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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-ixp4xx/coyote-pci.c
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/*

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 * arch/arm/mach-ixp4xx/coyote-pci.c

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 *

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 * PCI setup routines for ADI Engineering Coyote platform

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 *

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 * Copyright (C) 2002 Jungo Software Technologies.

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 * Copyright (C) 2003 MontaVista Softwrae, Inc.

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 *

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 * Maintainer: Deepak Saxena <[email protected]>

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 *

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

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

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 * published by the Free Software Foundation.

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 *

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 */

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#include <linux/kernel.h>

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#include <linux/pci.h>

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#include <linux/init.h>

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#include <linux/irq.h>

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#include <asm/mach-types.h>

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#include <mach/hardware.h>

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#include <asm/irq.h>

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#include <asm/mach/pci.h>

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#define SLOT0_DEVID	14

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#define SLOT1_DEVID	15

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/* PCI controller GPIO to IRQ pin mappings */

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#define SLOT0_INTA	6

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#define SLOT1_INTA	11

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void __init coyote_pci_preinit(void)

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{

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	irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);

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	irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);

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	ixp4xx_pci_preinit();

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}

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static int __init coyote_map_irq(struct pci_dev *dev, u8 slot, u8 pin)

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{

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	if (slot == SLOT0_DEVID)

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		return IXP4XX_GPIO_IRQ(SLOT0_INTA);

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	else if (slot == SLOT1_DEVID)

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		return IXP4XX_GPIO_IRQ(SLOT1_INTA);

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	else return -1;

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}

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struct hw_pci coyote_pci __initdata = {

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	.nr_controllers = 1,

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	.preinit =        coyote_pci_preinit,

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	.swizzle =        pci_std_swizzle,

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	.setup =          ixp4xx_setup,

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	.scan =           ixp4xx_scan_bus,

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	.map_irq =        coyote_map_irq,

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};

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int __init coyote_pci_init(void)

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{

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	if (machine_is_adi_coyote())

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		pci_common_init(&coyote_pci);

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	return 0;

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}

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subsys_initcall(coyote_pci_init);

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