2 * pata_sis.c - SiS ATA driver
5 * (C) 2007,2009 Bartlomiej Zolnierkiewicz
7 * Based upon linux/drivers/ide/pci/sis5513.c
8 * Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
9 * Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
10 * Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
11 * SiS Taiwan : for direct support and hardware.
12 * Daniela Engert : for initial ATA100 advices and numerous others.
13 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
14 * for checking code correctness, providing patches.
15 * Original tests and design on the SiS620 chipset.
16 * ATA100 tests and design on the SiS735 chipset.
17 * ATA16/33 support from specs
18 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
22 * Check MWDMA on drives that don't support MWDMA speed pio cycles ?
26 #include <linux/kernel.h>
27 #include <linux/module.h>
28 #include <linux/pci.h>
29 #include <linux/init.h>
30 #include <linux/blkdev.h>
31 #include <linux/delay.h>
32 #include <linux/device.h>
33 #include <scsi/scsi_host.h>
34 #include <linux/libata.h>
35 #include <linux/ata.h>
38 #define DRV_NAME "pata_sis"
39 #define DRV_VERSION "0.5.2"
42 u16 device; /* PCI host ID */
43 const struct ata_port_info *info; /* Info block */
44 /* Probably add family, cable detect type etc here to clean
54 static const struct sis_laptop sis_laptop[] = {
55 /* devid, subvendor, subdev */
56 { 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */
57 { 0x5513, 0x1734, 0x105F }, /* FSC Amilo A1630 */
58 { 0x5513, 0x1071, 0x8640 }, /* EasyNote K5305 */
63 static int sis_short_ata40(struct pci_dev *dev)
65 const struct sis_laptop *lap = &sis_laptop[0];
68 if (lap->device == dev->device &&
69 lap->subvendor == dev->subsystem_vendor &&
70 lap->subdevice == dev->subsystem_device)
79 * sis_old_port_base - return PCI configuration base for dev
82 * Returns the base of the PCI configuration registers for this port
86 static int sis_old_port_base(struct ata_device *adev)
88 return 0x40 + (4 * adev->link->ap->port_no) + (2 * adev->devno);
92 * sis_133_cable_detect - check for 40/80 pin
94 * @deadline: deadline jiffies for the operation
96 * Perform cable detection for the later UDMA133 capable
100 static int sis_133_cable_detect(struct ata_port *ap)
102 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
105 /* The top bit of this register is the cable detect bit */
106 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
107 if ((tmp & 0x8000) && !sis_short_ata40(pdev))
108 return ATA_CBL_PATA40;
109 return ATA_CBL_PATA80;
113 * sis_66_cable_detect - check for 40/80 pin
116 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133
117 * SiS IDE controllers.
120 static int sis_66_cable_detect(struct ata_port *ap)
122 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
125 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */
126 pci_read_config_byte(pdev, 0x48, &tmp);
128 if ((tmp & 0x10) && !sis_short_ata40(pdev))
129 return ATA_CBL_PATA40;
130 return ATA_CBL_PATA80;
135 * sis_pre_reset - probe begin
137 * @deadline: deadline jiffies for the operation
139 * Set up cable type and use generic probe init
142 static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
144 static const struct pci_bits sis_enable_bits[] = {
145 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
146 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
149 struct ata_port *ap = link->ap;
150 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
152 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
155 /* Clear the FIFO settings. We can't enable the FIFO until
156 we know we are poking at a disk */
157 pci_write_config_byte(pdev, 0x4B, 0);
158 return ata_sff_prereset(link, deadline);
163 * sis_set_fifo - Set RWP fifo bits for this device
167 * SIS chipsets implement prefetch/postwrite bits for each device
168 * on both channels. This functionality is not ATAPI compatible and
169 * must be configured according to the class of device present
172 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
174 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
178 mask <<= (2 * ap->port_no);
179 mask <<= adev->devno;
181 /* This holds various bits including the FIFO control */
182 pci_read_config_byte(pdev, 0x4B, &fifoctrl);
185 /* Enable for ATA (disk) only */
186 if (adev->class == ATA_DEV_ATA)
188 pci_write_config_byte(pdev, 0x4B, fifoctrl);
192 * sis_old_set_piomode - Initialize host controller PATA PIO timings
193 * @ap: Port whose timings we are configuring
194 * @adev: Device we are configuring for.
196 * Set PIO mode for device, in host controller PCI config space. This
197 * function handles PIO set up for all chips that are pre ATA100 and
198 * also early ATA100 devices.
201 * None (inherited from caller).
204 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
206 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
207 int port = sis_old_port_base(adev);
209 int speed = adev->pio_mode - XFER_PIO_0;
211 const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
212 const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
214 sis_set_fifo(ap, adev);
216 pci_read_config_byte(pdev, port, &t1);
217 pci_read_config_byte(pdev, port + 1, &t2);
219 t1 &= ~0x0F; /* Clear active/recovery timings */
223 t2 |= recovery[speed];
225 pci_write_config_byte(pdev, port, t1);
226 pci_write_config_byte(pdev, port + 1, t2);
230 * sis_100_set_piomode - Initialize host controller PATA PIO timings
231 * @ap: Port whose timings we are configuring
232 * @adev: Device we are configuring for.
234 * Set PIO mode for device, in host controller PCI config space. This
235 * function handles PIO set up for ATA100 devices and early ATA133.
238 * None (inherited from caller).
241 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
243 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
244 int port = sis_old_port_base(adev);
245 int speed = adev->pio_mode - XFER_PIO_0;
247 const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
249 sis_set_fifo(ap, adev);
251 pci_write_config_byte(pdev, port, actrec[speed]);
255 * sis_133_set_piomode - Initialize host controller PATA PIO timings
256 * @ap: Port whose timings we are configuring
257 * @adev: Device we are configuring for.
259 * Set PIO mode for device, in host controller PCI config space. This
260 * function handles PIO set up for the later ATA133 devices.
263 * None (inherited from caller).
266 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
268 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
272 int speed = adev->pio_mode - XFER_PIO_0;
274 const u32 timing133[] = {
275 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
281 const u32 timing100[] = {
282 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
289 sis_set_fifo(ap, adev);
291 /* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
292 pci_read_config_dword(pdev, 0x54, ®54);
293 if (reg54 & 0x40000000)
295 port += 8 * ap->port_no + 4 * adev->devno;
297 pci_read_config_dword(pdev, port, &t1);
298 t1 &= 0xC0C00FFF; /* Mask out timing */
300 if (t1 & 0x08) /* 100 or 133 ? */
301 t1 |= timing133[speed];
303 t1 |= timing100[speed];
304 pci_write_config_byte(pdev, port, t1);
308 * sis_old_set_dmamode - Initialize host controller PATA DMA timings
309 * @ap: Port whose timings we are configuring
310 * @adev: Device to program
312 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
313 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
314 * the old ide/pci driver.
317 * None (inherited from caller).
320 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
322 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
323 int speed = adev->dma_mode - XFER_MW_DMA_0;
324 int drive_pci = sis_old_port_base(adev);
327 const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
328 const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
330 pci_read_config_word(pdev, drive_pci, &timing);
332 if (adev->dma_mode < XFER_UDMA_0) {
333 /* bits 3-0 hold recovery timing bits 8-10 active timing and
334 the higher bits are dependent on the device */
336 timing |= mwdma_bits[speed];
338 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
339 speed = adev->dma_mode - XFER_UDMA_0;
341 timing |= udma_bits[speed];
343 pci_write_config_word(pdev, drive_pci, timing);
347 * sis_66_set_dmamode - Initialize host controller PATA DMA timings
348 * @ap: Port whose timings we are configuring
349 * @adev: Device to program
351 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
352 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
353 * the old ide/pci driver.
356 * None (inherited from caller).
359 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
361 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
362 int speed = adev->dma_mode - XFER_MW_DMA_0;
363 int drive_pci = sis_old_port_base(adev);
366 /* MWDMA 0-2 and UDMA 0-5 */
367 const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
368 const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
370 pci_read_config_word(pdev, drive_pci, &timing);
372 if (adev->dma_mode < XFER_UDMA_0) {
373 /* bits 3-0 hold recovery timing bits 8-10 active timing and
374 the higher bits are dependent on the device, bit 15 udma */
376 timing |= mwdma_bits[speed];
378 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
379 speed = adev->dma_mode - XFER_UDMA_0;
381 timing |= udma_bits[speed];
383 pci_write_config_word(pdev, drive_pci, timing);
387 * sis_100_set_dmamode - Initialize host controller PATA DMA timings
388 * @ap: Port whose timings we are configuring
389 * @adev: Device to program
391 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
392 * Handles UDMA66 and early UDMA100 devices.
395 * None (inherited from caller).
398 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
400 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
401 int speed = adev->dma_mode - XFER_MW_DMA_0;
402 int drive_pci = sis_old_port_base(adev);
405 const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
407 pci_read_config_byte(pdev, drive_pci + 1, &timing);
409 if (adev->dma_mode < XFER_UDMA_0) {
410 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
412 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
413 speed = adev->dma_mode - XFER_UDMA_0;
415 timing |= udma_bits[speed];
417 pci_write_config_byte(pdev, drive_pci + 1, timing);
421 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
422 * @ap: Port whose timings we are configuring
423 * @adev: Device to program
425 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
426 * Handles early SiS 961 bridges.
429 * None (inherited from caller).
432 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
434 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
435 int speed = adev->dma_mode - XFER_MW_DMA_0;
436 int drive_pci = sis_old_port_base(adev);
438 /* Low 4 bits are timing */
439 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
441 pci_read_config_byte(pdev, drive_pci + 1, &timing);
443 if (adev->dma_mode < XFER_UDMA_0) {
444 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
446 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
447 speed = adev->dma_mode - XFER_UDMA_0;
449 timing |= udma_bits[speed];
451 pci_write_config_byte(pdev, drive_pci + 1, timing);
455 * sis_133_set_dmamode - Initialize host controller PATA DMA timings
456 * @ap: Port whose timings we are configuring
457 * @adev: Device to program
459 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
462 * None (inherited from caller).
465 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
467 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
468 int speed = adev->dma_mode - XFER_MW_DMA_0;
473 /* bits 4- cycle time 8 - cvs time */
474 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
475 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
477 /* If bit 14 is set then the registers are mapped at 0x70 not 0x40 */
478 pci_read_config_dword(pdev, 0x54, ®54);
479 if (reg54 & 0x40000000)
481 port += (8 * ap->port_no) + (4 * adev->devno);
483 pci_read_config_dword(pdev, port, &t1);
485 if (adev->dma_mode < XFER_UDMA_0) {
487 /* FIXME: need data sheet to add MWDMA here. Also lacking on
490 speed = adev->dma_mode - XFER_UDMA_0;
491 /* if & 8 no UDMA133 - need info for ... */
495 t1 |= timing_u133[speed];
497 t1 |= timing_u100[speed];
499 pci_write_config_dword(pdev, port, t1);
502 static struct scsi_host_template sis_sht = {
503 ATA_BMDMA_SHT(DRV_NAME),
506 static struct ata_port_operations sis_133_for_sata_ops = {
507 .inherits = &ata_bmdma_port_ops,
508 .set_piomode = sis_133_set_piomode,
509 .set_dmamode = sis_133_set_dmamode,
510 .cable_detect = sis_133_cable_detect,
513 static struct ata_port_operations sis_base_ops = {
514 .inherits = &ata_bmdma_port_ops,
515 .prereset = sis_pre_reset,
518 static struct ata_port_operations sis_133_ops = {
519 .inherits = &sis_base_ops,
520 .set_piomode = sis_133_set_piomode,
521 .set_dmamode = sis_133_set_dmamode,
522 .cable_detect = sis_133_cable_detect,
525 static struct ata_port_operations sis_133_early_ops = {
526 .inherits = &sis_base_ops,
527 .set_piomode = sis_100_set_piomode,
528 .set_dmamode = sis_133_early_set_dmamode,
529 .cable_detect = sis_66_cable_detect,
532 static struct ata_port_operations sis_100_ops = {
533 .inherits = &sis_base_ops,
534 .set_piomode = sis_100_set_piomode,
535 .set_dmamode = sis_100_set_dmamode,
536 .cable_detect = sis_66_cable_detect,
539 static struct ata_port_operations sis_66_ops = {
540 .inherits = &sis_base_ops,
541 .set_piomode = sis_old_set_piomode,
542 .set_dmamode = sis_66_set_dmamode,
543 .cable_detect = sis_66_cable_detect,
546 static struct ata_port_operations sis_old_ops = {
547 .inherits = &sis_base_ops,
548 .set_piomode = sis_old_set_piomode,
549 .set_dmamode = sis_old_set_dmamode,
550 .cable_detect = ata_cable_40wire,
553 static const struct ata_port_info sis_info = {
554 .flags = ATA_FLAG_SLAVE_POSS,
555 .pio_mask = ATA_PIO4,
556 .mwdma_mask = ATA_MWDMA2,
558 .port_ops = &sis_old_ops,
560 static const struct ata_port_info sis_info33 = {
561 .flags = ATA_FLAG_SLAVE_POSS,
562 .pio_mask = ATA_PIO4,
563 .mwdma_mask = ATA_MWDMA2,
564 .udma_mask = ATA_UDMA2,
565 .port_ops = &sis_old_ops,
567 static const struct ata_port_info sis_info66 = {
568 .flags = ATA_FLAG_SLAVE_POSS,
569 .pio_mask = ATA_PIO4,
571 .udma_mask = ATA_UDMA4,
572 .port_ops = &sis_66_ops,
574 static const struct ata_port_info sis_info100 = {
575 .flags = ATA_FLAG_SLAVE_POSS,
576 .pio_mask = ATA_PIO4,
578 .udma_mask = ATA_UDMA5,
579 .port_ops = &sis_100_ops,
581 static const struct ata_port_info sis_info100_early = {
582 .flags = ATA_FLAG_SLAVE_POSS,
583 .pio_mask = ATA_PIO4,
585 .udma_mask = ATA_UDMA5,
586 .port_ops = &sis_66_ops,
588 static const struct ata_port_info sis_info133 = {
589 .flags = ATA_FLAG_SLAVE_POSS,
590 .pio_mask = ATA_PIO4,
592 .udma_mask = ATA_UDMA6,
593 .port_ops = &sis_133_ops,
595 const struct ata_port_info sis_info133_for_sata = {
596 .flags = ATA_FLAG_SLAVE_POSS,
597 .pio_mask = ATA_PIO4,
599 .udma_mask = ATA_UDMA6,
600 .port_ops = &sis_133_for_sata_ops,
602 static const struct ata_port_info sis_info133_early = {
603 .flags = ATA_FLAG_SLAVE_POSS,
604 .pio_mask = ATA_PIO4,
606 .udma_mask = ATA_UDMA6,
607 .port_ops = &sis_133_early_ops,
610 /* Privately shared with the SiS180 SATA driver, not for use elsewhere */
611 EXPORT_SYMBOL_GPL(sis_info133_for_sata);
613 static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
618 if (sis->info == &sis_info133) {
619 pci_read_config_word(pdev, 0x50, ®w);
621 pci_write_config_word(pdev, 0x50, regw & ~0x08);
622 pci_read_config_word(pdev, 0x52, ®w);
624 pci_write_config_word(pdev, 0x52, regw & ~0x08);
628 if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
630 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
631 /* Set compatibility bit */
632 pci_read_config_byte(pdev, 0x49, ®);
634 pci_write_config_byte(pdev, 0x49, reg | 0x01);
638 if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
640 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
641 /* Set compatibility bit */
642 pci_read_config_byte(pdev, 0x52, ®);
644 pci_write_config_byte(pdev, 0x52, reg | 0x04);
648 if (sis->info == &sis_info33) {
649 pci_read_config_byte(pdev, PCI_CLASS_PROG, ®);
650 if (( reg & 0x0F ) != 0x00)
651 pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
652 /* Fall through to ATA16 fixup below */
655 if (sis->info == &sis_info || sis->info == &sis_info33) {
656 /* force per drive recovery and active timings
657 needed on ATA_33 and below chips */
658 pci_read_config_byte(pdev, 0x52, ®);
660 pci_write_config_byte(pdev, 0x52, reg|0x08);
668 * sis_init_one - Register SiS ATA PCI device with kernel services
669 * @pdev: PCI device to register
670 * @ent: Entry in sis_pci_tbl matching with @pdev
672 * Called from kernel PCI layer. We probe for combined mode (sigh),
673 * and then hand over control to libata, for it to do the rest.
676 * Inherited from PCI layer (may sleep).
679 * Zero on success, or -ERRNO value.
682 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
684 static int printed_version;
685 const struct ata_port_info *ppi[] = { NULL, NULL };
686 struct pci_dev *host = NULL;
687 struct sis_chipset *chipset = NULL;
688 struct sis_chipset *sets;
691 static struct sis_chipset sis_chipsets[] = {
693 { 0x0968, &sis_info133 },
694 { 0x0966, &sis_info133 },
695 { 0x0965, &sis_info133 },
696 { 0x0745, &sis_info100 },
697 { 0x0735, &sis_info100 },
698 { 0x0733, &sis_info100 },
699 { 0x0635, &sis_info100 },
700 { 0x0633, &sis_info100 },
702 { 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
703 { 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
705 { 0x0640, &sis_info66 },
706 { 0x0630, &sis_info66 },
707 { 0x0620, &sis_info66 },
708 { 0x0540, &sis_info66 },
709 { 0x0530, &sis_info66 },
711 { 0x5600, &sis_info33 },
712 { 0x5598, &sis_info33 },
713 { 0x5597, &sis_info33 },
714 { 0x5591, &sis_info33 },
715 { 0x5582, &sis_info33 },
716 { 0x5581, &sis_info33 },
718 { 0x5596, &sis_info },
719 { 0x5571, &sis_info },
720 { 0x5517, &sis_info },
721 { 0x5511, &sis_info },
725 static struct sis_chipset sis133_early = {
726 0x0, &sis_info133_early
728 static struct sis_chipset sis133 = {
731 static struct sis_chipset sis100_early = {
732 0x0, &sis_info100_early
734 static struct sis_chipset sis100 = {
738 if (!printed_version++)
739 dev_printk(KERN_DEBUG, &pdev->dev,
740 "version " DRV_VERSION "\n");
742 rc = pcim_enable_device(pdev);
746 /* We have to find the bridge first */
747 for (sets = &sis_chipsets[0]; sets->device; sets++) {
748 host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);
750 chipset = sets; /* Match found */
751 if (sets->device == 0x630) { /* SIS630 */
752 if (host->revision >= 0x30) /* 630 ET */
753 chipset = &sis100_early;
759 /* Look for concealed bridges */
760 if (chipset == NULL) {
765 /* Disable ID masking and register remapping then
766 see what the real ID is */
768 pci_read_config_dword(pdev, 0x54, &idemisc);
769 pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
770 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
771 pci_write_config_dword(pdev, 0x54, idemisc);
774 case 0x5518: /* SIS 962/963 */
776 if ((idemisc & 0x40000000) == 0) {
777 pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
778 printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
781 case 0x0180: /* SIS 965/965L */
784 case 0x1180: /* SIS 966/966L */
791 if (chipset == NULL) {
792 struct pci_dev *lpc_bridge;
797 /* Try the second unmasking technique */
798 pci_read_config_byte(pdev, 0x4a, &idecfg);
799 pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
800 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
801 pci_write_config_byte(pdev, 0x4a, idecfg);
805 lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
806 if (lpc_bridge == NULL)
808 pci_read_config_byte(pdev, 0x49, &prefctl);
809 pci_dev_put(lpc_bridge);
811 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
812 chipset = &sis133_early;
821 /* No chipset info, no support */
825 ppi[0] = chipset->info;
827 sis_fixup(pdev, chipset);
829 return ata_pci_bmdma_init_one(pdev, ppi, &sis_sht, chipset, 0);
833 static int sis_reinit_one(struct pci_dev *pdev)
835 struct ata_host *host = dev_get_drvdata(&pdev->dev);
838 rc = ata_pci_device_do_resume(pdev);
842 sis_fixup(pdev, host->private_data);
844 ata_host_resume(host);
849 static const struct pci_device_id sis_pci_tbl[] = {
850 { PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
851 { PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
852 { PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */
857 static struct pci_driver sis_pci_driver = {
859 .id_table = sis_pci_tbl,
860 .probe = sis_init_one,
861 .remove = ata_pci_remove_one,
863 .suspend = ata_pci_device_suspend,
864 .resume = sis_reinit_one,
868 static int __init sis_init(void)
870 return pci_register_driver(&sis_pci_driver);
873 static void __exit sis_exit(void)
875 pci_unregister_driver(&sis_pci_driver);
878 module_init(sis_init);
879 module_exit(sis_exit);
881 MODULE_AUTHOR("Alan Cox");
882 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
883 MODULE_LICENSE("GPL");
884 MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
885 MODULE_VERSION(DRV_VERSION);