git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 | 1 | /* |
| 9bf4d676 | 2 | * arch/arm/mach-ixp4xx/ixdp425-pci.c |
| 1da177e4 LT |
3 | * |
| 4 | * IXDP425 board-level PCI initialization | |
| 5 | * | |
| 6 | * Copyright (C) 2002 Intel Corporation. | |
| 7 | * Copyright (C) 2003-2004 MontaVista Software, Inc. | |
| 8 | * | |
| 9 | * Maintainer: Deepak Saxena <dsaxena@plexity.net> | |
| 10 | * | |
| 11 | * This program is free software; you can redistribute it and/or modify | |
| 12 | * it under the terms of the GNU General Public License version 2 as | |
| 13 | * published by the Free Software Foundation. | |
| 14 | * | |
| 15 | */ | |
| 16 | ||
| 17 | #include <linux/kernel.h> | |
| 1da177e4 LT |
18 | #include <linux/pci.h> |
| 19 | #include <linux/init.h> | |
| 698dfe2b | 20 | #include <linux/irq.h> |
| 1da177e4 | 21 | #include <linux/delay.h> |
| 1da177e4 LT |
22 | #include <asm/mach/pci.h> |
| 23 | #include <asm/irq.h> | |
| a09e64fb | 24 | #include <mach/hardware.h> |
| 1da177e4 LT |
25 | #include <asm/mach-types.h> |
| 26 | ||
| 8d3fdf31 KH |
27 | #define MAX_DEV 4 |
| 28 | #define IRQ_LINES 4 | |
| 9bf4d676 KH |
29 | |
| 30 | /* PCI controller GPIO to IRQ pin mappings */ | |
| 8d3fdf31 KH |
31 | #define INTA 11 |
| 32 | #define INTB 10 | |
| 33 | #define INTC 9 | |
| 34 | #define INTD 8 | |
| 9bf4d676 | 35 | |
| 9bf4d676 | 36 | |
| 1da177e4 LT |
37 | void __init ixdp425_pci_preinit(void) |
| 38 | { | |
| 8d3fdf31 KH |
39 | set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); |
| 40 | set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); | |
| 41 | set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); | |
| 42 | set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); | |
| 1da177e4 LT |
43 | ixp4xx_pci_preinit(); |
| 44 | } | |
| 45 | ||
| 46 | static int __init ixdp425_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
| 47 | { | |
| 8d3fdf31 KH |
48 | static int pci_irq_table[IRQ_LINES] = { |
| 49 | IXP4XX_GPIO_IRQ(INTA), | |
| 50 | IXP4XX_GPIO_IRQ(INTB), | |
| 51 | IXP4XX_GPIO_IRQ(INTC), | |
| 52 | IXP4XX_GPIO_IRQ(INTD) | |
| 1da177e4 LT |
53 | }; |
| 54 | ||
| 8d3fdf31 KH |
55 | if (slot >= 1 && slot <= MAX_DEV && pin >= 1 && pin <= IRQ_LINES) |
| 56 | return pci_irq_table[(slot + pin - 2) % 4]; | |
| 1da177e4 | 57 | |
| 8d3fdf31 | 58 | return -1; |
| 1da177e4 LT |
59 | } |
| 60 | ||
| 61 | struct hw_pci ixdp425_pci __initdata = { | |
| 62 | .nr_controllers = 1, | |
| 63 | .preinit = ixdp425_pci_preinit, | |
| 64 | .swizzle = pci_std_swizzle, | |
| 65 | .setup = ixp4xx_setup, | |
| 66 | .scan = ixp4xx_scan_bus, | |
| 67 | .map_irq = ixdp425_map_irq, | |
| 68 | }; | |
| 69 | ||
| 70 | int __init ixdp425_pci_init(void) | |
| 71 | { | |
| 72 | if (machine_is_ixdp425() || machine_is_ixcdp1100() || | |
| 45fba084 | 73 | machine_is_ixdp465() || machine_is_kixrp435()) |
| 1da177e4 LT |
74 | pci_common_init(&ixdp425_pci); |
| 75 | return 0; | |
| 76 | } | |
| 77 | ||
| 78 | subsys_initcall(ixdp425_pci_init); |