source: rtems/bsps/sparc64/include/arch/mm/page.h @ 3fe0711

Last change on this file since 3fe0711 was 0a9b4513, checked in by Andreas Dachsberger <andreas.dachsberger@…>, on Apr 1, 2019 at 10:22:37 AM

doxygen: bsps: Added remaining Sparc64 groups

  • Property mode set to 100644
File size: 2.5 KB
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1/*
2 * Copyright (c) 2005 Jakub Jermar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 *   notice, this list of conditions and the following disclaimer in the
13 *   documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 *   derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup RTEMSBSPsSPARC64mm     
30 * @{
31 */
32/** @file
33 */
34
35#ifndef KERN_sparc64_PAGE_H_
36#define KERN_sparc64_PAGE_H_
37
38#include <arch/mm/frame.h>
39
40/*
41 * On the TLB and TSB level, we still use 8K pages, which are supported by the
42 * MMU.
43 */
44#define MMU_PAGE_WIDTH  MMU_FRAME_WIDTH
45#define MMU_PAGE_SIZE   MMU_FRAME_SIZE
46
47/*
48 * On the page table level, we use 16K pages. 16K pages are not supported by
49 * the MMU but we emulate them with pairs of 8K pages.
50 */
51#define PAGE_WIDTH      FRAME_WIDTH
52#define PAGE_SIZE       FRAME_SIZE
53
54#define MMU_PAGES_PER_PAGE      (1 << (PAGE_WIDTH - MMU_PAGE_WIDTH))
55
56#ifdef KERNEL
57
58#ifndef __ASM__
59
60#include <arch/interrupt.h>
61
62extern uintptr_t physmem_base;
63
64#define KA2PA(x)        (((uintptr_t) (x)) + physmem_base)
65#define PA2KA(x)        (((uintptr_t) (x)) - physmem_base)
66
67typedef union {
68        uintptr_t address;
69        struct {
70                uint64_t vpn : 51;              /**< Virtual Page Number. */
71                unsigned offset : 13;           /**< Offset. */
72        } __attribute__ ((packed));
73} page_address_t;
74
75extern void page_arch_init(void);
76
77#endif /* !def __ASM__ */
78
79#endif /* KERNEL */
80
81#endif
82
83/** @}
84 */
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