2 * QLOGIC LINUX SOFTWARE
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2004 QLogic Corporation
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
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.
21 #include <linux/moduleparam.h>
22 #include <linux/vmalloc.h>
23 #include <linux/smp_lock.h>
24 #include <linux/delay.h>
26 #include <scsi/scsi_tcq.h>
27 #include <scsi/scsicam.h>
28 #include <scsi/scsi_transport.h>
29 #include <scsi/scsi_transport_fc.h>
34 char qla2x00_version_str
[40];
37 * SRB allocation cache
39 char srb_cachep_name
[16];
40 kmem_cache_t
*srb_cachep
;
43 * Stats for all adpaters.
45 struct _qla2x00stats qla2x00_stats
;
48 * Ioctl related information.
54 * Module parameter information and variables
57 module_param(ql2xmaxqdepth
, int, S_IRUGO
|S_IWUSR
);
58 MODULE_PARM_DESC(ql2xmaxqdepth
,
59 "Maximum queue depth to report for target devices.");
61 int ql2xlogintimeout
= 20;
62 module_param(ql2xlogintimeout
, int, S_IRUGO
|S_IRUSR
);
63 MODULE_PARM_DESC(ql2xlogintimeout
,
64 "Login timeout value in seconds.");
66 int qlport_down_retry
;
67 module_param(qlport_down_retry
, int, S_IRUGO
|S_IRUSR
);
68 MODULE_PARM_DESC(qlport_down_retry
,
69 "Maximum number of command retries to a port that returns"
70 "a PORT-DOWN status.");
72 int ql2xretrycount
= 20;
73 module_param(ql2xretrycount
, int, S_IRUGO
|S_IWUSR
);
74 MODULE_PARM_DESC(ql2xretrycount
,
75 "Maximum number of mid-layer retries allowed for a command. "
76 "Default value is 20, ");
79 module_param(displayConfig
, int, S_IRUGO
|S_IWUSR
);
80 MODULE_PARM_DESC(displayConfig
,
81 "If 1 then display the configuration used in /etc/modprobe.conf.");
83 int ql2xplogiabsentdevice
;
84 module_param(ql2xplogiabsentdevice
, int, S_IRUGO
|S_IWUSR
);
85 MODULE_PARM_DESC(ql2xplogiabsentdevice
,
86 "Option to enable PLOGI to devices that are not present after "
87 "a Fabric scan. This is needed for several broken switches."
88 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
90 int ql2xenablezio
= 0;
91 module_param(ql2xenablezio
, int, S_IRUGO
|S_IRUSR
);
92 MODULE_PARM_DESC(ql2xenablezio
,
93 "Option to enable ZIO:If 1 then enable it otherwise"
94 " use the default set in the NVRAM."
95 " Default is 0 : disabled");
97 int ql2xintrdelaytimer
= 10;
98 module_param(ql2xintrdelaytimer
, int, S_IRUGO
|S_IRUSR
);
99 MODULE_PARM_DESC(ql2xintrdelaytimer
,
100 "ZIO: Waiting time for Firmware before it generates an "
101 "interrupt to the host to notify completion of request.");
104 module_param(ConfigRequired
, int, S_IRUGO
|S_IRUSR
);
105 MODULE_PARM_DESC(ConfigRequired
,
106 "If 1, then only configured devices passed in through the"
107 "ql2xopts parameter will be presented to the OS");
109 int Bind
= BIND_BY_PORT_NAME
;
110 module_param(Bind
, int, S_IRUGO
|S_IRUSR
);
111 MODULE_PARM_DESC(Bind
,
112 "Target persistent binding method: "
113 "0 by Portname (default); 1 by PortID; 2 by Nodename. ");
115 int ql2xsuspendcount
= SUSPEND_COUNT
;
116 module_param(ql2xsuspendcount
, int, S_IRUGO
|S_IWUSR
);
117 MODULE_PARM_DESC(ql2xsuspendcount
,
118 "Number of 6-second suspend iterations to perform while a "
119 "target returns a <NOT READY> status. Default is 10 "
122 int ql2xdoinitscan
= 1;
123 module_param(ql2xdoinitscan
, int, S_IRUGO
|S_IWUSR
);
124 MODULE_PARM_DESC(ql2xdoinitscan
,
125 "Signal mid-layer to perform scan after driver load: 0 -- no "
126 "signal sent to mid-layer.");
128 int ql2xloginretrycount
= 0;
129 module_param(ql2xloginretrycount
, int, S_IRUGO
|S_IRUSR
);
130 MODULE_PARM_DESC(ql2xloginretrycount
,
131 "Specify an alternate value for the NVRAM login retry count.");
134 * Proc structures and functions
143 static void copy_mem_info(struct info_str
*, char *, int);
144 static int copy_info(struct info_str
*, char *, ...);
146 static void qla2x00_free_device(scsi_qla_host_t
*);
148 static void qla2x00_config_dma_addressing(scsi_qla_host_t
*ha
);
151 * SCSI host template entry points
153 static int qla2xxx_slave_configure(struct scsi_device
* device
);
154 static int qla2x00_queuecommand(struct scsi_cmnd
*cmd
,
155 void (*fn
)(struct scsi_cmnd
*));
156 static int qla2xxx_eh_abort(struct scsi_cmnd
*);
157 static int qla2xxx_eh_device_reset(struct scsi_cmnd
*);
158 static int qla2xxx_eh_bus_reset(struct scsi_cmnd
*);
159 static int qla2xxx_eh_host_reset(struct scsi_cmnd
*);
160 static int qla2x00_loop_reset(scsi_qla_host_t
*ha
);
161 static int qla2x00_device_reset(scsi_qla_host_t
*, fc_port_t
*);
163 static int qla2x00_proc_info(struct Scsi_Host
*, char *, char **,
166 static struct scsi_host_template qla2x00_driver_template
= {
167 .module
= THIS_MODULE
,
169 .proc_name
= "qla2xxx",
170 .proc_info
= qla2x00_proc_info
,
171 .queuecommand
= qla2x00_queuecommand
,
173 .eh_abort_handler
= qla2xxx_eh_abort
,
174 .eh_device_reset_handler
= qla2xxx_eh_device_reset
,
175 .eh_bus_reset_handler
= qla2xxx_eh_bus_reset
,
176 .eh_host_reset_handler
= qla2xxx_eh_host_reset
,
178 .slave_configure
= qla2xxx_slave_configure
,
182 .use_clustering
= ENABLE_CLUSTERING
,
183 .sg_tablesize
= SG_ALL
,
186 * The RISC allows for each command to transfer (2^32-1) bytes of data,
187 * which equates to 0x800000 sectors.
189 .max_sectors
= 0xFFFF,
192 static struct scsi_transport_template
*qla2xxx_transport_template
= NULL
;
194 static void qla2x00_display_fc_names(scsi_qla_host_t
*);
196 /* TODO Convert to inlines
200 #define WATCH_INTERVAL 1 /* number of seconds */
202 static void qla2x00_timer(scsi_qla_host_t
*);
204 static __inline__
void qla2x00_start_timer(scsi_qla_host_t
*,
205 void *, unsigned long);
206 static __inline__
void qla2x00_restart_timer(scsi_qla_host_t
*, unsigned long);
207 static __inline__
void qla2x00_stop_timer(scsi_qla_host_t
*);
210 qla2x00_start_timer(scsi_qla_host_t
*ha
, void *func
, unsigned long interval
)
212 init_timer(&ha
->timer
);
213 ha
->timer
.expires
= jiffies
+ interval
* HZ
;
214 ha
->timer
.data
= (unsigned long)ha
;
215 ha
->timer
.function
= (void (*)(unsigned long))func
;
216 add_timer(&ha
->timer
);
217 ha
->timer_active
= 1;
221 qla2x00_restart_timer(scsi_qla_host_t
*ha
, unsigned long interval
)
223 mod_timer(&ha
->timer
, jiffies
+ interval
* HZ
);
226 static __inline__
void
227 qla2x00_stop_timer(scsi_qla_host_t
*ha
)
229 del_timer_sync(&ha
->timer
);
230 ha
->timer_active
= 0;
233 void qla2x00_cmd_timeout(srb_t
*);
235 static __inline__
void qla2x00_callback(scsi_qla_host_t
*, struct scsi_cmnd
*);
236 static __inline__
void sp_put(struct scsi_qla_host
* ha
, srb_t
*sp
);
237 static __inline__
void sp_get(struct scsi_qla_host
* ha
, srb_t
*sp
);
238 static __inline__
void
239 qla2x00_delete_from_done_queue(scsi_qla_host_t
*, srb_t
*);
243 * Returns the completed SCSI command to LINUX.
246 * ha -- Host adapter structure
247 * cmd -- SCSI mid-level command structure.
250 * Note:From failover point of view we always get the sp
251 * from vis_ha pool in queuecommand.So when we put it
252 * back to the pool it has to be the vis_ha.
253 * So rely on struct scsi_cmnd to get the vis_ha and not on sp.
256 qla2x00_callback(scsi_qla_host_t
*ha
, struct scsi_cmnd
*cmd
)
258 srb_t
*sp
= (srb_t
*) CMD_SP(cmd
);
259 scsi_qla_host_t
*vis_ha
;
262 unsigned long cpu_flags
= 0;
264 cmd
->host_scribble
= (unsigned char *) NULL
;
265 vis_ha
= (scsi_qla_host_t
*) cmd
->device
->host
->hostdata
;
268 qla_printk(KERN_INFO
, ha
,
269 "%s(): **** CMD derives a NULL SP\n",
276 * If command status is not DID_BUS_BUSY then go ahead and freed sp.
279 * Cancel command timeout
281 qla2x00_delete_timer_from_cmd(sp
);
284 * Put SP back in the free queue
289 got_sense
= (sp
->flags
& SRB_GOT_SENSE
)? 1: 0;
290 add_to_free_queue(vis_ha
, sp
);
292 if (host_byte(cmd
->result
) == DID_OK
) {
294 ha
->total_bytes
+= cmd
->bufflen
;
296 /* If lun was suspended then clear retry count */
297 spin_lock_irqsave(&lq
->q_lock
, cpu_flags
);
298 if (!test_bit(LUN_EXEC_DELAYED
, &lq
->q_flag
))
299 lq
->q_state
= LUN_STATE_READY
;
300 spin_unlock_irqrestore(&lq
->q_lock
, cpu_flags
);
302 } else if (host_byte(cmd
->result
) == DID_ERROR
) {
304 ha
->total_dev_errs
++;
307 /* Call the mid-level driver interrupt handler */
308 (*(cmd
)->scsi_done
)(cmd
);
311 /**************************************************************************
315 * Decrement reference count and call the callback if we're the last
316 * owner of the specified sp. Will get the host_lock before calling
320 * ha - pointer to the scsi_qla_host_t where the callback is to occur.
321 * sp - pointer to srb_t structure to use.
325 **************************************************************************/
327 sp_put(struct scsi_qla_host
* ha
, srb_t
*sp
)
329 if (atomic_read(&sp
->ref_count
) == 0) {
330 qla_printk(KERN_INFO
, ha
,
331 "%s(): **** SP->ref_count not zero\n",
338 if (!atomic_dec_and_test(&sp
->ref_count
)) {
342 qla2x00_callback(ha
, sp
->cmd
);
345 /**************************************************************************
349 * Increment reference count of the specified sp.
352 * sp - pointer to srb_t structure to use.
356 **************************************************************************/
358 sp_get(struct scsi_qla_host
* ha
, srb_t
*sp
)
360 atomic_inc(&sp
->ref_count
);
362 if (atomic_read(&sp
->ref_count
) > 2) {
363 qla_printk(KERN_INFO
, ha
,
364 "%s(): **** SP->ref_count greater than two\n",
373 qla2x00_delete_from_done_queue(scsi_qla_host_t
*dest_ha
, srb_t
*sp
)
375 /* remove command from done list */
376 list_del_init(&sp
->list
);
377 dest_ha
->done_q_cnt
--;
378 sp
->state
= SRB_NO_QUEUE_STATE
;
380 if (sp
->flags
& SRB_DMA_VALID
) {
381 sp
->flags
&= ~SRB_DMA_VALID
;
383 /* Release memory used for this I/O */
384 if (sp
->cmd
->use_sg
) {
385 pci_unmap_sg(dest_ha
->pdev
, sp
->cmd
->request_buffer
,
386 sp
->cmd
->use_sg
, sp
->cmd
->sc_data_direction
);
387 } else if (sp
->cmd
->request_bufflen
) {
388 pci_unmap_page(dest_ha
->pdev
, sp
->dma_handle
,
389 sp
->cmd
->request_bufflen
,
390 sp
->cmd
->sc_data_direction
);
395 static int qla2x00_do_dpc(void *data
);
397 static void qla2x00_rst_aen(scsi_qla_host_t
*);
399 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t
*);
400 static void qla2x00_mem_free(scsi_qla_host_t
*ha
);
401 static int qla2x00_allocate_sp_pool( scsi_qla_host_t
*ha
);
402 static void qla2x00_free_sp_pool(scsi_qla_host_t
*ha
);
403 static srb_t
*qla2x00_get_new_sp(scsi_qla_host_t
*ha
);
405 static ssize_t
qla2x00_sysfs_read_fw_dump(struct kobject
*, char *, loff_t
,
407 static ssize_t
qla2x00_sysfs_write_fw_dump(struct kobject
*, char *, loff_t
,
409 static struct bin_attribute sysfs_fw_dump_attr
= {
412 .mode
= S_IRUSR
| S_IWUSR
,
413 .owner
= THIS_MODULE
,
416 .read
= qla2x00_sysfs_read_fw_dump
,
417 .write
= qla2x00_sysfs_write_fw_dump
,
419 static ssize_t
qla2x00_sysfs_read_nvram(struct kobject
*, char *, loff_t
,
421 static ssize_t
qla2x00_sysfs_write_nvram(struct kobject
*, char *, loff_t
,
423 static struct bin_attribute sysfs_nvram_attr
= {
426 .mode
= S_IRUSR
| S_IWUSR
,
427 .owner
= THIS_MODULE
,
429 .size
= sizeof(nvram_t
),
430 .read
= qla2x00_sysfs_read_nvram
,
431 .write
= qla2x00_sysfs_write_nvram
,
434 /* -------------------------------------------------------------------------- */
437 /* SysFS attributes. */
438 static ssize_t
qla2x00_sysfs_read_fw_dump(struct kobject
*kobj
, char *buf
,
439 loff_t off
, size_t count
)
441 struct scsi_qla_host
*ha
= to_qla_host(dev_to_shost(container_of(kobj
,
442 struct device
, kobj
)));
444 if (ha
->fw_dump_reading
== 0)
446 if (off
> ha
->fw_dump_buffer_len
)
448 if (off
+ count
> ha
->fw_dump_buffer_len
)
449 count
= ha
->fw_dump_buffer_len
- off
;
451 memcpy(buf
, &ha
->fw_dump_buffer
[off
], count
);
456 static ssize_t
qla2x00_sysfs_write_fw_dump(struct kobject
*kobj
, char *buf
,
457 loff_t off
, size_t count
)
459 struct scsi_qla_host
*ha
= to_qla_host(dev_to_shost(container_of(kobj
,
460 struct device
, kobj
)));
467 reading
= simple_strtol(buf
, NULL
, 10);
470 if (ha
->fw_dump_reading
== 1) {
471 qla_printk(KERN_INFO
, ha
,
472 "Firmware dump cleared on (%ld).\n",
475 vfree(ha
->fw_dump_buffer
);
476 free_pages((unsigned long)ha
->fw_dump
,
479 ha
->fw_dump_reading
= 0;
480 ha
->fw_dump_buffer
= NULL
;
485 if (ha
->fw_dump
!= NULL
&& !ha
->fw_dump_reading
) {
486 ha
->fw_dump_reading
= 1;
488 dump_size
= FW_DUMP_SIZE_1M
;
489 if (ha
->fw_memory_size
< 0x20000)
490 dump_size
= FW_DUMP_SIZE_128K
;
491 else if (ha
->fw_memory_size
< 0x80000)
492 dump_size
= FW_DUMP_SIZE_512K
;
493 ha
->fw_dump_buffer
= (char *)vmalloc(dump_size
);
494 if (ha
->fw_dump_buffer
== NULL
) {
495 qla_printk(KERN_WARNING
, ha
,
496 "Unable to allocate memory for firmware "
497 "dump buffer (%d).\n", dump_size
);
499 ha
->fw_dump_reading
= 0;
502 qla_printk(KERN_INFO
, ha
,
503 "Firmware dump ready for read on (%ld).\n",
505 memset(ha
->fw_dump_buffer
, 0, dump_size
);
506 if (IS_QLA2100(ha
) || IS_QLA2200(ha
))
507 qla2100_ascii_fw_dump(ha
);
509 qla2300_ascii_fw_dump(ha
);
510 ha
->fw_dump_buffer_len
= strlen(ha
->fw_dump_buffer
);
517 static ssize_t
qla2x00_sysfs_read_nvram(struct kobject
*kobj
, char *buf
,
518 loff_t off
, size_t count
)
520 struct scsi_qla_host
*ha
= to_qla_host(dev_to_shost(container_of(kobj
,
521 struct device
, kobj
)));
526 if (!capable(CAP_SYS_ADMIN
) || off
!= 0 || count
!= sizeof(nvram_t
))
530 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
531 qla2x00_lock_nvram_access(ha
);
532 witer
= (uint16_t *)buf
;
533 for (cnt
= 0; cnt
< count
/ 2; cnt
++) {
534 *witer
= cpu_to_le16(qla2x00_get_nvram_word(ha
,
535 cnt
+ha
->nvram_base
));
538 qla2x00_unlock_nvram_access(ha
);
539 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
544 static ssize_t
qla2x00_sysfs_write_nvram(struct kobject
*kobj
, char *buf
,
545 loff_t off
, size_t count
)
547 struct scsi_qla_host
*ha
= to_qla_host(dev_to_shost(container_of(kobj
,
548 struct device
, kobj
)));
555 if (!capable(CAP_SYS_ADMIN
) || off
!= 0 || count
!= sizeof(nvram_t
))
558 /* Checksum NVRAM. */
559 iter
= (uint8_t *)buf
;
561 for (cnt
= 0; cnt
< count
- 1; cnt
++)
563 chksum
= ~chksum
+ 1;
567 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
568 qla2x00_lock_nvram_access(ha
);
569 qla2x00_release_nvram_protection(ha
);
570 witer
= (uint16_t *)buf
;
571 for (cnt
= 0; cnt
< count
/ 2; cnt
++) {
572 qla2x00_write_nvram_word(ha
, cnt
+ha
->nvram_base
,
573 cpu_to_le16(*witer
));
576 qla2x00_unlock_nvram_access(ha
);
577 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
582 /* -------------------------------------------------------------------------- */
584 qla2x00_get_pci_info_str(struct scsi_qla_host
*ha
, char *str
)
586 static char *pci_bus_modes
[] = {
587 "33", "66", "100", "133",
592 pci_bus
= (ha
->pci_attr
& (BIT_9
| BIT_10
)) >> 9;
595 strcat(str
, pci_bus_modes
[pci_bus
]);
597 pci_bus
= (ha
->pci_attr
& BIT_8
) >> 8;
599 strcat(str
, pci_bus_modes
[pci_bus
]);
601 strcat(str
, " MHz)");
607 qla2x00_get_fw_version_str(struct scsi_qla_host
*ha
, char *str
)
611 sprintf(str
, "%d.%02d.%02d ", ha
->fw_major_version
,
612 ha
->fw_minor_version
,
613 ha
->fw_subminor_version
);
615 if (ha
->fw_attributes
& BIT_9
) {
620 switch (ha
->fw_attributes
& 0xFF) {
634 sprintf(un_str
, "(%x)", ha
->fw_attributes
);
638 if (ha
->fw_attributes
& 0x100)
644 /**************************************************************************
645 * qla2x00_queuecommand
648 * Queue a command to the controller.
651 * cmd - pointer to Scsi cmd structure
652 * fn - pointer to Scsi done function
658 * The mid-level driver tries to ensures that queuecommand never gets invoked
659 * concurrently with itself or the interrupt handler (although the
660 * interrupt handler may call this routine as part of request-completion
662 **************************************************************************/
664 qla2x00_queuecommand(struct scsi_cmnd
*cmd
, void (*fn
)(struct scsi_cmnd
*))
669 scsi_qla_host_t
*ha
, *ha2
;
671 struct Scsi_Host
*host
;
672 unsigned int b
, t
, l
;
673 unsigned long handle
;
677 host
= cmd
->device
->host
;
678 ha
= (scsi_qla_host_t
*) host
->hostdata
;
683 spin_unlock_irq(ha
->host
->host_lock
);
686 * Allocate a command packet from the "sp" pool. If we cant get back
687 * one then let scsi layer come back later.
689 if ((sp
= qla2x00_get_new_sp(ha
)) == NULL
) {
690 qla_printk(KERN_WARNING
, ha
,
691 "Couldn't allocate memory for sp - retried.\n");
693 spin_lock_irq(ha
->host
->host_lock
);
699 CMD_SP(cmd
) = (void *)sp
;
702 if (CMD_RESID_LEN(cmd
) & SRB_IOCTL
) {
703 /* Need to set sp->flags */
704 sp
->flags
|= SRB_IOCTL
;
705 CMD_RESID_LEN(cmd
) = 0; /* Clear it since no more use. */
708 sp
->fo_retry_cnt
= 0;
711 /* Generate LU queue on bus, target, LUN */
712 b
= cmd
->device
->channel
;
714 l
= cmd
->device
->lun
;
717 * Start Command Timer. Typically it will be 2 seconds less than what
718 * is requested by the Host such that we can return the IO before
721 if ((cmd
->timeout_per_command
/ HZ
) > QLA_CMD_TIMER_DELTA
)
722 qla2x00_add_timer_to_cmd(sp
,
723 (cmd
->timeout_per_command
/ HZ
) - QLA_CMD_TIMER_DELTA
);
725 qla2x00_add_timer_to_cmd(sp
, cmd
->timeout_per_command
/ HZ
);
727 if (l
>= ha
->max_luns
) {
728 cmd
->result
= DID_NO_CONNECT
<< 16;
729 sp
->err_id
= SRB_ERR_PORT
;
731 spin_lock_irq(ha
->host
->host_lock
);
738 if ((tq
= (os_tgt_t
*) TGT_Q(ha
, t
)) != NULL
&&
739 (lq
= (os_lun_t
*) LUN_Q(ha
, t
, l
)) != NULL
) {
740 fcport
= lq
->fclun
->fcport
;
748 /* Set an invalid handle until we issue the command to ISP */
749 /* then we will set the real handle value. */
750 handle
= INVALID_HANDLE
;
751 cmd
->host_scribble
= (unsigned char *)handle
;
753 /* Bookkeeping information */
754 sp
->r_start
= jiffies
; /* Time the request was recieved. */
757 /* Setup device queue pointers. */
764 * 1. When device is added from persistent binding but has not been
765 * discovered yet.The state of loopid == PORT_AVAIL.
766 * 2. When device is never found on the bus.(loopid == UNUSED)
768 * IF Device Queue is not created, or device is not in a valid state
769 * and link down error reporting is enabled, reject IO.
771 if (fcport
== NULL
) {
772 DEBUG3(printk("scsi(%ld:%2d:%2d): port unavailable\n",
775 cmd
->result
= DID_NO_CONNECT
<< 16;
776 sp
->err_id
= SRB_ERR_PORT
;
778 spin_lock_irq(ha
->host
->host_lock
);
785 /* Only modify the allowed count if the target is a *non* tape device */
786 if ((fcport
->flags
& FCF_TAPE_PRESENT
) == 0) {
787 sp
->flags
&= ~SRB_TAPE
;
788 if (cmd
->allowed
< ql2xretrycount
) {
789 cmd
->allowed
= ql2xretrycount
;
792 sp
->flags
|= SRB_TAPE
;
794 DEBUG5(printk("scsi(%ld:%2d:%2d): (queuecmd) queue sp = %p, "
795 "flags=0x%x fo retry=%d, pid=%ld\n",
796 ha
->host_no
, t
, l
, sp
, sp
->flags
, sp
->fo_retry_cnt
,
797 cmd
->serial_number
));
798 DEBUG5(qla2x00_print_scsi_cmd(cmd
));
800 sp
->fclun
= lq
->fclun
;
803 if (cmd
->sc_data_direction
== DMA_BIDIRECTIONAL
&&
804 cmd
->request_bufflen
!= 0) {
806 DEBUG2(printk(KERN_WARNING
807 "scsi(%ld): Incorrect data direction - transfer "
808 "length=%d, direction=%d, pid=%ld, opcode=%x\n",
809 ha
->host_no
, cmd
->request_bufflen
, cmd
->sc_data_direction
,
810 cmd
->serial_number
, cmd
->cmnd
[0]));
815 * Either PORT_DOWN_TIMER OR LINK_DOWN_TIMER Expired.
817 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
||
818 atomic_read(&ha2
->loop_state
) == LOOP_DEAD
) {
820 * Add the command to the done-queue for later failover
823 cmd
->result
= DID_NO_CONNECT
<< 16;
824 if (atomic_read(&ha2
->loop_state
) == LOOP_DOWN
)
825 sp
->err_id
= SRB_ERR_LOOP
;
827 sp
->err_id
= SRB_ERR_PORT
;
829 add_to_done_queue(ha
, sp
);
832 spin_lock_irq(ha
->host
->host_lock
);
836 if (tq
&& test_bit(TQF_SUSPENDED
, &tq
->flags
) &&
837 (sp
->flags
& SRB_TAPE
) == 0) {
838 /* If target suspended put incoming I/O in retry_q. */
839 qla2x00_extend_timeout(sp
->cmd
, 10);
840 add_to_scsi_retry_queue(ha
, sp
);
842 was_empty
= add_to_pending_queue(ha
, sp
);
844 if ((IS_QLA2100(ha
) || IS_QLA2200(ha
)) && ha
->flags
.online
) {
845 if (ha
->response_ring_ptr
->signature
!= RESPONSE_PROCESSED
) {
848 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
849 qla2x00_process_response_queue(ha
);
850 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
854 /* We submit to the hardware if:
856 * 1) we're on the cpu the irq's arrive on or
857 * 2) there are very few io's outstanding.
859 * In all other cases we'll let an irq pick up our IO and submit it
860 * to the controller to improve affinity.
862 if (_smp_processor_id() == ha
->last_irq_cpu
|| was_empty
)
865 spin_lock_irq(ha
->host
->host_lock
);
871 * qla2x00_eh_wait_on_command
872 * Waits for the command to be returned by the Firmware for some
876 * ha = actual ha whose done queue will contain the command
877 * returned by firmware.
878 * cmd = Scsi Command to wait on.
879 * flag = Abort/Reset(Bus or Device Reset)
886 qla2x00_eh_wait_on_command(scsi_qla_host_t
*ha
, struct scsi_cmnd
*cmd
)
888 #define ABORT_POLLING_PERIOD HZ
889 #define ABORT_WAIT_TIME ((10 * HZ) / (ABORT_POLLING_PERIOD))
894 struct list_head
*list
, *temp
;
895 u_long max_wait_time
= ABORT_WAIT_TIME
;
898 /* Check on done queue */
899 spin_lock(&ha
->list_lock
);
900 list_for_each_safe(list
, temp
, &ha
->done_queue
) {
901 rp
= list_entry(list
, srb_t
, list
);
904 * Found command. Just exit and wait for the cmd sent
907 if (cmd
== rp
->cmd
) {
909 DEBUG3(printk("%s: found in done queue.\n",
914 spin_unlock(&ha
->list_lock
);
916 /* Complete the cmd right away. */
918 qla2x00_delete_from_done_queue(ha
, rp
);
924 spin_unlock_irq(ha
->host
->host_lock
);
926 set_current_state(TASK_UNINTERRUPTIBLE
);
927 schedule_timeout(ABORT_POLLING_PERIOD
);
929 spin_lock_irq(ha
->host
->host_lock
);
931 } while ((max_wait_time
--));
934 DEBUG2(printk(KERN_INFO
"%s: found cmd=%p.\n", __func__
, cmd
));
940 * qla2x00_wait_for_hba_online
941 * Wait till the HBA is online after going through
942 * <= MAX_RETRIES_OF_ISP_ABORT or
943 * finally HBA is disabled ie marked offline
946 * ha - pointer to host adapter structure
949 * Does context switching-Release SPIN_LOCK
950 * (if any) before calling this routine.
953 * Success (Adapter is online) : 0
954 * Failed (Adapter is offline/disabled) : 1
957 qla2x00_wait_for_hba_online(scsi_qla_host_t
*ha
)
960 unsigned long wait_online
;
962 wait_online
= jiffies
+ (MAX_LOOP_TIMEOUT
* HZ
);
963 while (((test_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
)) ||
964 test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
) ||
965 test_bit(ISP_ABORT_RETRY
, &ha
->dpc_flags
) ||
966 ha
->dpc_active
) && time_before(jiffies
, wait_online
)) {
970 if (ha
->flags
.online
)
971 return_status
= QLA_SUCCESS
;
973 return_status
= QLA_FUNCTION_FAILED
;
975 DEBUG2(printk("%s return_status=%d\n",__func__
,return_status
));
977 return (return_status
);
981 * qla2x00_wait_for_loop_ready
982 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
983 * to be in LOOP_READY state.
985 * ha - pointer to host adapter structure
988 * Does context switching-Release SPIN_LOCK
989 * (if any) before calling this routine.
993 * Success (LOOP_READY) : 0
994 * Failed (LOOP_NOT_READY) : 1
997 qla2x00_wait_for_loop_ready(scsi_qla_host_t
*ha
)
999 int return_status
= QLA_SUCCESS
;
1000 unsigned long loop_timeout
;
1002 /* wait for 5 min at the max for loop to be ready */
1003 loop_timeout
= jiffies
+ (MAX_LOOP_TIMEOUT
* HZ
);
1005 while ((!atomic_read(&ha
->loop_down_timer
) &&
1006 atomic_read(&ha
->loop_state
) == LOOP_DOWN
) ||
1007 test_bit(CFG_ACTIVE
, &ha
->cfg_flags
) ||
1008 atomic_read(&ha
->loop_state
) != LOOP_READY
) {
1010 if (time_after_eq(jiffies
, loop_timeout
)) {
1011 return_status
= QLA_FUNCTION_FAILED
;
1015 return (return_status
);
1018 /**************************************************************************
1022 * The abort function will abort the specified command.
1025 * cmd = Linux SCSI command packet to be aborted.
1028 * Either SUCCESS or FAILED.
1031 **************************************************************************/
1033 qla2xxx_eh_abort(struct scsi_cmnd
*cmd
)
1036 int return_status
= FAILED
;
1038 scsi_qla_host_t
*ha
;
1039 scsi_qla_host_t
*vis_ha
;
1042 struct list_head
*list
, *temp
;
1043 struct Scsi_Host
*host
;
1045 unsigned int b
, t
, l
;
1047 /* Get the SCSI request ptr */
1048 sp
= (srb_t
*) CMD_SP(cmd
);
1051 * If sp is NULL, command is already returned.
1052 * sp is NULLED just before we call back scsi_done
1056 /* no action - we don't have command */
1057 qla_printk(KERN_INFO
, to_qla_host(cmd
->device
->host
),
1058 "qla2xxx_eh_abort: cmd already done sp=%p\n", sp
);
1059 DEBUG(printk("qla2xxx_eh_abort: cmd already done sp=%p\n", sp
);)
1063 DEBUG(printk("qla2xxx_eh_abort: refcount %i \n",
1064 atomic_read(&sp
->ref_count
));)
1067 vis_ha
= (scsi_qla_host_t
*) cmd
->device
->host
->hostdata
;
1068 ha
= (scsi_qla_host_t
*)cmd
->device
->host
->hostdata
;
1072 /* Generate LU queue on bus, target, LUN */
1073 b
= cmd
->device
->channel
;
1074 t
= cmd
->device
->id
;
1075 l
= cmd
->device
->lun
;
1076 q
= GET_LU_Q(vis_ha
, t
, l
);
1078 qla_printk(KERN_INFO
, ha
,
1079 "%s scsi(%ld:%d:%d:%d): cmd_timeout_in_sec=0x%x.\n", __func__
,
1080 ha
->host_no
, (int)b
, (int)t
, (int)l
,
1081 cmd
->timeout_per_command
/ HZ
);
1084 * if no LUN queue then something is very wrong!!!
1087 qla_printk(KERN_WARNING
, ha
,
1088 "qla2x00: (%x:%x:%x) No LUN queue.\n", b
, t
, l
);
1090 /* no action - we don't have command */
1094 DEBUG2(printk("scsi(%ld): ABORTing cmd=%p sp=%p jiffies = 0x%lx, "
1095 "timeout=%x, dpc_flags=%lx, vis_ha->dpc_flags=%lx q->flag=%lx\n",
1096 ha
->host_no
, cmd
, sp
, jiffies
, cmd
->timeout_per_command
/ HZ
,
1097 ha
->dpc_flags
, vis_ha
->dpc_flags
, q
->q_flag
));
1098 DEBUG2(qla2x00_print_scsi_cmd(cmd
));
1100 spin_unlock_irq(ha
->host
->host_lock
);
1101 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
1102 DEBUG2(printk("%s failed:board disabled\n", __func__
);)
1103 spin_lock_irq(ha
->host
->host_lock
);
1106 spin_lock_irq(ha
->host
->host_lock
);
1108 /* Search done queue */
1109 spin_lock(&ha
->list_lock
);
1110 list_for_each_safe(list
, temp
, &ha
->done_queue
) {
1111 rp
= list_entry(list
, srb_t
, list
);
1117 * Found command.Remove it from done list.
1118 * And proceed to post completion to scsi mid layer.
1120 return_status
= SUCCESS
;
1122 qla2x00_delete_from_done_queue(ha
, sp
);
1125 } /* list_for_each_safe() */
1126 spin_unlock(&ha
->list_lock
);
1129 * Return immediately if the aborted command was already in the done
1133 qla_printk(KERN_INFO
, ha
,
1134 "qla2xxx_eh_abort: Returning completed command=%p sp=%p\n",
1137 return (return_status
);
1142 * See if this command is in the retry queue
1144 DEBUG3(printk("qla2xxx_eh_abort: searching sp %p in retry "
1147 spin_lock(&ha
->list_lock
);
1148 list_for_each_safe(list
, temp
, &ha
->retry_queue
) {
1149 rp
= list_entry(list
, srb_t
, list
);
1155 DEBUG2(printk("qla2xxx_eh_abort: found "
1156 "in retry queue. SP=%p\n", sp
);)
1158 __del_from_retry_queue(ha
, rp
);
1159 cmd
->result
= DID_ABORT
<< 16;
1160 __add_to_done_queue(ha
, rp
);
1162 return_status
= SUCCESS
;
1168 spin_unlock(&ha
->list_lock
);
1172 * Our SP pointer points at the command we want to remove from the
1173 * pending queue providing we haven't already sent it to the adapter.
1176 DEBUG3(printk("qla2xxx_eh_abort: searching sp %p "
1177 "in pending queue.\n", sp
);)
1179 spin_lock(&vis_ha
->list_lock
);
1180 list_for_each_safe(list
, temp
, &vis_ha
->pending_queue
) {
1181 rp
= list_entry(list
, srb_t
, list
);
1186 /* Remove srb from LUN queue. */
1187 rp
->flags
|= SRB_ABORTED
;
1189 DEBUG2(printk("qla2xxx_eh_abort: Cmd in pending queue."
1190 " serial_number %ld.\n",
1191 sp
->cmd
->serial_number
);)
1193 __del_from_pending_queue(vis_ha
, rp
);
1194 cmd
->result
= DID_ABORT
<< 16;
1196 __add_to_done_queue(vis_ha
, rp
);
1198 return_status
= SUCCESS
;
1202 } /* list_for_each_safe() */
1203 spin_unlock(&vis_ha
->list_lock
);
1204 } /*End of if !found */
1206 if (!found
) { /* find the command in our active list */
1207 DEBUG3(printk("qla2xxx_eh_abort: searching sp %p "
1208 "in outstanding queue.\n", sp
);)
1210 spin_lock(&ha
->hardware_lock
);
1211 for (i
= 1; i
< MAX_OUTSTANDING_COMMANDS
; i
++) {
1212 sp
= ha
->outstanding_cmds
[i
];
1220 DEBUG2(printk("qla2xxx_eh_abort(%ld): aborting sp %p "
1221 "from RISC. pid=%ld sp->state=%x q->q_flag=%lx\n",
1222 ha
->host_no
, sp
, sp
->cmd
->serial_number
,
1223 sp
->state
, q
->q_flag
);)
1224 DEBUG(qla2x00_print_scsi_cmd(cmd
);)
1226 /* Get a reference to the sp and drop the lock.*/
1229 spin_unlock(&ha
->hardware_lock
);
1230 spin_unlock_irq(ha
->host
->host_lock
);
1232 if (qla2x00_abort_command(ha
, sp
)) {
1233 DEBUG2(printk("qla2xxx_eh_abort: abort_command "
1235 return_status
= FAILED
;
1237 DEBUG3(printk("qla2xxx_eh_abort: abort_command "
1238 " mbx success.\n");)
1239 return_status
= SUCCESS
;
1244 spin_lock_irq(ha
->host
->host_lock
);
1245 spin_lock(&ha
->hardware_lock
);
1248 * Regardless of mailbox command status, go check on
1249 * done queue just in case the sp is already done.
1253 }/*End of for loop */
1254 spin_unlock(&ha
->hardware_lock
);
1256 } /*End of if !found */
1258 /* Waiting for our command in done_queue to be returned to OS.*/
1259 if (qla2x00_eh_wait_on_command(ha
, cmd
) != 0) {
1260 DEBUG2(printk("qla2xxx_eh_abort: cmd returned back to OS.\n");)
1261 return_status
= SUCCESS
;
1264 if (return_status
== FAILED
) {
1265 qla_printk(KERN_INFO
, ha
,
1266 "qla2xxx_eh_abort Exiting: status=Failed\n");
1270 DEBUG2(printk("qla2xxx_eh_abort: Exiting. return_status=0x%x.\n",
1273 return return_status
;
1276 /**************************************************************************
1277 * qla2x00_eh_wait_for_pending_target_commands
1280 * Waits for all the commands to come back from the specified target.
1283 * ha - pointer to scsi_qla_host structure.
1286 * Either SUCCESS or FAILED.
1289 **************************************************************************/
1291 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t
*ha
, unsigned int t
)
1296 struct scsi_cmnd
*cmd
;
1301 * Waiting for all commands for the designated target in the active
1304 for (cnt
= 1; cnt
< MAX_OUTSTANDING_COMMANDS
; cnt
++) {
1305 spin_lock(&ha
->hardware_lock
);
1306 sp
= ha
->outstanding_cmds
[cnt
];
1309 spin_unlock(&ha
->hardware_lock
);
1310 if (cmd
->device
->id
== t
) {
1311 if (!qla2x00_eh_wait_on_command(ha
, cmd
)) {
1318 spin_unlock(&ha
->hardware_lock
);
1325 /**************************************************************************
1326 * qla2xxx_eh_device_reset
1329 * The device reset function will reset the target and abort any
1330 * executing commands.
1332 * NOTE: The use of SP is undefined within this context. Do *NOT*
1333 * attempt to use this value, even if you determine it is
1337 * cmd = Linux SCSI command packet of the command that cause the
1341 * SUCCESS/FAILURE (defined as macro in scsi.h).
1343 **************************************************************************/
1345 qla2xxx_eh_device_reset(struct scsi_cmnd
*cmd
)
1348 unsigned int b
, t
, l
;
1349 scsi_qla_host_t
*ha
;
1352 fc_port_t
*fcport_to_reset
;
1354 struct list_head
*list
, *temp
;
1356 return_status
= FAILED
;
1359 "%s(): **** SCSI mid-layer passing in NULL cmd\n",
1362 return (return_status
);
1365 b
= cmd
->device
->channel
;
1366 t
= cmd
->device
->id
;
1367 l
= cmd
->device
->lun
;
1368 ha
= (scsi_qla_host_t
*)cmd
->device
->host
->hostdata
;
1372 qla_printk(KERN_INFO
, ha
,
1373 "%s(): **** CMD derives a NULL TGT_Q\n", __func__
);
1375 return (return_status
);
1377 lq
= (os_lun_t
*)LUN_Q(ha
, t
, l
);
1380 "%s(): **** CMD derives a NULL LUN_Q\n", __func__
);
1382 return (return_status
);
1384 fcport_to_reset
= lq
->fclun
->fcport
;
1386 /* If we are coming in from the back-door, stall I/O until complete. */
1387 if (!cmd
->device
->host
->eh_active
)
1388 set_bit(TQF_SUSPENDED
, &tq
->flags
);
1390 qla_printk(KERN_INFO
, ha
,
1391 "scsi(%ld:%d:%d:%d): DEVICE RESET ISSUED.\n", ha
->host_no
, b
, t
, l
);
1393 DEBUG2(printk(KERN_INFO
1394 "scsi(%ld): DEVICE_RESET cmd=%p jiffies = 0x%lx, timeout=%x, "
1395 "dpc_flags=%lx, status=%x allowed=%d cmd.state=%x\n",
1396 ha
->host_no
, cmd
, jiffies
, cmd
->timeout_per_command
/ HZ
,
1397 ha
->dpc_flags
, cmd
->result
, cmd
->allowed
, cmd
->state
));
1399 /* Clear commands from the retry queue. */
1400 spin_lock(&ha
->list_lock
);
1401 list_for_each_safe(list
, temp
, &ha
->retry_queue
) {
1402 rp
= list_entry(list
, srb_t
, list
);
1404 if (t
!= rp
->cmd
->device
->id
)
1407 DEBUG2(printk(KERN_INFO
1408 "qla2xxx_eh_reset: found in retry queue. SP=%p\n", rp
));
1410 __del_from_retry_queue(ha
, rp
);
1411 rp
->cmd
->result
= DID_RESET
<< 16;
1412 __add_to_done_queue(ha
, rp
);
1414 spin_unlock(&ha
->list_lock
);
1416 spin_unlock_irq(ha
->host
->host_lock
);
1418 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
1419 DEBUG2(printk(KERN_INFO
1420 "%s failed:board disabled\n",__func__
));
1422 spin_lock_irq(ha
->host
->host_lock
);
1423 goto eh_dev_reset_done
;
1426 if (qla2x00_wait_for_loop_ready(ha
) == QLA_SUCCESS
) {
1427 if (qla2x00_device_reset(ha
, fcport_to_reset
) == 0) {
1428 return_status
= SUCCESS
;
1431 #if defined(LOGOUT_AFTER_DEVICE_RESET)
1432 if (return_status
== SUCCESS
) {
1433 if (fcport_to_reset
->flags
& FC_FABRIC_DEVICE
) {
1434 qla2x00_fabric_logout(ha
,
1435 fcport_to_reset
->loop_id
);
1436 qla2x00_mark_device_lost(ha
, fcport_to_reset
);
1441 DEBUG2(printk(KERN_INFO
1442 "%s failed: loop not ready\n",__func__
);)
1445 spin_lock_irq(ha
->host
->host_lock
);
1447 if (return_status
== FAILED
) {
1448 DEBUG3(printk("%s(%ld): device reset failed\n",
1449 __func__
, ha
->host_no
));
1450 qla_printk(KERN_INFO
, ha
, "%s: device reset failed\n",
1453 goto eh_dev_reset_done
;
1457 * If we are coming down the EH path, wait for all commands to
1458 * complete for the device.
1460 if (cmd
->device
->host
->eh_active
) {
1461 if (qla2x00_eh_wait_for_pending_target_commands(ha
, t
))
1462 return_status
= FAILED
;
1464 if (return_status
== FAILED
) {
1465 DEBUG3(printk("%s(%ld): failed while waiting for "
1466 "commands\n", __func__
, ha
->host_no
));
1467 qla_printk(KERN_INFO
, ha
,
1468 "%s: failed while waiting for commands\n",
1471 goto eh_dev_reset_done
;
1475 qla_printk(KERN_INFO
, ha
,
1476 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
1477 ha
->host_no
, b
, t
, l
);
1481 if (!cmd
->device
->host
->eh_active
)
1482 clear_bit(TQF_SUSPENDED
, &tq
->flags
);
1484 return (return_status
);
1487 /**************************************************************************
1488 * qla2x00_eh_wait_for_pending_commands
1491 * Waits for all the commands to come back from the specified host.
1494 * ha - pointer to scsi_qla_host structure.
1501 **************************************************************************/
1503 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t
*ha
)
1508 struct scsi_cmnd
*cmd
;
1513 * Waiting for all commands for the designated target in the active
1516 for (cnt
= 1; cnt
< MAX_OUTSTANDING_COMMANDS
; cnt
++) {
1517 spin_lock(&ha
->hardware_lock
);
1518 sp
= ha
->outstanding_cmds
[cnt
];
1521 spin_unlock(&ha
->hardware_lock
);
1522 status
= qla2x00_eh_wait_on_command(ha
, cmd
);
1527 spin_unlock(&ha
->hardware_lock
);
1534 /**************************************************************************
1535 * qla2xxx_eh_bus_reset
1538 * The bus reset function will reset the bus and abort any executing
1542 * cmd = Linux SCSI command packet of the command that cause the
1546 * SUCCESS/FAILURE (defined as macro in scsi.h).
1548 **************************************************************************/
1550 qla2xxx_eh_bus_reset(struct scsi_cmnd
*cmd
)
1552 scsi_qla_host_t
*ha
;
1556 ha
= (scsi_qla_host_t
*) cmd
->device
->host
->hostdata
;
1557 sp
= (srb_t
*) CMD_SP(cmd
);
1559 qla_printk(KERN_INFO
, ha
,
1560 "scsi(%ld:%d:%d:%d): LOOP RESET ISSUED.\n", ha
->host_no
,
1561 cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
);
1563 spin_unlock_irq(ha
->host
->host_lock
);
1565 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
1566 DEBUG2(printk("%s failed:board disabled\n",__func__
));
1567 spin_lock_irq(ha
->host
->host_lock
);
1571 if (qla2x00_wait_for_loop_ready(ha
) == QLA_SUCCESS
) {
1572 if (qla2x00_loop_reset(ha
) == QLA_SUCCESS
)
1576 spin_lock_irq(ha
->host
->host_lock
);
1580 /* Waiting for our command in done_queue to be returned to OS.*/
1581 if (cmd
->device
->host
->eh_active
)
1582 if (!qla2x00_eh_wait_for_pending_commands(ha
))
1586 qla_printk(KERN_INFO
, ha
, "%s: reset %s\n", __func__
,
1587 (rval
== FAILED
) ? "failed" : "succeded");
1592 /**************************************************************************
1593 * qla2xxx_eh_host_reset
1596 * The reset function will reset the Adapter.
1599 * cmd = Linux SCSI command packet of the command that cause the
1603 * Either SUCCESS or FAILED.
1606 **************************************************************************/
1608 qla2xxx_eh_host_reset(struct scsi_cmnd
*cmd
)
1610 scsi_qla_host_t
*ha
= (scsi_qla_host_t
*)cmd
->device
->host
->hostdata
;
1613 /* Display which one we're actually resetting for debug. */
1614 DEBUG(printk("qla2xxx_eh_host_reset:Resetting scsi(%ld).\n",
1620 qla_printk(KERN_INFO
, ha
,
1621 "scsi(%ld:%d:%d:%d): ADAPTER RESET issued.\n", ha
->host_no
,
1622 cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
);
1624 spin_unlock_irq(ha
->host
->host_lock
);
1626 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
1627 goto board_disabled
;
1630 * Fixme-may be dpc thread is active and processing
1631 * loop_resync,so wait a while for it to
1632 * be completed and then issue big hammer.Otherwise
1633 * it may cause I/O failure as big hammer marks the
1634 * devices as lost kicking of the port_down_timer
1635 * while dpc is stuck for the mailbox to complete.
1637 /* Blocking call-Does context switching if loop is Not Ready */
1638 qla2x00_wait_for_loop_ready(ha
);
1639 set_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
1640 if (qla2x00_abort_isp(ha
)) {
1641 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
1642 /* failed. schedule dpc to try */
1643 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
1645 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
1646 goto board_disabled
;
1649 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
1651 spin_lock_irq(ha
->host
->host_lock
);
1655 /* Waiting for our command in done_queue to be returned to OS.*/
1656 if (!qla2x00_eh_wait_for_pending_commands(ha
))
1660 qla_printk(KERN_INFO
, ha
, "%s: reset %s\n", __func__
,
1661 (rval
== FAILED
) ? "failed" : "succeded");
1666 spin_lock_irq(ha
->host
->host_lock
);
1668 qla_printk(KERN_INFO
, ha
, "%s: failed:board disabled\n", __func__
);
1674 * qla2x00_loop_reset
1678 * ha = adapter block pointer.
1684 qla2x00_loop_reset(scsi_qla_host_t
*ha
)
1686 int status
= QLA_SUCCESS
;
1690 if (ha
->flags
.enable_lip_reset
) {
1691 status
= qla2x00_lip_reset(ha
);
1694 if (status
== QLA_SUCCESS
&& ha
->flags
.enable_target_reset
) {
1695 for (t
= 0; t
< MAX_FIBRE_DEVICES
; t
++) {
1696 if ((tq
= TGT_Q(ha
, t
)) == NULL
)
1699 if (tq
->fcport
== NULL
)
1702 status
= qla2x00_target_reset(ha
, 0, t
);
1703 if (status
!= QLA_SUCCESS
) {
1709 if (status
== QLA_SUCCESS
&&
1710 ((!ha
->flags
.enable_target_reset
&&
1711 !ha
->flags
.enable_lip_reset
) ||
1712 ha
->flags
.enable_lip_full_login
)) {
1714 status
= qla2x00_full_login_lip(ha
);
1717 /* Issue marker command only when we are going to start the I/O */
1718 ha
->marker_needed
= 1;
1722 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
1727 DEBUG3(printk("%s(%ld): exiting normally.\n",
1736 * qla2x00_device_reset
1737 * Issue bus device reset message to the target.
1740 * ha = adapter block pointer.
1742 * TARGET_QUEUE_LOCK must be released.
1743 * ADAPTER_STATE_LOCK must be released.
1749 qla2x00_device_reset(scsi_qla_host_t
*ha
, fc_port_t
*reset_fcport
)
1751 /* Abort Target command will clear Reservation */
1752 return qla2x00_abort_target(reset_fcport
);
1755 /**************************************************************************
1756 * qla2xxx_slave_configure
1759 **************************************************************************/
1761 qla2xxx_slave_configure(struct scsi_device
*sdev
)
1763 scsi_qla_host_t
*ha
= to_qla_host(sdev
->host
);
1766 if (IS_QLA2100(ha
) || IS_QLA2200(ha
))
1771 if (sdev
->tagged_supported
) {
1772 if (ql2xmaxqdepth
!= 0 && ql2xmaxqdepth
<= 0xffffU
)
1773 queue_depth
= ql2xmaxqdepth
;
1775 ql2xmaxqdepth
= queue_depth
;
1777 scsi_activate_tcq(sdev
, queue_depth
);
1779 qla_printk(KERN_INFO
, ha
,
1780 "scsi(%d:%d:%d:%d): Enabled tagged queuing, queue "
1782 sdev
->host
->host_no
, sdev
->channel
, sdev
->id
, sdev
->lun
,
1785 scsi_adjust_queue_depth(sdev
, 0 /* TCQ off */,
1786 sdev
->host
->hostt
->cmd_per_lun
/* 3 */);
1793 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
1796 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1797 * supported addressing method.
1800 qla2x00_config_dma_addressing(scsi_qla_host_t
*ha
)
1802 /* Assume 32bit DMA address */
1803 ha
->flags
.enable_64bit_addressing
= 0;
1804 ha
->calc_request_entries
= qla2x00_calc_iocbs_32
;
1805 ha
->build_scsi_iocbs
= qla2x00_build_scsi_iocbs_32
;
1808 * Given the two variants pci_set_dma_mask(), allow the compiler to
1809 * assist in setting the proper dma mask.
1811 if (sizeof(dma_addr_t
) > 4) {
1812 if (pci_set_dma_mask(ha
->pdev
, DMA_64BIT_MASK
) == 0) {
1813 ha
->flags
.enable_64bit_addressing
= 1;
1814 ha
->calc_request_entries
= qla2x00_calc_iocbs_64
;
1815 ha
->build_scsi_iocbs
= qla2x00_build_scsi_iocbs_64
;
1817 if (pci_set_consistent_dma_mask(ha
->pdev
,
1819 qla_printk(KERN_DEBUG
, ha
,
1820 "Failed to set 64 bit PCI consistent mask; "
1822 pci_set_consistent_dma_mask(ha
->pdev
,
1826 qla_printk(KERN_DEBUG
, ha
,
1827 "Failed to set 64 bit PCI DMA mask, falling back "
1828 "to 32 bit MASK.\n");
1829 pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1832 pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1837 qla2x00_iospace_config(scsi_qla_host_t
*ha
)
1839 unsigned long pio
, pio_len
, pio_flags
;
1840 unsigned long mmio
, mmio_len
, mmio_flags
;
1842 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1843 pio
= pci_resource_start(ha
->pdev
, 0);
1844 pio_len
= pci_resource_len(ha
->pdev
, 0);
1845 pio_flags
= pci_resource_flags(ha
->pdev
, 0);
1846 if (pio_flags
& IORESOURCE_IO
) {
1847 if (pio_len
< MIN_IOBASE_LEN
) {
1848 qla_printk(KERN_WARNING
, ha
,
1849 "Invalid PCI I/O region size (%s)...\n",
1850 pci_name(ha
->pdev
));
1854 qla_printk(KERN_WARNING
, ha
,
1855 "region #0 not a PIO resource (%s)...\n",
1856 pci_name(ha
->pdev
));
1860 /* Use MMIO operations for all accesses. */
1861 mmio
= pci_resource_start(ha
->pdev
, 1);
1862 mmio_len
= pci_resource_len(ha
->pdev
, 1);
1863 mmio_flags
= pci_resource_flags(ha
->pdev
, 1);
1865 if (!(mmio_flags
& IORESOURCE_MEM
)) {
1866 qla_printk(KERN_ERR
, ha
,
1867 "region #0 not an MMIO resource (%s), aborting\n",
1868 pci_name(ha
->pdev
));
1869 goto iospace_error_exit
;
1871 if (mmio_len
< MIN_IOBASE_LEN
) {
1872 qla_printk(KERN_ERR
, ha
,
1873 "Invalid PCI mem region size (%s), aborting\n",
1874 pci_name(ha
->pdev
));
1875 goto iospace_error_exit
;
1878 if (pci_request_regions(ha
->pdev
, ha
->brd_info
->drv_name
)) {
1879 qla_printk(KERN_WARNING
, ha
,
1880 "Failed to reserve PIO/MMIO regions (%s)\n",
1881 pci_name(ha
->pdev
));
1883 goto iospace_error_exit
;
1886 ha
->pio_address
= pio
;
1887 ha
->pio_length
= pio_len
;
1888 ha
->iobase
= ioremap(mmio
, MIN_IOBASE_LEN
);
1890 qla_printk(KERN_ERR
, ha
,
1891 "cannot remap MMIO (%s), aborting\n", pci_name(ha
->pdev
));
1893 goto iospace_error_exit
;
1903 * PCI driver interface
1905 int qla2x00_probe_one(struct pci_dev
*pdev
, struct qla_board_info
*brd_info
)
1908 device_reg_t __iomem
*reg
;
1909 struct Scsi_Host
*host
;
1910 scsi_qla_host_t
*ha
;
1911 unsigned long flags
= 0;
1912 unsigned long wait_switch
= 0;
1916 if (pci_enable_device(pdev
))
1919 host
= scsi_host_alloc(&qla2x00_driver_template
,
1920 sizeof(scsi_qla_host_t
));
1923 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1924 goto probe_disable_device
;
1927 /* Clear our data area */
1928 ha
= (scsi_qla_host_t
*)host
->hostdata
;
1929 memset(ha
, 0, sizeof(scsi_qla_host_t
));
1933 ha
->host_no
= host
->host_no
;
1934 ha
->brd_info
= brd_info
;
1935 sprintf(ha
->host_str
, "%s_%ld", ha
->brd_info
->drv_name
, ha
->host_no
);
1937 /* Configure PCI I/O space */
1938 ret
= qla2x00_iospace_config(ha
);
1943 /* Sanitize the information from PCI BIOS. */
1944 host
->irq
= pdev
->irq
;
1946 qla_printk(KERN_INFO
, ha
,
1947 "Found an %s, irq %d, iobase 0x%p\n", ha
->brd_info
->isp_name
,
1948 host
->irq
, ha
->iobase
);
1950 spin_lock_init(&ha
->hardware_lock
);
1952 /* 4.23 Initialize /proc/scsi/qla2x00 counters */
1955 ha
->total_isr_cnt
= 0;
1956 ha
->total_isp_aborts
= 0;
1957 ha
->total_lip_cnt
= 0;
1958 ha
->total_dev_errs
= 0;
1960 ha
->total_bytes
= 0;
1962 ha
->prev_topology
= 0;
1963 ha
->ports
= MAX_BUSES
;
1965 if (IS_QLA2100(ha
)) {
1966 ha
->max_targets
= MAX_TARGETS_2100
;
1967 ha
->mbx_count
= MAILBOX_REGISTER_COUNT_2100
;
1968 ha
->request_q_length
= REQUEST_ENTRY_CNT_2100
;
1969 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2100
;
1970 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2100
;
1971 host
->sg_tablesize
= 32;
1972 } else if (IS_QLA2200(ha
)) {
1973 ha
->max_targets
= MAX_TARGETS_2200
;
1974 ha
->mbx_count
= MAILBOX_REGISTER_COUNT
;
1975 ha
->request_q_length
= REQUEST_ENTRY_CNT_2200
;
1976 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2100
;
1977 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2100
;
1978 } else /*if (IS_QLA2300(ha))*/ {
1979 ha
->max_targets
= MAX_TARGETS_2200
;
1980 ha
->mbx_count
= MAILBOX_REGISTER_COUNT
;
1981 ha
->request_q_length
= REQUEST_ENTRY_CNT_2200
;
1982 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2300
;
1983 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2300
;
1985 host
->can_queue
= ha
->request_q_length
+ 128;
1987 /* load the F/W, read paramaters, and init the H/W */
1988 ha
->instance
= num_hosts
;
1990 init_MUTEX(&ha
->mbx_cmd_sem
);
1991 init_MUTEX_LOCKED(&ha
->mbx_intr_sem
);
1993 INIT_LIST_HEAD(&ha
->list
);
1994 INIT_LIST_HEAD(&ha
->fcports
);
1995 INIT_LIST_HEAD(&ha
->rscn_fcports
);
1996 INIT_LIST_HEAD(&ha
->done_queue
);
1997 INIT_LIST_HEAD(&ha
->retry_queue
);
1998 INIT_LIST_HEAD(&ha
->scsi_retry_queue
);
1999 INIT_LIST_HEAD(&ha
->pending_queue
);
2002 * These locks are used to prevent more than one CPU
2003 * from modifying the queue at the same time. The
2004 * higher level "host_lock" will reduce most
2005 * contention for these locks.
2007 spin_lock_init(&ha
->mbx_reg_lock
);
2008 spin_lock_init(&ha
->list_lock
);
2011 init_completion(&ha
->dpc_inited
);
2012 init_completion(&ha
->dpc_exited
);
2014 qla2x00_config_dma_addressing(ha
);
2015 if (qla2x00_mem_alloc(ha
)) {
2016 qla_printk(KERN_WARNING
, ha
,
2017 "[ERROR] Failed to allocate memory for adapter\n");
2022 if (qla2x00_initialize_adapter(ha
) &&
2023 !(ha
->device_flags
& DFLG_NO_CABLE
)) {
2025 qla_printk(KERN_WARNING
, ha
,
2026 "Failed to initialize adapter\n");
2028 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
2029 "Adapter flags %x.\n",
2030 ha
->host_no
, ha
->device_flags
));
2036 * Startup the kernel thread for this host adapter
2038 ha
->dpc_should_die
= 0;
2039 ha
->dpc_pid
= kernel_thread(qla2x00_do_dpc
, ha
, 0);
2040 if (ha
->dpc_pid
< 0) {
2041 qla_printk(KERN_WARNING
, ha
,
2042 "Unable to start DPC thread!\n");
2046 wait_for_completion(&ha
->dpc_inited
);
2048 host
->this_id
= 255;
2049 host
->cmd_per_lun
= 3;
2050 host
->max_cmd_len
= MAX_CMDSZ
;
2051 host
->max_channel
= ha
->ports
- 1;
2052 host
->max_lun
= ha
->max_luns
;
2053 BUG_ON(qla2xxx_transport_template
== NULL
);
2054 host
->transportt
= qla2xxx_transport_template
;
2055 host
->unique_id
= ha
->instance
;
2056 host
->max_id
= ha
->max_targets
;
2058 if (IS_QLA2100(ha
) || IS_QLA2200(ha
))
2059 ret
= request_irq(host
->irq
, qla2100_intr_handler
,
2060 SA_INTERRUPT
|SA_SHIRQ
, ha
->brd_info
->drv_name
, ha
);
2062 ret
= request_irq(host
->irq
, qla2300_intr_handler
,
2063 SA_INTERRUPT
|SA_SHIRQ
, ha
->brd_info
->drv_name
, ha
);
2065 qla_printk(KERN_WARNING
, ha
,
2066 "Failed to reserve interrupt %d already in use.\n",
2071 /* Initialized the timer */
2072 qla2x00_start_timer(ha
, qla2x00_timer
, WATCH_INTERVAL
);
2074 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
2079 /* Disable ISP interrupts. */
2080 qla2x00_disable_intrs(ha
);
2082 /* Ensure mailbox registers are free. */
2083 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
2084 WRT_REG_WORD(®
->semaphore
, 0);
2085 WRT_REG_WORD(®
->hccr
, HCCR_CLR_RISC_INT
);
2086 WRT_REG_WORD(®
->hccr
, HCCR_CLR_HOST_INT
);
2088 /* Enable proper parity */
2089 if (!IS_QLA2100(ha
) && !IS_QLA2200(ha
)) {
2092 WRT_REG_WORD(®
->hccr
, (HCCR_ENABLE_PARITY
+ 0x1));
2094 /* SRAM, Instruction RAM and GP RAM parity */
2095 WRT_REG_WORD(®
->hccr
, (HCCR_ENABLE_PARITY
+ 0x7));
2097 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
2099 /* Enable chip interrupts. */
2100 qla2x00_enable_intrs(ha
);
2104 * Wait around max loop_reset_delay secs for the devices to come
2105 * on-line. We don't want Linux scanning before we are ready.
2108 for (wait_switch
= jiffies
+ (ha
->loop_reset_delay
* HZ
);
2109 time_before(jiffies
,wait_switch
) &&
2110 !(ha
->device_flags
& (DFLG_NO_CABLE
| DFLG_FABRIC_DEVICES
))
2111 && (ha
->device_flags
& SWITCH_FOUND
) ;) {
2113 qla2x00_check_fabric_devices(ha
);
2118 pci_set_drvdata(pdev
, ha
);
2119 ha
->flags
.init_done
= 1;
2122 /* List the target we have found */
2123 if (displayConfig
) {
2124 qla2x00_display_fc_names(ha
);
2127 if (scsi_add_host(host
, &pdev
->dev
))
2130 sysfs_create_bin_file(&host
->shost_gendev
.kobj
, &sysfs_fw_dump_attr
);
2131 sysfs_create_bin_file(&host
->shost_gendev
.kobj
, &sysfs_nvram_attr
);
2133 qla_printk(KERN_INFO
, ha
, "\n"
2134 " QLogic Fibre Channel HBA Driver: %s\n"
2136 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str
,
2137 ha
->model_number
, ha
->model_desc
? ha
->model_desc
: "",
2138 ha
->brd_info
->isp_name
, qla2x00_get_pci_info_str(ha
, pci_info
),
2139 pci_name(ha
->pdev
), ha
->flags
.enable_64bit_addressing
? '+': '-',
2140 ha
->host_no
, qla2x00_get_fw_version_str(ha
, fw_str
));
2143 scsi_scan_host(host
);
2148 qla2x00_free_device(ha
);
2150 scsi_host_put(host
);
2152 probe_disable_device
:
2153 pci_disable_device(pdev
);
2157 EXPORT_SYMBOL_GPL(qla2x00_probe_one
);
2159 void qla2x00_remove_one(struct pci_dev
*pdev
)
2161 scsi_qla_host_t
*ha
;
2163 ha
= pci_get_drvdata(pdev
);
2165 sysfs_remove_bin_file(&ha
->host
->shost_gendev
.kobj
,
2166 &sysfs_fw_dump_attr
);
2167 sysfs_remove_bin_file(&ha
->host
->shost_gendev
.kobj
, &sysfs_nvram_attr
);
2169 scsi_remove_host(ha
->host
);
2171 qla2x00_free_device(ha
);
2173 scsi_host_put(ha
->host
);
2175 pci_set_drvdata(pdev
, NULL
);
2177 EXPORT_SYMBOL_GPL(qla2x00_remove_one
);
2180 qla2x00_free_device(scsi_qla_host_t
*ha
)
2184 /* Abort any outstanding IO descriptors. */
2185 if (!IS_QLA2100(ha
) && !IS_QLA2200(ha
))
2186 qla2x00_cancel_io_descriptors(ha
);
2188 /* turn-off interrupts on the card */
2189 if (ha
->interrupts_on
)
2190 qla2x00_disable_intrs(ha
);
2193 if (ha
->timer_active
)
2194 qla2x00_stop_timer(ha
);
2196 /* Kill the kernel thread for this host */
2197 if (ha
->dpc_pid
>= 0) {
2198 ha
->dpc_should_die
= 1;
2200 ret
= kill_proc(ha
->dpc_pid
, SIGHUP
, 1);
2202 qla_printk(KERN_ERR
, ha
,
2203 "Unable to signal DPC thread -- (%d)\n", ret
);
2205 /* TODO: SOMETHING MORE??? */
2207 wait_for_completion(&ha
->dpc_exited
);
2211 qla2x00_mem_free(ha
);
2214 ha
->flags
.online
= 0;
2216 /* Detach interrupts */
2218 free_irq(ha
->pdev
->irq
, ha
);
2220 /* release io space registers */
2222 iounmap(ha
->iobase
);
2223 pci_release_regions(ha
->pdev
);
2225 pci_disable_device(ha
->pdev
);
2230 * The following support functions are adopted to handle
2231 * the re-entrant qla2x00_proc_info correctly.
2234 copy_mem_info(struct info_str
*info
, char *data
, int len
)
2236 if (info
->pos
+ len
> info
->offset
+ info
->length
)
2237 len
= info
->offset
+ info
->length
- info
->pos
;
2239 if (info
->pos
+ len
< info
->offset
) {
2244 if (info
->pos
< info
->offset
) {
2247 partial
= info
->offset
- info
->pos
;
2249 info
->pos
+= partial
;
2254 memcpy(info
->buffer
, data
, len
);
2256 info
->buffer
+= len
;
2261 copy_info(struct info_str
*info
, char *fmt
, ...)
2267 va_start(args
, fmt
);
2268 len
= vsprintf(buf
, fmt
, args
);
2271 copy_mem_info(info
, buf
, len
);
2276 /*************************************************************************
2280 * Return information to handle /proc support for the driver.
2282 * inout : decides the direction of the dataflow and the meaning of the
2284 * buffer: If inout==0 data is being written to it else read from it
2285 * (ptr to a page buffer)
2286 * *start: If inout==0 start of the valid data in the buffer
2287 * offset: If inout==0 starting offset from the beginning of all
2288 * possible data to return.
2289 * length: If inout==0 max number of bytes to be written into the buffer
2290 * else number of bytes in "buffer"
2292 * < 0: error. errno value.
2293 * >= 0: sizeof data returned.
2294 *************************************************************************/
2296 qla2x00_proc_info(struct Scsi_Host
*shost
, char *buffer
,
2297 char **start
, off_t offset
, int length
, int inout
)
2299 struct info_str info
;
2300 int retval
= -EINVAL
;
2306 uint8_t *loop_state
;
2307 scsi_qla_host_t
*ha
;
2310 DEBUG3(printk(KERN_INFO
2311 "Entering proc_info buff_in=%p, offset=0x%lx, length=0x%x\n",
2312 buffer
, offset
, length
);)
2314 ha
= (scsi_qla_host_t
*) shost
->hostdata
;
2317 /* Has data been written to the file? */
2319 "%s: has data been written to the file. \n",
2329 info
.buffer
= buffer
;
2330 info
.length
= length
;
2331 info
.offset
= offset
;
2334 /* start building the print buffer */
2336 "QLogic PCI to Fibre Channel Host Adapter for %s:\n"
2337 " Firmware version %s, ",
2338 ha
->model_number
, qla2x00_get_fw_version_str(ha
, fw_info
));
2340 copy_info(&info
, "Driver version %s\n", qla2x00_version_str
);
2342 tmp_sn
= ((ha
->serial0
& 0x1f) << 16) | (ha
->serial2
<< 8) |
2344 copy_info(&info
, "ISP: %s, Serial# %c%05d\n",
2345 ha
->brd_info
->isp_name
, ('A' + tmp_sn
/100000), (tmp_sn
%100000));
2348 "Request Queue = 0x%llx, Response Queue = 0x%llx\n",
2349 (unsigned long long)ha
->request_dma
,
2350 (unsigned long long)ha
->response_dma
);
2353 "Request Queue count = %d, Response Queue count = %d\n",
2354 ha
->request_q_length
, ha
->response_q_length
);
2357 "Total number of active commands = %ld\n",
2361 "Total number of interrupts = %ld\n",
2362 (long)ha
->total_isr_cnt
);
2365 " Device queue depth = 0x%x\n",
2366 (ql2xmaxqdepth
== 0) ? 16 : ql2xmaxqdepth
);
2369 "Number of free request entries = %d\n", ha
->req_q_cnt
);
2372 "Number of mailbox timeouts = %ld\n", ha
->total_mbx_timeout
);
2375 "Number of ISP aborts = %ld\n", ha
->total_isp_aborts
);
2378 "Number of loop resyncs = %ld\n", ha
->total_loop_resync
);
2381 "Number of retries for empty slots = %ld\n",
2382 qla2x00_stats
.outarray_full
);
2385 "Number of reqs in pending_q= %ld, retry_q= %d, "
2386 "done_q= %ld, scsi_retry_q= %d\n",
2387 ha
->qthreads
, ha
->retry_q_cnt
,
2388 ha
->done_q_cnt
, ha
->scsi_retry_q_cnt
);
2391 flags
= (uint32_t *) &ha
->flags
;
2393 if (atomic_read(&ha
->loop_state
) == LOOP_DOWN
) {
2394 loop_state
= "DOWN";
2395 } else if (atomic_read(&ha
->loop_state
) == LOOP_UP
) {
2397 } else if (atomic_read(&ha
->loop_state
) == LOOP_READY
) {
2398 loop_state
= "READY";
2399 } else if (atomic_read(&ha
->loop_state
) == LOOP_TIMEOUT
) {
2400 loop_state
= "TIMEOUT";
2401 } else if (atomic_read(&ha
->loop_state
) == LOOP_UPDATE
) {
2402 loop_state
= "UPDATE";
2404 loop_state
= "UNKNOWN";
2408 "Host adapter:loop state = <%s>, flags = 0x%lx\n",
2409 loop_state
, *flags
);
2411 copy_info(&info
, "Dpc flags = 0x%lx\n", ha
->dpc_flags
);
2413 copy_info(&info
, "MBX flags = 0x%x\n", ha
->mbx_flags
);
2415 copy_info(&info
, "Link down Timeout = %3.3d\n",
2416 ha
->link_down_timeout
);
2418 copy_info(&info
, "Port down retry = %3.3d\n",
2419 ha
->port_down_retry_count
);
2421 copy_info(&info
, "Login retry count = %3.3d\n",
2422 ha
->login_retry_count
);
2425 "Commands retried with dropped frame(s) = %d\n",
2426 ha
->dropped_frame_error_cnt
);
2429 "Product ID = %04x %04x %04x %04x\n", ha
->product_id
[0],
2430 ha
->product_id
[1], ha
->product_id
[2], ha
->product_id
[3]);
2432 copy_info(&info
, "\n");
2434 /* 2.25 node/port display to proc */
2435 /* Display the node name for adapter */
2436 copy_info(&info
, "\nSCSI Device Information:\n");
2438 "scsi-qla%d-adapter-node="
2439 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
2441 ha
->init_cb
->node_name
[0],
2442 ha
->init_cb
->node_name
[1],
2443 ha
->init_cb
->node_name
[2],
2444 ha
->init_cb
->node_name
[3],
2445 ha
->init_cb
->node_name
[4],
2446 ha
->init_cb
->node_name
[5],
2447 ha
->init_cb
->node_name
[6],
2448 ha
->init_cb
->node_name
[7]);
2450 /* display the port name for adapter */
2452 "scsi-qla%d-adapter-port="
2453 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
2455 ha
->init_cb
->port_name
[0],
2456 ha
->init_cb
->port_name
[1],
2457 ha
->init_cb
->port_name
[2],
2458 ha
->init_cb
->port_name
[3],
2459 ha
->init_cb
->port_name
[4],
2460 ha
->init_cb
->port_name
[5],
2461 ha
->init_cb
->port_name
[6],
2462 ha
->init_cb
->port_name
[7]);
2464 /* Print out device port names */
2465 for (t
= 0; t
< MAX_FIBRE_DEVICES
; t
++) {
2466 if ((tq
= TGT_Q(ha
, t
)) == NULL
)
2470 "scsi-qla%d-target-%d="
2471 "%02x%02x%02x%02x%02x%02x%02x%02x;\n",
2472 (int)ha
->instance
, t
,
2473 tq
->port_name
[0], tq
->port_name
[1],
2474 tq
->port_name
[2], tq
->port_name
[3],
2475 tq
->port_name
[4], tq
->port_name
[5],
2476 tq
->port_name
[6], tq
->port_name
[7]);
2479 copy_info(&info
, "\nSCSI LUN Information:\n");
2481 "(Id:Lun) * - indicates lun is not registered with the OS.\n");
2483 /* scan for all equipment stats */
2484 for (t
= 0; t
< MAX_FIBRE_DEVICES
; t
++) {
2486 for (l
= 0; l
< ha
->max_luns
; l
++) {
2487 up
= (os_lun_t
*) GET_LU_Q(ha
, t
, l
);
2492 if (up
->fclun
== NULL
) {
2497 "(%2d:%2d): Total reqs %ld,",
2501 " Pending reqs %ld,",
2504 if (up
->io_cnt
< 4) {
2515 " %ld:%d:%02x %02x",
2516 up
->fclun
->fcport
->ha
->instance
,
2517 up
->fclun
->fcport
->cur_path
,
2518 up
->fclun
->fcport
->loop_id
,
2519 up
->fclun
->device_type
);
2521 copy_info(&info
, "\n");
2523 if (info
.pos
>= info
.offset
+ info
.length
) {
2524 /* No need to continue */
2529 if (info
.pos
>= info
.offset
+ info
.length
) {
2530 /* No need to continue */
2537 retval
= info
.pos
> info
.offset
? info
.pos
- info
.offset
: 0;
2539 DEBUG3(printk(KERN_INFO
2540 "Exiting proc_info: info.pos=%d, offset=0x%lx, "
2541 "length=0x%x\n", info
.pos
, offset
, length
);)
2547 * qla2x00_display_fc_names
2548 * This routine will the node names of the different devices found
2549 * after port inquiry.
2552 * cmd = SCSI command structure
2558 qla2x00_display_fc_names(scsi_qla_host_t
*ha
)
2563 /* Display the node name for adapter */
2564 qla_printk(KERN_INFO
, ha
,
2565 "scsi-qla%d-adapter-node=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
2567 ha
->init_cb
->node_name
[0],
2568 ha
->init_cb
->node_name
[1],
2569 ha
->init_cb
->node_name
[2],
2570 ha
->init_cb
->node_name
[3],
2571 ha
->init_cb
->node_name
[4],
2572 ha
->init_cb
->node_name
[5],
2573 ha
->init_cb
->node_name
[6],
2574 ha
->init_cb
->node_name
[7]);
2576 /* display the port name for adapter */
2577 qla_printk(KERN_INFO
, ha
,
2578 "scsi-qla%d-adapter-port=%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
2580 ha
->init_cb
->port_name
[0],
2581 ha
->init_cb
->port_name
[1],
2582 ha
->init_cb
->port_name
[2],
2583 ha
->init_cb
->port_name
[3],
2584 ha
->init_cb
->port_name
[4],
2585 ha
->init_cb
->port_name
[5],
2586 ha
->init_cb
->port_name
[6],
2587 ha
->init_cb
->port_name
[7]);
2589 /* Print out device port names */
2590 for (tgt
= 0; tgt
< MAX_TARGETS
; tgt
++) {
2591 if ((tq
= ha
->otgt
[tgt
]) == NULL
)
2594 if (tq
->fcport
== NULL
)
2597 switch (ha
->binding_type
) {
2598 case BIND_BY_PORT_NAME
:
2599 qla_printk(KERN_INFO
, ha
,
2600 "scsi-qla%d-tgt-%d-di-0-port="
2601 "%02x%02x%02x%02x%02x%02x%02x%02x\\;\n",
2615 case BIND_BY_PORT_ID
:
2616 qla_printk(KERN_INFO
, ha
,
2617 "scsi-qla%d-tgt-%d-di-0-pid="
2618 "%02x%02x%02x\\;\n",
2628 qla_printk(KERN_INFO
, ha
,
2629 "scsi-qla%d-target-%d-vsa=01;\n", (int)ha
->instance
, tgt
);
2635 * qla2x00_suspend_lun
2636 * Suspend lun and start port down timer
2639 * ha = visable adapter block pointer.
2641 * cp = Scsi command pointer
2642 * time = time in seconds
2643 * count = number of times to let time expire
2644 * delay_lun = non-zero, if lun should be delayed rather than suspended
2647 * QLA_SUCCESS -- suspended lun
2648 * QLA_FUNCTION_FAILED -- Didn't suspend lun
2651 * Interrupt context.
2654 __qla2x00_suspend_lun(scsi_qla_host_t
*ha
,
2655 os_lun_t
*lq
, int time
, int count
, int delay_lun
)
2659 struct list_head
*list
, *temp
;
2660 unsigned long flags
;
2664 /* if the lun_q is already suspended then don't do it again */
2665 if (lq
->q_state
== LUN_STATE_READY
||lq
->q_state
== LUN_STATE_RUN
) {
2667 spin_lock_irqsave(&lq
->q_lock
, flags
);
2668 if (lq
->q_state
== LUN_STATE_READY
) {
2672 /* Set the suspend time usually 6 secs */
2673 atomic_set(&lq
->q_timer
, time
);
2675 /* now suspend the lun */
2676 lq
->q_state
= LUN_STATE_WAIT
;
2679 set_bit(LUN_EXEC_DELAYED
, &lq
->q_flag
);
2680 DEBUG(printk(KERN_INFO
2681 "scsi(%ld): Delay lun execution for %d secs, "
2682 "count=%d, max count=%d, state=%d\n",
2685 lq
->q_count
, lq
->q_max
, lq
->q_state
));
2687 DEBUG(printk(KERN_INFO
2688 "scsi(%ld): Suspend lun for %d secs, count=%d, "
2689 "max count=%d, state=%d\n",
2692 lq
->q_count
, lq
->q_max
, lq
->q_state
));
2694 spin_unlock_irqrestore(&lq
->q_lock
, flags
);
2697 * Remove all pending commands from request queue and put them
2698 * in the scsi_retry queue.
2700 spin_lock_irqsave(&ha
->list_lock
, flags
);
2701 list_for_each_safe(list
, temp
, &ha
->pending_queue
) {
2702 sp
= list_entry(list
, srb_t
, list
);
2703 if (sp
->lun_queue
!= lq
)
2706 __del_from_pending_queue(ha
, sp
);
2708 if (sp
->cmd
->allowed
< count
)
2709 sp
->cmd
->allowed
= count
;
2710 __add_to_scsi_retry_queue(ha
, sp
);
2712 } /* list_for_each_safe */
2713 spin_unlock_irqrestore(&ha
->list_lock
, flags
);
2716 rval
= QLA_FUNCTION_FAILED
;
2723 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
2725 * Input: ha = adapter block pointer. fcport = port structure pointer.
2731 void qla2x00_mark_device_lost(scsi_qla_host_t
*ha
, fc_port_t
*fcport
,
2735 * We may need to retry the login, so don't change the state of the
2736 * port but do the retries.
2738 if (atomic_read(&fcport
->state
) != FCS_DEVICE_DEAD
)
2739 atomic_set(&fcport
->state
, FCS_DEVICE_LOST
);
2744 if (fcport
->login_retry
== 0) {
2745 fcport
->login_retry
= ha
->login_retry_count
;
2746 set_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
);
2748 DEBUG(printk("scsi(%ld): Port login retry: "
2749 "%02x%02x%02x%02x%02x%02x%02x%02x, "
2750 "id = 0x%04x retry cnt=%d\n",
2752 fcport
->port_name
[0],
2753 fcport
->port_name
[1],
2754 fcport
->port_name
[2],
2755 fcport
->port_name
[3],
2756 fcport
->port_name
[4],
2757 fcport
->port_name
[5],
2758 fcport
->port_name
[6],
2759 fcport
->port_name
[7],
2761 fcport
->login_retry
));
2766 * qla2x00_mark_all_devices_lost
2767 * Updates fcport state when device goes offline.
2770 * ha = adapter block pointer.
2771 * fcport = port structure pointer.
2779 qla2x00_mark_all_devices_lost(scsi_qla_host_t
*ha
)
2783 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
2784 if (fcport
->port_type
!= FCT_TARGET
)
2788 * No point in marking the device as lost, if the device is
2791 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
)
2794 atomic_set(&fcport
->state
, FCS_DEVICE_LOST
);
2800 * Allocates adapter memory.
2807 qla2x00_mem_alloc(scsi_qla_host_t
*ha
)
2815 * This will loop only once if everything goes well, else some
2816 * number of retries will be performed to get around a kernel
2817 * bug where available mem is not allocated until after a
2818 * little delay and a retry.
2820 ha
->request_ring
= dma_alloc_coherent(&ha
->pdev
->dev
,
2821 (ha
->request_q_length
+ 1) * sizeof(request_t
),
2822 &ha
->request_dma
, GFP_KERNEL
);
2823 if (ha
->request_ring
== NULL
) {
2824 qla_printk(KERN_WARNING
, ha
,
2825 "Memory Allocation failed - request_ring\n");
2827 qla2x00_mem_free(ha
);
2833 ha
->response_ring
= dma_alloc_coherent(&ha
->pdev
->dev
,
2834 (ha
->response_q_length
+ 1) * sizeof(response_t
),
2835 &ha
->response_dma
, GFP_KERNEL
);
2836 if (ha
->response_ring
== NULL
) {
2837 qla_printk(KERN_WARNING
, ha
,
2838 "Memory Allocation failed - response_ring\n");
2840 qla2x00_mem_free(ha
);
2846 ha
->gid_list
= dma_alloc_coherent(&ha
->pdev
->dev
, GID_LIST_SIZE
,
2847 &ha
->gid_list_dma
, GFP_KERNEL
);
2848 if (ha
->gid_list
== NULL
) {
2849 qla_printk(KERN_WARNING
, ha
,
2850 "Memory Allocation failed - gid_list\n");
2852 qla2x00_mem_free(ha
);
2858 ha
->rlc_rsp
= dma_alloc_coherent(&ha
->pdev
->dev
,
2859 sizeof(rpt_lun_cmd_rsp_t
), &ha
->rlc_rsp_dma
, GFP_KERNEL
);
2860 if (ha
->rlc_rsp
== NULL
) {
2861 qla_printk(KERN_WARNING
, ha
,
2862 "Memory Allocation failed - rlc");
2864 qla2x00_mem_free(ha
);
2870 snprintf(name
, sizeof(name
), "qla2xxx_%ld", ha
->host_no
);
2871 ha
->s_dma_pool
= dma_pool_create(name
, &ha
->pdev
->dev
,
2872 DMA_POOL_SIZE
, 8, 0);
2873 if (ha
->s_dma_pool
== NULL
) {
2874 qla_printk(KERN_WARNING
, ha
,
2875 "Memory Allocation failed - s_dma_pool\n");
2877 qla2x00_mem_free(ha
);
2883 /* get consistent memory allocated for init control block */
2884 ha
->init_cb
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
2886 if (ha
->init_cb
== NULL
) {
2887 qla_printk(KERN_WARNING
, ha
,
2888 "Memory Allocation failed - init_cb\n");
2890 qla2x00_mem_free(ha
);
2895 memset(ha
->init_cb
, 0, sizeof(init_cb_t
));
2897 /* Get consistent memory allocated for Get Port Database cmd */
2898 ha
->iodesc_pd
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
2899 &ha
->iodesc_pd_dma
);
2900 if (ha
->iodesc_pd
== NULL
) {
2902 qla_printk(KERN_WARNING
, ha
,
2903 "Memory Allocation failed - iodesc_pd\n");
2905 qla2x00_mem_free(ha
);
2910 memset(ha
->iodesc_pd
, 0, PORT_DATABASE_SIZE
);
2912 /* Allocate ioctl related memory. */
2913 if (qla2x00_alloc_ioctl_mem(ha
)) {
2914 qla_printk(KERN_WARNING
, ha
,
2915 "Memory Allocation failed - ioctl_mem\n");
2917 qla2x00_mem_free(ha
);
2923 if (qla2x00_allocate_sp_pool(ha
)) {
2924 qla_printk(KERN_WARNING
, ha
,
2925 "Memory Allocation failed - "
2926 "qla2x00_allocate_sp_pool()\n");
2928 qla2x00_mem_free(ha
);
2934 /* Allocate memory for SNS commands */
2935 if (IS_QLA2100(ha
) || IS_QLA2200(ha
)) {
2936 /* Get consistent memory allocated for SNS commands */
2937 ha
->sns_cmd
= dma_alloc_coherent(&ha
->pdev
->dev
,
2938 sizeof(struct sns_cmd_pkt
), &ha
->sns_cmd_dma
,
2940 if (ha
->sns_cmd
== NULL
) {
2942 qla_printk(KERN_WARNING
, ha
,
2943 "Memory Allocation failed - sns_cmd\n");
2945 qla2x00_mem_free(ha
);
2950 memset(ha
->sns_cmd
, 0, sizeof(struct sns_cmd_pkt
));
2952 /* Get consistent memory allocated for MS IOCB */
2953 ha
->ms_iocb
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
2955 if (ha
->ms_iocb
== NULL
) {
2957 qla_printk(KERN_WARNING
, ha
,
2958 "Memory Allocation failed - ms_iocb\n");
2960 qla2x00_mem_free(ha
);
2965 memset(ha
->ms_iocb
, 0, sizeof(ms_iocb_entry_t
));
2968 * Get consistent memory allocated for CT SNS
2971 ha
->ct_sns
= dma_alloc_coherent(&ha
->pdev
->dev
,
2972 sizeof(struct ct_sns_pkt
), &ha
->ct_sns_dma
,
2974 if (ha
->ct_sns
== NULL
) {
2976 qla_printk(KERN_WARNING
, ha
,
2977 "Memory Allocation failed - ct_sns\n");
2979 qla2x00_mem_free(ha
);
2984 memset(ha
->ct_sns
, 0, sizeof(struct ct_sns_pkt
));
2987 /* Done all allocations without any error. */
2990 } while (retry
-- && status
!= 0);
2994 "%s(): **** FAILED ****\n", __func__
);
3002 * Frees all adapter allocated memory.
3005 * ha = adapter block pointer.
3008 qla2x00_mem_free(scsi_qla_host_t
*ha
)
3011 struct list_head
*fcpl
, *fcptemp
;
3013 struct list_head
*fcll
, *fcltemp
;
3015 unsigned long wtime
;/* max wait time if mbx cmd is busy. */
3019 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__
));
3023 /* Free the target queues */
3024 for (t
= 0; t
< MAX_TARGETS
; t
++) {
3025 qla2x00_tgt_free(ha
, t
);
3028 /* Make sure all other threads are stopped. */
3030 while (ha
->dpc_wait
&& wtime
) {
3031 set_current_state(TASK_INTERRUPTIBLE
);
3032 wtime
= schedule_timeout(wtime
);
3035 /* free ioctl memory */
3036 qla2x00_free_ioctl_mem(ha
);
3039 qla2x00_free_sp_pool(ha
);
3042 dma_free_coherent(&ha
->pdev
->dev
, sizeof(struct sns_cmd_pkt
),
3043 ha
->sns_cmd
, ha
->sns_cmd_dma
);
3046 dma_free_coherent(&ha
->pdev
->dev
, sizeof(struct ct_sns_pkt
),
3047 ha
->ct_sns
, ha
->ct_sns_dma
);
3050 dma_pool_free(ha
->s_dma_pool
, ha
->ms_iocb
, ha
->ms_iocb_dma
);
3053 dma_pool_free(ha
->s_dma_pool
, ha
->iodesc_pd
, ha
->iodesc_pd_dma
);
3056 dma_pool_free(ha
->s_dma_pool
, ha
->init_cb
, ha
->init_cb_dma
);
3059 dma_pool_destroy(ha
->s_dma_pool
);
3062 dma_free_coherent(&ha
->pdev
->dev
,
3063 sizeof(rpt_lun_cmd_rsp_t
), ha
->rlc_rsp
,
3067 dma_free_coherent(&ha
->pdev
->dev
, GID_LIST_SIZE
, ha
->gid_list
,
3070 if (ha
->response_ring
)
3071 dma_free_coherent(&ha
->pdev
->dev
,
3072 (ha
->response_q_length
+ 1) * sizeof(response_t
),
3073 ha
->response_ring
, ha
->response_dma
);
3075 if (ha
->request_ring
)
3076 dma_free_coherent(&ha
->pdev
->dev
,
3077 (ha
->request_q_length
+ 1) * sizeof(request_t
),
3078 ha
->request_ring
, ha
->request_dma
);
3081 ha
->sns_cmd_dma
= 0;
3085 ha
->ms_iocb_dma
= 0;
3086 ha
->iodesc_pd
= NULL
;
3087 ha
->iodesc_pd_dma
= 0;
3089 ha
->init_cb_dma
= 0;
3091 ha
->s_dma_pool
= NULL
;
3094 ha
->rlc_rsp_dma
= 0;
3095 ha
->gid_list
= NULL
;
3096 ha
->gid_list_dma
= 0;
3098 ha
->response_ring
= NULL
;
3099 ha
->response_dma
= 0;
3100 ha
->request_ring
= NULL
;
3101 ha
->request_dma
= 0;
3103 list_for_each_safe(fcpl
, fcptemp
, &ha
->fcports
) {
3104 fcport
= list_entry(fcpl
, fc_port_t
, list
);
3107 list_for_each_safe(fcll
, fcltemp
, &fcport
->fcluns
) {
3108 fclun
= list_entry(fcll
, fc_lun_t
, list
);
3110 list_del_init(&fclun
->list
);
3115 list_del_init(&fcport
->list
);
3118 INIT_LIST_HEAD(&ha
->fcports
);
3121 free_pages((unsigned long)ha
->fw_dump
, ha
->fw_dump_order
);
3123 if (ha
->fw_dump_buffer
)
3124 vfree(ha
->fw_dump_buffer
);
3127 ha
->fw_dump_reading
= 0;
3128 ha
->fw_dump_buffer
= NULL
;
3132 * qla2x00_allocate_sp_pool
3133 * This routine is called during initialization to allocate
3134 * memory for local srb_t.
3137 * ha = adapter block pointer.
3142 * Note: Sets the ref_count for non Null sp to one.
3145 qla2x00_allocate_sp_pool(scsi_qla_host_t
*ha
)
3150 ha
->srb_mempool
= mempool_create(SRB_MIN_REQ
, mempool_alloc_slab
,
3151 mempool_free_slab
, srb_cachep
);
3152 if (ha
->srb_mempool
== NULL
) {
3153 qla_printk(KERN_INFO
, ha
, "Unable to allocate SRB mempool.\n");
3154 rval
= QLA_FUNCTION_FAILED
;
3160 * This routine frees all adapter allocated memory.
3164 qla2x00_free_sp_pool( scsi_qla_host_t
*ha
)
3166 if (ha
->srb_mempool
) {
3167 mempool_destroy(ha
->srb_mempool
);
3168 ha
->srb_mempool
= NULL
;
3172 /**************************************************************************
3174 * This kernel thread is a task that is schedule by the interrupt handler
3175 * to perform the background processing for interrupts.
3178 * This task always run in the context of a kernel thread. It
3179 * is kick-off by the driver's detect code and starts up
3180 * up one per adapter. It immediately goes to sleep and waits for
3181 * some fibre event. When either the interrupt handler or
3182 * the timer routine detects a event it will one of the task
3183 * bits then wake us up.
3184 **************************************************************************/
3186 qla2x00_do_dpc(void *data
)
3188 DECLARE_MUTEX_LOCKED(sem
);
3189 scsi_qla_host_t
*ha
;
3194 unsigned long flags
= 0;
3195 struct list_head
*list
, *templist
;
3196 int dead_cnt
, online_cnt
;
3198 uint16_t next_loopid
;
3202 ha
= (scsi_qla_host_t
*)data
;
3206 daemonize("%s_dpc", ha
->host_str
);
3207 allow_signal(SIGHUP
);
3209 ha
->dpc_wait
= &sem
;
3211 set_user_nice(current
, -20);
3215 complete(&ha
->dpc_inited
);
3218 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
3220 if (down_interruptible(&sem
))
3223 if (ha
->dpc_should_die
)
3226 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
3228 /* Initialization not yet finished. Don't do anything yet. */
3229 if (!ha
->flags
.init_done
|| ha
->dpc_active
)
3232 DEBUG3(printk("scsi(%ld): DPC handler\n", ha
->host_no
));
3236 if (!list_empty(&ha
->done_queue
))
3239 /* Process commands in retry queue */
3240 if (test_and_clear_bit(PORT_RESTART_NEEDED
, &ha
->dpc_flags
)) {
3241 DEBUG(printk("scsi(%ld): DPC checking retry_q. "
3243 ha
->host_no
, ha
->retry_q_cnt
));
3245 spin_lock_irqsave(&ha
->list_lock
, flags
);
3246 dead_cnt
= online_cnt
= 0;
3247 list_for_each_safe(list
, templist
, &ha
->retry_queue
) {
3248 sp
= list_entry(list
, srb_t
, list
);
3250 DEBUG3(printk("scsi(%ld): pid=%ld sp=%p, "
3251 "spflags=0x%x, q_flag= 0x%lx\n",
3252 ha
->host_no
, sp
->cmd
->serial_number
, sp
,
3253 sp
->flags
, q
->q_flag
));
3257 fcport
= q
->fclun
->fcport
;
3259 if (atomic_read(&fcport
->state
) ==
3261 atomic_read(&fcport
->ha
->loop_state
) == LOOP_DEAD
) {
3263 __del_from_retry_queue(ha
, sp
);
3264 sp
->cmd
->result
= DID_NO_CONNECT
<< 16;
3265 if (atomic_read(&fcport
->ha
->loop_state
) ==
3267 sp
->err_id
= SRB_ERR_LOOP
;
3269 sp
->err_id
= SRB_ERR_PORT
;
3270 sp
->cmd
->host_scribble
=
3271 (unsigned char *) NULL
;
3272 __add_to_done_queue(ha
, sp
);
3274 } else if (atomic_read(&fcport
->state
) !=
3277 __del_from_retry_queue(ha
, sp
);
3278 sp
->cmd
->result
= DID_BUS_BUSY
<< 16;
3279 sp
->cmd
->host_scribble
=
3280 (unsigned char *) NULL
;
3281 __add_to_done_queue(ha
, sp
);
3284 } /* list_for_each_safe() */
3285 spin_unlock_irqrestore(&ha
->list_lock
, flags
);
3287 DEBUG(printk("scsi(%ld): done processing retry queue "
3288 "- dead=%d, online=%d\n ",
3289 ha
->host_no
, dead_cnt
, online_cnt
));
3292 /* Process commands in scsi retry queue */
3293 if (test_and_clear_bit(SCSI_RESTART_NEEDED
, &ha
->dpc_flags
)) {
3295 * Any requests we want to delay for some period is put
3296 * in the scsi retry queue with a delay added. The
3297 * timer will schedule a "scsi_restart_needed" every
3298 * second as long as there are requests in the scsi
3301 DEBUG(printk("scsi(%ld): DPC checking scsi "
3302 "retry_q.total=%d\n",
3303 ha
->host_no
, ha
->scsi_retry_q_cnt
));
3306 spin_lock_irqsave(&ha
->list_lock
, flags
);
3307 list_for_each_safe(list
, templist
,
3308 &ha
->scsi_retry_queue
) {
3310 sp
= list_entry(list
, srb_t
, list
);
3314 DEBUG3(printk("scsi(%ld): scsi_retry_q: "
3315 "pid=%ld sp=%p, spflags=0x%x, "
3316 "q_flag= 0x%lx,q_state=%d\n",
3317 ha
->host_no
, sp
->cmd
->serial_number
,
3318 sp
, sp
->flags
, q
->q_flag
, q
->q_state
));
3320 /* Was this lun suspended */
3321 if (q
->q_state
!= LUN_STATE_WAIT
) {
3323 __del_from_scsi_retry_queue(ha
, sp
);
3325 if (test_bit(TQF_RETRY_CMDS
,
3327 qla2x00_extend_timeout(sp
->cmd
,
3328 (sp
->cmd
->timeout_per_command
/ HZ
) - QLA_CMD_TIMER_DELTA
);
3329 __add_to_pending_queue(ha
, sp
);
3332 __add_to_retry_queue(ha
, sp
);
3335 /* Was this command suspended for N secs */
3336 if (sp
->delay
!= 0) {
3338 if (sp
->delay
== 0) {
3340 __del_from_scsi_retry_queue(
3342 __add_to_retry_queue(ha
,sp
);
3346 spin_unlock_irqrestore(&ha
->list_lock
, flags
);
3348 /* Clear all Target Unsuspended bits */
3349 for (t
= 0; t
< ha
->max_targets
; t
++) {
3350 if ((tq
= ha
->otgt
[t
]) == NULL
)
3353 if (test_bit(TQF_RETRY_CMDS
, &tq
->flags
))
3354 clear_bit(TQF_RETRY_CMDS
, &tq
->flags
);
3359 DEBUG(if (online_cnt
> 0))
3360 DEBUG(printk("scsi(%ld): dpc() found scsi reqs to "
3362 ha
->host_no
, online_cnt
));
3365 if (ha
->flags
.mbox_busy
) {
3366 if (!list_empty(&ha
->done_queue
))
3373 if (test_and_clear_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
)) {
3375 DEBUG(printk("scsi(%ld): dpc: sched "
3376 "qla2x00_abort_isp ha = %p\n",
3378 if (!(test_and_set_bit(ABORT_ISP_ACTIVE
,
3381 if (qla2x00_abort_isp(ha
)) {
3382 /* failed. retry later */
3383 set_bit(ISP_ABORT_NEEDED
,
3386 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
3388 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
3392 if (test_and_clear_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
) &&
3393 (!(test_and_set_bit(RESET_ACTIVE
, &ha
->dpc_flags
)))) {
3395 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
3398 qla2x00_rst_aen(ha
);
3399 clear_bit(RESET_ACTIVE
, &ha
->dpc_flags
);
3402 /* Retry each device up to login retry count */
3403 if ((test_and_clear_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
)) &&
3404 !test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
) &&
3405 atomic_read(&ha
->loop_state
) != LOOP_DOWN
) {
3407 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
3411 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
3412 if (fcport
->port_type
!= FCT_TARGET
)
3416 * If the port is not ONLINE then try to login
3417 * to it if we haven't run out of retries.
3419 if (atomic_read(&fcport
->state
) != FCS_ONLINE
&&
3420 fcport
->login_retry
) {
3422 fcport
->login_retry
--;
3423 if (fcport
->flags
& FCF_FABRIC_DEVICE
) {
3426 qla2x00_fabric_logout(
3429 status
= qla2x00_fabric_login(
3430 ha
, fcport
, &next_loopid
);
3433 qla2x00_local_device_login(
3434 ha
, fcport
->loop_id
);
3436 if (status
== QLA_SUCCESS
) {
3437 fcport
->old_loop_id
= fcport
->loop_id
;
3439 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
3440 ha
->host_no
, fcport
->loop_id
));
3442 fcport
->port_login_retry_count
=
3443 ha
->port_down_retry_count
* PORT_RETRY_TIME
;
3444 atomic_set(&fcport
->state
, FCS_ONLINE
);
3445 atomic_set(&fcport
->port_down_timer
,
3446 ha
->port_down_retry_count
* PORT_RETRY_TIME
);
3448 fcport
->login_retry
= 0;
3449 } else if (status
== 1) {
3450 set_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
);
3451 /* retry the login again */
3452 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
3454 fcport
->login_retry
, fcport
->loop_id
));
3456 fcport
->login_retry
= 0;
3459 if (test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
))
3462 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
3466 if ((test_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
)) &&
3467 atomic_read(&ha
->loop_state
) != LOOP_DOWN
) {
3469 clear_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
);
3470 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
3473 set_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
);
3475 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
3479 if (test_and_clear_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
)) {
3481 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
3484 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE
,
3487 qla2x00_loop_resync(ha
);
3489 clear_bit(LOOP_RESYNC_ACTIVE
, &ha
->dpc_flags
);
3492 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
3497 if (test_bit(RESTART_QUEUES_NEEDED
, &ha
->dpc_flags
)) {
3498 DEBUG(printk("scsi(%ld): qla2x00_restart_queues()\n",
3501 qla2x00_restart_queues(ha
, 0);
3503 DEBUG(printk("scsi(%ld): qla2x00_restart_queues - end\n",
3507 if (test_bit(ABORT_QUEUES_NEEDED
, &ha
->dpc_flags
)) {
3509 DEBUG(printk("scsi(%ld): qla2x00_abort_queues()\n",
3512 qla2x00_abort_queues(ha
, 0);
3514 DEBUG(printk("scsi(%ld): qla2x00_abort_queues - end\n",
3518 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED
, &ha
->dpc_flags
)) {
3520 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
3523 qla2x00_rescan_fcports(ha
);
3525 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
3531 if (!ha
->interrupts_on
)
3532 qla2x00_enable_intrs(ha
);
3534 if (!list_empty(&ha
->done_queue
))
3538 } /* End of while(1) */
3540 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha
->host_no
));
3543 * Make sure that nobody tries to wake us up again.
3545 ha
->dpc_wait
= NULL
;
3548 complete_and_exit(&ha
->dpc_exited
, 0);
3552 * qla2x00_abort_queues
3553 * Abort all commands on queues on device
3556 * ha = adapter block pointer.
3559 * Interrupt context.
3562 qla2x00_abort_queues(scsi_qla_host_t
*ha
, uint8_t doneqflg
)
3566 struct list_head
*list
, *temp
;
3567 unsigned long flags
;
3569 clear_bit(ABORT_QUEUES_NEEDED
, &ha
->dpc_flags
);
3571 /* Return all commands device queues. */
3572 spin_lock_irqsave(&ha
->list_lock
,flags
);
3573 list_for_each_safe(list
, temp
, &ha
->pending_queue
) {
3574 sp
= list_entry(list
, srb_t
, list
);
3576 if (sp
->flags
& SRB_ABORTED
)
3579 /* Remove srb from LUN queue. */
3580 __del_from_pending_queue(ha
, sp
);
3582 /* Set ending status. */
3583 sp
->cmd
->result
= DID_BUS_BUSY
<< 16;
3585 __add_to_done_queue(ha
, sp
);
3587 spin_unlock_irqrestore(&ha
->list_lock
, flags
);
3592 * Processes asynchronous reset.
3595 * ha = adapter block pointer.
3598 qla2x00_rst_aen(scsi_qla_host_t
*ha
)
3600 if (ha
->flags
.online
&& !ha
->flags
.reset_active
&&
3601 !atomic_read(&ha
->loop_down_timer
) &&
3602 !(test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
))) {
3604 clear_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
);
3607 * Issue marker command only when we are going to start
3610 ha
->marker_needed
= 1;
3611 } while (!atomic_read(&ha
->loop_down_timer
) &&
3612 (test_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
)));
3618 * This routine will allocate SP from the free queue
3625 qla2x00_get_new_sp(scsi_qla_host_t
*ha
)
3629 sp
= mempool_alloc(ha
->srb_mempool
, GFP_ATOMIC
);
3631 atomic_set(&sp
->ref_count
, 1);
3635 /**************************************************************************
3641 * Context: Interrupt
3642 ***************************************************************************/
3644 qla2x00_timer(scsi_qla_host_t
*ha
)
3647 unsigned long cpu_flags
= 0;
3656 * We try and restart any request in the retry queue every second.
3658 if (!list_empty(&ha
->retry_queue
)) {
3659 set_bit(PORT_RESTART_NEEDED
, &ha
->dpc_flags
);
3664 * We try and restart any request in the scsi_retry queue every second.
3666 if (!list_empty(&ha
->scsi_retry_queue
)) {
3667 set_bit(SCSI_RESTART_NEEDED
, &ha
->dpc_flags
);
3672 * Ports - Port down timer.
3674 * Whenever, a port is in the LOST state we start decrementing its port
3675 * down timer every second until it reaches zero. Once it reaches zero
3676 * the port it marked DEAD.
3679 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
3680 if (fcport
->port_type
!= FCT_TARGET
)
3683 if (atomic_read(&fcport
->state
) == FCS_DEVICE_LOST
) {
3685 if (atomic_read(&fcport
->port_down_timer
) == 0)
3688 if (atomic_dec_and_test(&fcport
->port_down_timer
) != 0)
3689 atomic_set(&fcport
->state
, FCS_DEVICE_DEAD
);
3691 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
3694 t
, atomic_read(&fcport
->port_down_timer
)));
3697 } /* End of for fcport */
3700 * LUNS - lun suspend timer.
3702 * Whenever, a lun is suspended the timer starts decrementing its
3703 * suspend timer every second until it reaches zero. Once it reaches
3704 * zero the lun retry count is decremented.
3708 * FIXME(dg) - Need to convert this linear search of luns into a search
3709 * of a list of suspended luns.
3711 for (t
= 0; t
< ha
->max_targets
; t
++) {
3712 if ((tq
= ha
->otgt
[t
]) == NULL
)
3715 for (l
= 0; l
< ha
->max_luns
; l
++) {
3716 if ((lq
= (os_lun_t
*) tq
->olun
[l
]) == NULL
)
3719 spin_lock_irqsave(&lq
->q_lock
, cpu_flags
);
3720 if (lq
->q_state
== LUN_STATE_WAIT
&&
3721 atomic_read(&lq
->q_timer
) != 0) {
3723 if (atomic_dec_and_test(&lq
->q_timer
) != 0) {
3725 * A delay should immediately
3726 * transition to a READY state
3728 if (test_and_clear_bit(LUN_EXEC_DELAYED
,
3730 lq
->q_state
= LUN_STATE_READY
;
3734 if (lq
->q_count
== lq
->q_max
)
3742 DEBUG3(printk("scsi(%ld): lun%d - timer %d, "
3743 "count=%d, max=%d, state=%d\n",
3746 atomic_read(&lq
->q_timer
),
3747 lq
->q_count
, lq
->q_max
, lq
->q_state
));
3749 spin_unlock_irqrestore(&lq
->q_lock
, cpu_flags
);
3750 } /* End of for luns */
3751 } /* End of for targets */
3753 /* Loop down handler. */
3754 if (atomic_read(&ha
->loop_down_timer
) > 0 &&
3755 !(test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
)) && ha
->flags
.online
) {
3757 if (atomic_read(&ha
->loop_down_timer
) ==
3758 ha
->loop_down_abort_time
) {
3760 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
3761 "queues before time expire\n",
3764 if (!IS_QLA2100(ha
) && ha
->link_down_timeout
)
3765 atomic_set(&ha
->loop_state
, LOOP_DEAD
);
3767 /* Schedule an ISP abort to return any tape commands. */
3768 spin_lock_irqsave(&ha
->hardware_lock
, cpu_flags
);
3769 for (index
= 1; index
< MAX_OUTSTANDING_COMMANDS
;
3771 sp
= ha
->outstanding_cmds
[index
];
3774 if (!(sp
->fclun
->fcport
->flags
&
3778 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
3781 spin_unlock_irqrestore(&ha
->hardware_lock
, cpu_flags
);
3783 set_bit(ABORT_QUEUES_NEEDED
, &ha
->dpc_flags
);
3787 /* if the loop has been down for 4 minutes, reinit adapter */
3788 if (atomic_dec_and_test(&ha
->loop_down_timer
) != 0) {
3789 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
3790 "restarting queues.\n",
3793 set_bit(RESTART_QUEUES_NEEDED
, &ha
->dpc_flags
);
3796 if (!(ha
->device_flags
& DFLG_NO_CABLE
)) {
3797 DEBUG(printk("scsi(%ld): Loop down - "
3800 qla_printk(KERN_WARNING
, ha
,
3801 "Loop down - aborting ISP.\n");
3803 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
3806 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
3808 atomic_read(&ha
->loop_down_timer
)));
3812 * Done Q Handler -- dgFIXME This handler will kick off doneq if we
3813 * haven't process it in 2 seconds.
3815 if (!list_empty(&ha
->done_queue
))
3819 /* Schedule the DPC routine if needed */
3820 if ((test_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
) ||
3821 test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
) ||
3823 test_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
) ||
3824 test_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
)) &&
3825 ha
->dpc_wait
&& !ha
->dpc_active
) {
3830 qla2x00_restart_timer(ha
, WATCH_INTERVAL
);
3834 * qla2x00_extend_timeout
3835 * This routine will extend the timeout to the specified value.
3838 * cmd = SCSI command structure
3844 qla2x00_extend_timeout(struct scsi_cmnd
*cmd
, int timeout
)
3846 srb_t
*sp
= (srb_t
*) CMD_SP(cmd
);
3847 u_long our_jiffies
= (timeout
* HZ
) + jiffies
;
3850 sp
->e_start
= jiffies
;
3851 if (cmd
->eh_timeout
.function
) {
3852 mod_timer(&cmd
->eh_timeout
,our_jiffies
);
3853 sp
->ext_history
|= 1;
3855 if (sp
->timer
.function
!= NULL
) {
3857 * Our internal timer should timeout before the midlayer has a
3858 * chance begin the abort process
3860 mod_timer(&sp
->timer
,our_jiffies
- (QLA_CMD_TIMER_DELTA
* HZ
));
3862 sp
->ext_history
|= 2;
3866 /**************************************************************************
3867 * qla2x00_cmd_timeout
3870 * Handles the command if it times out in any state.
3873 * sp - pointer to validate
3877 * Note:Need to add the support for if( sp->state == SRB_FAILOVER_STATE).
3878 **************************************************************************/
3880 qla2x00_cmd_timeout(srb_t
*sp
)
3884 scsi_qla_host_t
*vis_ha
, *dest_ha
;
3885 struct scsi_cmnd
*cmd
;
3886 unsigned long flags
, cpu_flags
;
3890 vis_ha
= (scsi_qla_host_t
*)cmd
->device
->host
->hostdata
;
3892 DEBUG3(printk("cmd_timeout: Entering sp->state = %x\n", sp
->state
));
3894 t
= cmd
->device
->id
;
3895 l
= cmd
->device
->lun
;
3896 fcport
= sp
->fclun
->fcport
;
3900 * If IO is found either in retry Queue
3902 * Return this IO back to host
3904 spin_lock_irqsave(&vis_ha
->list_lock
, flags
);
3906 if (sp
->state
== SRB_PENDING_STATE
) {
3907 __del_from_pending_queue(vis_ha
, sp
);
3908 DEBUG2(printk("scsi(%ld): Found in Pending queue pid %ld, "
3909 "State = %x., fcport state=%d sjiffs=%lx njiffs=%lx\n",
3910 vis_ha
->host_no
, cmd
->serial_number
, sp
->state
,
3911 atomic_read(&fcport
->state
), sp
->r_start
, jiffies
));
3914 * If FC_DEVICE is marked as dead return the cmd with
3915 * DID_NO_CONNECT status. Otherwise set the host_byte to
3916 * DID_BUS_BUSY to let the OS retry this cmd.
3918 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
||
3919 atomic_read(&fcport
->ha
->loop_state
) == LOOP_DEAD
) {
3920 cmd
->result
= DID_NO_CONNECT
<< 16;
3921 if (atomic_read(&fcport
->ha
->loop_state
) == LOOP_DOWN
)
3922 sp
->err_id
= SRB_ERR_LOOP
;
3924 sp
->err_id
= SRB_ERR_PORT
;
3926 cmd
->result
= DID_BUS_BUSY
<< 16;
3928 __add_to_done_queue(vis_ha
, sp
);
3931 spin_unlock_irqrestore(&vis_ha
->list_lock
, flags
);
3934 qla2x00_done(vis_ha
);
3938 spin_lock_irqsave(&dest_ha
->list_lock
, flags
);
3939 if ((sp
->state
== SRB_RETRY_STATE
) ||
3940 (sp
->state
== SRB_SCSI_RETRY_STATE
)) {
3942 DEBUG2(printk("scsi(%ld): Found in (Scsi) Retry queue or "
3943 "failover Q pid %ld, State = %x., fcport state=%d "
3944 "jiffies=%lx retried=%d\n",
3945 dest_ha
->host_no
, cmd
->serial_number
, sp
->state
,
3946 atomic_read(&fcport
->state
), jiffies
, cmd
->retries
));
3948 if ((sp
->state
== SRB_RETRY_STATE
)) {
3949 __del_from_retry_queue(dest_ha
, sp
);
3950 } else if ((sp
->state
== SRB_SCSI_RETRY_STATE
)) {
3951 __del_from_scsi_retry_queue(dest_ha
, sp
);
3955 * If FC_DEVICE is marked as dead return the cmd with
3956 * DID_NO_CONNECT status. Otherwise set the host_byte to
3957 * DID_BUS_BUSY to let the OS retry this cmd.
3959 if ((atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
) ||
3960 atomic_read(&dest_ha
->loop_state
) == LOOP_DEAD
) {
3961 qla2x00_extend_timeout(cmd
, EXTEND_CMD_TIMEOUT
);
3962 cmd
->result
= DID_NO_CONNECT
<< 16;
3963 if (atomic_read(&dest_ha
->loop_state
) == LOOP_DOWN
)
3964 sp
->err_id
= SRB_ERR_LOOP
;
3966 sp
->err_id
= SRB_ERR_PORT
;
3968 cmd
->result
= DID_BUS_BUSY
<< 16;
3971 __add_to_done_queue(dest_ha
, sp
);
3974 spin_unlock_irqrestore(&dest_ha
->list_lock
, flags
);
3977 qla2x00_done(dest_ha
);
3981 spin_lock_irqsave(&dest_ha
->list_lock
, cpu_flags
);
3982 if (sp
->state
== SRB_DONE_STATE
) {
3983 /* IO in done_q -- leave it */
3984 DEBUG(printk("scsi(%ld): Found in Done queue pid %ld sp=%p.\n",
3985 dest_ha
->host_no
, cmd
->serial_number
, sp
));
3986 } else if (sp
->state
== SRB_SUSPENDED_STATE
) {
3987 DEBUG(printk("scsi(%ld): Found SP %p in suspended state "
3989 dest_ha
->host_no
, sp
, cmd
->serial_number
));
3990 DEBUG(qla2x00_dump_buffer((uint8_t *)sp
, sizeof(srb_t
));)
3991 } else if (sp
->state
== SRB_ACTIVE_STATE
) {
3993 * IO is with ISP find the command in our active list.
3995 spin_unlock_irqrestore(&dest_ha
->list_lock
, cpu_flags
);
3996 spin_lock_irqsave(&dest_ha
->hardware_lock
, flags
);
3997 if (sp
== dest_ha
->outstanding_cmds
[
3998 (unsigned long)sp
->cmd
->host_scribble
]) {
4000 DEBUG(printk("cmd_timeout: Found in ISP \n"));
4002 if (sp
->flags
& SRB_TAPE
) {
4004 * We cannot allow the midlayer error handler
4005 * to wakeup and begin the abort process.
4006 * Extend the timer so that the firmware can
4007 * properly return the IOCB.
4009 DEBUG(printk("cmd_timeout: Extending timeout "
4010 "of FCP2 tape command!\n"));
4011 qla2x00_extend_timeout(sp
->cmd
,
4012 EXTEND_CMD_TIMEOUT
);
4014 sp
->state
= SRB_ACTIVE_TIMEOUT_STATE
;
4015 spin_unlock_irqrestore(&dest_ha
->hardware_lock
, flags
);
4017 spin_unlock_irqrestore(&dest_ha
->hardware_lock
, flags
);
4019 "qla_cmd_timeout: State indicates it is with "
4020 "ISP, But not in active array\n");
4022 spin_lock_irqsave(&dest_ha
->list_lock
, cpu_flags
);
4023 } else if (sp
->state
== SRB_ACTIVE_TIMEOUT_STATE
) {
4024 DEBUG(printk("qla2100%ld: Found in Active timeout state"
4025 "pid %ld, State = %x., \n",
4027 sp
->cmd
->serial_number
, sp
->state
);)
4030 DEBUG2(printk("cmd_timeout%ld: LOST command state = "
4032 vis_ha
->host_no
, sp
->state
,sp
);)
4034 qla_printk(KERN_INFO
, vis_ha
,
4035 "cmd_timeout: LOST command state = 0x%x\n", sp
->state
);
4037 spin_unlock_irqrestore(&dest_ha
->list_lock
, cpu_flags
);
4039 DEBUG3(printk("cmd_timeout: Leaving\n");)
4042 /**************************************************************************
4044 * Process completed commands.
4047 * old_ha = adapter block pointer.
4049 **************************************************************************/
4051 qla2x00_done(scsi_qla_host_t
*old_ha
)
4054 struct scsi_cmnd
*cmd
;
4055 unsigned long flags
= 0;
4056 scsi_qla_host_t
*ha
;
4057 scsi_qla_host_t
*vis_ha
;
4058 int send_marker_once
= 0;
4060 LIST_HEAD(local_sp_list
);
4063 * Get into local queue such that we do not wind up calling done queue
4064 * tasklet for the same IOs from DPC or any other place.
4066 spin_lock_irqsave(&old_ha
->list_lock
, flags
);
4067 list_splice_init(&old_ha
->done_queue
, &local_sp_list
);
4068 spin_unlock_irqrestore(&old_ha
->list_lock
, flags
);
4071 * All done commands are in the local queue, now do the call back.
4073 list_for_each_entry_safe(sp
, sptemp
, &local_sp_list
, list
) {
4074 old_ha
->done_q_cnt
--;
4075 sp
->state
= SRB_NO_QUEUE_STATE
;
4077 /* remove command from local list */
4078 list_del_init(&sp
->list
);
4084 vis_ha
= (scsi_qla_host_t
*)cmd
->device
->host
->hostdata
;
4088 if (sp
->flags
& SRB_DMA_VALID
) {
4089 sp
->flags
&= ~SRB_DMA_VALID
;
4091 /* Release memory used for this I/O */
4093 pci_unmap_sg(ha
->pdev
, cmd
->request_buffer
,
4094 cmd
->use_sg
, cmd
->sc_data_direction
);
4095 } else if (cmd
->request_bufflen
) {
4096 pci_unmap_page(ha
->pdev
, sp
->dma_handle
,
4097 cmd
->request_bufflen
,
4098 cmd
->sc_data_direction
);
4103 switch (host_byte(cmd
->result
)) {
4110 * Set marker needed, so we don't have to
4111 * send multiple markers
4113 if (!send_marker_once
) {
4114 ha
->marker_needed
= 1;
4121 * A backdoor device-reset requires different
4122 * error handling. This code differentiates
4123 * between normal error handling and the
4127 if (ha
->host
->eh_active
!= EH_ACTIVE
)
4128 cmd
->result
= DID_BUS_BUSY
<< 16;
4133 sp
->flags
&= ~SRB_ABORT_PENDING
;
4134 sp
->flags
|= SRB_ABORTED
;
4136 if (sp
->flags
& SRB_TIMEOUT
)
4137 cmd
->result
= DID_TIME_OUT
<< 16;
4142 DEBUG2(printk("scsi(%ld:%d:%d) %s: did_error "
4143 "= %d, comp-scsi= 0x%x-0x%x pid=%ld.\n",
4145 cmd
->device
->id
, cmd
->device
->lun
,
4147 host_byte(cmd
->result
),
4148 CMD_COMPL_STATUS(cmd
),
4149 CMD_SCSI_STATUS(cmd
), cmd
->serial_number
));
4154 * Call the mid-level driver interrupt handler -- via sp_put()
4157 } /* end of while */
4161 * qla2x00_process_response_queue_in_zio_mode
4162 * Process response queue completion as fast as possible
4163 * to achieve Zero Interrupt Opertions-ZIO
4166 * ha = adapter block pointer.
4172 qla2x00_process_response_queue_in_zio_mode(scsi_qla_host_t
*ha
)
4174 unsigned long flags
;
4176 /* Check for unprocessed commands in response queue. */
4177 if (!ha
->flags
.process_response_queue
)
4179 if (!ha
->flags
.online
)
4181 if (ha
->response_ring_ptr
->signature
== RESPONSE_PROCESSED
)
4184 spin_lock_irqsave(&ha
->hardware_lock
,flags
);
4185 qla2x00_process_response_queue(ha
);
4186 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
4191 * Retrieve and process next job in the LUN queue.
4194 * tq = SCSI target queue pointer.
4195 * lq = SCSI LUN queue pointer.
4196 * TGT_LOCK must be already obtained.
4199 * Releases TGT_LOCK upon exit.
4202 * Kernel/Interrupt context.
4204 * Note: This routine will always try to start I/O from visible HBA.
4207 qla2x00_next(scsi_qla_host_t
*vis_ha
)
4210 unsigned long flags
;
4211 scsi_qla_host_t
*dest_ha
;
4214 LIST_HEAD(local_sp_list
);
4218 spin_lock_irqsave(&vis_ha
->list_lock
, flags
);
4219 list_splice_init(&vis_ha
->pending_queue
, &local_sp_list
);
4220 vis_ha
->qthreads
= 0;
4221 spin_unlock_irqrestore(&vis_ha
->list_lock
, flags
);
4223 list_for_each_entry_safe(sp
, sptemp
, &local_sp_list
, list
) {
4224 list_del_init(&sp
->list
);
4225 sp
->state
= SRB_NO_QUEUE_STATE
;
4227 fcport
= sp
->fclun
->fcport
;
4228 dest_ha
= fcport
->ha
;
4230 /* If device is dead then send request back to OS */
4231 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
) {
4232 sp
->cmd
->result
= DID_NO_CONNECT
<< 16;
4233 if (atomic_read(&dest_ha
->loop_state
) == LOOP_DOWN
)
4234 sp
->err_id
= SRB_ERR_LOOP
;
4236 sp
->err_id
= SRB_ERR_PORT
;
4238 DEBUG3(printk("scsi(%ld): loop/port is down - pid=%ld, "
4239 "sp=%p err_id=%d loopid=0x%x queued to dest HBA "
4240 "scsi%ld.\n", dest_ha
->host_no
,
4241 sp
->cmd
->serial_number
, sp
, sp
->err_id
,
4242 fcport
->loop_id
, dest_ha
->host_no
));
4244 * Initiate a failover - done routine will initiate.
4246 add_to_done_queue(vis_ha
, sp
);
4252 * SCSI Kluge: Whenever, we need to wait for an event such as
4253 * loop down (i.e. loop_down_timer ) or port down (i.e. LUN
4254 * request qeueue is suspended) then we will recycle new
4255 * commands back to the SCSI layer. We do this because this is
4256 * normally a temporary condition and we don't want the
4257 * mid-level scsi.c driver to get upset and start aborting
4258 * commands. The timeout value is extracted from the command
4259 * minus 1-second and put on a retry queue (watchdog). Once the
4260 * command timeout it is returned to the mid-level with a BUSY
4261 * status, so the mid-level will retry it. This process
4262 * continues until the LOOP DOWN time expires or the condition
4265 if (!(sp
->flags
& (SRB_IOCTL
| SRB_TAPE
)) &&
4266 (atomic_read(&fcport
->state
) != FCS_ONLINE
||
4267 test_bit(ABORT_ISP_ACTIVE
, &dest_ha
->dpc_flags
) ||
4268 atomic_read(&dest_ha
->loop_state
) != LOOP_READY
)) {
4270 DEBUG3(printk("scsi(%ld): pid=%ld port=0x%x state=%d "
4271 "loop state=%d, loop counter=0x%x "
4272 "dpc_flags=0x%lx\n", sp
->cmd
->serial_number
,
4273 dest_ha
->host_no
, fcport
->loop_id
,
4274 atomic_read(&fcport
->state
),
4275 atomic_read(&dest_ha
->loop_state
),
4276 atomic_read(&dest_ha
->loop_down_timer
),
4277 dest_ha
->dpc_flags
));
4279 qla2x00_extend_timeout(sp
->cmd
, EXTEND_CMD_TIMEOUT
);
4280 add_to_retry_queue(vis_ha
, sp
);
4286 * If this request's lun is suspended then put the request on
4287 * the scsi_retry queue.
4289 if (!(sp
->flags
& (SRB_IOCTL
| SRB_TAPE
)) &&
4290 sp
->lun_queue
->q_state
== LUN_STATE_WAIT
) {
4291 DEBUG3(printk("scsi(%ld): lun wait state - pid=%ld, "
4292 "opcode=%d, allowed=%d, retries=%d\n",
4294 sp
->cmd
->serial_number
,
4299 add_to_scsi_retry_queue(vis_ha
, sp
);
4304 sp
->lun_queue
->io_cnt
++;
4306 rval
= qla2x00_start_scsi(sp
);
4307 if (rval
!= QLA_SUCCESS
) {
4308 /* Place request back on top of device queue */
4309 /* add to the top of queue */
4310 add_to_pending_queue_head(vis_ha
, sp
);
4312 sp
->lun_queue
->io_cnt
--;
4316 if (!IS_QLA2100(vis_ha
) && !IS_QLA2200(vis_ha
)) {
4317 /* Process response_queue if ZIO support is enabled*/
4318 qla2x00_process_response_queue_in_zio_mode(vis_ha
);
4323 /* XXX(hch): crude hack to emulate a down_timeout() */
4325 qla2x00_down_timeout(struct semaphore
*sema
, unsigned long timeout
)
4327 const unsigned int step
= HZ
/10;
4330 if (!down_trylock(sema
))
4332 set_current_state(TASK_INTERRUPTIBLE
);
4333 if (schedule_timeout(step
))
4335 } while ((timeout
-= step
) > 0);
4341 qla2xxx_get_port_id(struct scsi_target
*starget
)
4343 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
4344 scsi_qla_host_t
*ha
= to_qla_host(shost
);
4347 list_for_each_entry(fc
, &ha
->fcports
, list
) {
4348 if (fc
->os_target_id
== starget
->id
) {
4349 fc_starget_port_id(starget
) = fc
->d_id
.b
.domain
<< 16 |
4350 fc
->d_id
.b
.area
<< 8 |
4355 fc_starget_port_id(starget
) = -1;
4359 qla2xxx_get_port_name(struct scsi_target
*starget
)
4361 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
4362 scsi_qla_host_t
*ha
= to_qla_host(shost
);
4365 list_for_each_entry(fc
, &ha
->fcports
, list
) {
4366 if (fc
->os_target_id
== starget
->id
) {
4367 fc_starget_port_name(starget
) =
4368 __be64_to_cpu(*(uint64_t *)fc
->port_name
);
4372 fc_starget_port_name(starget
) = -1;
4376 qla2xxx_get_node_name(struct scsi_target
*starget
)
4378 struct Scsi_Host
*shost
= dev_to_shost(starget
->dev
.parent
);
4379 scsi_qla_host_t
*ha
= to_qla_host(shost
);
4382 list_for_each_entry(fc
, &ha
->fcports
, list
) {
4383 if (fc
->os_target_id
== starget
->id
) {
4384 fc_starget_node_name(starget
) =
4385 __be64_to_cpu(*(uint64_t *)fc
->node_name
);
4389 fc_starget_node_name(starget
) = -1;
4392 static struct fc_function_template qla2xxx_transport_functions
= {
4393 .get_starget_port_id
= qla2xxx_get_port_id
,
4394 .show_starget_port_id
= 1,
4395 .get_starget_port_name
= qla2xxx_get_port_name
,
4396 .show_starget_port_name
= 1,
4397 .get_starget_node_name
= qla2xxx_get_node_name
,
4398 .show_starget_node_name
= 1,
4402 * qla2x00_module_init - Module initialization.
4405 qla2x00_module_init(void)
4407 /* Allocate cache for SRBs. */
4408 sprintf(srb_cachep_name
, "qla2xxx_srbs");
4409 srb_cachep
= kmem_cache_create(srb_cachep_name
, sizeof(srb_t
), 0,
4410 SLAB_HWCACHE_ALIGN
, NULL
, NULL
);
4411 if (srb_cachep
== NULL
) {
4413 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
4417 /* Derive version string. */
4418 strcpy(qla2x00_version_str
, QLA2XXX_VERSION
);
4420 strcat(qla2x00_version_str
, "-debug");
4423 qla2xxx_transport_template
= fc_attach_transport(&qla2xxx_transport_functions
);
4424 if (!qla2xxx_transport_template
)
4427 printk(KERN_INFO
"QLogic Fibre Channel HBA Driver\n");
4432 * qla2x00_module_exit - Module cleanup.
4435 qla2x00_module_exit(void)
4437 /* Free SRBs cache. */
4438 if (srb_cachep
!= NULL
) {
4439 if (kmem_cache_destroy(srb_cachep
) != 0) {
4441 "qla2xxx: Unable to free SRB cache...Memory pools "
4447 fc_release_transport(qla2xxx_transport_template
);
4450 module_init(qla2x00_module_init
);
4451 module_exit(qla2x00_module_exit
);
4453 MODULE_AUTHOR("QLogic Corporation");
4454 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
4455 MODULE_LICENSE("GPL");
4456 MODULE_VERSION(QLA2XXX_VERSION
);