1 /*- 2 * Copyright (c) 1991 The Regents of the University of California. 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 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * from: @(#)specialreg.h 7.1 (Berkeley) 5/9/91 34 * $FreeBSD$ 35 */ 36 37 #ifndef _MACHINE_SPECIALREG_H_ 38 #define _MACHINE_SPECIALREG_H_ 39 40 /* 41 * Bits in 386 special registers: 42 */ 43 #define CR0_PE 0x00000001 /* Protected mode Enable */ 44 #define CR0_MP 0x00000002 /* "Math" Present (NPX or NPX emulator) */ 45 #define CR0_EM 0x00000004 /* EMulate non-NPX coproc. (trap ESC only) */ 46 #define CR0_TS 0x00000008 /* Task Switched (if MP, trap ESC and WAIT) */ 47 #ifdef notused 48 #define CR0_ET 0x00000010 /* Extension Type (387 (if set) vs 287) */ 49 #endif 50 #define CR0_PG 0x80000000 /* PaGing enable */ 51 52 /* 53 * Bits in 486 special registers: 54 */ 55 #define CR0_NE 0x00000020 /* Numeric Error enable (EX16 vs IRQ13) */ 56 #define CR0_WP 0x00010000 /* Write Protect (honor page protect in 57 all modes) */ 58 #define CR0_AM 0x00040000 /* Alignment Mask (set to enable AC flag) */ 59 #define CR0_NW 0x20000000 /* Not Write-through */ 60 #define CR0_CD 0x40000000 /* Cache Disable */ 61 62 /* 63 * Bits in PPro special registers 64 */ 65 #define CR4_VME 0x00000001 /* Virtual 8086 mode extensions */ 66 #define CR4_PVI 0x00000002 /* Protected-mode virtual interrupts */ 67 #define CR4_TSD 0x00000004 /* Time stamp disable */ 68 #define CR4_DE 0x00000008 /* Debugging extensions */ 69 #define CR4_PSE 0x00000010 /* Page size extensions */ 70 #define CR4_PAE 0x00000020 /* Physical address extension */ 71 #define CR4_MCE 0x00000040 /* Machine check enable */ 72 #define CR4_PGE 0x00000080 /* Page global enable */ 73 #define CR4_PCE 0x00000100 /* Performance monitoring counter enable */ 74 #define CR4_FXSR 0x00000200 /* Fast FPU save/restore used by OS */ 75 #define CR4_XMM 0x00000400 /* enable SIMD/MMX2 to use except 16 */ 76 77 /* 78 * CPUID instruction features register 79 */ 80 #define CPUID_FPU 0x0001 81 #define CPUID_VME 0x0002 82 #define CPUID_DE 0x0004 83 #define CPUID_PSE 0x0008 84 #define CPUID_TSC 0x0010 85 #define CPUID_MSR 0x0020 86 #define CPUID_PAE 0x0040 87 #define CPUID_MCE 0x0080 88 #define CPUID_CX8 0x0100 89 #define CPUID_APIC 0x0200 90 #define CPUID_B10 0x0400 91 #define CPUID_B11 0x0800 92 #define CPUID_MTRR 0x1000 93 #define CPUID_PGE 0x2000 94 #define CPUID_MCA 0x4000 95 #define CPUID_CMOV 0x8000 96 #define CPUID_FXSR 0x01000000 97 #define CPUID_XMM 0x02000000 98 99 /* 100 * Model-specific registers for the i386 family 101 */ 102 #define MSR_P5_MC_ADDR 0x000 103 #define MSR_P5_MC_TYPE 0x001 104 #define MSR_TSC 0x010 105 #define MSR_APICBASE 0x01b 106 #define MSR_EBL_CR_POWERON 0x02a 107 #define MSR_BIOS_UPDT_TRIG 0x079 108 #define MSR_BIOS_SIGN 0x08b 109 #define MSR_PERFCTR0 0x0c1 110 #define MSR_PERFCTR1 0x0c2 111 #define MSR_MTRRcap 0x0fe 112 #define MSR_MCG_CAP 0x179 113 #define MSR_MCG_STATUS 0x17a 114 #define MSR_MCG_CTL 0x17b 115 #define MSR_EVNTSEL0 0x186 116 #define MSR_EVNTSEL1 0x187 117 #define MSR_DEBUGCTLMSR 0x1d9 118 #define MSR_LASTBRANCHFROMIP 0x1db 119 #define MSR_LASTBRANCHTOIP 0x1dc 120 #define MSR_LASTINTFROMIP 0x1dd 121 #define MSR_LASTINTTOIP 0x1de 122 #define MSR_ROB_CR_BKUPTMPDR6 0x1e0 123 #define MSR_MTRRVarBase 0x200 124 #define MSR_MTRR64kBase 0x250 125 #define MSR_MTRR16kBase 0x258 126 #define MSR_MTRR4kBase 0x268 127 #define MSR_MTRRdefType 0x2ff 128 #define MSR_MC0_CTL 0x400 129 #define MSR_MC0_STATUS 0x401 130 #define MSR_MC0_ADDR 0x402 131 #define MSR_MC0_MISC 0x403 132 #define MSR_MC1_CTL 0x404 133 #define MSR_MC1_STATUS 0x405 134 #define MSR_MC1_ADDR 0x406 135 #define MSR_MC1_MISC 0x407 136 #define MSR_MC2_CTL 0x408 137 #define MSR_MC2_STATUS 0x409 138 #define MSR_MC2_ADDR 0x40a 139 #define MSR_MC2_MISC 0x40b 140 #define MSR_MC4_CTL 0x40c 141 #define MSR_MC4_STATUS 0x40d 142 #define MSR_MC4_ADDR 0x40e 143 #define MSR_MC4_MISC 0x40f 144 #define MSR_MC3_CTL 0x410 145 #define MSR_MC3_STATUS 0x411 146 #define MSR_MC3_ADDR 0x412 147 #define MSR_MC3_MISC 0x413 148 149 /* 150 * Constants related to MTRRs 151 */ 152 #define MTRR_N64K 8 /* numbers of fixed-size entries */ 153 #define MTRR_N16K 16 154 #define MTRR_N4K 64 155 156 /* 157 * Cyrix configuration registers, accessible as IO ports. 158 */ 159 #define CCR0 0xc0 /* Configuration control register 0 */ 160 #define CCR0_NC0 0x01 /* First 64K of each 1M memory region is 161 non-cacheable */ 162 #define CCR0_NC1 0x02 /* 640K-1M region is non-cacheable */ 163 #define CCR0_A20M 0x04 /* Enables A20M# input pin */ 164 #define CCR0_KEN 0x08 /* Enables KEN# input pin */ 165 #define CCR0_FLUSH 0x10 /* Enables FLUSH# input pin */ 166 #define CCR0_BARB 0x20 /* Flushes internal cache when entering hold 167 state */ 168 #define CCR0_CO 0x40 /* Cache org: 1=direct mapped, 0=2x set 169 assoc */ 170 #define CCR0_SUSPEND 0x80 /* Enables SUSP# and SUSPA# pins */ 171 172 #define CCR1 0xc1 /* Configuration control register 1 */ 173 #define CCR1_RPL 0x01 /* Enables RPLSET and RPLVAL# pins */ 174 #define CCR1_SMI 0x02 /* Enables SMM pins */ 175 #define CCR1_SMAC 0x04 /* System management memory access */ 176 #define CCR1_MMAC 0x08 /* Main memory access */ 177 #define CCR1_NO_LOCK 0x10 /* Negate LOCK# */ 178 #define CCR1_SM3 0x80 /* SMM address space address region 3 */ 179 180 #define CCR2 0xc2 181 #define CCR2_WB 0x02 /* Enables WB cache interface pins */ 182 #define CCR2_SADS 0x02 /* Slow ADS */ 183 #define CCR2_LOCK_NW 0x04 /* LOCK NW Bit */ 184 #define CCR2_SUSP_HLT 0x08 /* Suspend on HALT */ 185 #define CCR2_WT1 0x10 /* WT region 1 */ 186 #define CCR2_WPR1 0x10 /* Write-protect region 1 */ 187 #define CCR2_BARB 0x20 /* Flushes write-back cache when entering 188 hold state. */ 189 #define CCR2_BWRT 0x40 /* Enables burst write cycles */ 190 #define CCR2_USE_SUSP 0x80 /* Enables suspend pins */ 191 192 #define CCR3 0xc3 193 #define CCR3_SMILOCK 0x01 /* SMM register lock */ 194 #define CCR3_NMI 0x02 /* Enables NMI during SMM */ 195 #define CCR3_LINBRST 0x04 /* Linear address burst cycles */ 196 #define CCR3_SMMMODE 0x08 /* SMM Mode */ 197 #define CCR3_MAPEN0 0x10 /* Enables Map0 */ 198 #define CCR3_MAPEN1 0x20 /* Enables Map1 */ 199 #define CCR3_MAPEN2 0x40 /* Enables Map2 */ 200 #define CCR3_MAPEN3 0x80 /* Enables Map3 */ 201 202 #define CCR4 0xe8 203 #define CCR4_IOMASK 0x07 204 #define CCR4_MEM 0x08 /* Enables momory bypassing */ 205 #define CCR4_DTE 0x10 /* Enables directory table entry cache */ 206 #define CCR4_FASTFPE 0x20 /* Fast FPU exception */ 207 #define CCR4_CPUID 0x80 /* Enables CPUID instruction */ 208 209 #define CCR5 0xe9 210 #define CCR5_WT_ALLOC 0x01 /* Write-through allocate */ 211 #define CCR5_SLOP 0x02 /* LOOP instruction slowed down */ 212 #define CCR5_LBR1 0x10 /* Local bus region 1 */ 213 #define CCR5_ARREN 0x20 /* Enables ARR region */ 214 215 #define CCR6 0xea 216 217 #define CCR7 0xeb 218 219 /* Performance Control Register (5x86 only). */ 220 #define PCR0 0x20 221 #define PCR0_RSTK 0x01 /* Enables return stack */ 222 #define PCR0_BTB 0x02 /* Enables branch target buffer */ 223 #define PCR0_LOOP 0x04 /* Enables loop */ 224 #define PCR0_AIS 0x08 /* Enables all instrcutions stalled to 225 serialize pipe. */ 226 #define PCR0_MLR 0x10 /* Enables reordering of misaligned loads */ 227 #define PCR0_BTBRT 0x40 /* Enables BTB test register. */ 228 #define PCR0_LSSER 0x80 /* Disable reorder */ 229 230 /* Device Identification Registers */ 231 #define DIR0 0xfe 232 #define DIR1 0xff 233 234 /* 235 * The following four 3-byte registers control the non-cacheable regions. 236 * These registers must be written as three separate bytes. 237 * 238 * NCRx+0: A31-A24 of starting address 239 * NCRx+1: A23-A16 of starting address 240 * NCRx+2: A15-A12 of starting address | NCR_SIZE_xx. 241 * 242 * The non-cacheable region's starting address must be aligned to the 243 * size indicated by the NCR_SIZE_xx field. 244 */ 245 #define NCR1 0xc4 246 #define NCR2 0xc7 247 #define NCR3 0xca 248 #define NCR4 0xcd 249 250 #define NCR_SIZE_0K 0 251 #define NCR_SIZE_4K 1 252 #define NCR_SIZE_8K 2 253 #define NCR_SIZE_16K 3 254 #define NCR_SIZE_32K 4 255 #define NCR_SIZE_64K 5 256 #define NCR_SIZE_128K 6 257 #define NCR_SIZE_256K 7 258 #define NCR_SIZE_512K 8 259 #define NCR_SIZE_1M 9 260 #define NCR_SIZE_2M 10 261 #define NCR_SIZE_4M 11 262 #define NCR_SIZE_8M 12 263 #define NCR_SIZE_16M 13 264 #define NCR_SIZE_32M 14 265 #define NCR_SIZE_4G 15 266 267 /* 268 * The address region registers are used to specify the location and 269 * size for the eight address regions. 270 * 271 * ARRx + 0: A31-A24 of start address 272 * ARRx + 1: A23-A16 of start address 273 * ARRx + 2: A15-A12 of start address | ARR_SIZE_xx 274 */ 275 #define ARR0 0xc4 276 #define ARR1 0xc7 277 #define ARR2 0xca 278 #define ARR3 0xcd 279 #define ARR4 0xd0 280 #define ARR5 0xd3 281 #define ARR6 0xd6 282 #define ARR7 0xd9 283 284 #define ARR_SIZE_0K 0 285 #define ARR_SIZE_4K 1 286 #define ARR_SIZE_8K 2 287 #define ARR_SIZE_16K 3 288 #define ARR_SIZE_32K 4 289 #define ARR_SIZE_64K 5 290 #define ARR_SIZE_128K 6 291 #define ARR_SIZE_256K 7 292 #define ARR_SIZE_512K 8 293 #define ARR_SIZE_1M 9 294 #define ARR_SIZE_2M 10 295 #define ARR_SIZE_4M 11 296 #define ARR_SIZE_8M 12 297 #define ARR_SIZE_16M 13 298 #define ARR_SIZE_32M 14 299 #define ARR_SIZE_4G 15 300 301 /* 302 * The region control registers specify the attributes associated with 303 * the ARRx addres regions. 304 */ 305 #define RCR0 0xdc 306 #define RCR1 0xdd 307 #define RCR2 0xde 308 #define RCR3 0xdf 309 #define RCR4 0xe0 310 #define RCR5 0xe1 311 #define RCR6 0xe2 312 #define RCR7 0xe3 313 314 #define RCR_RCD 0x01 /* Disables caching for ARRx (x = 0-6). */ 315 #define RCR_RCE 0x01 /* Enables caching for ARR7. */ 316 #define RCR_WWO 0x02 /* Weak write ordering. */ 317 #define RCR_WL 0x04 /* Weak locking. */ 318 #define RCR_WG 0x08 /* Write gathering. */ 319 #define RCR_WT 0x10 /* Write-through. */ 320 #define RCR_NLB 0x20 /* LBA# pin is not asserted. */ 321 322 /* AMD Write Allocate Top-Of-Memory and Control Register */ 323 #define AMD_WT_ALLOC_TME 0x40000 /* top-of-memory enable */ 324 #define AMD_WT_ALLOC_PRE 0x20000 /* programmable range enable */ 325 #define AMD_WT_ALLOC_FRE 0x10000 /* fixed (A0000-FFFFF) range enable */ 326 327 328 #ifndef LOCORE 329 static __inline u_char 330 read_cyrix_reg(u_char reg) 331 { 332 outb(0x22, reg); 333 return inb(0x23); 334 } 335 336 static __inline void 337 write_cyrix_reg(u_char reg, u_char data) 338 { 339 outb(0x22, reg); 340 outb(0x23, data); 341 } 342 #endif 343 344 #endif /* !_MACHINE_SPECIALREG_H_ */ 345