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author | KyongHo Cho <pullip.cho@samsung.com> | 2011-03-07 08:56:48 +0900 |
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committer | Kukjin Kim <kgene.kim@samsung.com> | 2011-03-15 21:37:25 +0900 |
commit | b34f003f271d477f61a980d280afc77929047440 (patch) | |
tree | 475069c7d6760669ad79eb1d2cc07dd981cdf143 /arch/arm/mach-exynos4 | |
parent | 721bbd4a06e83995ac1679d9cdca19a608fb0122 (diff) | |
download | linux-b34f003f271d477f61a980d280afc77929047440.tar.gz linux-b34f003f271d477f61a980d280afc77929047440.tar.bz2 linux-b34f003f271d477f61a980d280afc77929047440.zip |
ARM: EXYNOS4: Enhancement of System MMU driver
This patch includes the following enhancements for System MMU:
- Enhanced readability
- Removal of unused data structures or their members
- Simplified function definitions
- Corrections of some logical errors
- Full compliance with Linux coding style
- Simpler way of registering callback functions of System MMU faults
Signed-off-by: KyongHo Cho <pullip.cho@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-exynos4')
-rw-r--r-- | arch/arm/mach-exynos4/dev-sysmmu.c | 23 | ||||
-rw-r--r-- | arch/arm/mach-exynos4/include/mach/regs-sysmmu.h | 4 | ||||
-rw-r--r-- | arch/arm/mach-exynos4/include/mach/sysmmu.h | 88 |
3 files changed, 30 insertions, 85 deletions
diff --git a/arch/arm/mach-exynos4/dev-sysmmu.c b/arch/arm/mach-exynos4/dev-sysmmu.c index a10790a614ec..6889c9aa6493 100644 --- a/arch/arm/mach-exynos4/dev-sysmmu.c +++ b/arch/arm/mach-exynos4/dev-sysmmu.c @@ -15,6 +15,28 @@ #include <mach/map.h> #include <mach/irqs.h> +#include <mach/sysmmu.h> +#include <plat/s5p-clock.h> + +/* These names must be equal to the clock names in mach-exynos4/clock.c */ +const char *sysmmu_ips_name[EXYNOS4_SYSMMU_TOTAL_IPNUM] = { + "SYSMMU_MDMA" , + "SYSMMU_SSS" , + "SYSMMU_FIMC0" , + "SYSMMU_FIMC1" , + "SYSMMU_FIMC2" , + "SYSMMU_FIMC3" , + "SYSMMU_JPEG" , + "SYSMMU_FIMD0" , + "SYSMMU_FIMD1" , + "SYSMMU_PCIe" , + "SYSMMU_G2D" , + "SYSMMU_ROTATOR", + "SYSMMU_MDMA2" , + "SYSMMU_TV" , + "SYSMMU_MFC_L" , + "SYSMMU_MFC_R" , +}; static struct resource exynos4_sysmmu_resource[] = { [0] = { @@ -185,5 +207,4 @@ struct platform_device exynos4_device_sysmmu = { .num_resources = ARRAY_SIZE(exynos4_sysmmu_resource), .resource = exynos4_sysmmu_resource, }; - EXPORT_SYMBOL(exynos4_device_sysmmu); diff --git a/arch/arm/mach-exynos4/include/mach/regs-sysmmu.h b/arch/arm/mach-exynos4/include/mach/regs-sysmmu.h index b6aef863b9d6..68ff6ad08a2b 100644 --- a/arch/arm/mach-exynos4/include/mach/regs-sysmmu.h +++ b/arch/arm/mach-exynos4/include/mach/regs-sysmmu.h @@ -19,6 +19,10 @@ #define S5P_MMU_FLUSH 0x00C #define S5P_PT_BASE_ADDR 0x014 #define S5P_INT_STATUS 0x018 +#define S5P_INT_CLEAR 0x01C #define S5P_PAGE_FAULT_ADDR 0x024 +#define S5P_AW_FAULT_ADDR 0x028 +#define S5P_AR_FAULT_ADDR 0x02C +#define S5P_DEFAULT_SLAVE_ADDR 0x030 #endif /* __ASM_ARCH_REGS_SYSMMU_H */ diff --git a/arch/arm/mach-exynos4/include/mach/sysmmu.h b/arch/arm/mach-exynos4/include/mach/sysmmu.h index 1428adad8379..eff3dc37f3da 100644 --- a/arch/arm/mach-exynos4/include/mach/sysmmu.h +++ b/arch/arm/mach-exynos4/include/mach/sysmmu.h @@ -13,9 +13,6 @@ #ifndef __ASM_ARM_ARCH_SYSMMU_H #define __ASM_ARM_ARCH_SYSMMU_H __FILE__ -#define EXYNOS4_SYSMMU_TOTAL_IPNUM 16 -#define S5P_SYSMMU_TOTAL_IPNUM EXYNOS4_SYSMMU_TOTAL_IPNUM - enum exynos4_sysmmu_ips { SYSMMU_MDMA, SYSMMU_SSS, @@ -33,90 +30,13 @@ enum exynos4_sysmmu_ips { SYSMMU_TV, SYSMMU_MFC_L, SYSMMU_MFC_R, + EXYNOS4_SYSMMU_TOTAL_IPNUM, }; -static char *sysmmu_ips_name[EXYNOS4_SYSMMU_TOTAL_IPNUM] = { - "SYSMMU_MDMA" , - "SYSMMU_SSS" , - "SYSMMU_FIMC0" , - "SYSMMU_FIMC1" , - "SYSMMU_FIMC2" , - "SYSMMU_FIMC3" , - "SYSMMU_JPEG" , - "SYSMMU_FIMD0" , - "SYSMMU_FIMD1" , - "SYSMMU_PCIe" , - "SYSMMU_G2D" , - "SYSMMU_ROTATOR", - "SYSMMU_MDMA2" , - "SYSMMU_TV" , - "SYSMMU_MFC_L" , - "SYSMMU_MFC_R" , -}; - -typedef enum exynos4_sysmmu_ips sysmmu_ips; - -struct sysmmu_tt_info { - unsigned long *pgd; - unsigned long pgd_paddr; - unsigned long *pte; -}; - -struct sysmmu_controller { - const char *name; - - /* channels registers */ - void __iomem *regs; - - /* channel irq */ - unsigned int irq; - - sysmmu_ips ips; - - /* Translation Table Info. */ - struct sysmmu_tt_info *tt_info; - - struct resource *mem; - struct device *dev; - - /* SysMMU controller enable - true : enable */ - bool enable; -}; - -/** - * s5p_sysmmu_enable() - enable system mmu of ip - * @ips: The ip connected system mmu. - * - * This function enable system mmu to transfer address - * from virtual address to physical address - */ -int s5p_sysmmu_enable(sysmmu_ips ips); +#define S5P_SYSMMU_TOTAL_IPNUM EXYNOS4_SYSMMU_TOTAL_IPNUM -/** - * s5p_sysmmu_disable() - disable sysmmu mmu of ip - * @ips: The ip connected system mmu. - * - * This function disable system mmu to transfer address - * from virtual address to physical address - */ -int s5p_sysmmu_disable(sysmmu_ips ips); +extern const char *sysmmu_ips_name[EXYNOS4_SYSMMU_TOTAL_IPNUM]; -/** - * s5p_sysmmu_set_tablebase_pgd() - set page table base address to refer page table - * @ips: The ip connected system mmu. - * @pgd: The page table base address. - * - * This function set page table base address - * When system mmu transfer address from virtaul address to physical address, - * system mmu refer address information from page table - */ -int s5p_sysmmu_set_tablebase_pgd(sysmmu_ips ips, unsigned long pgd); +typedef enum exynos4_sysmmu_ips sysmmu_ips; -/** - * s5p_sysmmu_tlb_invalidate() - flush all TLB entry in system mmu - * @ips: The ip connected system mmu. - * - * This function flush all TLB entry in system mmu - */ -int s5p_sysmmu_tlb_invalidate(sysmmu_ips ips); #endif /* __ASM_ARM_ARCH_SYSMMU_H */ |