1 /* $OpenBSD: pte.h,v 1.10 2009/12/07 19:05:57 miod Exp $ */
4 * Copyright (c) 1988 University of Utah.
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
8 * This code is derived from software contributed to Berkeley by
9 * the Systems Programming Group of the University of Utah Computer
10 * Science Department and Ralph Campbell.
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 * from: Utah Hdr: pte.h 1.11 89/09/03
37 * from: @(#)pte.h 8.1 (Berkeley) 6/10/93
41 * R4000 hardware page table entry
47 * Structure defining an tlb entry data set.
57 typedef u_int32_t pt_entry_t; /* Mips page table entry */
58 #define NPTEPG (PMAP_L2SIZE / sizeof(pt_entry_t))
64 #define PG_SVPN 0xfffffffffffff000 /* Software page no mask */
65 #define PG_HVPN 0xffffffffffffe000 /* Hardware page no mask */
66 #define PG_ODDPG 0x0000000000001000 /* Odd even pte entry */
67 #elif PAGE_SHIFT == 14
68 #define PG_SVPN 0xffffffffffffc000 /* Software page no mask */
69 #define PG_HVPN 0xffffffffffff8000 /* Hardware page no mask */
70 #define PG_ODDPG 0x0000000000004000 /* Odd even pte entry */
72 #define PG_ASID 0x00000000000000ff /* Address space ID */
74 #define PG_RO 0x40000000 /* SW */
75 #define PG_G 0x00000001 /* HW */
76 #define PG_V 0x00000002
77 #define PG_NV 0x00000000
78 #define PG_M 0x00000004
79 #define PG_UNCACHED (CCA_NC << 3)
80 #define PG_CACHED_NC (CCA_NONCOHERENT << 3)
81 #define PG_CACHED_CE (CCA_COHERENT_EXCL << 3)
82 #define PG_CACHED_CEW (CCA_COHERENT_EXCLWRITE << 3)
83 #define PG_CACHED (CCA_CACHED << 3)
84 #define PG_CACHEMODE 0x00000038
85 #define PG_ATTR 0x0000003f
86 #define PG_ROPAGE (PG_V | PG_RO | PG_CACHED) /* Write protected */
87 #define PG_RWPAGE (PG_V | PG_M | PG_CACHED) /* Not w-prot not clean */
88 #define PG_CWPAGE (PG_V | PG_CACHED) /* Not w-prot but clean */
89 #define PG_IOPAGE (PG_G | PG_V | PG_M | PG_UNCACHED)
91 #define PG_FRAME 0x7ffffffffc0UL
93 #define PG_FRAME 0x3fffffc0
97 #define pfn_to_pad(pa) (((pa) & PG_FRAME) << PG_SHIFT)
98 #define vad_to_pfn(va) (((va) >> PG_SHIFT) & PG_FRAME)
100 #define PG_SIZE_4K 0x00000000
101 #define PG_SIZE_16K 0x00006000
102 #define PG_SIZE_64K 0x0001e000
103 #define PG_SIZE_256K 0x0007e000
104 #define PG_SIZE_1M 0x001fe000
105 #define PG_SIZE_4M 0x007fe000
106 #define PG_SIZE_16M 0x01ffe000
109 #define TLB_PAGE_MASK PG_SIZE_4K
110 #elif PAGE_SHIFT == 14
111 #define TLB_PAGE_MASK PG_SIZE_16K
114 #if defined(_KERNEL) && !defined(_LOCORE)
116 /* Kernel virtual address to page table entry */
117 #define kvtopte(va) \
118 (Sysmap + (((vaddr_t)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT))
119 /* User virtual address to pte page entry */
120 #define uvtopte(adr) (((adr) >> PGSHIFT) & (NPTEPG -1))
122 extern pt_entry_t *Sysmap; /* kernel pte table */
123 extern u_int Sysmapsize; /* number of pte's in Sysmap */