1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * QLogic iSCSI HBA Driver
4 * Copyright (c) 2003-2013 QLogic Corporation
5 */
6
7 #include "ql4_def.h"
8 #include "ql4_glbl.h"
9 #include "ql4_dbg.h"
10 #include "ql4_inline.h"
11
12 /**
13 * qla4xxx_copy_sense - copy sense data into cmd sense buffer
14 * @ha: Pointer to host adapter structure.
15 * @sts_entry: Pointer to status entry structure.
16 * @srb: Pointer to srb structure.
17 **/
qla4xxx_copy_sense(struct scsi_qla_host * ha,struct status_entry * sts_entry,struct srb * srb)18 static void qla4xxx_copy_sense(struct scsi_qla_host *ha,
19 struct status_entry *sts_entry,
20 struct srb *srb)
21 {
22 struct scsi_cmnd *cmd = srb->cmd;
23 uint16_t sense_len;
24
25 memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
26 sense_len = le16_to_cpu(sts_entry->senseDataByteCnt);
27 if (sense_len == 0) {
28 DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%d:%llu: %s:"
29 " sense len 0\n", ha->host_no,
30 cmd->device->channel, cmd->device->id,
31 cmd->device->lun, __func__));
32 ha->status_srb = NULL;
33 return;
34 }
35 /* Save total available sense length,
36 * not to exceed cmd's sense buffer size */
37 sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE);
38 srb->req_sense_ptr = cmd->sense_buffer;
39 srb->req_sense_len = sense_len;
40
41 /* Copy sense from sts_entry pkt */
42 sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN);
43 memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len);
44
45 DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%llu: %s: sense key = %x, "
46 "ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no,
47 cmd->device->channel, cmd->device->id,
48 cmd->device->lun, __func__,
49 sts_entry->senseData[2] & 0x0f,
50 sts_entry->senseData[7],
51 sts_entry->senseData[12],
52 sts_entry->senseData[13]));
53
54 DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len));
55 srb->flags |= SRB_GOT_SENSE;
56
57 /* Update srb, in case a sts_cont pkt follows */
58 srb->req_sense_ptr += sense_len;
59 srb->req_sense_len -= sense_len;
60 if (srb->req_sense_len != 0)
61 ha->status_srb = srb;
62 else
63 ha->status_srb = NULL;
64 }
65
66 /**
67 * qla4xxx_status_cont_entry - Process a Status Continuations entry.
68 * @ha: SCSI driver HA context
69 * @sts_cont: Entry pointer
70 *
71 * Extended sense data.
72 */
73 static void
qla4xxx_status_cont_entry(struct scsi_qla_host * ha,struct status_cont_entry * sts_cont)74 qla4xxx_status_cont_entry(struct scsi_qla_host *ha,
75 struct status_cont_entry *sts_cont)
76 {
77 struct srb *srb = ha->status_srb;
78 struct scsi_cmnd *cmd;
79 uint16_t sense_len;
80
81 if (srb == NULL)
82 return;
83
84 cmd = srb->cmd;
85 if (cmd == NULL) {
86 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned "
87 "back to OS srb=%p srb->state:%d\n", ha->host_no,
88 __func__, srb, srb->state));
89 ha->status_srb = NULL;
90 return;
91 }
92
93 /* Copy sense data. */
94 sense_len = min_t(uint16_t, srb->req_sense_len,
95 IOCB_MAX_EXT_SENSEDATA_LEN);
96 memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len);
97 DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len));
98
99 srb->req_sense_ptr += sense_len;
100 srb->req_sense_len -= sense_len;
101
102 /* Place command on done queue. */
103 if (srb->req_sense_len == 0) {
104 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
105 ha->status_srb = NULL;
106 }
107 }
108
109 /**
110 * qla4xxx_status_entry - processes status IOCBs
111 * @ha: Pointer to host adapter structure.
112 * @sts_entry: Pointer to status entry structure.
113 **/
qla4xxx_status_entry(struct scsi_qla_host * ha,struct status_entry * sts_entry)114 static void qla4xxx_status_entry(struct scsi_qla_host *ha,
115 struct status_entry *sts_entry)
116 {
117 uint8_t scsi_status;
118 struct scsi_cmnd *cmd;
119 struct srb *srb;
120 struct ddb_entry *ddb_entry;
121 uint32_t residual;
122
123 srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle));
124 if (!srb) {
125 ql4_printk(KERN_WARNING, ha, "%s invalid status entry: "
126 "handle=0x%0x, srb=%p\n", __func__,
127 sts_entry->handle, srb);
128 if (is_qla80XX(ha))
129 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
130 else
131 set_bit(DPC_RESET_HA, &ha->dpc_flags);
132 return;
133 }
134
135 cmd = srb->cmd;
136 if (cmd == NULL) {
137 DEBUG2(printk("scsi%ld: %s: Command already returned back to "
138 "OS pkt->handle=%d srb=%p srb->state:%d\n",
139 ha->host_no, __func__, sts_entry->handle,
140 srb, srb->state));
141 ql4_printk(KERN_WARNING, ha, "Command is NULL:"
142 " already returned to OS (srb=%p)\n", srb);
143 return;
144 }
145
146 ddb_entry = srb->ddb;
147 if (ddb_entry == NULL) {
148 cmd->result = DID_NO_CONNECT << 16;
149 goto status_entry_exit;
150 }
151
152 residual = le32_to_cpu(sts_entry->residualByteCnt);
153
154 /* Translate ISP error to a Linux SCSI error. */
155 scsi_status = sts_entry->scsiStatus;
156 switch (sts_entry->completionStatus) {
157 case SCS_COMPLETE:
158
159 if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) {
160 cmd->result = DID_ERROR << 16;
161 break;
162 }
163
164 if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) {
165 scsi_set_resid(cmd, residual);
166 if (!scsi_status && ((scsi_bufflen(cmd) - residual) <
167 cmd->underflow)) {
168
169 cmd->result = DID_ERROR << 16;
170
171 DEBUG2(printk("scsi%ld:%d:%d:%llu: %s: "
172 "Mid-layer Data underrun0, "
173 "xferlen = 0x%x, "
174 "residual = 0x%x\n", ha->host_no,
175 cmd->device->channel,
176 cmd->device->id,
177 cmd->device->lun, __func__,
178 scsi_bufflen(cmd), residual));
179 break;
180 }
181 }
182
183 cmd->result = DID_OK << 16 | scsi_status;
184
185 if (scsi_status != SAM_STAT_CHECK_CONDITION)
186 break;
187
188 /* Copy Sense Data into sense buffer. */
189 qla4xxx_copy_sense(ha, sts_entry, srb);
190 break;
191
192 case SCS_INCOMPLETE:
193 /* Always set the status to DID_ERROR, since
194 * all conditions result in that status anyway */
195 cmd->result = DID_ERROR << 16;
196 break;
197
198 case SCS_RESET_OCCURRED:
199 DEBUG2(printk("scsi%ld:%d:%d:%llu: %s: Device RESET occurred\n",
200 ha->host_no, cmd->device->channel,
201 cmd->device->id, cmd->device->lun, __func__));
202
203 cmd->result = DID_RESET << 16;
204 break;
205
206 case SCS_ABORTED:
207 DEBUG2(printk("scsi%ld:%d:%d:%llu: %s: Abort occurred\n",
208 ha->host_no, cmd->device->channel,
209 cmd->device->id, cmd->device->lun, __func__));
210
211 cmd->result = DID_RESET << 16;
212 break;
213
214 case SCS_TIMEOUT:
215 DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%llu: Timeout\n",
216 ha->host_no, cmd->device->channel,
217 cmd->device->id, cmd->device->lun));
218
219 cmd->result = DID_TRANSPORT_DISRUPTED << 16;
220
221 /*
222 * Mark device missing so that we won't continue to send
223 * I/O to this device. We should get a ddb state change
224 * AEN soon.
225 */
226 if (iscsi_is_session_online(ddb_entry->sess))
227 qla4xxx_mark_device_missing(ddb_entry->sess);
228 break;
229
230 case SCS_DATA_UNDERRUN:
231 case SCS_DATA_OVERRUN:
232 if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) ||
233 (sts_entry->completionStatus == SCS_DATA_OVERRUN)) {
234 DEBUG2(printk("scsi%ld:%d:%d:%llu: %s: " "Data overrun\n",
235 ha->host_no,
236 cmd->device->channel, cmd->device->id,
237 cmd->device->lun, __func__));
238
239 cmd->result = DID_ERROR << 16;
240 break;
241 }
242
243 scsi_set_resid(cmd, residual);
244
245 if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_UNDER) {
246
247 /* Both the firmware and target reported UNDERRUN:
248 *
249 * MID-LAYER UNDERFLOW case:
250 * Some kernels do not properly detect midlayer
251 * underflow, so we manually check it and return
252 * ERROR if the minimum required data was not
253 * received.
254 *
255 * ALL OTHER cases:
256 * Fall thru to check scsi_status
257 */
258 if (!scsi_status && (scsi_bufflen(cmd) - residual) <
259 cmd->underflow) {
260 DEBUG2(ql4_printk(KERN_INFO, ha,
261 "scsi%ld:%d:%d:%llu: %s: Mid-layer Data underrun, xferlen = 0x%x,residual = 0x%x\n",
262 ha->host_no,
263 cmd->device->channel,
264 cmd->device->id,
265 cmd->device->lun, __func__,
266 scsi_bufflen(cmd),
267 residual));
268
269 cmd->result = DID_ERROR << 16;
270 break;
271 }
272
273 } else if (scsi_status != SAM_STAT_TASK_SET_FULL &&
274 scsi_status != SAM_STAT_BUSY) {
275
276 /*
277 * The firmware reports UNDERRUN, but the target does
278 * not report it:
279 *
280 * scsi_status | host_byte device_byte
281 * | (19:16) (7:0)
282 * ============= | ========= ===========
283 * TASK_SET_FULL | DID_OK scsi_status
284 * BUSY | DID_OK scsi_status
285 * ALL OTHERS | DID_ERROR scsi_status
286 *
287 * Note: If scsi_status is task set full or busy,
288 * then this else if would fall thru to check the
289 * scsi_status and return DID_OK.
290 */
291
292 DEBUG2(ql4_printk(KERN_INFO, ha,
293 "scsi%ld:%d:%d:%llu: %s: Dropped frame(s) detected (0x%x of 0x%x bytes).\n",
294 ha->host_no,
295 cmd->device->channel,
296 cmd->device->id,
297 cmd->device->lun, __func__,
298 residual,
299 scsi_bufflen(cmd)));
300
301 cmd->result = DID_ERROR << 16 | scsi_status;
302 goto check_scsi_status;
303 }
304
305 cmd->result = DID_OK << 16 | scsi_status;
306
307 check_scsi_status:
308 if (scsi_status == SAM_STAT_CHECK_CONDITION)
309 qla4xxx_copy_sense(ha, sts_entry, srb);
310
311 break;
312
313 case SCS_DEVICE_LOGGED_OUT:
314 case SCS_DEVICE_UNAVAILABLE:
315 DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%llu: SCS_DEVICE "
316 "state: 0x%x\n", ha->host_no,
317 cmd->device->channel, cmd->device->id,
318 cmd->device->lun, sts_entry->completionStatus));
319 /*
320 * Mark device missing so that we won't continue to
321 * send I/O to this device. We should get a ddb
322 * state change AEN soon.
323 */
324 if (iscsi_is_session_online(ddb_entry->sess))
325 qla4xxx_mark_device_missing(ddb_entry->sess);
326
327 cmd->result = DID_TRANSPORT_DISRUPTED << 16;
328 break;
329
330 case SCS_QUEUE_FULL:
331 /*
332 * SCSI Mid-Layer handles device queue full
333 */
334 cmd->result = DID_OK << 16 | sts_entry->scsiStatus;
335 DEBUG2(printk("scsi%ld:%d:%llu: %s: QUEUE FULL detected "
336 "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x,"
337 " iResp=%02x\n", ha->host_no, cmd->device->id,
338 cmd->device->lun, __func__,
339 sts_entry->completionStatus,
340 sts_entry->scsiStatus, sts_entry->state_flags,
341 sts_entry->iscsiFlags,
342 sts_entry->iscsiResponse));
343 break;
344
345 default:
346 cmd->result = DID_ERROR << 16;
347 break;
348 }
349
350 status_entry_exit:
351
352 /* complete the request, if not waiting for status_continuation pkt */
353 srb->cc_stat = sts_entry->completionStatus;
354 if (ha->status_srb == NULL)
355 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
356 }
357
358 /**
359 * qla4xxx_passthru_status_entry - processes passthru status IOCBs (0x3C)
360 * @ha: Pointer to host adapter structure.
361 * @sts_entry: Pointer to status entry structure.
362 **/
qla4xxx_passthru_status_entry(struct scsi_qla_host * ha,struct passthru_status * sts_entry)363 static void qla4xxx_passthru_status_entry(struct scsi_qla_host *ha,
364 struct passthru_status *sts_entry)
365 {
366 struct iscsi_task *task;
367 struct ddb_entry *ddb_entry;
368 struct ql4_task_data *task_data;
369 struct iscsi_cls_conn *cls_conn;
370 struct iscsi_conn *conn;
371 itt_t itt;
372 uint32_t fw_ddb_index;
373
374 itt = sts_entry->handle;
375 fw_ddb_index = le32_to_cpu(sts_entry->target);
376
377 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
378
379 if (ddb_entry == NULL) {
380 ql4_printk(KERN_ERR, ha, "%s: Invalid target index = 0x%x\n",
381 __func__, sts_entry->target);
382 return;
383 }
384
385 cls_conn = ddb_entry->conn;
386 conn = cls_conn->dd_data;
387 spin_lock(&conn->session->back_lock);
388 task = iscsi_itt_to_task(conn, itt);
389 spin_unlock(&conn->session->back_lock);
390
391 if (task == NULL) {
392 ql4_printk(KERN_ERR, ha, "%s: Task is NULL\n", __func__);
393 return;
394 }
395
396 task_data = task->dd_data;
397 memcpy(&task_data->sts, sts_entry, sizeof(struct passthru_status));
398 ha->iocb_cnt -= task_data->iocb_req_cnt;
399 queue_work(ha->task_wq, &task_data->task_work);
400 }
401
qla4xxx_del_mrb_from_active_array(struct scsi_qla_host * ha,uint32_t index)402 static struct mrb *qla4xxx_del_mrb_from_active_array(struct scsi_qla_host *ha,
403 uint32_t index)
404 {
405 struct mrb *mrb = NULL;
406
407 /* validate handle and remove from active array */
408 if (index >= MAX_MRB)
409 return mrb;
410
411 mrb = ha->active_mrb_array[index];
412 ha->active_mrb_array[index] = NULL;
413 if (!mrb)
414 return mrb;
415
416 /* update counters */
417 ha->iocb_cnt -= mrb->iocb_cnt;
418
419 return mrb;
420 }
421
qla4xxx_mbox_status_entry(struct scsi_qla_host * ha,struct mbox_status_iocb * mbox_sts_entry)422 static void qla4xxx_mbox_status_entry(struct scsi_qla_host *ha,
423 struct mbox_status_iocb *mbox_sts_entry)
424 {
425 struct mrb *mrb;
426 uint32_t status;
427 uint32_t data_size;
428
429 mrb = qla4xxx_del_mrb_from_active_array(ha,
430 le32_to_cpu(mbox_sts_entry->handle));
431
432 if (mrb == NULL) {
433 ql4_printk(KERN_WARNING, ha, "%s: mrb[%d] is null\n", __func__,
434 mbox_sts_entry->handle);
435 return;
436 }
437
438 switch (mrb->mbox_cmd) {
439 case MBOX_CMD_PING:
440 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: mbox_cmd = 0x%x, "
441 "mbox_sts[0] = 0x%x, mbox_sts[6] = 0x%x\n",
442 __func__, mrb->mbox_cmd,
443 mbox_sts_entry->out_mbox[0],
444 mbox_sts_entry->out_mbox[6]));
445
446 if (mbox_sts_entry->out_mbox[0] == MBOX_STS_COMMAND_COMPLETE)
447 status = ISCSI_PING_SUCCESS;
448 else
449 status = mbox_sts_entry->out_mbox[6];
450
451 data_size = sizeof(mbox_sts_entry->out_mbox);
452
453 qla4xxx_post_ping_evt_work(ha, status, mrb->pid, data_size,
454 (uint8_t *) mbox_sts_entry->out_mbox);
455 break;
456
457 default:
458 DEBUG2(ql4_printk(KERN_WARNING, ha, "%s: invalid mbox_cmd = "
459 "0x%x\n", __func__, mrb->mbox_cmd));
460 }
461
462 kfree(mrb);
463 return;
464 }
465
466 /**
467 * qla4xxx_process_response_queue - process response queue completions
468 * @ha: Pointer to host adapter structure.
469 *
470 * This routine process response queue completions in interrupt context.
471 * Hardware_lock locked upon entry
472 **/
qla4xxx_process_response_queue(struct scsi_qla_host * ha)473 void qla4xxx_process_response_queue(struct scsi_qla_host *ha)
474 {
475 struct srb *srb = NULL;
476 struct status_entry *sts_entry;
477
478 /* Process all responses from response queue */
479 while ((ha->response_ptr->signature != RESPONSE_PROCESSED)) {
480 sts_entry = (struct status_entry *) ha->response_ptr;
481
482 /* Advance pointers for next entry */
483 if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) {
484 ha->response_out = 0;
485 ha->response_ptr = ha->response_ring;
486 } else {
487 ha->response_out++;
488 ha->response_ptr++;
489 }
490
491 /* process entry */
492 switch (sts_entry->hdr.entryType) {
493 case ET_STATUS:
494 /* Common status */
495 qla4xxx_status_entry(ha, sts_entry);
496 break;
497
498 case ET_PASSTHRU_STATUS:
499 if (sts_entry->hdr.systemDefined == SD_ISCSI_PDU)
500 qla4xxx_passthru_status_entry(ha,
501 (struct passthru_status *)sts_entry);
502 else
503 ql4_printk(KERN_ERR, ha,
504 "%s: Invalid status received\n",
505 __func__);
506
507 break;
508
509 case ET_STATUS_CONTINUATION:
510 qla4xxx_status_cont_entry(ha,
511 (struct status_cont_entry *) sts_entry);
512 break;
513
514 case ET_COMMAND:
515 /* ISP device queue is full. Command not
516 * accepted by ISP. Queue command for
517 * later */
518
519 srb = qla4xxx_del_from_active_array(ha,
520 le32_to_cpu(sts_entry->
521 handle));
522 if (srb == NULL)
523 goto exit_prq_invalid_handle;
524
525 DEBUG2(printk("scsi%ld: %s: FW device queue full, "
526 "srb %p\n", ha->host_no, __func__, srb));
527
528 /* ETRY normally by sending it back with
529 * DID_BUS_BUSY */
530 srb->cmd->result = DID_BUS_BUSY << 16;
531 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
532 break;
533
534 case ET_CONTINUE:
535 /* Just throw away the continuation entries */
536 DEBUG2(printk("scsi%ld: %s: Continuation entry - "
537 "ignoring\n", ha->host_no, __func__));
538 break;
539
540 case ET_MBOX_STATUS:
541 DEBUG2(ql4_printk(KERN_INFO, ha,
542 "%s: mbox status IOCB\n", __func__));
543 qla4xxx_mbox_status_entry(ha,
544 (struct mbox_status_iocb *)sts_entry);
545 break;
546
547 default:
548 /*
549 * Invalid entry in response queue, reset RISC
550 * firmware.
551 */
552 DEBUG2(printk("scsi%ld: %s: Invalid entry %x in "
553 "response queue \n", ha->host_no,
554 __func__,
555 sts_entry->hdr.entryType));
556 goto exit_prq_error;
557 }
558 ((struct response *)sts_entry)->signature = RESPONSE_PROCESSED;
559 wmb();
560 }
561
562 /*
563 * Tell ISP we're done with response(s). This also clears the interrupt.
564 */
565 ha->isp_ops->complete_iocb(ha);
566
567 return;
568
569 exit_prq_invalid_handle:
570 DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n",
571 ha->host_no, __func__, srb, sts_entry->hdr.entryType,
572 sts_entry->completionStatus));
573
574 exit_prq_error:
575 ha->isp_ops->complete_iocb(ha);
576 set_bit(DPC_RESET_HA, &ha->dpc_flags);
577 }
578
579 /**
580 * qla4_83xx_loopback_in_progress: Is loopback in progress?
581 * @ha: Pointer to host adapter structure.
582 * returns: 1 = loopback in progress, 0 = loopback not in progress
583 **/
qla4_83xx_loopback_in_progress(struct scsi_qla_host * ha)584 static int qla4_83xx_loopback_in_progress(struct scsi_qla_host *ha)
585 {
586 int rval = 1;
587
588 if (is_qla8032(ha) || is_qla8042(ha)) {
589 if ((ha->idc_info.info2 & ENABLE_INTERNAL_LOOPBACK) ||
590 (ha->idc_info.info2 & ENABLE_EXTERNAL_LOOPBACK)) {
591 DEBUG2(ql4_printk(KERN_INFO, ha,
592 "%s: Loopback diagnostics in progress\n",
593 __func__));
594 rval = 1;
595 } else {
596 DEBUG2(ql4_printk(KERN_INFO, ha,
597 "%s: Loopback diagnostics not in progress\n",
598 __func__));
599 rval = 0;
600 }
601 }
602
603 return rval;
604 }
605
qla4xxx_update_ipaddr_state(struct scsi_qla_host * ha,uint32_t ipaddr_idx,uint32_t ipaddr_fw_state)606 static void qla4xxx_update_ipaddr_state(struct scsi_qla_host *ha,
607 uint32_t ipaddr_idx,
608 uint32_t ipaddr_fw_state)
609 {
610 uint8_t ipaddr_state;
611 uint8_t ip_idx;
612
613 ip_idx = ipaddr_idx & 0xF;
614 ipaddr_state = qla4xxx_set_ipaddr_state((uint8_t)ipaddr_fw_state);
615
616 switch (ip_idx) {
617 case 0:
618 ha->ip_config.ipv4_addr_state = ipaddr_state;
619 break;
620 case 1:
621 ha->ip_config.ipv6_link_local_state = ipaddr_state;
622 break;
623 case 2:
624 ha->ip_config.ipv6_addr0_state = ipaddr_state;
625 break;
626 case 3:
627 ha->ip_config.ipv6_addr1_state = ipaddr_state;
628 break;
629 default:
630 ql4_printk(KERN_INFO, ha, "%s: Invalid IPADDR index %d\n",
631 __func__, ip_idx);
632 }
633 }
634
qla4xxx_default_router_changed(struct scsi_qla_host * ha,uint32_t * mbox_sts)635 static void qla4xxx_default_router_changed(struct scsi_qla_host *ha,
636 uint32_t *mbox_sts)
637 {
638 memcpy(&ha->ip_config.ipv6_default_router_addr.s6_addr32[0],
639 &mbox_sts[2], sizeof(uint32_t));
640 memcpy(&ha->ip_config.ipv6_default_router_addr.s6_addr32[1],
641 &mbox_sts[3], sizeof(uint32_t));
642 memcpy(&ha->ip_config.ipv6_default_router_addr.s6_addr32[2],
643 &mbox_sts[4], sizeof(uint32_t));
644 memcpy(&ha->ip_config.ipv6_default_router_addr.s6_addr32[3],
645 &mbox_sts[5], sizeof(uint32_t));
646 }
647
648 /**
649 * qla4xxx_isr_decode_mailbox - decodes mailbox status
650 * @ha: Pointer to host adapter structure.
651 * @mbox_status: Mailbox status.
652 *
653 * This routine decodes the mailbox status during the ISR.
654 * Hardware_lock locked upon entry. runs in interrupt context.
655 **/
qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,uint32_t mbox_status)656 static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha,
657 uint32_t mbox_status)
658 {
659 int i;
660 uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
661 __le32 __iomem *mailbox_out;
662 uint32_t opcode = 0;
663
664 if (is_qla8032(ha) || is_qla8042(ha))
665 mailbox_out = &ha->qla4_83xx_reg->mailbox_out[0];
666 else if (is_qla8022(ha))
667 mailbox_out = &ha->qla4_82xx_reg->mailbox_out[0];
668 else
669 mailbox_out = &ha->reg->mailbox[0];
670
671 if ((mbox_status == MBOX_STS_BUSY) ||
672 (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) ||
673 (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) {
674 ha->mbox_status[0] = mbox_status;
675
676 if (test_bit(AF_MBOX_COMMAND, &ha->flags)) {
677 /*
678 * Copy all mailbox registers to a temporary
679 * location and set mailbox command done flag
680 */
681 for (i = 0; i < ha->mbox_status_count; i++)
682 ha->mbox_status[i] = readl(&mailbox_out[i]);
683
684 set_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
685
686 if (test_bit(AF_MBOX_COMMAND_NOPOLL, &ha->flags))
687 complete(&ha->mbx_intr_comp);
688 }
689 } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) {
690 for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
691 mbox_sts[i] = readl(&mailbox_out[i]);
692
693 /* Immediately process the AENs that don't require much work.
694 * Only queue the database_changed AENs */
695 if (ha->aen_log.count < MAX_AEN_ENTRIES) {
696 for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
697 ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] =
698 mbox_sts[i];
699 ha->aen_log.count++;
700 }
701 switch (mbox_status) {
702 case MBOX_ASTS_SYSTEM_ERROR:
703 /* Log Mailbox registers */
704 ql4_printk(KERN_INFO, ha, "%s: System Err\n", __func__);
705 qla4xxx_dump_registers(ha);
706
707 if ((is_qla8022(ha) && ql4xdontresethba) ||
708 ((is_qla8032(ha) || is_qla8042(ha)) &&
709 qla4_83xx_idc_dontreset(ha))) {
710 DEBUG2(printk("scsi%ld: %s:Don't Reset HBA\n",
711 ha->host_no, __func__));
712 } else {
713 set_bit(AF_GET_CRASH_RECORD, &ha->flags);
714 set_bit(DPC_RESET_HA, &ha->dpc_flags);
715 }
716 break;
717
718 case MBOX_ASTS_REQUEST_TRANSFER_ERROR:
719 case MBOX_ASTS_RESPONSE_TRANSFER_ERROR:
720 case MBOX_ASTS_NVRAM_INVALID:
721 case MBOX_ASTS_IP_ADDRESS_CHANGED:
722 case MBOX_ASTS_DHCP_LEASE_EXPIRED:
723 DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, "
724 "Reset HA\n", ha->host_no, mbox_status));
725 if (is_qla80XX(ha))
726 set_bit(DPC_RESET_HA_FW_CONTEXT,
727 &ha->dpc_flags);
728 else
729 set_bit(DPC_RESET_HA, &ha->dpc_flags);
730 break;
731
732 case MBOX_ASTS_LINK_UP:
733 set_bit(AF_LINK_UP, &ha->flags);
734 if (test_bit(AF_INIT_DONE, &ha->flags))
735 set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
736
737 ql4_printk(KERN_INFO, ha, "%s: LINK UP\n", __func__);
738 qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKUP,
739 sizeof(mbox_sts),
740 (uint8_t *) mbox_sts);
741
742 if ((is_qla8032(ha) || is_qla8042(ha)) &&
743 ha->notify_link_up_comp)
744 complete(&ha->link_up_comp);
745
746 break;
747
748 case MBOX_ASTS_LINK_DOWN:
749 clear_bit(AF_LINK_UP, &ha->flags);
750 if (test_bit(AF_INIT_DONE, &ha->flags)) {
751 set_bit(DPC_LINK_CHANGED, &ha->dpc_flags);
752 qla4xxx_wake_dpc(ha);
753 }
754
755 ql4_printk(KERN_INFO, ha, "%s: LINK DOWN\n", __func__);
756 qla4xxx_post_aen_work(ha, ISCSI_EVENT_LINKDOWN,
757 sizeof(mbox_sts),
758 (uint8_t *) mbox_sts);
759 break;
760
761 case MBOX_ASTS_HEARTBEAT:
762 ha->seconds_since_last_heartbeat = 0;
763 break;
764
765 case MBOX_ASTS_DHCP_LEASE_ACQUIRED:
766 DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE "
767 "ACQUIRED\n", ha->host_no, mbox_status));
768 set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
769 break;
770
771 case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM:
772 case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target
773 * mode
774 * only */
775 case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */
776 case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR:
777 case MBOX_ASTS_SUBNET_STATE_CHANGE:
778 case MBOX_ASTS_DUPLICATE_IP:
779 /* No action */
780 DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no,
781 mbox_status));
782 break;
783
784 case MBOX_ASTS_IP_ADDR_STATE_CHANGED:
785 printk("scsi%ld: AEN %04x, mbox_sts[2]=%04x, "
786 "mbox_sts[3]=%04x\n", ha->host_no, mbox_sts[0],
787 mbox_sts[2], mbox_sts[3]);
788
789 qla4xxx_update_ipaddr_state(ha, mbox_sts[5],
790 mbox_sts[3]);
791 /* mbox_sts[2] = Old ACB state
792 * mbox_sts[3] = new ACB state */
793 if ((mbox_sts[3] == IP_ADDRSTATE_PREFERRED) &&
794 ((mbox_sts[2] == IP_ADDRSTATE_TENTATIVE) ||
795 (mbox_sts[2] == IP_ADDRSTATE_ACQUIRING))) {
796 set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags);
797 } else if ((mbox_sts[3] == IP_ADDRSTATE_ACQUIRING) &&
798 (mbox_sts[2] == IP_ADDRSTATE_PREFERRED)) {
799 if (is_qla80XX(ha))
800 set_bit(DPC_RESET_HA_FW_CONTEXT,
801 &ha->dpc_flags);
802 else
803 set_bit(DPC_RESET_HA, &ha->dpc_flags);
804 } else if (mbox_sts[3] == IP_ADDRSTATE_DISABLING) {
805 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ACB in disabling state\n",
806 ha->host_no, __func__);
807 } else if (mbox_sts[3] == IP_ADDRSTATE_UNCONFIGURED) {
808 complete(&ha->disable_acb_comp);
809 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ACB state unconfigured\n",
810 ha->host_no, __func__);
811 }
812 break;
813
814 case MBOX_ASTS_IPV6_LINK_MTU_CHANGE:
815 case MBOX_ASTS_IPV6_AUTO_PREFIX_IGNORED:
816 case MBOX_ASTS_IPV6_ND_LOCAL_PREFIX_IGNORED:
817 /* No action */
818 DEBUG2(ql4_printk(KERN_INFO, ha, "scsi%ld: AEN %04x\n",
819 ha->host_no, mbox_status));
820 break;
821
822 case MBOX_ASTS_ICMPV6_ERROR_MSG_RCVD:
823 DEBUG2(ql4_printk(KERN_INFO, ha,
824 "scsi%ld: AEN %04x, IPv6 ERROR, "
825 "mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3}=%08x, mbox_sts[4]=%08x mbox_sts[5]=%08x\n",
826 ha->host_no, mbox_sts[0], mbox_sts[1],
827 mbox_sts[2], mbox_sts[3], mbox_sts[4],
828 mbox_sts[5]));
829 break;
830
831 case MBOX_ASTS_MAC_ADDRESS_CHANGED:
832 case MBOX_ASTS_DNS:
833 /* No action */
834 DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, "
835 "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n",
836 ha->host_no, mbox_sts[0],
837 mbox_sts[1], mbox_sts[2]));
838 break;
839
840 case MBOX_ASTS_SELF_TEST_FAILED:
841 case MBOX_ASTS_LOGIN_FAILED:
842 /* No action */
843 DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, "
844 "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n",
845 ha->host_no, mbox_sts[0], mbox_sts[1],
846 mbox_sts[2], mbox_sts[3]));
847 break;
848
849 case MBOX_ASTS_DATABASE_CHANGED:
850 /* Queue AEN information and process it in the DPC
851 * routine */
852 if (ha->aen_q_count > 0) {
853
854 /* decrement available counter */
855 ha->aen_q_count--;
856
857 for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
858 ha->aen_q[ha->aen_in].mbox_sts[i] =
859 mbox_sts[i];
860
861 /* print debug message */
862 DEBUG2(printk("scsi%ld: AEN[%d] %04x queued "
863 "mb1:0x%x mb2:0x%x mb3:0x%x "
864 "mb4:0x%x mb5:0x%x\n",
865 ha->host_no, ha->aen_in,
866 mbox_sts[0], mbox_sts[1],
867 mbox_sts[2], mbox_sts[3],
868 mbox_sts[4], mbox_sts[5]));
869
870 /* advance pointer */
871 ha->aen_in++;
872 if (ha->aen_in == MAX_AEN_ENTRIES)
873 ha->aen_in = 0;
874
875 /* The DPC routine will process the aen */
876 set_bit(DPC_AEN, &ha->dpc_flags);
877 } else {
878 DEBUG2(printk("scsi%ld: %s: aen %04x, queue "
879 "overflowed! AEN LOST!!\n",
880 ha->host_no, __func__,
881 mbox_sts[0]));
882
883 DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n",
884 ha->host_no));
885
886 for (i = 0; i < MAX_AEN_ENTRIES; i++) {
887 DEBUG2(printk("AEN[%d] %04x %04x %04x "
888 "%04x\n", i, mbox_sts[0],
889 mbox_sts[1], mbox_sts[2],
890 mbox_sts[3]));
891 }
892 }
893 break;
894
895 case MBOX_ASTS_TXSCVR_INSERTED:
896 DEBUG2(printk(KERN_WARNING
897 "scsi%ld: AEN %04x Transceiver"
898 " inserted\n", ha->host_no, mbox_sts[0]));
899 break;
900
901 case MBOX_ASTS_TXSCVR_REMOVED:
902 DEBUG2(printk(KERN_WARNING
903 "scsi%ld: AEN %04x Transceiver"
904 " removed\n", ha->host_no, mbox_sts[0]));
905 break;
906
907 case MBOX_ASTS_IDC_REQUEST_NOTIFICATION:
908 if (is_qla8032(ha) || is_qla8042(ha)) {
909 DEBUG2(ql4_printk(KERN_INFO, ha,
910 "scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x\n",
911 ha->host_no, mbox_sts[0],
912 mbox_sts[1], mbox_sts[2],
913 mbox_sts[3], mbox_sts[4]));
914 opcode = mbox_sts[1] >> 16;
915 if ((opcode == MBOX_CMD_SET_PORT_CONFIG) ||
916 (opcode == MBOX_CMD_PORT_RESET)) {
917 set_bit(DPC_POST_IDC_ACK,
918 &ha->dpc_flags);
919 ha->idc_info.request_desc = mbox_sts[1];
920 ha->idc_info.info1 = mbox_sts[2];
921 ha->idc_info.info2 = mbox_sts[3];
922 ha->idc_info.info3 = mbox_sts[4];
923 qla4xxx_wake_dpc(ha);
924 }
925 }
926 break;
927
928 case MBOX_ASTS_IDC_COMPLETE:
929 if (is_qla8032(ha) || is_qla8042(ha)) {
930 DEBUG2(ql4_printk(KERN_INFO, ha,
931 "scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x\n",
932 ha->host_no, mbox_sts[0],
933 mbox_sts[1], mbox_sts[2],
934 mbox_sts[3], mbox_sts[4]));
935 DEBUG2(ql4_printk(KERN_INFO, ha,
936 "scsi:%ld: AEN %04x IDC Complete notification\n",
937 ha->host_no, mbox_sts[0]));
938
939 opcode = mbox_sts[1] >> 16;
940 if (ha->notify_idc_comp)
941 complete(&ha->idc_comp);
942
943 if ((opcode == MBOX_CMD_SET_PORT_CONFIG) ||
944 (opcode == MBOX_CMD_PORT_RESET))
945 ha->idc_info.info2 = mbox_sts[3];
946
947 if (qla4_83xx_loopback_in_progress(ha)) {
948 set_bit(AF_LOOPBACK, &ha->flags);
949 } else {
950 clear_bit(AF_LOOPBACK, &ha->flags);
951 if (ha->saved_acb)
952 set_bit(DPC_RESTORE_ACB,
953 &ha->dpc_flags);
954 }
955 qla4xxx_wake_dpc(ha);
956 }
957 break;
958
959 case MBOX_ASTS_IPV6_DEFAULT_ROUTER_CHANGED:
960 DEBUG2(ql4_printk(KERN_INFO, ha,
961 "scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x mbox_sts[5]=%08x\n",
962 ha->host_no, mbox_sts[0], mbox_sts[1],
963 mbox_sts[2], mbox_sts[3], mbox_sts[4],
964 mbox_sts[5]));
965 DEBUG2(ql4_printk(KERN_INFO, ha,
966 "scsi%ld: AEN %04x Received IPv6 default router changed notification\n",
967 ha->host_no, mbox_sts[0]));
968 qla4xxx_default_router_changed(ha, mbox_sts);
969 break;
970
971 case MBOX_ASTS_IDC_TIME_EXTEND_NOTIFICATION:
972 DEBUG2(ql4_printk(KERN_INFO, ha,
973 "scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x mbox_sts[5]=%08x\n",
974 ha->host_no, mbox_sts[0], mbox_sts[1],
975 mbox_sts[2], mbox_sts[3], mbox_sts[4],
976 mbox_sts[5]));
977 DEBUG2(ql4_printk(KERN_INFO, ha,
978 "scsi%ld: AEN %04x Received IDC Extend Timeout notification\n",
979 ha->host_no, mbox_sts[0]));
980 /* new IDC timeout */
981 ha->idc_extend_tmo = mbox_sts[1];
982 break;
983
984 case MBOX_ASTS_INITIALIZATION_FAILED:
985 DEBUG2(ql4_printk(KERN_INFO, ha,
986 "scsi%ld: AEN %04x, mbox_sts[3]=%08x\n",
987 ha->host_no, mbox_sts[0],
988 mbox_sts[3]));
989 break;
990
991 case MBOX_ASTS_SYSTEM_WARNING_EVENT:
992 DEBUG2(ql4_printk(KERN_WARNING, ha,
993 "scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x mbox_sts[5]=%08x\n",
994 ha->host_no, mbox_sts[0], mbox_sts[1],
995 mbox_sts[2], mbox_sts[3], mbox_sts[4],
996 mbox_sts[5]));
997 break;
998
999 case MBOX_ASTS_DCBX_CONF_CHANGE:
1000 DEBUG2(ql4_printk(KERN_INFO, ha,
1001 "scsi%ld: AEN %04x, mbox_sts[1]=%08x, mbox_sts[2]=%08x, mbox_sts[3]=%08x, mbox_sts[4]=%08x mbox_sts[5]=%08x\n",
1002 ha->host_no, mbox_sts[0], mbox_sts[1],
1003 mbox_sts[2], mbox_sts[3], mbox_sts[4],
1004 mbox_sts[5]));
1005 DEBUG2(ql4_printk(KERN_INFO, ha,
1006 "scsi%ld: AEN %04x Received DCBX configuration changed notification\n",
1007 ha->host_no, mbox_sts[0]));
1008 break;
1009
1010 default:
1011 DEBUG2(printk(KERN_WARNING
1012 "scsi%ld: AEN %04x UNKNOWN\n",
1013 ha->host_no, mbox_sts[0]));
1014 break;
1015 }
1016 } else {
1017 DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n",
1018 ha->host_no, mbox_status));
1019
1020 ha->mbox_status[0] = mbox_status;
1021 }
1022 }
1023
qla4_83xx_interrupt_service_routine(struct scsi_qla_host * ha,uint32_t intr_status)1024 void qla4_83xx_interrupt_service_routine(struct scsi_qla_host *ha,
1025 uint32_t intr_status)
1026 {
1027 /* Process mailbox/asynch event interrupt.*/
1028 if (intr_status) {
1029 qla4xxx_isr_decode_mailbox(ha,
1030 readl(&ha->qla4_83xx_reg->mailbox_out[0]));
1031 /* clear the interrupt */
1032 writel(0, &ha->qla4_83xx_reg->risc_intr);
1033 } else {
1034 qla4xxx_process_response_queue(ha);
1035 }
1036
1037 /* clear the interrupt */
1038 writel(0, &ha->qla4_83xx_reg->mb_int_mask);
1039 }
1040
1041 /**
1042 * qla4_82xx_interrupt_service_routine - isr
1043 * @ha: pointer to host adapter structure.
1044 * @intr_status: Local interrupt status/type.
1045 *
1046 * This is the main interrupt service routine.
1047 * hardware_lock locked upon entry. runs in interrupt context.
1048 **/
qla4_82xx_interrupt_service_routine(struct scsi_qla_host * ha,uint32_t intr_status)1049 void qla4_82xx_interrupt_service_routine(struct scsi_qla_host *ha,
1050 uint32_t intr_status)
1051 {
1052 /* Process response queue interrupt. */
1053 if ((intr_status & HSRX_RISC_IOCB_INT) &&
1054 test_bit(AF_INIT_DONE, &ha->flags))
1055 qla4xxx_process_response_queue(ha);
1056
1057 /* Process mailbox/asynch event interrupt.*/
1058 if (intr_status & HSRX_RISC_MB_INT)
1059 qla4xxx_isr_decode_mailbox(ha,
1060 readl(&ha->qla4_82xx_reg->mailbox_out[0]));
1061
1062 /* clear the interrupt */
1063 writel(0, &ha->qla4_82xx_reg->host_int);
1064 readl(&ha->qla4_82xx_reg->host_int);
1065 }
1066
1067 /**
1068 * qla4xxx_interrupt_service_routine - isr
1069 * @ha: pointer to host adapter structure.
1070 * @intr_status: Local interrupt status/type.
1071 *
1072 * This is the main interrupt service routine.
1073 * hardware_lock locked upon entry. runs in interrupt context.
1074 **/
qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,uint32_t intr_status)1075 void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha,
1076 uint32_t intr_status)
1077 {
1078 /* Process response queue interrupt. */
1079 if (intr_status & CSR_SCSI_COMPLETION_INTR)
1080 qla4xxx_process_response_queue(ha);
1081
1082 /* Process mailbox/asynch event interrupt.*/
1083 if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
1084 qla4xxx_isr_decode_mailbox(ha,
1085 readl(&ha->reg->mailbox[0]));
1086
1087 /* Clear Mailbox Interrupt */
1088 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1089 &ha->reg->ctrl_status);
1090 readl(&ha->reg->ctrl_status);
1091 }
1092 }
1093
1094 /**
1095 * qla4_82xx_spurious_interrupt - processes spurious interrupt
1096 * @ha: pointer to host adapter structure.
1097 * @reqs_count: .
1098 *
1099 **/
qla4_82xx_spurious_interrupt(struct scsi_qla_host * ha,uint8_t reqs_count)1100 static void qla4_82xx_spurious_interrupt(struct scsi_qla_host *ha,
1101 uint8_t reqs_count)
1102 {
1103 if (reqs_count)
1104 return;
1105
1106 DEBUG2(ql4_printk(KERN_INFO, ha, "Spurious Interrupt\n"));
1107 if (is_qla8022(ha)) {
1108 writel(0, &ha->qla4_82xx_reg->host_int);
1109 if (!ha->pdev->msi_enabled && !ha->pdev->msix_enabled)
1110 qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg,
1111 0xfbff);
1112 }
1113 ha->spurious_int_count++;
1114 }
1115
1116 /**
1117 * qla4xxx_intr_handler - hardware interrupt handler.
1118 * @irq: Unused
1119 * @dev_id: Pointer to host adapter structure
1120 **/
qla4xxx_intr_handler(int irq,void * dev_id)1121 irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id)
1122 {
1123 struct scsi_qla_host *ha;
1124 uint32_t intr_status;
1125 unsigned long flags = 0;
1126 uint8_t reqs_count = 0;
1127
1128 ha = (struct scsi_qla_host *) dev_id;
1129 if (!ha) {
1130 DEBUG2(printk(KERN_INFO
1131 "qla4xxx: Interrupt with NULL host ptr\n"));
1132 return IRQ_NONE;
1133 }
1134
1135 spin_lock_irqsave(&ha->hardware_lock, flags);
1136
1137 ha->isr_count++;
1138 /*
1139 * Repeatedly service interrupts up to a maximum of
1140 * MAX_REQS_SERVICED_PER_INTR
1141 */
1142 while (1) {
1143 /*
1144 * Read interrupt status
1145 */
1146 if (ha->isp_ops->rd_shdw_rsp_q_in(ha) !=
1147 ha->response_out)
1148 intr_status = CSR_SCSI_COMPLETION_INTR;
1149 else
1150 intr_status = readl(&ha->reg->ctrl_status);
1151
1152 if ((intr_status &
1153 (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == 0) {
1154 if (reqs_count == 0)
1155 ha->spurious_int_count++;
1156 break;
1157 }
1158
1159 if (intr_status & CSR_FATAL_ERROR) {
1160 DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, "
1161 "Status 0x%04x\n", ha->host_no,
1162 readl(isp_port_error_status (ha))));
1163
1164 /* Issue Soft Reset to clear this error condition.
1165 * This will prevent the RISC from repeatedly
1166 * interrupting the driver; thus, allowing the DPC to
1167 * get scheduled to continue error recovery.
1168 * NOTE: Disabling RISC interrupts does not work in
1169 * this case, as CSR_FATAL_ERROR overrides
1170 * CSR_SCSI_INTR_ENABLE */
1171 if ((readl(&ha->reg->ctrl_status) &
1172 CSR_SCSI_RESET_INTR) == 0) {
1173 writel(set_rmask(CSR_SOFT_RESET),
1174 &ha->reg->ctrl_status);
1175 readl(&ha->reg->ctrl_status);
1176 }
1177
1178 writel(set_rmask(CSR_FATAL_ERROR),
1179 &ha->reg->ctrl_status);
1180 readl(&ha->reg->ctrl_status);
1181
1182 __qla4xxx_disable_intrs(ha);
1183
1184 set_bit(DPC_RESET_HA, &ha->dpc_flags);
1185
1186 break;
1187 } else if (intr_status & CSR_SCSI_RESET_INTR) {
1188 clear_bit(AF_ONLINE, &ha->flags);
1189 __qla4xxx_disable_intrs(ha);
1190
1191 writel(set_rmask(CSR_SCSI_RESET_INTR),
1192 &ha->reg->ctrl_status);
1193 readl(&ha->reg->ctrl_status);
1194
1195 if (!test_bit(AF_HA_REMOVAL, &ha->flags))
1196 set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
1197
1198 break;
1199 } else if (intr_status & INTR_PENDING) {
1200 ha->isp_ops->interrupt_service_routine(ha, intr_status);
1201 ha->total_io_count++;
1202 if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
1203 break;
1204 }
1205 }
1206
1207 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1208
1209 return IRQ_HANDLED;
1210 }
1211
1212 /**
1213 * qla4_82xx_intr_handler - hardware interrupt handler.
1214 * @irq: Unused
1215 * @dev_id: Pointer to host adapter structure
1216 **/
qla4_82xx_intr_handler(int irq,void * dev_id)1217 irqreturn_t qla4_82xx_intr_handler(int irq, void *dev_id)
1218 {
1219 struct scsi_qla_host *ha = dev_id;
1220 uint32_t intr_status;
1221 uint32_t status;
1222 unsigned long flags = 0;
1223 uint8_t reqs_count = 0;
1224
1225 if (unlikely(pci_channel_offline(ha->pdev)))
1226 return IRQ_HANDLED;
1227
1228 ha->isr_count++;
1229 status = qla4_82xx_rd_32(ha, ISR_INT_VECTOR);
1230 if (!(status & ha->nx_legacy_intr.int_vec_bit))
1231 return IRQ_NONE;
1232
1233 status = qla4_82xx_rd_32(ha, ISR_INT_STATE_REG);
1234 if (!ISR_IS_LEGACY_INTR_TRIGGERED(status)) {
1235 DEBUG7(ql4_printk(KERN_INFO, ha,
1236 "%s legacy Int not triggered\n", __func__));
1237 return IRQ_NONE;
1238 }
1239
1240 /* clear the interrupt */
1241 qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff);
1242
1243 /* read twice to ensure write is flushed */
1244 qla4_82xx_rd_32(ha, ISR_INT_VECTOR);
1245 qla4_82xx_rd_32(ha, ISR_INT_VECTOR);
1246
1247 spin_lock_irqsave(&ha->hardware_lock, flags);
1248 while (1) {
1249 if (!(readl(&ha->qla4_82xx_reg->host_int) &
1250 ISRX_82XX_RISC_INT)) {
1251 qla4_82xx_spurious_interrupt(ha, reqs_count);
1252 break;
1253 }
1254 intr_status = readl(&ha->qla4_82xx_reg->host_status);
1255 if ((intr_status &
1256 (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) {
1257 qla4_82xx_spurious_interrupt(ha, reqs_count);
1258 break;
1259 }
1260
1261 ha->isp_ops->interrupt_service_routine(ha, intr_status);
1262
1263 /* Enable Interrupt */
1264 qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_mask_reg, 0xfbff);
1265
1266 if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
1267 break;
1268 }
1269
1270 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1271 return IRQ_HANDLED;
1272 }
1273
1274 #define LEG_INT_PTR_B31 (1 << 31)
1275 #define LEG_INT_PTR_B30 (1 << 30)
1276 #define PF_BITS_MASK (0xF << 16)
1277
1278 /**
1279 * qla4_83xx_intr_handler - hardware interrupt handler.
1280 * @irq: Unused
1281 * @dev_id: Pointer to host adapter structure
1282 **/
qla4_83xx_intr_handler(int irq,void * dev_id)1283 irqreturn_t qla4_83xx_intr_handler(int irq, void *dev_id)
1284 {
1285 struct scsi_qla_host *ha = dev_id;
1286 uint32_t leg_int_ptr = 0;
1287 unsigned long flags = 0;
1288
1289 ha->isr_count++;
1290 leg_int_ptr = readl(&ha->qla4_83xx_reg->leg_int_ptr);
1291
1292 /* Legacy interrupt is valid if bit31 of leg_int_ptr is set */
1293 if (!(leg_int_ptr & LEG_INT_PTR_B31)) {
1294 DEBUG7(ql4_printk(KERN_ERR, ha,
1295 "%s: Legacy Interrupt Bit 31 not set, spurious interrupt!\n",
1296 __func__));
1297 return IRQ_NONE;
1298 }
1299
1300 /* Validate the PCIE function ID set in leg_int_ptr bits [19..16] */
1301 if ((leg_int_ptr & PF_BITS_MASK) != ha->pf_bit) {
1302 DEBUG7(ql4_printk(KERN_ERR, ha,
1303 "%s: Incorrect function ID 0x%x in legacy interrupt register, ha->pf_bit = 0x%x\n",
1304 __func__, (leg_int_ptr & PF_BITS_MASK),
1305 ha->pf_bit));
1306 return IRQ_NONE;
1307 }
1308
1309 /* To de-assert legacy interrupt, write 0 to Legacy Interrupt Trigger
1310 * Control register and poll till Legacy Interrupt Pointer register
1311 * bit30 is 0.
1312 */
1313 writel(0, &ha->qla4_83xx_reg->leg_int_trig);
1314 do {
1315 leg_int_ptr = readl(&ha->qla4_83xx_reg->leg_int_ptr);
1316 if ((leg_int_ptr & PF_BITS_MASK) != ha->pf_bit)
1317 break;
1318 } while (leg_int_ptr & LEG_INT_PTR_B30);
1319
1320 spin_lock_irqsave(&ha->hardware_lock, flags);
1321 leg_int_ptr = readl(&ha->qla4_83xx_reg->risc_intr);
1322 ha->isp_ops->interrupt_service_routine(ha, leg_int_ptr);
1323 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1324
1325 return IRQ_HANDLED;
1326 }
1327
1328 irqreturn_t
qla4_8xxx_msi_handler(int irq,void * dev_id)1329 qla4_8xxx_msi_handler(int irq, void *dev_id)
1330 {
1331 struct scsi_qla_host *ha;
1332
1333 ha = (struct scsi_qla_host *) dev_id;
1334 if (!ha) {
1335 DEBUG2(printk(KERN_INFO
1336 "qla4xxx: MSIX: Interrupt with NULL host ptr\n"));
1337 return IRQ_NONE;
1338 }
1339
1340 ha->isr_count++;
1341 /* clear the interrupt */
1342 qla4_82xx_wr_32(ha, ha->nx_legacy_intr.tgt_status_reg, 0xffffffff);
1343
1344 /* read twice to ensure write is flushed */
1345 qla4_82xx_rd_32(ha, ISR_INT_VECTOR);
1346 qla4_82xx_rd_32(ha, ISR_INT_VECTOR);
1347
1348 return qla4_8xxx_default_intr_handler(irq, dev_id);
1349 }
1350
qla4_83xx_mailbox_intr_handler(int irq,void * dev_id)1351 static irqreturn_t qla4_83xx_mailbox_intr_handler(int irq, void *dev_id)
1352 {
1353 struct scsi_qla_host *ha = dev_id;
1354 unsigned long flags;
1355 uint32_t ival = 0;
1356
1357 spin_lock_irqsave(&ha->hardware_lock, flags);
1358
1359 ival = readl(&ha->qla4_83xx_reg->risc_intr);
1360 if (ival == 0) {
1361 ql4_printk(KERN_INFO, ha,
1362 "%s: It is a spurious mailbox interrupt!\n",
1363 __func__);
1364 ival = readl(&ha->qla4_83xx_reg->mb_int_mask);
1365 ival &= ~INT_MASK_FW_MB;
1366 writel(ival, &ha->qla4_83xx_reg->mb_int_mask);
1367 goto exit;
1368 }
1369
1370 qla4xxx_isr_decode_mailbox(ha,
1371 readl(&ha->qla4_83xx_reg->mailbox_out[0]));
1372 writel(0, &ha->qla4_83xx_reg->risc_intr);
1373 ival = readl(&ha->qla4_83xx_reg->mb_int_mask);
1374 ival &= ~INT_MASK_FW_MB;
1375 writel(ival, &ha->qla4_83xx_reg->mb_int_mask);
1376 ha->isr_count++;
1377 exit:
1378 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1379 return IRQ_HANDLED;
1380 }
1381
1382 /**
1383 * qla4_8xxx_default_intr_handler - hardware interrupt handler.
1384 * @irq: Unused
1385 * @dev_id: Pointer to host adapter structure
1386 *
1387 * This interrupt handler is called directly for MSI-X, and
1388 * called indirectly for MSI.
1389 **/
1390 irqreturn_t
qla4_8xxx_default_intr_handler(int irq,void * dev_id)1391 qla4_8xxx_default_intr_handler(int irq, void *dev_id)
1392 {
1393 struct scsi_qla_host *ha = dev_id;
1394 unsigned long flags;
1395 uint32_t intr_status;
1396 uint8_t reqs_count = 0;
1397
1398 if (is_qla8032(ha) || is_qla8042(ha)) {
1399 qla4_83xx_mailbox_intr_handler(irq, dev_id);
1400 } else {
1401 spin_lock_irqsave(&ha->hardware_lock, flags);
1402 while (1) {
1403 if (!(readl(&ha->qla4_82xx_reg->host_int) &
1404 ISRX_82XX_RISC_INT)) {
1405 qla4_82xx_spurious_interrupt(ha, reqs_count);
1406 break;
1407 }
1408
1409 intr_status = readl(&ha->qla4_82xx_reg->host_status);
1410 if ((intr_status &
1411 (HSRX_RISC_MB_INT | HSRX_RISC_IOCB_INT)) == 0) {
1412 qla4_82xx_spurious_interrupt(ha, reqs_count);
1413 break;
1414 }
1415
1416 ha->isp_ops->interrupt_service_routine(ha, intr_status);
1417
1418 if (++reqs_count == MAX_REQS_SERVICED_PER_INTR)
1419 break;
1420 }
1421 ha->isr_count++;
1422 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1423 }
1424 return IRQ_HANDLED;
1425 }
1426
1427 irqreturn_t
qla4_8xxx_msix_rsp_q(int irq,void * dev_id)1428 qla4_8xxx_msix_rsp_q(int irq, void *dev_id)
1429 {
1430 struct scsi_qla_host *ha = dev_id;
1431 unsigned long flags;
1432 int intr_status;
1433 uint32_t ival = 0;
1434
1435 spin_lock_irqsave(&ha->hardware_lock, flags);
1436 if (is_qla8032(ha) || is_qla8042(ha)) {
1437 ival = readl(&ha->qla4_83xx_reg->iocb_int_mask);
1438 if (ival == 0) {
1439 ql4_printk(KERN_INFO, ha, "%s: It is a spurious iocb interrupt!\n",
1440 __func__);
1441 goto exit_msix_rsp_q;
1442 }
1443 qla4xxx_process_response_queue(ha);
1444 writel(0, &ha->qla4_83xx_reg->iocb_int_mask);
1445 } else {
1446 intr_status = readl(&ha->qla4_82xx_reg->host_status);
1447 if (intr_status & HSRX_RISC_IOCB_INT) {
1448 qla4xxx_process_response_queue(ha);
1449 writel(0, &ha->qla4_82xx_reg->host_int);
1450 } else {
1451 ql4_printk(KERN_INFO, ha, "%s: spurious iocb interrupt...\n",
1452 __func__);
1453 goto exit_msix_rsp_q;
1454 }
1455 }
1456 ha->isr_count++;
1457 exit_msix_rsp_q:
1458 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1459 return IRQ_HANDLED;
1460 }
1461
1462 /**
1463 * qla4xxx_process_aen - processes AENs generated by firmware
1464 * @ha: pointer to host adapter structure.
1465 * @process_aen: type of AENs to process
1466 *
1467 * Processes specific types of Asynchronous Events generated by firmware.
1468 * The type of AENs to process is specified by process_aen and can be
1469 * PROCESS_ALL_AENS 0
1470 * FLUSH_DDB_CHANGED_AENS 1
1471 * RELOGIN_DDB_CHANGED_AENS 2
1472 **/
qla4xxx_process_aen(struct scsi_qla_host * ha,uint8_t process_aen)1473 void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen)
1474 {
1475 uint32_t mbox_sts[MBOX_AEN_REG_COUNT];
1476 struct aen *aen;
1477 int i;
1478 unsigned long flags;
1479
1480 spin_lock_irqsave(&ha->hardware_lock, flags);
1481 while (ha->aen_out != ha->aen_in) {
1482 aen = &ha->aen_q[ha->aen_out];
1483 /* copy aen information to local structure */
1484 for (i = 0; i < MBOX_AEN_REG_COUNT; i++)
1485 mbox_sts[i] = aen->mbox_sts[i];
1486
1487 ha->aen_q_count++;
1488 ha->aen_out++;
1489
1490 if (ha->aen_out == MAX_AEN_ENTRIES)
1491 ha->aen_out = 0;
1492
1493 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1494
1495 DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x"
1496 " mbx3=0x%08x mbx4=0x%08x\n", ha->host_no,
1497 (ha->aen_out ? (ha->aen_out-1): (MAX_AEN_ENTRIES-1)),
1498 mbox_sts[0], mbox_sts[1], mbox_sts[2],
1499 mbox_sts[3], mbox_sts[4]));
1500
1501 switch (mbox_sts[0]) {
1502 case MBOX_ASTS_DATABASE_CHANGED:
1503 switch (process_aen) {
1504 case FLUSH_DDB_CHANGED_AENS:
1505 DEBUG2(printk("scsi%ld: AEN[%d] %04x, index "
1506 "[%d] state=%04x FLUSHED!\n",
1507 ha->host_no, ha->aen_out,
1508 mbox_sts[0], mbox_sts[2],
1509 mbox_sts[3]));
1510 break;
1511 case PROCESS_ALL_AENS:
1512 default:
1513 /* Specific device. */
1514 if (mbox_sts[1] == 1)
1515 qla4xxx_process_ddb_changed(ha,
1516 mbox_sts[2], mbox_sts[3],
1517 mbox_sts[4]);
1518 break;
1519 }
1520 }
1521 spin_lock_irqsave(&ha->hardware_lock, flags);
1522 }
1523 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1524 }
1525
qla4xxx_request_irqs(struct scsi_qla_host * ha)1526 int qla4xxx_request_irqs(struct scsi_qla_host *ha)
1527 {
1528 int ret = 0;
1529 int rval = QLA_ERROR;
1530
1531 if (is_qla40XX(ha))
1532 goto try_intx;
1533
1534 if (ql4xenablemsix == 2) {
1535 /* Note: MSI Interrupts not supported for ISP8324 and ISP8042 */
1536 if (is_qla8032(ha) || is_qla8042(ha)) {
1537 ql4_printk(KERN_INFO, ha, "%s: MSI Interrupts not supported for ISP%04x, Falling back-to INTx mode\n",
1538 __func__, ha->pdev->device);
1539 goto try_intx;
1540 }
1541 goto try_msi;
1542 }
1543
1544 if (ql4xenablemsix == 0 || ql4xenablemsix != 1)
1545 goto try_intx;
1546
1547 /* Trying MSI-X */
1548 ret = qla4_8xxx_enable_msix(ha);
1549 if (!ret) {
1550 DEBUG2(ql4_printk(KERN_INFO, ha,
1551 "MSI-X: Enabled (0x%X).\n", ha->revision_id));
1552 goto irq_attached;
1553 } else {
1554 if (is_qla8032(ha) || is_qla8042(ha)) {
1555 ql4_printk(KERN_INFO, ha, "%s: ISP%04x: MSI-X: Falling back-to INTx mode. ret = %d\n",
1556 __func__, ha->pdev->device, ret);
1557 goto try_intx;
1558 }
1559 }
1560
1561 ql4_printk(KERN_WARNING, ha,
1562 "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
1563
1564 try_msi:
1565 /* Trying MSI */
1566 ret = pci_alloc_irq_vectors(ha->pdev, 1, 1, PCI_IRQ_MSI);
1567 if (ret > 0) {
1568 ret = request_irq(ha->pdev->irq, qla4_8xxx_msi_handler,
1569 0, DRIVER_NAME, ha);
1570 if (!ret) {
1571 DEBUG2(ql4_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
1572 goto irq_attached;
1573 } else {
1574 ql4_printk(KERN_WARNING, ha,
1575 "MSI: Failed to reserve interrupt %d "
1576 "already in use.\n", ha->pdev->irq);
1577 pci_free_irq_vectors(ha->pdev);
1578 }
1579 }
1580
1581 try_intx:
1582 if (is_qla8022(ha)) {
1583 ql4_printk(KERN_WARNING, ha, "%s: ISP82xx Legacy interrupt not supported\n",
1584 __func__);
1585 goto irq_not_attached;
1586 }
1587
1588 /* Trying INTx */
1589 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1590 IRQF_SHARED, DRIVER_NAME, ha);
1591 if (!ret) {
1592 DEBUG2(ql4_printk(KERN_INFO, ha, "INTx: Enabled.\n"));
1593 goto irq_attached;
1594
1595 } else {
1596 ql4_printk(KERN_WARNING, ha,
1597 "INTx: Failed to reserve interrupt %d already in"
1598 " use.\n", ha->pdev->irq);
1599 goto irq_not_attached;
1600 }
1601
1602 irq_attached:
1603 set_bit(AF_IRQ_ATTACHED, &ha->flags);
1604 ha->host->irq = ha->pdev->irq;
1605 ql4_printk(KERN_INFO, ha, "%s: irq %d attached\n",
1606 __func__, ha->pdev->irq);
1607 rval = QLA_SUCCESS;
1608 irq_not_attached:
1609 return rval;
1610 }
1611
qla4xxx_free_irqs(struct scsi_qla_host * ha)1612 void qla4xxx_free_irqs(struct scsi_qla_host *ha)
1613 {
1614 if (!test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
1615 return;
1616
1617 if (ha->pdev->msix_enabled)
1618 free_irq(pci_irq_vector(ha->pdev, 1), ha);
1619 free_irq(pci_irq_vector(ha->pdev, 0), ha);
1620 pci_free_irq_vectors(ha->pdev);
1621 }
1622