summaryrefslogtreecommitdiffstats
path: root/drivers/ata/pata_amd.c
blob: 536ee892ab72da7aa2b789010c1bf60381de893d (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
/*
 * pata_amd.c 	- AMD PATA for new ATA layer
 *			  (C) 2005-2006 Red Hat Inc
 *			  Alan Cox <alan@redhat.com>
 *
 *  Based on pata-sil680. Errata information is taken from data sheets
 *  and the amd74xx.c driver by Vojtech Pavlik. Nvidia SATA devices are
 *  claimed by sata-nv.c.
 *
 *  TODO:
 *	Variable system clock when/if it makes sense
 *	Power management on ports
 *
 *
 *  Documentation publically available.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <scsi/scsi_host.h>
#include <linux/libata.h>

#define DRV_NAME "pata_amd"
#define DRV_VERSION "0.3.8"

/**
 *	timing_setup		-	shared timing computation and load
 *	@ap: ATA port being set up
 *	@adev: drive being configured
 *	@offset: port offset
 *	@speed: target speed
 *	@clock: clock multiplier (number of times 33MHz for this part)
 *
 *	Perform the actual timing set up for Nvidia or AMD PATA devices.
 *	The actual devices vary so they all call into this helper function
 *	providing the clock multipler and offset (because AMD and Nvidia put
 *	the ports at different locations).
 */

static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offset, int speed, int clock)
{
	static const unsigned char amd_cyc2udma[] = {
		6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
	};

	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	struct ata_device *peer = ata_dev_pair(adev);
	int dn = ap->port_no * 2 + adev->devno;
	struct ata_timing at, apeer;
	int T, UT;
	const int amd_clock = 33333;	/* KHz. */
	u8 t;

	T = 1000000000 / amd_clock;
	UT = T / min_t(int, max_t(int, clock, 1), 2);

	if (ata_timing_compute(adev, speed, &at, T, UT) < 0) {
		dev_printk(KERN_ERR, &pdev->dev, "unknown mode %d.\n", speed);
		return;
	}

	if (peer) {
		/* This may be over conservative */
		if (peer->dma_mode) {
			ata_timing_compute(peer, peer->dma_mode, &apeer, T, UT);
			ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
		}
		ata_timing_compute(peer, peer->pio_mode, &apeer, T, UT);
		ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
	}

	if (speed == XFER_UDMA_5 && amd_clock <= 33333) at.udma = 1;
	if (speed == XFER_UDMA_6 && amd_clock <= 33333) at.udma = 15;

	/*
	 *	Now do the setup work
	 */

	/* Configure the address set up timing */
	pci_read_config_byte(pdev, offset + 0x0C, &t);
	t = (t & ~(3 << ((3 - dn) << 1))) | ((FIT(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
	pci_write_config_byte(pdev, offset + 0x0C , t);

	/* Configure the 8bit I/O timing */
	pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
		((FIT(at.act8b, 1, 16) - 1) << 4) | (FIT(at.rec8b, 1, 16) - 1));

	/* Drive timing */
	pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
		((FIT(at.active, 1, 16) - 1) << 4) | (FIT(at.recover, 1, 16) - 1));

	switch (clock) {
		case 1:
		t = at.udma ? (0xc0 | (FIT(at.udma, 2, 5) - 2)) : 0x03;
		break;

		case 2:
		t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 2, 10)]) : 0x03;
		break;

		case 3:
		t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 10)]) : 0x03;
		break;

		case 4:
		t = at.udma ? (0xc0 | amd_cyc2udma[FIT(at.udma, 1, 15)]) : 0x03;
		break;

		default:
			return;
	}

	/* UDMA timing */
	pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
}

/**
 *	amd_probe_init		-	perform reset handling
 *	@ap: ATA port
 *
 *	Reset sequence checking enable bits to see which ports are
 *	active.
 */

static int amd_pre_reset(struct ata_port *ap)
{
	static const struct pci_bits amd_enable_bits[] = {
		{ 0x40, 1, 0x02, 0x02 },
		{ 0x40, 1, 0x01, 0x01 }
	};

	struct pci_dev *pdev = to_pci_dev(ap->host->dev);

	if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
		return -ENOENT;

	return ata_std_prereset(ap);

}

static void amd_error_handler(struct ata_port *ap)
{
	return ata_bmdma_drive_eh(ap, amd_pre_reset,
				      ata_std_softreset, NULL,
				      ata_std_postreset);
}

static int amd_cable_detect(struct ata_port *ap)
{
	static const u32 bitmask[2] = {0x03, 0x0C};
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u8 ata66;

	pci_read_config_byte(pdev, 0x42, &ata66);
	if (ata66 & bitmask[ap->port_no])
		return ATA_CBL_PATA80;
	return ATA_CBL_PATA40;
}

/**
 *	amd33_set_piomode	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Program the AMD registers for PIO mode.
 */

static void amd33_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->pio_mode, 1);
}

static void amd66_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->pio_mode, 2);
}

static void amd100_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->pio_mode, 3);
}

static void amd133_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->pio_mode, 4);
}

/**
 *	amd33_set_dmamode	-	set initial DMA mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Program the MWDMA/UDMA modes for the AMD and Nvidia
 *	chipset.
 */

static void amd33_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->dma_mode, 1);
}

static void amd66_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->dma_mode, 2);
}

static void amd100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->dma_mode, 3);
}

static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x40, adev->dma_mode, 4);
}


/**
 *	nv_probe_init	-	cable detection
 *	@ap: ATA port
 *
 *	Perform cable detection. The BIOS stores this in PCI config
 *	space for us.
 */

static int nv_pre_reset(struct ata_port *ap) {
	static const struct pci_bits nv_enable_bits[] = {
		{ 0x50, 1, 0x02, 0x02 },
		{ 0x50, 1, 0x01, 0x01 }
	};

	struct pci_dev *pdev = to_pci_dev(ap->host->dev);

	if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
		return -ENOENT;

	return ata_std_prereset(ap);
}

static void nv_error_handler(struct ata_port *ap)
{
	ata_bmdma_drive_eh(ap, nv_pre_reset,
			       ata_std_softreset, NULL,
			       ata_std_postreset);
}

static int nv_cable_detect(struct ata_port *ap)
{
	static const u8 bitmask[2] = {0x03, 0x0C};
	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
	u8 ata66;
	u16 udma;
	int cbl;

	pci_read_config_byte(pdev, 0x52, &ata66);
	if (ata66 & bitmask[ap->port_no])
		cbl = ATA_CBL_PATA80;
	else
		cbl = ATA_CBL_PATA40;

 	/* We now have to double check because the Nvidia boxes BIOS
 	   doesn't always set the cable bits but does set mode bits */
 	pci_read_config_word(pdev, 0x62 - 2 * ap->port_no, &udma);
 	if ((udma & 0xC4) == 0xC4 || (udma & 0xC400) == 0xC400)
		cbl = ATA_CBL_PATA80;
	return cbl;
}

/**
 *	nv100_set_piomode	-	set initial PIO mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Program the AMD registers for PIO mode.
 */

static void nv100_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x50, adev->pio_mode, 3);
}

static void nv133_set_piomode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x50, adev->pio_mode, 4);
}

/**
 *	nv100_set_dmamode	-	set initial DMA mode data
 *	@ap: ATA interface
 *	@adev: ATA device
 *
 *	Program the MWDMA/UDMA modes for the AMD and Nvidia
 *	chipset.
 */

static void nv100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x50, adev->dma_mode, 3);
}

static void nv133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
{
	timing_setup(ap, adev, 0x50, adev->dma_mode, 4);
}

static struct scsi_host_template amd_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.slave_destroy		= ata_scsi_slave_destroy,
	.bios_param		= ata_std_bios_param,
#ifdef CONFIG_PM
	.resume			= ata_scsi_device_resume,
	.suspend		= ata_scsi_device_suspend,
#endif
};

static struct ata_port_operations amd33_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= amd33_set_piomode,
	.set_dmamode	= amd33_set_dmamode,
	.mode_filter	= ata_pci_default_filter,
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= amd_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= ata_cable_40wire,

	.bmdma_setup 	= ata_bmdma_setup,
	.bmdma_start 	= ata_bmdma_start,
	.bmdma_stop	= ata_bmdma_stop,
	.bmdma_status 	= ata_bmdma_status,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

static struct ata_port_operations amd66_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= amd66_set_piomode,
	.set_dmamode	= amd66_set_dmamode,
	.mode_filter	= ata_pci_default_filter,
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= amd_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= ata_cable_unknown,

	.bmdma_setup 	= ata_bmdma_setup,
	.bmdma_start 	= ata_bmdma_start,
	.bmdma_stop	= ata_bmdma_stop,
	.bmdma_status 	= ata_bmdma_status,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

static struct ata_port_operations amd100_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= amd100_set_piomode,
	.set_dmamode	= amd100_set_dmamode,
	.mode_filter	= ata_pci_default_filter,
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= amd_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= ata_cable_unknown,

	.bmdma_setup 	= ata_bmdma_setup,
	.bmdma_start 	= ata_bmdma_start,
	.bmdma_stop	= ata_bmdma_stop,
	.bmdma_status 	= ata_bmdma_status,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

static struct ata_port_operations amd133_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= amd133_set_piomode,
	.set_dmamode	= amd133_set_dmamode,
	.mode_filter	= ata_pci_default_filter,
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= amd_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= amd_cable_detect,

	.bmdma_setup 	= ata_bmdma_setup,
	.bmdma_start 	= ata_bmdma_start,
	.bmdma_stop	= ata_bmdma_stop,
	.bmdma_status 	= ata_bmdma_status,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

static struct ata_port_operations nv100_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= nv100_set_piomode,
	.set_dmamode	= nv100_set_dmamode,
	.mode_filter	= ata_pci_default_filter,
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= nv_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= nv_cable_detect,

	.bmdma_setup 	= ata_bmdma_setup,
	.bmdma_start 	= ata_bmdma_start,
	.bmdma_stop	= ata_bmdma_stop,
	.bmdma_status 	= ata_bmdma_status,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

static struct ata_port_operations nv133_port_ops = {
	.port_disable	= ata_port_disable,
	.set_piomode	= nv133_set_piomode,
	.set_dmamode	= nv133_set_dmamode,
	.mode_filter	= ata_pci_default_filter,
	.tf_load	= ata_tf_load,
	.tf_read	= ata_tf_read,
	.check_status 	= ata_check_status,
	.exec_command	= ata_exec_command,
	.dev_select 	= ata_std_dev_select,

	.freeze		= ata_bmdma_freeze,
	.thaw		= ata_bmdma_thaw,
	.error_handler	= nv_error_handler,
	.post_internal_cmd = ata_bmdma_post_internal_cmd,
	.cable_detect	= nv_cable_detect,

	.bmdma_setup 	= ata_bmdma_setup,
	.bmdma_start 	= ata_bmdma_start,
	.bmdma_stop	= ata_bmdma_stop,
	.bmdma_status 	= ata_bmdma_status,

	.qc_prep 	= ata_qc_prep,
	.qc_issue	= ata_qc_issue_prot,

	.data_xfer	= ata_data_xfer,

	.irq_handler	= ata_interrupt,
	.irq_clear	= ata_bmdma_irq_clear,
	.irq_on		= ata_irq_on,
	.irq_ack	= ata_irq_ack,

	.port_start	= ata_port_start,
};

static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
	static struct ata_port_info info[10] = {
		{	/* 0: AMD 7401 */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,	/* No SWDMA */
			.udma_mask = 0x07,	/* UDMA 33 */
			.port_ops = &amd33_port_ops
		},
		{	/* 1: Early AMD7409 - no swdma */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x1f,	/* UDMA 66 */
			.port_ops = &amd66_port_ops
		},
		{	/* 2: AMD 7409, no swdma errata */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x1f,	/* UDMA 66 */
			.port_ops = &amd66_port_ops
		},
		{	/* 3: AMD 7411 */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x3f,	/* UDMA 100 */
			.port_ops = &amd100_port_ops
		},
		{	/* 4: AMD 7441 */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x3f,	/* UDMA 100 */
			.port_ops = &amd100_port_ops
		},
		{	/* 5: AMD 8111*/
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x7f,	/* UDMA 133, no swdma */
			.port_ops = &amd133_port_ops
		},
		{	/* 6: AMD 8111 UDMA 100 (Serenade) */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x3f,	/* UDMA 100, no swdma */
			.port_ops = &amd133_port_ops
		},
		{	/* 7: Nvidia Nforce */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x3f,	/* UDMA 100 */
			.port_ops = &nv100_port_ops
		},
		{	/* 8: Nvidia Nforce2 and later */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x7f,	/* UDMA 133, no swdma */
			.port_ops = &nv133_port_ops
		},
		{	/* 9: AMD CS5536 (Geode companion) */
			.sht = &amd_sht,
			.flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_SRST,
			.pio_mask = 0x1f,
			.mwdma_mask = 0x07,
			.udma_mask = 0x3f,	/* UDMA 100 */
			.port_ops = &amd100_port_ops
		}
	};
	static struct ata_port_info *port_info[2];
	static int printed_version;
	int type = id->driver_data;
	u8 rev;
	u8 fifo;

	if (!printed_version++)
		dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");

	pci_read_config_byte(pdev, PCI_REVISION_ID, &rev);
	pci_read_config_byte(pdev, 0x41, &fifo);

	/* Check for AMD7409 without swdma errata and if found adjust type */
	if (type == 1 && rev > 0x7)
		type = 2;

	/* Check for AMD7411 */
	if (type == 3)
		/* FIFO is broken */
		pci_write_config_byte(pdev, 0x41, fifo & 0x0F);
	else
		pci_write_config_byte(pdev, 0x41, fifo | 0xF0);

	/* Serenade ? */
	if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
			 pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
		type = 6;	/* UDMA 100 only */

	if (type < 3)
		ata_pci_clear_simplex(pdev);

	/* And fire it up */

	port_info[0] = port_info[1] = &info[type];
	return ata_pci_init_one(pdev, port_info, 2);
}

#ifdef CONFIG_PM
static int amd_reinit_one(struct pci_dev *pdev)
{
	if (pdev->vendor == PCI_VENDOR_ID_AMD) {
		u8 fifo;
		pci_read_config_byte(pdev, 0x41, &fifo);
		if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7411)
			/* FIFO is broken */
			pci_write_config_byte(pdev, 0x41, fifo & 0x0F);
		else
			pci_write_config_byte(pdev, 0x41, fifo | 0xF0);
		if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7409 ||
		    pdev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
		    	ata_pci_clear_simplex(pdev);
	}
	return ata_pci_device_resume(pdev);
}
#endif

static const struct pci_device_id amd[] = {
	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_COBRA_7401),		0 },
	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_VIPER_7409),		1 },
	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_VIPER_7411),		3 },
	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_OPUS_7441),		4 },
	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_8111_IDE),		5 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_IDE),	7 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE),	8 },
	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE),	8 },
	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_CS5536_IDE),		9 },

	{ },
};

static struct pci_driver amd_pci_driver = {
	.name 		= DRV_NAME,
	.id_table	= amd,
	.probe 		= amd_init_one,
	.remove		= ata_pci_remove_one,
#ifdef CONFIG_PM
	.suspend	= ata_pci_device_suspend,
	.resume		= amd_reinit_one,
#endif
};

static int __init amd_init(void)
{
	return pci_register_driver(&amd_pci_driver);
}

static void __exit amd_exit(void)
{
	pci_unregister_driver(&amd_pci_driver);
}

MODULE_AUTHOR("Alan Cox");
MODULE_DESCRIPTION("low-level driver for AMD PATA IDE");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, amd);
MODULE_VERSION(DRV_VERSION);

module_init(amd_init);
module_exit(amd_exit);
OpenPOWER on IntegriCloud