lkml.org 
[lkml]   [2011]   [Oct]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 08/11] ARM: add io{read,write}{16,32}be functions
Date
These functions are used in some PCI drivers with big-endian
MMIO space, and they are trivial to add here.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/include/asm/io.h | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index d66605d..bad7bfb 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -260,10 +260,16 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
#define ioread16(p) ({ unsigned int __v = le16_to_cpu((__force __le16)__raw_readw(p)); __iormb(); __v; })
#define ioread32(p) ({ unsigned int __v = le32_to_cpu((__force __le32)__raw_readl(p)); __iormb(); __v; })

+#define ioread16be(p) ({ unsigned int __v = be16_to_cpu((__force __be16)__raw_readw(p)); __iormb(); __v; })
+#define ioread32be(p) ({ unsigned int __v = be32_to_cpu((__force __be32)__raw_readl(p)); __iormb(); __v; })
+
#define iowrite8(v,p) ({ __iowmb(); (void)__raw_writeb(v, p); })
#define iowrite16(v,p) ({ __iowmb(); (void)__raw_writew((__force __u16)cpu_to_le16(v), p); })
#define iowrite32(v,p) ({ __iowmb(); (void)__raw_writel((__force __u32)cpu_to_le32(v), p); })

+#define iowrite16be(v,p) ({ __iowmb(); (void)__raw_writew((__force __u16)cpu_to_be16(v), p); })
+#define iowrite32be(v,p) ({ __iowmb(); (void)__raw_writel((__force __u32)cpu_to_be32(v), p); })
+
#define ioread8_rep(p,d,c) __raw_readsb(p,d,c)
#define ioread16_rep(p,d,c) __raw_readsw(p,d,c)
#define ioread32_rep(p,d,c) __raw_readsl(p,d,c)
--
1.7.5.4


\
 
 \ /
  Last update: 2011-10-01 21:25    [from the cache]
©2003-2011 Jasper Spaans