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Commit 06901bd8 authored by Arnd Bergmann's avatar Arnd Bergmann
Browse files

ARM: add io{read,write}{16,32}be functions 



These functions are used in some PCI drivers with big-endian
MMIO space, and they are trivial to add here.

Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
parent d0ee9f40

arch/arm/include/asm/io.h

+6 −0
Original line number Diff line number Diff line
@@ -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)