linux-imx

/*

 * pata_atiixp.c    - ATI PATA for new ATA layer

 *            (C) 2005 Red Hat Inc

 *            (C) 2009-2010 Bartlomiej Zolnierkiewicz

 *

 * Based on

 *

 *  linux/drivers/ide/pci/atiixp.c  Version 0.01-bart2  Feb. 26, 2004

 *

 *  Copyright (C) 2003 ATI Inc. <hyu@ati.com>

 *  Copyright (C) 2004 Bartlomiej Zolnierkiewicz

 *

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/pci.h>

#include <linux/blkdev.h>

#include <linux/delay.h>

#include <scsi/scsi_host.h>

#include <linux/libata.h>

#include <linux/dmi.h>

​

#define DRV_NAME "pata_atiixp"

#define DRV_VERSION "0.4.6"

​

enum {

    ATIIXP_IDE_PIO_TIMING   = 0x40,

    ATIIXP_IDE_MWDMA_TIMING = 0x44,

    ATIIXP_IDE_PIO_CONTROL  = 0x48,

    ATIIXP_IDE_PIO_MODE = 0x4a,

    ATIIXP_IDE_UDMA_CONTROL = 0x54,

    ATIIXP_IDE_UDMA_MODE    = 0x56

};

​

static const struct dmi_system_id attixp_cable_override_dmi_table[] = {

    {

        /* Board has onboard PATA<->SATA converters */

        .ident = "MSI E350DM-E33",

        .matches = {

            DMI_MATCH(DMI_BOARD_VENDOR, "MSI"),

            DMI_MATCH(DMI_BOARD_NAME, "E350DM-E33(MS-7720)"),

        },

    },

    { }

};

​

static int atiixp_cable_detect(struct ata_port *ap)

{

    struct pci_dev *pdev = to_pci_dev(ap->host->dev);

    u8 udma;

​

    if (dmi_check_system(attixp_cable_override_dmi_table))

        return ATA_CBL_PATA40_SHORT;

​

    /* Hack from drivers/ide/pci. Really we want to know how to do the

       raw detection not play follow the bios mode guess */

    pci_read_config_byte(pdev, ATIIXP_IDE_UDMA_MODE + ap->port_no, &udma);

    if ((udma & 0x07) >= 0x04 || (udma & 0x70) >= 0x40)

        return  ATA_CBL_PATA80;

    return ATA_CBL_PATA40;

}

​