1 /*
2 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
3 * All rights reserved
4 * www.brocade.com
5 *
6 * Linux driver for Brocade Fibre Channel Host Bus Adapter.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License (GPL) Version 2 as
10 * published by the Free Software Foundation
11 *
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 */
17
18 /*
19 * bfad.c Linux driver PCI interface module.
20 */
21 #include <linux/module.h>
22 #include <linux/kthread.h>
23 #include <linux/errno.h>
24 #include <linux/sched.h>
25 #include <linux/init.h>
26 #include <linux/fs.h>
27 #include <linux/pci.h>
28 #include <linux/firmware.h>
29 #include <asm/uaccess.h>
30 #include <asm/fcntl.h>
31
32 #include "bfad_drv.h"
33 #include "bfad_im.h"
34 #include "bfa_fcs.h"
35 #include "bfa_defs.h"
36 #include "bfa.h"
37
38 BFA_TRC_FILE(LDRV, BFAD);
39 DEFINE_MUTEX(bfad_mutex);
40 LIST_HEAD(bfad_list);
41
42 static int bfad_inst;
43 static int num_sgpgs_parm;
44 int supported_fc4s;
45 char *host_name, *os_name, *os_patch;
46 int num_rports, num_ios, num_tms;
47 int num_fcxps, num_ufbufs;
48 int reqq_size, rspq_size, num_sgpgs;
49 int rport_del_timeout = BFA_FCS_RPORT_DEF_DEL_TIMEOUT;
50 int bfa_lun_queue_depth = BFAD_LUN_QUEUE_DEPTH;
51 int bfa_io_max_sge = BFAD_IO_MAX_SGE;
52 int bfa_log_level = 3; /* WARNING log level */
53 int ioc_auto_recover = BFA_TRUE;
54 int bfa_linkup_delay = -1;
55 int fdmi_enable = BFA_TRUE;
56 int pcie_max_read_reqsz;
57 int bfa_debugfs_enable = 1;
58 int msix_disable_cb = 0, msix_disable_ct = 0;
59 int max_xfer_size = BFAD_MAX_SECTORS >> 1;
60
61 /* Firmware releated */
62 u32 bfi_image_cb_size, bfi_image_ct_size, bfi_image_ct2_size;
63 u32 *bfi_image_cb, *bfi_image_ct, *bfi_image_ct2;
64
65 #define BFAD_FW_FILE_CB "cbfw.bin"
66 #define BFAD_FW_FILE_CT "ctfw.bin"
67 #define BFAD_FW_FILE_CT2 "ct2fw.bin"
68
69 static u32 *bfad_load_fwimg(struct pci_dev *pdev);
70 static void bfad_free_fwimg(void);
71 static void bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
72 u32 *bfi_image_size, char *fw_name);
73
74 static const char *msix_name_ct[] = {
75 "ctrl",
76 "cpe0", "cpe1", "cpe2", "cpe3",
77 "rme0", "rme1", "rme2", "rme3" };
78
79 static const char *msix_name_cb[] = {
80 "cpe0", "cpe1", "cpe2", "cpe3",
81 "rme0", "rme1", "rme2", "rme3",
82 "eemc", "elpu0", "elpu1", "epss", "mlpu" };
83
84 MODULE_FIRMWARE(BFAD_FW_FILE_CB);
85 MODULE_FIRMWARE(BFAD_FW_FILE_CT);
86 MODULE_FIRMWARE(BFAD_FW_FILE_CT2);
87
88 module_param(os_name, charp, S_IRUGO | S_IWUSR);
89 MODULE_PARM_DESC(os_name, "OS name of the hba host machine");
90 module_param(os_patch, charp, S_IRUGO | S_IWUSR);
91 MODULE_PARM_DESC(os_patch, "OS patch level of the hba host machine");
92 module_param(host_name, charp, S_IRUGO | S_IWUSR);
93 MODULE_PARM_DESC(host_name, "Hostname of the hba host machine");
94 module_param(num_rports, int, S_IRUGO | S_IWUSR);
95 MODULE_PARM_DESC(num_rports, "Max number of rports supported per port "
96 "(physical/logical), default=1024");
97 module_param(num_ios, int, S_IRUGO | S_IWUSR);
98 MODULE_PARM_DESC(num_ios, "Max number of ioim requests, default=2000");
99 module_param(num_tms, int, S_IRUGO | S_IWUSR);
100 MODULE_PARM_DESC(num_tms, "Max number of task im requests, default=128");
101 module_param(num_fcxps, int, S_IRUGO | S_IWUSR);
102 MODULE_PARM_DESC(num_fcxps, "Max number of fcxp requests, default=64");
103 module_param(num_ufbufs, int, S_IRUGO | S_IWUSR);
104 MODULE_PARM_DESC(num_ufbufs, "Max number of unsolicited frame "
105 "buffers, default=64");
106 module_param(reqq_size, int, S_IRUGO | S_IWUSR);
107 MODULE_PARM_DESC(reqq_size, "Max number of request queue elements, "
108 "default=256");
109 module_param(rspq_size, int, S_IRUGO | S_IWUSR);
110 MODULE_PARM_DESC(rspq_size, "Max number of response queue elements, "
111 "default=64");
112 module_param(num_sgpgs, int, S_IRUGO | S_IWUSR);
113 MODULE_PARM_DESC(num_sgpgs, "Number of scatter/gather pages, default=2048");
114 module_param(rport_del_timeout, int, S_IRUGO | S_IWUSR);
115 MODULE_PARM_DESC(rport_del_timeout, "Rport delete timeout, default=90 secs, "
116 "Range[>0]");
117 module_param(bfa_lun_queue_depth, int, S_IRUGO | S_IWUSR);
118 MODULE_PARM_DESC(bfa_lun_queue_depth, "Lun queue depth, default=32, Range[>0]");
119 module_param(bfa_io_max_sge, int, S_IRUGO | S_IWUSR);
120 MODULE_PARM_DESC(bfa_io_max_sge, "Max io scatter/gather elements, default=255");
121 module_param(bfa_log_level, int, S_IRUGO | S_IWUSR);
122 MODULE_PARM_DESC(bfa_log_level, "Driver log level, default=3, "
123 "Range[Critical:1|Error:2|Warning:3|Info:4]");
124 module_param(ioc_auto_recover, int, S_IRUGO | S_IWUSR);
125 MODULE_PARM_DESC(ioc_auto_recover, "IOC auto recovery, default=1, "
126 "Range[off:0|on:1]");
127 module_param(bfa_linkup_delay, int, S_IRUGO | S_IWUSR);
128 MODULE_PARM_DESC(bfa_linkup_delay, "Link up delay, default=30 secs for "
129 "boot port. Otherwise 10 secs in RHEL4 & 0 for "
130 "[RHEL5, SLES10, ESX40] Range[>0]");
131 module_param(msix_disable_cb, int, S_IRUGO | S_IWUSR);
132 MODULE_PARM_DESC(msix_disable_cb, "Disable Message Signaled Interrupts "
133 "for Brocade-415/425/815/825 cards, default=0, "
134 " Range[false:0|true:1]");
135 module_param(msix_disable_ct, int, S_IRUGO | S_IWUSR);
136 MODULE_PARM_DESC(msix_disable_ct, "Disable Message Signaled Interrupts "
137 "if possible for Brocade-1010/1020/804/1007/902/1741 "
138 "cards, default=0, Range[false:0|true:1]");
139 module_param(fdmi_enable, int, S_IRUGO | S_IWUSR);
140 MODULE_PARM_DESC(fdmi_enable, "Enables fdmi registration, default=1, "
141 "Range[false:0|true:1]");
142 module_param(pcie_max_read_reqsz, int, S_IRUGO | S_IWUSR);
143 MODULE_PARM_DESC(pcie_max_read_reqsz, "PCIe max read request size, default=0 "
144 "(use system setting), Range[128|256|512|1024|2048|4096]");
145 module_param(bfa_debugfs_enable, int, S_IRUGO | S_IWUSR);
146 MODULE_PARM_DESC(bfa_debugfs_enable, "Enables debugfs feature, default=1,"
147 " Range[false:0|true:1]");
148 module_param(max_xfer_size, int, S_IRUGO | S_IWUSR);
149 MODULE_PARM_DESC(max_xfer_size, "default=32MB,"
150 " Range[64k|128k|256k|512k|1024k|2048k]");
151
152 static void
153 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event);
154 static void
155 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event);
156 static void
157 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event);
158 static void
159 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event);
160 static void
161 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event);
162 static void
163 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event);
164 static void
165 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event);
166
167 /*
168 * Beginning state for the driver instance, awaiting the pci_probe event
169 */
170 static void
bfad_sm_uninit(struct bfad_s * bfad,enum bfad_sm_event event)171 bfad_sm_uninit(struct bfad_s *bfad, enum bfad_sm_event event)
172 {
173 bfa_trc(bfad, event);
174
175 switch (event) {
176 case BFAD_E_CREATE:
177 bfa_sm_set_state(bfad, bfad_sm_created);
178 bfad->bfad_tsk = kthread_create(bfad_worker, (void *) bfad,
179 "%s", "bfad_worker");
180 if (IS_ERR(bfad->bfad_tsk)) {
181 printk(KERN_INFO "bfad[%d]: Kernel thread "
182 "creation failed!\n", bfad->inst_no);
183 bfa_sm_send_event(bfad, BFAD_E_KTHREAD_CREATE_FAILED);
184 }
185 bfa_sm_send_event(bfad, BFAD_E_INIT);
186 break;
187
188 case BFAD_E_STOP:
189 /* Ignore stop; already in uninit */
190 break;
191
192 default:
193 bfa_sm_fault(bfad, event);
194 }
195 }
196
197 /*
198 * Driver Instance is created, awaiting event INIT to initialize the bfad
199 */
200 static void
bfad_sm_created(struct bfad_s * bfad,enum bfad_sm_event event)201 bfad_sm_created(struct bfad_s *bfad, enum bfad_sm_event event)
202 {
203 unsigned long flags;
204
205 bfa_trc(bfad, event);
206
207 switch (event) {
208 case BFAD_E_INIT:
209 bfa_sm_set_state(bfad, bfad_sm_initializing);
210
211 init_completion(&bfad->comp);
212
213 /* Enable Interrupt and wait bfa_init completion */
214 if (bfad_setup_intr(bfad)) {
215 printk(KERN_WARNING "bfad%d: bfad_setup_intr failed\n",
216 bfad->inst_no);
217 bfa_sm_send_event(bfad, BFAD_E_INTR_INIT_FAILED);
218 break;
219 }
220
221 spin_lock_irqsave(&bfad->bfad_lock, flags);
222 bfa_iocfc_init(&bfad->bfa);
223 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
224
225 /* Set up interrupt handler for each vectors */
226 if ((bfad->bfad_flags & BFAD_MSIX_ON) &&
227 bfad_install_msix_handler(bfad)) {
228 printk(KERN_WARNING "%s: install_msix failed, bfad%d\n",
229 __func__, bfad->inst_no);
230 }
231
232 bfad_init_timer(bfad);
233
234 wait_for_completion(&bfad->comp);
235
236 if ((bfad->bfad_flags & BFAD_HAL_INIT_DONE)) {
237 bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
238 } else {
239 printk(KERN_WARNING
240 "bfa %s: bfa init failed\n",
241 bfad->pci_name);
242 bfad->bfad_flags |= BFAD_HAL_INIT_FAIL;
243 bfa_sm_send_event(bfad, BFAD_E_INIT_FAILED);
244 }
245
246 break;
247
248 case BFAD_E_KTHREAD_CREATE_FAILED:
249 bfa_sm_set_state(bfad, bfad_sm_uninit);
250 break;
251
252 default:
253 bfa_sm_fault(bfad, event);
254 }
255 }
256
257 static void
bfad_sm_initializing(struct bfad_s * bfad,enum bfad_sm_event event)258 bfad_sm_initializing(struct bfad_s *bfad, enum bfad_sm_event event)
259 {
260 int retval;
261 unsigned long flags;
262
263 bfa_trc(bfad, event);
264
265 switch (event) {
266 case BFAD_E_INIT_SUCCESS:
267 kthread_stop(bfad->bfad_tsk);
268 spin_lock_irqsave(&bfad->bfad_lock, flags);
269 bfad->bfad_tsk = NULL;
270 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
271
272 retval = bfad_start_ops(bfad);
273 if (retval != BFA_STATUS_OK)
274 break;
275 bfa_sm_set_state(bfad, bfad_sm_operational);
276 break;
277
278 case BFAD_E_INTR_INIT_FAILED:
279 bfa_sm_set_state(bfad, bfad_sm_uninit);
280 kthread_stop(bfad->bfad_tsk);
281 spin_lock_irqsave(&bfad->bfad_lock, flags);
282 bfad->bfad_tsk = NULL;
283 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
284 break;
285
286 case BFAD_E_INIT_FAILED:
287 bfa_sm_set_state(bfad, bfad_sm_failed);
288 break;
289 default:
290 bfa_sm_fault(bfad, event);
291 }
292 }
293
294 static void
bfad_sm_failed(struct bfad_s * bfad,enum bfad_sm_event event)295 bfad_sm_failed(struct bfad_s *bfad, enum bfad_sm_event event)
296 {
297 int retval;
298
299 bfa_trc(bfad, event);
300
301 switch (event) {
302 case BFAD_E_INIT_SUCCESS:
303 retval = bfad_start_ops(bfad);
304 if (retval != BFA_STATUS_OK)
305 break;
306 bfa_sm_set_state(bfad, bfad_sm_operational);
307 break;
308
309 case BFAD_E_STOP:
310 if (bfad->bfad_flags & BFAD_CFG_PPORT_DONE)
311 bfad_uncfg_pport(bfad);
312 if (bfad->bfad_flags & BFAD_FC4_PROBE_DONE) {
313 bfad_im_probe_undo(bfad);
314 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
315 }
316 bfad_stop(bfad);
317 break;
318
319 case BFAD_E_EXIT_COMP:
320 bfa_sm_set_state(bfad, bfad_sm_uninit);
321 bfad_remove_intr(bfad);
322 del_timer_sync(&bfad->hal_tmo);
323 break;
324
325 default:
326 bfa_sm_fault(bfad, event);
327 }
328 }
329
330 static void
bfad_sm_operational(struct bfad_s * bfad,enum bfad_sm_event event)331 bfad_sm_operational(struct bfad_s *bfad, enum bfad_sm_event event)
332 {
333 bfa_trc(bfad, event);
334
335 switch (event) {
336 case BFAD_E_STOP:
337 bfa_sm_set_state(bfad, bfad_sm_fcs_exit);
338 bfad_fcs_stop(bfad);
339 break;
340
341 default:
342 bfa_sm_fault(bfad, event);
343 }
344 }
345
346 static void
bfad_sm_fcs_exit(struct bfad_s * bfad,enum bfad_sm_event event)347 bfad_sm_fcs_exit(struct bfad_s *bfad, enum bfad_sm_event event)
348 {
349 bfa_trc(bfad, event);
350
351 switch (event) {
352 case BFAD_E_FCS_EXIT_COMP:
353 bfa_sm_set_state(bfad, bfad_sm_stopping);
354 bfad_stop(bfad);
355 break;
356
357 default:
358 bfa_sm_fault(bfad, event);
359 }
360 }
361
362 static void
bfad_sm_stopping(struct bfad_s * bfad,enum bfad_sm_event event)363 bfad_sm_stopping(struct bfad_s *bfad, enum bfad_sm_event event)
364 {
365 bfa_trc(bfad, event);
366
367 switch (event) {
368 case BFAD_E_EXIT_COMP:
369 bfa_sm_set_state(bfad, bfad_sm_uninit);
370 bfad_remove_intr(bfad);
371 del_timer_sync(&bfad->hal_tmo);
372 bfad_im_probe_undo(bfad);
373 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
374 bfad_uncfg_pport(bfad);
375 break;
376
377 default:
378 bfa_sm_fault(bfad, event);
379 break;
380 }
381 }
382
383 /*
384 * BFA callbacks
385 */
386 void
bfad_hcb_comp(void * arg,bfa_status_t status)387 bfad_hcb_comp(void *arg, bfa_status_t status)
388 {
389 struct bfad_hal_comp *fcomp = (struct bfad_hal_comp *)arg;
390
391 fcomp->status = status;
392 complete(&fcomp->comp);
393 }
394
395 /*
396 * bfa_init callback
397 */
398 void
bfa_cb_init(void * drv,bfa_status_t init_status)399 bfa_cb_init(void *drv, bfa_status_t init_status)
400 {
401 struct bfad_s *bfad = drv;
402
403 if (init_status == BFA_STATUS_OK) {
404 bfad->bfad_flags |= BFAD_HAL_INIT_DONE;
405
406 /*
407 * If BFAD_HAL_INIT_FAIL flag is set:
408 * Wake up the kernel thread to start
409 * the bfad operations after HAL init done
410 */
411 if ((bfad->bfad_flags & BFAD_HAL_INIT_FAIL)) {
412 bfad->bfad_flags &= ~BFAD_HAL_INIT_FAIL;
413 wake_up_process(bfad->bfad_tsk);
414 }
415 }
416
417 complete(&bfad->comp);
418 }
419
420 /*
421 * BFA_FCS callbacks
422 */
423 struct bfad_port_s *
bfa_fcb_lport_new(struct bfad_s * bfad,struct bfa_fcs_lport_s * port,enum bfa_lport_role roles,struct bfad_vf_s * vf_drv,struct bfad_vport_s * vp_drv)424 bfa_fcb_lport_new(struct bfad_s *bfad, struct bfa_fcs_lport_s *port,
425 enum bfa_lport_role roles, struct bfad_vf_s *vf_drv,
426 struct bfad_vport_s *vp_drv)
427 {
428 bfa_status_t rc;
429 struct bfad_port_s *port_drv;
430
431 if (!vp_drv && !vf_drv) {
432 port_drv = &bfad->pport;
433 port_drv->pvb_type = BFAD_PORT_PHYS_BASE;
434 } else if (!vp_drv && vf_drv) {
435 port_drv = &vf_drv->base_port;
436 port_drv->pvb_type = BFAD_PORT_VF_BASE;
437 } else if (vp_drv && !vf_drv) {
438 port_drv = &vp_drv->drv_port;
439 port_drv->pvb_type = BFAD_PORT_PHYS_VPORT;
440 } else {
441 port_drv = &vp_drv->drv_port;
442 port_drv->pvb_type = BFAD_PORT_VF_VPORT;
443 }
444
445 port_drv->fcs_port = port;
446 port_drv->roles = roles;
447
448 if (roles & BFA_LPORT_ROLE_FCP_IM) {
449 rc = bfad_im_port_new(bfad, port_drv);
450 if (rc != BFA_STATUS_OK) {
451 bfad_im_port_delete(bfad, port_drv);
452 port_drv = NULL;
453 }
454 }
455
456 return port_drv;
457 }
458
459 void
bfa_fcb_lport_delete(struct bfad_s * bfad,enum bfa_lport_role roles,struct bfad_vf_s * vf_drv,struct bfad_vport_s * vp_drv)460 bfa_fcb_lport_delete(struct bfad_s *bfad, enum bfa_lport_role roles,
461 struct bfad_vf_s *vf_drv, struct bfad_vport_s *vp_drv)
462 {
463 struct bfad_port_s *port_drv;
464
465 /* this will be only called from rmmod context */
466 if (vp_drv && !vp_drv->comp_del) {
467 port_drv = (vp_drv) ? (&(vp_drv)->drv_port) :
468 ((vf_drv) ? (&(vf_drv)->base_port) :
469 (&(bfad)->pport));
470 bfa_trc(bfad, roles);
471 if (roles & BFA_LPORT_ROLE_FCP_IM)
472 bfad_im_port_delete(bfad, port_drv);
473 }
474 }
475
476 /*
477 * FCS RPORT alloc callback, after successful PLOGI by FCS
478 */
479 bfa_status_t
bfa_fcb_rport_alloc(struct bfad_s * bfad,struct bfa_fcs_rport_s ** rport,struct bfad_rport_s ** rport_drv)480 bfa_fcb_rport_alloc(struct bfad_s *bfad, struct bfa_fcs_rport_s **rport,
481 struct bfad_rport_s **rport_drv)
482 {
483 bfa_status_t rc = BFA_STATUS_OK;
484
485 *rport_drv = kzalloc(sizeof(struct bfad_rport_s), GFP_ATOMIC);
486 if (*rport_drv == NULL) {
487 rc = BFA_STATUS_ENOMEM;
488 goto ext;
489 }
490
491 *rport = &(*rport_drv)->fcs_rport;
492
493 ext:
494 return rc;
495 }
496
497 /*
498 * FCS PBC VPORT Create
499 */
500 void
bfa_fcb_pbc_vport_create(struct bfad_s * bfad,struct bfi_pbc_vport_s pbc_vport)501 bfa_fcb_pbc_vport_create(struct bfad_s *bfad, struct bfi_pbc_vport_s pbc_vport)
502 {
503
504 struct bfa_lport_cfg_s port_cfg = {0};
505 struct bfad_vport_s *vport;
506 int rc;
507
508 vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
509 if (!vport) {
510 bfa_trc(bfad, 0);
511 return;
512 }
513
514 vport->drv_port.bfad = bfad;
515 port_cfg.roles = BFA_LPORT_ROLE_FCP_IM;
516 port_cfg.pwwn = pbc_vport.vp_pwwn;
517 port_cfg.nwwn = pbc_vport.vp_nwwn;
518 port_cfg.preboot_vp = BFA_TRUE;
519
520 rc = bfa_fcs_pbc_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, 0,
521 &port_cfg, vport);
522
523 if (rc != BFA_STATUS_OK) {
524 bfa_trc(bfad, 0);
525 return;
526 }
527
528 list_add_tail(&vport->list_entry, &bfad->pbc_vport_list);
529 }
530
531 void
bfad_hal_mem_release(struct bfad_s * bfad)532 bfad_hal_mem_release(struct bfad_s *bfad)
533 {
534 struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
535 struct bfa_mem_dma_s *dma_info, *dma_elem;
536 struct bfa_mem_kva_s *kva_info, *kva_elem;
537 struct list_head *dm_qe, *km_qe;
538
539 dma_info = &hal_meminfo->dma_info;
540 kva_info = &hal_meminfo->kva_info;
541
542 /* Iterate through the KVA meminfo queue */
543 list_for_each(km_qe, &kva_info->qe) {
544 kva_elem = (struct bfa_mem_kva_s *) km_qe;
545 vfree(kva_elem->kva);
546 }
547
548 /* Iterate through the DMA meminfo queue */
549 list_for_each(dm_qe, &dma_info->qe) {
550 dma_elem = (struct bfa_mem_dma_s *) dm_qe;
551 dma_free_coherent(&bfad->pcidev->dev,
552 dma_elem->mem_len, dma_elem->kva,
553 (dma_addr_t) dma_elem->dma);
554 }
555
556 memset(hal_meminfo, 0, sizeof(struct bfa_meminfo_s));
557 }
558
559 void
bfad_update_hal_cfg(struct bfa_iocfc_cfg_s * bfa_cfg)560 bfad_update_hal_cfg(struct bfa_iocfc_cfg_s *bfa_cfg)
561 {
562 if (num_rports > 0)
563 bfa_cfg->fwcfg.num_rports = num_rports;
564 if (num_ios > 0)
565 bfa_cfg->fwcfg.num_ioim_reqs = num_ios;
566 if (num_tms > 0)
567 bfa_cfg->fwcfg.num_tskim_reqs = num_tms;
568 if (num_fcxps > 0 && num_fcxps <= BFA_FCXP_MAX)
569 bfa_cfg->fwcfg.num_fcxp_reqs = num_fcxps;
570 if (num_ufbufs > 0 && num_ufbufs <= BFA_UF_MAX)
571 bfa_cfg->fwcfg.num_uf_bufs = num_ufbufs;
572 if (reqq_size > 0)
573 bfa_cfg->drvcfg.num_reqq_elems = reqq_size;
574 if (rspq_size > 0)
575 bfa_cfg->drvcfg.num_rspq_elems = rspq_size;
576 if (num_sgpgs > 0 && num_sgpgs <= BFA_SGPG_MAX)
577 bfa_cfg->drvcfg.num_sgpgs = num_sgpgs;
578
579 /*
580 * populate the hal values back to the driver for sysfs use.
581 * otherwise, the default values will be shown as 0 in sysfs
582 */
583 num_rports = bfa_cfg->fwcfg.num_rports;
584 num_ios = bfa_cfg->fwcfg.num_ioim_reqs;
585 num_tms = bfa_cfg->fwcfg.num_tskim_reqs;
586 num_fcxps = bfa_cfg->fwcfg.num_fcxp_reqs;
587 num_ufbufs = bfa_cfg->fwcfg.num_uf_bufs;
588 reqq_size = bfa_cfg->drvcfg.num_reqq_elems;
589 rspq_size = bfa_cfg->drvcfg.num_rspq_elems;
590 num_sgpgs = bfa_cfg->drvcfg.num_sgpgs;
591 }
592
593 bfa_status_t
bfad_hal_mem_alloc(struct bfad_s * bfad)594 bfad_hal_mem_alloc(struct bfad_s *bfad)
595 {
596 struct bfa_meminfo_s *hal_meminfo = &bfad->meminfo;
597 struct bfa_mem_dma_s *dma_info, *dma_elem;
598 struct bfa_mem_kva_s *kva_info, *kva_elem;
599 struct list_head *dm_qe, *km_qe;
600 bfa_status_t rc = BFA_STATUS_OK;
601 dma_addr_t phys_addr;
602
603 bfa_cfg_get_default(&bfad->ioc_cfg);
604 bfad_update_hal_cfg(&bfad->ioc_cfg);
605 bfad->cfg_data.ioc_queue_depth = bfad->ioc_cfg.fwcfg.num_ioim_reqs;
606 bfa_cfg_get_meminfo(&bfad->ioc_cfg, hal_meminfo, &bfad->bfa);
607
608 dma_info = &hal_meminfo->dma_info;
609 kva_info = &hal_meminfo->kva_info;
610
611 /* Iterate through the KVA meminfo queue */
612 list_for_each(km_qe, &kva_info->qe) {
613 kva_elem = (struct bfa_mem_kva_s *) km_qe;
614 kva_elem->kva = vmalloc(kva_elem->mem_len);
615 if (kva_elem->kva == NULL) {
616 bfad_hal_mem_release(bfad);
617 rc = BFA_STATUS_ENOMEM;
618 goto ext;
619 }
620 memset(kva_elem->kva, 0, kva_elem->mem_len);
621 }
622
623 /* Iterate through the DMA meminfo queue */
624 list_for_each(dm_qe, &dma_info->qe) {
625 dma_elem = (struct bfa_mem_dma_s *) dm_qe;
626 dma_elem->kva = dma_alloc_coherent(&bfad->pcidev->dev,
627 dma_elem->mem_len,
628 &phys_addr, GFP_KERNEL);
629 if (dma_elem->kva == NULL) {
630 bfad_hal_mem_release(bfad);
631 rc = BFA_STATUS_ENOMEM;
632 goto ext;
633 }
634 dma_elem->dma = phys_addr;
635 memset(dma_elem->kva, 0, dma_elem->mem_len);
636 }
637 ext:
638 return rc;
639 }
640
641 /*
642 * Create a vport under a vf.
643 */
644 bfa_status_t
bfad_vport_create(struct bfad_s * bfad,u16 vf_id,struct bfa_lport_cfg_s * port_cfg,struct device * dev)645 bfad_vport_create(struct bfad_s *bfad, u16 vf_id,
646 struct bfa_lport_cfg_s *port_cfg, struct device *dev)
647 {
648 struct bfad_vport_s *vport;
649 int rc = BFA_STATUS_OK;
650 unsigned long flags;
651 struct completion fcomp;
652
653 vport = kzalloc(sizeof(struct bfad_vport_s), GFP_KERNEL);
654 if (!vport) {
655 rc = BFA_STATUS_ENOMEM;
656 goto ext;
657 }
658
659 vport->drv_port.bfad = bfad;
660 spin_lock_irqsave(&bfad->bfad_lock, flags);
661 rc = bfa_fcs_vport_create(&vport->fcs_vport, &bfad->bfa_fcs, vf_id,
662 port_cfg, vport);
663 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
664
665 if (rc != BFA_STATUS_OK)
666 goto ext_free_vport;
667
668 if (port_cfg->roles & BFA_LPORT_ROLE_FCP_IM) {
669 rc = bfad_im_scsi_host_alloc(bfad, vport->drv_port.im_port,
670 dev);
671 if (rc != BFA_STATUS_OK)
672 goto ext_free_fcs_vport;
673 }
674
675 spin_lock_irqsave(&bfad->bfad_lock, flags);
676 bfa_fcs_vport_start(&vport->fcs_vport);
677 list_add_tail(&vport->list_entry, &bfad->vport_list);
678 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
679
680 return BFA_STATUS_OK;
681
682 ext_free_fcs_vport:
683 spin_lock_irqsave(&bfad->bfad_lock, flags);
684 vport->comp_del = &fcomp;
685 init_completion(vport->comp_del);
686 bfa_fcs_vport_delete(&vport->fcs_vport);
687 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
688 wait_for_completion(vport->comp_del);
689 ext_free_vport:
690 kfree(vport);
691 ext:
692 return rc;
693 }
694
695 void
bfad_bfa_tmo(unsigned long data)696 bfad_bfa_tmo(unsigned long data)
697 {
698 struct bfad_s *bfad = (struct bfad_s *) data;
699 unsigned long flags;
700 struct list_head doneq;
701
702 spin_lock_irqsave(&bfad->bfad_lock, flags);
703
704 bfa_timer_beat(&bfad->bfa.timer_mod);
705
706 bfa_comp_deq(&bfad->bfa, &doneq);
707 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
708
709 if (!list_empty(&doneq)) {
710 bfa_comp_process(&bfad->bfa, &doneq);
711 spin_lock_irqsave(&bfad->bfad_lock, flags);
712 bfa_comp_free(&bfad->bfa, &doneq);
713 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
714 }
715
716 mod_timer(&bfad->hal_tmo,
717 jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
718 }
719
720 void
bfad_init_timer(struct bfad_s * bfad)721 bfad_init_timer(struct bfad_s *bfad)
722 {
723 init_timer(&bfad->hal_tmo);
724 bfad->hal_tmo.function = bfad_bfa_tmo;
725 bfad->hal_tmo.data = (unsigned long)bfad;
726
727 mod_timer(&bfad->hal_tmo,
728 jiffies + msecs_to_jiffies(BFA_TIMER_FREQ));
729 }
730
731 int
bfad_pci_init(struct pci_dev * pdev,struct bfad_s * bfad)732 bfad_pci_init(struct pci_dev *pdev, struct bfad_s *bfad)
733 {
734 int rc = -ENODEV;
735
736 if (pci_enable_device(pdev)) {
737 printk(KERN_ERR "pci_enable_device fail %p\n", pdev);
738 goto out;
739 }
740
741 if (pci_request_regions(pdev, BFAD_DRIVER_NAME))
742 goto out_disable_device;
743
744 pci_set_master(pdev);
745
746
747 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) ||
748 (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)) != 0)) {
749 if ((pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) ||
750 (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)) {
751 printk(KERN_ERR "pci_set_dma_mask fail %p\n", pdev);
752 goto out_release_region;
753 }
754 }
755
756 bfad->pci_bar0_kva = pci_iomap(pdev, 0, pci_resource_len(pdev, 0));
757 bfad->pci_bar2_kva = pci_iomap(pdev, 2, pci_resource_len(pdev, 2));
758
759 if (bfad->pci_bar0_kva == NULL) {
760 printk(KERN_ERR "Fail to map bar0\n");
761 goto out_release_region;
762 }
763
764 bfad->hal_pcidev.pci_slot = PCI_SLOT(pdev->devfn);
765 bfad->hal_pcidev.pci_func = PCI_FUNC(pdev->devfn);
766 bfad->hal_pcidev.pci_bar_kva = bfad->pci_bar0_kva;
767 bfad->hal_pcidev.device_id = pdev->device;
768 bfad->hal_pcidev.ssid = pdev->subsystem_device;
769 bfad->pci_name = pci_name(pdev);
770
771 bfad->pci_attr.vendor_id = pdev->vendor;
772 bfad->pci_attr.device_id = pdev->device;
773 bfad->pci_attr.ssid = pdev->subsystem_device;
774 bfad->pci_attr.ssvid = pdev->subsystem_vendor;
775 bfad->pci_attr.pcifn = PCI_FUNC(pdev->devfn);
776
777 bfad->pcidev = pdev;
778
779 /* Adjust PCIe Maximum Read Request Size */
780 if (pcie_max_read_reqsz > 0) {
781 int pcie_cap_reg;
782 u16 pcie_dev_ctl;
783 u16 mask = 0xffff;
784
785 switch (pcie_max_read_reqsz) {
786 case 128:
787 mask = 0x0;
788 break;
789 case 256:
790 mask = 0x1000;
791 break;
792 case 512:
793 mask = 0x2000;
794 break;
795 case 1024:
796 mask = 0x3000;
797 break;
798 case 2048:
799 mask = 0x4000;
800 break;
801 case 4096:
802 mask = 0x5000;
803 break;
804 default:
805 break;
806 }
807
808 pcie_cap_reg = pci_find_capability(pdev, PCI_CAP_ID_EXP);
809 if (mask != 0xffff && pcie_cap_reg) {
810 pcie_cap_reg += 0x08;
811 pci_read_config_word(pdev, pcie_cap_reg, &pcie_dev_ctl);
812 if ((pcie_dev_ctl & 0x7000) != mask) {
813 printk(KERN_WARNING "BFA[%s]: "
814 "pcie_max_read_request_size is %d, "
815 "reset to %d\n", bfad->pci_name,
816 (1 << ((pcie_dev_ctl & 0x7000) >> 12)) << 7,
817 pcie_max_read_reqsz);
818
819 pcie_dev_ctl &= ~0x7000;
820 pci_write_config_word(pdev, pcie_cap_reg,
821 pcie_dev_ctl | mask);
822 }
823 }
824 }
825
826 return 0;
827
828 out_release_region:
829 pci_release_regions(pdev);
830 out_disable_device:
831 pci_disable_device(pdev);
832 out:
833 return rc;
834 }
835
836 void
bfad_pci_uninit(struct pci_dev * pdev,struct bfad_s * bfad)837 bfad_pci_uninit(struct pci_dev *pdev, struct bfad_s *bfad)
838 {
839 pci_iounmap(pdev, bfad->pci_bar0_kva);
840 pci_iounmap(pdev, bfad->pci_bar2_kva);
841 pci_release_regions(pdev);
842 pci_disable_device(pdev);
843 pci_set_drvdata(pdev, NULL);
844 }
845
846 bfa_status_t
bfad_drv_init(struct bfad_s * bfad)847 bfad_drv_init(struct bfad_s *bfad)
848 {
849 bfa_status_t rc;
850 unsigned long flags;
851
852 bfad->cfg_data.rport_del_timeout = rport_del_timeout;
853 bfad->cfg_data.lun_queue_depth = bfa_lun_queue_depth;
854 bfad->cfg_data.io_max_sge = bfa_io_max_sge;
855 bfad->cfg_data.binding_method = FCP_PWWN_BINDING;
856
857 rc = bfad_hal_mem_alloc(bfad);
858 if (rc != BFA_STATUS_OK) {
859 printk(KERN_WARNING "bfad%d bfad_hal_mem_alloc failure\n",
860 bfad->inst_no);
861 printk(KERN_WARNING
862 "Not enough memory to attach all Brocade HBA ports, %s",
863 "System may need more memory.\n");
864 goto out_hal_mem_alloc_failure;
865 }
866
867 bfad->bfa.trcmod = bfad->trcmod;
868 bfad->bfa.plog = &bfad->plog_buf;
869 bfa_plog_init(&bfad->plog_buf);
870 bfa_plog_str(&bfad->plog_buf, BFA_PL_MID_DRVR, BFA_PL_EID_DRIVER_START,
871 0, "Driver Attach");
872
873 bfa_attach(&bfad->bfa, bfad, &bfad->ioc_cfg, &bfad->meminfo,
874 &bfad->hal_pcidev);
875
876 /* FCS INIT */
877 spin_lock_irqsave(&bfad->bfad_lock, flags);
878 bfad->bfa_fcs.trcmod = bfad->trcmod;
879 bfa_fcs_attach(&bfad->bfa_fcs, &bfad->bfa, bfad, BFA_FALSE);
880 bfad->bfa_fcs.fdmi_enabled = fdmi_enable;
881 bfa_fcs_init(&bfad->bfa_fcs);
882 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
883
884 bfad->bfad_flags |= BFAD_DRV_INIT_DONE;
885
886 /* configure base port */
887 rc = bfad_cfg_pport(bfad, BFA_LPORT_ROLE_FCP_IM);
888 if (rc != BFA_STATUS_OK)
889 goto out_cfg_pport_fail;
890
891 return BFA_STATUS_OK;
892
893 out_cfg_pport_fail:
894 /* fcs exit - on cfg pport failure */
895 spin_lock_irqsave(&bfad->bfad_lock, flags);
896 init_completion(&bfad->comp);
897 bfad->pport.flags |= BFAD_PORT_DELETE;
898 bfa_fcs_exit(&bfad->bfa_fcs);
899 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
900 wait_for_completion(&bfad->comp);
901 /* bfa detach - free hal memory */
902 bfa_detach(&bfad->bfa);
903 bfad_hal_mem_release(bfad);
904 out_hal_mem_alloc_failure:
905 return BFA_STATUS_FAILED;
906 }
907
908 void
bfad_drv_uninit(struct bfad_s * bfad)909 bfad_drv_uninit(struct bfad_s *bfad)
910 {
911 unsigned long flags;
912
913 spin_lock_irqsave(&bfad->bfad_lock, flags);
914 init_completion(&bfad->comp);
915 bfa_iocfc_stop(&bfad->bfa);
916 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
917 wait_for_completion(&bfad->comp);
918
919 del_timer_sync(&bfad->hal_tmo);
920 bfa_isr_disable(&bfad->bfa);
921 bfa_detach(&bfad->bfa);
922 bfad_remove_intr(bfad);
923 bfad_hal_mem_release(bfad);
924
925 bfad->bfad_flags &= ~BFAD_DRV_INIT_DONE;
926 }
927
928 void
bfad_drv_start(struct bfad_s * bfad)929 bfad_drv_start(struct bfad_s *bfad)
930 {
931 unsigned long flags;
932
933 spin_lock_irqsave(&bfad->bfad_lock, flags);
934 bfa_iocfc_start(&bfad->bfa);
935 bfa_fcs_pbc_vport_init(&bfad->bfa_fcs);
936 bfa_fcs_fabric_modstart(&bfad->bfa_fcs);
937 bfad->bfad_flags |= BFAD_HAL_START_DONE;
938 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
939
940 if (bfad->im)
941 flush_workqueue(bfad->im->drv_workq);
942 }
943
944 void
bfad_fcs_stop(struct bfad_s * bfad)945 bfad_fcs_stop(struct bfad_s *bfad)
946 {
947 unsigned long flags;
948
949 spin_lock_irqsave(&bfad->bfad_lock, flags);
950 init_completion(&bfad->comp);
951 bfad->pport.flags |= BFAD_PORT_DELETE;
952 bfa_fcs_exit(&bfad->bfa_fcs);
953 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
954 wait_for_completion(&bfad->comp);
955
956 bfa_sm_send_event(bfad, BFAD_E_FCS_EXIT_COMP);
957 }
958
959 void
bfad_stop(struct bfad_s * bfad)960 bfad_stop(struct bfad_s *bfad)
961 {
962 unsigned long flags;
963
964 spin_lock_irqsave(&bfad->bfad_lock, flags);
965 init_completion(&bfad->comp);
966 bfa_iocfc_stop(&bfad->bfa);
967 bfad->bfad_flags &= ~BFAD_HAL_START_DONE;
968 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
969 wait_for_completion(&bfad->comp);
970
971 bfa_sm_send_event(bfad, BFAD_E_EXIT_COMP);
972 }
973
974 bfa_status_t
bfad_cfg_pport(struct bfad_s * bfad,enum bfa_lport_role role)975 bfad_cfg_pport(struct bfad_s *bfad, enum bfa_lport_role role)
976 {
977 int rc = BFA_STATUS_OK;
978
979 /* Allocate scsi_host for the physical port */
980 if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
981 (role & BFA_LPORT_ROLE_FCP_IM)) {
982 if (bfad->pport.im_port == NULL) {
983 rc = BFA_STATUS_FAILED;
984 goto out;
985 }
986
987 rc = bfad_im_scsi_host_alloc(bfad, bfad->pport.im_port,
988 &bfad->pcidev->dev);
989 if (rc != BFA_STATUS_OK)
990 goto out;
991
992 bfad->pport.roles |= BFA_LPORT_ROLE_FCP_IM;
993 }
994
995 bfad->bfad_flags |= BFAD_CFG_PPORT_DONE;
996
997 out:
998 return rc;
999 }
1000
1001 void
bfad_uncfg_pport(struct bfad_s * bfad)1002 bfad_uncfg_pport(struct bfad_s *bfad)
1003 {
1004 if ((supported_fc4s & BFA_LPORT_ROLE_FCP_IM) &&
1005 (bfad->pport.roles & BFA_LPORT_ROLE_FCP_IM)) {
1006 bfad_im_scsi_host_free(bfad, bfad->pport.im_port);
1007 bfad_im_port_clean(bfad->pport.im_port);
1008 kfree(bfad->pport.im_port);
1009 bfad->pport.roles &= ~BFA_LPORT_ROLE_FCP_IM;
1010 }
1011
1012 bfad->bfad_flags &= ~BFAD_CFG_PPORT_DONE;
1013 }
1014
1015 bfa_status_t
bfad_start_ops(struct bfad_s * bfad)1016 bfad_start_ops(struct bfad_s *bfad) {
1017
1018 int retval;
1019 unsigned long flags;
1020 struct bfad_vport_s *vport, *vport_new;
1021 struct bfa_fcs_driver_info_s driver_info;
1022
1023 /* Limit min/max. xfer size to [64k-32MB] */
1024 if (max_xfer_size < BFAD_MIN_SECTORS >> 1)
1025 max_xfer_size = BFAD_MIN_SECTORS >> 1;
1026 if (max_xfer_size > BFAD_MAX_SECTORS >> 1)
1027 max_xfer_size = BFAD_MAX_SECTORS >> 1;
1028
1029 /* Fill the driver_info info to fcs*/
1030 memset(&driver_info, 0, sizeof(driver_info));
1031 strncpy(driver_info.version, BFAD_DRIVER_VERSION,
1032 sizeof(driver_info.version) - 1);
1033 if (host_name)
1034 strncpy(driver_info.host_machine_name, host_name,
1035 sizeof(driver_info.host_machine_name) - 1);
1036 if (os_name)
1037 strncpy(driver_info.host_os_name, os_name,
1038 sizeof(driver_info.host_os_name) - 1);
1039 if (os_patch)
1040 strncpy(driver_info.host_os_patch, os_patch,
1041 sizeof(driver_info.host_os_patch) - 1);
1042
1043 strncpy(driver_info.os_device_name, bfad->pci_name,
1044 sizeof(driver_info.os_device_name - 1));
1045
1046 /* FCS driver info init */
1047 spin_lock_irqsave(&bfad->bfad_lock, flags);
1048 bfa_fcs_driver_info_init(&bfad->bfa_fcs, &driver_info);
1049 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1050
1051 /*
1052 * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
1053 * with values learned during bfa_init firmware GETATTR REQ.
1054 */
1055 bfa_fcs_update_cfg(&bfad->bfa_fcs);
1056
1057 /* Setup fc host fixed attribute if the lk supports */
1058 bfad_fc_host_init(bfad->pport.im_port);
1059
1060 /* BFAD level FC4 IM specific resource allocation */
1061 retval = bfad_im_probe(bfad);
1062 if (retval != BFA_STATUS_OK) {
1063 printk(KERN_WARNING "bfad_im_probe failed\n");
1064 if (bfa_sm_cmp_state(bfad, bfad_sm_initializing))
1065 bfa_sm_set_state(bfad, bfad_sm_failed);
1066 bfad_im_probe_undo(bfad);
1067 bfad->bfad_flags &= ~BFAD_FC4_PROBE_DONE;
1068 bfad_uncfg_pport(bfad);
1069 bfad_stop(bfad);
1070 return BFA_STATUS_FAILED;
1071 } else
1072 bfad->bfad_flags |= BFAD_FC4_PROBE_DONE;
1073
1074 bfad_drv_start(bfad);
1075
1076 /* Complete pbc vport create */
1077 list_for_each_entry_safe(vport, vport_new, &bfad->pbc_vport_list,
1078 list_entry) {
1079 struct fc_vport_identifiers vid;
1080 struct fc_vport *fc_vport;
1081 char pwwn_buf[BFA_STRING_32];
1082
1083 memset(&vid, 0, sizeof(vid));
1084 vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
1085 vid.vport_type = FC_PORTTYPE_NPIV;
1086 vid.disable = false;
1087 vid.node_name = wwn_to_u64((u8 *)
1088 (&((vport->fcs_vport).lport.port_cfg.nwwn)));
1089 vid.port_name = wwn_to_u64((u8 *)
1090 (&((vport->fcs_vport).lport.port_cfg.pwwn)));
1091 fc_vport = fc_vport_create(bfad->pport.im_port->shost, 0, &vid);
1092 if (!fc_vport) {
1093 wwn2str(pwwn_buf, vid.port_name);
1094 printk(KERN_WARNING "bfad%d: failed to create pbc vport"
1095 " %s\n", bfad->inst_no, pwwn_buf);
1096 }
1097 list_del(&vport->list_entry);
1098 kfree(vport);
1099 }
1100
1101 /*
1102 * If bfa_linkup_delay is set to -1 default; try to retrive the
1103 * value using the bfad_get_linkup_delay(); else use the
1104 * passed in module param value as the bfa_linkup_delay.
1105 */
1106 if (bfa_linkup_delay < 0) {
1107 bfa_linkup_delay = bfad_get_linkup_delay(bfad);
1108 bfad_rport_online_wait(bfad);
1109 bfa_linkup_delay = -1;
1110 } else
1111 bfad_rport_online_wait(bfad);
1112
1113 BFA_LOG(KERN_INFO, bfad, bfa_log_level, "bfa device claimed\n");
1114
1115 return BFA_STATUS_OK;
1116 }
1117
1118 int
bfad_worker(void * ptr)1119 bfad_worker(void *ptr)
1120 {
1121 struct bfad_s *bfad;
1122 unsigned long flags;
1123
1124 bfad = (struct bfad_s *)ptr;
1125
1126 while (!kthread_should_stop()) {
1127
1128 /* Send event BFAD_E_INIT_SUCCESS */
1129 bfa_sm_send_event(bfad, BFAD_E_INIT_SUCCESS);
1130
1131 spin_lock_irqsave(&bfad->bfad_lock, flags);
1132 bfad->bfad_tsk = NULL;
1133 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1134
1135 break;
1136 }
1137
1138 return 0;
1139 }
1140
1141 /*
1142 * BFA driver interrupt functions
1143 */
1144 irqreturn_t
bfad_intx(int irq,void * dev_id)1145 bfad_intx(int irq, void *dev_id)
1146 {
1147 struct bfad_s *bfad = dev_id;
1148 struct list_head doneq;
1149 unsigned long flags;
1150 bfa_boolean_t rc;
1151
1152 spin_lock_irqsave(&bfad->bfad_lock, flags);
1153 rc = bfa_intx(&bfad->bfa);
1154 if (!rc) {
1155 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1156 return IRQ_NONE;
1157 }
1158
1159 bfa_comp_deq(&bfad->bfa, &doneq);
1160 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1161
1162 if (!list_empty(&doneq)) {
1163 bfa_comp_process(&bfad->bfa, &doneq);
1164
1165 spin_lock_irqsave(&bfad->bfad_lock, flags);
1166 bfa_comp_free(&bfad->bfa, &doneq);
1167 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1168 }
1169
1170 return IRQ_HANDLED;
1171
1172 }
1173
1174 static irqreturn_t
bfad_msix(int irq,void * dev_id)1175 bfad_msix(int irq, void *dev_id)
1176 {
1177 struct bfad_msix_s *vec = dev_id;
1178 struct bfad_s *bfad = vec->bfad;
1179 struct list_head doneq;
1180 unsigned long flags;
1181
1182 spin_lock_irqsave(&bfad->bfad_lock, flags);
1183
1184 bfa_msix(&bfad->bfa, vec->msix.entry);
1185 bfa_comp_deq(&bfad->bfa, &doneq);
1186 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1187
1188 if (!list_empty(&doneq)) {
1189 bfa_comp_process(&bfad->bfa, &doneq);
1190
1191 spin_lock_irqsave(&bfad->bfad_lock, flags);
1192 bfa_comp_free(&bfad->bfa, &doneq);
1193 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1194 }
1195
1196 return IRQ_HANDLED;
1197 }
1198
1199 /*
1200 * Initialize the MSIX entry table.
1201 */
1202 static void
bfad_init_msix_entry(struct bfad_s * bfad,struct msix_entry * msix_entries,int mask,int max_bit)1203 bfad_init_msix_entry(struct bfad_s *bfad, struct msix_entry *msix_entries,
1204 int mask, int max_bit)
1205 {
1206 int i;
1207 int match = 0x00000001;
1208
1209 for (i = 0, bfad->nvec = 0; i < MAX_MSIX_ENTRY; i++) {
1210 if (mask & match) {
1211 bfad->msix_tab[bfad->nvec].msix.entry = i;
1212 bfad->msix_tab[bfad->nvec].bfad = bfad;
1213 msix_entries[bfad->nvec].entry = i;
1214 bfad->nvec++;
1215 }
1216
1217 match <<= 1;
1218 }
1219
1220 }
1221
1222 int
bfad_install_msix_handler(struct bfad_s * bfad)1223 bfad_install_msix_handler(struct bfad_s *bfad)
1224 {
1225 int i, error = 0;
1226
1227 for (i = 0; i < bfad->nvec; i++) {
1228 sprintf(bfad->msix_tab[i].name, "bfa-%s-%s",
1229 bfad->pci_name,
1230 ((bfa_asic_id_cb(bfad->hal_pcidev.device_id)) ?
1231 msix_name_cb[i] : msix_name_ct[i]));
1232
1233 error = request_irq(bfad->msix_tab[i].msix.vector,
1234 (irq_handler_t) bfad_msix, 0,
1235 bfad->msix_tab[i].name, &bfad->msix_tab[i]);
1236 bfa_trc(bfad, i);
1237 bfa_trc(bfad, bfad->msix_tab[i].msix.vector);
1238 if (error) {
1239 int j;
1240
1241 for (j = 0; j < i; j++)
1242 free_irq(bfad->msix_tab[j].msix.vector,
1243 &bfad->msix_tab[j]);
1244
1245 bfad->bfad_flags &= ~BFAD_MSIX_ON;
1246 pci_disable_msix(bfad->pcidev);
1247
1248 return 1;
1249 }
1250 }
1251
1252 return 0;
1253 }
1254
1255 /*
1256 * Setup MSIX based interrupt.
1257 */
1258 int
bfad_setup_intr(struct bfad_s * bfad)1259 bfad_setup_intr(struct bfad_s *bfad)
1260 {
1261 int error = 0;
1262 u32 mask = 0, i, num_bit = 0, max_bit = 0;
1263 struct msix_entry msix_entries[MAX_MSIX_ENTRY];
1264 struct pci_dev *pdev = bfad->pcidev;
1265 u16 reg;
1266
1267 /* Call BFA to get the msix map for this PCI function. */
1268 bfa_msix_getvecs(&bfad->bfa, &mask, &num_bit, &max_bit);
1269
1270 /* Set up the msix entry table */
1271 bfad_init_msix_entry(bfad, msix_entries, mask, max_bit);
1272
1273 if ((bfa_asic_id_ctc(pdev->device) && !msix_disable_ct) ||
1274 (bfa_asic_id_cb(pdev->device) && !msix_disable_cb)) {
1275
1276 error = pci_enable_msix(bfad->pcidev, msix_entries, bfad->nvec);
1277 if (error) {
1278 /*
1279 * Only error number of vector is available.
1280 * We don't have a mechanism to map multiple
1281 * interrupts into one vector, so even if we
1282 * can try to request less vectors, we don't
1283 * know how to associate interrupt events to
1284 * vectors. Linux doesn't duplicate vectors
1285 * in the MSIX table for this case.
1286 */
1287
1288 printk(KERN_WARNING "bfad%d: "
1289 "pci_enable_msix failed (%d),"
1290 " use line based.\n", bfad->inst_no, error);
1291
1292 goto line_based;
1293 }
1294
1295 /* Disable INTX in MSI-X mode */
1296 pci_read_config_word(pdev, PCI_COMMAND, ®);
1297
1298 if (!(reg & PCI_COMMAND_INTX_DISABLE))
1299 pci_write_config_word(pdev, PCI_COMMAND,
1300 reg | PCI_COMMAND_INTX_DISABLE);
1301
1302 /* Save the vectors */
1303 for (i = 0; i < bfad->nvec; i++) {
1304 bfa_trc(bfad, msix_entries[i].vector);
1305 bfad->msix_tab[i].msix.vector = msix_entries[i].vector;
1306 }
1307
1308 bfa_msix_init(&bfad->bfa, bfad->nvec);
1309
1310 bfad->bfad_flags |= BFAD_MSIX_ON;
1311
1312 return error;
1313 }
1314
1315 line_based:
1316 error = 0;
1317 if (request_irq
1318 (bfad->pcidev->irq, (irq_handler_t) bfad_intx, BFAD_IRQ_FLAGS,
1319 BFAD_DRIVER_NAME, bfad) != 0) {
1320 /* Enable interrupt handler failed */
1321 return 1;
1322 }
1323 bfad->bfad_flags |= BFAD_INTX_ON;
1324
1325 return error;
1326 }
1327
1328 void
bfad_remove_intr(struct bfad_s * bfad)1329 bfad_remove_intr(struct bfad_s *bfad)
1330 {
1331 int i;
1332
1333 if (bfad->bfad_flags & BFAD_MSIX_ON) {
1334 for (i = 0; i < bfad->nvec; i++)
1335 free_irq(bfad->msix_tab[i].msix.vector,
1336 &bfad->msix_tab[i]);
1337
1338 pci_disable_msix(bfad->pcidev);
1339 bfad->bfad_flags &= ~BFAD_MSIX_ON;
1340 } else if (bfad->bfad_flags & BFAD_INTX_ON) {
1341 free_irq(bfad->pcidev->irq, bfad);
1342 }
1343 }
1344
1345 /*
1346 * PCI probe entry.
1347 */
1348 int
bfad_pci_probe(struct pci_dev * pdev,const struct pci_device_id * pid)1349 bfad_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid)
1350 {
1351 struct bfad_s *bfad;
1352 int error = -ENODEV, retval, i;
1353
1354 /* For single port cards - only claim function 0 */
1355 if ((pdev->device == BFA_PCI_DEVICE_ID_FC_8G1P) &&
1356 (PCI_FUNC(pdev->devfn) != 0))
1357 return -ENODEV;
1358
1359 bfad = kzalloc(sizeof(struct bfad_s), GFP_KERNEL);
1360 if (!bfad) {
1361 error = -ENOMEM;
1362 goto out;
1363 }
1364
1365 bfad->trcmod = kzalloc(sizeof(struct bfa_trc_mod_s), GFP_KERNEL);
1366 if (!bfad->trcmod) {
1367 printk(KERN_WARNING "Error alloc trace buffer!\n");
1368 error = -ENOMEM;
1369 goto out_alloc_trace_failure;
1370 }
1371
1372 /* TRACE INIT */
1373 bfa_trc_init(bfad->trcmod);
1374 bfa_trc(bfad, bfad_inst);
1375
1376 /* AEN INIT */
1377 INIT_LIST_HEAD(&bfad->free_aen_q);
1378 INIT_LIST_HEAD(&bfad->active_aen_q);
1379 for (i = 0; i < BFA_AEN_MAX_ENTRY; i++)
1380 list_add_tail(&bfad->aen_list[i].qe, &bfad->free_aen_q);
1381
1382 if (!(bfad_load_fwimg(pdev))) {
1383 kfree(bfad->trcmod);
1384 goto out_alloc_trace_failure;
1385 }
1386
1387 retval = bfad_pci_init(pdev, bfad);
1388 if (retval) {
1389 printk(KERN_WARNING "bfad_pci_init failure!\n");
1390 error = retval;
1391 goto out_pci_init_failure;
1392 }
1393
1394 mutex_lock(&bfad_mutex);
1395 bfad->inst_no = bfad_inst++;
1396 list_add_tail(&bfad->list_entry, &bfad_list);
1397 mutex_unlock(&bfad_mutex);
1398
1399 /* Initializing the state machine: State set to uninit */
1400 bfa_sm_set_state(bfad, bfad_sm_uninit);
1401
1402 spin_lock_init(&bfad->bfad_lock);
1403 pci_set_drvdata(pdev, bfad);
1404
1405 bfad->ref_count = 0;
1406 bfad->pport.bfad = bfad;
1407 INIT_LIST_HEAD(&bfad->pbc_vport_list);
1408 INIT_LIST_HEAD(&bfad->vport_list);
1409
1410 /* Setup the debugfs node for this bfad */
1411 if (bfa_debugfs_enable)
1412 bfad_debugfs_init(&bfad->pport);
1413
1414 retval = bfad_drv_init(bfad);
1415 if (retval != BFA_STATUS_OK)
1416 goto out_drv_init_failure;
1417
1418 bfa_sm_send_event(bfad, BFAD_E_CREATE);
1419
1420 if (bfa_sm_cmp_state(bfad, bfad_sm_uninit))
1421 goto out_bfad_sm_failure;
1422
1423 return 0;
1424
1425 out_bfad_sm_failure:
1426 bfa_detach(&bfad->bfa);
1427 bfad_hal_mem_release(bfad);
1428 out_drv_init_failure:
1429 /* Remove the debugfs node for this bfad */
1430 kfree(bfad->regdata);
1431 bfad_debugfs_exit(&bfad->pport);
1432 mutex_lock(&bfad_mutex);
1433 bfad_inst--;
1434 list_del(&bfad->list_entry);
1435 mutex_unlock(&bfad_mutex);
1436 bfad_pci_uninit(pdev, bfad);
1437 out_pci_init_failure:
1438 kfree(bfad->trcmod);
1439 out_alloc_trace_failure:
1440 kfree(bfad);
1441 out:
1442 return error;
1443 }
1444
1445 /*
1446 * PCI remove entry.
1447 */
1448 void
bfad_pci_remove(struct pci_dev * pdev)1449 bfad_pci_remove(struct pci_dev *pdev)
1450 {
1451 struct bfad_s *bfad = pci_get_drvdata(pdev);
1452 unsigned long flags;
1453
1454 bfa_trc(bfad, bfad->inst_no);
1455
1456 spin_lock_irqsave(&bfad->bfad_lock, flags);
1457 if (bfad->bfad_tsk != NULL) {
1458 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1459 kthread_stop(bfad->bfad_tsk);
1460 } else {
1461 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1462 }
1463
1464 /* Send Event BFAD_E_STOP */
1465 bfa_sm_send_event(bfad, BFAD_E_STOP);
1466
1467 /* Driver detach and dealloc mem */
1468 spin_lock_irqsave(&bfad->bfad_lock, flags);
1469 bfa_detach(&bfad->bfa);
1470 spin_unlock_irqrestore(&bfad->bfad_lock, flags);
1471 bfad_hal_mem_release(bfad);
1472
1473 /* Remove the debugfs node for this bfad */
1474 kfree(bfad->regdata);
1475 bfad_debugfs_exit(&bfad->pport);
1476
1477 /* Cleaning the BFAD instance */
1478 mutex_lock(&bfad_mutex);
1479 bfad_inst--;
1480 list_del(&bfad->list_entry);
1481 mutex_unlock(&bfad_mutex);
1482 bfad_pci_uninit(pdev, bfad);
1483
1484 kfree(bfad->trcmod);
1485 kfree(bfad);
1486 }
1487
1488 struct pci_device_id bfad_id_table[] = {
1489 {
1490 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1491 .device = BFA_PCI_DEVICE_ID_FC_8G2P,
1492 .subvendor = PCI_ANY_ID,
1493 .subdevice = PCI_ANY_ID,
1494 },
1495 {
1496 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1497 .device = BFA_PCI_DEVICE_ID_FC_8G1P,
1498 .subvendor = PCI_ANY_ID,
1499 .subdevice = PCI_ANY_ID,
1500 },
1501 {
1502 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1503 .device = BFA_PCI_DEVICE_ID_CT,
1504 .subvendor = PCI_ANY_ID,
1505 .subdevice = PCI_ANY_ID,
1506 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1507 .class_mask = ~0,
1508 },
1509 {
1510 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1511 .device = BFA_PCI_DEVICE_ID_CT_FC,
1512 .subvendor = PCI_ANY_ID,
1513 .subdevice = PCI_ANY_ID,
1514 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1515 .class_mask = ~0,
1516 },
1517 {
1518 .vendor = BFA_PCI_VENDOR_ID_BROCADE,
1519 .device = BFA_PCI_DEVICE_ID_CT2,
1520 .subvendor = PCI_ANY_ID,
1521 .subdevice = PCI_ANY_ID,
1522 .class = (PCI_CLASS_SERIAL_FIBER << 8),
1523 .class_mask = ~0,
1524 },
1525
1526 {0, 0},
1527 };
1528
1529 MODULE_DEVICE_TABLE(pci, bfad_id_table);
1530
1531 static struct pci_driver bfad_pci_driver = {
1532 .name = BFAD_DRIVER_NAME,
1533 .id_table = bfad_id_table,
1534 .probe = bfad_pci_probe,
1535 .remove = __devexit_p(bfad_pci_remove),
1536 };
1537
1538 /*
1539 * Driver module init.
1540 */
1541 static int __init
bfad_init(void)1542 bfad_init(void)
1543 {
1544 int error = 0;
1545
1546 printk(KERN_INFO "Brocade BFA FC/FCOE SCSI driver - version: %s\n",
1547 BFAD_DRIVER_VERSION);
1548
1549 if (num_sgpgs > 0)
1550 num_sgpgs_parm = num_sgpgs;
1551
1552 error = bfad_im_module_init();
1553 if (error) {
1554 error = -ENOMEM;
1555 printk(KERN_WARNING "bfad_im_module_init failure\n");
1556 goto ext;
1557 }
1558
1559 if (strcmp(FCPI_NAME, " fcpim") == 0)
1560 supported_fc4s |= BFA_LPORT_ROLE_FCP_IM;
1561
1562 bfa_auto_recover = ioc_auto_recover;
1563 bfa_fcs_rport_set_del_timeout(rport_del_timeout);
1564
1565 error = pci_register_driver(&bfad_pci_driver);
1566 if (error) {
1567 printk(KERN_WARNING "pci_register_driver failure\n");
1568 goto ext;
1569 }
1570
1571 return 0;
1572
1573 ext:
1574 bfad_im_module_exit();
1575 return error;
1576 }
1577
1578 /*
1579 * Driver module exit.
1580 */
1581 static void __exit
bfad_exit(void)1582 bfad_exit(void)
1583 {
1584 pci_unregister_driver(&bfad_pci_driver);
1585 bfad_im_module_exit();
1586 bfad_free_fwimg();
1587 }
1588
1589 /* Firmware handling */
1590 static void
bfad_read_firmware(struct pci_dev * pdev,u32 ** bfi_image,u32 * bfi_image_size,char * fw_name)1591 bfad_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
1592 u32 *bfi_image_size, char *fw_name)
1593 {
1594 const struct firmware *fw;
1595
1596 if (request_firmware(&fw, fw_name, &pdev->dev)) {
1597 printk(KERN_ALERT "Can't locate firmware %s\n", fw_name);
1598 *bfi_image = NULL;
1599 goto out;
1600 }
1601
1602 *bfi_image = vmalloc(fw->size);
1603 if (NULL == *bfi_image) {
1604 printk(KERN_ALERT "Fail to allocate buffer for fw image "
1605 "size=%x!\n", (u32) fw->size);
1606 goto out;
1607 }
1608
1609 memcpy(*bfi_image, fw->data, fw->size);
1610 *bfi_image_size = fw->size/sizeof(u32);
1611 out:
1612 release_firmware(fw);
1613 }
1614
1615 static u32 *
bfad_load_fwimg(struct pci_dev * pdev)1616 bfad_load_fwimg(struct pci_dev *pdev)
1617 {
1618 if (bfa_asic_id_ct2(pdev->device)) {
1619 if (bfi_image_ct2_size == 0)
1620 bfad_read_firmware(pdev, &bfi_image_ct2,
1621 &bfi_image_ct2_size, BFAD_FW_FILE_CT2);
1622 return bfi_image_ct2;
1623 } else if (bfa_asic_id_ct(pdev->device)) {
1624 if (bfi_image_ct_size == 0)
1625 bfad_read_firmware(pdev, &bfi_image_ct,
1626 &bfi_image_ct_size, BFAD_FW_FILE_CT);
1627 return bfi_image_ct;
1628 } else if (bfa_asic_id_cb(pdev->device)) {
1629 if (bfi_image_cb_size == 0)
1630 bfad_read_firmware(pdev, &bfi_image_cb,
1631 &bfi_image_cb_size, BFAD_FW_FILE_CB);
1632 return bfi_image_cb;
1633 }
1634
1635 return NULL;
1636 }
1637
1638 static void
bfad_free_fwimg(void)1639 bfad_free_fwimg(void)
1640 {
1641 if (bfi_image_ct2_size && bfi_image_ct2)
1642 vfree(bfi_image_ct2);
1643 if (bfi_image_ct_size && bfi_image_ct)
1644 vfree(bfi_image_ct);
1645 if (bfi_image_cb_size && bfi_image_cb)
1646 vfree(bfi_image_cb);
1647 }
1648
1649 module_init(bfad_init);
1650 module_exit(bfad_exit);
1651 MODULE_LICENSE("GPL");
1652 MODULE_DESCRIPTION("Brocade Fibre Channel HBA Driver" BFAD_PROTO_NAME);
1653 MODULE_AUTHOR("Brocade Communications Systems, Inc.");
1654 MODULE_VERSION(BFAD_DRIVER_VERSION);
1655