On Wed, Oct 22, 2014 at 05:06:23PM +0100, mathieu.poir...@linaro.org wrote: > +#if __LINUX_ARM_ARCH__ >= 5
My old ARMv5 book does not list LDRD/STRD. It looks like they only come with ARMv5TE. Are there any processors prior to this supported by the kernel? > +static inline void __raw_writeq(u64 val, volatile void __iomem *addr) > +{ > + asm volatile("strd %1, %0" > + : "+Qo" (*(volatile u64 __force *)addr) > + : "r" (val)); > +} > + > +static inline u64 __raw_readq(const volatile void __iomem *addr) > +{ > + u64 val; > + asm volatile("ldrd %1, %0" > + : "+Qo" (*(volatile u64 __force *)addr), > + "=r" (val)); > + return val; > +} > +#endif I'm curious why you need these. Do you have a device that needs a 64-bit single access or you are trying to read two consecutive registers? -- Catalin -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/