LXR linux-old/arch/arm/mach-footbridge/cats-pci.c

   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/hardware/dec21285.h>
  15
  16/* cats host-specific stuff */
  17static int irqmap_cats[] __initdata = { IRQ_PCI, IRQ_IN0, IRQ_IN1, IRQ_IN3 };
  18
  19static 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
  34struct hw_pci cats_pci __initdata = {
  35        .setup_resources        = dc21285_setup_resources,
  36        .init                   = dc21285_init,
  37        .mem_offset             = DC21285_PCI_MEM,
  38        .swizzle                = no_swizzle,
  39        .map_irq                = cats_map_irq,
  40};
  41