1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/*
* arch/arm/mach-ixp4xx/avila-pci.c
*
* Gateworks Avila board-level PCI initialization
*
* Author: Michael-Luke Jones <mlj28@cam.ac.uk>
*
* Based on ixdp-pci.c
* Copyright (C) 2002 Intel Corporation.
* Copyright (C) 2003-2004 MontaVista Software, Inc.
*
* Maintainer: Deepak Saxena <dsaxena@plexity.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <asm/mach/pci.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
void __init avila_pci_preinit(void)
{
set_irq_type(IRQ_AVILA_PCI_INTA, IRQ_TYPE_LEVEL_LOW);
set_irq_type(IRQ_AVILA_PCI_INTB, IRQ_TYPE_LEVEL_LOW);
set_irq_type(IRQ_AVILA_PCI_INTC, IRQ_TYPE_LEVEL_LOW);
set_irq_type(IRQ_AVILA_PCI_INTD, IRQ_TYPE_LEVEL_LOW);
ixp4xx_pci_preinit();
}
static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
static int pci_irq_table[AVILA_PCI_IRQ_LINES] = {
IRQ_AVILA_PCI_INTA,
IRQ_AVILA_PCI_INTB,
IRQ_AVILA_PCI_INTC,
IRQ_AVILA_PCI_INTD
};
int irq = -1;
if (slot >= 1 &&
slot <= (machine_is_loft() ? LOFT_PCI_MAX_DEV : AVILA_PCI_MAX_DEV) &&
pin >= 1 && pin <= AVILA_PCI_IRQ_LINES) {
irq = pci_irq_table[(slot + pin - 2) % 4];
}
return irq;
}
struct hw_pci avila_pci __initdata = {
.nr_controllers = 1,
.preinit = avila_pci_preinit,
.swizzle = pci_std_swizzle,
.setup = ixp4xx_setup,
.scan = ixp4xx_scan_bus,
.map_irq = avila_map_irq,
};
int __init avila_pci_init(void)
{
if (machine_is_avila() || machine_is_loft())
pci_common_init(&avila_pci);
return 0;
}
subsys_initcall(avila_pci_init);
|
