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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 */
27 struct 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 */
36 struct 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
115 struct kvm_debug_exit_arch {
116 };
117
118 /* for KVM_SET_GUEST_DEBUG */
119 struct kvm_guest_debug_arch {
120 };
121
122 /* definition of registers in kvm_run */
123 struct kvm_sync_regs {
124 };
125
126 /* dummy definition */
127 struct kvm_sregs {
128 };
129
130 struct 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 */