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PM: OMAP3: Removed a couple of unused variables from DVFS code
[linux-ginger.git] / drivers / scsi / qla2xxx / qla_isr.c
blobb20a7169aac28990a2debb7670716668b9815d37
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_state, LOOP_UPDATE);
721 atomic_set(&vha->loop_down_timer, 0);
722 vha->flags.management_server_logged_in = 0;
723
724 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
725 set_bit(RSCN_UPDATE, &vha->dpc_flags);
726 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
727 break;
728
729 /* case MBA_RIO_RESPONSE: */
730 case MBA_ZIO_RESPONSE:
731 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
732 vha->host_no));
733
734 if (IS_FWI2_CAPABLE(ha))
735 qla24xx_process_response_queue(vha, rsp);
736 else
737 qla2x00_process_response_queue(rsp);
738 break;
739
740 case MBA_DISCARD_RND_FRAME:
741 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
742 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
743 break;
744
745 case MBA_TRACE_NOTIFICATION:
746 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
747 vha->host_no, mb[1], mb[2]));
748 break;
749
750 case MBA_ISP84XX_ALERT:
751 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
752 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
753
754 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
755 switch (mb[1]) {
756 case A84_PANIC_RECOVERY:
757 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
758 "%04x %04x\n", mb[2], mb[3]);
759 break;
760 case A84_OP_LOGIN_COMPLETE:
761 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
762 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
763 "firmware version %x\n", ha->cs84xx->op_fw_version));
764 break;
765 case A84_DIAG_LOGIN_COMPLETE:
766 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
767 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
768 "diagnostic firmware version %x\n",
769 ha->cs84xx->diag_fw_version));
770 break;
771 case A84_GOLD_LOGIN_COMPLETE:
772 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
773 ha->cs84xx->fw_update = 1;
774 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
775 "firmware version %x\n",
776 ha->cs84xx->gold_fw_version));
777 break;
778 default:
779 qla_printk(KERN_ERR, ha,
780 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
781 mb[1], mb[2], mb[3]);
782 }
783 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
784 break;
785 case MBA_DCBX_START:
786 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
787 vha->host_no, mb[1], mb[2], mb[3]));
788 break;
789 case MBA_DCBX_PARAM_UPDATE:
790 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
791 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
792 break;
793 case MBA_FCF_CONF_ERR:
794 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
795 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
796 break;
797 case MBA_IDC_COMPLETE:
798 case MBA_IDC_NOTIFY:
799 case MBA_IDC_TIME_EXT:
800 qla81xx_idc_event(vha, mb[0], mb[1]);
801 break;
802 }
803
804 if (!vha->vp_idx && ha->num_vhosts)
805 qla2x00_alert_all_vps(rsp, mb);
806 }
807
808 static void
809 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
810 {
811 fc_port_t *fcport = data;
812 struct scsi_qla_host *vha = fcport->vha;
813 struct qla_hw_data *ha = vha->hw;
814 struct req_que *req = NULL;
815
816 if (!ql2xqfulltracking)
817 return;
818
819 req = vha->req;
820 if (!req)
821 return;
822 if (req->max_q_depth <= sdev->queue_depth)
823 return;
824
825 if (sdev->ordered_tags)
826 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
827 sdev->queue_depth + 1);
828 else
829 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
830 sdev->queue_depth + 1);
831
832 fcport->last_ramp_up = jiffies;
833
834 DEBUG2(qla_printk(KERN_INFO, ha,
835 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
836 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
837 sdev->queue_depth));
838 }
839
840 static void
841 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
842 {
843 fc_port_t *fcport = data;
844
845 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
846 return;
847
848 DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
849 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
850 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
851 sdev->queue_depth));
852 }
853
854 static inline void
855 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
856 srb_t *sp)
857 {
858 fc_port_t *fcport;
859 struct scsi_device *sdev;
860
861 if (!ql2xqfulltracking)
862 return;
863
864 sdev = sp->cmd->device;
865 if (sdev->queue_depth >= req->max_q_depth)
866 return;
867
868 fcport = sp->fcport;
869 if (time_before(jiffies,
870 fcport->last_ramp_up + ql2xqfullrampup * HZ))
871 return;
872 if (time_before(jiffies,
873 fcport->last_queue_full + ql2xqfullrampup * HZ))
874 return;
875
876 starget_for_each_device(sdev->sdev_target, fcport,
877 qla2x00_adjust_sdev_qdepth_up);
878 }
879
880 /**
881 * qla2x00_process_completed_request() - Process a Fast Post response.
882 * @ha: SCSI driver HA context
883 * @index: SRB index
884 */
885 static void
886 qla2x00_process_completed_request(struct scsi_qla_host *vha,
887 struct req_que *req, uint32_t index)
888 {
889 srb_t *sp;
890 struct qla_hw_data *ha = vha->hw;
891
892 /* Validate handle. */
893 if (index >= MAX_OUTSTANDING_COMMANDS) {
894 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
895 vha->host_no, index));
896 qla_printk(KERN_WARNING, ha,
897 "Invalid SCSI completion handle %d.\n", index);
898
899 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
900 return;
901 }
902
903 sp = req->outstanding_cmds[index];
904 if (sp) {
905 /* Free outstanding command slot. */
906 req->outstanding_cmds[index] = NULL;
907
908 /* Save ISP completion status */
909 sp->cmd->result = DID_OK << 16;
910
911 qla2x00_ramp_up_queue_depth(vha, req, sp);
912 qla2x00_sp_compl(ha, sp);
913 } else {
914 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
915 " handle(%d)\n", vha->host_no, req->id, index));
916 qla_printk(KERN_WARNING, ha,
917 "Invalid ISP SCSI completion handle\n");
918
919 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
920 }
921 }
922
923 static srb_t *
924 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
925 struct req_que *req, void *iocb)
926 {
927 struct qla_hw_data *ha = vha->hw;
928 sts_entry_t *pkt = iocb;
929 srb_t *sp = NULL;
930 uint16_t index;
931
932 index = LSW(pkt->handle);
933 if (index >= MAX_OUTSTANDING_COMMANDS) {
934 qla_printk(KERN_WARNING, ha,
935 "%s: Invalid completion handle (%x).\n", func, index);
936 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
937 goto done;
938 }
939 sp = req->outstanding_cmds[index];
940 if (!sp) {
941 qla_printk(KERN_WARNING, ha,
942 "%s: Invalid completion handle (%x) -- timed-out.\n", func,
943 index);
944 return sp;
945 }
946 if (sp->handle != index) {
947 qla_printk(KERN_WARNING, ha,
948 "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
949 index);
950 return NULL;
951 }
952 req->outstanding_cmds[index] = NULL;
953 done:
954 return sp;
955 }
956
957 static void
958 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
959 struct mbx_entry *mbx)
960 {
961 const char func[] = "MBX-IOCB";
962 const char *type;
963 struct qla_hw_data *ha = vha->hw;
964 fc_port_t *fcport;
965 srb_t *sp;
966 struct srb_logio *lio;
967 uint16_t data[2];
968
969 sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
970 if (!sp)
971 return;
972
973 type = NULL;
974 lio = sp->ctx;
975 switch (lio->ctx.type) {
976 case SRB_LOGIN_CMD:
977 type = "login";
978 break;
979 case SRB_LOGOUT_CMD:
980 type = "logout";
981 break;
982 default:
983 qla_printk(KERN_WARNING, ha,
984 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
985 lio->ctx.type);
986 return;
987 }
988
989 del_timer(&lio->ctx.timer);
990 fcport = sp->fcport;
991
992 data[0] = data[1] = 0;
993 if (mbx->entry_status) {
994 DEBUG2(printk(KERN_WARNING
995 "scsi(%ld:%x): Async-%s error entry - entry-status=%x "
996 "status=%x state-flag=%x status-flags=%x.\n",
997 fcport->vha->host_no, sp->handle, type,
998 mbx->entry_status, le16_to_cpu(mbx->status),
999 le16_to_cpu(mbx->state_flags),
1000 le16_to_cpu(mbx->status_flags)));
1001 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
1002
1003 data[0] = MBS_COMMAND_ERROR;
1004 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1005 QLA_LOGIO_LOGIN_RETRIED: 0;
1006 goto done_post_logio_done_work;
1007 }
1008
1009 if (!mbx->status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
1010 DEBUG2(printk(KERN_DEBUG
1011 "scsi(%ld:%x): Async-%s complete - mbx1=%x.\n",
1012 fcport->vha->host_no, sp->handle, type,
1013 le16_to_cpu(mbx->mb1)));
1014
1015 data[0] = MBS_COMMAND_COMPLETE;
1016 if (lio->ctx.type == SRB_LOGIN_CMD && le16_to_cpu(mbx->mb1) & BIT_1)
1017 fcport->flags |= FCF_FCP2_DEVICE;
1018
1019 goto done_post_logio_done_work;
1020 }
1021
1022 data[0] = le16_to_cpu(mbx->mb0);
1023 switch (data[0]) {
1024 case MBS_PORT_ID_USED:
1025 data[1] = le16_to_cpu(mbx->mb1);
1026 break;
1027 case MBS_LOOP_ID_USED:
1028 break;
1029 default:
1030 data[0] = MBS_COMMAND_ERROR;
1031 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1032 QLA_LOGIO_LOGIN_RETRIED: 0;
1033 break;
1034 }
1035
1036 DEBUG2(printk(KERN_WARNING
1037 "scsi(%ld:%x): Async-%s failed - status=%x mb0=%x mb1=%x mb2=%x "
1038 "mb6=%x mb7=%x.\n",
1039 fcport->vha->host_no, sp->handle, type, le16_to_cpu(mbx->status),
1040 le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
1041 le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
1042 le16_to_cpu(mbx->mb7)));
1043
1044 done_post_logio_done_work:
1045 lio->ctx.type == SRB_LOGIN_CMD ?
1046 qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1047 qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1048
1049 lio->ctx.free(sp);
1050 }
1051
1052 static void
1053 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1054 struct logio_entry_24xx *logio)
1055 {
1056 const char func[] = "LOGIO-IOCB";
1057 const char *type;
1058 struct qla_hw_data *ha = vha->hw;
1059 fc_port_t *fcport;
1060 srb_t *sp;
1061 struct srb_logio *lio;
1062 uint16_t data[2];
1063 uint32_t iop[2];
1064
1065 sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1066 if (!sp)
1067 return;
1068
1069 type = NULL;
1070 lio = sp->ctx;
1071 switch (lio->ctx.type) {
1072 case SRB_LOGIN_CMD:
1073 type = "login";
1074 break;
1075 case SRB_LOGOUT_CMD:
1076 type = "logout";
1077 break;
1078 default:
1079 qla_printk(KERN_WARNING, ha,
1080 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1081 lio->ctx.type);
1082 return;
1083 }
1084
1085 del_timer(&lio->ctx.timer);
1086 fcport = sp->fcport;
1087
1088 data[0] = data[1] = 0;
1089 if (logio->entry_status) {
1090 DEBUG2(printk(KERN_WARNING
1091 "scsi(%ld:%x): Async-%s error entry - entry-status=%x.\n",
1092 fcport->vha->host_no, sp->handle, type,
1093 logio->entry_status));
1094 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1095
1096 data[0] = MBS_COMMAND_ERROR;
1097 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1098 QLA_LOGIO_LOGIN_RETRIED: 0;
1099 goto done_post_logio_done_work;
1100 }
1101
1102 if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1103 DEBUG2(printk(KERN_DEBUG
1104 "scsi(%ld:%x): Async-%s complete - iop0=%x.\n",
1105 fcport->vha->host_no, sp->handle, type,
1106 le32_to_cpu(logio->io_parameter[0])));
1107
1108 data[0] = MBS_COMMAND_COMPLETE;
1109 if (lio->ctx.type == SRB_LOGOUT_CMD)
1110 goto done_post_logio_done_work;
1111
1112 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1113 if (iop[0] & BIT_4) {
1114 fcport->port_type = FCT_TARGET;
1115 if (iop[0] & BIT_8)
1116 fcport->flags |= FCF_FCP2_DEVICE;
1117 }
1118 if (iop[0] & BIT_5)
1119 fcport->port_type = FCT_INITIATOR;
1120 if (logio->io_parameter[7] || logio->io_parameter[8])
1121 fcport->supported_classes |= FC_COS_CLASS2;
1122 if (logio->io_parameter[9] || logio->io_parameter[10])
1123 fcport->supported_classes |= FC_COS_CLASS3;
1124
1125 goto done_post_logio_done_work;
1126 }
1127
1128 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1129 iop[1] = le32_to_cpu(logio->io_parameter[1]);
1130 switch (iop[0]) {
1131 case LSC_SCODE_PORTID_USED:
1132 data[0] = MBS_PORT_ID_USED;
1133 data[1] = LSW(iop[1]);
1134 break;
1135 case LSC_SCODE_NPORT_USED:
1136 data[0] = MBS_LOOP_ID_USED;
1137 break;
1138 case LSC_SCODE_CMD_FAILED:
1139 if ((iop[1] & 0xff) == 0x05) {
1140 data[0] = MBS_NOT_LOGGED_IN;
1141 break;
1142 }
1143 /* Fall through. */
1144 default:
1145 data[0] = MBS_COMMAND_ERROR;
1146 data[1] = lio->flags & SRB_LOGIN_RETRIED ?
1147 QLA_LOGIO_LOGIN_RETRIED: 0;
1148 break;
1149 }
1150
1151 DEBUG2(printk(KERN_WARNING
1152 "scsi(%ld:%x): Async-%s failed - comp=%x iop0=%x iop1=%x.\n",
1153 fcport->vha->host_no, sp->handle, type,
1154 le16_to_cpu(logio->comp_status),
1155 le32_to_cpu(logio->io_parameter[0]),
1156 le32_to_cpu(logio->io_parameter[1])));
1157
1158 done_post_logio_done_work:
1159 lio->ctx.type == SRB_LOGIN_CMD ?
1160 qla2x00_post_async_login_done_work(fcport->vha, fcport, data):
1161 qla2x00_post_async_logout_done_work(fcport->vha, fcport, data);
1162
1163 lio->ctx.free(sp);
1164 }
1165
1166 /**
1167 * qla2x00_process_response_queue() - Process response queue entries.
1168 * @ha: SCSI driver HA context
1169 */
1170 void
1171 qla2x00_process_response_queue(struct rsp_que *rsp)
1172 {
1173 struct scsi_qla_host *vha;
1174 struct qla_hw_data *ha = rsp->hw;
1175 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1176 sts_entry_t *pkt;
1177 uint16_t handle_cnt;
1178 uint16_t cnt;
1179
1180 vha = pci_get_drvdata(ha->pdev);
1181
1182 if (!vha->flags.online)
1183 return;
1184
1185 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1186 pkt = (sts_entry_t *)rsp->ring_ptr;
1187
1188 rsp->ring_index++;
1189 if (rsp->ring_index == rsp->length) {
1190 rsp->ring_index = 0;
1191 rsp->ring_ptr = rsp->ring;
1192 } else {
1193 rsp->ring_ptr++;
1194 }
1195
1196 if (pkt->entry_status != 0) {
1197 DEBUG3(printk(KERN_INFO
1198 "scsi(%ld): Process error entry.\n", vha->host_no));
1199
1200 qla2x00_error_entry(vha, rsp, pkt);
1201 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1202 wmb();
1203 continue;
1204 }
1205
1206 switch (pkt->entry_type) {
1207 case STATUS_TYPE:
1208 qla2x00_status_entry(vha, rsp, pkt);
1209 break;
1210 case STATUS_TYPE_21:
1211 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1212 for (cnt = 0; cnt < handle_cnt; cnt++) {
1213 qla2x00_process_completed_request(vha, rsp->req,
1214 ((sts21_entry_t *)pkt)->handle[cnt]);
1215 }
1216 break;
1217 case STATUS_TYPE_22:
1218 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1219 for (cnt = 0; cnt < handle_cnt; cnt++) {
1220 qla2x00_process_completed_request(vha, rsp->req,
1221 ((sts22_entry_t *)pkt)->handle[cnt]);
1222 }
1223 break;
1224 case STATUS_CONT_TYPE:
1225 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1226 break;
1227 case MBX_IOCB_TYPE:
1228 qla2x00_mbx_iocb_entry(vha, rsp->req,
1229 (struct mbx_entry *)pkt);
1230 default:
1231 /* Type Not Supported. */
1232 DEBUG4(printk(KERN_WARNING
1233 "scsi(%ld): Received unknown response pkt type %x "
1234 "entry status=%x.\n",
1235 vha->host_no, pkt->entry_type, pkt->entry_status));
1236 break;
1237 }
1238 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1239 wmb();
1240 }
1241
1242 /* Adjust ring index */
1243 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1244 }
1245
1246 static inline void
1247 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len,
1248 struct rsp_que *rsp)
1249 {
1250 struct scsi_cmnd *cp = sp->cmd;
1251
1252 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1253 sense_len = SCSI_SENSE_BUFFERSIZE;
1254
1255 sp->request_sense_length = sense_len;
1256 sp->request_sense_ptr = cp->sense_buffer;
1257 if (sp->request_sense_length > 32)
1258 sense_len = 32;
1259
1260 memcpy(cp->sense_buffer, sense_data, sense_len);
1261
1262 sp->request_sense_ptr += sense_len;
1263 sp->request_sense_length -= sense_len;
1264 if (sp->request_sense_length != 0)
1265 rsp->status_srb = sp;
1266
1267 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1268 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
1269 cp->device->channel, cp->device->id, cp->device->lun, cp,
1270 cp->serial_number));
1271 if (sense_len)
1272 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1273 }
1274
1275 /**
1276 * qla2x00_status_entry() - Process a Status IOCB entry.
1277 * @ha: SCSI driver HA context
1278 * @pkt: Entry pointer
1279 */
1280 static void
1281 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1282 {
1283 srb_t *sp;
1284 fc_port_t *fcport;
1285 struct scsi_cmnd *cp;
1286 sts_entry_t *sts;
1287 struct sts_entry_24xx *sts24;
1288 uint16_t comp_status;
1289 uint16_t scsi_status;
1290 uint8_t lscsi_status;
1291 int32_t resid;
1292 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
1293 uint8_t *rsp_info, *sense_data;
1294 struct qla_hw_data *ha = vha->hw;
1295 uint32_t handle;
1296 uint16_t que;
1297 struct req_que *req;
1298
1299 sts = (sts_entry_t *) pkt;
1300 sts24 = (struct sts_entry_24xx *) pkt;
1301 if (IS_FWI2_CAPABLE(ha)) {
1302 comp_status = le16_to_cpu(sts24->comp_status);
1303 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1304 } else {
1305 comp_status = le16_to_cpu(sts->comp_status);
1306 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1307 }
1308 handle = (uint32_t) LSW(sts->handle);
1309 que = MSW(sts->handle);
1310 req = ha->req_q_map[que];
1311 /* Fast path completion. */
1312 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1313 qla2x00_process_completed_request(vha, req, handle);
1314
1315 return;
1316 }
1317
1318 /* Validate handle. */
1319 if (handle < MAX_OUTSTANDING_COMMANDS) {
1320 sp = req->outstanding_cmds[handle];
1321 req->outstanding_cmds[handle] = NULL;
1322 } else
1323 sp = NULL;
1324
1325 if (sp == NULL) {
1326 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1327 vha->host_no));
1328 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1329
1330 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1331 qla2xxx_wake_dpc(vha);
1332 return;
1333 }
1334 cp = sp->cmd;
1335 if (cp == NULL) {
1336 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1337 "pkt->handle=%d sp=%p.\n", vha->host_no, handle, sp));
1338 qla_printk(KERN_WARNING, ha,
1339 "Command is NULL: already returned to OS (sp=%p)\n", sp);
1340
1341 return;
1342 }
1343
1344 lscsi_status = scsi_status & STATUS_MASK;
1345
1346 fcport = sp->fcport;
1347
1348 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1349 if (IS_FWI2_CAPABLE(ha)) {
1350 sense_len = le32_to_cpu(sts24->sense_len);
1351 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1352 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1353 fw_resid_len = le32_to_cpu(sts24->residual_len);
1354 rsp_info = sts24->data;
1355 sense_data = sts24->data;
1356 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1357 } else {
1358 sense_len = le16_to_cpu(sts->req_sense_length);
1359 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1360 resid_len = le32_to_cpu(sts->residual_length);
1361 rsp_info = sts->rsp_info;
1362 sense_data = sts->req_sense_data;
1363 }
1364
1365 /* Check for any FCP transport errors. */
1366 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1367 /* Sense data lies beyond any FCP RESPONSE data. */
1368 if (IS_FWI2_CAPABLE(ha))
1369 sense_data += rsp_info_len;
1370 if (rsp_info_len > 3 && rsp_info[3]) {
1371 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1372 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1373 "retrying command\n", vha->host_no,
1374 cp->device->channel, cp->device->id,
1375 cp->device->lun, rsp_info_len, rsp_info[0],
1376 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1377 rsp_info[5], rsp_info[6], rsp_info[7]));
1378
1379 cp->result = DID_BUS_BUSY << 16;
1380 qla2x00_sp_compl(ha, sp);
1381 return;
1382 }
1383 }
1384
1385 /* Check for overrun. */
1386 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1387 scsi_status & SS_RESIDUAL_OVER)
1388 comp_status = CS_DATA_OVERRUN;
1389
1390 /*
1391 * Based on Host and scsi status generate status code for Linux
1392 */
1393 switch (comp_status) {
1394 case CS_COMPLETE:
1395 case CS_QUEUE_FULL:
1396 if (scsi_status == 0) {
1397 cp->result = DID_OK << 16;
1398 break;
1399 }
1400 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1401 resid = resid_len;
1402 scsi_set_resid(cp, resid);
1403
1404 if (!lscsi_status &&
1405 ((unsigned)(scsi_bufflen(cp) - resid) <
1406 cp->underflow)) {
1407 qla_printk(KERN_INFO, ha,
1408 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1409 "detected (%x of %x bytes)...returning "
1410 "error status.\n", vha->host_no,
1411 cp->device->channel, cp->device->id,
1412 cp->device->lun, resid,
1413 scsi_bufflen(cp));
1414
1415 cp->result = DID_ERROR << 16;
1416 break;
1417 }
1418 }
1419 cp->result = DID_OK << 16 | lscsi_status;
1420
1421 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1422 DEBUG2(printk(KERN_INFO
1423 "scsi(%ld): QUEUE FULL status detected "
1424 "0x%x-0x%x.\n", vha->host_no, comp_status,
1425 scsi_status));
1426
1427 /* Adjust queue depth for all luns on the port. */
1428 if (!ql2xqfulltracking)
1429 break;
1430 fcport->last_queue_full = jiffies;
1431 starget_for_each_device(cp->device->sdev_target,
1432 fcport, qla2x00_adjust_sdev_qdepth_down);
1433 break;
1434 }
1435 if (lscsi_status != SS_CHECK_CONDITION)
1436 break;
1437
1438 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1439 if (!(scsi_status & SS_SENSE_LEN_VALID))
1440 break;
1441
1442 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1443 break;
1444
1445 case CS_DATA_UNDERRUN:
1446 resid = resid_len;
1447 /* Use F/W calculated residual length. */
1448 if (IS_FWI2_CAPABLE(ha)) {
1449 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1450 lscsi_status = 0;
1451 } else if (resid != fw_resid_len) {
1452 scsi_status &= ~SS_RESIDUAL_UNDER;
1453 lscsi_status = 0;
1454 }
1455 resid = fw_resid_len;
1456 }
1457
1458 if (scsi_status & SS_RESIDUAL_UNDER) {
1459 scsi_set_resid(cp, resid);
1460 } else {
1461 DEBUG2(printk(KERN_INFO
1462 "scsi(%ld:%d:%d) UNDERRUN status detected "
1463 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1464 "os_underflow=0x%x\n", vha->host_no,
1465 cp->device->id, cp->device->lun, comp_status,
1466 scsi_status, resid_len, resid, cp->cmnd[0],
1467 cp->underflow));
1468
1469 }
1470
1471 /*
1472 * Check to see if SCSI Status is non zero. If so report SCSI
1473 * Status.
1474 */
1475 if (lscsi_status != 0) {
1476 cp->result = DID_OK << 16 | lscsi_status;
1477
1478 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1479 DEBUG2(printk(KERN_INFO
1480 "scsi(%ld): QUEUE FULL status detected "
1481 "0x%x-0x%x.\n", vha->host_no, comp_status,
1482 scsi_status));
1483
1484 /*
1485 * Adjust queue depth for all luns on the
1486 * port.
1487 */
1488 if (!ql2xqfulltracking)
1489 break;
1490 fcport->last_queue_full = jiffies;
1491 starget_for_each_device(
1492 cp->device->sdev_target, fcport,
1493 qla2x00_adjust_sdev_qdepth_down);
1494 break;
1495 }
1496 if (lscsi_status != SS_CHECK_CONDITION)
1497 break;
1498
1499 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1500 if (!(scsi_status & SS_SENSE_LEN_VALID))
1501 break;
1502
1503 qla2x00_handle_sense(sp, sense_data, sense_len, rsp);
1504 } else {
1505 /*
1506 * If RISC reports underrun and target does not report
1507 * it then we must have a lost frame, so tell upper
1508 * layer to retry it by reporting an error.
1509 */
1510 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1511 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1512 "frame(s) detected (%x of %x bytes)..."
1513 "retrying command.\n",
1514 vha->host_no, cp->device->channel,
1515 cp->device->id, cp->device->lun, resid,
1516 scsi_bufflen(cp)));
1517
1518 scsi_set_resid(cp, resid);
1519 cp->result = DID_ERROR << 16;
1520 break;
1521 }
1522
1523 /* Handle mid-layer underflow */
1524 if ((unsigned)(scsi_bufflen(cp) - resid) <
1525 cp->underflow) {
1526 qla_printk(KERN_INFO, ha,
1527 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1528 "detected (%x of %x bytes)...returning "
1529 "error status.\n", vha->host_no,
1530 cp->device->channel, cp->device->id,
1531 cp->device->lun, resid,
1532 scsi_bufflen(cp));
1533
1534 cp->result = DID_ERROR << 16;
1535 break;
1536 }
1537
1538 /* Everybody online, looking good... */
1539 cp->result = DID_OK << 16;
1540 }
1541 break;
1542
1543 case CS_DATA_OVERRUN:
1544 DEBUG2(printk(KERN_INFO
1545 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1546 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1547 scsi_status));
1548 DEBUG2(printk(KERN_INFO
1549 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1550 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1551 cp->cmnd[4], cp->cmnd[5]));
1552 DEBUG2(printk(KERN_INFO
1553 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1554 "status!\n",
1555 cp->serial_number, scsi_bufflen(cp), resid_len));
1556
1557 cp->result = DID_ERROR << 16;
1558 break;
1559
1560 case CS_PORT_LOGGED_OUT:
1561 case CS_PORT_CONFIG_CHG:
1562 case CS_PORT_BUSY:
1563 case CS_INCOMPLETE:
1564 case CS_PORT_UNAVAILABLE:
1565 /*
1566 * If the port is in Target Down state, return all IOs for this
1567 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1568 * retry_queue.
1569 */
1570 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1571 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1572 vha->host_no, cp->device->id, cp->device->lun,
1573 cp->serial_number, comp_status,
1574 atomic_read(&fcport->state)));
1575
1576 /*
1577 * We are going to have the fc class block the rport
1578 * while we try to recover so instruct the mid layer
1579 * to requeue until the class decides how to handle this.
1580 */
1581 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1582 if (atomic_read(&fcport->state) == FCS_ONLINE)
1583 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1584 break;
1585
1586 case CS_RESET:
1587 DEBUG2(printk(KERN_INFO
1588 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1589 vha->host_no, comp_status, scsi_status));
1590
1591 cp->result = DID_RESET << 16;
1592 break;
1593
1594 case CS_ABORTED:
1595 /*
1596 * hv2.19.12 - DID_ABORT does not retry the request if we
1597 * aborted this request then abort otherwise it must be a
1598 * reset.
1599 */
1600 DEBUG2(printk(KERN_INFO
1601 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1602 vha->host_no, comp_status, scsi_status));
1603
1604 cp->result = DID_RESET << 16;
1605 break;
1606
1607 case CS_TIMEOUT:
1608 /*
1609 * We are going to have the fc class block the rport
1610 * while we try to recover so instruct the mid layer
1611 * to requeue until the class decides how to handle this.
1612 */
1613 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1614
1615 if (IS_FWI2_CAPABLE(ha)) {
1616 DEBUG2(printk(KERN_INFO
1617 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1618 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1619 cp->device->id, cp->device->lun, comp_status,
1620 scsi_status));
1621 break;
1622 }
1623 DEBUG2(printk(KERN_INFO
1624 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1625 "sflags=%x.\n", vha->host_no, cp->device->channel,
1626 cp->device->id, cp->device->lun, comp_status, scsi_status,
1627 le16_to_cpu(sts->status_flags)));
1628
1629 /* Check to see if logout occurred. */
1630 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1631 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1632 break;
1633
1634 default:
1635 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1636 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1637 qla_printk(KERN_INFO, ha,
1638 "Unknown status detected 0x%x-0x%x.\n",
1639 comp_status, scsi_status);
1640
1641 cp->result = DID_ERROR << 16;
1642 break;
1643 }
1644
1645 /* Place command on done queue. */
1646 if (rsp->status_srb == NULL)
1647 qla2x00_sp_compl(ha, sp);
1648 }
1649
1650 /**
1651 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1652 * @ha: SCSI driver HA context
1653 * @pkt: Entry pointer
1654 *
1655 * Extended sense data.
1656 */
1657 static void
1658 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1659 {
1660 uint8_t sense_sz = 0;
1661 struct qla_hw_data *ha = rsp->hw;
1662 srb_t *sp = rsp->status_srb;
1663 struct scsi_cmnd *cp;
1664
1665 if (sp != NULL && sp->request_sense_length != 0) {
1666 cp = sp->cmd;
1667 if (cp == NULL) {
1668 DEBUG2(printk("%s(): Cmd already returned back to OS "
1669 "sp=%p.\n", __func__, sp));
1670 qla_printk(KERN_INFO, ha,
1671 "cmd is NULL: already returned to OS (sp=%p)\n",
1672 sp);
1673
1674 rsp->status_srb = NULL;
1675 return;
1676 }
1677
1678 if (sp->request_sense_length > sizeof(pkt->data)) {
1679 sense_sz = sizeof(pkt->data);
1680 } else {
1681 sense_sz = sp->request_sense_length;
1682 }
1683
1684 /* Move sense data. */
1685 if (IS_FWI2_CAPABLE(ha))
1686 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1687 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1688 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1689
1690 sp->request_sense_ptr += sense_sz;
1691 sp->request_sense_length -= sense_sz;
1692
1693 /* Place command on done queue. */
1694 if (sp->request_sense_length == 0) {
1695 rsp->status_srb = NULL;
1696 qla2x00_sp_compl(ha, sp);
1697 }
1698 }
1699 }
1700
1701 /**
1702 * qla2x00_error_entry() - Process an error entry.
1703 * @ha: SCSI driver HA context
1704 * @pkt: Entry pointer
1705 */
1706 static void
1707 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1708 {
1709 srb_t *sp;
1710 struct qla_hw_data *ha = vha->hw;
1711 uint32_t handle = LSW(pkt->handle);
1712 uint16_t que = MSW(pkt->handle);
1713 struct req_que *req = ha->req_q_map[que];
1714 #if defined(QL_DEBUG_LEVEL_2)
1715 if (pkt->entry_status & RF_INV_E_ORDER)
1716 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1717 else if (pkt->entry_status & RF_INV_E_COUNT)
1718 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1719 else if (pkt->entry_status & RF_INV_E_PARAM)
1720 qla_printk(KERN_ERR, ha,
1721 "%s: Invalid Entry Parameter\n", __func__);
1722 else if (pkt->entry_status & RF_INV_E_TYPE)
1723 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1724 else if (pkt->entry_status & RF_BUSY)
1725 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1726 else
1727 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1728 #endif
1729
1730 /* Validate handle. */
1731 if (handle < MAX_OUTSTANDING_COMMANDS)
1732 sp = req->outstanding_cmds[handle];
1733 else
1734 sp = NULL;
1735
1736 if (sp) {
1737 /* Free outstanding command slot. */
1738 req->outstanding_cmds[handle] = NULL;
1739
1740 /* Bad payload or header */
1741 if (pkt->entry_status &
1742 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1743 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1744 sp->cmd->result = DID_ERROR << 16;
1745 } else if (pkt->entry_status & RF_BUSY) {
1746 sp->cmd->result = DID_BUS_BUSY << 16;
1747 } else {
1748 sp->cmd->result = DID_ERROR << 16;
1749 }
1750 qla2x00_sp_compl(ha, sp);
1751
1752 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1753 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1754 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1755 vha->host_no));
1756 qla_printk(KERN_WARNING, ha,
1757 "Error entry - invalid handle\n");
1758
1759 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1760 qla2xxx_wake_dpc(vha);
1761 }
1762 }
1763
1764 /**
1765 * qla24xx_mbx_completion() - Process mailbox command completions.
1766 * @ha: SCSI driver HA context
1767 * @mb0: Mailbox0 register
1768 */
1769 static void
1770 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1771 {
1772 uint16_t cnt;
1773 uint16_t __iomem *wptr;
1774 struct qla_hw_data *ha = vha->hw;
1775 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1776
1777 /* Load return mailbox registers. */
1778 ha->flags.mbox_int = 1;
1779 ha->mailbox_out[0] = mb0;
1780 wptr = (uint16_t __iomem *)&reg->mailbox1;
1781
1782 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1783 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1784 wptr++;
1785 }
1786
1787 if (ha->mcp) {
1788 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1789 __func__, vha->host_no, ha->mcp->mb[0]));
1790 } else {
1791 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1792 __func__, vha->host_no));
1793 }
1794 }
1795
1796 /**
1797 * qla24xx_process_response_queue() - Process response queue entries.
1798 * @ha: SCSI driver HA context
1799 */
1800 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1801 struct rsp_que *rsp)
1802 {
1803 struct sts_entry_24xx *pkt;
1804
1805 if (!vha->flags.online)
1806 return;
1807
1808 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1809 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1810
1811 rsp->ring_index++;
1812 if (rsp->ring_index == rsp->length) {
1813 rsp->ring_index = 0;
1814 rsp->ring_ptr = rsp->ring;
1815 } else {
1816 rsp->ring_ptr++;
1817 }
1818
1819 if (pkt->entry_status != 0) {
1820 DEBUG3(printk(KERN_INFO
1821 "scsi(%ld): Process error entry.\n", vha->host_no));
1822
1823 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1824 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1825 wmb();
1826 continue;
1827 }
1828
1829 switch (pkt->entry_type) {
1830 case STATUS_TYPE:
1831 qla2x00_status_entry(vha, rsp, pkt);
1832 break;
1833 case STATUS_CONT_TYPE:
1834 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1835 break;
1836 case VP_RPT_ID_IOCB_TYPE:
1837 qla24xx_report_id_acquisition(vha,
1838 (struct vp_rpt_id_entry_24xx *)pkt);
1839 break;
1840 case LOGINOUT_PORT_IOCB_TYPE:
1841 qla24xx_logio_entry(vha, rsp->req,
1842 (struct logio_entry_24xx *)pkt);
1843 break;
1844 default:
1845 /* Type Not Supported. */
1846 DEBUG4(printk(KERN_WARNING
1847 "scsi(%ld): Received unknown response pkt type %x "
1848 "entry status=%x.\n",
1849 vha->host_no, pkt->entry_type, pkt->entry_status));
1850 break;
1851 }
1852 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1853 wmb();
1854 }
1855
1856 /* Adjust ring index */
1857 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
1858 }
1859
1860 static void
1861 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1862 {
1863 int rval;
1864 uint32_t cnt;
1865 struct qla_hw_data *ha = vha->hw;
1866 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1867
1868 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1869 return;
1870
1871 rval = QLA_SUCCESS;
1872 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1873 RD_REG_DWORD(&reg->iobase_addr);
1874 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1875 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1876 rval == QLA_SUCCESS; cnt--) {
1877 if (cnt) {
1878 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1879 udelay(10);
1880 } else
1881 rval = QLA_FUNCTION_TIMEOUT;
1882 }
1883 if (rval == QLA_SUCCESS)
1884 goto next_test;
1885
1886 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1887 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1888 rval == QLA_SUCCESS; cnt--) {
1889 if (cnt) {
1890 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1891 udelay(10);
1892 } else
1893 rval = QLA_FUNCTION_TIMEOUT;
1894 }
1895 if (rval != QLA_SUCCESS)
1896 goto done;
1897
1898 next_test:
1899 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1900 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1901
1902 done:
1903 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1904 RD_REG_DWORD(&reg->iobase_window);
1905 }
1906
1907 /**
1908 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1909 * @irq:
1910 * @dev_id: SCSI driver HA context
1911 *
1912 * Called by system whenever the host adapter generates an interrupt.
1913 *
1914 * Returns handled flag.
1915 */
1916 irqreturn_t
1917 qla24xx_intr_handler(int irq, void *dev_id)
1918 {
1919 scsi_qla_host_t *vha;
1920 struct qla_hw_data *ha;
1921 struct device_reg_24xx __iomem *reg;
1922 int status;
1923 unsigned long iter;
1924 uint32_t stat;
1925 uint32_t hccr;
1926 uint16_t mb[4];
1927 struct rsp_que *rsp;
1928 unsigned long flags;
1929
1930 rsp = (struct rsp_que *) dev_id;
1931 if (!rsp) {
1932 printk(KERN_INFO
1933 "%s(): NULL response queue pointer\n", __func__);
1934 return IRQ_NONE;
1935 }
1936
1937 ha = rsp->hw;
1938 reg = &ha->iobase->isp24;
1939 status = 0;
1940
1941 spin_lock_irqsave(&ha->hardware_lock, flags);
1942 vha = pci_get_drvdata(ha->pdev);
1943 for (iter = 50; iter--; ) {
1944 stat = RD_REG_DWORD(&reg->host_status);
1945 if (stat & HSRX_RISC_PAUSED) {
1946 if (pci_channel_offline(ha->pdev))
1947 break;
1948
1949 hccr = RD_REG_DWORD(&reg->hccr);
1950
1951 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1952 "Dumping firmware!\n", hccr);
1953
1954 qla2xxx_check_risc_status(vha);
1955
1956 ha->isp_ops->fw_dump(vha, 1);
1957 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1958 break;
1959 } else if ((stat & HSRX_RISC_INT) == 0)
1960 break;
1961
1962 switch (stat & 0xff) {
1963 case 0x1:
1964 case 0x2:
1965 case 0x10:
1966 case 0x11:
1967 qla24xx_mbx_completion(vha, MSW(stat));
1968 status |= MBX_INTERRUPT;
1969
1970 break;
1971 case 0x12:
1972 mb[0] = MSW(stat);
1973 mb[1] = RD_REG_WORD(&reg->mailbox1);
1974 mb[2] = RD_REG_WORD(&reg->mailbox2);
1975 mb[3] = RD_REG_WORD(&reg->mailbox3);
1976 qla2x00_async_event(vha, rsp, mb);
1977 break;
1978 case 0x13:
1979 case 0x14:
1980 qla24xx_process_response_queue(vha, rsp);
1981 break;
1982 default:
1983 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1984 "(%d).\n",
1985 vha->host_no, stat & 0xff));
1986 break;
1987 }
1988 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1989 RD_REG_DWORD_RELAXED(&reg->hccr);
1990 }
1991 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1992
1993 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1994 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1995 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1996 complete(&ha->mbx_intr_comp);
1997 }
1998
1999 return IRQ_HANDLED;
2000 }
2001
2002 static irqreturn_t
2003 qla24xx_msix_rsp_q(int irq, void *dev_id)
2004 {
2005 struct qla_hw_data *ha;
2006 struct rsp_que *rsp;
2007 struct device_reg_24xx __iomem *reg;
2008 struct scsi_qla_host *vha;
2009
2010 rsp = (struct rsp_que *) dev_id;
2011 if (!rsp) {
2012 printk(KERN_INFO
2013 "%s(): NULL response queue pointer\n", __func__);
2014 return IRQ_NONE;
2015 }
2016 ha = rsp->hw;
2017 reg = &ha->iobase->isp24;
2018
2019 spin_lock_irq(&ha->hardware_lock);
2020
2021 vha = qla25xx_get_host(rsp);
2022 qla24xx_process_response_queue(vha, rsp);
2023 if (!ha->mqenable) {
2024 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2025 RD_REG_DWORD_RELAXED(&reg->hccr);
2026 }
2027 spin_unlock_irq(&ha->hardware_lock);
2028
2029 return IRQ_HANDLED;
2030 }
2031
2032 static irqreturn_t
2033 qla25xx_msix_rsp_q(int irq, void *dev_id)
2034 {
2035 struct qla_hw_data *ha;
2036 struct rsp_que *rsp;
2037
2038 rsp = (struct rsp_que *) dev_id;
2039 if (!rsp) {
2040 printk(KERN_INFO
2041 "%s(): NULL response queue pointer\n", __func__);
2042 return IRQ_NONE;
2043 }
2044 ha = rsp->hw;
2045
2046 queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2047
2048 return IRQ_HANDLED;
2049 }
2050
2051 static irqreturn_t
2052 qla24xx_msix_default(int irq, void *dev_id)
2053 {
2054 scsi_qla_host_t *vha;
2055 struct qla_hw_data *ha;
2056 struct rsp_que *rsp;
2057 struct device_reg_24xx __iomem *reg;
2058 int status;
2059 uint32_t stat;
2060 uint32_t hccr;
2061 uint16_t mb[4];
2062
2063 rsp = (struct rsp_que *) dev_id;
2064 if (!rsp) {
2065 DEBUG(printk(
2066 "%s(): NULL response queue pointer\n", __func__));
2067 return IRQ_NONE;
2068 }
2069 ha = rsp->hw;
2070 reg = &ha->iobase->isp24;
2071 status = 0;
2072
2073 spin_lock_irq(&ha->hardware_lock);
2074 vha = pci_get_drvdata(ha->pdev);
2075 do {
2076 stat = RD_REG_DWORD(&reg->host_status);
2077 if (stat & HSRX_RISC_PAUSED) {
2078 if (pci_channel_offline(ha->pdev))
2079 break;
2080
2081 hccr = RD_REG_DWORD(&reg->hccr);
2082
2083 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2084 "Dumping firmware!\n", hccr);
2085
2086 qla2xxx_check_risc_status(vha);
2087
2088 ha->isp_ops->fw_dump(vha, 1);
2089 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2090 break;
2091 } else if ((stat & HSRX_RISC_INT) == 0)
2092 break;
2093
2094 switch (stat & 0xff) {
2095 case 0x1:
2096 case 0x2:
2097 case 0x10:
2098 case 0x11:
2099 qla24xx_mbx_completion(vha, MSW(stat));
2100 status |= MBX_INTERRUPT;
2101
2102 break;
2103 case 0x12:
2104 mb[0] = MSW(stat);
2105 mb[1] = RD_REG_WORD(&reg->mailbox1);
2106 mb[2] = RD_REG_WORD(&reg->mailbox2);
2107 mb[3] = RD_REG_WORD(&reg->mailbox3);
2108 qla2x00_async_event(vha, rsp, mb);
2109 break;
2110 case 0x13:
2111 case 0x14:
2112 qla24xx_process_response_queue(vha, rsp);
2113 break;
2114 default:
2115 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2116 "(%d).\n",
2117 vha->host_no, stat & 0xff));
2118 break;
2119 }
2120 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2121 } while (0);
2122 spin_unlock_irq(&ha->hardware_lock);
2123
2124 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2125 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2126 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2127 complete(&ha->mbx_intr_comp);
2128 }
2129
2130 return IRQ_HANDLED;
2131 }
2132
2133 /* Interrupt handling helpers. */
2134
2135 struct qla_init_msix_entry {
2136 const char *name;
2137 irq_handler_t handler;
2138 };
2139
2140 static struct qla_init_msix_entry msix_entries[3] = {
2141 { "qla2xxx (default)", qla24xx_msix_default },
2142 { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2143 { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2144 };
2145
2146 static void
2147 qla24xx_disable_msix(struct qla_hw_data *ha)
2148 {
2149 int i;
2150 struct qla_msix_entry *qentry;
2151
2152 for (i = 0; i < ha->msix_count; i++) {
2153 qentry = &ha->msix_entries[i];
2154 if (qentry->have_irq)
2155 free_irq(qentry->vector, qentry->rsp);
2156 }
2157 pci_disable_msix(ha->pdev);
2158 kfree(ha->msix_entries);
2159 ha->msix_entries = NULL;
2160 ha->flags.msix_enabled = 0;
2161 }
2162
2163 static int
2164 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2165 {
2166 #define MIN_MSIX_COUNT 2
2167 int i, ret;
2168 struct msix_entry *entries;
2169 struct qla_msix_entry *qentry;
2170
2171 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2172 GFP_KERNEL);
2173 if (!entries)
2174 return -ENOMEM;
2175
2176 for (i = 0; i < ha->msix_count; i++)
2177 entries[i].entry = i;
2178
2179 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2180 if (ret) {
2181 if (ret < MIN_MSIX_COUNT)
2182 goto msix_failed;
2183
2184 qla_printk(KERN_WARNING, ha,
2185 "MSI-X: Failed to enable support -- %d/%d\n"
2186 " Retry with %d vectors\n", ha->msix_count, ret, ret);
2187 ha->msix_count = ret;
2188 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2189 if (ret) {
2190 msix_failed:
2191 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2192 " support, giving up -- %d/%d\n",
2193 ha->msix_count, ret);
2194 goto msix_out;
2195 }
2196 ha->max_rsp_queues = ha->msix_count - 1;
2197 }
2198 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2199 ha->msix_count, GFP_KERNEL);
2200 if (!ha->msix_entries) {
2201 ret = -ENOMEM;
2202 goto msix_out;
2203 }
2204 ha->flags.msix_enabled = 1;
2205
2206 for (i = 0; i < ha->msix_count; i++) {
2207 qentry = &ha->msix_entries[i];
2208 qentry->vector = entries[i].vector;
2209 qentry->entry = entries[i].entry;
2210 qentry->have_irq = 0;
2211 qentry->rsp = NULL;
2212 }
2213
2214 /* Enable MSI-X vectors for the base queue */
2215 for (i = 0; i < 2; i++) {
2216 qentry = &ha->msix_entries[i];
2217 ret = request_irq(qentry->vector, msix_entries[i].handler,
2218 0, msix_entries[i].name, rsp);
2219 if (ret) {
2220 qla_printk(KERN_WARNING, ha,
2221 "MSI-X: Unable to register handler -- %x/%d.\n",
2222 qentry->vector, ret);
2223 qla24xx_disable_msix(ha);
2224 ha->mqenable = 0;
2225 goto msix_out;
2226 }
2227 qentry->have_irq = 1;
2228 qentry->rsp = rsp;
2229 rsp->msix = qentry;
2230 }
2231
2232 /* Enable MSI-X vector for response queue update for queue 0 */
2233 if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2234 ha->mqenable = 1;
2235
2236 msix_out:
2237 kfree(entries);
2238 return ret;
2239 }
2240
2241 int
2242 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2243 {
2244 int ret;
2245 device_reg_t __iomem *reg = ha->iobase;
2246
2247 /* If possible, enable MSI-X. */
2248 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2249 !IS_QLA8432(ha) && !IS_QLA8001(ha))
2250 goto skip_msix;
2251
2252 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2253 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2254 DEBUG2(qla_printk(KERN_WARNING, ha,
2255 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2256 ha->pdev->revision, ha->fw_attributes));
2257
2258 goto skip_msix;
2259 }
2260
2261 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2262 (ha->pdev->subsystem_device == 0x7040 ||
2263 ha->pdev->subsystem_device == 0x7041 ||
2264 ha->pdev->subsystem_device == 0x1705)) {
2265 DEBUG2(qla_printk(KERN_WARNING, ha,
2266 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
2267 ha->pdev->subsystem_vendor,
2268 ha->pdev->subsystem_device));
2269
2270 goto skip_msi;
2271 }
2272
2273 ret = qla24xx_enable_msix(ha, rsp);
2274 if (!ret) {
2275 DEBUG2(qla_printk(KERN_INFO, ha,
2276 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2277 ha->fw_attributes));
2278 goto clear_risc_ints;
2279 }
2280 qla_printk(KERN_WARNING, ha,
2281 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2282 skip_msix:
2283
2284 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2285 !IS_QLA8001(ha))
2286 goto skip_msi;
2287
2288 ret = pci_enable_msi(ha->pdev);
2289 if (!ret) {
2290 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2291 ha->flags.msi_enabled = 1;
2292 }
2293 skip_msi:
2294
2295 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2296 IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2297 if (ret) {
2298 qla_printk(KERN_WARNING, ha,
2299 "Failed to reserve interrupt %d already in use.\n",
2300 ha->pdev->irq);
2301 goto fail;
2302 }
2303 ha->flags.inta_enabled = 1;
2304 clear_risc_ints:
2305
2306 /*
2307 * FIXME: Noted that 8014s were being dropped during NK testing.
2308 * Timing deltas during MSI-X/INTa transitions?
2309 */
2310 if (IS_QLA81XX(ha))
2311 goto fail;
2312 spin_lock_irq(&ha->hardware_lock);
2313 if (IS_FWI2_CAPABLE(ha)) {
2314 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2315 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2316 } else {
2317 WRT_REG_WORD(&reg->isp.semaphore, 0);
2318 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2319 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2320 }
2321 spin_unlock_irq(&ha->hardware_lock);
2322
2323 fail:
2324 return ret;
2325 }
2326
2327 void
2328 qla2x00_free_irqs(scsi_qla_host_t *vha)
2329 {
2330 struct qla_hw_data *ha = vha->hw;
2331 struct rsp_que *rsp = ha->rsp_q_map[0];
2332
2333 if (ha->flags.msix_enabled)
2334 qla24xx_disable_msix(ha);
2335 else if (ha->flags.inta_enabled) {
2336 free_irq(ha->pdev->irq, rsp);
2337 pci_disable_msi(ha->pdev);
2338 }
2339 }
2340
2341
2342 int qla25xx_request_irq(struct rsp_que *rsp)
2343 {
2344 struct qla_hw_data *ha = rsp->hw;
2345 struct qla_init_msix_entry *intr = &msix_entries[2];
2346 struct qla_msix_entry *msix = rsp->msix;
2347 int ret;
2348
2349 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2350 if (ret) {
2351 qla_printk(KERN_WARNING, ha,
2352 "MSI-X: Unable to register handler -- %x/%d.\n",
2353 msix->vector, ret);
2354 return ret;
2355 }
2356 msix->have_irq = 1;
2357 msix->rsp = rsp;
2358 return ret;
2359 }
2360
2361 struct scsi_qla_host *
2362 qla25xx_get_host(struct rsp_que *rsp)
2363 {
2364 srb_t *sp;
2365 struct qla_hw_data *ha = rsp->hw;
2366 struct scsi_qla_host *vha = NULL;
2367 struct sts_entry_24xx *pkt;
2368 struct req_que *req;
2369 uint16_t que;
2370 uint32_t handle;
2371
2372 pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2373 que = MSW(pkt->handle);
2374 handle = (uint32_t) LSW(pkt->handle);
2375 req = ha->req_q_map[que];
2376 if (handle < MAX_OUTSTANDING_COMMANDS) {
2377 sp = req->outstanding_cmds[handle];
2378 if (sp)
2379 return sp->fcport->vha;
2380 else
2381 goto base_que;
2382 }
2383 base_que:
2384 vha = pci_get_drvdata(ha->pdev);
2385 return vha;
2386 }
Linux for Ginger Game Console