35,59 → 35,22 |
#ifndef KERN_PAGE_H_ |
#define KERN_PAGE_H_ |
|
#include <arch/mm/asid.h> |
#include <arch/types.h> |
#include <typedefs.h> |
#include <mm/as.h> |
#include <memstr.h> |
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#define PAGE_CACHEABLE_SHIFT 0 |
#define PAGE_NOT_CACHEABLE_SHIFT PAGE_CACHEABLE_SHIFT |
#define PAGE_PRESENT_SHIFT 1 |
#define PAGE_NOT_PRESENT_SHIFT PAGE_PRESENT_SHIFT |
#define PAGE_USER_SHIFT 2 |
#define PAGE_KERNEL_SHIFT PAGE_USER_SHIFT |
#define PAGE_READ_SHIFT 3 |
#define PAGE_WRITE_SHIFT 4 |
#define PAGE_EXEC_SHIFT 5 |
#define PAGE_GLOBAL_SHIFT 6 |
|
#define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
#define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
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#define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
#define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
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#define PAGE_USER (1<<PAGE_USER_SHIFT) |
#define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
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#define PAGE_READ (1<<PAGE_READ_SHIFT) |
#define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
#define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
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#define PAGE_GLOBAL (1<<PAGE_GLOBAL_SHIFT) |
|
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/** |
* Macro for computing page color. |
*/ |
#define PAGE_COLOR(va) (((va) >> PAGE_WIDTH) & ((1 << PAGE_COLOR_BITS) - 1)) |
|
/** Page fault access type. */ |
enum pf_access { |
PF_ACCESS_READ, |
PF_ACCESS_WRITE, |
PF_ACCESS_EXEC |
}; |
typedef enum pf_access pf_access_t; |
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/** Operations to manipulate page mappings. */ |
struct page_mapping_operations { |
void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, int |
flags); |
typedef struct { |
void (* mapping_insert)(as_t *as, uintptr_t page, uintptr_t frame, |
int flags); |
void (* mapping_remove)(as_t *as, uintptr_t page); |
pte_t *(* mapping_find)(as_t *as, uintptr_t page); |
}; |
typedef struct page_mapping_operations page_mapping_operations_t; |
} page_mapping_operations_t; |
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extern page_mapping_operations_t *page_mapping_operations; |
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94,8 → 57,8 |
extern void page_init(void); |
extern void page_table_lock(as_t *as, bool lock); |
extern void page_table_unlock(as_t *as, bool unlock); |
extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, int |
flags); |
extern void page_mapping_insert(as_t *as, uintptr_t page, uintptr_t frame, |
int flags); |
extern void page_mapping_remove(as_t *as, uintptr_t page); |
extern pte_t *page_mapping_find(as_t *as, uintptr_t page); |
extern pte_t *page_table_create(int flags); |