arch/mips/pci/fixup-ocelot3.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2004 Montavista Software Inc.
   7  * Author: Manish Lachwani (mlachwani@mvista.com)
   8  *
   9  * Looking at the schematics for the Ocelot-3 board, there are
  10  * two PCI busses and each bus has two PCI slots.
  11  */
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/pci.h>
  15 #include <asm/mipsregs.h>
  16
  17 /*
  18  * Do platform specific device initialization at
  19  * pci_enable_device() time
  20  */
  21 int pcibios_plat_dev_init(struct pci_dev *dev)
  22 {
  23         return 0;
  24 }
  25
  26 int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  27 {
  28         int bus = dev->bus->number;
  29
  30         if (bus == 0 && slot == 1)
  31                 return 2;       /* PCI-X A */
  32         if (bus == 0 && slot == 2)
  33                 return 3;       /* PCI-X B */
  34         if (bus == 1 && slot == 1)
  35                 return 4;       /* PCI A */
  36         if (bus == 1 && slot == 2)
  37                 return 5;       /* PCI B */
  38
  39 return 0;
  40         panic("Whooops in pcibios_map_irq");
  41 }