LXR linux/arch/arm/mach-ixp4xx/coyote-pci.c

   1/*
   2 * arch/arm/mach-ixp4xx/coyote-pci.c
   3 *
   4 * PCI setup routines for ADI Engineering Coyote platform
   5 *
   6 * Copyright (C) 2002 Jungo Software Technologies.
   7 * Copyright (C) 2003 MontaVista Softwrae, Inc.
   8 *
   9 * Maintainer: Deepak Saxena <dsaxena@mvista.com>
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License version 2 as
  13 * published by the Free Software Foundation.
  14 *
  15 */
  16
  17#include <linux/kernel.h>
  18#include <linux/pci.h>
  19#include <linux/init.h>
  20#include <linux/irq.h>
  21#include <asm/mach-types.h>
  22#include <mach/hardware.h>
  23#include <asm/irq.h>
  24#include <asm/mach/pci.h>
  25
  26#define SLOT0_DEVID     14
  27#define SLOT1_DEVID     15
  28
  29/* PCI controller GPIO to IRQ pin mappings */
  30#define SLOT0_INTA      6
  31#define SLOT1_INTA      11
  32
  33void __init coyote_pci_preinit(void)
  34{
  35        irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
  36        irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
  37        ixp4xx_pci_preinit();
  38}
  39
  40static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  41{
  42        if (slot == SLOT0_DEVID)
  43                return IXP4XX_GPIO_IRQ(SLOT0_INTA);
  44        else if (slot == SLOT1_DEVID)
  45                return IXP4XX_GPIO_IRQ(SLOT1_INTA);
  46        else return -1;
  47}
  48
  49struct hw_pci coyote_pci __initdata = {
  50        .nr_controllers = 1,
  51        .preinit =        coyote_pci_preinit,
  52        .swizzle =        pci_std_swizzle,
  53        .setup =          ixp4xx_setup,
  54        .scan =           ixp4xx_scan_bus,
  55        .map_irq =        coyote_map_irq,
  56};
  57
  58int __init coyote_pci_init(void)
  59{
  60        if (machine_is_adi_coyote())
  61                pci_common_init(&coyote_pci);
  62        return 0;
  63}
  64
  65subsys_initcall(coyote_pci_init);
  66