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[SCSI] qla2xxx: Add ISP24xx initialization routines.
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / qla2xxx / qla_os.c
1 /*
2 * QLOGIC LINUX SOFTWARE
3 *
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2004 QLogic Corporation
6 * (www.qlogic.com)
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 as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
11 * later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 */
19 #include "qla_def.h"
20
21 #include <linux/moduleparam.h>
22 #include <linux/vmalloc.h>
23 #include <linux/smp_lock.h>
24 #include <linux/delay.h>
25
26 #include <scsi/scsi_tcq.h>
27 #include <scsi/scsicam.h>
28 #include <scsi/scsi_transport.h>
29 #include <scsi/scsi_transport_fc.h>
30
31 /*
32 * Driver version
33 */
34 char qla2x00_version_str[40];
35
36 /*
37 * SRB allocation cache
38 */
39 static kmem_cache_t *srb_cachep;
40
41 /*
42 * Ioctl related information.
43 */
44 static int num_hosts;
45
46 int ql2xlogintimeout = 20;
47 module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
48 MODULE_PARM_DESC(ql2xlogintimeout,
49 "Login timeout value in seconds.");
50
51 int qlport_down_retry = 30;
52 module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
53 MODULE_PARM_DESC(qlport_down_retry,
54 "Maximum number of command retries to a port that returns"
55 "a PORT-DOWN status.");
56
57 int ql2xplogiabsentdevice;
58 module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
59 MODULE_PARM_DESC(ql2xplogiabsentdevice,
60 "Option to enable PLOGI to devices that are not present after "
61 "a Fabric scan. This is needed for several broken switches."
62 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
63
64 int ql2xenablezio = 0;
65 module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
66 MODULE_PARM_DESC(ql2xenablezio,
67 "Option to enable ZIO:If 1 then enable it otherwise"
68 " use the default set in the NVRAM."
69 " Default is 0 : disabled");
70
71 int ql2xintrdelaytimer = 10;
72 module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
73 MODULE_PARM_DESC(ql2xintrdelaytimer,
74 "ZIO: Waiting time for Firmware before it generates an "
75 "interrupt to the host to notify completion of request.");
76
77 int ql2xloginretrycount = 0;
78 module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
79 MODULE_PARM_DESC(ql2xloginretrycount,
80 "Specify an alternate value for the NVRAM login retry count.");
81
82 static void qla2x00_free_device(scsi_qla_host_t *);
83
84 static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
85
86 /*
87 * SCSI host template entry points
88 */
89 static int qla2xxx_slave_configure(struct scsi_device * device);
90 static int qla2xxx_slave_alloc(struct scsi_device *);
91 static void qla2xxx_slave_destroy(struct scsi_device *);
92 static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
93 void (*fn)(struct scsi_cmnd *));
94 static int qla2xxx_eh_abort(struct scsi_cmnd *);
95 static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
96 static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
97 static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
98 static int qla2x00_loop_reset(scsi_qla_host_t *ha);
99 static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
100
101 static struct scsi_host_template qla2x00_driver_template = {
102 .module = THIS_MODULE,
103 .name = "qla2xxx",
104 .queuecommand = qla2x00_queuecommand,
105
106 .eh_abort_handler = qla2xxx_eh_abort,
107 .eh_device_reset_handler = qla2xxx_eh_device_reset,
108 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
109 .eh_host_reset_handler = qla2xxx_eh_host_reset,
110
111 .slave_configure = qla2xxx_slave_configure,
112
113 .slave_alloc = qla2xxx_slave_alloc,
114 .slave_destroy = qla2xxx_slave_destroy,
115 .this_id = -1,
116 .cmd_per_lun = 3,
117 .use_clustering = ENABLE_CLUSTERING,
118 .sg_tablesize = SG_ALL,
119
120 /*
121 * The RISC allows for each command to transfer (2^32-1) bytes of data,
122 * which equates to 0x800000 sectors.
123 */
124 .max_sectors = 0xFFFF,
125 };
126
127 static struct scsi_transport_template *qla2xxx_transport_template = NULL;
128
129 /* TODO Convert to inlines
130 *
131 * Timer routines
132 */
133 #define WATCH_INTERVAL 1 /* number of seconds */
134
135 static void qla2x00_timer(scsi_qla_host_t *);
136
137 static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
138 void *, unsigned long);
139 static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
140 static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
141
142 static inline void
143 qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
144 {
145 init_timer(&ha->timer);
146 ha->timer.expires = jiffies + interval * HZ;
147 ha->timer.data = (unsigned long)ha;
148 ha->timer.function = (void (*)(unsigned long))func;
149 add_timer(&ha->timer);
150 ha->timer_active = 1;
151 }
152
153 static inline void
154 qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
155 {
156 mod_timer(&ha->timer, jiffies + interval * HZ);
157 }
158
159 static __inline__ void
160 qla2x00_stop_timer(scsi_qla_host_t *ha)
161 {
162 del_timer_sync(&ha->timer);
163 ha->timer_active = 0;
164 }
165
166 static int qla2x00_do_dpc(void *data);
167
168 static void qla2x00_rst_aen(scsi_qla_host_t *);
169
170 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
171 static void qla2x00_mem_free(scsi_qla_host_t *ha);
172 static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
173 static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
174 static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *);
175 static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
176 void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
177
178 /* -------------------------------------------------------------------------- */
179
180 static char *
181 qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
182 {
183 static char *pci_bus_modes[] = {
184 "33", "66", "100", "133",
185 };
186 uint16_t pci_bus;
187
188 strcpy(str, "PCI");
189 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
190 if (pci_bus) {
191 strcat(str, "-X (");
192 strcat(str, pci_bus_modes[pci_bus]);
193 } else {
194 pci_bus = (ha->pci_attr & BIT_8) >> 8;
195 strcat(str, " (");
196 strcat(str, pci_bus_modes[pci_bus]);
197 }
198 strcat(str, " MHz)");
199
200 return (str);
201 }
202
203 char *
204 qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
205 {
206 char un_str[10];
207
208 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
209 ha->fw_minor_version,
210 ha->fw_subminor_version);
211
212 if (ha->fw_attributes & BIT_9) {
213 strcat(str, "FLX");
214 return (str);
215 }
216
217 switch (ha->fw_attributes & 0xFF) {
218 case 0x7:
219 strcat(str, "EF");
220 break;
221 case 0x17:
222 strcat(str, "TP");
223 break;
224 case 0x37:
225 strcat(str, "IP");
226 break;
227 case 0x77:
228 strcat(str, "VI");
229 break;
230 default:
231 sprintf(un_str, "(%x)", ha->fw_attributes);
232 strcat(str, un_str);
233 break;
234 }
235 if (ha->fw_attributes & 0x100)
236 strcat(str, "X");
237
238 return (str);
239 }
240
241 /**************************************************************************
242 * qla2x00_queuecommand
243 *
244 * Description:
245 * Queue a command to the controller.
246 *
247 * Input:
248 * cmd - pointer to Scsi cmd structure
249 * fn - pointer to Scsi done function
250 *
251 * Returns:
252 * 0 - Always
253 *
254 * Note:
255 * The mid-level driver tries to ensures that queuecommand never gets invoked
256 * concurrently with itself or the interrupt handler (although the
257 * interrupt handler may call this routine as part of request-completion
258 * handling).
259 **************************************************************************/
260 static int
261 qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
262 {
263 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
264 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
265 srb_t *sp;
266 int rval;
267
268 if (!fcport) {
269 cmd->result = DID_NO_CONNECT << 16;
270 goto qc_fail_command;
271 }
272
273 if (atomic_read(&fcport->state) != FCS_ONLINE) {
274 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
275 atomic_read(&ha->loop_state) == LOOP_DEAD) {
276 cmd->result = DID_NO_CONNECT << 16;
277 goto qc_fail_command;
278 }
279 goto qc_host_busy;
280 }
281
282 spin_unlock_irq(ha->host->host_lock);
283
284 /* Allocate a command packet from the "sp" pool. */
285 if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
286 goto qc_host_busy_lock;
287 }
288
289 sp->ha = ha;
290 sp->fcport = fcport;
291 sp->cmd = cmd;
292 sp->flags = 0;
293
294 CMD_SP(cmd) = (void *)sp;
295 cmd->scsi_done = done;
296
297 rval = qla2x00_start_scsi(sp);
298 if (rval != QLA_SUCCESS)
299 goto qc_host_busy_free_sp;
300
301 /* Manage unprocessed RIO/ZIO commands in response queue. */
302 if (ha->flags.online && ha->flags.process_response_queue &&
303 ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
304 unsigned long flags;
305
306 spin_lock_irqsave(&ha->hardware_lock, flags);
307 qla2x00_process_response_queue(ha);
308 spin_unlock_irqrestore(&ha->hardware_lock, flags);
309 }
310
311 spin_lock_irq(ha->host->host_lock);
312
313 return 0;
314
315 qc_host_busy_free_sp:
316 qla2x00_sp_free_dma(ha, sp);
317 CMD_SP(cmd) = NULL;
318 mempool_free(sp, ha->srb_mempool);
319
320 qc_host_busy_lock:
321 spin_lock_irq(ha->host->host_lock);
322
323 qc_host_busy:
324 return SCSI_MLQUEUE_HOST_BUSY;
325
326 qc_fail_command:
327 done(cmd);
328
329 return 0;
330 }
331
332 /*
333 * qla2x00_eh_wait_on_command
334 * Waits for the command to be returned by the Firmware for some
335 * max time.
336 *
337 * Input:
338 * ha = actual ha whose done queue will contain the command
339 * returned by firmware.
340 * cmd = Scsi Command to wait on.
341 * flag = Abort/Reset(Bus or Device Reset)
342 *
343 * Return:
344 * Not Found : 0
345 * Found : 1
346 */
347 static int
348 qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
349 {
350 #define ABORT_POLLING_PERIOD HZ
351 #define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
352 unsigned long wait_iter = ABORT_WAIT_ITER;
353 int ret = QLA_SUCCESS;
354
355 while (CMD_SP(cmd)) {
356 set_current_state(TASK_UNINTERRUPTIBLE);
357 schedule_timeout(ABORT_POLLING_PERIOD);
358
359 if (--wait_iter)
360 break;
361 }
362 if (CMD_SP(cmd))
363 ret = QLA_FUNCTION_FAILED;
364
365 return ret;
366 }
367
368 /*
369 * qla2x00_wait_for_hba_online
370 * Wait till the HBA is online after going through
371 * <= MAX_RETRIES_OF_ISP_ABORT or
372 * finally HBA is disabled ie marked offline
373 *
374 * Input:
375 * ha - pointer to host adapter structure
376 *
377 * Note:
378 * Does context switching-Release SPIN_LOCK
379 * (if any) before calling this routine.
380 *
381 * Return:
382 * Success (Adapter is online) : 0
383 * Failed (Adapter is offline/disabled) : 1
384 */
385 static int
386 qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
387 {
388 int return_status;
389 unsigned long wait_online;
390
391 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
392 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
393 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
394 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
395 ha->dpc_active) && time_before(jiffies, wait_online)) {
396
397 msleep(1000);
398 }
399 if (ha->flags.online)
400 return_status = QLA_SUCCESS;
401 else
402 return_status = QLA_FUNCTION_FAILED;
403
404 DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
405
406 return (return_status);
407 }
408
409 /*
410 * qla2x00_wait_for_loop_ready
411 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
412 * to be in LOOP_READY state.
413 * Input:
414 * ha - pointer to host adapter structure
415 *
416 * Note:
417 * Does context switching-Release SPIN_LOCK
418 * (if any) before calling this routine.
419 *
420 *
421 * Return:
422 * Success (LOOP_READY) : 0
423 * Failed (LOOP_NOT_READY) : 1
424 */
425 static inline int
426 qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
427 {
428 int return_status = QLA_SUCCESS;
429 unsigned long loop_timeout ;
430
431 /* wait for 5 min at the max for loop to be ready */
432 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
433
434 while ((!atomic_read(&ha->loop_down_timer) &&
435 atomic_read(&ha->loop_state) == LOOP_DOWN) ||
436 atomic_read(&ha->loop_state) != LOOP_READY) {
437 msleep(1000);
438 if (time_after_eq(jiffies, loop_timeout)) {
439 return_status = QLA_FUNCTION_FAILED;
440 break;
441 }
442 }
443 return (return_status);
444 }
445
446 /**************************************************************************
447 * qla2xxx_eh_abort
448 *
449 * Description:
450 * The abort function will abort the specified command.
451 *
452 * Input:
453 * cmd = Linux SCSI command packet to be aborted.
454 *
455 * Returns:
456 * Either SUCCESS or FAILED.
457 *
458 * Note:
459 **************************************************************************/
460 int
461 qla2xxx_eh_abort(struct scsi_cmnd *cmd)
462 {
463 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
464 srb_t *sp;
465 int ret, i;
466 unsigned int id, lun;
467 unsigned long serial;
468 unsigned long flags;
469
470 if (!CMD_SP(cmd))
471 return FAILED;
472
473 ret = FAILED;
474
475 id = cmd->device->id;
476 lun = cmd->device->lun;
477 serial = cmd->serial_number;
478
479 /* Check active list for command command. */
480 spin_lock_irqsave(&ha->hardware_lock, flags);
481 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
482 sp = ha->outstanding_cmds[i];
483
484 if (sp == NULL)
485 continue;
486
487 if (sp->cmd != cmd)
488 continue;
489
490 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
491 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
492 sp->state));
493 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
494
495 spin_unlock_irqrestore(&ha->hardware_lock, flags);
496 if (ha->isp_ops.abort_command(ha, sp)) {
497 DEBUG2(printk("%s(%ld): abort_command "
498 "mbx failed.\n", __func__, ha->host_no));
499 } else {
500 DEBUG3(printk("%s(%ld): abort_command "
501 "mbx success.\n", __func__, ha->host_no));
502 ret = SUCCESS;
503 }
504 spin_lock_irqsave(&ha->hardware_lock, flags);
505
506 break;
507 }
508 spin_unlock_irqrestore(&ha->hardware_lock, flags);
509
510 /* Wait for the command to be returned. */
511 if (ret == SUCCESS) {
512 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
513 qla_printk(KERN_ERR, ha,
514 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
515 "%x.\n", ha->host_no, id, lun, serial, ret);
516 }
517 }
518
519 qla_printk(KERN_INFO, ha,
520 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
521 id, lun, serial, ret);
522
523 return ret;
524 }
525
526 /**************************************************************************
527 * qla2x00_eh_wait_for_pending_target_commands
528 *
529 * Description:
530 * Waits for all the commands to come back from the specified target.
531 *
532 * Input:
533 * ha - pointer to scsi_qla_host structure.
534 * t - target
535 * Returns:
536 * Either SUCCESS or FAILED.
537 *
538 * Note:
539 **************************************************************************/
540 static int
541 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
542 {
543 int cnt;
544 int status;
545 srb_t *sp;
546 struct scsi_cmnd *cmd;
547 unsigned long flags;
548
549 status = 0;
550
551 /*
552 * Waiting for all commands for the designated target in the active
553 * array
554 */
555 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
556 spin_lock_irqsave(&ha->hardware_lock, flags);
557 sp = ha->outstanding_cmds[cnt];
558 if (sp) {
559 cmd = sp->cmd;
560 spin_unlock_irqrestore(&ha->hardware_lock, flags);
561 if (cmd->device->id == t) {
562 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
563 status = 1;
564 break;
565 }
566 }
567 } else {
568 spin_unlock_irqrestore(&ha->hardware_lock, flags);
569 }
570 }
571 return (status);
572 }
573
574
575 /**************************************************************************
576 * qla2xxx_eh_device_reset
577 *
578 * Description:
579 * The device reset function will reset the target and abort any
580 * executing commands.
581 *
582 * NOTE: The use of SP is undefined within this context. Do *NOT*
583 * attempt to use this value, even if you determine it is
584 * non-null.
585 *
586 * Input:
587 * cmd = Linux SCSI command packet of the command that cause the
588 * bus device reset.
589 *
590 * Returns:
591 * SUCCESS/FAILURE (defined as macro in scsi.h).
592 *
593 **************************************************************************/
594 int
595 qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
596 {
597 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
598 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
599 srb_t *sp;
600 int ret;
601 unsigned int id, lun;
602 unsigned long serial;
603
604 ret = FAILED;
605
606 id = cmd->device->id;
607 lun = cmd->device->lun;
608 serial = cmd->serial_number;
609
610 sp = (srb_t *) CMD_SP(cmd);
611 if (!sp || !fcport)
612 return ret;
613
614 qla_printk(KERN_INFO, ha,
615 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
616
617 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
618 goto eh_dev_reset_done;
619
620 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
621 if (qla2x00_device_reset(ha, fcport) == 0)
622 ret = SUCCESS;
623
624 #if defined(LOGOUT_AFTER_DEVICE_RESET)
625 if (ret == SUCCESS) {
626 if (fcport->flags & FC_FABRIC_DEVICE) {
627 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
628 qla2x00_mark_device_lost(ha, fcport);
629 }
630 }
631 #endif
632 } else {
633 DEBUG2(printk(KERN_INFO
634 "%s failed: loop not ready\n",__func__);)
635 }
636
637 if (ret == FAILED) {
638 DEBUG3(printk("%s(%ld): device reset failed\n",
639 __func__, ha->host_no));
640 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
641 __func__);
642
643 goto eh_dev_reset_done;
644 }
645
646 /*
647 * If we are coming down the EH path, wait for all commands to
648 * complete for the device.
649 */
650 if (cmd->device->host->eh_active) {
651 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
652 ret = FAILED;
653
654 if (ret == FAILED) {
655 DEBUG3(printk("%s(%ld): failed while waiting for "
656 "commands\n", __func__, ha->host_no));
657 qla_printk(KERN_INFO, ha,
658 "%s: failed while waiting for commands\n",
659 __func__);
660
661 goto eh_dev_reset_done;
662 }
663 }
664
665 qla_printk(KERN_INFO, ha,
666 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
667
668 eh_dev_reset_done:
669 return ret;
670 }
671
672 /**************************************************************************
673 * qla2x00_eh_wait_for_pending_commands
674 *
675 * Description:
676 * Waits for all the commands to come back from the specified host.
677 *
678 * Input:
679 * ha - pointer to scsi_qla_host structure.
680 *
681 * Returns:
682 * 1 : SUCCESS
683 * 0 : FAILED
684 *
685 * Note:
686 **************************************************************************/
687 static int
688 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
689 {
690 int cnt;
691 int status;
692 srb_t *sp;
693 struct scsi_cmnd *cmd;
694 unsigned long flags;
695
696 status = 1;
697
698 /*
699 * Waiting for all commands for the designated target in the active
700 * array
701 */
702 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
703 spin_lock_irqsave(&ha->hardware_lock, flags);
704 sp = ha->outstanding_cmds[cnt];
705 if (sp) {
706 cmd = sp->cmd;
707 spin_unlock_irqrestore(&ha->hardware_lock, flags);
708 status = qla2x00_eh_wait_on_command(ha, cmd);
709 if (status == 0)
710 break;
711 }
712 else {
713 spin_unlock_irqrestore(&ha->hardware_lock, flags);
714 }
715 }
716 return (status);
717 }
718
719
720 /**************************************************************************
721 * qla2xxx_eh_bus_reset
722 *
723 * Description:
724 * The bus reset function will reset the bus and abort any executing
725 * commands.
726 *
727 * Input:
728 * cmd = Linux SCSI command packet of the command that cause the
729 * bus reset.
730 *
731 * Returns:
732 * SUCCESS/FAILURE (defined as macro in scsi.h).
733 *
734 **************************************************************************/
735 int
736 qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
737 {
738 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
739 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
740 srb_t *sp;
741 int ret;
742 unsigned int id, lun;
743 unsigned long serial;
744
745 ret = FAILED;
746
747 id = cmd->device->id;
748 lun = cmd->device->lun;
749 serial = cmd->serial_number;
750
751 sp = (srb_t *) CMD_SP(cmd);
752 if (!sp || !fcport)
753 return ret;
754
755 qla_printk(KERN_INFO, ha,
756 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
757
758 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
759 DEBUG2(printk("%s failed:board disabled\n",__func__));
760 goto eh_bus_reset_done;
761 }
762
763 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
764 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
765 ret = SUCCESS;
766 }
767 if (ret == FAILED)
768 goto eh_bus_reset_done;
769
770 /* Waiting for our command in done_queue to be returned to OS.*/
771 if (cmd->device->host->eh_active)
772 if (!qla2x00_eh_wait_for_pending_commands(ha))
773 ret = FAILED;
774
775 eh_bus_reset_done:
776 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
777 (ret == FAILED) ? "failed" : "succeded");
778
779 return ret;
780 }
781
782 /**************************************************************************
783 * qla2xxx_eh_host_reset
784 *
785 * Description:
786 * The reset function will reset the Adapter.
787 *
788 * Input:
789 * cmd = Linux SCSI command packet of the command that cause the
790 * adapter reset.
791 *
792 * Returns:
793 * Either SUCCESS or FAILED.
794 *
795 * Note:
796 **************************************************************************/
797 int
798 qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
799 {
800 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
801 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
802 srb_t *sp;
803 int ret;
804 unsigned int id, lun;
805 unsigned long serial;
806
807 ret = FAILED;
808
809 id = cmd->device->id;
810 lun = cmd->device->lun;
811 serial = cmd->serial_number;
812
813 sp = (srb_t *) CMD_SP(cmd);
814 if (!sp || !fcport)
815 return ret;
816
817 qla_printk(KERN_INFO, ha,
818 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
819
820 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
821 goto eh_host_reset_lock;
822
823 /*
824 * Fixme-may be dpc thread is active and processing
825 * loop_resync,so wait a while for it to
826 * be completed and then issue big hammer.Otherwise
827 * it may cause I/O failure as big hammer marks the
828 * devices as lost kicking of the port_down_timer
829 * while dpc is stuck for the mailbox to complete.
830 */
831 qla2x00_wait_for_loop_ready(ha);
832 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
833 if (qla2x00_abort_isp(ha)) {
834 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
835 /* failed. schedule dpc to try */
836 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
837
838 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
839 goto eh_host_reset_lock;
840 }
841 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
842
843 /* Waiting for our command in done_queue to be returned to OS.*/
844 if (qla2x00_eh_wait_for_pending_commands(ha))
845 ret = SUCCESS;
846
847 eh_host_reset_lock:
848 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
849 (ret == FAILED) ? "failed" : "succeded");
850
851 return ret;
852 }
853
854 /*
855 * qla2x00_loop_reset
856 * Issue loop reset.
857 *
858 * Input:
859 * ha = adapter block pointer.
860 *
861 * Returns:
862 * 0 = success
863 */
864 static int
865 qla2x00_loop_reset(scsi_qla_host_t *ha)
866 {
867 int status = QLA_SUCCESS;
868 struct fc_port *fcport;
869
870 if (ha->flags.enable_lip_reset) {
871 status = qla2x00_lip_reset(ha);
872 }
873
874 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
875 list_for_each_entry(fcport, &ha->fcports, list) {
876 if (fcport->port_type != FCT_TARGET)
877 continue;
878
879 status = qla2x00_target_reset(ha, fcport);
880 if (status != QLA_SUCCESS)
881 break;
882 }
883 }
884
885 if (status == QLA_SUCCESS &&
886 ((!ha->flags.enable_target_reset &&
887 !ha->flags.enable_lip_reset) ||
888 ha->flags.enable_lip_full_login)) {
889
890 status = qla2x00_full_login_lip(ha);
891 }
892
893 /* Issue marker command only when we are going to start the I/O */
894 ha->marker_needed = 1;
895
896 if (status) {
897 /* Empty */
898 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
899 __func__,
900 ha->host_no);)
901 } else {
902 /* Empty */
903 DEBUG3(printk("%s(%ld): exiting normally.\n",
904 __func__,
905 ha->host_no);)
906 }
907
908 return(status);
909 }
910
911 /*
912 * qla2x00_device_reset
913 * Issue bus device reset message to the target.
914 *
915 * Input:
916 * ha = adapter block pointer.
917 * t = SCSI ID.
918 * TARGET_QUEUE_LOCK must be released.
919 * ADAPTER_STATE_LOCK must be released.
920 *
921 * Context:
922 * Kernel context.
923 */
924 static int
925 qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
926 {
927 /* Abort Target command will clear Reservation */
928 return ha->isp_ops.abort_target(reset_fcport);
929 }
930
931 static int
932 qla2xxx_slave_alloc(struct scsi_device *sdev)
933 {
934 scsi_qla_host_t *ha = to_qla_host(sdev->host);
935 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
936 fc_port_t *fcport;
937 int found;
938
939 if (!rport)
940 return -ENXIO;
941
942 found = 0;
943 list_for_each_entry(fcport, &ha->fcports, list) {
944 if (rport->port_name ==
945 be64_to_cpu(*(uint64_t *)fcport->port_name)) {
946 found++;
947 break;
948 }
949 }
950 if (!found)
951 return -ENXIO;
952
953 sdev->hostdata = fcport;
954
955 return 0;
956 }
957
958 static int
959 qla2xxx_slave_configure(struct scsi_device *sdev)
960 {
961 scsi_qla_host_t *ha = to_qla_host(sdev->host);
962 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
963
964 if (sdev->tagged_supported)
965 scsi_activate_tcq(sdev, 32);
966 else
967 scsi_deactivate_tcq(sdev, 32);
968
969 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
970
971 return 0;
972 }
973
974 static void
975 qla2xxx_slave_destroy(struct scsi_device *sdev)
976 {
977 sdev->hostdata = NULL;
978 }
979
980 /**
981 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
982 * @ha: HA context
983 *
984 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
985 * supported addressing method.
986 */
987 static void
988 qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
989 {
990 /* Assume 32bit DMA address */
991 ha->flags.enable_64bit_addressing = 0;
992
993 /*
994 * Given the two variants pci_set_dma_mask(), allow the compiler to
995 * assist in setting the proper dma mask.
996 */
997 if (sizeof(dma_addr_t) > 4) {
998 if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
999 ha->flags.enable_64bit_addressing = 1;
1000 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1001 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
1002
1003 if (pci_set_consistent_dma_mask(ha->pdev,
1004 DMA_64BIT_MASK)) {
1005 qla_printk(KERN_DEBUG, ha,
1006 "Failed to set 64 bit PCI consistent mask; "
1007 "using 32 bit.\n");
1008 pci_set_consistent_dma_mask(ha->pdev,
1009 DMA_32BIT_MASK);
1010 }
1011 } else {
1012 qla_printk(KERN_DEBUG, ha,
1013 "Failed to set 64 bit PCI DMA mask, falling back "
1014 "to 32 bit MASK.\n");
1015 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1016 }
1017 } else {
1018 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1019 }
1020 }
1021
1022 static int
1023 qla2x00_iospace_config(scsi_qla_host_t *ha)
1024 {
1025 unsigned long pio, pio_len, pio_flags;
1026 unsigned long mmio, mmio_len, mmio_flags;
1027
1028 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1029 pio = pci_resource_start(ha->pdev, 0);
1030 pio_len = pci_resource_len(ha->pdev, 0);
1031 pio_flags = pci_resource_flags(ha->pdev, 0);
1032 if (pio_flags & IORESOURCE_IO) {
1033 if (pio_len < MIN_IOBASE_LEN) {
1034 qla_printk(KERN_WARNING, ha,
1035 "Invalid PCI I/O region size (%s)...\n",
1036 pci_name(ha->pdev));
1037 pio = 0;
1038 }
1039 } else {
1040 qla_printk(KERN_WARNING, ha,
1041 "region #0 not a PIO resource (%s)...\n",
1042 pci_name(ha->pdev));
1043 pio = 0;
1044 }
1045
1046 /* Use MMIO operations for all accesses. */
1047 mmio = pci_resource_start(ha->pdev, 1);
1048 mmio_len = pci_resource_len(ha->pdev, 1);
1049 mmio_flags = pci_resource_flags(ha->pdev, 1);
1050
1051 if (!(mmio_flags & IORESOURCE_MEM)) {
1052 qla_printk(KERN_ERR, ha,
1053 "region #0 not an MMIO resource (%s), aborting\n",
1054 pci_name(ha->pdev));
1055 goto iospace_error_exit;
1056 }
1057 if (mmio_len < MIN_IOBASE_LEN) {
1058 qla_printk(KERN_ERR, ha,
1059 "Invalid PCI mem region size (%s), aborting\n",
1060 pci_name(ha->pdev));
1061 goto iospace_error_exit;
1062 }
1063
1064 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1065 qla_printk(KERN_WARNING, ha,
1066 "Failed to reserve PIO/MMIO regions (%s)\n",
1067 pci_name(ha->pdev));
1068
1069 goto iospace_error_exit;
1070 }
1071
1072 ha->pio_address = pio;
1073 ha->pio_length = pio_len;
1074 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1075 if (!ha->iobase) {
1076 qla_printk(KERN_ERR, ha,
1077 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1078
1079 goto iospace_error_exit;
1080 }
1081
1082 return (0);
1083
1084 iospace_error_exit:
1085 return (-ENOMEM);
1086 }
1087
1088 static void
1089 qla2x00_enable_intrs(scsi_qla_host_t *ha)
1090 {
1091 unsigned long flags = 0;
1092 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1093
1094 spin_lock_irqsave(&ha->hardware_lock, flags);
1095 ha->interrupts_on = 1;
1096 /* enable risc and host interrupts */
1097 WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1098 RD_REG_WORD(&reg->ictrl);
1099 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1100
1101 }
1102
1103 static void
1104 qla2x00_disable_intrs(scsi_qla_host_t *ha)
1105 {
1106 unsigned long flags = 0;
1107 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1108
1109 spin_lock_irqsave(&ha->hardware_lock, flags);
1110 ha->interrupts_on = 0;
1111 /* disable risc and host interrupts */
1112 WRT_REG_WORD(&reg->ictrl, 0);
1113 RD_REG_WORD(&reg->ictrl);
1114 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1115 }
1116
1117 /*
1118 * PCI driver interface
1119 */
1120 int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1121 {
1122 int ret = -ENODEV;
1123 struct device_reg_2xxx __iomem *reg;
1124 struct Scsi_Host *host;
1125 scsi_qla_host_t *ha;
1126 unsigned long flags = 0;
1127 unsigned long wait_switch = 0;
1128 char pci_info[20];
1129 char fw_str[30];
1130 fc_port_t *fcport;
1131
1132 if (pci_enable_device(pdev))
1133 goto probe_out;
1134
1135 host = scsi_host_alloc(&qla2x00_driver_template,
1136 sizeof(scsi_qla_host_t));
1137 if (host == NULL) {
1138 printk(KERN_WARNING
1139 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1140 goto probe_disable_device;
1141 }
1142
1143 /* Clear our data area */
1144 ha = (scsi_qla_host_t *)host->hostdata;
1145 memset(ha, 0, sizeof(scsi_qla_host_t));
1146
1147 ha->pdev = pdev;
1148 ha->host = host;
1149 ha->host_no = host->host_no;
1150 ha->brd_info = brd_info;
1151 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1152
1153 /* Configure PCI I/O space */
1154 ret = qla2x00_iospace_config(ha);
1155 if (ret)
1156 goto probe_failed;
1157
1158 /* Sanitize the information from PCI BIOS. */
1159 host->irq = pdev->irq;
1160
1161 qla_printk(KERN_INFO, ha,
1162 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1163 host->irq, ha->iobase);
1164
1165 spin_lock_init(&ha->hardware_lock);
1166
1167 ha->prev_topology = 0;
1168 ha->ports = MAX_BUSES;
1169
1170 /* Assign ISP specific operations. */
1171 ha->isp_ops.pci_config = qla2100_pci_config;
1172 ha->isp_ops.reset_chip = qla2x00_reset_chip;
1173 ha->isp_ops.chip_diag = qla2x00_chip_diag;
1174 ha->isp_ops.config_rings = qla2x00_config_rings;
1175 ha->isp_ops.reset_adapter = qla2x00_reset_adapter;
1176 ha->isp_ops.nvram_config = qla2x00_nvram_config;
1177 ha->isp_ops.update_fw_options = qla2x00_update_fw_options;
1178 ha->isp_ops.load_risc = qla2x00_load_risc;
1179 ha->isp_ops.pci_info_str = qla2x00_pci_info_str;
1180 ha->isp_ops.fw_version_str = qla2x00_fw_version_str;
1181 ha->isp_ops.intr_handler = qla2100_intr_handler;
1182 ha->isp_ops.enable_intrs = qla2x00_enable_intrs;
1183 ha->isp_ops.disable_intrs = qla2x00_disable_intrs;
1184 ha->isp_ops.abort_command = qla2x00_abort_command;
1185 ha->isp_ops.abort_target = qla2x00_abort_target;
1186 ha->isp_ops.fabric_login = qla2x00_login_fabric;
1187 ha->isp_ops.fabric_logout = qla2x00_fabric_logout;
1188 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_32;
1189 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_32;
1190 ha->isp_ops.prep_ms_iocb = qla2x00_prep_ms_iocb;
1191 ha->isp_ops.read_nvram = qla2x00_read_nvram_data;
1192 ha->isp_ops.write_nvram = qla2x00_write_nvram_data;
1193 ha->isp_ops.fw_dump = qla2100_fw_dump;
1194 ha->isp_ops.ascii_fw_dump = qla2100_ascii_fw_dump;
1195 if (IS_QLA2100(ha)) {
1196 host->max_id = MAX_TARGETS_2100;
1197 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1198 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1199 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1200 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1201 host->sg_tablesize = 32;
1202 ha->gid_list_info_size = 4;
1203 } else if (IS_QLA2200(ha)) {
1204 host->max_id = MAX_TARGETS_2200;
1205 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1206 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1207 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1208 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1209 ha->gid_list_info_size = 4;
1210 } else /*if (IS_QLA2300(ha))*/ {
1211 host->max_id = MAX_TARGETS_2200;
1212 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1213 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1214 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1215 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1216 ha->isp_ops.pci_config = qla2300_pci_config;
1217 ha->isp_ops.intr_handler = qla2300_intr_handler;
1218 ha->isp_ops.fw_dump = qla2300_fw_dump;
1219 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1220 ha->gid_list_info_size = 6;
1221 }
1222 host->can_queue = ha->request_q_length + 128;
1223
1224 /* load the F/W, read paramaters, and init the H/W */
1225 ha->instance = num_hosts;
1226
1227 init_MUTEX(&ha->mbx_cmd_sem);
1228 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1229
1230 INIT_LIST_HEAD(&ha->list);
1231 INIT_LIST_HEAD(&ha->fcports);
1232 INIT_LIST_HEAD(&ha->rscn_fcports);
1233
1234 /*
1235 * These locks are used to prevent more than one CPU
1236 * from modifying the queue at the same time. The
1237 * higher level "host_lock" will reduce most
1238 * contention for these locks.
1239 */
1240 spin_lock_init(&ha->mbx_reg_lock);
1241
1242 ha->dpc_pid = -1;
1243 init_completion(&ha->dpc_inited);
1244 init_completion(&ha->dpc_exited);
1245
1246 qla2x00_config_dma_addressing(ha);
1247 if (qla2x00_mem_alloc(ha)) {
1248 qla_printk(KERN_WARNING, ha,
1249 "[ERROR] Failed to allocate memory for adapter\n");
1250
1251 ret = -ENOMEM;
1252 goto probe_failed;
1253 }
1254
1255 if (qla2x00_initialize_adapter(ha) &&
1256 !(ha->device_flags & DFLG_NO_CABLE)) {
1257
1258 qla_printk(KERN_WARNING, ha,
1259 "Failed to initialize adapter\n");
1260
1261 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1262 "Adapter flags %x.\n",
1263 ha->host_no, ha->device_flags));
1264
1265 ret = -ENODEV;
1266 goto probe_failed;
1267 }
1268
1269 /*
1270 * Startup the kernel thread for this host adapter
1271 */
1272 ha->dpc_should_die = 0;
1273 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1274 if (ha->dpc_pid < 0) {
1275 qla_printk(KERN_WARNING, ha,
1276 "Unable to start DPC thread!\n");
1277
1278 ret = -ENODEV;
1279 goto probe_failed;
1280 }
1281 wait_for_completion(&ha->dpc_inited);
1282
1283 host->this_id = 255;
1284 host->cmd_per_lun = 3;
1285 host->unique_id = ha->instance;
1286 host->max_cmd_len = MAX_CMDSZ;
1287 host->max_channel = ha->ports - 1;
1288 host->max_lun = MAX_LUNS;
1289 host->transportt = qla2xxx_transport_template;
1290
1291 ret = request_irq(host->irq, ha->isp_ops.intr_handler,
1292 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1293 if (ret) {
1294 qla_printk(KERN_WARNING, ha,
1295 "Failed to reserve interrupt %d already in use.\n",
1296 host->irq);
1297 goto probe_failed;
1298 }
1299
1300 /* Initialized the timer */
1301 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1302
1303 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1304 ha->host_no, ha));
1305
1306 reg = &ha->iobase->isp;
1307
1308 ha->isp_ops.disable_intrs(ha);
1309
1310 /* Ensure mailbox registers are free. */
1311 spin_lock_irqsave(&ha->hardware_lock, flags);
1312 WRT_REG_WORD(&reg->semaphore, 0);
1313 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
1314 WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);
1315
1316 /* Enable proper parity */
1317 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1318 if (IS_QLA2300(ha))
1319 /* SRAM parity */
1320 WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x1));
1321 else
1322 /* SRAM, Instruction RAM and GP RAM parity */
1323 WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x7));
1324 }
1325 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1326
1327 ha->isp_ops.enable_intrs(ha);
1328
1329 /* v2.19.5b6 */
1330 /*
1331 * Wait around max loop_reset_delay secs for the devices to come
1332 * on-line. We don't want Linux scanning before we are ready.
1333 *
1334 */
1335 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1336 time_before(jiffies,wait_switch) &&
1337 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1338 && (ha->device_flags & SWITCH_FOUND) ;) {
1339
1340 qla2x00_check_fabric_devices(ha);
1341
1342 msleep(10);
1343 }
1344
1345 pci_set_drvdata(pdev, ha);
1346 ha->flags.init_done = 1;
1347 num_hosts++;
1348
1349 ret = scsi_add_host(host, &pdev->dev);
1350 if (ret)
1351 goto probe_failed;
1352
1353 qla2x00_alloc_sysfs_attr(ha);
1354
1355 qla2x00_init_host_attr(ha);
1356
1357 qla_printk(KERN_INFO, ha, "\n"
1358 " QLogic Fibre Channel HBA Driver: %s\n"
1359 " QLogic %s - %s\n"
1360 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1361 ha->model_number, ha->model_desc ? ha->model_desc: "",
1362 ha->brd_info->isp_name, ha->isp_ops.pci_info_str(ha, pci_info),
1363 pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1364 ha->host_no, ha->isp_ops.fw_version_str(ha, fw_str));
1365
1366 /* Go with fc_rport registration. */
1367 list_for_each_entry(fcport, &ha->fcports, list)
1368 qla2x00_reg_remote_port(ha, fcport);
1369
1370 return 0;
1371
1372 probe_failed:
1373 fc_remove_host(ha->host);
1374
1375 qla2x00_free_device(ha);
1376
1377 scsi_host_put(host);
1378
1379 probe_disable_device:
1380 pci_disable_device(pdev);
1381
1382 probe_out:
1383 return ret;
1384 }
1385 EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1386
1387 void qla2x00_remove_one(struct pci_dev *pdev)
1388 {
1389 scsi_qla_host_t *ha;
1390
1391 ha = pci_get_drvdata(pdev);
1392
1393 qla2x00_free_sysfs_attr(ha);
1394
1395 fc_remove_host(ha->host);
1396
1397 scsi_remove_host(ha->host);
1398
1399 qla2x00_free_device(ha);
1400
1401 scsi_host_put(ha->host);
1402
1403 pci_set_drvdata(pdev, NULL);
1404 }
1405 EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1406
1407 static void
1408 qla2x00_free_device(scsi_qla_host_t *ha)
1409 {
1410 int ret;
1411
1412 /* Abort any outstanding IO descriptors. */
1413 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1414 qla2x00_cancel_io_descriptors(ha);
1415
1416 /* turn-off interrupts on the card */
1417 if (ha->interrupts_on)
1418 ha->isp_ops.disable_intrs(ha);
1419
1420 /* Disable timer */
1421 if (ha->timer_active)
1422 qla2x00_stop_timer(ha);
1423
1424 /* Kill the kernel thread for this host */
1425 if (ha->dpc_pid >= 0) {
1426 ha->dpc_should_die = 1;
1427 wmb();
1428 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1429 if (ret) {
1430 qla_printk(KERN_ERR, ha,
1431 "Unable to signal DPC thread -- (%d)\n", ret);
1432
1433 /* TODO: SOMETHING MORE??? */
1434 } else {
1435 wait_for_completion(&ha->dpc_exited);
1436 }
1437 }
1438
1439 qla2x00_mem_free(ha);
1440
1441
1442 ha->flags.online = 0;
1443
1444 /* Detach interrupts */
1445 if (ha->pdev->irq)
1446 free_irq(ha->pdev->irq, ha);
1447
1448 /* release io space registers */
1449 if (ha->iobase)
1450 iounmap(ha->iobase);
1451 pci_release_regions(ha->pdev);
1452
1453 pci_disable_device(ha->pdev);
1454 }
1455
1456 /*
1457 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1458 *
1459 * Input: ha = adapter block pointer. fcport = port structure pointer.
1460 *
1461 * Return: None.
1462 *
1463 * Context:
1464 */
1465 void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1466 int do_login)
1467 {
1468 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1469 fc_remote_port_block(fcport->rport);
1470 /*
1471 * We may need to retry the login, so don't change the state of the
1472 * port but do the retries.
1473 */
1474 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1475 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1476
1477 if (!do_login)
1478 return;
1479
1480 if (fcport->login_retry == 0) {
1481 fcport->login_retry = ha->login_retry_count;
1482 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1483
1484 DEBUG(printk("scsi(%ld): Port login retry: "
1485 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1486 "id = 0x%04x retry cnt=%d\n",
1487 ha->host_no,
1488 fcport->port_name[0],
1489 fcport->port_name[1],
1490 fcport->port_name[2],
1491 fcport->port_name[3],
1492 fcport->port_name[4],
1493 fcport->port_name[5],
1494 fcport->port_name[6],
1495 fcport->port_name[7],
1496 fcport->loop_id,
1497 fcport->login_retry));
1498 }
1499 }
1500
1501 /*
1502 * qla2x00_mark_all_devices_lost
1503 * Updates fcport state when device goes offline.
1504 *
1505 * Input:
1506 * ha = adapter block pointer.
1507 * fcport = port structure pointer.
1508 *
1509 * Return:
1510 * None.
1511 *
1512 * Context:
1513 */
1514 void
1515 qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1516 {
1517 fc_port_t *fcport;
1518
1519 list_for_each_entry(fcport, &ha->fcports, list) {
1520 if (fcport->port_type != FCT_TARGET)
1521 continue;
1522
1523 /*
1524 * No point in marking the device as lost, if the device is
1525 * already DEAD.
1526 */
1527 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1528 continue;
1529 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1530 fc_remote_port_block(fcport->rport);
1531 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1532 }
1533 }
1534
1535 /*
1536 * qla2x00_mem_alloc
1537 * Allocates adapter memory.
1538 *
1539 * Returns:
1540 * 0 = success.
1541 * 1 = failure.
1542 */
1543 static uint8_t
1544 qla2x00_mem_alloc(scsi_qla_host_t *ha)
1545 {
1546 char name[16];
1547 uint8_t status = 1;
1548 int retry= 10;
1549
1550 do {
1551 /*
1552 * This will loop only once if everything goes well, else some
1553 * number of retries will be performed to get around a kernel
1554 * bug where available mem is not allocated until after a
1555 * little delay and a retry.
1556 */
1557 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1558 (ha->request_q_length + 1) * sizeof(request_t),
1559 &ha->request_dma, GFP_KERNEL);
1560 if (ha->request_ring == NULL) {
1561 qla_printk(KERN_WARNING, ha,
1562 "Memory Allocation failed - request_ring\n");
1563
1564 qla2x00_mem_free(ha);
1565 msleep(100);
1566
1567 continue;
1568 }
1569
1570 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1571 (ha->response_q_length + 1) * sizeof(response_t),
1572 &ha->response_dma, GFP_KERNEL);
1573 if (ha->response_ring == NULL) {
1574 qla_printk(KERN_WARNING, ha,
1575 "Memory Allocation failed - response_ring\n");
1576
1577 qla2x00_mem_free(ha);
1578 msleep(100);
1579
1580 continue;
1581 }
1582
1583 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1584 &ha->gid_list_dma, GFP_KERNEL);
1585 if (ha->gid_list == NULL) {
1586 qla_printk(KERN_WARNING, ha,
1587 "Memory Allocation failed - gid_list\n");
1588
1589 qla2x00_mem_free(ha);
1590 msleep(100);
1591
1592 continue;
1593 }
1594
1595 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1596 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1597 if (ha->rlc_rsp == NULL) {
1598 qla_printk(KERN_WARNING, ha,
1599 "Memory Allocation failed - rlc");
1600
1601 qla2x00_mem_free(ha);
1602 msleep(100);
1603
1604 continue;
1605 }
1606
1607 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1608 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1609 DMA_POOL_SIZE, 8, 0);
1610 if (ha->s_dma_pool == NULL) {
1611 qla_printk(KERN_WARNING, ha,
1612 "Memory Allocation failed - s_dma_pool\n");
1613
1614 qla2x00_mem_free(ha);
1615 msleep(100);
1616
1617 continue;
1618 }
1619
1620 /* get consistent memory allocated for init control block */
1621 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1622 &ha->init_cb_dma);
1623 if (ha->init_cb == NULL) {
1624 qla_printk(KERN_WARNING, ha,
1625 "Memory Allocation failed - init_cb\n");
1626
1627 qla2x00_mem_free(ha);
1628 msleep(100);
1629
1630 continue;
1631 }
1632 memset(ha->init_cb, 0, sizeof(init_cb_t));
1633
1634 /* Get consistent memory allocated for Get Port Database cmd */
1635 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1636 &ha->iodesc_pd_dma);
1637 if (ha->iodesc_pd == NULL) {
1638 /* error */
1639 qla_printk(KERN_WARNING, ha,
1640 "Memory Allocation failed - iodesc_pd\n");
1641
1642 qla2x00_mem_free(ha);
1643 msleep(100);
1644
1645 continue;
1646 }
1647 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1648
1649 /* Allocate ioctl related memory. */
1650 if (qla2x00_alloc_ioctl_mem(ha)) {
1651 qla_printk(KERN_WARNING, ha,
1652 "Memory Allocation failed - ioctl_mem\n");
1653
1654 qla2x00_mem_free(ha);
1655 msleep(100);
1656
1657 continue;
1658 }
1659
1660 if (qla2x00_allocate_sp_pool(ha)) {
1661 qla_printk(KERN_WARNING, ha,
1662 "Memory Allocation failed - "
1663 "qla2x00_allocate_sp_pool()\n");
1664
1665 qla2x00_mem_free(ha);
1666 msleep(100);
1667
1668 continue;
1669 }
1670
1671 /* Allocate memory for SNS commands */
1672 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1673 /* Get consistent memory allocated for SNS commands */
1674 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1675 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1676 GFP_KERNEL);
1677 if (ha->sns_cmd == NULL) {
1678 /* error */
1679 qla_printk(KERN_WARNING, ha,
1680 "Memory Allocation failed - sns_cmd\n");
1681
1682 qla2x00_mem_free(ha);
1683 msleep(100);
1684
1685 continue;
1686 }
1687 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1688 } else {
1689 /* Get consistent memory allocated for MS IOCB */
1690 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1691 &ha->ms_iocb_dma);
1692 if (ha->ms_iocb == NULL) {
1693 /* error */
1694 qla_printk(KERN_WARNING, ha,
1695 "Memory Allocation failed - ms_iocb\n");
1696
1697 qla2x00_mem_free(ha);
1698 msleep(100);
1699
1700 continue;
1701 }
1702 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1703
1704 /*
1705 * Get consistent memory allocated for CT SNS
1706 * commands
1707 */
1708 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1709 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1710 GFP_KERNEL);
1711 if (ha->ct_sns == NULL) {
1712 /* error */
1713 qla_printk(KERN_WARNING, ha,
1714 "Memory Allocation failed - ct_sns\n");
1715
1716 qla2x00_mem_free(ha);
1717 msleep(100);
1718
1719 continue;
1720 }
1721 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1722 }
1723
1724 /* Done all allocations without any error. */
1725 status = 0;
1726
1727 } while (retry-- && status != 0);
1728
1729 if (status) {
1730 printk(KERN_WARNING
1731 "%s(): **** FAILED ****\n", __func__);
1732 }
1733
1734 return(status);
1735 }
1736
1737 /*
1738 * qla2x00_mem_free
1739 * Frees all adapter allocated memory.
1740 *
1741 * Input:
1742 * ha = adapter block pointer.
1743 */
1744 static void
1745 qla2x00_mem_free(scsi_qla_host_t *ha)
1746 {
1747 struct list_head *fcpl, *fcptemp;
1748 fc_port_t *fcport;
1749 unsigned long wtime;/* max wait time if mbx cmd is busy. */
1750
1751 if (ha == NULL) {
1752 /* error */
1753 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1754 return;
1755 }
1756
1757 /* Make sure all other threads are stopped. */
1758 wtime = 60 * HZ;
1759 while (ha->dpc_wait && wtime) {
1760 set_current_state(TASK_INTERRUPTIBLE);
1761 wtime = schedule_timeout(wtime);
1762 }
1763
1764 /* free ioctl memory */
1765 qla2x00_free_ioctl_mem(ha);
1766
1767 /* free sp pool */
1768 qla2x00_free_sp_pool(ha);
1769
1770 if (ha->sns_cmd)
1771 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1772 ha->sns_cmd, ha->sns_cmd_dma);
1773
1774 if (ha->ct_sns)
1775 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1776 ha->ct_sns, ha->ct_sns_dma);
1777
1778 if (ha->ms_iocb)
1779 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1780
1781 if (ha->iodesc_pd)
1782 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1783
1784 if (ha->init_cb)
1785 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
1786
1787 if (ha->s_dma_pool)
1788 dma_pool_destroy(ha->s_dma_pool);
1789
1790 if (ha->rlc_rsp)
1791 dma_free_coherent(&ha->pdev->dev,
1792 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
1793 ha->rlc_rsp_dma);
1794
1795 if (ha->gid_list)
1796 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
1797 ha->gid_list_dma);
1798
1799 if (ha->response_ring)
1800 dma_free_coherent(&ha->pdev->dev,
1801 (ha->response_q_length + 1) * sizeof(response_t),
1802 ha->response_ring, ha->response_dma);
1803
1804 if (ha->request_ring)
1805 dma_free_coherent(&ha->pdev->dev,
1806 (ha->request_q_length + 1) * sizeof(request_t),
1807 ha->request_ring, ha->request_dma);
1808
1809 ha->sns_cmd = NULL;
1810 ha->sns_cmd_dma = 0;
1811 ha->ct_sns = NULL;
1812 ha->ct_sns_dma = 0;
1813 ha->ms_iocb = NULL;
1814 ha->ms_iocb_dma = 0;
1815 ha->iodesc_pd = NULL;
1816 ha->iodesc_pd_dma = 0;
1817 ha->init_cb = NULL;
1818 ha->init_cb_dma = 0;
1819
1820 ha->s_dma_pool = NULL;
1821
1822 ha->rlc_rsp = NULL;
1823 ha->rlc_rsp_dma = 0;
1824 ha->gid_list = NULL;
1825 ha->gid_list_dma = 0;
1826
1827 ha->response_ring = NULL;
1828 ha->response_dma = 0;
1829 ha->request_ring = NULL;
1830 ha->request_dma = 0;
1831
1832 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
1833 fcport = list_entry(fcpl, fc_port_t, list);
1834
1835 /* fc ports */
1836 list_del_init(&fcport->list);
1837 kfree(fcport);
1838 }
1839 INIT_LIST_HEAD(&ha->fcports);
1840
1841 if (ha->fw_dump)
1842 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
1843
1844 if (ha->fw_dump_buffer)
1845 vfree(ha->fw_dump_buffer);
1846
1847 ha->fw_dump = NULL;
1848 ha->fw_dump_reading = 0;
1849 ha->fw_dump_buffer = NULL;
1850 }
1851
1852 /*
1853 * qla2x00_allocate_sp_pool
1854 * This routine is called during initialization to allocate
1855 * memory for local srb_t.
1856 *
1857 * Input:
1858 * ha = adapter block pointer.
1859 *
1860 * Context:
1861 * Kernel context.
1862 *
1863 * Note: Sets the ref_count for non Null sp to one.
1864 */
1865 static int
1866 qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
1867 {
1868 int rval;
1869
1870 rval = QLA_SUCCESS;
1871 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
1872 mempool_free_slab, srb_cachep);
1873 if (ha->srb_mempool == NULL) {
1874 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
1875 rval = QLA_FUNCTION_FAILED;
1876 }
1877 return (rval);
1878 }
1879
1880 /*
1881 * This routine frees all adapter allocated memory.
1882 *
1883 */
1884 static void
1885 qla2x00_free_sp_pool( scsi_qla_host_t *ha)
1886 {
1887 if (ha->srb_mempool) {
1888 mempool_destroy(ha->srb_mempool);
1889 ha->srb_mempool = NULL;
1890 }
1891 }
1892
1893 /**************************************************************************
1894 * qla2x00_do_dpc
1895 * This kernel thread is a task that is schedule by the interrupt handler
1896 * to perform the background processing for interrupts.
1897 *
1898 * Notes:
1899 * This task always run in the context of a kernel thread. It
1900 * is kick-off by the driver's detect code and starts up
1901 * up one per adapter. It immediately goes to sleep and waits for
1902 * some fibre event. When either the interrupt handler or
1903 * the timer routine detects a event it will one of the task
1904 * bits then wake us up.
1905 **************************************************************************/
1906 static int
1907 qla2x00_do_dpc(void *data)
1908 {
1909 DECLARE_MUTEX_LOCKED(sem);
1910 scsi_qla_host_t *ha;
1911 fc_port_t *fcport;
1912 uint8_t status;
1913 uint16_t next_loopid;
1914
1915 ha = (scsi_qla_host_t *)data;
1916
1917 lock_kernel();
1918
1919 daemonize("%s_dpc", ha->host_str);
1920 allow_signal(SIGHUP);
1921
1922 ha->dpc_wait = &sem;
1923
1924 set_user_nice(current, -20);
1925
1926 unlock_kernel();
1927
1928 complete(&ha->dpc_inited);
1929
1930 while (1) {
1931 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
1932
1933 if (down_interruptible(&sem))
1934 break;
1935
1936 if (ha->dpc_should_die)
1937 break;
1938
1939 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
1940
1941 /* Initialization not yet finished. Don't do anything yet. */
1942 if (!ha->flags.init_done || ha->dpc_active)
1943 continue;
1944
1945 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
1946
1947 ha->dpc_active = 1;
1948
1949 if (ha->flags.mbox_busy) {
1950 ha->dpc_active = 0;
1951 continue;
1952 }
1953
1954 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
1955
1956 DEBUG(printk("scsi(%ld): dpc: sched "
1957 "qla2x00_abort_isp ha = %p\n",
1958 ha->host_no, ha));
1959 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
1960 &ha->dpc_flags))) {
1961
1962 if (qla2x00_abort_isp(ha)) {
1963 /* failed. retry later */
1964 set_bit(ISP_ABORT_NEEDED,
1965 &ha->dpc_flags);
1966 }
1967 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
1968 }
1969 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
1970 ha->host_no));
1971 }
1972
1973 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
1974 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
1975
1976 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
1977 ha->host_no));
1978
1979 qla2x00_rst_aen(ha);
1980 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
1981 }
1982
1983 /* Retry each device up to login retry count */
1984 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
1985 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
1986 atomic_read(&ha->loop_state) != LOOP_DOWN) {
1987
1988 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
1989 ha->host_no));
1990
1991 next_loopid = 0;
1992 list_for_each_entry(fcport, &ha->fcports, list) {
1993 if (fcport->port_type != FCT_TARGET)
1994 continue;
1995
1996 /*
1997 * If the port is not ONLINE then try to login
1998 * to it if we haven't run out of retries.
1999 */
2000 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2001 fcport->login_retry) {
2002
2003 fcport->login_retry--;
2004 if (fcport->flags & FCF_FABRIC_DEVICE) {
2005 if (fcport->flags &
2006 FCF_TAPE_PRESENT)
2007 ha->isp_ops.fabric_logout(
2008 ha, fcport->loop_id,
2009 fcport->d_id.b.domain,
2010 fcport->d_id.b.area,
2011 fcport->d_id.b.al_pa);
2012 status = qla2x00_fabric_login(
2013 ha, fcport, &next_loopid);
2014 } else
2015 status =
2016 qla2x00_local_device_login(
2017 ha, fcport->loop_id);
2018
2019 if (status == QLA_SUCCESS) {
2020 fcport->old_loop_id = fcport->loop_id;
2021
2022 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2023 ha->host_no, fcport->loop_id));
2024
2025 fcport->port_login_retry_count =
2026 ha->port_down_retry_count * PORT_RETRY_TIME;
2027 atomic_set(&fcport->state, FCS_ONLINE);
2028 atomic_set(&fcport->port_down_timer,
2029 ha->port_down_retry_count * PORT_RETRY_TIME);
2030
2031 fcport->login_retry = 0;
2032 } else if (status == 1) {
2033 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2034 /* retry the login again */
2035 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2036 ha->host_no,
2037 fcport->login_retry, fcport->loop_id));
2038 } else {
2039 fcport->login_retry = 0;
2040 }
2041 }
2042 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2043 break;
2044 }
2045 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2046 ha->host_no));
2047 }
2048
2049 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2050 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2051
2052 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2053 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2054 ha->host_no));
2055
2056 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2057
2058 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2059 ha->host_no));
2060 }
2061
2062 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2063
2064 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2065 ha->host_no));
2066
2067 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2068 &ha->dpc_flags))) {
2069
2070 qla2x00_loop_resync(ha);
2071
2072 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2073 }
2074
2075 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2076 ha->host_no));
2077 }
2078
2079 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2080
2081 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2082 ha->host_no));
2083
2084 qla2x00_rescan_fcports(ha);
2085
2086 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2087 "end.\n",
2088 ha->host_no));
2089 }
2090
2091 if (!ha->interrupts_on)
2092 ha->isp_ops.enable_intrs(ha);
2093
2094 ha->dpc_active = 0;
2095 } /* End of while(1) */
2096
2097 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2098
2099 /*
2100 * Make sure that nobody tries to wake us up again.
2101 */
2102 ha->dpc_wait = NULL;
2103 ha->dpc_active = 0;
2104
2105 complete_and_exit(&ha->dpc_exited, 0);
2106 }
2107
2108 /*
2109 * qla2x00_rst_aen
2110 * Processes asynchronous reset.
2111 *
2112 * Input:
2113 * ha = adapter block pointer.
2114 */
2115 static void
2116 qla2x00_rst_aen(scsi_qla_host_t *ha)
2117 {
2118 if (ha->flags.online && !ha->flags.reset_active &&
2119 !atomic_read(&ha->loop_down_timer) &&
2120 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2121 do {
2122 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2123
2124 /*
2125 * Issue marker command only when we are going to start
2126 * the I/O.
2127 */
2128 ha->marker_needed = 1;
2129 } while (!atomic_read(&ha->loop_down_timer) &&
2130 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2131 }
2132 }
2133
2134
2135 /*
2136 * This routine will allocate SP from the free queue
2137 * input:
2138 * scsi_qla_host_t *
2139 * output:
2140 * srb_t * or NULL
2141 */
2142 static srb_t *
2143 qla2x00_get_new_sp(scsi_qla_host_t *ha)
2144 {
2145 srb_t *sp;
2146
2147 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2148 if (sp)
2149 atomic_set(&sp->ref_count, 1);
2150 return (sp);
2151 }
2152
2153 static void
2154 qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2155 {
2156 struct scsi_cmnd *cmd = sp->cmd;
2157
2158 if (sp->flags & SRB_DMA_VALID) {
2159 if (cmd->use_sg) {
2160 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2161 cmd->use_sg, cmd->sc_data_direction);
2162 } else if (cmd->request_bufflen) {
2163 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2164 cmd->request_bufflen, cmd->sc_data_direction);
2165 }
2166 sp->flags &= ~SRB_DMA_VALID;
2167 }
2168 }
2169
2170 void
2171 qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2172 {
2173 struct scsi_cmnd *cmd = sp->cmd;
2174
2175 qla2x00_sp_free_dma(ha, sp);
2176
2177 CMD_SP(cmd) = NULL;
2178 mempool_free(sp, ha->srb_mempool);
2179
2180 cmd->scsi_done(cmd);
2181 }
2182
2183 /**************************************************************************
2184 * qla2x00_timer
2185 *
2186 * Description:
2187 * One second timer
2188 *
2189 * Context: Interrupt
2190 ***************************************************************************/
2191 static void
2192 qla2x00_timer(scsi_qla_host_t *ha)
2193 {
2194 unsigned long cpu_flags = 0;
2195 fc_port_t *fcport;
2196 int start_dpc = 0;
2197 int index;
2198 srb_t *sp;
2199 int t;
2200
2201 /*
2202 * Ports - Port down timer.
2203 *
2204 * Whenever, a port is in the LOST state we start decrementing its port
2205 * down timer every second until it reaches zero. Once it reaches zero
2206 * the port it marked DEAD.
2207 */
2208 t = 0;
2209 list_for_each_entry(fcport, &ha->fcports, list) {
2210 if (fcport->port_type != FCT_TARGET)
2211 continue;
2212
2213 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2214
2215 if (atomic_read(&fcport->port_down_timer) == 0)
2216 continue;
2217
2218 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2219 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2220
2221 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2222 "%d remainning\n",
2223 ha->host_no,
2224 t, atomic_read(&fcport->port_down_timer)));
2225 }
2226 t++;
2227 } /* End of for fcport */
2228
2229
2230 /* Loop down handler. */
2231 if (atomic_read(&ha->loop_down_timer) > 0 &&
2232 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2233
2234 if (atomic_read(&ha->loop_down_timer) ==
2235 ha->loop_down_abort_time) {
2236
2237 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2238 "queues before time expire\n",
2239 ha->host_no));
2240
2241 if (!IS_QLA2100(ha) && ha->link_down_timeout)
2242 atomic_set(&ha->loop_state, LOOP_DEAD);
2243
2244 /* Schedule an ISP abort to return any tape commands. */
2245 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2246 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2247 index++) {
2248 fc_port_t *sfcp;
2249
2250 sp = ha->outstanding_cmds[index];
2251 if (!sp)
2252 continue;
2253 sfcp = sp->fcport;
2254 if (!(sfcp->flags & FCF_TAPE_PRESENT))
2255 continue;
2256
2257 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2258 break;
2259 }
2260 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2261
2262 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2263 start_dpc++;
2264 }
2265
2266 /* if the loop has been down for 4 minutes, reinit adapter */
2267 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2268 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2269 "restarting queues.\n",
2270 ha->host_no));
2271
2272 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2273 start_dpc++;
2274
2275 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2276 DEBUG(printk("scsi(%ld): Loop down - "
2277 "aborting ISP.\n",
2278 ha->host_no));
2279 qla_printk(KERN_WARNING, ha,
2280 "Loop down - aborting ISP.\n");
2281
2282 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2283 }
2284 }
2285 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2286 ha->host_no,
2287 atomic_read(&ha->loop_down_timer)));
2288 }
2289
2290 /* Schedule the DPC routine if needed */
2291 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2292 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2293 start_dpc ||
2294 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
2295 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
2296 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2297 ha->dpc_wait && !ha->dpc_active) {
2298
2299 up(ha->dpc_wait);
2300 }
2301
2302 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2303 }
2304
2305 /* XXX(hch): crude hack to emulate a down_timeout() */
2306 int
2307 qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2308 {
2309 const unsigned int step = HZ/10;
2310
2311 do {
2312 if (!down_trylock(sema))
2313 return 0;
2314 set_current_state(TASK_INTERRUPTIBLE);
2315 if (schedule_timeout(step))
2316 break;
2317 } while ((timeout -= step) > 0);
2318
2319 return -ETIMEDOUT;
2320 }
2321
2322 /**
2323 * qla2x00_module_init - Module initialization.
2324 **/
2325 static int __init
2326 qla2x00_module_init(void)
2327 {
2328 /* Allocate cache for SRBs. */
2329 srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
2330 SLAB_HWCACHE_ALIGN, NULL, NULL);
2331 if (srb_cachep == NULL) {
2332 printk(KERN_ERR
2333 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2334 return -ENOMEM;
2335 }
2336
2337 /* Derive version string. */
2338 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2339 #if DEBUG_QLA2100
2340 strcat(qla2x00_version_str, "-debug");
2341 #endif
2342 qla2xxx_transport_template =
2343 fc_attach_transport(&qla2xxx_transport_functions);
2344 if (!qla2xxx_transport_template)
2345 return -ENODEV;
2346
2347 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2348 return 0;
2349 }
2350
2351 /**
2352 * qla2x00_module_exit - Module cleanup.
2353 **/
2354 static void __exit
2355 qla2x00_module_exit(void)
2356 {
2357 kmem_cache_destroy(srb_cachep);
2358 fc_release_transport(qla2xxx_transport_template);
2359 }
2360
2361 module_init(qla2x00_module_init);
2362 module_exit(qla2x00_module_exit);
2363
2364 MODULE_AUTHOR("QLogic Corporation");
2365 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2366 MODULE_LICENSE("GPL");
2367 MODULE_VERSION(QLA2XXX_VERSION);
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