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Rev 1793 Rev 1841
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void page_arch_init(void)
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void page_arch_init(void)
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{
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{
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    page_mapping_operations = &ht_mapping_operations;
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    page_mapping_operations = &ht_mapping_operations;
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}
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}
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/** Map memory-mapped device into virtual memory.
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 *
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 * So far, only DTLB is used to map devices into memory.
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 * Chances are that there will be only a limited amount of
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 * devices that the kernel itself needs to lock in DTLB.
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 *
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 * @param physaddr Physical address of the page where the
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 *         device is located. Must be at least
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 *         page-aligned.
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 * @param size Size of the device's registers. Must not
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 *         exceed 4M and must include extra space
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 *         caused by the alignment.
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 *
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 * @return Virtual address of the page where the device is
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 *     mapped.
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 */
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uintptr_t hw_map(uintptr_t physaddr, size_t size)
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uintptr_t hw_map(uintptr_t physaddr, size_t size)
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{
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{
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    unsigned int order;
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    unsigned int order;
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    int i;
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    int i;
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        { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */
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        { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */
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        { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */
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        { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */
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        { PAGESIZE_4M, 0, 1 }           /* 4M */
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        { PAGESIZE_4M, 0, 1 }           /* 4M */
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    };
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    };
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    ASSERT(ALIGN_UP(physaddr, PAGE_SIZE) == physaddr);
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    ASSERT(size <= 4*1024*1024);
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    ASSERT(size <= 4*1024*1024);
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    if (size <= FRAME_SIZE)
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    if (size <= FRAME_SIZE)
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        order = 0;
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        order = 0;
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    else
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    else