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[SCSI] qla2xxx: Use an rport's scsi_target_id member consistently throughout driver.
[linux-2.6-block.git] / drivers / scsi / qla2xxx / qla_isr.c
CommitLineData
1da177e4 1/*
fa90c54f 2 * QLogic Fibre Channel HBA Driver
01e58d8e 3 * Copyright (c) 2003-2008 QLogic Corporation
1da177e4 4 *
fa90c54f 5 * See LICENSE.qla2xxx for copyright and licensing details.
1da177e4
LT		 6 */
7#include "qla_def.h"
8
05236a05 9#include <linux/delay.h>
df7baa50
AV		 10#include <scsi/scsi_tcq.h>
11
1da177e4 12static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
1da177e4 13static void qla2x00_process_completed_request(struct scsi_qla_host *, uint32_t);
9a853f71 14static void qla2x00_status_entry(scsi_qla_host_t *, void *);
1da177e4
LT		 15static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
16static void qla2x00_error_entry(scsi_qla_host_t *, sts_entry_t *);
17static void qla2x00_ms_entry(scsi_qla_host_t *, ms_iocb_entry_t *);
18
9a853f71
AV		 19static void qla24xx_ms_entry(scsi_qla_host_t *, struct ct_entry_24xx *);
20
1da177e4
LT		 21/**
22 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
23 * @irq:
24 * @dev_id: SCSI driver HA context
1da177e4
LT		 25 *
26 * Called by system whenever the host adapter generates an interrupt.
27 *
28 * Returns handled flag.
29 */
30irqreturn_t
7d12e780 31qla2100_intr_handler(int irq, void *dev_id)
1da177e4
LT		 32{
33 scsi_qla_host_t *ha;
3d71644c 34 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 35 int status;
36 unsigned long flags;
37 unsigned long iter;
14e660e6 38 uint16_t hccr;
9a853f71 39 uint16_t mb[4];
1da177e4
LT		 40
41 ha = (scsi_qla_host_t *) dev_id;
42 if (!ha) {
43 printk(KERN_INFO
44 "%s(): NULL host pointer\n", __func__);
45 return (IRQ_NONE);
46 }
47
3d71644c 48 reg = &ha->iobase->isp;
1da177e4
LT		 49 status = 0;
50
51 spin_lock_irqsave(&ha->hardware_lock, flags);
52 for (iter = 50; iter--; ) {
14e660e6
SJ		 53 hccr = RD_REG_WORD(&reg->hccr);
54 if (hccr & HCCR_RISC_PAUSE) {
55 if (pci_channel_offline(ha->pdev))
56 break;
57
58 /*
59 * Issue a "HARD" reset in order for the RISC interrupt
60 * bit to be cleared. Schedule a big hammmer to get
61 * out of the RISC PAUSED state.
62 */
63 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
64 RD_REG_WORD(&reg->hccr);
65
66 ha->isp_ops->fw_dump(ha, 1);
67 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
68 break;
69 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
1da177e4
LT		 70 break;
71
72 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
73 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
74 RD_REG_WORD(&reg->hccr);
75
76 /* Get mailbox data. */
9a853f71
AV		 77 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
78 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
79 qla2x00_mbx_completion(ha, mb[0]);
1da177e4 80 status |= MBX_INTERRUPT;
9a853f71
AV		 81 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
82 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
83 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
84 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
85 qla2x00_async_event(ha, mb);
1da177e4
LT		 86 } else {
87 /*EMPTY*/
88 DEBUG2(printk("scsi(%ld): Unrecognized "
9a853f71
AV		 89 "interrupt type (%d).\n",
90 ha->host_no, mb[0]));
1da177e4
LT		 91 }
92 /* Release mailbox registers. */
93 WRT_REG_WORD(&reg->semaphore, 0);
94 RD_REG_WORD(&reg->semaphore);
95 } else {
96 qla2x00_process_response_queue(ha);
97
98 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
99 RD_REG_WORD(&reg->hccr);
100 }
101 }
102 spin_unlock_irqrestore(&ha->hardware_lock, flags);
103
1da177e4
LT		 104 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
105 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1da177e4 106 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 107 complete(&ha->mbx_intr_comp);
1da177e4
LT		 108 }
109
1da177e4
LT		 110 return (IRQ_HANDLED);
111}
112
113/**
114 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
115 * @irq:
116 * @dev_id: SCSI driver HA context
1da177e4
LT		 117 *
118 * Called by system whenever the host adapter generates an interrupt.
119 *
120 * Returns handled flag.
121 */
122irqreturn_t
7d12e780 123qla2300_intr_handler(int irq, void *dev_id)
1da177e4
LT		 124{
125 scsi_qla_host_t *ha;
3d71644c 126 struct device_reg_2xxx __iomem *reg;
1da177e4
LT		 127 int status;
128 unsigned long flags;
129 unsigned long iter;
130 uint32_t stat;
1da177e4 131 uint16_t hccr;
9a853f71 132 uint16_t mb[4];
1da177e4
LT		 133
134 ha = (scsi_qla_host_t *) dev_id;
135 if (!ha) {
136 printk(KERN_INFO
137 "%s(): NULL host pointer\n", __func__);
138 return (IRQ_NONE);
139 }
140
3d71644c 141 reg = &ha->iobase->isp;
1da177e4
LT		 142 status = 0;
143
144 spin_lock_irqsave(&ha->hardware_lock, flags);
145 for (iter = 50; iter--; ) {
146 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
147 if (stat & HSR_RISC_PAUSED) {
14e660e6
SJ		 148 if (pci_channel_offline(ha->pdev))
149 break;
150
1da177e4
LT		 151 hccr = RD_REG_WORD(&reg->hccr);
152 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
07f31805
AV		 153 qla_printk(KERN_INFO, ha, "Parity error -- "
154 "HCCR=%x, Dumping firmware!\n", hccr);
1da177e4 155 else
07f31805
AV		 156 qla_printk(KERN_INFO, ha, "RISC paused -- "
157 "HCCR=%x, Dumping firmware!\n", hccr);
1da177e4
LT		 158
159 /*
160 * Issue a "HARD" reset in order for the RISC
161 * interrupt bit to be cleared. Schedule a big
162 * hammmer to get out of the RISC PAUSED state.
163 */
164 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
165 RD_REG_WORD(&reg->hccr);
07f31805 166
fd34f556 167 ha->isp_ops->fw_dump(ha, 1);
1da177e4
LT		 168 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
169 break;
170 } else if ((stat & HSR_RISC_INT) == 0)
171 break;
172
1da177e4 173 switch (stat & 0xff) {
1da177e4
LT		 174 case 0x1:
175 case 0x2:
176 case 0x10:
177 case 0x11:
9a853f71 178 qla2x00_mbx_completion(ha, MSW(stat));
1da177e4
LT		 179 status |= MBX_INTERRUPT;
180
181 /* Release mailbox registers. */
182 WRT_REG_WORD(&reg->semaphore, 0);
183 break;
184 case 0x12:
9a853f71
AV		 185 mb[0] = MSW(stat);
186 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
187 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
188 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
189 qla2x00_async_event(ha, mb);
190 break;
191 case 0x13:
192 qla2x00_process_response_queue(ha);
1da177e4
LT		 193 break;
194 case 0x15:
9a853f71
AV		 195 mb[0] = MBA_CMPLT_1_16BIT;
196 mb[1] = MSW(stat);
197 qla2x00_async_event(ha, mb);
1da177e4
LT		 198 break;
199 case 0x16:
9a853f71
AV		 200 mb[0] = MBA_SCSI_COMPLETION;
201 mb[1] = MSW(stat);
202 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
203 qla2x00_async_event(ha, mb);
1da177e4
LT		 204 break;
205 default:
206 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
9a853f71 207 "(%d).\n",
1da177e4
LT		 208 ha->host_no, stat & 0xff));
209 break;
210 }
211 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
212 RD_REG_WORD_RELAXED(&reg->hccr);
213 }
214 spin_unlock_irqrestore(&ha->hardware_lock, flags);
215
1da177e4
LT		 216 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
217 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1da177e4 218 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 219 complete(&ha->mbx_intr_comp);
1da177e4
LT		 220 }
221
1da177e4
LT		 222 return (IRQ_HANDLED);
223}
224
225/**
226 * qla2x00_mbx_completion() - Process mailbox command completions.
227 * @ha: SCSI driver HA context
228 * @mb0: Mailbox0 register
229 */
230static void
231qla2x00_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
232{
233 uint16_t cnt;
234 uint16_t __iomem *wptr;
3d71644c 235 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 236
237 /* Load return mailbox registers. */
238 ha->flags.mbox_int = 1;
239 ha->mailbox_out[0] = mb0;
240 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
241
242 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
fa2a1ce5 243 if (IS_QLA2200(ha) && cnt == 8)
1da177e4
LT		 244 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
245 if (cnt == 4 || cnt == 5)
246 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
247 else
248 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
fa2a1ce5 249
1da177e4
LT		 250 wptr++;
251 }
252
253 if (ha->mcp) {
254 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
255 __func__, ha->host_no, ha->mcp->mb[0]));
256 } else {
257 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
258 __func__, ha->host_no));
259 }
260}
261
262/**
263 * qla2x00_async_event() - Process aynchronous events.
264 * @ha: SCSI driver HA context
9a853f71 265 * @mb: Mailbox registers (0 - 3)
1da177e4 266 */
2c3dfe3f 267void
9a853f71 268qla2x00_async_event(scsi_qla_host_t *ha, uint16_t *mb)
1da177e4 269{
9a853f71 270#define LS_UNKNOWN 2
c3a2f0df 271 static char *link_speeds[5] = { "1", "2", "?", "4", "8" };
1da177e4 272 char *link_speed;
1da177e4
LT		 273 uint16_t handle_cnt;
274 uint16_t cnt;
275 uint32_t handles[5];
3d71644c 276 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 277 uint32_t rscn_entry, host_pid;
278 uint8_t rscn_queue_index;
279
280 /* Setup to process RIO completion. */
281 handle_cnt = 0;
1da177e4
LT		 282 switch (mb[0]) {
283 case MBA_SCSI_COMPLETION:
9a853f71 284 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 285 handle_cnt = 1;
286 break;
287 case MBA_CMPLT_1_16BIT:
9a853f71 288 handles[0] = mb[1];
1da177e4
LT		 289 handle_cnt = 1;
290 mb[0] = MBA_SCSI_COMPLETION;
291 break;
292 case MBA_CMPLT_2_16BIT:
9a853f71
AV		 293 handles[0] = mb[1];
294 handles[1] = mb[2];
1da177e4
LT		 295 handle_cnt = 2;
296 mb[0] = MBA_SCSI_COMPLETION;
297 break;
298 case MBA_CMPLT_3_16BIT:
9a853f71
AV		 299 handles[0] = mb[1];
300 handles[1] = mb[2];
301 handles[2] = mb[3];
1da177e4
LT		 302 handle_cnt = 3;
303 mb[0] = MBA_SCSI_COMPLETION;
304 break;
305 case MBA_CMPLT_4_16BIT:
9a853f71
AV		 306 handles[0] = mb[1];
307 handles[1] = mb[2];
308 handles[2] = mb[3];
1da177e4
LT		 309 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
310 handle_cnt = 4;
311 mb[0] = MBA_SCSI_COMPLETION;
312 break;
313 case MBA_CMPLT_5_16BIT:
9a853f71
AV		 314 handles[0] = mb[1];
315 handles[1] = mb[2];
316 handles[2] = mb[3];
1da177e4
LT		 317 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
318 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
319 handle_cnt = 5;
320 mb[0] = MBA_SCSI_COMPLETION;
321 break;
322 case MBA_CMPLT_2_32BIT:
9a853f71 323 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
1da177e4
LT		 324 handles[1] = le32_to_cpu(
325 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
326 RD_MAILBOX_REG(ha, reg, 6));
327 handle_cnt = 2;
328 mb[0] = MBA_SCSI_COMPLETION;
329 break;
330 default:
331 break;
332 }
333
334 switch (mb[0]) {
335 case MBA_SCSI_COMPLETION: /* Fast Post */
336 if (!ha->flags.online)
337 break;
338
339 for (cnt = 0; cnt < handle_cnt; cnt++)
340 qla2x00_process_completed_request(ha, handles[cnt]);
341 break;
342
343 case MBA_RESET: /* Reset */
344 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n", ha->host_no));
345
346 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
347 break;
348
349 case MBA_SYSTEM_ERR: /* System Error */
1da177e4
LT		 350 qla_printk(KERN_INFO, ha,
351 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
352 mb[1], mb[2], mb[3]);
353
fd34f556 354 ha->isp_ops->fw_dump(ha, 1);
1da177e4 355
e428924c 356 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 357 if (mb[1] == 0 && mb[2] == 0) {
358 qla_printk(KERN_ERR, ha,
359 "Unrecoverable Hardware Error: adapter "
360 "marked OFFLINE!\n");
361 ha->flags.online = 0;
362 } else
363 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
364 } else if (mb[1] == 0) {
1da177e4
LT		 365 qla_printk(KERN_INFO, ha,
366 "Unrecoverable Hardware Error: adapter marked "
367 "OFFLINE!\n");
368 ha->flags.online = 0;
369 } else
370 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
371 break;
372
373 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
374 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
375 ha->host_no));
376 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
377
378 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
379 break;
380
381 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
382 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
383 ha->host_no));
384 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
385
386 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
387 break;
388
389 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
390 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
391 ha->host_no));
392 break;
393
394 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
1da177e4
LT		 395 DEBUG2(printk("scsi(%ld): LIP occured (%x).\n", ha->host_no,
396 mb[1]));
397 qla_printk(KERN_INFO, ha, "LIP occured (%x).\n", mb[1]);
398
399 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
400 atomic_set(&ha->loop_state, LOOP_DOWN);
401 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 402 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 403 }
404
2c3dfe3f
SJ		 405 if (ha->parent) {
406 atomic_set(&ha->vp_state, VP_FAILED);
407 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
408 }
409
1da177e4
LT		 410 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
411
412 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 413 break;
414
415 case MBA_LOOP_UP: /* Loop Up Event */
1da177e4
LT		 416 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
417 link_speed = link_speeds[0];
d8b45213 418 ha->link_data_rate = PORT_SPEED_1GB;
1da177e4 419 } else {
9a853f71 420 link_speed = link_speeds[LS_UNKNOWN];
1da177e4
LT		 421 if (mb[1] < 5)
422 link_speed = link_speeds[mb[1]];
423 ha->link_data_rate = mb[1];
424 }
425
426 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
427 ha->host_no, link_speed));
428 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
429 link_speed);
430
431 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 432 break;
433
434 case MBA_LOOP_DOWN: /* Loop Down Event */
9a853f71
AV		 435 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN (%x).\n",
436 ha->host_no, mb[1]));
437 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x).\n", mb[1]);
1da177e4
LT		 438
439 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
440 atomic_set(&ha->loop_state, LOOP_DOWN);
441 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
442 ha->device_flags |= DFLG_NO_CABLE;
d97994dc 443 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 444 }
445
2c3dfe3f
SJ		 446 if (ha->parent) {
447 atomic_set(&ha->vp_state, VP_FAILED);
448 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
449 }
450
1da177e4 451 ha->flags.management_server_logged_in = 0;
d8b45213 452 ha->link_data_rate = PORT_SPEED_UNKNOWN;
cca5335c
AV		 453 if (ql2xfdmienable)
454 set_bit(REGISTER_FDMI_NEEDED, &ha->dpc_flags);
1da177e4
LT		 455 break;
456
457 case MBA_LIP_RESET: /* LIP reset occurred */
1da177e4
LT		 458 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
459 ha->host_no, mb[1]));
460 qla_printk(KERN_INFO, ha,
461 "LIP reset occured (%x).\n", mb[1]);
462
463 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
464 atomic_set(&ha->loop_state, LOOP_DOWN);
465 atomic_set(&ha->loop_down_timer, LOOP_DOWN_TIME);
d97994dc 466 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 467 }
468
2c3dfe3f
SJ		 469 if (ha->parent) {
470 atomic_set(&ha->vp_state, VP_FAILED);
471 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
472 }
473
1da177e4
LT		 474 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
475
476 ha->operating_mode = LOOP;
477 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 478 break;
479
480 case MBA_POINT_TO_POINT: /* Point-to-Point */
481 if (IS_QLA2100(ha))
482 break;
483
484 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
485 ha->host_no));
486
487 /*
488 * Until there's a transition from loop down to loop up, treat
489 * this as loop down only.
490 */
491 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
492 atomic_set(&ha->loop_state, LOOP_DOWN);
493 if (!atomic_read(&ha->loop_down_timer))
494 atomic_set(&ha->loop_down_timer,
495 LOOP_DOWN_TIME);
d97994dc 496 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 497 }
498
2c3dfe3f
SJ		 499 if (ha->parent) {
500 atomic_set(&ha->vp_state, VP_FAILED);
501 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
502 }
503
1da177e4
LT		 504 if (!(test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags))) {
505 set_bit(RESET_MARKER_NEEDED, &ha->dpc_flags);
506 }
507 set_bit(REGISTER_FC4_NEEDED, &ha->dpc_flags);
4346b149
AV		 508
509 ha->flags.gpsc_supported = 1;
02d638b4 510 ha->flags.management_server_logged_in = 0;
1da177e4
LT		 511 break;
512
513 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
514 if (IS_QLA2100(ha))
515 break;
516
1da177e4
LT		 517 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
518 "received.\n",
519 ha->host_no));
520 qla_printk(KERN_INFO, ha,
521 "Configuration change detected: value=%x.\n", mb[1]);
522
523 if (atomic_read(&ha->loop_state) != LOOP_DOWN) {
fa2a1ce5 524 atomic_set(&ha->loop_state, LOOP_DOWN);
1da177e4
LT		 525 if (!atomic_read(&ha->loop_down_timer))
526 atomic_set(&ha->loop_down_timer,
527 LOOP_DOWN_TIME);
d97994dc 528 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 529 }
530
2c3dfe3f
SJ		 531 if (ha->parent) {
532 atomic_set(&ha->vp_state, VP_FAILED);
533 fc_vport_set_state(ha->fc_vport, FC_VPORT_FAILED);
534 }
535
1da177e4
LT		 536 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
537 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
538 break;
539
540 case MBA_PORT_UPDATE: /* Port database update */
1da177e4
LT		 541 /*
542 * If PORT UPDATE is global (recieved LIP_OCCURED/LIP_RESET
543 * event etc. earlier indicating loop is down) then process
544 * it. Otherwise ignore it and Wait for RSCN to come in.
545 */
546 atomic_set(&ha->loop_down_timer, 0);
547 if (atomic_read(&ha->loop_state) != LOOP_DOWN &&
548 atomic_read(&ha->loop_state) != LOOP_DEAD) {
549 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
9a853f71
AV		 550 "ignored %04x/%04x/%04x.\n", ha->host_no, mb[1],
551 mb[2], mb[3]));
1da177e4
LT		 552 break;
553 }
554
555 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
556 ha->host_no));
557 DEBUG(printk(KERN_INFO
9a853f71
AV		 558 "scsi(%ld): Port database changed %04x %04x %04x.\n",
559 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 560
561 /*
562 * Mark all devices as missing so we will login again.
563 */
564 atomic_set(&ha->loop_state, LOOP_UP);
565
d97994dc 566 qla2x00_mark_all_devices_lost(ha, 1);
1da177e4
LT		 567
568 ha->flags.rscn_queue_overflow = 1;
569
570 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
571 set_bit(LOCAL_LOOP_UPDATE, &ha->dpc_flags);
1da177e4
LT		 572 break;
573
574 case MBA_RSCN_UPDATE: /* State Change Registration */
2c3dfe3f
SJ		 575 /* Check if the Vport has issued a SCR */
576 if (ha->parent && test_bit(VP_SCR_NEEDED, &ha->vp_flags))
577 break;
f4a8dbc7
SS		 578 /* Only handle SCNs for our Vport index. */
579 if (ha->flags.npiv_supported && ha->vp_idx != mb[3])
580 break;
2c3dfe3f 581
1da177e4
LT		 582 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
583 ha->host_no));
584 DEBUG(printk(KERN_INFO
f4a8dbc7
SS		 585 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
586 ha->host_no, mb[1], mb[2], mb[3]));
1da177e4
LT		 587
588 rscn_entry = (mb[1] << 16) | mb[2];
589 host_pid = (ha->d_id.b.domain << 16) | (ha->d_id.b.area << 8) |
590 ha->d_id.b.al_pa;
591 if (rscn_entry == host_pid) {
592 DEBUG(printk(KERN_INFO
593 "scsi(%ld): Ignoring RSCN update to local host "
594 "port ID (%06x)\n",
595 ha->host_no, host_pid));
596 break;
597 }
598
599 rscn_queue_index = ha->rscn_in_ptr + 1;
600 if (rscn_queue_index == MAX_RSCN_COUNT)
601 rscn_queue_index = 0;
602 if (rscn_queue_index != ha->rscn_out_ptr) {
603 ha->rscn_queue[ha->rscn_in_ptr] = rscn_entry;
604 ha->rscn_in_ptr = rscn_queue_index;
605 } else {
606 ha->flags.rscn_queue_overflow = 1;
607 }
608
609 atomic_set(&ha->loop_state, LOOP_UPDATE);
610 atomic_set(&ha->loop_down_timer, 0);
611 ha->flags.management_server_logged_in = 0;
612
613 set_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags);
614 set_bit(RSCN_UPDATE, &ha->dpc_flags);
1da177e4
LT		 615 break;
616
617 /* case MBA_RIO_RESPONSE: */
618 case MBA_ZIO_RESPONSE:
619 DEBUG2(printk("scsi(%ld): [R|Z]IO update completion.\n",
620 ha->host_no));
621 DEBUG(printk(KERN_INFO
622 "scsi(%ld): [R|Z]IO update completion.\n",
623 ha->host_no));
624
e428924c 625 if (IS_FWI2_CAPABLE(ha))
4fdfefe5
AV		 626 qla24xx_process_response_queue(ha);
627 else
628 qla2x00_process_response_queue(ha);
1da177e4 629 break;
9a853f71
AV		 630
631 case MBA_DISCARD_RND_FRAME:
632 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
633 "%04x.\n", ha->host_no, mb[1], mb[2], mb[3]));
634 break;
45ebeb56
AV		 635
636 case MBA_TRACE_NOTIFICATION:
637 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
638 ha->host_no, mb[1], mb[2]));
639 break;
1da177e4 640 }
2c3dfe3f
SJ		 641
642 if (!ha->parent && ha->num_vhosts)
643 qla2x00_alert_all_vps(ha, mb);
1da177e4
LT		 644}
645
df7baa50
AV		 646static void
647qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
648{
649 fc_port_t *fcport = data;
650
651 if (fcport->ha->max_q_depth <= sdev->queue_depth)
652 return;
653
654 if (sdev->ordered_tags)
655 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
656 sdev->queue_depth + 1);
657 else
658 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
659 sdev->queue_depth + 1);
660
661 fcport->last_ramp_up = jiffies;
662
663 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
664 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
665 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
666 sdev->queue_depth));
667}
668
669static void
670qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
671{
672 fc_port_t *fcport = data;
673
674 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
675 return;
676
677 DEBUG2(qla_printk(KERN_INFO, fcport->ha,
678 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
679 fcport->ha->host_no, sdev->channel, sdev->id, sdev->lun,
680 sdev->queue_depth));
681}
682
683static inline void
684qla2x00_ramp_up_queue_depth(scsi_qla_host_t *ha, srb_t *sp)
685{
686 fc_port_t *fcport;
687 struct scsi_device *sdev;
688
689 sdev = sp->cmd->device;
690 if (sdev->queue_depth >= ha->max_q_depth)
691 return;
692
693 fcport = sp->fcport;
694 if (time_before(jiffies,
695 fcport->last_ramp_up + ql2xqfullrampup * HZ))
696 return;
697 if (time_before(jiffies,
698 fcport->last_queue_full + ql2xqfullrampup * HZ))
699 return;
700
df7baa50
AV		 701 starget_for_each_device(sdev->sdev_target, fcport,
702 qla2x00_adjust_sdev_qdepth_up);
df7baa50
AV		 703}
704
1da177e4
LT		 705/**
706 * qla2x00_process_completed_request() - Process a Fast Post response.
707 * @ha: SCSI driver HA context
708 * @index: SRB index
709 */
710static void
711qla2x00_process_completed_request(struct scsi_qla_host *ha, uint32_t index)
712{
713 srb_t *sp;
714
715 /* Validate handle. */
716 if (index >= MAX_OUTSTANDING_COMMANDS) {
717 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
718 ha->host_no, index));
719 qla_printk(KERN_WARNING, ha,
720 "Invalid SCSI completion handle %d.\n", index);
721
722 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
723 return;
724 }
725
726 sp = ha->outstanding_cmds[index];
727 if (sp) {
728 /* Free outstanding command slot. */
729 ha->outstanding_cmds[index] = NULL;
730
1da177e4
LT		 731 CMD_COMPL_STATUS(sp->cmd) = 0L;
732 CMD_SCSI_STATUS(sp->cmd) = 0L;
733
734 /* Save ISP completion status */
735 sp->cmd->result = DID_OK << 16;
df7baa50
AV		 736
737 qla2x00_ramp_up_queue_depth(ha, sp);
f4f051eb 738 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 739 } else {
740 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
741 ha->host_no));
742 qla_printk(KERN_WARNING, ha,
743 "Invalid ISP SCSI completion handle\n");
744
745 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
746 }
747}
748
749/**
750 * qla2x00_process_response_queue() - Process response queue entries.
751 * @ha: SCSI driver HA context
752 */
753void
754qla2x00_process_response_queue(struct scsi_qla_host *ha)
755{
3d71644c 756 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1da177e4
LT		 757 sts_entry_t *pkt;
758 uint16_t handle_cnt;
759 uint16_t cnt;
760
761 if (!ha->flags.online)
762 return;
763
764 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
765 pkt = (sts_entry_t *)ha->response_ring_ptr;
766
767 ha->rsp_ring_index++;
768 if (ha->rsp_ring_index == ha->response_q_length) {
769 ha->rsp_ring_index = 0;
770 ha->response_ring_ptr = ha->response_ring;
771 } else {
772 ha->response_ring_ptr++;
773 }
774
775 if (pkt->entry_status != 0) {
776 DEBUG3(printk(KERN_INFO
777 "scsi(%ld): Process error entry.\n", ha->host_no));
778
779 qla2x00_error_entry(ha, pkt);
780 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
781 wmb();
782 continue;
783 }
784
785 switch (pkt->entry_type) {
786 case STATUS_TYPE:
787 qla2x00_status_entry(ha, pkt);
788 break;
789 case STATUS_TYPE_21:
790 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
791 for (cnt = 0; cnt < handle_cnt; cnt++) {
792 qla2x00_process_completed_request(ha,
793 ((sts21_entry_t *)pkt)->handle[cnt]);
794 }
795 break;
796 case STATUS_TYPE_22:
797 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
798 for (cnt = 0; cnt < handle_cnt; cnt++) {
799 qla2x00_process_completed_request(ha,
800 ((sts22_entry_t *)pkt)->handle[cnt]);
801 }
802 break;
803 case STATUS_CONT_TYPE:
804 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
805 break;
806 case MS_IOCB_TYPE:
807 qla2x00_ms_entry(ha, (ms_iocb_entry_t *)pkt);
808 break;
1da177e4
LT		 809 default:
810 /* Type Not Supported. */
811 DEBUG4(printk(KERN_WARNING
812 "scsi(%ld): Received unknown response pkt type %x "
813 "entry status=%x.\n",
814 ha->host_no, pkt->entry_type, pkt->entry_status));
815 break;
816 }
817 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
818 wmb();
819 }
820
821 /* Adjust ring index */
822 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), ha->rsp_ring_index);
823}
824
4733fcb1
AV		 825static inline void
826qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
827{
828 struct scsi_cmnd *cp = sp->cmd;
829
830 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
831 sense_len = SCSI_SENSE_BUFFERSIZE;
832
833 CMD_ACTUAL_SNSLEN(cp) = sense_len;
834 sp->request_sense_length = sense_len;
835 sp->request_sense_ptr = cp->sense_buffer;
836 if (sp->request_sense_length > 32)
837 sense_len = 32;
838
839 memcpy(cp->sense_buffer, sense_data, sense_len);
840
841 sp->request_sense_ptr += sense_len;
842 sp->request_sense_length -= sense_len;
843 if (sp->request_sense_length != 0)
844 sp->ha->status_srb = sp;
845
846 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
847 "cmd=%p pid=%ld\n", __func__, sp->ha->host_no, cp->device->channel,
848 cp->device->id, cp->device->lun, cp, cp->serial_number));
849 if (sense_len)
850 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
851 CMD_ACTUAL_SNSLEN(cp)));
852}
853
1da177e4
LT		 854/**
855 * qla2x00_status_entry() - Process a Status IOCB entry.
856 * @ha: SCSI driver HA context
857 * @pkt: Entry pointer
858 */
859static void
9a853f71 860qla2x00_status_entry(scsi_qla_host_t *ha, void *pkt)
1da177e4 861{
1da177e4 862 srb_t *sp;
1da177e4
LT		 863 fc_port_t *fcport;
864 struct scsi_cmnd *cp;
9a853f71
AV		 865 sts_entry_t *sts;
866 struct sts_entry_24xx *sts24;
1da177e4
LT		 867 uint16_t comp_status;
868 uint16_t scsi_status;
869 uint8_t lscsi_status;
870 int32_t resid;
ed17c71b 871 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
9a853f71
AV		 872 uint8_t *rsp_info, *sense_data;
873
874 sts = (sts_entry_t *) pkt;
875 sts24 = (struct sts_entry_24xx *) pkt;
e428924c 876 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 877 comp_status = le16_to_cpu(sts24->comp_status);
878 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
879 } else {
880 comp_status = le16_to_cpu(sts->comp_status);
881 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
882 }
1da177e4
LT		 883
884 /* Fast path completion. */
9a853f71
AV		 885 if (comp_status == CS_COMPLETE && scsi_status == 0) {
886 qla2x00_process_completed_request(ha, sts->handle);
1da177e4
LT		 887
888 return;
889 }
890
891 /* Validate handle. */
9a853f71
AV		 892 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
893 sp = ha->outstanding_cmds[sts->handle];
894 ha->outstanding_cmds[sts->handle] = NULL;
1da177e4
LT		 895 } else
896 sp = NULL;
897
898 if (sp == NULL) {
899 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
900 ha->host_no));
901 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
902
903 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 904 qla2xxx_wake_dpc(ha);
1da177e4
LT		 905 return;
906 }
907 cp = sp->cmd;
908 if (cp == NULL) {
909 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
75bc4190 910 "pkt->handle=%d sp=%p.\n", ha->host_no, sts->handle, sp));
1da177e4
LT		 911 qla_printk(KERN_WARNING, ha,
912 "Command is NULL: already returned to OS (sp=%p)\n", sp);
913
914 return;
915 }
916
9a853f71
AV		 917 lscsi_status = scsi_status & STATUS_MASK;
918 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1da177e4
LT		 919 CMD_COMPL_STATUS(cp) = comp_status;
920 CMD_SCSI_STATUS(cp) = scsi_status;
921
bdf79621 922 fcport = sp->fcport;
1da177e4 923
ed17c71b 924 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
e428924c 925 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 926 sense_len = le32_to_cpu(sts24->sense_len);
927 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
928 resid_len = le32_to_cpu(sts24->rsp_residual_count);
ed17c71b 929 fw_resid_len = le32_to_cpu(sts24->residual_len);
9a853f71
AV		 930 rsp_info = sts24->data;
931 sense_data = sts24->data;
932 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
933 } else {
934 sense_len = le16_to_cpu(sts->req_sense_length);
935 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
936 resid_len = le32_to_cpu(sts->residual_length);
937 rsp_info = sts->rsp_info;
938 sense_data = sts->req_sense_data;
939 }
940
1da177e4
LT		 941 /* Check for any FCP transport errors. */
942 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
9a853f71 943 /* Sense data lies beyond any FCP RESPONSE data. */
e428924c 944 if (IS_FWI2_CAPABLE(ha))
9a853f71
AV		 945 sense_data += rsp_info_len;
946 if (rsp_info_len > 3 && rsp_info[3]) {
1da177e4
LT		 947 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
948 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
9a853f71
AV		 949 "retrying command\n", ha->host_no,
950 cp->device->channel, cp->device->id,
951 cp->device->lun, rsp_info_len, rsp_info[0],
952 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
953 rsp_info[5], rsp_info[6], rsp_info[7]));
1da177e4
LT		 954
955 cp->result = DID_BUS_BUSY << 16;
f4f051eb 956 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 957 return;
958 }
959 }
960
3e8ce320
AV		 961 /* Check for overrun. */
962 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
963 scsi_status & SS_RESIDUAL_OVER)
964 comp_status = CS_DATA_OVERRUN;
965
1da177e4
LT		 966 /*
967 * Based on Host and scsi status generate status code for Linux
968 */
969 switch (comp_status) {
970 case CS_COMPLETE:
df7baa50 971 case CS_QUEUE_FULL:
1da177e4
LT		 972 if (scsi_status == 0) {
973 cp->result = DID_OK << 16;
974 break;
975 }
976 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
9a853f71 977 resid = resid_len;
385d70b4 978 scsi_set_resid(cp, resid);
1da177e4 979 CMD_RESID_LEN(cp) = resid;
0da69df1
AV		 980
981 if (!lscsi_status &&
385d70b4 982 ((unsigned)(scsi_bufflen(cp) - resid) <
0da69df1
AV		 983 cp->underflow)) {
984 qla_printk(KERN_INFO, ha,
385d70b4
FT		 985 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
986 "detected (%x of %x bytes)...returning "
987 "error status.\n", ha->host_no,
988 cp->device->channel, cp->device->id,
989 cp->device->lun, resid,
990 scsi_bufflen(cp));
0da69df1
AV		 991
992 cp->result = DID_ERROR << 16;
993 break;
994 }
1da177e4 995 }
1da177e4
LT		 996 cp->result = DID_OK << 16 | lscsi_status;
997
df7baa50
AV		 998 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
999 DEBUG2(printk(KERN_INFO
1000 "scsi(%ld): QUEUE FULL status detected "
1001 "0x%x-0x%x.\n", ha->host_no, comp_status,
1002 scsi_status));
1003
1004 /* Adjust queue depth for all luns on the port. */
1005 fcport->last_queue_full = jiffies;
df7baa50
AV		 1006 starget_for_each_device(cp->device->sdev_target,
1007 fcport, qla2x00_adjust_sdev_qdepth_down);
df7baa50
AV		 1008 break;
1009 }
1da177e4
LT		 1010 if (lscsi_status != SS_CHECK_CONDITION)
1011 break;
1012
b80ca4f7 1013 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1da177e4
LT		 1014 if (!(scsi_status & SS_SENSE_LEN_VALID))
1015 break;
1016
4733fcb1 1017 qla2x00_handle_sense(sp, sense_data, sense_len);
1da177e4
LT		 1018 break;
1019
1020 case CS_DATA_UNDERRUN:
9a853f71 1021 resid = resid_len;
ed17c71b 1022 /* Use F/W calculated residual length. */
6acf8190
AV		 1023 if (IS_FWI2_CAPABLE(ha)) {
1024 if (scsi_status & SS_RESIDUAL_UNDER &&
1025 resid != fw_resid_len) {
1026 scsi_status &= ~SS_RESIDUAL_UNDER;
1027 lscsi_status = 0;
1028 }
ed17c71b 1029 resid = fw_resid_len;
6acf8190 1030 }
ed17c71b 1031
1da177e4 1032 if (scsi_status & SS_RESIDUAL_UNDER) {
385d70b4 1033 scsi_set_resid(cp, resid);
1da177e4 1034 CMD_RESID_LEN(cp) = resid;
e038a1be 1035 } else {
1036 DEBUG2(printk(KERN_INFO
1037 "scsi(%ld:%d:%d) UNDERRUN status detected "
ed17c71b
RA		 1038 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1039 "os_underflow=0x%x\n", ha->host_no,
1040 cp->device->id, cp->device->lun, comp_status,
1041 scsi_status, resid_len, resid, cp->cmnd[0],
1042 cp->underflow));
e038a1be 1043
1da177e4
LT		 1044 }
1045
1046 /*
fa2a1ce5 1047 * Check to see if SCSI Status is non zero. If so report SCSI
1da177e4
LT		 1048 * Status.
1049 */
1050 if (lscsi_status != 0) {
1da177e4
LT		 1051 cp->result = DID_OK << 16 | lscsi_status;
1052
ffec28a3
AV		 1053 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1054 DEBUG2(printk(KERN_INFO
1055 "scsi(%ld): QUEUE FULL status detected "
1056 "0x%x-0x%x.\n", ha->host_no, comp_status,
1057 scsi_status));
1058
1059 /*
1060 * Adjust queue depth for all luns on the
1061 * port.
1062 */
1063 fcport->last_queue_full = jiffies;
1064 starget_for_each_device(
1065 cp->device->sdev_target, fcport,
1066 qla2x00_adjust_sdev_qdepth_down);
1067 break;
1068 }
1da177e4
LT		 1069 if (lscsi_status != SS_CHECK_CONDITION)
1070 break;
1071
b80ca4f7 1072 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1da177e4
LT		 1073 if (!(scsi_status & SS_SENSE_LEN_VALID))
1074 break;
1075
4733fcb1 1076 qla2x00_handle_sense(sp, sense_data, sense_len);
9a853f71 1077
8084fe16
SS		 1078 /*
1079 * In case of a Underrun condition, set both the lscsi
1080 * status and the completion status to appropriate
1081 * values.
1082 */
1083 if (resid &&
4b39c1d9 1084 ((unsigned)(scsi_bufflen(cp) - resid) <
8084fe16
SS		 1085 cp->underflow)) {
1086 DEBUG2(qla_printk(KERN_INFO, ha,
1087 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1088 "detected (%x of %x bytes)...returning "
1089 "error status.\n", ha->host_no,
1090 cp->device->channel, cp->device->id,
1091 cp->device->lun, resid,
4b39c1d9 1092 scsi_bufflen(cp)));
8084fe16
SS		 1093
1094 cp->result = DID_ERROR << 16 | lscsi_status;
1095 }
1da177e4
LT		 1096 } else {
1097 /*
1098 * If RISC reports underrun and target does not report
1099 * it then we must have a lost frame, so tell upper
1100 * layer to retry it by reporting a bus busy.
1101 */
1102 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1103 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
385d70b4
FT		 1104 "frame(s) detected (%x of %x bytes)..."
1105 "retrying command.\n", ha->host_no,
1106 cp->device->channel, cp->device->id,
1107 cp->device->lun, resid,
1108 scsi_bufflen(cp)));
1da177e4
LT		 1109
1110 cp->result = DID_BUS_BUSY << 16;
1da177e4
LT		 1111 break;
1112 }
1113
1114 /* Handle mid-layer underflow */
385d70b4 1115 if ((unsigned)(scsi_bufflen(cp) - resid) <
1da177e4
LT		 1116 cp->underflow) {
1117 qla_printk(KERN_INFO, ha,
385d70b4
FT		 1118 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1119 "detected (%x of %x bytes)...returning "
1120 "error status.\n", ha->host_no,
1121 cp->device->channel, cp->device->id,
1122 cp->device->lun, resid,
1123 scsi_bufflen(cp));
1da177e4
LT		 1124
1125 cp->result = DID_ERROR << 16;
1126 break;
1127 }
1128
1129 /* Everybody online, looking good... */
1130 cp->result = DID_OK << 16;
1131 }
1132 break;
1133
1134 case CS_DATA_OVERRUN:
1135 DEBUG2(printk(KERN_INFO
1136 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
9a853f71
AV		 1137 ha->host_no, cp->device->id, cp->device->lun, comp_status,
1138 scsi_status));
1da177e4
LT		 1139 DEBUG2(printk(KERN_INFO
1140 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1141 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1142 cp->cmnd[4], cp->cmnd[5]));
1143 DEBUG2(printk(KERN_INFO
1144 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1145 "status!\n",
385d70b4 1146 cp->serial_number, scsi_bufflen(cp), resid_len));
1da177e4
LT		 1147
1148 cp->result = DID_ERROR << 16;
1149 break;
1150
1151 case CS_PORT_LOGGED_OUT:
1152 case CS_PORT_CONFIG_CHG:
1153 case CS_PORT_BUSY:
1154 case CS_INCOMPLETE:
1155 case CS_PORT_UNAVAILABLE:
1156 /*
1157 * If the port is in Target Down state, return all IOs for this
1158 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1159 * retry_queue.
1160 */
1da177e4
LT		 1161 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1162 "pid=%ld, compl status=0x%x, port state=0x%x\n",
9a853f71
AV		 1163 ha->host_no, cp->device->id, cp->device->lun,
1164 cp->serial_number, comp_status,
1da177e4
LT		 1165 atomic_read(&fcport->state)));
1166
f4f051eb 1167 cp->result = DID_BUS_BUSY << 16;
1da177e4 1168 if (atomic_read(&fcport->state) == FCS_ONLINE) {
d97994dc 1169 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4 1170 }
1da177e4
LT		 1171 break;
1172
1173 case CS_RESET:
1174 DEBUG2(printk(KERN_INFO
1175 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1176 ha->host_no, comp_status, scsi_status));
1177
f4f051eb 1178 cp->result = DID_RESET << 16;
1da177e4
LT		 1179 break;
1180
1181 case CS_ABORTED:
fa2a1ce5 1182 /*
1da177e4
LT		 1183 * hv2.19.12 - DID_ABORT does not retry the request if we
1184 * aborted this request then abort otherwise it must be a
1185 * reset.
1186 */
1187 DEBUG2(printk(KERN_INFO
1188 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1189 ha->host_no, comp_status, scsi_status));
1190
1191 cp->result = DID_RESET << 16;
1192 break;
1193
1194 case CS_TIMEOUT:
9a853f71
AV		 1195 cp->result = DID_BUS_BUSY << 16;
1196
e428924c 1197 if (IS_FWI2_CAPABLE(ha)) {
9a853f71
AV		 1198 DEBUG2(printk(KERN_INFO
1199 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1200 "0x%x-0x%x\n", ha->host_no, cp->device->channel,
1201 cp->device->id, cp->device->lun, comp_status,
1202 scsi_status));
1203 break;
1204 }
1da177e4
LT		 1205 DEBUG2(printk(KERN_INFO
1206 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
9a853f71
AV		 1207 "sflags=%x.\n", ha->host_no, cp->device->channel,
1208 cp->device->id, cp->device->lun, comp_status, scsi_status,
1209 le16_to_cpu(sts->status_flags)));
1da177e4 1210
9a853f71
AV		 1211 /* Check to see if logout occurred. */
1212 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
d97994dc 1213 qla2x00_mark_device_lost(ha, fcport, 1, 1);
1da177e4
LT		 1214 break;
1215
1da177e4
LT		 1216 default:
1217 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
9a853f71 1218 "0x%x-0x%x.\n", ha->host_no, comp_status, scsi_status));
1da177e4
LT		 1219 qla_printk(KERN_INFO, ha,
1220 "Unknown status detected 0x%x-0x%x.\n",
1221 comp_status, scsi_status);
1222
1223 cp->result = DID_ERROR << 16;
1224 break;
1225 }
1226
1227 /* Place command on done queue. */
1228 if (ha->status_srb == NULL)
f4f051eb 1229 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1230}
1231
1232/**
1233 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1234 * @ha: SCSI driver HA context
1235 * @pkt: Entry pointer
1236 *
1237 * Extended sense data.
1238 */
1239static void
1240qla2x00_status_cont_entry(scsi_qla_host_t *ha, sts_cont_entry_t *pkt)
1241{
1242 uint8_t sense_sz = 0;
1243 srb_t *sp = ha->status_srb;
1244 struct scsi_cmnd *cp;
1245
1246 if (sp != NULL && sp->request_sense_length != 0) {
1247 cp = sp->cmd;
1248 if (cp == NULL) {
1249 DEBUG2(printk("%s(): Cmd already returned back to OS "
75bc4190 1250 "sp=%p.\n", __func__, sp));
1da177e4
LT		 1251 qla_printk(KERN_INFO, ha,
1252 "cmd is NULL: already returned to OS (sp=%p)\n",
fa2a1ce5 1253 sp);
1da177e4
LT		 1254
1255 ha->status_srb = NULL;
1256 return;
1257 }
1258
1259 if (sp->request_sense_length > sizeof(pkt->data)) {
1260 sense_sz = sizeof(pkt->data);
1261 } else {
1262 sense_sz = sp->request_sense_length;
1263 }
1264
1265 /* Move sense data. */
e428924c 1266 if (IS_FWI2_CAPABLE(ha))
9a853f71 1267 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1da177e4
LT		 1268 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1269 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1270
1271 sp->request_sense_ptr += sense_sz;
1272 sp->request_sense_length -= sense_sz;
1273
1274 /* Place command on done queue. */
1275 if (sp->request_sense_length == 0) {
1da177e4 1276 ha->status_srb = NULL;
f4f051eb 1277 qla2x00_sp_compl(ha, sp);
1da177e4
LT		 1278 }
1279 }
1280}
1281
1282/**
1283 * qla2x00_error_entry() - Process an error entry.
1284 * @ha: SCSI driver HA context
1285 * @pkt: Entry pointer
1286 */
1287static void
9a853f71 1288qla2x00_error_entry(scsi_qla_host_t *ha, sts_entry_t *pkt)
1da177e4
LT		 1289{
1290 srb_t *sp;
1291
1292#if defined(QL_DEBUG_LEVEL_2)
1293 if (pkt->entry_status & RF_INV_E_ORDER)
1294 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1295 else if (pkt->entry_status & RF_INV_E_COUNT)
1296 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1297 else if (pkt->entry_status & RF_INV_E_PARAM)
fa2a1ce5 1298 qla_printk(KERN_ERR, ha,
1da177e4
LT		 1299 "%s: Invalid Entry Parameter\n", __func__);
1300 else if (pkt->entry_status & RF_INV_E_TYPE)
1301 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1302 else if (pkt->entry_status & RF_BUSY)
1303 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1304 else
1305 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1306#endif
1307
1308 /* Validate handle. */
1309 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1310 sp = ha->outstanding_cmds[pkt->handle];
1311 else
1312 sp = NULL;
1313
1314 if (sp) {
1315 /* Free outstanding command slot. */
1316 ha->outstanding_cmds[pkt->handle] = NULL;
354d6b21 1317
1da177e4
LT		 1318 /* Bad payload or header */
1319 if (pkt->entry_status &
1320 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1321 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1322 sp->cmd->result = DID_ERROR << 16;
1323 } else if (pkt->entry_status & RF_BUSY) {
1324 sp->cmd->result = DID_BUS_BUSY << 16;
1325 } else {
1326 sp->cmd->result = DID_ERROR << 16;
1327 }
f4f051eb 1328 qla2x00_sp_compl(ha, sp);
1da177e4 1329
9a853f71
AV		 1330 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1331 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1da177e4
LT		 1332 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1333 ha->host_no));
1334 qla_printk(KERN_WARNING, ha,
1335 "Error entry - invalid handle\n");
1336
1337 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
39a11240 1338 qla2xxx_wake_dpc(ha);
1da177e4
LT		 1339 }
1340}
1341
1342/**
1343 * qla2x00_ms_entry() - Process a Management Server entry.
1344 * @ha: SCSI driver HA context
1345 * @index: Response queue out pointer
1346 */
1347static void
9a853f71 1348qla2x00_ms_entry(scsi_qla_host_t *ha, ms_iocb_entry_t *pkt)
1da177e4
LT		 1349{
1350 srb_t *sp;
1351
1352 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1353 __func__, ha->host_no, pkt, pkt->handle1));
1354
1355 /* Validate handle. */
1356 if (pkt->handle1 < MAX_OUTSTANDING_COMMANDS)
1357 sp = ha->outstanding_cmds[pkt->handle1];
1358 else
1359 sp = NULL;
1360
1361 if (sp == NULL) {
1362 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1363 ha->host_no));
1364 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle\n");
1365
1366 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1367 return;
1368 }
1369
1370 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->status);
1371 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1372
1373 /* Free outstanding command slot. */
1374 ha->outstanding_cmds[pkt->handle1] = NULL;
1375
f4f051eb 1376 qla2x00_sp_compl(ha, sp);
1da177e4 1377}
9a853f71
AV		 1378
1379
1380/**
1381 * qla24xx_mbx_completion() - Process mailbox command completions.
1382 * @ha: SCSI driver HA context
1383 * @mb0: Mailbox0 register
1384 */
1385static void
1386qla24xx_mbx_completion(scsi_qla_host_t *ha, uint16_t mb0)
1387{
1388 uint16_t cnt;
1389 uint16_t __iomem *wptr;
1390 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1391
1392 /* Load return mailbox registers. */
1393 ha->flags.mbox_int = 1;
1394 ha->mailbox_out[0] = mb0;
1395 wptr = (uint16_t __iomem *)&reg->mailbox1;
1396
1397 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1398 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1399 wptr++;
1400 }
1401
1402 if (ha->mcp) {
1403 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1404 __func__, ha->host_no, ha->mcp->mb[0]));
1405 } else {
1406 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1407 __func__, ha->host_no));
1408 }
1409}
1410
1411/**
1412 * qla24xx_process_response_queue() - Process response queue entries.
1413 * @ha: SCSI driver HA context
1414 */
1415void
1416qla24xx_process_response_queue(struct scsi_qla_host *ha)
1417{
1418 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1419 struct sts_entry_24xx *pkt;
1420
1421 if (!ha->flags.online)
1422 return;
1423
1424 while (ha->response_ring_ptr->signature != RESPONSE_PROCESSED) {
1425 pkt = (struct sts_entry_24xx *)ha->response_ring_ptr;
1426
1427 ha->rsp_ring_index++;
1428 if (ha->rsp_ring_index == ha->response_q_length) {
1429 ha->rsp_ring_index = 0;
1430 ha->response_ring_ptr = ha->response_ring;
1431 } else {
1432 ha->response_ring_ptr++;
1433 }
1434
1435 if (pkt->entry_status != 0) {
1436 DEBUG3(printk(KERN_INFO
1437 "scsi(%ld): Process error entry.\n", ha->host_no));
1438
9a853f71
AV		 1439 qla2x00_error_entry(ha, (sts_entry_t *) pkt);
1440 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1441 wmb();
1442 continue;
1443 }
1444
1445 switch (pkt->entry_type) {
1446 case STATUS_TYPE:
1447 qla2x00_status_entry(ha, pkt);
1448 break;
1449 case STATUS_CONT_TYPE:
1450 qla2x00_status_cont_entry(ha, (sts_cont_entry_t *)pkt);
1451 break;
1452 case MS_IOCB_TYPE:
1453 qla24xx_ms_entry(ha, (struct ct_entry_24xx *)pkt);
1454 break;
2c3dfe3f
SJ		 1455 case VP_RPT_ID_IOCB_TYPE:
1456 qla24xx_report_id_acquisition(ha,
1457 (struct vp_rpt_id_entry_24xx *)pkt);
1458 break;
9a853f71
AV		 1459 default:
1460 /* Type Not Supported. */
1461 DEBUG4(printk(KERN_WARNING
1462 "scsi(%ld): Received unknown response pkt type %x "
1463 "entry status=%x.\n",
1464 ha->host_no, pkt->entry_type, pkt->entry_status));
1465 break;
1466 }
1467 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1468 wmb();
1469 }
1470
1471 /* Adjust ring index */
1472 WRT_REG_DWORD(&reg->rsp_q_out, ha->rsp_ring_index);
1473}
1474
05236a05
AV		 1475static void
1476qla2xxx_check_risc_status(scsi_qla_host_t *ha)
1477{
1478 int rval;
1479 uint32_t cnt;
1480 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1481
1482 if (!IS_QLA25XX(ha))
1483 return;
1484
1485 rval = QLA_SUCCESS;
1486 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1487 RD_REG_DWORD(&reg->iobase_addr);
1488 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1489 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1490 rval == QLA_SUCCESS; cnt--) {
1491 if (cnt) {
1492 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1493 udelay(10);
1494 } else
1495 rval = QLA_FUNCTION_TIMEOUT;
1496 }
1497 if (rval == QLA_SUCCESS)
1498 goto next_test;
1499
1500 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1501 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1502 rval == QLA_SUCCESS; cnt--) {
1503 if (cnt) {
1504 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1505 udelay(10);
1506 } else
1507 rval = QLA_FUNCTION_TIMEOUT;
1508 }
1509 if (rval != QLA_SUCCESS)
1510 goto done;
1511
1512next_test:
1513 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1514 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1515
1516done:
1517 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1518 RD_REG_DWORD(&reg->iobase_window);
1519}
1520
9a853f71
AV		 1521/**
1522 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1523 * @irq:
1524 * @dev_id: SCSI driver HA context
9a853f71
AV		 1525 *
1526 * Called by system whenever the host adapter generates an interrupt.
1527 *
1528 * Returns handled flag.
1529 */
1530irqreturn_t
7d12e780 1531qla24xx_intr_handler(int irq, void *dev_id)
9a853f71
AV		 1532{
1533 scsi_qla_host_t *ha;
1534 struct device_reg_24xx __iomem *reg;
1535 int status;
1536 unsigned long flags;
1537 unsigned long iter;
1538 uint32_t stat;
1539 uint32_t hccr;
1540 uint16_t mb[4];
1541
1542 ha = (scsi_qla_host_t *) dev_id;
1543 if (!ha) {
1544 printk(KERN_INFO
1545 "%s(): NULL host pointer\n", __func__);
1546 return IRQ_NONE;
1547 }
1548
1549 reg = &ha->iobase->isp24;
1550 status = 0;
1551
1552 spin_lock_irqsave(&ha->hardware_lock, flags);
1553 for (iter = 50; iter--; ) {
1554 stat = RD_REG_DWORD(&reg->host_status);
1555 if (stat & HSRX_RISC_PAUSED) {
14e660e6
SJ		 1556 if (pci_channel_offline(ha->pdev))
1557 break;
1558
9a853f71
AV		 1559 hccr = RD_REG_DWORD(&reg->hccr);
1560
1561 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1562 "Dumping firmware!\n", hccr);
05236a05
AV		 1563
1564 qla2xxx_check_risc_status(ha);
1565
fd34f556 1566 ha->isp_ops->fw_dump(ha, 1);
9a853f71
AV		 1567 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1568 break;
1569 } else if ((stat & HSRX_RISC_INT) == 0)
1570 break;
1571
1572 switch (stat & 0xff) {
1573 case 0x1:
1574 case 0x2:
1575 case 0x10:
1576 case 0x11:
1577 qla24xx_mbx_completion(ha, MSW(stat));
1578 status |= MBX_INTERRUPT;
1579
1580 break;
1581 case 0x12:
1582 mb[0] = MSW(stat);
1583 mb[1] = RD_REG_WORD(&reg->mailbox1);
1584 mb[2] = RD_REG_WORD(&reg->mailbox2);
1585 mb[3] = RD_REG_WORD(&reg->mailbox3);
1586 qla2x00_async_event(ha, mb);
1587 break;
1588 case 0x13:
1589 qla24xx_process_response_queue(ha);
1590 break;
1591 default:
1592 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1593 "(%d).\n",
1594 ha->host_no, stat & 0xff));
1595 break;
1596 }
1597 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1598 RD_REG_DWORD_RELAXED(&reg->hccr);
1599 }
1600 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1601
1602 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1603 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
9a853f71 1604 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 1605 complete(&ha->mbx_intr_comp);
9a853f71
AV		 1606 }
1607
1608 return IRQ_HANDLED;
1609}
1610
1611/**
1612 * qla24xx_ms_entry() - Process a Management Server entry.
1613 * @ha: SCSI driver HA context
1614 * @index: Response queue out pointer
1615 */
1616static void
1617qla24xx_ms_entry(scsi_qla_host_t *ha, struct ct_entry_24xx *pkt)
1618{
1619 srb_t *sp;
1620
1621 DEBUG3(printk("%s(%ld): pkt=%p pkthandle=%d.\n",
1622 __func__, ha->host_no, pkt, pkt->handle));
1623
744f11fd
AV		 1624 DEBUG9(printk("%s: ct pkt dump:\n", __func__));
1625 DEBUG9(qla2x00_dump_buffer((void *)pkt, sizeof(struct ct_entry_24xx)));
9a853f71
AV		 1626
1627 /* Validate handle. */
1628 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1629 sp = ha->outstanding_cmds[pkt->handle];
1630 else
1631 sp = NULL;
1632
1633 if (sp == NULL) {
1634 DEBUG2(printk("scsi(%ld): MS entry - invalid handle\n",
1635 ha->host_no));
1636 DEBUG10(printk("scsi(%ld): MS entry - invalid handle\n",
1637 ha->host_no));
1638 qla_printk(KERN_WARNING, ha, "MS entry - invalid handle %d\n",
1639 pkt->handle);
1640
1641 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1642 return;
1643 }
1644
1645 CMD_COMPL_STATUS(sp->cmd) = le16_to_cpu(pkt->comp_status);
1646 CMD_ENTRY_STATUS(sp->cmd) = pkt->entry_status;
1647
1648 /* Free outstanding command slot. */
1649 ha->outstanding_cmds[pkt->handle] = NULL;
1650
1651 qla2x00_sp_compl(ha, sp);
1652}
1653
a8488abe
AV		 1654static irqreturn_t
1655qla24xx_msix_rsp_q(int irq, void *dev_id)
1656{
1657 scsi_qla_host_t *ha;
1658 struct device_reg_24xx __iomem *reg;
1659 unsigned long flags;
1660
1661 ha = dev_id;
1662 reg = &ha->iobase->isp24;
1663
1664 spin_lock_irqsave(&ha->hardware_lock, flags);
1665
1666 qla24xx_process_response_queue(ha);
1667
1668 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
a8488abe
AV		 1669
1670 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1671
1672 return IRQ_HANDLED;
1673}
1674
1675static irqreturn_t
1676qla24xx_msix_default(int irq, void *dev_id)
1677{
1678 scsi_qla_host_t *ha;
1679 struct device_reg_24xx __iomem *reg;
1680 int status;
1681 unsigned long flags;
a8488abe
AV		 1682 uint32_t stat;
1683 uint32_t hccr;
1684 uint16_t mb[4];
1685
1686 ha = dev_id;
1687 reg = &ha->iobase->isp24;
1688 status = 0;
1689
1690 spin_lock_irqsave(&ha->hardware_lock, flags);
87f27015 1691 do {
a8488abe
AV		 1692 stat = RD_REG_DWORD(&reg->host_status);
1693 if (stat & HSRX_RISC_PAUSED) {
14e660e6
SJ		 1694 if (pci_channel_offline(ha->pdev))
1695 break;
1696
a8488abe
AV		 1697 hccr = RD_REG_DWORD(&reg->hccr);
1698
1699 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1700 "Dumping firmware!\n", hccr);
05236a05
AV		 1701
1702 qla2xxx_check_risc_status(ha);
1703
fd34f556 1704 ha->isp_ops->fw_dump(ha, 1);
a8488abe
AV		 1705 set_bit(ISP_ABORT_NEEDED, &ha->dpc_flags);
1706 break;
1707 } else if ((stat & HSRX_RISC_INT) == 0)
1708 break;
1709
1710 switch (stat & 0xff) {
1711 case 0x1:
1712 case 0x2:
1713 case 0x10:
1714 case 0x11:
1715 qla24xx_mbx_completion(ha, MSW(stat));
1716 status |= MBX_INTERRUPT;
1717
1718 break;
1719 case 0x12:
1720 mb[0] = MSW(stat);
1721 mb[1] = RD_REG_WORD(&reg->mailbox1);
1722 mb[2] = RD_REG_WORD(&reg->mailbox2);
1723 mb[3] = RD_REG_WORD(&reg->mailbox3);
1724 qla2x00_async_event(ha, mb);
1725 break;
1726 case 0x13:
1727 qla24xx_process_response_queue(ha);
1728 break;
1729 default:
1730 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1731 "(%d).\n",
1732 ha->host_no, stat & 0xff));
1733 break;
1734 }
1735 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
87f27015 1736 } while (0);
a8488abe
AV		 1737 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1738
1739 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1740 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
a8488abe 1741 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
0b05a1f0 1742 complete(&ha->mbx_intr_comp);
a8488abe
AV		 1743 }
1744
1745 return IRQ_HANDLED;
1746}
1747
1748/* Interrupt handling helpers. */
1749
1750struct qla_init_msix_entry {
1751 uint16_t entry;
1752 uint16_t index;
1753 const char *name;
476834c2 1754 irq_handler_t handler;
a8488abe
AV		 1755};
1756
1757static struct qla_init_msix_entry imsix_entries[QLA_MSIX_ENTRIES] = {
1758 { QLA_MSIX_DEFAULT, QLA_MIDX_DEFAULT,
1759 "qla2xxx (default)", qla24xx_msix_default },
1760
1761 { QLA_MSIX_RSP_Q, QLA_MIDX_RSP_Q,
1762 "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1763};
1764
1765static void
1766qla24xx_disable_msix(scsi_qla_host_t *ha)
1767{
1768 int i;
1769 struct qla_msix_entry *qentry;
1770
1771 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1772 qentry = &ha->msix_entries[imsix_entries[i].index];
1773 if (qentry->have_irq)
1774 free_irq(qentry->msix_vector, ha);
1775 }
1776 pci_disable_msix(ha->pdev);
1777}
1778
1779static int
1780qla24xx_enable_msix(scsi_qla_host_t *ha)
1781{
1782 int i, ret;
1783 struct msix_entry entries[QLA_MSIX_ENTRIES];
1784 struct qla_msix_entry *qentry;
1785
1786 for (i = 0; i < QLA_MSIX_ENTRIES; i++)
1787 entries[i].entry = imsix_entries[i].entry;
1788
1789 ret = pci_enable_msix(ha->pdev, entries, ARRAY_SIZE(entries));
1790 if (ret) {
1791 qla_printk(KERN_WARNING, ha,
1792 "MSI-X: Failed to enable support -- %d/%d\n",
1793 QLA_MSIX_ENTRIES, ret);
1794 goto msix_out;
1795 }
1796 ha->flags.msix_enabled = 1;
1797
1798 for (i = 0; i < QLA_MSIX_ENTRIES; i++) {
1799 qentry = &ha->msix_entries[imsix_entries[i].index];
1800 qentry->msix_vector = entries[i].vector;
1801 qentry->msix_entry = entries[i].entry;
1802 qentry->have_irq = 0;
1803 ret = request_irq(qentry->msix_vector,
1804 imsix_entries[i].handler, 0, imsix_entries[i].name, ha);
1805 if (ret) {
1806 qla_printk(KERN_WARNING, ha,
1807 "MSI-X: Unable to register handler -- %x/%d.\n",
1808 imsix_entries[i].index, ret);
1809 qla24xx_disable_msix(ha);
1810 goto msix_out;
1811 }
1812 qentry->have_irq = 1;
1813 }
1814
1815msix_out:
1816 return ret;
1817}
1818
1819int
1820qla2x00_request_irqs(scsi_qla_host_t *ha)
1821{
1822 int ret;
963b0fdd
AV		 1823 device_reg_t __iomem *reg = ha->iobase;
1824 unsigned long flags;
a8488abe
AV		 1825
1826 /* If possible, enable MSI-X. */
c3a2f0df 1827 if (!IS_QLA2432(ha) && !IS_QLA2532(ha))
a8488abe
AV		 1828 goto skip_msix;
1829
c3a2f0df
AV		 1830 if (IS_QLA2432(ha) && (ha->chip_revision < QLA_MSIX_CHIP_REV_24XX ||
1831 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
a8488abe
AV		 1832 DEBUG2(qla_printk(KERN_WARNING, ha,
1833 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1834 ha->chip_revision, ha->fw_attributes));
1835
1836 goto skip_msix;
1837 }
1838
da7429f9
AV		 1839 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
1840 (ha->pdev->subsystem_device == 0x7040 ||
1841 ha->pdev->subsystem_device == 0x7041 ||
1842 ha->pdev->subsystem_device == 0x1705)) {
1843 DEBUG2(qla_printk(KERN_WARNING, ha,
1844 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
1845 ha->pdev->subsystem_vendor,
1846 ha->pdev->subsystem_device));
1847
1848 goto skip_msi;
1849 }
1850
a8488abe
AV		 1851 ret = qla24xx_enable_msix(ha);
1852 if (!ret) {
1853 DEBUG2(qla_printk(KERN_INFO, ha,
1854 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
1855 ha->fw_attributes));
963b0fdd 1856 goto clear_risc_ints;
a8488abe
AV		 1857 }
1858 qla_printk(KERN_WARNING, ha,
1859 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
1860skip_msix:
cbedb601 1861
c3a2f0df 1862 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha))
cbedb601
AV		 1863 goto skip_msi;
1864
1865 ret = pci_enable_msi(ha->pdev);
1866 if (!ret) {
1867 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
1868 ha->flags.msi_enabled = 1;
1869 }
1870skip_msi:
1871
fd34f556 1872 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
a8488abe 1873 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, ha);
963b0fdd 1874 if (ret) {
a8488abe
AV		 1875 qla_printk(KERN_WARNING, ha,
1876 "Failed to reserve interrupt %d already in use.\n",
1877 ha->pdev->irq);
963b0fdd
AV		 1878 goto fail;
1879 }
1880 ha->flags.inta_enabled = 1;
1881 ha->host->irq = ha->pdev->irq;
1882clear_risc_ints:
1883
1884 ha->isp_ops->disable_intrs(ha);
1885 spin_lock_irqsave(&ha->hardware_lock, flags);
1886 if (IS_FWI2_CAPABLE(ha)) {
1887 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1888 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1889 } else {
1890 WRT_REG_WORD(&reg->isp.semaphore, 0);
1891 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1892 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
a8488abe 1893 }
963b0fdd
AV		 1894 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1895 ha->isp_ops->enable_intrs(ha);
a8488abe 1896
963b0fdd 1897fail:
a8488abe
AV		 1898 return ret;
1899}
1900
1901void
1902qla2x00_free_irqs(scsi_qla_host_t *ha)
1903{
1904
1905 if (ha->flags.msix_enabled)
1906 qla24xx_disable_msix(ha);
cbedb601 1907 else if (ha->flags.inta_enabled) {
a8488abe 1908 free_irq(ha->host->irq, ha);
cbedb601
AV		 1909 pci_disable_msi(ha->pdev);
1910 }
a8488abe 1911}
Linux 6.x block layer and io_uring tree(s)