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[SCSI] scsi: Scsi_Cmnd convertion in arm subtree
[net-next-2.6.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
044cc6c8 346 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 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);
d97994dc 392 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 393 }
394
395 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
396
397 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 398 break;
399
400 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 401 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
402 link_speed = link_speeds[0];
04414013 403 ha->link_data_rate = LDR_1GB;
1da177e4 404 } else {
9a853f71 405 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 406 if (mb[1] < 5)
407 link_speed = link_speeds[mb[1]];
408 ha->link_data_rate = mb[1];
409 }
410
411 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
412 ha->host_no, link_speed));
413 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
414 link_speed);
415
416 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 417 break;
418
419 case MBA_LOOP_DOWN: /* Loop Down Event */
9a853f71
AV		 420 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
421 ha->host_no, mb[1]));
422 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
1da177e4
LT		 423
424 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
425 atomic_set(&ha->loop_state, LOOP_DOWN);
426 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
427 ha->device_flags |= DFLG_NO_CABLE;
d97994dc 428 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 429 }
430
431 ha->flags.management_server_logged_in = 0;
04414013 432 ha->link_data_rate = LDR_UNKNOWN;
cca5335c
AV		 433 if (ql2xfdmienable)
434 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
1da177e4
LT		 435 break;
436
437 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4
LT		 438 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
439 ha->host_no, mb[1]));
440 qla_printk(KERN_INFO, ha,
441 "LIP reset occured (%x).\n", mb[1]);
442
443 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
444 atomic_set(&ha->loop_state, LOOP_DOWN);
445 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 446 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 447 }
448
449 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
450
451 ha->operating_mode = LOOP;
452 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 453 break;
454
455 case MBA_POINT_TO_POINT: /* Point-to-Point */
456 if (IS_QLA2100(ha))
457 break;
458
459 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
460 ha->host_no));
461
462 /*
463 * Until there's a transition from loop down to loop up, treat
464 * this as loop down only.
465 */
466 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
467 atomic_set(&ha->loop_state, LOOP_DOWN);
468 if (!atomic_read(&ha->loop_down_timer))
469 atomic_set(&ha->loop_down_timer,
470 LOOP_DOWN_TIME);
d97994dc 471 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 472 }
473
474 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
475 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
476 }
477 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
478 break;
479
480 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
481 if (IS_QLA2100(ha))
482 break;
483
1da177e4
LT		 484 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
485 "received.\n",
486 ha->host_no));
487 qla_printk(KERN_INFO, ha,
488 "Configuration change detected: value=%x.\n", mb[1]);
489
490 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
fa2a1ce5 491 atomic_set(&ha->loop_state, LOOP_DOWN);
1da177e4
LT		 492 if (!atomic_read(&ha->loop_down_timer))
493 atomic_set(&ha->loop_down_timer,
494 LOOP_DOWN_TIME);
d97994dc 495 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 496 }
497
498 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
499 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
500 break;
501
502 case MBA_PORT_UPDATE: /* Port database update */
1da177e4
LT		 503 /*
504 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
505 * event etc. earlier indicating loop is down) then process
506 * it. Otherwise ignore it and Wait for RSCN to come in.
507 */
508 atomic_set(&ha->loop_down_timer, 0);
509 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
510 atomic_read(&ha->loop_state) != LOOP_DEAD) {
511 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
9a853f71
AV		 512 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
513 mb[2], mb[3]));
1da177e4
LT		 514 break;
515 }
516
517 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
518 ha->host_no));
519 DEBUG(printk(KERN_INFO
9a853f71
AV		 520 "scsi(%ld): Port database changed %04x %04x %04x.\n",
521 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 522
523 /*
524 * Mark all devices as missing so we will login again.
525 */
526 atomic_set(&ha->loop_state, LOOP_UP);
527
d97994dc 528 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 529
530 ha->flags.rscn_queue_overflow = 1;
531
532 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
533 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1da177e4
LT		 534 break;
535
536 case MBA_RSCN_UPDATE: /* State Change Registration */
1da177e4
LT		 537 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
538 ha->host_no));
539 DEBUG(printk(KERN_INFO
540 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
541 ha->host_no, mb[1], mb[2]));
542
543 rscn_entry = (mb[1] << 16) | mb[2];
544 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
545 ha->d_id.b.al_pa;
546 if (rscn_entry == host_pid) {
547 DEBUG(printk(KERN_INFO
548 "scsi(%ld): Ignoring RSCN update to local host "
549 "port ID (%06x)\n",
550 ha->host_no, host_pid));
551 break;
552 }
553
554 rscn_queue_index = ha->rscn_in_ptr + 1;
555 if (rscn_queue_index == MAX_RSCN_COUNT)
556 rscn_queue_index = 0;
557 if (rscn_queue_index != ha->rscn_out_ptr) {
558 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
559 ha->rscn_in_ptr = rscn_queue_index;
560 } else {
561 ha->flags.rscn_queue_overflow = 1;
562 }
563
564 atomic_set(&ha->loop_state, LOOP_UPDATE);
565 atomic_set(&ha->loop_down_timer, 0);
566 ha->flags.management_server_logged_in = 0;
567
568 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
569 set_bit(RSCN_UPDATE, &ha->dpc_flags);
1da177e4
LT		 570 break;
571
572 /* case MBA_RIO_RESPONSE: */
573 case MBA_ZIO_RESPONSE:
574 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
575 ha->host_no));
576 DEBUG(printk(KERN_INFO
577 "scsi(%ld): [R|Z]IO update completion.\n",
578 ha->host_no));
579
044cc6c8 580 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
4fdfefe5
AV		 581 qla24xx_process_response_queue(ha);
582 else
583 qla2x00_process_response_queue(ha);
1da177e4 584 break;
9a853f71
AV		 585
586 case MBA_DISCARD_RND_FRAME:
587 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
588 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
589 break;
45ebeb56
AV		 590
591 case MBA_TRACE_NOTIFICATION:
592 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
593 ha->host_no, mb[1], mb[2]));
594 break;
1da177e4
LT		 595 }
596}
597
598/**
599 * qla2x00_process_completed_request() - Process a Fast Post response.
600 * @ha: SCSI driver HA context
601 * @index: SRB index
602 */
603static void
604qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
605{
606 srb_t *sp;
607
608 /* Validate handle. */
609 if (index >= MAX_OUTSTANDING_COMMANDS) {
610 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
611 ha->host_no, index));
612 qla_printk(KERN_WARNING, ha,
613 "Invalid SCSI completion handle %d.\n", index);
614
615 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
616 return;
617 }
618
619 sp = ha->outstanding_cmds[index];
620 if (sp) {
621 /* Free outstanding command slot. */
622 ha->outstanding_cmds[index] = NULL;
623
1da177e4
LT		 624 CMD_COMPL_STATUS(sp->cmd) = 0L;
625 CMD_SCSI_STATUS(sp->cmd) = 0L;
626
627 /* Save ISP completion status */
628 sp->cmd->result = DID_OK << 16;
f4f051eb 629 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 630 } else {
631 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
632 ha->host_no));
633 qla_printk(KERN_WARNING, ha,
634 "Invalid ISP SCSI completion handle\n");
635
636 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
637 }
638}
639
640/**
641 * qla2x00_process_response_queue() - Process response queue entries.
642 * @ha: SCSI driver HA context
643 */
644void
645qla2x00_process_response_queue(struct scsi_qla_host *ha)
646{
3d71644c 647 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 648 sts_entry_t *pkt;
649 uint16_t handle_cnt;
650 uint16_t cnt;
651
652 if (!ha->flags.online)
653 return;
654
655 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
656 pkt = (sts_entry_t *)ha->response_ring_ptr;
657
658 ha->rsp_ring_index++;
659 if (ha->rsp_ring_index == ha->response_q_length) {
660 ha->rsp_ring_index = 0;
661 ha->response_ring_ptr = ha->response_ring;
662 } else {
663 ha->response_ring_ptr++;
664 }
665
666 if (pkt->entry_status != 0) {
667 DEBUG3(printk(KERN_INFO
668 "scsi(%ld): Process error entry.\n", ha->host_no));
669
670 qla2x00_error_entry(ha, pkt);
671 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
672 wmb();
673 continue;
674 }
675
676 switch (pkt->entry_type) {
677 case STATUS_TYPE:
678 qla2x00_status_entry(ha, pkt);
679 break;
680 case STATUS_TYPE_21:
681 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
682 for (cnt = 0; cnt < handle_cnt; cnt++) {
683 qla2x00_process_completed_request(ha,
684 ((sts21_entry_t *)pkt)->handle[cnt]);
685 }
686 break;
687 case STATUS_TYPE_22:
688 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
689 for (cnt = 0; cnt < handle_cnt; cnt++) {
690 qla2x00_process_completed_request(ha,
691 ((sts22_entry_t *)pkt)->handle[cnt]);
692 }
693 break;
694 case STATUS_CONT_TYPE:
695 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
696 break;
697 case MS_IOCB_TYPE:
698 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
699 break;
1da177e4
LT		 700 default:
701 /* Type Not Supported. */
702 DEBUG4(printk(KERN_WARNING
703 "scsi(%ld): Received unknown response pkt type %x "
704 "entry status=%x.\n",
705 ha->host_no, pkt->entry_type, pkt->entry_status));
706 break;
707 }
708 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
709 wmb();
710 }
711
712 /* Adjust ring index */
713 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
714}
715
716/**
717 * qla2x00_status_entry() - Process a Status IOCB entry.
718 * @ha: SCSI driver HA context
719 * @pkt: Entry pointer
720 */
721static void
9a853f71 722qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
1da177e4 723{
1da177e4 724 srb_t *sp;
1da177e4
LT		 725 fc_port_t *fcport;
726 struct scsi_cmnd *cp;
9a853f71
AV		 727 sts_entry_t *sts;
728 struct sts_entry_24xx *sts24;
1da177e4
LT		 729 uint16_t comp_status;
730 uint16_t scsi_status;
731 uint8_t lscsi_status;
732 int32_t resid;
ed17c71b 733 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
9a853f71
AV		 734 uint8_t *rsp_info, *sense_data;
735
736 sts = (sts_entry_t *) pkt;
737 sts24 = (struct sts_entry_24xx *) pkt;
044cc6c8 738 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 739 comp_status = le16_to_cpu(sts24->comp_status);
740 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
741 } else {
742 comp_status = le16_to_cpu(sts->comp_status);
743 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
744 }
1da177e4
LT		 745
746 /* Fast path completion. */
9a853f71
AV		 747 if (comp_status == CS_COMPLETE && scsi_status == 0) {
748 qla2x00_process_completed_request(ha, sts->handle);
1da177e4
LT		 749
750 return;
751 }
752
753 /* Validate handle. */
9a853f71
AV		 754 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
755 sp = ha->outstanding_cmds[sts->handle];
756 ha->outstanding_cmds[sts->handle] = NULL;
1da177e4
LT		 757 } else
758 sp = NULL;
759
760 if (sp == NULL) {
761 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
762 ha->host_no));
763 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
764
765 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 766 qla2xxx_wake_dpc(ha);
1da177e4
LT		 767 return;
768 }
769 cp = sp->cmd;
770 if (cp == NULL) {
771 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
75bc4190 772 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
1da177e4
LT		 773 qla_printk(KERN_WARNING, ha,
774 "Command is NULL: already returned to OS (sp=%p)\n", sp);
775
776 return;
777 }
778
9a853f71
AV		 779 lscsi_status = scsi_status & STATUS_MASK;
780 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1da177e4
LT		 781 CMD_COMPL_STATUS(cp) = comp_status;
782 CMD_SCSI_STATUS(cp) = scsi_status;
783
bdf79621 784 fcport = sp->fcport;
1da177e4 785
ed17c71b 786 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
044cc6c8 787 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 788 sense_len = le32_to_cpu(sts24->sense_len);
789 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
790 resid_len = le32_to_cpu(sts24->rsp_residual_count);
ed17c71b 791 fw_resid_len = le32_to_cpu(sts24->residual_len);
9a853f71
AV		 792 rsp_info = sts24->data;
793 sense_data = sts24->data;
794 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
795 } else {
796 sense_len = le16_to_cpu(sts->req_sense_length);
797 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
798 resid_len = le32_to_cpu(sts->residual_length);
799 rsp_info = sts->rsp_info;
800 sense_data = sts->req_sense_data;
801 }
802
1da177e4
LT		 803 /* Check for any FCP transport errors. */
804 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71 805 /* Sense data lies beyond any FCP RESPONSE data. */
044cc6c8 806 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
9a853f71
AV		 807 sense_data += rsp_info_len;
808 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 809 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
810 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
9a853f71
AV		 811 "retrying command\n", ha->host_no,
812 cp->device->channel, cp->device->id,
813 cp->device->lun, rsp_info_len, rsp_info[0],
814 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
815 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 816
817 cp->result = DID_BUS_BUSY << 16;
f4f051eb 818 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 819 return;
820 }
821 }
822
823 /*
824 * Based on Host and scsi status generate status code for Linux
825 */
826 switch (comp_status) {
827 case CS_COMPLETE:
828 if (scsi_status == 0) {
829 cp->result = DID_OK << 16;
830 break;
831 }
832 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 833 resid = resid_len;
1da177e4
LT		 834 cp->resid = resid;
835 CMD_RESID_LEN(cp) = resid;
0da69df1
AV		 836
837 if (!lscsi_status &&
838 ((unsigned)(cp->request_bufflen - resid) <
839 cp->underflow)) {
840 qla_printk(KERN_INFO, ha,
841 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
842 "detected (%x of %x bytes)...returning "
843 "error status.\n", ha->host_no,
844 cp->device->channel, cp->device->id,
845 cp->device->lun, resid,
846 cp->request_bufflen);
847
848 cp->result = DID_ERROR << 16;
849 break;
850 }
1da177e4 851 }
1da177e4
LT		 852 cp->result = DID_OK << 16 | lscsi_status;
853
854 if (lscsi_status != SS_CHECK_CONDITION)
855 break;
856
9a853f71 857 /* Copy Sense Data into sense buffer. */
1da177e4
LT		 858 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
859
860 if (!(scsi_status & SS_SENSE_LEN_VALID))
861 break;
862
9a853f71
AV		 863 if (sense_len >= sizeof(cp->sense_buffer))
864 sense_len = sizeof(cp->sense_buffer);
1da177e4 865
9a853f71
AV		 866 CMD_ACTUAL_SNSLEN(cp) = sense_len;
867 sp->request_sense_length = sense_len;
1da177e4
LT		 868 sp->request_sense_ptr = cp->sense_buffer;
869
870 if (sp->request_sense_length > 32)
9a853f71 871 sense_len = 32;
1da177e4 872
9a853f71 873 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 874
9a853f71
AV		 875 sp->request_sense_ptr += sense_len;
876 sp->request_sense_length -= sense_len;
1da177e4
LT		 877 if (sp->request_sense_length != 0)
878 ha->status_srb = sp;
879
1da177e4 880 DEBUG5(printk("%s(): Check condition Sense data, "
9a853f71
AV		 881 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
882 ha->host_no, cp->device->channel, cp->device->id,
883 cp->device->lun, cp, cp->serial_number));
884 if (sense_len)
1da177e4
LT		 885 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
886 CMD_ACTUAL_SNSLEN(cp)));
887 break;
888
889 case CS_DATA_UNDERRUN:
9a853f71 890 resid = resid_len;
ed17c71b
RA		 891 /* Use F/W calculated residual length. */
892 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
893 resid = fw_resid_len;
894
1da177e4
LT		 895 if (scsi_status & SS_RESIDUAL_UNDER) {
896 cp->resid = resid;
897 CMD_RESID_LEN(cp) = resid;
e038a1be
AV		 898 } else {
899 DEBUG2(printk(KERN_INFO
900 "scsi(%ld:%d:%d) UNDERRUN status detected "
ed17c71b
RA		 901 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
902 "os_underflow=0x%x\n", ha->host_no,
903 cp->device->id, cp->device->lun, comp_status,
904 scsi_status, resid_len, resid, cp->cmnd[0],
905 cp->underflow));
e038a1be 906
1da177e4
LT		 907 }
908
909 /*
fa2a1ce5 910 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 911 * Status.
912 */
913 if (lscsi_status != 0) {
1da177e4
LT		 914 cp->result = DID_OK << 16 | lscsi_status;
915
916 if (lscsi_status != SS_CHECK_CONDITION)
917 break;
918
919 /* Copy Sense Data into sense buffer */
920 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
921
922 if (!(scsi_status & SS_SENSE_LEN_VALID))
923 break;
924
9a853f71
AV		 925 if (sense_len >= sizeof(cp->sense_buffer))
926 sense_len = sizeof(cp->sense_buffer);
1da177e4 927
9a853f71
AV		 928 CMD_ACTUAL_SNSLEN(cp) = sense_len;
929 sp->request_sense_length = sense_len;
1da177e4
LT		 930 sp->request_sense_ptr = cp->sense_buffer;
931
fa2a1ce5 932 if (sp->request_sense_length > 32)
9a853f71 933 sense_len = 32;
1da177e4 934
9a853f71 935 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 936
9a853f71
AV		 937 sp->request_sense_ptr += sense_len;
938 sp->request_sense_length -= sense_len;
1da177e4
LT		 939 if (sp->request_sense_length != 0)
940 ha->status_srb = sp;
941
1da177e4
LT		 942 DEBUG5(printk("%s(): Check condition Sense data, "
943 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
9a853f71
AV		 944 __func__, ha->host_no, cp->device->channel,
945 cp->device->id, cp->device->lun, cp,
1da177e4 946 cp->serial_number));
9a853f71
AV		 947
948 if (sense_len)
1da177e4
LT		 949 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
950 CMD_ACTUAL_SNSLEN(cp)));
951 } else {
952 /*
953 * If RISC reports underrun and target does not report
954 * it then we must have a lost frame, so tell upper
955 * layer to retry it by reporting a bus busy.
956 */
957 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
958 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
959 "frame(s) detected (%x of %x bytes)..."
9a853f71
AV		 960 "retrying command.\n", ha->host_no,
961 cp->device->channel, cp->device->id,
962 cp->device->lun, resid,
1da177e4
LT		 963 cp->request_bufflen));
964
965 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 966 break;
967 }
968
969 /* Handle mid-layer underflow */
970 if ((unsigned)(cp->request_bufflen - resid) <
971 cp->underflow) {
972 qla_printk(KERN_INFO, ha,
973 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
974 "detected (%x of %x bytes)...returning "
9a853f71
AV		 975 "error status.\n", ha->host_no,
976 cp->device->channel, cp->device->id,
977 cp->device->lun, resid,
1da177e4
LT		 978 cp->request_bufflen);
979
980 cp->result = DID_ERROR << 16;
981 break;
982 }
983
984 /* Everybody online, looking good... */
985 cp->result = DID_OK << 16;
986 }
987 break;
988
989 case CS_DATA_OVERRUN:
990 DEBUG2(printk(KERN_INFO
991 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
9a853f71
AV		 992 ha->host_no, cp->device->id, cp->device->lun, comp_status,
993 scsi_status));
1da177e4
LT		 994 DEBUG2(printk(KERN_INFO
995 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
996 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
997 cp->cmnd[4], cp->cmnd[5]));
998 DEBUG2(printk(KERN_INFO
999 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1000 "status!\n",
9a853f71 1001 cp->serial_number, cp->request_bufflen, resid_len));
1da177e4
LT		 1002
1003 cp->result = DID_ERROR << 16;
1004 break;
1005
1006 case CS_PORT_LOGGED_OUT:
1007 case CS_PORT_CONFIG_CHG:
1008 case CS_PORT_BUSY:
1009 case CS_INCOMPLETE:
1010 case CS_PORT_UNAVAILABLE:
1011 /*
1012 * If the port is in Target Down state, return all IOs for this
1013 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1014 * retry_queue.
1015 */
1da177e4
LT		 1016 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1017 "pid=%ld, compl status=0x%x, port state=0x%x\n",
9a853f71
AV		 1018 ha->host_no, cp->device->id, cp->device->lun,
1019 cp->serial_number, comp_status,
1da177e4
LT		 1020 atomic_read(&fcport->state)));
1021
f4f051eb 1022 cp->result = DID_BUS_BUSY << 16;
1da177e4 1023 if (atomic_read(&fcport->state) == FCS_ONLINE) {
d97994dc 1024 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4 1025 }
1da177e4
LT		 1026 break;
1027
1028 case CS_RESET:
1029 DEBUG2(printk(KERN_INFO
1030 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1031 ha->host_no, comp_status, scsi_status));
1032
f4f051eb 1033 cp->result = DID_RESET << 16;
1da177e4
LT		 1034 break;
1035
1036 case CS_ABORTED:
fa2a1ce5 1037 /*
1da177e4
LT		 1038 * hv2.19.12 - DID_ABORT does not retry the request if we
1039 * aborted this request then abort otherwise it must be a
1040 * reset.
1041 */
1042 DEBUG2(printk(KERN_INFO
1043 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1044 ha->host_no, comp_status, scsi_status));
1045
1046 cp->result = DID_RESET << 16;
1047 break;
1048
1049 case CS_TIMEOUT:
9a853f71
AV		 1050 cp->result = DID_BUS_BUSY << 16;
1051
044cc6c8 1052 if (IS_QLA24XX(ha) || IS_QLA54XX(ha)) {
9a853f71
AV		 1053 DEBUG2(printk(KERN_INFO
1054 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1055 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1056 cp->device->id, cp->device->lun, comp_status,
1057 scsi_status));
1058 break;
1059 }
1da177e4
LT		 1060 DEBUG2(printk(KERN_INFO
1061 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
9a853f71
AV		 1062 "sflags=%x.\n", ha->host_no, cp->device->channel,
1063 cp->device->id, cp->device->lun, comp_status, scsi_status,
1064 le16_to_cpu(sts->status_flags)));
1da177e4 1065
9a853f71
AV		 1066 /* Check to see if logout occurred. */
1067 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
d97994dc 1068 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4
LT		 1069 break;
1070
1071 case CS_QUEUE_FULL:
1072 DEBUG2(printk(KERN_INFO
1073 "scsi(%ld): QUEUE FULL status detected 0x%x-0x%x.\n",
1074 ha->host_no, comp_status, scsi_status));
1075
1076 /* SCSI Mid-Layer handles device queue full */
1077
fa2a1ce5 1078 cp->result = DID_OK << 16 | lscsi_status;
1da177e4 1079
1da177e4
LT		 1080 break;
1081
1082 default:
1083 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
9a853f71 1084 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1da177e4
LT		 1085 qla_printk(KERN_INFO, ha,
1086 "Unknown status detected 0x%x-0x%x.\n",
1087 comp_status, scsi_status);
1088
1089 cp->result = DID_ERROR << 16;
1090 break;
1091 }
1092
1093 /* Place command on done queue. */
1094 if (ha->status_srb == NULL)
f4f051eb 1095 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1096}
1097
1098/**
1099 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1100 * @ha: SCSI driver HA context
1101 * @pkt: Entry pointer
1102 *
1103 * Extended sense data.
1104 */
1105static void
1106qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1107{
1108 uint8_t sense_sz = 0;
1109 srb_t *sp = ha->status_srb;
1110 struct scsi_cmnd *cp;
1111
1112 if (sp != NULL && sp->request_sense_length != 0) {
1113 cp = sp->cmd;
1114 if (cp == NULL) {
1115 DEBUG2(printk("%s(): Cmd already returned back to OS "
75bc4190 1116 "sp=%p.\n", __func__, sp));
1da177e4
LT		 1117 qla_printk(KERN_INFO, ha,
1118 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1119 sp);
1da177e4
LT		 1120
1121 ha->status_srb = NULL;
1122 return;
1123 }
1124
1125 if (sp->request_sense_length > sizeof(pkt->data)) {
1126 sense_sz = sizeof(pkt->data);
1127 } else {
1128 sense_sz = sp->request_sense_length;
1129 }
1130
1131 /* Move sense data. */
044cc6c8 1132 if (IS_QLA24XX(ha) || IS_QLA54XX(ha))
9a853f71 1133 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1134 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1135 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1136
1137 sp->request_sense_ptr += sense_sz;
1138 sp->request_sense_length -= sense_sz;
1139
1140 /* Place command on done queue. */
1141 if (sp->request_sense_length == 0) {
1da177e4 1142 ha->status_srb = NULL;
f4f051eb 1143 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1144 }
1145 }
1146}
1147
1148/**
1149 * qla2x00_error_entry() - Process an error entry.
1150 * @ha: SCSI driver HA context
1151 * @pkt: Entry pointer
1152 */
1153static void
9a853f71 1154qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1da177e4
LT		 1155{
1156 srb_t *sp;
1157
1158#if defined(QL_DEBUG_LEVEL_2)
1159 if (pkt->entry_status & RF_INV_E_ORDER)
1160 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1161 else if (pkt->entry_status & RF_INV_E_COUNT)
1162 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1163 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1164 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1165 "%s: Invalid Entry Parameter\n", __func__);
1166 else if (pkt->entry_status & RF_INV_E_TYPE)
1167 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1168 else if (pkt->entry_status & RF_BUSY)
1169 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1170 else
1171 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1172#endif
1173
1174 /* Validate handle. */
1175 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1176 sp = ha->outstanding_cmds[pkt->handle];
1177 else
1178 sp = NULL;
1179
1180 if (sp) {
1181 /* Free outstanding command slot. */
1182 ha->outstanding_cmds[pkt->handle] = NULL;
354d6b21 1183
1da177e4
LT		 1184 /* Bad payload or header */
1185 if (pkt->entry_status &
1186 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1187 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1188 sp->cmd->result = DID_ERROR << 16;
1189 } else if (pkt->entry_status & RF_BUSY) {
1190 sp->cmd->result = DID_BUS_BUSY << 16;
1191 } else {
1192 sp->cmd->result = DID_ERROR << 16;
1193 }
f4f051eb 1194 qla2x00_sp_compl(ha, sp);
1da177e4 1195
9a853f71
AV		 1196 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1197 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4
LT		 1198 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1199 ha->host_no));
1200 qla_printk(KERN_WARNING, ha,
1201 "Error entry - invalid handle\n");
1202
1203 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 1204 qla2xxx_wake_dpc(ha);
1da177e4
LT		 1205 }
1206}
1207
1208/**
1209 * qla2x00_ms_entry() - Process a Management Server entry.
1210 * @ha: SCSI driver HA context
1211 * @index: Response queue out pointer
1212 */
1213static void
9a853f71 1214qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1da177e4
LT		 1215{
1216 srb_t *sp;
1217
1218 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1219 __func__, ha->host_no, pkt, pkt->handle1));
1220
1221 /* Validate handle. */
1222 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1223 sp = ha->outstanding_cmds[pkt->handle1];
1224 else
1225 sp = NULL;
1226
1227 if (sp == NULL) {
1228 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1229 ha->host_no));
1230 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1231
1232 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1233 return;
1234 }
1235
1236 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1237 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1238
1239 /* Free outstanding command slot. */
1240 ha->outstanding_cmds[pkt->handle1] = NULL;
1241
f4f051eb 1242 qla2x00_sp_compl(ha, sp);
1da177e4 1243}
9a853f71
AV		 1244
1245
1246/**
1247 * qla24xx_mbx_completion() - Process mailbox command completions.
1248 * @ha: SCSI driver HA context
1249 * @mb0: Mailbox0 register
1250 */
1251static void
1252qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1253{
1254 uint16_t cnt;
1255 uint16_t __iomem *wptr;
1256 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1257
1258 /* Load return mailbox registers. */
1259 ha->flags.mbox_int = 1;
1260 ha->mailbox_out[0] = mb0;
1261 wptr = (uint16_t __iomem *)&reg->mailbox1;
1262
1263 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1264 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1265 wptr++;
1266 }
1267
1268 if (ha->mcp) {
1269 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1270 __func__, ha->host_no, ha->mcp->mb[0]));
1271 } else {
1272 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1273 __func__, ha->host_no));
1274 }
1275}
1276
1277/**
1278 * qla24xx_process_response_queue() - Process response queue entries.
1279 * @ha: SCSI driver HA context
1280 */
1281void
1282qla24xx_process_response_queue(struct scsi_qla_host *ha)
1283{
1284 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1285 struct sts_entry_24xx *pkt;
1286
1287 if (!ha->flags.online)
1288 return;
1289
1290 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1291 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1292
1293 ha->rsp_ring_index++;
1294 if (ha->rsp_ring_index == ha->response_q_length) {
1295 ha->rsp_ring_index = 0;
1296 ha->response_ring_ptr = ha->response_ring;
1297 } else {
1298 ha->response_ring_ptr++;
1299 }
1300
1301 if (pkt->entry_status != 0) {
1302 DEBUG3(printk(KERN_INFO
1303 "scsi(%ld): Process error entry.\n", ha->host_no));
1304
9a853f71
AV		 1305 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1306 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1307 wmb();
1308 continue;
1309 }
1310
1311 switch (pkt->entry_type) {
1312 case STATUS_TYPE:
1313 qla2x00_status_entry(ha, pkt);
1314 break;
1315 case STATUS_CONT_TYPE:
1316 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1317 break;
1318 case MS_IOCB_TYPE:
1319 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1320 break;
1321 default:
1322 /* Type Not Supported. */
1323 DEBUG4(printk(KERN_WARNING
1324 "scsi(%ld): Received unknown response pkt type %x "
1325 "entry status=%x.\n",
1326 ha->host_no, pkt->entry_type, pkt->entry_status));
1327 break;
1328 }
1329 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1330 wmb();
1331 }
1332
1333 /* Adjust ring index */
1334 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1335}
1336
1337/**
1338 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1339 * @irq:
1340 * @dev_id: SCSI driver HA context
1341 * @regs:
1342 *
1343 * Called by system whenever the host adapter generates an interrupt.
1344 *
1345 * Returns handled flag.
1346 */
1347irqreturn_t
1348qla24xx_intr_handler(int irq, void *dev_id, struct pt_regs *regs)
1349{
1350 scsi_qla_host_t *ha;
1351 struct device_reg_24xx __iomem *reg;
1352 int status;
1353 unsigned long flags;
1354 unsigned long iter;
1355 uint32_t stat;
1356 uint32_t hccr;
1357 uint16_t mb[4];
1358
1359 ha = (scsi_qla_host_t *) dev_id;
1360 if (!ha) {
1361 printk(KERN_INFO
1362 "%s(): NULL host pointer\n", __func__);
1363 return IRQ_NONE;
1364 }
1365
1366 reg = &ha->iobase->isp24;
1367 status = 0;
1368
1369 spin_lock_irqsave(&ha->hardware_lock, flags);
1370 for (iter = 50; iter--; ) {
1371 stat = RD_REG_DWORD(&reg->host_status);
1372 if (stat & HSRX_RISC_PAUSED) {
1373 hccr = RD_REG_DWORD(&reg->hccr);
1374
1375 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1376 "Dumping firmware!\n", hccr);
1377 qla24xx_fw_dump(ha, 1);
1378
1379 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1380 break;
1381 } else if ((stat & HSRX_RISC_INT) == 0)
1382 break;
1383
1384 switch (stat & 0xff) {
1385 case 0x1:
1386 case 0x2:
1387 case 0x10:
1388 case 0x11:
1389 qla24xx_mbx_completion(ha, MSW(stat));
1390 status |= MBX_INTERRUPT;
1391
1392 break;
1393 case 0x12:
1394 mb[0] = MSW(stat);
1395 mb[1] = RD_REG_WORD(&reg->mailbox1);
1396 mb[2] = RD_REG_WORD(&reg->mailbox2);
1397 mb[3] = RD_REG_WORD(&reg->mailbox3);
1398 qla2x00_async_event(ha, mb);
1399 break;
1400 case 0x13:
1401 qla24xx_process_response_queue(ha);
1402 break;
1403 default:
1404 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1405 "(%d).\n",
1406 ha->host_no, stat & 0xff));
1407 break;
1408 }
1409 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1410 RD_REG_DWORD_RELAXED(&reg->hccr);
1411 }
1412 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1413
1414 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1415 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1416 spin_lock_irqsave(&ha->mbx_reg_lock, flags);
1417
1418 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1419 up(&ha->mbx_intr_sem);
1420
1421 spin_unlock_irqrestore(&ha->mbx_reg_lock, flags);
1422 }
1423
1424 return IRQ_HANDLED;
1425}
1426
1427/**
1428 * qla24xx_ms_entry() - Process a Management Server entry.
1429 * @ha: SCSI driver HA context
1430 * @index: Response queue out pointer
1431 */
1432static void
1433qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1434{
1435 srb_t *sp;
1436
1437 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1438 __func__, ha->host_no, pkt, pkt->handle));
1439
744f11fd
AV		 1440 DEBUG9(printk("%s: ct pkt dump:\n", __func__));
1441 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx)));
9a853f71
AV		 1442
1443 /* Validate handle. */
1444 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1445 sp = ha->outstanding_cmds[pkt->handle];
1446 else
1447 sp = NULL;
1448
1449 if (sp == NULL) {
1450 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1451 ha->host_no));
1452 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1453 ha->host_no));
1454 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1455 pkt->handle);
1456
1457 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1458 return;
1459 }
1460
1461 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1462 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1463
1464 /* Free outstanding command slot. */
1465 ha->outstanding_cmds[pkt->handle] = NULL;
1466
1467 qla2x00_sp_compl(ha, sp);
1468}
1469
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