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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3743 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2006 Jakub Jermar |
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| 3 | * Copyright (c) 2008 Pavel Rimsky |
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| 4 | * All rights reserved. |
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| 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 | /** @addtogroup sparc64interrupt |
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| 31 | * @{ |
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| 32 | */ |
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| 33 | /** |
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| 34 | * @file |
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| 35 | * @brief This file contains fast MMU trap handlers. |
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| 36 | */ |
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| 37 | |||
| 38 | #ifndef KERN_sparc64_sun4v_MMU_TRAP_H_ |
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| 39 | #define KERN_sparc64_sun4v_MMU_TRAP_H_ |
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| 40 | |||
| 41 | #include <arch/stack.h> |
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| 42 | #include <arch/sun4v/regdef.h> |
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| 43 | #include <arch/mm/tlb.h> |
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| 44 | #include <arch/mm/sun4v/mmu.h> |
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| 45 | #include <arch/mm/sun4v/tte.h> |
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| 46 | #include <arch/trap/regwin.h> |
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| 47 | |||
| 48 | #ifdef CONFIG_TSB |
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| 49 | #include <arch/mm/tsb.h> |
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| 50 | #endif |
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| 51 | |||
| 52 | #define TT_FAST_INSTRUCTION_ACCESS_MMU_MISS 0x64 |
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| 53 | #define TT_FAST_DATA_ACCESS_MMU_MISS 0x68 |
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| 54 | #define TT_FAST_DATA_ACCESS_PROTECTION 0x6c |
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| 55 | |||
| 56 | #define FAST_MMU_HANDLER_SIZE 128 |
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| 57 | |||
| 58 | #ifdef __ASM__ |
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| 59 | |||
| 60 | .macro FAST_INSTRUCTION_ACCESS_MMU_MISS_HANDLER |
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| 61 | .endm |
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| 62 | |||
| 63 | /* |
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| 64 | * So far it is here only to process the trap which occurs when the kernel |
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| 65 | * needs to access the bootinfo structure, which is placed in the bootloader |
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| 66 | * memory (i.e. before address 0x400000). |
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| 67 | */ |
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| 68 | .macro FAST_DATA_ACCESS_MMU_MISS_HANDLER tl |
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| 3748 | rimsky | 69 | save %sp, -STACK_WINDOW_SAVE_AREA_SIZE, %sp |
| 3743 | rimsky | 70 | set 0x8000, %o0 |
| 71 | set 0x0, %o1 |
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| 72 | setx 0x80000000804087c3, %g1, %o2 |
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| 73 | set 0x3, %o3 |
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| 74 | ta 0x83 |
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| 3748 | rimsky | 75 | restore %g0, 0, %g0 |
| 3743 | rimsky | 76 | retry |
| 77 | .endm |
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| 78 | |||
| 79 | .macro FAST_DATA_ACCESS_PROTECTION_HANDLER tl |
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| 80 | .endm |
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| 81 | |||
| 82 | #endif /* __ASM__ */ |
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| 83 | |||
| 84 | #endif |
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| 85 | |||
| 86 | /** @} |
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| 87 | */ |