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Merge master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa
[wrt350n-kernel.git] / drivers / scsi / qla2xxx / qla_isr.c
blob795bf15b1b8f0a916dc20f6669d626c85103098c
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2005 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8
9 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
10 static void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
11 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
12 static void qla2x00_status_entry(scsi_qla_host_t *, void *);
13 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
14 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
15 static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
16
17 static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
18
19 /**
20 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
21 * @irq:
22 * @dev_id: SCSI driver HA context
23 * @regs:
24 *
25 * Called by system whenever the host adapter generates an interrupt.
26 *
27 * Returns handled flag.
28 */
29 irqreturn_t
30 qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
31 {
32 scsi_qla_host_t *ha;
33 struct device_reg_2xxx __iomem *reg;
34 int status;
35 unsigned long flags;
36 unsigned long iter;
37 uint16_t mb[4];
38
39 ha = (scsi_qla_host_t *) dev_id;
40 if (!ha) {
41 printk(KERN_INFO
42 "%s(): NULL host pointer\n", __func__);
43 return (IRQ_NONE);
44 }
45
46 reg = &ha->iobase->isp;
47 status = 0;
48
49 spin_lock_irqsave(&ha->hardware_lock, flags);
50 for (iter = 50; iter--; ) {
51 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
52 break;
53
54 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
55 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
56 RD_REG_WORD(&reg->hccr);
57
58 /* Get mailbox data. */
59 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
60 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
61 qla2x00_mbx_completion(ha, mb[0]);
62 status |= MBX_INTERRUPT;
63 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
64 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
65 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
66 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
67 qla2x00_async_event(ha, mb);
68 } else {
69 /*EMPTY*/
70 DEBUG2(printk("scsi(%ld): Unrecognized "
71 "interrupt type (%d).\n",
72 ha->host_no, mb[0]));
73 }
74 /* Release mailbox registers. */
75 WRT_REG_WORD(&reg->semaphore, 0);
76 RD_REG_WORD(&reg->semaphore);
77 } else {
78 qla2x00_process_response_queue(ha);
79
80 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
81 RD_REG_WORD(&reg->hccr);
82 }
83 }
84 spin_unlock_irqrestore(&ha->hardware_lock, flags);
85
86 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
87 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
88 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
89
90 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
91 up(&ha->mbx_intr_sem);
92
93 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
94 }
95
96 return (IRQ_HANDLED);
97 }
98
99 /**
100 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
101 * @irq:
102 * @dev_id: SCSI driver HA context
103 * @regs:
104 *
105 * Called by system whenever the host adapter generates an interrupt.
106 *
107 * Returns handled flag.
108 */
109 irqreturn_t
110 qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
111 {
112 scsi_qla_host_t *ha;
113 struct device_reg_2xxx __iomem *reg;
114 int status;
115 unsigned long flags;
116 unsigned long iter;
117 uint32_t stat;
118 uint16_t hccr;
119 uint16_t mb[4];
120
121 ha = (scsi_qla_host_t *) dev_id;
122 if (!ha) {
123 printk(KERN_INFO
124 "%s(): NULL host pointer\n", __func__);
125 return (IRQ_NONE);
126 }
127
128 reg = &ha->iobase->isp;
129 status = 0;
130
131 spin_lock_irqsave(&ha->hardware_lock, flags);
132 for (iter = 50; iter--; ) {
133 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
134 if (stat & HSR_RISC_PAUSED) {
135 hccr = RD_REG_WORD(&reg->hccr);
136 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
137 qla_printk(KERN_INFO, ha,
138 "Parity error -- HCCR=%x.\n", hccr);
139 else
140 qla_printk(KERN_INFO, ha,
141 "RISC paused -- HCCR=%x.\n", hccr);
142
143 /*
144 * Issue a "HARD" reset in order for the RISC
145 * interrupt bit to be cleared. Schedule a big
146 * hammmer to get out of the RISC PAUSED state.
147 */
148 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
149 RD_REG_WORD(&reg->hccr);
150 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
151 break;
152 } else if ((stat & HSR_RISC_INT) == 0)
153 break;
154
155 switch (stat & 0xff) {
156 case 0x1:
157 case 0x2:
158 case 0x10:
159 case 0x11:
160 qla2x00_mbx_completion(ha, MSW(stat));
161 status |= MBX_INTERRUPT;
162
163 /* Release mailbox registers. */
164 WRT_REG_WORD(&reg->semaphore, 0);
165 break;
166 case 0x12:
167 mb[0] = MSW(stat);
168 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
169 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
170 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
171 qla2x00_async_event(ha, mb);
172 break;
173 case 0x13:
174 qla2x00_process_response_queue(ha);
175 break;
176 case 0x15:
177 mb[0] = MBA_CMPLT_1_16BIT;
178 mb[1] = MSW(stat);
179 qla2x00_async_event(ha, mb);
180 break;
181 case 0x16:
182 mb[0] = MBA_SCSI_COMPLETION;
183 mb[1] = MSW(stat);
184 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
185 qla2x00_async_event(ha, mb);
186 break;
187 default:
188 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
189 "(%d).\n",
190 ha->host_no, stat & 0xff));
191 break;
192 }
193 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
194 RD_REG_WORD_RELAXED(&reg->hccr);
195 }
196 spin_unlock_irqrestore(&ha->hardware_lock, flags);
197
198 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
199 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
200 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
201
202 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
203 up(&ha->mbx_intr_sem);
204
205 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
206 }
207
208 return (IRQ_HANDLED);
209 }
210
211 /**
212 * qla2x00_mbx_completion() - Process mailbox command completions.
213 * @ha: SCSI driver HA context
214 * @mb0: Mailbox0 register
215 */
216 static void
217 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
218 {
219 uint16_t cnt;
220 uint16_t __iomem *wptr;
221 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
222
223 /* Load return mailbox registers. */
224 ha->flags.mbox_int = 1;
225 ha->mailbox_out[0] = mb0;
226 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
227
228 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
229 if (IS_QLA2200(ha) && cnt == 8)
230 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
231 if (cnt == 4 || cnt == 5)
232 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
233 else
234 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
235
236 wptr++;
237 }
238
239 if (ha->mcp) {
240 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
241 __func__, ha->host_no, ha->mcp->mb[0]));
242 } else {
243 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
244 __func__, ha->host_no));
245 }
246 }
247
248 /**
249 * qla2x00_async_event() - Process aynchronous events.
250 * @ha: SCSI driver HA context
251 * @mb: Mailbox registers (0 - 3)
252 */
253 static void
254 qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
255 {
256 #define LS_UNKNOWN 2
257 static char *link_speeds[5] = { "1", "2", "?", "4", "10" };
258 char *link_speed;
259 uint16_t handle_cnt;
260 uint16_t cnt;
261 uint32_t handles[5];
262 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
263 uint32_t rscn_entry, host_pid;
264 uint8_t rscn_queue_index;
265
266 /* Setup to process RIO completion. */
267 handle_cnt = 0;
268 switch (mb[0]) {
269 case MBA_SCSI_COMPLETION:
270 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
271 handle_cnt = 1;
272 break;
273 case MBA_CMPLT_1_16BIT:
274 handles[0] = mb[1];
275 handle_cnt = 1;
276 mb[0] = MBA_SCSI_COMPLETION;
277 break;
278 case MBA_CMPLT_2_16BIT:
279 handles[0] = mb[1];
280 handles[1] = mb[2];
281 handle_cnt = 2;
282 mb[0] = MBA_SCSI_COMPLETION;
283 break;
284 case MBA_CMPLT_3_16BIT:
285 handles[0] = mb[1];
286 handles[1] = mb[2];
287 handles[2] = mb[3];
288 handle_cnt = 3;
289 mb[0] = MBA_SCSI_COMPLETION;
290 break;
291 case MBA_CMPLT_4_16BIT:
292 handles[0] = mb[1];
293 handles[1] = mb[2];
294 handles[2] = mb[3];
295 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
296 handle_cnt = 4;
297 mb[0] = MBA_SCSI_COMPLETION;
298 break;
299 case MBA_CMPLT_5_16BIT:
300 handles[0] = mb[1];
301 handles[1] = mb[2];
302 handles[2] = mb[3];
303 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
304 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
305 handle_cnt = 5;
306 mb[0] = MBA_SCSI_COMPLETION;
307 break;
308 case MBA_CMPLT_2_32BIT:
309 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
310 handles[1] = le32_to_cpu(
311 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
312 RD_MAILBOX_REG(ha, reg, 6));
313 handle_cnt = 2;
314 mb[0] = MBA_SCSI_COMPLETION;
315 break;
316 default:
317 break;
318 }
319
320 switch (mb[0]) {
321 case MBA_SCSI_COMPLETION: /* Fast Post */
322 if (!ha->flags.online)
323 break;
324
325 for (cnt = 0; cnt < handle_cnt; cnt++)
326 qla2x00_process_completed_request(ha, handles[cnt]);
327 break;
328
329 case MBA_RESET: /* Reset */
330 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
331
332 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
333 break;
334
335 case MBA_SYSTEM_ERR: /* System Error */
336 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
337 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
338 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
339
340 qla_printk(KERN_INFO, ha,
341 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
342 mb[1], mb[2], mb[3]);
343
344 ha->isp_ops.fw_dump(ha, 1);
345
346 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
347 if (mb[1] == 0 && mb[2] == 0) {
348 qla_printk(KERN_ERR, ha,
349 "Unrecoverable Hardware Error: adapter "
350 "marked OFFLINE!\n");
351 ha->flags.online = 0;
352 } else
353 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
354 } else if (mb[1] == 0) {
355 qla_printk(KERN_INFO, ha,
356 "Unrecoverable Hardware Error: adapter marked "
357 "OFFLINE!\n");
358 ha->flags.online = 0;
359 } else
360 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
361 break;
362
363 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
364 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
365 ha->host_no));
366 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
367
368 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
369 break;
370
371 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
372 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
373 ha->host_no));
374 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
375
376 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
377 break;
378
379 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
380 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
381 ha->host_no));
382 break;
383
384 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
385 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
386 mb[1]));
387 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
388
389 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
390 atomic_set(&ha->loop_state, LOOP_DOWN);
391 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
392 qla2x00_mark_all_devices_lost(ha, 1);
393 }
394
395 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
396
397 ha->flags.management_server_logged_in = 0;
398 break;
399
400 case MBA_LOOP_UP: /* Loop Up Event */
401 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
402 link_speed = link_speeds[0];
403 ha->link_data_rate = LDR_1GB;
404 } else {
405 link_speed = link_speeds[LS_UNKNOWN];
406 if (mb[1] < 5)
407 link_speed = link_speeds[mb[1]];
408 ha->link_data_rate = mb[1];
409 }
410
411 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
412 ha->host_no, link_speed));
413 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
414 link_speed);
415
416 ha->flags.management_server_logged_in = 0;
417 break;
418
419 case MBA_LOOP_DOWN: /* Loop Down Event */
420 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
421 ha->host_no, mb[1]));
422 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
423
424 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
425 atomic_set(&ha->loop_state, LOOP_DOWN);
426 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
427 ha->device_flags |= DFLG_NO_CABLE;
428 qla2x00_mark_all_devices_lost(ha, 1);
429 }
430
431 ha->flags.management_server_logged_in = 0;
432 ha->link_data_rate = LDR_UNKNOWN;
433 if (ql2xfdmienable)
434 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
435 break;
436
437 case MBA_LIP_RESET: /* LIP reset occurred */
438 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
439 ha->host_no, mb[1]));
440 qla_printk(KERN_INFO, ha,
441 "LIP reset occured (%x).\n", mb[1]);
442
443 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
444 atomic_set(&ha->loop_state, LOOP_DOWN);
445 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
446 qla2x00_mark_all_devices_lost(ha, 1);
447 }
448
449 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
450
451 ha->operating_mode = LOOP;
452 ha->flags.management_server_logged_in = 0;
453 break;
454
455 case MBA_POINT_TO_POINT: /* Point-to-Point */
456 if (IS_QLA2100(ha))
457 break;
458
459 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
460 ha->host_no));
461
462 /*
463 * Until there's a transition from loop down to loop up, treat
464 * this as loop down only.
465 */
466 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
467 atomic_set(&ha->loop_state, LOOP_DOWN);
468 if (!atomic_read(&ha->loop_down_timer))
469 atomic_set(&ha->loop_down_timer,
470 LOOP_DOWN_TIME);
471 qla2x00_mark_all_devices_lost(ha, 1);
472 }
473
474 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
475 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
476 }
477 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
478 break;
479
480 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
481 if (IS_QLA2100(ha))
482 break;
483
484 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
485 "received.\n",
486 ha->host_no));
487 qla_printk(KERN_INFO, ha,
488 "Configuration change detected: value=%x.\n", mb[1]);
489
490 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
491 atomic_set(&ha->loop_state, LOOP_DOWN);
492 if (!atomic_read(&ha->loop_down_timer))
493 atomic_set(&ha->loop_down_timer,
494 LOOP_DOWN_TIME);
495 qla2x00_mark_all_devices_lost(ha, 1);
496 }
497
498 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
499 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
500 break;
501
502 case MBA_PORT_UPDATE: /* Port database update */
503 /*
504 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
505 * event etc. earlier indicating loop is down) then process
506 * it. Otherwise ignore it and Wait for RSCN to come in.
507 */
508 atomic_set(&ha->loop_down_timer, 0);
509 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
510 atomic_read(&ha->loop_state) != LOOP_DEAD) {
511 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
512 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
513 mb[2], mb[3]));
514 break;
515 }
516
517 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
518 ha->host_no));
519 DEBUG(printk(KERN_INFO
520 "scsi(%ld): Port database changed %04x %04x %04x.\n",
521 ha->host_no, mb[1], mb[2], mb[3]));
522
523 /*
524 * Mark all devices as missing so we will login again.
525 */
526 atomic_set(&ha->loop_state, LOOP_UP);
527
528 qla2x00_mark_all_devices_lost(ha, 1);
529
530 ha->flags.rscn_queue_overflow = 1;
531
532 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
533 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
534 break;
535
536 case MBA_RSCN_UPDATE: /* State Change Registration */
537 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
538 ha->host_no));
539 DEBUG(printk(KERN_INFO
540 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
541 ha->host_no, mb[1], mb[2]));
542
543 rscn_entry = (mb[1] << 16) | mb[2];
544 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
545 ha->d_id.b.al_pa;
546 if (rscn_entry == host_pid) {
547 DEBUG(printk(KERN_INFO
548 "scsi(%ld): Ignoring RSCN update to local host "
549 "port ID (%06x)\n",
550 ha->host_no, host_pid));
551 break;
552 }
553
554 rscn_queue_index = ha->rscn_in_ptr + 1;
555 if (rscn_queue_index == MAX_RSCN_COUNT)
556 rscn_queue_index = 0;
557 if (rscn_queue_index != ha->rscn_out_ptr) {
558 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
559 ha->rscn_in_ptr = rscn_queue_index;
560 } else {
561 ha->flags.rscn_queue_overflow = 1;
562 }
563
564 atomic_set(&ha->loop_state, LOOP_UPDATE);
565 atomic_set(&ha->loop_down_timer, 0);
566 ha->flags.management_server_logged_in = 0;
567
568 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
569 set_bit(RSCN_UPDATE, &ha->dpc_flags);
570 break;
571
572 /* case MBA_RIO_RESPONSE: */
573 case MBA_ZIO_RESPONSE:
574 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
575 ha->host_no));
576 DEBUG(printk(KERN_INFO
577 "scsi(%ld): [R|Z]IO update completion.\n",
578 ha->host_no));
579
580 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
581 qla24xx_process_response_queue(ha);
582 else
583 qla2x00_process_response_queue(ha);
584 break;
585
586 case MBA_DISCARD_RND_FRAME:
587 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
588 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
589 break;
590 }
591 }
592
593 /**
594 * qla2x00_process_completed_request() - Process a Fast Post response.
595 * @ha: SCSI driver HA context
596 * @index: SRB index
597 */
598 static void
599 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
600 {
601 srb_t *sp;
602
603 /* Validate handle. */
604 if (index >= MAX_OUTSTANDING_COMMANDS) {
605 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
606 ha->host_no, index));
607 qla_printk(KERN_WARNING, ha,
608 "Invalid SCSI completion handle %d.\n", index);
609
610 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
611 return;
612 }
613
614 sp = ha->outstanding_cmds[index];
615 if (sp) {
616 /* Free outstanding command slot. */
617 ha->outstanding_cmds[index] = NULL;
618
619 CMD_COMPL_STATUS(sp->cmd) = 0L;
620 CMD_SCSI_STATUS(sp->cmd) = 0L;
621
622 /* Save ISP completion status */
623 sp->cmd->result = DID_OK << 16;
624 qla2x00_sp_compl(ha, sp);
625 } else {
626 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
627 ha->host_no));
628 qla_printk(KERN_WARNING, ha,
629 "Invalid ISP SCSI completion handle\n");
630
631 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
632 }
633 }
634
635 /**
636 * qla2x00_process_response_queue() - Process response queue entries.
637 * @ha: SCSI driver HA context
638 */
639 void
640 qla2x00_process_response_queue(struct scsi_qla_host *ha)
641 {
642 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
643 sts_entry_t *pkt;
644 uint16_t handle_cnt;
645 uint16_t cnt;
646
647 if (!ha->flags.online)
648 return;
649
650 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
651 pkt = (sts_entry_t *)ha->response_ring_ptr;
652
653 ha->rsp_ring_index++;
654 if (ha->rsp_ring_index == ha->response_q_length) {
655 ha->rsp_ring_index = 0;
656 ha->response_ring_ptr = ha->response_ring;
657 } else {
658 ha->response_ring_ptr++;
659 }
660
661 if (pkt->entry_status != 0) {
662 DEBUG3(printk(KERN_INFO
663 "scsi(%ld): Process error entry.\n", ha->host_no));
664
665 qla2x00_error_entry(ha, pkt);
666 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
667 wmb();
668 continue;
669 }
670
671 switch (pkt->entry_type) {
672 case STATUS_TYPE:
673 qla2x00_status_entry(ha, pkt);
674 break;
675 case STATUS_TYPE_21:
676 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
677 for (cnt = 0; cnt < handle_cnt; cnt++) {
678 qla2x00_process_completed_request(ha,
679 ((sts21_entry_t *)pkt)->handle[cnt]);
680 }
681 break;
682 case STATUS_TYPE_22:
683 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
684 for (cnt = 0; cnt < handle_cnt; cnt++) {
685 qla2x00_process_completed_request(ha,
686 ((sts22_entry_t *)pkt)->handle[cnt]);
687 }
688 break;
689 case STATUS_CONT_TYPE:
690 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
691 break;
692 case MS_IOCB_TYPE:
693 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
694 break;
695 default:
696 /* Type Not Supported. */
697 DEBUG4(printk(KERN_WARNING
698 "scsi(%ld): Received unknown response pkt type %x "
699 "entry status=%x.\n",
700 ha->host_no, pkt->entry_type, pkt->entry_status));
701 break;
702 }
703 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
704 wmb();
705 }
706
707 /* Adjust ring index */
708 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
709 }
710
711 /**
712 * qla2x00_status_entry() - Process a Status IOCB entry.
713 * @ha: SCSI driver HA context
714 * @pkt: Entry pointer
715 */
716 static void
717 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
718 {
719 srb_t *sp;
720 fc_port_t *fcport;
721 struct scsi_cmnd *cp;
722 sts_entry_t *sts;
723 struct sts_entry_24xx *sts24;
724 uint16_t comp_status;
725 uint16_t scsi_status;
726 uint8_t lscsi_status;
727 int32_t resid;
728 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
729 uint8_t *rsp_info, *sense_data;
730
731 sts = (sts_entry_t *) pkt;
732 sts24 = (struct sts_entry_24xx *) pkt;
733 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
734 comp_status = le16_to_cpu(sts24->comp_status);
735 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
736 } else {
737 comp_status = le16_to_cpu(sts->comp_status);
738 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
739 }
740
741 /* Fast path completion. */
742 if (comp_status == CS_COMPLETE && scsi_status == 0) {
743 qla2x00_process_completed_request(ha, sts->handle);
744
745 return;
746 }
747
748 /* Validate handle. */
749 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
750 sp = ha->outstanding_cmds[sts->handle];
751 ha->outstanding_cmds[sts->handle] = NULL;
752 } else
753 sp = NULL;
754
755 if (sp == NULL) {
756 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
757 ha->host_no));
758 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
759
760 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
761 qla2xxx_wake_dpc(ha);
762 return;
763 }
764 cp = sp->cmd;
765 if (cp == NULL) {
766 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
767 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
768 qla_printk(KERN_WARNING, ha,
769 "Command is NULL: already returned to OS (sp=%p)\n", sp);
770
771 return;
772 }
773
774 lscsi_status = scsi_status & STATUS_MASK;
775 CMD_ENTRY_STATUS(cp) = sts->entry_status;
776 CMD_COMPL_STATUS(cp) = comp_status;
777 CMD_SCSI_STATUS(cp) = scsi_status;
778
779 fcport = sp->fcport;
780
781 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
782 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
783 sense_len = le32_to_cpu(sts24->sense_len);
784 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
785 resid_len = le32_to_cpu(sts24->rsp_residual_count);
786 fw_resid_len = le32_to_cpu(sts24->residual_len);
787 rsp_info = sts24->data;
788 sense_data = sts24->data;
789 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
790 } else {
791 sense_len = le16_to_cpu(sts->req_sense_length);
792 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
793 resid_len = le32_to_cpu(sts->residual_length);
794 rsp_info = sts->rsp_info;
795 sense_data = sts->req_sense_data;
796 }
797
798 /* Check for any FCP transport errors. */
799 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
800 /* Sense data lies beyond any FCP RESPONSE data. */
801 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
802 sense_data += rsp_info_len;
803 if (rsp_info_len > 3 && rsp_info[3]) {
804 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
805 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
806 "retrying command\n", ha->host_no,
807 cp->device->channel, cp->device->id,
808 cp->device->lun, rsp_info_len, rsp_info[0],
809 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
810 rsp_info[5], rsp_info[6], rsp_info[7]));
811
812 cp->result = DID_BUS_BUSY << 16;
813 qla2x00_sp_compl(ha, sp);
814 return;
815 }
816 }
817
818 /*
819 * Based on Host and scsi status generate status code for Linux
820 */
821 switch (comp_status) {
822 case CS_COMPLETE:
823 if (scsi_status == 0) {
824 cp->result = DID_OK << 16;
825 break;
826 }
827 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
828 resid = resid_len;
829 cp->resid = resid;
830 CMD_RESID_LEN(cp) = resid;
831
832 if (!lscsi_status &&
833 ((unsigned)(cp->request_bufflen - resid) <
834 cp->underflow)) {
835 qla_printk(KERN_INFO, ha,
836 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
837 "detected (%x of %x bytes)...returning "
838 "error status.\n", ha->host_no,
839 cp->device->channel, cp->device->id,
840 cp->device->lun, resid,
841 cp->request_bufflen);
842
843 cp->result = DID_ERROR << 16;
844 break;
845 }
846 }
847 cp->result = DID_OK << 16 | lscsi_status;
848
849 if (lscsi_status != SS_CHECK_CONDITION)
850 break;
851
852 /* Copy Sense Data into sense buffer. */
853 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
854
855 if (!(scsi_status & SS_SENSE_LEN_VALID))
856 break;
857
858 if (sense_len >= sizeof(cp->sense_buffer))
859 sense_len = sizeof(cp->sense_buffer);
860
861 CMD_ACTUAL_SNSLEN(cp) = sense_len;
862 sp->request_sense_length = sense_len;
863 sp->request_sense_ptr = cp->sense_buffer;
864
865 if (sp->request_sense_length > 32)
866 sense_len = 32;
867
868 memcpy(cp->sense_buffer, sense_data, sense_len);
869
870 sp->request_sense_ptr += sense_len;
871 sp->request_sense_length -= sense_len;
872 if (sp->request_sense_length != 0)
873 ha->status_srb = sp;
874
875 DEBUG5(printk("%s(): Check condition Sense data, "
876 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
877 ha->host_no, cp->device->channel, cp->device->id,
878 cp->device->lun, cp, cp->serial_number));
879 if (sense_len)
880 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
881 CMD_ACTUAL_SNSLEN(cp)));
882 break;
883
884 case CS_DATA_UNDERRUN:
885 resid = resid_len;
886 /* Use F/W calculated residual length. */
887 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
888 resid = fw_resid_len;
889
890 if (scsi_status & SS_RESIDUAL_UNDER) {
891 cp->resid = resid;
892 CMD_RESID_LEN(cp) = resid;
893 } else {
894 DEBUG2(printk(KERN_INFO
895 "scsi(%ld:%d:%d) UNDERRUN status detected "
896 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
897 "os_underflow=0x%x\n", ha->host_no,
898 cp->device->id, cp->device->lun, comp_status,
899 scsi_status, resid_len, resid, cp->cmnd[0],
900 cp->underflow));
901
902 }
903
904 /*
905 * Check to see if SCSI Status is non zero. If so report SCSI
906 * Status.
907 */
908 if (lscsi_status != 0) {
909 cp->result = DID_OK << 16 | lscsi_status;
910
911 if (lscsi_status != SS_CHECK_CONDITION)
912 break;
913
914 /* Copy Sense Data into sense buffer */
915 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
916
917 if (!(scsi_status & SS_SENSE_LEN_VALID))
918 break;
919
920 if (sense_len >= sizeof(cp->sense_buffer))
921 sense_len = sizeof(cp->sense_buffer);
922
923 CMD_ACTUAL_SNSLEN(cp) = sense_len;
924 sp->request_sense_length = sense_len;
925 sp->request_sense_ptr = cp->sense_buffer;
926
927 if (sp->request_sense_length > 32)
928 sense_len = 32;
929
930 memcpy(cp->sense_buffer, sense_data, sense_len);
931
932 sp->request_sense_ptr += sense_len;
933 sp->request_sense_length -= sense_len;
934 if (sp->request_sense_length != 0)
935 ha->status_srb = sp;
936
937 DEBUG5(printk("%s(): Check condition Sense data, "
938 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
939 __func__, ha->host_no, cp->device->channel,
940 cp->device->id, cp->device->lun, cp,
941 cp->serial_number));
942
943 if (sense_len)
944 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
945 CMD_ACTUAL_SNSLEN(cp)));
946 } else {
947 /*
948 * If RISC reports underrun and target does not report
949 * it then we must have a lost frame, so tell upper
950 * layer to retry it by reporting a bus busy.
951 */
952 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
953 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
954 "frame(s) detected (%x of %x bytes)..."
955 "retrying command.\n", ha->host_no,
956 cp->device->channel, cp->device->id,
957 cp->device->lun, resid,
958 cp->request_bufflen));
959
960 cp->result = DID_BUS_BUSY << 16;
961 break;
962 }
963
964 /* Handle mid-layer underflow */
965 if ((unsigned)(cp->request_bufflen - resid) <
966 cp->underflow) {
967 qla_printk(KERN_INFO, ha,
968 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
969 "detected (%x of %x bytes)...returning "
970 "error status.\n", ha->host_no,
971 cp->device->channel, cp->device->id,
972 cp->device->lun, resid,
973 cp->request_bufflen);
974
975 cp->result = DID_ERROR << 16;
976 break;
977 }
978
979 /* Everybody online, looking good... */
980 cp->result = DID_OK << 16;
981 }
982 break;
983
984 case CS_DATA_OVERRUN:
985 DEBUG2(printk(KERN_INFO
986 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
987 ha->host_no, cp->device->id, cp->device->lun, comp_status,
988 scsi_status));
989 DEBUG2(printk(KERN_INFO
990 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
991 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
992 cp->cmnd[4], cp->cmnd[5]));
993 DEBUG2(printk(KERN_INFO
994 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
995 "status!\n",
996 cp->serial_number, cp->request_bufflen, resid_len));
997
998 cp->result = DID_ERROR << 16;
999 break;
1000
1001 case CS_PORT_LOGGED_OUT:
1002 case CS_PORT_CONFIG_CHG:
1003 case CS_PORT_BUSY:
1004 case CS_INCOMPLETE:
1005 case CS_PORT_UNAVAILABLE:
1006 /*
1007 * If the port is in Target Down state, return all IOs for this
1008 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1009 * retry_queue.
1010 */
1011 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1012 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1013 ha->host_no, cp->device->id, cp->device->lun,
1014 cp->serial_number, comp_status,
1015 atomic_read(&fcport->state)));
1016
1017 cp->result = DID_BUS_BUSY << 16;
1018 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1019 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1020 }
1021 break;
1022
1023 case CS_RESET:
1024 DEBUG2(printk(KERN_INFO
1025 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1026 ha->host_no, comp_status, scsi_status));
1027
1028 cp->result = DID_RESET << 16;
1029 break;
1030
1031 case CS_ABORTED:
1032 /*
1033 * hv2.19.12 - DID_ABORT does not retry the request if we
1034 * aborted this request then abort otherwise it must be a
1035 * reset.
1036 */
1037 DEBUG2(printk(KERN_INFO
1038 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1039 ha->host_no, comp_status, scsi_status));
1040
1041 cp->result = DID_RESET << 16;
1042 break;
1043
1044 case CS_TIMEOUT:
1045 cp->result = DID_BUS_BUSY << 16;
1046
1047 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1048 DEBUG2(printk(KERN_INFO
1049 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1050 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1051 cp->device->id, cp->device->lun, comp_status,
1052 scsi_status));
1053 break;
1054 }
1055 DEBUG2(printk(KERN_INFO
1056 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1057 "sflags=%x.\n", ha->host_no, cp->device->channel,
1058 cp->device->id, cp->device->lun, comp_status, scsi_status,
1059 le16_to_cpu(sts->status_flags)));
1060
1061 /* Check to see if logout occurred. */
1062 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1063 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1064 break;
1065
1066 case CS_QUEUE_FULL:
1067 DEBUG2(printk(KERN_INFO
1068 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1069 ha->host_no, comp_status, scsi_status));
1070
1071 /* SCSI Mid-Layer handles device queue full */
1072
1073 cp->result = DID_OK << 16 | lscsi_status;
1074
1075 break;
1076
1077 default:
1078 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1079 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1080 qla_printk(KERN_INFO, ha,
1081 "Unknown status detected 0x%x-0x%x.\n",
1082 comp_status, scsi_status);
1083
1084 cp->result = DID_ERROR << 16;
1085 break;
1086 }
1087
1088 /* Place command on done queue. */
1089 if (ha->status_srb == NULL)
1090 qla2x00_sp_compl(ha, sp);
1091 }
1092
1093 /**
1094 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1095 * @ha: SCSI driver HA context
1096 * @pkt: Entry pointer
1097 *
1098 * Extended sense data.
1099 */
1100 static void
1101 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1102 {
1103 uint8_t sense_sz = 0;
1104 srb_t *sp = ha->status_srb;
1105 struct scsi_cmnd *cp;
1106
1107 if (sp != NULL && sp->request_sense_length != 0) {
1108 cp = sp->cmd;
1109 if (cp == NULL) {
1110 DEBUG2(printk("%s(): Cmd already returned back to OS "
1111 "sp=%p.\n", __func__, sp));
1112 qla_printk(KERN_INFO, ha,
1113 "cmd is NULL: already returned to OS (sp=%p)\n",
1114 sp);
1115
1116 ha->status_srb = NULL;
1117 return;
1118 }
1119
1120 if (sp->request_sense_length > sizeof(pkt->data)) {
1121 sense_sz = sizeof(pkt->data);
1122 } else {
1123 sense_sz = sp->request_sense_length;
1124 }
1125
1126 /* Move sense data. */
1127 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
1128 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1129 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1130 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1131
1132 sp->request_sense_ptr += sense_sz;
1133 sp->request_sense_length -= sense_sz;
1134
1135 /* Place command on done queue. */
1136 if (sp->request_sense_length == 0) {
1137 ha->status_srb = NULL;
1138 qla2x00_sp_compl(ha, sp);
1139 }
1140 }
1141 }
1142
1143 /**
1144 * qla2x00_error_entry() - Process an error entry.
1145 * @ha: SCSI driver HA context
1146 * @pkt: Entry pointer
1147 */
1148 static void
1149 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1150 {
1151 srb_t *sp;
1152
1153 #if defined(QL_DEBUG_LEVEL_2)
1154 if (pkt->entry_status & RF_INV_E_ORDER)
1155 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1156 else if (pkt->entry_status & RF_INV_E_COUNT)
1157 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1158 else if (pkt->entry_status & RF_INV_E_PARAM)
1159 qla_printk(KERN_ERR, ha,
1160 "%s: Invalid Entry Parameter\n", __func__);
1161 else if (pkt->entry_status & RF_INV_E_TYPE)
1162 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1163 else if (pkt->entry_status & RF_BUSY)
1164 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1165 else
1166 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1167 #endif
1168
1169 /* Validate handle. */
1170 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1171 sp = ha->outstanding_cmds[pkt->handle];
1172 else
1173 sp = NULL;
1174
1175 if (sp) {
1176 /* Free outstanding command slot. */
1177 ha->outstanding_cmds[pkt->handle] = NULL;
1178
1179 /* Bad payload or header */
1180 if (pkt->entry_status &
1181 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1182 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1183 sp->cmd->result = DID_ERROR << 16;
1184 } else if (pkt->entry_status & RF_BUSY) {
1185 sp->cmd->result = DID_BUS_BUSY << 16;
1186 } else {
1187 sp->cmd->result = DID_ERROR << 16;
1188 }
1189 qla2x00_sp_compl(ha, sp);
1190
1191 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1192 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1193 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1194 ha->host_no));
1195 qla_printk(KERN_WARNING, ha,
1196 "Error entry - invalid handle\n");
1197
1198 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1199 qla2xxx_wake_dpc(ha);
1200 }
1201 }
1202
1203 /**
1204 * qla2x00_ms_entry() - Process a Management Server entry.
1205 * @ha: SCSI driver HA context
1206 * @index: Response queue out pointer
1207 */
1208 static void
1209 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1210 {
1211 srb_t *sp;
1212
1213 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1214 __func__, ha->host_no, pkt, pkt->handle1));
1215
1216 /* Validate handle. */
1217 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1218 sp = ha->outstanding_cmds[pkt->handle1];
1219 else
1220 sp = NULL;
1221
1222 if (sp == NULL) {
1223 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1224 ha->host_no));
1225 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1226
1227 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1228 return;
1229 }
1230
1231 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1232 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1233
1234 /* Free outstanding command slot. */
1235 ha->outstanding_cmds[pkt->handle1] = NULL;
1236
1237 qla2x00_sp_compl(ha, sp);
1238 }
1239
1240
1241 /**
1242 * qla24xx_mbx_completion() - Process mailbox command completions.
1243 * @ha: SCSI driver HA context
1244 * @mb0: Mailbox0 register
1245 */
1246 static void
1247 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1248 {
1249 uint16_t cnt;
1250 uint16_t __iomem *wptr;
1251 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1252
1253 /* Load return mailbox registers. */
1254 ha->flags.mbox_int = 1;
1255 ha->mailbox_out[0] = mb0;
1256 wptr = (uint16_t __iomem *)&reg->mailbox1;
1257
1258 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1259 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1260 wptr++;
1261 }
1262
1263 if (ha->mcp) {
1264 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1265 __func__, ha->host_no, ha->mcp->mb[0]));
1266 } else {
1267 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1268 __func__, ha->host_no));
1269 }
1270 }
1271
1272 /**
1273 * qla24xx_process_response_queue() - Process response queue entries.
1274 * @ha: SCSI driver HA context
1275 */
1276 void
1277 qla24xx_process_response_queue(struct scsi_qla_host *ha)
1278 {
1279 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1280 struct sts_entry_24xx *pkt;
1281
1282 if (!ha->flags.online)
1283 return;
1284
1285 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1286 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1287
1288 ha->rsp_ring_index++;
1289 if (ha->rsp_ring_index == ha->response_q_length) {
1290 ha->rsp_ring_index = 0;
1291 ha->response_ring_ptr = ha->response_ring;
1292 } else {
1293 ha->response_ring_ptr++;
1294 }
1295
1296 if (pkt->entry_status != 0) {
1297 DEBUG3(printk(KERN_INFO
1298 "scsi(%ld): Process error entry.\n", ha->host_no));
1299
1300 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1301 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1302 wmb();
1303 continue;
1304 }
1305
1306 switch (pkt->entry_type) {
1307 case STATUS_TYPE:
1308 qla2x00_status_entry(ha, pkt);
1309 break;
1310 case STATUS_CONT_TYPE:
1311 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1312 break;
1313 case MS_IOCB_TYPE:
1314 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1315 break;
1316 default:
1317 /* Type Not Supported. */
1318 DEBUG4(printk(KERN_WARNING
1319 "scsi(%ld): Received unknown response pkt type %x "
1320 "entry status=%x.\n",
1321 ha->host_no, pkt->entry_type, pkt->entry_status));
1322 break;
1323 }
1324 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1325 wmb();
1326 }
1327
1328 /* Adjust ring index */
1329 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1330 }
1331
1332 /**
1333 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1334 * @irq:
1335 * @dev_id: SCSI driver HA context
1336 * @regs:
1337 *
1338 * Called by system whenever the host adapter generates an interrupt.
1339 *
1340 * Returns handled flag.
1341 */
1342 irqreturn_t
1343 qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1344 {
1345 scsi_qla_host_t *ha;
1346 struct device_reg_24xx __iomem *reg;
1347 int status;
1348 unsigned long flags;
1349 unsigned long iter;
1350 uint32_t stat;
1351 uint32_t hccr;
1352 uint16_t mb[4];
1353
1354 ha = (scsi_qla_host_t *) dev_id;
1355 if (!ha) {
1356 printk(KERN_INFO
1357 "%s(): NULL host pointer\n", __func__);
1358 return IRQ_NONE;
1359 }
1360
1361 reg = &ha->iobase->isp24;
1362 status = 0;
1363
1364 spin_lock_irqsave(&ha->hardware_lock, flags);
1365 for (iter = 50; iter--; ) {
1366 stat = RD_REG_DWORD(&reg->host_status);
1367 if (stat & HSRX_RISC_PAUSED) {
1368 hccr = RD_REG_DWORD(&reg->hccr);
1369
1370 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1371 "Dumping firmware!\n", hccr);
1372 qla24xx_fw_dump(ha, 1);
1373
1374 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1375 break;
1376 } else if ((stat & HSRX_RISC_INT) == 0)
1377 break;
1378
1379 switch (stat & 0xff) {
1380 case 0x1:
1381 case 0x2:
1382 case 0x10:
1383 case 0x11:
1384 qla24xx_mbx_completion(ha, MSW(stat));
1385 status |= MBX_INTERRUPT;
1386
1387 break;
1388 case 0x12:
1389 mb[0] = MSW(stat);
1390 mb[1] = RD_REG_WORD(&reg->mailbox1);
1391 mb[2] = RD_REG_WORD(&reg->mailbox2);
1392 mb[3] = RD_REG_WORD(&reg->mailbox3);
1393 qla2x00_async_event(ha, mb);
1394 break;
1395 case 0x13:
1396 qla24xx_process_response_queue(ha);
1397 break;
1398 default:
1399 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1400 "(%d).\n",
1401 ha->host_no, stat & 0xff));
1402 break;
1403 }
1404 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1405 RD_REG_DWORD_RELAXED(&reg->hccr);
1406 }
1407 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1408
1409 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1410 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1411 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1412
1413 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1414 up(&ha->mbx_intr_sem);
1415
1416 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1417 }
1418
1419 return IRQ_HANDLED;
1420 }
1421
1422 /**
1423 * qla24xx_ms_entry() - Process a Management Server entry.
1424 * @ha: SCSI driver HA context
1425 * @index: Response queue out pointer
1426 */
1427 static void
1428 qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1429 {
1430 srb_t *sp;
1431
1432 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1433 __func__, ha->host_no, pkt, pkt->handle));
1434
1435 DEBUG9(printk("%s: ct pkt dump:\n", __func__));
1436 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx)));
1437
1438 /* Validate handle. */
1439 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1440 sp = ha->outstanding_cmds[pkt->handle];
1441 else
1442 sp = NULL;
1443
1444 if (sp == NULL) {
1445 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1446 ha->host_no));
1447 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1448 ha->host_no));
1449 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1450 pkt->handle);
1451
1452 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1453 return;
1454 }
1455
1456 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1457 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1458
1459 /* Free outstanding command slot. */
1460 ha->outstanding_cmds[pkt->handle] = NULL;
1461
1462 qla2x00_sp_compl(ha, sp);
1463 }
1464
WRT350N Kernel Patches