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

   1 /*
   2  * linux/arch/arm/mach-footbridge/netwinder-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 /*
  17  * We now use the slot ID instead of the device identifiers to select
  18  * which interrupt is routed where.
  19  */
  20 static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  21 {
  22         switch (slot) {
  23         case 0:  /* host bridge */
  24                 return 0;
  25
  26         case 9:  /* CyberPro */
  27                 return IRQ_NETWINDER_VGA;
  28
  29         case 10: /* DC21143 */
  30                 return IRQ_NETWINDER_ETHER100;
  31
  32         case 12: /* Winbond 553 */
  33                 return IRQ_ISA_HARDDISK1;
  34
  35         case 13: /* Winbond 89C940F */
  36                 return IRQ_NETWINDER_ETHER10;
  37
  38         default:
  39                 printk(KERN_ERR "PCI: unknown device in slot %s\n",
  40                         pci_name(dev));
  41                 return 0;
  42         }
  43 }
  44
  45 static struct hw_pci netwinder_pci __initdata = {
  46         .swizzle                = pci_std_swizzle,
  47         .map_irq                = netwinder_map_irq,
  48         .nr_controllers         = 1,
  49         .setup                  = dc21285_setup,
  50         .scan                   = dc21285_scan_bus,
  51         .preinit                = dc21285_preinit,
  52         .postinit               = dc21285_postinit,
  53 };
  54
  55 static int __init netwinder_pci_init(void)
  56 {
  57         if (machine_is_netwinder())
  58                 pci_common_init(&netwinder_pci);
  59         return 0;
  60 }
  61
  62 subsys_initcall(netwinder_pci_init);