2 * linux/arch/arm/mach-footbridge/cats-pci.c
4 * PCI bios-type initialisation for PCI machines
6 * Bits taken from various places.
8 #include <linux/kernel.h>
10 #include <linux/init.h>
13 #include <asm/mach/pci.h>
14 #include <asm/mach-types.h>
16 /* cats host-specific stuff */
17 static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 };
19 static int __init cats_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
22 return -1; /* not a valid interrupt. */
25 return dev->irq & 0x1f;
27 if (dev->irq >= 1 && dev->irq <= 4)
28 return irqmap_cats[dev->irq - 1];
31 printk("PCI: device %02x:%02x has unknown irq line %x\n",
32 dev->bus->number, dev->devfn, dev->irq);
38 * why not the standard PCI swizzle? does this prevent 4-port tulip
39 * cards being used (ie, pci-pci bridge based cards)?
41 static struct hw_pci cats_pci __initdata = {
43 .map_irq = cats_map_irq,
45 .setup = dc21285_setup,
46 .scan = dc21285_scan_bus,
47 .preinit = dc21285_preinit,
48 .postinit = dc21285_postinit,
51 static int __init cats_pci_init(void)
53 if (machine_is_cats())
54 pci_common_init(&cats_pci);
58 subsys_initcall(cats_pci_init);