Commit | Line | Data |
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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 | { | |
6845664a TG |
39 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTA), IRQ_TYPE_LEVEL_LOW); |
40 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTB), IRQ_TYPE_LEVEL_LOW); | |
41 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTC), IRQ_TYPE_LEVEL_LOW); | |
42 | irq_set_irq_type(IXP4XX_GPIO_IRQ(INTD), IRQ_TYPE_LEVEL_LOW); | |
1da177e4 LT |
43 | ixp4xx_pci_preinit(); |
44 | } | |
45 | ||
d5341942 | 46 | static int __init ixdp425_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
1da177e4 | 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, | |
c23bfc38 | 63 | .ops = &ixp4xx_ops, |
1da177e4 | 64 | .preinit = ixdp425_pci_preinit, |
1da177e4 | 65 | .setup = ixp4xx_setup, |
1da177e4 LT |
66 | .map_irq = ixdp425_map_irq, |
67 | }; | |
68 | ||
69 | int __init ixdp425_pci_init(void) | |
70 | { | |
71 | if (machine_is_ixdp425() || machine_is_ixcdp1100() || | |
45fba084 | 72 | machine_is_ixdp465() || machine_is_kixrp435()) |
1da177e4 LT |
73 | pci_common_init(&ixdp425_pci); |
74 | return 0; | |
75 | } | |
76 | ||
77 | subsys_initcall(ixdp425_pci_init); |