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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 | ||
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18 | #include <linux/pci.h> |
19 | #include <linux/init.h> | |
698dfe2b | 20 | #include <linux/irq.h> |
3145d8a6 RW |
21 | |
22 | #include <asm/mach/pci.h> | |
23 | #include <asm/mach-types.h> | |
24 | ||
25 | void __init nas100d_pci_preinit(void) | |
26 | { | |
6cab4860 DES |
27 | set_irq_type(IRQ_NAS100D_PCI_INTA, IRQ_TYPE_LEVEL_LOW); |
28 | set_irq_type(IRQ_NAS100D_PCI_INTB, IRQ_TYPE_LEVEL_LOW); | |
29 | set_irq_type(IRQ_NAS100D_PCI_INTC, IRQ_TYPE_LEVEL_LOW); | |
30 | set_irq_type(IRQ_NAS100D_PCI_INTD, IRQ_TYPE_LEVEL_LOW); | |
31 | set_irq_type(IRQ_NAS100D_PCI_INTE, IRQ_TYPE_LEVEL_LOW); | |
3145d8a6 | 32 | |
3145d8a6 RW |
33 | ixp4xx_pci_preinit(); |
34 | } | |
35 | ||
36 | static int __init nas100d_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
37 | { | |
38 | static int pci_irq_table[NAS100D_PCI_MAX_DEV][NAS100D_PCI_IRQ_LINES] = | |
39 | { | |
40 | { IRQ_NAS100D_PCI_INTA, -1, -1 }, | |
41 | { IRQ_NAS100D_PCI_INTB, -1, -1 }, | |
42 | { IRQ_NAS100D_PCI_INTC, IRQ_NAS100D_PCI_INTD, IRQ_NAS100D_PCI_INTE }, | |
43 | }; | |
44 | ||
45 | int irq = -1; | |
46 | ||
47 | if (slot >= 1 && slot <= NAS100D_PCI_MAX_DEV && | |
48 | pin >= 1 && pin <= NAS100D_PCI_IRQ_LINES) | |
49 | irq = pci_irq_table[slot-1][pin-1]; | |
50 | ||
51 | return irq; | |
52 | } | |
53 | ||
54 | struct hw_pci __initdata nas100d_pci = { | |
55 | .nr_controllers = 1, | |
56 | .preinit = nas100d_pci_preinit, | |
57 | .swizzle = pci_std_swizzle, | |
58 | .setup = ixp4xx_setup, | |
59 | .scan = ixp4xx_scan_bus, | |
60 | .map_irq = nas100d_map_irq, | |
61 | }; | |
62 | ||
63 | int __init nas100d_pci_init(void) | |
64 | { | |
65 | if (machine_is_nas100d()) | |
66 | pci_common_init(&nas100d_pci); | |
67 | ||
68 | return 0; | |
69 | } | |
70 | ||
71 | subsys_initcall(nas100d_pci_init); |