LXR linux-bk/include/asm-v850/pci.h

   1/*
   2 * include/asm-v850/pci.h -- PCI support
   3 *
   4 *  Copyright (C) 2001,02  NEC Corporation
   5 *  Copyright (C) 2001,02  Miles Bader <miles@gnu.org>
   6 *
   7 * This file is subject to the terms and conditions of the GNU General
   8 * Public License.  See the file COPYING in the main directory of this
   9 * archive for more details.
  10 *
  11 * Written by Miles Bader <miles@gnu.org>
  12 */
  13
  14#ifndef __V850_PCI_H__
  15#define __V850_PCI_H__
  16
  17/* Get any platform-dependent definitions.  */
  18#include <asm/machdep.h>
  19
  20#define pcibios_scan_all_fns(a, b)      0
  21
  22/* Generic declarations.  */
  23
  24struct scatterlist;
  25
  26extern void pcibios_set_master (struct pci_dev *dev);
  27
  28/* `Grant' to PDEV the memory block at CPU_ADDR, for doing DMA.  The
  29   32-bit PCI bus mastering address to use is returned.  the device owns
  30   this memory until either pci_unmap_single or pci_dma_sync_single_for_cpu is
  31   performed.  */
  32extern dma_addr_t
  33pci_map_single (struct pci_dev *pdev, void *cpu_addr, size_t size, int dir);
  34
  35/* Return to the CPU the PCI DMA memory block previously `granted' to
  36   PDEV, at DMA_ADDR.  */
  37extern void
  38pci_unmap_single (struct pci_dev *pdev, dma_addr_t dma_addr, size_t size,
  39                  int dir);
  40
  41/* Make physical memory consistent for a single streaming mode DMA
  42   translation after a transfer.
  43
  44   If you perform a pci_map_single() but wish to interrogate the
  45   buffer using the cpu, yet do not wish to teardown the PCI dma
  46   mapping, you must call this function before doing so.  At the next
  47   point you give the PCI dma address back to the card, you must first
  48   perform a pci_dma_sync_for_device, and then the device again owns
  49   the buffer.  */
  50extern void
  51pci_dma_sync_single_for_cpu (struct pci_dev *dev, dma_addr_t dma_addr, size_t size,
  52                     int dir);
  53
  54extern void
  55pci_dma_sync_single_for_device (struct pci_dev *dev, dma_addr_t dma_addr, size_t size,
  56                     int dir);
  57
  58
  59/* Do multiple DMA mappings at once.  */
  60extern int
  61pci_map_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len, int dir);
  62
  63/* Unmap multiple DMA mappings at once.  */
  64extern void
  65pci_unmap_sg (struct pci_dev *pdev, struct scatterlist *sg, int sg_len,
  66              int dir);
  67
  68/* Allocate and map kernel buffer using consistent mode DMA for PCI
  69   device.  Returns non-NULL cpu-view pointer to the buffer if
  70   successful and sets *DMA_ADDR to the pci side dma address as well,
  71   else DMA_ADDR is undefined.  */
  72extern void *
  73pci_alloc_consistent (struct pci_dev *pdev, size_t size, dma_addr_t *dma_addr);
  74
  75/* Free and unmap a consistent DMA buffer.  CPU_ADDR and DMA_ADDR must
  76   be values that were returned from pci_alloc_consistent.  SIZE must be
  77   the same as what as passed into pci_alloc_consistent.  References to
  78   the memory and mappings assosciated with CPU_ADDR or DMA_ADDR past
  79   this call are illegal.  */
  80extern void
  81pci_free_consistent (struct pci_dev *pdev, size_t size, void *cpu_addr,
  82                     dma_addr_t dma_addr);
  83
  84static inline void pcibios_add_platform_entries(struct pci_dev *dev)
  85{
  86}
  87
  88#endif /* __V850_PCI_H__ */
  89