LXR linux/arch/xtensa/include/asm/pci.h

   1/*
   2 * linux/include/asm-xtensa/pci.h
   3 *
   4 * This file is subject to the terms and conditions of the GNU General Public
   5 * License.  See the file "COPYING" in the main directory of this archive
   6 * for more details.
   7 *
   8 * Copyright (C) 2001 - 2005 Tensilica Inc.
   9 */
  10
  11#ifndef _XTENSA_PCI_H
  12#define _XTENSA_PCI_H
  13
  14/* Can be used to override the logic in pci_scan_bus for skipping
  15 * already-configured bus numbers - to be used for buggy BIOSes
  16 * or architectures with incomplete PCI setup by the loader
  17 */
  18
  19#define pcibios_assign_all_busses()     0
  20
  21/* Assume some values. (We should revise them, if necessary) */
  22
  23#define PCIBIOS_MIN_IO          0x2000
  24#define PCIBIOS_MIN_MEM         0x10000000
  25
  26/* Dynamic DMA mapping stuff.
  27 * Xtensa has everything mapped statically like x86.
  28 */
  29
  30#include <linux/types.h>
  31#include <linux/slab.h>
  32#include <linux/scatterlist.h>
  33#include <linux/string.h>
  34#include <asm/io.h>
  35
  36/* The PCI address space does equal the physical memory address space.
  37 * The networking and block device layers use this boolean for bounce buffer
  38 * decisions.
  39 */
  40
  41/* Tell PCI code what kind of PCI resource mappings we support */
  42#define HAVE_PCI_MMAP                   1
  43#define ARCH_GENERIC_PCI_MMAP_RESOURCE  1
  44#define arch_can_pci_mmap_io()          1
  45
  46/* Generic PCI */
  47#include <asm-generic/pci.h>
  48
  49#endif  /* _XTENSA_PCI_H */
  50