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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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1702 cejka 29 
 /** @addtogroup sparc64mm 
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 * @{
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 */
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/** @file
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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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#include <debug.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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uintptr_t hw_map(uintptr_t physaddr, size_t size)
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{
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    unsigned int order;
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    int i;
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    struct {
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        int pagesize;
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        size_t increment;
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        count_t count;
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    } sizemap[] = {
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        { PAGESIZE_8K, 0, 1 },          /* 8K */
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        { PAGESIZE_8K, PAGE_SIZE, 2 },      /* 16K */
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        { PAGESIZE_8K, PAGE_SIZE, 4 },      /* 32K */
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        { PAGESIZE_64K, 0, 1},          /* 64K */
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        { PAGESIZE_64K, 8*PAGE_SIZE, 2 },   /* 128K */
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        { PAGESIZE_64K, 8*PAGE_SIZE, 4 },   /* 256K */
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        { PAGESIZE_512K, 0, 1 },        /* 512K */
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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_4M, 0, 1 }           /* 4M */
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    };
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    ASSERT(size <= 4*1024*1024);
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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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    uintptr_t virtaddr = (uintptr_t) frame_alloc(order, FRAME_KA);
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    for (i = 0; i < sizemap[order].count; i++)
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        dtlb_insert_mapping(virtaddr + i*sizemap[order].increment,
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                    physaddr + i*sizemap[order].increment,
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                    sizemap[order].pagesize, true, false);
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    return virtaddr;
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}
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 /** @}
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 */
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