specialreg.h revision 98650
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 98650 2002-06-22 23:00:33Z mp $ 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_HHT 0x10000000 110#define CPUID_TM 0x20000000 111#define CPUID_B30 0x40000000 112#define CPUID_PBE 0x80000000 113 114/* 115 * Model-specific registers for the i386 family 116 */ 117#define MSR_P5_MC_ADDR 0x000 118#define MSR_P5_MC_TYPE 0x001 119#define MSR_TSC 0x010 120#define MSR_APICBASE 0x01b 121#define MSR_EBL_CR_POWERON 0x02a 122#define MSR_BIOS_UPDT_TRIG 0x079 123#define MSR_BIOS_SIGN 0x08b 124#define MSR_PERFCTR0 0x0c1 125#define MSR_PERFCTR1 0x0c2 126#define MSR_MTRRcap 0x0fe 127#define MSR_MCG_CAP 0x179 128#define MSR_MCG_STATUS 0x17a 129#define MSR_MCG_CTL 0x17b 130#define MSR_EVNTSEL0 0x186 131#define MSR_EVNTSEL1 0x187 132#define MSR_DEBUGCTLMSR 0x1d9 133#define MSR_LASTBRANCHFROMIP 0x1db 134#define MSR_LASTBRANCHTOIP 0x1dc 135#define MSR_LASTINTFROMIP 0x1dd 136#define MSR_LASTINTTOIP 0x1de 137#define MSR_ROB_CR_BKUPTMPDR6 0x1e0 138#define MSR_MTRRVarBase 0x200 139#define MSR_MTRR64kBase 0x250 140#define MSR_MTRR16kBase 0x258 141#define MSR_MTRR4kBase 0x268 142#define MSR_MTRRdefType 0x2ff 143#define MSR_MC0_CTL 0x400 144#define MSR_MC0_STATUS 0x401 145#define MSR_MC0_ADDR 0x402 146#define MSR_MC0_MISC 0x403 147#define MSR_MC1_CTL 0x404 148#define MSR_MC1_STATUS 0x405 149#define MSR_MC1_ADDR 0x406 150#define MSR_MC1_MISC 0x407 151#define MSR_MC2_CTL 0x408 152#define MSR_MC2_STATUS 0x409 153#define MSR_MC2_ADDR 0x40a 154#define MSR_MC2_MISC 0x40b 155#define MSR_MC4_CTL 0x40c 156#define MSR_MC4_STATUS 0x40d 157#define MSR_MC4_ADDR 0x40e 158#define MSR_MC4_MISC 0x40f 159#define MSR_MC3_CTL 0x410 160#define MSR_MC3_STATUS 0x411 161#define MSR_MC3_ADDR 0x412 162#define MSR_MC3_MISC 0x413 163 164/* 165 * Constants related to MTRRs 166 */ 167#define MTRR_N64K 8 /* numbers of fixed-size entries */ 168#define MTRR_N16K 16 169#define MTRR_N4K 64 170 171/* 172 * Cyrix configuration registers, accessible as IO ports. 173 */ 174#define CCR0 0xc0 /* Configuration control register 0 */ 175#define CCR0_NC0 0x01 /* First 64K of each 1M memory region is 176 non-cacheable */ 177#define CCR0_NC1 0x02 /* 640K-1M region is non-cacheable */ 178#define CCR0_A20M 0x04 /* Enables A20M# input pin */ 179#define CCR0_KEN 0x08 /* Enables KEN# input pin */ 180#define CCR0_FLUSH 0x10 /* Enables FLUSH# input pin */ 181#define CCR0_BARB 0x20 /* Flushes internal cache when entering hold 182 state */ 183#define CCR0_CO 0x40 /* Cache org: 1=direct mapped, 0=2x set 184 assoc */ 185#define CCR0_SUSPEND 0x80 /* Enables SUSP# and SUSPA# pins */ 186 187#define CCR1 0xc1 /* Configuration control register 1 */ 188#define CCR1_RPL 0x01 /* Enables RPLSET and RPLVAL# pins */ 189#define CCR1_SMI 0x02 /* Enables SMM pins */ 190#define CCR1_SMAC 0x04 /* System management memory access */ 191#define CCR1_MMAC 0x08 /* Main memory access */ 192#define CCR1_NO_LOCK 0x10 /* Negate LOCK# */ 193#define CCR1_SM3 0x80 /* SMM address space address region 3 */ 194 195#define CCR2 0xc2 196#define CCR2_WB 0x02 /* Enables WB cache interface pins */ 197#define CCR2_SADS 0x02 /* Slow ADS */ 198#define CCR2_LOCK_NW 0x04 /* LOCK NW Bit */ 199#define CCR2_SUSP_HLT 0x08 /* Suspend on HALT */ 200#define CCR2_WT1 0x10 /* WT region 1 */ 201#define CCR2_WPR1 0x10 /* Write-protect region 1 */ 202#define CCR2_BARB 0x20 /* Flushes write-back cache when entering 203 hold state. */ 204#define CCR2_BWRT 0x40 /* Enables burst write cycles */ 205#define CCR2_USE_SUSP 0x80 /* Enables suspend pins */ 206 207#define CCR3 0xc3 208#define CCR3_SMILOCK 0x01 /* SMM register lock */ 209#define CCR3_NMI 0x02 /* Enables NMI during SMM */ 210#define CCR3_LINBRST 0x04 /* Linear address burst cycles */ 211#define CCR3_SMMMODE 0x08 /* SMM Mode */ 212#define CCR3_MAPEN0 0x10 /* Enables Map0 */ 213#define CCR3_MAPEN1 0x20 /* Enables Map1 */ 214#define CCR3_MAPEN2 0x40 /* Enables Map2 */ 215#define CCR3_MAPEN3 0x80 /* Enables Map3 */ 216 217#define CCR4 0xe8 218#define CCR4_IOMASK 0x07 219#define CCR4_MEM 0x08 /* Enables momory bypassing */ 220#define CCR4_DTE 0x10 /* Enables directory table entry cache */ 221#define CCR4_FASTFPE 0x20 /* Fast FPU exception */ 222#define CCR4_CPUID 0x80 /* Enables CPUID instruction */ 223 224#define CCR5 0xe9 225#define CCR5_WT_ALLOC 0x01 /* Write-through allocate */ 226#define CCR5_SLOP 0x02 /* LOOP instruction slowed down */ 227#define CCR5_LBR1 0x10 /* Local bus region 1 */ 228#define CCR5_ARREN 0x20 /* Enables ARR region */ 229 230#define CCR6 0xea 231 232#define CCR7 0xeb 233 234/* Performance Control Register (5x86 only). */ 235#define PCR0 0x20 236#define PCR0_RSTK 0x01 /* Enables return stack */ 237#define PCR0_BTB 0x02 /* Enables branch target buffer */ 238#define PCR0_LOOP 0x04 /* Enables loop */ 239#define PCR0_AIS 0x08 /* Enables all instrcutions stalled to 240 serialize pipe. */ 241#define PCR0_MLR 0x10 /* Enables reordering of misaligned loads */ 242#define PCR0_BTBRT 0x40 /* Enables BTB test register. */ 243#define PCR0_LSSER 0x80 /* Disable reorder */ 244 245/* Device Identification Registers */ 246#define DIR0 0xfe 247#define DIR1 0xff 248 249/* 250 * The following four 3-byte registers control the non-cacheable regions. 251 * These registers must be written as three separate bytes. 252 * 253 * NCRx+0: A31-A24 of starting address 254 * NCRx+1: A23-A16 of starting address 255 * NCRx+2: A15-A12 of starting address | NCR_SIZE_xx. 256 * 257 * The non-cacheable region's starting address must be aligned to the 258 * size indicated by the NCR_SIZE_xx field. 259 */ 260#define NCR1 0xc4 261#define NCR2 0xc7 262#define NCR3 0xca 263#define NCR4 0xcd 264 265#define NCR_SIZE_0K 0 266#define NCR_SIZE_4K 1 267#define NCR_SIZE_8K 2 268#define NCR_SIZE_16K 3 269#define NCR_SIZE_32K 4 270#define NCR_SIZE_64K 5 271#define NCR_SIZE_128K 6 272#define NCR_SIZE_256K 7 273#define NCR_SIZE_512K 8 274#define NCR_SIZE_1M 9 275#define NCR_SIZE_2M 10 276#define NCR_SIZE_4M 11 277#define NCR_SIZE_8M 12 278#define NCR_SIZE_16M 13 279#define NCR_SIZE_32M 14 280#define NCR_SIZE_4G 15 281 282/* 283 * The address region registers are used to specify the location and 284 * size for the eight address regions. 285 * 286 * ARRx + 0: A31-A24 of start address 287 * ARRx + 1: A23-A16 of start address 288 * ARRx + 2: A15-A12 of start address | ARR_SIZE_xx 289 */ 290#define ARR0 0xc4 291#define ARR1 0xc7 292#define ARR2 0xca 293#define ARR3 0xcd 294#define ARR4 0xd0 295#define ARR5 0xd3 296#define ARR6 0xd6 297#define ARR7 0xd9 298 299#define ARR_SIZE_0K 0 300#define ARR_SIZE_4K 1 301#define ARR_SIZE_8K 2 302#define ARR_SIZE_16K 3 303#define ARR_SIZE_32K 4 304#define ARR_SIZE_64K 5 305#define ARR_SIZE_128K 6 306#define ARR_SIZE_256K 7 307#define ARR_SIZE_512K 8 308#define ARR_SIZE_1M 9 309#define ARR_SIZE_2M 10 310#define ARR_SIZE_4M 11 311#define ARR_SIZE_8M 12 312#define ARR_SIZE_16M 13 313#define ARR_SIZE_32M 14 314#define ARR_SIZE_4G 15 315 316/* 317 * The region control registers specify the attributes associated with 318 * the ARRx addres regions. 319 */ 320#define RCR0 0xdc 321#define RCR1 0xdd 322#define RCR2 0xde 323#define RCR3 0xdf 324#define RCR4 0xe0 325#define RCR5 0xe1 326#define RCR6 0xe2 327#define RCR7 0xe3 328 329#define RCR_RCD 0x01 /* Disables caching for ARRx (x = 0-6). */ 330#define RCR_RCE 0x01 /* Enables caching for ARR7. */ 331#define RCR_WWO 0x02 /* Weak write ordering. */ 332#define RCR_WL 0x04 /* Weak locking. */ 333#define RCR_WG 0x08 /* Write gathering. */ 334#define RCR_WT 0x10 /* Write-through. */ 335#define RCR_NLB 0x20 /* LBA# pin is not asserted. */ 336 337/* AMD Write Allocate Top-Of-Memory and Control Register */ 338#define AMD_WT_ALLOC_TME 0x40000 /* top-of-memory enable */ 339#define AMD_WT_ALLOC_PRE 0x20000 /* programmable range enable */ 340#define AMD_WT_ALLOC_FRE 0x10000 /* fixed (A0000-FFFFF) range enable */ 341 342 343#ifndef LOCORE 344static __inline u_char 345read_cyrix_reg(u_char reg) 346{ 347 outb(0x22, reg); 348 return inb(0x23); 349} 350 351static __inline void 352write_cyrix_reg(u_char reg, u_char data) 353{ 354 outb(0x22, reg); 355 outb(0x23, data); 356} 357#endif 358 359#endif /* !_MACHINE_SPECIALREG_H_ */ 360