[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / ide / pci / sis5513.c

/*
 * linux/drivers/ide/pci/sis5513.c	Version 0.31	Aug 9, 2007
 *
 * Copyright (C) 1999-2000	Andre Hedrick <andre@linux-ide.org>
 * Copyright (C) 2002		Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
 * Copyright (C) 2003		Vojtech Pavlik <vojtech@suse.cz>
 * Copyright (C) 2007		Bartlomiej Zolnierkiewicz
 *
 * May be copied or modified under the terms of the GNU General Public License
 *
 *
 * Thanks :
 *
 * SiS Taiwan		: for direct support and hardware.
 * Daniela Engert	: for initial ATA100 advices and numerous others.
 * John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt	:
 *			  for checking code correctness, providing patches.
 *
 *
 * Original tests and design on the SiS620 chipset.
 * ATA100 tests and design on the SiS735 chipset.
 * ATA16/33 support from specs
 * ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
 * ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
 *
 * Documentation:
 *	SiS chipset documentation available under NDA to companies only
 *      (not to individuals).
 */

/*
 * The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
 * SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
 * or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
 *
 * Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
 * starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
 * can figure out that we have a more modern and more capable 5513 by looking
 * for the respective NorthBridge IDs.
 *
 * Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
 * into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
 * ID, while the now ATA-133 capable 5513 still has the same PCI ID.
 * Fortunately the 5513 can be 'unmasked' by fiddling with some config space
 * bits, changing its device id to the true one - 5517 for 961 and 5518 for
 * 962/963.
 */

#include <linux/types.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/delay.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/ioport.h>
#include <linux/blkdev.h>
#include <linux/hdreg.h>

#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/ide.h>

#include <asm/irq.h>

#include "ide-timing.h"

/* registers layout and init values are chipset family dependant */

#define ATA_16		0x01
#define ATA_33		0x02
#define ATA_66		0x03
#define ATA_100a	0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
#define ATA_100		0x05
#define ATA_133a	0x06 // SiS961b with 133 support
#define ATA_133		0x07 // SiS962/963

static u8 chipset_family;

/*
 * Devices supported
 */
static const struct {
	const char *name;
	u16 host_id;
	u8 chipset_family;
	u8 flags;
} SiSHostChipInfo[] = {
	{ "SiS968",	PCI_DEVICE_ID_SI_968,	ATA_133  },
	{ "SiS966",	PCI_DEVICE_ID_SI_966,	ATA_133  },
	{ "SiS965",	PCI_DEVICE_ID_SI_965,	ATA_133  },
	{ "SiS745",	PCI_DEVICE_ID_SI_745,	ATA_100  },
	{ "SiS735",	PCI_DEVICE_ID_SI_735,	ATA_100  },
	{ "SiS733",	PCI_DEVICE_ID_SI_733,	ATA_100  },
	{ "SiS635",	PCI_DEVICE_ID_SI_635,	ATA_100  },
	{ "SiS633",	PCI_DEVICE_ID_SI_633,	ATA_100  },

	{ "SiS730",	PCI_DEVICE_ID_SI_730,	ATA_100a },
	{ "SiS550",	PCI_DEVICE_ID_SI_550,	ATA_100a },

	{ "SiS640",	PCI_DEVICE_ID_SI_640,	ATA_66   },
	{ "SiS630",	PCI_DEVICE_ID_SI_630,	ATA_66   },
	{ "SiS620",	PCI_DEVICE_ID_SI_620,	ATA_66   },
	{ "SiS540",	PCI_DEVICE_ID_SI_540,	ATA_66   },
	{ "SiS530",	PCI_DEVICE_ID_SI_530,	ATA_66   },

	{ "SiS5600",	PCI_DEVICE_ID_SI_5600,	ATA_33   },
	{ "SiS5598",	PCI_DEVICE_ID_SI_5598,	ATA_33   },
	{ "SiS5597",	PCI_DEVICE_ID_SI_5597,	ATA_33   },
	{ "SiS5591/2",	PCI_DEVICE_ID_SI_5591,	ATA_33   },
	{ "SiS5582",	PCI_DEVICE_ID_SI_5582,	ATA_33   },
	{ "SiS5581",	PCI_DEVICE_ID_SI_5581,	ATA_33   },

	{ "SiS5596",	PCI_DEVICE_ID_SI_5596,	ATA_16   },
	{ "SiS5571",	PCI_DEVICE_ID_SI_5571,	ATA_16   },
	{ "SiS5517",	PCI_DEVICE_ID_SI_5517,	ATA_16   },
	{ "SiS551x",	PCI_DEVICE_ID_SI_5511,	ATA_16   },
};

/* Cycle time bits and values vary across chip dma capabilities
   These three arrays hold the register layout and the values to set.
   Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */

/* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
	{0,0,0,0,0,0,0}, /* no udma */
	{0,0,0,0,0,0,0}, /* no udma */
	{3,2,1,0,0,0,0}, /* ATA_33 */
	{7,5,3,2,1,0,0}, /* ATA_66 */
	{7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
	{11,7,5,4,2,1,0}, /* ATA_100 */
	{15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
	{15,10,7,5,3,2,1}, /* ATA_133 */
};
/* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
   See SiS962 data sheet for more detail */
static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
	{0,0,0,0,0,0,0}, /* no udma */
	{0,0,0,0,0,0,0}, /* no udma */
	{2,1,1,0,0,0,0},
	{4,3,2,1,0,0,0},
	{4,3,2,1,0,0,0},
	{6,4,3,1,1,1,0},
	{9,6,4,2,2,2,2},
	{9,6,4,2,2,2,2},
};
/* Initialize time, Active time, Recovery time vary across
   IDE clock settings. These 3 arrays hold the register value
   for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
static u8 ini_time_value[][8] = {
	{0,0,0,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
	{2,1,0,0,0,1,0,0},
	{4,3,1,1,1,3,1,1},
	{4,3,1,1,1,3,1,1},
	{6,4,2,2,2,4,2,2},
	{9,6,3,3,3,6,3,3},
	{9,6,3,3,3,6,3,3},
};
static u8 act_time_value[][8] = {
	{0,0,0,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
	{9,9,9,2,2,7,2,2},
	{19,19,19,5,4,14,5,4},
	{19,19,19,5,4,14,5,4},
	{28,28,28,7,6,21,7,6},
	{38,38,38,10,9,28,10,9},
	{38,38,38,10,9,28,10,9},
};
static u8 rco_time_value[][8] = {
	{0,0,0,0,0,0,0,0},
	{0,0,0,0,0,0,0,0},
	{9,2,0,2,0,7,1,1},
	{19,5,1,5,2,16,3,2},
	{19,5,1,5,2,16,3,2},
	{30,9,3,9,4,25,6,4},
	{40,12,4,12,5,34,12,5},
	{40,12,4,12,5,34,12,5},
};

/*
 * Printing configuration
 */
/* Used for chipset type printing at boot time */
static char* chipset_capability[] = {
	"ATA", "ATA 16",
	"ATA 33", "ATA 66",
	"ATA 100 (1st gen)", "ATA 100 (2nd gen)",
	"ATA 133 (1st gen)", "ATA 133 (2nd gen)"
};

/*
 * Configuration functions
 */

static u8 sis_ata133_get_base(ide_drive_t *drive)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u32 reg54 = 0;

	pci_read_config_dword(dev, 0x54, &reg54);

	return ((reg54 & 0x40000000) ? 0x70 : 0x40) + drive->dn * 4;
}

static void sis_ata16_program_timings(ide_drive_t *drive, const u8 mode)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u16 t1 = 0;
	u8 drive_pci = 0x40 + drive->dn * 2;

	const u16 pio_timings[]   = { 0x000, 0x607, 0x404, 0x303, 0x301 };
	const u16 mwdma_timings[] = { 0x008, 0x302, 0x301 };

	pci_read_config_word(dev, drive_pci, &t1);

	/* clear active/recovery timings */
	t1 &= ~0x070f;
	if (mode >= XFER_MW_DMA_0) {
		if (chipset_family > ATA_16)
			t1 &= ~0x8000;	/* disable UDMA */
		t1 |= mwdma_timings[mode - XFER_MW_DMA_0];
	} else
		t1 |= pio_timings[mode - XFER_PIO_0];

	pci_write_config_word(dev, drive_pci, t1);
}

static void sis_ata100_program_timings(ide_drive_t *drive, const u8 mode)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u8 t1, drive_pci = 0x40 + drive->dn * 2;

	/* timing bits: 7:4 active 3:0 recovery */
	const u8 pio_timings[]   = { 0x00, 0x67, 0x44, 0x33, 0x31 };
	const u8 mwdma_timings[] = { 0x08, 0x32, 0x31 };

	if (mode >= XFER_MW_DMA_0) {
		u8 t2 = 0;

		pci_read_config_byte(dev, drive_pci, &t2);
		t2 &= ~0x80;	/* disable UDMA */
		pci_write_config_byte(dev, drive_pci, t2);

		t1 = mwdma_timings[mode - XFER_MW_DMA_0];
	} else
		t1 = pio_timings[mode - XFER_PIO_0];

	pci_write_config_byte(dev, drive_pci + 1, t1);
}

static void sis_ata133_program_timings(ide_drive_t *drive, const u8 mode)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u32 t1 = 0;
	u8 drive_pci = sis_ata133_get_base(drive), clk, idx;

	pci_read_config_dword(dev, drive_pci, &t1);

	t1 &= 0xc0c00fff;
	clk = (t1 & 0x08) ? ATA_133 : ATA_100;
	if (mode >= XFER_MW_DMA_0) {
		t1 &= ~0x04;	/* disable UDMA */
		idx = mode - XFER_MW_DMA_0 + 5;
	} else
		idx = mode - XFER_PIO_0;
	t1 |= ini_time_value[clk][idx] << 12;
	t1 |= act_time_value[clk][idx] << 16;
	t1 |= rco_time_value[clk][idx] << 24;

	pci_write_config_dword(dev, drive_pci, t1);
}

static void sis_program_timings(ide_drive_t *drive, const u8 mode)
{
	if (chipset_family < ATA_100)		/* ATA_16/33/66/100a */
		sis_ata16_program_timings(drive, mode);
	else if (chipset_family < ATA_133)	/* ATA_100/133a */
		sis_ata100_program_timings(drive, mode);
	else					/* ATA_133 */
		sis_ata133_program_timings(drive, mode);
}

static void config_drive_art_rwp (ide_drive_t *drive)
{
	ide_hwif_t *hwif	= HWIF(drive);
	struct pci_dev *dev	= hwif->pci_dev;
	u8 reg4bh		= 0;
	u8 rw_prefetch		= 0;

	pci_read_config_byte(dev, 0x4b, &reg4bh);

	if (drive->media == ide_disk)
		rw_prefetch = 0x11 << drive->dn;

	if ((reg4bh & (0x11 << drive->dn)) != rw_prefetch)
		pci_write_config_byte(dev, 0x4b, reg4bh|rw_prefetch);
}

static void sis_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
	config_drive_art_rwp(drive);
	sis_program_timings(drive, XFER_PIO_0 + pio);
}

static void sis_ata133_program_udma_timings(ide_drive_t *drive, const u8 mode)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u32 regdw = 0;
	u8 drive_pci = sis_ata133_get_base(drive), clk, idx;

	pci_read_config_dword(dev, drive_pci, &regdw);

	regdw |= 0x04;
	regdw &= 0xfffff00f;
	/* check if ATA133 enable */
	clk = (regdw & 0x08) ? ATA_133 : ATA_100;
	idx = mode - XFER_UDMA_0;
	regdw |= cycle_time_value[clk][idx] << 4;
	regdw |= cvs_time_value[clk][idx] << 8;

	pci_write_config_dword(dev, drive_pci, regdw);
}

static void sis_ata33_program_udma_timings(ide_drive_t *drive, const u8 mode)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u8 drive_pci = 0x40 + drive->dn * 2, reg = 0, i = chipset_family;

	pci_read_config_byte(dev, drive_pci + 1, &reg);

	/* force the UDMA bit on if we want to use UDMA */
	reg |= 0x80;
	/* clean reg cycle time bits */
	reg &= ~((0xff >> (8 - cycle_time_range[i])) << cycle_time_offset[i]);
	/* set reg cycle time bits */
	reg |= cycle_time_value[i][mode - XFER_UDMA_0] << cycle_time_offset[i];

	pci_write_config_byte(dev, drive_pci + 1, reg);
}

static void sis_program_udma_timings(ide_drive_t *drive, const u8 mode)
{
	if (chipset_family >= ATA_133)	/* ATA_133 */
		sis_ata133_program_udma_timings(drive, mode);
	else				/* ATA_33/66/100a/100/133a */
		sis_ata33_program_udma_timings(drive, mode);
}

static void sis_set_dma_mode(ide_drive_t *drive, const u8 speed)
{
	if (speed >= XFER_UDMA_0)
		sis_program_udma_timings(drive, speed);
	else
		sis_program_timings(drive, speed);
}

static u8 sis5513_ata133_udma_filter(ide_drive_t *drive)
{
	struct pci_dev *dev = drive->hwif->pci_dev;
	u32 regdw = 0;
	u8 drive_pci = sis_ata133_get_base(drive);

	pci_read_config_dword(dev, drive_pci, &regdw);

	/* if ATA133 disable, we should not set speed above UDMA5 */
	return (regdw & 0x08) ? ATA_UDMA6 : ATA_UDMA5;
}

/* Chip detection and general config */
static unsigned int __devinit init_chipset_sis5513 (struct pci_dev *dev, const char *name)
{
	struct pci_dev *host;
	int i = 0;

	chipset_family = 0;

	for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {

		host = pci_get_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);

		if (!host)
			continue;

		chipset_family = SiSHostChipInfo[i].chipset_family;

		/* Special case for SiS630 : 630S/ET is ATA_100a */
		if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
			if (host->revision >= 0x30)
				chipset_family = ATA_100a;
		}
		pci_dev_put(host);
	
		printk(KERN_INFO "SIS5513: %s %s controller\n",
			 SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
	}

	if (!chipset_family) { /* Belongs to pci-quirks */

			u32 idemisc;
			u16 trueid;

			/* Disable ID masking and register remapping */
			pci_read_config_dword(dev, 0x54, &idemisc);
			pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
			pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
			pci_write_config_dword(dev, 0x54, idemisc);

			if (trueid == 0x5518) {
				printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
				chipset_family = ATA_133;

				/* Check for 5513 compability mapping
				 * We must use this, else the port enabled code will fail,
				 * as it expects the enablebits at 0x4a.
				 */
				if ((idemisc & 0x40000000) == 0) {
					pci_write_config_dword(dev, 0x54, idemisc | 0x40000000);
					printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
				}
			}
	}

	if (!chipset_family) { /* Belongs to pci-quirks */

			struct pci_dev *lpc_bridge;
			u16 trueid;
			u8 prefctl;
			u8 idecfg;

			pci_read_config_byte(dev, 0x4a, &idecfg);
			pci_write_config_byte(dev, 0x4a, idecfg | 0x10);
			pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
			pci_write_config_byte(dev, 0x4a, idecfg);

			if (trueid == 0x5517) { /* SiS 961/961B */

				lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
				pci_read_config_byte(dev, 0x49, &prefctl);
				pci_dev_put(lpc_bridge);

				if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
					printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
					chipset_family = ATA_133a;
				} else {
					printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
					chipset_family = ATA_100;
				}
			}
	}

	if (!chipset_family)
		return -1;

	/* Make general config ops here
	   1/ tell IDE channels to operate in Compatibility mode only
	   2/ tell old chips to allow per drive IDE timings */

	{
		u8 reg;
		u16 regw;

		switch(chipset_family) {
			case ATA_133:
				/* SiS962 operation mode */
				pci_read_config_word(dev, 0x50, &regw);
				if (regw & 0x08)
					pci_write_config_word(dev, 0x50, regw&0xfff7);
				pci_read_config_word(dev, 0x52, &regw);
				if (regw & 0x08)
					pci_write_config_word(dev, 0x52, regw&0xfff7);
				break;
			case ATA_133a:
			case ATA_100:
				/* Fixup latency */
				pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
				/* Set compatibility bit */
				pci_read_config_byte(dev, 0x49, &reg);
				if (!(reg & 0x01)) {
					pci_write_config_byte(dev, 0x49, reg|0x01);
				}
				break;
			case ATA_100a:
			case ATA_66:
				/* Fixup latency */
				pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);

				/* On ATA_66 chips the bit was elsewhere */
				pci_read_config_byte(dev, 0x52, &reg);
				if (!(reg & 0x04)) {
					pci_write_config_byte(dev, 0x52, reg|0x04);
				}
				break;
			case ATA_33:
				/* On ATA_33 we didn't have a single bit to set */
				pci_read_config_byte(dev, 0x09, &reg);
				if ((reg & 0x0f) != 0x00) {
					pci_write_config_byte(dev, 0x09, reg&0xf0);
				}
			case ATA_16:
				/* force per drive recovery and active timings
				   needed on ATA_33 and below chips */
				pci_read_config_byte(dev, 0x52, &reg);
				if (!(reg & 0x08)) {
					pci_write_config_byte(dev, 0x52, reg|0x08);
				}
				break;
		}
	}

	return 0;
}

struct sis_laptop {
	u16 device;
	u16 subvendor;
	u16 subdevice;
};

static const struct sis_laptop sis_laptop[] = {
	/* devid, subvendor, subdev */
	{ 0x5513, 0x1043, 0x1107 },	/* ASUS A6K */
	{ 0x5513, 0x1734, 0x105f },	/* FSC Amilo A1630 */
	{ 0x5513, 0x1071, 0x8640 },     /* EasyNote K5305 */
	/* end marker */
	{ 0, }
};

static u8 __devinit ata66_sis5513(ide_hwif_t *hwif)
{
	struct pci_dev *pdev = hwif->pci_dev;
	const struct sis_laptop *lap = &sis_laptop[0];
	u8 ata66 = 0;

	while (lap->device) {
		if (lap->device == pdev->device &&
		    lap->subvendor == pdev->subsystem_vendor &&
		    lap->subdevice == pdev->subsystem_device)
			return ATA_CBL_PATA40_SHORT;
		lap++;
	}

	if (chipset_family >= ATA_133) {
		u16 regw = 0;
		u16 reg_addr = hwif->channel ? 0x52: 0x50;
		pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
		ata66 = (regw & 0x8000) ? 0 : 1;
	} else if (chipset_family >= ATA_66) {
		u8 reg48h = 0;
		u8 mask = hwif->channel ? 0x20 : 0x10;
		pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
		ata66 = (reg48h & mask) ? 0 : 1;
	}

	return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
}

static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
{
	u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };

	hwif->set_pio_mode = &sis_set_pio_mode;
	hwif->set_dma_mode = &sis_set_dma_mode;

	if (chipset_family >= ATA_133)
		hwif->udma_filter = sis5513_ata133_udma_filter;

	if (hwif->dma_base == 0)
		return;

	hwif->ultra_mask = udma_rates[chipset_family];

	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
		hwif->cbl = ata66_sis5513(hwif);
}

static const struct ide_port_info sis5513_chipset __devinitdata = {
	.name		= "SIS5513",
	.init_chipset	= init_chipset_sis5513,
	.init_hwif	= init_hwif_sis5513,
	.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
	.host_flags	= IDE_HFLAG_LEGACY_IRQS | IDE_HFLAG_NO_AUTODMA |
			  IDE_HFLAG_BOOTABLE,
	.pio_mask	= ATA_PIO4,
	.mwdma_mask	= ATA_MWDMA2,
};

static int __devinit sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
{
	return ide_setup_pci_device(dev, &sis5513_chipset);
}

static const struct pci_device_id sis5513_pci_tbl[] = {
	{ PCI_VDEVICE(SI, PCI_DEVICE_ID_SI_5513), 0 },
	{ PCI_VDEVICE(SI, PCI_DEVICE_ID_SI_5518), 0 },
	{ PCI_VDEVICE(SI, PCI_DEVICE_ID_SI_1180), 0 },
	{ 0, },
};
MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);

static struct pci_driver driver = {
	.name		= "SIS_IDE",
	.id_table	= sis5513_pci_tbl,
	.probe		= sis5513_init_one,
};

static int __init sis5513_ide_init(void)
{
	return ide_pci_register_driver(&driver);
}

module_init(sis5513_ide_init);

MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
MODULE_DESCRIPTION("PCI driver module for SIS IDE");
MODULE_LICENSE("GPL");

/*
 * TODO:
 *	- CLEANUP
 *	- Use drivers/ide/ide-timing.h !
 *	- More checks in the config registers (force values instead of
 *	  relying on the BIOS setting them correctly).
 *	- Further optimisations ?
 *	  . for example ATA66+ regs 0x48 & 0x4A
 */
Commit	Line	Data
1da177e4	1	/*
a718122c	2	* linux/drivers/ide/pci/sis5513.c Version 0.31 Aug 9, 2007
1da177e4 LT	3	*
	4	* Copyright (C) 1999-2000 Andre Hedrick <andre@linux-ide.org>
	5	* Copyright (C) 2002 Lionel Bouton <Lionel.Bouton@inet6.fr>, Maintainer
	6	* Copyright (C) 2003 Vojtech Pavlik <vojtech@suse.cz>
6b8cf772 BZ	7	* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
6b8cf772 BZ	8	*
1da177e4 LT	9	* May be copied or modified under the terms of the GNU General Public License
	10	*
	11	*
	12	* Thanks :
	13	*
	14	* SiS Taiwan : for direct support and hardware.
	15	* Daniela Engert : for initial ATA100 advices and numerous others.
	16	* John Fremlin, Manfred Spraul, Dave Morgan, Peter Kjellerstedt :
	17	* for checking code correctness, providing patches.
	18	*
	19	*
	20	* Original tests and design on the SiS620 chipset.
	21	* ATA100 tests and design on the SiS735 chipset.
	22	* ATA16/33 support from specs
	23	* ATA133 support for SiS961/962 by L.C. Chang <lcchang@sis.com.tw>
	24	* ATA133 961/962/963 fixes by Vojtech Pavlik <vojtech@suse.cz>
	25	*
	26	* Documentation:
	27	* SiS chipset documentation available under NDA to companies only
	28	* (not to individuals).
	29	*/
	30
	31	/*
	32	* The original SiS5513 comes from a SiS5511/55112/5513 chipset. The original
	33	* SiS5513 was also used in the SiS5596/5513 chipset. Thus if we see a SiS5511
	34	* or SiS5596, we can assume we see the first MWDMA-16 capable SiS5513 chip.
	35	*
	36	* Later SiS chipsets integrated the 5513 functionality into the NorthBridge,
	37	* starting with SiS5571 and up to SiS745. The PCI ID didn't change, though. We
	38	* can figure out that we have a more modern and more capable 5513 by looking
	39	* for the respective NorthBridge IDs.
	40	*
	41	* Even later (96x family) SiS chipsets use the MuTIOL link and place the 5513
	42	* into the SouthBrige. Here we cannot rely on looking up the NorthBridge PCI
	43	* ID, while the now ATA-133 capable 5513 still has the same PCI ID.
	44	* Fortunately the 5513 can be 'unmasked' by fiddling with some config space
	45	* bits, changing its device id to the true one - 5517 for 961 and 5518 for
	46	* 962/963.
	47	*/
	48
1da177e4 LT	49	#include <linux/types.h>
	50	#include <linux/module.h>
	51	#include <linux/kernel.h>
	52	#include <linux/delay.h>
	53	#include <linux/timer.h>
	54	#include <linux/mm.h>
	55	#include <linux/ioport.h>
	56	#include <linux/blkdev.h>
	57	#include <linux/hdreg.h>
	58
	59	#include <linux/interrupt.h>
	60	#include <linux/pci.h>
	61	#include <linux/init.h>
	62	#include <linux/ide.h>
	63
	64	#include <asm/irq.h>
	65
	66	#include "ide-timing.h"
	67
1da177e4 LT	68	/* registers layout and init values are chipset family dependant */
	69
	70	#define ATA_16 0x01
	71	#define ATA_33 0x02
	72	#define ATA_66 0x03
	73	#define ATA_100a 0x04 // SiS730/SiS550 is ATA100 with ATA66 layout
	74	#define ATA_100 0x05
	75	#define ATA_133a 0x06 // SiS961b with 133 support
	76	#define ATA_133 0x07 // SiS962/963
	77
	78	static u8 chipset_family;
	79
	80	/*
	81	* Devices supported
	82	*/
	83	static const struct {
	84	const char *name;
	85	u16 host_id;
	86	u8 chipset_family;
	87	u8 flags;
	88	} SiSHostChipInfo[] = {
47d4b906 DW	89	{ "SiS968", PCI_DEVICE_ID_SI_968, ATA_133 },
47d4b906 DW	90	{ "SiS966", PCI_DEVICE_ID_SI_966, ATA_133 },
14351f8e	91	{ "SiS965", PCI_DEVICE_ID_SI_965, ATA_133 },
1da177e4 LT	92	{ "SiS745", PCI_DEVICE_ID_SI_745, ATA_100 },
	93	{ "SiS735", PCI_DEVICE_ID_SI_735, ATA_100 },
	94	{ "SiS733", PCI_DEVICE_ID_SI_733, ATA_100 },
	95	{ "SiS635", PCI_DEVICE_ID_SI_635, ATA_100 },
	96	{ "SiS633", PCI_DEVICE_ID_SI_633, ATA_100 },
	97
	98	{ "SiS730", PCI_DEVICE_ID_SI_730, ATA_100a },
	99	{ "SiS550", PCI_DEVICE_ID_SI_550, ATA_100a },
	100
	101	{ "SiS640", PCI_DEVICE_ID_SI_640, ATA_66 },
	102	{ "SiS630", PCI_DEVICE_ID_SI_630, ATA_66 },
	103	{ "SiS620", PCI_DEVICE_ID_SI_620, ATA_66 },
	104	{ "SiS540", PCI_DEVICE_ID_SI_540, ATA_66 },
	105	{ "SiS530", PCI_DEVICE_ID_SI_530, ATA_66 },
	106
	107	{ "SiS5600", PCI_DEVICE_ID_SI_5600, ATA_33 },
	108	{ "SiS5598", PCI_DEVICE_ID_SI_5598, ATA_33 },
	109	{ "SiS5597", PCI_DEVICE_ID_SI_5597, ATA_33 },
	110	{ "SiS5591/2", PCI_DEVICE_ID_SI_5591, ATA_33 },
	111	{ "SiS5582", PCI_DEVICE_ID_SI_5582, ATA_33 },
	112	{ "SiS5581", PCI_DEVICE_ID_SI_5581, ATA_33 },
	113
	114	{ "SiS5596", PCI_DEVICE_ID_SI_5596, ATA_16 },
	115	{ "SiS5571", PCI_DEVICE_ID_SI_5571, ATA_16 },
d266ab88	116	{ "SiS5517", PCI_DEVICE_ID_SI_5517, ATA_16 },
1da177e4 LT	117	{ "SiS551x", PCI_DEVICE_ID_SI_5511, ATA_16 },
	118	};
	119
	120	/* Cycle time bits and values vary across chip dma capabilities
	121	These three arrays hold the register layout and the values to set.
	122	Indexed by chipset_family and (dma_mode - XFER_UDMA_0) */
	123
	124	/* {0, ATA_16, ATA_33, ATA_66, ATA_100a, ATA_100, ATA_133} */
	125	static u8 cycle_time_offset[] = {0,0,5,4,4,0,0};
	126	static u8 cycle_time_range[] = {0,0,2,3,3,4,4};
	127	static u8 cycle_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
	128	{0,0,0,0,0,0,0}, /* no udma */
	129	{0,0,0,0,0,0,0}, /* no udma */
	130	{3,2,1,0,0,0,0}, /* ATA_33 */
	131	{7,5,3,2,1,0,0}, /* ATA_66 */
	132	{7,5,3,2,1,0,0}, /* ATA_100a (730 specific), differences are on cycle_time range and offset */
	133	{11,7,5,4,2,1,0}, /* ATA_100 */
	134	{15,10,7,5,3,2,1}, /* ATA_133a (earliest 691 southbridges) */
	135	{15,10,7,5,3,2,1}, /* ATA_133 */
	136	};
	137	/* CRC Valid Setup Time vary across IDE clock setting 33/66/100/133
	138	See SiS962 data sheet for more detail */
	139	static u8 cvs_time_value[][XFER_UDMA_6 - XFER_UDMA_0 + 1] = {
	140	{0,0,0,0,0,0,0}, /* no udma */
	141	{0,0,0,0,0,0,0}, /* no udma */
	142	{2,1,1,0,0,0,0},
	143	{4,3,2,1,0,0,0},
	144	{4,3,2,1,0,0,0},
	145	{6,4,3,1,1,1,0},
	146	{9,6,4,2,2,2,2},
	147	{9,6,4,2,2,2,2},
	148	};
	149	/* Initialize time, Active time, Recovery time vary across
	150	IDE clock settings. These 3 arrays hold the register value
	151	for PIO0/1/2/3/4 and DMA0/1/2 mode in order */
	152	static u8 ini_time_value[][8] = {
	153	{0,0,0,0,0,0,0,0},
	154	{0,0,0,0,0,0,0,0},
	155	{2,1,0,0,0,1,0,0},
	156	{4,3,1,1,1,3,1,1},
	157	{4,3,1,1,1,3,1,1},
	158	{6,4,2,2,2,4,2,2},
	159	{9,6,3,3,3,6,3,3},
	160	{9,6,3,3,3,6,3,3},
	161	};
	162	static u8 act_time_value[][8] = {
	163	{0,0,0,0,0,0,0,0},
	164	{0,0,0,0,0,0,0,0},
	165	{9,9,9,2,2,7,2,2},
	166	{19,19,19,5,4,14,5,4},
	167	{19,19,19,5,4,14,5,4},
	168	{28,28,28,7,6,21,7,6},
	169	{38,38,38,10,9,28,10,9},
	170	{38,38,38,10,9,28,10,9},
	171	};
	172	static u8 rco_time_value[][8] = {
	173	{0,0,0,0,0,0,0,0},
	174	{0,0,0,0,0,0,0,0},
	175	{9,2,0,2,0,7,1,1},
	176	{19,5,1,5,2,16,3,2},
	177	{19,5,1,5,2,16,3,2},
	178	{30,9,3,9,4,25,6,4},
	179	{40,12,4,12,5,34,12,5},
	180	{40,12,4,12,5,34,12,5},
181	};
182
183	/*
184	* Printing configuration
185	*/
186	/* Used for chipset type printing at boot time */
187	static char* chipset_capability[] = {
188	"ATA", "ATA 16",
189	"ATA 33", "ATA 66",
190	"ATA 100 (1st gen)", "ATA 100 (2nd gen)",
191	"ATA 133 (1st gen)", "ATA 133 (2nd gen)"
192	};
193
1da177e4 LT	194	/*
	195	* Configuration functions
	196	*/
c77a89cd BZ	197
	198	static u8 sis_ata133_get_base(ide_drive_t *drive)
	199	{
	200	struct pci_dev *dev = drive->hwif->pci_dev;
	201	u32 reg54 = 0;
	202
	203	pci_read_config_dword(dev, 0x54, &reg54);
	204
	205	return ((reg54 & 0x40000000) ? 0x70 : 0x40) + drive->dn * 4;
	206	}
	207
	208	static void sis_ata16_program_timings(ide_drive_t *drive, const u8 mode)
	209	{
	210	struct pci_dev *dev = drive->hwif->pci_dev;
	211	u16 t1 = 0;
	212	u8 drive_pci = 0x40 + drive->dn * 2;
	213
	214	const u16 pio_timings[] = { 0x000, 0x607, 0x404, 0x303, 0x301 };
	215	const u16 mwdma_timings[] = { 0x008, 0x302, 0x301 };
	216
	217	pci_read_config_word(dev, drive_pci, &t1);
	218
	219	/* clear active/recovery timings */
	220	t1 &= ~0x070f;
	221	if (mode >= XFER_MW_DMA_0) {
	222	if (chipset_family > ATA_16)
	223	t1 &= ~0x8000; /* disable UDMA */
	224	t1 \|= mwdma_timings[mode - XFER_MW_DMA_0];
	225	} else
	226	t1 \|= pio_timings[mode - XFER_PIO_0];
	227
	228	pci_write_config_word(dev, drive_pci, t1);
	229	}
	230
	231	static void sis_ata100_program_timings(ide_drive_t *drive, const u8 mode)
	232	{
	233	struct pci_dev *dev = drive->hwif->pci_dev;
	234	u8 t1, drive_pci = 0x40 + drive->dn * 2;
	235
	236	/* timing bits: 7:4 active 3:0 recovery */
	237	const u8 pio_timings[] = { 0x00, 0x67, 0x44, 0x33, 0x31 };
	238	const u8 mwdma_timings[] = { 0x08, 0x32, 0x31 };
	239
	240	if (mode >= XFER_MW_DMA_0) {
	241	u8 t2 = 0;
	242
	243	pci_read_config_byte(dev, drive_pci, &t2);
	244	t2 &= ~0x80; /* disable UDMA */
	245	pci_write_config_byte(dev, drive_pci, t2);
	246
	247	t1 = mwdma_timings[mode - XFER_MW_DMA_0];
	248	} else
	249	t1 = pio_timings[mode - XFER_PIO_0];
	250
	251	pci_write_config_byte(dev, drive_pci + 1, t1);
	252	}
	253
	254	static void sis_ata133_program_timings(ide_drive_t *drive, const u8 mode)
	255	{
	256	struct pci_dev *dev = drive->hwif->pci_dev;
	257	u32 t1 = 0;
	258	u8 drive_pci = sis_ata133_get_base(drive), clk, idx;
	259
	260	pci_read_config_dword(dev, drive_pci, &t1);
261
262	t1 &= 0xc0c00fff;
263	clk = (t1 & 0x08) ? ATA_133 : ATA_100;
264	if (mode >= XFER_MW_DMA_0) {
265	t1 &= ~0x04; /* disable UDMA */
266	idx = mode - XFER_MW_DMA_0 + 5;
3dfd6433	267	} else
c77a89cd BZ	268	idx = mode - XFER_PIO_0;
	269	t1 \|= ini_time_value[clk][idx] << 12;
	270	t1 \|= act_time_value[clk][idx] << 16;
	271	t1 \|= rco_time_value[clk][idx] << 24;
	272
	273	pci_write_config_dword(dev, drive_pci, t1);
	274	}
	275
	276	static void sis_program_timings(ide_drive_t *drive, const u8 mode)
	277	{
	278	if (chipset_family < ATA_100) /* ATA_16/33/66/100a */
	279	sis_ata16_program_timings(drive, mode);
	280	else if (chipset_family < ATA_133) /* ATA_100/133a */
	281	sis_ata100_program_timings(drive, mode);
	282	else /* ATA_133 */
	283	sis_ata133_program_timings(drive, mode);
	284	}
	285
1da177e4 LT	286	static void config_drive_art_rwp (ide_drive_t *drive)
	287	{
	288	ide_hwif_t *hwif = HWIF(drive);
	289	struct pci_dev *dev = hwif->pci_dev;
1da177e4	290	u8 reg4bh = 0;
d83fca58	291	u8 rw_prefetch = 0;
1da177e4	292
1da177e4 LT	293	pci_read_config_byte(dev, 0x4b, &reg4bh);
1da177e4 LT	294
d83fca58 BZ	295	if (drive->media == ide_disk)
	296	rw_prefetch = 0x11 << drive->dn;
	297
	298	if ((reg4bh & (0x11 << drive->dn)) != rw_prefetch)
1da177e4 LT	299	pci_write_config_byte(dev, 0x4b, reg4bh\|rw_prefetch);
	300	}
	301
88b2b32b	302	static void sis_set_pio_mode(ide_drive_t *drive, const u8 pio)
1da177e4	303	{
1da177e4	304	config_drive_art_rwp(drive);
c77a89cd	305	sis_program_timings(drive, XFER_PIO_0 + pio);
1da177e4 LT	306	}
1da177e4 LT	307
428c6440	308	static void sis_ata133_program_udma_timings(ide_drive_t *drive, const u8 mode)
1da177e4	309	{
428c6440 BZ	310	struct pci_dev *dev = drive->hwif->pci_dev;
	311	u32 regdw = 0;
	312	u8 drive_pci = sis_ata133_get_base(drive), clk, idx;
	313
	314	pci_read_config_dword(dev, drive_pci, &regdw);
	315
	316	regdw \|= 0x04;
	317	regdw &= 0xfffff00f;
	318	/* check if ATA133 enable */
	319	clk = (regdw & 0x08) ? ATA_133 : ATA_100;
	320	idx = mode - XFER_UDMA_0;
	321	regdw \|= cycle_time_value[clk][idx] << 4;
	322	regdw \|= cvs_time_value[clk][idx] << 8;
	323
	324	pci_write_config_dword(dev, drive_pci, regdw);
	325	}
	326
	327	static void sis_ata33_program_udma_timings(ide_drive_t *drive, const u8 mode)
	328	{
	329	struct pci_dev *dev = drive->hwif->pci_dev;
	330	u8 drive_pci = 0x40 + drive->dn * 2, reg = 0, i = chipset_family;
	331
	332	pci_read_config_byte(dev, drive_pci + 1, &reg);
	333
	334	/* force the UDMA bit on if we want to use UDMA */
	335	reg \|= 0x80;
	336	/* clean reg cycle time bits */
	337	reg &= ~((0xff >> (8 - cycle_time_range[i])) << cycle_time_offset[i]);
	338	/* set reg cycle time bits */
	339	reg \|= cycle_time_value[i][mode - XFER_UDMA_0] << cycle_time_offset[i];
	340
	341	pci_write_config_byte(dev, drive_pci + 1, reg);
	342	}
1da177e4	343
428c6440 BZ	344	static void sis_program_udma_timings(ide_drive_t *drive, const u8 mode)
	345	{
	346	if (chipset_family >= ATA_133) /* ATA_133 */
	347	sis_ata133_program_udma_timings(drive, mode);
	348	else /* ATA_33/66/100a/100/133a */
	349	sis_ata33_program_udma_timings(drive, mode);
	350	}
	351
	352	static void sis_set_dma_mode(ide_drive_t *drive, const u8 speed)
	353	{
4db90a14 BZ	354	if (speed >= XFER_UDMA_0)
	355	sis_program_udma_timings(drive, speed);
	356	else
	357	sis_program_timings(drive, speed);
1da177e4 LT	358	}
1da177e4 LT	359
3160d541 BZ	360	static u8 sis5513_ata133_udma_filter(ide_drive_t *drive)
	361	{
	362	struct pci_dev *dev = drive->hwif->pci_dev;
c77a89cd BZ	363	u32 regdw = 0;
c77a89cd BZ	364	u8 drive_pci = sis_ata133_get_base(drive);
3160d541	365
3160d541 BZ	366	pci_read_config_dword(dev, drive_pci, &regdw);
	367
	368	/* if ATA133 disable, we should not set speed above UDMA5 */
	369	return (regdw & 0x08) ? ATA_UDMA6 : ATA_UDMA5;
	370	}
	371
1da177e4	372	/* Chip detection and general config */
2b0c4bed	373	static unsigned int __devinit init_chipset_sis5513 (struct pci_dev dev, const char name)
1da177e4 LT	374	{
	375	struct pci_dev *host;
	376	int i = 0;
	377
	378	chipset_family = 0;
	379
	380	for (i = 0; i < ARRAY_SIZE(SiSHostChipInfo) && !chipset_family; i++) {
	381
40cddf2c	382	host = pci_get_device(PCI_VENDOR_ID_SI, SiSHostChipInfo[i].host_id, NULL);
1da177e4 LT	383
	384	if (!host)
	385	continue;
	386
	387	chipset_family = SiSHostChipInfo[i].chipset_family;
	388
	389	/* Special case for SiS630 : 630S/ET is ATA_100a */
	390	if (SiSHostChipInfo[i].host_id == PCI_DEVICE_ID_SI_630) {
44c10138	391	if (host->revision >= 0x30)
1da177e4 LT	392	chipset_family = ATA_100a;
1da177e4 LT	393	}
40cddf2c	394	pci_dev_put(host);
1da177e4 LT	395
	396	printk(KERN_INFO "SIS5513: %s %s controller\n",
	397	SiSHostChipInfo[i].name, chipset_capability[chipset_family]);
	398	}
	399
	400	if (!chipset_family) { /* Belongs to pci-quirks */
	401
	402	u32 idemisc;
	403	u16 trueid;
	404
	405	/* Disable ID masking and register remapping */
	406	pci_read_config_dword(dev, 0x54, &idemisc);
	407	pci_write_config_dword(dev, 0x54, (idemisc & 0x7fffffff));
	408	pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
	409	pci_write_config_dword(dev, 0x54, idemisc);
	410
	411	if (trueid == 0x5518) {
	412	printk(KERN_INFO "SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller\n");
	413	chipset_family = ATA_133;
	414
	415	/* Check for 5513 compability mapping
	416	* We must use this, else the port enabled code will fail,
	417	* as it expects the enablebits at 0x4a.
	418	*/
	419	if ((idemisc & 0x40000000) == 0) {
	420	pci_write_config_dword(dev, 0x54, idemisc \| 0x40000000);
	421	printk(KERN_INFO "SIS5513: Switching to 5513 register mapping\n");
	422	}
	423	}
	424	}
	425
	426	if (!chipset_family) { /* Belongs to pci-quirks */
	427
	428	struct pci_dev *lpc_bridge;
	429	u16 trueid;
	430	u8 prefctl;
	431	u8 idecfg;
1da177e4 LT	432
	433	pci_read_config_byte(dev, 0x4a, &idecfg);
	434	pci_write_config_byte(dev, 0x4a, idecfg \| 0x10);
	435	pci_read_config_word(dev, PCI_DEVICE_ID, &trueid);
	436	pci_write_config_byte(dev, 0x4a, idecfg);
	437
	438	if (trueid == 0x5517) { /* SiS 961/961B */
	439
b1489009	440	lpc_bridge = pci_get_slot(dev->bus, 0x10); /* Bus 0, Dev 2, Fn 0 */
1da177e4	441	pci_read_config_byte(dev, 0x49, &prefctl);
b1489009	442	pci_dev_put(lpc_bridge);
1da177e4	443
44c10138	444	if (lpc_bridge->revision == 0x10 && (prefctl & 0x80)) {
1da177e4 LT	445	printk(KERN_INFO "SIS5513: SiS 961B MuTIOL IDE UDMA133 controller\n");
	446	chipset_family = ATA_133a;
	447	} else {
	448	printk(KERN_INFO "SIS5513: SiS 961 MuTIOL IDE UDMA100 controller\n");
	449	chipset_family = ATA_100;
	450	}
	451	}
	452	}
	453
	454	if (!chipset_family)
	455	return -1;
	456
	457	/* Make general config ops here
	458	1/ tell IDE channels to operate in Compatibility mode only
	459	2/ tell old chips to allow per drive IDE timings */
	460
	461	{
	462	u8 reg;
	463	u16 regw;
	464
	465	switch(chipset_family) {
	466	case ATA_133:
	467	/* SiS962 operation mode */
	468	pci_read_config_word(dev, 0x50, &regw);
	469	if (regw & 0x08)
	470	pci_write_config_word(dev, 0x50, regw&0xfff7);
	471	pci_read_config_word(dev, 0x52, &regw);
	472	if (regw & 0x08)
	473	pci_write_config_word(dev, 0x52, regw&0xfff7);
	474	break;
	475	case ATA_133a:
	476	case ATA_100:
	477	/* Fixup latency */
	478	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x80);
	479	/* Set compatibility bit */
	480	pci_read_config_byte(dev, 0x49, &reg);
	481	if (!(reg & 0x01)) {
	482	pci_write_config_byte(dev, 0x49, reg\|0x01);
	483	}
	484	break;
	485	case ATA_100a:
	486	case ATA_66:
	487	/* Fixup latency */
	488	pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0x10);
	489
	490	/* On ATA_66 chips the bit was elsewhere */
	491	pci_read_config_byte(dev, 0x52, &reg);
	492	if (!(reg & 0x04)) {
	493	pci_write_config_byte(dev, 0x52, reg\|0x04);
	494	}
	495	break;
	496	case ATA_33:
	497	/* On ATA_33 we didn't have a single bit to set */
	498	pci_read_config_byte(dev, 0x09, &reg);
	499	if ((reg & 0x0f) != 0x00) {
	500	pci_write_config_byte(dev, 0x09, reg&0xf0);
	501	}
	502	case ATA_16:
	503	/* force per drive recovery and active timings
	504	needed on ATA_33 and below chips */
	505	pci_read_config_byte(dev, 0x52, &reg);
	506	if (!(reg & 0x08)) {
	507	pci_write_config_byte(dev, 0x52, reg\|0x08);
	508	}
509	break;
510	}
1da177e4 LT	511	}
	512
	513	return 0;
	514	}
	515
f2befd9e BZ	516	struct sis_laptop {
	517	u16 device;
	518	u16 subvendor;
	519	u16 subdevice;
	520	};
	521
	522	static const struct sis_laptop sis_laptop[] = {
	523	/* devid, subvendor, subdev */
	524	{ 0x5513, 0x1043, 0x1107 }, /* ASUS A6K */
1955f681	525	{ 0x5513, 0x1734, 0x105f }, /* FSC Amilo A1630 */
a1d85864	526	{ 0x5513, 0x1071, 0x8640 }, /* EasyNote K5305 */
f2befd9e BZ	527	/* end marker */
	528	{ 0, }
	529	};
	530
49521f97	531	static u8 __devinit ata66_sis5513(ide_hwif_t *hwif)
1da177e4	532	{
f2befd9e BZ	533	struct pci_dev *pdev = hwif->pci_dev;
f2befd9e BZ	534	const struct sis_laptop *lap = &sis_laptop[0];
1da177e4 LT	535	u8 ata66 = 0;
1da177e4 LT	536
f2befd9e BZ	537	while (lap->device) {
	538	if (lap->device == pdev->device &&
	539	lap->subvendor == pdev->subsystem_vendor &&
	540	lap->subdevice == pdev->subsystem_device)
	541	return ATA_CBL_PATA40_SHORT;
	542	lap++;
	543	}
	544
1da177e4 LT	545	if (chipset_family >= ATA_133) {
	546	u16 regw = 0;
	547	u16 reg_addr = hwif->channel ? 0x52: 0x50;
	548	pci_read_config_word(hwif->pci_dev, reg_addr, &regw);
	549	ata66 = (regw & 0x8000) ? 0 : 1;
	550	} else if (chipset_family >= ATA_66) {
	551	u8 reg48h = 0;
	552	u8 mask = hwif->channel ? 0x20 : 0x10;
	553	pci_read_config_byte(hwif->pci_dev, 0x48, &reg48h);
	554	ata66 = (reg48h & mask) ? 0 : 1;
	555	}
49521f97 BZ	556
49521f97 BZ	557	return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
1da177e4 LT	558	}
1da177e4 LT	559
2b0c4bed	560	static void __devinit init_hwif_sis5513 (ide_hwif_t *hwif)
1da177e4	561	{
18137207 BZ	562	u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };
18137207 BZ	563
26bcb879	564	hwif->set_pio_mode = &sis_set_pio_mode;
88b2b32b	565	hwif->set_dma_mode = &sis_set_dma_mode;
1da177e4	566
3160d541 BZ	567	if (chipset_family >= ATA_133)
	568	hwif->udma_filter = sis5513_ata133_udma_filter;
	569
4960ab7c	570	if (hwif->dma_base == 0)
1da177e4	571	return;
1da177e4	572
18137207	573	hwif->ultra_mask = udma_rates[chipset_family];
1da177e4	574
49521f97 BZ	575	if (hwif->cbl != ATA_CBL_PATA40_SHORT)
49521f97 BZ	576	hwif->cbl = ata66_sis5513(hwif);
1da177e4 LT	577	}
1da177e4 LT	578
85620436	579	static const struct ide_port_info sis5513_chipset __devinitdata = {
1da177e4 LT	580	.name = "SIS5513",
	581	.init_chipset = init_chipset_sis5513,
	582	.init_hwif = init_hwif_sis5513,
1da177e4	583	.enablebits = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
3985ee3b BZ	584	.host_flags = IDE_HFLAG_LEGACY_IRQS \| IDE_HFLAG_NO_AUTODMA \|
3985ee3b BZ	585	IDE_HFLAG_BOOTABLE,
4099d143	586	.pio_mask = ATA_PIO4,
5f8b6c34	587	.mwdma_mask = ATA_MWDMA2,
1da177e4 LT	588	};
	589
	590	static int __devinit sis5513_init_one(struct pci_dev dev, const struct pci_device_id id)
	591	{
	592	return ide_setup_pci_device(dev, &sis5513_chipset);
	593	}
	594
9cbcc5e3 BZ	595	static const struct pci_device_id sis5513_pci_tbl[] = {
	596	{ PCI_VDEVICE(SI, PCI_DEVICE_ID_SI_5513), 0 },
	597	{ PCI_VDEVICE(SI, PCI_DEVICE_ID_SI_5518), 0 },
	598	{ PCI_VDEVICE(SI, PCI_DEVICE_ID_SI_1180), 0 },
1da177e4 LT	599	{ 0, },
	600	};
	601	MODULE_DEVICE_TABLE(pci, sis5513_pci_tbl);
	602
	603	static struct pci_driver driver = {
	604	.name = "SIS_IDE",
	605	.id_table = sis5513_pci_tbl,
	606	.probe = sis5513_init_one,
	607	};
	608
82ab1eec	609	static int __init sis5513_ide_init(void)
1da177e4 LT	610	{
	611	return ide_pci_register_driver(&driver);
	612	}
	613
	614	module_init(sis5513_ide_init);
	615
	616	MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
	617	MODULE_DESCRIPTION("PCI driver module for SIS IDE");
	618	MODULE_LICENSE("GPL");
	619
	620	/*
	621	* TODO:
	622	* - CLEANUP
	623	* - Use drivers/ide/ide-timing.h !
	624	* - More checks in the config registers (force values instead of
	625	* relying on the BIOS setting them correctly).
	626	* - Further optimisations ?
	627	* . for example ATA66+ regs 0x48 & 0x4A
	628	*/