linux-headers/asm-mips/kvm.h

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
   7  * Copyright (C) 2013 Cavium, Inc.
   8  * Authors: Sanjay Lal <sanjayl@kymasys.com>
   9  */
  10
  11 #ifndef __LINUX_KVM_MIPS_H
  12 #define __LINUX_KVM_MIPS_H
  13
  14 #include <linux/types.h>
  15
  16 /*
  17  * KVM MIPS specific structures and definitions.
  18  *
  19  * Some parts derived from the x86 version of this file.
  20  */
  21
  22 /*
  23  * for KVM_GET_REGS and KVM_SET_REGS
  24  *
  25  * If Config[AT] is zero (32-bit CPU), the register contents are
  26  * stored in the lower 32-bits of the struct kvm_regs fields and sign
  27  * extended to 64-bits.
  28  */
  29 struct kvm_regs {
  30         /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
  31         __u64 gpr[32];
  32         __u64 hi;
  33         __u64 lo;
  34         __u64 pc;
  35 };
  36
  37 /*
  38  * for KVM_GET_FPU and KVM_SET_FPU
  39  *
  40  * If Status[FR] is zero (32-bit FPU), the upper 32-bits of the FPRs
  41  * are zero filled.
  42  */
  43 struct kvm_fpu {
  44         __u64 fpr[32];
  45         __u32 fir;
  46         __u32 fccr;
  47         __u32 fexr;
  48         __u32 fenr;
  49         __u32 fcsr;
  50         __u32 pad;
  51 };
  52
  53
  54 /*
  55  * For MIPS, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access CP0
  56  * registers.  The id field is broken down as follows:
  57  *
  58  *  bits[2..0]   - Register 'sel' index.
  59  *  bits[7..3]   - Register 'rd'  index.
  60  *  bits[15..8]  - Must be zero.
  61  *  bits[63..16] - 1 -> CP0 registers.
  62  *
  63  * Other sets registers may be added in the future.  Each set would
  64  * have its own identifier in bits[63..16].
  65  *
  66  * The addr field of struct kvm_one_reg must point to an aligned
  67  * 64-bit wide location.  For registers that are narrower than
  68  * 64-bits, the value is stored in the low order bits of the location,
  69  * and sign extended to 64-bits.
  70  *
  71  * The registers defined in struct kvm_regs are also accessible, the
  72  * id values for these are below.
  73  */
  74
  75 #define KVM_REG_MIPS_R0 0
  76 #define KVM_REG_MIPS_R1 1
  77 #define KVM_REG_MIPS_R2 2
  78 #define KVM_REG_MIPS_R3 3
  79 #define KVM_REG_MIPS_R4 4
  80 #define KVM_REG_MIPS_R5 5
  81 #define KVM_REG_MIPS_R6 6
  82 #define KVM_REG_MIPS_R7 7
  83 #define KVM_REG_MIPS_R8 8
  84 #define KVM_REG_MIPS_R9 9
  85 #define KVM_REG_MIPS_R10 10
  86 #define KVM_REG_MIPS_R11 11
  87 #define KVM_REG_MIPS_R12 12
  88 #define KVM_REG_MIPS_R13 13
  89 #define KVM_REG_MIPS_R14 14
  90 #define KVM_REG_MIPS_R15 15
  91 #define KVM_REG_MIPS_R16 16
  92 #define KVM_REG_MIPS_R17 17
  93 #define KVM_REG_MIPS_R18 18
  94 #define KVM_REG_MIPS_R19 19
  95 #define KVM_REG_MIPS_R20 20
  96 #define KVM_REG_MIPS_R21 21
  97 #define KVM_REG_MIPS_R22 22
  98 #define KVM_REG_MIPS_R23 23
  99 #define KVM_REG_MIPS_R24 24
 100 #define KVM_REG_MIPS_R25 25
 101 #define KVM_REG_MIPS_R26 26
 102 #define KVM_REG_MIPS_R27 27
 103 #define KVM_REG_MIPS_R28 28
 104 #define KVM_REG_MIPS_R29 29
 105 #define KVM_REG_MIPS_R30 30
 106 #define KVM_REG_MIPS_R31 31
 107
 108 #define KVM_REG_MIPS_HI 32
 109 #define KVM_REG_MIPS_LO 33
 110 #define KVM_REG_MIPS_PC 34
 111
 112 /*
 113  * KVM MIPS specific structures and definitions
 114  *
 115  */
 116 struct kvm_debug_exit_arch {
 117         __u64 epc;
 118 };
 119
 120 /* for KVM_SET_GUEST_DEBUG */
 121 struct kvm_guest_debug_arch {
 122 };
 123
 124 /* definition of registers in kvm_run */
 125 struct kvm_sync_regs {
 126 };
 127
 128 /* dummy definition */
 129 struct kvm_sregs {
 130 };
 131
 132 struct kvm_mips_interrupt {
 133         /* in */
 134         __u32 cpu;
 135         __u32 irq;
 136 };
 137
 138 #endif /* __LINUX_KVM_MIPS_H */