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 #ifdef __KERNEL__
  15
  16 /* Can be used to override the logic in pci_scan_bus for skipping
  17  * already-configured bus numbers - to be used for buggy BIOSes
  18  * or architectures with incomplete PCI setup by the loader
  19  */
  20
  21 #define pcibios_assign_all_busses()     0
  22
  23 extern struct pci_controller* pcibios_alloc_controller(void);
  24
  25 /* Assume some values. (We should revise them, if necessary) */
  26
  27 #define PCIBIOS_MIN_IO          0x2000
  28 #define PCIBIOS_MIN_MEM         0x10000000
  29
  30 /* Dynamic DMA mapping stuff.
  31  * Xtensa has everything mapped statically like x86.
  32  */
  33
  34 #include <linux/types.h>
  35 #include <linux/slab.h>
  36 #include <linux/scatterlist.h>
  37 #include <linux/string.h>
  38 #include <asm/io.h>
  39
  40 /* The PCI address space does equal the physical memory address space.
  41  * The networking and block device layers use this boolean for bounce buffer
  42  * decisions.
  43  */
  44
  45 #define PCI_DMA_BUS_IS_PHYS     (1)
  46
  47 /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  48 #define HAVE_PCI_MMAP           1
  49 #define arch_can_pci_mmap_io()  1
  50
  51 #endif /* __KERNEL__ */
  52
  53 /* Generic PCI */
  54 #include <asm-generic/pci.h>
  55
  56 #endif  /* _XTENSA_PCI_H */