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[SCSI] qla2xxx: Don't pollute kernel logs with ZIO/RIO status messages.
[linux-2.6/kvm.git] / drivers / scsi / qla2xxx / qla_isr.c
blob5ff6f9453c0fa5636f6a9d9c8662381a0a67d34a
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2008 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8
9 #include <linux/delay.h>
10 #include <scsi/scsi_tcq.h>
11
12 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
13 static void qla2x00_process_completed_request(struct scsi_qla_host *,
14 struct req_que *, uint32_t);
15 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
16 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
17 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
18 sts_entry_t *);
19 static struct scsi_qla_host *qla2x00_get_rsp_host(struct rsp_que *);
20
21 /**
22 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
23 * @irq:
24 * @dev_id: SCSI driver HA context
25 *
26 * Called by system whenever the host adapter generates an interrupt.
27 *
28 * Returns handled flag.
29 */
30 irqreturn_t
31 qla2100_intr_handler(int irq, void *dev_id)
32 {
33 scsi_qla_host_t *vha;
34 struct qla_hw_data *ha;
35 struct device_reg_2xxx __iomem *reg;
36 int status;
37 unsigned long iter;
38 uint16_t hccr;
39 uint16_t mb[4];
40 struct rsp_que *rsp;
41
42 rsp = (struct rsp_que *) dev_id;
43 if (!rsp) {
44 printk(KERN_INFO
45 "%s(): NULL response queue pointer\n", __func__);
46 return (IRQ_NONE);
47 }
48
49 ha = rsp->hw;
50 reg = &ha->iobase->isp;
51 status = 0;
52
53 spin_lock(&ha->hardware_lock);
54 vha = qla2x00_get_rsp_host(rsp);
55 for (iter = 50; iter--; ) {
56 hccr = RD_REG_WORD(&reg->hccr);
57 if (hccr & HCCR_RISC_PAUSE) {
58 if (pci_channel_offline(ha->pdev))
59 break;
60
61 /*
62 * Issue a "HARD" reset in order for the RISC interrupt
63 * bit to be cleared. Schedule a big hammmer to get
64 * out of the RISC PAUSED state.
65 */
66 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
67 RD_REG_WORD(&reg->hccr);
68
69 ha->isp_ops->fw_dump(vha, 1);
70 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
71 break;
72 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
73 break;
74
75 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
76 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
77 RD_REG_WORD(&reg->hccr);
78
79 /* Get mailbox data. */
80 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
81 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
82 qla2x00_mbx_completion(vha, mb[0]);
83 status |= MBX_INTERRUPT;
84 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
85 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
86 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
87 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
88 qla2x00_async_event(vha, rsp, mb);
89 } else {
90 /*EMPTY*/
91 DEBUG2(printk("scsi(%ld): Unrecognized "
92 "interrupt type (%d).\n",
93 vha->host_no, mb[0]));
94 }
95 /* Release mailbox registers. */
96 WRT_REG_WORD(&reg->semaphore, 0);
97 RD_REG_WORD(&reg->semaphore);
98 } else {
99 qla2x00_process_response_queue(rsp);
100
101 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
102 RD_REG_WORD(&reg->hccr);
103 }
104 }
105 spin_unlock(&ha->hardware_lock);
106
107 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
108 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
109 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
110 complete(&ha->mbx_intr_comp);
111 }
112
113 return (IRQ_HANDLED);
114 }
115
116 /**
117 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
118 * @irq:
119 * @dev_id: SCSI driver HA context
120 *
121 * Called by system whenever the host adapter generates an interrupt.
122 *
123 * Returns handled flag.
124 */
125 irqreturn_t
126 qla2300_intr_handler(int irq, void *dev_id)
127 {
128 scsi_qla_host_t *vha;
129 struct device_reg_2xxx __iomem *reg;
130 int status;
131 unsigned long iter;
132 uint32_t stat;
133 uint16_t hccr;
134 uint16_t mb[4];
135 struct rsp_que *rsp;
136 struct qla_hw_data *ha;
137
138 rsp = (struct rsp_que *) dev_id;
139 if (!rsp) {
140 printk(KERN_INFO
141 "%s(): NULL response queue pointer\n", __func__);
142 return (IRQ_NONE);
143 }
144
145 ha = rsp->hw;
146 reg = &ha->iobase->isp;
147 status = 0;
148
149 spin_lock(&ha->hardware_lock);
150 vha = qla2x00_get_rsp_host(rsp);
151 for (iter = 50; iter--; ) {
152 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
153 if (stat & HSR_RISC_PAUSED) {
154 if (pci_channel_offline(ha->pdev))
155 break;
156
157 hccr = RD_REG_WORD(&reg->hccr);
158 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
159 qla_printk(KERN_INFO, ha, "Parity error -- "
160 "HCCR=%x, Dumping firmware!\n", hccr);
161 else
162 qla_printk(KERN_INFO, ha, "RISC paused -- "
163 "HCCR=%x, Dumping firmware!\n", hccr);
164
165 /*
166 * Issue a "HARD" reset in order for the RISC
167 * interrupt bit to be cleared. Schedule a big
168 * hammmer to get out of the RISC PAUSED state.
169 */
170 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
171 RD_REG_WORD(&reg->hccr);
172
173 ha->isp_ops->fw_dump(vha, 1);
174 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
175 break;
176 } else if ((stat & HSR_RISC_INT) == 0)
177 break;
178
179 switch (stat & 0xff) {
180 case 0x1:
181 case 0x2:
182 case 0x10:
183 case 0x11:
184 qla2x00_mbx_completion(vha, MSW(stat));
185 status |= MBX_INTERRUPT;
186
187 /* Release mailbox registers. */
188 WRT_REG_WORD(&reg->semaphore, 0);
189 break;
190 case 0x12:
191 mb[0] = MSW(stat);
192 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
193 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
194 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
195 qla2x00_async_event(vha, rsp, mb);
196 break;
197 case 0x13:
198 qla2x00_process_response_queue(rsp);
199 break;
200 case 0x15:
201 mb[0] = MBA_CMPLT_1_16BIT;
202 mb[1] = MSW(stat);
203 qla2x00_async_event(vha, rsp, mb);
204 break;
205 case 0x16:
206 mb[0] = MBA_SCSI_COMPLETION;
207 mb[1] = MSW(stat);
208 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
209 qla2x00_async_event(vha, rsp, mb);
210 break;
211 default:
212 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
213 "(%d).\n",
214 vha->host_no, stat & 0xff));
215 break;
216 }
217 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
218 RD_REG_WORD_RELAXED(&reg->hccr);
219 }
220 spin_unlock(&ha->hardware_lock);
221
222 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
223 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
224 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
225 complete(&ha->mbx_intr_comp);
226 }
227
228 return (IRQ_HANDLED);
229 }
230
231 /**
232 * qla2x00_mbx_completion() - Process mailbox command completions.
233 * @ha: SCSI driver HA context
234 * @mb0: Mailbox0 register
235 */
236 static void
237 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
238 {
239 uint16_t cnt;
240 uint16_t __iomem *wptr;
241 struct qla_hw_data *ha = vha->hw;
242 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
243
244 /* Load return mailbox registers. */
245 ha->flags.mbox_int = 1;
246 ha->mailbox_out[0] = mb0;
247 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
248
249 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
250 if (IS_QLA2200(ha) && cnt == 8)
251 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
252 if (cnt == 4 || cnt == 5)
253 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
254 else
255 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
256
257 wptr++;
258 }
259
260 if (ha->mcp) {
261 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
262 __func__, vha->host_no, ha->mcp->mb[0]));
263 } else {
264 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
265 __func__, vha->host_no));
266 }
267 }
268
269 /**
270 * qla2x00_async_event() - Process aynchronous events.
271 * @ha: SCSI driver HA context
272 * @mb: Mailbox registers (0 - 3)
273 */
274 void
275 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
276 {
277 #define LS_UNKNOWN 2
278 static char *link_speeds[5] = { "1", "2", "?", "4", "8" };
279 char *link_speed;
280 uint16_t handle_cnt;
281 uint16_t cnt;
282 uint32_t handles[5];
283 struct qla_hw_data *ha = vha->hw;
284 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
285 uint32_t rscn_entry, host_pid;
286 uint8_t rscn_queue_index;
287 unsigned long flags;
288
289 /* Setup to process RIO completion. */
290 handle_cnt = 0;
291 switch (mb[0]) {
292 case MBA_SCSI_COMPLETION:
293 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
294 handle_cnt = 1;
295 break;
296 case MBA_CMPLT_1_16BIT:
297 handles[0] = mb[1];
298 handle_cnt = 1;
299 mb[0] = MBA_SCSI_COMPLETION;
300 break;
301 case MBA_CMPLT_2_16BIT:
302 handles[0] = mb[1];
303 handles[1] = mb[2];
304 handle_cnt = 2;
305 mb[0] = MBA_SCSI_COMPLETION;
306 break;
307 case MBA_CMPLT_3_16BIT:
308 handles[0] = mb[1];
309 handles[1] = mb[2];
310 handles[2] = mb[3];
311 handle_cnt = 3;
312 mb[0] = MBA_SCSI_COMPLETION;
313 break;
314 case MBA_CMPLT_4_16BIT:
315 handles[0] = mb[1];
316 handles[1] = mb[2];
317 handles[2] = mb[3];
318 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
319 handle_cnt = 4;
320 mb[0] = MBA_SCSI_COMPLETION;
321 break;
322 case MBA_CMPLT_5_16BIT:
323 handles[0] = mb[1];
324 handles[1] = mb[2];
325 handles[2] = mb[3];
326 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
327 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
328 handle_cnt = 5;
329 mb[0] = MBA_SCSI_COMPLETION;
330 break;
331 case MBA_CMPLT_2_32BIT:
332 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
333 handles[1] = le32_to_cpu(
334 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
335 RD_MAILBOX_REG(ha, reg, 6));
336 handle_cnt = 2;
337 mb[0] = MBA_SCSI_COMPLETION;
338 break;
339 default:
340 break;
341 }
342
343 switch (mb[0]) {
344 case MBA_SCSI_COMPLETION: /* Fast Post */
345 if (!vha->flags.online)
346 break;
347
348 for (cnt = 0; cnt < handle_cnt; cnt++)
349 qla2x00_process_completed_request(vha, rsp->req,
350 handles[cnt]);
351 break;
352
353 case MBA_RESET: /* Reset */
354 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
355 vha->host_no));
356
357 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
358 break;
359
360 case MBA_SYSTEM_ERR: /* System Error */
361 qla_printk(KERN_INFO, ha,
362 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
363 mb[1], mb[2], mb[3]);
364
365 ha->isp_ops->fw_dump(vha, 1);
366
367 if (IS_FWI2_CAPABLE(ha)) {
368 if (mb[1] == 0 && mb[2] == 0) {
369 qla_printk(KERN_ERR, ha,
370 "Unrecoverable Hardware Error: adapter "
371 "marked OFFLINE!\n");
372 vha->flags.online = 0;
373 } else
374 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
375 } else if (mb[1] == 0) {
376 qla_printk(KERN_INFO, ha,
377 "Unrecoverable Hardware Error: adapter marked "
378 "OFFLINE!\n");
379 vha->flags.online = 0;
380 } else
381 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
382 break;
383
384 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
385 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
386 vha->host_no));
387 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
388
389 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
390 break;
391
392 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
393 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
394 vha->host_no));
395 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
396
397 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
398 break;
399
400 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
401 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
402 vha->host_no));
403 break;
404
405 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
406 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
407 mb[1]));
408 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
409
410 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
411 atomic_set(&vha->loop_state, LOOP_DOWN);
412 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
413 qla2x00_mark_all_devices_lost(vha, 1);
414 }
415
416 if (vha->vp_idx) {
417 atomic_set(&vha->vp_state, VP_FAILED);
418 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
419 }
420
421 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
422 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
423
424 vha->flags.management_server_logged_in = 0;
425 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
426 break;
427
428 case MBA_LOOP_UP: /* Loop Up Event */
429 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
430 link_speed = link_speeds[0];
431 ha->link_data_rate = PORT_SPEED_1GB;
432 } else {
433 link_speed = link_speeds[LS_UNKNOWN];
434 if (mb[1] < 5)
435 link_speed = link_speeds[mb[1]];
436 ha->link_data_rate = mb[1];
437 }
438
439 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
440 vha->host_no, link_speed));
441 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
442 link_speed);
443
444 vha->flags.management_server_logged_in = 0;
445 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
446 break;
447
448 case MBA_LOOP_DOWN: /* Loop Down Event */
449 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
450 "(%x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3]));
451 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
452 mb[1], mb[2], mb[3]);
453
454 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
455 atomic_set(&vha->loop_state, LOOP_DOWN);
456 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
457 vha->device_flags |= DFLG_NO_CABLE;
458 qla2x00_mark_all_devices_lost(vha, 1);
459 }
460
461 if (vha->vp_idx) {
462 atomic_set(&vha->vp_state, VP_FAILED);
463 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
464 }
465
466 vha->flags.management_server_logged_in = 0;
467 ha->link_data_rate = PORT_SPEED_UNKNOWN;
468 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
469 break;
470
471 case MBA_LIP_RESET: /* LIP reset occurred */
472 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
473 vha->host_no, mb[1]));
474 qla_printk(KERN_INFO, ha,
475 "LIP reset occurred (%x).\n", mb[1]);
476
477 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
478 atomic_set(&vha->loop_state, LOOP_DOWN);
479 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
480 qla2x00_mark_all_devices_lost(vha, 1);
481 }
482
483 if (vha->vp_idx) {
484 atomic_set(&vha->vp_state, VP_FAILED);
485 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
486 }
487
488 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
489
490 ha->operating_mode = LOOP;
491 vha->flags.management_server_logged_in = 0;
492 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
493 break;
494
495 case MBA_POINT_TO_POINT: /* Point-to-Point */
496 if (IS_QLA2100(ha))
497 break;
498
499 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE received.\n",
500 vha->host_no));
501
502 /*
503 * Until there's a transition from loop down to loop up, treat
504 * this as loop down only.
505 */
506 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
507 atomic_set(&vha->loop_state, LOOP_DOWN);
508 if (!atomic_read(&vha->loop_down_timer))
509 atomic_set(&vha->loop_down_timer,
510 LOOP_DOWN_TIME);
511 qla2x00_mark_all_devices_lost(vha, 1);
512 }
513
514 if (vha->vp_idx) {
515 atomic_set(&vha->vp_state, VP_FAILED);
516 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
517 }
518
519 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
520 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
521
522 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
523 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
524
525 ha->flags.gpsc_supported = 1;
526 vha->flags.management_server_logged_in = 0;
527 break;
528
529 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
530 if (IS_QLA2100(ha))
531 break;
532
533 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
534 "received.\n",
535 vha->host_no));
536 qla_printk(KERN_INFO, ha,
537 "Configuration change detected: value=%x.\n", mb[1]);
538
539 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
540 atomic_set(&vha->loop_state, LOOP_DOWN);
541 if (!atomic_read(&vha->loop_down_timer))
542 atomic_set(&vha->loop_down_timer,
543 LOOP_DOWN_TIME);
544 qla2x00_mark_all_devices_lost(vha, 1);
545 }
546
547 if (vha->vp_idx) {
548 atomic_set(&vha->vp_state, VP_FAILED);
549 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
550 }
551
552 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
553 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
554 break;
555
556 case MBA_PORT_UPDATE: /* Port database update */
557 /* Only handle SCNs for our Vport index. */
558 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
559 break;
560
561 /*
562 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
563 * event etc. earlier indicating loop is down) then process
564 * it. Otherwise ignore it and Wait for RSCN to come in.
565 */
566 atomic_set(&vha->loop_down_timer, 0);
567 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
568 atomic_read(&vha->loop_state) != LOOP_DEAD) {
569 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
570 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
571 mb[2], mb[3]));
572 break;
573 }
574
575 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
576 vha->host_no));
577 DEBUG(printk(KERN_INFO
578 "scsi(%ld): Port database changed %04x %04x %04x.\n",
579 vha->host_no, mb[1], mb[2], mb[3]));
580
581 /*
582 * Mark all devices as missing so we will login again.
583 */
584 atomic_set(&vha->loop_state, LOOP_UP);
585
586 qla2x00_mark_all_devices_lost(vha, 1);
587
588 vha->flags.rscn_queue_overflow = 1;
589
590 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
591 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
592 break;
593
594 case MBA_RSCN_UPDATE: /* State Change Registration */
595 /* Check if the Vport has issued a SCR */
596 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
597 break;
598 /* Only handle SCNs for our Vport index. */
599 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
600 break;
601 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
602 vha->host_no));
603 DEBUG(printk(KERN_INFO
604 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
605 vha->host_no, mb[1], mb[2], mb[3]));
606
607 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
608 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
609 | vha->d_id.b.al_pa;
610 if (rscn_entry == host_pid) {
611 DEBUG(printk(KERN_INFO
612 "scsi(%ld): Ignoring RSCN update to local host "
613 "port ID (%06x)\n",
614 vha->host_no, host_pid));
615 break;
616 }
617
618 /* Ignore reserved bits from RSCN-payload. */
619 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
620 rscn_queue_index = vha->rscn_in_ptr + 1;
621 if (rscn_queue_index == MAX_RSCN_COUNT)
622 rscn_queue_index = 0;
623 if (rscn_queue_index != vha->rscn_out_ptr) {
624 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
625 vha->rscn_in_ptr = rscn_queue_index;
626 } else {
627 vha->flags.rscn_queue_overflow = 1;
628 }
629
630 atomic_set(&vha->loop_state, LOOP_UPDATE);
631 atomic_set(&vha->loop_down_timer, 0);
632 vha->flags.management_server_logged_in = 0;
633
634 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
635 set_bit(RSCN_UPDATE, &vha->dpc_flags);
636 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
637 break;
638
639 /* case MBA_RIO_RESPONSE: */
640 case MBA_ZIO_RESPONSE:
641 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
642 vha->host_no));
643
644 if (IS_FWI2_CAPABLE(ha))
645 qla24xx_process_response_queue(rsp);
646 else
647 qla2x00_process_response_queue(rsp);
648 break;
649
650 case MBA_DISCARD_RND_FRAME:
651 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
652 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
653 break;
654
655 case MBA_TRACE_NOTIFICATION:
656 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
657 vha->host_no, mb[1], mb[2]));
658 break;
659
660 case MBA_ISP84XX_ALERT:
661 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
662 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
663
664 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
665 switch (mb[1]) {
666 case A84_PANIC_RECOVERY:
667 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
668 "%04x %04x\n", mb[2], mb[3]);
669 break;
670 case A84_OP_LOGIN_COMPLETE:
671 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
672 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
673 "firmware version %x\n", ha->cs84xx->op_fw_version));
674 break;
675 case A84_DIAG_LOGIN_COMPLETE:
676 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
677 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
678 "diagnostic firmware version %x\n",
679 ha->cs84xx->diag_fw_version));
680 break;
681 case A84_GOLD_LOGIN_COMPLETE:
682 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
683 ha->cs84xx->fw_update = 1;
684 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
685 "firmware version %x\n",
686 ha->cs84xx->gold_fw_version));
687 break;
688 default:
689 qla_printk(KERN_ERR, ha,
690 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
691 mb[1], mb[2], mb[3]);
692 }
693 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
694 break;
695 }
696
697 if (!vha->vp_idx && ha->num_vhosts)
698 qla2x00_alert_all_vps(rsp, mb);
699 }
700
701 static void
702 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
703 {
704 fc_port_t *fcport = data;
705 struct scsi_qla_host *vha = fcport->vha;
706 struct qla_hw_data *ha = vha->hw;
707 struct req_que *req = NULL;
708
709 req = ha->req_q_map[vha->req_ques[0]];
710 if (!req)
711 return;
712 if (req->max_q_depth <= sdev->queue_depth)
713 return;
714
715 if (sdev->ordered_tags)
716 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
717 sdev->queue_depth + 1);
718 else
719 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
720 sdev->queue_depth + 1);
721
722 fcport->last_ramp_up = jiffies;
723
724 DEBUG2(qla_printk(KERN_INFO, ha,
725 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
726 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
727 sdev->queue_depth));
728 }
729
730 static void
731 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
732 {
733 fc_port_t *fcport = data;
734
735 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
736 return;
737
738 DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
739 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
740 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
741 sdev->queue_depth));
742 }
743
744 static inline void
745 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
746 srb_t *sp)
747 {
748 fc_port_t *fcport;
749 struct scsi_device *sdev;
750
751 sdev = sp->cmd->device;
752 if (sdev->queue_depth >= req->max_q_depth)
753 return;
754
755 fcport = sp->fcport;
756 if (time_before(jiffies,
757 fcport->last_ramp_up + ql2xqfullrampup * HZ))
758 return;
759 if (time_before(jiffies,
760 fcport->last_queue_full + ql2xqfullrampup * HZ))
761 return;
762
763 starget_for_each_device(sdev->sdev_target, fcport,
764 qla2x00_adjust_sdev_qdepth_up);
765 }
766
767 /**
768 * qla2x00_process_completed_request() - Process a Fast Post response.
769 * @ha: SCSI driver HA context
770 * @index: SRB index
771 */
772 static void
773 qla2x00_process_completed_request(struct scsi_qla_host *vha,
774 struct req_que *req, uint32_t index)
775 {
776 srb_t *sp;
777 struct qla_hw_data *ha = vha->hw;
778
779 /* Validate handle. */
780 if (index >= MAX_OUTSTANDING_COMMANDS) {
781 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
782 vha->host_no, index));
783 qla_printk(KERN_WARNING, ha,
784 "Invalid SCSI completion handle %d.\n", index);
785
786 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
787 return;
788 }
789
790 sp = req->outstanding_cmds[index];
791 if (sp) {
792 /* Free outstanding command slot. */
793 req->outstanding_cmds[index] = NULL;
794
795 CMD_COMPL_STATUS(sp->cmd) = 0L;
796 CMD_SCSI_STATUS(sp->cmd) = 0L;
797
798 /* Save ISP completion status */
799 sp->cmd->result = DID_OK << 16;
800
801 qla2x00_ramp_up_queue_depth(vha, req, sp);
802 qla2x00_sp_compl(ha, sp);
803 } else {
804 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
805 vha->host_no));
806 qla_printk(KERN_WARNING, ha,
807 "Invalid ISP SCSI completion handle\n");
808
809 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
810 }
811 }
812
813 /**
814 * qla2x00_process_response_queue() - Process response queue entries.
815 * @ha: SCSI driver HA context
816 */
817 void
818 qla2x00_process_response_queue(struct rsp_que *rsp)
819 {
820 struct scsi_qla_host *vha;
821 struct qla_hw_data *ha = rsp->hw;
822 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
823 sts_entry_t *pkt;
824 uint16_t handle_cnt;
825 uint16_t cnt;
826
827 vha = qla2x00_get_rsp_host(rsp);
828
829 if (!vha->flags.online)
830 return;
831
832 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
833 pkt = (sts_entry_t *)rsp->ring_ptr;
834
835 rsp->ring_index++;
836 if (rsp->ring_index == rsp->length) {
837 rsp->ring_index = 0;
838 rsp->ring_ptr = rsp->ring;
839 } else {
840 rsp->ring_ptr++;
841 }
842
843 if (pkt->entry_status != 0) {
844 DEBUG3(printk(KERN_INFO
845 "scsi(%ld): Process error entry.\n", vha->host_no));
846
847 qla2x00_error_entry(vha, rsp, pkt);
848 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
849 wmb();
850 continue;
851 }
852
853 switch (pkt->entry_type) {
854 case STATUS_TYPE:
855 qla2x00_status_entry(vha, rsp, pkt);
856 break;
857 case STATUS_TYPE_21:
858 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
859 for (cnt = 0; cnt < handle_cnt; cnt++) {
860 qla2x00_process_completed_request(vha, rsp->req,
861 ((sts21_entry_t *)pkt)->handle[cnt]);
862 }
863 break;
864 case STATUS_TYPE_22:
865 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
866 for (cnt = 0; cnt < handle_cnt; cnt++) {
867 qla2x00_process_completed_request(vha, rsp->req,
868 ((sts22_entry_t *)pkt)->handle[cnt]);
869 }
870 break;
871 case STATUS_CONT_TYPE:
872 qla2x00_status_cont_entry(vha, (sts_cont_entry_t *)pkt);
873 break;
874 default:
875 /* Type Not Supported. */
876 DEBUG4(printk(KERN_WARNING
877 "scsi(%ld): Received unknown response pkt type %x "
878 "entry status=%x.\n",
879 vha->host_no, pkt->entry_type, pkt->entry_status));
880 break;
881 }
882 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
883 wmb();
884 }
885
886 /* Adjust ring index */
887 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
888 }
889
890 static inline void
891 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
892 {
893 struct scsi_cmnd *cp = sp->cmd;
894
895 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
896 sense_len = SCSI_SENSE_BUFFERSIZE;
897
898 CMD_ACTUAL_SNSLEN(cp) = sense_len;
899 sp->request_sense_length = sense_len;
900 sp->request_sense_ptr = cp->sense_buffer;
901 if (sp->request_sense_length > 32)
902 sense_len = 32;
903
904 memcpy(cp->sense_buffer, sense_data, sense_len);
905
906 sp->request_sense_ptr += sense_len;
907 sp->request_sense_length -= sense_len;
908 if (sp->request_sense_length != 0)
909 sp->fcport->vha->status_srb = sp;
910
911 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
912 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
913 cp->device->channel, cp->device->id, cp->device->lun, cp,
914 cp->serial_number));
915 if (sense_len)
916 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
917 CMD_ACTUAL_SNSLEN(cp)));
918 }
919
920 /**
921 * qla2x00_status_entry() - Process a Status IOCB entry.
922 * @ha: SCSI driver HA context
923 * @pkt: Entry pointer
924 */
925 static void
926 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
927 {
928 srb_t *sp;
929 fc_port_t *fcport;
930 struct scsi_cmnd *cp;
931 sts_entry_t *sts;
932 struct sts_entry_24xx *sts24;
933 uint16_t comp_status;
934 uint16_t scsi_status;
935 uint8_t lscsi_status;
936 int32_t resid;
937 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
938 uint8_t *rsp_info, *sense_data;
939 struct qla_hw_data *ha = vha->hw;
940 struct req_que *req = rsp->req;
941
942 sts = (sts_entry_t *) pkt;
943 sts24 = (struct sts_entry_24xx *) pkt;
944 if (IS_FWI2_CAPABLE(ha)) {
945 comp_status = le16_to_cpu(sts24->comp_status);
946 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
947 } else {
948 comp_status = le16_to_cpu(sts->comp_status);
949 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
950 }
951
952 /* Fast path completion. */
953 if (comp_status == CS_COMPLETE && scsi_status == 0) {
954 qla2x00_process_completed_request(vha, req, sts->handle);
955
956 return;
957 }
958
959 /* Validate handle. */
960 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
961 sp = req->outstanding_cmds[sts->handle];
962 req->outstanding_cmds[sts->handle] = NULL;
963 } else
964 sp = NULL;
965
966 if (sp == NULL) {
967 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
968 vha->host_no));
969 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
970
971 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
972 qla2xxx_wake_dpc(vha);
973 return;
974 }
975 cp = sp->cmd;
976 if (cp == NULL) {
977 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
978 "pkt->handle=%d sp=%p.\n", vha->host_no, sts->handle, sp));
979 qla_printk(KERN_WARNING, ha,
980 "Command is NULL: already returned to OS (sp=%p)\n", sp);
981
982 return;
983 }
984
985 lscsi_status = scsi_status & STATUS_MASK;
986 CMD_ENTRY_STATUS(cp) = sts->entry_status;
987 CMD_COMPL_STATUS(cp) = comp_status;
988 CMD_SCSI_STATUS(cp) = scsi_status;
989
990 fcport = sp->fcport;
991
992 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
993 if (IS_FWI2_CAPABLE(ha)) {
994 sense_len = le32_to_cpu(sts24->sense_len);
995 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
996 resid_len = le32_to_cpu(sts24->rsp_residual_count);
997 fw_resid_len = le32_to_cpu(sts24->residual_len);
998 rsp_info = sts24->data;
999 sense_data = sts24->data;
1000 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1001 } else {
1002 sense_len = le16_to_cpu(sts->req_sense_length);
1003 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1004 resid_len = le32_to_cpu(sts->residual_length);
1005 rsp_info = sts->rsp_info;
1006 sense_data = sts->req_sense_data;
1007 }
1008
1009 /* Check for any FCP transport errors. */
1010 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1011 /* Sense data lies beyond any FCP RESPONSE data. */
1012 if (IS_FWI2_CAPABLE(ha))
1013 sense_data += rsp_info_len;
1014 if (rsp_info_len > 3 && rsp_info[3]) {
1015 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1016 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1017 "retrying command\n", vha->host_no,
1018 cp->device->channel, cp->device->id,
1019 cp->device->lun, rsp_info_len, rsp_info[0],
1020 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1021 rsp_info[5], rsp_info[6], rsp_info[7]));
1022
1023 cp->result = DID_BUS_BUSY << 16;
1024 qla2x00_sp_compl(ha, sp);
1025 return;
1026 }
1027 }
1028
1029 /* Check for overrun. */
1030 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1031 scsi_status & SS_RESIDUAL_OVER)
1032 comp_status = CS_DATA_OVERRUN;
1033
1034 /*
1035 * Based on Host and scsi status generate status code for Linux
1036 */
1037 switch (comp_status) {
1038 case CS_COMPLETE:
1039 case CS_QUEUE_FULL:
1040 if (scsi_status == 0) {
1041 cp->result = DID_OK << 16;
1042 break;
1043 }
1044 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1045 resid = resid_len;
1046 scsi_set_resid(cp, resid);
1047 CMD_RESID_LEN(cp) = resid;
1048
1049 if (!lscsi_status &&
1050 ((unsigned)(scsi_bufflen(cp) - resid) <
1051 cp->underflow)) {
1052 qla_printk(KERN_INFO, ha,
1053 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1054 "detected (%x of %x bytes)...returning "
1055 "error status.\n", vha->host_no,
1056 cp->device->channel, cp->device->id,
1057 cp->device->lun, resid,
1058 scsi_bufflen(cp));
1059
1060 cp->result = DID_ERROR << 16;
1061 break;
1062 }
1063 }
1064 cp->result = DID_OK << 16 | lscsi_status;
1065
1066 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1067 DEBUG2(printk(KERN_INFO
1068 "scsi(%ld): QUEUE FULL status detected "
1069 "0x%x-0x%x.\n", vha->host_no, comp_status,
1070 scsi_status));
1071
1072 /* Adjust queue depth for all luns on the port. */
1073 fcport->last_queue_full = jiffies;
1074 starget_for_each_device(cp->device->sdev_target,
1075 fcport, qla2x00_adjust_sdev_qdepth_down);
1076 break;
1077 }
1078 if (lscsi_status != SS_CHECK_CONDITION)
1079 break;
1080
1081 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1082 if (!(scsi_status & SS_SENSE_LEN_VALID))
1083 break;
1084
1085 qla2x00_handle_sense(sp, sense_data, sense_len);
1086 break;
1087
1088 case CS_DATA_UNDERRUN:
1089 resid = resid_len;
1090 /* Use F/W calculated residual length. */
1091 if (IS_FWI2_CAPABLE(ha)) {
1092 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1093 lscsi_status = 0;
1094 } else if (resid != fw_resid_len) {
1095 scsi_status &= ~SS_RESIDUAL_UNDER;
1096 lscsi_status = 0;
1097 }
1098 resid = fw_resid_len;
1099 }
1100
1101 if (scsi_status & SS_RESIDUAL_UNDER) {
1102 scsi_set_resid(cp, resid);
1103 CMD_RESID_LEN(cp) = resid;
1104 } else {
1105 DEBUG2(printk(KERN_INFO
1106 "scsi(%ld:%d:%d) UNDERRUN status detected "
1107 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1108 "os_underflow=0x%x\n", vha->host_no,
1109 cp->device->id, cp->device->lun, comp_status,
1110 scsi_status, resid_len, resid, cp->cmnd[0],
1111 cp->underflow));
1112
1113 }
1114
1115 /*
1116 * Check to see if SCSI Status is non zero. If so report SCSI
1117 * Status.
1118 */
1119 if (lscsi_status != 0) {
1120 cp->result = DID_OK << 16 | lscsi_status;
1121
1122 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1123 DEBUG2(printk(KERN_INFO
1124 "scsi(%ld): QUEUE FULL status detected "
1125 "0x%x-0x%x.\n", vha->host_no, comp_status,
1126 scsi_status));
1127
1128 /*
1129 * Adjust queue depth for all luns on the
1130 * port.
1131 */
1132 fcport->last_queue_full = jiffies;
1133 starget_for_each_device(
1134 cp->device->sdev_target, fcport,
1135 qla2x00_adjust_sdev_qdepth_down);
1136 break;
1137 }
1138 if (lscsi_status != SS_CHECK_CONDITION)
1139 break;
1140
1141 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1142 if (!(scsi_status & SS_SENSE_LEN_VALID))
1143 break;
1144
1145 qla2x00_handle_sense(sp, sense_data, sense_len);
1146 } else {
1147 /*
1148 * If RISC reports underrun and target does not report
1149 * it then we must have a lost frame, so tell upper
1150 * layer to retry it by reporting a bus busy.
1151 */
1152 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1153 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1154 "frame(s) detected (%x of %x bytes)..."
1155 "retrying command.\n",
1156 vha->host_no, cp->device->channel,
1157 cp->device->id, cp->device->lun, resid,
1158 scsi_bufflen(cp)));
1159
1160 cp->result = DID_BUS_BUSY << 16;
1161 break;
1162 }
1163
1164 /* Handle mid-layer underflow */
1165 if ((unsigned)(scsi_bufflen(cp) - resid) <
1166 cp->underflow) {
1167 qla_printk(KERN_INFO, ha,
1168 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1169 "detected (%x of %x bytes)...returning "
1170 "error status.\n", vha->host_no,
1171 cp->device->channel, cp->device->id,
1172 cp->device->lun, resid,
1173 scsi_bufflen(cp));
1174
1175 cp->result = DID_ERROR << 16;
1176 break;
1177 }
1178
1179 /* Everybody online, looking good... */
1180 cp->result = DID_OK << 16;
1181 }
1182 break;
1183
1184 case CS_DATA_OVERRUN:
1185 DEBUG2(printk(KERN_INFO
1186 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1187 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1188 scsi_status));
1189 DEBUG2(printk(KERN_INFO
1190 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1191 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1192 cp->cmnd[4], cp->cmnd[5]));
1193 DEBUG2(printk(KERN_INFO
1194 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1195 "status!\n",
1196 cp->serial_number, scsi_bufflen(cp), resid_len));
1197
1198 cp->result = DID_ERROR << 16;
1199 break;
1200
1201 case CS_PORT_LOGGED_OUT:
1202 case CS_PORT_CONFIG_CHG:
1203 case CS_PORT_BUSY:
1204 case CS_INCOMPLETE:
1205 case CS_PORT_UNAVAILABLE:
1206 /*
1207 * If the port is in Target Down state, return all IOs for this
1208 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1209 * retry_queue.
1210 */
1211 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1212 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1213 vha->host_no, cp->device->id, cp->device->lun,
1214 cp->serial_number, comp_status,
1215 atomic_read(&fcport->state)));
1216
1217 /*
1218 * We are going to have the fc class block the rport
1219 * while we try to recover so instruct the mid layer
1220 * to requeue until the class decides how to handle this.
1221 */
1222 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1223 if (atomic_read(&fcport->state) == FCS_ONLINE)
1224 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1225 break;
1226
1227 case CS_RESET:
1228 DEBUG2(printk(KERN_INFO
1229 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1230 vha->host_no, comp_status, scsi_status));
1231
1232 cp->result = DID_RESET << 16;
1233 break;
1234
1235 case CS_ABORTED:
1236 /*
1237 * hv2.19.12 - DID_ABORT does not retry the request if we
1238 * aborted this request then abort otherwise it must be a
1239 * reset.
1240 */
1241 DEBUG2(printk(KERN_INFO
1242 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1243 vha->host_no, comp_status, scsi_status));
1244
1245 cp->result = DID_RESET << 16;
1246 break;
1247
1248 case CS_TIMEOUT:
1249 /*
1250 * We are going to have the fc class block the rport
1251 * while we try to recover so instruct the mid layer
1252 * to requeue until the class decides how to handle this.
1253 */
1254 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1255
1256 if (IS_FWI2_CAPABLE(ha)) {
1257 DEBUG2(printk(KERN_INFO
1258 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1259 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1260 cp->device->id, cp->device->lun, comp_status,
1261 scsi_status));
1262 break;
1263 }
1264 DEBUG2(printk(KERN_INFO
1265 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1266 "sflags=%x.\n", vha->host_no, cp->device->channel,
1267 cp->device->id, cp->device->lun, comp_status, scsi_status,
1268 le16_to_cpu(sts->status_flags)));
1269
1270 /* Check to see if logout occurred. */
1271 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1272 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1273 break;
1274
1275 default:
1276 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1277 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1278 qla_printk(KERN_INFO, ha,
1279 "Unknown status detected 0x%x-0x%x.\n",
1280 comp_status, scsi_status);
1281
1282 cp->result = DID_ERROR << 16;
1283 break;
1284 }
1285
1286 /* Place command on done queue. */
1287 if (vha->status_srb == NULL)
1288 qla2x00_sp_compl(ha, sp);
1289 }
1290
1291 /**
1292 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1293 * @ha: SCSI driver HA context
1294 * @pkt: Entry pointer
1295 *
1296 * Extended sense data.
1297 */
1298 static void
1299 qla2x00_status_cont_entry(scsi_qla_host_t *vha, sts_cont_entry_t *pkt)
1300 {
1301 uint8_t sense_sz = 0;
1302 struct qla_hw_data *ha = vha->hw;
1303 srb_t *sp = vha->status_srb;
1304 struct scsi_cmnd *cp;
1305
1306 if (sp != NULL && sp->request_sense_length != 0) {
1307 cp = sp->cmd;
1308 if (cp == NULL) {
1309 DEBUG2(printk("%s(): Cmd already returned back to OS "
1310 "sp=%p.\n", __func__, sp));
1311 qla_printk(KERN_INFO, ha,
1312 "cmd is NULL: already returned to OS (sp=%p)\n",
1313 sp);
1314
1315 vha->status_srb = NULL;
1316 return;
1317 }
1318
1319 if (sp->request_sense_length > sizeof(pkt->data)) {
1320 sense_sz = sizeof(pkt->data);
1321 } else {
1322 sense_sz = sp->request_sense_length;
1323 }
1324
1325 /* Move sense data. */
1326 if (IS_FWI2_CAPABLE(ha))
1327 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1328 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1329 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1330
1331 sp->request_sense_ptr += sense_sz;
1332 sp->request_sense_length -= sense_sz;
1333
1334 /* Place command on done queue. */
1335 if (sp->request_sense_length == 0) {
1336 vha->status_srb = NULL;
1337 qla2x00_sp_compl(ha, sp);
1338 }
1339 }
1340 }
1341
1342 /**
1343 * qla2x00_error_entry() - Process an error entry.
1344 * @ha: SCSI driver HA context
1345 * @pkt: Entry pointer
1346 */
1347 static void
1348 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1349 {
1350 srb_t *sp;
1351 struct qla_hw_data *ha = vha->hw;
1352 struct req_que *req = rsp->req;
1353 #if defined(QL_DEBUG_LEVEL_2)
1354 if (pkt->entry_status & RF_INV_E_ORDER)
1355 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1356 else if (pkt->entry_status & RF_INV_E_COUNT)
1357 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1358 else if (pkt->entry_status & RF_INV_E_PARAM)
1359 qla_printk(KERN_ERR, ha,
1360 "%s: Invalid Entry Parameter\n", __func__);
1361 else if (pkt->entry_status & RF_INV_E_TYPE)
1362 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1363 else if (pkt->entry_status & RF_BUSY)
1364 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1365 else
1366 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1367 #endif
1368
1369 /* Validate handle. */
1370 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1371 sp = req->outstanding_cmds[pkt->handle];
1372 else
1373 sp = NULL;
1374
1375 if (sp) {
1376 /* Free outstanding command slot. */
1377 req->outstanding_cmds[pkt->handle] = NULL;
1378
1379 /* Bad payload or header */
1380 if (pkt->entry_status &
1381 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1382 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1383 sp->cmd->result = DID_ERROR << 16;
1384 } else if (pkt->entry_status & RF_BUSY) {
1385 sp->cmd->result = DID_BUS_BUSY << 16;
1386 } else {
1387 sp->cmd->result = DID_ERROR << 16;
1388 }
1389 qla2x00_sp_compl(ha, sp);
1390
1391 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1392 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1393 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1394 vha->host_no));
1395 qla_printk(KERN_WARNING, ha,
1396 "Error entry - invalid handle\n");
1397
1398 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1399 qla2xxx_wake_dpc(vha);
1400 }
1401 }
1402
1403 /**
1404 * qla24xx_mbx_completion() - Process mailbox command completions.
1405 * @ha: SCSI driver HA context
1406 * @mb0: Mailbox0 register
1407 */
1408 static void
1409 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1410 {
1411 uint16_t cnt;
1412 uint16_t __iomem *wptr;
1413 struct qla_hw_data *ha = vha->hw;
1414 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1415
1416 /* Load return mailbox registers. */
1417 ha->flags.mbox_int = 1;
1418 ha->mailbox_out[0] = mb0;
1419 wptr = (uint16_t __iomem *)&reg->mailbox1;
1420
1421 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1422 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1423 wptr++;
1424 }
1425
1426 if (ha->mcp) {
1427 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1428 __func__, vha->host_no, ha->mcp->mb[0]));
1429 } else {
1430 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1431 __func__, vha->host_no));
1432 }
1433 }
1434
1435 /**
1436 * qla24xx_process_response_queue() - Process response queue entries.
1437 * @ha: SCSI driver HA context
1438 */
1439 void
1440 qla24xx_process_response_queue(struct rsp_que *rsp)
1441 {
1442 struct qla_hw_data *ha = rsp->hw;
1443 struct sts_entry_24xx *pkt;
1444 struct scsi_qla_host *vha;
1445
1446 vha = qla2x00_get_rsp_host(rsp);
1447
1448 if (!vha->flags.online)
1449 return;
1450
1451 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1452 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1453
1454 rsp->ring_index++;
1455 if (rsp->ring_index == rsp->length) {
1456 rsp->ring_index = 0;
1457 rsp->ring_ptr = rsp->ring;
1458 } else {
1459 rsp->ring_ptr++;
1460 }
1461
1462 if (pkt->entry_status != 0) {
1463 DEBUG3(printk(KERN_INFO
1464 "scsi(%ld): Process error entry.\n", vha->host_no));
1465
1466 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1467 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1468 wmb();
1469 continue;
1470 }
1471
1472 switch (pkt->entry_type) {
1473 case STATUS_TYPE:
1474 qla2x00_status_entry(vha, rsp, pkt);
1475 break;
1476 case STATUS_CONT_TYPE:
1477 qla2x00_status_cont_entry(vha, (sts_cont_entry_t *)pkt);
1478 break;
1479 case VP_RPT_ID_IOCB_TYPE:
1480 qla24xx_report_id_acquisition(vha,
1481 (struct vp_rpt_id_entry_24xx *)pkt);
1482 break;
1483 default:
1484 /* Type Not Supported. */
1485 DEBUG4(printk(KERN_WARNING
1486 "scsi(%ld): Received unknown response pkt type %x "
1487 "entry status=%x.\n",
1488 vha->host_no, pkt->entry_type, pkt->entry_status));
1489 break;
1490 }
1491 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1492 wmb();
1493 }
1494
1495 /* Adjust ring index */
1496 ha->isp_ops->wrt_rsp_reg(ha, rsp->id, rsp->ring_index);
1497 }
1498
1499 static void
1500 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1501 {
1502 int rval;
1503 uint32_t cnt;
1504 struct qla_hw_data *ha = vha->hw;
1505 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1506
1507 if (!IS_QLA25XX(ha))
1508 return;
1509
1510 rval = QLA_SUCCESS;
1511 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1512 RD_REG_DWORD(&reg->iobase_addr);
1513 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1514 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1515 rval == QLA_SUCCESS; cnt--) {
1516 if (cnt) {
1517 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1518 udelay(10);
1519 } else
1520 rval = QLA_FUNCTION_TIMEOUT;
1521 }
1522 if (rval == QLA_SUCCESS)
1523 goto next_test;
1524
1525 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1526 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1527 rval == QLA_SUCCESS; cnt--) {
1528 if (cnt) {
1529 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1530 udelay(10);
1531 } else
1532 rval = QLA_FUNCTION_TIMEOUT;
1533 }
1534 if (rval != QLA_SUCCESS)
1535 goto done;
1536
1537 next_test:
1538 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1539 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1540
1541 done:
1542 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1543 RD_REG_DWORD(&reg->iobase_window);
1544 }
1545
1546 /**
1547 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1548 * @irq:
1549 * @dev_id: SCSI driver HA context
1550 *
1551 * Called by system whenever the host adapter generates an interrupt.
1552 *
1553 * Returns handled flag.
1554 */
1555 irqreturn_t
1556 qla24xx_intr_handler(int irq, void *dev_id)
1557 {
1558 scsi_qla_host_t *vha;
1559 struct qla_hw_data *ha;
1560 struct device_reg_24xx __iomem *reg;
1561 int status;
1562 unsigned long iter;
1563 uint32_t stat;
1564 uint32_t hccr;
1565 uint16_t mb[4];
1566 struct rsp_que *rsp;
1567
1568 rsp = (struct rsp_que *) dev_id;
1569 if (!rsp) {
1570 printk(KERN_INFO
1571 "%s(): NULL response queue pointer\n", __func__);
1572 return IRQ_NONE;
1573 }
1574
1575 ha = rsp->hw;
1576 reg = &ha->iobase->isp24;
1577 status = 0;
1578
1579 spin_lock(&ha->hardware_lock);
1580 vha = qla2x00_get_rsp_host(rsp);
1581 for (iter = 50; iter--; ) {
1582 stat = RD_REG_DWORD(&reg->host_status);
1583 if (stat & HSRX_RISC_PAUSED) {
1584 if (pci_channel_offline(ha->pdev))
1585 break;
1586
1587 hccr = RD_REG_DWORD(&reg->hccr);
1588
1589 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1590 "Dumping firmware!\n", hccr);
1591
1592 qla2xxx_check_risc_status(vha);
1593
1594 ha->isp_ops->fw_dump(vha, 1);
1595 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1596 break;
1597 } else if ((stat & HSRX_RISC_INT) == 0)
1598 break;
1599
1600 switch (stat & 0xff) {
1601 case 0x1:
1602 case 0x2:
1603 case 0x10:
1604 case 0x11:
1605 qla24xx_mbx_completion(vha, MSW(stat));
1606 status |= MBX_INTERRUPT;
1607
1608 break;
1609 case 0x12:
1610 mb[0] = MSW(stat);
1611 mb[1] = RD_REG_WORD(&reg->mailbox1);
1612 mb[2] = RD_REG_WORD(&reg->mailbox2);
1613 mb[3] = RD_REG_WORD(&reg->mailbox3);
1614 qla2x00_async_event(vha, rsp, mb);
1615 break;
1616 case 0x13:
1617 case 0x14:
1618 qla24xx_process_response_queue(rsp);
1619 break;
1620 default:
1621 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1622 "(%d).\n",
1623 vha->host_no, stat & 0xff));
1624 break;
1625 }
1626 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1627 RD_REG_DWORD_RELAXED(&reg->hccr);
1628 }
1629 spin_unlock(&ha->hardware_lock);
1630
1631 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1632 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1633 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1634 complete(&ha->mbx_intr_comp);
1635 }
1636
1637 return IRQ_HANDLED;
1638 }
1639
1640 static irqreturn_t
1641 qla24xx_msix_rsp_q(int irq, void *dev_id)
1642 {
1643 struct qla_hw_data *ha;
1644 struct rsp_que *rsp;
1645 struct device_reg_24xx __iomem *reg;
1646
1647 rsp = (struct rsp_que *) dev_id;
1648 if (!rsp) {
1649 printk(KERN_INFO
1650 "%s(): NULL response queue pointer\n", __func__);
1651 return IRQ_NONE;
1652 }
1653 ha = rsp->hw;
1654 reg = &ha->iobase->isp24;
1655
1656 spin_lock_irq(&ha->hardware_lock);
1657
1658 qla24xx_process_response_queue(rsp);
1659 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1660
1661 spin_unlock_irq(&ha->hardware_lock);
1662
1663 return IRQ_HANDLED;
1664 }
1665
1666 static irqreturn_t
1667 qla25xx_msix_rsp_q(int irq, void *dev_id)
1668 {
1669 struct qla_hw_data *ha;
1670 struct rsp_que *rsp;
1671 struct device_reg_24xx __iomem *reg;
1672 uint16_t msix_disabled_hccr = 0;
1673
1674 rsp = (struct rsp_que *) dev_id;
1675 if (!rsp) {
1676 printk(KERN_INFO
1677 "%s(): NULL response queue pointer\n", __func__);
1678 return IRQ_NONE;
1679 }
1680 ha = rsp->hw;
1681 reg = &ha->iobase->isp24;
1682
1683 spin_lock_irq(&ha->hardware_lock);
1684
1685 msix_disabled_hccr = rsp->options;
1686 if (!rsp->id)
1687 msix_disabled_hccr &= __constant_cpu_to_le32(BIT_22);
1688 else
1689 msix_disabled_hccr &= __constant_cpu_to_le32(BIT_6);
1690
1691 qla24xx_process_response_queue(rsp);
1692
1693 if (!msix_disabled_hccr)
1694 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1695
1696 spin_unlock_irq(&ha->hardware_lock);
1697
1698 return IRQ_HANDLED;
1699 }
1700
1701 static irqreturn_t
1702 qla24xx_msix_default(int irq, void *dev_id)
1703 {
1704 scsi_qla_host_t *vha;
1705 struct qla_hw_data *ha;
1706 struct rsp_que *rsp;
1707 struct device_reg_24xx __iomem *reg;
1708 int status;
1709 uint32_t stat;
1710 uint32_t hccr;
1711 uint16_t mb[4];
1712
1713 rsp = (struct rsp_que *) dev_id;
1714 if (!rsp) {
1715 DEBUG(printk(
1716 "%s(): NULL response queue pointer\n", __func__));
1717 return IRQ_NONE;
1718 }
1719 ha = rsp->hw;
1720 reg = &ha->iobase->isp24;
1721 status = 0;
1722
1723 spin_lock_irq(&ha->hardware_lock);
1724 vha = qla2x00_get_rsp_host(rsp);
1725 do {
1726 stat = RD_REG_DWORD(&reg->host_status);
1727 if (stat & HSRX_RISC_PAUSED) {
1728 if (pci_channel_offline(ha->pdev))
1729 break;
1730
1731 hccr = RD_REG_DWORD(&reg->hccr);
1732
1733 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1734 "Dumping firmware!\n", hccr);
1735
1736 qla2xxx_check_risc_status(vha);
1737
1738 ha->isp_ops->fw_dump(vha, 1);
1739 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1740 break;
1741 } else if ((stat & HSRX_RISC_INT) == 0)
1742 break;
1743
1744 switch (stat & 0xff) {
1745 case 0x1:
1746 case 0x2:
1747 case 0x10:
1748 case 0x11:
1749 qla24xx_mbx_completion(vha, MSW(stat));
1750 status |= MBX_INTERRUPT;
1751
1752 break;
1753 case 0x12:
1754 mb[0] = MSW(stat);
1755 mb[1] = RD_REG_WORD(&reg->mailbox1);
1756 mb[2] = RD_REG_WORD(&reg->mailbox2);
1757 mb[3] = RD_REG_WORD(&reg->mailbox3);
1758 qla2x00_async_event(vha, rsp, mb);
1759 break;
1760 case 0x13:
1761 case 0x14:
1762 qla24xx_process_response_queue(rsp);
1763 break;
1764 default:
1765 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1766 "(%d).\n",
1767 vha->host_no, stat & 0xff));
1768 break;
1769 }
1770 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1771 } while (0);
1772 spin_unlock_irq(&ha->hardware_lock);
1773
1774 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1775 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1776 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1777 complete(&ha->mbx_intr_comp);
1778 }
1779
1780 return IRQ_HANDLED;
1781 }
1782
1783 /* Interrupt handling helpers. */
1784
1785 struct qla_init_msix_entry {
1786 uint16_t entry;
1787 uint16_t index;
1788 const char *name;
1789 irq_handler_t handler;
1790 };
1791
1792 static struct qla_init_msix_entry base_queue = {
1793 .entry = 0,
1794 .index = 0,
1795 .name = "qla2xxx (default)",
1796 .handler = qla24xx_msix_default,
1797 };
1798
1799 static struct qla_init_msix_entry base_rsp_queue = {
1800 .entry = 1,
1801 .index = 1,
1802 .name = "qla2xxx (rsp_q)",
1803 .handler = qla24xx_msix_rsp_q,
1804 };
1805
1806 static struct qla_init_msix_entry multi_rsp_queue = {
1807 .entry = 1,
1808 .index = 1,
1809 .name = "qla2xxx (multi_q)",
1810 .handler = qla25xx_msix_rsp_q,
1811 };
1812
1813 static void
1814 qla24xx_disable_msix(struct qla_hw_data *ha)
1815 {
1816 int i;
1817 struct qla_msix_entry *qentry;
1818
1819 for (i = 0; i < ha->msix_count; i++) {
1820 qentry = &ha->msix_entries[i];
1821 if (qentry->have_irq)
1822 free_irq(qentry->vector, qentry->rsp);
1823 }
1824 pci_disable_msix(ha->pdev);
1825 kfree(ha->msix_entries);
1826 ha->msix_entries = NULL;
1827 ha->flags.msix_enabled = 0;
1828 }
1829
1830 static int
1831 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1832 {
1833 int i, ret;
1834 struct msix_entry *entries;
1835 struct qla_msix_entry *qentry;
1836 struct qla_init_msix_entry *msix_queue;
1837
1838 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
1839 GFP_KERNEL);
1840 if (!entries)
1841 return -ENOMEM;
1842
1843 for (i = 0; i < ha->msix_count; i++)
1844 entries[i].entry = i;
1845
1846 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1847 if (ret) {
1848 qla_printk(KERN_WARNING, ha,
1849 "MSI-X: Failed to enable support -- %d/%d\n"
1850 " Retry with %d vectors\n", ha->msix_count, ret, ret);
1851 ha->msix_count = ret;
1852 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1853 if (ret) {
1854 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
1855 " support, giving up -- %d/%d\n",
1856 ha->msix_count, ret);
1857 goto msix_out;
1858 }
1859 ha->max_queues = ha->msix_count - 1;
1860 }
1861 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
1862 ha->msix_count, GFP_KERNEL);
1863 if (!ha->msix_entries) {
1864 ret = -ENOMEM;
1865 goto msix_out;
1866 }
1867 ha->flags.msix_enabled = 1;
1868
1869 for (i = 0; i < ha->msix_count; i++) {
1870 qentry = &ha->msix_entries[i];
1871 qentry->vector = entries[i].vector;
1872 qentry->entry = entries[i].entry;
1873 qentry->have_irq = 0;
1874 qentry->rsp = NULL;
1875 }
1876
1877 /* Enable MSI-X for AENs for queue 0 */
1878 qentry = &ha->msix_entries[0];
1879 ret = request_irq(qentry->vector, base_queue.handler, 0,
1880 base_queue.name, rsp);
1881 if (ret) {
1882 qla_printk(KERN_WARNING, ha,
1883 "MSI-X: Unable to register handler -- %x/%d.\n",
1884 qentry->vector, ret);
1885 qla24xx_disable_msix(ha);
1886 goto msix_out;
1887 }
1888 qentry->have_irq = 1;
1889 qentry->rsp = rsp;
1890
1891 /* Enable MSI-X vector for response queue update for queue 0 */
1892 if (ha->max_queues > 1 && ha->mqiobase) {
1893 ha->mqenable = 1;
1894 msix_queue = &multi_rsp_queue;
1895 qla_printk(KERN_INFO, ha,
1896 "MQ enabled, Number of Queue Resources: %d \n",
1897 ha->max_queues);
1898 } else {
1899 ha->mqenable = 0;
1900 msix_queue = &base_rsp_queue;
1901 }
1902
1903 qentry = &ha->msix_entries[1];
1904 ret = request_irq(qentry->vector, msix_queue->handler, 0,
1905 msix_queue->name, rsp);
1906 if (ret) {
1907 qla_printk(KERN_WARNING, ha,
1908 "MSI-X: Unable to register handler -- %x/%d.\n",
1909 qentry->vector, ret);
1910 qla24xx_disable_msix(ha);
1911 ha->mqenable = 0;
1912 goto msix_out;
1913 }
1914 qentry->have_irq = 1;
1915 qentry->rsp = rsp;
1916
1917 msix_out:
1918 kfree(entries);
1919 return ret;
1920 }
1921
1922 int
1923 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
1924 {
1925 int ret;
1926 device_reg_t __iomem *reg = ha->iobase;
1927
1928 /* If possible, enable MSI-X. */
1929 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1930 goto skip_msix;
1931
1932 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
1933 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1934 DEBUG2(qla_printk(KERN_WARNING, ha,
1935 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1936 ha->pdev->revision, ha->fw_attributes));
1937
1938 goto skip_msix;
1939 }
1940
1941 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
1942 (ha->pdev->subsystem_device == 0x7040 ||
1943 ha->pdev->subsystem_device == 0x7041 ||
1944 ha->pdev->subsystem_device == 0x1705)) {
1945 DEBUG2(qla_printk(KERN_WARNING, ha,
1946 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
1947 ha->pdev->subsystem_vendor,
1948 ha->pdev->subsystem_device));
1949
1950 goto skip_msi;
1951 }
1952
1953 ret = qla24xx_enable_msix(ha, rsp);
1954 if (!ret) {
1955 DEBUG2(qla_printk(KERN_INFO, ha,
1956 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
1957 ha->fw_attributes));
1958 goto clear_risc_ints;
1959 }
1960 qla_printk(KERN_WARNING, ha,
1961 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
1962 skip_msix:
1963
1964 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha))
1965 goto skip_msi;
1966
1967 ret = pci_enable_msi(ha->pdev);
1968 if (!ret) {
1969 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
1970 ha->flags.msi_enabled = 1;
1971 }
1972 skip_msi:
1973
1974 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
1975 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
1976 if (ret) {
1977 qla_printk(KERN_WARNING, ha,
1978 "Failed to reserve interrupt %d already in use.\n",
1979 ha->pdev->irq);
1980 goto fail;
1981 }
1982 ha->flags.inta_enabled = 1;
1983 clear_risc_ints:
1984
1985 spin_lock_irq(&ha->hardware_lock);
1986 if (IS_FWI2_CAPABLE(ha)) {
1987 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
1988 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
1989 } else {
1990 WRT_REG_WORD(&reg->isp.semaphore, 0);
1991 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
1992 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
1993 }
1994 spin_unlock_irq(&ha->hardware_lock);
1995
1996 fail:
1997 return ret;
1998 }
1999
2000 void
2001 qla2x00_free_irqs(scsi_qla_host_t *vha)
2002 {
2003 struct qla_hw_data *ha = vha->hw;
2004 struct rsp_que *rsp = ha->rsp_q_map[0];
2005
2006 if (ha->flags.msix_enabled)
2007 qla24xx_disable_msix(ha);
2008 else if (ha->flags.inta_enabled) {
2009 free_irq(ha->pdev->irq, rsp);
2010 pci_disable_msi(ha->pdev);
2011 }
2012 }
2013
2014 static struct scsi_qla_host *
2015 qla2x00_get_rsp_host(struct rsp_que *rsp)
2016 {
2017 srb_t *sp;
2018 struct qla_hw_data *ha = rsp->hw;
2019 struct scsi_qla_host *vha = NULL;
2020 struct sts_entry_24xx *pkt;
2021 struct req_que *req;
2022
2023 if (rsp->id) {
2024 pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2025 req = rsp->req;
2026 if (pkt && pkt->handle < MAX_OUTSTANDING_COMMANDS) {
2027 sp = req->outstanding_cmds[pkt->handle];
2028 if (sp)
2029 vha = sp->vha;
2030 }
2031 }
2032 if (!vha)
2033 /* handle it in base queue */
2034 vha = pci_get_drvdata(ha->pdev);
2035
2036 return vha;
2037 }
2038
2039 int qla25xx_request_irq(struct rsp_que *rsp)
2040 {
2041 struct qla_hw_data *ha = rsp->hw;
2042 struct qla_init_msix_entry *intr = &multi_rsp_queue;
2043 struct qla_msix_entry *msix = rsp->msix;
2044 int ret;
2045
2046 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2047 if (ret) {
2048 qla_printk(KERN_WARNING, ha,
2049 "MSI-X: Unable to register handler -- %x/%d.\n",
2050 msix->vector, ret);
2051 return ret;
2052 }
2053 msix->have_irq = 1;
2054 msix->rsp = rsp;
2055 return ret;
2056 }
2057
2058 void
2059 qla25xx_wrt_rsp_reg(struct qla_hw_data *ha, uint16_t id, uint16_t index)
2060 {
2061 device_reg_t __iomem *reg = (void *) ha->mqiobase + QLA_QUE_PAGE * id;
2062 WRT_REG_DWORD(&reg->isp25mq.rsp_q_out, index);
2063 }
2064
2065 void
2066 qla24xx_wrt_rsp_reg(struct qla_hw_data *ha, uint16_t id, uint16_t index)
2067 {
2068 device_reg_t __iomem *reg = (void *) ha->iobase;
2069 WRT_REG_DWORD(&reg->isp24.rsp_q_out, index);
2070 }
2071
kernel-based virtual machine