drivers/ide/pci/atiixp.c - maze/linux - Git at Google

 /*
  *  linux/drivers/ide/pci/atiixp.c	Version 0.03	Aug 3 2007
  *
  *  Copyright (C) 2003 ATI Inc. <hyu@ati.com>
  *  Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
  */

 #include <linux/types.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/ioport.h>
 #include <linux/pci.h>
 #include <linux/hdreg.h>
 #include <linux/ide.h>
 #include <linux/delay.h>
 #include <linux/init.h>

 #include <asm/io.h>

 #define ATIIXP_IDE_PIO_TIMING		0x40
 #define ATIIXP_IDE_MDMA_TIMING		0x44
 #define ATIIXP_IDE_PIO_CONTROL		0x48
 #define ATIIXP_IDE_PIO_MODE		0x4a
 #define ATIIXP_IDE_UDMA_CONTROL		0x54
 #define ATIIXP_IDE_UDMA_MODE		0x56

 typedef struct {
 	u8 command_width;
 	u8 recover_width;
 } atiixp_ide_timing;

 static atiixp_ide_timing pio_timing[] = {
 	{ 0x05, 0x0d },
 	{ 0x04, 0x07 },
 	{ 0x03, 0x04 },
 	{ 0x02, 0x02 },
 	{ 0x02, 0x00 },
 };

 static atiixp_ide_timing mdma_timing[] = {
 	{ 0x07, 0x07 },
 	{ 0x02, 0x01 },
 	{ 0x02, 0x00 },
 };

 static int save_mdma_mode[4];

 static DEFINE_SPINLOCK(atiixp_lock);

 static void atiixp_dma_host_on(ide_drive_t *drive)
 {
 	struct pci_dev *dev = drive->hwif->pci_dev;
 	unsigned long flags;
 	u16 tmp16;

 	spin_lock_irqsave(&atiixp_lock, flags);

 	pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
 	if (save_mdma_mode[drive->dn])
 		tmp16 &= ~(1 << drive->dn);
 	else
 		tmp16 |= (1 << drive->dn);
 	pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);

 	spin_unlock_irqrestore(&atiixp_lock, flags);

 	ide_dma_host_on(drive);
 }

 static void atiixp_dma_host_off(ide_drive_t *drive)
 {
 	struct pci_dev *dev = drive->hwif->pci_dev;
 	unsigned long flags;
 	u16 tmp16;

 	spin_lock_irqsave(&atiixp_lock, flags);

 	pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
 	tmp16 &= ~(1 << drive->dn);
 	pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);

 	spin_unlock_irqrestore(&atiixp_lock, flags);

 	ide_dma_host_off(drive);
 }

 /**
  *	atiixp_set_pio_mode	-	set host controller for PIO mode
  *	@drive: drive
  *	@pio: PIO mode number
  *
  *	Set the interface PIO mode.
  */

 static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
 	struct pci_dev *dev = drive->hwif->pci_dev;
 	unsigned long flags;
 	int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
 	u32 pio_timing_data;
 	u16 pio_mode_data;

 	spin_lock_irqsave(&atiixp_lock, flags);

 	pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data);
 	pio_mode_data &= ~(0x07 << (drive->dn * 4));
 	pio_mode_data |= (pio << (drive->dn * 4));
 	pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data);

 	pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data);
 	pio_timing_data &= ~(0xff << timing_shift);
 	pio_timing_data |= (pio_timing[pio].recover_width << timing_shift) |
 		 (pio_timing[pio].command_width << (timing_shift + 4));
 	pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data);

 	spin_unlock_irqrestore(&atiixp_lock, flags);
 }

 /**
  *	atiixp_set_dma_mode	-	set host controller for DMA mode
  *	@drive: drive
  *	@speed: DMA mode
  *
  *	Set a ATIIXP host controller to the desired DMA mode.  This involves
  *	programming the right timing data into the PCI configuration space.
  */

 static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
 	struct pci_dev *dev = drive->hwif->pci_dev;
 	unsigned long flags;
 	int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
 	u32 tmp32;
 	u16 tmp16;

 	if (speed < XFER_MW_DMA_0)
 		return;

 	spin_lock_irqsave(&atiixp_lock, flags);

 	save_mdma_mode[drive->dn] = 0;
 	if (speed >= XFER_UDMA_0) {
 		pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
 		tmp16 &= ~(0x07 << (drive->dn * 4));
 		tmp16 |= ((speed & 0x07) << (drive->dn * 4));
 		pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
 	} else {
 		if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) {
 			save_mdma_mode[drive->dn] = speed;
 			pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
 			tmp32 &= ~(0xff << timing_shift);
 			tmp32 |= (mdma_timing[speed & 0x03].recover_width << timing_shift) |
 				(mdma_timing[speed & 0x03].command_width << (timing_shift + 4));
 			pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
 		}
 	}

 	spin_unlock_irqrestore(&atiixp_lock, flags);
 }

 /**
  *	init_hwif_atiixp		-	fill in the hwif for the ATIIXP
  *	@hwif: IDE interface
  *
  *	Set up the ide_hwif_t for the ATIIXP interface according to the
  *	capabilities of the hardware.
  */

 static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
 {
 	u8 udma_mode = 0;
 	u8 ch = hwif->channel;
 	struct pci_dev *pdev = hwif->pci_dev;

 	if (!hwif->irq)
 		hwif->irq = ch ? 15 : 14;

 	hwif->set_pio_mode = &atiixp_set_pio_mode;
 	hwif->set_dma_mode = &atiixp_set_dma_mode;
 	hwif->drives[0].autotune = 1;
 	hwif->drives[1].autotune = 1;

 	if (!hwif->dma_base)
 		return;

 	hwif->ultra_mask = 0x3f;
 	hwif->mwdma_mask = 0x07;

 	pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);

 	if ((udma_mode & 0x07) >= 0x04 || (udma_mode & 0x70) >= 0x40)
 		hwif->cbl = ATA_CBL_PATA80;
 	else
 		hwif->cbl = ATA_CBL_PATA40;

 	hwif->dma_host_on = &atiixp_dma_host_on;
 	hwif->dma_host_off = &atiixp_dma_host_off;
 }


 static ide_pci_device_t atiixp_pci_info[] __devinitdata = {
 	{	/* 0 */
 		.name		= "ATIIXP",
 		.init_hwif	= init_hwif_atiixp,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
 		.host_flags	= IDE_HFLAG_BOOTABLE,
 		.pio_mask	= ATA_PIO4,
 	},{	/* 1 */
 		.name		= "SB600_PATA",
 		.init_hwif	= init_hwif_atiixp,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
  		.host_flags	= IDE_HFLAG_SINGLE | IDE_HFLAG_BOOTABLE,
 		.pio_mask	= ATA_PIO4,
  	},
 };

 /**
  *	atiixp_init_one	-	called when a ATIIXP is found
  *	@dev: the atiixp device
  *	@id: the matching pci id
  *
  *	Called when the PCI registration layer (or the IDE initialization)
  *	finds a device matching our IDE device tables.
  */

 static int __devinit atiixp_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
 	return ide_setup_pci_device(dev, &atiixp_pci_info[id->driver_data]);
 }

 static const struct pci_device_id atiixp_pci_tbl[] = {
 	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP200_IDE), 0 },
 	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP300_IDE), 0 },
 	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP400_IDE), 0 },
 	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP600_IDE), 1 },
 	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP700_IDE), 0 },
 	{ 0, },
 };
 MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);

 static struct pci_driver driver = {
 	.name		= "ATIIXP_IDE",
 	.id_table	= atiixp_pci_tbl,
 	.probe		= atiixp_init_one,
 };

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

 module_init(atiixp_ide_init);

 MODULE_AUTHOR("HUI YU");
 MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
 MODULE_LICENSE("GPL");
	/*
	* linux/drivers/ide/pci/atiixp.c Version 0.03 Aug 3 2007
	*
	* Copyright (C) 2003 ATI Inc. <hyu@ati.com>
	* Copyright (C) 2004,2007 Bartlomiej Zolnierkiewicz
	*/

	#include <linux/types.h>
	#include <linux/module.h>
	#include <linux/kernel.h>
	#include <linux/ioport.h>
	#include <linux/pci.h>
	#include <linux/hdreg.h>
	#include <linux/ide.h>
	#include <linux/delay.h>
	#include <linux/init.h>

	#include <asm/io.h>

	#define ATIIXP_IDE_PIO_TIMING 0x40
	#define ATIIXP_IDE_MDMA_TIMING 0x44
	#define ATIIXP_IDE_PIO_CONTROL 0x48
	#define ATIIXP_IDE_PIO_MODE 0x4a
	#define ATIIXP_IDE_UDMA_CONTROL 0x54
	#define ATIIXP_IDE_UDMA_MODE 0x56

	typedef struct {
	u8 command_width;
	u8 recover_width;
	} atiixp_ide_timing;

	static atiixp_ide_timing pio_timing[] = {
	{ 0x05, 0x0d },
	{ 0x04, 0x07 },
	{ 0x03, 0x04 },
	{ 0x02, 0x02 },
	{ 0x02, 0x00 },
	};

	static atiixp_ide_timing mdma_timing[] = {
	{ 0x07, 0x07 },
	{ 0x02, 0x01 },
	{ 0x02, 0x00 },
	};

	static int save_mdma_mode[4];

	static DEFINE_SPINLOCK(atiixp_lock);

	static void atiixp_dma_host_on(ide_drive_t *drive)
	{
	struct pci_dev *dev = drive->hwif->pci_dev;
	unsigned long flags;
	u16 tmp16;

	spin_lock_irqsave(&atiixp_lock, flags);

	pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
	if (save_mdma_mode[drive->dn])
	tmp16 &= ~(1 << drive->dn);
	else
	tmp16 \|= (1 << drive->dn);
	pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);

	spin_unlock_irqrestore(&atiixp_lock, flags);

	ide_dma_host_on(drive);
	}

	static void atiixp_dma_host_off(ide_drive_t *drive)
	{
	struct pci_dev *dev = drive->hwif->pci_dev;
	unsigned long flags;
	u16 tmp16;

	spin_lock_irqsave(&atiixp_lock, flags);

	pci_read_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, &tmp16);
	tmp16 &= ~(1 << drive->dn);
	pci_write_config_word(dev, ATIIXP_IDE_UDMA_CONTROL, tmp16);

	spin_unlock_irqrestore(&atiixp_lock, flags);

	ide_dma_host_off(drive);
	}

	/**
	* atiixp_set_pio_mode - set host controller for PIO mode
	* @drive: drive
	* @pio: PIO mode number
	*
	* Set the interface PIO mode.
	*/

	static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
	{
	struct pci_dev *dev = drive->hwif->pci_dev;
	unsigned long flags;
	int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
	u32 pio_timing_data;
	u16 pio_mode_data;

	spin_lock_irqsave(&atiixp_lock, flags);

	pci_read_config_word(dev, ATIIXP_IDE_PIO_MODE, &pio_mode_data);
	pio_mode_data &= ~(0x07 << (drive->dn * 4));
	pio_mode_data \|= (pio << (drive->dn * 4));
	pci_write_config_word(dev, ATIIXP_IDE_PIO_MODE, pio_mode_data);

	pci_read_config_dword(dev, ATIIXP_IDE_PIO_TIMING, &pio_timing_data);
	pio_timing_data &= ~(0xff << timing_shift);
	pio_timing_data \|= (pio_timing[pio].recover_width << timing_shift) \|
	(pio_timing[pio].command_width << (timing_shift + 4));
	pci_write_config_dword(dev, ATIIXP_IDE_PIO_TIMING, pio_timing_data);

	spin_unlock_irqrestore(&atiixp_lock, flags);
	}

	/**
	* atiixp_set_dma_mode - set host controller for DMA mode
	* @drive: drive
	* @speed: DMA mode
	*
	* Set a ATIIXP host controller to the desired DMA mode. This involves
	* programming the right timing data into the PCI configuration space.
	*/

	static void atiixp_set_dma_mode(ide_drive_t *drive, const u8 speed)
	{
	struct pci_dev *dev = drive->hwif->pci_dev;
	unsigned long flags;
	int timing_shift = (drive->dn & 2) ? 16 : 0 + (drive->dn & 1) ? 0 : 8;
	u32 tmp32;
	u16 tmp16;

	if (speed < XFER_MW_DMA_0)
	return;

	spin_lock_irqsave(&atiixp_lock, flags);

	save_mdma_mode[drive->dn] = 0;
	if (speed >= XFER_UDMA_0) {
	pci_read_config_word(dev, ATIIXP_IDE_UDMA_MODE, &tmp16);
	tmp16 &= ~(0x07 << (drive->dn * 4));
	tmp16 \|= ((speed & 0x07) << (drive->dn * 4));
	pci_write_config_word(dev, ATIIXP_IDE_UDMA_MODE, tmp16);
	} else {
	if ((speed >= XFER_MW_DMA_0) && (speed <= XFER_MW_DMA_2)) {
	save_mdma_mode[drive->dn] = speed;
	pci_read_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, &tmp32);
	tmp32 &= ~(0xff << timing_shift);
	tmp32 \|= (mdma_timing[speed & 0x03].recover_width << timing_shift) \|
	(mdma_timing[speed & 0x03].command_width << (timing_shift + 4));
	pci_write_config_dword(dev, ATIIXP_IDE_MDMA_TIMING, tmp32);
	}
	}

	spin_unlock_irqrestore(&atiixp_lock, flags);
	}

	/**
	* init_hwif_atiixp - fill in the hwif for the ATIIXP
	* @hwif: IDE interface
	*
	* Set up the ide_hwif_t for the ATIIXP interface according to the
	* capabilities of the hardware.
	*/

	static void __devinit init_hwif_atiixp(ide_hwif_t *hwif)
	{
	u8 udma_mode = 0;
	u8 ch = hwif->channel;
	struct pci_dev *pdev = hwif->pci_dev;

	if (!hwif->irq)
	hwif->irq = ch ? 15 : 14;

	hwif->set_pio_mode = &atiixp_set_pio_mode;
	hwif->set_dma_mode = &atiixp_set_dma_mode;
	hwif->drives[0].autotune = 1;
	hwif->drives[1].autotune = 1;

	if (!hwif->dma_base)
	return;

	hwif->ultra_mask = 0x3f;
	hwif->mwdma_mask = 0x07;

	pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ch, &udma_mode);

	if ((udma_mode & 0x07) >= 0x04 \|\| (udma_mode & 0x70) >= 0x40)
	hwif->cbl = ATA_CBL_PATA80;
	else
	hwif->cbl = ATA_CBL_PATA40;

	hwif->dma_host_on = &atiixp_dma_host_on;
	hwif->dma_host_off = &atiixp_dma_host_off;
	}


	static ide_pci_device_t atiixp_pci_info[] __devinitdata = {
	{ /* 0 */
	.name = "ATIIXP",
	.init_hwif = init_hwif_atiixp,
	.autodma = AUTODMA,
	.enablebits = {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
	.host_flags = IDE_HFLAG_BOOTABLE,
	.pio_mask = ATA_PIO4,
	},{ /* 1 */
	.name = "SB600_PATA",
	.init_hwif = init_hwif_atiixp,
	.autodma = AUTODMA,
	.enablebits = {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
	.host_flags = IDE_HFLAG_SINGLE \| IDE_HFLAG_BOOTABLE,
	.pio_mask = ATA_PIO4,
	},
	};

	/**
	* atiixp_init_one - called when a ATIIXP is found
	* @dev: the atiixp device
	* @id: the matching pci id
	*
	* Called when the PCI registration layer (or the IDE initialization)
	* finds a device matching our IDE device tables.
	*/

	static int __devinit atiixp_init_one(struct pci_dev dev, const struct pci_device_id id)
	{
	return ide_setup_pci_device(dev, &atiixp_pci_info[id->driver_data]);
	}

	static const struct pci_device_id atiixp_pci_tbl[] = {
	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP200_IDE), 0 },
	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP300_IDE), 0 },
	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP400_IDE), 0 },
	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP600_IDE), 1 },
	{ PCI_VDEVICE(ATI, PCI_DEVICE_ID_ATI_IXP700_IDE), 0 },
	{ 0, },
	};
	MODULE_DEVICE_TABLE(pci, atiixp_pci_tbl);

	static struct pci_driver driver = {
	.name = "ATIIXP_IDE",
	.id_table = atiixp_pci_tbl,
	.probe = atiixp_init_one,
	};

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

	module_init(atiixp_ide_init);

	MODULE_AUTHOR("HUI YU");
	MODULE_DESCRIPTION("PCI driver module for ATI IXP IDE");
	MODULE_LICENSE("GPL");