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 set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW); 36 set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW); 37 ixp4xx_pci_preinit(); 38} 39 40static int __init coyote_map_irq(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