1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited 4 */ 5 6 #ifndef __UAPI_ASM_LOONGARCH_KVM_H 7 #define __UAPI_ASM_LOONGARCH_KVM_H 8 9 #include <linux/types.h> 10 11 /* 12 * KVM LoongArch specific structures and definitions. 13 * 14 * Some parts derived from the x86 version of this file. 15 */ 16 17 #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 18 #define KVM_DIRTY_LOG_PAGE_OFFSET 64 19 20 #define KVM_GUESTDBG_USE_SW_BP 0x00010000 21 22 /* 23 * for KVM_GET_REGS and KVM_SET_REGS 24 */ 25 struct kvm_regs { 26 /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ 27 __u64 gpr[32]; 28 __u64 pc; 29 }; 30 31 /* 32 * for KVM_GET_FPU and KVM_SET_FPU 33 */ 34 struct kvm_fpu { 35 __u32 fcsr; 36 __u64 fcc; /* 8x8 */ 37 struct kvm_fpureg { 38 __u64 val64[4]; 39 } fpr[32]; 40 }; 41 42 /* 43 * For LoongArch, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access various 44 * registers. The id field is broken down as follows: 45 * 46 * bits[63..52] - As per linux/kvm.h 47 * bits[51..32] - Must be zero. 48 * bits[31..16] - Register set. 49 * 50 * Register set = 0: GP registers from kvm_regs (see definitions below). 51 * 52 * Register set = 1: CSR registers. 53 * 54 * Register set = 2: KVM specific registers (see definitions below). 55 * 56 * Register set = 3: FPU / SIMD registers (see definitions below). 57 * 58 * Other sets registers may be added in the future. Each set would 59 * have its own identifier in bits[31..16]. 60 */ 61 62 #define KVM_REG_LOONGARCH_GPR (KVM_REG_LOONGARCH | 0x00000ULL) 63 #define KVM_REG_LOONGARCH_CSR (KVM_REG_LOONGARCH | 0x10000ULL) 64 #define KVM_REG_LOONGARCH_KVM (KVM_REG_LOONGARCH | 0x20000ULL) 65 #define KVM_REG_LOONGARCH_FPSIMD (KVM_REG_LOONGARCH | 0x30000ULL) 66 #define KVM_REG_LOONGARCH_CPUCFG (KVM_REG_LOONGARCH | 0x40000ULL) 67 #define KVM_REG_LOONGARCH_LBT (KVM_REG_LOONGARCH | 0x50000ULL) 68 #define KVM_REG_LOONGARCH_MASK (KVM_REG_LOONGARCH | 0x70000ULL) 69 #define KVM_CSR_IDX_MASK 0x7fff 70 #define KVM_CPUCFG_IDX_MASK 0x7fff 71 72 /* 73 * KVM_REG_LOONGARCH_KVM - KVM specific control registers. 74 */ 75 76 #define KVM_REG_LOONGARCH_COUNTER (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 1) 77 #define KVM_REG_LOONGARCH_VCPU_RESET (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 2) 78 /* Debugging: Special instruction for software breakpoint */ 79 #define KVM_REG_LOONGARCH_DEBUG_INST (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 3) 80 81 /* LBT registers */ 82 #define KVM_REG_LOONGARCH_LBT_SCR0 (KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 1) 83 #define KVM_REG_LOONGARCH_LBT_SCR1 (KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 2) 84 #define KVM_REG_LOONGARCH_LBT_SCR2 (KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 3) 85 #define KVM_REG_LOONGARCH_LBT_SCR3 (KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 4) 86 #define KVM_REG_LOONGARCH_LBT_EFLAGS (KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 5) 87 #define KVM_REG_LOONGARCH_LBT_FTOP (KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 6) 88 89 #define LOONGARCH_REG_SHIFT 3 90 #define LOONGARCH_REG_64(TYPE, REG) (TYPE | KVM_REG_SIZE_U64 | (REG << LOONGARCH_REG_SHIFT)) 91 #define KVM_IOC_CSRID(REG) LOONGARCH_REG_64(KVM_REG_LOONGARCH_CSR, REG) 92 #define KVM_IOC_CPUCFG(REG) LOONGARCH_REG_64(KVM_REG_LOONGARCH_CPUCFG, REG) 93 94 /* Device Control API on vm fd */ 95 #define KVM_LOONGARCH_VM_FEAT_CTRL 0 96 #define KVM_LOONGARCH_VM_FEAT_LSX 0 97 #define KVM_LOONGARCH_VM_FEAT_LASX 1 98 #define KVM_LOONGARCH_VM_FEAT_X86BT 2 99 #define KVM_LOONGARCH_VM_FEAT_ARMBT 3 100 #define KVM_LOONGARCH_VM_FEAT_MIPSBT 4 101 #define KVM_LOONGARCH_VM_FEAT_PMU 5 102 #define KVM_LOONGARCH_VM_FEAT_PV_IPI 6 103 #define KVM_LOONGARCH_VM_FEAT_PV_STEALTIME 7 104 105 /* Device Control API on vcpu fd */ 106 #define KVM_LOONGARCH_VCPU_CPUCFG 0 107 #define KVM_LOONGARCH_VCPU_PVTIME_CTRL 1 108 #define KVM_LOONGARCH_VCPU_PVTIME_GPA 0 109 110 struct kvm_debug_exit_arch { 111 }; 112 113 /* for KVM_SET_GUEST_DEBUG */ 114 struct kvm_guest_debug_arch { 115 }; 116 117 /* definition of registers in kvm_run */ 118 struct kvm_sync_regs { 119 }; 120 121 /* dummy definition */ 122 struct kvm_sregs { 123 }; 124 125 struct kvm_iocsr_entry { 126 __u32 addr; 127 __u32 pad; 128 __u64 data; 129 }; 130 131 #define KVM_NR_IRQCHIPS 1 132 #define KVM_IRQCHIP_NUM_PINS 64 133 #define KVM_MAX_CORES 256 134 135 #endif /* __UAPI_ASM_LOONGARCH_KVM_H */ 136