/*
   * linux/include/asm-xtensa/pci.h
   *
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 2001 - 2005 Tensilica Inc.
   */
  
  #ifndef _XTENSA_PCI_H
  #define _XTENSA_PCI_H
  
  #ifdef __KERNEL__
  
  /* Can be used to override the logic in pci_scan_bus for skipping
   * already-configured bus numbers - to be used for buggy BIOSes
   * or architectures with incomplete PCI setup by the loader
   */
  
  #define pcibios_assign_all_busses()	0
  
  extern struct pci_controller* pcibios_alloc_controller(void);

  static inline void pcibios_set_master(struct pci_dev *dev)

  {
  	/* No special bus mastering setup handling */
  }

  static inline void pcibios_penalize_isa_irq(int irq)

  {
  	/* We don't do dynamic PCI IRQ allocation */
  }
  
  /* Assume some values. (We should revise them, if necessary) */
  
  #define PCIBIOS_MIN_IO		0x2000
  #define PCIBIOS_MIN_MEM		0x10000000
  
  /* Dynamic DMA mapping stuff.
   * Xtensa has everything mapped statically like x86.
   */
  
  #include <linux/types.h>
  #include <linux/slab.h>
  #include <asm/scatterlist.h>
  #include <linux/string.h>
  #include <asm/io.h>
  
  struct pci_dev;
  
  /* The PCI address space does equal the physical memory address space.
   * The networking and block device layers use this boolean for bounce buffer
   * decisions.
   */
  
  #define PCI_DMA_BUS_IS_PHYS	(1)
  
  /* pci_unmap_{page,single} is a no-op, so */
  #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME)
  #define DECLARE_PCI_UNMAP_LEN(LEN_NAME)
  #define pci_unmap_addr(PTR, ADDR_NAME)		(0)
  #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL)	do { } while (0)
  #define pci_ubnmap_len(PTR, LEN_NAME)		(0)
  #define pci_unmap_len_set(PTR, LEN_NAME, VAL)	do { } while (0)

  /* Map a range of PCI memory or I/O space for a device into user space */
  int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
                          enum pci_mmap_state mmap_state, int write_combine);
  
  /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
  #define HAVE_PCI_MMAP	1

  #endif /* __KERNEL__ */
  
  /* Implement the pci_ DMA API in terms of the generic device dma_ one */
  #include <asm-generic/pci-dma-compat.h>
  
  /* Generic PCI */
  #include <asm-generic/pci.h>
  
  #endif	/* _XTENSA_PCI_H */