target/linux/generic-2.6/patches-2.6.23/920-ppc_big_endian_io_memory_accessors.patch

   1 From a.othieno@bluewin.ch Tue Oct 11 07:50:21 2005
   2 From: Arthur Othieno <a.othieno@bluewin.ch>
   3 Subject: Big-endian I/O memory accessors.
   4 Date: Tue, 11 Oct 2005 07:50:21 +1000
   5 X-Patchwork-ID: 2759
   6
   7 From: Arthur Othieno <a.othieno@bluewin.ch>
   8
   9 I/O memory accessors. Big endian version. For those busses/devices
  10 that do export big-endian I/O memory.
  11
  12 Of notable relevance/reference:
  13
  14   http://lwn.net/Articles/132804/
  15   http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019798.html
  16   http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019752.html
  17
  18 Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch>
  19 ---
  20
  21 Paulus,
  22
  23 A similar patch for ppc64 made it upstream with your big ppc64 merge.
  24 This one is still sitting in http://patchwork.ozlabs.org/linuxppc/
  25 and didn't make it with the ppc32 equivalent. Thanks.
  26
  27
  28  include/asm-ppc/io.h |   20 ++++++++++++++++++++
  29  1 file changed, 20 insertions(+)
  30
  31
  32 ---
  33 --- a/include/asm-ppc/io.h
  34 +++ b/include/asm-ppc/io.h
  35 @@ -453,11 +453,21 @@
  36         return readw(addr);
  37  }
  38
  39 +static inline unsigned int ioread16be(void __iomem *addr)
  40 +{
  41 +       return in_be16(addr);
  42 +}
  43 +
  44  static inline unsigned int ioread32(void __iomem *addr)
  45  {
  46         return readl(addr);
  47  }
  48
  49 +static inline unsigned int ioread32be(void __iomem *addr)
  50 +{
  51 +       return in_be32(addr);
  52 +}
  53 +
  54  static inline void iowrite8(u8 val, void __iomem *addr)
  55  {
  56         writeb(val, addr);
  57 @@ -468,11 +478,21 @@
  58         writew(val, addr);
  59  }
  60
  61 +static inline void iowrite16be(u16 val, void __iomem *addr)
  62 +{
  63 +       out_be16(addr, val);
  64 +}
  65 +
  66  static inline void iowrite32(u32 val, void __iomem *addr)
  67  {
  68         writel(val, addr);
  69  }
  70
  71 +static inline void iowrite32be(u32 val, void __iomem *addr)
  72 +{
  73 +       out_be32(addr, val);
  74 +}
  75 +
  76  static inline void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
  77  {
  78         _insb(addr, dst, count);