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[SCSI] qla2xxx: Correct synchronization issues during rport addition/deletion.
[deliverable/linux.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_QLA25XX(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 ha->link_data_rate = 0;
406 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
407 link_speed = link_speeds[0];
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 = 0;
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 a single remote port just logged into (or logged out of)
519 * us, create a new entry in our rscn fcports list and handle
520 * the event like an RSCN.
521 */
522 if (ql2xprocessrscn &&
523 !IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
524 !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA25XX(ha) &&
525 ha->flags.init_done && mb[1] != 0xffff &&
526 ((ha->operating_mode == P2P && mb[1] != 0) ||
527 (ha->operating_mode != P2P && mb[1] !=
528 SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
529 int rval;
530 fc_port_t *rscn_fcport;
531
532 /* Create new fcport for login. */
533 rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
534 if (rscn_fcport) {
535 DEBUG14(printk("scsi(%ld): Port Update -- "
536 "creating RSCN fcport %p for %x/%x/%x.\n",
537 ha->host_no, rscn_fcport, mb[1], mb[2],
538 mb[3]));
539
540 rscn_fcport->loop_id = mb[1];
541 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
542 atomic_set(&rscn_fcport->state,
543 FCS_DEVICE_LOST);
544 list_add_tail(&rscn_fcport->list,
545 &ha->rscn_fcports);
546
547 rval = qla2x00_handle_port_rscn(ha, 0,
548 rscn_fcport, 1);
549 if (rval == QLA_SUCCESS)
550 break;
551 } else {
552 DEBUG14(printk("scsi(%ld): Port Update -- "
553 "-- unable to allocate RSCN fcport "
554 "login.\n", ha->host_no));
555 }
556 }
557
558 /*
559 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
560 * event etc. earlier indicating loop is down) then process
561 * it. Otherwise ignore it and Wait for RSCN to come in.
562 */
563 atomic_set(&ha->loop_down_timer, 0);
564 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
565 atomic_read(&ha->loop_state) != LOOP_DEAD) {
566 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
567 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
568 mb[2], mb[3]));
569 break;
570 }
571
572 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
573 ha->host_no));
574 DEBUG(printk(KERN_INFO
575 "scsi(%ld): Port database changed %04x %04x %04x.\n",
576 ha->host_no, mb[1], mb[2], mb[3]));
577
578 /*
579 * Mark all devices as missing so we will login again.
580 */
581 atomic_set(&ha->loop_state, LOOP_UP);
582
583 qla2x00_mark_all_devices_lost(ha, 1);
584
585 ha->flags.rscn_queue_overflow = 1;
586
587 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
588 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
589
590 /* Update AEN queue. */
591 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
592 break;
593
594 case MBA_RSCN_UPDATE: /* State Change Registration */
595 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
596 ha->host_no));
597 DEBUG(printk(KERN_INFO
598 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
599 ha->host_no, mb[1], mb[2]));
600
601 rscn_entry = (mb[1] << 16) | mb[2];
602 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
603 ha->d_id.b.al_pa;
604 if (rscn_entry == host_pid) {
605 DEBUG(printk(KERN_INFO
606 "scsi(%ld): Ignoring RSCN update to local host "
607 "port ID (%06x)\n",
608 ha->host_no, host_pid));
609 break;
610 }
611
612 rscn_queue_index = ha->rscn_in_ptr + 1;
613 if (rscn_queue_index == MAX_RSCN_COUNT)
614 rscn_queue_index = 0;
615 if (rscn_queue_index != ha->rscn_out_ptr) {
616 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
617 ha->rscn_in_ptr = rscn_queue_index;
618 } else {
619 ha->flags.rscn_queue_overflow = 1;
620 }
621
622 atomic_set(&ha->loop_state, LOOP_UPDATE);
623 atomic_set(&ha->loop_down_timer, 0);
624 ha->flags.management_server_logged_in = 0;
625
626 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
627 set_bit(RSCN_UPDATE, &ha->dpc_flags);
628
629 /* Update AEN queue. */
630 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
631 break;
632
633 /* case MBA_RIO_RESPONSE: */
634 case MBA_ZIO_RESPONSE:
635 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
636 ha->host_no));
637 DEBUG(printk(KERN_INFO
638 "scsi(%ld): [R|Z]IO update completion.\n",
639 ha->host_no));
640
641 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
642 qla24xx_process_response_queue(ha);
643 else
644 qla2x00_process_response_queue(ha);
645 break;
646
647 case MBA_DISCARD_RND_FRAME:
648 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
649 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
650 break;
651 }
652 }
653
654 /**
655 * qla2x00_process_completed_request() - Process a Fast Post response.
656 * @ha: SCSI driver HA context
657 * @index: SRB index
658 */
659 static void
660 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
661 {
662 srb_t *sp;
663
664 /* Validate handle. */
665 if (index >= MAX_OUTSTANDING_COMMANDS) {
666 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
667 ha->host_no, index));
668 qla_printk(KERN_WARNING, ha,
669 "Invalid SCSI completion handle %d.\n", index);
670
671 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
672 return;
673 }
674
675 sp = ha->outstanding_cmds[index];
676 if (sp) {
677 /* Free outstanding command slot. */
678 ha->outstanding_cmds[index] = NULL;
679
680 CMD_COMPL_STATUS(sp->cmd) = 0L;
681 CMD_SCSI_STATUS(sp->cmd) = 0L;
682
683 /* Save ISP completion status */
684 sp->cmd->result = DID_OK << 16;
685 qla2x00_sp_compl(ha, sp);
686 } else {
687 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
688 ha->host_no));
689 qla_printk(KERN_WARNING, ha,
690 "Invalid ISP SCSI completion handle\n");
691
692 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
693 }
694 }
695
696 /**
697 * qla2x00_process_response_queue() - Process response queue entries.
698 * @ha: SCSI driver HA context
699 */
700 void
701 qla2x00_process_response_queue(struct scsi_qla_host *ha)
702 {
703 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
704 sts_entry_t *pkt;
705 uint16_t handle_cnt;
706 uint16_t cnt;
707
708 if (!ha->flags.online)
709 return;
710
711 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
712 pkt = (sts_entry_t *)ha->response_ring_ptr;
713
714 ha->rsp_ring_index++;
715 if (ha->rsp_ring_index == ha->response_q_length) {
716 ha->rsp_ring_index = 0;
717 ha->response_ring_ptr = ha->response_ring;
718 } else {
719 ha->response_ring_ptr++;
720 }
721
722 if (pkt->entry_status != 0) {
723 DEBUG3(printk(KERN_INFO
724 "scsi(%ld): Process error entry.\n", ha->host_no));
725
726 qla2x00_error_entry(ha, pkt);
727 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
728 wmb();
729 continue;
730 }
731
732 switch (pkt->entry_type) {
733 case STATUS_TYPE:
734 qla2x00_status_entry(ha, pkt);
735 break;
736 case STATUS_TYPE_21:
737 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
738 for (cnt = 0; cnt < handle_cnt; cnt++) {
739 qla2x00_process_completed_request(ha,
740 ((sts21_entry_t *)pkt)->handle[cnt]);
741 }
742 break;
743 case STATUS_TYPE_22:
744 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
745 for (cnt = 0; cnt < handle_cnt; cnt++) {
746 qla2x00_process_completed_request(ha,
747 ((sts22_entry_t *)pkt)->handle[cnt]);
748 }
749 break;
750 case STATUS_CONT_TYPE:
751 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
752 break;
753 case MS_IOCB_TYPE:
754 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
755 break;
756 case MBX_IOCB_TYPE:
757 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
758 !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
759 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
760 qla2x00_process_iodesc(ha,
761 (struct mbx_entry *)pkt);
762 } else {
763 /* MBX IOCB Type Not Supported. */
764 DEBUG4(printk(KERN_WARNING
765 "scsi(%ld): Received unknown MBX "
766 "IOCB response pkt type=%x "
767 "source=%x entry status=%x.\n",
768 ha->host_no, pkt->entry_type,
769 pkt->sys_define,
770 pkt->entry_status));
771 }
772 break;
773 }
774 /* Fallthrough. */
775 default:
776 /* Type Not Supported. */
777 DEBUG4(printk(KERN_WARNING
778 "scsi(%ld): Received unknown response pkt type %x "
779 "entry status=%x.\n",
780 ha->host_no, pkt->entry_type, pkt->entry_status));
781 break;
782 }
783 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
784 wmb();
785 }
786
787 /* Adjust ring index */
788 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
789 }
790
791 /**
792 * qla2x00_status_entry() - Process a Status IOCB entry.
793 * @ha: SCSI driver HA context
794 * @pkt: Entry pointer
795 */
796 static void
797 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
798 {
799 srb_t *sp;
800 fc_port_t *fcport;
801 struct scsi_cmnd *cp;
802 sts_entry_t *sts;
803 struct sts_entry_24xx *sts24;
804 uint16_t comp_status;
805 uint16_t scsi_status;
806 uint8_t lscsi_status;
807 int32_t resid;
808 uint32_t sense_len, rsp_info_len, resid_len;
809 uint8_t *rsp_info, *sense_data;
810
811 sts = (sts_entry_t *) pkt;
812 sts24 = (struct sts_entry_24xx *) pkt;
813 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
814 comp_status = le16_to_cpu(sts24->comp_status);
815 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
816 } else {
817 comp_status = le16_to_cpu(sts->comp_status);
818 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
819 }
820
821 /* Fast path completion. */
822 if (comp_status == CS_COMPLETE && scsi_status == 0) {
823 qla2x00_process_completed_request(ha, sts->handle);
824
825 return;
826 }
827
828 /* Validate handle. */
829 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
830 sp = ha->outstanding_cmds[sts->handle];
831 ha->outstanding_cmds[sts->handle] = NULL;
832 } else
833 sp = NULL;
834
835 if (sp == NULL) {
836 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
837 ha->host_no));
838 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
839
840 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
841 if (ha->dpc_wait && !ha->dpc_active)
842 up(ha->dpc_wait);
843
844 return;
845 }
846 cp = sp->cmd;
847 if (cp == NULL) {
848 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
849 "pkt->handle=%d sp=%p sp->state:%d\n",
850 ha->host_no, sts->handle, sp, sp->state));
851 qla_printk(KERN_WARNING, ha,
852 "Command is NULL: already returned to OS (sp=%p)\n", sp);
853
854 return;
855 }
856
857 lscsi_status = scsi_status & STATUS_MASK;
858 CMD_ENTRY_STATUS(cp) = sts->entry_status;
859 CMD_COMPL_STATUS(cp) = comp_status;
860 CMD_SCSI_STATUS(cp) = scsi_status;
861
862 fcport = sp->fcport;
863
864 sense_len = rsp_info_len = resid_len = 0;
865 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
866 sense_len = le32_to_cpu(sts24->sense_len);
867 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
868 resid_len = le32_to_cpu(sts24->rsp_residual_count);
869 rsp_info = sts24->data;
870 sense_data = sts24->data;
871 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
872 } else {
873 sense_len = le16_to_cpu(sts->req_sense_length);
874 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
875 resid_len = le32_to_cpu(sts->residual_length);
876 rsp_info = sts->rsp_info;
877 sense_data = sts->req_sense_data;
878 }
879
880 /* Check for any FCP transport errors. */
881 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
882 /* Sense data lies beyond any FCP RESPONSE data. */
883 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
884 sense_data += rsp_info_len;
885 if (rsp_info_len > 3 && rsp_info[3]) {
886 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
887 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
888 "retrying command\n", ha->host_no,
889 cp->device->channel, cp->device->id,
890 cp->device->lun, rsp_info_len, rsp_info[0],
891 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
892 rsp_info[5], rsp_info[6], rsp_info[7]));
893
894 cp->result = DID_BUS_BUSY << 16;
895 qla2x00_sp_compl(ha, sp);
896 return;
897 }
898 }
899
900 /*
901 * Based on Host and scsi status generate status code for Linux
902 */
903 switch (comp_status) {
904 case CS_COMPLETE:
905 if (scsi_status == 0) {
906 cp->result = DID_OK << 16;
907 break;
908 }
909 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
910 resid = resid_len;
911 cp->resid = resid;
912 CMD_RESID_LEN(cp) = resid;
913
914 if (!lscsi_status &&
915 ((unsigned)(cp->request_bufflen - resid) <
916 cp->underflow)) {
917 qla_printk(KERN_INFO, ha,
918 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
919 "detected (%x of %x bytes)...returning "
920 "error status.\n", ha->host_no,
921 cp->device->channel, cp->device->id,
922 cp->device->lun, resid,
923 cp->request_bufflen);
924
925 cp->result = DID_ERROR << 16;
926 break;
927 }
928 }
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", __func__,
959 ha->host_no, cp->device->channel, cp->device->id,
960 cp->device->lun, cp, cp->serial_number));
961 if (sense_len)
962 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
963 CMD_ACTUAL_SNSLEN(cp)));
964 break;
965
966 case CS_DATA_UNDERRUN:
967 resid = resid_len;
968 if (scsi_status & SS_RESIDUAL_UNDER) {
969 cp->resid = resid;
970 CMD_RESID_LEN(cp) = resid;
971 } else {
972 DEBUG2(printk(KERN_INFO
973 "scsi(%ld:%d:%d) UNDERRUN status detected "
974 "0x%x-0x%x.\n", ha->host_no, cp->device->id,
975 cp->device->lun, comp_status, scsi_status));
976
977 }
978
979 /*
980 * Check to see if SCSI Status is non zero. If so report SCSI
981 * Status.
982 */
983 if (lscsi_status != 0) {
984 cp->result = DID_OK << 16 | lscsi_status;
985
986 if (lscsi_status != SS_CHECK_CONDITION)
987 break;
988
989 /* Copy Sense Data into sense buffer */
990 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
991
992 if (!(scsi_status & SS_SENSE_LEN_VALID))
993 break;
994
995 if (sense_len >= sizeof(cp->sense_buffer))
996 sense_len = sizeof(cp->sense_buffer);
997
998 CMD_ACTUAL_SNSLEN(cp) = sense_len;
999 sp->request_sense_length = sense_len;
1000 sp->request_sense_ptr = cp->sense_buffer;
1001
1002 if (sp->request_sense_length > 32)
1003 sense_len = 32;
1004
1005 memcpy(cp->sense_buffer, sense_data, sense_len);
1006
1007 sp->request_sense_ptr += sense_len;
1008 sp->request_sense_length -= sense_len;
1009 if (sp->request_sense_length != 0)
1010 ha->status_srb = sp;
1011
1012 DEBUG5(printk("%s(): Check condition Sense data, "
1013 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1014 __func__, ha->host_no, cp->device->channel,
1015 cp->device->id, cp->device->lun, cp,
1016 cp->serial_number));
1017
1018 if (sense_len)
1019 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1020 CMD_ACTUAL_SNSLEN(cp)));
1021 } else {
1022 /*
1023 * If RISC reports underrun and target does not report
1024 * it then we must have a lost frame, so tell upper
1025 * layer to retry it by reporting a bus busy.
1026 */
1027 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1028 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1029 "frame(s) detected (%x of %x bytes)..."
1030 "retrying command.\n", ha->host_no,
1031 cp->device->channel, cp->device->id,
1032 cp->device->lun, resid,
1033 cp->request_bufflen));
1034
1035 cp->result = DID_BUS_BUSY << 16;
1036 break;
1037 }
1038
1039 /* Handle mid-layer underflow */
1040 if ((unsigned)(cp->request_bufflen - resid) <
1041 cp->underflow) {
1042 qla_printk(KERN_INFO, ha,
1043 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1044 "detected (%x of %x bytes)...returning "
1045 "error status.\n", ha->host_no,
1046 cp->device->channel, cp->device->id,
1047 cp->device->lun, resid,
1048 cp->request_bufflen);
1049
1050 cp->result = DID_ERROR << 16;
1051 break;
1052 }
1053
1054 /* Everybody online, looking good... */
1055 cp->result = DID_OK << 16;
1056 }
1057 break;
1058
1059 case CS_DATA_OVERRUN:
1060 DEBUG2(printk(KERN_INFO
1061 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1062 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1063 scsi_status));
1064 DEBUG2(printk(KERN_INFO
1065 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1066 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1067 cp->cmnd[4], cp->cmnd[5]));
1068 DEBUG2(printk(KERN_INFO
1069 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1070 "status!\n",
1071 cp->serial_number, cp->request_bufflen, resid_len));
1072
1073 cp->result = DID_ERROR << 16;
1074 break;
1075
1076 case CS_PORT_LOGGED_OUT:
1077 case CS_PORT_CONFIG_CHG:
1078 case CS_PORT_BUSY:
1079 case CS_INCOMPLETE:
1080 case CS_PORT_UNAVAILABLE:
1081 /*
1082 * If the port is in Target Down state, return all IOs for this
1083 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1084 * retry_queue.
1085 */
1086 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1087 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1088 ha->host_no, cp->device->id, cp->device->lun,
1089 cp->serial_number, comp_status,
1090 atomic_read(&fcport->state)));
1091
1092 cp->result = DID_BUS_BUSY << 16;
1093 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1094 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1095 }
1096 break;
1097
1098 case CS_RESET:
1099 DEBUG2(printk(KERN_INFO
1100 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1101 ha->host_no, comp_status, scsi_status));
1102
1103 cp->result = DID_RESET << 16;
1104 break;
1105
1106 case CS_ABORTED:
1107 /*
1108 * hv2.19.12 - DID_ABORT does not retry the request if we
1109 * aborted this request then abort otherwise it must be a
1110 * reset.
1111 */
1112 DEBUG2(printk(KERN_INFO
1113 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1114 ha->host_no, comp_status, scsi_status));
1115
1116 cp->result = DID_RESET << 16;
1117 break;
1118
1119 case CS_TIMEOUT:
1120 cp->result = DID_BUS_BUSY << 16;
1121
1122 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1123 DEBUG2(printk(KERN_INFO
1124 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1125 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1126 cp->device->id, cp->device->lun, comp_status,
1127 scsi_status));
1128 break;
1129 }
1130 DEBUG2(printk(KERN_INFO
1131 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1132 "sflags=%x.\n", ha->host_no, cp->device->channel,
1133 cp->device->id, cp->device->lun, comp_status, scsi_status,
1134 le16_to_cpu(sts->status_flags)));
1135
1136 /* Check to see if logout occurred. */
1137 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1138 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1139 break;
1140
1141 case CS_QUEUE_FULL:
1142 DEBUG2(printk(KERN_INFO
1143 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1144 ha->host_no, comp_status, scsi_status));
1145
1146 /* SCSI Mid-Layer handles device queue full */
1147
1148 cp->result = DID_OK << 16 | lscsi_status;
1149
1150 break;
1151
1152 default:
1153 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1154 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1155 qla_printk(KERN_INFO, ha,
1156 "Unknown status detected 0x%x-0x%x.\n",
1157 comp_status, scsi_status);
1158
1159 cp->result = DID_ERROR << 16;
1160 break;
1161 }
1162
1163 /* Place command on done queue. */
1164 if (ha->status_srb == NULL)
1165 qla2x00_sp_compl(ha, sp);
1166 }
1167
1168 /**
1169 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1170 * @ha: SCSI driver HA context
1171 * @pkt: Entry pointer
1172 *
1173 * Extended sense data.
1174 */
1175 static void
1176 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1177 {
1178 uint8_t sense_sz = 0;
1179 srb_t *sp = ha->status_srb;
1180 struct scsi_cmnd *cp;
1181
1182 if (sp != NULL && sp->request_sense_length != 0) {
1183 cp = sp->cmd;
1184 if (cp == NULL) {
1185 DEBUG2(printk("%s(): Cmd already returned back to OS "
1186 "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1187 qla_printk(KERN_INFO, ha,
1188 "cmd is NULL: already returned to OS (sp=%p)\n",
1189 sp);
1190
1191 ha->status_srb = NULL;
1192 return;
1193 }
1194
1195 if (sp->request_sense_length > sizeof(pkt->data)) {
1196 sense_sz = sizeof(pkt->data);
1197 } else {
1198 sense_sz = sp->request_sense_length;
1199 }
1200
1201 /* Move sense data. */
1202 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
1203 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1204 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1205 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1206
1207 sp->request_sense_ptr += sense_sz;
1208 sp->request_sense_length -= sense_sz;
1209
1210 /* Place command on done queue. */
1211 if (sp->request_sense_length == 0) {
1212 ha->status_srb = NULL;
1213 qla2x00_sp_compl(ha, sp);
1214 }
1215 }
1216 }
1217
1218 /**
1219 * qla2x00_error_entry() - Process an error entry.
1220 * @ha: SCSI driver HA context
1221 * @pkt: Entry pointer
1222 */
1223 static void
1224 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1225 {
1226 srb_t *sp;
1227
1228 #if defined(QL_DEBUG_LEVEL_2)
1229 if (pkt->entry_status & RF_INV_E_ORDER)
1230 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1231 else if (pkt->entry_status & RF_INV_E_COUNT)
1232 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1233 else if (pkt->entry_status & RF_INV_E_PARAM)
1234 qla_printk(KERN_ERR, ha,
1235 "%s: Invalid Entry Parameter\n", __func__);
1236 else if (pkt->entry_status & RF_INV_E_TYPE)
1237 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1238 else if (pkt->entry_status & RF_BUSY)
1239 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1240 else
1241 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1242 #endif
1243
1244 /* Validate handle. */
1245 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1246 sp = ha->outstanding_cmds[pkt->handle];
1247 else
1248 sp = NULL;
1249
1250 if (sp) {
1251 /* Free outstanding command slot. */
1252 ha->outstanding_cmds[pkt->handle] = NULL;
1253
1254 /* Bad payload or header */
1255 if (pkt->entry_status &
1256 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1257 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1258 sp->cmd->result = DID_ERROR << 16;
1259 } else if (pkt->entry_status & RF_BUSY) {
1260 sp->cmd->result = DID_BUS_BUSY << 16;
1261 } else {
1262 sp->cmd->result = DID_ERROR << 16;
1263 }
1264 qla2x00_sp_compl(ha, sp);
1265
1266 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1267 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1268 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1269 ha->host_no));
1270 qla_printk(KERN_WARNING, ha,
1271 "Error entry - invalid handle\n");
1272
1273 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1274 if (ha->dpc_wait && !ha->dpc_active)
1275 up(ha->dpc_wait);
1276 }
1277 }
1278
1279 /**
1280 * qla2x00_ms_entry() - Process a Management Server entry.
1281 * @ha: SCSI driver HA context
1282 * @index: Response queue out pointer
1283 */
1284 static void
1285 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1286 {
1287 srb_t *sp;
1288
1289 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1290 __func__, ha->host_no, pkt, pkt->handle1));
1291
1292 /* Validate handle. */
1293 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1294 sp = ha->outstanding_cmds[pkt->handle1];
1295 else
1296 sp = NULL;
1297
1298 if (sp == NULL) {
1299 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1300 ha->host_no));
1301 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1302
1303 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1304 return;
1305 }
1306
1307 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1308 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1309
1310 /* Free outstanding command slot. */
1311 ha->outstanding_cmds[pkt->handle1] = NULL;
1312
1313 qla2x00_sp_compl(ha, sp);
1314 }
1315
1316
1317 /**
1318 * qla24xx_mbx_completion() - Process mailbox command completions.
1319 * @ha: SCSI driver HA context
1320 * @mb0: Mailbox0 register
1321 */
1322 static void
1323 qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1324 {
1325 uint16_t cnt;
1326 uint16_t __iomem *wptr;
1327 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1328
1329 /* Load return mailbox registers. */
1330 ha->flags.mbox_int = 1;
1331 ha->mailbox_out[0] = mb0;
1332 wptr = (uint16_t __iomem *)&reg->mailbox1;
1333
1334 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1335 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1336 wptr++;
1337 }
1338
1339 if (ha->mcp) {
1340 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1341 __func__, ha->host_no, ha->mcp->mb[0]));
1342 } else {
1343 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1344 __func__, ha->host_no));
1345 }
1346 }
1347
1348 /**
1349 * qla24xx_process_response_queue() - Process response queue entries.
1350 * @ha: SCSI driver HA context
1351 */
1352 void
1353 qla24xx_process_response_queue(struct scsi_qla_host *ha)
1354 {
1355 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1356 struct sts_entry_24xx *pkt;
1357
1358 if (!ha->flags.online)
1359 return;
1360
1361 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1362 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1363
1364 ha->rsp_ring_index++;
1365 if (ha->rsp_ring_index == ha->response_q_length) {
1366 ha->rsp_ring_index = 0;
1367 ha->response_ring_ptr = ha->response_ring;
1368 } else {
1369 ha->response_ring_ptr++;
1370 }
1371
1372 if (pkt->entry_status != 0) {
1373 DEBUG3(printk(KERN_INFO
1374 "scsi(%ld): Process error entry.\n", ha->host_no));
1375
1376 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1377 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1378 wmb();
1379 continue;
1380 }
1381
1382 switch (pkt->entry_type) {
1383 case STATUS_TYPE:
1384 qla2x00_status_entry(ha, pkt);
1385 break;
1386 case STATUS_CONT_TYPE:
1387 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1388 break;
1389 case MS_IOCB_TYPE:
1390 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1391 break;
1392 default:
1393 /* Type Not Supported. */
1394 DEBUG4(printk(KERN_WARNING
1395 "scsi(%ld): Received unknown response pkt type %x "
1396 "entry status=%x.\n",
1397 ha->host_no, pkt->entry_type, pkt->entry_status));
1398 break;
1399 }
1400 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1401 wmb();
1402 }
1403
1404 /* Adjust ring index */
1405 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1406 }
1407
1408 /**
1409 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1410 * @irq:
1411 * @dev_id: SCSI driver HA context
1412 * @regs:
1413 *
1414 * Called by system whenever the host adapter generates an interrupt.
1415 *
1416 * Returns handled flag.
1417 */
1418 irqreturn_t
1419 qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1420 {
1421 scsi_qla_host_t *ha;
1422 struct device_reg_24xx __iomem *reg;
1423 int status;
1424 unsigned long flags;
1425 unsigned long iter;
1426 uint32_t stat;
1427 uint32_t hccr;
1428 uint16_t mb[4];
1429
1430 ha = (scsi_qla_host_t *) dev_id;
1431 if (!ha) {
1432 printk(KERN_INFO
1433 "%s(): NULL host pointer\n", __func__);
1434 return IRQ_NONE;
1435 }
1436
1437 reg = &ha->iobase->isp24;
1438 status = 0;
1439
1440 spin_lock_irqsave(&ha->hardware_lock, flags);
1441 for (iter = 50; iter--; ) {
1442 stat = RD_REG_DWORD(&reg->host_status);
1443 if (stat & HSRX_RISC_PAUSED) {
1444 hccr = RD_REG_DWORD(&reg->hccr);
1445
1446 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1447 "Dumping firmware!\n", hccr);
1448 qla24xx_fw_dump(ha, 1);
1449
1450 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1451 break;
1452 } else if ((stat & HSRX_RISC_INT) == 0)
1453 break;
1454
1455 switch (stat & 0xff) {
1456 case 0x1:
1457 case 0x2:
1458 case 0x10:
1459 case 0x11:
1460 qla24xx_mbx_completion(ha, MSW(stat));
1461 status |= MBX_INTERRUPT;
1462
1463 break;
1464 case 0x12:
1465 mb[0] = MSW(stat);
1466 mb[1] = RD_REG_WORD(&reg->mailbox1);
1467 mb[2] = RD_REG_WORD(&reg->mailbox2);
1468 mb[3] = RD_REG_WORD(&reg->mailbox3);
1469 qla2x00_async_event(ha, mb);
1470 break;
1471 case 0x13:
1472 qla24xx_process_response_queue(ha);
1473 break;
1474 default:
1475 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1476 "(%d).\n",
1477 ha->host_no, stat & 0xff));
1478 break;
1479 }
1480 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1481 RD_REG_DWORD_RELAXED(&reg->hccr);
1482 }
1483 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1484
1485 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1486 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1487 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1488
1489 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1490 up(&ha->mbx_intr_sem);
1491
1492 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1493 }
1494
1495 return IRQ_HANDLED;
1496 }
1497
1498 /**
1499 * qla24xx_ms_entry() - Process a Management Server entry.
1500 * @ha: SCSI driver HA context
1501 * @index: Response queue out pointer
1502 */
1503 static void
1504 qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1505 {
1506 srb_t *sp;
1507
1508 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1509 __func__, ha->host_no, pkt, pkt->handle));
1510
1511 DEBUG9(printk("%s: ct pkt dump:\n", __func__);)
1512 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx));)
1513
1514 /* Validate handle. */
1515 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1516 sp = ha->outstanding_cmds[pkt->handle];
1517 else
1518 sp = NULL;
1519
1520 if (sp == NULL) {
1521 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1522 ha->host_no));
1523 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1524 ha->host_no));
1525 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1526 pkt->handle);
1527
1528 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1529 return;
1530 }
1531
1532 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1533 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1534
1535 /* Free outstanding command slot. */
1536 ha->outstanding_cmds[pkt->handle] = NULL;
1537
1538 qla2x00_sp_compl(ha, sp);
1539 }
1540
Linux kernel - Deliverables
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