1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * QLogic FCoE Offload Driver |
4 | * Copyright (c) 2016-2018 Cavium Inc. |
5 | */ |
6 | #include <linux/init.h> |
7 | #include <linux/kernel.h> |
8 | #include <linux/module.h> |
9 | #include <linux/pci.h> |
10 | #include <linux/device.h> |
11 | #include <linux/highmem.h> |
12 | #include <linux/crc32.h> |
13 | #include <linux/interrupt.h> |
14 | #include <linux/list.h> |
15 | #include <linux/kthread.h> |
16 | #include <linux/phylink.h> |
17 | #include <scsi/libfc.h> |
18 | #include <scsi/scsi_host.h> |
19 | #include <scsi/fc_frame.h> |
20 | #include <linux/if_ether.h> |
21 | #include <linux/if_vlan.h> |
22 | #include <linux/cpu.h> |
23 | #include "qedf.h" |
24 | #include "qedf_dbg.h" |
25 | #include <uapi/linux/pci_regs.h> |
26 | |
27 | const struct qed_fcoe_ops *qed_ops; |
28 | |
29 | static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id); |
30 | static void qedf_remove(struct pci_dev *pdev); |
31 | static void qedf_shutdown(struct pci_dev *pdev); |
32 | static void qedf_schedule_recovery_handler(void *dev); |
33 | static void qedf_recovery_handler(struct work_struct *work); |
34 | static int qedf_suspend(struct pci_dev *pdev, pm_message_t state); |
35 | |
36 | /* |
37 | * Driver module parameters. |
38 | */ |
39 | static unsigned int qedf_dev_loss_tmo = 60; |
40 | module_param_named(dev_loss_tmo, qedf_dev_loss_tmo, int, S_IRUGO); |
41 | MODULE_PARM_DESC(dev_loss_tmo, " dev_loss_tmo setting for attached " |
42 | "remote ports (default 60)" ); |
43 | |
44 | uint qedf_debug = QEDF_LOG_INFO; |
45 | module_param_named(debug, qedf_debug, uint, S_IRUGO|S_IWUSR); |
46 | MODULE_PARM_DESC(debug, " Debug mask. Pass '1' to enable default debugging" |
47 | " mask" ); |
48 | |
49 | static uint qedf_fipvlan_retries = 60; |
50 | module_param_named(fipvlan_retries, qedf_fipvlan_retries, int, S_IRUGO); |
51 | MODULE_PARM_DESC(fipvlan_retries, " Number of FIP VLAN requests to attempt " |
52 | "before giving up (default 60)" ); |
53 | |
54 | static uint qedf_fallback_vlan = QEDF_FALLBACK_VLAN; |
55 | module_param_named(fallback_vlan, qedf_fallback_vlan, int, S_IRUGO); |
56 | MODULE_PARM_DESC(fallback_vlan, " VLAN ID to try if fip vlan request fails " |
57 | "(default 1002)." ); |
58 | |
59 | static int qedf_default_prio = -1; |
60 | module_param_named(default_prio, qedf_default_prio, int, S_IRUGO); |
61 | MODULE_PARM_DESC(default_prio, " Override 802.1q priority for FIP and FCoE" |
62 | " traffic (value between 0 and 7, default 3)." ); |
63 | |
64 | uint qedf_dump_frames; |
65 | module_param_named(dump_frames, qedf_dump_frames, int, S_IRUGO | S_IWUSR); |
66 | MODULE_PARM_DESC(dump_frames, " Print the skb data of FIP and FCoE frames " |
67 | "(default off)" ); |
68 | |
69 | static uint qedf_queue_depth; |
70 | module_param_named(queue_depth, qedf_queue_depth, int, S_IRUGO); |
71 | MODULE_PARM_DESC(queue_depth, " Sets the queue depth for all LUNs discovered " |
72 | "by the qedf driver. Default is 0 (use OS default)." ); |
73 | |
74 | uint qedf_io_tracing; |
75 | module_param_named(io_tracing, qedf_io_tracing, int, S_IRUGO | S_IWUSR); |
76 | MODULE_PARM_DESC(io_tracing, " Enable logging of SCSI requests/completions " |
77 | "into trace buffer. (default off)." ); |
78 | |
79 | static uint qedf_max_lun = MAX_FIBRE_LUNS; |
80 | module_param_named(max_lun, qedf_max_lun, int, S_IRUGO); |
81 | MODULE_PARM_DESC(max_lun, " Sets the maximum luns per target that the driver " |
82 | "supports. (default 0xffffffff)" ); |
83 | |
84 | uint qedf_link_down_tmo; |
85 | module_param_named(link_down_tmo, qedf_link_down_tmo, int, S_IRUGO); |
86 | MODULE_PARM_DESC(link_down_tmo, " Delays informing the fcoe transport that the " |
87 | "link is down by N seconds." ); |
88 | |
89 | bool qedf_retry_delay; |
90 | module_param_named(retry_delay, qedf_retry_delay, bool, S_IRUGO | S_IWUSR); |
91 | MODULE_PARM_DESC(retry_delay, " Enable/disable handling of FCP_RSP IU retry " |
92 | "delay handling (default off)." ); |
93 | |
94 | static bool qedf_dcbx_no_wait; |
95 | module_param_named(dcbx_no_wait, qedf_dcbx_no_wait, bool, S_IRUGO | S_IWUSR); |
96 | MODULE_PARM_DESC(dcbx_no_wait, " Do not wait for DCBX convergence to start " |
97 | "sending FIP VLAN requests on link up (Default: off)." ); |
98 | |
99 | static uint qedf_dp_module; |
100 | module_param_named(dp_module, qedf_dp_module, uint, S_IRUGO); |
101 | MODULE_PARM_DESC(dp_module, " bit flags control for verbose printk passed " |
102 | "qed module during probe." ); |
103 | |
104 | static uint qedf_dp_level = QED_LEVEL_NOTICE; |
105 | module_param_named(dp_level, qedf_dp_level, uint, S_IRUGO); |
106 | MODULE_PARM_DESC(dp_level, " printk verbosity control passed to qed module " |
107 | "during probe (0-3: 0 more verbose)." ); |
108 | |
109 | static bool qedf_enable_recovery = true; |
110 | module_param_named(enable_recovery, qedf_enable_recovery, |
111 | bool, S_IRUGO | S_IWUSR); |
112 | MODULE_PARM_DESC(enable_recovery, "Enable/disable recovery on driver/firmware " |
113 | "interface level errors 0 = Disabled, 1 = Enabled (Default: 1)." ); |
114 | |
115 | struct workqueue_struct *qedf_io_wq; |
116 | |
117 | static struct fcoe_percpu_s qedf_global; |
118 | static DEFINE_SPINLOCK(qedf_global_lock); |
119 | |
120 | static struct kmem_cache *qedf_io_work_cache; |
121 | |
122 | void qedf_set_vlan_id(struct qedf_ctx *qedf, int vlan_id) |
123 | { |
124 | int vlan_id_tmp = 0; |
125 | |
126 | vlan_id_tmp = vlan_id | (qedf->prio << VLAN_PRIO_SHIFT); |
127 | qedf->vlan_id = vlan_id_tmp; |
128 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
129 | "Setting vlan_id=0x%04x prio=%d.\n" , |
130 | vlan_id_tmp, qedf->prio); |
131 | } |
132 | |
133 | /* Returns true if we have a valid vlan, false otherwise */ |
134 | static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) |
135 | { |
136 | |
137 | while (qedf->fipvlan_retries--) { |
138 | /* This is to catch if link goes down during fipvlan retries */ |
139 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_DOWN) { |
140 | QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n" ); |
141 | return false; |
142 | } |
143 | |
144 | if (test_bit(QEDF_UNLOADING, &qedf->flags)) { |
145 | QEDF_ERR(&qedf->dbg_ctx, "Driver unloading.\n" ); |
146 | return false; |
147 | } |
148 | |
149 | if (qedf->vlan_id > 0) { |
150 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
151 | "vlan = 0x%x already set, calling ctlr_link_up.\n" , |
152 | qedf->vlan_id); |
153 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_UP) |
154 | fcoe_ctlr_link_up(&qedf->ctlr); |
155 | return true; |
156 | } |
157 | |
158 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
159 | "Retry %d.\n" , qedf->fipvlan_retries); |
160 | init_completion(x: &qedf->fipvlan_compl); |
161 | qedf_fcoe_send_vlan_req(qedf); |
162 | wait_for_completion_timeout(x: &qedf->fipvlan_compl, timeout: 1 * HZ); |
163 | } |
164 | |
165 | return false; |
166 | } |
167 | |
168 | static void qedf_handle_link_update(struct work_struct *work) |
169 | { |
170 | struct qedf_ctx *qedf = |
171 | container_of(work, struct qedf_ctx, link_update.work); |
172 | int rc; |
173 | |
174 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Entered. link_state=%d.\n" , |
175 | atomic_read(&qedf->link_state)); |
176 | |
177 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_UP) { |
178 | rc = qedf_initiate_fipvlan_req(qedf); |
179 | if (rc) |
180 | return; |
181 | |
182 | if (atomic_read(v: &qedf->link_state) != QEDF_LINK_UP) { |
183 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
184 | "Link is down, resetting vlan_id.\n" ); |
185 | qedf->vlan_id = 0; |
186 | return; |
187 | } |
188 | |
189 | /* |
190 | * If we get here then we never received a repsonse to our |
191 | * fip vlan request so set the vlan_id to the default and |
192 | * tell FCoE that the link is up |
193 | */ |
194 | QEDF_WARN(&(qedf->dbg_ctx), "Did not receive FIP VLAN " |
195 | "response, falling back to default VLAN %d.\n" , |
196 | qedf_fallback_vlan); |
197 | qedf_set_vlan_id(qedf, vlan_id: qedf_fallback_vlan); |
198 | |
199 | /* |
200 | * Zero out data_src_addr so we'll update it with the new |
201 | * lport port_id |
202 | */ |
203 | eth_zero_addr(addr: qedf->data_src_addr); |
204 | fcoe_ctlr_link_up(&qedf->ctlr); |
205 | } else if (atomic_read(v: &qedf->link_state) == QEDF_LINK_DOWN) { |
206 | /* |
207 | * If we hit here and link_down_tmo_valid is still 1 it means |
208 | * that link_down_tmo timed out so set it to 0 to make sure any |
209 | * other readers have accurate state. |
210 | */ |
211 | atomic_set(v: &qedf->link_down_tmo_valid, i: 0); |
212 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
213 | "Calling fcoe_ctlr_link_down().\n" ); |
214 | fcoe_ctlr_link_down(&qedf->ctlr); |
215 | if (qedf_wait_for_upload(qedf) == false) |
216 | QEDF_ERR(&qedf->dbg_ctx, |
217 | "Could not upload all sessions.\n" ); |
218 | /* Reset the number of FIP VLAN retries */ |
219 | qedf->fipvlan_retries = qedf_fipvlan_retries; |
220 | } |
221 | } |
222 | |
223 | #define QEDF_FCOE_MAC_METHOD_GRANGED_MAC 1 |
224 | #define QEDF_FCOE_MAC_METHOD_FCF_MAP 2 |
225 | #define QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC 3 |
226 | static void qedf_set_data_src_addr(struct qedf_ctx *qedf, struct fc_frame *fp) |
227 | { |
228 | u8 *granted_mac; |
229 | struct fc_frame_header *fh = fc_frame_header_get(fp); |
230 | u8 fc_map[3]; |
231 | int method = 0; |
232 | |
233 | /* Get granted MAC address from FIP FLOGI payload */ |
234 | granted_mac = fr_cb(fp)->granted_mac; |
235 | |
236 | /* |
237 | * We set the source MAC for FCoE traffic based on the Granted MAC |
238 | * address from the switch. |
239 | * |
240 | * If granted_mac is non-zero, we used that. |
241 | * If the granted_mac is zeroed out, created the FCoE MAC based on |
242 | * the sel_fcf->fc_map and the d_id fo the FLOGI frame. |
243 | * If sel_fcf->fc_map is 0 then we use the default FCF-MAC plus the |
244 | * d_id of the FLOGI frame. |
245 | */ |
246 | if (!is_zero_ether_addr(addr: granted_mac)) { |
247 | ether_addr_copy(dst: qedf->data_src_addr, src: granted_mac); |
248 | method = QEDF_FCOE_MAC_METHOD_GRANGED_MAC; |
249 | } else if (qedf->ctlr.sel_fcf->fc_map != 0) { |
250 | hton24(p: fc_map, v: qedf->ctlr.sel_fcf->fc_map); |
251 | qedf->data_src_addr[0] = fc_map[0]; |
252 | qedf->data_src_addr[1] = fc_map[1]; |
253 | qedf->data_src_addr[2] = fc_map[2]; |
254 | qedf->data_src_addr[3] = fh->fh_d_id[0]; |
255 | qedf->data_src_addr[4] = fh->fh_d_id[1]; |
256 | qedf->data_src_addr[5] = fh->fh_d_id[2]; |
257 | method = QEDF_FCOE_MAC_METHOD_FCF_MAP; |
258 | } else { |
259 | fc_fcoe_set_mac(mac: qedf->data_src_addr, did: fh->fh_d_id); |
260 | method = QEDF_FCOE_MAC_METHOD_FCOE_SET_MAC; |
261 | } |
262 | |
263 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
264 | "QEDF data_src_mac=%pM method=%d.\n" , qedf->data_src_addr, method); |
265 | } |
266 | |
267 | static void qedf_flogi_resp(struct fc_seq *seq, struct fc_frame *fp, |
268 | void *arg) |
269 | { |
270 | struct fc_exch *exch = fc_seq_exch(seq); |
271 | struct fc_lport *lport = exch->lp; |
272 | struct qedf_ctx *qedf = lport_priv(lport); |
273 | |
274 | if (!qedf) { |
275 | QEDF_ERR(NULL, "qedf is NULL.\n" ); |
276 | return; |
277 | } |
278 | |
279 | /* |
280 | * If ERR_PTR is set then don't try to stat anything as it will cause |
281 | * a crash when we access fp. |
282 | */ |
283 | if (IS_ERR(ptr: fp)) { |
284 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, |
285 | "fp has IS_ERR() set.\n" ); |
286 | goto skip_stat; |
287 | } |
288 | |
289 | /* Log stats for FLOGI reject */ |
290 | if (fc_frame_payload_op(fp) == ELS_LS_RJT) |
291 | qedf->flogi_failed++; |
292 | else if (fc_frame_payload_op(fp) == ELS_LS_ACC) { |
293 | /* Set the source MAC we will use for FCoE traffic */ |
294 | qedf_set_data_src_addr(qedf, fp); |
295 | qedf->flogi_pending = 0; |
296 | } |
297 | |
298 | /* Complete flogi_compl so we can proceed to sending ADISCs */ |
299 | complete(&qedf->flogi_compl); |
300 | |
301 | skip_stat: |
302 | /* Report response to libfc */ |
303 | fc_lport_flogi_resp(seq, fp, lport); |
304 | } |
305 | |
306 | static struct fc_seq *qedf_elsct_send(struct fc_lport *lport, u32 did, |
307 | struct fc_frame *fp, unsigned int op, |
308 | void (*resp)(struct fc_seq *, |
309 | struct fc_frame *, |
310 | void *), |
311 | void *arg, u32 timeout) |
312 | { |
313 | struct qedf_ctx *qedf = lport_priv(lport); |
314 | |
315 | /* |
316 | * Intercept FLOGI for statistic purposes. Note we use the resp |
317 | * callback to tell if this is really a flogi. |
318 | */ |
319 | if (resp == fc_lport_flogi_resp) { |
320 | qedf->flogi_cnt++; |
321 | if (qedf->flogi_pending >= QEDF_FLOGI_RETRY_CNT) { |
322 | schedule_delayed_work(dwork: &qedf->stag_work, delay: 2); |
323 | return NULL; |
324 | } |
325 | qedf->flogi_pending++; |
326 | return fc_elsct_send(lport, did, fp, op, resp: qedf_flogi_resp, |
327 | arg, timer_msec: timeout); |
328 | } |
329 | |
330 | return fc_elsct_send(lport, did, fp, op, resp, arg, timer_msec: timeout); |
331 | } |
332 | |
333 | int qedf_send_flogi(struct qedf_ctx *qedf) |
334 | { |
335 | struct fc_lport *lport; |
336 | struct fc_frame *fp; |
337 | |
338 | lport = qedf->lport; |
339 | |
340 | if (!lport->tt.elsct_send) { |
341 | QEDF_ERR(&qedf->dbg_ctx, "tt.elsct_send not set.\n" ); |
342 | return -EINVAL; |
343 | } |
344 | |
345 | fp = fc_frame_alloc(dev: lport, len: sizeof(struct fc_els_flogi)); |
346 | if (!fp) { |
347 | QEDF_ERR(&(qedf->dbg_ctx), "fc_frame_alloc failed.\n" ); |
348 | return -ENOMEM; |
349 | } |
350 | |
351 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_ELS, |
352 | "Sending FLOGI to reestablish session with switch.\n" ); |
353 | lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, |
354 | ELS_FLOGI, qedf_flogi_resp, lport, lport->r_a_tov); |
355 | |
356 | init_completion(x: &qedf->flogi_compl); |
357 | |
358 | return 0; |
359 | } |
360 | |
361 | /* |
362 | * This function is called if link_down_tmo is in use. If we get a link up and |
363 | * link_down_tmo has not expired then use just FLOGI/ADISC to recover our |
364 | * sessions with targets. Otherwise, just call fcoe_ctlr_link_up(). |
365 | */ |
366 | static void qedf_link_recovery(struct work_struct *work) |
367 | { |
368 | struct qedf_ctx *qedf = |
369 | container_of(work, struct qedf_ctx, link_recovery.work); |
370 | struct fc_lport *lport = qedf->lport; |
371 | struct fc_rport_priv *rdata; |
372 | bool rc; |
373 | int retries = 30; |
374 | int rval, i; |
375 | struct list_head rdata_login_list; |
376 | |
377 | INIT_LIST_HEAD(list: &rdata_login_list); |
378 | |
379 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
380 | "Link down tmo did not expire.\n" ); |
381 | |
382 | /* |
383 | * Essentially reset the fcoe_ctlr here without affecting the state |
384 | * of the libfc structs. |
385 | */ |
386 | qedf->ctlr.state = FIP_ST_LINK_WAIT; |
387 | fcoe_ctlr_link_down(&qedf->ctlr); |
388 | |
389 | /* |
390 | * Bring the link up before we send the fipvlan request so libfcoe |
391 | * can select a new fcf in parallel |
392 | */ |
393 | fcoe_ctlr_link_up(&qedf->ctlr); |
394 | |
395 | /* Since the link when down and up to verify which vlan we're on */ |
396 | qedf->fipvlan_retries = qedf_fipvlan_retries; |
397 | rc = qedf_initiate_fipvlan_req(qedf); |
398 | /* If getting the VLAN fails, set the VLAN to the fallback one */ |
399 | if (!rc) |
400 | qedf_set_vlan_id(qedf, vlan_id: qedf_fallback_vlan); |
401 | |
402 | /* |
403 | * We need to wait for an FCF to be selected due to the |
404 | * fcoe_ctlr_link_up other the FLOGI will be rejected. |
405 | */ |
406 | while (retries > 0) { |
407 | if (qedf->ctlr.sel_fcf) { |
408 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
409 | "FCF reselected, proceeding with FLOGI.\n" ); |
410 | break; |
411 | } |
412 | msleep(msecs: 500); |
413 | retries--; |
414 | } |
415 | |
416 | if (retries < 1) { |
417 | QEDF_ERR(&(qedf->dbg_ctx), "Exhausted retries waiting for " |
418 | "FCF selection.\n" ); |
419 | return; |
420 | } |
421 | |
422 | rval = qedf_send_flogi(qedf); |
423 | if (rval) |
424 | return; |
425 | |
426 | /* Wait for FLOGI completion before proceeding with sending ADISCs */ |
427 | i = wait_for_completion_timeout(x: &qedf->flogi_compl, |
428 | timeout: qedf->lport->r_a_tov); |
429 | if (i == 0) { |
430 | QEDF_ERR(&(qedf->dbg_ctx), "FLOGI timed out.\n" ); |
431 | return; |
432 | } |
433 | |
434 | /* |
435 | * Call lport->tt.rport_login which will cause libfc to send an |
436 | * ADISC since the rport is in state ready. |
437 | */ |
438 | mutex_lock(&lport->disc.disc_mutex); |
439 | list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) { |
440 | if (kref_get_unless_zero(kref: &rdata->kref)) { |
441 | fc_rport_login(rdata); |
442 | kref_put(kref: &rdata->kref, release: fc_rport_destroy); |
443 | } |
444 | } |
445 | mutex_unlock(lock: &lport->disc.disc_mutex); |
446 | } |
447 | |
448 | static void qedf_update_link_speed(struct qedf_ctx *qedf, |
449 | struct qed_link_output *link) |
450 | { |
451 | __ETHTOOL_DECLARE_LINK_MODE_MASK(sup_caps); |
452 | struct fc_lport *lport = qedf->lport; |
453 | |
454 | lport->link_speed = FC_PORTSPEED_UNKNOWN; |
455 | lport->link_supported_speeds = FC_PORTSPEED_UNKNOWN; |
456 | |
457 | /* Set fc_host link speed */ |
458 | switch (link->speed) { |
459 | case 10000: |
460 | lport->link_speed = FC_PORTSPEED_10GBIT; |
461 | break; |
462 | case 25000: |
463 | lport->link_speed = FC_PORTSPEED_25GBIT; |
464 | break; |
465 | case 40000: |
466 | lport->link_speed = FC_PORTSPEED_40GBIT; |
467 | break; |
468 | case 50000: |
469 | lport->link_speed = FC_PORTSPEED_50GBIT; |
470 | break; |
471 | case 100000: |
472 | lport->link_speed = FC_PORTSPEED_100GBIT; |
473 | break; |
474 | case 20000: |
475 | lport->link_speed = FC_PORTSPEED_20GBIT; |
476 | break; |
477 | default: |
478 | lport->link_speed = FC_PORTSPEED_UNKNOWN; |
479 | break; |
480 | } |
481 | |
482 | /* |
483 | * Set supported link speed by querying the supported |
484 | * capabilities of the link. |
485 | */ |
486 | |
487 | phylink_zero(sup_caps); |
488 | phylink_set(sup_caps, 10000baseT_Full); |
489 | phylink_set(sup_caps, 10000baseKX4_Full); |
490 | phylink_set(sup_caps, 10000baseR_FEC); |
491 | phylink_set(sup_caps, 10000baseCR_Full); |
492 | phylink_set(sup_caps, 10000baseSR_Full); |
493 | phylink_set(sup_caps, 10000baseLR_Full); |
494 | phylink_set(sup_caps, 10000baseLRM_Full); |
495 | phylink_set(sup_caps, 10000baseKR_Full); |
496 | |
497 | if (linkmode_intersects(src1: link->supported_caps, src2: sup_caps)) |
498 | lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; |
499 | |
500 | phylink_zero(sup_caps); |
501 | phylink_set(sup_caps, 25000baseKR_Full); |
502 | phylink_set(sup_caps, 25000baseCR_Full); |
503 | phylink_set(sup_caps, 25000baseSR_Full); |
504 | |
505 | if (linkmode_intersects(src1: link->supported_caps, src2: sup_caps)) |
506 | lport->link_supported_speeds |= FC_PORTSPEED_25GBIT; |
507 | |
508 | phylink_zero(sup_caps); |
509 | phylink_set(sup_caps, 40000baseLR4_Full); |
510 | phylink_set(sup_caps, 40000baseKR4_Full); |
511 | phylink_set(sup_caps, 40000baseCR4_Full); |
512 | phylink_set(sup_caps, 40000baseSR4_Full); |
513 | |
514 | if (linkmode_intersects(src1: link->supported_caps, src2: sup_caps)) |
515 | lport->link_supported_speeds |= FC_PORTSPEED_40GBIT; |
516 | |
517 | phylink_zero(sup_caps); |
518 | phylink_set(sup_caps, 50000baseKR2_Full); |
519 | phylink_set(sup_caps, 50000baseCR2_Full); |
520 | phylink_set(sup_caps, 50000baseSR2_Full); |
521 | |
522 | if (linkmode_intersects(src1: link->supported_caps, src2: sup_caps)) |
523 | lport->link_supported_speeds |= FC_PORTSPEED_50GBIT; |
524 | |
525 | phylink_zero(sup_caps); |
526 | phylink_set(sup_caps, 100000baseKR4_Full); |
527 | phylink_set(sup_caps, 100000baseSR4_Full); |
528 | phylink_set(sup_caps, 100000baseCR4_Full); |
529 | phylink_set(sup_caps, 100000baseLR4_ER4_Full); |
530 | |
531 | if (linkmode_intersects(src1: link->supported_caps, src2: sup_caps)) |
532 | lport->link_supported_speeds |= FC_PORTSPEED_100GBIT; |
533 | |
534 | phylink_zero(sup_caps); |
535 | phylink_set(sup_caps, 20000baseKR2_Full); |
536 | |
537 | if (linkmode_intersects(src1: link->supported_caps, src2: sup_caps)) |
538 | lport->link_supported_speeds |= FC_PORTSPEED_20GBIT; |
539 | |
540 | if (lport->host && lport->host->shost_data) |
541 | fc_host_supported_speeds(lport->host) = |
542 | lport->link_supported_speeds; |
543 | } |
544 | |
545 | static void qedf_bw_update(void *dev) |
546 | { |
547 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; |
548 | struct qed_link_output link; |
549 | |
550 | /* Get the latest status of the link */ |
551 | qed_ops->common->get_link(qedf->cdev, &link); |
552 | |
553 | if (test_bit(QEDF_UNLOADING, &qedf->flags)) { |
554 | QEDF_ERR(&qedf->dbg_ctx, |
555 | "Ignore link update, driver getting unload.\n" ); |
556 | return; |
557 | } |
558 | |
559 | if (link.link_up) { |
560 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_UP) |
561 | qedf_update_link_speed(qedf, link: &link); |
562 | else |
563 | QEDF_ERR(&qedf->dbg_ctx, |
564 | "Ignore bw update, link is down.\n" ); |
565 | |
566 | } else { |
567 | QEDF_ERR(&qedf->dbg_ctx, "link_up is not set.\n" ); |
568 | } |
569 | } |
570 | |
571 | static void qedf_link_update(void *dev, struct qed_link_output *link) |
572 | { |
573 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; |
574 | |
575 | /* |
576 | * Prevent race where we're removing the module and we get link update |
577 | * for qed. |
578 | */ |
579 | if (test_bit(QEDF_UNLOADING, &qedf->flags)) { |
580 | QEDF_ERR(&qedf->dbg_ctx, |
581 | "Ignore link update, driver getting unload.\n" ); |
582 | return; |
583 | } |
584 | |
585 | if (link->link_up) { |
586 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_UP) { |
587 | QEDF_INFO((&qedf->dbg_ctx), QEDF_LOG_DISC, |
588 | "Ignoring link up event as link is already up.\n" ); |
589 | return; |
590 | } |
591 | QEDF_ERR(&(qedf->dbg_ctx), "LINK UP (%d GB/s).\n" , |
592 | link->speed / 1000); |
593 | |
594 | /* Cancel any pending link down work */ |
595 | cancel_delayed_work(dwork: &qedf->link_update); |
596 | |
597 | atomic_set(v: &qedf->link_state, QEDF_LINK_UP); |
598 | qedf_update_link_speed(qedf, link); |
599 | |
600 | if (atomic_read(v: &qedf->dcbx) == QEDF_DCBX_DONE || |
601 | qedf_dcbx_no_wait) { |
602 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
603 | "DCBx done.\n" ); |
604 | if (atomic_read(v: &qedf->link_down_tmo_valid) > 0) |
605 | queue_delayed_work(wq: qedf->link_update_wq, |
606 | dwork: &qedf->link_recovery, delay: 0); |
607 | else |
608 | queue_delayed_work(wq: qedf->link_update_wq, |
609 | dwork: &qedf->link_update, delay: 0); |
610 | atomic_set(v: &qedf->link_down_tmo_valid, i: 0); |
611 | } |
612 | |
613 | } else { |
614 | QEDF_ERR(&(qedf->dbg_ctx), "LINK DOWN.\n" ); |
615 | |
616 | atomic_set(v: &qedf->link_state, QEDF_LINK_DOWN); |
617 | atomic_set(v: &qedf->dcbx, QEDF_DCBX_PENDING); |
618 | /* |
619 | * Flag that we're waiting for the link to come back up before |
620 | * informing the fcoe layer of the event. |
621 | */ |
622 | if (qedf_link_down_tmo > 0) { |
623 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
624 | "Starting link down tmo.\n" ); |
625 | atomic_set(v: &qedf->link_down_tmo_valid, i: 1); |
626 | } |
627 | qedf->vlan_id = 0; |
628 | qedf_update_link_speed(qedf, link); |
629 | queue_delayed_work(wq: qedf->link_update_wq, dwork: &qedf->link_update, |
630 | delay: qedf_link_down_tmo * HZ); |
631 | } |
632 | } |
633 | |
634 | |
635 | static void qedf_dcbx_handler(void *dev, struct qed_dcbx_get *get, u32 mib_type) |
636 | { |
637 | struct qedf_ctx *qedf = (struct qedf_ctx *)dev; |
638 | u8 tmp_prio; |
639 | |
640 | QEDF_ERR(&(qedf->dbg_ctx), "DCBx event valid=%d enabled=%d fcoe " |
641 | "prio=%d.\n" , get->operational.valid, get->operational.enabled, |
642 | get->operational.app_prio.fcoe); |
643 | |
644 | if (get->operational.enabled && get->operational.valid) { |
645 | /* If DCBX was already negotiated on link up then just exit */ |
646 | if (atomic_read(v: &qedf->dcbx) == QEDF_DCBX_DONE) { |
647 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
648 | "DCBX already set on link up.\n" ); |
649 | return; |
650 | } |
651 | |
652 | atomic_set(v: &qedf->dcbx, QEDF_DCBX_DONE); |
653 | |
654 | /* |
655 | * Set the 8021q priority in the following manner: |
656 | * |
657 | * 1. If a modparam is set use that |
658 | * 2. If the value is not between 0..7 use the default |
659 | * 3. Use the priority we get from the DCBX app tag |
660 | */ |
661 | tmp_prio = get->operational.app_prio.fcoe; |
662 | if (qedf_default_prio > -1) |
663 | qedf->prio = qedf_default_prio; |
664 | else if (tmp_prio > 7) { |
665 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
666 | "FIP/FCoE prio %d out of range, setting to %d.\n" , |
667 | tmp_prio, QEDF_DEFAULT_PRIO); |
668 | qedf->prio = QEDF_DEFAULT_PRIO; |
669 | } else |
670 | qedf->prio = tmp_prio; |
671 | |
672 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_UP && |
673 | !qedf_dcbx_no_wait) { |
674 | if (atomic_read(v: &qedf->link_down_tmo_valid) > 0) |
675 | queue_delayed_work(wq: qedf->link_update_wq, |
676 | dwork: &qedf->link_recovery, delay: 0); |
677 | else |
678 | queue_delayed_work(wq: qedf->link_update_wq, |
679 | dwork: &qedf->link_update, delay: 0); |
680 | atomic_set(v: &qedf->link_down_tmo_valid, i: 0); |
681 | } |
682 | } |
683 | |
684 | } |
685 | |
686 | static u32 qedf_get_login_failures(void *cookie) |
687 | { |
688 | struct qedf_ctx *qedf; |
689 | |
690 | qedf = (struct qedf_ctx *)cookie; |
691 | return qedf->flogi_failed; |
692 | } |
693 | |
694 | static struct qed_fcoe_cb_ops qedf_cb_ops = { |
695 | { |
696 | .link_update = qedf_link_update, |
697 | .bw_update = qedf_bw_update, |
698 | .schedule_recovery_handler = qedf_schedule_recovery_handler, |
699 | .dcbx_aen = qedf_dcbx_handler, |
700 | .get_generic_tlv_data = qedf_get_generic_tlv_data, |
701 | .get_protocol_tlv_data = qedf_get_protocol_tlv_data, |
702 | .schedule_hw_err_handler = qedf_schedule_hw_err_handler, |
703 | } |
704 | }; |
705 | |
706 | /* |
707 | * Various transport templates. |
708 | */ |
709 | |
710 | static struct scsi_transport_template *qedf_fc_transport_template; |
711 | static struct scsi_transport_template *qedf_fc_vport_transport_template; |
712 | |
713 | /* |
714 | * SCSI EH handlers |
715 | */ |
716 | static int qedf_eh_abort(struct scsi_cmnd *sc_cmd) |
717 | { |
718 | struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); |
719 | struct fc_lport *lport; |
720 | struct qedf_ctx *qedf; |
721 | struct qedf_ioreq *io_req; |
722 | struct fc_rport_libfc_priv *rp = rport->dd_data; |
723 | struct fc_rport_priv *rdata; |
724 | struct qedf_rport *fcport = NULL; |
725 | int rc = FAILED; |
726 | int wait_count = 100; |
727 | int refcount = 0; |
728 | int rval; |
729 | int got_ref = 0; |
730 | |
731 | lport = shost_priv(shost: sc_cmd->device->host); |
732 | qedf = (struct qedf_ctx *)lport_priv(lport); |
733 | |
734 | /* rport and tgt are allocated together, so tgt should be non-NULL */ |
735 | fcport = (struct qedf_rport *)&rp[1]; |
736 | rdata = fcport->rdata; |
737 | if (!rdata || !kref_get_unless_zero(kref: &rdata->kref)) { |
738 | QEDF_ERR(&qedf->dbg_ctx, "stale rport, sc_cmd=%p\n" , sc_cmd); |
739 | rc = SUCCESS; |
740 | goto out; |
741 | } |
742 | |
743 | |
744 | io_req = qedf_priv(cmd: sc_cmd)->io_req; |
745 | if (!io_req) { |
746 | QEDF_ERR(&qedf->dbg_ctx, |
747 | "sc_cmd not queued with lld, sc_cmd=%p op=0x%02x, port_id=%06x\n" , |
748 | sc_cmd, sc_cmd->cmnd[0], |
749 | rdata->ids.port_id); |
750 | rc = SUCCESS; |
751 | goto drop_rdata_kref; |
752 | } |
753 | |
754 | rval = kref_get_unless_zero(kref: &io_req->refcount); /* ID: 005 */ |
755 | if (rval) |
756 | got_ref = 1; |
757 | |
758 | /* If we got a valid io_req, confirm it belongs to this sc_cmd. */ |
759 | if (!rval || io_req->sc_cmd != sc_cmd) { |
760 | QEDF_ERR(&qedf->dbg_ctx, |
761 | "Freed/Incorrect io_req, io_req->sc_cmd=%p, sc_cmd=%p, port_id=%06x, bailing out.\n" , |
762 | io_req->sc_cmd, sc_cmd, rdata->ids.port_id); |
763 | |
764 | goto drop_rdata_kref; |
765 | } |
766 | |
767 | if (fc_remote_port_chkready(rport)) { |
768 | refcount = kref_read(kref: &io_req->refcount); |
769 | QEDF_ERR(&qedf->dbg_ctx, |
770 | "rport not ready, io_req=%p, xid=0x%x sc_cmd=%p op=0x%02x, refcount=%d, port_id=%06x\n" , |
771 | io_req, io_req->xid, sc_cmd, sc_cmd->cmnd[0], |
772 | refcount, rdata->ids.port_id); |
773 | |
774 | goto drop_rdata_kref; |
775 | } |
776 | |
777 | rc = fc_block_rport(rport); |
778 | if (rc) |
779 | goto drop_rdata_kref; |
780 | |
781 | if (test_bit(QEDF_RPORT_UPLOADING_CONNECTION, &fcport->flags)) { |
782 | QEDF_ERR(&qedf->dbg_ctx, |
783 | "Connection uploading, xid=0x%x., port_id=%06x\n" , |
784 | io_req->xid, rdata->ids.port_id); |
785 | while (io_req->sc_cmd && (wait_count != 0)) { |
786 | msleep(msecs: 100); |
787 | wait_count--; |
788 | } |
789 | if (wait_count) { |
790 | QEDF_ERR(&qedf->dbg_ctx, "ABTS succeeded\n" ); |
791 | rc = SUCCESS; |
792 | } else { |
793 | QEDF_ERR(&qedf->dbg_ctx, "ABTS failed\n" ); |
794 | rc = FAILED; |
795 | } |
796 | goto drop_rdata_kref; |
797 | } |
798 | |
799 | if (lport->state != LPORT_ST_READY || !(lport->link_up)) { |
800 | QEDF_ERR(&qedf->dbg_ctx, "link not ready.\n" ); |
801 | goto drop_rdata_kref; |
802 | } |
803 | |
804 | QEDF_ERR(&qedf->dbg_ctx, |
805 | "Aborting io_req=%p sc_cmd=%p xid=0x%x fp_idx=%d, port_id=%06x.\n" , |
806 | io_req, sc_cmd, io_req->xid, io_req->fp_idx, |
807 | rdata->ids.port_id); |
808 | |
809 | if (qedf->stop_io_on_error) { |
810 | qedf_stop_all_io(qedf); |
811 | rc = SUCCESS; |
812 | goto drop_rdata_kref; |
813 | } |
814 | |
815 | init_completion(x: &io_req->abts_done); |
816 | rval = qedf_initiate_abts(io_req, return_scsi_cmd_on_abts: true); |
817 | if (rval) { |
818 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to queue ABTS.\n" ); |
819 | /* |
820 | * If we fail to queue the ABTS then return this command to |
821 | * the SCSI layer as it will own and free the xid |
822 | */ |
823 | rc = SUCCESS; |
824 | qedf_scsi_done(qedf, io_req, result: DID_ERROR); |
825 | goto drop_rdata_kref; |
826 | } |
827 | |
828 | wait_for_completion(&io_req->abts_done); |
829 | |
830 | if (io_req->event == QEDF_IOREQ_EV_ABORT_SUCCESS || |
831 | io_req->event == QEDF_IOREQ_EV_ABORT_FAILED || |
832 | io_req->event == QEDF_IOREQ_EV_CLEANUP_SUCCESS) { |
833 | /* |
834 | * If we get a reponse to the abort this is success from |
835 | * the perspective that all references to the command have |
836 | * been removed from the driver and firmware |
837 | */ |
838 | rc = SUCCESS; |
839 | } else { |
840 | /* If the abort and cleanup failed then return a failure */ |
841 | rc = FAILED; |
842 | } |
843 | |
844 | if (rc == SUCCESS) |
845 | QEDF_ERR(&(qedf->dbg_ctx), "ABTS succeeded, xid=0x%x.\n" , |
846 | io_req->xid); |
847 | else |
848 | QEDF_ERR(&(qedf->dbg_ctx), "ABTS failed, xid=0x%x.\n" , |
849 | io_req->xid); |
850 | |
851 | drop_rdata_kref: |
852 | kref_put(kref: &rdata->kref, release: fc_rport_destroy); |
853 | out: |
854 | if (got_ref) |
855 | kref_put(kref: &io_req->refcount, release: qedf_release_cmd); |
856 | return rc; |
857 | } |
858 | |
859 | static int qedf_eh_target_reset(struct scsi_cmnd *sc_cmd) |
860 | { |
861 | struct scsi_target *starget = scsi_target(sdev: sc_cmd->device); |
862 | struct fc_rport *rport = starget_to_rport(starget); |
863 | |
864 | QEDF_ERR(NULL, "TARGET RESET Issued..." ); |
865 | return qedf_initiate_tmf(rport, lun: 0, FCP_TMF_TGT_RESET); |
866 | } |
867 | |
868 | static int qedf_eh_device_reset(struct scsi_cmnd *sc_cmd) |
869 | { |
870 | struct fc_rport *rport = starget_to_rport(scsi_target(sc_cmd->device)); |
871 | |
872 | QEDF_ERR(NULL, "LUN RESET Issued...\n" ); |
873 | return qedf_initiate_tmf(rport, lun: sc_cmd->device->lun, FCP_TMF_LUN_RESET); |
874 | } |
875 | |
876 | bool qedf_wait_for_upload(struct qedf_ctx *qedf) |
877 | { |
878 | struct qedf_rport *fcport; |
879 | int wait_cnt = 120; |
880 | |
881 | while (wait_cnt--) { |
882 | if (atomic_read(v: &qedf->num_offloads)) |
883 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
884 | "Waiting for all uploads to complete num_offloads = 0x%x.\n" , |
885 | atomic_read(&qedf->num_offloads)); |
886 | else |
887 | return true; |
888 | msleep(msecs: 500); |
889 | } |
890 | |
891 | rcu_read_lock(); |
892 | list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { |
893 | if (test_bit(QEDF_RPORT_SESSION_READY, |
894 | &fcport->flags)) { |
895 | if (fcport->rdata) |
896 | QEDF_ERR(&qedf->dbg_ctx, |
897 | "Waiting for fcport %p portid=%06x.\n" , |
898 | fcport, fcport->rdata->ids.port_id); |
899 | } else { |
900 | QEDF_ERR(&qedf->dbg_ctx, |
901 | "Waiting for fcport %p.\n" , fcport); |
902 | } |
903 | } |
904 | |
905 | rcu_read_unlock(); |
906 | return false; |
907 | } |
908 | |
909 | /* Performs soft reset of qedf_ctx by simulating a link down/up */ |
910 | void qedf_ctx_soft_reset(struct fc_lport *lport) |
911 | { |
912 | struct qedf_ctx *qedf; |
913 | struct qed_link_output if_link; |
914 | |
915 | if (lport->vport) { |
916 | printk_ratelimited("Cannot issue host reset on NPIV port.\n" ); |
917 | return; |
918 | } |
919 | |
920 | qedf = lport_priv(lport); |
921 | |
922 | qedf->flogi_pending = 0; |
923 | /* For host reset, essentially do a soft link up/down */ |
924 | atomic_set(v: &qedf->link_state, QEDF_LINK_DOWN); |
925 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
926 | "Queuing link down work.\n" ); |
927 | queue_delayed_work(wq: qedf->link_update_wq, dwork: &qedf->link_update, |
928 | delay: 0); |
929 | |
930 | if (qedf_wait_for_upload(qedf) == false) { |
931 | QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n" ); |
932 | WARN_ON(atomic_read(&qedf->num_offloads)); |
933 | } |
934 | |
935 | /* Before setting link up query physical link state */ |
936 | qed_ops->common->get_link(qedf->cdev, &if_link); |
937 | /* Bail if the physical link is not up */ |
938 | if (!if_link.link_up) { |
939 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
940 | "Physical link is not up.\n" ); |
941 | return; |
942 | } |
943 | /* Flush and wait to make sure link down is processed */ |
944 | flush_delayed_work(dwork: &qedf->link_update); |
945 | msleep(msecs: 500); |
946 | |
947 | atomic_set(v: &qedf->link_state, QEDF_LINK_UP); |
948 | qedf->vlan_id = 0; |
949 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
950 | "Queue link up work.\n" ); |
951 | queue_delayed_work(wq: qedf->link_update_wq, dwork: &qedf->link_update, |
952 | delay: 0); |
953 | } |
954 | |
955 | /* Reset the host by gracefully logging out and then logging back in */ |
956 | static int qedf_eh_host_reset(struct scsi_cmnd *sc_cmd) |
957 | { |
958 | struct fc_lport *lport; |
959 | struct qedf_ctx *qedf; |
960 | |
961 | lport = shost_priv(shost: sc_cmd->device->host); |
962 | qedf = lport_priv(lport); |
963 | |
964 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_DOWN || |
965 | test_bit(QEDF_UNLOADING, &qedf->flags)) |
966 | return FAILED; |
967 | |
968 | QEDF_ERR(&(qedf->dbg_ctx), "HOST RESET Issued..." ); |
969 | |
970 | qedf_ctx_soft_reset(lport); |
971 | |
972 | return SUCCESS; |
973 | } |
974 | |
975 | static int qedf_slave_configure(struct scsi_device *sdev) |
976 | { |
977 | if (qedf_queue_depth) { |
978 | scsi_change_queue_depth(sdev, qedf_queue_depth); |
979 | } |
980 | |
981 | return 0; |
982 | } |
983 | |
984 | static const struct scsi_host_template qedf_host_template = { |
985 | .module = THIS_MODULE, |
986 | .name = QEDF_MODULE_NAME, |
987 | .this_id = -1, |
988 | .cmd_per_lun = 32, |
989 | .max_sectors = 0xffff, |
990 | .queuecommand = qedf_queuecommand, |
991 | .shost_groups = qedf_host_groups, |
992 | .eh_abort_handler = qedf_eh_abort, |
993 | .eh_device_reset_handler = qedf_eh_device_reset, /* lun reset */ |
994 | .eh_target_reset_handler = qedf_eh_target_reset, /* target reset */ |
995 | .eh_host_reset_handler = qedf_eh_host_reset, |
996 | .slave_configure = qedf_slave_configure, |
997 | .dma_boundary = QED_HW_DMA_BOUNDARY, |
998 | .sg_tablesize = QEDF_MAX_BDS_PER_CMD, |
999 | .can_queue = FCOE_PARAMS_NUM_TASKS, |
1000 | .change_queue_depth = scsi_change_queue_depth, |
1001 | .cmd_size = sizeof(struct qedf_cmd_priv), |
1002 | }; |
1003 | |
1004 | static int qedf_get_paged_crc_eof(struct sk_buff *skb, int tlen) |
1005 | { |
1006 | int rc; |
1007 | |
1008 | spin_lock(lock: &qedf_global_lock); |
1009 | rc = fcoe_get_paged_crc_eof(skb, tlen, fps: &qedf_global); |
1010 | spin_unlock(lock: &qedf_global_lock); |
1011 | |
1012 | return rc; |
1013 | } |
1014 | |
1015 | static struct qedf_rport *qedf_fcport_lookup(struct qedf_ctx *qedf, u32 port_id) |
1016 | { |
1017 | struct qedf_rport *fcport; |
1018 | struct fc_rport_priv *rdata; |
1019 | |
1020 | rcu_read_lock(); |
1021 | list_for_each_entry_rcu(fcport, &qedf->fcports, peers) { |
1022 | rdata = fcport->rdata; |
1023 | if (rdata == NULL) |
1024 | continue; |
1025 | if (rdata->ids.port_id == port_id) { |
1026 | rcu_read_unlock(); |
1027 | return fcport; |
1028 | } |
1029 | } |
1030 | rcu_read_unlock(); |
1031 | |
1032 | /* Return NULL to caller to let them know fcport was not found */ |
1033 | return NULL; |
1034 | } |
1035 | |
1036 | /* Transmits an ELS frame over an offloaded session */ |
1037 | static int qedf_xmit_l2_frame(struct qedf_rport *fcport, struct fc_frame *fp) |
1038 | { |
1039 | struct fc_frame_header *fh; |
1040 | int rc = 0; |
1041 | |
1042 | fh = fc_frame_header_get(fp); |
1043 | if ((fh->fh_type == FC_TYPE_ELS) && |
1044 | (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { |
1045 | switch (fc_frame_payload_op(fp)) { |
1046 | case ELS_ADISC: |
1047 | qedf_send_adisc(fcport, fp); |
1048 | rc = 1; |
1049 | break; |
1050 | } |
1051 | } |
1052 | |
1053 | return rc; |
1054 | } |
1055 | |
1056 | /* |
1057 | * qedf_xmit - qedf FCoE frame transmit function |
1058 | */ |
1059 | static int qedf_xmit(struct fc_lport *lport, struct fc_frame *fp) |
1060 | { |
1061 | struct fc_lport *base_lport; |
1062 | struct qedf_ctx *qedf; |
1063 | struct ethhdr *eh; |
1064 | struct fcoe_crc_eof *cp; |
1065 | struct sk_buff *skb; |
1066 | struct fc_frame_header *fh; |
1067 | struct fcoe_hdr *hp; |
1068 | u8 sof, eof; |
1069 | u32 crc; |
1070 | unsigned int hlen, tlen, elen; |
1071 | int wlen; |
1072 | struct fc_lport *tmp_lport; |
1073 | struct fc_lport *vn_port = NULL; |
1074 | struct qedf_rport *fcport; |
1075 | int rc; |
1076 | u16 vlan_tci = 0; |
1077 | |
1078 | qedf = (struct qedf_ctx *)lport_priv(lport); |
1079 | |
1080 | fh = fc_frame_header_get(fp); |
1081 | skb = fp_skb(fp); |
1082 | |
1083 | /* Filter out traffic to other NPIV ports on the same host */ |
1084 | if (lport->vport) |
1085 | base_lport = shost_priv(vport_to_shost(lport->vport)); |
1086 | else |
1087 | base_lport = lport; |
1088 | |
1089 | /* Flag if the destination is the base port */ |
1090 | if (base_lport->port_id == ntoh24(p: fh->fh_d_id)) { |
1091 | vn_port = base_lport; |
1092 | } else { |
1093 | /* Got through the list of vports attached to the base_lport |
1094 | * and see if we have a match with the destination address. |
1095 | */ |
1096 | list_for_each_entry(tmp_lport, &base_lport->vports, list) { |
1097 | if (tmp_lport->port_id == ntoh24(p: fh->fh_d_id)) { |
1098 | vn_port = tmp_lport; |
1099 | break; |
1100 | } |
1101 | } |
1102 | } |
1103 | if (vn_port && ntoh24(p: fh->fh_d_id) != FC_FID_FLOGI) { |
1104 | struct fc_rport_priv *rdata = NULL; |
1105 | |
1106 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
1107 | "Dropping FCoE frame to %06x.\n" , ntoh24(fh->fh_d_id)); |
1108 | kfree_skb(skb); |
1109 | rdata = fc_rport_lookup(lport, port_id: ntoh24(p: fh->fh_d_id)); |
1110 | if (rdata) { |
1111 | rdata->retries = lport->max_rport_retry_count; |
1112 | kref_put(kref: &rdata->kref, release: fc_rport_destroy); |
1113 | } |
1114 | return -EINVAL; |
1115 | } |
1116 | /* End NPIV filtering */ |
1117 | |
1118 | if (!qedf->ctlr.sel_fcf) { |
1119 | kfree_skb(skb); |
1120 | return 0; |
1121 | } |
1122 | |
1123 | if (!test_bit(QEDF_LL2_STARTED, &qedf->flags)) { |
1124 | QEDF_WARN(&(qedf->dbg_ctx), "LL2 not started\n" ); |
1125 | kfree_skb(skb); |
1126 | return 0; |
1127 | } |
1128 | |
1129 | if (atomic_read(v: &qedf->link_state) != QEDF_LINK_UP) { |
1130 | QEDF_WARN(&(qedf->dbg_ctx), "qedf link down\n" ); |
1131 | kfree_skb(skb); |
1132 | return 0; |
1133 | } |
1134 | |
1135 | if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { |
1136 | if (fcoe_ctlr_els_send(&qedf->ctlr, lport, skb)) |
1137 | return 0; |
1138 | } |
1139 | |
1140 | /* Check to see if this needs to be sent on an offloaded session */ |
1141 | fcport = qedf_fcport_lookup(qedf, port_id: ntoh24(p: fh->fh_d_id)); |
1142 | |
1143 | if (fcport && test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { |
1144 | rc = qedf_xmit_l2_frame(fcport, fp); |
1145 | /* |
1146 | * If the frame was successfully sent over the middle path |
1147 | * then do not try to also send it over the LL2 path |
1148 | */ |
1149 | if (rc) |
1150 | return 0; |
1151 | } |
1152 | |
1153 | sof = fr_sof(fp); |
1154 | eof = fr_eof(fp); |
1155 | |
1156 | elen = sizeof(struct ethhdr); |
1157 | hlen = sizeof(struct fcoe_hdr); |
1158 | tlen = sizeof(struct fcoe_crc_eof); |
1159 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; |
1160 | |
1161 | skb->ip_summed = CHECKSUM_NONE; |
1162 | crc = fcoe_fc_crc(fp); |
1163 | |
1164 | /* copy port crc and eof to the skb buff */ |
1165 | if (skb_is_nonlinear(skb)) { |
1166 | skb_frag_t *frag; |
1167 | |
1168 | if (qedf_get_paged_crc_eof(skb, tlen)) { |
1169 | kfree_skb(skb); |
1170 | return -ENOMEM; |
1171 | } |
1172 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; |
1173 | cp = kmap_atomic(page: skb_frag_page(frag)) + skb_frag_off(frag); |
1174 | } else { |
1175 | cp = skb_put(skb, len: tlen); |
1176 | } |
1177 | |
1178 | memset(cp, 0, sizeof(*cp)); |
1179 | cp->fcoe_eof = eof; |
1180 | cp->fcoe_crc32 = cpu_to_le32(~crc); |
1181 | if (skb_is_nonlinear(skb)) { |
1182 | kunmap_atomic(cp); |
1183 | cp = NULL; |
1184 | } |
1185 | |
1186 | |
1187 | /* adjust skb network/transport offsets to match mac/fcoe/port */ |
1188 | skb_push(skb, len: elen + hlen); |
1189 | skb_reset_mac_header(skb); |
1190 | skb_reset_network_header(skb); |
1191 | skb->mac_len = elen; |
1192 | skb->protocol = htons(ETH_P_FCOE); |
1193 | |
1194 | /* |
1195 | * Add VLAN tag to non-offload FCoE frame based on current stored VLAN |
1196 | * for FIP/FCoE traffic. |
1197 | */ |
1198 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci: qedf->vlan_id); |
1199 | |
1200 | /* fill up mac and fcoe headers */ |
1201 | eh = eth_hdr(skb); |
1202 | eh->h_proto = htons(ETH_P_FCOE); |
1203 | if (qedf->ctlr.map_dest) |
1204 | fc_fcoe_set_mac(mac: eh->h_dest, did: fh->fh_d_id); |
1205 | else |
1206 | /* insert GW address */ |
1207 | ether_addr_copy(dst: eh->h_dest, src: qedf->ctlr.dest_addr); |
1208 | |
1209 | /* Set the source MAC address */ |
1210 | ether_addr_copy(dst: eh->h_source, src: qedf->data_src_addr); |
1211 | |
1212 | hp = (struct fcoe_hdr *)(eh + 1); |
1213 | memset(hp, 0, sizeof(*hp)); |
1214 | if (FC_FCOE_VER) |
1215 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); |
1216 | hp->fcoe_sof = sof; |
1217 | |
1218 | /*update tx stats */ |
1219 | this_cpu_inc(lport->stats->TxFrames); |
1220 | this_cpu_add(lport->stats->TxWords, wlen); |
1221 | |
1222 | /* Get VLAN ID from skb for printing purposes */ |
1223 | __vlan_hwaccel_get_tag(skb, vlan_tci: &vlan_tci); |
1224 | |
1225 | /* send down to lld */ |
1226 | fr_dev(fp) = lport; |
1227 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame send: " |
1228 | "src=%06x dest=%06x r_ctl=%x type=%x vlan=%04x.\n" , |
1229 | ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, fh->fh_type, |
1230 | vlan_tci); |
1231 | if (qedf_dump_frames) |
1232 | print_hex_dump(KERN_WARNING, prefix_str: "fcoe: " , prefix_type: DUMP_PREFIX_OFFSET, rowsize: 16, |
1233 | groupsize: 1, buf: skb->data, len: skb->len, ascii: false); |
1234 | rc = qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); |
1235 | if (rc) { |
1236 | QEDF_ERR(&qedf->dbg_ctx, "start_xmit failed rc = %d.\n" , rc); |
1237 | kfree_skb(skb); |
1238 | return rc; |
1239 | } |
1240 | |
1241 | return 0; |
1242 | } |
1243 | |
1244 | static int qedf_alloc_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) |
1245 | { |
1246 | int rval = 0; |
1247 | u32 *pbl; |
1248 | dma_addr_t page; |
1249 | int num_pages; |
1250 | |
1251 | /* Calculate appropriate queue and PBL sizes */ |
1252 | fcport->sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); |
1253 | fcport->sq_mem_size = ALIGN(fcport->sq_mem_size, QEDF_PAGE_SIZE); |
1254 | fcport->sq_pbl_size = (fcport->sq_mem_size / QEDF_PAGE_SIZE) * |
1255 | sizeof(void *); |
1256 | fcport->sq_pbl_size = fcport->sq_pbl_size + QEDF_PAGE_SIZE; |
1257 | |
1258 | fcport->sq = dma_alloc_coherent(dev: &qedf->pdev->dev, size: fcport->sq_mem_size, |
1259 | dma_handle: &fcport->sq_dma, GFP_KERNEL); |
1260 | if (!fcport->sq) { |
1261 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue.\n" ); |
1262 | rval = 1; |
1263 | goto out; |
1264 | } |
1265 | |
1266 | fcport->sq_pbl = dma_alloc_coherent(dev: &qedf->pdev->dev, |
1267 | size: fcport->sq_pbl_size, |
1268 | dma_handle: &fcport->sq_pbl_dma, GFP_KERNEL); |
1269 | if (!fcport->sq_pbl) { |
1270 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate send queue PBL.\n" ); |
1271 | rval = 1; |
1272 | goto out_free_sq; |
1273 | } |
1274 | |
1275 | /* Create PBL */ |
1276 | num_pages = fcport->sq_mem_size / QEDF_PAGE_SIZE; |
1277 | page = fcport->sq_dma; |
1278 | pbl = (u32 *)fcport->sq_pbl; |
1279 | |
1280 | while (num_pages--) { |
1281 | *pbl = U64_LO(page); |
1282 | pbl++; |
1283 | *pbl = U64_HI(page); |
1284 | pbl++; |
1285 | page += QEDF_PAGE_SIZE; |
1286 | } |
1287 | |
1288 | return rval; |
1289 | |
1290 | out_free_sq: |
1291 | dma_free_coherent(dev: &qedf->pdev->dev, size: fcport->sq_mem_size, cpu_addr: fcport->sq, |
1292 | dma_handle: fcport->sq_dma); |
1293 | out: |
1294 | return rval; |
1295 | } |
1296 | |
1297 | static void qedf_free_sq(struct qedf_ctx *qedf, struct qedf_rport *fcport) |
1298 | { |
1299 | if (fcport->sq_pbl) |
1300 | dma_free_coherent(dev: &qedf->pdev->dev, size: fcport->sq_pbl_size, |
1301 | cpu_addr: fcport->sq_pbl, dma_handle: fcport->sq_pbl_dma); |
1302 | if (fcport->sq) |
1303 | dma_free_coherent(dev: &qedf->pdev->dev, size: fcport->sq_mem_size, |
1304 | cpu_addr: fcport->sq, dma_handle: fcport->sq_dma); |
1305 | } |
1306 | |
1307 | static int qedf_offload_connection(struct qedf_ctx *qedf, |
1308 | struct qedf_rport *fcport) |
1309 | { |
1310 | struct qed_fcoe_params_offload conn_info; |
1311 | u32 port_id; |
1312 | int rval; |
1313 | uint16_t total_sqe = (fcport->sq_mem_size / sizeof(struct fcoe_wqe)); |
1314 | |
1315 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offloading connection " |
1316 | "portid=%06x.\n" , fcport->rdata->ids.port_id); |
1317 | rval = qed_ops->acquire_conn(qedf->cdev, &fcport->handle, |
1318 | &fcport->fw_cid, &fcport->p_doorbell); |
1319 | if (rval) { |
1320 | QEDF_WARN(&(qedf->dbg_ctx), "Could not acquire connection " |
1321 | "for portid=%06x.\n" , fcport->rdata->ids.port_id); |
1322 | rval = 1; /* For some reason qed returns 0 on failure here */ |
1323 | goto out; |
1324 | } |
1325 | |
1326 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "portid=%06x " |
1327 | "fw_cid=%08x handle=%d.\n" , fcport->rdata->ids.port_id, |
1328 | fcport->fw_cid, fcport->handle); |
1329 | |
1330 | memset(&conn_info, 0, sizeof(struct qed_fcoe_params_offload)); |
1331 | |
1332 | /* Fill in the offload connection info */ |
1333 | conn_info.sq_pbl_addr = fcport->sq_pbl_dma; |
1334 | |
1335 | conn_info.sq_curr_page_addr = (dma_addr_t)(*(u64 *)fcport->sq_pbl); |
1336 | conn_info.sq_next_page_addr = |
1337 | (dma_addr_t)(*(u64 *)(fcport->sq_pbl + 8)); |
1338 | |
1339 | /* Need to use our FCoE MAC for the offload session */ |
1340 | ether_addr_copy(dst: conn_info.src_mac, src: qedf->data_src_addr); |
1341 | |
1342 | ether_addr_copy(dst: conn_info.dst_mac, src: qedf->ctlr.dest_addr); |
1343 | |
1344 | conn_info.tx_max_fc_pay_len = fcport->rdata->maxframe_size; |
1345 | conn_info.e_d_tov_timer_val = qedf->lport->e_d_tov; |
1346 | conn_info.rec_tov_timer_val = 3; /* I think this is what E3 was */ |
1347 | conn_info.rx_max_fc_pay_len = fcport->rdata->maxframe_size; |
1348 | |
1349 | /* Set VLAN data */ |
1350 | conn_info.vlan_tag = qedf->vlan_id << |
1351 | FCOE_CONN_OFFLOAD_RAMROD_DATA_VLAN_ID_SHIFT; |
1352 | conn_info.vlan_tag |= |
1353 | qedf->prio << FCOE_CONN_OFFLOAD_RAMROD_DATA_PRIORITY_SHIFT; |
1354 | conn_info.flags |= (FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_MASK << |
1355 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_VLAN_FLAG_SHIFT); |
1356 | |
1357 | /* Set host port source id */ |
1358 | port_id = fc_host_port_id(qedf->lport->host); |
1359 | fcport->sid = port_id; |
1360 | conn_info.s_id.addr_hi = (port_id & 0x000000FF); |
1361 | conn_info.s_id.addr_mid = (port_id & 0x0000FF00) >> 8; |
1362 | conn_info.s_id.addr_lo = (port_id & 0x00FF0000) >> 16; |
1363 | |
1364 | conn_info.max_conc_seqs_c3 = fcport->rdata->max_seq; |
1365 | |
1366 | /* Set remote port destination id */ |
1367 | port_id = fcport->rdata->rport->port_id; |
1368 | conn_info.d_id.addr_hi = (port_id & 0x000000FF); |
1369 | conn_info.d_id.addr_mid = (port_id & 0x0000FF00) >> 8; |
1370 | conn_info.d_id.addr_lo = (port_id & 0x00FF0000) >> 16; |
1371 | |
1372 | conn_info.def_q_idx = 0; /* Default index for send queue? */ |
1373 | |
1374 | /* Set FC-TAPE specific flags if needed */ |
1375 | if (fcport->dev_type == QEDF_RPORT_TYPE_TAPE) { |
1376 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, |
1377 | "Enable CONF, REC for portid=%06x.\n" , |
1378 | fcport->rdata->ids.port_id); |
1379 | conn_info.flags |= 1 << |
1380 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_CONF_REQ_SHIFT; |
1381 | conn_info.flags |= |
1382 | ((fcport->rdata->sp_features & FC_SP_FT_SEQC) ? 1 : 0) << |
1383 | FCOE_CONN_OFFLOAD_RAMROD_DATA_B_REC_VALID_SHIFT; |
1384 | } |
1385 | |
1386 | rval = qed_ops->offload_conn(qedf->cdev, fcport->handle, &conn_info); |
1387 | if (rval) { |
1388 | QEDF_WARN(&(qedf->dbg_ctx), "Could not offload connection " |
1389 | "for portid=%06x.\n" , fcport->rdata->ids.port_id); |
1390 | goto out_free_conn; |
1391 | } else |
1392 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Offload " |
1393 | "succeeded portid=%06x total_sqe=%d.\n" , |
1394 | fcport->rdata->ids.port_id, total_sqe); |
1395 | |
1396 | spin_lock_init(&fcport->rport_lock); |
1397 | atomic_set(v: &fcport->free_sqes, i: total_sqe); |
1398 | return 0; |
1399 | out_free_conn: |
1400 | qed_ops->release_conn(qedf->cdev, fcport->handle); |
1401 | out: |
1402 | return rval; |
1403 | } |
1404 | |
1405 | #define QEDF_TERM_BUFF_SIZE 10 |
1406 | static void qedf_upload_connection(struct qedf_ctx *qedf, |
1407 | struct qedf_rport *fcport) |
1408 | { |
1409 | void *term_params; |
1410 | dma_addr_t term_params_dma; |
1411 | |
1412 | /* Term params needs to be a DMA coherent buffer as qed shared the |
1413 | * physical DMA address with the firmware. The buffer may be used in |
1414 | * the receive path so we may eventually have to move this. |
1415 | */ |
1416 | term_params = dma_alloc_coherent(dev: &qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, |
1417 | dma_handle: &term_params_dma, GFP_KERNEL); |
1418 | if (!term_params) |
1419 | return; |
1420 | |
1421 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Uploading connection " |
1422 | "port_id=%06x.\n" , fcport->rdata->ids.port_id); |
1423 | |
1424 | qed_ops->destroy_conn(qedf->cdev, fcport->handle, term_params_dma); |
1425 | qed_ops->release_conn(qedf->cdev, fcport->handle); |
1426 | |
1427 | dma_free_coherent(dev: &qedf->pdev->dev, QEDF_TERM_BUFF_SIZE, cpu_addr: term_params, |
1428 | dma_handle: term_params_dma); |
1429 | } |
1430 | |
1431 | static void qedf_cleanup_fcport(struct qedf_ctx *qedf, |
1432 | struct qedf_rport *fcport) |
1433 | { |
1434 | struct fc_rport_priv *rdata = fcport->rdata; |
1435 | |
1436 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_CONN, "Cleaning up portid=%06x.\n" , |
1437 | fcport->rdata->ids.port_id); |
1438 | |
1439 | /* Flush any remaining i/o's before we upload the connection */ |
1440 | qedf_flush_active_ios(fcport, lun: -1); |
1441 | |
1442 | if (test_and_clear_bit(QEDF_RPORT_SESSION_READY, addr: &fcport->flags)) |
1443 | qedf_upload_connection(qedf, fcport); |
1444 | qedf_free_sq(qedf, fcport); |
1445 | fcport->rdata = NULL; |
1446 | fcport->qedf = NULL; |
1447 | kref_put(kref: &rdata->kref, release: fc_rport_destroy); |
1448 | } |
1449 | |
1450 | /* |
1451 | * This event_callback is called after successful completion of libfc |
1452 | * initiated target login. qedf can proceed with initiating the session |
1453 | * establishment. |
1454 | */ |
1455 | static void qedf_rport_event_handler(struct fc_lport *lport, |
1456 | struct fc_rport_priv *rdata, |
1457 | enum fc_rport_event event) |
1458 | { |
1459 | struct qedf_ctx *qedf = lport_priv(lport); |
1460 | struct fc_rport *rport = rdata->rport; |
1461 | struct fc_rport_libfc_priv *rp; |
1462 | struct qedf_rport *fcport; |
1463 | u32 port_id; |
1464 | int rval; |
1465 | unsigned long flags; |
1466 | |
1467 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "event = %d, " |
1468 | "port_id = 0x%x\n" , event, rdata->ids.port_id); |
1469 | |
1470 | switch (event) { |
1471 | case RPORT_EV_READY: |
1472 | if (!rport) { |
1473 | QEDF_WARN(&(qedf->dbg_ctx), "rport is NULL.\n" ); |
1474 | break; |
1475 | } |
1476 | |
1477 | rp = rport->dd_data; |
1478 | fcport = (struct qedf_rport *)&rp[1]; |
1479 | fcport->qedf = qedf; |
1480 | |
1481 | if (atomic_read(v: &qedf->num_offloads) >= QEDF_MAX_SESSIONS) { |
1482 | QEDF_ERR(&(qedf->dbg_ctx), "Not offloading " |
1483 | "portid=0x%x as max number of offloaded sessions " |
1484 | "reached.\n" , rdata->ids.port_id); |
1485 | return; |
1486 | } |
1487 | |
1488 | /* |
1489 | * Don't try to offload the session again. Can happen when we |
1490 | * get an ADISC |
1491 | */ |
1492 | if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { |
1493 | QEDF_WARN(&(qedf->dbg_ctx), "Session already " |
1494 | "offloaded, portid=0x%x.\n" , |
1495 | rdata->ids.port_id); |
1496 | return; |
1497 | } |
1498 | |
1499 | if (rport->port_id == FC_FID_DIR_SERV) { |
1500 | /* |
1501 | * qedf_rport structure doesn't exist for |
1502 | * directory server. |
1503 | * We should not come here, as lport will |
1504 | * take care of fabric login |
1505 | */ |
1506 | QEDF_WARN(&(qedf->dbg_ctx), "rport struct does not " |
1507 | "exist for dir server port_id=%x\n" , |
1508 | rdata->ids.port_id); |
1509 | break; |
1510 | } |
1511 | |
1512 | if (rdata->spp_type != FC_TYPE_FCP) { |
1513 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
1514 | "Not offloading since spp type isn't FCP\n" ); |
1515 | break; |
1516 | } |
1517 | if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { |
1518 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
1519 | "Not FCP target so not offloading\n" ); |
1520 | break; |
1521 | } |
1522 | |
1523 | /* Initial reference held on entry, so this can't fail */ |
1524 | kref_get(kref: &rdata->kref); |
1525 | fcport->rdata = rdata; |
1526 | fcport->rport = rport; |
1527 | |
1528 | rval = qedf_alloc_sq(qedf, fcport); |
1529 | if (rval) { |
1530 | qedf_cleanup_fcport(qedf, fcport); |
1531 | break; |
1532 | } |
1533 | |
1534 | /* Set device type */ |
1535 | if (rdata->flags & FC_RP_FLAGS_RETRY && |
1536 | rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET && |
1537 | !(rdata->ids.roles & FC_RPORT_ROLE_FCP_INITIATOR)) { |
1538 | fcport->dev_type = QEDF_RPORT_TYPE_TAPE; |
1539 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
1540 | "portid=%06x is a TAPE device.\n" , |
1541 | rdata->ids.port_id); |
1542 | } else { |
1543 | fcport->dev_type = QEDF_RPORT_TYPE_DISK; |
1544 | } |
1545 | |
1546 | rval = qedf_offload_connection(qedf, fcport); |
1547 | if (rval) { |
1548 | qedf_cleanup_fcport(qedf, fcport); |
1549 | break; |
1550 | } |
1551 | |
1552 | /* Add fcport to list of qedf_ctx list of offloaded ports */ |
1553 | spin_lock_irqsave(&qedf->hba_lock, flags); |
1554 | list_add_rcu(new: &fcport->peers, head: &qedf->fcports); |
1555 | spin_unlock_irqrestore(lock: &qedf->hba_lock, flags); |
1556 | |
1557 | /* |
1558 | * Set the session ready bit to let everyone know that this |
1559 | * connection is ready for I/O |
1560 | */ |
1561 | set_bit(QEDF_RPORT_SESSION_READY, addr: &fcport->flags); |
1562 | atomic_inc(v: &qedf->num_offloads); |
1563 | |
1564 | break; |
1565 | case RPORT_EV_LOGO: |
1566 | case RPORT_EV_FAILED: |
1567 | case RPORT_EV_STOP: |
1568 | port_id = rdata->ids.port_id; |
1569 | if (port_id == FC_FID_DIR_SERV) |
1570 | break; |
1571 | |
1572 | if (rdata->spp_type != FC_TYPE_FCP) { |
1573 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
1574 | "No action since spp type isn't FCP\n" ); |
1575 | break; |
1576 | } |
1577 | if (!(rdata->ids.roles & FC_RPORT_ROLE_FCP_TARGET)) { |
1578 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
1579 | "Not FCP target so no action\n" ); |
1580 | break; |
1581 | } |
1582 | |
1583 | if (!rport) { |
1584 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
1585 | "port_id=%x - rport notcreated Yet!!\n" , port_id); |
1586 | break; |
1587 | } |
1588 | rp = rport->dd_data; |
1589 | /* |
1590 | * Perform session upload. Note that rdata->peers is already |
1591 | * removed from disc->rports list before we get this event. |
1592 | */ |
1593 | fcport = (struct qedf_rport *)&rp[1]; |
1594 | |
1595 | spin_lock_irqsave(&fcport->rport_lock, flags); |
1596 | /* Only free this fcport if it is offloaded already */ |
1597 | if (test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags) && |
1598 | !test_bit(QEDF_RPORT_UPLOADING_CONNECTION, |
1599 | &fcport->flags)) { |
1600 | set_bit(QEDF_RPORT_UPLOADING_CONNECTION, |
1601 | addr: &fcport->flags); |
1602 | spin_unlock_irqrestore(lock: &fcport->rport_lock, flags); |
1603 | qedf_cleanup_fcport(qedf, fcport); |
1604 | /* |
1605 | * Remove fcport to list of qedf_ctx list of offloaded |
1606 | * ports |
1607 | */ |
1608 | spin_lock_irqsave(&qedf->hba_lock, flags); |
1609 | list_del_rcu(entry: &fcport->peers); |
1610 | spin_unlock_irqrestore(lock: &qedf->hba_lock, flags); |
1611 | |
1612 | clear_bit(QEDF_RPORT_UPLOADING_CONNECTION, |
1613 | addr: &fcport->flags); |
1614 | atomic_dec(v: &qedf->num_offloads); |
1615 | } else { |
1616 | spin_unlock_irqrestore(lock: &fcport->rport_lock, flags); |
1617 | } |
1618 | break; |
1619 | |
1620 | case RPORT_EV_NONE: |
1621 | break; |
1622 | } |
1623 | } |
1624 | |
1625 | static void qedf_abort_io(struct fc_lport *lport) |
1626 | { |
1627 | /* NO-OP but need to fill in the template */ |
1628 | } |
1629 | |
1630 | static void qedf_fcp_cleanup(struct fc_lport *lport) |
1631 | { |
1632 | /* |
1633 | * NO-OP but need to fill in template to prevent a NULL |
1634 | * function pointer dereference during link down. I/Os |
1635 | * will be flushed when port is uploaded. |
1636 | */ |
1637 | } |
1638 | |
1639 | static struct libfc_function_template qedf_lport_template = { |
1640 | .frame_send = qedf_xmit, |
1641 | .fcp_abort_io = qedf_abort_io, |
1642 | .fcp_cleanup = qedf_fcp_cleanup, |
1643 | .rport_event_callback = qedf_rport_event_handler, |
1644 | .elsct_send = qedf_elsct_send, |
1645 | }; |
1646 | |
1647 | static void qedf_fcoe_ctlr_setup(struct qedf_ctx *qedf) |
1648 | { |
1649 | fcoe_ctlr_init(&qedf->ctlr, FIP_MODE_AUTO); |
1650 | |
1651 | qedf->ctlr.send = qedf_fip_send; |
1652 | qedf->ctlr.get_src_addr = qedf_get_src_mac; |
1653 | ether_addr_copy(dst: qedf->ctlr.ctl_src_addr, src: qedf->mac); |
1654 | } |
1655 | |
1656 | static void qedf_setup_fdmi(struct qedf_ctx *qedf) |
1657 | { |
1658 | struct fc_lport *lport = qedf->lport; |
1659 | u8 buf[8]; |
1660 | int pos; |
1661 | uint32_t i; |
1662 | |
1663 | /* |
1664 | * fdmi_enabled needs to be set for libfc |
1665 | * to execute FDMI registration |
1666 | */ |
1667 | lport->fdmi_enabled = 1; |
1668 | |
1669 | /* |
1670 | * Setup the necessary fc_host attributes to that will be used to fill |
1671 | * in the FDMI information. |
1672 | */ |
1673 | |
1674 | /* Get the PCI-e Device Serial Number Capability */ |
1675 | pos = pci_find_ext_capability(dev: qedf->pdev, PCI_EXT_CAP_ID_DSN); |
1676 | if (pos) { |
1677 | pos += 4; |
1678 | for (i = 0; i < 8; i++) |
1679 | pci_read_config_byte(dev: qedf->pdev, where: pos + i, val: &buf[i]); |
1680 | |
1681 | snprintf(fc_host_serial_number(lport->host), |
1682 | FC_SERIAL_NUMBER_SIZE, |
1683 | fmt: "%02X%02X%02X%02X%02X%02X%02X%02X" , |
1684 | buf[7], buf[6], buf[5], buf[4], |
1685 | buf[3], buf[2], buf[1], buf[0]); |
1686 | } else |
1687 | snprintf(fc_host_serial_number(lport->host), |
1688 | FC_SERIAL_NUMBER_SIZE, fmt: "Unknown" ); |
1689 | |
1690 | snprintf(fc_host_manufacturer(lport->host), |
1691 | FC_SERIAL_NUMBER_SIZE, fmt: "%s" , "Marvell Semiconductor Inc." ); |
1692 | |
1693 | if (qedf->pdev->device == QL45xxx) { |
1694 | snprintf(fc_host_model(lport->host), |
1695 | FC_SYMBOLIC_NAME_SIZE, fmt: "%s" , "QL45xxx" ); |
1696 | |
1697 | snprintf(fc_host_model_description(lport->host), |
1698 | FC_SYMBOLIC_NAME_SIZE, fmt: "%s" , |
1699 | "Marvell FastLinQ QL45xxx FCoE Adapter" ); |
1700 | } |
1701 | |
1702 | if (qedf->pdev->device == QL41xxx) { |
1703 | snprintf(fc_host_model(lport->host), |
1704 | FC_SYMBOLIC_NAME_SIZE, fmt: "%s" , "QL41xxx" ); |
1705 | |
1706 | snprintf(fc_host_model_description(lport->host), |
1707 | FC_SYMBOLIC_NAME_SIZE, fmt: "%s" , |
1708 | "Marvell FastLinQ QL41xxx FCoE Adapter" ); |
1709 | } |
1710 | |
1711 | snprintf(fc_host_hardware_version(lport->host), |
1712 | FC_VERSION_STRING_SIZE, fmt: "Rev %d" , qedf->pdev->revision); |
1713 | |
1714 | snprintf(fc_host_driver_version(lport->host), |
1715 | FC_VERSION_STRING_SIZE, fmt: "%s" , QEDF_VERSION); |
1716 | |
1717 | snprintf(fc_host_firmware_version(lport->host), |
1718 | FC_VERSION_STRING_SIZE, fmt: "%d.%d.%d.%d" , |
1719 | FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, |
1720 | FW_ENGINEERING_VERSION); |
1721 | |
1722 | snprintf(fc_host_vendor_identifier(lport->host), |
1723 | FC_VENDOR_IDENTIFIER, fmt: "%s" , "Marvell" ); |
1724 | |
1725 | } |
1726 | |
1727 | static int qedf_lport_setup(struct qedf_ctx *qedf) |
1728 | { |
1729 | struct fc_lport *lport = qedf->lport; |
1730 | |
1731 | lport->link_up = 0; |
1732 | lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; |
1733 | lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; |
1734 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | |
1735 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); |
1736 | lport->boot_time = jiffies; |
1737 | lport->e_d_tov = 2 * 1000; |
1738 | lport->r_a_tov = 10 * 1000; |
1739 | |
1740 | /* Set NPIV support */ |
1741 | lport->does_npiv = 1; |
1742 | fc_host_max_npiv_vports(lport->host) = QEDF_MAX_NPIV; |
1743 | |
1744 | fc_set_wwnn(lport, wwnn: qedf->wwnn); |
1745 | fc_set_wwpn(lport, wwpn: qedf->wwpn); |
1746 | |
1747 | if (fcoe_libfc_config(lport, &qedf->ctlr, &qedf_lport_template, init_fcp: 0)) { |
1748 | QEDF_ERR(&qedf->dbg_ctx, |
1749 | "fcoe_libfc_config failed.\n" ); |
1750 | return -ENOMEM; |
1751 | } |
1752 | |
1753 | /* Allocate the exchange manager */ |
1754 | fc_exch_mgr_alloc(lport, class: FC_CLASS_3, FCOE_PARAMS_NUM_TASKS, |
1755 | max_xid: 0xfffe, NULL); |
1756 | |
1757 | if (fc_lport_init_stats(lport)) |
1758 | return -ENOMEM; |
1759 | |
1760 | /* Finish lport config */ |
1761 | fc_lport_config(lport); |
1762 | |
1763 | /* Set max frame size */ |
1764 | fc_set_mfs(lport, QEDF_MFS); |
1765 | fc_host_maxframe_size(lport->host) = lport->mfs; |
1766 | |
1767 | /* Set default dev_loss_tmo based on module parameter */ |
1768 | fc_host_dev_loss_tmo(lport->host) = qedf_dev_loss_tmo; |
1769 | |
1770 | /* Set symbolic node name */ |
1771 | if (qedf->pdev->device == QL45xxx) |
1772 | snprintf(fc_host_symbolic_name(lport->host), size: 256, |
1773 | fmt: "Marvell FastLinQ 45xxx FCoE v%s" , QEDF_VERSION); |
1774 | |
1775 | if (qedf->pdev->device == QL41xxx) |
1776 | snprintf(fc_host_symbolic_name(lport->host), size: 256, |
1777 | fmt: "Marvell FastLinQ 41xxx FCoE v%s" , QEDF_VERSION); |
1778 | |
1779 | qedf_setup_fdmi(qedf); |
1780 | |
1781 | return 0; |
1782 | } |
1783 | |
1784 | /* |
1785 | * NPIV functions |
1786 | */ |
1787 | |
1788 | static int qedf_vport_libfc_config(struct fc_vport *vport, |
1789 | struct fc_lport *lport) |
1790 | { |
1791 | lport->link_up = 0; |
1792 | lport->qfull = 0; |
1793 | lport->max_retry_count = QEDF_FLOGI_RETRY_CNT; |
1794 | lport->max_rport_retry_count = QEDF_RPORT_RETRY_CNT; |
1795 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | |
1796 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); |
1797 | lport->boot_time = jiffies; |
1798 | lport->e_d_tov = 2 * 1000; |
1799 | lport->r_a_tov = 10 * 1000; |
1800 | lport->does_npiv = 1; /* Temporary until we add NPIV support */ |
1801 | |
1802 | /* Allocate stats for vport */ |
1803 | if (fc_lport_init_stats(lport)) |
1804 | return -ENOMEM; |
1805 | |
1806 | /* Finish lport config */ |
1807 | fc_lport_config(lport); |
1808 | |
1809 | /* offload related configuration */ |
1810 | lport->crc_offload = 0; |
1811 | lport->seq_offload = 0; |
1812 | lport->lro_enabled = 0; |
1813 | lport->lro_xid = 0; |
1814 | lport->lso_max = 0; |
1815 | |
1816 | return 0; |
1817 | } |
1818 | |
1819 | static int qedf_vport_create(struct fc_vport *vport, bool disabled) |
1820 | { |
1821 | struct Scsi_Host *shost = vport_to_shost(vport); |
1822 | struct fc_lport *n_port = shost_priv(shost); |
1823 | struct fc_lport *vn_port; |
1824 | struct qedf_ctx *base_qedf = lport_priv(lport: n_port); |
1825 | struct qedf_ctx *vport_qedf; |
1826 | |
1827 | char buf[32]; |
1828 | int rc = 0; |
1829 | |
1830 | rc = fcoe_validate_vport_create(vport); |
1831 | if (rc) { |
1832 | fcoe_wwn_to_str(wwn: vport->port_name, buf, len: sizeof(buf)); |
1833 | QEDF_WARN(&(base_qedf->dbg_ctx), "Failed to create vport, " |
1834 | "WWPN (0x%s) already exists.\n" , buf); |
1835 | return rc; |
1836 | } |
1837 | |
1838 | if (atomic_read(v: &base_qedf->link_state) != QEDF_LINK_UP) { |
1839 | QEDF_WARN(&(base_qedf->dbg_ctx), "Cannot create vport " |
1840 | "because link is not up.\n" ); |
1841 | return -EIO; |
1842 | } |
1843 | |
1844 | vn_port = libfc_vport_create(vport, privsize: sizeof(struct qedf_ctx)); |
1845 | if (!vn_port) { |
1846 | QEDF_WARN(&(base_qedf->dbg_ctx), "Could not create lport " |
1847 | "for vport.\n" ); |
1848 | return -ENOMEM; |
1849 | } |
1850 | |
1851 | fcoe_wwn_to_str(wwn: vport->port_name, buf, len: sizeof(buf)); |
1852 | QEDF_ERR(&(base_qedf->dbg_ctx), "Creating NPIV port, WWPN=%s.\n" , |
1853 | buf); |
1854 | |
1855 | /* Copy some fields from base_qedf */ |
1856 | vport_qedf = lport_priv(lport: vn_port); |
1857 | memcpy(vport_qedf, base_qedf, sizeof(struct qedf_ctx)); |
1858 | |
1859 | /* Set qedf data specific to this vport */ |
1860 | vport_qedf->lport = vn_port; |
1861 | /* Use same hba_lock as base_qedf */ |
1862 | vport_qedf->hba_lock = base_qedf->hba_lock; |
1863 | vport_qedf->pdev = base_qedf->pdev; |
1864 | vport_qedf->cmd_mgr = base_qedf->cmd_mgr; |
1865 | init_completion(x: &vport_qedf->flogi_compl); |
1866 | INIT_LIST_HEAD(list: &vport_qedf->fcports); |
1867 | INIT_DELAYED_WORK(&vport_qedf->stag_work, qedf_stag_change_work); |
1868 | |
1869 | rc = qedf_vport_libfc_config(vport, lport: vn_port); |
1870 | if (rc) { |
1871 | QEDF_ERR(&(base_qedf->dbg_ctx), "Could not allocate memory " |
1872 | "for lport stats.\n" ); |
1873 | goto err; |
1874 | } |
1875 | |
1876 | fc_set_wwnn(lport: vn_port, wwnn: vport->node_name); |
1877 | fc_set_wwpn(lport: vn_port, wwpn: vport->port_name); |
1878 | vport_qedf->wwnn = vn_port->wwnn; |
1879 | vport_qedf->wwpn = vn_port->wwpn; |
1880 | |
1881 | vn_port->host->transportt = qedf_fc_vport_transport_template; |
1882 | vn_port->host->can_queue = FCOE_PARAMS_NUM_TASKS; |
1883 | vn_port->host->max_lun = qedf_max_lun; |
1884 | vn_port->host->sg_tablesize = QEDF_MAX_BDS_PER_CMD; |
1885 | vn_port->host->max_cmd_len = QEDF_MAX_CDB_LEN; |
1886 | vn_port->host->max_id = QEDF_MAX_SESSIONS; |
1887 | |
1888 | rc = scsi_add_host(host: vn_port->host, dev: &vport->dev); |
1889 | if (rc) { |
1890 | QEDF_WARN(&base_qedf->dbg_ctx, |
1891 | "Error adding Scsi_Host rc=0x%x.\n" , rc); |
1892 | goto err; |
1893 | } |
1894 | |
1895 | /* Set default dev_loss_tmo based on module parameter */ |
1896 | fc_host_dev_loss_tmo(vn_port->host) = qedf_dev_loss_tmo; |
1897 | |
1898 | /* Init libfc stuffs */ |
1899 | memcpy(&vn_port->tt, &qedf_lport_template, |
1900 | sizeof(qedf_lport_template)); |
1901 | fc_exch_init(vn_port); |
1902 | fc_elsct_init(vn_port); |
1903 | fc_lport_init(vn_port); |
1904 | fc_disc_init(vn_port); |
1905 | fc_disc_config(vn_port, vn_port); |
1906 | |
1907 | |
1908 | /* Allocate the exchange manager */ |
1909 | shost = vport_to_shost(vport); |
1910 | n_port = shost_priv(shost); |
1911 | fc_exch_mgr_list_clone(src: n_port, dst: vn_port); |
1912 | |
1913 | /* Set max frame size */ |
1914 | fc_set_mfs(vn_port, QEDF_MFS); |
1915 | |
1916 | fc_host_port_type(vn_port->host) = FC_PORTTYPE_UNKNOWN; |
1917 | |
1918 | if (disabled) { |
1919 | fc_vport_set_state(vport, new_state: FC_VPORT_DISABLED); |
1920 | } else { |
1921 | vn_port->boot_time = jiffies; |
1922 | fc_fabric_login(vn_port); |
1923 | fc_vport_setlink(vn_port); |
1924 | } |
1925 | |
1926 | /* Set symbolic node name */ |
1927 | if (base_qedf->pdev->device == QL45xxx) |
1928 | snprintf(fc_host_symbolic_name(vn_port->host), size: 256, |
1929 | fmt: "Marvell FastLinQ 45xxx FCoE v%s" , QEDF_VERSION); |
1930 | |
1931 | if (base_qedf->pdev->device == QL41xxx) |
1932 | snprintf(fc_host_symbolic_name(vn_port->host), size: 256, |
1933 | fmt: "Marvell FastLinQ 41xxx FCoE v%s" , QEDF_VERSION); |
1934 | |
1935 | /* Set supported speed */ |
1936 | fc_host_supported_speeds(vn_port->host) = n_port->link_supported_speeds; |
1937 | |
1938 | /* Set speed */ |
1939 | vn_port->link_speed = n_port->link_speed; |
1940 | |
1941 | /* Set port type */ |
1942 | fc_host_port_type(vn_port->host) = FC_PORTTYPE_NPIV; |
1943 | |
1944 | /* Set maxframe size */ |
1945 | fc_host_maxframe_size(vn_port->host) = n_port->mfs; |
1946 | |
1947 | QEDF_INFO(&(base_qedf->dbg_ctx), QEDF_LOG_NPIV, "vn_port=%p.\n" , |
1948 | vn_port); |
1949 | |
1950 | /* Set up debug context for vport */ |
1951 | vport_qedf->dbg_ctx.host_no = vn_port->host->host_no; |
1952 | vport_qedf->dbg_ctx.pdev = base_qedf->pdev; |
1953 | |
1954 | return 0; |
1955 | |
1956 | err: |
1957 | scsi_host_put(t: vn_port->host); |
1958 | return rc; |
1959 | } |
1960 | |
1961 | static int qedf_vport_destroy(struct fc_vport *vport) |
1962 | { |
1963 | struct Scsi_Host *shost = vport_to_shost(vport); |
1964 | struct fc_lport *n_port = shost_priv(shost); |
1965 | struct fc_lport *vn_port = vport->dd_data; |
1966 | struct qedf_ctx *qedf = lport_priv(lport: vn_port); |
1967 | |
1968 | if (!qedf) { |
1969 | QEDF_ERR(NULL, "qedf is NULL.\n" ); |
1970 | goto out; |
1971 | } |
1972 | |
1973 | /* Set unloading bit on vport qedf_ctx to prevent more I/O */ |
1974 | set_bit(QEDF_UNLOADING, addr: &qedf->flags); |
1975 | |
1976 | mutex_lock(&n_port->lp_mutex); |
1977 | list_del(entry: &vn_port->list); |
1978 | mutex_unlock(lock: &n_port->lp_mutex); |
1979 | |
1980 | fc_fabric_logoff(vn_port); |
1981 | fc_lport_destroy(vn_port); |
1982 | |
1983 | /* Detach from scsi-ml */ |
1984 | fc_remove_host(vn_port->host); |
1985 | scsi_remove_host(vn_port->host); |
1986 | |
1987 | /* |
1988 | * Only try to release the exchange manager if the vn_port |
1989 | * configuration is complete. |
1990 | */ |
1991 | if (vn_port->state == LPORT_ST_READY) |
1992 | fc_exch_mgr_free(vn_port); |
1993 | |
1994 | /* Free memory used by statistical counters */ |
1995 | fc_lport_free_stats(lport: vn_port); |
1996 | |
1997 | /* Release Scsi_Host */ |
1998 | scsi_host_put(t: vn_port->host); |
1999 | |
2000 | out: |
2001 | return 0; |
2002 | } |
2003 | |
2004 | static int qedf_vport_disable(struct fc_vport *vport, bool disable) |
2005 | { |
2006 | struct fc_lport *lport = vport->dd_data; |
2007 | |
2008 | if (disable) { |
2009 | fc_vport_set_state(vport, new_state: FC_VPORT_DISABLED); |
2010 | fc_fabric_logoff(lport); |
2011 | } else { |
2012 | lport->boot_time = jiffies; |
2013 | fc_fabric_login(lport); |
2014 | fc_vport_setlink(lport); |
2015 | } |
2016 | return 0; |
2017 | } |
2018 | |
2019 | /* |
2020 | * During removal we need to wait for all the vports associated with a port |
2021 | * to be destroyed so we avoid a race condition where libfc is still trying |
2022 | * to reap vports while the driver remove function has already reaped the |
2023 | * driver contexts associated with the physical port. |
2024 | */ |
2025 | static void qedf_wait_for_vport_destroy(struct qedf_ctx *qedf) |
2026 | { |
2027 | struct fc_host_attrs *fc_host = shost_to_fc_host(qedf->lport->host); |
2028 | |
2029 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, |
2030 | "Entered.\n" ); |
2031 | while (fc_host->npiv_vports_inuse > 0) { |
2032 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_NPIV, |
2033 | "Waiting for all vports to be reaped.\n" ); |
2034 | msleep(msecs: 1000); |
2035 | } |
2036 | } |
2037 | |
2038 | /** |
2039 | * qedf_fcoe_reset - Resets the fcoe |
2040 | * |
2041 | * @shost: shost the reset is from |
2042 | * |
2043 | * Returns: always 0 |
2044 | */ |
2045 | static int qedf_fcoe_reset(struct Scsi_Host *shost) |
2046 | { |
2047 | struct fc_lport *lport = shost_priv(shost); |
2048 | |
2049 | qedf_ctx_soft_reset(lport); |
2050 | return 0; |
2051 | } |
2052 | |
2053 | static void qedf_get_host_port_id(struct Scsi_Host *shost) |
2054 | { |
2055 | struct fc_lport *lport = shost_priv(shost); |
2056 | |
2057 | fc_host_port_id(shost) = lport->port_id; |
2058 | } |
2059 | |
2060 | static struct fc_host_statistics *qedf_fc_get_host_stats(struct Scsi_Host |
2061 | *shost) |
2062 | { |
2063 | struct fc_host_statistics *qedf_stats; |
2064 | struct fc_lport *lport = shost_priv(shost); |
2065 | struct qedf_ctx *qedf = lport_priv(lport); |
2066 | struct qed_fcoe_stats *fw_fcoe_stats; |
2067 | |
2068 | qedf_stats = fc_get_host_stats(shost); |
2069 | |
2070 | /* We don't collect offload stats for specific NPIV ports */ |
2071 | if (lport->vport) |
2072 | goto out; |
2073 | |
2074 | fw_fcoe_stats = kmalloc(size: sizeof(struct qed_fcoe_stats), GFP_KERNEL); |
2075 | if (!fw_fcoe_stats) { |
2076 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate memory for " |
2077 | "fw_fcoe_stats.\n" ); |
2078 | goto out; |
2079 | } |
2080 | |
2081 | mutex_lock(&qedf->stats_mutex); |
2082 | |
2083 | /* Query firmware for offload stats */ |
2084 | qed_ops->get_stats(qedf->cdev, fw_fcoe_stats); |
2085 | |
2086 | /* |
2087 | * The expectation is that we add our offload stats to the stats |
2088 | * being maintained by libfc each time the fc_get_host_status callback |
2089 | * is invoked. The additions are not carried over for each call to |
2090 | * the fc_get_host_stats callback. |
2091 | */ |
2092 | qedf_stats->tx_frames += fw_fcoe_stats->fcoe_tx_data_pkt_cnt + |
2093 | fw_fcoe_stats->fcoe_tx_xfer_pkt_cnt + |
2094 | fw_fcoe_stats->fcoe_tx_other_pkt_cnt; |
2095 | qedf_stats->rx_frames += fw_fcoe_stats->fcoe_rx_data_pkt_cnt + |
2096 | fw_fcoe_stats->fcoe_rx_xfer_pkt_cnt + |
2097 | fw_fcoe_stats->fcoe_rx_other_pkt_cnt; |
2098 | qedf_stats->fcp_input_megabytes += |
2099 | do_div(fw_fcoe_stats->fcoe_rx_byte_cnt, 1000000); |
2100 | qedf_stats->fcp_output_megabytes += |
2101 | do_div(fw_fcoe_stats->fcoe_tx_byte_cnt, 1000000); |
2102 | qedf_stats->rx_words += fw_fcoe_stats->fcoe_rx_byte_cnt / 4; |
2103 | qedf_stats->tx_words += fw_fcoe_stats->fcoe_tx_byte_cnt / 4; |
2104 | qedf_stats->invalid_crc_count += |
2105 | fw_fcoe_stats->fcoe_silent_drop_pkt_crc_error_cnt; |
2106 | qedf_stats->dumped_frames = |
2107 | fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; |
2108 | qedf_stats->error_frames += |
2109 | fw_fcoe_stats->fcoe_silent_drop_total_pkt_cnt; |
2110 | qedf_stats->fcp_input_requests += qedf->input_requests; |
2111 | qedf_stats->fcp_output_requests += qedf->output_requests; |
2112 | qedf_stats->fcp_control_requests += qedf->control_requests; |
2113 | qedf_stats->fcp_packet_aborts += qedf->packet_aborts; |
2114 | qedf_stats->fcp_frame_alloc_failures += qedf->alloc_failures; |
2115 | |
2116 | mutex_unlock(lock: &qedf->stats_mutex); |
2117 | kfree(objp: fw_fcoe_stats); |
2118 | out: |
2119 | return qedf_stats; |
2120 | } |
2121 | |
2122 | static struct fc_function_template qedf_fc_transport_fn = { |
2123 | .show_host_node_name = 1, |
2124 | .show_host_port_name = 1, |
2125 | .show_host_supported_classes = 1, |
2126 | .show_host_supported_fc4s = 1, |
2127 | .show_host_active_fc4s = 1, |
2128 | .show_host_maxframe_size = 1, |
2129 | |
2130 | .get_host_port_id = qedf_get_host_port_id, |
2131 | .show_host_port_id = 1, |
2132 | .show_host_supported_speeds = 1, |
2133 | .get_host_speed = fc_get_host_speed, |
2134 | .show_host_speed = 1, |
2135 | .show_host_port_type = 1, |
2136 | .get_host_port_state = fc_get_host_port_state, |
2137 | .show_host_port_state = 1, |
2138 | .show_host_symbolic_name = 1, |
2139 | |
2140 | /* |
2141 | * Tell FC transport to allocate enough space to store the backpointer |
2142 | * for the associate qedf_rport struct. |
2143 | */ |
2144 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + |
2145 | sizeof(struct qedf_rport)), |
2146 | .show_rport_maxframe_size = 1, |
2147 | .show_rport_supported_classes = 1, |
2148 | .show_host_fabric_name = 1, |
2149 | .show_starget_node_name = 1, |
2150 | .show_starget_port_name = 1, |
2151 | .show_starget_port_id = 1, |
2152 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, |
2153 | .show_rport_dev_loss_tmo = 1, |
2154 | .get_fc_host_stats = qedf_fc_get_host_stats, |
2155 | .issue_fc_host_lip = qedf_fcoe_reset, |
2156 | .vport_create = qedf_vport_create, |
2157 | .vport_delete = qedf_vport_destroy, |
2158 | .vport_disable = qedf_vport_disable, |
2159 | .bsg_request = fc_lport_bsg_request, |
2160 | }; |
2161 | |
2162 | static struct fc_function_template qedf_fc_vport_transport_fn = { |
2163 | .show_host_node_name = 1, |
2164 | .show_host_port_name = 1, |
2165 | .show_host_supported_classes = 1, |
2166 | .show_host_supported_fc4s = 1, |
2167 | .show_host_active_fc4s = 1, |
2168 | .show_host_maxframe_size = 1, |
2169 | .show_host_port_id = 1, |
2170 | .show_host_supported_speeds = 1, |
2171 | .get_host_speed = fc_get_host_speed, |
2172 | .show_host_speed = 1, |
2173 | .show_host_port_type = 1, |
2174 | .get_host_port_state = fc_get_host_port_state, |
2175 | .show_host_port_state = 1, |
2176 | .show_host_symbolic_name = 1, |
2177 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + |
2178 | sizeof(struct qedf_rport)), |
2179 | .show_rport_maxframe_size = 1, |
2180 | .show_rport_supported_classes = 1, |
2181 | .show_host_fabric_name = 1, |
2182 | .show_starget_node_name = 1, |
2183 | .show_starget_port_name = 1, |
2184 | .show_starget_port_id = 1, |
2185 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, |
2186 | .show_rport_dev_loss_tmo = 1, |
2187 | .get_fc_host_stats = fc_get_host_stats, |
2188 | .issue_fc_host_lip = qedf_fcoe_reset, |
2189 | .bsg_request = fc_lport_bsg_request, |
2190 | }; |
2191 | |
2192 | static bool qedf_fp_has_work(struct qedf_fastpath *fp) |
2193 | { |
2194 | struct qedf_ctx *qedf = fp->qedf; |
2195 | struct global_queue *que; |
2196 | struct qed_sb_info *sb_info = fp->sb_info; |
2197 | struct status_block *sb = sb_info->sb_virt; |
2198 | u16 prod_idx; |
2199 | |
2200 | /* Get the pointer to the global CQ this completion is on */ |
2201 | que = qedf->global_queues[fp->sb_id]; |
2202 | |
2203 | /* Be sure all responses have been written to PI */ |
2204 | rmb(); |
2205 | |
2206 | /* Get the current firmware producer index */ |
2207 | prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; |
2208 | |
2209 | return (que->cq_prod_idx != prod_idx); |
2210 | } |
2211 | |
2212 | /* |
2213 | * Interrupt handler code. |
2214 | */ |
2215 | |
2216 | /* Process completion queue and copy CQE contents for deferred processesing |
2217 | * |
2218 | * Return true if we should wake the I/O thread, false if not. |
2219 | */ |
2220 | static bool qedf_process_completions(struct qedf_fastpath *fp) |
2221 | { |
2222 | struct qedf_ctx *qedf = fp->qedf; |
2223 | struct qed_sb_info *sb_info = fp->sb_info; |
2224 | struct status_block *sb = sb_info->sb_virt; |
2225 | struct global_queue *que; |
2226 | u16 prod_idx; |
2227 | struct fcoe_cqe *cqe; |
2228 | struct qedf_io_work *io_work; |
2229 | unsigned int cpu; |
2230 | struct qedf_ioreq *io_req = NULL; |
2231 | u16 xid; |
2232 | u16 new_cqes; |
2233 | u32 comp_type; |
2234 | |
2235 | /* Get the current firmware producer index */ |
2236 | prod_idx = sb->pi_array[QEDF_FCOE_PARAMS_GL_RQ_PI]; |
2237 | |
2238 | /* Get the pointer to the global CQ this completion is on */ |
2239 | que = qedf->global_queues[fp->sb_id]; |
2240 | |
2241 | /* Calculate the amount of new elements since last processing */ |
2242 | new_cqes = (prod_idx >= que->cq_prod_idx) ? |
2243 | (prod_idx - que->cq_prod_idx) : |
2244 | 0x10000 - que->cq_prod_idx + prod_idx; |
2245 | |
2246 | /* Save producer index */ |
2247 | que->cq_prod_idx = prod_idx; |
2248 | |
2249 | while (new_cqes) { |
2250 | fp->completions++; |
2251 | cqe = &que->cq[que->cq_cons_idx]; |
2252 | |
2253 | comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & |
2254 | FCOE_CQE_CQE_TYPE_MASK; |
2255 | |
2256 | /* |
2257 | * Process unsolicited CQEs directly in the interrupt handler |
2258 | * sine we need the fastpath ID |
2259 | */ |
2260 | if (comp_type == FCOE_UNSOLIC_CQE_TYPE) { |
2261 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_UNSOL, |
2262 | "Unsolicated CQE.\n" ); |
2263 | qedf_process_unsol_compl(qedf, que_idx: fp->sb_id, cqe); |
2264 | /* |
2265 | * Don't add a work list item. Increment consumer |
2266 | * consumer index and move on. |
2267 | */ |
2268 | goto inc_idx; |
2269 | } |
2270 | |
2271 | xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; |
2272 | io_req = &qedf->cmd_mgr->cmds[xid]; |
2273 | |
2274 | /* |
2275 | * Figure out which percpu thread we should queue this I/O |
2276 | * on. |
2277 | */ |
2278 | if (!io_req) |
2279 | /* If there is not io_req assocated with this CQE |
2280 | * just queue it on CPU 0 |
2281 | */ |
2282 | cpu = 0; |
2283 | else { |
2284 | cpu = io_req->cpu; |
2285 | io_req->int_cpu = smp_processor_id(); |
2286 | } |
2287 | |
2288 | io_work = mempool_alloc(pool: qedf->io_mempool, GFP_ATOMIC); |
2289 | if (!io_work) { |
2290 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate " |
2291 | "work for I/O completion.\n" ); |
2292 | continue; |
2293 | } |
2294 | memset(io_work, 0, sizeof(struct qedf_io_work)); |
2295 | |
2296 | INIT_WORK(&io_work->work, qedf_fp_io_handler); |
2297 | |
2298 | /* Copy contents of CQE for deferred processing */ |
2299 | memcpy(&io_work->cqe, cqe, sizeof(struct fcoe_cqe)); |
2300 | |
2301 | io_work->qedf = fp->qedf; |
2302 | io_work->fp = NULL; /* Only used for unsolicited frames */ |
2303 | |
2304 | queue_work_on(cpu, wq: qedf_io_wq, work: &io_work->work); |
2305 | |
2306 | inc_idx: |
2307 | que->cq_cons_idx++; |
2308 | if (que->cq_cons_idx == fp->cq_num_entries) |
2309 | que->cq_cons_idx = 0; |
2310 | new_cqes--; |
2311 | } |
2312 | |
2313 | return true; |
2314 | } |
2315 | |
2316 | |
2317 | /* MSI-X fastpath handler code */ |
2318 | static irqreturn_t qedf_msix_handler(int irq, void *dev_id) |
2319 | { |
2320 | struct qedf_fastpath *fp = dev_id; |
2321 | |
2322 | if (!fp) { |
2323 | QEDF_ERR(NULL, "fp is null.\n" ); |
2324 | return IRQ_HANDLED; |
2325 | } |
2326 | if (!fp->sb_info) { |
2327 | QEDF_ERR(NULL, "fp->sb_info in null." ); |
2328 | return IRQ_HANDLED; |
2329 | } |
2330 | |
2331 | /* |
2332 | * Disable interrupts for this status block while we process new |
2333 | * completions |
2334 | */ |
2335 | qed_sb_ack(sb_info: fp->sb_info, int_cmd: IGU_INT_DISABLE, upd_flg: 0 /*do not update*/); |
2336 | |
2337 | while (1) { |
2338 | qedf_process_completions(fp); |
2339 | |
2340 | if (qedf_fp_has_work(fp) == 0) { |
2341 | /* Update the sb information */ |
2342 | qed_sb_update_sb_idx(sb_info: fp->sb_info); |
2343 | |
2344 | /* Check for more work */ |
2345 | rmb(); |
2346 | |
2347 | if (qedf_fp_has_work(fp) == 0) { |
2348 | /* Re-enable interrupts */ |
2349 | qed_sb_ack(sb_info: fp->sb_info, int_cmd: IGU_INT_ENABLE, upd_flg: 1); |
2350 | return IRQ_HANDLED; |
2351 | } |
2352 | } |
2353 | } |
2354 | |
2355 | /* Do we ever want to break out of above loop? */ |
2356 | return IRQ_HANDLED; |
2357 | } |
2358 | |
2359 | /* simd handler for MSI/INTa */ |
2360 | static void qedf_simd_int_handler(void *cookie) |
2361 | { |
2362 | /* Cookie is qedf_ctx struct */ |
2363 | struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; |
2364 | |
2365 | QEDF_WARN(&(qedf->dbg_ctx), "qedf=%p.\n" , qedf); |
2366 | } |
2367 | |
2368 | #define QEDF_SIMD_HANDLER_NUM 0 |
2369 | static void qedf_sync_free_irqs(struct qedf_ctx *qedf) |
2370 | { |
2371 | int i; |
2372 | u16 vector_idx = 0; |
2373 | u32 vector; |
2374 | |
2375 | if (qedf->int_info.msix_cnt) { |
2376 | for (i = 0; i < qedf->int_info.used_cnt; i++) { |
2377 | vector_idx = i * qedf->dev_info.common.num_hwfns + |
2378 | qed_ops->common->get_affin_hwfn_idx(qedf->cdev); |
2379 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
2380 | "Freeing IRQ #%d vector_idx=%d.\n" , |
2381 | i, vector_idx); |
2382 | vector = qedf->int_info.msix[vector_idx].vector; |
2383 | synchronize_irq(irq: vector); |
2384 | irq_set_affinity_hint(irq: vector, NULL); |
2385 | irq_set_affinity_notifier(irq: vector, NULL); |
2386 | free_irq(vector, &qedf->fp_array[i]); |
2387 | } |
2388 | } else |
2389 | qed_ops->common->simd_handler_clean(qedf->cdev, |
2390 | QEDF_SIMD_HANDLER_NUM); |
2391 | |
2392 | qedf->int_info.used_cnt = 0; |
2393 | qed_ops->common->set_fp_int(qedf->cdev, 0); |
2394 | } |
2395 | |
2396 | static int qedf_request_msix_irq(struct qedf_ctx *qedf) |
2397 | { |
2398 | int i, rc, cpu; |
2399 | u16 vector_idx = 0; |
2400 | u32 vector; |
2401 | |
2402 | cpu = cpumask_first(cpu_online_mask); |
2403 | for (i = 0; i < qedf->num_queues; i++) { |
2404 | vector_idx = i * qedf->dev_info.common.num_hwfns + |
2405 | qed_ops->common->get_affin_hwfn_idx(qedf->cdev); |
2406 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
2407 | "Requesting IRQ #%d vector_idx=%d.\n" , |
2408 | i, vector_idx); |
2409 | vector = qedf->int_info.msix[vector_idx].vector; |
2410 | rc = request_irq(irq: vector, handler: qedf_msix_handler, flags: 0, name: "qedf" , |
2411 | dev: &qedf->fp_array[i]); |
2412 | |
2413 | if (rc) { |
2414 | QEDF_WARN(&(qedf->dbg_ctx), "request_irq failed.\n" ); |
2415 | qedf_sync_free_irqs(qedf); |
2416 | return rc; |
2417 | } |
2418 | |
2419 | qedf->int_info.used_cnt++; |
2420 | rc = irq_set_affinity_hint(irq: vector, m: get_cpu_mask(cpu)); |
2421 | cpu = cpumask_next(n: cpu, cpu_online_mask); |
2422 | } |
2423 | |
2424 | return 0; |
2425 | } |
2426 | |
2427 | static int qedf_setup_int(struct qedf_ctx *qedf) |
2428 | { |
2429 | int rc = 0; |
2430 | |
2431 | /* |
2432 | * Learn interrupt configuration |
2433 | */ |
2434 | rc = qed_ops->common->set_fp_int(qedf->cdev, num_online_cpus()); |
2435 | if (rc <= 0) |
2436 | return 0; |
2437 | |
2438 | rc = qed_ops->common->get_fp_int(qedf->cdev, &qedf->int_info); |
2439 | if (rc) |
2440 | return 0; |
2441 | |
2442 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of msix_cnt = " |
2443 | "0x%x num of cpus = 0x%x\n" , qedf->int_info.msix_cnt, |
2444 | num_online_cpus()); |
2445 | |
2446 | if (qedf->int_info.msix_cnt) |
2447 | return qedf_request_msix_irq(qedf); |
2448 | |
2449 | qed_ops->common->simd_handler_config(qedf->cdev, &qedf, |
2450 | QEDF_SIMD_HANDLER_NUM, qedf_simd_int_handler); |
2451 | qedf->int_info.used_cnt = 1; |
2452 | |
2453 | QEDF_ERR(&qedf->dbg_ctx, |
2454 | "Cannot load driver due to a lack of MSI-X vectors.\n" ); |
2455 | return -EINVAL; |
2456 | } |
2457 | |
2458 | /* Main function for libfc frame reception */ |
2459 | static void qedf_recv_frame(struct qedf_ctx *qedf, |
2460 | struct sk_buff *skb) |
2461 | { |
2462 | u32 fr_len; |
2463 | struct fc_lport *lport; |
2464 | struct fc_frame_header *fh; |
2465 | struct fcoe_crc_eof crc_eof; |
2466 | struct fc_frame *fp; |
2467 | u8 *mac = NULL; |
2468 | u8 *dest_mac = NULL; |
2469 | struct fcoe_hdr *hp; |
2470 | struct qedf_rport *fcport; |
2471 | struct fc_lport *vn_port; |
2472 | u32 f_ctl; |
2473 | |
2474 | lport = qedf->lport; |
2475 | if (lport == NULL || lport->state == LPORT_ST_DISABLED) { |
2476 | QEDF_WARN(NULL, "Invalid lport struct or lport disabled.\n" ); |
2477 | kfree_skb(skb); |
2478 | return; |
2479 | } |
2480 | |
2481 | if (skb_is_nonlinear(skb)) |
2482 | skb_linearize(skb); |
2483 | mac = eth_hdr(skb)->h_source; |
2484 | dest_mac = eth_hdr(skb)->h_dest; |
2485 | |
2486 | /* Pull the header */ |
2487 | hp = (struct fcoe_hdr *)skb->data; |
2488 | fh = (struct fc_frame_header *) skb_transport_header(skb); |
2489 | skb_pull(skb, len: sizeof(struct fcoe_hdr)); |
2490 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); |
2491 | |
2492 | fp = (struct fc_frame *)skb; |
2493 | fc_frame_init(fp); |
2494 | fr_dev(fp) = lport; |
2495 | fr_sof(fp) = hp->fcoe_sof; |
2496 | if (skb_copy_bits(skb, offset: fr_len, to: &crc_eof, len: sizeof(crc_eof))) { |
2497 | QEDF_INFO(NULL, QEDF_LOG_LL2, "skb_copy_bits failed.\n" ); |
2498 | kfree_skb(skb); |
2499 | return; |
2500 | } |
2501 | fr_eof(fp) = crc_eof.fcoe_eof; |
2502 | fr_crc(fp) = crc_eof.fcoe_crc32; |
2503 | if (pskb_trim(skb, len: fr_len)) { |
2504 | QEDF_INFO(NULL, QEDF_LOG_LL2, "pskb_trim failed.\n" ); |
2505 | kfree_skb(skb); |
2506 | return; |
2507 | } |
2508 | |
2509 | fh = fc_frame_header_get(fp); |
2510 | |
2511 | /* |
2512 | * Invalid frame filters. |
2513 | */ |
2514 | |
2515 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && |
2516 | fh->fh_type == FC_TYPE_FCP) { |
2517 | /* Drop FCP data. We dont this in L2 path */ |
2518 | kfree_skb(skb); |
2519 | return; |
2520 | } |
2521 | if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && |
2522 | fh->fh_type == FC_TYPE_ELS) { |
2523 | switch (fc_frame_payload_op(fp)) { |
2524 | case ELS_LOGO: |
2525 | if (ntoh24(p: fh->fh_s_id) == FC_FID_FLOGI) { |
2526 | /* drop non-FIP LOGO */ |
2527 | kfree_skb(skb); |
2528 | return; |
2529 | } |
2530 | break; |
2531 | } |
2532 | } |
2533 | |
2534 | if (fh->fh_r_ctl == FC_RCTL_BA_ABTS) { |
2535 | /* Drop incoming ABTS */ |
2536 | kfree_skb(skb); |
2537 | return; |
2538 | } |
2539 | |
2540 | if (ntoh24(p: &dest_mac[3]) != ntoh24(p: fh->fh_d_id)) { |
2541 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
2542 | "FC frame d_id mismatch with MAC %pM.\n" , dest_mac); |
2543 | kfree_skb(skb); |
2544 | return; |
2545 | } |
2546 | |
2547 | if (qedf->ctlr.state) { |
2548 | if (!ether_addr_equal(addr1: mac, addr2: qedf->ctlr.dest_addr)) { |
2549 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
2550 | "Wrong source address: mac:%pM dest_addr:%pM.\n" , |
2551 | mac, qedf->ctlr.dest_addr); |
2552 | kfree_skb(skb); |
2553 | return; |
2554 | } |
2555 | } |
2556 | |
2557 | vn_port = fc_vport_id_lookup(lport, port_id: ntoh24(p: fh->fh_d_id)); |
2558 | |
2559 | /* |
2560 | * If the destination ID from the frame header does not match what we |
2561 | * have on record for lport and the search for a NPIV port came up |
2562 | * empty then this is not addressed to our port so simply drop it. |
2563 | */ |
2564 | if (lport->port_id != ntoh24(p: fh->fh_d_id) && !vn_port) { |
2565 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, |
2566 | "Dropping frame due to destination mismatch: lport->port_id=0x%x fh->d_id=0x%x.\n" , |
2567 | lport->port_id, ntoh24(fh->fh_d_id)); |
2568 | kfree_skb(skb); |
2569 | return; |
2570 | } |
2571 | |
2572 | f_ctl = ntoh24(p: fh->fh_f_ctl); |
2573 | if ((fh->fh_type == FC_TYPE_BLS) && (f_ctl & FC_FC_SEQ_CTX) && |
2574 | (f_ctl & FC_FC_EX_CTX)) { |
2575 | /* Drop incoming ABTS response that has both SEQ/EX CTX set */ |
2576 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, |
2577 | "Dropping ABTS response as both SEQ/EX CTX set.\n" ); |
2578 | kfree_skb(skb); |
2579 | return; |
2580 | } |
2581 | |
2582 | /* |
2583 | * If a connection is uploading, drop incoming FCoE frames as there |
2584 | * is a small window where we could try to return a frame while libfc |
2585 | * is trying to clean things up. |
2586 | */ |
2587 | |
2588 | /* Get fcport associated with d_id if it exists */ |
2589 | fcport = qedf_fcport_lookup(qedf, port_id: ntoh24(p: fh->fh_d_id)); |
2590 | |
2591 | if (fcport && test_bit(QEDF_RPORT_UPLOADING_CONNECTION, |
2592 | &fcport->flags)) { |
2593 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, |
2594 | "Connection uploading, dropping fp=%p.\n" , fp); |
2595 | kfree_skb(skb); |
2596 | return; |
2597 | } |
2598 | |
2599 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FCoE frame receive: " |
2600 | "skb=%p fp=%p src=%06x dest=%06x r_ctl=%x fh_type=%x.\n" , skb, fp, |
2601 | ntoh24(fh->fh_s_id), ntoh24(fh->fh_d_id), fh->fh_r_ctl, |
2602 | fh->fh_type); |
2603 | if (qedf_dump_frames) |
2604 | print_hex_dump(KERN_WARNING, prefix_str: "fcoe: " , prefix_type: DUMP_PREFIX_OFFSET, rowsize: 16, |
2605 | groupsize: 1, buf: skb->data, len: skb->len, ascii: false); |
2606 | fc_exch_recv(lport, fp); |
2607 | } |
2608 | |
2609 | static void qedf_ll2_process_skb(struct work_struct *work) |
2610 | { |
2611 | struct qedf_skb_work *skb_work = |
2612 | container_of(work, struct qedf_skb_work, work); |
2613 | struct qedf_ctx *qedf = skb_work->qedf; |
2614 | struct sk_buff *skb = skb_work->skb; |
2615 | struct ethhdr *eh; |
2616 | |
2617 | if (!qedf) { |
2618 | QEDF_ERR(NULL, "qedf is NULL\n" ); |
2619 | goto err_out; |
2620 | } |
2621 | |
2622 | eh = (struct ethhdr *)skb->data; |
2623 | |
2624 | /* Undo VLAN encapsulation */ |
2625 | if (eh->h_proto == htons(ETH_P_8021Q)) { |
2626 | memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2); |
2627 | eh = skb_pull(skb, VLAN_HLEN); |
2628 | skb_reset_mac_header(skb); |
2629 | } |
2630 | |
2631 | /* |
2632 | * Process either a FIP frame or FCoE frame based on the |
2633 | * protocol value. If it's not either just drop the |
2634 | * frame. |
2635 | */ |
2636 | if (eh->h_proto == htons(ETH_P_FIP)) { |
2637 | qedf_fip_recv(qedf, skb); |
2638 | goto out; |
2639 | } else if (eh->h_proto == htons(ETH_P_FCOE)) { |
2640 | __skb_pull(skb, ETH_HLEN); |
2641 | qedf_recv_frame(qedf, skb); |
2642 | goto out; |
2643 | } else |
2644 | goto err_out; |
2645 | |
2646 | err_out: |
2647 | kfree_skb(skb); |
2648 | out: |
2649 | kfree(objp: skb_work); |
2650 | return; |
2651 | } |
2652 | |
2653 | static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, |
2654 | u32 arg1, u32 arg2) |
2655 | { |
2656 | struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; |
2657 | struct qedf_skb_work *skb_work; |
2658 | |
2659 | if (atomic_read(v: &qedf->link_state) == QEDF_LINK_DOWN) { |
2660 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, |
2661 | "Dropping frame as link state is down.\n" ); |
2662 | kfree_skb(skb); |
2663 | return 0; |
2664 | } |
2665 | |
2666 | skb_work = kzalloc(size: sizeof(struct qedf_skb_work), GFP_ATOMIC); |
2667 | if (!skb_work) { |
2668 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " |
2669 | "dropping frame.\n" ); |
2670 | kfree_skb(skb); |
2671 | return 0; |
2672 | } |
2673 | |
2674 | INIT_WORK(&skb_work->work, qedf_ll2_process_skb); |
2675 | skb_work->skb = skb; |
2676 | skb_work->qedf = qedf; |
2677 | queue_work(wq: qedf->ll2_recv_wq, work: &skb_work->work); |
2678 | |
2679 | return 0; |
2680 | } |
2681 | |
2682 | static struct qed_ll2_cb_ops qedf_ll2_cb_ops = { |
2683 | .rx_cb = qedf_ll2_rx, |
2684 | .tx_cb = NULL, |
2685 | }; |
2686 | |
2687 | /* Main thread to process I/O completions */ |
2688 | void qedf_fp_io_handler(struct work_struct *work) |
2689 | { |
2690 | struct qedf_io_work *io_work = |
2691 | container_of(work, struct qedf_io_work, work); |
2692 | u32 comp_type; |
2693 | |
2694 | /* |
2695 | * Deferred part of unsolicited CQE sends |
2696 | * frame to libfc. |
2697 | */ |
2698 | comp_type = (io_work->cqe.cqe_data >> |
2699 | FCOE_CQE_CQE_TYPE_SHIFT) & |
2700 | FCOE_CQE_CQE_TYPE_MASK; |
2701 | if (comp_type == FCOE_UNSOLIC_CQE_TYPE && |
2702 | io_work->fp) |
2703 | fc_exch_recv(io_work->qedf->lport, io_work->fp); |
2704 | else |
2705 | qedf_process_cqe(qedf: io_work->qedf, cqe: &io_work->cqe); |
2706 | |
2707 | kfree(objp: io_work); |
2708 | } |
2709 | |
2710 | static int qedf_alloc_and_init_sb(struct qedf_ctx *qedf, |
2711 | struct qed_sb_info *sb_info, u16 sb_id) |
2712 | { |
2713 | struct status_block *sb_virt; |
2714 | dma_addr_t sb_phys; |
2715 | int ret; |
2716 | |
2717 | sb_virt = dma_alloc_coherent(dev: &qedf->pdev->dev, |
2718 | size: sizeof(struct status_block), dma_handle: &sb_phys, GFP_KERNEL); |
2719 | |
2720 | if (!sb_virt) { |
2721 | QEDF_ERR(&qedf->dbg_ctx, |
2722 | "Status block allocation failed for id = %d.\n" , |
2723 | sb_id); |
2724 | return -ENOMEM; |
2725 | } |
2726 | |
2727 | ret = qed_ops->common->sb_init(qedf->cdev, sb_info, sb_virt, sb_phys, |
2728 | sb_id, QED_SB_TYPE_STORAGE); |
2729 | |
2730 | if (ret) { |
2731 | QEDF_ERR(&qedf->dbg_ctx, |
2732 | "Status block initialization failed (0x%x) for id = %d.\n" , |
2733 | ret, sb_id); |
2734 | return ret; |
2735 | } |
2736 | |
2737 | return 0; |
2738 | } |
2739 | |
2740 | static void qedf_free_sb(struct qedf_ctx *qedf, struct qed_sb_info *sb_info) |
2741 | { |
2742 | if (sb_info->sb_virt) |
2743 | dma_free_coherent(dev: &qedf->pdev->dev, size: sizeof(*sb_info->sb_virt), |
2744 | cpu_addr: (void *)sb_info->sb_virt, dma_handle: sb_info->sb_phys); |
2745 | } |
2746 | |
2747 | static void qedf_destroy_sb(struct qedf_ctx *qedf) |
2748 | { |
2749 | int id; |
2750 | struct qedf_fastpath *fp = NULL; |
2751 | |
2752 | for (id = 0; id < qedf->num_queues; id++) { |
2753 | fp = &(qedf->fp_array[id]); |
2754 | if (fp->sb_id == QEDF_SB_ID_NULL) |
2755 | break; |
2756 | qedf_free_sb(qedf, sb_info: fp->sb_info); |
2757 | kfree(objp: fp->sb_info); |
2758 | } |
2759 | kfree(objp: qedf->fp_array); |
2760 | } |
2761 | |
2762 | static int qedf_prepare_sb(struct qedf_ctx *qedf) |
2763 | { |
2764 | int id; |
2765 | struct qedf_fastpath *fp; |
2766 | int ret; |
2767 | |
2768 | qedf->fp_array = |
2769 | kcalloc(n: qedf->num_queues, size: sizeof(struct qedf_fastpath), |
2770 | GFP_KERNEL); |
2771 | |
2772 | if (!qedf->fp_array) { |
2773 | QEDF_ERR(&(qedf->dbg_ctx), "fastpath array allocation " |
2774 | "failed.\n" ); |
2775 | return -ENOMEM; |
2776 | } |
2777 | |
2778 | for (id = 0; id < qedf->num_queues; id++) { |
2779 | fp = &(qedf->fp_array[id]); |
2780 | fp->sb_id = QEDF_SB_ID_NULL; |
2781 | fp->sb_info = kcalloc(n: 1, size: sizeof(*fp->sb_info), GFP_KERNEL); |
2782 | if (!fp->sb_info) { |
2783 | QEDF_ERR(&(qedf->dbg_ctx), "SB info struct " |
2784 | "allocation failed.\n" ); |
2785 | goto err; |
2786 | } |
2787 | ret = qedf_alloc_and_init_sb(qedf, sb_info: fp->sb_info, sb_id: id); |
2788 | if (ret) { |
2789 | QEDF_ERR(&(qedf->dbg_ctx), "SB allocation and " |
2790 | "initialization failed.\n" ); |
2791 | goto err; |
2792 | } |
2793 | fp->sb_id = id; |
2794 | fp->qedf = qedf; |
2795 | fp->cq_num_entries = |
2796 | qedf->global_queues[id]->cq_mem_size / |
2797 | sizeof(struct fcoe_cqe); |
2798 | } |
2799 | err: |
2800 | return 0; |
2801 | } |
2802 | |
2803 | void qedf_process_cqe(struct qedf_ctx *qedf, struct fcoe_cqe *cqe) |
2804 | { |
2805 | u16 xid; |
2806 | struct qedf_ioreq *io_req; |
2807 | struct qedf_rport *fcport; |
2808 | u32 comp_type; |
2809 | u8 io_comp_type; |
2810 | unsigned long flags; |
2811 | |
2812 | comp_type = (cqe->cqe_data >> FCOE_CQE_CQE_TYPE_SHIFT) & |
2813 | FCOE_CQE_CQE_TYPE_MASK; |
2814 | |
2815 | xid = cqe->cqe_data & FCOE_CQE_TASK_ID_MASK; |
2816 | io_req = &qedf->cmd_mgr->cmds[xid]; |
2817 | |
2818 | /* Completion not for a valid I/O anymore so just return */ |
2819 | if (!io_req) { |
2820 | QEDF_ERR(&qedf->dbg_ctx, |
2821 | "io_req is NULL for xid=0x%x.\n" , xid); |
2822 | return; |
2823 | } |
2824 | |
2825 | fcport = io_req->fcport; |
2826 | |
2827 | if (fcport == NULL) { |
2828 | QEDF_ERR(&qedf->dbg_ctx, |
2829 | "fcport is NULL for xid=0x%x io_req=%p.\n" , |
2830 | xid, io_req); |
2831 | return; |
2832 | } |
2833 | |
2834 | /* |
2835 | * Check that fcport is offloaded. If it isn't then the spinlock |
2836 | * isn't valid and shouldn't be taken. We should just return. |
2837 | */ |
2838 | if (!test_bit(QEDF_RPORT_SESSION_READY, &fcport->flags)) { |
2839 | QEDF_ERR(&qedf->dbg_ctx, |
2840 | "Session not offloaded yet, fcport = %p.\n" , fcport); |
2841 | return; |
2842 | } |
2843 | |
2844 | spin_lock_irqsave(&fcport->rport_lock, flags); |
2845 | io_comp_type = io_req->cmd_type; |
2846 | spin_unlock_irqrestore(lock: &fcport->rport_lock, flags); |
2847 | |
2848 | switch (comp_type) { |
2849 | case FCOE_GOOD_COMPLETION_CQE_TYPE: |
2850 | atomic_inc(v: &fcport->free_sqes); |
2851 | switch (io_comp_type) { |
2852 | case QEDF_SCSI_CMD: |
2853 | qedf_scsi_completion(qedf, cqe, io_req); |
2854 | break; |
2855 | case QEDF_ELS: |
2856 | qedf_process_els_compl(qedf, cqe, els_req: io_req); |
2857 | break; |
2858 | case QEDF_TASK_MGMT_CMD: |
2859 | qedf_process_tmf_compl(qedf, cqe, io_req); |
2860 | break; |
2861 | case QEDF_SEQ_CLEANUP: |
2862 | qedf_process_seq_cleanup_compl(qedf, cqe, io_req); |
2863 | break; |
2864 | } |
2865 | break; |
2866 | case FCOE_ERROR_DETECTION_CQE_TYPE: |
2867 | atomic_inc(v: &fcport->free_sqes); |
2868 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2869 | "Error detect CQE.\n" ); |
2870 | qedf_process_error_detect(qedf, cqe, io_req); |
2871 | break; |
2872 | case FCOE_EXCH_CLEANUP_CQE_TYPE: |
2873 | atomic_inc(v: &fcport->free_sqes); |
2874 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2875 | "Cleanup CQE.\n" ); |
2876 | qedf_process_cleanup_compl(qedf, cqe, io_req); |
2877 | break; |
2878 | case FCOE_ABTS_CQE_TYPE: |
2879 | atomic_inc(v: &fcport->free_sqes); |
2880 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2881 | "Abort CQE.\n" ); |
2882 | qedf_process_abts_compl(qedf, cqe, io_req); |
2883 | break; |
2884 | case FCOE_DUMMY_CQE_TYPE: |
2885 | atomic_inc(v: &fcport->free_sqes); |
2886 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2887 | "Dummy CQE.\n" ); |
2888 | break; |
2889 | case FCOE_LOCAL_COMP_CQE_TYPE: |
2890 | atomic_inc(v: &fcport->free_sqes); |
2891 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2892 | "Local completion CQE.\n" ); |
2893 | break; |
2894 | case FCOE_WARNING_CQE_TYPE: |
2895 | atomic_inc(v: &fcport->free_sqes); |
2896 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2897 | "Warning CQE.\n" ); |
2898 | qedf_process_warning_compl(qedf, cqe, io_req); |
2899 | break; |
2900 | case MAX_FCOE_CQE_TYPE: |
2901 | atomic_inc(v: &fcport->free_sqes); |
2902 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2903 | "Max FCoE CQE.\n" ); |
2904 | break; |
2905 | default: |
2906 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_IO, |
2907 | "Default CQE.\n" ); |
2908 | break; |
2909 | } |
2910 | } |
2911 | |
2912 | static void qedf_free_bdq(struct qedf_ctx *qedf) |
2913 | { |
2914 | int i; |
2915 | |
2916 | if (qedf->bdq_pbl_list) |
2917 | dma_free_coherent(dev: &qedf->pdev->dev, QEDF_PAGE_SIZE, |
2918 | cpu_addr: qedf->bdq_pbl_list, dma_handle: qedf->bdq_pbl_list_dma); |
2919 | |
2920 | if (qedf->bdq_pbl) |
2921 | dma_free_coherent(dev: &qedf->pdev->dev, size: qedf->bdq_pbl_mem_size, |
2922 | cpu_addr: qedf->bdq_pbl, dma_handle: qedf->bdq_pbl_dma); |
2923 | |
2924 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { |
2925 | if (qedf->bdq[i].buf_addr) { |
2926 | dma_free_coherent(dev: &qedf->pdev->dev, QEDF_BDQ_BUF_SIZE, |
2927 | cpu_addr: qedf->bdq[i].buf_addr, dma_handle: qedf->bdq[i].buf_dma); |
2928 | } |
2929 | } |
2930 | } |
2931 | |
2932 | static void qedf_free_global_queues(struct qedf_ctx *qedf) |
2933 | { |
2934 | int i; |
2935 | struct global_queue **gl = qedf->global_queues; |
2936 | |
2937 | for (i = 0; i < qedf->num_queues; i++) { |
2938 | if (!gl[i]) |
2939 | continue; |
2940 | |
2941 | if (gl[i]->cq) |
2942 | dma_free_coherent(dev: &qedf->pdev->dev, |
2943 | size: gl[i]->cq_mem_size, cpu_addr: gl[i]->cq, dma_handle: gl[i]->cq_dma); |
2944 | if (gl[i]->cq_pbl) |
2945 | dma_free_coherent(dev: &qedf->pdev->dev, size: gl[i]->cq_pbl_size, |
2946 | cpu_addr: gl[i]->cq_pbl, dma_handle: gl[i]->cq_pbl_dma); |
2947 | |
2948 | kfree(objp: gl[i]); |
2949 | } |
2950 | |
2951 | qedf_free_bdq(qedf); |
2952 | } |
2953 | |
2954 | static int qedf_alloc_bdq(struct qedf_ctx *qedf) |
2955 | { |
2956 | int i; |
2957 | struct scsi_bd *pbl; |
2958 | u64 *list; |
2959 | |
2960 | /* Alloc dma memory for BDQ buffers */ |
2961 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { |
2962 | qedf->bdq[i].buf_addr = dma_alloc_coherent(dev: &qedf->pdev->dev, |
2963 | QEDF_BDQ_BUF_SIZE, dma_handle: &qedf->bdq[i].buf_dma, GFP_KERNEL); |
2964 | if (!qedf->bdq[i].buf_addr) { |
2965 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ " |
2966 | "buffer %d.\n" , i); |
2967 | return -ENOMEM; |
2968 | } |
2969 | } |
2970 | |
2971 | /* Alloc dma memory for BDQ page buffer list */ |
2972 | qedf->bdq_pbl_mem_size = |
2973 | QEDF_BDQ_SIZE * sizeof(struct scsi_bd); |
2974 | qedf->bdq_pbl_mem_size = |
2975 | ALIGN(qedf->bdq_pbl_mem_size, QEDF_PAGE_SIZE); |
2976 | |
2977 | qedf->bdq_pbl = dma_alloc_coherent(dev: &qedf->pdev->dev, |
2978 | size: qedf->bdq_pbl_mem_size, dma_handle: &qedf->bdq_pbl_dma, GFP_KERNEL); |
2979 | if (!qedf->bdq_pbl) { |
2980 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate BDQ PBL.\n" ); |
2981 | return -ENOMEM; |
2982 | } |
2983 | |
2984 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
2985 | "BDQ PBL addr=0x%p dma=%pad\n" , |
2986 | qedf->bdq_pbl, &qedf->bdq_pbl_dma); |
2987 | |
2988 | /* |
2989 | * Populate BDQ PBL with physical and virtual address of individual |
2990 | * BDQ buffers |
2991 | */ |
2992 | pbl = (struct scsi_bd *)qedf->bdq_pbl; |
2993 | for (i = 0; i < QEDF_BDQ_SIZE; i++) { |
2994 | pbl->address.hi = cpu_to_le32(U64_HI(qedf->bdq[i].buf_dma)); |
2995 | pbl->address.lo = cpu_to_le32(U64_LO(qedf->bdq[i].buf_dma)); |
2996 | pbl->opaque.fcoe_opaque.hi = 0; |
2997 | /* Opaque lo data is an index into the BDQ array */ |
2998 | pbl->opaque.fcoe_opaque.lo = cpu_to_le32(i); |
2999 | pbl++; |
3000 | } |
3001 | |
3002 | /* Allocate list of PBL pages */ |
3003 | qedf->bdq_pbl_list = dma_alloc_coherent(dev: &qedf->pdev->dev, |
3004 | QEDF_PAGE_SIZE, |
3005 | dma_handle: &qedf->bdq_pbl_list_dma, |
3006 | GFP_KERNEL); |
3007 | if (!qedf->bdq_pbl_list) { |
3008 | QEDF_ERR(&(qedf->dbg_ctx), "Could not allocate list of PBL pages.\n" ); |
3009 | return -ENOMEM; |
3010 | } |
3011 | |
3012 | /* |
3013 | * Now populate PBL list with pages that contain pointers to the |
3014 | * individual buffers. |
3015 | */ |
3016 | qedf->bdq_pbl_list_num_entries = qedf->bdq_pbl_mem_size / |
3017 | QEDF_PAGE_SIZE; |
3018 | list = (u64 *)qedf->bdq_pbl_list; |
3019 | for (i = 0; i < qedf->bdq_pbl_list_num_entries; i++) { |
3020 | *list = qedf->bdq_pbl_dma; |
3021 | list++; |
3022 | } |
3023 | |
3024 | return 0; |
3025 | } |
3026 | |
3027 | static int qedf_alloc_global_queues(struct qedf_ctx *qedf) |
3028 | { |
3029 | u32 *list; |
3030 | int i; |
3031 | int status; |
3032 | u32 *pbl; |
3033 | dma_addr_t page; |
3034 | int num_pages; |
3035 | |
3036 | /* Allocate and map CQs, RQs */ |
3037 | /* |
3038 | * Number of global queues (CQ / RQ). This should |
3039 | * be <= number of available MSIX vectors for the PF |
3040 | */ |
3041 | if (!qedf->num_queues) { |
3042 | QEDF_ERR(&(qedf->dbg_ctx), "No MSI-X vectors available!\n" ); |
3043 | return -ENOMEM; |
3044 | } |
3045 | |
3046 | /* |
3047 | * Make sure we allocated the PBL that will contain the physical |
3048 | * addresses of our queues |
3049 | */ |
3050 | if (!qedf->p_cpuq) { |
3051 | QEDF_ERR(&qedf->dbg_ctx, "p_cpuq is NULL.\n" ); |
3052 | return -EINVAL; |
3053 | } |
3054 | |
3055 | qedf->global_queues = kzalloc(size: (sizeof(struct global_queue *) |
3056 | * qedf->num_queues), GFP_KERNEL); |
3057 | if (!qedf->global_queues) { |
3058 | QEDF_ERR(&(qedf->dbg_ctx), "Unable to allocate global " |
3059 | "queues array ptr memory\n" ); |
3060 | return -ENOMEM; |
3061 | } |
3062 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3063 | "qedf->global_queues=%p.\n" , qedf->global_queues); |
3064 | |
3065 | /* Allocate DMA coherent buffers for BDQ */ |
3066 | status = qedf_alloc_bdq(qedf); |
3067 | if (status) { |
3068 | QEDF_ERR(&qedf->dbg_ctx, "Unable to allocate bdq.\n" ); |
3069 | goto mem_alloc_failure; |
3070 | } |
3071 | |
3072 | /* Allocate a CQ and an associated PBL for each MSI-X vector */ |
3073 | for (i = 0; i < qedf->num_queues; i++) { |
3074 | qedf->global_queues[i] = kzalloc(size: sizeof(struct global_queue), |
3075 | GFP_KERNEL); |
3076 | if (!qedf->global_queues[i]) { |
3077 | QEDF_WARN(&(qedf->dbg_ctx), "Unable to allocate " |
3078 | "global queue %d.\n" , i); |
3079 | status = -ENOMEM; |
3080 | goto mem_alloc_failure; |
3081 | } |
3082 | |
3083 | qedf->global_queues[i]->cq_mem_size = |
3084 | FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); |
3085 | qedf->global_queues[i]->cq_mem_size = |
3086 | ALIGN(qedf->global_queues[i]->cq_mem_size, QEDF_PAGE_SIZE); |
3087 | |
3088 | qedf->global_queues[i]->cq_pbl_size = |
3089 | (qedf->global_queues[i]->cq_mem_size / |
3090 | PAGE_SIZE) * sizeof(void *); |
3091 | qedf->global_queues[i]->cq_pbl_size = |
3092 | ALIGN(qedf->global_queues[i]->cq_pbl_size, QEDF_PAGE_SIZE); |
3093 | |
3094 | qedf->global_queues[i]->cq = |
3095 | dma_alloc_coherent(dev: &qedf->pdev->dev, |
3096 | size: qedf->global_queues[i]->cq_mem_size, |
3097 | dma_handle: &qedf->global_queues[i]->cq_dma, |
3098 | GFP_KERNEL); |
3099 | |
3100 | if (!qedf->global_queues[i]->cq) { |
3101 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq.\n" ); |
3102 | status = -ENOMEM; |
3103 | goto mem_alloc_failure; |
3104 | } |
3105 | |
3106 | qedf->global_queues[i]->cq_pbl = |
3107 | dma_alloc_coherent(dev: &qedf->pdev->dev, |
3108 | size: qedf->global_queues[i]->cq_pbl_size, |
3109 | dma_handle: &qedf->global_queues[i]->cq_pbl_dma, |
3110 | GFP_KERNEL); |
3111 | |
3112 | if (!qedf->global_queues[i]->cq_pbl) { |
3113 | QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate cq PBL.\n" ); |
3114 | status = -ENOMEM; |
3115 | goto mem_alloc_failure; |
3116 | } |
3117 | |
3118 | /* Create PBL */ |
3119 | num_pages = qedf->global_queues[i]->cq_mem_size / |
3120 | QEDF_PAGE_SIZE; |
3121 | page = qedf->global_queues[i]->cq_dma; |
3122 | pbl = (u32 *)qedf->global_queues[i]->cq_pbl; |
3123 | |
3124 | while (num_pages--) { |
3125 | *pbl = U64_LO(page); |
3126 | pbl++; |
3127 | *pbl = U64_HI(page); |
3128 | pbl++; |
3129 | page += QEDF_PAGE_SIZE; |
3130 | } |
3131 | /* Set the initial consumer index for cq */ |
3132 | qedf->global_queues[i]->cq_cons_idx = 0; |
3133 | } |
3134 | |
3135 | list = (u32 *)qedf->p_cpuq; |
3136 | |
3137 | /* |
3138 | * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer, |
3139 | * CQ#1 PBL pointer, RQ#1 PBL pointer, etc. Each PBL pointer points |
3140 | * to the physical address which contains an array of pointers to |
3141 | * the physical addresses of the specific queue pages. |
3142 | */ |
3143 | for (i = 0; i < qedf->num_queues; i++) { |
3144 | *list = U64_LO(qedf->global_queues[i]->cq_pbl_dma); |
3145 | list++; |
3146 | *list = U64_HI(qedf->global_queues[i]->cq_pbl_dma); |
3147 | list++; |
3148 | *list = U64_LO(0); |
3149 | list++; |
3150 | *list = U64_HI(0); |
3151 | list++; |
3152 | } |
3153 | |
3154 | return 0; |
3155 | |
3156 | mem_alloc_failure: |
3157 | qedf_free_global_queues(qedf); |
3158 | return status; |
3159 | } |
3160 | |
3161 | static int qedf_set_fcoe_pf_param(struct qedf_ctx *qedf) |
3162 | { |
3163 | u8 sq_num_pbl_pages; |
3164 | u32 sq_mem_size; |
3165 | u32 cq_mem_size; |
3166 | u32 cq_num_entries; |
3167 | int rval; |
3168 | |
3169 | /* |
3170 | * The number of completion queues/fastpath interrupts/status blocks |
3171 | * we allocation is the minimum off: |
3172 | * |
3173 | * Number of CPUs |
3174 | * Number allocated by qed for our PCI function |
3175 | */ |
3176 | qedf->num_queues = MIN_NUM_CPUS_MSIX(qedf); |
3177 | |
3178 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Number of CQs is %d.\n" , |
3179 | qedf->num_queues); |
3180 | |
3181 | qedf->p_cpuq = dma_alloc_coherent(dev: &qedf->pdev->dev, |
3182 | size: qedf->num_queues * sizeof(struct qedf_glbl_q_params), |
3183 | dma_handle: &qedf->hw_p_cpuq, GFP_KERNEL); |
3184 | |
3185 | if (!qedf->p_cpuq) { |
3186 | QEDF_ERR(&(qedf->dbg_ctx), "dma_alloc_coherent failed.\n" ); |
3187 | return 1; |
3188 | } |
3189 | |
3190 | rval = qedf_alloc_global_queues(qedf); |
3191 | if (rval) { |
3192 | QEDF_ERR(&(qedf->dbg_ctx), "Global queue allocation " |
3193 | "failed.\n" ); |
3194 | return 1; |
3195 | } |
3196 | |
3197 | /* Calculate SQ PBL size in the same manner as in qedf_sq_alloc() */ |
3198 | sq_mem_size = SQ_NUM_ENTRIES * sizeof(struct fcoe_wqe); |
3199 | sq_mem_size = ALIGN(sq_mem_size, QEDF_PAGE_SIZE); |
3200 | sq_num_pbl_pages = (sq_mem_size / QEDF_PAGE_SIZE); |
3201 | |
3202 | /* Calculate CQ num entries */ |
3203 | cq_mem_size = FCOE_PARAMS_CQ_NUM_ENTRIES * sizeof(struct fcoe_cqe); |
3204 | cq_mem_size = ALIGN(cq_mem_size, QEDF_PAGE_SIZE); |
3205 | cq_num_entries = cq_mem_size / sizeof(struct fcoe_cqe); |
3206 | |
3207 | memset(&(qedf->pf_params), 0, sizeof(qedf->pf_params)); |
3208 | |
3209 | /* Setup the value for fcoe PF */ |
3210 | qedf->pf_params.fcoe_pf_params.num_cons = QEDF_MAX_SESSIONS; |
3211 | qedf->pf_params.fcoe_pf_params.num_tasks = FCOE_PARAMS_NUM_TASKS; |
3212 | qedf->pf_params.fcoe_pf_params.glbl_q_params_addr = |
3213 | (u64)qedf->hw_p_cpuq; |
3214 | qedf->pf_params.fcoe_pf_params.sq_num_pbl_pages = sq_num_pbl_pages; |
3215 | |
3216 | qedf->pf_params.fcoe_pf_params.rq_buffer_log_size = 0; |
3217 | |
3218 | qedf->pf_params.fcoe_pf_params.cq_num_entries = cq_num_entries; |
3219 | qedf->pf_params.fcoe_pf_params.num_cqs = qedf->num_queues; |
3220 | |
3221 | /* log_page_size: 12 for 4KB pages */ |
3222 | qedf->pf_params.fcoe_pf_params.log_page_size = ilog2(QEDF_PAGE_SIZE); |
3223 | |
3224 | qedf->pf_params.fcoe_pf_params.mtu = 9000; |
3225 | qedf->pf_params.fcoe_pf_params.gl_rq_pi = QEDF_FCOE_PARAMS_GL_RQ_PI; |
3226 | qedf->pf_params.fcoe_pf_params.gl_cmd_pi = QEDF_FCOE_PARAMS_GL_CMD_PI; |
3227 | |
3228 | /* BDQ address and size */ |
3229 | qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0] = |
3230 | qedf->bdq_pbl_list_dma; |
3231 | qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0] = |
3232 | qedf->bdq_pbl_list_num_entries; |
3233 | qedf->pf_params.fcoe_pf_params.rq_buffer_size = QEDF_BDQ_BUF_SIZE; |
3234 | |
3235 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3236 | "bdq_list=%p bdq_pbl_list_dma=%llx bdq_pbl_list_entries=%d.\n" , |
3237 | qedf->bdq_pbl_list, |
3238 | qedf->pf_params.fcoe_pf_params.bdq_pbl_base_addr[0], |
3239 | qedf->pf_params.fcoe_pf_params.bdq_pbl_num_entries[0]); |
3240 | |
3241 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3242 | "cq_num_entries=%d.\n" , |
3243 | qedf->pf_params.fcoe_pf_params.cq_num_entries); |
3244 | |
3245 | return 0; |
3246 | } |
3247 | |
3248 | /* Free DMA coherent memory for array of queue pointers we pass to qed */ |
3249 | static void qedf_free_fcoe_pf_param(struct qedf_ctx *qedf) |
3250 | { |
3251 | size_t size = 0; |
3252 | |
3253 | if (qedf->p_cpuq) { |
3254 | size = qedf->num_queues * sizeof(struct qedf_glbl_q_params); |
3255 | dma_free_coherent(dev: &qedf->pdev->dev, size, cpu_addr: qedf->p_cpuq, |
3256 | dma_handle: qedf->hw_p_cpuq); |
3257 | } |
3258 | |
3259 | qedf_free_global_queues(qedf); |
3260 | |
3261 | kfree(objp: qedf->global_queues); |
3262 | } |
3263 | |
3264 | /* |
3265 | * PCI driver functions |
3266 | */ |
3267 | |
3268 | static const struct pci_device_id qedf_pci_tbl[] = { |
3269 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165c) }, |
3270 | { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8080) }, |
3271 | {0} |
3272 | }; |
3273 | MODULE_DEVICE_TABLE(pci, qedf_pci_tbl); |
3274 | |
3275 | static struct pci_driver qedf_pci_driver = { |
3276 | .name = QEDF_MODULE_NAME, |
3277 | .id_table = qedf_pci_tbl, |
3278 | .probe = qedf_probe, |
3279 | .remove = qedf_remove, |
3280 | .shutdown = qedf_shutdown, |
3281 | .suspend = qedf_suspend, |
3282 | }; |
3283 | |
3284 | static int __qedf_probe(struct pci_dev *pdev, int mode) |
3285 | { |
3286 | int rc = -EINVAL; |
3287 | struct fc_lport *lport; |
3288 | struct qedf_ctx *qedf = NULL; |
3289 | struct Scsi_Host *host; |
3290 | bool is_vf = false; |
3291 | struct qed_ll2_params params; |
3292 | char host_buf[20]; |
3293 | struct qed_link_params link_params; |
3294 | int status; |
3295 | void *task_start, *task_end; |
3296 | struct qed_slowpath_params slowpath_params; |
3297 | struct qed_probe_params qed_params; |
3298 | u16 retry_cnt = 10; |
3299 | |
3300 | /* |
3301 | * When doing error recovery we didn't reap the lport so don't try |
3302 | * to reallocate it. |
3303 | */ |
3304 | retry_probe: |
3305 | if (mode == QEDF_MODE_RECOVERY) |
3306 | msleep(msecs: 2000); |
3307 | |
3308 | if (mode != QEDF_MODE_RECOVERY) { |
3309 | lport = libfc_host_alloc(sht: &qedf_host_template, |
3310 | priv_size: sizeof(struct qedf_ctx)); |
3311 | |
3312 | if (!lport) { |
3313 | QEDF_ERR(NULL, "Could not allocate lport.\n" ); |
3314 | rc = -ENOMEM; |
3315 | goto err0; |
3316 | } |
3317 | |
3318 | fc_disc_init(lport); |
3319 | |
3320 | /* Initialize qedf_ctx */ |
3321 | qedf = lport_priv(lport); |
3322 | set_bit(QEDF_PROBING, addr: &qedf->flags); |
3323 | qedf->lport = lport; |
3324 | qedf->ctlr.lp = lport; |
3325 | qedf->pdev = pdev; |
3326 | qedf->dbg_ctx.pdev = pdev; |
3327 | qedf->dbg_ctx.host_no = lport->host->host_no; |
3328 | spin_lock_init(&qedf->hba_lock); |
3329 | INIT_LIST_HEAD(list: &qedf->fcports); |
3330 | qedf->curr_conn_id = QEDF_MAX_SESSIONS - 1; |
3331 | atomic_set(v: &qedf->num_offloads, i: 0); |
3332 | qedf->stop_io_on_error = false; |
3333 | pci_set_drvdata(pdev, data: qedf); |
3334 | init_completion(x: &qedf->fipvlan_compl); |
3335 | mutex_init(&qedf->stats_mutex); |
3336 | mutex_init(&qedf->flush_mutex); |
3337 | qedf->flogi_pending = 0; |
3338 | |
3339 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, |
3340 | "QLogic FastLinQ FCoE Module qedf %s, " |
3341 | "FW %d.%d.%d.%d\n" , QEDF_VERSION, |
3342 | FW_MAJOR_VERSION, FW_MINOR_VERSION, FW_REVISION_VERSION, |
3343 | FW_ENGINEERING_VERSION); |
3344 | } else { |
3345 | /* Init pointers during recovery */ |
3346 | qedf = pci_get_drvdata(pdev); |
3347 | set_bit(QEDF_PROBING, addr: &qedf->flags); |
3348 | lport = qedf->lport; |
3349 | } |
3350 | |
3351 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe started.\n" ); |
3352 | |
3353 | host = lport->host; |
3354 | |
3355 | /* Allocate mempool for qedf_io_work structs */ |
3356 | qedf->io_mempool = mempool_create_slab_pool(QEDF_IO_WORK_MIN, |
3357 | kc: qedf_io_work_cache); |
3358 | if (qedf->io_mempool == NULL) { |
3359 | QEDF_ERR(&(qedf->dbg_ctx), "qedf->io_mempool is NULL.\n" ); |
3360 | goto err1; |
3361 | } |
3362 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_INFO, "qedf->io_mempool=%p.\n" , |
3363 | qedf->io_mempool); |
3364 | |
3365 | sprintf(buf: host_buf, fmt: "qedf_%u_link" , |
3366 | qedf->lport->host->host_no); |
3367 | qedf->link_update_wq = create_workqueue(host_buf); |
3368 | INIT_DELAYED_WORK(&qedf->link_update, qedf_handle_link_update); |
3369 | INIT_DELAYED_WORK(&qedf->link_recovery, qedf_link_recovery); |
3370 | INIT_DELAYED_WORK(&qedf->grcdump_work, qedf_wq_grcdump); |
3371 | INIT_DELAYED_WORK(&qedf->stag_work, qedf_stag_change_work); |
3372 | qedf->fipvlan_retries = qedf_fipvlan_retries; |
3373 | /* Set a default prio in case DCBX doesn't converge */ |
3374 | if (qedf_default_prio > -1) { |
3375 | /* |
3376 | * This is the case where we pass a modparam in so we want to |
3377 | * honor it even if dcbx doesn't converge. |
3378 | */ |
3379 | qedf->prio = qedf_default_prio; |
3380 | } else |
3381 | qedf->prio = QEDF_DEFAULT_PRIO; |
3382 | |
3383 | /* |
3384 | * Common probe. Takes care of basic hardware init and pci_* |
3385 | * functions. |
3386 | */ |
3387 | memset(&qed_params, 0, sizeof(qed_params)); |
3388 | qed_params.protocol = QED_PROTOCOL_FCOE; |
3389 | qed_params.dp_module = qedf_dp_module; |
3390 | qed_params.dp_level = qedf_dp_level; |
3391 | qed_params.is_vf = is_vf; |
3392 | qedf->cdev = qed_ops->common->probe(pdev, &qed_params); |
3393 | if (!qedf->cdev) { |
3394 | if ((mode == QEDF_MODE_RECOVERY) && retry_cnt) { |
3395 | QEDF_ERR(&qedf->dbg_ctx, |
3396 | "Retry %d initialize hardware\n" , retry_cnt); |
3397 | retry_cnt--; |
3398 | goto retry_probe; |
3399 | } |
3400 | QEDF_ERR(&qedf->dbg_ctx, "common probe failed.\n" ); |
3401 | rc = -ENODEV; |
3402 | goto err1; |
3403 | } |
3404 | |
3405 | /* Learn information crucial for qedf to progress */ |
3406 | rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); |
3407 | if (rc) { |
3408 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to dev info.\n" ); |
3409 | goto err1; |
3410 | } |
3411 | |
3412 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, |
3413 | "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n" , |
3414 | qedf->dev_info.common.num_hwfns, |
3415 | qed_ops->common->get_affin_hwfn_idx(qedf->cdev)); |
3416 | |
3417 | /* queue allocation code should come here |
3418 | * order should be |
3419 | * slowpath_start |
3420 | * status block allocation |
3421 | * interrupt registration (to get min number of queues) |
3422 | * set_fcoe_pf_param |
3423 | * qed_sp_fcoe_func_start |
3424 | */ |
3425 | rc = qedf_set_fcoe_pf_param(qedf); |
3426 | if (rc) { |
3427 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot set fcoe pf param.\n" ); |
3428 | goto err2; |
3429 | } |
3430 | qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); |
3431 | |
3432 | /* Learn information crucial for qedf to progress */ |
3433 | rc = qed_ops->fill_dev_info(qedf->cdev, &qedf->dev_info); |
3434 | if (rc) { |
3435 | QEDF_ERR(&qedf->dbg_ctx, "Failed to fill dev info.\n" ); |
3436 | goto err2; |
3437 | } |
3438 | |
3439 | if (mode != QEDF_MODE_RECOVERY) { |
3440 | qedf->devlink = qed_ops->common->devlink_register(qedf->cdev); |
3441 | if (IS_ERR(ptr: qedf->devlink)) { |
3442 | QEDF_ERR(&qedf->dbg_ctx, "Cannot register devlink\n" ); |
3443 | rc = PTR_ERR(ptr: qedf->devlink); |
3444 | qedf->devlink = NULL; |
3445 | goto err2; |
3446 | } |
3447 | } |
3448 | |
3449 | /* Record BDQ producer doorbell addresses */ |
3450 | qedf->bdq_primary_prod = qedf->dev_info.primary_dbq_rq_addr; |
3451 | qedf->bdq_secondary_prod = qedf->dev_info.secondary_bdq_rq_addr; |
3452 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3453 | "BDQ primary_prod=%p secondary_prod=%p.\n" , qedf->bdq_primary_prod, |
3454 | qedf->bdq_secondary_prod); |
3455 | |
3456 | qed_ops->register_ops(qedf->cdev, &qedf_cb_ops, qedf); |
3457 | |
3458 | rc = qedf_prepare_sb(qedf); |
3459 | if (rc) { |
3460 | |
3461 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n" ); |
3462 | goto err2; |
3463 | } |
3464 | |
3465 | /* Start the Slowpath-process */ |
3466 | slowpath_params.int_mode = QED_INT_MODE_MSIX; |
3467 | slowpath_params.drv_major = QEDF_DRIVER_MAJOR_VER; |
3468 | slowpath_params.drv_minor = QEDF_DRIVER_MINOR_VER; |
3469 | slowpath_params.drv_rev = QEDF_DRIVER_REV_VER; |
3470 | slowpath_params.drv_eng = QEDF_DRIVER_ENG_VER; |
3471 | strncpy(p: slowpath_params.name, q: "qedf" , QED_DRV_VER_STR_SIZE); |
3472 | rc = qed_ops->common->slowpath_start(qedf->cdev, &slowpath_params); |
3473 | if (rc) { |
3474 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start slowpath.\n" ); |
3475 | goto err2; |
3476 | } |
3477 | |
3478 | /* |
3479 | * update_pf_params needs to be called before and after slowpath |
3480 | * start |
3481 | */ |
3482 | qed_ops->common->update_pf_params(qedf->cdev, &qedf->pf_params); |
3483 | |
3484 | /* Setup interrupts */ |
3485 | rc = qedf_setup_int(qedf); |
3486 | if (rc) { |
3487 | QEDF_ERR(&qedf->dbg_ctx, "Setup interrupts failed.\n" ); |
3488 | goto err3; |
3489 | } |
3490 | |
3491 | rc = qed_ops->start(qedf->cdev, &qedf->tasks); |
3492 | if (rc) { |
3493 | QEDF_ERR(&(qedf->dbg_ctx), "Cannot start FCoE function.\n" ); |
3494 | goto err4; |
3495 | } |
3496 | task_start = qedf_get_task_mem(info: &qedf->tasks, tid: 0); |
3497 | task_end = qedf_get_task_mem(info: &qedf->tasks, MAX_TID_BLOCKS_FCOE - 1); |
3498 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Task context start=%p, " |
3499 | "end=%p block_size=%u.\n" , task_start, task_end, |
3500 | qedf->tasks.size); |
3501 | |
3502 | /* |
3503 | * We need to write the number of BDs in the BDQ we've preallocated so |
3504 | * the f/w will do a prefetch and we'll get an unsolicited CQE when a |
3505 | * packet arrives. |
3506 | */ |
3507 | qedf->bdq_prod_idx = QEDF_BDQ_SIZE; |
3508 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3509 | "Writing %d to primary and secondary BDQ doorbell registers.\n" , |
3510 | qedf->bdq_prod_idx); |
3511 | writew(val: qedf->bdq_prod_idx, addr: qedf->bdq_primary_prod); |
3512 | readw(addr: qedf->bdq_primary_prod); |
3513 | writew(val: qedf->bdq_prod_idx, addr: qedf->bdq_secondary_prod); |
3514 | readw(addr: qedf->bdq_secondary_prod); |
3515 | |
3516 | qed_ops->common->set_power_state(qedf->cdev, PCI_D0); |
3517 | |
3518 | /* Now that the dev_info struct has been filled in set the MAC |
3519 | * address |
3520 | */ |
3521 | ether_addr_copy(dst: qedf->mac, src: qedf->dev_info.common.hw_mac); |
3522 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "MAC address is %pM.\n" , |
3523 | qedf->mac); |
3524 | |
3525 | /* |
3526 | * Set the WWNN and WWPN in the following way: |
3527 | * |
3528 | * If the info we get from qed is non-zero then use that to set the |
3529 | * WWPN and WWNN. Otherwise fall back to use fcoe_wwn_from_mac() based |
3530 | * on the MAC address. |
3531 | */ |
3532 | if (qedf->dev_info.wwnn != 0 && qedf->dev_info.wwpn != 0) { |
3533 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3534 | "Setting WWPN and WWNN from qed dev_info.\n" ); |
3535 | qedf->wwnn = qedf->dev_info.wwnn; |
3536 | qedf->wwpn = qedf->dev_info.wwpn; |
3537 | } else { |
3538 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3539 | "Setting WWPN and WWNN using fcoe_wwn_from_mac().\n" ); |
3540 | qedf->wwnn = fcoe_wwn_from_mac(mac: qedf->mac, scheme: 1, port: 0); |
3541 | qedf->wwpn = fcoe_wwn_from_mac(mac: qedf->mac, scheme: 2, port: 0); |
3542 | } |
3543 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "WWNN=%016llx " |
3544 | "WWPN=%016llx.\n" , qedf->wwnn, qedf->wwpn); |
3545 | |
3546 | sprintf(buf: host_buf, fmt: "host_%d" , host->host_no); |
3547 | qed_ops->common->set_name(qedf->cdev, host_buf); |
3548 | |
3549 | /* Allocate cmd mgr */ |
3550 | qedf->cmd_mgr = qedf_cmd_mgr_alloc(qedf); |
3551 | if (!qedf->cmd_mgr) { |
3552 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to allocate cmd mgr.\n" ); |
3553 | rc = -ENOMEM; |
3554 | goto err5; |
3555 | } |
3556 | |
3557 | if (mode != QEDF_MODE_RECOVERY) { |
3558 | host->transportt = qedf_fc_transport_template; |
3559 | host->max_lun = qedf_max_lun; |
3560 | host->max_cmd_len = QEDF_MAX_CDB_LEN; |
3561 | host->max_id = QEDF_MAX_SESSIONS; |
3562 | host->can_queue = FCOE_PARAMS_NUM_TASKS; |
3563 | rc = scsi_add_host(host, dev: &pdev->dev); |
3564 | if (rc) { |
3565 | QEDF_WARN(&qedf->dbg_ctx, |
3566 | "Error adding Scsi_Host rc=0x%x.\n" , rc); |
3567 | goto err6; |
3568 | } |
3569 | } |
3570 | |
3571 | memset(¶ms, 0, sizeof(params)); |
3572 | params.mtu = QEDF_LL2_BUF_SIZE; |
3573 | ether_addr_copy(dst: params.ll2_mac_address, src: qedf->mac); |
3574 | |
3575 | /* Start LL2 processing thread */ |
3576 | snprintf(buf: host_buf, size: 20, fmt: "qedf_%d_ll2" , host->host_no); |
3577 | qedf->ll2_recv_wq = |
3578 | create_workqueue(host_buf); |
3579 | if (!qedf->ll2_recv_wq) { |
3580 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to LL2 workqueue.\n" ); |
3581 | rc = -ENOMEM; |
3582 | goto err7; |
3583 | } |
3584 | |
3585 | #ifdef CONFIG_DEBUG_FS |
3586 | qedf_dbg_host_init(qedf: &(qedf->dbg_ctx), dops: qedf_debugfs_ops, |
3587 | fops: qedf_dbg_fops); |
3588 | #endif |
3589 | |
3590 | /* Start LL2 */ |
3591 | qed_ops->ll2->register_cb_ops(qedf->cdev, &qedf_ll2_cb_ops, qedf); |
3592 | rc = qed_ops->ll2->start(qedf->cdev, ¶ms); |
3593 | if (rc) { |
3594 | QEDF_ERR(&(qedf->dbg_ctx), "Could not start Light L2.\n" ); |
3595 | goto err7; |
3596 | } |
3597 | set_bit(QEDF_LL2_STARTED, addr: &qedf->flags); |
3598 | |
3599 | /* Set initial FIP/FCoE VLAN to NULL */ |
3600 | qedf->vlan_id = 0; |
3601 | |
3602 | /* |
3603 | * No need to setup fcoe_ctlr or fc_lport objects during recovery since |
3604 | * they were not reaped during the unload process. |
3605 | */ |
3606 | if (mode != QEDF_MODE_RECOVERY) { |
3607 | /* Setup imbedded fcoe controller */ |
3608 | qedf_fcoe_ctlr_setup(qedf); |
3609 | |
3610 | /* Setup lport */ |
3611 | rc = qedf_lport_setup(qedf); |
3612 | if (rc) { |
3613 | QEDF_ERR(&(qedf->dbg_ctx), |
3614 | "qedf_lport_setup failed.\n" ); |
3615 | goto err7; |
3616 | } |
3617 | } |
3618 | |
3619 | sprintf(buf: host_buf, fmt: "qedf_%u_timer" , qedf->lport->host->host_no); |
3620 | qedf->timer_work_queue = |
3621 | create_workqueue(host_buf); |
3622 | if (!qedf->timer_work_queue) { |
3623 | QEDF_ERR(&(qedf->dbg_ctx), "Failed to start timer " |
3624 | "workqueue.\n" ); |
3625 | rc = -ENOMEM; |
3626 | goto err7; |
3627 | } |
3628 | |
3629 | /* DPC workqueue is not reaped during recovery unload */ |
3630 | if (mode != QEDF_MODE_RECOVERY) { |
3631 | sprintf(buf: host_buf, fmt: "qedf_%u_dpc" , |
3632 | qedf->lport->host->host_no); |
3633 | qedf->dpc_wq = create_workqueue(host_buf); |
3634 | } |
3635 | INIT_DELAYED_WORK(&qedf->recovery_work, qedf_recovery_handler); |
3636 | |
3637 | /* |
3638 | * GRC dump and sysfs parameters are not reaped during the recovery |
3639 | * unload process. |
3640 | */ |
3641 | if (mode != QEDF_MODE_RECOVERY) { |
3642 | qedf->grcdump_size = |
3643 | qed_ops->common->dbg_all_data_size(qedf->cdev); |
3644 | if (qedf->grcdump_size) { |
3645 | rc = qedf_alloc_grc_dump_buf(buf: &qedf->grcdump, |
3646 | len: qedf->grcdump_size); |
3647 | if (rc) { |
3648 | QEDF_ERR(&(qedf->dbg_ctx), |
3649 | "GRC Dump buffer alloc failed.\n" ); |
3650 | qedf->grcdump = NULL; |
3651 | } |
3652 | |
3653 | QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, |
3654 | "grcdump: addr=%p, size=%u.\n" , |
3655 | qedf->grcdump, qedf->grcdump_size); |
3656 | } |
3657 | qedf_create_sysfs_ctx_attr(qedf); |
3658 | |
3659 | /* Initialize I/O tracing for this adapter */ |
3660 | spin_lock_init(&qedf->io_trace_lock); |
3661 | qedf->io_trace_idx = 0; |
3662 | } |
3663 | |
3664 | init_completion(x: &qedf->flogi_compl); |
3665 | |
3666 | status = qed_ops->common->update_drv_state(qedf->cdev, true); |
3667 | if (status) |
3668 | QEDF_ERR(&(qedf->dbg_ctx), |
3669 | "Failed to send drv state to MFW.\n" ); |
3670 | |
3671 | memset(&link_params, 0, sizeof(struct qed_link_params)); |
3672 | link_params.link_up = true; |
3673 | status = qed_ops->common->set_link(qedf->cdev, &link_params); |
3674 | if (status) |
3675 | QEDF_WARN(&(qedf->dbg_ctx), "set_link failed.\n" ); |
3676 | |
3677 | /* Start/restart discovery */ |
3678 | if (mode == QEDF_MODE_RECOVERY) |
3679 | fcoe_ctlr_link_up(&qedf->ctlr); |
3680 | else |
3681 | fc_fabric_login(lport); |
3682 | |
3683 | QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, "Probe done.\n" ); |
3684 | |
3685 | clear_bit(QEDF_PROBING, addr: &qedf->flags); |
3686 | |
3687 | /* All good */ |
3688 | return 0; |
3689 | |
3690 | err7: |
3691 | if (qedf->ll2_recv_wq) |
3692 | destroy_workqueue(wq: qedf->ll2_recv_wq); |
3693 | fc_remove_host(qedf->lport->host); |
3694 | scsi_remove_host(qedf->lport->host); |
3695 | #ifdef CONFIG_DEBUG_FS |
3696 | qedf_dbg_host_exit(qedf: &(qedf->dbg_ctx)); |
3697 | #endif |
3698 | err6: |
3699 | qedf_cmd_mgr_free(cmgr: qedf->cmd_mgr); |
3700 | err5: |
3701 | qed_ops->stop(qedf->cdev); |
3702 | err4: |
3703 | qedf_free_fcoe_pf_param(qedf); |
3704 | qedf_sync_free_irqs(qedf); |
3705 | err3: |
3706 | qed_ops->common->slowpath_stop(qedf->cdev); |
3707 | err2: |
3708 | qed_ops->common->remove(qedf->cdev); |
3709 | err1: |
3710 | scsi_host_put(t: lport->host); |
3711 | err0: |
3712 | return rc; |
3713 | } |
3714 | |
3715 | static int qedf_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
3716 | { |
3717 | return __qedf_probe(pdev, QEDF_MODE_NORMAL); |
3718 | } |
3719 | |
3720 | static void __qedf_remove(struct pci_dev *pdev, int mode) |
3721 | { |
3722 | struct qedf_ctx *qedf; |
3723 | int rc; |
3724 | |
3725 | if (!pdev) { |
3726 | QEDF_ERR(NULL, "pdev is NULL.\n" ); |
3727 | return; |
3728 | } |
3729 | |
3730 | qedf = pci_get_drvdata(pdev); |
3731 | |
3732 | /* |
3733 | * Prevent race where we're in board disable work and then try to |
3734 | * rmmod the module. |
3735 | */ |
3736 | if (test_bit(QEDF_UNLOADING, &qedf->flags)) { |
3737 | QEDF_ERR(&qedf->dbg_ctx, "Already removing PCI function.\n" ); |
3738 | return; |
3739 | } |
3740 | |
3741 | if (mode != QEDF_MODE_RECOVERY) |
3742 | set_bit(QEDF_UNLOADING, addr: &qedf->flags); |
3743 | |
3744 | /* Logoff the fabric to upload all connections */ |
3745 | if (mode == QEDF_MODE_RECOVERY) |
3746 | fcoe_ctlr_link_down(&qedf->ctlr); |
3747 | else |
3748 | fc_fabric_logoff(qedf->lport); |
3749 | |
3750 | if (!qedf_wait_for_upload(qedf)) |
3751 | QEDF_ERR(&qedf->dbg_ctx, "Could not upload all sessions.\n" ); |
3752 | |
3753 | #ifdef CONFIG_DEBUG_FS |
3754 | qedf_dbg_host_exit(qedf: &(qedf->dbg_ctx)); |
3755 | #endif |
3756 | |
3757 | /* Stop any link update handling */ |
3758 | cancel_delayed_work_sync(dwork: &qedf->link_update); |
3759 | destroy_workqueue(wq: qedf->link_update_wq); |
3760 | qedf->link_update_wq = NULL; |
3761 | |
3762 | if (qedf->timer_work_queue) |
3763 | destroy_workqueue(wq: qedf->timer_work_queue); |
3764 | |
3765 | /* Stop Light L2 */ |
3766 | clear_bit(QEDF_LL2_STARTED, addr: &qedf->flags); |
3767 | qed_ops->ll2->stop(qedf->cdev); |
3768 | if (qedf->ll2_recv_wq) |
3769 | destroy_workqueue(wq: qedf->ll2_recv_wq); |
3770 | |
3771 | /* Stop fastpath */ |
3772 | qedf_sync_free_irqs(qedf); |
3773 | qedf_destroy_sb(qedf); |
3774 | |
3775 | /* |
3776 | * During recovery don't destroy OS constructs that represent the |
3777 | * physical port. |
3778 | */ |
3779 | if (mode != QEDF_MODE_RECOVERY) { |
3780 | qedf_free_grc_dump_buf(buf: &qedf->grcdump); |
3781 | qedf_remove_sysfs_ctx_attr(qedf); |
3782 | |
3783 | /* Remove all SCSI/libfc/libfcoe structures */ |
3784 | fcoe_ctlr_destroy(&qedf->ctlr); |
3785 | fc_lport_destroy(qedf->lport); |
3786 | fc_remove_host(qedf->lport->host); |
3787 | scsi_remove_host(qedf->lport->host); |
3788 | } |
3789 | |
3790 | qedf_cmd_mgr_free(cmgr: qedf->cmd_mgr); |
3791 | |
3792 | if (mode != QEDF_MODE_RECOVERY) { |
3793 | fc_exch_mgr_free(qedf->lport); |
3794 | fc_lport_free_stats(lport: qedf->lport); |
3795 | |
3796 | /* Wait for all vports to be reaped */ |
3797 | qedf_wait_for_vport_destroy(qedf); |
3798 | } |
3799 | |
3800 | /* |
3801 | * Now that all connections have been uploaded we can stop the |
3802 | * rest of the qed operations |
3803 | */ |
3804 | qed_ops->stop(qedf->cdev); |
3805 | |
3806 | if (mode != QEDF_MODE_RECOVERY) { |
3807 | if (qedf->dpc_wq) { |
3808 | /* Stop general DPC handling */ |
3809 | destroy_workqueue(wq: qedf->dpc_wq); |
3810 | qedf->dpc_wq = NULL; |
3811 | } |
3812 | } |
3813 | |
3814 | /* Final shutdown for the board */ |
3815 | qedf_free_fcoe_pf_param(qedf); |
3816 | if (mode != QEDF_MODE_RECOVERY) { |
3817 | qed_ops->common->set_power_state(qedf->cdev, PCI_D0); |
3818 | pci_set_drvdata(pdev, NULL); |
3819 | } |
3820 | |
3821 | rc = qed_ops->common->update_drv_state(qedf->cdev, false); |
3822 | if (rc) |
3823 | QEDF_ERR(&(qedf->dbg_ctx), |
3824 | "Failed to send drv state to MFW.\n" ); |
3825 | |
3826 | if (mode != QEDF_MODE_RECOVERY && qedf->devlink) { |
3827 | qed_ops->common->devlink_unregister(qedf->devlink); |
3828 | qedf->devlink = NULL; |
3829 | } |
3830 | |
3831 | qed_ops->common->slowpath_stop(qedf->cdev); |
3832 | qed_ops->common->remove(qedf->cdev); |
3833 | |
3834 | mempool_destroy(pool: qedf->io_mempool); |
3835 | |
3836 | /* Only reap the Scsi_host on a real removal */ |
3837 | if (mode != QEDF_MODE_RECOVERY) |
3838 | scsi_host_put(t: qedf->lport->host); |
3839 | } |
3840 | |
3841 | static void qedf_remove(struct pci_dev *pdev) |
3842 | { |
3843 | /* Check to make sure this function wasn't already disabled */ |
3844 | if (!atomic_read(v: &pdev->enable_cnt)) |
3845 | return; |
3846 | |
3847 | __qedf_remove(pdev, QEDF_MODE_NORMAL); |
3848 | } |
3849 | |
3850 | void qedf_wq_grcdump(struct work_struct *work) |
3851 | { |
3852 | struct qedf_ctx *qedf = |
3853 | container_of(work, struct qedf_ctx, grcdump_work.work); |
3854 | |
3855 | QEDF_ERR(&(qedf->dbg_ctx), "Collecting GRC dump.\n" ); |
3856 | qedf_capture_grc_dump(qedf); |
3857 | } |
3858 | |
3859 | void qedf_schedule_hw_err_handler(void *dev, enum qed_hw_err_type err_type) |
3860 | { |
3861 | struct qedf_ctx *qedf = dev; |
3862 | |
3863 | QEDF_ERR(&(qedf->dbg_ctx), |
3864 | "Hardware error handler scheduled, event=%d.\n" , |
3865 | err_type); |
3866 | |
3867 | if (test_bit(QEDF_IN_RECOVERY, &qedf->flags)) { |
3868 | QEDF_ERR(&(qedf->dbg_ctx), |
3869 | "Already in recovery, not scheduling board disable work.\n" ); |
3870 | return; |
3871 | } |
3872 | |
3873 | switch (err_type) { |
3874 | case QED_HW_ERR_FAN_FAIL: |
3875 | schedule_delayed_work(dwork: &qedf->board_disable_work, delay: 0); |
3876 | break; |
3877 | case QED_HW_ERR_MFW_RESP_FAIL: |
3878 | case QED_HW_ERR_HW_ATTN: |
3879 | case QED_HW_ERR_DMAE_FAIL: |
3880 | case QED_HW_ERR_FW_ASSERT: |
3881 | /* Prevent HW attentions from being reasserted */ |
3882 | qed_ops->common->attn_clr_enable(qedf->cdev, true); |
3883 | break; |
3884 | case QED_HW_ERR_RAMROD_FAIL: |
3885 | /* Prevent HW attentions from being reasserted */ |
3886 | qed_ops->common->attn_clr_enable(qedf->cdev, true); |
3887 | |
3888 | if (qedf_enable_recovery && qedf->devlink) |
3889 | qed_ops->common->report_fatal_error(qedf->devlink, |
3890 | err_type); |
3891 | |
3892 | break; |
3893 | default: |
3894 | break; |
3895 | } |
3896 | } |
3897 | |
3898 | /* |
3899 | * Protocol TLV handler |
3900 | */ |
3901 | void qedf_get_protocol_tlv_data(void *dev, void *data) |
3902 | { |
3903 | struct qedf_ctx *qedf = dev; |
3904 | struct qed_mfw_tlv_fcoe *fcoe = data; |
3905 | struct fc_lport *lport; |
3906 | struct Scsi_Host *host; |
3907 | struct fc_host_attrs *fc_host; |
3908 | struct fc_host_statistics *hst; |
3909 | |
3910 | if (!qedf) { |
3911 | QEDF_ERR(NULL, "qedf is null.\n" ); |
3912 | return; |
3913 | } |
3914 | |
3915 | if (test_bit(QEDF_PROBING, &qedf->flags)) { |
3916 | QEDF_ERR(&qedf->dbg_ctx, "Function is still probing.\n" ); |
3917 | return; |
3918 | } |
3919 | |
3920 | lport = qedf->lport; |
3921 | host = lport->host; |
3922 | fc_host = shost_to_fc_host(host); |
3923 | |
3924 | /* Force a refresh of the fc_host stats including offload stats */ |
3925 | hst = qedf_fc_get_host_stats(shost: host); |
3926 | |
3927 | fcoe->qos_pri_set = true; |
3928 | fcoe->qos_pri = 3; /* Hard coded to 3 in driver */ |
3929 | |
3930 | fcoe->ra_tov_set = true; |
3931 | fcoe->ra_tov = lport->r_a_tov; |
3932 | |
3933 | fcoe->ed_tov_set = true; |
3934 | fcoe->ed_tov = lport->e_d_tov; |
3935 | |
3936 | fcoe->npiv_state_set = true; |
3937 | fcoe->npiv_state = 1; /* NPIV always enabled */ |
3938 | |
3939 | fcoe->num_npiv_ids_set = true; |
3940 | fcoe->num_npiv_ids = fc_host->npiv_vports_inuse; |
3941 | |
3942 | /* Certain attributes we only want to set if we've selected an FCF */ |
3943 | if (qedf->ctlr.sel_fcf) { |
3944 | fcoe->switch_name_set = true; |
3945 | u64_to_wwn(inm: qedf->ctlr.sel_fcf->switch_name, wwn: fcoe->switch_name); |
3946 | } |
3947 | |
3948 | fcoe->port_state_set = true; |
3949 | /* For qedf we're either link down or fabric attach */ |
3950 | if (lport->link_up) |
3951 | fcoe->port_state = QED_MFW_TLV_PORT_STATE_FABRIC; |
3952 | else |
3953 | fcoe->port_state = QED_MFW_TLV_PORT_STATE_OFFLINE; |
3954 | |
3955 | fcoe->link_failures_set = true; |
3956 | fcoe->link_failures = (u16)hst->link_failure_count; |
3957 | |
3958 | fcoe->fcoe_txq_depth_set = true; |
3959 | fcoe->fcoe_rxq_depth_set = true; |
3960 | fcoe->fcoe_rxq_depth = FCOE_PARAMS_NUM_TASKS; |
3961 | fcoe->fcoe_txq_depth = FCOE_PARAMS_NUM_TASKS; |
3962 | |
3963 | fcoe->fcoe_rx_frames_set = true; |
3964 | fcoe->fcoe_rx_frames = hst->rx_frames; |
3965 | |
3966 | fcoe->fcoe_tx_frames_set = true; |
3967 | fcoe->fcoe_tx_frames = hst->tx_frames; |
3968 | |
3969 | fcoe->fcoe_rx_bytes_set = true; |
3970 | fcoe->fcoe_rx_bytes = hst->fcp_input_megabytes * 1000000; |
3971 | |
3972 | fcoe->fcoe_tx_bytes_set = true; |
3973 | fcoe->fcoe_tx_bytes = hst->fcp_output_megabytes * 1000000; |
3974 | |
3975 | fcoe->crc_count_set = true; |
3976 | fcoe->crc_count = hst->invalid_crc_count; |
3977 | |
3978 | fcoe->tx_abts_set = true; |
3979 | fcoe->tx_abts = hst->fcp_packet_aborts; |
3980 | |
3981 | fcoe->tx_lun_rst_set = true; |
3982 | fcoe->tx_lun_rst = qedf->lun_resets; |
3983 | |
3984 | fcoe->abort_task_sets_set = true; |
3985 | fcoe->abort_task_sets = qedf->packet_aborts; |
3986 | |
3987 | fcoe->scsi_busy_set = true; |
3988 | fcoe->scsi_busy = qedf->busy; |
3989 | |
3990 | fcoe->scsi_tsk_full_set = true; |
3991 | fcoe->scsi_tsk_full = qedf->task_set_fulls; |
3992 | } |
3993 | |
3994 | /* Deferred work function to perform soft context reset on STAG change */ |
3995 | void qedf_stag_change_work(struct work_struct *work) |
3996 | { |
3997 | struct qedf_ctx *qedf = |
3998 | container_of(work, struct qedf_ctx, stag_work.work); |
3999 | |
4000 | printk_ratelimited("[%s]:[%s:%d]:%d: Performing software context reset." , |
4001 | dev_name(&qedf->pdev->dev), __func__, __LINE__, |
4002 | qedf->dbg_ctx.host_no); |
4003 | qedf_ctx_soft_reset(lport: qedf->lport); |
4004 | } |
4005 | |
4006 | static void qedf_shutdown(struct pci_dev *pdev) |
4007 | { |
4008 | __qedf_remove(pdev, QEDF_MODE_NORMAL); |
4009 | } |
4010 | |
4011 | static int qedf_suspend(struct pci_dev *pdev, pm_message_t state) |
4012 | { |
4013 | struct qedf_ctx *qedf; |
4014 | |
4015 | if (!pdev) { |
4016 | QEDF_ERR(NULL, "pdev is NULL.\n" ); |
4017 | return -ENODEV; |
4018 | } |
4019 | |
4020 | qedf = pci_get_drvdata(pdev); |
4021 | |
4022 | QEDF_ERR(&qedf->dbg_ctx, "%s: Device does not support suspend operation\n" , __func__); |
4023 | |
4024 | return -EPERM; |
4025 | } |
4026 | |
4027 | /* |
4028 | * Recovery handler code |
4029 | */ |
4030 | static void qedf_schedule_recovery_handler(void *dev) |
4031 | { |
4032 | struct qedf_ctx *qedf = dev; |
4033 | |
4034 | QEDF_ERR(&qedf->dbg_ctx, "Recovery handler scheduled.\n" ); |
4035 | schedule_delayed_work(dwork: &qedf->recovery_work, delay: 0); |
4036 | } |
4037 | |
4038 | static void qedf_recovery_handler(struct work_struct *work) |
4039 | { |
4040 | struct qedf_ctx *qedf = |
4041 | container_of(work, struct qedf_ctx, recovery_work.work); |
4042 | |
4043 | if (test_and_set_bit(QEDF_IN_RECOVERY, addr: &qedf->flags)) |
4044 | return; |
4045 | |
4046 | /* |
4047 | * Call common_ops->recovery_prolog to allow the MFW to quiesce |
4048 | * any PCI transactions. |
4049 | */ |
4050 | qed_ops->common->recovery_prolog(qedf->cdev); |
4051 | |
4052 | QEDF_ERR(&qedf->dbg_ctx, "Recovery work start.\n" ); |
4053 | __qedf_remove(pdev: qedf->pdev, QEDF_MODE_RECOVERY); |
4054 | /* |
4055 | * Reset link and dcbx to down state since we will not get a link down |
4056 | * event from the MFW but calling __qedf_remove will essentially be a |
4057 | * link down event. |
4058 | */ |
4059 | atomic_set(v: &qedf->link_state, QEDF_LINK_DOWN); |
4060 | atomic_set(v: &qedf->dcbx, QEDF_DCBX_PENDING); |
4061 | __qedf_probe(pdev: qedf->pdev, QEDF_MODE_RECOVERY); |
4062 | clear_bit(QEDF_IN_RECOVERY, addr: &qedf->flags); |
4063 | QEDF_ERR(&qedf->dbg_ctx, "Recovery work complete.\n" ); |
4064 | } |
4065 | |
4066 | /* Generic TLV data callback */ |
4067 | void qedf_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data) |
4068 | { |
4069 | struct qedf_ctx *qedf; |
4070 | |
4071 | if (!dev) { |
4072 | QEDF_INFO(NULL, QEDF_LOG_EVT, |
4073 | "dev is NULL so ignoring get_generic_tlv_data request.\n" ); |
4074 | return; |
4075 | } |
4076 | qedf = (struct qedf_ctx *)dev; |
4077 | |
4078 | memset(data, 0, sizeof(struct qed_generic_tlvs)); |
4079 | ether_addr_copy(dst: data->mac[0], src: qedf->mac); |
4080 | } |
4081 | |
4082 | /* |
4083 | * Module Init/Remove |
4084 | */ |
4085 | |
4086 | static int __init qedf_init(void) |
4087 | { |
4088 | int ret; |
4089 | |
4090 | /* If debug=1 passed, set the default log mask */ |
4091 | if (qedf_debug == QEDF_LOG_DEFAULT) |
4092 | qedf_debug = QEDF_DEFAULT_LOG_MASK; |
4093 | |
4094 | /* |
4095 | * Check that default prio for FIP/FCoE traffic is between 0..7 if a |
4096 | * value has been set |
4097 | */ |
4098 | if (qedf_default_prio > -1) |
4099 | if (qedf_default_prio > 7) { |
4100 | qedf_default_prio = QEDF_DEFAULT_PRIO; |
4101 | QEDF_ERR(NULL, "FCoE/FIP priority out of range, resetting to %d.\n" , |
4102 | QEDF_DEFAULT_PRIO); |
4103 | } |
4104 | |
4105 | /* Print driver banner */ |
4106 | QEDF_INFO(NULL, QEDF_LOG_INFO, "%s v%s.\n" , QEDF_DESCR, |
4107 | QEDF_VERSION); |
4108 | |
4109 | /* Create kmem_cache for qedf_io_work structs */ |
4110 | qedf_io_work_cache = kmem_cache_create(name: "qedf_io_work_cache" , |
4111 | size: sizeof(struct qedf_io_work), align: 0, SLAB_HWCACHE_ALIGN, NULL); |
4112 | if (qedf_io_work_cache == NULL) { |
4113 | QEDF_ERR(NULL, "qedf_io_work_cache is NULL.\n" ); |
4114 | goto err1; |
4115 | } |
4116 | QEDF_INFO(NULL, QEDF_LOG_DISC, "qedf_io_work_cache=%p.\n" , |
4117 | qedf_io_work_cache); |
4118 | |
4119 | qed_ops = qed_get_fcoe_ops(); |
4120 | if (!qed_ops) { |
4121 | QEDF_ERR(NULL, "Failed to get qed fcoe operations\n" ); |
4122 | goto err1; |
4123 | } |
4124 | |
4125 | #ifdef CONFIG_DEBUG_FS |
4126 | qedf_dbg_init(drv_name: "qedf" ); |
4127 | #endif |
4128 | |
4129 | qedf_fc_transport_template = |
4130 | fc_attach_transport(&qedf_fc_transport_fn); |
4131 | if (!qedf_fc_transport_template) { |
4132 | QEDF_ERR(NULL, "Could not register with FC transport\n" ); |
4133 | goto err2; |
4134 | } |
4135 | |
4136 | qedf_fc_vport_transport_template = |
4137 | fc_attach_transport(&qedf_fc_vport_transport_fn); |
4138 | if (!qedf_fc_vport_transport_template) { |
4139 | QEDF_ERR(NULL, "Could not register vport template with FC " |
4140 | "transport\n" ); |
4141 | goto err3; |
4142 | } |
4143 | |
4144 | qedf_io_wq = create_workqueue("qedf_io_wq" ); |
4145 | if (!qedf_io_wq) { |
4146 | QEDF_ERR(NULL, "Could not create qedf_io_wq.\n" ); |
4147 | goto err4; |
4148 | } |
4149 | |
4150 | qedf_cb_ops.get_login_failures = qedf_get_login_failures; |
4151 | |
4152 | ret = pci_register_driver(&qedf_pci_driver); |
4153 | if (ret) { |
4154 | QEDF_ERR(NULL, "Failed to register driver\n" ); |
4155 | goto err5; |
4156 | } |
4157 | |
4158 | return 0; |
4159 | |
4160 | err5: |
4161 | destroy_workqueue(wq: qedf_io_wq); |
4162 | err4: |
4163 | fc_release_transport(qedf_fc_vport_transport_template); |
4164 | err3: |
4165 | fc_release_transport(qedf_fc_transport_template); |
4166 | err2: |
4167 | #ifdef CONFIG_DEBUG_FS |
4168 | qedf_dbg_exit(); |
4169 | #endif |
4170 | qed_put_fcoe_ops(); |
4171 | err1: |
4172 | return -EINVAL; |
4173 | } |
4174 | |
4175 | static void __exit qedf_cleanup(void) |
4176 | { |
4177 | pci_unregister_driver(dev: &qedf_pci_driver); |
4178 | |
4179 | destroy_workqueue(wq: qedf_io_wq); |
4180 | |
4181 | fc_release_transport(qedf_fc_vport_transport_template); |
4182 | fc_release_transport(qedf_fc_transport_template); |
4183 | #ifdef CONFIG_DEBUG_FS |
4184 | qedf_dbg_exit(); |
4185 | #endif |
4186 | qed_put_fcoe_ops(); |
4187 | |
4188 | kmem_cache_destroy(s: qedf_io_work_cache); |
4189 | } |
4190 | |
4191 | MODULE_LICENSE("GPL" ); |
4192 | MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx FCoE Module" ); |
4193 | MODULE_AUTHOR("QLogic Corporation" ); |
4194 | MODULE_VERSION(QEDF_VERSION); |
4195 | module_init(qedf_init); |
4196 | module_exit(qedf_cleanup); |
4197 | |