linux-imx

/*

 * pata_cmd64x.c    - CMD64x PATA for new ATA layer

 *            (C) 2005 Red Hat Inc

 *            Alan Cox <alan@lxorguk.ukuu.org.uk>

 *            (C) 2009-2010 Bartlomiej Zolnierkiewicz

 *            (C) 2012 MontaVista Software, LLC <source@mvista.com>

 *

 * Based upon

 * linux/drivers/ide/pci/cmd64x.c       Version 1.30    Sept 10, 2002

 *

 * cmd64x.c: Enable interrupts at initialization time on Ultra/PCI machines.

 *           Note, this driver is not used at all on other systems because

 *           there the "BIOS" has done all of the following already.

 *           Due to massive hardware bugs, UltraDMA is only supported

 *           on the 646U2 and not on the 646U.

 *

 * Copyright (C) 1998       Eddie C. Dost  (ecd@skynet.be)

 * Copyright (C) 1998       David S. Miller (davem@redhat.com)

 *

 * Copyright (C) 1999-2002  Andre Hedrick <andre@linux-ide.org>

 *

 * TODO

 *  Testing work

 */

​

#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>

​

#define DRV_NAME "pata_cmd64x"

#define DRV_VERSION "0.2.18"

​

/*

 * CMD64x specific registers definition.

 */

​

enum {

    CFR         = 0x50,

        CFR_INTR_CH0  = 0x04,

    CNTRL       = 0x51,

        CNTRL_CH0     = 0x04,

        CNTRL_CH1     = 0x08,

    CMDTIM      = 0x52,

    ARTTIM0     = 0x53,

    DRWTIM0     = 0x54,

    ARTTIM1     = 0x55,

    DRWTIM1     = 0x56,

    ARTTIM23    = 0x57,

        ARTTIM23_DIS_RA2  = 0x04,

        ARTTIM23_DIS_RA3  = 0x08,

        ARTTIM23_INTR_CH1 = 0x10,

    DRWTIM2     = 0x58,

    BRST        = 0x59,

    DRWTIM3     = 0x5b,

    BMIDECR0    = 0x70,

    MRDMODE     = 0x71,

        MRDMODE_INTR_CH0 = 0x04,

        MRDMODE_INTR_CH1 = 0x08,

    BMIDESR0    = 0x72,