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>
8 #include <linux/slab.h>
10 #include <scsi/scsi_tcq.h>
11 #include <scsi/scsicam.h>
14 #include "ql4_version.h"
17 #include "ql4_inline.h"
22 static char qla4xxx_version_str
[40];
25 * SRB allocation cache
27 static struct kmem_cache
*srb_cachep
;
30 * Module parameter information and variables
32 int ql4xdiscoverywait
= 60;
33 module_param(ql4xdiscoverywait
, int, S_IRUGO
| S_IWUSR
);
34 MODULE_PARM_DESC(ql4xdiscoverywait
, "Discovery wait time");
36 int ql4xdontresethba
= 0;
37 module_param(ql4xdontresethba
, int, S_IRUGO
| S_IWUSR
);
38 MODULE_PARM_DESC(ql4xdontresethba
,
39 "Don't reset the HBA for driver recovery \n"
40 " 0 - It will reset HBA (Default)\n"
41 " 1 - It will NOT reset HBA");
43 int ql4xextended_error_logging
= 0; /* 0 = off, 1 = log errors */
44 module_param(ql4xextended_error_logging
, int, S_IRUGO
| S_IWUSR
);
45 MODULE_PARM_DESC(ql4xextended_error_logging
,
46 "Option to enable extended error logging, "
47 "Default is 0 - no logging, 1 - debug logging");
49 int ql4xenablemsix
= 1;
50 module_param(ql4xenablemsix
, int, S_IRUGO
|S_IWUSR
);
51 MODULE_PARM_DESC(ql4xenablemsix
,
52 "Set to enable MSI or MSI-X interrupt mechanism.\n"
53 " 0 = enable INTx interrupt mechanism.\n"
54 " 1 = enable MSI-X interrupt mechanism (Default).\n"
55 " 2 = enable MSI interrupt mechanism.");
57 #define QL4_DEF_QDEPTH 32
60 * SCSI host template entry points
62 static void qla4xxx_config_dma_addressing(struct scsi_qla_host
*ha
);
65 * iSCSI template entry points
67 static int qla4xxx_tgt_dscvr(struct Scsi_Host
*shost
,
68 enum iscsi_tgt_dscvr type
, uint32_t enable
,
69 struct sockaddr
*dst_addr
);
70 static int qla4xxx_conn_get_param(struct iscsi_cls_conn
*conn
,
71 enum iscsi_param param
, char *buf
);
72 static int qla4xxx_sess_get_param(struct iscsi_cls_session
*sess
,
73 enum iscsi_param param
, char *buf
);
74 static int qla4xxx_host_get_param(struct Scsi_Host
*shost
,
75 enum iscsi_host_param param
, char *buf
);
76 static void qla4xxx_recovery_timedout(struct iscsi_cls_session
*session
);
77 static enum blk_eh_timer_return
qla4xxx_eh_cmd_timed_out(struct scsi_cmnd
*sc
);
80 * SCSI host template entry points
82 static int qla4xxx_queuecommand(struct scsi_cmnd
*cmd
,
83 void (*done
) (struct scsi_cmnd
*));
84 static int qla4xxx_eh_abort(struct scsi_cmnd
*cmd
);
85 static int qla4xxx_eh_device_reset(struct scsi_cmnd
*cmd
);
86 static int qla4xxx_eh_target_reset(struct scsi_cmnd
*cmd
);
87 static int qla4xxx_eh_host_reset(struct scsi_cmnd
*cmd
);
88 static int qla4xxx_slave_alloc(struct scsi_device
*device
);
89 static int qla4xxx_slave_configure(struct scsi_device
*device
);
90 static void qla4xxx_slave_destroy(struct scsi_device
*sdev
);
91 static void qla4xxx_scan_start(struct Scsi_Host
*shost
);
93 static struct qla4_8xxx_legacy_intr_set legacy_intr
[] =
94 QLA82XX_LEGACY_INTR_CONFIG
;
96 static struct scsi_host_template qla4xxx_driver_template
= {
97 .module
= THIS_MODULE
,
99 .proc_name
= DRIVER_NAME
,
100 .queuecommand
= qla4xxx_queuecommand
,
102 .eh_abort_handler
= qla4xxx_eh_abort
,
103 .eh_device_reset_handler
= qla4xxx_eh_device_reset
,
104 .eh_target_reset_handler
= qla4xxx_eh_target_reset
,
105 .eh_host_reset_handler
= qla4xxx_eh_host_reset
,
106 .eh_timed_out
= qla4xxx_eh_cmd_timed_out
,
108 .slave_configure
= qla4xxx_slave_configure
,
109 .slave_alloc
= qla4xxx_slave_alloc
,
110 .slave_destroy
= qla4xxx_slave_destroy
,
112 .scan_finished
= iscsi_scan_finished
,
113 .scan_start
= qla4xxx_scan_start
,
117 .use_clustering
= ENABLE_CLUSTERING
,
118 .sg_tablesize
= SG_ALL
,
120 .max_sectors
= 0xFFFF,
123 static struct iscsi_transport qla4xxx_iscsi_transport
= {
124 .owner
= THIS_MODULE
,
126 .caps
= CAP_FW_DB
| CAP_SENDTARGETS_OFFLOAD
|
127 CAP_DATA_PATH_OFFLOAD
,
128 .param_mask
= ISCSI_CONN_PORT
| ISCSI_CONN_ADDRESS
|
129 ISCSI_TARGET_NAME
| ISCSI_TPGT
|
131 .host_param_mask
= ISCSI_HOST_HWADDRESS
|
132 ISCSI_HOST_IPADDRESS
|
133 ISCSI_HOST_INITIATOR_NAME
,
134 .tgt_dscvr
= qla4xxx_tgt_dscvr
,
135 .get_conn_param
= qla4xxx_conn_get_param
,
136 .get_session_param
= qla4xxx_sess_get_param
,
137 .get_host_param
= qla4xxx_host_get_param
,
138 .session_recovery_timedout
= qla4xxx_recovery_timedout
,
141 static struct scsi_transport_template
*qla4xxx_scsi_transport
;
143 static enum blk_eh_timer_return
qla4xxx_eh_cmd_timed_out(struct scsi_cmnd
*sc
)
145 struct iscsi_cls_session
*session
;
146 struct ddb_entry
*ddb_entry
;
148 session
= starget_to_session(scsi_target(sc
->device
));
149 ddb_entry
= session
->dd_data
;
151 /* if we are not logged in then the LLD is going to clean up the cmd */
152 if (atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
)
153 return BLK_EH_RESET_TIMER
;
155 return BLK_EH_NOT_HANDLED
;
158 static void qla4xxx_recovery_timedout(struct iscsi_cls_session
*session
)
160 struct ddb_entry
*ddb_entry
= session
->dd_data
;
161 struct scsi_qla_host
*ha
= ddb_entry
->ha
;
163 if (atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
) {
164 atomic_set(&ddb_entry
->state
, DDB_STATE_DEAD
);
166 DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout "
167 "of (%d) secs exhausted, marking device DEAD.\n",
168 ha
->host_no
, __func__
, ddb_entry
->fw_ddb_index
,
169 QL4_SESS_RECOVERY_TMO
));
173 static int qla4xxx_host_get_param(struct Scsi_Host
*shost
,
174 enum iscsi_host_param param
, char *buf
)
176 struct scsi_qla_host
*ha
= to_qla_host(shost
);
180 case ISCSI_HOST_PARAM_HWADDRESS
:
181 len
= sysfs_format_mac(buf
, ha
->my_mac
, MAC_ADDR_LEN
);
183 case ISCSI_HOST_PARAM_IPADDRESS
:
184 len
= sprintf(buf
, "%d.%d.%d.%d\n", ha
->ip_address
[0],
185 ha
->ip_address
[1], ha
->ip_address
[2],
188 case ISCSI_HOST_PARAM_INITIATOR_NAME
:
189 len
= sprintf(buf
, "%s\n", ha
->name_string
);
198 static int qla4xxx_sess_get_param(struct iscsi_cls_session
*sess
,
199 enum iscsi_param param
, char *buf
)
201 struct ddb_entry
*ddb_entry
= sess
->dd_data
;
205 case ISCSI_PARAM_TARGET_NAME
:
206 len
= snprintf(buf
, PAGE_SIZE
- 1, "%s\n",
207 ddb_entry
->iscsi_name
);
209 case ISCSI_PARAM_TPGT
:
210 len
= sprintf(buf
, "%u\n", ddb_entry
->tpgt
);
212 case ISCSI_PARAM_TARGET_ALIAS
:
213 len
= snprintf(buf
, PAGE_SIZE
- 1, "%s\n",
214 ddb_entry
->iscsi_alias
);
223 static int qla4xxx_conn_get_param(struct iscsi_cls_conn
*conn
,
224 enum iscsi_param param
, char *buf
)
226 struct iscsi_cls_session
*session
;
227 struct ddb_entry
*ddb_entry
;
230 session
= iscsi_dev_to_session(conn
->dev
.parent
);
231 ddb_entry
= session
->dd_data
;
234 case ISCSI_PARAM_CONN_PORT
:
235 len
= sprintf(buf
, "%hu\n", ddb_entry
->port
);
237 case ISCSI_PARAM_CONN_ADDRESS
:
238 /* TODO: what are the ipv6 bits */
239 len
= sprintf(buf
, "%pI4\n", &ddb_entry
->ip_addr
);
248 static int qla4xxx_tgt_dscvr(struct Scsi_Host
*shost
,
249 enum iscsi_tgt_dscvr type
, uint32_t enable
,
250 struct sockaddr
*dst_addr
)
252 struct scsi_qla_host
*ha
;
253 struct sockaddr_in
*addr
;
254 struct sockaddr_in6
*addr6
;
257 ha
= (struct scsi_qla_host
*) shost
->hostdata
;
260 case ISCSI_TGT_DSCVR_SEND_TARGETS
:
261 if (dst_addr
->sa_family
== AF_INET
) {
262 addr
= (struct sockaddr_in
*)dst_addr
;
263 if (qla4xxx_send_tgts(ha
, (char *)&addr
->sin_addr
,
264 addr
->sin_port
) != QLA_SUCCESS
)
266 } else if (dst_addr
->sa_family
== AF_INET6
) {
268 * TODO: fix qla4xxx_send_tgts
270 addr6
= (struct sockaddr_in6
*)dst_addr
;
271 if (qla4xxx_send_tgts(ha
, (char *)&addr6
->sin6_addr
,
272 addr6
->sin6_port
) != QLA_SUCCESS
)
283 void qla4xxx_destroy_sess(struct ddb_entry
*ddb_entry
)
285 if (!ddb_entry
->sess
)
288 if (ddb_entry
->conn
) {
289 atomic_set(&ddb_entry
->state
, DDB_STATE_DEAD
);
290 iscsi_remove_session(ddb_entry
->sess
);
292 iscsi_free_session(ddb_entry
->sess
);
295 int qla4xxx_add_sess(struct ddb_entry
*ddb_entry
)
299 ddb_entry
->sess
->recovery_tmo
= QL4_SESS_RECOVERY_TMO
;
301 err
= iscsi_add_session(ddb_entry
->sess
, ddb_entry
->fw_ddb_index
);
303 DEBUG2(printk(KERN_ERR
"Could not add session.\n"));
307 ddb_entry
->conn
= iscsi_create_conn(ddb_entry
->sess
, 0, 0);
308 if (!ddb_entry
->conn
) {
309 iscsi_remove_session(ddb_entry
->sess
);
310 DEBUG2(printk(KERN_ERR
"Could not add connection.\n"));
314 /* finally ready to go */
315 iscsi_unblock_session(ddb_entry
->sess
);
319 struct ddb_entry
*qla4xxx_alloc_sess(struct scsi_qla_host
*ha
)
321 struct ddb_entry
*ddb_entry
;
322 struct iscsi_cls_session
*sess
;
324 sess
= iscsi_alloc_session(ha
->host
, &qla4xxx_iscsi_transport
,
325 sizeof(struct ddb_entry
));
329 ddb_entry
= sess
->dd_data
;
330 memset(ddb_entry
, 0, sizeof(*ddb_entry
));
332 ddb_entry
->sess
= sess
;
336 static void qla4xxx_scan_start(struct Scsi_Host
*shost
)
338 struct scsi_qla_host
*ha
= shost_priv(shost
);
339 struct ddb_entry
*ddb_entry
, *ddbtemp
;
341 /* finish setup of sessions that were already setup in firmware */
342 list_for_each_entry_safe(ddb_entry
, ddbtemp
, &ha
->ddb_list
, list
) {
343 if (ddb_entry
->fw_ddb_device_state
== DDB_DS_SESSION_ACTIVE
)
344 qla4xxx_add_sess(ddb_entry
);
352 static void qla4xxx_start_timer(struct scsi_qla_host
*ha
, void *func
,
353 unsigned long interval
)
355 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
356 __func__
, ha
->host
->host_no
));
357 init_timer(&ha
->timer
);
358 ha
->timer
.expires
= jiffies
+ interval
* HZ
;
359 ha
->timer
.data
= (unsigned long)ha
;
360 ha
->timer
.function
= (void (*)(unsigned long))func
;
361 add_timer(&ha
->timer
);
362 ha
->timer_active
= 1;
365 static void qla4xxx_stop_timer(struct scsi_qla_host
*ha
)
367 del_timer_sync(&ha
->timer
);
368 ha
->timer_active
= 0;
372 * qla4xxx_mark_device_missing - mark a device as missing.
373 * @ha: Pointer to host adapter structure.
374 * @ddb_entry: Pointer to device database entry
376 * This routine marks a device missing and close connection.
378 void qla4xxx_mark_device_missing(struct scsi_qla_host
*ha
,
379 struct ddb_entry
*ddb_entry
)
381 if ((atomic_read(&ddb_entry
->state
) != DDB_STATE_DEAD
)) {
382 atomic_set(&ddb_entry
->state
, DDB_STATE_MISSING
);
383 DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n",
384 ha
->host_no
, ddb_entry
->fw_ddb_index
));
386 DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha
->host_no
,
387 ddb_entry
->fw_ddb_index
))
389 iscsi_block_session(ddb_entry
->sess
);
390 iscsi_conn_error_event(ddb_entry
->conn
, ISCSI_ERR_CONN_FAILED
);
394 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
395 * @ha: Pointer to host adapter structure.
397 * This routine marks a device missing and resets the relogin retry count.
399 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host
*ha
)
401 struct ddb_entry
*ddb_entry
, *ddbtemp
;
402 list_for_each_entry_safe(ddb_entry
, ddbtemp
, &ha
->ddb_list
, list
) {
403 qla4xxx_mark_device_missing(ha
, ddb_entry
);
407 static struct srb
* qla4xxx_get_new_srb(struct scsi_qla_host
*ha
,
408 struct ddb_entry
*ddb_entry
,
409 struct scsi_cmnd
*cmd
,
410 void (*done
)(struct scsi_cmnd
*))
414 srb
= mempool_alloc(ha
->srb_mempool
, GFP_ATOMIC
);
418 kref_init(&srb
->srb_ref
);
420 srb
->ddb
= ddb_entry
;
423 CMD_SP(cmd
) = (void *)srb
;
424 cmd
->scsi_done
= done
;
429 static void qla4xxx_srb_free_dma(struct scsi_qla_host
*ha
, struct srb
*srb
)
431 struct scsi_cmnd
*cmd
= srb
->cmd
;
433 if (srb
->flags
& SRB_DMA_VALID
) {
435 srb
->flags
&= ~SRB_DMA_VALID
;
440 void qla4xxx_srb_compl(struct kref
*ref
)
442 struct srb
*srb
= container_of(ref
, struct srb
, srb_ref
);
443 struct scsi_cmnd
*cmd
= srb
->cmd
;
444 struct scsi_qla_host
*ha
= srb
->ha
;
446 qla4xxx_srb_free_dma(ha
, srb
);
448 mempool_free(srb
, ha
->srb_mempool
);
454 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
455 * @cmd: Pointer to Linux's SCSI command structure
456 * @done_fn: Function that the driver calls to notify the SCSI mid-layer
457 * that the command has been processed.
460 * This routine is invoked by Linux to send a SCSI command to the driver.
461 * The mid-level driver tries to ensure that queuecommand never gets
462 * invoked concurrently with itself or the interrupt handler (although
463 * the interrupt handler may call this routine as part of request-
464 * completion handling). Unfortunely, it sometimes calls the scheduler
465 * in interrupt context which is a big NO! NO!.
467 static int qla4xxx_queuecommand(struct scsi_cmnd
*cmd
,
468 void (*done
)(struct scsi_cmnd
*))
470 struct scsi_qla_host
*ha
= to_qla_host(cmd
->device
->host
);
471 struct ddb_entry
*ddb_entry
= cmd
->device
->hostdata
;
472 struct iscsi_cls_session
*sess
= ddb_entry
->sess
;
476 if (test_bit(AF_EEH_BUSY
, &ha
->flags
)) {
477 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE
, &ha
->flags
))
478 cmd
->result
= DID_NO_CONNECT
<< 16;
480 cmd
->result
= DID_REQUEUE
<< 16;
481 goto qc_fail_command
;
485 cmd
->result
= DID_IMM_RETRY
<< 16;
486 goto qc_fail_command
;
489 rval
= iscsi_session_chkready(sess
);
492 goto qc_fail_command
;
495 if (atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
) {
496 if (atomic_read(&ddb_entry
->state
) == DDB_STATE_DEAD
) {
497 cmd
->result
= DID_NO_CONNECT
<< 16;
498 goto qc_fail_command
;
500 return SCSI_MLQUEUE_TARGET_BUSY
;
503 if (test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
) ||
504 test_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
) ||
505 test_bit(DPC_RESET_HA
, &ha
->dpc_flags
) ||
506 test_bit(DPC_HA_UNRECOVERABLE
, &ha
->dpc_flags
) ||
507 test_bit(DPC_HA_NEED_QUIESCENT
, &ha
->dpc_flags
) ||
508 !test_bit(AF_ONLINE
, &ha
->flags
) ||
509 test_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
))
512 spin_unlock_irq(ha
->host
->host_lock
);
514 srb
= qla4xxx_get_new_srb(ha
, ddb_entry
, cmd
, done
);
516 goto qc_host_busy_lock
;
518 rval
= qla4xxx_send_command_to_isp(ha
, srb
);
519 if (rval
!= QLA_SUCCESS
)
520 goto qc_host_busy_free_sp
;
522 spin_lock_irq(ha
->host
->host_lock
);
525 qc_host_busy_free_sp
:
526 qla4xxx_srb_free_dma(ha
, srb
);
527 mempool_free(srb
, ha
->srb_mempool
);
530 spin_lock_irq(ha
->host
->host_lock
);
533 return SCSI_MLQUEUE_HOST_BUSY
;
542 * qla4xxx_mem_free - frees memory allocated to adapter
543 * @ha: Pointer to host adapter structure.
545 * Frees memory previously allocated by qla4xxx_mem_alloc
547 static void qla4xxx_mem_free(struct scsi_qla_host
*ha
)
550 dma_free_coherent(&ha
->pdev
->dev
, ha
->queues_len
, ha
->queues
,
556 ha
->request_ring
= NULL
;
558 ha
->response_ring
= NULL
;
559 ha
->response_dma
= 0;
560 ha
->shadow_regs
= NULL
;
561 ha
->shadow_regs_dma
= 0;
565 mempool_destroy(ha
->srb_mempool
);
567 ha
->srb_mempool
= NULL
;
569 /* release io space registers */
570 if (is_qla8022(ha
)) {
573 (struct device_reg_82xx __iomem
*)ha
->nx_pcibase
);
576 pci_release_regions(ha
->pdev
);
580 * qla4xxx_mem_alloc - allocates memory for use by adapter.
581 * @ha: Pointer to host adapter structure
583 * Allocates DMA memory for request and response queues. Also allocates memory
586 static int qla4xxx_mem_alloc(struct scsi_qla_host
*ha
)
590 /* Allocate contiguous block of DMA memory for queues. */
591 ha
->queues_len
= ((REQUEST_QUEUE_DEPTH
* QUEUE_SIZE
) +
592 (RESPONSE_QUEUE_DEPTH
* QUEUE_SIZE
) +
593 sizeof(struct shadow_regs
) +
595 (PAGE_SIZE
- 1)) & ~(PAGE_SIZE
- 1);
596 ha
->queues
= dma_alloc_coherent(&ha
->pdev
->dev
, ha
->queues_len
,
597 &ha
->queues_dma
, GFP_KERNEL
);
598 if (ha
->queues
== NULL
) {
599 ql4_printk(KERN_WARNING
, ha
,
600 "Memory Allocation failed - queues.\n");
602 goto mem_alloc_error_exit
;
604 memset(ha
->queues
, 0, ha
->queues_len
);
607 * As per RISC alignment requirements -- the bus-address must be a
608 * multiple of the request-ring size (in bytes).
611 if ((unsigned long)ha
->queues_dma
& (MEM_ALIGN_VALUE
- 1))
612 align
= MEM_ALIGN_VALUE
- ((unsigned long)ha
->queues_dma
&
613 (MEM_ALIGN_VALUE
- 1));
615 /* Update request and response queue pointers. */
616 ha
->request_dma
= ha
->queues_dma
+ align
;
617 ha
->request_ring
= (struct queue_entry
*) (ha
->queues
+ align
);
618 ha
->response_dma
= ha
->queues_dma
+ align
+
619 (REQUEST_QUEUE_DEPTH
* QUEUE_SIZE
);
620 ha
->response_ring
= (struct queue_entry
*) (ha
->queues
+ align
+
621 (REQUEST_QUEUE_DEPTH
*
623 ha
->shadow_regs_dma
= ha
->queues_dma
+ align
+
624 (REQUEST_QUEUE_DEPTH
* QUEUE_SIZE
) +
625 (RESPONSE_QUEUE_DEPTH
* QUEUE_SIZE
);
626 ha
->shadow_regs
= (struct shadow_regs
*) (ha
->queues
+ align
+
627 (REQUEST_QUEUE_DEPTH
*
629 (RESPONSE_QUEUE_DEPTH
*
632 /* Allocate memory for srb pool. */
633 ha
->srb_mempool
= mempool_create(SRB_MIN_REQ
, mempool_alloc_slab
,
634 mempool_free_slab
, srb_cachep
);
635 if (ha
->srb_mempool
== NULL
) {
636 ql4_printk(KERN_WARNING
, ha
,
637 "Memory Allocation failed - SRB Pool.\n");
639 goto mem_alloc_error_exit
;
644 mem_alloc_error_exit
:
645 qla4xxx_mem_free(ha
);
650 * qla4_8xxx_check_fw_alive - Check firmware health
651 * @ha: Pointer to host adapter structure.
655 static void qla4_8xxx_check_fw_alive(struct scsi_qla_host
*ha
)
657 uint32_t fw_heartbeat_counter
, halt_status
;
659 fw_heartbeat_counter
= qla4_8xxx_rd_32(ha
, QLA82XX_PEG_ALIVE_COUNTER
);
660 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
661 if (fw_heartbeat_counter
== 0xffffffff) {
662 DEBUG2(printk(KERN_WARNING
"scsi%ld: %s: Device in frozen "
663 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
664 ha
->host_no
, __func__
));
668 if (ha
->fw_heartbeat_counter
== fw_heartbeat_counter
) {
669 ha
->seconds_since_last_heartbeat
++;
670 /* FW not alive after 2 seconds */
671 if (ha
->seconds_since_last_heartbeat
== 2) {
672 ha
->seconds_since_last_heartbeat
= 0;
673 halt_status
= qla4_8xxx_rd_32(ha
,
674 QLA82XX_PEG_HALT_STATUS1
);
676 /* Since we cannot change dev_state in interrupt
677 * context, set appropriate DPC flag then wakeup
679 if (halt_status
& HALT_STATUS_UNRECOVERABLE
)
680 set_bit(DPC_HA_UNRECOVERABLE
, &ha
->dpc_flags
);
682 printk("scsi%ld: %s: detect abort needed!\n",
683 ha
->host_no
, __func__
);
684 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
686 qla4xxx_wake_dpc(ha
);
687 qla4xxx_mailbox_premature_completion(ha
);
690 ha
->seconds_since_last_heartbeat
= 0;
692 ha
->fw_heartbeat_counter
= fw_heartbeat_counter
;
696 * qla4_8xxx_watchdog - Poll dev state
697 * @ha: Pointer to host adapter structure.
701 void qla4_8xxx_watchdog(struct scsi_qla_host
*ha
)
705 dev_state
= qla4_8xxx_rd_32(ha
, QLA82XX_CRB_DEV_STATE
);
707 /* don't poll if reset is going on */
708 if (!test_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
)) {
709 if (dev_state
== QLA82XX_DEV_NEED_RESET
&&
710 !test_bit(DPC_RESET_HA
, &ha
->dpc_flags
)) {
711 printk("scsi%ld: %s: HW State: NEED RESET!\n",
712 ha
->host_no
, __func__
);
713 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
714 qla4xxx_wake_dpc(ha
);
715 qla4xxx_mailbox_premature_completion(ha
);
716 } else if (dev_state
== QLA82XX_DEV_NEED_QUIESCENT
&&
717 !test_bit(DPC_HA_NEED_QUIESCENT
, &ha
->dpc_flags
)) {
718 printk("scsi%ld: %s: HW State: NEED QUIES!\n",
719 ha
->host_no
, __func__
);
720 set_bit(DPC_HA_NEED_QUIESCENT
, &ha
->dpc_flags
);
721 qla4xxx_wake_dpc(ha
);
723 /* Check firmware health */
724 qla4_8xxx_check_fw_alive(ha
);
730 * qla4xxx_timer - checks every second for work to do.
731 * @ha: Pointer to host adapter structure.
733 static void qla4xxx_timer(struct scsi_qla_host
*ha
)
735 struct ddb_entry
*ddb_entry
, *dtemp
;
739 /* If we are in the middle of AER/EEH processing
740 * skip any processing and reschedule the timer
742 if (test_bit(AF_EEH_BUSY
, &ha
->flags
)) {
743 mod_timer(&ha
->timer
, jiffies
+ HZ
);
747 /* Hardware read to trigger an EEH error during mailbox waits. */
748 if (!pci_channel_offline(ha
->pdev
))
749 pci_read_config_word(ha
->pdev
, PCI_VENDOR_ID
, &w
);
751 if (test_bit(AF_HBA_GOING_AWAY
, &ha
->flags
)) {
752 DEBUG2(ql4_printk(KERN_INFO
, ha
, "%s exited. HBA GOING AWAY\n",
757 if (is_qla8022(ha
)) {
758 qla4_8xxx_watchdog(ha
);
761 /* Search for relogin's to time-out and port down retry. */
762 list_for_each_entry_safe(ddb_entry
, dtemp
, &ha
->ddb_list
, list
) {
763 /* Count down time between sending relogins */
764 if (adapter_up(ha
) &&
765 !test_bit(DF_RELOGIN
, &ddb_entry
->flags
) &&
766 atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
) {
767 if (atomic_read(&ddb_entry
->retry_relogin_timer
) !=
769 if (atomic_read(&ddb_entry
->retry_relogin_timer
)
771 atomic_set(&ddb_entry
->
774 set_bit(DPC_RELOGIN_DEVICE
,
776 set_bit(DF_RELOGIN
, &ddb_entry
->flags
);
777 DEBUG2(printk("scsi%ld: %s: ddb [%d]"
779 ha
->host_no
, __func__
,
780 ddb_entry
->fw_ddb_index
));
782 atomic_dec(&ddb_entry
->
783 retry_relogin_timer
);
787 /* Wait for relogin to timeout */
788 if (atomic_read(&ddb_entry
->relogin_timer
) &&
789 (atomic_dec_and_test(&ddb_entry
->relogin_timer
) != 0)) {
791 * If the relogin times out and the device is
792 * still NOT ONLINE then try and relogin again.
794 if (atomic_read(&ddb_entry
->state
) !=
796 ddb_entry
->fw_ddb_device_state
==
797 DDB_DS_SESSION_FAILED
) {
798 /* Reset retry relogin timer */
799 atomic_inc(&ddb_entry
->relogin_retry_count
);
800 DEBUG2(printk("scsi%ld: ddb [%d] relogin"
801 " timed out-retrying"
804 ddb_entry
->fw_ddb_index
,
805 atomic_read(&ddb_entry
->
806 relogin_retry_count
))
809 DEBUG(printk("scsi%ld:%d:%d: ddb [%d] "
810 "initate relogin after"
812 ha
->host_no
, ddb_entry
->bus
,
814 ddb_entry
->fw_ddb_index
,
815 ddb_entry
->default_time2wait
+ 4)
818 atomic_set(&ddb_entry
->retry_relogin_timer
,
819 ddb_entry
->default_time2wait
+ 4);
824 if (!is_qla8022(ha
)) {
825 /* Check for heartbeat interval. */
826 if (ha
->firmware_options
& FWOPT_HEARTBEAT_ENABLE
&&
827 ha
->heartbeat_interval
!= 0) {
828 ha
->seconds_since_last_heartbeat
++;
829 if (ha
->seconds_since_last_heartbeat
>
830 ha
->heartbeat_interval
+ 2)
831 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
835 /* Wakeup the dpc routine for this adapter, if needed. */
837 test_bit(DPC_RESET_HA
, &ha
->dpc_flags
) ||
838 test_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
) ||
839 test_bit(DPC_RELOGIN_DEVICE
, &ha
->dpc_flags
) ||
840 test_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
) ||
841 test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
) ||
842 test_bit(DPC_GET_DHCP_IP_ADDR
, &ha
->dpc_flags
) ||
843 test_bit(DPC_LINK_CHANGED
, &ha
->dpc_flags
) ||
844 test_bit(DPC_HA_UNRECOVERABLE
, &ha
->dpc_flags
) ||
845 test_bit(DPC_HA_NEED_QUIESCENT
, &ha
->dpc_flags
) ||
846 test_bit(DPC_AEN
, &ha
->dpc_flags
)) &&
847 !test_bit(AF_DPC_SCHEDULED
, &ha
->flags
) &&
849 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
850 " - dpc flags = 0x%lx\n",
851 ha
->host_no
, __func__
, ha
->dpc_flags
));
852 qla4xxx_wake_dpc(ha
);
855 /* Reschedule timer thread to call us back in one second */
856 mod_timer(&ha
->timer
, jiffies
+ HZ
);
858 DEBUG2(ha
->seconds_since_last_intr
++);
862 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
863 * @ha: Pointer to host adapter structure.
865 * This routine stalls the driver until all outstanding commands are returned.
866 * Caller must release the Hardware Lock prior to calling this routine.
868 static int qla4xxx_cmd_wait(struct scsi_qla_host
*ha
)
872 struct scsi_cmnd
*cmd
;
874 unsigned long wtime
= jiffies
+ (WAIT_CMD_TOV
* HZ
);
876 DEBUG2(ql4_printk(KERN_INFO
, ha
, "Wait up to %d seconds for cmds to "
877 "complete\n", WAIT_CMD_TOV
));
879 while (!time_after_eq(jiffies
, wtime
)) {
880 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
881 /* Find a command that hasn't completed. */
882 for (index
= 0; index
< ha
->host
->can_queue
; index
++) {
883 cmd
= scsi_host_find_tag(ha
->host
, index
);
885 * We cannot just check if the index is valid,
886 * becase if we are run from the scsi eh, then
887 * the scsi/block layer is going to prevent
888 * the tag from being released.
890 if (cmd
!= NULL
&& CMD_SP(cmd
))
893 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
895 /* If No Commands are pending, wait is complete */
896 if (index
== ha
->host
->can_queue
)
901 /* If we timed out on waiting for commands to come back
906 int qla4xxx_hw_reset(struct scsi_qla_host
*ha
)
908 uint32_t ctrl_status
;
909 unsigned long flags
= 0;
911 DEBUG2(printk(KERN_ERR
"scsi%ld: %s\n", ha
->host_no
, __func__
));
913 if (ql4xxx_lock_drvr_wait(ha
) != QLA_SUCCESS
)
916 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
919 * If the SCSI Reset Interrupt bit is set, clear it.
920 * Otherwise, the Soft Reset won't work.
922 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
923 if ((ctrl_status
& CSR_SCSI_RESET_INTR
) != 0)
924 writel(set_rmask(CSR_SCSI_RESET_INTR
), &ha
->reg
->ctrl_status
);
926 /* Issue Soft Reset */
927 writel(set_rmask(CSR_SOFT_RESET
), &ha
->reg
->ctrl_status
);
928 readl(&ha
->reg
->ctrl_status
);
930 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
935 * qla4xxx_soft_reset - performs soft reset.
936 * @ha: Pointer to host adapter structure.
938 int qla4xxx_soft_reset(struct scsi_qla_host
*ha
)
940 uint32_t max_wait_time
;
941 unsigned long flags
= 0;
943 uint32_t ctrl_status
;
945 status
= qla4xxx_hw_reset(ha
);
946 if (status
!= QLA_SUCCESS
)
950 /* Wait until the Network Reset Intr bit is cleared */
951 max_wait_time
= RESET_INTR_TOV
;
953 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
954 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
955 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
957 if ((ctrl_status
& CSR_NET_RESET_INTR
) == 0)
961 } while ((--max_wait_time
));
963 if ((ctrl_status
& CSR_NET_RESET_INTR
) != 0) {
964 DEBUG2(printk(KERN_WARNING
965 "scsi%ld: Network Reset Intr not cleared by "
966 "Network function, clearing it now!\n",
968 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
969 writel(set_rmask(CSR_NET_RESET_INTR
), &ha
->reg
->ctrl_status
);
970 readl(&ha
->reg
->ctrl_status
);
971 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
974 /* Wait until the firmware tells us the Soft Reset is done */
975 max_wait_time
= SOFT_RESET_TOV
;
977 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
978 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
979 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
981 if ((ctrl_status
& CSR_SOFT_RESET
) == 0) {
982 status
= QLA_SUCCESS
;
987 } while ((--max_wait_time
));
990 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
991 * after the soft reset has taken place.
993 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
994 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
995 if ((ctrl_status
& CSR_SCSI_RESET_INTR
) != 0) {
996 writel(set_rmask(CSR_SCSI_RESET_INTR
), &ha
->reg
->ctrl_status
);
997 readl(&ha
->reg
->ctrl_status
);
999 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1001 /* If soft reset fails then most probably the bios on other
1002 * function is also enabled.
1003 * Since the initialization is sequential the other fn
1004 * wont be able to acknowledge the soft reset.
1005 * Issue a force soft reset to workaround this scenario.
1007 if (max_wait_time
== 0) {
1008 /* Issue Force Soft Reset */
1009 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1010 writel(set_rmask(CSR_FORCE_SOFT_RESET
), &ha
->reg
->ctrl_status
);
1011 readl(&ha
->reg
->ctrl_status
);
1012 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1013 /* Wait until the firmware tells us the Soft Reset is done */
1014 max_wait_time
= SOFT_RESET_TOV
;
1016 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1017 ctrl_status
= readw(&ha
->reg
->ctrl_status
);
1018 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1020 if ((ctrl_status
& CSR_FORCE_SOFT_RESET
) == 0) {
1021 status
= QLA_SUCCESS
;
1026 } while ((--max_wait_time
));
1033 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
1034 * @ha: Pointer to host adapter structure.
1035 * @res: returned scsi status
1037 * This routine is called just prior to a HARD RESET to return all
1038 * outstanding commands back to the Operating System.
1039 * Caller should make sure that the following locks are released
1040 * before this calling routine: Hardware lock, and io_request_lock.
1042 static void qla4xxx_abort_active_cmds(struct scsi_qla_host
*ha
, int res
)
1046 unsigned long flags
;
1048 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1049 for (i
= 0; i
< ha
->host
->can_queue
; i
++) {
1050 srb
= qla4xxx_del_from_active_array(ha
, i
);
1052 srb
->cmd
->result
= res
;
1053 kref_put(&srb
->srb_ref
, qla4xxx_srb_compl
);
1056 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1059 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host
*ha
)
1061 clear_bit(AF_ONLINE
, &ha
->flags
);
1063 /* Disable the board */
1064 ql4_printk(KERN_INFO
, ha
, "Disabling the board\n");
1065 set_bit(AF_HBA_GOING_AWAY
, &ha
->flags
);
1067 qla4xxx_abort_active_cmds(ha
, DID_NO_CONNECT
<< 16);
1068 qla4xxx_mark_all_devices_missing(ha
);
1069 clear_bit(AF_INIT_DONE
, &ha
->flags
);
1073 * qla4xxx_recover_adapter - recovers adapter after a fatal error
1074 * @ha: Pointer to host adapter structure.
1076 static int qla4xxx_recover_adapter(struct scsi_qla_host
*ha
)
1078 int status
= QLA_ERROR
;
1079 uint8_t reset_chip
= 0;
1081 /* Stall incoming I/O until we are done */
1082 scsi_block_requests(ha
->host
);
1083 clear_bit(AF_ONLINE
, &ha
->flags
);
1085 DEBUG2(ql4_printk(KERN_INFO
, ha
, "%s: adapter OFFLINE\n", __func__
));
1087 set_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
);
1089 if (test_bit(DPC_RESET_HA
, &ha
->dpc_flags
))
1092 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
1093 * do not reset adapter, jump to initialize_adapter */
1094 if (test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
)) {
1095 status
= QLA_SUCCESS
;
1096 goto recover_ha_init_adapter
;
1099 /* For the ISP-82xx adapter, issue a stop_firmware if invoked
1100 * from eh_host_reset or ioctl module */
1101 if (is_qla8022(ha
) && !reset_chip
&&
1102 test_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
)) {
1104 DEBUG2(ql4_printk(KERN_INFO
, ha
,
1105 "scsi%ld: %s - Performing stop_firmware...\n",
1106 ha
->host_no
, __func__
));
1107 status
= ha
->isp_ops
->reset_firmware(ha
);
1108 if (status
== QLA_SUCCESS
) {
1109 if (!test_bit(AF_FW_RECOVERY
, &ha
->flags
))
1110 qla4xxx_cmd_wait(ha
);
1111 ha
->isp_ops
->disable_intrs(ha
);
1112 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
1113 qla4xxx_abort_active_cmds(ha
, DID_RESET
<< 16);
1115 /* If the stop_firmware fails then
1116 * reset the entire chip */
1118 clear_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
);
1119 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
1123 /* Issue full chip reset if recovering from a catastrophic error,
1124 * or if stop_firmware fails for ISP-82xx.
1125 * This is the default case for ISP-4xxx */
1126 if (!is_qla8022(ha
) || reset_chip
) {
1127 if (!test_bit(AF_FW_RECOVERY
, &ha
->flags
))
1128 qla4xxx_cmd_wait(ha
);
1129 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
1130 qla4xxx_abort_active_cmds(ha
, DID_RESET
<< 16);
1131 DEBUG2(ql4_printk(KERN_INFO
, ha
,
1132 "scsi%ld: %s - Performing chip reset..\n",
1133 ha
->host_no
, __func__
));
1134 status
= ha
->isp_ops
->reset_chip(ha
);
1137 /* Flush any pending ddb changed AENs */
1138 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
1140 recover_ha_init_adapter
:
1141 /* Upon successful firmware/chip reset, re-initialize the adapter */
1142 if (status
== QLA_SUCCESS
) {
1143 /* For ISP-4xxx, force function 1 to always initialize
1144 * before function 3 to prevent both funcions from
1145 * stepping on top of the other */
1146 if (!is_qla8022(ha
) && (ha
->mac_index
== 3))
1149 /* NOTE: AF_ONLINE flag set upon successful completion of
1150 * qla4xxx_initialize_adapter */
1151 status
= qla4xxx_initialize_adapter(ha
, PRESERVE_DDB_LIST
);
1154 /* Retry failed adapter initialization, if necessary
1155 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
1156 * case to prevent ping-pong resets between functions */
1157 if (!test_bit(AF_ONLINE
, &ha
->flags
) &&
1158 !test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
)) {
1159 /* Adapter initialization failed, see if we can retry
1161 * Since we don't want to block the DPC for too long
1162 * with multiple resets in the same thread,
1163 * utilize DPC to retry */
1164 if (!test_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
)) {
1165 ha
->retry_reset_ha_cnt
= MAX_RESET_HA_RETRIES
;
1166 DEBUG2(printk("scsi%ld: recover adapter - retrying "
1167 "(%d) more times\n", ha
->host_no
,
1168 ha
->retry_reset_ha_cnt
));
1169 set_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
);
1172 if (ha
->retry_reset_ha_cnt
> 0) {
1173 /* Schedule another Reset HA--DPC will retry */
1174 ha
->retry_reset_ha_cnt
--;
1175 DEBUG2(printk("scsi%ld: recover adapter - "
1176 "retry remaining %d\n",
1178 ha
->retry_reset_ha_cnt
));
1182 if (ha
->retry_reset_ha_cnt
== 0) {
1183 /* Recover adapter retries have been exhausted.
1185 DEBUG2(printk("scsi%ld: recover adapter "
1186 "failed - board disabled\n",
1188 qla4xxx_dead_adapter_cleanup(ha
);
1189 clear_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
);
1190 clear_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
1191 clear_bit(DPC_RESET_HA_FW_CONTEXT
,
1197 clear_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
1198 clear_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
);
1199 clear_bit(DPC_RETRY_RESET_HA
, &ha
->dpc_flags
);
1202 ha
->adapter_error_count
++;
1204 if (test_bit(AF_ONLINE
, &ha
->flags
))
1205 ha
->isp_ops
->enable_intrs(ha
);
1207 scsi_unblock_requests(ha
->host
);
1209 clear_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
);
1210 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha
->host_no
,
1211 status
== QLA_ERROR
? "FAILED" : "SUCCEDED"));
1216 void qla4xxx_wake_dpc(struct scsi_qla_host
*ha
)
1218 if (ha
->dpc_thread
&&
1219 !test_bit(AF_DPC_SCHEDULED
, &ha
->flags
)) {
1220 set_bit(AF_DPC_SCHEDULED
, &ha
->flags
);
1221 queue_work(ha
->dpc_thread
, &ha
->dpc_work
);
1226 * qla4xxx_do_dpc - dpc routine
1227 * @data: in our case pointer to adapter structure
1229 * This routine is a task that is schedule by the interrupt handler
1230 * to perform the background processing for interrupts. We put it
1231 * on a task queue that is consumed whenever the scheduler runs; that's
1232 * so you can do anything (i.e. put the process to sleep etc). In fact,
1233 * the mid-level tries to sleep when it reaches the driver threshold
1234 * "host->can_queue". This can cause a panic if we were in our interrupt code.
1236 static void qla4xxx_do_dpc(struct work_struct
*work
)
1238 struct scsi_qla_host
*ha
=
1239 container_of(work
, struct scsi_qla_host
, dpc_work
);
1240 struct ddb_entry
*ddb_entry
, *dtemp
;
1241 int status
= QLA_ERROR
;
1243 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
1244 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
1245 ha
->host_no
, __func__
, ha
->flags
, ha
->dpc_flags
))
1247 /* Initialization not yet finished. Don't do anything yet. */
1248 if (!test_bit(AF_INIT_DONE
, &ha
->flags
))
1251 if (test_bit(AF_EEH_BUSY
, &ha
->flags
)) {
1252 DEBUG2(printk(KERN_INFO
"scsi%ld: %s: flags = %lx\n",
1253 ha
->host_no
, __func__
, ha
->flags
));
1257 /* HBA is in the process of being permanently disabled.
1258 * Don't process anything */
1259 if (test_bit(AF_HBA_GOING_AWAY
, &ha
->flags
))
1262 if (is_qla8022(ha
)) {
1263 if (test_bit(DPC_HA_UNRECOVERABLE
, &ha
->dpc_flags
)) {
1264 qla4_8xxx_idc_lock(ha
);
1265 qla4_8xxx_wr_32(ha
, QLA82XX_CRB_DEV_STATE
,
1266 QLA82XX_DEV_FAILED
);
1267 qla4_8xxx_idc_unlock(ha
);
1268 ql4_printk(KERN_INFO
, ha
, "HW State: FAILED\n");
1269 qla4_8xxx_device_state_handler(ha
);
1271 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT
, &ha
->dpc_flags
)) {
1272 qla4_8xxx_need_qsnt_handler(ha
);
1276 if (!test_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
) &&
1277 (test_bit(DPC_RESET_HA
, &ha
->dpc_flags
) ||
1278 test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
) ||
1279 test_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
))) {
1280 if (ql4xdontresethba
) {
1281 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
1282 ha
->host_no
, __func__
));
1283 clear_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
1284 clear_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
);
1285 clear_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
);
1286 goto dpc_post_reset_ha
;
1288 if (test_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
) ||
1289 test_bit(DPC_RESET_HA
, &ha
->dpc_flags
))
1290 qla4xxx_recover_adapter(ha
);
1292 if (test_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
)) {
1293 uint8_t wait_time
= RESET_INTR_TOV
;
1295 while ((readw(&ha
->reg
->ctrl_status
) &
1296 (CSR_SOFT_RESET
| CSR_FORCE_SOFT_RESET
)) != 0) {
1297 if (--wait_time
== 0)
1302 DEBUG2(printk("scsi%ld: %s: SR|FSR "
1303 "bit not cleared-- resetting\n",
1304 ha
->host_no
, __func__
));
1305 qla4xxx_abort_active_cmds(ha
, DID_RESET
<< 16);
1306 if (ql4xxx_lock_drvr_wait(ha
) == QLA_SUCCESS
) {
1307 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
1308 status
= qla4xxx_recover_adapter(ha
);
1310 clear_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
);
1311 if (status
== QLA_SUCCESS
)
1312 ha
->isp_ops
->enable_intrs(ha
);
1317 /* ---- process AEN? --- */
1318 if (test_and_clear_bit(DPC_AEN
, &ha
->dpc_flags
))
1319 qla4xxx_process_aen(ha
, PROCESS_ALL_AENS
);
1321 /* ---- Get DHCP IP Address? --- */
1322 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR
, &ha
->dpc_flags
))
1323 qla4xxx_get_dhcp_ip_address(ha
);
1325 /* ---- link change? --- */
1326 if (test_and_clear_bit(DPC_LINK_CHANGED
, &ha
->dpc_flags
)) {
1327 if (!test_bit(AF_LINK_UP
, &ha
->flags
)) {
1328 /* ---- link down? --- */
1329 list_for_each_entry_safe(ddb_entry
, dtemp
,
1330 &ha
->ddb_list
, list
) {
1331 if (atomic_read(&ddb_entry
->state
) ==
1333 qla4xxx_mark_device_missing(ha
,
1337 /* ---- link up? --- *
1338 * F/W will auto login to all devices ONLY ONCE after
1339 * link up during driver initialization and runtime
1340 * fatal error recovery. Therefore, the driver must
1341 * manually relogin to devices when recovering from
1342 * connection failures, logouts, expired KATO, etc. */
1344 list_for_each_entry_safe(ddb_entry
, dtemp
,
1345 &ha
->ddb_list
, list
) {
1346 if ((atomic_read(&ddb_entry
->state
) ==
1347 DDB_STATE_MISSING
) ||
1348 (atomic_read(&ddb_entry
->state
) ==
1350 if (ddb_entry
->fw_ddb_device_state
==
1351 DDB_DS_SESSION_ACTIVE
) {
1352 atomic_set(&ddb_entry
->state
,
1354 ql4_printk(KERN_INFO
, ha
,
1355 "scsi%ld: %s: ddb[%d]"
1357 ha
->host_no
, __func__
,
1358 ddb_entry
->fw_ddb_index
);
1360 iscsi_unblock_session(
1363 qla4xxx_relogin_device(
1371 /* ---- relogin device? --- */
1372 if (adapter_up(ha
) &&
1373 test_and_clear_bit(DPC_RELOGIN_DEVICE
, &ha
->dpc_flags
)) {
1374 list_for_each_entry_safe(ddb_entry
, dtemp
,
1375 &ha
->ddb_list
, list
) {
1376 if (test_and_clear_bit(DF_RELOGIN
, &ddb_entry
->flags
) &&
1377 atomic_read(&ddb_entry
->state
) != DDB_STATE_ONLINE
)
1378 qla4xxx_relogin_device(ha
, ddb_entry
);
1381 * If mbx cmd times out there is no point
1382 * in continuing further.
1383 * With large no of targets this can hang
1386 if (test_bit(DPC_RESET_HA
, &ha
->dpc_flags
)) {
1387 printk(KERN_WARNING
"scsi%ld: %s: "
1388 "need to reset hba\n",
1389 ha
->host_no
, __func__
);
1396 clear_bit(AF_DPC_SCHEDULED
, &ha
->flags
);
1400 * qla4xxx_free_adapter - release the adapter
1401 * @ha: pointer to adapter structure
1403 static void qla4xxx_free_adapter(struct scsi_qla_host
*ha
)
1406 if (test_bit(AF_INTERRUPTS_ON
, &ha
->flags
)) {
1407 /* Turn-off interrupts on the card. */
1408 ha
->isp_ops
->disable_intrs(ha
);
1411 /* Remove timer thread, if present */
1412 if (ha
->timer_active
)
1413 qla4xxx_stop_timer(ha
);
1415 /* Kill the kernel thread for this host */
1417 destroy_workqueue(ha
->dpc_thread
);
1419 /* Put firmware in known state */
1420 ha
->isp_ops
->reset_firmware(ha
);
1422 if (is_qla8022(ha
)) {
1423 qla4_8xxx_idc_lock(ha
);
1424 qla4_8xxx_clear_drv_active(ha
);
1425 qla4_8xxx_idc_unlock(ha
);
1428 /* Detach interrupts */
1429 if (test_and_clear_bit(AF_IRQ_ATTACHED
, &ha
->flags
))
1430 qla4xxx_free_irqs(ha
);
1432 /* free extra memory */
1433 qla4xxx_mem_free(ha
);
1436 int qla4_8xxx_iospace_config(struct scsi_qla_host
*ha
)
1439 uint8_t revision_id
;
1440 unsigned long mem_base
, mem_len
, db_base
, db_len
;
1441 struct pci_dev
*pdev
= ha
->pdev
;
1443 status
= pci_request_regions(pdev
, DRIVER_NAME
);
1446 "scsi(%ld) Failed to reserve PIO regions (%s) "
1447 "status=%d\n", ha
->host_no
, pci_name(pdev
), status
);
1448 goto iospace_error_exit
;
1451 pci_read_config_byte(pdev
, PCI_REVISION_ID
, &revision_id
);
1452 DEBUG2(printk(KERN_INFO
"%s: revision-id=%d\n",
1453 __func__
, revision_id
));
1454 ha
->revision_id
= revision_id
;
1456 /* remap phys address */
1457 mem_base
= pci_resource_start(pdev
, 0); /* 0 is for BAR 0 */
1458 mem_len
= pci_resource_len(pdev
, 0);
1459 DEBUG2(printk(KERN_INFO
"%s: ioremap from %lx a size of %lx\n",
1460 __func__
, mem_base
, mem_len
));
1462 /* mapping of pcibase pointer */
1463 ha
->nx_pcibase
= (unsigned long)ioremap(mem_base
, mem_len
);
1464 if (!ha
->nx_pcibase
) {
1466 "cannot remap MMIO (%s), aborting\n", pci_name(pdev
));
1467 pci_release_regions(ha
->pdev
);
1468 goto iospace_error_exit
;
1471 /* Mapping of IO base pointer, door bell read and write pointer */
1473 /* mapping of IO base pointer */
1475 (struct device_reg_82xx __iomem
*)((uint8_t *)ha
->nx_pcibase
+
1476 0xbc000 + (ha
->pdev
->devfn
<< 11));
1478 db_base
= pci_resource_start(pdev
, 4); /* doorbell is on bar 4 */
1479 db_len
= pci_resource_len(pdev
, 4);
1481 ha
->nx_db_wr_ptr
= (ha
->pdev
->devfn
== 4 ? QLA82XX_CAM_RAM_DB1
:
1482 QLA82XX_CAM_RAM_DB2
);
1490 * qla4xxx_iospace_config - maps registers
1491 * @ha: pointer to adapter structure
1493 * This routines maps HBA's registers from the pci address space
1494 * into the kernel virtual address space for memory mapped i/o.
1496 int qla4xxx_iospace_config(struct scsi_qla_host
*ha
)
1498 unsigned long pio
, pio_len
, pio_flags
;
1499 unsigned long mmio
, mmio_len
, mmio_flags
;
1501 pio
= pci_resource_start(ha
->pdev
, 0);
1502 pio_len
= pci_resource_len(ha
->pdev
, 0);
1503 pio_flags
= pci_resource_flags(ha
->pdev
, 0);
1504 if (pio_flags
& IORESOURCE_IO
) {
1505 if (pio_len
< MIN_IOBASE_LEN
) {
1506 ql4_printk(KERN_WARNING
, ha
,
1507 "Invalid PCI I/O region size\n");
1511 ql4_printk(KERN_WARNING
, ha
, "region #0 not a PIO resource\n");
1515 /* Use MMIO operations for all accesses. */
1516 mmio
= pci_resource_start(ha
->pdev
, 1);
1517 mmio_len
= pci_resource_len(ha
->pdev
, 1);
1518 mmio_flags
= pci_resource_flags(ha
->pdev
, 1);
1520 if (!(mmio_flags
& IORESOURCE_MEM
)) {
1521 ql4_printk(KERN_ERR
, ha
,
1522 "region #0 not an MMIO resource, aborting\n");
1524 goto iospace_error_exit
;
1527 if (mmio_len
< MIN_IOBASE_LEN
) {
1528 ql4_printk(KERN_ERR
, ha
,
1529 "Invalid PCI mem region size, aborting\n");
1530 goto iospace_error_exit
;
1533 if (pci_request_regions(ha
->pdev
, DRIVER_NAME
)) {
1534 ql4_printk(KERN_WARNING
, ha
,
1535 "Failed to reserve PIO/MMIO regions\n");
1537 goto iospace_error_exit
;
1540 ha
->pio_address
= pio
;
1541 ha
->pio_length
= pio_len
;
1542 ha
->reg
= ioremap(mmio
, MIN_IOBASE_LEN
);
1544 ql4_printk(KERN_ERR
, ha
,
1545 "cannot remap MMIO, aborting\n");
1547 goto iospace_error_exit
;
1556 static struct isp_operations qla4xxx_isp_ops
= {
1557 .iospace_config
= qla4xxx_iospace_config
,
1558 .pci_config
= qla4xxx_pci_config
,
1559 .disable_intrs
= qla4xxx_disable_intrs
,
1560 .enable_intrs
= qla4xxx_enable_intrs
,
1561 .start_firmware
= qla4xxx_start_firmware
,
1562 .intr_handler
= qla4xxx_intr_handler
,
1563 .interrupt_service_routine
= qla4xxx_interrupt_service_routine
,
1564 .reset_chip
= qla4xxx_soft_reset
,
1565 .reset_firmware
= qla4xxx_hw_reset
,
1566 .queue_iocb
= qla4xxx_queue_iocb
,
1567 .complete_iocb
= qla4xxx_complete_iocb
,
1568 .rd_shdw_req_q_out
= qla4xxx_rd_shdw_req_q_out
,
1569 .rd_shdw_rsp_q_in
= qla4xxx_rd_shdw_rsp_q_in
,
1570 .get_sys_info
= qla4xxx_get_sys_info
,
1573 static struct isp_operations qla4_8xxx_isp_ops
= {
1574 .iospace_config
= qla4_8xxx_iospace_config
,
1575 .pci_config
= qla4_8xxx_pci_config
,
1576 .disable_intrs
= qla4_8xxx_disable_intrs
,
1577 .enable_intrs
= qla4_8xxx_enable_intrs
,
1578 .start_firmware
= qla4_8xxx_load_risc
,
1579 .intr_handler
= qla4_8xxx_intr_handler
,
1580 .interrupt_service_routine
= qla4_8xxx_interrupt_service_routine
,
1581 .reset_chip
= qla4_8xxx_isp_reset
,
1582 .reset_firmware
= qla4_8xxx_stop_firmware
,
1583 .queue_iocb
= qla4_8xxx_queue_iocb
,
1584 .complete_iocb
= qla4_8xxx_complete_iocb
,
1585 .rd_shdw_req_q_out
= qla4_8xxx_rd_shdw_req_q_out
,
1586 .rd_shdw_rsp_q_in
= qla4_8xxx_rd_shdw_rsp_q_in
,
1587 .get_sys_info
= qla4_8xxx_get_sys_info
,
1590 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host
*ha
)
1592 return (uint16_t)le32_to_cpu(ha
->shadow_regs
->req_q_out
);
1595 uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host
*ha
)
1597 return (uint16_t)le32_to_cpu(readl(&ha
->qla4_8xxx_reg
->req_q_out
));
1600 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host
*ha
)
1602 return (uint16_t)le32_to_cpu(ha
->shadow_regs
->rsp_q_in
);
1605 uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host
*ha
)
1607 return (uint16_t)le32_to_cpu(readl(&ha
->qla4_8xxx_reg
->rsp_q_in
));
1611 * qla4xxx_probe_adapter - callback function to probe HBA
1612 * @pdev: pointer to pci_dev structure
1613 * @pci_device_id: pointer to pci_device entry
1615 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
1616 * It returns zero if successful. It also initializes all data necessary for
1619 static int __devinit
qla4xxx_probe_adapter(struct pci_dev
*pdev
,
1620 const struct pci_device_id
*ent
)
1622 int ret
= -ENODEV
, status
;
1623 struct Scsi_Host
*host
;
1624 struct scsi_qla_host
*ha
;
1625 uint8_t init_retry_count
= 0;
1627 struct qla4_8xxx_legacy_intr_set
*nx_legacy_intr
;
1629 if (pci_enable_device(pdev
))
1632 host
= scsi_host_alloc(&qla4xxx_driver_template
, sizeof(*ha
));
1635 "qla4xxx: Couldn't allocate host from scsi layer!\n");
1636 goto probe_disable_device
;
1639 /* Clear our data area */
1640 ha
= (struct scsi_qla_host
*) host
->hostdata
;
1641 memset(ha
, 0, sizeof(*ha
));
1643 /* Save the information from PCI BIOS. */
1646 ha
->host_no
= host
->host_no
;
1648 pci_enable_pcie_error_reporting(pdev
);
1650 /* Setup Runtime configurable options */
1651 if (is_qla8022(ha
)) {
1652 ha
->isp_ops
= &qla4_8xxx_isp_ops
;
1653 rwlock_init(&ha
->hw_lock
);
1654 ha
->qdr_sn_window
= -1;
1655 ha
->ddr_mn_window
= -1;
1656 ha
->curr_window
= 255;
1657 ha
->func_num
= PCI_FUNC(ha
->pdev
->devfn
);
1658 nx_legacy_intr
= &legacy_intr
[ha
->func_num
];
1659 ha
->nx_legacy_intr
.int_vec_bit
= nx_legacy_intr
->int_vec_bit
;
1660 ha
->nx_legacy_intr
.tgt_status_reg
=
1661 nx_legacy_intr
->tgt_status_reg
;
1662 ha
->nx_legacy_intr
.tgt_mask_reg
= nx_legacy_intr
->tgt_mask_reg
;
1663 ha
->nx_legacy_intr
.pci_int_reg
= nx_legacy_intr
->pci_int_reg
;
1665 ha
->isp_ops
= &qla4xxx_isp_ops
;
1668 /* Set EEH reset type to fundamental if required by hba */
1670 pdev
->needs_freset
= 1;
1672 /* Configure PCI I/O space. */
1673 ret
= ha
->isp_ops
->iospace_config(ha
);
1675 goto probe_failed_ioconfig
;
1677 ql4_printk(KERN_INFO
, ha
, "Found an ISP%04x, irq %d, iobase 0x%p\n",
1678 pdev
->device
, pdev
->irq
, ha
->reg
);
1680 qla4xxx_config_dma_addressing(ha
);
1682 /* Initialize lists and spinlocks. */
1683 INIT_LIST_HEAD(&ha
->ddb_list
);
1684 INIT_LIST_HEAD(&ha
->free_srb_q
);
1686 mutex_init(&ha
->mbox_sem
);
1687 init_completion(&ha
->mbx_intr_comp
);
1689 spin_lock_init(&ha
->hardware_lock
);
1691 /* Allocate dma buffers */
1692 if (qla4xxx_mem_alloc(ha
)) {
1693 ql4_printk(KERN_WARNING
, ha
,
1694 "[ERROR] Failed to allocate memory for adapter\n");
1701 (void) qla4_8xxx_get_flash_info(ha
);
1704 * Initialize the Host adapter request/response queues and
1706 * NOTE: interrupts enabled upon successful completion
1708 status
= qla4xxx_initialize_adapter(ha
, REBUILD_DDB_LIST
);
1709 while ((!test_bit(AF_ONLINE
, &ha
->flags
)) &&
1710 init_retry_count
++ < MAX_INIT_RETRIES
) {
1711 DEBUG2(printk("scsi: %s: retrying adapter initialization "
1712 "(%d)\n", __func__
, init_retry_count
));
1714 if (ha
->isp_ops
->reset_chip(ha
) == QLA_ERROR
)
1717 status
= qla4xxx_initialize_adapter(ha
, REBUILD_DDB_LIST
);
1720 if (!test_bit(AF_ONLINE
, &ha
->flags
)) {
1721 ql4_printk(KERN_WARNING
, ha
, "Failed to initialize adapter\n");
1727 host
->cmd_per_lun
= 3;
1728 host
->max_channel
= 0;
1729 host
->max_lun
= MAX_LUNS
- 1;
1730 host
->max_id
= MAX_TARGETS
;
1731 host
->max_cmd_len
= IOCB_MAX_CDB_LEN
;
1732 host
->can_queue
= MAX_SRBS
;
1733 host
->transportt
= qla4xxx_scsi_transport
;
1735 ret
= scsi_init_shared_tag_map(host
, MAX_SRBS
);
1737 ql4_printk(KERN_WARNING
, ha
,
1738 "scsi_init_shared_tag_map failed\n");
1742 /* Startup the kernel thread for this host adapter. */
1743 DEBUG2(printk("scsi: %s: Starting kernel thread for "
1744 "qla4xxx_dpc\n", __func__
));
1745 sprintf(buf
, "qla4xxx_%lu_dpc", ha
->host_no
);
1746 ha
->dpc_thread
= create_singlethread_workqueue(buf
);
1747 if (!ha
->dpc_thread
) {
1748 ql4_printk(KERN_WARNING
, ha
, "Unable to start DPC thread!\n");
1752 INIT_WORK(&ha
->dpc_work
, qla4xxx_do_dpc
);
1754 /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
1755 * (which is called indirectly by qla4xxx_initialize_adapter),
1756 * so that irqs will be registered after crbinit but before
1759 if (!is_qla8022(ha
)) {
1760 ret
= qla4xxx_request_irqs(ha
);
1762 ql4_printk(KERN_WARNING
, ha
, "Failed to reserve "
1763 "interrupt %d already in use.\n", pdev
->irq
);
1768 pci_save_state(ha
->pdev
);
1769 ha
->isp_ops
->enable_intrs(ha
);
1771 /* Start timer thread. */
1772 qla4xxx_start_timer(ha
, qla4xxx_timer
, 1);
1774 set_bit(AF_INIT_DONE
, &ha
->flags
);
1776 pci_set_drvdata(pdev
, ha
);
1778 ret
= scsi_add_host(host
, &pdev
->dev
);
1783 " QLogic iSCSI HBA Driver version: %s\n"
1784 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
1785 qla4xxx_version_str
, ha
->pdev
->device
, pci_name(ha
->pdev
),
1786 ha
->host_no
, ha
->firmware_version
[0], ha
->firmware_version
[1],
1787 ha
->patch_number
, ha
->build_number
);
1788 scsi_scan_host(host
);
1792 qla4xxx_free_adapter(ha
);
1794 probe_failed_ioconfig
:
1795 pci_disable_pcie_error_reporting(pdev
);
1796 scsi_host_put(ha
->host
);
1798 probe_disable_device
:
1799 pci_disable_device(pdev
);
1805 * qla4xxx_remove_adapter - calback function to remove adapter.
1806 * @pci_dev: PCI device pointer
1808 static void __devexit
qla4xxx_remove_adapter(struct pci_dev
*pdev
)
1810 struct scsi_qla_host
*ha
;
1812 ha
= pci_get_drvdata(pdev
);
1814 set_bit(AF_HBA_GOING_AWAY
, &ha
->flags
);
1816 /* remove devs from iscsi_sessions to scsi_devices */
1817 qla4xxx_free_ddb_list(ha
);
1819 scsi_remove_host(ha
->host
);
1821 qla4xxx_free_adapter(ha
);
1823 scsi_host_put(ha
->host
);
1825 pci_disable_pcie_error_reporting(pdev
);
1826 pci_disable_device(pdev
);
1827 pci_set_drvdata(pdev
, NULL
);
1831 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
1834 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1835 * supported addressing method.
1837 static void qla4xxx_config_dma_addressing(struct scsi_qla_host
*ha
)
1841 /* Update our PCI device dma_mask for full 64 bit mask */
1842 if (pci_set_dma_mask(ha
->pdev
, DMA_BIT_MASK(64)) == 0) {
1843 if (pci_set_consistent_dma_mask(ha
->pdev
, DMA_BIT_MASK(64))) {
1844 dev_dbg(&ha
->pdev
->dev
,
1845 "Failed to set 64 bit PCI consistent mask; "
1847 retval
= pci_set_consistent_dma_mask(ha
->pdev
,
1851 retval
= pci_set_dma_mask(ha
->pdev
, DMA_BIT_MASK(32));
1854 static int qla4xxx_slave_alloc(struct scsi_device
*sdev
)
1856 struct iscsi_cls_session
*sess
= starget_to_session(sdev
->sdev_target
);
1857 struct ddb_entry
*ddb
= sess
->dd_data
;
1859 sdev
->hostdata
= ddb
;
1860 sdev
->tagged_supported
= 1;
1861 scsi_activate_tcq(sdev
, QL4_DEF_QDEPTH
);
1865 static int qla4xxx_slave_configure(struct scsi_device
*sdev
)
1867 sdev
->tagged_supported
= 1;
1871 static void qla4xxx_slave_destroy(struct scsi_device
*sdev
)
1873 scsi_deactivate_tcq(sdev
, 1);
1877 * qla4xxx_del_from_active_array - returns an active srb
1878 * @ha: Pointer to host adapter structure.
1879 * @index: index into the active_array
1881 * This routine removes and returns the srb at the specified index
1883 struct srb
*qla4xxx_del_from_active_array(struct scsi_qla_host
*ha
,
1886 struct srb
*srb
= NULL
;
1887 struct scsi_cmnd
*cmd
= NULL
;
1889 cmd
= scsi_host_find_tag(ha
->host
, index
);
1893 srb
= (struct srb
*)CMD_SP(cmd
);
1897 /* update counters */
1898 if (srb
->flags
& SRB_DMA_VALID
) {
1899 ha
->req_q_count
+= srb
->iocb_cnt
;
1900 ha
->iocb_cnt
-= srb
->iocb_cnt
;
1902 srb
->cmd
->host_scribble
=
1903 (unsigned char *)(unsigned long) MAX_SRBS
;
1909 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
1910 * @ha: Pointer to host adapter structure.
1911 * @cmd: Scsi Command to wait on.
1913 * This routine waits for the command to be returned by the Firmware
1914 * for some max time.
1916 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host
*ha
,
1917 struct scsi_cmnd
*cmd
)
1921 uint32_t max_wait_time
= EH_WAIT_CMD_TOV
;
1924 /* Dont wait on command if PCI error is being handled
1927 if (unlikely(pci_channel_offline(ha
->pdev
)) ||
1928 (test_bit(AF_EEH_BUSY
, &ha
->flags
))) {
1929 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: Return from %s\n",
1930 ha
->host_no
, __func__
);
1935 /* Checking to see if its returned to OS */
1936 rp
= (struct srb
*) CMD_SP(cmd
);
1943 } while (max_wait_time
--);
1949 * qla4xxx_wait_for_hba_online - waits for HBA to come online
1950 * @ha: Pointer to host adapter structure
1952 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host
*ha
)
1954 unsigned long wait_online
;
1956 wait_online
= jiffies
+ (HBA_ONLINE_TOV
* HZ
);
1957 while (time_before(jiffies
, wait_online
)) {
1969 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
1970 * @ha: pointer to HBA
1974 * This function waits for all outstanding commands to a lun to complete. It
1975 * returns 0 if all pending commands are returned and 1 otherwise.
1977 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host
*ha
,
1978 struct scsi_target
*stgt
,
1979 struct scsi_device
*sdev
)
1983 struct scsi_cmnd
*cmd
;
1986 * Waiting for all commands for the designated target or dev
1987 * in the active array
1989 for (cnt
= 0; cnt
< ha
->host
->can_queue
; cnt
++) {
1990 cmd
= scsi_host_find_tag(ha
->host
, cnt
);
1991 if (cmd
&& stgt
== scsi_target(cmd
->device
) &&
1992 (!sdev
|| sdev
== cmd
->device
)) {
1993 if (!qla4xxx_eh_wait_on_command(ha
, cmd
)) {
2003 * qla4xxx_eh_abort - callback for abort task.
2004 * @cmd: Pointer to Linux's SCSI command structure
2006 * This routine is called by the Linux OS to abort the specified
2009 static int qla4xxx_eh_abort(struct scsi_cmnd
*cmd
)
2011 struct scsi_qla_host
*ha
= to_qla_host(cmd
->device
->host
);
2012 unsigned int id
= cmd
->device
->id
;
2013 unsigned int lun
= cmd
->device
->lun
;
2014 unsigned long serial
= cmd
->serial_number
;
2015 unsigned long flags
;
2016 struct srb
*srb
= NULL
;
2020 ql4_printk(KERN_INFO
, ha
,
2021 "scsi%ld:%d:%d: Abort command issued cmd=%p, pid=%ld\n",
2022 ha
->host_no
, id
, lun
, cmd
, serial
);
2024 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
2025 srb
= (struct srb
*) CMD_SP(cmd
);
2027 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
2030 kref_get(&srb
->srb_ref
);
2031 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
2033 if (qla4xxx_abort_task(ha
, srb
) != QLA_SUCCESS
) {
2034 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
2035 ha
->host_no
, id
, lun
));
2038 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
2039 ha
->host_no
, id
, lun
));
2043 kref_put(&srb
->srb_ref
, qla4xxx_srb_compl
);
2045 /* Wait for command to complete */
2047 if (!qla4xxx_eh_wait_on_command(ha
, cmd
)) {
2048 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
2049 ha
->host_no
, id
, lun
));
2054 ql4_printk(KERN_INFO
, ha
,
2055 "scsi%ld:%d:%d: Abort command - %s\n",
2056 ha
->host_no
, id
, lun
, (ret
== SUCCESS
) ? "succeded" : "failed");
2062 * qla4xxx_eh_device_reset - callback for target reset.
2063 * @cmd: Pointer to Linux's SCSI command structure
2065 * This routine is called by the Linux OS to reset all luns on the
2068 static int qla4xxx_eh_device_reset(struct scsi_cmnd
*cmd
)
2070 struct scsi_qla_host
*ha
= to_qla_host(cmd
->device
->host
);
2071 struct ddb_entry
*ddb_entry
= cmd
->device
->hostdata
;
2072 int ret
= FAILED
, stat
;
2077 ret
= iscsi_block_scsi_eh(cmd
);
2082 ql4_printk(KERN_INFO
, ha
,
2083 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha
->host_no
,
2084 cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
);
2086 DEBUG2(printk(KERN_INFO
2087 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
2088 "dpc_flags=%lx, status=%x allowed=%d\n", ha
->host_no
,
2089 cmd
, jiffies
, cmd
->request
->timeout
/ HZ
,
2090 ha
->dpc_flags
, cmd
->result
, cmd
->allowed
));
2092 /* FIXME: wait for hba to go online */
2093 stat
= qla4xxx_reset_lun(ha
, ddb_entry
, cmd
->device
->lun
);
2094 if (stat
!= QLA_SUCCESS
) {
2095 ql4_printk(KERN_INFO
, ha
, "DEVICE RESET FAILED. %d\n", stat
);
2096 goto eh_dev_reset_done
;
2099 if (qla4xxx_eh_wait_for_commands(ha
, scsi_target(cmd
->device
),
2101 ql4_printk(KERN_INFO
, ha
,
2102 "DEVICE RESET FAILED - waiting for "
2104 goto eh_dev_reset_done
;
2108 if (qla4xxx_send_marker_iocb(ha
, ddb_entry
, cmd
->device
->lun
,
2109 MM_LUN_RESET
) != QLA_SUCCESS
)
2110 goto eh_dev_reset_done
;
2112 ql4_printk(KERN_INFO
, ha
,
2113 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
2114 ha
->host_no
, cmd
->device
->channel
, cmd
->device
->id
,
2125 * qla4xxx_eh_target_reset - callback for target reset.
2126 * @cmd: Pointer to Linux's SCSI command structure
2128 * This routine is called by the Linux OS to reset the target.
2130 static int qla4xxx_eh_target_reset(struct scsi_cmnd
*cmd
)
2132 struct scsi_qla_host
*ha
= to_qla_host(cmd
->device
->host
);
2133 struct ddb_entry
*ddb_entry
= cmd
->device
->hostdata
;
2139 ret
= iscsi_block_scsi_eh(cmd
);
2143 starget_printk(KERN_INFO
, scsi_target(cmd
->device
),
2144 "WARM TARGET RESET ISSUED.\n");
2146 DEBUG2(printk(KERN_INFO
2147 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
2148 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
2149 ha
->host_no
, cmd
, jiffies
, cmd
->request
->timeout
/ HZ
,
2150 ha
->dpc_flags
, cmd
->result
, cmd
->allowed
));
2152 stat
= qla4xxx_reset_target(ha
, ddb_entry
);
2153 if (stat
!= QLA_SUCCESS
) {
2154 starget_printk(KERN_INFO
, scsi_target(cmd
->device
),
2155 "WARM TARGET RESET FAILED.\n");
2159 if (qla4xxx_eh_wait_for_commands(ha
, scsi_target(cmd
->device
),
2161 starget_printk(KERN_INFO
, scsi_target(cmd
->device
),
2162 "WARM TARGET DEVICE RESET FAILED - "
2163 "waiting for commands.\n");
2168 if (qla4xxx_send_marker_iocb(ha
, ddb_entry
, cmd
->device
->lun
,
2169 MM_TGT_WARM_RESET
) != QLA_SUCCESS
) {
2170 starget_printk(KERN_INFO
, scsi_target(cmd
->device
),
2171 "WARM TARGET DEVICE RESET FAILED - "
2172 "marker iocb failed.\n");
2176 starget_printk(KERN_INFO
, scsi_target(cmd
->device
),
2177 "WARM TARGET RESET SUCCEEDED.\n");
2182 * qla4xxx_eh_host_reset - kernel callback
2183 * @cmd: Pointer to Linux's SCSI command structure
2185 * This routine is invoked by the Linux kernel to perform fatal error
2186 * recovery on the specified adapter.
2188 static int qla4xxx_eh_host_reset(struct scsi_cmnd
*cmd
)
2190 int return_status
= FAILED
;
2191 struct scsi_qla_host
*ha
;
2193 ha
= (struct scsi_qla_host
*) cmd
->device
->host
->hostdata
;
2195 if (ql4xdontresethba
) {
2196 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
2197 ha
->host_no
, __func__
));
2201 ql4_printk(KERN_INFO
, ha
,
2202 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha
->host_no
,
2203 cmd
->device
->channel
, cmd
->device
->id
, cmd
->device
->lun
);
2205 if (qla4xxx_wait_for_hba_online(ha
) != QLA_SUCCESS
) {
2206 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
2207 "DEAD.\n", ha
->host_no
, cmd
->device
->channel
,
2213 if (!test_bit(DPC_RESET_HA
, &ha
->dpc_flags
)) {
2215 set_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
);
2217 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
2220 if (qla4xxx_recover_adapter(ha
) == QLA_SUCCESS
)
2221 return_status
= SUCCESS
;
2223 ql4_printk(KERN_INFO
, ha
, "HOST RESET %s.\n",
2224 return_status
== FAILED
? "FAILED" : "SUCCEDED");
2226 return return_status
;
2229 /* PCI AER driver recovers from all correctable errors w/o
2230 * driver intervention. For uncorrectable errors PCI AER
2231 * driver calls the following device driver's callbacks
2233 * - Fatal Errors - link_reset
2234 * - Non-Fatal Errors - driver's pci_error_detected() which
2235 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
2237 * PCI AER driver calls
2238 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
2239 * returns RECOVERED or NEED_RESET if fw_hung
2240 * NEED_RESET - driver's slot_reset()
2241 * DISCONNECT - device is dead & cannot recover
2242 * RECOVERED - driver's pci_resume()
2244 static pci_ers_result_t
2245 qla4xxx_pci_error_detected(struct pci_dev
*pdev
, pci_channel_state_t state
)
2247 struct scsi_qla_host
*ha
= pci_get_drvdata(pdev
);
2249 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: %s: error detected:state %x\n",
2250 ha
->host_no
, __func__
, state
);
2252 if (!is_aer_supported(ha
))
2253 return PCI_ERS_RESULT_NONE
;
2256 case pci_channel_io_normal
:
2257 clear_bit(AF_EEH_BUSY
, &ha
->flags
);
2258 return PCI_ERS_RESULT_CAN_RECOVER
;
2259 case pci_channel_io_frozen
:
2260 set_bit(AF_EEH_BUSY
, &ha
->flags
);
2261 qla4xxx_mailbox_premature_completion(ha
);
2262 qla4xxx_free_irqs(ha
);
2263 pci_disable_device(pdev
);
2264 /* Return back all IOs */
2265 qla4xxx_abort_active_cmds(ha
, DID_RESET
<< 16);
2266 return PCI_ERS_RESULT_NEED_RESET
;
2267 case pci_channel_io_perm_failure
:
2268 set_bit(AF_EEH_BUSY
, &ha
->flags
);
2269 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE
, &ha
->flags
);
2270 qla4xxx_abort_active_cmds(ha
, DID_NO_CONNECT
<< 16);
2271 return PCI_ERS_RESULT_DISCONNECT
;
2273 return PCI_ERS_RESULT_NEED_RESET
;
2277 * qla4xxx_pci_mmio_enabled() gets called if
2278 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
2279 * and read/write to the device still works.
2281 static pci_ers_result_t
2282 qla4xxx_pci_mmio_enabled(struct pci_dev
*pdev
)
2284 struct scsi_qla_host
*ha
= pci_get_drvdata(pdev
);
2286 if (!is_aer_supported(ha
))
2287 return PCI_ERS_RESULT_NONE
;
2289 return PCI_ERS_RESULT_RECOVERED
;
2292 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host
*ha
)
2294 uint32_t rval
= QLA_ERROR
;
2297 struct pci_dev
*other_pdev
= NULL
;
2299 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: In %s\n", ha
->host_no
, __func__
);
2301 set_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
);
2303 if (test_bit(AF_ONLINE
, &ha
->flags
)) {
2304 clear_bit(AF_ONLINE
, &ha
->flags
);
2305 qla4xxx_mark_all_devices_missing(ha
);
2306 qla4xxx_process_aen(ha
, FLUSH_DDB_CHANGED_AENS
);
2309 fn
= PCI_FUNC(ha
->pdev
->devfn
);
2312 ql4_printk(KERN_INFO
, ha
, "scsi%ld: %s: Finding PCI device at "
2313 "func %x\n", ha
->host_no
, __func__
, fn
);
2314 /* Get the pci device given the domain, bus,
2315 * slot/function number */
2317 pci_get_domain_bus_and_slot(pci_domain_nr(ha
->pdev
->bus
),
2318 ha
->pdev
->bus
->number
, PCI_DEVFN(PCI_SLOT(ha
->pdev
->devfn
),
2324 if (atomic_read(&other_pdev
->enable_cnt
)) {
2325 ql4_printk(KERN_INFO
, ha
, "scsi%ld: %s: Found PCI "
2326 "func in enabled state%x\n", ha
->host_no
,
2328 pci_dev_put(other_pdev
);
2331 pci_dev_put(other_pdev
);
2334 /* The first function on the card, the reset owner will
2335 * start & initialize the firmware. The other functions
2336 * on the card will reset the firmware context
2339 ql4_printk(KERN_INFO
, ha
, "scsi%ld: %s: devfn being reset "
2340 "0x%x is the owner\n", ha
->host_no
, __func__
,
2343 qla4_8xxx_idc_lock(ha
);
2344 qla4_8xxx_wr_32(ha
, QLA82XX_CRB_DEV_STATE
,
2347 qla4_8xxx_wr_32(ha
, QLA82XX_CRB_DRV_IDC_VERSION
,
2348 QLA82XX_IDC_VERSION
);
2350 qla4_8xxx_idc_unlock(ha
);
2351 clear_bit(AF_FW_RECOVERY
, &ha
->flags
);
2352 rval
= qla4xxx_initialize_adapter(ha
, PRESERVE_DDB_LIST
);
2353 qla4_8xxx_idc_lock(ha
);
2355 if (rval
!= QLA_SUCCESS
) {
2356 ql4_printk(KERN_INFO
, ha
, "scsi%ld: %s: HW State: "
2357 "FAILED\n", ha
->host_no
, __func__
);
2358 qla4_8xxx_clear_drv_active(ha
);
2359 qla4_8xxx_wr_32(ha
, QLA82XX_CRB_DEV_STATE
,
2360 QLA82XX_DEV_FAILED
);
2362 ql4_printk(KERN_INFO
, ha
, "scsi%ld: %s: HW State: "
2363 "READY\n", ha
->host_no
, __func__
);
2364 qla4_8xxx_wr_32(ha
, QLA82XX_CRB_DEV_STATE
,
2366 /* Clear driver state register */
2367 qla4_8xxx_wr_32(ha
, QLA82XX_CRB_DRV_STATE
, 0);
2368 qla4_8xxx_set_drv_active(ha
);
2369 ret
= qla4xxx_request_irqs(ha
);
2371 ql4_printk(KERN_WARNING
, ha
, "Failed to "
2372 "reserve interrupt %d already in use.\n",
2376 ha
->isp_ops
->enable_intrs(ha
);
2380 qla4_8xxx_idc_unlock(ha
);
2382 ql4_printk(KERN_INFO
, ha
, "scsi%ld: %s: devfn 0x%x is not "
2383 "the reset owner\n", ha
->host_no
, __func__
,
2385 if ((qla4_8xxx_rd_32(ha
, QLA82XX_CRB_DEV_STATE
) ==
2386 QLA82XX_DEV_READY
)) {
2387 clear_bit(AF_FW_RECOVERY
, &ha
->flags
);
2388 rval
= qla4xxx_initialize_adapter(ha
,
2390 if (rval
== QLA_SUCCESS
) {
2391 ret
= qla4xxx_request_irqs(ha
);
2393 ql4_printk(KERN_WARNING
, ha
, "Failed to"
2394 " reserve interrupt %d already in"
2395 " use.\n", ha
->pdev
->irq
);
2398 ha
->isp_ops
->enable_intrs(ha
);
2402 qla4_8xxx_idc_lock(ha
);
2403 qla4_8xxx_set_drv_active(ha
);
2404 qla4_8xxx_idc_unlock(ha
);
2407 clear_bit(DPC_RESET_ACTIVE
, &ha
->dpc_flags
);
2411 static pci_ers_result_t
2412 qla4xxx_pci_slot_reset(struct pci_dev
*pdev
)
2414 pci_ers_result_t ret
= PCI_ERS_RESULT_DISCONNECT
;
2415 struct scsi_qla_host
*ha
= pci_get_drvdata(pdev
);
2418 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: %s: slot_reset\n",
2419 ha
->host_no
, __func__
);
2421 if (!is_aer_supported(ha
))
2422 return PCI_ERS_RESULT_NONE
;
2424 /* Restore the saved state of PCIe device -
2425 * BAR registers, PCI Config space, PCIX, MSI,
2428 pci_restore_state(pdev
);
2430 /* pci_restore_state() clears the saved_state flag of the device
2431 * save restored state which resets saved_state flag
2433 pci_save_state(pdev
);
2435 /* Initialize device or resume if in suspended state */
2436 rc
= pci_enable_device(pdev
);
2438 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: %s: Cant re-enable "
2439 "device after reset\n", ha
->host_no
, __func__
);
2440 goto exit_slot_reset
;
2443 ha
->isp_ops
->disable_intrs(ha
);
2445 if (is_qla8022(ha
)) {
2446 if (qla4_8xxx_error_recovery(ha
) == QLA_SUCCESS
) {
2447 ret
= PCI_ERS_RESULT_RECOVERED
;
2448 goto exit_slot_reset
;
2450 goto exit_slot_reset
;
2454 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: %s: Return=%x\n"
2455 "device after reset\n", ha
->host_no
, __func__
, ret
);
2460 qla4xxx_pci_resume(struct pci_dev
*pdev
)
2462 struct scsi_qla_host
*ha
= pci_get_drvdata(pdev
);
2465 ql4_printk(KERN_WARNING
, ha
, "scsi%ld: %s: pci_resume\n",
2466 ha
->host_no
, __func__
);
2468 ret
= qla4xxx_wait_for_hba_online(ha
);
2469 if (ret
!= QLA_SUCCESS
) {
2470 ql4_printk(KERN_ERR
, ha
, "scsi%ld: %s: the device failed to "
2471 "resume I/O from slot/link_reset\n", ha
->host_no
,
2475 pci_cleanup_aer_uncorrect_error_status(pdev
);
2476 clear_bit(AF_EEH_BUSY
, &ha
->flags
);
2479 static struct pci_error_handlers qla4xxx_err_handler
= {
2480 .error_detected
= qla4xxx_pci_error_detected
,
2481 .mmio_enabled
= qla4xxx_pci_mmio_enabled
,
2482 .slot_reset
= qla4xxx_pci_slot_reset
,
2483 .resume
= qla4xxx_pci_resume
,
2486 static struct pci_device_id qla4xxx_pci_tbl
[] = {
2488 .vendor
= PCI_VENDOR_ID_QLOGIC
,
2489 .device
= PCI_DEVICE_ID_QLOGIC_ISP4010
,
2490 .subvendor
= PCI_ANY_ID
,
2491 .subdevice
= PCI_ANY_ID
,
2494 .vendor
= PCI_VENDOR_ID_QLOGIC
,
2495 .device
= PCI_DEVICE_ID_QLOGIC_ISP4022
,
2496 .subvendor
= PCI_ANY_ID
,
2497 .subdevice
= PCI_ANY_ID
,
2500 .vendor
= PCI_VENDOR_ID_QLOGIC
,
2501 .device
= PCI_DEVICE_ID_QLOGIC_ISP4032
,
2502 .subvendor
= PCI_ANY_ID
,
2503 .subdevice
= PCI_ANY_ID
,
2506 .vendor
= PCI_VENDOR_ID_QLOGIC
,
2507 .device
= PCI_DEVICE_ID_QLOGIC_ISP8022
,
2508 .subvendor
= PCI_ANY_ID
,
2509 .subdevice
= PCI_ANY_ID
,
2513 MODULE_DEVICE_TABLE(pci
, qla4xxx_pci_tbl
);
2515 static struct pci_driver qla4xxx_pci_driver
= {
2516 .name
= DRIVER_NAME
,
2517 .id_table
= qla4xxx_pci_tbl
,
2518 .probe
= qla4xxx_probe_adapter
,
2519 .remove
= qla4xxx_remove_adapter
,
2520 .err_handler
= &qla4xxx_err_handler
,
2523 static int __init
qla4xxx_module_init(void)
2527 /* Allocate cache for SRBs. */
2528 srb_cachep
= kmem_cache_create("qla4xxx_srbs", sizeof(struct srb
), 0,
2529 SLAB_HWCACHE_ALIGN
, NULL
);
2530 if (srb_cachep
== NULL
) {
2532 "%s: Unable to allocate SRB cache..."
2533 "Failing load!\n", DRIVER_NAME
);
2538 /* Derive version string. */
2539 strcpy(qla4xxx_version_str
, QLA4XXX_DRIVER_VERSION
);
2540 if (ql4xextended_error_logging
)
2541 strcat(qla4xxx_version_str
, "-debug");
2543 qla4xxx_scsi_transport
=
2544 iscsi_register_transport(&qla4xxx_iscsi_transport
);
2545 if (!qla4xxx_scsi_transport
){
2547 goto release_srb_cache
;
2550 ret
= pci_register_driver(&qla4xxx_pci_driver
);
2552 goto unregister_transport
;
2554 printk(KERN_INFO
"QLogic iSCSI HBA Driver\n");
2557 unregister_transport
:
2558 iscsi_unregister_transport(&qla4xxx_iscsi_transport
);
2560 kmem_cache_destroy(srb_cachep
);
2565 static void __exit
qla4xxx_module_exit(void)
2567 pci_unregister_driver(&qla4xxx_pci_driver
);
2568 iscsi_unregister_transport(&qla4xxx_iscsi_transport
);
2569 kmem_cache_destroy(srb_cachep
);
2572 module_init(qla4xxx_module_init
);
2573 module_exit(qla4xxx_module_exit
);
2575 MODULE_AUTHOR("QLogic Corporation");
2576 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
2577 MODULE_LICENSE("GPL");
2578 MODULE_VERSION(QLA4XXX_DRIVER_VERSION
);