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 "sysemu/kvm.h"
  21
  22static 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}
  37static 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
  46static 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
  52static 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
  79static bool vregs_needed(void *opaque)
  80{
  81#ifdef CONFIG_KVM
  82    if (kvm_enabled()) {
  83        return kvm_check_extension(kvm_state, KVM_CAP_S390_VECTOR_REGISTERS);
  84    }
  85#endif
  86    return 0;
  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#ifdef CONFIG_KVM
 151    if (kvm_enabled()) {
 152        return kvm_s390_get_ri();
 153    }
 154#endif
 155    return 0;
 156}
 157
 158const VMStateDescription vmstate_riccb = {
 159    .name = "cpu/riccb",
 160    .version_id = 1,
 161    .minimum_version_id = 1,
 162    .needed = riccb_needed,
 163    .fields = (VMStateField[]) {
 164        VMSTATE_UINT8_ARRAY(env.riccb, S390CPU, 64),
 165        VMSTATE_END_OF_LIST()
 166    }
 167};
 168
 169const VMStateDescription vmstate_s390_cpu = {
 170    .name = "cpu",
 171    .post_load = cpu_post_load,
 172    .pre_save = cpu_pre_save,
 173    .version_id = 4,
 174    .minimum_version_id = 3,
 175    .fields      = (VMStateField[]) {
 176        VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),
 177        VMSTATE_UINT64(env.psw.mask, S390CPU),
 178        VMSTATE_UINT64(env.psw.addr, S390CPU),
 179        VMSTATE_UINT64(env.psa, S390CPU),
 180        VMSTATE_UINT32(env.todpr, S390CPU),
 181        VMSTATE_UINT64(env.pfault_token, S390CPU),
 182        VMSTATE_UINT64(env.pfault_compare, S390CPU),
 183        VMSTATE_UINT64(env.pfault_select, S390CPU),
 184        VMSTATE_UINT64(env.cputm, S390CPU),
 185        VMSTATE_UINT64(env.ckc, S390CPU),
 186        VMSTATE_UINT64(env.gbea, S390CPU),
 187        VMSTATE_UINT64(env.pp, S390CPU),
 188        VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),
 189        VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),
 190        VMSTATE_UINT8(env.cpu_state, S390CPU),
 191        VMSTATE_UINT8(env.sigp_order, S390CPU),
 192        VMSTATE_UINT32_V(irqstate_saved_size, S390CPU, 4),
 193        VMSTATE_VBUFFER_UINT32(irqstate, S390CPU, 4, NULL, 0,
 194                               irqstate_saved_size),
 195        VMSTATE_END_OF_LIST()
 196    },
 197    .subsections = (const VMStateDescription*[]) {
 198        &vmstate_fpu,
 199        &vmstate_vregs,
 200        &vmstate_riccb,
 201        NULL
 202    },
 203};
 204