| 1 | /*
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| 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 |
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| 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 |
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| 35 | #ifndef KERN_sparc64_PAGE_H_
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| 36 | #define KERN_sparc64_PAGE_H_
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| 37 |
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| 38 | #include <arch/mm/frame.h>
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| 39 |
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| 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 |
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| 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 |
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| 54 | #define MMU_PAGES_PER_PAGE (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
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| 55 |
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| 56 | /*
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| 57 | * With 16K pages, there is only one page color.
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| 58 | */
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| 59 | #define PAGE_COLOR_BITS 0 /**< 14 - 14; 2^14 == 16K == alias boundary. */
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| 60 |
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| 61 | #ifdef KERNEL
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| 62 |
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| 63 | #ifndef __ASM__
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| 64 |
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| 65 | #include <arch/interrupt.h>
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| 66 |
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| 67 | extern uintptr_t physmem_base;
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| 68 |
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| 69 | #define KA2PA(x) (((uintptr_t) (x)) + physmem_base)
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| 70 | #define PA2KA(x) (((uintptr_t) (x)) - physmem_base)
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| 71 |
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| 72 | typedef union {
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| 73 | uintptr_t address;
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| 74 | struct {
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| 75 | uint64_t vpn : 51; /**< Virtual Page Number. */
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| 76 | unsigned offset : 13; /**< Offset. */
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| 77 | } __attribute__ ((packed));
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| 78 | } page_address_t;
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| 79 |
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| 80 | extern void page_arch_init(void);
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| 81 |
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| 82 | #endif /* !def __ASM__ */
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| 83 |
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| 84 | #endif /* KERNEL */
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| 85 |
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| 86 | #endif
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| 87 |
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| 88 | /** @}
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| 89 | */
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