1 /*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (C) 1995, 1996 Wolfgang Solfrank. 5 * Copyright (C) 1995, 1996 TooLs GmbH. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by TooLs GmbH. 19 * 4. The name of TooLs GmbH may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 27 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 28 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 29 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 30 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 31 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $NetBSD: vmparam.h,v 1.11 2000/02/11 19:25:16 thorpej Exp $ 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_VMPARAM_H_ 38 #define _MACHINE_VMPARAM_H_ 39 40 #ifndef LOCORE 41 #include <machine/md_var.h> 42 #endif 43 44 #define USRSTACK SHAREDPAGE 45 46 #ifndef MAXTSIZ 47 #define MAXTSIZ (1*1024*1024*1024) /* max text size */ 48 #endif 49 50 #ifndef DFLDSIZ 51 #define DFLDSIZ (128*1024*1024) /* default data size */ 52 #endif 53 54 #ifndef MAXDSIZ 55 #ifdef __powerpc64__ 56 #define MAXDSIZ (32UL*1024*1024*1024) /* max data size */ 57 #else 58 #define MAXDSIZ (1*1024*1024*1024) /* max data size */ 59 #endif 60 #endif 61 62 #ifndef DFLSSIZ 63 #define DFLSSIZ (8*1024*1024) /* default stack size */ 64 #endif 65 66 #ifndef MAXSSIZ 67 #ifdef __powerpc64__ 68 #define MAXSSIZ (512*1024*1024) /* max stack size */ 69 #else 70 #define MAXSSIZ (64*1024*1024) /* max stack size */ 71 #endif 72 #endif 73 74 #ifdef AIM 75 #define VM_MAXUSER_ADDRESS32 0xfffff000 76 #else 77 #define VM_MAXUSER_ADDRESS32 0x7ffff000 78 #endif 79 80 /* 81 * Would like to have MAX addresses = 0, but this doesn't (currently) work 82 */ 83 #ifdef __powerpc64__ 84 /* 85 * Virtual addresses of things. Derived from the page directory and 86 * page table indexes from pmap.h for precision. 87 * 88 * kernel map should be able to start at 0xc008000000000000 - 89 * but at least the functional simulator doesn't like it 90 * 91 * 0x0000000000000000 - 0x000fffffffffffff user map 92 * 0xc000000000000000 - 0xc007ffffffffffff direct map 93 * 0xc008000000000000 - 0xc00fffffffffffff kernel map 94 * 95 */ 96 #define VM_MIN_ADDRESS 0x0000000000000000 97 #define VM_MAXUSER_ADDRESS 0x000fffffc0000000 98 #define VM_MAX_ADDRESS 0xc00fffffffffffff 99 #define VM_MIN_KERNEL_ADDRESS 0xc008000000000000 100 #define VM_MAX_KERNEL_ADDRESS 0xc0080007ffffffff 101 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 102 #else 103 #define VM_MIN_ADDRESS 0 104 #define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32 105 #define VM_MAX_ADDRESS 0xffffffff 106 #endif 107 108 #define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE) 109 110 #define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE) 111 #define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE 112 113 #define KERNBASE 0x00100100 /* start of kernel virtual */ 114 115 #ifdef AIM 116 #ifndef __powerpc64__ 117 #define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)KERNEL_SR << ADDR_SR_SHFT) 118 #define VM_MAX_SAFE_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 2*SEGMENT_LENGTH -1) 119 #define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + 3*SEGMENT_LENGTH - 1) 120 #endif 121 122 /* 123 * Use the direct-mapped BAT registers for UMA small allocs. This 124 * takes pressure off the small amount of available KVA. 125 */ 126 #define UMA_MD_SMALL_ALLOC 127 128 #else /* Book-E */ 129 130 /* Use the direct map for UMA small allocs on powerpc64. */ 131 #ifdef __powerpc64__ 132 #define UMA_MD_SMALL_ALLOC 133 #else 134 #define VM_MIN_KERNEL_ADDRESS 0xc0000000 135 #define VM_MAX_KERNEL_ADDRESS 0xffffefff 136 #define VM_MAX_SAFE_KERNEL_ADDRESS VM_MAX_KERNEL_ADDRESS 137 #endif 138 139 #endif /* AIM/E500 */ 140 141 #if !defined(LOCORE) 142 struct pmap_physseg { 143 struct pv_entry *pvent; 144 char *attrs; 145 }; 146 #endif 147 148 #ifdef __powerpc64__ 149 #define VM_PHYSSEG_MAX 63 /* 1? */ 150 #else 151 #define VM_PHYSSEG_MAX 16 /* 1? */ 152 #endif 153 154 #define PHYS_AVAIL_SZ 256 /* Allows up to 16GB Ram on pSeries with 155 * logical memory block size of 64MB. 156 * For more Ram increase the lmb or this value. 157 */ 158 159 /* XXX This is non-sensical. Phys avail should hold contiguous regions. */ 160 #define PHYS_AVAIL_ENTRIES PHYS_AVAIL_SZ 161 162 /* 163 * The physical address space is densely populated on 32-bit systems, 164 * but may not be on 64-bit ones. 165 */ 166 #ifdef __powerpc64__ 167 #define VM_PHYSSEG_SPARSE 168 #else 169 #define VM_PHYSSEG_DENSE 170 #endif 171 172 /* 173 * Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool 174 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 175 * the pool from which physical pages for small UMA objects are 176 * allocated. 177 */ 178 #define VM_NFREEPOOL 2 179 #define VM_FREEPOOL_DEFAULT 0 180 #define VM_FREEPOOL_DIRECT 1 181 182 /* 183 * Create one free page list. 184 */ 185 #define VM_NFREELIST 1 186 #define VM_FREELIST_DEFAULT 0 187 188 #ifdef __powerpc64__ 189 /* The largest allocation size is 16MB. */ 190 #define VM_NFREEORDER 13 191 #else 192 /* The largest allocation size is 4MB. */ 193 #define VM_NFREEORDER 11 194 #endif 195 196 #ifndef VM_NRESERVLEVEL 197 #ifdef __powerpc64__ 198 /* Enable superpage reservations: 1 level. */ 199 #define VM_NRESERVLEVEL 1 200 #else 201 /* Disable superpage reservations. */ 202 #define VM_NRESERVLEVEL 0 203 #endif 204 #endif 205 206 #ifndef VM_LEVEL_0_ORDER 207 /* Level 0 reservations consist of 512 (RPT) or 4096 (HPT) pages. */ 208 #define VM_LEVEL_0_ORDER vm_level_0_order 209 #ifndef __ASSEMBLER__ 210 extern int vm_level_0_order; 211 #endif 212 #endif 213 214 #ifndef VM_LEVEL_0_ORDER_MAX 215 #define VM_LEVEL_0_ORDER_MAX 12 216 #endif 217 218 #ifdef __powerpc64__ 219 #ifdef SMP 220 #define PA_LOCK_COUNT 256 221 #endif 222 #endif 223 224 #ifndef VM_INITIAL_PAGEIN 225 #define VM_INITIAL_PAGEIN 16 226 #endif 227 228 #ifndef SGROWSIZ 229 #define SGROWSIZ (128UL*1024) /* amount to grow stack */ 230 #endif 231 232 /* 233 * How many physical pages per kmem arena virtual page. 234 */ 235 #ifndef VM_KMEM_SIZE_SCALE 236 #define VM_KMEM_SIZE_SCALE (3) 237 #endif 238 239 /* 240 * Optional floor (in bytes) on the size of the kmem arena. 241 */ 242 #ifndef VM_KMEM_SIZE_MIN 243 #define VM_KMEM_SIZE_MIN (12 * 1024 * 1024) 244 #endif 245 246 /* 247 * Optional ceiling (in bytes) on the size of the kmem arena: 40% of the 248 * usable KVA space. 249 */ 250 #ifndef VM_KMEM_SIZE_MAX 251 #define VM_KMEM_SIZE_MAX ((VM_MAX_SAFE_KERNEL_ADDRESS - \ 252 VM_MIN_KERNEL_ADDRESS + 1) * 2 / 5) 253 #endif 254 255 #ifdef __powerpc64__ 256 #define ZERO_REGION_SIZE (2 * 1024 * 1024) /* 2MB */ 257 #else 258 #define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 259 #endif 260 261 /* 262 * On 32-bit OEA, the only purpose for which sf_buf is used is to implement 263 * an opaque pointer required by the machine-independent parts of the kernel. 264 * That pointer references the vm_page that is "mapped" by the sf_buf. The 265 * actual mapping is provided by the direct virtual-to-physical mapping. 266 * 267 * On OEA64 and Book-E, we need to do something a little more complicated. Use 268 * the runtime-detected hw_direct_map to pick between the two cases. Our 269 * friends in vm_machdep.c will do the same to ensure nothing gets confused. 270 */ 271 #define SFBUF 272 #define SFBUF_NOMD 273 274 /* 275 * We (usually) have a direct map of all physical memory, so provide 276 * a macro to use to get the kernel VA address for a given PA. Check the 277 * value of PMAP_HAS_PMAP before using. 278 */ 279 #ifndef LOCORE 280 #ifdef __powerpc64__ 281 #define DMAP_BASE_ADDRESS 0xc000000000000000UL 282 #define DMAP_MIN_ADDRESS DMAP_BASE_ADDRESS 283 #define DMAP_MAX_ADDRESS 0xc007ffffffffffffUL 284 #else 285 #define DMAP_BASE_ADDRESS 0x00000000UL 286 #define DMAP_MAX_ADDRESS 0xbfffffffUL 287 #endif 288 #endif 289 290 #if defined(__powerpc64__) || defined(BOOKE) 291 /* 292 * powerpc64 and Book-E will provide their own page array allocators. 293 * 294 * On AIM, this will allocate a single virtual array, with pages from the 295 * correct memory domains. 296 * On Book-E this will let us put the array in TLB1, removing the need for TLB 297 * thrashing. 298 * 299 * VM_MIN_KERNEL_ADDRESS is just a dummy. It will get set by the MMU driver. 300 */ 301 #define PA_MIN_ADDRESS VM_MIN_KERNEL_ADDRESS 302 #define PMAP_HAS_PAGE_ARRAY 1 303 #endif 304 305 #if defined(__powerpc64__) 306 /* 307 * Need a page dump array for minidump. 308 */ 309 #define MINIDUMP_PAGE_TRACKING 1 310 #else 311 /* 312 * No minidump with 32-bit powerpc. 313 */ 314 #define MINIDUMP_PAGE_TRACKING 0 315 #endif 316 317 #define PMAP_HAS_DMAP (hw_direct_map) 318 #define PHYS_TO_DMAP(x) ({ \ 319 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 320 (x) | DMAP_BASE_ADDRESS; }) 321 #define DMAP_TO_PHYS(x) ({ \ 322 KASSERT(hw_direct_map, ("Direct map not provided by PMAP")); \ 323 (x) &~ DMAP_BASE_ADDRESS; }) 324 325 /* 326 * No non-transparent large page support in the pmap. 327 */ 328 #define PMAP_HAS_LARGEPAGES 0 329 330 #endif /* _MACHINE_VMPARAM_H_ */ 331