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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / qla2xxx / qla_isr.c
blob603d4c683c6ce337c175903fcea2c4d479e148d9
1 /*
2 * QLOGIC LINUX SOFTWARE
3 *
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2004 QLogic Corporation
6 * (www.qlogic.com)
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
11 * later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 */
19 #include "qla_def.h"
20
21 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
22 static void qla2x00_async_event(scsi_qla_host_t *, uint32_t);
23 static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
24 void qla2x00_process_response_queue(struct scsi_qla_host *);
25 static void qla2x00_status_entry(scsi_qla_host_t *, sts_entry_t *);
26 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
27 static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
28 static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
29
30 static int qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *);
31
32 /**
33 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
34 * @irq:
35 * @dev_id: SCSI driver HA context
36 * @regs:
37 *
38 * Called by system whenever the host adapter generates an interrupt.
39 *
40 * Returns handled flag.
41 */
42 irqreturn_t
43 qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
44 {
45 scsi_qla_host_t *ha;
46 device_reg_t __iomem *reg;
47 int status;
48 unsigned long flags;
49 unsigned long iter;
50 uint32_t mbx;
51
52 ha = (scsi_qla_host_t *) dev_id;
53 if (!ha) {
54 printk(KERN_INFO
55 "%s(): NULL host pointer\n", __func__);
56 return (IRQ_NONE);
57 }
58
59 reg = ha->iobase;
60 status = 0;
61
62 spin_lock_irqsave(&ha->hardware_lock, flags);
63 for (iter = 50; iter--; ) {
64 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
65 break;
66
67 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
68 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
69 RD_REG_WORD(&reg->hccr);
70
71 /* Get mailbox data. */
72 mbx = RD_MAILBOX_REG(ha, reg, 0);
73 if (mbx > 0x3fff && mbx < 0x8000) {
74 qla2x00_mbx_completion(ha, (uint16_t)mbx);
75 status |= MBX_INTERRUPT;
76 } else if (mbx > 0x7fff && mbx < 0xc000) {
77 qla2x00_async_event(ha, mbx);
78 } else {
79 /*EMPTY*/
80 DEBUG2(printk("scsi(%ld): Unrecognized "
81 "interrupt type (%d)\n",
82 ha->host_no, mbx));
83 }
84 /* Release mailbox registers. */
85 WRT_REG_WORD(&reg->semaphore, 0);
86 RD_REG_WORD(&reg->semaphore);
87 } else {
88 qla2x00_process_response_queue(ha);
89
90 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
91 RD_REG_WORD(&reg->hccr);
92 }
93 }
94 spin_unlock_irqrestore(&ha->hardware_lock, flags);
95
96 qla2x00_next(ha);
97 ha->last_irq_cpu = _smp_processor_id();
98 ha->total_isr_cnt++;
99
100 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
101 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
102 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
103
104 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
105 up(&ha->mbx_intr_sem);
106
107 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
108 }
109
110 if (!list_empty(&ha->done_queue))
111 qla2x00_done(ha);
112
113 return (IRQ_HANDLED);
114 }
115
116 /**
117 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
118 * @irq:
119 * @dev_id: SCSI driver HA context
120 * @regs:
121 *
122 * Called by system whenever the host adapter generates an interrupt.
123 *
124 * Returns handled flag.
125 */
126 irqreturn_t
127 qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
128 {
129 scsi_qla_host_t *ha;
130 device_reg_t __iomem *reg;
131 int status;
132 unsigned long flags;
133 unsigned long iter;
134 uint32_t stat;
135 uint32_t mbx;
136 uint16_t hccr;
137
138 ha = (scsi_qla_host_t *) dev_id;
139 if (!ha) {
140 printk(KERN_INFO
141 "%s(): NULL host pointer\n", __func__);
142 return (IRQ_NONE);
143 }
144
145 reg = ha->iobase;
146 status = 0;
147
148 spin_lock_irqsave(&ha->hardware_lock, flags);
149 for (iter = 50; iter--; ) {
150 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
151 if (stat & HSR_RISC_PAUSED) {
152 hccr = RD_REG_WORD(&reg->hccr);
153 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
154 qla_printk(KERN_INFO, ha,
155 "Parity error -- HCCR=%x.\n", hccr);
156 else
157 qla_printk(KERN_INFO, ha,
158 "RISC paused -- HCCR=%x\n", hccr);
159
160 /*
161 * Issue a "HARD" reset in order for the RISC
162 * interrupt bit to be cleared. Schedule a big
163 * hammmer to get out of the RISC PAUSED state.
164 */
165 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
166 RD_REG_WORD(&reg->hccr);
167 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
168 break;
169 } else if ((stat & HSR_RISC_INT) == 0)
170 break;
171
172 mbx = MSW(stat);
173 switch (stat & 0xff) {
174 case 0x13:
175 qla2x00_process_response_queue(ha);
176 break;
177 case 0x1:
178 case 0x2:
179 case 0x10:
180 case 0x11:
181 qla2x00_mbx_completion(ha, (uint16_t)mbx);
182 status |= MBX_INTERRUPT;
183
184 /* Release mailbox registers. */
185 WRT_REG_WORD(&reg->semaphore, 0);
186 break;
187 case 0x12:
188 qla2x00_async_event(ha, mbx);
189 break;
190 case 0x15:
191 mbx = mbx << 16 | MBA_CMPLT_1_16BIT;
192 qla2x00_async_event(ha, mbx);
193 break;
194 case 0x16:
195 mbx = mbx << 16 | MBA_SCSI_COMPLETION;
196 qla2x00_async_event(ha, mbx);
197 break;
198 default:
199 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
200 "(%d)\n",
201 ha->host_no, stat & 0xff));
202 break;
203 }
204 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
205 RD_REG_WORD_RELAXED(&reg->hccr);
206 }
207 spin_unlock_irqrestore(&ha->hardware_lock, flags);
208
209 qla2x00_next(ha);
210 ha->last_irq_cpu = _smp_processor_id();
211 ha->total_isr_cnt++;
212
213 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
214 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
215 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
216
217 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
218 up(&ha->mbx_intr_sem);
219
220 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
221 }
222
223 if (!list_empty(&ha->done_queue))
224 qla2x00_done(ha);
225
226 return (IRQ_HANDLED);
227 }
228
229 /**
230 * qla2x00_mbx_completion() - Process mailbox command completions.
231 * @ha: SCSI driver HA context
232 * @mb0: Mailbox0 register
233 */
234 static void
235 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
236 {
237 uint16_t cnt;
238 uint16_t __iomem *wptr;
239 device_reg_t __iomem *reg = ha->iobase;
240
241 /* Load return mailbox registers. */
242 ha->flags.mbox_int = 1;
243 ha->mailbox_out[0] = mb0;
244 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
245
246 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
247 if (IS_QLA2200(ha) && cnt == 8)
248 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
249 if (cnt == 4 || cnt == 5)
250 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
251 else
252 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
253
254 wptr++;
255 }
256
257 if (ha->mcp) {
258 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
259 __func__, ha->host_no, ha->mcp->mb[0]));
260 } else {
261 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
262 __func__, ha->host_no));
263 }
264 }
265
266 /**
267 * qla2x00_async_event() - Process aynchronous events.
268 * @ha: SCSI driver HA context
269 * @mb0: Mailbox0 register
270 */
271 static void
272 qla2x00_async_event(scsi_qla_host_t *ha, uint32_t mbx)
273 {
274 static char *link_speeds[5] = { "1", "2", "4", "?", "10" };
275 char *link_speed;
276 uint16_t mb[4];
277 uint16_t handle_cnt;
278 uint16_t cnt;
279 uint32_t handles[5];
280 device_reg_t __iomem *reg = ha->iobase;
281 uint32_t rscn_entry, host_pid;
282 uint8_t rscn_queue_index;
283
284 /* Setup to process RIO completion. */
285 handle_cnt = 0;
286 mb[0] = LSW(mbx);
287 switch (mb[0]) {
288 case MBA_SCSI_COMPLETION:
289 if (IS_QLA2100(ha) || IS_QLA2200(ha))
290 handles[0] = le32_to_cpu(
291 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
292 RD_MAILBOX_REG(ha, reg, 1));
293 else
294 handles[0] = le32_to_cpu(
295 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
296 MSW(mbx));
297 handle_cnt = 1;
298 break;
299 case MBA_CMPLT_1_16BIT:
300 if (IS_QLA2100(ha) || IS_QLA2200(ha))
301 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
302 else
303 handles[0] = MSW(mbx);
304 handle_cnt = 1;
305 mb[0] = MBA_SCSI_COMPLETION;
306 break;
307 case MBA_CMPLT_2_16BIT:
308 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
309 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
310 handle_cnt = 2;
311 mb[0] = MBA_SCSI_COMPLETION;
312 break;
313 case MBA_CMPLT_3_16BIT:
314 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
315 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
316 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
317 handle_cnt = 3;
318 mb[0] = MBA_SCSI_COMPLETION;
319 break;
320 case MBA_CMPLT_4_16BIT:
321 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
322 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
323 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
324 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
325 handle_cnt = 4;
326 mb[0] = MBA_SCSI_COMPLETION;
327 break;
328 case MBA_CMPLT_5_16BIT:
329 handles[0] = (uint32_t)RD_MAILBOX_REG(ha, reg, 1);
330 handles[1] = (uint32_t)RD_MAILBOX_REG(ha, reg, 2);
331 handles[2] = (uint32_t)RD_MAILBOX_REG(ha, reg, 3);
332 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
333 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
334 handle_cnt = 5;
335 mb[0] = MBA_SCSI_COMPLETION;
336 break;
337 case MBA_CMPLT_2_32BIT:
338 handles[0] = le32_to_cpu(
339 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 2) << 16)) |
340 RD_MAILBOX_REG(ha, reg, 1));
341 handles[1] = le32_to_cpu(
342 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
343 RD_MAILBOX_REG(ha, reg, 6));
344 handle_cnt = 2;
345 mb[0] = MBA_SCSI_COMPLETION;
346 break;
347 default:
348 break;
349 }
350
351 switch (mb[0]) {
352 case MBA_SCSI_COMPLETION: /* Fast Post */
353 if (!ha->flags.online)
354 break;
355
356 for (cnt = 0; cnt < handle_cnt; cnt++)
357 qla2x00_process_completed_request(ha, handles[cnt]);
358 break;
359
360 case MBA_RESET: /* Reset */
361 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
362
363 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
364 break;
365
366 case MBA_SYSTEM_ERR: /* System Error */
367 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
368 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
369 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
370
371 qla_printk(KERN_INFO, ha,
372 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
373 mb[1], mb[2], mb[3]);
374
375 if (IS_QLA2100(ha) || IS_QLA2200(ha))
376 qla2100_fw_dump(ha, 1);
377 else
378 qla2300_fw_dump(ha, 1);
379
380 if (mb[1] == 0) {
381 qla_printk(KERN_INFO, ha,
382 "Unrecoverable Hardware Error: adapter marked "
383 "OFFLINE!\n");
384 ha->flags.online = 0;
385 } else
386 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
387 break;
388
389 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
390 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
391 ha->host_no));
392 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
393
394 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
395 break;
396
397 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
398 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
399 ha->host_no));
400 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
401
402 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
403 break;
404
405 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
406 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
407 ha->host_no));
408 break;
409
410 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
411 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
412
413 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
414 mb[1]));
415 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
416
417 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
418 atomic_set(&ha->loop_state, LOOP_DOWN);
419 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
420 qla2x00_mark_all_devices_lost(ha);
421 }
422
423 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
424
425 ha->flags.management_server_logged_in = 0;
426
427 /* Update AEN queue. */
428 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
429
430 ha->total_lip_cnt++;
431 break;
432
433 case MBA_LOOP_UP: /* Loop Up Event */
434 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
435
436 ha->link_data_rate = 0;
437 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
438 link_speed = link_speeds[0];
439 } else {
440 link_speed = link_speeds[3];
441 if (mb[1] < 5)
442 link_speed = link_speeds[mb[1]];
443 ha->link_data_rate = mb[1];
444 }
445
446 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
447 ha->host_no, link_speed));
448 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
449 link_speed);
450
451 ha->flags.management_server_logged_in = 0;
452
453 /* Update AEN queue. */
454 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
455 break;
456
457 case MBA_LOOP_DOWN: /* Loop Down Event */
458 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN.\n",
459 ha->host_no));
460 qla_printk(KERN_INFO, ha, "LOOP DOWN detected.\n");
461
462 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
463 atomic_set(&ha->loop_state, LOOP_DOWN);
464 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
465 ha->device_flags |= DFLG_NO_CABLE;
466 qla2x00_mark_all_devices_lost(ha);
467 }
468
469 ha->flags.management_server_logged_in = 0;
470 ha->link_data_rate = 0;
471
472 /* Update AEN queue. */
473 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
474 break;
475
476 case MBA_LIP_RESET: /* LIP reset occurred */
477 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
478
479 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
480 ha->host_no, mb[1]));
481 qla_printk(KERN_INFO, ha,
482 "LIP reset occured (%x).\n", mb[1]);
483
484 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
485 atomic_set(&ha->loop_state, LOOP_DOWN);
486 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
487 qla2x00_mark_all_devices_lost(ha);
488 }
489
490 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
491
492 ha->operating_mode = LOOP;
493 ha->flags.management_server_logged_in = 0;
494
495 /* Update AEN queue. */
496 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
497
498 ha->total_lip_cnt++;
499 break;
500
501 case MBA_POINT_TO_POINT: /* Point-to-Point */
502 if (IS_QLA2100(ha))
503 break;
504
505 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
506 ha->host_no));
507
508 /*
509 * Until there's a transition from loop down to loop up, treat
510 * this as loop down only.
511 */
512 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
513 atomic_set(&ha->loop_state, LOOP_DOWN);
514 if (!atomic_read(&ha->loop_down_timer))
515 atomic_set(&ha->loop_down_timer,
516 LOOP_DOWN_TIME);
517 qla2x00_mark_all_devices_lost(ha);
518 }
519
520 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
521 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
522 }
523 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
524 break;
525
526 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
527 if (IS_QLA2100(ha))
528 break;
529
530 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
531
532 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
533 "received.\n",
534 ha->host_no));
535 qla_printk(KERN_INFO, ha,
536 "Configuration change detected: value=%x.\n", mb[1]);
537
538 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
539 atomic_set(&ha->loop_state, LOOP_DOWN);
540 if (!atomic_read(&ha->loop_down_timer))
541 atomic_set(&ha->loop_down_timer,
542 LOOP_DOWN_TIME);
543 qla2x00_mark_all_devices_lost(ha);
544 }
545
546 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
547 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
548 break;
549
550 case MBA_PORT_UPDATE: /* Port database update */
551 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
552 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
553
554 /*
555 * If a single remote port just logged into (or logged out of)
556 * us, create a new entry in our rscn fcports list and handle
557 * the event like an RSCN.
558 */
559 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
560 !IS_QLA6322(ha) && ha->flags.init_done && mb[1] != 0xffff &&
561 ((ha->operating_mode == P2P && mb[1] != 0) ||
562 (ha->operating_mode != P2P && mb[1] !=
563 SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
564 int rval;
565 fc_port_t *rscn_fcport;
566
567 /* Create new fcport for login. */
568 rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
569 if (rscn_fcport) {
570 DEBUG14(printk("scsi(%ld): Port Update -- "
571 "creating RSCN fcport %p for %x/%x.\n",
572 ha->host_no, rscn_fcport, mb[1], mb[2]));
573
574 rscn_fcport->loop_id = mb[1];
575 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
576 atomic_set(&rscn_fcport->state,
577 FCS_DEVICE_LOST);
578 list_add_tail(&rscn_fcport->list,
579 &ha->rscn_fcports);
580
581 rval = qla2x00_handle_port_rscn(ha, 0,
582 rscn_fcport, 1);
583 if (rval == QLA_SUCCESS)
584 break;
585 } else {
586 DEBUG14(printk("scsi(%ld): Port Update -- "
587 "-- unable to allocate RSCN fcport "
588 "login.\n", ha->host_no));
589 }
590 }
591
592 /*
593 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
594 * event etc. earlier indicating loop is down) then process
595 * it. Otherwise ignore it and Wait for RSCN to come in.
596 */
597 atomic_set(&ha->loop_down_timer, 0);
598 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
599 atomic_read(&ha->loop_state) != LOOP_DEAD) {
600 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
601 "ignored.\n", ha->host_no));
602 break;
603 }
604
605 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
606 ha->host_no));
607 DEBUG(printk(KERN_INFO
608 "scsi(%ld): Port database changed %04x %04x.\n",
609 ha->host_no, mb[1], mb[2]));
610
611 /*
612 * Mark all devices as missing so we will login again.
613 */
614 atomic_set(&ha->loop_state, LOOP_UP);
615
616 qla2x00_mark_all_devices_lost(ha);
617
618 ha->flags.rscn_queue_overflow = 1;
619
620 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
621 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
622
623 /* Update AEN queue. */
624 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
625 break;
626
627 case MBA_RSCN_UPDATE: /* State Change Registration */
628 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
629 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
630
631 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
632 ha->host_no));
633 DEBUG(printk(KERN_INFO
634 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
635 ha->host_no, mb[1], mb[2]));
636
637 rscn_entry = (mb[1] << 16) | mb[2];
638 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
639 ha->d_id.b.al_pa;
640 if (rscn_entry == host_pid) {
641 DEBUG(printk(KERN_INFO
642 "scsi(%ld): Ignoring RSCN update to local host "
643 "port ID (%06x)\n",
644 ha->host_no, host_pid));
645 break;
646 }
647
648 rscn_queue_index = ha->rscn_in_ptr + 1;
649 if (rscn_queue_index == MAX_RSCN_COUNT)
650 rscn_queue_index = 0;
651 if (rscn_queue_index != ha->rscn_out_ptr) {
652 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
653 ha->rscn_in_ptr = rscn_queue_index;
654 } else {
655 ha->flags.rscn_queue_overflow = 1;
656 }
657
658 atomic_set(&ha->loop_state, LOOP_UPDATE);
659 atomic_set(&ha->loop_down_timer, 0);
660 ha->flags.management_server_logged_in = 0;
661
662 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
663 set_bit(RSCN_UPDATE, &ha->dpc_flags);
664
665 /* Update AEN queue. */
666 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
667 break;
668
669 /* case MBA_RIO_RESPONSE: */
670 case MBA_ZIO_RESPONSE:
671 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
672 ha->host_no));
673 DEBUG(printk(KERN_INFO
674 "scsi(%ld): [R|Z]IO update completion.\n",
675 ha->host_no));
676
677 qla2x00_process_response_queue(ha);
678 break;
679 }
680 }
681
682 /**
683 * qla2x00_process_completed_request() - Process a Fast Post response.
684 * @ha: SCSI driver HA context
685 * @index: SRB index
686 */
687 static void
688 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
689 {
690 srb_t *sp;
691
692 /* Validate handle. */
693 if (index >= MAX_OUTSTANDING_COMMANDS) {
694 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
695 ha->host_no, index));
696 qla_printk(KERN_WARNING, ha,
697 "Invalid SCSI completion handle %d.\n", index);
698
699 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
700 return;
701 }
702
703 sp = ha->outstanding_cmds[index];
704 if (sp) {
705 /* Free outstanding command slot. */
706 ha->outstanding_cmds[index] = NULL;
707
708 if (ha->actthreads)
709 ha->actthreads--;
710 sp->lun_queue->out_cnt--;
711 CMD_COMPL_STATUS(sp->cmd) = 0L;
712 CMD_SCSI_STATUS(sp->cmd) = 0L;
713
714 /* Save ISP completion status */
715 sp->cmd->result = DID_OK << 16;
716 sp->fo_retry_cnt = 0;
717 add_to_done_queue(ha, sp);
718 } else {
719 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
720 ha->host_no));
721 qla_printk(KERN_WARNING, ha,
722 "Invalid ISP SCSI completion handle\n");
723
724 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
725 }
726 }
727
728 /**
729 * qla2x00_process_response_queue() - Process response queue entries.
730 * @ha: SCSI driver HA context
731 */
732 void
733 qla2x00_process_response_queue(struct scsi_qla_host *ha)
734 {
735 device_reg_t __iomem *reg = ha->iobase;
736 sts_entry_t *pkt;
737 uint16_t handle_cnt;
738 uint16_t cnt;
739
740 if (!ha->flags.online)
741 return;
742
743 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
744 pkt = (sts_entry_t *)ha->response_ring_ptr;
745
746 ha->rsp_ring_index++;
747 if (ha->rsp_ring_index == ha->response_q_length) {
748 ha->rsp_ring_index = 0;
749 ha->response_ring_ptr = ha->response_ring;
750 } else {
751 ha->response_ring_ptr++;
752 }
753
754 if (pkt->entry_status != 0) {
755 DEBUG3(printk(KERN_INFO
756 "scsi(%ld): Process error entry.\n", ha->host_no));
757
758 qla2x00_error_entry(ha, pkt);
759 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
760 wmb();
761 continue;
762 }
763
764 switch (pkt->entry_type) {
765 case STATUS_TYPE:
766 qla2x00_status_entry(ha, pkt);
767 break;
768 case STATUS_TYPE_21:
769 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
770 for (cnt = 0; cnt < handle_cnt; cnt++) {
771 qla2x00_process_completed_request(ha,
772 ((sts21_entry_t *)pkt)->handle[cnt]);
773 }
774 break;
775 case STATUS_TYPE_22:
776 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
777 for (cnt = 0; cnt < handle_cnt; cnt++) {
778 qla2x00_process_completed_request(ha,
779 ((sts22_entry_t *)pkt)->handle[cnt]);
780 }
781 break;
782 case STATUS_CONT_TYPE:
783 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
784 break;
785 case MS_IOCB_TYPE:
786 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
787 break;
788 case MBX_IOCB_TYPE:
789 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
790 !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
791 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
792 qla2x00_process_iodesc(ha,
793 (struct mbx_entry *)pkt);
794 } else {
795 /* MBX IOCB Type Not Supported. */
796 DEBUG4(printk(KERN_WARNING
797 "scsi(%ld): Received unknown MBX "
798 "IOCB response pkt type=%x "
799 "source=%x entry status=%x.\n",
800 ha->host_no, pkt->entry_type,
801 pkt->sys_define,
802 pkt->entry_status));
803 }
804 break;
805 }
806 /* Fallthrough. */
807 default:
808 /* Type Not Supported. */
809 DEBUG4(printk(KERN_WARNING
810 "scsi(%ld): Received unknown response pkt type %x "
811 "entry status=%x.\n",
812 ha->host_no, pkt->entry_type, pkt->entry_status));
813 break;
814 }
815 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
816 wmb();
817 }
818
819 /* Adjust ring index */
820 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
821 }
822
823 /**
824 * qla2x00_status_entry() - Process a Status IOCB entry.
825 * @ha: SCSI driver HA context
826 * @pkt: Entry pointer
827 */
828 static void
829 qla2x00_status_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
830 {
831 int ret;
832 unsigned b, t, l;
833 srb_t *sp;
834 os_lun_t *lq;
835 os_tgt_t *tq;
836 fc_port_t *fcport;
837 struct scsi_cmnd *cp;
838 uint16_t comp_status;
839 uint16_t scsi_status;
840 uint8_t lscsi_status;
841 int32_t resid;
842 uint8_t sense_sz = 0;
843 uint16_t rsp_info_len;
844
845 /* Fast path completion. */
846 if (le16_to_cpu(pkt->comp_status) == CS_COMPLETE &&
847 (le16_to_cpu(pkt->scsi_status) & SS_MASK) == 0) {
848 qla2x00_process_completed_request(ha, pkt->handle);
849
850 return;
851 }
852
853 /* Validate handle. */
854 if (pkt->handle < MAX_OUTSTANDING_COMMANDS) {
855 sp = ha->outstanding_cmds[pkt->handle];
856 ha->outstanding_cmds[pkt->handle] = NULL;
857 } else
858 sp = NULL;
859
860 if (sp == NULL) {
861 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
862 ha->host_no));
863 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
864
865 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
866 if (ha->dpc_wait && !ha->dpc_active)
867 up(ha->dpc_wait);
868
869 return;
870 }
871 cp = sp->cmd;
872 if (cp == NULL) {
873 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
874 "pkt->handle=%d sp=%p sp->state:%d\n",
875 ha->host_no, pkt->handle, sp, sp->state));
876 qla_printk(KERN_WARNING, ha,
877 "Command is NULL: already returned to OS (sp=%p)\n", sp);
878
879 return;
880 }
881
882 if (ha->actthreads)
883 ha->actthreads--;
884
885 if (sp->lun_queue == NULL) {
886 DEBUG2(printk("scsi(%ld): Status Entry invalid lun pointer.\n",
887 ha->host_no));
888 qla_printk(KERN_WARNING, ha,
889 "Status Entry invalid lun pointer.\n");
890
891 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
892 if (ha->dpc_wait && !ha->dpc_active)
893 up(ha->dpc_wait);
894
895 return;
896 }
897
898 sp->lun_queue->out_cnt--;
899
900 comp_status = le16_to_cpu(pkt->comp_status);
901 /* Mask of reserved bits 12-15, before we examine the scsi status */
902 scsi_status = le16_to_cpu(pkt->scsi_status) & SS_MASK;
903 lscsi_status = scsi_status & STATUS_MASK;
904
905 CMD_ENTRY_STATUS(cp) = pkt->entry_status;
906 CMD_COMPL_STATUS(cp) = comp_status;
907 CMD_SCSI_STATUS(cp) = scsi_status;
908
909 /* Generate LU queue on cntrl, target, LUN */
910 b = cp->device->channel;
911 t = cp->device->id;
912 l = cp->device->lun,
913
914 tq = sp->tgt_queue;
915 lq = sp->lun_queue;
916
917 /*
918 * If loop is in transient state Report DID_BUS_BUSY
919 */
920 if ((comp_status != CS_COMPLETE || scsi_status != 0)) {
921 if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
922 (atomic_read(&ha->loop_down_timer) ||
923 atomic_read(&ha->loop_state) != LOOP_READY)) {
924
925 DEBUG2(printk("scsi(%ld:%d:%d:%d): Loop Not Ready - "
926 "pid=%lx.\n",
927 ha->host_no, b, t, l, cp->serial_number));
928
929 qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
930 add_to_retry_queue(ha, sp);
931 return;
932 }
933 }
934
935 /* Check for any FCP transport errors. */
936 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
937 rsp_info_len = le16_to_cpu(pkt->rsp_info_len);
938 if (rsp_info_len > 3 && pkt->rsp_info[3]) {
939 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
940 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
941 "retrying command\n", ha->host_no, b, t, l,
942 rsp_info_len, pkt->rsp_info[0], pkt->rsp_info[1],
943 pkt->rsp_info[2], pkt->rsp_info[3],
944 pkt->rsp_info[4], pkt->rsp_info[5],
945 pkt->rsp_info[6], pkt->rsp_info[7]));
946
947 cp->result = DID_BUS_BUSY << 16;
948 add_to_done_queue(ha, sp);
949 return;
950 }
951 }
952
953 /*
954 * Based on Host and scsi status generate status code for Linux
955 */
956 switch (comp_status) {
957 case CS_COMPLETE:
958 if (scsi_status == 0) {
959 cp->result = DID_OK << 16;
960 break;
961 }
962 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
963 resid = le32_to_cpu(pkt->residual_length);
964 cp->resid = resid;
965 CMD_RESID_LEN(cp) = resid;
966 }
967 if (lscsi_status == SS_BUSY_CONDITION) {
968 cp->result = DID_BUS_BUSY << 16 | lscsi_status;
969 break;
970 }
971
972 cp->result = DID_OK << 16 | lscsi_status;
973
974 if (lscsi_status != SS_CHECK_CONDITION)
975 break;
976
977 /*
978 * Copy Sense Data into sense buffer
979 */
980 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
981
982 if (!(scsi_status & SS_SENSE_LEN_VALID))
983 break;
984
985 if (le16_to_cpu(pkt->req_sense_length) <
986 sizeof(cp->sense_buffer))
987 sense_sz = le16_to_cpu(pkt->req_sense_length);
988 else
989 sense_sz = sizeof(cp->sense_buffer);
990
991 CMD_ACTUAL_SNSLEN(cp) = sense_sz;
992 sp->request_sense_length = sense_sz;
993 sp->request_sense_ptr = cp->sense_buffer;
994
995 if (sp->request_sense_length > 32)
996 sense_sz = 32;
997
998 memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
999
1000 sp->request_sense_ptr += sense_sz;
1001 sp->request_sense_length -= sense_sz;
1002 if (sp->request_sense_length != 0)
1003 ha->status_srb = sp;
1004
1005 if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
1006 qla2x00_check_sense(cp, lq) == QLA_SUCCESS) {
1007 /* Throw away status_cont if any */
1008 ha->status_srb = NULL;
1009 add_to_scsi_retry_queue(ha, sp);
1010 return;
1011 }
1012
1013 DEBUG5(printk("%s(): Check condition Sense data, "
1014 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1015 __func__, ha->host_no, b, t, l, cp,
1016 cp->serial_number));
1017 if (sense_sz)
1018 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1019 CMD_ACTUAL_SNSLEN(cp)));
1020 break;
1021
1022 case CS_DATA_UNDERRUN:
1023 DEBUG2(printk(KERN_INFO
1024 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
1025 ha->host_no, t, l, comp_status, scsi_status));
1026
1027 resid = le32_to_cpu(pkt->residual_length);
1028 if (scsi_status & SS_RESIDUAL_UNDER) {
1029 cp->resid = resid;
1030 CMD_RESID_LEN(cp) = resid;
1031 }
1032
1033 /*
1034 * Check to see if SCSI Status is non zero. If so report SCSI
1035 * Status.
1036 */
1037 if (lscsi_status != 0) {
1038 if (lscsi_status == SS_BUSY_CONDITION) {
1039 cp->result = DID_BUS_BUSY << 16 |
1040 lscsi_status;
1041 break;
1042 }
1043
1044 cp->result = DID_OK << 16 | lscsi_status;
1045
1046 if (lscsi_status != SS_CHECK_CONDITION)
1047 break;
1048
1049 /* Copy Sense Data into sense buffer */
1050 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
1051
1052 if (!(scsi_status & SS_SENSE_LEN_VALID))
1053 break;
1054
1055 if (le16_to_cpu(pkt->req_sense_length) <
1056 sizeof(cp->sense_buffer))
1057 sense_sz = le16_to_cpu(pkt->req_sense_length);
1058 else
1059 sense_sz = sizeof(cp->sense_buffer);
1060
1061 CMD_ACTUAL_SNSLEN(cp) = sense_sz;
1062 sp->request_sense_length = sense_sz;
1063 sp->request_sense_ptr = cp->sense_buffer;
1064
1065 if (sp->request_sense_length > 32)
1066 sense_sz = 32;
1067
1068 memcpy(cp->sense_buffer, pkt->req_sense_data, sense_sz);
1069
1070 sp->request_sense_ptr += sense_sz;
1071 sp->request_sense_length -= sense_sz;
1072 if (sp->request_sense_length != 0)
1073 ha->status_srb = sp;
1074
1075 if (!(sp->flags & (SRB_IOCTL | SRB_TAPE)) &&
1076 (qla2x00_check_sense(cp, lq) == QLA_SUCCESS)) {
1077 ha->status_srb = NULL;
1078 add_to_scsi_retry_queue(ha, sp);
1079 return;
1080 }
1081 DEBUG5(printk("%s(): Check condition Sense data, "
1082 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1083 __func__, ha->host_no, b, t, l, cp,
1084 cp->serial_number));
1085 if (sense_sz)
1086 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1087 CMD_ACTUAL_SNSLEN(cp)));
1088 } else {
1089 /*
1090 * If RISC reports underrun and target does not report
1091 * it then we must have a lost frame, so tell upper
1092 * layer to retry it by reporting a bus busy.
1093 */
1094 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1095 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1096 "frame(s) detected (%x of %x bytes)..."
1097 "retrying command.\n",
1098 ha->host_no, b, t, l, resid,
1099 cp->request_bufflen));
1100
1101 cp->result = DID_BUS_BUSY << 16;
1102 ha->dropped_frame_error_cnt++;
1103 break;
1104 }
1105
1106 /* Handle mid-layer underflow */
1107 if ((unsigned)(cp->request_bufflen - resid) <
1108 cp->underflow) {
1109 qla_printk(KERN_INFO, ha,
1110 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1111 "detected (%x of %x bytes)...returning "
1112 "error status.\n",
1113 ha->host_no, b, t, l, resid,
1114 cp->request_bufflen);
1115
1116 cp->result = DID_ERROR << 16;
1117 break;
1118 }
1119
1120 /* Everybody online, looking good... */
1121 cp->result = DID_OK << 16;
1122 }
1123 break;
1124
1125 case CS_DATA_OVERRUN:
1126 DEBUG2(printk(KERN_INFO
1127 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1128 ha->host_no, t, l, comp_status, scsi_status));
1129 DEBUG2(printk(KERN_INFO
1130 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1131 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1132 cp->cmnd[4], cp->cmnd[5]));
1133 DEBUG2(printk(KERN_INFO
1134 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1135 "status!\n",
1136 cp->serial_number, cp->request_bufflen,
1137 le32_to_cpu(pkt->residual_length)));
1138
1139 cp->result = DID_ERROR << 16;
1140 break;
1141
1142 case CS_PORT_LOGGED_OUT:
1143 case CS_PORT_CONFIG_CHG:
1144 case CS_PORT_BUSY:
1145 case CS_INCOMPLETE:
1146 case CS_PORT_UNAVAILABLE:
1147 /*
1148 * If the port is in Target Down state, return all IOs for this
1149 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1150 * retry_queue.
1151 */
1152 fcport = sp->fclun->fcport;
1153 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1154 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1155 ha->host_no, t, l, cp->serial_number, comp_status,
1156 atomic_read(&fcport->state)));
1157
1158 if ((sp->flags & (SRB_IOCTL | SRB_TAPE)) ||
1159 atomic_read(&fcport->state) == FCS_DEVICE_DEAD) {
1160 cp->result = DID_NO_CONNECT << 16;
1161 if (atomic_read(&ha->loop_state) == LOOP_DOWN)
1162 sp->err_id = SRB_ERR_LOOP;
1163 else
1164 sp->err_id = SRB_ERR_PORT;
1165 add_to_done_queue(ha, sp);
1166 } else {
1167 qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
1168 add_to_retry_queue(ha, sp);
1169 }
1170
1171 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1172 qla2x00_mark_device_lost(ha, fcport, 1);
1173 }
1174
1175 return;
1176 break;
1177
1178 case CS_RESET:
1179 DEBUG2(printk(KERN_INFO
1180 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1181 ha->host_no, comp_status, scsi_status));
1182
1183 if (sp->flags & (SRB_IOCTL | SRB_TAPE)) {
1184 cp->result = DID_RESET << 16;
1185 } else {
1186 qla2x00_extend_timeout(cp, EXTEND_CMD_TIMEOUT);
1187 add_to_retry_queue(ha, sp);
1188 return;
1189 }
1190 break;
1191
1192 case CS_ABORTED:
1193 /*
1194 * hv2.19.12 - DID_ABORT does not retry the request if we
1195 * aborted this request then abort otherwise it must be a
1196 * reset.
1197 */
1198 DEBUG2(printk(KERN_INFO
1199 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1200 ha->host_no, comp_status, scsi_status));
1201
1202 cp->result = DID_RESET << 16;
1203 break;
1204
1205 case CS_TIMEOUT:
1206 DEBUG2(printk(KERN_INFO
1207 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1208 "sflags=%x.\n", ha->host_no, b, t, l, comp_status,
1209 scsi_status, le16_to_cpu(pkt->status_flags)));
1210
1211 cp->result = DID_BUS_BUSY << 16;
1212
1213 fcport = lq->fclun->fcport;
1214
1215 /* Check to see if logout occurred */
1216 if ((le16_to_cpu(pkt->status_flags) & SF_LOGOUT_SENT)) {
1217 qla2x00_mark_device_lost(ha, fcport, 1);
1218 }
1219 break;
1220
1221 case CS_QUEUE_FULL:
1222 DEBUG2(printk(KERN_INFO
1223 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1224 ha->host_no, comp_status, scsi_status));
1225
1226 /* SCSI Mid-Layer handles device queue full */
1227
1228 cp->result = DID_OK << 16 | lscsi_status;
1229
1230 /* TODO: ??? */
1231 /* Adjust queue depth */
1232 ret = scsi_track_queue_full(cp->device,
1233 sp->lun_queue->out_cnt - 1);
1234 if (ret) {
1235 qla_printk(KERN_INFO, ha,
1236 "scsi(%ld:%d:%d:%d): Queue depth adjusted to %d.\n",
1237 ha->host_no, cp->device->channel, cp->device->id,
1238 cp->device->lun, ret);
1239 }
1240 break;
1241
1242 default:
1243 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1244 "0x%x-0x%x.\n",
1245 ha->host_no, comp_status, scsi_status));
1246 qla_printk(KERN_INFO, ha,
1247 "Unknown status detected 0x%x-0x%x.\n",
1248 comp_status, scsi_status);
1249
1250 cp->result = DID_ERROR << 16;
1251 break;
1252 }
1253
1254 /* Place command on done queue. */
1255 if (ha->status_srb == NULL)
1256 add_to_done_queue(ha, sp);
1257 }
1258
1259 /**
1260 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1261 * @ha: SCSI driver HA context
1262 * @pkt: Entry pointer
1263 *
1264 * Extended sense data.
1265 */
1266 static void
1267 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1268 {
1269 uint8_t sense_sz = 0;
1270 srb_t *sp = ha->status_srb;
1271 struct scsi_cmnd *cp;
1272
1273 if (sp != NULL && sp->request_sense_length != 0) {
1274 cp = sp->cmd;
1275 if (cp == NULL) {
1276 DEBUG2(printk("%s(): Cmd already returned back to OS "
1277 "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1278 qla_printk(KERN_INFO, ha,
1279 "cmd is NULL: already returned to OS (sp=%p)\n",
1280 sp);
1281
1282 ha->status_srb = NULL;
1283 return;
1284 }
1285
1286 if (sp->request_sense_length > sizeof(pkt->data)) {
1287 sense_sz = sizeof(pkt->data);
1288 } else {
1289 sense_sz = sp->request_sense_length;
1290 }
1291
1292 /* Move sense data. */
1293 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1294 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1295
1296 sp->request_sense_ptr += sense_sz;
1297 sp->request_sense_length -= sense_sz;
1298
1299 /* Place command on done queue. */
1300 if (sp->request_sense_length == 0) {
1301 add_to_done_queue(ha, sp);
1302 ha->status_srb = NULL;
1303 }
1304 }
1305 }
1306
1307 /**
1308 * qla2x00_error_entry() - Process an error entry.
1309 * @ha: SCSI driver HA context
1310 * @pkt: Entry pointer
1311 */
1312 static void
1313 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1314 {
1315 srb_t *sp;
1316
1317 #if defined(QL_DEBUG_LEVEL_2)
1318 if (pkt->entry_status & RF_INV_E_ORDER)
1319 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1320 else if (pkt->entry_status & RF_INV_E_COUNT)
1321 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1322 else if (pkt->entry_status & RF_INV_E_PARAM)
1323 qla_printk(KERN_ERR, ha,
1324 "%s: Invalid Entry Parameter\n", __func__);
1325 else if (pkt->entry_status & RF_INV_E_TYPE)
1326 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1327 else if (pkt->entry_status & RF_BUSY)
1328 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1329 else
1330 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1331 #endif
1332
1333 /* Validate handle. */
1334 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1335 sp = ha->outstanding_cmds[pkt->handle];
1336 else
1337 sp = NULL;
1338
1339 if (sp) {
1340 /* Free outstanding command slot. */
1341 ha->outstanding_cmds[pkt->handle] = NULL;
1342 if (ha->actthreads)
1343 ha->actthreads--;
1344 sp->lun_queue->out_cnt--;
1345
1346 /* Bad payload or header */
1347 if (pkt->entry_status &
1348 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1349 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1350 sp->cmd->result = DID_ERROR << 16;
1351 } else if (pkt->entry_status & RF_BUSY) {
1352 sp->cmd->result = DID_BUS_BUSY << 16;
1353 } else {
1354 sp->cmd->result = DID_ERROR << 16;
1355 }
1356 /* Place command on done queue. */
1357 add_to_done_queue(ha, sp);
1358
1359 } else if (pkt->entry_type == COMMAND_A64_TYPE ||
1360 pkt->entry_type == COMMAND_TYPE) {
1361 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1362 ha->host_no));
1363 qla_printk(KERN_WARNING, ha,
1364 "Error entry - invalid handle\n");
1365
1366 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1367 if (ha->dpc_wait && !ha->dpc_active)
1368 up(ha->dpc_wait);
1369 }
1370 }
1371
1372 /**
1373 * qla2x00_ms_entry() - Process a Management Server entry.
1374 * @ha: SCSI driver HA context
1375 * @index: Response queue out pointer
1376 */
1377 static void
1378 qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1379 {
1380 srb_t *sp;
1381
1382 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1383 __func__, ha->host_no, pkt, pkt->handle1));
1384
1385 /* Validate handle. */
1386 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1387 sp = ha->outstanding_cmds[pkt->handle1];
1388 else
1389 sp = NULL;
1390
1391 if (sp == NULL) {
1392 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1393 ha->host_no));
1394 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1395
1396 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1397 return;
1398 }
1399
1400 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1401 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1402
1403 /* Free outstanding command slot. */
1404 ha->outstanding_cmds[pkt->handle1] = NULL;
1405
1406 add_to_done_queue(ha, sp);
1407 }
1408
1409 /**
1410 * qla2x00_check_sense() - Perform any sense data interrogation.
1411 * @cp: SCSI Command
1412 * @lq: Lun queue
1413 *
1414 * Returns QLA_SUCCESS if the lun queue is suspended, else
1415 * QLA_FUNCTION_FAILED (lun queue not suspended).
1416 */
1417 static int
1418 qla2x00_check_sense(struct scsi_cmnd *cp, os_lun_t *lq)
1419 {
1420 scsi_qla_host_t *ha;
1421 srb_t *sp;
1422 fc_port_t *fcport;
1423
1424 ha = (scsi_qla_host_t *) cp->device->host->hostdata;
1425 if ((cp->sense_buffer[0] & 0x70) != 0x70) {
1426 return (QLA_FUNCTION_FAILED);
1427 }
1428
1429 sp = (srb_t * )CMD_SP(cp);
1430 sp->flags |= SRB_GOT_SENSE;
1431
1432 switch (cp->sense_buffer[2] & 0xf) {
1433 case RECOVERED_ERROR:
1434 cp->result = DID_OK << 16;
1435 cp->sense_buffer[0] = 0;
1436 break;
1437
1438 case NOT_READY:
1439 fcport = lq->fclun->fcport;
1440
1441 /*
1442 * Suspend the lun only for hard disk device type.
1443 */
1444 if ((fcport->flags & FCF_TAPE_PRESENT) == 0 &&
1445 lq->q_state != LUN_STATE_TIMEOUT) {
1446 /*
1447 * If target is in process of being ready then suspend
1448 * lun for 6 secs and retry all the commands.
1449 */
1450 if (cp->sense_buffer[12] == 0x4 &&
1451 cp->sense_buffer[13] == 0x1) {
1452
1453 /* Suspend the lun for 6 secs */
1454 qla2x00_suspend_lun(ha, lq, 6,
1455 ql2xsuspendcount);
1456
1457 return (QLA_SUCCESS);
1458 }
1459 }
1460 break;
1461 }
1462
1463 return (QLA_FUNCTION_FAILED);
1464 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree