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[SCSI] qla2xxx: Correct issue where fcport is prematurely marked DEAD.
[net-next-2.6.git] / drivers / scsi / qla2xxx / qla_isr.c
CommitLineData
1da177e4
LT		 1/*
2 * QLOGIC LINUX SOFTWARE
3 *
4 * QLogic ISP2x00 device driver for Linux 2.6.x
ae91193c 5 * Copyright (C) 2003-2005 QLogic Corporation
1da177e4
LT		 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
21static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
9a853f71 22static void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
1da177e4
LT		 23static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
24void qla2x00_process_response_queue(struct scsi_qla_host *);
9a853f71 25static void qla2x00_status_entry(scsi_qla_host_t *, void *);
1da177e4
LT		 26static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
27static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
28static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
29
9a853f71
AV		 30void qla24xx_process_response_queue(scsi_qla_host_t *);
31static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
32
1da177e4
LT		 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 */
43irqreturn_t
44qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
45{
46 scsi_qla_host_t *ha;
3d71644c 47 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 48 int status;
49 unsigned long flags;
50 unsigned long iter;
9a853f71 51 uint16_t mb[4];
1da177e4
LT		 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
3d71644c 60 reg = &ha->iobase->isp;
1da177e4
LT		 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. */
9a853f71
AV		 73 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
74 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
75 qla2x00_mbx_completion(ha, mb[0]);
1da177e4 76 status |= MBX_INTERRUPT;
9a853f71
AV		 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);
1da177e4
LT		 82 } else {
83 /*EMPTY*/
84 DEBUG2(printk("scsi(%ld): Unrecognized "
9a853f71
AV		 85 "interrupt type (%d).\n",
86 ha->host_no, mb[0]));
1da177e4
LT		 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
1da177e4
LT		 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
1da177e4
LT		 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 */
123irqreturn_t
124qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
125{
126 scsi_qla_host_t *ha;
3d71644c 127 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 128 int status;
129 unsigned long flags;
130 unsigned long iter;
131 uint32_t stat;
1da177e4 132 uint16_t hccr;
9a853f71 133 uint16_t mb[4];
1da177e4
LT		 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
3d71644c 142 reg = &ha->iobase->isp;
1da177e4
LT		 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,
9a853f71 155 "RISC paused -- HCCR=%x.\n", hccr);
1da177e4
LT		 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
1da177e4 169 switch (stat & 0xff) {
1da177e4
LT		 170 case 0x1:
171 case 0x2:
172 case 0x10:
173 case 0x11:
9a853f71 174 qla2x00_mbx_completion(ha, MSW(stat));
1da177e4
LT		 175 status |= MBX_INTERRUPT;
176
177 /* Release mailbox registers. */
178 WRT_REG_WORD(&reg->semaphore, 0);
179 break;
180 case 0x12:
9a853f71
AV		 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);
1da177e4
LT		 189 break;
190 case 0x15:
9a853f71
AV		 191 mb[0] = MBA_CMPLT_1_16BIT;
192 mb[1] = MSW(stat);
193 qla2x00_async_event(ha, mb);
1da177e4
LT		 194 break;
195 case 0x16:
9a853f71
AV		 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);
1da177e4
LT		 200 break;
201 default:
202 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
9a853f71 203 "(%d).\n",
1da177e4
LT		 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
1da177e4
LT		 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
1da177e4
LT		 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 */
230static void
231qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
232{
233 uint16_t cnt;
234 uint16_t __iomem *wptr;
3d71644c 235 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 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++) {
fa2a1ce5 243 if (IS_QLA2200(ha) && cnt == 8)
1da177e4
LT		 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);
fa2a1ce5 249
1da177e4
LT		 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
9a853f71 265 * @mb: Mailbox registers (0 - 3)
1da177e4
LT		 266 */
267static void
9a853f71 268qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
1da177e4 269{
9a853f71
AV		 270#define LS_UNKNOWN 2
271 static char *link_speeds[5] = { "1", "2", "?", "4", "10" };
1da177e4 272 char *link_speed;
1da177e4
LT		 273 uint16_t handle_cnt;
274 uint16_t cnt;
275 uint32_t handles[5];
3d71644c 276 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 277 uint32_t rscn_entry, host_pid;
278 uint8_t rscn_queue_index;
279
280 /* Setup to process RIO completion. */
281 handle_cnt = 0;
1da177e4
LT		 282 switch (mb[0]) {
283 case MBA_SCSI_COMPLETION:
9a853f71 284 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 285 handle_cnt = 1;
286 break;
287 case MBA_CMPLT_1_16BIT:
9a853f71 288 handles[0] = mb[1];
1da177e4
LT		 289 handle_cnt = 1;
290 mb[0] = MBA_SCSI_COMPLETION;
291 break;
292 case MBA_CMPLT_2_16BIT:
9a853f71
AV		 293 handles[0] = mb[1];
294 handles[1] = mb[2];
1da177e4
LT		 295 handle_cnt = 2;
296 mb[0] = MBA_SCSI_COMPLETION;
297 break;
298 case MBA_CMPLT_3_16BIT:
9a853f71
AV		 299 handles[0] = mb[1];
300 handles[1] = mb[2];
301 handles[2] = mb[3];
1da177e4
LT		 302 handle_cnt = 3;
303 mb[0] = MBA_SCSI_COMPLETION;
304 break;
305 case MBA_CMPLT_4_16BIT:
9a853f71
AV		 306 handles[0] = mb[1];
307 handles[1] = mb[2];
308 handles[2] = mb[3];
1da177e4
LT		 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:
9a853f71
AV		 314 handles[0] = mb[1];
315 handles[1] = mb[2];
316 handles[2] = mb[3];
1da177e4
LT		 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:
9a853f71 323 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 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
abbd8870 358 ha->isp_ops.fw_dump(ha, 1);
1da177e4 359
9a853f71
AV		 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) {
1da177e4
LT		 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 */
1da177e4
LT		 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
1da177e4
LT		 416 break;
417
418 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 419 ha->link_data_rate = 0;
420 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
421 link_speed = link_speeds[0];
422 } else {
9a853f71 423 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 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 */
9a853f71
AV		 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]);
1da177e4
LT		 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;
cca5335c
AV		 454 if (ql2xfdmienable)
455 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
1da177e4
LT		 456
457 /* Update AEN queue. */
458 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
459 break;
460
461 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4
LT		 462 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
463 ha->host_no, mb[1]));
464 qla_printk(KERN_INFO, ha,
465 "LIP reset occured (%x).\n", mb[1]);
466
467 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
468 atomic_set(&ha->loop_state, LOOP_DOWN);
469 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
470 qla2x00_mark_all_devices_lost(ha);
471 }
472
473 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
474
475 ha->operating_mode = LOOP;
476 ha->flags.management_server_logged_in = 0;
477
478 /* Update AEN queue. */
479 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
480
1da177e4
LT		 481 break;
482
483 case MBA_POINT_TO_POINT: /* Point-to-Point */
484 if (IS_QLA2100(ha))
485 break;
486
487 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
488 ha->host_no));
489
490 /*
491 * Until there's a transition from loop down to loop up, treat
492 * this as loop down only.
493 */
494 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
495 atomic_set(&ha->loop_state, LOOP_DOWN);
496 if (!atomic_read(&ha->loop_down_timer))
497 atomic_set(&ha->loop_down_timer,
498 LOOP_DOWN_TIME);
499 qla2x00_mark_all_devices_lost(ha);
500 }
501
502 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
503 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
504 }
505 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
506 break;
507
508 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
509 if (IS_QLA2100(ha))
510 break;
511
1da177e4
LT		 512 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
513 "received.\n",
514 ha->host_no));
515 qla_printk(KERN_INFO, ha,
516 "Configuration change detected: value=%x.\n", mb[1]);
517
518 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
fa2a1ce5 519 atomic_set(&ha->loop_state, LOOP_DOWN);
1da177e4
LT		 520 if (!atomic_read(&ha->loop_down_timer))
521 atomic_set(&ha->loop_down_timer,
522 LOOP_DOWN_TIME);
523 qla2x00_mark_all_devices_lost(ha);
524 }
525
526 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
527 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
528 break;
529
530 case MBA_PORT_UPDATE: /* Port database update */
1da177e4
LT		 531 /*
532 * If a single remote port just logged into (or logged out of)
533 * us, create a new entry in our rscn fcports list and handle
534 * the event like an RSCN.
535 */
536 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
9a853f71
AV		 537 !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA25XX(ha) &&
538 ha->flags.init_done && mb[1] != 0xffff &&
1da177e4
LT		 539 ((ha->operating_mode == P2P && mb[1] != 0) ||
540 (ha->operating_mode != P2P && mb[1] !=
541 SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
542 int rval;
543 fc_port_t *rscn_fcport;
544
545 /* Create new fcport for login. */
546 rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
547 if (rscn_fcport) {
548 DEBUG14(printk("scsi(%ld): Port Update -- "
9a853f71
AV		 549 "creating RSCN fcport %p for %x/%x/%x.\n",
550 ha->host_no, rscn_fcport, mb[1], mb[2],
551 mb[3]));
1da177e4
LT		 552
553 rscn_fcport->loop_id = mb[1];
554 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
555 atomic_set(&rscn_fcport->state,
556 FCS_DEVICE_LOST);
557 list_add_tail(&rscn_fcport->list,
558 &ha->rscn_fcports);
559
560 rval = qla2x00_handle_port_rscn(ha, 0,
561 rscn_fcport, 1);
562 if (rval == QLA_SUCCESS)
563 break;
564 } else {
565 DEBUG14(printk("scsi(%ld): Port Update -- "
566 "-- unable to allocate RSCN fcport "
567 "login.\n", ha->host_no));
568 }
569 }
570
571 /*
572 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
573 * event etc. earlier indicating loop is down) then process
574 * it. Otherwise ignore it and Wait for RSCN to come in.
575 */
576 atomic_set(&ha->loop_down_timer, 0);
577 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
578 atomic_read(&ha->loop_state) != LOOP_DEAD) {
579 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
9a853f71
AV		 580 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
581 mb[2], mb[3]));
1da177e4
LT		 582 break;
583 }
584
585 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
586 ha->host_no));
587 DEBUG(printk(KERN_INFO
9a853f71
AV		 588 "scsi(%ld): Port database changed %04x %04x %04x.\n",
589 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 590
591 /*
592 * Mark all devices as missing so we will login again.
593 */
594 atomic_set(&ha->loop_state, LOOP_UP);
595
596 qla2x00_mark_all_devices_lost(ha);
597
598 ha->flags.rscn_queue_overflow = 1;
599
600 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
601 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
602
603 /* Update AEN queue. */
604 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
605 break;
606
607 case MBA_RSCN_UPDATE: /* State Change Registration */
1da177e4
LT		 608 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
609 ha->host_no));
610 DEBUG(printk(KERN_INFO
611 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
612 ha->host_no, mb[1], mb[2]));
613
614 rscn_entry = (mb[1] << 16) | mb[2];
615 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
616 ha->d_id.b.al_pa;
617 if (rscn_entry == host_pid) {
618 DEBUG(printk(KERN_INFO
619 "scsi(%ld): Ignoring RSCN update to local host "
620 "port ID (%06x)\n",
621 ha->host_no, host_pid));
622 break;
623 }
624
625 rscn_queue_index = ha->rscn_in_ptr + 1;
626 if (rscn_queue_index == MAX_RSCN_COUNT)
627 rscn_queue_index = 0;
628 if (rscn_queue_index != ha->rscn_out_ptr) {
629 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
630 ha->rscn_in_ptr = rscn_queue_index;
631 } else {
632 ha->flags.rscn_queue_overflow = 1;
633 }
634
635 atomic_set(&ha->loop_state, LOOP_UPDATE);
636 atomic_set(&ha->loop_down_timer, 0);
637 ha->flags.management_server_logged_in = 0;
638
639 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
640 set_bit(RSCN_UPDATE, &ha->dpc_flags);
641
642 /* Update AEN queue. */
643 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
644 break;
645
646 /* case MBA_RIO_RESPONSE: */
647 case MBA_ZIO_RESPONSE:
648 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
649 ha->host_no));
650 DEBUG(printk(KERN_INFO
651 "scsi(%ld): [R|Z]IO update completion.\n",
652 ha->host_no));
653
654 qla2x00_process_response_queue(ha);
655 break;
9a853f71
AV		 656
657 case MBA_DISCARD_RND_FRAME:
658 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
659 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
660 break;
1da177e4
LT		 661 }
662}
663
664/**
665 * qla2x00_process_completed_request() - Process a Fast Post response.
666 * @ha: SCSI driver HA context
667 * @index: SRB index
668 */
669static void
670qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
671{
672 srb_t *sp;
673
674 /* Validate handle. */
675 if (index >= MAX_OUTSTANDING_COMMANDS) {
676 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
677 ha->host_no, index));
678 qla_printk(KERN_WARNING, ha,
679 "Invalid SCSI completion handle %d.\n", index);
680
681 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
682 return;
683 }
684
685 sp = ha->outstanding_cmds[index];
686 if (sp) {
687 /* Free outstanding command slot. */
688 ha->outstanding_cmds[index] = NULL;
689
1da177e4
LT		 690 CMD_COMPL_STATUS(sp->cmd) = 0L;
691 CMD_SCSI_STATUS(sp->cmd) = 0L;
692
693 /* Save ISP completion status */
694 sp->cmd->result = DID_OK << 16;
f4f051eb 695 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 696 } else {
697 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
698 ha->host_no));
699 qla_printk(KERN_WARNING, ha,
700 "Invalid ISP SCSI completion handle\n");
701
702 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
703 }
704}
705
706/**
707 * qla2x00_process_response_queue() - Process response queue entries.
708 * @ha: SCSI driver HA context
709 */
710void
711qla2x00_process_response_queue(struct scsi_qla_host *ha)
712{
3d71644c 713 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 714 sts_entry_t *pkt;
715 uint16_t handle_cnt;
716 uint16_t cnt;
717
718 if (!ha->flags.online)
719 return;
720
721 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
722 pkt = (sts_entry_t *)ha->response_ring_ptr;
723
724 ha->rsp_ring_index++;
725 if (ha->rsp_ring_index == ha->response_q_length) {
726 ha->rsp_ring_index = 0;
727 ha->response_ring_ptr = ha->response_ring;
728 } else {
729 ha->response_ring_ptr++;
730 }
731
732 if (pkt->entry_status != 0) {
733 DEBUG3(printk(KERN_INFO
734 "scsi(%ld): Process error entry.\n", ha->host_no));
735
736 qla2x00_error_entry(ha, pkt);
737 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
738 wmb();
739 continue;
740 }
741
742 switch (pkt->entry_type) {
743 case STATUS_TYPE:
744 qla2x00_status_entry(ha, pkt);
745 break;
746 case STATUS_TYPE_21:
747 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
748 for (cnt = 0; cnt < handle_cnt; cnt++) {
749 qla2x00_process_completed_request(ha,
750 ((sts21_entry_t *)pkt)->handle[cnt]);
751 }
752 break;
753 case STATUS_TYPE_22:
754 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
755 for (cnt = 0; cnt < handle_cnt; cnt++) {
756 qla2x00_process_completed_request(ha,
757 ((sts22_entry_t *)pkt)->handle[cnt]);
758 }
759 break;
760 case STATUS_CONT_TYPE:
761 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
762 break;
763 case MS_IOCB_TYPE:
764 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
765 break;
766 case MBX_IOCB_TYPE:
767 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
768 !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
769 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
770 qla2x00_process_iodesc(ha,
771 (struct mbx_entry *)pkt);
772 } else {
773 /* MBX IOCB Type Not Supported. */
774 DEBUG4(printk(KERN_WARNING
775 "scsi(%ld): Received unknown MBX "
776 "IOCB response pkt type=%x "
777 "source=%x entry status=%x.\n",
778 ha->host_no, pkt->entry_type,
779 pkt->sys_define,
780 pkt->entry_status));
781 }
782 break;
783 }
784 /* Fallthrough. */
785 default:
786 /* Type Not Supported. */
787 DEBUG4(printk(KERN_WARNING
788 "scsi(%ld): Received unknown response pkt type %x "
789 "entry status=%x.\n",
790 ha->host_no, pkt->entry_type, pkt->entry_status));
791 break;
792 }
793 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
794 wmb();
795 }
796
797 /* Adjust ring index */
798 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
799}
800
801/**
802 * qla2x00_status_entry() - Process a Status IOCB entry.
803 * @ha: SCSI driver HA context
804 * @pkt: Entry pointer
805 */
806static void
9a853f71 807qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
1da177e4 808{
1da177e4 809 srb_t *sp;
1da177e4
LT		 810 fc_port_t *fcport;
811 struct scsi_cmnd *cp;
9a853f71
AV		 812 sts_entry_t *sts;
813 struct sts_entry_24xx *sts24;
1da177e4
LT		 814 uint16_t comp_status;
815 uint16_t scsi_status;
816 uint8_t lscsi_status;
817 int32_t resid;
9a853f71
AV		 818 uint32_t sense_len, rsp_info_len, resid_len;
819 uint8_t *rsp_info, *sense_data;
820
821 sts = (sts_entry_t *) pkt;
822 sts24 = (struct sts_entry_24xx *) pkt;
823 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
824 comp_status = le16_to_cpu(sts24->comp_status);
825 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
826 } else {
827 comp_status = le16_to_cpu(sts->comp_status);
828 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
829 }
1da177e4
LT		 830
831 /* Fast path completion. */
9a853f71
AV		 832 if (comp_status == CS_COMPLETE && scsi_status == 0) {
833 qla2x00_process_completed_request(ha, sts->handle);
1da177e4
LT		 834
835 return;
836 }
837
838 /* Validate handle. */
9a853f71
AV		 839 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
840 sp = ha->outstanding_cmds[sts->handle];
841 ha->outstanding_cmds[sts->handle] = NULL;
1da177e4
LT		 842 } else
843 sp = NULL;
844
845 if (sp == NULL) {
846 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
847 ha->host_no));
848 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
849
850 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
fa2a1ce5 851 if (ha->dpc_wait && !ha->dpc_active)
1da177e4
LT		 852 up(ha->dpc_wait);
853
854 return;
855 }
856 cp = sp->cmd;
857 if (cp == NULL) {
858 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
859 "pkt->handle=%d sp=%p sp->state:%d\n",
9a853f71 860 ha->host_no, sts->handle, sp, sp->state));
1da177e4
LT		 861 qla_printk(KERN_WARNING, ha,
862 "Command is NULL: already returned to OS (sp=%p)\n", sp);
863
864 return;
865 }
866
9a853f71
AV		 867 lscsi_status = scsi_status & STATUS_MASK;
868 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1da177e4
LT		 869 CMD_COMPL_STATUS(cp) = comp_status;
870 CMD_SCSI_STATUS(cp) = scsi_status;
871
bdf79621 872 fcport = sp->fcport;
1da177e4 873
9a853f71
AV		 874 sense_len = rsp_info_len = resid_len = 0;
875 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
876 sense_len = le32_to_cpu(sts24->sense_len);
877 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
878 resid_len = le32_to_cpu(sts24->rsp_residual_count);
879 rsp_info = sts24->data;
880 sense_data = sts24->data;
881 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
882 } else {
883 sense_len = le16_to_cpu(sts->req_sense_length);
884 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
885 resid_len = le32_to_cpu(sts->residual_length);
886 rsp_info = sts->rsp_info;
887 sense_data = sts->req_sense_data;
888 }
889
1da177e4
LT		 890 /* Check for any FCP transport errors. */
891 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71
AV		 892 /* Sense data lies beyond any FCP RESPONSE data. */
893 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
894 sense_data += rsp_info_len;
895 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 896 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
897 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
9a853f71
AV		 898 "retrying command\n", ha->host_no,
899 cp->device->channel, cp->device->id,
900 cp->device->lun, rsp_info_len, rsp_info[0],
901 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
902 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 903
904 cp->result = DID_BUS_BUSY << 16;
f4f051eb 905 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 906 return;
907 }
908 }
909
910 /*
911 * Based on Host and scsi status generate status code for Linux
912 */
913 switch (comp_status) {
914 case CS_COMPLETE:
915 if (scsi_status == 0) {
916 cp->result = DID_OK << 16;
917 break;
918 }
919 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 920 resid = resid_len;
1da177e4
LT		 921 cp->resid = resid;
922 CMD_RESID_LEN(cp) = resid;
923 }
1da177e4
LT		 924 cp->result = DID_OK << 16 | lscsi_status;
925
926 if (lscsi_status != SS_CHECK_CONDITION)
927 break;
928
9a853f71 929 /* Copy Sense Data into sense buffer. */
1da177e4
LT		 930 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
931
932 if (!(scsi_status & SS_SENSE_LEN_VALID))
933 break;
934
9a853f71
AV		 935 if (sense_len >= sizeof(cp->sense_buffer))
936 sense_len = sizeof(cp->sense_buffer);
1da177e4 937
9a853f71
AV		 938 CMD_ACTUAL_SNSLEN(cp) = sense_len;
939 sp->request_sense_length = sense_len;
1da177e4
LT		 940 sp->request_sense_ptr = cp->sense_buffer;
941
942 if (sp->request_sense_length > 32)
9a853f71 943 sense_len = 32;
1da177e4 944
9a853f71 945 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 946
9a853f71
AV		 947 sp->request_sense_ptr += sense_len;
948 sp->request_sense_length -= sense_len;
1da177e4
LT		 949 if (sp->request_sense_length != 0)
950 ha->status_srb = sp;
951
1da177e4 952 DEBUG5(printk("%s(): Check condition Sense data, "
9a853f71
AV		 953 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
954 ha->host_no, cp->device->channel, cp->device->id,
955 cp->device->lun, cp, cp->serial_number));
956 if (sense_len)
1da177e4
LT		 957 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
958 CMD_ACTUAL_SNSLEN(cp)));
959 break;
960
961 case CS_DATA_UNDERRUN:
962 DEBUG2(printk(KERN_INFO
963 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
9a853f71
AV		 964 ha->host_no, cp->device->id, cp->device->lun, comp_status,
965 scsi_status));
1da177e4 966
9a853f71 967 resid = resid_len;
1da177e4
LT		 968 if (scsi_status & SS_RESIDUAL_UNDER) {
969 cp->resid = resid;
970 CMD_RESID_LEN(cp) = resid;
971 }
972
973 /*
fa2a1ce5 974 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 975 * Status.
976 */
977 if (lscsi_status != 0) {
1da177e4
LT		 978 cp->result = DID_OK << 16 | lscsi_status;
979
980 if (lscsi_status != SS_CHECK_CONDITION)
981 break;
982
983 /* Copy Sense Data into sense buffer */
984 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
985
986 if (!(scsi_status & SS_SENSE_LEN_VALID))
987 break;
988
9a853f71
AV		 989 if (sense_len >= sizeof(cp->sense_buffer))
990 sense_len = sizeof(cp->sense_buffer);
1da177e4 991
9a853f71
AV		 992 CMD_ACTUAL_SNSLEN(cp) = sense_len;
993 sp->request_sense_length = sense_len;
1da177e4
LT		 994 sp->request_sense_ptr = cp->sense_buffer;
995
fa2a1ce5 996 if (sp->request_sense_length > 32)
9a853f71 997 sense_len = 32;
1da177e4 998
9a853f71 999 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 1000
9a853f71
AV		 1001 sp->request_sense_ptr += sense_len;
1002 sp->request_sense_length -= sense_len;
1da177e4
LT		 1003 if (sp->request_sense_length != 0)
1004 ha->status_srb = sp;
1005
1da177e4
LT		 1006 DEBUG5(printk("%s(): Check condition Sense data, "
1007 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
9a853f71
AV		 1008 __func__, ha->host_no, cp->device->channel,
1009 cp->device->id, cp->device->lun, cp,
1da177e4 1010 cp->serial_number));
9a853f71
AV		 1011
1012 if (sense_len)
1da177e4
LT		 1013 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1014 CMD_ACTUAL_SNSLEN(cp)));
1015 } else {
1016 /*
1017 * If RISC reports underrun and target does not report
1018 * it then we must have a lost frame, so tell upper
1019 * layer to retry it by reporting a bus busy.
1020 */
1021 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1022 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1023 "frame(s) detected (%x of %x bytes)..."
9a853f71
AV		 1024 "retrying command.\n", ha->host_no,
1025 cp->device->channel, cp->device->id,
1026 cp->device->lun, resid,
1da177e4
LT		 1027 cp->request_bufflen));
1028
1029 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 1030 break;
1031 }
1032
1033 /* Handle mid-layer underflow */
1034 if ((unsigned)(cp->request_bufflen - resid) <
1035 cp->underflow) {
1036 qla_printk(KERN_INFO, ha,
1037 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1038 "detected (%x of %x bytes)...returning "
9a853f71
AV		 1039 "error status.\n", ha->host_no,
1040 cp->device->channel, cp->device->id,
1041 cp->device->lun, resid,
1da177e4
LT		 1042 cp->request_bufflen);
1043
1044 cp->result = DID_ERROR << 16;
1045 break;
1046 }
1047
1048 /* Everybody online, looking good... */
1049 cp->result = DID_OK << 16;
1050 }
1051 break;
1052
1053 case CS_DATA_OVERRUN:
1054 DEBUG2(printk(KERN_INFO
1055 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
9a853f71
AV		 1056 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1057 scsi_status));
1da177e4
LT		 1058 DEBUG2(printk(KERN_INFO
1059 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1060 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1061 cp->cmnd[4], cp->cmnd[5]));
1062 DEBUG2(printk(KERN_INFO
1063 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1064 "status!\n",
9a853f71 1065 cp->serial_number, cp->request_bufflen, resid_len));
1da177e4
LT		 1066
1067 cp->result = DID_ERROR << 16;
1068 break;
1069
1070 case CS_PORT_LOGGED_OUT:
1071 case CS_PORT_CONFIG_CHG:
1072 case CS_PORT_BUSY:
1073 case CS_INCOMPLETE:
1074 case CS_PORT_UNAVAILABLE:
1075 /*
1076 * If the port is in Target Down state, return all IOs for this
1077 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1078 * retry_queue.
1079 */
1da177e4
LT		 1080 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1081 "pid=%ld, compl status=0x%x, port state=0x%x\n",
9a853f71
AV		 1082 ha->host_no, cp->device->id, cp->device->lun,
1083 cp->serial_number, comp_status,
1da177e4
LT		 1084 atomic_read(&fcport->state)));
1085
f4f051eb 1086 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 1087 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1088 qla2x00_mark_device_lost(ha, fcport, 1);
1089 }
1da177e4
LT		 1090 break;
1091
1092 case CS_RESET:
1093 DEBUG2(printk(KERN_INFO
1094 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1095 ha->host_no, comp_status, scsi_status));
1096
f4f051eb 1097 cp->result = DID_RESET << 16;
1da177e4
LT		 1098 break;
1099
1100 case CS_ABORTED:
fa2a1ce5 1101 /*
1da177e4
LT		 1102 * hv2.19.12 - DID_ABORT does not retry the request if we
1103 * aborted this request then abort otherwise it must be a
1104 * reset.
1105 */
1106 DEBUG2(printk(KERN_INFO
1107 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1108 ha->host_no, comp_status, scsi_status));
1109
1110 cp->result = DID_RESET << 16;
1111 break;
1112
1113 case CS_TIMEOUT:
9a853f71
AV		 1114 cp->result = DID_BUS_BUSY << 16;
1115
1116 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1117 DEBUG2(printk(KERN_INFO
1118 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1119 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1120 cp->device->id, cp->device->lun, comp_status,
1121 scsi_status));
1122 break;
1123 }
1da177e4
LT		 1124 DEBUG2(printk(KERN_INFO
1125 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
9a853f71
AV		 1126 "sflags=%x.\n", ha->host_no, cp->device->channel,
1127 cp->device->id, cp->device->lun, comp_status, scsi_status,
1128 le16_to_cpu(sts->status_flags)));
1da177e4 1129
9a853f71
AV		 1130 /* Check to see if logout occurred. */
1131 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1da177e4 1132 qla2x00_mark_device_lost(ha, fcport, 1);
1da177e4
LT		 1133 break;
1134
1135 case CS_QUEUE_FULL:
1136 DEBUG2(printk(KERN_INFO
1137 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1138 ha->host_no, comp_status, scsi_status));
1139
1140 /* SCSI Mid-Layer handles device queue full */
1141
fa2a1ce5 1142 cp->result = DID_OK << 16 | lscsi_status;
1da177e4 1143
1da177e4
LT		 1144 break;
1145
1146 default:
1147 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
9a853f71 1148 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1da177e4
LT		 1149 qla_printk(KERN_INFO, ha,
1150 "Unknown status detected 0x%x-0x%x.\n",
1151 comp_status, scsi_status);
1152
1153 cp->result = DID_ERROR << 16;
1154 break;
1155 }
1156
1157 /* Place command on done queue. */
1158 if (ha->status_srb == NULL)
f4f051eb 1159 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1160}
1161
1162/**
1163 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1164 * @ha: SCSI driver HA context
1165 * @pkt: Entry pointer
1166 *
1167 * Extended sense data.
1168 */
1169static void
1170qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1171{
1172 uint8_t sense_sz = 0;
1173 srb_t *sp = ha->status_srb;
1174 struct scsi_cmnd *cp;
1175
1176 if (sp != NULL && sp->request_sense_length != 0) {
1177 cp = sp->cmd;
1178 if (cp == NULL) {
1179 DEBUG2(printk("%s(): Cmd already returned back to OS "
1180 "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1181 qla_printk(KERN_INFO, ha,
1182 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1183 sp);
1da177e4
LT		 1184
1185 ha->status_srb = NULL;
1186 return;
1187 }
1188
1189 if (sp->request_sense_length > sizeof(pkt->data)) {
1190 sense_sz = sizeof(pkt->data);
1191 } else {
1192 sense_sz = sp->request_sense_length;
1193 }
1194
1195 /* Move sense data. */
9a853f71
AV		 1196 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
1197 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1198 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1199 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1200
1201 sp->request_sense_ptr += sense_sz;
1202 sp->request_sense_length -= sense_sz;
1203
1204 /* Place command on done queue. */
1205 if (sp->request_sense_length == 0) {
1da177e4 1206 ha->status_srb = NULL;
f4f051eb 1207 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1208 }
1209 }
1210}
1211
1212/**
1213 * qla2x00_error_entry() - Process an error entry.
1214 * @ha: SCSI driver HA context
1215 * @pkt: Entry pointer
1216 */
1217static void
9a853f71 1218qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1da177e4
LT		 1219{
1220 srb_t *sp;
1221
1222#if defined(QL_DEBUG_LEVEL_2)
1223 if (pkt->entry_status & RF_INV_E_ORDER)
1224 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1225 else if (pkt->entry_status & RF_INV_E_COUNT)
1226 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1227 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1228 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1229 "%s: Invalid Entry Parameter\n", __func__);
1230 else if (pkt->entry_status & RF_INV_E_TYPE)
1231 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1232 else if (pkt->entry_status & RF_BUSY)
1233 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1234 else
1235 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1236#endif
1237
1238 /* Validate handle. */
1239 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1240 sp = ha->outstanding_cmds[pkt->handle];
1241 else
1242 sp = NULL;
1243
1244 if (sp) {
1245 /* Free outstanding command slot. */
1246 ha->outstanding_cmds[pkt->handle] = NULL;
354d6b21 1247
1da177e4
LT		 1248 /* Bad payload or header */
1249 if (pkt->entry_status &
1250 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1251 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1252 sp->cmd->result = DID_ERROR << 16;
1253 } else if (pkt->entry_status & RF_BUSY) {
1254 sp->cmd->result = DID_BUS_BUSY << 16;
1255 } else {
1256 sp->cmd->result = DID_ERROR << 16;
1257 }
f4f051eb 1258 qla2x00_sp_compl(ha, sp);
1da177e4 1259
9a853f71
AV		 1260 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1261 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4
LT		 1262 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1263 ha->host_no));
1264 qla_printk(KERN_WARNING, ha,
1265 "Error entry - invalid handle\n");
1266
1267 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
9a853f71 1268 if (ha->dpc_wait && !ha->dpc_active)
1da177e4
LT		 1269 up(ha->dpc_wait);
1270 }
1271}
1272
1273/**
1274 * qla2x00_ms_entry() - Process a Management Server entry.
1275 * @ha: SCSI driver HA context
1276 * @index: Response queue out pointer
1277 */
1278static void
9a853f71 1279qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1da177e4
LT		 1280{
1281 srb_t *sp;
1282
1283 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1284 __func__, ha->host_no, pkt, pkt->handle1));
1285
1286 /* Validate handle. */
1287 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1288 sp = ha->outstanding_cmds[pkt->handle1];
1289 else
1290 sp = NULL;
1291
1292 if (sp == NULL) {
1293 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1294 ha->host_no));
1295 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1296
1297 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1298 return;
1299 }
1300
1301 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1302 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1303
1304 /* Free outstanding command slot. */
1305 ha->outstanding_cmds[pkt->handle1] = NULL;
1306
f4f051eb 1307 qla2x00_sp_compl(ha, sp);
1da177e4 1308}
9a853f71
AV		 1309
1310
1311/**
1312 * qla24xx_mbx_completion() - Process mailbox command completions.
1313 * @ha: SCSI driver HA context
1314 * @mb0: Mailbox0 register
1315 */
1316static void
1317qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1318{
1319 uint16_t cnt;
1320 uint16_t __iomem *wptr;
1321 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1322
1323 /* Load return mailbox registers. */
1324 ha->flags.mbox_int = 1;
1325 ha->mailbox_out[0] = mb0;
1326 wptr = (uint16_t __iomem *)&reg->mailbox1;
1327
1328 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1329 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1330 wptr++;
1331 }
1332
1333 if (ha->mcp) {
1334 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1335 __func__, ha->host_no, ha->mcp->mb[0]));
1336 } else {
1337 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1338 __func__, ha->host_no));
1339 }
1340}
1341
1342/**
1343 * qla24xx_process_response_queue() - Process response queue entries.
1344 * @ha: SCSI driver HA context
1345 */
1346void
1347qla24xx_process_response_queue(struct scsi_qla_host *ha)
1348{
1349 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1350 struct sts_entry_24xx *pkt;
1351
1352 if (!ha->flags.online)
1353 return;
1354
1355 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1356 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1357
1358 ha->rsp_ring_index++;
1359 if (ha->rsp_ring_index == ha->response_q_length) {
1360 ha->rsp_ring_index = 0;
1361 ha->response_ring_ptr = ha->response_ring;
1362 } else {
1363 ha->response_ring_ptr++;
1364 }
1365
1366 if (pkt->entry_status != 0) {
1367 DEBUG3(printk(KERN_INFO
1368 "scsi(%ld): Process error entry.\n", ha->host_no));
1369
9a853f71
AV		 1370 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1371 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1372 wmb();
1373 continue;
1374 }
1375
1376 switch (pkt->entry_type) {
1377 case STATUS_TYPE:
1378 qla2x00_status_entry(ha, pkt);
1379 break;
1380 case STATUS_CONT_TYPE:
1381 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1382 break;
1383 case MS_IOCB_TYPE:
1384 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1385 break;
1386 default:
1387 /* Type Not Supported. */
1388 DEBUG4(printk(KERN_WARNING
1389 "scsi(%ld): Received unknown response pkt type %x "
1390 "entry status=%x.\n",
1391 ha->host_no, pkt->entry_type, pkt->entry_status));
1392 break;
1393 }
1394 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1395 wmb();
1396 }
1397
1398 /* Adjust ring index */
1399 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1400}
1401
1402/**
1403 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1404 * @irq:
1405 * @dev_id: SCSI driver HA context
1406 * @regs:
1407 *
1408 * Called by system whenever the host adapter generates an interrupt.
1409 *
1410 * Returns handled flag.
1411 */
1412irqreturn_t
1413qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1414{
1415 scsi_qla_host_t *ha;
1416 struct device_reg_24xx __iomem *reg;
1417 int status;
1418 unsigned long flags;
1419 unsigned long iter;
1420 uint32_t stat;
1421 uint32_t hccr;
1422 uint16_t mb[4];
1423
1424 ha = (scsi_qla_host_t *) dev_id;
1425 if (!ha) {
1426 printk(KERN_INFO
1427 "%s(): NULL host pointer\n", __func__);
1428 return IRQ_NONE;
1429 }
1430
1431 reg = &ha->iobase->isp24;
1432 status = 0;
1433
1434 spin_lock_irqsave(&ha->hardware_lock, flags);
1435 for (iter = 50; iter--; ) {
1436 stat = RD_REG_DWORD(&reg->host_status);
1437 if (stat & HSRX_RISC_PAUSED) {
1438 hccr = RD_REG_DWORD(&reg->hccr);
1439
1440 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1441 "Dumping firmware!\n", hccr);
1442 qla24xx_fw_dump(ha, 1);
1443
1444 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1445 break;
1446 } else if ((stat & HSRX_RISC_INT) == 0)
1447 break;
1448
1449 switch (stat & 0xff) {
1450 case 0x1:
1451 case 0x2:
1452 case 0x10:
1453 case 0x11:
1454 qla24xx_mbx_completion(ha, MSW(stat));
1455 status |= MBX_INTERRUPT;
1456
1457 break;
1458 case 0x12:
1459 mb[0] = MSW(stat);
1460 mb[1] = RD_REG_WORD(&reg->mailbox1);
1461 mb[2] = RD_REG_WORD(&reg->mailbox2);
1462 mb[3] = RD_REG_WORD(&reg->mailbox3);
1463 qla2x00_async_event(ha, mb);
1464 break;
1465 case 0x13:
1466 qla24xx_process_response_queue(ha);
1467 break;
1468 default:
1469 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1470 "(%d).\n",
1471 ha->host_no, stat & 0xff));
1472 break;
1473 }
1474 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1475 RD_REG_DWORD_RELAXED(&reg->hccr);
1476 }
1477 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1478
1479 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1480 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1481 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1482
1483 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1484 up(&ha->mbx_intr_sem);
1485
1486 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1487 }
1488
1489 return IRQ_HANDLED;
1490}
1491
1492/**
1493 * qla24xx_ms_entry() - Process a Management Server entry.
1494 * @ha: SCSI driver HA context
1495 * @index: Response queue out pointer
1496 */
1497static void
1498qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1499{
1500 srb_t *sp;
1501
1502 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1503 __func__, ha->host_no, pkt, pkt->handle));
1504
1505 DEBUG9(printk("%s: ct pkt dump:\n", __func__);)
1506 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx));)
1507
1508 /* Validate handle. */
1509 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1510 sp = ha->outstanding_cmds[pkt->handle];
1511 else
1512 sp = NULL;
1513
1514 if (sp == NULL) {
1515 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1516 ha->host_no));
1517 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1518 ha->host_no));
1519 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1520 pkt->handle);
1521
1522 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1523 return;
1524 }
1525
1526 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1527 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1528
1529 /* Free outstanding command slot. */
1530 ha->outstanding_cmds[pkt->handle] = NULL;
1531
1532 qla2x00_sp_compl(ha, sp);
1533}
1534
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