diff options
-rw-r--r-- | include/asm-generic/cache.h | 12 | ||||
-rw-r--r-- | include/asm-generic/cacheflush.h | 30 | ||||
-rw-r--r-- | include/asm-generic/mmu.h | 15 | ||||
-rw-r--r-- | include/asm-generic/mmu_context.h | 45 | ||||
-rw-r--r-- | include/asm-generic/page.h | 99 | ||||
-rw-r--r-- | include/asm-generic/pgalloc.h | 12 | ||||
-rw-r--r-- | include/asm-generic/segment.h | 9 | ||||
-rw-r--r-- | include/asm-generic/tlbflush.h | 18 |
8 files changed, 240 insertions, 0 deletions
diff --git a/include/asm-generic/cache.h b/include/asm-generic/cache.h new file mode 100644 index 000000000000..1bfcfe5c2237 --- /dev/null +++ b/include/asm-generic/cache.h | |||
@@ -0,0 +1,12 @@ | |||
1 | #ifndef __ASM_GENERIC_CACHE_H | ||
2 | #define __ASM_GENERIC_CACHE_H | ||
3 | /* | ||
4 | * 32 bytes appears to be the most common cache line size, | ||
5 | * so make that the default here. Architectures with larger | ||
6 | * cache lines need to provide their own cache.h. | ||
7 | */ | ||
8 | |||
9 | #define L1_CACHE_SHIFT 5 | ||
10 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) | ||
11 | |||
12 | #endif /* __ASM_GENERIC_CACHE_H */ | ||
diff --git a/include/asm-generic/cacheflush.h b/include/asm-generic/cacheflush.h new file mode 100644 index 000000000000..ba4ec39a1131 --- /dev/null +++ b/include/asm-generic/cacheflush.h | |||
@@ -0,0 +1,30 @@ | |||
1 | #ifndef __ASM_CACHEFLUSH_H | ||
2 | #define __ASM_CACHEFLUSH_H | ||
3 | |||
4 | /* Keep includes the same across arches. */ | ||
5 | #include <linux/mm.h> | ||
6 | |||
7 | /* | ||
8 | * The cache doesn't need to be flushed when TLB entries change when | ||
9 | * the cache is mapped to physical memory, not virtual memory | ||
10 | */ | ||
11 | #define flush_cache_all() do { } while (0) | ||
12 | #define flush_cache_mm(mm) do { } while (0) | ||
13 | #define flush_cache_dup_mm(mm) do { } while (0) | ||
14 | #define flush_cache_range(vma, start, end) do { } while (0) | ||
15 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) | ||
16 | #define flush_dcache_page(page) do { } while (0) | ||
17 | #define flush_dcache_mmap_lock(mapping) do { } while (0) | ||
18 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) | ||
19 | #define flush_icache_range(start, end) do { } while (0) | ||
20 | #define flush_icache_page(vma,pg) do { } while (0) | ||
21 | #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) | ||
22 | #define flush_cache_vmap(start, end) do { } while (0) | ||
23 | #define flush_cache_vunmap(start, end) do { } while (0) | ||
24 | |||
25 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ | ||
26 | memcpy(dst, src, len) | ||
27 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ | ||
28 | memcpy(dst, src, len) | ||
29 | |||
30 | #endif /* __ASM_CACHEFLUSH_H */ | ||
diff --git a/include/asm-generic/mmu.h b/include/asm-generic/mmu.h new file mode 100644 index 000000000000..4f4aa56d6b52 --- /dev/null +++ b/include/asm-generic/mmu.h | |||
@@ -0,0 +1,15 @@ | |||
1 | #ifndef __ASM_GENERIC_MMU_H | ||
2 | #define __ASM_GENERIC_MMU_H | ||
3 | |||
4 | /* | ||
5 | * This is the mmu.h header for nommu implementations. | ||
6 | * Architectures with an MMU need something more complex. | ||
7 | */ | ||
8 | #ifndef __ASSEMBLY__ | ||
9 | typedef struct { | ||
10 | struct vm_list_struct *vmlist; | ||
11 | unsigned long end_brk; | ||
12 | } mm_context_t; | ||
13 | #endif | ||
14 | |||
15 | #endif /* __ASM_GENERIC_MMU_H */ | ||
diff --git a/include/asm-generic/mmu_context.h b/include/asm-generic/mmu_context.h new file mode 100644 index 000000000000..a7eec910ba6c --- /dev/null +++ b/include/asm-generic/mmu_context.h | |||
@@ -0,0 +1,45 @@ | |||
1 | #ifndef __ASM_GENERIC_MMU_CONTEXT_H | ||
2 | #define __ASM_GENERIC_MMU_CONTEXT_H | ||
3 | |||
4 | /* | ||
5 | * Generic hooks for NOMMU architectures, which do not need to do | ||
6 | * anything special here. | ||
7 | */ | ||
8 | |||
9 | #include <asm-generic/mm_hooks.h> | ||
10 | |||
11 | struct task_struct; | ||
12 | struct mm_struct; | ||
13 | |||
14 | static inline void enter_lazy_tlb(struct mm_struct *mm, | ||
15 | struct task_struct *tsk) | ||
16 | { | ||
17 | } | ||
18 | |||
19 | static inline int init_new_context(struct task_struct *tsk, | ||
20 | struct mm_struct *mm) | ||
21 | { | ||
22 | return 0; | ||
23 | } | ||
24 | |||
25 | static inline void destroy_context(struct mm_struct *mm) | ||
26 | { | ||
27 | } | ||
28 | |||
29 | static inline void deactivate_mm(struct task_struct *task, | ||
30 | struct mm_struct *mm) | ||
31 | { | ||
32 | } | ||
33 | |||
34 | static inline void switch_mm(struct mm_struct *prev, | ||
35 | struct mm_struct *next, | ||
36 | struct task_struct *tsk) | ||
37 | { | ||
38 | } | ||
39 | |||
40 | static inline void activate_mm(struct mm_struct *prev_mm, | ||
41 | struct mm_struct *next_mm) | ||
42 | { | ||
43 | } | ||
44 | |||
45 | #endif /* __ASM_GENERIC_MMU_CONTEXT_H */ | ||
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h new file mode 100644 index 000000000000..75fec18cdc59 --- /dev/null +++ b/include/asm-generic/page.h | |||
@@ -0,0 +1,99 @@ | |||
1 | #ifndef __ASM_GENERIC_PAGE_H | ||
2 | #define __ASM_GENERIC_PAGE_H | ||
3 | /* | ||
4 | * Generic page.h implementation, for NOMMU architectures. | ||
5 | * This provides the dummy definitions for the memory management. | ||
6 | */ | ||
7 | |||
8 | #ifdef CONFIG_MMU | ||
9 | #error need to prove a real asm/page.h | ||
10 | #endif | ||
11 | |||
12 | |||
13 | /* PAGE_SHIFT determines the page size */ | ||
14 | |||
15 | #define PAGE_SHIFT 12 | ||
16 | #ifdef __ASSEMBLY__ | ||
17 | #define PAGE_SIZE (1 << PAGE_SHIFT) | ||
18 | #else | ||
19 | #define PAGE_SIZE (1UL << PAGE_SHIFT) | ||
20 | #endif | ||
21 | #define PAGE_MASK (~(PAGE_SIZE-1)) | ||
22 | |||
23 | #include <asm/setup.h> | ||
24 | |||
25 | #ifndef __ASSEMBLY__ | ||
26 | |||
27 | #define get_user_page(vaddr) __get_free_page(GFP_KERNEL) | ||
28 | #define free_user_page(page, addr) free_page(addr) | ||
29 | |||
30 | #define clear_page(page) memset((page), 0, PAGE_SIZE) | ||
31 | #define copy_page(to,from) memcpy((to), (from), PAGE_SIZE) | ||
32 | |||
33 | #define clear_user_page(page, vaddr, pg) clear_page(page) | ||
34 | #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) | ||
35 | |||
36 | /* | ||
37 | * These are used to make use of C type-checking.. | ||
38 | */ | ||
39 | typedef struct { | ||
40 | unsigned long pte; | ||
41 | } pte_t; | ||
42 | typedef struct { | ||
43 | unsigned long pmd[16]; | ||
44 | } pmd_t; | ||
45 | typedef struct { | ||
46 | unsigned long pgd; | ||
47 | } pgd_t; | ||
48 | typedef struct { | ||
49 | unsigned long pgprot; | ||
50 | } pgprot_t; | ||
51 | typedef struct page *pgtable_t; | ||
52 | |||
53 | #define pte_val(x) ((x).pte) | ||
54 | #define pmd_val(x) ((&x)->pmd[0]) | ||
55 | #define pgd_val(x) ((x).pgd) | ||
56 | #define pgprot_val(x) ((x).pgprot) | ||
57 | |||
58 | #define __pte(x) ((pte_t) { (x) } ) | ||
59 | #define __pmd(x) ((pmd_t) { (x) } ) | ||
60 | #define __pgd(x) ((pgd_t) { (x) } ) | ||
61 | #define __pgprot(x) ((pgprot_t) { (x) } ) | ||
62 | |||
63 | extern unsigned long memory_start; | ||
64 | extern unsigned long memory_end; | ||
65 | |||
66 | #endif /* !__ASSEMBLY__ */ | ||
67 | |||
68 | #ifdef CONFIG_KERNEL_RAM_BASE_ADDRESS | ||
69 | #define PAGE_OFFSET (CONFIG_KERNEL_RAM_BASE_ADDRESS) | ||
70 | #else | ||
71 | #define PAGE_OFFSET (0) | ||
72 | #endif | ||
73 | |||
74 | #ifndef __ASSEMBLY__ | ||
75 | |||
76 | #define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET)) | ||
77 | #define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) | ||
78 | |||
79 | #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) | ||
80 | #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) | ||
81 | |||
82 | #define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)) | ||
83 | #define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET) | ||
84 | |||
85 | #ifndef page_to_phys | ||
86 | #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) | ||
87 | #endif | ||
88 | |||
89 | #define pfn_valid(pfn) ((pfn) < max_mapnr) | ||
90 | |||
91 | #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ | ||
92 | ((void *)(kaddr) < (void *)memory_end)) | ||
93 | |||
94 | #endif /* __ASSEMBLY__ */ | ||
95 | |||
96 | #include <asm-generic/memory_model.h> | ||
97 | #include <asm-generic/getorder.h> | ||
98 | |||
99 | #endif /* __ASM_GENERIC_PAGE_H */ | ||
diff --git a/include/asm-generic/pgalloc.h b/include/asm-generic/pgalloc.h new file mode 100644 index 000000000000..9e429d08b1f8 --- /dev/null +++ b/include/asm-generic/pgalloc.h | |||
@@ -0,0 +1,12 @@ | |||
1 | #ifndef __ASM_GENERIC_PGALLOC_H | ||
2 | #define __ASM_GENERIC_PGALLOC_H | ||
3 | /* | ||
4 | * an empty file is enough for a nommu architecture | ||
5 | */ | ||
6 | #ifdef CONFIG_MMU | ||
7 | #error need to implement an architecture specific asm/pgalloc.h | ||
8 | #endif | ||
9 | |||
10 | #define check_pgt_cache() do { } while (0) | ||
11 | |||
12 | #endif /* __ASM_GENERIC_PGALLOC_H */ | ||
diff --git a/include/asm-generic/segment.h b/include/asm-generic/segment.h new file mode 100644 index 000000000000..5580eace622c --- /dev/null +++ b/include/asm-generic/segment.h | |||
@@ -0,0 +1,9 @@ | |||
1 | #ifndef __ASM_GENERIC_SEGMENT_H | ||
2 | #define __ASM_GENERIC_SEGMENT_H | ||
3 | /* | ||
4 | * Only here because we have some old header files that expect it... | ||
5 | * | ||
6 | * New architectures probably don't want to have their own version. | ||
7 | */ | ||
8 | |||
9 | #endif /* __ASM_GENERIC_SEGMENT_H */ | ||
diff --git a/include/asm-generic/tlbflush.h b/include/asm-generic/tlbflush.h new file mode 100644 index 000000000000..c7af037024c7 --- /dev/null +++ b/include/asm-generic/tlbflush.h | |||
@@ -0,0 +1,18 @@ | |||
1 | #ifndef __ASM_GENERIC_TLBFLUSH_H | ||
2 | #define __ASM_GENERIC_TLBFLUSH_H | ||
3 | /* | ||
4 | * This is a dummy tlbflush implementation that can be used on all | ||
5 | * nommu architectures. | ||
6 | * If you have an MMU, you need to write your own functions. | ||
7 | */ | ||
8 | #ifdef CONFIG_MMU | ||
9 | #error need to implement an architecture specific asm/tlbflush.h | ||
10 | #endif | ||
11 | |||
12 | static inline void flush_tlb_mm(struct mm_struct *mm) | ||
13 | { | ||
14 | BUG(); | ||
15 | } | ||
16 | |||
17 | |||
18 | #endif /* __ASM_GENERIC_TLBFLUSH_H */ | ||