2 * DSM-G600 board-level PCI initialization
4 * Copyright (C) 2006 Tower Technologies
5 * Author: Alessandro Zummo <a.zummo@towertech.it>
7 * based on ixdp425-pci.c:
8 * Copyright (C) 2002 Intel Corporation.
9 * Copyright (C) 2003-2004 MontaVista Software, Inc.
11 * Maintainer: http://www.nslu2-linux.org/
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
19 #include <linux/pci.h>
20 #include <linux/init.h>
21 #include <linux/irq.h>
22 #include <asm/mach/pci.h>
23 #include <asm/mach-types.h>
28 /* PCI controller GPIO to IRQ pin mappings */
36 void __init dsmg600_pci_preinit(void)
38 irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW);
39 irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW);
40 irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW);
41 irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW);
42 irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW);
43 irq_set_irq_type(IXP4XX_GPIO_IRQ(INTF), IRQ_TYPE_LEVEL_LOW);
47 static int __init dsmg600_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
49 static int pci_irq_table[MAX_DEV][IRQ_LINES] = {
50 { IXP4XX_GPIO_IRQ(INTE), -1, -1 },
51 { IXP4XX_GPIO_IRQ(INTA), -1, -1 },
52 { IXP4XX_GPIO_IRQ(INTB), IXP4XX_GPIO_IRQ(INTC),
53 IXP4XX_GPIO_IRQ(INTD) },
54 { IXP4XX_GPIO_IRQ(INTF), -1, -1 },
57 if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES)
58 return pci_irq_table[slot - 1][pin - 1];
63 struct hw_pci __initdata dsmg600_pci = {
66 .preinit = dsmg600_pci_preinit,
67 .setup = ixp4xx_setup,
68 .map_irq = dsmg600_map_irq,
71 int __init dsmg600_pci_init(void)
73 if (machine_is_dsmg600())
74 pci_common_init(&dsmg600_pci);
79 subsys_initcall(dsmg600_pci_init);