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61d8658b DC |
1 | /* |
2 | * QLogic FCoE Offload Driver | |
5d1c8b5b | 3 | * Copyright (c) 2016-2018 Cavium Inc. |
61d8658b DC |
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> | |
a3cd42a9 | 21 | #include <scsi/fc_frame.h> |
61d8658b DC |
22 | #include <linux/if_ether.h> |
23 | #include <linux/if_vlan.h> | |
24 | #include <linux/cpu.h> | |
25 | #include "qedf.h" | |
d9ea463a | 26 | #include "qedf_dbg.h" |
5185b328 | 27 | #include <uapi/linux/pci_regs.h> |
61d8658b DC |
28 | |
29 | const struct qed_fcoe_ops *qed_ops; | |
30 | ||
31 | static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); | |
32 | static void qedf_remove(struct pci_dev *pdev); | |
33 | ||
61d8658b DC |
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); | |
0516abdf | 44 | MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" |
61d8658b DC |
45 | " mask"); |
46 | ||
c3ef86f3 | 47 | static uint qedf_fipvlan_retries = 60; |
61d8658b DC |
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 " | |
c3ef86f3 | 50 | "before giving up (default 60)"); |
61d8658b DC |
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 | ||
84b2ba6e | 57 | static int qedf_default_prio = -1; |
61d8658b | 58 | module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); |
84b2ba6e CD |
59 | MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" |
60 | " traffic (value between 0 and 7, default 3)."); | |
61d8658b DC |
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 | ||
ba17d379 CD |
92 | static bool qedf_dcbx_no_wait; |
93 | module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); | |
94 | MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " | |
95 | "sending FIP VLAN requests on link up (Default: off)."); | |
96 | ||
61d8658b DC |
97 | static uint qedf_dp_module; |
98 | module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); | |
99 | MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " | |
100 | "qed module during probe."); | |
101 | ||
2b82a62f | 102 | static uint qedf_dp_level = QED_LEVEL_NOTICE; |
61d8658b DC |
103 | module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); |
104 | MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " | |
105 | "during probe (0-3: 0 more verbose)."); | |
106 | ||
107 | struct workqueue_struct *qedf_io_wq; | |
108 | ||
109 | static struct fcoe_percpu_s qedf_global; | |
110 | static DEFINE_SPINLOCK(qedf_global_lock); | |
111 | ||
112 | static struct kmem_cache *qedf_io_work_cache; | |
113 | ||
114 | void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) | |
115 | { | |
116 | qedf->vlan_id = vlan_id; | |
84b2ba6e | 117 | qedf->vlan_id |= qedf->prio << VLAN_PRIO_SHIFT; |
61d8658b | 118 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Setting vlan_id=%04x " |
84b2ba6e | 119 | "prio=%d.\n", vlan_id, qedf->prio); |
61d8658b DC |
120 | } |
121 | ||
122 | /* Returns true if we have a valid vlan, false otherwise */ | |
123 | static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) | |
124 | { | |
125 | int rc; | |
126 | ||
127 | if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { | |
128 | QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n"); | |
129 | return false; | |
130 | } | |
131 | ||
132 | while (qedf->fipvlan_retries--) { | |
133 | if (qedf->vlan_id > 0) | |
134 | return true; | |
135 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
136 | "Retry %d.\n", qedf->fipvlan_retries); | |
137 | init_completion(&qedf->fipvlan_compl); | |
138 | qedf_fcoe_send_vlan_req(qedf); | |
139 | rc = wait_for_completion_timeout(&qedf->fipvlan_compl, | |
140 | 1 * HZ); | |
141 | if (rc > 0) { | |
142 | fcoe_ctlr_link_up(&qedf->ctlr); | |
143 | return true; | |
144 | } | |
145 | } | |
146 | ||
147 | return false; | |
148 | } | |
149 | ||
150 | static void qedf_handle_link_update(struct work_struct *work) | |
151 | { | |
152 | struct qedf_ctx *qedf = | |
153 | container_of(work, struct qedf_ctx, link_update.work); | |
154 | int rc; | |
155 | ||
156 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Entered.\n"); | |
157 | ||
158 | if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { | |
159 | rc = qedf_initiate_fipvlan_req(qedf); | |
160 | if (rc) | |
161 | return; | |
162 | /* | |
163 | * If we get here then we never received a repsonse to our | |
164 | * fip vlan request so set the vlan_id to the default and | |
165 | * tell FCoE that the link is up | |
166 | */ | |
167 | QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " | |
168 | "response, falling back to default VLAN %d.\n", | |
169 | qedf_fallback_vlan); | |
cf291163 | 170 | qedf_set_vlan_id(qedf, qedf_fallback_vlan); |
61d8658b DC |
171 | |
172 | /* | |
173 | * Zero out data_src_addr so we'll update it with the new | |
174 | * lport port_id | |
175 | */ | |
176 | eth_zero_addr(qedf->data_src_addr); | |
177 | fcoe_ctlr_link_up(&qedf->ctlr); | |
178 | } else if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { | |
179 | /* | |
180 | * If we hit here and link_down_tmo_valid is still 1 it means | |
181 | * that link_down_tmo timed out so set it to 0 to make sure any | |
182 | * other readers have accurate state. | |
183 | */ | |
184 | atomic_set(&qedf->link_down_tmo_valid, 0); | |
185 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
186 | "Calling fcoe_ctlr_link_down().\n"); | |
187 | fcoe_ctlr_link_down(&qedf->ctlr); | |
188 | qedf_wait_for_upload(qedf); | |
189 | /* Reset the number of FIP VLAN retries */ | |
190 | qedf->fipvlan_retries = qedf_fipvlan_retries; | |
191 | } | |
192 | } | |
193 | ||
a3cd42a9 CD |
194 | #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 |
195 | #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 | |
196 | #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 | |
197 | static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) | |
198 | { | |
199 | u8 *granted_mac; | |
200 | struct fc_frame_header *fh = fc_frame_header_get(fp); | |
201 | u8 fc_map[3]; | |
202 | int method = 0; | |
203 | ||
204 | /* Get granted MAC address from FIP FLOGI payload */ | |
205 | granted_mac = fr_cb(fp)->granted_mac; | |
206 | ||
207 | /* | |
208 | * We set the source MAC for FCoE traffic based on the Granted MAC | |
209 | * address from the switch. | |
210 | * | |
211 | * If granted_mac is non-zero, we used that. | |
212 | * If the granted_mac is zeroed out, created the FCoE MAC based on | |
213 | * the sel_fcf->fc_map and the d_id fo the FLOGI frame. | |
214 | * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the | |
215 | * d_id of the FLOGI frame. | |
216 | */ | |
217 | if (!is_zero_ether_addr(granted_mac)) { | |
218 | ether_addr_copy(qedf->data_src_addr, granted_mac); | |
219 | method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; | |
220 | } else if (qedf->ctlr.sel_fcf->fc_map != 0) { | |
221 | hton24(fc_map, qedf->ctlr.sel_fcf->fc_map); | |
222 | qedf->data_src_addr[0] = fc_map[0]; | |
223 | qedf->data_src_addr[1] = fc_map[1]; | |
224 | qedf->data_src_addr[2] = fc_map[2]; | |
225 | qedf->data_src_addr[3] = fh->fh_d_id[0]; | |
226 | qedf->data_src_addr[4] = fh->fh_d_id[1]; | |
227 | qedf->data_src_addr[5] = fh->fh_d_id[2]; | |
228 | method = QEDF_FCOE_MAC_METHOD_FCF_MAP; | |
229 | } else { | |
230 | fc_fcoe_set_mac(qedf->data_src_addr, fh->fh_d_id); | |
231 | method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; | |
232 | } | |
233 | ||
234 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
235 | "QEDF data_src_mac=%pM method=%d.\n", qedf->data_src_addr, method); | |
236 | } | |
237 | ||
61d8658b DC |
238 | static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, |
239 | void *arg) | |
240 | { | |
241 | struct fc_exch *exch = fc_seq_exch(seq); | |
242 | struct fc_lport *lport = exch->lp; | |
243 | struct qedf_ctx *qedf = lport_priv(lport); | |
244 | ||
245 | if (!qedf) { | |
246 | QEDF_ERR(NULL, "qedf is NULL.\n"); | |
247 | return; | |
248 | } | |
249 | ||
250 | /* | |
251 | * If ERR_PTR is set then don't try to stat anything as it will cause | |
252 | * a crash when we access fp. | |
253 | */ | |
254 | if (IS_ERR(fp)) { | |
255 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, | |
256 | "fp has IS_ERR() set.\n"); | |
257 | goto skip_stat; | |
258 | } | |
259 | ||
260 | /* Log stats for FLOGI reject */ | |
261 | if (fc_frame_payload_op(fp) == ELS_LS_RJT) | |
262 | qedf->flogi_failed++; | |
a3cd42a9 CD |
263 | else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { |
264 | /* Set the source MAC we will use for FCoE traffic */ | |
265 | qedf_set_data_src_addr(qedf, fp); | |
266 | } | |
61d8658b DC |
267 | |
268 | /* Complete flogi_compl so we can proceed to sending ADISCs */ | |
269 | complete(&qedf->flogi_compl); | |
270 | ||
271 | skip_stat: | |
272 | /* Report response to libfc */ | |
273 | fc_lport_flogi_resp(seq, fp, lport); | |
274 | } | |
275 | ||
276 | static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, | |
277 | struct fc_frame *fp, unsigned int op, | |
278 | void (*resp)(struct fc_seq *, | |
279 | struct fc_frame *, | |
280 | void *), | |
281 | void *arg, u32 timeout) | |
282 | { | |
283 | struct qedf_ctx *qedf = lport_priv(lport); | |
284 | ||
285 | /* | |
286 | * Intercept FLOGI for statistic purposes. Note we use the resp | |
287 | * callback to tell if this is really a flogi. | |
288 | */ | |
289 | if (resp == fc_lport_flogi_resp) { | |
290 | qedf->flogi_cnt++; | |
291 | return fc_elsct_send(lport, did, fp, op, qedf_flogi_resp, | |
292 | arg, timeout); | |
293 | } | |
294 | ||
295 | return fc_elsct_send(lport, did, fp, op, resp, arg, timeout); | |
296 | } | |
297 | ||
298 | int qedf_send_flogi(struct qedf_ctx *qedf) | |
299 | { | |
300 | struct fc_lport *lport; | |
301 | struct fc_frame *fp; | |
302 | ||
303 | lport = qedf->lport; | |
304 | ||
305 | if (!lport->tt.elsct_send) | |
306 | return -EINVAL; | |
307 | ||
308 | fp = fc_frame_alloc(lport, sizeof(struct fc_els_flogi)); | |
309 | if (!fp) { | |
310 | QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n"); | |
311 | return -ENOMEM; | |
312 | } | |
313 | ||
314 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, | |
315 | "Sending FLOGI to reestablish session with switch.\n"); | |
316 | lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, | |
317 | ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); | |
318 | ||
319 | init_completion(&qedf->flogi_compl); | |
320 | ||
321 | return 0; | |
322 | } | |
323 | ||
324 | struct qedf_tmp_rdata_item { | |
325 | struct fc_rport_priv *rdata; | |
326 | struct list_head list; | |
327 | }; | |
328 | ||
329 | /* | |
330 | * This function is called if link_down_tmo is in use. If we get a link up and | |
331 | * link_down_tmo has not expired then use just FLOGI/ADISC to recover our | |
332 | * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). | |
333 | */ | |
334 | static void qedf_link_recovery(struct work_struct *work) | |
335 | { | |
336 | struct qedf_ctx *qedf = | |
337 | container_of(work, struct qedf_ctx, link_recovery.work); | |
338 | struct qedf_rport *fcport; | |
339 | struct fc_rport_priv *rdata; | |
340 | struct qedf_tmp_rdata_item *rdata_item, *tmp_rdata_item; | |
341 | bool rc; | |
342 | int retries = 30; | |
343 | int rval, i; | |
344 | struct list_head rdata_login_list; | |
345 | ||
346 | INIT_LIST_HEAD(&rdata_login_list); | |
347 | ||
348 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
349 | "Link down tmo did not expire.\n"); | |
350 | ||
351 | /* | |
352 | * Essentially reset the fcoe_ctlr here without affecting the state | |
353 | * of the libfc structs. | |
354 | */ | |
355 | qedf->ctlr.state = FIP_ST_LINK_WAIT; | |
356 | fcoe_ctlr_link_down(&qedf->ctlr); | |
357 | ||
358 | /* | |
359 | * Bring the link up before we send the fipvlan request so libfcoe | |
360 | * can select a new fcf in parallel | |
361 | */ | |
362 | fcoe_ctlr_link_up(&qedf->ctlr); | |
363 | ||
364 | /* Since the link when down and up to verify which vlan we're on */ | |
365 | qedf->fipvlan_retries = qedf_fipvlan_retries; | |
366 | rc = qedf_initiate_fipvlan_req(qedf); | |
cf291163 | 367 | /* If getting the VLAN fails, set the VLAN to the fallback one */ |
61d8658b | 368 | if (!rc) |
cf291163 | 369 | qedf_set_vlan_id(qedf, qedf_fallback_vlan); |
61d8658b DC |
370 | |
371 | /* | |
372 | * We need to wait for an FCF to be selected due to the | |
373 | * fcoe_ctlr_link_up other the FLOGI will be rejected. | |
374 | */ | |
375 | while (retries > 0) { | |
376 | if (qedf->ctlr.sel_fcf) { | |
377 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
378 | "FCF reselected, proceeding with FLOGI.\n"); | |
379 | break; | |
380 | } | |
381 | msleep(500); | |
382 | retries--; | |
383 | } | |
384 | ||
385 | if (retries < 1) { | |
386 | QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " | |
387 | "FCF selection.\n"); | |
388 | return; | |
389 | } | |
390 | ||
391 | rval = qedf_send_flogi(qedf); | |
392 | if (rval) | |
393 | return; | |
394 | ||
395 | /* Wait for FLOGI completion before proceeding with sending ADISCs */ | |
396 | i = wait_for_completion_timeout(&qedf->flogi_compl, | |
397 | qedf->lport->r_a_tov); | |
398 | if (i == 0) { | |
399 | QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n"); | |
400 | return; | |
401 | } | |
402 | ||
403 | /* | |
404 | * Call lport->tt.rport_login which will cause libfc to send an | |
405 | * ADISC since the rport is in state ready. | |
406 | */ | |
407 | rcu_read_lock(); | |
408 | list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { | |
409 | rdata = fcport->rdata; | |
410 | if (rdata == NULL) | |
411 | continue; | |
412 | rdata_item = kzalloc(sizeof(struct qedf_tmp_rdata_item), | |
413 | GFP_ATOMIC); | |
414 | if (!rdata_item) | |
415 | continue; | |
416 | if (kref_get_unless_zero(&rdata->kref)) { | |
417 | rdata_item->rdata = rdata; | |
418 | list_add(&rdata_item->list, &rdata_login_list); | |
419 | } else | |
420 | kfree(rdata_item); | |
421 | } | |
422 | rcu_read_unlock(); | |
423 | /* | |
424 | * Do the fc_rport_login outside of the rcu lock so we don't take a | |
425 | * mutex in an atomic context. | |
426 | */ | |
427 | list_for_each_entry_safe(rdata_item, tmp_rdata_item, &rdata_login_list, | |
428 | list) { | |
429 | list_del(&rdata_item->list); | |
430 | fc_rport_login(rdata_item->rdata); | |
431 | kref_put(&rdata_item->rdata->kref, fc_rport_destroy); | |
432 | kfree(rdata_item); | |
433 | } | |
434 | } | |
435 | ||
436 | static void qedf_update_link_speed(struct qedf_ctx *qedf, | |
437 | struct qed_link_output *link) | |
438 | { | |
439 | struct fc_lport *lport = qedf->lport; | |
440 | ||
441 | lport->link_speed = FC_PORTSPEED_UNKNOWN; | |
442 | lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; | |
443 | ||
444 | /* Set fc_host link speed */ | |
445 | switch (link->speed) { | |
446 | case 10000: | |
447 | lport->link_speed = FC_PORTSPEED_10GBIT; | |
448 | break; | |
449 | case 25000: | |
450 | lport->link_speed = FC_PORTSPEED_25GBIT; | |
451 | break; | |
452 | case 40000: | |
453 | lport->link_speed = FC_PORTSPEED_40GBIT; | |
454 | break; | |
455 | case 50000: | |
456 | lport->link_speed = FC_PORTSPEED_50GBIT; | |
457 | break; | |
458 | case 100000: | |
459 | lport->link_speed = FC_PORTSPEED_100GBIT; | |
460 | break; | |
461 | default: | |
462 | lport->link_speed = FC_PORTSPEED_UNKNOWN; | |
463 | break; | |
464 | } | |
465 | ||
466 | /* | |
467 | * Set supported link speed by querying the supported | |
468 | * capabilities of the link. | |
469 | */ | |
470 | if (link->supported_caps & SUPPORTED_10000baseKR_Full) | |
471 | lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; | |
472 | if (link->supported_caps & SUPPORTED_25000baseKR_Full) | |
473 | lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; | |
474 | if (link->supported_caps & SUPPORTED_40000baseLR4_Full) | |
475 | lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; | |
476 | if (link->supported_caps & SUPPORTED_50000baseKR2_Full) | |
477 | lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; | |
478 | if (link->supported_caps & SUPPORTED_100000baseKR4_Full) | |
479 | lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; | |
480 | fc_host_supported_speeds(lport->host) = lport->link_supported_speeds; | |
481 | } | |
482 | ||
483 | static void qedf_link_update(void *dev, struct qed_link_output *link) | |
484 | { | |
485 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; | |
486 | ||
487 | if (link->link_up) { | |
3f9de7f0 CD |
488 | if (atomic_read(&qedf->link_state) == QEDF_LINK_UP) { |
489 | QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, | |
490 | "Ignoring link up event as link is already up.\n"); | |
491 | return; | |
492 | } | |
61d8658b DC |
493 | QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n", |
494 | link->speed / 1000); | |
495 | ||
496 | /* Cancel any pending link down work */ | |
497 | cancel_delayed_work(&qedf->link_update); | |
498 | ||
499 | atomic_set(&qedf->link_state, QEDF_LINK_UP); | |
500 | qedf_update_link_speed(qedf, link); | |
501 | ||
ba17d379 CD |
502 | if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE || |
503 | qedf_dcbx_no_wait) { | |
f7e8d57b CD |
504 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
505 | "DCBx done.\n"); | |
61d8658b DC |
506 | if (atomic_read(&qedf->link_down_tmo_valid) > 0) |
507 | queue_delayed_work(qedf->link_update_wq, | |
508 | &qedf->link_recovery, 0); | |
509 | else | |
510 | queue_delayed_work(qedf->link_update_wq, | |
511 | &qedf->link_update, 0); | |
512 | atomic_set(&qedf->link_down_tmo_valid, 0); | |
513 | } | |
514 | ||
515 | } else { | |
516 | QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n"); | |
517 | ||
518 | atomic_set(&qedf->link_state, QEDF_LINK_DOWN); | |
519 | atomic_set(&qedf->dcbx, QEDF_DCBX_PENDING); | |
520 | /* | |
521 | * Flag that we're waiting for the link to come back up before | |
522 | * informing the fcoe layer of the event. | |
523 | */ | |
524 | if (qedf_link_down_tmo > 0) { | |
525 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
526 | "Starting link down tmo.\n"); | |
527 | atomic_set(&qedf->link_down_tmo_valid, 1); | |
528 | } | |
84b2ba6e | 529 | qedf->vlan_id = 0; |
61d8658b DC |
530 | qedf_update_link_speed(qedf, link); |
531 | queue_delayed_work(qedf->link_update_wq, &qedf->link_update, | |
532 | qedf_link_down_tmo * HZ); | |
533 | } | |
534 | } | |
535 | ||
536 | ||
537 | static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) | |
538 | { | |
539 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; | |
84b2ba6e | 540 | u8 tmp_prio; |
61d8658b DC |
541 | |
542 | QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " | |
543 | "prio=%d.\n", get->operational.valid, get->operational.enabled, | |
544 | get->operational.app_prio.fcoe); | |
545 | ||
546 | if (get->operational.enabled && get->operational.valid) { | |
547 | /* If DCBX was already negotiated on link up then just exit */ | |
548 | if (atomic_read(&qedf->dcbx) == QEDF_DCBX_DONE) { | |
549 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
550 | "DCBX already set on link up.\n"); | |
551 | return; | |
552 | } | |
553 | ||
554 | atomic_set(&qedf->dcbx, QEDF_DCBX_DONE); | |
555 | ||
84b2ba6e CD |
556 | /* |
557 | * Set the 8021q priority in the following manner: | |
558 | * | |
559 | * 1. If a modparam is set use that | |
560 | * 2. If the value is not between 0..7 use the default | |
561 | * 3. Use the priority we get from the DCBX app tag | |
562 | */ | |
563 | tmp_prio = get->operational.app_prio.fcoe; | |
564 | if (qedf_default_prio > -1) | |
565 | qedf->prio = qedf_default_prio; | |
566 | else if (tmp_prio < 0 || tmp_prio > 7) { | |
567 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
568 | "FIP/FCoE prio %d out of range, setting to %d.\n", | |
569 | tmp_prio, QEDF_DEFAULT_PRIO); | |
570 | qedf->prio = QEDF_DEFAULT_PRIO; | |
571 | } else | |
572 | qedf->prio = tmp_prio; | |
573 | ||
ba17d379 CD |
574 | if (atomic_read(&qedf->link_state) == QEDF_LINK_UP && |
575 | !qedf_dcbx_no_wait) { | |
61d8658b DC |
576 | if (atomic_read(&qedf->link_down_tmo_valid) > 0) |
577 | queue_delayed_work(qedf->link_update_wq, | |
578 | &qedf->link_recovery, 0); | |
579 | else | |
580 | queue_delayed_work(qedf->link_update_wq, | |
581 | &qedf->link_update, 0); | |
582 | atomic_set(&qedf->link_down_tmo_valid, 0); | |
583 | } | |
584 | } | |
585 | ||
586 | } | |
587 | ||
588 | static u32 qedf_get_login_failures(void *cookie) | |
589 | { | |
590 | struct qedf_ctx *qedf; | |
591 | ||
592 | qedf = (struct qedf_ctx *)cookie; | |
593 | return qedf->flogi_failed; | |
594 | } | |
595 | ||
596 | static struct qed_fcoe_cb_ops qedf_cb_ops = { | |
597 | { | |
598 | .link_update = qedf_link_update, | |
599 | .dcbx_aen = qedf_dcbx_handler, | |
8673daf4 | 600 | .get_generic_tlv_data = qedf_get_generic_tlv_data, |
642a0b37 | 601 | .get_protocol_tlv_data = qedf_get_protocol_tlv_data, |
61d8658b DC |
602 | } |
603 | }; | |
604 | ||
605 | /* | |
606 | * Various transport templates. | |
607 | */ | |
608 | ||
609 | static struct scsi_transport_template *qedf_fc_transport_template; | |
610 | static struct scsi_transport_template *qedf_fc_vport_transport_template; | |
611 | ||
612 | /* | |
613 | * SCSI EH handlers | |
614 | */ | |
615 | static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) | |
616 | { | |
617 | struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); | |
618 | struct fc_rport_libfc_priv *rp = rport->dd_data; | |
619 | struct qedf_rport *fcport; | |
620 | struct fc_lport *lport; | |
621 | struct qedf_ctx *qedf; | |
622 | struct qedf_ioreq *io_req; | |
623 | int rc = FAILED; | |
624 | int rval; | |
625 | ||
626 | if (fc_remote_port_chkready(rport)) { | |
627 | QEDF_ERR(NULL, "rport not ready\n"); | |
628 | goto out; | |
629 | } | |
630 | ||
631 | lport = shost_priv(sc_cmd->device->host); | |
632 | qedf = (struct qedf_ctx *)lport_priv(lport); | |
633 | ||
634 | if ((lport->state != LPORT_ST_READY) || !(lport->link_up)) { | |
635 | QEDF_ERR(&(qedf->dbg_ctx), "link not ready.\n"); | |
636 | goto out; | |
637 | } | |
638 | ||
639 | fcport = (struct qedf_rport *)&rp[1]; | |
640 | ||
641 | io_req = (struct qedf_ioreq *)sc_cmd->SCp.ptr; | |
642 | if (!io_req) { | |
643 | QEDF_ERR(&(qedf->dbg_ctx), "io_req is NULL.\n"); | |
644 | rc = SUCCESS; | |
645 | goto out; | |
646 | } | |
647 | ||
61d8658b DC |
648 | QEDF_ERR(&(qedf->dbg_ctx), "Aborting io_req sc_cmd=%p xid=0x%x " |
649 | "fp_idx=%d.\n", sc_cmd, io_req->xid, io_req->fp_idx); | |
650 | ||
651 | if (qedf->stop_io_on_error) { | |
652 | qedf_stop_all_io(qedf); | |
653 | rc = SUCCESS; | |
654 | goto out; | |
655 | } | |
656 | ||
657 | init_completion(&io_req->abts_done); | |
658 | rval = qedf_initiate_abts(io_req, true); | |
659 | if (rval) { | |
660 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n"); | |
661 | goto out; | |
662 | } | |
663 | ||
664 | wait_for_completion(&io_req->abts_done); | |
665 | ||
666 | if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || | |
667 | io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || | |
668 | io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { | |
669 | /* | |
670 | * If we get a reponse to the abort this is success from | |
671 | * the perspective that all references to the command have | |
672 | * been removed from the driver and firmware | |
673 | */ | |
674 | rc = SUCCESS; | |
675 | } else { | |
676 | /* If the abort and cleanup failed then return a failure */ | |
677 | rc = FAILED; | |
678 | } | |
679 | ||
680 | if (rc == SUCCESS) | |
681 | QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n", | |
682 | io_req->xid); | |
683 | else | |
684 | QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n", | |
685 | io_req->xid); | |
686 | ||
687 | out: | |
688 | return rc; | |
689 | } | |
690 | ||
691 | static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) | |
692 | { | |
693 | QEDF_ERR(NULL, "TARGET RESET Issued..."); | |
694 | return qedf_initiate_tmf(sc_cmd, FCP_TMF_TGT_RESET); | |
695 | } | |
696 | ||
697 | static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) | |
698 | { | |
699 | QEDF_ERR(NULL, "LUN RESET Issued...\n"); | |
700 | return qedf_initiate_tmf(sc_cmd, FCP_TMF_LUN_RESET); | |
701 | } | |
702 | ||
703 | void qedf_wait_for_upload(struct qedf_ctx *qedf) | |
704 | { | |
705 | while (1) { | |
706 | if (atomic_read(&qedf->num_offloads)) | |
707 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
708 | "Waiting for all uploads to complete.\n"); | |
709 | else | |
710 | break; | |
711 | msleep(500); | |
712 | } | |
713 | } | |
714 | ||
5cf446d2 CD |
715 | /* Performs soft reset of qedf_ctx by simulating a link down/up */ |
716 | static void qedf_ctx_soft_reset(struct fc_lport *lport) | |
61d8658b | 717 | { |
61d8658b DC |
718 | struct qedf_ctx *qedf; |
719 | ||
61d8658b DC |
720 | if (lport->vport) { |
721 | QEDF_ERR(NULL, "Cannot issue host reset on NPIV port.\n"); | |
5cf446d2 | 722 | return; |
61d8658b DC |
723 | } |
724 | ||
5cf446d2 | 725 | qedf = lport_priv(lport); |
61d8658b DC |
726 | |
727 | /* For host reset, essentially do a soft link up/down */ | |
728 | atomic_set(&qedf->link_state, QEDF_LINK_DOWN); | |
61d8658b DC |
729 | queue_delayed_work(qedf->link_update_wq, &qedf->link_update, |
730 | 0); | |
731 | qedf_wait_for_upload(qedf); | |
732 | atomic_set(&qedf->link_state, QEDF_LINK_UP); | |
733 | qedf->vlan_id = 0; | |
734 | queue_delayed_work(qedf->link_update_wq, &qedf->link_update, | |
735 | 0); | |
5cf446d2 CD |
736 | } |
737 | ||
738 | /* Reset the host by gracefully logging out and then logging back in */ | |
739 | static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) | |
740 | { | |
741 | struct fc_lport *lport; | |
742 | struct qedf_ctx *qedf; | |
f3690a89 CD |
743 | struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); |
744 | struct fc_rport_libfc_priv *rp = rport->dd_data; | |
745 | struct qedf_rport *fcport = (struct qedf_rport *)&rp[1]; | |
746 | int rval; | |
747 | ||
748 | rval = fc_remote_port_chkready(rport); | |
749 | ||
750 | if (rval) { | |
751 | QEDF_ERR(NULL, "device_reset rport not ready\n"); | |
752 | return FAILED; | |
753 | } | |
754 | ||
755 | if (fcport == NULL) { | |
756 | QEDF_ERR(NULL, "device_reset: rport is NULL\n"); | |
757 | return FAILED; | |
758 | } | |
5cf446d2 CD |
759 | |
760 | lport = shost_priv(sc_cmd->device->host); | |
761 | qedf = lport_priv(lport); | |
762 | ||
763 | if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN || | |
764 | test_bit(QEDF_UNLOADING, &qedf->flags)) | |
765 | return FAILED; | |
766 | ||
767 | QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..."); | |
768 | ||
769 | qedf_ctx_soft_reset(lport); | |
61d8658b DC |
770 | |
771 | return SUCCESS; | |
772 | } | |
773 | ||
774 | static int qedf_slave_configure(struct scsi_device *sdev) | |
775 | { | |
776 | if (qedf_queue_depth) { | |
777 | scsi_change_queue_depth(sdev, qedf_queue_depth); | |
778 | } | |
779 | ||
780 | return 0; | |
781 | } | |
782 | ||
783 | static struct scsi_host_template qedf_host_template = { | |
784 | .module = THIS_MODULE, | |
785 | .name = QEDF_MODULE_NAME, | |
786 | .this_id = -1, | |
a7746f1e | 787 | .cmd_per_lun = 32, |
61d8658b DC |
788 | .max_sectors = 0xffff, |
789 | .queuecommand = qedf_queuecommand, | |
790 | .shost_attrs = qedf_host_attrs, | |
791 | .eh_abort_handler = qedf_eh_abort, | |
792 | .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ | |
793 | .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ | |
794 | .eh_host_reset_handler = qedf_eh_host_reset, | |
795 | .slave_configure = qedf_slave_configure, | |
796 | .dma_boundary = QED_HW_DMA_BOUNDARY, | |
797 | .sg_tablesize = QEDF_MAX_BDS_PER_CMD, | |
798 | .can_queue = FCOE_PARAMS_NUM_TASKS, | |
6088cfaa | 799 | .change_queue_depth = scsi_change_queue_depth, |
61d8658b DC |
800 | }; |
801 | ||
802 | static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) | |
803 | { | |
804 | int rc; | |
805 | ||
806 | spin_lock(&qedf_global_lock); | |
807 | rc = fcoe_get_paged_crc_eof(skb, tlen, &qedf_global); | |
808 | spin_unlock(&qedf_global_lock); | |
809 | ||
810 | return rc; | |
811 | } | |
812 | ||
813 | static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) | |
814 | { | |
815 | struct qedf_rport *fcport; | |
816 | struct fc_rport_priv *rdata; | |
817 | ||
818 | rcu_read_lock(); | |
819 | list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { | |
820 | rdata = fcport->rdata; | |
821 | if (rdata == NULL) | |
822 | continue; | |
823 | if (rdata->ids.port_id == port_id) { | |
824 | rcu_read_unlock(); | |
825 | return fcport; | |
826 | } | |
827 | } | |
828 | rcu_read_unlock(); | |
829 | ||
830 | /* Return NULL to caller to let them know fcport was not found */ | |
831 | return NULL; | |
832 | } | |
833 | ||
834 | /* Transmits an ELS frame over an offloaded session */ | |
835 | static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) | |
836 | { | |
837 | struct fc_frame_header *fh; | |
838 | int rc = 0; | |
839 | ||
840 | fh = fc_frame_header_get(fp); | |
841 | if ((fh->fh_type == FC_TYPE_ELS) && | |
842 | (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { | |
843 | switch (fc_frame_payload_op(fp)) { | |
844 | case ELS_ADISC: | |
845 | qedf_send_adisc(fcport, fp); | |
846 | rc = 1; | |
847 | break; | |
848 | } | |
849 | } | |
850 | ||
851 | return rc; | |
852 | } | |
853 | ||
854 | /** | |
855 | * qedf_xmit - qedf FCoE frame transmit function | |
856 | * | |
857 | */ | |
858 | static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) | |
859 | { | |
860 | struct fc_lport *base_lport; | |
861 | struct qedf_ctx *qedf; | |
862 | struct ethhdr *eh; | |
863 | struct fcoe_crc_eof *cp; | |
864 | struct sk_buff *skb; | |
865 | struct fc_frame_header *fh; | |
866 | struct fcoe_hdr *hp; | |
867 | u8 sof, eof; | |
868 | u32 crc; | |
869 | unsigned int hlen, tlen, elen; | |
870 | int wlen; | |
871 | struct fc_stats *stats; | |
872 | struct fc_lport *tmp_lport; | |
873 | struct fc_lport *vn_port = NULL; | |
874 | struct qedf_rport *fcport; | |
875 | int rc; | |
876 | u16 vlan_tci = 0; | |
877 | ||
878 | qedf = (struct qedf_ctx *)lport_priv(lport); | |
879 | ||
880 | fh = fc_frame_header_get(fp); | |
881 | skb = fp_skb(fp); | |
882 | ||
883 | /* Filter out traffic to other NPIV ports on the same host */ | |
884 | if (lport->vport) | |
885 | base_lport = shost_priv(vport_to_shost(lport->vport)); | |
886 | else | |
887 | base_lport = lport; | |
888 | ||
889 | /* Flag if the destination is the base port */ | |
890 | if (base_lport->port_id == ntoh24(fh->fh_d_id)) { | |
891 | vn_port = base_lport; | |
892 | } else { | |
893 | /* Got through the list of vports attached to the base_lport | |
894 | * and see if we have a match with the destination address. | |
895 | */ | |
896 | list_for_each_entry(tmp_lport, &base_lport->vports, list) { | |
897 | if (tmp_lport->port_id == ntoh24(fh->fh_d_id)) { | |
898 | vn_port = tmp_lport; | |
899 | break; | |
900 | } | |
901 | } | |
902 | } | |
903 | if (vn_port && ntoh24(fh->fh_d_id) != FC_FID_FLOGI) { | |
904 | struct fc_rport_priv *rdata = NULL; | |
905 | ||
906 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, | |
907 | "Dropping FCoE frame to %06x.\n", ntoh24(fh->fh_d_id)); | |
908 | kfree_skb(skb); | |
909 | rdata = fc_rport_lookup(lport, ntoh24(fh->fh_d_id)); | |
910 | if (rdata) | |
911 | rdata->retries = lport->max_rport_retry_count; | |
912 | return -EINVAL; | |
913 | } | |
914 | /* End NPIV filtering */ | |
915 | ||
916 | if (!qedf->ctlr.sel_fcf) { | |
917 | kfree_skb(skb); | |
918 | return 0; | |
919 | } | |
920 | ||
921 | if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { | |
922 | QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n"); | |
923 | kfree_skb(skb); | |
924 | return 0; | |
925 | } | |
926 | ||
927 | if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { | |
928 | QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n"); | |
929 | kfree_skb(skb); | |
930 | return 0; | |
931 | } | |
932 | ||
933 | if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { | |
934 | if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) | |
935 | return 0; | |
936 | } | |
937 | ||
938 | /* Check to see if this needs to be sent on an offloaded session */ | |
939 | fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); | |
940 | ||
941 | if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
942 | rc = qedf_xmit_l2_frame(fcport, fp); | |
943 | /* | |
944 | * If the frame was successfully sent over the middle path | |
945 | * then do not try to also send it over the LL2 path | |
946 | */ | |
947 | if (rc) | |
948 | return 0; | |
949 | } | |
950 | ||
951 | sof = fr_sof(fp); | |
952 | eof = fr_eof(fp); | |
953 | ||
954 | elen = sizeof(struct ethhdr); | |
955 | hlen = sizeof(struct fcoe_hdr); | |
956 | tlen = sizeof(struct fcoe_crc_eof); | |
957 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; | |
958 | ||
959 | skb->ip_summed = CHECKSUM_NONE; | |
960 | crc = fcoe_fc_crc(fp); | |
961 | ||
962 | /* copy port crc and eof to the skb buff */ | |
963 | if (skb_is_nonlinear(skb)) { | |
964 | skb_frag_t *frag; | |
965 | ||
966 | if (qedf_get_paged_crc_eof(skb, tlen)) { | |
967 | kfree_skb(skb); | |
968 | return -ENOMEM; | |
969 | } | |
970 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; | |
971 | cp = kmap_atomic(skb_frag_page(frag)) + frag->page_offset; | |
972 | } else { | |
4df864c1 | 973 | cp = skb_put(skb, tlen); |
61d8658b DC |
974 | } |
975 | ||
976 | memset(cp, 0, sizeof(*cp)); | |
977 | cp->fcoe_eof = eof; | |
978 | cp->fcoe_crc32 = cpu_to_le32(~crc); | |
979 | if (skb_is_nonlinear(skb)) { | |
980 | kunmap_atomic(cp); | |
981 | cp = NULL; | |
982 | } | |
983 | ||
984 | ||
985 | /* adjust skb network/transport offsets to match mac/fcoe/port */ | |
986 | skb_push(skb, elen + hlen); | |
987 | skb_reset_mac_header(skb); | |
988 | skb_reset_network_header(skb); | |
989 | skb->mac_len = elen; | |
990 | skb->protocol = htons(ETH_P_FCOE); | |
991 | ||
cf291163 CD |
992 | /* |
993 | * Add VLAN tag to non-offload FCoE frame based on current stored VLAN | |
994 | * for FIP/FCoE traffic. | |
995 | */ | |
61d8658b DC |
996 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), qedf->vlan_id); |
997 | ||
998 | /* fill up mac and fcoe headers */ | |
999 | eh = eth_hdr(skb); | |
1000 | eh->h_proto = htons(ETH_P_FCOE); | |
1001 | if (qedf->ctlr.map_dest) | |
1002 | fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); | |
1003 | else | |
1004 | /* insert GW address */ | |
1005 | ether_addr_copy(eh->h_dest, qedf->ctlr.dest_addr); | |
1006 | ||
1007 | /* Set the source MAC address */ | |
a3cd42a9 | 1008 | ether_addr_copy(eh->h_source, qedf->data_src_addr); |
61d8658b DC |
1009 | |
1010 | hp = (struct fcoe_hdr *)(eh + 1); | |
1011 | memset(hp, 0, sizeof(*hp)); | |
1012 | if (FC_FCOE_VER) | |
1013 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); | |
1014 | hp->fcoe_sof = sof; | |
1015 | ||
1016 | /*update tx stats */ | |
1017 | stats = per_cpu_ptr(lport->stats, get_cpu()); | |
1018 | stats->TxFrames++; | |
1019 | stats->TxWords += wlen; | |
1020 | put_cpu(); | |
1021 | ||
1022 | /* Get VLAN ID from skb for printing purposes */ | |
1023 | __vlan_hwaccel_get_tag(skb, &vlan_tci); | |
1024 | ||
1025 | /* send down to lld */ | |
1026 | fr_dev(fp) = lport; | |
1027 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " | |
1028 | "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n", | |
1029 | ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, | |
1030 | vlan_tci); | |
1031 | if (qedf_dump_frames) | |
1032 | print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, | |
1033 | 1, skb->data, skb->len, false); | |
cac6f691 | 1034 | qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); |
61d8658b DC |
1035 | |
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) | |
1040 | { | |
1041 | int rval = 0; | |
1042 | u32 *pbl; | |
1043 | dma_addr_t page; | |
1044 | int num_pages; | |
1045 | ||
1046 | /* Calculate appropriate queue and PBL sizes */ | |
1047 | fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); | |
1048 | fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); | |
1049 | fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * | |
1050 | sizeof(void *); | |
1051 | fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; | |
1052 | ||
750afb08 LC |
1053 | fcport->sq = dma_alloc_coherent(&qedf->pdev->dev, fcport->sq_mem_size, |
1054 | &fcport->sq_dma, GFP_KERNEL); | |
61d8658b | 1055 | if (!fcport->sq) { |
32eebb31 | 1056 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n"); |
61d8658b DC |
1057 | rval = 1; |
1058 | goto out; | |
1059 | } | |
61d8658b | 1060 | |
750afb08 LC |
1061 | fcport->sq_pbl = dma_alloc_coherent(&qedf->pdev->dev, |
1062 | fcport->sq_pbl_size, | |
1063 | &fcport->sq_pbl_dma, GFP_KERNEL); | |
61d8658b | 1064 | if (!fcport->sq_pbl) { |
32eebb31 | 1065 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n"); |
61d8658b DC |
1066 | rval = 1; |
1067 | goto out_free_sq; | |
1068 | } | |
61d8658b DC |
1069 | |
1070 | /* Create PBL */ | |
1071 | num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; | |
1072 | page = fcport->sq_dma; | |
1073 | pbl = (u32 *)fcport->sq_pbl; | |
1074 | ||
1075 | while (num_pages--) { | |
1076 | *pbl = U64_LO(page); | |
1077 | pbl++; | |
1078 | *pbl = U64_HI(page); | |
1079 | pbl++; | |
1080 | page += QEDF_PAGE_SIZE; | |
1081 | } | |
1082 | ||
1083 | return rval; | |
1084 | ||
1085 | out_free_sq: | |
1086 | dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, fcport->sq, | |
1087 | fcport->sq_dma); | |
1088 | out: | |
1089 | return rval; | |
1090 | } | |
1091 | ||
1092 | static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) | |
1093 | { | |
1094 | if (fcport->sq_pbl) | |
1095 | dma_free_coherent(&qedf->pdev->dev, fcport->sq_pbl_size, | |
1096 | fcport->sq_pbl, fcport->sq_pbl_dma); | |
1097 | if (fcport->sq) | |
1098 | dma_free_coherent(&qedf->pdev->dev, fcport->sq_mem_size, | |
1099 | fcport->sq, fcport->sq_dma); | |
1100 | } | |
1101 | ||
1102 | static int qedf_offload_connection(struct qedf_ctx *qedf, | |
1103 | struct qedf_rport *fcport) | |
1104 | { | |
1105 | struct qed_fcoe_params_offload conn_info; | |
1106 | u32 port_id; | |
61d8658b DC |
1107 | int rval; |
1108 | uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); | |
1109 | ||
1110 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " | |
1111 | "portid=%06x.\n", fcport->rdata->ids.port_id); | |
1112 | rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, | |
1113 | &fcport->fw_cid, &fcport->p_doorbell); | |
1114 | if (rval) { | |
1115 | QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " | |
1116 | "for portid=%06x.\n", fcport->rdata->ids.port_id); | |
1117 | rval = 1; /* For some reason qed returns 0 on failure here */ | |
1118 | goto out; | |
1119 | } | |
1120 | ||
1121 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " | |
1122 | "fw_cid=%08x handle=%d.\n", fcport->rdata->ids.port_id, | |
1123 | fcport->fw_cid, fcport->handle); | |
1124 | ||
1125 | memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); | |
1126 | ||
1127 | /* Fill in the offload connection info */ | |
1128 | conn_info.sq_pbl_addr = fcport->sq_pbl_dma; | |
1129 | ||
1130 | conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); | |
1131 | conn_info.sq_next_page_addr = | |
1132 | (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); | |
1133 | ||
1134 | /* Need to use our FCoE MAC for the offload session */ | |
a3cd42a9 | 1135 | ether_addr_copy(conn_info.src_mac, qedf->data_src_addr); |
61d8658b DC |
1136 | |
1137 | ether_addr_copy(conn_info.dst_mac, qedf->ctlr.dest_addr); | |
1138 | ||
1139 | conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; | |
1140 | conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov / 20; | |
1141 | conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ | |
1142 | conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; | |
1143 | ||
1144 | /* Set VLAN data */ | |
1145 | conn_info.vlan_tag = qedf->vlan_id << | |
1146 | FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; | |
1147 | conn_info.vlan_tag |= | |
84b2ba6e | 1148 | qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; |
61d8658b DC |
1149 | conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << |
1150 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); | |
1151 | ||
1152 | /* Set host port source id */ | |
1153 | port_id = fc_host_port_id(qedf->lport->host); | |
1154 | fcport->sid = port_id; | |
1155 | conn_info.s_id.addr_hi = (port_id & 0x000000FF); | |
1156 | conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; | |
1157 | conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; | |
1158 | ||
1159 | conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; | |
1160 | ||
1161 | /* Set remote port destination id */ | |
1162 | port_id = fcport->rdata->rport->port_id; | |
1163 | conn_info.d_id.addr_hi = (port_id & 0x000000FF); | |
1164 | conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; | |
1165 | conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; | |
1166 | ||
1167 | conn_info.def_q_idx = 0; /* Default index for send queue? */ | |
1168 | ||
1169 | /* Set FC-TAPE specific flags if needed */ | |
1170 | if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { | |
1171 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, | |
1172 | "Enable CONF, REC for portid=%06x.\n", | |
1173 | fcport->rdata->ids.port_id); | |
1174 | conn_info.flags |= 1 << | |
1175 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; | |
1176 | conn_info.flags |= | |
1177 | ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << | |
1178 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; | |
1179 | } | |
1180 | ||
1181 | rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); | |
1182 | if (rval) { | |
1183 | QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " | |
1184 | "for portid=%06x.\n", fcport->rdata->ids.port_id); | |
1185 | goto out_free_conn; | |
1186 | } else | |
1187 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " | |
1188 | "succeeded portid=%06x total_sqe=%d.\n", | |
1189 | fcport->rdata->ids.port_id, total_sqe); | |
1190 | ||
1191 | spin_lock_init(&fcport->rport_lock); | |
1192 | atomic_set(&fcport->free_sqes, total_sqe); | |
1193 | return 0; | |
1194 | out_free_conn: | |
1195 | qed_ops->release_conn(qedf->cdev, fcport->handle); | |
1196 | out: | |
1197 | return rval; | |
1198 | } | |
1199 | ||
1200 | #define QEDF_TERM_BUFF_SIZE 10 | |
1201 | static void qedf_upload_connection(struct qedf_ctx *qedf, | |
1202 | struct qedf_rport *fcport) | |
1203 | { | |
1204 | void *term_params; | |
1205 | dma_addr_t term_params_dma; | |
1206 | ||
1207 | /* Term params needs to be a DMA coherent buffer as qed shared the | |
1208 | * physical DMA address with the firmware. The buffer may be used in | |
1209 | * the receive path so we may eventually have to move this. | |
1210 | */ | |
1211 | term_params = dma_alloc_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, | |
1212 | &term_params_dma, GFP_KERNEL); | |
1213 | ||
1214 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " | |
1215 | "port_id=%06x.\n", fcport->rdata->ids.port_id); | |
1216 | ||
1217 | qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); | |
1218 | qed_ops->release_conn(qedf->cdev, fcport->handle); | |
1219 | ||
1220 | dma_free_coherent(&qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, term_params, | |
1221 | term_params_dma); | |
1222 | } | |
1223 | ||
1224 | static void qedf_cleanup_fcport(struct qedf_ctx *qedf, | |
1225 | struct qedf_rport *fcport) | |
1226 | { | |
1227 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n", | |
1228 | fcport->rdata->ids.port_id); | |
1229 | ||
1230 | /* Flush any remaining i/o's before we upload the connection */ | |
1231 | qedf_flush_active_ios(fcport, -1); | |
1232 | ||
1233 | if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) | |
1234 | qedf_upload_connection(qedf, fcport); | |
1235 | qedf_free_sq(qedf, fcport); | |
1236 | fcport->rdata = NULL; | |
1237 | fcport->qedf = NULL; | |
1238 | } | |
1239 | ||
1240 | /** | |
1241 | * This event_callback is called after successful completion of libfc | |
1242 | * initiated target login. qedf can proceed with initiating the session | |
1243 | * establishment. | |
1244 | */ | |
1245 | static void qedf_rport_event_handler(struct fc_lport *lport, | |
1246 | struct fc_rport_priv *rdata, | |
1247 | enum fc_rport_event event) | |
1248 | { | |
1249 | struct qedf_ctx *qedf = lport_priv(lport); | |
1250 | struct fc_rport *rport = rdata->rport; | |
1251 | struct fc_rport_libfc_priv *rp; | |
1252 | struct qedf_rport *fcport; | |
1253 | u32 port_id; | |
1254 | int rval; | |
1255 | unsigned long flags; | |
1256 | ||
1257 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " | |
1258 | "port_id = 0x%x\n", event, rdata->ids.port_id); | |
1259 | ||
1260 | switch (event) { | |
1261 | case RPORT_EV_READY: | |
1262 | if (!rport) { | |
1263 | QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n"); | |
1264 | break; | |
1265 | } | |
1266 | ||
1267 | rp = rport->dd_data; | |
1268 | fcport = (struct qedf_rport *)&rp[1]; | |
1269 | fcport->qedf = qedf; | |
1270 | ||
1271 | if (atomic_read(&qedf->num_offloads) >= QEDF_MAX_SESSIONS) { | |
1272 | QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " | |
1273 | "portid=0x%x as max number of offloaded sessions " | |
1274 | "reached.\n", rdata->ids.port_id); | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | /* | |
1279 | * Don't try to offload the session again. Can happen when we | |
1280 | * get an ADISC | |
1281 | */ | |
1282 | if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
1283 | QEDF_WARN(&(qedf->dbg_ctx), "Session already " | |
1284 | "offloaded, portid=0x%x.\n", | |
1285 | rdata->ids.port_id); | |
1286 | return; | |
1287 | } | |
1288 | ||
1289 | if (rport->port_id == FC_FID_DIR_SERV) { | |
1290 | /* | |
1291 | * qedf_rport structure doesn't exist for | |
1292 | * directory server. | |
1293 | * We should not come here, as lport will | |
1294 | * take care of fabric login | |
1295 | */ | |
1296 | QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " | |
1297 | "exist for dir server port_id=%x\n", | |
1298 | rdata->ids.port_id); | |
1299 | break; | |
1300 | } | |
1301 | ||
1302 | if (rdata->spp_type != FC_TYPE_FCP) { | |
1303 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
acef2690 | 1304 | "Not offloading since spp type isn't FCP\n"); |
61d8658b DC |
1305 | break; |
1306 | } | |
1307 | if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { | |
1308 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1309 | "Not FCP target so not offloading\n"); | |
1310 | break; | |
1311 | } | |
1312 | ||
1313 | fcport->rdata = rdata; | |
1314 | fcport->rport = rport; | |
1315 | ||
1316 | rval = qedf_alloc_sq(qedf, fcport); | |
1317 | if (rval) { | |
1318 | qedf_cleanup_fcport(qedf, fcport); | |
1319 | break; | |
1320 | } | |
1321 | ||
1322 | /* Set device type */ | |
1323 | if (rdata->flags & FC_RP_FLAGS_RETRY && | |
1324 | rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && | |
1325 | !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { | |
1326 | fcport->dev_type = QEDF_RPORT_TYPE_TAPE; | |
1327 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1328 | "portid=%06x is a TAPE device.\n", | |
1329 | rdata->ids.port_id); | |
1330 | } else { | |
1331 | fcport->dev_type = QEDF_RPORT_TYPE_DISK; | |
1332 | } | |
1333 | ||
1334 | rval = qedf_offload_connection(qedf, fcport); | |
1335 | if (rval) { | |
1336 | qedf_cleanup_fcport(qedf, fcport); | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | /* Add fcport to list of qedf_ctx list of offloaded ports */ | |
1341 | spin_lock_irqsave(&qedf->hba_lock, flags); | |
1342 | list_add_rcu(&fcport->peers, &qedf->fcports); | |
1343 | spin_unlock_irqrestore(&qedf->hba_lock, flags); | |
1344 | ||
1345 | /* | |
1346 | * Set the session ready bit to let everyone know that this | |
1347 | * connection is ready for I/O | |
1348 | */ | |
1349 | set_bit(QEDF_RPORT_SESSION_READY, &fcport->flags); | |
1350 | atomic_inc(&qedf->num_offloads); | |
1351 | ||
1352 | break; | |
1353 | case RPORT_EV_LOGO: | |
1354 | case RPORT_EV_FAILED: | |
1355 | case RPORT_EV_STOP: | |
1356 | port_id = rdata->ids.port_id; | |
1357 | if (port_id == FC_FID_DIR_SERV) | |
1358 | break; | |
1359 | ||
1360 | if (!rport) { | |
1361 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
1362 | "port_id=%x - rport notcreated Yet!!\n", port_id); | |
1363 | break; | |
1364 | } | |
1365 | rp = rport->dd_data; | |
1366 | /* | |
1367 | * Perform session upload. Note that rdata->peers is already | |
1368 | * removed from disc->rports list before we get this event. | |
1369 | */ | |
1370 | fcport = (struct qedf_rport *)&rp[1]; | |
1371 | ||
1372 | /* Only free this fcport if it is offloaded already */ | |
1373 | if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
1374 | set_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags); | |
1375 | qedf_cleanup_fcport(qedf, fcport); | |
1376 | ||
1377 | /* | |
1378 | * Remove fcport to list of qedf_ctx list of offloaded | |
1379 | * ports | |
1380 | */ | |
1381 | spin_lock_irqsave(&qedf->hba_lock, flags); | |
1382 | list_del_rcu(&fcport->peers); | |
1383 | spin_unlock_irqrestore(&qedf->hba_lock, flags); | |
1384 | ||
1385 | clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, | |
1386 | &fcport->flags); | |
1387 | atomic_dec(&qedf->num_offloads); | |
1388 | } | |
1389 | ||
1390 | break; | |
1391 | ||
1392 | case RPORT_EV_NONE: | |
1393 | break; | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | static void qedf_abort_io(struct fc_lport *lport) | |
1398 | { | |
1399 | /* NO-OP but need to fill in the template */ | |
1400 | } | |
1401 | ||
1402 | static void qedf_fcp_cleanup(struct fc_lport *lport) | |
1403 | { | |
1404 | /* | |
1405 | * NO-OP but need to fill in template to prevent a NULL | |
1406 | * function pointer dereference during link down. I/Os | |
1407 | * will be flushed when port is uploaded. | |
1408 | */ | |
1409 | } | |
1410 | ||
1411 | static struct libfc_function_template qedf_lport_template = { | |
1412 | .frame_send = qedf_xmit, | |
1413 | .fcp_abort_io = qedf_abort_io, | |
1414 | .fcp_cleanup = qedf_fcp_cleanup, | |
1415 | .rport_event_callback = qedf_rport_event_handler, | |
1416 | .elsct_send = qedf_elsct_send, | |
1417 | }; | |
1418 | ||
1419 | static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) | |
1420 | { | |
1421 | fcoe_ctlr_init(&qedf->ctlr, FIP_ST_AUTO); | |
1422 | ||
1423 | qedf->ctlr.send = qedf_fip_send; | |
61d8658b DC |
1424 | qedf->ctlr.get_src_addr = qedf_get_src_mac; |
1425 | ether_addr_copy(qedf->ctlr.ctl_src_addr, qedf->mac); | |
1426 | } | |
1427 | ||
5185b328 CD |
1428 | static void qedf_setup_fdmi(struct qedf_ctx *qedf) |
1429 | { | |
1430 | struct fc_lport *lport = qedf->lport; | |
1431 | struct fc_host_attrs *fc_host = shost_to_fc_host(lport->host); | |
1432 | u8 buf[8]; | |
1433 | int i, pos; | |
1434 | ||
1435 | /* | |
1436 | * fdmi_enabled needs to be set for libfc to execute FDMI registration. | |
1437 | */ | |
1438 | lport->fdmi_enabled = 1; | |
1439 | ||
1440 | /* | |
1441 | * Setup the necessary fc_host attributes to that will be used to fill | |
1442 | * in the FDMI information. | |
1443 | */ | |
1444 | ||
1445 | /* Get the PCI-e Device Serial Number Capability */ | |
1446 | pos = pci_find_ext_capability(qedf->pdev, PCI_EXT_CAP_ID_DSN); | |
1447 | if (pos) { | |
1448 | pos += 4; | |
1449 | for (i = 0; i < 8; i++) | |
1450 | pci_read_config_byte(qedf->pdev, pos + i, &buf[i]); | |
1451 | ||
1452 | snprintf(fc_host->serial_number, | |
1453 | sizeof(fc_host->serial_number), | |
1454 | "%02X%02X%02X%02X%02X%02X%02X%02X", | |
1455 | buf[7], buf[6], buf[5], buf[4], | |
1456 | buf[3], buf[2], buf[1], buf[0]); | |
1457 | } else | |
1458 | snprintf(fc_host->serial_number, | |
1459 | sizeof(fc_host->serial_number), "Unknown"); | |
1460 | ||
1461 | snprintf(fc_host->manufacturer, | |
1462 | sizeof(fc_host->manufacturer), "%s", "Cavium Inc."); | |
1463 | ||
1464 | snprintf(fc_host->model, sizeof(fc_host->model), "%s", "QL41000"); | |
1465 | ||
1466 | snprintf(fc_host->model_description, sizeof(fc_host->model_description), | |
1467 | "%s", "QLogic FastLinQ QL41000 Series 10/25/40/50GGbE Controller" | |
1468 | "(FCoE)"); | |
1469 | ||
1470 | snprintf(fc_host->hardware_version, sizeof(fc_host->hardware_version), | |
1471 | "Rev %d", qedf->pdev->revision); | |
1472 | ||
1473 | snprintf(fc_host->driver_version, sizeof(fc_host->driver_version), | |
1474 | "%s", QEDF_VERSION); | |
1475 | ||
1476 | snprintf(fc_host->firmware_version, sizeof(fc_host->firmware_version), | |
1477 | "%d.%d.%d.%d", FW_MAJOR_VERSION, FW_MINOR_VERSION, | |
1478 | FW_REVISION_VERSION, FW_ENGINEERING_VERSION); | |
1479 | } | |
1480 | ||
61d8658b DC |
1481 | static int qedf_lport_setup(struct qedf_ctx *qedf) |
1482 | { | |
1483 | struct fc_lport *lport = qedf->lport; | |
1484 | ||
1485 | lport->link_up = 0; | |
1486 | lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; | |
1487 | lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; | |
1488 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | | |
1489 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
1490 | lport->boot_time = jiffies; | |
1491 | lport->e_d_tov = 2 * 1000; | |
1492 | lport->r_a_tov = 10 * 1000; | |
1493 | ||
1494 | /* Set NPIV support */ | |
1495 | lport->does_npiv = 1; | |
1496 | fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; | |
1497 | ||
1498 | fc_set_wwnn(lport, qedf->wwnn); | |
1499 | fc_set_wwpn(lport, qedf->wwpn); | |
1500 | ||
1501 | fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, 0); | |
1502 | ||
1503 | /* Allocate the exchange manager */ | |
1504 | fc_exch_mgr_alloc(lport, FC_CLASS_3, qedf->max_scsi_xid + 1, | |
1505 | qedf->max_els_xid, NULL); | |
1506 | ||
1507 | if (fc_lport_init_stats(lport)) | |
1508 | return -ENOMEM; | |
1509 | ||
1510 | /* Finish lport config */ | |
1511 | fc_lport_config(lport); | |
1512 | ||
1513 | /* Set max frame size */ | |
1514 | fc_set_mfs(lport, QEDF_MFS); | |
1515 | fc_host_maxframe_size(lport->host) = lport->mfs; | |
1516 | ||
1517 | /* Set default dev_loss_tmo based on module parameter */ | |
1518 | fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; | |
1519 | ||
1520 | /* Set symbolic node name */ | |
1521 | snprintf(fc_host_symbolic_name(lport->host), 256, | |
1522 | "QLogic %s v%s", QEDF_MODULE_NAME, QEDF_VERSION); | |
1523 | ||
5185b328 CD |
1524 | qedf_setup_fdmi(qedf); |
1525 | ||
61d8658b DC |
1526 | return 0; |
1527 | } | |
1528 | ||
1529 | /* | |
1530 | * NPIV functions | |
1531 | */ | |
1532 | ||
1533 | static int qedf_vport_libfc_config(struct fc_vport *vport, | |
1534 | struct fc_lport *lport) | |
1535 | { | |
1536 | lport->link_up = 0; | |
1537 | lport->qfull = 0; | |
1538 | lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; | |
1539 | lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; | |
1540 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | | |
1541 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); | |
1542 | lport->boot_time = jiffies; | |
1543 | lport->e_d_tov = 2 * 1000; | |
1544 | lport->r_a_tov = 10 * 1000; | |
1545 | lport->does_npiv = 1; /* Temporary until we add NPIV support */ | |
1546 | ||
1547 | /* Allocate stats for vport */ | |
1548 | if (fc_lport_init_stats(lport)) | |
1549 | return -ENOMEM; | |
1550 | ||
1551 | /* Finish lport config */ | |
1552 | fc_lport_config(lport); | |
1553 | ||
1554 | /* offload related configuration */ | |
1555 | lport->crc_offload = 0; | |
1556 | lport->seq_offload = 0; | |
1557 | lport->lro_enabled = 0; | |
1558 | lport->lro_xid = 0; | |
1559 | lport->lso_max = 0; | |
1560 | ||
1561 | return 0; | |
1562 | } | |
1563 | ||
1564 | static int qedf_vport_create(struct fc_vport *vport, bool disabled) | |
1565 | { | |
1566 | struct Scsi_Host *shost = vport_to_shost(vport); | |
1567 | struct fc_lport *n_port = shost_priv(shost); | |
1568 | struct fc_lport *vn_port; | |
1569 | struct qedf_ctx *base_qedf = lport_priv(n_port); | |
1570 | struct qedf_ctx *vport_qedf; | |
1571 | ||
1572 | char buf[32]; | |
1573 | int rc = 0; | |
1574 | ||
1575 | rc = fcoe_validate_vport_create(vport); | |
1576 | if (rc) { | |
1577 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); | |
1578 | QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " | |
1579 | "WWPN (0x%s) already exists.\n", buf); | |
1580 | goto err1; | |
1581 | } | |
1582 | ||
1583 | if (atomic_read(&base_qedf->link_state) != QEDF_LINK_UP) { | |
1584 | QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " | |
1585 | "because link is not up.\n"); | |
1586 | rc = -EIO; | |
1587 | goto err1; | |
1588 | } | |
1589 | ||
1590 | vn_port = libfc_vport_create(vport, sizeof(struct qedf_ctx)); | |
1591 | if (!vn_port) { | |
1592 | QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " | |
1593 | "for vport.\n"); | |
1594 | rc = -ENOMEM; | |
1595 | goto err1; | |
1596 | } | |
1597 | ||
1598 | fcoe_wwn_to_str(vport->port_name, buf, sizeof(buf)); | |
1599 | QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n", | |
1600 | buf); | |
1601 | ||
1602 | /* Copy some fields from base_qedf */ | |
1603 | vport_qedf = lport_priv(vn_port); | |
1604 | memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); | |
1605 | ||
1606 | /* Set qedf data specific to this vport */ | |
1607 | vport_qedf->lport = vn_port; | |
1608 | /* Use same hba_lock as base_qedf */ | |
1609 | vport_qedf->hba_lock = base_qedf->hba_lock; | |
1610 | vport_qedf->pdev = base_qedf->pdev; | |
1611 | vport_qedf->cmd_mgr = base_qedf->cmd_mgr; | |
1612 | init_completion(&vport_qedf->flogi_compl); | |
1613 | INIT_LIST_HEAD(&vport_qedf->fcports); | |
1614 | ||
1615 | rc = qedf_vport_libfc_config(vport, vn_port); | |
1616 | if (rc) { | |
1617 | QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " | |
1618 | "for lport stats.\n"); | |
1619 | goto err2; | |
1620 | } | |
1621 | ||
1622 | fc_set_wwnn(vn_port, vport->node_name); | |
1623 | fc_set_wwpn(vn_port, vport->port_name); | |
1624 | vport_qedf->wwnn = vn_port->wwnn; | |
1625 | vport_qedf->wwpn = vn_port->wwpn; | |
1626 | ||
1627 | vn_port->host->transportt = qedf_fc_vport_transport_template; | |
1628 | vn_port->host->can_queue = QEDF_MAX_ELS_XID; | |
1629 | vn_port->host->max_lun = qedf_max_lun; | |
1630 | vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; | |
1631 | vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; | |
1632 | ||
1633 | rc = scsi_add_host(vn_port->host, &vport->dev); | |
1634 | if (rc) { | |
1635 | QEDF_WARN(&(base_qedf->dbg_ctx), "Error adding Scsi_Host.\n"); | |
1636 | goto err2; | |
1637 | } | |
1638 | ||
1639 | /* Set default dev_loss_tmo based on module parameter */ | |
1640 | fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; | |
1641 | ||
1642 | /* Init libfc stuffs */ | |
1643 | memcpy(&vn_port->tt, &qedf_lport_template, | |
1644 | sizeof(qedf_lport_template)); | |
1645 | fc_exch_init(vn_port); | |
1646 | fc_elsct_init(vn_port); | |
1647 | fc_lport_init(vn_port); | |
1648 | fc_disc_init(vn_port); | |
1649 | fc_disc_config(vn_port, vn_port); | |
1650 | ||
1651 | ||
1652 | /* Allocate the exchange manager */ | |
1653 | shost = vport_to_shost(vport); | |
1654 | n_port = shost_priv(shost); | |
1655 | fc_exch_mgr_list_clone(n_port, vn_port); | |
1656 | ||
1657 | /* Set max frame size */ | |
1658 | fc_set_mfs(vn_port, QEDF_MFS); | |
1659 | ||
1660 | fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; | |
1661 | ||
1662 | if (disabled) { | |
1663 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
1664 | } else { | |
1665 | vn_port->boot_time = jiffies; | |
1666 | fc_fabric_login(vn_port); | |
1667 | fc_vport_setlink(vn_port); | |
1668 | } | |
1669 | ||
1670 | QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n", | |
1671 | vn_port); | |
1672 | ||
1673 | /* Set up debug context for vport */ | |
1674 | vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; | |
1675 | vport_qedf->dbg_ctx.pdev = base_qedf->pdev; | |
1676 | ||
1677 | err2: | |
1678 | scsi_host_put(vn_port->host); | |
1679 | err1: | |
1680 | return rc; | |
1681 | } | |
1682 | ||
1683 | static int qedf_vport_destroy(struct fc_vport *vport) | |
1684 | { | |
1685 | struct Scsi_Host *shost = vport_to_shost(vport); | |
1686 | struct fc_lport *n_port = shost_priv(shost); | |
1687 | struct fc_lport *vn_port = vport->dd_data; | |
4f4616ce CD |
1688 | struct qedf_ctx *qedf = lport_priv(vn_port); |
1689 | ||
1690 | if (!qedf) { | |
1691 | QEDF_ERR(NULL, "qedf is NULL.\n"); | |
1692 | goto out; | |
1693 | } | |
1694 | ||
1695 | /* Set unloading bit on vport qedf_ctx to prevent more I/O */ | |
1696 | set_bit(QEDF_UNLOADING, &qedf->flags); | |
61d8658b DC |
1697 | |
1698 | mutex_lock(&n_port->lp_mutex); | |
1699 | list_del(&vn_port->list); | |
1700 | mutex_unlock(&n_port->lp_mutex); | |
1701 | ||
1702 | fc_fabric_logoff(vn_port); | |
1703 | fc_lport_destroy(vn_port); | |
1704 | ||
1705 | /* Detach from scsi-ml */ | |
1706 | fc_remove_host(vn_port->host); | |
1707 | scsi_remove_host(vn_port->host); | |
1708 | ||
1709 | /* | |
1710 | * Only try to release the exchange manager if the vn_port | |
1711 | * configuration is complete. | |
1712 | */ | |
1713 | if (vn_port->state == LPORT_ST_READY) | |
1714 | fc_exch_mgr_free(vn_port); | |
1715 | ||
1716 | /* Free memory used by statistical counters */ | |
1717 | fc_lport_free_stats(vn_port); | |
1718 | ||
1719 | /* Release Scsi_Host */ | |
1720 | if (vn_port->host) | |
1721 | scsi_host_put(vn_port->host); | |
1722 | ||
4f4616ce | 1723 | out: |
61d8658b DC |
1724 | return 0; |
1725 | } | |
1726 | ||
1727 | static int qedf_vport_disable(struct fc_vport *vport, bool disable) | |
1728 | { | |
1729 | struct fc_lport *lport = vport->dd_data; | |
1730 | ||
1731 | if (disable) { | |
1732 | fc_vport_set_state(vport, FC_VPORT_DISABLED); | |
1733 | fc_fabric_logoff(lport); | |
1734 | } else { | |
1735 | lport->boot_time = jiffies; | |
1736 | fc_fabric_login(lport); | |
1737 | fc_vport_setlink(lport); | |
1738 | } | |
1739 | return 0; | |
1740 | } | |
1741 | ||
1742 | /* | |
1743 | * During removal we need to wait for all the vports associated with a port | |
1744 | * to be destroyed so we avoid a race condition where libfc is still trying | |
1745 | * to reap vports while the driver remove function has already reaped the | |
1746 | * driver contexts associated with the physical port. | |
1747 | */ | |
1748 | static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) | |
1749 | { | |
1750 | struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); | |
1751 | ||
1752 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, | |
1753 | "Entered.\n"); | |
1754 | while (fc_host->npiv_vports_inuse > 0) { | |
1755 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, | |
1756 | "Waiting for all vports to be reaped.\n"); | |
1757 | msleep(1000); | |
1758 | } | |
1759 | } | |
1760 | ||
1761 | /** | |
1762 | * qedf_fcoe_reset - Resets the fcoe | |
1763 | * | |
1764 | * @shost: shost the reset is from | |
1765 | * | |
1766 | * Returns: always 0 | |
1767 | */ | |
1768 | static int qedf_fcoe_reset(struct Scsi_Host *shost) | |
1769 | { | |
1770 | struct fc_lport *lport = shost_priv(shost); | |
1771 | ||
5cf446d2 | 1772 | qedf_ctx_soft_reset(lport); |
61d8658b DC |
1773 | return 0; |
1774 | } | |
1775 | ||
1776 | static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host | |
1777 | *shost) | |
1778 | { | |
1779 | struct fc_host_statistics *qedf_stats; | |
1780 | struct fc_lport *lport = shost_priv(shost); | |
1781 | struct qedf_ctx *qedf = lport_priv(lport); | |
1782 | struct qed_fcoe_stats *fw_fcoe_stats; | |
1783 | ||
1784 | qedf_stats = fc_get_host_stats(shost); | |
1785 | ||
1786 | /* We don't collect offload stats for specific NPIV ports */ | |
1787 | if (lport->vport) | |
1788 | goto out; | |
1789 | ||
1790 | fw_fcoe_stats = kmalloc(sizeof(struct qed_fcoe_stats), GFP_KERNEL); | |
1791 | if (!fw_fcoe_stats) { | |
1792 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " | |
1793 | "fw_fcoe_stats.\n"); | |
1794 | goto out; | |
1795 | } | |
1796 | ||
642a0b37 CD |
1797 | mutex_lock(&qedf->stats_mutex); |
1798 | ||
61d8658b DC |
1799 | /* Query firmware for offload stats */ |
1800 | qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); | |
1801 | ||
1802 | /* | |
1803 | * The expectation is that we add our offload stats to the stats | |
1804 | * being maintained by libfc each time the fc_get_host_status callback | |
1805 | * is invoked. The additions are not carried over for each call to | |
1806 | * the fc_get_host_stats callback. | |
1807 | */ | |
1808 | qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + | |
1809 | fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + | |
1810 | fw_fcoe_stats->fcoe_tx_other_pkt_cnt; | |
1811 | qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + | |
1812 | fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + | |
1813 | fw_fcoe_stats->fcoe_rx_other_pkt_cnt; | |
1814 | qedf_stats->fcp_input_megabytes += | |
1815 | do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); | |
1816 | qedf_stats->fcp_output_megabytes += | |
1817 | do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); | |
1818 | qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; | |
1819 | qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; | |
1820 | qedf_stats->invalid_crc_count += | |
1821 | fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; | |
1822 | qedf_stats->dumped_frames = | |
1823 | fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; | |
1824 | qedf_stats->error_frames += | |
1825 | fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; | |
1826 | qedf_stats->fcp_input_requests += qedf->input_requests; | |
1827 | qedf_stats->fcp_output_requests += qedf->output_requests; | |
1828 | qedf_stats->fcp_control_requests += qedf->control_requests; | |
1829 | qedf_stats->fcp_packet_aborts += qedf->packet_aborts; | |
1830 | qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; | |
1831 | ||
642a0b37 | 1832 | mutex_unlock(&qedf->stats_mutex); |
61d8658b DC |
1833 | kfree(fw_fcoe_stats); |
1834 | out: | |
1835 | return qedf_stats; | |
1836 | } | |
1837 | ||
1838 | static struct fc_function_template qedf_fc_transport_fn = { | |
1839 | .show_host_node_name = 1, | |
1840 | .show_host_port_name = 1, | |
1841 | .show_host_supported_classes = 1, | |
1842 | .show_host_supported_fc4s = 1, | |
1843 | .show_host_active_fc4s = 1, | |
1844 | .show_host_maxframe_size = 1, | |
1845 | ||
1846 | .show_host_port_id = 1, | |
1847 | .show_host_supported_speeds = 1, | |
1848 | .get_host_speed = fc_get_host_speed, | |
1849 | .show_host_speed = 1, | |
1850 | .show_host_port_type = 1, | |
1851 | .get_host_port_state = fc_get_host_port_state, | |
1852 | .show_host_port_state = 1, | |
1853 | .show_host_symbolic_name = 1, | |
1854 | ||
1855 | /* | |
1856 | * Tell FC transport to allocate enough space to store the backpointer | |
1857 | * for the associate qedf_rport struct. | |
1858 | */ | |
1859 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + | |
1860 | sizeof(struct qedf_rport)), | |
1861 | .show_rport_maxframe_size = 1, | |
1862 | .show_rport_supported_classes = 1, | |
1863 | .show_host_fabric_name = 1, | |
1864 | .show_starget_node_name = 1, | |
1865 | .show_starget_port_name = 1, | |
1866 | .show_starget_port_id = 1, | |
1867 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
1868 | .show_rport_dev_loss_tmo = 1, | |
1869 | .get_fc_host_stats = qedf_fc_get_host_stats, | |
1870 | .issue_fc_host_lip = qedf_fcoe_reset, | |
1871 | .vport_create = qedf_vport_create, | |
1872 | .vport_delete = qedf_vport_destroy, | |
1873 | .vport_disable = qedf_vport_disable, | |
1874 | .bsg_request = fc_lport_bsg_request, | |
1875 | }; | |
1876 | ||
1877 | static struct fc_function_template qedf_fc_vport_transport_fn = { | |
1878 | .show_host_node_name = 1, | |
1879 | .show_host_port_name = 1, | |
1880 | .show_host_supported_classes = 1, | |
1881 | .show_host_supported_fc4s = 1, | |
1882 | .show_host_active_fc4s = 1, | |
1883 | .show_host_maxframe_size = 1, | |
1884 | .show_host_port_id = 1, | |
1885 | .show_host_supported_speeds = 1, | |
1886 | .get_host_speed = fc_get_host_speed, | |
1887 | .show_host_speed = 1, | |
1888 | .show_host_port_type = 1, | |
1889 | .get_host_port_state = fc_get_host_port_state, | |
1890 | .show_host_port_state = 1, | |
1891 | .show_host_symbolic_name = 1, | |
1892 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + | |
1893 | sizeof(struct qedf_rport)), | |
1894 | .show_rport_maxframe_size = 1, | |
1895 | .show_rport_supported_classes = 1, | |
1896 | .show_host_fabric_name = 1, | |
1897 | .show_starget_node_name = 1, | |
1898 | .show_starget_port_name = 1, | |
1899 | .show_starget_port_id = 1, | |
1900 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, | |
1901 | .show_rport_dev_loss_tmo = 1, | |
1902 | .get_fc_host_stats = fc_get_host_stats, | |
1903 | .issue_fc_host_lip = qedf_fcoe_reset, | |
1904 | .bsg_request = fc_lport_bsg_request, | |
1905 | }; | |
1906 | ||
1907 | static bool qedf_fp_has_work(struct qedf_fastpath *fp) | |
1908 | { | |
1909 | struct qedf_ctx *qedf = fp->qedf; | |
1910 | struct global_queue *que; | |
1911 | struct qed_sb_info *sb_info = fp->sb_info; | |
21dd79e8 | 1912 | struct status_block_e4 *sb = sb_info->sb_virt; |
61d8658b DC |
1913 | u16 prod_idx; |
1914 | ||
1915 | /* Get the pointer to the global CQ this completion is on */ | |
1916 | que = qedf->global_queues[fp->sb_id]; | |
1917 | ||
1918 | /* Be sure all responses have been written to PI */ | |
1919 | rmb(); | |
1920 | ||
1921 | /* Get the current firmware producer index */ | |
1922 | prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; | |
1923 | ||
1924 | return (que->cq_prod_idx != prod_idx); | |
1925 | } | |
1926 | ||
1927 | /* | |
1928 | * Interrupt handler code. | |
1929 | */ | |
1930 | ||
1931 | /* Process completion queue and copy CQE contents for deferred processesing | |
1932 | * | |
1933 | * Return true if we should wake the I/O thread, false if not. | |
1934 | */ | |
1935 | static bool qedf_process_completions(struct qedf_fastpath *fp) | |
1936 | { | |
1937 | struct qedf_ctx *qedf = fp->qedf; | |
1938 | struct qed_sb_info *sb_info = fp->sb_info; | |
21dd79e8 | 1939 | struct status_block_e4 *sb = sb_info->sb_virt; |
61d8658b DC |
1940 | struct global_queue *que; |
1941 | u16 prod_idx; | |
1942 | struct fcoe_cqe *cqe; | |
1943 | struct qedf_io_work *io_work; | |
1944 | int num_handled = 0; | |
1945 | unsigned int cpu; | |
1946 | struct qedf_ioreq *io_req = NULL; | |
1947 | u16 xid; | |
1948 | u16 new_cqes; | |
1949 | u32 comp_type; | |
1950 | ||
1951 | /* Get the current firmware producer index */ | |
1952 | prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; | |
1953 | ||
1954 | /* Get the pointer to the global CQ this completion is on */ | |
1955 | que = qedf->global_queues[fp->sb_id]; | |
1956 | ||
1957 | /* Calculate the amount of new elements since last processing */ | |
1958 | new_cqes = (prod_idx >= que->cq_prod_idx) ? | |
1959 | (prod_idx - que->cq_prod_idx) : | |
1960 | 0x10000 - que->cq_prod_idx + prod_idx; | |
1961 | ||
1962 | /* Save producer index */ | |
1963 | que->cq_prod_idx = prod_idx; | |
1964 | ||
1965 | while (new_cqes) { | |
1966 | fp->completions++; | |
1967 | num_handled++; | |
1968 | cqe = &que->cq[que->cq_cons_idx]; | |
1969 | ||
1970 | comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & | |
1971 | FCOE_CQE_CQE_TYPE_MASK; | |
1972 | ||
1973 | /* | |
1974 | * Process unsolicited CQEs directly in the interrupt handler | |
1975 | * sine we need the fastpath ID | |
1976 | */ | |
1977 | if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { | |
1978 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, | |
1979 | "Unsolicated CQE.\n"); | |
1980 | qedf_process_unsol_compl(qedf, fp->sb_id, cqe); | |
1981 | /* | |
1982 | * Don't add a work list item. Increment consumer | |
1983 | * consumer index and move on. | |
1984 | */ | |
1985 | goto inc_idx; | |
1986 | } | |
1987 | ||
1988 | xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; | |
1989 | io_req = &qedf->cmd_mgr->cmds[xid]; | |
1990 | ||
1991 | /* | |
1992 | * Figure out which percpu thread we should queue this I/O | |
1993 | * on. | |
1994 | */ | |
1995 | if (!io_req) | |
1996 | /* If there is not io_req assocated with this CQE | |
1997 | * just queue it on CPU 0 | |
1998 | */ | |
1999 | cpu = 0; | |
2000 | else { | |
2001 | cpu = io_req->cpu; | |
2002 | io_req->int_cpu = smp_processor_id(); | |
2003 | } | |
2004 | ||
2005 | io_work = mempool_alloc(qedf->io_mempool, GFP_ATOMIC); | |
2006 | if (!io_work) { | |
2007 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " | |
2008 | "work for I/O completion.\n"); | |
2009 | continue; | |
2010 | } | |
2011 | memset(io_work, 0, sizeof(struct qedf_io_work)); | |
2012 | ||
2013 | INIT_WORK(&io_work->work, qedf_fp_io_handler); | |
2014 | ||
2015 | /* Copy contents of CQE for deferred processing */ | |
2016 | memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); | |
2017 | ||
2018 | io_work->qedf = fp->qedf; | |
2019 | io_work->fp = NULL; /* Only used for unsolicited frames */ | |
2020 | ||
2021 | queue_work_on(cpu, qedf_io_wq, &io_work->work); | |
2022 | ||
2023 | inc_idx: | |
2024 | que->cq_cons_idx++; | |
2025 | if (que->cq_cons_idx == fp->cq_num_entries) | |
2026 | que->cq_cons_idx = 0; | |
2027 | new_cqes--; | |
2028 | } | |
2029 | ||
2030 | return true; | |
2031 | } | |
2032 | ||
2033 | ||
2034 | /* MSI-X fastpath handler code */ | |
2035 | static irqreturn_t qedf_msix_handler(int irq, void *dev_id) | |
2036 | { | |
2037 | struct qedf_fastpath *fp = dev_id; | |
2038 | ||
2039 | if (!fp) { | |
2040 | QEDF_ERR(NULL, "fp is null.\n"); | |
2041 | return IRQ_HANDLED; | |
2042 | } | |
2043 | if (!fp->sb_info) { | |
2044 | QEDF_ERR(NULL, "fp->sb_info in null."); | |
2045 | return IRQ_HANDLED; | |
2046 | } | |
2047 | ||
2048 | /* | |
2049 | * Disable interrupts for this status block while we process new | |
2050 | * completions | |
2051 | */ | |
2052 | qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0 /*do not update*/); | |
2053 | ||
2054 | while (1) { | |
2055 | qedf_process_completions(fp); | |
2056 | ||
2057 | if (qedf_fp_has_work(fp) == 0) { | |
2058 | /* Update the sb information */ | |
2059 | qed_sb_update_sb_idx(fp->sb_info); | |
2060 | ||
2061 | /* Check for more work */ | |
2062 | rmb(); | |
2063 | ||
2064 | if (qedf_fp_has_work(fp) == 0) { | |
2065 | /* Re-enable interrupts */ | |
2066 | qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1); | |
2067 | return IRQ_HANDLED; | |
2068 | } | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | /* Do we ever want to break out of above loop? */ | |
2073 | return IRQ_HANDLED; | |
2074 | } | |
2075 | ||
2076 | /* simd handler for MSI/INTa */ | |
2077 | static void qedf_simd_int_handler(void *cookie) | |
2078 | { | |
2079 | /* Cookie is qedf_ctx struct */ | |
2080 | struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; | |
2081 | ||
2082 | QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n", qedf); | |
2083 | } | |
2084 | ||
2085 | #define QEDF_SIMD_HANDLER_NUM 0 | |
2086 | static void qedf_sync_free_irqs(struct qedf_ctx *qedf) | |
2087 | { | |
2088 | int i; | |
2089 | ||
2090 | if (qedf->int_info.msix_cnt) { | |
2091 | for (i = 0; i < qedf->int_info.used_cnt; i++) { | |
2092 | synchronize_irq(qedf->int_info.msix[i].vector); | |
2093 | irq_set_affinity_hint(qedf->int_info.msix[i].vector, | |
2094 | NULL); | |
2095 | irq_set_affinity_notifier(qedf->int_info.msix[i].vector, | |
2096 | NULL); | |
2097 | free_irq(qedf->int_info.msix[i].vector, | |
2098 | &qedf->fp_array[i]); | |
2099 | } | |
2100 | } else | |
2101 | qed_ops->common->simd_handler_clean(qedf->cdev, | |
2102 | QEDF_SIMD_HANDLER_NUM); | |
2103 | ||
2104 | qedf->int_info.used_cnt = 0; | |
2105 | qed_ops->common->set_fp_int(qedf->cdev, 0); | |
2106 | } | |
2107 | ||
2108 | static int qedf_request_msix_irq(struct qedf_ctx *qedf) | |
2109 | { | |
2110 | int i, rc, cpu; | |
2111 | ||
2112 | cpu = cpumask_first(cpu_online_mask); | |
2113 | for (i = 0; i < qedf->num_queues; i++) { | |
2114 | rc = request_irq(qedf->int_info.msix[i].vector, | |
2115 | qedf_msix_handler, 0, "qedf", &qedf->fp_array[i]); | |
2116 | ||
2117 | if (rc) { | |
2118 | QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n"); | |
2119 | qedf_sync_free_irqs(qedf); | |
2120 | return rc; | |
2121 | } | |
2122 | ||
2123 | qedf->int_info.used_cnt++; | |
2124 | rc = irq_set_affinity_hint(qedf->int_info.msix[i].vector, | |
2125 | get_cpu_mask(cpu)); | |
2126 | cpu = cpumask_next(cpu, cpu_online_mask); | |
2127 | } | |
2128 | ||
2129 | return 0; | |
2130 | } | |
2131 | ||
2132 | static int qedf_setup_int(struct qedf_ctx *qedf) | |
2133 | { | |
2134 | int rc = 0; | |
2135 | ||
2136 | /* | |
2137 | * Learn interrupt configuration | |
2138 | */ | |
2139 | rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); | |
914fff10 CD |
2140 | if (rc <= 0) |
2141 | return 0; | |
61d8658b DC |
2142 | |
2143 | rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); | |
2144 | if (rc) | |
2145 | return 0; | |
2146 | ||
2147 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " | |
2148 | "0x%x num of cpus = 0x%x\n", qedf->int_info.msix_cnt, | |
2149 | num_online_cpus()); | |
2150 | ||
2151 | if (qedf->int_info.msix_cnt) | |
2152 | return qedf_request_msix_irq(qedf); | |
2153 | ||
2154 | qed_ops->common->simd_handler_config(qedf->cdev, &qedf, | |
2155 | QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); | |
2156 | qedf->int_info.used_cnt = 1; | |
2157 | ||
96673e1e CD |
2158 | QEDF_ERR(&qedf->dbg_ctx, "Only MSI-X supported. Failing probe.\n"); |
2159 | return -EINVAL; | |
61d8658b DC |
2160 | } |
2161 | ||
2162 | /* Main function for libfc frame reception */ | |
2163 | static void qedf_recv_frame(struct qedf_ctx *qedf, | |
2164 | struct sk_buff *skb) | |
2165 | { | |
2166 | u32 fr_len; | |
2167 | struct fc_lport *lport; | |
2168 | struct fc_frame_header *fh; | |
2169 | struct fcoe_crc_eof crc_eof; | |
2170 | struct fc_frame *fp; | |
2171 | u8 *mac = NULL; | |
2172 | u8 *dest_mac = NULL; | |
2173 | struct fcoe_hdr *hp; | |
2174 | struct qedf_rport *fcport; | |
384d5a9b CD |
2175 | struct fc_lport *vn_port; |
2176 | u32 f_ctl; | |
61d8658b DC |
2177 | |
2178 | lport = qedf->lport; | |
2179 | if (lport == NULL || lport->state == LPORT_ST_DISABLED) { | |
2180 | QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n"); | |
2181 | kfree_skb(skb); | |
2182 | return; | |
2183 | } | |
2184 | ||
2185 | if (skb_is_nonlinear(skb)) | |
2186 | skb_linearize(skb); | |
2187 | mac = eth_hdr(skb)->h_source; | |
2188 | dest_mac = eth_hdr(skb)->h_dest; | |
2189 | ||
2190 | /* Pull the header */ | |
2191 | hp = (struct fcoe_hdr *)skb->data; | |
2192 | fh = (struct fc_frame_header *) skb_transport_header(skb); | |
2193 | skb_pull(skb, sizeof(struct fcoe_hdr)); | |
2194 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); | |
2195 | ||
2196 | fp = (struct fc_frame *)skb; | |
2197 | fc_frame_init(fp); | |
2198 | fr_dev(fp) = lport; | |
2199 | fr_sof(fp) = hp->fcoe_sof; | |
2200 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { | |
2201 | kfree_skb(skb); | |
2202 | return; | |
2203 | } | |
2204 | fr_eof(fp) = crc_eof.fcoe_eof; | |
2205 | fr_crc(fp) = crc_eof.fcoe_crc32; | |
2206 | if (pskb_trim(skb, fr_len)) { | |
2207 | kfree_skb(skb); | |
2208 | return; | |
2209 | } | |
2210 | ||
2211 | fh = fc_frame_header_get(fp); | |
2212 | ||
384d5a9b CD |
2213 | /* |
2214 | * Invalid frame filters. | |
2215 | */ | |
2216 | ||
61d8658b DC |
2217 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && |
2218 | fh->fh_type == FC_TYPE_FCP) { | |
2219 | /* Drop FCP data. We dont this in L2 path */ | |
2220 | kfree_skb(skb); | |
2221 | return; | |
2222 | } | |
2223 | if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && | |
2224 | fh->fh_type == FC_TYPE_ELS) { | |
2225 | switch (fc_frame_payload_op(fp)) { | |
2226 | case ELS_LOGO: | |
2227 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { | |
2228 | /* drop non-FIP LOGO */ | |
2229 | kfree_skb(skb); | |
2230 | return; | |
2231 | } | |
2232 | break; | |
2233 | } | |
2234 | } | |
2235 | ||
2236 | if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { | |
2237 | /* Drop incoming ABTS */ | |
2238 | kfree_skb(skb); | |
2239 | return; | |
2240 | } | |
2241 | ||
384d5a9b | 2242 | if (ntoh24(&dest_mac[3]) != ntoh24(fh->fh_d_id)) { |
f7e8d57b CD |
2243 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
2244 | "FC frame d_id mismatch with MAC %pM.\n", dest_mac); | |
f32803bb | 2245 | kfree_skb(skb); |
384d5a9b CD |
2246 | return; |
2247 | } | |
2248 | ||
2249 | if (qedf->ctlr.state) { | |
2250 | if (!ether_addr_equal(mac, qedf->ctlr.dest_addr)) { | |
f7e8d57b CD |
2251 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
2252 | "Wrong source address: mac:%pM dest_addr:%pM.\n", | |
384d5a9b CD |
2253 | mac, qedf->ctlr.dest_addr); |
2254 | kfree_skb(skb); | |
2255 | return; | |
2256 | } | |
2257 | } | |
2258 | ||
2259 | vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); | |
2260 | ||
2261 | /* | |
2262 | * If the destination ID from the frame header does not match what we | |
2263 | * have on record for lport and the search for a NPIV port came up | |
2264 | * empty then this is not addressed to our port so simply drop it. | |
2265 | */ | |
2266 | if (lport->port_id != ntoh24(fh->fh_d_id) && !vn_port) { | |
f7e8d57b CD |
2267 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
2268 | "Dropping frame due to destination mismatch: lport->port_id=%x fh->d_id=%x.\n", | |
384d5a9b CD |
2269 | lport->port_id, ntoh24(fh->fh_d_id)); |
2270 | kfree_skb(skb); | |
2271 | return; | |
2272 | } | |
2273 | ||
2274 | f_ctl = ntoh24(fh->fh_f_ctl); | |
2275 | if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && | |
2276 | (f_ctl & FC_FC_EX_CTX)) { | |
2277 | /* Drop incoming ABTS response that has both SEQ/EX CTX set */ | |
2278 | kfree_skb(skb); | |
2279 | return; | |
2280 | } | |
2281 | ||
61d8658b DC |
2282 | /* |
2283 | * If a connection is uploading, drop incoming FCoE frames as there | |
2284 | * is a small window where we could try to return a frame while libfc | |
2285 | * is trying to clean things up. | |
2286 | */ | |
2287 | ||
2288 | /* Get fcport associated with d_id if it exists */ | |
2289 | fcport = qedf_fcport_lookup(qedf, ntoh24(fh->fh_d_id)); | |
2290 | ||
2291 | if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, | |
2292 | &fcport->flags)) { | |
2293 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, | |
2294 | "Connection uploading, dropping fp=%p.\n", fp); | |
2295 | kfree_skb(skb); | |
2296 | return; | |
2297 | } | |
2298 | ||
2299 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " | |
2300 | "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n", skb, fp, | |
2301 | ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, | |
2302 | fh->fh_type); | |
2303 | if (qedf_dump_frames) | |
2304 | print_hex_dump(KERN_WARNING, "fcoe: ", DUMP_PREFIX_OFFSET, 16, | |
2305 | 1, skb->data, skb->len, false); | |
2306 | fc_exch_recv(lport, fp); | |
2307 | } | |
2308 | ||
2309 | static void qedf_ll2_process_skb(struct work_struct *work) | |
2310 | { | |
2311 | struct qedf_skb_work *skb_work = | |
2312 | container_of(work, struct qedf_skb_work, work); | |
2313 | struct qedf_ctx *qedf = skb_work->qedf; | |
2314 | struct sk_buff *skb = skb_work->skb; | |
2315 | struct ethhdr *eh; | |
2316 | ||
2317 | if (!qedf) { | |
2318 | QEDF_ERR(NULL, "qedf is NULL\n"); | |
2319 | goto err_out; | |
2320 | } | |
2321 | ||
2322 | eh = (struct ethhdr *)skb->data; | |
2323 | ||
2324 | /* Undo VLAN encapsulation */ | |
2325 | if (eh->h_proto == htons(ETH_P_8021Q)) { | |
2326 | memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); | |
af72868b | 2327 | eh = skb_pull(skb, VLAN_HLEN); |
61d8658b DC |
2328 | skb_reset_mac_header(skb); |
2329 | } | |
2330 | ||
2331 | /* | |
2332 | * Process either a FIP frame or FCoE frame based on the | |
2333 | * protocol value. If it's not either just drop the | |
2334 | * frame. | |
2335 | */ | |
2336 | if (eh->h_proto == htons(ETH_P_FIP)) { | |
2337 | qedf_fip_recv(qedf, skb); | |
2338 | goto out; | |
2339 | } else if (eh->h_proto == htons(ETH_P_FCOE)) { | |
2340 | __skb_pull(skb, ETH_HLEN); | |
2341 | qedf_recv_frame(qedf, skb); | |
2342 | goto out; | |
2343 | } else | |
2344 | goto err_out; | |
2345 | ||
2346 | err_out: | |
2347 | kfree_skb(skb); | |
2348 | out: | |
2349 | kfree(skb_work); | |
2350 | return; | |
2351 | } | |
2352 | ||
2353 | static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, | |
2354 | u32 arg1, u32 arg2) | |
2355 | { | |
2356 | struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; | |
2357 | struct qedf_skb_work *skb_work; | |
2358 | ||
2359 | skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); | |
2360 | if (!skb_work) { | |
2361 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " | |
2362 | "dropping frame.\n"); | |
2363 | kfree_skb(skb); | |
2364 | return 0; | |
2365 | } | |
2366 | ||
2367 | INIT_WORK(&skb_work->work, qedf_ll2_process_skb); | |
2368 | skb_work->skb = skb; | |
2369 | skb_work->qedf = qedf; | |
2370 | queue_work(qedf->ll2_recv_wq, &skb_work->work); | |
2371 | ||
2372 | return 0; | |
2373 | } | |
2374 | ||
2375 | static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { | |
2376 | .rx_cb = qedf_ll2_rx, | |
2377 | .tx_cb = NULL, | |
2378 | }; | |
2379 | ||
2380 | /* Main thread to process I/O completions */ | |
2381 | void qedf_fp_io_handler(struct work_struct *work) | |
2382 | { | |
2383 | struct qedf_io_work *io_work = | |
2384 | container_of(work, struct qedf_io_work, work); | |
2385 | u32 comp_type; | |
2386 | ||
2387 | /* | |
2388 | * Deferred part of unsolicited CQE sends | |
2389 | * frame to libfc. | |
2390 | */ | |
2391 | comp_type = (io_work->cqe.cqe_data >> | |
2392 | FCOE_CQE_CQE_TYPE_SHIFT) & | |
2393 | FCOE_CQE_CQE_TYPE_MASK; | |
2394 | if (comp_type == FCOE_UNSOLIC_CQE_TYPE && | |
2395 | io_work->fp) | |
2396 | fc_exch_recv(io_work->qedf->lport, io_work->fp); | |
2397 | else | |
2398 | qedf_process_cqe(io_work->qedf, &io_work->cqe); | |
2399 | ||
2400 | kfree(io_work); | |
2401 | } | |
2402 | ||
2403 | static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, | |
2404 | struct qed_sb_info *sb_info, u16 sb_id) | |
2405 | { | |
21dd79e8 | 2406 | struct status_block_e4 *sb_virt; |
61d8658b DC |
2407 | dma_addr_t sb_phys; |
2408 | int ret; | |
2409 | ||
2410 | sb_virt = dma_alloc_coherent(&qedf->pdev->dev, | |
21dd79e8 | 2411 | sizeof(struct status_block_e4), &sb_phys, GFP_KERNEL); |
61d8658b DC |
2412 | |
2413 | if (!sb_virt) { | |
2414 | QEDF_ERR(&(qedf->dbg_ctx), "Status block allocation failed " | |
2415 | "for id = %d.\n", sb_id); | |
2416 | return -ENOMEM; | |
2417 | } | |
2418 | ||
2419 | ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, | |
2420 | sb_id, QED_SB_TYPE_STORAGE); | |
2421 | ||
2422 | if (ret) { | |
2423 | QEDF_ERR(&(qedf->dbg_ctx), "Status block initialization " | |
2424 | "failed for id = %d.\n", sb_id); | |
2425 | return ret; | |
2426 | } | |
2427 | ||
2428 | return 0; | |
2429 | } | |
2430 | ||
2431 | static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) | |
2432 | { | |
2433 | if (sb_info->sb_virt) | |
2434 | dma_free_coherent(&qedf->pdev->dev, sizeof(*sb_info->sb_virt), | |
2435 | (void *)sb_info->sb_virt, sb_info->sb_phys); | |
2436 | } | |
2437 | ||
2438 | static void qedf_destroy_sb(struct qedf_ctx *qedf) | |
2439 | { | |
2440 | int id; | |
2441 | struct qedf_fastpath *fp = NULL; | |
2442 | ||
2443 | for (id = 0; id < qedf->num_queues; id++) { | |
2444 | fp = &(qedf->fp_array[id]); | |
2445 | if (fp->sb_id == QEDF_SB_ID_NULL) | |
2446 | break; | |
2447 | qedf_free_sb(qedf, fp->sb_info); | |
2448 | kfree(fp->sb_info); | |
2449 | } | |
2450 | kfree(qedf->fp_array); | |
2451 | } | |
2452 | ||
2453 | static int qedf_prepare_sb(struct qedf_ctx *qedf) | |
2454 | { | |
2455 | int id; | |
2456 | struct qedf_fastpath *fp; | |
2457 | int ret; | |
2458 | ||
2459 | qedf->fp_array = | |
2460 | kcalloc(qedf->num_queues, sizeof(struct qedf_fastpath), | |
2461 | GFP_KERNEL); | |
2462 | ||
2463 | if (!qedf->fp_array) { | |
2464 | QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " | |
2465 | "failed.\n"); | |
2466 | return -ENOMEM; | |
2467 | } | |
2468 | ||
2469 | for (id = 0; id < qedf->num_queues; id++) { | |
2470 | fp = &(qedf->fp_array[id]); | |
2471 | fp->sb_id = QEDF_SB_ID_NULL; | |
2472 | fp->sb_info = kcalloc(1, sizeof(*fp->sb_info), GFP_KERNEL); | |
2473 | if (!fp->sb_info) { | |
2474 | QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " | |
2475 | "allocation failed.\n"); | |
2476 | goto err; | |
2477 | } | |
2478 | ret = qedf_alloc_and_init_sb(qedf, fp->sb_info, id); | |
2479 | if (ret) { | |
2480 | QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " | |
2481 | "initialization failed.\n"); | |
2482 | goto err; | |
2483 | } | |
2484 | fp->sb_id = id; | |
2485 | fp->qedf = qedf; | |
2486 | fp->cq_num_entries = | |
2487 | qedf->global_queues[id]->cq_mem_size / | |
2488 | sizeof(struct fcoe_cqe); | |
2489 | } | |
2490 | err: | |
2491 | return 0; | |
2492 | } | |
2493 | ||
2494 | void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) | |
2495 | { | |
2496 | u16 xid; | |
2497 | struct qedf_ioreq *io_req; | |
2498 | struct qedf_rport *fcport; | |
2499 | u32 comp_type; | |
2500 | ||
2501 | comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & | |
2502 | FCOE_CQE_CQE_TYPE_MASK; | |
2503 | ||
2504 | xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; | |
2505 | io_req = &qedf->cmd_mgr->cmds[xid]; | |
2506 | ||
2507 | /* Completion not for a valid I/O anymore so just return */ | |
2508 | if (!io_req) | |
2509 | return; | |
2510 | ||
2511 | fcport = io_req->fcport; | |
2512 | ||
2513 | if (fcport == NULL) { | |
2514 | QEDF_ERR(&(qedf->dbg_ctx), "fcport is NULL.\n"); | |
2515 | return; | |
2516 | } | |
2517 | ||
2518 | /* | |
2519 | * Check that fcport is offloaded. If it isn't then the spinlock | |
2520 | * isn't valid and shouldn't be taken. We should just return. | |
2521 | */ | |
2522 | if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { | |
2523 | QEDF_ERR(&(qedf->dbg_ctx), "Session not offloaded yet.\n"); | |
2524 | return; | |
2525 | } | |
2526 | ||
2527 | ||
2528 | switch (comp_type) { | |
2529 | case FCOE_GOOD_COMPLETION_CQE_TYPE: | |
2530 | atomic_inc(&fcport->free_sqes); | |
2531 | switch (io_req->cmd_type) { | |
2532 | case QEDF_SCSI_CMD: | |
2533 | qedf_scsi_completion(qedf, cqe, io_req); | |
2534 | break; | |
2535 | case QEDF_ELS: | |
2536 | qedf_process_els_compl(qedf, cqe, io_req); | |
2537 | break; | |
2538 | case QEDF_TASK_MGMT_CMD: | |
2539 | qedf_process_tmf_compl(qedf, cqe, io_req); | |
2540 | break; | |
2541 | case QEDF_SEQ_CLEANUP: | |
2542 | qedf_process_seq_cleanup_compl(qedf, cqe, io_req); | |
2543 | break; | |
2544 | } | |
2545 | break; | |
2546 | case FCOE_ERROR_DETECTION_CQE_TYPE: | |
2547 | atomic_inc(&fcport->free_sqes); | |
2548 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2549 | "Error detect CQE.\n"); | |
2550 | qedf_process_error_detect(qedf, cqe, io_req); | |
2551 | break; | |
2552 | case FCOE_EXCH_CLEANUP_CQE_TYPE: | |
2553 | atomic_inc(&fcport->free_sqes); | |
2554 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2555 | "Cleanup CQE.\n"); | |
2556 | qedf_process_cleanup_compl(qedf, cqe, io_req); | |
2557 | break; | |
2558 | case FCOE_ABTS_CQE_TYPE: | |
2559 | atomic_inc(&fcport->free_sqes); | |
2560 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2561 | "Abort CQE.\n"); | |
2562 | qedf_process_abts_compl(qedf, cqe, io_req); | |
2563 | break; | |
2564 | case FCOE_DUMMY_CQE_TYPE: | |
2565 | atomic_inc(&fcport->free_sqes); | |
2566 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2567 | "Dummy CQE.\n"); | |
2568 | break; | |
2569 | case FCOE_LOCAL_COMP_CQE_TYPE: | |
2570 | atomic_inc(&fcport->free_sqes); | |
2571 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2572 | "Local completion CQE.\n"); | |
2573 | break; | |
2574 | case FCOE_WARNING_CQE_TYPE: | |
2575 | atomic_inc(&fcport->free_sqes); | |
2576 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2577 | "Warning CQE.\n"); | |
2578 | qedf_process_warning_compl(qedf, cqe, io_req); | |
2579 | break; | |
2580 | case MAX_FCOE_CQE_TYPE: | |
2581 | atomic_inc(&fcport->free_sqes); | |
2582 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2583 | "Max FCoE CQE.\n"); | |
2584 | break; | |
2585 | default: | |
2586 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, | |
2587 | "Default CQE.\n"); | |
2588 | break; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | static void qedf_free_bdq(struct qedf_ctx *qedf) | |
2593 | { | |
2594 | int i; | |
2595 | ||
2596 | if (qedf->bdq_pbl_list) | |
2597 | dma_free_coherent(&qedf->pdev->dev, QEDF_PAGE_SIZE, | |
2598 | qedf->bdq_pbl_list, qedf->bdq_pbl_list_dma); | |
2599 | ||
2600 | if (qedf->bdq_pbl) | |
2601 | dma_free_coherent(&qedf->pdev->dev, qedf->bdq_pbl_mem_size, | |
2602 | qedf->bdq_pbl, qedf->bdq_pbl_dma); | |
2603 | ||
2604 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { | |
2605 | if (qedf->bdq[i].buf_addr) { | |
2606 | dma_free_coherent(&qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, | |
2607 | qedf->bdq[i].buf_addr, qedf->bdq[i].buf_dma); | |
2608 | } | |
2609 | } | |
2610 | } | |
2611 | ||
2612 | static void qedf_free_global_queues(struct qedf_ctx *qedf) | |
2613 | { | |
2614 | int i; | |
2615 | struct global_queue **gl = qedf->global_queues; | |
2616 | ||
2617 | for (i = 0; i < qedf->num_queues; i++) { | |
2618 | if (!gl[i]) | |
2619 | continue; | |
2620 | ||
2621 | if (gl[i]->cq) | |
2622 | dma_free_coherent(&qedf->pdev->dev, | |
2623 | gl[i]->cq_mem_size, gl[i]->cq, gl[i]->cq_dma); | |
2624 | if (gl[i]->cq_pbl) | |
2625 | dma_free_coherent(&qedf->pdev->dev, gl[i]->cq_pbl_size, | |
2626 | gl[i]->cq_pbl, gl[i]->cq_pbl_dma); | |
2627 | ||
2628 | kfree(gl[i]); | |
2629 | } | |
2630 | ||
2631 | qedf_free_bdq(qedf); | |
2632 | } | |
2633 | ||
2634 | static int qedf_alloc_bdq(struct qedf_ctx *qedf) | |
2635 | { | |
2636 | int i; | |
2637 | struct scsi_bd *pbl; | |
2638 | u64 *list; | |
2639 | dma_addr_t page; | |
2640 | ||
2641 | /* Alloc dma memory for BDQ buffers */ | |
2642 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { | |
2643 | qedf->bdq[i].buf_addr = dma_alloc_coherent(&qedf->pdev->dev, | |
2644 | QEDF_BDQ_BUF_SIZE, &qedf->bdq[i].buf_dma, GFP_KERNEL); | |
2645 | if (!qedf->bdq[i].buf_addr) { | |
2646 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " | |
2647 | "buffer %d.\n", i); | |
2648 | return -ENOMEM; | |
2649 | } | |
2650 | } | |
2651 | ||
2652 | /* Alloc dma memory for BDQ page buffer list */ | |
2653 | qedf->bdq_pbl_mem_size = | |
2654 | QEDF_BDQ_SIZE * sizeof(struct scsi_bd); | |
2655 | qedf->bdq_pbl_mem_size = | |
2656 | ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); | |
2657 | ||
2658 | qedf->bdq_pbl = dma_alloc_coherent(&qedf->pdev->dev, | |
2659 | qedf->bdq_pbl_mem_size, &qedf->bdq_pbl_dma, GFP_KERNEL); | |
2660 | if (!qedf->bdq_pbl) { | |
2661 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n"); | |
2662 | return -ENOMEM; | |
2663 | } | |
2664 | ||
2665 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
fd2b18b4 JP |
2666 | "BDQ PBL addr=0x%p dma=%pad\n", |
2667 | qedf->bdq_pbl, &qedf->bdq_pbl_dma); | |
61d8658b DC |
2668 | |
2669 | /* | |
2670 | * Populate BDQ PBL with physical and virtual address of individual | |
2671 | * BDQ buffers | |
2672 | */ | |
2673 | pbl = (struct scsi_bd *)qedf->bdq_pbl; | |
2674 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { | |
2675 | pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); | |
2676 | pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); | |
da090917 | 2677 | pbl->opaque.fcoe_opaque.hi = 0; |
61d8658b | 2678 | /* Opaque lo data is an index into the BDQ array */ |
da090917 | 2679 | pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); |
61d8658b DC |
2680 | pbl++; |
2681 | } | |
2682 | ||
2683 | /* Allocate list of PBL pages */ | |
750afb08 LC |
2684 | qedf->bdq_pbl_list = dma_alloc_coherent(&qedf->pdev->dev, |
2685 | QEDF_PAGE_SIZE, | |
2686 | &qedf->bdq_pbl_list_dma, | |
2687 | GFP_KERNEL); | |
61d8658b | 2688 | if (!qedf->bdq_pbl_list) { |
32eebb31 | 2689 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n"); |
61d8658b DC |
2690 | return -ENOMEM; |
2691 | } | |
61d8658b DC |
2692 | |
2693 | /* | |
2694 | * Now populate PBL list with pages that contain pointers to the | |
2695 | * individual buffers. | |
2696 | */ | |
2697 | qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / | |
2698 | QEDF_PAGE_SIZE; | |
2699 | list = (u64 *)qedf->bdq_pbl_list; | |
2700 | page = qedf->bdq_pbl_list_dma; | |
2701 | for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { | |
2702 | *list = qedf->bdq_pbl_dma; | |
2703 | list++; | |
2704 | page += QEDF_PAGE_SIZE; | |
2705 | } | |
2706 | ||
2707 | return 0; | |
2708 | } | |
2709 | ||
2710 | static int qedf_alloc_global_queues(struct qedf_ctx *qedf) | |
2711 | { | |
2712 | u32 *list; | |
2713 | int i; | |
2714 | int status = 0, rc; | |
2715 | u32 *pbl; | |
2716 | dma_addr_t page; | |
2717 | int num_pages; | |
2718 | ||
2719 | /* Allocate and map CQs, RQs */ | |
2720 | /* | |
2721 | * Number of global queues (CQ / RQ). This should | |
2722 | * be <= number of available MSIX vectors for the PF | |
2723 | */ | |
2724 | if (!qedf->num_queues) { | |
2725 | QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n"); | |
2726 | return 1; | |
2727 | } | |
2728 | ||
2729 | /* | |
2730 | * Make sure we allocated the PBL that will contain the physical | |
2731 | * addresses of our queues | |
2732 | */ | |
2733 | if (!qedf->p_cpuq) { | |
2734 | status = 1; | |
2735 | goto mem_alloc_failure; | |
2736 | } | |
2737 | ||
2738 | qedf->global_queues = kzalloc((sizeof(struct global_queue *) | |
2739 | * qedf->num_queues), GFP_KERNEL); | |
2740 | if (!qedf->global_queues) { | |
2741 | QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " | |
2742 | "queues array ptr memory\n"); | |
2743 | return -ENOMEM; | |
2744 | } | |
2745 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2746 | "qedf->global_queues=%p.\n", qedf->global_queues); | |
2747 | ||
2748 | /* Allocate DMA coherent buffers for BDQ */ | |
2749 | rc = qedf_alloc_bdq(qedf); | |
2750 | if (rc) | |
2751 | goto mem_alloc_failure; | |
2752 | ||
2753 | /* Allocate a CQ and an associated PBL for each MSI-X vector */ | |
2754 | for (i = 0; i < qedf->num_queues; i++) { | |
2755 | qedf->global_queues[i] = kzalloc(sizeof(struct global_queue), | |
2756 | GFP_KERNEL); | |
2757 | if (!qedf->global_queues[i]) { | |
3a240b21 | 2758 | QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " |
61d8658b | 2759 | "global queue %d.\n", i); |
3a240b21 | 2760 | status = -ENOMEM; |
61d8658b DC |
2761 | goto mem_alloc_failure; |
2762 | } | |
2763 | ||
2764 | qedf->global_queues[i]->cq_mem_size = | |
2765 | FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); | |
2766 | qedf->global_queues[i]->cq_mem_size = | |
2767 | ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); | |
2768 | ||
2769 | qedf->global_queues[i]->cq_pbl_size = | |
2770 | (qedf->global_queues[i]->cq_mem_size / | |
2771 | PAGE_SIZE) * sizeof(void *); | |
2772 | qedf->global_queues[i]->cq_pbl_size = | |
2773 | ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); | |
2774 | ||
2775 | qedf->global_queues[i]->cq = | |
750afb08 LC |
2776 | dma_alloc_coherent(&qedf->pdev->dev, |
2777 | qedf->global_queues[i]->cq_mem_size, | |
2778 | &qedf->global_queues[i]->cq_dma, | |
2779 | GFP_KERNEL); | |
61d8658b DC |
2780 | |
2781 | if (!qedf->global_queues[i]->cq) { | |
32eebb31 | 2782 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n"); |
61d8658b DC |
2783 | status = -ENOMEM; |
2784 | goto mem_alloc_failure; | |
2785 | } | |
61d8658b DC |
2786 | |
2787 | qedf->global_queues[i]->cq_pbl = | |
750afb08 LC |
2788 | dma_alloc_coherent(&qedf->pdev->dev, |
2789 | qedf->global_queues[i]->cq_pbl_size, | |
2790 | &qedf->global_queues[i]->cq_pbl_dma, | |
2791 | GFP_KERNEL); | |
61d8658b DC |
2792 | |
2793 | if (!qedf->global_queues[i]->cq_pbl) { | |
32eebb31 | 2794 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n"); |
61d8658b DC |
2795 | status = -ENOMEM; |
2796 | goto mem_alloc_failure; | |
2797 | } | |
61d8658b DC |
2798 | |
2799 | /* Create PBL */ | |
2800 | num_pages = qedf->global_queues[i]->cq_mem_size / | |
2801 | QEDF_PAGE_SIZE; | |
2802 | page = qedf->global_queues[i]->cq_dma; | |
2803 | pbl = (u32 *)qedf->global_queues[i]->cq_pbl; | |
2804 | ||
2805 | while (num_pages--) { | |
2806 | *pbl = U64_LO(page); | |
2807 | pbl++; | |
2808 | *pbl = U64_HI(page); | |
2809 | pbl++; | |
2810 | page += QEDF_PAGE_SIZE; | |
2811 | } | |
2812 | /* Set the initial consumer index for cq */ | |
2813 | qedf->global_queues[i]->cq_cons_idx = 0; | |
2814 | } | |
2815 | ||
2816 | list = (u32 *)qedf->p_cpuq; | |
2817 | ||
2818 | /* | |
2819 | * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, | |
2820 | * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points | |
2821 | * to the physical address which contains an array of pointers to | |
2822 | * the physical addresses of the specific queue pages. | |
2823 | */ | |
2824 | for (i = 0; i < qedf->num_queues; i++) { | |
2825 | *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); | |
2826 | list++; | |
2827 | *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); | |
2828 | list++; | |
2829 | *list = U64_LO(0); | |
2830 | list++; | |
2831 | *list = U64_HI(0); | |
2832 | list++; | |
2833 | } | |
2834 | ||
2835 | return 0; | |
2836 | ||
2837 | mem_alloc_failure: | |
2838 | qedf_free_global_queues(qedf); | |
2839 | return status; | |
2840 | } | |
2841 | ||
2842 | static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) | |
2843 | { | |
2844 | u8 sq_num_pbl_pages; | |
2845 | u32 sq_mem_size; | |
2846 | u32 cq_mem_size; | |
2847 | u32 cq_num_entries; | |
2848 | int rval; | |
2849 | ||
2850 | /* | |
2851 | * The number of completion queues/fastpath interrupts/status blocks | |
2852 | * we allocation is the minimum off: | |
2853 | * | |
2854 | * Number of CPUs | |
722477c4 | 2855 | * Number allocated by qed for our PCI function |
61d8658b | 2856 | */ |
722477c4 | 2857 | qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); |
61d8658b DC |
2858 | |
2859 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n", | |
2860 | qedf->num_queues); | |
2861 | ||
332d84f7 | 2862 | qedf->p_cpuq = dma_alloc_coherent(&qedf->pdev->dev, |
61d8658b | 2863 | qedf->num_queues * sizeof(struct qedf_glbl_q_params), |
332d84f7 | 2864 | &qedf->hw_p_cpuq, GFP_KERNEL); |
61d8658b DC |
2865 | |
2866 | if (!qedf->p_cpuq) { | |
332d84f7 | 2867 | QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n"); |
61d8658b DC |
2868 | return 1; |
2869 | } | |
2870 | ||
2871 | rval = qedf_alloc_global_queues(qedf); | |
2872 | if (rval) { | |
2873 | QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " | |
2874 | "failed.\n"); | |
2875 | return 1; | |
2876 | } | |
2877 | ||
2878 | /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ | |
2879 | sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); | |
2880 | sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); | |
2881 | sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); | |
2882 | ||
2883 | /* Calculate CQ num entries */ | |
2884 | cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); | |
2885 | cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); | |
2886 | cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); | |
2887 | ||
32eebb31 | 2888 | memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); |
61d8658b DC |
2889 | |
2890 | /* Setup the value for fcoe PF */ | |
2891 | qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; | |
2892 | qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; | |
2893 | qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = | |
2894 | (u64)qedf->hw_p_cpuq; | |
2895 | qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; | |
2896 | ||
2897 | qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; | |
2898 | ||
2899 | qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; | |
2900 | qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; | |
2901 | ||
2902 | /* log_page_size: 12 for 4KB pages */ | |
2903 | qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); | |
2904 | ||
2905 | qedf->pf_params.fcoe_pf_params.mtu = 9000; | |
2906 | qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; | |
2907 | qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; | |
2908 | ||
2909 | /* BDQ address and size */ | |
2910 | qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = | |
2911 | qedf->bdq_pbl_list_dma; | |
2912 | qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = | |
2913 | qedf->bdq_pbl_list_num_entries; | |
2914 | qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; | |
2915 | ||
2916 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2917 | "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n", | |
2918 | qedf->bdq_pbl_list, | |
2919 | qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], | |
2920 | qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); | |
2921 | ||
2922 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
2923 | "cq_num_entries=%d.\n", | |
2924 | qedf->pf_params.fcoe_pf_params.cq_num_entries); | |
2925 | ||
2926 | return 0; | |
2927 | } | |
2928 | ||
2929 | /* Free DMA coherent memory for array of queue pointers we pass to qed */ | |
2930 | static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) | |
2931 | { | |
2932 | size_t size = 0; | |
2933 | ||
2934 | if (qedf->p_cpuq) { | |
2935 | size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); | |
332d84f7 | 2936 | dma_free_coherent(&qedf->pdev->dev, size, qedf->p_cpuq, |
61d8658b DC |
2937 | qedf->hw_p_cpuq); |
2938 | } | |
2939 | ||
2940 | qedf_free_global_queues(qedf); | |
2941 | ||
f3e46ac4 | 2942 | kfree(qedf->global_queues); |
61d8658b DC |
2943 | } |
2944 | ||
2945 | /* | |
2946 | * PCI driver functions | |
2947 | */ | |
2948 | ||
2949 | static const struct pci_device_id qedf_pci_tbl[] = { | |
2950 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, | |
2951 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, | |
2952 | {0} | |
2953 | }; | |
2954 | MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); | |
2955 | ||
2956 | static struct pci_driver qedf_pci_driver = { | |
2957 | .name = QEDF_MODULE_NAME, | |
2958 | .id_table = qedf_pci_tbl, | |
2959 | .probe = qedf_probe, | |
2960 | .remove = qedf_remove, | |
2961 | }; | |
2962 | ||
2963 | static int __qedf_probe(struct pci_dev *pdev, int mode) | |
2964 | { | |
2965 | int rc = -EINVAL; | |
2966 | struct fc_lport *lport; | |
2967 | struct qedf_ctx *qedf; | |
2968 | struct Scsi_Host *host; | |
2969 | bool is_vf = false; | |
2970 | struct qed_ll2_params params; | |
2971 | char host_buf[20]; | |
2972 | struct qed_link_params link_params; | |
2973 | int status; | |
2974 | void *task_start, *task_end; | |
2975 | struct qed_slowpath_params slowpath_params; | |
2976 | struct qed_probe_params qed_params; | |
2977 | u16 tmp; | |
2978 | ||
2979 | /* | |
2980 | * When doing error recovery we didn't reap the lport so don't try | |
2981 | * to reallocate it. | |
2982 | */ | |
2983 | if (mode != QEDF_MODE_RECOVERY) { | |
2984 | lport = libfc_host_alloc(&qedf_host_template, | |
2985 | sizeof(struct qedf_ctx)); | |
2986 | ||
2987 | if (!lport) { | |
2988 | QEDF_ERR(NULL, "Could not allocate lport.\n"); | |
2989 | rc = -ENOMEM; | |
2990 | goto err0; | |
2991 | } | |
2992 | ||
2993 | /* Initialize qedf_ctx */ | |
2994 | qedf = lport_priv(lport); | |
2995 | qedf->lport = lport; | |
2996 | qedf->ctlr.lp = lport; | |
2997 | qedf->pdev = pdev; | |
2998 | qedf->dbg_ctx.pdev = pdev; | |
2999 | qedf->dbg_ctx.host_no = lport->host->host_no; | |
3000 | spin_lock_init(&qedf->hba_lock); | |
3001 | INIT_LIST_HEAD(&qedf->fcports); | |
3002 | qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; | |
3003 | atomic_set(&qedf->num_offloads, 0); | |
3004 | qedf->stop_io_on_error = false; | |
3005 | pci_set_drvdata(pdev, qedf); | |
8eaf7dfc | 3006 | init_completion(&qedf->fipvlan_compl); |
642a0b37 | 3007 | mutex_init(&qedf->stats_mutex); |
61d8658b DC |
3008 | |
3009 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, | |
3010 | "QLogic FastLinQ FCoE Module qedf %s, " | |
3011 | "FW %d.%d.%d.%d\n", QEDF_VERSION, | |
3012 | FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, | |
3013 | FW_ENGINEERING_VERSION); | |
3014 | } else { | |
3015 | /* Init pointers during recovery */ | |
3016 | qedf = pci_get_drvdata(pdev); | |
3017 | lport = qedf->lport; | |
3018 | } | |
3019 | ||
3020 | host = lport->host; | |
3021 | ||
3022 | /* Allocate mempool for qedf_io_work structs */ | |
3023 | qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, | |
3024 | qedf_io_work_cache); | |
3025 | if (qedf->io_mempool == NULL) { | |
3026 | QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n"); | |
3027 | goto err1; | |
3028 | } | |
3029 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n", | |
3030 | qedf->io_mempool); | |
3031 | ||
3032 | sprintf(host_buf, "qedf_%u_link", | |
3033 | qedf->lport->host->host_no); | |
428ca642 | 3034 | qedf->link_update_wq = create_workqueue(host_buf); |
61d8658b DC |
3035 | INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); |
3036 | INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); | |
4b9b7fab | 3037 | INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); |
61d8658b | 3038 | qedf->fipvlan_retries = qedf_fipvlan_retries; |
84b2ba6e | 3039 | /* Set a default prio in case DCBX doesn't converge */ |
65b7beca CD |
3040 | if (qedf_default_prio > -1) { |
3041 | /* | |
3042 | * This is the case where we pass a modparam in so we want to | |
3043 | * honor it even if dcbx doesn't converge. | |
3044 | */ | |
3045 | qedf->prio = qedf_default_prio; | |
3046 | } else | |
3047 | qedf->prio = QEDF_DEFAULT_PRIO; | |
61d8658b DC |
3048 | |
3049 | /* | |
3050 | * Common probe. Takes care of basic hardware init and pci_* | |
3051 | * functions. | |
3052 | */ | |
3053 | memset(&qed_params, 0, sizeof(qed_params)); | |
3054 | qed_params.protocol = QED_PROTOCOL_FCOE; | |
3055 | qed_params.dp_module = qedf_dp_module; | |
3056 | qed_params.dp_level = qedf_dp_level; | |
3057 | qed_params.is_vf = is_vf; | |
3058 | qedf->cdev = qed_ops->common->probe(pdev, &qed_params); | |
3059 | if (!qedf->cdev) { | |
3060 | rc = -ENODEV; | |
3061 | goto err1; | |
3062 | } | |
3063 | ||
722477c4 TB |
3064 | /* Learn information crucial for qedf to progress */ |
3065 | rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); | |
3066 | if (rc) { | |
3067 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n"); | |
3068 | goto err1; | |
3069 | } | |
3070 | ||
61d8658b DC |
3071 | /* queue allocation code should come here |
3072 | * order should be | |
3073 | * slowpath_start | |
3074 | * status block allocation | |
3075 | * interrupt registration (to get min number of queues) | |
3076 | * set_fcoe_pf_param | |
3077 | * qed_sp_fcoe_func_start | |
3078 | */ | |
3079 | rc = qedf_set_fcoe_pf_param(qedf); | |
3080 | if (rc) { | |
3081 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n"); | |
3082 | goto err2; | |
3083 | } | |
3084 | qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); | |
3085 | ||
61d8658b DC |
3086 | /* Record BDQ producer doorbell addresses */ |
3087 | qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; | |
3088 | qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; | |
3089 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
3090 | "BDQ primary_prod=%p secondary_prod=%p.\n", qedf->bdq_primary_prod, | |
3091 | qedf->bdq_secondary_prod); | |
3092 | ||
3093 | qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); | |
3094 | ||
3095 | rc = qedf_prepare_sb(qedf); | |
3096 | if (rc) { | |
3097 | ||
3098 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); | |
3099 | goto err2; | |
3100 | } | |
3101 | ||
3102 | /* Start the Slowpath-process */ | |
3103 | slowpath_params.int_mode = QED_INT_MODE_MSIX; | |
3104 | slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; | |
3105 | slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; | |
3106 | slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; | |
3107 | slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; | |
cd22874f | 3108 | strncpy(slowpath_params.name, "qedf", QED_DRV_VER_STR_SIZE); |
61d8658b DC |
3109 | rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); |
3110 | if (rc) { | |
3111 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n"); | |
3112 | goto err2; | |
3113 | } | |
3114 | ||
3115 | /* | |
3116 | * update_pf_params needs to be called before and after slowpath | |
3117 | * start | |
3118 | */ | |
3119 | qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); | |
3120 | ||
3121 | /* Setup interrupts */ | |
3122 | rc = qedf_setup_int(qedf); | |
3123 | if (rc) | |
3124 | goto err3; | |
3125 | ||
3126 | rc = qed_ops->start(qedf->cdev, &qedf->tasks); | |
3127 | if (rc) { | |
3128 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n"); | |
3129 | goto err4; | |
3130 | } | |
3131 | task_start = qedf_get_task_mem(&qedf->tasks, 0); | |
3132 | task_end = qedf_get_task_mem(&qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); | |
3133 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " | |
3134 | "end=%p block_size=%u.\n", task_start, task_end, | |
3135 | qedf->tasks.size); | |
3136 | ||
3137 | /* | |
3138 | * We need to write the number of BDs in the BDQ we've preallocated so | |
3139 | * the f/w will do a prefetch and we'll get an unsolicited CQE when a | |
3140 | * packet arrives. | |
3141 | */ | |
3142 | qedf->bdq_prod_idx = QEDF_BDQ_SIZE; | |
3143 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
3144 | "Writing %d to primary and secondary BDQ doorbell registers.\n", | |
3145 | qedf->bdq_prod_idx); | |
3146 | writew(qedf->bdq_prod_idx, qedf->bdq_primary_prod); | |
3147 | tmp = readw(qedf->bdq_primary_prod); | |
3148 | writew(qedf->bdq_prod_idx, qedf->bdq_secondary_prod); | |
3149 | tmp = readw(qedf->bdq_secondary_prod); | |
3150 | ||
3151 | qed_ops->common->set_power_state(qedf->cdev, PCI_D0); | |
3152 | ||
3153 | /* Now that the dev_info struct has been filled in set the MAC | |
3154 | * address | |
3155 | */ | |
3156 | ether_addr_copy(qedf->mac, qedf->dev_info.common.hw_mac); | |
3157 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n", | |
3158 | qedf->mac); | |
3159 | ||
01fd76a7 CD |
3160 | /* |
3161 | * Set the WWNN and WWPN in the following way: | |
3162 | * | |
3163 | * If the info we get from qed is non-zero then use that to set the | |
3164 | * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based | |
3165 | * on the MAC address. | |
3166 | */ | |
3167 | if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { | |
3168 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
3169 | "Setting WWPN and WWNN from qed dev_info.\n"); | |
3170 | qedf->wwnn = qedf->dev_info.wwnn; | |
3171 | qedf->wwpn = qedf->dev_info.wwpn; | |
3172 | } else { | |
3173 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
3174 | "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n"); | |
3175 | qedf->wwnn = fcoe_wwn_from_mac(qedf->mac, 1, 0); | |
3176 | qedf->wwpn = fcoe_wwn_from_mac(qedf->mac, 2, 0); | |
3177 | } | |
61d8658b DC |
3178 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " |
3179 | "WWPN=%016llx.\n", qedf->wwnn, qedf->wwpn); | |
3180 | ||
3181 | sprintf(host_buf, "host_%d", host->host_no); | |
712c3cbf | 3182 | qed_ops->common->set_name(qedf->cdev, host_buf); |
61d8658b DC |
3183 | |
3184 | ||
3185 | /* Set xid max values */ | |
3186 | qedf->max_scsi_xid = QEDF_MAX_SCSI_XID; | |
3187 | qedf->max_els_xid = QEDF_MAX_ELS_XID; | |
3188 | ||
3189 | /* Allocate cmd mgr */ | |
3190 | qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); | |
3191 | if (!qedf->cmd_mgr) { | |
3192 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n"); | |
e89cabf2 | 3193 | rc = -ENOMEM; |
61d8658b DC |
3194 | goto err5; |
3195 | } | |
3196 | ||
3197 | if (mode != QEDF_MODE_RECOVERY) { | |
3198 | host->transportt = qedf_fc_transport_template; | |
3199 | host->can_queue = QEDF_MAX_ELS_XID; | |
3200 | host->max_lun = qedf_max_lun; | |
3201 | host->max_cmd_len = QEDF_MAX_CDB_LEN; | |
3202 | rc = scsi_add_host(host, &pdev->dev); | |
3203 | if (rc) | |
3204 | goto err6; | |
3205 | } | |
3206 | ||
3207 | memset(¶ms, 0, sizeof(params)); | |
3208 | params.mtu = 9000; | |
3209 | ether_addr_copy(params.ll2_mac_address, qedf->mac); | |
3210 | ||
3211 | /* Start LL2 processing thread */ | |
3212 | snprintf(host_buf, 20, "qedf_%d_ll2", host->host_no); | |
3213 | qedf->ll2_recv_wq = | |
428ca642 | 3214 | create_workqueue(host_buf); |
61d8658b DC |
3215 | if (!qedf->ll2_recv_wq) { |
3216 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n"); | |
e89cabf2 | 3217 | rc = -ENOMEM; |
61d8658b DC |
3218 | goto err7; |
3219 | } | |
3220 | ||
3221 | #ifdef CONFIG_DEBUG_FS | |
d9ea463a AB |
3222 | qedf_dbg_host_init(&(qedf->dbg_ctx), qedf_debugfs_ops, |
3223 | qedf_dbg_fops); | |
61d8658b DC |
3224 | #endif |
3225 | ||
3226 | /* Start LL2 */ | |
3227 | qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); | |
3228 | rc = qed_ops->ll2->start(qedf->cdev, ¶ms); | |
3229 | if (rc) { | |
3230 | QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n"); | |
3231 | goto err7; | |
3232 | } | |
3233 | set_bit(QEDF_LL2_STARTED, &qedf->flags); | |
3234 | ||
cf291163 | 3235 | /* Set initial FIP/FCoE VLAN to NULL */ |
61d8658b DC |
3236 | qedf->vlan_id = 0; |
3237 | ||
3238 | /* | |
3239 | * No need to setup fcoe_ctlr or fc_lport objects during recovery since | |
3240 | * they were not reaped during the unload process. | |
3241 | */ | |
3242 | if (mode != QEDF_MODE_RECOVERY) { | |
3243 | /* Setup imbedded fcoe controller */ | |
3244 | qedf_fcoe_ctlr_setup(qedf); | |
3245 | ||
3246 | /* Setup lport */ | |
3247 | rc = qedf_lport_setup(qedf); | |
3248 | if (rc) { | |
3249 | QEDF_ERR(&(qedf->dbg_ctx), | |
3250 | "qedf_lport_setup failed.\n"); | |
3251 | goto err7; | |
3252 | } | |
3253 | } | |
3254 | ||
3255 | sprintf(host_buf, "qedf_%u_timer", qedf->lport->host->host_no); | |
3256 | qedf->timer_work_queue = | |
428ca642 | 3257 | create_workqueue(host_buf); |
61d8658b DC |
3258 | if (!qedf->timer_work_queue) { |
3259 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " | |
3260 | "workqueue.\n"); | |
e89cabf2 | 3261 | rc = -ENOMEM; |
61d8658b DC |
3262 | goto err7; |
3263 | } | |
3264 | ||
3265 | /* DPC workqueue is not reaped during recovery unload */ | |
3266 | if (mode != QEDF_MODE_RECOVERY) { | |
3267 | sprintf(host_buf, "qedf_%u_dpc", | |
3268 | qedf->lport->host->host_no); | |
428ca642 | 3269 | qedf->dpc_wq = create_workqueue(host_buf); |
61d8658b DC |
3270 | } |
3271 | ||
3272 | /* | |
3273 | * GRC dump and sysfs parameters are not reaped during the recovery | |
3274 | * unload process. | |
3275 | */ | |
3276 | if (mode != QEDF_MODE_RECOVERY) { | |
4b9b7fab CD |
3277 | qedf->grcdump_size = |
3278 | qed_ops->common->dbg_all_data_size(qedf->cdev); | |
61d8658b DC |
3279 | if (qedf->grcdump_size) { |
3280 | rc = qedf_alloc_grc_dump_buf(&qedf->grcdump, | |
3281 | qedf->grcdump_size); | |
3282 | if (rc) { | |
3283 | QEDF_ERR(&(qedf->dbg_ctx), | |
3284 | "GRC Dump buffer alloc failed.\n"); | |
3285 | qedf->grcdump = NULL; | |
3286 | } | |
3287 | ||
3288 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, | |
3289 | "grcdump: addr=%p, size=%u.\n", | |
3290 | qedf->grcdump, qedf->grcdump_size); | |
3291 | } | |
3292 | qedf_create_sysfs_ctx_attr(qedf); | |
3293 | ||
3294 | /* Initialize I/O tracing for this adapter */ | |
3295 | spin_lock_init(&qedf->io_trace_lock); | |
3296 | qedf->io_trace_idx = 0; | |
3297 | } | |
3298 | ||
3299 | init_completion(&qedf->flogi_compl); | |
3300 | ||
6ac17475 SK |
3301 | status = qed_ops->common->update_drv_state(qedf->cdev, true); |
3302 | if (status) | |
3303 | QEDF_ERR(&(qedf->dbg_ctx), | |
3304 | "Failed to send drv state to MFW.\n"); | |
3305 | ||
61d8658b DC |
3306 | memset(&link_params, 0, sizeof(struct qed_link_params)); |
3307 | link_params.link_up = true; | |
3308 | status = qed_ops->common->set_link(qedf->cdev, &link_params); | |
3309 | if (status) | |
3310 | QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n"); | |
3311 | ||
3312 | /* Start/restart discovery */ | |
3313 | if (mode == QEDF_MODE_RECOVERY) | |
3314 | fcoe_ctlr_link_up(&qedf->ctlr); | |
3315 | else | |
3316 | fc_fabric_login(lport); | |
3317 | ||
3318 | /* All good */ | |
3319 | return 0; | |
3320 | ||
3321 | err7: | |
3322 | if (qedf->ll2_recv_wq) | |
3323 | destroy_workqueue(qedf->ll2_recv_wq); | |
3324 | fc_remove_host(qedf->lport->host); | |
3325 | scsi_remove_host(qedf->lport->host); | |
3326 | #ifdef CONFIG_DEBUG_FS | |
3327 | qedf_dbg_host_exit(&(qedf->dbg_ctx)); | |
3328 | #endif | |
3329 | err6: | |
3330 | qedf_cmd_mgr_free(qedf->cmd_mgr); | |
3331 | err5: | |
3332 | qed_ops->stop(qedf->cdev); | |
3333 | err4: | |
3334 | qedf_free_fcoe_pf_param(qedf); | |
3335 | qedf_sync_free_irqs(qedf); | |
3336 | err3: | |
3337 | qed_ops->common->slowpath_stop(qedf->cdev); | |
3338 | err2: | |
3339 | qed_ops->common->remove(qedf->cdev); | |
3340 | err1: | |
3341 | scsi_host_put(lport->host); | |
3342 | err0: | |
3343 | return rc; | |
3344 | } | |
3345 | ||
3346 | static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
3347 | { | |
3348 | return __qedf_probe(pdev, QEDF_MODE_NORMAL); | |
3349 | } | |
3350 | ||
3351 | static void __qedf_remove(struct pci_dev *pdev, int mode) | |
3352 | { | |
3353 | struct qedf_ctx *qedf; | |
6ac17475 | 3354 | int rc; |
61d8658b DC |
3355 | |
3356 | if (!pdev) { | |
3357 | QEDF_ERR(NULL, "pdev is NULL.\n"); | |
3358 | return; | |
3359 | } | |
3360 | ||
3361 | qedf = pci_get_drvdata(pdev); | |
3362 | ||
3363 | /* | |
3364 | * Prevent race where we're in board disable work and then try to | |
3365 | * rmmod the module. | |
3366 | */ | |
3367 | if (test_bit(QEDF_UNLOADING, &qedf->flags)) { | |
3368 | QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n"); | |
3369 | return; | |
3370 | } | |
3371 | ||
3372 | if (mode != QEDF_MODE_RECOVERY) | |
3373 | set_bit(QEDF_UNLOADING, &qedf->flags); | |
3374 | ||
3375 | /* Logoff the fabric to upload all connections */ | |
3376 | if (mode == QEDF_MODE_RECOVERY) | |
3377 | fcoe_ctlr_link_down(&qedf->ctlr); | |
3378 | else | |
3379 | fc_fabric_logoff(qedf->lport); | |
3380 | qedf_wait_for_upload(qedf); | |
3381 | ||
3382 | #ifdef CONFIG_DEBUG_FS | |
3383 | qedf_dbg_host_exit(&(qedf->dbg_ctx)); | |
3384 | #endif | |
3385 | ||
3386 | /* Stop any link update handling */ | |
3387 | cancel_delayed_work_sync(&qedf->link_update); | |
3388 | destroy_workqueue(qedf->link_update_wq); | |
3389 | qedf->link_update_wq = NULL; | |
3390 | ||
3391 | if (qedf->timer_work_queue) | |
3392 | destroy_workqueue(qedf->timer_work_queue); | |
3393 | ||
3394 | /* Stop Light L2 */ | |
3395 | clear_bit(QEDF_LL2_STARTED, &qedf->flags); | |
3396 | qed_ops->ll2->stop(qedf->cdev); | |
3397 | if (qedf->ll2_recv_wq) | |
3398 | destroy_workqueue(qedf->ll2_recv_wq); | |
3399 | ||
3400 | /* Stop fastpath */ | |
3401 | qedf_sync_free_irqs(qedf); | |
3402 | qedf_destroy_sb(qedf); | |
3403 | ||
3404 | /* | |
3405 | * During recovery don't destroy OS constructs that represent the | |
3406 | * physical port. | |
3407 | */ | |
3408 | if (mode != QEDF_MODE_RECOVERY) { | |
3409 | qedf_free_grc_dump_buf(&qedf->grcdump); | |
3410 | qedf_remove_sysfs_ctx_attr(qedf); | |
3411 | ||
3412 | /* Remove all SCSI/libfc/libfcoe structures */ | |
3413 | fcoe_ctlr_destroy(&qedf->ctlr); | |
3414 | fc_lport_destroy(qedf->lport); | |
3415 | fc_remove_host(qedf->lport->host); | |
3416 | scsi_remove_host(qedf->lport->host); | |
3417 | } | |
3418 | ||
3419 | qedf_cmd_mgr_free(qedf->cmd_mgr); | |
3420 | ||
3421 | if (mode != QEDF_MODE_RECOVERY) { | |
3422 | fc_exch_mgr_free(qedf->lport); | |
3423 | fc_lport_free_stats(qedf->lport); | |
3424 | ||
3425 | /* Wait for all vports to be reaped */ | |
3426 | qedf_wait_for_vport_destroy(qedf); | |
3427 | } | |
3428 | ||
3429 | /* | |
3430 | * Now that all connections have been uploaded we can stop the | |
3431 | * rest of the qed operations | |
3432 | */ | |
3433 | qed_ops->stop(qedf->cdev); | |
3434 | ||
3435 | if (mode != QEDF_MODE_RECOVERY) { | |
3436 | if (qedf->dpc_wq) { | |
3437 | /* Stop general DPC handling */ | |
3438 | destroy_workqueue(qedf->dpc_wq); | |
3439 | qedf->dpc_wq = NULL; | |
3440 | } | |
3441 | } | |
3442 | ||
3443 | /* Final shutdown for the board */ | |
3444 | qedf_free_fcoe_pf_param(qedf); | |
3445 | if (mode != QEDF_MODE_RECOVERY) { | |
3446 | qed_ops->common->set_power_state(qedf->cdev, PCI_D0); | |
3447 | pci_set_drvdata(pdev, NULL); | |
3448 | } | |
6ac17475 SK |
3449 | |
3450 | rc = qed_ops->common->update_drv_state(qedf->cdev, false); | |
3451 | if (rc) | |
3452 | QEDF_ERR(&(qedf->dbg_ctx), | |
3453 | "Failed to send drv state to MFW.\n"); | |
3454 | ||
61d8658b DC |
3455 | qed_ops->common->slowpath_stop(qedf->cdev); |
3456 | qed_ops->common->remove(qedf->cdev); | |
3457 | ||
3458 | mempool_destroy(qedf->io_mempool); | |
3459 | ||
3460 | /* Only reap the Scsi_host on a real removal */ | |
3461 | if (mode != QEDF_MODE_RECOVERY) | |
3462 | scsi_host_put(qedf->lport->host); | |
3463 | } | |
3464 | ||
3465 | static void qedf_remove(struct pci_dev *pdev) | |
3466 | { | |
3467 | /* Check to make sure this function wasn't already disabled */ | |
3468 | if (!atomic_read(&pdev->enable_cnt)) | |
3469 | return; | |
3470 | ||
3471 | __qedf_remove(pdev, QEDF_MODE_NORMAL); | |
3472 | } | |
3473 | ||
4b9b7fab CD |
3474 | void qedf_wq_grcdump(struct work_struct *work) |
3475 | { | |
3476 | struct qedf_ctx *qedf = | |
3477 | container_of(work, struct qedf_ctx, grcdump_work.work); | |
3478 | ||
3479 | QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n"); | |
3480 | qedf_capture_grc_dump(qedf); | |
3481 | } | |
3482 | ||
642a0b37 CD |
3483 | /* |
3484 | * Protocol TLV handler | |
3485 | */ | |
3486 | void qedf_get_protocol_tlv_data(void *dev, void *data) | |
3487 | { | |
3488 | struct qedf_ctx *qedf = dev; | |
3489 | struct qed_mfw_tlv_fcoe *fcoe = data; | |
3490 | struct fc_lport *lport = qedf->lport; | |
3491 | struct Scsi_Host *host = lport->host; | |
3492 | struct fc_host_attrs *fc_host = shost_to_fc_host(host); | |
3493 | struct fc_host_statistics *hst; | |
3494 | ||
3495 | /* Force a refresh of the fc_host stats including offload stats */ | |
3496 | hst = qedf_fc_get_host_stats(host); | |
3497 | ||
3498 | fcoe->qos_pri_set = true; | |
3499 | fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ | |
3500 | ||
3501 | fcoe->ra_tov_set = true; | |
3502 | fcoe->ra_tov = lport->r_a_tov; | |
3503 | ||
3504 | fcoe->ed_tov_set = true; | |
3505 | fcoe->ed_tov = lport->e_d_tov; | |
3506 | ||
3507 | fcoe->npiv_state_set = true; | |
3508 | fcoe->npiv_state = 1; /* NPIV always enabled */ | |
3509 | ||
3510 | fcoe->num_npiv_ids_set = true; | |
3511 | fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; | |
3512 | ||
3513 | /* Certain attributes we only want to set if we've selected an FCF */ | |
3514 | if (qedf->ctlr.sel_fcf) { | |
3515 | fcoe->switch_name_set = true; | |
3516 | u64_to_wwn(qedf->ctlr.sel_fcf->switch_name, fcoe->switch_name); | |
3517 | } | |
3518 | ||
3519 | fcoe->port_state_set = true; | |
3520 | /* For qedf we're either link down or fabric attach */ | |
3521 | if (lport->link_up) | |
3522 | fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; | |
3523 | else | |
3524 | fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; | |
3525 | ||
3526 | fcoe->link_failures_set = true; | |
3527 | fcoe->link_failures = (u16)hst->link_failure_count; | |
3528 | ||
3529 | fcoe->fcoe_txq_depth_set = true; | |
3530 | fcoe->fcoe_rxq_depth_set = true; | |
3531 | fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; | |
3532 | fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; | |
3533 | ||
3534 | fcoe->fcoe_rx_frames_set = true; | |
3535 | fcoe->fcoe_rx_frames = hst->rx_frames; | |
3536 | ||
3537 | fcoe->fcoe_tx_frames_set = true; | |
3538 | fcoe->fcoe_tx_frames = hst->tx_frames; | |
3539 | ||
3540 | fcoe->fcoe_rx_bytes_set = true; | |
3541 | fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; | |
3542 | ||
3543 | fcoe->fcoe_tx_bytes_set = true; | |
3544 | fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; | |
3545 | ||
3546 | fcoe->crc_count_set = true; | |
3547 | fcoe->crc_count = hst->invalid_crc_count; | |
3548 | ||
3549 | fcoe->tx_abts_set = true; | |
3550 | fcoe->tx_abts = hst->fcp_packet_aborts; | |
3551 | ||
3552 | fcoe->tx_lun_rst_set = true; | |
3553 | fcoe->tx_lun_rst = qedf->lun_resets; | |
3554 | ||
3555 | fcoe->abort_task_sets_set = true; | |
3556 | fcoe->abort_task_sets = qedf->packet_aborts; | |
3557 | ||
3558 | fcoe->scsi_busy_set = true; | |
3559 | fcoe->scsi_busy = qedf->busy; | |
3560 | ||
3561 | fcoe->scsi_tsk_full_set = true; | |
3562 | fcoe->scsi_tsk_full = qedf->task_set_fulls; | |
3563 | } | |
3564 | ||
8673daf4 CD |
3565 | /* Generic TLV data callback */ |
3566 | void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) | |
3567 | { | |
3568 | struct qedf_ctx *qedf; | |
3569 | ||
3570 | if (!dev) { | |
3571 | QEDF_INFO(NULL, QEDF_LOG_EVT, | |
3572 | "dev is NULL so ignoring get_generic_tlv_data request.\n"); | |
3573 | return; | |
3574 | } | |
3575 | qedf = (struct qedf_ctx *)dev; | |
3576 | ||
3577 | memset(data, 0, sizeof(struct qed_generic_tlvs)); | |
3578 | ether_addr_copy(data->mac[0], qedf->mac); | |
3579 | } | |
3580 | ||
61d8658b DC |
3581 | /* |
3582 | * Module Init/Remove | |
3583 | */ | |
3584 | ||
3585 | static int __init qedf_init(void) | |
3586 | { | |
3587 | int ret; | |
3588 | ||
3589 | /* If debug=1 passed, set the default log mask */ | |
3590 | if (qedf_debug == QEDF_LOG_DEFAULT) | |
3591 | qedf_debug = QEDF_DEFAULT_LOG_MASK; | |
3592 | ||
84b2ba6e CD |
3593 | /* |
3594 | * Check that default prio for FIP/FCoE traffic is between 0..7 if a | |
3595 | * value has been set | |
3596 | */ | |
3597 | if (qedf_default_prio > -1) | |
3598 | if (qedf_default_prio > 7) { | |
3599 | qedf_default_prio = QEDF_DEFAULT_PRIO; | |
3600 | QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n", | |
3601 | QEDF_DEFAULT_PRIO); | |
3602 | } | |
a93755cf | 3603 | |
61d8658b DC |
3604 | /* Print driver banner */ |
3605 | QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n", QEDF_DESCR, | |
3606 | QEDF_VERSION); | |
3607 | ||
3608 | /* Create kmem_cache for qedf_io_work structs */ | |
3609 | qedf_io_work_cache = kmem_cache_create("qedf_io_work_cache", | |
3610 | sizeof(struct qedf_io_work), 0, SLAB_HWCACHE_ALIGN, NULL); | |
3611 | if (qedf_io_work_cache == NULL) { | |
3612 | QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n"); | |
3613 | goto err1; | |
3614 | } | |
3615 | QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n", | |
3616 | qedf_io_work_cache); | |
3617 | ||
3618 | qed_ops = qed_get_fcoe_ops(); | |
3619 | if (!qed_ops) { | |
3620 | QEDF_ERR(NULL, "Failed to get qed fcoe operations\n"); | |
3621 | goto err1; | |
3622 | } | |
3623 | ||
3624 | #ifdef CONFIG_DEBUG_FS | |
3625 | qedf_dbg_init("qedf"); | |
3626 | #endif | |
3627 | ||
3628 | qedf_fc_transport_template = | |
3629 | fc_attach_transport(&qedf_fc_transport_fn); | |
3630 | if (!qedf_fc_transport_template) { | |
3631 | QEDF_ERR(NULL, "Could not register with FC transport\n"); | |
3632 | goto err2; | |
3633 | } | |
3634 | ||
3635 | qedf_fc_vport_transport_template = | |
3636 | fc_attach_transport(&qedf_fc_vport_transport_fn); | |
3637 | if (!qedf_fc_vport_transport_template) { | |
3638 | QEDF_ERR(NULL, "Could not register vport template with FC " | |
3639 | "transport\n"); | |
3640 | goto err3; | |
3641 | } | |
3642 | ||
3643 | qedf_io_wq = create_workqueue("qedf_io_wq"); | |
3644 | if (!qedf_io_wq) { | |
3645 | QEDF_ERR(NULL, "Could not create qedf_io_wq.\n"); | |
3646 | goto err4; | |
3647 | } | |
3648 | ||
3649 | qedf_cb_ops.get_login_failures = qedf_get_login_failures; | |
3650 | ||
3651 | ret = pci_register_driver(&qedf_pci_driver); | |
3652 | if (ret) { | |
3653 | QEDF_ERR(NULL, "Failed to register driver\n"); | |
3654 | goto err5; | |
3655 | } | |
3656 | ||
3657 | return 0; | |
3658 | ||
3659 | err5: | |
3660 | destroy_workqueue(qedf_io_wq); | |
3661 | err4: | |
3662 | fc_release_transport(qedf_fc_vport_transport_template); | |
3663 | err3: | |
3664 | fc_release_transport(qedf_fc_transport_template); | |
3665 | err2: | |
3666 | #ifdef CONFIG_DEBUG_FS | |
3667 | qedf_dbg_exit(); | |
3668 | #endif | |
3669 | qed_put_fcoe_ops(); | |
3670 | err1: | |
3671 | return -EINVAL; | |
3672 | } | |
3673 | ||
3674 | static void __exit qedf_cleanup(void) | |
3675 | { | |
3676 | pci_unregister_driver(&qedf_pci_driver); | |
3677 | ||
3678 | destroy_workqueue(qedf_io_wq); | |
3679 | ||
3680 | fc_release_transport(qedf_fc_vport_transport_template); | |
3681 | fc_release_transport(qedf_fc_transport_template); | |
3682 | #ifdef CONFIG_DEBUG_FS | |
3683 | qedf_dbg_exit(); | |
3684 | #endif | |
3685 | qed_put_fcoe_ops(); | |
3686 | ||
3687 | kmem_cache_destroy(qedf_io_work_cache); | |
3688 | } | |
3689 | ||
3690 | MODULE_LICENSE("GPL"); | |
3691 | MODULE_DESCRIPTION("QLogic QEDF 25/40/50/100Gb FCoE Driver"); | |
3692 | MODULE_AUTHOR("QLogic Corporation"); | |
3693 | MODULE_VERSION(QEDF_VERSION); | |
3694 | module_init(qedf_init); | |
3695 | module_exit(qedf_cleanup); |