• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * pata_amd.c 	- AMD PATA for new ATA layer
3  *			  (C) 2005-2006 Red Hat Inc
4  *
5  *  Based on pata-sil680. Errata information is taken from data sheets
6  *  and the amd74xx.c driver by Vojtech Pavlik. Nvidia SATA devices are
7  *  claimed by sata-nv.c.
8  *
9  *  TODO:
10  *	Variable system clock when/if it makes sense
11  *	Power management on ports
12  *
13  *
14  *  Documentation publicly available.
15  */
16 
17 #include <linux/kernel.h>
18 #include <linux/module.h>
19 #include <linux/pci.h>
20 #include <linux/blkdev.h>
21 #include <linux/delay.h>
22 #include <scsi/scsi_host.h>
23 #include <linux/libata.h>
24 
25 #define DRV_NAME "pata_amd"
26 #define DRV_VERSION "0.4.1"
27 
28 /**
29  *	timing_setup		-	shared timing computation and load
30  *	@ap: ATA port being set up
31  *	@adev: drive being configured
32  *	@offset: port offset
33  *	@speed: target speed
34  *	@clock: clock multiplier (number of times 33MHz for this part)
35  *
36  *	Perform the actual timing set up for Nvidia or AMD PATA devices.
37  *	The actual devices vary so they all call into this helper function
38  *	providing the clock multipler and offset (because AMD and Nvidia put
39  *	the ports at different locations).
40  */
41 
timing_setup(struct ata_port * ap,struct ata_device * adev,int offset,int speed,int clock)42 static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offset, int speed, int clock)
43 {
44 	static const unsigned char amd_cyc2udma[] = {
45 		6, 6, 5, 4, 0, 1, 1, 2, 2, 3, 3, 3, 3, 3, 3, 7
46 	};
47 
48 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
49 	struct ata_device *peer = ata_dev_pair(adev);
50 	int dn = ap->port_no * 2 + adev->devno;
51 	struct ata_timing at, apeer;
52 	int T, UT;
53 	const int amd_clock = 33333;	/* KHz. */
54 	u8 t;
55 
56 	T = 1000000000 / amd_clock;
57 	UT = T;
58 	if (clock >= 2)
59 		UT = T / 2;
60 
61 	if (ata_timing_compute(adev, speed, &at, T, UT) < 0) {
62 		dev_err(&pdev->dev, "unknown mode %d\n", speed);
63 		return;
64 	}
65 
66 	if (peer) {
67 		/* This may be over conservative */
68 		if (peer->dma_mode) {
69 			ata_timing_compute(peer, peer->dma_mode, &apeer, T, UT);
70 			ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
71 		}
72 		ata_timing_compute(peer, peer->pio_mode, &apeer, T, UT);
73 		ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
74 	}
75 
76 	if (speed == XFER_UDMA_5 && amd_clock <= 33333) at.udma = 1;
77 	if (speed == XFER_UDMA_6 && amd_clock <= 33333) at.udma = 15;
78 
79 	/*
80 	 *	Now do the setup work
81 	 */
82 
83 	/* Configure the address set up timing */
84 	pci_read_config_byte(pdev, offset + 0x0C, &t);
85 	t = (t & ~(3 << ((3 - dn) << 1))) | ((clamp_val(at.setup, 1, 4) - 1) << ((3 - dn) << 1));
86 	pci_write_config_byte(pdev, offset + 0x0C , t);
87 
88 	/* Configure the 8bit I/O timing */
89 	pci_write_config_byte(pdev, offset + 0x0E + (1 - (dn >> 1)),
90 		((clamp_val(at.act8b, 1, 16) - 1) << 4) | (clamp_val(at.rec8b, 1, 16) - 1));
91 
92 	/* Drive timing */
93 	pci_write_config_byte(pdev, offset + 0x08 + (3 - dn),
94 		((clamp_val(at.active, 1, 16) - 1) << 4) | (clamp_val(at.recover, 1, 16) - 1));
95 
96 	switch (clock) {
97 		case 1:
98 		t = at.udma ? (0xc0 | (clamp_val(at.udma, 2, 5) - 2)) : 0x03;
99 		break;
100 
101 		case 2:
102 		t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 2, 10)]) : 0x03;
103 		break;
104 
105 		case 3:
106 		t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 10)]) : 0x03;
107 		break;
108 
109 		case 4:
110 		t = at.udma ? (0xc0 | amd_cyc2udma[clamp_val(at.udma, 1, 15)]) : 0x03;
111 		break;
112 
113 		default:
114 			return;
115 	}
116 
117 	/* UDMA timing */
118 	if (at.udma)
119 		pci_write_config_byte(pdev, offset + 0x10 + (3 - dn), t);
120 }
121 
122 /**
123  *	amd_pre_reset		-	perform reset handling
124  *	@link: ATA link
125  *	@deadline: deadline jiffies for the operation
126  *
127  *	Reset sequence checking enable bits to see which ports are
128  *	active.
129  */
130 
amd_pre_reset(struct ata_link * link,unsigned long deadline)131 static int amd_pre_reset(struct ata_link *link, unsigned long deadline)
132 {
133 	static const struct pci_bits amd_enable_bits[] = {
134 		{ 0x40, 1, 0x02, 0x02 },
135 		{ 0x40, 1, 0x01, 0x01 }
136 	};
137 
138 	struct ata_port *ap = link->ap;
139 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
140 
141 	if (!pci_test_config_bits(pdev, &amd_enable_bits[ap->port_no]))
142 		return -ENOENT;
143 
144 	return ata_sff_prereset(link, deadline);
145 }
146 
147 /**
148  *	amd_cable_detect	-	report cable type
149  *	@ap: port
150  *
151  *	AMD controller/BIOS setups record the cable type in word 0x42
152  */
153 
amd_cable_detect(struct ata_port * ap)154 static int amd_cable_detect(struct ata_port *ap)
155 {
156 	static const u32 bitmask[2] = {0x03, 0x0C};
157 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
158 	u8 ata66;
159 
160 	pci_read_config_byte(pdev, 0x42, &ata66);
161 	if (ata66 & bitmask[ap->port_no])
162 		return ATA_CBL_PATA80;
163 	return ATA_CBL_PATA40;
164 }
165 
166 /**
167  *	amd_fifo_setup		-	set the PIO FIFO for ATA/ATAPI
168  *	@ap: ATA interface
169  *	@adev: ATA device
170  *
171  *	Set the PCI fifo for this device according to the devices present
172  *	on the bus at this point in time. We need to turn the post write buffer
173  *	off for ATAPI devices as we may need to issue a word sized write to the
174  *	device as the final I/O
175  */
176 
amd_fifo_setup(struct ata_port * ap)177 static void amd_fifo_setup(struct ata_port *ap)
178 {
179 	struct ata_device *adev;
180 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
181 	static const u8 fifobit[2] = { 0xC0, 0x30};
182 	u8 fifo = fifobit[ap->port_no];
183 	u8 r;
184 
185 
186 	ata_for_each_dev(adev, &ap->link, ENABLED) {
187 		if (adev->class == ATA_DEV_ATAPI)
188 			fifo = 0;
189 	}
190 	if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7411) /* FIFO is broken */
191 		fifo = 0;
192 
193 	/* On the later chips the read prefetch bits become no-op bits */
194 	pci_read_config_byte(pdev, 0x41, &r);
195 	r &= ~fifobit[ap->port_no];
196 	r |= fifo;
197 	pci_write_config_byte(pdev, 0x41, r);
198 }
199 
200 /**
201  *	amd33_set_piomode	-	set initial PIO mode data
202  *	@ap: ATA interface
203  *	@adev: ATA device
204  *
205  *	Program the AMD registers for PIO mode.
206  */
207 
amd33_set_piomode(struct ata_port * ap,struct ata_device * adev)208 static void amd33_set_piomode(struct ata_port *ap, struct ata_device *adev)
209 {
210 	amd_fifo_setup(ap);
211 	timing_setup(ap, adev, 0x40, adev->pio_mode, 1);
212 }
213 
amd66_set_piomode(struct ata_port * ap,struct ata_device * adev)214 static void amd66_set_piomode(struct ata_port *ap, struct ata_device *adev)
215 {
216 	amd_fifo_setup(ap);
217 	timing_setup(ap, adev, 0x40, adev->pio_mode, 2);
218 }
219 
amd100_set_piomode(struct ata_port * ap,struct ata_device * adev)220 static void amd100_set_piomode(struct ata_port *ap, struct ata_device *adev)
221 {
222 	amd_fifo_setup(ap);
223 	timing_setup(ap, adev, 0x40, adev->pio_mode, 3);
224 }
225 
amd133_set_piomode(struct ata_port * ap,struct ata_device * adev)226 static void amd133_set_piomode(struct ata_port *ap, struct ata_device *adev)
227 {
228 	amd_fifo_setup(ap);
229 	timing_setup(ap, adev, 0x40, adev->pio_mode, 4);
230 }
231 
232 /**
233  *	amd33_set_dmamode	-	set initial DMA mode data
234  *	@ap: ATA interface
235  *	@adev: ATA device
236  *
237  *	Program the MWDMA/UDMA modes for the AMD and Nvidia
238  *	chipset.
239  */
240 
amd33_set_dmamode(struct ata_port * ap,struct ata_device * adev)241 static void amd33_set_dmamode(struct ata_port *ap, struct ata_device *adev)
242 {
243 	timing_setup(ap, adev, 0x40, adev->dma_mode, 1);
244 }
245 
amd66_set_dmamode(struct ata_port * ap,struct ata_device * adev)246 static void amd66_set_dmamode(struct ata_port *ap, struct ata_device *adev)
247 {
248 	timing_setup(ap, adev, 0x40, adev->dma_mode, 2);
249 }
250 
amd100_set_dmamode(struct ata_port * ap,struct ata_device * adev)251 static void amd100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
252 {
253 	timing_setup(ap, adev, 0x40, adev->dma_mode, 3);
254 }
255 
amd133_set_dmamode(struct ata_port * ap,struct ata_device * adev)256 static void amd133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
257 {
258 	timing_setup(ap, adev, 0x40, adev->dma_mode, 4);
259 }
260 
261 /* Both host-side and drive-side detection results are worthless on NV
262  * PATAs.  Ignore them and just follow what BIOS configured.  Both the
263  * current configuration in PCI config reg and ACPI GTM result are
264  * cached during driver attach and are consulted to select transfer
265  * mode.
266  */
nv_mode_filter(struct ata_device * dev,unsigned long xfer_mask)267 static unsigned long nv_mode_filter(struct ata_device *dev,
268 				    unsigned long xfer_mask)
269 {
270 	static const unsigned int udma_mask_map[] =
271 		{ ATA_UDMA2, ATA_UDMA1, ATA_UDMA0, 0,
272 		  ATA_UDMA3, ATA_UDMA4, ATA_UDMA5, ATA_UDMA6 };
273 	struct ata_port *ap = dev->link->ap;
274 	char acpi_str[32] = "";
275 	u32 saved_udma, udma;
276 	const struct ata_acpi_gtm *gtm;
277 	unsigned long bios_limit = 0, acpi_limit = 0, limit;
278 
279 	/* find out what BIOS configured */
280 	udma = saved_udma = (unsigned long)ap->host->private_data;
281 
282 	if (ap->port_no == 0)
283 		udma >>= 16;
284 	if (dev->devno == 0)
285 		udma >>= 8;
286 
287 	if ((udma & 0xc0) == 0xc0)
288 		bios_limit = ata_pack_xfermask(0, 0, udma_mask_map[udma & 0x7]);
289 
290 	/* consult ACPI GTM too */
291 	gtm = ata_acpi_init_gtm(ap);
292 	if (gtm) {
293 		acpi_limit = ata_acpi_gtm_xfermask(dev, gtm);
294 
295 		snprintf(acpi_str, sizeof(acpi_str), " (%u:%u:0x%x)",
296 			 gtm->drive[0].dma, gtm->drive[1].dma, gtm->flags);
297 	}
298 
299 	/* be optimistic, EH can take care of things if something goes wrong */
300 	limit = bios_limit | acpi_limit;
301 
302 	/* If PIO or DMA isn't configured at all, don't limit.  Let EH
303 	 * handle it.
304 	 */
305 	if (!(limit & ATA_MASK_PIO))
306 		limit |= ATA_MASK_PIO;
307 	if (!(limit & (ATA_MASK_MWDMA | ATA_MASK_UDMA)))
308 		limit |= ATA_MASK_MWDMA | ATA_MASK_UDMA;
309 	/* PIO4, MWDMA2, UDMA2 should always be supported regardless of
310 	   cable detection result */
311 	limit |= ata_pack_xfermask(ATA_PIO4, ATA_MWDMA2, ATA_UDMA2);
312 
313 	ata_port_dbg(ap, "nv_mode_filter: 0x%lx&0x%lx->0x%lx, "
314 			"BIOS=0x%lx (0x%x) ACPI=0x%lx%s\n",
315 			xfer_mask, limit, xfer_mask & limit, bios_limit,
316 			saved_udma, acpi_limit, acpi_str);
317 
318 	return xfer_mask & limit;
319 }
320 
321 /**
322  *	nv_probe_init	-	cable detection
323  *	@lin: ATA link
324  *
325  *	Perform cable detection. The BIOS stores this in PCI config
326  *	space for us.
327  */
328 
nv_pre_reset(struct ata_link * link,unsigned long deadline)329 static int nv_pre_reset(struct ata_link *link, unsigned long deadline)
330 {
331 	static const struct pci_bits nv_enable_bits[] = {
332 		{ 0x50, 1, 0x02, 0x02 },
333 		{ 0x50, 1, 0x01, 0x01 }
334 	};
335 
336 	struct ata_port *ap = link->ap;
337 	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
338 
339 	if (!pci_test_config_bits(pdev, &nv_enable_bits[ap->port_no]))
340 		return -ENOENT;
341 
342 	return ata_sff_prereset(link, deadline);
343 }
344 
345 /**
346  *	nv100_set_piomode	-	set initial PIO mode data
347  *	@ap: ATA interface
348  *	@adev: ATA device
349  *
350  *	Program the AMD registers for PIO mode.
351  */
352 
nv100_set_piomode(struct ata_port * ap,struct ata_device * adev)353 static void nv100_set_piomode(struct ata_port *ap, struct ata_device *adev)
354 {
355 	timing_setup(ap, adev, 0x50, adev->pio_mode, 3);
356 }
357 
nv133_set_piomode(struct ata_port * ap,struct ata_device * adev)358 static void nv133_set_piomode(struct ata_port *ap, struct ata_device *adev)
359 {
360 	timing_setup(ap, adev, 0x50, adev->pio_mode, 4);
361 }
362 
363 /**
364  *	nv100_set_dmamode	-	set initial DMA mode data
365  *	@ap: ATA interface
366  *	@adev: ATA device
367  *
368  *	Program the MWDMA/UDMA modes for the AMD and Nvidia
369  *	chipset.
370  */
371 
nv100_set_dmamode(struct ata_port * ap,struct ata_device * adev)372 static void nv100_set_dmamode(struct ata_port *ap, struct ata_device *adev)
373 {
374 	timing_setup(ap, adev, 0x50, adev->dma_mode, 3);
375 }
376 
nv133_set_dmamode(struct ata_port * ap,struct ata_device * adev)377 static void nv133_set_dmamode(struct ata_port *ap, struct ata_device *adev)
378 {
379 	timing_setup(ap, adev, 0x50, adev->dma_mode, 4);
380 }
381 
nv_host_stop(struct ata_host * host)382 static void nv_host_stop(struct ata_host *host)
383 {
384 	u32 udma = (unsigned long)host->private_data;
385 
386 	/* restore PCI config register 0x60 */
387 	pci_write_config_dword(to_pci_dev(host->dev), 0x60, udma);
388 }
389 
390 static struct scsi_host_template amd_sht = {
391 	ATA_BMDMA_SHT(DRV_NAME),
392 };
393 
394 static const struct ata_port_operations amd_base_port_ops = {
395 	.inherits	= &ata_bmdma32_port_ops,
396 	.prereset	= amd_pre_reset,
397 };
398 
399 static struct ata_port_operations amd33_port_ops = {
400 	.inherits	= &amd_base_port_ops,
401 	.cable_detect	= ata_cable_40wire,
402 	.set_piomode	= amd33_set_piomode,
403 	.set_dmamode	= amd33_set_dmamode,
404 };
405 
406 static struct ata_port_operations amd66_port_ops = {
407 	.inherits	= &amd_base_port_ops,
408 	.cable_detect	= ata_cable_unknown,
409 	.set_piomode	= amd66_set_piomode,
410 	.set_dmamode	= amd66_set_dmamode,
411 };
412 
413 static struct ata_port_operations amd100_port_ops = {
414 	.inherits	= &amd_base_port_ops,
415 	.cable_detect	= ata_cable_unknown,
416 	.set_piomode	= amd100_set_piomode,
417 	.set_dmamode	= amd100_set_dmamode,
418 };
419 
420 static struct ata_port_operations amd133_port_ops = {
421 	.inherits	= &amd_base_port_ops,
422 	.cable_detect	= amd_cable_detect,
423 	.set_piomode	= amd133_set_piomode,
424 	.set_dmamode	= amd133_set_dmamode,
425 };
426 
427 static const struct ata_port_operations nv_base_port_ops = {
428 	.inherits	= &ata_bmdma_port_ops,
429 	.cable_detect	= ata_cable_ignore,
430 	.mode_filter	= nv_mode_filter,
431 	.prereset	= nv_pre_reset,
432 	.host_stop	= nv_host_stop,
433 };
434 
435 static struct ata_port_operations nv100_port_ops = {
436 	.inherits	= &nv_base_port_ops,
437 	.set_piomode	= nv100_set_piomode,
438 	.set_dmamode	= nv100_set_dmamode,
439 };
440 
441 static struct ata_port_operations nv133_port_ops = {
442 	.inherits	= &nv_base_port_ops,
443 	.set_piomode	= nv133_set_piomode,
444 	.set_dmamode	= nv133_set_dmamode,
445 };
446 
amd_clear_fifo(struct pci_dev * pdev)447 static void amd_clear_fifo(struct pci_dev *pdev)
448 {
449 	u8 fifo;
450 	/* Disable the FIFO, the FIFO logic will re-enable it as
451 	   appropriate */
452 	pci_read_config_byte(pdev, 0x41, &fifo);
453 	fifo &= 0x0F;
454 	pci_write_config_byte(pdev, 0x41, fifo);
455 }
456 
amd_init_one(struct pci_dev * pdev,const struct pci_device_id * id)457 static int amd_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
458 {
459 	static const struct ata_port_info info[10] = {
460 		{	/* 0: AMD 7401 - no swdma */
461 			.flags = ATA_FLAG_SLAVE_POSS,
462 			.pio_mask = ATA_PIO4,
463 			.mwdma_mask = ATA_MWDMA2,
464 			.udma_mask = ATA_UDMA2,
465 			.port_ops = &amd33_port_ops
466 		},
467 		{	/* 1: Early AMD7409 - no swdma */
468 			.flags = ATA_FLAG_SLAVE_POSS,
469 			.pio_mask = ATA_PIO4,
470 			.mwdma_mask = ATA_MWDMA2,
471 			.udma_mask = ATA_UDMA4,
472 			.port_ops = &amd66_port_ops
473 		},
474 		{	/* 2: AMD 7409 */
475 			.flags = ATA_FLAG_SLAVE_POSS,
476 			.pio_mask = ATA_PIO4,
477 			.mwdma_mask = ATA_MWDMA2,
478 			.udma_mask = ATA_UDMA4,
479 			.port_ops = &amd66_port_ops
480 		},
481 		{	/* 3: AMD 7411 */
482 			.flags = ATA_FLAG_SLAVE_POSS,
483 			.pio_mask = ATA_PIO4,
484 			.mwdma_mask = ATA_MWDMA2,
485 			.udma_mask = ATA_UDMA5,
486 			.port_ops = &amd100_port_ops
487 		},
488 		{	/* 4: AMD 7441 */
489 			.flags = ATA_FLAG_SLAVE_POSS,
490 			.pio_mask = ATA_PIO4,
491 			.mwdma_mask = ATA_MWDMA2,
492 			.udma_mask = ATA_UDMA5,
493 			.port_ops = &amd100_port_ops
494 		},
495 		{	/* 5: AMD 8111 - no swdma */
496 			.flags = ATA_FLAG_SLAVE_POSS,
497 			.pio_mask = ATA_PIO4,
498 			.mwdma_mask = ATA_MWDMA2,
499 			.udma_mask = ATA_UDMA6,
500 			.port_ops = &amd133_port_ops
501 		},
502 		{	/* 6: AMD 8111 UDMA 100 (Serenade) - no swdma */
503 			.flags = ATA_FLAG_SLAVE_POSS,
504 			.pio_mask = ATA_PIO4,
505 			.mwdma_mask = ATA_MWDMA2,
506 			.udma_mask = ATA_UDMA5,
507 			.port_ops = &amd133_port_ops
508 		},
509 		{	/* 7: Nvidia Nforce */
510 			.flags = ATA_FLAG_SLAVE_POSS,
511 			.pio_mask = ATA_PIO4,
512 			.mwdma_mask = ATA_MWDMA2,
513 			.udma_mask = ATA_UDMA5,
514 			.port_ops = &nv100_port_ops
515 		},
516 		{	/* 8: Nvidia Nforce2 and later - no swdma */
517 			.flags = ATA_FLAG_SLAVE_POSS,
518 			.pio_mask = ATA_PIO4,
519 			.mwdma_mask = ATA_MWDMA2,
520 			.udma_mask = ATA_UDMA6,
521 			.port_ops = &nv133_port_ops
522 		},
523 		{	/* 9: AMD CS5536 (Geode companion) */
524 			.flags = ATA_FLAG_SLAVE_POSS,
525 			.pio_mask = ATA_PIO4,
526 			.mwdma_mask = ATA_MWDMA2,
527 			.udma_mask = ATA_UDMA5,
528 			.port_ops = &amd100_port_ops
529 		}
530 	};
531 	const struct ata_port_info *ppi[] = { NULL, NULL };
532 	int type = id->driver_data;
533 	void *hpriv = NULL;
534 	u8 fifo;
535 	int rc;
536 
537 	ata_print_version_once(&pdev->dev, DRV_VERSION);
538 
539 	rc = pcim_enable_device(pdev);
540 	if (rc)
541 		return rc;
542 
543 	pci_read_config_byte(pdev, 0x41, &fifo);
544 
545 	/* Check for AMD7409 without swdma errata and if found adjust type */
546 	if (type == 1 && pdev->revision > 0x7)
547 		type = 2;
548 
549 	/* Serenade ? */
550 	if (type == 5 && pdev->subsystem_vendor == PCI_VENDOR_ID_AMD &&
551 			 pdev->subsystem_device == PCI_DEVICE_ID_AMD_SERENADE)
552 		type = 6;	/* UDMA 100 only */
553 
554 	/*
555 	 * Okay, type is determined now.  Apply type-specific workarounds.
556 	 */
557 	ppi[0] = &info[type];
558 
559 	if (type < 3)
560 		ata_pci_bmdma_clear_simplex(pdev);
561 	if (pdev->vendor == PCI_VENDOR_ID_AMD)
562 		amd_clear_fifo(pdev);
563 	/* Cable detection on Nvidia chips doesn't work too well,
564 	 * cache BIOS programmed UDMA mode.
565 	 */
566 	if (type == 7 || type == 8) {
567 		u32 udma;
568 
569 		pci_read_config_dword(pdev, 0x60, &udma);
570 		hpriv = (void *)(unsigned long)udma;
571 	}
572 
573 	/* And fire it up */
574 	return ata_pci_bmdma_init_one(pdev, ppi, &amd_sht, hpriv, 0);
575 }
576 
577 #ifdef CONFIG_PM_SLEEP
amd_reinit_one(struct pci_dev * pdev)578 static int amd_reinit_one(struct pci_dev *pdev)
579 {
580 	struct ata_host *host = pci_get_drvdata(pdev);
581 	int rc;
582 
583 	rc = ata_pci_device_do_resume(pdev);
584 	if (rc)
585 		return rc;
586 
587 	if (pdev->vendor == PCI_VENDOR_ID_AMD) {
588 		amd_clear_fifo(pdev);
589 		if (pdev->device == PCI_DEVICE_ID_AMD_VIPER_7409 ||
590 		    pdev->device == PCI_DEVICE_ID_AMD_COBRA_7401)
591 			ata_pci_bmdma_clear_simplex(pdev);
592 	}
593 	ata_host_resume(host);
594 	return 0;
595 }
596 #endif
597 
598 static const struct pci_device_id amd[] = {
599 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_COBRA_7401),		0 },
600 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_VIPER_7409),		1 },
601 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_VIPER_7411),		3 },
602 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_OPUS_7441),		4 },
603 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_8111_IDE),		5 },
604 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_IDE),	7 },
605 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE),	8 },
606 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE2S_IDE),	8 },
607 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE3_IDE),	8 },
608 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE3S_IDE),	8 },
609 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_CK804_IDE),	8 },
610 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_IDE),	8 },
611 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_IDE),	8 },
612 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_IDE),	8 },
613 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP61_IDE),	8 },
614 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP65_IDE),	8 },
615 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP67_IDE),	8 },
616 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_IDE),	8 },
617 	{ PCI_VDEVICE(NVIDIA,	PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE),	8 },
618 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_CS5536_IDE),		9 },
619 	{ PCI_VDEVICE(AMD,	PCI_DEVICE_ID_AMD_CS5536_DEV_IDE),	9 },
620 
621 	{ },
622 };
623 
624 static struct pci_driver amd_pci_driver = {
625 	.name 		= DRV_NAME,
626 	.id_table	= amd,
627 	.probe 		= amd_init_one,
628 	.remove		= ata_pci_remove_one,
629 #ifdef CONFIG_PM_SLEEP
630 	.suspend	= ata_pci_device_suspend,
631 	.resume		= amd_reinit_one,
632 #endif
633 };
634 
635 module_pci_driver(amd_pci_driver);
636 
637 MODULE_AUTHOR("Alan Cox");
638 MODULE_DESCRIPTION("low-level driver for AMD and Nvidia PATA IDE");
639 MODULE_LICENSE("GPL");
640 MODULE_DEVICE_TABLE(pci, amd);
641 MODULE_VERSION(DRV_VERSION);
642