release/src-rt-6.x/linux/linux-2.6/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 #include <asm/mach-types.h>
  15
  16 static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
  17
  18 static int __init ebsa285_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  19 {
  20         if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
  21             dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
  22                 switch (PCI_FUNC(dev->devfn)) {
  23                         case 1: return 14;
  24                         case 2: return 15;
  25                         case 3: return 12;
  26                 }
  27
  28         return irqmap_ebsa285[(slot + pin) & 3];
  29 }
  30
  31 static struct hw_pci ebsa285_pci __initdata = {
  32         .swizzle                = pci_std_swizzle,
  33         .map_irq                = ebsa285_map_irq,
  34         .nr_controllers         = 1,
  35         .setup                  = dc21285_setup,
  36         .scan                   = dc21285_scan_bus,
  37         .preinit                = dc21285_preinit,
  38         .postinit               = dc21285_postinit,
  39 };
  40
  41 static int __init ebsa285_init_pci(void)
  42 {
  43         if (machine_is_ebsa285())
  44                 pci_common_init(&ebsa285_pci);
  45         return 0;
  46 }
  47
  48 subsys_initcall(ebsa285_init_pci);