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dm: do not forward ioctls from logical volumes to the underlying device
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / qla2xxx / qla_isr.c
blob4bd62d993153188ebd67abd94867d636d6475816
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 (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
689 break;
690
691 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
692 vha->host_no));
693 DEBUG(printk(KERN_INFO
694 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
695 vha->host_no, mb[1], mb[2], mb[3]));
696
697 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
698 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
699 | vha->d_id.b.al_pa;
700 if (rscn_entry == host_pid) {
701 DEBUG(printk(KERN_INFO
702 "scsi(%ld): Ignoring RSCN update to local host "
703 "port ID (%06x)\n",
704 vha->host_no, host_pid));
705 break;
706 }
707
708 /* Ignore reserved bits from RSCN-payload. */
709 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
710 rscn_queue_index = vha->rscn_in_ptr + 1;
711 if (rscn_queue_index == MAX_RSCN_COUNT)
712 rscn_queue_index = 0;
713 if (rscn_queue_index != vha->rscn_out_ptr) {
714 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
715 vha->rscn_in_ptr = rscn_queue_index;
716 } else {
717 vha->flags.rscn_queue_overflow = 1;
718 }
719
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 static srb_t *
923 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
924 struct req_que *req, void *iocb)
925 {
926 struct qla_hw_data *ha = vha->hw;
927 sts_entry_t *pkt = iocb;
928 srb_t *sp = NULL;
929 uint16_t index;
930
931 index = LSW(pkt->handle);
932 if (index >= MAX_OUTSTANDING_COMMANDS) {
933 qla_printk(KERN_WARNING, ha,
934 "%s: Invalid completion handle (%x).\n", func, index);
935 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
936 goto done;
937 }
938 sp = req->outstanding_cmds[index];
939 if (!sp) {
940 qla_printk(KERN_WARNING, ha,
941 "%s: Invalid completion handle (%x) -- timed-out.\n", func,
942 index);
943 return sp;
944 }
945 if (sp->handle != index) {
946 qla_printk(KERN_WARNING, ha,
947 "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
948 index);
949 return NULL;
950 }
951 req->outstanding_cmds[index] = NULL;
952 done:
953 return sp;
954 }
955
956 static void
957 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
958 struct mbx_entry *mbx)
959 {
960 const char func[] = "MBX-IOCB";
961 const char *type;
962 struct qla_hw_data *ha = vha->hw;
963 fc_port_t *fcport;
964 srb_t *sp;
965 struct srb_logio *lio;
966 uint16_t data[2];
967
968 sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
969 if (!sp)
970 return;
971
972 type = NULL;
973 lio = sp->ctx;
974 switch (lio->ctx.type) {
975 case SRB_LOGIN_CMD:
976 type = "login";
977 break;
978 case SRB_LOGOUT_CMD:
979 type = "logout";
980 break;
981 default:
982 qla_printk(KERN_WARNING, ha,
983 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
984 lio->ctx.type);
985 return;
986 }
987
988 del_timer(&lio->ctx.timer);
989 fcport = sp->fcport;
990
991 data[0] = data[1] = 0;
992 if (mbx->entry_status) {
993 DEBUG2(printk(KERN_WARNING
994 "scsi(%ld:%x): Async-%s error entry - entry-status=%x "
995 "status=%x state-flag=%x status-flags=%x.\n",
996 fcport->vha->host_no, sp->handle, type,
997 mbx->entry_status, le16_to_cpu(mbx->status),
998 le16_to_cpu(mbx->state_flags),
999 le16_to_cpu(mbx->status_flags)));
1000 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
1001
1002 data[0] = MBS_COMMAND_ERROR;
1003 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1004 QLA_LOGIO_LOGIN_RETRIED: 0;
1005 goto done_post_logio_done_work;
1006 }
1007
1008 if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1009 DEBUG2(printk(KERN_DEBUG
1010 "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
1011 fcport->vha->host_no, sp->handle, type,
1012 le16_to_cpu(mbx->mb1)));
1013
1014 data[0] = MBS_COMMAND_COMPLETE;
1015 if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1)
1016 fcport->flags |= FCF_FCP2_DEVICE;
1017
1018 goto done_post_logio_done_work;
1019 }
1020
1021 data[0] = le16_to_cpu(mbx->mb0);
1022 switch (data[0]) {
1023 case MBS_PORT_ID_USED:
1024 data[1] = le16_to_cpu(mbx->mb1);
1025 break;
1026 case MBS_LOOP_ID_USED:
1027 break;
1028 default:
1029 data[0] = MBS_COMMAND_ERROR;
1030 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1031 QLA_LOGIO_LOGIN_RETRIED: 0;
1032 break;
1033 }
1034
1035 DEBUG2(printk(KERN_WARNING
1036 "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
1037 "mb6=%x mb7=%x.\n",
1038 fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status),
1039 le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1040 le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1041 le16_to_cpu(mbx->mb7)));
1042
1043 done_post_logio_done_work:
1044 lio->ctx.type == SRB_LOGIN_CMD ?
1045 qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1046 qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1047
1048 lio->ctx.free(sp);
1049 }
1050
1051 static void
1052 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1053 struct logio_entry_24xx *logio)
1054 {
1055 const char func[] = "LOGIO-IOCB";
1056 const char *type;
1057 struct qla_hw_data *ha = vha->hw;
1058 fc_port_t *fcport;
1059 srb_t *sp;
1060 struct srb_logio *lio;
1061 uint16_t data[2];
1062 uint32_t iop[2];
1063
1064 sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1065 if (!sp)
1066 return;
1067
1068 type = NULL;
1069 lio = sp->ctx;
1070 switch (lio->ctx.type) {
1071 case SRB_LOGIN_CMD:
1072 type = "login";
1073 break;
1074 case SRB_LOGOUT_CMD:
1075 type = "logout";
1076 break;
1077 default:
1078 qla_printk(KERN_WARNING, ha,
1079 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1080 lio->ctx.type);
1081 return;
1082 }
1083
1084 del_timer(&lio->ctx.timer);
1085 fcport = sp->fcport;
1086
1087 data[0] = data[1] = 0;
1088 if (logio->entry_status) {
1089 DEBUG2(printk(KERN_WARNING
1090 "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
1091 fcport->vha->host_no, sp->handle, type,
1092 logio->entry_status));
1093 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1094
1095 data[0] = MBS_COMMAND_ERROR;
1096 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1097 QLA_LOGIO_LOGIN_RETRIED: 0;
1098 goto done_post_logio_done_work;
1099 }
1100
1101 if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1102 DEBUG2(printk(KERN_DEBUG
1103 "scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
1104 fcport->vha->host_no, sp->handle, type,
1105 le32_to_cpu(logio->io_parameter[0])));
1106
1107 data[0] = MBS_COMMAND_COMPLETE;
1108 if (lio->ctx.type == SRB_LOGOUT_CMD)
1109 goto done_post_logio_done_work;
1110
1111 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1112 if (iop[0] & BIT_4) {
1113 fcport->port_type = FCT_TARGET;
1114 if (iop[0] & BIT_8)
1115 fcport->flags |= FCF_FCP2_DEVICE;
1116 }
1117 if (iop[0] & BIT_5)
1118 fcport->port_type = FCT_INITIATOR;
1119 if (logio->io_parameter[7] || logio->io_parameter[8])
1120 fcport->supported_classes |= FC_COS_CLASS2;
1121 if (logio->io_parameter[9] || logio->io_parameter[10])
1122 fcport->supported_classes |= FC_COS_CLASS3;
1123
1124 goto done_post_logio_done_work;
1125 }
1126
1127 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1128 iop[1] = le32_to_cpu(logio->io_parameter[1]);
1129 switch (iop[0]) {
1130 case LSC_SCODE_PORTID_USED:
1131 data[0] = MBS_PORT_ID_USED;
1132 data[1] = LSW(iop[1]);
1133 break;
1134 case LSC_SCODE_NPORT_USED:
1135 data[0] = MBS_LOOP_ID_USED;
1136 break;
1137 case LSC_SCODE_CMD_FAILED:
1138 if ((iop[1] & 0xff) == 0x05) {
1139 data[0] = MBS_NOT_LOGGED_IN;
1140 break;
1141 }
1142 /* Fall through. */
1143 default:
1144 data[0] = MBS_COMMAND_ERROR;
1145 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1146 QLA_LOGIO_LOGIN_RETRIED: 0;
1147 break;
1148 }
1149
1150 DEBUG2(printk(KERN_WARNING
1151 "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
1152 fcport->vha->host_no, sp->handle, type,
1153 le16_to_cpu(logio->comp_status),
1154 le32_to_cpu(logio->io_parameter[0]),
1155 le32_to_cpu(logio->io_parameter[1])));
1156
1157 done_post_logio_done_work:
1158 lio->ctx.type == SRB_LOGIN_CMD ?
1159 qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1160 qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1161
1162 lio->ctx.free(sp);
1163 }
1164
1165 /**
1166 * qla2x00_process_response_queue() - Process response queue entries.
1167 * @ha: SCSI driver HA context
1168 */
1169 void
1170 qla2x00_process_response_queue(struct rsp_que *rsp)
1171 {
1172 struct scsi_qla_host *vha;
1173 struct qla_hw_data *ha = rsp->hw;
1174 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1175 sts_entry_t *pkt;
1176 uint16_t handle_cnt;
1177 uint16_t cnt;
1178
1179 vha = pci_get_drvdata(ha->pdev);
1180
1181 if (!vha->flags.online)
1182 return;
1183
1184 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1185 pkt = (sts_entry_t *)rsp->ring_ptr;
1186
1187 rsp->ring_index++;
1188 if (rsp->ring_index == rsp->length) {
1189 rsp->ring_index = 0;
1190 rsp->ring_ptr = rsp->ring;
1191 } else {
1192 rsp->ring_ptr++;
1193 }
1194
1195 if (pkt->entry_status != 0) {
1196 DEBUG3(printk(KERN_INFO
1197 "scsi(%ld): Process error entry.\n", vha->host_no));
1198
1199 qla2x00_error_entry(vha, rsp, pkt);
1200 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1201 wmb();
1202 continue;
1203 }
1204
1205 switch (pkt->entry_type) {
1206 case STATUS_TYPE:
1207 qla2x00_status_entry(vha, rsp, pkt);
1208 break;
1209 case STATUS_TYPE_21:
1210 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1211 for (cnt = 0; cnt < handle_cnt; cnt++) {
1212 qla2x00_process_completed_request(vha, rsp->req,
1213 ((sts21_entry_t *)pkt)->handle[cnt]);
1214 }
1215 break;
1216 case STATUS_TYPE_22:
1217 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1218 for (cnt = 0; cnt < handle_cnt; cnt++) {
1219 qla2x00_process_completed_request(vha, rsp->req,
1220 ((sts22_entry_t *)pkt)->handle[cnt]);
1221 }
1222 break;
1223 case STATUS_CONT_TYPE:
1224 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1225 break;
1226 case MBX_IOCB_TYPE:
1227 qla2x00_mbx_iocb_entry(vha, rsp->req,
1228 (struct mbx_entry *)pkt);
1229 default:
1230 /* Type Not Supported. */
1231 DEBUG4(printk(KERN_WARNING
1232 "scsi(%ld): Received unknown response pkt type %x "
1233 "entry status=%x.\n",
1234 vha->host_no, pkt->entry_type, pkt->entry_status));
1235 break;
1236 }
1237 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1238 wmb();
1239 }
1240
1241 /* Adjust ring index */
1242 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1243 }
1244
1245 static inline void
1246 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
1247 struct rsp_que *rsp)
1248 {
1249 struct scsi_cmnd *cp = sp->cmd;
1250
1251 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1252 sense_len = SCSI_SENSE_BUFFERSIZE;
1253
1254 sp->request_sense_length = sense_len;
1255 sp->request_sense_ptr = cp->sense_buffer;
1256 if (sp->request_sense_length > 32)
1257 sense_len = 32;
1258
1259 memcpy(cp->sense_buffer, sense_data, sense_len);
1260
1261 sp->request_sense_ptr += sense_len;
1262 sp->request_sense_length -= sense_len;
1263 if (sp->request_sense_length != 0)
1264 rsp->status_srb = sp;
1265
1266 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1267 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
1268 cp->device->channel, cp->device->id, cp->device->lun, cp,
1269 cp->serial_number));
1270 if (sense_len)
1271 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1272 }
1273
1274 /**
1275 * qla2x00_status_entry() - Process a Status IOCB entry.
1276 * @ha: SCSI driver HA context
1277 * @pkt: Entry pointer
1278 */
1279 static void
1280 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1281 {
1282 srb_t *sp;
1283 fc_port_t *fcport;
1284 struct scsi_cmnd *cp;
1285 sts_entry_t *sts;
1286 struct sts_entry_24xx *sts24;
1287 uint16_t comp_status;
1288 uint16_t scsi_status;
1289 uint8_t lscsi_status;
1290 int32_t resid;
1291 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
1292 uint8_t *rsp_info, *sense_data;
1293 struct qla_hw_data *ha = vha->hw;
1294 uint32_t handle;
1295 uint16_t que;
1296 struct req_que *req;
1297
1298 sts = (sts_entry_t *) pkt;
1299 sts24 = (struct sts_entry_24xx *) pkt;
1300 if (IS_FWI2_CAPABLE(ha)) {
1301 comp_status = le16_to_cpu(sts24->comp_status);
1302 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1303 } else {
1304 comp_status = le16_to_cpu(sts->comp_status);
1305 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1306 }
1307 handle = (uint32_t) LSW(sts->handle);
1308 que = MSW(sts->handle);
1309 req = ha->req_q_map[que];
1310 /* Fast path completion. */
1311 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1312 qla2x00_process_completed_request(vha, req, handle);
1313
1314 return;
1315 }
1316
1317 /* Validate handle. */
1318 if (handle < MAX_OUTSTANDING_COMMANDS) {
1319 sp = req->outstanding_cmds[handle];
1320 req->outstanding_cmds[handle] = NULL;
1321 } else
1322 sp = NULL;
1323
1324 if (sp == NULL) {
1325 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1326 vha->host_no));
1327 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1328
1329 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1330 qla2xxx_wake_dpc(vha);
1331 return;
1332 }
1333 cp = sp->cmd;
1334 if (cp == NULL) {
1335 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1336 "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
1337 qla_printk(KERN_WARNING, ha,
1338 "Command is NULL: already returned to OS (sp=%p)\n", sp);
1339
1340 return;
1341 }
1342
1343 lscsi_status = scsi_status & STATUS_MASK;
1344
1345 fcport = sp->fcport;
1346
1347 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1348 if (IS_FWI2_CAPABLE(ha)) {
1349 if (scsi_status & SS_SENSE_LEN_VALID)
1350 sense_len = le32_to_cpu(sts24->sense_len);
1351 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1352 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1353 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1354 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1355 if (comp_status == CS_DATA_UNDERRUN)
1356 fw_resid_len = le32_to_cpu(sts24->residual_len);
1357 rsp_info = sts24->data;
1358 sense_data = sts24->data;
1359 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1360 } else {
1361 if (scsi_status & SS_SENSE_LEN_VALID)
1362 sense_len = le16_to_cpu(sts->req_sense_length);
1363 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1364 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1365 resid_len = le32_to_cpu(sts->residual_length);
1366 rsp_info = sts->rsp_info;
1367 sense_data = sts->req_sense_data;
1368 }
1369
1370 /* Check for any FCP transport errors. */
1371 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1372 /* Sense data lies beyond any FCP RESPONSE data. */
1373 if (IS_FWI2_CAPABLE(ha))
1374 sense_data += rsp_info_len;
1375 if (rsp_info_len > 3 && rsp_info[3]) {
1376 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1377 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1378 "retrying command\n", vha->host_no,
1379 cp->device->channel, cp->device->id,
1380 cp->device->lun, rsp_info_len, rsp_info[0],
1381 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1382 rsp_info[5], rsp_info[6], rsp_info[7]));
1383
1384 cp->result = DID_BUS_BUSY << 16;
1385 qla2x00_sp_compl(ha, sp);
1386 return;
1387 }
1388 }
1389
1390 /* Check for overrun. */
1391 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1392 scsi_status & SS_RESIDUAL_OVER)
1393 comp_status = CS_DATA_OVERRUN;
1394
1395 /*
1396 * Based on Host and scsi status generate status code for Linux
1397 */
1398 switch (comp_status) {
1399 case CS_COMPLETE:
1400 case CS_QUEUE_FULL:
1401 if (scsi_status == 0) {
1402 cp->result = DID_OK << 16;
1403 break;
1404 }
1405 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1406 resid = resid_len;
1407 scsi_set_resid(cp, resid);
1408
1409 if (!lscsi_status &&
1410 ((unsigned)(scsi_bufflen(cp) - resid) <
1411 cp->underflow)) {
1412 qla_printk(KERN_INFO, ha,
1413 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1414 "detected (%x of %x bytes)...returning "
1415 "error status.\n", vha->host_no,
1416 cp->device->channel, cp->device->id,
1417 cp->device->lun, resid,
1418 scsi_bufflen(cp));
1419
1420 cp->result = DID_ERROR << 16;
1421 break;
1422 }
1423 }
1424 cp->result = DID_OK << 16 | lscsi_status;
1425
1426 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1427 DEBUG2(printk(KERN_INFO
1428 "scsi(%ld): QUEUE FULL status detected "
1429 "0x%x-0x%x.\n", vha->host_no, comp_status,
1430 scsi_status));
1431
1432 /* Adjust queue depth for all luns on the port. */
1433 if (!ql2xqfulltracking)
1434 break;
1435 fcport->last_queue_full = jiffies;
1436 starget_for_each_device(cp->device->sdev_target,
1437 fcport, qla2x00_adjust_sdev_qdepth_down);
1438 break;
1439 }
1440 if (lscsi_status != SS_CHECK_CONDITION)
1441 break;
1442
1443 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1444 if (!(scsi_status & SS_SENSE_LEN_VALID))
1445 break;
1446
1447 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1448 break;
1449
1450 case CS_DATA_UNDERRUN:
1451 DEBUG2(printk(KERN_INFO
1452 "scsi(%ld:%d:%d) UNDERRUN status detected 0x%x-0x%x. "
1453 "resid=0x%x fw_resid=0x%x cdb=0x%x os_underflow=0x%x\n",
1454 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1455 scsi_status, resid_len, fw_resid_len, cp->cmnd[0],
1456 cp->underflow));
1457
1458 /* Use F/W calculated residual length. */
1459 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1460 scsi_set_resid(cp, resid);
1461 if (scsi_status & SS_RESIDUAL_UNDER) {
1462 if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1463 DEBUG2(printk(
1464 "scsi(%ld:%d:%d:%d) Dropped frame(s) "
1465 "detected (%x of %x bytes)...residual "
1466 "length mismatch...retrying command.\n",
1467 vha->host_no, cp->device->channel,
1468 cp->device->id, cp->device->lun, resid,
1469 scsi_bufflen(cp)));
1470
1471 cp->result = DID_ERROR << 16 | lscsi_status;
1472 break;
1473 }
1474
1475 if (!lscsi_status &&
1476 ((unsigned)(scsi_bufflen(cp) - resid) <
1477 cp->underflow)) {
1478 qla_printk(KERN_INFO, ha,
1479 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1480 "detected (%x of %x bytes)...returning "
1481 "error status.\n", vha->host_no,
1482 cp->device->channel, cp->device->id,
1483 cp->device->lun, resid, scsi_bufflen(cp));
1484
1485 cp->result = DID_ERROR << 16;
1486 break;
1487 }
1488 } else if (!lscsi_status) {
1489 DEBUG2(printk(
1490 "scsi(%ld:%d:%d:%d) Dropped frame(s) detected "
1491 "(%x of %x bytes)...firmware reported underrun..."
1492 "retrying command.\n", vha->host_no,
1493 cp->device->channel, cp->device->id,
1494 cp->device->lun, resid, scsi_bufflen(cp)));
1495
1496 cp->result = DID_ERROR << 16;
1497 break;
1498 }
1499
1500 cp->result = DID_OK << 16 | lscsi_status;
1501
1502 /*
1503 * Check to see if SCSI Status is non zero. If so report SCSI
1504 * Status.
1505 */
1506 if (lscsi_status != 0) {
1507 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1508 DEBUG2(printk(KERN_INFO
1509 "scsi(%ld): QUEUE FULL status detected "
1510 "0x%x-0x%x.\n", vha->host_no, comp_status,
1511 scsi_status));
1512
1513 /*
1514 * Adjust queue depth for all luns on the
1515 * port.
1516 */
1517 if (!ql2xqfulltracking)
1518 break;
1519 fcport->last_queue_full = jiffies;
1520 starget_for_each_device(
1521 cp->device->sdev_target, fcport,
1522 qla2x00_adjust_sdev_qdepth_down);
1523 break;
1524 }
1525 if (lscsi_status != SS_CHECK_CONDITION)
1526 break;
1527
1528 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1529 if (!(scsi_status & SS_SENSE_LEN_VALID))
1530 break;
1531
1532 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1533 }
1534 break;
1535
1536 case CS_DATA_OVERRUN:
1537 DEBUG2(printk(KERN_INFO
1538 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1539 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1540 scsi_status));
1541 DEBUG2(printk(KERN_INFO
1542 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1543 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1544 cp->cmnd[4], cp->cmnd[5]));
1545 DEBUG2(printk(KERN_INFO
1546 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1547 "status!\n",
1548 cp->serial_number, scsi_bufflen(cp), resid_len));
1549
1550 cp->result = DID_ERROR << 16;
1551 break;
1552
1553 case CS_PORT_LOGGED_OUT:
1554 case CS_PORT_CONFIG_CHG:
1555 case CS_PORT_BUSY:
1556 case CS_INCOMPLETE:
1557 case CS_PORT_UNAVAILABLE:
1558 /*
1559 * If the port is in Target Down state, return all IOs for this
1560 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1561 * retry_queue.
1562 */
1563 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1564 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1565 vha->host_no, cp->device->id, cp->device->lun,
1566 cp->serial_number, comp_status,
1567 atomic_read(&fcport->state)));
1568
1569 /*
1570 * We are going to have the fc class block the rport
1571 * while we try to recover so instruct the mid layer
1572 * to requeue until the class decides how to handle this.
1573 */
1574 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1575 if (atomic_read(&fcport->state) == FCS_ONLINE)
1576 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1577 break;
1578
1579 case CS_RESET:
1580 DEBUG2(printk(KERN_INFO
1581 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1582 vha->host_no, comp_status, scsi_status));
1583
1584 cp->result = DID_RESET << 16;
1585 break;
1586
1587 case CS_ABORTED:
1588 /*
1589 * hv2.19.12 - DID_ABORT does not retry the request if we
1590 * aborted this request then abort otherwise it must be a
1591 * reset.
1592 */
1593 DEBUG2(printk(KERN_INFO
1594 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1595 vha->host_no, comp_status, scsi_status));
1596
1597 cp->result = DID_RESET << 16;
1598 break;
1599
1600 case CS_TIMEOUT:
1601 /*
1602 * We are going to have the fc class block the rport
1603 * while we try to recover so instruct the mid layer
1604 * to requeue until the class decides how to handle this.
1605 */
1606 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1607
1608 if (IS_FWI2_CAPABLE(ha)) {
1609 DEBUG2(printk(KERN_INFO
1610 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1611 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1612 cp->device->id, cp->device->lun, comp_status,
1613 scsi_status));
1614 break;
1615 }
1616 DEBUG2(printk(KERN_INFO
1617 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1618 "sflags=%x.\n", vha->host_no, cp->device->channel,
1619 cp->device->id, cp->device->lun, comp_status, scsi_status,
1620 le16_to_cpu(sts->status_flags)));
1621
1622 /* Check to see if logout occurred. */
1623 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1624 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1625 break;
1626
1627 default:
1628 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1629 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1630 qla_printk(KERN_INFO, ha,
1631 "Unknown status detected 0x%x-0x%x.\n",
1632 comp_status, scsi_status);
1633
1634 cp->result = DID_ERROR << 16;
1635 break;
1636 }
1637
1638 /* Place command on done queue. */
1639 if (rsp->status_srb == NULL)
1640 qla2x00_sp_compl(ha, sp);
1641 }
1642
1643 /**
1644 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1645 * @ha: SCSI driver HA context
1646 * @pkt: Entry pointer
1647 *
1648 * Extended sense data.
1649 */
1650 static void
1651 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1652 {
1653 uint8_t sense_sz = 0;
1654 struct qla_hw_data *ha = rsp->hw;
1655 srb_t *sp = rsp->status_srb;
1656 struct scsi_cmnd *cp;
1657
1658 if (sp != NULL && sp->request_sense_length != 0) {
1659 cp = sp->cmd;
1660 if (cp == NULL) {
1661 DEBUG2(printk("%s(): Cmd already returned back to OS "
1662 "sp=%p.\n", __func__, sp));
1663 qla_printk(KERN_INFO, ha,
1664 "cmd is NULL: already returned to OS (sp=%p)\n",
1665 sp);
1666
1667 rsp->status_srb = NULL;
1668 return;
1669 }
1670
1671 if (sp->request_sense_length > sizeof(pkt->data)) {
1672 sense_sz = sizeof(pkt->data);
1673 } else {
1674 sense_sz = sp->request_sense_length;
1675 }
1676
1677 /* Move sense data. */
1678 if (IS_FWI2_CAPABLE(ha))
1679 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1680 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1681 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1682
1683 sp->request_sense_ptr += sense_sz;
1684 sp->request_sense_length -= sense_sz;
1685
1686 /* Place command on done queue. */
1687 if (sp->request_sense_length == 0) {
1688 rsp->status_srb = NULL;
1689 qla2x00_sp_compl(ha, sp);
1690 }
1691 }
1692 }
1693
1694 /**
1695 * qla2x00_error_entry() - Process an error entry.
1696 * @ha: SCSI driver HA context
1697 * @pkt: Entry pointer
1698 */
1699 static void
1700 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1701 {
1702 srb_t *sp;
1703 struct qla_hw_data *ha = vha->hw;
1704 uint32_t handle = LSW(pkt->handle);
1705 uint16_t que = MSW(pkt->handle);
1706 struct req_que *req = ha->req_q_map[que];
1707 #if defined(QL_DEBUG_LEVEL_2)
1708 if (pkt->entry_status & RF_INV_E_ORDER)
1709 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1710 else if (pkt->entry_status & RF_INV_E_COUNT)
1711 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1712 else if (pkt->entry_status & RF_INV_E_PARAM)
1713 qla_printk(KERN_ERR, ha,
1714 "%s: Invalid Entry Parameter\n", __func__);
1715 else if (pkt->entry_status & RF_INV_E_TYPE)
1716 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1717 else if (pkt->entry_status & RF_BUSY)
1718 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1719 else
1720 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1721 #endif
1722
1723 /* Validate handle. */
1724 if (handle < MAX_OUTSTANDING_COMMANDS)
1725 sp = req->outstanding_cmds[handle];
1726 else
1727 sp = NULL;
1728
1729 if (sp) {
1730 /* Free outstanding command slot. */
1731 req->outstanding_cmds[handle] = NULL;
1732
1733 /* Bad payload or header */
1734 if (pkt->entry_status &
1735 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1736 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1737 sp->cmd->result = DID_ERROR << 16;
1738 } else if (pkt->entry_status & RF_BUSY) {
1739 sp->cmd->result = DID_BUS_BUSY << 16;
1740 } else {
1741 sp->cmd->result = DID_ERROR << 16;
1742 }
1743 qla2x00_sp_compl(ha, sp);
1744
1745 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1746 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1747 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1748 vha->host_no));
1749 qla_printk(KERN_WARNING, ha,
1750 "Error entry - invalid handle\n");
1751
1752 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1753 qla2xxx_wake_dpc(vha);
1754 }
1755 }
1756
1757 /**
1758 * qla24xx_mbx_completion() - Process mailbox command completions.
1759 * @ha: SCSI driver HA context
1760 * @mb0: Mailbox0 register
1761 */
1762 static void
1763 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1764 {
1765 uint16_t cnt;
1766 uint16_t __iomem *wptr;
1767 struct qla_hw_data *ha = vha->hw;
1768 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1769
1770 /* Load return mailbox registers. */
1771 ha->flags.mbox_int = 1;
1772 ha->mailbox_out[0] = mb0;
1773 wptr = (uint16_t __iomem *)&reg->mailbox1;
1774
1775 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1776 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1777 wptr++;
1778 }
1779
1780 if (ha->mcp) {
1781 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1782 __func__, vha->host_no, ha->mcp->mb[0]));
1783 } else {
1784 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1785 __func__, vha->host_no));
1786 }
1787 }
1788
1789 /**
1790 * qla24xx_process_response_queue() - Process response queue entries.
1791 * @ha: SCSI driver HA context
1792 */
1793 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1794 struct rsp_que *rsp)
1795 {
1796 struct sts_entry_24xx *pkt;
1797
1798 if (!vha->flags.online)
1799 return;
1800
1801 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1802 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1803
1804 rsp->ring_index++;
1805 if (rsp->ring_index == rsp->length) {
1806 rsp->ring_index = 0;
1807 rsp->ring_ptr = rsp->ring;
1808 } else {
1809 rsp->ring_ptr++;
1810 }
1811
1812 if (pkt->entry_status != 0) {
1813 DEBUG3(printk(KERN_INFO
1814 "scsi(%ld): Process error entry.\n", vha->host_no));
1815
1816 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1817 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1818 wmb();
1819 continue;
1820 }
1821
1822 switch (pkt->entry_type) {
1823 case STATUS_TYPE:
1824 qla2x00_status_entry(vha, rsp, pkt);
1825 break;
1826 case STATUS_CONT_TYPE:
1827 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1828 break;
1829 case VP_RPT_ID_IOCB_TYPE:
1830 qla24xx_report_id_acquisition(vha,
1831 (struct vp_rpt_id_entry_24xx *)pkt);
1832 break;
1833 case LOGINOUT_PORT_IOCB_TYPE:
1834 qla24xx_logio_entry(vha, rsp->req,
1835 (struct logio_entry_24xx *)pkt);
1836 break;
1837 default:
1838 /* Type Not Supported. */
1839 DEBUG4(printk(KERN_WARNING
1840 "scsi(%ld): Received unknown response pkt type %x "
1841 "entry status=%x.\n",
1842 vha->host_no, pkt->entry_type, pkt->entry_status));
1843 break;
1844 }
1845 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1846 wmb();
1847 }
1848
1849 /* Adjust ring index */
1850 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1851 }
1852
1853 static void
1854 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1855 {
1856 int rval;
1857 uint32_t cnt;
1858 struct qla_hw_data *ha = vha->hw;
1859 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1860
1861 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1862 return;
1863
1864 rval = QLA_SUCCESS;
1865 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1866 RD_REG_DWORD(&reg->iobase_addr);
1867 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1868 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1869 rval == QLA_SUCCESS; cnt--) {
1870 if (cnt) {
1871 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1872 udelay(10);
1873 } else
1874 rval = QLA_FUNCTION_TIMEOUT;
1875 }
1876 if (rval == QLA_SUCCESS)
1877 goto next_test;
1878
1879 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1880 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1881 rval == QLA_SUCCESS; cnt--) {
1882 if (cnt) {
1883 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1884 udelay(10);
1885 } else
1886 rval = QLA_FUNCTION_TIMEOUT;
1887 }
1888 if (rval != QLA_SUCCESS)
1889 goto done;
1890
1891 next_test:
1892 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1893 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1894
1895 done:
1896 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1897 RD_REG_DWORD(&reg->iobase_window);
1898 }
1899
1900 /**
1901 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1902 * @irq:
1903 * @dev_id: SCSI driver HA context
1904 *
1905 * Called by system whenever the host adapter generates an interrupt.
1906 *
1907 * Returns handled flag.
1908 */
1909 irqreturn_t
1910 qla24xx_intr_handler(int irq, void *dev_id)
1911 {
1912 scsi_qla_host_t *vha;
1913 struct qla_hw_data *ha;
1914 struct device_reg_24xx __iomem *reg;
1915 int status;
1916 unsigned long iter;
1917 uint32_t stat;
1918 uint32_t hccr;
1919 uint16_t mb[4];
1920 struct rsp_que *rsp;
1921 unsigned long flags;
1922
1923 rsp = (struct rsp_que *) dev_id;
1924 if (!rsp) {
1925 printk(KERN_INFO
1926 "%s(): NULL response queue pointer\n", __func__);
1927 return IRQ_NONE;
1928 }
1929
1930 ha = rsp->hw;
1931 reg = &ha->iobase->isp24;
1932 status = 0;
1933
1934 spin_lock_irqsave(&ha->hardware_lock, flags);
1935 vha = pci_get_drvdata(ha->pdev);
1936 for (iter = 50; iter--; ) {
1937 stat = RD_REG_DWORD(&reg->host_status);
1938 if (stat & HSRX_RISC_PAUSED) {
1939 if (pci_channel_offline(ha->pdev))
1940 break;
1941
1942 hccr = RD_REG_DWORD(&reg->hccr);
1943
1944 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1945 "Dumping firmware!\n", hccr);
1946
1947 qla2xxx_check_risc_status(vha);
1948
1949 ha->isp_ops->fw_dump(vha, 1);
1950 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1951 break;
1952 } else if ((stat & HSRX_RISC_INT) == 0)
1953 break;
1954
1955 switch (stat & 0xff) {
1956 case 0x1:
1957 case 0x2:
1958 case 0x10:
1959 case 0x11:
1960 qla24xx_mbx_completion(vha, MSW(stat));
1961 status |= MBX_INTERRUPT;
1962
1963 break;
1964 case 0x12:
1965 mb[0] = MSW(stat);
1966 mb[1] = RD_REG_WORD(&reg->mailbox1);
1967 mb[2] = RD_REG_WORD(&reg->mailbox2);
1968 mb[3] = RD_REG_WORD(&reg->mailbox3);
1969 qla2x00_async_event(vha, rsp, mb);
1970 break;
1971 case 0x13:
1972 case 0x14:
1973 qla24xx_process_response_queue(vha, rsp);
1974 break;
1975 default:
1976 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1977 "(%d).\n",
1978 vha->host_no, stat & 0xff));
1979 break;
1980 }
1981 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1982 RD_REG_DWORD_RELAXED(&reg->hccr);
1983 }
1984 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1985
1986 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1987 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1988 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1989 complete(&ha->mbx_intr_comp);
1990 }
1991
1992 return IRQ_HANDLED;
1993 }
1994
1995 static irqreturn_t
1996 qla24xx_msix_rsp_q(int irq, void *dev_id)
1997 {
1998 struct qla_hw_data *ha;
1999 struct rsp_que *rsp;
2000 struct device_reg_24xx __iomem *reg;
2001 struct scsi_qla_host *vha;
2002
2003 rsp = (struct rsp_que *) dev_id;
2004 if (!rsp) {
2005 printk(KERN_INFO
2006 "%s(): NULL response queue pointer\n", __func__);
2007 return IRQ_NONE;
2008 }
2009 ha = rsp->hw;
2010 reg = &ha->iobase->isp24;
2011
2012 spin_lock_irq(&ha->hardware_lock);
2013
2014 vha = pci_get_drvdata(ha->pdev);
2015 qla24xx_process_response_queue(vha, rsp);
2016 if (!ha->mqenable) {
2017 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2018 RD_REG_DWORD_RELAXED(&reg->hccr);
2019 }
2020 spin_unlock_irq(&ha->hardware_lock);
2021
2022 return IRQ_HANDLED;
2023 }
2024
2025 static irqreturn_t
2026 qla25xx_msix_rsp_q(int irq, void *dev_id)
2027 {
2028 struct qla_hw_data *ha;
2029 struct rsp_que *rsp;
2030
2031 rsp = (struct rsp_que *) dev_id;
2032 if (!rsp) {
2033 printk(KERN_INFO
2034 "%s(): NULL response queue pointer\n", __func__);
2035 return IRQ_NONE;
2036 }
2037 ha = rsp->hw;
2038
2039 queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2040
2041 return IRQ_HANDLED;
2042 }
2043
2044 static irqreturn_t
2045 qla24xx_msix_default(int irq, void *dev_id)
2046 {
2047 scsi_qla_host_t *vha;
2048 struct qla_hw_data *ha;
2049 struct rsp_que *rsp;
2050 struct device_reg_24xx __iomem *reg;
2051 int status;
2052 uint32_t stat;
2053 uint32_t hccr;
2054 uint16_t mb[4];
2055
2056 rsp = (struct rsp_que *) dev_id;
2057 if (!rsp) {
2058 DEBUG(printk(
2059 "%s(): NULL response queue pointer\n", __func__));
2060 return IRQ_NONE;
2061 }
2062 ha = rsp->hw;
2063 reg = &ha->iobase->isp24;
2064 status = 0;
2065
2066 spin_lock_irq(&ha->hardware_lock);
2067 vha = pci_get_drvdata(ha->pdev);
2068 do {
2069 stat = RD_REG_DWORD(&reg->host_status);
2070 if (stat & HSRX_RISC_PAUSED) {
2071 if (pci_channel_offline(ha->pdev))
2072 break;
2073
2074 hccr = RD_REG_DWORD(&reg->hccr);
2075
2076 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2077 "Dumping firmware!\n", hccr);
2078
2079 qla2xxx_check_risc_status(vha);
2080
2081 ha->isp_ops->fw_dump(vha, 1);
2082 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2083 break;
2084 } else if ((stat & HSRX_RISC_INT) == 0)
2085 break;
2086
2087 switch (stat & 0xff) {
2088 case 0x1:
2089 case 0x2:
2090 case 0x10:
2091 case 0x11:
2092 qla24xx_mbx_completion(vha, MSW(stat));
2093 status |= MBX_INTERRUPT;
2094
2095 break;
2096 case 0x12:
2097 mb[0] = MSW(stat);
2098 mb[1] = RD_REG_WORD(&reg->mailbox1);
2099 mb[2] = RD_REG_WORD(&reg->mailbox2);
2100 mb[3] = RD_REG_WORD(&reg->mailbox3);
2101 qla2x00_async_event(vha, rsp, mb);
2102 break;
2103 case 0x13:
2104 case 0x14:
2105 qla24xx_process_response_queue(vha, rsp);
2106 break;
2107 default:
2108 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2109 "(%d).\n",
2110 vha->host_no, stat & 0xff));
2111 break;
2112 }
2113 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2114 } while (0);
2115 spin_unlock_irq(&ha->hardware_lock);
2116
2117 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2118 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2119 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2120 complete(&ha->mbx_intr_comp);
2121 }
2122
2123 return IRQ_HANDLED;
2124 }
2125
2126 /* Interrupt handling helpers. */
2127
2128 struct qla_init_msix_entry {
2129 const char *name;
2130 irq_handler_t handler;
2131 };
2132
2133 static struct qla_init_msix_entry msix_entries[3] = {
2134 { "qla2xxx (default)", qla24xx_msix_default },
2135 { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2136 { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2137 };
2138
2139 static void
2140 qla24xx_disable_msix(struct qla_hw_data *ha)
2141 {
2142 int i;
2143 struct qla_msix_entry *qentry;
2144
2145 for (i = 0; i < ha->msix_count; i++) {
2146 qentry = &ha->msix_entries[i];
2147 if (qentry->have_irq)
2148 free_irq(qentry->vector, qentry->rsp);
2149 }
2150 pci_disable_msix(ha->pdev);
2151 kfree(ha->msix_entries);
2152 ha->msix_entries = NULL;
2153 ha->flags.msix_enabled = 0;
2154 }
2155
2156 static int
2157 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2158 {
2159 #define MIN_MSIX_COUNT 2
2160 int i, ret;
2161 struct msix_entry *entries;
2162 struct qla_msix_entry *qentry;
2163
2164 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2165 GFP_KERNEL);
2166 if (!entries)
2167 return -ENOMEM;
2168
2169 for (i = 0; i < ha->msix_count; i++)
2170 entries[i].entry = i;
2171
2172 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2173 if (ret) {
2174 if (ret < MIN_MSIX_COUNT)
2175 goto msix_failed;
2176
2177 qla_printk(KERN_WARNING, ha,
2178 "MSI-X: Failed to enable support -- %d/%d\n"
2179 " Retry with %d vectors\n", ha->msix_count, ret, ret);
2180 ha->msix_count = ret;
2181 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2182 if (ret) {
2183 msix_failed:
2184 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2185 " support, giving up -- %d/%d\n",
2186 ha->msix_count, ret);
2187 goto msix_out;
2188 }
2189 ha->max_rsp_queues = ha->msix_count - 1;
2190 }
2191 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2192 ha->msix_count, GFP_KERNEL);
2193 if (!ha->msix_entries) {
2194 ret = -ENOMEM;
2195 goto msix_out;
2196 }
2197 ha->flags.msix_enabled = 1;
2198
2199 for (i = 0; i < ha->msix_count; i++) {
2200 qentry = &ha->msix_entries[i];
2201 qentry->vector = entries[i].vector;
2202 qentry->entry = entries[i].entry;
2203 qentry->have_irq = 0;
2204 qentry->rsp = NULL;
2205 }
2206
2207 /* Enable MSI-X vectors for the base queue */
2208 for (i = 0; i < 2; i++) {
2209 qentry = &ha->msix_entries[i];
2210 ret = request_irq(qentry->vector, msix_entries[i].handler,
2211 0, msix_entries[i].name, rsp);
2212 if (ret) {
2213 qla_printk(KERN_WARNING, ha,
2214 "MSI-X: Unable to register handler -- %x/%d.\n",
2215 qentry->vector, ret);
2216 qla24xx_disable_msix(ha);
2217 ha->mqenable = 0;
2218 goto msix_out;
2219 }
2220 qentry->have_irq = 1;
2221 qentry->rsp = rsp;
2222 rsp->msix = qentry;
2223 }
2224
2225 /* Enable MSI-X vector for response queue update for queue 0 */
2226 if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2227 ha->mqenable = 1;
2228
2229 msix_out:
2230 kfree(entries);
2231 return ret;
2232 }
2233
2234 int
2235 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2236 {
2237 int ret;
2238 device_reg_t __iomem *reg = ha->iobase;
2239
2240 /* If possible, enable MSI-X. */
2241 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2242 !IS_QLA8432(ha) && !IS_QLA8001(ha))
2243 goto skip_msi;
2244
2245 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2246 (ha->pdev->subsystem_device == 0x7040 ||
2247 ha->pdev->subsystem_device == 0x7041 ||
2248 ha->pdev->subsystem_device == 0x1705)) {
2249 DEBUG2(qla_printk(KERN_WARNING, ha,
2250 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
2251 ha->pdev->subsystem_vendor,
2252 ha->pdev->subsystem_device));
2253 goto skip_msi;
2254 }
2255
2256 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2257 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2258 DEBUG2(qla_printk(KERN_WARNING, ha,
2259 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2260 ha->pdev->revision, ha->fw_attributes));
2261 goto skip_msix;
2262 }
2263
2264 ret = qla24xx_enable_msix(ha, rsp);
2265 if (!ret) {
2266 DEBUG2(qla_printk(KERN_INFO, ha,
2267 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2268 ha->fw_attributes));
2269 goto clear_risc_ints;
2270 }
2271 qla_printk(KERN_WARNING, ha,
2272 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2273 skip_msix:
2274
2275 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2276 !IS_QLA8001(ha))
2277 goto skip_msi;
2278
2279 ret = pci_enable_msi(ha->pdev);
2280 if (!ret) {
2281 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2282 ha->flags.msi_enabled = 1;
2283 }
2284 skip_msi:
2285
2286 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2287 IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2288 if (ret) {
2289 qla_printk(KERN_WARNING, ha,
2290 "Failed to reserve interrupt %d already in use.\n",
2291 ha->pdev->irq);
2292 goto fail;
2293 }
2294 ha->flags.inta_enabled = 1;
2295 clear_risc_ints:
2296
2297 /*
2298 * FIXME: Noted that 8014s were being dropped during NK testing.
2299 * Timing deltas during MSI-X/INTa transitions?
2300 */
2301 if (IS_QLA81XX(ha))
2302 goto fail;
2303 spin_lock_irq(&ha->hardware_lock);
2304 if (IS_FWI2_CAPABLE(ha)) {
2305 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2306 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2307 } else {
2308 WRT_REG_WORD(&reg->isp.semaphore, 0);
2309 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2310 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2311 }
2312 spin_unlock_irq(&ha->hardware_lock);
2313
2314 fail:
2315 return ret;
2316 }
2317
2318 void
2319 qla2x00_free_irqs(scsi_qla_host_t *vha)
2320 {
2321 struct qla_hw_data *ha = vha->hw;
2322 struct rsp_que *rsp = ha->rsp_q_map[0];
2323
2324 if (ha->flags.msix_enabled)
2325 qla24xx_disable_msix(ha);
2326 else if (ha->flags.inta_enabled) {
2327 free_irq(ha->pdev->irq, rsp);
2328 pci_disable_msi(ha->pdev);
2329 }
2330 }
2331
2332
2333 int qla25xx_request_irq(struct rsp_que *rsp)
2334 {
2335 struct qla_hw_data *ha = rsp->hw;
2336 struct qla_init_msix_entry *intr = &msix_entries[2];
2337 struct qla_msix_entry *msix = rsp->msix;
2338 int ret;
2339
2340 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2341 if (ret) {
2342 qla_printk(KERN_WARNING, ha,
2343 "MSI-X: Unable to register handler -- %x/%d.\n",
2344 msix->vector, ret);
2345 return ret;
2346 }
2347 msix->have_irq = 1;
2348 msix->rsp = rsp;
2349 return ret;
2350 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree