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Merge branches 'x86-alternatives-for-linus', 'x86-fpu-for-linus', 'x86-hwmon-for...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / qla2xxx / qla_isr.c
1 /*
2 * QLogic Fibre Channel HBA Driver
3 * Copyright (c) 2003-2010 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 <linux/slab.h>
11 #include <scsi/scsi_tcq.h>
12 #include <scsi/scsi_bsg_fc.h>
13 #include <scsi/scsi_eh.h>
14
15 static void qla2x00_mbx_completion(scsi_qla_host_t *, uint16_t);
16 static void qla2x00_process_completed_request(struct scsi_qla_host *,
17 struct req_que *, uint32_t);
18 static void qla2x00_status_entry(scsi_qla_host_t *, struct rsp_que *, void *);
19 static void qla2x00_status_cont_entry(struct rsp_que *, sts_cont_entry_t *);
20 static void qla2x00_error_entry(scsi_qla_host_t *, struct rsp_que *,
21 sts_entry_t *);
22
23 /**
24 * qla2100_intr_handler() - Process interrupts for the ISP2100 and ISP2200.
25 * @irq:
26 * @dev_id: SCSI driver HA context
27 *
28 * Called by system whenever the host adapter generates an interrupt.
29 *
30 * Returns handled flag.
31 */
32 irqreturn_t
33 qla2100_intr_handler(int irq, void *dev_id)
34 {
35 scsi_qla_host_t *vha;
36 struct qla_hw_data *ha;
37 struct device_reg_2xxx __iomem *reg;
38 int status;
39 unsigned long iter;
40 uint16_t hccr;
41 uint16_t mb[4];
42 struct rsp_que *rsp;
43 unsigned long flags;
44
45 rsp = (struct rsp_que *) dev_id;
46 if (!rsp) {
47 printk(KERN_INFO
48 "%s(): NULL response queue pointer\n", __func__);
49 return (IRQ_NONE);
50 }
51
52 ha = rsp->hw;
53 reg = &ha->iobase->isp;
54 status = 0;
55
56 spin_lock_irqsave(&ha->hardware_lock, flags);
57 vha = pci_get_drvdata(ha->pdev);
58 for (iter = 50; iter--; ) {
59 hccr = RD_REG_WORD(&reg->hccr);
60 if (hccr & HCCR_RISC_PAUSE) {
61 if (pci_channel_offline(ha->pdev))
62 break;
63
64 /*
65 * Issue a "HARD" reset in order for the RISC interrupt
66 * bit to be cleared. Schedule a big hammmer to get
67 * out of the RISC PAUSED state.
68 */
69 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
70 RD_REG_WORD(&reg->hccr);
71
72 ha->isp_ops->fw_dump(vha, 1);
73 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
74 break;
75 } else if ((RD_REG_WORD(&reg->istatus) & ISR_RISC_INT) == 0)
76 break;
77
78 if (RD_REG_WORD(&reg->semaphore) & BIT_0) {
79 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
80 RD_REG_WORD(&reg->hccr);
81
82 /* Get mailbox data. */
83 mb[0] = RD_MAILBOX_REG(ha, reg, 0);
84 if (mb[0] > 0x3fff && mb[0] < 0x8000) {
85 qla2x00_mbx_completion(vha, mb[0]);
86 status |= MBX_INTERRUPT;
87 } else if (mb[0] > 0x7fff && mb[0] < 0xc000) {
88 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
89 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
90 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
91 qla2x00_async_event(vha, rsp, mb);
92 } else {
93 /*EMPTY*/
94 DEBUG2(printk("scsi(%ld): Unrecognized "
95 "interrupt type (%d).\n",
96 vha->host_no, mb[0]));
97 }
98 /* Release mailbox registers. */
99 WRT_REG_WORD(&reg->semaphore, 0);
100 RD_REG_WORD(&reg->semaphore);
101 } else {
102 qla2x00_process_response_queue(rsp);
103
104 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
105 RD_REG_WORD(&reg->hccr);
106 }
107 }
108 spin_unlock_irqrestore(&ha->hardware_lock, flags);
109
110 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
111 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
112 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
113 complete(&ha->mbx_intr_comp);
114 }
115
116 return (IRQ_HANDLED);
117 }
118
119 /**
120 * qla2300_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
121 * @irq:
122 * @dev_id: SCSI driver HA context
123 *
124 * Called by system whenever the host adapter generates an interrupt.
125 *
126 * Returns handled flag.
127 */
128 irqreturn_t
129 qla2300_intr_handler(int irq, void *dev_id)
130 {
131 scsi_qla_host_t *vha;
132 struct device_reg_2xxx __iomem *reg;
133 int status;
134 unsigned long iter;
135 uint32_t stat;
136 uint16_t hccr;
137 uint16_t mb[4];
138 struct rsp_que *rsp;
139 struct qla_hw_data *ha;
140 unsigned long flags;
141
142 rsp = (struct rsp_que *) dev_id;
143 if (!rsp) {
144 printk(KERN_INFO
145 "%s(): NULL response queue pointer\n", __func__);
146 return (IRQ_NONE);
147 }
148
149 ha = rsp->hw;
150 reg = &ha->iobase->isp;
151 status = 0;
152
153 spin_lock_irqsave(&ha->hardware_lock, flags);
154 vha = pci_get_drvdata(ha->pdev);
155 for (iter = 50; iter--; ) {
156 stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
157 if (stat & HSR_RISC_PAUSED) {
158 if (unlikely(pci_channel_offline(ha->pdev)))
159 break;
160
161 hccr = RD_REG_WORD(&reg->hccr);
162 if (hccr & (BIT_15 | BIT_13 | BIT_11 | BIT_8))
163 qla_printk(KERN_INFO, ha, "Parity error -- "
164 "HCCR=%x, Dumping firmware!\n", hccr);
165 else
166 qla_printk(KERN_INFO, ha, "RISC paused -- "
167 "HCCR=%x, Dumping firmware!\n", hccr);
168
169 /*
170 * Issue a "HARD" reset in order for the RISC
171 * interrupt bit to be cleared. Schedule a big
172 * hammmer to get out of the RISC PAUSED state.
173 */
174 WRT_REG_WORD(&reg->hccr, HCCR_RESET_RISC);
175 RD_REG_WORD(&reg->hccr);
176
177 ha->isp_ops->fw_dump(vha, 1);
178 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
179 break;
180 } else if ((stat & HSR_RISC_INT) == 0)
181 break;
182
183 switch (stat & 0xff) {
184 case 0x1:
185 case 0x2:
186 case 0x10:
187 case 0x11:
188 qla2x00_mbx_completion(vha, MSW(stat));
189 status |= MBX_INTERRUPT;
190
191 /* Release mailbox registers. */
192 WRT_REG_WORD(&reg->semaphore, 0);
193 break;
194 case 0x12:
195 mb[0] = MSW(stat);
196 mb[1] = RD_MAILBOX_REG(ha, reg, 1);
197 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
198 mb[3] = RD_MAILBOX_REG(ha, reg, 3);
199 qla2x00_async_event(vha, rsp, mb);
200 break;
201 case 0x13:
202 qla2x00_process_response_queue(rsp);
203 break;
204 case 0x15:
205 mb[0] = MBA_CMPLT_1_16BIT;
206 mb[1] = MSW(stat);
207 qla2x00_async_event(vha, rsp, mb);
208 break;
209 case 0x16:
210 mb[0] = MBA_SCSI_COMPLETION;
211 mb[1] = MSW(stat);
212 mb[2] = RD_MAILBOX_REG(ha, reg, 2);
213 qla2x00_async_event(vha, rsp, mb);
214 break;
215 default:
216 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
217 "(%d).\n",
218 vha->host_no, stat & 0xff));
219 break;
220 }
221 WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
222 RD_REG_WORD_RELAXED(&reg->hccr);
223 }
224 spin_unlock_irqrestore(&ha->hardware_lock, flags);
225
226 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
227 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
228 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
229 complete(&ha->mbx_intr_comp);
230 }
231
232 return (IRQ_HANDLED);
233 }
234
235 /**
236 * qla2x00_mbx_completion() - Process mailbox command completions.
237 * @ha: SCSI driver HA context
238 * @mb0: Mailbox0 register
239 */
240 static void
241 qla2x00_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
242 {
243 uint16_t cnt;
244 uint16_t __iomem *wptr;
245 struct qla_hw_data *ha = vha->hw;
246 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
247
248 /* Load return mailbox registers. */
249 ha->flags.mbox_int = 1;
250 ha->mailbox_out[0] = mb0;
251 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 1);
252
253 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
254 if (IS_QLA2200(ha) && cnt == 8)
255 wptr = (uint16_t __iomem *)MAILBOX_REG(ha, reg, 8);
256 if (cnt == 4 || cnt == 5)
257 ha->mailbox_out[cnt] = qla2x00_debounce_register(wptr);
258 else
259 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
260
261 wptr++;
262 }
263
264 if (ha->mcp) {
265 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
266 __func__, vha->host_no, ha->mcp->mb[0]));
267 } else {
268 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
269 __func__, vha->host_no));
270 }
271 }
272
273 static void
274 qla81xx_idc_event(scsi_qla_host_t *vha, uint16_t aen, uint16_t descr)
275 {
276 static char *event[] =
277 { "Complete", "Request Notification", "Time Extension" };
278 int rval;
279 struct device_reg_24xx __iomem *reg24 = &vha->hw->iobase->isp24;
280 uint16_t __iomem *wptr;
281 uint16_t cnt, timeout, mb[QLA_IDC_ACK_REGS];
282
283 /* Seed data -- mailbox1 -> mailbox7. */
284 wptr = (uint16_t __iomem *)&reg24->mailbox1;
285 for (cnt = 0; cnt < QLA_IDC_ACK_REGS; cnt++, wptr++)
286 mb[cnt] = RD_REG_WORD(wptr);
287
288 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
289 "%04x %04x %04x %04x %04x %04x %04x.\n", vha->host_no,
290 event[aen & 0xff],
291 mb[0], mb[1], mb[2], mb[3], mb[4], mb[5], mb[6]));
292
293 /* Acknowledgement needed? [Notify && non-zero timeout]. */
294 timeout = (descr >> 8) & 0xf;
295 if (aen != MBA_IDC_NOTIFY || !timeout)
296 return;
297
298 DEBUG2(printk("scsi(%ld): Inter-Driver Commucation %s -- "
299 "ACK timeout=%d.\n", vha->host_no, event[aen & 0xff], timeout));
300
301 rval = qla2x00_post_idc_ack_work(vha, mb);
302 if (rval != QLA_SUCCESS)
303 qla_printk(KERN_WARNING, vha->hw,
304 "IDC failed to post ACK.\n");
305 }
306
307 /**
308 * qla2x00_async_event() - Process aynchronous events.
309 * @ha: SCSI driver HA context
310 * @mb: Mailbox registers (0 - 3)
311 */
312 void
313 qla2x00_async_event(scsi_qla_host_t *vha, struct rsp_que *rsp, uint16_t *mb)
314 {
315 #define LS_UNKNOWN 2
316 static char *link_speeds[] = { "1", "2", "?", "4", "8", "10" };
317 char *link_speed;
318 uint16_t handle_cnt;
319 uint16_t cnt, mbx;
320 uint32_t handles[5];
321 struct qla_hw_data *ha = vha->hw;
322 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
323 struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
324 uint32_t rscn_entry, host_pid;
325 uint8_t rscn_queue_index;
326 unsigned long flags;
327
328 /* Setup to process RIO completion. */
329 handle_cnt = 0;
330 if (IS_QLA8XXX_TYPE(ha))
331 goto skip_rio;
332 switch (mb[0]) {
333 case MBA_SCSI_COMPLETION:
334 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
335 handle_cnt = 1;
336 break;
337 case MBA_CMPLT_1_16BIT:
338 handles[0] = mb[1];
339 handle_cnt = 1;
340 mb[0] = MBA_SCSI_COMPLETION;
341 break;
342 case MBA_CMPLT_2_16BIT:
343 handles[0] = mb[1];
344 handles[1] = mb[2];
345 handle_cnt = 2;
346 mb[0] = MBA_SCSI_COMPLETION;
347 break;
348 case MBA_CMPLT_3_16BIT:
349 handles[0] = mb[1];
350 handles[1] = mb[2];
351 handles[2] = mb[3];
352 handle_cnt = 3;
353 mb[0] = MBA_SCSI_COMPLETION;
354 break;
355 case MBA_CMPLT_4_16BIT:
356 handles[0] = mb[1];
357 handles[1] = mb[2];
358 handles[2] = mb[3];
359 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
360 handle_cnt = 4;
361 mb[0] = MBA_SCSI_COMPLETION;
362 break;
363 case MBA_CMPLT_5_16BIT:
364 handles[0] = mb[1];
365 handles[1] = mb[2];
366 handles[2] = mb[3];
367 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
368 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
369 handle_cnt = 5;
370 mb[0] = MBA_SCSI_COMPLETION;
371 break;
372 case MBA_CMPLT_2_32BIT:
373 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
374 handles[1] = le32_to_cpu(
375 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
376 RD_MAILBOX_REG(ha, reg, 6));
377 handle_cnt = 2;
378 mb[0] = MBA_SCSI_COMPLETION;
379 break;
380 default:
381 break;
382 }
383 skip_rio:
384 switch (mb[0]) {
385 case MBA_SCSI_COMPLETION: /* Fast Post */
386 if (!vha->flags.online)
387 break;
388
389 for (cnt = 0; cnt < handle_cnt; cnt++)
390 qla2x00_process_completed_request(vha, rsp->req,
391 handles[cnt]);
392 break;
393
394 case MBA_RESET: /* Reset */
395 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
396 vha->host_no));
397
398 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
399 break;
400
401 case MBA_SYSTEM_ERR: /* System Error */
402 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
403 qla_printk(KERN_INFO, ha,
404 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
405 "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
406
407 ha->isp_ops->fw_dump(vha, 1);
408
409 if (IS_FWI2_CAPABLE(ha)) {
410 if (mb[1] == 0 && mb[2] == 0) {
411 qla_printk(KERN_ERR, ha,
412 "Unrecoverable Hardware Error: adapter "
413 "marked OFFLINE!\n");
414 vha->flags.online = 0;
415 } else {
416 /* Check to see if MPI timeout occured */
417 if ((mbx & MBX_3) && (ha->flags.port0))
418 set_bit(MPI_RESET_NEEDED,
419 &vha->dpc_flags);
420
421 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
422 }
423 } else if (mb[1] == 0) {
424 qla_printk(KERN_INFO, ha,
425 "Unrecoverable Hardware Error: adapter marked "
426 "OFFLINE!\n");
427 vha->flags.online = 0;
428 } else
429 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
430 break;
431
432 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
433 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
434 vha->host_no, mb[1]));
435 qla_printk(KERN_WARNING, ha,
436 "ISP Request Transfer Error (%x).\n", mb[1]);
437
438 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
439 break;
440
441 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
442 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
443 vha->host_no));
444 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
445
446 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
447 break;
448
449 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
450 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
451 vha->host_no));
452 break;
453
454 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
455 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
456 mb[1]));
457 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
458
459 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
460 atomic_set(&vha->loop_state, LOOP_DOWN);
461 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
462 qla2x00_mark_all_devices_lost(vha, 1);
463 }
464
465 if (vha->vp_idx) {
466 atomic_set(&vha->vp_state, VP_FAILED);
467 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
468 }
469
470 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
471 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
472
473 vha->flags.management_server_logged_in = 0;
474 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
475 break;
476
477 case MBA_LOOP_UP: /* Loop Up Event */
478 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
479 link_speed = link_speeds[0];
480 ha->link_data_rate = PORT_SPEED_1GB;
481 } else {
482 link_speed = link_speeds[LS_UNKNOWN];
483 if (mb[1] < 5)
484 link_speed = link_speeds[mb[1]];
485 else if (mb[1] == 0x13)
486 link_speed = link_speeds[5];
487 ha->link_data_rate = mb[1];
488 }
489
490 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
491 vha->host_no, link_speed));
492 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
493 link_speed);
494
495 vha->flags.management_server_logged_in = 0;
496 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
497 break;
498
499 case MBA_LOOP_DOWN: /* Loop Down Event */
500 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
501 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
502 "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
503 mbx));
504 qla_printk(KERN_INFO, ha,
505 "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
506 mbx);
507
508 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
509 atomic_set(&vha->loop_state, LOOP_DOWN);
510 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
511 vha->device_flags |= DFLG_NO_CABLE;
512 qla2x00_mark_all_devices_lost(vha, 1);
513 }
514
515 if (vha->vp_idx) {
516 atomic_set(&vha->vp_state, VP_FAILED);
517 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
518 }
519
520 vha->flags.management_server_logged_in = 0;
521 ha->link_data_rate = PORT_SPEED_UNKNOWN;
522 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
523 break;
524
525 case MBA_LIP_RESET: /* LIP reset occurred */
526 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
527 vha->host_no, mb[1]));
528 qla_printk(KERN_INFO, ha,
529 "LIP reset occurred (%x).\n", mb[1]);
530
531 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
532 atomic_set(&vha->loop_state, LOOP_DOWN);
533 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
534 qla2x00_mark_all_devices_lost(vha, 1);
535 }
536
537 if (vha->vp_idx) {
538 atomic_set(&vha->vp_state, VP_FAILED);
539 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
540 }
541
542 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
543
544 ha->operating_mode = LOOP;
545 vha->flags.management_server_logged_in = 0;
546 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
547 break;
548
549 /* case MBA_DCBX_COMPLETE: */
550 case MBA_POINT_TO_POINT: /* Point-to-Point */
551 if (IS_QLA2100(ha))
552 break;
553
554 if (IS_QLA8XXX_TYPE(ha)) {
555 DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
556 "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
557 if (ha->notify_dcbx_comp)
558 complete(&ha->dcbx_comp);
559
560 } else
561 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
562 "received.\n", vha->host_no));
563
564 /*
565 * Until there's a transition from loop down to loop up, treat
566 * this as loop down only.
567 */
568 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
569 atomic_set(&vha->loop_state, LOOP_DOWN);
570 if (!atomic_read(&vha->loop_down_timer))
571 atomic_set(&vha->loop_down_timer,
572 LOOP_DOWN_TIME);
573 qla2x00_mark_all_devices_lost(vha, 1);
574 }
575
576 if (vha->vp_idx) {
577 atomic_set(&vha->vp_state, VP_FAILED);
578 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
579 }
580
581 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
582 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
583
584 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
585 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
586
587 ha->flags.gpsc_supported = 1;
588 vha->flags.management_server_logged_in = 0;
589 break;
590
591 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
592 if (IS_QLA2100(ha))
593 break;
594
595 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
596 "received.\n",
597 vha->host_no));
598 qla_printk(KERN_INFO, ha,
599 "Configuration change detected: value=%x.\n", mb[1]);
600
601 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
602 atomic_set(&vha->loop_state, LOOP_DOWN);
603 if (!atomic_read(&vha->loop_down_timer))
604 atomic_set(&vha->loop_down_timer,
605 LOOP_DOWN_TIME);
606 qla2x00_mark_all_devices_lost(vha, 1);
607 }
608
609 if (vha->vp_idx) {
610 atomic_set(&vha->vp_state, VP_FAILED);
611 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
612 }
613
614 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
615 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
616 break;
617
618 case MBA_PORT_UPDATE: /* Port database update */
619 /*
620 * Handle only global and vn-port update events
621 *
622 * Relevant inputs:
623 * mb[1] = N_Port handle of changed port
624 * OR 0xffff for global event
625 * mb[2] = New login state
626 * 7 = Port logged out
627 * mb[3] = LSB is vp_idx, 0xff = all vps
628 *
629 * Skip processing if:
630 * Event is global, vp_idx is NOT all vps,
631 * vp_idx does not match
632 * Event is not global, vp_idx does not match
633 */
634 if (IS_QLA2XXX_MIDTYPE(ha) &&
635 ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
636 (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
637 break;
638
639 /* Global event -- port logout or port unavailable. */
640 if (mb[1] == 0xffff && mb[2] == 0x7) {
641 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
642 vha->host_no));
643 DEBUG(printk(KERN_INFO
644 "scsi(%ld): Port unavailable %04x %04x %04x.\n",
645 vha->host_no, mb[1], mb[2], mb[3]));
646
647 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
648 atomic_set(&vha->loop_state, LOOP_DOWN);
649 atomic_set(&vha->loop_down_timer,
650 LOOP_DOWN_TIME);
651 vha->device_flags |= DFLG_NO_CABLE;
652 qla2x00_mark_all_devices_lost(vha, 1);
653 }
654
655 if (vha->vp_idx) {
656 atomic_set(&vha->vp_state, VP_FAILED);
657 fc_vport_set_state(vha->fc_vport,
658 FC_VPORT_FAILED);
659 qla2x00_mark_all_devices_lost(vha, 1);
660 }
661
662 vha->flags.management_server_logged_in = 0;
663 ha->link_data_rate = PORT_SPEED_UNKNOWN;
664 break;
665 }
666
667 /*
668 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
669 * event etc. earlier indicating loop is down) then process
670 * it. Otherwise ignore it and Wait for RSCN to come in.
671 */
672 atomic_set(&vha->loop_down_timer, 0);
673 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
674 atomic_read(&vha->loop_state) != LOOP_DEAD) {
675 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
676 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
677 mb[2], mb[3]));
678 break;
679 }
680
681 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
682 vha->host_no));
683 DEBUG(printk(KERN_INFO
684 "scsi(%ld): Port database changed %04x %04x %04x.\n",
685 vha->host_no, mb[1], mb[2], mb[3]));
686
687 /*
688 * Mark all devices as missing so we will login again.
689 */
690 atomic_set(&vha->loop_state, LOOP_UP);
691
692 qla2x00_mark_all_devices_lost(vha, 1);
693
694 vha->flags.rscn_queue_overflow = 1;
695
696 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
697 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
698 break;
699
700 case MBA_RSCN_UPDATE: /* State Change Registration */
701 /* Check if the Vport has issued a SCR */
702 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
703 break;
704 /* Only handle SCNs for our Vport index. */
705 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
706 break;
707
708 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
709 vha->host_no));
710 DEBUG(printk(KERN_INFO
711 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
712 vha->host_no, mb[1], mb[2], mb[3]));
713
714 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
715 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
716 | vha->d_id.b.al_pa;
717 if (rscn_entry == host_pid) {
718 DEBUG(printk(KERN_INFO
719 "scsi(%ld): Ignoring RSCN update to local host "
720 "port ID (%06x)\n",
721 vha->host_no, host_pid));
722 break;
723 }
724
725 /* Ignore reserved bits from RSCN-payload. */
726 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
727 rscn_queue_index = vha->rscn_in_ptr + 1;
728 if (rscn_queue_index == MAX_RSCN_COUNT)
729 rscn_queue_index = 0;
730 if (rscn_queue_index != vha->rscn_out_ptr) {
731 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
732 vha->rscn_in_ptr = rscn_queue_index;
733 } else {
734 vha->flags.rscn_queue_overflow = 1;
735 }
736
737 atomic_set(&vha->loop_state, LOOP_UPDATE);
738 atomic_set(&vha->loop_down_timer, 0);
739 vha->flags.management_server_logged_in = 0;
740
741 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
742 set_bit(RSCN_UPDATE, &vha->dpc_flags);
743 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
744 break;
745
746 /* case MBA_RIO_RESPONSE: */
747 case MBA_ZIO_RESPONSE:
748 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
749 vha->host_no));
750
751 if (IS_FWI2_CAPABLE(ha))
752 qla24xx_process_response_queue(vha, rsp);
753 else
754 qla2x00_process_response_queue(rsp);
755 break;
756
757 case MBA_DISCARD_RND_FRAME:
758 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
759 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
760 break;
761
762 case MBA_TRACE_NOTIFICATION:
763 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
764 vha->host_no, mb[1], mb[2]));
765 break;
766
767 case MBA_ISP84XX_ALERT:
768 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
769 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
770
771 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
772 switch (mb[1]) {
773 case A84_PANIC_RECOVERY:
774 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
775 "%04x %04x\n", mb[2], mb[3]);
776 break;
777 case A84_OP_LOGIN_COMPLETE:
778 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
779 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
780 "firmware version %x\n", ha->cs84xx->op_fw_version));
781 break;
782 case A84_DIAG_LOGIN_COMPLETE:
783 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
784 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
785 "diagnostic firmware version %x\n",
786 ha->cs84xx->diag_fw_version));
787 break;
788 case A84_GOLD_LOGIN_COMPLETE:
789 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
790 ha->cs84xx->fw_update = 1;
791 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
792 "firmware version %x\n",
793 ha->cs84xx->gold_fw_version));
794 break;
795 default:
796 qla_printk(KERN_ERR, ha,
797 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
798 mb[1], mb[2], mb[3]);
799 }
800 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
801 break;
802 case MBA_DCBX_START:
803 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
804 vha->host_no, mb[1], mb[2], mb[3]));
805 break;
806 case MBA_DCBX_PARAM_UPDATE:
807 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
808 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
809 break;
810 case MBA_FCF_CONF_ERR:
811 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
812 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
813 break;
814 case MBA_IDC_COMPLETE:
815 case MBA_IDC_NOTIFY:
816 case MBA_IDC_TIME_EXT:
817 qla81xx_idc_event(vha, mb[0], mb[1]);
818 break;
819 }
820
821 if (!vha->vp_idx && ha->num_vhosts)
822 qla2x00_alert_all_vps(rsp, mb);
823 }
824
825 /**
826 * qla2x00_process_completed_request() - Process a Fast Post response.
827 * @ha: SCSI driver HA context
828 * @index: SRB index
829 */
830 static void
831 qla2x00_process_completed_request(struct scsi_qla_host *vha,
832 struct req_que *req, uint32_t index)
833 {
834 srb_t *sp;
835 struct qla_hw_data *ha = vha->hw;
836
837 /* Validate handle. */
838 if (index >= MAX_OUTSTANDING_COMMANDS) {
839 DEBUG2(printk("scsi(%ld): Invalid SCSI completion handle %d.\n",
840 vha->host_no, index));
841 qla_printk(KERN_WARNING, ha,
842 "Invalid SCSI completion handle %d.\n", index);
843
844 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
845 return;
846 }
847
848 sp = req->outstanding_cmds[index];
849 if (sp) {
850 /* Free outstanding command slot. */
851 req->outstanding_cmds[index] = NULL;
852
853 /* Save ISP completion status */
854 sp->cmd->result = DID_OK << 16;
855 qla2x00_sp_compl(ha, sp);
856 } else {
857 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
858 " handle(0x%x)\n", vha->host_no, req->id, index));
859 qla_printk(KERN_WARNING, ha,
860 "Invalid ISP SCSI completion handle\n");
861
862 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
863 }
864 }
865
866 static srb_t *
867 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
868 struct req_que *req, void *iocb)
869 {
870 struct qla_hw_data *ha = vha->hw;
871 sts_entry_t *pkt = iocb;
872 srb_t *sp = NULL;
873 uint16_t index;
874
875 index = LSW(pkt->handle);
876 if (index >= MAX_OUTSTANDING_COMMANDS) {
877 qla_printk(KERN_WARNING, ha,
878 "%s: Invalid completion handle (%x).\n", func, index);
879 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
880 goto done;
881 }
882 sp = req->outstanding_cmds[index];
883 if (!sp) {
884 qla_printk(KERN_WARNING, ha,
885 "%s: Invalid completion handle (%x) -- timed-out.\n", func,
886 index);
887 return sp;
888 }
889 if (sp->handle != index) {
890 qla_printk(KERN_WARNING, ha,
891 "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
892 index);
893 return NULL;
894 }
895
896 req->outstanding_cmds[index] = NULL;
897
898 done:
899 return sp;
900 }
901
902 static void
903 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
904 struct mbx_entry *mbx)
905 {
906 const char func[] = "MBX-IOCB";
907 const char *type;
908 fc_port_t *fcport;
909 srb_t *sp;
910 struct srb_iocb *lio;
911 struct srb_ctx *ctx;
912 uint16_t *data;
913 uint16_t status;
914
915 sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
916 if (!sp)
917 return;
918
919 ctx = sp->ctx;
920 lio = ctx->u.iocb_cmd;
921 type = ctx->name;
922 fcport = sp->fcport;
923 data = lio->u.logio.data;
924
925 data[0] = MBS_COMMAND_ERROR;
926 data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
927 QLA_LOGIO_LOGIN_RETRIED : 0;
928 if (mbx->entry_status) {
929 DEBUG2(printk(KERN_WARNING
930 "scsi(%ld:%x): Async-%s error entry - portid=%02x%02x%02x "
931 "entry-status=%x status=%x state-flag=%x "
932 "status-flags=%x.\n",
933 fcport->vha->host_no, sp->handle, type,
934 fcport->d_id.b.domain, fcport->d_id.b.area,
935 fcport->d_id.b.al_pa, mbx->entry_status,
936 le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
937 le16_to_cpu(mbx->status_flags)));
938
939 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
940
941 goto logio_done;
942 }
943
944 status = le16_to_cpu(mbx->status);
945 if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
946 le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
947 status = 0;
948 if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
949 DEBUG2(printk(KERN_DEBUG
950 "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
951 "mbx1=%x.\n",
952 fcport->vha->host_no, sp->handle, type,
953 fcport->d_id.b.domain, fcport->d_id.b.area,
954 fcport->d_id.b.al_pa, le16_to_cpu(mbx->mb1)));
955
956 data[0] = MBS_COMMAND_COMPLETE;
957 if (ctx->type == SRB_LOGIN_CMD) {
958 fcport->port_type = FCT_TARGET;
959 if (le16_to_cpu(mbx->mb1) & BIT_0)
960 fcport->port_type = FCT_INITIATOR;
961 else if (le16_to_cpu(mbx->mb1) & BIT_1)
962 fcport->flags |= FCF_FCP2_DEVICE;
963 }
964 goto logio_done;
965 }
966
967 data[0] = le16_to_cpu(mbx->mb0);
968 switch (data[0]) {
969 case MBS_PORT_ID_USED:
970 data[1] = le16_to_cpu(mbx->mb1);
971 break;
972 case MBS_LOOP_ID_USED:
973 break;
974 default:
975 data[0] = MBS_COMMAND_ERROR;
976 break;
977 }
978
979 DEBUG2(printk(KERN_WARNING
980 "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x status=%x "
981 "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
982 fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
983 fcport->d_id.b.area, fcport->d_id.b.al_pa, status,
984 le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
985 le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
986 le16_to_cpu(mbx->mb7)));
987
988 logio_done:
989 lio->done(sp);
990 }
991
992 static void
993 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
994 sts_entry_t *pkt, int iocb_type)
995 {
996 const char func[] = "CT_IOCB";
997 const char *type;
998 struct qla_hw_data *ha = vha->hw;
999 srb_t *sp;
1000 struct srb_ctx *sp_bsg;
1001 struct fc_bsg_job *bsg_job;
1002 uint16_t comp_status;
1003
1004 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1005 if (!sp)
1006 return;
1007
1008 sp_bsg = sp->ctx;
1009 bsg_job = sp_bsg->u.bsg_job;
1010
1011 type = NULL;
1012 switch (sp_bsg->type) {
1013 case SRB_CT_CMD:
1014 type = "ct pass-through";
1015 break;
1016 default:
1017 qla_printk(KERN_WARNING, ha,
1018 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1019 sp_bsg->type);
1020 return;
1021 }
1022
1023 comp_status = le16_to_cpu(pkt->comp_status);
1024
1025 /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1026 * fc payload to the caller
1027 */
1028 bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1029 bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1030
1031 if (comp_status != CS_COMPLETE) {
1032 if (comp_status == CS_DATA_UNDERRUN) {
1033 bsg_job->reply->result = DID_OK << 16;
1034 bsg_job->reply->reply_payload_rcv_len =
1035 le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1036
1037 DEBUG2(qla_printk(KERN_WARNING, ha,
1038 "scsi(%ld): CT pass-through-%s error "
1039 "comp_status-status=0x%x total_byte = 0x%x.\n",
1040 vha->host_no, type, comp_status,
1041 bsg_job->reply->reply_payload_rcv_len));
1042 } else {
1043 DEBUG2(qla_printk(KERN_WARNING, ha,
1044 "scsi(%ld): CT pass-through-%s error "
1045 "comp_status-status=0x%x.\n",
1046 vha->host_no, type, comp_status));
1047 bsg_job->reply->result = DID_ERROR << 16;
1048 bsg_job->reply->reply_payload_rcv_len = 0;
1049 }
1050 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1051 } else {
1052 bsg_job->reply->result = DID_OK << 16;;
1053 bsg_job->reply->reply_payload_rcv_len =
1054 bsg_job->reply_payload.payload_len;
1055 bsg_job->reply_len = 0;
1056 }
1057
1058 dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
1059 bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1060
1061 dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
1062 bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1063
1064 if (sp_bsg->type == SRB_ELS_CMD_HST || sp_bsg->type == SRB_CT_CMD)
1065 kfree(sp->fcport);
1066
1067 kfree(sp->ctx);
1068 mempool_free(sp, ha->srb_mempool);
1069 bsg_job->job_done(bsg_job);
1070 }
1071
1072 static void
1073 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1074 struct sts_entry_24xx *pkt, int iocb_type)
1075 {
1076 const char func[] = "ELS_CT_IOCB";
1077 const char *type;
1078 struct qla_hw_data *ha = vha->hw;
1079 srb_t *sp;
1080 struct srb_ctx *sp_bsg;
1081 struct fc_bsg_job *bsg_job;
1082 uint16_t comp_status;
1083 uint32_t fw_status[3];
1084 uint8_t* fw_sts_ptr;
1085
1086 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1087 if (!sp)
1088 return;
1089 sp_bsg = sp->ctx;
1090 bsg_job = sp_bsg->u.bsg_job;
1091
1092 type = NULL;
1093 switch (sp_bsg->type) {
1094 case SRB_ELS_CMD_RPT:
1095 case SRB_ELS_CMD_HST:
1096 type = "els";
1097 break;
1098 case SRB_CT_CMD:
1099 type = "ct pass-through";
1100 break;
1101 default:
1102 qla_printk(KERN_WARNING, ha,
1103 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1104 sp_bsg->type);
1105 return;
1106 }
1107
1108 comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1109 fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1110 fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1111
1112 /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1113 * fc payload to the caller
1114 */
1115 bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1116 bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1117
1118 if (comp_status != CS_COMPLETE) {
1119 if (comp_status == CS_DATA_UNDERRUN) {
1120 bsg_job->reply->result = DID_OK << 16;
1121 bsg_job->reply->reply_payload_rcv_len =
1122 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1123
1124 DEBUG2(qla_printk(KERN_WARNING, ha,
1125 "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1126 "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1127 vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
1128 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
1129 fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1130 memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1131 }
1132 else {
1133 DEBUG2(qla_printk(KERN_WARNING, ha,
1134 "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1135 "error subcode 1=0x%x error subcode 2=0x%x.\n",
1136 vha->host_no, sp->handle, type, comp_status,
1137 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
1138 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
1139 bsg_job->reply->result = DID_ERROR << 16;
1140 bsg_job->reply->reply_payload_rcv_len = 0;
1141 fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1142 memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1143 }
1144 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1145 }
1146 else {
1147 bsg_job->reply->result = DID_OK << 16;;
1148 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1149 bsg_job->reply_len = 0;
1150 }
1151
1152 dma_unmap_sg(&ha->pdev->dev,
1153 bsg_job->request_payload.sg_list,
1154 bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1155 dma_unmap_sg(&ha->pdev->dev,
1156 bsg_job->reply_payload.sg_list,
1157 bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1158 if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
1159 (sp_bsg->type == SRB_CT_CMD))
1160 kfree(sp->fcport);
1161 kfree(sp->ctx);
1162 mempool_free(sp, ha->srb_mempool);
1163 bsg_job->job_done(bsg_job);
1164 }
1165
1166 static void
1167 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1168 struct logio_entry_24xx *logio)
1169 {
1170 const char func[] = "LOGIO-IOCB";
1171 const char *type;
1172 fc_port_t *fcport;
1173 srb_t *sp;
1174 struct srb_iocb *lio;
1175 struct srb_ctx *ctx;
1176 uint16_t *data;
1177 uint32_t iop[2];
1178
1179 sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1180 if (!sp)
1181 return;
1182
1183 ctx = sp->ctx;
1184 lio = ctx->u.iocb_cmd;
1185 type = ctx->name;
1186 fcport = sp->fcport;
1187 data = lio->u.logio.data;
1188
1189 data[0] = MBS_COMMAND_ERROR;
1190 data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1191 QLA_LOGIO_LOGIN_RETRIED : 0;
1192 if (logio->entry_status) {
1193 DEBUG2(printk(KERN_WARNING
1194 "scsi(%ld:%x): Async-%s error entry - "
1195 "portid=%02x%02x%02x entry-status=%x.\n",
1196 fcport->vha->host_no, sp->handle, type,
1197 fcport->d_id.b.domain, fcport->d_id.b.area,
1198 fcport->d_id.b.al_pa, logio->entry_status));
1199 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1200
1201 goto logio_done;
1202 }
1203
1204 if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1205 DEBUG2(printk(KERN_DEBUG
1206 "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
1207 "iop0=%x.\n",
1208 fcport->vha->host_no, sp->handle, type,
1209 fcport->d_id.b.domain, fcport->d_id.b.area,
1210 fcport->d_id.b.al_pa,
1211 le32_to_cpu(logio->io_parameter[0])));
1212
1213 data[0] = MBS_COMMAND_COMPLETE;
1214 if (ctx->type != SRB_LOGIN_CMD)
1215 goto logio_done;
1216
1217 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1218 if (iop[0] & BIT_4) {
1219 fcport->port_type = FCT_TARGET;
1220 if (iop[0] & BIT_8)
1221 fcport->flags |= FCF_FCP2_DEVICE;
1222 } else if (iop[0] & BIT_5)
1223 fcport->port_type = FCT_INITIATOR;
1224
1225 if (logio->io_parameter[7] || logio->io_parameter[8])
1226 fcport->supported_classes |= FC_COS_CLASS2;
1227 if (logio->io_parameter[9] || logio->io_parameter[10])
1228 fcport->supported_classes |= FC_COS_CLASS3;
1229
1230 goto logio_done;
1231 }
1232
1233 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1234 iop[1] = le32_to_cpu(logio->io_parameter[1]);
1235 switch (iop[0]) {
1236 case LSC_SCODE_PORTID_USED:
1237 data[0] = MBS_PORT_ID_USED;
1238 data[1] = LSW(iop[1]);
1239 break;
1240 case LSC_SCODE_NPORT_USED:
1241 data[0] = MBS_LOOP_ID_USED;
1242 break;
1243 default:
1244 data[0] = MBS_COMMAND_ERROR;
1245 break;
1246 }
1247
1248 DEBUG2(printk(KERN_WARNING
1249 "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x comp=%x "
1250 "iop0=%x iop1=%x.\n",
1251 fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
1252 fcport->d_id.b.area, fcport->d_id.b.al_pa,
1253 le16_to_cpu(logio->comp_status),
1254 le32_to_cpu(logio->io_parameter[0]),
1255 le32_to_cpu(logio->io_parameter[1])));
1256
1257 logio_done:
1258 lio->done(sp);
1259 }
1260
1261 static void
1262 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1263 struct tsk_mgmt_entry *tsk)
1264 {
1265 const char func[] = "TMF-IOCB";
1266 const char *type;
1267 fc_port_t *fcport;
1268 srb_t *sp;
1269 struct srb_iocb *iocb;
1270 struct srb_ctx *ctx;
1271 struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1272 int error = 1;
1273
1274 sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1275 if (!sp)
1276 return;
1277
1278 ctx = sp->ctx;
1279 iocb = ctx->u.iocb_cmd;
1280 type = ctx->name;
1281 fcport = sp->fcport;
1282
1283 if (sts->entry_status) {
1284 DEBUG2(printk(KERN_WARNING
1285 "scsi(%ld:%x): Async-%s error - entry-status(%x).\n",
1286 fcport->vha->host_no, sp->handle, type,
1287 sts->entry_status));
1288 } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1289 DEBUG2(printk(KERN_WARNING
1290 "scsi(%ld:%x): Async-%s error - completion status(%x).\n",
1291 fcport->vha->host_no, sp->handle, type,
1292 sts->comp_status));
1293 } else if (!(le16_to_cpu(sts->scsi_status) &
1294 SS_RESPONSE_INFO_LEN_VALID)) {
1295 DEBUG2(printk(KERN_WARNING
1296 "scsi(%ld:%x): Async-%s error - no response info(%x).\n",
1297 fcport->vha->host_no, sp->handle, type,
1298 sts->scsi_status));
1299 } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1300 DEBUG2(printk(KERN_WARNING
1301 "scsi(%ld:%x): Async-%s error - not enough response(%d).\n",
1302 fcport->vha->host_no, sp->handle, type,
1303 sts->rsp_data_len));
1304 } else if (sts->data[3]) {
1305 DEBUG2(printk(KERN_WARNING
1306 "scsi(%ld:%x): Async-%s error - response(%x).\n",
1307 fcport->vha->host_no, sp->handle, type,
1308 sts->data[3]));
1309 } else {
1310 error = 0;
1311 }
1312
1313 if (error) {
1314 iocb->u.tmf.data = error;
1315 DEBUG2(qla2x00_dump_buffer((uint8_t *)sts, sizeof(*sts)));
1316 }
1317
1318 iocb->done(sp);
1319 }
1320
1321 /**
1322 * qla2x00_process_response_queue() - Process response queue entries.
1323 * @ha: SCSI driver HA context
1324 */
1325 void
1326 qla2x00_process_response_queue(struct rsp_que *rsp)
1327 {
1328 struct scsi_qla_host *vha;
1329 struct qla_hw_data *ha = rsp->hw;
1330 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1331 sts_entry_t *pkt;
1332 uint16_t handle_cnt;
1333 uint16_t cnt;
1334
1335 vha = pci_get_drvdata(ha->pdev);
1336
1337 if (!vha->flags.online)
1338 return;
1339
1340 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1341 pkt = (sts_entry_t *)rsp->ring_ptr;
1342
1343 rsp->ring_index++;
1344 if (rsp->ring_index == rsp->length) {
1345 rsp->ring_index = 0;
1346 rsp->ring_ptr = rsp->ring;
1347 } else {
1348 rsp->ring_ptr++;
1349 }
1350
1351 if (pkt->entry_status != 0) {
1352 DEBUG3(printk(KERN_INFO
1353 "scsi(%ld): Process error entry.\n", vha->host_no));
1354
1355 qla2x00_error_entry(vha, rsp, pkt);
1356 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1357 wmb();
1358 continue;
1359 }
1360
1361 switch (pkt->entry_type) {
1362 case STATUS_TYPE:
1363 qla2x00_status_entry(vha, rsp, pkt);
1364 break;
1365 case STATUS_TYPE_21:
1366 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1367 for (cnt = 0; cnt < handle_cnt; cnt++) {
1368 qla2x00_process_completed_request(vha, rsp->req,
1369 ((sts21_entry_t *)pkt)->handle[cnt]);
1370 }
1371 break;
1372 case STATUS_TYPE_22:
1373 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1374 for (cnt = 0; cnt < handle_cnt; cnt++) {
1375 qla2x00_process_completed_request(vha, rsp->req,
1376 ((sts22_entry_t *)pkt)->handle[cnt]);
1377 }
1378 break;
1379 case STATUS_CONT_TYPE:
1380 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1381 break;
1382 case MBX_IOCB_TYPE:
1383 qla2x00_mbx_iocb_entry(vha, rsp->req,
1384 (struct mbx_entry *)pkt);
1385 break;
1386 case CT_IOCB_TYPE:
1387 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1388 break;
1389 default:
1390 /* Type Not Supported. */
1391 DEBUG4(printk(KERN_WARNING
1392 "scsi(%ld): Received unknown response pkt type %x "
1393 "entry status=%x.\n",
1394 vha->host_no, pkt->entry_type, pkt->entry_status));
1395 break;
1396 }
1397 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1398 wmb();
1399 }
1400
1401 /* Adjust ring index */
1402 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1403 }
1404
1405 static inline void
1406
1407 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1408 uint32_t sense_len, struct rsp_que *rsp)
1409 {
1410 struct scsi_cmnd *cp = sp->cmd;
1411
1412 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1413 sense_len = SCSI_SENSE_BUFFERSIZE;
1414
1415 sp->request_sense_length = sense_len;
1416 sp->request_sense_ptr = cp->sense_buffer;
1417 if (sp->request_sense_length > par_sense_len)
1418 sense_len = par_sense_len;
1419
1420 memcpy(cp->sense_buffer, sense_data, sense_len);
1421
1422 sp->request_sense_ptr += sense_len;
1423 sp->request_sense_length -= sense_len;
1424 if (sp->request_sense_length != 0)
1425 rsp->status_srb = sp;
1426
1427 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1428 "cmd=%p\n", __func__, sp->fcport->vha->host_no,
1429 cp->device->channel, cp->device->id, cp->device->lun, cp));
1430 if (sense_len)
1431 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1432 }
1433
1434 struct scsi_dif_tuple {
1435 __be16 guard; /* Checksum */
1436 __be16 app_tag; /* APPL identifer */
1437 __be32 ref_tag; /* Target LBA or indirect LBA */
1438 };
1439
1440 /*
1441 * Checks the guard or meta-data for the type of error
1442 * detected by the HBA. In case of errors, we set the
1443 * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1444 * to indicate to the kernel that the HBA detected error.
1445 */
1446 static inline void
1447 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1448 {
1449 struct scsi_cmnd *cmd = sp->cmd;
1450 struct scsi_dif_tuple *ep =
1451 (struct scsi_dif_tuple *)&sts24->data[20];
1452 struct scsi_dif_tuple *ap =
1453 (struct scsi_dif_tuple *)&sts24->data[12];
1454 uint32_t e_ref_tag, a_ref_tag;
1455 uint16_t e_app_tag, a_app_tag;
1456 uint16_t e_guard, a_guard;
1457
1458 e_ref_tag = be32_to_cpu(ep->ref_tag);
1459 a_ref_tag = be32_to_cpu(ap->ref_tag);
1460 e_app_tag = be16_to_cpu(ep->app_tag);
1461 a_app_tag = be16_to_cpu(ap->app_tag);
1462 e_guard = be16_to_cpu(ep->guard);
1463 a_guard = be16_to_cpu(ap->guard);
1464
1465 DEBUG18(printk(KERN_DEBUG
1466 "%s(): iocb(s) %p Returned STATUS\n", __func__, sts24));
1467
1468 DEBUG18(printk(KERN_ERR "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1469 " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1470 " tag=0x%x, act guard=0x%x, exp guard=0x%x\n",
1471 cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1472 a_app_tag, e_app_tag, a_guard, e_guard));
1473
1474
1475 /* check guard */
1476 if (e_guard != a_guard) {
1477 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1478 0x10, 0x1);
1479 set_driver_byte(cmd, DRIVER_SENSE);
1480 set_host_byte(cmd, DID_ABORT);
1481 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1482 return;
1483 }
1484
1485 /* check appl tag */
1486 if (e_app_tag != a_app_tag) {
1487 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1488 0x10, 0x2);
1489 set_driver_byte(cmd, DRIVER_SENSE);
1490 set_host_byte(cmd, DID_ABORT);
1491 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1492 return;
1493 }
1494
1495 /* check ref tag */
1496 if (e_ref_tag != a_ref_tag) {
1497 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1498 0x10, 0x3);
1499 set_driver_byte(cmd, DRIVER_SENSE);
1500 set_host_byte(cmd, DID_ABORT);
1501 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1502 return;
1503 }
1504 }
1505
1506 /**
1507 * qla2x00_status_entry() - Process a Status IOCB entry.
1508 * @ha: SCSI driver HA context
1509 * @pkt: Entry pointer
1510 */
1511 static void
1512 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1513 {
1514 srb_t *sp;
1515 fc_port_t *fcport;
1516 struct scsi_cmnd *cp;
1517 sts_entry_t *sts;
1518 struct sts_entry_24xx *sts24;
1519 uint16_t comp_status;
1520 uint16_t scsi_status;
1521 uint16_t ox_id;
1522 uint8_t lscsi_status;
1523 int32_t resid;
1524 uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1525 fw_resid_len;
1526 uint8_t *rsp_info, *sense_data;
1527 struct qla_hw_data *ha = vha->hw;
1528 uint32_t handle;
1529 uint16_t que;
1530 struct req_que *req;
1531 int logit = 1;
1532
1533 sts = (sts_entry_t *) pkt;
1534 sts24 = (struct sts_entry_24xx *) pkt;
1535 if (IS_FWI2_CAPABLE(ha)) {
1536 comp_status = le16_to_cpu(sts24->comp_status);
1537 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1538 } else {
1539 comp_status = le16_to_cpu(sts->comp_status);
1540 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1541 }
1542 handle = (uint32_t) LSW(sts->handle);
1543 que = MSW(sts->handle);
1544 req = ha->req_q_map[que];
1545
1546 /* Fast path completion. */
1547 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1548 qla2x00_process_completed_request(vha, req, handle);
1549
1550 return;
1551 }
1552
1553 /* Validate handle. */
1554 if (handle < MAX_OUTSTANDING_COMMANDS) {
1555 sp = req->outstanding_cmds[handle];
1556 req->outstanding_cmds[handle] = NULL;
1557 } else
1558 sp = NULL;
1559
1560 if (sp == NULL) {
1561 qla_printk(KERN_WARNING, ha,
1562 "scsi(%ld): Invalid status handle (0x%x).\n", vha->host_no,
1563 sts->handle);
1564
1565 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1566 qla2xxx_wake_dpc(vha);
1567 return;
1568 }
1569 cp = sp->cmd;
1570 if (cp == NULL) {
1571 qla_printk(KERN_WARNING, ha,
1572 "scsi(%ld): Command already returned (0x%x/%p).\n",
1573 vha->host_no, sts->handle, sp);
1574
1575 return;
1576 }
1577
1578 lscsi_status = scsi_status & STATUS_MASK;
1579
1580 fcport = sp->fcport;
1581
1582 ox_id = 0;
1583 sense_len = par_sense_len = rsp_info_len = resid_len =
1584 fw_resid_len = 0;
1585 if (IS_FWI2_CAPABLE(ha)) {
1586 if (scsi_status & SS_SENSE_LEN_VALID)
1587 sense_len = le32_to_cpu(sts24->sense_len);
1588 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1589 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1590 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1591 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1592 if (comp_status == CS_DATA_UNDERRUN)
1593 fw_resid_len = le32_to_cpu(sts24->residual_len);
1594 rsp_info = sts24->data;
1595 sense_data = sts24->data;
1596 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1597 ox_id = le16_to_cpu(sts24->ox_id);
1598 par_sense_len = sizeof(sts24->data);
1599 } else {
1600 if (scsi_status & SS_SENSE_LEN_VALID)
1601 sense_len = le16_to_cpu(sts->req_sense_length);
1602 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1603 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1604 resid_len = le32_to_cpu(sts->residual_length);
1605 rsp_info = sts->rsp_info;
1606 sense_data = sts->req_sense_data;
1607 par_sense_len = sizeof(sts->req_sense_data);
1608 }
1609
1610 /* Check for any FCP transport errors. */
1611 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1612 /* Sense data lies beyond any FCP RESPONSE data. */
1613 if (IS_FWI2_CAPABLE(ha)) {
1614 sense_data += rsp_info_len;
1615 par_sense_len -= rsp_info_len;
1616 }
1617 if (rsp_info_len > 3 && rsp_info[3]) {
1618 DEBUG2(qla_printk(KERN_INFO, ha,
1619 "scsi(%ld:%d:%d): FCP I/O protocol failure "
1620 "(0x%x/0x%x).\n", vha->host_no, cp->device->id,
1621 cp->device->lun, rsp_info_len, rsp_info[3]));
1622
1623 cp->result = DID_BUS_BUSY << 16;
1624 goto out;
1625 }
1626 }
1627
1628 /* Check for overrun. */
1629 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1630 scsi_status & SS_RESIDUAL_OVER)
1631 comp_status = CS_DATA_OVERRUN;
1632
1633 /*
1634 * Based on Host and scsi status generate status code for Linux
1635 */
1636 switch (comp_status) {
1637 case CS_COMPLETE:
1638 case CS_QUEUE_FULL:
1639 if (scsi_status == 0) {
1640 cp->result = DID_OK << 16;
1641 break;
1642 }
1643 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1644 resid = resid_len;
1645 scsi_set_resid(cp, resid);
1646
1647 if (!lscsi_status &&
1648 ((unsigned)(scsi_bufflen(cp) - resid) <
1649 cp->underflow)) {
1650 qla_printk(KERN_INFO, ha,
1651 "scsi(%ld:%d:%d): Mid-layer underflow "
1652 "detected (0x%x of 0x%x bytes).\n",
1653 vha->host_no, cp->device->id,
1654 cp->device->lun, resid, scsi_bufflen(cp));
1655
1656 cp->result = DID_ERROR << 16;
1657 break;
1658 }
1659 }
1660 cp->result = DID_OK << 16 | lscsi_status;
1661
1662 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1663 DEBUG2(qla_printk(KERN_INFO, ha,
1664 "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1665 vha->host_no, cp->device->id, cp->device->lun));
1666 break;
1667 }
1668 logit = 0;
1669 if (lscsi_status != SS_CHECK_CONDITION)
1670 break;
1671
1672 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1673 if (!(scsi_status & SS_SENSE_LEN_VALID))
1674 break;
1675
1676 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1677 rsp);
1678 break;
1679
1680 case CS_DATA_UNDERRUN:
1681 /* Use F/W calculated residual length. */
1682 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1683 scsi_set_resid(cp, resid);
1684 if (scsi_status & SS_RESIDUAL_UNDER) {
1685 if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1686 DEBUG2(qla_printk(KERN_INFO, ha,
1687 "scsi(%ld:%d:%d) Dropped frame(s) detected "
1688 "(0x%x of 0x%x bytes).\n", vha->host_no,
1689 cp->device->id, cp->device->lun, resid,
1690 scsi_bufflen(cp)));
1691
1692 cp->result = DID_ERROR << 16 | lscsi_status;
1693 break;
1694 }
1695
1696 if (!lscsi_status &&
1697 ((unsigned)(scsi_bufflen(cp) - resid) <
1698 cp->underflow)) {
1699 qla_printk(KERN_INFO, ha,
1700 "scsi(%ld:%d:%d): Mid-layer underflow "
1701 "detected (0x%x of 0x%x bytes).\n",
1702 vha->host_no, cp->device->id,
1703 cp->device->lun, resid, scsi_bufflen(cp));
1704
1705 cp->result = DID_ERROR << 16;
1706 break;
1707 }
1708 } else {
1709 DEBUG2(qla_printk(KERN_INFO, ha,
1710 "scsi(%ld:%d:%d) Dropped frame(s) detected (0x%x "
1711 "of 0x%x bytes).\n", vha->host_no, cp->device->id,
1712 cp->device->lun, resid, scsi_bufflen(cp)));
1713
1714 cp->result = DID_ERROR << 16 | lscsi_status;
1715 goto check_scsi_status;
1716 }
1717
1718 cp->result = DID_OK << 16 | lscsi_status;
1719 logit = 0;
1720
1721 check_scsi_status:
1722 /*
1723 * Check to see if SCSI Status is non zero. If so report SCSI
1724 * Status.
1725 */
1726 if (lscsi_status != 0) {
1727 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1728 DEBUG2(qla_printk(KERN_INFO, ha,
1729 "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1730 vha->host_no, cp->device->id,
1731 cp->device->lun));
1732 logit = 1;
1733 break;
1734 }
1735 if (lscsi_status != SS_CHECK_CONDITION)
1736 break;
1737
1738 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1739 if (!(scsi_status & SS_SENSE_LEN_VALID))
1740 break;
1741
1742 qla2x00_handle_sense(sp, sense_data, par_sense_len,
1743 sense_len, rsp);
1744 }
1745 break;
1746
1747 case CS_PORT_LOGGED_OUT:
1748 case CS_PORT_CONFIG_CHG:
1749 case CS_PORT_BUSY:
1750 case CS_INCOMPLETE:
1751 case CS_PORT_UNAVAILABLE:
1752 case CS_TIMEOUT:
1753 case CS_RESET:
1754
1755 /*
1756 * We are going to have the fc class block the rport
1757 * while we try to recover so instruct the mid layer
1758 * to requeue until the class decides how to handle this.
1759 */
1760 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1761
1762 if (comp_status == CS_TIMEOUT) {
1763 if (IS_FWI2_CAPABLE(ha))
1764 break;
1765 else if ((le16_to_cpu(sts->status_flags) &
1766 SF_LOGOUT_SENT) == 0)
1767 break;
1768 }
1769
1770 DEBUG2(qla_printk(KERN_INFO, ha,
1771 "scsi(%ld:%d:%d) Port down status: port-state=0x%x\n",
1772 vha->host_no, cp->device->id, cp->device->lun,
1773 atomic_read(&fcport->state)));
1774
1775 if (atomic_read(&fcport->state) == FCS_ONLINE)
1776 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1777 break;
1778
1779 case CS_ABORTED:
1780 cp->result = DID_RESET << 16;
1781 break;
1782
1783 case CS_DIF_ERROR:
1784 qla2x00_handle_dif_error(sp, sts24);
1785 break;
1786 default:
1787 cp->result = DID_ERROR << 16;
1788 break;
1789 }
1790
1791 out:
1792 if (logit)
1793 DEBUG2(qla_printk(KERN_INFO, ha,
1794 "scsi(%ld:%d:%d) FCP command status: 0x%x-0x%x (0x%x) "
1795 "oxid=0x%x cdb=%02x%02x%02x len=0x%x "
1796 "rsp_info=0x%x resid=0x%x fw_resid=0x%x\n", vha->host_no,
1797 cp->device->id, cp->device->lun, comp_status, scsi_status,
1798 cp->result, ox_id, cp->cmnd[0],
1799 cp->cmnd[1], cp->cmnd[2], scsi_bufflen(cp), rsp_info_len,
1800 resid_len, fw_resid_len));
1801
1802 if (rsp->status_srb == NULL)
1803 qla2x00_sp_compl(ha, sp);
1804 }
1805
1806 /**
1807 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1808 * @ha: SCSI driver HA context
1809 * @pkt: Entry pointer
1810 *
1811 * Extended sense data.
1812 */
1813 static void
1814 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1815 {
1816 uint8_t sense_sz = 0;
1817 struct qla_hw_data *ha = rsp->hw;
1818 srb_t *sp = rsp->status_srb;
1819 struct scsi_cmnd *cp;
1820
1821 if (sp != NULL && sp->request_sense_length != 0) {
1822 cp = sp->cmd;
1823 if (cp == NULL) {
1824 DEBUG2(printk("%s(): Cmd already returned back to OS "
1825 "sp=%p.\n", __func__, sp));
1826 qla_printk(KERN_INFO, ha,
1827 "cmd is NULL: already returned to OS (sp=%p)\n",
1828 sp);
1829
1830 rsp->status_srb = NULL;
1831 return;
1832 }
1833
1834 if (sp->request_sense_length > sizeof(pkt->data)) {
1835 sense_sz = sizeof(pkt->data);
1836 } else {
1837 sense_sz = sp->request_sense_length;
1838 }
1839
1840 /* Move sense data. */
1841 if (IS_FWI2_CAPABLE(ha))
1842 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1843 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1844 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1845
1846 sp->request_sense_ptr += sense_sz;
1847 sp->request_sense_length -= sense_sz;
1848
1849 /* Place command on done queue. */
1850 if (sp->request_sense_length == 0) {
1851 rsp->status_srb = NULL;
1852 qla2x00_sp_compl(ha, sp);
1853 }
1854 }
1855 }
1856
1857 /**
1858 * qla2x00_error_entry() - Process an error entry.
1859 * @ha: SCSI driver HA context
1860 * @pkt: Entry pointer
1861 */
1862 static void
1863 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1864 {
1865 srb_t *sp;
1866 struct qla_hw_data *ha = vha->hw;
1867 uint32_t handle = LSW(pkt->handle);
1868 uint16_t que = MSW(pkt->handle);
1869 struct req_que *req = ha->req_q_map[que];
1870 #if defined(QL_DEBUG_LEVEL_2)
1871 if (pkt->entry_status & RF_INV_E_ORDER)
1872 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1873 else if (pkt->entry_status & RF_INV_E_COUNT)
1874 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1875 else if (pkt->entry_status & RF_INV_E_PARAM)
1876 qla_printk(KERN_ERR, ha,
1877 "%s: Invalid Entry Parameter\n", __func__);
1878 else if (pkt->entry_status & RF_INV_E_TYPE)
1879 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1880 else if (pkt->entry_status & RF_BUSY)
1881 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1882 else
1883 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1884 #endif
1885
1886 /* Validate handle. */
1887 if (handle < MAX_OUTSTANDING_COMMANDS)
1888 sp = req->outstanding_cmds[handle];
1889 else
1890 sp = NULL;
1891
1892 if (sp) {
1893 /* Free outstanding command slot. */
1894 req->outstanding_cmds[handle] = NULL;
1895
1896 /* Bad payload or header */
1897 if (pkt->entry_status &
1898 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1899 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1900 sp->cmd->result = DID_ERROR << 16;
1901 } else if (pkt->entry_status & RF_BUSY) {
1902 sp->cmd->result = DID_BUS_BUSY << 16;
1903 } else {
1904 sp->cmd->result = DID_ERROR << 16;
1905 }
1906 qla2x00_sp_compl(ha, sp);
1907
1908 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1909 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1910 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1911 vha->host_no));
1912 qla_printk(KERN_WARNING, ha,
1913 "Error entry - invalid handle\n");
1914
1915 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1916 qla2xxx_wake_dpc(vha);
1917 }
1918 }
1919
1920 /**
1921 * qla24xx_mbx_completion() - Process mailbox command completions.
1922 * @ha: SCSI driver HA context
1923 * @mb0: Mailbox0 register
1924 */
1925 static void
1926 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1927 {
1928 uint16_t cnt;
1929 uint16_t __iomem *wptr;
1930 struct qla_hw_data *ha = vha->hw;
1931 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1932
1933 /* Load return mailbox registers. */
1934 ha->flags.mbox_int = 1;
1935 ha->mailbox_out[0] = mb0;
1936 wptr = (uint16_t __iomem *)&reg->mailbox1;
1937
1938 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1939 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1940 wptr++;
1941 }
1942
1943 if (ha->mcp) {
1944 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1945 __func__, vha->host_no, ha->mcp->mb[0]));
1946 } else {
1947 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1948 __func__, vha->host_no));
1949 }
1950 }
1951
1952 /**
1953 * qla24xx_process_response_queue() - Process response queue entries.
1954 * @ha: SCSI driver HA context
1955 */
1956 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1957 struct rsp_que *rsp)
1958 {
1959 struct sts_entry_24xx *pkt;
1960 struct qla_hw_data *ha = vha->hw;
1961
1962 if (!vha->flags.online)
1963 return;
1964
1965 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1966 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1967
1968 rsp->ring_index++;
1969 if (rsp->ring_index == rsp->length) {
1970 rsp->ring_index = 0;
1971 rsp->ring_ptr = rsp->ring;
1972 } else {
1973 rsp->ring_ptr++;
1974 }
1975
1976 if (pkt->entry_status != 0) {
1977 DEBUG3(printk(KERN_INFO
1978 "scsi(%ld): Process error entry.\n", vha->host_no));
1979
1980 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1981 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1982 wmb();
1983 continue;
1984 }
1985
1986 switch (pkt->entry_type) {
1987 case STATUS_TYPE:
1988 qla2x00_status_entry(vha, rsp, pkt);
1989 break;
1990 case STATUS_CONT_TYPE:
1991 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1992 break;
1993 case VP_RPT_ID_IOCB_TYPE:
1994 qla24xx_report_id_acquisition(vha,
1995 (struct vp_rpt_id_entry_24xx *)pkt);
1996 break;
1997 case LOGINOUT_PORT_IOCB_TYPE:
1998 qla24xx_logio_entry(vha, rsp->req,
1999 (struct logio_entry_24xx *)pkt);
2000 break;
2001 case TSK_MGMT_IOCB_TYPE:
2002 qla24xx_tm_iocb_entry(vha, rsp->req,
2003 (struct tsk_mgmt_entry *)pkt);
2004 break;
2005 case CT_IOCB_TYPE:
2006 qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2007 clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
2008 break;
2009 case ELS_IOCB_TYPE:
2010 qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2011 break;
2012 default:
2013 /* Type Not Supported. */
2014 DEBUG4(printk(KERN_WARNING
2015 "scsi(%ld): Received unknown response pkt type %x "
2016 "entry status=%x.\n",
2017 vha->host_no, pkt->entry_type, pkt->entry_status));
2018 break;
2019 }
2020 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2021 wmb();
2022 }
2023
2024 /* Adjust ring index */
2025 if (IS_QLA82XX(ha)) {
2026 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2027 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2028 } else
2029 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2030 }
2031
2032 static void
2033 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2034 {
2035 int rval;
2036 uint32_t cnt;
2037 struct qla_hw_data *ha = vha->hw;
2038 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2039
2040 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
2041 return;
2042
2043 rval = QLA_SUCCESS;
2044 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2045 RD_REG_DWORD(&reg->iobase_addr);
2046 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2047 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2048 rval == QLA_SUCCESS; cnt--) {
2049 if (cnt) {
2050 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2051 udelay(10);
2052 } else
2053 rval = QLA_FUNCTION_TIMEOUT;
2054 }
2055 if (rval == QLA_SUCCESS)
2056 goto next_test;
2057
2058 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2059 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2060 rval == QLA_SUCCESS; cnt--) {
2061 if (cnt) {
2062 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2063 udelay(10);
2064 } else
2065 rval = QLA_FUNCTION_TIMEOUT;
2066 }
2067 if (rval != QLA_SUCCESS)
2068 goto done;
2069
2070 next_test:
2071 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2072 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
2073
2074 done:
2075 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2076 RD_REG_DWORD(&reg->iobase_window);
2077 }
2078
2079 /**
2080 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
2081 * @irq:
2082 * @dev_id: SCSI driver HA context
2083 *
2084 * Called by system whenever the host adapter generates an interrupt.
2085 *
2086 * Returns handled flag.
2087 */
2088 irqreturn_t
2089 qla24xx_intr_handler(int irq, void *dev_id)
2090 {
2091 scsi_qla_host_t *vha;
2092 struct qla_hw_data *ha;
2093 struct device_reg_24xx __iomem *reg;
2094 int status;
2095 unsigned long iter;
2096 uint32_t stat;
2097 uint32_t hccr;
2098 uint16_t mb[4];
2099 struct rsp_que *rsp;
2100 unsigned long flags;
2101
2102 rsp = (struct rsp_que *) dev_id;
2103 if (!rsp) {
2104 printk(KERN_INFO
2105 "%s(): NULL response queue pointer\n", __func__);
2106 return IRQ_NONE;
2107 }
2108
2109 ha = rsp->hw;
2110 reg = &ha->iobase->isp24;
2111 status = 0;
2112
2113 if (unlikely(pci_channel_offline(ha->pdev)))
2114 return IRQ_HANDLED;
2115
2116 spin_lock_irqsave(&ha->hardware_lock, flags);
2117 vha = pci_get_drvdata(ha->pdev);
2118 for (iter = 50; iter--; ) {
2119 stat = RD_REG_DWORD(&reg->host_status);
2120 if (stat & HSRX_RISC_PAUSED) {
2121 if (unlikely(pci_channel_offline(ha->pdev)))
2122 break;
2123
2124 hccr = RD_REG_DWORD(&reg->hccr);
2125
2126 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2127 "Dumping firmware!\n", hccr);
2128
2129 qla2xxx_check_risc_status(vha);
2130
2131 ha->isp_ops->fw_dump(vha, 1);
2132 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2133 break;
2134 } else if ((stat & HSRX_RISC_INT) == 0)
2135 break;
2136
2137 switch (stat & 0xff) {
2138 case 0x1:
2139 case 0x2:
2140 case 0x10:
2141 case 0x11:
2142 qla24xx_mbx_completion(vha, MSW(stat));
2143 status |= MBX_INTERRUPT;
2144
2145 break;
2146 case 0x12:
2147 mb[0] = MSW(stat);
2148 mb[1] = RD_REG_WORD(&reg->mailbox1);
2149 mb[2] = RD_REG_WORD(&reg->mailbox2);
2150 mb[3] = RD_REG_WORD(&reg->mailbox3);
2151 qla2x00_async_event(vha, rsp, mb);
2152 break;
2153 case 0x13:
2154 case 0x14:
2155 qla24xx_process_response_queue(vha, rsp);
2156 break;
2157 default:
2158 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2159 "(%d).\n",
2160 vha->host_no, stat & 0xff));
2161 break;
2162 }
2163 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2164 RD_REG_DWORD_RELAXED(&reg->hccr);
2165 }
2166 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2167
2168 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2169 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2170 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2171 complete(&ha->mbx_intr_comp);
2172 }
2173
2174 return IRQ_HANDLED;
2175 }
2176
2177 static irqreturn_t
2178 qla24xx_msix_rsp_q(int irq, void *dev_id)
2179 {
2180 struct qla_hw_data *ha;
2181 struct rsp_que *rsp;
2182 struct device_reg_24xx __iomem *reg;
2183 struct scsi_qla_host *vha;
2184 unsigned long flags;
2185
2186 rsp = (struct rsp_que *) dev_id;
2187 if (!rsp) {
2188 printk(KERN_INFO
2189 "%s(): NULL response queue pointer\n", __func__);
2190 return IRQ_NONE;
2191 }
2192 ha = rsp->hw;
2193 reg = &ha->iobase->isp24;
2194
2195 spin_lock_irqsave(&ha->hardware_lock, flags);
2196
2197 vha = pci_get_drvdata(ha->pdev);
2198 qla24xx_process_response_queue(vha, rsp);
2199 if (!ha->flags.disable_msix_handshake) {
2200 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2201 RD_REG_DWORD_RELAXED(&reg->hccr);
2202 }
2203 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2204
2205 return IRQ_HANDLED;
2206 }
2207
2208 static irqreturn_t
2209 qla25xx_msix_rsp_q(int irq, void *dev_id)
2210 {
2211 struct qla_hw_data *ha;
2212 struct rsp_que *rsp;
2213 struct device_reg_24xx __iomem *reg;
2214 unsigned long flags;
2215
2216 rsp = (struct rsp_que *) dev_id;
2217 if (!rsp) {
2218 printk(KERN_INFO
2219 "%s(): NULL response queue pointer\n", __func__);
2220 return IRQ_NONE;
2221 }
2222 ha = rsp->hw;
2223
2224 /* Clear the interrupt, if enabled, for this response queue */
2225 if (rsp->options & ~BIT_6) {
2226 reg = &ha->iobase->isp24;
2227 spin_lock_irqsave(&ha->hardware_lock, flags);
2228 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2229 RD_REG_DWORD_RELAXED(&reg->hccr);
2230 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2231 }
2232 queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2233
2234 return IRQ_HANDLED;
2235 }
2236
2237 static irqreturn_t
2238 qla24xx_msix_default(int irq, void *dev_id)
2239 {
2240 scsi_qla_host_t *vha;
2241 struct qla_hw_data *ha;
2242 struct rsp_que *rsp;
2243 struct device_reg_24xx __iomem *reg;
2244 int status;
2245 uint32_t stat;
2246 uint32_t hccr;
2247 uint16_t mb[4];
2248 unsigned long flags;
2249
2250 rsp = (struct rsp_que *) dev_id;
2251 if (!rsp) {
2252 DEBUG(printk(
2253 "%s(): NULL response queue pointer\n", __func__));
2254 return IRQ_NONE;
2255 }
2256 ha = rsp->hw;
2257 reg = &ha->iobase->isp24;
2258 status = 0;
2259
2260 spin_lock_irqsave(&ha->hardware_lock, flags);
2261 vha = pci_get_drvdata(ha->pdev);
2262 do {
2263 stat = RD_REG_DWORD(&reg->host_status);
2264 if (stat & HSRX_RISC_PAUSED) {
2265 if (unlikely(pci_channel_offline(ha->pdev)))
2266 break;
2267
2268 hccr = RD_REG_DWORD(&reg->hccr);
2269
2270 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2271 "Dumping firmware!\n", hccr);
2272
2273 qla2xxx_check_risc_status(vha);
2274
2275 ha->isp_ops->fw_dump(vha, 1);
2276 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2277 break;
2278 } else if ((stat & HSRX_RISC_INT) == 0)
2279 break;
2280
2281 switch (stat & 0xff) {
2282 case 0x1:
2283 case 0x2:
2284 case 0x10:
2285 case 0x11:
2286 qla24xx_mbx_completion(vha, MSW(stat));
2287 status |= MBX_INTERRUPT;
2288
2289 break;
2290 case 0x12:
2291 mb[0] = MSW(stat);
2292 mb[1] = RD_REG_WORD(&reg->mailbox1);
2293 mb[2] = RD_REG_WORD(&reg->mailbox2);
2294 mb[3] = RD_REG_WORD(&reg->mailbox3);
2295 qla2x00_async_event(vha, rsp, mb);
2296 break;
2297 case 0x13:
2298 case 0x14:
2299 qla24xx_process_response_queue(vha, rsp);
2300 break;
2301 default:
2302 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2303 "(%d).\n",
2304 vha->host_no, stat & 0xff));
2305 break;
2306 }
2307 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2308 } while (0);
2309 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2310
2311 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2312 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2313 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2314 complete(&ha->mbx_intr_comp);
2315 }
2316 return IRQ_HANDLED;
2317 }
2318
2319 /* Interrupt handling helpers. */
2320
2321 struct qla_init_msix_entry {
2322 const char *name;
2323 irq_handler_t handler;
2324 };
2325
2326 static struct qla_init_msix_entry msix_entries[3] = {
2327 { "qla2xxx (default)", qla24xx_msix_default },
2328 { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2329 { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2330 };
2331
2332 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2333 { "qla2xxx (default)", qla82xx_msix_default },
2334 { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2335 };
2336
2337 static void
2338 qla24xx_disable_msix(struct qla_hw_data *ha)
2339 {
2340 int i;
2341 struct qla_msix_entry *qentry;
2342
2343 for (i = 0; i < ha->msix_count; i++) {
2344 qentry = &ha->msix_entries[i];
2345 if (qentry->have_irq)
2346 free_irq(qentry->vector, qentry->rsp);
2347 }
2348 pci_disable_msix(ha->pdev);
2349 kfree(ha->msix_entries);
2350 ha->msix_entries = NULL;
2351 ha->flags.msix_enabled = 0;
2352 }
2353
2354 static int
2355 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2356 {
2357 #define MIN_MSIX_COUNT 2
2358 int i, ret;
2359 struct msix_entry *entries;
2360 struct qla_msix_entry *qentry;
2361
2362 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2363 GFP_KERNEL);
2364 if (!entries)
2365 return -ENOMEM;
2366
2367 for (i = 0; i < ha->msix_count; i++)
2368 entries[i].entry = i;
2369
2370 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2371 if (ret) {
2372 if (ret < MIN_MSIX_COUNT)
2373 goto msix_failed;
2374
2375 qla_printk(KERN_WARNING, ha,
2376 "MSI-X: Failed to enable support -- %d/%d\n"
2377 " Retry with %d vectors\n", ha->msix_count, ret, ret);
2378 ha->msix_count = ret;
2379 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2380 if (ret) {
2381 msix_failed:
2382 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2383 " support, giving up -- %d/%d\n",
2384 ha->msix_count, ret);
2385 goto msix_out;
2386 }
2387 ha->max_rsp_queues = ha->msix_count - 1;
2388 }
2389 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2390 ha->msix_count, GFP_KERNEL);
2391 if (!ha->msix_entries) {
2392 ret = -ENOMEM;
2393 goto msix_out;
2394 }
2395 ha->flags.msix_enabled = 1;
2396
2397 for (i = 0; i < ha->msix_count; i++) {
2398 qentry = &ha->msix_entries[i];
2399 qentry->vector = entries[i].vector;
2400 qentry->entry = entries[i].entry;
2401 qentry->have_irq = 0;
2402 qentry->rsp = NULL;
2403 }
2404
2405 /* Enable MSI-X vectors for the base queue */
2406 for (i = 0; i < 2; i++) {
2407 qentry = &ha->msix_entries[i];
2408 if (IS_QLA82XX(ha)) {
2409 ret = request_irq(qentry->vector,
2410 qla82xx_msix_entries[i].handler,
2411 0, qla82xx_msix_entries[i].name, rsp);
2412 } else {
2413 ret = request_irq(qentry->vector,
2414 msix_entries[i].handler,
2415 0, msix_entries[i].name, rsp);
2416 }
2417 if (ret) {
2418 qla_printk(KERN_WARNING, ha,
2419 "MSI-X: Unable to register handler -- %x/%d.\n",
2420 qentry->vector, ret);
2421 qla24xx_disable_msix(ha);
2422 ha->mqenable = 0;
2423 goto msix_out;
2424 }
2425 qentry->have_irq = 1;
2426 qentry->rsp = rsp;
2427 rsp->msix = qentry;
2428 }
2429
2430 /* Enable MSI-X vector for response queue update for queue 0 */
2431 if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2432 ha->mqenable = 1;
2433
2434 msix_out:
2435 kfree(entries);
2436 return ret;
2437 }
2438
2439 int
2440 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2441 {
2442 int ret;
2443 device_reg_t __iomem *reg = ha->iobase;
2444
2445 /* If possible, enable MSI-X. */
2446 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2447 !IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2448 goto skip_msi;
2449
2450 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2451 (ha->pdev->subsystem_device == 0x7040 ||
2452 ha->pdev->subsystem_device == 0x7041 ||
2453 ha->pdev->subsystem_device == 0x1705)) {
2454 DEBUG2(qla_printk(KERN_WARNING, ha,
2455 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
2456 ha->pdev->subsystem_vendor,
2457 ha->pdev->subsystem_device));
2458 goto skip_msi;
2459 }
2460
2461 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2462 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2463 DEBUG2(qla_printk(KERN_WARNING, ha,
2464 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2465 ha->pdev->revision, ha->fw_attributes));
2466 goto skip_msix;
2467 }
2468
2469 ret = qla24xx_enable_msix(ha, rsp);
2470 if (!ret) {
2471 DEBUG2(qla_printk(KERN_INFO, ha,
2472 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2473 ha->fw_attributes));
2474 goto clear_risc_ints;
2475 }
2476 qla_printk(KERN_WARNING, ha,
2477 "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
2478 skip_msix:
2479
2480 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2481 !IS_QLA8001(ha))
2482 goto skip_msi;
2483
2484 ret = pci_enable_msi(ha->pdev);
2485 if (!ret) {
2486 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2487 ha->flags.msi_enabled = 1;
2488 } else
2489 qla_printk(KERN_WARNING, ha,
2490 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2491 skip_msi:
2492
2493 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2494 ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2495 QLA2XXX_DRIVER_NAME, rsp);
2496 if (ret) {
2497 qla_printk(KERN_WARNING, ha,
2498 "Failed to reserve interrupt %d already in use.\n",
2499 ha->pdev->irq);
2500 goto fail;
2501 }
2502
2503 clear_risc_ints:
2504
2505 /*
2506 * FIXME: Noted that 8014s were being dropped during NK testing.
2507 * Timing deltas during MSI-X/INTa transitions?
2508 */
2509 if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2510 goto fail;
2511 spin_lock_irq(&ha->hardware_lock);
2512 if (IS_FWI2_CAPABLE(ha)) {
2513 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2514 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2515 } else {
2516 WRT_REG_WORD(&reg->isp.semaphore, 0);
2517 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2518 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2519 }
2520 spin_unlock_irq(&ha->hardware_lock);
2521
2522 fail:
2523 return ret;
2524 }
2525
2526 void
2527 qla2x00_free_irqs(scsi_qla_host_t *vha)
2528 {
2529 struct qla_hw_data *ha = vha->hw;
2530 struct rsp_que *rsp = ha->rsp_q_map[0];
2531
2532 if (ha->flags.msix_enabled)
2533 qla24xx_disable_msix(ha);
2534 else if (ha->flags.msi_enabled) {
2535 free_irq(ha->pdev->irq, rsp);
2536 pci_disable_msi(ha->pdev);
2537 } else
2538 free_irq(ha->pdev->irq, rsp);
2539 }
2540
2541
2542 int qla25xx_request_irq(struct rsp_que *rsp)
2543 {
2544 struct qla_hw_data *ha = rsp->hw;
2545 struct qla_init_msix_entry *intr = &msix_entries[2];
2546 struct qla_msix_entry *msix = rsp->msix;
2547 int ret;
2548
2549 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2550 if (ret) {
2551 qla_printk(KERN_WARNING, ha,
2552 "MSI-X: Unable to register handler -- %x/%d.\n",
2553 msix->vector, ret);
2554 return ret;
2555 }
2556 msix->have_irq = 1;
2557 msix->rsp = rsp;
2558 return ret;
2559 }
kernel source for telekom puls (alcatel/mediatek)