freebsd-dev/sys/i386/include/specialreg.h
2002-06-22 23:00:33 +00:00

360 lines
12 KiB
C

/*-
* Copyright (c) 1991 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)specialreg.h 7.1 (Berkeley) 5/9/91
* $FreeBSD$
*/
#ifndef _MACHINE_SPECIALREG_H_
#define _MACHINE_SPECIALREG_H_
/*
* Bits in 386 special registers:
*/
#define CR0_PE 0x00000001 /* Protected mode Enable */
#define CR0_MP 0x00000002 /* "Math" Present (NPX or NPX emulator) */
#define CR0_EM 0x00000004 /* EMulate non-NPX coproc. (trap ESC only) */
#define CR0_TS 0x00000008 /* Task Switched (if MP, trap ESC and WAIT) */
#ifdef notused
#define CR0_ET 0x00000010 /* Extension Type (387 (if set) vs 287) */
#endif
#define CR0_PG 0x80000000 /* PaGing enable */
/*
* Bits in 486 special registers:
*/
#define CR0_NE 0x00000020 /* Numeric Error enable (EX16 vs IRQ13) */
#define CR0_WP 0x00010000 /* Write Protect (honor page protect in
all modes) */
#define CR0_AM 0x00040000 /* Alignment Mask (set to enable AC flag) */
#define CR0_NW 0x20000000 /* Not Write-through */
#define CR0_CD 0x40000000 /* Cache Disable */
/*
* Bits in PPro special registers
*/
#define CR4_VME 0x00000001 /* Virtual 8086 mode extensions */
#define CR4_PVI 0x00000002 /* Protected-mode virtual interrupts */
#define CR4_TSD 0x00000004 /* Time stamp disable */
#define CR4_DE 0x00000008 /* Debugging extensions */
#define CR4_PSE 0x00000010 /* Page size extensions */
#define CR4_PAE 0x00000020 /* Physical address extension */
#define CR4_MCE 0x00000040 /* Machine check enable */
#define CR4_PGE 0x00000080 /* Page global enable */
#define CR4_PCE 0x00000100 /* Performance monitoring counter enable */
#define CR4_FXSR 0x00000200 /* Fast FPU save/restore used by OS */
#define CR4_XMM 0x00000400 /* enable SIMD/MMX2 to use except 16 */
/*
* CPUID instruction features register
*/
#define CPUID_FPU 0x00000001
#define CPUID_VME 0x00000002
#define CPUID_DE 0x00000004
#define CPUID_PSE 0x00000008
#define CPUID_TSC 0x00000010
#define CPUID_MSR 0x00000020
#define CPUID_PAE 0x00000040
#define CPUID_MCE 0x00000080
#define CPUID_CX8 0x00000100
#define CPUID_APIC 0x00000200
#define CPUID_B10 0x00000400
#define CPUID_SEP 0x00000800
#define CPUID_MTRR 0x00001000
#define CPUID_PGE 0x00002000
#define CPUID_MCA 0x00004000
#define CPUID_CMOV 0x00008000
#define CPUID_PAT 0x00010000
#define CPUID_PSE36 0x00020000
#define CPUID_PSN 0x00040000
#define CPUID_CLFSH 0x00080000
#define CPUID_B20 0x00100000
#define CPUID_DS 0x00200000
#define CPUID_ACPI 0x00400000
#define CPUID_MMX 0x00800000
#define CPUID_FXSR 0x01000000
#define CPUID_SSE 0x02000000
#define CPUID_XMM 0x02000000
#define CPUID_SSE2 0x04000000
#define CPUID_SS 0x08000000
#define CPUID_HHT 0x10000000
#define CPUID_TM 0x20000000
#define CPUID_B30 0x40000000
#define CPUID_PBE 0x80000000
/*
* Model-specific registers for the i386 family
*/
#define MSR_P5_MC_ADDR 0x000
#define MSR_P5_MC_TYPE 0x001
#define MSR_TSC 0x010
#define MSR_APICBASE 0x01b
#define MSR_EBL_CR_POWERON 0x02a
#define MSR_BIOS_UPDT_TRIG 0x079
#define MSR_BIOS_SIGN 0x08b
#define MSR_PERFCTR0 0x0c1
#define MSR_PERFCTR1 0x0c2
#define MSR_MTRRcap 0x0fe
#define MSR_MCG_CAP 0x179
#define MSR_MCG_STATUS 0x17a
#define MSR_MCG_CTL 0x17b
#define MSR_EVNTSEL0 0x186
#define MSR_EVNTSEL1 0x187
#define MSR_DEBUGCTLMSR 0x1d9
#define MSR_LASTBRANCHFROMIP 0x1db
#define MSR_LASTBRANCHTOIP 0x1dc
#define MSR_LASTINTFROMIP 0x1dd
#define MSR_LASTINTTOIP 0x1de
#define MSR_ROB_CR_BKUPTMPDR6 0x1e0
#define MSR_MTRRVarBase 0x200
#define MSR_MTRR64kBase 0x250
#define MSR_MTRR16kBase 0x258
#define MSR_MTRR4kBase 0x268
#define MSR_MTRRdefType 0x2ff
#define MSR_MC0_CTL 0x400
#define MSR_MC0_STATUS 0x401
#define MSR_MC0_ADDR 0x402
#define MSR_MC0_MISC 0x403
#define MSR_MC1_CTL 0x404
#define MSR_MC1_STATUS 0x405
#define MSR_MC1_ADDR 0x406
#define MSR_MC1_MISC 0x407
#define MSR_MC2_CTL 0x408
#define MSR_MC2_STATUS 0x409
#define MSR_MC2_ADDR 0x40a
#define MSR_MC2_MISC 0x40b
#define MSR_MC4_CTL 0x40c
#define MSR_MC4_STATUS 0x40d
#define MSR_MC4_ADDR 0x40e
#define MSR_MC4_MISC 0x40f
#define MSR_MC3_CTL 0x410
#define MSR_MC3_STATUS 0x411
#define MSR_MC3_ADDR 0x412
#define MSR_MC3_MISC 0x413
/*
* Constants related to MTRRs
*/
#define MTRR_N64K 8 /* numbers of fixed-size entries */
#define MTRR_N16K 16
#define MTRR_N4K 64
/*
* Cyrix configuration registers, accessible as IO ports.
*/
#define CCR0 0xc0 /* Configuration control register 0 */
#define CCR0_NC0 0x01 /* First 64K of each 1M memory region is
non-cacheable */
#define CCR0_NC1 0x02 /* 640K-1M region is non-cacheable */
#define CCR0_A20M 0x04 /* Enables A20M# input pin */
#define CCR0_KEN 0x08 /* Enables KEN# input pin */
#define CCR0_FLUSH 0x10 /* Enables FLUSH# input pin */
#define CCR0_BARB 0x20 /* Flushes internal cache when entering hold
state */
#define CCR0_CO 0x40 /* Cache org: 1=direct mapped, 0=2x set
assoc */
#define CCR0_SUSPEND 0x80 /* Enables SUSP# and SUSPA# pins */
#define CCR1 0xc1 /* Configuration control register 1 */
#define CCR1_RPL 0x01 /* Enables RPLSET and RPLVAL# pins */
#define CCR1_SMI 0x02 /* Enables SMM pins */
#define CCR1_SMAC 0x04 /* System management memory access */
#define CCR1_MMAC 0x08 /* Main memory access */
#define CCR1_NO_LOCK 0x10 /* Negate LOCK# */
#define CCR1_SM3 0x80 /* SMM address space address region 3 */
#define CCR2 0xc2
#define CCR2_WB 0x02 /* Enables WB cache interface pins */
#define CCR2_SADS 0x02 /* Slow ADS */
#define CCR2_LOCK_NW 0x04 /* LOCK NW Bit */
#define CCR2_SUSP_HLT 0x08 /* Suspend on HALT */
#define CCR2_WT1 0x10 /* WT region 1 */
#define CCR2_WPR1 0x10 /* Write-protect region 1 */
#define CCR2_BARB 0x20 /* Flushes write-back cache when entering
hold state. */
#define CCR2_BWRT 0x40 /* Enables burst write cycles */
#define CCR2_USE_SUSP 0x80 /* Enables suspend pins */
#define CCR3 0xc3
#define CCR3_SMILOCK 0x01 /* SMM register lock */
#define CCR3_NMI 0x02 /* Enables NMI during SMM */
#define CCR3_LINBRST 0x04 /* Linear address burst cycles */
#define CCR3_SMMMODE 0x08 /* SMM Mode */
#define CCR3_MAPEN0 0x10 /* Enables Map0 */
#define CCR3_MAPEN1 0x20 /* Enables Map1 */
#define CCR3_MAPEN2 0x40 /* Enables Map2 */
#define CCR3_MAPEN3 0x80 /* Enables Map3 */
#define CCR4 0xe8
#define CCR4_IOMASK 0x07
#define CCR4_MEM 0x08 /* Enables momory bypassing */
#define CCR4_DTE 0x10 /* Enables directory table entry cache */
#define CCR4_FASTFPE 0x20 /* Fast FPU exception */
#define CCR4_CPUID 0x80 /* Enables CPUID instruction */
#define CCR5 0xe9
#define CCR5_WT_ALLOC 0x01 /* Write-through allocate */
#define CCR5_SLOP 0x02 /* LOOP instruction slowed down */
#define CCR5_LBR1 0x10 /* Local bus region 1 */
#define CCR5_ARREN 0x20 /* Enables ARR region */
#define CCR6 0xea
#define CCR7 0xeb
/* Performance Control Register (5x86 only). */
#define PCR0 0x20
#define PCR0_RSTK 0x01 /* Enables return stack */
#define PCR0_BTB 0x02 /* Enables branch target buffer */
#define PCR0_LOOP 0x04 /* Enables loop */
#define PCR0_AIS 0x08 /* Enables all instrcutions stalled to
serialize pipe. */
#define PCR0_MLR 0x10 /* Enables reordering of misaligned loads */
#define PCR0_BTBRT 0x40 /* Enables BTB test register. */
#define PCR0_LSSER 0x80 /* Disable reorder */
/* Device Identification Registers */
#define DIR0 0xfe
#define DIR1 0xff
/*
* The following four 3-byte registers control the non-cacheable regions.
* These registers must be written as three separate bytes.
*
* NCRx+0: A31-A24 of starting address
* NCRx+1: A23-A16 of starting address
* NCRx+2: A15-A12 of starting address | NCR_SIZE_xx.
*
* The non-cacheable region's starting address must be aligned to the
* size indicated by the NCR_SIZE_xx field.
*/
#define NCR1 0xc4
#define NCR2 0xc7
#define NCR3 0xca
#define NCR4 0xcd
#define NCR_SIZE_0K 0
#define NCR_SIZE_4K 1
#define NCR_SIZE_8K 2
#define NCR_SIZE_16K 3
#define NCR_SIZE_32K 4
#define NCR_SIZE_64K 5
#define NCR_SIZE_128K 6
#define NCR_SIZE_256K 7
#define NCR_SIZE_512K 8
#define NCR_SIZE_1M 9
#define NCR_SIZE_2M 10
#define NCR_SIZE_4M 11
#define NCR_SIZE_8M 12
#define NCR_SIZE_16M 13
#define NCR_SIZE_32M 14
#define NCR_SIZE_4G 15
/*
* The address region registers are used to specify the location and
* size for the eight address regions.
*
* ARRx + 0: A31-A24 of start address
* ARRx + 1: A23-A16 of start address
* ARRx + 2: A15-A12 of start address | ARR_SIZE_xx
*/
#define ARR0 0xc4
#define ARR1 0xc7
#define ARR2 0xca
#define ARR3 0xcd
#define ARR4 0xd0
#define ARR5 0xd3
#define ARR6 0xd6
#define ARR7 0xd9
#define ARR_SIZE_0K 0
#define ARR_SIZE_4K 1
#define ARR_SIZE_8K 2
#define ARR_SIZE_16K 3
#define ARR_SIZE_32K 4
#define ARR_SIZE_64K 5
#define ARR_SIZE_128K 6
#define ARR_SIZE_256K 7
#define ARR_SIZE_512K 8
#define ARR_SIZE_1M 9
#define ARR_SIZE_2M 10
#define ARR_SIZE_4M 11
#define ARR_SIZE_8M 12
#define ARR_SIZE_16M 13
#define ARR_SIZE_32M 14
#define ARR_SIZE_4G 15
/*
* The region control registers specify the attributes associated with
* the ARRx addres regions.
*/
#define RCR0 0xdc
#define RCR1 0xdd
#define RCR2 0xde
#define RCR3 0xdf
#define RCR4 0xe0
#define RCR5 0xe1
#define RCR6 0xe2
#define RCR7 0xe3
#define RCR_RCD 0x01 /* Disables caching for ARRx (x = 0-6). */
#define RCR_RCE 0x01 /* Enables caching for ARR7. */
#define RCR_WWO 0x02 /* Weak write ordering. */
#define RCR_WL 0x04 /* Weak locking. */
#define RCR_WG 0x08 /* Write gathering. */
#define RCR_WT 0x10 /* Write-through. */
#define RCR_NLB 0x20 /* LBA# pin is not asserted. */
/* AMD Write Allocate Top-Of-Memory and Control Register */
#define AMD_WT_ALLOC_TME 0x40000 /* top-of-memory enable */
#define AMD_WT_ALLOC_PRE 0x20000 /* programmable range enable */
#define AMD_WT_ALLOC_FRE 0x10000 /* fixed (A0000-FFFFF) range enable */
#ifndef LOCORE
static __inline u_char
read_cyrix_reg(u_char reg)
{
outb(0x22, reg);
return inb(0x23);
}
static __inline void
write_cyrix_reg(u_char reg, u_char data)
{
outb(0x22, reg);
outb(0x23, data);
}
#endif
#endif /* !_MACHINE_SPECIALREG_H_ */