blob: 2b6104daacb01f44edfa07ef573a0d81891af042 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
8482e1182005-04-17 15:04:54 -050066int qlport_down_retry = 30;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067module_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
Linus Torvalds1da177e2005-04-16 15:20:36 -070078int ql2xplogiabsentdevice;
79module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
80MODULE_PARM_DESC(ql2xplogiabsentdevice,
81 "Option to enable PLOGI to devices that are not present after "
82 "a Fabric scan. This is needed for several broken switches."
83 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
84
85int ql2xenablezio = 0;
86module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
87MODULE_PARM_DESC(ql2xenablezio,
88 "Option to enable ZIO:If 1 then enable it otherwise"
89 " use the default set in the NVRAM."
90 " Default is 0 : disabled");
91
92int ql2xintrdelaytimer = 10;
93module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
94MODULE_PARM_DESC(ql2xintrdelaytimer,
95 "ZIO: Waiting time for Firmware before it generates an "
96 "interrupt to the host to notify completion of request.");
97
98int ConfigRequired;
99module_param(ConfigRequired, int, S_IRUGO|S_IRUSR);
100MODULE_PARM_DESC(ConfigRequired,
101 "If 1, then only configured devices passed in through the"
102 "ql2xopts parameter will be presented to the OS");
103
104int Bind = BIND_BY_PORT_NAME;
105module_param(Bind, int, S_IRUGO|S_IRUSR);
106MODULE_PARM_DESC(Bind,
107 "Target persistent binding method: "
108 "0 by Portname (default); 1 by PortID; 2 by Nodename. ");
109
110int ql2xsuspendcount = SUSPEND_COUNT;
111module_param(ql2xsuspendcount, int, S_IRUGO|S_IWUSR);
112MODULE_PARM_DESC(ql2xsuspendcount,
113 "Number of 6-second suspend iterations to perform while a "
114 "target returns a <NOT READY> status. Default is 10 "
115 "iterations.");
116
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117int ql2xloginretrycount = 0;
118module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
119MODULE_PARM_DESC(ql2xloginretrycount,
120 "Specify an alternate value for the NVRAM login retry count.");
121
122/*
123 * Proc structures and functions
124 */
125struct info_str {
126 char *buffer;
127 int length;
128 off_t offset;
129 int pos;
130};
131
132static void copy_mem_info(struct info_str *, char *, int);
133static int copy_info(struct info_str *, char *, ...);
134
135static void qla2x00_free_device(scsi_qla_host_t *);
136
137static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
138
139/*
140 * SCSI host template entry points
141 */
142static int qla2xxx_slave_configure(struct scsi_device * device);
f4f051e2005-04-17 15:02:26 -0500143static int qla2xxx_slave_alloc(struct scsi_device *);
144static void qla2xxx_slave_destroy(struct scsi_device *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
146 void (*fn)(struct scsi_cmnd *));
147static int qla2xxx_eh_abort(struct scsi_cmnd *);
148static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
149static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
150static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
151static int qla2x00_loop_reset(scsi_qla_host_t *ha);
152static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
153
154static int qla2x00_proc_info(struct Scsi_Host *, char *, char **,
155 off_t, int, int);
156
157static struct scsi_host_template qla2x00_driver_template = {
158 .module = THIS_MODULE,
159 .name = "qla2xxx",
160 .proc_name = "qla2xxx",
161 .proc_info = qla2x00_proc_info,
162 .queuecommand = qla2x00_queuecommand,
163
164 .eh_abort_handler = qla2xxx_eh_abort,
165 .eh_device_reset_handler = qla2xxx_eh_device_reset,
166 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
167 .eh_host_reset_handler = qla2xxx_eh_host_reset,
168
169 .slave_configure = qla2xxx_slave_configure,
170
f4f051e2005-04-17 15:02:26 -0500171 .slave_alloc = qla2xxx_slave_alloc,
172 .slave_destroy = qla2xxx_slave_destroy,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173 .this_id = -1,
174 .cmd_per_lun = 3,
175 .use_clustering = ENABLE_CLUSTERING,
176 .sg_tablesize = SG_ALL,
177
178 /*
179 * The RISC allows for each command to transfer (2^32-1) bytes of data,
180 * which equates to 0x800000 sectors.
181 */
182 .max_sectors = 0xFFFF,
183};
184
185static struct scsi_transport_template *qla2xxx_transport_template = NULL;
186
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187/* TODO Convert to inlines
188 *
189 * Timer routines
190 */
191#define WATCH_INTERVAL 1 /* number of seconds */
192
193static void qla2x00_timer(scsi_qla_host_t *);
194
195static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
196 void *, unsigned long);
197static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
198static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
199
200static inline void
201qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
202{
203 init_timer(&ha->timer);
204 ha->timer.expires = jiffies + interval * HZ;
205 ha->timer.data = (unsigned long)ha;
206 ha->timer.function = (void (*)(unsigned long))func;
207 add_timer(&ha->timer);
208 ha->timer_active = 1;
209}
210
211static inline void
212qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
213{
214 mod_timer(&ha->timer, jiffies + interval * HZ);
215}
216
217static __inline__ void
218qla2x00_stop_timer(scsi_qla_host_t *ha)
219{
220 del_timer_sync(&ha->timer);
221 ha->timer_active = 0;
222}
223
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224static int qla2x00_do_dpc(void *data);
225
226static void qla2x00_rst_aen(scsi_qla_host_t *);
227
228static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
229static void qla2x00_mem_free(scsi_qla_host_t *ha);
230static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
231static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
f4f051e2005-04-17 15:02:26 -0500232static srb_t *qla2x00_get_new_sp(scsi_qla_host_t *);
233static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
234void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236/* -------------------------------------------------------------------------- */
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238static char *
239qla2x00_get_pci_info_str(struct scsi_qla_host *ha, char *str)
240{
241 static char *pci_bus_modes[] = {
242 "33", "66", "100", "133",
243 };
244 uint16_t pci_bus;
245
246 strcpy(str, "PCI");
247 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
248 if (pci_bus) {
249 strcat(str, "-X (");
250 strcat(str, pci_bus_modes[pci_bus]);
251 } else {
252 pci_bus = (ha->pci_attr & BIT_8) >> 8;
253 strcat(str, " (");
254 strcat(str, pci_bus_modes[pci_bus]);
255 }
256 strcat(str, " MHz)");
257
258 return (str);
259}
260
261char *
262qla2x00_get_fw_version_str(struct scsi_qla_host *ha, char *str)
263{
264 char un_str[10];
265
266 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
267 ha->fw_minor_version,
268 ha->fw_subminor_version);
269
270 if (ha->fw_attributes & BIT_9) {
271 strcat(str, "FLX");
272 return (str);
273 }
274
275 switch (ha->fw_attributes & 0xFF) {
276 case 0x7:
277 strcat(str, "EF");
278 break;
279 case 0x17:
280 strcat(str, "TP");
281 break;
282 case 0x37:
283 strcat(str, "IP");
284 break;
285 case 0x77:
286 strcat(str, "VI");
287 break;
288 default:
289 sprintf(un_str, "(%x)", ha->fw_attributes);
290 strcat(str, un_str);
291 break;
292 }
293 if (ha->fw_attributes & 0x100)
294 strcat(str, "X");
295
296 return (str);
297}
298
299/**************************************************************************
300* qla2x00_queuecommand
301*
302* Description:
303* Queue a command to the controller.
304*
305* Input:
306* cmd - pointer to Scsi cmd structure
307* fn - pointer to Scsi done function
308*
309* Returns:
310* 0 - Always
311*
312* Note:
313* The mid-level driver tries to ensures that queuecommand never gets invoked
314* concurrently with itself or the interrupt handler (although the
315* interrupt handler may call this routine as part of request-completion
316* handling).
317**************************************************************************/
318static int
f4f051e2005-04-17 15:02:26 -0500319qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320{
f4f051e2005-04-17 15:02:26 -0500321 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79622005-04-17 15:06:53 -0500322 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051e2005-04-17 15:02:26 -0500323 srb_t *sp;
324 int rval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
bdf79622005-04-17 15:06:53 -0500326 if (!fcport) {
f4f051e2005-04-17 15:02:26 -0500327 cmd->result = DID_NO_CONNECT << 16;
328 goto qc_fail_command;
329 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330
f4f051e2005-04-17 15:02:26 -0500331 if (atomic_read(&fcport->state) != FCS_ONLINE) {
332 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
333 atomic_read(&ha->loop_state) == LOOP_DEAD) {
334 cmd->result = DID_NO_CONNECT << 16;
335 goto qc_fail_command;
336 }
337 goto qc_host_busy;
338 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 spin_unlock_irq(ha->host->host_lock);
341
f4f051e2005-04-17 15:02:26 -0500342 /* Allocate a command packet from the "sp" pool. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 if ((sp = qla2x00_get_new_sp(ha)) == NULL) {
f4f051e2005-04-17 15:02:26 -0500344 goto qc_host_busy_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 }
346
f4f051e2005-04-17 15:02:26 -0500347 sp->ha = ha;
bdf79622005-04-17 15:06:53 -0500348 sp->fcport = fcport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 sp->cmd = cmd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350 sp->flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 sp->err_id = 0;
352
f4f051e2005-04-17 15:02:26 -0500353 CMD_SP(cmd) = (void *)sp;
354 cmd->scsi_done = done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
f4f051e2005-04-17 15:02:26 -0500356 rval = qla2x00_start_scsi(sp);
357 if (rval != QLA_SUCCESS)
358 goto qc_host_busy_free_sp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359
f4f051e2005-04-17 15:02:26 -0500360 /* Manage unprocessed RIO/ZIO commands in response queue. */
361 if (ha->flags.online && ha->flags.process_response_queue &&
362 ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
363 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364
f4f051e2005-04-17 15:02:26 -0500365 spin_lock_irqsave(&ha->hardware_lock, flags);
366 qla2x00_process_response_queue(ha);
367 spin_unlock_irqrestore(&ha->hardware_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 }
369
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 spin_lock_irq(ha->host->host_lock);
371
f4f051e2005-04-17 15:02:26 -0500372 return 0;
373
374qc_host_busy_free_sp:
375 qla2x00_sp_free_dma(ha, sp);
376 CMD_SP(cmd) = NULL;
377 mempool_free(sp, ha->srb_mempool);
378
379qc_host_busy_lock:
380 spin_lock_irq(ha->host->host_lock);
381
382qc_host_busy:
383 return SCSI_MLQUEUE_HOST_BUSY;
384
385qc_fail_command:
386 done(cmd);
387
388 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389}
390
391/*
392 * qla2x00_eh_wait_on_command
393 * Waits for the command to be returned by the Firmware for some
394 * max time.
395 *
396 * Input:
397 * ha = actual ha whose done queue will contain the command
398 * returned by firmware.
399 * cmd = Scsi Command to wait on.
400 * flag = Abort/Reset(Bus or Device Reset)
401 *
402 * Return:
403 * Not Found : 0
404 * Found : 1
405 */
406static int
407qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
408{
409#define ABORT_POLLING_PERIOD HZ
f4f051e2005-04-17 15:02:26 -0500410#define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
411 unsigned long wait_iter = ABORT_WAIT_ITER;
412 int ret = QLA_SUCCESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413
f4f051e2005-04-17 15:02:26 -0500414 while (CMD_SP(cmd)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 set_current_state(TASK_UNINTERRUPTIBLE);
416 schedule_timeout(ABORT_POLLING_PERIOD);
417
f4f051e2005-04-17 15:02:26 -0500418 if (--wait_iter)
419 break;
420 }
421 if (CMD_SP(cmd))
422 ret = QLA_FUNCTION_FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423
f4f051e2005-04-17 15:02:26 -0500424 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425}
426
427/*
428 * qla2x00_wait_for_hba_online
429 * Wait till the HBA is online after going through
430 * <= MAX_RETRIES_OF_ISP_ABORT or
431 * finally HBA is disabled ie marked offline
432 *
433 * Input:
434 * ha - pointer to host adapter structure
435 *
436 * Note:
437 * Does context switching-Release SPIN_LOCK
438 * (if any) before calling this routine.
439 *
440 * Return:
441 * Success (Adapter is online) : 0
442 * Failed (Adapter is offline/disabled) : 1
443 */
444static int
445qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
446{
447 int return_status;
448 unsigned long wait_online;
449
450 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
451 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
452 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
453 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
454 ha->dpc_active) && time_before(jiffies, wait_online)) {
455
456 msleep(1000);
457 }
458 if (ha->flags.online)
459 return_status = QLA_SUCCESS;
460 else
461 return_status = QLA_FUNCTION_FAILED;
462
463 DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
464
465 return (return_status);
466}
467
468/*
469 * qla2x00_wait_for_loop_ready
470 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
471 * to be in LOOP_READY state.
472 * Input:
473 * ha - pointer to host adapter structure
474 *
475 * Note:
476 * Does context switching-Release SPIN_LOCK
477 * (if any) before calling this routine.
478 *
479 *
480 * Return:
481 * Success (LOOP_READY) : 0
482 * Failed (LOOP_NOT_READY) : 1
483 */
484static inline int
485qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
486{
487 int return_status = QLA_SUCCESS;
488 unsigned long loop_timeout ;
489
490 /* wait for 5 min at the max for loop to be ready */
491 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
492
493 while ((!atomic_read(&ha->loop_down_timer) &&
494 atomic_read(&ha->loop_state) == LOOP_DOWN) ||
495 test_bit(CFG_ACTIVE, &ha->cfg_flags) ||
496 atomic_read(&ha->loop_state) != LOOP_READY) {
497 msleep(1000);
498 if (time_after_eq(jiffies, loop_timeout)) {
499 return_status = QLA_FUNCTION_FAILED;
500 break;
501 }
502 }
503 return (return_status);
504}
505
506/**************************************************************************
507* qla2xxx_eh_abort
508*
509* Description:
510* The abort function will abort the specified command.
511*
512* Input:
513* cmd = Linux SCSI command packet to be aborted.
514*
515* Returns:
516* Either SUCCESS or FAILED.
517*
518* Note:
519**************************************************************************/
520int
521qla2xxx_eh_abort(struct scsi_cmnd *cmd)
522{
f4f051e2005-04-17 15:02:26 -0500523 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
524 srb_t *sp;
525 int ret, i;
526 unsigned int id, lun;
527 unsigned long serial;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528
f4f051e2005-04-17 15:02:26 -0500529 if (!CMD_SP(cmd))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 return FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531
f4f051e2005-04-17 15:02:26 -0500532 ret = FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533
f4f051e2005-04-17 15:02:26 -0500534 id = cmd->device->id;
535 lun = cmd->device->lun;
536 serial = cmd->serial_number;
537
538 /* Check active list for command command. */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700539 spin_unlock_irq(ha->host->host_lock);
f4f051e2005-04-17 15:02:26 -0500540 spin_lock(&ha->hardware_lock);
541 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
542 sp = ha->outstanding_cmds[i];
543
544 if (sp == NULL)
545 continue;
546
547 if (sp->cmd != cmd)
548 continue;
549
550 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
551 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
552 sp->state));
553 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
554
555 spin_unlock(&ha->hardware_lock);
556 if (qla2x00_abort_command(ha, sp)) {
557 DEBUG2(printk("%s(%ld): abort_command "
558 "mbx failed.\n", __func__, ha->host_no));
559 } else {
560 DEBUG3(printk("%s(%ld): abort_command "
561 "mbx success.\n", __func__, ha->host_no));
562 ret = SUCCESS;
563 }
564 spin_lock(&ha->hardware_lock);
565
566 break;
567 }
568
569 /* Wait for the command to be returned. */
570 if (ret == SUCCESS) {
571 spin_unlock(&ha->hardware_lock);
572 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
573 qla_printk(KERN_ERR, ha,
574 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
575 "%x.\n", ha->host_no, id, lun, serial, ret);
576 }
577 spin_lock(&ha->hardware_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 }
579 spin_lock_irq(ha->host->host_lock);
580
f4f051e2005-04-17 15:02:26 -0500581 qla_printk(KERN_INFO, ha,
582 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
583 id, lun, serial, ret);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700584
f4f051e2005-04-17 15:02:26 -0500585 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586}
587
588/**************************************************************************
589* qla2x00_eh_wait_for_pending_target_commands
590*
591* Description:
592* Waits for all the commands to come back from the specified target.
593*
594* Input:
595* ha - pointer to scsi_qla_host structure.
596* t - target
597* Returns:
598* Either SUCCESS or FAILED.
599*
600* Note:
601**************************************************************************/
602static int
603qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
604{
605 int cnt;
606 int status;
607 srb_t *sp;
608 struct scsi_cmnd *cmd;
609
610 status = 0;
611
612 /*
613 * Waiting for all commands for the designated target in the active
614 * array
615 */
616 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
617 spin_lock(&ha->hardware_lock);
618 sp = ha->outstanding_cmds[cnt];
619 if (sp) {
620 cmd = sp->cmd;
621 spin_unlock(&ha->hardware_lock);
622 if (cmd->device->id == t) {
623 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
624 status = 1;
625 break;
626 }
627 }
f4f051e2005-04-17 15:02:26 -0500628 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 spin_unlock(&ha->hardware_lock);
630 }
631 }
632 return (status);
633}
634
635
636/**************************************************************************
637* qla2xxx_eh_device_reset
638*
639* Description:
640* The device reset function will reset the target and abort any
641* executing commands.
642*
643* NOTE: The use of SP is undefined within this context. Do *NOT*
644* attempt to use this value, even if you determine it is
645* non-null.
646*
647* Input:
648* cmd = Linux SCSI command packet of the command that cause the
649* bus device reset.
650*
651* Returns:
652* SUCCESS/FAILURE (defined as macro in scsi.h).
653*
654**************************************************************************/
655int
656qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
657{
f4f051e2005-04-17 15:02:26 -0500658 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79622005-04-17 15:06:53 -0500659 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051e2005-04-17 15:02:26 -0500660 srb_t *sp;
661 int ret;
662 unsigned int id, lun;
663 unsigned long serial;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664
f4f051e2005-04-17 15:02:26 -0500665 ret = FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666
f4f051e2005-04-17 15:02:26 -0500667 id = cmd->device->id;
668 lun = cmd->device->lun;
669 serial = cmd->serial_number;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670
f4f051e2005-04-17 15:02:26 -0500671 sp = (srb_t *) CMD_SP(cmd);
bdf79622005-04-17 15:06:53 -0500672 if (!sp || !fcport)
f4f051e2005-04-17 15:02:26 -0500673 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674
675 qla_printk(KERN_INFO, ha,
f4f051e2005-04-17 15:02:26 -0500676 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677
678 spin_unlock_irq(ha->host->host_lock);
679
680 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 spin_lock_irq(ha->host->host_lock);
682 goto eh_dev_reset_done;
683 }
684
685 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051e2005-04-17 15:02:26 -0500686 if (qla2x00_device_reset(ha, fcport) == 0)
687 ret = SUCCESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688
689#if defined(LOGOUT_AFTER_DEVICE_RESET)
f4f051e2005-04-17 15:02:26 -0500690 if (ret == SUCCESS) {
691 if (fcport->flags & FC_FABRIC_DEVICE) {
692 qla2x00_fabric_logout(ha, fcport->loop_id);
693 qla2x00_mark_device_lost(ha, fcport);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 }
695 }
696#endif
697 } else {
698 DEBUG2(printk(KERN_INFO
699 "%s failed: loop not ready\n",__func__);)
700 }
701
f4f051e2005-04-17 15:02:26 -0500702 if (ret == FAILED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700703 DEBUG3(printk("%s(%ld): device reset failed\n",
704 __func__, ha->host_no));
705 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
706 __func__);
707
708 goto eh_dev_reset_done;
709 }
710
711 /*
712 * If we are coming down the EH path, wait for all commands to
713 * complete for the device.
714 */
715 if (cmd->device->host->eh_active) {
f4f051e2005-04-17 15:02:26 -0500716 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
717 ret = FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718
f4f051e2005-04-17 15:02:26 -0500719 if (ret == FAILED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 DEBUG3(printk("%s(%ld): failed while waiting for "
721 "commands\n", __func__, ha->host_no));
722 qla_printk(KERN_INFO, ha,
723 "%s: failed while waiting for commands\n",
724 __func__);
725
726 goto eh_dev_reset_done;
727 }
728 }
729
730 qla_printk(KERN_INFO, ha,
f4f051e2005-04-17 15:02:26 -0500731 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732
733eh_dev_reset_done:
f4f051e2005-04-17 15:02:26 -0500734 spin_lock_irq(ha->host->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735
f4f051e2005-04-17 15:02:26 -0500736 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737}
738
739/**************************************************************************
740* qla2x00_eh_wait_for_pending_commands
741*
742* Description:
743* Waits for all the commands to come back from the specified host.
744*
745* Input:
746* ha - pointer to scsi_qla_host structure.
747*
748* Returns:
749* 1 : SUCCESS
750* 0 : FAILED
751*
752* Note:
753**************************************************************************/
754static int
755qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
756{
757 int cnt;
758 int status;
759 srb_t *sp;
760 struct scsi_cmnd *cmd;
761
762 status = 1;
763
764 /*
765 * Waiting for all commands for the designated target in the active
766 * array
767 */
768 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
769 spin_lock(&ha->hardware_lock);
770 sp = ha->outstanding_cmds[cnt];
771 if (sp) {
772 cmd = sp->cmd;
773 spin_unlock(&ha->hardware_lock);
774 status = qla2x00_eh_wait_on_command(ha, cmd);
775 if (status == 0)
776 break;
777 }
778 else {
779 spin_unlock(&ha->hardware_lock);
780 }
781 }
782 return (status);
783}
784
785
786/**************************************************************************
787* qla2xxx_eh_bus_reset
788*
789* Description:
790* The bus reset function will reset the bus and abort any executing
791* commands.
792*
793* Input:
794* cmd = Linux SCSI command packet of the command that cause the
795* bus reset.
796*
797* Returns:
798* SUCCESS/FAILURE (defined as macro in scsi.h).
799*
800**************************************************************************/
801int
802qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
803{
f4f051e2005-04-17 15:02:26 -0500804 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79622005-04-17 15:06:53 -0500805 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 srb_t *sp;
f4f051e2005-04-17 15:02:26 -0500807 int ret;
808 unsigned int id, lun;
809 unsigned long serial;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
f4f051e2005-04-17 15:02:26 -0500811 ret = FAILED;
812
813 id = cmd->device->id;
814 lun = cmd->device->lun;
815 serial = cmd->serial_number;
816
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 sp = (srb_t *) CMD_SP(cmd);
bdf79622005-04-17 15:06:53 -0500818 if (!sp || !fcport)
f4f051e2005-04-17 15:02:26 -0500819 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
821 qla_printk(KERN_INFO, ha,
f4f051e2005-04-17 15:02:26 -0500822 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823
824 spin_unlock_irq(ha->host->host_lock);
825
826 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
827 DEBUG2(printk("%s failed:board disabled\n",__func__));
f4f051e2005-04-17 15:02:26 -0500828 goto eh_bus_reset_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829 }
830
831 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051e2005-04-17 15:02:26 -0500832 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
833 ret = SUCCESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 }
f4f051e2005-04-17 15:02:26 -0500835 if (ret == FAILED)
836 goto eh_bus_reset_done;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837
838 /* Waiting for our command in done_queue to be returned to OS.*/
839 if (cmd->device->host->eh_active)
840 if (!qla2x00_eh_wait_for_pending_commands(ha))
f4f051e2005-04-17 15:02:26 -0500841 ret = FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842
f4f051e2005-04-17 15:02:26 -0500843eh_bus_reset_done:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700844 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
f4f051e2005-04-17 15:02:26 -0500845 (ret == FAILED) ? "failed" : "succeded");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846
f4f051e2005-04-17 15:02:26 -0500847 spin_lock_irq(ha->host->host_lock);
848
849 return ret;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850}
851
852/**************************************************************************
853* qla2xxx_eh_host_reset
854*
855* Description:
856* The reset function will reset the Adapter.
857*
858* Input:
859* cmd = Linux SCSI command packet of the command that cause the
860* adapter reset.
861*
862* Returns:
863* Either SUCCESS or FAILED.
864*
865* Note:
866**************************************************************************/
867int
868qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
869{
f4f051e2005-04-17 15:02:26 -0500870 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79622005-04-17 15:06:53 -0500871 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051e2005-04-17 15:02:26 -0500872 srb_t *sp;
873 int ret;
874 unsigned int id, lun;
875 unsigned long serial;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700876
f4f051e2005-04-17 15:02:26 -0500877 ret = FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700878
f4f051e2005-04-17 15:02:26 -0500879 id = cmd->device->id;
880 lun = cmd->device->lun;
881 serial = cmd->serial_number;
882
883 sp = (srb_t *) CMD_SP(cmd);
bdf79622005-04-17 15:06:53 -0500884 if (!sp || !fcport)
f4f051e2005-04-17 15:02:26 -0500885 return ret;
886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887 qla_printk(KERN_INFO, ha,
f4f051e2005-04-17 15:02:26 -0500888 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889
890 spin_unlock_irq(ha->host->host_lock);
891
892 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051e2005-04-17 15:02:26 -0500893 goto eh_host_reset_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894
895 /*
896 * Fixme-may be dpc thread is active and processing
897 * loop_resync,so wait a while for it to
898 * be completed and then issue big hammer.Otherwise
899 * it may cause I/O failure as big hammer marks the
900 * devices as lost kicking of the port_down_timer
901 * while dpc is stuck for the mailbox to complete.
902 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 qla2x00_wait_for_loop_ready(ha);
904 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
905 if (qla2x00_abort_isp(ha)) {
906 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
907 /* failed. schedule dpc to try */
908 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
909
910 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051e2005-04-17 15:02:26 -0500911 goto eh_host_reset_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700912 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700913 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
914
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915 /* Waiting for our command in done_queue to be returned to OS.*/
f4f051e2005-04-17 15:02:26 -0500916 if (qla2x00_eh_wait_for_pending_commands(ha))
917 ret = SUCCESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700918
f4f051e2005-04-17 15:02:26 -0500919eh_host_reset_lock:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920 spin_lock_irq(ha->host->host_lock);
921
f4f051e2005-04-17 15:02:26 -0500922 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
923 (ret == FAILED) ? "failed" : "succeded");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924
f4f051e2005-04-17 15:02:26 -0500925 return ret;
926}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927
928/*
929* qla2x00_loop_reset
930* Issue loop reset.
931*
932* Input:
933* ha = adapter block pointer.
934*
935* Returns:
936* 0 = success
937*/
938static int
939qla2x00_loop_reset(scsi_qla_host_t *ha)
940{
941 int status = QLA_SUCCESS;
bdf79622005-04-17 15:06:53 -0500942 struct fc_port *fcport;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943
944 if (ha->flags.enable_lip_reset) {
945 status = qla2x00_lip_reset(ha);
946 }
947
948 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
bdf79622005-04-17 15:06:53 -0500949 list_for_each_entry(fcport, &ha->fcports, list) {
950 if (fcport->port_type != FCT_TARGET)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 continue;
952
bdf79622005-04-17 15:06:53 -0500953 status = qla2x00_target_reset(ha, fcport);
954 if (status != QLA_SUCCESS)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700955 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 }
957 }
958
959 if (status == QLA_SUCCESS &&
960 ((!ha->flags.enable_target_reset &&
961 !ha->flags.enable_lip_reset) ||
962 ha->flags.enable_lip_full_login)) {
963
964 status = qla2x00_full_login_lip(ha);
965 }
966
967 /* Issue marker command only when we are going to start the I/O */
968 ha->marker_needed = 1;
969
970 if (status) {
971 /* Empty */
972 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
973 __func__,
974 ha->host_no);)
975 } else {
976 /* Empty */
977 DEBUG3(printk("%s(%ld): exiting normally.\n",
978 __func__,
979 ha->host_no);)
980 }
981
982 return(status);
983}
984
985/*
986 * qla2x00_device_reset
987 * Issue bus device reset message to the target.
988 *
989 * Input:
990 * ha = adapter block pointer.
991 * t = SCSI ID.
992 * TARGET_QUEUE_LOCK must be released.
993 * ADAPTER_STATE_LOCK must be released.
994 *
995 * Context:
996 * Kernel context.
997 */
998static int
999qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1000{
1001 /* Abort Target command will clear Reservation */
1002 return qla2x00_abort_target(reset_fcport);
1003}
1004
f4f051e2005-04-17 15:02:26 -05001005static int
1006qla2xxx_slave_alloc(struct scsi_device *sdev)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007{
1008 scsi_qla_host_t *ha = to_qla_host(sdev->host);
bdf79622005-04-17 15:06:53 -05001009 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1010 fc_port_t *fcport;
1011 int found;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012
bdf79622005-04-17 15:06:53 -05001013 if (!rport)
f4f051e2005-04-17 15:02:26 -05001014 return -ENXIO;
1015
bdf79622005-04-17 15:06:53 -05001016 found = 0;
1017 list_for_each_entry(fcport, &ha->fcports, list) {
1018 if (rport->port_name ==
1019 be64_to_cpu(*(uint64_t *)fcport->port_name)) {
1020 found++;
1021 break;
1022 }
1023
1024 }
1025 if (!found)
1026 return -ENXIO;
1027
1028 sdev->hostdata = fcport;
f4f051e2005-04-17 15:02:26 -05001029
1030 return 0;
1031}
1032
1033static int
1034qla2xxx_slave_configure(struct scsi_device *sdev)
1035{
8482e1182005-04-17 15:04:54 -05001036 scsi_qla_host_t *ha = to_qla_host(sdev->host);
1037 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1038
f4f051e2005-04-17 15:02:26 -05001039 if (sdev->tagged_supported)
1040 scsi_activate_tcq(sdev, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 else
f4f051e2005-04-17 15:02:26 -05001042 scsi_deactivate_tcq(sdev, 32);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043
8482e1182005-04-17 15:04:54 -05001044 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1045
f4f051e2005-04-17 15:02:26 -05001046 return 0;
1047}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001048
f4f051e2005-04-17 15:02:26 -05001049static void
1050qla2xxx_slave_destroy(struct scsi_device *sdev)
1051{
1052 sdev->hostdata = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001053}
1054
1055/**
1056 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1057 * @ha: HA context
1058 *
1059 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1060 * supported addressing method.
1061 */
1062static void
1063qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1064{
1065 /* Assume 32bit DMA address */
1066 ha->flags.enable_64bit_addressing = 0;
1067 ha->calc_request_entries = qla2x00_calc_iocbs_32;
1068 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_32;
1069
1070 /*
1071 * Given the two variants pci_set_dma_mask(), allow the compiler to
1072 * assist in setting the proper dma mask.
1073 */
1074 if (sizeof(dma_addr_t) > 4) {
1075 if (pci_set_dma_mask(ha->pdev, DMA_64BIT_MASK) == 0) {
1076 ha->flags.enable_64bit_addressing = 1;
1077 ha->calc_request_entries = qla2x00_calc_iocbs_64;
1078 ha->build_scsi_iocbs = qla2x00_build_scsi_iocbs_64;
1079
1080 if (pci_set_consistent_dma_mask(ha->pdev,
1081 DMA_64BIT_MASK)) {
1082 qla_printk(KERN_DEBUG, ha,
1083 "Failed to set 64 bit PCI consistent mask; "
1084 "using 32 bit.\n");
1085 pci_set_consistent_dma_mask(ha->pdev,
1086 DMA_32BIT_MASK);
1087 }
1088 } else {
1089 qla_printk(KERN_DEBUG, ha,
1090 "Failed to set 64 bit PCI DMA mask, falling back "
1091 "to 32 bit MASK.\n");
1092 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1093 }
1094 } else {
1095 pci_set_dma_mask(ha->pdev, DMA_32BIT_MASK);
1096 }
1097}
1098
1099static int
1100qla2x00_iospace_config(scsi_qla_host_t *ha)
1101{
1102 unsigned long pio, pio_len, pio_flags;
1103 unsigned long mmio, mmio_len, mmio_flags;
1104
1105 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1106 pio = pci_resource_start(ha->pdev, 0);
1107 pio_len = pci_resource_len(ha->pdev, 0);
1108 pio_flags = pci_resource_flags(ha->pdev, 0);
1109 if (pio_flags & IORESOURCE_IO) {
1110 if (pio_len < MIN_IOBASE_LEN) {
1111 qla_printk(KERN_WARNING, ha,
1112 "Invalid PCI I/O region size (%s)...\n",
1113 pci_name(ha->pdev));
1114 pio = 0;
1115 }
1116 } else {
1117 qla_printk(KERN_WARNING, ha,
1118 "region #0 not a PIO resource (%s)...\n",
1119 pci_name(ha->pdev));
1120 pio = 0;
1121 }
1122
1123 /* Use MMIO operations for all accesses. */
1124 mmio = pci_resource_start(ha->pdev, 1);
1125 mmio_len = pci_resource_len(ha->pdev, 1);
1126 mmio_flags = pci_resource_flags(ha->pdev, 1);
1127
1128 if (!(mmio_flags & IORESOURCE_MEM)) {
1129 qla_printk(KERN_ERR, ha,
1130 "region #0 not an MMIO resource (%s), aborting\n",
1131 pci_name(ha->pdev));
1132 goto iospace_error_exit;
1133 }
1134 if (mmio_len < MIN_IOBASE_LEN) {
1135 qla_printk(KERN_ERR, ha,
1136 "Invalid PCI mem region size (%s), aborting\n",
1137 pci_name(ha->pdev));
1138 goto iospace_error_exit;
1139 }
1140
1141 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1142 qla_printk(KERN_WARNING, ha,
1143 "Failed to reserve PIO/MMIO regions (%s)\n",
1144 pci_name(ha->pdev));
1145
1146 goto iospace_error_exit;
1147 }
1148
1149 ha->pio_address = pio;
1150 ha->pio_length = pio_len;
1151 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1152 if (!ha->iobase) {
1153 qla_printk(KERN_ERR, ha,
1154 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1155
1156 goto iospace_error_exit;
1157 }
1158
1159 return (0);
1160
1161iospace_error_exit:
1162 return (-ENOMEM);
1163}
1164
1165/*
1166 * PCI driver interface
1167 */
1168int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1169{
1170 int ret;
1171 device_reg_t __iomem *reg;
1172 struct Scsi_Host *host;
1173 scsi_qla_host_t *ha;
1174 unsigned long flags = 0;
1175 unsigned long wait_switch = 0;
1176 char pci_info[20];
1177 char fw_str[30];
8482e1182005-04-17 15:04:54 -05001178 fc_port_t *fcport;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001179
1180 if (pci_enable_device(pdev))
1181 return -1;
1182
1183 host = scsi_host_alloc(&qla2x00_driver_template,
1184 sizeof(scsi_qla_host_t));
1185 if (host == NULL) {
1186 printk(KERN_WARNING
1187 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1188 goto probe_disable_device;
1189 }
1190
1191 /* Clear our data area */
1192 ha = (scsi_qla_host_t *)host->hostdata;
1193 memset(ha, 0, sizeof(scsi_qla_host_t));
1194
1195 ha->pdev = pdev;
1196 ha->host = host;
1197 ha->host_no = host->host_no;
1198 ha->brd_info = brd_info;
1199 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1200
1201 /* Configure PCI I/O space */
1202 ret = qla2x00_iospace_config(ha);
1203 if (ret != 0) {
8482e1182005-04-17 15:04:54 -05001204 goto probe_alloc_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 }
1206
1207 /* Sanitize the information from PCI BIOS. */
1208 host->irq = pdev->irq;
1209
1210 qla_printk(KERN_INFO, ha,
1211 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
1212 host->irq, ha->iobase);
1213
1214 spin_lock_init(&ha->hardware_lock);
1215
1216 /* 4.23 Initialize /proc/scsi/qla2x00 counters */
1217 ha->actthreads = 0;
1218 ha->qthreads = 0;
1219 ha->total_isr_cnt = 0;
1220 ha->total_isp_aborts = 0;
1221 ha->total_lip_cnt = 0;
1222 ha->total_dev_errs = 0;
1223 ha->total_ios = 0;
1224 ha->total_bytes = 0;
1225
1226 ha->prev_topology = 0;
1227 ha->ports = MAX_BUSES;
1228
1229 if (IS_QLA2100(ha)) {
1230 ha->max_targets = MAX_TARGETS_2100;
1231 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1232 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1233 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1234 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1235 host->sg_tablesize = 32;
1236 } else if (IS_QLA2200(ha)) {
1237 ha->max_targets = MAX_TARGETS_2200;
1238 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1239 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1240 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1241 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1242 } else /*if (IS_QLA2300(ha))*/ {
1243 ha->max_targets = MAX_TARGETS_2200;
1244 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1245 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1246 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1247 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1248 }
1249 host->can_queue = ha->request_q_length + 128;
1250
1251 /* load the F/W, read paramaters, and init the H/W */
1252 ha->instance = num_hosts;
1253
1254 init_MUTEX(&ha->mbx_cmd_sem);
1255 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1256
1257 INIT_LIST_HEAD(&ha->list);
1258 INIT_LIST_HEAD(&ha->fcports);
1259 INIT_LIST_HEAD(&ha->rscn_fcports);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260
1261 /*
1262 * These locks are used to prevent more than one CPU
1263 * from modifying the queue at the same time. The
1264 * higher level "host_lock" will reduce most
1265 * contention for these locks.
1266 */
1267 spin_lock_init(&ha->mbx_reg_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268
1269 ha->dpc_pid = -1;
1270 init_completion(&ha->dpc_inited);
1271 init_completion(&ha->dpc_exited);
1272
1273 qla2x00_config_dma_addressing(ha);
1274 if (qla2x00_mem_alloc(ha)) {
1275 qla_printk(KERN_WARNING, ha,
1276 "[ERROR] Failed to allocate memory for adapter\n");
1277
8482e1182005-04-17 15:04:54 -05001278 goto probe_alloc_failed;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001279 }
1280
8482e1182005-04-17 15:04:54 -05001281 pci_set_drvdata(pdev, ha);
1282 host->this_id = 255;
1283 host->cmd_per_lun = 3;
1284 host->unique_id = ha->instance;
1285 host->max_cmd_len = MAX_CMDSZ;
1286 host->max_channel = ha->ports - 1;
1287 host->max_id = ha->max_targets;
1288 host->max_lun = ha->max_luns;
1289 host->transportt = qla2xxx_transport_template;
1290 if (scsi_add_host(host, &pdev->dev))
1291 goto probe_alloc_failed;
1292
1293 qla2x00_alloc_sysfs_attr(ha);
1294
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 if (qla2x00_initialize_adapter(ha) &&
1296 !(ha->device_flags & DFLG_NO_CABLE)) {
1297
1298 qla_printk(KERN_WARNING, ha,
1299 "Failed to initialize adapter\n");
1300
1301 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1302 "Adapter flags %x.\n",
1303 ha->host_no, ha->device_flags));
1304
1305 goto probe_failed;
1306 }
1307
8482e1182005-04-17 15:04:54 -05001308 qla2x00_init_host_attr(ha);
bdf79622005-04-17 15:06:53 -05001309
Linus Torvalds1da177e2005-04-16 15:20:36 -07001310 /*
1311 * Startup the kernel thread for this host adapter
1312 */
1313 ha->dpc_should_die = 0;
1314 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1315 if (ha->dpc_pid < 0) {
1316 qla_printk(KERN_WARNING, ha,
1317 "Unable to start DPC thread!\n");
1318
1319 goto probe_failed;
1320 }
1321 wait_for_completion(&ha->dpc_inited);
1322
Linus Torvalds1da177e2005-04-16 15:20:36 -07001323 if (IS_QLA2100(ha) || IS_QLA2200(ha))
1324 ret = request_irq(host->irq, qla2100_intr_handler,
1325 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1326 else
1327 ret = request_irq(host->irq, qla2300_intr_handler,
1328 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
1329 if (ret != 0) {
1330 qla_printk(KERN_WARNING, ha,
1331 "Failed to reserve interrupt %d already in use.\n",
1332 host->irq);
1333 goto probe_failed;
1334 }
1335
1336 /* Initialized the timer */
1337 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1338
1339 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1340 ha->host_no, ha));
1341
1342 reg = ha->iobase;
1343
1344 /* Disable ISP interrupts. */
1345 qla2x00_disable_intrs(ha);
1346
1347 /* Ensure mailbox registers are free. */
1348 spin_lock_irqsave(&ha->hardware_lock, flags);
1349 WRT_REG_WORD(&reg->semaphore, 0);
1350 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
1351 WRT_REG_WORD(&reg->hccr, HCCR_CLR_HOST_INT);
1352
1353 /* Enable proper parity */
1354 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1355 if (IS_QLA2300(ha))
1356 /* SRAM parity */
1357 WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x1));
1358 else
1359 /* SRAM, Instruction RAM and GP RAM parity */
1360 WRT_REG_WORD(&reg->hccr, (HCCR_ENABLE_PARITY + 0x7));
1361 }
1362 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1363
1364 /* Enable chip interrupts. */
1365 qla2x00_enable_intrs(ha);
1366
1367 /* v2.19.5b6 */
1368 /*
1369 * Wait around max loop_reset_delay secs for the devices to come
1370 * on-line. We don't want Linux scanning before we are ready.
1371 *
1372 */
1373 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1374 time_before(jiffies,wait_switch) &&
1375 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1376 && (ha->device_flags & SWITCH_FOUND) ;) {
1377
1378 qla2x00_check_fabric_devices(ha);
1379
1380 msleep(10);
1381 }
1382
Linus Torvalds1da177e2005-04-16 15:20:36 -07001383 ha->flags.init_done = 1;
1384 num_hosts++;
1385
Linus Torvalds1da177e2005-04-16 15:20:36 -07001386 qla_printk(KERN_INFO, ha, "\n"
1387 " QLogic Fibre Channel HBA Driver: %s\n"
1388 " QLogic %s - %s\n"
1389 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1390 ha->model_number, ha->model_desc ? ha->model_desc: "",
1391 ha->brd_info->isp_name, qla2x00_get_pci_info_str(ha, pci_info),
1392 pci_name(ha->pdev), ha->flags.enable_64bit_addressing ? '+': '-',
1393 ha->host_no, qla2x00_get_fw_version_str(ha, fw_str));
1394
8482e1182005-04-17 15:04:54 -05001395 /* Go with fc_rport registration. */
1396 list_for_each_entry(fcport, &ha->fcports, list)
1397 qla2x00_reg_remote_port(ha, fcport);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001398
1399 return 0;
1400
1401probe_failed:
bdf79622005-04-17 15:06:53 -05001402 fc_remove_host(ha->host);
1403
8482e1182005-04-17 15:04:54 -05001404 scsi_remove_host(host);
1405
1406probe_alloc_failed:
Linus Torvalds1da177e2005-04-16 15:20:36 -07001407 qla2x00_free_device(ha);
1408
1409 scsi_host_put(host);
1410
1411probe_disable_device:
1412 pci_disable_device(pdev);
1413
1414 return -1;
1415}
1416EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1417
1418void qla2x00_remove_one(struct pci_dev *pdev)
1419{
1420 scsi_qla_host_t *ha;
1421
1422 ha = pci_get_drvdata(pdev);
1423
8482e1182005-04-17 15:04:54 -05001424 qla2x00_free_sysfs_attr(ha);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001425
bdf79622005-04-17 15:06:53 -05001426 fc_remove_host(ha->host);
1427
Linus Torvalds1da177e2005-04-16 15:20:36 -07001428 scsi_remove_host(ha->host);
1429
1430 qla2x00_free_device(ha);
1431
1432 scsi_host_put(ha->host);
1433
1434 pci_set_drvdata(pdev, NULL);
1435}
1436EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1437
1438static void
1439qla2x00_free_device(scsi_qla_host_t *ha)
1440{
1441 int ret;
1442
1443 /* Abort any outstanding IO descriptors. */
1444 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1445 qla2x00_cancel_io_descriptors(ha);
1446
1447 /* turn-off interrupts on the card */
1448 if (ha->interrupts_on)
1449 qla2x00_disable_intrs(ha);
1450
1451 /* Disable timer */
1452 if (ha->timer_active)
1453 qla2x00_stop_timer(ha);
1454
1455 /* Kill the kernel thread for this host */
1456 if (ha->dpc_pid >= 0) {
1457 ha->dpc_should_die = 1;
1458 wmb();
1459 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1460 if (ret) {
1461 qla_printk(KERN_ERR, ha,
1462 "Unable to signal DPC thread -- (%d)\n", ret);
1463
1464 /* TODO: SOMETHING MORE??? */
1465 } else {
1466 wait_for_completion(&ha->dpc_exited);
1467 }
1468 }
1469
1470 qla2x00_mem_free(ha);
1471
1472
1473 ha->flags.online = 0;
1474
1475 /* Detach interrupts */
1476 if (ha->pdev->irq)
1477 free_irq(ha->pdev->irq, ha);
1478
1479 /* release io space registers */
1480 if (ha->iobase)
1481 iounmap(ha->iobase);
1482 pci_release_regions(ha->pdev);
1483
1484 pci_disable_device(ha->pdev);
1485}
1486
1487
1488/*
1489 * The following support functions are adopted to handle
1490 * the re-entrant qla2x00_proc_info correctly.
1491 */
1492static void
1493copy_mem_info(struct info_str *info, char *data, int len)
1494{
1495 if (info->pos + len > info->offset + info->length)
1496 len = info->offset + info->length - info->pos;
1497
1498 if (info->pos + len < info->offset) {
1499 info->pos += len;
1500 return;
1501 }
1502
1503 if (info->pos < info->offset) {
1504 off_t partial;
1505
1506 partial = info->offset - info->pos;
1507 data += partial;
1508 info->pos += partial;
1509 len -= partial;
1510 }
1511
1512 if (len > 0) {
1513 memcpy(info->buffer, data, len);
1514 info->pos += len;
1515 info->buffer += len;
1516 }
1517}
1518
1519static int
1520copy_info(struct info_str *info, char *fmt, ...)
1521{
1522 va_list args;
1523 char buf[256];
1524 int len;
1525
1526 va_start(args, fmt);
1527 len = vsprintf(buf, fmt, args);
1528 va_end(args);
1529
1530 copy_mem_info(info, buf, len);
1531
1532 return (len);
1533}
1534
1535/*************************************************************************
1536* qla2x00_proc_info
1537*
1538* Description:
1539* Return information to handle /proc support for the driver.
1540*
1541* inout : decides the direction of the dataflow and the meaning of the
1542* variables
1543* buffer: If inout==0 data is being written to it else read from it
1544* (ptr to a page buffer)
1545* *start: If inout==0 start of the valid data in the buffer
1546* offset: If inout==0 starting offset from the beginning of all
1547* possible data to return.
1548* length: If inout==0 max number of bytes to be written into the buffer
1549* else number of bytes in "buffer"
1550* Returns:
1551* < 0: error. errno value.
1552* >= 0: sizeof data returned.
1553*************************************************************************/
1554int
1555qla2x00_proc_info(struct Scsi_Host *shost, char *buffer,
1556 char **start, off_t offset, int length, int inout)
1557{
1558 struct info_str info;
1559 int retval = -EINVAL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001560 uint32_t tmp_sn;
1561 uint32_t *flags;
1562 uint8_t *loop_state;
1563 scsi_qla_host_t *ha;
1564 char fw_info[30];
1565
1566 DEBUG3(printk(KERN_INFO
1567 "Entering proc_info buff_in=%p, offset=0x%lx, length=0x%x\n",
1568 buffer, offset, length);)
1569
1570 ha = (scsi_qla_host_t *) shost->hostdata;
1571
1572 if (inout) {
1573 /* Has data been written to the file? */
1574 DEBUG3(printk(
1575 "%s: has data been written to the file. \n",
1576 __func__);)
1577
1578 return -ENOSYS;
1579 }
1580
1581 if (start) {
1582 *start = buffer;
1583 }
1584
1585 info.buffer = buffer;
1586 info.length = length;
1587 info.offset = offset;
1588 info.pos = 0;
1589
1590 /* start building the print buffer */
1591 copy_info(&info,
1592 "QLogic PCI to Fibre Channel Host Adapter for %s:\n"
1593 " Firmware version %s, ",
1594 ha->model_number, qla2x00_get_fw_version_str(ha, fw_info));
1595
1596 copy_info(&info, "Driver version %s\n", qla2x00_version_str);
1597
1598 tmp_sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) |
1599 ha->serial1;
1600 copy_info(&info, "ISP: %s, Serial# %c%05d\n",
1601 ha->brd_info->isp_name, ('A' + tmp_sn/100000), (tmp_sn%100000));
1602
1603 copy_info(&info,
1604 "Request Queue = 0x%llx, Response Queue = 0x%llx\n",
1605 (unsigned long long)ha->request_dma,
1606 (unsigned long long)ha->response_dma);
1607
1608 copy_info(&info,
1609 "Request Queue count = %d, Response Queue count = %d\n",
1610 ha->request_q_length, ha->response_q_length);
1611
1612 copy_info(&info,
1613 "Total number of active commands = %ld\n",
1614 ha->actthreads);
1615
1616 copy_info(&info,
1617 "Total number of interrupts = %ld\n",
1618 (long)ha->total_isr_cnt);
1619
1620 copy_info(&info,
1621 " Device queue depth = 0x%x\n",
1622 (ql2xmaxqdepth == 0) ? 16 : ql2xmaxqdepth);
1623
1624 copy_info(&info,
1625 "Number of free request entries = %d\n", ha->req_q_cnt);
1626
1627 copy_info(&info,
1628 "Number of mailbox timeouts = %ld\n", ha->total_mbx_timeout);
1629
1630 copy_info(&info,
1631 "Number of ISP aborts = %ld\n", ha->total_isp_aborts);
1632
1633 copy_info(&info,
1634 "Number of loop resyncs = %ld\n", ha->total_loop_resync);
1635
1636 copy_info(&info,
1637 "Number of retries for empty slots = %ld\n",
1638 qla2x00_stats.outarray_full);
1639
Linus Torvalds1da177e2005-04-16 15:20:36 -07001640 flags = (uint32_t *) &ha->flags;
1641
1642 if (atomic_read(&ha->loop_state) == LOOP_DOWN) {
1643 loop_state = "DOWN";
1644 } else if (atomic_read(&ha->loop_state) == LOOP_UP) {
1645 loop_state = "UP";
1646 } else if (atomic_read(&ha->loop_state) == LOOP_READY) {
1647 loop_state = "READY";
1648 } else if (atomic_read(&ha->loop_state) == LOOP_TIMEOUT) {
1649 loop_state = "TIMEOUT";
1650 } else if (atomic_read(&ha->loop_state) == LOOP_UPDATE) {
1651 loop_state = "UPDATE";
1652 } else {
1653 loop_state = "UNKNOWN";
1654 }
1655
1656 copy_info(&info,
1657 "Host adapter:loop state = <%s>, flags = 0x%lx\n",
1658 loop_state , *flags);
1659
1660 copy_info(&info, "Dpc flags = 0x%lx\n", ha->dpc_flags);
1661
1662 copy_info(&info, "MBX flags = 0x%x\n", ha->mbx_flags);
1663
1664 copy_info(&info, "Link down Timeout = %3.3d\n",
1665 ha->link_down_timeout);
1666
1667 copy_info(&info, "Port down retry = %3.3d\n",
1668 ha->port_down_retry_count);
1669
1670 copy_info(&info, "Login retry count = %3.3d\n",
1671 ha->login_retry_count);
1672
1673 copy_info(&info,
1674 "Commands retried with dropped frame(s) = %d\n",
1675 ha->dropped_frame_error_cnt);
1676
1677 copy_info(&info,
1678 "Product ID = %04x %04x %04x %04x\n", ha->product_id[0],
1679 ha->product_id[1], ha->product_id[2], ha->product_id[3]);
1680
1681 copy_info(&info, "\n");
1682
1683 /* 2.25 node/port display to proc */
1684 /* Display the node name for adapter */
1685 copy_info(&info, "\nSCSI Device Information:\n");
1686 copy_info(&info,
1687 "scsi-qla%d-adapter-node="
1688 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
1689 (int)ha->instance,
1690 ha->init_cb->node_name[0],
1691 ha->init_cb->node_name[1],
1692 ha->init_cb->node_name[2],
1693 ha->init_cb->node_name[3],
1694 ha->init_cb->node_name[4],
1695 ha->init_cb->node_name[5],
1696 ha->init_cb->node_name[6],
1697 ha->init_cb->node_name[7]);
1698
1699 /* display the port name for adapter */
1700 copy_info(&info,
1701 "scsi-qla%d-adapter-port="
1702 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
1703 (int)ha->instance,
1704 ha->init_cb->port_name[0],
1705 ha->init_cb->port_name[1],
1706 ha->init_cb->port_name[2],
1707 ha->init_cb->port_name[3],
1708 ha->init_cb->port_name[4],
1709 ha->init_cb->port_name[5],
1710 ha->init_cb->port_name[6],
1711 ha->init_cb->port_name[7]);
1712
Linus Torvalds1da177e2005-04-16 15:20:36 -07001713 retval = info.pos > info.offset ? info.pos - info.offset : 0;
1714
1715 DEBUG3(printk(KERN_INFO
1716 "Exiting proc_info: info.pos=%d, offset=0x%lx, "
1717 "length=0x%x\n", info.pos, offset, length);)
1718
1719 return (retval);
1720}
1721
1722/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1724 *
1725 * Input: ha = adapter block pointer. fcport = port structure pointer.
1726 *
1727 * Return: None.
1728 *
1729 * Context:
1730 */
1731void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1732 int do_login)
1733{
8482e1182005-04-17 15:04:54 -05001734 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1735 fc_remote_port_block(fcport->rport);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001736 /*
1737 * We may need to retry the login, so don't change the state of the
1738 * port but do the retries.
1739 */
1740 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1741 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1742
1743 if (!do_login)
1744 return;
1745
1746 if (fcport->login_retry == 0) {
1747 fcport->login_retry = ha->login_retry_count;
1748 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1749
1750 DEBUG(printk("scsi(%ld): Port login retry: "
1751 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1752 "id = 0x%04x retry cnt=%d\n",
1753 ha->host_no,
1754 fcport->port_name[0],
1755 fcport->port_name[1],
1756 fcport->port_name[2],
1757 fcport->port_name[3],
1758 fcport->port_name[4],
1759 fcport->port_name[5],
1760 fcport->port_name[6],
1761 fcport->port_name[7],
1762 fcport->loop_id,
1763 fcport->login_retry));
1764 }
1765}
1766
1767/*
1768 * qla2x00_mark_all_devices_lost
1769 * Updates fcport state when device goes offline.
1770 *
1771 * Input:
1772 * ha = adapter block pointer.
1773 * fcport = port structure pointer.
1774 *
1775 * Return:
1776 * None.
1777 *
1778 * Context:
1779 */
1780void
1781qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1782{
1783 fc_port_t *fcport;
1784
1785 list_for_each_entry(fcport, &ha->fcports, list) {
1786 if (fcport->port_type != FCT_TARGET)
1787 continue;
1788
1789 /*
1790 * No point in marking the device as lost, if the device is
1791 * already DEAD.
1792 */
1793 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1794 continue;
8482e1182005-04-17 15:04:54 -05001795 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1796 fc_remote_port_block(fcport->rport);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001797 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1798 }
1799}
1800
1801/*
1802* qla2x00_mem_alloc
1803* Allocates adapter memory.
1804*
1805* Returns:
1806* 0 = success.
1807* 1 = failure.
1808*/
1809static uint8_t
1810qla2x00_mem_alloc(scsi_qla_host_t *ha)
1811{
1812 char name[16];
1813 uint8_t status = 1;
1814 int retry= 10;
1815
1816 do {
1817 /*
1818 * This will loop only once if everything goes well, else some
1819 * number of retries will be performed to get around a kernel
1820 * bug where available mem is not allocated until after a
1821 * little delay and a retry.
1822 */
1823 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1824 (ha->request_q_length + 1) * sizeof(request_t),
1825 &ha->request_dma, GFP_KERNEL);
1826 if (ha->request_ring == NULL) {
1827 qla_printk(KERN_WARNING, ha,
1828 "Memory Allocation failed - request_ring\n");
1829
1830 qla2x00_mem_free(ha);
1831 msleep(100);
1832
1833 continue;
1834 }
1835
1836 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1837 (ha->response_q_length + 1) * sizeof(response_t),
1838 &ha->response_dma, GFP_KERNEL);
1839 if (ha->response_ring == NULL) {
1840 qla_printk(KERN_WARNING, ha,
1841 "Memory Allocation failed - response_ring\n");
1842
1843 qla2x00_mem_free(ha);
1844 msleep(100);
1845
1846 continue;
1847 }
1848
1849 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1850 &ha->gid_list_dma, GFP_KERNEL);
1851 if (ha->gid_list == NULL) {
1852 qla_printk(KERN_WARNING, ha,
1853 "Memory Allocation failed - gid_list\n");
1854
1855 qla2x00_mem_free(ha);
1856 msleep(100);
1857
1858 continue;
1859 }
1860
1861 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1862 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1863 if (ha->rlc_rsp == NULL) {
1864 qla_printk(KERN_WARNING, ha,
1865 "Memory Allocation failed - rlc");
1866
1867 qla2x00_mem_free(ha);
1868 msleep(100);
1869
1870 continue;
1871 }
1872
1873 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1874 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1875 DMA_POOL_SIZE, 8, 0);
1876 if (ha->s_dma_pool == NULL) {
1877 qla_printk(KERN_WARNING, ha,
1878 "Memory Allocation failed - s_dma_pool\n");
1879
1880 qla2x00_mem_free(ha);
1881 msleep(100);
1882
1883 continue;
1884 }
1885
1886 /* get consistent memory allocated for init control block */
1887 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1888 &ha->init_cb_dma);
1889 if (ha->init_cb == NULL) {
1890 qla_printk(KERN_WARNING, ha,
1891 "Memory Allocation failed - init_cb\n");
1892
1893 qla2x00_mem_free(ha);
1894 msleep(100);
1895
1896 continue;
1897 }
1898 memset(ha->init_cb, 0, sizeof(init_cb_t));
1899
1900 /* Get consistent memory allocated for Get Port Database cmd */
1901 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1902 &ha->iodesc_pd_dma);
1903 if (ha->iodesc_pd == NULL) {
1904 /* error */
1905 qla_printk(KERN_WARNING, ha,
1906 "Memory Allocation failed - iodesc_pd\n");
1907
1908 qla2x00_mem_free(ha);
1909 msleep(100);
1910
1911 continue;
1912 }
1913 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1914
1915 /* Allocate ioctl related memory. */
1916 if (qla2x00_alloc_ioctl_mem(ha)) {
1917 qla_printk(KERN_WARNING, ha,
1918 "Memory Allocation failed - ioctl_mem\n");
1919
1920 qla2x00_mem_free(ha);
1921 msleep(100);
1922
1923 continue;
1924 }
1925
1926 if (qla2x00_allocate_sp_pool(ha)) {
1927 qla_printk(KERN_WARNING, ha,
1928 "Memory Allocation failed - "
1929 "qla2x00_allocate_sp_pool()\n");
1930
1931 qla2x00_mem_free(ha);
1932 msleep(100);
1933
1934 continue;
1935 }
1936
1937 /* Allocate memory for SNS commands */
1938 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1939 /* Get consistent memory allocated for SNS commands */
1940 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1941 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1942 GFP_KERNEL);
1943 if (ha->sns_cmd == NULL) {
1944 /* error */
1945 qla_printk(KERN_WARNING, ha,
1946 "Memory Allocation failed - sns_cmd\n");
1947
1948 qla2x00_mem_free(ha);
1949 msleep(100);
1950
1951 continue;
1952 }
1953 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1954 } else {
1955 /* Get consistent memory allocated for MS IOCB */
1956 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1957 &ha->ms_iocb_dma);
1958 if (ha->ms_iocb == NULL) {
1959 /* error */
1960 qla_printk(KERN_WARNING, ha,
1961 "Memory Allocation failed - ms_iocb\n");
1962
1963 qla2x00_mem_free(ha);
1964 msleep(100);
1965
1966 continue;
1967 }
1968 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1969
1970 /*
1971 * Get consistent memory allocated for CT SNS
1972 * commands
1973 */
1974 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1975 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1976 GFP_KERNEL);
1977 if (ha->ct_sns == NULL) {
1978 /* error */
1979 qla_printk(KERN_WARNING, ha,
1980 "Memory Allocation failed - ct_sns\n");
1981
1982 qla2x00_mem_free(ha);
1983 msleep(100);
1984
1985 continue;
1986 }
1987 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1988 }
1989
1990 /* Done all allocations without any error. */
1991 status = 0;
1992
1993 } while (retry-- && status != 0);
1994
1995 if (status) {
1996 printk(KERN_WARNING
1997 "%s(): **** FAILED ****\n", __func__);
1998 }
1999
2000 return(status);
2001}
2002
2003/*
2004* qla2x00_mem_free
2005* Frees all adapter allocated memory.
2006*
2007* Input:
2008* ha = adapter block pointer.
2009*/
2010static void
2011qla2x00_mem_free(scsi_qla_host_t *ha)
2012{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002013 struct list_head *fcpl, *fcptemp;
2014 fc_port_t *fcport;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002015 unsigned long wtime;/* max wait time if mbx cmd is busy. */
2016
2017 if (ha == NULL) {
2018 /* error */
2019 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
2020 return;
2021 }
2022
Linus Torvalds1da177e2005-04-16 15:20:36 -07002023 /* Make sure all other threads are stopped. */
2024 wtime = 60 * HZ;
2025 while (ha->dpc_wait && wtime) {
2026 set_current_state(TASK_INTERRUPTIBLE);
2027 wtime = schedule_timeout(wtime);
2028 }
2029
2030 /* free ioctl memory */
2031 qla2x00_free_ioctl_mem(ha);
2032
2033 /* free sp pool */
2034 qla2x00_free_sp_pool(ha);
2035
2036 if (ha->sns_cmd)
2037 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
2038 ha->sns_cmd, ha->sns_cmd_dma);
2039
2040 if (ha->ct_sns)
2041 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
2042 ha->ct_sns, ha->ct_sns_dma);
2043
2044 if (ha->ms_iocb)
2045 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
2046
2047 if (ha->iodesc_pd)
2048 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
2049
2050 if (ha->init_cb)
2051 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2052
2053 if (ha->s_dma_pool)
2054 dma_pool_destroy(ha->s_dma_pool);
2055
2056 if (ha->rlc_rsp)
2057 dma_free_coherent(&ha->pdev->dev,
2058 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2059 ha->rlc_rsp_dma);
2060
2061 if (ha->gid_list)
2062 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2063 ha->gid_list_dma);
2064
2065 if (ha->response_ring)
2066 dma_free_coherent(&ha->pdev->dev,
2067 (ha->response_q_length + 1) * sizeof(response_t),
2068 ha->response_ring, ha->response_dma);
2069
2070 if (ha->request_ring)
2071 dma_free_coherent(&ha->pdev->dev,
2072 (ha->request_q_length + 1) * sizeof(request_t),
2073 ha->request_ring, ha->request_dma);
2074
2075 ha->sns_cmd = NULL;
2076 ha->sns_cmd_dma = 0;
2077 ha->ct_sns = NULL;
2078 ha->ct_sns_dma = 0;
2079 ha->ms_iocb = NULL;
2080 ha->ms_iocb_dma = 0;
2081 ha->iodesc_pd = NULL;
2082 ha->iodesc_pd_dma = 0;
2083 ha->init_cb = NULL;
2084 ha->init_cb_dma = 0;
2085
2086 ha->s_dma_pool = NULL;
2087
2088 ha->rlc_rsp = NULL;
2089 ha->rlc_rsp_dma = 0;
2090 ha->gid_list = NULL;
2091 ha->gid_list_dma = 0;
2092
2093 ha->response_ring = NULL;
2094 ha->response_dma = 0;
2095 ha->request_ring = NULL;
2096 ha->request_dma = 0;
2097
2098 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2099 fcport = list_entry(fcpl, fc_port_t, list);
2100
Linus Torvalds1da177e2005-04-16 15:20:36 -07002101 /* fc ports */
2102 list_del_init(&fcport->list);
2103 kfree(fcport);
2104 }
2105 INIT_LIST_HEAD(&ha->fcports);
2106
2107 if (ha->fw_dump)
2108 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2109
2110 if (ha->fw_dump_buffer)
2111 vfree(ha->fw_dump_buffer);
2112
2113 ha->fw_dump = NULL;
2114 ha->fw_dump_reading = 0;
2115 ha->fw_dump_buffer = NULL;
2116}
2117
2118/*
2119 * qla2x00_allocate_sp_pool
2120 * This routine is called during initialization to allocate
2121 * memory for local srb_t.
2122 *
2123 * Input:
2124 * ha = adapter block pointer.
2125 *
2126 * Context:
2127 * Kernel context.
2128 *
2129 * Note: Sets the ref_count for non Null sp to one.
2130 */
2131static int
2132qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
2133{
2134 int rval;
2135
2136 rval = QLA_SUCCESS;
2137 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2138 mempool_free_slab, srb_cachep);
2139 if (ha->srb_mempool == NULL) {
2140 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2141 rval = QLA_FUNCTION_FAILED;
2142 }
2143 return (rval);
2144}
2145
2146/*
2147 * This routine frees all adapter allocated memory.
2148 *
2149 */
2150static void
2151qla2x00_free_sp_pool( scsi_qla_host_t *ha)
2152{
2153 if (ha->srb_mempool) {
2154 mempool_destroy(ha->srb_mempool);
2155 ha->srb_mempool = NULL;
2156 }
2157}
2158
2159/**************************************************************************
2160* qla2x00_do_dpc
2161* This kernel thread is a task that is schedule by the interrupt handler
2162* to perform the background processing for interrupts.
2163*
2164* Notes:
2165* This task always run in the context of a kernel thread. It
2166* is kick-off by the driver's detect code and starts up
2167* up one per adapter. It immediately goes to sleep and waits for
2168* some fibre event. When either the interrupt handler or
2169* the timer routine detects a event it will one of the task
2170* bits then wake us up.
2171**************************************************************************/
2172static int
2173qla2x00_do_dpc(void *data)
2174{
2175 DECLARE_MUTEX_LOCKED(sem);
2176 scsi_qla_host_t *ha;
2177 fc_port_t *fcport;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002178 uint8_t status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002179 uint16_t next_loopid;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180
2181 ha = (scsi_qla_host_t *)data;
2182
2183 lock_kernel();
2184
2185 daemonize("%s_dpc", ha->host_str);
2186 allow_signal(SIGHUP);
2187
2188 ha->dpc_wait = &sem;
2189
2190 set_user_nice(current, -20);
2191
2192 unlock_kernel();
2193
2194 complete(&ha->dpc_inited);
2195
2196 while (1) {
2197 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2198
2199 if (down_interruptible(&sem))
2200 break;
2201
2202 if (ha->dpc_should_die)
2203 break;
2204
2205 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2206
2207 /* Initialization not yet finished. Don't do anything yet. */
2208 if (!ha->flags.init_done || ha->dpc_active)
2209 continue;
2210
2211 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2212
2213 ha->dpc_active = 1;
2214
Linus Torvalds1da177e2005-04-16 15:20:36 -07002215 if (ha->flags.mbox_busy) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002216 ha->dpc_active = 0;
2217 continue;
2218 }
2219
2220 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2221
2222 DEBUG(printk("scsi(%ld): dpc: sched "
2223 "qla2x00_abort_isp ha = %p\n",
2224 ha->host_no, ha));
2225 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2226 &ha->dpc_flags))) {
2227
2228 if (qla2x00_abort_isp(ha)) {
2229 /* failed. retry later */
2230 set_bit(ISP_ABORT_NEEDED,
2231 &ha->dpc_flags);
2232 }
2233 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2234 }
2235 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2236 ha->host_no));
2237 }
2238
2239 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2240 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2241
2242 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2243 ha->host_no));
2244
2245 qla2x00_rst_aen(ha);
2246 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2247 }
2248
2249 /* Retry each device up to login retry count */
2250 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2251 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2252 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2253
2254 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2255 ha->host_no));
2256
2257 next_loopid = 0;
2258 list_for_each_entry(fcport, &ha->fcports, list) {
2259 if (fcport->port_type != FCT_TARGET)
2260 continue;
2261
2262 /*
2263 * If the port is not ONLINE then try to login
2264 * to it if we haven't run out of retries.
2265 */
2266 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2267 fcport->login_retry) {
2268
2269 fcport->login_retry--;
2270 if (fcport->flags & FCF_FABRIC_DEVICE) {
2271 if (fcport->flags &
2272 FCF_TAPE_PRESENT)
2273 qla2x00_fabric_logout(
2274 ha,
2275 fcport->loop_id);
2276 status = qla2x00_fabric_login(
2277 ha, fcport, &next_loopid);
2278 } else
2279 status =
2280 qla2x00_local_device_login(
2281 ha, fcport->loop_id);
2282
2283 if (status == QLA_SUCCESS) {
2284 fcport->old_loop_id = fcport->loop_id;
2285
2286 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2287 ha->host_no, fcport->loop_id));
2288
2289 fcport->port_login_retry_count =
2290 ha->port_down_retry_count * PORT_RETRY_TIME;
2291 atomic_set(&fcport->state, FCS_ONLINE);
2292 atomic_set(&fcport->port_down_timer,
2293 ha->port_down_retry_count * PORT_RETRY_TIME);
2294
2295 fcport->login_retry = 0;
2296 } else if (status == 1) {
2297 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2298 /* retry the login again */
2299 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2300 ha->host_no,
2301 fcport->login_retry, fcport->loop_id));
2302 } else {
2303 fcport->login_retry = 0;
2304 }
2305 }
2306 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2307 break;
2308 }
2309 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2310 ha->host_no));
2311 }
2312
2313 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2314 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2315
2316 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2317 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2318 ha->host_no));
2319
2320 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2321
2322 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2323 ha->host_no));
2324 }
2325
2326 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2327
2328 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2329 ha->host_no));
2330
2331 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2332 &ha->dpc_flags))) {
2333
2334 qla2x00_loop_resync(ha);
2335
2336 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2337 }
2338
2339 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2340 ha->host_no));
2341 }
2342
Linus Torvalds1da177e2005-04-16 15:20:36 -07002343 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2344
2345 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2346 ha->host_no));
2347
2348 qla2x00_rescan_fcports(ha);
2349
2350 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2351 "end.\n",
2352 ha->host_no));
2353 }
2354
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355 if (!ha->interrupts_on)
2356 qla2x00_enable_intrs(ha);
2357
Linus Torvalds1da177e2005-04-16 15:20:36 -07002358 ha->dpc_active = 0;
2359 } /* End of while(1) */
2360
2361 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2362
2363 /*
2364 * Make sure that nobody tries to wake us up again.
2365 */
2366 ha->dpc_wait = NULL;
2367 ha->dpc_active = 0;
2368
2369 complete_and_exit(&ha->dpc_exited, 0);
2370}
2371
2372/*
Linus Torvalds1da177e2005-04-16 15:20:36 -07002373* qla2x00_rst_aen
2374* Processes asynchronous reset.
2375*
2376* Input:
2377* ha = adapter block pointer.
2378*/
2379static void
2380qla2x00_rst_aen(scsi_qla_host_t *ha)
2381{
2382 if (ha->flags.online && !ha->flags.reset_active &&
2383 !atomic_read(&ha->loop_down_timer) &&
2384 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2385 do {
2386 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2387
2388 /*
2389 * Issue marker command only when we are going to start
2390 * the I/O.
2391 */
2392 ha->marker_needed = 1;
2393 } while (!atomic_read(&ha->loop_down_timer) &&
2394 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2395 }
2396}
2397
2398
2399/*
2400 * This routine will allocate SP from the free queue
2401 * input:
2402 * scsi_qla_host_t *
2403 * output:
2404 * srb_t * or NULL
2405 */
2406static srb_t *
2407qla2x00_get_new_sp(scsi_qla_host_t *ha)
2408{
2409 srb_t *sp;
2410
2411 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
2412 if (sp)
2413 atomic_set(&sp->ref_count, 1);
2414 return (sp);
2415}
2416
f4f051e2005-04-17 15:02:26 -05002417static void
2418qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2419{
2420 struct scsi_cmnd *cmd = sp->cmd;
2421
2422 if (sp->flags & SRB_DMA_VALID) {
2423 if (cmd->use_sg) {
2424 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2425 cmd->use_sg, cmd->sc_data_direction);
2426 } else if (cmd->request_bufflen) {
2427 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2428 cmd->request_bufflen, cmd->sc_data_direction);
2429 }
2430 sp->flags &= ~SRB_DMA_VALID;
2431 }
2432}
2433
2434void
2435qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2436{
2437 struct scsi_cmnd *cmd = sp->cmd;
2438
2439 qla2x00_sp_free_dma(ha, sp);
2440
2441 CMD_SP(cmd) = NULL;
2442 mempool_free(sp, ha->srb_mempool);
2443
2444 cmd->scsi_done(cmd);
2445}
bdf79622005-04-17 15:06:53 -05002446
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447/**************************************************************************
2448* qla2x00_timer
2449*
2450* Description:
2451* One second timer
2452*
2453* Context: Interrupt
2454***************************************************************************/
2455static void
2456qla2x00_timer(scsi_qla_host_t *ha)
2457{
Linus Torvalds1da177e2005-04-16 15:20:36 -07002458 unsigned long cpu_flags = 0;
2459 fc_port_t *fcport;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002460 int start_dpc = 0;
2461 int index;
2462 srb_t *sp;
f4f051e2005-04-17 15:02:26 -05002463 int t;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002464
2465 /*
2466 * Ports - Port down timer.
2467 *
2468 * Whenever, a port is in the LOST state we start decrementing its port
2469 * down timer every second until it reaches zero. Once it reaches zero
2470 * the port it marked DEAD.
2471 */
2472 t = 0;
2473 list_for_each_entry(fcport, &ha->fcports, list) {
2474 if (fcport->port_type != FCT_TARGET)
2475 continue;
2476
2477 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2478
2479 if (atomic_read(&fcport->port_down_timer) == 0)
2480 continue;
2481
2482 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
2483 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
2484
2485 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2486 "%d remainning\n",
2487 ha->host_no,
2488 t, atomic_read(&fcport->port_down_timer)));
2489 }
2490 t++;
2491 } /* End of for fcport */
2492
Linus Torvalds1da177e2005-04-16 15:20:36 -07002493
2494 /* Loop down handler. */
2495 if (atomic_read(&ha->loop_down_timer) > 0 &&
2496 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2497
2498 if (atomic_read(&ha->loop_down_timer) ==
2499 ha->loop_down_abort_time) {
2500
2501 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2502 "queues before time expire\n",
2503 ha->host_no));
2504
2505 if (!IS_QLA2100(ha) && ha->link_down_timeout)
2506 atomic_set(&ha->loop_state, LOOP_DEAD);
2507
2508 /* Schedule an ISP abort to return any tape commands. */
2509 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2510 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2511 index++) {
bdf79622005-04-17 15:06:53 -05002512 fc_port_t *sfcp;
2513
Linus Torvalds1da177e2005-04-16 15:20:36 -07002514 sp = ha->outstanding_cmds[index];
2515 if (!sp)
2516 continue;
bdf79622005-04-17 15:06:53 -05002517 sfcp = sp->fcport;
2518 if (!(sfcp->flags & FCF_TAPE_PRESENT))
Linus Torvalds1da177e2005-04-16 15:20:36 -07002519 continue;
2520
2521 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2522 break;
2523 }
2524 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2525
2526 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2527 start_dpc++;
2528 }
2529
2530 /* if the loop has been down for 4 minutes, reinit adapter */
2531 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2532 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2533 "restarting queues.\n",
2534 ha->host_no));
2535
2536 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2537 start_dpc++;
2538
2539 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2540 DEBUG(printk("scsi(%ld): Loop down - "
2541 "aborting ISP.\n",
2542 ha->host_no));
2543 qla_printk(KERN_WARNING, ha,
2544 "Loop down - aborting ISP.\n");
2545
2546 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2547 }
2548 }
2549 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2550 ha->host_no,
2551 atomic_read(&ha->loop_down_timer)));
2552 }
2553
Linus Torvalds1da177e2005-04-16 15:20:36 -07002554 /* Schedule the DPC routine if needed */
2555 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2556 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2557 start_dpc ||
2558 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
f4f051e2005-04-17 15:02:26 -05002559 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
Linus Torvalds1da177e2005-04-16 15:20:36 -07002560 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2561 ha->dpc_wait && !ha->dpc_active) {
2562
2563 up(ha->dpc_wait);
2564 }
2565
2566 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2567}
2568
Linus Torvalds1da177e2005-04-16 15:20:36 -07002569/* XXX(hch): crude hack to emulate a down_timeout() */
2570int
2571qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2572{
2573 const unsigned int step = HZ/10;
2574
2575 do {
2576 if (!down_trylock(sema))
2577 return 0;
2578 set_current_state(TASK_INTERRUPTIBLE);
2579 if (schedule_timeout(step))
2580 break;
2581 } while ((timeout -= step) > 0);
2582
2583 return -ETIMEDOUT;
2584}
2585
Linus Torvalds1da177e2005-04-16 15:20:36 -07002586/**
2587 * qla2x00_module_init - Module initialization.
2588 **/
2589static int __init
2590qla2x00_module_init(void)
2591{
2592 /* Allocate cache for SRBs. */
2593 sprintf(srb_cachep_name, "qla2xxx_srbs");
2594 srb_cachep = kmem_cache_create(srb_cachep_name, sizeof(srb_t), 0,
2595 SLAB_HWCACHE_ALIGN, NULL, NULL);
2596 if (srb_cachep == NULL) {
2597 printk(KERN_ERR
2598 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2599 return -ENOMEM;
2600 }
2601
2602 /* Derive version string. */
2603 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2604#if DEBUG_QLA2100
2605 strcat(qla2x00_version_str, "-debug");
2606#endif
8482e1182005-04-17 15:04:54 -05002607 qla2xxx_transport_template = qla2x00_alloc_transport_tmpl();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002608 if (!qla2xxx_transport_template)
2609 return -ENODEV;
2610
2611 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
2612 return 0;
2613}
2614
2615/**
2616 * qla2x00_module_exit - Module cleanup.
2617 **/
2618static void __exit
2619qla2x00_module_exit(void)
2620{
2621 /* Free SRBs cache. */
2622 if (srb_cachep != NULL) {
2623 if (kmem_cache_destroy(srb_cachep) != 0) {
2624 printk(KERN_ERR
2625 "qla2xxx: Unable to free SRB cache...Memory pools "
2626 "still active?\n");
2627 }
2628 srb_cachep = NULL;
2629 }
2630
2631 fc_release_transport(qla2xxx_transport_template);
2632}
2633
2634module_init(qla2x00_module_init);
2635module_exit(qla2x00_module_exit);
2636
2637MODULE_AUTHOR("QLogic Corporation");
2638MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2639MODULE_LICENSE("GPL");
2640MODULE_VERSION(QLA2XXX_VERSION);