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[SCSI] qla2xxx: Workaround D3 power-management issues.
[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_isr.c
CommitLineData
1da177e4 1/*
fa90c54f
AV		 2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2005 QLogic Corporation
1da177e4 4 *
fa90c54f 5 * See LICENSE.qla2xxx for copyright and licensing details.
1da177e4
LT		 6 */
7#include "qla_def.h"
8
9static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
9a853f71 10static void qla2x00_async_event(scsi_qla_host_t *, uint16_t *);
1da177e4 11static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
9a853f71 12static void qla2x00_status_entry(scsi_qla_host_t *, void *);
1da177e4
LT		 13static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
14static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
15static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
16
9a853f71
AV		 17static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
18
1da177e4
LT		 19/**
20 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
21 * @irq:
22 * @dev_id: SCSI driver HA context
1da177e4
LT		 23 *
24 * Called by system whenever the host adapter generates an interrupt.
25 *
26 * Returns handled flag.
27 */
28irqreturn_t
7d12e780 29qla2100_intr_handler(int irq, void *dev_id)
1da177e4
LT		 30{
31 scsi_qla_host_t *ha;
3d71644c 32 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 33 int status;
34 unsigned long flags;
35 unsigned long iter;
9a853f71 36 uint16_t mb[4];
1da177e4
LT		 37
38 ha = (scsi_qla_host_t *) dev_id;
39 if (!ha) {
40 printk(KERN_INFO
41 "%s(): NULL host pointer\n", __func__);
42 return (IRQ_NONE);
43 }
44
3d71644c 45 reg = &ha->iobase->isp;
1da177e4
LT		 46 status = 0;
47
48 spin_lock_irqsave(&ha->hardware_lock, flags);
49 for (iter = 50; iter--; ) {
50 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
51 break;
52
53 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
54 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
55 RD_REG_WORD(&reg->hccr);
56
57 /* Get mailbox data. */
9a853f71
AV		 58 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
59 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
60 qla2x00_mbx_completion(ha, mb[0]);
1da177e4 61 status |= MBX_INTERRUPT;
9a853f71
AV		 62 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
63 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
64 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
65 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
66 qla2x00_async_event(ha, mb);
1da177e4
LT		 67 } else {
68 /*EMPTY*/
69 DEBUG2(printk("scsi(%ld): Unrecognized "
9a853f71
AV		 70 "interrupt type (%d).\n",
71 ha->host_no, mb[0]));
1da177e4
LT		 72 }
73 /* Release mailbox registers. */
74 WRT_REG_WORD(&reg->semaphore, 0);
75 RD_REG_WORD(&reg->semaphore);
76 } else {
77 qla2x00_process_response_queue(ha);
78
79 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
80 RD_REG_WORD(&reg->hccr);
81 }
82 }
83 spin_unlock_irqrestore(&ha->hardware_lock, flags);
84
1da177e4
LT		 85 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
86 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
87 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
88
89 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
90 up(&ha->mbx_intr_sem);
91
92 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
93 }
94
1da177e4
LT		 95 return (IRQ_HANDLED);
96}
97
98/**
99 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
100 * @irq:
101 * @dev_id: SCSI driver HA context
1da177e4
LT		 102 *
103 * Called by system whenever the host adapter generates an interrupt.
104 *
105 * Returns handled flag.
106 */
107irqreturn_t
7d12e780 108qla2300_intr_handler(int irq, void *dev_id)
1da177e4
LT		 109{
110 scsi_qla_host_t *ha;
3d71644c 111 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 112 int status;
113 unsigned long flags;
114 unsigned long iter;
115 uint32_t stat;
1da177e4 116 uint16_t hccr;
9a853f71 117 uint16_t mb[4];
1da177e4
LT		 118
119 ha = (scsi_qla_host_t *) dev_id;
120 if (!ha) {
121 printk(KERN_INFO
122 "%s(): NULL host pointer\n", __func__);
123 return (IRQ_NONE);
124 }
125
3d71644c 126 reg = &ha->iobase->isp;
1da177e4
LT		 127 status = 0;
128
129 spin_lock_irqsave(&ha->hardware_lock, flags);
130 for (iter = 50; iter--; ) {
131 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
132 if (stat & HSR_RISC_PAUSED) {
133 hccr = RD_REG_WORD(&reg->hccr);
134 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
135 qla_printk(KERN_INFO, ha,
136 "Parity error -- HCCR=%x.\n", hccr);
137 else
138 qla_printk(KERN_INFO, ha,
9a853f71 139 "RISC paused -- HCCR=%x.\n", hccr);
1da177e4
LT		 140
141 /*
142 * Issue a "HARD" reset in order for the RISC
143 * interrupt bit to be cleared. Schedule a big
144 * hammmer to get out of the RISC PAUSED state.
145 */
146 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
147 RD_REG_WORD(&reg->hccr);
148 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
149 break;
150 } else if ((stat & HSR_RISC_INT) == 0)
151 break;
152
1da177e4 153 switch (stat & 0xff) {
1da177e4
LT		 154 case 0x1:
155 case 0x2:
156 case 0x10:
157 case 0x11:
9a853f71 158 qla2x00_mbx_completion(ha, MSW(stat));
1da177e4
LT		 159 status |= MBX_INTERRUPT;
160
161 /* Release mailbox registers. */
162 WRT_REG_WORD(&reg->semaphore, 0);
163 break;
164 case 0x12:
9a853f71
AV		 165 mb[0] = MSW(stat);
166 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
167 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
168 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
169 qla2x00_async_event(ha, mb);
170 break;
171 case 0x13:
172 qla2x00_process_response_queue(ha);
1da177e4
LT		 173 break;
174 case 0x15:
9a853f71
AV		 175 mb[0] = MBA_CMPLT_1_16BIT;
176 mb[1] = MSW(stat);
177 qla2x00_async_event(ha, mb);
1da177e4
LT		 178 break;
179 case 0x16:
9a853f71
AV		 180 mb[0] = MBA_SCSI_COMPLETION;
181 mb[1] = MSW(stat);
182 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
183 qla2x00_async_event(ha, mb);
1da177e4
LT		 184 break;
185 default:
186 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
9a853f71 187 "(%d).\n",
1da177e4
LT		 188 ha->host_no, stat & 0xff));
189 break;
190 }
191 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
192 RD_REG_WORD_RELAXED(&reg->hccr);
193 }
194 spin_unlock_irqrestore(&ha->hardware_lock, flags);
195
1da177e4
LT		 196 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
197 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
198 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
199
200 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
201 up(&ha->mbx_intr_sem);
202
203 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
204 }
205
1da177e4
LT		 206 return (IRQ_HANDLED);
207}
208
209/**
210 * qla2x00_mbx_completion() - Process mailbox command completions.
211 * @ha: SCSI driver HA context
212 * @mb0: Mailbox0 register
213 */
214static void
215qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
216{
217 uint16_t cnt;
218 uint16_t __iomem *wptr;
3d71644c 219 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 220
221 /* Load return mailbox registers. */
222 ha->flags.mbox_int = 1;
223 ha->mailbox_out[0] = mb0;
224 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
225
226 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
fa2a1ce5 227 if (IS_QLA2200(ha) && cnt == 8)
1da177e4
LT		 228 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
229 if (cnt == 4 || cnt == 5)
230 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
231 else
232 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
fa2a1ce5 233
1da177e4
LT		 234 wptr++;
235 }
236
237 if (ha->mcp) {
238 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
239 __func__, ha->host_no, ha->mcp->mb[0]));
240 } else {
241 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
242 __func__, ha->host_no));
243 }
244}
245
246/**
247 * qla2x00_async_event() - Process aynchronous events.
248 * @ha: SCSI driver HA context
9a853f71 249 * @mb: Mailbox registers (0 - 3)
1da177e4
LT		 250 */
251static void
9a853f71 252qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
1da177e4 253{
9a853f71
AV		 254#define LS_UNKNOWN 2
255 static char *link_speeds[5] = { "1", "2", "?", "4", "10" };
1da177e4 256 char *link_speed;
1da177e4
LT		 257 uint16_t handle_cnt;
258 uint16_t cnt;
259 uint32_t handles[5];
3d71644c 260 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 261 uint32_t rscn_entry, host_pid;
262 uint8_t rscn_queue_index;
263
264 /* Setup to process RIO completion. */
265 handle_cnt = 0;
1da177e4
LT		 266 switch (mb[0]) {
267 case MBA_SCSI_COMPLETION:
9a853f71 268 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 269 handle_cnt = 1;
270 break;
271 case MBA_CMPLT_1_16BIT:
9a853f71 272 handles[0] = mb[1];
1da177e4
LT		 273 handle_cnt = 1;
274 mb[0] = MBA_SCSI_COMPLETION;
275 break;
276 case MBA_CMPLT_2_16BIT:
9a853f71
AV		 277 handles[0] = mb[1];
278 handles[1] = mb[2];
1da177e4
LT		 279 handle_cnt = 2;
280 mb[0] = MBA_SCSI_COMPLETION;
281 break;
282 case MBA_CMPLT_3_16BIT:
9a853f71
AV		 283 handles[0] = mb[1];
284 handles[1] = mb[2];
285 handles[2] = mb[3];
1da177e4
LT		 286 handle_cnt = 3;
287 mb[0] = MBA_SCSI_COMPLETION;
288 break;
289 case MBA_CMPLT_4_16BIT:
9a853f71
AV		 290 handles[0] = mb[1];
291 handles[1] = mb[2];
292 handles[2] = mb[3];
1da177e4
LT		 293 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
294 handle_cnt = 4;
295 mb[0] = MBA_SCSI_COMPLETION;
296 break;
297 case MBA_CMPLT_5_16BIT:
9a853f71
AV		 298 handles[0] = mb[1];
299 handles[1] = mb[2];
300 handles[2] = mb[3];
1da177e4
LT		 301 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
302 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
303 handle_cnt = 5;
304 mb[0] = MBA_SCSI_COMPLETION;
305 break;
306 case MBA_CMPLT_2_32BIT:
9a853f71 307 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 308 handles[1] = le32_to_cpu(
309 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
310 RD_MAILBOX_REG(ha, reg, 6));
311 handle_cnt = 2;
312 mb[0] = MBA_SCSI_COMPLETION;
313 break;
314 default:
315 break;
316 }
317
318 switch (mb[0]) {
319 case MBA_SCSI_COMPLETION: /* Fast Post */
320 if (!ha->flags.online)
321 break;
322
323 for (cnt = 0; cnt < handle_cnt; cnt++)
324 qla2x00_process_completed_request(ha, handles[cnt]);
325 break;
326
327 case MBA_RESET: /* Reset */
328 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
329
330 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
331 break;
332
333 case MBA_SYSTEM_ERR: /* System Error */
334 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
335 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
336 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
337
338 qla_printk(KERN_INFO, ha,
339 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
340 mb[1], mb[2], mb[3]);
341
abbd8870 342 ha->isp_ops.fw_dump(ha, 1);
1da177e4 343
044cc6c8 344 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 345 if (mb[1] == 0 && mb[2] == 0) {
346 qla_printk(KERN_ERR, ha,
347 "Unrecoverable Hardware Error: adapter "
348 "marked OFFLINE!\n");
349 ha->flags.online = 0;
350 } else
351 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
352 } else if (mb[1] == 0) {
1da177e4
LT		 353 qla_printk(KERN_INFO, ha,
354 "Unrecoverable Hardware Error: adapter marked "
355 "OFFLINE!\n");
356 ha->flags.online = 0;
357 } else
358 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
359 break;
360
361 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
362 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
363 ha->host_no));
364 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
365
366 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
367 break;
368
369 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
370 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
371 ha->host_no));
372 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
373
374 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
375 break;
376
377 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
378 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
379 ha->host_no));
380 break;
381
382 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
1da177e4
LT		 383 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
384 mb[1]));
385 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
386
387 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
388 atomic_set(&ha->loop_state, LOOP_DOWN);
389 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 390 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 391 }
392
393 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
394
395 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 396 break;
397
398 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 399 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
400 link_speed = link_speeds[0];
d8b45213 401 ha->link_data_rate = PORT_SPEED_1GB;
1da177e4 402 } else {
9a853f71 403 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 404 if (mb[1] < 5)
405 link_speed = link_speeds[mb[1]];
406 ha->link_data_rate = mb[1];
407 }
408
409 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
410 ha->host_no, link_speed));
411 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
412 link_speed);
413
414 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 415 break;
416
417 case MBA_LOOP_DOWN: /* Loop Down Event */
9a853f71
AV		 418 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
419 ha->host_no, mb[1]));
420 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
1da177e4
LT		 421
422 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
423 atomic_set(&ha->loop_state, LOOP_DOWN);
424 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
425 ha->device_flags |= DFLG_NO_CABLE;
d97994dc 426 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 427 }
428
429 ha->flags.management_server_logged_in = 0;
d8b45213 430 ha->link_data_rate = PORT_SPEED_UNKNOWN;
cca5335c
AV		 431 if (ql2xfdmienable)
432 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
1da177e4
LT		 433 break;
434
435 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4
LT		 436 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
437 ha->host_no, mb[1]));
438 qla_printk(KERN_INFO, ha,
439 "LIP reset occured (%x).\n", mb[1]);
440
441 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
442 atomic_set(&ha->loop_state, LOOP_DOWN);
443 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 444 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 445 }
446
447 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
448
449 ha->operating_mode = LOOP;
450 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 451 break;
452
453 case MBA_POINT_TO_POINT: /* Point-to-Point */
454 if (IS_QLA2100(ha))
455 break;
456
457 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
458 ha->host_no));
459
460 /*
461 * Until there's a transition from loop down to loop up, treat
462 * this as loop down only.
463 */
464 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
465 atomic_set(&ha->loop_state, LOOP_DOWN);
466 if (!atomic_read(&ha->loop_down_timer))
467 atomic_set(&ha->loop_down_timer,
468 LOOP_DOWN_TIME);
d97994dc 469 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 470 }
471
472 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
473 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
474 }
475 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
476 break;
477
478 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
479 if (IS_QLA2100(ha))
480 break;
481
1da177e4
LT		 482 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
483 "received.\n",
484 ha->host_no));
485 qla_printk(KERN_INFO, ha,
486 "Configuration change detected: value=%x.\n", mb[1]);
487
488 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
fa2a1ce5 489 atomic_set(&ha->loop_state, LOOP_DOWN);
1da177e4
LT		 490 if (!atomic_read(&ha->loop_down_timer))
491 atomic_set(&ha->loop_down_timer,
492 LOOP_DOWN_TIME);
d97994dc 493 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 494 }
495
496 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
497 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
498 break;
499
500 case MBA_PORT_UPDATE: /* Port database update */
1da177e4
LT		 501 /*
502 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
503 * event etc. earlier indicating loop is down) then process
504 * it. Otherwise ignore it and Wait for RSCN to come in.
505 */
506 atomic_set(&ha->loop_down_timer, 0);
507 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
508 atomic_read(&ha->loop_state) != LOOP_DEAD) {
509 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
9a853f71
AV		 510 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
511 mb[2], mb[3]));
1da177e4
LT		 512 break;
513 }
514
515 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
516 ha->host_no));
517 DEBUG(printk(KERN_INFO
9a853f71
AV		 518 "scsi(%ld): Port database changed %04x %04x %04x.\n",
519 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 520
521 /*
522 * Mark all devices as missing so we will login again.
523 */
524 atomic_set(&ha->loop_state, LOOP_UP);
525
d97994dc 526 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 527
528 ha->flags.rscn_queue_overflow = 1;
529
530 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
531 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1da177e4
LT		 532 break;
533
534 case MBA_RSCN_UPDATE: /* State Change Registration */
1da177e4
LT		 535 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
536 ha->host_no));
537 DEBUG(printk(KERN_INFO
538 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
539 ha->host_no, mb[1], mb[2]));
540
541 rscn_entry = (mb[1] << 16) | mb[2];
542 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
543 ha->d_id.b.al_pa;
544 if (rscn_entry == host_pid) {
545 DEBUG(printk(KERN_INFO
546 "scsi(%ld): Ignoring RSCN update to local host "
547 "port ID (%06x)\n",
548 ha->host_no, host_pid));
549 break;
550 }
551
552 rscn_queue_index = ha->rscn_in_ptr + 1;
553 if (rscn_queue_index == MAX_RSCN_COUNT)
554 rscn_queue_index = 0;
555 if (rscn_queue_index != ha->rscn_out_ptr) {
556 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
557 ha->rscn_in_ptr = rscn_queue_index;
558 } else {
559 ha->flags.rscn_queue_overflow = 1;
560 }
561
562 atomic_set(&ha->loop_state, LOOP_UPDATE);
563 atomic_set(&ha->loop_down_timer, 0);
564 ha->flags.management_server_logged_in = 0;
565
566 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
567 set_bit(RSCN_UPDATE, &ha->dpc_flags);
1da177e4
LT		 568 break;
569
570 /* case MBA_RIO_RESPONSE: */
571 case MBA_ZIO_RESPONSE:
572 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
573 ha->host_no));
574 DEBUG(printk(KERN_INFO
575 "scsi(%ld): [R|Z]IO update completion.\n",
576 ha->host_no));
577
044cc6c8 578 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
4fdfefe5
AV		 579 qla24xx_process_response_queue(ha);
580 else
581 qla2x00_process_response_queue(ha);
1da177e4 582 break;
9a853f71
AV		 583
584 case MBA_DISCARD_RND_FRAME:
585 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
586 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
587 break;
45ebeb56
AV		 588
589 case MBA_TRACE_NOTIFICATION:
590 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
591 ha->host_no, mb[1], mb[2]));
592 break;
1da177e4
LT		 593 }
594}
595
596/**
597 * qla2x00_process_completed_request() - Process a Fast Post response.
598 * @ha: SCSI driver HA context
599 * @index: SRB index
600 */
601static void
602qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
603{
604 srb_t *sp;
605
606 /* Validate handle. */
607 if (index >= MAX_OUTSTANDING_COMMANDS) {
608 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
609 ha->host_no, index));
610 qla_printk(KERN_WARNING, ha,
611 "Invalid SCSI completion handle %d.\n", index);
612
613 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
614 return;
615 }
616
617 sp = ha->outstanding_cmds[index];
618 if (sp) {
619 /* Free outstanding command slot. */
620 ha->outstanding_cmds[index] = NULL;
621
1da177e4
LT		 622 CMD_COMPL_STATUS(sp->cmd) = 0L;
623 CMD_SCSI_STATUS(sp->cmd) = 0L;
624
625 /* Save ISP completion status */
626 sp->cmd->result = DID_OK << 16;
f4f051eb 627 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 628 } else {
629 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
630 ha->host_no));
631 qla_printk(KERN_WARNING, ha,
632 "Invalid ISP SCSI completion handle\n");
633
634 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
635 }
636}
637
638/**
639 * qla2x00_process_response_queue() - Process response queue entries.
640 * @ha: SCSI driver HA context
641 */
642void
643qla2x00_process_response_queue(struct scsi_qla_host *ha)
644{
3d71644c 645 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 646 sts_entry_t *pkt;
647 uint16_t handle_cnt;
648 uint16_t cnt;
649
650 if (!ha->flags.online)
651 return;
652
653 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
654 pkt = (sts_entry_t *)ha->response_ring_ptr;
655
656 ha->rsp_ring_index++;
657 if (ha->rsp_ring_index == ha->response_q_length) {
658 ha->rsp_ring_index = 0;
659 ha->response_ring_ptr = ha->response_ring;
660 } else {
661 ha->response_ring_ptr++;
662 }
663
664 if (pkt->entry_status != 0) {
665 DEBUG3(printk(KERN_INFO
666 "scsi(%ld): Process error entry.\n", ha->host_no));
667
668 qla2x00_error_entry(ha, pkt);
669 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
670 wmb();
671 continue;
672 }
673
674 switch (pkt->entry_type) {
675 case STATUS_TYPE:
676 qla2x00_status_entry(ha, pkt);
677 break;
678 case STATUS_TYPE_21:
679 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
680 for (cnt = 0; cnt < handle_cnt; cnt++) {
681 qla2x00_process_completed_request(ha,
682 ((sts21_entry_t *)pkt)->handle[cnt]);
683 }
684 break;
685 case STATUS_TYPE_22:
686 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
687 for (cnt = 0; cnt < handle_cnt; cnt++) {
688 qla2x00_process_completed_request(ha,
689 ((sts22_entry_t *)pkt)->handle[cnt]);
690 }
691 break;
692 case STATUS_CONT_TYPE:
693 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
694 break;
695 case MS_IOCB_TYPE:
696 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
697 break;
1da177e4
LT		 698 default:
699 /* Type Not Supported. */
700 DEBUG4(printk(KERN_WARNING
701 "scsi(%ld): Received unknown response pkt type %x "
702 "entry status=%x.\n",
703 ha->host_no, pkt->entry_type, pkt->entry_status));
704 break;
705 }
706 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
707 wmb();
708 }
709
710 /* Adjust ring index */
711 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
712}
713
714/**
715 * qla2x00_status_entry() - Process a Status IOCB entry.
716 * @ha: SCSI driver HA context
717 * @pkt: Entry pointer
718 */
719static void
9a853f71 720qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
1da177e4 721{
1da177e4 722 srb_t *sp;
1da177e4
LT		 723 fc_port_t *fcport;
724 struct scsi_cmnd *cp;
9a853f71
AV		 725 sts_entry_t *sts;
726 struct sts_entry_24xx *sts24;
1da177e4
LT		 727 uint16_t comp_status;
728 uint16_t scsi_status;
729 uint8_t lscsi_status;
730 int32_t resid;
ed17c71b 731 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
9a853f71
AV		 732 uint8_t *rsp_info, *sense_data;
733
734 sts = (sts_entry_t *) pkt;
735 sts24 = (struct sts_entry_24xx *) pkt;
044cc6c8 736 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 737 comp_status = le16_to_cpu(sts24->comp_status);
738 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
739 } else {
740 comp_status = le16_to_cpu(sts->comp_status);
741 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
742 }
1da177e4
LT		 743
744 /* Fast path completion. */
9a853f71
AV		 745 if (comp_status == CS_COMPLETE && scsi_status == 0) {
746 qla2x00_process_completed_request(ha, sts->handle);
1da177e4
LT		 747
748 return;
749 }
750
751 /* Validate handle. */
9a853f71
AV		 752 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
753 sp = ha->outstanding_cmds[sts->handle];
754 ha->outstanding_cmds[sts->handle] = NULL;
1da177e4
LT		 755 } else
756 sp = NULL;
757
758 if (sp == NULL) {
759 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
760 ha->host_no));
761 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
762
763 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 764 qla2xxx_wake_dpc(ha);
1da177e4
LT		 765 return;
766 }
767 cp = sp->cmd;
768 if (cp == NULL) {
769 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
75bc4190 770 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
1da177e4
LT		 771 qla_printk(KERN_WARNING, ha,
772 "Command is NULL: already returned to OS (sp=%p)\n", sp);
773
774 return;
775 }
776
9a853f71
AV		 777 lscsi_status = scsi_status & STATUS_MASK;
778 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1da177e4
LT		 779 CMD_COMPL_STATUS(cp) = comp_status;
780 CMD_SCSI_STATUS(cp) = scsi_status;
781
bdf79621 782 fcport = sp->fcport;
1da177e4 783
ed17c71b 784 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
044cc6c8 785 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 786 sense_len = le32_to_cpu(sts24->sense_len);
787 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
788 resid_len = le32_to_cpu(sts24->rsp_residual_count);
ed17c71b 789 fw_resid_len = le32_to_cpu(sts24->residual_len);
9a853f71
AV		 790 rsp_info = sts24->data;
791 sense_data = sts24->data;
792 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
793 } else {
794 sense_len = le16_to_cpu(sts->req_sense_length);
795 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
796 resid_len = le32_to_cpu(sts->residual_length);
797 rsp_info = sts->rsp_info;
798 sense_data = sts->req_sense_data;
799 }
800
1da177e4
LT		 801 /* Check for any FCP transport errors. */
802 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71 803 /* Sense data lies beyond any FCP RESPONSE data. */
044cc6c8 804 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
9a853f71
AV		 805 sense_data += rsp_info_len;
806 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 807 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
808 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
9a853f71
AV		 809 "retrying command\n", ha->host_no,
810 cp->device->channel, cp->device->id,
811 cp->device->lun, rsp_info_len, rsp_info[0],
812 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
813 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 814
815 cp->result = DID_BUS_BUSY << 16;
f4f051eb 816 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 817 return;
818 }
819 }
820
821 /*
822 * Based on Host and scsi status generate status code for Linux
823 */
824 switch (comp_status) {
825 case CS_COMPLETE:
826 if (scsi_status == 0) {
827 cp->result = DID_OK << 16;
828 break;
829 }
830 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 831 resid = resid_len;
1da177e4
LT		 832 cp->resid = resid;
833 CMD_RESID_LEN(cp) = resid;
0da69df1
AV		 834
835 if (!lscsi_status &&
836 ((unsigned)(cp->request_bufflen - resid) <
837 cp->underflow)) {
838 qla_printk(KERN_INFO, ha,
839 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
840 "detected (%x of %x bytes)...returning "
841 "error status.\n", ha->host_no,
842 cp->device->channel, cp->device->id,
843 cp->device->lun, resid,
844 cp->request_bufflen);
845
846 cp->result = DID_ERROR << 16;
847 break;
848 }
1da177e4 849 }
1da177e4
LT		 850 cp->result = DID_OK << 16 | lscsi_status;
851
852 if (lscsi_status != SS_CHECK_CONDITION)
853 break;
854
9a853f71 855 /* Copy Sense Data into sense buffer. */
1da177e4
LT		 856 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
857
858 if (!(scsi_status & SS_SENSE_LEN_VALID))
859 break;
860
9a853f71
AV		 861 if (sense_len >= sizeof(cp->sense_buffer))
862 sense_len = sizeof(cp->sense_buffer);
1da177e4 863
9a853f71
AV		 864 CMD_ACTUAL_SNSLEN(cp) = sense_len;
865 sp->request_sense_length = sense_len;
1da177e4
LT		 866 sp->request_sense_ptr = cp->sense_buffer;
867
868 if (sp->request_sense_length > 32)
9a853f71 869 sense_len = 32;
1da177e4 870
9a853f71 871 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 872
9a853f71
AV		 873 sp->request_sense_ptr += sense_len;
874 sp->request_sense_length -= sense_len;
1da177e4
LT		 875 if (sp->request_sense_length != 0)
876 ha->status_srb = sp;
877
1da177e4 878 DEBUG5(printk("%s(): Check condition Sense data, "
9a853f71
AV		 879 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
880 ha->host_no, cp->device->channel, cp->device->id,
881 cp->device->lun, cp, cp->serial_number));
882 if (sense_len)
1da177e4
LT		 883 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
884 CMD_ACTUAL_SNSLEN(cp)));
885 break;
886
887 case CS_DATA_UNDERRUN:
9a853f71 888 resid = resid_len;
ed17c71b
RA		 889 /* Use F/W calculated residual length. */
890 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
891 resid = fw_resid_len;
892
1da177e4
LT		 893 if (scsi_status & SS_RESIDUAL_UNDER) {
894 cp->resid = resid;
895 CMD_RESID_LEN(cp) = resid;
e038a1be 896 } else {
897 DEBUG2(printk(KERN_INFO
898 "scsi(%ld:%d:%d) UNDERRUN status detected "
ed17c71b
RA		 899 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
900 "os_underflow=0x%x\n", ha->host_no,
901 cp->device->id, cp->device->lun, comp_status,
902 scsi_status, resid_len, resid, cp->cmnd[0],
903 cp->underflow));
e038a1be 904
1da177e4
LT		 905 }
906
907 /*
fa2a1ce5 908 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 909 * Status.
910 */
911 if (lscsi_status != 0) {
1da177e4
LT		 912 cp->result = DID_OK << 16 | lscsi_status;
913
914 if (lscsi_status != SS_CHECK_CONDITION)
915 break;
916
917 /* Copy Sense Data into sense buffer */
918 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
919
920 if (!(scsi_status & SS_SENSE_LEN_VALID))
921 break;
922
9a853f71
AV		 923 if (sense_len >= sizeof(cp->sense_buffer))
924 sense_len = sizeof(cp->sense_buffer);
1da177e4 925
9a853f71
AV		 926 CMD_ACTUAL_SNSLEN(cp) = sense_len;
927 sp->request_sense_length = sense_len;
1da177e4
LT		 928 sp->request_sense_ptr = cp->sense_buffer;
929
fa2a1ce5 930 if (sp->request_sense_length > 32)
9a853f71 931 sense_len = 32;
1da177e4 932
9a853f71 933 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 934
9a853f71
AV		 935 sp->request_sense_ptr += sense_len;
936 sp->request_sense_length -= sense_len;
1da177e4
LT		 937 if (sp->request_sense_length != 0)
938 ha->status_srb = sp;
939
1da177e4
LT		 940 DEBUG5(printk("%s(): Check condition Sense data, "
941 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
9a853f71
AV		 942 __func__, ha->host_no, cp->device->channel,
943 cp->device->id, cp->device->lun, cp,
1da177e4 944 cp->serial_number));
9a853f71
AV		 945
946 if (sense_len)
1da177e4
LT		 947 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
948 CMD_ACTUAL_SNSLEN(cp)));
949 } else {
950 /*
951 * If RISC reports underrun and target does not report
952 * it then we must have a lost frame, so tell upper
953 * layer to retry it by reporting a bus busy.
954 */
955 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
956 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
957 "frame(s) detected (%x of %x bytes)..."
9a853f71
AV		 958 "retrying command.\n", ha->host_no,
959 cp->device->channel, cp->device->id,
960 cp->device->lun, resid,
1da177e4
LT		 961 cp->request_bufflen));
962
963 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 964 break;
965 }
966
967 /* Handle mid-layer underflow */
968 if ((unsigned)(cp->request_bufflen - resid) <
969 cp->underflow) {
970 qla_printk(KERN_INFO, ha,
971 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
972 "detected (%x of %x bytes)...returning "
9a853f71
AV		 973 "error status.\n", ha->host_no,
974 cp->device->channel, cp->device->id,
975 cp->device->lun, resid,
1da177e4
LT		 976 cp->request_bufflen);
977
978 cp->result = DID_ERROR << 16;
979 break;
980 }
981
982 /* Everybody online, looking good... */
983 cp->result = DID_OK << 16;
984 }
985 break;
986
987 case CS_DATA_OVERRUN:
988 DEBUG2(printk(KERN_INFO
989 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
9a853f71
AV		 990 ha->host_no, cp->device->id, cp->device->lun, comp_status,
991 scsi_status));
1da177e4
LT		 992 DEBUG2(printk(KERN_INFO
993 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
994 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
995 cp->cmnd[4], cp->cmnd[5]));
996 DEBUG2(printk(KERN_INFO
997 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
998 "status!\n",
9a853f71 999 cp->serial_number, cp->request_bufflen, resid_len));
1da177e4
LT		 1000
1001 cp->result = DID_ERROR << 16;
1002 break;
1003
1004 case CS_PORT_LOGGED_OUT:
1005 case CS_PORT_CONFIG_CHG:
1006 case CS_PORT_BUSY:
1007 case CS_INCOMPLETE:
1008 case CS_PORT_UNAVAILABLE:
1009 /*
1010 * If the port is in Target Down state, return all IOs for this
1011 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1012 * retry_queue.
1013 */
1da177e4
LT		 1014 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1015 "pid=%ld, compl status=0x%x, port state=0x%x\n",
9a853f71
AV		 1016 ha->host_no, cp->device->id, cp->device->lun,
1017 cp->serial_number, comp_status,
1da177e4
LT		 1018 atomic_read(&fcport->state)));
1019
f4f051eb 1020 cp->result = DID_BUS_BUSY << 16;
1da177e4 1021 if (atomic_read(&fcport->state) == FCS_ONLINE) {
d97994dc 1022 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4 1023 }
1da177e4
LT		 1024 break;
1025
1026 case CS_RESET:
1027 DEBUG2(printk(KERN_INFO
1028 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1029 ha->host_no, comp_status, scsi_status));
1030
f4f051eb 1031 cp->result = DID_RESET << 16;
1da177e4
LT		 1032 break;
1033
1034 case CS_ABORTED:
fa2a1ce5 1035 /*
1da177e4
LT		 1036 * hv2.19.12 - DID_ABORT does not retry the request if we
1037 * aborted this request then abort otherwise it must be a
1038 * reset.
1039 */
1040 DEBUG2(printk(KERN_INFO
1041 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1042 ha->host_no, comp_status, scsi_status));
1043
1044 cp->result = DID_RESET << 16;
1045 break;
1046
1047 case CS_TIMEOUT:
9a853f71
AV		 1048 cp->result = DID_BUS_BUSY << 16;
1049
044cc6c8 1050 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 1051 DEBUG2(printk(KERN_INFO
1052 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1053 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1054 cp->device->id, cp->device->lun, comp_status,
1055 scsi_status));
1056 break;
1057 }
1da177e4
LT		 1058 DEBUG2(printk(KERN_INFO
1059 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
9a853f71
AV		 1060 "sflags=%x.\n", ha->host_no, cp->device->channel,
1061 cp->device->id, cp->device->lun, comp_status, scsi_status,
1062 le16_to_cpu(sts->status_flags)));
1da177e4 1063
9a853f71
AV		 1064 /* Check to see if logout occurred. */
1065 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
d97994dc 1066 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4
LT		 1067 break;
1068
1069 case CS_QUEUE_FULL:
1070 DEBUG2(printk(KERN_INFO
1071 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1072 ha->host_no, comp_status, scsi_status));
1073
1074 /* SCSI Mid-Layer handles device queue full */
1075
fa2a1ce5 1076 cp->result = DID_OK << 16 | lscsi_status;
1da177e4 1077
1da177e4
LT		 1078 break;
1079
1080 default:
1081 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
9a853f71 1082 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1da177e4
LT		 1083 qla_printk(KERN_INFO, ha,
1084 "Unknown status detected 0x%x-0x%x.\n",
1085 comp_status, scsi_status);
1086
1087 cp->result = DID_ERROR << 16;
1088 break;
1089 }
1090
1091 /* Place command on done queue. */
1092 if (ha->status_srb == NULL)
f4f051eb 1093 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1094}
1095
1096/**
1097 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1098 * @ha: SCSI driver HA context
1099 * @pkt: Entry pointer
1100 *
1101 * Extended sense data.
1102 */
1103static void
1104qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1105{
1106 uint8_t sense_sz = 0;
1107 srb_t *sp = ha->status_srb;
1108 struct scsi_cmnd *cp;
1109
1110 if (sp != NULL && sp->request_sense_length != 0) {
1111 cp = sp->cmd;
1112 if (cp == NULL) {
1113 DEBUG2(printk("%s(): Cmd already returned back to OS "
75bc4190 1114 "sp=%p.\n", __func__, sp));
1da177e4
LT		 1115 qla_printk(KERN_INFO, ha,
1116 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1117 sp);
1da177e4
LT		 1118
1119 ha->status_srb = NULL;
1120 return;
1121 }
1122
1123 if (sp->request_sense_length > sizeof(pkt->data)) {
1124 sense_sz = sizeof(pkt->data);
1125 } else {
1126 sense_sz = sp->request_sense_length;
1127 }
1128
1129 /* Move sense data. */
044cc6c8 1130 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
9a853f71 1131 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1132 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1133 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1134
1135 sp->request_sense_ptr += sense_sz;
1136 sp->request_sense_length -= sense_sz;
1137
1138 /* Place command on done queue. */
1139 if (sp->request_sense_length == 0) {
1da177e4 1140 ha->status_srb = NULL;
f4f051eb 1141 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1142 }
1143 }
1144}
1145
1146/**
1147 * qla2x00_error_entry() - Process an error entry.
1148 * @ha: SCSI driver HA context
1149 * @pkt: Entry pointer
1150 */
1151static void
9a853f71 1152qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1da177e4
LT		 1153{
1154 srb_t *sp;
1155
1156#if defined(QL_DEBUG_LEVEL_2)
1157 if (pkt->entry_status & RF_INV_E_ORDER)
1158 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1159 else if (pkt->entry_status & RF_INV_E_COUNT)
1160 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1161 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1162 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1163 "%s: Invalid Entry Parameter\n", __func__);
1164 else if (pkt->entry_status & RF_INV_E_TYPE)
1165 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1166 else if (pkt->entry_status & RF_BUSY)
1167 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1168 else
1169 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1170#endif
1171
1172 /* Validate handle. */
1173 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1174 sp = ha->outstanding_cmds[pkt->handle];
1175 else
1176 sp = NULL;
1177
1178 if (sp) {
1179 /* Free outstanding command slot. */
1180 ha->outstanding_cmds[pkt->handle] = NULL;
354d6b21 1181
1da177e4
LT		 1182 /* Bad payload or header */
1183 if (pkt->entry_status &
1184 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1185 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1186 sp->cmd->result = DID_ERROR << 16;
1187 } else if (pkt->entry_status & RF_BUSY) {
1188 sp->cmd->result = DID_BUS_BUSY << 16;
1189 } else {
1190 sp->cmd->result = DID_ERROR << 16;
1191 }
f4f051eb 1192 qla2x00_sp_compl(ha, sp);
1da177e4 1193
9a853f71
AV		 1194 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1195 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4
LT		 1196 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1197 ha->host_no));
1198 qla_printk(KERN_WARNING, ha,
1199 "Error entry - invalid handle\n");
1200
1201 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 1202 qla2xxx_wake_dpc(ha);
1da177e4
LT		 1203 }
1204}
1205
1206/**
1207 * qla2x00_ms_entry() - Process a Management Server entry.
1208 * @ha: SCSI driver HA context
1209 * @index: Response queue out pointer
1210 */
1211static void
9a853f71 1212qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1da177e4
LT		 1213{
1214 srb_t *sp;
1215
1216 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1217 __func__, ha->host_no, pkt, pkt->handle1));
1218
1219 /* Validate handle. */
1220 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1221 sp = ha->outstanding_cmds[pkt->handle1];
1222 else
1223 sp = NULL;
1224
1225 if (sp == NULL) {
1226 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1227 ha->host_no));
1228 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1229
1230 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1231 return;
1232 }
1233
1234 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1235 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1236
1237 /* Free outstanding command slot. */
1238 ha->outstanding_cmds[pkt->handle1] = NULL;
1239
f4f051eb 1240 qla2x00_sp_compl(ha, sp);
1da177e4 1241}
9a853f71
AV		 1242
1243
1244/**
1245 * qla24xx_mbx_completion() - Process mailbox command completions.
1246 * @ha: SCSI driver HA context
1247 * @mb0: Mailbox0 register
1248 */
1249static void
1250qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1251{
1252 uint16_t cnt;
1253 uint16_t __iomem *wptr;
1254 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1255
1256 /* Load return mailbox registers. */
1257 ha->flags.mbox_int = 1;
1258 ha->mailbox_out[0] = mb0;
1259 wptr = (uint16_t __iomem *)&reg->mailbox1;
1260
1261 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1262 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1263 wptr++;
1264 }
1265
1266 if (ha->mcp) {
1267 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1268 __func__, ha->host_no, ha->mcp->mb[0]));
1269 } else {
1270 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1271 __func__, ha->host_no));
1272 }
1273}
1274
1275/**
1276 * qla24xx_process_response_queue() - Process response queue entries.
1277 * @ha: SCSI driver HA context
1278 */
1279void
1280qla24xx_process_response_queue(struct scsi_qla_host *ha)
1281{
1282 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1283 struct sts_entry_24xx *pkt;
1284
1285 if (!ha->flags.online)
1286 return;
1287
1288 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1289 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1290
1291 ha->rsp_ring_index++;
1292 if (ha->rsp_ring_index == ha->response_q_length) {
1293 ha->rsp_ring_index = 0;
1294 ha->response_ring_ptr = ha->response_ring;
1295 } else {
1296 ha->response_ring_ptr++;
1297 }
1298
1299 if (pkt->entry_status != 0) {
1300 DEBUG3(printk(KERN_INFO
1301 "scsi(%ld): Process error entry.\n", ha->host_no));
1302
9a853f71
AV		 1303 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1304 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1305 wmb();
1306 continue;
1307 }
1308
1309 switch (pkt->entry_type) {
1310 case STATUS_TYPE:
1311 qla2x00_status_entry(ha, pkt);
1312 break;
1313 case STATUS_CONT_TYPE:
1314 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1315 break;
1316 case MS_IOCB_TYPE:
1317 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1318 break;
1319 default:
1320 /* Type Not Supported. */
1321 DEBUG4(printk(KERN_WARNING
1322 "scsi(%ld): Received unknown response pkt type %x "
1323 "entry status=%x.\n",
1324 ha->host_no, pkt->entry_type, pkt->entry_status));
1325 break;
1326 }
1327 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1328 wmb();
1329 }
1330
1331 /* Adjust ring index */
1332 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1333}
1334
1335/**
1336 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1337 * @irq:
1338 * @dev_id: SCSI driver HA context
9a853f71
AV		 1339 *
1340 * Called by system whenever the host adapter generates an interrupt.
1341 *
1342 * Returns handled flag.
1343 */
1344irqreturn_t
7d12e780 1345qla24xx_intr_handler(int irq, void *dev_id)
9a853f71
AV		 1346{
1347 scsi_qla_host_t *ha;
1348 struct device_reg_24xx __iomem *reg;
1349 int status;
1350 unsigned long flags;
1351 unsigned long iter;
1352 uint32_t stat;
1353 uint32_t hccr;
1354 uint16_t mb[4];
1355
1356 ha = (scsi_qla_host_t *) dev_id;
1357 if (!ha) {
1358 printk(KERN_INFO
1359 "%s(): NULL host pointer\n", __func__);
1360 return IRQ_NONE;
1361 }
1362
1363 reg = &ha->iobase->isp24;
1364 status = 0;
1365
1366 spin_lock_irqsave(&ha->hardware_lock, flags);
1367 for (iter = 50; iter--; ) {
1368 stat = RD_REG_DWORD(&reg->host_status);
1369 if (stat & HSRX_RISC_PAUSED) {
1370 hccr = RD_REG_DWORD(&reg->hccr);
1371
1372 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1373 "Dumping firmware!\n", hccr);
1374 qla24xx_fw_dump(ha, 1);
1375
1376 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1377 break;
1378 } else if ((stat & HSRX_RISC_INT) == 0)
1379 break;
1380
1381 switch (stat & 0xff) {
1382 case 0x1:
1383 case 0x2:
1384 case 0x10:
1385 case 0x11:
1386 qla24xx_mbx_completion(ha, MSW(stat));
1387 status |= MBX_INTERRUPT;
1388
1389 break;
1390 case 0x12:
1391 mb[0] = MSW(stat);
1392 mb[1] = RD_REG_WORD(&reg->mailbox1);
1393 mb[2] = RD_REG_WORD(&reg->mailbox2);
1394 mb[3] = RD_REG_WORD(&reg->mailbox3);
1395 qla2x00_async_event(ha, mb);
1396 break;
1397 case 0x13:
1398 qla24xx_process_response_queue(ha);
1399 break;
1400 default:
1401 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1402 "(%d).\n",
1403 ha->host_no, stat & 0xff));
1404 break;
1405 }
1406 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1407 RD_REG_DWORD_RELAXED(&reg->hccr);
1408 }
1409 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1410
1411 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1412 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1413 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1414
1415 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1416 up(&ha->mbx_intr_sem);
1417
1418 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1419 }
1420
1421 return IRQ_HANDLED;
1422}
1423
1424/**
1425 * qla24xx_ms_entry() - Process a Management Server entry.
1426 * @ha: SCSI driver HA context
1427 * @index: Response queue out pointer
1428 */
1429static void
1430qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1431{
1432 srb_t *sp;
1433
1434 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1435 __func__, ha->host_no, pkt, pkt->handle));
1436
744f11fd
AV		 1437 DEBUG9(printk("%s: ct pkt dump:\n", __func__));
1438 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx)));
9a853f71
AV		 1439
1440 /* Validate handle. */
1441 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1442 sp = ha->outstanding_cmds[pkt->handle];
1443 else
1444 sp = NULL;
1445
1446 if (sp == NULL) {
1447 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1448 ha->host_no));
1449 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1450 ha->host_no));
1451 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1452 pkt->handle);
1453
1454 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1455 return;
1456 }
1457
1458 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1459 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1460
1461 /* Free outstanding command slot. */
1462 ha->outstanding_cmds[pkt->handle] = NULL;
1463
1464 qla2x00_sp_compl(ha, sp);
1465}
1466
Linux kernel - Deliverables
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