kvm.h

  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#define __KVM_HAVE_IRQ_LINE
 12
 13/*
 14 * KVM LoongArch specific structures and definitions.
 15 *
 16 * Some parts derived from the x86 version of this file.
 17 */
 18
 19#define KVM_COALESCED_MMIO_PAGE_OFFSET	1
 20#define KVM_DIRTY_LOG_PAGE_OFFSET	64
 21
 22#define KVM_GUESTDBG_USE_SW_BP		0x00010000
 23
 24/*
 25 * for KVM_GET_REGS and KVM_SET_REGS
 26 */
 27struct kvm_regs {
 28	/* out (KVM_GET_REGS) / in (KVM_SET_REGS) */
 29	__u64 gpr[32];
 30	__u64 pc;
 31};
 32
 33/*
 34 * for KVM_GET_FPU and KVM_SET_FPU
 35 */
 36struct kvm_fpu {
 37	__u32 fcsr;
 38	__u64 fcc;    /* 8x8 */
 39	struct kvm_fpureg {
 40		__u64 val64[4];
 41	} fpr[32];
 42};
 43
 44/*
 45 * For LoongArch, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access various
 46 * registers.  The id field is broken down as follows:
 47 *
 48 *  bits[63..52] - As per linux/kvm.h
 49 *  bits[51..32] - Must be zero.
 50 *  bits[31..16] - Register set.
 51 *
 52 * Register set = 0: GP registers from kvm_regs (see definitions below).
 53 *
 54 * Register set = 1: CSR registers.
 55 *
 56 * Register set = 2: KVM specific registers (see definitions below).
 57 *
 58 * Register set = 3: FPU / SIMD registers (see definitions below).
 59 *
 60 * Other sets registers may be added in the future.  Each set would
 61 * have its own identifier in bits[31..16].
 62 */
 63
 64#define KVM_REG_LOONGARCH_GPR		(KVM_REG_LOONGARCH | 0x00000ULL)
 65#define KVM_REG_LOONGARCH_CSR		(KVM_REG_LOONGARCH | 0x10000ULL)
 66#define KVM_REG_LOONGARCH_KVM		(KVM_REG_LOONGARCH | 0x20000ULL)
 67#define KVM_REG_LOONGARCH_FPSIMD	(KVM_REG_LOONGARCH | 0x30000ULL)
 68#define KVM_REG_LOONGARCH_CPUCFG	(KVM_REG_LOONGARCH | 0x40000ULL)
 69#define KVM_REG_LOONGARCH_LBT		(KVM_REG_LOONGARCH | 0x50000ULL)
 70#define KVM_REG_LOONGARCH_MASK		(KVM_REG_LOONGARCH | 0x70000ULL)
 71#define KVM_CSR_IDX_MASK		0x7fff
 72#define KVM_CPUCFG_IDX_MASK		0x7fff
 73
 74/*
 75 * KVM_REG_LOONGARCH_KVM - KVM specific control registers.
 76 */
 77
 78#define KVM_REG_LOONGARCH_COUNTER	(KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 1)
 79#define KVM_REG_LOONGARCH_VCPU_RESET	(KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 2)
 80/* Debugging: Special instruction for software breakpoint */
 81#define KVM_REG_LOONGARCH_DEBUG_INST	(KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 3)
 82
 83/* LBT registers */
 84#define KVM_REG_LOONGARCH_LBT_SCR0	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 1)
 85#define KVM_REG_LOONGARCH_LBT_SCR1	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 2)
 86#define KVM_REG_LOONGARCH_LBT_SCR2	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 3)
 87#define KVM_REG_LOONGARCH_LBT_SCR3	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 4)
 88#define KVM_REG_LOONGARCH_LBT_EFLAGS	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 5)
 89#define KVM_REG_LOONGARCH_LBT_FTOP	(KVM_REG_LOONGARCH_LBT | KVM_REG_SIZE_U64 | 6)
 90
 91#define LOONGARCH_REG_SHIFT		3
 92#define LOONGARCH_REG_64(TYPE, REG)	(TYPE | KVM_REG_SIZE_U64 | (REG << LOONGARCH_REG_SHIFT))
 93#define KVM_IOC_CSRID(REG)		LOONGARCH_REG_64(KVM_REG_LOONGARCH_CSR, REG)
 94#define KVM_IOC_CPUCFG(REG)		LOONGARCH_REG_64(KVM_REG_LOONGARCH_CPUCFG, REG)
 95
 96/* Device Control API on vm fd */
 97#define KVM_LOONGARCH_VM_FEAT_CTRL		0
 98#define  KVM_LOONGARCH_VM_FEAT_LSX		0
 99#define  KVM_LOONGARCH_VM_FEAT_LASX		1
100#define  KVM_LOONGARCH_VM_FEAT_X86BT		2
101#define  KVM_LOONGARCH_VM_FEAT_ARMBT		3
102#define  KVM_LOONGARCH_VM_FEAT_MIPSBT		4
103#define  KVM_LOONGARCH_VM_FEAT_PMU		5
104#define  KVM_LOONGARCH_VM_FEAT_PV_IPI		6
105#define  KVM_LOONGARCH_VM_FEAT_PV_STEALTIME	7
106#define  KVM_LOONGARCH_VM_FEAT_PTW		8
107#define  KVM_LOONGARCH_VM_FEAT_MSGINT		9
108
109/* Device Control API on vcpu fd */
110#define KVM_LOONGARCH_VCPU_CPUCFG	0
111#define KVM_LOONGARCH_VCPU_PVTIME_CTRL	1
112#define  KVM_LOONGARCH_VCPU_PVTIME_GPA	0
113
114struct kvm_debug_exit_arch {
115};
116
117/* for KVM_SET_GUEST_DEBUG */
118struct kvm_guest_debug_arch {
119};
120
121/* definition of registers in kvm_run */
122struct kvm_sync_regs {
123};
124
125/* dummy definition */
126struct kvm_sregs {
127};
128
129struct kvm_iocsr_entry {
130	__u32 addr;
131	__u32 pad;
132	__u64 data;
133};
134
135#define KVM_NR_IRQCHIPS		1
136#define KVM_IRQCHIP_NUM_PINS	64
137#define KVM_MAX_CORES		256
138
139#define KVM_DEV_LOONGARCH_IPI_GRP_REGS			0x40000001
140
141#define KVM_DEV_LOONGARCH_EXTIOI_GRP_REGS		0x40000002
142
143#define KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS		0x40000003
144#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_NUM_CPU	0x0
145#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_FEATURE	0x1
146#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_STATE	0x2
147
148#define KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL		0x40000004
149#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU	0x0
150#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_FEATURE	0x1
151#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_LOAD_FINISHED	0x3
152
153#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS	        0x40000005
154#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL	        0x40000006
155#define KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT	        0
156
157#endif /* __UAPI_ASM_LOONGARCH_KVM_H */