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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 426 | jermar | 1 | /* |
| 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 | |||
| 29 | #include <arch/mm/page.h> |
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| 1382 | decky | 30 | #include <arch/mm/tlb.h> |
| 684 | jermar | 31 | #include <genarch/mm/page_ht.h> |
| 1382 | decky | 32 | #include <mm/frame.h> |
| 33 | #include <bitops.h> |
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| 1410 | jermar | 34 | #include <debug.h> |
| 426 | jermar | 35 | |
| 36 | void page_arch_init(void) |
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| 37 | { |
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| 793 | jermar | 38 | page_mapping_operations = &ht_mapping_operations; |
| 426 | jermar | 39 | } |
| 1382 | decky | 40 | |
| 41 | __address hw_map(__address physaddr, size_t size) |
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| 42 | { |
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| 43 | unsigned int order; |
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| 1410 | jermar | 44 | int i; |
| 45 | |||
| 46 | struct { |
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| 47 | int pagesize; |
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| 48 | size_t increment; |
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| 49 | count_t count; |
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| 50 | } sizemap[] = { |
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| 51 | { PAGESIZE_8K, 0, 1 }, /* 8K */ |
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| 52 | { PAGESIZE_8K, PAGE_SIZE, 2 }, /* 16K */ |
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| 53 | { PAGESIZE_8K, PAGE_SIZE, 4 }, /* 32K */ |
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| 54 | { PAGESIZE_64K, 0, 1}, /* 64K */ |
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| 55 | { PAGESIZE_64K, 8*PAGE_SIZE, 2 }, /* 128K */ |
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| 56 | { PAGESIZE_64K, 8*PAGE_SIZE, 4 }, /* 256K */ |
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| 57 | { PAGESIZE_512K, 0, 1 }, /* 512K */ |
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| 58 | { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */ |
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| 59 | { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */ |
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| 60 | { PAGESIZE_4M, 0, 1 } /* 4M */ |
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| 61 | }; |
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| 1382 | decky | 62 | |
| 1410 | jermar | 63 | ASSERT(size <= 4*1024*1024); |
| 64 | |||
| 1382 | decky | 65 | if (size <= FRAME_SIZE) |
| 66 | order = 0; |
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| 67 | else |
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| 68 | order = (fnzb32(size - 1) + 1) - FRAME_WIDTH; |
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| 69 | |||
| 70 | __address virtaddr = PA2KA(PFN2ADDR(frame_alloc(order, FRAME_KA))); |
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| 1410 | jermar | 71 | |
| 72 | for (i = 0; i < sizemap[order].count; i++) |
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| 73 | dtlb_insert_mapping(virtaddr + i*sizemap[order].increment, |
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| 74 | physaddr + i*sizemap[order].increment, |
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| 75 | sizemap[order].pagesize, true, false); |
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| 1382 | decky | 76 | |
| 77 | return virtaddr; |
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| 78 | } |