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      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 (at) 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[31..16] - 1 -> CP0 registers.
     62  *  bits[51..32] - Must be zero.
     63  *  bits[63..52] - As per linux/kvm.h
     64  *
     65  * Other sets registers may be added in the future.  Each set would
     66  * have its own identifier in bits[31..16].
     67  *
     68  * The registers defined in struct kvm_regs are also accessible, the
     69  * id values for these are below.
     70  */
     71 
     72 #define KVM_REG_MIPS_R0 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 0)
     73 #define KVM_REG_MIPS_R1 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 1)
     74 #define KVM_REG_MIPS_R2 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 2)
     75 #define KVM_REG_MIPS_R3 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 3)
     76 #define KVM_REG_MIPS_R4 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 4)
     77 #define KVM_REG_MIPS_R5 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 5)
     78 #define KVM_REG_MIPS_R6 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 6)
     79 #define KVM_REG_MIPS_R7 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 7)
     80 #define KVM_REG_MIPS_R8 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 8)
     81 #define KVM_REG_MIPS_R9 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 9)
     82 #define KVM_REG_MIPS_R10 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 10)
     83 #define KVM_REG_MIPS_R11 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 11)
     84 #define KVM_REG_MIPS_R12 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 12)
     85 #define KVM_REG_MIPS_R13 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 13)
     86 #define KVM_REG_MIPS_R14 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 14)
     87 #define KVM_REG_MIPS_R15 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 15)
     88 #define KVM_REG_MIPS_R16 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 16)
     89 #define KVM_REG_MIPS_R17 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 17)
     90 #define KVM_REG_MIPS_R18 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 18)
     91 #define KVM_REG_MIPS_R19 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 19)
     92 #define KVM_REG_MIPS_R20 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 20)
     93 #define KVM_REG_MIPS_R21 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 21)
     94 #define KVM_REG_MIPS_R22 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 22)
     95 #define KVM_REG_MIPS_R23 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 23)
     96 #define KVM_REG_MIPS_R24 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 24)
     97 #define KVM_REG_MIPS_R25 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 25)
     98 #define KVM_REG_MIPS_R26 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 26)
     99 #define KVM_REG_MIPS_R27 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 27)
    100 #define KVM_REG_MIPS_R28 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 28)
    101 #define KVM_REG_MIPS_R29 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 29)
    102 #define KVM_REG_MIPS_R30 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 30)
    103 #define KVM_REG_MIPS_R31 (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 31)
    104 
    105 #define KVM_REG_MIPS_HI (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 32)
    106 #define KVM_REG_MIPS_LO (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 33)
    107 #define KVM_REG_MIPS_PC (KVM_REG_MIPS | KVM_REG_SIZE_U64 | 34)
    108 
    109 /*
    110  * KVM MIPS specific structures and definitions
    111  *
    112  */
    113 struct kvm_debug_exit_arch {
    114 	__u64 epc;
    115 };
    116 
    117 /* for KVM_SET_GUEST_DEBUG */
    118 struct kvm_guest_debug_arch {
    119 };
    120 
    121 /* definition of registers in kvm_run */
    122 struct kvm_sync_regs {
    123 };
    124 
    125 /* dummy definition */
    126 struct kvm_sregs {
    127 };
    128 
    129 struct kvm_mips_interrupt {
    130 	/* in */
    131 	__u32 cpu;
    132 	__u32 irq;
    133 };
    134 
    135 #endif /* __LINUX_KVM_MIPS_H */
    136