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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 *
4 * Copyright SUSE Linux Products GmbH 2009
5 *
6 * Authors: Alexander Graf <agraf@suse.de>
7 */
8
9#ifndef __ASM_KVM_BOOK3S_ASM_H__
10#define __ASM_KVM_BOOK3S_ASM_H__
11
12/* XICS ICP register offsets */
13#define XICS_XIRR 4
14#define XICS_MFRR 0xc
15#define XICS_IPI 2 /* interrupt source # for IPIs */
16
17/* LPIDs we support with this build -- runtime limit may be lower */
18#define KVMPPC_NR_LPIDS (LPID_RSVD + 1)
19
20/* Maximum number of threads per physical core */
21#define MAX_SMT_THREADS 8
22
23/* Maximum number of subcores per physical core */
24#define MAX_SUBCORES 4
25
26#ifdef __ASSEMBLY__
27
28#ifdef CONFIG_KVM_BOOK3S_HANDLER
29
30#include <asm/kvm_asm.h>
31
32.macro DO_KVM intno
33 .if (\intno == BOOK3S_INTERRUPT_SYSTEM_RESET) || \
34 (\intno == BOOK3S_INTERRUPT_MACHINE_CHECK) || \
35 (\intno == BOOK3S_INTERRUPT_DATA_STORAGE) || \
36 (\intno == BOOK3S_INTERRUPT_INST_STORAGE) || \
37 (\intno == BOOK3S_INTERRUPT_DATA_SEGMENT) || \
38 (\intno == BOOK3S_INTERRUPT_INST_SEGMENT) || \
39 (\intno == BOOK3S_INTERRUPT_EXTERNAL) || \
40 (\intno == BOOK3S_INTERRUPT_EXTERNAL_HV) || \
41 (\intno == BOOK3S_INTERRUPT_ALIGNMENT) || \
42 (\intno == BOOK3S_INTERRUPT_PROGRAM) || \
43 (\intno == BOOK3S_INTERRUPT_FP_UNAVAIL) || \
44 (\intno == BOOK3S_INTERRUPT_DECREMENTER) || \
45 (\intno == BOOK3S_INTERRUPT_SYSCALL) || \
46 (\intno == BOOK3S_INTERRUPT_TRACE) || \
47 (\intno == BOOK3S_INTERRUPT_PERFMON) || \
48 (\intno == BOOK3S_INTERRUPT_ALTIVEC) || \
49 (\intno == BOOK3S_INTERRUPT_VSX)
50
51 b kvmppc_trampoline_\intno
52kvmppc_resume_\intno:
53
54 .endif
55.endm
56
57#else
58
59.macro DO_KVM intno
60.endm
61
62#endif /* CONFIG_KVM_BOOK3S_HANDLER */
63
64#else /*__ASSEMBLY__ */
65
66struct kvmppc_vcore;
67
68/* Struct used for coordinating micro-threading (split-core) mode changes */
69struct kvm_split_mode {
70 unsigned long rpr;
71 unsigned long pmmar;
72 unsigned long ldbar;
73 u8 subcore_size;
74 u8 do_nap;
75 u8 napped[MAX_SMT_THREADS];
76 struct kvmppc_vcore *vc[MAX_SUBCORES];
77};
78
79/*
80 * This struct goes in the PACA on 64-bit processors. It is used
81 * to store host state that needs to be saved when we enter a guest
82 * and restored when we exit, but isn't specific to any particular
83 * guest or vcpu. It also has some scratch fields used by the guest
84 * exit code.
85 */
86struct kvmppc_host_state {
87 ulong host_r1;
88 ulong host_r2;
89 ulong host_msr;
90 ulong vmhandler;
91 ulong scratch0;
92 ulong scratch1;
93 ulong scratch2;
94 u8 in_guest;
95 u8 restore_hid5;
96 u8 napping;
97
98#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
99 u8 hwthread_req;
100 u8 hwthread_state;
101 u8 host_ipi;
102 u8 ptid; /* thread number within subcore when split */
103 u8 fake_suspend;
104 struct kvm_vcpu *kvm_vcpu;
105 struct kvmppc_vcore *kvm_vcore;
106 void __iomem *xics_phys;
107 void __iomem *xive_tima_phys;
108 void __iomem *xive_tima_virt;
109 u32 saved_xirr;
110 u64 dabr;
111 u64 host_mmcr[10]; /* MMCR 0,1,A, SIAR, SDAR, MMCR2, SIER, MMCR3, SIER2/3 */
112 u32 host_pmc[8];
113 u64 host_purr;
114 u64 host_spurr;
115 u64 host_dscr;
116 u64 dec_expires;
117 struct kvm_split_mode *kvm_split_mode;
118#endif
119#ifdef CONFIG_PPC_BOOK3S_64
120 u64 cfar;
121 u64 ppr;
122 u64 host_fscr;
123#endif
124};
125
126struct kvmppc_book3s_shadow_vcpu {
127 bool in_use;
128 ulong gpr[14];
129 u32 cr;
130 ulong xer;
131 ulong ctr;
132 ulong lr;
133 ulong pc;
134
135 ulong shadow_srr1;
136 ulong fault_dar;
137 u32 fault_dsisr;
138 u32 last_inst;
139
140#ifdef CONFIG_PPC_BOOK3S_32
141 u32 sr[16]; /* Guest SRs */
142
143 struct kvmppc_host_state hstate;
144#endif
145
146#ifdef CONFIG_PPC_BOOK3S_64
147 u8 slb_max; /* highest used guest slb entry */
148 struct {
149 u64 esid;
150 u64 vsid;
151 } slb[64]; /* guest SLB */
152 u64 shadow_fscr;
153#endif
154};
155
156#endif /*__ASSEMBLY__ */
157
158/* Values for kvm_state */
159#define KVM_HWTHREAD_IN_KERNEL 0
160#define KVM_HWTHREAD_IN_IDLE 1
161#define KVM_HWTHREAD_IN_KVM 2
162
163#endif /* __ASM_KVM_BOOK3S_ASM_H__ */