Rev 1809 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 1809 | Rev 1816 | ||
---|---|---|---|
Line 75... | Line 75... | ||
75 | } |
75 | } |
76 | 76 | ||
77 | paging_on(); |
77 | paging_on(); |
78 | } |
78 | } |
79 | 79 | ||
80 | - | ||
81 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
- | |
82 | { |
- | |
83 | if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH)) |
- | |
84 | panic("Unable to map physical memory %p (%d bytes)", physaddr, size) |
- | |
85 | - | ||
86 | uintptr_t virtaddr = PA2KA(last_frame); |
- | |
87 | pfn_t i; |
- | |
88 | for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) |
- | |
89 | page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE); |
- | |
90 | - | ||
91 | last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE); |
- | |
92 | - | ||
93 | return virtaddr; |
- | |
94 | } |
- | |
95 | - | ||
96 | void page_fault(int n, istate_t *istate) |
80 | void page_fault(int n, istate_t *istate) |
97 | { |
81 | { |
98 | uintptr_t page; |
82 | uintptr_t page; |
99 | pf_access_t access; |
83 | pf_access_t access; |
100 | 84 | ||
101 | page = read_cr2(); |
85 | page = read_cr2(); |
102 | 86 | ||
103 | if (istate->error_word & PFERR_CODE_RSVD) |
87 | if (istate->error_word & PFERR_CODE_RSVD) |
104 | panic("Reserved bit set in page directory.\n"); |
88 | panic("Reserved bit set in page directory.\n"); |
105 | 89 | ||
106 | if (istate->error_word & PFERR_CODE_RW) |
90 | if (istate->error_word & PFERR_CODE_RW) |
107 | access = PF_ACCESS_WRITE; |
91 | access = PF_ACCESS_WRITE; |
108 | else |
92 | else |
109 | access = PF_ACCESS_READ; |
93 | access = PF_ACCESS_READ; |
110 | 94 | ||
111 | if (as_page_fault(page, access, istate) == AS_PF_FAULT) { |
95 | if (as_page_fault(page, access, istate) == AS_PF_FAULT) { |
112 | fault_if_from_uspace(istate, "Page fault: %#x", page); |
96 | fault_if_from_uspace(istate, "Page fault: %#x", page); |
113 | 97 | ||
114 | PRINT_INFO_ERRCODE(istate); |
98 | PRINT_INFO_ERRCODE(istate); |
115 | printf("page fault address: %#x\n", page); |
99 | printf("page fault address: %#x\n", page); |
116 | panic("page fault\n"); |
100 | panic("page fault\n"); |
117 | } |
101 | } |
118 | } |
102 | } |
119 | 103 | ||
120 | /** @} |
104 | /** @} |
121 | */ |
105 | */ |