| 30,22 → 30,31 |
|---|
| #define __PAGE_H__ |
| |
| #include <arch/types.h> |
| #include <arch/mm/page.h> |
| #include <typedefs.h> |
| |
| #define PAGE_NOT_CACHEABLE (0<<0) |
| #define PAGE_CACHEABLE (1<<0) |
| #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_PRESENT (0<<1) |
| #define PAGE_NOT_PRESENT (1<<1) |
| #define PAGE_NOT_CACHEABLE (0<<PAGE_CACHEABLE_SHIFT) |
| #define PAGE_CACHEABLE (1<<PAGE_CACHEABLE_SHIFT) |
| |
| #define PAGE_USER (1<<2) |
| #define PAGE_KERNEL (0<<2) |
| #define PAGE_PRESENT (0<<PAGE_PRESENT_SHIFT) |
| #define PAGE_NOT_PRESENT (1<<PAGE_PRESENT_SHIFT) |
| |
| #define PAGE_READ (1<<3) |
| #define PAGE_WRITE (1<<4) |
| #define PAGE_EXEC (1<<5) |
| #define PAGE_USER (1<<PAGE_USER_SHIFT) |
| #define PAGE_KERNEL (0<<PAGE_USER_SHIFT) |
| |
| #define PAGE_READ (1<<PAGE_READ_SHIFT) |
| #define PAGE_WRITE (1<<PAGE_WRITE_SHIFT) |
| #define PAGE_EXEC (1<<PAGE_EXEC_SHIFT) |
| |
| /* |
| * This is the generic 4-level page table interface. |
| * Architectures are supposed to implement *_ARCH macros. |
| 60,10 → 69,14 |
|---|
| #define PTL2_INDEX(vaddr) PTL2_INDEX_ARCH(vaddr) |
| #define PTL3_INDEX(vaddr) PTL3_INDEX_ARCH(vaddr) |
| |
| #define GET_PTL0_ADDRESS() GET_PTL0_ADDRESS_ARCH() |
| #define SET_PTL0_ADDRESS(ptl0) SET_PTL0_ADDRESS_ARCH(ptl0) |
| |
| /* |
| * These macros traverse the 4-level tree of page tables, |
| * each descending by one level. |
| */ |
| #define GET_PTL0_ADDRESS() GET_PTL0_ADDRESS_ARCH() |
| #define GET_PTL1_ADDRESS(ptl0, i) GET_PTL1_ADDRESS_ARCH(ptl0, i) |
| #define GET_PTL2_ADDRESS(ptl1, i) GET_PTL2_ADDRESS_ARCH(ptl1, i) |
| #define GET_PTL3_ADDRESS(ptl2, i) GET_PTL3_ADDRESS_ARCH(ptl2, i) |
| 73,6 → 86,7 |
|---|
| * These macros are provided to change shape of the 4-level |
| * tree of page tables on respective level. |
| */ |
| #define SET_PTL0_ADDRESS(ptl0) SET_PTL0_ADDRESS_ARCH(ptl0) |
| #define SET_PTL1_ADDRESS(ptl0, i, a) SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
| #define SET_PTL2_ADDRESS(ptl1, i, a) SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
| #define SET_PTL3_ADDRESS(ptl2, i, a) SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
| 79,6 → 93,14 |
|---|
| #define SET_FRAME_ADDRESS(ptl3, i, a) SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
| |
| /* |
| * These macros are provided to query various flags within the page tables. |
| */ |
| #define GET_PTL1_FLAGS(ptl0, i) GET_PTL1_FLAGS_ARCH(ptl0, i) |
| #define GET_PTL2_FLAGS(ptl1, i) GET_PTL2_FLAGS_ARCH(ptl1, i) |
| #define GET_PTL3_FLAGS(ptl2, i) GET_PTL3_FLAGS_ARCH(ptl2, i) |
| #define GET_FRAME_FLAGS(ptl3, i) GET_FRAME_FLAGS_ARCH(ptl3, i) |
| |
| /* |
| * These macros are provided to set/clear various flags within the page tables. |
| */ |
| #define SET_PTL1_FLAGS(ptl0, i, x) SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
| 86,6 → 108,7 |
|---|
| #define SET_PTL3_FLAGS(ptl2, i, x) SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
| #define SET_FRAME_FLAGS(ptl3, i, x) SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
| |
| #include <arch/mm/page.h> |
| |
| extern void page_init(void); |
| extern void map_page_to_frame(__address page, __address frame, int flags, __address root); |