coyote-pci.c

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/*
 * arch/arm/mach-ixp4xx/coyote-pci.c
 *
 * PCI setup routines for ADI Engineering Coyote platform
 *
 * Copyright (C) 2002 Jungo Software Technologies.
 * Copyright (C) 2003 MontaVista Softwrae, Inc.
 *
 * Maintainer: Deepak Saxena <[email protected]>
 *
 * 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.
 *
 */

#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach/pci.h>

#define SLOT0_DEVID 14
#define SLOT1_DEVID 15

/* PCI controller GPIO to IRQ pin mappings */
#define SLOT0_INTA  6
#define SLOT1_INTA  11

void __init coyote_pci_preinit(void)
{
    irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
    irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
    ixp4xx_pci_preinit();
}

static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
    if (slot == SLOT0_DEVID)
        return IXP4XX_GPIO_IRQ(SLOT0_INTA);
    else if (slot == SLOT1_DEVID)
        return IXP4XX_GPIO_IRQ(SLOT1_INTA);
    else return -1;
}

struct hw_pci coyote_pci __initdata = {
    .nr_controllers = 1,
    .ops        = &ixp4xx_ops,
    .preinit =        coyote_pci_preinit,
    .setup =          ixp4xx_setup,
    .map_irq =        coyote_map_irq,
};

int __init coyote_pci_init(void)
{
    if (machine_is_adi_coyote())
        pci_common_init(&coyote_pci);
    return 0;
}

subsys_initcall(coyote_pci_init);