specialreg.h revision 118954
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: head/sys/i386/include/specialreg.h 118954 2003-08-15 15:24:23Z jhb $ 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 0x00000001 81#define CPUID_VME 0x00000002 82#define CPUID_DE 0x00000004 83#define CPUID_PSE 0x00000008 84#define CPUID_TSC 0x00000010 85#define CPUID_MSR 0x00000020 86#define CPUID_PAE 0x00000040 87#define CPUID_MCE 0x00000080 88#define CPUID_CX8 0x00000100 89#define CPUID_APIC 0x00000200 90#define CPUID_B10 0x00000400 91#define CPUID_SEP 0x00000800 92#define CPUID_MTRR 0x00001000 93#define CPUID_PGE 0x00002000 94#define CPUID_MCA 0x00004000 95#define CPUID_CMOV 0x00008000 96#define CPUID_PAT 0x00010000 97#define CPUID_PSE36 0x00020000 98#define CPUID_PSN 0x00040000 99#define CPUID_CLFSH 0x00080000 100#define CPUID_B20 0x00100000 101#define CPUID_DS 0x00200000 102#define CPUID_ACPI 0x00400000 103#define CPUID_MMX 0x00800000 104#define CPUID_FXSR 0x01000000 105#define CPUID_SSE 0x02000000 106#define CPUID_XMM 0x02000000 107#define CPUID_SSE2 0x04000000 108#define CPUID_SS 0x08000000 109#define CPUID_HTT 0x10000000 110#define CPUID_TM 0x20000000 111#define CPUID_IA64 0x40000000 112#define CPUID_PBE 0x80000000 113 114/* 115 * CPUID instruction 1 ebx info 116 */ 117#define CPUID_BRAND_INDEX 0x000000ff 118#define CPUID_CLFUSH_SIZE 0x0000ff00 119#define CPUID_HTT_CORES 0x00ff0000 120#define CPUID_LOCAL_APIC_ID 0xff000000 121 122/* 123 * Model-specific registers for the i386 family 124 */ 125#define MSR_P5_MC_ADDR 0x000 126#define MSR_P5_MC_TYPE 0x001 127#define MSR_TSC 0x010 128#define MSR_P5_CESR 0x011 129#define MSR_P5_CTR0 0x012 130#define MSR_P5_CTR1 0x013 131#define MSR_IA32_PLATFORM_ID 0x017 132#define MSR_APICBASE 0x01b 133#define MSR_EBL_CR_POWERON 0x02a 134#define MSR_TEST_CTL 0x033 135#define MSR_BIOS_UPDT_TRIG 0x079 136#define MSR_BBL_CR_D0 0x088 137#define MSR_BBL_CR_D1 0x089 138#define MSR_BBL_CR_D2 0x08a 139#define MSR_BIOS_SIGN 0x08b 140#define MSR_PERFCTR0 0x0c1 141#define MSR_PERFCTR1 0x0c2 142#define MSR_MTRRcap 0x0fe 143#define MSR_BBL_CR_ADDR 0x116 144#define MSR_BBL_CR_DECC 0x118 145#define MSR_BBL_CR_CTL 0x119 146#define MSR_BBL_CR_TRIG 0x11a 147#define MSR_BBL_CR_BUSY 0x11b 148#define MSR_BBL_CR_CTL3 0x11e 149#define MSR_SYSENTER_CS_MSR 0x174 150#define MSR_SYSENTER_ESP_MSR 0x175 151#define MSR_SYSENTER_EIP_MSR 0x176 152#define MSR_MCG_CAP 0x179 153#define MSR_MCG_STATUS 0x17a 154#define MSR_MCG_CTL 0x17b 155#define MSR_EVNTSEL0 0x186 156#define MSR_EVNTSEL1 0x187 157#define MSR_DEBUGCTLMSR 0x1d9 158#define MSR_LASTBRANCHFROMIP 0x1db 159#define MSR_LASTBRANCHTOIP 0x1dc 160#define MSR_LASTINTFROMIP 0x1dd 161#define MSR_LASTINTTOIP 0x1de 162#define MSR_ROB_CR_BKUPTMPDR6 0x1e0 163#define MSR_MTRRVarBase 0x200 164#define MSR_MTRR64kBase 0x250 165#define MSR_MTRR16kBase 0x258 166#define MSR_MTRR4kBase 0x268 167#define MSR_MTRRdefType 0x2ff 168#define MSR_MC0_CTL 0x400 169#define MSR_MC0_STATUS 0x401 170#define MSR_MC0_ADDR 0x402 171#define MSR_MC0_MISC 0x403 172#define MSR_MC1_CTL 0x404 173#define MSR_MC1_STATUS 0x405 174#define MSR_MC1_ADDR 0x406 175#define MSR_MC1_MISC 0x407 176#define MSR_MC2_CTL 0x408 177#define MSR_MC2_STATUS 0x409 178#define MSR_MC2_ADDR 0x40a 179#define MSR_MC2_MISC 0x40b 180#define MSR_MC4_CTL 0x40c 181#define MSR_MC4_STATUS 0x40d 182#define MSR_MC4_ADDR 0x40e 183#define MSR_MC4_MISC 0x40f 184#define MSR_MC3_CTL 0x410 185#define MSR_MC3_STATUS 0x411 186#define MSR_MC3_ADDR 0x412 187#define MSR_MC3_MISC 0x413 188 189/* 190 * Constants related to MSR's. 191 */ 192#define APICBASE_RESERVED 0x000006ff 193#define APICBASE_BSP 0x00000100 194#define APICBASE_ENABLED 0x00000800 195#define APICBASE_ADDRESS 0xfffff000 196 197/* 198 * Constants related to MTRRs 199 */ 200#define MTRR_N64K 8 /* numbers of fixed-size entries */ 201#define MTRR_N16K 16 202#define MTRR_N4K 64 203 204/* 205 * Cyrix configuration registers, accessible as IO ports. 206 */ 207#define CCR0 0xc0 /* Configuration control register 0 */ 208#define CCR0_NC0 0x01 /* First 64K of each 1M memory region is 209 non-cacheable */ 210#define CCR0_NC1 0x02 /* 640K-1M region is non-cacheable */ 211#define CCR0_A20M 0x04 /* Enables A20M# input pin */ 212#define CCR0_KEN 0x08 /* Enables KEN# input pin */ 213#define CCR0_FLUSH 0x10 /* Enables FLUSH# input pin */ 214#define CCR0_BARB 0x20 /* Flushes internal cache when entering hold 215 state */ 216#define CCR0_CO 0x40 /* Cache org: 1=direct mapped, 0=2x set 217 assoc */ 218#define CCR0_SUSPEND 0x80 /* Enables SUSP# and SUSPA# pins */ 219 220#define CCR1 0xc1 /* Configuration control register 1 */ 221#define CCR1_RPL 0x01 /* Enables RPLSET and RPLVAL# pins */ 222#define CCR1_SMI 0x02 /* Enables SMM pins */ 223#define CCR1_SMAC 0x04 /* System management memory access */ 224#define CCR1_MMAC 0x08 /* Main memory access */ 225#define CCR1_NO_LOCK 0x10 /* Negate LOCK# */ 226#define CCR1_SM3 0x80 /* SMM address space address region 3 */ 227 228#define CCR2 0xc2 229#define CCR2_WB 0x02 /* Enables WB cache interface pins */ 230#define CCR2_SADS 0x02 /* Slow ADS */ 231#define CCR2_LOCK_NW 0x04 /* LOCK NW Bit */ 232#define CCR2_SUSP_HLT 0x08 /* Suspend on HALT */ 233#define CCR2_WT1 0x10 /* WT region 1 */ 234#define CCR2_WPR1 0x10 /* Write-protect region 1 */ 235#define CCR2_BARB 0x20 /* Flushes write-back cache when entering 236 hold state. */ 237#define CCR2_BWRT 0x40 /* Enables burst write cycles */ 238#define CCR2_USE_SUSP 0x80 /* Enables suspend pins */ 239 240#define CCR3 0xc3 241#define CCR3_SMILOCK 0x01 /* SMM register lock */ 242#define CCR3_NMI 0x02 /* Enables NMI during SMM */ 243#define CCR3_LINBRST 0x04 /* Linear address burst cycles */ 244#define CCR3_SMMMODE 0x08 /* SMM Mode */ 245#define CCR3_MAPEN0 0x10 /* Enables Map0 */ 246#define CCR3_MAPEN1 0x20 /* Enables Map1 */ 247#define CCR3_MAPEN2 0x40 /* Enables Map2 */ 248#define CCR3_MAPEN3 0x80 /* Enables Map3 */ 249 250#define CCR4 0xe8 251#define CCR4_IOMASK 0x07 252#define CCR4_MEM 0x08 /* Enables momory bypassing */ 253#define CCR4_DTE 0x10 /* Enables directory table entry cache */ 254#define CCR4_FASTFPE 0x20 /* Fast FPU exception */ 255#define CCR4_CPUID 0x80 /* Enables CPUID instruction */ 256 257#define CCR5 0xe9 258#define CCR5_WT_ALLOC 0x01 /* Write-through allocate */ 259#define CCR5_SLOP 0x02 /* LOOP instruction slowed down */ 260#define CCR5_LBR1 0x10 /* Local bus region 1 */ 261#define CCR5_ARREN 0x20 /* Enables ARR region */ 262 263#define CCR6 0xea 264 265#define CCR7 0xeb 266 267/* Performance Control Register (5x86 only). */ 268#define PCR0 0x20 269#define PCR0_RSTK 0x01 /* Enables return stack */ 270#define PCR0_BTB 0x02 /* Enables branch target buffer */ 271#define PCR0_LOOP 0x04 /* Enables loop */ 272#define PCR0_AIS 0x08 /* Enables all instrcutions stalled to 273 serialize pipe. */ 274#define PCR0_MLR 0x10 /* Enables reordering of misaligned loads */ 275#define PCR0_BTBRT 0x40 /* Enables BTB test register. */ 276#define PCR0_LSSER 0x80 /* Disable reorder */ 277 278/* Device Identification Registers */ 279#define DIR0 0xfe 280#define DIR1 0xff 281 282/* 283 * The following four 3-byte registers control the non-cacheable regions. 284 * These registers must be written as three separate bytes. 285 * 286 * NCRx+0: A31-A24 of starting address 287 * NCRx+1: A23-A16 of starting address 288 * NCRx+2: A15-A12 of starting address | NCR_SIZE_xx. 289 * 290 * The non-cacheable region's starting address must be aligned to the 291 * size indicated by the NCR_SIZE_xx field. 292 */ 293#define NCR1 0xc4 294#define NCR2 0xc7 295#define NCR3 0xca 296#define NCR4 0xcd 297 298#define NCR_SIZE_0K 0 299#define NCR_SIZE_4K 1 300#define NCR_SIZE_8K 2 301#define NCR_SIZE_16K 3 302#define NCR_SIZE_32K 4 303#define NCR_SIZE_64K 5 304#define NCR_SIZE_128K 6 305#define NCR_SIZE_256K 7 306#define NCR_SIZE_512K 8 307#define NCR_SIZE_1M 9 308#define NCR_SIZE_2M 10 309#define NCR_SIZE_4M 11 310#define NCR_SIZE_8M 12 311#define NCR_SIZE_16M 13 312#define NCR_SIZE_32M 14 313#define NCR_SIZE_4G 15 314 315/* 316 * The address region registers are used to specify the location and 317 * size for the eight address regions. 318 * 319 * ARRx + 0: A31-A24 of start address 320 * ARRx + 1: A23-A16 of start address 321 * ARRx + 2: A15-A12 of start address | ARR_SIZE_xx 322 */ 323#define ARR0 0xc4 324#define ARR1 0xc7 325#define ARR2 0xca 326#define ARR3 0xcd 327#define ARR4 0xd0 328#define ARR5 0xd3 329#define ARR6 0xd6 330#define ARR7 0xd9 331 332#define ARR_SIZE_0K 0 333#define ARR_SIZE_4K 1 334#define ARR_SIZE_8K 2 335#define ARR_SIZE_16K 3 336#define ARR_SIZE_32K 4 337#define ARR_SIZE_64K 5 338#define ARR_SIZE_128K 6 339#define ARR_SIZE_256K 7 340#define ARR_SIZE_512K 8 341#define ARR_SIZE_1M 9 342#define ARR_SIZE_2M 10 343#define ARR_SIZE_4M 11 344#define ARR_SIZE_8M 12 345#define ARR_SIZE_16M 13 346#define ARR_SIZE_32M 14 347#define ARR_SIZE_4G 15 348 349/* 350 * The region control registers specify the attributes associated with 351 * the ARRx addres regions. 352 */ 353#define RCR0 0xdc 354#define RCR1 0xdd 355#define RCR2 0xde 356#define RCR3 0xdf 357#define RCR4 0xe0 358#define RCR5 0xe1 359#define RCR6 0xe2 360#define RCR7 0xe3 361 362#define RCR_RCD 0x01 /* Disables caching for ARRx (x = 0-6). */ 363#define RCR_RCE 0x01 /* Enables caching for ARR7. */ 364#define RCR_WWO 0x02 /* Weak write ordering. */ 365#define RCR_WL 0x04 /* Weak locking. */ 366#define RCR_WG 0x08 /* Write gathering. */ 367#define RCR_WT 0x10 /* Write-through. */ 368#define RCR_NLB 0x20 /* LBA# pin is not asserted. */ 369 370/* AMD Write Allocate Top-Of-Memory and Control Register */ 371#define AMD_WT_ALLOC_TME 0x40000 /* top-of-memory enable */ 372#define AMD_WT_ALLOC_PRE 0x20000 /* programmable range enable */ 373#define AMD_WT_ALLOC_FRE 0x10000 /* fixed (A0000-FFFFF) range enable */ 374 375 376#ifndef LOCORE 377static __inline u_char 378read_cyrix_reg(u_char reg) 379{ 380 outb(0x22, reg); 381 return inb(0x23); 382} 383 384static __inline void 385write_cyrix_reg(u_char reg, u_char data) 386{ 387 outb(0x22, reg); 388 outb(0x23, data); 389} 390#endif 391 392#endif /* !_MACHINE_SPECIALREG_H_ */ 393