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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 | } |