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[SCSI] qla2xxx: Allow region-based flash-part accesses.
[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_isr.c
CommitLineData
1da177e4 1/*
fa90c54f
AV		 2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2005 QLogic Corporation
1da177e4 4 *
fa90c54f 5 * See LICENSE.qla2xxx for copyright and licensing details.
1da177e4
LT		 6 */
7#include "qla_def.h"
8
df7baa50
AV		 9#include <scsi/scsi_tcq.h>
10
1da177e4 11static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
1da177e4 12static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
9a853f71 13static void qla2x00_status_entry(scsi_qla_host_t *, void *);
1da177e4
LT		 14static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
15static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
16static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
17
9a853f71
AV		 18static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
19
1da177e4
LT		 20/**
21 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
22 * @irq:
23 * @dev_id: SCSI driver HA context
1da177e4
LT		 24 *
25 * Called by system whenever the host adapter generates an interrupt.
26 *
27 * Returns handled flag.
28 */
29irqreturn_t
7d12e780 30qla2100_intr_handler(int irq, void *dev_id)
1da177e4
LT		 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) {
1da177e4
LT		 88 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
89 up(&ha->mbx_intr_sem);
1da177e4
LT		 90 }
91
1da177e4
LT		 92 return (IRQ_HANDLED);
93}
94
95/**
96 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
97 * @irq:
98 * @dev_id: SCSI driver HA context
1da177e4
LT		 99 *
100 * Called by system whenever the host adapter generates an interrupt.
101 *
102 * Returns handled flag.
103 */
104irqreturn_t
7d12e780 105qla2300_intr_handler(int irq, void *dev_id)
1da177e4
LT		 106{
107 scsi_qla_host_t *ha;
3d71644c 108 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 109 int status;
110 unsigned long flags;
111 unsigned long iter;
112 uint32_t stat;
1da177e4 113 uint16_t hccr;
9a853f71 114 uint16_t mb[4];
1da177e4
LT		 115
116 ha = (scsi_qla_host_t *) dev_id;
117 if (!ha) {
118 printk(KERN_INFO
119 "%s(): NULL host pointer\n", __func__);
120 return (IRQ_NONE);
121 }
122
3d71644c 123 reg = &ha->iobase->isp;
1da177e4
LT		 124 status = 0;
125
126 spin_lock_irqsave(&ha->hardware_lock, flags);
127 for (iter = 50; iter--; ) {
128 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
129 if (stat & HSR_RISC_PAUSED) {
130 hccr = RD_REG_WORD(&reg->hccr);
131 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
07f31805
AV		 132 qla_printk(KERN_INFO, ha, "Parity error -- "
133 "HCCR=%x, Dumping firmware!\n", hccr);
1da177e4 134 else
07f31805
AV		 135 qla_printk(KERN_INFO, ha, "RISC paused -- "
136 "HCCR=%x, Dumping firmware!\n", hccr);
1da177e4
LT		 137
138 /*
139 * Issue a "HARD" reset in order for the RISC
140 * interrupt bit to be cleared. Schedule a big
141 * hammmer to get out of the RISC PAUSED state.
142 */
143 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
144 RD_REG_WORD(&reg->hccr);
07f31805 145
fd34f556 146 ha->isp_ops->fw_dump(ha, 1);
1da177e4
LT		 147 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
148 break;
149 } else if ((stat & HSR_RISC_INT) == 0)
150 break;
151
1da177e4 152 switch (stat & 0xff) {
1da177e4
LT		 153 case 0x1:
154 case 0x2:
155 case 0x10:
156 case 0x11:
9a853f71 157 qla2x00_mbx_completion(ha, MSW(stat));
1da177e4
LT		 158 status |= MBX_INTERRUPT;
159
160 /* Release mailbox registers. */
161 WRT_REG_WORD(&reg->semaphore, 0);
162 break;
163 case 0x12:
9a853f71
AV		 164 mb[0] = MSW(stat);
165 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
166 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
167 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
168 qla2x00_async_event(ha, mb);
169 break;
170 case 0x13:
171 qla2x00_process_response_queue(ha);
1da177e4
LT		 172 break;
173 case 0x15:
9a853f71
AV		 174 mb[0] = MBA_CMPLT_1_16BIT;
175 mb[1] = MSW(stat);
176 qla2x00_async_event(ha, mb);
1da177e4
LT		 177 break;
178 case 0x16:
9a853f71
AV		 179 mb[0] = MBA_SCSI_COMPLETION;
180 mb[1] = MSW(stat);
181 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
182 qla2x00_async_event(ha, mb);
1da177e4
LT		 183 break;
184 default:
185 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
9a853f71 186 "(%d).\n",
1da177e4
LT		 187 ha->host_no, stat & 0xff));
188 break;
189 }
190 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
191 RD_REG_WORD_RELAXED(&reg->hccr);
192 }
193 spin_unlock_irqrestore(&ha->hardware_lock, flags);
194
1da177e4
LT		 195 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
196 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1da177e4
LT		 197 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
198 up(&ha->mbx_intr_sem);
1da177e4
LT		 199 }
200
1da177e4
LT		 201 return (IRQ_HANDLED);
202}
203
204/**
205 * qla2x00_mbx_completion() - Process mailbox command completions.
206 * @ha: SCSI driver HA context
207 * @mb0: Mailbox0 register
208 */
209static void
210qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
211{
212 uint16_t cnt;
213 uint16_t __iomem *wptr;
3d71644c 214 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 215
216 /* Load return mailbox registers. */
217 ha->flags.mbox_int = 1;
218 ha->mailbox_out[0] = mb0;
219 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
220
221 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
fa2a1ce5 222 if (IS_QLA2200(ha) && cnt == 8)
1da177e4
LT		 223 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
224 if (cnt == 4 || cnt == 5)
225 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
226 else
227 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
fa2a1ce5 228
1da177e4
LT		 229 wptr++;
230 }
231
232 if (ha->mcp) {
233 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
234 __func__, ha->host_no, ha->mcp->mb[0]));
235 } else {
236 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
237 __func__, ha->host_no));
238 }
239}
240
241/**
242 * qla2x00_async_event() - Process aynchronous events.
243 * @ha: SCSI driver HA context
9a853f71 244 * @mb: Mailbox registers (0 - 3)
1da177e4 245 */
2c3dfe3f 246void
9a853f71 247qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
1da177e4 248{
9a853f71 249#define LS_UNKNOWN 2
c3a2f0df 250 static char *link_speeds[5] = { "1", "2", "?", "4", "8" };
1da177e4 251 char *link_speed;
1da177e4
LT		 252 uint16_t handle_cnt;
253 uint16_t cnt;
254 uint32_t handles[5];
3d71644c 255 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 256 uint32_t rscn_entry, host_pid;
257 uint8_t rscn_queue_index;
258
259 /* Setup to process RIO completion. */
260 handle_cnt = 0;
1da177e4
LT		 261 switch (mb[0]) {
262 case MBA_SCSI_COMPLETION:
9a853f71 263 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 264 handle_cnt = 1;
265 break;
266 case MBA_CMPLT_1_16BIT:
9a853f71 267 handles[0] = mb[1];
1da177e4
LT		 268 handle_cnt = 1;
269 mb[0] = MBA_SCSI_COMPLETION;
270 break;
271 case MBA_CMPLT_2_16BIT:
9a853f71
AV		 272 handles[0] = mb[1];
273 handles[1] = mb[2];
1da177e4
LT		 274 handle_cnt = 2;
275 mb[0] = MBA_SCSI_COMPLETION;
276 break;
277 case MBA_CMPLT_3_16BIT:
9a853f71
AV		 278 handles[0] = mb[1];
279 handles[1] = mb[2];
280 handles[2] = mb[3];
1da177e4
LT		 281 handle_cnt = 3;
282 mb[0] = MBA_SCSI_COMPLETION;
283 break;
284 case MBA_CMPLT_4_16BIT:
9a853f71
AV		 285 handles[0] = mb[1];
286 handles[1] = mb[2];
287 handles[2] = mb[3];
1da177e4
LT		 288 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
289 handle_cnt = 4;
290 mb[0] = MBA_SCSI_COMPLETION;
291 break;
292 case MBA_CMPLT_5_16BIT:
9a853f71
AV		 293 handles[0] = mb[1];
294 handles[1] = mb[2];
295 handles[2] = mb[3];
1da177e4
LT		 296 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
297 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
298 handle_cnt = 5;
299 mb[0] = MBA_SCSI_COMPLETION;
300 break;
301 case MBA_CMPLT_2_32BIT:
9a853f71 302 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 303 handles[1] = le32_to_cpu(
304 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
305 RD_MAILBOX_REG(ha, reg, 6));
306 handle_cnt = 2;
307 mb[0] = MBA_SCSI_COMPLETION;
308 break;
309 default:
310 break;
311 }
312
313 switch (mb[0]) {
314 case MBA_SCSI_COMPLETION: /* Fast Post */
315 if (!ha->flags.online)
316 break;
317
318 for (cnt = 0; cnt < handle_cnt; cnt++)
319 qla2x00_process_completed_request(ha, handles[cnt]);
320 break;
321
322 case MBA_RESET: /* Reset */
323 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
324
325 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
326 break;
327
328 case MBA_SYSTEM_ERR: /* System Error */
329 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
330 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
331 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
332
333 qla_printk(KERN_INFO, ha,
334 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
335 mb[1], mb[2], mb[3]);
336
fd34f556 337 ha->isp_ops->fw_dump(ha, 1);
1da177e4 338
e428924c 339 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 340 if (mb[1] == 0 && mb[2] == 0) {
341 qla_printk(KERN_ERR, ha,
342 "Unrecoverable Hardware Error: adapter "
343 "marked OFFLINE!\n");
344 ha->flags.online = 0;
345 } else
346 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
347 } else if (mb[1] == 0) {
1da177e4
LT		 348 qla_printk(KERN_INFO, ha,
349 "Unrecoverable Hardware Error: adapter marked "
350 "OFFLINE!\n");
351 ha->flags.online = 0;
352 } else
353 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
354 break;
355
356 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
357 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
358 ha->host_no));
359 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
360
361 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
362 break;
363
364 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
365 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
366 ha->host_no));
367 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
368
369 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
370 break;
371
372 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
373 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
374 ha->host_no));
375 break;
376
377 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
1da177e4
LT		 378 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
379 mb[1]));
380 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
381
382 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
383 atomic_set(&ha->loop_state, LOOP_DOWN);
384 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 385 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 386 }
387
2c3dfe3f
SJ		 388 if (ha->parent) {
389 atomic_set(&ha->vp_state, VP_FAILED);
390 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
391 }
392
1da177e4
LT		 393 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
394
395 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 396 break;
397
398 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 399 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
400 link_speed = link_speeds[0];
d8b45213 401 ha->link_data_rate = PORT_SPEED_1GB;
1da177e4 402 } else {
9a853f71 403 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 404 if (mb[1] < 5)
405 link_speed = link_speeds[mb[1]];
406 ha->link_data_rate = mb[1];
407 }
408
409 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
410 ha->host_no, link_speed));
411 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
412 link_speed);
413
414 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 415 break;
416
417 case MBA_LOOP_DOWN: /* Loop Down Event */
9a853f71
AV		 418 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
419 ha->host_no, mb[1]));
420 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
1da177e4
LT		 421
422 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
423 atomic_set(&ha->loop_state, LOOP_DOWN);
424 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
425 ha->device_flags |= DFLG_NO_CABLE;
d97994dc 426 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 427 }
428
2c3dfe3f
SJ		 429 if (ha->parent) {
430 atomic_set(&ha->vp_state, VP_FAILED);
431 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
432 }
433
1da177e4 434 ha->flags.management_server_logged_in = 0;
d8b45213 435 ha->link_data_rate = PORT_SPEED_UNKNOWN;
cca5335c
AV		 436 if (ql2xfdmienable)
437 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
1da177e4
LT		 438 break;
439
440 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4
LT		 441 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
442 ha->host_no, mb[1]));
443 qla_printk(KERN_INFO, ha,
444 "LIP reset occured (%x).\n", mb[1]);
445
446 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
447 atomic_set(&ha->loop_state, LOOP_DOWN);
448 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 449 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 450 }
451
2c3dfe3f
SJ		 452 if (ha->parent) {
453 atomic_set(&ha->vp_state, VP_FAILED);
454 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
455 }
456
1da177e4
LT		 457 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
458
459 ha->operating_mode = LOOP;
460 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 461 break;
462
463 case MBA_POINT_TO_POINT: /* Point-to-Point */
464 if (IS_QLA2100(ha))
465 break;
466
467 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
468 ha->host_no));
469
470 /*
471 * Until there's a transition from loop down to loop up, treat
472 * this as loop down only.
473 */
474 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
475 atomic_set(&ha->loop_state, LOOP_DOWN);
476 if (!atomic_read(&ha->loop_down_timer))
477 atomic_set(&ha->loop_down_timer,
478 LOOP_DOWN_TIME);
d97994dc 479 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 480 }
481
2c3dfe3f
SJ		 482 if (ha->parent) {
483 atomic_set(&ha->vp_state, VP_FAILED);
484 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
485 }
486
1da177e4
LT		 487 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
488 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
489 }
490 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
4346b149
AV		 491
492 ha->flags.gpsc_supported = 1;
02d638b4 493 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 494 break;
495
496 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
497 if (IS_QLA2100(ha))
498 break;
499
1da177e4
LT		 500 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
501 "received.\n",
502 ha->host_no));
503 qla_printk(KERN_INFO, ha,
504 "Configuration change detected: value=%x.\n", mb[1]);
505
506 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
fa2a1ce5 507 atomic_set(&ha->loop_state, LOOP_DOWN);
1da177e4
LT		 508 if (!atomic_read(&ha->loop_down_timer))
509 atomic_set(&ha->loop_down_timer,
510 LOOP_DOWN_TIME);
d97994dc 511 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 512 }
513
2c3dfe3f
SJ		 514 if (ha->parent) {
515 atomic_set(&ha->vp_state, VP_FAILED);
516 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
517 }
518
1da177e4
LT		 519 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
520 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
521 break;
522
523 case MBA_PORT_UPDATE: /* Port database update */
1da177e4
LT		 524 /*
525 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
526 * event etc. earlier indicating loop is down) then process
527 * it. Otherwise ignore it and Wait for RSCN to come in.
528 */
529 atomic_set(&ha->loop_down_timer, 0);
530 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
531 atomic_read(&ha->loop_state) != LOOP_DEAD) {
532 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
9a853f71
AV		 533 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
534 mb[2], mb[3]));
1da177e4
LT		 535 break;
536 }
537
538 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
539 ha->host_no));
540 DEBUG(printk(KERN_INFO
9a853f71
AV		 541 "scsi(%ld): Port database changed %04x %04x %04x.\n",
542 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 543
544 /*
545 * Mark all devices as missing so we will login again.
546 */
547 atomic_set(&ha->loop_state, LOOP_UP);
548
d97994dc 549 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 550
551 ha->flags.rscn_queue_overflow = 1;
552
553 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
554 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1da177e4
LT		 555 break;
556
557 case MBA_RSCN_UPDATE: /* State Change Registration */
2c3dfe3f
SJ		 558 /* Check if the Vport has issued a SCR */
559 if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
560 break;
561
1da177e4
LT		 562 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
563 ha->host_no));
564 DEBUG(printk(KERN_INFO
565 "scsi(%ld): RSCN database changed -- %04x %04x.\n",
566 ha->host_no, mb[1], mb[2]));
567
568 rscn_entry = (mb[1] << 16) | mb[2];
569 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
570 ha->d_id.b.al_pa;
571 if (rscn_entry == host_pid) {
572 DEBUG(printk(KERN_INFO
573 "scsi(%ld): Ignoring RSCN update to local host "
574 "port ID (%06x)\n",
575 ha->host_no, host_pid));
576 break;
577 }
578
579 rscn_queue_index = ha->rscn_in_ptr + 1;
580 if (rscn_queue_index == MAX_RSCN_COUNT)
581 rscn_queue_index = 0;
582 if (rscn_queue_index != ha->rscn_out_ptr) {
583 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
584 ha->rscn_in_ptr = rscn_queue_index;
585 } else {
586 ha->flags.rscn_queue_overflow = 1;
587 }
588
589 atomic_set(&ha->loop_state, LOOP_UPDATE);
590 atomic_set(&ha->loop_down_timer, 0);
591 ha->flags.management_server_logged_in = 0;
592
593 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
594 set_bit(RSCN_UPDATE, &ha->dpc_flags);
1da177e4
LT		 595 break;
596
597 /* case MBA_RIO_RESPONSE: */
598 case MBA_ZIO_RESPONSE:
599 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
600 ha->host_no));
601 DEBUG(printk(KERN_INFO
602 "scsi(%ld): [R|Z]IO update completion.\n",
603 ha->host_no));
604
e428924c 605 if (IS_FWI2_CAPABLE(ha))
4fdfefe5
AV		 606 qla24xx_process_response_queue(ha);
607 else
608 qla2x00_process_response_queue(ha);
1da177e4 609 break;
9a853f71
AV		 610
611 case MBA_DISCARD_RND_FRAME:
612 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
613 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
614 break;
45ebeb56
AV		 615
616 case MBA_TRACE_NOTIFICATION:
617 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
618 ha->host_no, mb[1], mb[2]));
619 break;
1da177e4 620 }
2c3dfe3f
SJ		 621
622 if (!ha->parent && ha->num_vhosts)
623 qla2x00_alert_all_vps(ha, mb);
1da177e4
LT		 624}
625
df7baa50
AV		 626static void
627qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
628{
629 fc_port_t *fcport = data;
630
631 if (fcport->ha->max_q_depth <= sdev->queue_depth)
632 return;
633
634 if (sdev->ordered_tags)
635 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
636 sdev->queue_depth + 1);
637 else
638 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
639 sdev->queue_depth + 1);
640
641 fcport->last_ramp_up = jiffies;
642
643 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
644 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
645 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
646 sdev->queue_depth));
647}
648
649static void
650qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
651{
652 fc_port_t *fcport = data;
653
654 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
655 return;
656
657 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
658 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
659 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
660 sdev->queue_depth));
661}
662
663static inline void
664qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp)
665{
666 fc_port_t *fcport;
667 struct scsi_device *sdev;
668
669 sdev = sp->cmd->device;
670 if (sdev->queue_depth >= ha->max_q_depth)
671 return;
672
673 fcport = sp->fcport;
674 if (time_before(jiffies,
675 fcport->last_ramp_up + ql2xqfullrampup * HZ))
676 return;
677 if (time_before(jiffies,
678 fcport->last_queue_full + ql2xqfullrampup * HZ))
679 return;
680
df7baa50
AV		 681 starget_for_each_device(sdev->sdev_target, fcport,
682 qla2x00_adjust_sdev_qdepth_up);
df7baa50
AV		 683}
684
1da177e4
LT		 685/**
686 * qla2x00_process_completed_request() - Process a Fast Post response.
687 * @ha: SCSI driver HA context
688 * @index: SRB index
689 */
690static void
691qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
692{
693 srb_t *sp;
694
695 /* Validate handle. */
696 if (index >= MAX_OUTSTANDING_COMMANDS) {
697 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
698 ha->host_no, index));
699 qla_printk(KERN_WARNING, ha,
700 "Invalid SCSI completion handle %d.\n", index);
701
702 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
703 return;
704 }
705
706 sp = ha->outstanding_cmds[index];
707 if (sp) {
708 /* Free outstanding command slot. */
709 ha->outstanding_cmds[index] = NULL;
710
1da177e4
LT		 711 CMD_COMPL_STATUS(sp->cmd) = 0L;
712 CMD_SCSI_STATUS(sp->cmd) = 0L;
713
714 /* Save ISP completion status */
715 sp->cmd->result = DID_OK << 16;
df7baa50
AV		 716
717 qla2x00_ramp_up_queue_depth(ha, sp);
f4f051eb 718 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 719 } else {
720 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
721 ha->host_no));
722 qla_printk(KERN_WARNING, ha,
723 "Invalid ISP SCSI completion handle\n");
724
725 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
726 }
727}
728
729/**
730 * qla2x00_process_response_queue() - Process response queue entries.
731 * @ha: SCSI driver HA context
732 */
733void
734qla2x00_process_response_queue(struct scsi_qla_host *ha)
735{
3d71644c 736 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 737 sts_entry_t *pkt;
738 uint16_t handle_cnt;
739 uint16_t cnt;
740
741 if (!ha->flags.online)
742 return;
743
744 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
745 pkt = (sts_entry_t *)ha->response_ring_ptr;
746
747 ha->rsp_ring_index++;
748 if (ha->rsp_ring_index == ha->response_q_length) {
749 ha->rsp_ring_index = 0;
750 ha->response_ring_ptr = ha->response_ring;
751 } else {
752 ha->response_ring_ptr++;
753 }
754
755 if (pkt->entry_status != 0) {
756 DEBUG3(printk(KERN_INFO
757 "scsi(%ld): Process error entry.\n", ha->host_no));
758
759 qla2x00_error_entry(ha, pkt);
760 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
761 wmb();
762 continue;
763 }
764
765 switch (pkt->entry_type) {
766 case STATUS_TYPE:
767 qla2x00_status_entry(ha, pkt);
768 break;
769 case STATUS_TYPE_21:
770 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
771 for (cnt = 0; cnt < handle_cnt; cnt++) {
772 qla2x00_process_completed_request(ha,
773 ((sts21_entry_t *)pkt)->handle[cnt]);
774 }
775 break;
776 case STATUS_TYPE_22:
777 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
778 for (cnt = 0; cnt < handle_cnt; cnt++) {
779 qla2x00_process_completed_request(ha,
780 ((sts22_entry_t *)pkt)->handle[cnt]);
781 }
782 break;
783 case STATUS_CONT_TYPE:
784 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
785 break;
786 case MS_IOCB_TYPE:
787 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
788 break;
1da177e4
LT		 789 default:
790 /* Type Not Supported. */
791 DEBUG4(printk(KERN_WARNING
792 "scsi(%ld): Received unknown response pkt type %x "
793 "entry status=%x.\n",
794 ha->host_no, pkt->entry_type, pkt->entry_status));
795 break;
796 }
797 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
798 wmb();
799 }
800
801 /* Adjust ring index */
802 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
803}
804
805/**
806 * qla2x00_status_entry() - Process a Status IOCB entry.
807 * @ha: SCSI driver HA context
808 * @pkt: Entry pointer
809 */
810static void
9a853f71 811qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
1da177e4 812{
1da177e4 813 srb_t *sp;
1da177e4
LT		 814 fc_port_t *fcport;
815 struct scsi_cmnd *cp;
9a853f71
AV		 816 sts_entry_t *sts;
817 struct sts_entry_24xx *sts24;
1da177e4
LT		 818 uint16_t comp_status;
819 uint16_t scsi_status;
820 uint8_t lscsi_status;
821 int32_t resid;
ed17c71b 822 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
9a853f71
AV		 823 uint8_t *rsp_info, *sense_data;
824
825 sts = (sts_entry_t *) pkt;
826 sts24 = (struct sts_entry_24xx *) pkt;
e428924c 827 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 828 comp_status = le16_to_cpu(sts24->comp_status);
829 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
830 } else {
831 comp_status = le16_to_cpu(sts->comp_status);
832 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
833 }
1da177e4
LT		 834
835 /* Fast path completion. */
9a853f71
AV		 836 if (comp_status == CS_COMPLETE && scsi_status == 0) {
837 qla2x00_process_completed_request(ha, sts->handle);
1da177e4
LT		 838
839 return;
840 }
841
842 /* Validate handle. */
9a853f71
AV		 843 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
844 sp = ha->outstanding_cmds[sts->handle];
845 ha->outstanding_cmds[sts->handle] = NULL;
1da177e4
LT		 846 } else
847 sp = NULL;
848
849 if (sp == NULL) {
850 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
851 ha->host_no));
852 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
853
854 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 855 qla2xxx_wake_dpc(ha);
1da177e4
LT		 856 return;
857 }
858 cp = sp->cmd;
859 if (cp == NULL) {
860 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
75bc4190 861 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
1da177e4
LT		 862 qla_printk(KERN_WARNING, ha,
863 "Command is NULL: already returned to OS (sp=%p)\n", sp);
864
865 return;
866 }
867
9a853f71
AV		 868 lscsi_status = scsi_status & STATUS_MASK;
869 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1da177e4
LT		 870 CMD_COMPL_STATUS(cp) = comp_status;
871 CMD_SCSI_STATUS(cp) = scsi_status;
872
bdf79621 873 fcport = sp->fcport;
1da177e4 874
ed17c71b 875 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
e428924c 876 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 877 sense_len = le32_to_cpu(sts24->sense_len);
878 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
879 resid_len = le32_to_cpu(sts24->rsp_residual_count);
ed17c71b 880 fw_resid_len = le32_to_cpu(sts24->residual_len);
9a853f71
AV		 881 rsp_info = sts24->data;
882 sense_data = sts24->data;
883 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
884 } else {
885 sense_len = le16_to_cpu(sts->req_sense_length);
886 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
887 resid_len = le32_to_cpu(sts->residual_length);
888 rsp_info = sts->rsp_info;
889 sense_data = sts->req_sense_data;
890 }
891
1da177e4
LT		 892 /* Check for any FCP transport errors. */
893 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71 894 /* Sense data lies beyond any FCP RESPONSE data. */
e428924c 895 if (IS_FWI2_CAPABLE(ha))
9a853f71
AV		 896 sense_data += rsp_info_len;
897 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 898 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
899 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
9a853f71
AV		 900 "retrying command\n", ha->host_no,
901 cp->device->channel, cp->device->id,
902 cp->device->lun, rsp_info_len, rsp_info[0],
903 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
904 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 905
906 cp->result = DID_BUS_BUSY << 16;
f4f051eb 907 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 908 return;
909 }
910 }
911
912 /*
913 * Based on Host and scsi status generate status code for Linux
914 */
915 switch (comp_status) {
916 case CS_COMPLETE:
df7baa50 917 case CS_QUEUE_FULL:
1da177e4
LT		 918 if (scsi_status == 0) {
919 cp->result = DID_OK << 16;
920 break;
921 }
922 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 923 resid = resid_len;
385d70b4 924 scsi_set_resid(cp, resid);
1da177e4 925 CMD_RESID_LEN(cp) = resid;
0da69df1
AV		 926
927 if (!lscsi_status &&
385d70b4 928 ((unsigned)(scsi_bufflen(cp) - resid) <
0da69df1
AV		 929 cp->underflow)) {
930 qla_printk(KERN_INFO, ha,
385d70b4
FT		 931 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
932 "detected (%x of %x bytes)...returning "
933 "error status.\n", ha->host_no,
934 cp->device->channel, cp->device->id,
935 cp->device->lun, resid,
936 scsi_bufflen(cp));
0da69df1
AV		 937
938 cp->result = DID_ERROR << 16;
939 break;
940 }
1da177e4 941 }
1da177e4
LT		 942 cp->result = DID_OK << 16 | lscsi_status;
943
df7baa50
AV		 944 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
945 DEBUG2(printk(KERN_INFO
946 "scsi(%ld): QUEUE FULL status detected "
947 "0x%x-0x%x.\n", ha->host_no, comp_status,
948 scsi_status));
949
950 /* Adjust queue depth for all luns on the port. */
951 fcport->last_queue_full = jiffies;
df7baa50
AV		 952 starget_for_each_device(cp->device->sdev_target,
953 fcport, qla2x00_adjust_sdev_qdepth_down);
df7baa50
AV		 954 break;
955 }
1da177e4
LT		 956 if (lscsi_status != SS_CHECK_CONDITION)
957 break;
958
9a853f71 959 /* Copy Sense Data into sense buffer. */
1da177e4
LT		 960 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
961
962 if (!(scsi_status & SS_SENSE_LEN_VALID))
963 break;
964
9a853f71
AV		 965 if (sense_len >= sizeof(cp->sense_buffer))
966 sense_len = sizeof(cp->sense_buffer);
1da177e4 967
9a853f71
AV		 968 CMD_ACTUAL_SNSLEN(cp) = sense_len;
969 sp->request_sense_length = sense_len;
1da177e4
LT		 970 sp->request_sense_ptr = cp->sense_buffer;
971
972 if (sp->request_sense_length > 32)
9a853f71 973 sense_len = 32;
1da177e4 974
9a853f71 975 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 976
9a853f71
AV		 977 sp->request_sense_ptr += sense_len;
978 sp->request_sense_length -= sense_len;
1da177e4
LT		 979 if (sp->request_sense_length != 0)
980 ha->status_srb = sp;
981
1da177e4 982 DEBUG5(printk("%s(): Check condition Sense data, "
9a853f71
AV		 983 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n", __func__,
984 ha->host_no, cp->device->channel, cp->device->id,
985 cp->device->lun, cp, cp->serial_number));
986 if (sense_len)
1da177e4
LT		 987 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
988 CMD_ACTUAL_SNSLEN(cp)));
989 break;
990
991 case CS_DATA_UNDERRUN:
9a853f71 992 resid = resid_len;
ed17c71b 993 /* Use F/W calculated residual length. */
e428924c 994 if (IS_FWI2_CAPABLE(ha))
ed17c71b
RA		 995 resid = fw_resid_len;
996
1da177e4 997 if (scsi_status & SS_RESIDUAL_UNDER) {
385d70b4 998 scsi_set_resid(cp, resid);
1da177e4 999 CMD_RESID_LEN(cp) = resid;
e038a1be 1000 } else {
1001 DEBUG2(printk(KERN_INFO
1002 "scsi(%ld:%d:%d) UNDERRUN status detected "
ed17c71b
RA		 1003 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1004 "os_underflow=0x%x\n", ha->host_no,
1005 cp->device->id, cp->device->lun, comp_status,
1006 scsi_status, resid_len, resid, cp->cmnd[0],
1007 cp->underflow));
e038a1be 1008
1da177e4
LT		 1009 }
1010
1011 /*
fa2a1ce5 1012 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 1013 * Status.
1014 */
1015 if (lscsi_status != 0) {
1da177e4
LT		 1016 cp->result = DID_OK << 16 | lscsi_status;
1017
ffec28a3
AV		 1018 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1019 DEBUG2(printk(KERN_INFO
1020 "scsi(%ld): QUEUE FULL status detected "
1021 "0x%x-0x%x.\n", ha->host_no, comp_status,
1022 scsi_status));
1023
1024 /*
1025 * Adjust queue depth for all luns on the
1026 * port.
1027 */
1028 fcport->last_queue_full = jiffies;
1029 starget_for_each_device(
1030 cp->device->sdev_target, fcport,
1031 qla2x00_adjust_sdev_qdepth_down);
1032 break;
1033 }
1da177e4
LT		 1034 if (lscsi_status != SS_CHECK_CONDITION)
1035 break;
1036
1037 /* Copy Sense Data into sense buffer */
1038 memset(cp->sense_buffer, 0, sizeof(cp->sense_buffer));
1039
1040 if (!(scsi_status & SS_SENSE_LEN_VALID))
1041 break;
1042
9a853f71
AV		 1043 if (sense_len >= sizeof(cp->sense_buffer))
1044 sense_len = sizeof(cp->sense_buffer);
1da177e4 1045
9a853f71
AV		 1046 CMD_ACTUAL_SNSLEN(cp) = sense_len;
1047 sp->request_sense_length = sense_len;
1da177e4
LT		 1048 sp->request_sense_ptr = cp->sense_buffer;
1049
fa2a1ce5 1050 if (sp->request_sense_length > 32)
9a853f71 1051 sense_len = 32;
1da177e4 1052
9a853f71 1053 memcpy(cp->sense_buffer, sense_data, sense_len);
1da177e4 1054
9a853f71
AV		 1055 sp->request_sense_ptr += sense_len;
1056 sp->request_sense_length -= sense_len;
1da177e4
LT		 1057 if (sp->request_sense_length != 0)
1058 ha->status_srb = sp;
1059
1da177e4
LT		 1060 DEBUG5(printk("%s(): Check condition Sense data, "
1061 "scsi(%ld:%d:%d:%d) cmd=%p pid=%ld\n",
9a853f71
AV		 1062 __func__, ha->host_no, cp->device->channel,
1063 cp->device->id, cp->device->lun, cp,
1da177e4 1064 cp->serial_number));
9a853f71 1065
8084fe16
SS		 1066 /*
1067 * In case of a Underrun condition, set both the lscsi
1068 * status and the completion status to appropriate
1069 * values.
1070 */
1071 if (resid &&
4b39c1d9 1072 ((unsigned)(scsi_bufflen(cp) - resid) <
8084fe16
SS		 1073 cp->underflow)) {
1074 DEBUG2(qla_printk(KERN_INFO, ha,
1075 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1076 "detected (%x of %x bytes)...returning "
1077 "error status.\n", ha->host_no,
1078 cp->device->channel, cp->device->id,
1079 cp->device->lun, resid,
4b39c1d9 1080 scsi_bufflen(cp)));
8084fe16
SS		 1081
1082 cp->result = DID_ERROR << 16 | lscsi_status;
1083 }
1084
9a853f71 1085 if (sense_len)
1da177e4
LT		 1086 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
1087 CMD_ACTUAL_SNSLEN(cp)));
1088 } else {
1089 /*
1090 * If RISC reports underrun and target does not report
1091 * it then we must have a lost frame, so tell upper
1092 * layer to retry it by reporting a bus busy.
1093 */
1094 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1095 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
385d70b4
FT		 1096 "frame(s) detected (%x of %x bytes)..."
1097 "retrying command.\n", ha->host_no,
1098 cp->device->channel, cp->device->id,
1099 cp->device->lun, resid,
1100 scsi_bufflen(cp)));
1da177e4
LT		 1101
1102 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 1103 break;
1104 }
1105
1106 /* Handle mid-layer underflow */
385d70b4 1107 if ((unsigned)(scsi_bufflen(cp) - resid) <
1da177e4
LT		 1108 cp->underflow) {
1109 qla_printk(KERN_INFO, ha,
385d70b4
FT		 1110 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1111 "detected (%x of %x bytes)...returning "
1112 "error status.\n", ha->host_no,
1113 cp->device->channel, cp->device->id,
1114 cp->device->lun, resid,
1115 scsi_bufflen(cp));
1da177e4
LT		 1116
1117 cp->result = DID_ERROR << 16;
1118 break;
1119 }
1120
1121 /* Everybody online, looking good... */
1122 cp->result = DID_OK << 16;
1123 }
1124 break;
1125
1126 case CS_DATA_OVERRUN:
1127 DEBUG2(printk(KERN_INFO
1128 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
9a853f71
AV		 1129 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1130 scsi_status));
1da177e4
LT		 1131 DEBUG2(printk(KERN_INFO
1132 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1133 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1134 cp->cmnd[4], cp->cmnd[5]));
1135 DEBUG2(printk(KERN_INFO
1136 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1137 "status!\n",
385d70b4 1138 cp->serial_number, scsi_bufflen(cp), resid_len));
1da177e4
LT		 1139
1140 cp->result = DID_ERROR << 16;
1141 break;
1142
1143 case CS_PORT_LOGGED_OUT:
1144 case CS_PORT_CONFIG_CHG:
1145 case CS_PORT_BUSY:
1146 case CS_INCOMPLETE:
1147 case CS_PORT_UNAVAILABLE:
1148 /*
1149 * If the port is in Target Down state, return all IOs for this
1150 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1151 * retry_queue.
1152 */
1da177e4
LT		 1153 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1154 "pid=%ld, compl status=0x%x, port state=0x%x\n",
9a853f71
AV		 1155 ha->host_no, cp->device->id, cp->device->lun,
1156 cp->serial_number, comp_status,
1da177e4
LT		 1157 atomic_read(&fcport->state)));
1158
f4f051eb 1159 cp->result = DID_BUS_BUSY << 16;
1da177e4 1160 if (atomic_read(&fcport->state) == FCS_ONLINE) {
d97994dc 1161 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4 1162 }
1da177e4
LT		 1163 break;
1164
1165 case CS_RESET:
1166 DEBUG2(printk(KERN_INFO
1167 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1168 ha->host_no, comp_status, scsi_status));
1169
f4f051eb 1170 cp->result = DID_RESET << 16;
1da177e4
LT		 1171 break;
1172
1173 case CS_ABORTED:
fa2a1ce5 1174 /*
1da177e4
LT		 1175 * hv2.19.12 - DID_ABORT does not retry the request if we
1176 * aborted this request then abort otherwise it must be a
1177 * reset.
1178 */
1179 DEBUG2(printk(KERN_INFO
1180 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1181 ha->host_no, comp_status, scsi_status));
1182
1183 cp->result = DID_RESET << 16;
1184 break;
1185
1186 case CS_TIMEOUT:
9a853f71
AV		 1187 cp->result = DID_BUS_BUSY << 16;
1188
e428924c 1189 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 1190 DEBUG2(printk(KERN_INFO
1191 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1192 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1193 cp->device->id, cp->device->lun, comp_status,
1194 scsi_status));
1195 break;
1196 }
1da177e4
LT		 1197 DEBUG2(printk(KERN_INFO
1198 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
9a853f71
AV		 1199 "sflags=%x.\n", ha->host_no, cp->device->channel,
1200 cp->device->id, cp->device->lun, comp_status, scsi_status,
1201 le16_to_cpu(sts->status_flags)));
1da177e4 1202
9a853f71
AV		 1203 /* Check to see if logout occurred. */
1204 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
d97994dc 1205 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4
LT		 1206 break;
1207
1da177e4
LT		 1208 default:
1209 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
9a853f71 1210 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1da177e4
LT		 1211 qla_printk(KERN_INFO, ha,
1212 "Unknown status detected 0x%x-0x%x.\n",
1213 comp_status, scsi_status);
1214
1215 cp->result = DID_ERROR << 16;
1216 break;
1217 }
1218
1219 /* Place command on done queue. */
1220 if (ha->status_srb == NULL)
f4f051eb 1221 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1222}
1223
1224/**
1225 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1226 * @ha: SCSI driver HA context
1227 * @pkt: Entry pointer
1228 *
1229 * Extended sense data.
1230 */
1231static void
1232qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1233{
1234 uint8_t sense_sz = 0;
1235 srb_t *sp = ha->status_srb;
1236 struct scsi_cmnd *cp;
1237
1238 if (sp != NULL && sp->request_sense_length != 0) {
1239 cp = sp->cmd;
1240 if (cp == NULL) {
1241 DEBUG2(printk("%s(): Cmd already returned back to OS "
75bc4190 1242 "sp=%p.\n", __func__, sp));
1da177e4
LT		 1243 qla_printk(KERN_INFO, ha,
1244 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1245 sp);
1da177e4
LT		 1246
1247 ha->status_srb = NULL;
1248 return;
1249 }
1250
1251 if (sp->request_sense_length > sizeof(pkt->data)) {
1252 sense_sz = sizeof(pkt->data);
1253 } else {
1254 sense_sz = sp->request_sense_length;
1255 }
1256
1257 /* Move sense data. */
e428924c 1258 if (IS_FWI2_CAPABLE(ha))
9a853f71 1259 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1260 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1261 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1262
1263 sp->request_sense_ptr += sense_sz;
1264 sp->request_sense_length -= sense_sz;
1265
1266 /* Place command on done queue. */
1267 if (sp->request_sense_length == 0) {
1da177e4 1268 ha->status_srb = NULL;
f4f051eb 1269 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1270 }
1271 }
1272}
1273
1274/**
1275 * qla2x00_error_entry() - Process an error entry.
1276 * @ha: SCSI driver HA context
1277 * @pkt: Entry pointer
1278 */
1279static void
9a853f71 1280qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1da177e4
LT		 1281{
1282 srb_t *sp;
1283
1284#if defined(QL_DEBUG_LEVEL_2)
1285 if (pkt->entry_status & RF_INV_E_ORDER)
1286 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1287 else if (pkt->entry_status & RF_INV_E_COUNT)
1288 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1289 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1290 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1291 "%s: Invalid Entry Parameter\n", __func__);
1292 else if (pkt->entry_status & RF_INV_E_TYPE)
1293 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1294 else if (pkt->entry_status & RF_BUSY)
1295 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1296 else
1297 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1298#endif
1299
1300 /* Validate handle. */
1301 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1302 sp = ha->outstanding_cmds[pkt->handle];
1303 else
1304 sp = NULL;
1305
1306 if (sp) {
1307 /* Free outstanding command slot. */
1308 ha->outstanding_cmds[pkt->handle] = NULL;
354d6b21 1309
1da177e4
LT		 1310 /* Bad payload or header */
1311 if (pkt->entry_status &
1312 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1313 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1314 sp->cmd->result = DID_ERROR << 16;
1315 } else if (pkt->entry_status & RF_BUSY) {
1316 sp->cmd->result = DID_BUS_BUSY << 16;
1317 } else {
1318 sp->cmd->result = DID_ERROR << 16;
1319 }
f4f051eb 1320 qla2x00_sp_compl(ha, sp);
1da177e4 1321
9a853f71
AV		 1322 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1323 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4
LT		 1324 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1325 ha->host_no));
1326 qla_printk(KERN_WARNING, ha,
1327 "Error entry - invalid handle\n");
1328
1329 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 1330 qla2xxx_wake_dpc(ha);
1da177e4
LT		 1331 }
1332}
1333
1334/**
1335 * qla2x00_ms_entry() - Process a Management Server entry.
1336 * @ha: SCSI driver HA context
1337 * @index: Response queue out pointer
1338 */
1339static void
9a853f71 1340qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1da177e4
LT		 1341{
1342 srb_t *sp;
1343
1344 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1345 __func__, ha->host_no, pkt, pkt->handle1));
1346
1347 /* Validate handle. */
1348 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1349 sp = ha->outstanding_cmds[pkt->handle1];
1350 else
1351 sp = NULL;
1352
1353 if (sp == NULL) {
1354 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1355 ha->host_no));
1356 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1357
1358 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1359 return;
1360 }
1361
1362 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1363 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1364
1365 /* Free outstanding command slot. */
1366 ha->outstanding_cmds[pkt->handle1] = NULL;
1367
f4f051eb 1368 qla2x00_sp_compl(ha, sp);
1da177e4 1369}
9a853f71
AV		 1370
1371
1372/**
1373 * qla24xx_mbx_completion() - Process mailbox command completions.
1374 * @ha: SCSI driver HA context
1375 * @mb0: Mailbox0 register
1376 */
1377static void
1378qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1379{
1380 uint16_t cnt;
1381 uint16_t __iomem *wptr;
1382 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1383
1384 /* Load return mailbox registers. */
1385 ha->flags.mbox_int = 1;
1386 ha->mailbox_out[0] = mb0;
1387 wptr = (uint16_t __iomem *)&reg->mailbox1;
1388
1389 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1390 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1391 wptr++;
1392 }
1393
1394 if (ha->mcp) {
1395 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1396 __func__, ha->host_no, ha->mcp->mb[0]));
1397 } else {
1398 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1399 __func__, ha->host_no));
1400 }
1401}
1402
1403/**
1404 * qla24xx_process_response_queue() - Process response queue entries.
1405 * @ha: SCSI driver HA context
1406 */
1407void
1408qla24xx_process_response_queue(struct scsi_qla_host *ha)
1409{
1410 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1411 struct sts_entry_24xx *pkt;
1412
1413 if (!ha->flags.online)
1414 return;
1415
1416 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1417 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1418
1419 ha->rsp_ring_index++;
1420 if (ha->rsp_ring_index == ha->response_q_length) {
1421 ha->rsp_ring_index = 0;
1422 ha->response_ring_ptr = ha->response_ring;
1423 } else {
1424 ha->response_ring_ptr++;
1425 }
1426
1427 if (pkt->entry_status != 0) {
1428 DEBUG3(printk(KERN_INFO
1429 "scsi(%ld): Process error entry.\n", ha->host_no));
1430
9a853f71
AV		 1431 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1432 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1433 wmb();
1434 continue;
1435 }
1436
1437 switch (pkt->entry_type) {
1438 case STATUS_TYPE:
1439 qla2x00_status_entry(ha, pkt);
1440 break;
1441 case STATUS_CONT_TYPE:
1442 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1443 break;
1444 case MS_IOCB_TYPE:
1445 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1446 break;
2c3dfe3f
SJ		 1447 case VP_RPT_ID_IOCB_TYPE:
1448 qla24xx_report_id_acquisition(ha,
1449 (struct vp_rpt_id_entry_24xx *)pkt);
1450 break;
9a853f71
AV		 1451 default:
1452 /* Type Not Supported. */
1453 DEBUG4(printk(KERN_WARNING
1454 "scsi(%ld): Received unknown response pkt type %x "
1455 "entry status=%x.\n",
1456 ha->host_no, pkt->entry_type, pkt->entry_status));
1457 break;
1458 }
1459 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1460 wmb();
1461 }
1462
1463 /* Adjust ring index */
1464 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1465}
1466
1467/**
1468 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1469 * @irq:
1470 * @dev_id: SCSI driver HA context
9a853f71
AV		 1471 *
1472 * Called by system whenever the host adapter generates an interrupt.
1473 *
1474 * Returns handled flag.
1475 */
1476irqreturn_t
7d12e780 1477qla24xx_intr_handler(int irq, void *dev_id)
9a853f71
AV		 1478{
1479 scsi_qla_host_t *ha;
1480 struct device_reg_24xx __iomem *reg;
1481 int status;
1482 unsigned long flags;
1483 unsigned long iter;
1484 uint32_t stat;
1485 uint32_t hccr;
1486 uint16_t mb[4];
1487
1488 ha = (scsi_qla_host_t *) dev_id;
1489 if (!ha) {
1490 printk(KERN_INFO
1491 "%s(): NULL host pointer\n", __func__);
1492 return IRQ_NONE;
1493 }
1494
1495 reg = &ha->iobase->isp24;
1496 status = 0;
1497
1498 spin_lock_irqsave(&ha->hardware_lock, flags);
1499 for (iter = 50; iter--; ) {
1500 stat = RD_REG_DWORD(&reg->host_status);
1501 if (stat & HSRX_RISC_PAUSED) {
1502 hccr = RD_REG_DWORD(&reg->hccr);
1503
1504 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1505 "Dumping firmware!\n", hccr);
fd34f556 1506 ha->isp_ops->fw_dump(ha, 1);
9a853f71
AV		 1507 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1508 break;
1509 } else if ((stat & HSRX_RISC_INT) == 0)
1510 break;
1511
1512 switch (stat & 0xff) {
1513 case 0x1:
1514 case 0x2:
1515 case 0x10:
1516 case 0x11:
1517 qla24xx_mbx_completion(ha, MSW(stat));
1518 status |= MBX_INTERRUPT;
1519
1520 break;
1521 case 0x12:
1522 mb[0] = MSW(stat);
1523 mb[1] = RD_REG_WORD(&reg->mailbox1);
1524 mb[2] = RD_REG_WORD(&reg->mailbox2);
1525 mb[3] = RD_REG_WORD(&reg->mailbox3);
1526 qla2x00_async_event(ha, mb);
1527 break;
1528 case 0x13:
1529 qla24xx_process_response_queue(ha);
1530 break;
1531 default:
1532 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1533 "(%d).\n",
1534 ha->host_no, stat & 0xff));
1535 break;
1536 }
1537 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1538 RD_REG_DWORD_RELAXED(&reg->hccr);
1539 }
1540 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1541
1542 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1543 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
9a853f71
AV		 1544 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1545 up(&ha->mbx_intr_sem);
9a853f71
AV		 1546 }
1547
1548 return IRQ_HANDLED;
1549}
1550
1551/**
1552 * qla24xx_ms_entry() - Process a Management Server entry.
1553 * @ha: SCSI driver HA context
1554 * @index: Response queue out pointer
1555 */
1556static void
1557qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1558{
1559 srb_t *sp;
1560
1561 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1562 __func__, ha->host_no, pkt, pkt->handle));
1563
744f11fd
AV		 1564 DEBUG9(printk("%s: ct pkt dump:\n", __func__));
1565 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx)));
9a853f71
AV		 1566
1567 /* Validate handle. */
1568 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1569 sp = ha->outstanding_cmds[pkt->handle];
1570 else
1571 sp = NULL;
1572
1573 if (sp == NULL) {
1574 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1575 ha->host_no));
1576 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1577 ha->host_no));
1578 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1579 pkt->handle);
1580
1581 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1582 return;
1583 }
1584
1585 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1586 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1587
1588 /* Free outstanding command slot. */
1589 ha->outstanding_cmds[pkt->handle] = NULL;
1590
1591 qla2x00_sp_compl(ha, sp);
1592}
1593
a8488abe
AV		 1594static irqreturn_t
1595qla24xx_msix_rsp_q(int irq, void *dev_id)
1596{
1597 scsi_qla_host_t *ha;
1598 struct device_reg_24xx __iomem *reg;
1599 unsigned long flags;
1600
1601 ha = dev_id;
1602 reg = &ha->iobase->isp24;
1603
1604 spin_lock_irqsave(&ha->hardware_lock, flags);
1605
1606 qla24xx_process_response_queue(ha);
1607
1608 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1609 RD_REG_DWORD_RELAXED(&reg->hccr);
1610
1611 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1612
1613 return IRQ_HANDLED;
1614}
1615
1616static irqreturn_t
1617qla24xx_msix_default(int irq, void *dev_id)
1618{
1619 scsi_qla_host_t *ha;
1620 struct device_reg_24xx __iomem *reg;
1621 int status;
1622 unsigned long flags;
1623 unsigned long iter;
1624 uint32_t stat;
1625 uint32_t hccr;
1626 uint16_t mb[4];
1627
1628 ha = dev_id;
1629 reg = &ha->iobase->isp24;
1630 status = 0;
1631
1632 spin_lock_irqsave(&ha->hardware_lock, flags);
1633 for (iter = 50; iter--; ) {
1634 stat = RD_REG_DWORD(&reg->host_status);
1635 if (stat & HSRX_RISC_PAUSED) {
1636 hccr = RD_REG_DWORD(&reg->hccr);
1637
1638 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1639 "Dumping firmware!\n", hccr);
fd34f556 1640 ha->isp_ops->fw_dump(ha, 1);
a8488abe
AV		 1641 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1642 break;
1643 } else if ((stat & HSRX_RISC_INT) == 0)
1644 break;
1645
1646 switch (stat & 0xff) {
1647 case 0x1:
1648 case 0x2:
1649 case 0x10:
1650 case 0x11:
1651 qla24xx_mbx_completion(ha, MSW(stat));
1652 status |= MBX_INTERRUPT;
1653
1654 break;
1655 case 0x12:
1656 mb[0] = MSW(stat);
1657 mb[1] = RD_REG_WORD(&reg->mailbox1);
1658 mb[2] = RD_REG_WORD(&reg->mailbox2);
1659 mb[3] = RD_REG_WORD(&reg->mailbox3);
1660 qla2x00_async_event(ha, mb);
1661 break;
1662 case 0x13:
1663 qla24xx_process_response_queue(ha);
1664 break;
1665 default:
1666 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1667 "(%d).\n",
1668 ha->host_no, stat & 0xff));
1669 break;
1670 }
1671 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1672 RD_REG_DWORD_RELAXED(&reg->hccr);
1673 }
1674 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1675
1676 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1677 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
a8488abe
AV		 1678 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1679 up(&ha->mbx_intr_sem);
a8488abe
AV		 1680 }
1681
1682 return IRQ_HANDLED;
1683}
1684
1685/* Interrupt handling helpers. */
1686
1687struct qla_init_msix_entry {
1688 uint16_t entry;
1689 uint16_t index;
1690 const char *name;
476834c2 1691 irq_handler_t handler;
a8488abe
AV		 1692};
1693
1694static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = {
1695 { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
1696 "qla2xxx (default)", qla24xx_msix_default },
1697
1698 { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
1699 "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1700};
1701
1702static void
1703qla24xx_disable_msix(scsi_qla_host_t *ha)
1704{
1705 int i;
1706 struct qla_msix_entry *qentry;
1707
1708 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1709 qentry = &ha->msix_entries[imsix_entries[i].index];
1710 if (qentry->have_irq)
1711 free_irq(qentry->msix_vector, ha);
1712 }
1713 pci_disable_msix(ha->pdev);
1714}
1715
1716static int
1717qla24xx_enable_msix(scsi_qla_host_t *ha)
1718{
1719 int i, ret;
1720 struct msix_entry entries[QLA_MSIX_ENTRIES];
1721 struct qla_msix_entry *qentry;
1722
1723 for (i = 0; i < QLA_MSIX_ENTRIES; i++)
1724 entries[i].entry = imsix_entries[i].entry;
1725
1726 ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries));
1727 if (ret) {
1728 qla_printk(KERN_WARNING, ha,
1729 "MSI-X: Failed to enable support -- %d/%d\n",
1730 QLA_MSIX_ENTRIES, ret);
1731 goto msix_out;
1732 }
1733 ha->flags.msix_enabled = 1;
1734
1735 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1736 qentry = &ha->msix_entries[imsix_entries[i].index];
1737 qentry->msix_vector = entries[i].vector;
1738 qentry->msix_entry = entries[i].entry;
1739 qentry->have_irq = 0;
1740 ret = request_irq(qentry->msix_vector,
1741 imsix_entries[i].handler, 0, imsix_entries[i].name, ha);
1742 if (ret) {
1743 qla_printk(KERN_WARNING, ha,
1744 "MSI-X: Unable to register handler -- %x/%d.\n",
1745 imsix_entries[i].index, ret);
1746 qla24xx_disable_msix(ha);
1747 goto msix_out;
1748 }
1749 qentry->have_irq = 1;
1750 }
1751
1752msix_out:
1753 return ret;
1754}
1755
1756int
1757qla2x00_request_irqs(scsi_qla_host_t *ha)
1758{
1759 int ret;
1760
1761 /* If possible, enable MSI-X. */
c3a2f0df 1762 if (!IS_QLA2432(ha) && !IS_QLA2532(ha))
a8488abe
AV		 1763 goto skip_msix;
1764
c3a2f0df
AV		 1765 if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
1766 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
a8488abe
AV		 1767 DEBUG2(qla_printk(KERN_WARNING, ha,
1768 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1769 ha->chip_revision, ha->fw_attributes));
1770
1771 goto skip_msix;
1772 }
1773
1774 ret = qla24xx_enable_msix(ha);
1775 if (!ret) {
1776 DEBUG2(qla_printk(KERN_INFO, ha,
1777 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
1778 ha->fw_attributes));
1779 return ret;
1780 }
1781 qla_printk(KERN_WARNING, ha,
1782 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
1783skip_msix:
cbedb601 1784
c3a2f0df 1785 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha))
cbedb601
AV		 1786 goto skip_msi;
1787
1788 ret = pci_enable_msi(ha->pdev);
1789 if (!ret) {
1790 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
1791 ha->flags.msi_enabled = 1;
1792 }
1793skip_msi:
1794
fd34f556 1795 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
a8488abe 1796 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
d88021a6
AV		 1797 if (!ret) {
1798 ha->flags.inta_enabled = 1;
1799 ha->host->irq = ha->pdev->irq;
1800 } else {
a8488abe
AV		 1801 qla_printk(KERN_WARNING, ha,
1802 "Failed to reserve interrupt %d already in use.\n",
1803 ha->pdev->irq);
1804 }
a8488abe
AV		 1805
1806 return ret;
1807}
1808
1809void
1810qla2x00_free_irqs(scsi_qla_host_t *ha)
1811{
1812
1813 if (ha->flags.msix_enabled)
1814 qla24xx_disable_msix(ha);
cbedb601 1815 else if (ha->flags.inta_enabled) {
a8488abe 1816 free_irq(ha->host->irq, ha);
cbedb601
AV		 1817 pci_disable_msi(ha->pdev);
1818 }
a8488abe 1819}
Linux kernel - Deliverables
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