diff options
| author | Horia Geantă | 2016-05-19 17:11:04 +0200 |
|---|---|---|
| committer | Herbert Xu | 2016-05-31 10:41:51 +0200 |
| commit | 2a41bfbc0393e6f2db419b80a7000708d90c2eeb (patch) | |
| tree | 99857770c2904b50fc9ead64070f5bd3412e34b6 | |
| parent | asm-generic/io.h: add io{read,write}64 accessors (diff) | |
| download | kernel-qcow2-linux-2a41bfbc0393e6f2db419b80a7000708d90c2eeb.tar.gz kernel-qcow2-linux-2a41bfbc0393e6f2db419b80a7000708d90c2eeb.tar.xz kernel-qcow2-linux-2a41bfbc0393e6f2db419b80a7000708d90c2eeb.zip | |
arm64: add io{read,write}64be accessors
This will allow device drivers to consistently use io{read,write}XXbe
also for 64-bit accesses.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Alex Porosanu <alexandru.porosanu@nxp.com>
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | arch/arm64/include/asm/io.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h index 44be1e03ed65..9b6e408cfa51 100644 --- a/arch/arm64/include/asm/io.h +++ b/arch/arm64/include/asm/io.h @@ -174,13 +174,15 @@ extern void __iomem *ioremap_cache(phys_addr_t phys_addr, size_t size); #define iounmap __iounmap /* - * io{read,write}{16,32}be() macros + * io{read,write}{16,32,64}be() macros */ #define ioread16be(p) ({ __u16 __v = be16_to_cpu((__force __be16)__raw_readw(p)); __iormb(); __v; }) #define ioread32be(p) ({ __u32 __v = be32_to_cpu((__force __be32)__raw_readl(p)); __iormb(); __v; }) +#define ioread64be(p) ({ __u64 __v = be64_to_cpu((__force __be64)__raw_readq(p)); __iormb(); __v; }) #define iowrite16be(v,p) ({ __iowmb(); __raw_writew((__force __u16)cpu_to_be16(v), p); }) #define iowrite32be(v,p) ({ __iowmb(); __raw_writel((__force __u32)cpu_to_be32(v), p); }) +#define iowrite64be(v,p) ({ __iowmb(); __raw_writeq((__force __u64)cpu_to_be64(v), p); }) /* * Convert a physical pointer to a virtual kernel pointer for /dev/mem |