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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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 * Copyright (C) 2020-2023 Loongson Technology Corporation Limited
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 */
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#ifndef __UAPI_ASM_LOONGARCH_KVM_H
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#define __UAPI_ASM_LOONGARCH_KVM_H
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#include <linux/types.h>
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#define __KVM_HAVE_IRQ_LINE
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/*
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 * KVM LoongArch specific structures and definitions.
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 *
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 * Some parts derived from the x86 version of this file.
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 */
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#define KVM_COALESCED_MMIO_PAGE_OFFSET	1
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#define KVM_DIRTY_LOG_PAGE_OFFSET	64
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#define KVM_GUESTDBG_USE_SW_BP		0x00010000
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/*
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 * for KVM_GET_REGS and KVM_SET_REGS
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 */
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struct kvm_regs {
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	/* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
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	__u64 gpr[32];
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	__u64 pc;
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};
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/*
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 * for KVM_GET_FPU and KVM_SET_FPU
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 */
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struct kvm_fpu {
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	__u32 fcsr;
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	__u64 fcc;    /* 8x8 */
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	struct kvm_fpureg {
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		__u64 val64[4];
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	} fpr[32];
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};
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/*
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 * For LoongArch, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access various
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 * registers.  The id field is broken down as follows:
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 *
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 *  bits[63..52] - As per linux/kvm.h
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 *  bits[51..32] - Must be zero.
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 *  bits[31..16] - Register set.
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 *
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 * Register set = 0: GP registers from kvm_regs (see definitions below).
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 *
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 * Register set = 1: CSR registers.
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 *
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 * Register set = 2: KVM specific registers (see definitions below).
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 *
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 * Register set = 3: FPU / SIMD registers (see definitions below).
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 *
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 * Other sets registers may be added in the future.  Each set would
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 * have its own identifier in bits[31..16].
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 */
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#define KVM_REG_LOONGARCH_GPR		(KVM_REG_LOONGARCH | 0x00000ULL)
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#define KVM_REG_LOONGARCH_CSR		(KVM_REG_LOONGARCH | 0x10000ULL)
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#define KVM_REG_LOONGARCH_KVM		(KVM_REG_LOONGARCH | 0x20000ULL)
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#define KVM_REG_LOONGARCH_FPSIMD	(KVM_REG_LOONGARCH | 0x30000ULL)
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#define KVM_REG_LOONGARCH_CPUCFG	(KVM_REG_LOONGARCH | 0x40000ULL)
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#define KVM_REG_LOONGARCH_LBT		(KVM_REG_LOONGARCH | 0x50000ULL)
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#define KVM_REG_LOONGARCH_MASK		(KVM_REG_LOONGARCH | 0x70000ULL)
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#define KVM_CSR_IDX_MASK		0x7fff
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#define KVM_CPUCFG_IDX_MASK		0x7fff
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/*
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 * KVM_REG_LOONGARCH_KVM - KVM specific control registers.
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 */
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#define KVM_REG_LOONGARCH_COUNTER	(KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 1)
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#define KVM_REG_LOONGARCH_VCPU_RESET	(KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 2)
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/* Debugging: Special instruction for software breakpoint */
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#define KVM_REG_LOONGARCH_DEBUG_INST	(KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 3)
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/* LBT registers */
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#define KVM_REG_LOONGARCH_LBT_SCR0	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 1)
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#define KVM_REG_LOONGARCH_LBT_SCR1	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 2)
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#define KVM_REG_LOONGARCH_LBT_SCR2	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 3)
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#define KVM_REG_LOONGARCH_LBT_SCR3	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 4)
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#define KVM_REG_LOONGARCH_LBT_EFLAGS	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 5)
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#define KVM_REG_LOONGARCH_LBT_FTOP	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 6)
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#define LOONGARCH_REG_SHIFT		3
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#define LOONGARCH_REG_64(TYPE, REG)	(TYPE | KVM_REG_SIZE_U64 | (REG << LOONGARCH_REG_SHIFT))
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#define KVM_IOC_CSRID(REG)		LOONGARCH_REG_64(KVM_REG_LOONGARCH_CSR, REG)
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#define KVM_IOC_CPUCFG(REG)		LOONGARCH_REG_64(KVM_REG_LOONGARCH_CPUCFG, REG)
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/* Device Control API on vm fd */
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#define KVM_LOONGARCH_VM_FEAT_CTRL		0
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#define  KVM_LOONGARCH_VM_FEAT_LSX		0
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#define  KVM_LOONGARCH_VM_FEAT_LASX		1
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#define  KVM_LOONGARCH_VM_FEAT_X86BT		2
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#define  KVM_LOONGARCH_VM_FEAT_ARMBT		3
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#define  KVM_LOONGARCH_VM_FEAT_MIPSBT		4
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#define  KVM_LOONGARCH_VM_FEAT_PMU		5
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#define  KVM_LOONGARCH_VM_FEAT_PV_IPI		6
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#define  KVM_LOONGARCH_VM_FEAT_PV_STEALTIME	7
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#define  KVM_LOONGARCH_VM_FEAT_PTW		8
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/* Device Control API on vcpu fd */
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#define KVM_LOONGARCH_VCPU_CPUCFG	0
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#define KVM_LOONGARCH_VCPU_PVTIME_CTRL	1
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#define  KVM_LOONGARCH_VCPU_PVTIME_GPA	0
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struct kvm_debug_exit_arch {
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};
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/* for KVM_SET_GUEST_DEBUG */
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struct kvm_guest_debug_arch {
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};
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/* definition of registers in kvm_run */
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struct kvm_sync_regs {
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};
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/* dummy definition */
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struct kvm_sregs {
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};
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struct kvm_iocsr_entry {
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	__u32 addr;
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	__u32 pad;
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	__u64 data;
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};
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#define KVM_NR_IRQCHIPS		1
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#define KVM_IRQCHIP_NUM_PINS	64
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#define KVM_MAX_CORES		256
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#define KVM_DEV_LOONGARCH_IPI_GRP_REGS			0x40000001
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#define KVM_DEV_LOONGARCH_EXTIOI_GRP_REGS		0x40000002
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#define KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS		0x40000003
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#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_NUM_CPU	0x0
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#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_FEATURE	0x1
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#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_STATE	0x2
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#define KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL		0x40000004
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#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU	0x0
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#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_FEATURE	0x1
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#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_LOAD_FINISHED	0x3
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#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS	        0x40000005
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#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL	        0x40000006
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#define KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT	        0
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#endif /* __UAPI_ASM_LOONGARCH_KVM_H */
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