1 /* $NetBSD: param.h,v 1.27 1996/10/22 19:11:19 pk Exp $ */ 2 3 /* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the University of 27 * California, Berkeley and its contributors. 28 * 4. Neither the name of the University nor the names of its contributors 29 * may be used to endorse or promote products derived from this software 30 * without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 33 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 34 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 35 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 36 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 37 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 38 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 40 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 41 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 42 * SUCH DAMAGE. 43 * 44 * @(#)param.h 8.1 (Berkeley) 6/11/93 45 */ 46 /* 47 * Sun4M support by Aaron Brown, Harvard University. 48 * Changes Copyright (c) 1995 The President and Fellows of Harvard College. 49 * All rights reserved. 50 */ 51 #define _MACHINE sparc 52 #define MACHINE "sparc" 53 #define _MACHINE_ARCH sparc 54 #define MACHINE_ARCH "sparc" 55 #define MID_MACHINE MID_SPARC 56 57 #ifdef _KERNEL /* XXX */ 58 #ifndef _LOCORE /* XXX */ 59 #include <machine/cpu.h> /* XXX */ 60 #endif /* XXX */ 61 #endif /* XXX */ 62 63 /* 64 * Round p (pointer or byte index) up to a correctly-aligned value for 65 * the machine's strictest data type. The result is u_int and must be 66 * cast to any desired pointer type. 67 */ 68 #define ALIGNBYTES 7 69 #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES) 70 71 #define SUN4_PGSHIFT 13 /* for a sun4 machine */ 72 #define SUN4CM_PGSHIFT 12 /* for a sun4c or sun4m machine */ 73 74 /* 75 * The following variables are always defined and initialized (in locore) 76 * so independently compiled modules (e.g. LKMs) can be used irrespective 77 * of the `options SUN4?' combination a particular kernel was configured with. 78 * See also the definitions of NBPG, PGOFSET and PGSHIFT below. 79 */ 80 #if defined(_KERNEL) && !defined(_LOCORE) 81 extern int nbpg, pgofset, pgshift; 82 #endif 83 84 #define KERNBASE 0xf8000000 /* start of kernel virtual space */ 85 #define KERNTEXTOFF 0xf8004000 /* start of kernel text */ 86 87 #define DEV_BSIZE 512 88 #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ 89 #define BLKDEV_IOSIZE 2048 90 #define MAXPHYS (64 * 1024) 91 92 #define CLSIZE 1 93 #define CLSIZELOG2 0 94 95 /* NOTE: SSIZE must be multiple of CLSIZE */ 96 #define SSIZE 1 /* initial stack size in pages */ 97 #define USPACE 8192 98 99 /* 100 * Constants related to network buffer management. 101 * MCLBYTES must be no larger than CLBYTES (the software page size), and, 102 * on machines that exchange pages of input or output buffers with mbuf 103 * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple 104 * of the hardware page size. 105 */ 106 #define MSIZE 128 /* size of an mbuf */ 107 #define MCLBYTES 2048 /* enough for whole Ethernet packet */ 108 #define MCLSHIFT 11 /* log2(MCLBYTES) */ 109 #define MCLOFSET (MCLBYTES - 1) 110 111 #ifndef NMBCLUSTERS 112 #ifdef GATEWAY 113 #define NMBCLUSTERS 512 /* map size, max cluster allocation */ 114 #else 115 #define NMBCLUSTERS 256 /* map size, max cluster allocation */ 116 #endif 117 #endif 118 119 /* 120 * Size of kernel malloc arena in CLBYTES-sized logical pages. 121 */ 122 #ifndef NKMEMCLUSTERS 123 #define NKMEMCLUSTERS (6 * 1024 * 1024 / CLBYTES) 124 #endif 125 126 /* pages ("clicks") to disk blocks */ 127 #define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT)) 128 #define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT)) 129 130 /* pages to bytes */ 131 #define ctob(x) ((x) << PGSHIFT) 132 #define btoc(x) (((x) + PGOFSET) >> PGSHIFT) 133 134 /* bytes to disk blocks */ 135 #define btodb(x) ((x) >> DEV_BSHIFT) 136 #define dbtob(x) ((x) << DEV_BSHIFT) 137 138 /* 139 * Map a ``block device block'' to a file system block. 140 * This should be device dependent, and should use the bsize 141 * field from the disk label. 142 * For now though just use DEV_BSIZE. 143 */ 144 #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE)) 145 146 /* 147 * dvmamap manages a range of DVMA addresses intended to create double 148 * mappings of physical memory. In a way, `dvmamap' is a submap of the 149 * VM map `phys_map'. The difference is the use of the `resource map' 150 * routines to manage page allocation, allowing DVMA addresses to be 151 * allocated and freed from within interrupt routines. 152 * 153 * Note that `phys_map' can still be used to allocate memory-backed pages 154 * in DVMA space. 155 */ 156 #ifdef _KERNEL 157 #ifndef _LOCORE 158 extern vm_offset_t dvma_base; 159 extern vm_offset_t dvma_end; 160 extern struct map *dvmamap; 161 /* 162 * The dvma resource map is defined in page units, which are numbered 1 to N. 163 * Use these macros to convert to/from virtual addresses. 164 */ 165 #define rctov(n) (ctob(((n)-1))+dvma_base) 166 #define vtorc(v) ((btoc((v)-dvma_base))+1) 167 168 extern caddr_t kdvma_mapin __P((caddr_t, int, int)); 169 extern caddr_t dvma_malloc __P((size_t, void *, int)); 170 extern void dvma_free __P((caddr_t, size_t, void *)); 171 172 extern void delay __P((unsigned int)); 173 #define DELAY(n) delay(n) 174 175 extern int cputyp; 176 extern int cpumod; 177 extern int mmumod; 178 179 #endif /* _LOCORE */ 180 #endif /* _KERNEL */ 181 182 /* 183 * Values for the cputyp variable. 184 */ 185 #define CPU_SUN4 0 186 #define CPU_SUN4C 1 187 #define CPU_SUN4M 2 188 /* 189 * Values for cpumod (cpu model) variable. XXX currently valid only for sun4 190 * or Sun4M 191 */ 192 #define SUN4_100 0x22 193 #define SUN4_200 0x21 194 #define SUN4_300 0x23 195 #define SUN4_400 0x24 196 #define SUN4M_MS 0x04 /* MicroSPARC-II */ 197 #define SUN4M_SS 0x40 /* Generic SuperSPARC */ 198 #define SUN4M_HS 0x10 /* Generic ROSS sparc product (HyperSPARC) */ 199 #define SUN4M_RT620 0x1f /* Ross HyperSPARC RT620 */ 200 #define SUN4M_STP1020N 0x41 /* TI SuperSPARC STP1020N */ 201 #define SUN4M_STP1020P 0x40 /* TI SuperSPARC STP1020P */ 202 #define SUN4M_STP1020A 0x40 /* TI SuperSPARC STP1020A */ 203 204 /* Values for mmumod (mmu model) variable. Valid only for Sun4M */ 205 #define SUN4M_MMU_HS 0x1 /* ROSS HyperSparc */ 206 #define SUN4M_MMU_SS 0x0 /* TI SuperSPARC */ 207 #define SUN4M_MMU_MS1 0x4 /* MicroSPARC-I (??? XXX) */ 208 #define SUN4M_MMU_MS 0x0 /* MicroSPARC-II (ugh, conflicts w/SS) */ 209 210 /* 211 * Shorthand CPU-type macros. Enumerate all eight cases. 212 * Let compiler optimize away code conditional on constants. 213 * 214 * On a sun4 machine, the page size is 8192, while on a sun4c and sun4m 215 * it is 4096. Therefore, in the (SUN4 && (SUN4C || SUN4M)) cases below, 216 * NBPG, PGOFSET and PGSHIFT are defined as variables which are initialized 217 * early in locore.s after the machine type has been detected. 218 * 219 * Note that whenever the macros defined below evaluate to expressions 220 * involving variables, the kernel will perform slighly worse due to the 221 * extra memory references they'll generate. 222 */ 223 #if defined(SUN4M) && defined(SUN4C) && defined(SUN4) 224 # define CPU_ISSUN4M (cputyp == CPU_SUN4M) 225 # define CPU_ISSUN4C (cputyp == CPU_SUN4C) 226 # define CPU_ISSUN4 (cputyp == CPU_SUN4) 227 # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C) 228 # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) 229 # define NBPG nbpg 230 # define PGOFSET pgofset 231 # define PGSHIFT pgshift 232 #elif defined(SUN4M) && defined(SUN4C) && !defined(SUN4) 233 # define CPU_ISSUN4M (cputyp == CPU_SUN4M) 234 # define CPU_ISSUN4C (cputyp == CPU_SUN4C) 235 # define CPU_ISSUN4 (0) 236 # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4C) 237 # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) 238 # define NBPG 4096 239 # define PGOFSET (NBPG-1) 240 # define PGSHIFT SUN4CM_PGSHIFT 241 #elif defined(SUN4M) && !defined(SUN4C) && defined(SUN4) 242 # define CPU_ISSUN4M (cputyp == CPU_SUN4M) 243 # define CPU_ISSUN4C (0) 244 # define CPU_ISSUN4 (cputyp == CPU_SUN4) 245 # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4) 246 # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4M) 247 # define NBPG nbpg 248 # define PGOFSET pgofset 249 # define PGSHIFT pgshift 250 #elif defined(SUN4M) && !defined(SUN4C) && !defined(SUN4) 251 # define CPU_ISSUN4M (1) 252 # define CPU_ISSUN4C (0) 253 # define CPU_ISSUN4 (0) 254 # define CPU_ISSUN4OR4C (0) 255 # define CPU_ISSUN4COR4M (1) 256 # define NBPG 4096 257 # define PGOFSET (NBPG-1) 258 # define PGSHIFT SUN4CM_PGSHIFT 259 #elif !defined(SUN4M) && defined(SUN4C) && defined(SUN4) 260 # define CPU_ISSUN4M (0) 261 # define CPU_ISSUN4C (cputyp == CPU_SUN4C) 262 # define CPU_ISSUN4 (cputyp == CPU_SUN4) 263 # define CPU_ISSUN4OR4C (1) 264 # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C) 265 # define NBPG nbpg 266 # define PGOFSET pgofset 267 # define PGSHIFT pgshift 268 #elif !defined(SUN4M) && defined(SUN4C) && !defined(SUN4) 269 # define CPU_ISSUN4M (0) 270 # define CPU_ISSUN4C (1) 271 # define CPU_ISSUN4 (0) 272 # define CPU_ISSUN4OR4C (1) 273 # define CPU_ISSUN4COR4M (1) 274 # define NBPG 4096 275 # define PGOFSET (NBPG-1) 276 # define PGSHIFT SUN4CM_PGSHIFT 277 #elif !defined(SUN4M) && !defined(SUN4C) && defined(SUN4) 278 # define CPU_ISSUN4M (0) 279 # define CPU_ISSUN4C (0) 280 # define CPU_ISSUN4 (1) 281 # define CPU_ISSUN4OR4C (1) 282 # define CPU_ISSUN4COR4M (0) 283 # define NBPG 8192 284 # define PGOFSET (NBPG-1) 285 # define PGSHIFT SUN4_PGSHIFT 286 #elif !defined(SUN4M) && !defined(SUN4C) && !defined(SUN4) 287 # define CPU_ISSUN4M (cputyp == CPU_SUN4M) 288 # define CPU_ISSUN4C (cputyp == CPU_SUN4C) 289 # define CPU_ISSUN4 (cputyp == CPU_SUN4) 290 # define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C) 291 # define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M) 292 # define NBPG nbpg 293 # define PGOFSET pgofset 294 # define PGSHIFT pgshift 295 #endif 296