1 /* $NetBSD: mips3_pte.h,v 1.32 2023/09/09 18:49:21 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1992, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 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. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 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. 23 * 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 34 * SUCH DAMAGE. 35 * 36 * from: Utah Hdr: pte.h 1.11 89/09/03 37 * 38 * from: @(#)pte.h 8.1 (Berkeley) 6/10/93 39 */ 40 41 #ifndef _MIPS_MIPS3_PTE_H_ 42 #define _MIPS_MIPS3_PTE_H_ 43 44 /* 45 * R4000 hardware page table entry 46 */ 47 48 #ifndef _LOCORE 49 #if 0 50 struct mips3_pte { 51 #if BYTE_ORDER == BIG_ENDIAN 52 unsigned int pg_prot:2, /* SW: access control */ 53 pg_pfnum:24, /* HW: core page frame number or 0 */ 54 pg_attr:3, /* HW: cache attribute */ 55 pg_m:1, /* HW: dirty bit */ 56 pg_v:1, /* HW: valid bit */ 57 pg_g:1; /* HW: ignore asid bit */ 58 #endif 59 #if BYTE_ORDER == LITTLE_ENDIAN 60 unsigned int pg_g:1, /* HW: ignore asid bit */ 61 pg_v:1, /* HW: valid bit */ 62 pg_m:1, /* HW: dirty bit */ 63 pg_attr:3, /* HW: cache attribute */ 64 pg_pfnum:24, /* HW: core page frame number or 0 */ 65 pg_prot:2; /* SW: access control */ 66 #endif 67 }; 68 #endif 69 #endif /* _LOCORE */ 70 71 #define MIPS3_PG_WIRED 0x80000000 /* SW */ 72 #define MIPS3_PG_RO 0x40000000 /* SW */ 73 74 #if PGSHIFT == 14 75 #define MIPS3_PG_SVPN (~0UL << 14) /* Software page no mask */ 76 #define MIPS3_PG_HVPN (~0UL << 15) /* Hardware page no mask */ 77 #define MIPS3_PG_ODDPG (MIPS3_PG_SVPN ^ MIPS3_PG_HVPN) 78 #elif PGSHIFT == 13 79 #ifdef MIPS3_4100 80 #error 8KB page size is not supported on the MIPS3_4100 81 #endif 82 #define MIPS3_PG_SVPN (~0UL << 13) /* Software page no mask */ 83 #define MIPS3_PG_HVPN (~0UL << 13) /* Hardware page no mask */ 84 #define MIPS3_PG_NEXT (1 << (12 - MIPS3_DEFAULT_PG_SHIFT)) 85 #elif PGSHIFT == 12 86 #define MIPS3_PG_SVPN (~0UL << 12) /* Software page no mask */ 87 #define MIPS3_PG_HVPN (~0UL << 13) /* Hardware page no mask */ 88 #define MIPS3_PG_ODDPG (MIPS3_PG_SVPN ^ MIPS3_PG_HVPN) 89 #endif 90 /* Odd even pte entry */ 91 #define MIPS3_PG_ASID 0x000000ff /* Address space ID */ 92 #define MIPS3_PG_G 0x00000001 /* Global; ignore ASID if in lo0 & lo1 */ 93 #define MIPS3_PG_V 0x00000002 /* Valid */ 94 #define MIPS3_PG_NV 0x00000000 95 #define MIPS3_PG_D 0x00000004 /* Dirty */ 96 #define MIPS3_PG_ATTR 0x0000003f 97 98 #define MIPS3_CCA_TO_PG(cca) ((cca) << 3) 99 #define MIPS3_PG_TO_CCA(cca) (((cca) >> 3) & 7) 100 101 #define MIPS3_XPHYS_UNCACHED MIPS_PHYS_TO_XKPHYS(2, 0) 102 #define MIPS3_XPHYS_ACC MIPS_PHYS_TO_XKPHYS(mips_options.mips3_cca_devmem, 0) 103 104 #define MIPS3_PG_UNCACHED MIPS3_CCA_TO_PG(2) 105 #define MIPS3_PG_WT MIPS3_CCA_TO_PG(5) 106 #define MIPS3_PG_ACC MIPS3_CCA_TO_PG(mips_options.mips3_cca_devmem) 107 #ifdef HPCMIPS_L1CACHE_DISABLE /* MIPS3_L1CACHE_DISABLE */ 108 #define MIPS3_DEFAULT_XKPHYS_CACHED MIPS3_DEFAULT_XKPHYS_UNCACHED 109 #define MIPS3_PG_CACHED MIPS3_PG_UNCACHED /* XXX: brain damaged!!! */ 110 #else /* HPCMIPS_L1CACHE_DISABLE */ 111 #define MIPS3_DEFAULT_XKPHYS_CACHED MIPS_PHYS_TO_XKPHYS(3, 0) 112 #define MIPS3_PG_CACHED mips_options.mips3_pg_cached 113 #define MIPS3_DEFAULT_PG_CACHED MIPS3_CCA_TO_PG(3) 114 #endif /* ! HPCMIPS_L1CACHE_DISABLE */ 115 #define MIPS3_PG_CACHEMODE MIPS3_CCA_TO_PG(7) 116 117 /* Write protected */ 118 #define MIPS3_PG_ROPAGE (MIPS3_PG_V | MIPS3_PG_RO | MIPS3_PG_CACHED) 119 120 /* Not wr-prot not clean */ 121 #define MIPS3_PG_RWPAGE (MIPS3_PG_V | MIPS3_PG_D | MIPS3_PG_CACHED) 122 123 /* Not wr-prot not clean not cached */ 124 #define MIPS3_PG_RWNCPAGE (MIPS3_PG_V | MIPS3_PG_D | MIPS3_PG_UNCACHED) 125 126 /* Not wr-prot not clean not cached, accel */ 127 #define MIPS3_PG_RWAPAGE (MIPS3_PG_V | MIPS3_PG_D | MIPS3_PG_ACC) 128 129 /* Not wr-prot but clean */ 130 #define MIPS3_PG_CWPAGE (MIPS3_PG_V | MIPS3_PG_CACHED) 131 132 /* Not wr-prot but clean not cached*/ 133 #define MIPS3_PG_CWNCPAGE (MIPS3_PG_V | MIPS3_PG_UNCACHED) 134 135 /* Not wr-prot but clean not cached, accel*/ 136 #define MIPS3_PG_CWAPAGE (MIPS3_PG_V | MIPS3_PG_ACC) 137 138 #define MIPS3_PG_IOPAGE(cca) \ 139 (MIPS3_PG_G | MIPS3_PG_V | MIPS3_PG_D | MIPS3_CCA_TO_PG(cca)) 140 #define MIPS3_PG_FRAME 0x3fffffc0 141 142 #define MIPS3_DEFAULT_PG_SHIFT 6 143 #define MIPS3_4100_PG_SHIFT 4 144 145 /* NEC Vr4100 CPUs have different PFN layout to support 1kbytes/page */ 146 #if defined(MIPS3_4100) 147 #define MIPS3_PG_SHIFT mips_options.mips3_pg_shift 148 #else 149 #define MIPS3_PG_SHIFT MIPS3_DEFAULT_PG_SHIFT 150 #endif 151 152 /* pte accessor macros */ 153 154 #define mips3_pfn_is_ext(x) ((x) & 0x3c000000) 155 #define mips3_paddr_to_tlbpfn(x) \ 156 (((paddr_t)(x) >> MIPS3_PG_SHIFT) & MIPS3_PG_FRAME) 157 #define mips3_tlbpfn_to_paddr(x) \ 158 ((paddr_t)((x) & MIPS3_PG_FRAME) << MIPS3_PG_SHIFT) 159 #define mips3_vad_to_vpn(x) ((vaddr_t)(x) & MIPS3_PG_SVPN) 160 #define mips3_vpn_to_vad(x) ((x) & MIPS3_PG_SVPN) 161 162 #define MIPS3_PTE_TO_PADDR(pte) (mips3_tlbpfn_to_paddr(pte)) 163 #define MIPS3_PAGE_IS_RDONLY(pte,va) \ 164 (pmap_is_page_ro_p(pmap_kernel(), mips_trunc_page(va), (pte))) 165 166 167 #define MIPS3_PG_SIZE_4K 0x00000000 168 #define MIPS3_PG_SIZE_16K 0x00006000 169 #define MIPS3_PG_SIZE_64K 0x0001e000 170 #define MIPS3_PG_SIZE_256K 0x0007e000 171 #define MIPS3_PG_SIZE_1M 0x001fe000 172 #define MIPS3_PG_SIZE_4M 0x007fe000 173 #define MIPS3_PG_SIZE_16M 0x01ffe000 174 #define MIPS3_PG_SIZE_64M 0x07ffe000 175 #define MIPS3_PG_SIZE_256M 0x1fffe000 176 177 #ifdef _KERNEL 178 #define MIPS3_PG_SIZE_MASK_TO_SIZE(pg_mask) \ 179 ((((pg_mask) | 0x00001fff) + 1) / 2) 180 181 #define MIPS3_PG_SIZE_TO_MASK(pg_size) \ 182 ((((pg_size) << (((pg_size) & 0x2aaaa) == 0)) - 1) & ~0x00001fff) 183 184 CTASSERT(MIPS3_PG_SIZE_TO_MASK(4096) == MIPS3_PG_SIZE_4K); 185 CTASSERT(MIPS3_PG_SIZE_TO_MASK(8192) == MIPS3_PG_SIZE_4K); 186 #endif 187 188 /* NEC Vr41xx uses different pagemask values. */ 189 #define MIPS4100_PG_SIZE_1K 0x00000000 190 #define MIPS4100_PG_SIZE_4K 0x00001800 191 #define MIPS4100_PG_SIZE_16K 0x00007800 192 #define MIPS4100_PG_SIZE_64K 0x0001f800 193 #define MIPS4100_PG_SIZE_256K 0x0007f800 194 195 #define MIPS4100_PG_SIZE_MASK_TO_SIZE(pg_mask) \ 196 ((((pg_mask) | 0x000007ff) + 1) / 2) 197 198 #define MIPS4100_PG_SIZE_TO_MASK(pg_size) \ 199 ((((pg_size) * 2) - 1) & ~0x000007ff) 200 201 #endif /* !_MIPS_MIPS3_PTE_H_ */ 202
Indexes created Sat Sep 20 22:09:52 GMT 2025