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[deliverable/linux.git] / drivers / scsi / qla2xxx / qla_isr.c
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(struct rsp_que *, sts_cont_entry_t *);
17 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
18 sts_entry_t *);
19
20 /**
21 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
22 * @irq:
23 * @dev_id: SCSI driver HA context
24 *
25 * Called by system whenever the host adapter generates an interrupt.
26 *
27 * Returns handled flag.
28 */
29 irqreturn_t
30 qla2100_intr_handler(int irq, void *dev_id)
31 {
32 scsi_qla_host_t *vha;
33 struct qla_hw_data *ha;
34 struct device_reg_2xxx __iomem *reg;
35 int status;
36 unsigned long iter;
37 uint16_t hccr;
38 uint16_t mb[4];
39 struct rsp_que *rsp;
40 unsigned long flags;
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_irqsave(&ha->hardware_lock, flags);
54 vha = pci_get_drvdata(ha->pdev);
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_irqrestore(&ha->hardware_lock, flags);
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 unsigned long flags;
138
139 rsp = (struct rsp_que *) dev_id;
140 if (!rsp) {
141 printk(KERN_INFO
142 "%s(): NULL response queue pointer\n", __func__);
143 return (IRQ_NONE);
144 }
145
146 ha = rsp->hw;
147 reg = &ha->iobase->isp;
148 status = 0;
149
150 spin_lock_irqsave(&ha->hardware_lock, flags);
151 vha = pci_get_drvdata(ha->pdev);
152 for (iter = 50; iter--; ) {
153 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
154 if (stat & HSR_RISC_PAUSED) {
155 if (pci_channel_offline(ha->pdev))
156 break;
157
158 hccr = RD_REG_WORD(&reg->hccr);
159 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
160 qla_printk(KERN_INFO, ha, "Parity error -- "
161 "HCCR=%x, Dumping firmware!\n", hccr);
162 else
163 qla_printk(KERN_INFO, ha, "RISC paused -- "
164 "HCCR=%x, Dumping firmware!\n", hccr);
165
166 /*
167 * Issue a "HARD" reset in order for the RISC
168 * interrupt bit to be cleared. Schedule a big
169 * hammmer to get out of the RISC PAUSED state.
170 */
171 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
172 RD_REG_WORD(&reg->hccr);
173
174 ha->isp_ops->fw_dump(vha, 1);
175 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
176 break;
177 } else if ((stat & HSR_RISC_INT) == 0)
178 break;
179
180 switch (stat & 0xff) {
181 case 0x1:
182 case 0x2:
183 case 0x10:
184 case 0x11:
185 qla2x00_mbx_completion(vha, MSW(stat));
186 status |= MBX_INTERRUPT;
187
188 /* Release mailbox registers. */
189 WRT_REG_WORD(&reg->semaphore, 0);
190 break;
191 case 0x12:
192 mb[0] = MSW(stat);
193 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
194 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
195 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
196 qla2x00_async_event(vha, rsp, mb);
197 break;
198 case 0x13:
199 qla2x00_process_response_queue(rsp);
200 break;
201 case 0x15:
202 mb[0] = MBA_CMPLT_1_16BIT;
203 mb[1] = MSW(stat);
204 qla2x00_async_event(vha, rsp, mb);
205 break;
206 case 0x16:
207 mb[0] = MBA_SCSI_COMPLETION;
208 mb[1] = MSW(stat);
209 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
210 qla2x00_async_event(vha, rsp, mb);
211 break;
212 default:
213 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
214 "(%d).\n",
215 vha->host_no, stat & 0xff));
216 break;
217 }
218 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
219 RD_REG_WORD_RELAXED(&reg->hccr);
220 }
221 spin_unlock_irqrestore(&ha->hardware_lock, flags);
222
223 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
224 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
225 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
226 complete(&ha->mbx_intr_comp);
227 }
228
229 return (IRQ_HANDLED);
230 }
231
232 /**
233 * qla2x00_mbx_completion() - Process mailbox command completions.
234 * @ha: SCSI driver HA context
235 * @mb0: Mailbox0 register
236 */
237 static void
238 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
239 {
240 uint16_t cnt;
241 uint16_t __iomem *wptr;
242 struct qla_hw_data *ha = vha->hw;
243 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
244
245 /* Load return mailbox registers. */
246 ha->flags.mbox_int = 1;
247 ha->mailbox_out[0] = mb0;
248 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
249
250 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
251 if (IS_QLA2200(ha) && cnt == 8)
252 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
253 if (cnt == 4 || cnt == 5)
254 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
255 else
256 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
257
258 wptr++;
259 }
260
261 if (ha->mcp) {
262 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
263 __func__, vha->host_no, ha->mcp->mb[0]));
264 } else {
265 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
266 __func__, vha->host_no));
267 }
268 }
269
270 static void
271 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
272 {
273 static char *event[] =
274 { "Complete", "Request Notification", "Time Extension" };
275 int rval;
276 struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
277 uint16_t __iomem *wptr;
278 uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
279
280 /* Seed data -- mailbox1 -> mailbox7. */
281 wptr = (uint16_t __iomem *)&reg24->mailbox1;
282 for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
283 mb[cnt] = RD_REG_WORD(wptr);
284
285 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
286 "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
287 event[aen & 0xff],
288 mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
289
290 /* Acknowledgement needed? [Notify && non-zero timeout]. */
291 timeout = (descr >> 8) & 0xf;
292 if (aen != MBA_IDC_NOTIFY || !timeout)
293 return;
294
295 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
296 "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
297
298 rval = qla2x00_post_idc_ack_work(vha, mb);
299 if (rval != QLA_SUCCESS)
300 qla_printk(KERN_WARNING, vha->hw,
301 "IDC failed to post ACK.\n");
302 }
303
304 /**
305 * qla2x00_async_event() - Process aynchronous events.
306 * @ha: SCSI driver HA context
307 * @mb: Mailbox registers (0 - 3)
308 */
309 void
310 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
311 {
312 #define LS_UNKNOWN 2
313 static char *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
314 char *link_speed;
315 uint16_t handle_cnt;
316 uint16_t cnt;
317 uint32_t handles[5];
318 struct qla_hw_data *ha = vha->hw;
319 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
320 uint32_t rscn_entry, host_pid;
321 uint8_t rscn_queue_index;
322 unsigned long flags;
323
324 /* Setup to process RIO completion. */
325 handle_cnt = 0;
326 if (IS_QLA81XX(ha))
327 goto skip_rio;
328 switch (mb[0]) {
329 case MBA_SCSI_COMPLETION:
330 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
331 handle_cnt = 1;
332 break;
333 case MBA_CMPLT_1_16BIT:
334 handles[0] = mb[1];
335 handle_cnt = 1;
336 mb[0] = MBA_SCSI_COMPLETION;
337 break;
338 case MBA_CMPLT_2_16BIT:
339 handles[0] = mb[1];
340 handles[1] = mb[2];
341 handle_cnt = 2;
342 mb[0] = MBA_SCSI_COMPLETION;
343 break;
344 case MBA_CMPLT_3_16BIT:
345 handles[0] = mb[1];
346 handles[1] = mb[2];
347 handles[2] = mb[3];
348 handle_cnt = 3;
349 mb[0] = MBA_SCSI_COMPLETION;
350 break;
351 case MBA_CMPLT_4_16BIT:
352 handles[0] = mb[1];
353 handles[1] = mb[2];
354 handles[2] = mb[3];
355 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
356 handle_cnt = 4;
357 mb[0] = MBA_SCSI_COMPLETION;
358 break;
359 case MBA_CMPLT_5_16BIT:
360 handles[0] = mb[1];
361 handles[1] = mb[2];
362 handles[2] = mb[3];
363 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
364 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
365 handle_cnt = 5;
366 mb[0] = MBA_SCSI_COMPLETION;
367 break;
368 case MBA_CMPLT_2_32BIT:
369 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
370 handles[1] = le32_to_cpu(
371 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
372 RD_MAILBOX_REG(ha, reg, 6));
373 handle_cnt = 2;
374 mb[0] = MBA_SCSI_COMPLETION;
375 break;
376 default:
377 break;
378 }
379 skip_rio:
380 switch (mb[0]) {
381 case MBA_SCSI_COMPLETION: /* Fast Post */
382 if (!vha->flags.online)
383 break;
384
385 for (cnt = 0; cnt < handle_cnt; cnt++)
386 qla2x00_process_completed_request(vha, rsp->req,
387 handles[cnt]);
388 break;
389
390 case MBA_RESET: /* Reset */
391 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
392 vha->host_no));
393
394 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
395 break;
396
397 case MBA_SYSTEM_ERR: /* System Error */
398 qla_printk(KERN_INFO, ha,
399 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
400 mb[1], mb[2], mb[3]);
401
402 ha->isp_ops->fw_dump(vha, 1);
403
404 if (IS_FWI2_CAPABLE(ha)) {
405 if (mb[1] == 0 && mb[2] == 0) {
406 qla_printk(KERN_ERR, ha,
407 "Unrecoverable Hardware Error: adapter "
408 "marked OFFLINE!\n");
409 vha->flags.online = 0;
410 } else
411 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
412 } else if (mb[1] == 0) {
413 qla_printk(KERN_INFO, ha,
414 "Unrecoverable Hardware Error: adapter marked "
415 "OFFLINE!\n");
416 vha->flags.online = 0;
417 } else
418 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
419 break;
420
421 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
422 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
423 vha->host_no));
424 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
425
426 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
427 break;
428
429 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
430 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
431 vha->host_no));
432 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
433
434 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
435 break;
436
437 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
438 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
439 vha->host_no));
440 break;
441
442 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
443 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
444 mb[1]));
445 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
446
447 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
448 atomic_set(&vha->loop_state, LOOP_DOWN);
449 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
450 qla2x00_mark_all_devices_lost(vha, 1);
451 }
452
453 if (vha->vp_idx) {
454 atomic_set(&vha->vp_state, VP_FAILED);
455 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
456 }
457
458 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
459 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
460
461 vha->flags.management_server_logged_in = 0;
462 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
463 break;
464
465 case MBA_LOOP_UP: /* Loop Up Event */
466 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
467 link_speed = link_speeds[0];
468 ha->link_data_rate = PORT_SPEED_1GB;
469 } else {
470 link_speed = link_speeds[LS_UNKNOWN];
471 if (mb[1] < 5)
472 link_speed = link_speeds[mb[1]];
473 else if (mb[1] == 0x13)
474 link_speed = link_speeds[5];
475 ha->link_data_rate = mb[1];
476 }
477
478 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
479 vha->host_no, link_speed));
480 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
481 link_speed);
482
483 vha->flags.management_server_logged_in = 0;
484 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
485 break;
486
487 case MBA_LOOP_DOWN: /* Loop Down Event */
488 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
489 "(%x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3]));
490 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
491 mb[1], mb[2], mb[3]);
492
493 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
494 atomic_set(&vha->loop_state, LOOP_DOWN);
495 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
496 vha->device_flags |= DFLG_NO_CABLE;
497 qla2x00_mark_all_devices_lost(vha, 1);
498 }
499
500 if (vha->vp_idx) {
501 atomic_set(&vha->vp_state, VP_FAILED);
502 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
503 }
504
505 vha->flags.management_server_logged_in = 0;
506 ha->link_data_rate = PORT_SPEED_UNKNOWN;
507 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
508 break;
509
510 case MBA_LIP_RESET: /* LIP reset occurred */
511 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
512 vha->host_no, mb[1]));
513 qla_printk(KERN_INFO, ha,
514 "LIP reset occurred (%x).\n", mb[1]);
515
516 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
517 atomic_set(&vha->loop_state, LOOP_DOWN);
518 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
519 qla2x00_mark_all_devices_lost(vha, 1);
520 }
521
522 if (vha->vp_idx) {
523 atomic_set(&vha->vp_state, VP_FAILED);
524 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
525 }
526
527 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
528
529 ha->operating_mode = LOOP;
530 vha->flags.management_server_logged_in = 0;
531 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
532 break;
533
534 /* case MBA_DCBX_COMPLETE: */
535 case MBA_POINT_TO_POINT: /* Point-to-Point */
536 if (IS_QLA2100(ha))
537 break;
538
539 if (IS_QLA81XX(ha))
540 DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
541 "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
542 else
543 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
544 "received.\n", vha->host_no));
545
546 /*
547 * Until there's a transition from loop down to loop up, treat
548 * this as loop down only.
549 */
550 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
551 atomic_set(&vha->loop_state, LOOP_DOWN);
552 if (!atomic_read(&vha->loop_down_timer))
553 atomic_set(&vha->loop_down_timer,
554 LOOP_DOWN_TIME);
555 qla2x00_mark_all_devices_lost(vha, 1);
556 }
557
558 if (vha->vp_idx) {
559 atomic_set(&vha->vp_state, VP_FAILED);
560 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
561 }
562
563 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
564 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
565
566 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
567 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
568
569 ha->flags.gpsc_supported = 1;
570 vha->flags.management_server_logged_in = 0;
571 break;
572
573 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
574 if (IS_QLA2100(ha))
575 break;
576
577 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
578 "received.\n",
579 vha->host_no));
580 qla_printk(KERN_INFO, ha,
581 "Configuration change detected: value=%x.\n", mb[1]);
582
583 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
584 atomic_set(&vha->loop_state, LOOP_DOWN);
585 if (!atomic_read(&vha->loop_down_timer))
586 atomic_set(&vha->loop_down_timer,
587 LOOP_DOWN_TIME);
588 qla2x00_mark_all_devices_lost(vha, 1);
589 }
590
591 if (vha->vp_idx) {
592 atomic_set(&vha->vp_state, VP_FAILED);
593 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
594 }
595
596 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
597 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
598 break;
599
600 case MBA_PORT_UPDATE: /* Port database update */
601 /*
602 * Handle only global and vn-port update events
603 *
604 * Relevant inputs:
605 * mb[1] = N_Port handle of changed port
606 * OR 0xffff for global event
607 * mb[2] = New login state
608 * 7 = Port logged out
609 * mb[3] = LSB is vp_idx, 0xff = all vps
610 *
611 * Skip processing if:
612 * Event is global, vp_idx is NOT all vps,
613 * vp_idx does not match
614 * Event is not global, vp_idx does not match
615 */
616 if ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff)
617 || (mb[1] != 0xffff)) {
618 if (vha->vp_idx != (mb[3] & 0xff))
619 break;
620 }
621
622 /* Global event -- port logout or port unavailable. */
623 if (mb[1] == 0xffff && mb[2] == 0x7) {
624 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
625 vha->host_no));
626 DEBUG(printk(KERN_INFO
627 "scsi(%ld): Port unavailable %04x %04x %04x.\n",
628 vha->host_no, mb[1], mb[2], mb[3]));
629
630 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
631 atomic_set(&vha->loop_state, LOOP_DOWN);
632 atomic_set(&vha->loop_down_timer,
633 LOOP_DOWN_TIME);
634 vha->device_flags |= DFLG_NO_CABLE;
635 qla2x00_mark_all_devices_lost(vha, 1);
636 }
637
638 if (vha->vp_idx) {
639 atomic_set(&vha->vp_state, VP_FAILED);
640 fc_vport_set_state(vha->fc_vport,
641 FC_VPORT_FAILED);
642 qla2x00_mark_all_devices_lost(vha, 1);
643 }
644
645 vha->flags.management_server_logged_in = 0;
646 ha->link_data_rate = PORT_SPEED_UNKNOWN;
647 break;
648 }
649
650 /*
651 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
652 * event etc. earlier indicating loop is down) then process
653 * it. Otherwise ignore it and Wait for RSCN to come in.
654 */
655 atomic_set(&vha->loop_down_timer, 0);
656 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
657 atomic_read(&vha->loop_state) != LOOP_DEAD) {
658 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
659 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
660 mb[2], mb[3]));
661 break;
662 }
663
664 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
665 vha->host_no));
666 DEBUG(printk(KERN_INFO
667 "scsi(%ld): Port database changed %04x %04x %04x.\n",
668 vha->host_no, mb[1], mb[2], mb[3]));
669
670 /*
671 * Mark all devices as missing so we will login again.
672 */
673 atomic_set(&vha->loop_state, LOOP_UP);
674
675 qla2x00_mark_all_devices_lost(vha, 1);
676
677 vha->flags.rscn_queue_overflow = 1;
678
679 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
680 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
681 break;
682
683 case MBA_RSCN_UPDATE: /* State Change Registration */
684 /* Check if the Vport has issued a SCR */
685 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
686 break;
687 /* Only handle SCNs for our Vport index. */
688 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
689 break;
690 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
691 vha->host_no));
692 DEBUG(printk(KERN_INFO
693 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
694 vha->host_no, mb[1], mb[2], mb[3]));
695
696 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
697 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
698 | vha->d_id.b.al_pa;
699 if (rscn_entry == host_pid) {
700 DEBUG(printk(KERN_INFO
701 "scsi(%ld): Ignoring RSCN update to local host "
702 "port ID (%06x)\n",
703 vha->host_no, host_pid));
704 break;
705 }
706
707 /* Ignore reserved bits from RSCN-payload. */
708 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
709 rscn_queue_index = vha->rscn_in_ptr + 1;
710 if (rscn_queue_index == MAX_RSCN_COUNT)
711 rscn_queue_index = 0;
712 if (rscn_queue_index != vha->rscn_out_ptr) {
713 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
714 vha->rscn_in_ptr = rscn_queue_index;
715 } else {
716 vha->flags.rscn_queue_overflow = 1;
717 }
718
719 atomic_set(&vha->loop_state, LOOP_UPDATE);
720 atomic_set(&vha->loop_down_timer, 0);
721 vha->flags.management_server_logged_in = 0;
722
723 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
724 set_bit(RSCN_UPDATE, &vha->dpc_flags);
725 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
726 break;
727
728 /* case MBA_RIO_RESPONSE: */
729 case MBA_ZIO_RESPONSE:
730 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
731 vha->host_no));
732
733 if (IS_FWI2_CAPABLE(ha))
734 qla24xx_process_response_queue(vha, rsp);
735 else
736 qla2x00_process_response_queue(rsp);
737 break;
738
739 case MBA_DISCARD_RND_FRAME:
740 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
741 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
742 break;
743
744 case MBA_TRACE_NOTIFICATION:
745 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
746 vha->host_no, mb[1], mb[2]));
747 break;
748
749 case MBA_ISP84XX_ALERT:
750 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
751 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
752
753 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
754 switch (mb[1]) {
755 case A84_PANIC_RECOVERY:
756 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
757 "%04x %04x\n", mb[2], mb[3]);
758 break;
759 case A84_OP_LOGIN_COMPLETE:
760 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
761 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
762 "firmware version %x\n", ha->cs84xx->op_fw_version));
763 break;
764 case A84_DIAG_LOGIN_COMPLETE:
765 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
766 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
767 "diagnostic firmware version %x\n",
768 ha->cs84xx->diag_fw_version));
769 break;
770 case A84_GOLD_LOGIN_COMPLETE:
771 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
772 ha->cs84xx->fw_update = 1;
773 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
774 "firmware version %x\n",
775 ha->cs84xx->gold_fw_version));
776 break;
777 default:
778 qla_printk(KERN_ERR, ha,
779 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
780 mb[1], mb[2], mb[3]);
781 }
782 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
783 break;
784 case MBA_DCBX_START:
785 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
786 vha->host_no, mb[1], mb[2], mb[3]));
787 break;
788 case MBA_DCBX_PARAM_UPDATE:
789 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
790 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
791 break;
792 case MBA_FCF_CONF_ERR:
793 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
794 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
795 break;
796 case MBA_IDC_COMPLETE:
797 case MBA_IDC_NOTIFY:
798 case MBA_IDC_TIME_EXT:
799 qla81xx_idc_event(vha, mb[0], mb[1]);
800 break;
801 }
802
803 if (!vha->vp_idx && ha->num_vhosts)
804 qla2x00_alert_all_vps(rsp, mb);
805 }
806
807 static void
808 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
809 {
810 fc_port_t *fcport = data;
811 struct scsi_qla_host *vha = fcport->vha;
812 struct qla_hw_data *ha = vha->hw;
813 struct req_que *req = NULL;
814
815 if (!ql2xqfulltracking)
816 return;
817
818 req = vha->req;
819 if (!req)
820 return;
821 if (req->max_q_depth <= sdev->queue_depth)
822 return;
823
824 if (sdev->ordered_tags)
825 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
826 sdev->queue_depth + 1);
827 else
828 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
829 sdev->queue_depth + 1);
830
831 fcport->last_ramp_up = jiffies;
832
833 DEBUG2(qla_printk(KERN_INFO, ha,
834 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
835 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
836 sdev->queue_depth));
837 }
838
839 static void
840 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
841 {
842 fc_port_t *fcport = data;
843
844 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
845 return;
846
847 DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
848 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
849 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
850 sdev->queue_depth));
851 }
852
853 static inline void
854 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
855 srb_t *sp)
856 {
857 fc_port_t *fcport;
858 struct scsi_device *sdev;
859
860 if (!ql2xqfulltracking)
861 return;
862
863 sdev = sp->cmd->device;
864 if (sdev->queue_depth >= req->max_q_depth)
865 return;
866
867 fcport = sp->fcport;
868 if (time_before(jiffies,
869 fcport->last_ramp_up + ql2xqfullrampup * HZ))
870 return;
871 if (time_before(jiffies,
872 fcport->last_queue_full + ql2xqfullrampup * HZ))
873 return;
874
875 starget_for_each_device(sdev->sdev_target, fcport,
876 qla2x00_adjust_sdev_qdepth_up);
877 }
878
879 /**
880 * qla2x00_process_completed_request() - Process a Fast Post response.
881 * @ha: SCSI driver HA context
882 * @index: SRB index
883 */
884 static void
885 qla2x00_process_completed_request(struct scsi_qla_host *vha,
886 struct req_que *req, uint32_t index)
887 {
888 srb_t *sp;
889 struct qla_hw_data *ha = vha->hw;
890
891 /* Validate handle. */
892 if (index >= MAX_OUTSTANDING_COMMANDS) {
893 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
894 vha->host_no, index));
895 qla_printk(KERN_WARNING, ha,
896 "Invalid SCSI completion handle %d.\n", index);
897
898 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
899 return;
900 }
901
902 sp = req->outstanding_cmds[index];
903 if (sp) {
904 /* Free outstanding command slot. */
905 req->outstanding_cmds[index] = NULL;
906
907 /* Save ISP completion status */
908 sp->cmd->result = DID_OK << 16;
909
910 qla2x00_ramp_up_queue_depth(vha, req, sp);
911 qla2x00_sp_compl(ha, sp);
912 } else {
913 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
914 " handle(%d)\n", vha->host_no, req->id, index));
915 qla_printk(KERN_WARNING, ha,
916 "Invalid ISP SCSI completion handle\n");
917
918 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
919 }
920 }
921
922 /**
923 * qla2x00_process_response_queue() - Process response queue entries.
924 * @ha: SCSI driver HA context
925 */
926 void
927 qla2x00_process_response_queue(struct rsp_que *rsp)
928 {
929 struct scsi_qla_host *vha;
930 struct qla_hw_data *ha = rsp->hw;
931 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
932 sts_entry_t *pkt;
933 uint16_t handle_cnt;
934 uint16_t cnt;
935
936 vha = pci_get_drvdata(ha->pdev);
937
938 if (!vha->flags.online)
939 return;
940
941 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
942 pkt = (sts_entry_t *)rsp->ring_ptr;
943
944 rsp->ring_index++;
945 if (rsp->ring_index == rsp->length) {
946 rsp->ring_index = 0;
947 rsp->ring_ptr = rsp->ring;
948 } else {
949 rsp->ring_ptr++;
950 }
951
952 if (pkt->entry_status != 0) {
953 DEBUG3(printk(KERN_INFO
954 "scsi(%ld): Process error entry.\n", vha->host_no));
955
956 qla2x00_error_entry(vha, rsp, pkt);
957 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
958 wmb();
959 continue;
960 }
961
962 switch (pkt->entry_type) {
963 case STATUS_TYPE:
964 qla2x00_status_entry(vha, rsp, pkt);
965 break;
966 case STATUS_TYPE_21:
967 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
968 for (cnt = 0; cnt < handle_cnt; cnt++) {
969 qla2x00_process_completed_request(vha, rsp->req,
970 ((sts21_entry_t *)pkt)->handle[cnt]);
971 }
972 break;
973 case STATUS_TYPE_22:
974 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
975 for (cnt = 0; cnt < handle_cnt; cnt++) {
976 qla2x00_process_completed_request(vha, rsp->req,
977 ((sts22_entry_t *)pkt)->handle[cnt]);
978 }
979 break;
980 case STATUS_CONT_TYPE:
981 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
982 break;
983 default:
984 /* Type Not Supported. */
985 DEBUG4(printk(KERN_WARNING
986 "scsi(%ld): Received unknown response pkt type %x "
987 "entry status=%x.\n",
988 vha->host_no, pkt->entry_type, pkt->entry_status));
989 break;
990 }
991 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
992 wmb();
993 }
994
995 /* Adjust ring index */
996 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
997 }
998
999 static inline void
1000 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
1001 struct rsp_que *rsp)
1002 {
1003 struct scsi_cmnd *cp = sp->cmd;
1004
1005 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1006 sense_len = SCSI_SENSE_BUFFERSIZE;
1007
1008 sp->request_sense_length = sense_len;
1009 sp->request_sense_ptr = cp->sense_buffer;
1010 if (sp->request_sense_length > 32)
1011 sense_len = 32;
1012
1013 memcpy(cp->sense_buffer, sense_data, sense_len);
1014
1015 sp->request_sense_ptr += sense_len;
1016 sp->request_sense_length -= sense_len;
1017 if (sp->request_sense_length != 0)
1018 rsp->status_srb = sp;
1019
1020 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1021 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
1022 cp->device->channel, cp->device->id, cp->device->lun, cp,
1023 cp->serial_number));
1024 if (sense_len)
1025 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1026 }
1027
1028 /**
1029 * qla2x00_status_entry() - Process a Status IOCB entry.
1030 * @ha: SCSI driver HA context
1031 * @pkt: Entry pointer
1032 */
1033 static void
1034 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1035 {
1036 srb_t *sp;
1037 fc_port_t *fcport;
1038 struct scsi_cmnd *cp;
1039 sts_entry_t *sts;
1040 struct sts_entry_24xx *sts24;
1041 uint16_t comp_status;
1042 uint16_t scsi_status;
1043 uint8_t lscsi_status;
1044 int32_t resid;
1045 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
1046 uint8_t *rsp_info, *sense_data;
1047 struct qla_hw_data *ha = vha->hw;
1048 uint32_t handle;
1049 uint16_t que;
1050 struct req_que *req;
1051
1052 sts = (sts_entry_t *) pkt;
1053 sts24 = (struct sts_entry_24xx *) pkt;
1054 if (IS_FWI2_CAPABLE(ha)) {
1055 comp_status = le16_to_cpu(sts24->comp_status);
1056 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1057 } else {
1058 comp_status = le16_to_cpu(sts->comp_status);
1059 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1060 }
1061 handle = (uint32_t) LSW(sts->handle);
1062 que = MSW(sts->handle);
1063 req = ha->req_q_map[que];
1064 /* Fast path completion. */
1065 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1066 qla2x00_process_completed_request(vha, req, handle);
1067
1068 return;
1069 }
1070
1071 /* Validate handle. */
1072 if (handle < MAX_OUTSTANDING_COMMANDS) {
1073 sp = req->outstanding_cmds[handle];
1074 req->outstanding_cmds[handle] = NULL;
1075 } else
1076 sp = NULL;
1077
1078 if (sp == NULL) {
1079 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1080 vha->host_no));
1081 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1082
1083 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1084 qla2xxx_wake_dpc(vha);
1085 return;
1086 }
1087 cp = sp->cmd;
1088 if (cp == NULL) {
1089 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1090 "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
1091 qla_printk(KERN_WARNING, ha,
1092 "Command is NULL: already returned to OS (sp=%p)\n", sp);
1093
1094 return;
1095 }
1096
1097 lscsi_status = scsi_status & STATUS_MASK;
1098
1099 fcport = sp->fcport;
1100
1101 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1102 if (IS_FWI2_CAPABLE(ha)) {
1103 sense_len = le32_to_cpu(sts24->sense_len);
1104 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1105 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1106 fw_resid_len = le32_to_cpu(sts24->residual_len);
1107 rsp_info = sts24->data;
1108 sense_data = sts24->data;
1109 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1110 } else {
1111 sense_len = le16_to_cpu(sts->req_sense_length);
1112 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1113 resid_len = le32_to_cpu(sts->residual_length);
1114 rsp_info = sts->rsp_info;
1115 sense_data = sts->req_sense_data;
1116 }
1117
1118 /* Check for any FCP transport errors. */
1119 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1120 /* Sense data lies beyond any FCP RESPONSE data. */
1121 if (IS_FWI2_CAPABLE(ha))
1122 sense_data += rsp_info_len;
1123 if (rsp_info_len > 3 && rsp_info[3]) {
1124 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1125 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1126 "retrying command\n", vha->host_no,
1127 cp->device->channel, cp->device->id,
1128 cp->device->lun, rsp_info_len, rsp_info[0],
1129 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1130 rsp_info[5], rsp_info[6], rsp_info[7]));
1131
1132 cp->result = DID_BUS_BUSY << 16;
1133 qla2x00_sp_compl(ha, sp);
1134 return;
1135 }
1136 }
1137
1138 /* Check for overrun. */
1139 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1140 scsi_status & SS_RESIDUAL_OVER)
1141 comp_status = CS_DATA_OVERRUN;
1142
1143 /*
1144 * Based on Host and scsi status generate status code for Linux
1145 */
1146 switch (comp_status) {
1147 case CS_COMPLETE:
1148 case CS_QUEUE_FULL:
1149 if (scsi_status == 0) {
1150 cp->result = DID_OK << 16;
1151 break;
1152 }
1153 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1154 resid = resid_len;
1155 scsi_set_resid(cp, resid);
1156
1157 if (!lscsi_status &&
1158 ((unsigned)(scsi_bufflen(cp) - resid) <
1159 cp->underflow)) {
1160 qla_printk(KERN_INFO, ha,
1161 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1162 "detected (%x of %x bytes)...returning "
1163 "error status.\n", vha->host_no,
1164 cp->device->channel, cp->device->id,
1165 cp->device->lun, resid,
1166 scsi_bufflen(cp));
1167
1168 cp->result = DID_ERROR << 16;
1169 break;
1170 }
1171 }
1172 cp->result = DID_OK << 16 | lscsi_status;
1173
1174 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1175 DEBUG2(printk(KERN_INFO
1176 "scsi(%ld): QUEUE FULL status detected "
1177 "0x%x-0x%x.\n", vha->host_no, comp_status,
1178 scsi_status));
1179
1180 /* Adjust queue depth for all luns on the port. */
1181 if (!ql2xqfulltracking)
1182 break;
1183 fcport->last_queue_full = jiffies;
1184 starget_for_each_device(cp->device->sdev_target,
1185 fcport, 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, rsp);
1196 break;
1197
1198 case CS_DATA_UNDERRUN:
1199 resid = resid_len;
1200 /* Use F/W calculated residual length. */
1201 if (IS_FWI2_CAPABLE(ha)) {
1202 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1203 lscsi_status = 0;
1204 } else if (resid != fw_resid_len) {
1205 scsi_status &= ~SS_RESIDUAL_UNDER;
1206 lscsi_status = 0;
1207 }
1208 resid = fw_resid_len;
1209 }
1210
1211 if (scsi_status & SS_RESIDUAL_UNDER) {
1212 scsi_set_resid(cp, resid);
1213 } else {
1214 DEBUG2(printk(KERN_INFO
1215 "scsi(%ld:%d:%d) UNDERRUN status detected "
1216 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1217 "os_underflow=0x%x\n", vha->host_no,
1218 cp->device->id, cp->device->lun, comp_status,
1219 scsi_status, resid_len, resid, cp->cmnd[0],
1220 cp->underflow));
1221
1222 }
1223
1224 /*
1225 * Check to see if SCSI Status is non zero. If so report SCSI
1226 * Status.
1227 */
1228 if (lscsi_status != 0) {
1229 cp->result = DID_OK << 16 | lscsi_status;
1230
1231 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1232 DEBUG2(printk(KERN_INFO
1233 "scsi(%ld): QUEUE FULL status detected "
1234 "0x%x-0x%x.\n", vha->host_no, comp_status,
1235 scsi_status));
1236
1237 /*
1238 * Adjust queue depth for all luns on the
1239 * port.
1240 */
1241 if (!ql2xqfulltracking)
1242 break;
1243 fcport->last_queue_full = jiffies;
1244 starget_for_each_device(
1245 cp->device->sdev_target, fcport,
1246 qla2x00_adjust_sdev_qdepth_down);
1247 break;
1248 }
1249 if (lscsi_status != SS_CHECK_CONDITION)
1250 break;
1251
1252 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1253 if (!(scsi_status & SS_SENSE_LEN_VALID))
1254 break;
1255
1256 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1257 } else {
1258 /*
1259 * If RISC reports underrun and target does not report
1260 * it then we must have a lost frame, so tell upper
1261 * layer to retry it by reporting an error.
1262 */
1263 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1264 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1265 "frame(s) detected (%x of %x bytes)..."
1266 "retrying command.\n",
1267 vha->host_no, cp->device->channel,
1268 cp->device->id, cp->device->lun, resid,
1269 scsi_bufflen(cp)));
1270
1271 scsi_set_resid(cp, resid);
1272 cp->result = DID_ERROR << 16;
1273 break;
1274 }
1275
1276 /* Handle mid-layer underflow */
1277 if ((unsigned)(scsi_bufflen(cp) - resid) <
1278 cp->underflow) {
1279 qla_printk(KERN_INFO, ha,
1280 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1281 "detected (%x of %x bytes)...returning "
1282 "error status.\n", vha->host_no,
1283 cp->device->channel, cp->device->id,
1284 cp->device->lun, resid,
1285 scsi_bufflen(cp));
1286
1287 cp->result = DID_ERROR << 16;
1288 break;
1289 }
1290
1291 /* Everybody online, looking good... */
1292 cp->result = DID_OK << 16;
1293 }
1294 break;
1295
1296 case CS_DATA_OVERRUN:
1297 DEBUG2(printk(KERN_INFO
1298 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1299 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1300 scsi_status));
1301 DEBUG2(printk(KERN_INFO
1302 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1303 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1304 cp->cmnd[4], cp->cmnd[5]));
1305 DEBUG2(printk(KERN_INFO
1306 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1307 "status!\n",
1308 cp->serial_number, scsi_bufflen(cp), resid_len));
1309
1310 cp->result = DID_ERROR << 16;
1311 break;
1312
1313 case CS_PORT_LOGGED_OUT:
1314 case CS_PORT_CONFIG_CHG:
1315 case CS_PORT_BUSY:
1316 case CS_INCOMPLETE:
1317 case CS_PORT_UNAVAILABLE:
1318 /*
1319 * If the port is in Target Down state, return all IOs for this
1320 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1321 * retry_queue.
1322 */
1323 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1324 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1325 vha->host_no, cp->device->id, cp->device->lun,
1326 cp->serial_number, comp_status,
1327 atomic_read(&fcport->state)));
1328
1329 /*
1330 * We are going to have the fc class block the rport
1331 * while we try to recover so instruct the mid layer
1332 * to requeue until the class decides how to handle this.
1333 */
1334 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1335 if (atomic_read(&fcport->state) == FCS_ONLINE)
1336 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1337 break;
1338
1339 case CS_RESET:
1340 DEBUG2(printk(KERN_INFO
1341 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1342 vha->host_no, comp_status, scsi_status));
1343
1344 cp->result = DID_RESET << 16;
1345 break;
1346
1347 case CS_ABORTED:
1348 /*
1349 * hv2.19.12 - DID_ABORT does not retry the request if we
1350 * aborted this request then abort otherwise it must be a
1351 * reset.
1352 */
1353 DEBUG2(printk(KERN_INFO
1354 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1355 vha->host_no, comp_status, scsi_status));
1356
1357 cp->result = DID_RESET << 16;
1358 break;
1359
1360 case CS_TIMEOUT:
1361 /*
1362 * We are going to have the fc class block the rport
1363 * while we try to recover so instruct the mid layer
1364 * to requeue until the class decides how to handle this.
1365 */
1366 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1367
1368 if (IS_FWI2_CAPABLE(ha)) {
1369 DEBUG2(printk(KERN_INFO
1370 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1371 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1372 cp->device->id, cp->device->lun, comp_status,
1373 scsi_status));
1374 break;
1375 }
1376 DEBUG2(printk(KERN_INFO
1377 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1378 "sflags=%x.\n", vha->host_no, cp->device->channel,
1379 cp->device->id, cp->device->lun, comp_status, scsi_status,
1380 le16_to_cpu(sts->status_flags)));
1381
1382 /* Check to see if logout occurred. */
1383 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1384 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1385 break;
1386
1387 default:
1388 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1389 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1390 qla_printk(KERN_INFO, ha,
1391 "Unknown status detected 0x%x-0x%x.\n",
1392 comp_status, scsi_status);
1393
1394 cp->result = DID_ERROR << 16;
1395 break;
1396 }
1397
1398 /* Place command on done queue. */
1399 if (rsp->status_srb == NULL)
1400 qla2x00_sp_compl(ha, sp);
1401 }
1402
1403 /**
1404 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1405 * @ha: SCSI driver HA context
1406 * @pkt: Entry pointer
1407 *
1408 * Extended sense data.
1409 */
1410 static void
1411 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1412 {
1413 uint8_t sense_sz = 0;
1414 struct qla_hw_data *ha = rsp->hw;
1415 srb_t *sp = rsp->status_srb;
1416 struct scsi_cmnd *cp;
1417
1418 if (sp != NULL && sp->request_sense_length != 0) {
1419 cp = sp->cmd;
1420 if (cp == NULL) {
1421 DEBUG2(printk("%s(): Cmd already returned back to OS "
1422 "sp=%p.\n", __func__, sp));
1423 qla_printk(KERN_INFO, ha,
1424 "cmd is NULL: already returned to OS (sp=%p)\n",
1425 sp);
1426
1427 rsp->status_srb = NULL;
1428 return;
1429 }
1430
1431 if (sp->request_sense_length > sizeof(pkt->data)) {
1432 sense_sz = sizeof(pkt->data);
1433 } else {
1434 sense_sz = sp->request_sense_length;
1435 }
1436
1437 /* Move sense data. */
1438 if (IS_FWI2_CAPABLE(ha))
1439 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1440 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1441 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1442
1443 sp->request_sense_ptr += sense_sz;
1444 sp->request_sense_length -= sense_sz;
1445
1446 /* Place command on done queue. */
1447 if (sp->request_sense_length == 0) {
1448 rsp->status_srb = NULL;
1449 qla2x00_sp_compl(ha, sp);
1450 }
1451 }
1452 }
1453
1454 /**
1455 * qla2x00_error_entry() - Process an error entry.
1456 * @ha: SCSI driver HA context
1457 * @pkt: Entry pointer
1458 */
1459 static void
1460 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1461 {
1462 srb_t *sp;
1463 struct qla_hw_data *ha = vha->hw;
1464 uint32_t handle = LSW(pkt->handle);
1465 uint16_t que = MSW(pkt->handle);
1466 struct req_que *req = ha->req_q_map[que];
1467 #if defined(QL_DEBUG_LEVEL_2)
1468 if (pkt->entry_status & RF_INV_E_ORDER)
1469 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1470 else if (pkt->entry_status & RF_INV_E_COUNT)
1471 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1472 else if (pkt->entry_status & RF_INV_E_PARAM)
1473 qla_printk(KERN_ERR, ha,
1474 "%s: Invalid Entry Parameter\n", __func__);
1475 else if (pkt->entry_status & RF_INV_E_TYPE)
1476 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1477 else if (pkt->entry_status & RF_BUSY)
1478 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1479 else
1480 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1481 #endif
1482
1483 /* Validate handle. */
1484 if (handle < MAX_OUTSTANDING_COMMANDS)
1485 sp = req->outstanding_cmds[handle];
1486 else
1487 sp = NULL;
1488
1489 if (sp) {
1490 /* Free outstanding command slot. */
1491 req->outstanding_cmds[handle] = NULL;
1492
1493 /* Bad payload or header */
1494 if (pkt->entry_status &
1495 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1496 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1497 sp->cmd->result = DID_ERROR << 16;
1498 } else if (pkt->entry_status & RF_BUSY) {
1499 sp->cmd->result = DID_BUS_BUSY << 16;
1500 } else {
1501 sp->cmd->result = DID_ERROR << 16;
1502 }
1503 qla2x00_sp_compl(ha, sp);
1504
1505 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1506 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1507 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1508 vha->host_no));
1509 qla_printk(KERN_WARNING, ha,
1510 "Error entry - invalid handle\n");
1511
1512 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1513 qla2xxx_wake_dpc(vha);
1514 }
1515 }
1516
1517 /**
1518 * qla24xx_mbx_completion() - Process mailbox command completions.
1519 * @ha: SCSI driver HA context
1520 * @mb0: Mailbox0 register
1521 */
1522 static void
1523 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1524 {
1525 uint16_t cnt;
1526 uint16_t __iomem *wptr;
1527 struct qla_hw_data *ha = vha->hw;
1528 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1529
1530 /* Load return mailbox registers. */
1531 ha->flags.mbox_int = 1;
1532 ha->mailbox_out[0] = mb0;
1533 wptr = (uint16_t __iomem *)&reg->mailbox1;
1534
1535 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1536 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1537 wptr++;
1538 }
1539
1540 if (ha->mcp) {
1541 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1542 __func__, vha->host_no, ha->mcp->mb[0]));
1543 } else {
1544 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1545 __func__, vha->host_no));
1546 }
1547 }
1548
1549 /**
1550 * qla24xx_process_response_queue() - Process response queue entries.
1551 * @ha: SCSI driver HA context
1552 */
1553 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1554 struct rsp_que *rsp)
1555 {
1556 struct sts_entry_24xx *pkt;
1557
1558 if (!vha->flags.online)
1559 return;
1560
1561 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1562 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1563
1564 rsp->ring_index++;
1565 if (rsp->ring_index == rsp->length) {
1566 rsp->ring_index = 0;
1567 rsp->ring_ptr = rsp->ring;
1568 } else {
1569 rsp->ring_ptr++;
1570 }
1571
1572 if (pkt->entry_status != 0) {
1573 DEBUG3(printk(KERN_INFO
1574 "scsi(%ld): Process error entry.\n", vha->host_no));
1575
1576 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1577 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1578 wmb();
1579 continue;
1580 }
1581
1582 switch (pkt->entry_type) {
1583 case STATUS_TYPE:
1584 qla2x00_status_entry(vha, rsp, pkt);
1585 break;
1586 case STATUS_CONT_TYPE:
1587 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1588 break;
1589 case VP_RPT_ID_IOCB_TYPE:
1590 qla24xx_report_id_acquisition(vha,
1591 (struct vp_rpt_id_entry_24xx *)pkt);
1592 break;
1593 default:
1594 /* Type Not Supported. */
1595 DEBUG4(printk(KERN_WARNING
1596 "scsi(%ld): Received unknown response pkt type %x "
1597 "entry status=%x.\n",
1598 vha->host_no, pkt->entry_type, pkt->entry_status));
1599 break;
1600 }
1601 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1602 wmb();
1603 }
1604
1605 /* Adjust ring index */
1606 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1607 }
1608
1609 static void
1610 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1611 {
1612 int rval;
1613 uint32_t cnt;
1614 struct qla_hw_data *ha = vha->hw;
1615 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1616
1617 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1618 return;
1619
1620 rval = QLA_SUCCESS;
1621 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1622 RD_REG_DWORD(&reg->iobase_addr);
1623 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1624 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1625 rval == QLA_SUCCESS; cnt--) {
1626 if (cnt) {
1627 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1628 udelay(10);
1629 } else
1630 rval = QLA_FUNCTION_TIMEOUT;
1631 }
1632 if (rval == QLA_SUCCESS)
1633 goto next_test;
1634
1635 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1636 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1637 rval == QLA_SUCCESS; cnt--) {
1638 if (cnt) {
1639 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1640 udelay(10);
1641 } else
1642 rval = QLA_FUNCTION_TIMEOUT;
1643 }
1644 if (rval != QLA_SUCCESS)
1645 goto done;
1646
1647 next_test:
1648 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1649 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1650
1651 done:
1652 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1653 RD_REG_DWORD(&reg->iobase_window);
1654 }
1655
1656 /**
1657 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1658 * @irq:
1659 * @dev_id: SCSI driver HA context
1660 *
1661 * Called by system whenever the host adapter generates an interrupt.
1662 *
1663 * Returns handled flag.
1664 */
1665 irqreturn_t
1666 qla24xx_intr_handler(int irq, void *dev_id)
1667 {
1668 scsi_qla_host_t *vha;
1669 struct qla_hw_data *ha;
1670 struct device_reg_24xx __iomem *reg;
1671 int status;
1672 unsigned long iter;
1673 uint32_t stat;
1674 uint32_t hccr;
1675 uint16_t mb[4];
1676 struct rsp_que *rsp;
1677 unsigned long flags;
1678
1679 rsp = (struct rsp_que *) dev_id;
1680 if (!rsp) {
1681 printk(KERN_INFO
1682 "%s(): NULL response queue pointer\n", __func__);
1683 return IRQ_NONE;
1684 }
1685
1686 ha = rsp->hw;
1687 reg = &ha->iobase->isp24;
1688 status = 0;
1689
1690 spin_lock_irqsave(&ha->hardware_lock, flags);
1691 vha = pci_get_drvdata(ha->pdev);
1692 for (iter = 50; iter--; ) {
1693 stat = RD_REG_DWORD(&reg->host_status);
1694 if (stat & HSRX_RISC_PAUSED) {
1695 if (pci_channel_offline(ha->pdev))
1696 break;
1697
1698 hccr = RD_REG_DWORD(&reg->hccr);
1699
1700 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1701 "Dumping firmware!\n", hccr);
1702
1703 qla2xxx_check_risc_status(vha);
1704
1705 ha->isp_ops->fw_dump(vha, 1);
1706 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1707 break;
1708 } else if ((stat & HSRX_RISC_INT) == 0)
1709 break;
1710
1711 switch (stat & 0xff) {
1712 case 0x1:
1713 case 0x2:
1714 case 0x10:
1715 case 0x11:
1716 qla24xx_mbx_completion(vha, MSW(stat));
1717 status |= MBX_INTERRUPT;
1718
1719 break;
1720 case 0x12:
1721 mb[0] = MSW(stat);
1722 mb[1] = RD_REG_WORD(&reg->mailbox1);
1723 mb[2] = RD_REG_WORD(&reg->mailbox2);
1724 mb[3] = RD_REG_WORD(&reg->mailbox3);
1725 qla2x00_async_event(vha, rsp, mb);
1726 break;
1727 case 0x13:
1728 case 0x14:
1729 qla24xx_process_response_queue(vha, rsp);
1730 break;
1731 default:
1732 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1733 "(%d).\n",
1734 vha->host_no, stat & 0xff));
1735 break;
1736 }
1737 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1738 RD_REG_DWORD_RELAXED(&reg->hccr);
1739 }
1740 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1741
1742 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1743 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1744 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1745 complete(&ha->mbx_intr_comp);
1746 }
1747
1748 return IRQ_HANDLED;
1749 }
1750
1751 static irqreturn_t
1752 qla24xx_msix_rsp_q(int irq, void *dev_id)
1753 {
1754 struct qla_hw_data *ha;
1755 struct rsp_que *rsp;
1756 struct device_reg_24xx __iomem *reg;
1757 struct scsi_qla_host *vha;
1758
1759 rsp = (struct rsp_que *) dev_id;
1760 if (!rsp) {
1761 printk(KERN_INFO
1762 "%s(): NULL response queue pointer\n", __func__);
1763 return IRQ_NONE;
1764 }
1765 ha = rsp->hw;
1766 reg = &ha->iobase->isp24;
1767
1768 spin_lock_irq(&ha->hardware_lock);
1769
1770 vha = qla25xx_get_host(rsp);
1771 qla24xx_process_response_queue(vha, rsp);
1772 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1773
1774 spin_unlock_irq(&ha->hardware_lock);
1775
1776 return IRQ_HANDLED;
1777 }
1778
1779 static irqreturn_t
1780 qla25xx_msix_rsp_q(int irq, void *dev_id)
1781 {
1782 struct qla_hw_data *ha;
1783 struct rsp_que *rsp;
1784
1785 rsp = (struct rsp_que *) dev_id;
1786 if (!rsp) {
1787 printk(KERN_INFO
1788 "%s(): NULL response queue pointer\n", __func__);
1789 return IRQ_NONE;
1790 }
1791 ha = rsp->hw;
1792
1793 queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
1794
1795 return IRQ_HANDLED;
1796 }
1797
1798 static irqreturn_t
1799 qla24xx_msix_default(int irq, void *dev_id)
1800 {
1801 scsi_qla_host_t *vha;
1802 struct qla_hw_data *ha;
1803 struct rsp_que *rsp;
1804 struct device_reg_24xx __iomem *reg;
1805 int status;
1806 uint32_t stat;
1807 uint32_t hccr;
1808 uint16_t mb[4];
1809
1810 rsp = (struct rsp_que *) dev_id;
1811 if (!rsp) {
1812 DEBUG(printk(
1813 "%s(): NULL response queue pointer\n", __func__));
1814 return IRQ_NONE;
1815 }
1816 ha = rsp->hw;
1817 reg = &ha->iobase->isp24;
1818 status = 0;
1819
1820 spin_lock_irq(&ha->hardware_lock);
1821 vha = pci_get_drvdata(ha->pdev);
1822 do {
1823 stat = RD_REG_DWORD(&reg->host_status);
1824 if (stat & HSRX_RISC_PAUSED) {
1825 if (pci_channel_offline(ha->pdev))
1826 break;
1827
1828 hccr = RD_REG_DWORD(&reg->hccr);
1829
1830 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1831 "Dumping firmware!\n", hccr);
1832
1833 qla2xxx_check_risc_status(vha);
1834
1835 ha->isp_ops->fw_dump(vha, 1);
1836 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1837 break;
1838 } else if ((stat & HSRX_RISC_INT) == 0)
1839 break;
1840
1841 switch (stat & 0xff) {
1842 case 0x1:
1843 case 0x2:
1844 case 0x10:
1845 case 0x11:
1846 qla24xx_mbx_completion(vha, MSW(stat));
1847 status |= MBX_INTERRUPT;
1848
1849 break;
1850 case 0x12:
1851 mb[0] = MSW(stat);
1852 mb[1] = RD_REG_WORD(&reg->mailbox1);
1853 mb[2] = RD_REG_WORD(&reg->mailbox2);
1854 mb[3] = RD_REG_WORD(&reg->mailbox3);
1855 qla2x00_async_event(vha, rsp, mb);
1856 break;
1857 case 0x13:
1858 case 0x14:
1859 qla24xx_process_response_queue(vha, rsp);
1860 break;
1861 default:
1862 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1863 "(%d).\n",
1864 vha->host_no, stat & 0xff));
1865 break;
1866 }
1867 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1868 } while (0);
1869 spin_unlock_irq(&ha->hardware_lock);
1870
1871 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1872 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1873 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1874 complete(&ha->mbx_intr_comp);
1875 }
1876
1877 return IRQ_HANDLED;
1878 }
1879
1880 /* Interrupt handling helpers. */
1881
1882 struct qla_init_msix_entry {
1883 const char *name;
1884 irq_handler_t handler;
1885 };
1886
1887 static struct qla_init_msix_entry msix_entries[3] = {
1888 { "qla2xxx (default)", qla24xx_msix_default },
1889 { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
1890 { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
1891 };
1892
1893 static void
1894 qla24xx_disable_msix(struct qla_hw_data *ha)
1895 {
1896 int i;
1897 struct qla_msix_entry *qentry;
1898
1899 for (i = 0; i < ha->msix_count; i++) {
1900 qentry = &ha->msix_entries[i];
1901 if (qentry->have_irq)
1902 free_irq(qentry->vector, qentry->rsp);
1903 }
1904 pci_disable_msix(ha->pdev);
1905 kfree(ha->msix_entries);
1906 ha->msix_entries = NULL;
1907 ha->flags.msix_enabled = 0;
1908 }
1909
1910 static int
1911 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1912 {
1913 #define MIN_MSIX_COUNT 2
1914 int i, ret;
1915 struct msix_entry *entries;
1916 struct qla_msix_entry *qentry;
1917
1918 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
1919 GFP_KERNEL);
1920 if (!entries)
1921 return -ENOMEM;
1922
1923 for (i = 0; i < ha->msix_count; i++)
1924 entries[i].entry = i;
1925
1926 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1927 if (ret) {
1928 if (ret < MIN_MSIX_COUNT)
1929 goto msix_failed;
1930
1931 qla_printk(KERN_WARNING, ha,
1932 "MSI-X: Failed to enable support -- %d/%d\n"
1933 " Retry with %d vectors\n", ha->msix_count, ret, ret);
1934 ha->msix_count = ret;
1935 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1936 if (ret) {
1937 msix_failed:
1938 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
1939 " support, giving up -- %d/%d\n",
1940 ha->msix_count, ret);
1941 goto msix_out;
1942 }
1943 ha->max_rsp_queues = ha->msix_count - 1;
1944 }
1945 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
1946 ha->msix_count, GFP_KERNEL);
1947 if (!ha->msix_entries) {
1948 ret = -ENOMEM;
1949 goto msix_out;
1950 }
1951 ha->flags.msix_enabled = 1;
1952
1953 for (i = 0; i < ha->msix_count; i++) {
1954 qentry = &ha->msix_entries[i];
1955 qentry->vector = entries[i].vector;
1956 qentry->entry = entries[i].entry;
1957 qentry->have_irq = 0;
1958 qentry->rsp = NULL;
1959 }
1960
1961 /* Enable MSI-X vectors for the base queue */
1962 for (i = 0; i < 2; i++) {
1963 qentry = &ha->msix_entries[i];
1964 ret = request_irq(qentry->vector, msix_entries[i].handler,
1965 0, msix_entries[i].name, rsp);
1966 if (ret) {
1967 qla_printk(KERN_WARNING, ha,
1968 "MSI-X: Unable to register handler -- %x/%d.\n",
1969 qentry->vector, ret);
1970 qla24xx_disable_msix(ha);
1971 ha->mqenable = 0;
1972 goto msix_out;
1973 }
1974 qentry->have_irq = 1;
1975 qentry->rsp = rsp;
1976 rsp->msix = qentry;
1977 }
1978
1979 /* Enable MSI-X vector for response queue update for queue 0 */
1980 if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
1981 ha->mqenable = 1;
1982
1983 msix_out:
1984 kfree(entries);
1985 return ret;
1986 }
1987
1988 int
1989 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
1990 {
1991 int ret;
1992 device_reg_t __iomem *reg = ha->iobase;
1993
1994 /* If possible, enable MSI-X. */
1995 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
1996 !IS_QLA8432(ha) && !IS_QLA8001(ha))
1997 goto skip_msix;
1998
1999 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2000 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2001 DEBUG2(qla_printk(KERN_WARNING, ha,
2002 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2003 ha->pdev->revision, ha->fw_attributes));
2004
2005 goto skip_msix;
2006 }
2007
2008 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2009 (ha->pdev->subsystem_device == 0x7040 ||
2010 ha->pdev->subsystem_device == 0x7041 ||
2011 ha->pdev->subsystem_device == 0x1705)) {
2012 DEBUG2(qla_printk(KERN_WARNING, ha,
2013 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
2014 ha->pdev->subsystem_vendor,
2015 ha->pdev->subsystem_device));
2016
2017 goto skip_msi;
2018 }
2019
2020 ret = qla24xx_enable_msix(ha, rsp);
2021 if (!ret) {
2022 DEBUG2(qla_printk(KERN_INFO, ha,
2023 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2024 ha->fw_attributes));
2025 goto clear_risc_ints;
2026 }
2027 qla_printk(KERN_WARNING, ha,
2028 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2029 skip_msix:
2030
2031 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2032 !IS_QLA8001(ha))
2033 goto skip_msi;
2034
2035 ret = pci_enable_msi(ha->pdev);
2036 if (!ret) {
2037 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2038 ha->flags.msi_enabled = 1;
2039 }
2040 skip_msi:
2041
2042 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2043 IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2044 if (ret) {
2045 qla_printk(KERN_WARNING, ha,
2046 "Failed to reserve interrupt %d already in use.\n",
2047 ha->pdev->irq);
2048 goto fail;
2049 }
2050 ha->flags.inta_enabled = 1;
2051 clear_risc_ints:
2052
2053 /*
2054 * FIXME: Noted that 8014s were being dropped during NK testing.
2055 * Timing deltas during MSI-X/INTa transitions?
2056 */
2057 if (IS_QLA81XX(ha))
2058 goto fail;
2059 spin_lock_irq(&ha->hardware_lock);
2060 if (IS_FWI2_CAPABLE(ha)) {
2061 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2062 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2063 } else {
2064 WRT_REG_WORD(&reg->isp.semaphore, 0);
2065 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2066 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2067 }
2068 spin_unlock_irq(&ha->hardware_lock);
2069
2070 fail:
2071 return ret;
2072 }
2073
2074 void
2075 qla2x00_free_irqs(scsi_qla_host_t *vha)
2076 {
2077 struct qla_hw_data *ha = vha->hw;
2078 struct rsp_que *rsp = ha->rsp_q_map[0];
2079
2080 if (ha->flags.msix_enabled)
2081 qla24xx_disable_msix(ha);
2082 else if (ha->flags.inta_enabled) {
2083 free_irq(ha->pdev->irq, rsp);
2084 pci_disable_msi(ha->pdev);
2085 }
2086 }
2087
2088
2089 int qla25xx_request_irq(struct rsp_que *rsp)
2090 {
2091 struct qla_hw_data *ha = rsp->hw;
2092 struct qla_init_msix_entry *intr = &msix_entries[2];
2093 struct qla_msix_entry *msix = rsp->msix;
2094 int ret;
2095
2096 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2097 if (ret) {
2098 qla_printk(KERN_WARNING, ha,
2099 "MSI-X: Unable to register handler -- %x/%d.\n",
2100 msix->vector, ret);
2101 return ret;
2102 }
2103 msix->have_irq = 1;
2104 msix->rsp = rsp;
2105 return ret;
2106 }
2107
2108 struct scsi_qla_host *
2109 qla25xx_get_host(struct rsp_que *rsp)
2110 {
2111 srb_t *sp;
2112 struct qla_hw_data *ha = rsp->hw;
2113 struct scsi_qla_host *vha = NULL;
2114 struct sts_entry_24xx *pkt;
2115 struct req_que *req;
2116 uint16_t que;
2117 uint32_t handle;
2118
2119 pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2120 que = MSW(pkt->handle);
2121 handle = (uint32_t) LSW(pkt->handle);
2122 req = ha->req_q_map[que];
2123 if (handle < MAX_OUTSTANDING_COMMANDS) {
2124 sp = req->outstanding_cmds[handle];
2125 if (sp)
2126 return sp->fcport->vha;
2127 else
2128 goto base_que;
2129 }
2130 base_que:
2131 vha = pci_get_drvdata(ha->pdev);
2132 return vha;
2133 }
Linux kernel - Deliverables
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