2 #include <linux/list.h>
3 #include <linux/vmalloc.h>
5 /* the upper-most page table pointer */
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.
13 * Note that we don't allow VIPT aliasing caches with SMP.
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
21 static inline void set_top_pte(unsigned long va, pte_t pte)
23 pte_t *ptep = pte_offset_kernel(top_pmd, va);
24 set_pte_ext(ptep, pte, 0);
25 local_flush_tlb_kernel_page(va);
28 static inline pte_t get_top_pte(unsigned long va)
30 pte_t *ptep = pte_offset_kernel(top_pmd, va);
34 static inline pmd_t *pmd_off_k(unsigned long virt)
36 return pmd_offset(pud_offset(pgd_offset_k(virt), virt), virt);
46 const struct mem_type *get_mem_type(unsigned int type);
48 extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
51 * ARM specific vm_struct->flags bits.
54 /* (super)section-mapped I/O regions used by ioremap()/iounmap() */
55 #define VM_ARM_SECTION_MAPPING 0x80000000
57 /* permanent static mappings from iotable_init() */
58 #define VM_ARM_STATIC_MAPPING 0x40000000
61 #define VM_ARM_EMPTY_MAPPING 0x20000000
63 /* mapping type (attributes) for permanent static mappings */
64 #define VM_ARM_MTYPE(mt) ((mt) << 20)
65 #define VM_ARM_MTYPE_MASK (0x1f << 20)
67 /* consistent regions used by dma_alloc_attrs() */
68 #define VM_ARM_DMA_CONSISTENT 0x20000000
73 struct list_head list;
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);
82 #ifdef CONFIG_ZONE_DMA
83 extern phys_addr_t arm_dma_limit;
85 #define arm_dma_limit ((phys_addr_t)~0)
88 extern phys_addr_t arm_lowmem_limit;
90 void __init bootmem_init(void);
91 void arm_mm_memblock_reserve(void);
92 void dma_contiguous_remap(void);