projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3145d8a6 RW |
1 | /* |
| 2 | * arch/arm/mach-ixp4xx/nas100d-pci.c | |
| 3 | * | |
| 4 | * NAS 100d board-level PCI initialization | |
| 5 | * | |
| 6 | * based on ixdp425-pci.c: | |
| 7 | * Copyright (C) 2002 Intel Corporation. | |
| 8 | * Copyright (C) 2003-2004 MontaVista Software, Inc. | |
| 9 | * | |
| 10 | * Maintainer: http://www.nslu2-linux.org/ | |
| 11 | * | |
| 12 | * This program is free software; you can redistribute it and/or modify | |
| 13 | * it under the terms of the GNU General Public License version 2 as | |
| 14 | * published by the Free Software Foundation. | |
| 15 | * | |
| 16 | */ | |
| 17 | ||
| 3145d8a6 RW |
18 | #include <linux/pci.h> |
| 19 | #include <linux/init.h> | |
| 698dfe2b | 20 | #include <linux/irq.h> |
| 3145d8a6 RW |
21 | #include <asm/mach/pci.h> |
| 22 | #include <asm/mach-types.h> | |
| 23 | ||
| 8d3fdf31 KH |
24 | #define MAX_DEV 3 |
| 25 | #define IRQ_LINES 3 | |
| 23fa6846 KH |
26 | |
| 27 | /* PCI controller GPIO to IRQ pin mappings */ | |
| 8d3fdf31 KH |
28 | #define INTA 11 |
| 29 | #define INTB 10 | |
| 30 | #define INTC 9 | |
| 31 | #define INTD 8 | |
| 32 | #define INTE 7 | |
| 23fa6846 | 33 | |
| 3145d8a6 RW |
34 | void __init nas100d_pci_preinit(void) |
| 35 | { | |
| 6845664a TG |
36 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); |
| 37 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); | |
| 38 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); | |
| 39 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); | |
| 40 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTE), IRQ_TYPE_LEVEL_LOW); | |
| 3145d8a6 RW |
41 | ixp4xx_pci_preinit(); |
| 42 | } | |
| 43 | ||
| d5341942 | 44 | static int __init nas100d_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
| 3145d8a6 | 45 | { |
| 8d3fdf31 KH |
46 | static int pci_irq_table[MAX_DEV][IRQ_LINES] = { |
| 47 | { IXP4XX_GPIO_IRQ(INTA), -1, -1 }, | |
| 48 | { IXP4XX_GPIO_IRQ(INTB), -1, -1 }, | |
| 49 | { IXP4XX_GPIO_IRQ(INTC), IXP4XX_GPIO_IRQ(INTD), | |
| 50 | IXP4XX_GPIO_IRQ(INTE) }, | |
| 3145d8a6 RW |
51 | }; |
| 52 | ||
| 8d3fdf31 KH |
53 | if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) |
| 54 | return pci_irq_table[slot - 1][pin - 1]; | |
| 3145d8a6 | 55 | |
| 8d3fdf31 | 56 | return -1; |
| 3145d8a6 RW |
57 | } |
| 58 | ||
| 59 | struct hw_pci __initdata nas100d_pci = { | |
| 60 | .nr_controllers = 1, | |
| 61 | .preinit = nas100d_pci_preinit, | |
| 62 | .swizzle = pci_std_swizzle, | |
| 63 | .setup = ixp4xx_setup, | |
| 64 | .scan = ixp4xx_scan_bus, | |
| 65 | .map_irq = nas100d_map_irq, | |
| 66 | }; | |
| 67 | ||
| 68 | int __init nas100d_pci_init(void) | |
| 69 | { | |
| 70 | if (machine_is_nas100d()) | |
| 71 | pci_common_init(&nas100d_pci); | |
| 72 | ||
| 73 | return 0; | |
| 74 | } | |
| 75 | ||
| 76 | subsys_initcall(nas100d_pci_init); |