/*
   * 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) 2007-2009	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/pci.h>
  #include <linux/init.h>
  #include <linux/ide.h>
  
  #define DRV_NAME "sis5513"
  
  /* registers layout and init values are chipset family dependent */
  
  #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),
  				      different 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 = to_pci_dev(drive->hwif->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 = to_pci_dev(drive->hwif->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 = to_pci_dev(drive->hwif->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 = to_pci_dev(drive->hwif->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	= drive->hwif;
  	struct pci_dev *dev	= to_pci_dev(hwif->dev);
  	u8 reg4bh		= 0;
  	u8 rw_prefetch		= 0;
  
  	pci_read_config_byte(dev, 0x4b, &reg4bh);
  
  	rw_prefetch = reg4bh & ~(0x11 << drive->dn);
  
  	if (drive->media == ide_disk)
  		rw_prefetch |= 0x11 << drive->dn;
  
  	if (reg4bh != rw_prefetch)
  		pci_write_config_byte(dev, 0x4b, rw_prefetch);
  }
  
  static void sis_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
  {
  	config_drive_art_rwp(drive);
  	sis_program_timings(drive, drive->pio_mode);
  }
  
  static void sis_ata133_program_udma_timings(ide_drive_t *drive, const u8 mode)
  {
  	struct pci_dev *dev = to_pci_dev(drive->hwif->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 = to_pci_dev(drive->hwif->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_hwif_t *hwif, ide_drive_t *drive)
  {
  	const u8 speed = drive->dma_mode;
  
  	if (speed >= XFER_UDMA_0)
  		sis_program_udma_timings(drive, speed);
  	else
  		sis_program_timings(drive, speed);
  }
  
  static u8 sis_ata133_udma_filter(ide_drive_t *drive)
  {
  	struct pci_dev *dev = to_pci_dev(drive->hwif->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;
  }
  
  static int sis_find_family(struct pci_dev *dev)
  {
  	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 DRV_NAME " %s: %s %s controller
  ",
  			pci_name(dev), 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 DRV_NAME " %s: SiS 962/963 MuTIOL IDE UDMA133 controller
  ",
  					pci_name(dev));
  				chipset_family = ATA_133;
  
  				/* Check for 5513 compatibility 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 DRV_NAME " %s: Switching to 5513 register mapping
  ",
  						pci_name(dev));
  				}
  			}
  	}
  
  	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 DRV_NAME " %s: SiS 961B MuTIOL IDE UDMA133 controller
  ",
  						pci_name(dev));
  					chipset_family = ATA_133a;
  				} else {
  					printk(KERN_INFO DRV_NAME " %s: SiS 961 MuTIOL IDE UDMA100 controller
  ",
  						pci_name(dev));
  					chipset_family = ATA_100;
  				}
  			}
  	}
  
  	return chipset_family;
  }
  
  static int init_chipset_sis5513(struct pci_dev *dev)
  {
  	/* 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 sis_cable_detect(ide_hwif_t *hwif)
  {
  	struct pci_dev *pdev = to_pci_dev(hwif->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(pdev, 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(pdev, 0x48, &reg48h);
  		ata66 = (reg48h & mask) ? 0 : 1;
  	}
  
  	return ata66 ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
  }
  
  static const struct ide_port_ops sis_port_ops = {
  	.set_pio_mode		= sis_set_pio_mode,
  	.set_dma_mode		= sis_set_dma_mode,
  	.cable_detect		= sis_cable_detect,
  };
  
  static const struct ide_port_ops sis_ata133_port_ops = {
  	.set_pio_mode		= sis_set_pio_mode,
  	.set_dma_mode		= sis_set_dma_mode,
  	.udma_filter		= sis_ata133_udma_filter,
  	.cable_detect		= sis_cable_detect,
  };
  
  static const struct ide_port_info sis5513_chipset = {
  	.name		= DRV_NAME,
  	.init_chipset	= init_chipset_sis5513,
  	.enablebits	= { {0x4a, 0x02, 0x02}, {0x4a, 0x04, 0x04} },
  	.host_flags	= IDE_HFLAG_NO_AUTODMA,
  	.pio_mask	= ATA_PIO4,
  	.mwdma_mask	= ATA_MWDMA2,
  };
  
  static int sis5513_init_one(struct pci_dev *dev, const struct pci_device_id *id)
  {
  	struct ide_port_info d = sis5513_chipset;
  	u8 udma_rates[] = { 0x00, 0x00, 0x07, 0x1f, 0x3f, 0x3f, 0x7f, 0x7f };
  	int rc;
  
  	rc = pci_enable_device(dev);
  	if (rc)
  		return rc;
  
  	if (sis_find_family(dev) == 0)
  		return -ENOTSUPP;
  
  	if (chipset_family >= ATA_133)
  		d.port_ops = &sis_ata133_port_ops;
  	else
  		d.port_ops = &sis_port_ops;
  
  	d.udma_mask = udma_rates[chipset_family];
  
  	return ide_pci_init_one(dev, &d, NULL);
  }
  
  static void sis5513_remove(struct pci_dev *dev)
  {
  	ide_pci_remove(dev);
  	pci_disable_device(dev);
  }
  
  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 sis5513_pci_driver = {
  	.name		= "SIS_IDE",
  	.id_table	= sis5513_pci_tbl,
  	.probe		= sis5513_init_one,
  	.remove		= sis5513_remove,
  	.suspend	= ide_pci_suspend,
  	.resume		= ide_pci_resume,
  };
  
  static int __init sis5513_ide_init(void)
  {
  	return ide_pci_register_driver(&sis5513_pci_driver);
  }
  
  static void __exit sis5513_ide_exit(void)
  {
  	pci_unregister_driver(&sis5513_pci_driver);
  }
  
  module_init(sis5513_ide_init);
  module_exit(sis5513_ide_exit);
  
  MODULE_AUTHOR("Lionel Bouton, L C Chang, Andre Hedrick, Vojtech Pavlik");
  MODULE_DESCRIPTION("PCI driver module for SIS IDE");
  MODULE_LICENSE("GPL");