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/*

 *  linux/drivers/ide/pci/rz1000.c      Version 0.06    January 12, 2003

 *

 *  Copyright (C) 1995-1998  Linus Torvalds & author (see below)

 */

/*

 *  Principal Author:  mlord@pobox.com (Mark Lord)

 *

 *  See linux/MAINTAINERS for address of current maintainer.

 *

 *  This file provides support for disabling the buggy read-ahead

 *  mode of the RZ1000 IDE chipset, commonly used on Intel motherboards.

 *

 *  Dunno if this fixes both ports, or only the primary port (?).

 */

#undef REALLY_SLOW_IO           /* most systems can safely undef this */

#include <linux/config.h> /* for CONFIG_BLK_DEV_IDEPCI */

#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/pci.h>

#include <linux/ide.h>

#include <linux/init.h>

#include <asm/io.h>

#include "rz1000.h"

static void __init init_hwif_rz1000 (ide_hwif_t *hwif)

{

        u16 reg;

        struct pci_dev *dev = hwif->pci_dev;

        hwif->chipset = ide_rz1000;

        if (!pci_read_config_word (dev, 0x40, &reg) &&

            !pci_write_config_word(dev, 0x40, reg & 0xdfff)) {

                printk(KERN_INFO "%s: disabled chipset read-ahead "

                        "(buggy RZ1000/RZ1001)\n", hwif->name);

        } else {

                hwif->serialized = 1;

                hwif->drives[0].no_unmask = 1;

                hwif->drives[1].no_unmask = 1;

                printk(KERN_INFO "%s: serialized, disabled unmasking "

                        "(buggy RZ1000/RZ1001)\n", hwif->name);

        }

}

extern void ide_setup_pci_device(struct pci_dev *, ide_pci_device_t *);

static int __devinit rz1000_init_one(struct pci_dev *dev, const struct pci_device_id *id)

{

        ide_pci_device_t *d = &rz1000_chipsets[id->driver_data];

        if (dev->device != d->device)

                BUG();

        ide_setup_pci_device(dev, d);

        MOD_INC_USE_COUNT;

        return 0;

}

static struct pci_device_id rz1000_pci_tbl[] __devinitdata = {

        { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},

        { PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},

        { 0, },

};

static struct pci_driver driver = {

        .name           = "RZ1000 IDE",

        .id_table       = rz1000_pci_tbl,

        .probe          = rz1000_init_one,

};

static int rz1000_ide_init(void)

{

        return ide_pci_register_driver(&driver);

}

static void rz1000_ide_exit(void)

{

        ide_pci_unregister_driver(&driver);

}

module_init(rz1000_ide_init);

module_exit(rz1000_ide_exit);

MODULE_AUTHOR("Andre Hedrick");

MODULE_DESCRIPTION("PCI driver module for RZ1000 IDE");

MODULE_LICENSE("GPL");

EXPORT_NO_SYMBOLS;