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, &reg);
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