1 /*
2 * arch/arm/mach-ixp4xx/coyote-pci.c
3 *
4 * PCI setup routines for ADI Engineering Coyote platform
5 *
6 * Copyright (C) 2002 Jungo Software Technologies.
7 * Copyright (C) 2003 MontaVista Softwrae, Inc.
8 *
9 * Maintainer: Deepak Saxena <dsaxena@mvista.com>
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>
18 #include <linux/pci.h>
19 #include <linux/init.h>
20 #include <linux/irq.h>
21 #include <asm/mach-types.h>
22 #include <mach/hardware.h>
23 #include <asm/irq.h>
24 #include <asm/mach/pci.h>
25
26 #define SLOT0_DEVID 14
27 #define SLOT1_DEVID 15
28
29 /* PCI controller GPIO to IRQ pin mappings */
30 #define SLOT0_INTA 6
31 #define SLOT1_INTA 11
32
coyote_pci_preinit(void)33 void __init coyote_pci_preinit(void)
34 {
35 irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
36 irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
37 ixp4xx_pci_preinit();
38 }
39
coyote_map_irq(struct pci_dev * dev,u8 slot,u8 pin)40 static int __init coyote_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
41 {
42 if (slot == SLOT0_DEVID)
43 return IXP4XX_GPIO_IRQ(SLOT0_INTA);
44 else if (slot == SLOT1_DEVID)
45 return IXP4XX_GPIO_IRQ(SLOT1_INTA);
46 else return -1;
47 }
48
49 struct hw_pci coyote_pci __initdata = {
50 .nr_controllers = 1,
51 .preinit = coyote_pci_preinit,
52 .swizzle = pci_std_swizzle,
53 .setup = ixp4xx_setup,
54 .scan = ixp4xx_scan_bus,
55 .map_irq = coyote_map_irq,
56 };
57
coyote_pci_init(void)58 int __init coyote_pci_init(void)
59 {
60 if (machine_is_adi_coyote())
61 pci_common_init(&coyote_pci);
62 return 0;
63 }
64
65 subsys_initcall(coyote_pci_init);
66