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/*

 * linux/include/asm-arm/arch-sa1100/ide.h

 *

 * Copyright (c) 1998 Hugo Fiennes & Nicolas Pitre

 *

 * 26-feb-2002: Add support for 2d3D SA-1110 Development board

 *              Abraham van der Merwe <abraham@2d3d.co.za>

 *

 * 18-aug-2000: Cleanup by Erik Mouw (J.A.K.Mouw@its.tudelft.nl)

 *              Get rid of the special ide_init_hwif_ports() functions

 *              and make a generalised function that can be used by all

 *              architectures.

 */

#include <linux/config.h>

#include <asm/irq.h>

#include <asm/hardware.h>

#include <asm/mach-types.h>

/*

 * Set up a hw structure for a specified data port, control port and IRQ.

 * This should follow whatever the default interface uses.

 */

static __inline__ void

ide_init_hwif_ports(hw_regs_t *hw, int data_port, int ctrl_port, int *irq)

{

        ide_ioreg_t reg;

        int i;

        int regincr = 1;

        /* The Empeg board has the first two address lines unused */

        if (machine_is_empeg())

                regincr = 1 << 2;

        /* The LART doesn't use A0 for IDE */

        if (machine_is_lart())

                regincr = 1 << 1;

        /* Frodo has the first 14 address lines unused */

        if (machine_is_frodo())

                regincr = 1 << 14;

        memset(hw, 0, sizeof(*hw));

        reg = (ide_ioreg_t)data_port;

        for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) {

                hw->io_ports[i] = reg;

                reg += regincr;

        }

        hw->io_ports[IDE_CONTROL_OFFSET] = (ide_ioreg_t) ctrl_port;

        if (irq)

                *irq = 0;

}

/*

 * This registers the standard ports for this architecture with the IDE

 * driver.

 */

static __inline__ void

ide_init_default_hwifs(void)

{

    if( machine_is_empeg() ){

#ifdef CONFIG_SA1100_EMPEG

        hw_regs_t hw;

        /* First, do the SA1100 setup */

        /* PCMCIA IO space */

        MECR=0x21062106;

        /* Issue 3 is much neater than issue 2 */

        GPDR&=~(EMPEG_IDE1IRQ|EMPEG_IDE2IRQ);

        /* Interrupts on rising edge: lines are inverted before they get to

           the SA */

        set_GPIO_IRQ_edge( (EMPEG_IDE1IRQ|EMPEG_IDE2IRQ), GPIO_FALLING_EDGE );

        /* Take hard drives out of reset */

        GPSR=(EMPEG_IDERESET);

        /* Sonja and her successors have two IDE ports. */

        /* MAC 23/4/1999, swap these round so that the left hand

           hard disk is hda when viewed from the front. This

           doesn't match the silkscreen however. */

        ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x40, PCMCIA_IO_0_BASE + 0x78, NULL);

        hw.irq = EMPEG_IRQ_IDE2;

        ide_register_hw(&hw, NULL);

        ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x00, PCMCIA_IO_0_BASE + 0x38, NULL);

        hw.irq = ,EMPEG_IRQ_IDE1;

        ide_register_hw(&hw, NULL);

#endif

    }

    else if( machine_is_victor() ){

#ifdef CONFIG_SA1100_VICTOR

        hw_regs_t hw;

        /* Enable appropriate GPIOs as interrupt lines */

        GPDR &= ~GPIO_GPIO7;

        set_GPIO_IRQ_edge( GPIO_GPIO7, GPIO_RISING_EDGE );

        /* set the pcmcia interface timing */

        MECR = 0x00060006;

        ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x1f0, PCMCIA_IO_0_BASE + 0x3f6, NULL);

        hw.irq = IRQ_GPIO7;

        ide_register_hw(&hw, NULL);

#endif

    }

    else if (machine_is_lart()) {

#ifdef CONFIG_SA1100_LART

        hw_regs_t hw;

        /* Enable GPIO as interrupt line */

        GPDR &= ~LART_GPIO_IDE;

        set_GPIO_IRQ_edge(LART_GPIO_IDE, GPIO_RISING_EDGE);

        /* set PCMCIA interface timing */

        MECR = 0x00060006;

        /* init the interface */

        ide_init_hwif_ports(&hw, PCMCIA_IO_0_BASE + 0x0000, PCMCIA_IO_0_BASE + 0x1000, NULL);

        hw.irq = LART_IRQ_IDE;

        ide_register_hw(&hw, NULL);

#endif

    }

        else if (machine_is_frodo ()) {

#ifdef CONFIG_SA1100_FRODO

                hw_regs_t hw;

                /* enable GPIO as interrupt line */

                GPDR &= ~FRODO_IDE_GPIO;

                set_GPIO_IRQ_edge (FRODO_IDE_GPIO,GPIO_RISING_EDGE);

                /* init the interface */

                ide_init_hwif_ports (&hw,FRODO_IDE_DATA,FRODO_IDE_CTRL,NULL);

                hw.irq = FRODO_IDE_IRQ;

                ide_register_hw (&hw,NULL);

#endif

        }

}