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[IPX]: Fix build error in ipx_recvmsg()
[linux-2.6/verdex.git] / drivers / scsi / qla2xxx / qla_isr.c
blobf910de6dd4375c37474cdeea3367ad4763775634
1 /*
2 * QLOGIC LINUX SOFTWARE
3 *
4 * QLogic ISP2x00 device driver for Linux 2.6.x
5 * Copyright (C) 2003-2005 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 *, uint16_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 *, void *);
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 void qla24xx_process_response_queue(scsi_qla_host_t *);
31 static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
32
33 /**
34 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
35 * @irq:
36 * @dev_id: SCSI driver HA context
37 * @regs:
38 *
39 * Called by system whenever the host adapter generates an interrupt.
40 *
41 * Returns handled flag.
42 */
43 irqreturn_t
44 qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
45 {
46 scsi_qla_host_t *ha;
47 struct device_reg_2xxx __iomem *reg;
48 int status;
49 unsigned long flags;
50 unsigned long iter;
51 uint16_t mb[4];
52
53 ha = (scsi_qla_host_t *) dev_id;
54 if (!ha) {
55 printk(KERN_INFO
56 "%s(): NULL host pointer\n", __func__);
57 return (IRQ_NONE);
58 }
59
60 reg = &ha->iobase->isp;
61 status = 0;
62
63 spin_lock_irqsave(&ha->hardware_lock, flags);
64 for (iter = 50; iter--; ) {
65 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
66 break;
67
68 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
69 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
70 RD_REG_WORD(&reg->hccr);
71
72 /* Get mailbox data. */
73 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
74 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
75 qla2x00_mbx_completion(ha, mb[0]);
76 status |= MBX_INTERRUPT;
77 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
78 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
79 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
80 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
81 qla2x00_async_event(ha, mb);
82 } else {
83 /*EMPTY*/
84 DEBUG2(printk("scsi(%ld): Unrecognized "
85 "interrupt type (%d).\n",
86 ha->host_no, mb[0]));
87 }
88 /* Release mailbox registers. */
89 WRT_REG_WORD(&reg->semaphore, 0);
90 RD_REG_WORD(&reg->semaphore);
91 } else {
92 qla2x00_process_response_queue(ha);
93
94 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
95 RD_REG_WORD(&reg->hccr);
96 }
97 }
98 spin_unlock_irqrestore(&ha->hardware_lock, flags);
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 return (IRQ_HANDLED);
111 }
112
113 /**
114 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
115 * @irq:
116 * @dev_id: SCSI driver HA context
117 * @regs:
118 *
119 * Called by system whenever the host adapter generates an interrupt.
120 *
121 * Returns handled flag.
122 */
123 irqreturn_t
124 qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
125 {
126 scsi_qla_host_t *ha;
127 struct device_reg_2xxx __iomem *reg;
128 int status;
129 unsigned long flags;
130 unsigned long iter;
131 uint32_t stat;
132 uint16_t hccr;
133 uint16_t mb[4];
134
135 ha = (scsi_qla_host_t *) dev_id;
136 if (!ha) {
137 printk(KERN_INFO
138 "%s(): NULL host pointer\n", __func__);
139 return (IRQ_NONE);
140 }
141
142 reg = &ha->iobase->isp;
143 status = 0;
144
145 spin_lock_irqsave(&ha->hardware_lock, flags);
146 for (iter = 50; iter--; ) {
147 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
148 if (stat & HSR_RISC_PAUSED) {
149 hccr = RD_REG_WORD(&reg->hccr);
150 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
151 qla_printk(KERN_INFO, ha,
152 "Parity error -- HCCR=%x.\n", hccr);
153 else
154 qla_printk(KERN_INFO, ha,
155 "RISC paused -- HCCR=%x.\n", hccr);
156
157 /*
158 * Issue a "HARD" reset in order for the RISC
159 * interrupt bit to be cleared. Schedule a big
160 * hammmer to get out of the RISC PAUSED state.
161 */
162 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
163 RD_REG_WORD(&reg->hccr);
164 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
165 break;
166 } else if ((stat & HSR_RISC_INT) == 0)
167 break;
168
169 switch (stat & 0xff) {
170 case 0x1:
171 case 0x2:
172 case 0x10:
173 case 0x11:
174 qla2x00_mbx_completion(ha, MSW(stat));
175 status |= MBX_INTERRUPT;
176
177 /* Release mailbox registers. */
178 WRT_REG_WORD(&reg->semaphore, 0);
179 break;
180 case 0x12:
181 mb[0] = MSW(stat);
182 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
183 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
184 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
185 qla2x00_async_event(ha, mb);
186 break;
187 case 0x13:
188 qla2x00_process_response_queue(ha);
189 break;
190 case 0x15:
191 mb[0] = MBA_CMPLT_1_16BIT;
192 mb[1] = MSW(stat);
193 qla2x00_async_event(ha, mb);
194 break;
195 case 0x16:
196 mb[0] = MBA_SCSI_COMPLETION;
197 mb[1] = MSW(stat);
198 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
199 qla2x00_async_event(ha, mb);
200 break;
201 default:
202 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
203 "(%d).\n",
204 ha->host_no, stat & 0xff));
205 break;
206 }
207 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
208 RD_REG_WORD_RELAXED(&reg->hccr);
209 }
210 spin_unlock_irqrestore(&ha->hardware_lock, flags);
211
212 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
213 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
214 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
215
216 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
217 up(&ha->mbx_intr_sem);
218
219 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
220 }
221
222 return (IRQ_HANDLED);
223 }
224
225 /**
226 * qla2x00_mbx_completion() - Process mailbox command completions.
227 * @ha: SCSI driver HA context
228 * @mb0: Mailbox0 register
229 */
230 static void
231 qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
232 {
233 uint16_t cnt;
234 uint16_t __iomem *wptr;
235 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
236
237 /* Load return mailbox registers. */
238 ha->flags.mbox_int = 1;
239 ha->mailbox_out[0] = mb0;
240 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
241
242 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
243 if (IS_QLA2200(ha) && cnt == 8)
244 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
245 if (cnt == 4 || cnt == 5)
246 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
247 else
248 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
249
250 wptr++;
251 }
252
253 if (ha->mcp) {
254 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
255 __func__, ha->host_no, ha->mcp->mb[0]));
256 } else {
257 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
258 __func__, ha->host_no));
259 }
260 }
261
262 /**
263 * qla2x00_async_event() - Process aynchronous events.
264 * @ha: SCSI driver HA context
265 * @mb: Mailbox registers (0 - 3)
266 */
267 static void
268 qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
269 {
270 #define LS_UNKNOWN 2
271 static char *link_speeds[5] = { "1", "2", "?", "4", "10" };
272 char *link_speed;
273 uint16_t handle_cnt;
274 uint16_t cnt;
275 uint32_t handles[5];
276 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
277 uint32_t rscn_entry, host_pid;
278 uint8_t rscn_queue_index;
279
280 /* Setup to process RIO completion. */
281 handle_cnt = 0;
282 switch (mb[0]) {
283 case MBA_SCSI_COMPLETION:
284 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
285 handle_cnt = 1;
286 break;
287 case MBA_CMPLT_1_16BIT:
288 handles[0] = mb[1];
289 handle_cnt = 1;
290 mb[0] = MBA_SCSI_COMPLETION;
291 break;
292 case MBA_CMPLT_2_16BIT:
293 handles[0] = mb[1];
294 handles[1] = mb[2];
295 handle_cnt = 2;
296 mb[0] = MBA_SCSI_COMPLETION;
297 break;
298 case MBA_CMPLT_3_16BIT:
299 handles[0] = mb[1];
300 handles[1] = mb[2];
301 handles[2] = mb[3];
302 handle_cnt = 3;
303 mb[0] = MBA_SCSI_COMPLETION;
304 break;
305 case MBA_CMPLT_4_16BIT:
306 handles[0] = mb[1];
307 handles[1] = mb[2];
308 handles[2] = mb[3];
309 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
310 handle_cnt = 4;
311 mb[0] = MBA_SCSI_COMPLETION;
312 break;
313 case MBA_CMPLT_5_16BIT:
314 handles[0] = mb[1];
315 handles[1] = mb[2];
316 handles[2] = mb[3];
317 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
318 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
319 handle_cnt = 5;
320 mb[0] = MBA_SCSI_COMPLETION;
321 break;
322 case MBA_CMPLT_2_32BIT:
323 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
324 handles[1] = le32_to_cpu(
325 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
326 RD_MAILBOX_REG(ha, reg, 6));
327 handle_cnt = 2;
328 mb[0] = MBA_SCSI_COMPLETION;
329 break;
330 default:
331 break;
332 }
333
334 switch (mb[0]) {
335 case MBA_SCSI_COMPLETION: /* Fast Post */
336 if (!ha->flags.online)
337 break;
338
339 for (cnt = 0; cnt < handle_cnt; cnt++)
340 qla2x00_process_completed_request(ha, handles[cnt]);
341 break;
342
343 case MBA_RESET: /* Reset */
344 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
345
346 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
347 break;
348
349 case MBA_SYSTEM_ERR: /* System Error */
350 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
351 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
352 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
353
354 qla_printk(KERN_INFO, ha,
355 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
356 mb[1], mb[2], mb[3]);
357
358 ha->isp_ops.fw_dump(ha, 1);
359
360 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
361 if (mb[1] == 0 && mb[2] == 0) {
362 qla_printk(KERN_ERR, ha,
363 "Unrecoverable Hardware Error: adapter "
364 "marked OFFLINE!\n");
365 ha->flags.online = 0;
366 } else
367 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
368 } else if (mb[1] == 0) {
369 qla_printk(KERN_INFO, ha,
370 "Unrecoverable Hardware Error: adapter marked "
371 "OFFLINE!\n");
372 ha->flags.online = 0;
373 } else
374 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
375 break;
376
377 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
378 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
379 ha->host_no));
380 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
381
382 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
383 break;
384
385 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
386 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
387 ha->host_no));
388 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
389
390 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
391 break;
392
393 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
394 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
395 ha->host_no));
396 break;
397
398 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
399 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
400 mb[1]));
401 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
402
403 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
404 atomic_set(&ha->loop_state, LOOP_DOWN);
405 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
406 qla2x00_mark_all_devices_lost(ha);
407 }
408
409 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
410
411 ha->flags.management_server_logged_in = 0;
412
413 /* Update AEN queue. */
414 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
415
416 break;
417
418 case MBA_LOOP_UP: /* Loop Up Event */
419 ha->link_data_rate = 0;
420 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
421 link_speed = link_speeds[0];
422 } else {
423 link_speed = link_speeds[LS_UNKNOWN];
424 if (mb[1] < 5)
425 link_speed = link_speeds[mb[1]];
426 ha->link_data_rate = mb[1];
427 }
428
429 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
430 ha->host_no, link_speed));
431 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
432 link_speed);
433
434 ha->flags.management_server_logged_in = 0;
435
436 /* Update AEN queue. */
437 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
438 break;
439
440 case MBA_LOOP_DOWN: /* Loop Down Event */
441 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
442 ha->host_no, mb[1]));
443 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
444
445 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
446 atomic_set(&ha->loop_state, LOOP_DOWN);
447 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
448 ha->device_flags |= DFLG_NO_CABLE;
449 qla2x00_mark_all_devices_lost(ha);
450 }
451
452 ha->flags.management_server_logged_in = 0;
453 ha->link_data_rate = 0;
454
455 /* Update AEN queue. */
456 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
457 break;
458
459 case MBA_LIP_RESET: /* LIP reset occurred */
460 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
461 ha->host_no, mb[1]));
462 qla_printk(KERN_INFO, ha,
463 "LIP reset occured (%x).\n", mb[1]);
464
465 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
466 atomic_set(&ha->loop_state, LOOP_DOWN);
467 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
468 qla2x00_mark_all_devices_lost(ha);
469 }
470
471 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
472
473 ha->operating_mode = LOOP;
474 ha->flags.management_server_logged_in = 0;
475
476 /* Update AEN queue. */
477 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
478
479 break;
480
481 case MBA_POINT_TO_POINT: /* Point-to-Point */
482 if (IS_QLA2100(ha))
483 break;
484
485 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
486 ha->host_no));
487
488 /*
489 * Until there's a transition from loop down to loop up, treat
490 * this as loop down only.
491 */
492 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
493 atomic_set(&ha->loop_state, LOOP_DOWN);
494 if (!atomic_read(&ha->loop_down_timer))
495 atomic_set(&ha->loop_down_timer,
496 LOOP_DOWN_TIME);
497 qla2x00_mark_all_devices_lost(ha);
498 }
499
500 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
501 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
502 }
503 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
504 break;
505
506 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
507 if (IS_QLA2100(ha))
508 break;
509
510 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
511 "received.\n",
512 ha->host_no));
513 qla_printk(KERN_INFO, ha,
514 "Configuration change detected: value=%x.\n", mb[1]);
515
516 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
517 atomic_set(&ha->loop_state, LOOP_DOWN);
518 if (!atomic_read(&ha->loop_down_timer))
519 atomic_set(&ha->loop_down_timer,
520 LOOP_DOWN_TIME);
521 qla2x00_mark_all_devices_lost(ha);
522 }
523
524 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
525 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
526 break;
527
528 case MBA_PORT_UPDATE: /* Port database update */
529 /*
530 * If a single remote port just logged into (or logged out of)
531 * us, create a new entry in our rscn fcports list and handle
532 * the event like an RSCN.
533 */
534 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
535 !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA25XX(ha) &&
536 ha->flags.init_done && mb[1] != 0xffff &&
537 ((ha->operating_mode == P2P && mb[1] != 0) ||
538 (ha->operating_mode != P2P && mb[1] !=
539 SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
540 int rval;
541 fc_port_t *rscn_fcport;
542
543 /* Create new fcport for login. */
544 rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
545 if (rscn_fcport) {
546 DEBUG14(printk("scsi(%ld): Port Update -- "
547 "creating RSCN fcport %p for %x/%x/%x.\n",
548 ha->host_no, rscn_fcport, mb[1], mb[2],
549 mb[3]));
550
551 rscn_fcport->loop_id = mb[1];
552 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
553 atomic_set(&rscn_fcport->state,
554 FCS_DEVICE_LOST);
555 list_add_tail(&rscn_fcport->list,
556 &ha->rscn_fcports);
557
558 rval = qla2x00_handle_port_rscn(ha, 0,
559 rscn_fcport, 1);
560 if (rval == QLA_SUCCESS)
561 break;
562 } else {
563 DEBUG14(printk("scsi(%ld): Port Update -- "
564 "-- unable to allocate RSCN fcport "
565 "login.\n", ha->host_no));
566 }
567 }
568
569 /*
570 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
571 * event etc. earlier indicating loop is down) then process
572 * it. Otherwise ignore it and Wait for RSCN to come in.
573 */
574 atomic_set(&ha->loop_down_timer, 0);
575 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
576 atomic_read(&ha->loop_state) != LOOP_DEAD) {
577 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
578 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
579 mb[2], mb[3]));
580 break;
581 }
582
583 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
584 ha->host_no));
585 DEBUG(printk(KERN_INFO
586 "scsi(%ld): Port database changed %04x %04x %04x.\n",
587 ha->host_no, mb[1], mb[2], mb[3]));
588
589 /*
590 * Mark all devices as missing so we will login again.
591 */
592 atomic_set(&ha->loop_state, LOOP_UP);
593
594 qla2x00_mark_all_devices_lost(ha);
595
596 ha->flags.rscn_queue_overflow = 1;
597
598 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
599 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
600
601 /* Update AEN queue. */
602 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
603 break;
604
605 case MBA_RSCN_UPDATE: /* State Change Registration */
606 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
607 ha->host_no));
608 DEBUG(printk(KERN_INFO
609 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
610 ha->host_no, mb[1], mb[2]));
611
612 rscn_entry = (mb[1] << 16) | mb[2];
613 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
614 ha->d_id.b.al_pa;
615 if (rscn_entry == host_pid) {
616 DEBUG(printk(KERN_INFO
617 "scsi(%ld): Ignoring RSCN update to local host "
618 "port ID (%06x)\n",
619 ha->host_no, host_pid));
620 break;
621 }
622
623 rscn_queue_index = ha->rscn_in_ptr + 1;
624 if (rscn_queue_index == MAX_RSCN_COUNT)
625 rscn_queue_index = 0;
626 if (rscn_queue_index != ha->rscn_out_ptr) {
627 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
628 ha->rscn_in_ptr = rscn_queue_index;
629 } else {
630 ha->flags.rscn_queue_overflow = 1;
631 }
632
633 atomic_set(&ha->loop_state, LOOP_UPDATE);
634 atomic_set(&ha->loop_down_timer, 0);
635 ha->flags.management_server_logged_in = 0;
636
637 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
638 set_bit(RSCN_UPDATE, &ha->dpc_flags);
639
640 /* Update AEN queue. */
641 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
642 break;
643
644 /* case MBA_RIO_RESPONSE: */
645 case MBA_ZIO_RESPONSE:
646 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
647 ha->host_no));
648 DEBUG(printk(KERN_INFO
649 "scsi(%ld): [R|Z]IO update completion.\n",
650 ha->host_no));
651
652 qla2x00_process_response_queue(ha);
653 break;
654
655 case MBA_DISCARD_RND_FRAME:
656 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
657 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
658 break;
659 }
660 }
661
662 /**
663 * qla2x00_process_completed_request() - Process a Fast Post response.
664 * @ha: SCSI driver HA context
665 * @index: SRB index
666 */
667 static void
668 qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
669 {
670 srb_t *sp;
671
672 /* Validate handle. */
673 if (index >= MAX_OUTSTANDING_COMMANDS) {
674 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
675 ha->host_no, index));
676 qla_printk(KERN_WARNING, ha,
677 "Invalid SCSI completion handle %d.\n", index);
678
679 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
680 return;
681 }
682
683 sp = ha->outstanding_cmds[index];
684 if (sp) {
685 /* Free outstanding command slot. */
686 ha->outstanding_cmds[index] = NULL;
687
688 CMD_COMPL_STATUS(sp->cmd) = 0L;
689 CMD_SCSI_STATUS(sp->cmd) = 0L;
690
691 /* Save ISP completion status */
692 sp->cmd->result = DID_OK << 16;
693 qla2x00_sp_compl(ha, sp);
694 } else {
695 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
696 ha->host_no));
697 qla_printk(KERN_WARNING, ha,
698 "Invalid ISP SCSI completion handle\n");
699
700 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
701 }
702 }
703
704 /**
705 * qla2x00_process_response_queue() - Process response queue entries.
706 * @ha: SCSI driver HA context
707 */
708 void
709 qla2x00_process_response_queue(struct scsi_qla_host *ha)
710 {
711 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
712 sts_entry_t *pkt;
713 uint16_t handle_cnt;
714 uint16_t cnt;
715
716 if (!ha->flags.online)
717 return;
718
719 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
720 pkt = (sts_entry_t *)ha->response_ring_ptr;
721
722 ha->rsp_ring_index++;
723 if (ha->rsp_ring_index == ha->response_q_length) {
724 ha->rsp_ring_index = 0;
725 ha->response_ring_ptr = ha->response_ring;
726 } else {
727 ha->response_ring_ptr++;
728 }
729
730 if (pkt->entry_status != 0) {
731 DEBUG3(printk(KERN_INFO
732 "scsi(%ld): Process error entry.\n", ha->host_no));
733
734 qla2x00_error_entry(ha, pkt);
735 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
736 wmb();
737 continue;
738 }
739
740 switch (pkt->entry_type) {
741 case STATUS_TYPE:
742 qla2x00_status_entry(ha, pkt);
743 break;
744 case STATUS_TYPE_21:
745 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
746 for (cnt = 0; cnt < handle_cnt; cnt++) {
747 qla2x00_process_completed_request(ha,
748 ((sts21_entry_t *)pkt)->handle[cnt]);
749 }
750 break;
751 case STATUS_TYPE_22:
752 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
753 for (cnt = 0; cnt < handle_cnt; cnt++) {
754 qla2x00_process_completed_request(ha,
755 ((sts22_entry_t *)pkt)->handle[cnt]);
756 }
757 break;
758 case STATUS_CONT_TYPE:
759 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
760 break;
761 case MS_IOCB_TYPE:
762 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
763 break;
764 case MBX_IOCB_TYPE:
765 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
766 !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
767 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
768 qla2x00_process_iodesc(ha,
769 (struct mbx_entry *)pkt);
770 } else {
771 /* MBX IOCB Type Not Supported. */
772 DEBUG4(printk(KERN_WARNING
773 "scsi(%ld): Received unknown MBX "
774 "IOCB response pkt type=%x "
775 "source=%x entry status=%x.\n",
776 ha->host_no, pkt->entry_type,
777 pkt->sys_define,
778 pkt->entry_status));
779 }
780 break;
781 }
782 /* Fallthrough. */
783 default:
784 /* Type Not Supported. */
785 DEBUG4(printk(KERN_WARNING
786 "scsi(%ld): Received unknown response pkt type %x "
787 "entry status=%x.\n",
788 ha->host_no, pkt->entry_type, pkt->entry_status));
789 break;
790 }
791 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
792 wmb();
793 }
794
795 /* Adjust ring index */
796 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
797 }
798
799 /**
800 * qla2x00_status_entry() - Process a Status IOCB entry.
801 * @ha: SCSI driver HA context
802 * @pkt: Entry pointer
803 */
804 static void
805 qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
806 {
807 srb_t *sp;
808 fc_port_t *fcport;
809 struct scsi_cmnd *cp;
810 sts_entry_t *sts;
811 struct sts_entry_24xx *sts24;
812 uint16_t comp_status;
813 uint16_t scsi_status;
814 uint8_t lscsi_status;
815 int32_t resid;
816 uint32_t sense_len, rsp_info_len, resid_len;
817 uint8_t *rsp_info, *sense_data;
818
819 sts = (sts_entry_t *) pkt;
820 sts24 = (struct sts_entry_24xx *) pkt;
821 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
822 comp_status = le16_to_cpu(sts24->comp_status);
823 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
824 } else {
825 comp_status = le16_to_cpu(sts->comp_status);
826 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
827 }
828
829 /* Fast path completion. */
830 if (comp_status == CS_COMPLETE && scsi_status == 0) {
831 qla2x00_process_completed_request(ha, sts->handle);
832
833 return;
834 }
835
836 /* Validate handle. */
837 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
838 sp = ha->outstanding_cmds[sts->handle];
839 ha->outstanding_cmds[sts->handle] = NULL;
840 } else
841 sp = NULL;
842
843 if (sp == NULL) {
844 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
845 ha->host_no));
846 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
847
848 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
849 if (ha->dpc_wait && !ha->dpc_active)
850 up(ha->dpc_wait);
851
852 return;
853 }
854 cp = sp->cmd;
855 if (cp == NULL) {
856 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
857 "pkt->handle=%d sp=%p sp->state:%d\n",
858 ha->host_no, sts->handle, sp, sp->state));
859 qla_printk(KERN_WARNING, ha,
860 "Command is NULL: already returned to OS (sp=%p)\n", sp);
861
862 return;
863 }
864
865 lscsi_status = scsi_status & STATUS_MASK;
866 CMD_ENTRY_STATUS(cp) = sts->entry_status;
867 CMD_COMPL_STATUS(cp) = comp_status;
868 CMD_SCSI_STATUS(cp) = scsi_status;
869
870 fcport = sp->fcport;
871
872 sense_len = rsp_info_len = resid_len = 0;
873 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
874 sense_len = le32_to_cpu(sts24->sense_len);
875 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
876 resid_len = le32_to_cpu(sts24->rsp_residual_count);
877 rsp_info = sts24->data;
878 sense_data = sts24->data;
879 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
880 } else {
881 sense_len = le16_to_cpu(sts->req_sense_length);
882 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
883 resid_len = le32_to_cpu(sts->residual_length);
884 rsp_info = sts->rsp_info;
885 sense_data = sts->req_sense_data;
886 }
887
888 /* Check for any FCP transport errors. */
889 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
890 /* Sense data lies beyond any FCP RESPONSE data. */
891 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
892 sense_data += rsp_info_len;
893 if (rsp_info_len > 3 && rsp_info[3]) {
894 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
895 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
896 "retrying command\n", ha->host_no,
897 cp->device->channel, cp->device->id,
898 cp->device->lun, rsp_info_len, rsp_info[0],
899 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
900 rsp_info[5], rsp_info[6], rsp_info[7]));
901
902 cp->result = DID_BUS_BUSY << 16;
903 qla2x00_sp_compl(ha, sp);
904 return;
905 }
906 }
907
908 /*
909 * Based on Host and scsi status generate status code for Linux
910 */
911 switch (comp_status) {
912 case CS_COMPLETE:
913 if (scsi_status == 0) {
914 cp->result = DID_OK << 16;
915 break;
916 }
917 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
918 resid = resid_len;
919 cp->resid = resid;
920 CMD_RESID_LEN(cp) = resid;
921 }
922 cp->result = DID_OK << 16 | lscsi_status;
923
924 if (lscsi_status != SS_CHECK_CONDITION)
925 break;
926
927 /* Copy Sense Data into sense buffer. */
928 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
929
930 if (!(scsi_status & SS_SENSE_LEN_VALID))
931 break;
932
933 if (sense_len >= sizeof(cp->sense_buffer))
934 sense_len = sizeof(cp->sense_buffer);
935
936 CMD_ACTUAL_SNSLEN(cp) = sense_len;
937 sp->request_sense_length = sense_len;
938 sp->request_sense_ptr = cp->sense_buffer;
939
940 if (sp->request_sense_length > 32)
941 sense_len = 32;
942
943 memcpy(cp->sense_buffer, sense_data, sense_len);
944
945 sp->request_sense_ptr += sense_len;
946 sp->request_sense_length -= sense_len;
947 if (sp->request_sense_length != 0)
948 ha->status_srb = sp;
949
950 DEBUG5(printk("%s(): Check condition Sense data, "
951 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
952 ha->host_no, cp->device->channel, cp->device->id,
953 cp->device->lun, cp, cp->serial_number));
954 if (sense_len)
955 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
956 CMD_ACTUAL_SNSLEN(cp)));
957 break;
958
959 case CS_DATA_UNDERRUN:
960 DEBUG2(printk(KERN_INFO
961 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
962 ha->host_no, cp->device->id, cp->device->lun, comp_status,
963 scsi_status));
964
965 resid = resid_len;
966 if (scsi_status & SS_RESIDUAL_UNDER) {
967 cp->resid = resid;
968 CMD_RESID_LEN(cp) = resid;
969 }
970
971 /*
972 * Check to see if SCSI Status is non zero. If so report SCSI
973 * Status.
974 */
975 if (lscsi_status != 0) {
976 cp->result = DID_OK << 16 | lscsi_status;
977
978 if (lscsi_status != SS_CHECK_CONDITION)
979 break;
980
981 /* Copy Sense Data into sense buffer */
982 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
983
984 if (!(scsi_status & SS_SENSE_LEN_VALID))
985 break;
986
987 if (sense_len >= sizeof(cp->sense_buffer))
988 sense_len = sizeof(cp->sense_buffer);
989
990 CMD_ACTUAL_SNSLEN(cp) = sense_len;
991 sp->request_sense_length = sense_len;
992 sp->request_sense_ptr = cp->sense_buffer;
993
994 if (sp->request_sense_length > 32)
995 sense_len = 32;
996
997 memcpy(cp->sense_buffer, sense_data, sense_len);
998
999 sp->request_sense_ptr += sense_len;
1000 sp->request_sense_length -= sense_len;
1001 if (sp->request_sense_length != 0)
1002 ha->status_srb = sp;
1003
1004 DEBUG5(printk("%s(): Check condition Sense data, "
1005 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
1006 __func__, ha->host_no, cp->device->channel,
1007 cp->device->id, cp->device->lun, cp,
1008 cp->serial_number));
1009
1010 if (sense_len)
1011 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1012 CMD_ACTUAL_SNSLEN(cp)));
1013 } else {
1014 /*
1015 * If RISC reports underrun and target does not report
1016 * it then we must have a lost frame, so tell upper
1017 * layer to retry it by reporting a bus busy.
1018 */
1019 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1020 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1021 "frame(s) detected (%x of %x bytes)..."
1022 "retrying command.\n", ha->host_no,
1023 cp->device->channel, cp->device->id,
1024 cp->device->lun, resid,
1025 cp->request_bufflen));
1026
1027 cp->result = DID_BUS_BUSY << 16;
1028 break;
1029 }
1030
1031 /* Handle mid-layer underflow */
1032 if ((unsigned)(cp->request_bufflen - resid) <
1033 cp->underflow) {
1034 qla_printk(KERN_INFO, ha,
1035 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1036 "detected (%x of %x bytes)...returning "
1037 "error status.\n", ha->host_no,
1038 cp->device->channel, cp->device->id,
1039 cp->device->lun, resid,
1040 cp->request_bufflen);
1041
1042 cp->result = DID_ERROR << 16;
1043 break;
1044 }
1045
1046 /* Everybody online, looking good... */
1047 cp->result = DID_OK << 16;
1048 }
1049 break;
1050
1051 case CS_DATA_OVERRUN:
1052 DEBUG2(printk(KERN_INFO
1053 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1054 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1055 scsi_status));
1056 DEBUG2(printk(KERN_INFO
1057 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1058 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1059 cp->cmnd[4], cp->cmnd[5]));
1060 DEBUG2(printk(KERN_INFO
1061 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1062 "status!\n",
1063 cp->serial_number, cp->request_bufflen, resid_len));
1064
1065 cp->result = DID_ERROR << 16;
1066 break;
1067
1068 case CS_PORT_LOGGED_OUT:
1069 case CS_PORT_CONFIG_CHG:
1070 case CS_PORT_BUSY:
1071 case CS_INCOMPLETE:
1072 case CS_PORT_UNAVAILABLE:
1073 /*
1074 * If the port is in Target Down state, return all IOs for this
1075 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1076 * retry_queue.
1077 */
1078 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1079 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1080 ha->host_no, cp->device->id, cp->device->lun,
1081 cp->serial_number, comp_status,
1082 atomic_read(&fcport->state)));
1083
1084 cp->result = DID_BUS_BUSY << 16;
1085 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1086 qla2x00_mark_device_lost(ha, fcport, 1);
1087 }
1088 break;
1089
1090 case CS_RESET:
1091 DEBUG2(printk(KERN_INFO
1092 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1093 ha->host_no, comp_status, scsi_status));
1094
1095 cp->result = DID_RESET << 16;
1096 break;
1097
1098 case CS_ABORTED:
1099 /*
1100 * hv2.19.12 - DID_ABORT does not retry the request if we
1101 * aborted this request then abort otherwise it must be a
1102 * reset.
1103 */
1104 DEBUG2(printk(KERN_INFO
1105 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1106 ha->host_no, comp_status, scsi_status));
1107
1108 cp->result = DID_RESET << 16;
1109 break;
1110
1111 case CS_TIMEOUT:
1112 cp->result = DID_BUS_BUSY << 16;
1113
1114 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1115 DEBUG2(printk(KERN_INFO
1116 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1117 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1118 cp->device->id, cp->device->lun, comp_status,
1119 scsi_status));
1120 break;
1121 }
1122 DEBUG2(printk(KERN_INFO
1123 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1124 "sflags=%x.\n", ha->host_no, cp->device->channel,
1125 cp->device->id, cp->device->lun, comp_status, scsi_status,
1126 le16_to_cpu(sts->status_flags)));
1127
1128 /* Check to see if logout occurred. */
1129 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1130 qla2x00_mark_device_lost(ha, fcport, 1);
1131 break;
1132
1133 case CS_QUEUE_FULL:
1134 DEBUG2(printk(KERN_INFO
1135 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1136 ha->host_no, comp_status, scsi_status));
1137
1138 /* SCSI Mid-Layer handles device queue full */
1139
1140 cp->result = DID_OK << 16 | lscsi_status;
1141
1142 break;
1143
1144 default:
1145 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1146 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1147 qla_printk(KERN_INFO, ha,
1148 "Unknown status detected 0x%x-0x%x.\n",
1149 comp_status, scsi_status);
1150
1151 cp->result = DID_ERROR << 16;
1152 break;
1153 }
1154
1155 /* Place command on done queue. */
1156 if (ha->status_srb == NULL)
1157 qla2x00_sp_compl(ha, sp);
1158 }
1159
1160 /**
1161 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1162 * @ha: SCSI driver HA context
1163 * @pkt: Entry pointer
1164 *
1165 * Extended sense data.
1166 */
1167 static void
1168 qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1169 {
1170 uint8_t sense_sz = 0;
1171 srb_t *sp = ha->status_srb;
1172 struct scsi_cmnd *cp;
1173
1174 if (sp != NULL && sp->request_sense_length != 0) {
1175 cp = sp->cmd;
1176 if (cp == NULL) {
1177 DEBUG2(printk("%s(): Cmd already returned back to OS "
1178 "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1179 qla_printk(KERN_INFO, ha,
1180 "cmd is NULL: already returned to OS (sp=%p)\n",
1181 sp);
1182
1183 ha->status_srb = NULL;
1184 return;
1185 }
1186
1187 if (sp->request_sense_length > sizeof(pkt->data)) {
1188 sense_sz = sizeof(pkt->data);
1189 } else {
1190 sense_sz = sp->request_sense_length;
1191 }
1192
1193 /* Move sense data. */
1194 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
1195 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1196 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1197 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1198
1199 sp->request_sense_ptr += sense_sz;
1200 sp->request_sense_length -= sense_sz;
1201
1202 /* Place command on done queue. */
1203 if (sp->request_sense_length == 0) {
1204 ha->status_srb = NULL;
1205 qla2x00_sp_compl(ha, sp);
1206 }
1207 }
1208 }
1209
1210 /**
1211 * qla2x00_error_entry() - Process an error entry.
1212 * @ha: SCSI driver HA context
1213 * @pkt: Entry pointer
1214 */
1215 static void
1216 qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1217 {
1218 srb_t *sp;
1219
1220 #if defined(QL_DEBUG_LEVEL_2)
1221 if (pkt->entry_status & RF_INV_E_ORDER)
1222 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1223 else if (pkt->entry_status & RF_INV_E_COUNT)
1224 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1225 else if (pkt->entry_status & RF_INV_E_PARAM)
1226 qla_printk(KERN_ERR, ha,
1227 "%s: Invalid Entry Parameter\n", __func__);
1228 else if (pkt->entry_status & RF_INV_E_TYPE)
1229 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1230 else if (pkt->entry_status & RF_BUSY)
1231 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1232 else
1233 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1234 #endif
1235
1236 /* Validate handle. */
1237 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1238 sp = ha->outstanding_cmds[pkt->handle];
1239 else
1240 sp = NULL;
1241
1242 if (sp) {
1243 /* Free outstanding command slot. */
1244 ha->outstanding_cmds[pkt->handle] = NULL;
1245
1246 /* Bad payload or header */
1247 if (pkt->entry_status &
1248 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1249 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1250 sp->cmd->result = DID_ERROR << 16;
1251 } else if (pkt->entry_status & RF_BUSY) {
1252 sp->cmd->result = DID_BUS_BUSY << 16;
1253 } else {
1254 sp->cmd->result = DID_ERROR << 16;
1255 }
1256 qla2x00_sp_compl(ha, sp);
1257
1258 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1259 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1260 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1261 ha->host_no));
1262 qla_printk(KERN_WARNING, ha,
1263 "Error entry - invalid handle\n");
1264
1265 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1266 if (ha->dpc_wait && !ha->dpc_active)
1267 up(ha->dpc_wait);
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 * @regs:
1405 *
1406 * Called by system whenever the host adapter generates an interrupt.
1407 *
1408 * Returns handled flag.
1409 */
1410 irqreturn_t
1411 qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1412 {
1413 scsi_qla_host_t *ha;
1414 struct device_reg_24xx __iomem *reg;
1415 int status;
1416 unsigned long flags;
1417 unsigned long iter;
1418 uint32_t stat;
1419 uint32_t hccr;
1420 uint16_t mb[4];
1421
1422 ha = (scsi_qla_host_t *) dev_id;
1423 if (!ha) {
1424 printk(KERN_INFO
1425 "%s(): NULL host pointer\n", __func__);
1426 return IRQ_NONE;
1427 }
1428
1429 reg = &ha->iobase->isp24;
1430 status = 0;
1431
1432 spin_lock_irqsave(&ha->hardware_lock, flags);
1433 for (iter = 50; iter--; ) {
1434 stat = RD_REG_DWORD(&reg->host_status);
1435 if (stat & HSRX_RISC_PAUSED) {
1436 hccr = RD_REG_DWORD(&reg->hccr);
1437
1438 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1439 "Dumping firmware!\n", hccr);
1440 qla24xx_fw_dump(ha, 1);
1441
1442 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1443 break;
1444 } else if ((stat & HSRX_RISC_INT) == 0)
1445 break;
1446
1447 switch (stat & 0xff) {
1448 case 0x1:
1449 case 0x2:
1450 case 0x10:
1451 case 0x11:
1452 qla24xx_mbx_completion(ha, MSW(stat));
1453 status |= MBX_INTERRUPT;
1454
1455 break;
1456 case 0x12:
1457 mb[0] = MSW(stat);
1458 mb[1] = RD_REG_WORD(&reg->mailbox1);
1459 mb[2] = RD_REG_WORD(&reg->mailbox2);
1460 mb[3] = RD_REG_WORD(&reg->mailbox3);
1461 qla2x00_async_event(ha, mb);
1462 break;
1463 case 0x13:
1464 qla24xx_process_response_queue(ha);
1465 break;
1466 default:
1467 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1468 "(%d).\n",
1469 ha->host_no, stat & 0xff));
1470 break;
1471 }
1472 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1473 RD_REG_DWORD_RELAXED(&reg->hccr);
1474 }
1475 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1476
1477 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1478 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1479 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1480
1481 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1482 up(&ha->mbx_intr_sem);
1483
1484 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1485 }
1486
1487 return IRQ_HANDLED;
1488 }
1489
1490 /**
1491 * qla24xx_ms_entry() - Process a Management Server entry.
1492 * @ha: SCSI driver HA context
1493 * @index: Response queue out pointer
1494 */
1495 static void
1496 qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1497 {
1498 srb_t *sp;
1499
1500 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1501 __func__, ha->host_no, pkt, pkt->handle));
1502
1503 DEBUG9(printk("%s: ct pkt dump:\n", __func__);)
1504 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx));)
1505
1506 /* Validate handle. */
1507 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1508 sp = ha->outstanding_cmds[pkt->handle];
1509 else
1510 sp = NULL;
1511
1512 if (sp == NULL) {
1513 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1514 ha->host_no));
1515 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1516 ha->host_no));
1517 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1518 pkt->handle);
1519
1520 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1521 return;
1522 }
1523
1524 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1525 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1526
1527 /* Free outstanding command slot. */
1528 ha->outstanding_cmds[pkt->handle] = NULL;
1529
1530 qla2x00_sp_compl(ha, sp);
1531 }
1532
Verdex Pro support