]>
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; |
4d9c5b89 | 41 | pteval_t prot_pte_s2; |
442e70c0 CM |
42 | pmdval_t prot_l1; |
43 | pmdval_t prot_sect; | |
b29e9f5e RK |
44 | unsigned int domain; |
45 | }; | |
46 | ||
47 | const struct mem_type *get_mem_type(unsigned int type); | |
48 | ||
7b0a1003 RK |
49 | extern void __flush_dcache_page(struct address_space *mapping, struct page *page); |
50 | ||
576d2f25 NP |
51 | /* |
52 | * ARM specific vm_struct->flags bits. | |
53 | */ | |
54 | ||
55 | /* (super)section-mapped I/O regions used by ioremap()/iounmap() */ | |
56 | #define VM_ARM_SECTION_MAPPING 0x80000000 | |
57 | ||
58 | /* permanent static mappings from iotable_init() */ | |
59 | #define VM_ARM_STATIC_MAPPING 0x40000000 | |
60 | ||
a849088a RK |
61 | /* empty mapping */ |
62 | #define VM_ARM_EMPTY_MAPPING 0x20000000 | |
63 | ||
576d2f25 NP |
64 | /* mapping type (attributes) for permanent static mappings */ |
65 | #define VM_ARM_MTYPE(mt) ((mt) << 20) | |
66 | #define VM_ARM_MTYPE_MASK (0x1f << 20) | |
67 | ||
e9da6e99 MS |
68 | /* consistent regions used by dma_alloc_attrs() */ |
69 | #define VM_ARM_DMA_CONSISTENT 0x20000000 | |
70 | ||
ed8fd218 JK |
71 | |
72 | struct static_vm { | |
73 | struct vm_struct vm; | |
74 | struct list_head list; | |
75 | }; | |
76 | ||
77 | extern struct list_head static_vmlist; | |
78 | extern struct static_vm *find_static_vm_vaddr(void *vaddr); | |
79 | extern __init void add_static_vm_early(struct static_vm *svm); | |
80 | ||
3ff1559e RK |
81 | #endif |
82 | ||
022ae537 | 83 | #ifdef CONFIG_ZONE_DMA |
4986e5c7 | 84 | extern phys_addr_t arm_dma_limit; |
4dcfa600 | 85 | extern unsigned long arm_dma_pfn_limit; |
022ae537 | 86 | #else |
09b2ad13 | 87 | #define arm_dma_limit ((phys_addr_t)~0) |
4dcfa600 | 88 | #define arm_dma_pfn_limit (~0ul >> PAGE_SHIFT) |
022ae537 RK |
89 | #endif |
90 | ||
c7909509 MS |
91 | extern phys_addr_t arm_lowmem_limit; |
92 | ||
8d717a52 | 93 | void __init bootmem_init(void); |
2778f620 | 94 | void arm_mm_memblock_reserve(void); |
c7909509 | 95 | void dma_contiguous_remap(void); |