/* * arch/arm/mach-ixp4xx/ixdp425-pci.c * * IXDP425 board-level PCI initialization * * Copyright (C) 2002 Intel Corporation. * Copyright (C) 2003-2004 MontaVista Software, Inc. * * Maintainer: Deepak Saxena <dsaxena@plexity.net> * * 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 <linux/delay.h> #include <asm/mach/pci.h> #include <asm/irq.h> #include <mach/hardware.h> #include <asm/mach-types.h> #define MAX_DEV 4 #define IRQ_LINES 4 /* PCI controller GPIO to IRQ pin mappings */ #define INTA 11 #define INTB 10 #define INTC 9 #define INTD 8 void __init ixdp425_pci_preinit(void) { set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); ixp4xx_pci_preinit(); } static int __init ixdp425_map_irq(struct pci_dev *dev, u8 slot, u8 pin) { static int pci_irq_table[IRQ_LINES] = { IXP4XX_GPIO_IRQ(INTA), IXP4XX_GPIO_IRQ(INTB), IXP4XX_GPIO_IRQ(INTC), IXP4XX_GPIO_IRQ(INTD) }; if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) return pci_irq_table[(slot + pin - 2) % 4]; return -1; } struct hw_pci ixdp425_pci __initdata = { .nr_controllers = 1, .preinit = ixdp425_pci_preinit, .swizzle = pci_std_swizzle, .setup = ixp4xx_setup, .scan = ixp4xx_scan_bus, .map_irq = ixdp425_map_irq, }; int __init ixdp425_pci_init(void) { if (machine_is_ixdp425() || machine_is_ixcdp1100() || machine_is_ixdp465() || machine_is_kixrp435()) pci_common_init(&ixdp425_pci); return 0; } subsys_initcall(ixdp425_pci_init);