/* * DSM-G600 board-level PCI initialization * * Copyright (C) 2006 Tower Technologies * Author: Alessandro Zummo <a.zummo@towertech.it> * * based on ixdp425-pci.c: * Copyright (C) 2002 Intel Corporation. * Copyright (C) 2003-2004 MontaVista Software, Inc. * * Maintainer: http://www.nslu2-linux.org/ * * 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/pci.h> #include <linux/init.h> #include <linux/irq.h> #include <asm/mach/pci.h> #include <asm/mach-types.h> #define MAX_DEV 4 #define IRQ_LINES 3 /* PCI controller GPIO to IRQ pin mappings */ #define INTA 11 #define INTB 10 #define INTC 9 #define INTD 8 #define INTE 7 #define INTF 6 void __init dsmg600_pci_preinit(void) { irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW); irq_set_irq_type(IXP4XX_GPIO_IRQ(INTF), IRQ_TYPE_LEVEL_LOW); ixp4xx_pci_preinit(); } static int __init dsmg600_map_irq(struct pci_dev *dev, u8 slot, u8 pin) { static int pci_irq_table[MAX_DEV][IRQ_LINES] = { { IXP4XX_GPIO_IRQ(INTE), -1, -1 }, { IXP4XX_GPIO_IRQ(INTA), -1, -1 }, { IXP4XX_GPIO_IRQ(INTB), IXP4XX_GPIO_IRQ(INTC), IXP4XX_GPIO_IRQ(INTD) }, { IXP4XX_GPIO_IRQ(INTF), -1, -1 }, }; if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) return pci_irq_table[slot - 1][pin - 1]; return -1; } struct hw_pci __initdata dsmg600_pci = { .nr_controllers = 1, .preinit = dsmg600_pci_preinit, .swizzle = pci_std_swizzle, .setup = ixp4xx_setup, .scan = ixp4xx_scan_bus, .map_irq = dsmg600_map_irq, }; int __init dsmg600_pci_init(void) { if (machine_is_dsmg600()) pci_common_init(&dsmg600_pci); return 0; } subsys_initcall(dsmg600_pci_init);