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MIPS: handle write_combine in pci_mmap_page_range
[linux-2.6/linux-loongson.git] / drivers / scsi / qla2xxx / qla_isr.c
blobd04981848e561aed9e9c7853619f78c532d84174
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 static void
270 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
271 {
272 static char *event[] =
273 { "Complete", "Request Notification", "Time Extension" };
274 int rval;
275 struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
276 uint16_t __iomem *wptr;
277 uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
278
279 /* Seed data -- mailbox1 -> mailbox7. */
280 wptr = (uint16_t __iomem *)&reg24->mailbox1;
281 for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
282 mb[cnt] = RD_REG_WORD(wptr);
283
284 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
285 "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
286 event[aen & 0xff],
287 mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
288
289 /* Acknowledgement needed? [Notify && non-zero timeout]. */
290 timeout = (descr >> 8) & 0xf;
291 if (aen != MBA_IDC_NOTIFY || !timeout)
292 return;
293
294 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
295 "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
296
297 rval = qla2x00_post_idc_ack_work(vha, mb);
298 if (rval != QLA_SUCCESS)
299 qla_printk(KERN_WARNING, vha->hw,
300 "IDC failed to post ACK.\n");
301 }
302
303 /**
304 * qla2x00_async_event() - Process aynchronous events.
305 * @ha: SCSI driver HA context
306 * @mb: Mailbox registers (0 - 3)
307 */
308 void
309 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
310 {
311 #define LS_UNKNOWN 2
312 static char *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
313 char *link_speed;
314 uint16_t handle_cnt;
315 uint16_t cnt;
316 uint32_t handles[5];
317 struct qla_hw_data *ha = vha->hw;
318 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
319 uint32_t rscn_entry, host_pid;
320 uint8_t rscn_queue_index;
321 unsigned long flags;
322
323 /* Setup to process RIO completion. */
324 handle_cnt = 0;
325 if (IS_QLA81XX(ha))
326 goto skip_rio;
327 switch (mb[0]) {
328 case MBA_SCSI_COMPLETION:
329 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
330 handle_cnt = 1;
331 break;
332 case MBA_CMPLT_1_16BIT:
333 handles[0] = mb[1];
334 handle_cnt = 1;
335 mb[0] = MBA_SCSI_COMPLETION;
336 break;
337 case MBA_CMPLT_2_16BIT:
338 handles[0] = mb[1];
339 handles[1] = mb[2];
340 handle_cnt = 2;
341 mb[0] = MBA_SCSI_COMPLETION;
342 break;
343 case MBA_CMPLT_3_16BIT:
344 handles[0] = mb[1];
345 handles[1] = mb[2];
346 handles[2] = mb[3];
347 handle_cnt = 3;
348 mb[0] = MBA_SCSI_COMPLETION;
349 break;
350 case MBA_CMPLT_4_16BIT:
351 handles[0] = mb[1];
352 handles[1] = mb[2];
353 handles[2] = mb[3];
354 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
355 handle_cnt = 4;
356 mb[0] = MBA_SCSI_COMPLETION;
357 break;
358 case MBA_CMPLT_5_16BIT:
359 handles[0] = mb[1];
360 handles[1] = mb[2];
361 handles[2] = mb[3];
362 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
363 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
364 handle_cnt = 5;
365 mb[0] = MBA_SCSI_COMPLETION;
366 break;
367 case MBA_CMPLT_2_32BIT:
368 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
369 handles[1] = le32_to_cpu(
370 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
371 RD_MAILBOX_REG(ha, reg, 6));
372 handle_cnt = 2;
373 mb[0] = MBA_SCSI_COMPLETION;
374 break;
375 default:
376 break;
377 }
378 skip_rio:
379 switch (mb[0]) {
380 case MBA_SCSI_COMPLETION: /* Fast Post */
381 if (!vha->flags.online)
382 break;
383
384 for (cnt = 0; cnt < handle_cnt; cnt++)
385 qla2x00_process_completed_request(vha, rsp->req,
386 handles[cnt]);
387 break;
388
389 case MBA_RESET: /* Reset */
390 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
391 vha->host_no));
392
393 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
394 break;
395
396 case MBA_SYSTEM_ERR: /* System Error */
397 qla_printk(KERN_INFO, ha,
398 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
399 mb[1], mb[2], mb[3]);
400
401 ha->isp_ops->fw_dump(vha, 1);
402
403 if (IS_FWI2_CAPABLE(ha)) {
404 if (mb[1] == 0 && mb[2] == 0) {
405 qla_printk(KERN_ERR, ha,
406 "Unrecoverable Hardware Error: adapter "
407 "marked OFFLINE!\n");
408 vha->flags.online = 0;
409 } else
410 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
411 } else if (mb[1] == 0) {
412 qla_printk(KERN_INFO, ha,
413 "Unrecoverable Hardware Error: adapter marked "
414 "OFFLINE!\n");
415 vha->flags.online = 0;
416 } else
417 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
418 break;
419
420 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
421 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
422 vha->host_no));
423 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
424
425 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
426 break;
427
428 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
429 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
430 vha->host_no));
431 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
432
433 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
434 break;
435
436 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
437 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
438 vha->host_no));
439 break;
440
441 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
442 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
443 mb[1]));
444 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
445
446 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
447 atomic_set(&vha->loop_state, LOOP_DOWN);
448 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
449 qla2x00_mark_all_devices_lost(vha, 1);
450 }
451
452 if (vha->vp_idx) {
453 atomic_set(&vha->vp_state, VP_FAILED);
454 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
455 }
456
457 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
458 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
459
460 vha->flags.management_server_logged_in = 0;
461 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
462 break;
463
464 case MBA_LOOP_UP: /* Loop Up Event */
465 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
466 link_speed = link_speeds[0];
467 ha->link_data_rate = PORT_SPEED_1GB;
468 } else {
469 link_speed = link_speeds[LS_UNKNOWN];
470 if (mb[1] < 5)
471 link_speed = link_speeds[mb[1]];
472 else if (mb[1] == 0x13)
473 link_speed = link_speeds[5];
474 ha->link_data_rate = mb[1];
475 }
476
477 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
478 vha->host_no, link_speed));
479 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
480 link_speed);
481
482 vha->flags.management_server_logged_in = 0;
483 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
484 break;
485
486 case MBA_LOOP_DOWN: /* Loop Down Event */
487 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
488 "(%x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3]));
489 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
490 mb[1], mb[2], mb[3]);
491
492 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
493 atomic_set(&vha->loop_state, LOOP_DOWN);
494 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
495 vha->device_flags |= DFLG_NO_CABLE;
496 qla2x00_mark_all_devices_lost(vha, 1);
497 }
498
499 if (vha->vp_idx) {
500 atomic_set(&vha->vp_state, VP_FAILED);
501 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
502 }
503
504 vha->flags.management_server_logged_in = 0;
505 ha->link_data_rate = PORT_SPEED_UNKNOWN;
506 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
507 break;
508
509 case MBA_LIP_RESET: /* LIP reset occurred */
510 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
511 vha->host_no, mb[1]));
512 qla_printk(KERN_INFO, ha,
513 "LIP reset occurred (%x).\n", mb[1]);
514
515 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
516 atomic_set(&vha->loop_state, LOOP_DOWN);
517 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
518 qla2x00_mark_all_devices_lost(vha, 1);
519 }
520
521 if (vha->vp_idx) {
522 atomic_set(&vha->vp_state, VP_FAILED);
523 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
524 }
525
526 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
527
528 ha->operating_mode = LOOP;
529 vha->flags.management_server_logged_in = 0;
530 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
531 break;
532
533 /* case MBA_DCBX_COMPLETE: */
534 case MBA_POINT_TO_POINT: /* Point-to-Point */
535 if (IS_QLA2100(ha))
536 break;
537
538 if (IS_QLA81XX(ha))
539 DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
540 "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
541 else
542 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
543 "received.\n", vha->host_no));
544
545 /*
546 * Until there's a transition from loop down to loop up, treat
547 * this as loop down only.
548 */
549 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
550 atomic_set(&vha->loop_state, LOOP_DOWN);
551 if (!atomic_read(&vha->loop_down_timer))
552 atomic_set(&vha->loop_down_timer,
553 LOOP_DOWN_TIME);
554 qla2x00_mark_all_devices_lost(vha, 1);
555 }
556
557 if (vha->vp_idx) {
558 atomic_set(&vha->vp_state, VP_FAILED);
559 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
560 }
561
562 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
563 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
564
565 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
566 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
567
568 ha->flags.gpsc_supported = 1;
569 vha->flags.management_server_logged_in = 0;
570 break;
571
572 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
573 if (IS_QLA2100(ha))
574 break;
575
576 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
577 "received.\n",
578 vha->host_no));
579 qla_printk(KERN_INFO, ha,
580 "Configuration change detected: value=%x.\n", mb[1]);
581
582 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
583 atomic_set(&vha->loop_state, LOOP_DOWN);
584 if (!atomic_read(&vha->loop_down_timer))
585 atomic_set(&vha->loop_down_timer,
586 LOOP_DOWN_TIME);
587 qla2x00_mark_all_devices_lost(vha, 1);
588 }
589
590 if (vha->vp_idx) {
591 atomic_set(&vha->vp_state, VP_FAILED);
592 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
593 }
594
595 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
596 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
597 break;
598
599 case MBA_PORT_UPDATE: /* Port database update */
600 /* Only handle SCNs for our Vport index. */
601 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
602 break;
603
604 /*
605 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
606 * event etc. earlier indicating loop is down) then process
607 * it. Otherwise ignore it and Wait for RSCN to come in.
608 */
609 atomic_set(&vha->loop_down_timer, 0);
610 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
611 atomic_read(&vha->loop_state) != LOOP_DEAD) {
612 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
613 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
614 mb[2], mb[3]));
615 break;
616 }
617
618 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
619 vha->host_no));
620 DEBUG(printk(KERN_INFO
621 "scsi(%ld): Port database changed %04x %04x %04x.\n",
622 vha->host_no, mb[1], mb[2], mb[3]));
623
624 /*
625 * Mark all devices as missing so we will login again.
626 */
627 atomic_set(&vha->loop_state, LOOP_UP);
628
629 qla2x00_mark_all_devices_lost(vha, 1);
630
631 vha->flags.rscn_queue_overflow = 1;
632
633 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
634 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
635 break;
636
637 case MBA_RSCN_UPDATE: /* State Change Registration */
638 /* Check if the Vport has issued a SCR */
639 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
640 break;
641 /* Only handle SCNs for our Vport index. */
642 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
643 break;
644 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
645 vha->host_no));
646 DEBUG(printk(KERN_INFO
647 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
648 vha->host_no, mb[1], mb[2], mb[3]));
649
650 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
651 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
652 | vha->d_id.b.al_pa;
653 if (rscn_entry == host_pid) {
654 DEBUG(printk(KERN_INFO
655 "scsi(%ld): Ignoring RSCN update to local host "
656 "port ID (%06x)\n",
657 vha->host_no, host_pid));
658 break;
659 }
660
661 /* Ignore reserved bits from RSCN-payload. */
662 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
663 rscn_queue_index = vha->rscn_in_ptr + 1;
664 if (rscn_queue_index == MAX_RSCN_COUNT)
665 rscn_queue_index = 0;
666 if (rscn_queue_index != vha->rscn_out_ptr) {
667 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
668 vha->rscn_in_ptr = rscn_queue_index;
669 } else {
670 vha->flags.rscn_queue_overflow = 1;
671 }
672
673 atomic_set(&vha->loop_state, LOOP_UPDATE);
674 atomic_set(&vha->loop_down_timer, 0);
675 vha->flags.management_server_logged_in = 0;
676
677 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
678 set_bit(RSCN_UPDATE, &vha->dpc_flags);
679 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
680 break;
681
682 /* case MBA_RIO_RESPONSE: */
683 case MBA_ZIO_RESPONSE:
684 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
685 vha->host_no));
686
687 if (IS_FWI2_CAPABLE(ha))
688 qla24xx_process_response_queue(rsp);
689 else
690 qla2x00_process_response_queue(rsp);
691 break;
692
693 case MBA_DISCARD_RND_FRAME:
694 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
695 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
696 break;
697
698 case MBA_TRACE_NOTIFICATION:
699 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
700 vha->host_no, mb[1], mb[2]));
701 break;
702
703 case MBA_ISP84XX_ALERT:
704 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
705 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
706
707 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
708 switch (mb[1]) {
709 case A84_PANIC_RECOVERY:
710 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
711 "%04x %04x\n", mb[2], mb[3]);
712 break;
713 case A84_OP_LOGIN_COMPLETE:
714 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
715 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
716 "firmware version %x\n", ha->cs84xx->op_fw_version));
717 break;
718 case A84_DIAG_LOGIN_COMPLETE:
719 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
720 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
721 "diagnostic firmware version %x\n",
722 ha->cs84xx->diag_fw_version));
723 break;
724 case A84_GOLD_LOGIN_COMPLETE:
725 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
726 ha->cs84xx->fw_update = 1;
727 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
728 "firmware version %x\n",
729 ha->cs84xx->gold_fw_version));
730 break;
731 default:
732 qla_printk(KERN_ERR, ha,
733 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
734 mb[1], mb[2], mb[3]);
735 }
736 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
737 break;
738 case MBA_DCBX_START:
739 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
740 vha->host_no, mb[1], mb[2], mb[3]));
741 break;
742 case MBA_DCBX_PARAM_UPDATE:
743 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
744 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
745 break;
746 case MBA_FCF_CONF_ERR:
747 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
748 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
749 break;
750 case MBA_IDC_COMPLETE:
751 case MBA_IDC_NOTIFY:
752 case MBA_IDC_TIME_EXT:
753 qla81xx_idc_event(vha, mb[0], mb[1]);
754 break;
755 }
756
757 if (!vha->vp_idx && ha->num_vhosts)
758 qla2x00_alert_all_vps(rsp, mb);
759 }
760
761 static void
762 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
763 {
764 fc_port_t *fcport = data;
765 struct scsi_qla_host *vha = fcport->vha;
766 struct qla_hw_data *ha = vha->hw;
767 struct req_que *req = NULL;
768
769 req = ha->req_q_map[vha->req_ques[0]];
770 if (!req)
771 return;
772 if (req->max_q_depth <= sdev->queue_depth)
773 return;
774
775 if (sdev->ordered_tags)
776 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
777 sdev->queue_depth + 1);
778 else
779 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
780 sdev->queue_depth + 1);
781
782 fcport->last_ramp_up = jiffies;
783
784 DEBUG2(qla_printk(KERN_INFO, ha,
785 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
786 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
787 sdev->queue_depth));
788 }
789
790 static void
791 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
792 {
793 fc_port_t *fcport = data;
794
795 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
796 return;
797
798 DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
799 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
800 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
801 sdev->queue_depth));
802 }
803
804 static inline void
805 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
806 srb_t *sp)
807 {
808 fc_port_t *fcport;
809 struct scsi_device *sdev;
810
811 sdev = sp->cmd->device;
812 if (sdev->queue_depth >= req->max_q_depth)
813 return;
814
815 fcport = sp->fcport;
816 if (time_before(jiffies,
817 fcport->last_ramp_up + ql2xqfullrampup * HZ))
818 return;
819 if (time_before(jiffies,
820 fcport->last_queue_full + ql2xqfullrampup * HZ))
821 return;
822
823 starget_for_each_device(sdev->sdev_target, fcport,
824 qla2x00_adjust_sdev_qdepth_up);
825 }
826
827 /**
828 * qla2x00_process_completed_request() - Process a Fast Post response.
829 * @ha: SCSI driver HA context
830 * @index: SRB index
831 */
832 static void
833 qla2x00_process_completed_request(struct scsi_qla_host *vha,
834 struct req_que *req, uint32_t index)
835 {
836 srb_t *sp;
837 struct qla_hw_data *ha = vha->hw;
838
839 /* Validate handle. */
840 if (index >= MAX_OUTSTANDING_COMMANDS) {
841 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
842 vha->host_no, index));
843 qla_printk(KERN_WARNING, ha,
844 "Invalid SCSI completion handle %d.\n", index);
845
846 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
847 return;
848 }
849
850 sp = req->outstanding_cmds[index];
851 if (sp) {
852 /* Free outstanding command slot. */
853 req->outstanding_cmds[index] = NULL;
854
855 /* Save ISP completion status */
856 sp->cmd->result = DID_OK << 16;
857
858 qla2x00_ramp_up_queue_depth(vha, req, sp);
859 qla2x00_sp_compl(ha, sp);
860 } else {
861 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
862 vha->host_no));
863 qla_printk(KERN_WARNING, ha,
864 "Invalid ISP SCSI completion handle\n");
865
866 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
867 }
868 }
869
870 /**
871 * qla2x00_process_response_queue() - Process response queue entries.
872 * @ha: SCSI driver HA context
873 */
874 void
875 qla2x00_process_response_queue(struct rsp_que *rsp)
876 {
877 struct scsi_qla_host *vha;
878 struct qla_hw_data *ha = rsp->hw;
879 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
880 sts_entry_t *pkt;
881 uint16_t handle_cnt;
882 uint16_t cnt;
883
884 vha = qla2x00_get_rsp_host(rsp);
885
886 if (!vha->flags.online)
887 return;
888
889 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
890 pkt = (sts_entry_t *)rsp->ring_ptr;
891
892 rsp->ring_index++;
893 if (rsp->ring_index == rsp->length) {
894 rsp->ring_index = 0;
895 rsp->ring_ptr = rsp->ring;
896 } else {
897 rsp->ring_ptr++;
898 }
899
900 if (pkt->entry_status != 0) {
901 DEBUG3(printk(KERN_INFO
902 "scsi(%ld): Process error entry.\n", vha->host_no));
903
904 qla2x00_error_entry(vha, rsp, pkt);
905 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
906 wmb();
907 continue;
908 }
909
910 switch (pkt->entry_type) {
911 case STATUS_TYPE:
912 qla2x00_status_entry(vha, rsp, pkt);
913 break;
914 case STATUS_TYPE_21:
915 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
916 for (cnt = 0; cnt < handle_cnt; cnt++) {
917 qla2x00_process_completed_request(vha, rsp->req,
918 ((sts21_entry_t *)pkt)->handle[cnt]);
919 }
920 break;
921 case STATUS_TYPE_22:
922 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
923 for (cnt = 0; cnt < handle_cnt; cnt++) {
924 qla2x00_process_completed_request(vha, rsp->req,
925 ((sts22_entry_t *)pkt)->handle[cnt]);
926 }
927 break;
928 case STATUS_CONT_TYPE:
929 qla2x00_status_cont_entry(vha, (sts_cont_entry_t *)pkt);
930 break;
931 default:
932 /* Type Not Supported. */
933 DEBUG4(printk(KERN_WARNING
934 "scsi(%ld): Received unknown response pkt type %x "
935 "entry status=%x.\n",
936 vha->host_no, pkt->entry_type, pkt->entry_status));
937 break;
938 }
939 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
940 wmb();
941 }
942
943 /* Adjust ring index */
944 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
945 }
946
947 static inline void
948 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
949 {
950 struct scsi_cmnd *cp = sp->cmd;
951
952 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
953 sense_len = SCSI_SENSE_BUFFERSIZE;
954
955 sp->request_sense_length = sense_len;
956 sp->request_sense_ptr = cp->sense_buffer;
957 if (sp->request_sense_length > 32)
958 sense_len = 32;
959
960 memcpy(cp->sense_buffer, sense_data, sense_len);
961
962 sp->request_sense_ptr += sense_len;
963 sp->request_sense_length -= sense_len;
964 if (sp->request_sense_length != 0)
965 sp->fcport->vha->status_srb = sp;
966
967 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
968 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
969 cp->device->channel, cp->device->id, cp->device->lun, cp,
970 cp->serial_number));
971 if (sense_len)
972 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
973 }
974
975 /**
976 * qla2x00_status_entry() - Process a Status IOCB entry.
977 * @ha: SCSI driver HA context
978 * @pkt: Entry pointer
979 */
980 static void
981 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
982 {
983 srb_t *sp;
984 fc_port_t *fcport;
985 struct scsi_cmnd *cp;
986 sts_entry_t *sts;
987 struct sts_entry_24xx *sts24;
988 uint16_t comp_status;
989 uint16_t scsi_status;
990 uint8_t lscsi_status;
991 int32_t resid;
992 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
993 uint8_t *rsp_info, *sense_data;
994 struct qla_hw_data *ha = vha->hw;
995 struct req_que *req = rsp->req;
996
997 sts = (sts_entry_t *) pkt;
998 sts24 = (struct sts_entry_24xx *) pkt;
999 if (IS_FWI2_CAPABLE(ha)) {
1000 comp_status = le16_to_cpu(sts24->comp_status);
1001 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1002 } else {
1003 comp_status = le16_to_cpu(sts->comp_status);
1004 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1005 }
1006
1007 /* Fast path completion. */
1008 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1009 qla2x00_process_completed_request(vha, req, sts->handle);
1010
1011 return;
1012 }
1013
1014 /* Validate handle. */
1015 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
1016 sp = req->outstanding_cmds[sts->handle];
1017 req->outstanding_cmds[sts->handle] = NULL;
1018 } else
1019 sp = NULL;
1020
1021 if (sp == NULL) {
1022 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1023 vha->host_no));
1024 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1025
1026 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1027 qla2xxx_wake_dpc(vha);
1028 return;
1029 }
1030 cp = sp->cmd;
1031 if (cp == NULL) {
1032 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1033 "pkt->handle=%d sp=%p.\n", vha->host_no, sts->handle, sp));
1034 qla_printk(KERN_WARNING, ha,
1035 "Command is NULL: already returned to OS (sp=%p)\n", sp);
1036
1037 return;
1038 }
1039
1040 lscsi_status = scsi_status & STATUS_MASK;
1041
1042 fcport = sp->fcport;
1043
1044 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1045 if (IS_FWI2_CAPABLE(ha)) {
1046 sense_len = le32_to_cpu(sts24->sense_len);
1047 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1048 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1049 fw_resid_len = le32_to_cpu(sts24->residual_len);
1050 rsp_info = sts24->data;
1051 sense_data = sts24->data;
1052 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1053 } else {
1054 sense_len = le16_to_cpu(sts->req_sense_length);
1055 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1056 resid_len = le32_to_cpu(sts->residual_length);
1057 rsp_info = sts->rsp_info;
1058 sense_data = sts->req_sense_data;
1059 }
1060
1061 /* Check for any FCP transport errors. */
1062 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1063 /* Sense data lies beyond any FCP RESPONSE data. */
1064 if (IS_FWI2_CAPABLE(ha))
1065 sense_data += rsp_info_len;
1066 if (rsp_info_len > 3 && rsp_info[3]) {
1067 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1068 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1069 "retrying command\n", vha->host_no,
1070 cp->device->channel, cp->device->id,
1071 cp->device->lun, rsp_info_len, rsp_info[0],
1072 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1073 rsp_info[5], rsp_info[6], rsp_info[7]));
1074
1075 cp->result = DID_BUS_BUSY << 16;
1076 qla2x00_sp_compl(ha, sp);
1077 return;
1078 }
1079 }
1080
1081 /* Check for overrun. */
1082 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1083 scsi_status & SS_RESIDUAL_OVER)
1084 comp_status = CS_DATA_OVERRUN;
1085
1086 /*
1087 * Based on Host and scsi status generate status code for Linux
1088 */
1089 switch (comp_status) {
1090 case CS_COMPLETE:
1091 case CS_QUEUE_FULL:
1092 if (scsi_status == 0) {
1093 cp->result = DID_OK << 16;
1094 break;
1095 }
1096 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1097 resid = resid_len;
1098 scsi_set_resid(cp, resid);
1099
1100 if (!lscsi_status &&
1101 ((unsigned)(scsi_bufflen(cp) - resid) <
1102 cp->underflow)) {
1103 qla_printk(KERN_INFO, ha,
1104 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1105 "detected (%x of %x bytes)...returning "
1106 "error status.\n", vha->host_no,
1107 cp->device->channel, cp->device->id,
1108 cp->device->lun, resid,
1109 scsi_bufflen(cp));
1110
1111 cp->result = DID_ERROR << 16;
1112 break;
1113 }
1114 }
1115 cp->result = DID_OK << 16 | lscsi_status;
1116
1117 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1118 DEBUG2(printk(KERN_INFO
1119 "scsi(%ld): QUEUE FULL status detected "
1120 "0x%x-0x%x.\n", vha->host_no, comp_status,
1121 scsi_status));
1122
1123 /* Adjust queue depth for all luns on the port. */
1124 fcport->last_queue_full = jiffies;
1125 starget_for_each_device(cp->device->sdev_target,
1126 fcport, qla2x00_adjust_sdev_qdepth_down);
1127 break;
1128 }
1129 if (lscsi_status != SS_CHECK_CONDITION)
1130 break;
1131
1132 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1133 if (!(scsi_status & SS_SENSE_LEN_VALID))
1134 break;
1135
1136 qla2x00_handle_sense(sp, sense_data, sense_len);
1137 break;
1138
1139 case CS_DATA_UNDERRUN:
1140 resid = resid_len;
1141 /* Use F/W calculated residual length. */
1142 if (IS_FWI2_CAPABLE(ha)) {
1143 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1144 lscsi_status = 0;
1145 } else if (resid != fw_resid_len) {
1146 scsi_status &= ~SS_RESIDUAL_UNDER;
1147 lscsi_status = 0;
1148 }
1149 resid = fw_resid_len;
1150 }
1151
1152 if (scsi_status & SS_RESIDUAL_UNDER) {
1153 scsi_set_resid(cp, resid);
1154 } else {
1155 DEBUG2(printk(KERN_INFO
1156 "scsi(%ld:%d:%d) UNDERRUN status detected "
1157 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1158 "os_underflow=0x%x\n", vha->host_no,
1159 cp->device->id, cp->device->lun, comp_status,
1160 scsi_status, resid_len, resid, cp->cmnd[0],
1161 cp->underflow));
1162
1163 }
1164
1165 /*
1166 * Check to see if SCSI Status is non zero. If so report SCSI
1167 * Status.
1168 */
1169 if (lscsi_status != 0) {
1170 cp->result = DID_OK << 16 | lscsi_status;
1171
1172 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1173 DEBUG2(printk(KERN_INFO
1174 "scsi(%ld): QUEUE FULL status detected "
1175 "0x%x-0x%x.\n", vha->host_no, comp_status,
1176 scsi_status));
1177
1178 /*
1179 * Adjust queue depth for all luns on the
1180 * port.
1181 */
1182 fcport->last_queue_full = jiffies;
1183 starget_for_each_device(
1184 cp->device->sdev_target, fcport,
1185 qla2x00_adjust_sdev_qdepth_down);
1186 break;
1187 }
1188 if (lscsi_status != SS_CHECK_CONDITION)
1189 break;
1190
1191 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1192 if (!(scsi_status & SS_SENSE_LEN_VALID))
1193 break;
1194
1195 qla2x00_handle_sense(sp, sense_data, sense_len);
1196 } else {
1197 /*
1198 * If RISC reports underrun and target does not report
1199 * it then we must have a lost frame, so tell upper
1200 * layer to retry it by reporting a bus busy.
1201 */
1202 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1203 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1204 "frame(s) detected (%x of %x bytes)..."
1205 "retrying command.\n",
1206 vha->host_no, cp->device->channel,
1207 cp->device->id, cp->device->lun, resid,
1208 scsi_bufflen(cp)));
1209
1210 cp->result = DID_BUS_BUSY << 16;
1211 break;
1212 }
1213
1214 /* Handle mid-layer underflow */
1215 if ((unsigned)(scsi_bufflen(cp) - resid) <
1216 cp->underflow) {
1217 qla_printk(KERN_INFO, ha,
1218 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1219 "detected (%x of %x bytes)...returning "
1220 "error status.\n", vha->host_no,
1221 cp->device->channel, cp->device->id,
1222 cp->device->lun, resid,
1223 scsi_bufflen(cp));
1224
1225 cp->result = DID_ERROR << 16;
1226 break;
1227 }
1228
1229 /* Everybody online, looking good... */
1230 cp->result = DID_OK << 16;
1231 }
1232 break;
1233
1234 case CS_DATA_OVERRUN:
1235 DEBUG2(printk(KERN_INFO
1236 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1237 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1238 scsi_status));
1239 DEBUG2(printk(KERN_INFO
1240 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1241 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1242 cp->cmnd[4], cp->cmnd[5]));
1243 DEBUG2(printk(KERN_INFO
1244 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1245 "status!\n",
1246 cp->serial_number, scsi_bufflen(cp), resid_len));
1247
1248 cp->result = DID_ERROR << 16;
1249 break;
1250
1251 case CS_PORT_LOGGED_OUT:
1252 case CS_PORT_CONFIG_CHG:
1253 case CS_PORT_BUSY:
1254 case CS_INCOMPLETE:
1255 case CS_PORT_UNAVAILABLE:
1256 /*
1257 * If the port is in Target Down state, return all IOs for this
1258 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1259 * retry_queue.
1260 */
1261 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1262 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1263 vha->host_no, cp->device->id, cp->device->lun,
1264 cp->serial_number, comp_status,
1265 atomic_read(&fcport->state)));
1266
1267 /*
1268 * We are going to have the fc class block the rport
1269 * while we try to recover so instruct the mid layer
1270 * to requeue until the class decides how to handle this.
1271 */
1272 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1273 if (atomic_read(&fcport->state) == FCS_ONLINE)
1274 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1275 break;
1276
1277 case CS_RESET:
1278 DEBUG2(printk(KERN_INFO
1279 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1280 vha->host_no, comp_status, scsi_status));
1281
1282 cp->result = DID_RESET << 16;
1283 break;
1284
1285 case CS_ABORTED:
1286 /*
1287 * hv2.19.12 - DID_ABORT does not retry the request if we
1288 * aborted this request then abort otherwise it must be a
1289 * reset.
1290 */
1291 DEBUG2(printk(KERN_INFO
1292 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1293 vha->host_no, comp_status, scsi_status));
1294
1295 cp->result = DID_RESET << 16;
1296 break;
1297
1298 case CS_TIMEOUT:
1299 /*
1300 * We are going to have the fc class block the rport
1301 * while we try to recover so instruct the mid layer
1302 * to requeue until the class decides how to handle this.
1303 */
1304 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1305
1306 if (IS_FWI2_CAPABLE(ha)) {
1307 DEBUG2(printk(KERN_INFO
1308 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1309 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1310 cp->device->id, cp->device->lun, comp_status,
1311 scsi_status));
1312 break;
1313 }
1314 DEBUG2(printk(KERN_INFO
1315 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1316 "sflags=%x.\n", vha->host_no, cp->device->channel,
1317 cp->device->id, cp->device->lun, comp_status, scsi_status,
1318 le16_to_cpu(sts->status_flags)));
1319
1320 /* Check to see if logout occurred. */
1321 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1322 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1323 break;
1324
1325 default:
1326 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1327 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1328 qla_printk(KERN_INFO, ha,
1329 "Unknown status detected 0x%x-0x%x.\n",
1330 comp_status, scsi_status);
1331
1332 cp->result = DID_ERROR << 16;
1333 break;
1334 }
1335
1336 /* Place command on done queue. */
1337 if (vha->status_srb == NULL)
1338 qla2x00_sp_compl(ha, sp);
1339 }
1340
1341 /**
1342 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1343 * @ha: SCSI driver HA context
1344 * @pkt: Entry pointer
1345 *
1346 * Extended sense data.
1347 */
1348 static void
1349 qla2x00_status_cont_entry(scsi_qla_host_t *vha, sts_cont_entry_t *pkt)
1350 {
1351 uint8_t sense_sz = 0;
1352 struct qla_hw_data *ha = vha->hw;
1353 srb_t *sp = vha->status_srb;
1354 struct scsi_cmnd *cp;
1355
1356 if (sp != NULL && sp->request_sense_length != 0) {
1357 cp = sp->cmd;
1358 if (cp == NULL) {
1359 DEBUG2(printk("%s(): Cmd already returned back to OS "
1360 "sp=%p.\n", __func__, sp));
1361 qla_printk(KERN_INFO, ha,
1362 "cmd is NULL: already returned to OS (sp=%p)\n",
1363 sp);
1364
1365 vha->status_srb = NULL;
1366 return;
1367 }
1368
1369 if (sp->request_sense_length > sizeof(pkt->data)) {
1370 sense_sz = sizeof(pkt->data);
1371 } else {
1372 sense_sz = sp->request_sense_length;
1373 }
1374
1375 /* Move sense data. */
1376 if (IS_FWI2_CAPABLE(ha))
1377 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1378 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1379 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1380
1381 sp->request_sense_ptr += sense_sz;
1382 sp->request_sense_length -= sense_sz;
1383
1384 /* Place command on done queue. */
1385 if (sp->request_sense_length == 0) {
1386 vha->status_srb = NULL;
1387 qla2x00_sp_compl(ha, sp);
1388 }
1389 }
1390 }
1391
1392 /**
1393 * qla2x00_error_entry() - Process an error entry.
1394 * @ha: SCSI driver HA context
1395 * @pkt: Entry pointer
1396 */
1397 static void
1398 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1399 {
1400 srb_t *sp;
1401 struct qla_hw_data *ha = vha->hw;
1402 struct req_que *req = rsp->req;
1403 #if defined(QL_DEBUG_LEVEL_2)
1404 if (pkt->entry_status & RF_INV_E_ORDER)
1405 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1406 else if (pkt->entry_status & RF_INV_E_COUNT)
1407 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1408 else if (pkt->entry_status & RF_INV_E_PARAM)
1409 qla_printk(KERN_ERR, ha,
1410 "%s: Invalid Entry Parameter\n", __func__);
1411 else if (pkt->entry_status & RF_INV_E_TYPE)
1412 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1413 else if (pkt->entry_status & RF_BUSY)
1414 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1415 else
1416 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1417 #endif
1418
1419 /* Validate handle. */
1420 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1421 sp = req->outstanding_cmds[pkt->handle];
1422 else
1423 sp = NULL;
1424
1425 if (sp) {
1426 /* Free outstanding command slot. */
1427 req->outstanding_cmds[pkt->handle] = NULL;
1428
1429 /* Bad payload or header */
1430 if (pkt->entry_status &
1431 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1432 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1433 sp->cmd->result = DID_ERROR << 16;
1434 } else if (pkt->entry_status & RF_BUSY) {
1435 sp->cmd->result = DID_BUS_BUSY << 16;
1436 } else {
1437 sp->cmd->result = DID_ERROR << 16;
1438 }
1439 qla2x00_sp_compl(ha, sp);
1440
1441 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1442 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1443 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1444 vha->host_no));
1445 qla_printk(KERN_WARNING, ha,
1446 "Error entry - invalid handle\n");
1447
1448 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1449 qla2xxx_wake_dpc(vha);
1450 }
1451 }
1452
1453 /**
1454 * qla24xx_mbx_completion() - Process mailbox command completions.
1455 * @ha: SCSI driver HA context
1456 * @mb0: Mailbox0 register
1457 */
1458 static void
1459 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1460 {
1461 uint16_t cnt;
1462 uint16_t __iomem *wptr;
1463 struct qla_hw_data *ha = vha->hw;
1464 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1465
1466 /* Load return mailbox registers. */
1467 ha->flags.mbox_int = 1;
1468 ha->mailbox_out[0] = mb0;
1469 wptr = (uint16_t __iomem *)&reg->mailbox1;
1470
1471 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1472 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1473 wptr++;
1474 }
1475
1476 if (ha->mcp) {
1477 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1478 __func__, vha->host_no, ha->mcp->mb[0]));
1479 } else {
1480 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1481 __func__, vha->host_no));
1482 }
1483 }
1484
1485 /**
1486 * qla24xx_process_response_queue() - Process response queue entries.
1487 * @ha: SCSI driver HA context
1488 */
1489 void
1490 qla24xx_process_response_queue(struct rsp_que *rsp)
1491 {
1492 struct sts_entry_24xx *pkt;
1493 struct scsi_qla_host *vha;
1494
1495 vha = qla2x00_get_rsp_host(rsp);
1496
1497 if (!vha->flags.online)
1498 return;
1499
1500 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1501 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1502
1503 rsp->ring_index++;
1504 if (rsp->ring_index == rsp->length) {
1505 rsp->ring_index = 0;
1506 rsp->ring_ptr = rsp->ring;
1507 } else {
1508 rsp->ring_ptr++;
1509 }
1510
1511 if (pkt->entry_status != 0) {
1512 DEBUG3(printk(KERN_INFO
1513 "scsi(%ld): Process error entry.\n", vha->host_no));
1514
1515 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1516 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1517 wmb();
1518 continue;
1519 }
1520
1521 switch (pkt->entry_type) {
1522 case STATUS_TYPE:
1523 qla2x00_status_entry(vha, rsp, pkt);
1524 break;
1525 case STATUS_CONT_TYPE:
1526 qla2x00_status_cont_entry(vha, (sts_cont_entry_t *)pkt);
1527 break;
1528 case VP_RPT_ID_IOCB_TYPE:
1529 qla24xx_report_id_acquisition(vha,
1530 (struct vp_rpt_id_entry_24xx *)pkt);
1531 break;
1532 default:
1533 /* Type Not Supported. */
1534 DEBUG4(printk(KERN_WARNING
1535 "scsi(%ld): Received unknown response pkt type %x "
1536 "entry status=%x.\n",
1537 vha->host_no, pkt->entry_type, pkt->entry_status));
1538 break;
1539 }
1540 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1541 wmb();
1542 }
1543
1544 /* Adjust ring index */
1545 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1546 }
1547
1548 static void
1549 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1550 {
1551 int rval;
1552 uint32_t cnt;
1553 struct qla_hw_data *ha = vha->hw;
1554 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1555
1556 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1557 return;
1558
1559 rval = QLA_SUCCESS;
1560 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1561 RD_REG_DWORD(&reg->iobase_addr);
1562 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1563 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1564 rval == QLA_SUCCESS; cnt--) {
1565 if (cnt) {
1566 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1567 udelay(10);
1568 } else
1569 rval = QLA_FUNCTION_TIMEOUT;
1570 }
1571 if (rval == QLA_SUCCESS)
1572 goto next_test;
1573
1574 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1575 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1576 rval == QLA_SUCCESS; cnt--) {
1577 if (cnt) {
1578 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1579 udelay(10);
1580 } else
1581 rval = QLA_FUNCTION_TIMEOUT;
1582 }
1583 if (rval != QLA_SUCCESS)
1584 goto done;
1585
1586 next_test:
1587 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1588 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1589
1590 done:
1591 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1592 RD_REG_DWORD(&reg->iobase_window);
1593 }
1594
1595 /**
1596 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1597 * @irq:
1598 * @dev_id: SCSI driver HA context
1599 *
1600 * Called by system whenever the host adapter generates an interrupt.
1601 *
1602 * Returns handled flag.
1603 */
1604 irqreturn_t
1605 qla24xx_intr_handler(int irq, void *dev_id)
1606 {
1607 scsi_qla_host_t *vha;
1608 struct qla_hw_data *ha;
1609 struct device_reg_24xx __iomem *reg;
1610 int status;
1611 unsigned long iter;
1612 uint32_t stat;
1613 uint32_t hccr;
1614 uint16_t mb[4];
1615 struct rsp_que *rsp;
1616
1617 rsp = (struct rsp_que *) dev_id;
1618 if (!rsp) {
1619 printk(KERN_INFO
1620 "%s(): NULL response queue pointer\n", __func__);
1621 return IRQ_NONE;
1622 }
1623
1624 ha = rsp->hw;
1625 reg = &ha->iobase->isp24;
1626 status = 0;
1627
1628 spin_lock(&ha->hardware_lock);
1629 vha = qla2x00_get_rsp_host(rsp);
1630 for (iter = 50; iter--; ) {
1631 stat = RD_REG_DWORD(&reg->host_status);
1632 if (stat & HSRX_RISC_PAUSED) {
1633 if (pci_channel_offline(ha->pdev))
1634 break;
1635
1636 hccr = RD_REG_DWORD(&reg->hccr);
1637
1638 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1639 "Dumping firmware!\n", hccr);
1640
1641 qla2xxx_check_risc_status(vha);
1642
1643 ha->isp_ops->fw_dump(vha, 1);
1644 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1645 break;
1646 } else if ((stat & HSRX_RISC_INT) == 0)
1647 break;
1648
1649 switch (stat & 0xff) {
1650 case 0x1:
1651 case 0x2:
1652 case 0x10:
1653 case 0x11:
1654 qla24xx_mbx_completion(vha, MSW(stat));
1655 status |= MBX_INTERRUPT;
1656
1657 break;
1658 case 0x12:
1659 mb[0] = MSW(stat);
1660 mb[1] = RD_REG_WORD(&reg->mailbox1);
1661 mb[2] = RD_REG_WORD(&reg->mailbox2);
1662 mb[3] = RD_REG_WORD(&reg->mailbox3);
1663 qla2x00_async_event(vha, rsp, mb);
1664 break;
1665 case 0x13:
1666 case 0x14:
1667 qla24xx_process_response_queue(rsp);
1668 break;
1669 default:
1670 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1671 "(%d).\n",
1672 vha->host_no, stat & 0xff));
1673 break;
1674 }
1675 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1676 RD_REG_DWORD_RELAXED(&reg->hccr);
1677 }
1678 spin_unlock(&ha->hardware_lock);
1679
1680 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1681 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1682 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1683 complete(&ha->mbx_intr_comp);
1684 }
1685
1686 return IRQ_HANDLED;
1687 }
1688
1689 static irqreturn_t
1690 qla24xx_msix_rsp_q(int irq, void *dev_id)
1691 {
1692 struct qla_hw_data *ha;
1693 struct rsp_que *rsp;
1694 struct device_reg_24xx __iomem *reg;
1695
1696 rsp = (struct rsp_que *) dev_id;
1697 if (!rsp) {
1698 printk(KERN_INFO
1699 "%s(): NULL response queue pointer\n", __func__);
1700 return IRQ_NONE;
1701 }
1702 ha = rsp->hw;
1703 reg = &ha->iobase->isp24;
1704
1705 spin_lock_irq(&ha->hardware_lock);
1706
1707 qla24xx_process_response_queue(rsp);
1708 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1709
1710 spin_unlock_irq(&ha->hardware_lock);
1711
1712 return IRQ_HANDLED;
1713 }
1714
1715 static irqreturn_t
1716 qla25xx_msix_rsp_q(int irq, void *dev_id)
1717 {
1718 struct qla_hw_data *ha;
1719 struct rsp_que *rsp;
1720 struct device_reg_24xx __iomem *reg;
1721
1722 rsp = (struct rsp_que *) dev_id;
1723 if (!rsp) {
1724 printk(KERN_INFO
1725 "%s(): NULL response queue pointer\n", __func__);
1726 return IRQ_NONE;
1727 }
1728 ha = rsp->hw;
1729 reg = &ha->iobase->isp24;
1730
1731 spin_lock_irq(&ha->hardware_lock);
1732
1733 qla24xx_process_response_queue(rsp);
1734
1735 spin_unlock_irq(&ha->hardware_lock);
1736
1737 return IRQ_HANDLED;
1738 }
1739
1740 static irqreturn_t
1741 qla24xx_msix_default(int irq, void *dev_id)
1742 {
1743 scsi_qla_host_t *vha;
1744 struct qla_hw_data *ha;
1745 struct rsp_que *rsp;
1746 struct device_reg_24xx __iomem *reg;
1747 int status;
1748 uint32_t stat;
1749 uint32_t hccr;
1750 uint16_t mb[4];
1751
1752 rsp = (struct rsp_que *) dev_id;
1753 if (!rsp) {
1754 DEBUG(printk(
1755 "%s(): NULL response queue pointer\n", __func__));
1756 return IRQ_NONE;
1757 }
1758 ha = rsp->hw;
1759 reg = &ha->iobase->isp24;
1760 status = 0;
1761
1762 spin_lock_irq(&ha->hardware_lock);
1763 vha = qla2x00_get_rsp_host(rsp);
1764 do {
1765 stat = RD_REG_DWORD(&reg->host_status);
1766 if (stat & HSRX_RISC_PAUSED) {
1767 if (pci_channel_offline(ha->pdev))
1768 break;
1769
1770 hccr = RD_REG_DWORD(&reg->hccr);
1771
1772 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1773 "Dumping firmware!\n", hccr);
1774
1775 qla2xxx_check_risc_status(vha);
1776
1777 ha->isp_ops->fw_dump(vha, 1);
1778 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1779 break;
1780 } else if ((stat & HSRX_RISC_INT) == 0)
1781 break;
1782
1783 switch (stat & 0xff) {
1784 case 0x1:
1785 case 0x2:
1786 case 0x10:
1787 case 0x11:
1788 qla24xx_mbx_completion(vha, MSW(stat));
1789 status |= MBX_INTERRUPT;
1790
1791 break;
1792 case 0x12:
1793 mb[0] = MSW(stat);
1794 mb[1] = RD_REG_WORD(&reg->mailbox1);
1795 mb[2] = RD_REG_WORD(&reg->mailbox2);
1796 mb[3] = RD_REG_WORD(&reg->mailbox3);
1797 qla2x00_async_event(vha, rsp, mb);
1798 break;
1799 case 0x13:
1800 case 0x14:
1801 qla24xx_process_response_queue(rsp);
1802 break;
1803 default:
1804 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1805 "(%d).\n",
1806 vha->host_no, stat & 0xff));
1807 break;
1808 }
1809 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1810 } while (0);
1811 spin_unlock_irq(&ha->hardware_lock);
1812
1813 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1814 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1815 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1816 complete(&ha->mbx_intr_comp);
1817 }
1818
1819 return IRQ_HANDLED;
1820 }
1821
1822 /* Interrupt handling helpers. */
1823
1824 struct qla_init_msix_entry {
1825 uint16_t entry;
1826 uint16_t index;
1827 const char *name;
1828 irq_handler_t handler;
1829 };
1830
1831 static struct qla_init_msix_entry base_queue = {
1832 .entry = 0,
1833 .index = 0,
1834 .name = "qla2xxx (default)",
1835 .handler = qla24xx_msix_default,
1836 };
1837
1838 static struct qla_init_msix_entry base_rsp_queue = {
1839 .entry = 1,
1840 .index = 1,
1841 .name = "qla2xxx (rsp_q)",
1842 .handler = qla24xx_msix_rsp_q,
1843 };
1844
1845 static struct qla_init_msix_entry multi_rsp_queue = {
1846 .entry = 1,
1847 .index = 1,
1848 .name = "qla2xxx (multi_q)",
1849 .handler = qla25xx_msix_rsp_q,
1850 };
1851
1852 static void
1853 qla24xx_disable_msix(struct qla_hw_data *ha)
1854 {
1855 int i;
1856 struct qla_msix_entry *qentry;
1857
1858 for (i = 0; i < ha->msix_count; i++) {
1859 qentry = &ha->msix_entries[i];
1860 if (qentry->have_irq)
1861 free_irq(qentry->vector, qentry->rsp);
1862 }
1863 pci_disable_msix(ha->pdev);
1864 kfree(ha->msix_entries);
1865 ha->msix_entries = NULL;
1866 ha->flags.msix_enabled = 0;
1867 }
1868
1869 static int
1870 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1871 {
1872 #define MIN_MSIX_COUNT 2
1873 int i, ret;
1874 struct msix_entry *entries;
1875 struct qla_msix_entry *qentry;
1876 struct qla_init_msix_entry *msix_queue;
1877
1878 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
1879 GFP_KERNEL);
1880 if (!entries)
1881 return -ENOMEM;
1882
1883 for (i = 0; i < ha->msix_count; i++)
1884 entries[i].entry = i;
1885
1886 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1887 if (ret) {
1888 if (ret < MIN_MSIX_COUNT)
1889 goto msix_failed;
1890
1891 qla_printk(KERN_WARNING, ha,
1892 "MSI-X: Failed to enable support -- %d/%d\n"
1893 " Retry with %d vectors\n", ha->msix_count, ret, ret);
1894 ha->msix_count = ret;
1895 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1896 if (ret) {
1897 msix_failed:
1898 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
1899 " support, giving up -- %d/%d\n",
1900 ha->msix_count, ret);
1901 goto msix_out;
1902 }
1903 ha->max_queues = ha->msix_count - 1;
1904 }
1905 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
1906 ha->msix_count, GFP_KERNEL);
1907 if (!ha->msix_entries) {
1908 ret = -ENOMEM;
1909 goto msix_out;
1910 }
1911 ha->flags.msix_enabled = 1;
1912
1913 for (i = 0; i < ha->msix_count; i++) {
1914 qentry = &ha->msix_entries[i];
1915 qentry->vector = entries[i].vector;
1916 qentry->entry = entries[i].entry;
1917 qentry->have_irq = 0;
1918 qentry->rsp = NULL;
1919 }
1920
1921 /* Enable MSI-X for AENs for queue 0 */
1922 qentry = &ha->msix_entries[0];
1923 ret = request_irq(qentry->vector, base_queue.handler, 0,
1924 base_queue.name, rsp);
1925 if (ret) {
1926 qla_printk(KERN_WARNING, ha,
1927 "MSI-X: Unable to register handler -- %x/%d.\n",
1928 qentry->vector, ret);
1929 qla24xx_disable_msix(ha);
1930 goto msix_out;
1931 }
1932 qentry->have_irq = 1;
1933 qentry->rsp = rsp;
1934
1935 /* Enable MSI-X vector for response queue update for queue 0 */
1936 if (ha->max_queues > 1 && ha->mqiobase) {
1937 ha->mqenable = 1;
1938 msix_queue = &multi_rsp_queue;
1939 qla_printk(KERN_INFO, ha,
1940 "MQ enabled, Number of Queue Resources: %d \n",
1941 ha->max_queues);
1942 } else {
1943 ha->mqenable = 0;
1944 msix_queue = &base_rsp_queue;
1945 }
1946
1947 qentry = &ha->msix_entries[1];
1948 ret = request_irq(qentry->vector, msix_queue->handler, 0,
1949 msix_queue->name, rsp);
1950 if (ret) {
1951 qla_printk(KERN_WARNING, ha,
1952 "MSI-X: Unable to register handler -- %x/%d.\n",
1953 qentry->vector, ret);
1954 qla24xx_disable_msix(ha);
1955 ha->mqenable = 0;
1956 goto msix_out;
1957 }
1958 qentry->have_irq = 1;
1959 qentry->rsp = rsp;
1960
1961 msix_out:
1962 kfree(entries);
1963 return ret;
1964 }
1965
1966 int
1967 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
1968 {
1969 int ret;
1970 device_reg_t __iomem *reg = ha->iobase;
1971
1972 /* If possible, enable MSI-X. */
1973 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
1974 !IS_QLA8432(ha) && !IS_QLA8001(ha))
1975 goto skip_msix;
1976
1977 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
1978 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1979 DEBUG2(qla_printk(KERN_WARNING, ha,
1980 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1981 ha->pdev->revision, ha->fw_attributes));
1982
1983 goto skip_msix;
1984 }
1985
1986 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
1987 (ha->pdev->subsystem_device == 0x7040 ||
1988 ha->pdev->subsystem_device == 0x7041 ||
1989 ha->pdev->subsystem_device == 0x1705)) {
1990 DEBUG2(qla_printk(KERN_WARNING, ha,
1991 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
1992 ha->pdev->subsystem_vendor,
1993 ha->pdev->subsystem_device));
1994
1995 goto skip_msi;
1996 }
1997
1998 ret = qla24xx_enable_msix(ha, rsp);
1999 if (!ret) {
2000 DEBUG2(qla_printk(KERN_INFO, ha,
2001 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2002 ha->fw_attributes));
2003 goto clear_risc_ints;
2004 }
2005 qla_printk(KERN_WARNING, ha,
2006 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2007 skip_msix:
2008
2009 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2010 !IS_QLA8001(ha))
2011 goto skip_msi;
2012
2013 ret = pci_enable_msi(ha->pdev);
2014 if (!ret) {
2015 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2016 ha->flags.msi_enabled = 1;
2017 }
2018 skip_msi:
2019
2020 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2021 IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2022 if (ret) {
2023 qla_printk(KERN_WARNING, ha,
2024 "Failed to reserve interrupt %d already in use.\n",
2025 ha->pdev->irq);
2026 goto fail;
2027 }
2028 ha->flags.inta_enabled = 1;
2029 clear_risc_ints:
2030
2031 /*
2032 * FIXME: Noted that 8014s were being dropped during NK testing.
2033 * Timing deltas during MSI-X/INTa transitions?
2034 */
2035 if (IS_QLA81XX(ha))
2036 goto fail;
2037 spin_lock_irq(&ha->hardware_lock);
2038 if (IS_FWI2_CAPABLE(ha)) {
2039 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2040 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2041 } else {
2042 WRT_REG_WORD(&reg->isp.semaphore, 0);
2043 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2044 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2045 }
2046 spin_unlock_irq(&ha->hardware_lock);
2047
2048 fail:
2049 return ret;
2050 }
2051
2052 void
2053 qla2x00_free_irqs(scsi_qla_host_t *vha)
2054 {
2055 struct qla_hw_data *ha = vha->hw;
2056 struct rsp_que *rsp = ha->rsp_q_map[0];
2057
2058 if (ha->flags.msix_enabled)
2059 qla24xx_disable_msix(ha);
2060 else if (ha->flags.inta_enabled) {
2061 free_irq(ha->pdev->irq, rsp);
2062 pci_disable_msi(ha->pdev);
2063 }
2064 }
2065
2066 static struct scsi_qla_host *
2067 qla2x00_get_rsp_host(struct rsp_que *rsp)
2068 {
2069 srb_t *sp;
2070 struct qla_hw_data *ha = rsp->hw;
2071 struct scsi_qla_host *vha = NULL;
2072 struct sts_entry_24xx *pkt;
2073 struct req_que *req;
2074
2075 if (rsp->id) {
2076 pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2077 req = rsp->req;
2078 if (pkt && pkt->handle < MAX_OUTSTANDING_COMMANDS) {
2079 sp = req->outstanding_cmds[pkt->handle];
2080 if (sp)
2081 vha = sp->fcport->vha;
2082 }
2083 }
2084 if (!vha)
2085 /* handle it in base queue */
2086 vha = pci_get_drvdata(ha->pdev);
2087
2088 return vha;
2089 }
2090
2091 int qla25xx_request_irq(struct rsp_que *rsp)
2092 {
2093 struct qla_hw_data *ha = rsp->hw;
2094 struct qla_init_msix_entry *intr = &multi_rsp_queue;
2095 struct qla_msix_entry *msix = rsp->msix;
2096 int ret;
2097
2098 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2099 if (ret) {
2100 qla_printk(KERN_WARNING, ha,
2101 "MSI-X: Unable to register handler -- %x/%d.\n",
2102 msix->vector, ret);
2103 return ret;
2104 }
2105 msix->have_irq = 1;
2106 msix->rsp = rsp;
2107 return ret;
2108 }
linux kernel for loongson