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

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * linux/arch/arm/mach-footbridge/netwinder-pci.c
   4 *
   5 * PCI bios-type initialisation for PCI machines
   6 *
   7 * Bits taken from various places.
   8 */
   9#include <linux/kernel.h>
  10#include <linux/pci.h>
  11#include <linux/init.h>
  12
  13#include <asm/irq.h>
  14#include <asm/mach/pci.h>
  15#include <asm/mach-types.h>
  16
  17/*
  18 * We now use the slot ID instead of the device identifiers to select
  19 * which interrupt is routed where.
  20 */
  21static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  22{
  23        switch (slot) {
  24        case 0:  /* host bridge */
  25                return 0;
  26
  27        case 9:  /* CyberPro */
  28                return IRQ_NETWINDER_VGA;
  29
  30        case 10: /* DC21143 */
  31                return IRQ_NETWINDER_ETHER100;
  32
  33        case 12: /* Winbond 553 */
  34                return IRQ_ISA_HARDDISK1;
  35
  36        case 13: /* Winbond 89C940F */
  37                return IRQ_NETWINDER_ETHER10;
  38
  39        default:
  40                printk(KERN_ERR "PCI: unknown device in slot %s\n",
  41                        pci_name(dev));
  42                return 0;
  43        }
  44}
  45
  46static struct hw_pci netwinder_pci __initdata = {
  47        .map_irq                = netwinder_map_irq,
  48        .nr_controllers         = 1,
  49        .ops                    = &dc21285_ops,
  50        .setup                  = dc21285_setup,
  51        .preinit                = dc21285_preinit,
  52        .postinit               = dc21285_postinit,
  53};
  54
  55static int __init netwinder_pci_init(void)
  56{
  57        if (machine_is_netwinder())
  58                pci_common_init(&netwinder_pci);
  59        return 0;
  60}
  61
  62subsys_initcall(netwinder_pci_init);
  63