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[SCSI] qla2xxx: Correct FC4 feature assignment during RFF_ID.
[linux-2.6-block.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
23 * @regs:
24 *
25 * Called by system whenever the host adapter generates an interrupt.
26 *
27 * Returns handled flag.
28 */
29irqreturn_t
30qla2100_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
31{
32 scsi_qla_host_t *ha;
3d71644c 33 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 34 int status;
35 unsigned long flags;
36 unsigned long iter;
9a853f71 37 uint16_t mb[4];
1da177e4
LT		 38
39 ha = (scsi_qla_host_t *) dev_id;
40 if (!ha) {
41 printk(KERN_INFO
42 "%s(): NULL host pointer\n", __func__);
43 return (IRQ_NONE);
44 }
45
3d71644c 46 reg = &ha->iobase->isp;
1da177e4
LT		 47 status = 0;
48
49 spin_lock_irqsave(&ha->hardware_lock, flags);
50 for (iter = 50; iter--; ) {
51 if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
52 break;
53
54 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
55 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
56 RD_REG_WORD(&reg->hccr);
57
58 /* Get mailbox data. */
9a853f71
AV		 59 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
60 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
61 qla2x00_mbx_completion(ha, mb[0]);
1da177e4 62 status |= MBX_INTERRUPT;
9a853f71
AV		 63 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
64 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
65 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
66 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
67 qla2x00_async_event(ha, mb);
1da177e4
LT		 68 } else {
69 /*EMPTY*/
70 DEBUG2(printk("scsi(%ld): Unrecognized "
9a853f71
AV		 71 "interrupt type (%d).\n",
72 ha->host_no, mb[0]));
1da177e4
LT		 73 }
74 /* Release mailbox registers. */
75 WRT_REG_WORD(&reg->semaphore, 0);
76 RD_REG_WORD(&reg->semaphore);
77 } else {
78 qla2x00_process_response_queue(ha);
79
80 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
81 RD_REG_WORD(&reg->hccr);
82 }
83 }
84 spin_unlock_irqrestore(&ha->hardware_lock, flags);
85
1da177e4
LT		 86 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
87 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
88 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
89
90 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
91 up(&ha->mbx_intr_sem);
92
93 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
94 }
95
1da177e4
LT		 96 return (IRQ_HANDLED);
97}
98
99/**
100 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
101 * @irq:
102 * @dev_id: SCSI driver HA context
103 * @regs:
104 *
105 * Called by system whenever the host adapter generates an interrupt.
106 *
107 * Returns handled flag.
108 */
109irqreturn_t
110qla2300_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
111{
112 scsi_qla_host_t *ha;
3d71644c 113 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 114 int status;
115 unsigned long flags;
116 unsigned long iter;
117 uint32_t stat;
1da177e4 118 uint16_t hccr;
9a853f71 119 uint16_t mb[4];
1da177e4
LT		 120
121 ha = (scsi_qla_host_t *) dev_id;
122 if (!ha) {
123 printk(KERN_INFO
124 "%s(): NULL host pointer\n", __func__);
125 return (IRQ_NONE);
126 }
127
3d71644c 128 reg = &ha->iobase->isp;
1da177e4
LT		 129 status = 0;
130
131 spin_lock_irqsave(&ha->hardware_lock, flags);
132 for (iter = 50; iter--; ) {
133 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
134 if (stat & HSR_RISC_PAUSED) {
135 hccr = RD_REG_WORD(&reg->hccr);
136 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
137 qla_printk(KERN_INFO, ha,
138 "Parity error -- HCCR=%x.\n", hccr);
139 else
140 qla_printk(KERN_INFO, ha,
9a853f71 141 "RISC paused -- HCCR=%x.\n", hccr);
1da177e4
LT		 142
143 /*
144 * Issue a "HARD" reset in order for the RISC
145 * interrupt bit to be cleared. Schedule a big
146 * hammmer to get out of the RISC PAUSED state.
147 */
148 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
149 RD_REG_WORD(&reg->hccr);
150 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
151 break;
152 } else if ((stat & HSR_RISC_INT) == 0)
153 break;
154
1da177e4 155 switch (stat & 0xff) {
1da177e4
LT		 156 case 0x1:
157 case 0x2:
158 case 0x10:
159 case 0x11:
9a853f71 160 qla2x00_mbx_completion(ha, MSW(stat));
1da177e4
LT		 161 status |= MBX_INTERRUPT;
162
163 /* Release mailbox registers. */
164 WRT_REG_WORD(&reg->semaphore, 0);
165 break;
166 case 0x12:
9a853f71
AV		 167 mb[0] = MSW(stat);
168 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
169 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
170 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
171 qla2x00_async_event(ha, mb);
172 break;
173 case 0x13:
174 qla2x00_process_response_queue(ha);
1da177e4
LT		 175 break;
176 case 0x15:
9a853f71
AV		 177 mb[0] = MBA_CMPLT_1_16BIT;
178 mb[1] = MSW(stat);
179 qla2x00_async_event(ha, mb);
1da177e4
LT		 180 break;
181 case 0x16:
9a853f71
AV		 182 mb[0] = MBA_SCSI_COMPLETION;
183 mb[1] = MSW(stat);
184 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
185 qla2x00_async_event(ha, mb);
1da177e4
LT		 186 break;
187 default:
188 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
9a853f71 189 "(%d).\n",
1da177e4
LT		 190 ha->host_no, stat & 0xff));
191 break;
192 }
193 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
194 RD_REG_WORD_RELAXED(&reg->hccr);
195 }
196 spin_unlock_irqrestore(&ha->hardware_lock, flags);
197
1da177e4
LT		 198 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
199 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
200 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
201
202 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
203 up(&ha->mbx_intr_sem);
204
205 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
206 }
207
1da177e4
LT		 208 return (IRQ_HANDLED);
209}
210
211/**
212 * qla2x00_mbx_completion() - Process mailbox command completions.
213 * @ha: SCSI driver HA context
214 * @mb0: Mailbox0 register
215 */
216static void
217qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
218{
219 uint16_t cnt;
220 uint16_t __iomem *wptr;
3d71644c 221 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 222
223 /* Load return mailbox registers. */
224 ha->flags.mbox_int = 1;
225 ha->mailbox_out[0] = mb0;
226 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
227
228 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
fa2a1ce5 229 if (IS_QLA2200(ha) && cnt == 8)
1da177e4
LT		 230 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
231 if (cnt == 4 || cnt == 5)
232 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
233 else
234 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
fa2a1ce5 235
1da177e4
LT		 236 wptr++;
237 }
238
239 if (ha->mcp) {
240 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
241 __func__, ha->host_no, ha->mcp->mb[0]));
242 } else {
243 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
244 __func__, ha->host_no));
245 }
246}
247
248/**
249 * qla2x00_async_event() - Process aynchronous events.
250 * @ha: SCSI driver HA context
9a853f71 251 * @mb: Mailbox registers (0 - 3)
1da177e4
LT		 252 */
253static void
9a853f71 254qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
1da177e4 255{
9a853f71
AV		 256#define LS_UNKNOWN 2
257 static char *link_speeds[5] = { "1", "2", "?", "4", "10" };
1da177e4 258 char *link_speed;
1da177e4
LT		 259 uint16_t handle_cnt;
260 uint16_t cnt;
261 uint32_t handles[5];
3d71644c 262 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 263 uint32_t rscn_entry, host_pid;
264 uint8_t rscn_queue_index;
265
266 /* Setup to process RIO completion. */
267 handle_cnt = 0;
1da177e4
LT		 268 switch (mb[0]) {
269 case MBA_SCSI_COMPLETION:
9a853f71 270 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 271 handle_cnt = 1;
272 break;
273 case MBA_CMPLT_1_16BIT:
9a853f71 274 handles[0] = mb[1];
1da177e4
LT		 275 handle_cnt = 1;
276 mb[0] = MBA_SCSI_COMPLETION;
277 break;
278 case MBA_CMPLT_2_16BIT:
9a853f71
AV		 279 handles[0] = mb[1];
280 handles[1] = mb[2];
1da177e4
LT		 281 handle_cnt = 2;
282 mb[0] = MBA_SCSI_COMPLETION;
283 break;
284 case MBA_CMPLT_3_16BIT:
9a853f71
AV		 285 handles[0] = mb[1];
286 handles[1] = mb[2];
287 handles[2] = mb[3];
1da177e4
LT		 288 handle_cnt = 3;
289 mb[0] = MBA_SCSI_COMPLETION;
290 break;
291 case MBA_CMPLT_4_16BIT:
9a853f71
AV		 292 handles[0] = mb[1];
293 handles[1] = mb[2];
294 handles[2] = mb[3];
1da177e4
LT		 295 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
296 handle_cnt = 4;
297 mb[0] = MBA_SCSI_COMPLETION;
298 break;
299 case MBA_CMPLT_5_16BIT:
9a853f71
AV		 300 handles[0] = mb[1];
301 handles[1] = mb[2];
302 handles[2] = mb[3];
1da177e4
LT		 303 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
304 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
305 handle_cnt = 5;
306 mb[0] = MBA_SCSI_COMPLETION;
307 break;
308 case MBA_CMPLT_2_32BIT:
9a853f71 309 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 310 handles[1] = le32_to_cpu(
311 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
312 RD_MAILBOX_REG(ha, reg, 6));
313 handle_cnt = 2;
314 mb[0] = MBA_SCSI_COMPLETION;
315 break;
316 default:
317 break;
318 }
319
320 switch (mb[0]) {
321 case MBA_SCSI_COMPLETION: /* Fast Post */
322 if (!ha->flags.online)
323 break;
324
325 for (cnt = 0; cnt < handle_cnt; cnt++)
326 qla2x00_process_completed_request(ha, handles[cnt]);
327 break;
328
329 case MBA_RESET: /* Reset */
330 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
331
332 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
333 break;
334
335 case MBA_SYSTEM_ERR: /* System Error */
336 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
337 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
338 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
339
340 qla_printk(KERN_INFO, ha,
341 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
342 mb[1], mb[2], mb[3]);
343
abbd8870 344 ha->isp_ops.fw_dump(ha, 1);
1da177e4 345
9a853f71
AV		 346 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
347 if (mb[1] == 0 && mb[2] == 0) {
348 qla_printk(KERN_ERR, ha,
349 "Unrecoverable Hardware Error: adapter "
350 "marked OFFLINE!\n");
351 ha->flags.online = 0;
352 } else
353 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
354 } else if (mb[1] == 0) {
1da177e4
LT		 355 qla_printk(KERN_INFO, ha,
356 "Unrecoverable Hardware Error: adapter marked "
357 "OFFLINE!\n");
358 ha->flags.online = 0;
359 } else
360 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
361 break;
362
363 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
364 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
365 ha->host_no));
366 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
367
368 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
369 break;
370
371 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
372 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
373 ha->host_no));
374 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
375
376 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
377 break;
378
379 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
380 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
381 ha->host_no));
382 break;
383
384 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
1da177e4
LT		 385 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
386 mb[1]));
387 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
388
389 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
390 atomic_set(&ha->loop_state, LOOP_DOWN);
391 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
392 qla2x00_mark_all_devices_lost(ha);
393 }
394
395 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
396
397 ha->flags.management_server_logged_in = 0;
398
399 /* Update AEN queue. */
400 qla2x00_enqueue_aen(ha, MBA_LIP_OCCURRED, NULL);
401
1da177e4
LT		 402 break;
403
404 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 405 ha->link_data_rate = 0;
406 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
407 link_speed = link_speeds[0];
408 } else {
9a853f71 409 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 410 if (mb[1] < 5)
411 link_speed = link_speeds[mb[1]];
412 ha->link_data_rate = mb[1];
413 }
414
415 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
416 ha->host_no, link_speed));
417 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
418 link_speed);
419
420 ha->flags.management_server_logged_in = 0;
421
422 /* Update AEN queue. */
423 qla2x00_enqueue_aen(ha, MBA_LOOP_UP, NULL);
424 break;
425
426 case MBA_LOOP_DOWN: /* Loop Down Event */
9a853f71
AV		 427 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
428 ha->host_no, mb[1]));
429 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
1da177e4
LT		 430
431 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
432 atomic_set(&ha->loop_state, LOOP_DOWN);
433 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
434 ha->device_flags |= DFLG_NO_CABLE;
435 qla2x00_mark_all_devices_lost(ha);
436 }
437
438 ha->flags.management_server_logged_in = 0;
439 ha->link_data_rate = 0;
cca5335c
AV		 440 if (ql2xfdmienable)
441 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
1da177e4
LT		 442
443 /* Update AEN queue. */
444 qla2x00_enqueue_aen(ha, MBA_LOOP_DOWN, NULL);
445 break;
446
447 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4
LT		 448 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
449 ha->host_no, mb[1]));
450 qla_printk(KERN_INFO, ha,
451 "LIP reset occured (%x).\n", mb[1]);
452
453 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
454 atomic_set(&ha->loop_state, LOOP_DOWN);
455 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
456 qla2x00_mark_all_devices_lost(ha);
457 }
458
459 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
460
461 ha->operating_mode = LOOP;
462 ha->flags.management_server_logged_in = 0;
463
464 /* Update AEN queue. */
465 qla2x00_enqueue_aen(ha, MBA_LIP_RESET, NULL);
466
1da177e4
LT		 467 break;
468
469 case MBA_POINT_TO_POINT: /* Point-to-Point */
470 if (IS_QLA2100(ha))
471 break;
472
473 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
474 ha->host_no));
475
476 /*
477 * Until there's a transition from loop down to loop up, treat
478 * this as loop down only.
479 */
480 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
481 atomic_set(&ha->loop_state, LOOP_DOWN);
482 if (!atomic_read(&ha->loop_down_timer))
483 atomic_set(&ha->loop_down_timer,
484 LOOP_DOWN_TIME);
485 qla2x00_mark_all_devices_lost(ha);
486 }
487
488 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
489 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
490 }
491 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
492 break;
493
494 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
495 if (IS_QLA2100(ha))
496 break;
497
1da177e4
LT		 498 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
499 "received.\n",
500 ha->host_no));
501 qla_printk(KERN_INFO, ha,
502 "Configuration change detected: value=%x.\n", mb[1]);
503
504 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
fa2a1ce5 505 atomic_set(&ha->loop_state, LOOP_DOWN);
1da177e4
LT		 506 if (!atomic_read(&ha->loop_down_timer))
507 atomic_set(&ha->loop_down_timer,
508 LOOP_DOWN_TIME);
509 qla2x00_mark_all_devices_lost(ha);
510 }
511
512 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
513 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
514 break;
515
516 case MBA_PORT_UPDATE: /* Port database update */
1da177e4
LT		 517 /*
518 * If a single remote port just logged into (or logged out of)
519 * us, create a new entry in our rscn fcports list and handle
520 * the event like an RSCN.
521 */
522 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) && !IS_QLA6312(ha) &&
9a853f71
AV		 523 !IS_QLA6322(ha) && !IS_QLA24XX(ha) && !IS_QLA25XX(ha) &&
524 ha->flags.init_done && mb[1] != 0xffff &&
1da177e4
LT		 525 ((ha->operating_mode == P2P && mb[1] != 0) ||
526 (ha->operating_mode != P2P && mb[1] !=
527 SNS_FIRST_LOOP_ID)) && (mb[2] == 6 || mb[2] == 7)) {
528 int rval;
529 fc_port_t *rscn_fcport;
530
531 /* Create new fcport for login. */
532 rscn_fcport = qla2x00_alloc_rscn_fcport(ha, GFP_ATOMIC);
533 if (rscn_fcport) {
534 DEBUG14(printk("scsi(%ld): Port Update -- "
9a853f71
AV		 535 "creating RSCN fcport %p for %x/%x/%x.\n",
536 ha->host_no, rscn_fcport, mb[1], mb[2],
537 mb[3]));
1da177e4
LT		 538
539 rscn_fcport->loop_id = mb[1];
540 rscn_fcport->d_id.b24 = INVALID_PORT_ID;
541 atomic_set(&rscn_fcport->state,
542 FCS_DEVICE_LOST);
543 list_add_tail(&rscn_fcport->list,
544 &ha->rscn_fcports);
545
546 rval = qla2x00_handle_port_rscn(ha, 0,
547 rscn_fcport, 1);
548 if (rval == QLA_SUCCESS)
549 break;
550 } else {
551 DEBUG14(printk("scsi(%ld): Port Update -- "
552 "-- unable to allocate RSCN fcport "
553 "login.\n", ha->host_no));
554 }
555 }
556
557 /*
558 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
559 * event etc. earlier indicating loop is down) then process
560 * it. Otherwise ignore it and Wait for RSCN to come in.
561 */
562 atomic_set(&ha->loop_down_timer, 0);
563 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
564 atomic_read(&ha->loop_state) != LOOP_DEAD) {
565 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
9a853f71
AV		 566 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
567 mb[2], mb[3]));
1da177e4
LT		 568 break;
569 }
570
571 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
572 ha->host_no));
573 DEBUG(printk(KERN_INFO
9a853f71
AV		 574 "scsi(%ld): Port database changed %04x %04x %04x.\n",
575 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 576
577 /*
578 * Mark all devices as missing so we will login again.
579 */
580 atomic_set(&ha->loop_state, LOOP_UP);
581
582 qla2x00_mark_all_devices_lost(ha);
583
584 ha->flags.rscn_queue_overflow = 1;
585
586 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
587 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
588
589 /* Update AEN queue. */
590 qla2x00_enqueue_aen(ha, MBA_PORT_UPDATE, NULL);
591 break;
592
593 case MBA_RSCN_UPDATE: /* State Change Registration */
1da177e4
LT		 594 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
595 ha->host_no));
596 DEBUG(printk(KERN_INFO
597 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
598 ha->host_no, mb[1], mb[2]));
599
600 rscn_entry = (mb[1] << 16) | mb[2];
601 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
602 ha->d_id.b.al_pa;
603 if (rscn_entry == host_pid) {
604 DEBUG(printk(KERN_INFO
605 "scsi(%ld): Ignoring RSCN update to local host "
606 "port ID (%06x)\n",
607 ha->host_no, host_pid));
608 break;
609 }
610
611 rscn_queue_index = ha->rscn_in_ptr + 1;
612 if (rscn_queue_index == MAX_RSCN_COUNT)
613 rscn_queue_index = 0;
614 if (rscn_queue_index != ha->rscn_out_ptr) {
615 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
616 ha->rscn_in_ptr = rscn_queue_index;
617 } else {
618 ha->flags.rscn_queue_overflow = 1;
619 }
620
621 atomic_set(&ha->loop_state, LOOP_UPDATE);
622 atomic_set(&ha->loop_down_timer, 0);
623 ha->flags.management_server_logged_in = 0;
624
625 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
626 set_bit(RSCN_UPDATE, &ha->dpc_flags);
627
628 /* Update AEN queue. */
629 qla2x00_enqueue_aen(ha, MBA_RSCN_UPDATE, &mb[0]);
630 break;
631
632 /* case MBA_RIO_RESPONSE: */
633 case MBA_ZIO_RESPONSE:
634 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
635 ha->host_no));
636 DEBUG(printk(KERN_INFO
637 "scsi(%ld): [R|Z]IO update completion.\n",
638 ha->host_no));
639
4fdfefe5
AV		 640 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
641 qla24xx_process_response_queue(ha);
642 else
643 qla2x00_process_response_queue(ha);
1da177e4 644 break;
9a853f71
AV		 645
646 case MBA_DISCARD_RND_FRAME:
647 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
648 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
649 break;
1da177e4
LT		 650 }
651}
652
653/**
654 * qla2x00_process_completed_request() - Process a Fast Post response.
655 * @ha: SCSI driver HA context
656 * @index: SRB index
657 */
658static void
659qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
660{
661 srb_t *sp;
662
663 /* Validate handle. */
664 if (index >= MAX_OUTSTANDING_COMMANDS) {
665 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
666 ha->host_no, index));
667 qla_printk(KERN_WARNING, ha,
668 "Invalid SCSI completion handle %d.\n", index);
669
670 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
671 return;
672 }
673
674 sp = ha->outstanding_cmds[index];
675 if (sp) {
676 /* Free outstanding command slot. */
677 ha->outstanding_cmds[index] = NULL;
678
1da177e4
LT		 679 CMD_COMPL_STATUS(sp->cmd) = 0L;
680 CMD_SCSI_STATUS(sp->cmd) = 0L;
681
682 /* Save ISP completion status */
683 sp->cmd->result = DID_OK << 16;
f4f051eb 684 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 685 } else {
686 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
687 ha->host_no));
688 qla_printk(KERN_WARNING, ha,
689 "Invalid ISP SCSI completion handle\n");
690
691 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
692 }
693}
694
695/**
696 * qla2x00_process_response_queue() - Process response queue entries.
697 * @ha: SCSI driver HA context
698 */
699void
700qla2x00_process_response_queue(struct scsi_qla_host *ha)
701{
3d71644c 702 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 703 sts_entry_t *pkt;
704 uint16_t handle_cnt;
705 uint16_t cnt;
706
707 if (!ha->flags.online)
708 return;
709
710 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
711 pkt = (sts_entry_t *)ha->response_ring_ptr;
712
713 ha->rsp_ring_index++;
714 if (ha->rsp_ring_index == ha->response_q_length) {
715 ha->rsp_ring_index = 0;
716 ha->response_ring_ptr = ha->response_ring;
717 } else {
718 ha->response_ring_ptr++;
719 }
720
721 if (pkt->entry_status != 0) {
722 DEBUG3(printk(KERN_INFO
723 "scsi(%ld): Process error entry.\n", ha->host_no));
724
725 qla2x00_error_entry(ha, pkt);
726 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
727 wmb();
728 continue;
729 }
730
731 switch (pkt->entry_type) {
732 case STATUS_TYPE:
733 qla2x00_status_entry(ha, pkt);
734 break;
735 case STATUS_TYPE_21:
736 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
737 for (cnt = 0; cnt < handle_cnt; cnt++) {
738 qla2x00_process_completed_request(ha,
739 ((sts21_entry_t *)pkt)->handle[cnt]);
740 }
741 break;
742 case STATUS_TYPE_22:
743 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
744 for (cnt = 0; cnt < handle_cnt; cnt++) {
745 qla2x00_process_completed_request(ha,
746 ((sts22_entry_t *)pkt)->handle[cnt]);
747 }
748 break;
749 case STATUS_CONT_TYPE:
750 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
751 break;
752 case MS_IOCB_TYPE:
753 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
754 break;
755 case MBX_IOCB_TYPE:
756 if (!IS_QLA2100(ha) && !IS_QLA2200(ha) &&
757 !IS_QLA6312(ha) && !IS_QLA6322(ha)) {
758 if (pkt->sys_define == SOURCE_ASYNC_IOCB) {
759 qla2x00_process_iodesc(ha,
760 (struct mbx_entry *)pkt);
761 } else {
762 /* MBX IOCB Type Not Supported. */
763 DEBUG4(printk(KERN_WARNING
764 "scsi(%ld): Received unknown MBX "
765 "IOCB response pkt type=%x "
766 "source=%x entry status=%x.\n",
767 ha->host_no, pkt->entry_type,
768 pkt->sys_define,
769 pkt->entry_status));
770 }
771 break;
772 }
773 /* Fallthrough. */
774 default:
775 /* Type Not Supported. */
776 DEBUG4(printk(KERN_WARNING
777 "scsi(%ld): Received unknown response pkt type %x "
778 "entry status=%x.\n",
779 ha->host_no, pkt->entry_type, pkt->entry_status));
780 break;
781 }
782 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
783 wmb();
784 }
785
786 /* Adjust ring index */
787 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
788}
789
790/**
791 * qla2x00_status_entry() - Process a Status IOCB entry.
792 * @ha: SCSI driver HA context
793 * @pkt: Entry pointer
794 */
795static void
9a853f71 796qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
1da177e4 797{
1da177e4 798 srb_t *sp;
1da177e4
LT		 799 fc_port_t *fcport;
800 struct scsi_cmnd *cp;
9a853f71
AV		 801 sts_entry_t *sts;
802 struct sts_entry_24xx *sts24;
1da177e4
LT		 803 uint16_t comp_status;
804 uint16_t scsi_status;
805 uint8_t lscsi_status;
806 int32_t resid;
9a853f71
AV		 807 uint32_t sense_len, rsp_info_len, resid_len;
808 uint8_t *rsp_info, *sense_data;
809
810 sts = (sts_entry_t *) pkt;
811 sts24 = (struct sts_entry_24xx *) pkt;
812 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
813 comp_status = le16_to_cpu(sts24->comp_status);
814 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
815 } else {
816 comp_status = le16_to_cpu(sts->comp_status);
817 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
818 }
1da177e4
LT		 819
820 /* Fast path completion. */
9a853f71
AV		 821 if (comp_status == CS_COMPLETE && scsi_status == 0) {
822 qla2x00_process_completed_request(ha, sts->handle);
1da177e4
LT		 823
824 return;
825 }
826
827 /* Validate handle. */
9a853f71
AV		 828 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
829 sp = ha->outstanding_cmds[sts->handle];
830 ha->outstanding_cmds[sts->handle] = NULL;
1da177e4
LT		 831 } else
832 sp = NULL;
833
834 if (sp == NULL) {
835 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
836 ha->host_no));
837 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
838
839 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
fa2a1ce5 840 if (ha->dpc_wait && !ha->dpc_active)
1da177e4
LT		 841 up(ha->dpc_wait);
842
843 return;
844 }
845 cp = sp->cmd;
846 if (cp == NULL) {
847 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
848 "pkt->handle=%d sp=%p sp->state:%d\n",
9a853f71 849 ha->host_no, sts->handle, sp, sp->state));
1da177e4
LT		 850 qla_printk(KERN_WARNING, ha,
851 "Command is NULL: already returned to OS (sp=%p)\n", sp);
852
853 return;
854 }
855
9a853f71
AV		 856 lscsi_status = scsi_status & STATUS_MASK;
857 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1da177e4
LT		 858 CMD_COMPL_STATUS(cp) = comp_status;
859 CMD_SCSI_STATUS(cp) = scsi_status;
860
bdf79621 861 fcport = sp->fcport;
1da177e4 862
9a853f71
AV		 863 sense_len = rsp_info_len = resid_len = 0;
864 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
865 sense_len = le32_to_cpu(sts24->sense_len);
866 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
867 resid_len = le32_to_cpu(sts24->rsp_residual_count);
868 rsp_info = sts24->data;
869 sense_data = sts24->data;
870 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
871 } else {
872 sense_len = le16_to_cpu(sts->req_sense_length);
873 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
874 resid_len = le32_to_cpu(sts->residual_length);
875 rsp_info = sts->rsp_info;
876 sense_data = sts->req_sense_data;
877 }
878
1da177e4
LT		 879 /* Check for any FCP transport errors. */
880 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71
AV		 881 /* Sense data lies beyond any FCP RESPONSE data. */
882 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
883 sense_data += rsp_info_len;
884 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 885 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
886 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
9a853f71
AV		 887 "retrying command\n", ha->host_no,
888 cp->device->channel, cp->device->id,
889 cp->device->lun, rsp_info_len, rsp_info[0],
890 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
891 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 892
893 cp->result = DID_BUS_BUSY << 16;
f4f051eb 894 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 895 return;
896 }
897 }
898
899 /*
900 * Based on Host and scsi status generate status code for Linux
901 */
902 switch (comp_status) {
903 case CS_COMPLETE:
904 if (scsi_status == 0) {
905 cp->result = DID_OK << 16;
906 break;
907 }
908 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 909 resid = resid_len;
1da177e4
LT		 910 cp->resid = resid;
911 CMD_RESID_LEN(cp) = resid;
0da69df1
AV		 912
913 if (!lscsi_status &&
914 ((unsigned)(cp->request_bufflen - resid) <
915 cp->underflow)) {
916 qla_printk(KERN_INFO, ha,
917 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
918 "detected (%x of %x bytes)...returning "
919 "error status.\n", ha->host_no,
920 cp->device->channel, cp->device->id,
921 cp->device->lun, resid,
922 cp->request_bufflen);
923
924 cp->result = DID_ERROR << 16;
925 break;
926 }
1da177e4 927 }
1da177e4
LT		 928 cp->result = DID_OK << 16 | lscsi_status;
929
930 if (lscsi_status != SS_CHECK_CONDITION)
931 break;
932
9a853f71 933 /* Copy Sense Data into sense buffer. */
1da177e4
LT		 934 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
935
936 if (!(scsi_status & SS_SENSE_LEN_VALID))
937 break;
938
9a853f71
AV		 939 if (sense_len >= sizeof(cp->sense_buffer))
940 sense_len = sizeof(cp->sense_buffer);
1da177e4 941
9a853f71
AV		 942 CMD_ACTUAL_SNSLEN(cp) = sense_len;
943 sp->request_sense_length = sense_len;
1da177e4
LT		 944 sp->request_sense_ptr = cp->sense_buffer;
945
946 if (sp->request_sense_length > 32)
9a853f71 947 sense_len = 32;
1da177e4 948
9a853f71 949 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 950
9a853f71
AV		 951 sp->request_sense_ptr += sense_len;
952 sp->request_sense_length -= sense_len;
1da177e4
LT		 953 if (sp->request_sense_length != 0)
954 ha->status_srb = sp;
955
1da177e4 956 DEBUG5(printk("%s(): Check condition Sense data, "
9a853f71
AV		 957 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
958 ha->host_no, cp->device->channel, cp->device->id,
959 cp->device->lun, cp, cp->serial_number));
960 if (sense_len)
1da177e4
LT		 961 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
962 CMD_ACTUAL_SNSLEN(cp)));
963 break;
964
965 case CS_DATA_UNDERRUN:
966 DEBUG2(printk(KERN_INFO
967 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x.\n",
9a853f71
AV		 968 ha->host_no, cp->device->id, cp->device->lun, comp_status,
969 scsi_status));
1da177e4 970
9a853f71 971 resid = resid_len;
1da177e4
LT		 972 if (scsi_status & SS_RESIDUAL_UNDER) {
973 cp->resid = resid;
974 CMD_RESID_LEN(cp) = resid;
975 }
976
977 /*
fa2a1ce5 978 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 979 * Status.
980 */
981 if (lscsi_status != 0) {
1da177e4
LT		 982 cp->result = DID_OK << 16 | lscsi_status;
983
984 if (lscsi_status != SS_CHECK_CONDITION)
985 break;
986
987 /* Copy Sense Data into sense buffer */
988 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
989
990 if (!(scsi_status & SS_SENSE_LEN_VALID))
991 break;
992
9a853f71
AV		 993 if (sense_len >= sizeof(cp->sense_buffer))
994 sense_len = sizeof(cp->sense_buffer);
1da177e4 995
9a853f71
AV		 996 CMD_ACTUAL_SNSLEN(cp) = sense_len;
997 sp->request_sense_length = sense_len;
1da177e4
LT		 998 sp->request_sense_ptr = cp->sense_buffer;
999
fa2a1ce5 1000 if (sp->request_sense_length > 32)
9a853f71 1001 sense_len = 32;
1da177e4 1002
9a853f71 1003 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 1004
9a853f71
AV		 1005 sp->request_sense_ptr += sense_len;
1006 sp->request_sense_length -= sense_len;
1da177e4
LT		 1007 if (sp->request_sense_length != 0)
1008 ha->status_srb = sp;
1009
1da177e4
LT		 1010 DEBUG5(printk("%s(): Check condition Sense data, "
1011 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
9a853f71
AV		 1012 __func__, ha->host_no, cp->device->channel,
1013 cp->device->id, cp->device->lun, cp,
1da177e4 1014 cp->serial_number));
9a853f71
AV		 1015
1016 if (sense_len)
1da177e4
LT		 1017 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1018 CMD_ACTUAL_SNSLEN(cp)));
1019 } else {
1020 /*
1021 * If RISC reports underrun and target does not report
1022 * it then we must have a lost frame, so tell upper
1023 * layer to retry it by reporting a bus busy.
1024 */
1025 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1026 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1027 "frame(s) detected (%x of %x bytes)..."
9a853f71
AV		 1028 "retrying command.\n", ha->host_no,
1029 cp->device->channel, cp->device->id,
1030 cp->device->lun, resid,
1da177e4
LT		 1031 cp->request_bufflen));
1032
1033 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 1034 break;
1035 }
1036
1037 /* Handle mid-layer underflow */
1038 if ((unsigned)(cp->request_bufflen - resid) <
1039 cp->underflow) {
1040 qla_printk(KERN_INFO, ha,
1041 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1042 "detected (%x of %x bytes)...returning "
9a853f71
AV		 1043 "error status.\n", ha->host_no,
1044 cp->device->channel, cp->device->id,
1045 cp->device->lun, resid,
1da177e4
LT		 1046 cp->request_bufflen);
1047
1048 cp->result = DID_ERROR << 16;
1049 break;
1050 }
1051
1052 /* Everybody online, looking good... */
1053 cp->result = DID_OK << 16;
1054 }
1055 break;
1056
1057 case CS_DATA_OVERRUN:
1058 DEBUG2(printk(KERN_INFO
1059 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
9a853f71
AV		 1060 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1061 scsi_status));
1da177e4
LT		 1062 DEBUG2(printk(KERN_INFO
1063 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1064 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1065 cp->cmnd[4], cp->cmnd[5]));
1066 DEBUG2(printk(KERN_INFO
1067 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1068 "status!\n",
9a853f71 1069 cp->serial_number, cp->request_bufflen, resid_len));
1da177e4
LT		 1070
1071 cp->result = DID_ERROR << 16;
1072 break;
1073
1074 case CS_PORT_LOGGED_OUT:
1075 case CS_PORT_CONFIG_CHG:
1076 case CS_PORT_BUSY:
1077 case CS_INCOMPLETE:
1078 case CS_PORT_UNAVAILABLE:
1079 /*
1080 * If the port is in Target Down state, return all IOs for this
1081 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1082 * retry_queue.
1083 */
1da177e4
LT		 1084 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1085 "pid=%ld, compl status=0x%x, port state=0x%x\n",
9a853f71
AV		 1086 ha->host_no, cp->device->id, cp->device->lun,
1087 cp->serial_number, comp_status,
1da177e4
LT		 1088 atomic_read(&fcport->state)));
1089
f4f051eb 1090 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 1091 if (atomic_read(&fcport->state) == FCS_ONLINE) {
1092 qla2x00_mark_device_lost(ha, fcport, 1);
1093 }
1da177e4
LT		 1094 break;
1095
1096 case CS_RESET:
1097 DEBUG2(printk(KERN_INFO
1098 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1099 ha->host_no, comp_status, scsi_status));
1100
f4f051eb 1101 cp->result = DID_RESET << 16;
1da177e4
LT		 1102 break;
1103
1104 case CS_ABORTED:
fa2a1ce5 1105 /*
1da177e4
LT		 1106 * hv2.19.12 - DID_ABORT does not retry the request if we
1107 * aborted this request then abort otherwise it must be a
1108 * reset.
1109 */
1110 DEBUG2(printk(KERN_INFO
1111 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1112 ha->host_no, comp_status, scsi_status));
1113
1114 cp->result = DID_RESET << 16;
1115 break;
1116
1117 case CS_TIMEOUT:
9a853f71
AV		 1118 cp->result = DID_BUS_BUSY << 16;
1119
1120 if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
1121 DEBUG2(printk(KERN_INFO
1122 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1123 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1124 cp->device->id, cp->device->lun, comp_status,
1125 scsi_status));
1126 break;
1127 }
1da177e4
LT		 1128 DEBUG2(printk(KERN_INFO
1129 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
9a853f71
AV		 1130 "sflags=%x.\n", ha->host_no, cp->device->channel,
1131 cp->device->id, cp->device->lun, comp_status, scsi_status,
1132 le16_to_cpu(sts->status_flags)));
1da177e4 1133
9a853f71
AV		 1134 /* Check to see if logout occurred. */
1135 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1da177e4 1136 qla2x00_mark_device_lost(ha, fcport, 1);
1da177e4
LT		 1137 break;
1138
1139 case CS_QUEUE_FULL:
1140 DEBUG2(printk(KERN_INFO
1141 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1142 ha->host_no, comp_status, scsi_status));
1143
1144 /* SCSI Mid-Layer handles device queue full */
1145
fa2a1ce5 1146 cp->result = DID_OK << 16 | lscsi_status;
1da177e4 1147
1da177e4
LT		 1148 break;
1149
1150 default:
1151 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
9a853f71 1152 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1da177e4
LT		 1153 qla_printk(KERN_INFO, ha,
1154 "Unknown status detected 0x%x-0x%x.\n",
1155 comp_status, scsi_status);
1156
1157 cp->result = DID_ERROR << 16;
1158 break;
1159 }
1160
1161 /* Place command on done queue. */
1162 if (ha->status_srb == NULL)
f4f051eb 1163 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1164}
1165
1166/**
1167 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1168 * @ha: SCSI driver HA context
1169 * @pkt: Entry pointer
1170 *
1171 * Extended sense data.
1172 */
1173static void
1174qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1175{
1176 uint8_t sense_sz = 0;
1177 srb_t *sp = ha->status_srb;
1178 struct scsi_cmnd *cp;
1179
1180 if (sp != NULL && sp->request_sense_length != 0) {
1181 cp = sp->cmd;
1182 if (cp == NULL) {
1183 DEBUG2(printk("%s(): Cmd already returned back to OS "
1184 "sp=%p sp->state:%d\n", __func__, sp, sp->state));
1185 qla_printk(KERN_INFO, ha,
1186 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1187 sp);
1da177e4
LT		 1188
1189 ha->status_srb = NULL;
1190 return;
1191 }
1192
1193 if (sp->request_sense_length > sizeof(pkt->data)) {
1194 sense_sz = sizeof(pkt->data);
1195 } else {
1196 sense_sz = sp->request_sense_length;
1197 }
1198
1199 /* Move sense data. */
9a853f71
AV		 1200 if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
1201 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1202 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1203 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1204
1205 sp->request_sense_ptr += sense_sz;
1206 sp->request_sense_length -= sense_sz;
1207
1208 /* Place command on done queue. */
1209 if (sp->request_sense_length == 0) {
1da177e4 1210 ha->status_srb = NULL;
f4f051eb 1211 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1212 }
1213 }
1214}
1215
1216/**
1217 * qla2x00_error_entry() - Process an error entry.
1218 * @ha: SCSI driver HA context
1219 * @pkt: Entry pointer
1220 */
1221static void
9a853f71 1222qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1da177e4
LT		 1223{
1224 srb_t *sp;
1225
1226#if defined(QL_DEBUG_LEVEL_2)
1227 if (pkt->entry_status & RF_INV_E_ORDER)
1228 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1229 else if (pkt->entry_status & RF_INV_E_COUNT)
1230 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1231 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1232 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1233 "%s: Invalid Entry Parameter\n", __func__);
1234 else if (pkt->entry_status & RF_INV_E_TYPE)
1235 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1236 else if (pkt->entry_status & RF_BUSY)
1237 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1238 else
1239 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1240#endif
1241
1242 /* Validate handle. */
1243 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1244 sp = ha->outstanding_cmds[pkt->handle];
1245 else
1246 sp = NULL;
1247
1248 if (sp) {
1249 /* Free outstanding command slot. */
1250 ha->outstanding_cmds[pkt->handle] = NULL;
354d6b21 1251
1da177e4
LT		 1252 /* Bad payload or header */
1253 if (pkt->entry_status &
1254 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1255 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1256 sp->cmd->result = DID_ERROR << 16;
1257 } else if (pkt->entry_status & RF_BUSY) {
1258 sp->cmd->result = DID_BUS_BUSY << 16;
1259 } else {
1260 sp->cmd->result = DID_ERROR << 16;
1261 }
f4f051eb 1262 qla2x00_sp_compl(ha, sp);
1da177e4 1263
9a853f71
AV		 1264 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1265 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4
LT		 1266 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1267 ha->host_no));
1268 qla_printk(KERN_WARNING, ha,
1269 "Error entry - invalid handle\n");
1270
1271 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
9a853f71 1272 if (ha->dpc_wait && !ha->dpc_active)
1da177e4
LT		 1273 up(ha->dpc_wait);
1274 }
1275}
1276
1277/**
1278 * qla2x00_ms_entry() - Process a Management Server entry.
1279 * @ha: SCSI driver HA context
1280 * @index: Response queue out pointer
1281 */
1282static void
9a853f71 1283qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1da177e4
LT		 1284{
1285 srb_t *sp;
1286
1287 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1288 __func__, ha->host_no, pkt, pkt->handle1));
1289
1290 /* Validate handle. */
1291 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1292 sp = ha->outstanding_cmds[pkt->handle1];
1293 else
1294 sp = NULL;
1295
1296 if (sp == NULL) {
1297 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1298 ha->host_no));
1299 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1300
1301 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1302 return;
1303 }
1304
1305 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1306 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1307
1308 /* Free outstanding command slot. */
1309 ha->outstanding_cmds[pkt->handle1] = NULL;
1310
f4f051eb 1311 qla2x00_sp_compl(ha, sp);
1da177e4 1312}
9a853f71
AV		 1313
1314
1315/**
1316 * qla24xx_mbx_completion() - Process mailbox command completions.
1317 * @ha: SCSI driver HA context
1318 * @mb0: Mailbox0 register
1319 */
1320static void
1321qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1322{
1323 uint16_t cnt;
1324 uint16_t __iomem *wptr;
1325 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1326
1327 /* Load return mailbox registers. */
1328 ha->flags.mbox_int = 1;
1329 ha->mailbox_out[0] = mb0;
1330 wptr = (uint16_t __iomem *)&reg->mailbox1;
1331
1332 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1333 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1334 wptr++;
1335 }
1336
1337 if (ha->mcp) {
1338 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1339 __func__, ha->host_no, ha->mcp->mb[0]));
1340 } else {
1341 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1342 __func__, ha->host_no));
1343 }
1344}
1345
1346/**
1347 * qla24xx_process_response_queue() - Process response queue entries.
1348 * @ha: SCSI driver HA context
1349 */
1350void
1351qla24xx_process_response_queue(struct scsi_qla_host *ha)
1352{
1353 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1354 struct sts_entry_24xx *pkt;
1355
1356 if (!ha->flags.online)
1357 return;
1358
1359 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1360 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1361
1362 ha->rsp_ring_index++;
1363 if (ha->rsp_ring_index == ha->response_q_length) {
1364 ha->rsp_ring_index = 0;
1365 ha->response_ring_ptr = ha->response_ring;
1366 } else {
1367 ha->response_ring_ptr++;
1368 }
1369
1370 if (pkt->entry_status != 0) {
1371 DEBUG3(printk(KERN_INFO
1372 "scsi(%ld): Process error entry.\n", ha->host_no));
1373
9a853f71
AV		 1374 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1375 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1376 wmb();
1377 continue;
1378 }
1379
1380 switch (pkt->entry_type) {
1381 case STATUS_TYPE:
1382 qla2x00_status_entry(ha, pkt);
1383 break;
1384 case STATUS_CONT_TYPE:
1385 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1386 break;
1387 case MS_IOCB_TYPE:
1388 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1389 break;
1390 default:
1391 /* Type Not Supported. */
1392 DEBUG4(printk(KERN_WARNING
1393 "scsi(%ld): Received unknown response pkt type %x "
1394 "entry status=%x.\n",
1395 ha->host_no, pkt->entry_type, pkt->entry_status));
1396 break;
1397 }
1398 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1399 wmb();
1400 }
1401
1402 /* Adjust ring index */
1403 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1404}
1405
1406/**
1407 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1408 * @irq:
1409 * @dev_id: SCSI driver HA context
1410 * @regs:
1411 *
1412 * Called by system whenever the host adapter generates an interrupt.
1413 *
1414 * Returns handled flag.
1415 */
1416irqreturn_t
1417qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1418{
1419 scsi_qla_host_t *ha;
1420 struct device_reg_24xx __iomem *reg;
1421 int status;
1422 unsigned long flags;
1423 unsigned long iter;
1424 uint32_t stat;
1425 uint32_t hccr;
1426 uint16_t mb[4];
1427
1428 ha = (scsi_qla_host_t *) dev_id;
1429 if (!ha) {
1430 printk(KERN_INFO
1431 "%s(): NULL host pointer\n", __func__);
1432 return IRQ_NONE;
1433 }
1434
1435 reg = &ha->iobase->isp24;
1436 status = 0;
1437
1438 spin_lock_irqsave(&ha->hardware_lock, flags);
1439 for (iter = 50; iter--; ) {
1440 stat = RD_REG_DWORD(&reg->host_status);
1441 if (stat & HSRX_RISC_PAUSED) {
1442 hccr = RD_REG_DWORD(&reg->hccr);
1443
1444 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1445 "Dumping firmware!\n", hccr);
1446 qla24xx_fw_dump(ha, 1);
1447
1448 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1449 break;
1450 } else if ((stat & HSRX_RISC_INT) == 0)
1451 break;
1452
1453 switch (stat & 0xff) {
1454 case 0x1:
1455 case 0x2:
1456 case 0x10:
1457 case 0x11:
1458 qla24xx_mbx_completion(ha, MSW(stat));
1459 status |= MBX_INTERRUPT;
1460
1461 break;
1462 case 0x12:
1463 mb[0] = MSW(stat);
1464 mb[1] = RD_REG_WORD(&reg->mailbox1);
1465 mb[2] = RD_REG_WORD(&reg->mailbox2);
1466 mb[3] = RD_REG_WORD(&reg->mailbox3);
1467 qla2x00_async_event(ha, mb);
1468 break;
1469 case 0x13:
1470 qla24xx_process_response_queue(ha);
1471 break;
1472 default:
1473 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1474 "(%d).\n",
1475 ha->host_no, stat & 0xff));
1476 break;
1477 }
1478 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1479 RD_REG_DWORD_RELAXED(&reg->hccr);
1480 }
1481 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1482
1483 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1484 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1485 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1486
1487 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1488 up(&ha->mbx_intr_sem);
1489
1490 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1491 }
1492
1493 return IRQ_HANDLED;
1494}
1495
1496/**
1497 * qla24xx_ms_entry() - Process a Management Server entry.
1498 * @ha: SCSI driver HA context
1499 * @index: Response queue out pointer
1500 */
1501static void
1502qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1503{
1504 srb_t *sp;
1505
1506 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1507 __func__, ha->host_no, pkt, pkt->handle));
1508
1509 DEBUG9(printk("%s: ct pkt dump:\n", __func__);)
1510 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx));)
1511
1512 /* Validate handle. */
1513 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1514 sp = ha->outstanding_cmds[pkt->handle];
1515 else
1516 sp = NULL;
1517
1518 if (sp == NULL) {
1519 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1520 ha->host_no));
1521 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1522 ha->host_no));
1523 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1524 pkt->handle);
1525
1526 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1527 return;
1528 }
1529
1530 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1531 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1532
1533 /* Free outstanding command slot. */
1534 ha->outstanding_cmds[pkt->handle] = NULL;
1535
1536 qla2x00_sp_compl(ha, sp);
1537}
1538
Linux 6.x block layer and io_uring tree(s)