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staging: usbip: bugfix for isochronous packets and optimization
[zen-stable.git] / drivers / scsi / qla2xxx / qla_isr.c
blobd17ed9a94a0ca56f1a9b9dcc2b1ab1a52fd6a09b
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 struct device_reg_82xx __iomem *reg82 = &ha->iobase->isp82;
325 uint32_t rscn_entry, host_pid;
326 uint8_t rscn_queue_index;
327 unsigned long flags;
328
329 /* Setup to process RIO completion. */
330 handle_cnt = 0;
331 if (IS_QLA8XXX_TYPE(ha))
332 goto skip_rio;
333 switch (mb[0]) {
334 case MBA_SCSI_COMPLETION:
335 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
336 handle_cnt = 1;
337 break;
338 case MBA_CMPLT_1_16BIT:
339 handles[0] = mb[1];
340 handle_cnt = 1;
341 mb[0] = MBA_SCSI_COMPLETION;
342 break;
343 case MBA_CMPLT_2_16BIT:
344 handles[0] = mb[1];
345 handles[1] = mb[2];
346 handle_cnt = 2;
347 mb[0] = MBA_SCSI_COMPLETION;
348 break;
349 case MBA_CMPLT_3_16BIT:
350 handles[0] = mb[1];
351 handles[1] = mb[2];
352 handles[2] = mb[3];
353 handle_cnt = 3;
354 mb[0] = MBA_SCSI_COMPLETION;
355 break;
356 case MBA_CMPLT_4_16BIT:
357 handles[0] = mb[1];
358 handles[1] = mb[2];
359 handles[2] = mb[3];
360 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
361 handle_cnt = 4;
362 mb[0] = MBA_SCSI_COMPLETION;
363 break;
364 case MBA_CMPLT_5_16BIT:
365 handles[0] = mb[1];
366 handles[1] = mb[2];
367 handles[2] = mb[3];
368 handles[3] = (uint32_t)RD_MAILBOX_REG(ha, reg, 6);
369 handles[4] = (uint32_t)RD_MAILBOX_REG(ha, reg, 7);
370 handle_cnt = 5;
371 mb[0] = MBA_SCSI_COMPLETION;
372 break;
373 case MBA_CMPLT_2_32BIT:
374 handles[0] = le32_to_cpu((uint32_t)((mb[2] << 16) | mb[1]));
375 handles[1] = le32_to_cpu(
376 ((uint32_t)(RD_MAILBOX_REG(ha, reg, 7) << 16)) |
377 RD_MAILBOX_REG(ha, reg, 6));
378 handle_cnt = 2;
379 mb[0] = MBA_SCSI_COMPLETION;
380 break;
381 default:
382 break;
383 }
384 skip_rio:
385 switch (mb[0]) {
386 case MBA_SCSI_COMPLETION: /* Fast Post */
387 if (!vha->flags.online)
388 break;
389
390 for (cnt = 0; cnt < handle_cnt; cnt++)
391 qla2x00_process_completed_request(vha, rsp->req,
392 handles[cnt]);
393 break;
394
395 case MBA_RESET: /* Reset */
396 DEBUG2(printk("scsi(%ld): Asynchronous RESET.\n",
397 vha->host_no));
398
399 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
400 break;
401
402 case MBA_SYSTEM_ERR: /* System Error */
403 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox7) : 0;
404 qla_printk(KERN_INFO, ha,
405 "ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh "
406 "mbx7=%xh.\n", mb[1], mb[2], mb[3], mbx);
407
408 ha->isp_ops->fw_dump(vha, 1);
409
410 if (IS_FWI2_CAPABLE(ha)) {
411 if (mb[1] == 0 && mb[2] == 0) {
412 qla_printk(KERN_ERR, ha,
413 "Unrecoverable Hardware Error: adapter "
414 "marked OFFLINE!\n");
415 vha->flags.online = 0;
416 } else {
417 /* Check to see if MPI timeout occured */
418 if ((mbx & MBX_3) && (ha->flags.port0))
419 set_bit(MPI_RESET_NEEDED,
420 &vha->dpc_flags);
421
422 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
423 }
424 } else if (mb[1] == 0) {
425 qla_printk(KERN_INFO, ha,
426 "Unrecoverable Hardware Error: adapter marked "
427 "OFFLINE!\n");
428 vha->flags.online = 0;
429 } else
430 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
431 break;
432
433 case MBA_REQ_TRANSFER_ERR: /* Request Transfer Error */
434 DEBUG2(printk("scsi(%ld): ISP Request Transfer Error (%x).\n",
435 vha->host_no, mb[1]));
436 qla_printk(KERN_WARNING, ha,
437 "ISP Request Transfer Error (%x).\n", mb[1]);
438
439 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
440 break;
441
442 case MBA_RSP_TRANSFER_ERR: /* Response Transfer Error */
443 DEBUG2(printk("scsi(%ld): ISP Response Transfer Error.\n",
444 vha->host_no));
445 qla_printk(KERN_WARNING, ha, "ISP Response Transfer Error.\n");
446
447 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
448 break;
449
450 case MBA_WAKEUP_THRES: /* Request Queue Wake-up */
451 DEBUG2(printk("scsi(%ld): Asynchronous WAKEUP_THRES.\n",
452 vha->host_no));
453 break;
454
455 case MBA_LIP_OCCURRED: /* Loop Initialization Procedure */
456 DEBUG2(printk("scsi(%ld): LIP occurred (%x).\n", vha->host_no,
457 mb[1]));
458 qla_printk(KERN_INFO, ha, "LIP occurred (%x).\n", mb[1]);
459
460 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
461 atomic_set(&vha->loop_state, LOOP_DOWN);
462 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
463 qla2x00_mark_all_devices_lost(vha, 1);
464 }
465
466 if (vha->vp_idx) {
467 atomic_set(&vha->vp_state, VP_FAILED);
468 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
469 }
470
471 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
472 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
473
474 vha->flags.management_server_logged_in = 0;
475 qla2x00_post_aen_work(vha, FCH_EVT_LIP, mb[1]);
476 break;
477
478 case MBA_LOOP_UP: /* Loop Up Event */
479 if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
480 link_speed = link_speeds[0];
481 ha->link_data_rate = PORT_SPEED_1GB;
482 } else {
483 link_speed = link_speeds[LS_UNKNOWN];
484 if (mb[1] < 5)
485 link_speed = link_speeds[mb[1]];
486 else if (mb[1] == 0x13)
487 link_speed = link_speeds[5];
488 ha->link_data_rate = mb[1];
489 }
490
491 DEBUG2(printk("scsi(%ld): Asynchronous LOOP UP (%s Gbps).\n",
492 vha->host_no, link_speed));
493 qla_printk(KERN_INFO, ha, "LOOP UP detected (%s Gbps).\n",
494 link_speed);
495
496 vha->flags.management_server_logged_in = 0;
497 qla2x00_post_aen_work(vha, FCH_EVT_LINKUP, ha->link_data_rate);
498 break;
499
500 case MBA_LOOP_DOWN: /* Loop Down Event */
501 mbx = IS_QLA81XX(ha) ? RD_REG_WORD(&reg24->mailbox4) : 0;
502 mbx = IS_QLA82XX(ha) ? RD_REG_WORD(&reg82->mailbox_out[4]) : mbx;
503 DEBUG2(printk("scsi(%ld): Asynchronous LOOP DOWN "
504 "(%x %x %x %x).\n", vha->host_no, mb[1], mb[2], mb[3],
505 mbx));
506 qla_printk(KERN_INFO, ha,
507 "LOOP DOWN detected (%x %x %x %x).\n", mb[1], mb[2], mb[3],
508 mbx);
509
510 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
511 atomic_set(&vha->loop_state, LOOP_DOWN);
512 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
513 vha->device_flags |= DFLG_NO_CABLE;
514 qla2x00_mark_all_devices_lost(vha, 1);
515 }
516
517 if (vha->vp_idx) {
518 atomic_set(&vha->vp_state, VP_FAILED);
519 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
520 }
521
522 vha->flags.management_server_logged_in = 0;
523 ha->link_data_rate = PORT_SPEED_UNKNOWN;
524 qla2x00_post_aen_work(vha, FCH_EVT_LINKDOWN, 0);
525 break;
526
527 case MBA_LIP_RESET: /* LIP reset occurred */
528 DEBUG2(printk("scsi(%ld): Asynchronous LIP RESET (%x).\n",
529 vha->host_no, mb[1]));
530 qla_printk(KERN_INFO, ha,
531 "LIP reset occurred (%x).\n", mb[1]);
532
533 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
534 atomic_set(&vha->loop_state, LOOP_DOWN);
535 atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
536 qla2x00_mark_all_devices_lost(vha, 1);
537 }
538
539 if (vha->vp_idx) {
540 atomic_set(&vha->vp_state, VP_FAILED);
541 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
542 }
543
544 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
545
546 ha->operating_mode = LOOP;
547 vha->flags.management_server_logged_in = 0;
548 qla2x00_post_aen_work(vha, FCH_EVT_LIPRESET, mb[1]);
549 break;
550
551 /* case MBA_DCBX_COMPLETE: */
552 case MBA_POINT_TO_POINT: /* Point-to-Point */
553 if (IS_QLA2100(ha))
554 break;
555
556 if (IS_QLA8XXX_TYPE(ha)) {
557 DEBUG2(printk("scsi(%ld): DCBX Completed -- %04x %04x "
558 "%04x\n", vha->host_no, mb[1], mb[2], mb[3]));
559 if (ha->notify_dcbx_comp)
560 complete(&ha->dcbx_comp);
561
562 } else
563 DEBUG2(printk("scsi(%ld): Asynchronous P2P MODE "
564 "received.\n", vha->host_no));
565
566 /*
567 * Until there's a transition from loop down to loop up, treat
568 * this as loop down only.
569 */
570 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
571 atomic_set(&vha->loop_state, LOOP_DOWN);
572 if (!atomic_read(&vha->loop_down_timer))
573 atomic_set(&vha->loop_down_timer,
574 LOOP_DOWN_TIME);
575 qla2x00_mark_all_devices_lost(vha, 1);
576 }
577
578 if (vha->vp_idx) {
579 atomic_set(&vha->vp_state, VP_FAILED);
580 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
581 }
582
583 if (!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags)))
584 set_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
585
586 set_bit(REGISTER_FC4_NEEDED, &vha->dpc_flags);
587 set_bit(REGISTER_FDMI_NEEDED, &vha->dpc_flags);
588
589 ha->flags.gpsc_supported = 1;
590 vha->flags.management_server_logged_in = 0;
591 break;
592
593 case MBA_CHG_IN_CONNECTION: /* Change in connection mode */
594 if (IS_QLA2100(ha))
595 break;
596
597 DEBUG2(printk("scsi(%ld): Asynchronous Change In Connection "
598 "received.\n",
599 vha->host_no));
600 qla_printk(KERN_INFO, ha,
601 "Configuration change detected: value=%x.\n", mb[1]);
602
603 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
604 atomic_set(&vha->loop_state, LOOP_DOWN);
605 if (!atomic_read(&vha->loop_down_timer))
606 atomic_set(&vha->loop_down_timer,
607 LOOP_DOWN_TIME);
608 qla2x00_mark_all_devices_lost(vha, 1);
609 }
610
611 if (vha->vp_idx) {
612 atomic_set(&vha->vp_state, VP_FAILED);
613 fc_vport_set_state(vha->fc_vport, FC_VPORT_FAILED);
614 }
615
616 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
617 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
618 break;
619
620 case MBA_PORT_UPDATE: /* Port database update */
621 /*
622 * Handle only global and vn-port update events
623 *
624 * Relevant inputs:
625 * mb[1] = N_Port handle of changed port
626 * OR 0xffff for global event
627 * mb[2] = New login state
628 * 7 = Port logged out
629 * mb[3] = LSB is vp_idx, 0xff = all vps
630 *
631 * Skip processing if:
632 * Event is global, vp_idx is NOT all vps,
633 * vp_idx does not match
634 * Event is not global, vp_idx does not match
635 */
636 if (IS_QLA2XXX_MIDTYPE(ha) &&
637 ((mb[1] == 0xffff && (mb[3] & 0xff) != 0xff) ||
638 (mb[1] != 0xffff)) && vha->vp_idx != (mb[3] & 0xff))
639 break;
640
641 /* Global event -- port logout or port unavailable. */
642 if (mb[1] == 0xffff && mb[2] == 0x7) {
643 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
644 vha->host_no));
645 DEBUG(printk(KERN_INFO
646 "scsi(%ld): Port unavailable %04x %04x %04x.\n",
647 vha->host_no, mb[1], mb[2], mb[3]));
648
649 if (atomic_read(&vha->loop_state) != LOOP_DOWN) {
650 atomic_set(&vha->loop_state, LOOP_DOWN);
651 atomic_set(&vha->loop_down_timer,
652 LOOP_DOWN_TIME);
653 vha->device_flags |= DFLG_NO_CABLE;
654 qla2x00_mark_all_devices_lost(vha, 1);
655 }
656
657 if (vha->vp_idx) {
658 atomic_set(&vha->vp_state, VP_FAILED);
659 fc_vport_set_state(vha->fc_vport,
660 FC_VPORT_FAILED);
661 qla2x00_mark_all_devices_lost(vha, 1);
662 }
663
664 vha->flags.management_server_logged_in = 0;
665 ha->link_data_rate = PORT_SPEED_UNKNOWN;
666 break;
667 }
668
669 /*
670 * If PORT UPDATE is global (received LIP_OCCURRED/LIP_RESET
671 * event etc. earlier indicating loop is down) then process
672 * it. Otherwise ignore it and Wait for RSCN to come in.
673 */
674 atomic_set(&vha->loop_down_timer, 0);
675 if (atomic_read(&vha->loop_state) != LOOP_DOWN &&
676 atomic_read(&vha->loop_state) != LOOP_DEAD) {
677 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE "
678 "ignored %04x/%04x/%04x.\n", vha->host_no, mb[1],
679 mb[2], mb[3]));
680 break;
681 }
682
683 DEBUG2(printk("scsi(%ld): Asynchronous PORT UPDATE.\n",
684 vha->host_no));
685 DEBUG(printk(KERN_INFO
686 "scsi(%ld): Port database changed %04x %04x %04x.\n",
687 vha->host_no, mb[1], mb[2], mb[3]));
688
689 /*
690 * Mark all devices as missing so we will login again.
691 */
692 atomic_set(&vha->loop_state, LOOP_UP);
693
694 qla2x00_mark_all_devices_lost(vha, 1);
695
696 vha->flags.rscn_queue_overflow = 1;
697
698 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
699 set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
700 break;
701
702 case MBA_RSCN_UPDATE: /* State Change Registration */
703 /* Check if the Vport has issued a SCR */
704 if (vha->vp_idx && test_bit(VP_SCR_NEEDED, &vha->vp_flags))
705 break;
706 /* Only handle SCNs for our Vport index. */
707 if (ha->flags.npiv_supported && vha->vp_idx != (mb[3] & 0xff))
708 break;
709
710 DEBUG2(printk("scsi(%ld): Asynchronous RSCR UPDATE.\n",
711 vha->host_no));
712 DEBUG(printk(KERN_INFO
713 "scsi(%ld): RSCN database changed -- %04x %04x %04x.\n",
714 vha->host_no, mb[1], mb[2], mb[3]));
715
716 rscn_entry = ((mb[1] & 0xff) << 16) | mb[2];
717 host_pid = (vha->d_id.b.domain << 16) | (vha->d_id.b.area << 8)
718 | vha->d_id.b.al_pa;
719 if (rscn_entry == host_pid) {
720 DEBUG(printk(KERN_INFO
721 "scsi(%ld): Ignoring RSCN update to local host "
722 "port ID (%06x)\n",
723 vha->host_no, host_pid));
724 break;
725 }
726
727 /* Ignore reserved bits from RSCN-payload. */
728 rscn_entry = ((mb[1] & 0x3ff) << 16) | mb[2];
729 rscn_queue_index = vha->rscn_in_ptr + 1;
730 if (rscn_queue_index == MAX_RSCN_COUNT)
731 rscn_queue_index = 0;
732 if (rscn_queue_index != vha->rscn_out_ptr) {
733 vha->rscn_queue[vha->rscn_in_ptr] = rscn_entry;
734 vha->rscn_in_ptr = rscn_queue_index;
735 } else {
736 vha->flags.rscn_queue_overflow = 1;
737 }
738
739 atomic_set(&vha->loop_state, LOOP_UPDATE);
740 atomic_set(&vha->loop_down_timer, 0);
741 vha->flags.management_server_logged_in = 0;
742
743 set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
744 set_bit(RSCN_UPDATE, &vha->dpc_flags);
745 qla2x00_post_aen_work(vha, FCH_EVT_RSCN, rscn_entry);
746 break;
747
748 /* case MBA_RIO_RESPONSE: */
749 case MBA_ZIO_RESPONSE:
750 DEBUG3(printk("scsi(%ld): [R|Z]IO update completion.\n",
751 vha->host_no));
752
753 if (IS_FWI2_CAPABLE(ha))
754 qla24xx_process_response_queue(vha, rsp);
755 else
756 qla2x00_process_response_queue(rsp);
757 break;
758
759 case MBA_DISCARD_RND_FRAME:
760 DEBUG2(printk("scsi(%ld): Discard RND Frame -- %04x %04x "
761 "%04x.\n", vha->host_no, mb[1], mb[2], mb[3]));
762 break;
763
764 case MBA_TRACE_NOTIFICATION:
765 DEBUG2(printk("scsi(%ld): Trace Notification -- %04x %04x.\n",
766 vha->host_no, mb[1], mb[2]));
767 break;
768
769 case MBA_ISP84XX_ALERT:
770 DEBUG2(printk("scsi(%ld): ISP84XX Alert Notification -- "
771 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
772
773 spin_lock_irqsave(&ha->cs84xx->access_lock, flags);
774 switch (mb[1]) {
775 case A84_PANIC_RECOVERY:
776 qla_printk(KERN_INFO, ha, "Alert 84XX: panic recovery "
777 "%04x %04x\n", mb[2], mb[3]);
778 break;
779 case A84_OP_LOGIN_COMPLETE:
780 ha->cs84xx->op_fw_version = mb[3] << 16 | mb[2];
781 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
782 "firmware version %x\n", ha->cs84xx->op_fw_version));
783 break;
784 case A84_DIAG_LOGIN_COMPLETE:
785 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
786 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX:"
787 "diagnostic firmware version %x\n",
788 ha->cs84xx->diag_fw_version));
789 break;
790 case A84_GOLD_LOGIN_COMPLETE:
791 ha->cs84xx->diag_fw_version = mb[3] << 16 | mb[2];
792 ha->cs84xx->fw_update = 1;
793 DEBUG2(qla_printk(KERN_INFO, ha, "Alert 84XX: gold "
794 "firmware version %x\n",
795 ha->cs84xx->gold_fw_version));
796 break;
797 default:
798 qla_printk(KERN_ERR, ha,
799 "Alert 84xx: Invalid Alert %04x %04x %04x\n",
800 mb[1], mb[2], mb[3]);
801 }
802 spin_unlock_irqrestore(&ha->cs84xx->access_lock, flags);
803 break;
804 case MBA_DCBX_START:
805 DEBUG2(printk("scsi(%ld): DCBX Started -- %04x %04x %04x\n",
806 vha->host_no, mb[1], mb[2], mb[3]));
807 break;
808 case MBA_DCBX_PARAM_UPDATE:
809 DEBUG2(printk("scsi(%ld): DCBX Parameters Updated -- "
810 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
811 break;
812 case MBA_FCF_CONF_ERR:
813 DEBUG2(printk("scsi(%ld): FCF Configuration Error -- "
814 "%04x %04x %04x\n", vha->host_no, mb[1], mb[2], mb[3]));
815 break;
816 case MBA_IDC_COMPLETE:
817 case MBA_IDC_NOTIFY:
818 case MBA_IDC_TIME_EXT:
819 qla81xx_idc_event(vha, mb[0], mb[1]);
820 break;
821 }
822
823 if (!vha->vp_idx && ha->num_vhosts)
824 qla2x00_alert_all_vps(rsp, mb);
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 /* Save ISP completion status */
856 sp->cmd->result = DID_OK << 16;
857 qla2x00_sp_compl(ha, sp);
858 } else {
859 DEBUG2(printk("scsi(%ld) Req:%d: Invalid ISP SCSI completion"
860 " handle(0x%x)\n", vha->host_no, req->id, index));
861 qla_printk(KERN_WARNING, ha,
862 "Invalid ISP SCSI completion handle\n");
863
864 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
865 }
866 }
867
868 static srb_t *
869 qla2x00_get_sp_from_handle(scsi_qla_host_t *vha, const char *func,
870 struct req_que *req, void *iocb)
871 {
872 struct qla_hw_data *ha = vha->hw;
873 sts_entry_t *pkt = iocb;
874 srb_t *sp = NULL;
875 uint16_t index;
876
877 index = LSW(pkt->handle);
878 if (index >= MAX_OUTSTANDING_COMMANDS) {
879 qla_printk(KERN_WARNING, ha,
880 "%s: Invalid completion handle (%x).\n", func, index);
881 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
882 goto done;
883 }
884 sp = req->outstanding_cmds[index];
885 if (!sp) {
886 qla_printk(KERN_WARNING, ha,
887 "%s: Invalid completion handle (%x) -- timed-out.\n", func,
888 index);
889 return sp;
890 }
891 if (sp->handle != index) {
892 qla_printk(KERN_WARNING, ha,
893 "%s: SRB handle (%x) mismatch %x.\n", func, sp->handle,
894 index);
895 return NULL;
896 }
897
898 req->outstanding_cmds[index] = NULL;
899
900 done:
901 return sp;
902 }
903
904 static void
905 qla2x00_mbx_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
906 struct mbx_entry *mbx)
907 {
908 const char func[] = "MBX-IOCB";
909 const char *type;
910 fc_port_t *fcport;
911 srb_t *sp;
912 struct srb_iocb *lio;
913 struct srb_ctx *ctx;
914 uint16_t *data;
915 uint16_t status;
916
917 sp = qla2x00_get_sp_from_handle(vha, func, req, mbx);
918 if (!sp)
919 return;
920
921 ctx = sp->ctx;
922 lio = ctx->u.iocb_cmd;
923 type = ctx->name;
924 fcport = sp->fcport;
925 data = lio->u.logio.data;
926
927 data[0] = MBS_COMMAND_ERROR;
928 data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
929 QLA_LOGIO_LOGIN_RETRIED : 0;
930 if (mbx->entry_status) {
931 DEBUG2(printk(KERN_WARNING
932 "scsi(%ld:%x): Async-%s error entry - portid=%02x%02x%02x "
933 "entry-status=%x status=%x state-flag=%x "
934 "status-flags=%x.\n",
935 fcport->vha->host_no, sp->handle, type,
936 fcport->d_id.b.domain, fcport->d_id.b.area,
937 fcport->d_id.b.al_pa, mbx->entry_status,
938 le16_to_cpu(mbx->status), le16_to_cpu(mbx->state_flags),
939 le16_to_cpu(mbx->status_flags)));
940
941 DEBUG2(qla2x00_dump_buffer((uint8_t *)mbx, sizeof(*mbx)));
942
943 goto logio_done;
944 }
945
946 status = le16_to_cpu(mbx->status);
947 if (status == 0x30 && ctx->type == SRB_LOGIN_CMD &&
948 le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE)
949 status = 0;
950 if (!status && le16_to_cpu(mbx->mb0) == MBS_COMMAND_COMPLETE) {
951 DEBUG2(printk(KERN_DEBUG
952 "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
953 "mbx1=%x.\n",
954 fcport->vha->host_no, sp->handle, type,
955 fcport->d_id.b.domain, fcport->d_id.b.area,
956 fcport->d_id.b.al_pa, le16_to_cpu(mbx->mb1)));
957
958 data[0] = MBS_COMMAND_COMPLETE;
959 if (ctx->type == SRB_LOGIN_CMD) {
960 fcport->port_type = FCT_TARGET;
961 if (le16_to_cpu(mbx->mb1) & BIT_0)
962 fcport->port_type = FCT_INITIATOR;
963 else if (le16_to_cpu(mbx->mb1) & BIT_1)
964 fcport->flags |= FCF_FCP2_DEVICE;
965 }
966 goto logio_done;
967 }
968
969 data[0] = le16_to_cpu(mbx->mb0);
970 switch (data[0]) {
971 case MBS_PORT_ID_USED:
972 data[1] = le16_to_cpu(mbx->mb1);
973 break;
974 case MBS_LOOP_ID_USED:
975 break;
976 default:
977 data[0] = MBS_COMMAND_ERROR;
978 break;
979 }
980
981 DEBUG2(printk(KERN_WARNING
982 "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x status=%x "
983 "mb0=%x mb1=%x mb2=%x mb6=%x mb7=%x.\n",
984 fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
985 fcport->d_id.b.area, fcport->d_id.b.al_pa, status,
986 le16_to_cpu(mbx->mb0), le16_to_cpu(mbx->mb1),
987 le16_to_cpu(mbx->mb2), le16_to_cpu(mbx->mb6),
988 le16_to_cpu(mbx->mb7)));
989
990 logio_done:
991 lio->done(sp);
992 }
993
994 static void
995 qla2x00_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
996 sts_entry_t *pkt, int iocb_type)
997 {
998 const char func[] = "CT_IOCB";
999 const char *type;
1000 struct qla_hw_data *ha = vha->hw;
1001 srb_t *sp;
1002 struct srb_ctx *sp_bsg;
1003 struct fc_bsg_job *bsg_job;
1004 uint16_t comp_status;
1005
1006 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1007 if (!sp)
1008 return;
1009
1010 sp_bsg = sp->ctx;
1011 bsg_job = sp_bsg->u.bsg_job;
1012
1013 type = NULL;
1014 switch (sp_bsg->type) {
1015 case SRB_CT_CMD:
1016 type = "ct pass-through";
1017 break;
1018 default:
1019 qla_printk(KERN_WARNING, ha,
1020 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1021 sp_bsg->type);
1022 return;
1023 }
1024
1025 comp_status = le16_to_cpu(pkt->comp_status);
1026
1027 /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1028 * fc payload to the caller
1029 */
1030 bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1031 bsg_job->reply_len = sizeof(struct fc_bsg_reply);
1032
1033 if (comp_status != CS_COMPLETE) {
1034 if (comp_status == CS_DATA_UNDERRUN) {
1035 bsg_job->reply->result = DID_OK << 16;
1036 bsg_job->reply->reply_payload_rcv_len =
1037 le16_to_cpu(((sts_entry_t *)pkt)->rsp_info_len);
1038
1039 DEBUG2(qla_printk(KERN_WARNING, ha,
1040 "scsi(%ld): CT pass-through-%s error "
1041 "comp_status-status=0x%x total_byte = 0x%x.\n",
1042 vha->host_no, type, comp_status,
1043 bsg_job->reply->reply_payload_rcv_len));
1044 } else {
1045 DEBUG2(qla_printk(KERN_WARNING, ha,
1046 "scsi(%ld): CT pass-through-%s error "
1047 "comp_status-status=0x%x.\n",
1048 vha->host_no, type, comp_status));
1049 bsg_job->reply->result = DID_ERROR << 16;
1050 bsg_job->reply->reply_payload_rcv_len = 0;
1051 }
1052 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1053 } else {
1054 bsg_job->reply->result = DID_OK << 16;;
1055 bsg_job->reply->reply_payload_rcv_len =
1056 bsg_job->reply_payload.payload_len;
1057 bsg_job->reply_len = 0;
1058 }
1059
1060 dma_unmap_sg(&ha->pdev->dev, bsg_job->request_payload.sg_list,
1061 bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1062
1063 dma_unmap_sg(&ha->pdev->dev, bsg_job->reply_payload.sg_list,
1064 bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1065
1066 if (sp_bsg->type == SRB_ELS_CMD_HST || sp_bsg->type == SRB_CT_CMD)
1067 kfree(sp->fcport);
1068
1069 kfree(sp->ctx);
1070 mempool_free(sp, ha->srb_mempool);
1071 bsg_job->job_done(bsg_job);
1072 }
1073
1074 static void
1075 qla24xx_els_ct_entry(scsi_qla_host_t *vha, struct req_que *req,
1076 struct sts_entry_24xx *pkt, int iocb_type)
1077 {
1078 const char func[] = "ELS_CT_IOCB";
1079 const char *type;
1080 struct qla_hw_data *ha = vha->hw;
1081 srb_t *sp;
1082 struct srb_ctx *sp_bsg;
1083 struct fc_bsg_job *bsg_job;
1084 uint16_t comp_status;
1085 uint32_t fw_status[3];
1086 uint8_t* fw_sts_ptr;
1087
1088 sp = qla2x00_get_sp_from_handle(vha, func, req, pkt);
1089 if (!sp)
1090 return;
1091 sp_bsg = sp->ctx;
1092 bsg_job = sp_bsg->u.bsg_job;
1093
1094 type = NULL;
1095 switch (sp_bsg->type) {
1096 case SRB_ELS_CMD_RPT:
1097 case SRB_ELS_CMD_HST:
1098 type = "els";
1099 break;
1100 case SRB_CT_CMD:
1101 type = "ct pass-through";
1102 break;
1103 default:
1104 qla_printk(KERN_WARNING, ha,
1105 "%s: Unrecognized SRB: (%p) type=%d.\n", func, sp,
1106 sp_bsg->type);
1107 return;
1108 }
1109
1110 comp_status = fw_status[0] = le16_to_cpu(pkt->comp_status);
1111 fw_status[1] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1);
1112 fw_status[2] = le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2);
1113
1114 /* return FC_CTELS_STATUS_OK and leave the decoding of the ELS/CT
1115 * fc payload to the caller
1116 */
1117 bsg_job->reply->reply_data.ctels_reply.status = FC_CTELS_STATUS_OK;
1118 bsg_job->reply_len = sizeof(struct fc_bsg_reply) + sizeof(fw_status);
1119
1120 if (comp_status != CS_COMPLETE) {
1121 if (comp_status == CS_DATA_UNDERRUN) {
1122 bsg_job->reply->result = DID_OK << 16;
1123 bsg_job->reply->reply_payload_rcv_len =
1124 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count);
1125
1126 DEBUG2(qla_printk(KERN_WARNING, ha,
1127 "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1128 "error subcode 1=0x%x error subcode 2=0x%x total_byte = 0x%x.\n",
1129 vha->host_no, sp->handle, type, comp_status, fw_status[1], fw_status[2],
1130 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->total_byte_count)));
1131 fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1132 memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1133 }
1134 else {
1135 DEBUG2(qla_printk(KERN_WARNING, ha,
1136 "scsi(%ld:0x%x): ELS-CT pass-through-%s error comp_status-status=0x%x "
1137 "error subcode 1=0x%x error subcode 2=0x%x.\n",
1138 vha->host_no, sp->handle, type, comp_status,
1139 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_1),
1140 le16_to_cpu(((struct els_sts_entry_24xx*)pkt)->error_subcode_2)));
1141 bsg_job->reply->result = DID_ERROR << 16;
1142 bsg_job->reply->reply_payload_rcv_len = 0;
1143 fw_sts_ptr = ((uint8_t*)bsg_job->req->sense) + sizeof(struct fc_bsg_reply);
1144 memcpy( fw_sts_ptr, fw_status, sizeof(fw_status));
1145 }
1146 DEBUG2(qla2x00_dump_buffer((uint8_t *)pkt, sizeof(*pkt)));
1147 }
1148 else {
1149 bsg_job->reply->result = DID_OK << 16;;
1150 bsg_job->reply->reply_payload_rcv_len = bsg_job->reply_payload.payload_len;
1151 bsg_job->reply_len = 0;
1152 }
1153
1154 dma_unmap_sg(&ha->pdev->dev,
1155 bsg_job->request_payload.sg_list,
1156 bsg_job->request_payload.sg_cnt, DMA_TO_DEVICE);
1157 dma_unmap_sg(&ha->pdev->dev,
1158 bsg_job->reply_payload.sg_list,
1159 bsg_job->reply_payload.sg_cnt, DMA_FROM_DEVICE);
1160 if ((sp_bsg->type == SRB_ELS_CMD_HST) ||
1161 (sp_bsg->type == SRB_CT_CMD))
1162 kfree(sp->fcport);
1163 kfree(sp->ctx);
1164 mempool_free(sp, ha->srb_mempool);
1165 bsg_job->job_done(bsg_job);
1166 }
1167
1168 static void
1169 qla24xx_logio_entry(scsi_qla_host_t *vha, struct req_que *req,
1170 struct logio_entry_24xx *logio)
1171 {
1172 const char func[] = "LOGIO-IOCB";
1173 const char *type;
1174 fc_port_t *fcport;
1175 srb_t *sp;
1176 struct srb_iocb *lio;
1177 struct srb_ctx *ctx;
1178 uint16_t *data;
1179 uint32_t iop[2];
1180
1181 sp = qla2x00_get_sp_from_handle(vha, func, req, logio);
1182 if (!sp)
1183 return;
1184
1185 ctx = sp->ctx;
1186 lio = ctx->u.iocb_cmd;
1187 type = ctx->name;
1188 fcport = sp->fcport;
1189 data = lio->u.logio.data;
1190
1191 data[0] = MBS_COMMAND_ERROR;
1192 data[1] = lio->u.logio.flags & SRB_LOGIN_RETRIED ?
1193 QLA_LOGIO_LOGIN_RETRIED : 0;
1194 if (logio->entry_status) {
1195 DEBUG2(printk(KERN_WARNING
1196 "scsi(%ld:%x): Async-%s error entry - "
1197 "portid=%02x%02x%02x entry-status=%x.\n",
1198 fcport->vha->host_no, sp->handle, type,
1199 fcport->d_id.b.domain, fcport->d_id.b.area,
1200 fcport->d_id.b.al_pa, logio->entry_status));
1201 DEBUG2(qla2x00_dump_buffer((uint8_t *)logio, sizeof(*logio)));
1202
1203 goto logio_done;
1204 }
1205
1206 if (le16_to_cpu(logio->comp_status) == CS_COMPLETE) {
1207 DEBUG2(printk(KERN_DEBUG
1208 "scsi(%ld:%x): Async-%s complete - portid=%02x%02x%02x "
1209 "iop0=%x.\n",
1210 fcport->vha->host_no, sp->handle, type,
1211 fcport->d_id.b.domain, fcport->d_id.b.area,
1212 fcport->d_id.b.al_pa,
1213 le32_to_cpu(logio->io_parameter[0])));
1214
1215 data[0] = MBS_COMMAND_COMPLETE;
1216 if (ctx->type != SRB_LOGIN_CMD)
1217 goto logio_done;
1218
1219 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1220 if (iop[0] & BIT_4) {
1221 fcport->port_type = FCT_TARGET;
1222 if (iop[0] & BIT_8)
1223 fcport->flags |= FCF_FCP2_DEVICE;
1224 } else if (iop[0] & BIT_5)
1225 fcport->port_type = FCT_INITIATOR;
1226
1227 if (logio->io_parameter[7] || logio->io_parameter[8])
1228 fcport->supported_classes |= FC_COS_CLASS2;
1229 if (logio->io_parameter[9] || logio->io_parameter[10])
1230 fcport->supported_classes |= FC_COS_CLASS3;
1231
1232 goto logio_done;
1233 }
1234
1235 iop[0] = le32_to_cpu(logio->io_parameter[0]);
1236 iop[1] = le32_to_cpu(logio->io_parameter[1]);
1237 switch (iop[0]) {
1238 case LSC_SCODE_PORTID_USED:
1239 data[0] = MBS_PORT_ID_USED;
1240 data[1] = LSW(iop[1]);
1241 break;
1242 case LSC_SCODE_NPORT_USED:
1243 data[0] = MBS_LOOP_ID_USED;
1244 break;
1245 default:
1246 data[0] = MBS_COMMAND_ERROR;
1247 break;
1248 }
1249
1250 DEBUG2(printk(KERN_WARNING
1251 "scsi(%ld:%x): Async-%s failed - portid=%02x%02x%02x comp=%x "
1252 "iop0=%x iop1=%x.\n",
1253 fcport->vha->host_no, sp->handle, type, fcport->d_id.b.domain,
1254 fcport->d_id.b.area, fcport->d_id.b.al_pa,
1255 le16_to_cpu(logio->comp_status),
1256 le32_to_cpu(logio->io_parameter[0]),
1257 le32_to_cpu(logio->io_parameter[1])));
1258
1259 logio_done:
1260 lio->done(sp);
1261 }
1262
1263 static void
1264 qla24xx_tm_iocb_entry(scsi_qla_host_t *vha, struct req_que *req,
1265 struct tsk_mgmt_entry *tsk)
1266 {
1267 const char func[] = "TMF-IOCB";
1268 const char *type;
1269 fc_port_t *fcport;
1270 srb_t *sp;
1271 struct srb_iocb *iocb;
1272 struct srb_ctx *ctx;
1273 struct sts_entry_24xx *sts = (struct sts_entry_24xx *)tsk;
1274 int error = 1;
1275
1276 sp = qla2x00_get_sp_from_handle(vha, func, req, tsk);
1277 if (!sp)
1278 return;
1279
1280 ctx = sp->ctx;
1281 iocb = ctx->u.iocb_cmd;
1282 type = ctx->name;
1283 fcport = sp->fcport;
1284
1285 if (sts->entry_status) {
1286 DEBUG2(printk(KERN_WARNING
1287 "scsi(%ld:%x): Async-%s error - entry-status(%x).\n",
1288 fcport->vha->host_no, sp->handle, type,
1289 sts->entry_status));
1290 } else if (sts->comp_status != __constant_cpu_to_le16(CS_COMPLETE)) {
1291 DEBUG2(printk(KERN_WARNING
1292 "scsi(%ld:%x): Async-%s error - completion status(%x).\n",
1293 fcport->vha->host_no, sp->handle, type,
1294 sts->comp_status));
1295 } else if (!(le16_to_cpu(sts->scsi_status) &
1296 SS_RESPONSE_INFO_LEN_VALID)) {
1297 DEBUG2(printk(KERN_WARNING
1298 "scsi(%ld:%x): Async-%s error - no response info(%x).\n",
1299 fcport->vha->host_no, sp->handle, type,
1300 sts->scsi_status));
1301 } else if (le32_to_cpu(sts->rsp_data_len) < 4) {
1302 DEBUG2(printk(KERN_WARNING
1303 "scsi(%ld:%x): Async-%s error - not enough response(%d).\n",
1304 fcport->vha->host_no, sp->handle, type,
1305 sts->rsp_data_len));
1306 } else if (sts->data[3]) {
1307 DEBUG2(printk(KERN_WARNING
1308 "scsi(%ld:%x): Async-%s error - response(%x).\n",
1309 fcport->vha->host_no, sp->handle, type,
1310 sts->data[3]));
1311 } else {
1312 error = 0;
1313 }
1314
1315 if (error) {
1316 iocb->u.tmf.data = error;
1317 DEBUG2(qla2x00_dump_buffer((uint8_t *)sts, sizeof(*sts)));
1318 }
1319
1320 iocb->done(sp);
1321 }
1322
1323 /**
1324 * qla2x00_process_response_queue() - Process response queue entries.
1325 * @ha: SCSI driver HA context
1326 */
1327 void
1328 qla2x00_process_response_queue(struct rsp_que *rsp)
1329 {
1330 struct scsi_qla_host *vha;
1331 struct qla_hw_data *ha = rsp->hw;
1332 struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
1333 sts_entry_t *pkt;
1334 uint16_t handle_cnt;
1335 uint16_t cnt;
1336
1337 vha = pci_get_drvdata(ha->pdev);
1338
1339 if (!vha->flags.online)
1340 return;
1341
1342 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1343 pkt = (sts_entry_t *)rsp->ring_ptr;
1344
1345 rsp->ring_index++;
1346 if (rsp->ring_index == rsp->length) {
1347 rsp->ring_index = 0;
1348 rsp->ring_ptr = rsp->ring;
1349 } else {
1350 rsp->ring_ptr++;
1351 }
1352
1353 if (pkt->entry_status != 0) {
1354 DEBUG3(printk(KERN_INFO
1355 "scsi(%ld): Process error entry.\n", vha->host_no));
1356
1357 qla2x00_error_entry(vha, rsp, pkt);
1358 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1359 wmb();
1360 continue;
1361 }
1362
1363 switch (pkt->entry_type) {
1364 case STATUS_TYPE:
1365 qla2x00_status_entry(vha, rsp, pkt);
1366 break;
1367 case STATUS_TYPE_21:
1368 handle_cnt = ((sts21_entry_t *)pkt)->handle_count;
1369 for (cnt = 0; cnt < handle_cnt; cnt++) {
1370 qla2x00_process_completed_request(vha, rsp->req,
1371 ((sts21_entry_t *)pkt)->handle[cnt]);
1372 }
1373 break;
1374 case STATUS_TYPE_22:
1375 handle_cnt = ((sts22_entry_t *)pkt)->handle_count;
1376 for (cnt = 0; cnt < handle_cnt; cnt++) {
1377 qla2x00_process_completed_request(vha, rsp->req,
1378 ((sts22_entry_t *)pkt)->handle[cnt]);
1379 }
1380 break;
1381 case STATUS_CONT_TYPE:
1382 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1383 break;
1384 case MBX_IOCB_TYPE:
1385 qla2x00_mbx_iocb_entry(vha, rsp->req,
1386 (struct mbx_entry *)pkt);
1387 break;
1388 case CT_IOCB_TYPE:
1389 qla2x00_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
1390 break;
1391 default:
1392 /* Type Not Supported. */
1393 DEBUG4(printk(KERN_WARNING
1394 "scsi(%ld): Received unknown response pkt type %x "
1395 "entry status=%x.\n",
1396 vha->host_no, pkt->entry_type, pkt->entry_status));
1397 break;
1398 }
1399 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1400 wmb();
1401 }
1402
1403 /* Adjust ring index */
1404 WRT_REG_WORD(ISP_RSP_Q_OUT(ha, reg), rsp->ring_index);
1405 }
1406
1407 static inline void
1408
1409 qla2x00_handle_sense(srb_t *sp, uint8_t *sense_data, uint32_t par_sense_len,
1410 uint32_t sense_len, struct rsp_que *rsp)
1411 {
1412 struct scsi_cmnd *cp = sp->cmd;
1413
1414 if (sense_len >= SCSI_SENSE_BUFFERSIZE)
1415 sense_len = SCSI_SENSE_BUFFERSIZE;
1416
1417 sp->request_sense_length = sense_len;
1418 sp->request_sense_ptr = cp->sense_buffer;
1419 if (sp->request_sense_length > par_sense_len)
1420 sense_len = par_sense_len;
1421
1422 memcpy(cp->sense_buffer, sense_data, sense_len);
1423
1424 sp->request_sense_ptr += sense_len;
1425 sp->request_sense_length -= sense_len;
1426 if (sp->request_sense_length != 0)
1427 rsp->status_srb = sp;
1428
1429 DEBUG5(printk("%s(): Check condition Sense data, scsi(%ld:%d:%d:%d) "
1430 "cmd=%p\n", __func__, sp->fcport->vha->host_no,
1431 cp->device->channel, cp->device->id, cp->device->lun, cp));
1432 if (sense_len)
1433 DEBUG5(qla2x00_dump_buffer(cp->sense_buffer, sense_len));
1434 }
1435
1436 struct scsi_dif_tuple {
1437 __be16 guard; /* Checksum */
1438 __be16 app_tag; /* APPL identifer */
1439 __be32 ref_tag; /* Target LBA or indirect LBA */
1440 };
1441
1442 /*
1443 * Checks the guard or meta-data for the type of error
1444 * detected by the HBA. In case of errors, we set the
1445 * ASC/ASCQ fields in the sense buffer with ILLEGAL_REQUEST
1446 * to indicate to the kernel that the HBA detected error.
1447 */
1448 static inline void
1449 qla2x00_handle_dif_error(srb_t *sp, struct sts_entry_24xx *sts24)
1450 {
1451 struct scsi_cmnd *cmd = sp->cmd;
1452 struct scsi_dif_tuple *ep =
1453 (struct scsi_dif_tuple *)&sts24->data[20];
1454 struct scsi_dif_tuple *ap =
1455 (struct scsi_dif_tuple *)&sts24->data[12];
1456 uint32_t e_ref_tag, a_ref_tag;
1457 uint16_t e_app_tag, a_app_tag;
1458 uint16_t e_guard, a_guard;
1459
1460 e_ref_tag = be32_to_cpu(ep->ref_tag);
1461 a_ref_tag = be32_to_cpu(ap->ref_tag);
1462 e_app_tag = be16_to_cpu(ep->app_tag);
1463 a_app_tag = be16_to_cpu(ap->app_tag);
1464 e_guard = be16_to_cpu(ep->guard);
1465 a_guard = be16_to_cpu(ap->guard);
1466
1467 DEBUG18(printk(KERN_DEBUG
1468 "%s(): iocb(s) %p Returned STATUS\n", __func__, sts24));
1469
1470 DEBUG18(printk(KERN_ERR "DIF ERROR in cmd 0x%x lba 0x%llx act ref"
1471 " tag=0x%x, exp ref_tag=0x%x, act app tag=0x%x, exp app"
1472 " tag=0x%x, act guard=0x%x, exp guard=0x%x\n",
1473 cmd->cmnd[0], (u64)scsi_get_lba(cmd), a_ref_tag, e_ref_tag,
1474 a_app_tag, e_app_tag, a_guard, e_guard));
1475
1476
1477 /* check guard */
1478 if (e_guard != a_guard) {
1479 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1480 0x10, 0x1);
1481 set_driver_byte(cmd, DRIVER_SENSE);
1482 set_host_byte(cmd, DID_ABORT);
1483 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1484 return;
1485 }
1486
1487 /* check appl tag */
1488 if (e_app_tag != a_app_tag) {
1489 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1490 0x10, 0x2);
1491 set_driver_byte(cmd, DRIVER_SENSE);
1492 set_host_byte(cmd, DID_ABORT);
1493 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1494 return;
1495 }
1496
1497 /* check ref tag */
1498 if (e_ref_tag != a_ref_tag) {
1499 scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST,
1500 0x10, 0x3);
1501 set_driver_byte(cmd, DRIVER_SENSE);
1502 set_host_byte(cmd, DID_ABORT);
1503 cmd->result |= SAM_STAT_CHECK_CONDITION << 1;
1504 return;
1505 }
1506 }
1507
1508 /**
1509 * qla2x00_status_entry() - Process a Status IOCB entry.
1510 * @ha: SCSI driver HA context
1511 * @pkt: Entry pointer
1512 */
1513 static void
1514 qla2x00_status_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, void *pkt)
1515 {
1516 srb_t *sp;
1517 fc_port_t *fcport;
1518 struct scsi_cmnd *cp;
1519 sts_entry_t *sts;
1520 struct sts_entry_24xx *sts24;
1521 uint16_t comp_status;
1522 uint16_t scsi_status;
1523 uint16_t ox_id;
1524 uint8_t lscsi_status;
1525 int32_t resid;
1526 uint32_t sense_len, par_sense_len, rsp_info_len, resid_len,
1527 fw_resid_len;
1528 uint8_t *rsp_info, *sense_data;
1529 struct qla_hw_data *ha = vha->hw;
1530 uint32_t handle;
1531 uint16_t que;
1532 struct req_que *req;
1533 int logit = 1;
1534
1535 sts = (sts_entry_t *) pkt;
1536 sts24 = (struct sts_entry_24xx *) pkt;
1537 if (IS_FWI2_CAPABLE(ha)) {
1538 comp_status = le16_to_cpu(sts24->comp_status);
1539 scsi_status = le16_to_cpu(sts24->scsi_status) & SS_MASK;
1540 } else {
1541 comp_status = le16_to_cpu(sts->comp_status);
1542 scsi_status = le16_to_cpu(sts->scsi_status) & SS_MASK;
1543 }
1544 handle = (uint32_t) LSW(sts->handle);
1545 que = MSW(sts->handle);
1546 req = ha->req_q_map[que];
1547
1548 /* Fast path completion. */
1549 if (comp_status == CS_COMPLETE && scsi_status == 0) {
1550 qla2x00_process_completed_request(vha, req, handle);
1551
1552 return;
1553 }
1554
1555 /* Validate handle. */
1556 if (handle < MAX_OUTSTANDING_COMMANDS) {
1557 sp = req->outstanding_cmds[handle];
1558 req->outstanding_cmds[handle] = NULL;
1559 } else
1560 sp = NULL;
1561
1562 if (sp == NULL) {
1563 qla_printk(KERN_WARNING, ha,
1564 "scsi(%ld): Invalid status handle (0x%x).\n", vha->host_no,
1565 sts->handle);
1566
1567 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1568 qla2xxx_wake_dpc(vha);
1569 return;
1570 }
1571 cp = sp->cmd;
1572 if (cp == NULL) {
1573 qla_printk(KERN_WARNING, ha,
1574 "scsi(%ld): Command already returned (0x%x/%p).\n",
1575 vha->host_no, sts->handle, sp);
1576
1577 return;
1578 }
1579
1580 lscsi_status = scsi_status & STATUS_MASK;
1581
1582 fcport = sp->fcport;
1583
1584 ox_id = 0;
1585 sense_len = par_sense_len = rsp_info_len = resid_len =
1586 fw_resid_len = 0;
1587 if (IS_FWI2_CAPABLE(ha)) {
1588 if (scsi_status & SS_SENSE_LEN_VALID)
1589 sense_len = le32_to_cpu(sts24->sense_len);
1590 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1591 rsp_info_len = le32_to_cpu(sts24->rsp_data_len);
1592 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER))
1593 resid_len = le32_to_cpu(sts24->rsp_residual_count);
1594 if (comp_status == CS_DATA_UNDERRUN)
1595 fw_resid_len = le32_to_cpu(sts24->residual_len);
1596 rsp_info = sts24->data;
1597 sense_data = sts24->data;
1598 host_to_fcp_swap(sts24->data, sizeof(sts24->data));
1599 ox_id = le16_to_cpu(sts24->ox_id);
1600 par_sense_len = sizeof(sts24->data);
1601 } else {
1602 if (scsi_status & SS_SENSE_LEN_VALID)
1603 sense_len = le16_to_cpu(sts->req_sense_length);
1604 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID)
1605 rsp_info_len = le16_to_cpu(sts->rsp_info_len);
1606 resid_len = le32_to_cpu(sts->residual_length);
1607 rsp_info = sts->rsp_info;
1608 sense_data = sts->req_sense_data;
1609 par_sense_len = sizeof(sts->req_sense_data);
1610 }
1611
1612 /* Check for any FCP transport errors. */
1613 if (scsi_status & SS_RESPONSE_INFO_LEN_VALID) {
1614 /* Sense data lies beyond any FCP RESPONSE data. */
1615 if (IS_FWI2_CAPABLE(ha)) {
1616 sense_data += rsp_info_len;
1617 par_sense_len -= rsp_info_len;
1618 }
1619 if (rsp_info_len > 3 && rsp_info[3]) {
1620 DEBUG2(qla_printk(KERN_INFO, ha,
1621 "scsi(%ld:%d:%d): FCP I/O protocol failure "
1622 "(0x%x/0x%x).\n", vha->host_no, cp->device->id,
1623 cp->device->lun, rsp_info_len, rsp_info[3]));
1624
1625 cp->result = DID_BUS_BUSY << 16;
1626 goto out;
1627 }
1628 }
1629
1630 /* Check for overrun. */
1631 if (IS_FWI2_CAPABLE(ha) && comp_status == CS_COMPLETE &&
1632 scsi_status & SS_RESIDUAL_OVER)
1633 comp_status = CS_DATA_OVERRUN;
1634
1635 /*
1636 * Based on Host and scsi status generate status code for Linux
1637 */
1638 switch (comp_status) {
1639 case CS_COMPLETE:
1640 case CS_QUEUE_FULL:
1641 if (scsi_status == 0) {
1642 cp->result = DID_OK << 16;
1643 break;
1644 }
1645 if (scsi_status & (SS_RESIDUAL_UNDER | SS_RESIDUAL_OVER)) {
1646 resid = resid_len;
1647 scsi_set_resid(cp, resid);
1648
1649 if (!lscsi_status &&
1650 ((unsigned)(scsi_bufflen(cp) - resid) <
1651 cp->underflow)) {
1652 qla_printk(KERN_INFO, ha,
1653 "scsi(%ld:%d:%d): Mid-layer underflow "
1654 "detected (0x%x of 0x%x bytes).\n",
1655 vha->host_no, cp->device->id,
1656 cp->device->lun, resid, scsi_bufflen(cp));
1657
1658 cp->result = DID_ERROR << 16;
1659 break;
1660 }
1661 }
1662 cp->result = DID_OK << 16 | lscsi_status;
1663
1664 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1665 DEBUG2(qla_printk(KERN_INFO, ha,
1666 "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1667 vha->host_no, cp->device->id, cp->device->lun));
1668 break;
1669 }
1670 logit = 0;
1671 if (lscsi_status != SS_CHECK_CONDITION)
1672 break;
1673
1674 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1675 if (!(scsi_status & SS_SENSE_LEN_VALID))
1676 break;
1677
1678 qla2x00_handle_sense(sp, sense_data, par_sense_len, sense_len,
1679 rsp);
1680 break;
1681
1682 case CS_DATA_UNDERRUN:
1683 /* Use F/W calculated residual length. */
1684 resid = IS_FWI2_CAPABLE(ha) ? fw_resid_len : resid_len;
1685 scsi_set_resid(cp, resid);
1686 if (scsi_status & SS_RESIDUAL_UNDER) {
1687 if (IS_FWI2_CAPABLE(ha) && fw_resid_len != resid_len) {
1688 DEBUG2(qla_printk(KERN_INFO, ha,
1689 "scsi(%ld:%d:%d) Dropped frame(s) detected "
1690 "(0x%x of 0x%x bytes).\n", vha->host_no,
1691 cp->device->id, cp->device->lun, resid,
1692 scsi_bufflen(cp)));
1693
1694 cp->result = DID_ERROR << 16 | lscsi_status;
1695 break;
1696 }
1697
1698 if (!lscsi_status &&
1699 ((unsigned)(scsi_bufflen(cp) - resid) <
1700 cp->underflow)) {
1701 qla_printk(KERN_INFO, ha,
1702 "scsi(%ld:%d:%d): Mid-layer underflow "
1703 "detected (0x%x of 0x%x bytes).\n",
1704 vha->host_no, cp->device->id,
1705 cp->device->lun, resid, scsi_bufflen(cp));
1706
1707 cp->result = DID_ERROR << 16;
1708 break;
1709 }
1710 } else {
1711 DEBUG2(qla_printk(KERN_INFO, ha,
1712 "scsi(%ld:%d:%d) Dropped frame(s) detected (0x%x "
1713 "of 0x%x bytes).\n", vha->host_no, cp->device->id,
1714 cp->device->lun, resid, scsi_bufflen(cp)));
1715
1716 cp->result = DID_ERROR << 16 | lscsi_status;
1717 goto check_scsi_status;
1718 }
1719
1720 cp->result = DID_OK << 16 | lscsi_status;
1721 logit = 0;
1722
1723 check_scsi_status:
1724 /*
1725 * Check to see if SCSI Status is non zero. If so report SCSI
1726 * Status.
1727 */
1728 if (lscsi_status != 0) {
1729 if (lscsi_status == SAM_STAT_TASK_SET_FULL) {
1730 DEBUG2(qla_printk(KERN_INFO, ha,
1731 "scsi(%ld:%d:%d) QUEUE FULL detected.\n",
1732 vha->host_no, cp->device->id,
1733 cp->device->lun));
1734 logit = 1;
1735 break;
1736 }
1737 if (lscsi_status != SS_CHECK_CONDITION)
1738 break;
1739
1740 memset(cp->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE);
1741 if (!(scsi_status & SS_SENSE_LEN_VALID))
1742 break;
1743
1744 qla2x00_handle_sense(sp, sense_data, par_sense_len,
1745 sense_len, rsp);
1746 }
1747 break;
1748
1749 case CS_PORT_LOGGED_OUT:
1750 case CS_PORT_CONFIG_CHG:
1751 case CS_PORT_BUSY:
1752 case CS_INCOMPLETE:
1753 case CS_PORT_UNAVAILABLE:
1754 case CS_TIMEOUT:
1755 case CS_RESET:
1756
1757 /*
1758 * We are going to have the fc class block the rport
1759 * while we try to recover so instruct the mid layer
1760 * to requeue until the class decides how to handle this.
1761 */
1762 cp->result = DID_TRANSPORT_DISRUPTED << 16;
1763
1764 if (comp_status == CS_TIMEOUT) {
1765 if (IS_FWI2_CAPABLE(ha))
1766 break;
1767 else if ((le16_to_cpu(sts->status_flags) &
1768 SF_LOGOUT_SENT) == 0)
1769 break;
1770 }
1771
1772 DEBUG2(qla_printk(KERN_INFO, ha,
1773 "scsi(%ld:%d:%d) Port down status: port-state=0x%x\n",
1774 vha->host_no, cp->device->id, cp->device->lun,
1775 atomic_read(&fcport->state)));
1776
1777 if (atomic_read(&fcport->state) == FCS_ONLINE)
1778 qla2x00_mark_device_lost(fcport->vha, fcport, 1, 1);
1779 break;
1780
1781 case CS_ABORTED:
1782 cp->result = DID_RESET << 16;
1783 break;
1784
1785 case CS_DIF_ERROR:
1786 qla2x00_handle_dif_error(sp, sts24);
1787 break;
1788 default:
1789 cp->result = DID_ERROR << 16;
1790 break;
1791 }
1792
1793 out:
1794 if (logit)
1795 DEBUG2(qla_printk(KERN_INFO, ha,
1796 "scsi(%ld:%d:%d) FCP command status: 0x%x-0x%x (0x%x) "
1797 "oxid=0x%x cdb=%02x%02x%02x len=0x%x "
1798 "rsp_info=0x%x resid=0x%x fw_resid=0x%x\n", vha->host_no,
1799 cp->device->id, cp->device->lun, comp_status, scsi_status,
1800 cp->result, ox_id, cp->cmnd[0],
1801 cp->cmnd[1], cp->cmnd[2], scsi_bufflen(cp), rsp_info_len,
1802 resid_len, fw_resid_len));
1803
1804 if (rsp->status_srb == NULL)
1805 qla2x00_sp_compl(ha, sp);
1806 }
1807
1808 /**
1809 * qla2x00_status_cont_entry() - Process a Status Continuations entry.
1810 * @ha: SCSI driver HA context
1811 * @pkt: Entry pointer
1812 *
1813 * Extended sense data.
1814 */
1815 static void
1816 qla2x00_status_cont_entry(struct rsp_que *rsp, sts_cont_entry_t *pkt)
1817 {
1818 uint8_t sense_sz = 0;
1819 struct qla_hw_data *ha = rsp->hw;
1820 srb_t *sp = rsp->status_srb;
1821 struct scsi_cmnd *cp;
1822
1823 if (sp != NULL && sp->request_sense_length != 0) {
1824 cp = sp->cmd;
1825 if (cp == NULL) {
1826 DEBUG2(printk("%s(): Cmd already returned back to OS "
1827 "sp=%p.\n", __func__, sp));
1828 qla_printk(KERN_INFO, ha,
1829 "cmd is NULL: already returned to OS (sp=%p)\n",
1830 sp);
1831
1832 rsp->status_srb = NULL;
1833 return;
1834 }
1835
1836 if (sp->request_sense_length > sizeof(pkt->data)) {
1837 sense_sz = sizeof(pkt->data);
1838 } else {
1839 sense_sz = sp->request_sense_length;
1840 }
1841
1842 /* Move sense data. */
1843 if (IS_FWI2_CAPABLE(ha))
1844 host_to_fcp_swap(pkt->data, sizeof(pkt->data));
1845 memcpy(sp->request_sense_ptr, pkt->data, sense_sz);
1846 DEBUG5(qla2x00_dump_buffer(sp->request_sense_ptr, sense_sz));
1847
1848 sp->request_sense_ptr += sense_sz;
1849 sp->request_sense_length -= sense_sz;
1850
1851 /* Place command on done queue. */
1852 if (sp->request_sense_length == 0) {
1853 rsp->status_srb = NULL;
1854 qla2x00_sp_compl(ha, sp);
1855 }
1856 }
1857 }
1858
1859 /**
1860 * qla2x00_error_entry() - Process an error entry.
1861 * @ha: SCSI driver HA context
1862 * @pkt: Entry pointer
1863 */
1864 static void
1865 qla2x00_error_entry(scsi_qla_host_t *vha, struct rsp_que *rsp, sts_entry_t *pkt)
1866 {
1867 srb_t *sp;
1868 struct qla_hw_data *ha = vha->hw;
1869 uint32_t handle = LSW(pkt->handle);
1870 uint16_t que = MSW(pkt->handle);
1871 struct req_que *req = ha->req_q_map[que];
1872 #if defined(QL_DEBUG_LEVEL_2)
1873 if (pkt->entry_status & RF_INV_E_ORDER)
1874 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Order\n", __func__);
1875 else if (pkt->entry_status & RF_INV_E_COUNT)
1876 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Count\n", __func__);
1877 else if (pkt->entry_status & RF_INV_E_PARAM)
1878 qla_printk(KERN_ERR, ha,
1879 "%s: Invalid Entry Parameter\n", __func__);
1880 else if (pkt->entry_status & RF_INV_E_TYPE)
1881 qla_printk(KERN_ERR, ha, "%s: Invalid Entry Type\n", __func__);
1882 else if (pkt->entry_status & RF_BUSY)
1883 qla_printk(KERN_ERR, ha, "%s: Busy\n", __func__);
1884 else
1885 qla_printk(KERN_ERR, ha, "%s: UNKNOWN flag error\n", __func__);
1886 #endif
1887
1888 /* Validate handle. */
1889 if (handle < MAX_OUTSTANDING_COMMANDS)
1890 sp = req->outstanding_cmds[handle];
1891 else
1892 sp = NULL;
1893
1894 if (sp) {
1895 /* Free outstanding command slot. */
1896 req->outstanding_cmds[handle] = NULL;
1897
1898 /* Bad payload or header */
1899 if (pkt->entry_status &
1900 (RF_INV_E_ORDER | RF_INV_E_COUNT |
1901 RF_INV_E_PARAM | RF_INV_E_TYPE)) {
1902 sp->cmd->result = DID_ERROR << 16;
1903 } else if (pkt->entry_status & RF_BUSY) {
1904 sp->cmd->result = DID_BUS_BUSY << 16;
1905 } else {
1906 sp->cmd->result = DID_ERROR << 16;
1907 }
1908 qla2x00_sp_compl(ha, sp);
1909
1910 } else if (pkt->entry_type == COMMAND_A64_TYPE || pkt->entry_type ==
1911 COMMAND_TYPE || pkt->entry_type == COMMAND_TYPE_7) {
1912 DEBUG2(printk("scsi(%ld): Error entry - invalid handle\n",
1913 vha->host_no));
1914 qla_printk(KERN_WARNING, ha,
1915 "Error entry - invalid handle\n");
1916
1917 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
1918 qla2xxx_wake_dpc(vha);
1919 }
1920 }
1921
1922 /**
1923 * qla24xx_mbx_completion() - Process mailbox command completions.
1924 * @ha: SCSI driver HA context
1925 * @mb0: Mailbox0 register
1926 */
1927 static void
1928 qla24xx_mbx_completion(scsi_qla_host_t *vha, uint16_t mb0)
1929 {
1930 uint16_t cnt;
1931 uint16_t __iomem *wptr;
1932 struct qla_hw_data *ha = vha->hw;
1933 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
1934
1935 /* Load return mailbox registers. */
1936 ha->flags.mbox_int = 1;
1937 ha->mailbox_out[0] = mb0;
1938 wptr = (uint16_t __iomem *)&reg->mailbox1;
1939
1940 for (cnt = 1; cnt < ha->mbx_count; cnt++) {
1941 ha->mailbox_out[cnt] = RD_REG_WORD(wptr);
1942 wptr++;
1943 }
1944
1945 if (ha->mcp) {
1946 DEBUG3(printk("%s(%ld): Got mailbox completion. cmd=%x.\n",
1947 __func__, vha->host_no, ha->mcp->mb[0]));
1948 } else {
1949 DEBUG2_3(printk("%s(%ld): MBX pointer ERROR!\n",
1950 __func__, vha->host_no));
1951 }
1952 }
1953
1954 /**
1955 * qla24xx_process_response_queue() - Process response queue entries.
1956 * @ha: SCSI driver HA context
1957 */
1958 void qla24xx_process_response_queue(struct scsi_qla_host *vha,
1959 struct rsp_que *rsp)
1960 {
1961 struct sts_entry_24xx *pkt;
1962 struct qla_hw_data *ha = vha->hw;
1963
1964 if (!vha->flags.online)
1965 return;
1966
1967 while (rsp->ring_ptr->signature != RESPONSE_PROCESSED) {
1968 pkt = (struct sts_entry_24xx *)rsp->ring_ptr;
1969
1970 rsp->ring_index++;
1971 if (rsp->ring_index == rsp->length) {
1972 rsp->ring_index = 0;
1973 rsp->ring_ptr = rsp->ring;
1974 } else {
1975 rsp->ring_ptr++;
1976 }
1977
1978 if (pkt->entry_status != 0) {
1979 DEBUG3(printk(KERN_INFO
1980 "scsi(%ld): Process error entry.\n", vha->host_no));
1981
1982 qla2x00_error_entry(vha, rsp, (sts_entry_t *) pkt);
1983 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
1984 wmb();
1985 continue;
1986 }
1987
1988 switch (pkt->entry_type) {
1989 case STATUS_TYPE:
1990 qla2x00_status_entry(vha, rsp, pkt);
1991 break;
1992 case STATUS_CONT_TYPE:
1993 qla2x00_status_cont_entry(rsp, (sts_cont_entry_t *)pkt);
1994 break;
1995 case VP_RPT_ID_IOCB_TYPE:
1996 qla24xx_report_id_acquisition(vha,
1997 (struct vp_rpt_id_entry_24xx *)pkt);
1998 break;
1999 case LOGINOUT_PORT_IOCB_TYPE:
2000 qla24xx_logio_entry(vha, rsp->req,
2001 (struct logio_entry_24xx *)pkt);
2002 break;
2003 case TSK_MGMT_IOCB_TYPE:
2004 qla24xx_tm_iocb_entry(vha, rsp->req,
2005 (struct tsk_mgmt_entry *)pkt);
2006 break;
2007 case CT_IOCB_TYPE:
2008 qla24xx_els_ct_entry(vha, rsp->req, pkt, CT_IOCB_TYPE);
2009 clear_bit(MBX_INTERRUPT, &vha->hw->mbx_cmd_flags);
2010 break;
2011 case ELS_IOCB_TYPE:
2012 qla24xx_els_ct_entry(vha, rsp->req, pkt, ELS_IOCB_TYPE);
2013 break;
2014 default:
2015 /* Type Not Supported. */
2016 DEBUG4(printk(KERN_WARNING
2017 "scsi(%ld): Received unknown response pkt type %x "
2018 "entry status=%x.\n",
2019 vha->host_no, pkt->entry_type, pkt->entry_status));
2020 break;
2021 }
2022 ((response_t *)pkt)->signature = RESPONSE_PROCESSED;
2023 wmb();
2024 }
2025
2026 /* Adjust ring index */
2027 if (IS_QLA82XX(ha)) {
2028 struct device_reg_82xx __iomem *reg = &ha->iobase->isp82;
2029 WRT_REG_DWORD(&reg->rsp_q_out[0], rsp->ring_index);
2030 } else
2031 WRT_REG_DWORD(rsp->rsp_q_out, rsp->ring_index);
2032 }
2033
2034 static void
2035 qla2xxx_check_risc_status(scsi_qla_host_t *vha)
2036 {
2037 int rval;
2038 uint32_t cnt;
2039 struct qla_hw_data *ha = vha->hw;
2040 struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
2041
2042 if (!IS_QLA25XX(ha) && !IS_QLA81XX(ha))
2043 return;
2044
2045 rval = QLA_SUCCESS;
2046 WRT_REG_DWORD(&reg->iobase_addr, 0x7C00);
2047 RD_REG_DWORD(&reg->iobase_addr);
2048 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2049 for (cnt = 10000; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2050 rval == QLA_SUCCESS; cnt--) {
2051 if (cnt) {
2052 WRT_REG_DWORD(&reg->iobase_window, 0x0001);
2053 udelay(10);
2054 } else
2055 rval = QLA_FUNCTION_TIMEOUT;
2056 }
2057 if (rval == QLA_SUCCESS)
2058 goto next_test;
2059
2060 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2061 for (cnt = 100; (RD_REG_DWORD(&reg->iobase_window) & BIT_0) == 0 &&
2062 rval == QLA_SUCCESS; cnt--) {
2063 if (cnt) {
2064 WRT_REG_DWORD(&reg->iobase_window, 0x0003);
2065 udelay(10);
2066 } else
2067 rval = QLA_FUNCTION_TIMEOUT;
2068 }
2069 if (rval != QLA_SUCCESS)
2070 goto done;
2071
2072 next_test:
2073 if (RD_REG_DWORD(&reg->iobase_c8) & BIT_3)
2074 qla_printk(KERN_INFO, ha, "Additional code -- 0x55AA.\n");
2075
2076 done:
2077 WRT_REG_DWORD(&reg->iobase_window, 0x0000);
2078 RD_REG_DWORD(&reg->iobase_window);
2079 }
2080
2081 /**
2082 * qla24xx_intr_handler() - Process interrupts for the ISP23xx and ISP63xx.
2083 * @irq:
2084 * @dev_id: SCSI driver HA context
2085 *
2086 * Called by system whenever the host adapter generates an interrupt.
2087 *
2088 * Returns handled flag.
2089 */
2090 irqreturn_t
2091 qla24xx_intr_handler(int irq, void *dev_id)
2092 {
2093 scsi_qla_host_t *vha;
2094 struct qla_hw_data *ha;
2095 struct device_reg_24xx __iomem *reg;
2096 int status;
2097 unsigned long iter;
2098 uint32_t stat;
2099 uint32_t hccr;
2100 uint16_t mb[4];
2101 struct rsp_que *rsp;
2102 unsigned long flags;
2103
2104 rsp = (struct rsp_que *) dev_id;
2105 if (!rsp) {
2106 printk(KERN_INFO
2107 "%s(): NULL response queue pointer\n", __func__);
2108 return IRQ_NONE;
2109 }
2110
2111 ha = rsp->hw;
2112 reg = &ha->iobase->isp24;
2113 status = 0;
2114
2115 if (unlikely(pci_channel_offline(ha->pdev)))
2116 return IRQ_HANDLED;
2117
2118 spin_lock_irqsave(&ha->hardware_lock, flags);
2119 vha = pci_get_drvdata(ha->pdev);
2120 for (iter = 50; iter--; ) {
2121 stat = RD_REG_DWORD(&reg->host_status);
2122 if (stat & HSRX_RISC_PAUSED) {
2123 if (unlikely(pci_channel_offline(ha->pdev)))
2124 break;
2125
2126 hccr = RD_REG_DWORD(&reg->hccr);
2127
2128 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2129 "Dumping firmware!\n", hccr);
2130
2131 qla2xxx_check_risc_status(vha);
2132
2133 ha->isp_ops->fw_dump(vha, 1);
2134 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2135 break;
2136 } else if ((stat & HSRX_RISC_INT) == 0)
2137 break;
2138
2139 switch (stat & 0xff) {
2140 case 0x1:
2141 case 0x2:
2142 case 0x10:
2143 case 0x11:
2144 qla24xx_mbx_completion(vha, MSW(stat));
2145 status |= MBX_INTERRUPT;
2146
2147 break;
2148 case 0x12:
2149 mb[0] = MSW(stat);
2150 mb[1] = RD_REG_WORD(&reg->mailbox1);
2151 mb[2] = RD_REG_WORD(&reg->mailbox2);
2152 mb[3] = RD_REG_WORD(&reg->mailbox3);
2153 qla2x00_async_event(vha, rsp, mb);
2154 break;
2155 case 0x13:
2156 case 0x14:
2157 qla24xx_process_response_queue(vha, rsp);
2158 break;
2159 default:
2160 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2161 "(%d).\n",
2162 vha->host_no, stat & 0xff));
2163 break;
2164 }
2165 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2166 RD_REG_DWORD_RELAXED(&reg->hccr);
2167 }
2168 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2169
2170 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2171 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2172 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2173 complete(&ha->mbx_intr_comp);
2174 }
2175
2176 return IRQ_HANDLED;
2177 }
2178
2179 static irqreturn_t
2180 qla24xx_msix_rsp_q(int irq, void *dev_id)
2181 {
2182 struct qla_hw_data *ha;
2183 struct rsp_que *rsp;
2184 struct device_reg_24xx __iomem *reg;
2185 struct scsi_qla_host *vha;
2186 unsigned long flags;
2187
2188 rsp = (struct rsp_que *) dev_id;
2189 if (!rsp) {
2190 printk(KERN_INFO
2191 "%s(): NULL response queue pointer\n", __func__);
2192 return IRQ_NONE;
2193 }
2194 ha = rsp->hw;
2195 reg = &ha->iobase->isp24;
2196
2197 spin_lock_irqsave(&ha->hardware_lock, flags);
2198
2199 vha = pci_get_drvdata(ha->pdev);
2200 qla24xx_process_response_queue(vha, rsp);
2201 if (!ha->flags.disable_msix_handshake) {
2202 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2203 RD_REG_DWORD_RELAXED(&reg->hccr);
2204 }
2205 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2206
2207 return IRQ_HANDLED;
2208 }
2209
2210 static irqreturn_t
2211 qla25xx_msix_rsp_q(int irq, void *dev_id)
2212 {
2213 struct qla_hw_data *ha;
2214 struct rsp_que *rsp;
2215 struct device_reg_24xx __iomem *reg;
2216 unsigned long flags;
2217
2218 rsp = (struct rsp_que *) dev_id;
2219 if (!rsp) {
2220 printk(KERN_INFO
2221 "%s(): NULL response queue pointer\n", __func__);
2222 return IRQ_NONE;
2223 }
2224 ha = rsp->hw;
2225
2226 /* Clear the interrupt, if enabled, for this response queue */
2227 if (rsp->options & ~BIT_6) {
2228 reg = &ha->iobase->isp24;
2229 spin_lock_irqsave(&ha->hardware_lock, flags);
2230 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2231 RD_REG_DWORD_RELAXED(&reg->hccr);
2232 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2233 }
2234 queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
2235
2236 return IRQ_HANDLED;
2237 }
2238
2239 static irqreturn_t
2240 qla24xx_msix_default(int irq, void *dev_id)
2241 {
2242 scsi_qla_host_t *vha;
2243 struct qla_hw_data *ha;
2244 struct rsp_que *rsp;
2245 struct device_reg_24xx __iomem *reg;
2246 int status;
2247 uint32_t stat;
2248 uint32_t hccr;
2249 uint16_t mb[4];
2250 unsigned long flags;
2251
2252 rsp = (struct rsp_que *) dev_id;
2253 if (!rsp) {
2254 DEBUG(printk(
2255 "%s(): NULL response queue pointer\n", __func__));
2256 return IRQ_NONE;
2257 }
2258 ha = rsp->hw;
2259 reg = &ha->iobase->isp24;
2260 status = 0;
2261
2262 spin_lock_irqsave(&ha->hardware_lock, flags);
2263 vha = pci_get_drvdata(ha->pdev);
2264 do {
2265 stat = RD_REG_DWORD(&reg->host_status);
2266 if (stat & HSRX_RISC_PAUSED) {
2267 if (unlikely(pci_channel_offline(ha->pdev)))
2268 break;
2269
2270 hccr = RD_REG_DWORD(&reg->hccr);
2271
2272 qla_printk(KERN_INFO, ha, "RISC paused -- HCCR=%x, "
2273 "Dumping firmware!\n", hccr);
2274
2275 qla2xxx_check_risc_status(vha);
2276
2277 ha->isp_ops->fw_dump(vha, 1);
2278 set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
2279 break;
2280 } else if ((stat & HSRX_RISC_INT) == 0)
2281 break;
2282
2283 switch (stat & 0xff) {
2284 case 0x1:
2285 case 0x2:
2286 case 0x10:
2287 case 0x11:
2288 qla24xx_mbx_completion(vha, MSW(stat));
2289 status |= MBX_INTERRUPT;
2290
2291 break;
2292 case 0x12:
2293 mb[0] = MSW(stat);
2294 mb[1] = RD_REG_WORD(&reg->mailbox1);
2295 mb[2] = RD_REG_WORD(&reg->mailbox2);
2296 mb[3] = RD_REG_WORD(&reg->mailbox3);
2297 qla2x00_async_event(vha, rsp, mb);
2298 break;
2299 case 0x13:
2300 case 0x14:
2301 qla24xx_process_response_queue(vha, rsp);
2302 break;
2303 default:
2304 DEBUG2(printk("scsi(%ld): Unrecognized interrupt type "
2305 "(%d).\n",
2306 vha->host_no, stat & 0xff));
2307 break;
2308 }
2309 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
2310 } while (0);
2311 spin_unlock_irqrestore(&ha->hardware_lock, flags);
2312
2313 if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
2314 (status & MBX_INTERRUPT) && ha->flags.mbox_int) {
2315 set_bit(MBX_INTERRUPT, &ha->mbx_cmd_flags);
2316 complete(&ha->mbx_intr_comp);
2317 }
2318 return IRQ_HANDLED;
2319 }
2320
2321 /* Interrupt handling helpers. */
2322
2323 struct qla_init_msix_entry {
2324 const char *name;
2325 irq_handler_t handler;
2326 };
2327
2328 static struct qla_init_msix_entry msix_entries[3] = {
2329 { "qla2xxx (default)", qla24xx_msix_default },
2330 { "qla2xxx (rsp_q)", qla24xx_msix_rsp_q },
2331 { "qla2xxx (multiq)", qla25xx_msix_rsp_q },
2332 };
2333
2334 static struct qla_init_msix_entry qla82xx_msix_entries[2] = {
2335 { "qla2xxx (default)", qla82xx_msix_default },
2336 { "qla2xxx (rsp_q)", qla82xx_msix_rsp_q },
2337 };
2338
2339 static void
2340 qla24xx_disable_msix(struct qla_hw_data *ha)
2341 {
2342 int i;
2343 struct qla_msix_entry *qentry;
2344
2345 for (i = 0; i < ha->msix_count; i++) {
2346 qentry = &ha->msix_entries[i];
2347 if (qentry->have_irq)
2348 free_irq(qentry->vector, qentry->rsp);
2349 }
2350 pci_disable_msix(ha->pdev);
2351 kfree(ha->msix_entries);
2352 ha->msix_entries = NULL;
2353 ha->flags.msix_enabled = 0;
2354 }
2355
2356 static int
2357 qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
2358 {
2359 #define MIN_MSIX_COUNT 2
2360 int i, ret;
2361 struct msix_entry *entries;
2362 struct qla_msix_entry *qentry;
2363
2364 entries = kzalloc(sizeof(struct msix_entry) * ha->msix_count,
2365 GFP_KERNEL);
2366 if (!entries)
2367 return -ENOMEM;
2368
2369 for (i = 0; i < ha->msix_count; i++)
2370 entries[i].entry = i;
2371
2372 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2373 if (ret) {
2374 if (ret < MIN_MSIX_COUNT)
2375 goto msix_failed;
2376
2377 qla_printk(KERN_WARNING, ha,
2378 "MSI-X: Failed to enable support -- %d/%d\n"
2379 " Retry with %d vectors\n", ha->msix_count, ret, ret);
2380 ha->msix_count = ret;
2381 ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
2382 if (ret) {
2383 msix_failed:
2384 qla_printk(KERN_WARNING, ha, "MSI-X: Failed to enable"
2385 " support, giving up -- %d/%d\n",
2386 ha->msix_count, ret);
2387 goto msix_out;
2388 }
2389 ha->max_rsp_queues = ha->msix_count - 1;
2390 }
2391 ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
2392 ha->msix_count, GFP_KERNEL);
2393 if (!ha->msix_entries) {
2394 ret = -ENOMEM;
2395 goto msix_out;
2396 }
2397 ha->flags.msix_enabled = 1;
2398
2399 for (i = 0; i < ha->msix_count; i++) {
2400 qentry = &ha->msix_entries[i];
2401 qentry->vector = entries[i].vector;
2402 qentry->entry = entries[i].entry;
2403 qentry->have_irq = 0;
2404 qentry->rsp = NULL;
2405 }
2406
2407 /* Enable MSI-X vectors for the base queue */
2408 for (i = 0; i < 2; i++) {
2409 qentry = &ha->msix_entries[i];
2410 if (IS_QLA82XX(ha)) {
2411 ret = request_irq(qentry->vector,
2412 qla82xx_msix_entries[i].handler,
2413 0, qla82xx_msix_entries[i].name, rsp);
2414 } else {
2415 ret = request_irq(qentry->vector,
2416 msix_entries[i].handler,
2417 0, msix_entries[i].name, rsp);
2418 }
2419 if (ret) {
2420 qla_printk(KERN_WARNING, ha,
2421 "MSI-X: Unable to register handler -- %x/%d.\n",
2422 qentry->vector, ret);
2423 qla24xx_disable_msix(ha);
2424 ha->mqenable = 0;
2425 goto msix_out;
2426 }
2427 qentry->have_irq = 1;
2428 qentry->rsp = rsp;
2429 rsp->msix = qentry;
2430 }
2431
2432 /* Enable MSI-X vector for response queue update for queue 0 */
2433 if (ha->mqiobase && (ha->max_rsp_queues > 1 || ha->max_req_queues > 1))
2434 ha->mqenable = 1;
2435
2436 msix_out:
2437 kfree(entries);
2438 return ret;
2439 }
2440
2441 int
2442 qla2x00_request_irqs(struct qla_hw_data *ha, struct rsp_que *rsp)
2443 {
2444 int ret;
2445 device_reg_t __iomem *reg = ha->iobase;
2446
2447 /* If possible, enable MSI-X. */
2448 if (!IS_QLA2432(ha) && !IS_QLA2532(ha) &&
2449 !IS_QLA8432(ha) && !IS_QLA8XXX_TYPE(ha))
2450 goto skip_msi;
2451
2452 if (ha->pdev->subsystem_vendor == PCI_VENDOR_ID_HP &&
2453 (ha->pdev->subsystem_device == 0x7040 ||
2454 ha->pdev->subsystem_device == 0x7041 ||
2455 ha->pdev->subsystem_device == 0x1705)) {
2456 DEBUG2(qla_printk(KERN_WARNING, ha,
2457 "MSI-X: Unsupported ISP2432 SSVID/SSDID (0x%X,0x%X).\n",
2458 ha->pdev->subsystem_vendor,
2459 ha->pdev->subsystem_device));
2460 goto skip_msi;
2461 }
2462
2463 if (IS_QLA2432(ha) && (ha->pdev->revision < QLA_MSIX_CHIP_REV_24XX ||
2464 !QLA_MSIX_FW_MODE_1(ha->fw_attributes))) {
2465 DEBUG2(qla_printk(KERN_WARNING, ha,
2466 "MSI-X: Unsupported ISP2432 (0x%X, 0x%X).\n",
2467 ha->pdev->revision, ha->fw_attributes));
2468 goto skip_msix;
2469 }
2470
2471 ret = qla24xx_enable_msix(ha, rsp);
2472 if (!ret) {
2473 DEBUG2(qla_printk(KERN_INFO, ha,
2474 "MSI-X: Enabled (0x%X, 0x%X).\n", ha->chip_revision,
2475 ha->fw_attributes));
2476 goto clear_risc_ints;
2477 }
2478 qla_printk(KERN_WARNING, ha,
2479 "MSI-X: Falling back-to MSI mode -- %d.\n", ret);
2480 skip_msix:
2481
2482 if (!IS_QLA24XX(ha) && !IS_QLA2532(ha) && !IS_QLA8432(ha) &&
2483 !IS_QLA8001(ha))
2484 goto skip_msi;
2485
2486 ret = pci_enable_msi(ha->pdev);
2487 if (!ret) {
2488 DEBUG2(qla_printk(KERN_INFO, ha, "MSI: Enabled.\n"));
2489 ha->flags.msi_enabled = 1;
2490 } else
2491 qla_printk(KERN_WARNING, ha,
2492 "MSI-X: Falling back-to INTa mode -- %d.\n", ret);
2493 skip_msi:
2494
2495 ret = request_irq(ha->pdev->irq, ha->isp_ops->intr_handler,
2496 ha->flags.msi_enabled ? 0 : IRQF_SHARED,
2497 QLA2XXX_DRIVER_NAME, rsp);
2498 if (ret) {
2499 qla_printk(KERN_WARNING, ha,
2500 "Failed to reserve interrupt %d already in use.\n",
2501 ha->pdev->irq);
2502 goto fail;
2503 }
2504
2505 clear_risc_ints:
2506
2507 /*
2508 * FIXME: Noted that 8014s were being dropped during NK testing.
2509 * Timing deltas during MSI-X/INTa transitions?
2510 */
2511 if (IS_QLA81XX(ha) || IS_QLA82XX(ha))
2512 goto fail;
2513 spin_lock_irq(&ha->hardware_lock);
2514 if (IS_FWI2_CAPABLE(ha)) {
2515 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_HOST_INT);
2516 WRT_REG_DWORD(&reg->isp24.hccr, HCCRX_CLR_RISC_INT);
2517 } else {
2518 WRT_REG_WORD(&reg->isp.semaphore, 0);
2519 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_RISC_INT);
2520 WRT_REG_WORD(&reg->isp.hccr, HCCR_CLR_HOST_INT);
2521 }
2522 spin_unlock_irq(&ha->hardware_lock);
2523
2524 fail:
2525 return ret;
2526 }
2527
2528 void
2529 qla2x00_free_irqs(scsi_qla_host_t *vha)
2530 {
2531 struct qla_hw_data *ha = vha->hw;
2532 struct rsp_que *rsp = ha->rsp_q_map[0];
2533
2534 if (ha->flags.msix_enabled)
2535 qla24xx_disable_msix(ha);
2536 else if (ha->flags.msi_enabled) {
2537 free_irq(ha->pdev->irq, rsp);
2538 pci_disable_msi(ha->pdev);
2539 } else
2540 free_irq(ha->pdev->irq, rsp);
2541 }
2542
2543
2544 int qla25xx_request_irq(struct rsp_que *rsp)
2545 {
2546 struct qla_hw_data *ha = rsp->hw;
2547 struct qla_init_msix_entry *intr = &msix_entries[2];
2548 struct qla_msix_entry *msix = rsp->msix;
2549 int ret;
2550
2551 ret = request_irq(msix->vector, intr->handler, 0, intr->name, rsp);
2552 if (ret) {
2553 qla_printk(KERN_WARNING, ha,
2554 "MSI-X: Unable to register handler -- %x/%d.\n",
2555 msix->vector, ret);
2556 return ret;
2557 }
2558 msix->have_irq = 1;
2559 msix->rsp = rsp;
2560 return ret;
2561 }