/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * Copyright (C) 2020-2023 Loongson Technology Corporation Limited */ #ifndef __UAPI_ASM_LOONGARCH_KVM_H #define __UAPI_ASM_LOONGARCH_KVM_H #include <linux/types.h> /* * KVM LoongArch specific structures and definitions. * * Some parts derived from the x86 version of this file. */ #define __KVM_HAVE_READONLY_MEM #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 #define KVM_DIRTY_LOG_PAGE_OFFSET 64 /* * for KVM_GET_REGS and KVM_SET_REGS */ struct kvm_regs { /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ __u64 gpr[32]; __u64 pc; }; /* * for KVM_GET_FPU and KVM_SET_FPU */ struct kvm_fpu { __u32 fcsr; __u64 fcc; /* 8x8 */ struct kvm_fpureg { __u64 val64[4]; } fpr[32]; }; /* * For LoongArch, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access various * registers. The id field is broken down as follows: * * bits[63..52] - As per linux/kvm.h * bits[51..32] - Must be zero. * bits[31..16] - Register set. * * Register set = 0: GP registers from kvm_regs (see definitions below). * * Register set = 1: CSR registers. * * Register set = 2: KVM specific registers (see definitions below). * * Register set = 3: FPU / SIMD registers (see definitions below). * * Other sets registers may be added in the future. Each set would * have its own identifier in bits[31..16]. */ #define KVM_REG_LOONGARCH_GPR (KVM_REG_LOONGARCH | 0x00000ULL) #define KVM_REG_LOONGARCH_CSR (KVM_REG_LOONGARCH | 0x10000ULL) #define KVM_REG_LOONGARCH_KVM (KVM_REG_LOONGARCH | 0x20000ULL) #define KVM_REG_LOONGARCH_FPSIMD (KVM_REG_LOONGARCH | 0x30000ULL) #define KVM_REG_LOONGARCH_CPUCFG (KVM_REG_LOONGARCH | 0x40000ULL) #define KVM_REG_LOONGARCH_MASK (KVM_REG_LOONGARCH | 0x70000ULL) #define KVM_CSR_IDX_MASK 0x7fff #define KVM_CPUCFG_IDX_MASK 0x7fff /* * KVM_REG_LOONGARCH_KVM - KVM specific control registers. */ #define KVM_REG_LOONGARCH_COUNTER (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 1) #define KVM_REG_LOONGARCH_VCPU_RESET (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 2) #define LOONGARCH_REG_SHIFT 3 #define LOONGARCH_REG_64(TYPE, REG) (TYPE | KVM_REG_SIZE_U64 | (REG << LOONGARCH_REG_SHIFT)) #define KVM_IOC_CSRID(REG) LOONGARCH_REG_64(KVM_REG_LOONGARCH_CSR, REG) #define KVM_IOC_CPUCFG(REG) LOONGARCH_REG_64(KVM_REG_LOONGARCH_CPUCFG, REG) struct kvm_debug_exit_arch { }; /* for KVM_SET_GUEST_DEBUG */ struct kvm_guest_debug_arch { }; /* definition of registers in kvm_run */ struct kvm_sync_regs { }; /* dummy definition */ struct kvm_sregs { }; struct kvm_iocsr_entry { __u32 addr; __u32 pad; __u64 data; }; #define KVM_NR_IRQCHIPS 1 #define KVM_IRQCHIP_NUM_PINS 64 #define KVM_MAX_CORES 256 #endif /* __UAPI_ASM_LOONGARCH_KVM_H */