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#define KVM_LOONGARCH_VM_FEAT_PV_PREEMPT 10
109
110/* Device Control API on vcpu fd */
111#define KVM_LOONGARCH_VCPU_CPUCFG 0
112#define KVM_LOONGARCH_VCPU_PVTIME_CTRL 1
113#define KVM_LOONGARCH_VCPU_PVTIME_GPA 0
114
115struct kvm_debug_exit_arch {
116};
117
118/* for KVM_SET_GUEST_DEBUG */
119struct kvm_guest_debug_arch {
120};
121
122/* definition of registers in kvm_run */
123struct kvm_sync_regs {
124};
125
126/* dummy definition */
127struct kvm_sregs {
128};
129
130struct kvm_iocsr_entry {
131 __u32 addr;
132 __u32 pad;
133 __u64 data;
134};
135
136#define KVM_NR_IRQCHIPS 1
137#define KVM_IRQCHIP_NUM_PINS 64
138#define KVM_MAX_CORES 256
139
140#define KVM_DEV_LOONGARCH_IPI_GRP_REGS 0x40000001
141
142#define KVM_DEV_LOONGARCH_EXTIOI_GRP_REGS 0x40000002
143
144#define KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS 0x40000003
145#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_NUM_CPU 0x0
146#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_FEATURE 0x1
147#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_STATE 0x2
148
149#define KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL 0x40000004
150#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU 0x0
151#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_FEATURE 0x1
152#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_LOAD_FINISHED 0x3
153
154#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS 0x40000005
155#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL 0x40000006
156#define KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT 0
157
158#define KVM_DEV_LOONGARCH_DMSINTC_GRP_CTRL 0x40000007
159#define KVM_DEV_LOONGARCH_DMSINTC_MSG_ADDR_BASE 0x0
160#define KVM_DEV_LOONGARCH_DMSINTC_MSG_ADDR_SIZE 0x1
161
162#endif /* __UAPI_ASM_LOONGARCH_KVM_H */