summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/qla4xxx/ql4_mbx.c
blob: ef82399c0858aa24cfca09b5b6f5c10aeddb674f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
/*
 * QLogic iSCSI HBA Driver
 * Copyright (c)  2003-2006 QLogic Corporation
 *
 * See LICENSE.qla4xxx for copyright and licensing details.
 */

#include "ql4_def.h"


/**
 * qla4xxx_mailbox_command - issues mailbox commands
 * @ha: Pointer to host adapter structure.
 * @inCount: number of mailbox registers to load.
 * @outCount: number of mailbox registers to return.
 * @mbx_cmd: data pointer for mailbox in registers.
 * @mbx_sts: data pointer for mailbox out registers.
 *
 * This routine sssue mailbox commands and waits for completion.
 * If outCount is 0, this routine completes successfully WITHOUT waiting
 * for the mailbox command to complete.
 **/
int qla4xxx_mailbox_command(struct scsi_qla_host *ha, uint8_t inCount,
			    uint8_t outCount, uint32_t *mbx_cmd,
			    uint32_t *mbx_sts)
{
	int status = QLA_ERROR;
	uint8_t i;
	u_long wait_count;
	uint32_t intr_status;
	unsigned long flags = 0;
	DECLARE_WAITQUEUE(wait, current);

	mutex_lock(&ha->mbox_sem);

	/* Mailbox code active */
	set_bit(AF_MBOX_COMMAND, &ha->flags);

	/* Make sure that pointers are valid */
	if (!mbx_cmd || !mbx_sts) {
		DEBUG2(printk("scsi%ld: %s: Invalid mbx_cmd or mbx_sts "
			      "pointer\n", ha->host_no, __func__));
		goto mbox_exit;
	}

	/* To prevent overwriting mailbox registers for a command that has
	 * not yet been serviced, check to see if a previously issued
	 * mailbox command is interrupting.
	 * -----------------------------------------------------------------
	 */
	spin_lock_irqsave(&ha->hardware_lock, flags);
	intr_status = readl(&ha->reg->ctrl_status);
	if (intr_status & CSR_SCSI_PROCESSOR_INTR) {
		/* Service existing interrupt */
		qla4xxx_interrupt_service_routine(ha, intr_status);
		clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
	}

	/* Send the mailbox command to the firmware */
	ha->mbox_status_count = outCount;
	for (i = 0; i < outCount; i++)
		ha->mbox_status[i] = 0;

	/* Load all mailbox registers, except mailbox 0. */
	for (i = 1; i < inCount; i++)
		writel(mbx_cmd[i], &ha->reg->mailbox[i]);

	/* Wakeup firmware  */
	writel(mbx_cmd[0], &ha->reg->mailbox[0]);
	readl(&ha->reg->mailbox[0]);
	writel(set_rmask(CSR_INTR_RISC), &ha->reg->ctrl_status);
	readl(&ha->reg->ctrl_status);
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

	/* Wait for completion */
	set_current_state(TASK_UNINTERRUPTIBLE);
	add_wait_queue(&ha->mailbox_wait_queue, &wait);

	/*
	 * If we don't want status, don't wait for the mailbox command to
	 * complete.  For example, MBOX_CMD_RESET_FW doesn't return status,
	 * you must poll the inbound Interrupt Mask for completion.
	 */
	if (outCount == 0) {
		status = QLA_SUCCESS;
		set_current_state(TASK_RUNNING);
		remove_wait_queue(&ha->mailbox_wait_queue, &wait);
		goto mbox_exit;
	}
	/* Wait for command to complete */
	wait_count = jiffies + MBOX_TOV * HZ;
	while (test_bit(AF_MBOX_COMMAND_DONE, &ha->flags) == 0) {
		if (time_after_eq(jiffies, wait_count))
			break;

		spin_lock_irqsave(&ha->hardware_lock, flags);
		intr_status = readl(&ha->reg->ctrl_status);
		if (intr_status & INTR_PENDING) {
			/*
			 * Service the interrupt.
			 * The ISR will save the mailbox status registers
			 * to a temporary storage location in the adapter
			 * structure.
			 */
			ha->mbox_status_count = outCount;
			qla4xxx_interrupt_service_routine(ha, intr_status);
		}
		spin_unlock_irqrestore(&ha->hardware_lock, flags);
		msleep(10);
	}
	set_current_state(TASK_RUNNING);
	remove_wait_queue(&ha->mailbox_wait_queue, &wait);

	/* Check for mailbox timeout. */
	if (!test_bit(AF_MBOX_COMMAND_DONE, &ha->flags)) {
		DEBUG2(printk("scsi%ld: Mailbox Cmd 0x%08X timed out ...,"
			      " Scheduling Adapter Reset\n", ha->host_no,
			      mbx_cmd[0]));
		ha->mailbox_timeout_count++;
		mbx_sts[0] = (-1);
		set_bit(DPC_RESET_HA, &ha->dpc_flags);
		goto mbox_exit;
	}

	/*
	 * Copy the mailbox out registers to the caller's mailbox in/out
	 * structure.
	 */
	spin_lock_irqsave(&ha->hardware_lock, flags);
	for (i = 0; i < outCount; i++)
		mbx_sts[i] = ha->mbox_status[i];

	/* Set return status and error flags (if applicable). */
	switch (ha->mbox_status[0]) {
	case MBOX_STS_COMMAND_COMPLETE:
		status = QLA_SUCCESS;
		break;

	case MBOX_STS_INTERMEDIATE_COMPLETION:
		status = QLA_SUCCESS;
		break;

	case MBOX_STS_BUSY:
		DEBUG2( printk("scsi%ld: %s: Cmd = %08X, ISP BUSY\n",
			       ha->host_no, __func__, mbx_cmd[0]));
		ha->mailbox_timeout_count++;
		break;

	default:
		DEBUG2(printk("scsi%ld: %s: **** FAILED, cmd = %08X, "
			      "sts = %08X ****\n", ha->host_no, __func__,
			      mbx_cmd[0], mbx_sts[0]));
		break;
	}
	spin_unlock_irqrestore(&ha->hardware_lock, flags);

mbox_exit:
	clear_bit(AF_MBOX_COMMAND, &ha->flags);
	clear_bit(AF_MBOX_COMMAND_DONE, &ha->flags);
	mutex_unlock(&ha->mbox_sem);

	return status;
}


/**
 * qla4xxx_issue_iocb - issue mailbox iocb command
 * @ha: adapter state pointer.
 * @buffer: buffer pointer.
 * @phys_addr: physical address of buffer.
 * @size: size of buffer.
 *
 * Issues iocbs via mailbox commands.
 * TARGET_QUEUE_LOCK must be released.
 * ADAPTER_STATE_LOCK must be released.
 **/
int
qla4xxx_issue_iocb(struct scsi_qla_host * ha, void *buffer,
		   dma_addr_t phys_addr, size_t size)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	int status;

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_EXECUTE_IOCB_A64;
	mbox_cmd[1] = 0;
	mbox_cmd[2] = LSDW(phys_addr);
	mbox_cmd[3] = MSDW(phys_addr);
	status = qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
	return status;
}

int qla4xxx_conn_close_sess_logout(struct scsi_qla_host * ha,
				   uint16_t fw_ddb_index,
				   uint16_t connection_id,
				   uint16_t option)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_CONN_CLOSE_SESS_LOGOUT;
	mbox_cmd[1] = fw_ddb_index;
	mbox_cmd[2] = connection_id;
	mbox_cmd[3] = LOGOUT_OPTION_RELOGIN;
	if (qla4xxx_mailbox_command(ha, 4, 2, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_CONN_CLOSE_SESS_LOGOUT "
			      "option %04x failed sts %04X %04X",
			      ha->host_no, __func__,
			      option, mbox_sts[0], mbox_sts[1]));
		if (mbox_sts[0] == 0x4005)
			DEBUG2(printk("%s reason %04X\n", __func__,
				      mbox_sts[1]));
	}
	return QLA_SUCCESS;
}

int qla4xxx_clear_database_entry(struct scsi_qla_host * ha,
				 uint16_t fw_ddb_index)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_CLEAR_DATABASE_ENTRY;
	mbox_cmd[1] = fw_ddb_index;
	if (qla4xxx_mailbox_command(ha, 2, 5, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS)
		return QLA_ERROR;

	return QLA_SUCCESS;
}

/**
 * qla4xxx_initialize_fw_cb - initializes firmware control block.
 * @ha: Pointer to host adapter structure.
 **/
int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
{
	struct init_fw_ctrl_blk *init_fw_cb;
	dma_addr_t init_fw_cb_dma;
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	int status = QLA_ERROR;

	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
					sizeof(struct init_fw_ctrl_blk),
					&init_fw_cb_dma, GFP_KERNEL);
	if (init_fw_cb == NULL) {
		DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
			      ha->host_no, __func__));
		return 10;
	}
	memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));

	/* Get Initialize Firmware Control Block. */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
	mbox_cmd[2] = LSDW(init_fw_cb_dma);
	mbox_cmd[3] = MSDW(init_fw_cb_dma);
	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		dma_free_coherent(&ha->pdev->dev,
				  sizeof(struct init_fw_ctrl_blk),
				  init_fw_cb, init_fw_cb_dma);
		return status;
	}

	/* Initialize request and response queues. */
	qla4xxx_init_rings(ha);

	/* Fill in the request and response queue information. */
	init_fw_cb->ReqQConsumerIndex = cpu_to_le16(ha->request_out);
	init_fw_cb->ComplQProducerIndex = cpu_to_le16(ha->response_in);
	init_fw_cb->ReqQLen = __constant_cpu_to_le16(REQUEST_QUEUE_DEPTH);
	init_fw_cb->ComplQLen = __constant_cpu_to_le16(RESPONSE_QUEUE_DEPTH);
	init_fw_cb->ReqQAddrLo = cpu_to_le32(LSDW(ha->request_dma));
	init_fw_cb->ReqQAddrHi = cpu_to_le32(MSDW(ha->request_dma));
	init_fw_cb->ComplQAddrLo = cpu_to_le32(LSDW(ha->response_dma));
	init_fw_cb->ComplQAddrHi = cpu_to_le32(MSDW(ha->response_dma));
	init_fw_cb->ShadowRegBufAddrLo =
		cpu_to_le32(LSDW(ha->shadow_regs_dma));
	init_fw_cb->ShadowRegBufAddrHi =
		cpu_to_le32(MSDW(ha->shadow_regs_dma));

	/* Set up required options. */
	init_fw_cb->FwOptions |=
		__constant_cpu_to_le16(FWOPT_SESSION_MODE |
				       FWOPT_INITIATOR_MODE);
	init_fw_cb->FwOptions &= __constant_cpu_to_le16(~FWOPT_TARGET_MODE);

	/* Save some info in adapter structure. */
	ha->firmware_options = le16_to_cpu(init_fw_cb->FwOptions);
	ha->tcp_options = le16_to_cpu(init_fw_cb->TCPOptions);
	ha->heartbeat_interval = init_fw_cb->HeartbeatInterval;
	memcpy(ha->ip_address, init_fw_cb->IPAddr,
	       min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
	memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
	       min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
	memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
	       min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));
	memcpy(ha->name_string, init_fw_cb->iSCSINameString,
	       min(sizeof(ha->name_string),
		   sizeof(init_fw_cb->iSCSINameString)));
	memcpy(ha->alias, init_fw_cb->Alias,
	       min(sizeof(ha->alias), sizeof(init_fw_cb->Alias)));

	/* Save Command Line Paramater info */
	ha->port_down_retry_count = le16_to_cpu(init_fw_cb->KeepAliveTimeout);
	ha->discovery_wait = ql4xdiscoverywait;

	/* Send Initialize Firmware Control Block. */
	mbox_cmd[0] = MBOX_CMD_INITIALIZE_FIRMWARE;
	mbox_cmd[1] = 0;
	mbox_cmd[2] = LSDW(init_fw_cb_dma);
	mbox_cmd[3] = MSDW(init_fw_cb_dma);
	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) ==
	    QLA_SUCCESS)
		status = QLA_SUCCESS;
	 else {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_INITIALIZE_FIRMWARE "
			      "failed w/ status %04X\n", ha->host_no, __func__,
			      mbox_sts[0]));
	}
	dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
			  init_fw_cb, init_fw_cb_dma);

	return status;
}

/**
 * qla4xxx_get_dhcp_ip_address - gets HBA ip address via DHCP
 * @ha: Pointer to host adapter structure.
 **/
int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
{
	struct init_fw_ctrl_blk *init_fw_cb;
	dma_addr_t init_fw_cb_dma;
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
					sizeof(struct init_fw_ctrl_blk),
					&init_fw_cb_dma, GFP_KERNEL);
	if (init_fw_cb == NULL) {
		printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
		       __func__);
		return 10;
	}

	/* Get Initialize Firmware Control Block. */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	memset(init_fw_cb, 0, sizeof(struct init_fw_ctrl_blk));
	mbox_cmd[0] = MBOX_CMD_GET_INIT_FW_CTRL_BLOCK;
	mbox_cmd[2] = LSDW(init_fw_cb_dma);
	mbox_cmd[3] = MSDW(init_fw_cb_dma);

	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: Failed to get init_fw_ctrl_blk\n",
			      ha->host_no, __func__));
		dma_free_coherent(&ha->pdev->dev,
				  sizeof(struct init_fw_ctrl_blk),
				  init_fw_cb, init_fw_cb_dma);
		return QLA_ERROR;
	}

	/* Save IP Address. */
	memcpy(ha->ip_address, init_fw_cb->IPAddr,
	       min(sizeof(ha->ip_address), sizeof(init_fw_cb->IPAddr)));
	memcpy(ha->subnet_mask, init_fw_cb->SubnetMask,
	       min(sizeof(ha->subnet_mask), sizeof(init_fw_cb->SubnetMask)));
	memcpy(ha->gateway, init_fw_cb->GatewayIPAddr,
	       min(sizeof(ha->gateway), sizeof(init_fw_cb->GatewayIPAddr)));

	dma_free_coherent(&ha->pdev->dev, sizeof(struct init_fw_ctrl_blk),
			  init_fw_cb, init_fw_cb_dma);

	return QLA_SUCCESS;
}

/**
 * qla4xxx_get_firmware_state - gets firmware state of HBA
 * @ha: Pointer to host adapter structure.
 **/
int qla4xxx_get_firmware_state(struct scsi_qla_host * ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	/* Get firmware version */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_GET_FW_STATE;
	if (qla4xxx_mailbox_command(ha, 1, 4, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATE failed w/ "
			      "status %04X\n", ha->host_no, __func__,
			      mbox_sts[0]));
		return QLA_ERROR;
	}
	ha->firmware_state = mbox_sts[1];
	ha->board_id = mbox_sts[2];
	ha->addl_fw_state = mbox_sts[3];
	DEBUG2(printk("scsi%ld: %s firmware_state=0x%x\n",
		      ha->host_no, __func__, ha->firmware_state);)

		return QLA_SUCCESS;
}

/**
 * qla4xxx_get_firmware_status - retrieves firmware status
 * @ha: Pointer to host adapter structure.
 **/
int qla4xxx_get_firmware_status(struct scsi_qla_host * ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	/* Get firmware version */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_GET_FW_STATUS;
	if (qla4xxx_mailbox_command(ha, 1, 3, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_FW_STATUS failed w/ "
			      "status %04X\n", ha->host_no, __func__,
			      mbox_sts[0]));
		return QLA_ERROR;
	}

	/* High-water mark of IOCBs */
	ha->iocb_hiwat = mbox_sts[2];
	if (ha->iocb_hiwat > IOCB_HIWAT_CUSHION)
		ha->iocb_hiwat -= IOCB_HIWAT_CUSHION;
	else
		dev_info(&ha->pdev->dev, "WARNING!!!  You have less than %d "
			   "firmare IOCBs available (%d).\n",
			   IOCB_HIWAT_CUSHION, ha->iocb_hiwat);

	return QLA_SUCCESS;
}

/**
 * qla4xxx_get_fwddb_entry - retrieves firmware ddb entry
 * @ha: Pointer to host adapter structure.
 * @fw_ddb_index: Firmware's device database index
 * @fw_ddb_entry: Pointer to firmware's device database entry structure
 * @num_valid_ddb_entries: Pointer to number of valid ddb entries
 * @next_ddb_index: Pointer to next valid device database index
 * @fw_ddb_device_state: Pointer to device state
 **/
int qla4xxx_get_fwddb_entry(struct scsi_qla_host *ha,
			    uint16_t fw_ddb_index,
			    struct dev_db_entry *fw_ddb_entry,
			    dma_addr_t fw_ddb_entry_dma,
			    uint32_t *num_valid_ddb_entries,
			    uint32_t *next_ddb_index,
			    uint32_t *fw_ddb_device_state,
			    uint32_t *conn_err_detail,
			    uint16_t *tcp_source_port_num,
			    uint16_t *connection_id)
{
	int status = QLA_ERROR;
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	/* Make sure the device index is valid */
	if (fw_ddb_index >= MAX_DDB_ENTRIES) {
		DEBUG2(printk("scsi%ld: %s: index [%d] out of range.\n",
			      ha->host_no, __func__, fw_ddb_index));
		goto exit_get_fwddb;
	}
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY;
	mbox_cmd[1] = (uint32_t) fw_ddb_index;
	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
	if (qla4xxx_mailbox_command(ha, 4, 7, &mbox_cmd[0], &mbox_sts[0]) ==
	    QLA_ERROR) {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_GET_DATABASE_ENTRY failed"
			      " with status 0x%04X\n", ha->host_no, __func__,
			      mbox_sts[0]));
		goto exit_get_fwddb;
	}
	if (fw_ddb_index != mbox_sts[1]) {
		DEBUG2(printk("scsi%ld: %s: index mismatch [%d] != [%d].\n",
			      ha->host_no, __func__, fw_ddb_index,
			      mbox_sts[1]));
		goto exit_get_fwddb;
	}
	if (fw_ddb_entry) {
		dev_info(&ha->pdev->dev, "DDB[%d] MB0 %04x Tot %d Next %d "
			   "State %04x ConnErr %08x %d.%d.%d.%d:%04d \"%s\"\n",
			   fw_ddb_index, mbox_sts[0], mbox_sts[2], mbox_sts[3],
			   mbox_sts[4], mbox_sts[5], fw_ddb_entry->ipAddr[0],
			   fw_ddb_entry->ipAddr[1], fw_ddb_entry->ipAddr[2],
			   fw_ddb_entry->ipAddr[3],
			   le16_to_cpu(fw_ddb_entry->portNumber),
			   fw_ddb_entry->iscsiName);
	}
	if (num_valid_ddb_entries)
		*num_valid_ddb_entries = mbox_sts[2];
	if (next_ddb_index)
		*next_ddb_index = mbox_sts[3];
	if (fw_ddb_device_state)
		*fw_ddb_device_state = mbox_sts[4];

	/*
	 * RA: This mailbox has been changed to pass connection error and
	 * details.  Its true for ISP4010 as per Version E - Not sure when it
	 * was changed.	 Get the time2wait from the fw_dd_entry field :
	 * default_time2wait which we call it as minTime2Wait DEV_DB_ENTRY
	 * struct.
	 */
	if (conn_err_detail)
		*conn_err_detail = mbox_sts[5];
	if (tcp_source_port_num)
		*tcp_source_port_num = (uint16_t) mbox_sts[6] >> 16;
	if (connection_id)
		*connection_id = (uint16_t) mbox_sts[6] & 0x00FF;
	status = QLA_SUCCESS;

exit_get_fwddb:
	return status;
}

/**
 * qla4xxx_set_fwddb_entry - sets a ddb entry.
 * @ha: Pointer to host adapter structure.
 * @fw_ddb_index: Firmware's device database index
 * @fw_ddb_entry: Pointer to firmware's ddb entry structure, or NULL.
 *
 * This routine initializes or updates the adapter's device database
 * entry for the specified device. It also triggers a login for the
 * specified device. Therefore, it may also be used as a secondary
 * login routine when a NULL pointer is specified for the fw_ddb_entry.
 **/
int qla4xxx_set_ddb_entry(struct scsi_qla_host * ha, uint16_t fw_ddb_index,
			  dma_addr_t fw_ddb_entry_dma)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	/* Do not wait for completion. The firmware will send us an
	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
	 */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));

	mbox_cmd[0] = MBOX_CMD_SET_DATABASE_ENTRY;
	mbox_cmd[1] = (uint32_t) fw_ddb_index;
	mbox_cmd[2] = LSDW(fw_ddb_entry_dma);
	mbox_cmd[3] = MSDW(fw_ddb_entry_dma);
	return qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]);
}

int qla4xxx_conn_open_session_login(struct scsi_qla_host * ha,
				    uint16_t fw_ddb_index)
{
	int status = QLA_ERROR;
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	/* Do not wait for completion. The firmware will send us an
	 * ASTS_DATABASE_CHANGED (0x8014) to notify us of the login status.
	 */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_CONN_OPEN_SESS_LOGIN;
	mbox_cmd[1] = (uint32_t) fw_ddb_index;
	mbox_cmd[2] = 0;
	mbox_cmd[3] = 0;
	mbox_cmd[4] = 0;
	status = qla4xxx_mailbox_command(ha, 4, 0, &mbox_cmd[0], &mbox_sts[0]);
	DEBUG2(printk("%s fw_ddb_index=%d status=%d mbx0_1=0x%x :0x%x\n",
		      __func__, fw_ddb_index, status, mbox_sts[0],
		      mbox_sts[1]);)

		return status;
}

/**
 * qla4xxx_get_crash_record - retrieves crash record.
 * @ha: Pointer to host adapter structure.
 *
 * This routine retrieves a crash record from the QLA4010 after an 8002h aen.
 **/
void qla4xxx_get_crash_record(struct scsi_qla_host * ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	struct crash_record *crash_record = NULL;
	dma_addr_t crash_record_dma = 0;
	uint32_t crash_record_size = 0;
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_cmd));

	/* Get size of crash record. */
	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
	if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve size!\n",
			      ha->host_no, __func__));
		goto exit_get_crash_record;
	}
	crash_record_size = mbox_sts[4];
	if (crash_record_size == 0) {
		DEBUG2(printk("scsi%ld: %s: ERROR: Crash record size is 0!\n",
			      ha->host_no, __func__));
		goto exit_get_crash_record;
	}

	/* Alloc Memory for Crash Record. */
	crash_record = dma_alloc_coherent(&ha->pdev->dev, crash_record_size,
					  &crash_record_dma, GFP_KERNEL);
	if (crash_record == NULL)
		goto exit_get_crash_record;

	/* Get Crash Record. */
	mbox_cmd[0] = MBOX_CMD_GET_CRASH_RECORD;
	mbox_cmd[2] = LSDW(crash_record_dma);
	mbox_cmd[3] = MSDW(crash_record_dma);
	mbox_cmd[4] = crash_record_size;
	if (qla4xxx_mailbox_command(ha, 5, 5, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS)
		goto exit_get_crash_record;

	/* Dump Crash Record. */

exit_get_crash_record:
	if (crash_record)
		dma_free_coherent(&ha->pdev->dev, crash_record_size,
				  crash_record, crash_record_dma);
}

/**
 * qla4xxx_get_conn_event_log - retrieves connection event log
 * @ha: Pointer to host adapter structure.
 **/
void qla4xxx_get_conn_event_log(struct scsi_qla_host * ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	struct conn_event_log_entry *event_log = NULL;
	dma_addr_t event_log_dma = 0;
	uint32_t event_log_size = 0;
	uint32_t num_valid_entries;
	uint32_t      oldest_entry = 0;
	uint32_t	max_event_log_entries;
	uint8_t		i;


	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_cmd));

	/* Get size of crash record. */
	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
	if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS)
		goto exit_get_event_log;

	event_log_size = mbox_sts[4];
	if (event_log_size == 0)
		goto exit_get_event_log;

	/* Alloc Memory for Crash Record. */
	event_log = dma_alloc_coherent(&ha->pdev->dev, event_log_size,
				       &event_log_dma, GFP_KERNEL);
	if (event_log == NULL)
		goto exit_get_event_log;

	/* Get Crash Record. */
	mbox_cmd[0] = MBOX_CMD_GET_CONN_EVENT_LOG;
	mbox_cmd[2] = LSDW(event_log_dma);
	mbox_cmd[3] = MSDW(event_log_dma);
	if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: ERROR: Unable to retrieve event "
			      "log!\n", ha->host_no, __func__));
		goto exit_get_event_log;
	}

	/* Dump Event Log. */
	num_valid_entries = mbox_sts[1];

	max_event_log_entries = event_log_size /
		sizeof(struct conn_event_log_entry);

	if (num_valid_entries > max_event_log_entries)
		oldest_entry = num_valid_entries % max_event_log_entries;

	DEBUG3(printk("scsi%ld: Connection Event Log Dump (%d entries):\n",
		      ha->host_no, num_valid_entries));

	if (qla4_extended_error_logging == 3) {
		if (oldest_entry == 0) {
			/* Circular Buffer has not wrapped around */
			for (i=0; i < num_valid_entries; i++) {
				qla4xxx_dump_buffer((uint8_t *)event_log+
						    (i*sizeof(*event_log)),
						    sizeof(*event_log));
			}
		}
		else {
			/* Circular Buffer has wrapped around -
			 * display accordingly*/
			for (i=oldest_entry; i < max_event_log_entries; i++) {
				qla4xxx_dump_buffer((uint8_t *)event_log+
						    (i*sizeof(*event_log)),
						    sizeof(*event_log));
			}
			for (i=0; i < oldest_entry; i++) {
				qla4xxx_dump_buffer((uint8_t *)event_log+
						    (i*sizeof(*event_log)),
						    sizeof(*event_log));
			}
		}
	}

exit_get_event_log:
	if (event_log)
		dma_free_coherent(&ha->pdev->dev, event_log_size, event_log,
				  event_log_dma);
}

/**
 * qla4xxx_reset_lun - issues LUN Reset
 * @ha: Pointer to host adapter structure.
 * @db_entry: Pointer to device database entry
 * @un_entry: Pointer to lun entry structure
 *
 * This routine performs a LUN RESET on the specified target/lun.
 * The caller must ensure that the ddb_entry and lun_entry pointers
 * are valid before calling this routine.
 **/
int qla4xxx_reset_lun(struct scsi_qla_host * ha, struct ddb_entry * ddb_entry,
		      int lun)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];
	int status = QLA_SUCCESS;

	DEBUG2(printk("scsi%ld:%d:%d: lun reset issued\n", ha->host_no,
		      ddb_entry->os_target_id, lun));

	/*
	 * Send lun reset command to ISP, so that the ISP will return all
	 * outstanding requests with RESET status
	 */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_LUN_RESET;
	mbox_cmd[1] = ddb_entry->fw_ddb_index;
	mbox_cmd[2] = lun << 8;
	mbox_cmd[5] = 0x01;	/* Immediate Command Enable */
	qla4xxx_mailbox_command(ha, 6, 1, &mbox_cmd[0], &mbox_sts[0]);
	if (mbox_sts[0] != MBOX_STS_COMMAND_COMPLETE &&
	    mbox_sts[0] != MBOX_STS_COMMAND_ERROR)
		status = QLA_ERROR;

	return status;
}


int qla4xxx_get_flash(struct scsi_qla_host * ha, dma_addr_t dma_addr,
		      uint32_t offset, uint32_t len)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_READ_FLASH;
	mbox_cmd[1] = LSDW(dma_addr);
	mbox_cmd[2] = MSDW(dma_addr);
	mbox_cmd[3] = offset;
	mbox_cmd[4] = len;
	if (qla4xxx_mailbox_command(ha, 5, 2, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_READ_FLASH, failed w/ "
		    "status %04X %04X, offset %08x, len %08x\n", ha->host_no,
		    __func__, mbox_sts[0], mbox_sts[1], offset, len));
		return QLA_ERROR;
	}
	return QLA_SUCCESS;
}

/**
 * qla4xxx_get_fw_version - gets firmware version
 * @ha: Pointer to host adapter structure.
 *
 * Retrieves the firmware version on HBA. In QLA4010, mailboxes 2 & 3 may
 * hold an address for data.  Make sure that we write 0 to those mailboxes,
 * if unused.
 **/
int qla4xxx_get_fw_version(struct scsi_qla_host * ha)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	/* Get firmware version. */
	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));
	mbox_cmd[0] = MBOX_CMD_ABOUT_FW;
	if (qla4xxx_mailbox_command(ha, 4, 5, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: MBOX_CMD_ABOUT_FW failed w/ "
		    "status %04X\n", ha->host_no, __func__, mbox_sts[0]));
		return QLA_ERROR;
	}

	/* Save firmware version information. */
	ha->firmware_version[0] = mbox_sts[1];
	ha->firmware_version[1] = mbox_sts[2];
	ha->patch_number = mbox_sts[3];
	ha->build_number = mbox_sts[4];

	return QLA_SUCCESS;
}

int qla4xxx_get_default_ddb(struct scsi_qla_host *ha, dma_addr_t dma_addr)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));

	mbox_cmd[0] = MBOX_CMD_GET_DATABASE_ENTRY_DEFAULTS;
	mbox_cmd[2] = LSDW(dma_addr);
	mbox_cmd[3] = MSDW(dma_addr);

	if (qla4xxx_mailbox_command(ha, 4, 1, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
		     ha->host_no, __func__, mbox_sts[0]));
		return QLA_ERROR;
	}
	return QLA_SUCCESS;
}

int qla4xxx_req_ddb_entry(struct scsi_qla_host *ha, uint32_t *ddb_index)
{
	uint32_t mbox_cmd[MBOX_REG_COUNT];
	uint32_t mbox_sts[MBOX_REG_COUNT];

	memset(&mbox_cmd, 0, sizeof(mbox_cmd));
	memset(&mbox_sts, 0, sizeof(mbox_sts));

	mbox_cmd[0] = MBOX_CMD_REQUEST_DATABASE_ENTRY;
	mbox_cmd[1] = MAX_PRST_DEV_DB_ENTRIES;

	if (qla4xxx_mailbox_command(ha, 2, 3, &mbox_cmd[0], &mbox_sts[0]) !=
	    QLA_SUCCESS) {
		if (mbox_sts[0] == MBOX_STS_COMMAND_ERROR) {
			*ddb_index = mbox_sts[2];
		} else {
			DEBUG2(printk("scsi%ld: %s: failed status %04X\n",
			     ha->host_no, __func__, mbox_sts[0]));
			return QLA_ERROR;
		}
	} else {
		*ddb_index = MAX_PRST_DEV_DB_ENTRIES;
	}

	return QLA_SUCCESS;
}


int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
{
	struct dev_db_entry *fw_ddb_entry;
	dma_addr_t fw_ddb_entry_dma;
	uint32_t ddb_index;
	int ret_val = QLA_SUCCESS;


	fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
					  sizeof(*fw_ddb_entry),
					  &fw_ddb_entry_dma, GFP_KERNEL);
	if (!fw_ddb_entry) {
		DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
			      ha->host_no, __func__));
		ret_val = QLA_ERROR;
		goto qla4xxx_send_tgts_exit;
	}

	ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
	if (ret_val != QLA_SUCCESS)
		goto qla4xxx_send_tgts_exit;

	ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
	if (ret_val != QLA_SUCCESS)
		goto qla4xxx_send_tgts_exit;

	memset((void *)fw_ddb_entry->iSCSIAlias, 0,
	       sizeof(fw_ddb_entry->iSCSIAlias));

	memset((void *)fw_ddb_entry->iscsiName, 0,
	       sizeof(fw_ddb_entry->iscsiName));

	memset((void *)fw_ddb_entry->ipAddr, 0, sizeof(fw_ddb_entry->ipAddr));
	memset((void *)fw_ddb_entry->targetAddr, 0,
	       sizeof(fw_ddb_entry->targetAddr));

	fw_ddb_entry->options = (DDB_OPT_DISC_SESSION | DDB_OPT_TARGET);
	fw_ddb_entry->portNumber = cpu_to_le16(ntohs(port));

	fw_ddb_entry->ipAddr[0] = *ip;
	fw_ddb_entry->ipAddr[1] = *(ip + 1);
	fw_ddb_entry->ipAddr[2] = *(ip + 2);
	fw_ddb_entry->ipAddr[3] = *(ip + 3);

	ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);

qla4xxx_send_tgts_exit:
	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
			  fw_ddb_entry, fw_ddb_entry_dma);
	return ret_val;
}

OpenPOWER on IntegriCloud