1 /*
2  * linux/arch/arm/mach-footbridge/netwinder-pci.c
3  *
4  * PCI bios-type initialisation for PCI machines
5  *
6  * Bits taken from various places.
7  */
8 #include <linux/kernel.h>
9 #include <linux/pci.h>
10 #include <linux/init.h>
11 
12 #include <asm/irq.h>
13 #include <asm/mach/pci.h>
14 #include <asm/mach-types.h>
15 
16 /*
17  * We now use the slot ID instead of the device identifiers to select
18  * which interrupt is routed where.
19  */
20 static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
21 {
22 	switch (slot) {
23 	case 0:  /* host bridge */
24 		return 0;
25 
26 	case 9:  /* CyberPro */
27 		return IRQ_NETWINDER_VGA;
28 
29 	case 10: /* DC21143 */
30 		return IRQ_NETWINDER_ETHER100;
31 
32 	case 12: /* Winbond 553 */
33 		return IRQ_ISA_HARDDISK1;
34 
35 	case 13: /* Winbond 89C940F */
36 		return IRQ_NETWINDER_ETHER10;
37 
38 	default:
39 		printk(KERN_ERR "PCI: unknown device in slot %s\n",
40 			pci_name(dev));
41 		return 0;
42 	}
43 }
44 
45 static struct hw_pci netwinder_pci __initdata = {
46 	.swizzle		= pci_std_swizzle,
47 	.map_irq		= netwinder_map_irq,
48 	.nr_controllers		= 1,
49 	.setup			= dc21285_setup,
50 	.scan			= dc21285_scan_bus,
51 	.preinit		= dc21285_preinit,
52 	.postinit		= dc21285_postinit,
53 };
54 
55 static int __init netwinder_pci_init(void)
56 {
57 	if (machine_is_netwinder())
58 		pci_common_init(&netwinder_pci);
59 	return 0;
60 }
61 
62 subsys_initcall(netwinder_pci_init);
63