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[SCSI] qla2xxx: Correct synchronization issues during rport addition/deletion.
[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_os.c
CommitLineData
1da177e4 1/*
fa90c54f
AV		 2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2005 QLogic Corporation
1da177e4 4 *
fa90c54f 5 * See LICENSE.qla2xxx for copyright and licensing details.
1da177e4
LT		 6 */
7#include "qla_def.h"
8
9#include <linux/moduleparam.h>
10#include <linux/vmalloc.h>
11#include <linux/smp_lock.h>
12#include <linux/delay.h>
13
14#include <scsi/scsi_tcq.h>
15#include <scsi/scsicam.h>
16#include <scsi/scsi_transport.h>
17#include <scsi/scsi_transport_fc.h>
18
19/*
20 * Driver version
21 */
22char qla2x00_version_str[40];
23
24/*
25 * SRB allocation cache
26 */
354d6b21 27static kmem_cache_t *srb_cachep;
1da177e4
LT		 28
29/*
30 * Ioctl related information.
31 */
354d6b21 32static int num_hosts;
1da177e4
LT		 33
34int ql2xlogintimeout = 20;
35module_param(ql2xlogintimeout, int, S_IRUGO|S_IRUSR);
36MODULE_PARM_DESC(ql2xlogintimeout,
37 "Login timeout value in seconds.");
38
8482e118 39int qlport_down_retry = 30;
1da177e4
LT		 40module_param(qlport_down_retry, int, S_IRUGO|S_IRUSR);
41MODULE_PARM_DESC(qlport_down_retry,
42 "Maximum number of command retries to a port that returns"
43 "a PORT-DOWN status.");
44
1da177e4
LT		 45int ql2xplogiabsentdevice;
46module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql2xplogiabsentdevice,
48 "Option to enable PLOGI to devices that are not present after "
49 "a Fabric scan. This is needed for several broken switches."
50 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
51
1da177e4
LT		 52int ql2xloginretrycount = 0;
53module_param(ql2xloginretrycount, int, S_IRUGO|S_IRUSR);
54MODULE_PARM_DESC(ql2xloginretrycount,
55 "Specify an alternate value for the NVRAM login retry count.");
56
331e3476
AV		 57#if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
58int ql2xfwloadflash;
59module_param(ql2xfwloadflash, int, S_IRUGO|S_IRUSR);
60MODULE_PARM_DESC(ql2xfwloadflash,
61 "Load ISP24xx firmware image from FLASH (onboard memory).");
62#endif
63
1da177e4
LT		 64static void qla2x00_free_device(scsi_qla_host_t *);
65
66static void qla2x00_config_dma_addressing(scsi_qla_host_t *ha);
67
cca5335c
AV		 68int ql2xfdmienable;
69module_param(ql2xfdmienable, int, S_IRUGO|S_IRUSR);
70MODULE_PARM_DESC(ql2xfdmienable,
71 "Enables FDMI registratons "
72 "Default is 0 - no FDMI. 1 - perfom FDMI.");
73
79f89a42 74int ql2xprocessrscn;
75module_param(ql2xprocessrscn, int, S_IRUGO|S_IRUSR);
76MODULE_PARM_DESC(ql2xprocessrscn,
77 "Option to enable port RSCN handling via a series of less"
78 "fabric intrusive ADISCs and PLOGIs.");
79
1da177e4 80/*
fa2a1ce5 81 * SCSI host template entry points
1da177e4
LT		 82 */
83static int qla2xxx_slave_configure(struct scsi_device * device);
f4f051eb 84static int qla2xxx_slave_alloc(struct scsi_device *);
85static void qla2xxx_slave_destroy(struct scsi_device *);
1da177e4
LT		 86static int qla2x00_queuecommand(struct scsi_cmnd *cmd,
87 void (*fn)(struct scsi_cmnd *));
fca29703
AV		 88static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
89 void (*fn)(struct scsi_cmnd *));
1da177e4
LT		 90static int qla2xxx_eh_abort(struct scsi_cmnd *);
91static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
92static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
93static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
94static int qla2x00_loop_reset(scsi_qla_host_t *ha);
95static int qla2x00_device_reset(scsi_qla_host_t *, fc_port_t *);
96
ce7e4af7
AV		 97static int qla2x00_change_queue_depth(struct scsi_device *, int);
98static int qla2x00_change_queue_type(struct scsi_device *, int);
99
1da177e4
LT		 100static struct scsi_host_template qla2x00_driver_template = {
101 .module = THIS_MODULE,
102 .name = "qla2xxx",
1da177e4
LT		 103 .queuecommand = qla2x00_queuecommand,
104
105 .eh_abort_handler = qla2xxx_eh_abort,
106 .eh_device_reset_handler = qla2xxx_eh_device_reset,
107 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
108 .eh_host_reset_handler = qla2xxx_eh_host_reset,
109
110 .slave_configure = qla2xxx_slave_configure,
111
f4f051eb 112 .slave_alloc = qla2xxx_slave_alloc,
113 .slave_destroy = qla2xxx_slave_destroy,
ce7e4af7
AV		 114 .change_queue_depth = qla2x00_change_queue_depth,
115 .change_queue_type = qla2x00_change_queue_type,
1da177e4
LT		 116 .this_id = -1,
117 .cmd_per_lun = 3,
118 .use_clustering = ENABLE_CLUSTERING,
119 .sg_tablesize = SG_ALL,
120
121 /*
122 * The RISC allows for each command to transfer (2^32-1) bytes of data,
123 * which equates to 0x800000 sectors.
124 */
125 .max_sectors = 0xFFFF,
afb046e2 126 .shost_attrs = qla2x00_host_attrs,
1da177e4
LT		 127};
128
fca29703
AV		 129static struct scsi_host_template qla24xx_driver_template = {
130 .module = THIS_MODULE,
131 .name = "qla2xxx",
132 .queuecommand = qla24xx_queuecommand,
133
134 .eh_abort_handler = qla2xxx_eh_abort,
135 .eh_device_reset_handler = qla2xxx_eh_device_reset,
136 .eh_bus_reset_handler = qla2xxx_eh_bus_reset,
137 .eh_host_reset_handler = qla2xxx_eh_host_reset,
138
139 .slave_configure = qla2xxx_slave_configure,
140
141 .slave_alloc = qla2xxx_slave_alloc,
142 .slave_destroy = qla2xxx_slave_destroy,
ce7e4af7
AV		 143 .change_queue_depth = qla2x00_change_queue_depth,
144 .change_queue_type = qla2x00_change_queue_type,
fca29703
AV		 145 .this_id = -1,
146 .cmd_per_lun = 3,
147 .use_clustering = ENABLE_CLUSTERING,
148 .sg_tablesize = SG_ALL,
149
150 .max_sectors = 0xFFFF,
afb046e2 151 .shost_attrs = qla2x00_host_attrs,
fca29703
AV		 152};
153
1da177e4
LT		 154static struct scsi_transport_template *qla2xxx_transport_template = NULL;
155
1da177e4
LT		 156/* TODO Convert to inlines
157 *
158 * Timer routines
159 */
160#define WATCH_INTERVAL 1 /* number of seconds */
161
162static void qla2x00_timer(scsi_qla_host_t *);
163
164static __inline__ void qla2x00_start_timer(scsi_qla_host_t *,
165 void *, unsigned long);
166static __inline__ void qla2x00_restart_timer(scsi_qla_host_t *, unsigned long);
167static __inline__ void qla2x00_stop_timer(scsi_qla_host_t *);
168
169static inline void
170qla2x00_start_timer(scsi_qla_host_t *ha, void *func, unsigned long interval)
171{
172 init_timer(&ha->timer);
173 ha->timer.expires = jiffies + interval * HZ;
174 ha->timer.data = (unsigned long)ha;
175 ha->timer.function = (void (*)(unsigned long))func;
176 add_timer(&ha->timer);
177 ha->timer_active = 1;
178}
179
180static inline void
181qla2x00_restart_timer(scsi_qla_host_t *ha, unsigned long interval)
182{
183 mod_timer(&ha->timer, jiffies + interval * HZ);
184}
185
186static __inline__ void
187qla2x00_stop_timer(scsi_qla_host_t *ha)
188{
189 del_timer_sync(&ha->timer);
190 ha->timer_active = 0;
191}
192
1da177e4
LT		 193static int qla2x00_do_dpc(void *data);
194
195static void qla2x00_rst_aen(scsi_qla_host_t *);
196
197static uint8_t qla2x00_mem_alloc(scsi_qla_host_t *);
198static void qla2x00_mem_free(scsi_qla_host_t *ha);
199static int qla2x00_allocate_sp_pool( scsi_qla_host_t *ha);
200static void qla2x00_free_sp_pool(scsi_qla_host_t *ha);
f4f051eb 201static void qla2x00_sp_free_dma(scsi_qla_host_t *, srb_t *);
202void qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *);
1da177e4 203
1da177e4
LT		 204/* -------------------------------------------------------------------------- */
205
1da177e4 206static char *
abbd8870 207qla2x00_pci_info_str(struct scsi_qla_host *ha, char *str)
1da177e4
LT		 208{
209 static char *pci_bus_modes[] = {
210 "33", "66", "100", "133",
211 };
212 uint16_t pci_bus;
213
214 strcpy(str, "PCI");
215 pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
216 if (pci_bus) {
217 strcat(str, "-X (");
218 strcat(str, pci_bus_modes[pci_bus]);
219 } else {
220 pci_bus = (ha->pci_attr & BIT_8) >> 8;
221 strcat(str, " (");
222 strcat(str, pci_bus_modes[pci_bus]);
223 }
224 strcat(str, " MHz)");
225
226 return (str);
227}
228
fca29703
AV		 229static char *
230qla24xx_pci_info_str(struct scsi_qla_host *ha, char *str)
231{
232 static char *pci_bus_modes[] = { "33", "66", "100", "133", };
233 uint32_t pci_bus;
234 int pcie_reg;
235
236 pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
237 if (pcie_reg) {
238 char lwstr[6];
239 uint16_t pcie_lstat, lspeed, lwidth;
240
241 pcie_reg += 0x12;
242 pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
243 lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
244 lwidth = (pcie_lstat &
245 (BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
246
247 strcpy(str, "PCIe (");
248 if (lspeed == 1)
249 strcat(str, "2.5Gb/s ");
250 else
251 strcat(str, "<unknown> ");
252 snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
253 strcat(str, lwstr);
254
255 return str;
256 }
257
258 strcpy(str, "PCI");
259 pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
260 if (pci_bus == 0 || pci_bus == 8) {
261 strcat(str, " (");
262 strcat(str, pci_bus_modes[pci_bus >> 3]);
263 } else {
264 strcat(str, "-X ");
265 if (pci_bus & BIT_2)
266 strcat(str, "Mode 2");
267 else
268 strcat(str, "Mode 1");
269 strcat(str, " (");
270 strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
271 }
272 strcat(str, " MHz)");
273
274 return str;
275}
276
1da177e4 277char *
abbd8870 278qla2x00_fw_version_str(struct scsi_qla_host *ha, char *str)
1da177e4
LT		 279{
280 char un_str[10];
fa2a1ce5 281
1da177e4
LT		 282 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
283 ha->fw_minor_version,
284 ha->fw_subminor_version);
285
286 if (ha->fw_attributes & BIT_9) {
287 strcat(str, "FLX");
288 return (str);
289 }
290
291 switch (ha->fw_attributes & 0xFF) {
292 case 0x7:
293 strcat(str, "EF");
294 break;
295 case 0x17:
296 strcat(str, "TP");
297 break;
298 case 0x37:
299 strcat(str, "IP");
300 break;
301 case 0x77:
302 strcat(str, "VI");
303 break;
304 default:
305 sprintf(un_str, "(%x)", ha->fw_attributes);
306 strcat(str, un_str);
307 break;
308 }
309 if (ha->fw_attributes & 0x100)
310 strcat(str, "X");
311
312 return (str);
313}
314
fca29703
AV		 315char *
316qla24xx_fw_version_str(struct scsi_qla_host *ha, char *str)
317{
f0883ac6
AV		 318 sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
319 ha->fw_minor_version,
320 ha->fw_subminor_version);
321
fca29703
AV		 322 if (ha->fw_attributes & BIT_0)
323 strcat(str, "[Class 2] ");
324 if (ha->fw_attributes & BIT_1)
325 strcat(str, "[IP] ");
326 if (ha->fw_attributes & BIT_2)
327 strcat(str, "[Multi-ID] ");
328 if (ha->fw_attributes & BIT_13)
329 strcat(str, "[Experimental]");
330 return str;
fca29703
AV		 331}
332
333static inline srb_t *
334qla2x00_get_new_sp(scsi_qla_host_t *ha, fc_port_t *fcport,
335 struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
336{
337 srb_t *sp;
338
339 sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
340 if (!sp)
341 return sp;
342
343 atomic_set(&sp->ref_count, 1);
344 sp->ha = ha;
345 sp->fcport = fcport;
346 sp->cmd = cmd;
347 sp->flags = 0;
348 CMD_SP(cmd) = (void *)sp;
349 cmd->scsi_done = done;
350
351 return sp;
352}
353
1da177e4 354static int
f4f051eb 355qla2x00_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
1da177e4 356{
f4f051eb 357 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 358 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
19a7b4ae 359 struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
f4f051eb 360 srb_t *sp;
361 int rval;
1da177e4 362
19a7b4ae
JSEC		 363 rval = fc_remote_port_chkready(rport);
364 if (rval) {
365 cmd->result = rval;
f4f051eb 366 goto qc_fail_command;
367 }
1da177e4 368
f4f051eb 369 if (atomic_read(&fcport->state) != FCS_ONLINE) {
370 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
371 atomic_read(&ha->loop_state) == LOOP_DEAD) {
372 cmd->result = DID_NO_CONNECT << 16;
373 goto qc_fail_command;
374 }
375 goto qc_host_busy;
376 }
1da177e4
LT		 377
378 spin_unlock_irq(ha->host->host_lock);
379
fca29703
AV		 380 sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
381 if (!sp)
f4f051eb 382 goto qc_host_busy_lock;
1da177e4 383
f4f051eb 384 rval = qla2x00_start_scsi(sp);
385 if (rval != QLA_SUCCESS)
386 goto qc_host_busy_free_sp;
1da177e4 387
f4f051eb 388 spin_lock_irq(ha->host->host_lock);
1da177e4 389
f4f051eb 390 return 0;
1da177e4 391
f4f051eb 392qc_host_busy_free_sp:
393 qla2x00_sp_free_dma(ha, sp);
f4f051eb 394 mempool_free(sp, ha->srb_mempool);
1da177e4 395
f4f051eb 396qc_host_busy_lock:
397 spin_lock_irq(ha->host->host_lock);
1da177e4 398
f4f051eb 399qc_host_busy:
400 return SCSI_MLQUEUE_HOST_BUSY;
1da177e4 401
f4f051eb 402qc_fail_command:
403 done(cmd);
1da177e4 404
f4f051eb 405 return 0;
1da177e4
LT		 406}
407
fca29703
AV		 408
409static int
410qla24xx_queuecommand(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *))
411{
412 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
413 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
19a7b4ae 414 struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
fca29703
AV		 415 srb_t *sp;
416 int rval;
417
19a7b4ae
JSEC		 418 rval = fc_remote_port_chkready(rport);
419 if (rval) {
420 cmd->result = rval;
fca29703
AV		 421 goto qc24_fail_command;
422 }
423
424 if (atomic_read(&fcport->state) != FCS_ONLINE) {
425 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
426 atomic_read(&ha->loop_state) == LOOP_DEAD) {
427 cmd->result = DID_NO_CONNECT << 16;
428 goto qc24_fail_command;
429 }
430 goto qc24_host_busy;
431 }
432
433 spin_unlock_irq(ha->host->host_lock);
434
435 sp = qla2x00_get_new_sp(ha, fcport, cmd, done);
436 if (!sp)
437 goto qc24_host_busy_lock;
438
439 rval = qla24xx_start_scsi(sp);
440 if (rval != QLA_SUCCESS)
441 goto qc24_host_busy_free_sp;
442
443 spin_lock_irq(ha->host->host_lock);
444
445 return 0;
446
447qc24_host_busy_free_sp:
448 qla2x00_sp_free_dma(ha, sp);
449 mempool_free(sp, ha->srb_mempool);
450
451qc24_host_busy_lock:
452 spin_lock_irq(ha->host->host_lock);
453
454qc24_host_busy:
455 return SCSI_MLQUEUE_HOST_BUSY;
456
457qc24_fail_command:
458 done(cmd);
459
460 return 0;
461}
462
463
1da177e4
LT		 464/*
465 * qla2x00_eh_wait_on_command
466 * Waits for the command to be returned by the Firmware for some
467 * max time.
468 *
469 * Input:
470 * ha = actual ha whose done queue will contain the command
471 * returned by firmware.
472 * cmd = Scsi Command to wait on.
473 * flag = Abort/Reset(Bus or Device Reset)
474 *
475 * Return:
476 * Not Found : 0
477 * Found : 1
478 */
479static int
480qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
481{
fe74c71f
AV		 482#define ABORT_POLLING_PERIOD 1000
483#define ABORT_WAIT_ITER ((10 * 1000) / (ABORT_POLLING_PERIOD))
f4f051eb 484 unsigned long wait_iter = ABORT_WAIT_ITER;
485 int ret = QLA_SUCCESS;
1da177e4 486
f4f051eb 487 while (CMD_SP(cmd)) {
fe74c71f 488 msleep(ABORT_POLLING_PERIOD);
1da177e4 489
f4f051eb 490 if (--wait_iter)
491 break;
492 }
493 if (CMD_SP(cmd))
494 ret = QLA_FUNCTION_FAILED;
1da177e4 495
f4f051eb 496 return ret;
1da177e4
LT		 497}
498
499/*
500 * qla2x00_wait_for_hba_online
fa2a1ce5 501 * Wait till the HBA is online after going through
1da177e4
LT		 502 * <= MAX_RETRIES_OF_ISP_ABORT or
503 * finally HBA is disabled ie marked offline
504 *
505 * Input:
506 * ha - pointer to host adapter structure
fa2a1ce5
AV		 507 *
508 * Note:
1da177e4
LT		 509 * Does context switching-Release SPIN_LOCK
510 * (if any) before calling this routine.
511 *
512 * Return:
513 * Success (Adapter is online) : 0
514 * Failed (Adapter is offline/disabled) : 1
515 */
fa2a1ce5 516static int
1da177e4
LT		 517qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
518{
fca29703
AV		 519 int return_status;
520 unsigned long wait_online;
1da177e4 521
fa2a1ce5 522 wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
1da177e4
LT		 523 while (((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) ||
524 test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
525 test_bit(ISP_ABORT_RETRY, &ha->dpc_flags) ||
526 ha->dpc_active) && time_before(jiffies, wait_online)) {
527
528 msleep(1000);
529 }
fa2a1ce5
AV		 530 if (ha->flags.online)
531 return_status = QLA_SUCCESS;
1da177e4
LT		 532 else
533 return_status = QLA_FUNCTION_FAILED;
534
535 DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
536
537 return (return_status);
538}
539
540/*
541 * qla2x00_wait_for_loop_ready
542 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
fa2a1ce5 543 * to be in LOOP_READY state.
1da177e4
LT		 544 * Input:
545 * ha - pointer to host adapter structure
fa2a1ce5
AV		 546 *
547 * Note:
1da177e4
LT		 548 * Does context switching-Release SPIN_LOCK
549 * (if any) before calling this routine.
fa2a1ce5 550 *
1da177e4
LT		 551 *
552 * Return:
553 * Success (LOOP_READY) : 0
554 * Failed (LOOP_NOT_READY) : 1
555 */
fa2a1ce5 556static inline int
1da177e4
LT		 557qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha)
558{
559 int return_status = QLA_SUCCESS;
560 unsigned long loop_timeout ;
561
562 /* wait for 5 min at the max for loop to be ready */
fa2a1ce5 563 loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
1da177e4
LT		 564
565 while ((!atomic_read(&ha->loop_down_timer) &&
566 atomic_read(&ha->loop_state) == LOOP_DOWN) ||
1da177e4
LT		 567 atomic_read(&ha->loop_state) != LOOP_READY) {
568 msleep(1000);
569 if (time_after_eq(jiffies, loop_timeout)) {
570 return_status = QLA_FUNCTION_FAILED;
571 break;
572 }
573 }
fa2a1ce5 574 return (return_status);
1da177e4
LT		 575}
576
577/**************************************************************************
578* qla2xxx_eh_abort
579*
580* Description:
581* The abort function will abort the specified command.
582*
583* Input:
584* cmd = Linux SCSI command packet to be aborted.
585*
586* Returns:
587* Either SUCCESS or FAILED.
588*
589* Note:
590**************************************************************************/
591int
592qla2xxx_eh_abort(struct scsi_cmnd *cmd)
593{
f4f051eb 594 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
595 srb_t *sp;
596 int ret, i;
597 unsigned int id, lun;
598 unsigned long serial;
18e144d3 599 unsigned long flags;
1da177e4 600
f4f051eb 601 if (!CMD_SP(cmd))
602 return FAILED;
1da177e4 603
f4f051eb 604 ret = FAILED;
1da177e4 605
f4f051eb 606 id = cmd->device->id;
607 lun = cmd->device->lun;
608 serial = cmd->serial_number;
1da177e4 609
f4f051eb 610 /* Check active list for command command. */
18e144d3 611 spin_lock_irqsave(&ha->hardware_lock, flags);
f4f051eb 612 for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
613 sp = ha->outstanding_cmds[i];
1da177e4 614
f4f051eb 615 if (sp == NULL)
616 continue;
1da177e4 617
f4f051eb 618 if (sp->cmd != cmd)
619 continue;
1da177e4 620
f4f051eb 621 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
622 "sp->state=%x\n", __func__, ha->host_no, sp, serial,
623 sp->state));
624 DEBUG3(qla2x00_print_scsi_cmd(cmd);)
1da177e4 625
18e144d3 626 spin_unlock_irqrestore(&ha->hardware_lock, flags);
abbd8870 627 if (ha->isp_ops.abort_command(ha, sp)) {
f4f051eb 628 DEBUG2(printk("%s(%ld): abort_command "
629 "mbx failed.\n", __func__, ha->host_no));
630 } else {
631 DEBUG3(printk("%s(%ld): abort_command "
632 "mbx success.\n", __func__, ha->host_no));
633 ret = SUCCESS;
634 }
18e144d3 635 spin_lock_irqsave(&ha->hardware_lock, flags);
1da177e4 636
f4f051eb 637 break;
638 }
18e144d3 639 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4 640
f4f051eb 641 /* Wait for the command to be returned. */
642 if (ret == SUCCESS) {
f4f051eb 643 if (qla2x00_eh_wait_on_command(ha, cmd) != QLA_SUCCESS) {
fa2a1ce5 644 qla_printk(KERN_ERR, ha,
f4f051eb 645 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
646 "%x.\n", ha->host_no, id, lun, serial, ret);
647 }
1da177e4 648 }
1da177e4 649
fa2a1ce5 650 qla_printk(KERN_INFO, ha,
f4f051eb 651 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha->host_no,
652 id, lun, serial, ret);
1da177e4 653
f4f051eb 654 return ret;
655}
1da177e4 656
f4f051eb 657/**************************************************************************
658* qla2x00_eh_wait_for_pending_target_commands
659*
660* Description:
661* Waits for all the commands to come back from the specified target.
662*
663* Input:
664* ha - pointer to scsi_qla_host structure.
fa2a1ce5 665* t - target
f4f051eb 666* Returns:
667* Either SUCCESS or FAILED.
668*
669* Note:
670**************************************************************************/
671static int
672qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
673{
674 int cnt;
675 int status;
676 srb_t *sp;
677 struct scsi_cmnd *cmd;
18e144d3 678 unsigned long flags;
1da177e4 679
f4f051eb 680 status = 0;
1da177e4
LT		 681
682 /*
f4f051eb 683 * Waiting for all commands for the designated target in the active
684 * array
1da177e4
LT		 685 */
686 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
18e144d3 687 spin_lock_irqsave(&ha->hardware_lock, flags);
1da177e4
LT		 688 sp = ha->outstanding_cmds[cnt];
689 if (sp) {
690 cmd = sp->cmd;
18e144d3 691 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 692 if (cmd->device->id == t) {
693 if (!qla2x00_eh_wait_on_command(ha, cmd)) {
694 status = 1;
695 break;
696 }
697 }
f4f051eb 698 } else {
18e144d3 699 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 700 }
701 }
702 return (status);
703}
704
705
706/**************************************************************************
707* qla2xxx_eh_device_reset
708*
709* Description:
710* The device reset function will reset the target and abort any
711* executing commands.
712*
713* NOTE: The use of SP is undefined within this context. Do *NOT*
fa2a1ce5 714* attempt to use this value, even if you determine it is
1da177e4
LT		 715* non-null.
716*
717* Input:
718* cmd = Linux SCSI command packet of the command that cause the
719* bus device reset.
720*
721* Returns:
722* SUCCESS/FAILURE (defined as macro in scsi.h).
723*
724**************************************************************************/
725int
726qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
727{
f4f051eb 728 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 729 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051eb 730 srb_t *sp;
731 int ret;
732 unsigned int id, lun;
733 unsigned long serial;
1da177e4 734
f4f051eb 735 ret = FAILED;
1da177e4 736
f4f051eb 737 id = cmd->device->id;
738 lun = cmd->device->lun;
739 serial = cmd->serial_number;
1da177e4 740
f4f051eb 741 sp = (srb_t *) CMD_SP(cmd);
bdf79621 742 if (!sp || !fcport)
f4f051eb 743 return ret;
1da177e4
LT		 744
745 qla_printk(KERN_INFO, ha,
f4f051eb 746 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4 747
94d0e7b8 748 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
1da177e4 749 goto eh_dev_reset_done;
1da177e4
LT		 750
751 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051eb 752 if (qla2x00_device_reset(ha, fcport) == 0)
753 ret = SUCCESS;
1da177e4
LT		 754
755#if defined(LOGOUT_AFTER_DEVICE_RESET)
f4f051eb 756 if (ret == SUCCESS) {
757 if (fcport->flags & FC_FABRIC_DEVICE) {
abbd8870 758 ha->isp_ops.fabric_logout(ha, fcport->loop_id);
d97994dc 759 qla2x00_mark_device_lost(ha, fcport, 0, 0);
1da177e4
LT		 760 }
761 }
762#endif
763 } else {
764 DEBUG2(printk(KERN_INFO
765 "%s failed: loop not ready\n",__func__);)
766 }
767
f4f051eb 768 if (ret == FAILED) {
1da177e4
LT		 769 DEBUG3(printk("%s(%ld): device reset failed\n",
770 __func__, ha->host_no));
771 qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
772 __func__);
773
774 goto eh_dev_reset_done;
775 }
776
9a41a62b
AV		 777 /* Flush outstanding commands. */
778 if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
779 ret = FAILED;
780 if (ret == FAILED) {
781 DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
782 __func__, ha->host_no));
783 qla_printk(KERN_INFO, ha,
784 "%s: failed while waiting for commands\n", __func__);
785 } else
786 qla_printk(KERN_INFO, ha,
787 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
788 id, lun);
28f22b03 789 eh_dev_reset_done:
f4f051eb 790 return ret;
1da177e4
LT		 791}
792
793/**************************************************************************
794* qla2x00_eh_wait_for_pending_commands
795*
796* Description:
797* Waits for all the commands to come back from the specified host.
798*
799* Input:
800* ha - pointer to scsi_qla_host structure.
801*
802* Returns:
803* 1 : SUCCESS
804* 0 : FAILED
805*
806* Note:
807**************************************************************************/
808static int
809qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
810{
811 int cnt;
812 int status;
813 srb_t *sp;
814 struct scsi_cmnd *cmd;
18e144d3 815 unsigned long flags;
1da177e4
LT		 816
817 status = 1;
818
819 /*
820 * Waiting for all commands for the designated target in the active
821 * array
822 */
823 for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
18e144d3 824 spin_lock_irqsave(&ha->hardware_lock, flags);
1da177e4
LT		 825 sp = ha->outstanding_cmds[cnt];
826 if (sp) {
827 cmd = sp->cmd;
18e144d3 828 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 829 status = qla2x00_eh_wait_on_command(ha, cmd);
830 if (status == 0)
831 break;
832 }
833 else {
18e144d3 834 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1da177e4
LT		 835 }
836 }
837 return (status);
838}
839
840
841/**************************************************************************
842* qla2xxx_eh_bus_reset
843*
844* Description:
845* The bus reset function will reset the bus and abort any executing
846* commands.
847*
848* Input:
849* cmd = Linux SCSI command packet of the command that cause the
850* bus reset.
851*
852* Returns:
853* SUCCESS/FAILURE (defined as macro in scsi.h).
854*
855**************************************************************************/
856int
857qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
858{
f4f051eb 859 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 860 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
1da177e4 861 srb_t *sp;
f4f051eb 862 int ret;
863 unsigned int id, lun;
864 unsigned long serial;
865
866 ret = FAILED;
867
868 id = cmd->device->id;
869 lun = cmd->device->lun;
870 serial = cmd->serial_number;
1da177e4 871
1da177e4 872 sp = (srb_t *) CMD_SP(cmd);
bdf79621 873 if (!sp || !fcport)
f4f051eb 874 return ret;
1da177e4
LT		 875
876 qla_printk(KERN_INFO, ha,
f4f051eb 877 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4 878
1da177e4
LT		 879 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS) {
880 DEBUG2(printk("%s failed:board disabled\n",__func__));
f4f051eb 881 goto eh_bus_reset_done;
1da177e4
LT		 882 }
883
884 if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
f4f051eb 885 if (qla2x00_loop_reset(ha) == QLA_SUCCESS)
886 ret = SUCCESS;
1da177e4 887 }
f4f051eb 888 if (ret == FAILED)
889 goto eh_bus_reset_done;
1da177e4 890
9a41a62b
AV		 891 /* Flush outstanding commands. */
892 if (!qla2x00_eh_wait_for_pending_commands(ha))
893 ret = FAILED;
1da177e4 894
f4f051eb 895eh_bus_reset_done:
1da177e4 896 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
f4f051eb 897 (ret == FAILED) ? "failed" : "succeded");
1da177e4 898
f4f051eb 899 return ret;
1da177e4
LT		 900}
901
902/**************************************************************************
903* qla2xxx_eh_host_reset
904*
905* Description:
906* The reset function will reset the Adapter.
907*
908* Input:
909* cmd = Linux SCSI command packet of the command that cause the
910* adapter reset.
911*
912* Returns:
913* Either SUCCESS or FAILED.
914*
915* Note:
916**************************************************************************/
917int
918qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
919{
f4f051eb 920 scsi_qla_host_t *ha = to_qla_host(cmd->device->host);
bdf79621 921 fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
f4f051eb 922 srb_t *sp;
923 int ret;
924 unsigned int id, lun;
925 unsigned long serial;
1da177e4 926
f4f051eb 927 ret = FAILED;
928
929 id = cmd->device->id;
930 lun = cmd->device->lun;
931 serial = cmd->serial_number;
932
933 sp = (srb_t *) CMD_SP(cmd);
bdf79621 934 if (!sp || !fcport)
f4f051eb 935 return ret;
1da177e4 936
1da177e4 937 qla_printk(KERN_INFO, ha,
f4f051eb 938 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha->host_no, id, lun);
1da177e4 939
1da177e4 940 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051eb 941 goto eh_host_reset_lock;
1da177e4
LT		 942
943 /*
944 * Fixme-may be dpc thread is active and processing
fa2a1ce5 945 * loop_resync,so wait a while for it to
1da177e4
LT		 946 * be completed and then issue big hammer.Otherwise
947 * it may cause I/O failure as big hammer marks the
948 * devices as lost kicking of the port_down_timer
949 * while dpc is stuck for the mailbox to complete.
950 */
1da177e4
LT		 951 qla2x00_wait_for_loop_ready(ha);
952 set_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
953 if (qla2x00_abort_isp(ha)) {
954 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
955 /* failed. schedule dpc to try */
956 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
957
958 if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
f4f051eb 959 goto eh_host_reset_lock;
fa2a1ce5 960 }
1da177e4
LT		 961 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
962
1da177e4 963 /* Waiting for our command in done_queue to be returned to OS.*/
f4f051eb 964 if (qla2x00_eh_wait_for_pending_commands(ha))
965 ret = SUCCESS;
1da177e4 966
f4f051eb 967eh_host_reset_lock:
f4f051eb 968 qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
969 (ret == FAILED) ? "failed" : "succeded");
1da177e4 970
f4f051eb 971 return ret;
972}
1da177e4
LT		 973
974/*
975* qla2x00_loop_reset
976* Issue loop reset.
977*
978* Input:
979* ha = adapter block pointer.
980*
981* Returns:
982* 0 = success
983*/
984static int
985qla2x00_loop_reset(scsi_qla_host_t *ha)
986{
987 int status = QLA_SUCCESS;
bdf79621 988 struct fc_port *fcport;
1da177e4
LT		 989
990 if (ha->flags.enable_lip_reset) {
991 status = qla2x00_lip_reset(ha);
992 }
993
994 if (status == QLA_SUCCESS && ha->flags.enable_target_reset) {
bdf79621 995 list_for_each_entry(fcport, &ha->fcports, list) {
996 if (fcport->port_type != FCT_TARGET)
1da177e4
LT		 997 continue;
998
c00c72ae 999 status = qla2x00_device_reset(ha, fcport);
bdf79621 1000 if (status != QLA_SUCCESS)
1da177e4 1001 break;
1da177e4
LT		 1002 }
1003 }
1004
1005 if (status == QLA_SUCCESS &&
fa2a1ce5 1006 ((!ha->flags.enable_target_reset &&
1da177e4
LT		 1007 !ha->flags.enable_lip_reset) ||
1008 ha->flags.enable_lip_full_login)) {
1009
1010 status = qla2x00_full_login_lip(ha);
1011 }
1012
1013 /* Issue marker command only when we are going to start the I/O */
1014 ha->marker_needed = 1;
1015
1016 if (status) {
1017 /* Empty */
1018 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1019 __func__,
1020 ha->host_no);)
1021 } else {
1022 /* Empty */
1023 DEBUG3(printk("%s(%ld): exiting normally.\n",
1024 __func__,
1025 ha->host_no);)
1026 }
1027
1028 return(status);
1029}
1030
1031/*
1032 * qla2x00_device_reset
1033 * Issue bus device reset message to the target.
1034 *
1035 * Input:
1036 * ha = adapter block pointer.
1037 * t = SCSI ID.
1038 * TARGET_QUEUE_LOCK must be released.
1039 * ADAPTER_STATE_LOCK must be released.
1040 *
1041 * Context:
1042 * Kernel context.
1043 */
1044static int
1045qla2x00_device_reset(scsi_qla_host_t *ha, fc_port_t *reset_fcport)
1046{
1047 /* Abort Target command will clear Reservation */
abbd8870 1048 return ha->isp_ops.abort_target(reset_fcport);
1da177e4
LT		 1049}
1050
f4f051eb 1051static int
1052qla2xxx_slave_alloc(struct scsi_device *sdev)
1da177e4 1053{
bdf79621 1054 struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
1da177e4 1055
19a7b4ae 1056 if (!rport || fc_remote_port_chkready(rport))
f4f051eb 1057 return -ENXIO;
bdf79621 1058
19a7b4ae 1059 sdev->hostdata = *(fc_port_t **)rport->dd_data;
1da177e4 1060
f4f051eb 1061 return 0;
1062}
1da177e4 1063
f4f051eb 1064static int
1065qla2xxx_slave_configure(struct scsi_device *sdev)
1066{
8482e118 1067 scsi_qla_host_t *ha = to_qla_host(sdev->host);
1068 struct fc_rport *rport = starget_to_rport(sdev->sdev_target);
1069
f4f051eb 1070 if (sdev->tagged_supported)
1071 scsi_activate_tcq(sdev, 32);
1072 else
1073 scsi_deactivate_tcq(sdev, 32);
1da177e4 1074
8482e118 1075 rport->dev_loss_tmo = ha->port_down_retry_count + 5;
1076
f4f051eb 1077 return 0;
1078}
1da177e4 1079
f4f051eb 1080static void
1081qla2xxx_slave_destroy(struct scsi_device *sdev)
1082{
1083 sdev->hostdata = NULL;
1da177e4
LT		 1084}
1085
ce7e4af7
AV		 1086static int
1087qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth)
1088{
1089 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
1090 return sdev->queue_depth;
1091}
1092
1093static int
1094qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
1095{
1096 if (sdev->tagged_supported) {
1097 scsi_set_tag_type(sdev, tag_type);
1098 if (tag_type)
1099 scsi_activate_tcq(sdev, sdev->queue_depth);
1100 else
1101 scsi_deactivate_tcq(sdev, sdev->queue_depth);
1102 } else
1103 tag_type = 0;
1104
1105 return tag_type;
1106}
1107
1da177e4
LT		 1108/**
1109 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1110 * @ha: HA context
1111 *
1112 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1113 * supported addressing method.
1114 */
1115static void
1116qla2x00_config_dma_addressing(scsi_qla_host_t *ha)
1117{
7524f9b9 1118 /* Assume a 32bit DMA mask. */
1da177e4 1119 ha->flags.enable_64bit_addressing = 0;
1da177e4 1120
7524f9b9
AV		 1121 if (!dma_set_mask(&ha->pdev->dev, DMA_64BIT_MASK)) {
1122 /* Any upper-dword bits set? */
1123 if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
1124 !pci_set_consistent_dma_mask(ha->pdev, DMA_64BIT_MASK)) {
1125 /* Ok, a 64bit DMA mask is applicable. */
1da177e4 1126 ha->flags.enable_64bit_addressing = 1;
abbd8870
AV		 1127 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_64;
1128 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_64;
7524f9b9 1129 return;
1da177e4 1130 }
1da177e4 1131 }
7524f9b9
AV		 1132
1133 dma_set_mask(&ha->pdev->dev, DMA_32BIT_MASK);
1134 pci_set_consistent_dma_mask(ha->pdev, DMA_32BIT_MASK);
1da177e4
LT		 1135}
1136
1137static int
1138qla2x00_iospace_config(scsi_qla_host_t *ha)
1139{
1140 unsigned long pio, pio_len, pio_flags;
1141 unsigned long mmio, mmio_len, mmio_flags;
1142
1143 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1144 pio = pci_resource_start(ha->pdev, 0);
1145 pio_len = pci_resource_len(ha->pdev, 0);
1146 pio_flags = pci_resource_flags(ha->pdev, 0);
1147 if (pio_flags & IORESOURCE_IO) {
1148 if (pio_len < MIN_IOBASE_LEN) {
1149 qla_printk(KERN_WARNING, ha,
1150 "Invalid PCI I/O region size (%s)...\n",
1151 pci_name(ha->pdev));
1152 pio = 0;
1153 }
1154 } else {
1155 qla_printk(KERN_WARNING, ha,
1156 "region #0 not a PIO resource (%s)...\n",
1157 pci_name(ha->pdev));
1158 pio = 0;
1159 }
1160
1161 /* Use MMIO operations for all accesses. */
1162 mmio = pci_resource_start(ha->pdev, 1);
1163 mmio_len = pci_resource_len(ha->pdev, 1);
1164 mmio_flags = pci_resource_flags(ha->pdev, 1);
1165
1166 if (!(mmio_flags & IORESOURCE_MEM)) {
1167 qla_printk(KERN_ERR, ha,
1168 "region #0 not an MMIO resource (%s), aborting\n",
1169 pci_name(ha->pdev));
1170 goto iospace_error_exit;
1171 }
1172 if (mmio_len < MIN_IOBASE_LEN) {
1173 qla_printk(KERN_ERR, ha,
1174 "Invalid PCI mem region size (%s), aborting\n",
1175 pci_name(ha->pdev));
1176 goto iospace_error_exit;
1177 }
1178
1179 if (pci_request_regions(ha->pdev, ha->brd_info->drv_name)) {
1180 qla_printk(KERN_WARNING, ha,
1181 "Failed to reserve PIO/MMIO regions (%s)\n",
1182 pci_name(ha->pdev));
1183
1184 goto iospace_error_exit;
1185 }
1186
1187 ha->pio_address = pio;
1188 ha->pio_length = pio_len;
1189 ha->iobase = ioremap(mmio, MIN_IOBASE_LEN);
1190 if (!ha->iobase) {
1191 qla_printk(KERN_ERR, ha,
1192 "cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
1193
1194 goto iospace_error_exit;
1195 }
1196
1197 return (0);
1198
1199iospace_error_exit:
1200 return (-ENOMEM);
1201}
1202
abbd8870
AV		 1203static void
1204qla2x00_enable_intrs(scsi_qla_host_t *ha)
1205{
1206 unsigned long flags = 0;
3d71644c 1207 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
abbd8870
AV		 1208
1209 spin_lock_irqsave(&ha->hardware_lock, flags);
1210 ha->interrupts_on = 1;
1211 /* enable risc and host interrupts */
1212 WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
1213 RD_REG_WORD(&reg->ictrl);
1214 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1215
1216}
1217
1218static void
1219qla2x00_disable_intrs(scsi_qla_host_t *ha)
1220{
1221 unsigned long flags = 0;
3d71644c 1222 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
abbd8870
AV		 1223
1224 spin_lock_irqsave(&ha->hardware_lock, flags);
1225 ha->interrupts_on = 0;
1226 /* disable risc and host interrupts */
1227 WRT_REG_WORD(&reg->ictrl, 0);
1228 RD_REG_WORD(&reg->ictrl);
1229 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1230}
1231
fca29703
AV		 1232static void
1233qla24xx_enable_intrs(scsi_qla_host_t *ha)
1234{
1235 unsigned long flags = 0;
1236 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1237
1238 spin_lock_irqsave(&ha->hardware_lock, flags);
1239 ha->interrupts_on = 1;
1240 WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
1241 RD_REG_DWORD(&reg->ictrl);
1242 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1243}
1244
1245static void
1246qla24xx_disable_intrs(scsi_qla_host_t *ha)
1247{
1248 unsigned long flags = 0;
1249 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1250
1251 spin_lock_irqsave(&ha->hardware_lock, flags);
1252 ha->interrupts_on = 0;
1253 WRT_REG_DWORD(&reg->ictrl, 0);
1254 RD_REG_DWORD(&reg->ictrl);
1255 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1256}
1257
1da177e4
LT		 1258/*
1259 * PCI driver interface
1260 */
1261int qla2x00_probe_one(struct pci_dev *pdev, struct qla_board_info *brd_info)
1262{
a1541d5a 1263 int ret = -ENODEV;
fca29703 1264 device_reg_t __iomem *reg;
1da177e4
LT		 1265 struct Scsi_Host *host;
1266 scsi_qla_host_t *ha;
1267 unsigned long flags = 0;
1268 unsigned long wait_switch = 0;
1269 char pci_info[20];
1270 char fw_str[30];
8482e118 1271 fc_port_t *fcport;
5433383e 1272 struct scsi_host_template *sht;
1da177e4
LT		 1273
1274 if (pci_enable_device(pdev))
a1541d5a 1275 goto probe_out;
1da177e4 1276
5433383e
AV		 1277 sht = &qla2x00_driver_template;
1278 if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
1279 pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432)
1280 sht = &qla24xx_driver_template;
1281 host = scsi_host_alloc(sht, 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
444d1d9b
AM		 1298 ha->dpc_pid = -1;
1299
1da177e4
LT		 1300 /* Configure PCI I/O space */
1301 ret = qla2x00_iospace_config(ha);
a1541d5a
AV		 1302 if (ret)
1303 goto probe_failed;
1da177e4 1304
1da177e4 1305 qla_printk(KERN_INFO, ha,
5433383e
AV		 1306 "Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
1307 ha->iobase);
1da177e4
LT		 1308
1309 spin_lock_init(&ha->hardware_lock);
1310
1da177e4
LT		 1311 ha->prev_topology = 0;
1312 ha->ports = MAX_BUSES;
fca29703 1313 ha->init_cb_size = sizeof(init_cb_t);
cca5335c 1314 ha->mgmt_svr_loop_id = MANAGEMENT_SERVER;
1da177e4 1315
abbd8870
AV		 1316 /* Assign ISP specific operations. */
1317 ha->isp_ops.pci_config = qla2100_pci_config;
1318 ha->isp_ops.reset_chip = qla2x00_reset_chip;
1319 ha->isp_ops.chip_diag = qla2x00_chip_diag;
1320 ha->isp_ops.config_rings = qla2x00_config_rings;
1321 ha->isp_ops.reset_adapter = qla2x00_reset_adapter;
1322 ha->isp_ops.nvram_config = qla2x00_nvram_config;
1323 ha->isp_ops.update_fw_options = qla2x00_update_fw_options;
0107109e 1324 ha->isp_ops.load_risc = qla2x00_load_risc;
abbd8870
AV		 1325 ha->isp_ops.pci_info_str = qla2x00_pci_info_str;
1326 ha->isp_ops.fw_version_str = qla2x00_fw_version_str;
1327 ha->isp_ops.intr_handler = qla2100_intr_handler;
1328 ha->isp_ops.enable_intrs = qla2x00_enable_intrs;
1329 ha->isp_ops.disable_intrs = qla2x00_disable_intrs;
1330 ha->isp_ops.abort_command = qla2x00_abort_command;
1331 ha->isp_ops.abort_target = qla2x00_abort_target;
1332 ha->isp_ops.fabric_login = qla2x00_login_fabric;
1333 ha->isp_ops.fabric_logout = qla2x00_fabric_logout;
1334 ha->isp_ops.calc_req_entries = qla2x00_calc_iocbs_32;
1335 ha->isp_ops.build_iocbs = qla2x00_build_scsi_iocbs_32;
1336 ha->isp_ops.prep_ms_iocb = qla2x00_prep_ms_iocb;
cca5335c 1337 ha->isp_ops.prep_ms_fdmi_iocb = qla2x00_prep_ms_fdmi_iocb;
459c5378
AV		 1338 ha->isp_ops.read_nvram = qla2x00_read_nvram_data;
1339 ha->isp_ops.write_nvram = qla2x00_write_nvram_data;
abbd8870
AV		 1340 ha->isp_ops.fw_dump = qla2100_fw_dump;
1341 ha->isp_ops.ascii_fw_dump = qla2100_ascii_fw_dump;
1da177e4 1342 if (IS_QLA2100(ha)) {
354d6b21 1343 host->max_id = MAX_TARGETS_2100;
1da177e4
LT		 1344 ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
1345 ha->request_q_length = REQUEST_ENTRY_CNT_2100;
1346 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1347 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
1348 host->sg_tablesize = 32;
abbd8870 1349 ha->gid_list_info_size = 4;
1da177e4 1350 } else if (IS_QLA2200(ha)) {
354d6b21 1351 host->max_id = MAX_TARGETS_2200;
1da177e4
LT		 1352 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1353 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1354 ha->response_q_length = RESPONSE_ENTRY_CNT_2100;
1355 ha->last_loop_id = SNS_LAST_LOOP_ID_2100;
abbd8870 1356 ha->gid_list_info_size = 4;
fca29703 1357 } else if (IS_QLA23XX(ha)) {
354d6b21 1358 host->max_id = MAX_TARGETS_2200;
1da177e4
LT		 1359 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1360 ha->request_q_length = REQUEST_ENTRY_CNT_2200;
1361 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1362 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
abbd8870
AV		 1363 ha->isp_ops.pci_config = qla2300_pci_config;
1364 ha->isp_ops.intr_handler = qla2300_intr_handler;
1365 ha->isp_ops.fw_dump = qla2300_fw_dump;
1366 ha->isp_ops.ascii_fw_dump = qla2300_ascii_fw_dump;
1367 ha->gid_list_info_size = 6;
fca29703
AV		 1368 } else if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1369 host->max_id = MAX_TARGETS_2200;
1370 ha->mbx_count = MAILBOX_REGISTER_COUNT;
1371 ha->request_q_length = REQUEST_ENTRY_CNT_24XX;
1372 ha->response_q_length = RESPONSE_ENTRY_CNT_2300;
1373 ha->last_loop_id = SNS_LAST_LOOP_ID_2300;
1374 ha->init_cb_size = sizeof(struct init_cb_24xx);
cca5335c 1375 ha->mgmt_svr_loop_id = 10;
fca29703
AV		 1376 ha->isp_ops.pci_config = qla24xx_pci_config;
1377 ha->isp_ops.reset_chip = qla24xx_reset_chip;
1378 ha->isp_ops.chip_diag = qla24xx_chip_diag;
1379 ha->isp_ops.config_rings = qla24xx_config_rings;
1380 ha->isp_ops.reset_adapter = qla24xx_reset_adapter;
1381 ha->isp_ops.nvram_config = qla24xx_nvram_config;
1382 ha->isp_ops.update_fw_options = qla24xx_update_fw_options;
5433383e 1383 ha->isp_ops.load_risc = qla24xx_load_risc;
331e3476
AV		 1384#if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
1385 if (ql2xfwloadflash)
1386 ha->isp_ops.load_risc = qla24xx_load_risc_flash;
5433383e 1387#endif
fca29703
AV		 1388 ha->isp_ops.pci_info_str = qla24xx_pci_info_str;
1389 ha->isp_ops.fw_version_str = qla24xx_fw_version_str;
1390 ha->isp_ops.intr_handler = qla24xx_intr_handler;
1391 ha->isp_ops.enable_intrs = qla24xx_enable_intrs;
1392 ha->isp_ops.disable_intrs = qla24xx_disable_intrs;
1393 ha->isp_ops.abort_command = qla24xx_abort_command;
1394 ha->isp_ops.abort_target = qla24xx_abort_target;
1395 ha->isp_ops.fabric_login = qla24xx_login_fabric;
1396 ha->isp_ops.fabric_logout = qla24xx_fabric_logout;
1397 ha->isp_ops.prep_ms_iocb = qla24xx_prep_ms_iocb;
cca5335c 1398 ha->isp_ops.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb;
fca29703
AV		 1399 ha->isp_ops.read_nvram = qla24xx_read_nvram_data;
1400 ha->isp_ops.write_nvram = qla24xx_write_nvram_data;
1401 ha->isp_ops.fw_dump = qla24xx_fw_dump;
1402 ha->isp_ops.ascii_fw_dump = qla24xx_ascii_fw_dump;
1403 ha->gid_list_info_size = 8;
1da177e4
LT		 1404 }
1405 host->can_queue = ha->request_q_length + 128;
1406
1407 /* load the F/W, read paramaters, and init the H/W */
1408 ha->instance = num_hosts;
1409
1410 init_MUTEX(&ha->mbx_cmd_sem);
1411 init_MUTEX_LOCKED(&ha->mbx_intr_sem);
1412
1413 INIT_LIST_HEAD(&ha->list);
1414 INIT_LIST_HEAD(&ha->fcports);
1415 INIT_LIST_HEAD(&ha->rscn_fcports);
1da177e4
LT		 1416
1417 /*
1418 * These locks are used to prevent more than one CPU
1419 * from modifying the queue at the same time. The
1420 * higher level "host_lock" will reduce most
1421 * contention for these locks.
1422 */
1423 spin_lock_init(&ha->mbx_reg_lock);
1da177e4 1424
1da177e4
LT		 1425 init_completion(&ha->dpc_inited);
1426 init_completion(&ha->dpc_exited);
1427
1428 qla2x00_config_dma_addressing(ha);
1429 if (qla2x00_mem_alloc(ha)) {
1430 qla_printk(KERN_WARNING, ha,
1431 "[ERROR] Failed to allocate memory for adapter\n");
1432
a1541d5a
AV		 1433 ret = -ENOMEM;
1434 goto probe_failed;
1da177e4
LT		 1435 }
1436
1437 if (qla2x00_initialize_adapter(ha) &&
1438 !(ha->device_flags & DFLG_NO_CABLE)) {
1439
1440 qla_printk(KERN_WARNING, ha,
1441 "Failed to initialize adapter\n");
1442
1443 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1444 "Adapter flags %x.\n",
1445 ha->host_no, ha->device_flags));
1446
a1541d5a 1447 ret = -ENODEV;
1da177e4
LT		 1448 goto probe_failed;
1449 }
1450
1451 /*
1452 * Startup the kernel thread for this host adapter
1453 */
1454 ha->dpc_should_die = 0;
1455 ha->dpc_pid = kernel_thread(qla2x00_do_dpc, ha, 0);
1456 if (ha->dpc_pid < 0) {
1457 qla_printk(KERN_WARNING, ha,
1458 "Unable to start DPC thread!\n");
1459
a1541d5a 1460 ret = -ENODEV;
1da177e4
LT		 1461 goto probe_failed;
1462 }
1463 wait_for_completion(&ha->dpc_inited);
1464
a1541d5a
AV		 1465 host->this_id = 255;
1466 host->cmd_per_lun = 3;
1467 host->unique_id = ha->instance;
1468 host->max_cmd_len = MAX_CMDSZ;
1469 host->max_channel = ha->ports - 1;
1470 host->max_lun = MAX_LUNS;
1471 host->transportt = qla2xxx_transport_template;
1472
fca29703 1473 ret = request_irq(pdev->irq, ha->isp_ops.intr_handler,
abbd8870 1474 SA_INTERRUPT|SA_SHIRQ, ha->brd_info->drv_name, ha);
a1541d5a 1475 if (ret) {
1da177e4
LT		 1476 qla_printk(KERN_WARNING, ha,
1477 "Failed to reserve interrupt %d already in use.\n",
fca29703 1478 pdev->irq);
1da177e4
LT		 1479 goto probe_failed;
1480 }
fca29703 1481 host->irq = pdev->irq;
1da177e4
LT		 1482
1483 /* Initialized the timer */
1484 qla2x00_start_timer(ha, qla2x00_timer, WATCH_INTERVAL);
1485
1486 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1487 ha->host_no, ha));
1488
abbd8870 1489 ha->isp_ops.disable_intrs(ha);
1da177e4 1490
1da177e4 1491 spin_lock_irqsave(&ha->hardware_lock, flags);
fca29703
AV		 1492 reg = ha->iobase;
1493 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1494 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1495 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1496 } else {
1497 WRT_REG_WORD(&reg->isp.semaphore, 0);
1498 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1499 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1500
1501 /* Enable proper parity */
1502 if (!IS_QLA2100(ha) && !IS_QLA2200(ha)) {
1503 if (IS_QLA2300(ha))
1504 /* SRAM parity */
1505 WRT_REG_WORD(&reg->isp.hccr,
1506 (HCCR_ENABLE_PARITY + 0x1));
1507 else
1508 /* SRAM, Instruction RAM and GP RAM parity */
1509 WRT_REG_WORD(&reg->isp.hccr,
1510 (HCCR_ENABLE_PARITY + 0x7));
1511 }
1da177e4
LT		 1512 }
1513 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1514
abbd8870 1515 ha->isp_ops.enable_intrs(ha);
1da177e4
LT		 1516
1517 /* v2.19.5b6 */
1518 /*
1519 * Wait around max loop_reset_delay secs for the devices to come
1520 * on-line. We don't want Linux scanning before we are ready.
1521 *
1522 */
1523 for (wait_switch = jiffies + (ha->loop_reset_delay * HZ);
1524 time_before(jiffies,wait_switch) &&
1525 !(ha->device_flags & (DFLG_NO_CABLE | DFLG_FABRIC_DEVICES))
1526 && (ha->device_flags & SWITCH_FOUND) ;) {
1527
1528 qla2x00_check_fabric_devices(ha);
1529
1530 msleep(10);
1531 }
1532
a1541d5a 1533 pci_set_drvdata(pdev, ha);
1da177e4
LT		 1534 ha->flags.init_done = 1;
1535 num_hosts++;
1536
a1541d5a
AV		 1537 ret = scsi_add_host(host, &pdev->dev);
1538 if (ret)
1539 goto probe_failed;
1540
1541 qla2x00_alloc_sysfs_attr(ha);
1542
1543 qla2x00_init_host_attr(ha);
1544
1da177e4
LT		 1545 qla_printk(KERN_INFO, ha, "\n"
1546 " QLogic Fibre Channel HBA Driver: %s\n"
1547 " QLogic %s - %s\n"
5433383e
AV		 1548 " ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
1549 qla2x00_version_str, ha->model_number,
1550 ha->model_desc ? ha->model_desc: "", pdev->device,
1551 ha->isp_ops.pci_info_str(ha, pci_info), pci_name(pdev),
1552 ha->flags.enable_64bit_addressing ? '+': '-', ha->host_no,
1553 ha->isp_ops.fw_version_str(ha, fw_str));
1da177e4 1554
8482e118 1555 /* Go with fc_rport registration. */
1556 list_for_each_entry(fcport, &ha->fcports, list)
1557 qla2x00_reg_remote_port(ha, fcport);
1da177e4
LT		 1558
1559 return 0;
1560
1561probe_failed:
1562 qla2x00_free_device(ha);
1563
1564 scsi_host_put(host);
1565
1566probe_disable_device:
1567 pci_disable_device(pdev);
1568
a1541d5a
AV		 1569probe_out:
1570 return ret;
1da177e4
LT		 1571}
1572EXPORT_SYMBOL_GPL(qla2x00_probe_one);
1573
1574void qla2x00_remove_one(struct pci_dev *pdev)
1575{
1576 scsi_qla_host_t *ha;
1577
1578 ha = pci_get_drvdata(pdev);
1579
8482e118 1580 qla2x00_free_sysfs_attr(ha);
1da177e4 1581
bdf79621 1582 fc_remove_host(ha->host);
1583
1da177e4
LT		 1584 scsi_remove_host(ha->host);
1585
1586 qla2x00_free_device(ha);
1587
1588 scsi_host_put(ha->host);
1589
1590 pci_set_drvdata(pdev, NULL);
1591}
1592EXPORT_SYMBOL_GPL(qla2x00_remove_one);
1593
1594static void
1595qla2x00_free_device(scsi_qla_host_t *ha)
1596{
1597 int ret;
1598
1599 /* Abort any outstanding IO descriptors. */
1600 if (!IS_QLA2100(ha) && !IS_QLA2200(ha))
1601 qla2x00_cancel_io_descriptors(ha);
1602
1da177e4
LT		 1603 /* Disable timer */
1604 if (ha->timer_active)
1605 qla2x00_stop_timer(ha);
1606
1607 /* Kill the kernel thread for this host */
1608 if (ha->dpc_pid >= 0) {
1609 ha->dpc_should_die = 1;
1610 wmb();
1611 ret = kill_proc(ha->dpc_pid, SIGHUP, 1);
1612 if (ret) {
1613 qla_printk(KERN_ERR, ha,
1614 "Unable to signal DPC thread -- (%d)\n", ret);
1615
1616 /* TODO: SOMETHING MORE??? */
1617 } else {
1618 wait_for_completion(&ha->dpc_exited);
1619 }
1620 }
1621
f6ef3b18
AV		 1622 /* Stop currently executing firmware. */
1623 qla2x00_stop_firmware(ha);
1da177e4 1624
f6ef3b18
AV		 1625 /* turn-off interrupts on the card */
1626 if (ha->interrupts_on)
1627 ha->isp_ops.disable_intrs(ha);
1628
1629 qla2x00_mem_free(ha);
1da177e4
LT		 1630
1631 ha->flags.online = 0;
1632
1633 /* Detach interrupts */
1634 if (ha->pdev->irq)
1635 free_irq(ha->pdev->irq, ha);
1636
1637 /* release io space registers */
1638 if (ha->iobase)
1639 iounmap(ha->iobase);
1640 pci_release_regions(ha->pdev);
1641
1642 pci_disable_device(ha->pdev);
1643}
1644
d97994dc 1645static inline void
1646qla2x00_schedule_rport_del(struct scsi_qla_host *ha, fc_port_t *fcport,
1647 int defer)
1648{
1649 unsigned long flags;
1650 struct fc_rport *rport;
1651
1652 if (!fcport->rport)
1653 return;
1654
1655 rport = fcport->rport;
1656 if (defer) {
1657 spin_lock_irqsave(&fcport->rport_lock, flags);
1658 fcport->drport = rport;
1659 fcport->rport = NULL;
1660 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1661 set_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags);
1662 } else {
1663 spin_lock_irqsave(&fcport->rport_lock, flags);
1664 fcport->rport = NULL;
1665 spin_unlock_irqrestore(&fcport->rport_lock, flags);
1666 fc_remote_port_delete(rport);
1667 }
1668}
1669
1da177e4
LT		 1670/*
1671 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1672 *
1673 * Input: ha = adapter block pointer. fcport = port structure pointer.
1674 *
1675 * Return: None.
1676 *
1677 * Context:
1678 */
1679void qla2x00_mark_device_lost(scsi_qla_host_t *ha, fc_port_t *fcport,
d97994dc 1680 int do_login, int defer)
1da177e4 1681{
d97994dc 1682 if (atomic_read(&fcport->state) == FCS_ONLINE)
1683 qla2x00_schedule_rport_del(ha, fcport, defer);
19a7b4ae 1684
fa2a1ce5 1685 /*
1da177e4
LT		 1686 * We may need to retry the login, so don't change the state of the
1687 * port but do the retries.
1688 */
1689 if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
1690 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1691
1692 if (!do_login)
1693 return;
1694
1695 if (fcport->login_retry == 0) {
1696 fcport->login_retry = ha->login_retry_count;
1697 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
1698
1699 DEBUG(printk("scsi(%ld): Port login retry: "
1700 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1701 "id = 0x%04x retry cnt=%d\n",
1702 ha->host_no,
1703 fcport->port_name[0],
1704 fcport->port_name[1],
1705 fcport->port_name[2],
1706 fcport->port_name[3],
1707 fcport->port_name[4],
1708 fcport->port_name[5],
1709 fcport->port_name[6],
1710 fcport->port_name[7],
1711 fcport->loop_id,
1712 fcport->login_retry));
1713 }
1714}
1715
1716/*
1717 * qla2x00_mark_all_devices_lost
1718 * Updates fcport state when device goes offline.
1719 *
1720 * Input:
1721 * ha = adapter block pointer.
1722 * fcport = port structure pointer.
1723 *
1724 * Return:
1725 * None.
1726 *
1727 * Context:
1728 */
1729void
d97994dc 1730qla2x00_mark_all_devices_lost(scsi_qla_host_t *ha, int defer)
1da177e4
LT		 1731{
1732 fc_port_t *fcport;
1733
1734 list_for_each_entry(fcport, &ha->fcports, list) {
1735 if (fcport->port_type != FCT_TARGET)
1736 continue;
1737
1738 /*
1739 * No point in marking the device as lost, if the device is
1740 * already DEAD.
1741 */
1742 if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
1743 continue;
d97994dc 1744 if (atomic_read(&fcport->state) == FCS_ONLINE)
1745 qla2x00_schedule_rport_del(ha, fcport, defer);
1da177e4
LT		 1746 atomic_set(&fcport->state, FCS_DEVICE_LOST);
1747 }
d97994dc 1748
1749 if (defer && ha->dpc_wait && !ha->dpc_active)
1750 up(ha->dpc_wait);
1da177e4
LT		 1751}
1752
1753/*
1754* qla2x00_mem_alloc
1755* Allocates adapter memory.
1756*
1757* Returns:
1758* 0 = success.
1759* 1 = failure.
1760*/
1761static uint8_t
1762qla2x00_mem_alloc(scsi_qla_host_t *ha)
1763{
1764 char name[16];
1765 uint8_t status = 1;
1766 int retry= 10;
1767
1768 do {
1769 /*
1770 * This will loop only once if everything goes well, else some
1771 * number of retries will be performed to get around a kernel
1772 * bug where available mem is not allocated until after a
1773 * little delay and a retry.
1774 */
1775 ha->request_ring = dma_alloc_coherent(&ha->pdev->dev,
1776 (ha->request_q_length + 1) * sizeof(request_t),
1777 &ha->request_dma, GFP_KERNEL);
1778 if (ha->request_ring == NULL) {
1779 qla_printk(KERN_WARNING, ha,
1780 "Memory Allocation failed - request_ring\n");
1781
1782 qla2x00_mem_free(ha);
1783 msleep(100);
1784
1785 continue;
1786 }
1787
1788 ha->response_ring = dma_alloc_coherent(&ha->pdev->dev,
1789 (ha->response_q_length + 1) * sizeof(response_t),
1790 &ha->response_dma, GFP_KERNEL);
1791 if (ha->response_ring == NULL) {
1792 qla_printk(KERN_WARNING, ha,
1793 "Memory Allocation failed - response_ring\n");
1794
1795 qla2x00_mem_free(ha);
1796 msleep(100);
1797
1798 continue;
1799 }
1800
1801 ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
1802 &ha->gid_list_dma, GFP_KERNEL);
1803 if (ha->gid_list == NULL) {
1804 qla_printk(KERN_WARNING, ha,
1805 "Memory Allocation failed - gid_list\n");
1806
1807 qla2x00_mem_free(ha);
1808 msleep(100);
1809
1810 continue;
1811 }
1812
1813 ha->rlc_rsp = dma_alloc_coherent(&ha->pdev->dev,
1814 sizeof(rpt_lun_cmd_rsp_t), &ha->rlc_rsp_dma, GFP_KERNEL);
1815 if (ha->rlc_rsp == NULL) {
1816 qla_printk(KERN_WARNING, ha,
1817 "Memory Allocation failed - rlc");
1818
1819 qla2x00_mem_free(ha);
1820 msleep(100);
1821
1822 continue;
1823 }
1824
1825 snprintf(name, sizeof(name), "qla2xxx_%ld", ha->host_no);
1826 ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
1827 DMA_POOL_SIZE, 8, 0);
1828 if (ha->s_dma_pool == NULL) {
1829 qla_printk(KERN_WARNING, ha,
1830 "Memory Allocation failed - s_dma_pool\n");
1831
1832 qla2x00_mem_free(ha);
1833 msleep(100);
1834
1835 continue;
1836 }
1837
1838 /* get consistent memory allocated for init control block */
1839 ha->init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1840 &ha->init_cb_dma);
1841 if (ha->init_cb == NULL) {
1842 qla_printk(KERN_WARNING, ha,
1843 "Memory Allocation failed - init_cb\n");
1844
1845 qla2x00_mem_free(ha);
1846 msleep(100);
1847
1848 continue;
1849 }
fca29703 1850 memset(ha->init_cb, 0, ha->init_cb_size);
1da177e4
LT		 1851
1852 /* Get consistent memory allocated for Get Port Database cmd */
1853 ha->iodesc_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1854 &ha->iodesc_pd_dma);
1855 if (ha->iodesc_pd == NULL) {
1856 /* error */
1857 qla_printk(KERN_WARNING, ha,
1858 "Memory Allocation failed - iodesc_pd\n");
1859
1860 qla2x00_mem_free(ha);
1861 msleep(100);
1862
1863 continue;
1864 }
1865 memset(ha->iodesc_pd, 0, PORT_DATABASE_SIZE);
1866
1867 /* Allocate ioctl related memory. */
1868 if (qla2x00_alloc_ioctl_mem(ha)) {
1869 qla_printk(KERN_WARNING, ha,
1870 "Memory Allocation failed - ioctl_mem\n");
1871
1872 qla2x00_mem_free(ha);
1873 msleep(100);
1874
1875 continue;
1876 }
1877
1878 if (qla2x00_allocate_sp_pool(ha)) {
1879 qla_printk(KERN_WARNING, ha,
1880 "Memory Allocation failed - "
1881 "qla2x00_allocate_sp_pool()\n");
1882
1883 qla2x00_mem_free(ha);
1884 msleep(100);
1885
1886 continue;
1887 }
1888
1889 /* Allocate memory for SNS commands */
1890 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
1891 /* Get consistent memory allocated for SNS commands */
1892 ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
1893 sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma,
1894 GFP_KERNEL);
1895 if (ha->sns_cmd == NULL) {
1896 /* error */
1897 qla_printk(KERN_WARNING, ha,
1898 "Memory Allocation failed - sns_cmd\n");
1899
1900 qla2x00_mem_free(ha);
1901 msleep(100);
1902
1903 continue;
1904 }
1905 memset(ha->sns_cmd, 0, sizeof(struct sns_cmd_pkt));
1906 } else {
1907 /* Get consistent memory allocated for MS IOCB */
1908 ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
1909 &ha->ms_iocb_dma);
1910 if (ha->ms_iocb == NULL) {
1911 /* error */
1912 qla_printk(KERN_WARNING, ha,
1913 "Memory Allocation failed - ms_iocb\n");
1914
1915 qla2x00_mem_free(ha);
1916 msleep(100);
1917
1918 continue;
1919 }
1920 memset(ha->ms_iocb, 0, sizeof(ms_iocb_entry_t));
1921
1922 /*
1923 * Get consistent memory allocated for CT SNS
1924 * commands
1925 */
1926 ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
1927 sizeof(struct ct_sns_pkt), &ha->ct_sns_dma,
1928 GFP_KERNEL);
1929 if (ha->ct_sns == NULL) {
1930 /* error */
1931 qla_printk(KERN_WARNING, ha,
1932 "Memory Allocation failed - ct_sns\n");
1933
1934 qla2x00_mem_free(ha);
1935 msleep(100);
1936
1937 continue;
1938 }
1939 memset(ha->ct_sns, 0, sizeof(struct ct_sns_pkt));
1940 }
1941
1942 /* Done all allocations without any error. */
1943 status = 0;
1944
1945 } while (retry-- && status != 0);
1946
1947 if (status) {
1948 printk(KERN_WARNING
1949 "%s(): **** FAILED ****\n", __func__);
1950 }
1951
1952 return(status);
1953}
1954
1955/*
1956* qla2x00_mem_free
1957* Frees all adapter allocated memory.
1958*
1959* Input:
1960* ha = adapter block pointer.
1961*/
1962static void
1963qla2x00_mem_free(scsi_qla_host_t *ha)
1964{
1da177e4
LT		 1965 struct list_head *fcpl, *fcptemp;
1966 fc_port_t *fcport;
fe74c71f 1967 unsigned int wtime;/* max wait time if mbx cmd is busy. */
1da177e4
LT		 1968
1969 if (ha == NULL) {
1970 /* error */
1971 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__));
1972 return;
1973 }
1974
1da177e4 1975 /* Make sure all other threads are stopped. */
fe74c71f
AV		 1976 wtime = 60 * 1000;
1977 while (ha->dpc_wait && wtime)
1978 wtime = msleep_interruptible(wtime);
1da177e4
LT		 1979
1980 /* free ioctl memory */
1981 qla2x00_free_ioctl_mem(ha);
1982
1983 /* free sp pool */
1984 qla2x00_free_sp_pool(ha);
1985
1986 if (ha->sns_cmd)
1987 dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
1988 ha->sns_cmd, ha->sns_cmd_dma);
1989
1990 if (ha->ct_sns)
1991 dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
1992 ha->ct_sns, ha->ct_sns_dma);
1993
1994 if (ha->ms_iocb)
1995 dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
1996
1997 if (ha->iodesc_pd)
1998 dma_pool_free(ha->s_dma_pool, ha->iodesc_pd, ha->iodesc_pd_dma);
1999
2000 if (ha->init_cb)
2001 dma_pool_free(ha->s_dma_pool, ha->init_cb, ha->init_cb_dma);
2002
2003 if (ha->s_dma_pool)
2004 dma_pool_destroy(ha->s_dma_pool);
2005
2006 if (ha->rlc_rsp)
2007 dma_free_coherent(&ha->pdev->dev,
2008 sizeof(rpt_lun_cmd_rsp_t), ha->rlc_rsp,
2009 ha->rlc_rsp_dma);
2010
2011 if (ha->gid_list)
2012 dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
2013 ha->gid_list_dma);
2014
2015 if (ha->response_ring)
2016 dma_free_coherent(&ha->pdev->dev,
2017 (ha->response_q_length + 1) * sizeof(response_t),
2018 ha->response_ring, ha->response_dma);
2019
2020 if (ha->request_ring)
2021 dma_free_coherent(&ha->pdev->dev,
2022 (ha->request_q_length + 1) * sizeof(request_t),
2023 ha->request_ring, ha->request_dma);
2024
2025 ha->sns_cmd = NULL;
2026 ha->sns_cmd_dma = 0;
2027 ha->ct_sns = NULL;
2028 ha->ct_sns_dma = 0;
2029 ha->ms_iocb = NULL;
2030 ha->ms_iocb_dma = 0;
2031 ha->iodesc_pd = NULL;
2032 ha->iodesc_pd_dma = 0;
2033 ha->init_cb = NULL;
2034 ha->init_cb_dma = 0;
2035
2036 ha->s_dma_pool = NULL;
2037
2038 ha->rlc_rsp = NULL;
2039 ha->rlc_rsp_dma = 0;
2040 ha->gid_list = NULL;
2041 ha->gid_list_dma = 0;
2042
2043 ha->response_ring = NULL;
2044 ha->response_dma = 0;
2045 ha->request_ring = NULL;
2046 ha->request_dma = 0;
2047
2048 list_for_each_safe(fcpl, fcptemp, &ha->fcports) {
2049 fcport = list_entry(fcpl, fc_port_t, list);
2050
1da177e4
LT		 2051 /* fc ports */
2052 list_del_init(&fcport->list);
2053 kfree(fcport);
2054 }
2055 INIT_LIST_HEAD(&ha->fcports);
2056
2057 if (ha->fw_dump)
2058 free_pages((unsigned long)ha->fw_dump, ha->fw_dump_order);
2059
fca29703
AV		 2060 vfree(ha->fw_dump24);
2061
2062 vfree(ha->fw_dump_buffer);
1da177e4
LT		 2063
2064 ha->fw_dump = NULL;
fca29703
AV		 2065 ha->fw_dump24 = NULL;
2066 ha->fw_dumped = 0;
1da177e4
LT		 2067 ha->fw_dump_reading = 0;
2068 ha->fw_dump_buffer = NULL;
2069}
2070
2071/*
2072 * qla2x00_allocate_sp_pool
2073 * This routine is called during initialization to allocate
2074 * memory for local srb_t.
2075 *
2076 * Input:
2077 * ha = adapter block pointer.
2078 *
2079 * Context:
2080 * Kernel context.
fa2a1ce5 2081 *
1da177e4
LT		 2082 * Note: Sets the ref_count for non Null sp to one.
2083 */
2084static int
fa2a1ce5 2085qla2x00_allocate_sp_pool(scsi_qla_host_t *ha)
1da177e4
LT		 2086{
2087 int rval;
2088
2089 rval = QLA_SUCCESS;
2090 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
2091 mempool_free_slab, srb_cachep);
2092 if (ha->srb_mempool == NULL) {
2093 qla_printk(KERN_INFO, ha, "Unable to allocate SRB mempool.\n");
2094 rval = QLA_FUNCTION_FAILED;
2095 }
2096 return (rval);
2097}
2098
2099/*
2100 * This routine frees all adapter allocated memory.
fa2a1ce5 2101 *
1da177e4
LT		 2102 */
2103static void
fa2a1ce5 2104qla2x00_free_sp_pool( scsi_qla_host_t *ha)
1da177e4
LT		 2105{
2106 if (ha->srb_mempool) {
2107 mempool_destroy(ha->srb_mempool);
2108 ha->srb_mempool = NULL;
2109 }
2110}
2111
2112/**************************************************************************
2113* qla2x00_do_dpc
2114* This kernel thread is a task that is schedule by the interrupt handler
2115* to perform the background processing for interrupts.
2116*
2117* Notes:
2118* This task always run in the context of a kernel thread. It
2119* is kick-off by the driver's detect code and starts up
2120* up one per adapter. It immediately goes to sleep and waits for
2121* some fibre event. When either the interrupt handler or
2122* the timer routine detects a event it will one of the task
2123* bits then wake us up.
2124**************************************************************************/
2125static int
2126qla2x00_do_dpc(void *data)
2127{
2128 DECLARE_MUTEX_LOCKED(sem);
2129 scsi_qla_host_t *ha;
2130 fc_port_t *fcport;
1da177e4 2131 uint8_t status;
1da177e4 2132 uint16_t next_loopid;
1da177e4
LT		 2133
2134 ha = (scsi_qla_host_t *)data;
2135
2136 lock_kernel();
2137
2138 daemonize("%s_dpc", ha->host_str);
2139 allow_signal(SIGHUP);
2140
2141 ha->dpc_wait = &sem;
2142
2143 set_user_nice(current, -20);
2144
2145 unlock_kernel();
2146
2147 complete(&ha->dpc_inited);
2148
2149 while (1) {
2150 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
2151
2152 if (down_interruptible(&sem))
2153 break;
2154
2155 if (ha->dpc_should_die)
2156 break;
2157
2158 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
2159
2160 /* Initialization not yet finished. Don't do anything yet. */
2161 if (!ha->flags.init_done || ha->dpc_active)
2162 continue;
2163
2164 DEBUG3(printk("scsi(%ld): DPC handler\n", ha->host_no));
2165
2166 ha->dpc_active = 1;
2167
1da177e4 2168 if (ha->flags.mbox_busy) {
1da177e4
LT		 2169 ha->dpc_active = 0;
2170 continue;
2171 }
2172
2173 if (test_and_clear_bit(ISP_ABORT_NEEDED, &ha->dpc_flags)) {
2174
2175 DEBUG(printk("scsi(%ld): dpc: sched "
2176 "qla2x00_abort_isp ha = %p\n",
2177 ha->host_no, ha));
2178 if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
2179 &ha->dpc_flags))) {
2180
2181 if (qla2x00_abort_isp(ha)) {
2182 /* failed. retry later */
2183 set_bit(ISP_ABORT_NEEDED,
2184 &ha->dpc_flags);
2185 }
2186 clear_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags);
2187 }
2188 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
2189 ha->host_no));
2190 }
2191
d97994dc 2192 if (test_and_clear_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags))
2193 qla2x00_update_fcports(ha);
2194
91ca7b01
AV		 2195 if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
2196 DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
2197 ha->host_no));
2198 qla2x00_loop_reset(ha);
2199 }
2200
1da177e4
LT		 2201 if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
2202 (!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
2203
2204 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
2205 ha->host_no));
2206
2207 qla2x00_rst_aen(ha);
2208 clear_bit(RESET_ACTIVE, &ha->dpc_flags);
2209 }
2210
2211 /* Retry each device up to login retry count */
2212 if ((test_and_clear_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2213 !test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) &&
2214 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2215
2216 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
2217 ha->host_no));
2218
2219 next_loopid = 0;
2220 list_for_each_entry(fcport, &ha->fcports, list) {
2221 if (fcport->port_type != FCT_TARGET)
2222 continue;
2223
2224 /*
2225 * If the port is not ONLINE then try to login
2226 * to it if we haven't run out of retries.
2227 */
2228 if (atomic_read(&fcport->state) != FCS_ONLINE &&
2229 fcport->login_retry) {
2230
2231 fcport->login_retry--;
2232 if (fcport->flags & FCF_FABRIC_DEVICE) {
2233 if (fcport->flags &
2234 FCF_TAPE_PRESENT)
abbd8870 2235 ha->isp_ops.fabric_logout(
1c7c6357
AV		 2236 ha, fcport->loop_id,
2237 fcport->d_id.b.domain,
2238 fcport->d_id.b.area,
2239 fcport->d_id.b.al_pa);
1da177e4
LT		 2240 status = qla2x00_fabric_login(
2241 ha, fcport, &next_loopid);
2242 } else
2243 status =
2244 qla2x00_local_device_login(
2245 ha, fcport->loop_id);
2246
2247 if (status == QLA_SUCCESS) {
2248 fcport->old_loop_id = fcport->loop_id;
2249
2250 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
2251 ha->host_no, fcport->loop_id));
fa2a1ce5 2252
1da177e4
LT		 2253 fcport->port_login_retry_count =
2254 ha->port_down_retry_count * PORT_RETRY_TIME;
2255 atomic_set(&fcport->state, FCS_ONLINE);
2256 atomic_set(&fcport->port_down_timer,
2257 ha->port_down_retry_count * PORT_RETRY_TIME);
2258
2259 fcport->login_retry = 0;
2260 } else if (status == 1) {
2261 set_bit(RELOGIN_NEEDED, &ha->dpc_flags);
2262 /* retry the login again */
2263 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
2264 ha->host_no,
2265 fcport->login_retry, fcport->loop_id));
2266 } else {
2267 fcport->login_retry = 0;
2268 }
2269 }
2270 if (test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags))
2271 break;
2272 }
2273 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2274 ha->host_no));
2275 }
2276
2277 if ((test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags)) &&
2278 atomic_read(&ha->loop_state) != LOOP_DOWN) {
2279
2280 clear_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags);
2281 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2282 ha->host_no));
fa2a1ce5 2283
1da177e4
LT		 2284 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
2285
2286 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2287 ha->host_no));
2288 }
2289
2290 if (test_and_clear_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags)) {
2291
2292 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2293 ha->host_no));
2294
2295 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
2296 &ha->dpc_flags))) {
2297
2298 qla2x00_loop_resync(ha);
2299
2300 clear_bit(LOOP_RESYNC_ACTIVE, &ha->dpc_flags);
2301 }
2302
2303 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2304 ha->host_no));
2305 }
2306
1da177e4
LT		 2307 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED, &ha->dpc_flags)) {
2308
2309 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2310 ha->host_no));
2311
2312 qla2x00_rescan_fcports(ha);
2313
2314 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2315 "end.\n",
2316 ha->host_no));
2317 }
2318
1da177e4 2319 if (!ha->interrupts_on)
abbd8870 2320 ha->isp_ops.enable_intrs(ha);
1da177e4 2321
1da177e4
LT		 2322 ha->dpc_active = 0;
2323 } /* End of while(1) */
2324
2325 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha->host_no));
2326
2327 /*
2328 * Make sure that nobody tries to wake us up again.
2329 */
2330 ha->dpc_wait = NULL;
2331 ha->dpc_active = 0;
2332
2333 complete_and_exit(&ha->dpc_exited, 0);
2334}
2335
1da177e4
LT		 2336/*
2337* qla2x00_rst_aen
2338* Processes asynchronous reset.
2339*
2340* Input:
2341* ha = adapter block pointer.
2342*/
2343static void
fa2a1ce5 2344qla2x00_rst_aen(scsi_qla_host_t *ha)
1da177e4
LT		 2345{
2346 if (ha->flags.online && !ha->flags.reset_active &&
2347 !atomic_read(&ha->loop_down_timer) &&
2348 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
2349 do {
2350 clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
2351
2352 /*
2353 * Issue marker command only when we are going to start
2354 * the I/O.
2355 */
2356 ha->marker_needed = 1;
2357 } while (!atomic_read(&ha->loop_down_timer) &&
2358 (test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags)));
2359 }
2360}
2361
f4f051eb 2362static void
2363qla2x00_sp_free_dma(scsi_qla_host_t *ha, srb_t *sp)
2364{
2365 struct scsi_cmnd *cmd = sp->cmd;
2366
2367 if (sp->flags & SRB_DMA_VALID) {
2368 if (cmd->use_sg) {
2369 dma_unmap_sg(&ha->pdev->dev, cmd->request_buffer,
2370 cmd->use_sg, cmd->sc_data_direction);
2371 } else if (cmd->request_bufflen) {
2372 dma_unmap_single(&ha->pdev->dev, sp->dma_handle,
2373 cmd->request_bufflen, cmd->sc_data_direction);
2374 }
2375 sp->flags &= ~SRB_DMA_VALID;
2376 }
fca29703 2377 CMD_SP(cmd) = NULL;
f4f051eb 2378}
2379
2380void
2381qla2x00_sp_compl(scsi_qla_host_t *ha, srb_t *sp)
2382{
2383 struct scsi_cmnd *cmd = sp->cmd;
2384
2385 qla2x00_sp_free_dma(ha, sp);
2386
f4f051eb 2387 mempool_free(sp, ha->srb_mempool);
2388
2389 cmd->scsi_done(cmd);
2390}
bdf79621 2391
1da177e4
LT		 2392/**************************************************************************
2393* qla2x00_timer
2394*
2395* Description:
2396* One second timer
2397*
2398* Context: Interrupt
2399***************************************************************************/
2400static void
2401qla2x00_timer(scsi_qla_host_t *ha)
2402{
1da177e4
LT		 2403 unsigned long cpu_flags = 0;
2404 fc_port_t *fcport;
1da177e4
LT		 2405 int start_dpc = 0;
2406 int index;
2407 srb_t *sp;
f4f051eb 2408 int t;
1da177e4
LT		 2409
2410 /*
2411 * Ports - Port down timer.
2412 *
2413 * Whenever, a port is in the LOST state we start decrementing its port
2414 * down timer every second until it reaches zero. Once it reaches zero
fa2a1ce5 2415 * the port it marked DEAD.
1da177e4
LT		 2416 */
2417 t = 0;
2418 list_for_each_entry(fcport, &ha->fcports, list) {
2419 if (fcport->port_type != FCT_TARGET)
2420 continue;
2421
2422 if (atomic_read(&fcport->state) == FCS_DEVICE_LOST) {
2423
2424 if (atomic_read(&fcport->port_down_timer) == 0)
2425 continue;
2426
fa2a1ce5 2427 if (atomic_dec_and_test(&fcport->port_down_timer) != 0)
1da177e4 2428 atomic_set(&fcport->state, FCS_DEVICE_DEAD);
fa2a1ce5 2429
1da177e4 2430 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
fca29703 2431 "%d remaining\n",
1da177e4
LT		 2432 ha->host_no,
2433 t, atomic_read(&fcport->port_down_timer)));
2434 }
2435 t++;
2436 } /* End of for fcport */
2437
1da177e4
LT		 2438
2439 /* Loop down handler. */
2440 if (atomic_read(&ha->loop_down_timer) > 0 &&
2441 !(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags)) && ha->flags.online) {
2442
2443 if (atomic_read(&ha->loop_down_timer) ==
2444 ha->loop_down_abort_time) {
2445
2446 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2447 "queues before time expire\n",
2448 ha->host_no));
2449
2450 if (!IS_QLA2100(ha) && ha->link_down_timeout)
fa2a1ce5 2451 atomic_set(&ha->loop_state, LOOP_DEAD);
1da177e4
LT		 2452
2453 /* Schedule an ISP abort to return any tape commands. */
2454 spin_lock_irqsave(&ha->hardware_lock, cpu_flags);
2455 for (index = 1; index < MAX_OUTSTANDING_COMMANDS;
2456 index++) {
bdf79621 2457 fc_port_t *sfcp;
2458
1da177e4
LT		 2459 sp = ha->outstanding_cmds[index];
2460 if (!sp)
2461 continue;
bdf79621 2462 sfcp = sp->fcport;
2463 if (!(sfcp->flags & FCF_TAPE_PRESENT))
1da177e4
LT		 2464 continue;
2465
2466 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2467 break;
2468 }
2469 spin_unlock_irqrestore(&ha->hardware_lock, cpu_flags);
2470
2471 set_bit(ABORT_QUEUES_NEEDED, &ha->dpc_flags);
2472 start_dpc++;
2473 }
2474
2475 /* if the loop has been down for 4 minutes, reinit adapter */
2476 if (atomic_dec_and_test(&ha->loop_down_timer) != 0) {
2477 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2478 "restarting queues.\n",
2479 ha->host_no));
2480
2481 set_bit(RESTART_QUEUES_NEEDED, &ha->dpc_flags);
2482 start_dpc++;
2483
2484 if (!(ha->device_flags & DFLG_NO_CABLE)) {
2485 DEBUG(printk("scsi(%ld): Loop down - "
2486 "aborting ISP.\n",
2487 ha->host_no));
2488 qla_printk(KERN_WARNING, ha,
2489 "Loop down - aborting ISP.\n");
2490
2491 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
2492 }
2493 }
fca29703 2494 DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
1da177e4
LT		 2495 ha->host_no,
2496 atomic_read(&ha->loop_down_timer)));
2497 }
2498
1da177e4
LT		 2499 /* Schedule the DPC routine if needed */
2500 if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
2501 test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
91ca7b01 2502 test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
d97994dc 2503 test_bit(FCPORT_UPDATE_NEEDED, &ha->dpc_flags) ||
1da177e4
LT		 2504 start_dpc ||
2505 test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
f4f051eb 2506 test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
1da177e4
LT		 2507 test_bit(RELOGIN_NEEDED, &ha->dpc_flags)) &&
2508 ha->dpc_wait && !ha->dpc_active) {
2509
2510 up(ha->dpc_wait);
2511 }
2512
2513 qla2x00_restart_timer(ha, WATCH_INTERVAL);
2514}
2515
1da177e4
LT		 2516/* XXX(hch): crude hack to emulate a down_timeout() */
2517int
2518qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
2519{
fe74c71f
AV		 2520 const unsigned int step = 100; /* msecs */
2521 unsigned int iterations = jiffies_to_msecs(timeout)/100;
1da177e4
LT		 2522
2523 do {
2524 if (!down_trylock(sema))
2525 return 0;
fe74c71f 2526 if (msleep_interruptible(step))
1da177e4 2527 break;
fe74c71f 2528 } while (--iterations >= 0);
1da177e4
LT		 2529
2530 return -ETIMEDOUT;
2531}
2532
5433383e
AV		 2533#if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2534
2535#define qla2x00_release_firmware() do { } while (0)
331e3476
AV		 2536#define qla2x00_pci_module_init() (0)
2537#define qla2x00_pci_module_exit() do { } while (0)
fca29703 2538
5433383e
AV		 2539#else /* !defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE) */
2540
2541/* Firmware interface routines. */
2542
2543#define FW_BLOBS 6
2544#define FW_ISP21XX 0
2545#define FW_ISP22XX 1
2546#define FW_ISP2300 2
2547#define FW_ISP2322 3
2548#define FW_ISP63XX 4
2549#define FW_ISP24XX 5
2550
2551static DECLARE_MUTEX(qla_fw_lock);
2552
2553static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
2554 { .name = "ql2100_fw.bin", .segs = { 0x1000, 0 }, },
2555 { .name = "ql2200_fw.bin", .segs = { 0x1000, 0 }, },
2556 { .name = "ql2300_fw.bin", .segs = { 0x800, 0 }, },
2557 { .name = "ql2322_fw.bin", .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
2558 { .name = "ql6312_fw.bin", .segs = { 0x800, 0 }, },
2559 { .name = "ql2400_fw.bin", },
2560};
2561
2562struct fw_blob *
2563qla2x00_request_firmware(scsi_qla_host_t *ha)
2564{
2565 struct fw_blob *blob;
2566
2567 blob = NULL;
2568 if (IS_QLA2100(ha)) {
2569 blob = &qla_fw_blobs[FW_ISP21XX];
2570 } else if (IS_QLA2200(ha)) {
2571 blob = &qla_fw_blobs[FW_ISP22XX];
2572 } else if (IS_QLA2300(ha) || IS_QLA2312(ha)) {
2573 blob = &qla_fw_blobs[FW_ISP2300];
2574 } else if (IS_QLA2322(ha)) {
2575 blob = &qla_fw_blobs[FW_ISP2322];
2576 } else if (IS_QLA6312(ha) || IS_QLA6322(ha)) {
2577 blob = &qla_fw_blobs[FW_ISP63XX];
2578 } else if (IS_QLA24XX(ha)) {
2579 blob = &qla_fw_blobs[FW_ISP24XX];
2580 }
2581
2582 down(&qla_fw_lock);
2583 if (blob->fw)
2584 goto out;
2585
2586 if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
2587 DEBUG2(printk("scsi(%ld): Failed to load firmware image "
2588 "(%s).\n", ha->host_no, blob->name));
2589 blob->fw = NULL;
2590 blob = NULL;
2591 goto out;
2592 }
2593
2594out:
2595 up(&qla_fw_lock);
2596 return blob;
2597}
2598
2599static void
2600qla2x00_release_firmware(void)
2601{
2602 int idx;
2603
2604 down(&qla_fw_lock);
2605 for (idx = 0; idx < FW_BLOBS; idx++)
2606 if (qla_fw_blobs[idx].fw)
2607 release_firmware(qla_fw_blobs[idx].fw);
2608 up(&qla_fw_lock);
2609}
2610
2611static struct qla_board_info qla_board_tbl = {
2612 .drv_name = "qla2xxx",
2613};
2614
2615static struct pci_device_id qla2xxx_pci_tbl[] = {
2616 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100,
2617 PCI_ANY_ID, PCI_ANY_ID, },
2618 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200,
2619 PCI_ANY_ID, PCI_ANY_ID, },
2620 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300,
2621 PCI_ANY_ID, PCI_ANY_ID, },
2622 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312,
2623 PCI_ANY_ID, PCI_ANY_ID, },
2624 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322,
2625 PCI_ANY_ID, PCI_ANY_ID, },
2626 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312,
2627 PCI_ANY_ID, PCI_ANY_ID, },
2628 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322,
2629 PCI_ANY_ID, PCI_ANY_ID, },
2630 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422,
2631 PCI_ANY_ID, PCI_ANY_ID, },
2632 { PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432,
2633 PCI_ANY_ID, PCI_ANY_ID, },
2634 { 0 },
2635};
2636MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
2637
2638static int __devinit
2639qla2xxx_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
2640{
2641 return qla2x00_probe_one(pdev, &qla_board_tbl);
2642}
2643
2644static void __devexit
2645qla2xxx_remove_one(struct pci_dev *pdev)
2646{
2647 qla2x00_remove_one(pdev);
2648}
2649
fca29703
AV		 2650static struct pci_driver qla2xxx_pci_driver = {
2651 .name = "qla2xxx",
0a21ef1e
JB		 2652 .driver = {
2653 .owner = THIS_MODULE,
2654 },
fca29703
AV		 2655 .id_table = qla2xxx_pci_tbl,
2656 .probe = qla2xxx_probe_one,
2657 .remove = __devexit_p(qla2xxx_remove_one),
2658};
2659
331e3476
AV		 2660static inline int
2661qla2x00_pci_module_init(void)
2662{
2663 return pci_module_init(&qla2xxx_pci_driver);
2664}
2665
2666static inline void
2667qla2x00_pci_module_exit(void)
2668{
2669 pci_unregister_driver(&qla2xxx_pci_driver);
2670}
2671
2672#endif
2673
1da177e4
LT		 2674/**
2675 * qla2x00_module_init - Module initialization.
2676 **/
2677static int __init
2678qla2x00_module_init(void)
2679{
fca29703
AV		 2680 int ret = 0;
2681
1da177e4 2682 /* Allocate cache for SRBs. */
354d6b21 2683 srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
1da177e4
LT		 2684 SLAB_HWCACHE_ALIGN, NULL, NULL);
2685 if (srb_cachep == NULL) {
2686 printk(KERN_ERR
2687 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2688 return -ENOMEM;
2689 }
2690
2691 /* Derive version string. */
2692 strcpy(qla2x00_version_str, QLA2XXX_VERSION);
5433383e
AV		 2693#if defined(CONFIG_SCSI_QLA2XXX_EMBEDDED_FIRMWARE)
2694 strcat(qla2x00_version_str, "-fw");
2695#endif
1da177e4
LT		 2696#if DEBUG_QLA2100
2697 strcat(qla2x00_version_str, "-debug");
2698#endif
1c97a12a
AV		 2699 qla2xxx_transport_template =
2700 fc_attach_transport(&qla2xxx_transport_functions);
1da177e4
LT		 2701 if (!qla2xxx_transport_template)
2702 return -ENODEV;
2703
2704 printk(KERN_INFO "QLogic Fibre Channel HBA Driver\n");
331e3476 2705 ret = qla2x00_pci_module_init();
fca29703
AV		 2706 if (ret) {
2707 kmem_cache_destroy(srb_cachep);
2708 fc_release_transport(qla2xxx_transport_template);
2709 }
2710 return ret;
1da177e4
LT		 2711}
2712
2713/**
2714 * qla2x00_module_exit - Module cleanup.
2715 **/
2716static void __exit
2717qla2x00_module_exit(void)
2718{
331e3476 2719 qla2x00_pci_module_exit();
5433383e 2720 qla2x00_release_firmware();
354d6b21 2721 kmem_cache_destroy(srb_cachep);
1da177e4
LT		 2722 fc_release_transport(qla2xxx_transport_template);
2723}
2724
2725module_init(qla2x00_module_init);
2726module_exit(qla2x00_module_exit);
2727
2728MODULE_AUTHOR("QLogic Corporation");
2729MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2730MODULE_LICENSE("GPL");
2731MODULE_VERSION(QLA2XXX_VERSION);
Linux kernel - Deliverables
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