projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3ff1559e | 1 | #ifdef CONFIG_MMU |
| ed8fd218 JK |
2 | #include <linux/list.h> |
| 3 | #include <linux/vmalloc.h> | |
| 3ff1559e | 4 | |
| 5f0fbf9e | 5 | /* the upper-most page table pointer */ |
| 1b2e2b73 RK |
6 | extern pmd_t *top_pmd; |
| 7 | ||
| de27c308 RK |
8 | /* |
| 9 | * 0xffff8000 to 0xffffffff is reserved for any ARM architecture | |
| 10 | * specific hacks for copying pages efficiently, while 0xffff4000 | |
| 11 | * is reserved for VIPT aliasing flushing by generic code. | |
| 12 | * | |
| 13 | * Note that we don't allow VIPT aliasing caches with SMP. | |
| 14 | */ | |
| 15 | #define COPYPAGE_MINICACHE 0xffff8000 | |
| 16 | #define COPYPAGE_V6_FROM 0xffff8000 | |
| 17 | #define COPYPAGE_V6_TO 0xffffc000 | |
| 18 | /* PFN alias flushing, for VIPT caches */ | |
| 19 | #define FLUSH_ALIAS_START 0xffff4000 | |
| 20 | ||
| 67ece144 RK |
21 | static inline void set_top_pte(unsigned long va, pte_t pte) |
| 22 | { | |
| 60db4fcf RK |
23 | pte_t *ptep = pte_offset_kernel(top_pmd, va); |
| 24 | set_pte_ext(ptep, pte, 0); | |
| 67ece144 RK |
25 | local_flush_tlb_kernel_page(va); |
| 26 | } | |
| 27 | ||
| 0d31fe47 RK |
28 | static inline pte_t get_top_pte(unsigned long va) |
| 29 | { | |
| 60db4fcf RK |
30 | pte_t *ptep = pte_offset_kernel(top_pmd, va); |
| 31 | return *ptep; | |
| 0d31fe47 RK |
32 | } |
| 33 | ||
| 1b2e2b73 RK |
34 | static inline pmd_t *pmd_off_k(unsigned long virt) |
| 35 | { | |
| cc780af5 | 36 | return pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt); |
| 1b2e2b73 RK |
37 | } |
| 38 | ||
| b29e9f5e | 39 | struct mem_type { |
| f6e3354d | 40 | pteval_t prot_pte; |
| 442e70c0 CM |
41 | pmdval_t prot_l1; |
| 42 | pmdval_t prot_sect; | |
| b29e9f5e RK |
43 | unsigned int domain; |
| 44 | }; | |
| 45 | ||
| 46 | const struct mem_type *get_mem_type(unsigned int type); | |
| 47 | ||
| 7b0a1003 RK |
48 | extern void __flush_dcache_page(struct address_space *mapping, struct page *page); |
| 49 | ||
| 576d2f25 NP |
50 | /* |
| 51 | * ARM specific vm_struct->flags bits. | |
| 52 | */ | |
| 53 | ||
| 54 | /* (super)section-mapped I/O regions used by ioremap()/iounmap() */ | |
| 55 | #define VM_ARM_SECTION_MAPPING 0x80000000 | |
| 56 | ||
| 57 | /* permanent static mappings from iotable_init() */ | |
| 58 | #define VM_ARM_STATIC_MAPPING 0x40000000 | |
| 59 | ||
| a849088a RK |
60 | /* empty mapping */ |
| 61 | #define VM_ARM_EMPTY_MAPPING 0x20000000 | |
| 62 | ||
| 576d2f25 NP |
63 | /* mapping type (attributes) for permanent static mappings */ |
| 64 | #define VM_ARM_MTYPE(mt) ((mt) << 20) | |
| 65 | #define VM_ARM_MTYPE_MASK (0x1f << 20) | |
| 66 | ||
| e9da6e99 MS |
67 | /* consistent regions used by dma_alloc_attrs() */ |
| 68 | #define VM_ARM_DMA_CONSISTENT 0x20000000 | |
| 69 | ||
| ed8fd218 JK |
70 | |
| 71 | struct static_vm { | |
| 72 | struct vm_struct vm; | |
| 73 | struct list_head list; | |
| 74 | }; | |
| 75 | ||
| 76 | extern struct list_head static_vmlist; | |
| 77 | extern struct static_vm *find_static_vm_vaddr(void *vaddr); | |
| 78 | extern __init void add_static_vm_early(struct static_vm *svm); | |
| 79 | ||
| 3ff1559e RK |
80 | #endif |
| 81 | ||
| 022ae537 | 82 | #ifdef CONFIG_ZONE_DMA |
| 4986e5c7 | 83 | extern phys_addr_t arm_dma_limit; |
| 022ae537 | 84 | #else |
| 09b2ad13 | 85 | #define arm_dma_limit ((phys_addr_t)~0) |
| 022ae537 RK |
86 | #endif |
| 87 | ||
| c7909509 MS |
88 | extern phys_addr_t arm_lowmem_limit; |
| 89 | ||
| 8d717a52 | 90 | void __init bootmem_init(void); |
| 2778f620 | 91 | void arm_mm_memblock_reserve(void); |
| c7909509 | 92 | void dma_contiguous_remap(void); |