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/* 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_COALESCED_MMIO_PAGE_OFFSET 1
#define KVM_DIRTY_LOG_PAGE_OFFSET 64
#define KVM_GUESTDBG_USE_SW_BP 0x00010000
/*
* 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)
/* Debugging: Special instruction for software breakpoint */
#define KVM_REG_LOONGARCH_DEBUG_INST (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 3)
#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)
#define KVM_LOONGARCH_VCPU_CPUCFG 0
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 */
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