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 static kmem_cache_t
*srb_cachep
;
42 * Ioctl related information.
46 int ql2xlogintimeout
= 20;
47 module_param(ql2xlogintimeout
, int, S_IRUGO
|S_IRUSR
);
48 MODULE_PARM_DESC(ql2xlogintimeout
,
49 "Login timeout value in seconds.");
51 int qlport_down_retry
= 30;
52 module_param(qlport_down_retry
, int, S_IRUGO
|S_IRUSR
);
53 MODULE_PARM_DESC(qlport_down_retry
,
54 "Maximum number of command retries to a port that returns"
55 "a PORT-DOWN status.");
57 int ql2xplogiabsentdevice
;
58 module_param(ql2xplogiabsentdevice
, int, S_IRUGO
|S_IWUSR
);
59 MODULE_PARM_DESC(ql2xplogiabsentdevice
,
60 "Option to enable PLOGI to devices that are not present after "
61 "a Fabric scan. This is needed for several broken switches."
62 "Default is 0 - no PLOGI. 1 - perfom PLOGI.");
64 int ql2xenablezio
= 0;
65 module_param(ql2xenablezio
, int, S_IRUGO
|S_IRUSR
);
66 MODULE_PARM_DESC(ql2xenablezio
,
67 "Option to enable ZIO:If 1 then enable it otherwise"
68 " use the default set in the NVRAM."
69 " Default is 0 : disabled");
71 int ql2xintrdelaytimer
= 10;
72 module_param(ql2xintrdelaytimer
, int, S_IRUGO
|S_IRUSR
);
73 MODULE_PARM_DESC(ql2xintrdelaytimer
,
74 "ZIO: Waiting time for Firmware before it generates an "
75 "interrupt to the host to notify completion of request.");
77 int ql2xloginretrycount
= 0;
78 module_param(ql2xloginretrycount
, int, S_IRUGO
|S_IRUSR
);
79 MODULE_PARM_DESC(ql2xloginretrycount
,
80 "Specify an alternate value for the NVRAM login retry count.");
82 static void qla2x00_free_device(scsi_qla_host_t
*);
84 static void qla2x00_config_dma_addressing(scsi_qla_host_t
*ha
);
87 * SCSI host template entry points
89 static int qla2xxx_slave_configure(struct scsi_device
* device
);
90 static int qla2xxx_slave_alloc(struct scsi_device
*);
91 static void qla2xxx_slave_destroy(struct scsi_device
*);
92 static int qla2x00_queuecommand(struct scsi_cmnd
*cmd
,
93 void (*fn
)(struct scsi_cmnd
*));
94 static int qla2xxx_eh_abort(struct scsi_cmnd
*);
95 static int qla2xxx_eh_device_reset(struct scsi_cmnd
*);
96 static int qla2xxx_eh_bus_reset(struct scsi_cmnd
*);
97 static int qla2xxx_eh_host_reset(struct scsi_cmnd
*);
98 static int qla2x00_loop_reset(scsi_qla_host_t
*ha
);
99 static int qla2x00_device_reset(scsi_qla_host_t
*, fc_port_t
*);
101 static struct scsi_host_template qla2x00_driver_template
= {
102 .module
= THIS_MODULE
,
104 .queuecommand
= qla2x00_queuecommand
,
106 .eh_abort_handler
= qla2xxx_eh_abort
,
107 .eh_device_reset_handler
= qla2xxx_eh_device_reset
,
108 .eh_bus_reset_handler
= qla2xxx_eh_bus_reset
,
109 .eh_host_reset_handler
= qla2xxx_eh_host_reset
,
111 .slave_configure
= qla2xxx_slave_configure
,
113 .slave_alloc
= qla2xxx_slave_alloc
,
114 .slave_destroy
= qla2xxx_slave_destroy
,
117 .use_clustering
= ENABLE_CLUSTERING
,
118 .sg_tablesize
= SG_ALL
,
121 * The RISC allows for each command to transfer (2^32-1) bytes of data,
122 * which equates to 0x800000 sectors.
124 .max_sectors
= 0xFFFF,
127 static struct scsi_transport_template
*qla2xxx_transport_template
= NULL
;
129 /* TODO Convert to inlines
133 #define WATCH_INTERVAL 1 /* number of seconds */
135 static void qla2x00_timer(scsi_qla_host_t
*);
137 static __inline__
void qla2x00_start_timer(scsi_qla_host_t
*,
138 void *, unsigned long);
139 static __inline__
void qla2x00_restart_timer(scsi_qla_host_t
*, unsigned long);
140 static __inline__
void qla2x00_stop_timer(scsi_qla_host_t
*);
143 qla2x00_start_timer(scsi_qla_host_t
*ha
, void *func
, unsigned long interval
)
145 init_timer(&ha
->timer
);
146 ha
->timer
.expires
= jiffies
+ interval
* HZ
;
147 ha
->timer
.data
= (unsigned long)ha
;
148 ha
->timer
.function
= (void (*)(unsigned long))func
;
149 add_timer(&ha
->timer
);
150 ha
->timer_active
= 1;
154 qla2x00_restart_timer(scsi_qla_host_t
*ha
, unsigned long interval
)
156 mod_timer(&ha
->timer
, jiffies
+ interval
* HZ
);
159 static __inline__
void
160 qla2x00_stop_timer(scsi_qla_host_t
*ha
)
162 del_timer_sync(&ha
->timer
);
163 ha
->timer_active
= 0;
166 static int qla2x00_do_dpc(void *data
);
168 static void qla2x00_rst_aen(scsi_qla_host_t
*);
170 static uint8_t qla2x00_mem_alloc(scsi_qla_host_t
*);
171 static void qla2x00_mem_free(scsi_qla_host_t
*ha
);
172 static int qla2x00_allocate_sp_pool( scsi_qla_host_t
*ha
);
173 static void qla2x00_free_sp_pool(scsi_qla_host_t
*ha
);
174 static srb_t
*qla2x00_get_new_sp(scsi_qla_host_t
*);
175 static void qla2x00_sp_free_dma(scsi_qla_host_t
*, srb_t
*);
176 void qla2x00_sp_compl(scsi_qla_host_t
*ha
, srb_t
*);
178 /* -------------------------------------------------------------------------- */
181 qla2x00_get_pci_info_str(struct scsi_qla_host
*ha
, char *str
)
183 static char *pci_bus_modes
[] = {
184 "33", "66", "100", "133",
189 pci_bus
= (ha
->pci_attr
& (BIT_9
| BIT_10
)) >> 9;
192 strcat(str
, pci_bus_modes
[pci_bus
]);
194 pci_bus
= (ha
->pci_attr
& BIT_8
) >> 8;
196 strcat(str
, pci_bus_modes
[pci_bus
]);
198 strcat(str
, " MHz)");
204 qla2x00_get_fw_version_str(struct scsi_qla_host
*ha
, char *str
)
208 sprintf(str
, "%d.%02d.%02d ", ha
->fw_major_version
,
209 ha
->fw_minor_version
,
210 ha
->fw_subminor_version
);
212 if (ha
->fw_attributes
& BIT_9
) {
217 switch (ha
->fw_attributes
& 0xFF) {
231 sprintf(un_str
, "(%x)", ha
->fw_attributes
);
235 if (ha
->fw_attributes
& 0x100)
241 /**************************************************************************
242 * qla2x00_queuecommand
245 * Queue a command to the controller.
248 * cmd - pointer to Scsi cmd structure
249 * fn - pointer to Scsi done function
255 * The mid-level driver tries to ensures that queuecommand never gets invoked
256 * concurrently with itself or the interrupt handler (although the
257 * interrupt handler may call this routine as part of request-completion
259 **************************************************************************/
261 qla2x00_queuecommand(struct scsi_cmnd
*cmd
, void (*done
)(struct scsi_cmnd
*))
263 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
264 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
269 cmd
->result
= DID_NO_CONNECT
<< 16;
270 goto qc_fail_command
;
273 if (atomic_read(&fcport
->state
) != FCS_ONLINE
) {
274 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
||
275 atomic_read(&ha
->loop_state
) == LOOP_DEAD
) {
276 cmd
->result
= DID_NO_CONNECT
<< 16;
277 goto qc_fail_command
;
282 spin_unlock_irq(ha
->host
->host_lock
);
284 /* Allocate a command packet from the "sp" pool. */
285 if ((sp
= qla2x00_get_new_sp(ha
)) == NULL
) {
286 goto qc_host_busy_lock
;
294 CMD_SP(cmd
) = (void *)sp
;
295 cmd
->scsi_done
= done
;
297 rval
= qla2x00_start_scsi(sp
);
298 if (rval
!= QLA_SUCCESS
)
299 goto qc_host_busy_free_sp
;
301 /* Manage unprocessed RIO/ZIO commands in response queue. */
302 if (ha
->flags
.online
&& ha
->flags
.process_response_queue
&&
303 ha
->response_ring_ptr
->signature
!= RESPONSE_PROCESSED
) {
306 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
307 qla2x00_process_response_queue(ha
);
308 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
311 spin_lock_irq(ha
->host
->host_lock
);
315 qc_host_busy_free_sp
:
316 qla2x00_sp_free_dma(ha
, sp
);
318 mempool_free(sp
, ha
->srb_mempool
);
321 spin_lock_irq(ha
->host
->host_lock
);
324 return SCSI_MLQUEUE_HOST_BUSY
;
333 * qla2x00_eh_wait_on_command
334 * Waits for the command to be returned by the Firmware for some
338 * ha = actual ha whose done queue will contain the command
339 * returned by firmware.
340 * cmd = Scsi Command to wait on.
341 * flag = Abort/Reset(Bus or Device Reset)
348 qla2x00_eh_wait_on_command(scsi_qla_host_t
*ha
, struct scsi_cmnd
*cmd
)
350 #define ABORT_POLLING_PERIOD HZ
351 #define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
352 unsigned long wait_iter
= ABORT_WAIT_ITER
;
353 int ret
= QLA_SUCCESS
;
355 while (CMD_SP(cmd
)) {
356 set_current_state(TASK_UNINTERRUPTIBLE
);
357 schedule_timeout(ABORT_POLLING_PERIOD
);
363 ret
= QLA_FUNCTION_FAILED
;
369 * qla2x00_wait_for_hba_online
370 * Wait till the HBA is online after going through
371 * <= MAX_RETRIES_OF_ISP_ABORT or
372 * finally HBA is disabled ie marked offline
375 * ha - pointer to host adapter structure
378 * Does context switching-Release SPIN_LOCK
379 * (if any) before calling this routine.
382 * Success (Adapter is online) : 0
383 * Failed (Adapter is offline/disabled) : 1
386 qla2x00_wait_for_hba_online(scsi_qla_host_t
*ha
)
389 unsigned long wait_online
;
391 wait_online
= jiffies
+ (MAX_LOOP_TIMEOUT
* HZ
);
392 while (((test_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
)) ||
393 test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
) ||
394 test_bit(ISP_ABORT_RETRY
, &ha
->dpc_flags
) ||
395 ha
->dpc_active
) && time_before(jiffies
, wait_online
)) {
399 if (ha
->flags
.online
)
400 return_status
= QLA_SUCCESS
;
402 return_status
= QLA_FUNCTION_FAILED
;
404 DEBUG2(printk("%s return_status=%d\n",__func__
,return_status
));
406 return (return_status
);
410 * qla2x00_wait_for_loop_ready
411 * Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
412 * to be in LOOP_READY state.
414 * ha - pointer to host adapter structure
417 * Does context switching-Release SPIN_LOCK
418 * (if any) before calling this routine.
422 * Success (LOOP_READY) : 0
423 * Failed (LOOP_NOT_READY) : 1
426 qla2x00_wait_for_loop_ready(scsi_qla_host_t
*ha
)
428 int return_status
= QLA_SUCCESS
;
429 unsigned long loop_timeout
;
431 /* wait for 5 min at the max for loop to be ready */
432 loop_timeout
= jiffies
+ (MAX_LOOP_TIMEOUT
* HZ
);
434 while ((!atomic_read(&ha
->loop_down_timer
) &&
435 atomic_read(&ha
->loop_state
) == LOOP_DOWN
) ||
436 atomic_read(&ha
->loop_state
) != LOOP_READY
) {
438 if (time_after_eq(jiffies
, loop_timeout
)) {
439 return_status
= QLA_FUNCTION_FAILED
;
443 return (return_status
);
446 /**************************************************************************
450 * The abort function will abort the specified command.
453 * cmd = Linux SCSI command packet to be aborted.
456 * Either SUCCESS or FAILED.
459 **************************************************************************/
461 qla2xxx_eh_abort(struct scsi_cmnd
*cmd
)
463 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
466 unsigned int id
, lun
;
467 unsigned long serial
;
474 id
= cmd
->device
->id
;
475 lun
= cmd
->device
->lun
;
476 serial
= cmd
->serial_number
;
478 /* Check active list for command command. */
479 spin_lock(&ha
->hardware_lock
);
480 for (i
= 1; i
< MAX_OUTSTANDING_COMMANDS
; i
++) {
481 sp
= ha
->outstanding_cmds
[i
];
489 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
490 "sp->state=%x\n", __func__
, ha
->host_no
, sp
, serial
,
492 DEBUG3(qla2x00_print_scsi_cmd(cmd
);)
494 spin_unlock(&ha
->hardware_lock
);
495 if (qla2x00_abort_command(ha
, sp
)) {
496 DEBUG2(printk("%s(%ld): abort_command "
497 "mbx failed.\n", __func__
, ha
->host_no
));
499 DEBUG3(printk("%s(%ld): abort_command "
500 "mbx success.\n", __func__
, ha
->host_no
));
503 spin_lock(&ha
->hardware_lock
);
508 /* Wait for the command to be returned. */
509 if (ret
== SUCCESS
) {
510 spin_unlock(&ha
->hardware_lock
);
511 if (qla2x00_eh_wait_on_command(ha
, cmd
) != QLA_SUCCESS
) {
512 qla_printk(KERN_ERR
, ha
,
513 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
514 "%x.\n", ha
->host_no
, id
, lun
, serial
, ret
);
516 spin_lock(&ha
->hardware_lock
);
519 qla_printk(KERN_INFO
, ha
,
520 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha
->host_no
,
521 id
, lun
, serial
, ret
);
526 /**************************************************************************
527 * qla2x00_eh_wait_for_pending_target_commands
530 * Waits for all the commands to come back from the specified target.
533 * ha - pointer to scsi_qla_host structure.
536 * Either SUCCESS or FAILED.
539 **************************************************************************/
541 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t
*ha
, unsigned int t
)
546 struct scsi_cmnd
*cmd
;
551 * Waiting for all commands for the designated target in the active
554 for (cnt
= 1; cnt
< MAX_OUTSTANDING_COMMANDS
; cnt
++) {
555 spin_lock(&ha
->hardware_lock
);
556 sp
= ha
->outstanding_cmds
[cnt
];
559 spin_unlock(&ha
->hardware_lock
);
560 if (cmd
->device
->id
== t
) {
561 if (!qla2x00_eh_wait_on_command(ha
, cmd
)) {
567 spin_unlock(&ha
->hardware_lock
);
574 /**************************************************************************
575 * qla2xxx_eh_device_reset
578 * The device reset function will reset the target and abort any
579 * executing commands.
581 * NOTE: The use of SP is undefined within this context. Do *NOT*
582 * attempt to use this value, even if you determine it is
586 * cmd = Linux SCSI command packet of the command that cause the
590 * SUCCESS/FAILURE (defined as macro in scsi.h).
592 **************************************************************************/
594 qla2xxx_eh_device_reset(struct scsi_cmnd
*cmd
)
596 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
597 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
600 unsigned int id
, lun
;
601 unsigned long serial
;
605 id
= cmd
->device
->id
;
606 lun
= cmd
->device
->lun
;
607 serial
= cmd
->serial_number
;
609 sp
= (srb_t
*) CMD_SP(cmd
);
613 qla_printk(KERN_INFO
, ha
,
614 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha
->host_no
, id
, lun
);
616 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
617 goto eh_dev_reset_done
;
619 if (qla2x00_wait_for_loop_ready(ha
) == QLA_SUCCESS
) {
620 if (qla2x00_device_reset(ha
, fcport
) == 0)
623 #if defined(LOGOUT_AFTER_DEVICE_RESET)
624 if (ret
== SUCCESS
) {
625 if (fcport
->flags
& FC_FABRIC_DEVICE
) {
626 qla2x00_fabric_logout(ha
, fcport
->loop_id
);
627 qla2x00_mark_device_lost(ha
, fcport
);
632 DEBUG2(printk(KERN_INFO
633 "%s failed: loop not ready\n",__func__
);)
637 DEBUG3(printk("%s(%ld): device reset failed\n",
638 __func__
, ha
->host_no
));
639 qla_printk(KERN_INFO
, ha
, "%s: device reset failed\n",
642 goto eh_dev_reset_done
;
646 * If we are coming down the EH path, wait for all commands to
647 * complete for the device.
649 if (cmd
->device
->host
->eh_active
) {
650 if (qla2x00_eh_wait_for_pending_target_commands(ha
, id
))
654 DEBUG3(printk("%s(%ld): failed while waiting for "
655 "commands\n", __func__
, ha
->host_no
));
656 qla_printk(KERN_INFO
, ha
,
657 "%s: failed while waiting for commands\n",
660 goto eh_dev_reset_done
;
664 qla_printk(KERN_INFO
, ha
,
665 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha
->host_no
, id
, lun
);
671 /**************************************************************************
672 * qla2x00_eh_wait_for_pending_commands
675 * Waits for all the commands to come back from the specified host.
678 * ha - pointer to scsi_qla_host structure.
685 **************************************************************************/
687 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t
*ha
)
692 struct scsi_cmnd
*cmd
;
697 * Waiting for all commands for the designated target in the active
700 for (cnt
= 1; cnt
< MAX_OUTSTANDING_COMMANDS
; cnt
++) {
701 spin_lock(&ha
->hardware_lock
);
702 sp
= ha
->outstanding_cmds
[cnt
];
705 spin_unlock(&ha
->hardware_lock
);
706 status
= qla2x00_eh_wait_on_command(ha
, cmd
);
711 spin_unlock(&ha
->hardware_lock
);
718 /**************************************************************************
719 * qla2xxx_eh_bus_reset
722 * The bus reset function will reset the bus and abort any executing
726 * cmd = Linux SCSI command packet of the command that cause the
730 * SUCCESS/FAILURE (defined as macro in scsi.h).
732 **************************************************************************/
734 qla2xxx_eh_bus_reset(struct scsi_cmnd
*cmd
)
736 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
737 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
740 unsigned int id
, lun
;
741 unsigned long serial
;
745 id
= cmd
->device
->id
;
746 lun
= cmd
->device
->lun
;
747 serial
= cmd
->serial_number
;
749 sp
= (srb_t
*) CMD_SP(cmd
);
753 qla_printk(KERN_INFO
, ha
,
754 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha
->host_no
, id
, lun
);
756 spin_unlock_irq(ha
->host
->host_lock
);
758 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
759 DEBUG2(printk("%s failed:board disabled\n",__func__
));
760 goto eh_bus_reset_done
;
763 if (qla2x00_wait_for_loop_ready(ha
) == QLA_SUCCESS
) {
764 if (qla2x00_loop_reset(ha
) == QLA_SUCCESS
)
768 goto eh_bus_reset_done
;
770 /* Waiting for our command in done_queue to be returned to OS.*/
771 if (cmd
->device
->host
->eh_active
)
772 if (!qla2x00_eh_wait_for_pending_commands(ha
))
776 qla_printk(KERN_INFO
, ha
, "%s: reset %s\n", __func__
,
777 (ret
== FAILED
) ? "failed" : "succeded");
779 spin_lock_irq(ha
->host
->host_lock
);
784 /**************************************************************************
785 * qla2xxx_eh_host_reset
788 * The reset function will reset the Adapter.
791 * cmd = Linux SCSI command packet of the command that cause the
795 * Either SUCCESS or FAILED.
798 **************************************************************************/
800 qla2xxx_eh_host_reset(struct scsi_cmnd
*cmd
)
802 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
803 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
806 unsigned int id
, lun
;
807 unsigned long serial
;
811 id
= cmd
->device
->id
;
812 lun
= cmd
->device
->lun
;
813 serial
= cmd
->serial_number
;
815 sp
= (srb_t
*) CMD_SP(cmd
);
819 qla_printk(KERN_INFO
, ha
,
820 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha
->host_no
, id
, lun
);
822 spin_unlock_irq(ha
->host
->host_lock
);
824 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
825 goto eh_host_reset_lock
;
828 * Fixme-may be dpc thread is active and processing
829 * loop_resync,so wait a while for it to
830 * be completed and then issue big hammer.Otherwise
831 * it may cause I/O failure as big hammer marks the
832 * devices as lost kicking of the port_down_timer
833 * while dpc is stuck for the mailbox to complete.
835 qla2x00_wait_for_loop_ready(ha
);
836 set_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
837 if (qla2x00_abort_isp(ha
)) {
838 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
839 /* failed. schedule dpc to try */
840 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
842 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
843 goto eh_host_reset_lock
;
845 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
847 /* Waiting for our command in done_queue to be returned to OS.*/
848 if (qla2x00_eh_wait_for_pending_commands(ha
))
852 spin_lock_irq(ha
->host
->host_lock
);
854 qla_printk(KERN_INFO
, ha
, "%s: reset %s\n", __func__
,
855 (ret
== FAILED
) ? "failed" : "succeded");
865 * ha = adapter block pointer.
871 qla2x00_loop_reset(scsi_qla_host_t
*ha
)
873 int status
= QLA_SUCCESS
;
874 struct fc_port
*fcport
;
876 if (ha
->flags
.enable_lip_reset
) {
877 status
= qla2x00_lip_reset(ha
);
880 if (status
== QLA_SUCCESS
&& ha
->flags
.enable_target_reset
) {
881 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
882 if (fcport
->port_type
!= FCT_TARGET
)
885 status
= qla2x00_target_reset(ha
, fcport
);
886 if (status
!= QLA_SUCCESS
)
891 if (status
== QLA_SUCCESS
&&
892 ((!ha
->flags
.enable_target_reset
&&
893 !ha
->flags
.enable_lip_reset
) ||
894 ha
->flags
.enable_lip_full_login
)) {
896 status
= qla2x00_full_login_lip(ha
);
899 /* Issue marker command only when we are going to start the I/O */
900 ha
->marker_needed
= 1;
904 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
909 DEBUG3(printk("%s(%ld): exiting normally.\n",
918 * qla2x00_device_reset
919 * Issue bus device reset message to the target.
922 * ha = adapter block pointer.
924 * TARGET_QUEUE_LOCK must be released.
925 * ADAPTER_STATE_LOCK must be released.
931 qla2x00_device_reset(scsi_qla_host_t
*ha
, fc_port_t
*reset_fcport
)
933 /* Abort Target command will clear Reservation */
934 return qla2x00_abort_target(reset_fcport
);
938 qla2xxx_slave_alloc(struct scsi_device
*sdev
)
940 scsi_qla_host_t
*ha
= to_qla_host(sdev
->host
);
941 struct fc_rport
*rport
= starget_to_rport(scsi_target(sdev
));
949 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
950 if (rport
->port_name
==
951 be64_to_cpu(*(uint64_t *)fcport
->port_name
)) {
959 sdev
->hostdata
= fcport
;
965 qla2xxx_slave_configure(struct scsi_device
*sdev
)
967 scsi_qla_host_t
*ha
= to_qla_host(sdev
->host
);
968 struct fc_rport
*rport
= starget_to_rport(sdev
->sdev_target
);
970 if (sdev
->tagged_supported
)
971 scsi_activate_tcq(sdev
, 32);
973 scsi_deactivate_tcq(sdev
, 32);
975 rport
->dev_loss_tmo
= ha
->port_down_retry_count
+ 5;
981 qla2xxx_slave_destroy(struct scsi_device
*sdev
)
983 sdev
->hostdata
= NULL
;
987 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
990 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
991 * supported addressing method.
994 qla2x00_config_dma_addressing(scsi_qla_host_t
*ha
)
996 /* Assume 32bit DMA address */
997 ha
->flags
.enable_64bit_addressing
= 0;
998 ha
->calc_request_entries
= qla2x00_calc_iocbs_32
;
999 ha
->build_scsi_iocbs
= qla2x00_build_scsi_iocbs_32
;
1002 * Given the two variants pci_set_dma_mask(), allow the compiler to
1003 * assist in setting the proper dma mask.
1005 if (sizeof(dma_addr_t
) > 4) {
1006 if (pci_set_dma_mask(ha
->pdev
, DMA_64BIT_MASK
) == 0) {
1007 ha
->flags
.enable_64bit_addressing
= 1;
1008 ha
->calc_request_entries
= qla2x00_calc_iocbs_64
;
1009 ha
->build_scsi_iocbs
= qla2x00_build_scsi_iocbs_64
;
1011 if (pci_set_consistent_dma_mask(ha
->pdev
,
1013 qla_printk(KERN_DEBUG
, ha
,
1014 "Failed to set 64 bit PCI consistent mask; "
1016 pci_set_consistent_dma_mask(ha
->pdev
,
1020 qla_printk(KERN_DEBUG
, ha
,
1021 "Failed to set 64 bit PCI DMA mask, falling back "
1022 "to 32 bit MASK.\n");
1023 pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1026 pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1031 qla2x00_iospace_config(scsi_qla_host_t
*ha
)
1033 unsigned long pio
, pio_len
, pio_flags
;
1034 unsigned long mmio
, mmio_len
, mmio_flags
;
1036 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1037 pio
= pci_resource_start(ha
->pdev
, 0);
1038 pio_len
= pci_resource_len(ha
->pdev
, 0);
1039 pio_flags
= pci_resource_flags(ha
->pdev
, 0);
1040 if (pio_flags
& IORESOURCE_IO
) {
1041 if (pio_len
< MIN_IOBASE_LEN
) {
1042 qla_printk(KERN_WARNING
, ha
,
1043 "Invalid PCI I/O region size (%s)...\n",
1044 pci_name(ha
->pdev
));
1048 qla_printk(KERN_WARNING
, ha
,
1049 "region #0 not a PIO resource (%s)...\n",
1050 pci_name(ha
->pdev
));
1054 /* Use MMIO operations for all accesses. */
1055 mmio
= pci_resource_start(ha
->pdev
, 1);
1056 mmio_len
= pci_resource_len(ha
->pdev
, 1);
1057 mmio_flags
= pci_resource_flags(ha
->pdev
, 1);
1059 if (!(mmio_flags
& IORESOURCE_MEM
)) {
1060 qla_printk(KERN_ERR
, ha
,
1061 "region #0 not an MMIO resource (%s), aborting\n",
1062 pci_name(ha
->pdev
));
1063 goto iospace_error_exit
;
1065 if (mmio_len
< MIN_IOBASE_LEN
) {
1066 qla_printk(KERN_ERR
, ha
,
1067 "Invalid PCI mem region size (%s), aborting\n",
1068 pci_name(ha
->pdev
));
1069 goto iospace_error_exit
;
1072 if (pci_request_regions(ha
->pdev
, ha
->brd_info
->drv_name
)) {
1073 qla_printk(KERN_WARNING
, ha
,
1074 "Failed to reserve PIO/MMIO regions (%s)\n",
1075 pci_name(ha
->pdev
));
1077 goto iospace_error_exit
;
1080 ha
->pio_address
= pio
;
1081 ha
->pio_length
= pio_len
;
1082 ha
->iobase
= ioremap(mmio
, MIN_IOBASE_LEN
);
1084 qla_printk(KERN_ERR
, ha
,
1085 "cannot remap MMIO (%s), aborting\n", pci_name(ha
->pdev
));
1087 goto iospace_error_exit
;
1097 * PCI driver interface
1099 int qla2x00_probe_one(struct pci_dev
*pdev
, struct qla_board_info
*brd_info
)
1102 device_reg_t __iomem
*reg
;
1103 struct Scsi_Host
*host
;
1104 scsi_qla_host_t
*ha
;
1105 unsigned long flags
= 0;
1106 unsigned long wait_switch
= 0;
1111 if (pci_enable_device(pdev
))
1114 host
= scsi_host_alloc(&qla2x00_driver_template
,
1115 sizeof(scsi_qla_host_t
));
1118 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1119 goto probe_disable_device
;
1122 /* Clear our data area */
1123 ha
= (scsi_qla_host_t
*)host
->hostdata
;
1124 memset(ha
, 0, sizeof(scsi_qla_host_t
));
1128 ha
->host_no
= host
->host_no
;
1129 ha
->brd_info
= brd_info
;
1130 sprintf(ha
->host_str
, "%s_%ld", ha
->brd_info
->drv_name
, ha
->host_no
);
1132 /* Configure PCI I/O space */
1133 ret
= qla2x00_iospace_config(ha
);
1135 goto probe_alloc_failed
;
1138 /* Sanitize the information from PCI BIOS. */
1139 host
->irq
= pdev
->irq
;
1141 qla_printk(KERN_INFO
, ha
,
1142 "Found an %s, irq %d, iobase 0x%p\n", ha
->brd_info
->isp_name
,
1143 host
->irq
, ha
->iobase
);
1145 spin_lock_init(&ha
->hardware_lock
);
1147 ha
->prev_topology
= 0;
1148 ha
->ports
= MAX_BUSES
;
1150 if (IS_QLA2100(ha
)) {
1151 host
->max_id
= MAX_TARGETS_2100
;
1152 ha
->mbx_count
= MAILBOX_REGISTER_COUNT_2100
;
1153 ha
->request_q_length
= REQUEST_ENTRY_CNT_2100
;
1154 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2100
;
1155 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2100
;
1156 host
->sg_tablesize
= 32;
1157 } else if (IS_QLA2200(ha
)) {
1158 host
->max_id
= MAX_TARGETS_2200
;
1159 ha
->mbx_count
= MAILBOX_REGISTER_COUNT
;
1160 ha
->request_q_length
= REQUEST_ENTRY_CNT_2200
;
1161 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2100
;
1162 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2100
;
1163 } else /*if (IS_QLA2300(ha))*/ {
1164 host
->max_id
= MAX_TARGETS_2200
;
1165 ha
->mbx_count
= MAILBOX_REGISTER_COUNT
;
1166 ha
->request_q_length
= REQUEST_ENTRY_CNT_2200
;
1167 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2300
;
1168 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2300
;
1170 host
->can_queue
= ha
->request_q_length
+ 128;
1172 /* load the F/W, read paramaters, and init the H/W */
1173 ha
->instance
= num_hosts
;
1175 init_MUTEX(&ha
->mbx_cmd_sem
);
1176 init_MUTEX_LOCKED(&ha
->mbx_intr_sem
);
1178 INIT_LIST_HEAD(&ha
->list
);
1179 INIT_LIST_HEAD(&ha
->fcports
);
1180 INIT_LIST_HEAD(&ha
->rscn_fcports
);
1183 * These locks are used to prevent more than one CPU
1184 * from modifying the queue at the same time. The
1185 * higher level "host_lock" will reduce most
1186 * contention for these locks.
1188 spin_lock_init(&ha
->mbx_reg_lock
);
1191 init_completion(&ha
->dpc_inited
);
1192 init_completion(&ha
->dpc_exited
);
1194 qla2x00_config_dma_addressing(ha
);
1195 if (qla2x00_mem_alloc(ha
)) {
1196 qla_printk(KERN_WARNING
, ha
,
1197 "[ERROR] Failed to allocate memory for adapter\n");
1199 goto probe_alloc_failed
;
1202 pci_set_drvdata(pdev
, ha
);
1203 host
->this_id
= 255;
1204 host
->cmd_per_lun
= 3;
1205 host
->unique_id
= ha
->instance
;
1206 host
->max_cmd_len
= MAX_CMDSZ
;
1207 host
->max_channel
= ha
->ports
- 1;
1208 host
->max_lun
= MAX_LUNS
;
1209 host
->transportt
= qla2xxx_transport_template
;
1210 if (scsi_add_host(host
, &pdev
->dev
))
1211 goto probe_alloc_failed
;
1213 qla2x00_alloc_sysfs_attr(ha
);
1215 if (qla2x00_initialize_adapter(ha
) &&
1216 !(ha
->device_flags
& DFLG_NO_CABLE
)) {
1218 qla_printk(KERN_WARNING
, ha
,
1219 "Failed to initialize adapter\n");
1221 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1222 "Adapter flags %x.\n",
1223 ha
->host_no
, ha
->device_flags
));
1228 qla2x00_init_host_attr(ha
);
1231 * Startup the kernel thread for this host adapter
1233 ha
->dpc_should_die
= 0;
1234 ha
->dpc_pid
= kernel_thread(qla2x00_do_dpc
, ha
, 0);
1235 if (ha
->dpc_pid
< 0) {
1236 qla_printk(KERN_WARNING
, ha
,
1237 "Unable to start DPC thread!\n");
1241 wait_for_completion(&ha
->dpc_inited
);
1243 if (IS_QLA2100(ha
) || IS_QLA2200(ha
))
1244 ret
= request_irq(host
->irq
, qla2100_intr_handler
,
1245 SA_INTERRUPT
|SA_SHIRQ
, ha
->brd_info
->drv_name
, ha
);
1247 ret
= request_irq(host
->irq
, qla2300_intr_handler
,
1248 SA_INTERRUPT
|SA_SHIRQ
, ha
->brd_info
->drv_name
, ha
);
1250 qla_printk(KERN_WARNING
, ha
,
1251 "Failed to reserve interrupt %d already in use.\n",
1256 /* Initialized the timer */
1257 qla2x00_start_timer(ha
, qla2x00_timer
, WATCH_INTERVAL
);
1259 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1264 /* Disable ISP interrupts. */
1265 qla2x00_disable_intrs(ha
);
1267 /* Ensure mailbox registers are free. */
1268 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1269 WRT_REG_WORD(®
->semaphore
, 0);
1270 WRT_REG_WORD(®
->hccr
, HCCR_CLR_RISC_INT
);
1271 WRT_REG_WORD(®
->hccr
, HCCR_CLR_HOST_INT
);
1273 /* Enable proper parity */
1274 if (!IS_QLA2100(ha
) && !IS_QLA2200(ha
)) {
1277 WRT_REG_WORD(®
->hccr
, (HCCR_ENABLE_PARITY
+ 0x1));
1279 /* SRAM, Instruction RAM and GP RAM parity */
1280 WRT_REG_WORD(®
->hccr
, (HCCR_ENABLE_PARITY
+ 0x7));
1282 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1284 /* Enable chip interrupts. */
1285 qla2x00_enable_intrs(ha
);
1289 * Wait around max loop_reset_delay secs for the devices to come
1290 * on-line. We don't want Linux scanning before we are ready.
1293 for (wait_switch
= jiffies
+ (ha
->loop_reset_delay
* HZ
);
1294 time_before(jiffies
,wait_switch
) &&
1295 !(ha
->device_flags
& (DFLG_NO_CABLE
| DFLG_FABRIC_DEVICES
))
1296 && (ha
->device_flags
& SWITCH_FOUND
) ;) {
1298 qla2x00_check_fabric_devices(ha
);
1303 ha
->flags
.init_done
= 1;
1306 qla_printk(KERN_INFO
, ha
, "\n"
1307 " QLogic Fibre Channel HBA Driver: %s\n"
1309 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str
,
1310 ha
->model_number
, ha
->model_desc
? ha
->model_desc
: "",
1311 ha
->brd_info
->isp_name
, qla2x00_get_pci_info_str(ha
, pci_info
),
1312 pci_name(ha
->pdev
), ha
->flags
.enable_64bit_addressing
? '+': '-',
1313 ha
->host_no
, qla2x00_get_fw_version_str(ha
, fw_str
));
1315 /* Go with fc_rport registration. */
1316 list_for_each_entry(fcport
, &ha
->fcports
, list
)
1317 qla2x00_reg_remote_port(ha
, fcport
);
1322 fc_remove_host(ha
->host
);
1324 scsi_remove_host(host
);
1327 qla2x00_free_device(ha
);
1329 scsi_host_put(host
);
1331 probe_disable_device
:
1332 pci_disable_device(pdev
);
1336 EXPORT_SYMBOL_GPL(qla2x00_probe_one
);
1338 void qla2x00_remove_one(struct pci_dev
*pdev
)
1340 scsi_qla_host_t
*ha
;
1342 ha
= pci_get_drvdata(pdev
);
1344 qla2x00_free_sysfs_attr(ha
);
1346 fc_remove_host(ha
->host
);
1348 scsi_remove_host(ha
->host
);
1350 qla2x00_free_device(ha
);
1352 scsi_host_put(ha
->host
);
1354 pci_set_drvdata(pdev
, NULL
);
1356 EXPORT_SYMBOL_GPL(qla2x00_remove_one
);
1359 qla2x00_free_device(scsi_qla_host_t
*ha
)
1363 /* Abort any outstanding IO descriptors. */
1364 if (!IS_QLA2100(ha
) && !IS_QLA2200(ha
))
1365 qla2x00_cancel_io_descriptors(ha
);
1367 /* turn-off interrupts on the card */
1368 if (ha
->interrupts_on
)
1369 qla2x00_disable_intrs(ha
);
1372 if (ha
->timer_active
)
1373 qla2x00_stop_timer(ha
);
1375 /* Kill the kernel thread for this host */
1376 if (ha
->dpc_pid
>= 0) {
1377 ha
->dpc_should_die
= 1;
1379 ret
= kill_proc(ha
->dpc_pid
, SIGHUP
, 1);
1381 qla_printk(KERN_ERR
, ha
,
1382 "Unable to signal DPC thread -- (%d)\n", ret
);
1384 /* TODO: SOMETHING MORE??? */
1386 wait_for_completion(&ha
->dpc_exited
);
1390 qla2x00_mem_free(ha
);
1393 ha
->flags
.online
= 0;
1395 /* Detach interrupts */
1397 free_irq(ha
->pdev
->irq
, ha
);
1399 /* release io space registers */
1401 iounmap(ha
->iobase
);
1402 pci_release_regions(ha
->pdev
);
1404 pci_disable_device(ha
->pdev
);
1408 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1410 * Input: ha = adapter block pointer. fcport = port structure pointer.
1416 void qla2x00_mark_device_lost(scsi_qla_host_t
*ha
, fc_port_t
*fcport
,
1419 if (atomic_read(&fcport
->state
) == FCS_ONLINE
&& fcport
->rport
)
1420 fc_remote_port_block(fcport
->rport
);
1422 * We may need to retry the login, so don't change the state of the
1423 * port but do the retries.
1425 if (atomic_read(&fcport
->state
) != FCS_DEVICE_DEAD
)
1426 atomic_set(&fcport
->state
, FCS_DEVICE_LOST
);
1431 if (fcport
->login_retry
== 0) {
1432 fcport
->login_retry
= ha
->login_retry_count
;
1433 set_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
);
1435 DEBUG(printk("scsi(%ld): Port login retry: "
1436 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1437 "id = 0x%04x retry cnt=%d\n",
1439 fcport
->port_name
[0],
1440 fcport
->port_name
[1],
1441 fcport
->port_name
[2],
1442 fcport
->port_name
[3],
1443 fcport
->port_name
[4],
1444 fcport
->port_name
[5],
1445 fcport
->port_name
[6],
1446 fcport
->port_name
[7],
1448 fcport
->login_retry
));
1453 * qla2x00_mark_all_devices_lost
1454 * Updates fcport state when device goes offline.
1457 * ha = adapter block pointer.
1458 * fcport = port structure pointer.
1466 qla2x00_mark_all_devices_lost(scsi_qla_host_t
*ha
)
1470 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
1471 if (fcport
->port_type
!= FCT_TARGET
)
1475 * No point in marking the device as lost, if the device is
1478 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
)
1480 if (atomic_read(&fcport
->state
) == FCS_ONLINE
&& fcport
->rport
)
1481 fc_remote_port_block(fcport
->rport
);
1482 atomic_set(&fcport
->state
, FCS_DEVICE_LOST
);
1488 * Allocates adapter memory.
1495 qla2x00_mem_alloc(scsi_qla_host_t
*ha
)
1503 * This will loop only once if everything goes well, else some
1504 * number of retries will be performed to get around a kernel
1505 * bug where available mem is not allocated until after a
1506 * little delay and a retry.
1508 ha
->request_ring
= dma_alloc_coherent(&ha
->pdev
->dev
,
1509 (ha
->request_q_length
+ 1) * sizeof(request_t
),
1510 &ha
->request_dma
, GFP_KERNEL
);
1511 if (ha
->request_ring
== NULL
) {
1512 qla_printk(KERN_WARNING
, ha
,
1513 "Memory Allocation failed - request_ring\n");
1515 qla2x00_mem_free(ha
);
1521 ha
->response_ring
= dma_alloc_coherent(&ha
->pdev
->dev
,
1522 (ha
->response_q_length
+ 1) * sizeof(response_t
),
1523 &ha
->response_dma
, GFP_KERNEL
);
1524 if (ha
->response_ring
== NULL
) {
1525 qla_printk(KERN_WARNING
, ha
,
1526 "Memory Allocation failed - response_ring\n");
1528 qla2x00_mem_free(ha
);
1534 ha
->gid_list
= dma_alloc_coherent(&ha
->pdev
->dev
, GID_LIST_SIZE
,
1535 &ha
->gid_list_dma
, GFP_KERNEL
);
1536 if (ha
->gid_list
== NULL
) {
1537 qla_printk(KERN_WARNING
, ha
,
1538 "Memory Allocation failed - gid_list\n");
1540 qla2x00_mem_free(ha
);
1546 ha
->rlc_rsp
= dma_alloc_coherent(&ha
->pdev
->dev
,
1547 sizeof(rpt_lun_cmd_rsp_t
), &ha
->rlc_rsp_dma
, GFP_KERNEL
);
1548 if (ha
->rlc_rsp
== NULL
) {
1549 qla_printk(KERN_WARNING
, ha
,
1550 "Memory Allocation failed - rlc");
1552 qla2x00_mem_free(ha
);
1558 snprintf(name
, sizeof(name
), "qla2xxx_%ld", ha
->host_no
);
1559 ha
->s_dma_pool
= dma_pool_create(name
, &ha
->pdev
->dev
,
1560 DMA_POOL_SIZE
, 8, 0);
1561 if (ha
->s_dma_pool
== NULL
) {
1562 qla_printk(KERN_WARNING
, ha
,
1563 "Memory Allocation failed - s_dma_pool\n");
1565 qla2x00_mem_free(ha
);
1571 /* get consistent memory allocated for init control block */
1572 ha
->init_cb
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
1574 if (ha
->init_cb
== NULL
) {
1575 qla_printk(KERN_WARNING
, ha
,
1576 "Memory Allocation failed - init_cb\n");
1578 qla2x00_mem_free(ha
);
1583 memset(ha
->init_cb
, 0, sizeof(init_cb_t
));
1585 /* Get consistent memory allocated for Get Port Database cmd */
1586 ha
->iodesc_pd
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
1587 &ha
->iodesc_pd_dma
);
1588 if (ha
->iodesc_pd
== NULL
) {
1590 qla_printk(KERN_WARNING
, ha
,
1591 "Memory Allocation failed - iodesc_pd\n");
1593 qla2x00_mem_free(ha
);
1598 memset(ha
->iodesc_pd
, 0, PORT_DATABASE_SIZE
);
1600 /* Allocate ioctl related memory. */
1601 if (qla2x00_alloc_ioctl_mem(ha
)) {
1602 qla_printk(KERN_WARNING
, ha
,
1603 "Memory Allocation failed - ioctl_mem\n");
1605 qla2x00_mem_free(ha
);
1611 if (qla2x00_allocate_sp_pool(ha
)) {
1612 qla_printk(KERN_WARNING
, ha
,
1613 "Memory Allocation failed - "
1614 "qla2x00_allocate_sp_pool()\n");
1616 qla2x00_mem_free(ha
);
1622 /* Allocate memory for SNS commands */
1623 if (IS_QLA2100(ha
) || IS_QLA2200(ha
)) {
1624 /* Get consistent memory allocated for SNS commands */
1625 ha
->sns_cmd
= dma_alloc_coherent(&ha
->pdev
->dev
,
1626 sizeof(struct sns_cmd_pkt
), &ha
->sns_cmd_dma
,
1628 if (ha
->sns_cmd
== NULL
) {
1630 qla_printk(KERN_WARNING
, ha
,
1631 "Memory Allocation failed - sns_cmd\n");
1633 qla2x00_mem_free(ha
);
1638 memset(ha
->sns_cmd
, 0, sizeof(struct sns_cmd_pkt
));
1640 /* Get consistent memory allocated for MS IOCB */
1641 ha
->ms_iocb
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
1643 if (ha
->ms_iocb
== NULL
) {
1645 qla_printk(KERN_WARNING
, ha
,
1646 "Memory Allocation failed - ms_iocb\n");
1648 qla2x00_mem_free(ha
);
1653 memset(ha
->ms_iocb
, 0, sizeof(ms_iocb_entry_t
));
1656 * Get consistent memory allocated for CT SNS
1659 ha
->ct_sns
= dma_alloc_coherent(&ha
->pdev
->dev
,
1660 sizeof(struct ct_sns_pkt
), &ha
->ct_sns_dma
,
1662 if (ha
->ct_sns
== NULL
) {
1664 qla_printk(KERN_WARNING
, ha
,
1665 "Memory Allocation failed - ct_sns\n");
1667 qla2x00_mem_free(ha
);
1672 memset(ha
->ct_sns
, 0, sizeof(struct ct_sns_pkt
));
1675 /* Done all allocations without any error. */
1678 } while (retry
-- && status
!= 0);
1682 "%s(): **** FAILED ****\n", __func__
);
1690 * Frees all adapter allocated memory.
1693 * ha = adapter block pointer.
1696 qla2x00_mem_free(scsi_qla_host_t
*ha
)
1698 struct list_head
*fcpl
, *fcptemp
;
1700 unsigned long wtime
;/* max wait time if mbx cmd is busy. */
1704 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__
));
1708 /* Make sure all other threads are stopped. */
1710 while (ha
->dpc_wait
&& wtime
) {
1711 set_current_state(TASK_INTERRUPTIBLE
);
1712 wtime
= schedule_timeout(wtime
);
1715 /* free ioctl memory */
1716 qla2x00_free_ioctl_mem(ha
);
1719 qla2x00_free_sp_pool(ha
);
1722 dma_free_coherent(&ha
->pdev
->dev
, sizeof(struct sns_cmd_pkt
),
1723 ha
->sns_cmd
, ha
->sns_cmd_dma
);
1726 dma_free_coherent(&ha
->pdev
->dev
, sizeof(struct ct_sns_pkt
),
1727 ha
->ct_sns
, ha
->ct_sns_dma
);
1730 dma_pool_free(ha
->s_dma_pool
, ha
->ms_iocb
, ha
->ms_iocb_dma
);
1733 dma_pool_free(ha
->s_dma_pool
, ha
->iodesc_pd
, ha
->iodesc_pd_dma
);
1736 dma_pool_free(ha
->s_dma_pool
, ha
->init_cb
, ha
->init_cb_dma
);
1739 dma_pool_destroy(ha
->s_dma_pool
);
1742 dma_free_coherent(&ha
->pdev
->dev
,
1743 sizeof(rpt_lun_cmd_rsp_t
), ha
->rlc_rsp
,
1747 dma_free_coherent(&ha
->pdev
->dev
, GID_LIST_SIZE
, ha
->gid_list
,
1750 if (ha
->response_ring
)
1751 dma_free_coherent(&ha
->pdev
->dev
,
1752 (ha
->response_q_length
+ 1) * sizeof(response_t
),
1753 ha
->response_ring
, ha
->response_dma
);
1755 if (ha
->request_ring
)
1756 dma_free_coherent(&ha
->pdev
->dev
,
1757 (ha
->request_q_length
+ 1) * sizeof(request_t
),
1758 ha
->request_ring
, ha
->request_dma
);
1761 ha
->sns_cmd_dma
= 0;
1765 ha
->ms_iocb_dma
= 0;
1766 ha
->iodesc_pd
= NULL
;
1767 ha
->iodesc_pd_dma
= 0;
1769 ha
->init_cb_dma
= 0;
1771 ha
->s_dma_pool
= NULL
;
1774 ha
->rlc_rsp_dma
= 0;
1775 ha
->gid_list
= NULL
;
1776 ha
->gid_list_dma
= 0;
1778 ha
->response_ring
= NULL
;
1779 ha
->response_dma
= 0;
1780 ha
->request_ring
= NULL
;
1781 ha
->request_dma
= 0;
1783 list_for_each_safe(fcpl
, fcptemp
, &ha
->fcports
) {
1784 fcport
= list_entry(fcpl
, fc_port_t
, list
);
1787 list_del_init(&fcport
->list
);
1790 INIT_LIST_HEAD(&ha
->fcports
);
1793 free_pages((unsigned long)ha
->fw_dump
, ha
->fw_dump_order
);
1795 if (ha
->fw_dump_buffer
)
1796 vfree(ha
->fw_dump_buffer
);
1799 ha
->fw_dump_reading
= 0;
1800 ha
->fw_dump_buffer
= NULL
;
1804 * qla2x00_allocate_sp_pool
1805 * This routine is called during initialization to allocate
1806 * memory for local srb_t.
1809 * ha = adapter block pointer.
1814 * Note: Sets the ref_count for non Null sp to one.
1817 qla2x00_allocate_sp_pool(scsi_qla_host_t
*ha
)
1822 ha
->srb_mempool
= mempool_create(SRB_MIN_REQ
, mempool_alloc_slab
,
1823 mempool_free_slab
, srb_cachep
);
1824 if (ha
->srb_mempool
== NULL
) {
1825 qla_printk(KERN_INFO
, ha
, "Unable to allocate SRB mempool.\n");
1826 rval
= QLA_FUNCTION_FAILED
;
1832 * This routine frees all adapter allocated memory.
1836 qla2x00_free_sp_pool( scsi_qla_host_t
*ha
)
1838 if (ha
->srb_mempool
) {
1839 mempool_destroy(ha
->srb_mempool
);
1840 ha
->srb_mempool
= NULL
;
1844 /**************************************************************************
1846 * This kernel thread is a task that is schedule by the interrupt handler
1847 * to perform the background processing for interrupts.
1850 * This task always run in the context of a kernel thread. It
1851 * is kick-off by the driver's detect code and starts up
1852 * up one per adapter. It immediately goes to sleep and waits for
1853 * some fibre event. When either the interrupt handler or
1854 * the timer routine detects a event it will one of the task
1855 * bits then wake us up.
1856 **************************************************************************/
1858 qla2x00_do_dpc(void *data
)
1860 DECLARE_MUTEX_LOCKED(sem
);
1861 scsi_qla_host_t
*ha
;
1864 uint16_t next_loopid
;
1866 ha
= (scsi_qla_host_t
*)data
;
1870 daemonize("%s_dpc", ha
->host_str
);
1871 allow_signal(SIGHUP
);
1873 ha
->dpc_wait
= &sem
;
1875 set_user_nice(current
, -20);
1879 complete(&ha
->dpc_inited
);
1882 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
1884 if (down_interruptible(&sem
))
1887 if (ha
->dpc_should_die
)
1890 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
1892 /* Initialization not yet finished. Don't do anything yet. */
1893 if (!ha
->flags
.init_done
|| ha
->dpc_active
)
1896 DEBUG3(printk("scsi(%ld): DPC handler\n", ha
->host_no
));
1900 if (ha
->flags
.mbox_busy
) {
1905 if (test_and_clear_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
)) {
1907 DEBUG(printk("scsi(%ld): dpc: sched "
1908 "qla2x00_abort_isp ha = %p\n",
1910 if (!(test_and_set_bit(ABORT_ISP_ACTIVE
,
1913 if (qla2x00_abort_isp(ha
)) {
1914 /* failed. retry later */
1915 set_bit(ISP_ABORT_NEEDED
,
1918 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
1920 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
1924 if (test_and_clear_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
) &&
1925 (!(test_and_set_bit(RESET_ACTIVE
, &ha
->dpc_flags
)))) {
1927 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
1930 qla2x00_rst_aen(ha
);
1931 clear_bit(RESET_ACTIVE
, &ha
->dpc_flags
);
1934 /* Retry each device up to login retry count */
1935 if ((test_and_clear_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
)) &&
1936 !test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
) &&
1937 atomic_read(&ha
->loop_state
) != LOOP_DOWN
) {
1939 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
1943 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
1944 if (fcport
->port_type
!= FCT_TARGET
)
1948 * If the port is not ONLINE then try to login
1949 * to it if we haven't run out of retries.
1951 if (atomic_read(&fcport
->state
) != FCS_ONLINE
&&
1952 fcport
->login_retry
) {
1954 fcport
->login_retry
--;
1955 if (fcport
->flags
& FCF_FABRIC_DEVICE
) {
1958 qla2x00_fabric_logout(
1961 status
= qla2x00_fabric_login(
1962 ha
, fcport
, &next_loopid
);
1965 qla2x00_local_device_login(
1966 ha
, fcport
->loop_id
);
1968 if (status
== QLA_SUCCESS
) {
1969 fcport
->old_loop_id
= fcport
->loop_id
;
1971 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
1972 ha
->host_no
, fcport
->loop_id
));
1974 fcport
->port_login_retry_count
=
1975 ha
->port_down_retry_count
* PORT_RETRY_TIME
;
1976 atomic_set(&fcport
->state
, FCS_ONLINE
);
1977 atomic_set(&fcport
->port_down_timer
,
1978 ha
->port_down_retry_count
* PORT_RETRY_TIME
);
1980 fcport
->login_retry
= 0;
1981 } else if (status
== 1) {
1982 set_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
);
1983 /* retry the login again */
1984 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
1986 fcport
->login_retry
, fcport
->loop_id
));
1988 fcport
->login_retry
= 0;
1991 if (test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
))
1994 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
1998 if ((test_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
)) &&
1999 atomic_read(&ha
->loop_state
) != LOOP_DOWN
) {
2001 clear_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
);
2002 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2005 set_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
);
2007 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2011 if (test_and_clear_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
)) {
2013 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2016 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE
,
2019 qla2x00_loop_resync(ha
);
2021 clear_bit(LOOP_RESYNC_ACTIVE
, &ha
->dpc_flags
);
2024 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2028 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED
, &ha
->dpc_flags
)) {
2030 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2033 qla2x00_rescan_fcports(ha
);
2035 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2040 if (!ha
->interrupts_on
)
2041 qla2x00_enable_intrs(ha
);
2044 } /* End of while(1) */
2046 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha
->host_no
));
2049 * Make sure that nobody tries to wake us up again.
2051 ha
->dpc_wait
= NULL
;
2054 complete_and_exit(&ha
->dpc_exited
, 0);
2059 * Processes asynchronous reset.
2062 * ha = adapter block pointer.
2065 qla2x00_rst_aen(scsi_qla_host_t
*ha
)
2067 if (ha
->flags
.online
&& !ha
->flags
.reset_active
&&
2068 !atomic_read(&ha
->loop_down_timer
) &&
2069 !(test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
))) {
2071 clear_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
);
2074 * Issue marker command only when we are going to start
2077 ha
->marker_needed
= 1;
2078 } while (!atomic_read(&ha
->loop_down_timer
) &&
2079 (test_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
)));
2085 * This routine will allocate SP from the free queue
2092 qla2x00_get_new_sp(scsi_qla_host_t
*ha
)
2096 sp
= mempool_alloc(ha
->srb_mempool
, GFP_ATOMIC
);
2098 atomic_set(&sp
->ref_count
, 1);
2103 qla2x00_sp_free_dma(scsi_qla_host_t
*ha
, srb_t
*sp
)
2105 struct scsi_cmnd
*cmd
= sp
->cmd
;
2107 if (sp
->flags
& SRB_DMA_VALID
) {
2109 dma_unmap_sg(&ha
->pdev
->dev
, cmd
->request_buffer
,
2110 cmd
->use_sg
, cmd
->sc_data_direction
);
2111 } else if (cmd
->request_bufflen
) {
2112 dma_unmap_single(&ha
->pdev
->dev
, sp
->dma_handle
,
2113 cmd
->request_bufflen
, cmd
->sc_data_direction
);
2115 sp
->flags
&= ~SRB_DMA_VALID
;
2120 qla2x00_sp_compl(scsi_qla_host_t
*ha
, srb_t
*sp
)
2122 struct scsi_cmnd
*cmd
= sp
->cmd
;
2124 qla2x00_sp_free_dma(ha
, sp
);
2127 mempool_free(sp
, ha
->srb_mempool
);
2129 cmd
->scsi_done(cmd
);
2132 /**************************************************************************
2138 * Context: Interrupt
2139 ***************************************************************************/
2141 qla2x00_timer(scsi_qla_host_t
*ha
)
2143 unsigned long cpu_flags
= 0;
2151 * Ports - Port down timer.
2153 * Whenever, a port is in the LOST state we start decrementing its port
2154 * down timer every second until it reaches zero. Once it reaches zero
2155 * the port it marked DEAD.
2158 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
2159 if (fcport
->port_type
!= FCT_TARGET
)
2162 if (atomic_read(&fcport
->state
) == FCS_DEVICE_LOST
) {
2164 if (atomic_read(&fcport
->port_down_timer
) == 0)
2167 if (atomic_dec_and_test(&fcport
->port_down_timer
) != 0)
2168 atomic_set(&fcport
->state
, FCS_DEVICE_DEAD
);
2170 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2173 t
, atomic_read(&fcport
->port_down_timer
)));
2176 } /* End of for fcport */
2179 /* Loop down handler. */
2180 if (atomic_read(&ha
->loop_down_timer
) > 0 &&
2181 !(test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
)) && ha
->flags
.online
) {
2183 if (atomic_read(&ha
->loop_down_timer
) ==
2184 ha
->loop_down_abort_time
) {
2186 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2187 "queues before time expire\n",
2190 if (!IS_QLA2100(ha
) && ha
->link_down_timeout
)
2191 atomic_set(&ha
->loop_state
, LOOP_DEAD
);
2193 /* Schedule an ISP abort to return any tape commands. */
2194 spin_lock_irqsave(&ha
->hardware_lock
, cpu_flags
);
2195 for (index
= 1; index
< MAX_OUTSTANDING_COMMANDS
;
2199 sp
= ha
->outstanding_cmds
[index
];
2203 if (!(sfcp
->flags
& FCF_TAPE_PRESENT
))
2206 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
2209 spin_unlock_irqrestore(&ha
->hardware_lock
, cpu_flags
);
2211 set_bit(ABORT_QUEUES_NEEDED
, &ha
->dpc_flags
);
2215 /* if the loop has been down for 4 minutes, reinit adapter */
2216 if (atomic_dec_and_test(&ha
->loop_down_timer
) != 0) {
2217 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2218 "restarting queues.\n",
2221 set_bit(RESTART_QUEUES_NEEDED
, &ha
->dpc_flags
);
2224 if (!(ha
->device_flags
& DFLG_NO_CABLE
)) {
2225 DEBUG(printk("scsi(%ld): Loop down - "
2228 qla_printk(KERN_WARNING
, ha
,
2229 "Loop down - aborting ISP.\n");
2231 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
2234 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2236 atomic_read(&ha
->loop_down_timer
)));
2239 /* Schedule the DPC routine if needed */
2240 if ((test_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
) ||
2241 test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
) ||
2243 test_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
) ||
2244 test_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
) ||
2245 test_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
)) &&
2246 ha
->dpc_wait
&& !ha
->dpc_active
) {
2251 qla2x00_restart_timer(ha
, WATCH_INTERVAL
);
2254 /* XXX(hch): crude hack to emulate a down_timeout() */
2256 qla2x00_down_timeout(struct semaphore
*sema
, unsigned long timeout
)
2258 const unsigned int step
= HZ
/10;
2261 if (!down_trylock(sema
))
2263 set_current_state(TASK_INTERRUPTIBLE
);
2264 if (schedule_timeout(step
))
2266 } while ((timeout
-= step
) > 0);
2272 * qla2x00_module_init - Module initialization.
2275 qla2x00_module_init(void)
2277 /* Allocate cache for SRBs. */
2278 srb_cachep
= kmem_cache_create("qla2xxx_srbs", sizeof(srb_t
), 0,
2279 SLAB_HWCACHE_ALIGN
, NULL
, NULL
);
2280 if (srb_cachep
== NULL
) {
2282 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2286 /* Derive version string. */
2287 strcpy(qla2x00_version_str
, QLA2XXX_VERSION
);
2289 strcat(qla2x00_version_str
, "-debug");
2291 qla2xxx_transport_template
=
2292 fc_attach_transport(&qla2xxx_transport_functions
);
2293 if (!qla2xxx_transport_template
)
2296 printk(KERN_INFO
"QLogic Fibre Channel HBA Driver\n");
2301 * qla2x00_module_exit - Module cleanup.
2304 qla2x00_module_exit(void)
2306 kmem_cache_destroy(srb_cachep
);
2307 fc_release_transport(qla2xxx_transport_template
);
2310 module_init(qla2x00_module_init
);
2311 module_exit(qla2x00_module_exit
);
2313 MODULE_AUTHOR("QLogic Corporation");
2314 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2315 MODULE_LICENSE("GPL");
2316 MODULE_VERSION(QLA2XXX_VERSION
);