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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3862 | rimsky | 1 | /* |
| 2 | * Copyright (c) 2005 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 | /** @addtogroup sparc64mm |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** @file |
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| 33 | */ |
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| 34 | |||
| 35 | #ifndef KERN_sparc64_sun4u_PAGE_H_ |
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| 36 | #define KERN_sparc64_sun4u_PAGE_H_ |
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| 37 | |||
| 38 | #include <arch/mm/frame.h> |
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| 39 | |||
| 40 | /* |
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| 41 | * On the TLB and TSB level, we still use 8K pages, which are supported by the |
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| 42 | * MMU. |
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| 43 | */ |
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| 44 | #define MMU_PAGE_WIDTH MMU_FRAME_WIDTH |
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| 45 | #define MMU_PAGE_SIZE MMU_FRAME_SIZE |
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| 46 | |||
| 47 | /* |
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| 48 | * On the page table level, we use 16K pages. 16K pages are not supported by |
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| 49 | * the MMU but we emulate them with pairs of 8K pages. |
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| 50 | */ |
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| 51 | #define PAGE_WIDTH FRAME_WIDTH |
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| 52 | #define PAGE_SIZE FRAME_SIZE |
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| 53 | |||
| 54 | #define MMU_PAGES_PER_PAGE (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH)) |
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| 55 | |||
| 56 | #ifdef KERNEL |
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| 57 | |||
| 58 | #ifndef __ASM__ |
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| 59 | |||
| 60 | #include <arch/interrupt.h> |
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| 61 | |||
| 62 | extern uintptr_t physmem_base; |
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| 63 | |||
| 64 | #define KA2PA(x) (((uintptr_t) (x)) + physmem_base) |
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| 65 | #define PA2KA(x) (((uintptr_t) (x)) - physmem_base) |
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| 66 | |||
| 67 | typedef union { |
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| 68 | uintptr_t address; |
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| 69 | struct { |
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| 70 | uint64_t vpn : 51; /**< Virtual Page Number. */ |
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| 71 | unsigned offset : 13; /**< Offset. */ |
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| 72 | } __attribute__ ((packed)); |
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| 73 | } page_address_t; |
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| 74 | |||
| 75 | extern void page_arch_init(void); |
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| 76 | |||
| 77 | #endif /* !def __ASM__ */ |
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| 78 | |||
| 79 | #endif /* KERNEL */ |
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| 80 | |||
| 81 | #endif |
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| 82 | |||
| 83 | /** @} |
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| 84 | */ |