xref: /openbmc/qemu/target/s390x/machine.c (revision 7f6c3d1a) 
1 /*
2  * S390x machine definitions and functions
3  *
4  * Copyright IBM Corp. 2014, 2018
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 "cpu.h"
19 #include "internal.h"
20 #include "kvm_s390x.h"
21 #include "migration/vmstate.h"
22 #include "tcg_s390x.h"
23 #include "sysemu/kvm.h"
24 #include "sysemu/tcg.h"
25 
26 static int cpu_post_load(void *opaque, int version_id)
27 {
28     S390CPU *cpu = opaque;
29 
30     /*
31      * As the cpu state is pushed to kvm via kvm_set_mp_state rather
32      * than via cpu_synchronize_state, we need update kvm here.
33      */
34     if (kvm_enabled()) {
35         kvm_s390_set_cpu_state(cpu, cpu->env.cpu_state);
36         return kvm_s390_vcpu_interrupt_post_load(cpu);
37     }
38 
39     if (tcg_enabled()) {
40         /* Rearm the CKC timer if necessary */
41         tcg_s390_tod_updated(CPU(cpu), RUN_ON_CPU_NULL);
42     }
43 
44     return 0;
45 }
46 
47 static int cpu_pre_save(void *opaque)
48 {
49     S390CPU *cpu = opaque;
50 
51     if (kvm_enabled()) {
52         kvm_s390_vcpu_interrupt_pre_save(cpu);
53     }
54 
55     return 0;
56 }
57 
58 static inline bool fpu_needed(void *opaque)
59 {
60     /* This looks odd, but we might want to NOT transfer fprs in the future */
61     return true;
62 }
63 
64 static const VMStateDescription vmstate_fpu = {
65     .name = "cpu/fpu",
66     .version_id = 1,
67     .minimum_version_id = 1,
68     .needed = fpu_needed,
69     .fields = (VMStateField[]) {
70         VMSTATE_UINT64(env.vregs[0][0], S390CPU),
71         VMSTATE_UINT64(env.vregs[1][0], S390CPU),
72         VMSTATE_UINT64(env.vregs[2][0], S390CPU),
73         VMSTATE_UINT64(env.vregs[3][0], S390CPU),
74         VMSTATE_UINT64(env.vregs[4][0], S390CPU),
75         VMSTATE_UINT64(env.vregs[5][0], S390CPU),
76         VMSTATE_UINT64(env.vregs[6][0], S390CPU),
77         VMSTATE_UINT64(env.vregs[7][0], S390CPU),
78         VMSTATE_UINT64(env.vregs[8][0], S390CPU),
79         VMSTATE_UINT64(env.vregs[9][0], S390CPU),
80         VMSTATE_UINT64(env.vregs[10][0], S390CPU),
81         VMSTATE_UINT64(env.vregs[11][0], S390CPU),
82         VMSTATE_UINT64(env.vregs[12][0], S390CPU),
83         VMSTATE_UINT64(env.vregs[13][0], S390CPU),
84         VMSTATE_UINT64(env.vregs[14][0], S390CPU),
85         VMSTATE_UINT64(env.vregs[15][0], S390CPU),
86         VMSTATE_UINT32(env.fpc, S390CPU),
87         VMSTATE_END_OF_LIST()
88     }
89 };
90 
91 static bool vregs_needed(void *opaque)
92 {
93     return s390_has_feat(S390_FEAT_VECTOR);
94 }
95 
96 static const VMStateDescription vmstate_vregs = {
97     .name = "cpu/vregs",
98     .version_id = 1,
99     .minimum_version_id = 1,
100     .needed = vregs_needed,
101     .fields = (VMStateField[]) {
102         /* vregs[0][0] -> vregs[15][0] and fregs are overlays */
103         VMSTATE_UINT64(env.vregs[16][0], S390CPU),
104         VMSTATE_UINT64(env.vregs[17][0], S390CPU),
105         VMSTATE_UINT64(env.vregs[18][0], S390CPU),
106         VMSTATE_UINT64(env.vregs[19][0], S390CPU),
107         VMSTATE_UINT64(env.vregs[20][0], S390CPU),
108         VMSTATE_UINT64(env.vregs[21][0], S390CPU),
109         VMSTATE_UINT64(env.vregs[22][0], S390CPU),
110         VMSTATE_UINT64(env.vregs[23][0], S390CPU),
111         VMSTATE_UINT64(env.vregs[24][0], S390CPU),
112         VMSTATE_UINT64(env.vregs[25][0], S390CPU),
113         VMSTATE_UINT64(env.vregs[26][0], S390CPU),
114         VMSTATE_UINT64(env.vregs[27][0], S390CPU),
115         VMSTATE_UINT64(env.vregs[28][0], S390CPU),
116         VMSTATE_UINT64(env.vregs[29][0], S390CPU),
117         VMSTATE_UINT64(env.vregs[30][0], S390CPU),
118         VMSTATE_UINT64(env.vregs[31][0], S390CPU),
119         VMSTATE_UINT64(env.vregs[0][1], S390CPU),
120         VMSTATE_UINT64(env.vregs[1][1], S390CPU),
121         VMSTATE_UINT64(env.vregs[2][1], S390CPU),
122         VMSTATE_UINT64(env.vregs[3][1], S390CPU),
123         VMSTATE_UINT64(env.vregs[4][1], S390CPU),
124         VMSTATE_UINT64(env.vregs[5][1], S390CPU),
125         VMSTATE_UINT64(env.vregs[6][1], S390CPU),
126         VMSTATE_UINT64(env.vregs[7][1], S390CPU),
127         VMSTATE_UINT64(env.vregs[8][1], S390CPU),
128         VMSTATE_UINT64(env.vregs[9][1], S390CPU),
129         VMSTATE_UINT64(env.vregs[10][1], S390CPU),
130         VMSTATE_UINT64(env.vregs[11][1], S390CPU),
131         VMSTATE_UINT64(env.vregs[12][1], S390CPU),
132         VMSTATE_UINT64(env.vregs[13][1], S390CPU),
133         VMSTATE_UINT64(env.vregs[14][1], S390CPU),
134         VMSTATE_UINT64(env.vregs[15][1], S390CPU),
135         VMSTATE_UINT64(env.vregs[16][1], S390CPU),
136         VMSTATE_UINT64(env.vregs[17][1], S390CPU),
137         VMSTATE_UINT64(env.vregs[18][1], S390CPU),
138         VMSTATE_UINT64(env.vregs[19][1], S390CPU),
139         VMSTATE_UINT64(env.vregs[20][1], S390CPU),
140         VMSTATE_UINT64(env.vregs[21][1], S390CPU),
141         VMSTATE_UINT64(env.vregs[22][1], S390CPU),
142         VMSTATE_UINT64(env.vregs[23][1], S390CPU),
143         VMSTATE_UINT64(env.vregs[24][1], S390CPU),
144         VMSTATE_UINT64(env.vregs[25][1], S390CPU),
145         VMSTATE_UINT64(env.vregs[26][1], S390CPU),
146         VMSTATE_UINT64(env.vregs[27][1], S390CPU),
147         VMSTATE_UINT64(env.vregs[28][1], S390CPU),
148         VMSTATE_UINT64(env.vregs[29][1], S390CPU),
149         VMSTATE_UINT64(env.vregs[30][1], S390CPU),
150         VMSTATE_UINT64(env.vregs[31][1], S390CPU),
151         VMSTATE_END_OF_LIST()
152     }
153 };
154 
155 static bool riccb_needed(void *opaque)
156 {
157     return s390_has_feat(S390_FEAT_RUNTIME_INSTRUMENTATION);
158 }
159 
160 const VMStateDescription vmstate_riccb = {
161     .name = "cpu/riccb",
162     .version_id = 1,
163     .minimum_version_id = 1,
164     .needed = riccb_needed,
165     .fields = (VMStateField[]) {
166         VMSTATE_UINT8_ARRAY(env.riccb, S390CPU, 64),
167         VMSTATE_END_OF_LIST()
168     }
169 };
170 
171 static bool exval_needed(void *opaque)
172 {
173     S390CPU *cpu = opaque;
174     return cpu->env.ex_value != 0;
175 }
176 
177 const VMStateDescription vmstate_exval = {
178     .name = "cpu/exval",
179     .version_id = 1,
180     .minimum_version_id = 1,
181     .needed = exval_needed,
182     .fields = (VMStateField[]) {
183         VMSTATE_UINT64(env.ex_value, S390CPU),
184         VMSTATE_END_OF_LIST()
185     }
186 };
187 
188 static bool gscb_needed(void *opaque)
189 {
190     return s390_has_feat(S390_FEAT_GUARDED_STORAGE);
191 }
192 
193 const VMStateDescription vmstate_gscb = {
194     .name = "cpu/gscb",
195     .version_id = 1,
196     .minimum_version_id = 1,
197     .needed = gscb_needed,
198     .fields = (VMStateField[]) {
199         VMSTATE_UINT64_ARRAY(env.gscb, S390CPU, 4),
200         VMSTATE_END_OF_LIST()
201         }
202 };
203 
204 static bool bpbc_needed(void *opaque)
205 {
206     return s390_has_feat(S390_FEAT_BPB);
207 }
208 
209 const VMStateDescription vmstate_bpbc = {
210     .name = "cpu/bpbc",
211     .version_id = 1,
212     .minimum_version_id = 1,
213     .needed = bpbc_needed,
214     .fields = (VMStateField[]) {
215         VMSTATE_BOOL(env.bpbc, S390CPU),
216         VMSTATE_END_OF_LIST()
217     }
218 };
219 
220 static bool etoken_needed(void *opaque)
221 {
222     return s390_has_feat(S390_FEAT_ETOKEN);
223 }
224 
225 const VMStateDescription vmstate_etoken = {
226     .name = "cpu/etoken",
227     .version_id = 1,
228     .minimum_version_id = 1,
229     .needed = etoken_needed,
230     .fields = (VMStateField[]) {
231         VMSTATE_UINT64(env.etoken, S390CPU),
232         VMSTATE_UINT64(env.etoken_extension, S390CPU),
233         VMSTATE_END_OF_LIST()
234     }
235 };
236 
237 const VMStateDescription vmstate_s390_cpu = {
238     .name = "cpu",
239     .post_load = cpu_post_load,
240     .pre_save = cpu_pre_save,
241     .version_id = 4,
242     .minimum_version_id = 3,
243     .fields      = (VMStateField[]) {
244         VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),
245         VMSTATE_UINT64(env.psw.mask, S390CPU),
246         VMSTATE_UINT64(env.psw.addr, S390CPU),
247         VMSTATE_UINT64(env.psa, S390CPU),
248         VMSTATE_UINT32(env.todpr, S390CPU),
249         VMSTATE_UINT64(env.pfault_token, S390CPU),
250         VMSTATE_UINT64(env.pfault_compare, S390CPU),
251         VMSTATE_UINT64(env.pfault_select, S390CPU),
252         VMSTATE_UINT64(env.cputm, S390CPU),
253         VMSTATE_UINT64(env.ckc, S390CPU),
254         VMSTATE_UINT64(env.gbea, S390CPU),
255         VMSTATE_UINT64(env.pp, S390CPU),
256         VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),
257         VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),
258         VMSTATE_UINT8(env.cpu_state, S390CPU),
259         VMSTATE_UINT8(env.sigp_order, S390CPU),
260         VMSTATE_UINT32_V(irqstate_saved_size, S390CPU, 4),
261         VMSTATE_VBUFFER_UINT32(irqstate, S390CPU, 4, NULL,
262                                irqstate_saved_size),
263         VMSTATE_END_OF_LIST()
264     },
265     .subsections = (const VMStateDescription*[]) {
266         &vmstate_fpu,
267         &vmstate_vregs,
268         &vmstate_riccb,
269         &vmstate_exval,
270         &vmstate_gscb,
271         &vmstate_bpbc,
272         &vmstate_etoken,
273         NULL
274     },
275 };
276