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
);
47 const struct mem_type
*get_mem_type(unsigned int type
);
49 extern void __flush_dcache_page(struct address_space
*mapping
, struct page
*page
);
52 * ARM specific vm_struct->flags bits.
55 /* (super)section-mapped I/O regions used by ioremap()/iounmap() */
56 #define VM_ARM_SECTION_MAPPING 0x80000000
58 /* permanent static mappings from iotable_init() */
59 #define VM_ARM_STATIC_MAPPING 0x40000000
62 #define VM_ARM_EMPTY_MAPPING 0x20000000
64 /* mapping type (attributes) for permanent static mappings */
65 #define VM_ARM_MTYPE(mt) ((mt) << 20)
66 #define VM_ARM_MTYPE_MASK (0x1f << 20)
68 /* consistent regions used by dma_alloc_attrs() */
69 #define VM_ARM_DMA_CONSISTENT 0x20000000
74 struct list_head list
;
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
);
83 #ifdef CONFIG_ZONE_DMA
84 extern phys_addr_t arm_dma_limit
;
86 #define arm_dma_limit ((phys_addr_t)~0)
89 extern phys_addr_t arm_lowmem_limit
;
91 void __init
bootmem_init(void);
92 void arm_mm_memblock_reserve(void);
93 void dma_contiguous_remap(void);