diff options
Diffstat (limited to 'arch/sh/mm')
| -rw-r--r-- | arch/sh/mm/Makefile_32 | 2 | ||||
| -rw-r--r-- | arch/sh/mm/Makefile_64 | 2 | ||||
| -rw-r--r-- | arch/sh/mm/cache-sh2a.c | 8 | ||||
| -rw-r--r-- | arch/sh/mm/init.c | 12 | ||||
| -rw-r--r-- | arch/sh/mm/mmap.c | 31 | ||||
| -rw-r--r-- | arch/sh/mm/pg-sh4.c | 17 |
6 files changed, 63 insertions, 9 deletions
diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32 index 70e0906023cc..f066e76da204 100644 --- a/arch/sh/mm/Makefile_32 +++ b/arch/sh/mm/Makefile_32 @@ -2,7 +2,7 @@ # Makefile for the Linux SuperH-specific parts of the memory manager. # -obj-y := init.o extable_32.o consistent.o +obj-y := init.o extable_32.o consistent.o mmap.o ifndef CONFIG_CACHE_OFF cache-$(CONFIG_CPU_SH2) := cache-sh2.o diff --git a/arch/sh/mm/Makefile_64 b/arch/sh/mm/Makefile_64 index 0d92a8a3ac9a..9481d0f54efd 100644 --- a/arch/sh/mm/Makefile_64 +++ b/arch/sh/mm/Makefile_64 @@ -2,7 +2,7 @@ # Makefile for the Linux SuperH-specific parts of the memory manager. # -obj-y := init.o consistent.o +obj-y := init.o consistent.o mmap.o mmu-y := tlb-nommu.o pg-nommu.o extable_32.o mmu-$(CONFIG_MMU) := fault_64.o ioremap_64.o tlbflush_64.o tlb-sh5.o \ diff --git a/arch/sh/mm/cache-sh2a.c b/arch/sh/mm/cache-sh2a.c index 62c0c5f35120..24d86a794065 100644 --- a/arch/sh/mm/cache-sh2a.c +++ b/arch/sh/mm/cache-sh2a.c @@ -59,7 +59,7 @@ void __flush_purge_region(void *start, int size) for (v = begin; v < end; v+=L1_CACHE_BYTES) { ctrl_outl((v & CACHE_PHYSADDR_MASK), - CACHE_OC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008); + CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008); } back_to_cached(); local_irq_restore(flags); @@ -82,14 +82,14 @@ void __flush_invalidate_region(void *start, int size) /* I-cache invalidate */ for (v = begin; v < end; v+=L1_CACHE_BYTES) { ctrl_outl((v & CACHE_PHYSADDR_MASK), - CACHE_IC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008); + CACHE_IC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008); } #else for (v = begin; v < end; v+=L1_CACHE_BYTES) { ctrl_outl((v & CACHE_PHYSADDR_MASK), - CACHE_IC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008); + CACHE_IC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008); ctrl_outl((v & CACHE_PHYSADDR_MASK), - CACHE_OC_ADDRESS_ARRAY | (v & 0x000003f0) | 0x00000008); + CACHE_OC_ADDRESS_ARRAY | (v & 0x000007f0) | 0x00000008); } #endif back_to_cached(); diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c index 4abf00031dae..6cbef8caeb56 100644 --- a/arch/sh/mm/init.c +++ b/arch/sh/mm/init.c @@ -137,6 +137,7 @@ void __init page_table_range_init(unsigned long start, unsigned long end, void __init paging_init(void) { unsigned long max_zone_pfns[MAX_NR_ZONES]; + unsigned long vaddr; int nid; /* We don't need to map the kernel through the TLB, as @@ -148,10 +149,15 @@ void __init paging_init(void) * check for a null value. */ set_TTB(swapper_pg_dir); - /* Populate the relevant portions of swapper_pg_dir so that + /* + * Populate the relevant portions of swapper_pg_dir so that * we can use the fixmap entries without calling kmalloc. - * pte's will be filled in by __set_fixmap(). */ - page_table_range_init(FIXADDR_START, FIXADDR_TOP, swapper_pg_dir); + * pte's will be filled in by __set_fixmap(). + */ + vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK; + page_table_range_init(vaddr, 0, swapper_pg_dir); + + kmap_coherent_init(); memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c new file mode 100644 index 000000000000..8837d511710a --- /dev/null +++ b/arch/sh/mm/mmap.c @@ -0,0 +1,31 @@ +/* + * arch/sh/mm/mmap.c + * + * Copyright (C) 2008 Paul Mundt + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ +#include <linux/io.h> +#include <linux/mm.h> +#include <asm/page.h> + +/* + * You really shouldn't be using read() or write() on /dev/mem. This + * might go away in the future. + */ +int valid_phys_addr_range(unsigned long addr, size_t count) +{ + if (addr < __MEMORY_START) + return 0; + if (addr + count > __pa(high_memory)) + return 0; + + return 1; +} + +int valid_mmap_phys_addr_range(unsigned long pfn, size_t size) +{ + return 1; +} diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c index 38870e0fc182..2fe14da1f839 100644 --- a/arch/sh/mm/pg-sh4.c +++ b/arch/sh/mm/pg-sh4.c @@ -7,6 +7,7 @@ * Released under the terms of the GNU GPL v2.0. */ #include <linux/mm.h> +#include <linux/init.h> #include <linux/mutex.h> #include <linux/fs.h> #include <linux/highmem.h> @@ -16,6 +17,20 @@ #define CACHE_ALIAS (current_cpu_data.dcache.alias_mask) +#define kmap_get_fixmap_pte(vaddr) \ + pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)), (vaddr)), (vaddr)) + +static pte_t *kmap_coherent_pte; + +void __init kmap_coherent_init(void) +{ + unsigned long vaddr; + + /* cache the first coherent kmap pte */ + vaddr = __fix_to_virt(FIX_CMAP_BEGIN); + kmap_coherent_pte = kmap_get_fixmap_pte(vaddr); +} + static inline void *kmap_coherent(struct page *page, unsigned long addr) { enum fixed_addresses idx; @@ -34,6 +49,8 @@ static inline void *kmap_coherent(struct page *page, unsigned long addr) update_mmu_cache(NULL, vaddr, pte); + set_pte(kmap_coherent_pte - (FIX_CMAP_END - idx), pte); + return (void *)vaddr; } |