Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2a41bfbc authored by Horia Geantă's avatar Horia Geantă Committed by Herbert Xu
Browse files

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: default avatarCatalin Marinas <catalin.marinas@arm.com>
Signed-off-by: default avatarAlex Porosanu <alexandru.porosanu@nxp.com>
Signed-off-by: default avatarHoria Geantă <horia.geanta@nxp.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 9e44fb18

arch/arm64/include/asm/io.h

+3 −1
Original line number Diff line number Diff line
@@ -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