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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 684 | jermar | 1 | /* |
| 2 | * Copyright (C) 2006 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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| 716 | vana | 30 | #include <arch/types.h> |
| 684 | jermar | 31 | #include <genarch/mm/page_ht.h> |
| 32 | #include <mm/page.h> |
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| 33 | #include <config.h> |
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| 34 | #include <panic.h> |
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| 35 | |||
| 716 | vana | 36 | __u64 thash(__u64 va); |
| 37 | __u64 thash(__u64 va) |
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| 38 | { |
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| 39 | __u64 ret; |
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| 40 | asm |
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| 41 | ( |
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| 42 | "thash %0=%1;;" |
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| 43 | :"=r"(ret) |
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| 44 | :"r" (va) |
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| 45 | ); |
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| 46 | |||
| 47 | return ret; |
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| 48 | } |
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| 715 | vana | 49 | |
| 716 | vana | 50 | __u64 ttag(__u64 va); |
| 51 | __u64 ttag(__u64 va) |
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| 52 | { |
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| 53 | __u64 ret; |
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| 54 | asm |
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| 55 | ( |
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| 56 | "ttag %0=%1;;" |
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| 57 | :"=r"(ret) |
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| 58 | :"r" (va) |
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| 59 | ); |
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| 60 | |||
| 61 | return ret; |
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| 62 | } |
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| 63 | |||
| 64 | |||
| 715 | vana | 65 | static void set_VHPT_environment(void) |
| 66 | { |
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| 67 | /* |
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| 68 | TODO: |
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| 69 | */ |
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| 70 | |||
| 71 | int i; |
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| 72 | |||
| 73 | /* First set up REGION REGISTER 0 */ |
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| 74 | |||
| 75 | region_register rr; |
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| 76 | rr.map.ve=0; /*Disable Walker*/ |
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| 77 | rr.map.ps=PAGE_WIDTH; |
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| 78 | rr.map.rid=REGION_RID_MAIN; |
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| 79 | |||
| 80 | asm |
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| 81 | ( |
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| 82 | "mov rr[r0]=%0;;" |
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| 83 | : |
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| 84 | :"r"(rr.word) |
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| 85 | ); |
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| 86 | |||
| 87 | /* And Invalidate the rest of REGION REGISTERS */ |
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| 88 | |||
| 89 | for(i=1;i<REGION_REGISTERS;i++) |
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| 90 | { |
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| 91 | rr.map.rid=REGION_RID_FIRST_INVALID+i-1; |
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| 92 | asm |
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| 93 | ( |
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| 94 | "mov r8=%1;;" |
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| 95 | "mov rr[r8]=%0;;" |
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| 96 | : |
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| 97 | :"r"(rr.word),"r"(i) |
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| 98 | :"r8" |
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| 99 | ); |
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| 100 | }; |
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| 101 | |||
| 102 | PTA_register pta; |
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| 103 | pta.map.ve=0; /*Disable Walker*/ |
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| 104 | pta.map.vf=1; /*Large entry format*/ |
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| 105 | pta.map.size=VHPT_WIDTH; |
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| 106 | pta.map.base=VHPT_BASE; |
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| 107 | |||
| 108 | |||
| 109 | /*Write PTA*/ |
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| 110 | asm |
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| 111 | ( |
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| 112 | "mov cr8=%0;;" |
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| 113 | : |
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| 114 | :"r"(pta.word) |
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| 115 | ); |
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| 116 | |||
| 117 | } |
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| 118 | |||
| 119 | |||
| 684 | jermar | 120 | void page_arch_init(void) |
| 121 | { |
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| 122 | page_operations = &page_ht_operations; |
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| 715 | vana | 123 | set_VHPT_environment(); |
| 684 | jermar | 124 | } |