2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2006 QLogic Corporation
5 * See LICENSE.qla4xxx for copyright and licensing details.
7 #include <linux/moduleparam.h>
9 #include <scsi/scsi_tcq.h>
10 #include <scsi/scsicam.h>
13 #include "ql4_version.h"
16 #include "ql4_inline.h"
21 static char qla4xxx_version_str
[40];
24 * SRB allocation cache
26 static struct kmem_cache
*srb_cachep
;
29 * Module parameter information and variables
31 int ql4xdiscoverywait
= 60;
32 module_param(ql4xdiscoverywait
, int, S_IRUGO
| S_IRUSR
);
33 MODULE_PARM_DESC(ql4xdiscoverywait
, "Discovery wait time");
34 int ql4xdontresethba
= 0;
35 module_param(ql4xdontresethba
, int, S_IRUGO
| S_IRUSR
);
36 MODULE_PARM_DESC(ql4xdontresethba
,
37 "Dont reset the HBA when the driver gets 0x8002 AEN "
38 " default it will reset hba :0"
39 " set to 1 to avoid resetting HBA");
41 int ql4xextended_error_logging
= 0; /* 0 = off, 1 = log errors */
42 module_param(ql4xextended_error_logging
, int, S_IRUGO
| S_IRUSR
);
43 MODULE_PARM_DESC(ql4xextended_error_logging
,
44 "Option to enable extended error logging, "
45 "Default is 0 - no logging, 1 - debug logging");
47 int ql4_mod_unload
= 0;
50 * SCSI host template entry points
52 static void qla4xxx_config_dma_addressing(struct scsi_qla_host
*ha
);
55 * iSCSI template entry points
57 static int qla4xxx_tgt_dscvr(struct Scsi_Host
*shost
,
58 enum iscsi_tgt_dscvr type
, uint32_t enable
,
59 struct sockaddr
*dst_addr
);
60 static int qla4xxx_conn_get_param(struct iscsi_cls_conn
*conn
,
61 enum iscsi_param param
, char *buf
);
62 static int qla4xxx_sess_get_param(struct iscsi_cls_session
*sess
,
63 enum iscsi_param param
, char *buf
);
64 static int qla4xxx_host_get_param(struct Scsi_Host
*shost
,
65 enum iscsi_host_param param
, char *buf
);
66 static void qla4xxx_conn_stop(struct iscsi_cls_conn
*conn
, int flag
);
67 static int qla4xxx_conn_start(struct iscsi_cls_conn
*conn
);
68 static void qla4xxx_recovery_timedout(struct iscsi_cls_session
*session
);
71 * SCSI host template entry points
73 static int qla4xxx_queuecommand(struct scsi_cmnd
*cmd
,
74 void (*done
) (struct scsi_cmnd
*));
75 static int qla4xxx_eh_device_reset(struct scsi_cmnd
*cmd
);
76 static int qla4xxx_eh_host_reset(struct scsi_cmnd
*cmd
);
77 static int qla4xxx_slave_alloc(struct scsi_device
*device
);
78 static int qla4xxx_slave_configure(struct scsi_device
*device
);
79 static void qla4xxx_slave_destroy(struct scsi_device
*sdev
);
81 static struct scsi_host_template qla4xxx_driver_template
= {
82 .module
= THIS_MODULE
,
84 .proc_name
= DRIVER_NAME
,
85 .queuecommand
= qla4xxx_queuecommand
,
87 .eh_device_reset_handler
= qla4xxx_eh_device_reset
,
88 .eh_host_reset_handler
= qla4xxx_eh_host_reset
,
90 .slave_configure
= qla4xxx_slave_configure
,
91 .slave_alloc
= qla4xxx_slave_alloc
,
92 .slave_destroy
= qla4xxx_slave_destroy
,
96 .use_clustering
= ENABLE_CLUSTERING
,
97 .sg_tablesize
= SG_ALL
,
99 .max_sectors
= 0xFFFF,
102 static struct iscsi_transport qla4xxx_iscsi_transport
= {
103 .owner
= THIS_MODULE
,
105 .caps
= CAP_FW_DB
| CAP_SENDTARGETS_OFFLOAD
|
106 CAP_DATA_PATH_OFFLOAD
,
107 .param_mask
= ISCSI_CONN_PORT
| ISCSI_CONN_ADDRESS
|
108 ISCSI_TARGET_NAME
| ISCSI_TPGT
,
109 .host_param_mask
= ISCSI_HOST_HWADDRESS
|
110 ISCSI_HOST_IPADDRESS
|
111 ISCSI_HOST_INITIATOR_NAME
,
112 .sessiondata_size
= sizeof(struct ddb_entry
),
113 .host_template
= &qla4xxx_driver_template
,
115 .tgt_dscvr
= qla4xxx_tgt_dscvr
,
116 .get_conn_param
= qla4xxx_conn_get_param
,
117 .get_session_param
= qla4xxx_sess_get_param
,
118 .get_host_param
= qla4xxx_host_get_param
,
119 .start_conn
= qla4xxx_conn_start
,
120 .stop_conn
= qla4xxx_conn_stop
,
121 .session_recovery_timedout
= qla4xxx_recovery_timedout
,
124 static struct scsi_transport_template
*qla4xxx_scsi_transport
;
126 static void qla4xxx_recovery_timedout(struct iscsi_cls_session
*session
)
128 struct ddb_entry
*ddb_entry
= session
->dd_data
;
129 struct scsi_qla_host
*ha
= ddb_entry
->ha
;
131 DEBUG2(printk("scsi%ld: %s: index [%d] port down retry count of (%d) "
132 "secs exhausted, marking device DEAD.\n", ha
->host_no
,
133 __func__
, ddb_entry
->fw_ddb_index
,
134 ha
->port_down_retry_count
));
136 atomic_set(&ddb_entry
->state
, DDB_STATE_DEAD
);
138 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine - dpc flags = "
139 "0x%lx\n", ha
->host_no
, __func__
, ha
->dpc_flags
));
140 queue_work(ha
->dpc_thread
, &ha
->dpc_work
);
143 static int qla4xxx_conn_start(struct iscsi_cls_conn
*conn
)
145 struct iscsi_cls_session
*session
;
146 struct ddb_entry
*ddb_entry
;
148 session
= iscsi_dev_to_session(conn
->dev
.parent
);
149 ddb_entry
= session
->dd_data
;
151 DEBUG2(printk("scsi%ld: %s: index [%d] starting conn\n",
152 ddb_entry
->ha
->host_no
, __func__
,
153 ddb_entry
->fw_ddb_index
));
154 iscsi_unblock_session(session
);
158 static void qla4xxx_conn_stop(struct iscsi_cls_conn
*conn
, int flag
)
160 struct iscsi_cls_session
*session
;
161 struct ddb_entry
*ddb_entry
;
163 session
= iscsi_dev_to_session(conn
->dev
.parent
);
164 ddb_entry
= session
->dd_data
;
166 DEBUG2(printk("scsi%ld: %s: index [%d] stopping conn\n",
167 ddb_entry
->ha
->host_no
, __func__
,
168 ddb_entry
->fw_ddb_index
));
169 if (flag
== STOP_CONN_RECOVER
)
170 iscsi_block_session(session
);
172 printk(KERN_ERR
"iscsi: invalid stop flag %d\n", flag
);
175 static int qla4xxx_host_get_param(struct Scsi_Host
*shost
,
176 enum iscsi_host_param param
, char *buf
)
178 struct scsi_qla_host
*ha
= to_qla_host(shost
);
182 case ISCSI_HOST_PARAM_HWADDRESS
:
183 len
= sysfs_format_mac(buf
, ha
->my_mac
, MAC_ADDR_LEN
);
185 case ISCSI_HOST_PARAM_IPADDRESS
:
186 len
= sprintf(buf
, "%d.%d.%d.%d\n", ha
->ip_address
[0],
187 ha
->ip_address
[1], ha
->ip_address
[2],
190 case ISCSI_HOST_PARAM_INITIATOR_NAME
:
191 len
= sprintf(buf
, "%s\n", ha
->name_string
);
200 static int qla4xxx_sess_get_param(struct iscsi_cls_session
*sess
,
201 enum iscsi_param param
, char *buf
)
203 struct ddb_entry
*ddb_entry
= sess
->dd_data
;
207 case ISCSI_PARAM_TARGET_NAME
:
208 len
= snprintf(buf
, PAGE_SIZE
- 1, "%s\n",
209 ddb_entry
->iscsi_name
);
211 case ISCSI_PARAM_TPGT
:
212 len
= sprintf(buf
, "%u\n", ddb_entry
->tpgt
);
221 static int qla4xxx_conn_get_param(struct iscsi_cls_conn
*conn
,
222 enum iscsi_param param
, char *buf
)
224 struct iscsi_cls_session
*session
;
225 struct ddb_entry
*ddb_entry
;
228 session
= iscsi_dev_to_session(conn
->dev
.parent
);
229 ddb_entry
= session
->dd_data
;
232 case ISCSI_PARAM_CONN_PORT
:
233 len
= sprintf(buf
, "%hu\n", ddb_entry
->port
);
235 case ISCSI_PARAM_CONN_ADDRESS
:
236 /* TODO: what are the ipv6 bits */
237 len
= sprintf(buf
, "%u.%u.%u.%u\n",
238 NIPQUAD(ddb_entry
->ip_addr
));
247 static int qla4xxx_tgt_dscvr(struct Scsi_Host
*shost
,
248 enum iscsi_tgt_dscvr type
, uint32_t enable
,
249 struct sockaddr
*dst_addr
)
251 struct scsi_qla_host
*ha
;
252 struct sockaddr_in
*addr
;
253 struct sockaddr_in6
*addr6
;
256 ha
= (struct scsi_qla_host
*) shost
->hostdata
;
259 case ISCSI_TGT_DSCVR_SEND_TARGETS
:
260 if (dst_addr
->sa_family
== AF_INET
) {
261 addr
= (struct sockaddr_in
*)dst_addr
;
262 if (qla4xxx_send_tgts(ha
, (char *)&addr
->sin_addr
,
263 addr
->sin_port
) != QLA_SUCCESS
)
265 } else if (dst_addr
->sa_family
== AF_INET6
) {
267 * TODO: fix qla4xxx_send_tgts
269 addr6
= (struct sockaddr_in6
*)dst_addr
;
270 if (qla4xxx_send_tgts(ha
, (char *)&addr6
->sin6_addr
,
271 addr6
->sin6_port
) != QLA_SUCCESS
)
282 void qla4xxx_destroy_sess(struct ddb_entry
*ddb_entry
)
284 if (!ddb_entry
->sess
)
287 if (ddb_entry
->conn
) {
288 atomic_set(&ddb_entry
->state
, DDB_STATE_DEAD
);
289 iscsi_remove_session(ddb_entry
->sess
);
291 iscsi_free_session(ddb_entry
->sess
);
294 int qla4xxx_add_sess(struct ddb_entry
*ddb_entry
)
298 ddb_entry
->sess
->recovery_tmo
= ddb_entry
->ha
->port_down_retry_count
;
299 err
= iscsi_add_session(ddb_entry
->sess
, ddb_entry
->fw_ddb_index
);
301 DEBUG2(printk(KERN_ERR
"Could not add session.\n"));
305 ddb_entry
->conn
= iscsi_create_conn(ddb_entry
->sess
, 0);
306 if (!ddb_entry
->conn
) {
307 iscsi_remove_session(ddb_entry
->sess
);
308 DEBUG2(printk(KERN_ERR
"Could not add connection.\n"));
314 struct ddb_entry
*qla4xxx_alloc_sess(struct scsi_qla_host
*ha
)
316 struct ddb_entry
*ddb_entry
;
317 struct iscsi_cls_session
*sess
;
319 sess
= iscsi_alloc_session(ha
->host
, &qla4xxx_iscsi_transport
);
323 ddb_entry
= sess
->dd_data
;
324 memset(ddb_entry
, 0, sizeof(*ddb_entry
));
326 ddb_entry
->sess
= sess
;
334 static void qla4xxx_start_timer(struct scsi_qla_host
*ha
, void *func
,
335 unsigned long interval
)
337 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
338 __func__
, ha
->host
->host_no
));
339 init_timer(&ha
->timer
);
340 ha
->timer
.expires
= jiffies
+ interval
* HZ
;
341 ha
->timer
.data
= (unsigned long)ha
;
342 ha
->timer
.function
= (void (*)(unsigned long))func
;
343 add_timer(&ha
->timer
);
344 ha
->timer_active
= 1;
347 static void qla4xxx_stop_timer(struct scsi_qla_host
*ha
)
349 del_timer_sync(&ha
->timer
);
350 ha
->timer_active
= 0;
354 * qla4xxx_mark_device_missing - mark a device as missing.
355 * @ha: Pointer to host adapter structure.
356 * @ddb_entry: Pointer to device database entry
358 * This routine marks a device missing and resets the relogin retry count.
360 void qla4xxx_mark_device_missing(struct scsi_qla_host
*ha
,
361 struct ddb_entry
*ddb_entry
)
363 atomic_set(&ddb_entry
->state
, DDB_STATE_MISSING
);
364 DEBUG3(printk("scsi%d:%d:%d: index [%d] marked MISSING\n",
365 ha
->host_no
, ddb_entry
->bus
, ddb_entry
->target
,
366 ddb_entry
->fw_ddb_index
));
367 iscsi_conn_error(ddb_entry
->conn
, ISCSI_ERR_CONN_FAILED
);
370 static struct srb
* qla4xxx_get_new_srb(struct scsi_qla_host
*ha
,
371 struct ddb_entry
*ddb_entry
,
372 struct scsi_cmnd
*cmd
,
373 void (*done
)(struct scsi_cmnd
*))
377 srb
= mempool_alloc(ha
->srb_mempool
, GFP_ATOMIC
);
381 atomic_set(&srb
->ref_count
, 1);
383 srb
->ddb
= ddb_entry
;
386 cmd
->SCp
.ptr
= (void *)srb
;
387 cmd
->scsi_done
= done
;
392 static void qla4xxx_srb_free_dma(struct scsi_qla_host
*ha
, struct srb
*srb
)
394 struct scsi_cmnd
*cmd
= srb
->cmd
;
396 if (srb
->flags
& SRB_DMA_VALID
) {
398 srb
->flags
&= ~SRB_DMA_VALID
;
403 void qla4xxx_srb_compl(struct scsi_qla_host
*ha
, struct srb
*srb
)
405 struct scsi_cmnd
*cmd
= srb
->cmd
;
407 qla4xxx_srb_free_dma(ha
, srb
);
409 mempool_free(srb
, ha
->srb_mempool
);
415 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
416 * @cmd: Pointer to Linux's SCSI command structure
417 * @done_fn: Function that the driver calls to notify the SCSI mid-layer
418 * that the command has been processed.
421 * This routine is invoked by Linux to send a SCSI command to the driver.
422 * The mid-level driver tries to ensure that queuecommand never gets
423 * invoked concurrently with itself or the interrupt handler (although
424 * the interrupt handler may call this routine as part of request-
425 * completion handling). Unfortunely, it sometimes calls the scheduler
426 * in interrupt context which is a big NO! NO!.
428 static int qla4xxx_queuecommand(struct scsi_cmnd
*cmd
,
429 void (*done
)(struct scsi_cmnd
*))
431 struct scsi_qla_host
*ha
= to_qla_host(cmd
->device
->host
);
432 struct ddb_entry
*ddb_entry
= cmd
->device
->hostdata
;
436 if (atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
) {
437 if (atomic_read(&ddb_entry
->state
) == DDB_STATE_DEAD
) {
438 cmd
->result
= DID_NO_CONNECT
<< 16;
439 goto qc_fail_command
;
444 if (test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
))
447 spin_unlock_irq(ha
->host
->host_lock
);
449 srb
= qla4xxx_get_new_srb(ha
, ddb_entry
, cmd
, done
);
451 goto qc_host_busy_lock
;
453 rval
= qla4xxx_send_command_to_isp(ha
, srb
);
454 if (rval
!= QLA_SUCCESS
)
455 goto qc_host_busy_free_sp
;
457 spin_lock_irq(ha
->host
->host_lock
);
460 qc_host_busy_free_sp
:
461 qla4xxx_srb_free_dma(ha
, srb
);
462 mempool_free(srb
, ha
->srb_mempool
);
465 spin_lock_irq(ha
->host
->host_lock
);
468 return SCSI_MLQUEUE_HOST_BUSY
;
477 * qla4xxx_mem_free - frees memory allocated to adapter
478 * @ha: Pointer to host adapter structure.
480 * Frees memory previously allocated by qla4xxx_mem_alloc
482 static void qla4xxx_mem_free(struct scsi_qla_host
*ha
)
485 dma_free_coherent(&ha
->pdev
->dev
, ha
->queues_len
, ha
->queues
,
491 ha
->request_ring
= NULL
;
493 ha
->response_ring
= NULL
;
494 ha
->response_dma
= 0;
495 ha
->shadow_regs
= NULL
;
496 ha
->shadow_regs_dma
= 0;
500 mempool_destroy(ha
->srb_mempool
);
502 ha
->srb_mempool
= NULL
;
504 /* release io space registers */
507 pci_release_regions(ha
->pdev
);
511 * qla4xxx_mem_alloc - allocates memory for use by adapter.
512 * @ha: Pointer to host adapter structure
514 * Allocates DMA memory for request and response queues. Also allocates memory
517 static int qla4xxx_mem_alloc(struct scsi_qla_host
*ha
)
521 /* Allocate contiguous block of DMA memory for queues. */
522 ha
->queues_len
= ((REQUEST_QUEUE_DEPTH
* QUEUE_SIZE
) +
523 (RESPONSE_QUEUE_DEPTH
* QUEUE_SIZE
) +
524 sizeof(struct shadow_regs
) +
526 (PAGE_SIZE
- 1)) & ~(PAGE_SIZE
- 1);
527 ha
->queues
= dma_alloc_coherent(&ha
->pdev
->dev
, ha
->queues_len
,
528 &ha
->queues_dma
, GFP_KERNEL
);
529 if (ha
->queues
== NULL
) {
530 dev_warn(&ha
->pdev
->dev
,
531 "Memory Allocation failed - queues.\n");
533 goto mem_alloc_error_exit
;
535 memset(ha
->queues
, 0, ha
->queues_len
);
538 * As per RISC alignment requirements -- the bus-address must be a
539 * multiple of the request-ring size (in bytes).
542 if ((unsigned long)ha
->queues_dma
& (MEM_ALIGN_VALUE
- 1))
543 align
= MEM_ALIGN_VALUE
- ((unsigned long)ha
->queues_dma
&
544 (MEM_ALIGN_VALUE
- 1));
546 /* Update request and response queue pointers. */
547 ha
->request_dma
= ha
->queues_dma
+ align
;
548 ha
->request_ring
= (struct queue_entry
*) (ha
->queues
+ align
);
549 ha
->response_dma
= ha
->queues_dma
+ align
+
550 (REQUEST_QUEUE_DEPTH
* QUEUE_SIZE
);
551 ha
->response_ring
= (struct queue_entry
*) (ha
->queues
+ align
+
552 (REQUEST_QUEUE_DEPTH
*
554 ha
->shadow_regs_dma
= ha
->queues_dma
+ align
+
555 (REQUEST_QUEUE_DEPTH
* QUEUE_SIZE
) +
556 (RESPONSE_QUEUE_DEPTH
* QUEUE_SIZE
);
557 ha
->shadow_regs
= (struct shadow_regs
*) (ha
->queues
+ align
+
558 (REQUEST_QUEUE_DEPTH
*
560 (RESPONSE_QUEUE_DEPTH
*
563 /* Allocate memory for srb pool. */
564 ha
->srb_mempool
= mempool_create(SRB_MIN_REQ
, mempool_alloc_slab
,
565 mempool_free_slab
, srb_cachep
);
566 if (ha
->srb_mempool
== NULL
) {
567 dev_warn(&ha
->pdev
->dev
,
568 "Memory Allocation failed - SRB Pool.\n");
570 goto mem_alloc_error_exit
;
575 mem_alloc_error_exit
:
576 qla4xxx_mem_free(ha
);
581 * qla4xxx_timer - checks every second for work to do.
582 * @ha: Pointer to host adapter structure.
584 static void qla4xxx_timer(struct scsi_qla_host
*ha
)
586 struct ddb_entry
*ddb_entry
, *dtemp
;
589 /* Search for relogin's to time-out and port down retry. */
590 list_for_each_entry_safe(ddb_entry
, dtemp
, &ha
->ddb_list
, list
) {
591 /* Count down time between sending relogins */
592 if (adapter_up(ha
) &&
593 !test_bit(DF_RELOGIN
, &ddb_entry
->flags
) &&
594 atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
) {
595 if (atomic_read(&ddb_entry
->retry_relogin_timer
) !=
597 if (atomic_read(&ddb_entry
->retry_relogin_timer
)
599 atomic_set(&ddb_entry
->
602 set_bit(DPC_RELOGIN_DEVICE
,
604 set_bit(DF_RELOGIN
, &ddb_entry
->flags
);
605 DEBUG2(printk("scsi%ld: %s: index [%d]"
607 ha
->host_no
, __func__
,
608 ddb_entry
->fw_ddb_index
));
610 atomic_dec(&ddb_entry
->
611 retry_relogin_timer
);
615 /* Wait for relogin to timeout */
616 if (atomic_read(&ddb_entry
->relogin_timer
) &&
617 (atomic_dec_and_test(&ddb_entry
->relogin_timer
) != 0)) {
619 * If the relogin times out and the device is
620 * still NOT ONLINE then try and relogin again.
622 if (atomic_read(&ddb_entry
->state
) !=
624 ddb_entry
->fw_ddb_device_state
==
625 DDB_DS_SESSION_FAILED
) {
626 /* Reset retry relogin timer */
627 atomic_inc(&ddb_entry
->relogin_retry_count
);
628 DEBUG2(printk("scsi%ld: index[%d] relogin"
629 " timed out-retrying"
632 ddb_entry
->fw_ddb_index
,
633 atomic_read(&ddb_entry
->
634 relogin_retry_count
))
637 DEBUG(printk("scsi%ld:%d:%d: index [%d] "
638 "initate relogin after"
640 ha
->host_no
, ddb_entry
->bus
,
642 ddb_entry
->fw_ddb_index
,
643 ddb_entry
->default_time2wait
+ 4)
646 atomic_set(&ddb_entry
->retry_relogin_timer
,
647 ddb_entry
->default_time2wait
+ 4);
652 /* Check for heartbeat interval. */
653 if (ha
->firmware_options
& FWOPT_HEARTBEAT_ENABLE
&&
654 ha
->heartbeat_interval
!= 0) {
655 ha
->seconds_since_last_heartbeat
++;
656 if (ha
->seconds_since_last_heartbeat
>
657 ha
->heartbeat_interval
+ 2)
658 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
662 /* Wakeup the dpc routine for this adapter, if needed. */
664 test_bit(DPC_RESET_HA
, &ha
->dpc_flags
) ||
665 test_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
) ||
666 test_bit(DPC_RELOGIN_DEVICE
, &ha
->dpc_flags
) ||
667 test_bit(DPC_RESET_HA_DESTROY_DDB_LIST
, &ha
->dpc_flags
) ||
668 test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
) ||
669 test_bit(DPC_GET_DHCP_IP_ADDR
, &ha
->dpc_flags
) ||
670 test_bit(DPC_AEN
, &ha
->dpc_flags
)) &&
672 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
673 " - dpc flags = 0x%lx\n",
674 ha
->host_no
, __func__
, ha
->dpc_flags
));
675 queue_work(ha
->dpc_thread
, &ha
->dpc_work
);
678 /* Reschedule timer thread to call us back in one second */
679 mod_timer(&ha
->timer
, jiffies
+ HZ
);
681 DEBUG2(ha
->seconds_since_last_intr
++);
685 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
686 * @ha: Pointer to host adapter structure.
688 * This routine stalls the driver until all outstanding commands are returned.
689 * Caller must release the Hardware Lock prior to calling this routine.
691 static int qla4xxx_cmd_wait(struct scsi_qla_host
*ha
)
694 int stat
= QLA_SUCCESS
;
696 struct scsi_cmnd
*cmd
;
697 int wait_cnt
= WAIT_CMD_TOV
; /*
698 * Initialized for 30 seconds as we
699 * expect all commands to retuned
704 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
705 /* Find a command that hasn't completed. */
706 for (index
= 0; index
< ha
->host
->can_queue
; index
++) {
707 cmd
= scsi_host_find_tag(ha
->host
, index
);
711 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
713 /* If No Commands are pending, wait is complete */
714 if (index
== ha
->host
->can_queue
) {
718 /* If we timed out on waiting for commands to come back
727 } /* End of While (wait_cnt) */
732 void qla4xxx_hw_reset(struct scsi_qla_host
*ha
)
734 uint32_t ctrl_status
;
735 unsigned long flags
= 0;
737 DEBUG2(printk(KERN_ERR
"scsi%ld: %s\n", ha
->host_no
, __func__
));
739 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
742 * If the SCSI Reset Interrupt bit is set, clear it.
743 * Otherwise, the Soft Reset won't work.
745 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
746 if ((ctrl_status
& CSR_SCSI_RESET_INTR
) != 0)
747 writel(set_rmask(CSR_SCSI_RESET_INTR
), &ha
->reg
->ctrl_status
);
749 /* Issue Soft Reset */
750 writel(set_rmask(CSR_SOFT_RESET
), &ha
->reg
->ctrl_status
);
751 readl(&ha
->reg
->ctrl_status
);
753 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
757 * qla4xxx_soft_reset - performs soft reset.
758 * @ha: Pointer to host adapter structure.
760 int qla4xxx_soft_reset(struct scsi_qla_host
*ha
)
762 uint32_t max_wait_time
;
763 unsigned long flags
= 0;
764 int status
= QLA_ERROR
;
765 uint32_t ctrl_status
;
767 qla4xxx_hw_reset(ha
);
769 /* Wait until the Network Reset Intr bit is cleared */
770 max_wait_time
= RESET_INTR_TOV
;
772 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
773 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
774 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
776 if ((ctrl_status
& CSR_NET_RESET_INTR
) == 0)
780 } while ((--max_wait_time
));
782 if ((ctrl_status
& CSR_NET_RESET_INTR
) != 0) {
783 DEBUG2(printk(KERN_WARNING
784 "scsi%ld: Network Reset Intr not cleared by "
785 "Network function, clearing it now!\n",
787 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
788 writel(set_rmask(CSR_NET_RESET_INTR
), &ha
->reg
->ctrl_status
);
789 readl(&ha
->reg
->ctrl_status
);
790 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
793 /* Wait until the firmware tells us the Soft Reset is done */
794 max_wait_time
= SOFT_RESET_TOV
;
796 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
797 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
798 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
800 if ((ctrl_status
& CSR_SOFT_RESET
) == 0) {
801 status
= QLA_SUCCESS
;
806 } while ((--max_wait_time
));
809 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
810 * after the soft reset has taken place.
812 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
813 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
814 if ((ctrl_status
& CSR_SCSI_RESET_INTR
) != 0) {
815 writel(set_rmask(CSR_SCSI_RESET_INTR
), &ha
->reg
->ctrl_status
);
816 readl(&ha
->reg
->ctrl_status
);
818 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
820 /* If soft reset fails then most probably the bios on other
821 * function is also enabled.
822 * Since the initialization is sequential the other fn
823 * wont be able to acknowledge the soft reset.
824 * Issue a force soft reset to workaround this scenario.
826 if (max_wait_time
== 0) {
827 /* Issue Force Soft Reset */
828 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
829 writel(set_rmask(CSR_FORCE_SOFT_RESET
), &ha
->reg
->ctrl_status
);
830 readl(&ha
->reg
->ctrl_status
);
831 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
832 /* Wait until the firmware tells us the Soft Reset is done */
833 max_wait_time
= SOFT_RESET_TOV
;
835 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
836 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
837 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
839 if ((ctrl_status
& CSR_FORCE_SOFT_RESET
) == 0) {
840 status
= QLA_SUCCESS
;
845 } while ((--max_wait_time
));
852 * qla4xxx_flush_active_srbs - returns all outstanding i/o requests to O.S.
853 * @ha: Pointer to host adapter structure.
855 * This routine is called just prior to a HARD RESET to return all
856 * outstanding commands back to the Operating System.
857 * Caller should make sure that the following locks are released
858 * before this calling routine: Hardware lock, and io_request_lock.
860 static void qla4xxx_flush_active_srbs(struct scsi_qla_host
*ha
)
866 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
867 for (i
= 0; i
< ha
->host
->can_queue
; i
++) {
868 srb
= qla4xxx_del_from_active_array(ha
, i
);
870 srb
->cmd
->result
= DID_RESET
<< 16;
871 qla4xxx_srb_compl(ha
, srb
);
874 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
879 * qla4xxx_recover_adapter - recovers adapter after a fatal error
880 * @ha: Pointer to host adapter structure.
881 * @renew_ddb_list: Indicates what to do with the adapter's ddb list
882 * after adapter recovery has completed.
883 * 0=preserve ddb list, 1=destroy and rebuild ddb list
885 static int qla4xxx_recover_adapter(struct scsi_qla_host
*ha
,
886 uint8_t renew_ddb_list
)
890 /* Stall incoming I/O until we are done */
891 clear_bit(AF_ONLINE
, &ha
->flags
);
892 DEBUG2(printk("scsi%ld: %s calling qla4xxx_cmd_wait\n", ha
->host_no
,
895 /* Wait for outstanding commands to complete.
896 * Stalls the driver for max 30 secs
898 status
= qla4xxx_cmd_wait(ha
);
900 qla4xxx_disable_intrs(ha
);
902 /* Flush any pending ddb changed AENs */
903 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
905 /* Reset the firmware. If successful, function
906 * returns with ISP interrupts enabled.
908 if (status
== QLA_SUCCESS
) {
909 DEBUG2(printk("scsi%ld: %s - Performing soft reset..\n",
910 ha
->host_no
, __func__
));
911 qla4xxx_flush_active_srbs(ha
);
912 if (ql4xxx_lock_drvr_wait(ha
) == QLA_SUCCESS
)
913 status
= qla4xxx_soft_reset(ha
);
918 /* Flush any pending ddb changed AENs */
919 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
921 /* Re-initialize firmware. If successful, function returns
922 * with ISP interrupts enabled */
923 if (status
== QLA_SUCCESS
) {
924 DEBUG2(printk("scsi%ld: %s - Initializing adapter..\n",
925 ha
->host_no
, __func__
));
927 /* If successful, AF_ONLINE flag set in
928 * qla4xxx_initialize_adapter */
929 status
= qla4xxx_initialize_adapter(ha
, renew_ddb_list
);
932 /* Failed adapter initialization?
933 * Retry reset_ha only if invoked via DPC (DPC_RESET_HA) */
934 if ((test_bit(AF_ONLINE
, &ha
->flags
) == 0) &&
935 (test_bit(DPC_RESET_HA
, &ha
->dpc_flags
))) {
936 /* Adapter initialization failed, see if we can retry
937 * resetting the ha */
938 if (!test_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
)) {
939 ha
->retry_reset_ha_cnt
= MAX_RESET_HA_RETRIES
;
940 DEBUG2(printk("scsi%ld: recover adapter - retrying "
941 "(%d) more times\n", ha
->host_no
,
942 ha
->retry_reset_ha_cnt
));
943 set_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
);
946 if (ha
->retry_reset_ha_cnt
> 0) {
947 /* Schedule another Reset HA--DPC will retry */
948 ha
->retry_reset_ha_cnt
--;
949 DEBUG2(printk("scsi%ld: recover adapter - "
950 "retry remaining %d\n",
952 ha
->retry_reset_ha_cnt
));
956 if (ha
->retry_reset_ha_cnt
== 0) {
957 /* Recover adapter retries have been exhausted.
959 DEBUG2(printk("scsi%ld: recover adapter "
960 "failed - board disabled\n",
962 qla4xxx_flush_active_srbs(ha
);
963 clear_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
);
964 clear_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
965 clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST
,
971 clear_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
972 clear_bit(DPC_RESET_HA_DESTROY_DDB_LIST
, &ha
->dpc_flags
);
973 clear_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
);
976 ha
->adapter_error_count
++;
978 if (status
== QLA_SUCCESS
)
979 qla4xxx_enable_intrs(ha
);
981 DEBUG2(printk("scsi%ld: recover adapter .. DONE\n", ha
->host_no
));
986 * qla4xxx_do_dpc - dpc routine
987 * @data: in our case pointer to adapter structure
989 * This routine is a task that is schedule by the interrupt handler
990 * to perform the background processing for interrupts. We put it
991 * on a task queue that is consumed whenever the scheduler runs; that's
992 * so you can do anything (i.e. put the process to sleep etc). In fact,
993 * the mid-level tries to sleep when it reaches the driver threshold
994 * "host->can_queue". This can cause a panic if we were in our interrupt code.
996 static void qla4xxx_do_dpc(struct work_struct
*work
)
998 struct scsi_qla_host
*ha
=
999 container_of(work
, struct scsi_qla_host
, dpc_work
);
1000 struct ddb_entry
*ddb_entry
, *dtemp
;
1001 int status
= QLA_ERROR
;
1003 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
1004 "flags = 0x%08lx, dpc_flags = 0x%08lx ctrl_stat = 0x%08x\n",
1005 ha
->host_no
, __func__
, ha
->flags
, ha
->dpc_flags
,
1006 readw(&ha
->reg
->ctrl_status
)));
1008 /* Initialization not yet finished. Don't do anything yet. */
1009 if (!test_bit(AF_INIT_DONE
, &ha
->flags
))
1012 if (adapter_up(ha
) ||
1013 test_bit(DPC_RESET_HA
, &ha
->dpc_flags
) ||
1014 test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
) ||
1015 test_bit(DPC_RESET_HA_DESTROY_DDB_LIST
, &ha
->dpc_flags
)) {
1016 if (test_bit(DPC_RESET_HA_DESTROY_DDB_LIST
, &ha
->dpc_flags
) ||
1017 test_bit(DPC_RESET_HA
, &ha
->dpc_flags
))
1018 qla4xxx_recover_adapter(ha
, PRESERVE_DDB_LIST
);
1020 if (test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
)) {
1021 uint8_t wait_time
= RESET_INTR_TOV
;
1023 while ((readw(&ha
->reg
->ctrl_status
) &
1024 (CSR_SOFT_RESET
| CSR_FORCE_SOFT_RESET
)) != 0) {
1025 if (--wait_time
== 0)
1030 DEBUG2(printk("scsi%ld: %s: SR|FSR "
1031 "bit not cleared-- resetting\n",
1032 ha
->host_no
, __func__
));
1033 qla4xxx_flush_active_srbs(ha
);
1034 if (ql4xxx_lock_drvr_wait(ha
) == QLA_SUCCESS
) {
1035 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
1036 status
= qla4xxx_initialize_adapter(ha
,
1039 clear_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
);
1040 if (status
== QLA_SUCCESS
)
1041 qla4xxx_enable_intrs(ha
);
1045 /* ---- process AEN? --- */
1046 if (test_and_clear_bit(DPC_AEN
, &ha
->dpc_flags
))
1047 qla4xxx_process_aen(ha
, PROCESS_ALL_AENS
);
1049 /* ---- Get DHCP IP Address? --- */
1050 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR
, &ha
->dpc_flags
))
1051 qla4xxx_get_dhcp_ip_address(ha
);
1053 /* ---- relogin device? --- */
1054 if (adapter_up(ha
) &&
1055 test_and_clear_bit(DPC_RELOGIN_DEVICE
, &ha
->dpc_flags
)) {
1056 list_for_each_entry_safe(ddb_entry
, dtemp
,
1057 &ha
->ddb_list
, list
) {
1058 if (test_and_clear_bit(DF_RELOGIN
, &ddb_entry
->flags
) &&
1059 atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
)
1060 qla4xxx_relogin_device(ha
, ddb_entry
);
1063 * If mbx cmd times out there is no point
1064 * in continuing further.
1065 * With large no of targets this can hang
1068 if (test_bit(DPC_RESET_HA
, &ha
->dpc_flags
)) {
1069 printk(KERN_WARNING
"scsi%ld: %s: "
1070 "need to reset hba\n",
1071 ha
->host_no
, __func__
);
1079 * qla4xxx_free_adapter - release the adapter
1080 * @ha: pointer to adapter structure
1082 static void qla4xxx_free_adapter(struct scsi_qla_host
*ha
)
1085 if (test_bit(AF_INTERRUPTS_ON
, &ha
->flags
)) {
1086 /* Turn-off interrupts on the card. */
1087 qla4xxx_disable_intrs(ha
);
1090 /* Kill the kernel thread for this host */
1092 destroy_workqueue(ha
->dpc_thread
);
1094 /* Issue Soft Reset to put firmware in unknown state */
1095 if (ql4xxx_lock_drvr_wait(ha
) == QLA_SUCCESS
)
1096 qla4xxx_hw_reset(ha
);
1098 /* Remove timer thread, if present */
1099 if (ha
->timer_active
)
1100 qla4xxx_stop_timer(ha
);
1102 /* Detach interrupts */
1103 if (test_and_clear_bit(AF_IRQ_ATTACHED
, &ha
->flags
))
1104 free_irq(ha
->pdev
->irq
, ha
);
1106 /* free extra memory */
1107 qla4xxx_mem_free(ha
);
1109 pci_disable_device(ha
->pdev
);
1114 * qla4xxx_iospace_config - maps registers
1115 * @ha: pointer to adapter structure
1117 * This routines maps HBA's registers from the pci address space
1118 * into the kernel virtual address space for memory mapped i/o.
1120 static int qla4xxx_iospace_config(struct scsi_qla_host
*ha
)
1122 unsigned long pio
, pio_len
, pio_flags
;
1123 unsigned long mmio
, mmio_len
, mmio_flags
;
1125 pio
= pci_resource_start(ha
->pdev
, 0);
1126 pio_len
= pci_resource_len(ha
->pdev
, 0);
1127 pio_flags
= pci_resource_flags(ha
->pdev
, 0);
1128 if (pio_flags
& IORESOURCE_IO
) {
1129 if (pio_len
< MIN_IOBASE_LEN
) {
1130 dev_warn(&ha
->pdev
->dev
,
1131 "Invalid PCI I/O region size\n");
1135 dev_warn(&ha
->pdev
->dev
, "region #0 not a PIO resource\n");
1139 /* Use MMIO operations for all accesses. */
1140 mmio
= pci_resource_start(ha
->pdev
, 1);
1141 mmio_len
= pci_resource_len(ha
->pdev
, 1);
1142 mmio_flags
= pci_resource_flags(ha
->pdev
, 1);
1144 if (!(mmio_flags
& IORESOURCE_MEM
)) {
1145 dev_err(&ha
->pdev
->dev
,
1146 "region #0 not an MMIO resource, aborting\n");
1148 goto iospace_error_exit
;
1150 if (mmio_len
< MIN_IOBASE_LEN
) {
1151 dev_err(&ha
->pdev
->dev
,
1152 "Invalid PCI mem region size, aborting\n");
1153 goto iospace_error_exit
;
1156 if (pci_request_regions(ha
->pdev
, DRIVER_NAME
)) {
1157 dev_warn(&ha
->pdev
->dev
,
1158 "Failed to reserve PIO/MMIO regions\n");
1160 goto iospace_error_exit
;
1163 ha
->pio_address
= pio
;
1164 ha
->pio_length
= pio_len
;
1165 ha
->reg
= ioremap(mmio
, MIN_IOBASE_LEN
);
1167 dev_err(&ha
->pdev
->dev
,
1168 "cannot remap MMIO, aborting\n");
1170 goto iospace_error_exit
;
1180 * qla4xxx_probe_adapter - callback function to probe HBA
1181 * @pdev: pointer to pci_dev structure
1182 * @pci_device_id: pointer to pci_device entry
1184 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
1185 * It returns zero if successful. It also initializes all data necessary for
1188 static int __devinit
qla4xxx_probe_adapter(struct pci_dev
*pdev
,
1189 const struct pci_device_id
*ent
)
1191 int ret
= -ENODEV
, status
;
1192 struct Scsi_Host
*host
;
1193 struct scsi_qla_host
*ha
;
1194 struct ddb_entry
*ddb_entry
, *ddbtemp
;
1195 uint8_t init_retry_count
= 0;
1198 if (pci_enable_device(pdev
))
1201 host
= scsi_host_alloc(&qla4xxx_driver_template
, sizeof(*ha
));
1204 "qla4xxx: Couldn't allocate host from scsi layer!\n");
1205 goto probe_disable_device
;
1208 /* Clear our data area */
1209 ha
= (struct scsi_qla_host
*) host
->hostdata
;
1210 memset(ha
, 0, sizeof(*ha
));
1212 /* Save the information from PCI BIOS. */
1215 ha
->host_no
= host
->host_no
;
1217 /* Configure PCI I/O space. */
1218 ret
= qla4xxx_iospace_config(ha
);
1222 dev_info(&ha
->pdev
->dev
, "Found an ISP%04x, irq %d, iobase 0x%p\n",
1223 pdev
->device
, pdev
->irq
, ha
->reg
);
1225 qla4xxx_config_dma_addressing(ha
);
1227 /* Initialize lists and spinlocks. */
1228 INIT_LIST_HEAD(&ha
->ddb_list
);
1229 INIT_LIST_HEAD(&ha
->free_srb_q
);
1231 mutex_init(&ha
->mbox_sem
);
1233 spin_lock_init(&ha
->hardware_lock
);
1235 /* Allocate dma buffers */
1236 if (qla4xxx_mem_alloc(ha
)) {
1237 dev_warn(&ha
->pdev
->dev
,
1238 "[ERROR] Failed to allocate memory for adapter\n");
1245 * Initialize the Host adapter request/response queues and
1247 * NOTE: interrupts enabled upon successful completion
1249 status
= qla4xxx_initialize_adapter(ha
, REBUILD_DDB_LIST
);
1250 while (status
== QLA_ERROR
&& init_retry_count
++ < MAX_INIT_RETRIES
) {
1251 DEBUG2(printk("scsi: %s: retrying adapter initialization "
1252 "(%d)\n", __func__
, init_retry_count
));
1253 qla4xxx_soft_reset(ha
);
1254 status
= qla4xxx_initialize_adapter(ha
, REBUILD_DDB_LIST
);
1256 if (status
== QLA_ERROR
) {
1257 dev_warn(&ha
->pdev
->dev
, "Failed to initialize adapter\n");
1263 host
->cmd_per_lun
= 3;
1264 host
->max_channel
= 0;
1265 host
->max_lun
= MAX_LUNS
- 1;
1266 host
->max_id
= MAX_TARGETS
;
1267 host
->max_cmd_len
= IOCB_MAX_CDB_LEN
;
1268 host
->can_queue
= MAX_SRBS
;
1269 host
->transportt
= qla4xxx_scsi_transport
;
1271 ret
= scsi_init_shared_tag_map(host
, MAX_SRBS
);
1273 dev_warn(&ha
->pdev
->dev
, "scsi_init_shared_tag_map failed\n");
1277 /* Startup the kernel thread for this host adapter. */
1278 DEBUG2(printk("scsi: %s: Starting kernel thread for "
1279 "qla4xxx_dpc\n", __func__
));
1280 sprintf(buf
, "qla4xxx_%lu_dpc", ha
->host_no
);
1281 ha
->dpc_thread
= create_singlethread_workqueue(buf
);
1282 if (!ha
->dpc_thread
) {
1283 dev_warn(&ha
->pdev
->dev
, "Unable to start DPC thread!\n");
1287 INIT_WORK(&ha
->dpc_work
, qla4xxx_do_dpc
);
1289 ret
= request_irq(pdev
->irq
, qla4xxx_intr_handler
,
1290 IRQF_DISABLED
| IRQF_SHARED
, "qla4xxx", ha
);
1292 dev_warn(&ha
->pdev
->dev
, "Failed to reserve interrupt %d"
1293 " already in use.\n", pdev
->irq
);
1296 set_bit(AF_IRQ_ATTACHED
, &ha
->flags
);
1297 host
->irq
= pdev
->irq
;
1298 DEBUG(printk("scsi%d: irq %d attached\n", ha
->host_no
, ha
->pdev
->irq
));
1300 qla4xxx_enable_intrs(ha
);
1302 /* Start timer thread. */
1303 qla4xxx_start_timer(ha
, qla4xxx_timer
, 1);
1305 set_bit(AF_INIT_DONE
, &ha
->flags
);
1307 pci_set_drvdata(pdev
, ha
);
1309 ret
= scsi_add_host(host
, &pdev
->dev
);
1313 /* Update transport device information for all devices. */
1314 list_for_each_entry_safe(ddb_entry
, ddbtemp
, &ha
->ddb_list
, list
) {
1315 if (ddb_entry
->fw_ddb_device_state
== DDB_DS_SESSION_ACTIVE
)
1316 if (qla4xxx_add_sess(ddb_entry
))
1321 " QLogic iSCSI HBA Driver version: %s\n"
1322 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
1323 qla4xxx_version_str
, ha
->pdev
->device
, pci_name(ha
->pdev
),
1324 ha
->host_no
, ha
->firmware_version
[0], ha
->firmware_version
[1],
1325 ha
->patch_number
, ha
->build_number
);
1330 qla4xxx_free_ddb_list(ha
);
1331 scsi_remove_host(host
);
1334 qla4xxx_free_adapter(ha
);
1335 scsi_host_put(ha
->host
);
1337 probe_disable_device
:
1338 pci_disable_device(pdev
);
1344 * qla4xxx_remove_adapter - calback function to remove adapter.
1345 * @pci_dev: PCI device pointer
1347 static void __devexit
qla4xxx_remove_adapter(struct pci_dev
*pdev
)
1349 struct scsi_qla_host
*ha
;
1351 ha
= pci_get_drvdata(pdev
);
1353 qla4xxx_disable_intrs(ha
);
1355 while (test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
))
1358 /* remove devs from iscsi_sessions to scsi_devices */
1359 qla4xxx_free_ddb_list(ha
);
1361 scsi_remove_host(ha
->host
);
1363 qla4xxx_free_adapter(ha
);
1365 scsi_host_put(ha
->host
);
1367 pci_set_drvdata(pdev
, NULL
);
1371 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
1374 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1375 * supported addressing method.
1377 static void qla4xxx_config_dma_addressing(struct scsi_qla_host
*ha
)
1381 /* Update our PCI device dma_mask for full 64 bit mask */
1382 if (pci_set_dma_mask(ha
->pdev
, DMA_64BIT_MASK
) == 0) {
1383 if (pci_set_consistent_dma_mask(ha
->pdev
, DMA_64BIT_MASK
)) {
1384 dev_dbg(&ha
->pdev
->dev
,
1385 "Failed to set 64 bit PCI consistent mask; "
1387 retval
= pci_set_consistent_dma_mask(ha
->pdev
,
1391 retval
= pci_set_dma_mask(ha
->pdev
, DMA_32BIT_MASK
);
1394 static int qla4xxx_slave_alloc(struct scsi_device
*sdev
)
1396 struct iscsi_cls_session
*sess
= starget_to_session(sdev
->sdev_target
);
1397 struct ddb_entry
*ddb
= sess
->dd_data
;
1399 sdev
->hostdata
= ddb
;
1400 sdev
->tagged_supported
= 1;
1401 scsi_activate_tcq(sdev
, sdev
->host
->can_queue
);
1405 static int qla4xxx_slave_configure(struct scsi_device
*sdev
)
1407 sdev
->tagged_supported
= 1;
1411 static void qla4xxx_slave_destroy(struct scsi_device
*sdev
)
1413 scsi_deactivate_tcq(sdev
, 1);
1417 * qla4xxx_del_from_active_array - returns an active srb
1418 * @ha: Pointer to host adapter structure.
1419 * @index: index into to the active_array
1421 * This routine removes and returns the srb at the specified index
1423 struct srb
* qla4xxx_del_from_active_array(struct scsi_qla_host
*ha
, uint32_t index
)
1425 struct srb
*srb
= NULL
;
1426 struct scsi_cmnd
*cmd
;
1428 if (!(cmd
= scsi_host_find_tag(ha
->host
, index
)))
1431 if (!(srb
= (struct srb
*)cmd
->host_scribble
))
1434 /* update counters */
1435 if (srb
->flags
& SRB_DMA_VALID
) {
1436 ha
->req_q_count
+= srb
->iocb_cnt
;
1437 ha
->iocb_cnt
-= srb
->iocb_cnt
;
1439 srb
->cmd
->host_scribble
= NULL
;
1445 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
1446 * @ha: actual ha whose done queue will contain the comd returned by firmware.
1447 * @cmd: Scsi Command to wait on.
1449 * This routine waits for the command to be returned by the Firmware
1450 * for some max time.
1452 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host
*ha
,
1453 struct scsi_cmnd
*cmd
)
1457 uint32_t max_wait_time
= EH_WAIT_CMD_TOV
;
1460 /* Checking to see if its returned to OS */
1461 rp
= (struct srb
*) cmd
->SCp
.ptr
;
1468 } while (max_wait_time
--);
1474 * qla4xxx_wait_for_hba_online - waits for HBA to come online
1475 * @ha: Pointer to host adapter structure
1477 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host
*ha
)
1479 unsigned long wait_online
;
1481 wait_online
= jiffies
+ (30 * HZ
);
1482 while (time_before(jiffies
, wait_online
)) {
1486 else if (ha
->retry_reset_ha_cnt
== 0)
1496 * qla4xxx_eh_wait_for_active_target_commands - wait for active cmds to finish.
1497 * @ha: pointer to to HBA
1501 * This function waits for all outstanding commands to a lun to complete. It
1502 * returns 0 if all pending commands are returned and 1 otherwise.
1504 static int qla4xxx_eh_wait_for_active_target_commands(struct scsi_qla_host
*ha
,
1509 struct scsi_cmnd
*cmd
;
1512 * Waiting for all commands for the designated target in the active
1515 for (cnt
= 0; cnt
< ha
->host
->can_queue
; cnt
++) {
1516 cmd
= scsi_host_find_tag(ha
->host
, cnt
);
1517 if (cmd
&& cmd
->device
->id
== t
&& cmd
->device
->lun
== l
) {
1518 if (!qla4xxx_eh_wait_on_command(ha
, cmd
)) {
1528 * qla4xxx_eh_device_reset - callback for target reset.
1529 * @cmd: Pointer to Linux's SCSI command structure
1531 * This routine is called by the Linux OS to reset all luns on the
1534 static int qla4xxx_eh_device_reset(struct scsi_cmnd
*cmd
)
1536 struct scsi_qla_host
*ha
= to_qla_host(cmd
->device
->host
);
1537 struct ddb_entry
*ddb_entry
= cmd
->device
->hostdata
;
1539 int ret
= FAILED
, stat
;
1541 sp
= (struct srb
*) cmd
->SCp
.ptr
;
1542 if (!sp
|| !ddb_entry
)
1545 dev_info(&ha
->pdev
->dev
,
1546 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha
->host_no
,
1547 cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
);
1549 DEBUG2(printk(KERN_INFO
1550 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
1551 "dpc_flags=%lx, status=%x allowed=%d\n", ha
->host_no
,
1552 cmd
, jiffies
, cmd
->timeout_per_command
/ HZ
,
1553 ha
->dpc_flags
, cmd
->result
, cmd
->allowed
));
1555 /* FIXME: wait for hba to go online */
1556 stat
= qla4xxx_reset_lun(ha
, ddb_entry
, cmd
->device
->lun
);
1557 if (stat
!= QLA_SUCCESS
) {
1558 dev_info(&ha
->pdev
->dev
, "DEVICE RESET FAILED. %d\n", stat
);
1559 goto eh_dev_reset_done
;
1563 ha
->marker_needed
= 1;
1566 * If we are coming down the EH path, wait for all commands to complete
1569 if (cmd
->device
->host
->shost_state
== SHOST_RECOVERY
) {
1570 if (qla4xxx_eh_wait_for_active_target_commands(ha
,
1573 dev_info(&ha
->pdev
->dev
,
1574 "DEVICE RESET FAILED - waiting for "
1576 goto eh_dev_reset_done
;
1580 dev_info(&ha
->pdev
->dev
,
1581 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
1582 ha
->host_no
, cmd
->device
->channel
, cmd
->device
->id
,
1593 * qla4xxx_eh_host_reset - kernel callback
1594 * @cmd: Pointer to Linux's SCSI command structure
1596 * This routine is invoked by the Linux kernel to perform fatal error
1597 * recovery on the specified adapter.
1599 static int qla4xxx_eh_host_reset(struct scsi_cmnd
*cmd
)
1601 int return_status
= FAILED
;
1602 struct scsi_qla_host
*ha
;
1604 ha
= (struct scsi_qla_host
*) cmd
->device
->host
->hostdata
;
1606 dev_info(&ha
->pdev
->dev
,
1607 "scsi(%ld:%d:%d:%d): ADAPTER RESET ISSUED.\n", ha
->host_no
,
1608 cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
);
1610 if (qla4xxx_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
1611 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
1612 "DEAD.\n", ha
->host_no
, cmd
->device
->channel
,
1618 if (qla4xxx_recover_adapter(ha
, PRESERVE_DDB_LIST
) == QLA_SUCCESS
) {
1619 return_status
= SUCCESS
;
1622 dev_info(&ha
->pdev
->dev
, "HOST RESET %s.\n",
1623 return_status
== FAILED
? "FAILED" : "SUCCEDED");
1625 return return_status
;
1629 static struct pci_device_id qla4xxx_pci_tbl
[] = {
1631 .vendor
= PCI_VENDOR_ID_QLOGIC
,
1632 .device
= PCI_DEVICE_ID_QLOGIC_ISP4010
,
1633 .subvendor
= PCI_ANY_ID
,
1634 .subdevice
= PCI_ANY_ID
,
1637 .vendor
= PCI_VENDOR_ID_QLOGIC
,
1638 .device
= PCI_DEVICE_ID_QLOGIC_ISP4022
,
1639 .subvendor
= PCI_ANY_ID
,
1640 .subdevice
= PCI_ANY_ID
,
1643 .vendor
= PCI_VENDOR_ID_QLOGIC
,
1644 .device
= PCI_DEVICE_ID_QLOGIC_ISP4032
,
1645 .subvendor
= PCI_ANY_ID
,
1646 .subdevice
= PCI_ANY_ID
,
1650 MODULE_DEVICE_TABLE(pci
, qla4xxx_pci_tbl
);
1652 static struct pci_driver qla4xxx_pci_driver
= {
1653 .name
= DRIVER_NAME
,
1654 .id_table
= qla4xxx_pci_tbl
,
1655 .probe
= qla4xxx_probe_adapter
,
1656 .remove
= qla4xxx_remove_adapter
,
1659 static int __init
qla4xxx_module_init(void)
1663 /* Allocate cache for SRBs. */
1664 srb_cachep
= kmem_cache_create("qla4xxx_srbs", sizeof(struct srb
), 0,
1665 SLAB_HWCACHE_ALIGN
, NULL
);
1666 if (srb_cachep
== NULL
) {
1668 "%s: Unable to allocate SRB cache..."
1669 "Failing load!\n", DRIVER_NAME
);
1674 /* Derive version string. */
1675 strcpy(qla4xxx_version_str
, QLA4XXX_DRIVER_VERSION
);
1676 if (ql4xextended_error_logging
)
1677 strcat(qla4xxx_version_str
, "-debug");
1679 qla4xxx_scsi_transport
=
1680 iscsi_register_transport(&qla4xxx_iscsi_transport
);
1681 if (!qla4xxx_scsi_transport
){
1683 goto release_srb_cache
;
1686 ret
= pci_register_driver(&qla4xxx_pci_driver
);
1688 goto unregister_transport
;
1690 printk(KERN_INFO
"QLogic iSCSI HBA Driver\n");
1693 unregister_transport
:
1694 iscsi_unregister_transport(&qla4xxx_iscsi_transport
);
1696 kmem_cache_destroy(srb_cachep
);
1701 static void __exit
qla4xxx_module_exit(void)
1704 pci_unregister_driver(&qla4xxx_pci_driver
);
1705 iscsi_unregister_transport(&qla4xxx_iscsi_transport
);
1706 kmem_cache_destroy(srb_cachep
);
1709 module_init(qla4xxx_module_init
);
1710 module_exit(qla4xxx_module_exit
);
1712 MODULE_AUTHOR("QLogic Corporation");
1713 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
1714 MODULE_LICENSE("GPL");
1715 MODULE_VERSION(QLA4XXX_DRIVER_VERSION
);