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authorHoria Geantă <horia.geanta@nxp.com>2016-05-19 15:11:04 (GMT)
committerHerbert Xu <herbert@gondor.apana.org.au>2016-05-31 08:41:51 (GMT)
commit2a41bfbc0393e6f2db419b80a7000708d90c2eeb (patch)
tree99857770c2904b50fc9ead64070f5bd3412e34b6
parent9e44fb1816dba8f283809a25c29ff7969a3acb99 (diff)
downloadlinux-2a41bfbc0393e6f2db419b80a7000708d90c2eeb.tar.xz
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.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 44be1e0..9b6e408 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