LXR qemu/target/s390x/machine.c

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