?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ext4: Remove duplicate call to ext4_commit_super() in ext4_freeze()
[linux-2.6/mini2440.git] / drivers / scsi / qla2xxx / qla_isr.c
blobf250e5b7897cf7387f14579d50dd9462c2b0dc28
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2008 QLogic Corporation
4 *
5 * See LICENSE.qla2xxx for copyright and licensing details.
6 */
7 #include "qla_def.h"
8
9 #include <linux/delay.h>
10 #include <scsi/scsi_tcq.h>
11
12 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
13 static void qla2x00_process_completed_request(struct scsi_qla_host *,
14 struct req_que *, uint32_t);
15 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
16 static void qla2x00_status_cont_entry(scsi_qla_host_t *, sts_cont_entry_t *);
17 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
18 sts_entry_t *);
19 static struct scsi_qla_host *qla2x00_get_rsp_host(struct rsp_que *);
20
21 /**
22 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
23 * @irq:
24 * @dev_id: SCSI driver HA context
25 *
26 * Called by system whenever the host adapter generates an interrupt.
27 *
28 * Returns handled flag.
29 */
30 irqreturn_t
31 qla2100_intr_handler(int irq, void *dev_id)
32 {
33 scsi_qla_host_t *vha;
34 struct qla_hw_data *ha;
35 struct device_reg_2xxx __iomem *reg;
36 int status;
37 unsigned long iter;
38 uint16_t hccr;
39 uint16_t mb[4];
40 struct rsp_que *rsp;
41
42 rsp = (struct rsp_que *) dev_id;
43 if (!rsp) {
44 printk(KERN_INFO
45 "%s(): NULL response queue pointer\n", __func__);
46 return (IRQ_NONE);
47 }
48
49 ha = rsp->hw;
50 reg = &ha->iobase->isp;
51 status = 0;
52
53 spin_lock(&ha->hardware_lock);
54 vha = qla2x00_get_rsp_host(rsp);
55 for (iter = 50; iter--; ) {
56 hccr = RD_REG_WORD(&reg->hccr);
57 if (hccr & HCCR_RISC_PAUSE) {
58 if (pci_channel_offline(ha->pdev))
59 break;
60
61 /*
62 * Issue a "HARD" reset in order for the RISC interrupt
63 * bit to be cleared. Schedule a big hammmer to get
64 * out of the RISC PAUSED state.
65 */
66 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
67 RD_REG_WORD(&reg->hccr);
68
69 ha->isp_ops->fw_dump(vha, 1);
70 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
71 break;
72 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
73 break;
74
75 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
76 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
77 RD_REG_WORD(&reg->hccr);
78
79 /* Get mailbox data. */
80 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
81 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
82 qla2x00_mbx_completion(vha, mb[0]);
83 status |= MBX_INTERRUPT;
84 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
85 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
86 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
87 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
88 qla2x00_async_event(vha, rsp, mb);
89 } else {
90 /*EMPTY*/
91 DEBUG2(printk("scsi(%ld): Unrecognized "
92 "interrupt type (%d).\n",
93 vha->host_no, mb[0]));
94 }
95 /* Release mailbox registers. */
96 WRT_REG_WORD(&reg->semaphore, 0);
97 RD_REG_WORD(&reg->semaphore);
98 } else {
99 qla2x00_process_response_queue(rsp);
100
101 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
102 RD_REG_WORD(&reg->hccr);
103 }
104 }
105 spin_unlock(&ha->hardware_lock);
106
107 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
108 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
109 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
110 complete(&ha->mbx_intr_comp);
111 }
112
113 return (IRQ_HANDLED);
114 }
115
116 /**
117 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
118 * @irq:
119 * @dev_id: SCSI driver HA context
120 *
121 * Called by system whenever the host adapter generates an interrupt.
122 *
123 * Returns handled flag.
124 */
125 irqreturn_t
126 qla2300_intr_handler(int irq, void *dev_id)
127 {
128 scsi_qla_host_t *vha;
129 struct device_reg_2xxx __iomem *reg;
130 int status;
131 unsigned long iter;
132 uint32_t stat;
133 uint16_t hccr;
134 uint16_t mb[4];
135 struct rsp_que *rsp;
136 struct qla_hw_data *ha;
137
138 rsp = (struct rsp_que *) dev_id;
139 if (!rsp) {
140 printk(KERN_INFO
141 "%s(): NULL response queue pointer\n", __func__);
142 return (IRQ_NONE);
143 }
144
145 ha = rsp->hw;
146 reg = &ha->iobase->isp;
147 status = 0;
148
149 spin_lock(&ha->hardware_lock);
150 vha = qla2x00_get_rsp_host(rsp);
151 for (iter = 50; iter--; ) {
152 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
153 if (stat & HSR_RISC_PAUSED) {
154 if (pci_channel_offline(ha->pdev))
155 break;
156
157 hccr = RD_REG_WORD(&reg->hccr);
158 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
159 qla_printk(KERN_INFO, ha, "Parity error -- "
160 "HCCR=%x, Dumping firmware!\n", hccr);
161 else
162 qla_printk(KERN_INFO, ha, "RISC paused -- "
163 "HCCR=%x, Dumping firmware!\n", hccr);
164
165 /*
166 * Issue a "HARD" reset in order for the RISC
167 * interrupt bit to be cleared. Schedule a big
168 * hammmer to get out of the RISC PAUSED state.
169 */
170 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
171 RD_REG_WORD(&reg->hccr);
172
173 ha->isp_ops->fw_dump(vha, 1);
174 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
175 break;
176 } else if ((stat & HSR_RISC_INT) == 0)
177 break;
178
179 switch (stat & 0xff) {
180 case 0x1:
181 case 0x2:
182 case 0x10:
183 case 0x11:
184 qla2x00_mbx_completion(vha, MSW(stat));
185 status |= MBX_INTERRUPT;
186
187 /* Release mailbox registers. */
188 WRT_REG_WORD(&reg->semaphore, 0);
189 break;
190 case 0x12:
191 mb[0] = MSW(stat);
192 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
193 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
194 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
195 qla2x00_async_event(vha, rsp, mb);
196 break;
197 case 0x13:
198 qla2x00_process_response_queue(rsp);
199 break;
200 case 0x15:
201 mb[0] = MBA_CMPLT_1_16BIT;
202 mb[1] = MSW(stat);
203 qla2x00_async_event(vha, rsp, mb);
204 break;
205 case 0x16:
206 mb[0] = MBA_SCSI_COMPLETION;
207 mb[1] = MSW(stat);
208 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
209 qla2x00_async_event(vha, rsp, mb);
210 break;
211 default:
212 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
213 "(%d).\n",
214 vha->host_no, stat & 0xff));
215 break;
216 }
217 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
218 RD_REG_WORD_RELAXED(&reg->hccr);
219 }
220 spin_unlock(&ha->hardware_lock);
221
222 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
223 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
224 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
225 complete(&ha->mbx_intr_comp);
226 }
227
228 return (IRQ_HANDLED);
229 }
230
231 /**
232 * qla2x00_mbx_completion() - Process mailbox command completions.
233 * @ha: SCSI driver HA context
234 * @mb0: Mailbox0 register
235 */
236 static void
237 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
238 {
239 uint16_t cnt;
240 uint16_t __iomem *wptr;
241 struct qla_hw_data *ha = vha->hw;
242 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
243
244 /* Load return mailbox registers. */
245 ha->flags.mbox_int = 1;
246 ha->mailbox_out[0] = mb0;
247 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
248
249 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
250 if (IS_QLA2200(ha) && cnt == 8)
251 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
252 if (cnt == 4 || cnt == 5)
253 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
254 else
255 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
256
257 wptr++;
258 }
259
260 if (ha->mcp) {
261 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
262 __func__, vha->host_no, ha->mcp->mb[0]));
263 } else {
264 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
265 __func__, vha->host_no));
266 }
267 }
268
269 static void
270 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
271 {
272 static char *event[] =
273 { "Complete", "Request Notification", "Time Extension" };
274 int rval;
275 struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
276 uint16_t __iomem *wptr;
277 uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
278
279 /* Seed data -- mailbox1 -> mailbox7. */
280 wptr = (uint16_t __iomem *)&reg24->mailbox1;
281 for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
282 mb[cnt] = RD_REG_WORD(wptr);
283
284 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
285 "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
286 event[aen & 0xff],
287 mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
288
289 /* Acknowledgement needed? [Notify && non-zero timeout]. */
290 timeout = (descr >> 8) & 0xf;
291 if (aen != MBA_IDC_NOTIFY || !timeout)
292 return;
293
294 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
295 "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
296
297 rval = qla2x00_post_idc_ack_work(vha, mb);
298 if (rval != QLA_SUCCESS)
299 qla_printk(KERN_WARNING, vha->hw,
300 "IDC failed to post ACK.\n");
301 }
302
303 /**
304 * qla2x00_async_event() - Process aynchronous events.
305 * @ha: SCSI driver HA context
306 * @mb: Mailbox registers (0 - 3)
307 */
308 void
309 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
310 {
311 #define LS_UNKNOWN 2
312 static char *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
313 char *link_speed;
314 uint16_t handle_cnt;
315 uint16_t cnt;
316 uint32_t handles[5];
317 struct qla_hw_data *ha = vha->hw;
318 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
319 uint32_t rscn_entry, host_pid;
320 uint8_t rscn_queue_index;
321 unsigned long flags;
322
323 /* Setup to process RIO completion. */
324 handle_cnt = 0;
325 if (IS_QLA81XX(ha))
326 goto skip_rio;
327 switch (mb[0]) {
328 case MBA_SCSI_COMPLETION:
329 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
330 handle_cnt = 1;
331 break;
332 case MBA_CMPLT_1_16BIT:
333 handles[0] = mb[1];
334 handle_cnt = 1;
335 mb[0] = MBA_SCSI_COMPLETION;
336 break;
337 case MBA_CMPLT_2_16BIT:
338 handles[0] = mb[1];
339 handles[1] = mb[2];
340 handle_cnt = 2;
341 mb[0] = MBA_SCSI_COMPLETION;
342 break;
343 case MBA_CMPLT_3_16BIT:
344 handles[0] = mb[1];
345 handles[1] = mb[2];
346 handles[2] = mb[3];
347 handle_cnt = 3;
348 mb[0] = MBA_SCSI_COMPLETION;
349 break;
350 case MBA_CMPLT_4_16BIT:
351 handles[0] = mb[1];
352 handles[1] = mb[2];
353 handles[2] = mb[3];
354 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
355 handle_cnt = 4;
356 mb[0] = MBA_SCSI_COMPLETION;
357 break;
358 case MBA_CMPLT_5_16BIT:
359 handles[0] = mb[1];
360 handles[1] = mb[2];
361 handles[2] = mb[3];
362 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
363 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
364 handle_cnt = 5;
365 mb[0] = MBA_SCSI_COMPLETION;
366 break;
367 case MBA_CMPLT_2_32BIT:
368 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
369 handles[1] = le32_to_cpu(
370 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
371 RD_MAILBOX_REG(ha, reg, 6));
372 handle_cnt = 2;
373 mb[0] = MBA_SCSI_COMPLETION;
374 break;
375 default:
376 break;
377 }
378 skip_rio:
379 switch (mb[0]) {
380 case MBA_SCSI_COMPLETION: /* Fast Post */
381 if (!vha->flags.online)
382 break;
383
384 for (cnt = 0; cnt < handle_cnt; cnt++)
385 qla2x00_process_completed_request(vha, rsp->req,
386 handles[cnt]);
387 break;
388
389 case MBA_RESET: /* Reset */
390 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
391 vha->host_no));
392
393 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
394 break;
395
396 case MBA_SYSTEM_ERR: /* System Error */
397 qla_printk(KERN_INFO, ha,
398 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n",
399 mb[1], mb[2], mb[3]);
400
401 ha->isp_ops->fw_dump(vha, 1);
402
403 if (IS_FWI2_CAPABLE(ha)) {
404 if (mb[1] == 0 && mb[2] == 0) {
405 qla_printk(KERN_ERR, ha,
406 "Unrecoverable Hardware Error: adapter "
407 "marked OFFLINE!\n");
408 vha->flags.online = 0;
409 } else
410 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
411 } else if (mb[1] == 0) {
412 qla_printk(KERN_INFO, ha,
413 "Unrecoverable Hardware Error: adapter marked "
414 "OFFLINE!\n");
415 vha->flags.online = 0;
416 } else
417 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
418 break;
419
420 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
421 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error.\n",
422 vha->host_no));
423 qla_printk(KERN_WARNING, ha, "ISP Request Transfer Error.\n");
424
425 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
426 break;
427
428 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
429 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
430 vha->host_no));
431 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
432
433 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
434 break;
435
436 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
437 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
438 vha->host_no));
439 break;
440
441 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
442 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
443 mb[1]));
444 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
445
446 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
447 atomic_set(&vha->loop_state, LOOP_DOWN);
448 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
449 qla2x00_mark_all_devices_lost(vha, 1);
450 }
451
452 if (vha->vp_idx) {
453 atomic_set(&vha->vp_state, VP_FAILED);
454 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
455 }
456
457 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
458 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
459
460 vha->flags.management_server_logged_in = 0;
461 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
462 break;
463
464 case MBA_LOOP_UP: /* Loop Up Event */
465 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
466 link_speed = link_speeds[0];
467 ha->link_data_rate = PORT_SPEED_1GB;
468 } else {
469 link_speed = link_speeds[LS_UNKNOWN];
470 if (mb[1] < 5)
471 link_speed = link_speeds[mb[1]];
472 else if (mb[1] == 0x13)
473 link_speed = link_speeds[5];
474 ha->link_data_rate = mb[1];
475 }
476
477 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
478 vha->host_no, link_speed));
479 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
480 link_speed);
481
482 vha->flags.management_server_logged_in = 0;
483 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
484 break;
485
486 case MBA_LOOP_DOWN: /* Loop Down Event */
487 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
488 "(%x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3]));
489 qla_printk(KERN_INFO, ha, "LOOP DOWN detected (%x %x %x).\n",
490 mb[1], mb[2], mb[3]);
491
492 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
493 atomic_set(&vha->loop_state, LOOP_DOWN);
494 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
495 vha->device_flags |= DFLG_NO_CABLE;
496 qla2x00_mark_all_devices_lost(vha, 1);
497 }
498
499 if (vha->vp_idx) {
500 atomic_set(&vha->vp_state, VP_FAILED);
501 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
502 }
503
504 vha->flags.management_server_logged_in = 0;
505 ha->link_data_rate = PORT_SPEED_UNKNOWN;
506 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
507 break;
508
509 case MBA_LIP_RESET: /* LIP reset occurred */
510 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
511 vha->host_no, mb[1]));
512 qla_printk(KERN_INFO, ha,
513 "LIP reset occurred (%x).\n", mb[1]);
514
515 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
516 atomic_set(&vha->loop_state, LOOP_DOWN);
517 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
518 qla2x00_mark_all_devices_lost(vha, 1);
519 }
520
521 if (vha->vp_idx) {
522 atomic_set(&vha->vp_state, VP_FAILED);
523 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
524 }
525
526 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
527
528 ha->operating_mode = LOOP;
529 vha->flags.management_server_logged_in = 0;
530 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
531 break;
532
533 /* case MBA_DCBX_COMPLETE: */
534 case MBA_POINT_TO_POINT: /* Point-to-Point */
535 if (IS_QLA2100(ha))
536 break;
537
538 if (IS_QLA81XX(ha))
539 DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
540 "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
541 else
542 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
543 "received.\n", vha->host_no));
544
545 /*
546 * Until there's a transition from loop down to loop up, treat
547 * this as loop down only.
548 */
549 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
550 atomic_set(&vha->loop_state, LOOP_DOWN);
551 if (!atomic_read(&vha->loop_down_timer))
552 atomic_set(&vha->loop_down_timer,
553 LOOP_DOWN_TIME);
554 qla2x00_mark_all_devices_lost(vha, 1);
555 }
556
557 if (vha->vp_idx) {
558 atomic_set(&vha->vp_state, VP_FAILED);
559 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
560 }
561
562 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
563 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
564
565 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
566 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
567
568 ha->flags.gpsc_supported = 1;
569 vha->flags.management_server_logged_in = 0;
570 break;
571
572 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
573 if (IS_QLA2100(ha))
574 break;
575
576 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
577 "received.\n",
578 vha->host_no));
579 qla_printk(KERN_INFO, ha,
580 "Configuration change detected: value=%x.\n", mb[1]);
581
582 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
583 atomic_set(&vha->loop_state, LOOP_DOWN);
584 if (!atomic_read(&vha->loop_down_timer))
585 atomic_set(&vha->loop_down_timer,
586 LOOP_DOWN_TIME);
587 qla2x00_mark_all_devices_lost(vha, 1);
588 }
589
590 if (vha->vp_idx) {
591 atomic_set(&vha->vp_state, VP_FAILED);
592 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
593 }
594
595 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
596 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
597 break;
598
599 case MBA_PORT_UPDATE: /* Port database update */
600 /* Only handle SCNs for our Vport index. */
601 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
602 break;
603
604 /*
605 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
606 * event etc. earlier indicating loop is down) then process
607 * it. Otherwise ignore it and Wait for RSCN to come in.
608 */
609 atomic_set(&vha->loop_down_timer, 0);
610 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
611 atomic_read(&vha->loop_state) != LOOP_DEAD) {
612 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
613 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
614 mb[2], mb[3]));
615 break;
616 }
617
618 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
619 vha->host_no));
620 DEBUG(printk(KERN_INFO
621 "scsi(%ld): Port database changed %04x %04x %04x.\n",
622 vha->host_no, mb[1], mb[2], mb[3]));
623
624 /*
625 * Mark all devices as missing so we will login again.
626 */
627 atomic_set(&vha->loop_state, LOOP_UP);
628
629 qla2x00_mark_all_devices_lost(vha, 1);
630
631 vha->flags.rscn_queue_overflow = 1;
632
633 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
634 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
635 break;
636
637 case MBA_RSCN_UPDATE: /* State Change Registration */
638 /* Check if the Vport has issued a SCR */
639 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
640 break;
641 /* Only handle SCNs for our Vport index. */
642 if (vha->vp_idx && vha->vp_idx != (mb[3] & 0xff))
643 break;
644 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
645 vha->host_no));
646 DEBUG(printk(KERN_INFO
647 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
648 vha->host_no, mb[1], mb[2], mb[3]));
649
650 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
651 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
652 | vha->d_id.b.al_pa;
653 if (rscn_entry == host_pid) {
654 DEBUG(printk(KERN_INFO
655 "scsi(%ld): Ignoring RSCN update to local host "
656 "port ID (%06x)\n",
657 vha->host_no, host_pid));
658 break;
659 }
660
661 /* Ignore reserved bits from RSCN-payload. */
662 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
663 rscn_queue_index = vha->rscn_in_ptr + 1;
664 if (rscn_queue_index == MAX_RSCN_COUNT)
665 rscn_queue_index = 0;
666 if (rscn_queue_index != vha->rscn_out_ptr) {
667 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
668 vha->rscn_in_ptr = rscn_queue_index;
669 } else {
670 vha->flags.rscn_queue_overflow = 1;
671 }
672
673 atomic_set(&vha->loop_state, LOOP_UPDATE);
674 atomic_set(&vha->loop_down_timer, 0);
675 vha->flags.management_server_logged_in = 0;
676
677 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
678 set_bit(RSCN_UPDATE, &vha->dpc_flags);
679 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
680 break;
681
682 /* case MBA_RIO_RESPONSE: */
683 case MBA_ZIO_RESPONSE:
684 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
685 vha->host_no));
686
687 if (IS_FWI2_CAPABLE(ha))
688 qla24xx_process_response_queue(rsp);
689 else
690 qla2x00_process_response_queue(rsp);
691 break;
692
693 case MBA_DISCARD_RND_FRAME:
694 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
695 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
696 break;
697
698 case MBA_TRACE_NOTIFICATION:
699 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
700 vha->host_no, mb[1], mb[2]));
701 break;
702
703 case MBA_ISP84XX_ALERT:
704 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
705 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
706
707 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
708 switch (mb[1]) {
709 case A84_PANIC_RECOVERY:
710 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
711 "%04x %04x\n", mb[2], mb[3]);
712 break;
713 case A84_OP_LOGIN_COMPLETE:
714 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
715 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
716 "firmware version %x\n", ha->cs84xx->op_fw_version));
717 break;
718 case A84_DIAG_LOGIN_COMPLETE:
719 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
720 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
721 "diagnostic firmware version %x\n",
722 ha->cs84xx->diag_fw_version));
723 break;
724 case A84_GOLD_LOGIN_COMPLETE:
725 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
726 ha->cs84xx->fw_update = 1;
727 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
728 "firmware version %x\n",
729 ha->cs84xx->gold_fw_version));
730 break;
731 default:
732 qla_printk(KERN_ERR, ha,
733 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
734 mb[1], mb[2], mb[3]);
735 }
736 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
737 break;
738 case MBA_DCBX_START:
739 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
740 vha->host_no, mb[1], mb[2], mb[3]));
741 break;
742 case MBA_DCBX_PARAM_UPDATE:
743 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
744 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
745 break;
746 case MBA_FCF_CONF_ERR:
747 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
748 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
749 break;
750 case MBA_IDC_COMPLETE:
751 case MBA_IDC_NOTIFY:
752 case MBA_IDC_TIME_EXT:
753 qla81xx_idc_event(vha, mb[0], mb[1]);
754 break;
755 }
756
757 if (!vha->vp_idx && ha->num_vhosts)
758 qla2x00_alert_all_vps(rsp, mb);
759 }
760
761 static void
762 qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, void *data)
763 {
764 fc_port_t *fcport = data;
765 struct scsi_qla_host *vha = fcport->vha;
766 struct qla_hw_data *ha = vha->hw;
767 struct req_que *req = NULL;
768
769 req = ha->req_q_map[vha->req_ques[0]];
770 if (!req)
771 return;
772 if (req->max_q_depth <= sdev->queue_depth)
773 return;
774
775 if (sdev->ordered_tags)
776 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG,
777 sdev->queue_depth + 1);
778 else
779 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG,
780 sdev->queue_depth + 1);
781
782 fcport->last_ramp_up = jiffies;
783
784 DEBUG2(qla_printk(KERN_INFO, ha,
785 "scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
786 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
787 sdev->queue_depth));
788 }
789
790 static void
791 qla2x00_adjust_sdev_qdepth_down(struct scsi_device *sdev, void *data)
792 {
793 fc_port_t *fcport = data;
794
795 if (!scsi_track_queue_full(sdev, sdev->queue_depth - 1))
796 return;
797
798 DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
799 "scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
800 fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
801 sdev->queue_depth));
802 }
803
804 static inline void
805 qla2x00_ramp_up_queue_depth(scsi_qla_host_t *vha, struct req_que *req,
806 srb_t *sp)
807 {
808 fc_port_t *fcport;
809 struct scsi_device *sdev;
810
811 sdev = sp->cmd->device;
812 if (sdev->queue_depth >= req->max_q_depth)
813 return;
814
815 fcport = sp->fcport;
816 if (time_before(jiffies,
817 fcport->last_ramp_up + ql2xqfullrampup * HZ))
818 return;
819 if (time_before(jiffies,
820 fcport->last_queue_full + ql2xqfullrampup * HZ))
821 return;
822
823 starget_for_each_device(sdev->sdev_target, fcport,
824 qla2x00_adjust_sdev_qdepth_up);
825 }
826
827 /**
828 * qla2x00_process_completed_request() - Process a Fast Post response.
829 * @ha: SCSI driver HA context
830 * @index: SRB index
831 */
832 static void
833 qla2x00_process_completed_request(struct scsi_qla_host *vha,
834 struct req_que *req, uint32_t index)
835 {
836 srb_t *sp;
837 struct qla_hw_data *ha = vha->hw;
838
839 /* Validate handle. */
840 if (index >= MAX_OUTSTANDING_COMMANDS) {
841 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
842 vha->host_no, index));
843 qla_printk(KERN_WARNING, ha,
844 "Invalid SCSI completion handle %d.\n", index);
845
846 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
847 return;
848 }
849
850 sp = req->outstanding_cmds[index];
851 if (sp) {
852 /* Free outstanding command slot. */
853 req->outstanding_cmds[index] = NULL;
854
855 CMD_COMPL_STATUS(sp->cmd) = 0L;
856 CMD_SCSI_STATUS(sp->cmd) = 0L;
857
858 /* Save ISP completion status */
859 sp->cmd->result = DID_OK << 16;
860
861 qla2x00_ramp_up_queue_depth(vha, req, sp);
862 qla2x00_sp_compl(ha, sp);
863 } else {
864 DEBUG2(printk("scsi(%ld): Invalid ISP SCSI completion handle\n",
865 vha->host_no));
866 qla_printk(KERN_WARNING, ha,
867 "Invalid ISP SCSI completion handle\n");
868
869 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
870 }
871 }
872
873 /**
874 * qla2x00_process_response_queue() - Process response queue entries.
875 * @ha: SCSI driver HA context
876 */
877 void
878 qla2x00_process_response_queue(struct rsp_que *rsp)
879 {
880 struct scsi_qla_host *vha;
881 struct qla_hw_data *ha = rsp->hw;
882 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
883 sts_entry_t *pkt;
884 uint16_t handle_cnt;
885 uint16_t cnt;
886
887 vha = qla2x00_get_rsp_host(rsp);
888
889 if (!vha->flags.online)
890 return;
891
892 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
893 pkt = (sts_entry_t *)rsp->ring_ptr;
894
895 rsp->ring_index++;
896 if (rsp->ring_index == rsp->length) {
897 rsp->ring_index = 0;
898 rsp->ring_ptr = rsp->ring;
899 } else {
900 rsp->ring_ptr++;
901 }
902
903 if (pkt->entry_status != 0) {
904 DEBUG3(printk(KERN_INFO
905 "scsi(%ld): Process error entry.\n", vha->host_no));
906
907 qla2x00_error_entry(vha, rsp, pkt);
908 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
909 wmb();
910 continue;
911 }
912
913 switch (pkt->entry_type) {
914 case STATUS_TYPE:
915 qla2x00_status_entry(vha, rsp, pkt);
916 break;
917 case STATUS_TYPE_21:
918 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
919 for (cnt = 0; cnt < handle_cnt; cnt++) {
920 qla2x00_process_completed_request(vha, rsp->req,
921 ((sts21_entry_t *)pkt)->handle[cnt]);
922 }
923 break;
924 case STATUS_TYPE_22:
925 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
926 for (cnt = 0; cnt < handle_cnt; cnt++) {
927 qla2x00_process_completed_request(vha, rsp->req,
928 ((sts22_entry_t *)pkt)->handle[cnt]);
929 }
930 break;
931 case STATUS_CONT_TYPE:
932 qla2x00_status_cont_entry(vha, (sts_cont_entry_t *)pkt);
933 break;
934 default:
935 /* Type Not Supported. */
936 DEBUG4(printk(KERN_WARNING
937 "scsi(%ld): Received unknown response pkt type %x "
938 "entry status=%x.\n",
939 vha->host_no, pkt->entry_type, pkt->entry_status));
940 break;
941 }
942 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
943 wmb();
944 }
945
946 /* Adjust ring index */
947 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
948 }
949
950 static inline void
951 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t sense_len)
952 {
953 struct scsi_cmnd *cp = sp->cmd;
954
955 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
956 sense_len = SCSI_SENSE_BUFFERSIZE;
957
958 CMD_ACTUAL_SNSLEN(cp) = sense_len;
959 sp->request_sense_length = sense_len;
960 sp->request_sense_ptr = cp->sense_buffer;
961 if (sp->request_sense_length > 32)
962 sense_len = 32;
963
964 memcpy(cp->sense_buffer, sense_data, sense_len);
965
966 sp->request_sense_ptr += sense_len;
967 sp->request_sense_length -= sense_len;
968 if (sp->request_sense_length != 0)
969 sp->fcport->vha->status_srb = sp;
970
971 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
972 "cmd=%p pid=%ld\n", __func__, sp->fcport->vha->host_no,
973 cp->device->channel, cp->device->id, cp->device->lun, cp,
974 cp->serial_number));
975 if (sense_len)
976 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer,
977 CMD_ACTUAL_SNSLEN(cp)));
978 }
979
980 /**
981 * qla2x00_status_entry() - Process a Status IOCB entry.
982 * @ha: SCSI driver HA context
983 * @pkt: Entry pointer
984 */
985 static void
986 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
987 {
988 srb_t *sp;
989 fc_port_t *fcport;
990 struct scsi_cmnd *cp;
991 sts_entry_t *sts;
992 struct sts_entry_24xx *sts24;
993 uint16_t comp_status;
994 uint16_t scsi_status;
995 uint8_t lscsi_status;
996 int32_t resid;
997 uint32_t sense_len, rsp_info_len, resid_len, fw_resid_len;
998 uint8_t *rsp_info, *sense_data;
999 struct qla_hw_data *ha = vha->hw;
1000 struct req_que *req = rsp->req;
1001
1002 sts = (sts_entry_t *) pkt;
1003 sts24 = (struct sts_entry_24xx *) pkt;
1004 if (IS_FWI2_CAPABLE(ha)) {
1005 comp_status = le16_to_cpu(sts24->comp_status);
1006 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1007 } else {
1008 comp_status = le16_to_cpu(sts->comp_status);
1009 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1010 }
1011
1012 /* Fast path completion. */
1013 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1014 qla2x00_process_completed_request(vha, req, sts->handle);
1015
1016 return;
1017 }
1018
1019 /* Validate handle. */
1020 if (sts->handle < MAX_OUTSTANDING_COMMANDS) {
1021 sp = req->outstanding_cmds[sts->handle];
1022 req->outstanding_cmds[sts->handle] = NULL;
1023 } else
1024 sp = NULL;
1025
1026 if (sp == NULL) {
1027 DEBUG2(printk("scsi(%ld): Status Entry invalid handle.\n",
1028 vha->host_no));
1029 qla_printk(KERN_WARNING, ha, "Status Entry invalid handle.\n");
1030
1031 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1032 qla2xxx_wake_dpc(vha);
1033 return;
1034 }
1035 cp = sp->cmd;
1036 if (cp == NULL) {
1037 DEBUG2(printk("scsi(%ld): Command already returned back to OS "
1038 "pkt->handle=%d sp=%p.\n", vha->host_no, sts->handle, sp));
1039 qla_printk(KERN_WARNING, ha,
1040 "Command is NULL: already returned to OS (sp=%p)\n", sp);
1041
1042 return;
1043 }
1044
1045 lscsi_status = scsi_status & STATUS_MASK;
1046 CMD_ENTRY_STATUS(cp) = sts->entry_status;
1047 CMD_COMPL_STATUS(cp) = comp_status;
1048 CMD_SCSI_STATUS(cp) = scsi_status;
1049
1050 fcport = sp->fcport;
1051
1052 sense_len = rsp_info_len = resid_len = fw_resid_len = 0;
1053 if (IS_FWI2_CAPABLE(ha)) {
1054 sense_len = le32_to_cpu(sts24->sense_len);
1055 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1056 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1057 fw_resid_len = le32_to_cpu(sts24->residual_len);
1058 rsp_info = sts24->data;
1059 sense_data = sts24->data;
1060 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1061 } else {
1062 sense_len = le16_to_cpu(sts->req_sense_length);
1063 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1064 resid_len = le32_to_cpu(sts->residual_length);
1065 rsp_info = sts->rsp_info;
1066 sense_data = sts->req_sense_data;
1067 }
1068
1069 /* Check for any FCP transport errors. */
1070 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1071 /* Sense data lies beyond any FCP RESPONSE data. */
1072 if (IS_FWI2_CAPABLE(ha))
1073 sense_data += rsp_info_len;
1074 if (rsp_info_len > 3 && rsp_info[3]) {
1075 DEBUG2(printk("scsi(%ld:%d:%d:%d) FCP I/O protocol "
1076 "failure (%x/%02x%02x%02x%02x%02x%02x%02x%02x)..."
1077 "retrying command\n", vha->host_no,
1078 cp->device->channel, cp->device->id,
1079 cp->device->lun, rsp_info_len, rsp_info[0],
1080 rsp_info[1], rsp_info[2], rsp_info[3], rsp_info[4],
1081 rsp_info[5], rsp_info[6], rsp_info[7]));
1082
1083 cp->result = DID_BUS_BUSY << 16;
1084 qla2x00_sp_compl(ha, sp);
1085 return;
1086 }
1087 }
1088
1089 /* Check for overrun. */
1090 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1091 scsi_status & SS_RESIDUAL_OVER)
1092 comp_status = CS_DATA_OVERRUN;
1093
1094 /*
1095 * Based on Host and scsi status generate status code for Linux
1096 */
1097 switch (comp_status) {
1098 case CS_COMPLETE:
1099 case CS_QUEUE_FULL:
1100 if (scsi_status == 0) {
1101 cp->result = DID_OK << 16;
1102 break;
1103 }
1104 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1105 resid = resid_len;
1106 scsi_set_resid(cp, resid);
1107 CMD_RESID_LEN(cp) = resid;
1108
1109 if (!lscsi_status &&
1110 ((unsigned)(scsi_bufflen(cp) - resid) <
1111 cp->underflow)) {
1112 qla_printk(KERN_INFO, ha,
1113 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1114 "detected (%x of %x bytes)...returning "
1115 "error status.\n", vha->host_no,
1116 cp->device->channel, cp->device->id,
1117 cp->device->lun, resid,
1118 scsi_bufflen(cp));
1119
1120 cp->result = DID_ERROR << 16;
1121 break;
1122 }
1123 }
1124 cp->result = DID_OK << 16 | lscsi_status;
1125
1126 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1127 DEBUG2(printk(KERN_INFO
1128 "scsi(%ld): QUEUE FULL status detected "
1129 "0x%x-0x%x.\n", vha->host_no, comp_status,
1130 scsi_status));
1131
1132 /* Adjust queue depth for all luns on the port. */
1133 fcport->last_queue_full = jiffies;
1134 starget_for_each_device(cp->device->sdev_target,
1135 fcport, qla2x00_adjust_sdev_qdepth_down);
1136 break;
1137 }
1138 if (lscsi_status != SS_CHECK_CONDITION)
1139 break;
1140
1141 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1142 if (!(scsi_status & SS_SENSE_LEN_VALID))
1143 break;
1144
1145 qla2x00_handle_sense(sp, sense_data, sense_len);
1146 break;
1147
1148 case CS_DATA_UNDERRUN:
1149 resid = resid_len;
1150 /* Use F/W calculated residual length. */
1151 if (IS_FWI2_CAPABLE(ha)) {
1152 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1153 lscsi_status = 0;
1154 } else if (resid != fw_resid_len) {
1155 scsi_status &= ~SS_RESIDUAL_UNDER;
1156 lscsi_status = 0;
1157 }
1158 resid = fw_resid_len;
1159 }
1160
1161 if (scsi_status & SS_RESIDUAL_UNDER) {
1162 scsi_set_resid(cp, resid);
1163 CMD_RESID_LEN(cp) = resid;
1164 } else {
1165 DEBUG2(printk(KERN_INFO
1166 "scsi(%ld:%d:%d) UNDERRUN status detected "
1167 "0x%x-0x%x. resid=0x%x fw_resid=0x%x cdb=0x%x "
1168 "os_underflow=0x%x\n", vha->host_no,
1169 cp->device->id, cp->device->lun, comp_status,
1170 scsi_status, resid_len, resid, cp->cmnd[0],
1171 cp->underflow));
1172
1173 }
1174
1175 /*
1176 * Check to see if SCSI Status is non zero. If so report SCSI
1177 * Status.
1178 */
1179 if (lscsi_status != 0) {
1180 cp->result = DID_OK << 16 | lscsi_status;
1181
1182 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1183 DEBUG2(printk(KERN_INFO
1184 "scsi(%ld): QUEUE FULL status detected "
1185 "0x%x-0x%x.\n", vha->host_no, comp_status,
1186 scsi_status));
1187
1188 /*
1189 * Adjust queue depth for all luns on the
1190 * port.
1191 */
1192 fcport->last_queue_full = jiffies;
1193 starget_for_each_device(
1194 cp->device->sdev_target, fcport,
1195 qla2x00_adjust_sdev_qdepth_down);
1196 break;
1197 }
1198 if (lscsi_status != SS_CHECK_CONDITION)
1199 break;
1200
1201 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1202 if (!(scsi_status & SS_SENSE_LEN_VALID))
1203 break;
1204
1205 qla2x00_handle_sense(sp, sense_data, sense_len);
1206 } else {
1207 /*
1208 * If RISC reports underrun and target does not report
1209 * it then we must have a lost frame, so tell upper
1210 * layer to retry it by reporting a bus busy.
1211 */
1212 if (!(scsi_status & SS_RESIDUAL_UNDER)) {
1213 DEBUG2(printk("scsi(%ld:%d:%d:%d) Dropped "
1214 "frame(s) detected (%x of %x bytes)..."
1215 "retrying command.\n",
1216 vha->host_no, cp->device->channel,
1217 cp->device->id, cp->device->lun, resid,
1218 scsi_bufflen(cp)));
1219
1220 cp->result = DID_BUS_BUSY << 16;
1221 break;
1222 }
1223
1224 /* Handle mid-layer underflow */
1225 if ((unsigned)(scsi_bufflen(cp) - resid) <
1226 cp->underflow) {
1227 qla_printk(KERN_INFO, ha,
1228 "scsi(%ld:%d:%d:%d): Mid-layer underflow "
1229 "detected (%x of %x bytes)...returning "
1230 "error status.\n", vha->host_no,
1231 cp->device->channel, cp->device->id,
1232 cp->device->lun, resid,
1233 scsi_bufflen(cp));
1234
1235 cp->result = DID_ERROR << 16;
1236 break;
1237 }
1238
1239 /* Everybody online, looking good... */
1240 cp->result = DID_OK << 16;
1241 }
1242 break;
1243
1244 case CS_DATA_OVERRUN:
1245 DEBUG2(printk(KERN_INFO
1246 "scsi(%ld:%d:%d): OVERRUN status detected 0x%x-0x%x\n",
1247 vha->host_no, cp->device->id, cp->device->lun, comp_status,
1248 scsi_status));
1249 DEBUG2(printk(KERN_INFO
1250 "CDB: 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
1251 cp->cmnd[0], cp->cmnd[1], cp->cmnd[2], cp->cmnd[3],
1252 cp->cmnd[4], cp->cmnd[5]));
1253 DEBUG2(printk(KERN_INFO
1254 "PID=0x%lx req=0x%x xtra=0x%x -- returning DID_ERROR "
1255 "status!\n",
1256 cp->serial_number, scsi_bufflen(cp), resid_len));
1257
1258 cp->result = DID_ERROR << 16;
1259 break;
1260
1261 case CS_PORT_LOGGED_OUT:
1262 case CS_PORT_CONFIG_CHG:
1263 case CS_PORT_BUSY:
1264 case CS_INCOMPLETE:
1265 case CS_PORT_UNAVAILABLE:
1266 /*
1267 * If the port is in Target Down state, return all IOs for this
1268 * Target with DID_NO_CONNECT ELSE Queue the IOs in the
1269 * retry_queue.
1270 */
1271 DEBUG2(printk("scsi(%ld:%d:%d): status_entry: Port Down "
1272 "pid=%ld, compl status=0x%x, port state=0x%x\n",
1273 vha->host_no, cp->device->id, cp->device->lun,
1274 cp->serial_number, comp_status,
1275 atomic_read(&fcport->state)));
1276
1277 /*
1278 * We are going to have the fc class block the rport
1279 * while we try to recover so instruct the mid layer
1280 * to requeue until the class decides how to handle this.
1281 */
1282 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1283 if (atomic_read(&fcport->state) == FCS_ONLINE)
1284 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1285 break;
1286
1287 case CS_RESET:
1288 DEBUG2(printk(KERN_INFO
1289 "scsi(%ld): RESET status detected 0x%x-0x%x.\n",
1290 vha->host_no, comp_status, scsi_status));
1291
1292 cp->result = DID_RESET << 16;
1293 break;
1294
1295 case CS_ABORTED:
1296 /*
1297 * hv2.19.12 - DID_ABORT does not retry the request if we
1298 * aborted this request then abort otherwise it must be a
1299 * reset.
1300 */
1301 DEBUG2(printk(KERN_INFO
1302 "scsi(%ld): ABORT status detected 0x%x-0x%x.\n",
1303 vha->host_no, comp_status, scsi_status));
1304
1305 cp->result = DID_RESET << 16;
1306 break;
1307
1308 case CS_TIMEOUT:
1309 /*
1310 * We are going to have the fc class block the rport
1311 * while we try to recover so instruct the mid layer
1312 * to requeue until the class decides how to handle this.
1313 */
1314 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1315
1316 if (IS_FWI2_CAPABLE(ha)) {
1317 DEBUG2(printk(KERN_INFO
1318 "scsi(%ld:%d:%d:%d): TIMEOUT status detected "
1319 "0x%x-0x%x\n", vha->host_no, cp->device->channel,
1320 cp->device->id, cp->device->lun, comp_status,
1321 scsi_status));
1322 break;
1323 }
1324 DEBUG2(printk(KERN_INFO
1325 "scsi(%ld:%d:%d:%d): TIMEOUT status detected 0x%x-0x%x "
1326 "sflags=%x.\n", vha->host_no, cp->device->channel,
1327 cp->device->id, cp->device->lun, comp_status, scsi_status,
1328 le16_to_cpu(sts->status_flags)));
1329
1330 /* Check to see if logout occurred. */
1331 if ((le16_to_cpu(sts->status_flags) & SF_LOGOUT_SENT))
1332 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1333 break;
1334
1335 default:
1336 DEBUG3(printk("scsi(%ld): Error detected (unknown status) "
1337 "0x%x-0x%x.\n", vha->host_no, comp_status, scsi_status));
1338 qla_printk(KERN_INFO, ha,
1339 "Unknown status detected 0x%x-0x%x.\n",
1340 comp_status, scsi_status);
1341
1342 cp->result = DID_ERROR << 16;
1343 break;
1344 }
1345
1346 /* Place command on done queue. */
1347 if (vha->status_srb == NULL)
1348 qla2x00_sp_compl(ha, sp);
1349 }
1350
1351 /**
1352 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1353 * @ha: SCSI driver HA context
1354 * @pkt: Entry pointer
1355 *
1356 * Extended sense data.
1357 */
1358 static void
1359 qla2x00_status_cont_entry(scsi_qla_host_t *vha, sts_cont_entry_t *pkt)
1360 {
1361 uint8_t sense_sz = 0;
1362 struct qla_hw_data *ha = vha->hw;
1363 srb_t *sp = vha->status_srb;
1364 struct scsi_cmnd *cp;
1365
1366 if (sp != NULL && sp->request_sense_length != 0) {
1367 cp = sp->cmd;
1368 if (cp == NULL) {
1369 DEBUG2(printk("%s(): Cmd already returned back to OS "
1370 "sp=%p.\n", __func__, sp));
1371 qla_printk(KERN_INFO, ha,
1372 "cmd is NULL: already returned to OS (sp=%p)\n",
1373 sp);
1374
1375 vha->status_srb = NULL;
1376 return;
1377 }
1378
1379 if (sp->request_sense_length > sizeof(pkt->data)) {
1380 sense_sz = sizeof(pkt->data);
1381 } else {
1382 sense_sz = sp->request_sense_length;
1383 }
1384
1385 /* Move sense data. */
1386 if (IS_FWI2_CAPABLE(ha))
1387 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1388 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1389 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1390
1391 sp->request_sense_ptr += sense_sz;
1392 sp->request_sense_length -= sense_sz;
1393
1394 /* Place command on done queue. */
1395 if (sp->request_sense_length == 0) {
1396 vha->status_srb = NULL;
1397 qla2x00_sp_compl(ha, sp);
1398 }
1399 }
1400 }
1401
1402 /**
1403 * qla2x00_error_entry() - Process an error entry.
1404 * @ha: SCSI driver HA context
1405 * @pkt: Entry pointer
1406 */
1407 static void
1408 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1409 {
1410 srb_t *sp;
1411 struct qla_hw_data *ha = vha->hw;
1412 struct req_que *req = rsp->req;
1413 #if defined(QL_DEBUG_LEVEL_2)
1414 if (pkt->entry_status & RF_INV_E_ORDER)
1415 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1416 else if (pkt->entry_status & RF_INV_E_COUNT)
1417 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1418 else if (pkt->entry_status & RF_INV_E_PARAM)
1419 qla_printk(KERN_ERR, ha,
1420 "%s: Invalid Entry Parameter\n", __func__);
1421 else if (pkt->entry_status & RF_INV_E_TYPE)
1422 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1423 else if (pkt->entry_status & RF_BUSY)
1424 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1425 else
1426 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1427 #endif
1428
1429 /* Validate handle. */
1430 if (pkt->handle < MAX_OUTSTANDING_COMMANDS)
1431 sp = req->outstanding_cmds[pkt->handle];
1432 else
1433 sp = NULL;
1434
1435 if (sp) {
1436 /* Free outstanding command slot. */
1437 req->outstanding_cmds[pkt->handle] = NULL;
1438
1439 /* Bad payload or header */
1440 if (pkt->entry_status &
1441 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1442 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1443 sp->cmd->result = DID_ERROR << 16;
1444 } else if (pkt->entry_status & RF_BUSY) {
1445 sp->cmd->result = DID_BUS_BUSY << 16;
1446 } else {
1447 sp->cmd->result = DID_ERROR << 16;
1448 }
1449 qla2x00_sp_compl(ha, sp);
1450
1451 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1452 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1453 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1454 vha->host_no));
1455 qla_printk(KERN_WARNING, ha,
1456 "Error entry - invalid handle\n");
1457
1458 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1459 qla2xxx_wake_dpc(vha);
1460 }
1461 }
1462
1463 /**
1464 * qla24xx_mbx_completion() - Process mailbox command completions.
1465 * @ha: SCSI driver HA context
1466 * @mb0: Mailbox0 register
1467 */
1468 static void
1469 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1470 {
1471 uint16_t cnt;
1472 uint16_t __iomem *wptr;
1473 struct qla_hw_data *ha = vha->hw;
1474 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1475
1476 /* Load return mailbox registers. */
1477 ha->flags.mbox_int = 1;
1478 ha->mailbox_out[0] = mb0;
1479 wptr = (uint16_t __iomem *)&reg->mailbox1;
1480
1481 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1482 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1483 wptr++;
1484 }
1485
1486 if (ha->mcp) {
1487 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1488 __func__, vha->host_no, ha->mcp->mb[0]));
1489 } else {
1490 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1491 __func__, vha->host_no));
1492 }
1493 }
1494
1495 /**
1496 * qla24xx_process_response_queue() - Process response queue entries.
1497 * @ha: SCSI driver HA context
1498 */
1499 void
1500 qla24xx_process_response_queue(struct rsp_que *rsp)
1501 {
1502 struct qla_hw_data *ha = rsp->hw;
1503 struct sts_entry_24xx *pkt;
1504 struct scsi_qla_host *vha;
1505
1506 vha = qla2x00_get_rsp_host(rsp);
1507
1508 if (!vha->flags.online)
1509 return;
1510
1511 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1512 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1513
1514 rsp->ring_index++;
1515 if (rsp->ring_index == rsp->length) {
1516 rsp->ring_index = 0;
1517 rsp->ring_ptr = rsp->ring;
1518 } else {
1519 rsp->ring_ptr++;
1520 }
1521
1522 if (pkt->entry_status != 0) {
1523 DEBUG3(printk(KERN_INFO
1524 "scsi(%ld): Process error entry.\n", vha->host_no));
1525
1526 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1527 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1528 wmb();
1529 continue;
1530 }
1531
1532 switch (pkt->entry_type) {
1533 case STATUS_TYPE:
1534 qla2x00_status_entry(vha, rsp, pkt);
1535 break;
1536 case STATUS_CONT_TYPE:
1537 qla2x00_status_cont_entry(vha, (sts_cont_entry_t *)pkt);
1538 break;
1539 case VP_RPT_ID_IOCB_TYPE:
1540 qla24xx_report_id_acquisition(vha,
1541 (struct vp_rpt_id_entry_24xx *)pkt);
1542 break;
1543 default:
1544 /* Type Not Supported. */
1545 DEBUG4(printk(KERN_WARNING
1546 "scsi(%ld): Received unknown response pkt type %x "
1547 "entry status=%x.\n",
1548 vha->host_no, pkt->entry_type, pkt->entry_status));
1549 break;
1550 }
1551 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1552 wmb();
1553 }
1554
1555 /* Adjust ring index */
1556 ha->isp_ops->wrt_rsp_reg(ha, rsp->id, rsp->ring_index);
1557 }
1558
1559 static void
1560 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
1561 {
1562 int rval;
1563 uint32_t cnt;
1564 struct qla_hw_data *ha = vha->hw;
1565 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1566
1567 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
1568 return;
1569
1570 rval = QLA_SUCCESS;
1571 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
1572 RD_REG_DWORD(&reg->iobase_addr);
1573 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1574 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1575 rval == QLA_SUCCESS; cnt--) {
1576 if (cnt) {
1577 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
1578 udelay(10);
1579 } else
1580 rval = QLA_FUNCTION_TIMEOUT;
1581 }
1582 if (rval == QLA_SUCCESS)
1583 goto next_test;
1584
1585 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1586 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
1587 rval == QLA_SUCCESS; cnt--) {
1588 if (cnt) {
1589 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
1590 udelay(10);
1591 } else
1592 rval = QLA_FUNCTION_TIMEOUT;
1593 }
1594 if (rval != QLA_SUCCESS)
1595 goto done;
1596
1597 next_test:
1598 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
1599 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
1600
1601 done:
1602 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
1603 RD_REG_DWORD(&reg->iobase_window);
1604 }
1605
1606 /**
1607 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
1608 * @irq:
1609 * @dev_id: SCSI driver HA context
1610 *
1611 * Called by system whenever the host adapter generates an interrupt.
1612 *
1613 * Returns handled flag.
1614 */
1615 irqreturn_t
1616 qla24xx_intr_handler(int irq, void *dev_id)
1617 {
1618 scsi_qla_host_t *vha;
1619 struct qla_hw_data *ha;
1620 struct device_reg_24xx __iomem *reg;
1621 int status;
1622 unsigned long iter;
1623 uint32_t stat;
1624 uint32_t hccr;
1625 uint16_t mb[4];
1626 struct rsp_que *rsp;
1627
1628 rsp = (struct rsp_que *) dev_id;
1629 if (!rsp) {
1630 printk(KERN_INFO
1631 "%s(): NULL response queue pointer\n", __func__);
1632 return IRQ_NONE;
1633 }
1634
1635 ha = rsp->hw;
1636 reg = &ha->iobase->isp24;
1637 status = 0;
1638
1639 spin_lock(&ha->hardware_lock);
1640 vha = qla2x00_get_rsp_host(rsp);
1641 for (iter = 50; iter--; ) {
1642 stat = RD_REG_DWORD(&reg->host_status);
1643 if (stat & HSRX_RISC_PAUSED) {
1644 if (pci_channel_offline(ha->pdev))
1645 break;
1646
1647 hccr = RD_REG_DWORD(&reg->hccr);
1648
1649 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1650 "Dumping firmware!\n", hccr);
1651
1652 qla2xxx_check_risc_status(vha);
1653
1654 ha->isp_ops->fw_dump(vha, 1);
1655 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1656 break;
1657 } else if ((stat & HSRX_RISC_INT) == 0)
1658 break;
1659
1660 switch (stat & 0xff) {
1661 case 0x1:
1662 case 0x2:
1663 case 0x10:
1664 case 0x11:
1665 qla24xx_mbx_completion(vha, MSW(stat));
1666 status |= MBX_INTERRUPT;
1667
1668 break;
1669 case 0x12:
1670 mb[0] = MSW(stat);
1671 mb[1] = RD_REG_WORD(&reg->mailbox1);
1672 mb[2] = RD_REG_WORD(&reg->mailbox2);
1673 mb[3] = RD_REG_WORD(&reg->mailbox3);
1674 qla2x00_async_event(vha, rsp, mb);
1675 break;
1676 case 0x13:
1677 case 0x14:
1678 qla24xx_process_response_queue(rsp);
1679 break;
1680 default:
1681 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1682 "(%d).\n",
1683 vha->host_no, stat & 0xff));
1684 break;
1685 }
1686 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1687 RD_REG_DWORD_RELAXED(&reg->hccr);
1688 }
1689 spin_unlock(&ha->hardware_lock);
1690
1691 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1692 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1693 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1694 complete(&ha->mbx_intr_comp);
1695 }
1696
1697 return IRQ_HANDLED;
1698 }
1699
1700 static irqreturn_t
1701 qla24xx_msix_rsp_q(int irq, void *dev_id)
1702 {
1703 struct qla_hw_data *ha;
1704 struct rsp_que *rsp;
1705 struct device_reg_24xx __iomem *reg;
1706
1707 rsp = (struct rsp_que *) dev_id;
1708 if (!rsp) {
1709 printk(KERN_INFO
1710 "%s(): NULL response queue pointer\n", __func__);
1711 return IRQ_NONE;
1712 }
1713 ha = rsp->hw;
1714 reg = &ha->iobase->isp24;
1715
1716 spin_lock_irq(&ha->hardware_lock);
1717
1718 qla24xx_process_response_queue(rsp);
1719 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1720
1721 spin_unlock_irq(&ha->hardware_lock);
1722
1723 return IRQ_HANDLED;
1724 }
1725
1726 static irqreturn_t
1727 qla25xx_msix_rsp_q(int irq, void *dev_id)
1728 {
1729 struct qla_hw_data *ha;
1730 struct rsp_que *rsp;
1731 struct device_reg_24xx __iomem *reg;
1732
1733 rsp = (struct rsp_que *) dev_id;
1734 if (!rsp) {
1735 printk(KERN_INFO
1736 "%s(): NULL response queue pointer\n", __func__);
1737 return IRQ_NONE;
1738 }
1739 ha = rsp->hw;
1740 reg = &ha->iobase->isp24;
1741
1742 spin_lock_irq(&ha->hardware_lock);
1743
1744 qla24xx_process_response_queue(rsp);
1745
1746 spin_unlock_irq(&ha->hardware_lock);
1747
1748 return IRQ_HANDLED;
1749 }
1750
1751 static irqreturn_t
1752 qla24xx_msix_default(int irq, void *dev_id)
1753 {
1754 scsi_qla_host_t *vha;
1755 struct qla_hw_data *ha;
1756 struct rsp_que *rsp;
1757 struct device_reg_24xx __iomem *reg;
1758 int status;
1759 uint32_t stat;
1760 uint32_t hccr;
1761 uint16_t mb[4];
1762
1763 rsp = (struct rsp_que *) dev_id;
1764 if (!rsp) {
1765 DEBUG(printk(
1766 "%s(): NULL response queue pointer\n", __func__));
1767 return IRQ_NONE;
1768 }
1769 ha = rsp->hw;
1770 reg = &ha->iobase->isp24;
1771 status = 0;
1772
1773 spin_lock_irq(&ha->hardware_lock);
1774 vha = qla2x00_get_rsp_host(rsp);
1775 do {
1776 stat = RD_REG_DWORD(&reg->host_status);
1777 if (stat & HSRX_RISC_PAUSED) {
1778 if (pci_channel_offline(ha->pdev))
1779 break;
1780
1781 hccr = RD_REG_DWORD(&reg->hccr);
1782
1783 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
1784 "Dumping firmware!\n", hccr);
1785
1786 qla2xxx_check_risc_status(vha);
1787
1788 ha->isp_ops->fw_dump(vha, 1);
1789 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1790 break;
1791 } else if ((stat & HSRX_RISC_INT) == 0)
1792 break;
1793
1794 switch (stat & 0xff) {
1795 case 0x1:
1796 case 0x2:
1797 case 0x10:
1798 case 0x11:
1799 qla24xx_mbx_completion(vha, MSW(stat));
1800 status |= MBX_INTERRUPT;
1801
1802 break;
1803 case 0x12:
1804 mb[0] = MSW(stat);
1805 mb[1] = RD_REG_WORD(&reg->mailbox1);
1806 mb[2] = RD_REG_WORD(&reg->mailbox2);
1807 mb[3] = RD_REG_WORD(&reg->mailbox3);
1808 qla2x00_async_event(vha, rsp, mb);
1809 break;
1810 case 0x13:
1811 case 0x14:
1812 qla24xx_process_response_queue(rsp);
1813 break;
1814 default:
1815 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
1816 "(%d).\n",
1817 vha->host_no, stat & 0xff));
1818 break;
1819 }
1820 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
1821 } while (0);
1822 spin_unlock_irq(&ha->hardware_lock);
1823
1824 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
1825 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
1826 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
1827 complete(&ha->mbx_intr_comp);
1828 }
1829
1830 return IRQ_HANDLED;
1831 }
1832
1833 /* Interrupt handling helpers. */
1834
1835 struct qla_init_msix_entry {
1836 uint16_t entry;
1837 uint16_t index;
1838 const char *name;
1839 irq_handler_t handler;
1840 };
1841
1842 static struct qla_init_msix_entry base_queue = {
1843 .entry = 0,
1844 .index = 0,
1845 .name = "qla2xxx (default)",
1846 .handler = qla24xx_msix_default,
1847 };
1848
1849 static struct qla_init_msix_entry base_rsp_queue = {
1850 .entry = 1,
1851 .index = 1,
1852 .name = "qla2xxx (rsp_q)",
1853 .handler = qla24xx_msix_rsp_q,
1854 };
1855
1856 static struct qla_init_msix_entry multi_rsp_queue = {
1857 .entry = 1,
1858 .index = 1,
1859 .name = "qla2xxx (multi_q)",
1860 .handler = qla25xx_msix_rsp_q,
1861 };
1862
1863 static void
1864 qla24xx_disable_msix(struct qla_hw_data *ha)
1865 {
1866 int i;
1867 struct qla_msix_entry *qentry;
1868
1869 for (i = 0; i < ha->msix_count; i++) {
1870 qentry = &ha->msix_entries[i];
1871 if (qentry->have_irq)
1872 free_irq(qentry->vector, qentry->rsp);
1873 }
1874 pci_disable_msix(ha->pdev);
1875 kfree(ha->msix_entries);
1876 ha->msix_entries = NULL;
1877 ha->flags.msix_enabled = 0;
1878 }
1879
1880 static int
1881 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
1882 {
1883 #define MIN_MSIX_COUNT 2
1884 int i, ret;
1885 struct msix_entry *entries;
1886 struct qla_msix_entry *qentry;
1887 struct qla_init_msix_entry *msix_queue;
1888
1889 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
1890 GFP_KERNEL);
1891 if (!entries)
1892 return -ENOMEM;
1893
1894 for (i = 0; i < ha->msix_count; i++)
1895 entries[i].entry = i;
1896
1897 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1898 if (ret) {
1899 if (ret < MIN_MSIX_COUNT)
1900 goto msix_failed;
1901
1902 qla_printk(KERN_WARNING, ha,
1903 "MSI-X: Failed to enable support -- %d/%d\n"
1904 " Retry with %d vectors\n", ha->msix_count, ret, ret);
1905 ha->msix_count = ret;
1906 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
1907 if (ret) {
1908 msix_failed:
1909 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
1910 " support, giving up -- %d/%d\n",
1911 ha->msix_count, ret);
1912 goto msix_out;
1913 }
1914 ha->max_queues = ha->msix_count - 1;
1915 }
1916 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
1917 ha->msix_count, GFP_KERNEL);
1918 if (!ha->msix_entries) {
1919 ret = -ENOMEM;
1920 goto msix_out;
1921 }
1922 ha->flags.msix_enabled = 1;
1923
1924 for (i = 0; i < ha->msix_count; i++) {
1925 qentry = &ha->msix_entries[i];
1926 qentry->vector = entries[i].vector;
1927 qentry->entry = entries[i].entry;
1928 qentry->have_irq = 0;
1929 qentry->rsp = NULL;
1930 }
1931
1932 /* Enable MSI-X for AENs for queue 0 */
1933 qentry = &ha->msix_entries[0];
1934 ret = request_irq(qentry->vector, base_queue.handler, 0,
1935 base_queue.name, rsp);
1936 if (ret) {
1937 qla_printk(KERN_WARNING, ha,
1938 "MSI-X: Unable to register handler -- %x/%d.\n",
1939 qentry->vector, ret);
1940 qla24xx_disable_msix(ha);
1941 goto msix_out;
1942 }
1943 qentry->have_irq = 1;
1944 qentry->rsp = rsp;
1945
1946 /* Enable MSI-X vector for response queue update for queue 0 */
1947 if (ha->max_queues > 1 && ha->mqiobase) {
1948 ha->mqenable = 1;
1949 msix_queue = &multi_rsp_queue;
1950 qla_printk(KERN_INFO, ha,
1951 "MQ enabled, Number of Queue Resources: %d \n",
1952 ha->max_queues);
1953 } else {
1954 ha->mqenable = 0;
1955 msix_queue = &base_rsp_queue;
1956 }
1957
1958 qentry = &ha->msix_entries[1];
1959 ret = request_irq(qentry->vector, msix_queue->handler, 0,
1960 msix_queue->name, rsp);
1961 if (ret) {
1962 qla_printk(KERN_WARNING, ha,
1963 "MSI-X: Unable to register handler -- %x/%d.\n",
1964 qentry->vector, ret);
1965 qla24xx_disable_msix(ha);
1966 ha->mqenable = 0;
1967 goto msix_out;
1968 }
1969 qentry->have_irq = 1;
1970 qentry->rsp = rsp;
1971
1972 msix_out:
1973 kfree(entries);
1974 return ret;
1975 }
1976
1977 int
1978 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
1979 {
1980 int ret;
1981 device_reg_t __iomem *reg = ha->iobase;
1982
1983 /* If possible, enable MSI-X. */
1984 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
1985 !IS_QLA8432(ha) && !IS_QLA8001(ha))
1986 goto skip_msix;
1987
1988 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
1989 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
1990 DEBUG2(qla_printk(KERN_WARNING, ha,
1991 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
1992 ha->pdev->revision, ha->fw_attributes));
1993
1994 goto skip_msix;
1995 }
1996
1997 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
1998 (ha->pdev->subsystem_device == 0x7040 ||
1999 ha->pdev->subsystem_device == 0x7041 ||
2000 ha->pdev->subsystem_device == 0x1705)) {
2001 DEBUG2(qla_printk(KERN_WARNING, ha,
2002 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X, 0x%X).\n",
2003 ha->pdev->subsystem_vendor,
2004 ha->pdev->subsystem_device));
2005
2006 goto skip_msi;
2007 }
2008
2009 ret = qla24xx_enable_msix(ha, rsp);
2010 if (!ret) {
2011 DEBUG2(qla_printk(KERN_INFO, ha,
2012 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2013 ha->fw_attributes));
2014 goto clear_risc_ints;
2015 }
2016 qla_printk(KERN_WARNING, ha,
2017 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2018 skip_msix:
2019
2020 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2021 !IS_QLA8001(ha))
2022 goto skip_msi;
2023
2024 ret = pci_enable_msi(ha->pdev);
2025 if (!ret) {
2026 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2027 ha->flags.msi_enabled = 1;
2028 }
2029 skip_msi:
2030
2031 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2032 IRQF_DISABLED|IRQF_SHARED, QLA2XXX_DRIVER_NAME, rsp);
2033 if (ret) {
2034 qla_printk(KERN_WARNING, ha,
2035 "Failed to reserve interrupt %d already in use.\n",
2036 ha->pdev->irq);
2037 goto fail;
2038 }
2039 ha->flags.inta_enabled = 1;
2040 clear_risc_ints:
2041
2042 /*
2043 * FIXME: Noted that 8014s were being dropped during NK testing.
2044 * Timing deltas during MSI-X/INTa transitions?
2045 */
2046 if (IS_QLA81XX(ha))
2047 goto fail;
2048 spin_lock_irq(&ha->hardware_lock);
2049 if (IS_FWI2_CAPABLE(ha)) {
2050 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2051 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2052 } else {
2053 WRT_REG_WORD(&reg->isp.semaphore, 0);
2054 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2055 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2056 }
2057 spin_unlock_irq(&ha->hardware_lock);
2058
2059 fail:
2060 return ret;
2061 }
2062
2063 void
2064 qla2x00_free_irqs(scsi_qla_host_t *vha)
2065 {
2066 struct qla_hw_data *ha = vha->hw;
2067 struct rsp_que *rsp = ha->rsp_q_map[0];
2068
2069 if (ha->flags.msix_enabled)
2070 qla24xx_disable_msix(ha);
2071 else if (ha->flags.inta_enabled) {
2072 free_irq(ha->pdev->irq, rsp);
2073 pci_disable_msi(ha->pdev);
2074 }
2075 }
2076
2077 static struct scsi_qla_host *
2078 qla2x00_get_rsp_host(struct rsp_que *rsp)
2079 {
2080 srb_t *sp;
2081 struct qla_hw_data *ha = rsp->hw;
2082 struct scsi_qla_host *vha = NULL;
2083 struct sts_entry_24xx *pkt;
2084 struct req_que *req;
2085
2086 if (rsp->id) {
2087 pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2088 req = rsp->req;
2089 if (pkt && pkt->handle < MAX_OUTSTANDING_COMMANDS) {
2090 sp = req->outstanding_cmds[pkt->handle];
2091 if (sp)
2092 vha = sp->fcport->vha;
2093 }
2094 }
2095 if (!vha)
2096 /* handle it in base queue */
2097 vha = pci_get_drvdata(ha->pdev);
2098
2099 return vha;
2100 }
2101
2102 int qla25xx_request_irq(struct rsp_que *rsp)
2103 {
2104 struct qla_hw_data *ha = rsp->hw;
2105 struct qla_init_msix_entry *intr = &multi_rsp_queue;
2106 struct qla_msix_entry *msix = rsp->msix;
2107 int ret;
2108
2109 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2110 if (ret) {
2111 qla_printk(KERN_WARNING, ha,
2112 "MSI-X: Unable to register handler -- %x/%d.\n",
2113 msix->vector, ret);
2114 return ret;
2115 }
2116 msix->have_irq = 1;
2117 msix->rsp = rsp;
2118 return ret;
2119 }
2120
2121 void
2122 qla25xx_wrt_rsp_reg(struct qla_hw_data *ha, uint16_t id, uint16_t index)
2123 {
2124 device_reg_t __iomem *reg = (void *) ha->mqiobase + QLA_QUE_PAGE * id;
2125 WRT_REG_DWORD(&reg->isp25mq.rsp_q_out, index);
2126 }
2127
2128 void
2129 qla24xx_wrt_rsp_reg(struct qla_hw_data *ha, uint16_t id, uint16_t index)
2130 {
2131 device_reg_t __iomem *reg = (void *) ha->iobase;
2132 WRT_REG_DWORD(&reg->isp24.rsp_q_out, index);
2133 }
2134
Support for the Chinese Samsung S3C2440 based development boards