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add BE I/O memory accessors for arch/ppc

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SVN-Revision: 10287
This commit is contained in:
Imre Kaloz 2008-01-27 21:21:03 +00:00
parent 9d127a9846
commit 2a1011628d
1 changed files with 80 additions and 0 deletions
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80
target/linux/generic-2.6/patches-2.6.23/920-ppc_big_endian_io_memory_accessors.patch Normal file
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@ -0,0 +1,80 @@
From a.othieno@bluewin.ch Tue Oct 11 07:50:21 2005
From: Arthur Othieno <a.othieno@bluewin.ch>
Subject: Big-endian I/O memory accessors.
Date: Tue, 11 Oct 2005 07:50:21 +1000
X-Patchwork-ID: 2759
From: Arthur Othieno <a.othieno@bluewin.ch>
I/O memory accessors. Big endian version. For those busses/devices
that do export big-endian I/O memory.
Of notable relevance/reference:
http://lwn.net/Articles/132804/
http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019798.html
http://ozlabs.org/pipermail/linuxppc-embedded/2005-August/019752.html
Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch>
---
Paulus,
A similar patch for ppc64 made it upstream with your big ppc64 merge.
This one is still sitting in http://patchwork.ozlabs.org/linuxppc/
and didn't make it with the ppc32 equivalent. Thanks.
include/asm-ppc/io.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
---
diff -uprN a/include/asm-ppc/io.h b/include/asm-ppc/io.h
--- a/include/asm-ppc/io.h 2005-08-21 17:49:44.000000000 -0400
+++ b/include/asm-ppc/io.h 2005-08-21 20:29:55.000000000 -0400
@@ -487,11 +487,21 @@ static inline unsigned int ioread16(void
return readw(addr);
}
+static inline unsigned int ioread16be(void __iomem *addr)
+{
+ return in_be16(addr);
+}
+
static inline unsigned int ioread32(void __iomem *addr)
{
return readl(addr);
}
+static inline unsigned int ioread32be(void __iomem *addr)
+{
+ return in_be32(addr);
+}
+
static inline void iowrite8(u8 val, void __iomem *addr)
{
writeb(val, addr);
@@ -502,11 +512,21 @@ static inline void iowrite16(u16 val, vo
writew(val, addr);
}
+static inline void iowrite16be(u16 val, void __iomem *addr)
+{
+ out_be16(addr, val);
+}
+
static inline void iowrite32(u32 val, void __iomem *addr)
{
writel(val, addr);
}
+static inline void iowrite32be(u32 val, void __iomem *addr)
+{
+ out_be32(addr, val);
+}
+
static inline void ioread8_rep(void __iomem *addr, void *dst, unsigned long count)
{
_insb(addr, dst, count);