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[SCSI] qla2xxx: Perform implicit LOGO during fabric logout request.
[linux-2.6/verdex.git] / drivers / scsi / qla2xxx / qla_isr.c
blob6e19769b46d259e93e57d859a880b0ad2b9a1dfe
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 #include <scsi/scsi_tcq.h>
10
11 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
12 static void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
13 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
14 static void qla2x00_status_entry(scsi_qla_host_t *, void *);
15 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
16 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
17 static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
18
19 static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
20
21 /**
22 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
23 * @irq:
24 * @dev_id: SCSI driver HA context
25 *
26 * Called by system whenever the host adapter generates an interrupt.
27 *
28 * Returns handled flag.
29 */
30 irqreturn_t
31 qla2100_intr_handler(int irq, void *dev_id)
32 {
33 scsi_qla_host_t *ha;
34 struct device_reg_2xxx __iomem *reg;
35 int status;
36 unsigned long flags;
37 unsigned long iter;
38 uint16_t mb[4];
39
40 ha = (scsi_qla_host_t *) dev_id;
41 if (!ha) {
42 printk(KERN_INFO
43 "%s(): NULL host pointer\n", __func__);
44 return (IRQ_NONE);
45 }
46
47 reg = &ha->iobase->isp;
48 status = 0;
49
50 spin_lock_irqsave(&ha->hardware_lock, flags);
51 for (iter = 50; iter--; ) {
52 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
53 break;
54
55 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
56 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
57 RD_REG_WORD(&reg->hccr);
58
59 /* Get mailbox data. */
60 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
61 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
62 qla2x00_mbx_completion(ha, mb[0]);
63 status |= MBX_INTERRUPT;
64 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
65 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
66 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
67 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
68 qla2x00_async_event(ha, mb);
69 } else {
70 /*EMPTY*/
71 DEBUG2(printk("scsi(%ld): Unrecognized "
72 "interrupt type (%d).\n",
73 ha->host_no, mb[0]));
74 }
75 /* Release mailbox registers. */
76 WRT_REG_WORD(&reg->semaphore, 0);
77 RD_REG_WORD(&reg->semaphore);
78 } else {
79 qla2x00_process_response_queue(ha);
80
81 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
82 RD_REG_WORD(&reg->hccr);
83 }
84 }
85 spin_unlock_irqrestore(&ha->hardware_lock, flags);
86
87 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
88 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
89 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
90
91 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
92 up(&ha->mbx_intr_sem);
93
94 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
95 }
96
97 return (IRQ_HANDLED);
98 }
99
100 /**
101 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
102 * @irq:
103 * @dev_id: SCSI driver HA context
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)
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 = PORT_SPEED_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 = PORT_SPEED_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 case MBA_TRACE_NOTIFICATION:
592 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
593 ha->host_no, mb[1], mb[2]));
594 break;
595 }
596 }
597
598 static void
599 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
600 {
601 fc_port_t *fcport = data;
602
603 if (fcport->ha->max_q_depth <= sdev->queue_depth)
604 return;
605
606 if (sdev->ordered_tags)
607 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
608 sdev->queue_depth + 1);
609 else
610 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
611 sdev->queue_depth + 1);
612
613 fcport->last_ramp_up = jiffies;
614
615 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
616 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
617 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
618 sdev->queue_depth));
619 }
620
621 static void
622 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
623 {
624 fc_port_t *fcport = data;
625
626 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
627 return;
628
629 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
630 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
631 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
632 sdev->queue_depth));
633 }
634
635 static inline void
636 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp)
637 {
638 fc_port_t *fcport;
639 struct scsi_device *sdev;
640
641 sdev = sp->cmd->device;
642 if (sdev->queue_depth >= ha->max_q_depth)
643 return;
644
645 fcport = sp->fcport;
646 if (time_before(jiffies,
647 fcport->last_ramp_up + ql2xqfullrampup * HZ))
648 return;
649 if (time_before(jiffies,
650 fcport->last_queue_full + ql2xqfullrampup * HZ))
651 return;
652
653 starget_for_each_device(sdev->sdev_target, fcport,
654 qla2x00_adjust_sdev_qdepth_up);
655 }
656
657 /**
658 * qla2x00_process_completed_request() - Process a Fast Post response.
659 * @ha: SCSI driver HA context
660 * @index: SRB index
661 */
662 static void
663 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
664 {
665 srb_t *sp;
666
667 /* Validate handle. */
668 if (index >= MAX_OUTSTANDING_COMMANDS) {
669 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
670 ha->host_no, index));
671 qla_printk(KERN_WARNING, ha,
672 "Invalid SCSI completion handle %d.\n", index);
673
674 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
675 return;
676 }
677
678 sp = ha->outstanding_cmds[index];
679 if (sp) {
680 /* Free outstanding command slot. */
681 ha->outstanding_cmds[index] = NULL;
682
683 CMD_COMPL_STATUS(sp->cmd) = 0L;
684 CMD_SCSI_STATUS(sp->cmd) = 0L;
685
686 /* Save ISP completion status */
687 sp->cmd->result = DID_OK << 16;
688
689 qla2x00_ramp_up_queue_depth(ha, sp);
690 qla2x00_sp_compl(ha, sp);
691 } else {
692 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
693 ha->host_no));
694 qla_printk(KERN_WARNING, ha,
695 "Invalid ISP SCSI completion handle\n");
696
697 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
698 }
699 }
700
701 /**
702 * qla2x00_process_response_queue() - Process response queue entries.
703 * @ha: SCSI driver HA context
704 */
705 void
706 qla2x00_process_response_queue(struct scsi_qla_host *ha)
707 {
708 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
709 sts_entry_t *pkt;
710 uint16_t handle_cnt;
711 uint16_t cnt;
712
713 if (!ha->flags.online)
714 return;
715
716 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
717 pkt = (sts_entry_t *)ha->response_ring_ptr;
718
719 ha->rsp_ring_index++;
720 if (ha->rsp_ring_index == ha->response_q_length) {
721 ha->rsp_ring_index = 0;
722 ha->response_ring_ptr = ha->response_ring;
723 } else {
724 ha->response_ring_ptr++;
725 }
726
727 if (pkt->entry_status != 0) {
728 DEBUG3(printk(KERN_INFO
729 "scsi(%ld): Process error entry.\n", ha->host_no));
730
731 qla2x00_error_entry(ha, pkt);
732 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
733 wmb();
734 continue;
735 }
736
737 switch (pkt->entry_type) {
738 case STATUS_TYPE:
739 qla2x00_status_entry(ha, pkt);
740 break;
741 case STATUS_TYPE_21:
742 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
743 for (cnt = 0; cnt < handle_cnt; cnt++) {
744 qla2x00_process_completed_request(ha,
745 ((sts21_entry_t *)pkt)->handle[cnt]);
746 }
747 break;
748 case STATUS_TYPE_22:
749 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
750 for (cnt = 0; cnt < handle_cnt; cnt++) {
751 qla2x00_process_completed_request(ha,
752 ((sts22_entry_t *)pkt)->handle[cnt]);
753 }
754 break;
755 case STATUS_CONT_TYPE:
756 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
757 break;
758 case MS_IOCB_TYPE:
759 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
760 break;
761 default:
762 /* Type Not Supported. */
763 DEBUG4(printk(KERN_WARNING
764 "scsi(%ld): Received unknown response pkt type %x "
765 "entry status=%x.\n",
766 ha->host_no, pkt->entry_type, pkt->entry_status));
767 break;
768 }
769 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
770 wmb();
771 }
772
773 /* Adjust ring index */
774 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
775 }
776
777 /**
778 * qla2x00_status_entry() - Process a Status IOCB entry.
779 * @ha: SCSI driver HA context
780 * @pkt: Entry pointer
781 */
782 static void
783 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
784 {
785 srb_t *sp;
786 fc_port_t *fcport;
787 struct scsi_cmnd *cp;
788 sts_entry_t *sts;
789 struct sts_entry_24xx *sts24;
790 uint16_t comp_status;
791 uint16_t scsi_status;
792 uint8_t lscsi_status;
793 int32_t resid;
794 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
795 uint8_t *rsp_info, *sense_data;
796
797 sts = (sts_entry_t *) pkt;
798 sts24 = (struct sts_entry_24xx *) pkt;
799 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
800 comp_status = le16_to_cpu(sts24->comp_status);
801 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
802 } else {
803 comp_status = le16_to_cpu(sts->comp_status);
804 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
805 }
806
807 /* Fast path completion. */
808 if (comp_status == CS_COMPLETE && scsi_status == 0) {
809 qla2x00_process_completed_request(ha, sts->handle);
810
811 return;
812 }
813
814 /* Validate handle. */
815 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
816 sp = ha->outstanding_cmds[sts->handle];
817 ha->outstanding_cmds[sts->handle] = NULL;
818 } else
819 sp = NULL;
820
821 if (sp == NULL) {
822 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
823 ha->host_no));
824 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
825
826 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
827 qla2xxx_wake_dpc(ha);
828 return;
829 }
830 cp = sp->cmd;
831 if (cp == NULL) {
832 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
833 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
834 qla_printk(KERN_WARNING, ha,
835 "Command is NULL: already returned to OS (sp=%p)\n", sp);
836
837 return;
838 }
839
840 lscsi_status = scsi_status & STATUS_MASK;
841 CMD_ENTRY_STATUS(cp) = sts->entry_status;
842 CMD_COMPL_STATUS(cp) = comp_status;
843 CMD_SCSI_STATUS(cp) = scsi_status;
844
845 fcport = sp->fcport;
846
847 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
848 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
849 sense_len = le32_to_cpu(sts24->sense_len);
850 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
851 resid_len = le32_to_cpu(sts24->rsp_residual_count);
852 fw_resid_len = le32_to_cpu(sts24->residual_len);
853 rsp_info = sts24->data;
854 sense_data = sts24->data;
855 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
856 } else {
857 sense_len = le16_to_cpu(sts->req_sense_length);
858 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
859 resid_len = le32_to_cpu(sts->residual_length);
860 rsp_info = sts->rsp_info;
861 sense_data = sts->req_sense_data;
862 }
863
864 /* Check for any FCP transport errors. */
865 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
866 /* Sense data lies beyond any FCP RESPONSE data. */
867 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
868 sense_data += rsp_info_len;
869 if (rsp_info_len > 3 && rsp_info[3]) {
870 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
871 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
872 "retrying command\n", ha->host_no,
873 cp->device->channel, cp->device->id,
874 cp->device->lun, rsp_info_len, rsp_info[0],
875 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
876 rsp_info[5], rsp_info[6], rsp_info[7]));
877
878 cp->result = DID_BUS_BUSY << 16;
879 qla2x00_sp_compl(ha, sp);
880 return;
881 }
882 }
883
884 /*
885 * Based on Host and scsi status generate status code for Linux
886 */
887 switch (comp_status) {
888 case CS_COMPLETE:
889 case CS_QUEUE_FULL:
890 if (scsi_status == 0) {
891 cp->result = DID_OK << 16;
892 break;
893 }
894 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
895 resid = resid_len;
896 cp->resid = resid;
897 CMD_RESID_LEN(cp) = resid;
898
899 if (!lscsi_status &&
900 ((unsigned)(cp->request_bufflen - resid) <
901 cp->underflow)) {
902 qla_printk(KERN_INFO, ha,
903 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
904 "detected (%x of %x bytes)...returning "
905 "error status.\n", ha->host_no,
906 cp->device->channel, cp->device->id,
907 cp->device->lun, resid,
908 cp->request_bufflen);
909
910 cp->result = DID_ERROR << 16;
911 break;
912 }
913 }
914 cp->result = DID_OK << 16 | lscsi_status;
915
916 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
917 DEBUG2(printk(KERN_INFO
918 "scsi(%ld): QUEUE FULL status detected "
919 "0x%x-0x%x.\n", ha->host_no, comp_status,
920 scsi_status));
921
922 /* Adjust queue depth for all luns on the port. */
923 fcport->last_queue_full = jiffies;
924 starget_for_each_device(cp->device->sdev_target,
925 fcport, qla2x00_adjust_sdev_qdepth_down);
926 break;
927 }
928 if (lscsi_status != SS_CHECK_CONDITION)
929 break;
930
931 /* Copy Sense Data into sense buffer. */
932 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
933
934 if (!(scsi_status & SS_SENSE_LEN_VALID))
935 break;
936
937 if (sense_len >= sizeof(cp->sense_buffer))
938 sense_len = sizeof(cp->sense_buffer);
939
940 CMD_ACTUAL_SNSLEN(cp) = sense_len;
941 sp->request_sense_length = sense_len;
942 sp->request_sense_ptr = cp->sense_buffer;
943
944 if (sp->request_sense_length > 32)
945 sense_len = 32;
946
947 memcpy(cp->sense_buffer, sense_data, sense_len);
948
949 sp->request_sense_ptr += sense_len;
950 sp->request_sense_length -= sense_len;
951 if (sp->request_sense_length != 0)
952 ha->status_srb = sp;
953
954 DEBUG5(printk("%s(): Check condition Sense data, "
955 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
956 ha->host_no, cp->device->channel, cp->device->id,
957 cp->device->lun, cp, cp->serial_number));
958 if (sense_len)
959 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
960 CMD_ACTUAL_SNSLEN(cp)));
961 break;
962
963 case CS_DATA_UNDERRUN:
964 resid = resid_len;
965 /* Use F/W calculated residual length. */
966 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
967 resid = fw_resid_len;
968
969 if (scsi_status & SS_RESIDUAL_UNDER) {
970 cp->resid = resid;
971 CMD_RESID_LEN(cp) = resid;
972 } else {
973 DEBUG2(printk(KERN_INFO
974 "scsi(%ld:%d:%d) UNDERRUN status detected "
975 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
976 "os_underflow=0x%x\n", ha->host_no,
977 cp->device->id, cp->device->lun, comp_status,
978 scsi_status, resid_len, resid, cp->cmnd[0],
979 cp->underflow));
980
981 }
982
983 /*
984 * Check to see if SCSI Status is non zero. If so report SCSI
985 * Status.
986 */
987 if (lscsi_status != 0) {
988 cp->result = DID_OK << 16 | lscsi_status;
989
990 if (lscsi_status != SS_CHECK_CONDITION)
991 break;
992
993 /* Copy Sense Data into sense buffer */
994 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
995
996 if (!(scsi_status & SS_SENSE_LEN_VALID))
997 break;
998
999 if (sense_len >= sizeof(cp->sense_buffer))
1000 sense_len = sizeof(cp->sense_buffer);
1001
1002 CMD_ACTUAL_SNSLEN(cp) = sense_len;
1003 sp->request_sense_length = sense_len;
1004 sp->request_sense_ptr = cp->sense_buffer;
1005
1006 if (sp->request_sense_length > 32)
1007 sense_len = 32;
1008
1009 memcpy(cp->sense_buffer, sense_data, sense_len);
1010
1011 sp->request_sense_ptr += sense_len;
1012 sp->request_sense_length -= sense_len;
1013 if (sp->request_sense_length != 0)
1014 ha->status_srb = sp;
1015
1016 DEBUG5(printk("%s(): Check condition Sense data, "
1017 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1018 __func__, ha->host_no, cp->device->channel,
1019 cp->device->id, cp->device->lun, cp,
1020 cp->serial_number));
1021
1022 if (sense_len)
1023 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1024 CMD_ACTUAL_SNSLEN(cp)));
1025 } else {
1026 /*
1027 * If RISC reports underrun and target does not report
1028 * it then we must have a lost frame, so tell upper
1029 * layer to retry it by reporting a bus busy.
1030 */
1031 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1032 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1033 "frame(s) detected (%x of %x bytes)..."
1034 "retrying command.\n", ha->host_no,
1035 cp->device->channel, cp->device->id,
1036 cp->device->lun, resid,
1037 cp->request_bufflen));
1038
1039 cp->result = DID_BUS_BUSY << 16;
1040 break;
1041 }
1042
1043 /* Handle mid-layer underflow */
1044 if ((unsigned)(cp->request_bufflen - resid) <
1045 cp->underflow) {
1046 qla_printk(KERN_INFO, ha,
1047 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1048 "detected (%x of %x bytes)...returning "
1049 "error status.\n", ha->host_no,
1050 cp->device->channel, cp->device->id,
1051 cp->device->lun, resid,
1052 cp->request_bufflen);
1053
1054 cp->result = DID_ERROR << 16;
1055 break;
1056 }
1057
1058 /* Everybody online, looking good... */
1059 cp->result = DID_OK << 16;
1060 }
1061 break;
1062
1063 case CS_DATA_OVERRUN:
1064 DEBUG2(printk(KERN_INFO
1065 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1066 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1067 scsi_status));
1068 DEBUG2(printk(KERN_INFO
1069 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1070 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1071 cp->cmnd[4], cp->cmnd[5]));
1072 DEBUG2(printk(KERN_INFO
1073 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1074 "status!\n",
1075 cp->serial_number, cp->request_bufflen, resid_len));
1076
1077 cp->result = DID_ERROR << 16;
1078 break;
1079
1080 case CS_PORT_LOGGED_OUT:
1081 case CS_PORT_CONFIG_CHG:
1082 case CS_PORT_BUSY:
1083 case CS_INCOMPLETE:
1084 case CS_PORT_UNAVAILABLE:
1085 /*
1086 * If the port is in Target Down state, return all IOs for this
1087 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1088 * retry_queue.
1089 */
1090 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1091 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1092 ha->host_no, cp->device->id, cp->device->lun,
1093 cp->serial_number, comp_status,
1094 atomic_read(&fcport->state)));
1095
1096 cp->result = DID_BUS_BUSY << 16;
1097 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1098 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1099 }
1100 break;
1101
1102 case CS_RESET:
1103 DEBUG2(printk(KERN_INFO
1104 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1105 ha->host_no, comp_status, scsi_status));
1106
1107 cp->result = DID_RESET << 16;
1108 break;
1109
1110 case CS_ABORTED:
1111 /*
1112 * hv2.19.12 - DID_ABORT does not retry the request if we
1113 * aborted this request then abort otherwise it must be a
1114 * reset.
1115 */
1116 DEBUG2(printk(KERN_INFO
1117 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1118 ha->host_no, comp_status, scsi_status));
1119
1120 cp->result = DID_RESET << 16;
1121 break;
1122
1123 case CS_TIMEOUT:
1124 cp->result = DID_BUS_BUSY << 16;
1125
1126 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
1127 DEBUG2(printk(KERN_INFO
1128 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1129 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1130 cp->device->id, cp->device->lun, comp_status,
1131 scsi_status));
1132 break;
1133 }
1134 DEBUG2(printk(KERN_INFO
1135 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1136 "sflags=%x.\n", ha->host_no, cp->device->channel,
1137 cp->device->id, cp->device->lun, comp_status, scsi_status,
1138 le16_to_cpu(sts->status_flags)));
1139
1140 /* Check to see if logout occurred. */
1141 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1142 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1143 break;
1144
1145 default:
1146 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1147 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1148 qla_printk(KERN_INFO, ha,
1149 "Unknown status detected 0x%x-0x%x.\n",
1150 comp_status, scsi_status);
1151
1152 cp->result = DID_ERROR << 16;
1153 break;
1154 }
1155
1156 /* Place command on done queue. */
1157 if (ha->status_srb == NULL)
1158 qla2x00_sp_compl(ha, sp);
1159 }
1160
1161 /**
1162 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1163 * @ha: SCSI driver HA context
1164 * @pkt: Entry pointer
1165 *
1166 * Extended sense data.
1167 */
1168 static void
1169 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1170 {
1171 uint8_t sense_sz = 0;
1172 srb_t *sp = ha->status_srb;
1173 struct scsi_cmnd *cp;
1174
1175 if (sp != NULL && sp->request_sense_length != 0) {
1176 cp = sp->cmd;
1177 if (cp == NULL) {
1178 DEBUG2(printk("%s(): Cmd already returned back to OS "
1179 "sp=%p.\n", __func__, sp));
1180 qla_printk(KERN_INFO, ha,
1181 "cmd is NULL: already returned to OS (sp=%p)\n",
1182 sp);
1183
1184 ha->status_srb = NULL;
1185 return;
1186 }
1187
1188 if (sp->request_sense_length > sizeof(pkt->data)) {
1189 sense_sz = sizeof(pkt->data);
1190 } else {
1191 sense_sz = sp->request_sense_length;
1192 }
1193
1194 /* Move sense data. */
1195 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
1196 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1197 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1198 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1199
1200 sp->request_sense_ptr += sense_sz;
1201 sp->request_sense_length -= sense_sz;
1202
1203 /* Place command on done queue. */
1204 if (sp->request_sense_length == 0) {
1205 ha->status_srb = NULL;
1206 qla2x00_sp_compl(ha, sp);
1207 }
1208 }
1209 }
1210
1211 /**
1212 * qla2x00_error_entry() - Process an error entry.
1213 * @ha: SCSI driver HA context
1214 * @pkt: Entry pointer
1215 */
1216 static void
1217 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1218 {
1219 srb_t *sp;
1220
1221 #if defined(QL_DEBUG_LEVEL_2)
1222 if (pkt->entry_status & RF_INV_E_ORDER)
1223 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1224 else if (pkt->entry_status & RF_INV_E_COUNT)
1225 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1226 else if (pkt->entry_status & RF_INV_E_PARAM)
1227 qla_printk(KERN_ERR, ha,
1228 "%s: Invalid Entry Parameter\n", __func__);
1229 else if (pkt->entry_status & RF_INV_E_TYPE)
1230 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1231 else if (pkt->entry_status & RF_BUSY)
1232 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1233 else
1234 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1235 #endif
1236
1237 /* Validate handle. */
1238 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1239 sp = ha->outstanding_cmds[pkt->handle];
1240 else
1241 sp = NULL;
1242
1243 if (sp) {
1244 /* Free outstanding command slot. */
1245 ha->outstanding_cmds[pkt->handle] = NULL;
1246
1247 /* Bad payload or header */
1248 if (pkt->entry_status &
1249 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1250 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1251 sp->cmd->result = DID_ERROR << 16;
1252 } else if (pkt->entry_status & RF_BUSY) {
1253 sp->cmd->result = DID_BUS_BUSY << 16;
1254 } else {
1255 sp->cmd->result = DID_ERROR << 16;
1256 }
1257 qla2x00_sp_compl(ha, sp);
1258
1259 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1260 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1261 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1262 ha->host_no));
1263 qla_printk(KERN_WARNING, ha,
1264 "Error entry - invalid handle\n");
1265
1266 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1267 qla2xxx_wake_dpc(ha);
1268 }
1269 }
1270
1271 /**
1272 * qla2x00_ms_entry() - Process a Management Server entry.
1273 * @ha: SCSI driver HA context
1274 * @index: Response queue out pointer
1275 */
1276 static void
1277 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1278 {
1279 srb_t *sp;
1280
1281 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1282 __func__, ha->host_no, pkt, pkt->handle1));
1283
1284 /* Validate handle. */
1285 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1286 sp = ha->outstanding_cmds[pkt->handle1];
1287 else
1288 sp = NULL;
1289
1290 if (sp == NULL) {
1291 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1292 ha->host_no));
1293 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1294
1295 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1296 return;
1297 }
1298
1299 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1300 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1301
1302 /* Free outstanding command slot. */
1303 ha->outstanding_cmds[pkt->handle1] = NULL;
1304
1305 qla2x00_sp_compl(ha, sp);
1306 }
1307
1308
1309 /**
1310 * qla24xx_mbx_completion() - Process mailbox command completions.
1311 * @ha: SCSI driver HA context
1312 * @mb0: Mailbox0 register
1313 */
1314 static void
1315 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1316 {
1317 uint16_t cnt;
1318 uint16_t __iomem *wptr;
1319 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1320
1321 /* Load return mailbox registers. */
1322 ha->flags.mbox_int = 1;
1323 ha->mailbox_out[0] = mb0;
1324 wptr = (uint16_t __iomem *)&reg->mailbox1;
1325
1326 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1327 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1328 wptr++;
1329 }
1330
1331 if (ha->mcp) {
1332 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1333 __func__, ha->host_no, ha->mcp->mb[0]));
1334 } else {
1335 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1336 __func__, ha->host_no));
1337 }
1338 }
1339
1340 /**
1341 * qla24xx_process_response_queue() - Process response queue entries.
1342 * @ha: SCSI driver HA context
1343 */
1344 void
1345 qla24xx_process_response_queue(struct scsi_qla_host *ha)
1346 {
1347 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1348 struct sts_entry_24xx *pkt;
1349
1350 if (!ha->flags.online)
1351 return;
1352
1353 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1354 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1355
1356 ha->rsp_ring_index++;
1357 if (ha->rsp_ring_index == ha->response_q_length) {
1358 ha->rsp_ring_index = 0;
1359 ha->response_ring_ptr = ha->response_ring;
1360 } else {
1361 ha->response_ring_ptr++;
1362 }
1363
1364 if (pkt->entry_status != 0) {
1365 DEBUG3(printk(KERN_INFO
1366 "scsi(%ld): Process error entry.\n", ha->host_no));
1367
1368 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1369 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1370 wmb();
1371 continue;
1372 }
1373
1374 switch (pkt->entry_type) {
1375 case STATUS_TYPE:
1376 qla2x00_status_entry(ha, pkt);
1377 break;
1378 case STATUS_CONT_TYPE:
1379 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1380 break;
1381 case MS_IOCB_TYPE:
1382 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1383 break;
1384 default:
1385 /* Type Not Supported. */
1386 DEBUG4(printk(KERN_WARNING
1387 "scsi(%ld): Received unknown response pkt type %x "
1388 "entry status=%x.\n",
1389 ha->host_no, pkt->entry_type, pkt->entry_status));
1390 break;
1391 }
1392 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1393 wmb();
1394 }
1395
1396 /* Adjust ring index */
1397 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1398 }
1399
1400 /**
1401 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1402 * @irq:
1403 * @dev_id: SCSI driver HA context
1404 *
1405 * Called by system whenever the host adapter generates an interrupt.
1406 *
1407 * Returns handled flag.
1408 */
1409 irqreturn_t
1410 qla24xx_intr_handler(int irq, void *dev_id)
1411 {
1412 scsi_qla_host_t *ha;
1413 struct device_reg_24xx __iomem *reg;
1414 int status;
1415 unsigned long flags;
1416 unsigned long iter;
1417 uint32_t stat;
1418 uint32_t hccr;
1419 uint16_t mb[4];
1420
1421 ha = (scsi_qla_host_t *) dev_id;
1422 if (!ha) {
1423 printk(KERN_INFO
1424 "%s(): NULL host pointer\n", __func__);
1425 return IRQ_NONE;
1426 }
1427
1428 reg = &ha->iobase->isp24;
1429 status = 0;
1430
1431 spin_lock_irqsave(&ha->hardware_lock, flags);
1432 for (iter = 50; iter--; ) {
1433 stat = RD_REG_DWORD(&reg->host_status);
1434 if (stat & HSRX_RISC_PAUSED) {
1435 hccr = RD_REG_DWORD(&reg->hccr);
1436
1437 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1438 "Dumping firmware!\n", hccr);
1439 qla24xx_fw_dump(ha, 1);
1440
1441 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1442 break;
1443 } else if ((stat & HSRX_RISC_INT) == 0)
1444 break;
1445
1446 switch (stat & 0xff) {
1447 case 0x1:
1448 case 0x2:
1449 case 0x10:
1450 case 0x11:
1451 qla24xx_mbx_completion(ha, MSW(stat));
1452 status |= MBX_INTERRUPT;
1453
1454 break;
1455 case 0x12:
1456 mb[0] = MSW(stat);
1457 mb[1] = RD_REG_WORD(&reg->mailbox1);
1458 mb[2] = RD_REG_WORD(&reg->mailbox2);
1459 mb[3] = RD_REG_WORD(&reg->mailbox3);
1460 qla2x00_async_event(ha, mb);
1461 break;
1462 case 0x13:
1463 qla24xx_process_response_queue(ha);
1464 break;
1465 default:
1466 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1467 "(%d).\n",
1468 ha->host_no, stat & 0xff));
1469 break;
1470 }
1471 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1472 RD_REG_DWORD_RELAXED(&reg->hccr);
1473 }
1474 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1475
1476 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1477 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1478 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1479
1480 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1481 up(&ha->mbx_intr_sem);
1482
1483 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1484 }
1485
1486 return IRQ_HANDLED;
1487 }
1488
1489 /**
1490 * qla24xx_ms_entry() - Process a Management Server entry.
1491 * @ha: SCSI driver HA context
1492 * @index: Response queue out pointer
1493 */
1494 static void
1495 qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1496 {
1497 srb_t *sp;
1498
1499 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1500 __func__, ha->host_no, pkt, pkt->handle));
1501
1502 DEBUG9(printk("%s: ct pkt dump:\n", __func__));
1503 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx)));
1504
1505 /* Validate handle. */
1506 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1507 sp = ha->outstanding_cmds[pkt->handle];
1508 else
1509 sp = NULL;
1510
1511 if (sp == NULL) {
1512 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1513 ha->host_no));
1514 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1515 ha->host_no));
1516 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1517 pkt->handle);
1518
1519 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1520 return;
1521 }
1522
1523 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1524 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1525
1526 /* Free outstanding command slot. */
1527 ha->outstanding_cmds[pkt->handle] = NULL;
1528
1529 qla2x00_sp_compl(ha, sp);
1530 }
1531
1532 static irqreturn_t
1533 qla24xx_msix_rsp_q(int irq, void *dev_id)
1534 {
1535 scsi_qla_host_t *ha;
1536 struct device_reg_24xx __iomem *reg;
1537 unsigned long flags;
1538
1539 ha = dev_id;
1540 reg = &ha->iobase->isp24;
1541
1542 spin_lock_irqsave(&ha->hardware_lock, flags);
1543
1544 qla24xx_process_response_queue(ha);
1545
1546 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1547 RD_REG_DWORD_RELAXED(&reg->hccr);
1548
1549 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1550
1551 return IRQ_HANDLED;
1552 }
1553
1554 static irqreturn_t
1555 qla24xx_msix_default(int irq, void *dev_id)
1556 {
1557 scsi_qla_host_t *ha;
1558 struct device_reg_24xx __iomem *reg;
1559 int status;
1560 unsigned long flags;
1561 unsigned long iter;
1562 uint32_t stat;
1563 uint32_t hccr;
1564 uint16_t mb[4];
1565
1566 ha = dev_id;
1567 reg = &ha->iobase->isp24;
1568 status = 0;
1569
1570 spin_lock_irqsave(&ha->hardware_lock, flags);
1571 for (iter = 50; iter--; ) {
1572 stat = RD_REG_DWORD(&reg->host_status);
1573 if (stat & HSRX_RISC_PAUSED) {
1574 hccr = RD_REG_DWORD(&reg->hccr);
1575
1576 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1577 "Dumping firmware!\n", hccr);
1578 ha->isp_ops.fw_dump(ha, 1);
1579 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1580 break;
1581 } else if ((stat & HSRX_RISC_INT) == 0)
1582 break;
1583
1584 switch (stat & 0xff) {
1585 case 0x1:
1586 case 0x2:
1587 case 0x10:
1588 case 0x11:
1589 qla24xx_mbx_completion(ha, MSW(stat));
1590 status |= MBX_INTERRUPT;
1591
1592 break;
1593 case 0x12:
1594 mb[0] = MSW(stat);
1595 mb[1] = RD_REG_WORD(&reg->mailbox1);
1596 mb[2] = RD_REG_WORD(&reg->mailbox2);
1597 mb[3] = RD_REG_WORD(&reg->mailbox3);
1598 qla2x00_async_event(ha, mb);
1599 break;
1600 case 0x13:
1601 qla24xx_process_response_queue(ha);
1602 break;
1603 default:
1604 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1605 "(%d).\n",
1606 ha->host_no, stat & 0xff));
1607 break;
1608 }
1609 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1610 RD_REG_DWORD_RELAXED(&reg->hccr);
1611 }
1612 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1613
1614 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1615 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1616 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1617
1618 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1619 up(&ha->mbx_intr_sem);
1620
1621 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1622 }
1623
1624 return IRQ_HANDLED;
1625 }
1626
1627 /* Interrupt handling helpers. */
1628
1629 struct qla_init_msix_entry {
1630 uint16_t entry;
1631 uint16_t index;
1632 const char *name;
1633 irqreturn_t (*handler)(int, void *);
1634 };
1635
1636 static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = {
1637 { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
1638 "qla2xxx (default)", qla24xx_msix_default },
1639
1640 { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
1641 "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1642 };
1643
1644 static void
1645 qla24xx_disable_msix(scsi_qla_host_t *ha)
1646 {
1647 int i;
1648 struct qla_msix_entry *qentry;
1649
1650 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1651 qentry = &ha->msix_entries[imsix_entries[i].index];
1652 if (qentry->have_irq)
1653 free_irq(qentry->msix_vector, ha);
1654 }
1655 pci_disable_msix(ha->pdev);
1656 }
1657
1658 static int
1659 qla24xx_enable_msix(scsi_qla_host_t *ha)
1660 {
1661 int i, ret;
1662 struct msix_entry entries[QLA_MSIX_ENTRIES];
1663 struct qla_msix_entry *qentry;
1664
1665 for (i = 0; i < QLA_MSIX_ENTRIES; i++)
1666 entries[i].entry = imsix_entries[i].entry;
1667
1668 ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries));
1669 if (ret) {
1670 qla_printk(KERN_WARNING, ha,
1671 "MSI-X: Failed to enable support -- %d/%d\n",
1672 QLA_MSIX_ENTRIES, ret);
1673 goto msix_out;
1674 }
1675 ha->flags.msix_enabled = 1;
1676
1677 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1678 qentry = &ha->msix_entries[imsix_entries[i].index];
1679 qentry->msix_vector = entries[i].vector;
1680 qentry->msix_entry = entries[i].entry;
1681 qentry->have_irq = 0;
1682 ret = request_irq(qentry->msix_vector,
1683 imsix_entries[i].handler, 0, imsix_entries[i].name, ha);
1684 if (ret) {
1685 qla_printk(KERN_WARNING, ha,
1686 "MSI-X: Unable to register handler -- %x/%d.\n",
1687 imsix_entries[i].index, ret);
1688 qla24xx_disable_msix(ha);
1689 goto msix_out;
1690 }
1691 qentry->have_irq = 1;
1692 }
1693
1694 msix_out:
1695 return ret;
1696 }
1697
1698 int
1699 qla2x00_request_irqs(scsi_qla_host_t *ha)
1700 {
1701 int ret;
1702
1703 /* If possible, enable MSI-X. */
1704 if (!IS_QLA2432(ha))
1705 goto skip_msix;
1706
1707 if (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
1708 !QLA_MSIX_FW_MODE_1(ha->fw_attributes)) {
1709 DEBUG2(qla_printk(KERN_WARNING, ha,
1710 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1711 ha->chip_revision, ha->fw_attributes));
1712
1713 goto skip_msix;
1714 }
1715
1716 ret = qla24xx_enable_msix(ha);
1717 if (!ret) {
1718 DEBUG2(qla_printk(KERN_INFO, ha,
1719 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
1720 ha->fw_attributes));
1721 return ret;
1722 }
1723 qla_printk(KERN_WARNING, ha,
1724 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
1725 skip_msix:
1726 ret = request_irq(ha->pdev->irq, ha->isp_ops.intr_handler,
1727 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
1728 if (!ret) {
1729 ha->flags.inta_enabled = 1;
1730 ha->host->irq = ha->pdev->irq;
1731 } else {
1732 qla_printk(KERN_WARNING, ha,
1733 "Failed to reserve interrupt %d already in use.\n",
1734 ha->pdev->irq);
1735 }
1736
1737 return ret;
1738 }
1739
1740 void
1741 qla2x00_free_irqs(scsi_qla_host_t *ha)
1742 {
1743
1744 if (ha->flags.msix_enabled)
1745 qla24xx_disable_msix(ha);
1746 else if (ha->flags.inta_enabled)
1747 free_irq(ha->host->irq, ha);
1748 }
Verdex Pro support