From eadefeff9c5572d82c2f5d907a0bfb3ba55ce901 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 15 Oct 2008 09:50:23 +0200 Subject: [PATCH] [ARM] MX3: Use ioremap wrapper to map SoC devices nonshared The internal devices of the MX3 Processor have to be mapped MT_DEVICE_NONSHARED devices, otherwise cache corruptions occur. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Sascha Hauer --- arch/arm/plat-mxc/include/mach/io.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/arm/plat-mxc/include/mach/io.h b/arch/arm/plat-mxc/include/mach/io.h index 65b6810124c1..5d4cb1196441 100644 --- a/arch/arm/plat-mxc/include/mach/io.h +++ b/arch/arm/plat-mxc/include/mach/io.h @@ -14,6 +14,26 @@ /* Allow IO space to be anywhere in the memory */ #define IO_SPACE_LIMIT 0xffffffff +#ifdef CONFIG_ARCH_MX3 +#define __arch_ioremap __mx3_ioremap +#define __arch_iounmap __iounmap + +static inline void __iomem * +__mx3_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) +{ + if (mtype == MT_DEVICE) { + /* Access all peripherals below 0x80000000 as nonshared device + * but leave l2cc alone. + */ + if ((phys_addr < 0x80000000) && ((phys_addr < L2CC_BASE_ADDR) || + (phys_addr >= L2CC_BASE_ADDR + L2CC_SIZE))) + mtype = MT_DEVICE_NONSHARED; + } + + return __arm_ioremap(phys_addr, size, mtype); +} +#endif + /* io address mapping macro */ #define __io(a) ((void __iomem *)(a)) -- 2.20.1