[PATCH 1/3] asm-generic: add IO memory accessors

Franck Jullien franck.jullien at gmail.com
Tue May 13 11:38:24 PDT 2014


Signed-off-by: Franck Jullien <franck.jullien at gmail.com>
---
 include/asm-generic/io.h |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 3f0f5a2..8d83d68 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -219,4 +219,16 @@ static inline void writesb(const void __iomem *addr, const void *buf, int len)
 	outsb(addr - PCI_IOBASE, buf, len);
 }
 
+#define ioread8(addr)		readb(addr)
+#define ioread16(addr)		readw(addr)
+#define ioread16be(addr)	__be16_to_cpu(__raw_readw(addr))
+#define ioread32(addr)		readl(addr)
+#define ioread32be(addr)	__be32_to_cpu(__raw_readl(addr))
+
+#define iowrite8(v, addr)	writeb((v), (addr))
+#define iowrite16(v, addr)	writew((v), (addr))
+#define iowrite16be(v, addr)	__raw_writew(__cpu_to_be16(v), addr)
+#define iowrite32(v, addr)	writel((v), (addr))
+#define iowrite32be(v, addr)	__raw_writel(__cpu_to_be32(v), addr)
+
 #endif /* __ASM_GENERIC_IO_H */
-- 
1.7.1




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