target/s390x/machine.c

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