xref: /openbmc/qemu/target/s390x/machine.c (revision c2b38b27) 
1 /*
2  * S390x machine definitions and functions
3  *
4  * Copyright IBM Corp. 2014
5  *
6  * Authors:
7  *   Thomas Huth <thuth@linux.vnet.ibm.com>
8  *   Christian Borntraeger <borntraeger@de.ibm.com>
9  *   Jason J. Herne <jjherne@us.ibm.com>
10  *
11  * This work is free software; you can redistribute it and/or modify
12  * it under the terms of the GNU General Public License as published
13  * by the Free Software Foundation; either version 2 of the License,
14  * or (at your option) any later version.
15  */
16 
17 #include "qemu/osdep.h"
18 #include "hw/hw.h"
19 #include "cpu.h"
20 #include "sysemu/kvm.h"
21 
22 static int cpu_post_load(void *opaque, int version_id)
23 {
24     S390CPU *cpu = opaque;
25 
26     /*
27      * As the cpu state is pushed to kvm via kvm_set_mp_state rather
28      * than via cpu_synchronize_state, we need update kvm here.
29      */
30     if (kvm_enabled()) {
31         kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
32         return kvm_s390_vcpu_interrupt_post_load(cpu);
33     }
34 
35     return 0;
36 }
37 static void cpu_pre_save(void *opaque)
38 {
39     S390CPU *cpu = opaque;
40 
41     if (kvm_enabled()) {
42         kvm_s390_vcpu_interrupt_pre_save(cpu);
43     }
44 }
45 
46 static inline bool fpu_needed(void *opaque)
47 {
48     /* This looks odd, but we might want to NOT transfer fprs in the future */
49     return true;
50 }
51 
52 static const VMStateDescription vmstate_fpu = {
53     .name = "cpu/fpu",
54     .version_id = 1,
55     .minimum_version_id = 1,
56     .needed = fpu_needed,
57     .fields = (VMStateField[]) {
58         VMSTATE_UINT64(env.vregs[0][0].ll, S390CPU),
59         VMSTATE_UINT64(env.vregs[1][0].ll, S390CPU),
60         VMSTATE_UINT64(env.vregs[2][0].ll, S390CPU),
61         VMSTATE_UINT64(env.vregs[3][0].ll, S390CPU),
62         VMSTATE_UINT64(env.vregs[4][0].ll, S390CPU),
63         VMSTATE_UINT64(env.vregs[5][0].ll, S390CPU),
64         VMSTATE_UINT64(env.vregs[6][0].ll, S390CPU),
65         VMSTATE_UINT64(env.vregs[7][0].ll, S390CPU),
66         VMSTATE_UINT64(env.vregs[8][0].ll, S390CPU),
67         VMSTATE_UINT64(env.vregs[9][0].ll, S390CPU),
68         VMSTATE_UINT64(env.vregs[10][0].ll, S390CPU),
69         VMSTATE_UINT64(env.vregs[11][0].ll, S390CPU),
70         VMSTATE_UINT64(env.vregs[12][0].ll, S390CPU),
71         VMSTATE_UINT64(env.vregs[13][0].ll, S390CPU),
72         VMSTATE_UINT64(env.vregs[14][0].ll, S390CPU),
73         VMSTATE_UINT64(env.vregs[15][0].ll, S390CPU),
74         VMSTATE_UINT32(env.fpc, S390CPU),
75         VMSTATE_END_OF_LIST()
76     }
77 };
78 
79 static bool vregs_needed(void *opaque)
80 {
81     return s390_has_feat(S390_FEAT_VECTOR);
82 }
83 
84 static const VMStateDescription vmstate_vregs = {
85     .name = "cpu/vregs",
86     .version_id = 1,
87     .minimum_version_id = 1,
88     .needed = vregs_needed,
89     .fields = (VMStateField[]) {
90         /* vregs[0][0] -> vregs[15][0] and fregs are overlays */
91         VMSTATE_UINT64(env.vregs[16][0].ll, S390CPU),
92         VMSTATE_UINT64(env.vregs[17][0].ll, S390CPU),
93         VMSTATE_UINT64(env.vregs[18][0].ll, S390CPU),
94         VMSTATE_UINT64(env.vregs[19][0].ll, S390CPU),
95         VMSTATE_UINT64(env.vregs[20][0].ll, S390CPU),
96         VMSTATE_UINT64(env.vregs[21][0].ll, S390CPU),
97         VMSTATE_UINT64(env.vregs[22][0].ll, S390CPU),
98         VMSTATE_UINT64(env.vregs[23][0].ll, S390CPU),
99         VMSTATE_UINT64(env.vregs[24][0].ll, S390CPU),
100         VMSTATE_UINT64(env.vregs[25][0].ll, S390CPU),
101         VMSTATE_UINT64(env.vregs[26][0].ll, S390CPU),
102         VMSTATE_UINT64(env.vregs[27][0].ll, S390CPU),
103         VMSTATE_UINT64(env.vregs[28][0].ll, S390CPU),
104         VMSTATE_UINT64(env.vregs[29][0].ll, S390CPU),
105         VMSTATE_UINT64(env.vregs[30][0].ll, S390CPU),
106         VMSTATE_UINT64(env.vregs[31][0].ll, S390CPU),
107         VMSTATE_UINT64(env.vregs[0][1].ll, S390CPU),
108         VMSTATE_UINT64(env.vregs[1][1].ll, S390CPU),
109         VMSTATE_UINT64(env.vregs[2][1].ll, S390CPU),
110         VMSTATE_UINT64(env.vregs[3][1].ll, S390CPU),
111         VMSTATE_UINT64(env.vregs[4][1].ll, S390CPU),
112         VMSTATE_UINT64(env.vregs[5][1].ll, S390CPU),
113         VMSTATE_UINT64(env.vregs[6][1].ll, S390CPU),
114         VMSTATE_UINT64(env.vregs[7][1].ll, S390CPU),
115         VMSTATE_UINT64(env.vregs[8][1].ll, S390CPU),
116         VMSTATE_UINT64(env.vregs[9][1].ll, S390CPU),
117         VMSTATE_UINT64(env.vregs[10][1].ll, S390CPU),
118         VMSTATE_UINT64(env.vregs[11][1].ll, S390CPU),
119         VMSTATE_UINT64(env.vregs[12][1].ll, S390CPU),
120         VMSTATE_UINT64(env.vregs[13][1].ll, S390CPU),
121         VMSTATE_UINT64(env.vregs[14][1].ll, S390CPU),
122         VMSTATE_UINT64(env.vregs[15][1].ll, S390CPU),
123         VMSTATE_UINT64(env.vregs[16][1].ll, S390CPU),
124         VMSTATE_UINT64(env.vregs[17][1].ll, S390CPU),
125         VMSTATE_UINT64(env.vregs[18][1].ll, S390CPU),
126         VMSTATE_UINT64(env.vregs[19][1].ll, S390CPU),
127         VMSTATE_UINT64(env.vregs[20][1].ll, S390CPU),
128         VMSTATE_UINT64(env.vregs[21][1].ll, S390CPU),
129         VMSTATE_UINT64(env.vregs[22][1].ll, S390CPU),
130         VMSTATE_UINT64(env.vregs[23][1].ll, S390CPU),
131         VMSTATE_UINT64(env.vregs[24][1].ll, S390CPU),
132         VMSTATE_UINT64(env.vregs[25][1].ll, S390CPU),
133         VMSTATE_UINT64(env.vregs[26][1].ll, S390CPU),
134         VMSTATE_UINT64(env.vregs[27][1].ll, S390CPU),
135         VMSTATE_UINT64(env.vregs[28][1].ll, S390CPU),
136         VMSTATE_UINT64(env.vregs[29][1].ll, S390CPU),
137         VMSTATE_UINT64(env.vregs[30][1].ll, S390CPU),
138         VMSTATE_UINT64(env.vregs[31][1].ll, S390CPU),
139         VMSTATE_END_OF_LIST()
140     }
141 };
142 
143 static bool riccb_needed(void *opaque)
144 {
145     return s390_has_feat(S390_FEAT_RUNTIME_INSTRUMENTATION);
146 }
147 
148 const VMStateDescription vmstate_riccb = {
149     .name = "cpu/riccb",
150     .version_id = 1,
151     .minimum_version_id = 1,
152     .needed = riccb_needed,
153     .fields = (VMStateField[]) {
154         VMSTATE_UINT8_ARRAY(env.riccb, S390CPU, 64),
155         VMSTATE_END_OF_LIST()
156     }
157 };
158 
159 const VMStateDescription vmstate_s390_cpu = {
160     .name = "cpu",
161     .post_load = cpu_post_load,
162     .pre_save = cpu_pre_save,
163     .version_id = 4,
164     .minimum_version_id = 3,
165     .fields      = (VMStateField[]) {
166         VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),
167         VMSTATE_UINT64(env.psw.mask, S390CPU),
168         VMSTATE_UINT64(env.psw.addr, S390CPU),
169         VMSTATE_UINT64(env.psa, S390CPU),
170         VMSTATE_UINT32(env.todpr, S390CPU),
171         VMSTATE_UINT64(env.pfault_token, S390CPU),
172         VMSTATE_UINT64(env.pfault_compare, S390CPU),
173         VMSTATE_UINT64(env.pfault_select, S390CPU),
174         VMSTATE_UINT64(env.cputm, S390CPU),
175         VMSTATE_UINT64(env.ckc, S390CPU),
176         VMSTATE_UINT64(env.gbea, S390CPU),
177         VMSTATE_UINT64(env.pp, S390CPU),
178         VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),
179         VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),
180         VMSTATE_UINT8(env.cpu_state, S390CPU),
181         VMSTATE_UINT8(env.sigp_order, S390CPU),
182         VMSTATE_UINT32_V(irqstate_saved_size, S390CPU, 4),
183         VMSTATE_VBUFFER_UINT32(irqstate, S390CPU, 4, NULL,
184                                irqstate_saved_size),
185         VMSTATE_END_OF_LIST()
186     },
187     .subsections = (const VMStateDescription*[]) {
188         &vmstate_fpu,
189         &vmstate_vregs,
190         &vmstate_riccb,
191         NULL
192     },
193 };
194