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afaf5a2d DS |
1 | /* |
2 | * QLogic iSCSI HBA Driver | |
3 | * Copyright (c) 2003-2006 QLogic Corporation | |
4 | * | |
5 | * See LICENSE.qla4xxx for copyright and licensing details. | |
6 | */ | |
7 | ||
8 | #include "ql4_def.h" | |
401425b1 DS |
9 | #include "ql4_glbl.h" |
10 | #include "ql4_dbg.h" | |
11 | #include "ql4_inline.h" | |
afaf5a2d | 12 | |
94bced3c KH |
13 | /** |
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. | |
18 | **/ | |
19 | static void qla4xxx_copy_sense(struct scsi_qla_host *ha, | |
20 | struct status_entry *sts_entry, | |
21 | struct srb *srb) | |
22 | { | |
23 | struct scsi_cmnd *cmd = srb->cmd; | |
24 | uint16_t sense_len; | |
25 | ||
26 | memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); | |
27 | sense_len = le16_to_cpu(sts_entry->senseDataByteCnt); | |
28 | if (sense_len == 0) | |
29 | return; | |
30 | ||
31 | /* Save total available sense length, | |
32 | * not to exceed cmd's sense buffer size */ | |
33 | sense_len = min_t(uint16_t, sense_len, SCSI_SENSE_BUFFERSIZE); | |
34 | srb->req_sense_ptr = cmd->sense_buffer; | |
35 | srb->req_sense_len = sense_len; | |
36 | ||
37 | /* Copy sense from sts_entry pkt */ | |
38 | sense_len = min_t(uint16_t, sense_len, IOCB_MAX_SENSEDATA_LEN); | |
39 | memcpy(cmd->sense_buffer, sts_entry->senseData, sense_len); | |
40 | ||
41 | DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: %s: sense key = %x, " | |
42 | "ASL= %02x, ASC/ASCQ = %02x/%02x\n", ha->host_no, | |
43 | cmd->device->channel, cmd->device->id, | |
44 | cmd->device->lun, __func__, | |
45 | sts_entry->senseData[2] & 0x0f, | |
46 | sts_entry->senseData[7], | |
47 | sts_entry->senseData[12], | |
48 | sts_entry->senseData[13])); | |
49 | ||
50 | DEBUG5(qla4xxx_dump_buffer(cmd->sense_buffer, sense_len)); | |
51 | srb->flags |= SRB_GOT_SENSE; | |
52 | ||
53 | /* Update srb, in case a sts_cont pkt follows */ | |
54 | srb->req_sense_ptr += sense_len; | |
55 | srb->req_sense_len -= sense_len; | |
56 | if (srb->req_sense_len != 0) | |
57 | ha->status_srb = srb; | |
58 | else | |
59 | ha->status_srb = NULL; | |
60 | } | |
61 | ||
62 | /** | |
63 | * qla4xxx_status_cont_entry - Process a Status Continuations entry. | |
64 | * @ha: SCSI driver HA context | |
65 | * @sts_cont: Entry pointer | |
66 | * | |
67 | * Extended sense data. | |
68 | */ | |
69 | static void | |
70 | qla4xxx_status_cont_entry(struct scsi_qla_host *ha, | |
71 | struct status_cont_entry *sts_cont) | |
72 | { | |
73 | struct srb *srb = ha->status_srb; | |
74 | struct scsi_cmnd *cmd; | |
75 | uint8_t sense_len; | |
76 | ||
77 | if (srb == NULL) | |
78 | return; | |
79 | ||
80 | cmd = srb->cmd; | |
81 | if (cmd == NULL) { | |
82 | DEBUG2(printk(KERN_INFO "scsi%ld: %s: Cmd already returned " | |
83 | "back to OS srb=%p srb->state:%d\n", ha->host_no, | |
84 | __func__, srb, srb->state)); | |
85 | ha->status_srb = NULL; | |
86 | return; | |
87 | } | |
88 | ||
89 | /* Copy sense data. */ | |
90 | sense_len = min_t(uint16_t, srb->req_sense_len, | |
91 | IOCB_MAX_EXT_SENSEDATA_LEN); | |
92 | memcpy(srb->req_sense_ptr, sts_cont->ext_sense_data, sense_len); | |
93 | DEBUG5(qla4xxx_dump_buffer(srb->req_sense_ptr, sense_len)); | |
94 | ||
95 | srb->req_sense_ptr += sense_len; | |
96 | srb->req_sense_len -= sense_len; | |
97 | ||
98 | /* Place command on done queue. */ | |
99 | if (srb->req_sense_len == 0) { | |
100 | qla4xxx_srb_compl(ha, srb); | |
101 | ha->status_srb = NULL; | |
102 | } | |
103 | } | |
104 | ||
afaf5a2d DS |
105 | /** |
106 | * qla4xxx_status_entry - processes status IOCBs | |
107 | * @ha: Pointer to host adapter structure. | |
108 | * @sts_entry: Pointer to status entry structure. | |
109 | **/ | |
110 | static void qla4xxx_status_entry(struct scsi_qla_host *ha, | |
111 | struct status_entry *sts_entry) | |
112 | { | |
113 | uint8_t scsi_status; | |
114 | struct scsi_cmnd *cmd; | |
115 | struct srb *srb; | |
116 | struct ddb_entry *ddb_entry; | |
117 | uint32_t residual; | |
afaf5a2d | 118 | |
afaf5a2d DS |
119 | srb = qla4xxx_del_from_active_array(ha, le32_to_cpu(sts_entry->handle)); |
120 | if (!srb) { | |
121 | /* FIXMEdg: Don't we need to reset ISP in this case??? */ | |
122 | DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Status Entry invalid " | |
123 | "handle 0x%x, sp=%p. This cmd may have already " | |
124 | "been completed.\n", ha->host_no, __func__, | |
125 | le32_to_cpu(sts_entry->handle), srb)); | |
9d562913 DS |
126 | dev_warn(&ha->pdev->dev, "%s invalid status entry:" |
127 | " handle=0x%0x\n", __func__, sts_entry->handle); | |
128 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
afaf5a2d DS |
129 | return; |
130 | } | |
131 | ||
132 | cmd = srb->cmd; | |
133 | if (cmd == NULL) { | |
134 | DEBUG2(printk("scsi%ld: %s: Command already returned back to " | |
135 | "OS pkt->handle=%d srb=%p srb->state:%d\n", | |
136 | ha->host_no, __func__, sts_entry->handle, | |
137 | srb, srb->state)); | |
138 | dev_warn(&ha->pdev->dev, "Command is NULL:" | |
139 | " already returned to OS (srb=%p)\n", srb); | |
140 | return; | |
141 | } | |
142 | ||
143 | ddb_entry = srb->ddb; | |
144 | if (ddb_entry == NULL) { | |
145 | cmd->result = DID_NO_CONNECT << 16; | |
146 | goto status_entry_exit; | |
147 | } | |
148 | ||
149 | residual = le32_to_cpu(sts_entry->residualByteCnt); | |
150 | ||
151 | /* Translate ISP error to a Linux SCSI error. */ | |
152 | scsi_status = sts_entry->scsiStatus; | |
153 | switch (sts_entry->completionStatus) { | |
154 | case SCS_COMPLETE: | |
afaf5a2d | 155 | |
6ea7e33e DS |
156 | if (sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) { |
157 | cmd->result = DID_ERROR << 16; | |
158 | break; | |
159 | } | |
160 | ||
161 | if (sts_entry->iscsiFlags &ISCSI_FLAG_RESIDUAL_UNDER) { | |
5f7186c8 | 162 | scsi_set_resid(cmd, residual); |
9d562913 DS |
163 | if (!scsi_status && ((scsi_bufflen(cmd) - residual) < |
164 | cmd->underflow)) { | |
6ea7e33e DS |
165 | |
166 | cmd->result = DID_ERROR << 16; | |
167 | ||
168 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " | |
169 | "Mid-layer Data underrun0, " | |
170 | "xferlen = 0x%x, " | |
171 | "residual = 0x%x\n", ha->host_no, | |
172 | cmd->device->channel, | |
173 | cmd->device->id, | |
174 | cmd->device->lun, __func__, | |
175 | scsi_bufflen(cmd), residual)); | |
176 | break; | |
177 | } | |
178 | } | |
afaf5a2d DS |
179 | |
180 | cmd->result = DID_OK << 16 | scsi_status; | |
181 | ||
182 | if (scsi_status != SCSI_CHECK_CONDITION) | |
183 | break; | |
184 | ||
185 | /* Copy Sense Data into sense buffer. */ | |
94bced3c | 186 | qla4xxx_copy_sense(ha, sts_entry, srb); |
afaf5a2d DS |
187 | break; |
188 | ||
189 | case SCS_INCOMPLETE: | |
190 | /* Always set the status to DID_ERROR, since | |
191 | * all conditions result in that status anyway */ | |
192 | cmd->result = DID_ERROR << 16; | |
193 | break; | |
194 | ||
195 | case SCS_RESET_OCCURRED: | |
196 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Device RESET occurred\n", | |
197 | ha->host_no, cmd->device->channel, | |
198 | cmd->device->id, cmd->device->lun, __func__)); | |
199 | ||
200 | cmd->result = DID_RESET << 16; | |
201 | break; | |
202 | ||
203 | case SCS_ABORTED: | |
204 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: Abort occurred\n", | |
205 | ha->host_no, cmd->device->channel, | |
206 | cmd->device->id, cmd->device->lun, __func__)); | |
207 | ||
208 | cmd->result = DID_RESET << 16; | |
209 | break; | |
210 | ||
211 | case SCS_TIMEOUT: | |
212 | DEBUG2(printk(KERN_INFO "scsi%ld:%d:%d:%d: Timeout\n", | |
213 | ha->host_no, cmd->device->channel, | |
214 | cmd->device->id, cmd->device->lun)); | |
215 | ||
56d7fcfa | 216 | cmd->result = DID_TRANSPORT_DISRUPTED << 16; |
afaf5a2d DS |
217 | |
218 | /* | |
219 | * Mark device missing so that we won't continue to send | |
220 | * I/O to this device. We should get a ddb state change | |
221 | * AEN soon. | |
222 | */ | |
223 | if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) | |
224 | qla4xxx_mark_device_missing(ha, ddb_entry); | |
225 | break; | |
226 | ||
227 | case SCS_DATA_UNDERRUN: | |
228 | case SCS_DATA_OVERRUN: | |
6ea7e33e DS |
229 | if ((sts_entry->iscsiFlags & ISCSI_FLAG_RESIDUAL_OVER) || |
230 | (sts_entry->completionStatus == SCS_DATA_OVERRUN)) { | |
afaf5a2d DS |
231 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " "Data overrun, " |
232 | "residual = 0x%x\n", ha->host_no, | |
233 | cmd->device->channel, cmd->device->id, | |
234 | cmd->device->lun, __func__, residual)); | |
235 | ||
236 | cmd->result = DID_ERROR << 16; | |
237 | break; | |
238 | } | |
239 | ||
6ea7e33e | 240 | scsi_set_resid(cmd, residual); |
afaf5a2d DS |
241 | |
242 | /* | |
243 | * If there is scsi_status, it takes precedense over | |
244 | * underflow condition. | |
245 | */ | |
246 | if (scsi_status != 0) { | |
247 | cmd->result = DID_OK << 16 | scsi_status; | |
248 | ||
249 | if (scsi_status != SCSI_CHECK_CONDITION) | |
250 | break; | |
251 | ||
252 | /* Copy Sense Data into sense buffer. */ | |
94bced3c | 253 | qla4xxx_copy_sense(ha, sts_entry, srb); |
afaf5a2d DS |
254 | } else { |
255 | /* | |
256 | * If RISC reports underrun and target does not | |
257 | * report it then we must have a lost frame, so | |
258 | * tell upper layer to retry it by reporting a | |
259 | * bus busy. | |
260 | */ | |
261 | if ((sts_entry->iscsiFlags & | |
262 | ISCSI_FLAG_RESIDUAL_UNDER) == 0) { | |
263 | cmd->result = DID_BUS_BUSY << 16; | |
5f7186c8 | 264 | } else if ((scsi_bufflen(cmd) - residual) < |
afaf5a2d DS |
265 | cmd->underflow) { |
266 | /* | |
267 | * Handle mid-layer underflow??? | |
268 | * | |
269 | * For kernels less than 2.4, the driver must | |
270 | * return an error if an underflow is detected. | |
271 | * For kernels equal-to and above 2.4, the | |
272 | * mid-layer will appearantly handle the | |
273 | * underflow by detecting the residual count -- | |
274 | * unfortunately, we do not see where this is | |
275 | * actually being done. In the interim, we | |
276 | * will return DID_ERROR. | |
277 | */ | |
278 | DEBUG2(printk("scsi%ld:%d:%d:%d: %s: " | |
6ea7e33e DS |
279 | "Mid-layer Data underrun1, " |
280 | "xferlen = 0x%x, " | |
281 | "residual = 0x%x\n", ha->host_no, | |
282 | cmd->device->channel, | |
283 | cmd->device->id, | |
284 | cmd->device->lun, __func__, | |
285 | scsi_bufflen(cmd), residual)); | |
afaf5a2d DS |
286 | |
287 | cmd->result = DID_ERROR << 16; | |
288 | } else { | |
289 | cmd->result = DID_OK << 16; | |
290 | } | |
291 | } | |
292 | break; | |
293 | ||
294 | case SCS_DEVICE_LOGGED_OUT: | |
295 | case SCS_DEVICE_UNAVAILABLE: | |
296 | /* | |
297 | * Mark device missing so that we won't continue to | |
298 | * send I/O to this device. We should get a ddb | |
299 | * state change AEN soon. | |
300 | */ | |
301 | if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) | |
302 | qla4xxx_mark_device_missing(ha, ddb_entry); | |
303 | ||
56d7fcfa | 304 | cmd->result = DID_TRANSPORT_DISRUPTED << 16; |
afaf5a2d DS |
305 | break; |
306 | ||
307 | case SCS_QUEUE_FULL: | |
308 | /* | |
309 | * SCSI Mid-Layer handles device queue full | |
310 | */ | |
311 | cmd->result = DID_OK << 16 | sts_entry->scsiStatus; | |
312 | DEBUG2(printk("scsi%ld:%d:%d: %s: QUEUE FULL detected " | |
313 | "compl=%02x, scsi=%02x, state=%02x, iFlags=%02x," | |
314 | " iResp=%02x\n", ha->host_no, cmd->device->id, | |
315 | cmd->device->lun, __func__, | |
316 | sts_entry->completionStatus, | |
317 | sts_entry->scsiStatus, sts_entry->state_flags, | |
318 | sts_entry->iscsiFlags, | |
319 | sts_entry->iscsiResponse)); | |
320 | break; | |
321 | ||
322 | default: | |
323 | cmd->result = DID_ERROR << 16; | |
324 | break; | |
325 | } | |
326 | ||
327 | status_entry_exit: | |
328 | ||
94bced3c | 329 | /* complete the request, if not waiting for status_continuation pkt */ |
afaf5a2d | 330 | srb->cc_stat = sts_entry->completionStatus; |
94bced3c KH |
331 | if (ha->status_srb == NULL) |
332 | qla4xxx_srb_compl(ha, srb); | |
afaf5a2d DS |
333 | } |
334 | ||
335 | /** | |
336 | * qla4xxx_process_response_queue - process response queue completions | |
337 | * @ha: Pointer to host adapter structure. | |
338 | * | |
339 | * This routine process response queue completions in interrupt context. | |
340 | * Hardware_lock locked upon entry | |
341 | **/ | |
342 | static void qla4xxx_process_response_queue(struct scsi_qla_host * ha) | |
343 | { | |
344 | uint32_t count = 0; | |
345 | struct srb *srb = NULL; | |
346 | struct status_entry *sts_entry; | |
347 | ||
348 | /* Process all responses from response queue */ | |
349 | while ((ha->response_in = | |
350 | (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in)) != | |
351 | ha->response_out) { | |
352 | sts_entry = (struct status_entry *) ha->response_ptr; | |
353 | count++; | |
354 | ||
355 | /* Advance pointers for next entry */ | |
356 | if (ha->response_out == (RESPONSE_QUEUE_DEPTH - 1)) { | |
357 | ha->response_out = 0; | |
358 | ha->response_ptr = ha->response_ring; | |
359 | } else { | |
360 | ha->response_out++; | |
361 | ha->response_ptr++; | |
362 | } | |
363 | ||
364 | /* process entry */ | |
365 | switch (sts_entry->hdr.entryType) { | |
366 | case ET_STATUS: | |
94bced3c | 367 | /* Common status */ |
afaf5a2d DS |
368 | qla4xxx_status_entry(ha, sts_entry); |
369 | break; | |
370 | ||
371 | case ET_PASSTHRU_STATUS: | |
372 | break; | |
373 | ||
374 | case ET_STATUS_CONTINUATION: | |
94bced3c KH |
375 | qla4xxx_status_cont_entry(ha, |
376 | (struct status_cont_entry *) sts_entry); | |
afaf5a2d DS |
377 | break; |
378 | ||
379 | case ET_COMMAND: | |
380 | /* ISP device queue is full. Command not | |
381 | * accepted by ISP. Queue command for | |
382 | * later */ | |
383 | ||
384 | srb = qla4xxx_del_from_active_array(ha, | |
385 | le32_to_cpu(sts_entry-> | |
386 | handle)); | |
387 | if (srb == NULL) | |
388 | goto exit_prq_invalid_handle; | |
389 | ||
390 | DEBUG2(printk("scsi%ld: %s: FW device queue full, " | |
391 | "srb %p\n", ha->host_no, __func__, srb)); | |
392 | ||
393 | /* ETRY normally by sending it back with | |
394 | * DID_BUS_BUSY */ | |
395 | srb->cmd->result = DID_BUS_BUSY << 16; | |
396 | qla4xxx_srb_compl(ha, srb); | |
397 | break; | |
398 | ||
399 | case ET_CONTINUE: | |
400 | /* Just throw away the continuation entries */ | |
401 | DEBUG2(printk("scsi%ld: %s: Continuation entry - " | |
402 | "ignoring\n", ha->host_no, __func__)); | |
403 | break; | |
404 | ||
405 | default: | |
406 | /* | |
407 | * Invalid entry in response queue, reset RISC | |
408 | * firmware. | |
409 | */ | |
410 | DEBUG2(printk("scsi%ld: %s: Invalid entry %x in " | |
411 | "response queue \n", ha->host_no, | |
412 | __func__, | |
413 | sts_entry->hdr.entryType)); | |
414 | goto exit_prq_error; | |
415 | } | |
416 | } | |
417 | ||
418 | /* | |
419 | * Done with responses, update the ISP For QLA4010, this also clears | |
420 | * the interrupt. | |
421 | */ | |
422 | writel(ha->response_out, &ha->reg->rsp_q_out); | |
423 | readl(&ha->reg->rsp_q_out); | |
424 | ||
425 | return; | |
426 | ||
427 | exit_prq_invalid_handle: | |
428 | DEBUG2(printk("scsi%ld: %s: Invalid handle(srb)=%p type=%x IOCS=%x\n", | |
429 | ha->host_no, __func__, srb, sts_entry->hdr.entryType, | |
430 | sts_entry->completionStatus)); | |
431 | ||
432 | exit_prq_error: | |
433 | writel(ha->response_out, &ha->reg->rsp_q_out); | |
434 | readl(&ha->reg->rsp_q_out); | |
435 | ||
436 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
437 | } | |
438 | ||
439 | /** | |
440 | * qla4xxx_isr_decode_mailbox - decodes mailbox status | |
441 | * @ha: Pointer to host adapter structure. | |
442 | * @mailbox_status: Mailbox status. | |
443 | * | |
444 | * This routine decodes the mailbox status during the ISR. | |
445 | * Hardware_lock locked upon entry. runs in interrupt context. | |
446 | **/ | |
447 | static void qla4xxx_isr_decode_mailbox(struct scsi_qla_host * ha, | |
448 | uint32_t mbox_status) | |
449 | { | |
450 | int i; | |
401425b1 | 451 | uint32_t mbox_stat2, mbox_stat3; |
afaf5a2d DS |
452 | |
453 | if ((mbox_status == MBOX_STS_BUSY) || | |
454 | (mbox_status == MBOX_STS_INTERMEDIATE_COMPLETION) || | |
455 | (mbox_status >> 12 == MBOX_COMPLETION_STATUS)) { | |
456 | ha->mbox_status[0] = mbox_status; | |
457 | ||
458 | if (test_bit(AF_MBOX_COMMAND, &ha->flags)) { | |
459 | /* | |
460 | * Copy all mailbox registers to a temporary | |
461 | * location and set mailbox command done flag | |
462 | */ | |
463 | for (i = 1; i < ha->mbox_status_count; i++) | |
464 | ha->mbox_status[i] = | |
465 | readl(&ha->reg->mailbox[i]); | |
466 | ||
467 | set_bit(AF_MBOX_COMMAND_DONE, &ha->flags); | |
afaf5a2d DS |
468 | } |
469 | } else if (mbox_status >> 12 == MBOX_ASYNC_EVENT_STATUS) { | |
470 | /* Immediately process the AENs that don't require much work. | |
471 | * Only queue the database_changed AENs */ | |
401425b1 DS |
472 | if (ha->aen_log.count < MAX_AEN_ENTRIES) { |
473 | for (i = 0; i < MBOX_AEN_REG_COUNT; i++) | |
474 | ha->aen_log.entry[ha->aen_log.count].mbox_sts[i] = | |
475 | readl(&ha->reg->mailbox[i]); | |
476 | ha->aen_log.count++; | |
477 | } | |
afaf5a2d DS |
478 | switch (mbox_status) { |
479 | case MBOX_ASTS_SYSTEM_ERROR: | |
480 | /* Log Mailbox registers */ | |
481 | if (ql4xdontresethba) { | |
482 | DEBUG2(printk("%s:Dont Reset HBA\n", | |
483 | __func__)); | |
484 | } else { | |
485 | set_bit(AF_GET_CRASH_RECORD, &ha->flags); | |
486 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
487 | } | |
488 | break; | |
489 | ||
490 | case MBOX_ASTS_REQUEST_TRANSFER_ERROR: | |
491 | case MBOX_ASTS_RESPONSE_TRANSFER_ERROR: | |
492 | case MBOX_ASTS_NVRAM_INVALID: | |
493 | case MBOX_ASTS_IP_ADDRESS_CHANGED: | |
494 | case MBOX_ASTS_DHCP_LEASE_EXPIRED: | |
495 | DEBUG2(printk("scsi%ld: AEN %04x, ERROR Status, " | |
496 | "Reset HA\n", ha->host_no, mbox_status)); | |
497 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
498 | break; | |
499 | ||
500 | case MBOX_ASTS_LINK_UP: | |
501 | DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK UP\n", | |
502 | ha->host_no, mbox_status)); | |
503 | set_bit(AF_LINK_UP, &ha->flags); | |
504 | break; | |
505 | ||
506 | case MBOX_ASTS_LINK_DOWN: | |
507 | DEBUG2(printk("scsi%ld: AEN %04x Adapter LINK DOWN\n", | |
508 | ha->host_no, mbox_status)); | |
509 | clear_bit(AF_LINK_UP, &ha->flags); | |
510 | break; | |
511 | ||
512 | case MBOX_ASTS_HEARTBEAT: | |
513 | ha->seconds_since_last_heartbeat = 0; | |
514 | break; | |
515 | ||
516 | case MBOX_ASTS_DHCP_LEASE_ACQUIRED: | |
517 | DEBUG2(printk("scsi%ld: AEN %04x DHCP LEASE " | |
518 | "ACQUIRED\n", ha->host_no, mbox_status)); | |
519 | set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); | |
520 | break; | |
521 | ||
522 | case MBOX_ASTS_PROTOCOL_STATISTIC_ALARM: | |
523 | case MBOX_ASTS_SCSI_COMMAND_PDU_REJECTED: /* Target | |
524 | * mode | |
525 | * only */ | |
526 | case MBOX_ASTS_UNSOLICITED_PDU_RECEIVED: /* Connection mode */ | |
527 | case MBOX_ASTS_IPSEC_SYSTEM_FATAL_ERROR: | |
528 | case MBOX_ASTS_SUBNET_STATE_CHANGE: | |
529 | /* No action */ | |
530 | DEBUG2(printk("scsi%ld: AEN %04x\n", ha->host_no, | |
531 | mbox_status)); | |
532 | break; | |
533 | ||
401425b1 DS |
534 | case MBOX_ASTS_IP_ADDR_STATE_CHANGED: |
535 | mbox_stat2 = readl(&ha->reg->mailbox[2]); | |
536 | mbox_stat3 = readl(&ha->reg->mailbox[3]); | |
537 | ||
538 | if ((mbox_stat3 == 5) && (mbox_stat2 == 3)) | |
539 | set_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags); | |
540 | else if ((mbox_stat3 == 2) && (mbox_stat2 == 5)) | |
541 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
542 | break; | |
543 | ||
afaf5a2d DS |
544 | case MBOX_ASTS_MAC_ADDRESS_CHANGED: |
545 | case MBOX_ASTS_DNS: | |
546 | /* No action */ | |
547 | DEBUG2(printk(KERN_INFO "scsi%ld: AEN %04x, " | |
548 | "mbox_sts[1]=%04x, mbox_sts[2]=%04x\n", | |
549 | ha->host_no, mbox_status, | |
550 | readl(&ha->reg->mailbox[1]), | |
551 | readl(&ha->reg->mailbox[2]))); | |
552 | break; | |
553 | ||
554 | case MBOX_ASTS_SELF_TEST_FAILED: | |
555 | case MBOX_ASTS_LOGIN_FAILED: | |
556 | /* No action */ | |
557 | DEBUG2(printk("scsi%ld: AEN %04x, mbox_sts[1]=%04x, " | |
558 | "mbox_sts[2]=%04x, mbox_sts[3]=%04x\n", | |
559 | ha->host_no, mbox_status, | |
560 | readl(&ha->reg->mailbox[1]), | |
561 | readl(&ha->reg->mailbox[2]), | |
562 | readl(&ha->reg->mailbox[3]))); | |
563 | break; | |
564 | ||
565 | case MBOX_ASTS_DATABASE_CHANGED: | |
566 | /* Queue AEN information and process it in the DPC | |
567 | * routine */ | |
568 | if (ha->aen_q_count > 0) { | |
afaf5a2d DS |
569 | |
570 | /* decrement available counter */ | |
571 | ha->aen_q_count--; | |
572 | ||
573 | for (i = 1; i < MBOX_AEN_REG_COUNT; i++) | |
574 | ha->aen_q[ha->aen_in].mbox_sts[i] = | |
575 | readl(&ha->reg->mailbox[i]); | |
576 | ||
577 | ha->aen_q[ha->aen_in].mbox_sts[0] = mbox_status; | |
578 | ||
579 | /* print debug message */ | |
580 | DEBUG2(printk("scsi%ld: AEN[%d] %04x queued" | |
581 | " mb1:0x%x mb2:0x%x mb3:0x%x mb4:0x%x\n", | |
582 | ha->host_no, ha->aen_in, | |
583 | mbox_status, | |
584 | ha->aen_q[ha->aen_in].mbox_sts[1], | |
585 | ha->aen_q[ha->aen_in].mbox_sts[2], | |
586 | ha->aen_q[ha->aen_in].mbox_sts[3], | |
587 | ha->aen_q[ha->aen_in]. mbox_sts[4])); | |
401425b1 DS |
588 | /* advance pointer */ |
589 | ha->aen_in++; | |
590 | if (ha->aen_in == MAX_AEN_ENTRIES) | |
591 | ha->aen_in = 0; | |
afaf5a2d DS |
592 | |
593 | /* The DPC routine will process the aen */ | |
594 | set_bit(DPC_AEN, &ha->dpc_flags); | |
595 | } else { | |
596 | DEBUG2(printk("scsi%ld: %s: aen %04x, queue " | |
597 | "overflowed! AEN LOST!!\n", | |
598 | ha->host_no, __func__, | |
599 | mbox_status)); | |
600 | ||
601 | DEBUG2(printk("scsi%ld: DUMP AEN QUEUE\n", | |
602 | ha->host_no)); | |
603 | ||
604 | for (i = 0; i < MAX_AEN_ENTRIES; i++) { | |
605 | DEBUG2(printk("AEN[%d] %04x %04x %04x " | |
606 | "%04x\n", i, | |
607 | ha->aen_q[i].mbox_sts[0], | |
608 | ha->aen_q[i].mbox_sts[1], | |
609 | ha->aen_q[i].mbox_sts[2], | |
610 | ha->aen_q[i].mbox_sts[3])); | |
611 | } | |
612 | } | |
613 | break; | |
614 | ||
615 | default: | |
616 | DEBUG2(printk(KERN_WARNING | |
617 | "scsi%ld: AEN %04x UNKNOWN\n", | |
618 | ha->host_no, mbox_status)); | |
619 | break; | |
620 | } | |
621 | } else { | |
622 | DEBUG2(printk("scsi%ld: Unknown mailbox status %08X\n", | |
623 | ha->host_no, mbox_status)); | |
624 | ||
625 | ha->mbox_status[0] = mbox_status; | |
626 | } | |
627 | } | |
628 | ||
629 | /** | |
630 | * qla4xxx_interrupt_service_routine - isr | |
631 | * @ha: pointer to host adapter structure. | |
632 | * | |
633 | * This is the main interrupt service routine. | |
634 | * hardware_lock locked upon entry. runs in interrupt context. | |
635 | **/ | |
636 | void qla4xxx_interrupt_service_routine(struct scsi_qla_host * ha, | |
637 | uint32_t intr_status) | |
638 | { | |
639 | /* Process response queue interrupt. */ | |
640 | if (intr_status & CSR_SCSI_COMPLETION_INTR) | |
641 | qla4xxx_process_response_queue(ha); | |
642 | ||
643 | /* Process mailbox/asynch event interrupt.*/ | |
644 | if (intr_status & CSR_SCSI_PROCESSOR_INTR) { | |
645 | qla4xxx_isr_decode_mailbox(ha, | |
646 | readl(&ha->reg->mailbox[0])); | |
647 | ||
648 | /* Clear Mailbox Interrupt */ | |
649 | writel(set_rmask(CSR_SCSI_PROCESSOR_INTR), | |
650 | &ha->reg->ctrl_status); | |
651 | readl(&ha->reg->ctrl_status); | |
652 | } | |
653 | } | |
654 | ||
655 | /** | |
656 | * qla4xxx_intr_handler - hardware interrupt handler. | |
657 | * @irq: Unused | |
658 | * @dev_id: Pointer to host adapter structure | |
afaf5a2d | 659 | **/ |
7d12e780 | 660 | irqreturn_t qla4xxx_intr_handler(int irq, void *dev_id) |
afaf5a2d DS |
661 | { |
662 | struct scsi_qla_host *ha; | |
663 | uint32_t intr_status; | |
664 | unsigned long flags = 0; | |
665 | uint8_t reqs_count = 0; | |
666 | ||
667 | ha = (struct scsi_qla_host *) dev_id; | |
668 | if (!ha) { | |
669 | DEBUG2(printk(KERN_INFO | |
670 | "qla4xxx: Interrupt with NULL host ptr\n")); | |
671 | return IRQ_NONE; | |
672 | } | |
673 | ||
674 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
675 | ||
d915058f | 676 | ha->isr_count++; |
afaf5a2d DS |
677 | /* |
678 | * Repeatedly service interrupts up to a maximum of | |
679 | * MAX_REQS_SERVICED_PER_INTR | |
680 | */ | |
681 | while (1) { | |
682 | /* | |
683 | * Read interrupt status | |
684 | */ | |
685 | if (le32_to_cpu(ha->shadow_regs->rsp_q_in) != | |
686 | ha->response_out) | |
687 | intr_status = CSR_SCSI_COMPLETION_INTR; | |
688 | else | |
689 | intr_status = readl(&ha->reg->ctrl_status); | |
690 | ||
691 | if ((intr_status & | |
692 | (CSR_SCSI_RESET_INTR|CSR_FATAL_ERROR|INTR_PENDING)) == | |
693 | 0) { | |
694 | if (reqs_count == 0) | |
695 | ha->spurious_int_count++; | |
696 | break; | |
697 | } | |
698 | ||
699 | if (intr_status & CSR_FATAL_ERROR) { | |
700 | DEBUG2(printk(KERN_INFO "scsi%ld: Fatal Error, " | |
701 | "Status 0x%04x\n", ha->host_no, | |
702 | readl(isp_port_error_status (ha)))); | |
703 | ||
704 | /* Issue Soft Reset to clear this error condition. | |
705 | * This will prevent the RISC from repeatedly | |
706 | * interrupting the driver; thus, allowing the DPC to | |
707 | * get scheduled to continue error recovery. | |
708 | * NOTE: Disabling RISC interrupts does not work in | |
709 | * this case, as CSR_FATAL_ERROR overrides | |
710 | * CSR_SCSI_INTR_ENABLE */ | |
711 | if ((readl(&ha->reg->ctrl_status) & | |
712 | CSR_SCSI_RESET_INTR) == 0) { | |
713 | writel(set_rmask(CSR_SOFT_RESET), | |
714 | &ha->reg->ctrl_status); | |
715 | readl(&ha->reg->ctrl_status); | |
716 | } | |
717 | ||
718 | writel(set_rmask(CSR_FATAL_ERROR), | |
719 | &ha->reg->ctrl_status); | |
720 | readl(&ha->reg->ctrl_status); | |
721 | ||
722 | __qla4xxx_disable_intrs(ha); | |
723 | ||
724 | set_bit(DPC_RESET_HA, &ha->dpc_flags); | |
725 | ||
726 | break; | |
727 | } else if (intr_status & CSR_SCSI_RESET_INTR) { | |
728 | clear_bit(AF_ONLINE, &ha->flags); | |
729 | __qla4xxx_disable_intrs(ha); | |
730 | ||
731 | writel(set_rmask(CSR_SCSI_RESET_INTR), | |
732 | &ha->reg->ctrl_status); | |
733 | readl(&ha->reg->ctrl_status); | |
734 | ||
477ffb9d DS |
735 | if (!ql4_mod_unload) |
736 | set_bit(DPC_RESET_HA_INTR, &ha->dpc_flags); | |
afaf5a2d DS |
737 | |
738 | break; | |
739 | } else if (intr_status & INTR_PENDING) { | |
740 | qla4xxx_interrupt_service_routine(ha, intr_status); | |
741 | ha->total_io_count++; | |
742 | if (++reqs_count == MAX_REQS_SERVICED_PER_INTR) | |
743 | break; | |
744 | ||
745 | intr_status = 0; | |
746 | } | |
747 | } | |
748 | ||
749 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
750 | ||
751 | return IRQ_HANDLED; | |
752 | } | |
753 | ||
754 | /** | |
755 | * qla4xxx_process_aen - processes AENs generated by firmware | |
756 | * @ha: pointer to host adapter structure. | |
757 | * @process_aen: type of AENs to process | |
758 | * | |
759 | * Processes specific types of Asynchronous Events generated by firmware. | |
760 | * The type of AENs to process is specified by process_aen and can be | |
761 | * PROCESS_ALL_AENS 0 | |
762 | * FLUSH_DDB_CHANGED_AENS 1 | |
763 | * RELOGIN_DDB_CHANGED_AENS 2 | |
764 | **/ | |
765 | void qla4xxx_process_aen(struct scsi_qla_host * ha, uint8_t process_aen) | |
766 | { | |
767 | uint32_t mbox_sts[MBOX_AEN_REG_COUNT]; | |
768 | struct aen *aen; | |
769 | int i; | |
770 | unsigned long flags; | |
771 | ||
772 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
773 | while (ha->aen_out != ha->aen_in) { | |
afaf5a2d | 774 | aen = &ha->aen_q[ha->aen_out]; |
afaf5a2d DS |
775 | /* copy aen information to local structure */ |
776 | for (i = 0; i < MBOX_AEN_REG_COUNT; i++) | |
777 | mbox_sts[i] = aen->mbox_sts[i]; | |
778 | ||
401425b1 DS |
779 | ha->aen_q_count++; |
780 | ha->aen_out++; | |
781 | ||
782 | if (ha->aen_out == MAX_AEN_ENTRIES) | |
783 | ha->aen_out = 0; | |
784 | ||
afaf5a2d DS |
785 | spin_unlock_irqrestore(&ha->hardware_lock, flags); |
786 | ||
401425b1 DS |
787 | DEBUG2(printk("qla4xxx(%ld): AEN[%d]=0x%08x, mbx1=0x%08x mbx2=0x%08x" |
788 | " mbx3=0x%08x mbx4=0x%08x\n", ha->host_no, | |
789 | (ha->aen_out ? (ha->aen_out-1): (MAX_AEN_ENTRIES-1)), | |
790 | mbox_sts[0], mbox_sts[1], mbox_sts[2], | |
791 | mbox_sts[3], mbox_sts[4])); | |
afaf5a2d DS |
792 | |
793 | switch (mbox_sts[0]) { | |
794 | case MBOX_ASTS_DATABASE_CHANGED: | |
795 | if (process_aen == FLUSH_DDB_CHANGED_AENS) { | |
796 | DEBUG2(printk("scsi%ld: AEN[%d] %04x, index " | |
797 | "[%d] state=%04x FLUSHED!\n", | |
798 | ha->host_no, ha->aen_out, | |
799 | mbox_sts[0], mbox_sts[2], | |
800 | mbox_sts[3])); | |
801 | break; | |
802 | } else if (process_aen == RELOGIN_DDB_CHANGED_AENS) { | |
803 | /* for use during init time, we only want to | |
804 | * relogin non-active ddbs */ | |
805 | struct ddb_entry *ddb_entry; | |
806 | ||
807 | ddb_entry = | |
808 | /* FIXME: name length? */ | |
809 | qla4xxx_lookup_ddb_by_fw_index(ha, | |
810 | mbox_sts[2]); | |
811 | if (!ddb_entry) | |
812 | break; | |
813 | ||
814 | ddb_entry->dev_scan_wait_to_complete_relogin = | |
815 | 0; | |
816 | ddb_entry->dev_scan_wait_to_start_relogin = | |
817 | jiffies + | |
818 | ((ddb_entry->default_time2wait + | |
819 | 4) * HZ); | |
820 | ||
821 | DEBUG2(printk("scsi%ld: ddb index [%d] initate" | |
822 | " RELOGIN after %d seconds\n", | |
823 | ha->host_no, | |
824 | ddb_entry->fw_ddb_index, | |
825 | ddb_entry->default_time2wait + | |
826 | 4)); | |
827 | break; | |
828 | } | |
829 | ||
830 | if (mbox_sts[1] == 0) { /* Global DB change. */ | |
831 | qla4xxx_reinitialize_ddb_list(ha); | |
832 | } else if (mbox_sts[1] == 1) { /* Specific device. */ | |
833 | qla4xxx_process_ddb_changed(ha, mbox_sts[2], | |
834 | mbox_sts[3]); | |
835 | } | |
836 | break; | |
837 | } | |
838 | spin_lock_irqsave(&ha->hardware_lock, flags); | |
839 | } | |
840 | spin_unlock_irqrestore(&ha->hardware_lock, flags); | |
afaf5a2d DS |
841 | } |
842 |