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| author | Pan Jiafei <Jiafei.Pan@nxp.com> | 2016-03-17 02:01:03 (GMT) |
|---|---|---|
| committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-09-25 07:25:39 (GMT) |
| commit | 037d42ef70d7ceb423e2787540d7ac68a6cc69e6 (patch) | |
| tree | f523244a2a6639c6896347598d1eda1f22199dc6 /arch/arm | |
| parent | 3bace0e42484ac3ffd3e441b40d4fb2632e9eed8 (diff) | |
| download | linux-037d42ef70d7ceb423e2787540d7ac68a6cc69e6.tar.xz | |
arm: add new non-shareable ioremap
Signed-off-by: Pan Jiafei <Jiafei.Pan@nxp.com>
Signed-off-by: Roy Pledge <roy.pledge@nxp.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/include/asm/io.h | 3 | ||||
| -rw-r--r-- | arch/arm/include/asm/mach/map.h | 4 | ||||
| -rw-r--r-- | arch/arm/mm/ioremap.c | 7 | ||||
| -rw-r--r-- | arch/arm/mm/mmu.c | 9 |
4 files changed, 21 insertions, 2 deletions
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h index 447021b..172a4f2 100644 --- a/arch/arm/include/asm/io.h +++ b/arch/arm/include/asm/io.h @@ -129,6 +129,7 @@ static inline u32 __raw_readl(const volatile void __iomem *addr) #define MT_DEVICE_NONSHARED 1 #define MT_DEVICE_CACHED 2 #define MT_DEVICE_WC 3 +#define MT_MEMORY_RW_NS 4 /* * types 4 onwards can be found in asm/mach/map.h and are undefined * for ioremap @@ -436,6 +437,8 @@ void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size); #define ioremap_wc ioremap_wc #define ioremap_wt ioremap_wc +void __iomem *ioremap_cache_ns(resource_size_t res_cookie, size_t size); + void iounmap(volatile void __iomem *iomem_cookie); #define iounmap iounmap diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h index 9b7c328..27f3df7 100644 --- a/arch/arm/include/asm/mach/map.h +++ b/arch/arm/include/asm/mach/map.h @@ -21,9 +21,9 @@ struct map_desc { unsigned int type; }; -/* types 0-3 are defined in asm/io.h */ +/* types 0-4 are defined in asm/io.h */ enum { - MT_UNCACHED = 4, + MT_UNCACHED = 5, MT_CACHECLEAN, MT_MINICLEAN, MT_LOW_VECTORS, diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c index ff0eed2..2f2f426 100644 --- a/arch/arm/mm/ioremap.c +++ b/arch/arm/mm/ioremap.c @@ -398,6 +398,13 @@ void __iomem *ioremap_wc(resource_size_t res_cookie, size_t size) } EXPORT_SYMBOL(ioremap_wc); +void __iomem *ioremap_cache_ns(resource_size_t res_cookie, size_t size) +{ + return arch_ioremap_caller(res_cookie, size, MT_MEMORY_RW_NS, + __builtin_return_address(0)); +} +EXPORT_SYMBOL(ioremap_cache_ns); + /* * Remap an arbitrary physical address space into the kernel virtual * address space as memory. Needed when the kernel wants to execute diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 5cbfd9f..62dea49 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -313,6 +313,13 @@ static struct mem_type mem_types[] __ro_after_init = { .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE, .domain = DOMAIN_KERNEL, }, + [MT_MEMORY_RW_NS] = { + .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY | + L_PTE_XN, + .prot_l1 = PMD_TYPE_TABLE, + .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE | PMD_SECT_XN, + .domain = DOMAIN_KERNEL, + }, [MT_ROM] = { .prot_sect = PMD_TYPE_SECT, .domain = DOMAIN_KERNEL, @@ -644,6 +651,7 @@ static void __init build_mem_type_table(void) } kern_pgprot |= PTE_EXT_AF; vecs_pgprot |= PTE_EXT_AF; + mem_types[MT_MEMORY_RW_NS].prot_pte |= PTE_EXT_AF | cp->pte; /* * Set PXN for user mappings @@ -672,6 +680,7 @@ static void __init build_mem_type_table(void) mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot; mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd; mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot; + mem_types[MT_MEMORY_RW_NS].prot_sect |= ecc_mask | cp->pmd; mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot; mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask; mem_types[MT_ROM].prot_sect |= cp->pmd; |