Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/arch/arm/mach-footbridge/cats-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 | /* cats host-specific stuff */ | |
17 | static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 }; | |
18 | ||
19 | static int __init cats_map_irq(struct pci_dev *dev, u8 slot, u8 pin) | |
20 | { | |
21 | if (dev->irq >= 128) | |
22 | return dev->irq & 0x1f; | |
23 | ||
24 | if (dev->irq >= 1 && dev->irq <= 4) | |
25 | return irqmap_cats[dev->irq - 1]; | |
26 | ||
27 | if (dev->irq != 0) | |
28 | printk("PCI: device %02x:%02x has unknown irq line %x\n", | |
29 | dev->bus->number, dev->devfn, dev->irq); | |
30 | ||
31 | return -1; | |
32 | } | |
33 | ||
34 | /* | |
35 | * why not the standard PCI swizzle? does this prevent 4-port tulip | |
36 | * cards being used (ie, pci-pci bridge based cards)? | |
37 | */ | |
38 | static struct hw_pci cats_pci __initdata = { | |
39 | .swizzle = NULL, | |
40 | .map_irq = cats_map_irq, | |
41 | .nr_controllers = 1, | |
42 | .setup = dc21285_setup, | |
43 | .scan = dc21285_scan_bus, | |
44 | .preinit = dc21285_preinit, | |
45 | .postinit = dc21285_postinit, | |
46 | }; | |
47 | ||
cdea4606 | 48 | static int __init cats_pci_init(void) |
1da177e4 LT |
49 | { |
50 | if (machine_is_cats()) | |
51 | pci_common_init(&cats_pci); | |
52 | return 0; | |
53 | } | |
54 | ||
55 | subsys_initcall(cats_pci_init); |