
1759 | ||
1760 | /* Be sure all responses have been written to PI */ | |
1761 | rmb(); | |
1762 | ||
1763 | /* Get the current firmware producer index */ | |
1764 | prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; | |
1765 | ||
1766 | return (que->cq_prod_idx != prod_idx); | |
1767 | } | |
1768 | ||
1769 | /* | |
1770 | * Interrupt handler code. | |
1771 | */ | |
1772 | ||
1773 | /* Process completion queue and copy CQE contents for deferred processesing | |
1774 | * | |
1775 | * Return true if we should wake the I/O thread, false if not. | |
1776 | */ | |
1777 | static bool qedf_process_completions(struct qedf_fastpath *fp) | |
1778 | { | |
1779 | struct qedf_ctx *qedf = fp->qedf; | |
1780 | struct qed_sb_info *sb_info = fp->sb_info; | |
1781 | struct status_block *sb = sb_info->sb_virt; | |
1782 | struct global_queue *que; | |
1783 | u16 prod_idx; | |
1784 | struct fcoe_cqe *cqe; | |
1785 | struct qedf_io_work *io_work; | |
1786 | int num_handled = 0; | |
1787 | unsigned int cpu; | |
1788 | struct qedf_ioreq *io_req = NULL; | |
1789 | u16 xid; | |
1790 | u16 new_cqes; | |
1791 | u32 comp_type; | |
1792 | ||
1793 | /* Get the current firmware producer index */ | |
1794 | prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; | |
1795 | ||
1796 | /* Get the pointer to the global CQ this completion is on */ | |
1797 | que = qedf->global_queues[fp->sb_id]; | |
1798 | ||
1799 | /* Calculate the amount of new elements since last processing */ | |
1800 | new_cqes = (prod_idx >= que->cq_prod_idx) ? | |
1801 | (prod_idx - que->cq_prod_idx) : | |
1802 | 0x10000 - que->cq_prod_idx + prod_idx; | |
1803 | ||
1804 | /* Save producer index */ | |
1805 | que->cq_prod_idx = prod_idx; | |
1806 | ||
1807 | while (new_cqes) { | |
1808 | fp->completions++; | |
1809 | num_handled++; | |
1810 | cqe = &que->cq[que->cq_cons_idx]; | |
1811 | ||
1812 | comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & | |
1813 | FCOE_CQE_CQE_TYPE_MASK; | |
1814 | ||
1815 | /* | |
1816 | * Process unsolicited CQEs directly in the interrupt handler | |
1817 | * sine we need the fastpath ID | |
1818 | */ | |
1819 | if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { | |
1820 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, | |
1821 | "Unsolicated CQE.\n"); | |
1822 | qedf_process_unsol_compl(qedf, fp->sb_id, cqe); | |
1823 | /* | |
1824 | * Don't add a work list item. Increment consumer | |
1825 | * consumer index and move on. | |
1826 | */ | |
1827 | goto inc_idx; | |
1828 | } | |
1829 | ||
1830 | xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; | |
1831 | io_req = &qedf->cmd_mgr->cmds[xid]; | |
1832 | ||
1833 | /* | |
1834 | * Figure out which percpu thread we should queue this I/O | |
1835 | * on. | |
1836 | */ | |
1837 | if (!io_req) | |
1838 | /* If there is not io_req assocated with this CQE | |
1839 | * just queue it on CPU 0 | |
1840 | */ | |
1841 | cpu = 0; | |
1842 | else { | |
1843 | cpu = io_req->cpu; | |
1844 | io_req->int_cpu = smp_processor_id(); | |
1845 | } | |
1846 | ||
1847 | io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); | |
1848 | if (!io_work) { | |
1849 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " | |
1850 | "work for I/O completion.\n"); | |
1851 | continue; | |
1852 | } | |
1853 | memset(io_work, 0, sizeof(struct qedf_io_work)); | |
1854 | ||
1855 | INIT_WORK(&io_work->work, qedf_fp_io_handler); | |
1856 | ||
1857 | /* Copy contents of CQE for deferred processing */ | |
1858 | memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); | |
1859 | ||
1860 | io_work->qedf = fp->qedf; | |
1861 | io_work->fp = NULL; /* Only used for unsolicited frames */ | |
1862 | ||
1863 | queue_work_on(cpu, qedf_io_wq, &io_work->work); | |
1864 | ||
1865 | inc_idx: | |
1866 | que->cq_cons_idx++; | |
1867 | if (que->cq_cons_idx == fp->cq_num_entries) | |
1868 | que->cq_cons_idx = 0; | |
1869 | new_cqes--; | |
1870 | } | |
1871 | ||
1872 | return true; | |
1873 | } | |
1874 | ||
1875 | ||
1876 | /* MSI-X fastpath handler code */ | |
1877 | static irqreturn_t qedf_msix_handler(int irq, void *dev_id) | |
1878 | { | |
1879 | struct qedf_fastpath *fp = dev_id; | |
1880 | ||
1881 | if (!fp) { | |
1882 | QEDF_ERR(NULL, "fp is null.\n"); | |
1883 | return IRQ_HANDLED; | |
1884 | } | |
1885 | if (!fp->sb_info) { | |
1886 | QEDF_ERR(NULL, "fp->sb_info in null."); | |
1887 | return IRQ_HANDLED; | |
1888 | } | |
1889 | ||
1890 | /* | |
1891 | * Disable interrupts for this status block while we process new | |
1892 | * completions | |
1893 | */ | |
1894 | qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); | |
1895 | ||
1896 | while (1) { | |
1897 | qedf_process_completions(fp); | |
1898 | ||
1899 | if (qedf_fp_has_work(fp) == 0) { | |
1900 | /* Update the sb information */ | |
1901 | qed_sb_update_sb_idx(fp->sb_info); | |
1902 | ||
1903 | /* Check for more work */ | |
1904 | rmb(); | |
1905 | ||
1906 | if (qedf_fp_has_work(fp) == 0) { | |
1907 | /* Re-enable interrupts */ | |
1908 | qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); | |
1909 | return IRQ_HANDLED; | |
1910 | } | |
1911 | } | |
1912 | } | |
1913 | ||
1914 | /* Do we ever want to break out of above loop? */ | |
1915 | return IRQ_HANDLED; | |
1916 | } | |
1917 | ||
1918 | /* simd handler for MSI/INTa */ | |
1919 | static void qedf_simd_int_handler(void *cookie) | |
1920 | { | |
1921 | /* Cookie is qedf_ctx struct */ | |
1922 | struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; | |
1923 | ||
1924 | QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); | |
1925 | } | |
1926 | ||
1927 | #define QEDF_SIMD_HANDLER_NUM 0 | |
1928 | static void qedf_sync_free_irqs(struct qedf_ctx *qedf) | |
1929 | { | |
1930 | int i; | |
1931 | ||
1932 | if (qedf->int_info.msix_cnt) { | |
1933 | for (i = 0; i < qedf->int_info.used_cnt; i++) { | |
1934 | synchronize_irq(qedf->int_info.msix[i].vector); | |
1935 | irq_set_affinity_hint(qedf->int_info.msix[i].vector, | |
1936 | NULL); | |
1937 | irq_set_affinity_notifier(qedf->int_info.msix[i].vector, | |
1938 | NULL); | |
1939 | free_irq(qedf->int_info.msix[i].vector, | |
1940 | &qedf->fp_array[i]); | |
1941 | } | |
1942 | } else | |
1943 | qed_ops->common->simd_handler_clean(qedf->cdev, | |
1944 | QEDF_SIMD_HANDLER_NUM); | |
1945 | ||
1946 | qedf->int_info.used_cnt = 0; | |
1947 | qed_ops->common->set_fp_int(qedf->cdev, 0); | |
1948 | } | |
1949 | ||
1950 | static int qedf_request_msix_irq(struct qedf_ctx *qedf) | |
1951 | { | |
1952 | int i, rc, cpu; | |
1953 | ||
1954 | cpu = cpumask_first(cpu_online_mask); | |
1955 | for (i = 0; i < qedf->num_queues; i++) { | |
1956 | rc = request_irq(qedf->int_info.msix[i].vector, | |
1957 | qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]); | |
1958 | ||
1959 | if (rc) { | |
1960 | QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); | |
1961 | qedf_sync_free_irqs(qedf); | |
1962 | return rc; | |
1963 | } | |
1964 | ||
1965 | qedf->int_info.used_cnt++; | |
1966 | rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector, | |
1967 | get_cpu_mask(cpu)); | |
1968 | cpu = cpumask_next(cpu, cpu_online_mask); | |
1969 | } | |
1970 | ||
1971 | return 0; | |
1972 | } | |
1973 | ||
1974 | static int qedf_setup_int(struct qedf_ctx *qedf) | |
1975 | { | |
1976 | int rc = 0; | |
1977 | ||
1978 | /* | |
1979 | * Learn interrupt configuration | |
1980 | */ | |
1981 | rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); | |
1982 | ||
1983 | rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); | |
1984 | if (rc) | |
1985 | return 0; | |
1986 | ||
1987 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " | |
1988 | "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, | |
1989 | num_online_cpus()); | |
1990 | ||
1991 | if (qedf->int_info.msix_cnt) | |
1992 | return qedf_request_msix_irq(qedf); | |
1993 | ||
1994 | qed_ops->common->simd_handler_config(qedf->cdev, &qedf, | |
1995 | QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); | |
1996 | qedf->int_info.used_cnt = 1; | |
1997 | ||
1998 | return 0; | |
1999 | } | |
2000 | ||
2001 | /* Main function for libfc frame reception */ | |
2002 | static void qedf_recv_frame(struct qedf_ctx *qedf, | |
2003 | struct sk_buff *skb) | |
2004 | { | |
2005 | u32 fr_len; | |
2006 | struct fc_lport *lport; | |
2007 | struct fc_frame_header *fh; | |
2008 | struct fcoe_crc_eof crc_eof; | |
2009 | struct fc_frame *fp; | |
2010 | u8 *mac = NULL; | |
2011 | u8 *dest_mac = NULL; | |
2012 | struct fcoe_hdr *hp; | |
2013 | struct qedf_rport *fcport; | |
2014 | ||
2015 | lport = qedf->lport; | |
2016 | if (lport == NULL || lport->state == LPORT_ST_DISABLED) { | |
2017 | QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); | |
2018 | kfree_skb(skb); | |
2019 | return; | |
2020 | } | |
2021 | ||
2022 | if (skb_is_nonlinear(skb)) | |
2023 | skb_linearize(skb); | |
2024 | mac = eth_hdr(skb)->h_source; | |
2025 | dest_mac = eth_hdr(skb)->h_dest; | |
2026 | ||
2027 | /* Pull the header */ | |
2028 | hp = (struct fcoe_hdr *)skb->data; | |
2029 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
2030 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
2031 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); | |
2032 | ||
2033 | fp = (struct fc_frame *)skb; | |
2034 | fc_frame_init(fp); | |
2035 | fr_dev(fp) = lport; | |
2036 | fr_sof(fp) = hp->fcoe_sof; | |
2037 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { | |
2038 | kfree_skb(skb); | |
2039 | return; | |
2040 | } | |
2041 | fr_eof(fp) = crc_eof.fcoe_eof; | |
2042 | fr_crc(fp) = crc_eof.fcoe_crc32; | |
2043 | if (pskb_trim(skb, fr_len)) { | |
2044 | kfree_skb(skb); | |
2045 | return; | |
2046 | } | |
2047 | ||
2048 | fh = fc_frame_header_get(fp); | |
2049 | ||
2050 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && | |
2051 | fh->fh_type == FC_TYPE_FCP) { | |
2052 | /* Drop FCP data. We dont this in L2 path */ | |
2053 | kfree_skb(skb); | |
2054 | return; | |
2055 | } | |
2056 | if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && | |
2057 | fh->fh_type == FC_TYPE_ELS) { | |
2058 | switch (fc_frame_payload_op(fp)) { | |
2059 | case ELS_LOGO: | |
2060 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { | |
2061 | /* drop non-FIP LOGO */ | |
2062 | kfree_skb(skb); | |
2063 | return; | |
2064 | } | |
2065 | break; | |
2066 | } | |
2067 | } | |
2068 | ||
2069 | if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { | |
2070 | /* Drop incoming ABTS */ | |
2071 | kfree_skb(skb); | |
2072 | return; | |
2073 | } | |
2074 | ||
2075 | /* | |
2076 | * If a connection is uploading, drop incoming FCoE frames as there | |
2077 | * is a small window where we could try to return a frame while libfc | |
2078 | * is trying to clean things up. | |
2079 | */ | |
2080 | ||
2081 | /* Get fcport associated with d_id if it exists */ | |
2082 | fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); | |
2083 | ||
2084 | if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, | |
2085 | &fcport->flags)) { | |
2086 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, | |
2087 | "Connection uploading, dropping fp=%p.\n", fp); | |
2088 | kfree_skb(skb); | |
2089 | return; | |
2090 | } | |
2091 | ||
2092 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " | |
2093 | "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, | |
2094 | ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, | |
2095 | fh->fh_type); | |
2096 | if (qedf_dump_frames) | |
2097 | print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, | |
2098 | 1, skb->data, skb->len, false); | |
2099 | fc_exch_recv(lport, fp); | |
2100 | } | |
2101 | ||
2102 | static void qedf_ll2_process_skb(struct work_struct *work) | |
2103 | { | |
2104 | struct qedf_skb_work *skb_work = | |
2105 | container_of(work, struct qedf_skb_work, work); | |
2106 | struct qedf_ctx *qedf = skb_work->qedf; | |
2107 | struct sk_buff *skb = skb_work->skb; | |
2108 | struct ethhdr *eh; | |
2109 | ||
2110 | if (!qedf) { | |
2111 | QEDF_ERR(NULL, "qedf is NULL\n"); | |
2112 | goto err_out; | |
2113 | } | |
2114 | ||
2115 | eh = (struct ethhdr *)skb->data; | |
2116 | ||
2117 | /* Undo VLAN encapsulation */ | |
2118 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
2119 | memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); | |
2120 | eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN); | |
2121 | skb_reset_mac_header(skb); | |
2122 | } | |
2123 | ||
2124 | /* | |
2125 | * Process either a FIP frame or FCoE frame based on the | |
2126 | * protocol value. If it's not either just drop the | |
2127 | * frame. | |
2128 | */ | |
2129 | if (eh->h_proto == htons(ETH_P_FIP)) { | |
2130 | qedf_fip_recv(qedf, skb); | |
2131 | goto out; | |
2132 | } else if (eh->h_proto == htons(ETH_P_FCOE)) { | |
2133 | __skb_pull(skb, ETH_HLEN); | |
2134 | qedf_recv_frame(qedf, skb); | |
2135 | goto out; | |
2136 | } else | |
2137 | goto err_out; | |
2138 | ||
2139 | err_out: | |
2140 | kfree_skb(skb); | |
2141 | out: | |
2142 | kfree(skb_work); | |
2143 | return; | |
2144 | } | |
2145 | ||
2146 | static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, | |
2147 | u32 arg1, u32 arg2) | |
2148 | { | |
2149 | struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; | |
2150 | struct qedf_skb_work *skb_work; | |
2151 | ||
2152 | skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); | |
2153 | if (!skb_work) { | |
2154 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " | |
2155 | "dropping frame.\n"); | |
2156 | kfree_skb(skb); | |
2157 | return 0; | |
2158 | } | |
2159 | ||
2160 | INIT_WORK(&skb_work->work, qedf_ll2_process_skb); | |
2161 | skb_work->skb = skb; | |
2162 | skb_work->qedf = qedf; | |
2163 | queue_work(qedf->ll2_recv_wq, &skb_work->work); | |
2164 | ||
2165 | return 0; | |
2166 | } | |
2167 | ||
2168 | static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { | |
2169 | .rx_cb = qedf_ll2_rx, | |
2170 | .tx_cb = NULL, | |
2171 | }; | |
2172 | ||
2173 | /* Main thread to process I/O completions */ | |
2174 | void qedf_fp_io_handler(struct work_struct *work) | |
2175 | { | |
2176 | struct qedf_io_work *io_work = | |
2177 | container_of(work, struct qedf_io_work, work); | |
2178 | u32 comp_type; | |
2179 | ||
2180 | /* | |
2181 | * Deferred part of unsolicited CQE sends | |
2182 | * frame to libfc. | |
2183 | */ | |
2184 | comp_type = (io_work->cqe.cqe_data >> | |
2185 | FCOE_CQE_CQE_TYPE_SHIFT) & | |
2186 | FCOE_CQE_CQE_TYPE_MASK; | |
2187 | if (comp_type == FCOE_UNSOLIC_CQE_TYPE && | |
2188 | io_work->fp) | |
2189 | fc_exch_recv(io_work->qedf->lport, io_work->fp); | |
2190 | else | |
2191 | qedf_process_cqe(io_work->qedf, &io_work->cqe); | |
2192 | ||
2193 | kfree(io_work); | |
2194 | } | |
2195 | ||
2196 | static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, | |
2197 | struct qed_sb_info *sb_info, u16 sb_id) | |
2198 | { | |
2199 | struct status_block *sb_virt; | |
2200 | dma_addr_t sb_phys; | |
2201 | int ret; | |
2202 | ||
2203 | sb_virt = dma_alloc_coherent(&qedf->pdev->dev, | |
2204 | sizeof(struct status_block), &sb_phys, GFP_KERNEL); | |
2205 | ||
2206 | if (!sb_virt) { | |
2207 | QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " | |
2208 | "for id = %d.\n", sb_id); | |
2209 | return -ENOMEM; | |
2210 | } | |
2211 | ||
2212 | ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, | |
2213 | sb_id, QED_SB_TYPE_STORAGE); | |
2214 | ||
2215 | if (ret) { | |
2216 | QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " | |
2217 | "failed for id = %d.\n", sb_id); | |
2218 | return ret; | |
2219 | } | |
2220 | ||
2221 | return 0; | |
2222 | } | |
2223 | ||
2224 | static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) | |
2225 | { | |
2226 | if (sb_info->sb_virt) | |
2227 | dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), | |
2228 | (void *)sb_info->sb_virt, sb_info->sb_phys); | |
2229 | } | |
2230 | ||
2231 | static void qedf_destroy_sb(struct qedf_ctx *qedf) | |
2232 | { | |
2233 | int id; | |
2234 | struct qedf_fastpath *fp = NULL; | |
2235 | ||
2236 | for (id = 0; id < qedf->num_queues; id++) { | |
2237 | fp = &(qedf->fp_array[id]); | |
2238 | if (fp->sb_id == QEDF_SB_ID_NULL) | |
2239 | break; | |
2240 | qedf_free_sb(qedf, fp->sb_info); | |
2241 | kfree(fp->sb_info); | |
2242 | } | |
2243 | kfree(qedf->fp_array); | |
2244 | } | |
2245 | ||
2246 | static int qedf_prepare_sb(struct qedf_ctx *qedf) | |
2247 | { | |
2248 | int id; | |
2249 | struct qedf_fastpath *fp; | |
2250 | int ret; | |
2251 | ||
2252 | qedf->fp_array = | |
2253 | kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), | |
2254 | GFP_KERNEL); | |
2255 | ||
2256 | if (!qedf->fp_array) { | |
2257 | QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " | |
2258 | "failed.\n"); | |
2259 | return -ENOMEM; | |
2260 | } | |
2261 | ||
2262 | for (id = 0; id < qedf->num_queues; id++) { | |
2263 | fp = &(qedf->fp_array[id]); | |
2264 | fp->sb_id = QEDF_SB_ID_NULL; | |
2265 | fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); | |
2266 | if (!fp->sb_info) { | |
2267 | QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " | |
2268 | "allocation failed.\n"); | |
2269 | goto err; | |
2270 | } | |
2271 | ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); | |
2272 | if (ret) { | |
2273 | QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " | |
2274 | "initialization failed.\n"); | |
2275 | goto err; | |
2276 | } | |
2277 | fp->sb_id = id; | |
2278 | fp->qedf = qedf; | |
2279 | fp->cq_num_entries = | |
2280 | qedf->global_queues[id]->cq_mem_size / | |
2281 | sizeof(struct fcoe_cqe); | |
2282 | } | |
2283 | err: | |
2284 | return 0; | |
2285 | } | |
2286 | ||
2287 | void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) | |
2288 | { | |
2289 | u16 xid; | |
2290 | struct qedf_ioreq *io_req; | |
2291 | struct qedf_rport *fcport; | |
2292 | u32 comp_type; | |
2293 | ||
2294 | comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & | |
2295 | FCOE_CQE_CQE_TYPE_MASK; | |
2296 | ||
2297 | xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; | |
2298 | io_req = &qedf->cmd_mgr->cmds[xid]; | |
2299 | ||
2300 | /* Completion not for a valid I/O anymore so just return */ | |
2301 | if (!io_req) | |
2302 | return; | |
2303 | ||
2304 | fcport = io_req->fcport; | |
2305 | ||
2306 | if (fcport == NULL) { | |
2307 | QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); | |
2308 | return; | |
2309 | } | |
2310 | ||
2311 | /* | |
2312 | * Check that fcport is offloaded. If it isn't then the spinlock | |
2313 | * isn't valid and shouldn't be taken. We should just return. | |
2314 | */ | |
2315 | if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
2316 | QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); | |
2317 | return; | |
2318 | } | |
2319 | ||
2320 | ||
2321 | switch (comp_type) { | |
2322 | case FCOE_GOOD_COMPLETION_CQE_TYPE: | |
2323 | atomic_inc(&fcport->free_sqes); | |
2324 | switch (io_req->cmd_type) { | |
2325 | case QEDF_SCSI_CMD: | |
2326 | qedf_scsi_completion(qedf, cqe, io_req); | |
2327 | break; | |
2328 | case QEDF_ELS: | |
2329 | qedf_process_els_compl(qedf, cqe, io_req); | |
2330 | break; | |
2331 | case QEDF_TASK_MGMT_CMD: | |
2332 | qedf_process_tmf_compl(qedf, cqe, io_req); | |
2333 | break; | |
2334 | case QEDF_SEQ_CLEANUP: | |
2335 | qedf_process_seq_cleanup_compl(qedf, cqe, io_req); | |
2336 | break; | |
2337 | } | |
2338 | break; | |
2339 | case FCOE_ERROR_DETECTION_CQE_TYPE: | |
2340 | atomic_inc(&fcport->free_sqes); | |
2341 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2342 | "Error detect CQE.\n"); | |
2343 | qedf_process_error_detect(qedf, cqe, io_req); | |
2344 | break; | |
2345 | case FCOE_EXCH_CLEANUP_CQE_TYPE: | |
2346 | atomic_inc(&fcport->free_sqes); | |
2347 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2348 | "Cleanup CQE.\n"); | |
2349 | qedf_process_cleanup_compl(qedf, cqe, io_req); | |
2350 | break; | |
2351 | case FCOE_ABTS_CQE_TYPE: | |
2352 | atomic_inc(&fcport->free_sqes); | |
2353 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2354 | "Abort CQE.\n"); | |
2355 | qedf_process_abts_compl(qedf, cqe, io_req); | |
2356 | break; | |
2357 | case FCOE_DUMMY_CQE_TYPE: | |
2358 | atomic_inc(&fcport->free_sqes); | |
2359 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2360 | "Dummy CQE.\n"); | |
2361 | break; | |
2362 | case FCOE_LOCAL_COMP_CQE_TYPE: | |
2363 | atomic_inc(&fcport->free_sqes); | |
2364 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2365 | "Local completion CQE.\n"); | |
2366 | break; | |
2367 | case FCOE_WARNING_CQE_TYPE: | |
2368 | atomic_inc(&fcport->free_sqes); | |
2369 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2370 | "Warning CQE.\n"); | |
2371 | qedf_process_warning_compl(qedf, cqe, io_req); | |
2372 | break; | |
2373 | case MAX_FCOE_CQE_TYPE: | |
2374 | atomic_inc(&fcport->free_sqes); | |
2375 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2376 | "Max FCoE CQE.\n"); | |
2377 | break; | |
2378 | default: | |
2379 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2380 | "Default CQE.\n"); | |
2381 | break; | |
2382 | } | |
2383 | } | |
2384 | ||
2385 | static void qedf_free_bdq(struct qedf_ctx *qedf) | |
2386 | { | |
2387 | int i; | |
2388 | ||
2389 | if (qedf->bdq_pbl_list) | |
2390 | dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, | |
2391 | qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); | |
2392 | ||
2393 | if (qedf->bdq_pbl) | |
2394 | dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, | |
2395 | qedf->bdq_pbl, qedf->bdq_pbl_dma); | |
2396 | ||
2397 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { | |
2398 | if (qedf->bdq[i].buf_addr) { | |
2399 | dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, | |
2400 | qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); | |
2401 | } | |
2402 | } | |
2403 | } | |
2404 | ||
2405 | static void qedf_free_global_queues(struct qedf_ctx *qedf) | |
2406 | { | |
2407 | int i; | |
2408 | struct global_queue **gl = qedf->global_queues; | |
2409 | ||
2410 | for (i = 0; i < qedf->num_queues; i++) { | |
2411 | if (!gl[i]) | |
2412 | continue; | |
2413 | ||
2414 | if (gl[i]->cq) | |
2415 | dma_free_coherent(&qedf->pdev->dev, | |
2416 | gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); | |
2417 | if (gl[i]->cq_pbl) | |
2418 | dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, | |
2419 | gl[i]->cq_pbl, gl[i]->cq_pbl_dma); | |
2420 | ||
2421 | kfree(gl[i]); | |
2422 | } | |
2423 | ||
2424 | qedf_free_bdq(qedf); | |
2425 | } | |
2426 | ||
2427 | static int qedf_alloc_bdq(struct qedf_ctx *qedf) | |
2428 | { | |
2429 | int i; | |
2430 | struct scsi_bd *pbl; | |
2431 | u64 *list; | |
2432 | dma_addr_t page; | |
2433 | ||
2434 | /* Alloc dma memory for BDQ buffers */ | |
2435 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { | |
2436 | qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, | |
2437 | QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); | |
2438 | if (!qedf->bdq[i].buf_addr) { | |
2439 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " | |
2440 | "buffer %d.\n", i); | |
2441 | return -ENOMEM; | |
2442 | } | |
2443 | } | |
2444 | ||
2445 | /* Alloc dma memory for BDQ page buffer list */ | |
2446 | qedf->bdq_pbl_mem_size = | |
2447 | QEDF_BDQ_SIZE * sizeof(struct scsi_bd); | |
2448 | qedf->bdq_pbl_mem_size = | |
2449 | ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); | |
2450 | ||
2451 | qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, | |
2452 | qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); | |
2453 | if (!qedf->bdq_pbl) { | |
2454 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); | |
2455 | return -ENOMEM; | |
2456 | } | |
2457 | ||
2458 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
fd2b18b4 JP |
2459 | "BDQ PBL addr=0x%p dma=%pad\n", |
2460 | qedf->bdq_pbl, &qedf->bdq_pbl_dma); | |
61d8658b DC |
2461 | |
2462 | /* | |
2463 | * Populate BDQ PBL with physical and virtual address of individual | |
2464 | * BDQ buffers | |
2465 | */ | |
2466 | pbl = (struct scsi_bd *)qedf->bdq_pbl; | |
2467 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { | |
2468 | pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); | |
2469 | pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); | |
2470 | pbl->opaque.hi = 0; | |
2471 | /* Opaque lo data is an index into the BDQ array */ | |
2472 | pbl->opaque.lo = cpu_to_le32(i); | |
2473 | pbl++; | |
2474 | } | |
2475 | ||
2476 | /* Allocate list of PBL pages */ | |
2477 | qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, | |
2478 | QEDF_PAGE_SIZE, &qedf->bdq_pbl_list_dma, GFP_KERNEL); | |
2479 | if (!qedf->bdq_pbl_list) { | |
2480 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL " | |
2481 | "pages.\n"); | |
2482 | return -ENOMEM; | |
2483 | } | |
2484 | memset(qedf->bdq_pbl_list, 0, QEDF_PAGE_SIZE); | |
2485 | ||
2486 | /* | |
2487 | * Now populate PBL list with pages that contain pointers to the | |
2488 | * individual buffers. | |
2489 | */ | |
2490 | qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / | |
2491 | QEDF_PAGE_SIZE; | |
2492 | list = (u64 *)qedf->bdq_pbl_list; | |
2493 | page = qedf->bdq_pbl_list_dma; | |
2494 | for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { | |
2495 | *list = qedf->bdq_pbl_dma; | |
2496 | list++; | |
2497 | page += QEDF_PAGE_SIZE; | |
2498 | } | |
2499 | ||
2500 | return 0; | |
2501 | } | |
2502 | ||
2503 | static int qedf_alloc_global_queues(struct qedf_ctx *qedf) | |
2504 | { | |
2505 | u32 *list; | |
2506 | int i; | |
2507 | int status = 0, rc; | |
2508 | u32 *pbl; | |
2509 | dma_addr_t page; | |
2510 | int num_pages; | |
2511 | ||
2512 | /* Allocate and map CQs, RQs */ | |
2513 | /* | |
2514 | * Number of global queues (CQ / RQ). This should | |
2515 | * be <= number of available MSIX vectors for the PF | |
2516 | */ | |
2517 | if (!qedf->num_queues) { | |
2518 | QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); | |
2519 | return 1; | |
2520 | } | |
2521 | ||
2522 | /* | |
2523 | * Make sure we allocated the PBL that will contain the physical | |
2524 | * addresses of our queues | |
2525 | */ | |
2526 | if (!qedf->p_cpuq) { | |
2527 | status = 1; | |
2528 | goto mem_alloc_failure; | |
2529 | } | |
2530 | ||
2531 | qedf->global_queues = kzalloc((sizeof(struct global_queue *) | |
2532 | * qedf->num_queues), GFP_KERNEL); | |
2533 | if (!qedf->global_queues) { | |
2534 | QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " | |
2535 | "queues array ptr memory\n"); | |
2536 | return -ENOMEM; | |
2537 | } | |
2538 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2539 | "qedf->global_queues=%p.\n", qedf->global_queues); | |
2540 | ||
2541 | /* Allocate DMA coherent buffers for BDQ */ | |
2542 | rc = qedf_alloc_bdq(qedf); | |
2543 | if (rc) | |
2544 | goto mem_alloc_failure; | |
2545 | ||
2546 | /* Allocate a CQ and an associated PBL for each MSI-X vector */ | |
2547 | for (i = 0; i < qedf->num_queues; i++) { | |
2548 | qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), | |
2549 | GFP_KERNEL); | |
2550 | if (!qedf->global_queues[i]) { | |
2551 | QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocation " | |
2552 | "global queue %d.\n", i); | |
2553 | goto mem_alloc_failure; | |
2554 | } | |
2555 | ||
2556 | qedf->global_queues[i]->cq_mem_size = | |
2557 | FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); | |
2558 | qedf->global_queues[i]->cq_mem_size = | |
2559 | ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); | |
2560 | ||
2561 | qedf->global_queues[i]->cq_pbl_size = | |
2562 | (qedf->global_queues[i]->cq_mem_size / | |
2563 | PAGE_SIZE) * sizeof(void *); | |
2564 | qedf->global_queues[i]->cq_pbl_size = | |
2565 | ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); | |
2566 | ||
2567 | qedf->global_queues[i]->cq = | |
2568 | dma_alloc_coherent(&qedf->pdev->dev, | |
2569 | qedf->global_queues[i]->cq_mem_size, | |
2570 | &qedf->global_queues[i]->cq_dma, GFP_KERNEL); | |
2571 | ||
2572 | if (!qedf->global_queues[i]->cq) { | |
2573 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " | |
2574 | "cq.\n"); | |
2575 | status = -ENOMEM; | |
2576 | goto mem_alloc_failure; | |
2577 | } | |
2578 | memset(qedf->global_queues[i]->cq, 0, | |
2579 | qedf->global_queues[i]->cq_mem_size); | |
2580 | ||
2581 | qedf->global_queues[i]->cq_pbl = | |
2582 | dma_alloc_coherent(&qedf->pdev->dev, | |
2583 | qedf->global_queues[i]->cq_pbl_size, | |
2584 | &qedf->global_queues[i]->cq_pbl_dma, GFP_KERNEL); | |
2585 | ||
2586 | if (!qedf->global_queues[i]->cq_pbl) { | |
2587 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " | |
2588 | "cq PBL.\n"); | |
2589 | status = -ENOMEM; | |
2590 | goto mem_alloc_failure; | |
2591 | } | |
2592 | memset(qedf->global_queues[i]->cq_pbl, 0, | |
2593 | qedf->global_queues[i]->cq_pbl_size); | |
2594 | ||
2595 | /* Create PBL */ | |
2596 | num_pages = qedf->global_queues[i]->cq_mem_size / | |
2597 | QEDF_PAGE_SIZE; | |
2598 | page = qedf->global_queues[i]->cq_dma; | |
2599 | pbl = (u32 *)qedf->global_queues[i]->cq_pbl; | |
2600 | ||
2601 | while (num_pages--) { | |
2602 | *pbl = U64_LO(page); | |
2603 | pbl++; | |
2604 | *pbl = U64_HI(page); | |
2605 | pbl++; | |
2606 | page += QEDF_PAGE_SIZE; | |
2607 | } | |
2608 | /* Set the initial consumer index for cq */ | |
2609 | qedf->global_queues[i]->cq_cons_idx = 0; | |
2610 | } | |
2611 | ||
2612 | list = (u32 *)qedf->p_cpuq; | |
2613 | ||
2614 | /* | |
2615 | * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, | |
2616 | * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points | |
2617 | * to the physical address which contains an array of pointers to | |
2618 | * the physical addresses of the specific queue pages. | |
2619 | */ | |
2620 | for (i = 0; i < qedf->num_queues; i++) { | |
2621 | *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); | |
2622 | list++; | |
2623 | *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); | |
2624 | list++; | |
2625 | *list = U64_LO(0); | |
2626 | list++; | |
2627 | *list = U64_HI(0); | |
2628 | list++; | |
2629 | } | |
2630 | ||
2631 | return 0; | |
2632 | ||
2633 | mem_alloc_failure: | |
2634 | qedf_free_global_queues(qedf); | |
2635 | return status; | |
2636 | } | |
2637 | ||
2638 | static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) | |
2639 | { | |
2640 | u8 sq_num_pbl_pages; | |
2641 | u32 sq_mem_size; | |
2642 | u32 cq_mem_size; | |
2643 | u32 cq_num_entries; | |
2644 | int rval; | |
2645 | ||
2646 | /* | |
2647 | * The number of completion queues/fastpath interrupts/status blocks | |
2648 | * we allocation is the minimum off: | |
2649 | * | |
2650 | * Number of CPUs | |
2651 | * Number of MSI-X vectors | |
2652 | * Max number allocated in hardware (QEDF_MAX_NUM_CQS) | |
2653 | */ | |
2654 | qedf->num_queues = min((unsigned int)QEDF_MAX_NUM_CQS, | |
2655 | num_online_cpus()); | |
2656 | ||
2657 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", | |
2658 | qedf->num_queues); | |
2659 | ||
2660 | qedf->p_cpuq = pci_alloc_consistent(qedf->pdev, | |
2661 | qedf->num_queues * sizeof(struct qedf_glbl_q_params), | |
2662 | &qedf->hw_p_cpuq); | |
2663 | ||
2664 | if (!qedf->p_cpuq) { | |
2665 | QEDF_ERR(&(qedf->dbg_ctx), "pci_alloc_consistent failed.\n"); | |
2666 | return 1; | |
2667 | } | |
2668 | ||
2669 | rval = qedf_alloc_global_queues(qedf); | |
2670 | if (rval) { | |
2671 | QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " | |
2672 | "failed.\n"); | |
2673 | return 1; | |
2674 | } | |
2675 | ||
2676 | /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ | |
2677 | sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); | |
2678 | sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); | |
2679 | sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); | |
2680 | ||
2681 | /* Calculate CQ num entries */ | |
2682 | cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); | |
2683 | cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); | |
2684 | cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); | |
2685 | ||
2686 | memset(&(qedf->pf_params), 0, | |
2687 | sizeof(qedf->pf_params)); | |
2688 | ||
2689 | /* Setup the value for fcoe PF */ | |
2690 | qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; | |
2691 | qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; | |
2692 | qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = | |
2693 | (u64)qedf->hw_p_cpuq; | |
2694 | qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; | |
2695 | ||
2696 | qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; | |
2697 | ||
2698 | qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; | |
2699 | qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; | |
2700 | ||
2701 | /* log_page_size: 12 for 4KB pages */ | |
2702 | qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); | |
2703 | ||
2704 | qedf->pf_params.fcoe_pf_params.mtu = 9000; | |
2705 | qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; | |
2706 | qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; | |
2707 | ||
2708 | /* BDQ address and size */ | |
2709 | qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = | |
2710 | qedf->bdq_pbl_list_dma; | |
2711 | qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = | |
2712 | qedf->bdq_pbl_list_num_entries; | |
2713 | qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; | |
2714 | ||
2715 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2716 | "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", | |
2717 | qedf->bdq_pbl_list, | |
2718 | qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], | |
2719 | qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); | |
2720 | ||
2721 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2722 | "cq_num_entries=%d.\n", | |
2723 | qedf->pf_params.fcoe_pf_params.cq_num_entries); | |
2724 | ||
2725 | return 0; | |
2726 | } | |
2727 | ||
2728 | /* Free DMA coherent memory for array of queue pointers we pass to qed */ | |
2729 | static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) | |
2730 | { | |
2731 | size_t size = 0; | |
2732 | ||
2733 | if (qedf->p_cpuq) { | |
2734 | size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); | |
2735 | pci_free_consistent(qedf->pdev, size, qedf->p_cpuq, | |
2736 | qedf->hw_p_cpuq); | |
2737 | } | |
2738 | ||
2739 | qedf_free_global_queues(qedf); | |
2740 | ||
2741 | if (qedf->global_queues) | |
2742 | kfree(qedf->global_queues); | |
2743 | } | |
2744 | ||
2745 | /* | |
2746 | * PCI driver functions | |
2747 | */ | |
2748 | ||
2749 | static const struct pci_device_id qedf_pci_tbl[] = { | |
2750 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, | |
2751 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, | |
2752 | {0} | |
2753 | }; | |
2754 | MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); | |
2755 | ||
2756 | static struct pci_driver qedf_pci_driver = { | |
2757 | .name = QEDF_MODULE_NAME, | |
2758 | .id_table = qedf_pci_tbl, | |
2759 | .probe = qedf_probe, | |
2760 | .remove = qedf_remove, | |
2761 | }; | |
2762 | ||
2763 | static int __qedf_probe(struct pci_dev *pdev, int mode) | |
2764 | { | |
2765 | int rc = -EINVAL; | |
2766 | struct fc_lport *lport; | |
2767 | struct qedf_ctx *qedf; | |
2768 | struct Scsi_Host *host; | |
2769 | bool is_vf = false; | |
2770 | struct qed_ll2_params params; | |
2771 | char host_buf[20]; | |
2772 | struct qed_link_params link_params; | |
2773 | int status; | |
2774 | void *task_start, *task_end; | |
2775 | struct qed_slowpath_params slowpath_params; | |
2776 | struct qed_probe_params qed_params; | |
2777 | u16 tmp; | |
2778 | ||
2779 | /* | |
2780 | * When doing error recovery we didn't reap the lport so don't try | |
2781 | * to reallocate it. | |
2782 | */ | |
2783 | if (mode != QEDF_MODE_RECOVERY) { | |
2784 | lport = libfc_host_alloc(&qedf_host_template, | |
2785 | sizeof(struct qedf_ctx)); | |
2786 | ||
2787 | if (!lport) { | |
2788 | QEDF_ERR(NULL, "Could not allocate lport.\n"); | |
2789 | rc = -ENOMEM; | |
2790 | goto err0; | |
2791 | } | |
2792 | ||
2793 | /* Initialize qedf_ctx */ | |
2794 | qedf = lport_priv(lport); | |
2795 | qedf->lport = lport; | |
2796 | qedf->ctlr.lp = lport; | |
2797 | qedf->pdev = pdev; | |
2798 | qedf->dbg_ctx.pdev = pdev; | |
2799 | qedf->dbg_ctx.host_no = lport->host->host_no; | |
2800 | spin_lock_init(&qedf->hba_lock); | |
2801 | INIT_LIST_HEAD(&qedf->fcports); | |
2802 | qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; | |
2803 | atomic_set(&qedf->num_offloads, 0); | |
2804 | qedf->stop_io_on_error = false; | |
2805 | pci_set_drvdata(pdev, qedf); | |
8eaf7dfc | 2806 | init_completion(&qedf->fipvlan_compl); |
61d8658b DC |
2807 | |
2808 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, | |
2809 | "QLogic FastLinQ FCoE Module qedf %s, " | |
2810 | "FW %d.%d.%d.%d\n", QEDF_VERSION, | |
2811 | FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, | |
2812 | FW_ENGINEERING_VERSION); | |
2813 | } else { | |
2814 | /* Init pointers during recovery */ | |
2815 | qedf = pci_get_drvdata(pdev); | |
2816 | lport = qedf->lport; | |
2817 | } | |
2818 | ||
2819 | host = lport->host; | |
2820 | ||
2821 | /* Allocate mempool for qedf_io_work structs */ | |
2822 | qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, | |
2823 | qedf_io_work_cache); | |
2824 | if (qedf->io_mempool == NULL) { | |
2825 | QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); | |
2826 | goto err1; | |
2827 | } | |
2828 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", | |
2829 | qedf->io_mempool); | |
2830 | ||
2831 | sprintf(host_buf, "qedf_%u_link", | |
2832 | qedf->lport->host->host_no); | |
2833 | qedf->link_update_wq = create_singlethread_workqueue(host_buf); | |
2834 | INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); | |
2835 | INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); | |
2836 | ||
2837 | qedf->fipvlan_retries = qedf_fipvlan_retries; | |
2838 | ||
2839 | /* | |
2840 | * Common probe. Takes care of basic hardware init and pci_* | |
2841 | * functions. | |
2842 | */ | |
2843 | memset(&qed_params, 0, sizeof(qed_params)); | |
2844 | qed_params.protocol = QED_PROTOCOL_FCOE; | |
2845 | qed_params.dp_module = qedf_dp_module; | |
2846 | qed_params.dp_level = qedf_dp_level; | |
2847 | qed_params.is_vf = is_vf; | |
2848 | qedf->cdev = qed_ops->common->probe(pdev, &qed_params); | |
2849 | if (!qedf->cdev) { | |
2850 | rc = -ENODEV; | |
2851 | goto err1; | |
2852 | } | |
2853 | ||
2854 | /* queue allocation code should come here | |
2855 | * order should be | |
2856 | * slowpath_start | |
2857 | * status block allocation | |
2858 | * interrupt registration (to get min number of queues) | |
2859 | * set_fcoe_pf_param | |
2860 | * qed_sp_fcoe_func_start | |
2861 | */ | |
2862 | rc = qedf_set_fcoe_pf_param(qedf); | |
2863 | if (rc) { | |
2864 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); | |
2865 | goto err2; | |
2866 | } | |
2867 | qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); | |
2868 | ||
2869 | /* Learn information crucial for qedf to progress */ | |
2870 | rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); | |
2871 | if (rc) { | |
2872 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); | |
2873 | goto err1; | |
2874 | } | |
2875 | ||
2876 | /* Record BDQ producer doorbell addresses */ | |
2877 | qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; | |
2878 | qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; | |
2879 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2880 | "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, | |
2881 | qedf->bdq_secondary_prod); | |
2882 | ||
2883 | qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); | |
2884 | ||
2885 | rc = qedf_prepare_sb(qedf); | |
2886 | if (rc) { | |
2887 | ||
2888 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); | |
2889 | goto err2; | |
2890 | } | |
2891 | ||
2892 | /* Start the Slowpath-process */ | |
2893 | slowpath_params.int_mode = QED_INT_MODE_MSIX; | |
2894 | slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; | |
2895 | slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; | |
2896 | slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; | |
2897 | slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; | |
cd22874f | 2898 | strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); |
61d8658b DC |
2899 | rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); |
2900 | if (rc) { | |
2901 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); | |
2902 | goto err2; | |
2903 | } | |
2904 | ||
2905 | /* | |
2906 | * update_pf_params needs to be called before and after slowpath | |
2907 | * start | |
2908 | */ | |
2909 | qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); | |
2910 | ||
2911 | /* Setup interrupts */ | |
2912 | rc = qedf_setup_int(qedf); | |
2913 | if (rc) | |
2914 | goto err3; | |
2915 | ||
2916 | rc = qed_ops->start(qedf->cdev, &qedf->tasks); | |
2917 | if (rc) { | |
2918 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); | |
2919 | goto err4; | |
2920 | } | |
2921 | task_start = qedf_get_task_mem(&qedf->tasks, 0); | |
2922 | task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); | |
2923 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " | |
2924 | "end=%p block_size=%u.\n", task_start, task_end, | |
2925 | qedf->tasks.size); | |
2926 | ||
2927 | /* | |
2928 | * We need to write the number of BDs in the BDQ we've preallocated so | |
2929 | * the f/w will do a prefetch and we'll get an unsolicited CQE when a | |
2930 | * packet arrives. | |
2931 | */ | |
2932 | qedf->bdq_prod_idx = QEDF_BDQ_SIZE; | |
2933 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2934 | "Writing %d to primary and secondary BDQ doorbell registers.\n", | |
2935 | qedf->bdq_prod_idx); | |
2936 | writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); | |
2937 | tmp = readw(qedf->bdq_primary_prod); | |
2938 | writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); | |
2939 | tmp = readw(qedf->bdq_secondary_prod); | |
2940 | ||
2941 | qed_ops->common->set_power_state(qedf->cdev, PCI_D0); | |
2942 | ||
2943 | /* Now that the dev_info struct has been filled in set the MAC | |
2944 | * address | |
2945 | */ | |
2946 | ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); | |
2947 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", | |
2948 | qedf->mac); | |
2949 | ||
2950 | /* Set the WWNN and WWPN based on the MAC address */ | |
2951 | qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); | |
2952 | qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); | |
2953 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " | |
2954 | "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); | |
2955 | ||
2956 | sprintf(host_buf, "host_%d", host->host_no); | |
712c3cbf | 2957 | qed_ops->common->set_name(qedf->cdev, host_buf); |
61d8658b DC |
2958 | |
2959 | ||
2960 | /* Set xid max values */ | |
2961 | qedf->max_scsi_xid = QEDF_MAX_SCSI_XID; | |
2962 | qedf->max_els_xid = QEDF_MAX_ELS_XID; | |
2963 | ||
2964 | /* Allocate cmd mgr */ | |
2965 | qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); | |
2966 | if (!qedf->cmd_mgr) { | |
2967 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); | |
2968 | goto err5; | |
2969 | } | |
2970 | ||
2971 | if (mode != QEDF_MODE_RECOVERY) { | |
2972 | host->transportt = qedf_fc_transport_template; | |
2973 | host->can_queue = QEDF_MAX_ELS_XID; | |
2974 | host->max_lun = qedf_max_lun; | |
2975 | host->max_cmd_len = QEDF_MAX_CDB_LEN; | |
2976 | rc = scsi_add_host(host, &pdev->dev); | |
2977 | if (rc) | |
2978 | goto err6; | |
2979 | } | |
2980 | ||
2981 | memset(¶ms, 0, sizeof(params)); | |
2982 | params.mtu = 9000; | |
2983 | ether_addr_copy(params.ll2_mac_address, qedf->mac); | |
2984 | ||
2985 | /* Start LL2 processing thread */ | |
2986 | snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); | |
2987 | qedf->ll2_recv_wq = | |
2988 | create_singlethread_workqueue(host_buf); | |
2989 | if (!qedf->ll2_recv_wq) { | |
2990 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); | |
2991 | goto err7; | |
2992 | } | |
2993 | ||
2994 | #ifdef CONFIG_DEBUG_FS | |
2995 | qedf_dbg_host_init(&(qedf->dbg_ctx), &qedf_debugfs_ops, | |
2996 | &qedf_dbg_fops); | |
2997 | #endif | |
2998 | ||
2999 | /* Start LL2 */ | |
3000 | qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); | |
3001 | rc = qed_ops->ll2->start(qedf->cdev, ¶ms); | |
3002 | if (rc) { | |
3003 | QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); | |
3004 | goto err7; | |
3005 | } | |
3006 | set_bit(QEDF_LL2_STARTED, &qedf->flags); | |
3007 | ||
3008 | /* hw will be insterting vlan tag*/ | |
3009 | qedf->vlan_hw_insert = 1; | |
3010 | qedf->vlan_id = 0; | |
3011 | ||
3012 | /* | |
3013 | * No need to setup fcoe_ctlr or fc_lport objects during recovery since | |
3014 | * they were not reaped during the unload process. | |
3015 | */ | |
3016 | if (mode != QEDF_MODE_RECOVERY) { | |
3017 | /* Setup imbedded fcoe controller */ | |
3018 | qedf_fcoe_ctlr_setup(qedf); | |
3019 | ||
3020 | /* Setup lport */ | |
3021 | rc = qedf_lport_setup(qedf); | |
3022 | if (rc) { | |
3023 | QEDF_ERR(&(qedf->dbg_ctx), | |
3024 | "qedf_lport_setup failed.\n"); | |
3025 | goto err7; | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); | |
3030 | qedf->timer_work_queue = | |
3031 | create_singlethread_workqueue(host_buf); | |
3032 | if (!qedf->timer_work_queue) { | |
3033 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " | |
3034 | "workqueue.\n"); | |
3035 | goto err7; | |
3036 | } | |
3037 | ||
3038 | /* DPC workqueue is not reaped during recovery unload */ | |
3039 | if (mode != QEDF_MODE_RECOVERY) { | |
3040 | sprintf(host_buf, "qedf_%u_dpc", | |
3041 | qedf->lport->host->host_no); | |
3042 | qedf->dpc_wq = create_singlethread_workqueue(host_buf); | |
3043 | } | |
3044 | ||
3045 | /* | |
3046 | * GRC dump and sysfs parameters are not reaped during the recovery | |
3047 | * unload process. | |
3048 | */ | |
3049 | if (mode != QEDF_MODE_RECOVERY) { | |
3050 | qedf->grcdump_size = qed_ops->common->dbg_grc_size(qedf->cdev); | |
3051 | if (qedf->grcdump_size) { | |
3052 | rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, | |
3053 | qedf->grcdump_size); | |
3054 | if (rc) { | |
3055 | QEDF_ERR(&(qedf->dbg_ctx), | |
3056 | "GRC Dump buffer alloc failed.\n"); | |
3057 | qedf->grcdump = NULL; | |
3058 | } | |
3059 | ||
3060 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
3061 | "grcdump: addr=%p, size=%u.\n", | |
3062 | qedf->grcdump, qedf->grcdump_size); | |
3063 | } | |
3064 | qedf_create_sysfs_ctx_attr(qedf); | |
3065 | ||
3066 | /* Initialize I/O tracing for this adapter */ | |
3067 | spin_lock_init(&qedf->io_trace_lock); | |
3068 | qedf->io_trace_idx = 0; | |
3069 | } | |
3070 | ||
3071 | init_completion(&qedf->flogi_compl); | |
3072 | ||
3073 | memset(&link_params, 0, sizeof(struct qed_link_params)); | |
3074 | link_params.link_up = true; | |
3075 | status = qed_ops->common->set_link(qedf->cdev, &link_params); | |
3076 | if (status) | |
3077 | QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); | |
3078 | ||
3079 | /* Start/restart discovery */ | |
3080 | if (mode == QEDF_MODE_RECOVERY) | |
3081 | fcoe_ctlr_link_up(&qedf->ctlr); | |
3082 | else | |
3083 | fc_fabric_login(lport); | |
3084 | ||
3085 | /* All good */ | |
3086 | return 0; | |
3087 | ||
3088 | err7: | |
3089 | if (qedf->ll2_recv_wq) | |
3090 | destroy_workqueue(qedf->ll2_recv_wq); | |
3091 | fc_remove_host(qedf->lport->host); | |
3092 | scsi_remove_host(qedf->lport->host); | |
3093 | #ifdef CONFIG_DEBUG_FS | |
3094 | qedf_dbg_host_exit(&(qedf->dbg_ctx)); | |
3095 | #endif | |
3096 | err6: | |
3097 | qedf_cmd_mgr_free(qedf->cmd_mgr); | |
3098 | err5: | |
3099 | qed_ops->stop(qedf->cdev); | |
3100 | err4: | |
3101 | qedf_free_fcoe_pf_param(qedf); | |
3102 | qedf_sync_free_irqs(qedf); | |
3103 | err3: | |
3104 | qed_ops->common->slowpath_stop(qedf->cdev); | |
3105 | err2: | |
3106 | qed_ops->common->remove(qedf->cdev); | |
3107 | err1: | |
3108 | scsi_host_put(lport->host); | |
3109 | err0: | |
3110 | return rc; | |
3111 | } | |
3112 | ||
3113 | static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
3114 | { | |
3115 | return __qedf_probe(pdev, QEDF_MODE_NORMAL); | |
3116 | } | |
3117 | ||
3118 | static void __qedf_remove(struct pci_dev *pdev, int mode) | |
3119 | { | |
3120 | struct qedf_ctx *qedf; | |
3121 | ||
3122 | if (!pdev) { | |
3123 | QEDF_ERR(NULL, "pdev is NULL.\n"); | |
3124 | return; | |
3125 | } | |
3126 | ||
3127 | qedf = pci_get_drvdata(pdev); | |
3128 | ||
3129 | /* | |
3130 | * Prevent race where we're in board disable work and then try to | |
3131 | * rmmod the module. | |
3132 | */ | |
3133 | if (test_bit(QEDF_UNLOADING, &qedf->flags)) { | |
3134 | QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); | |
3135 | return; | |
3136 | } | |
3137 | ||
3138 | if (mode != QEDF_MODE_RECOVERY) | |
3139 | set_bit(QEDF_UNLOADING, &qedf->flags); | |
3140 | ||
3141 | /* Logoff the fabric to upload all connections */ | |
3142 | if (mode == QEDF_MODE_RECOVERY) | |
3143 | fcoe_ctlr_link_down(&qedf->ctlr); | |
3144 | else | |
3145 | fc_fabric_logoff(qedf->lport); | |
3146 | qedf_wait_for_upload(qedf); | |
3147 | ||
3148 | #ifdef CONFIG_DEBUG_FS | |
3149 | qedf_dbg_host_exit(&(qedf->dbg_ctx)); | |
3150 | #endif | |
3151 | ||
3152 | /* Stop any link update handling */ | |
3153 | cancel_delayed_work_sync(&qedf->link_update); | |
3154 | destroy_workqueue(qedf->link_update_wq); | |
3155 | qedf->link_update_wq = NULL; | |
3156 | ||
3157 | if (qedf->timer_work_queue) | |
3158 | destroy_workqueue(qedf->timer_work_queue); | |
3159 | ||
3160 | /* Stop Light L2 */ | |
3161 | clear_bit(QEDF_LL2_STARTED, &qedf->flags); | |
3162 | qed_ops->ll2->stop(qedf->cdev); | |
3163 | if (qedf->ll2_recv_wq) | |
3164 | destroy_workqueue(qedf->ll2_recv_wq); | |
3165 | ||
3166 | /* Stop fastpath */ | |
3167 | qedf_sync_free_irqs(qedf); | |
3168 | qedf_destroy_sb(qedf); | |
3169 | ||
3170 | /* | |
3171 | * During recovery don't destroy OS constructs that represent the | |
3172 | * physical port. | |
3173 | */ | |
3174 | if (mode != QEDF_MODE_RECOVERY) { | |
3175 | qedf_free_grc_dump_buf(&qedf->grcdump); | |
3176 | qedf_remove_sysfs_ctx_attr(qedf); | |
3177 | ||
3178 | /* Remove all SCSI/libfc/libfcoe structures */ | |
3179 | fcoe_ctlr_destroy(&qedf->ctlr); | |
3180 | fc_lport_destroy(qedf->lport); | |
3181 | fc_remove_host(qedf->lport->host); | |
3182 | scsi_remove_host(qedf->lport->host); | |
3183 | } | |
3184 | ||
3185 | qedf_cmd_mgr_free(qedf->cmd_mgr); | |
3186 | ||
3187 | if (mode != QEDF_MODE_RECOVERY) { | |
3188 | fc_exch_mgr_free(qedf->lport); | |
3189 | fc_lport_free_stats(qedf->lport); | |
3190 | ||
3191 | /* Wait for all vports to be reaped */ | |
3192 | qedf_wait_for_vport_destroy(qedf); | |
3193 | } | |
3194 | ||
3195 | /* | |
3196 | * Now that all connections have been uploaded we can stop the | |
3197 | * rest of the qed operations | |
3198 | */ | |
3199 | qed_ops->stop(qedf->cdev); | |
3200 | ||
3201 | if (mode != QEDF_MODE_RECOVERY) { | |
3202 | if (qedf->dpc_wq) { | |
3203 | /* Stop general DPC handling */ | |
3204 | destroy_workqueue(qedf->dpc_wq); | |
3205 | qedf->dpc_wq = NULL; | |
3206 | } | |
3207 | } | |
3208 | ||
3209 | /* Final shutdown for the board */ | |
3210 | qedf_free_fcoe_pf_param(qedf); | |
3211 | if (mode != QEDF_MODE_RECOVERY) { | |
3212 | qed_ops->common->set_power_state(qedf->cdev, PCI_D0); | |
3213 | pci_set_drvdata(pdev, NULL); | |
3214 | } | |
3215 | qed_ops->common->slowpath_stop(qedf->cdev); | |
3216 | qed_ops->common->remove(qedf->cdev); | |
3217 | ||
3218 | mempool_destroy(qedf->io_mempool); | |
3219 | ||
3220 | /* Only reap the Scsi_host on a real removal */ | |
3221 | if (mode != QEDF_MODE_RECOVERY) | |
3222 | scsi_host_put(qedf->lport->host); | |
3223 | } | |
3224 | ||
3225 | static void qedf_remove(struct pci_dev *pdev) | |
3226 | { | |
3227 | /* Check to make sure this function wasn't already disabled */ | |
3228 | if (!atomic_read(&pdev->enable_cnt)) | |
3229 | return; | |
3230 | ||
3231 | __qedf_remove(pdev, QEDF_MODE_NORMAL); | |
3232 | } | |
3233 | ||
3234 | /* | |
3235 | * Module Init/Remove | |
3236 | */ | |
3237 | ||
3238 | static int __init qedf_init(void) | |
3239 | { | |
3240 | int ret; | |
3241 | ||
3242 | /* If debug=1 passed, set the default log mask */ | |
3243 | if (qedf_debug == QEDF_LOG_DEFAULT) | |
3244 | qedf_debug = QEDF_DEFAULT_LOG_MASK; | |
3245 | ||
3246 | /* Print driver banner */ | |
3247 | QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, | |
3248 | QEDF_VERSION); | |
3249 | ||
3250 | /* Create kmem_cache for qedf_io_work structs */ | |
3251 | qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", | |
3252 | sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); | |
3253 | if (qedf_io_work_cache == NULL) { | |
3254 | QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); | |
3255 | goto err1; | |
3256 | } | |
3257 | QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", | |
3258 | qedf_io_work_cache); | |
3259 | ||
3260 | qed_ops = qed_get_fcoe_ops(); | |
3261 | if (!qed_ops) { | |
3262 | QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); | |
3263 | goto err1; | |
3264 | } | |
3265 | ||
3266 | #ifdef CONFIG_DEBUG_FS | |
3267 | qedf_dbg_init("qedf"); | |
3268 | #endif | |
3269 | ||
3270 | qedf_fc_transport_template = | |
3271 | fc_attach_transport(&qedf_fc_transport_fn); | |
3272 | if (!qedf_fc_transport_template) { | |
3273 | QEDF_ERR(NULL, "Could not register with FC transport\n"); | |
3274 | goto err2; | |
3275 | } | |
3276 | ||
3277 | qedf_fc_vport_transport_template = | |
3278 | fc_attach_transport(&qedf_fc_vport_transport_fn); | |
3279 | if (!qedf_fc_vport_transport_template) { | |
3280 | QEDF_ERR(NULL, "Could not register vport template with FC " | |
3281 | "transport\n"); | |
3282 | goto err3; | |
3283 | } | |
3284 | ||
3285 | qedf_io_wq = create_workqueue("qedf_io_wq"); | |
3286 | if (!qedf_io_wq) { | |
3287 | QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); | |
3288 | goto err4; | |
3289 | } | |
3290 | ||
3291 | qedf_cb_ops.get_login_failures = qedf_get_login_failures; | |
3292 | ||
3293 | ret = pci_register_driver(&qedf_pci_driver); | |
3294 | if (ret) { | |
3295 | QEDF_ERR(NULL, "Failed to register driver\n"); | |
3296 | goto err5; | |
3297 | } | |
3298 | ||
3299 | return 0; | |
3300 | ||
3301 | err5: | |
3302 | destroy_workqueue(qedf_io_wq); | |
3303 | err4: | |
3304 | fc_release_transport(qedf_fc_vport_transport_template); | |
3305 | err3: | |
3306 | fc_release_transport(qedf_fc_transport_template); | |
3307 | err2: | |
3308 | #ifdef CONFIG_DEBUG_FS | |
3309 | qedf_dbg_exit(); | |
3310 | #endif | |
3311 | qed_put_fcoe_ops(); | |
3312 | err1: | |
3313 | return -EINVAL; | |
3314 | } | |
3315 | ||
3316 | static void __exit qedf_cleanup(void) | |
3317 | { | |
3318 | pci_unregister_driver(&qedf_pci_driver); | |
3319 | ||
3320 | destroy_workqueue(qedf_io_wq); | |
3321 | ||
3322 | fc_release_transport(qedf_fc_vport_transport_template); | |
3323 | fc_release_transport(qedf_fc_transport_template); | |
3324 | #ifdef CONFIG_DEBUG_FS | |
3325 | qedf_dbg_exit(); | |
3326 | #endif | |
3327 | qed_put_fcoe_ops(); | |
3328 | ||
3329 | kmem_cache_destroy(qedf_io_work_cache); | |
3330 | } | |
3331 | ||
3332 | MODULE_LICENSE("GPL"); | |
3333 | MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); | |
3334 | MODULE_AUTHOR("QLogic Corporation"); | |
3335 | MODULE_VERSION(QEDF_VERSION); | |
3336 | module_init(qedf_init); | |
3337 | module_exit(qedf_cleanup); |