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Rev | Author | Line No. | Line |
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684 | jermar | 1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
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747 | jermar | 3 | * Copyright (C) 2006 Jakub Vana |
684 | jermar | 4 | * All rights reserved. |
5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions |
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8 | * are met: |
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9 | * |
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10 | * - Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * - Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * - The name of the author may not be used to endorse or promote products |
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16 | * derived from this software without specific prior written permission. |
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17 | * |
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18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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28 | */ |
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29 | |||
30 | #include <arch/mm/page.h> |
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747 | jermar | 31 | #include <genarch/mm/page_ht.h> |
32 | #include <mm/asid.h> |
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716 | vana | 33 | #include <arch/types.h> |
728 | vana | 34 | #include <print.h> |
684 | jermar | 35 | #include <mm/page.h> |
747 | jermar | 36 | #include <mm/frame.h> |
684 | jermar | 37 | #include <config.h> |
38 | #include <panic.h> |
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746 | jermar | 39 | #include <arch/asm.h> |
747 | jermar | 40 | #include <arch/barrier.h> |
684 | jermar | 41 | |
747 | jermar | 42 | /** Initialize VHPT and region registers. */ |
43 | static void set_vhpt_environment(void) |
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716 | vana | 44 | { |
747 | jermar | 45 | region_register rr; |
46 | pta_register pta; |
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47 | int i; |
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716 | vana | 48 | |
747 | jermar | 49 | /* |
50 | * First set up kernel region register. |
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51 | */ |
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52 | rr.word = rr_read(VRN_KERNEL); |
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53 | rr.map.ve = 0; /* disable VHPT walker */ |
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54 | rr.map.ps = PAGE_WIDTH; |
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55 | rr.map.rid = ASID_KERNEL; |
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56 | rr_write(VRN_KERNEL, rr.word); |
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57 | srlz_i(); |
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58 | srlz_d(); |
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716 | vana | 59 | |
747 | jermar | 60 | /* |
61 | * And invalidate the rest of region register. |
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62 | */ |
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63 | for(i = 0; i < REGION_REGISTERS; i++) { |
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64 | /* skip kernel rr */ |
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65 | if (i == VRN_KERNEL) |
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66 | continue; |
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728 | vana | 67 | |
747 | jermar | 68 | rr.word == rr_read(i); |
69 | rr.map.rid = ASID_INVALID; |
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70 | rr_write(i, rr.word); |
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71 | srlz_i(); |
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72 | srlz_d(); |
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73 | } |
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726 | jermar | 74 | |
715 | vana | 75 | /* |
747 | jermar | 76 | * Allocate VHPT and invalidate all its entries. |
77 | */ |
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78 | page_ht = (pte_t *) frame_alloc(FRAME_KA, VHPT_WIDTH - FRAME_WIDTH, NULL); |
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79 | ht_invalidate_all(); |
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715 | vana | 80 | |
747 | jermar | 81 | /* |
82 | * Set up PTA register. |
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83 | */ |
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84 | pta.word = pta_read(); |
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85 | pta.map.ve = 0; /* disable VHPT walker */ |
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86 | pta.map.vf = 1; /* large entry format */ |
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87 | pta.map.size = VHPT_WIDTH; |
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88 | pta.map.base = (__address) page_ht; |
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89 | pta_write(pta.word); |
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90 | srlz_i(); |
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91 | srlz_d(); |
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92 | } |
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728 | vana | 93 | |
747 | jermar | 94 | /** Initialize ia64 virtual address translation subsystem. */ |
684 | jermar | 95 | void page_arch_init(void) |
96 | { |
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97 | page_operations = &page_ht_operations; |
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746 | jermar | 98 | pk_disable(); |
747 | jermar | 99 | set_vhpt_environment(); |
684 | jermar | 100 | } |