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[PATCH] qla2xxx: add remote port codes...
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_os.c
CommitLineData
1da177e4
LT		 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 */
34char qla2x00_version_str[40];
35
36/*
37 * SRB allocation cache
38 */
39char srb_cachep_name[16];
40kmem_cache_t *srb_cachep;
41
42/*
43 * Stats for all adpaters.
44 */
45struct _qla2x00stats qla2x00_stats;
46
47/*
48 * Ioctl related information.
49 */
50int num_hosts;
51int apiHBAInstance;
52
53/*
54 * Module parameter information and variables
55 */
56int ql2xmaxqdepth;
57module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
58MODULE_PARM_DESC(ql2xmaxqdepth,
59 "Maximum queue depth to report for target devices.");
60
61int ql2xlogintimeout = 20;
62module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
63MODULE_PARM_DESC(ql2xlogintimeout,
64 "Login timeout value in seconds.");
65
8482e118 66int qlport_down_retry = 30;
1da177e4
LT		 67module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
68MODULE_PARM_DESC(qlport_down_retry,
69 "Maximum number of command retries to a port that returns"
70 "a PORT-DOWN status.");
71
72int ql2xretrycount = 20;
73module_param(ql2xretrycount, int, S_IRUGO|S_IWUSR);
74MODULE_PARM_DESC(ql2xretrycount,
75 "Maximum number of mid-layer retries allowed for a command. "
76 "Default value is 20, ");
77
78int displayConfig;
79module_param(displayConfig, int, S_IRUGO|S_IWUSR);
80MODULE_PARM_DESC(displayConfig,
81 "If 1 then display the configuration used in /etc/modprobe.conf.");
82
83int ql2xplogiabsentdevice;
84module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
85MODULE_PARM_DESC(ql2xplogiabsentdevice,
86 "Option to enable PLOGI to devices that are not present after "
87 "a Fabric scan. This is needed for several broken switches."
88 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
89
90int ql2xenablezio = 0;
91module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
92MODULE_PARM_DESC(ql2xenablezio,
93 "Option to enable ZIO:If 1 then enable it otherwise"
94 " use the default set in the NVRAM."
95 " Default is 0 : disabled");
96
97int ql2xintrdelaytimer = 10;
98module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
99MODULE_PARM_DESC(ql2xintrdelaytimer,
100 "ZIO: Waiting time for Firmware before it generates an "
101 "interrupt to the host to notify completion of request.");
102
103int ConfigRequired;
104module_param(ConfigRequired, int, S_IRUGO|S_IRUSR);
105MODULE_PARM_DESC(ConfigRequired,
106 "If 1, then only configured devices passed in through the"
107 "ql2xopts parameter will be presented to the OS");
108
109int Bind = BIND_BY_PORT_NAME;
110module_param(Bind, int, S_IRUGO|S_IRUSR);
111MODULE_PARM_DESC(Bind,
112 "Target persistent binding method: "
113 "0 by Portname (default); 1 by PortID; 2 by Nodename. ");
114
115int ql2xsuspendcount = SUSPEND_COUNT;
116module_param(ql2xsuspendcount, int, S_IRUGO|S_IWUSR);
117MODULE_PARM_DESC(ql2xsuspendcount,
118 "Number of 6-second suspend iterations to perform while a "
119 "target returns a <NOT READY> status. Default is 10 "
120 "iterations.");
121
122int ql2xdoinitscan = 1;
123module_param(ql2xdoinitscan, int, S_IRUGO|S_IWUSR);
124MODULE_PARM_DESC(ql2xdoinitscan,
125 "Signal mid-layer to perform scan after driver load: 0 -- no "
126 "signal sent to mid-layer.");
127
128int ql2xloginretrycount = 0;
129module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
130MODULE_PARM_DESC(ql2xloginretrycount,
131 "Specify an alternate value for the NVRAM login retry count.");
132
133/*
134 * Proc structures and functions
135 */
136struct info_str {
137 char *buffer;
138 int length;
139 off_t offset;
140 int pos;
141};
142
143static void copy_mem_info(struct info_str *, char *, int);
144static int copy_info(struct info_str *, char *, ...);
145
146static void qla2x00_free_device(scsi_qla_host_t *);
147
148static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
149
150/*
151 * SCSI host template entry points
152 */
153static int qla2xxx_slave_configure(struct scsi_device * device);
f4f051eb 154static int qla2xxx_slave_alloc(struct scsi_device *);
155static void qla2xxx_slave_destroy(struct scsi_device *);
1da177e4
LT		 156static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
157 void (*fn)(struct scsi_cmnd *));
158static int qla2xxx_eh_abort(struct scsi_cmnd *);
159static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
160static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
161static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
162static int qla2x00_loop_reset(scsi_qla_host_t *ha);
163static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
164
165static int qla2x00_proc_info(struct Scsi_Host *, char *, char **,
166 off_t, int, int);
167
168static struct scsi_host_template qla2x00_driver_template = {
169 .module = THIS_MODULE,
170 .name = "qla2xxx",
171 .proc_name = "qla2xxx",
172 .proc_info = qla2x00_proc_info,
173 .queuecommand = qla2x00_queuecommand,
174
175 .eh_abort_handler = qla2xxx_eh_abort,
176 .eh_device_reset_handler = qla2xxx_eh_device_reset,
177 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
178 .eh_host_reset_handler = qla2xxx_eh_host_reset,
179
180 .slave_configure = qla2xxx_slave_configure,
181
f4f051eb 182 .slave_alloc = qla2xxx_slave_alloc,
183 .slave_destroy = qla2xxx_slave_destroy,
1da177e4
LT		 184 .this_id = -1,
185 .cmd_per_lun = 3,
186 .use_clustering = ENABLE_CLUSTERING,
187 .sg_tablesize = SG_ALL,
188
189 /*
190 * The RISC allows for each command to transfer (2^32-1) bytes of data,
191 * which equates to 0x800000 sectors.
192 */
193 .max_sectors = 0xFFFF,
194};
195
196static struct scsi_transport_template *qla2xxx_transport_template = NULL;
197
198static void qla2x00_display_fc_names(scsi_qla_host_t *);
199
200/* TODO Convert to inlines
201 *
202 * Timer routines
203 */
204#define WATCH_INTERVAL 1 /* number of seconds */
205
206static void qla2x00_timer(scsi_qla_host_t *);
207
208static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
209 void *, unsigned long);
210static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
211static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
212
213static inline void
214qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
215{
216 init_timer(&ha->timer);
217 ha->timer.expires = jiffies + interval * HZ;
218 ha->timer.data = (unsigned long)ha;
219 ha->timer.function = (void (*)(unsigned long))func;
220 add_timer(&ha->timer);
221 ha->timer_active = 1;
222}
223
224static inline void
225qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
226{
227 mod_timer(&ha->timer, jiffies + interval * HZ);
228}
229
230static __inline__ void
231qla2x00_stop_timer(scsi_qla_host_t *ha)
232{
233 del_timer_sync(&ha->timer);
234 ha->timer_active = 0;
235}
236
1da177e4
LT		 237static int qla2x00_do_dpc(void *data);
238
239static void qla2x00_rst_aen(scsi_qla_host_t *);
240
241static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
242static void qla2x00_mem_free(scsi_qla_host_t *ha);
243static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
244static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
f4f051eb 245static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *);
246static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
247void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
1da177e4 248
1da177e4
LT		 249/* -------------------------------------------------------------------------- */
250
1da177e4
LT		 251static char *
252qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str)
253{
254 static char *pci_bus_modes[] = {
255 "33", "66", "100", "133",
256 };
257 uint16_t pci_bus;
258
259 strcpy(str, "PCI");
260 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
261 if (pci_bus) {
262 strcat(str, "-X (");
263 strcat(str, pci_bus_modes[pci_bus]);
264 } else {
265 pci_bus = (ha->pci_attr & BIT_8) >> 8;
266 strcat(str, " (");
267 strcat(str, pci_bus_modes[pci_bus]);
268 }
269 strcat(str, " MHz)");
270
271 return (str);
272}
273
274char *
275qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str)
276{
277 char un_str[10];
278
279 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
280 ha->fw_minor_version,
281 ha->fw_subminor_version);
282
283 if (ha->fw_attributes & BIT_9) {
284 strcat(str, "FLX");
285 return (str);
286 }
287
288 switch (ha->fw_attributes & 0xFF) {
289 case 0x7:
290 strcat(str, "EF");
291 break;
292 case 0x17:
293 strcat(str, "TP");
294 break;
295 case 0x37:
296 strcat(str, "IP");
297 break;
298 case 0x77:
299 strcat(str, "VI");
300 break;
301 default:
302 sprintf(un_str, "(%x)", ha->fw_attributes);
303 strcat(str, un_str);
304 break;
305 }
306 if (ha->fw_attributes & 0x100)
307 strcat(str, "X");
308
309 return (str);
310}
311
312/**************************************************************************
313* qla2x00_queuecommand
314*
315* Description:
316* Queue a command to the controller.
317*
318* Input:
319* cmd - pointer to Scsi cmd structure
320* fn - pointer to Scsi done function
321*
322* Returns:
323* 0 - Always
324*
325* Note:
326* The mid-level driver tries to ensures that queuecommand never gets invoked
327* concurrently with itself or the interrupt handler (although the
328* interrupt handler may call this routine as part of request-completion
329* handling).
330**************************************************************************/
331static int
f4f051eb 332qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
1da177e4 333{
f4f051eb 334 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
335 os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata;
336 fc_port_t *fcport = tq->fcport;
337 os_lun_t *lq;
338 srb_t *sp;
339 int rval;
1da177e4 340
f4f051eb 341 lq = GET_LU_Q(ha, cmd->device->id, cmd->device->lun);
342 if (!fcport || !lq) {
343 cmd->result = DID_NO_CONNECT << 16;
344 goto qc_fail_command;
345 }
1da177e4 346
f4f051eb 347 if (atomic_read(&fcport->state) != FCS_ONLINE) {
348 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
349 atomic_read(&ha->loop_state) == LOOP_DEAD) {
350 cmd->result = DID_NO_CONNECT << 16;
351 goto qc_fail_command;
352 }
353 goto qc_host_busy;
354 }
1da177e4
LT		 355
356 spin_unlock_irq(ha->host->host_lock);
357
f4f051eb 358 /* Allocate a command packet from the "sp" pool. */
1da177e4 359 if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
f4f051eb 360 goto qc_host_busy_lock;
1da177e4
LT		 361 }
362
f4f051eb 363 sp->ha = ha;
1da177e4 364 sp->cmd = cmd;
1da177e4 365 sp->tgt_queue = tq;
1da177e4 366
f4f051eb 367 sp->lun_queue = lq;
368 lq->io_cnt++;
369 sp->fclun = lq->fclun;
1da177e4 370
f4f051eb 371 sp->flags = 0;
372 sp->err_id = 0;
1da177e4 373
f4f051eb 374 CMD_SP(cmd) = (void *)sp;
375 cmd->scsi_done = done;
1da177e4 376
f4f051eb 377 rval = qla2x00_start_scsi(sp);
378 if (rval != QLA_SUCCESS)
379 goto qc_host_busy_free_sp;
1da177e4 380
f4f051eb 381 /* Manage unprocessed RIO/ZIO commands in response queue. */
382 if (ha->flags.online && ha->flags.process_response_queue &&
383 ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
384 unsigned long flags;
1da177e4 385
f4f051eb 386 spin_lock_irqsave(&ha->hardware_lock, flags);
387 qla2x00_process_response_queue(ha);
388 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 389 }
390
f4f051eb 391 spin_lock_irq(ha->host->host_lock);
1da177e4 392
f4f051eb 393 return 0;
1da177e4 394
f4f051eb 395qc_host_busy_free_sp:
396 qla2x00_sp_free_dma(ha, sp);
397 CMD_SP(cmd) = NULL;
398 mempool_free(sp, ha->srb_mempool);
1da177e4 399
f4f051eb 400qc_host_busy_lock:
401 spin_lock_irq(ha->host->host_lock);
1da177e4 402
f4f051eb 403qc_host_busy:
404 return SCSI_MLQUEUE_HOST_BUSY;
1da177e4 405
f4f051eb 406qc_fail_command:
407 done(cmd);
1da177e4 408
f4f051eb 409 return 0;
1da177e4
LT		 410}
411
412/*
413 * qla2x00_eh_wait_on_command
414 * Waits for the command to be returned by the Firmware for some
415 * max time.
416 *
417 * Input:
418 * ha = actual ha whose done queue will contain the command
419 * returned by firmware.
420 * cmd = Scsi Command to wait on.
421 * flag = Abort/Reset(Bus or Device Reset)
422 *
423 * Return:
424 * Not Found : 0
425 * Found : 1
426 */
427static int
428qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
429{
430#define ABORT_POLLING_PERIOD HZ
f4f051eb 431#define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
432 unsigned long wait_iter = ABORT_WAIT_ITER;
433 int ret = QLA_SUCCESS;
1da177e4 434
f4f051eb 435 while (CMD_SP(cmd)) {
1da177e4
LT		 436 set_current_state(TASK_UNINTERRUPTIBLE);
437 schedule_timeout(ABORT_POLLING_PERIOD);
438
f4f051eb 439 if (--wait_iter)
440 break;
441 }
442 if (CMD_SP(cmd))
443 ret = QLA_FUNCTION_FAILED;
1da177e4 444
f4f051eb 445 return ret;
1da177e4
LT		 446}
447
448/*
449 * qla2x00_wait_for_hba_online
450 * Wait till the HBA is online after going through
451 * <= MAX_RETRIES_OF_ISP_ABORT or
452 * finally HBA is disabled ie marked offline
453 *
454 * Input:
455 * ha - pointer to host adapter structure
456 *
457 * Note:
458 * Does context switching-Release SPIN_LOCK
459 * (if any) before calling this routine.
460 *
461 * Return:
462 * Success (Adapter is online) : 0
463 * Failed (Adapter is offline/disabled) : 1
464 */
465static int
466qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
467{
468 int return_status;
469 unsigned long wait_online;
470
471 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
472 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
473 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
474 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
475 ha->dpc_active) && time_before(jiffies, wait_online)) {
476
477 msleep(1000);
478 }
479 if (ha->flags.online)
480 return_status = QLA_SUCCESS;
481 else
482 return_status = QLA_FUNCTION_FAILED;
483
484 DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
485
486 return (return_status);
487}
488
489/*
490 * qla2x00_wait_for_loop_ready
491 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
492 * to be in LOOP_READY state.
493 * Input:
494 * ha - pointer to host adapter structure
495 *
496 * Note:
497 * Does context switching-Release SPIN_LOCK
498 * (if any) before calling this routine.
499 *
500 *
501 * Return:
502 * Success (LOOP_READY) : 0
503 * Failed (LOOP_NOT_READY) : 1
504 */
505static inline int
506qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
507{
508 int return_status = QLA_SUCCESS;
509 unsigned long loop_timeout ;
510
511 /* wait for 5 min at the max for loop to be ready */
512 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
513
514 while ((!atomic_read(&ha->loop_down_timer) &&
515 atomic_read(&ha->loop_state) == LOOP_DOWN) ||
516 test_bit(CFG_ACTIVE, &ha->cfg_flags) ||
517 atomic_read(&ha->loop_state) != LOOP_READY) {
518 msleep(1000);
519 if (time_after_eq(jiffies, loop_timeout)) {
520 return_status = QLA_FUNCTION_FAILED;
521 break;
522 }
523 }
524 return (return_status);
525}
526
527/**************************************************************************
528* qla2xxx_eh_abort
529*
530* Description:
531* The abort function will abort the specified command.
532*
533* Input:
534* cmd = Linux SCSI command packet to be aborted.
535*
536* Returns:
537* Either SUCCESS or FAILED.
538*
539* Note:
540**************************************************************************/
541int
542qla2xxx_eh_abort(struct scsi_cmnd *cmd)
543{
f4f051eb 544 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
545 srb_t *sp;
546 int ret, i;
547 unsigned int id, lun;
548 unsigned long serial;
1da177e4 549
f4f051eb 550 if (!CMD_SP(cmd))
551 return FAILED;
1da177e4 552
f4f051eb 553 ret = FAILED;
1da177e4 554
f4f051eb 555 id = cmd->device->id;
556 lun = cmd->device->lun;
557 serial = cmd->serial_number;
1da177e4 558
f4f051eb 559 /* Check active list for command command. */
560 spin_unlock_irq(ha->host->host_lock);
561 spin_lock(&ha->hardware_lock);
562 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
563 sp = ha->outstanding_cmds[i];
1da177e4 564
f4f051eb 565 if (sp == NULL)
566 continue;
1da177e4 567
f4f051eb 568 if (sp->cmd != cmd)
569 continue;
1da177e4 570
f4f051eb 571 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
572 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
573 sp->state));
574 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
1da177e4 575
f4f051eb 576 spin_unlock(&ha->hardware_lock);
577 if (qla2x00_abort_command(ha, sp)) {
578 DEBUG2(printk("%s(%ld): abort_command "
579 "mbx failed.\n", __func__, ha->host_no));
580 } else {
581 DEBUG3(printk("%s(%ld): abort_command "
582 "mbx success.\n", __func__, ha->host_no));
583 ret = SUCCESS;
584 }
585 spin_lock(&ha->hardware_lock);
1da177e4 586
f4f051eb 587 break;
588 }
1da177e4 589
f4f051eb 590 /* Wait for the command to be returned. */
591 if (ret == SUCCESS) {
592 spin_unlock(&ha->hardware_lock);
593 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
594 qla_printk(KERN_ERR, ha,
595 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
596 "%x.\n", ha->host_no, id, lun, serial, ret);
597 }
598 spin_lock(&ha->hardware_lock);
1da177e4
LT		 599 }
600 spin_lock_irq(ha->host->host_lock);
601
f4f051eb 602 qla_printk(KERN_INFO, ha,
603 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
604 id, lun, serial, ret);
1da177e4 605
f4f051eb 606 return ret;
607}
1da177e4 608
f4f051eb 609/**************************************************************************
610* qla2x00_eh_wait_for_pending_target_commands
611*
612* Description:
613* Waits for all the commands to come back from the specified target.
614*
615* Input:
616* ha - pointer to scsi_qla_host structure.
617* t - target
618* Returns:
619* Either SUCCESS or FAILED.
620*
621* Note:
622**************************************************************************/
623static int
624qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
625{
626 int cnt;
627 int status;
628 srb_t *sp;
629 struct scsi_cmnd *cmd;
1da177e4 630
f4f051eb 631 status = 0;
1da177e4
LT		 632
633 /*
f4f051eb 634 * Waiting for all commands for the designated target in the active
635 * array
1da177e4
LT		 636 */
637 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
638 spin_lock(&ha->hardware_lock);
639 sp = ha->outstanding_cmds[cnt];
640 if (sp) {
641 cmd = sp->cmd;
642 spin_unlock(&ha->hardware_lock);
643 if (cmd->device->id == t) {
644 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
645 status = 1;
646 break;
647 }
648 }
f4f051eb 649 } else {
1da177e4
LT		 650 spin_unlock(&ha->hardware_lock);
651 }
652 }
653 return (status);
654}
655
656
657/**************************************************************************
658* qla2xxx_eh_device_reset
659*
660* Description:
661* The device reset function will reset the target and abort any
662* executing commands.
663*
664* NOTE: The use of SP is undefined within this context. Do *NOT*
665* attempt to use this value, even if you determine it is
666* non-null.
667*
668* Input:
669* cmd = Linux SCSI command packet of the command that cause the
670* bus device reset.
671*
672* Returns:
673* SUCCESS/FAILURE (defined as macro in scsi.h).
674*
675**************************************************************************/
676int
677qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
678{
f4f051eb 679 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
680 os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata;
681 fc_port_t *fcport = tq->fcport;
682 os_lun_t *lq;
683 srb_t *sp;
684 int ret;
685 unsigned int id, lun;
686 unsigned long serial;
1da177e4 687
f4f051eb 688 ret = FAILED;
1da177e4 689
f4f051eb 690 id = cmd->device->id;
691 lun = cmd->device->lun;
692 serial = cmd->serial_number;
1da177e4 693
f4f051eb 694 sp = (srb_t *) CMD_SP(cmd);
695 lq = GET_LU_Q(ha, id, lun);
696 if (!sp || !fcport || !lq)
697 return ret;
1da177e4
LT		 698
699 qla_printk(KERN_INFO, ha,
f4f051eb 700 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4
LT		 701
702 spin_unlock_irq(ha->host->host_lock);
703
704 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
1da177e4
LT		 705 spin_lock_irq(ha->host->host_lock);
706 goto eh_dev_reset_done;
707 }
708
709 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051eb 710 if (qla2x00_device_reset(ha, fcport) == 0)
711 ret = SUCCESS;
1da177e4
LT		 712
713#if defined(LOGOUT_AFTER_DEVICE_RESET)
f4f051eb 714 if (ret == SUCCESS) {
715 if (fcport->flags & FC_FABRIC_DEVICE) {
716 qla2x00_fabric_logout(ha, fcport->loop_id);
717 qla2x00_mark_device_lost(ha, fcport);
1da177e4
LT		 718 }
719 }
720#endif
721 } else {
722 DEBUG2(printk(KERN_INFO
723 "%s failed: loop not ready\n",__func__);)
724 }
725
f4f051eb 726 if (ret == FAILED) {
1da177e4
LT		 727 DEBUG3(printk("%s(%ld): device reset failed\n",
728 __func__, ha->host_no));
729 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
730 __func__);
731
732 goto eh_dev_reset_done;
733 }
734
735 /*
736 * If we are coming down the EH path, wait for all commands to
737 * complete for the device.
738 */
739 if (cmd->device->host->eh_active) {
f4f051eb 740 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
741 ret = FAILED;
1da177e4 742
f4f051eb 743 if (ret == FAILED) {
1da177e4
LT		 744 DEBUG3(printk("%s(%ld): failed while waiting for "
745 "commands\n", __func__, ha->host_no));
746 qla_printk(KERN_INFO, ha,
747 "%s: failed while waiting for commands\n",
748 __func__);
749
750 goto eh_dev_reset_done;
751 }
752 }
753
754 qla_printk(KERN_INFO, ha,
f4f051eb 755 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
1da177e4
LT		 756
757eh_dev_reset_done:
f4f051eb 758 spin_lock_irq(ha->host->host_lock);
1da177e4 759
f4f051eb 760 return ret;
1da177e4
LT		 761}
762
763/**************************************************************************
764* qla2x00_eh_wait_for_pending_commands
765*
766* Description:
767* Waits for all the commands to come back from the specified host.
768*
769* Input:
770* ha - pointer to scsi_qla_host structure.
771*
772* Returns:
773* 1 : SUCCESS
774* 0 : FAILED
775*
776* Note:
777**************************************************************************/
778static int
779qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
780{
781 int cnt;
782 int status;
783 srb_t *sp;
784 struct scsi_cmnd *cmd;
785
786 status = 1;
787
788 /*
789 * Waiting for all commands for the designated target in the active
790 * array
791 */
792 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
793 spin_lock(&ha->hardware_lock);
794 sp = ha->outstanding_cmds[cnt];
795 if (sp) {
796 cmd = sp->cmd;
797 spin_unlock(&ha->hardware_lock);
798 status = qla2x00_eh_wait_on_command(ha, cmd);
799 if (status == 0)
800 break;
801 }
802 else {
803 spin_unlock(&ha->hardware_lock);
804 }
805 }
806 return (status);
807}
808
809
810/**************************************************************************
811* qla2xxx_eh_bus_reset
812*
813* Description:
814* The bus reset function will reset the bus and abort any executing
815* commands.
816*
817* Input:
818* cmd = Linux SCSI command packet of the command that cause the
819* bus reset.
820*
821* Returns:
822* SUCCESS/FAILURE (defined as macro in scsi.h).
823*
824**************************************************************************/
825int
826qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
827{
f4f051eb 828 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
829 os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata;
830 fc_port_t *fcport = tq->fcport;
831 os_lun_t *lq;
1da177e4 832 srb_t *sp;
f4f051eb 833 int ret;
834 unsigned int id, lun;
835 unsigned long serial;
836
837 ret = FAILED;
838
839 id = cmd->device->id;
840 lun = cmd->device->lun;
841 serial = cmd->serial_number;
1da177e4 842
1da177e4 843 sp = (srb_t *) CMD_SP(cmd);
f4f051eb 844 lq = GET_LU_Q(ha, id, lun);
845 if (!sp || !fcport || !lq)
846 return ret;
1da177e4
LT		 847
848 qla_printk(KERN_INFO, ha,
f4f051eb 849 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4
LT		 850
851 spin_unlock_irq(ha->host->host_lock);
852
853 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
854 DEBUG2(printk("%s failed:board disabled\n",__func__));
f4f051eb 855 goto eh_bus_reset_done;
1da177e4
LT		 856 }
857
858 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051eb 859 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
860 ret = SUCCESS;
1da177e4 861 }
f4f051eb 862 if (ret == FAILED)
863 goto eh_bus_reset_done;
1da177e4
LT		 864
865 /* Waiting for our command in done_queue to be returned to OS.*/
866 if (cmd->device->host->eh_active)
867 if (!qla2x00_eh_wait_for_pending_commands(ha))
f4f051eb 868 ret = FAILED;
1da177e4 869
f4f051eb 870eh_bus_reset_done:
1da177e4 871 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
f4f051eb 872 (ret == FAILED) ? "failed" : "succeded");
1da177e4 873
f4f051eb 874 spin_lock_irq(ha->host->host_lock);
875
876 return ret;
1da177e4
LT		 877}
878
879/**************************************************************************
880* qla2xxx_eh_host_reset
881*
882* Description:
883* The reset function will reset the Adapter.
884*
885* Input:
886* cmd = Linux SCSI command packet of the command that cause the
887* adapter reset.
888*
889* Returns:
890* Either SUCCESS or FAILED.
891*
892* Note:
893**************************************************************************/
894int
895qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
896{
f4f051eb 897 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
898 os_tgt_t *tq = (os_tgt_t *) cmd->device->hostdata;
899 fc_port_t *fcport = tq->fcport;
900 os_lun_t *lq;
901 srb_t *sp;
902 int ret;
903 unsigned int id, lun;
904 unsigned long serial;
1da177e4 905
f4f051eb 906 ret = FAILED;
907
908 id = cmd->device->id;
909 lun = cmd->device->lun;
910 serial = cmd->serial_number;
911
912 sp = (srb_t *) CMD_SP(cmd);
913 lq = GET_LU_Q(ha, id, lun);
914 if (!sp || !fcport || !lq)
915 return ret;
1da177e4 916
1da177e4 917 qla_printk(KERN_INFO, ha,
f4f051eb 918 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4
LT		 919
920 spin_unlock_irq(ha->host->host_lock);
921
922 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051eb 923 goto eh_host_reset_lock;
1da177e4
LT		 924
925 /*
926 * Fixme-may be dpc thread is active and processing
927 * loop_resync,so wait a while for it to
928 * be completed and then issue big hammer.Otherwise
929 * it may cause I/O failure as big hammer marks the
930 * devices as lost kicking of the port_down_timer
931 * while dpc is stuck for the mailbox to complete.
932 */
1da177e4
LT		 933 qla2x00_wait_for_loop_ready(ha);
934 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
935 if (qla2x00_abort_isp(ha)) {
936 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
937 /* failed. schedule dpc to try */
938 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
939
940 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051eb 941 goto eh_host_reset_lock;
1da177e4 942 }
1da177e4
LT		 943 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
944
1da177e4 945 /* Waiting for our command in done_queue to be returned to OS.*/
f4f051eb 946 if (qla2x00_eh_wait_for_pending_commands(ha))
947 ret = SUCCESS;
1da177e4 948
f4f051eb 949eh_host_reset_lock:
1da177e4
LT		 950 spin_lock_irq(ha->host->host_lock);
951
f4f051eb 952 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
953 (ret == FAILED) ? "failed" : "succeded");
1da177e4 954
f4f051eb 955 return ret;
956}
1da177e4
LT		 957
958/*
959* qla2x00_loop_reset
960* Issue loop reset.
961*
962* Input:
963* ha = adapter block pointer.
964*
965* Returns:
966* 0 = success
967*/
968static int
969qla2x00_loop_reset(scsi_qla_host_t *ha)
970{
971 int status = QLA_SUCCESS;
972 uint16_t t;
973 os_tgt_t *tq;
974
975 if (ha->flags.enable_lip_reset) {
976 status = qla2x00_lip_reset(ha);
977 }
978
979 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
980 for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
981 if ((tq = TGT_Q(ha, t)) == NULL)
982 continue;
983
984 if (tq->fcport == NULL)
985 continue;
986
987 status = qla2x00_target_reset(ha, 0, t);
988 if (status != QLA_SUCCESS) {
989 break;
990 }
991 }
992 }
993
994 if (status == QLA_SUCCESS &&
995 ((!ha->flags.enable_target_reset &&
996 !ha->flags.enable_lip_reset) ||
997 ha->flags.enable_lip_full_login)) {
998
999 status = qla2x00_full_login_lip(ha);
1000 }
1001
1002 /* Issue marker command only when we are going to start the I/O */
1003 ha->marker_needed = 1;
1004
1005 if (status) {
1006 /* Empty */
1007 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1008 __func__,
1009 ha->host_no);)
1010 } else {
1011 /* Empty */
1012 DEBUG3(printk("%s(%ld): exiting normally.\n",
1013 __func__,
1014 ha->host_no);)
1015 }
1016
1017 return(status);
1018}
1019
1020/*
1021 * qla2x00_device_reset
1022 * Issue bus device reset message to the target.
1023 *
1024 * Input:
1025 * ha = adapter block pointer.
1026 * t = SCSI ID.
1027 * TARGET_QUEUE_LOCK must be released.
1028 * ADAPTER_STATE_LOCK must be released.
1029 *
1030 * Context:
1031 * Kernel context.
1032 */
1033static int
1034qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1035{
1036 /* Abort Target command will clear Reservation */
1037 return qla2x00_abort_target(reset_fcport);
1038}
1039
f4f051eb 1040static int
1041qla2xxx_slave_alloc(struct scsi_device *sdev)
1da177e4
LT		 1042{
1043 scsi_qla_host_t *ha = to_qla_host(sdev->host);
f4f051eb 1044 os_tgt_t *tq;
1da177e4 1045
f4f051eb 1046 tq = (os_tgt_t *) TGT_Q(ha, sdev->id);
1047 if (!tq)
1048 return -ENXIO;
1049 if (!tq->fcport)
1050 return -ENXIO;
1da177e4 1051
f4f051eb 1052 sdev->hostdata = tq;
1da177e4 1053
f4f051eb 1054 return 0;
1055}
1da177e4 1056
f4f051eb 1057static int
1058qla2xxx_slave_configure(struct scsi_device *sdev)
1059{
8482e118 1060 scsi_qla_host_t *ha = to_qla_host(sdev->host);
1061 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1062
f4f051eb 1063 if (sdev->tagged_supported)
1064 scsi_activate_tcq(sdev, 32);
1065 else
1066 scsi_deactivate_tcq(sdev, 32);
1da177e4 1067
8482e118 1068 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1069
f4f051eb 1070 return 0;
1071}
1da177e4 1072
f4f051eb 1073static void
1074qla2xxx_slave_destroy(struct scsi_device *sdev)
1075{
1076 sdev->hostdata = NULL;
1da177e4
LT		 1077}
1078
1079/**
1080 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1081 * @ha: HA context
1082 *
1083 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1084 * supported addressing method.
1085 */
1086static void
1087qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1088{
1089 /* Assume 32bit DMA address */
1090 ha->flags.enable_64bit_addressing = 0;
1091 ha->calc_request_entries = qla2x00_calc_iocbs_32;
1092 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32;
1093
1094 /*
1095 * Given the two variants pci_set_dma_mask(), allow the compiler to
1096 * assist in setting the proper dma mask.
1097 */
1098 if (sizeof(dma_addr_t) > 4) {
1099 if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
1100 ha->flags.enable_64bit_addressing = 1;
1101 ha->calc_request_entries = qla2x00_calc_iocbs_64;
1102 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64;
1103
1104 if (pci_set_consistent_dma_mask(ha->pdev,
1105 DMA_64BIT_MASK)) {
1106 qla_printk(KERN_DEBUG, ha,
1107 "Failed to set 64 bit PCI consistent mask; "
1108 "using 32 bit.\n");
1109 pci_set_consistent_dma_mask(ha->pdev,
1110 DMA_32BIT_MASK);
1111 }
1112 } else {
1113 qla_printk(KERN_DEBUG, ha,
1114 "Failed to set 64 bit PCI DMA mask, falling back "
1115 "to 32 bit MASK.\n");
1116 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1117 }
1118 } else {
1119 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1120 }
1121}
1122
1123static int
1124qla2x00_iospace_config(scsi_qla_host_t *ha)
1125{
1126 unsigned long pio, pio_len, pio_flags;
1127 unsigned long mmio, mmio_len, mmio_flags;
1128
1129 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1130 pio = pci_resource_start(ha->pdev, 0);
1131 pio_len = pci_resource_len(ha->pdev, 0);
1132 pio_flags = pci_resource_flags(ha->pdev, 0);
1133 if (pio_flags & IORESOURCE_IO) {
1134 if (pio_len < MIN_IOBASE_LEN) {
1135 qla_printk(KERN_WARNING, ha,
1136 "Invalid PCI I/O region size (%s)...\n",
1137 pci_name(ha->pdev));
1138 pio = 0;
1139 }
1140 } else {
1141 qla_printk(KERN_WARNING, ha,
1142 "region #0 not a PIO resource (%s)...\n",
1143 pci_name(ha->pdev));
1144 pio = 0;
1145 }
1146
1147 /* Use MMIO operations for all accesses. */
1148 mmio = pci_resource_start(ha->pdev, 1);
1149 mmio_len = pci_resource_len(ha->pdev, 1);
1150 mmio_flags = pci_resource_flags(ha->pdev, 1);
1151
1152 if (!(mmio_flags & IORESOURCE_MEM)) {
1153 qla_printk(KERN_ERR, ha,
1154 "region #0 not an MMIO resource (%s), aborting\n",
1155 pci_name(ha->pdev));
1156 goto iospace_error_exit;
1157 }
1158 if (mmio_len < MIN_IOBASE_LEN) {
1159 qla_printk(KERN_ERR, ha,
1160 "Invalid PCI mem region size (%s), aborting\n",
1161 pci_name(ha->pdev));
1162 goto iospace_error_exit;
1163 }
1164
1165 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1166 qla_printk(KERN_WARNING, ha,
1167 "Failed to reserve PIO/MMIO regions (%s)\n",
1168 pci_name(ha->pdev));
1169
1170 goto iospace_error_exit;
1171 }
1172
1173 ha->pio_address = pio;
1174 ha->pio_length = pio_len;
1175 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1176 if (!ha->iobase) {
1177 qla_printk(KERN_ERR, ha,
1178 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1179
1180 goto iospace_error_exit;
1181 }
1182
1183 return (0);
1184
1185iospace_error_exit:
1186 return (-ENOMEM);
1187}
1188
1189/*
1190 * PCI driver interface
1191 */
1192int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1193{
1194 int ret;
1195 device_reg_t __iomem *reg;
1196 struct Scsi_Host *host;
1197 scsi_qla_host_t *ha;
1198 unsigned long flags = 0;
1199 unsigned long wait_switch = 0;
1200 char pci_info[20];
1201 char fw_str[30];
8482e118 1202 fc_port_t *fcport;
1da177e4
LT		 1203
1204 if (pci_enable_device(pdev))
1205 return -1;
1206
1207 host = scsi_host_alloc(&qla2x00_driver_template,
1208 sizeof(scsi_qla_host_t));
1209 if (host == NULL) {
1210 printk(KERN_WARNING
1211 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1212 goto probe_disable_device;
1213 }
1214
1215 /* Clear our data area */
1216 ha = (scsi_qla_host_t *)host->hostdata;
1217 memset(ha, 0, sizeof(scsi_qla_host_t));
1218
1219 ha->pdev = pdev;
1220 ha->host = host;
1221 ha->host_no = host->host_no;
1222 ha->brd_info = brd_info;
1223 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1224
1225 /* Configure PCI I/O space */
1226 ret = qla2x00_iospace_config(ha);
1227 if (ret != 0) {
8482e118 1228 goto probe_alloc_failed;
1da177e4
LT		 1229 }
1230
1231 /* Sanitize the information from PCI BIOS. */
1232 host->irq = pdev->irq;
1233
1234 qla_printk(KERN_INFO, ha,
1235 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1236 host->irq, ha->iobase);
1237
1238 spin_lock_init(&ha->hardware_lock);
1239
1240 /* 4.23 Initialize /proc/scsi/qla2x00 counters */
1241 ha->actthreads = 0;
1242 ha->qthreads = 0;
1243 ha->total_isr_cnt = 0;
1244 ha->total_isp_aborts = 0;
1245 ha->total_lip_cnt = 0;
1246 ha->total_dev_errs = 0;
1247 ha->total_ios = 0;
1248 ha->total_bytes = 0;
1249
1250 ha->prev_topology = 0;
1251 ha->ports = MAX_BUSES;
1252
1253 if (IS_QLA2100(ha)) {
1254 ha->max_targets = MAX_TARGETS_2100;
1255 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1256 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1257 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1258 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1259 host->sg_tablesize = 32;
1260 } else if (IS_QLA2200(ha)) {
1261 ha->max_targets = MAX_TARGETS_2200;
1262 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1263 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1264 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1265 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1266 } else /*if (IS_QLA2300(ha))*/ {
1267 ha->max_targets = MAX_TARGETS_2200;
1268 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1269 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1270 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1271 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1272 }
1273 host->can_queue = ha->request_q_length + 128;
1274
1275 /* load the F/W, read paramaters, and init the H/W */
1276 ha->instance = num_hosts;
1277
1278 init_MUTEX(&ha->mbx_cmd_sem);
1279 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1280
1281 INIT_LIST_HEAD(&ha->list);
1282 INIT_LIST_HEAD(&ha->fcports);
1283 INIT_LIST_HEAD(&ha->rscn_fcports);
1da177e4
LT		 1284
1285 /*
1286 * These locks are used to prevent more than one CPU
1287 * from modifying the queue at the same time. The
1288 * higher level "host_lock" will reduce most
1289 * contention for these locks.
1290 */
1291 spin_lock_init(&ha->mbx_reg_lock);
1da177e4
LT		 1292
1293 ha->dpc_pid = -1;
1294 init_completion(&ha->dpc_inited);
1295 init_completion(&ha->dpc_exited);
1296
1297 qla2x00_config_dma_addressing(ha);
1298 if (qla2x00_mem_alloc(ha)) {
1299 qla_printk(KERN_WARNING, ha,
1300 "[ERROR] Failed to allocate memory for adapter\n");
1301
8482e118 1302 goto probe_alloc_failed;
1da177e4
LT		 1303 }
1304
8482e118 1305 pci_set_drvdata(pdev, ha);
1306 host->this_id = 255;
1307 host->cmd_per_lun = 3;
1308 host->unique_id = ha->instance;
1309 host->max_cmd_len = MAX_CMDSZ;
1310 host->max_channel = ha->ports - 1;
1311 host->max_id = ha->max_targets;
1312 host->max_lun = ha->max_luns;
1313 host->transportt = qla2xxx_transport_template;
1314 if (scsi_add_host(host, &pdev->dev))
1315 goto probe_alloc_failed;
1316
1317 qla2x00_alloc_sysfs_attr(ha);
1318
1da177e4
LT		 1319 if (qla2x00_initialize_adapter(ha) &&
1320 !(ha->device_flags & DFLG_NO_CABLE)) {
1321
1322 qla_printk(KERN_WARNING, ha,
1323 "Failed to initialize adapter\n");
1324
1325 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1326 "Adapter flags %x.\n",
1327 ha->host_no, ha->device_flags));
1328
1329 goto probe_failed;
1330 }
1331
8482e118 1332 qla2x00_init_host_attr(ha);
1da177e4
LT		 1333 /*
1334 * Startup the kernel thread for this host adapter
1335 */
1336 ha->dpc_should_die = 0;
1337 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1338 if (ha->dpc_pid < 0) {
1339 qla_printk(KERN_WARNING, ha,
1340 "Unable to start DPC thread!\n");
1341
1342 goto probe_failed;
1343 }
1344 wait_for_completion(&ha->dpc_inited);
1345
1da177e4
LT		 1346 if (IS_QLA2100(ha) || IS_QLA2200(ha))
1347 ret = request_irq(host->irq, qla2100_intr_handler,
1348 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1349 else
1350 ret = request_irq(host->irq, qla2300_intr_handler,
1351 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1352 if (ret != 0) {
1353 qla_printk(KERN_WARNING, ha,
1354 "Failed to reserve interrupt %d already in use.\n",
1355 host->irq);
1356 goto probe_failed;
1357 }
1358
1359 /* Initialized the timer */
1360 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1361
1362 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1363 ha->host_no, ha));
1364
1365 reg = ha->iobase;
1366
1367 /* Disable ISP interrupts. */
1368 qla2x00_disable_intrs(ha);
1369
1370 /* Ensure mailbox registers are free. */
1371 spin_lock_irqsave(&ha->hardware_lock, flags);
1372 WRT_REG_WORD(&reg->semaphore, 0);
1373 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
1374 WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);
1375
1376 /* Enable proper parity */
1377 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1378 if (IS_QLA2300(ha))
1379 /* SRAM parity */
1380 WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x1));
1381 else
1382 /* SRAM, Instruction RAM and GP RAM parity */
1383 WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x7));
1384 }
1385 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1386
1387 /* Enable chip interrupts. */
1388 qla2x00_enable_intrs(ha);
1389
1390 /* v2.19.5b6 */
1391 /*
1392 * Wait around max loop_reset_delay secs for the devices to come
1393 * on-line. We don't want Linux scanning before we are ready.
1394 *
1395 */
1396 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1397 time_before(jiffies,wait_switch) &&
1398 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1399 && (ha->device_flags & SWITCH_FOUND) ;) {
1400
1401 qla2x00_check_fabric_devices(ha);
1402
1403 msleep(10);
1404 }
1405
1da177e4
LT		 1406 ha->flags.init_done = 1;
1407 num_hosts++;
1408
1409 /* List the target we have found */
1410 if (displayConfig) {
1411 qla2x00_display_fc_names(ha);
1412 }
1413
1da177e4
LT		 1414 qla_printk(KERN_INFO, ha, "\n"
1415 " QLogic Fibre Channel HBA Driver: %s\n"
1416 " QLogic %s - %s\n"
1417 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1418 ha->model_number, ha->model_desc ? ha->model_desc: "",
1419 ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info),
1420 pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1421 ha->host_no, qla2x00_get_fw_version_str(ha, fw_str));
1422
8482e118 1423 /* Go with fc_rport registration. */
1424 list_for_each_entry(fcport, &ha->fcports, list)
1425 qla2x00_reg_remote_port(ha, fcport);
1da177e4
LT		 1426
1427 return 0;
1428
1429probe_failed:
8482e118 1430 scsi_remove_host(host);
1431
1432probe_alloc_failed:
1da177e4
LT		 1433 qla2x00_free_device(ha);
1434
1435 scsi_host_put(host);
1436
1437probe_disable_device:
1438 pci_disable_device(pdev);
1439
1440 return -1;
1441}
1442EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1443
1444void qla2x00_remove_one(struct pci_dev *pdev)
1445{
1446 scsi_qla_host_t *ha;
1447
1448 ha = pci_get_drvdata(pdev);
1449
8482e118 1450 qla2x00_free_sysfs_attr(ha);
1da177e4
LT		 1451
1452 scsi_remove_host(ha->host);
1453
1454 qla2x00_free_device(ha);
1455
1456 scsi_host_put(ha->host);
1457
1458 pci_set_drvdata(pdev, NULL);
1459}
1460EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1461
1462static void
1463qla2x00_free_device(scsi_qla_host_t *ha)
1464{
1465 int ret;
1466
1467 /* Abort any outstanding IO descriptors. */
1468 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1469 qla2x00_cancel_io_descriptors(ha);
1470
1471 /* turn-off interrupts on the card */
1472 if (ha->interrupts_on)
1473 qla2x00_disable_intrs(ha);
1474
1475 /* Disable timer */
1476 if (ha->timer_active)
1477 qla2x00_stop_timer(ha);
1478
1479 /* Kill the kernel thread for this host */
1480 if (ha->dpc_pid >= 0) {
1481 ha->dpc_should_die = 1;
1482 wmb();
1483 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1484 if (ret) {
1485 qla_printk(KERN_ERR, ha,
1486 "Unable to signal DPC thread -- (%d)\n", ret);
1487
1488 /* TODO: SOMETHING MORE??? */
1489 } else {
1490 wait_for_completion(&ha->dpc_exited);
1491 }
1492 }
1493
1494 qla2x00_mem_free(ha);
1495
1496
1497 ha->flags.online = 0;
1498
1499 /* Detach interrupts */
1500 if (ha->pdev->irq)
1501 free_irq(ha->pdev->irq, ha);
1502
1503 /* release io space registers */
1504 if (ha->iobase)
1505 iounmap(ha->iobase);
1506 pci_release_regions(ha->pdev);
1507
1508 pci_disable_device(ha->pdev);
1509}
1510
1511
1512/*
1513 * The following support functions are adopted to handle
1514 * the re-entrant qla2x00_proc_info correctly.
1515 */
1516static void
1517copy_mem_info(struct info_str *info, char *data, int len)
1518{
1519 if (info->pos + len > info->offset + info->length)
1520 len = info->offset + info->length - info->pos;
1521
1522 if (info->pos + len < info->offset) {
1523 info->pos += len;
1524 return;
1525 }
1526
1527 if (info->pos < info->offset) {
1528 off_t partial;
1529
1530 partial = info->offset - info->pos;
1531 data += partial;
1532 info->pos += partial;
1533 len -= partial;
1534 }
1535
1536 if (len > 0) {
1537 memcpy(info->buffer, data, len);
1538 info->pos += len;
1539 info->buffer += len;
1540 }
1541}
1542
1543static int
1544copy_info(struct info_str *info, char *fmt, ...)
1545{
1546 va_list args;
1547 char buf[256];
1548 int len;
1549
1550 va_start(args, fmt);
1551 len = vsprintf(buf, fmt, args);
1552 va_end(args);
1553
1554 copy_mem_info(info, buf, len);
1555
1556 return (len);
1557}
1558
1559/*************************************************************************
1560* qla2x00_proc_info
1561*
1562* Description:
1563* Return information to handle /proc support for the driver.
1564*
1565* inout : decides the direction of the dataflow and the meaning of the
1566* variables
1567* buffer: If inout==0 data is being written to it else read from it
1568* (ptr to a page buffer)
1569* *start: If inout==0 start of the valid data in the buffer
1570* offset: If inout==0 starting offset from the beginning of all
1571* possible data to return.
1572* length: If inout==0 max number of bytes to be written into the buffer
1573* else number of bytes in "buffer"
1574* Returns:
1575* < 0: error. errno value.
1576* >= 0: sizeof data returned.
1577*************************************************************************/
1578int
1579qla2x00_proc_info(struct Scsi_Host *shost, char *buffer,
1580 char **start, off_t offset, int length, int inout)
1581{
1582 struct info_str info;
1583 int retval = -EINVAL;
1584 os_lun_t *up;
1585 os_tgt_t *tq;
1586 unsigned int t, l;
1587 uint32_t tmp_sn;
1588 uint32_t *flags;
1589 uint8_t *loop_state;
1590 scsi_qla_host_t *ha;
1591 char fw_info[30];
1592
1593 DEBUG3(printk(KERN_INFO
1594 "Entering proc_info buff_in=%p, offset=0x%lx, length=0x%x\n",
1595 buffer, offset, length);)
1596
1597 ha = (scsi_qla_host_t *) shost->hostdata;
1598
1599 if (inout) {
1600 /* Has data been written to the file? */
1601 DEBUG3(printk(
1602 "%s: has data been written to the file. \n",
1603 __func__);)
1604
1605 return -ENOSYS;
1606 }
1607
1608 if (start) {
1609 *start = buffer;
1610 }
1611
1612 info.buffer = buffer;
1613 info.length = length;
1614 info.offset = offset;
1615 info.pos = 0;
1616
1617 /* start building the print buffer */
1618 copy_info(&info,
1619 "QLogic PCI to Fibre Channel Host Adapter for %s:\n"
1620 " Firmware version %s, ",
1621 ha->model_number, qla2x00_get_fw_version_str(ha, fw_info));
1622
1623 copy_info(&info, "Driver version %s\n", qla2x00_version_str);
1624
1625 tmp_sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) |
1626 ha->serial1;
1627 copy_info(&info, "ISP: %s, Serial# %c%05d\n",
1628 ha->brd_info->isp_name, ('A' + tmp_sn/100000), (tmp_sn%100000));
1629
1630 copy_info(&info,
1631 "Request Queue = 0x%llx, Response Queue = 0x%llx\n",
1632 (unsigned long long)ha->request_dma,
1633 (unsigned long long)ha->response_dma);
1634
1635 copy_info(&info,
1636 "Request Queue count = %d, Response Queue count = %d\n",
1637 ha->request_q_length, ha->response_q_length);
1638
1639 copy_info(&info,
1640 "Total number of active commands = %ld\n",
1641 ha->actthreads);
1642
1643 copy_info(&info,
1644 "Total number of interrupts = %ld\n",
1645 (long)ha->total_isr_cnt);
1646
1647 copy_info(&info,
1648 " Device queue depth = 0x%x\n",
1649 (ql2xmaxqdepth == 0) ? 16 : ql2xmaxqdepth);
1650
1651 copy_info(&info,
1652 "Number of free request entries = %d\n", ha->req_q_cnt);
1653
1654 copy_info(&info,
1655 "Number of mailbox timeouts = %ld\n", ha->total_mbx_timeout);
1656
1657 copy_info(&info,
1658 "Number of ISP aborts = %ld\n", ha->total_isp_aborts);
1659
1660 copy_info(&info,
1661 "Number of loop resyncs = %ld\n", ha->total_loop_resync);
1662
1663 copy_info(&info,
1664 "Number of retries for empty slots = %ld\n",
1665 qla2x00_stats.outarray_full);
1666
1da177e4
LT		 1667 flags = (uint32_t *) &ha->flags;
1668
1669 if (atomic_read(&ha->loop_state) == LOOP_DOWN) {
1670 loop_state = "DOWN";
1671 } else if (atomic_read(&ha->loop_state) == LOOP_UP) {
1672 loop_state = "UP";
1673 } else if (atomic_read(&ha->loop_state) == LOOP_READY) {
1674 loop_state = "READY";
1675 } else if (atomic_read(&ha->loop_state) == LOOP_TIMEOUT) {
1676 loop_state = "TIMEOUT";
1677 } else if (atomic_read(&ha->loop_state) == LOOP_UPDATE) {
1678 loop_state = "UPDATE";
1679 } else {
1680 loop_state = "UNKNOWN";
1681 }
1682
1683 copy_info(&info,
1684 "Host adapter:loop state = <%s>, flags = 0x%lx\n",
1685 loop_state , *flags);
1686
1687 copy_info(&info, "Dpc flags = 0x%lx\n", ha->dpc_flags);
1688
1689 copy_info(&info, "MBX flags = 0x%x\n", ha->mbx_flags);
1690
1691 copy_info(&info, "Link down Timeout = %3.3d\n",
1692 ha->link_down_timeout);
1693
1694 copy_info(&info, "Port down retry = %3.3d\n",
1695 ha->port_down_retry_count);
1696
1697 copy_info(&info, "Login retry count = %3.3d\n",
1698 ha->login_retry_count);
1699
1700 copy_info(&info,
1701 "Commands retried with dropped frame(s) = %d\n",
1702 ha->dropped_frame_error_cnt);
1703
1704 copy_info(&info,
1705 "Product ID = %04x %04x %04x %04x\n", ha->product_id[0],
1706 ha->product_id[1], ha->product_id[2], ha->product_id[3]);
1707
1708 copy_info(&info, "\n");
1709
1710 /* 2.25 node/port display to proc */
1711 /* Display the node name for adapter */
1712 copy_info(&info, "\nSCSI Device Information:\n");
1713 copy_info(&info,
1714 "scsi-qla%d-adapter-node="
1715 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
1716 (int)ha->instance,
1717 ha->init_cb->node_name[0],
1718 ha->init_cb->node_name[1],
1719 ha->init_cb->node_name[2],
1720 ha->init_cb->node_name[3],
1721 ha->init_cb->node_name[4],
1722 ha->init_cb->node_name[5],
1723 ha->init_cb->node_name[6],
1724 ha->init_cb->node_name[7]);
1725
1726 /* display the port name for adapter */
1727 copy_info(&info,
1728 "scsi-qla%d-adapter-port="
1729 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
1730 (int)ha->instance,
1731 ha->init_cb->port_name[0],
1732 ha->init_cb->port_name[1],
1733 ha->init_cb->port_name[2],
1734 ha->init_cb->port_name[3],
1735 ha->init_cb->port_name[4],
1736 ha->init_cb->port_name[5],
1737 ha->init_cb->port_name[6],
1738 ha->init_cb->port_name[7]);
1739
1740 /* Print out device port names */
1741 for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
1742 if ((tq = TGT_Q(ha, t)) == NULL)
1743 continue;
1744
1745 copy_info(&info,
1746 "scsi-qla%d-target-%d="
1747 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
1748 (int)ha->instance, t,
1749 tq->port_name[0], tq->port_name[1],
1750 tq->port_name[2], tq->port_name[3],
1751 tq->port_name[4], tq->port_name[5],
1752 tq->port_name[6], tq->port_name[7]);
1753 }
1754
1755 copy_info(&info, "\nSCSI LUN Information:\n");
1756 copy_info(&info,
1757 "(Id:Lun) * - indicates lun is not registered with the OS.\n");
1758
1759 /* scan for all equipment stats */
1760 for (t = 0; t < MAX_FIBRE_DEVICES; t++) {
1761 /* scan all luns */
1762 for (l = 0; l < ha->max_luns; l++) {
1763 up = (os_lun_t *) GET_LU_Q(ha, t, l);
1764
1765 if (up == NULL) {
1766 continue;
1767 }
1768 if (up->fclun == NULL) {
1769 continue;
1770 }
1771
1772 copy_info(&info,
1773 "(%2d:%2d): Total reqs %ld,",
1774 t,l,up->io_cnt);
1775
1776 copy_info(&info,
1777 " Pending reqs %ld,",
1778 up->out_cnt);
1779
1780 if (up->io_cnt < 4) {
1781 copy_info(&info,
1782 " flags 0x%x*,",
1783 (int)up->q_flag);
1784 } else {
1785 copy_info(&info,
1786 " flags 0x%x,",
1787 (int)up->q_flag);
1788 }
1789
1790 copy_info(&info,
1791 " %ld:%d:%02x %02x",
1792 up->fclun->fcport->ha->instance,
1793 up->fclun->fcport->cur_path,
1794 up->fclun->fcport->loop_id,
1795 up->fclun->device_type);
1796
1797 copy_info(&info, "\n");
1798
1799 if (info.pos >= info.offset + info.length) {
1800 /* No need to continue */
1801 goto profile_stop;
1802 }
1803 }
1804
1805 if (info.pos >= info.offset + info.length) {
1806 /* No need to continue */
1807 break;
1808 }
1809 }
1810
1811profile_stop:
1812
1813 retval = info.pos > info.offset ? info.pos - info.offset : 0;
1814
1815 DEBUG3(printk(KERN_INFO
1816 "Exiting proc_info: info.pos=%d, offset=0x%lx, "
1817 "length=0x%x\n", info.pos, offset, length);)
1818
1819 return (retval);
1820}
1821
1822/*
1823* qla2x00_display_fc_names
1824* This routine will the node names of the different devices found
1825* after port inquiry.
1826*
1827* Input:
1828* cmd = SCSI command structure
1829*
1830* Returns:
1831* None.
1832*/
1833static void
1834qla2x00_display_fc_names(scsi_qla_host_t *ha)
1835{
1836 uint16_t tgt;
1837 os_tgt_t *tq;
1838
1839 /* Display the node name for adapter */
1840 qla_printk(KERN_INFO, ha,
1841 "scsi-qla%d-adapter-node=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
1842 (int)ha->instance,
1843 ha->init_cb->node_name[0],
1844 ha->init_cb->node_name[1],
1845 ha->init_cb->node_name[2],
1846 ha->init_cb->node_name[3],
1847 ha->init_cb->node_name[4],
1848 ha->init_cb->node_name[5],
1849 ha->init_cb->node_name[6],
1850 ha->init_cb->node_name[7]);
1851
1852 /* display the port name for adapter */
1853 qla_printk(KERN_INFO, ha,
1854 "scsi-qla%d-adapter-port=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
1855 (int)ha->instance,
1856 ha->init_cb->port_name[0],
1857 ha->init_cb->port_name[1],
1858 ha->init_cb->port_name[2],
1859 ha->init_cb->port_name[3],
1860 ha->init_cb->port_name[4],
1861 ha->init_cb->port_name[5],
1862 ha->init_cb->port_name[6],
1863 ha->init_cb->port_name[7]);
1864
1865 /* Print out device port names */
1866 for (tgt = 0; tgt < MAX_TARGETS; tgt++) {
1867 if ((tq = ha->otgt[tgt]) == NULL)
1868 continue;
1869
1870 if (tq->fcport == NULL)
1871 continue;
1872
1873 switch (ha->binding_type) {
1874 case BIND_BY_PORT_NAME:
1875 qla_printk(KERN_INFO, ha,
1876 "scsi-qla%d-tgt-%d-di-0-port="
1877 "%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
1878 (int)ha->instance,
1879 tgt,
1880 tq->port_name[0],
1881 tq->port_name[1],
1882 tq->port_name[2],
1883 tq->port_name[3],
1884 tq->port_name[4],
1885 tq->port_name[5],
1886 tq->port_name[6],
1887 tq->port_name[7]);
1888
1889 break;
1890
1891 case BIND_BY_PORT_ID:
1892 qla_printk(KERN_INFO, ha,
1893 "scsi-qla%d-tgt-%d-di-0-pid="
1894 "%02x%02x%02x\\;\n",
1895 (int)ha->instance,
1896 tgt,
1897 tq->d_id.b.domain,
1898 tq->d_id.b.area,
1899 tq->d_id.b.al_pa);
1900 break;
1901 }
1902
1903#if VSA
1904 qla_printk(KERN_INFO, ha,
1905 "scsi-qla%d-target-%d-vsa=01;\n", (int)ha->instance, tgt);
1906#endif
1907 }
1908}
1909
1da177e4
LT		 1910
1911/*
1912 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1913 *
1914 * Input: ha = adapter block pointer. fcport = port structure pointer.
1915 *
1916 * Return: None.
1917 *
1918 * Context:
1919 */
1920void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1921 int do_login)
1922{
8482e118 1923 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1924 fc_remote_port_block(fcport->rport);
1da177e4
LT		 1925 /*
1926 * We may need to retry the login, so don't change the state of the
1927 * port but do the retries.
1928 */
1929 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1930 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1931
1932 if (!do_login)
1933 return;
1934
1935 if (fcport->login_retry == 0) {
1936 fcport->login_retry = ha->login_retry_count;
1937 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1938
1939 DEBUG(printk("scsi(%ld): Port login retry: "
1940 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1941 "id = 0x%04x retry cnt=%d\n",
1942 ha->host_no,
1943 fcport->port_name[0],
1944 fcport->port_name[1],
1945 fcport->port_name[2],
1946 fcport->port_name[3],
1947 fcport->port_name[4],
1948 fcport->port_name[5],
1949 fcport->port_name[6],
1950 fcport->port_name[7],
1951 fcport->loop_id,
1952 fcport->login_retry));
1953 }
1954}
1955
1956/*
1957 * qla2x00_mark_all_devices_lost
1958 * Updates fcport state when device goes offline.
1959 *
1960 * Input:
1961 * ha = adapter block pointer.
1962 * fcport = port structure pointer.
1963 *
1964 * Return:
1965 * None.
1966 *
1967 * Context:
1968 */
1969void
1970qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1971{
1972 fc_port_t *fcport;
1973
1974 list_for_each_entry(fcport, &ha->fcports, list) {
1975 if (fcport->port_type != FCT_TARGET)
1976 continue;
1977
1978 /*
1979 * No point in marking the device as lost, if the device is
1980 * already DEAD.
1981 */
1982 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1983 continue;
8482e118 1984 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1985 fc_remote_port_block(fcport->rport);
1da177e4
LT		 1986 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1987 }
1988}
1989
1990/*
1991* qla2x00_mem_alloc
1992* Allocates adapter memory.
1993*
1994* Returns:
1995* 0 = success.
1996* 1 = failure.
1997*/
1998static uint8_t
1999qla2x00_mem_alloc(scsi_qla_host_t *ha)
2000{
2001 char name[16];
2002 uint8_t status = 1;
2003 int retry= 10;
2004
2005 do {
2006 /*
2007 * This will loop only once if everything goes well, else some
2008 * number of retries will be performed to get around a kernel
2009 * bug where available mem is not allocated until after a
2010 * little delay and a retry.
2011 */
2012 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
2013 (ha->request_q_length + 1) * sizeof(request_t),
2014 &ha->request_dma, GFP_KERNEL);
2015 if (ha->request_ring == NULL) {
2016 qla_printk(KERN_WARNING, ha,
2017 "Memory Allocation failed - request_ring\n");
2018
2019 qla2x00_mem_free(ha);
2020 msleep(100);
2021
2022 continue;
2023 }
2024
2025 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
2026 (ha->response_q_length + 1) * sizeof(response_t),
2027 &ha->response_dma, GFP_KERNEL);
2028 if (ha->response_ring == NULL) {
2029 qla_printk(KERN_WARNING, ha,
2030 "Memory Allocation failed - response_ring\n");
2031
2032 qla2x00_mem_free(ha);
2033 msleep(100);
2034
2035 continue;
2036 }
2037
2038 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
2039 &ha->gid_list_dma, GFP_KERNEL);
2040 if (ha->gid_list == NULL) {
2041 qla_printk(KERN_WARNING, ha,
2042 "Memory Allocation failed - gid_list\n");
2043
2044 qla2x00_mem_free(ha);
2045 msleep(100);
2046
2047 continue;
2048 }
2049
2050 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
2051 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
2052 if (ha->rlc_rsp == NULL) {
2053 qla_printk(KERN_WARNING, ha,
2054 "Memory Allocation failed - rlc");
2055
2056 qla2x00_mem_free(ha);
2057 msleep(100);
2058
2059 continue;
2060 }
2061
2062 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
2063 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
2064 DMA_POOL_SIZE, 8, 0);
2065 if (ha->s_dma_pool == NULL) {
2066 qla_printk(KERN_WARNING, ha,
2067 "Memory Allocation failed - s_dma_pool\n");
2068
2069 qla2x00_mem_free(ha);
2070 msleep(100);
2071
2072 continue;
2073 }
2074
2075 /* get consistent memory allocated for init control block */
2076 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2077 &ha->init_cb_dma);
2078 if (ha->init_cb == NULL) {
2079 qla_printk(KERN_WARNING, ha,
2080 "Memory Allocation failed - init_cb\n");
2081
2082 qla2x00_mem_free(ha);
2083 msleep(100);
2084
2085 continue;
2086 }
2087 memset(ha->init_cb, 0, sizeof(init_cb_t));
2088
2089 /* Get consistent memory allocated for Get Port Database cmd */
2090 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2091 &ha->iodesc_pd_dma);
2092 if (ha->iodesc_pd == NULL) {
2093 /* error */
2094 qla_printk(KERN_WARNING, ha,
2095 "Memory Allocation failed - iodesc_pd\n");
2096
2097 qla2x00_mem_free(ha);
2098 msleep(100);
2099
2100 continue;
2101 }
2102 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
2103
2104 /* Allocate ioctl related memory. */
2105 if (qla2x00_alloc_ioctl_mem(ha)) {
2106 qla_printk(KERN_WARNING, ha,
2107 "Memory Allocation failed - ioctl_mem\n");
2108
2109 qla2x00_mem_free(ha);
2110 msleep(100);
2111
2112 continue;
2113 }
2114
2115 if (qla2x00_allocate_sp_pool(ha)) {
2116 qla_printk(KERN_WARNING, ha,
2117 "Memory Allocation failed - "
2118 "qla2x00_allocate_sp_pool()\n");
2119
2120 qla2x00_mem_free(ha);
2121 msleep(100);
2122
2123 continue;
2124 }
2125
2126 /* Allocate memory for SNS commands */
2127 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
2128 /* Get consistent memory allocated for SNS commands */
2129 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
2130 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
2131 GFP_KERNEL);
2132 if (ha->sns_cmd == NULL) {
2133 /* error */
2134 qla_printk(KERN_WARNING, ha,
2135 "Memory Allocation failed - sns_cmd\n");
2136
2137 qla2x00_mem_free(ha);
2138 msleep(100);
2139
2140 continue;
2141 }
2142 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
2143 } else {
2144 /* Get consistent memory allocated for MS IOCB */
2145 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
2146 &ha->ms_iocb_dma);
2147 if (ha->ms_iocb == NULL) {
2148 /* error */
2149 qla_printk(KERN_WARNING, ha,
2150 "Memory Allocation failed - ms_iocb\n");
2151
2152 qla2x00_mem_free(ha);
2153 msleep(100);
2154
2155 continue;
2156 }
2157 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
2158
2159 /*
2160 * Get consistent memory allocated for CT SNS
2161 * commands
2162 */
2163 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
2164 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
2165 GFP_KERNEL);
2166 if (ha->ct_sns == NULL) {
2167 /* error */
2168 qla_printk(KERN_WARNING, ha,
2169 "Memory Allocation failed - ct_sns\n");
2170
2171 qla2x00_mem_free(ha);
2172 msleep(100);
2173
2174 continue;
2175 }
2176 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
2177 }
2178
2179 /* Done all allocations without any error. */
2180 status = 0;
2181
2182 } while (retry-- && status != 0);
2183
2184 if (status) {
2185 printk(KERN_WARNING
2186 "%s(): **** FAILED ****\n", __func__);
2187 }
2188
2189 return(status);
2190}
2191
2192/*
2193* qla2x00_mem_free
2194* Frees all adapter allocated memory.
2195*
2196* Input:
2197* ha = adapter block pointer.
2198*/
2199static void
2200qla2x00_mem_free(scsi_qla_host_t *ha)
2201{
2202 uint32_t t;
2203 struct list_head *fcpl, *fcptemp;
2204 fc_port_t *fcport;
2205 struct list_head *fcll, *fcltemp;
2206 fc_lun_t *fclun;
2207 unsigned long wtime;/* max wait time if mbx cmd is busy. */
2208
2209 if (ha == NULL) {
2210 /* error */
2211 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2212 return;
2213 }
2214
2215 /* Free the target queues */
2216 for (t = 0; t < MAX_TARGETS; t++) {
2217 qla2x00_tgt_free(ha, t);
2218 }
2219
2220 /* Make sure all other threads are stopped. */
2221 wtime = 60 * HZ;
2222 while (ha->dpc_wait && wtime) {
2223 set_current_state(TASK_INTERRUPTIBLE);
2224 wtime = schedule_timeout(wtime);
2225 }
2226
2227 /* free ioctl memory */
2228 qla2x00_free_ioctl_mem(ha);
2229
2230 /* free sp pool */
2231 qla2x00_free_sp_pool(ha);
2232
2233 if (ha->sns_cmd)
2234 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2235 ha->sns_cmd, ha->sns_cmd_dma);
2236
2237 if (ha->ct_sns)
2238 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2239 ha->ct_sns, ha->ct_sns_dma);
2240
2241 if (ha->ms_iocb)
2242 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2243
2244 if (ha->iodesc_pd)
2245 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2246
2247 if (ha->init_cb)
2248 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2249
2250 if (ha->s_dma_pool)
2251 dma_pool_destroy(ha->s_dma_pool);
2252
2253 if (ha->rlc_rsp)
2254 dma_free_coherent(&ha->pdev->dev,
2255 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2256 ha->rlc_rsp_dma);
2257
2258 if (ha->gid_list)
2259 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2260 ha->gid_list_dma);
2261
2262 if (ha->response_ring)
2263 dma_free_coherent(&ha->pdev->dev,
2264 (ha->response_q_length + 1) * sizeof(response_t),
2265 ha->response_ring, ha->response_dma);
2266
2267 if (ha->request_ring)
2268 dma_free_coherent(&ha->pdev->dev,
2269 (ha->request_q_length + 1) * sizeof(request_t),
2270 ha->request_ring, ha->request_dma);
2271
2272 ha->sns_cmd = NULL;
2273 ha->sns_cmd_dma = 0;
2274 ha->ct_sns = NULL;
2275 ha->ct_sns_dma = 0;
2276 ha->ms_iocb = NULL;
2277 ha->ms_iocb_dma = 0;
2278 ha->iodesc_pd = NULL;
2279 ha->iodesc_pd_dma = 0;
2280 ha->init_cb = NULL;
2281 ha->init_cb_dma = 0;
2282
2283 ha->s_dma_pool = NULL;
2284
2285 ha->rlc_rsp = NULL;
2286 ha->rlc_rsp_dma = 0;
2287 ha->gid_list = NULL;
2288 ha->gid_list_dma = 0;
2289
2290 ha->response_ring = NULL;
2291 ha->response_dma = 0;
2292 ha->request_ring = NULL;
2293 ha->request_dma = 0;
2294
2295 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2296 fcport = list_entry(fcpl, fc_port_t, list);
2297
2298 /* fc luns */
2299 list_for_each_safe(fcll, fcltemp, &fcport->fcluns) {
2300 fclun = list_entry(fcll, fc_lun_t, list);
2301
2302 list_del_init(&fclun->list);
2303 kfree(fclun);
2304 }
2305
2306 /* fc ports */
2307 list_del_init(&fcport->list);
2308 kfree(fcport);
2309 }
2310 INIT_LIST_HEAD(&ha->fcports);
2311
2312 if (ha->fw_dump)
2313 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2314
2315 if (ha->fw_dump_buffer)
2316 vfree(ha->fw_dump_buffer);
2317
2318 ha->fw_dump = NULL;
2319 ha->fw_dump_reading = 0;
2320 ha->fw_dump_buffer = NULL;
2321}
2322
2323/*
2324 * qla2x00_allocate_sp_pool
2325 * This routine is called during initialization to allocate
2326 * memory for local srb_t.
2327 *
2328 * Input:
2329 * ha = adapter block pointer.
2330 *
2331 * Context:
2332 * Kernel context.
2333 *
2334 * Note: Sets the ref_count for non Null sp to one.
2335 */
2336static int
2337qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2338{
2339 int rval;
2340
2341 rval = QLA_SUCCESS;
2342 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2343 mempool_free_slab, srb_cachep);
2344 if (ha->srb_mempool == NULL) {
2345 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2346 rval = QLA_FUNCTION_FAILED;
2347 }
2348 return (rval);
2349}
2350
2351/*
2352 * This routine frees all adapter allocated memory.
2353 *
2354 */
2355static void
2356qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2357{
2358 if (ha->srb_mempool) {
2359 mempool_destroy(ha->srb_mempool);
2360 ha->srb_mempool = NULL;
2361 }
2362}
2363
2364/**************************************************************************
2365* qla2x00_do_dpc
2366* This kernel thread is a task that is schedule by the interrupt handler
2367* to perform the background processing for interrupts.
2368*
2369* Notes:
2370* This task always run in the context of a kernel thread. It
2371* is kick-off by the driver's detect code and starts up
2372* up one per adapter. It immediately goes to sleep and waits for
2373* some fibre event. When either the interrupt handler or
2374* the timer routine detects a event it will one of the task
2375* bits then wake us up.
2376**************************************************************************/
2377static int
2378qla2x00_do_dpc(void *data)
2379{
2380 DECLARE_MUTEX_LOCKED(sem);
2381 scsi_qla_host_t *ha;
2382 fc_port_t *fcport;
1da177e4 2383 uint8_t status;
1da177e4 2384 uint16_t next_loopid;
1da177e4
LT		 2385
2386 ha = (scsi_qla_host_t *)data;
2387
2388 lock_kernel();
2389
2390 daemonize("%s_dpc", ha->host_str);
2391 allow_signal(SIGHUP);
2392
2393 ha->dpc_wait = &sem;
2394
2395 set_user_nice(current, -20);
2396
2397 unlock_kernel();
2398
2399 complete(&ha->dpc_inited);
2400
2401 while (1) {
2402 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2403
2404 if (down_interruptible(&sem))
2405 break;
2406
2407 if (ha->dpc_should_die)
2408 break;
2409
2410 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2411
2412 /* Initialization not yet finished. Don't do anything yet. */
2413 if (!ha->flags.init_done || ha->dpc_active)
2414 continue;
2415
2416 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2417
2418 ha->dpc_active = 1;
2419
1da177e4 2420 if (ha->flags.mbox_busy) {
1da177e4
LT		 2421 ha->dpc_active = 0;
2422 continue;
2423 }
2424
2425 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2426
2427 DEBUG(printk("scsi(%ld): dpc: sched "
2428 "qla2x00_abort_isp ha = %p\n",
2429 ha->host_no, ha));
2430 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2431 &ha->dpc_flags))) {
2432
2433 if (qla2x00_abort_isp(ha)) {
2434 /* failed. retry later */
2435 set_bit(ISP_ABORT_NEEDED,
2436 &ha->dpc_flags);
2437 }
2438 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2439 }
2440 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2441 ha->host_no));
2442 }
2443
2444 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2445 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2446
2447 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2448 ha->host_no));
2449
2450 qla2x00_rst_aen(ha);
2451 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2452 }
2453
2454 /* Retry each device up to login retry count */
2455 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2456 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2457 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2458
2459 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2460 ha->host_no));
2461
2462 next_loopid = 0;
2463 list_for_each_entry(fcport, &ha->fcports, list) {
2464 if (fcport->port_type != FCT_TARGET)
2465 continue;
2466
2467 /*
2468 * If the port is not ONLINE then try to login
2469 * to it if we haven't run out of retries.
2470 */
2471 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2472 fcport->login_retry) {
2473
2474 fcport->login_retry--;
2475 if (fcport->flags & FCF_FABRIC_DEVICE) {
2476 if (fcport->flags &
2477 FCF_TAPE_PRESENT)
2478 qla2x00_fabric_logout(
2479 ha,
2480 fcport->loop_id);
2481 status = qla2x00_fabric_login(
2482 ha, fcport, &next_loopid);
2483 } else
2484 status =
2485 qla2x00_local_device_login(
2486 ha, fcport->loop_id);
2487
2488 if (status == QLA_SUCCESS) {
2489 fcport->old_loop_id = fcport->loop_id;
2490
2491 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2492 ha->host_no, fcport->loop_id));
2493
2494 fcport->port_login_retry_count =
2495 ha->port_down_retry_count * PORT_RETRY_TIME;
2496 atomic_set(&fcport->state, FCS_ONLINE);
2497 atomic_set(&fcport->port_down_timer,
2498 ha->port_down_retry_count * PORT_RETRY_TIME);
2499
2500 fcport->login_retry = 0;
2501 } else if (status == 1) {
2502 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2503 /* retry the login again */
2504 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2505 ha->host_no,
2506 fcport->login_retry, fcport->loop_id));
2507 } else {
2508 fcport->login_retry = 0;
2509 }
2510 }
2511 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2512 break;
2513 }
2514 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2515 ha->host_no));
2516 }
2517
2518 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2519 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2520
2521 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2522 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2523 ha->host_no));
2524
2525 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2526
2527 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2528 ha->host_no));
2529 }
2530
2531 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2532
2533 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2534 ha->host_no));
2535
2536 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2537 &ha->dpc_flags))) {
2538
2539 qla2x00_loop_resync(ha);
2540
2541 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2542 }
2543
2544 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2545 ha->host_no));
2546 }
2547
1da177e4
LT		 2548 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2549
2550 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2551 ha->host_no));
2552
2553 qla2x00_rescan_fcports(ha);
2554
2555 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2556 "end.\n",
2557 ha->host_no));
2558 }
2559
1da177e4
LT		 2560 if (!ha->interrupts_on)
2561 qla2x00_enable_intrs(ha);
2562
1da177e4
LT		 2563 ha->dpc_active = 0;
2564 } /* End of while(1) */
2565
2566 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2567
2568 /*
2569 * Make sure that nobody tries to wake us up again.
2570 */
2571 ha->dpc_wait = NULL;
2572 ha->dpc_active = 0;
2573
2574 complete_and_exit(&ha->dpc_exited, 0);
2575}
2576
1da177e4
LT		 2577/*
2578* qla2x00_rst_aen
2579* Processes asynchronous reset.
2580*
2581* Input:
2582* ha = adapter block pointer.
2583*/
2584static void
2585qla2x00_rst_aen(scsi_qla_host_t *ha)
2586{
2587 if (ha->flags.online && !ha->flags.reset_active &&
2588 !atomic_read(&ha->loop_down_timer) &&
2589 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2590 do {
2591 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2592
2593 /*
2594 * Issue marker command only when we are going to start
2595 * the I/O.
2596 */
2597 ha->marker_needed = 1;
2598 } while (!atomic_read(&ha->loop_down_timer) &&
2599 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2600 }
2601}
2602
2603
2604/*
2605 * This routine will allocate SP from the free queue
2606 * input:
2607 * scsi_qla_host_t *
2608 * output:
2609 * srb_t * or NULL
2610 */
2611static srb_t *
2612qla2x00_get_new_sp(scsi_qla_host_t *ha)
2613{
2614 srb_t *sp;
2615
2616 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2617 if (sp)
2618 atomic_set(&sp->ref_count, 1);
2619 return (sp);
2620}
2621
f4f051eb 2622static void
2623qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2624{
2625 struct scsi_cmnd *cmd = sp->cmd;
2626
2627 if (sp->flags & SRB_DMA_VALID) {
2628 if (cmd->use_sg) {
2629 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2630 cmd->use_sg, cmd->sc_data_direction);
2631 } else if (cmd->request_bufflen) {
2632 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2633 cmd->request_bufflen, cmd->sc_data_direction);
2634 }
2635 sp->flags &= ~SRB_DMA_VALID;
2636 }
2637}
2638
2639void
2640qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2641{
2642 struct scsi_cmnd *cmd = sp->cmd;
2643
2644 qla2x00_sp_free_dma(ha, sp);
2645
2646 CMD_SP(cmd) = NULL;
2647 mempool_free(sp, ha->srb_mempool);
2648
2649 cmd->scsi_done(cmd);
2650}
1da177e4
LT		 2651/**************************************************************************
2652* qla2x00_timer
2653*
2654* Description:
2655* One second timer
2656*
2657* Context: Interrupt
2658***************************************************************************/
2659static void
2660qla2x00_timer(scsi_qla_host_t *ha)
2661{
1da177e4
LT		 2662 unsigned long cpu_flags = 0;
2663 fc_port_t *fcport;
1da177e4
LT		 2664 int start_dpc = 0;
2665 int index;
2666 srb_t *sp;
f4f051eb 2667 int t;
1da177e4
LT		 2668
2669 /*
2670 * Ports - Port down timer.
2671 *
2672 * Whenever, a port is in the LOST state we start decrementing its port
2673 * down timer every second until it reaches zero. Once it reaches zero
2674 * the port it marked DEAD.
2675 */
2676 t = 0;
2677 list_for_each_entry(fcport, &ha->fcports, list) {
2678 if (fcport->port_type != FCT_TARGET)
2679 continue;
2680
2681 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2682
2683 if (atomic_read(&fcport->port_down_timer) == 0)
2684 continue;
2685
2686 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2687 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2688
2689 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2690 "%d remainning\n",
2691 ha->host_no,
2692 t, atomic_read(&fcport->port_down_timer)));
2693 }
2694 t++;
2695 } /* End of for fcport */
2696
1da177e4
LT		 2697
2698 /* Loop down handler. */
2699 if (atomic_read(&ha->loop_down_timer) > 0 &&
2700 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2701
2702 if (atomic_read(&ha->loop_down_timer) ==
2703 ha->loop_down_abort_time) {
2704
2705 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2706 "queues before time expire\n",
2707 ha->host_no));
2708
2709 if (!IS_QLA2100(ha) && ha->link_down_timeout)
2710 atomic_set(&ha->loop_state, LOOP_DEAD);
2711
2712 /* Schedule an ISP abort to return any tape commands. */
2713 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2714 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2715 index++) {
2716 sp = ha->outstanding_cmds[index];
2717 if (!sp)
2718 continue;
2719 if (!(sp->fclun->fcport->flags &
2720 FCF_TAPE_PRESENT))
2721 continue;
2722
2723 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2724 break;
2725 }
2726 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2727
2728 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2729 start_dpc++;
2730 }
2731
2732 /* if the loop has been down for 4 minutes, reinit adapter */
2733 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2734 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2735 "restarting queues.\n",
2736 ha->host_no));
2737
2738 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2739 start_dpc++;
2740
2741 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2742 DEBUG(printk("scsi(%ld): Loop down - "
2743 "aborting ISP.\n",
2744 ha->host_no));
2745 qla_printk(KERN_WARNING, ha,
2746 "Loop down - aborting ISP.\n");
2747
2748 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2749 }
2750 }
2751 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2752 ha->host_no,
2753 atomic_read(&ha->loop_down_timer)));
2754 }
2755
1da177e4
LT		 2756 /* Schedule the DPC routine if needed */
2757 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2758 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2759 start_dpc ||
2760 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
f4f051eb 2761 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
1da177e4
LT		 2762 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2763 ha->dpc_wait && !ha->dpc_active) {
2764
2765 up(ha->dpc_wait);
2766 }
2767
2768 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2769}
2770
1da177e4
LT		 2771/* XXX(hch): crude hack to emulate a down_timeout() */
2772int
2773qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2774{
2775 const unsigned int step = HZ/10;
2776
2777 do {
2778 if (!down_trylock(sema))
2779 return 0;
2780 set_current_state(TASK_INTERRUPTIBLE);
2781 if (schedule_timeout(step))
2782 break;
2783 } while ((timeout -= step) > 0);
2784
2785 return -ETIMEDOUT;
2786}
2787
1da177e4
LT		 2788/**
2789 * qla2x00_module_init - Module initialization.
2790 **/
2791static int __init
2792qla2x00_module_init(void)
2793{
2794 /* Allocate cache for SRBs. */
2795 sprintf(srb_cachep_name, "qla2xxx_srbs");
2796 srb_cachep = kmem_cache_create(srb_cachep_name, sizeof(srb_t), 0,
2797 SLAB_HWCACHE_ALIGN, NULL, NULL);
2798 if (srb_cachep == NULL) {
2799 printk(KERN_ERR
2800 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2801 return -ENOMEM;
2802 }
2803
2804 /* Derive version string. */
2805 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2806#if DEBUG_QLA2100
2807 strcat(qla2x00_version_str, "-debug");
2808#endif
8482e118 2809 qla2xxx_transport_template = qla2x00_alloc_transport_tmpl();
1da177e4
LT		 2810 if (!qla2xxx_transport_template)
2811 return -ENODEV;
2812
2813 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2814 return 0;
2815}
2816
2817/**
2818 * qla2x00_module_exit - Module cleanup.
2819 **/
2820static void __exit
2821qla2x00_module_exit(void)
2822{
2823 /* Free SRBs cache. */
2824 if (srb_cachep != NULL) {
2825 if (kmem_cache_destroy(srb_cachep) != 0) {
2826 printk(KERN_ERR
2827 "qla2xxx: Unable to free SRB cache...Memory pools "
2828 "still active?\n");
2829 }
2830 srb_cachep = NULL;
2831 }
2832
2833 fc_release_transport(qla2xxx_transport_template);
2834}
2835
2836module_init(qla2x00_module_init);
2837module_exit(qla2x00_module_exit);
2838
2839MODULE_AUTHOR("QLogic Corporation");
2840MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2841MODULE_LICENSE("GPL");
2842MODULE_VERSION(QLA2XXX_VERSION);
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