| 1 | /*
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| 2 | * Copyright (C) 2005 Jakub Jermar
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup sparc64mm
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #include <arch/mm/page.h>
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| 36 | #include <arch/mm/tlb.h>
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| 37 | #include <genarch/mm/page_ht.h>
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| 38 | #include <mm/frame.h>
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| 39 | #include <bitops.h>
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| 40 | #include <debug.h>
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| 41 |
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| 42 | void page_arch_init(void)
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| 43 | {
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| 44 | page_mapping_operations = &ht_mapping_operations;
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| 45 | }
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| 46 |
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| 47 | uintptr_t hw_map(uintptr_t physaddr, size_t size)
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| 48 | {
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| 49 | unsigned int order;
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| 50 | int i;
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| 51 |
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| 52 | struct {
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| 53 | int pagesize;
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| 54 | size_t increment;
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| 55 | count_t count;
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| 56 | } sizemap[] = {
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| 57 | { PAGESIZE_8K, 0, 1 }, /* 8K */
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| 58 | { PAGESIZE_8K, PAGE_SIZE, 2 }, /* 16K */
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| 59 | { PAGESIZE_8K, PAGE_SIZE, 4 }, /* 32K */
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| 60 | { PAGESIZE_64K, 0, 1}, /* 64K */
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| 61 | { PAGESIZE_64K, 8*PAGE_SIZE, 2 }, /* 128K */
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| 62 | { PAGESIZE_64K, 8*PAGE_SIZE, 4 }, /* 256K */
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| 63 | { PAGESIZE_512K, 0, 1 }, /* 512K */
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| 64 | { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */
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| 65 | { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */
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| 66 | { PAGESIZE_4M, 0, 1 } /* 4M */
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| 67 | };
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| 68 |
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| 69 | ASSERT(size <= 4*1024*1024);
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| 70 |
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| 71 | if (size <= FRAME_SIZE)
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| 72 | order = 0;
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| 73 | else
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| 74 | order = (fnzb32(size - 1) + 1) - FRAME_WIDTH;
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| 75 |
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| 76 | uintptr_t virtaddr = (uintptr_t) frame_alloc(order, FRAME_KA);
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| 77 |
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| 78 | for (i = 0; i < sizemap[order].count; i++)
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| 79 | dtlb_insert_mapping(virtaddr + i*sizemap[order].increment,
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| 80 | physaddr + i*sizemap[order].increment,
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| 81 | sizemap[order].pagesize, true, false);
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| 82 |
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| 83 | return virtaddr;
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| 84 | }
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| 85 |
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| 86 | /** @}
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| 87 | */
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| 88 |
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