| /* |
| * 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(const 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, |
| .ops = &ixp4xx_ops, |
| .preinit = dsmg600_pci_preinit, |
| .setup = ixp4xx_setup, |
| .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); |