tools/arch/mips/include/uapi/asm/kvm.h

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   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * This file is subject to the terms and conditions of the GNU General Public
   4  * License.  See the file "COPYING" in the main directory of this archive
   5  * for more details.
   6  *
   7  * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
   8  * Copyright (C) 2013 Cavium, Inc.
   9  * Authors: Sanjay Lal <sanjayl@kymasys.com>
  10  */
  11 
  12 #ifndef __LINUX_KVM_MIPS_H
  13 #define __LINUX_KVM_MIPS_H
  14 
  15 #include <linux/types.h>
  16 
  17 /*
  18  * KVM MIPS specific structures and definitions.
  19  *
  20  * Some parts derived from the x86 version of this file.
  21  */
  22 
  23 /*
  24  * for KVM_GET_REGS and KVM_SET_REGS
  25  *
  26  * If Config[AT] is zero (32-bit CPU), the register contents are
  27  * stored in the lower 32-bits of the struct kvm_regs fields and sign
  28  * extended to 64-bits.
  29  */
  30 struct kvm_regs {
  31         /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
  32         __u64 gpr[32];
  33         __u64 hi;
  34         __u64 lo;
  35         __u64 pc;
  36 };
  37 
  38 /*
  39  * for KVM_GET_FPU and KVM_SET_FPU
  40  */
  41 struct kvm_fpu {
  42 };
  43 
  44 
  45 /*
  46  * For MIPS, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access various
  47  * registers.  The id field is broken down as follows:
  48  *
  49  *  bits[63..52] - As per linux/kvm.h
  50  *  bits[51..32] - Must be zero.
  51  *  bits[31..16] - Register set.
  52  *
  53  * Register set = 0: GP registers from kvm_regs (see definitions below).
  54  *
  55  * Register set = 1: CP0 registers.
  56  *  bits[15..8]  - Must be zero.
  57  *  bits[7..3]   - Register 'rd'  index.
  58  *  bits[2..0]   - Register 'sel' index.
  59  *
  60  * Register set = 2: KVM specific registers (see definitions below).
  61  *
  62  * Register set = 3: FPU / MSA registers (see definitions below).
  63  *
  64  * Other sets registers may be added in the future.  Each set would
  65  * have its own identifier in bits[31..16].
  66  */
  67 
  68 #define KVM_REG_MIPS_GP         (KVM_REG_MIPS | 0x0000000000000000ULL)
  69 #define KVM_REG_MIPS_CP0        (KVM_REG_MIPS | 0x0000000000010000ULL)
  70 #define KVM_REG_MIPS_KVM        (KVM_REG_MIPS | 0x0000000000020000ULL)
  71 #define KVM_REG_MIPS_FPU        (KVM_REG_MIPS | 0x0000000000030000ULL)
  72 
  73 
  74 /*
  75  * KVM_REG_MIPS_GP - General purpose registers from kvm_regs.
  76  */
  77 
  78 #define KVM_REG_MIPS_R0         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  0)
  79 #define KVM_REG_MIPS_R1         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  1)
  80 #define KVM_REG_MIPS_R2         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  2)
  81 #define KVM_REG_MIPS_R3         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  3)
  82 #define KVM_REG_MIPS_R4         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  4)
  83 #define KVM_REG_MIPS_R5         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  5)
  84 #define KVM_REG_MIPS_R6         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  6)
  85 #define KVM_REG_MIPS_R7         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  7)
  86 #define KVM_REG_MIPS_R8         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  8)
  87 #define KVM_REG_MIPS_R9         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 |  9)
  88 #define KVM_REG_MIPS_R10        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 10)
  89 #define KVM_REG_MIPS_R11        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 11)
  90 #define KVM_REG_MIPS_R12        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 12)
  91 #define KVM_REG_MIPS_R13        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 13)
  92 #define KVM_REG_MIPS_R14        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 14)
  93 #define KVM_REG_MIPS_R15        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 15)
  94 #define KVM_REG_MIPS_R16        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 16)
  95 #define KVM_REG_MIPS_R17        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 17)
  96 #define KVM_REG_MIPS_R18        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 18)
  97 #define KVM_REG_MIPS_R19        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 19)
  98 #define KVM_REG_MIPS_R20        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 20)
  99 #define KVM_REG_MIPS_R21        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 21)
 100 #define KVM_REG_MIPS_R22        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 22)
 101 #define KVM_REG_MIPS_R23        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 23)
 102 #define KVM_REG_MIPS_R24        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 24)
 103 #define KVM_REG_MIPS_R25        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 25)
 104 #define KVM_REG_MIPS_R26        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 26)
 105 #define KVM_REG_MIPS_R27        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 27)
 106 #define KVM_REG_MIPS_R28        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 28)
 107 #define KVM_REG_MIPS_R29        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 29)
 108 #define KVM_REG_MIPS_R30        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 30)
 109 #define KVM_REG_MIPS_R31        (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 31)
 110 
 111 #define KVM_REG_MIPS_HI         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 32)
 112 #define KVM_REG_MIPS_LO         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 33)
 113 #define KVM_REG_MIPS_PC         (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 34)
 114 
 115 
 116 /*
 117  * KVM_REG_MIPS_KVM - KVM specific control registers.
 118  */
 119 
 120 /*
 121  * CP0_Count control
 122  * DC:    Set 0: Master disable CP0_Count and set COUNT_RESUME to now
 123  *        Set 1: Master re-enable CP0_Count with unchanged bias, handling timer
 124  *               interrupts since COUNT_RESUME
 125  *        This can be used to freeze the timer to get a consistent snapshot of
 126  *        the CP0_Count and timer interrupt pending state, while also resuming
 127  *        safely without losing time or guest timer interrupts.
 128  * Other: Reserved, do not change.
 129  */
 130 #define KVM_REG_MIPS_COUNT_CTL      (KVM_REG_MIPS_KVM | KVM_REG_SIZE_U64 | 0)
 131 #define KVM_REG_MIPS_COUNT_CTL_DC       0x00000001
 132 
 133 /*
 134  * CP0_Count resume monotonic nanoseconds
 135  * The monotonic nanosecond time of the last set of COUNT_CTL.DC (master
 136  * disable). Any reads and writes of Count related registers while
 137  * COUNT_CTL.DC=1 will appear to occur at this time. When COUNT_CTL.DC is
 138  * cleared again (master enable) any timer interrupts since this time will be
 139  * emulated.
 140  * Modifications to times in the future are rejected.
 141  */
 142 #define KVM_REG_MIPS_COUNT_RESUME   (KVM_REG_MIPS_KVM | KVM_REG_SIZE_U64 | 1)
 143 /*
 144  * CP0_Count rate in Hz
 145  * Specifies the rate of the CP0_Count timer in Hz. Modifications occur without
 146  * discontinuities in CP0_Count.
 147  */
 148 #define KVM_REG_MIPS_COUNT_HZ       (KVM_REG_MIPS_KVM | KVM_REG_SIZE_U64 | 2)
 149 
 150 
 151 /*
 152  * KVM_REG_MIPS_FPU - Floating Point and MIPS SIMD Architecture (MSA) registers.
 153  *
 154  *  bits[15..8]  - Register subset (see definitions below).
 155  *  bits[7..5]   - Must be zero.
 156  *  bits[4..0]   - Register number within register subset.
 157  */
 158 
 159 #define KVM_REG_MIPS_FPR        (KVM_REG_MIPS_FPU | 0x0000000000000000ULL)
 160 #define KVM_REG_MIPS_FCR        (KVM_REG_MIPS_FPU | 0x0000000000000100ULL)
 161 #define KVM_REG_MIPS_MSACR      (KVM_REG_MIPS_FPU | 0x0000000000000200ULL)
 162 
 163 /*
 164  * KVM_REG_MIPS_FPR - Floating point / Vector registers.
 165  */
 166 #define KVM_REG_MIPS_FPR_32(n)  (KVM_REG_MIPS_FPR | KVM_REG_SIZE_U32  | (n))
 167 #define KVM_REG_MIPS_FPR_64(n)  (KVM_REG_MIPS_FPR | KVM_REG_SIZE_U64  | (n))
 168 #define KVM_REG_MIPS_VEC_128(n) (KVM_REG_MIPS_FPR | KVM_REG_SIZE_U128 | (n))
 169 
 170 /*
 171  * KVM_REG_MIPS_FCR - Floating point control registers.
 172  */
 173 #define KVM_REG_MIPS_FCR_IR     (KVM_REG_MIPS_FCR | KVM_REG_SIZE_U32 |  0)
 174 #define KVM_REG_MIPS_FCR_CSR    (KVM_REG_MIPS_FCR | KVM_REG_SIZE_U32 | 31)
 175 
 176 /*
 177  * KVM_REG_MIPS_MSACR - MIPS SIMD Architecture (MSA) control registers.
 178  */
 179 #define KVM_REG_MIPS_MSA_IR      (KVM_REG_MIPS_MSACR | KVM_REG_SIZE_U32 |  0)
 180 #define KVM_REG_MIPS_MSA_CSR     (KVM_REG_MIPS_MSACR | KVM_REG_SIZE_U32 |  1)
 181 
 182 
 183 /*
 184  * KVM MIPS specific structures and definitions
 185  *
 186  */
 187 struct kvm_debug_exit_arch {
 188         __u64 epc;
 189 };
 190 
 191 /* for KVM_SET_GUEST_DEBUG */
 192 struct kvm_guest_debug_arch {
 193 };
 194 
 195 /* definition of registers in kvm_run */
 196 struct kvm_sync_regs {
 197 };
 198 
 199 /* dummy definition */
 200 struct kvm_sregs {
 201 };
 202 
 203 struct kvm_mips_interrupt {
 204         /* in */
 205         __u32 cpu;
 206         __u32 irq;
 207 };
 208 
 209 #endif /* __LINUX_KVM_MIPS_H */
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root/tools/arch/mips/include/uapi/asm/kvm.h

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