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

   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * linux/arch/arm/mach-footbridge/ebsa285-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
  17static int irqmap_ebsa285[] __initdata = { IRQ_IN3, IRQ_IN1, IRQ_IN0, IRQ_PCI };
  18
  19static int __init ebsa285_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  20{
  21        if (dev->vendor == PCI_VENDOR_ID_CONTAQ &&
  22            dev->device == PCI_DEVICE_ID_CONTAQ_82C693)
  23                switch (PCI_FUNC(dev->devfn)) {
  24                case 1: return 14;
  25                case 2: return 15;
  26                case 3: return 12;
  27                }
  28
  29        return irqmap_ebsa285[(slot + pin) & 3];
  30}
  31
  32static struct hw_pci ebsa285_pci __initdata = {
  33        .map_irq                = ebsa285_map_irq,
  34        .nr_controllers         = 1,
  35        .ops                    = &dc21285_ops,
  36        .setup                  = dc21285_setup,
  37        .preinit                = dc21285_preinit,
  38        .postinit               = dc21285_postinit,
  39};
  40
  41static int __init ebsa285_init_pci(void)
  42{
  43        if (machine_is_ebsa285())
  44                pci_common_init(&ebsa285_pci);
  45        return 0;
  46}
  47
  48subsys_initcall(ebsa285_init_pci);
  49