linux-imx

/*

 * pata-cs5530.c    - CS5530 PATA for new ATA layer

 *            (C) 2005 Red Hat Inc

 *

 * based upon cs5530.c by Mark Lord.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * Loosely based on the piix & svwks drivers.

 *

 * Documentation:

 *  Available from AMD web site.

 */

​

#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_cs5530"

#define DRV_VERSION "0.7.4"

​

static void __iomem *cs5530_port_base(struct ata_port *ap)

{

    unsigned long bmdma = (unsigned long)ap->ioaddr.bmdma_addr;

​

    return (void __iomem *)((bmdma & ~0x0F) + 0x20 + 0x10 * ap->port_no);

}

​

/**

 *  cs5530_set_piomode      -   PIO setup

 *  @ap: ATA interface

 *  @adev: device on the interface

 *

 *  Set our PIO requirements. This is fairly simple on the CS5530

 *  chips.

 */

​

static void cs5530_set_piomode(struct ata_port *ap, struct ata_device *adev)

{

    static const unsigned int cs5530_pio_timings[2][5] = {

        {0x00009172, 0x00012171, 0x00020080, 0x00032010, 0x00040010},

        {0xd1329172, 0x71212171, 0x30200080, 0x20102010, 0x00100010}

    };

    void __iomem *base = cs5530_port_base(ap);

    u32 tuning;

    int format;

​