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_port_base - return PCI configuration base for dev
95 * Returns the base of the PCI configuration registers for this port
99 static int sis_port_base(struct ata_device *adev)
101 struct ata_port *ap = adev->link->ap;
102 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
106 /* If bit 30 is set then the registers are mapped at 0x70 not 0x40 */
107 pci_read_config_dword(pdev, 0x54, ®54);
108 if (reg54 & 0x40000000)
111 return port + (8 * ap->port_no) + (4 * adev->devno);
115 * sis_133_cable_detect - check for 40/80 pin
117 * @deadline: deadline jiffies for the operation
119 * Perform cable detection for the later UDMA133 capable
123 static int sis_133_cable_detect(struct ata_port *ap)
125 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
128 /* The top bit of this register is the cable detect bit */
129 pci_read_config_word(pdev, 0x50 + 2 * ap->port_no, &tmp);
130 if ((tmp & 0x8000) && !sis_short_ata40(pdev))
131 return ATA_CBL_PATA40;
132 return ATA_CBL_PATA80;
136 * sis_66_cable_detect - check for 40/80 pin
139 * Perform cable detection on the UDMA66, UDMA100 and early UDMA133
140 * SiS IDE controllers.
143 static int sis_66_cable_detect(struct ata_port *ap)
145 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
148 /* Older chips keep cable detect in bits 4/5 of reg 0x48 */
149 pci_read_config_byte(pdev, 0x48, &tmp);
151 if ((tmp & 0x10) && !sis_short_ata40(pdev))
152 return ATA_CBL_PATA40;
153 return ATA_CBL_PATA80;
158 * sis_pre_reset - probe begin
160 * @deadline: deadline jiffies for the operation
162 * Set up cable type and use generic probe init
165 static int sis_pre_reset(struct ata_link *link, unsigned long deadline)
167 static const struct pci_bits sis_enable_bits[] = {
168 { 0x4aU, 1U, 0x02UL, 0x02UL }, /* port 0 */
169 { 0x4aU, 1U, 0x04UL, 0x04UL }, /* port 1 */
172 struct ata_port *ap = link->ap;
173 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
175 if (!pci_test_config_bits(pdev, &sis_enable_bits[ap->port_no]))
178 /* Clear the FIFO settings. We can't enable the FIFO until
179 we know we are poking at a disk */
180 pci_write_config_byte(pdev, 0x4B, 0);
181 return ata_sff_prereset(link, deadline);
186 * sis_set_fifo - Set RWP fifo bits for this device
190 * SIS chipsets implement prefetch/postwrite bits for each device
191 * on both channels. This functionality is not ATAPI compatible and
192 * must be configured according to the class of device present
195 static void sis_set_fifo(struct ata_port *ap, struct ata_device *adev)
197 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
201 mask <<= (2 * ap->port_no);
202 mask <<= adev->devno;
204 /* This holds various bits including the FIFO control */
205 pci_read_config_byte(pdev, 0x4B, &fifoctrl);
208 /* Enable for ATA (disk) only */
209 if (adev->class == ATA_DEV_ATA)
211 pci_write_config_byte(pdev, 0x4B, fifoctrl);
215 * sis_old_set_piomode - Initialize host controller PATA PIO timings
216 * @ap: Port whose timings we are configuring
217 * @adev: Device we are configuring for.
219 * Set PIO mode for device, in host controller PCI config space. This
220 * function handles PIO set up for all chips that are pre ATA100 and
221 * also early ATA100 devices.
224 * None (inherited from caller).
227 static void sis_old_set_piomode (struct ata_port *ap, struct ata_device *adev)
229 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
230 int port = sis_old_port_base(adev);
232 int speed = adev->pio_mode - XFER_PIO_0;
234 static const u8 active[] = { 0x00, 0x07, 0x04, 0x03, 0x01 };
235 static const u8 recovery[] = { 0x00, 0x06, 0x04, 0x03, 0x03 };
237 sis_set_fifo(ap, adev);
239 pci_read_config_byte(pdev, port, &t1);
240 pci_read_config_byte(pdev, port + 1, &t2);
242 t1 &= ~0x0F; /* Clear active/recovery timings */
246 t2 |= recovery[speed];
248 pci_write_config_byte(pdev, port, t1);
249 pci_write_config_byte(pdev, port + 1, t2);
253 * sis_100_set_piomode - Initialize host controller PATA PIO timings
254 * @ap: Port whose timings we are configuring
255 * @adev: Device we are configuring for.
257 * Set PIO mode for device, in host controller PCI config space. This
258 * function handles PIO set up for ATA100 devices and early ATA133.
261 * None (inherited from caller).
264 static void sis_100_set_piomode (struct ata_port *ap, struct ata_device *adev)
266 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
267 int port = sis_old_port_base(adev);
268 int speed = adev->pio_mode - XFER_PIO_0;
270 static const u8 actrec[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
272 sis_set_fifo(ap, adev);
274 pci_write_config_byte(pdev, port, actrec[speed]);
278 * sis_133_set_piomode - Initialize host controller PATA PIO timings
279 * @ap: Port whose timings we are configuring
280 * @adev: Device we are configuring for.
282 * Set PIO mode for device, in host controller PCI config space. This
283 * function handles PIO set up for the later ATA133 devices.
286 * None (inherited from caller).
289 static void sis_133_set_piomode (struct ata_port *ap, struct ata_device *adev)
291 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
294 int speed = adev->pio_mode - XFER_PIO_0;
296 static const u32 timing133[] = {
297 0x28269000, /* Recovery << 24 | Act << 16 | Ini << 12 */
303 static const u32 timing100[] = {
304 0x1E1C6000, /* Recovery << 24 | Act << 16 | Ini << 12 */
311 sis_set_fifo(ap, adev);
313 port = sis_port_base(adev);
314 pci_read_config_dword(pdev, port, &t1);
315 t1 &= 0xC0C00FFF; /* Mask out timing */
317 if (t1 & 0x08) /* 100 or 133 ? */
318 t1 |= timing133[speed];
320 t1 |= timing100[speed];
321 pci_write_config_byte(pdev, port, t1);
325 * sis_old_set_dmamode - Initialize host controller PATA DMA timings
326 * @ap: Port whose timings we are configuring
327 * @adev: Device to program
329 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
330 * Handles pre UDMA and UDMA33 devices. Supports MWDMA as well unlike
331 * the old ide/pci driver.
334 * None (inherited from caller).
337 static void sis_old_set_dmamode (struct ata_port *ap, struct ata_device *adev)
339 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
340 int speed = adev->dma_mode - XFER_MW_DMA_0;
341 int drive_pci = sis_old_port_base(adev);
344 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
345 static const u16 udma_bits[] = { 0xE000, 0xC000, 0xA000 };
347 pci_read_config_word(pdev, drive_pci, &timing);
349 if (adev->dma_mode < XFER_UDMA_0) {
350 /* bits 3-0 hold recovery timing bits 8-10 active timing and
351 the higher bits are dependent on the device */
353 timing |= mwdma_bits[speed];
355 /* Bit 15 is UDMA on/off, bit 13-14 are cycle time */
356 speed = adev->dma_mode - XFER_UDMA_0;
358 timing |= udma_bits[speed];
360 pci_write_config_word(pdev, drive_pci, timing);
364 * sis_66_set_dmamode - Initialize host controller PATA DMA timings
365 * @ap: Port whose timings we are configuring
366 * @adev: Device to program
368 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
369 * Handles UDMA66 and early UDMA100 devices. Supports MWDMA as well unlike
370 * the old ide/pci driver.
373 * None (inherited from caller).
376 static void sis_66_set_dmamode (struct ata_port *ap, struct ata_device *adev)
378 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
379 int speed = adev->dma_mode - XFER_MW_DMA_0;
380 int drive_pci = sis_old_port_base(adev);
383 /* MWDMA 0-2 and UDMA 0-5 */
384 static const u16 mwdma_bits[] = { 0x008, 0x302, 0x301 };
385 static const u16 udma_bits[] = { 0xF000, 0xD000, 0xB000, 0xA000, 0x9000, 0x8000 };
387 pci_read_config_word(pdev, drive_pci, &timing);
389 if (adev->dma_mode < XFER_UDMA_0) {
390 /* bits 3-0 hold recovery timing bits 8-10 active timing and
391 the higher bits are dependent on the device, bit 15 udma */
393 timing |= mwdma_bits[speed];
395 /* Bit 15 is UDMA on/off, bit 12-14 are cycle time */
396 speed = adev->dma_mode - XFER_UDMA_0;
398 timing |= udma_bits[speed];
400 pci_write_config_word(pdev, drive_pci, timing);
404 * sis_100_set_dmamode - Initialize host controller PATA DMA timings
405 * @ap: Port whose timings we are configuring
406 * @adev: Device to program
408 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
409 * Handles UDMA66 and early UDMA100 devices.
412 * None (inherited from caller).
415 static void sis_100_set_dmamode (struct ata_port *ap, struct ata_device *adev)
417 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
418 int speed = adev->dma_mode - XFER_MW_DMA_0;
419 int drive_pci = sis_old_port_base(adev);
422 static const u8 udma_bits[] = { 0x8B, 0x87, 0x85, 0x83, 0x82, 0x81};
424 pci_read_config_byte(pdev, drive_pci + 1, &timing);
426 if (adev->dma_mode < XFER_UDMA_0) {
427 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
429 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
430 speed = adev->dma_mode - XFER_UDMA_0;
432 timing |= udma_bits[speed];
434 pci_write_config_byte(pdev, drive_pci + 1, timing);
438 * sis_133_early_set_dmamode - Initialize host controller PATA DMA timings
439 * @ap: Port whose timings we are configuring
440 * @adev: Device to program
442 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
443 * Handles early SiS 961 bridges.
446 * None (inherited from caller).
449 static void sis_133_early_set_dmamode (struct ata_port *ap, struct ata_device *adev)
451 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
452 int speed = adev->dma_mode - XFER_MW_DMA_0;
453 int drive_pci = sis_old_port_base(adev);
455 /* Low 4 bits are timing */
456 static const u8 udma_bits[] = { 0x8F, 0x8A, 0x87, 0x85, 0x83, 0x82, 0x81};
458 pci_read_config_byte(pdev, drive_pci + 1, &timing);
460 if (adev->dma_mode < XFER_UDMA_0) {
461 /* NOT SUPPORTED YET: NEED DATA SHEET. DITTO IN OLD DRIVER */
463 /* Bit 7 is UDMA on/off, bit 0-3 are cycle time */
464 speed = adev->dma_mode - XFER_UDMA_0;
466 timing |= udma_bits[speed];
468 pci_write_config_byte(pdev, drive_pci + 1, timing);
472 * sis_133_set_dmamode - Initialize host controller PATA DMA timings
473 * @ap: Port whose timings we are configuring
474 * @adev: Device to program
476 * Set UDMA/MWDMA mode for device, in host controller PCI config space.
479 * None (inherited from caller).
482 static void sis_133_set_dmamode (struct ata_port *ap, struct ata_device *adev)
484 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
488 port = sis_port_base(adev);
489 pci_read_config_dword(pdev, port, &t1);
491 if (adev->dma_mode < XFER_UDMA_0) {
492 /* Recovery << 24 | Act << 16 | Ini << 12, like PIO modes */
493 static const u32 timing_u100[] = { 0x19154000, 0x06072000, 0x04062000 };
494 static const u32 timing_u133[] = { 0x221C6000, 0x0C0A3000, 0x05093000 };
495 int speed = adev->dma_mode - XFER_MW_DMA_0;
501 t1 |= timing_u133[speed];
503 t1 |= timing_u100[speed];
505 /* bits 4- cycle time 8 - cvs time */
506 static const u32 timing_u100[] = { 0x6B0, 0x470, 0x350, 0x140, 0x120, 0x110, 0x000 };
507 static const u32 timing_u133[] = { 0x9F0, 0x6A0, 0x470, 0x250, 0x230, 0x220, 0x210 };
508 int speed = adev->dma_mode - XFER_UDMA_0;
514 t1 |= timing_u133[speed];
516 t1 |= timing_u100[speed];
518 pci_write_config_dword(pdev, port, t1);
522 * sis_133_mode_filter - mode selection filter
525 * Block UDMA6 on devices that do not support it.
528 static unsigned long sis_133_mode_filter(struct ata_device *adev, unsigned long mask)
530 struct ata_port *ap = adev->link->ap;
531 struct pci_dev *pdev = to_pci_dev(ap->host->dev);
532 int port = sis_port_base(adev);
535 pci_read_config_dword(pdev, port, &t1);
536 /* if ATA133 is disabled, mask it out */
538 mask &= ~(0xC0 << ATA_SHIFT_UDMA);
542 static struct scsi_host_template sis_sht = {
543 ATA_BMDMA_SHT(DRV_NAME),
546 static struct ata_port_operations sis_133_for_sata_ops = {
547 .inherits = &ata_bmdma_port_ops,
548 .set_piomode = sis_133_set_piomode,
549 .set_dmamode = sis_133_set_dmamode,
550 .cable_detect = sis_133_cable_detect,
553 static struct ata_port_operations sis_base_ops = {
554 .inherits = &ata_bmdma_port_ops,
555 .prereset = sis_pre_reset,
558 static struct ata_port_operations sis_133_ops = {
559 .inherits = &sis_base_ops,
560 .set_piomode = sis_133_set_piomode,
561 .set_dmamode = sis_133_set_dmamode,
562 .cable_detect = sis_133_cable_detect,
563 .mode_filter = sis_133_mode_filter,
566 static struct ata_port_operations sis_133_early_ops = {
567 .inherits = &sis_base_ops,
568 .set_piomode = sis_100_set_piomode,
569 .set_dmamode = sis_133_early_set_dmamode,
570 .cable_detect = sis_66_cable_detect,
573 static struct ata_port_operations sis_100_ops = {
574 .inherits = &sis_base_ops,
575 .set_piomode = sis_100_set_piomode,
576 .set_dmamode = sis_100_set_dmamode,
577 .cable_detect = sis_66_cable_detect,
580 static struct ata_port_operations sis_66_ops = {
581 .inherits = &sis_base_ops,
582 .set_piomode = sis_old_set_piomode,
583 .set_dmamode = sis_66_set_dmamode,
584 .cable_detect = sis_66_cable_detect,
587 static struct ata_port_operations sis_old_ops = {
588 .inherits = &sis_base_ops,
589 .set_piomode = sis_old_set_piomode,
590 .set_dmamode = sis_old_set_dmamode,
591 .cable_detect = ata_cable_40wire,
594 static const struct ata_port_info sis_info = {
595 .flags = ATA_FLAG_SLAVE_POSS,
596 .pio_mask = ATA_PIO4,
597 .mwdma_mask = ATA_MWDMA2,
599 .port_ops = &sis_old_ops,
601 static const struct ata_port_info sis_info33 = {
602 .flags = ATA_FLAG_SLAVE_POSS,
603 .pio_mask = ATA_PIO4,
604 .mwdma_mask = ATA_MWDMA2,
605 .udma_mask = ATA_UDMA2,
606 .port_ops = &sis_old_ops,
608 static const struct ata_port_info sis_info66 = {
609 .flags = ATA_FLAG_SLAVE_POSS,
610 .pio_mask = ATA_PIO4,
612 .udma_mask = ATA_UDMA4,
613 .port_ops = &sis_66_ops,
615 static const struct ata_port_info sis_info100 = {
616 .flags = ATA_FLAG_SLAVE_POSS,
617 .pio_mask = ATA_PIO4,
619 .udma_mask = ATA_UDMA5,
620 .port_ops = &sis_100_ops,
622 static const struct ata_port_info sis_info100_early = {
623 .flags = ATA_FLAG_SLAVE_POSS,
624 .pio_mask = ATA_PIO4,
626 .udma_mask = ATA_UDMA5,
627 .port_ops = &sis_66_ops,
629 static const struct ata_port_info sis_info133 = {
630 .flags = ATA_FLAG_SLAVE_POSS,
631 .pio_mask = ATA_PIO4,
632 .mwdma_mask = ATA_MWDMA2,
633 .udma_mask = ATA_UDMA6,
634 .port_ops = &sis_133_ops,
636 const struct ata_port_info sis_info133_for_sata = {
637 .flags = ATA_FLAG_SLAVE_POSS,
638 .pio_mask = ATA_PIO4,
640 .udma_mask = ATA_UDMA6,
641 .port_ops = &sis_133_for_sata_ops,
643 static const struct ata_port_info sis_info133_early = {
644 .flags = ATA_FLAG_SLAVE_POSS,
645 .pio_mask = ATA_PIO4,
647 .udma_mask = ATA_UDMA6,
648 .port_ops = &sis_133_early_ops,
651 /* Privately shared with the SiS180 SATA driver, not for use elsewhere */
652 EXPORT_SYMBOL_GPL(sis_info133_for_sata);
654 static void sis_fixup(struct pci_dev *pdev, struct sis_chipset *sis)
659 if (sis->info == &sis_info133) {
660 pci_read_config_word(pdev, 0x50, ®w);
662 pci_write_config_word(pdev, 0x50, regw & ~0x08);
663 pci_read_config_word(pdev, 0x52, ®w);
665 pci_write_config_word(pdev, 0x52, regw & ~0x08);
669 if (sis->info == &sis_info133_early || sis->info == &sis_info100) {
671 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
672 /* Set compatibility bit */
673 pci_read_config_byte(pdev, 0x49, ®);
675 pci_write_config_byte(pdev, 0x49, reg | 0x01);
679 if (sis->info == &sis_info66 || sis->info == &sis_info100_early) {
681 pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 0x80);
682 /* Set compatibility bit */
683 pci_read_config_byte(pdev, 0x52, ®);
685 pci_write_config_byte(pdev, 0x52, reg | 0x04);
689 if (sis->info == &sis_info33) {
690 pci_read_config_byte(pdev, PCI_CLASS_PROG, ®);
691 if (( reg & 0x0F ) != 0x00)
692 pci_write_config_byte(pdev, PCI_CLASS_PROG, reg & 0xF0);
693 /* Fall through to ATA16 fixup below */
696 if (sis->info == &sis_info || sis->info == &sis_info33) {
697 /* force per drive recovery and active timings
698 needed on ATA_33 and below chips */
699 pci_read_config_byte(pdev, 0x52, ®);
701 pci_write_config_byte(pdev, 0x52, reg|0x08);
709 * sis_init_one - Register SiS ATA PCI device with kernel services
710 * @pdev: PCI device to register
711 * @ent: Entry in sis_pci_tbl matching with @pdev
713 * Called from kernel PCI layer. We probe for combined mode (sigh),
714 * and then hand over control to libata, for it to do the rest.
717 * Inherited from PCI layer (may sleep).
720 * Zero on success, or -ERRNO value.
723 static int sis_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
725 const struct ata_port_info *ppi[] = { NULL, NULL };
726 struct pci_dev *host = NULL;
727 struct sis_chipset *chipset = NULL;
728 struct sis_chipset *sets;
731 static struct sis_chipset sis_chipsets[] = {
733 { 0x0968, &sis_info133 },
734 { 0x0966, &sis_info133 },
735 { 0x0965, &sis_info133 },
736 { 0x0745, &sis_info100 },
737 { 0x0735, &sis_info100 },
738 { 0x0733, &sis_info100 },
739 { 0x0635, &sis_info100 },
740 { 0x0633, &sis_info100 },
742 { 0x0730, &sis_info100_early }, /* 100 with ATA 66 layout */
743 { 0x0550, &sis_info100_early }, /* 100 with ATA 66 layout */
745 { 0x0640, &sis_info66 },
746 { 0x0630, &sis_info66 },
747 { 0x0620, &sis_info66 },
748 { 0x0540, &sis_info66 },
749 { 0x0530, &sis_info66 },
751 { 0x5600, &sis_info33 },
752 { 0x5598, &sis_info33 },
753 { 0x5597, &sis_info33 },
754 { 0x5591, &sis_info33 },
755 { 0x5582, &sis_info33 },
756 { 0x5581, &sis_info33 },
758 { 0x5596, &sis_info },
759 { 0x5571, &sis_info },
760 { 0x5517, &sis_info },
761 { 0x5511, &sis_info },
765 static struct sis_chipset sis133_early = {
766 0x0, &sis_info133_early
768 static struct sis_chipset sis133 = {
771 static struct sis_chipset sis100_early = {
772 0x0, &sis_info100_early
774 static struct sis_chipset sis100 = {
778 ata_print_version_once(&pdev->dev, DRV_VERSION);
780 rc = pcim_enable_device(pdev);
784 /* We have to find the bridge first */
785 for (sets = &sis_chipsets[0]; sets->device; sets++) {
786 host = pci_get_device(PCI_VENDOR_ID_SI, sets->device, NULL);
788 chipset = sets; /* Match found */
789 if (sets->device == 0x630) { /* SIS630 */
790 if (host->revision >= 0x30) /* 630 ET */
791 chipset = &sis100_early;
797 /* Look for concealed bridges */
798 if (chipset == NULL) {
803 /* Disable ID masking and register remapping then
804 see what the real ID is */
806 pci_read_config_dword(pdev, 0x54, &idemisc);
807 pci_write_config_dword(pdev, 0x54, idemisc & 0x7fffffff);
808 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
809 pci_write_config_dword(pdev, 0x54, idemisc);
812 case 0x5518: /* SIS 962/963 */
814 "SiS 962/963 MuTIOL IDE UDMA133 controller\n");
816 if ((idemisc & 0x40000000) == 0) {
817 pci_write_config_dword(pdev, 0x54, idemisc | 0x40000000);
819 "Switching to 5513 register mapping\n");
822 case 0x0180: /* SIS 965/965L */
825 case 0x1180: /* SIS 966/966L */
832 if (chipset == NULL) {
833 struct pci_dev *lpc_bridge;
838 /* Try the second unmasking technique */
839 pci_read_config_byte(pdev, 0x4a, &idecfg);
840 pci_write_config_byte(pdev, 0x4a, idecfg | 0x10);
841 pci_read_config_word(pdev, PCI_DEVICE_ID, &trueid);
842 pci_write_config_byte(pdev, 0x4a, idecfg);
846 lpc_bridge = pci_get_slot(pdev->bus, 0x10); /* Bus 0 Dev 2 Fn 0 */
847 if (lpc_bridge == NULL)
849 pci_read_config_byte(pdev, 0x49, &prefctl);
850 pci_dev_put(lpc_bridge);
852 if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
853 chipset = &sis133_early;
862 /* No chipset info, no support */
866 ppi[0] = chipset->info;
868 sis_fixup(pdev, chipset);
870 return ata_pci_bmdma_init_one(pdev, ppi, &sis_sht, chipset, 0);
874 static int sis_reinit_one(struct pci_dev *pdev)
876 struct ata_host *host = pci_get_drvdata(pdev);
879 rc = ata_pci_device_do_resume(pdev);
883 sis_fixup(pdev, host->private_data);
885 ata_host_resume(host);
890 static const struct pci_device_id sis_pci_tbl[] = {
891 { PCI_VDEVICE(SI, 0x5513), }, /* SiS 5513 */
892 { PCI_VDEVICE(SI, 0x5518), }, /* SiS 5518 */
893 { PCI_VDEVICE(SI, 0x1180), }, /* SiS 1180 */
898 static struct pci_driver sis_pci_driver = {
900 .id_table = sis_pci_tbl,
901 .probe = sis_init_one,
902 .remove = ata_pci_remove_one,
904 .suspend = ata_pci_device_suspend,
905 .resume = sis_reinit_one,
909 module_pci_driver(sis_pci_driver);
911 MODULE_AUTHOR("Alan Cox");
912 MODULE_DESCRIPTION("SCSI low-level driver for SiS ATA");
913 MODULE_LICENSE("GPL");
914 MODULE_DEVICE_TABLE(pci, sis_pci_tbl);
915 MODULE_VERSION(DRV_VERSION);