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00035 #ifndef __mips32_PAGE_H__
00036 #define __mips32_PAGE_H__
00037
00038 #include <arch/mm/frame.h>
00039
00040 #define PAGE_WIDTH FRAME_WIDTH
00041 #define PAGE_SIZE FRAME_SIZE
00042
00043 #ifndef __ASM__
00044 # define KA2PA(x) (((__address) (x)) - 0x80000000)
00045 # define PA2KA(x) (((__address) (x)) + 0x80000000)
00046 #else
00047 # define KA2PA(x) ((x) - 0x80000000)
00048 # define PA2KA(x) ((x) + 0x80000000)
00049 #endif
00050
00051 #ifdef KERNEL
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00070
00071 #define PTL0_ENTRIES_ARCH 64
00072 #define PTL1_ENTRIES_ARCH 0
00073 #define PTL2_ENTRIES_ARCH 0
00074 #define PTL3_ENTRIES_ARCH 4096
00075
00076 #define PTL0_INDEX_ARCH(vaddr) ((vaddr)>>26)
00077 #define PTL1_INDEX_ARCH(vaddr) 0
00078 #define PTL2_INDEX_ARCH(vaddr) 0
00079 #define PTL3_INDEX_ARCH(vaddr) (((vaddr)>>14) & 0xfff)
00080
00081 #define SET_PTL0_ADDRESS_ARCH(ptl0)
00082
00083 #define GET_PTL1_ADDRESS_ARCH(ptl0, i) (((pte_t *)(ptl0))[(i)].pfn<<12)
00084 #define GET_PTL2_ADDRESS_ARCH(ptl1, i) (ptl1)
00085 #define GET_PTL3_ADDRESS_ARCH(ptl2, i) (ptl2)
00086 #define GET_FRAME_ADDRESS_ARCH(ptl3, i) (((pte_t *)(ptl3))[(i)].pfn<<12)
00087
00088 #define SET_PTL1_ADDRESS_ARCH(ptl0, i, a) (((pte_t *)(ptl0))[(i)].pfn = (a)>>12)
00089 #define SET_PTL2_ADDRESS_ARCH(ptl1, i, a)
00090 #define SET_PTL3_ADDRESS_ARCH(ptl2, i, a)
00091 #define SET_FRAME_ADDRESS_ARCH(ptl3, i, a) (((pte_t *)(ptl3))[(i)].pfn = (a)>>12)
00092
00093 #define GET_PTL1_FLAGS_ARCH(ptl0, i) get_pt_flags((pte_t *)(ptl0), (index_t)(i))
00094 #define GET_PTL2_FLAGS_ARCH(ptl1, i) PAGE_PRESENT
00095 #define GET_PTL3_FLAGS_ARCH(ptl2, i) PAGE_PRESENT
00096 #define GET_FRAME_FLAGS_ARCH(ptl3, i) get_pt_flags((pte_t *)(ptl3), (index_t)(i))
00097
00098 #define SET_PTL1_FLAGS_ARCH(ptl0, i, x) set_pt_flags((pte_t *)(ptl0), (index_t)(i), (x))
00099 #define SET_PTL2_FLAGS_ARCH(ptl1, i, x)
00100 #define SET_PTL3_FLAGS_ARCH(ptl2, i, x)
00101 #define SET_FRAME_FLAGS_ARCH(ptl3, i, x) set_pt_flags((pte_t *)(ptl3), (index_t)(i), (x))
00102
00103 #define PTE_VALID_ARCH(pte) (*((__u32 *) (pte)) != 0)
00104 #define PTE_PRESENT_ARCH(pte) ((pte)->p != 0)
00105 #define PTE_GET_FRAME_ARCH(pte) ((pte)->pfn<<12)
00106 #define PTE_WRITABLE_ARCH(pte) ((pte)->w != 0)
00107 #define PTE_EXECUTABLE_ARCH(pte) 1
00108
00109 #ifndef __ASM__
00110
00111 #include <arch/mm/tlb.h>
00112 #include <mm/page.h>
00113 #include <arch/mm/frame.h>
00114 #include <arch/types.h>
00115
00116 static inline int get_pt_flags(pte_t *pt, index_t i)
00117 {
00118 pte_t *p = &pt[i];
00119
00120 return (
00121 (p->cacheable<<PAGE_CACHEABLE_SHIFT) |
00122 ((!p->p)<<PAGE_PRESENT_SHIFT) |
00123 (1<<PAGE_USER_SHIFT) |
00124 (1<<PAGE_READ_SHIFT) |
00125 ((p->w)<<PAGE_WRITE_SHIFT) |
00126 (1<<PAGE_EXEC_SHIFT) |
00127 (p->g<<PAGE_GLOBAL_SHIFT)
00128 );
00129
00130 }
00131
00132 static inline void set_pt_flags(pte_t *pt, index_t i, int flags)
00133 {
00134 pte_t *p = &pt[i];
00135
00136 p->cacheable = (flags & PAGE_CACHEABLE) != 0;
00137 p->p = !(flags & PAGE_NOT_PRESENT);
00138 p->g = (flags & PAGE_GLOBAL) != 0;
00139 p->w = (flags & PAGE_WRITE) != 0;
00140
00141
00142
00143
00144 p->soft_valid = 1;
00145 }
00146
00147 extern void page_arch_init(void);
00148
00149 #endif
00150
00151 #endif
00152
00153 #endif
00154