arch/arm/mach-footbridge/ebsa285-pci.c

   1 /*
   2  * linux/arch/arm/mach-footbridge/ebsa285-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
  15 static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
  16
  17 static u8 __init ebsa285_swizzle(struct pci_dev *dev, u8 *pin)
  18 {
  19         return PCI_SLOT(dev->devfn);
  20 }
  21
  22 static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  23 {
  24         if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
  25             dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
  26                 switch (PCI_FUNC(dev->devfn)) {
  27                         case 1: return 14;
  28                         case 2: return 15;
  29                         case 3: return 12;
  30                 }
  31
  32         return irqmap_ebsa285[(slot + pin) & 3];
  33 }
  34
  35 struct hw_pci ebsa285_pci __initdata = {
  36         init:           dc21285_init,
  37         swizzle:        ebsa285_swizzle,
  38         map_irq:        ebsa285_map_irq,
  39 };