target/linux/coldfire/patches/017-Add-cpu-dma-sync-function-for-coldfire-platform.patch

   1 From 04491155db32bc1a9c0b367a7cac0f4a9ea9c4d2 Mon Sep 17 00:00:00 2001
   2 From: Alison Wang <b18965@freescale.com>
   3 Date: Thu, 4 Aug 2011 09:59:43 +0800
   4 Subject: [PATCH 17/52] Add cpu dma sync function for coldfire platform
   5
   6 This patch add dma_sync_sg_for_cpu() and dma_sync_single_for_cpu()
   7 for coldfire platform. The previous empty function do not flush the
   8 cache for the ram used for DMA.
   9
  10 Signed-off-by: Alison Wang <b18965@freescale.com>
  11 ---
  12  arch/m68k/include/asm/dma-mapping.h |   10 ++++++++--
  13  1 files changed, 8 insertions(+), 2 deletions(-)
  14
  15 --- a/arch/m68k/include/asm/dma-mapping.h
  16 +++ b/arch/m68k/include/asm/dma-mapping.h
  17 @@ -21,6 +21,9 @@ extern void *dma_alloc_coherent(struct d
  18  extern void dma_free_coherent(struct device *, size_t,
  19                               void *, dma_addr_t);
  20
  21 +extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
  22 +                                      enum dma_data_direction);
  23 +
  24  static inline void *dma_alloc_noncoherent(struct device *dev, size_t size,
  25                                           dma_addr_t *handle, gfp_t flag)
  26  {
  27 @@ -42,6 +45,7 @@ extern dma_addr_t dma_map_single(struct
  28  static inline void dma_unmap_single(struct device *dev, dma_addr_t addr,
  29                                     size_t size, enum dma_data_direction dir)
  30  {
  31 +       dma_sync_single_for_device(dev, addr, size, dir);
  32  }
  33
  34  extern dma_addr_t dma_map_page(struct device *, struct page *,
  35 @@ -50,6 +54,7 @@ extern dma_addr_t dma_map_page(struct de
  36  static inline void dma_unmap_page(struct device *dev, dma_addr_t address,
  37                                   size_t size, enum dma_data_direction dir)
  38  {
  39 +       dma_sync_single_for_device(dev, address, size, dir);
  40  }
  41
  42  extern int dma_map_sg(struct device *, struct scatterlist *, int,
  43 @@ -57,10 +62,9 @@ extern int dma_map_sg(struct device *, s
  44  static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sg,
  45                                 int nhwentries, enum dma_data_direction dir)
  46  {
  47 +       dma_map_sg(dev, sg, nhwentries, dir);
  48  }
  49
  50 -extern void dma_sync_single_for_device(struct device *, dma_addr_t, size_t,
  51 -                                      enum dma_data_direction);
  52  extern void dma_sync_sg_for_device(struct device *, struct scatterlist *, int,
  53                                    enum dma_data_direction);
  54
  55 @@ -75,11 +79,13 @@ static inline void dma_sync_single_range
  56  static inline void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
  57                                            size_t size, enum dma_data_direction dir)
  58  {
  59 +       dma_sync_single_for_device(dev, handle, size, dir);
  60  }
  61
  62  static inline void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
  63                                        int nents, enum dma_data_direction dir)
  64  {
  65 +       dma_sync_sg_for_device(dev, sg, nents, dir);
  66  }
  67
  68  static inline void dma_sync_single_range_for_cpu(struct device *dev,