44,41 → 44,54 |
# define PA2KA(x) ((x) + 0x80000000) |
#endif |
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#define PTL0_ENTRIES_ARCH 0 |
/* |
* Implementation of generic 4-level page table interface, |
* the hardware Page Hash Table is used as cache. |
* |
* Page table layout: |
* - 32-bit virtual addressess |
* - Offset is 12 bits => pages are 4K long |
* - PTL0 has 1024 entries (10 bits) |
* - PTL1 is not used |
* - PTL2 is not used |
* - PLT3 has 1024 entries (10 bits) |
*/ |
|
#define PTL0_ENTRIES_ARCH 1024 |
#define PTL1_ENTRIES_ARCH 0 |
#define PTL2_ENTRIES_ARCH 0 |
#define PTL3_ENTRIES_ARCH 0 |
#define PTL3_ENTRIES_ARCH 1024 |
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#define PTL0_INDEX_ARCH(vaddr) 0 |
#define PTL0_INDEX_ARCH(vaddr) (((vaddr) >> 22) & 0x3ff) |
#define PTL1_INDEX_ARCH(vaddr) 0 |
#define PTL2_INDEX_ARCH(vaddr) 0 |
#define PTL3_INDEX_ARCH(vaddr) 0 |
#define PTL3_INDEX_ARCH(vaddr) (((vaddr) >> 12) & 0x3ff) |
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#define SET_PTL0_ADDRESS_ARCH(ptl0) |
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#define GET_PTL1_ADDRESS_ARCH(ptl0, i) ((pte_t *) 0) |
#define GET_PTL2_ADDRESS_ARCH(ptl1, i) ((pte_t *) 0) |
#define GET_PTL3_ADDRESS_ARCH(ptl2, i) ((pte_t *) 0) |
#define GET_FRAME_ADDRESS_ARCH(ptl3, i) ((pte_t *) 0) |
#define GET_PTL1_ADDRESS_ARCH(ptl0, i) (((pte_t *) (ptl0))[(i)].pfn << 12) |
#define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1) |
#define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2) |
#define GET_FRAME_ADDRESS_ARCH(ptl3, i) (((pte_t *) (ptl3))[(i)].pfn << 12) |
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#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) |
#define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *) (ptl0))[(i)].pfn = (a) >> 12) |
#define SET_PTL2_ADDRESS_ARCH(ptl1, i, a) |
#define SET_PTL3_ADDRESS_ARCH(ptl2, i, a) |
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) |
#define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *) (ptl3))[(i)].pfn = (a) >> 12) |
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#define GET_PTL1_FLAGS_ARCH(ptl0, i) 0 |
#define GET_PTL2_FLAGS_ARCH(ptl1, i) 0 |
#define GET_PTL3_FLAGS_ARCH(ptl2, i) 0 |
#define GET_FRAME_FLAGS_ARCH(ptl3, i) 0 |
#define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *) (ptl0), (index_t) (i)) |
#define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT |
#define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT |
#define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *) (ptl3), (index_t) (i)) |
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#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) |
#define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *) (ptl0), (index_t) (i), (x)) |
#define SET_PTL2_FLAGS_ARCH(ptl1, i, x) |
#define SET_PTL3_FLAGS_ARCH(ptl2, i, x) |
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) |
#define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *) (ptl3), (index_t) (i), (x)) |
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#define PTE_VALID_ARCH(p) 1 |
#define PTE_PRESENT_ARCH(p) 1 |
#define PTE_GET_FRAME_ARCH(p) 0 |
#define PTE_VALID_ARCH(pte) (*((__u32 *) (pte)) != 0) |
#define PTE_PRESENT_ARCH(pte) ((pte)->p != 0) |
#define PTE_GET_FRAME_ARCH(pte) ((pte)->pfn << 12) |
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#ifndef __ASM__ |
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86,6 → 99,28 |
#include <arch/mm/frame.h> |
#include <arch/types.h> |
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static inline int get_pt_flags(pte_t *pt, index_t i) |
{ |
pte_t *p = &pt[i]; |
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return ( |
(1 << PAGE_CACHEABLE_SHIFT) | |
((!p->p) << PAGE_PRESENT_SHIFT) | |
(1 << PAGE_USER_SHIFT) | |
(1 << PAGE_READ_SHIFT) | |
(1 << PAGE_WRITE_SHIFT) | |
(1 << PAGE_EXEC_SHIFT) |
); |
} |
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static inline void set_pt_flags(pte_t *pt, index_t i, int flags) |
{ |
pte_t *p = &pt[i]; |
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p->p = !(flags & PAGE_NOT_PRESENT); |
p->valid = 1; |
} |
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extern void page_arch_init(void); |
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#endif /* __ASM__ */ |