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_unlock_irq(ha
->host
->host_lock
);
480 spin_lock(&ha
->hardware_lock
);
481 for (i
= 1; i
< MAX_OUTSTANDING_COMMANDS
; i
++) {
482 sp
= ha
->outstanding_cmds
[i
];
490 DEBUG2(printk("%s(%ld): aborting sp %p from RISC. pid=%ld "
491 "sp->state=%x\n", __func__
, ha
->host_no
, sp
, serial
,
493 DEBUG3(qla2x00_print_scsi_cmd(cmd
);)
495 spin_unlock(&ha
->hardware_lock
);
496 if (qla2x00_abort_command(ha
, sp
)) {
497 DEBUG2(printk("%s(%ld): abort_command "
498 "mbx failed.\n", __func__
, ha
->host_no
));
500 DEBUG3(printk("%s(%ld): abort_command "
501 "mbx success.\n", __func__
, ha
->host_no
));
504 spin_lock(&ha
->hardware_lock
);
509 /* Wait for the command to be returned. */
510 if (ret
== SUCCESS
) {
511 spin_unlock(&ha
->hardware_lock
);
512 if (qla2x00_eh_wait_on_command(ha
, cmd
) != QLA_SUCCESS
) {
513 qla_printk(KERN_ERR
, ha
,
514 "scsi(%ld:%d:%d): Abort handler timed out -- %lx "
515 "%x.\n", ha
->host_no
, id
, lun
, serial
, ret
);
517 spin_lock(&ha
->hardware_lock
);
519 spin_lock_irq(ha
->host
->host_lock
);
521 qla_printk(KERN_INFO
, ha
,
522 "scsi(%ld:%d:%d): Abort command issued -- %lx %x.\n", ha
->host_no
,
523 id
, lun
, serial
, ret
);
528 /**************************************************************************
529 * qla2x00_eh_wait_for_pending_target_commands
532 * Waits for all the commands to come back from the specified target.
535 * ha - pointer to scsi_qla_host structure.
538 * Either SUCCESS or FAILED.
541 **************************************************************************/
543 qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t
*ha
, unsigned int t
)
548 struct scsi_cmnd
*cmd
;
553 * Waiting for all commands for the designated target in the active
556 for (cnt
= 1; cnt
< MAX_OUTSTANDING_COMMANDS
; cnt
++) {
557 spin_lock(&ha
->hardware_lock
);
558 sp
= ha
->outstanding_cmds
[cnt
];
561 spin_unlock(&ha
->hardware_lock
);
562 if (cmd
->device
->id
== t
) {
563 if (!qla2x00_eh_wait_on_command(ha
, cmd
)) {
569 spin_unlock(&ha
->hardware_lock
);
576 /**************************************************************************
577 * qla2xxx_eh_device_reset
580 * The device reset function will reset the target and abort any
581 * executing commands.
583 * NOTE: The use of SP is undefined within this context. Do *NOT*
584 * attempt to use this value, even if you determine it is
588 * cmd = Linux SCSI command packet of the command that cause the
592 * SUCCESS/FAILURE (defined as macro in scsi.h).
594 **************************************************************************/
596 qla2xxx_eh_device_reset(struct scsi_cmnd
*cmd
)
598 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
599 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
602 unsigned int id
, lun
;
603 unsigned long serial
;
607 id
= cmd
->device
->id
;
608 lun
= cmd
->device
->lun
;
609 serial
= cmd
->serial_number
;
611 sp
= (srb_t
*) CMD_SP(cmd
);
615 qla_printk(KERN_INFO
, ha
,
616 "scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha
->host_no
, id
, lun
);
618 spin_unlock_irq(ha
->host
->host_lock
);
620 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
621 spin_lock_irq(ha
->host
->host_lock
);
622 goto eh_dev_reset_done
;
625 if (qla2x00_wait_for_loop_ready(ha
) == QLA_SUCCESS
) {
626 if (qla2x00_device_reset(ha
, fcport
) == 0)
629 #if defined(LOGOUT_AFTER_DEVICE_RESET)
630 if (ret
== SUCCESS
) {
631 if (fcport
->flags
& FC_FABRIC_DEVICE
) {
632 qla2x00_fabric_logout(ha
, fcport
->loop_id
);
633 qla2x00_mark_device_lost(ha
, fcport
);
638 DEBUG2(printk(KERN_INFO
639 "%s failed: loop not ready\n",__func__
);)
643 DEBUG3(printk("%s(%ld): device reset failed\n",
644 __func__
, ha
->host_no
));
645 qla_printk(KERN_INFO
, ha
, "%s: device reset failed\n",
648 goto eh_dev_reset_done
;
652 * If we are coming down the EH path, wait for all commands to
653 * complete for the device.
655 if (cmd
->device
->host
->eh_active
) {
656 if (qla2x00_eh_wait_for_pending_target_commands(ha
, id
))
660 DEBUG3(printk("%s(%ld): failed while waiting for "
661 "commands\n", __func__
, ha
->host_no
));
662 qla_printk(KERN_INFO
, ha
,
663 "%s: failed while waiting for commands\n",
666 goto eh_dev_reset_done
;
670 qla_printk(KERN_INFO
, ha
,
671 "scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha
->host_no
, id
, lun
);
674 spin_lock_irq(ha
->host
->host_lock
);
679 /**************************************************************************
680 * qla2x00_eh_wait_for_pending_commands
683 * Waits for all the commands to come back from the specified host.
686 * ha - pointer to scsi_qla_host structure.
693 **************************************************************************/
695 qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t
*ha
)
700 struct scsi_cmnd
*cmd
;
705 * Waiting for all commands for the designated target in the active
708 for (cnt
= 1; cnt
< MAX_OUTSTANDING_COMMANDS
; cnt
++) {
709 spin_lock(&ha
->hardware_lock
);
710 sp
= ha
->outstanding_cmds
[cnt
];
713 spin_unlock(&ha
->hardware_lock
);
714 status
= qla2x00_eh_wait_on_command(ha
, cmd
);
719 spin_unlock(&ha
->hardware_lock
);
726 /**************************************************************************
727 * qla2xxx_eh_bus_reset
730 * The bus reset function will reset the bus and abort any executing
734 * cmd = Linux SCSI command packet of the command that cause the
738 * SUCCESS/FAILURE (defined as macro in scsi.h).
740 **************************************************************************/
742 qla2xxx_eh_bus_reset(struct scsi_cmnd
*cmd
)
744 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
745 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
748 unsigned int id
, lun
;
749 unsigned long serial
;
753 id
= cmd
->device
->id
;
754 lun
= cmd
->device
->lun
;
755 serial
= cmd
->serial_number
;
757 sp
= (srb_t
*) CMD_SP(cmd
);
761 qla_printk(KERN_INFO
, ha
,
762 "scsi(%ld:%d:%d): LOOP RESET ISSUED.\n", ha
->host_no
, id
, lun
);
764 spin_unlock_irq(ha
->host
->host_lock
);
766 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
767 DEBUG2(printk("%s failed:board disabled\n",__func__
));
768 goto eh_bus_reset_done
;
771 if (qla2x00_wait_for_loop_ready(ha
) == QLA_SUCCESS
) {
772 if (qla2x00_loop_reset(ha
) == QLA_SUCCESS
)
776 goto eh_bus_reset_done
;
778 /* Waiting for our command in done_queue to be returned to OS.*/
779 if (cmd
->device
->host
->eh_active
)
780 if (!qla2x00_eh_wait_for_pending_commands(ha
))
784 qla_printk(KERN_INFO
, ha
, "%s: reset %s\n", __func__
,
785 (ret
== FAILED
) ? "failed" : "succeded");
787 spin_lock_irq(ha
->host
->host_lock
);
792 /**************************************************************************
793 * qla2xxx_eh_host_reset
796 * The reset function will reset the Adapter.
799 * cmd = Linux SCSI command packet of the command that cause the
803 * Either SUCCESS or FAILED.
806 **************************************************************************/
808 qla2xxx_eh_host_reset(struct scsi_cmnd
*cmd
)
810 scsi_qla_host_t
*ha
= to_qla_host(cmd
->device
->host
);
811 fc_port_t
*fcport
= (struct fc_port
*) cmd
->device
->hostdata
;
814 unsigned int id
, lun
;
815 unsigned long serial
;
819 id
= cmd
->device
->id
;
820 lun
= cmd
->device
->lun
;
821 serial
= cmd
->serial_number
;
823 sp
= (srb_t
*) CMD_SP(cmd
);
827 qla_printk(KERN_INFO
, ha
,
828 "scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", ha
->host_no
, id
, lun
);
830 spin_unlock_irq(ha
->host
->host_lock
);
832 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
833 goto eh_host_reset_lock
;
836 * Fixme-may be dpc thread is active and processing
837 * loop_resync,so wait a while for it to
838 * be completed and then issue big hammer.Otherwise
839 * it may cause I/O failure as big hammer marks the
840 * devices as lost kicking of the port_down_timer
841 * while dpc is stuck for the mailbox to complete.
843 qla2x00_wait_for_loop_ready(ha
);
844 set_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
845 if (qla2x00_abort_isp(ha
)) {
846 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
847 /* failed. schedule dpc to try */
848 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
850 if (qla2x00_wait_for_hba_online(ha
) != QLA_SUCCESS
)
851 goto eh_host_reset_lock
;
853 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
855 /* Waiting for our command in done_queue to be returned to OS.*/
856 if (qla2x00_eh_wait_for_pending_commands(ha
))
860 spin_lock_irq(ha
->host
->host_lock
);
862 qla_printk(KERN_INFO
, ha
, "%s: reset %s\n", __func__
,
863 (ret
== FAILED
) ? "failed" : "succeded");
873 * ha = adapter block pointer.
879 qla2x00_loop_reset(scsi_qla_host_t
*ha
)
881 int status
= QLA_SUCCESS
;
882 struct fc_port
*fcport
;
884 if (ha
->flags
.enable_lip_reset
) {
885 status
= qla2x00_lip_reset(ha
);
888 if (status
== QLA_SUCCESS
&& ha
->flags
.enable_target_reset
) {
889 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
890 if (fcport
->port_type
!= FCT_TARGET
)
893 status
= qla2x00_target_reset(ha
, fcport
);
894 if (status
!= QLA_SUCCESS
)
899 if (status
== QLA_SUCCESS
&&
900 ((!ha
->flags
.enable_target_reset
&&
901 !ha
->flags
.enable_lip_reset
) ||
902 ha
->flags
.enable_lip_full_login
)) {
904 status
= qla2x00_full_login_lip(ha
);
907 /* Issue marker command only when we are going to start the I/O */
908 ha
->marker_needed
= 1;
912 DEBUG2_3(printk("%s(%ld): **** FAILED ****\n",
917 DEBUG3(printk("%s(%ld): exiting normally.\n",
926 * qla2x00_device_reset
927 * Issue bus device reset message to the target.
930 * ha = adapter block pointer.
932 * TARGET_QUEUE_LOCK must be released.
933 * ADAPTER_STATE_LOCK must be released.
939 qla2x00_device_reset(scsi_qla_host_t
*ha
, fc_port_t
*reset_fcport
)
941 /* Abort Target command will clear Reservation */
942 return qla2x00_abort_target(reset_fcport
);
946 qla2xxx_slave_alloc(struct scsi_device
*sdev
)
948 scsi_qla_host_t
*ha
= to_qla_host(sdev
->host
);
949 struct fc_rport
*rport
= starget_to_rport(scsi_target(sdev
));
957 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
958 if (rport
->port_name
==
959 be64_to_cpu(*(uint64_t *)fcport
->port_name
)) {
967 sdev
->hostdata
= fcport
;
973 qla2xxx_slave_configure(struct scsi_device
*sdev
)
975 scsi_qla_host_t
*ha
= to_qla_host(sdev
->host
);
976 struct fc_rport
*rport
= starget_to_rport(sdev
->sdev_target
);
978 if (sdev
->tagged_supported
)
979 scsi_activate_tcq(sdev
, 32);
981 scsi_deactivate_tcq(sdev
, 32);
983 rport
->dev_loss_tmo
= ha
->port_down_retry_count
+ 5;
989 qla2xxx_slave_destroy(struct scsi_device
*sdev
)
991 sdev
->hostdata
= NULL
;
995 * qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
998 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
999 * supported addressing method.
1002 qla2x00_config_dma_addressing(scsi_qla_host_t
*ha
)
1004 /* Assume 32bit DMA address */
1005 ha
->flags
.enable_64bit_addressing
= 0;
1006 ha
->calc_request_entries
= qla2x00_calc_iocbs_32
;
1007 ha
->build_scsi_iocbs
= qla2x00_build_scsi_iocbs_32
;
1010 * Given the two variants pci_set_dma_mask(), allow the compiler to
1011 * assist in setting the proper dma mask.
1013 if (sizeof(dma_addr_t
) > 4) {
1014 if (pci_set_dma_mask(ha
->pdev
, DMA_64BIT_MASK
) == 0) {
1015 ha
->flags
.enable_64bit_addressing
= 1;
1016 ha
->calc_request_entries
= qla2x00_calc_iocbs_64
;
1017 ha
->build_scsi_iocbs
= qla2x00_build_scsi_iocbs_64
;
1019 if (pci_set_consistent_dma_mask(ha
->pdev
,
1021 qla_printk(KERN_DEBUG
, ha
,
1022 "Failed to set 64 bit PCI consistent mask; "
1024 pci_set_consistent_dma_mask(ha
->pdev
,
1028 qla_printk(KERN_DEBUG
, ha
,
1029 "Failed to set 64 bit PCI DMA mask, falling back "
1030 "to 32 bit MASK.\n");
1031 pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1034 pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1039 qla2x00_iospace_config(scsi_qla_host_t
*ha
)
1041 unsigned long pio
, pio_len
, pio_flags
;
1042 unsigned long mmio
, mmio_len
, mmio_flags
;
1044 /* We only need PIO for Flash operations on ISP2312 v2 chips. */
1045 pio
= pci_resource_start(ha
->pdev
, 0);
1046 pio_len
= pci_resource_len(ha
->pdev
, 0);
1047 pio_flags
= pci_resource_flags(ha
->pdev
, 0);
1048 if (pio_flags
& IORESOURCE_IO
) {
1049 if (pio_len
< MIN_IOBASE_LEN
) {
1050 qla_printk(KERN_WARNING
, ha
,
1051 "Invalid PCI I/O region size (%s)...\n",
1052 pci_name(ha
->pdev
));
1056 qla_printk(KERN_WARNING
, ha
,
1057 "region #0 not a PIO resource (%s)...\n",
1058 pci_name(ha
->pdev
));
1062 /* Use MMIO operations for all accesses. */
1063 mmio
= pci_resource_start(ha
->pdev
, 1);
1064 mmio_len
= pci_resource_len(ha
->pdev
, 1);
1065 mmio_flags
= pci_resource_flags(ha
->pdev
, 1);
1067 if (!(mmio_flags
& IORESOURCE_MEM
)) {
1068 qla_printk(KERN_ERR
, ha
,
1069 "region #0 not an MMIO resource (%s), aborting\n",
1070 pci_name(ha
->pdev
));
1071 goto iospace_error_exit
;
1073 if (mmio_len
< MIN_IOBASE_LEN
) {
1074 qla_printk(KERN_ERR
, ha
,
1075 "Invalid PCI mem region size (%s), aborting\n",
1076 pci_name(ha
->pdev
));
1077 goto iospace_error_exit
;
1080 if (pci_request_regions(ha
->pdev
, ha
->brd_info
->drv_name
)) {
1081 qla_printk(KERN_WARNING
, ha
,
1082 "Failed to reserve PIO/MMIO regions (%s)\n",
1083 pci_name(ha
->pdev
));
1085 goto iospace_error_exit
;
1088 ha
->pio_address
= pio
;
1089 ha
->pio_length
= pio_len
;
1090 ha
->iobase
= ioremap(mmio
, MIN_IOBASE_LEN
);
1092 qla_printk(KERN_ERR
, ha
,
1093 "cannot remap MMIO (%s), aborting\n", pci_name(ha
->pdev
));
1095 goto iospace_error_exit
;
1105 * PCI driver interface
1107 int qla2x00_probe_one(struct pci_dev
*pdev
, struct qla_board_info
*brd_info
)
1110 device_reg_t __iomem
*reg
;
1111 struct Scsi_Host
*host
;
1112 scsi_qla_host_t
*ha
;
1113 unsigned long flags
= 0;
1114 unsigned long wait_switch
= 0;
1119 if (pci_enable_device(pdev
))
1122 host
= scsi_host_alloc(&qla2x00_driver_template
,
1123 sizeof(scsi_qla_host_t
));
1126 "qla2xxx: Couldn't allocate host from scsi layer!\n");
1127 goto probe_disable_device
;
1130 /* Clear our data area */
1131 ha
= (scsi_qla_host_t
*)host
->hostdata
;
1132 memset(ha
, 0, sizeof(scsi_qla_host_t
));
1136 ha
->host_no
= host
->host_no
;
1137 ha
->brd_info
= brd_info
;
1138 sprintf(ha
->host_str
, "%s_%ld", ha
->brd_info
->drv_name
, ha
->host_no
);
1140 /* Configure PCI I/O space */
1141 ret
= qla2x00_iospace_config(ha
);
1143 goto probe_alloc_failed
;
1146 /* Sanitize the information from PCI BIOS. */
1147 host
->irq
= pdev
->irq
;
1149 qla_printk(KERN_INFO
, ha
,
1150 "Found an %s, irq %d, iobase 0x%p\n", ha
->brd_info
->isp_name
,
1151 host
->irq
, ha
->iobase
);
1153 spin_lock_init(&ha
->hardware_lock
);
1155 ha
->prev_topology
= 0;
1156 ha
->ports
= MAX_BUSES
;
1158 if (IS_QLA2100(ha
)) {
1159 host
->max_id
= MAX_TARGETS_2100
;
1160 ha
->mbx_count
= MAILBOX_REGISTER_COUNT_2100
;
1161 ha
->request_q_length
= REQUEST_ENTRY_CNT_2100
;
1162 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2100
;
1163 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2100
;
1164 host
->sg_tablesize
= 32;
1165 } else if (IS_QLA2200(ha
)) {
1166 host
->max_id
= MAX_TARGETS_2200
;
1167 ha
->mbx_count
= MAILBOX_REGISTER_COUNT
;
1168 ha
->request_q_length
= REQUEST_ENTRY_CNT_2200
;
1169 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2100
;
1170 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2100
;
1171 } else /*if (IS_QLA2300(ha))*/ {
1172 host
->max_id
= MAX_TARGETS_2200
;
1173 ha
->mbx_count
= MAILBOX_REGISTER_COUNT
;
1174 ha
->request_q_length
= REQUEST_ENTRY_CNT_2200
;
1175 ha
->response_q_length
= RESPONSE_ENTRY_CNT_2300
;
1176 ha
->last_loop_id
= SNS_LAST_LOOP_ID_2300
;
1178 host
->can_queue
= ha
->request_q_length
+ 128;
1180 /* load the F/W, read paramaters, and init the H/W */
1181 ha
->instance
= num_hosts
;
1183 init_MUTEX(&ha
->mbx_cmd_sem
);
1184 init_MUTEX_LOCKED(&ha
->mbx_intr_sem
);
1186 INIT_LIST_HEAD(&ha
->list
);
1187 INIT_LIST_HEAD(&ha
->fcports
);
1188 INIT_LIST_HEAD(&ha
->rscn_fcports
);
1191 * These locks are used to prevent more than one CPU
1192 * from modifying the queue at the same time. The
1193 * higher level "host_lock" will reduce most
1194 * contention for these locks.
1196 spin_lock_init(&ha
->mbx_reg_lock
);
1199 init_completion(&ha
->dpc_inited
);
1200 init_completion(&ha
->dpc_exited
);
1202 qla2x00_config_dma_addressing(ha
);
1203 if (qla2x00_mem_alloc(ha
)) {
1204 qla_printk(KERN_WARNING
, ha
,
1205 "[ERROR] Failed to allocate memory for adapter\n");
1207 goto probe_alloc_failed
;
1210 pci_set_drvdata(pdev
, ha
);
1211 host
->this_id
= 255;
1212 host
->cmd_per_lun
= 3;
1213 host
->unique_id
= ha
->instance
;
1214 host
->max_cmd_len
= MAX_CMDSZ
;
1215 host
->max_channel
= ha
->ports
- 1;
1216 host
->max_lun
= MAX_LUNS
;
1217 host
->transportt
= qla2xxx_transport_template
;
1218 if (scsi_add_host(host
, &pdev
->dev
))
1219 goto probe_alloc_failed
;
1221 qla2x00_alloc_sysfs_attr(ha
);
1223 if (qla2x00_initialize_adapter(ha
) &&
1224 !(ha
->device_flags
& DFLG_NO_CABLE
)) {
1226 qla_printk(KERN_WARNING
, ha
,
1227 "Failed to initialize adapter\n");
1229 DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
1230 "Adapter flags %x.\n",
1231 ha
->host_no
, ha
->device_flags
));
1236 qla2x00_init_host_attr(ha
);
1239 * Startup the kernel thread for this host adapter
1241 ha
->dpc_should_die
= 0;
1242 ha
->dpc_pid
= kernel_thread(qla2x00_do_dpc
, ha
, 0);
1243 if (ha
->dpc_pid
< 0) {
1244 qla_printk(KERN_WARNING
, ha
,
1245 "Unable to start DPC thread!\n");
1249 wait_for_completion(&ha
->dpc_inited
);
1251 if (IS_QLA2100(ha
) || IS_QLA2200(ha
))
1252 ret
= request_irq(host
->irq
, qla2100_intr_handler
,
1253 SA_INTERRUPT
|SA_SHIRQ
, ha
->brd_info
->drv_name
, ha
);
1255 ret
= request_irq(host
->irq
, qla2300_intr_handler
,
1256 SA_INTERRUPT
|SA_SHIRQ
, ha
->brd_info
->drv_name
, ha
);
1258 qla_printk(KERN_WARNING
, ha
,
1259 "Failed to reserve interrupt %d already in use.\n",
1264 /* Initialized the timer */
1265 qla2x00_start_timer(ha
, qla2x00_timer
, WATCH_INTERVAL
);
1267 DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
1272 /* Disable ISP interrupts. */
1273 qla2x00_disable_intrs(ha
);
1275 /* Ensure mailbox registers are free. */
1276 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1277 WRT_REG_WORD(®
->semaphore
, 0);
1278 WRT_REG_WORD(®
->hccr
, HCCR_CLR_RISC_INT
);
1279 WRT_REG_WORD(®
->hccr
, HCCR_CLR_HOST_INT
);
1281 /* Enable proper parity */
1282 if (!IS_QLA2100(ha
) && !IS_QLA2200(ha
)) {
1285 WRT_REG_WORD(®
->hccr
, (HCCR_ENABLE_PARITY
+ 0x1));
1287 /* SRAM, Instruction RAM and GP RAM parity */
1288 WRT_REG_WORD(®
->hccr
, (HCCR_ENABLE_PARITY
+ 0x7));
1290 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1292 /* Enable chip interrupts. */
1293 qla2x00_enable_intrs(ha
);
1297 * Wait around max loop_reset_delay secs for the devices to come
1298 * on-line. We don't want Linux scanning before we are ready.
1301 for (wait_switch
= jiffies
+ (ha
->loop_reset_delay
* HZ
);
1302 time_before(jiffies
,wait_switch
) &&
1303 !(ha
->device_flags
& (DFLG_NO_CABLE
| DFLG_FABRIC_DEVICES
))
1304 && (ha
->device_flags
& SWITCH_FOUND
) ;) {
1306 qla2x00_check_fabric_devices(ha
);
1311 ha
->flags
.init_done
= 1;
1314 qla_printk(KERN_INFO
, ha
, "\n"
1315 " QLogic Fibre Channel HBA Driver: %s\n"
1317 " %s: %s @ %s hdma%c, host#=%ld, fw=%s\n", qla2x00_version_str
,
1318 ha
->model_number
, ha
->model_desc
? ha
->model_desc
: "",
1319 ha
->brd_info
->isp_name
, qla2x00_get_pci_info_str(ha
, pci_info
),
1320 pci_name(ha
->pdev
), ha
->flags
.enable_64bit_addressing
? '+': '-',
1321 ha
->host_no
, qla2x00_get_fw_version_str(ha
, fw_str
));
1323 /* Go with fc_rport registration. */
1324 list_for_each_entry(fcport
, &ha
->fcports
, list
)
1325 qla2x00_reg_remote_port(ha
, fcport
);
1330 fc_remove_host(ha
->host
);
1332 scsi_remove_host(host
);
1335 qla2x00_free_device(ha
);
1337 scsi_host_put(host
);
1339 probe_disable_device
:
1340 pci_disable_device(pdev
);
1344 EXPORT_SYMBOL_GPL(qla2x00_probe_one
);
1346 void qla2x00_remove_one(struct pci_dev
*pdev
)
1348 scsi_qla_host_t
*ha
;
1350 ha
= pci_get_drvdata(pdev
);
1352 qla2x00_free_sysfs_attr(ha
);
1354 fc_remove_host(ha
->host
);
1356 scsi_remove_host(ha
->host
);
1358 qla2x00_free_device(ha
);
1360 scsi_host_put(ha
->host
);
1362 pci_set_drvdata(pdev
, NULL
);
1364 EXPORT_SYMBOL_GPL(qla2x00_remove_one
);
1367 qla2x00_free_device(scsi_qla_host_t
*ha
)
1371 /* Abort any outstanding IO descriptors. */
1372 if (!IS_QLA2100(ha
) && !IS_QLA2200(ha
))
1373 qla2x00_cancel_io_descriptors(ha
);
1375 /* turn-off interrupts on the card */
1376 if (ha
->interrupts_on
)
1377 qla2x00_disable_intrs(ha
);
1380 if (ha
->timer_active
)
1381 qla2x00_stop_timer(ha
);
1383 /* Kill the kernel thread for this host */
1384 if (ha
->dpc_pid
>= 0) {
1385 ha
->dpc_should_die
= 1;
1387 ret
= kill_proc(ha
->dpc_pid
, SIGHUP
, 1);
1389 qla_printk(KERN_ERR
, ha
,
1390 "Unable to signal DPC thread -- (%d)\n", ret
);
1392 /* TODO: SOMETHING MORE??? */
1394 wait_for_completion(&ha
->dpc_exited
);
1398 qla2x00_mem_free(ha
);
1401 ha
->flags
.online
= 0;
1403 /* Detach interrupts */
1405 free_irq(ha
->pdev
->irq
, ha
);
1407 /* release io space registers */
1409 iounmap(ha
->iobase
);
1410 pci_release_regions(ha
->pdev
);
1412 pci_disable_device(ha
->pdev
);
1416 * qla2x00_mark_device_lost Updates fcport state when device goes offline.
1418 * Input: ha = adapter block pointer. fcport = port structure pointer.
1424 void qla2x00_mark_device_lost(scsi_qla_host_t
*ha
, fc_port_t
*fcport
,
1427 if (atomic_read(&fcport
->state
) == FCS_ONLINE
&& fcport
->rport
)
1428 fc_remote_port_block(fcport
->rport
);
1430 * We may need to retry the login, so don't change the state of the
1431 * port but do the retries.
1433 if (atomic_read(&fcport
->state
) != FCS_DEVICE_DEAD
)
1434 atomic_set(&fcport
->state
, FCS_DEVICE_LOST
);
1439 if (fcport
->login_retry
== 0) {
1440 fcport
->login_retry
= ha
->login_retry_count
;
1441 set_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
);
1443 DEBUG(printk("scsi(%ld): Port login retry: "
1444 "%02x%02x%02x%02x%02x%02x%02x%02x, "
1445 "id = 0x%04x retry cnt=%d\n",
1447 fcport
->port_name
[0],
1448 fcport
->port_name
[1],
1449 fcport
->port_name
[2],
1450 fcport
->port_name
[3],
1451 fcport
->port_name
[4],
1452 fcport
->port_name
[5],
1453 fcport
->port_name
[6],
1454 fcport
->port_name
[7],
1456 fcport
->login_retry
));
1461 * qla2x00_mark_all_devices_lost
1462 * Updates fcport state when device goes offline.
1465 * ha = adapter block pointer.
1466 * fcport = port structure pointer.
1474 qla2x00_mark_all_devices_lost(scsi_qla_host_t
*ha
)
1478 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
1479 if (fcport
->port_type
!= FCT_TARGET
)
1483 * No point in marking the device as lost, if the device is
1486 if (atomic_read(&fcport
->state
) == FCS_DEVICE_DEAD
)
1488 if (atomic_read(&fcport
->state
) == FCS_ONLINE
&& fcport
->rport
)
1489 fc_remote_port_block(fcport
->rport
);
1490 atomic_set(&fcport
->state
, FCS_DEVICE_LOST
);
1496 * Allocates adapter memory.
1503 qla2x00_mem_alloc(scsi_qla_host_t
*ha
)
1511 * This will loop only once if everything goes well, else some
1512 * number of retries will be performed to get around a kernel
1513 * bug where available mem is not allocated until after a
1514 * little delay and a retry.
1516 ha
->request_ring
= dma_alloc_coherent(&ha
->pdev
->dev
,
1517 (ha
->request_q_length
+ 1) * sizeof(request_t
),
1518 &ha
->request_dma
, GFP_KERNEL
);
1519 if (ha
->request_ring
== NULL
) {
1520 qla_printk(KERN_WARNING
, ha
,
1521 "Memory Allocation failed - request_ring\n");
1523 qla2x00_mem_free(ha
);
1529 ha
->response_ring
= dma_alloc_coherent(&ha
->pdev
->dev
,
1530 (ha
->response_q_length
+ 1) * sizeof(response_t
),
1531 &ha
->response_dma
, GFP_KERNEL
);
1532 if (ha
->response_ring
== NULL
) {
1533 qla_printk(KERN_WARNING
, ha
,
1534 "Memory Allocation failed - response_ring\n");
1536 qla2x00_mem_free(ha
);
1542 ha
->gid_list
= dma_alloc_coherent(&ha
->pdev
->dev
, GID_LIST_SIZE
,
1543 &ha
->gid_list_dma
, GFP_KERNEL
);
1544 if (ha
->gid_list
== NULL
) {
1545 qla_printk(KERN_WARNING
, ha
,
1546 "Memory Allocation failed - gid_list\n");
1548 qla2x00_mem_free(ha
);
1554 ha
->rlc_rsp
= dma_alloc_coherent(&ha
->pdev
->dev
,
1555 sizeof(rpt_lun_cmd_rsp_t
), &ha
->rlc_rsp_dma
, GFP_KERNEL
);
1556 if (ha
->rlc_rsp
== NULL
) {
1557 qla_printk(KERN_WARNING
, ha
,
1558 "Memory Allocation failed - rlc");
1560 qla2x00_mem_free(ha
);
1566 snprintf(name
, sizeof(name
), "qla2xxx_%ld", ha
->host_no
);
1567 ha
->s_dma_pool
= dma_pool_create(name
, &ha
->pdev
->dev
,
1568 DMA_POOL_SIZE
, 8, 0);
1569 if (ha
->s_dma_pool
== NULL
) {
1570 qla_printk(KERN_WARNING
, ha
,
1571 "Memory Allocation failed - s_dma_pool\n");
1573 qla2x00_mem_free(ha
);
1579 /* get consistent memory allocated for init control block */
1580 ha
->init_cb
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
1582 if (ha
->init_cb
== NULL
) {
1583 qla_printk(KERN_WARNING
, ha
,
1584 "Memory Allocation failed - init_cb\n");
1586 qla2x00_mem_free(ha
);
1591 memset(ha
->init_cb
, 0, sizeof(init_cb_t
));
1593 /* Get consistent memory allocated for Get Port Database cmd */
1594 ha
->iodesc_pd
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
1595 &ha
->iodesc_pd_dma
);
1596 if (ha
->iodesc_pd
== NULL
) {
1598 qla_printk(KERN_WARNING
, ha
,
1599 "Memory Allocation failed - iodesc_pd\n");
1601 qla2x00_mem_free(ha
);
1606 memset(ha
->iodesc_pd
, 0, PORT_DATABASE_SIZE
);
1608 /* Allocate ioctl related memory. */
1609 if (qla2x00_alloc_ioctl_mem(ha
)) {
1610 qla_printk(KERN_WARNING
, ha
,
1611 "Memory Allocation failed - ioctl_mem\n");
1613 qla2x00_mem_free(ha
);
1619 if (qla2x00_allocate_sp_pool(ha
)) {
1620 qla_printk(KERN_WARNING
, ha
,
1621 "Memory Allocation failed - "
1622 "qla2x00_allocate_sp_pool()\n");
1624 qla2x00_mem_free(ha
);
1630 /* Allocate memory for SNS commands */
1631 if (IS_QLA2100(ha
) || IS_QLA2200(ha
)) {
1632 /* Get consistent memory allocated for SNS commands */
1633 ha
->sns_cmd
= dma_alloc_coherent(&ha
->pdev
->dev
,
1634 sizeof(struct sns_cmd_pkt
), &ha
->sns_cmd_dma
,
1636 if (ha
->sns_cmd
== NULL
) {
1638 qla_printk(KERN_WARNING
, ha
,
1639 "Memory Allocation failed - sns_cmd\n");
1641 qla2x00_mem_free(ha
);
1646 memset(ha
->sns_cmd
, 0, sizeof(struct sns_cmd_pkt
));
1648 /* Get consistent memory allocated for MS IOCB */
1649 ha
->ms_iocb
= dma_pool_alloc(ha
->s_dma_pool
, GFP_KERNEL
,
1651 if (ha
->ms_iocb
== NULL
) {
1653 qla_printk(KERN_WARNING
, ha
,
1654 "Memory Allocation failed - ms_iocb\n");
1656 qla2x00_mem_free(ha
);
1661 memset(ha
->ms_iocb
, 0, sizeof(ms_iocb_entry_t
));
1664 * Get consistent memory allocated for CT SNS
1667 ha
->ct_sns
= dma_alloc_coherent(&ha
->pdev
->dev
,
1668 sizeof(struct ct_sns_pkt
), &ha
->ct_sns_dma
,
1670 if (ha
->ct_sns
== NULL
) {
1672 qla_printk(KERN_WARNING
, ha
,
1673 "Memory Allocation failed - ct_sns\n");
1675 qla2x00_mem_free(ha
);
1680 memset(ha
->ct_sns
, 0, sizeof(struct ct_sns_pkt
));
1683 /* Done all allocations without any error. */
1686 } while (retry
-- && status
!= 0);
1690 "%s(): **** FAILED ****\n", __func__
);
1698 * Frees all adapter allocated memory.
1701 * ha = adapter block pointer.
1704 qla2x00_mem_free(scsi_qla_host_t
*ha
)
1706 struct list_head
*fcpl
, *fcptemp
;
1708 unsigned long wtime
;/* max wait time if mbx cmd is busy. */
1712 DEBUG2(printk("%s(): ERROR invalid ha pointer.\n", __func__
));
1716 /* Make sure all other threads are stopped. */
1718 while (ha
->dpc_wait
&& wtime
) {
1719 set_current_state(TASK_INTERRUPTIBLE
);
1720 wtime
= schedule_timeout(wtime
);
1723 /* free ioctl memory */
1724 qla2x00_free_ioctl_mem(ha
);
1727 qla2x00_free_sp_pool(ha
);
1730 dma_free_coherent(&ha
->pdev
->dev
, sizeof(struct sns_cmd_pkt
),
1731 ha
->sns_cmd
, ha
->sns_cmd_dma
);
1734 dma_free_coherent(&ha
->pdev
->dev
, sizeof(struct ct_sns_pkt
),
1735 ha
->ct_sns
, ha
->ct_sns_dma
);
1738 dma_pool_free(ha
->s_dma_pool
, ha
->ms_iocb
, ha
->ms_iocb_dma
);
1741 dma_pool_free(ha
->s_dma_pool
, ha
->iodesc_pd
, ha
->iodesc_pd_dma
);
1744 dma_pool_free(ha
->s_dma_pool
, ha
->init_cb
, ha
->init_cb_dma
);
1747 dma_pool_destroy(ha
->s_dma_pool
);
1750 dma_free_coherent(&ha
->pdev
->dev
,
1751 sizeof(rpt_lun_cmd_rsp_t
), ha
->rlc_rsp
,
1755 dma_free_coherent(&ha
->pdev
->dev
, GID_LIST_SIZE
, ha
->gid_list
,
1758 if (ha
->response_ring
)
1759 dma_free_coherent(&ha
->pdev
->dev
,
1760 (ha
->response_q_length
+ 1) * sizeof(response_t
),
1761 ha
->response_ring
, ha
->response_dma
);
1763 if (ha
->request_ring
)
1764 dma_free_coherent(&ha
->pdev
->dev
,
1765 (ha
->request_q_length
+ 1) * sizeof(request_t
),
1766 ha
->request_ring
, ha
->request_dma
);
1769 ha
->sns_cmd_dma
= 0;
1773 ha
->ms_iocb_dma
= 0;
1774 ha
->iodesc_pd
= NULL
;
1775 ha
->iodesc_pd_dma
= 0;
1777 ha
->init_cb_dma
= 0;
1779 ha
->s_dma_pool
= NULL
;
1782 ha
->rlc_rsp_dma
= 0;
1783 ha
->gid_list
= NULL
;
1784 ha
->gid_list_dma
= 0;
1786 ha
->response_ring
= NULL
;
1787 ha
->response_dma
= 0;
1788 ha
->request_ring
= NULL
;
1789 ha
->request_dma
= 0;
1791 list_for_each_safe(fcpl
, fcptemp
, &ha
->fcports
) {
1792 fcport
= list_entry(fcpl
, fc_port_t
, list
);
1795 list_del_init(&fcport
->list
);
1798 INIT_LIST_HEAD(&ha
->fcports
);
1801 free_pages((unsigned long)ha
->fw_dump
, ha
->fw_dump_order
);
1803 if (ha
->fw_dump_buffer
)
1804 vfree(ha
->fw_dump_buffer
);
1807 ha
->fw_dump_reading
= 0;
1808 ha
->fw_dump_buffer
= NULL
;
1812 * qla2x00_allocate_sp_pool
1813 * This routine is called during initialization to allocate
1814 * memory for local srb_t.
1817 * ha = adapter block pointer.
1822 * Note: Sets the ref_count for non Null sp to one.
1825 qla2x00_allocate_sp_pool(scsi_qla_host_t
*ha
)
1830 ha
->srb_mempool
= mempool_create(SRB_MIN_REQ
, mempool_alloc_slab
,
1831 mempool_free_slab
, srb_cachep
);
1832 if (ha
->srb_mempool
== NULL
) {
1833 qla_printk(KERN_INFO
, ha
, "Unable to allocate SRB mempool.\n");
1834 rval
= QLA_FUNCTION_FAILED
;
1840 * This routine frees all adapter allocated memory.
1844 qla2x00_free_sp_pool( scsi_qla_host_t
*ha
)
1846 if (ha
->srb_mempool
) {
1847 mempool_destroy(ha
->srb_mempool
);
1848 ha
->srb_mempool
= NULL
;
1852 /**************************************************************************
1854 * This kernel thread is a task that is schedule by the interrupt handler
1855 * to perform the background processing for interrupts.
1858 * This task always run in the context of a kernel thread. It
1859 * is kick-off by the driver's detect code and starts up
1860 * up one per adapter. It immediately goes to sleep and waits for
1861 * some fibre event. When either the interrupt handler or
1862 * the timer routine detects a event it will one of the task
1863 * bits then wake us up.
1864 **************************************************************************/
1866 qla2x00_do_dpc(void *data
)
1868 DECLARE_MUTEX_LOCKED(sem
);
1869 scsi_qla_host_t
*ha
;
1872 uint16_t next_loopid
;
1874 ha
= (scsi_qla_host_t
*)data
;
1878 daemonize("%s_dpc", ha
->host_str
);
1879 allow_signal(SIGHUP
);
1881 ha
->dpc_wait
= &sem
;
1883 set_user_nice(current
, -20);
1887 complete(&ha
->dpc_inited
);
1890 DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
1892 if (down_interruptible(&sem
))
1895 if (ha
->dpc_should_die
)
1898 DEBUG3(printk("qla2x00: DPC handler waking up\n"));
1900 /* Initialization not yet finished. Don't do anything yet. */
1901 if (!ha
->flags
.init_done
|| ha
->dpc_active
)
1904 DEBUG3(printk("scsi(%ld): DPC handler\n", ha
->host_no
));
1908 if (ha
->flags
.mbox_busy
) {
1913 if (test_and_clear_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
)) {
1915 DEBUG(printk("scsi(%ld): dpc: sched "
1916 "qla2x00_abort_isp ha = %p\n",
1918 if (!(test_and_set_bit(ABORT_ISP_ACTIVE
,
1921 if (qla2x00_abort_isp(ha
)) {
1922 /* failed. retry later */
1923 set_bit(ISP_ABORT_NEEDED
,
1926 clear_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
);
1928 DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
1932 if (test_and_clear_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
) &&
1933 (!(test_and_set_bit(RESET_ACTIVE
, &ha
->dpc_flags
)))) {
1935 DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
1938 qla2x00_rst_aen(ha
);
1939 clear_bit(RESET_ACTIVE
, &ha
->dpc_flags
);
1942 /* Retry each device up to login retry count */
1943 if ((test_and_clear_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
)) &&
1944 !test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
) &&
1945 atomic_read(&ha
->loop_state
) != LOOP_DOWN
) {
1947 DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
1951 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
1952 if (fcport
->port_type
!= FCT_TARGET
)
1956 * If the port is not ONLINE then try to login
1957 * to it if we haven't run out of retries.
1959 if (atomic_read(&fcport
->state
) != FCS_ONLINE
&&
1960 fcport
->login_retry
) {
1962 fcport
->login_retry
--;
1963 if (fcport
->flags
& FCF_FABRIC_DEVICE
) {
1966 qla2x00_fabric_logout(
1969 status
= qla2x00_fabric_login(
1970 ha
, fcport
, &next_loopid
);
1973 qla2x00_local_device_login(
1974 ha
, fcport
->loop_id
);
1976 if (status
== QLA_SUCCESS
) {
1977 fcport
->old_loop_id
= fcport
->loop_id
;
1979 DEBUG(printk("scsi(%ld): port login OK: logged in ID 0x%x\n",
1980 ha
->host_no
, fcport
->loop_id
));
1982 fcport
->port_login_retry_count
=
1983 ha
->port_down_retry_count
* PORT_RETRY_TIME
;
1984 atomic_set(&fcport
->state
, FCS_ONLINE
);
1985 atomic_set(&fcport
->port_down_timer
,
1986 ha
->port_down_retry_count
* PORT_RETRY_TIME
);
1988 fcport
->login_retry
= 0;
1989 } else if (status
== 1) {
1990 set_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
);
1991 /* retry the login again */
1992 DEBUG(printk("scsi(%ld): Retrying %d login again loop_id 0x%x\n",
1994 fcport
->login_retry
, fcport
->loop_id
));
1996 fcport
->login_retry
= 0;
1999 if (test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
))
2002 DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
2006 if ((test_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
)) &&
2007 atomic_read(&ha
->loop_state
) != LOOP_DOWN
) {
2009 clear_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
);
2010 DEBUG(printk("scsi(%ld): qla2x00_login_retry()\n",
2013 set_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
);
2015 DEBUG(printk("scsi(%ld): qla2x00_login_retry - end\n",
2019 if (test_and_clear_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
)) {
2021 DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
2024 if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE
,
2027 qla2x00_loop_resync(ha
);
2029 clear_bit(LOOP_RESYNC_ACTIVE
, &ha
->dpc_flags
);
2032 DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
2036 if (test_and_clear_bit(FCPORT_RESCAN_NEEDED
, &ha
->dpc_flags
)) {
2038 DEBUG(printk("scsi(%ld): Rescan flagged fcports...\n",
2041 qla2x00_rescan_fcports(ha
);
2043 DEBUG(printk("scsi(%ld): Rescan flagged fcports..."
2048 if (!ha
->interrupts_on
)
2049 qla2x00_enable_intrs(ha
);
2052 } /* End of while(1) */
2054 DEBUG(printk("scsi(%ld): DPC handler exiting\n", ha
->host_no
));
2057 * Make sure that nobody tries to wake us up again.
2059 ha
->dpc_wait
= NULL
;
2062 complete_and_exit(&ha
->dpc_exited
, 0);
2067 * Processes asynchronous reset.
2070 * ha = adapter block pointer.
2073 qla2x00_rst_aen(scsi_qla_host_t
*ha
)
2075 if (ha
->flags
.online
&& !ha
->flags
.reset_active
&&
2076 !atomic_read(&ha
->loop_down_timer
) &&
2077 !(test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
))) {
2079 clear_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
);
2082 * Issue marker command only when we are going to start
2085 ha
->marker_needed
= 1;
2086 } while (!atomic_read(&ha
->loop_down_timer
) &&
2087 (test_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
)));
2093 * This routine will allocate SP from the free queue
2100 qla2x00_get_new_sp(scsi_qla_host_t
*ha
)
2104 sp
= mempool_alloc(ha
->srb_mempool
, GFP_ATOMIC
);
2106 atomic_set(&sp
->ref_count
, 1);
2111 qla2x00_sp_free_dma(scsi_qla_host_t
*ha
, srb_t
*sp
)
2113 struct scsi_cmnd
*cmd
= sp
->cmd
;
2115 if (sp
->flags
& SRB_DMA_VALID
) {
2117 dma_unmap_sg(&ha
->pdev
->dev
, cmd
->request_buffer
,
2118 cmd
->use_sg
, cmd
->sc_data_direction
);
2119 } else if (cmd
->request_bufflen
) {
2120 dma_unmap_single(&ha
->pdev
->dev
, sp
->dma_handle
,
2121 cmd
->request_bufflen
, cmd
->sc_data_direction
);
2123 sp
->flags
&= ~SRB_DMA_VALID
;
2128 qla2x00_sp_compl(scsi_qla_host_t
*ha
, srb_t
*sp
)
2130 struct scsi_cmnd
*cmd
= sp
->cmd
;
2132 qla2x00_sp_free_dma(ha
, sp
);
2135 mempool_free(sp
, ha
->srb_mempool
);
2137 cmd
->scsi_done(cmd
);
2140 /**************************************************************************
2146 * Context: Interrupt
2147 ***************************************************************************/
2149 qla2x00_timer(scsi_qla_host_t
*ha
)
2151 unsigned long cpu_flags
= 0;
2159 * Ports - Port down timer.
2161 * Whenever, a port is in the LOST state we start decrementing its port
2162 * down timer every second until it reaches zero. Once it reaches zero
2163 * the port it marked DEAD.
2166 list_for_each_entry(fcport
, &ha
->fcports
, list
) {
2167 if (fcport
->port_type
!= FCT_TARGET
)
2170 if (atomic_read(&fcport
->state
) == FCS_DEVICE_LOST
) {
2172 if (atomic_read(&fcport
->port_down_timer
) == 0)
2175 if (atomic_dec_and_test(&fcport
->port_down_timer
) != 0)
2176 atomic_set(&fcport
->state
, FCS_DEVICE_DEAD
);
2178 DEBUG(printk("scsi(%ld): fcport-%d - port retry count: "
2181 t
, atomic_read(&fcport
->port_down_timer
)));
2184 } /* End of for fcport */
2187 /* Loop down handler. */
2188 if (atomic_read(&ha
->loop_down_timer
) > 0 &&
2189 !(test_bit(ABORT_ISP_ACTIVE
, &ha
->dpc_flags
)) && ha
->flags
.online
) {
2191 if (atomic_read(&ha
->loop_down_timer
) ==
2192 ha
->loop_down_abort_time
) {
2194 DEBUG(printk("scsi(%ld): Loop Down - aborting the "
2195 "queues before time expire\n",
2198 if (!IS_QLA2100(ha
) && ha
->link_down_timeout
)
2199 atomic_set(&ha
->loop_state
, LOOP_DEAD
);
2201 /* Schedule an ISP abort to return any tape commands. */
2202 spin_lock_irqsave(&ha
->hardware_lock
, cpu_flags
);
2203 for (index
= 1; index
< MAX_OUTSTANDING_COMMANDS
;
2207 sp
= ha
->outstanding_cmds
[index
];
2211 if (!(sfcp
->flags
& FCF_TAPE_PRESENT
))
2214 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
2217 spin_unlock_irqrestore(&ha
->hardware_lock
, cpu_flags
);
2219 set_bit(ABORT_QUEUES_NEEDED
, &ha
->dpc_flags
);
2223 /* if the loop has been down for 4 minutes, reinit adapter */
2224 if (atomic_dec_and_test(&ha
->loop_down_timer
) != 0) {
2225 DEBUG(printk("scsi(%ld): Loop down exceed 4 mins - "
2226 "restarting queues.\n",
2229 set_bit(RESTART_QUEUES_NEEDED
, &ha
->dpc_flags
);
2232 if (!(ha
->device_flags
& DFLG_NO_CABLE
)) {
2233 DEBUG(printk("scsi(%ld): Loop down - "
2236 qla_printk(KERN_WARNING
, ha
,
2237 "Loop down - aborting ISP.\n");
2239 set_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
);
2242 DEBUG3(printk("scsi(%ld): Loop Down - seconds remainning %d\n",
2244 atomic_read(&ha
->loop_down_timer
)));
2247 /* Schedule the DPC routine if needed */
2248 if ((test_bit(ISP_ABORT_NEEDED
, &ha
->dpc_flags
) ||
2249 test_bit(LOOP_RESYNC_NEEDED
, &ha
->dpc_flags
) ||
2251 test_bit(LOGIN_RETRY_NEEDED
, &ha
->dpc_flags
) ||
2252 test_bit(RESET_MARKER_NEEDED
, &ha
->dpc_flags
) ||
2253 test_bit(RELOGIN_NEEDED
, &ha
->dpc_flags
)) &&
2254 ha
->dpc_wait
&& !ha
->dpc_active
) {
2259 qla2x00_restart_timer(ha
, WATCH_INTERVAL
);
2262 /* XXX(hch): crude hack to emulate a down_timeout() */
2264 qla2x00_down_timeout(struct semaphore
*sema
, unsigned long timeout
)
2266 const unsigned int step
= HZ
/10;
2269 if (!down_trylock(sema
))
2271 set_current_state(TASK_INTERRUPTIBLE
);
2272 if (schedule_timeout(step
))
2274 } while ((timeout
-= step
) > 0);
2280 * qla2x00_module_init - Module initialization.
2283 qla2x00_module_init(void)
2285 /* Allocate cache for SRBs. */
2286 srb_cachep
= kmem_cache_create("qla2xxx_srbs", sizeof(srb_t
), 0,
2287 SLAB_HWCACHE_ALIGN
, NULL
, NULL
);
2288 if (srb_cachep
== NULL
) {
2290 "qla2xxx: Unable to allocate SRB cache...Failing load!\n");
2294 /* Derive version string. */
2295 strcpy(qla2x00_version_str
, QLA2XXX_VERSION
);
2297 strcat(qla2x00_version_str
, "-debug");
2299 qla2xxx_transport_template
=
2300 fc_attach_transport(&qla2xxx_transport_functions
);
2301 if (!qla2xxx_transport_template
)
2304 printk(KERN_INFO
"QLogic Fibre Channel HBA Driver\n");
2309 * qla2x00_module_exit - Module cleanup.
2312 qla2x00_module_exit(void)
2314 kmem_cache_destroy(srb_cachep
);
2315 fc_release_transport(qla2xxx_transport_template
);
2318 module_init(qla2x00_module_init
);
2319 module_exit(qla2x00_module_exit
);
2321 MODULE_AUTHOR("QLogic Corporation");
2322 MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
2323 MODULE_LICENSE("GPL");
2324 MODULE_VERSION(QLA2XXX_VERSION
);