arch/x86/include/sys/controlregs.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
  23  * Copyright 2018, Joyent, Inc.
  24  */
  25
  26 #ifndef _SYS_CONTROLREGS_H
  27 #define _SYS_CONTROLREGS_H
  28
  29 #ifndef _ASM
  30 #include <sys/types.h>
  31 #endif
  32
  33 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /*
  38  * This file describes the x86 architecture control registers which
  39  * are part of the privileged architecture.
  40  *
  41  * Many of these definitions are shared between IA-32-style and
  42  * AMD64-style processors.
  43  */
  44
  45 /* CR0 Register */
  46
  47 #define CR0_PG  0x80000000              /* paging enabled       */
  48 #define CR0_CD  0x40000000              /* cache disable        */
  49 #define CR0_NW  0x20000000              /* not writethrough     */
  50 #define CR0_AM  0x00040000              /* alignment mask       */
  51 #define CR0_WP  0x00010000              /* write protect        */
  52 #define CR0_NE  0x00000020              /* numeric error        */
  53 #define CR0_ET  0x00000010              /* extension type       */
  54 #define CR0_TS  0x00000008              /* task switch          */
  55 #define CR0_EM  0x00000004              /* emulation            */
  56 #define CR0_MP  0x00000002              /* monitor coprocessor  */
  57 #define CR0_PE  0x00000001              /* protection enabled   */
  58
  59 /* XX64 eliminate these compatibility defines */
  60
  61 #define CR0_CE  CR0_CD
  62 #define CR0_WT  CR0_NW
  63
  64 #define FMT_CR0 \
  65         "\20\40pg\37cd\36nw\35am\21wp\6ne\5et\4ts\3em\2mp\1pe"
  66
  67 /*
  68  * Set the FPU-related control bits to explain to the processor that
  69  * we're managing FPU state:
  70  * - set monitor coprocessor (allow TS bit to control FPU)
  71  * - set numeric exception (disable IGNNE# mechanism)
  72  * - set task switch (#nm on first fp instruction)
  73  * - clear emulate math bit (cause we're not emulating!)
  74  */
  75 #define CR0_ENABLE_FPU_FLAGS(cr)        \
  76         (((cr) | CR0_MP | CR0_NE | CR0_TS) & (uint32_t)~CR0_EM)
  77
  78 /*
  79  * Set the FPU-related control bits to explain to the processor that
  80  * we're -not- managing FPU state:
  81  * - set emulate (all fp instructions cause #nm)
  82  * - clear monitor coprocessor (so fwait/wait doesn't #nm)
  83  */
  84 #define CR0_DISABLE_FPU_FLAGS(cr)       \
  85         (((cr) | CR0_EM) & (uint32_t)~CR0_MP)
  86
  87 /* CR3 Register */
  88
  89 #define CR3_PCD 0x00000010              /* cache disable                */
  90 #define CR3_PWT 0x00000008              /* write through                */
  91 #if defined(_ASM)
  92 #define CR3_NOINVL_BIT  0x8000000000000000
  93 #else
  94 #define CR3_NOINVL_BIT  0x8000000000000000ULL /* no invalidation        */
  95 #endif
  96 #define PCID_NONE       0x000           /* generic PCID                 */
  97 #define PCID_KERNEL     0x000           /* kernel's PCID                */
  98 #define PCID_USER       0x001           /* user-space PCID              */
  99
 100 /* CR4 Register */
 101
 102 #define CR4_VME         0x0001          /* virtual-8086 mode extensions */
 103 #define CR4_PVI         0x0002          /* protected-mode virtual interrupts */
 104 #define CR4_TSD         0x0004          /* time stamp disable           */
 105 #define CR4_DE          0x0008          /* debugging extensions         */
 106 #define CR4_PSE         0x0010          /* page size extensions         */
 107 #define CR4_PAE         0x0020          /* physical address extension   */
 108 #define CR4_MCE         0x0040          /* machine check enable         */
 109 #define CR4_PGE         0x0080          /* page global enable           */
 110 #define CR4_PCE         0x0100          /* perf-monitoring counter enable */
 111 #define CR4_OSFXSR      0x0200          /* OS fxsave/fxrstor support    */
 112 #define CR4_OSXMMEXCPT  0x0400          /* OS unmasked exception support */
 113                                         /* 0x0800 reserved */
 114                                         /* 0x1000 reserved */
 115 #define CR4_VMXE        0x2000
 116 #define CR4_SMXE        0x4000
 117 #define CR4_PCIDE       0x20000         /* PCID enable */
 118 #define CR4_OSXSAVE     0x40000         /* OS xsave/xrestore support    */
 119 #define CR4_SMEP        0x100000        /* NX for user pages in kernel */
 120 #define CR4_SMAP        0x200000        /* kernel can't access user pages */
 121
 122 #define FMT_CR4                                         \
 123         "\20\26smap\25smep\23osxsav\22pcide"            \
 124         "\17smxe\16vmxe\13xmme\12fxsr\11pce\10pge"      \
 125         "\7mce\6pae\5pse\4de\3tsd\2pvi\1vme"
 126
 127 /*
 128  * Enable the SSE-related control bits to explain to the processor that
 129  * we're managing XMM state and exceptions
 130  */
 131 #define CR4_ENABLE_SSE_FLAGS(cr)        \
 132         ((cr) | CR4_OSFXSR | CR4_OSXMMEXCPT)
 133
 134 /*
 135  * Disable the SSE-related control bits to explain to the processor
 136  * that we're NOT managing XMM state
 137  */
 138 #define CR4_DISABLE_SSE_FLAGS(cr)       \
 139         ((cr) & ~(uint32_t)(CR4_OSFXSR | CR4_OSXMMEXCPT))
 140
 141 /* Intel's SYSENTER configuration registers */
 142
 143 #define MSR_INTC_SEP_CS 0x174           /* kernel code selector MSR */
 144 #define MSR_INTC_SEP_ESP 0x175          /* kernel esp MSR */
 145 #define MSR_INTC_SEP_EIP 0x176          /* kernel eip MSR */
 146
 147 /* Intel's microcode registers */
 148 #define MSR_INTC_UCODE_WRITE            0x79    /* microcode write */
 149 #define MSR_INTC_UCODE_REV              0x8b    /* microcode revision */
 150 #define INTC_UCODE_REV_SHIFT            32      /* Bits 63:32 */
 151
 152 /* Intel's platform identification */
 153 #define MSR_INTC_PLATFORM_ID            0x17
 154 #define INTC_PLATFORM_ID_SHIFT          50      /* Bit 52:50 */
 155 #define INTC_PLATFORM_ID_MASK           0x7
 156
 157 /* AMD's EFER register */
 158
 159 #define MSR_AMD_EFER    0xc0000080      /* extended feature enable MSR */
 160
 161 #define AMD_EFER_FFXSR  0x4000          /* fast fxsave/fxrstor          */
 162 #define AMD_EFER_SVME   0x1000          /* svm enable                   */
 163 #define AMD_EFER_NXE    0x0800          /* no-execute enable            */
 164 #define AMD_EFER_LMA    0x0400          /* long mode active (read-only) */
 165 #define AMD_EFER_LME    0x0100          /* long mode enable             */
 166 #define AMD_EFER_SCE    0x0001          /* system call extensions       */
 167
 168 #define FMT_AMD_EFER \
 169         "\20\17ffxsr\15svme\14nxe\13lma\11lme\1sce"
 170
 171 /* AMD's SYSCFG register */
 172
 173 #define MSR_AMD_SYSCFG  0xc0000010      /* system configuration MSR */
 174
 175 #define AMD_SYSCFG_TOM2 0x200000        /* MtrrTom2En */
 176 #define AMD_SYSCFG_MVDM 0x100000        /* MtrrVarDramEn */
 177 #define AMD_SYSCFG_MFDM 0x080000        /* MtrrFixDramModEn */
 178 #define AMD_SYSCFG_MFDE 0x040000        /* MtrrFixDramEn */
 179
 180 #define FMT_AMD_SYSCFG \
 181         "\20\26tom2\25mvdm\24mfdm\23mfde"
 182
 183 /* AMD's syscall/sysret MSRs */
 184
 185 #define MSR_AMD_STAR    0xc0000081      /* %cs:%ss:%cs:%ss:%eip for syscall */
 186 #define MSR_AMD_LSTAR   0xc0000082      /* target %rip of 64-bit syscall */
 187 #define MSR_AMD_CSTAR   0xc0000083      /* target %rip of 32-bit syscall */
 188 #define MSR_AMD_SFMASK  0xc0000084      /* syscall flag mask */
 189
 190 /* AMD's FS.base and GS.base MSRs */
 191
 192 #define MSR_AMD_FSBASE  0xc0000100      /* 64-bit base address for %fs */
 193 #define MSR_AMD_GSBASE  0xc0000101      /* 64-bit base address for %gs */
 194 #define MSR_AMD_KGSBASE 0xc0000102      /* swapgs swaps this with gsbase */
 195 #define MSR_AMD_TSCAUX  0xc0000103      /* %ecx value on rdtscp insn */
 196
 197 /* AMD's configuration MSRs, weakly documented in the revision guide */
 198
 199 #define MSR_AMD_DC_CFG  0xc0011022
 200
 201 #define AMD_DC_CFG_DIS_CNV_WC_SSO       (UINT64_C(1) << 3)
 202 #define AMD_DC_CFG_DIS_SMC_CHK_BUF      (UINT64_C(1) << 10)
 203
 204 /* AMD's HWCR MSR */
 205
 206 #define MSR_AMD_HWCR    0xc0010015
 207
 208 #define AMD_HWCR_TLBCACHEDIS            (UINT64_C(1) << 3)
 209 #define AMD_HWCR_FFDIS                  0x00040 /* disable TLB Flush Filter */
 210 #define AMD_HWCR_MCI_STATUS_WREN        0x40000 /* enable write of MCi_STATUS */
 211
 212 /* AMD's NorthBridge Config MSR, SHOULD ONLY BE WRITTEN TO BY BIOS */
 213
 214 #define MSR_AMD_NB_CFG  0xc001001f
 215
 216 #define AMD_NB_CFG_SRQ_HEARTBEAT        (UINT64_C(1) << 20)
 217 #define AMD_NB_CFG_SRQ_SPR              (UINT64_C(1) << 32)
 218
 219 #define MSR_AMD_BU_CFG  0xc0011023
 220
 221 #define AMD_BU_CFG_E298                 (UINT64_C(1) << 1)
 222
 223 #define MSR_AMD_DE_CFG  0xc0011029
 224
 225 #define AMD_DE_CFG_E721                 (UINT64_C(1))
 226
 227 /* AMD's osvw MSRs */
 228 #define MSR_AMD_OSVW_ID_LEN             0xc0010140
 229 #define MSR_AMD_OSVW_STATUS             0xc0010141
 230
 231
 232 #define OSVW_ID_LEN_MASK                0xffffULL
 233 #define OSVW_ID_CNT_PER_MSR             64
 234
 235 /*
 236  * Enable PCI Extended Configuration Space (ECS) on Greyhound
 237  */
 238 #define AMD_GH_NB_CFG_EN_ECS            (UINT64_C(1) << 46)
 239
 240 /* AMD microcode patch loader */
 241 #define MSR_AMD_PATCHLEVEL      0x8b
 242 #define MSR_AMD_PATCHLOADER     0xc0010020
 243
 244 #ifdef __cplusplus
 245 }
 246 #endif
 247
 248 #endif  /* !_SYS_CONTROLREGS_H */