nkeynes@976 | 1 | /**
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nkeynes@976 | 2 | * $Id: utlb.c 831 2008-08-13 10:32:00Z nkeynes $
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nkeynes@976 | 3 | *
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nkeynes@976 | 4 | * UTLB unit test support
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nkeynes@976 | 5 | *
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nkeynes@976 | 6 | * Copyright (c) 2006 Nathan Keynes.
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nkeynes@976 | 7 | *
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nkeynes@976 | 8 | * This program is free software; you can redistribute it and/or modify
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nkeynes@976 | 9 | * it under the terms of the GNU General Public License as published by
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nkeynes@976 | 10 | * the Free Software Foundation; either version 2 of the License, or
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nkeynes@976 | 11 | * (at your option) any later version.
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nkeynes@976 | 12 | *
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nkeynes@976 | 13 | * This program is distributed in the hope that it will be useful,
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nkeynes@976 | 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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nkeynes@976 | 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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nkeynes@976 | 16 | * GNU General Public License for more details.
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nkeynes@976 | 17 | */
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nkeynes@976 | 18 |
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nkeynes@976 | 19 | #include <assert.h>
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nkeynes@976 | 20 | #include "utlb.h"
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nkeynes@976 | 21 | #include "../lib.h"
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nkeynes@976 | 22 |
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nkeynes@976 | 23 | #define TLB_VALID 0x00000100
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nkeynes@976 | 24 | #define TLB_USERMODE 0x00000040
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nkeynes@976 | 25 | #define TLB_WRITABLE 0x00000020
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nkeynes@976 | 26 | #define TLB_SIZE_1K 0x00000000
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nkeynes@976 | 27 | #define TLB_SIZE_4K 0x00000010
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nkeynes@976 | 28 | #define TLB_SIZE_64K 0x00000080
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nkeynes@976 | 29 | #define TLB_SIZE_1M 0x00000090
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nkeynes@976 | 30 | #define TLB_CACHEABLE 0x00000008
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nkeynes@976 | 31 | #define TLB_DIRTY 0x00000004
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nkeynes@976 | 32 | #define TLB_SHARE 0x00000002
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nkeynes@976 | 33 | #define TLB_WRITETHRU 0x00000001
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nkeynes@976 | 34 |
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nkeynes@976 | 35 | #define PTEH 0xFF000000
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nkeynes@976 | 36 | #define PTEL 0xFF000004
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nkeynes@976 | 37 | #define TEA 0xFF00000C
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nkeynes@976 | 38 | #define MMUCR 0xFF000010
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nkeynes@976 | 39 |
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nkeynes@976 | 40 | void set_tlb_enabled( int flag )
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nkeynes@976 | 41 | {
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nkeynes@976 | 42 | uint32_t val = long_read( MMUCR );
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nkeynes@976 | 43 | if( flag ) {
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nkeynes@976 | 44 | val |= 1;
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nkeynes@976 | 45 | } else {
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nkeynes@976 | 46 | val &= ~1;
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nkeynes@976 | 47 | }
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nkeynes@976 | 48 | long_write( MMUCR, val );
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nkeynes@976 | 49 | }
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nkeynes@976 | 50 |
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nkeynes@976 | 51 | void invalidate_tlb()
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nkeynes@976 | 52 | {
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nkeynes@976 | 53 | uint32_t val = long_read( MMUCR );
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nkeynes@976 | 54 | long_write( MMUCR, val | 4 );
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nkeynes@976 | 55 | }
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nkeynes@976 | 56 |
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nkeynes@976 | 57 | void set_sv_enabled( int flag )
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nkeynes@976 | 58 | {
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nkeynes@976 | 59 | uint32_t val = long_read( MMUCR );
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nkeynes@976 | 60 | if( flag ) {
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nkeynes@976 | 61 | val |= 0x100;
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nkeynes@976 | 62 | } else {
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nkeynes@976 | 63 | val &= ~0x100;
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nkeynes@976 | 64 | }
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nkeynes@976 | 65 | long_write( MMUCR, val );
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nkeynes@976 | 66 | }
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nkeynes@976 | 67 |
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nkeynes@976 | 68 | void set_storequeue_protected( int flag )
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nkeynes@976 | 69 | {
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nkeynes@976 | 70 | uint32_t val = long_read( MMUCR );
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nkeynes@976 | 71 | if( flag ) {
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nkeynes@976 | 72 | val |= 0x200;
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nkeynes@976 | 73 | } else {
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nkeynes@976 | 74 | val &= ~0x200;
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nkeynes@976 | 75 | }
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nkeynes@976 | 76 | long_write( MMUCR, val );
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nkeynes@976 | 77 | }
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nkeynes@976 | 78 |
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nkeynes@976 | 79 |
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nkeynes@976 | 80 | void set_asid( int asid )
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nkeynes@976 | 81 | {
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nkeynes@976 | 82 | uint32_t val = long_read( PTEH ) & 0xFFFFFF00;
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nkeynes@976 | 83 | long_write( PTEH, val | asid );
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nkeynes@976 | 84 | }
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nkeynes@976 | 85 |
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nkeynes@976 | 86 |
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nkeynes@976 | 87 | void load_utlb_entry( int entryNo, uint32_t vpn, uint32_t ppn, int asid, uint32_t mode )
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nkeynes@976 | 88 | {
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nkeynes@976 | 89 | long_write( (0xF6000000 | (entryNo<<8)), vpn | asid );
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nkeynes@976 | 90 | long_write( (0xF7000000 | (entryNo<<8)), ppn | mode );
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nkeynes@976 | 91 | }
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nkeynes@976 | 92 |
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nkeynes@976 | 93 |
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nkeynes@976 | 94 | void check_utlb_access( uint32_t addr, uint32_t direct_addr, int mode )
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nkeynes@976 | 95 | {
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nkeynes@976 | 96 |
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nkeynes@976 | 97 |
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nkeynes@976 | 98 | }
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nkeynes@976 | 99 |
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