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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 | |||
1793 | jermar | 29 | /** @addtogroup sparc64mm |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
426 | jermar | 35 | #include <arch/mm/page.h> |
1382 | decky | 36 | #include <arch/mm/tlb.h> |
684 | jermar | 37 | #include <genarch/mm/page_ht.h> |
1382 | decky | 38 | #include <mm/frame.h> |
1793 | jermar | 39 | #include <arch/mm/frame.h> |
1382 | decky | 40 | #include <bitops.h> |
1410 | jermar | 41 | #include <debug.h> |
1793 | jermar | 42 | #include <align.h> |
426 | jermar | 43 | |
44 | void page_arch_init(void) |
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45 | { |
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793 | jermar | 46 | page_mapping_operations = &ht_mapping_operations; |
426 | jermar | 47 | } |
1382 | decky | 48 | |
1780 | jermar | 49 | uintptr_t hw_map(uintptr_t physaddr, size_t size) |
1382 | decky | 50 | { |
51 | unsigned int order; |
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1410 | jermar | 52 | int i; |
53 | |||
54 | struct { |
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55 | int pagesize; |
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56 | size_t increment; |
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57 | count_t count; |
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58 | } sizemap[] = { |
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59 | { PAGESIZE_8K, 0, 1 }, /* 8K */ |
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60 | { PAGESIZE_8K, PAGE_SIZE, 2 }, /* 16K */ |
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61 | { PAGESIZE_8K, PAGE_SIZE, 4 }, /* 32K */ |
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62 | { PAGESIZE_64K, 0, 1}, /* 64K */ |
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63 | { PAGESIZE_64K, 8*PAGE_SIZE, 2 }, /* 128K */ |
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64 | { PAGESIZE_64K, 8*PAGE_SIZE, 4 }, /* 256K */ |
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65 | { PAGESIZE_512K, 0, 1 }, /* 512K */ |
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66 | { PAGESIZE_512K, 64*PAGE_SIZE, 2 }, /* 1M */ |
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67 | { PAGESIZE_512K, 64*PAGE_SIZE, 4 }, /* 2M */ |
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68 | { PAGESIZE_4M, 0, 1 } /* 4M */ |
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69 | }; |
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1382 | decky | 70 | |
1410 | jermar | 71 | ASSERT(size <= 4*1024*1024); |
72 | |||
1382 | decky | 73 | if (size <= FRAME_SIZE) |
74 | order = 0; |
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75 | else |
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76 | order = (fnzb32(size - 1) + 1) - FRAME_WIDTH; |
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1793 | jermar | 77 | |
78 | /* |
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79 | * Use virtual addresses that are beyond the limit of physical memory. |
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80 | * Thus, the physical address space will not be wasted by holes created |
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81 | * by frame_alloc(). |
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82 | */ |
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83 | ASSERT(last_frame); |
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84 | uintptr_t virtaddr = ALIGN_UP(last_frame, 1<<(order + FRAME_WIDTH)); |
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85 | last_frame = ALIGN_UP(virtaddr + size, 1<<(order + FRAME_WIDTH)); |
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1382 | decky | 86 | |
1410 | jermar | 87 | for (i = 0; i < sizemap[order].count; i++) |
88 | dtlb_insert_mapping(virtaddr + i*sizemap[order].increment, |
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89 | physaddr + i*sizemap[order].increment, |
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90 | sizemap[order].pagesize, true, false); |
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1382 | decky | 91 | |
92 | return virtaddr; |
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93 | } |
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1702 | cejka | 94 | |
1793 | jermar | 95 | /** @} |
1702 | cejka | 96 | */ |