2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2010 QLogic Corporation
5 * See LICENSE.qla4xxx for copyright and licensing details.
11 #include "ql4_inline.h"
14 * qla4xxx_copy_sense - copy sense data into cmd sense buffer
15 * @ha: Pointer to host adapter structure.
16 * @sts_entry: Pointer to status entry structure.
17 * @srb: Pointer to srb structure.
19 static void qla4xxx_copy_sense(struct scsi_qla_host
*ha
,
20 struct status_entry
*sts_entry
,
23 struct scsi_cmnd
*cmd
= srb
->cmd
;
26 memset(cmd
->sense_buffer
, 0, SCSI_SENSE_BUFFERSIZE
);
27 sense_len
= le16_to_cpu(sts_entry
->senseDataByteCnt
);
29 DEBUG2(ql4_printk(KERN_INFO
, ha
, "scsi%ld:%d:%d:%d: %s:"
30 " sense len 0\n", ha
->host_no
,
31 cmd
->device
->channel
, cmd
->device
->id
,
32 cmd
->device
->lun
, __func__
));
33 ha
->status_srb
= NULL
;
36 /* Save total available sense length,
37 * not to exceed cmd's sense buffer size */
38 sense_len
= min_t(uint16_t, sense_len
, SCSI_SENSE_BUFFERSIZE
);
39 srb
->req_sense_ptr
= cmd
->sense_buffer
;
40 srb
->req_sense_len
= sense_len
;
42 /* Copy sense from sts_entry pkt */
43 sense_len
= min_t(uint16_t, sense_len
, IOCB_MAX_SENSEDATA_LEN
);
44 memcpy(cmd
->sense_buffer
, sts_entry
->senseData
, sense_len
);
46 DEBUG2(printk(KERN_INFO
"scsi%ld:%d:%d:%d: %s: sense key = %x, "
47 "ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha
->host_no
,
48 cmd
->device
->channel
, cmd
->device
->id
,
49 cmd
->device
->lun
, __func__
,
50 sts_entry
->senseData
[2] & 0x0f,
51 sts_entry
->senseData
[7],
52 sts_entry
->senseData
[12],
53 sts_entry
->senseData
[13]));
55 DEBUG5(qla4xxx_dump_buffer(cmd
->sense_buffer
, sense_len
));
56 srb
->flags
|= SRB_GOT_SENSE
;
58 /* Update srb, in case a sts_cont pkt follows */
59 srb
->req_sense_ptr
+= sense_len
;
60 srb
->req_sense_len
-= sense_len
;
61 if (srb
->req_sense_len
!= 0)
64 ha
->status_srb
= NULL
;
68 * qla4xxx_status_cont_entry - Process a Status Continuations entry.
69 * @ha: SCSI driver HA context
70 * @sts_cont: Entry pointer
72 * Extended sense data.
75 qla4xxx_status_cont_entry(struct scsi_qla_host
*ha
,
76 struct status_cont_entry
*sts_cont
)
78 struct srb
*srb
= ha
->status_srb
;
79 struct scsi_cmnd
*cmd
;
87 DEBUG2(printk(KERN_INFO
"scsi%ld: %s: Cmd already returned "
88 "back to OS srb=%p srb->state:%d\n", ha
->host_no
,
89 __func__
, srb
, srb
->state
));
90 ha
->status_srb
= NULL
;
94 /* Copy sense data. */
95 sense_len
= min_t(uint16_t, srb
->req_sense_len
,
96 IOCB_MAX_EXT_SENSEDATA_LEN
);
97 memcpy(srb
->req_sense_ptr
, sts_cont
->ext_sense_data
, sense_len
);
98 DEBUG5(qla4xxx_dump_buffer(srb
->req_sense_ptr
, sense_len
));
100 srb
->req_sense_ptr
+= sense_len
;
101 srb
->req_sense_len
-= sense_len
;
103 /* Place command on done queue. */
104 if (srb
->req_sense_len
== 0) {
105 kref_put(&srb
->srb_ref
, qla4xxx_srb_compl
);
106 ha
->status_srb
= NULL
;
111 * qla4xxx_status_entry - processes status IOCBs
112 * @ha: Pointer to host adapter structure.
113 * @sts_entry: Pointer to status entry structure.
115 static void qla4xxx_status_entry(struct scsi_qla_host
*ha
,
116 struct status_entry
*sts_entry
)
119 struct scsi_cmnd
*cmd
;
121 struct ddb_entry
*ddb_entry
;
124 srb
= qla4xxx_del_from_active_array(ha
, le32_to_cpu(sts_entry
->handle
));
126 ql4_printk(KERN_WARNING
, ha
, "%s invalid status entry: "
127 "handle=0x%0x, srb=%p\n", __func__
,
128 sts_entry
->handle
, srb
);
130 set_bit(DPC_RESET_HA_FW_CONTEXT
, &ha
->dpc_flags
);
132 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
138 DEBUG2(printk("scsi%ld: %s: Command already returned back to "
139 "OS pkt->handle=%d srb=%p srb->state:%d\n",
140 ha
->host_no
, __func__
, sts_entry
->handle
,
142 ql4_printk(KERN_WARNING
, ha
, "Command is NULL:"
143 " already returned to OS (srb=%p)\n", srb
);
147 ddb_entry
= srb
->ddb
;
148 if (ddb_entry
== NULL
) {
149 cmd
->result
= DID_NO_CONNECT
<< 16;
150 goto status_entry_exit
;
153 residual
= le32_to_cpu(sts_entry
->residualByteCnt
);
155 /* Translate ISP error to a Linux SCSI error. */
156 scsi_status
= sts_entry
->scsiStatus
;
157 switch (sts_entry
->completionStatus
) {
160 if (sts_entry
->iscsiFlags
& ISCSI_FLAG_RESIDUAL_OVER
) {
161 cmd
->result
= DID_ERROR
<< 16;
165 if (sts_entry
->iscsiFlags
&ISCSI_FLAG_RESIDUAL_UNDER
) {
166 scsi_set_resid(cmd
, residual
);
167 if (!scsi_status
&& ((scsi_bufflen(cmd
) - residual
) <
170 cmd
->result
= DID_ERROR
<< 16;
172 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
173 "Mid-layer Data underrun0, "
175 "residual = 0x%x\n", ha
->host_no
,
176 cmd
->device
->channel
,
178 cmd
->device
->lun
, __func__
,
179 scsi_bufflen(cmd
), residual
));
184 cmd
->result
= DID_OK
<< 16 | scsi_status
;
186 if (scsi_status
!= SCSI_CHECK_CONDITION
)
189 /* Copy Sense Data into sense buffer. */
190 qla4xxx_copy_sense(ha
, sts_entry
, srb
);
194 /* Always set the status to DID_ERROR, since
195 * all conditions result in that status anyway */
196 cmd
->result
= DID_ERROR
<< 16;
199 case SCS_RESET_OCCURRED
:
200 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n",
201 ha
->host_no
, cmd
->device
->channel
,
202 cmd
->device
->id
, cmd
->device
->lun
, __func__
));
204 cmd
->result
= DID_RESET
<< 16;
208 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n",
209 ha
->host_no
, cmd
->device
->channel
,
210 cmd
->device
->id
, cmd
->device
->lun
, __func__
));
212 cmd
->result
= DID_RESET
<< 16;
216 DEBUG2(printk(KERN_INFO
"scsi%ld:%d:%d:%d: Timeout\n",
217 ha
->host_no
, cmd
->device
->channel
,
218 cmd
->device
->id
, cmd
->device
->lun
));
220 cmd
->result
= DID_TRANSPORT_DISRUPTED
<< 16;
223 * Mark device missing so that we won't continue to send
224 * I/O to this device. We should get a ddb state change
227 if (iscsi_is_session_online(ddb_entry
->sess
))
228 qla4xxx_mark_device_missing(ddb_entry
->sess
);
231 case SCS_DATA_UNDERRUN
:
232 case SCS_DATA_OVERRUN
:
233 if ((sts_entry
->iscsiFlags
& ISCSI_FLAG_RESIDUAL_OVER
) ||
234 (sts_entry
->completionStatus
== SCS_DATA_OVERRUN
)) {
235 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun\n",
237 cmd
->device
->channel
, cmd
->device
->id
,
238 cmd
->device
->lun
, __func__
));
240 cmd
->result
= DID_ERROR
<< 16;
244 scsi_set_resid(cmd
, residual
);
247 * If there is scsi_status, it takes precedense over
248 * underflow condition.
250 if (scsi_status
!= 0) {
251 cmd
->result
= DID_OK
<< 16 | scsi_status
;
253 if (scsi_status
!= SCSI_CHECK_CONDITION
)
256 /* Copy Sense Data into sense buffer. */
257 qla4xxx_copy_sense(ha
, sts_entry
, srb
);
260 * If RISC reports underrun and target does not
261 * report it then we must have a lost frame, so
262 * tell upper layer to retry it by reporting a
265 if ((sts_entry
->iscsiFlags
&
266 ISCSI_FLAG_RESIDUAL_UNDER
) == 0) {
267 cmd
->result
= DID_BUS_BUSY
<< 16;
268 } else if ((scsi_bufflen(cmd
) - residual
) <
271 * Handle mid-layer underflow???
273 * For kernels less than 2.4, the driver must
274 * return an error if an underflow is detected.
275 * For kernels equal-to and above 2.4, the
276 * mid-layer will appearantly handle the
277 * underflow by detecting the residual count --
278 * unfortunately, we do not see where this is
279 * actually being done. In the interim, we
280 * will return DID_ERROR.
282 DEBUG2(printk("scsi%ld:%d:%d:%d: %s: "
283 "Mid-layer Data underrun1, "
285 "residual = 0x%x\n", ha
->host_no
,
286 cmd
->device
->channel
,
288 cmd
->device
->lun
, __func__
,
289 scsi_bufflen(cmd
), residual
));
291 cmd
->result
= DID_ERROR
<< 16;
293 cmd
->result
= DID_OK
<< 16;
298 case SCS_DEVICE_LOGGED_OUT
:
299 case SCS_DEVICE_UNAVAILABLE
:
300 DEBUG2(printk(KERN_INFO
"scsi%ld:%d:%d:%d: SCS_DEVICE "
301 "state: 0x%x\n", ha
->host_no
,
302 cmd
->device
->channel
, cmd
->device
->id
,
303 cmd
->device
->lun
, sts_entry
->completionStatus
));
305 * Mark device missing so that we won't continue to
306 * send I/O to this device. We should get a ddb
307 * state change AEN soon.
309 if (iscsi_is_session_online(ddb_entry
->sess
))
310 qla4xxx_mark_device_missing(ddb_entry
->sess
);
312 cmd
->result
= DID_TRANSPORT_DISRUPTED
<< 16;
317 * SCSI Mid-Layer handles device queue full
319 cmd
->result
= DID_OK
<< 16 | sts_entry
->scsiStatus
;
320 DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected "
321 "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x,"
322 " iResp=%02x\n", ha
->host_no
, cmd
->device
->id
,
323 cmd
->device
->lun
, __func__
,
324 sts_entry
->completionStatus
,
325 sts_entry
->scsiStatus
, sts_entry
->state_flags
,
326 sts_entry
->iscsiFlags
,
327 sts_entry
->iscsiResponse
));
331 cmd
->result
= DID_ERROR
<< 16;
337 /* complete the request, if not waiting for status_continuation pkt */
338 srb
->cc_stat
= sts_entry
->completionStatus
;
339 if (ha
->status_srb
== NULL
)
340 kref_put(&srb
->srb_ref
, qla4xxx_srb_compl
);
344 * qla4xxx_passthru_status_entry - processes passthru status IOCBs (0x3C)
345 * @ha: Pointer to host adapter structure.
346 * @sts_entry: Pointer to status entry structure.
348 static void qla4xxx_passthru_status_entry(struct scsi_qla_host
*ha
,
349 struct passthru_status
*sts_entry
)
351 struct iscsi_task
*task
;
352 struct ddb_entry
*ddb_entry
;
353 struct ql4_task_data
*task_data
;
354 struct iscsi_cls_conn
*cls_conn
;
355 struct iscsi_conn
*conn
;
357 uint32_t fw_ddb_index
;
359 itt
= sts_entry
->handle
;
360 fw_ddb_index
= le32_to_cpu(sts_entry
->target
);
362 ddb_entry
= qla4xxx_lookup_ddb_by_fw_index(ha
, fw_ddb_index
);
364 if (ddb_entry
== NULL
) {
365 ql4_printk(KERN_ERR
, ha
, "%s: Invalid target index = 0x%x\n",
366 __func__
, sts_entry
->target
);
370 cls_conn
= ddb_entry
->conn
;
371 conn
= cls_conn
->dd_data
;
372 spin_lock(&conn
->session
->lock
);
373 task
= iscsi_itt_to_task(conn
, itt
);
374 spin_unlock(&conn
->session
->lock
);
377 ql4_printk(KERN_ERR
, ha
, "%s: Task is NULL\n", __func__
);
381 task_data
= task
->dd_data
;
382 memcpy(&task_data
->sts
, sts_entry
, sizeof(struct passthru_status
));
383 ha
->req_q_count
+= task_data
->iocb_req_cnt
;
384 ha
->iocb_cnt
-= task_data
->iocb_req_cnt
;
385 queue_work(ha
->task_wq
, &task_data
->task_work
);
388 static struct mrb
*qla4xxx_del_mrb_from_active_array(struct scsi_qla_host
*ha
,
391 struct mrb
*mrb
= NULL
;
393 /* validate handle and remove from active array */
394 if (index
>= MAX_MRB
)
397 mrb
= ha
->active_mrb_array
[index
];
398 ha
->active_mrb_array
[index
] = NULL
;
402 /* update counters */
403 ha
->req_q_count
+= mrb
->iocb_cnt
;
404 ha
->iocb_cnt
-= mrb
->iocb_cnt
;
409 static void qla4xxx_mbox_status_entry(struct scsi_qla_host
*ha
,
410 struct mbox_status_iocb
*mbox_sts_entry
)
416 mrb
= qla4xxx_del_mrb_from_active_array(ha
,
417 le32_to_cpu(mbox_sts_entry
->handle
));
420 ql4_printk(KERN_WARNING
, ha
, "%s: mrb[%d] is null\n", __func__
,
421 mbox_sts_entry
->handle
);
425 switch (mrb
->mbox_cmd
) {
427 DEBUG2(ql4_printk(KERN_INFO
, ha
, "%s: mbox_cmd = 0x%x, "
428 "mbox_sts[0] = 0x%x, mbox_sts[6] = 0x%x\n",
429 __func__
, mrb
->mbox_cmd
,
430 mbox_sts_entry
->out_mbox
[0],
431 mbox_sts_entry
->out_mbox
[6]));
433 if (mbox_sts_entry
->out_mbox
[0] == MBOX_STS_COMMAND_COMPLETE
)
434 status
= ISCSI_PING_SUCCESS
;
436 status
= mbox_sts_entry
->out_mbox
[6];
438 data_size
= sizeof(mbox_sts_entry
->out_mbox
);
440 qla4xxx_post_ping_evt_work(ha
, status
, mrb
->pid
, data_size
,
441 (uint8_t *) mbox_sts_entry
->out_mbox
);
445 DEBUG2(ql4_printk(KERN_WARNING
, ha
, "%s: invalid mbox_cmd = "
446 "0x%x\n", __func__
, mrb
->mbox_cmd
));
454 * qla4xxx_process_response_queue - process response queue completions
455 * @ha: Pointer to host adapter structure.
457 * This routine process response queue completions in interrupt context.
458 * Hardware_lock locked upon entry
460 void qla4xxx_process_response_queue(struct scsi_qla_host
*ha
)
463 struct srb
*srb
= NULL
;
464 struct status_entry
*sts_entry
;
466 /* Process all responses from response queue */
467 while ((ha
->response_ptr
->signature
!= RESPONSE_PROCESSED
)) {
468 sts_entry
= (struct status_entry
*) ha
->response_ptr
;
471 /* Advance pointers for next entry */
472 if (ha
->response_out
== (RESPONSE_QUEUE_DEPTH
- 1)) {
473 ha
->response_out
= 0;
474 ha
->response_ptr
= ha
->response_ring
;
481 switch (sts_entry
->hdr
.entryType
) {
484 qla4xxx_status_entry(ha
, sts_entry
);
487 case ET_PASSTHRU_STATUS
:
488 if (sts_entry
->hdr
.systemDefined
== SD_ISCSI_PDU
)
489 qla4xxx_passthru_status_entry(ha
,
490 (struct passthru_status
*)sts_entry
);
492 ql4_printk(KERN_ERR
, ha
,
493 "%s: Invalid status received\n",
498 case ET_STATUS_CONTINUATION
:
499 qla4xxx_status_cont_entry(ha
,
500 (struct status_cont_entry
*) sts_entry
);
504 /* ISP device queue is full. Command not
505 * accepted by ISP. Queue command for
508 srb
= qla4xxx_del_from_active_array(ha
,
509 le32_to_cpu(sts_entry
->
512 goto exit_prq_invalid_handle
;
514 DEBUG2(printk("scsi%ld: %s: FW device queue full, "
515 "srb %p\n", ha
->host_no
, __func__
, srb
));
517 /* ETRY normally by sending it back with
519 srb
->cmd
->result
= DID_BUS_BUSY
<< 16;
520 kref_put(&srb
->srb_ref
, qla4xxx_srb_compl
);
524 /* Just throw away the continuation entries */
525 DEBUG2(printk("scsi%ld: %s: Continuation entry - "
526 "ignoring\n", ha
->host_no
, __func__
));
530 DEBUG2(ql4_printk(KERN_INFO
, ha
,
531 "%s: mbox status IOCB\n", __func__
));
532 qla4xxx_mbox_status_entry(ha
,
533 (struct mbox_status_iocb
*)sts_entry
);
538 * Invalid entry in response queue, reset RISC
541 DEBUG2(printk("scsi%ld: %s: Invalid entry %x in "
542 "response queue \n", ha
->host_no
,
544 sts_entry
->hdr
.entryType
));
547 ((struct response
*)sts_entry
)->signature
= RESPONSE_PROCESSED
;
552 * Tell ISP we're done with response(s). This also clears the interrupt.
554 ha
->isp_ops
->complete_iocb(ha
);
558 exit_prq_invalid_handle
:
559 DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n",
560 ha
->host_no
, __func__
, srb
, sts_entry
->hdr
.entryType
,
561 sts_entry
->completionStatus
));
564 ha
->isp_ops
->complete_iocb(ha
);
565 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
569 * qla4xxx_isr_decode_mailbox - decodes mailbox status
570 * @ha: Pointer to host adapter structure.
571 * @mailbox_status: Mailbox status.
573 * This routine decodes the mailbox status during the ISR.
574 * Hardware_lock locked upon entry. runs in interrupt context.
576 static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host
* ha
,
577 uint32_t mbox_status
)
580 uint32_t mbox_sts
[MBOX_AEN_REG_COUNT
];
582 if ((mbox_status
== MBOX_STS_BUSY
) ||
583 (mbox_status
== MBOX_STS_INTERMEDIATE_COMPLETION
) ||
584 (mbox_status
>> 12 == MBOX_COMPLETION_STATUS
)) {
585 ha
->mbox_status
[0] = mbox_status
;
587 if (test_bit(AF_MBOX_COMMAND
, &ha
->flags
)) {
589 * Copy all mailbox registers to a temporary
590 * location and set mailbox command done flag
592 for (i
= 0; i
< ha
->mbox_status_count
; i
++)
593 ha
->mbox_status
[i
] = is_qla8022(ha
)
594 ? readl(&ha
->qla4_8xxx_reg
->mailbox_out
[i
])
595 : readl(&ha
->reg
->mailbox
[i
]);
597 set_bit(AF_MBOX_COMMAND_DONE
, &ha
->flags
);
599 if (test_bit(AF_MBOX_COMMAND_NOPOLL
, &ha
->flags
))
600 complete(&ha
->mbx_intr_comp
);
602 } else if (mbox_status
>> 12 == MBOX_ASYNC_EVENT_STATUS
) {
603 for (i
= 0; i
< MBOX_AEN_REG_COUNT
; i
++)
604 mbox_sts
[i
] = is_qla8022(ha
)
605 ? readl(&ha
->qla4_8xxx_reg
->mailbox_out
[i
])
606 : readl(&ha
->reg
->mailbox
[i
]);
608 /* Immediately process the AENs that don't require much work.
609 * Only queue the database_changed AENs */
610 if (ha
->aen_log
.count
< MAX_AEN_ENTRIES
) {
611 for (i
= 0; i
< MBOX_AEN_REG_COUNT
; i
++)
612 ha
->aen_log
.entry
[ha
->aen_log
.count
].mbox_sts
[i
] =
616 switch (mbox_status
) {
617 case MBOX_ASTS_SYSTEM_ERROR
:
618 /* Log Mailbox registers */
619 ql4_printk(KERN_INFO
, ha
, "%s: System Err\n", __func__
);
620 qla4xxx_dump_registers(ha
);
622 if (ql4xdontresethba
) {
623 DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n",
624 ha
->host_no
, __func__
));
626 set_bit(AF_GET_CRASH_RECORD
, &ha
->flags
);
627 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
631 case MBOX_ASTS_REQUEST_TRANSFER_ERROR
:
632 case MBOX_ASTS_RESPONSE_TRANSFER_ERROR
:
633 case MBOX_ASTS_NVRAM_INVALID
:
634 case MBOX_ASTS_IP_ADDRESS_CHANGED
:
635 case MBOX_ASTS_DHCP_LEASE_EXPIRED
:
636 DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, "
637 "Reset HA\n", ha
->host_no
, mbox_status
));
639 set_bit(DPC_RESET_HA_FW_CONTEXT
,
642 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
645 case MBOX_ASTS_LINK_UP
:
646 set_bit(AF_LINK_UP
, &ha
->flags
);
647 if (test_bit(AF_INIT_DONE
, &ha
->flags
))
648 set_bit(DPC_LINK_CHANGED
, &ha
->dpc_flags
);
650 ql4_printk(KERN_INFO
, ha
, "%s: LINK UP\n", __func__
);
651 qla4xxx_post_aen_work(ha
, ISCSI_EVENT_LINKUP
,
653 (uint8_t *) mbox_sts
);
656 case MBOX_ASTS_LINK_DOWN
:
657 clear_bit(AF_LINK_UP
, &ha
->flags
);
658 if (test_bit(AF_INIT_DONE
, &ha
->flags
))
659 set_bit(DPC_LINK_CHANGED
, &ha
->dpc_flags
);
661 ql4_printk(KERN_INFO
, ha
, "%s: LINK DOWN\n", __func__
);
662 qla4xxx_post_aen_work(ha
, ISCSI_EVENT_LINKDOWN
,
664 (uint8_t *) mbox_sts
);
667 case MBOX_ASTS_HEARTBEAT
:
668 ha
->seconds_since_last_heartbeat
= 0;
671 case MBOX_ASTS_DHCP_LEASE_ACQUIRED
:
672 DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE "
673 "ACQUIRED\n", ha
->host_no
, mbox_status
));
674 set_bit(DPC_GET_DHCP_IP_ADDR
, &ha
->dpc_flags
);
677 case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM
:
678 case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED
: /* Target
681 case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED
: /* Connection mode */
682 case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR
:
683 case MBOX_ASTS_SUBNET_STATE_CHANGE
:
684 case MBOX_ASTS_DUPLICATE_IP
:
686 DEBUG2(printk("scsi%ld: AEN %04x\n", ha
->host_no
,
690 case MBOX_ASTS_IP_ADDR_STATE_CHANGED
:
691 printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, "
692 "mbox_sts[3]=%04x\n", ha
->host_no
, mbox_sts
[0],
693 mbox_sts
[2], mbox_sts
[3]);
695 /* mbox_sts[2] = Old ACB state
696 * mbox_sts[3] = new ACB state */
697 if ((mbox_sts
[3] == ACB_STATE_VALID
) &&
698 ((mbox_sts
[2] == ACB_STATE_TENTATIVE
) ||
699 (mbox_sts
[2] == ACB_STATE_ACQUIRING
)))
700 set_bit(DPC_GET_DHCP_IP_ADDR
, &ha
->dpc_flags
);
701 else if ((mbox_sts
[3] == ACB_STATE_ACQUIRING
) &&
702 (mbox_sts
[2] == ACB_STATE_VALID
)) {
704 set_bit(DPC_RESET_HA_FW_CONTEXT
,
707 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
708 } else if ((mbox_sts
[3] == ACB_STATE_UNCONFIGURED
))
709 complete(&ha
->disable_acb_comp
);
712 case MBOX_ASTS_MAC_ADDRESS_CHANGED
:
715 DEBUG2(printk(KERN_INFO
"scsi%ld: AEN %04x, "
716 "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n",
717 ha
->host_no
, mbox_sts
[0],
718 mbox_sts
[1], mbox_sts
[2]));
721 case MBOX_ASTS_SELF_TEST_FAILED
:
722 case MBOX_ASTS_LOGIN_FAILED
:
724 DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, "
725 "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n",
726 ha
->host_no
, mbox_sts
[0], mbox_sts
[1],
727 mbox_sts
[2], mbox_sts
[3]));
730 case MBOX_ASTS_DATABASE_CHANGED
:
731 /* Queue AEN information and process it in the DPC
733 if (ha
->aen_q_count
> 0) {
735 /* decrement available counter */
738 for (i
= 0; i
< MBOX_AEN_REG_COUNT
; i
++)
739 ha
->aen_q
[ha
->aen_in
].mbox_sts
[i
] =
742 /* print debug message */
743 DEBUG2(printk("scsi%ld: AEN[%d] %04x queued "
744 "mb1:0x%x mb2:0x%x mb3:0x%x "
745 "mb4:0x%x mb5:0x%x\n",
746 ha
->host_no
, ha
->aen_in
,
747 mbox_sts
[0], mbox_sts
[1],
748 mbox_sts
[2], mbox_sts
[3],
749 mbox_sts
[4], mbox_sts
[5]));
751 /* advance pointer */
753 if (ha
->aen_in
== MAX_AEN_ENTRIES
)
756 /* The DPC routine will process the aen */
757 set_bit(DPC_AEN
, &ha
->dpc_flags
);
759 DEBUG2(printk("scsi%ld: %s: aen %04x, queue "
760 "overflowed! AEN LOST!!\n",
761 ha
->host_no
, __func__
,
764 DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n",
767 for (i
= 0; i
< MAX_AEN_ENTRIES
; i
++) {
768 DEBUG2(printk("AEN[%d] %04x %04x %04x "
769 "%04x\n", i
, mbox_sts
[0],
770 mbox_sts
[1], mbox_sts
[2],
776 case MBOX_ASTS_TXSCVR_INSERTED
:
777 DEBUG2(printk(KERN_WARNING
778 "scsi%ld: AEN %04x Transceiver"
779 " inserted\n", ha
->host_no
, mbox_sts
[0]));
782 case MBOX_ASTS_TXSCVR_REMOVED
:
783 DEBUG2(printk(KERN_WARNING
784 "scsi%ld: AEN %04x Transceiver"
785 " removed\n", ha
->host_no
, mbox_sts
[0]));
789 DEBUG2(printk(KERN_WARNING
790 "scsi%ld: AEN %04x UNKNOWN\n",
791 ha
->host_no
, mbox_sts
[0]));
795 DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n",
796 ha
->host_no
, mbox_status
));
798 ha
->mbox_status
[0] = mbox_status
;
803 * qla4_8xxx_interrupt_service_routine - isr
804 * @ha: pointer to host adapter structure.
806 * This is the main interrupt service routine.
807 * hardware_lock locked upon entry. runs in interrupt context.
809 void qla4_8xxx_interrupt_service_routine(struct scsi_qla_host
*ha
,
810 uint32_t intr_status
)
812 /* Process response queue interrupt. */
813 if (intr_status
& HSRX_RISC_IOCB_INT
)
814 qla4xxx_process_response_queue(ha
);
816 /* Process mailbox/asynch event interrupt.*/
817 if (intr_status
& HSRX_RISC_MB_INT
)
818 qla4xxx_isr_decode_mailbox(ha
,
819 readl(&ha
->qla4_8xxx_reg
->mailbox_out
[0]));
821 /* clear the interrupt */
822 writel(0, &ha
->qla4_8xxx_reg
->host_int
);
823 readl(&ha
->qla4_8xxx_reg
->host_int
);
827 * qla4xxx_interrupt_service_routine - isr
828 * @ha: pointer to host adapter structure.
830 * This is the main interrupt service routine.
831 * hardware_lock locked upon entry. runs in interrupt context.
833 void qla4xxx_interrupt_service_routine(struct scsi_qla_host
* ha
,
834 uint32_t intr_status
)
836 /* Process response queue interrupt. */
837 if (intr_status
& CSR_SCSI_COMPLETION_INTR
)
838 qla4xxx_process_response_queue(ha
);
840 /* Process mailbox/asynch event interrupt.*/
841 if (intr_status
& CSR_SCSI_PROCESSOR_INTR
) {
842 qla4xxx_isr_decode_mailbox(ha
,
843 readl(&ha
->reg
->mailbox
[0]));
845 /* Clear Mailbox Interrupt */
846 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR
),
847 &ha
->reg
->ctrl_status
);
848 readl(&ha
->reg
->ctrl_status
);
853 * qla4_8xxx_spurious_interrupt - processes spurious interrupt
854 * @ha: pointer to host adapter structure.
858 static void qla4_8xxx_spurious_interrupt(struct scsi_qla_host
*ha
,
864 DEBUG2(ql4_printk(KERN_INFO
, ha
, "Spurious Interrupt\n"));
865 if (is_qla8022(ha
)) {
866 writel(0, &ha
->qla4_8xxx_reg
->host_int
);
867 if (test_bit(AF_INTx_ENABLED
, &ha
->flags
))
868 qla4_8xxx_wr_32(ha
, ha
->nx_legacy_intr
.tgt_mask_reg
,
871 ha
->spurious_int_count
++;
875 * qla4xxx_intr_handler - hardware interrupt handler.
877 * @dev_id: Pointer to host adapter structure
879 irqreturn_t
qla4xxx_intr_handler(int irq
, void *dev_id
)
881 struct scsi_qla_host
*ha
;
882 uint32_t intr_status
;
883 unsigned long flags
= 0;
884 uint8_t reqs_count
= 0;
886 ha
= (struct scsi_qla_host
*) dev_id
;
888 DEBUG2(printk(KERN_INFO
889 "qla4xxx: Interrupt with NULL host ptr\n"));
893 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
897 * Repeatedly service interrupts up to a maximum of
898 * MAX_REQS_SERVICED_PER_INTR
902 * Read interrupt status
904 if (ha
->isp_ops
->rd_shdw_rsp_q_in(ha
) !=
906 intr_status
= CSR_SCSI_COMPLETION_INTR
;
908 intr_status
= readl(&ha
->reg
->ctrl_status
);
911 (CSR_SCSI_RESET_INTR
|CSR_FATAL_ERROR
|INTR_PENDING
)) == 0) {
913 ha
->spurious_int_count
++;
917 if (intr_status
& CSR_FATAL_ERROR
) {
918 DEBUG2(printk(KERN_INFO
"scsi%ld: Fatal Error, "
919 "Status 0x%04x\n", ha
->host_no
,
920 readl(isp_port_error_status (ha
))));
922 /* Issue Soft Reset to clear this error condition.
923 * This will prevent the RISC from repeatedly
924 * interrupting the driver; thus, allowing the DPC to
925 * get scheduled to continue error recovery.
926 * NOTE: Disabling RISC interrupts does not work in
927 * this case, as CSR_FATAL_ERROR overrides
928 * CSR_SCSI_INTR_ENABLE */
929 if ((readl(&ha
->reg
->ctrl_status
) &
930 CSR_SCSI_RESET_INTR
) == 0) {
931 writel(set_rmask(CSR_SOFT_RESET
),
932 &ha
->reg
->ctrl_status
);
933 readl(&ha
->reg
->ctrl_status
);
936 writel(set_rmask(CSR_FATAL_ERROR
),
937 &ha
->reg
->ctrl_status
);
938 readl(&ha
->reg
->ctrl_status
);
940 __qla4xxx_disable_intrs(ha
);
942 set_bit(DPC_RESET_HA
, &ha
->dpc_flags
);
945 } else if (intr_status
& CSR_SCSI_RESET_INTR
) {
946 clear_bit(AF_ONLINE
, &ha
->flags
);
947 __qla4xxx_disable_intrs(ha
);
949 writel(set_rmask(CSR_SCSI_RESET_INTR
),
950 &ha
->reg
->ctrl_status
);
951 readl(&ha
->reg
->ctrl_status
);
953 if (!test_bit(AF_HA_REMOVAL
, &ha
->flags
))
954 set_bit(DPC_RESET_HA_INTR
, &ha
->dpc_flags
);
957 } else if (intr_status
& INTR_PENDING
) {
958 ha
->isp_ops
->interrupt_service_routine(ha
, intr_status
);
959 ha
->total_io_count
++;
960 if (++reqs_count
== MAX_REQS_SERVICED_PER_INTR
)
965 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
971 * qla4_8xxx_intr_handler - hardware interrupt handler.
973 * @dev_id: Pointer to host adapter structure
975 irqreturn_t
qla4_8xxx_intr_handler(int irq
, void *dev_id
)
977 struct scsi_qla_host
*ha
= dev_id
;
978 uint32_t intr_status
;
980 unsigned long flags
= 0;
981 uint8_t reqs_count
= 0;
983 if (unlikely(pci_channel_offline(ha
->pdev
)))
987 status
= qla4_8xxx_rd_32(ha
, ISR_INT_VECTOR
);
988 if (!(status
& ha
->nx_legacy_intr
.int_vec_bit
))
991 status
= qla4_8xxx_rd_32(ha
, ISR_INT_STATE_REG
);
992 if (!ISR_IS_LEGACY_INTR_TRIGGERED(status
)) {
993 DEBUG2(ql4_printk(KERN_INFO
, ha
,
994 "%s legacy Int not triggered\n", __func__
));
998 /* clear the interrupt */
999 qla4_8xxx_wr_32(ha
, ha
->nx_legacy_intr
.tgt_status_reg
, 0xffffffff);
1001 /* read twice to ensure write is flushed */
1002 qla4_8xxx_rd_32(ha
, ISR_INT_VECTOR
);
1003 qla4_8xxx_rd_32(ha
, ISR_INT_VECTOR
);
1005 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1007 if (!(readl(&ha
->qla4_8xxx_reg
->host_int
) &
1008 ISRX_82XX_RISC_INT
)) {
1009 qla4_8xxx_spurious_interrupt(ha
, reqs_count
);
1012 intr_status
= readl(&ha
->qla4_8xxx_reg
->host_status
);
1014 (HSRX_RISC_MB_INT
| HSRX_RISC_IOCB_INT
)) == 0) {
1015 qla4_8xxx_spurious_interrupt(ha
, reqs_count
);
1019 ha
->isp_ops
->interrupt_service_routine(ha
, intr_status
);
1021 /* Enable Interrupt */
1022 qla4_8xxx_wr_32(ha
, ha
->nx_legacy_intr
.tgt_mask_reg
, 0xfbff);
1024 if (++reqs_count
== MAX_REQS_SERVICED_PER_INTR
)
1028 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1033 qla4_8xxx_msi_handler(int irq
, void *dev_id
)
1035 struct scsi_qla_host
*ha
;
1037 ha
= (struct scsi_qla_host
*) dev_id
;
1039 DEBUG2(printk(KERN_INFO
1040 "qla4xxx: MSIX: Interrupt with NULL host ptr\n"));
1045 /* clear the interrupt */
1046 qla4_8xxx_wr_32(ha
, ha
->nx_legacy_intr
.tgt_status_reg
, 0xffffffff);
1048 /* read twice to ensure write is flushed */
1049 qla4_8xxx_rd_32(ha
, ISR_INT_VECTOR
);
1050 qla4_8xxx_rd_32(ha
, ISR_INT_VECTOR
);
1052 return qla4_8xxx_default_intr_handler(irq
, dev_id
);
1056 * qla4_8xxx_default_intr_handler - hardware interrupt handler.
1058 * @dev_id: Pointer to host adapter structure
1060 * This interrupt handler is called directly for MSI-X, and
1061 * called indirectly for MSI.
1064 qla4_8xxx_default_intr_handler(int irq
, void *dev_id
)
1066 struct scsi_qla_host
*ha
= dev_id
;
1067 unsigned long flags
;
1068 uint32_t intr_status
;
1069 uint8_t reqs_count
= 0;
1071 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1073 if (!(readl(&ha
->qla4_8xxx_reg
->host_int
) &
1074 ISRX_82XX_RISC_INT
)) {
1075 qla4_8xxx_spurious_interrupt(ha
, reqs_count
);
1079 intr_status
= readl(&ha
->qla4_8xxx_reg
->host_status
);
1081 (HSRX_RISC_MB_INT
| HSRX_RISC_IOCB_INT
)) == 0) {
1082 qla4_8xxx_spurious_interrupt(ha
, reqs_count
);
1086 ha
->isp_ops
->interrupt_service_routine(ha
, intr_status
);
1088 if (++reqs_count
== MAX_REQS_SERVICED_PER_INTR
)
1093 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1098 qla4_8xxx_msix_rsp_q(int irq
, void *dev_id
)
1100 struct scsi_qla_host
*ha
= dev_id
;
1101 unsigned long flags
;
1103 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1104 qla4xxx_process_response_queue(ha
);
1105 writel(0, &ha
->qla4_8xxx_reg
->host_int
);
1106 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1113 * qla4xxx_process_aen - processes AENs generated by firmware
1114 * @ha: pointer to host adapter structure.
1115 * @process_aen: type of AENs to process
1117 * Processes specific types of Asynchronous Events generated by firmware.
1118 * The type of AENs to process is specified by process_aen and can be
1119 * PROCESS_ALL_AENS 0
1120 * FLUSH_DDB_CHANGED_AENS 1
1121 * RELOGIN_DDB_CHANGED_AENS 2
1123 void qla4xxx_process_aen(struct scsi_qla_host
* ha
, uint8_t process_aen
)
1125 uint32_t mbox_sts
[MBOX_AEN_REG_COUNT
];
1128 unsigned long flags
;
1130 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1131 while (ha
->aen_out
!= ha
->aen_in
) {
1132 aen
= &ha
->aen_q
[ha
->aen_out
];
1133 /* copy aen information to local structure */
1134 for (i
= 0; i
< MBOX_AEN_REG_COUNT
; i
++)
1135 mbox_sts
[i
] = aen
->mbox_sts
[i
];
1140 if (ha
->aen_out
== MAX_AEN_ENTRIES
)
1143 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1145 DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x"
1146 " mbx3=0x%08x mbx4=0x%08x\n", ha
->host_no
,
1147 (ha
->aen_out
? (ha
->aen_out
-1): (MAX_AEN_ENTRIES
-1)),
1148 mbox_sts
[0], mbox_sts
[1], mbox_sts
[2],
1149 mbox_sts
[3], mbox_sts
[4]));
1151 switch (mbox_sts
[0]) {
1152 case MBOX_ASTS_DATABASE_CHANGED
:
1153 switch (process_aen
) {
1154 case FLUSH_DDB_CHANGED_AENS
:
1155 DEBUG2(printk("scsi%ld: AEN[%d] %04x, index "
1156 "[%d] state=%04x FLUSHED!\n",
1157 ha
->host_no
, ha
->aen_out
,
1158 mbox_sts
[0], mbox_sts
[2],
1161 case PROCESS_ALL_AENS
:
1163 /* Specific device. */
1164 if (mbox_sts
[1] == 1)
1165 qla4xxx_process_ddb_changed(ha
,
1166 mbox_sts
[2], mbox_sts
[3],
1171 spin_lock_irqsave(&ha
->hardware_lock
, flags
);
1173 spin_unlock_irqrestore(&ha
->hardware_lock
, flags
);
1176 int qla4xxx_request_irqs(struct scsi_qla_host
*ha
)
1180 if (!is_qla8022(ha
))
1183 if (ql4xenablemsix
== 2)
1186 if (ql4xenablemsix
== 0 || ql4xenablemsix
!= 1)
1190 ret
= qla4_8xxx_enable_msix(ha
);
1192 DEBUG2(ql4_printk(KERN_INFO
, ha
,
1193 "MSI-X: Enabled (0x%X).\n", ha
->revision_id
));
1197 ql4_printk(KERN_WARNING
, ha
,
1198 "MSI-X: Falling back-to MSI mode -- %d.\n", ret
);
1202 ret
= pci_enable_msi(ha
->pdev
);
1204 ret
= request_irq(ha
->pdev
->irq
, qla4_8xxx_msi_handler
,
1205 0, DRIVER_NAME
, ha
);
1207 DEBUG2(ql4_printk(KERN_INFO
, ha
, "MSI: Enabled.\n"));
1208 set_bit(AF_MSI_ENABLED
, &ha
->flags
);
1211 ql4_printk(KERN_WARNING
, ha
,
1212 "MSI: Failed to reserve interrupt %d "
1213 "already in use.\n", ha
->pdev
->irq
);
1214 pci_disable_msi(ha
->pdev
);
1217 ql4_printk(KERN_WARNING
, ha
,
1218 "MSI: Falling back-to INTx mode -- %d.\n", ret
);
1222 ret
= request_irq(ha
->pdev
->irq
, ha
->isp_ops
->intr_handler
,
1223 IRQF_SHARED
, DRIVER_NAME
, ha
);
1225 DEBUG2(ql4_printk(KERN_INFO
, ha
, "INTx: Enabled.\n"));
1226 set_bit(AF_INTx_ENABLED
, &ha
->flags
);
1230 ql4_printk(KERN_WARNING
, ha
,
1231 "INTx: Failed to reserve interrupt %d already in"
1232 " use.\n", ha
->pdev
->irq
);
1237 set_bit(AF_IRQ_ATTACHED
, &ha
->flags
);
1238 ha
->host
->irq
= ha
->pdev
->irq
;
1239 ql4_printk(KERN_INFO
, ha
, "%s: irq %d attached\n",
1240 __func__
, ha
->pdev
->irq
);
1244 void qla4xxx_free_irqs(struct scsi_qla_host
*ha
)
1246 if (test_bit(AF_MSIX_ENABLED
, &ha
->flags
))
1247 qla4_8xxx_disable_msix(ha
);
1248 else if (test_and_clear_bit(AF_MSI_ENABLED
, &ha
->flags
)) {
1249 free_irq(ha
->pdev
->irq
, ha
);
1250 pci_disable_msi(ha
->pdev
);
1251 } else if (test_and_clear_bit(AF_INTx_ENABLED
, &ha
->flags
))
1252 free_irq(ha
->pdev
->irq
, ha
);