From d286a43aa248cb657e0876b5aa4fe0034170d05c Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Sat, 2 Apr 2011 00:15:49 +0200 Subject: [PATCH] ARM: mx3: make ioremap quirk ready for multi-SoC kernels MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit To be able to compile e.g. i.MX31 and i.MX51 in a single kernel image the ioremap quirk needs a runtime check. While touching this code make the comment more understandable by adding a sentence from the commit log that introduced it (eadefef ([ARM] MX3: Use ioremap wrapper to map SoC devices nonshared)). As mach/io.h now uses cpu_is_ some header reshuffling in mach/hardware.h was necessary. (mach/mx27.h and mach/mx31.h #include which #includes . So mach/mxc.h which provides the cpu_is_ macros needs to be included before mach/mx27.h and mach/mx31.h.) LAKML-Reference: 1302464943-20721-5-git-send-email-u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König Signed-off-by: Sascha Hauer --- arch/arm/plat-mxc/include/mach/hardware.h | 4 ++-- arch/arm/plat-mxc/include/mach/io.h | 23 +++++++++++++++-------- 2 files changed, 17 insertions(+), 10 deletions(-) diff --git a/arch/arm/plat-mxc/include/mach/hardware.h b/arch/arm/plat-mxc/include/mach/hardware.h index a881db5c395e..67d3e2bed065 100644 --- a/arch/arm/plat-mxc/include/mach/hardware.h +++ b/arch/arm/plat-mxc/include/mach/hardware.h @@ -95,6 +95,8 @@ #define IMX_IO_ADDRESS(x) IOMEM(IMX_IO_P2V(x)) +#include + #ifdef CONFIG_ARCH_MX5 #include #include @@ -125,8 +127,6 @@ # include #endif -#include - #define imx_map_entry(soc, name, _type) { \ .virtual = soc ## _IO_P2V(soc ## _ ## name ## _BASE_ADDR), \ .pfn = __phys_to_pfn(soc ## _ ## name ## _BASE_ADDR), \ diff --git a/arch/arm/plat-mxc/include/mach/io.h b/arch/arm/plat-mxc/include/mach/io.h index b4f2de769466..4347a87d2bb0 100644 --- a/arch/arm/plat-mxc/include/mach/io.h +++ b/arch/arm/plat-mxc/include/mach/io.h @@ -14,19 +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 +#if defined(CONFIG_SOC_IMX31) || defined(CONFIG_SOC_IMX35) +#include + +#define __arch_ioremap __imx_ioremap #define __arch_iounmap __iounmap +#define addr_in_module(addr, mod) \ + ((unsigned long)(addr) - mod ## _BASE_ADDR < mod ## _SIZE) + static inline void __iomem * -__mx3_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) +__imx_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 (mtype == MT_DEVICE && (cpu_is_mx31() || cpu_is_mx35())) { + /* + * Access all peripherals below 0x80000000 as nonshared device + * on mx3, but leave l2cc alone. Otherwise cache corruptions + * can occur. */ - if ((phys_addr < 0x80000000) && ((phys_addr < 0x30000000) || - (phys_addr >= 0x30000000 + SZ_1M))) + if (phys_addr < 0x80000000 && + !addr_in_module(phys_addr, MX3x_L2CC)) mtype = MT_DEVICE_NONSHARED; } -- 2.20.1