| Message ID | 1440762587-7815-1-git-send-email-horia.geanta@freescale.com (mailing list archive) |
|---|---|
| State | RFC |
| Delegated to: | Herbert Xu |
| Headers | show |
On Fri, Aug 28, 2015 at 12:49:47PM +0100, Horia Geant? wrote: > This will allow device drivers to consistently use io{read,write}XXbe > macros also for 64-bit accesses. > > Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com> > Signed-off-by: Horia Geant? <horia.geanta@freescale.com> > --- > arch/arm64/include/asm/io.h | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > 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); }) This looks like the first instance of this in the tree, so perhaps it's also worth adding a version to asm-generic/io.h predicated on CONFIG_64BIT? Will -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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
This will allow device drivers to consistently use io{read,write}XXbe macros also for 64-bit accesses. Signed-off-by: Alex Porosanu <alexandru.porosanu@freescale.com> Signed-off-by: Horia Geant? <horia.geanta@freescale.com> --- arch/arm64/include/asm/io.h | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)