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[SCSI] qla2xxx: Remove redundant call to pci_unmap_sg().
[net-next-2.6.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
ae91193c 5 * Copyright (C) 2003-2005 QLogic Corporation
1da177e4
LT		 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 */
354d6b21 39static kmem_cache_t *srb_cachep;
1da177e4
LT		 40
41/*
42 * Ioctl related information.
43 */
354d6b21 44static int num_hosts;
1da177e4
LT		 45
46int ql2xlogintimeout = 20;
47module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
48MODULE_PARM_DESC(ql2xlogintimeout,
49 "Login timeout value in seconds.");
50
8482e118 51int qlport_down_retry = 30;
1da177e4
LT		 52module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
53MODULE_PARM_DESC(qlport_down_retry,
54 "Maximum number of command retries to a port that returns"
55 "a PORT-DOWN status.");
56
1da177e4
LT		 57int ql2xplogiabsentdevice;
58module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
59MODULE_PARM_DESC(ql2xplogiabsentdevice,
60 "Option to enable PLOGI to devices that are not present after "
61 "a Fabric scan. This is needed for several broken switches."
62 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
63
64int ql2xenablezio = 0;
65module_param(ql2xenablezio, int, S_IRUGO|S_IRUSR);
66MODULE_PARM_DESC(ql2xenablezio,
fa2a1ce5 67 "Option to enable ZIO:If 1 then enable it otherwise"
1da177e4
LT		 68 " use the default set in the NVRAM."
69 " Default is 0 : disabled");
70
71int ql2xintrdelaytimer = 10;
72module_param(ql2xintrdelaytimer, int, S_IRUGO|S_IRUSR);
73MODULE_PARM_DESC(ql2xintrdelaytimer,
74 "ZIO: Waiting time for Firmware before it generates an "
75 "interrupt to the host to notify completion of request.");
76
1da177e4
LT		 77int ql2xloginretrycount = 0;
78module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
79MODULE_PARM_DESC(ql2xloginretrycount,
80 "Specify an alternate value for the NVRAM login retry count.");
81
fca29703
AV		 82int ql2xfwloadbin;
83module_param(ql2xfwloadbin, int, S_IRUGO|S_IRUSR);
84MODULE_PARM_DESC(ql2xfwloadbin,
85 "Load ISP2xxx firmware image via hotplug.");
86
1da177e4
LT		 87static void qla2x00_free_device(scsi_qla_host_t *);
88
89static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
90
cca5335c
AV		 91int ql2xfdmienable;
92module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
93MODULE_PARM_DESC(ql2xfdmienable,
94 "Enables FDMI registratons "
95 "Default is 0 - no FDMI. 1 - perfom FDMI.");
96
1da177e4 97/*
fa2a1ce5 98 * SCSI host template entry points
1da177e4
LT		 99 */
100static int qla2xxx_slave_configure(struct scsi_device * device);
f4f051eb
AV		 101static int qla2xxx_slave_alloc(struct scsi_device *);
102static void qla2xxx_slave_destroy(struct scsi_device *);
1da177e4
LT		 103static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
104 void (*fn)(struct scsi_cmnd *));
fca29703
AV		 105static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
106 void (*fn)(struct scsi_cmnd *));
1da177e4
LT		 107static int qla2xxx_eh_abort(struct scsi_cmnd *);
108static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
109static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
110static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
111static int qla2x00_loop_reset(scsi_qla_host_t *ha);
112static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
113
1da177e4
LT		 114static struct scsi_host_template qla2x00_driver_template = {
115 .module = THIS_MODULE,
116 .name = "qla2xxx",
1da177e4
LT		 117 .queuecommand = qla2x00_queuecommand,
118
119 .eh_abort_handler = qla2xxx_eh_abort,
120 .eh_device_reset_handler = qla2xxx_eh_device_reset,
121 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
122 .eh_host_reset_handler = qla2xxx_eh_host_reset,
123
124 .slave_configure = qla2xxx_slave_configure,
125
f4f051eb
AV		 126 .slave_alloc = qla2xxx_slave_alloc,
127 .slave_destroy = qla2xxx_slave_destroy,
1da177e4
LT		 128 .this_id = -1,
129 .cmd_per_lun = 3,
130 .use_clustering = ENABLE_CLUSTERING,
131 .sg_tablesize = SG_ALL,
132
133 /*
134 * The RISC allows for each command to transfer (2^32-1) bytes of data,
135 * which equates to 0x800000 sectors.
136 */
137 .max_sectors = 0xFFFF,
138};
139
fca29703
AV		 140static struct scsi_host_template qla24xx_driver_template = {
141 .module = THIS_MODULE,
142 .name = "qla2xxx",
143 .queuecommand = qla24xx_queuecommand,
144
145 .eh_abort_handler = qla2xxx_eh_abort,
146 .eh_device_reset_handler = qla2xxx_eh_device_reset,
147 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
148 .eh_host_reset_handler = qla2xxx_eh_host_reset,
149
150 .slave_configure = qla2xxx_slave_configure,
151
152 .slave_alloc = qla2xxx_slave_alloc,
153 .slave_destroy = qla2xxx_slave_destroy,
154 .this_id = -1,
155 .cmd_per_lun = 3,
156 .use_clustering = ENABLE_CLUSTERING,
157 .sg_tablesize = SG_ALL,
158
159 .max_sectors = 0xFFFF,
160};
161
1da177e4
LT		 162static struct scsi_transport_template *qla2xxx_transport_template = NULL;
163
1da177e4
LT		 164/* TODO Convert to inlines
165 *
166 * Timer routines
167 */
168#define WATCH_INTERVAL 1 /* number of seconds */
169
170static void qla2x00_timer(scsi_qla_host_t *);
171
172static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
173 void *, unsigned long);
174static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
175static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
176
177static inline void
178qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
179{
180 init_timer(&ha->timer);
181 ha->timer.expires = jiffies + interval * HZ;
182 ha->timer.data = (unsigned long)ha;
183 ha->timer.function = (void (*)(unsigned long))func;
184 add_timer(&ha->timer);
185 ha->timer_active = 1;
186}
187
188static inline void
189qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
190{
191 mod_timer(&ha->timer, jiffies + interval * HZ);
192}
193
194static __inline__ void
195qla2x00_stop_timer(scsi_qla_host_t *ha)
196{
197 del_timer_sync(&ha->timer);
198 ha->timer_active = 0;
199}
200
1da177e4
LT		 201static int qla2x00_do_dpc(void *data);
202
203static void qla2x00_rst_aen(scsi_qla_host_t *);
204
205static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
206static void qla2x00_mem_free(scsi_qla_host_t *ha);
207static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
208static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
f4f051eb
AV		 209static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
210void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
1da177e4 211
1da177e4
LT		 212/* -------------------------------------------------------------------------- */
213
1da177e4 214static char *
abbd8870 215qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
1da177e4
LT		 216{
217 static char *pci_bus_modes[] = {
218 "33", "66", "100", "133",
219 };
220 uint16_t pci_bus;
221
222 strcpy(str, "PCI");
223 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
224 if (pci_bus) {
225 strcat(str, "-X (");
226 strcat(str, pci_bus_modes[pci_bus]);
227 } else {
228 pci_bus = (ha->pci_attr & BIT_8) >> 8;
229 strcat(str, " (");
230 strcat(str, pci_bus_modes[pci_bus]);
231 }
232 strcat(str, " MHz)");
233
234 return (str);
235}
236
fca29703
AV		 237static char *
238qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
239{
240 static char *pci_bus_modes[] = { "33", "66", "100", "133", };
241 uint32_t pci_bus;
242 int pcie_reg;
243
244 pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
245 if (pcie_reg) {
246 char lwstr[6];
247 uint16_t pcie_lstat, lspeed, lwidth;
248
249 pcie_reg += 0x12;
250 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
251 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
252 lwidth = (pcie_lstat &
253 (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
254
255 strcpy(str, "PCIe (");
256 if (lspeed == 1)
257 strcat(str, "2.5Gb/s ");
258 else
259 strcat(str, "<unknown> ");
260 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
261 strcat(str, lwstr);
262
263 return str;
264 }
265
266 strcpy(str, "PCI");
267 pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
268 if (pci_bus == 0 || pci_bus == 8) {
269 strcat(str, " (");
270 strcat(str, pci_bus_modes[pci_bus >> 3]);
271 } else {
272 strcat(str, "-X ");
273 if (pci_bus & BIT_2)
274 strcat(str, "Mode 2");
275 else
276 strcat(str, "Mode 1");
277 strcat(str, " (");
278 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
279 }
280 strcat(str, " MHz)");
281
282 return str;
283}
284
1da177e4 285char *
abbd8870 286qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
1da177e4
LT		 287{
288 char un_str[10];
fa2a1ce5 289
1da177e4
LT		 290 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
291 ha->fw_minor_version,
292 ha->fw_subminor_version);
293
294 if (ha->fw_attributes & BIT_9) {
295 strcat(str, "FLX");
296 return (str);
297 }
298
299 switch (ha->fw_attributes & 0xFF) {
300 case 0x7:
301 strcat(str, "EF");
302 break;
303 case 0x17:
304 strcat(str, "TP");
305 break;
306 case 0x37:
307 strcat(str, "IP");
308 break;
309 case 0x77:
310 strcat(str, "VI");
311 break;
312 default:
313 sprintf(un_str, "(%x)", ha->fw_attributes);
314 strcat(str, un_str);
315 break;
316 }
317 if (ha->fw_attributes & 0x100)
318 strcat(str, "X");
319
320 return (str);
321}
322
fca29703
AV		 323char *
324qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
325{
f0883ac6
AV		 326 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
327 ha->fw_minor_version,
328 ha->fw_subminor_version);
329
fca29703
AV		 330 if (ha->fw_attributes & BIT_0)
331 strcat(str, "[Class 2] ");
332 if (ha->fw_attributes & BIT_1)
333 strcat(str, "[IP] ");
334 if (ha->fw_attributes & BIT_2)
335 strcat(str, "[Multi-ID] ");
336 if (ha->fw_attributes & BIT_13)
337 strcat(str, "[Experimental]");
338 return str;
fca29703
AV		 339}
340
341static inline srb_t *
342qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
343 struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
344{
345 srb_t *sp;
346
347 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
348 if (!sp)
349 return sp;
350
351 atomic_set(&sp->ref_count, 1);
352 sp->ha = ha;
353 sp->fcport = fcport;
354 sp->cmd = cmd;
355 sp->flags = 0;
356 CMD_SP(cmd) = (void *)sp;
357 cmd->scsi_done = done;
358
359 return sp;
360}
361
1da177e4 362static int
f4f051eb 363qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
1da177e4 364{
f4f051eb 365 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 366 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051eb
AV		 367 srb_t *sp;
368 int rval;
1da177e4 369
bdf79621 370 if (!fcport) {
f4f051eb
AV		 371 cmd->result = DID_NO_CONNECT << 16;
372 goto qc_fail_command;
373 }
1da177e4 374
f4f051eb
AV		 375 if (atomic_read(&fcport->state) != FCS_ONLINE) {
376 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
377 atomic_read(&ha->loop_state) == LOOP_DEAD) {
378 cmd->result = DID_NO_CONNECT << 16;
379 goto qc_fail_command;
380 }
381 goto qc_host_busy;
382 }
1da177e4
LT		 383
384 spin_unlock_irq(ha->host->host_lock);
385
fca29703
AV		 386 sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
387 if (!sp)
f4f051eb 388 goto qc_host_busy_lock;
1da177e4 389
f4f051eb
AV		 390 rval = qla2x00_start_scsi(sp);
391 if (rval != QLA_SUCCESS)
392 goto qc_host_busy_free_sp;
1da177e4 393
f4f051eb
AV		 394 /* Manage unprocessed RIO/ZIO commands in response queue. */
395 if (ha->flags.online && ha->flags.process_response_queue &&
396 ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
397 unsigned long flags;
1da177e4 398
f4f051eb
AV		 399 spin_lock_irqsave(&ha->hardware_lock, flags);
400 qla2x00_process_response_queue(ha);
401 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 402 }
403
f4f051eb 404 spin_lock_irq(ha->host->host_lock);
1da177e4 405
f4f051eb 406 return 0;
1da177e4 407
f4f051eb
AV		 408qc_host_busy_free_sp:
409 qla2x00_sp_free_dma(ha, sp);
f4f051eb 410 mempool_free(sp, ha->srb_mempool);
1da177e4 411
f4f051eb
AV		 412qc_host_busy_lock:
413 spin_lock_irq(ha->host->host_lock);
1da177e4 414
f4f051eb
AV		 415qc_host_busy:
416 return SCSI_MLQUEUE_HOST_BUSY;
1da177e4 417
f4f051eb
AV		 418qc_fail_command:
419 done(cmd);
1da177e4 420
f4f051eb 421 return 0;
1da177e4
LT		 422}
423
fca29703
AV		 424
425static int
426qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
427{
428 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
429 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
430 srb_t *sp;
431 int rval;
432
433 if (!fcport) {
434 cmd->result = DID_NO_CONNECT << 16;
435 goto qc24_fail_command;
436 }
437
438 if (atomic_read(&fcport->state) != FCS_ONLINE) {
439 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
440 atomic_read(&ha->loop_state) == LOOP_DEAD) {
441 cmd->result = DID_NO_CONNECT << 16;
442 goto qc24_fail_command;
443 }
444 goto qc24_host_busy;
445 }
446
447 spin_unlock_irq(ha->host->host_lock);
448
449 sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
450 if (!sp)
451 goto qc24_host_busy_lock;
452
453 rval = qla24xx_start_scsi(sp);
454 if (rval != QLA_SUCCESS)
455 goto qc24_host_busy_free_sp;
456
457 spin_lock_irq(ha->host->host_lock);
458
459 return 0;
460
461qc24_host_busy_free_sp:
462 qla2x00_sp_free_dma(ha, sp);
463 mempool_free(sp, ha->srb_mempool);
464
465qc24_host_busy_lock:
466 spin_lock_irq(ha->host->host_lock);
467
468qc24_host_busy:
469 return SCSI_MLQUEUE_HOST_BUSY;
470
471qc24_fail_command:
472 done(cmd);
473
474 return 0;
475}
476
477
1da177e4
LT		 478/*
479 * qla2x00_eh_wait_on_command
480 * Waits for the command to be returned by the Firmware for some
481 * max time.
482 *
483 * Input:
484 * ha = actual ha whose done queue will contain the command
485 * returned by firmware.
486 * cmd = Scsi Command to wait on.
487 * flag = Abort/Reset(Bus or Device Reset)
488 *
489 * Return:
490 * Not Found : 0
491 * Found : 1
492 */
493static int
494qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
495{
496#define ABORT_POLLING_PERIOD HZ
f4f051eb
AV		 497#define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
498 unsigned long wait_iter = ABORT_WAIT_ITER;
499 int ret = QLA_SUCCESS;
1da177e4 500
f4f051eb 501 while (CMD_SP(cmd)) {
1da177e4
LT		 502 set_current_state(TASK_UNINTERRUPTIBLE);
503 schedule_timeout(ABORT_POLLING_PERIOD);
504
f4f051eb
AV		 505 if (--wait_iter)
506 break;
507 }
508 if (CMD_SP(cmd))
509 ret = QLA_FUNCTION_FAILED;
1da177e4 510
f4f051eb 511 return ret;
1da177e4
LT		 512}
513
514/*
515 * qla2x00_wait_for_hba_online
fa2a1ce5 516 * Wait till the HBA is online after going through
1da177e4
LT		 517 * <= MAX_RETRIES_OF_ISP_ABORT or
518 * finally HBA is disabled ie marked offline
519 *
520 * Input:
521 * ha - pointer to host adapter structure
fa2a1ce5
AV		 522 *
523 * Note:
1da177e4
LT		 524 * Does context switching-Release SPIN_LOCK
525 * (if any) before calling this routine.
526 *
527 * Return:
528 * Success (Adapter is online) : 0
529 * Failed (Adapter is offline/disabled) : 1
530 */
fa2a1ce5 531static int
1da177e4
LT		 532qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
533{
fca29703
AV		 534 int return_status;
535 unsigned long wait_online;
1da177e4 536
fa2a1ce5 537 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
1da177e4
LT		 538 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
539 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
540 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
541 ha->dpc_active) && time_before(jiffies, wait_online)) {
542
543 msleep(1000);
544 }
fa2a1ce5
AV		 545 if (ha->flags.online)
546 return_status = QLA_SUCCESS;
1da177e4
LT		 547 else
548 return_status = QLA_FUNCTION_FAILED;
549
550 DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
551
552 return (return_status);
553}
554
555/*
556 * qla2x00_wait_for_loop_ready
557 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
fa2a1ce5 558 * to be in LOOP_READY state.
1da177e4
LT		 559 * Input:
560 * ha - pointer to host adapter structure
fa2a1ce5
AV		 561 *
562 * Note:
1da177e4
LT		 563 * Does context switching-Release SPIN_LOCK
564 * (if any) before calling this routine.
fa2a1ce5 565 *
1da177e4
LT		 566 *
567 * Return:
568 * Success (LOOP_READY) : 0
569 * Failed (LOOP_NOT_READY) : 1
570 */
fa2a1ce5 571static inline int
1da177e4
LT		 572qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
573{
574 int return_status = QLA_SUCCESS;
575 unsigned long loop_timeout ;
576
577 /* wait for 5 min at the max for loop to be ready */
fa2a1ce5 578 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
1da177e4
LT		 579
580 while ((!atomic_read(&ha->loop_down_timer) &&
581 atomic_read(&ha->loop_state) == LOOP_DOWN) ||
1da177e4
LT		 582 atomic_read(&ha->loop_state) != LOOP_READY) {
583 msleep(1000);
584 if (time_after_eq(jiffies, loop_timeout)) {
585 return_status = QLA_FUNCTION_FAILED;
586 break;
587 }
588 }
fa2a1ce5 589 return (return_status);
1da177e4
LT		 590}
591
592/**************************************************************************
593* qla2xxx_eh_abort
594*
595* Description:
596* The abort function will abort the specified command.
597*
598* Input:
599* cmd = Linux SCSI command packet to be aborted.
600*
601* Returns:
602* Either SUCCESS or FAILED.
603*
604* Note:
605**************************************************************************/
606int
607qla2xxx_eh_abort(struct scsi_cmnd *cmd)
608{
f4f051eb
AV		 609 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
610 srb_t *sp;
611 int ret, i;
612 unsigned int id, lun;
613 unsigned long serial;
18e144d3 614 unsigned long flags;
1da177e4 615
f4f051eb
AV		 616 if (!CMD_SP(cmd))
617 return FAILED;
1da177e4 618
f4f051eb 619 ret = FAILED;
1da177e4 620
f4f051eb
AV		 621 id = cmd->device->id;
622 lun = cmd->device->lun;
623 serial = cmd->serial_number;
1da177e4 624
f4f051eb 625 /* Check active list for command command. */
18e144d3 626 spin_lock_irqsave(&ha->hardware_lock, flags);
f4f051eb
AV		 627 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
628 sp = ha->outstanding_cmds[i];
1da177e4 629
f4f051eb
AV		 630 if (sp == NULL)
631 continue;
1da177e4 632
f4f051eb
AV		 633 if (sp->cmd != cmd)
634 continue;
1da177e4 635
f4f051eb
AV		 636 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
637 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
638 sp->state));
639 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
1da177e4 640
18e144d3 641 spin_unlock_irqrestore(&ha->hardware_lock, flags);
abbd8870 642 if (ha->isp_ops.abort_command(ha, sp)) {
f4f051eb
AV		 643 DEBUG2(printk("%s(%ld): abort_command "
644 "mbx failed.\n", __func__, ha->host_no));
645 } else {
646 DEBUG3(printk("%s(%ld): abort_command "
647 "mbx success.\n", __func__, ha->host_no));
648 ret = SUCCESS;
649 }
18e144d3 650 spin_lock_irqsave(&ha->hardware_lock, flags);
1da177e4 651
f4f051eb
AV		 652 break;
653 }
18e144d3 654 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4 655
f4f051eb
AV		 656 /* Wait for the command to be returned. */
657 if (ret == SUCCESS) {
f4f051eb 658 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
fa2a1ce5 659 qla_printk(KERN_ERR, ha,
f4f051eb
AV		 660 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
661 "%x.\n", ha->host_no, id, lun, serial, ret);
662 }
1da177e4 663 }
1da177e4 664
fa2a1ce5 665 qla_printk(KERN_INFO, ha,
f4f051eb
AV		 666 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
667 id, lun, serial, ret);
1da177e4 668
f4f051eb
AV		 669 return ret;
670}
1da177e4 671
f4f051eb
AV		 672/**************************************************************************
673* qla2x00_eh_wait_for_pending_target_commands
674*
675* Description:
676* Waits for all the commands to come back from the specified target.
677*
678* Input:
679* ha - pointer to scsi_qla_host structure.
fa2a1ce5 680* t - target
f4f051eb
AV		 681* Returns:
682* Either SUCCESS or FAILED.
683*
684* Note:
685**************************************************************************/
686static int
687qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
688{
689 int cnt;
690 int status;
691 srb_t *sp;
692 struct scsi_cmnd *cmd;
18e144d3 693 unsigned long flags;
1da177e4 694
f4f051eb 695 status = 0;
1da177e4
LT		 696
697 /*
f4f051eb
AV		 698 * Waiting for all commands for the designated target in the active
699 * array
1da177e4
LT		 700 */
701 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
18e144d3 702 spin_lock_irqsave(&ha->hardware_lock, flags);
1da177e4
LT		 703 sp = ha->outstanding_cmds[cnt];
704 if (sp) {
705 cmd = sp->cmd;
18e144d3 706 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 707 if (cmd->device->id == t) {
708 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
709 status = 1;
710 break;
711 }
712 }
f4f051eb 713 } else {
18e144d3 714 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 715 }
716 }
717 return (status);
718}
719
720
721/**************************************************************************
722* qla2xxx_eh_device_reset
723*
724* Description:
725* The device reset function will reset the target and abort any
726* executing commands.
727*
728* NOTE: The use of SP is undefined within this context. Do *NOT*
fa2a1ce5 729* attempt to use this value, even if you determine it is
1da177e4
LT		 730* non-null.
731*
732* Input:
733* cmd = Linux SCSI command packet of the command that cause the
734* bus device reset.
735*
736* Returns:
737* SUCCESS/FAILURE (defined as macro in scsi.h).
738*
739**************************************************************************/
740int
741qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
742{
f4f051eb 743 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 744 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051eb
AV		 745 srb_t *sp;
746 int ret;
747 unsigned int id, lun;
748 unsigned long serial;
1da177e4 749
f4f051eb 750 ret = FAILED;
1da177e4 751
f4f051eb
AV		 752 id = cmd->device->id;
753 lun = cmd->device->lun;
754 serial = cmd->serial_number;
1da177e4 755
f4f051eb 756 sp = (srb_t *) CMD_SP(cmd);
bdf79621 757 if (!sp || !fcport)
f4f051eb 758 return ret;
1da177e4
LT		 759
760 qla_printk(KERN_INFO, ha,
f4f051eb 761 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4 762
94d0e7b8 763 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1da177e4 764 goto eh_dev_reset_done;
1da177e4
LT		 765
766 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051eb
AV		 767 if (qla2x00_device_reset(ha, fcport) == 0)
768 ret = SUCCESS;
1da177e4
LT		 769
770#if defined(LOGOUT_AFTER_DEVICE_RESET)
f4f051eb
AV		 771 if (ret == SUCCESS) {
772 if (fcport->flags & FC_FABRIC_DEVICE) {
abbd8870 773 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
f4f051eb 774 qla2x00_mark_device_lost(ha, fcport);
1da177e4
LT		 775 }
776 }
777#endif
778 } else {
779 DEBUG2(printk(KERN_INFO
780 "%s failed: loop not ready\n",__func__);)
781 }
782
f4f051eb 783 if (ret == FAILED) {
1da177e4
LT		 784 DEBUG3(printk("%s(%ld): device reset failed\n",
785 __func__, ha->host_no));
786 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
787 __func__);
788
789 goto eh_dev_reset_done;
790 }
791
792 /*
793 * If we are coming down the EH path, wait for all commands to
794 * complete for the device.
795 */
796 if (cmd->device->host->eh_active) {
f4f051eb
AV		 797 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
798 ret = FAILED;
1da177e4 799
f4f051eb 800 if (ret == FAILED) {
1da177e4
LT		 801 DEBUG3(printk("%s(%ld): failed while waiting for "
802 "commands\n", __func__, ha->host_no));
803 qla_printk(KERN_INFO, ha,
804 "%s: failed while waiting for commands\n",
fa2a1ce5 805 __func__);
1da177e4
LT		 806
807 goto eh_dev_reset_done;
808 }
809 }
810
811 qla_printk(KERN_INFO, ha,
f4f051eb 812 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no, id, lun);
1da177e4
LT		 813
814eh_dev_reset_done:
f4f051eb 815 return ret;
1da177e4
LT		 816}
817
818/**************************************************************************
819* qla2x00_eh_wait_for_pending_commands
820*
821* Description:
822* Waits for all the commands to come back from the specified host.
823*
824* Input:
825* ha - pointer to scsi_qla_host structure.
826*
827* Returns:
828* 1 : SUCCESS
829* 0 : FAILED
830*
831* Note:
832**************************************************************************/
833static int
834qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
835{
836 int cnt;
837 int status;
838 srb_t *sp;
839 struct scsi_cmnd *cmd;
18e144d3 840 unsigned long flags;
1da177e4
LT		 841
842 status = 1;
843
844 /*
845 * Waiting for all commands for the designated target in the active
846 * array
847 */
848 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
18e144d3 849 spin_lock_irqsave(&ha->hardware_lock, flags);
1da177e4
LT		 850 sp = ha->outstanding_cmds[cnt];
851 if (sp) {
852 cmd = sp->cmd;
18e144d3 853 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 854 status = qla2x00_eh_wait_on_command(ha, cmd);
855 if (status == 0)
856 break;
857 }
858 else {
18e144d3 859 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 860 }
861 }
862 return (status);
863}
864
865
866/**************************************************************************
867* qla2xxx_eh_bus_reset
868*
869* Description:
870* The bus reset function will reset the bus and abort any executing
871* commands.
872*
873* Input:
874* cmd = Linux SCSI command packet of the command that cause the
875* bus reset.
876*
877* Returns:
878* SUCCESS/FAILURE (defined as macro in scsi.h).
879*
880**************************************************************************/
881int
882qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
883{
f4f051eb 884 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 885 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
1da177e4 886 srb_t *sp;
f4f051eb
AV		 887 int ret;
888 unsigned int id, lun;
889 unsigned long serial;
890
891 ret = FAILED;
892
893 id = cmd->device->id;
894 lun = cmd->device->lun;
895 serial = cmd->serial_number;
1da177e4 896
1da177e4 897 sp = (srb_t *) CMD_SP(cmd);
bdf79621 898 if (!sp || !fcport)
f4f051eb 899 return ret;
1da177e4
LT		 900
901 qla_printk(KERN_INFO, ha,
f4f051eb 902 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4 903
1da177e4
LT		 904 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
905 DEBUG2(printk("%s failed:board disabled\n",__func__));
f4f051eb 906 goto eh_bus_reset_done;
1da177e4
LT		 907 }
908
909 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051eb
AV		 910 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
911 ret = SUCCESS;
1da177e4 912 }
f4f051eb
AV		 913 if (ret == FAILED)
914 goto eh_bus_reset_done;
1da177e4
LT		 915
916 /* Waiting for our command in done_queue to be returned to OS.*/
917 if (cmd->device->host->eh_active)
918 if (!qla2x00_eh_wait_for_pending_commands(ha))
f4f051eb 919 ret = FAILED;
1da177e4 920
f4f051eb 921eh_bus_reset_done:
1da177e4 922 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
f4f051eb 923 (ret == FAILED) ? "failed" : "succeded");
1da177e4 924
f4f051eb 925 return ret;
1da177e4
LT		 926}
927
928/**************************************************************************
929* qla2xxx_eh_host_reset
930*
931* Description:
932* The reset function will reset the Adapter.
933*
934* Input:
935* cmd = Linux SCSI command packet of the command that cause the
936* adapter reset.
937*
938* Returns:
939* Either SUCCESS or FAILED.
940*
941* Note:
942**************************************************************************/
943int
944qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
945{
f4f051eb 946 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 947 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051eb
AV		 948 srb_t *sp;
949 int ret;
950 unsigned int id, lun;
951 unsigned long serial;
1da177e4 952
f4f051eb
AV		 953 ret = FAILED;
954
955 id = cmd->device->id;
956 lun = cmd->device->lun;
957 serial = cmd->serial_number;
958
959 sp = (srb_t *) CMD_SP(cmd);
bdf79621 960 if (!sp || !fcport)
f4f051eb 961 return ret;
1da177e4 962
1da177e4 963 qla_printk(KERN_INFO, ha,
f4f051eb 964 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4 965
1da177e4 966 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051eb 967 goto eh_host_reset_lock;
1da177e4
LT		 968
969 /*
970 * Fixme-may be dpc thread is active and processing
fa2a1ce5 971 * loop_resync,so wait a while for it to
1da177e4
LT		 972 * be completed and then issue big hammer.Otherwise
973 * it may cause I/O failure as big hammer marks the
974 * devices as lost kicking of the port_down_timer
975 * while dpc is stuck for the mailbox to complete.
976 */
1da177e4
LT		 977 qla2x00_wait_for_loop_ready(ha);
978 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
979 if (qla2x00_abort_isp(ha)) {
980 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
981 /* failed. schedule dpc to try */
982 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
983
984 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051eb 985 goto eh_host_reset_lock;
fa2a1ce5 986 }
1da177e4
LT		 987 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
988
1da177e4 989 /* Waiting for our command in done_queue to be returned to OS.*/
f4f051eb
AV		 990 if (qla2x00_eh_wait_for_pending_commands(ha))
991 ret = SUCCESS;
1da177e4 992
f4f051eb 993eh_host_reset_lock:
f4f051eb
AV		 994 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
995 (ret == FAILED) ? "failed" : "succeded");
1da177e4 996
f4f051eb
AV		 997 return ret;
998}
1da177e4
LT		 999
1000/*
1001* qla2x00_loop_reset
1002* Issue loop reset.
1003*
1004* Input:
1005* ha = adapter block pointer.
1006*
1007* Returns:
1008* 0 = success
1009*/
1010static int
1011qla2x00_loop_reset(scsi_qla_host_t *ha)
1012{
1013 int status = QLA_SUCCESS;
bdf79621 1014 struct fc_port *fcport;
1da177e4
LT		 1015
1016 if (ha->flags.enable_lip_reset) {
1017 status = qla2x00_lip_reset(ha);
1018 }
1019
1020 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
bdf79621
AV		 1021 list_for_each_entry(fcport, &ha->fcports, list) {
1022 if (fcport->port_type != FCT_TARGET)
1da177e4
LT		 1023 continue;
1024
c00c72ae 1025 status = qla2x00_device_reset(ha, fcport);
bdf79621 1026 if (status != QLA_SUCCESS)
1da177e4 1027 break;
1da177e4
LT		 1028 }
1029 }
1030
1031 if (status == QLA_SUCCESS &&
fa2a1ce5 1032 ((!ha->flags.enable_target_reset &&
1da177e4
LT		 1033 !ha->flags.enable_lip_reset) ||
1034 ha->flags.enable_lip_full_login)) {
1035
1036 status = qla2x00_full_login_lip(ha);
1037 }
1038
1039 /* Issue marker command only when we are going to start the I/O */
1040 ha->marker_needed = 1;
1041
1042 if (status) {
1043 /* Empty */
1044 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1045 __func__,
1046 ha->host_no);)
1047 } else {
1048 /* Empty */
1049 DEBUG3(printk("%s(%ld): exiting normally.\n",
1050 __func__,
1051 ha->host_no);)
1052 }
1053
1054 return(status);
1055}
1056
1057/*
1058 * qla2x00_device_reset
1059 * Issue bus device reset message to the target.
1060 *
1061 * Input:
1062 * ha = adapter block pointer.
1063 * t = SCSI ID.
1064 * TARGET_QUEUE_LOCK must be released.
1065 * ADAPTER_STATE_LOCK must be released.
1066 *
1067 * Context:
1068 * Kernel context.
1069 */
1070static int
1071qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1072{
1073 /* Abort Target command will clear Reservation */
abbd8870 1074 return ha->isp_ops.abort_target(reset_fcport);
1da177e4
LT		 1075}
1076
f4f051eb
AV		 1077static int
1078qla2xxx_slave_alloc(struct scsi_device *sdev)
1da177e4 1079{
bdf79621 1080 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1da177e4 1081
bdf79621 1082 if (!rport)
f4f051eb 1083 return -ENXIO;
bdf79621 1084
77d74143 1085 sdev->hostdata = rport->dd_data;
1da177e4 1086
f4f051eb
AV		 1087 return 0;
1088}
1da177e4 1089
f4f051eb
AV		 1090static int
1091qla2xxx_slave_configure(struct scsi_device *sdev)
1092{
8482e118
AV		 1093 scsi_qla_host_t *ha = to_qla_host(sdev->host);
1094 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1095
f4f051eb
AV		 1096 if (sdev->tagged_supported)
1097 scsi_activate_tcq(sdev, 32);
1098 else
1099 scsi_deactivate_tcq(sdev, 32);
1da177e4 1100
8482e118
AV		 1101 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1102
f4f051eb
AV		 1103 return 0;
1104}
1da177e4 1105
f4f051eb
AV		 1106static void
1107qla2xxx_slave_destroy(struct scsi_device *sdev)
1108{
1109 sdev->hostdata = NULL;
1da177e4
LT		 1110}
1111
1112/**
1113 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1114 * @ha: HA context
1115 *
1116 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1117 * supported addressing method.
1118 */
1119static void
1120qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1121{
7524f9b9 1122 /* Assume a 32bit DMA mask. */
1da177e4 1123 ha->flags.enable_64bit_addressing = 0;
1da177e4 1124
7524f9b9
AV		 1125 if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1126 /* Any upper-dword bits set? */
1127 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1128 !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1129 /* Ok, a 64bit DMA mask is applicable. */
1da177e4 1130 ha->flags.enable_64bit_addressing = 1;
abbd8870
AV		 1131 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1132 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
7524f9b9 1133 return;
1da177e4 1134 }
1da177e4 1135 }
7524f9b9
AV		 1136
1137 dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1138 pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1da177e4
LT		 1139}
1140
1141static int
1142qla2x00_iospace_config(scsi_qla_host_t *ha)
1143{
1144 unsigned long pio, pio_len, pio_flags;
1145 unsigned long mmio, mmio_len, mmio_flags;
1146
1147 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1148 pio = pci_resource_start(ha->pdev, 0);
1149 pio_len = pci_resource_len(ha->pdev, 0);
1150 pio_flags = pci_resource_flags(ha->pdev, 0);
1151 if (pio_flags & IORESOURCE_IO) {
1152 if (pio_len < MIN_IOBASE_LEN) {
1153 qla_printk(KERN_WARNING, ha,
1154 "Invalid PCI I/O region size (%s)...\n",
1155 pci_name(ha->pdev));
1156 pio = 0;
1157 }
1158 } else {
1159 qla_printk(KERN_WARNING, ha,
1160 "region #0 not a PIO resource (%s)...\n",
1161 pci_name(ha->pdev));
1162 pio = 0;
1163 }
1164
1165 /* Use MMIO operations for all accesses. */
1166 mmio = pci_resource_start(ha->pdev, 1);
1167 mmio_len = pci_resource_len(ha->pdev, 1);
1168 mmio_flags = pci_resource_flags(ha->pdev, 1);
1169
1170 if (!(mmio_flags & IORESOURCE_MEM)) {
1171 qla_printk(KERN_ERR, ha,
1172 "region #0 not an MMIO resource (%s), aborting\n",
1173 pci_name(ha->pdev));
1174 goto iospace_error_exit;
1175 }
1176 if (mmio_len < MIN_IOBASE_LEN) {
1177 qla_printk(KERN_ERR, ha,
1178 "Invalid PCI mem region size (%s), aborting\n",
1179 pci_name(ha->pdev));
1180 goto iospace_error_exit;
1181 }
1182
1183 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1184 qla_printk(KERN_WARNING, ha,
1185 "Failed to reserve PIO/MMIO regions (%s)\n",
1186 pci_name(ha->pdev));
1187
1188 goto iospace_error_exit;
1189 }
1190
1191 ha->pio_address = pio;
1192 ha->pio_length = pio_len;
1193 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1194 if (!ha->iobase) {
1195 qla_printk(KERN_ERR, ha,
1196 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1197
1198 goto iospace_error_exit;
1199 }
1200
1201 return (0);
1202
1203iospace_error_exit:
1204 return (-ENOMEM);
1205}
1206
abbd8870
AV		 1207static void
1208qla2x00_enable_intrs(scsi_qla_host_t *ha)
1209{
1210 unsigned long flags = 0;
3d71644c 1211 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
abbd8870
AV		 1212
1213 spin_lock_irqsave(&ha->hardware_lock, flags);
1214 ha->interrupts_on = 1;
1215 /* enable risc and host interrupts */
1216 WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1217 RD_REG_WORD(&reg->ictrl);
1218 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1219
1220}
1221
1222static void
1223qla2x00_disable_intrs(scsi_qla_host_t *ha)
1224{
1225 unsigned long flags = 0;
3d71644c 1226 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
abbd8870
AV		 1227
1228 spin_lock_irqsave(&ha->hardware_lock, flags);
1229 ha->interrupts_on = 0;
1230 /* disable risc and host interrupts */
1231 WRT_REG_WORD(&reg->ictrl, 0);
1232 RD_REG_WORD(&reg->ictrl);
1233 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1234}
1235
fca29703
AV		 1236static void
1237qla24xx_enable_intrs(scsi_qla_host_t *ha)
1238{
1239 unsigned long flags = 0;
1240 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1241
1242 spin_lock_irqsave(&ha->hardware_lock, flags);
1243 ha->interrupts_on = 1;
1244 WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1245 RD_REG_DWORD(&reg->ictrl);
1246 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1247}
1248
1249static void
1250qla24xx_disable_intrs(scsi_qla_host_t *ha)
1251{
1252 unsigned long flags = 0;
1253 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1254
1255 spin_lock_irqsave(&ha->hardware_lock, flags);
1256 ha->interrupts_on = 0;
1257 WRT_REG_DWORD(&reg->ictrl, 0);
1258 RD_REG_DWORD(&reg->ictrl);
1259 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1260}
1261
1da177e4
LT		 1262/*
1263 * PCI driver interface
1264 */
1265int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1266{
a1541d5a 1267 int ret = -ENODEV;
fca29703 1268 device_reg_t __iomem *reg;
1da177e4
LT		 1269 struct Scsi_Host *host;
1270 scsi_qla_host_t *ha;
1271 unsigned long flags = 0;
1272 unsigned long wait_switch = 0;
1273 char pci_info[20];
1274 char fw_str[30];
8482e118 1275 fc_port_t *fcport;
1da177e4
LT		 1276
1277 if (pci_enable_device(pdev))
a1541d5a 1278 goto probe_out;
1da177e4 1279
fca29703
AV		 1280 host = scsi_host_alloc(brd_info->sht ? brd_info->sht:
1281 &qla2x00_driver_template, sizeof(scsi_qla_host_t));
1da177e4
LT		 1282 if (host == NULL) {
1283 printk(KERN_WARNING
1284 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1285 goto probe_disable_device;
1286 }
1287
1288 /* Clear our data area */
1289 ha = (scsi_qla_host_t *)host->hostdata;
1290 memset(ha, 0, sizeof(scsi_qla_host_t));
1291
1292 ha->pdev = pdev;
1293 ha->host = host;
1294 ha->host_no = host->host_no;
1295 ha->brd_info = brd_info;
1296 sprintf(ha->host_str, "%s_%ld", ha->brd_info->drv_name, ha->host_no);
1297
1298 /* Configure PCI I/O space */
1299 ret = qla2x00_iospace_config(ha);
a1541d5a
AV		 1300 if (ret)
1301 goto probe_failed;
1da177e4 1302
1da177e4
LT		 1303 qla_printk(KERN_INFO, ha,
1304 "Found an %s, irq %d, iobase 0x%p\n", ha->brd_info->isp_name,
fca29703 1305 pdev->irq, ha->iobase);
1da177e4
LT		 1306
1307 spin_lock_init(&ha->hardware_lock);
1308
1da177e4
LT		 1309 ha->prev_topology = 0;
1310 ha->ports = MAX_BUSES;
fca29703 1311 ha->init_cb_size = sizeof(init_cb_t);
cca5335c 1312 ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1da177e4 1313
abbd8870
AV		 1314 /* Assign ISP specific operations. */
1315 ha->isp_ops.pci_config = qla2100_pci_config;
1316 ha->isp_ops.reset_chip = qla2x00_reset_chip;
1317 ha->isp_ops.chip_diag = qla2x00_chip_diag;
1318 ha->isp_ops.config_rings = qla2x00_config_rings;
1319 ha->isp_ops.reset_adapter = qla2x00_reset_adapter;
1320 ha->isp_ops.nvram_config = qla2x00_nvram_config;
1321 ha->isp_ops.update_fw_options = qla2x00_update_fw_options;
0107109e 1322 ha->isp_ops.load_risc = qla2x00_load_risc;
abbd8870
AV		 1323 ha->isp_ops.pci_info_str = qla2x00_pci_info_str;
1324 ha->isp_ops.fw_version_str = qla2x00_fw_version_str;
1325 ha->isp_ops.intr_handler = qla2100_intr_handler;
1326 ha->isp_ops.enable_intrs = qla2x00_enable_intrs;
1327 ha->isp_ops.disable_intrs = qla2x00_disable_intrs;
1328 ha->isp_ops.abort_command = qla2x00_abort_command;
1329 ha->isp_ops.abort_target = qla2x00_abort_target;
1330 ha->isp_ops.fabric_login = qla2x00_login_fabric;
1331 ha->isp_ops.fabric_logout = qla2x00_fabric_logout;
1332 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_32;
1333 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_32;
1334 ha->isp_ops.prep_ms_iocb = qla2x00_prep_ms_iocb;
cca5335c 1335 ha->isp_ops.prep_ms_fdmi_iocb = qla2x00_prep_ms_fdmi_iocb;
459c5378
AV		 1336 ha->isp_ops.read_nvram = qla2x00_read_nvram_data;
1337 ha->isp_ops.write_nvram = qla2x00_write_nvram_data;
abbd8870
AV		 1338 ha->isp_ops.fw_dump = qla2100_fw_dump;
1339 ha->isp_ops.ascii_fw_dump = qla2100_ascii_fw_dump;
1da177e4 1340 if (IS_QLA2100(ha)) {
354d6b21 1341 host->max_id = MAX_TARGETS_2100;
1da177e4
LT		 1342 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1343 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1344 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1345 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1346 host->sg_tablesize = 32;
abbd8870 1347 ha->gid_list_info_size = 4;
1da177e4 1348 } else if (IS_QLA2200(ha)) {
354d6b21 1349 host->max_id = MAX_TARGETS_2200;
1da177e4
LT		 1350 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1351 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1352 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1353 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
abbd8870 1354 ha->gid_list_info_size = 4;
fca29703 1355 } else if (IS_QLA23XX(ha)) {
354d6b21 1356 host->max_id = MAX_TARGETS_2200;
1da177e4
LT		 1357 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1358 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1359 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1360 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
abbd8870
AV		 1361 ha->isp_ops.pci_config = qla2300_pci_config;
1362 ha->isp_ops.intr_handler = qla2300_intr_handler;
1363 ha->isp_ops.fw_dump = qla2300_fw_dump;
1364 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1365 ha->gid_list_info_size = 6;
fca29703
AV		 1366 } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1367 host->max_id = MAX_TARGETS_2200;
1368 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1369 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1370 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1371 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1372 ha->init_cb_size = sizeof(struct init_cb_24xx);
cca5335c 1373 ha->mgmt_svr_loop_id = 10;
fca29703
AV		 1374 ha->isp_ops.pci_config = qla24xx_pci_config;
1375 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1376 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1377 ha->isp_ops.config_rings = qla24xx_config_rings;
1378 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1379 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1380 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
1381 ha->isp_ops.load_risc = qla24xx_load_risc_flash;
1382 if (ql2xfwloadbin)
1383 ha->isp_ops.load_risc = qla24xx_load_risc_hotplug;
1384 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1385 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1386 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1387 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1388 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1389 ha->isp_ops.abort_command = qla24xx_abort_command;
1390 ha->isp_ops.abort_target = qla24xx_abort_target;
1391 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1392 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1393 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
cca5335c 1394 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
fca29703
AV		 1395 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1396 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1397 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1398 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1399 ha->gid_list_info_size = 8;
1da177e4
LT		 1400 }
1401 host->can_queue = ha->request_q_length + 128;
1402
1403 /* load the F/W, read paramaters, and init the H/W */
1404 ha->instance = num_hosts;
1405
1406 init_MUTEX(&ha->mbx_cmd_sem);
1407 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1408
1409 INIT_LIST_HEAD(&ha->list);
1410 INIT_LIST_HEAD(&ha->fcports);
1411 INIT_LIST_HEAD(&ha->rscn_fcports);
1da177e4
LT		 1412
1413 /*
1414 * These locks are used to prevent more than one CPU
1415 * from modifying the queue at the same time. The
1416 * higher level "host_lock" will reduce most
1417 * contention for these locks.
1418 */
1419 spin_lock_init(&ha->mbx_reg_lock);
1da177e4
LT		 1420
1421 ha->dpc_pid = -1;
1422 init_completion(&ha->dpc_inited);
1423 init_completion(&ha->dpc_exited);
1424
1425 qla2x00_config_dma_addressing(ha);
1426 if (qla2x00_mem_alloc(ha)) {
1427 qla_printk(KERN_WARNING, ha,
1428 "[ERROR] Failed to allocate memory for adapter\n");
1429
a1541d5a
AV		 1430 ret = -ENOMEM;
1431 goto probe_failed;
1da177e4
LT		 1432 }
1433
1434 if (qla2x00_initialize_adapter(ha) &&
1435 !(ha->device_flags & DFLG_NO_CABLE)) {
1436
1437 qla_printk(KERN_WARNING, ha,
1438 "Failed to initialize adapter\n");
1439
1440 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1441 "Adapter flags %x.\n",
1442 ha->host_no, ha->device_flags));
1443
a1541d5a 1444 ret = -ENODEV;
1da177e4
LT		 1445 goto probe_failed;
1446 }
1447
1448 /*
1449 * Startup the kernel thread for this host adapter
1450 */
1451 ha->dpc_should_die = 0;
1452 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1453 if (ha->dpc_pid < 0) {
1454 qla_printk(KERN_WARNING, ha,
1455 "Unable to start DPC thread!\n");
1456
a1541d5a 1457 ret = -ENODEV;
1da177e4
LT		 1458 goto probe_failed;
1459 }
1460 wait_for_completion(&ha->dpc_inited);
1461
a1541d5a
AV		 1462 host->this_id = 255;
1463 host->cmd_per_lun = 3;
1464 host->unique_id = ha->instance;
1465 host->max_cmd_len = MAX_CMDSZ;
1466 host->max_channel = ha->ports - 1;
1467 host->max_lun = MAX_LUNS;
1468 host->transportt = qla2xxx_transport_template;
1469
fca29703 1470 ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
abbd8870 1471 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
a1541d5a 1472 if (ret) {
1da177e4
LT		 1473 qla_printk(KERN_WARNING, ha,
1474 "Failed to reserve interrupt %d already in use.\n",
fca29703 1475 pdev->irq);
1da177e4
LT		 1476 goto probe_failed;
1477 }
fca29703 1478 host->irq = pdev->irq;
1da177e4
LT		 1479
1480 /* Initialized the timer */
1481 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1482
1483 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1484 ha->host_no, ha));
1485
abbd8870 1486 ha->isp_ops.disable_intrs(ha);
1da177e4 1487
1da177e4 1488 spin_lock_irqsave(&ha->hardware_lock, flags);
fca29703
AV		 1489 reg = ha->iobase;
1490 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1491 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1492 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1493 } else {
1494 WRT_REG_WORD(&reg->isp.semaphore, 0);
1495 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1496 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1497
1498 /* Enable proper parity */
1499 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1500 if (IS_QLA2300(ha))
1501 /* SRAM parity */
1502 WRT_REG_WORD(&reg->isp.hccr,
1503 (HCCR_ENABLE_PARITY + 0x1));
1504 else
1505 /* SRAM, Instruction RAM and GP RAM parity */
1506 WRT_REG_WORD(&reg->isp.hccr,
1507 (HCCR_ENABLE_PARITY + 0x7));
1508 }
1da177e4
LT		 1509 }
1510 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1511
abbd8870 1512 ha->isp_ops.enable_intrs(ha);
1da177e4
LT		 1513
1514 /* v2.19.5b6 */
1515 /*
1516 * Wait around max loop_reset_delay secs for the devices to come
1517 * on-line. We don't want Linux scanning before we are ready.
1518 *
1519 */
1520 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1521 time_before(jiffies,wait_switch) &&
1522 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1523 && (ha->device_flags & SWITCH_FOUND) ;) {
1524
1525 qla2x00_check_fabric_devices(ha);
1526
1527 msleep(10);
1528 }
1529
a1541d5a 1530 pci_set_drvdata(pdev, ha);
1da177e4
LT		 1531 ha->flags.init_done = 1;
1532 num_hosts++;
1533
a1541d5a
AV		 1534 ret = scsi_add_host(host, &pdev->dev);
1535 if (ret)
1536 goto probe_failed;
1537
1538 qla2x00_alloc_sysfs_attr(ha);
1539
1540 qla2x00_init_host_attr(ha);
1541
1da177e4
LT		 1542 qla_printk(KERN_INFO, ha, "\n"
1543 " QLogic Fibre Channel HBA Driver: %s\n"
1544 " QLogic %s - %s\n"
1545 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str,
1546 ha->model_number, ha->model_desc ? ha->model_desc: "",
abbd8870 1547 ha->brd_info->isp_name, ha->isp_ops.pci_info_str(ha, pci_info),
fca29703 1548 pci_name(pdev), ha->flags.enable_64bit_addressing ? '+': '-',
abbd8870 1549 ha->host_no, ha->isp_ops.fw_version_str(ha, fw_str));
1da177e4 1550
8482e118
AV		 1551 /* Go with fc_rport registration. */
1552 list_for_each_entry(fcport, &ha->fcports, list)
1553 qla2x00_reg_remote_port(ha, fcport);
1da177e4
LT		 1554
1555 return 0;
1556
1557probe_failed:
bdf79621
AV		 1558 fc_remove_host(ha->host);
1559
1da177e4
LT		 1560 qla2x00_free_device(ha);
1561
1562 scsi_host_put(host);
1563
1564probe_disable_device:
1565 pci_disable_device(pdev);
1566
a1541d5a
AV		 1567probe_out:
1568 return ret;
1da177e4
LT		 1569}
1570EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1571
1572void qla2x00_remove_one(struct pci_dev *pdev)
1573{
1574 scsi_qla_host_t *ha;
1575
1576 ha = pci_get_drvdata(pdev);
1577
8482e118 1578 qla2x00_free_sysfs_attr(ha);
1da177e4 1579
bdf79621
AV		 1580 fc_remove_host(ha->host);
1581
1da177e4
LT		 1582 scsi_remove_host(ha->host);
1583
1584 qla2x00_free_device(ha);
1585
1586 scsi_host_put(ha->host);
1587
1588 pci_set_drvdata(pdev, NULL);
1589}
1590EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1591
1592static void
1593qla2x00_free_device(scsi_qla_host_t *ha)
1594{
1595 int ret;
1596
1597 /* Abort any outstanding IO descriptors. */
1598 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1599 qla2x00_cancel_io_descriptors(ha);
1600
1601 /* turn-off interrupts on the card */
1602 if (ha->interrupts_on)
abbd8870 1603 ha->isp_ops.disable_intrs(ha);
1da177e4
LT		 1604
1605 /* Disable timer */
1606 if (ha->timer_active)
1607 qla2x00_stop_timer(ha);
1608
1609 /* Kill the kernel thread for this host */
1610 if (ha->dpc_pid >= 0) {
1611 ha->dpc_should_die = 1;
1612 wmb();
1613 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1614 if (ret) {
1615 qla_printk(KERN_ERR, ha,
1616 "Unable to signal DPC thread -- (%d)\n", ret);
1617
1618 /* TODO: SOMETHING MORE??? */
1619 } else {
1620 wait_for_completion(&ha->dpc_exited);
1621 }
1622 }
1623
1624 qla2x00_mem_free(ha);
1625
1626
1627 ha->flags.online = 0;
1628
1629 /* Detach interrupts */
1630 if (ha->pdev->irq)
1631 free_irq(ha->pdev->irq, ha);
1632
1633 /* release io space registers */
1634 if (ha->iobase)
1635 iounmap(ha->iobase);
1636 pci_release_regions(ha->pdev);
1637
1638 pci_disable_device(ha->pdev);
1639}
1640
1da177e4
LT		 1641/*
1642 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1643 *
1644 * Input: ha = adapter block pointer. fcport = port structure pointer.
1645 *
1646 * Return: None.
1647 *
1648 * Context:
1649 */
1650void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
1651 int do_login)
1652{
8482e118
AV		 1653 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1654 fc_remote_port_block(fcport->rport);
fa2a1ce5 1655 /*
1da177e4
LT		 1656 * We may need to retry the login, so don't change the state of the
1657 * port but do the retries.
1658 */
1659 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1660 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1661
1662 if (!do_login)
1663 return;
1664
1665 if (fcport->login_retry == 0) {
1666 fcport->login_retry = ha->login_retry_count;
1667 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1668
1669 DEBUG(printk("scsi(%ld): Port login retry: "
1670 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1671 "id = 0x%04x retry cnt=%d\n",
1672 ha->host_no,
1673 fcport->port_name[0],
1674 fcport->port_name[1],
1675 fcport->port_name[2],
1676 fcport->port_name[3],
1677 fcport->port_name[4],
1678 fcport->port_name[5],
1679 fcport->port_name[6],
1680 fcport->port_name[7],
1681 fcport->loop_id,
1682 fcport->login_retry));
1683 }
1684}
1685
1686/*
1687 * qla2x00_mark_all_devices_lost
1688 * Updates fcport state when device goes offline.
1689 *
1690 * Input:
1691 * ha = adapter block pointer.
1692 * fcport = port structure pointer.
1693 *
1694 * Return:
1695 * None.
1696 *
1697 * Context:
1698 */
1699void
fa2a1ce5 1700qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha)
1da177e4
LT		 1701{
1702 fc_port_t *fcport;
1703
1704 list_for_each_entry(fcport, &ha->fcports, list) {
1705 if (fcport->port_type != FCT_TARGET)
1706 continue;
1707
1708 /*
1709 * No point in marking the device as lost, if the device is
1710 * already DEAD.
1711 */
1712 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1713 continue;
8482e118
AV		 1714 if (atomic_read(&fcport->state) == FCS_ONLINE && fcport->rport)
1715 fc_remote_port_block(fcport->rport);
1da177e4
LT		 1716 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1717 }
1718}
1719
1720/*
1721* qla2x00_mem_alloc
1722* Allocates adapter memory.
1723*
1724* Returns:
1725* 0 = success.
1726* 1 = failure.
1727*/
1728static uint8_t
1729qla2x00_mem_alloc(scsi_qla_host_t *ha)
1730{
1731 char name[16];
1732 uint8_t status = 1;
1733 int retry= 10;
1734
1735 do {
1736 /*
1737 * This will loop only once if everything goes well, else some
1738 * number of retries will be performed to get around a kernel
1739 * bug where available mem is not allocated until after a
1740 * little delay and a retry.
1741 */
1742 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1743 (ha->request_q_length + 1) * sizeof(request_t),
1744 &ha->request_dma, GFP_KERNEL);
1745 if (ha->request_ring == NULL) {
1746 qla_printk(KERN_WARNING, ha,
1747 "Memory Allocation failed - request_ring\n");
1748
1749 qla2x00_mem_free(ha);
1750 msleep(100);
1751
1752 continue;
1753 }
1754
1755 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1756 (ha->response_q_length + 1) * sizeof(response_t),
1757 &ha->response_dma, GFP_KERNEL);
1758 if (ha->response_ring == NULL) {
1759 qla_printk(KERN_WARNING, ha,
1760 "Memory Allocation failed - response_ring\n");
1761
1762 qla2x00_mem_free(ha);
1763 msleep(100);
1764
1765 continue;
1766 }
1767
1768 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1769 &ha->gid_list_dma, GFP_KERNEL);
1770 if (ha->gid_list == NULL) {
1771 qla_printk(KERN_WARNING, ha,
1772 "Memory Allocation failed - gid_list\n");
1773
1774 qla2x00_mem_free(ha);
1775 msleep(100);
1776
1777 continue;
1778 }
1779
1780 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1781 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1782 if (ha->rlc_rsp == NULL) {
1783 qla_printk(KERN_WARNING, ha,
1784 "Memory Allocation failed - rlc");
1785
1786 qla2x00_mem_free(ha);
1787 msleep(100);
1788
1789 continue;
1790 }
1791
1792 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1793 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1794 DMA_POOL_SIZE, 8, 0);
1795 if (ha->s_dma_pool == NULL) {
1796 qla_printk(KERN_WARNING, ha,
1797 "Memory Allocation failed - s_dma_pool\n");
1798
1799 qla2x00_mem_free(ha);
1800 msleep(100);
1801
1802 continue;
1803 }
1804
1805 /* get consistent memory allocated for init control block */
1806 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1807 &ha->init_cb_dma);
1808 if (ha->init_cb == NULL) {
1809 qla_printk(KERN_WARNING, ha,
1810 "Memory Allocation failed - init_cb\n");
1811
1812 qla2x00_mem_free(ha);
1813 msleep(100);
1814
1815 continue;
1816 }
fca29703 1817 memset(ha->init_cb, 0, ha->init_cb_size);
1da177e4
LT		 1818
1819 /* Get consistent memory allocated for Get Port Database cmd */
1820 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1821 &ha->iodesc_pd_dma);
1822 if (ha->iodesc_pd == NULL) {
1823 /* error */
1824 qla_printk(KERN_WARNING, ha,
1825 "Memory Allocation failed - iodesc_pd\n");
1826
1827 qla2x00_mem_free(ha);
1828 msleep(100);
1829
1830 continue;
1831 }
1832 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1833
1834 /* Allocate ioctl related memory. */
1835 if (qla2x00_alloc_ioctl_mem(ha)) {
1836 qla_printk(KERN_WARNING, ha,
1837 "Memory Allocation failed - ioctl_mem\n");
1838
1839 qla2x00_mem_free(ha);
1840 msleep(100);
1841
1842 continue;
1843 }
1844
1845 if (qla2x00_allocate_sp_pool(ha)) {
1846 qla_printk(KERN_WARNING, ha,
1847 "Memory Allocation failed - "
1848 "qla2x00_allocate_sp_pool()\n");
1849
1850 qla2x00_mem_free(ha);
1851 msleep(100);
1852
1853 continue;
1854 }
1855
1856 /* Allocate memory for SNS commands */
1857 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1858 /* Get consistent memory allocated for SNS commands */
1859 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1860 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1861 GFP_KERNEL);
1862 if (ha->sns_cmd == NULL) {
1863 /* error */
1864 qla_printk(KERN_WARNING, ha,
1865 "Memory Allocation failed - sns_cmd\n");
1866
1867 qla2x00_mem_free(ha);
1868 msleep(100);
1869
1870 continue;
1871 }
1872 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1873 } else {
1874 /* Get consistent memory allocated for MS IOCB */
1875 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1876 &ha->ms_iocb_dma);
1877 if (ha->ms_iocb == NULL) {
1878 /* error */
1879 qla_printk(KERN_WARNING, ha,
1880 "Memory Allocation failed - ms_iocb\n");
1881
1882 qla2x00_mem_free(ha);
1883 msleep(100);
1884
1885 continue;
1886 }
1887 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1888
1889 /*
1890 * Get consistent memory allocated for CT SNS
1891 * commands
1892 */
1893 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1894 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1895 GFP_KERNEL);
1896 if (ha->ct_sns == NULL) {
1897 /* error */
1898 qla_printk(KERN_WARNING, ha,
1899 "Memory Allocation failed - ct_sns\n");
1900
1901 qla2x00_mem_free(ha);
1902 msleep(100);
1903
1904 continue;
1905 }
1906 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1907 }
1908
1909 /* Done all allocations without any error. */
1910 status = 0;
1911
1912 } while (retry-- && status != 0);
1913
1914 if (status) {
1915 printk(KERN_WARNING
1916 "%s(): **** FAILED ****\n", __func__);
1917 }
1918
1919 return(status);
1920}
1921
1922/*
1923* qla2x00_mem_free
1924* Frees all adapter allocated memory.
1925*
1926* Input:
1927* ha = adapter block pointer.
1928*/
1929static void
1930qla2x00_mem_free(scsi_qla_host_t *ha)
1931{
1da177e4
LT		 1932 struct list_head *fcpl, *fcptemp;
1933 fc_port_t *fcport;
1da177e4
LT		 1934 unsigned long wtime;/* max wait time if mbx cmd is busy. */
1935
1936 if (ha == NULL) {
1937 /* error */
1938 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1939 return;
1940 }
1941
1da177e4
LT		 1942 /* Make sure all other threads are stopped. */
1943 wtime = 60 * HZ;
1944 while (ha->dpc_wait && wtime) {
1945 set_current_state(TASK_INTERRUPTIBLE);
1946 wtime = schedule_timeout(wtime);
1947 }
1948
1949 /* free ioctl memory */
1950 qla2x00_free_ioctl_mem(ha);
1951
1952 /* free sp pool */
1953 qla2x00_free_sp_pool(ha);
1954
1955 if (ha->sns_cmd)
1956 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1957 ha->sns_cmd, ha->sns_cmd_dma);
1958
1959 if (ha->ct_sns)
1960 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1961 ha->ct_sns, ha->ct_sns_dma);
1962
1963 if (ha->ms_iocb)
1964 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1965
1966 if (ha->iodesc_pd)
1967 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1968
1969 if (ha->init_cb)
1970 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
1971
1972 if (ha->s_dma_pool)
1973 dma_pool_destroy(ha->s_dma_pool);
1974
1975 if (ha->rlc_rsp)
1976 dma_free_coherent(&ha->pdev->dev,
1977 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
1978 ha->rlc_rsp_dma);
1979
1980 if (ha->gid_list)
1981 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
1982 ha->gid_list_dma);
1983
1984 if (ha->response_ring)
1985 dma_free_coherent(&ha->pdev->dev,
1986 (ha->response_q_length + 1) * sizeof(response_t),
1987 ha->response_ring, ha->response_dma);
1988
1989 if (ha->request_ring)
1990 dma_free_coherent(&ha->pdev->dev,
1991 (ha->request_q_length + 1) * sizeof(request_t),
1992 ha->request_ring, ha->request_dma);
1993
1994 ha->sns_cmd = NULL;
1995 ha->sns_cmd_dma = 0;
1996 ha->ct_sns = NULL;
1997 ha->ct_sns_dma = 0;
1998 ha->ms_iocb = NULL;
1999 ha->ms_iocb_dma = 0;
2000 ha->iodesc_pd = NULL;
2001 ha->iodesc_pd_dma = 0;
2002 ha->init_cb = NULL;
2003 ha->init_cb_dma = 0;
2004
2005 ha->s_dma_pool = NULL;
2006
2007 ha->rlc_rsp = NULL;
2008 ha->rlc_rsp_dma = 0;
2009 ha->gid_list = NULL;
2010 ha->gid_list_dma = 0;
2011
2012 ha->response_ring = NULL;
2013 ha->response_dma = 0;
2014 ha->request_ring = NULL;
2015 ha->request_dma = 0;
2016
2017 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2018 fcport = list_entry(fcpl, fc_port_t, list);
2019
1da177e4
LT		 2020 /* fc ports */
2021 list_del_init(&fcport->list);
2022 kfree(fcport);
2023 }
2024 INIT_LIST_HEAD(&ha->fcports);
2025
2026 if (ha->fw_dump)
2027 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2028
fca29703
AV		 2029 vfree(ha->fw_dump24);
2030
2031 vfree(ha->fw_dump_buffer);
1da177e4
LT		 2032
2033 ha->fw_dump = NULL;
fca29703
AV		 2034 ha->fw_dump24 = NULL;
2035 ha->fw_dumped = 0;
1da177e4
LT		 2036 ha->fw_dump_reading = 0;
2037 ha->fw_dump_buffer = NULL;
2038}
2039
2040/*
2041 * qla2x00_allocate_sp_pool
2042 * This routine is called during initialization to allocate
2043 * memory for local srb_t.
2044 *
2045 * Input:
2046 * ha = adapter block pointer.
2047 *
2048 * Context:
2049 * Kernel context.
fa2a1ce5 2050 *
1da177e4
LT		 2051 * Note: Sets the ref_count for non Null sp to one.
2052 */
2053static int
fa2a1ce5 2054qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
1da177e4
LT		 2055{
2056 int rval;
2057
2058 rval = QLA_SUCCESS;
2059 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2060 mempool_free_slab, srb_cachep);
2061 if (ha->srb_mempool == NULL) {
2062 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2063 rval = QLA_FUNCTION_FAILED;
2064 }
2065 return (rval);
2066}
2067
2068/*
2069 * This routine frees all adapter allocated memory.
fa2a1ce5 2070 *
1da177e4
LT		 2071 */
2072static void
fa2a1ce5 2073qla2x00_free_sp_pool( scsi_qla_host_t *ha)
1da177e4
LT		 2074{
2075 if (ha->srb_mempool) {
2076 mempool_destroy(ha->srb_mempool);
2077 ha->srb_mempool = NULL;
2078 }
2079}
2080
2081/**************************************************************************
2082* qla2x00_do_dpc
2083* This kernel thread is a task that is schedule by the interrupt handler
2084* to perform the background processing for interrupts.
2085*
2086* Notes:
2087* This task always run in the context of a kernel thread. It
2088* is kick-off by the driver's detect code and starts up
2089* up one per adapter. It immediately goes to sleep and waits for
2090* some fibre event. When either the interrupt handler or
2091* the timer routine detects a event it will one of the task
2092* bits then wake us up.
2093**************************************************************************/
2094static int
2095qla2x00_do_dpc(void *data)
2096{
2097 DECLARE_MUTEX_LOCKED(sem);
2098 scsi_qla_host_t *ha;
2099 fc_port_t *fcport;
1da177e4 2100 uint8_t status;
1da177e4 2101 uint16_t next_loopid;
1da177e4
LT		 2102
2103 ha = (scsi_qla_host_t *)data;
2104
2105 lock_kernel();
2106
2107 daemonize("%s_dpc", ha->host_str);
2108 allow_signal(SIGHUP);
2109
2110 ha->dpc_wait = &sem;
2111
2112 set_user_nice(current, -20);
2113
2114 unlock_kernel();
2115
2116 complete(&ha->dpc_inited);
2117
2118 while (1) {
2119 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2120
2121 if (down_interruptible(&sem))
2122 break;
2123
2124 if (ha->dpc_should_die)
2125 break;
2126
2127 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2128
2129 /* Initialization not yet finished. Don't do anything yet. */
2130 if (!ha->flags.init_done || ha->dpc_active)
2131 continue;
2132
2133 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2134
2135 ha->dpc_active = 1;
2136
1da177e4 2137 if (ha->flags.mbox_busy) {
1da177e4
LT		 2138 ha->dpc_active = 0;
2139 continue;
2140 }
2141
2142 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2143
2144 DEBUG(printk("scsi(%ld): dpc: sched "
2145 "qla2x00_abort_isp ha = %p\n",
2146 ha->host_no, ha));
2147 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2148 &ha->dpc_flags))) {
2149
2150 if (qla2x00_abort_isp(ha)) {
2151 /* failed. retry later */
2152 set_bit(ISP_ABORT_NEEDED,
2153 &ha->dpc_flags);
2154 }
2155 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2156 }
2157 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2158 ha->host_no));
2159 }
2160
2161 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2162 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2163
2164 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2165 ha->host_no));
2166
2167 qla2x00_rst_aen(ha);
2168 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2169 }
2170
2171 /* Retry each device up to login retry count */
2172 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2173 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2174 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2175
2176 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2177 ha->host_no));
2178
2179 next_loopid = 0;
2180 list_for_each_entry(fcport, &ha->fcports, list) {
2181 if (fcport->port_type != FCT_TARGET)
2182 continue;
2183
2184 /*
2185 * If the port is not ONLINE then try to login
2186 * to it if we haven't run out of retries.
2187 */
2188 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2189 fcport->login_retry) {
2190
2191 fcport->login_retry--;
2192 if (fcport->flags & FCF_FABRIC_DEVICE) {
2193 if (fcport->flags &
2194 FCF_TAPE_PRESENT)
abbd8870 2195 ha->isp_ops.fabric_logout(
1c7c6357
AV		 2196 ha, fcport->loop_id,
2197 fcport->d_id.b.domain,
2198 fcport->d_id.b.area,
2199 fcport->d_id.b.al_pa);
1da177e4
LT		 2200 status = qla2x00_fabric_login(
2201 ha, fcport, &next_loopid);
2202 } else
2203 status =
2204 qla2x00_local_device_login(
2205 ha, fcport->loop_id);
2206
2207 if (status == QLA_SUCCESS) {
2208 fcport->old_loop_id = fcport->loop_id;
2209
2210 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2211 ha->host_no, fcport->loop_id));
fa2a1ce5 2212
1da177e4
LT		 2213 fcport->port_login_retry_count =
2214 ha->port_down_retry_count * PORT_RETRY_TIME;
2215 atomic_set(&fcport->state, FCS_ONLINE);
2216 atomic_set(&fcport->port_down_timer,
2217 ha->port_down_retry_count * PORT_RETRY_TIME);
2218
2219 fcport->login_retry = 0;
2220 } else if (status == 1) {
2221 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2222 /* retry the login again */
2223 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2224 ha->host_no,
2225 fcport->login_retry, fcport->loop_id));
2226 } else {
2227 fcport->login_retry = 0;
2228 }
2229 }
2230 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2231 break;
2232 }
2233 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2234 ha->host_no));
2235 }
2236
2237 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2238 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2239
2240 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2241 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2242 ha->host_no));
fa2a1ce5 2243
1da177e4
LT		 2244 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2245
2246 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2247 ha->host_no));
2248 }
2249
2250 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2251
2252 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2253 ha->host_no));
2254
2255 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2256 &ha->dpc_flags))) {
2257
2258 qla2x00_loop_resync(ha);
2259
2260 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2261 }
2262
2263 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2264 ha->host_no));
2265 }
2266
1da177e4
LT		 2267 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2268
2269 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2270 ha->host_no));
2271
2272 qla2x00_rescan_fcports(ha);
2273
2274 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2275 "end.\n",
2276 ha->host_no));
2277 }
2278
1da177e4 2279 if (!ha->interrupts_on)
abbd8870 2280 ha->isp_ops.enable_intrs(ha);
1da177e4 2281
1da177e4
LT		 2282 ha->dpc_active = 0;
2283 } /* End of while(1) */
2284
2285 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2286
2287 /*
2288 * Make sure that nobody tries to wake us up again.
2289 */
2290 ha->dpc_wait = NULL;
2291 ha->dpc_active = 0;
2292
2293 complete_and_exit(&ha->dpc_exited, 0);
2294}
2295
1da177e4
LT		 2296/*
2297* qla2x00_rst_aen
2298* Processes asynchronous reset.
2299*
2300* Input:
2301* ha = adapter block pointer.
2302*/
2303static void
fa2a1ce5 2304qla2x00_rst_aen(scsi_qla_host_t *ha)
1da177e4
LT		 2305{
2306 if (ha->flags.online && !ha->flags.reset_active &&
2307 !atomic_read(&ha->loop_down_timer) &&
2308 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2309 do {
2310 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2311
2312 /*
2313 * Issue marker command only when we are going to start
2314 * the I/O.
2315 */
2316 ha->marker_needed = 1;
2317 } while (!atomic_read(&ha->loop_down_timer) &&
2318 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2319 }
2320}
2321
f4f051eb
AV		 2322static void
2323qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2324{
2325 struct scsi_cmnd *cmd = sp->cmd;
2326
2327 if (sp->flags & SRB_DMA_VALID) {
2328 if (cmd->use_sg) {
2329 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2330 cmd->use_sg, cmd->sc_data_direction);
2331 } else if (cmd->request_bufflen) {
2332 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2333 cmd->request_bufflen, cmd->sc_data_direction);
2334 }
2335 sp->flags &= ~SRB_DMA_VALID;
2336 }
fca29703 2337 CMD_SP(cmd) = NULL;
f4f051eb
AV		 2338}
2339
2340void
2341qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2342{
2343 struct scsi_cmnd *cmd = sp->cmd;
2344
2345 qla2x00_sp_free_dma(ha, sp);
2346
f4f051eb
AV		 2347 mempool_free(sp, ha->srb_mempool);
2348
2349 cmd->scsi_done(cmd);
2350}
bdf79621 2351
1da177e4
LT		 2352/**************************************************************************
2353* qla2x00_timer
2354*
2355* Description:
2356* One second timer
2357*
2358* Context: Interrupt
2359***************************************************************************/
2360static void
2361qla2x00_timer(scsi_qla_host_t *ha)
2362{
1da177e4
LT		 2363 unsigned long cpu_flags = 0;
2364 fc_port_t *fcport;
1da177e4
LT		 2365 int start_dpc = 0;
2366 int index;
2367 srb_t *sp;
f4f051eb 2368 int t;
1da177e4
LT		 2369
2370 /*
2371 * Ports - Port down timer.
2372 *
2373 * Whenever, a port is in the LOST state we start decrementing its port
2374 * down timer every second until it reaches zero. Once it reaches zero
fa2a1ce5 2375 * the port it marked DEAD.
1da177e4
LT		 2376 */
2377 t = 0;
2378 list_for_each_entry(fcport, &ha->fcports, list) {
2379 if (fcport->port_type != FCT_TARGET)
2380 continue;
2381
2382 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2383
2384 if (atomic_read(&fcport->port_down_timer) == 0)
2385 continue;
2386
fa2a1ce5 2387 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
1da177e4 2388 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
fa2a1ce5 2389
1da177e4 2390 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
fca29703 2391 "%d remaining\n",
1da177e4
LT		 2392 ha->host_no,
2393 t, atomic_read(&fcport->port_down_timer)));
2394 }
2395 t++;
2396 } /* End of for fcport */
2397
1da177e4
LT		 2398
2399 /* Loop down handler. */
2400 if (atomic_read(&ha->loop_down_timer) > 0 &&
2401 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2402
2403 if (atomic_read(&ha->loop_down_timer) ==
2404 ha->loop_down_abort_time) {
2405
2406 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2407 "queues before time expire\n",
2408 ha->host_no));
2409
2410 if (!IS_QLA2100(ha) && ha->link_down_timeout)
fa2a1ce5 2411 atomic_set(&ha->loop_state, LOOP_DEAD);
1da177e4
LT		 2412
2413 /* Schedule an ISP abort to return any tape commands. */
2414 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2415 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2416 index++) {
bdf79621
AV		 2417 fc_port_t *sfcp;
2418
1da177e4
LT		 2419 sp = ha->outstanding_cmds[index];
2420 if (!sp)
2421 continue;
bdf79621
AV		 2422 sfcp = sp->fcport;
2423 if (!(sfcp->flags & FCF_TAPE_PRESENT))
1da177e4
LT		 2424 continue;
2425
2426 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2427 break;
2428 }
2429 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2430
2431 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2432 start_dpc++;
2433 }
2434
2435 /* if the loop has been down for 4 minutes, reinit adapter */
2436 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2437 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2438 "restarting queues.\n",
2439 ha->host_no));
2440
2441 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2442 start_dpc++;
2443
2444 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2445 DEBUG(printk("scsi(%ld): Loop down - "
2446 "aborting ISP.\n",
2447 ha->host_no));
2448 qla_printk(KERN_WARNING, ha,
2449 "Loop down - aborting ISP.\n");
2450
2451 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2452 }
2453 }
fca29703 2454 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
1da177e4
LT		 2455 ha->host_no,
2456 atomic_read(&ha->loop_down_timer)));
2457 }
2458
1da177e4
LT		 2459 /* Schedule the DPC routine if needed */
2460 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2461 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
2462 start_dpc ||
2463 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
f4f051eb 2464 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
1da177e4
LT		 2465 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2466 ha->dpc_wait && !ha->dpc_active) {
2467
2468 up(ha->dpc_wait);
2469 }
2470
2471 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2472}
2473
1da177e4
LT		 2474/* XXX(hch): crude hack to emulate a down_timeout() */
2475int
2476qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2477{
2478 const unsigned int step = HZ/10;
2479
2480 do {
2481 if (!down_trylock(sema))
2482 return 0;
2483 set_current_state(TASK_INTERRUPTIBLE);
2484 if (schedule_timeout(step))
2485 break;
2486 } while ((timeout -= step) > 0);
2487
2488 return -ETIMEDOUT;
2489}
2490
fca29703
AV		 2491static struct qla_board_info qla_board_tbl[] = {
2492 {
2493 .drv_name = "qla2400",
2494 .isp_name = "ISP2422",
2495 .fw_fname = "ql2400_fw.bin",
2496 .sht = &qla24xx_driver_template,
2497 },
2498 {
2499 .drv_name = "qla2400",
2500 .isp_name = "ISP2432",
2501 .fw_fname = "ql2400_fw.bin",
2502 .sht = &qla24xx_driver_template,
2503 },
2504};
2505
2506static struct pci_device_id qla2xxx_pci_tbl[] = {
2507 {
2508 .vendor = PCI_VENDOR_ID_QLOGIC,
2509 .device = PCI_DEVICE_ID_QLOGIC_ISP2422,
2510 .subvendor = PCI_ANY_ID,
2511 .subdevice = PCI_ANY_ID,
2512 .driver_data = (unsigned long)&qla_board_tbl[0],
2513 },
2514 {
2515 .vendor = PCI_VENDOR_ID_QLOGIC,
2516 .device = PCI_DEVICE_ID_QLOGIC_ISP2432,
2517 .subvendor = PCI_ANY_ID,
2518 .subdevice = PCI_ANY_ID,
2519 .driver_data = (unsigned long)&qla_board_tbl[1],
2520 },
2521 {0, 0},
2522};
2523MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2524
2525static int __devinit
2526qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2527{
2528 return qla2x00_probe_one(pdev,
2529 (struct qla_board_info *)id->driver_data);
2530}
2531
2532static void __devexit
2533qla2xxx_remove_one(struct pci_dev *pdev)
2534{
2535 qla2x00_remove_one(pdev);
2536}
2537
2538static struct pci_driver qla2xxx_pci_driver = {
2539 .name = "qla2xxx",
2540 .id_table = qla2xxx_pci_tbl,
2541 .probe = qla2xxx_probe_one,
2542 .remove = __devexit_p(qla2xxx_remove_one),
2543};
2544
1da177e4
LT		 2545/**
2546 * qla2x00_module_init - Module initialization.
2547 **/
2548static int __init
2549qla2x00_module_init(void)
2550{
fca29703
AV		 2551 int ret = 0;
2552
1da177e4 2553 /* Allocate cache for SRBs. */
354d6b21 2554 srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
1da177e4
LT		 2555 SLAB_HWCACHE_ALIGN, NULL, NULL);
2556 if (srb_cachep == NULL) {
2557 printk(KERN_ERR
2558 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2559 return -ENOMEM;
2560 }
2561
2562 /* Derive version string. */
2563 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
2564#if DEBUG_QLA2100
2565 strcat(qla2x00_version_str, "-debug");
2566#endif
1c97a12a
AV		 2567 qla2xxx_transport_template =
2568 fc_attach_transport(&qla2xxx_transport_functions);
1da177e4
LT		 2569 if (!qla2xxx_transport_template)
2570 return -ENODEV;
2571
2572 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
fca29703
AV		 2573 ret = pci_module_init(&qla2xxx_pci_driver);
2574 if (ret) {
2575 kmem_cache_destroy(srb_cachep);
2576 fc_release_transport(qla2xxx_transport_template);
2577 }
2578 return ret;
1da177e4
LT		 2579}
2580
2581/**
2582 * qla2x00_module_exit - Module cleanup.
2583 **/
2584static void __exit
2585qla2x00_module_exit(void)
2586{
fca29703 2587 pci_unregister_driver(&qla2xxx_pci_driver);
354d6b21 2588 kmem_cache_destroy(srb_cachep);
1da177e4
LT		 2589 fc_release_transport(qla2xxx_transport_template);
2590}
2591
2592module_init(qla2x00_module_init);
2593module_exit(qla2x00_module_exit);
2594
2595MODULE_AUTHOR("QLogic Corporation");
2596MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2597MODULE_LICENSE("GPL");
2598MODULE_VERSION(QLA2XXX_VERSION);
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