From mboxrd@z Thu Jan 1 00:00:00 1970 From: shawn.guo@linaro.org (Shawn Guo) Date: Wed, 28 Sep 2011 17:16:07 +0800 Subject: [PATCH 5/6] arm/imx: remove cpu_is_xxx() check from __imx_ioremap() In-Reply-To: <1317201368-6403-1-git-send-email-shawn.guo@linaro.org> References: <1317201368-6403-1-git-send-email-shawn.guo@linaro.org> Message-ID: <1317201368-6403-6-git-send-email-shawn.guo@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch adds an ioremap hook imx_ioremap to be called in __imx_ioremap(). Any soc that needs a customized ioremap other than __arm_ioremap() can set up this hook in soc specific call. Signed-off-by: Shawn Guo --- arch/arm/mach-imx/mm-imx3.c | 19 +++++++++++++++++++ arch/arm/plat-mxc/include/mach/io.h | 22 ++++++---------------- arch/arm/plat-mxc/system.c | 1 + 3 files changed, 26 insertions(+), 16 deletions(-) diff --git a/arch/arm/mach-imx/mm-imx3.c b/arch/arm/mach-imx/mm-imx3.c index 6fad0d6..9f0e82e 100644 --- a/arch/arm/mach-imx/mm-imx3.c +++ b/arch/arm/mach-imx/mm-imx3.c @@ -58,6 +58,23 @@ static void imx3_idle(void) : "=r" (reg)); } +static void __iomem *imx3_ioremap(unsigned long phys_addr, size_t size, + unsigned int mtype) +{ + if (mtype == MT_DEVICE) { + /* + * Access all peripherals below 0x80000000 as nonshared device + * on mx3, but leave l2cc alone. Otherwise cache corruptions + * can occur. + */ + if (phys_addr < 0x80000000 && + !addr_in_module(phys_addr, MX3x_L2CC)) + mtype = MT_DEVICE_NONSHARED; + } + + return __arm_ioremap(phys_addr, size, mtype); +} + void imx3_init_l2x0(void) { void __iomem *l2x0_base; @@ -127,6 +144,7 @@ void __init imx31_init_early(void) mxc_set_cpu_type(MXC_CPU_MX31); mxc_arch_reset_init(MX31_IO_ADDRESS(MX31_WDOG_BASE_ADDR)); imx_idle = imx3_idle; + imx_ioremap = imx3_ioremap; } void __init imx35_init_early(void) @@ -135,6 +153,7 @@ void __init imx35_init_early(void) mxc_iomux_v3_init(MX35_IO_ADDRESS(MX35_IOMUXC_BASE_ADDR)); mxc_arch_reset_init(MX35_IO_ADDRESS(MX35_WDOG_BASE_ADDR)); imx_idle = imx3_idle; + imx_ioremap = imx3_ioremap; } void __init mx31_init_irq(void) diff --git a/arch/arm/plat-mxc/include/mach/io.h b/arch/arm/plat-mxc/include/mach/io.h index 4347a87..338300b 100644 --- a/arch/arm/plat-mxc/include/mach/io.h +++ b/arch/arm/plat-mxc/include/mach/io.h @@ -14,32 +14,22 @@ /* Allow IO space to be anywhere in the memory */ #define IO_SPACE_LIMIT 0xffffffff -#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) +extern void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int); + static inline void __iomem * __imx_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype) { - 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 && - !addr_in_module(phys_addr, MX3x_L2CC)) - mtype = MT_DEVICE_NONSHARED; - } - - return __arm_ioremap(phys_addr, size, mtype); + if (imx_ioremap != NULL) + return imx_ioremap(phys_addr, size, mtype); + else + return __arm_ioremap(phys_addr, size, mtype); } -#endif /* io address mapping macro */ #define __io(a) __typesafe_io(a) diff --git a/arch/arm/plat-mxc/system.c b/arch/arm/plat-mxc/system.c index 5fa03e7..9dad8dc 100644 --- a/arch/arm/plat-mxc/system.c +++ b/arch/arm/plat-mxc/system.c @@ -29,6 +29,7 @@ #include void (*imx_idle)(void) = NULL; +void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int) = NULL; static void __iomem *wdog_base; -- 1.7.4.1