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/arch/sh/drivers/pci/fixups-sh03.c

https://bitbucket.org/evzijst/gittest
C | 61 lines | 47 code | 9 blank | 5 comment | 6 complexity | d3f0a5b1b78b6305cf119ee51336b18d MD5 | raw file
 1#include <linux/kernel.h>
 2#include <linux/init.h>
 3#include <linux/types.h>
 4#include <linux/pci.h>
 5
 6/*
 7 * 	IRQ functions
 8 */
 9
10int __init pcibios_map_platform_irq(u8 slot, u8 pin, struct pci_dev *dev)
11{
12	int irq;
13
14	if (dev->bus->number == 0) {
15		switch (slot) {
16		case 4: return 5;	/* eth0       */
17		case 8: return 5;	/* eth1       */
18		case 6: return 2;	/* PCI bridge */
19		default:
20                	printk("PCI: Bad IRQ mapping request for slot %d\n", slot);
21                	return 2;
22		}
23	} else {
24		switch (pin) {
25		case 0:   irq =  2; break;
26		case 1:   irq =  2; break;
27		case 2:   irq =  2; break;
28		case 3:   irq =  2; break;
29		case 4:   irq =  2; break;
30		default:  irq = -1; break;
31		}
32	}
33	return irq;
34}
35
36static u8 __init sh03_no_swizzle(struct pci_dev *dev, u8 *pin)
37{
38	/* no swizzling */
39	return PCI_SLOT(dev->devfn);
40}
41
42static int sh03_pci_lookup_irq(struct pci_dev *dev, u8 slot, u8 pin)
43{
44	int irq = -1;
45
46	/* now lookup the actual IRQ on a platform specific basis (pci-'platform'.c) */
47	irq = pcibios_map_platform_irq(slot, pin, dev);
48	if( irq < 0 ) {
49		pr_debug("PCI: Error mapping IRQ on device %s\n", pci_name(dev));
50		return irq;
51	}
52
53	pr_debug("Setting IRQ for slot %s to %d\n", pci_name(dev), irq);
54
55	return irq;
56}
57
58void __init pcibios_fixup_irqs(void)
59{
60	pci_fixup_irqs(sh03_no_swizzle, sh03_pci_lookup_irq);
61}