target/linux/generic-2.6/patches-2.6.25/930-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 Index: linux-2.6.25.1/include/asm-ppc/io.h
  34 ===================================================================
  35 --- linux-2.6.25.1.orig/include/asm-ppc/io.h
  36 +++ linux-2.6.25.1/include/asm-ppc/io.h
  37 @@ -413,11 +413,21 @@ static inline unsigned int ioread16(void
  38         return readw(addr);
  39  }
  40
  41 +static inline unsigned int ioread16be(void __iomem *addr)
  42 +{
  43 +       return in_be16(addr);
  44 +}
  45 +
  46  static inline unsigned int ioread32(void __iomem *addr)
  47  {
  48         return readl(addr);
  49  }
  50
  51 +static inline unsigned int ioread32be(void __iomem *addr)
  52 +{
  53 +       return in_be32(addr);
  54 +}
  55 +
  56  static inline void iowrite8(u8 val, void __iomem *addr)
  57  {
  58         writeb(val, addr);
  59 @@ -428,11 +438,21 @@ static inline void iowrite16(u16 val, vo
  60         writew(val, addr);
  61  }
  62
  63 +static inline void iowrite16be(u16 val, void __iomem *addr)
  64 +{
  65 +       out_be16(addr, val);
  66 +}
  67 +
  68  static inline void iowrite32(u32 val, void __iomem *addr)
  69  {
  70         writel(val, addr);
  71  }
  72
  73 +static inline void iowrite32be(u32 val, void __iomem *addr)
  74 +{
  75 +       out_be32(addr, val);
  76 +}
  77 +
  78  static inline void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
  79  {
  80         _insb(addr, dst, count);