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426 jermar 1
/*
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 * Copyright (C) 2005 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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#include <arch/mm/page.h>
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#include <arch/mm/tlb.h>
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#include <genarch/mm/page_ht.h>
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#include <mm/frame.h>
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#include <bitops.h>
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void page_arch_init(void)
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{
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    page_mapping_operations = &ht_mapping_operations;
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}
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__address hw_map(__address physaddr, size_t size)
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{
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    unsigned int order;
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    if (size <= FRAME_SIZE)
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        order = 0;
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    else
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        order = (fnzb32(size - 1) + 1) - FRAME_WIDTH;
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    __address virtaddr = PA2KA(PFN2ADDR(frame_alloc(order, FRAME_KA)));
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    dtlb_insert_mapping(virtaddr, physaddr, PAGESIZE_512K, true, false);
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    dtlb_insert_mapping(virtaddr + 512 * 1024, physaddr + 512 * 1024, PAGESIZE_512K, true, false);
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    return virtaddr;
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}