projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 51c78eb3 JF |
1 | #ifndef _ASM_X86_PAGE_DEFS_H |
| 2 | #define _ASM_X86_PAGE_DEFS_H | |
| 3 | ||
| 4 | #include <linux/const.h> | |
| 45635ab5 | 5 | #include <linux/types.h> |
| 51c78eb3 JF |
6 | |
| 7 | /* PAGE_SHIFT determines the page size */ | |
| 8 | #define PAGE_SHIFT 12 | |
| 9 | #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | |
| 10 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
| 11 | ||
| a416e9e1 | 12 | #define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) |
| 51c78eb3 JF |
13 | #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) |
| 14 | ||
| 15 | /* Cast PAGE_MASK to a signed type so that it is sign-extended if | |
| 16 | virtual addresses are 32-bits but physical addresses are larger | |
| 17 | (ie, 32-bit PAE). */ | |
| 18 | #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) | |
| 19 | ||
| 51c78eb3 JF |
20 | #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) |
| 21 | #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) | |
| 22 | ||
| 23 | #define HPAGE_SHIFT PMD_SHIFT | |
| 24 | #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) | |
| 25 | #define HPAGE_MASK (~(HPAGE_SIZE - 1)) | |
| 26 | #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) | |
| 27 | ||
| 28 | #define HUGE_MAX_HSTATE 2 | |
| 29 | ||
| 30 | #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) | |
| 31 | ||
| 32 | #define VM_DATA_DEFAULT_FLAGS \ | |
| 33 | (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ | |
| 34 | VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | |
| 35 | ||
| a0215061 KC |
36 | #define __PHYSICAL_START ALIGN(CONFIG_PHYSICAL_START, \ |
| 37 | CONFIG_PHYSICAL_ALIGN) | |
| 38 | ||
| 39 | #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) | |
| 40 | ||
| 51c78eb3 JF |
41 | #ifdef CONFIG_X86_64 |
| 42 | #include <asm/page_64_types.h> | |
| 5d72b4fb | 43 | #define IOREMAP_MAX_ORDER (PUD_SHIFT) |
| 51c78eb3 JF |
44 | #else |
| 45 | #include <asm/page_32_types.h> | |
| 5d72b4fb | 46 | #define IOREMAP_MAX_ORDER (PMD_SHIFT) |
| 51c78eb3 JF |
47 | #endif /* CONFIG_X86_64 */ |
| 48 | ||
| 49 | #ifndef __ASSEMBLY__ | |
| 50 | ||
| 51c78eb3 | 51 | extern int devmem_is_allowed(unsigned long pagenr); |
| 51c78eb3 JF |
52 | |
| 53 | extern unsigned long max_low_pfn_mapped; | |
| 54 | extern unsigned long max_pfn_mapped; | |
| 55 | ||
| 4ce7a869 | 56 | static inline phys_addr_t get_max_mapped(void) |
| 45635ab5 | 57 | { |
| 4ce7a869 | 58 | return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; |
| 45635ab5 YL |
59 | } |
| 60 | ||
| 66520ebc | 61 | bool pfn_range_is_mapped(unsigned long start_pfn, unsigned long end_pfn); |
| dda56e13 | 62 | |
| 66aa230e JSR |
63 | extern unsigned long init_memory_mapping(unsigned long start, |
| 64 | unsigned long end); | |
| 65 | ||
| d8fc3afc | 66 | extern void initmem_init(void); |
| 66aa230e | 67 | |
| 51c78eb3 JF |
68 | #endif /* !__ASSEMBLY__ */ |
| 69 | ||
| 70 | #endif /* _ASM_X86_PAGE_DEFS_H */ |