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Rev 2222 Rev 2441
Line 81... Line 81...
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    if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
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    if (last_frame + ALIGN_UP(size, PAGE_SIZE) > KA2PA(KERNEL_ADDRESS_SPACE_END_ARCH))
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        panic("Unable to map physical memory %p (%d bytes)", physaddr, size)
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        panic("Unable to map physical memory %p (%d bytes)", physaddr, size)
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    uintptr_t virtaddr = PA2KA(last_frame);
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    uintptr_t virtaddr = PA2KA(last_frame);
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    pfn_t i;
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    pfn_t i;
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    for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++)
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    for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) {
- 
 
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        uintptr_t addr = PFN2ADDR(i);
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        page_mapping_insert(AS_KERNEL, virtaddr + PFN2ADDR(i), physaddr + PFN2ADDR(i), PAGE_NOT_CACHEABLE | PAGE_WRITE);
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        page_mapping_insert(AS_KERNEL, virtaddr + addr, physaddr + addr, PAGE_NOT_CACHEABLE | PAGE_WRITE);
- 
 
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    }
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    last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
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    last_frame = ALIGN_UP(last_frame + size, FRAME_SIZE);
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    return virtaddr;
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    return virtaddr;
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}
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}
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void page_fault(int n, istate_t *istate)
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void page_fault(int n __attribute__((unused)), istate_t *istate)
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{
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{
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    uintptr_t page;
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    uintptr_t page;
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    pf_access_t access;
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    pf_access_t access;
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    page = read_cr2();
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    page = read_cr2();
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    if (as_page_fault(page, access, istate) == AS_PF_FAULT) {
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    if (as_page_fault(page, access, istate) == AS_PF_FAULT) {
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        fault_if_from_uspace(istate, "Page fault: %#x", page);
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        fault_if_from_uspace(istate, "Page fault: %#x", page);
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        decode_istate(istate);
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        decode_istate(istate);
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        printf("page fault address: %#x\n", page);
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        printf("page fault address: %#lx\n", page);
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        panic("page fault\n");
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        panic("page fault\n");
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    }
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    }
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}
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}
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/** @}
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/** @}