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