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Merge branch 'upstream' of git://electric-eye.fr.zoreil.com/home/romieu/linux-2.6...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / qla2xxx / qla_isr.c
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
399 /* Update AEN queue. */
400 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
401
402 break;
403
404 case MBA_LOOP_UP: /* Loop Up Event */
405 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
406 link_speed = link_speeds[0];
407 ha->link_data_rate = LDR_1GB;
408 } else {
409 link_speed = link_speeds[LS_UNKNOWN];
410 if (mb[1] < 5)
411 link_speed = link_speeds[mb[1]];
412 ha->link_data_rate = mb[1];
413 }
414
415 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
416 ha->host_no, link_speed));
417 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
418 link_speed);
419
420 ha->flags.management_server_logged_in = 0;
421
422 /* Update AEN queue. */
423 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
424 break;
425
426 case MBA_LOOP_DOWN: /* Loop Down Event */
427 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
428 ha->host_no, mb[1]));
429 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
430
431 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
432 atomic_set(&ha->loop_state, LOOP_DOWN);
433 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
434 ha->device_flags |= DFLG_NO_CABLE;
435 qla2x00_mark_all_devices_lost(ha, 1);
436 }
437
438 ha->flags.management_server_logged_in = 0;
439 ha->link_data_rate = LDR_UNKNOWN;
440 if (ql2xfdmienable)
441 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
442
443 /* Update AEN queue. */
444 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
445 break;
446
447 case MBA_LIP_RESET: /* LIP reset occurred */
448 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
449 ha->host_no, mb[1]));
450 qla_printk(KERN_INFO, ha,
451 "LIP reset occured (%x).\n", mb[1]);
452
453 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
454 atomic_set(&ha->loop_state, LOOP_DOWN);
455 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
456 qla2x00_mark_all_devices_lost(ha, 1);
457 }
458
459 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
460
461 ha->operating_mode = LOOP;
462 ha->flags.management_server_logged_in = 0;
463
464 /* Update AEN queue. */
465 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
466
467 break;
468
469 case MBA_POINT_TO_POINT: /* Point-to-Point */
470 if (IS_QLA2100(ha))
471 break;
472
473 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
474 ha->host_no));
475
476 /*
477 * Until there's a transition from loop down to loop up, treat
478 * this as loop down only.
479 */
480 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
481 atomic_set(&ha->loop_state, LOOP_DOWN);
482 if (!atomic_read(&ha->loop_down_timer))
483 atomic_set(&ha->loop_down_timer,
484 LOOP_DOWN_TIME);
485 qla2x00_mark_all_devices_lost(ha, 1);
486 }
487
488 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
489 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
490 }
491 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
492 break;
493
494 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
495 if (IS_QLA2100(ha))
496 break;
497
498 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
499 "received.\n",
500 ha->host_no));
501 qla_printk(KERN_INFO, ha,
502 "Configuration change detected: value=%x.\n", mb[1]);
503
504 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
505 atomic_set(&ha->loop_state, LOOP_DOWN);
506 if (!atomic_read(&ha->loop_down_timer))
507 atomic_set(&ha->loop_down_timer,
508 LOOP_DOWN_TIME);
509 qla2x00_mark_all_devices_lost(ha, 1);
510 }
511
512 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
513 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
514 break;
515
516 case MBA_PORT_UPDATE: /* Port database update */
517 /*
518 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
519 * event etc. earlier indicating loop is down) then process
520 * it. Otherwise ignore it and Wait for RSCN to come in.
521 */
522 atomic_set(&ha->loop_down_timer, 0);
523 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
524 atomic_read(&ha->loop_state) != LOOP_DEAD) {
525 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
526 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
527 mb[2], mb[3]));
528 break;
529 }
530
531 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
532 ha->host_no));
533 DEBUG(printk(KERN_INFO
534 "scsi(%ld): Port database changed %04x %04x %04x.\n",
535 ha->host_no, mb[1], mb[2], mb[3]));
536
537 /*
538 * Mark all devices as missing so we will login again.
539 */
540 atomic_set(&ha->loop_state, LOOP_UP);
541
542 qla2x00_mark_all_devices_lost(ha, 1);
543
544 ha->flags.rscn_queue_overflow = 1;
545
546 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
547 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
548
549 /* Update AEN queue. */
550 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
551 break;
552
553 case MBA_RSCN_UPDATE: /* State Change Registration */
554 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
555 ha->host_no));
556 DEBUG(printk(KERN_INFO
557 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
558 ha->host_no, mb[1], mb[2]));
559
560 rscn_entry = (mb[1] << 16) | mb[2];
561 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
562 ha->d_id.b.al_pa;
563 if (rscn_entry == host_pid) {
564 DEBUG(printk(KERN_INFO
565 "scsi(%ld): Ignoring RSCN update to local host "
566 "port ID (%06x)\n",
567 ha->host_no, host_pid));
568 break;
569 }
570
571 rscn_queue_index = ha->rscn_in_ptr + 1;
572 if (rscn_queue_index == MAX_RSCN_COUNT)
573 rscn_queue_index = 0;
574 if (rscn_queue_index != ha->rscn_out_ptr) {
575 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
576 ha->rscn_in_ptr = rscn_queue_index;
577 } else {
578 ha->flags.rscn_queue_overflow = 1;
579 }
580
581 atomic_set(&ha->loop_state, LOOP_UPDATE);
582 atomic_set(&ha->loop_down_timer, 0);
583 ha->flags.management_server_logged_in = 0;
584
585 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
586 set_bit(RSCN_UPDATE, &ha->dpc_flags);
587
588 /* Update AEN queue. */
589 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
590 break;
591
592 /* case MBA_RIO_RESPONSE: */
593 case MBA_ZIO_RESPONSE:
594 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
595 ha->host_no));
596 DEBUG(printk(KERN_INFO
597 "scsi(%ld): [R|Z]IO update completion.\n",
598 ha->host_no));
599
600 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
601 qla24xx_process_response_queue(ha);
602 else
603 qla2x00_process_response_queue(ha);
604 break;
605
606 case MBA_DISCARD_RND_FRAME:
607 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
608 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
609 break;
610 }
611 }
612
613 /**
614 * qla2x00_process_completed_request() - Process a Fast Post response.
615 * @ha: SCSI driver HA context
616 * @index: SRB index
617 */
618 static void
619 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
620 {
621 srb_t *sp;
622
623 /* Validate handle. */
624 if (index >= MAX_OUTSTANDING_COMMANDS) {
625 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
626 ha->host_no, index));
627 qla_printk(KERN_WARNING, ha,
628 "Invalid SCSI completion handle %d.\n", index);
629
630 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
631 return;
632 }
633
634 sp = ha->outstanding_cmds[index];
635 if (sp) {
636 /* Free outstanding command slot. */
637 ha->outstanding_cmds[index] = NULL;
638
639 CMD_COMPL_STATUS(sp->cmd) = 0L;
640 CMD_SCSI_STATUS(sp->cmd) = 0L;
641
642 /* Save ISP completion status */
643 sp->cmd->result = DID_OK << 16;
644 qla2x00_sp_compl(ha, sp);
645 } else {
646 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
647 ha->host_no));
648 qla_printk(KERN_WARNING, ha,
649 "Invalid ISP SCSI completion handle\n");
650
651 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
652 }
653 }
654
655 /**
656 * qla2x00_process_response_queue() - Process response queue entries.
657 * @ha: SCSI driver HA context
658 */
659 void
660 qla2x00_process_response_queue(struct scsi_qla_host *ha)
661 {
662 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
663 sts_entry_t *pkt;
664 uint16_t handle_cnt;
665 uint16_t cnt;
666
667 if (!ha->flags.online)
668 return;
669
670 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
671 pkt = (sts_entry_t *)ha->response_ring_ptr;
672
673 ha->rsp_ring_index++;
674 if (ha->rsp_ring_index == ha->response_q_length) {
675 ha->rsp_ring_index = 0;
676 ha->response_ring_ptr = ha->response_ring;
677 } else {
678 ha->response_ring_ptr++;
679 }
680
681 if (pkt->entry_status != 0) {
682 DEBUG3(printk(KERN_INFO
683 "scsi(%ld): Process error entry.\n", ha->host_no));
684
685 qla2x00_error_entry(ha, pkt);
686 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
687 wmb();
688 continue;
689 }
690
691 switch (pkt->entry_type) {
692 case STATUS_TYPE:
693 qla2x00_status_entry(ha, pkt);
694 break;
695 case STATUS_TYPE_21:
696 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
697 for (cnt = 0; cnt < handle_cnt; cnt++) {
698 qla2x00_process_completed_request(ha,
699 ((sts21_entry_t *)pkt)->handle[cnt]);
700 }
701 break;
702 case STATUS_TYPE_22:
703 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
704 for (cnt = 0; cnt < handle_cnt; cnt++) {
705 qla2x00_process_completed_request(ha,
706 ((sts22_entry_t *)pkt)->handle[cnt]);
707 }
708 break;
709 case STATUS_CONT_TYPE:
710 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
711 break;
712 case MS_IOCB_TYPE:
713 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
714 break;
715 default:
716 /* Type Not Supported. */
717 DEBUG4(printk(KERN_WARNING
718 "scsi(%ld): Received unknown response pkt type %x "
719 "entry status=%x.\n",
720 ha->host_no, pkt->entry_type, pkt->entry_status));
721 break;
722 }
723 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
724 wmb();
725 }
726
727 /* Adjust ring index */
728 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
729 }
730
731 /**
732 * qla2x00_status_entry() - Process a Status IOCB entry.
733 * @ha: SCSI driver HA context
734 * @pkt: Entry pointer
735 */
736 static void
737 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
738 {
739 srb_t *sp;
740 fc_port_t *fcport;
741 struct scsi_cmnd *cp;
742 sts_entry_t *sts;
743 struct sts_entry_24xx *sts24;
744 uint16_t comp_status;
745 uint16_t scsi_status;
746 uint8_t lscsi_status;
747 int32_t resid;
748 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
749 uint8_t *rsp_info, *sense_data;
750
751 sts = (sts_entry_t *) pkt;
752 sts24 = (struct sts_entry_24xx *) pkt;
753 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
754 comp_status = le16_to_cpu(sts24->comp_status);
755 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
756 } else {
757 comp_status = le16_to_cpu(sts->comp_status);
758 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
759 }
760
761 /* Fast path completion. */
762 if (comp_status == CS_COMPLETE && scsi_status == 0) {
763 qla2x00_process_completed_request(ha, sts->handle);
764
765 return;
766 }
767
768 /* Validate handle. */
769 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
770 sp = ha->outstanding_cmds[sts->handle];
771 ha->outstanding_cmds[sts->handle] = NULL;
772 } else
773 sp = NULL;
774
775 if (sp == NULL) {
776 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
777 ha->host_no));
778 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
779
780 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
781 qla2xxx_wake_dpc(ha);
782 return;
783 }
784 cp = sp->cmd;
785 if (cp == NULL) {
786 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
787 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
788 qla_printk(KERN_WARNING, ha,
789 "Command is NULL: already returned to OS (sp=%p)\n", sp);
790
791 return;
792 }
793
794 lscsi_status = scsi_status & STATUS_MASK;
795 CMD_ENTRY_STATUS(cp) = sts->entry_status;
796 CMD_COMPL_STATUS(cp) = comp_status;
797 CMD_SCSI_STATUS(cp) = scsi_status;
798
799 fcport = sp->fcport;
800
801 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
802 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
803 sense_len = le32_to_cpu(sts24->sense_len);
804 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
805 resid_len = le32_to_cpu(sts24->rsp_residual_count);
806 fw_resid_len = le32_to_cpu(sts24->residual_len);
807 rsp_info = sts24->data;
808 sense_data = sts24->data;
809 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
810 } else {
811 sense_len = le16_to_cpu(sts->req_sense_length);
812 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
813 resid_len = le32_to_cpu(sts->residual_length);
814 rsp_info = sts->rsp_info;
815 sense_data = sts->req_sense_data;
816 }
817
818 /* Check for any FCP transport errors. */
819 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
820 /* Sense data lies beyond any FCP RESPONSE data. */
821 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
822 sense_data += rsp_info_len;
823 if (rsp_info_len > 3 && rsp_info[3]) {
824 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
825 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
826 "retrying command\n", ha->host_no,
827 cp->device->channel, cp->device->id,
828 cp->device->lun, rsp_info_len, rsp_info[0],
829 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
830 rsp_info[5], rsp_info[6], rsp_info[7]));
831
832 cp->result = DID_BUS_BUSY << 16;
833 qla2x00_sp_compl(ha, sp);
834 return;
835 }
836 }
837
838 /*
839 * Based on Host and scsi status generate status code for Linux
840 */
841 switch (comp_status) {
842 case CS_COMPLETE:
843 if (scsi_status == 0) {
844 cp->result = DID_OK << 16;
845 break;
846 }
847 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
848 resid = resid_len;
849 cp->resid = resid;
850 CMD_RESID_LEN(cp) = resid;
851
852 if (!lscsi_status &&
853 ((unsigned)(cp->request_bufflen - resid) <
854 cp->underflow)) {
855 qla_printk(KERN_INFO, ha,
856 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
857 "detected (%x of %x bytes)...returning "
858 "error status.\n", ha->host_no,
859 cp->device->channel, cp->device->id,
860 cp->device->lun, resid,
861 cp->request_bufflen);
862
863 cp->result = DID_ERROR << 16;
864 break;
865 }
866 }
867 cp->result = DID_OK << 16 | lscsi_status;
868
869 if (lscsi_status != SS_CHECK_CONDITION)
870 break;
871
872 /* Copy Sense Data into sense buffer. */
873 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
874
875 if (!(scsi_status & SS_SENSE_LEN_VALID))
876 break;
877
878 if (sense_len >= sizeof(cp->sense_buffer))
879 sense_len = sizeof(cp->sense_buffer);
880
881 CMD_ACTUAL_SNSLEN(cp) = sense_len;
882 sp->request_sense_length = sense_len;
883 sp->request_sense_ptr = cp->sense_buffer;
884
885 if (sp->request_sense_length > 32)
886 sense_len = 32;
887
888 memcpy(cp->sense_buffer, sense_data, sense_len);
889
890 sp->request_sense_ptr += sense_len;
891 sp->request_sense_length -= sense_len;
892 if (sp->request_sense_length != 0)
893 ha->status_srb = sp;
894
895 DEBUG5(printk("%s(): Check condition Sense data, "
896 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
897 ha->host_no, cp->device->channel, cp->device->id,
898 cp->device->lun, cp, cp->serial_number));
899 if (sense_len)
900 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
901 CMD_ACTUAL_SNSLEN(cp)));
902 break;
903
904 case CS_DATA_UNDERRUN:
905 resid = resid_len;
906 /* Use F/W calculated residual length. */
907 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
908 resid = fw_resid_len;
909
910 if (scsi_status & SS_RESIDUAL_UNDER) {
911 cp->resid = resid;
912 CMD_RESID_LEN(cp) = resid;
913 } else {
914 DEBUG2(printk(KERN_INFO
915 "scsi(%ld:%d:%d) UNDERRUN status detected "
916 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
917 "os_underflow=0x%x\n", ha->host_no,
918 cp->device->id, cp->device->lun, comp_status,
919 scsi_status, resid_len, resid, cp->cmnd[0],
920 cp->underflow));
921
922 }
923
924 /*
925 * Check to see if SCSI Status is non zero. If so report SCSI
926 * Status.
927 */
928 if (lscsi_status != 0) {
929 cp->result = DID_OK << 16 | lscsi_status;
930
931 if (lscsi_status != SS_CHECK_CONDITION)
932 break;
933
934 /* Copy Sense Data into sense buffer */
935 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
936
937 if (!(scsi_status & SS_SENSE_LEN_VALID))
938 break;
939
940 if (sense_len >= sizeof(cp->sense_buffer))
941 sense_len = sizeof(cp->sense_buffer);
942
943 CMD_ACTUAL_SNSLEN(cp) = sense_len;
944 sp->request_sense_length = sense_len;
945 sp->request_sense_ptr = cp->sense_buffer;
946
947 if (sp->request_sense_length > 32)
948 sense_len = 32;
949
950 memcpy(cp->sense_buffer, sense_data, sense_len);
951
952 sp->request_sense_ptr += sense_len;
953 sp->request_sense_length -= sense_len;
954 if (sp->request_sense_length != 0)
955 ha->status_srb = sp;
956
957 DEBUG5(printk("%s(): Check condition Sense data, "
958 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
959 __func__, ha->host_no, cp->device->channel,
960 cp->device->id, cp->device->lun, cp,
961 cp->serial_number));
962
963 if (sense_len)
964 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
965 CMD_ACTUAL_SNSLEN(cp)));
966 } else {
967 /*
968 * If RISC reports underrun and target does not report
969 * it then we must have a lost frame, so tell upper
970 * layer to retry it by reporting a bus busy.
971 */
972 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
973 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
974 "frame(s) detected (%x of %x bytes)..."
975 "retrying command.\n", ha->host_no,
976 cp->device->channel, cp->device->id,
977 cp->device->lun, resid,
978 cp->request_bufflen));
979
980 cp->result = DID_BUS_BUSY << 16;
981 break;
982 }
983
984 /* Handle mid-layer underflow */
985 if ((unsigned)(cp->request_bufflen - resid) <
986 cp->underflow) {
987 qla_printk(KERN_INFO, ha,
988 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
989 "detected (%x of %x bytes)...returning "
990 "error status.\n", ha->host_no,
991 cp->device->channel, cp->device->id,
992 cp->device->lun, resid,
993 cp->request_bufflen);
994
995 cp->result = DID_ERROR << 16;
996 break;
997 }
998
999 /* Everybody online, looking good... */
1000 cp->result = DID_OK << 16;
1001 }
1002 break;
1003
1004 case CS_DATA_OVERRUN:
1005 DEBUG2(printk(KERN_INFO
1006 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1007 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1008 scsi_status));
1009 DEBUG2(printk(KERN_INFO
1010 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1011 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1012 cp->cmnd[4], cp->cmnd[5]));
1013 DEBUG2(printk(KERN_INFO
1014 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1015 "status!\n",
1016 cp->serial_number, cp->request_bufflen, resid_len));
1017
1018 cp->result = DID_ERROR << 16;
1019 break;
1020
1021 case CS_PORT_LOGGED_OUT:
1022 case CS_PORT_CONFIG_CHG:
1023 case CS_PORT_BUSY:
1024 case CS_INCOMPLETE:
1025 case CS_PORT_UNAVAILABLE:
1026 /*
1027 * If the port is in Target Down state, return all IOs for this
1028 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1029 * retry_queue.
1030 */
1031 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1032 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1033 ha->host_no, cp->device->id, cp->device->lun,
1034 cp->serial_number, comp_status,
1035 atomic_read(&fcport->state)));
1036
1037 cp->result = DID_BUS_BUSY << 16;
1038 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1039 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1040 }
1041 break;
1042
1043 case CS_RESET:
1044 DEBUG2(printk(KERN_INFO
1045 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1046 ha->host_no, comp_status, scsi_status));
1047
1048 cp->result = DID_RESET << 16;
1049 break;
1050
1051 case CS_ABORTED:
1052 /*
1053 * hv2.19.12 - DID_ABORT does not retry the request if we
1054 * aborted this request then abort otherwise it must be a
1055 * reset.
1056 */
1057 DEBUG2(printk(KERN_INFO
1058 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1059 ha->host_no, comp_status, scsi_status));
1060
1061 cp->result = DID_RESET << 16;
1062 break;
1063
1064 case CS_TIMEOUT:
1065 cp->result = DID_BUS_BUSY << 16;
1066
1067 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1068 DEBUG2(printk(KERN_INFO
1069 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1070 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1071 cp->device->id, cp->device->lun, comp_status,
1072 scsi_status));
1073 break;
1074 }
1075 DEBUG2(printk(KERN_INFO
1076 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1077 "sflags=%x.\n", ha->host_no, cp->device->channel,
1078 cp->device->id, cp->device->lun, comp_status, scsi_status,
1079 le16_to_cpu(sts->status_flags)));
1080
1081 /* Check to see if logout occurred. */
1082 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1083 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1084 break;
1085
1086 case CS_QUEUE_FULL:
1087 DEBUG2(printk(KERN_INFO
1088 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1089 ha->host_no, comp_status, scsi_status));
1090
1091 /* SCSI Mid-Layer handles device queue full */
1092
1093 cp->result = DID_OK << 16 | lscsi_status;
1094
1095 break;
1096
1097 default:
1098 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1099 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1100 qla_printk(KERN_INFO, ha,
1101 "Unknown status detected 0x%x-0x%x.\n",
1102 comp_status, scsi_status);
1103
1104 cp->result = DID_ERROR << 16;
1105 break;
1106 }
1107
1108 /* Place command on done queue. */
1109 if (ha->status_srb == NULL)
1110 qla2x00_sp_compl(ha, sp);
1111 }
1112
1113 /**
1114 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1115 * @ha: SCSI driver HA context
1116 * @pkt: Entry pointer
1117 *
1118 * Extended sense data.
1119 */
1120 static void
1121 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1122 {
1123 uint8_t sense_sz = 0;
1124 srb_t *sp = ha->status_srb;
1125 struct scsi_cmnd *cp;
1126
1127 if (sp != NULL && sp->request_sense_length != 0) {
1128 cp = sp->cmd;
1129 if (cp == NULL) {
1130 DEBUG2(printk("%s(): Cmd already returned back to OS "
1131 "sp=%p.\n", __func__, sp));
1132 qla_printk(KERN_INFO, ha,
1133 "cmd is NULL: already returned to OS (sp=%p)\n",
1134 sp);
1135
1136 ha->status_srb = NULL;
1137 return;
1138 }
1139
1140 if (sp->request_sense_length > sizeof(pkt->data)) {
1141 sense_sz = sizeof(pkt->data);
1142 } else {
1143 sense_sz = sp->request_sense_length;
1144 }
1145
1146 /* Move sense data. */
1147 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
1148 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1149 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1150 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1151
1152 sp->request_sense_ptr += sense_sz;
1153 sp->request_sense_length -= sense_sz;
1154
1155 /* Place command on done queue. */
1156 if (sp->request_sense_length == 0) {
1157 ha->status_srb = NULL;
1158 qla2x00_sp_compl(ha, sp);
1159 }
1160 }
1161 }
1162
1163 /**
1164 * qla2x00_error_entry() - Process an error entry.
1165 * @ha: SCSI driver HA context
1166 * @pkt: Entry pointer
1167 */
1168 static void
1169 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1170 {
1171 srb_t *sp;
1172
1173 #if defined(QL_DEBUG_LEVEL_2)
1174 if (pkt->entry_status & RF_INV_E_ORDER)
1175 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1176 else if (pkt->entry_status & RF_INV_E_COUNT)
1177 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1178 else if (pkt->entry_status & RF_INV_E_PARAM)
1179 qla_printk(KERN_ERR, ha,
1180 "%s: Invalid Entry Parameter\n", __func__);
1181 else if (pkt->entry_status & RF_INV_E_TYPE)
1182 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1183 else if (pkt->entry_status & RF_BUSY)
1184 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1185 else
1186 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1187 #endif
1188
1189 /* Validate handle. */
1190 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1191 sp = ha->outstanding_cmds[pkt->handle];
1192 else
1193 sp = NULL;
1194
1195 if (sp) {
1196 /* Free outstanding command slot. */
1197 ha->outstanding_cmds[pkt->handle] = NULL;
1198
1199 /* Bad payload or header */
1200 if (pkt->entry_status &
1201 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1202 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1203 sp->cmd->result = DID_ERROR << 16;
1204 } else if (pkt->entry_status & RF_BUSY) {
1205 sp->cmd->result = DID_BUS_BUSY << 16;
1206 } else {
1207 sp->cmd->result = DID_ERROR << 16;
1208 }
1209 qla2x00_sp_compl(ha, sp);
1210
1211 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1212 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1213 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1214 ha->host_no));
1215 qla_printk(KERN_WARNING, ha,
1216 "Error entry - invalid handle\n");
1217
1218 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1219 qla2xxx_wake_dpc(ha);
1220 }
1221 }
1222
1223 /**
1224 * qla2x00_ms_entry() - Process a Management Server entry.
1225 * @ha: SCSI driver HA context
1226 * @index: Response queue out pointer
1227 */
1228 static void
1229 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1230 {
1231 srb_t *sp;
1232
1233 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1234 __func__, ha->host_no, pkt, pkt->handle1));
1235
1236 /* Validate handle. */
1237 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1238 sp = ha->outstanding_cmds[pkt->handle1];
1239 else
1240 sp = NULL;
1241
1242 if (sp == NULL) {
1243 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1244 ha->host_no));
1245 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1246
1247 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1248 return;
1249 }
1250
1251 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1252 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1253
1254 /* Free outstanding command slot. */
1255 ha->outstanding_cmds[pkt->handle1] = NULL;
1256
1257 qla2x00_sp_compl(ha, sp);
1258 }
1259
1260
1261 /**
1262 * qla24xx_mbx_completion() - Process mailbox command completions.
1263 * @ha: SCSI driver HA context
1264 * @mb0: Mailbox0 register
1265 */
1266 static void
1267 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1268 {
1269 uint16_t cnt;
1270 uint16_t __iomem *wptr;
1271 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1272
1273 /* Load return mailbox registers. */
1274 ha->flags.mbox_int = 1;
1275 ha->mailbox_out[0] = mb0;
1276 wptr = (uint16_t __iomem *)&reg->mailbox1;
1277
1278 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1279 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1280 wptr++;
1281 }
1282
1283 if (ha->mcp) {
1284 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1285 __func__, ha->host_no, ha->mcp->mb[0]));
1286 } else {
1287 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1288 __func__, ha->host_no));
1289 }
1290 }
1291
1292 /**
1293 * qla24xx_process_response_queue() - Process response queue entries.
1294 * @ha: SCSI driver HA context
1295 */
1296 void
1297 qla24xx_process_response_queue(struct scsi_qla_host *ha)
1298 {
1299 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1300 struct sts_entry_24xx *pkt;
1301
1302 if (!ha->flags.online)
1303 return;
1304
1305 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1306 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1307
1308 ha->rsp_ring_index++;
1309 if (ha->rsp_ring_index == ha->response_q_length) {
1310 ha->rsp_ring_index = 0;
1311 ha->response_ring_ptr = ha->response_ring;
1312 } else {
1313 ha->response_ring_ptr++;
1314 }
1315
1316 if (pkt->entry_status != 0) {
1317 DEBUG3(printk(KERN_INFO
1318 "scsi(%ld): Process error entry.\n", ha->host_no));
1319
1320 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1321 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1322 wmb();
1323 continue;
1324 }
1325
1326 switch (pkt->entry_type) {
1327 case STATUS_TYPE:
1328 qla2x00_status_entry(ha, pkt);
1329 break;
1330 case STATUS_CONT_TYPE:
1331 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1332 break;
1333 case MS_IOCB_TYPE:
1334 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1335 break;
1336 default:
1337 /* Type Not Supported. */
1338 DEBUG4(printk(KERN_WARNING
1339 "scsi(%ld): Received unknown response pkt type %x "
1340 "entry status=%x.\n",
1341 ha->host_no, pkt->entry_type, pkt->entry_status));
1342 break;
1343 }
1344 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1345 wmb();
1346 }
1347
1348 /* Adjust ring index */
1349 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1350 }
1351
1352 /**
1353 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1354 * @irq:
1355 * @dev_id: SCSI driver HA context
1356 * @regs:
1357 *
1358 * Called by system whenever the host adapter generates an interrupt.
1359 *
1360 * Returns handled flag.
1361 */
1362 irqreturn_t
1363 qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1364 {
1365 scsi_qla_host_t *ha;
1366 struct device_reg_24xx __iomem *reg;
1367 int status;
1368 unsigned long flags;
1369 unsigned long iter;
1370 uint32_t stat;
1371 uint32_t hccr;
1372 uint16_t mb[4];
1373
1374 ha = (scsi_qla_host_t *) dev_id;
1375 if (!ha) {
1376 printk(KERN_INFO
1377 "%s(): NULL host pointer\n", __func__);
1378 return IRQ_NONE;
1379 }
1380
1381 reg = &ha->iobase->isp24;
1382 status = 0;
1383
1384 spin_lock_irqsave(&ha->hardware_lock, flags);
1385 for (iter = 50; iter--; ) {
1386 stat = RD_REG_DWORD(&reg->host_status);
1387 if (stat & HSRX_RISC_PAUSED) {
1388 hccr = RD_REG_DWORD(&reg->hccr);
1389
1390 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1391 "Dumping firmware!\n", hccr);
1392 qla24xx_fw_dump(ha, 1);
1393
1394 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1395 break;
1396 } else if ((stat & HSRX_RISC_INT) == 0)
1397 break;
1398
1399 switch (stat & 0xff) {
1400 case 0x1:
1401 case 0x2:
1402 case 0x10:
1403 case 0x11:
1404 qla24xx_mbx_completion(ha, MSW(stat));
1405 status |= MBX_INTERRUPT;
1406
1407 break;
1408 case 0x12:
1409 mb[0] = MSW(stat);
1410 mb[1] = RD_REG_WORD(&reg->mailbox1);
1411 mb[2] = RD_REG_WORD(&reg->mailbox2);
1412 mb[3] = RD_REG_WORD(&reg->mailbox3);
1413 qla2x00_async_event(ha, mb);
1414 break;
1415 case 0x13:
1416 qla24xx_process_response_queue(ha);
1417 break;
1418 default:
1419 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1420 "(%d).\n",
1421 ha->host_no, stat & 0xff));
1422 break;
1423 }
1424 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1425 RD_REG_DWORD_RELAXED(&reg->hccr);
1426 }
1427 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1428
1429 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1430 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1431 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1432
1433 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1434 up(&ha->mbx_intr_sem);
1435
1436 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1437 }
1438
1439 return IRQ_HANDLED;
1440 }
1441
1442 /**
1443 * qla24xx_ms_entry() - Process a Management Server entry.
1444 * @ha: SCSI driver HA context
1445 * @index: Response queue out pointer
1446 */
1447 static void
1448 qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1449 {
1450 srb_t *sp;
1451
1452 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1453 __func__, ha->host_no, pkt, pkt->handle));
1454
1455 DEBUG9(printk("%s: ct pkt dump:\n", __func__);)
1456 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx));)
1457
1458 /* Validate handle. */
1459 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1460 sp = ha->outstanding_cmds[pkt->handle];
1461 else
1462 sp = NULL;
1463
1464 if (sp == NULL) {
1465 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1466 ha->host_no));
1467 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1468 ha->host_no));
1469 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1470 pkt->handle);
1471
1472 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1473 return;
1474 }
1475
1476 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1477 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1478
1479 /* Free outstanding command slot. */
1480 ha->outstanding_cmds[pkt->handle] = NULL;
1481
1482 qla2x00_sp_compl(ha, sp);
1483 }
1484
kernel source for telekom puls (alcatel/mediatek)