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
  24 static 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
  40 static 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
  51 static 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
  57 static 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
  84 static bool vregs_needed(void *opaque)
  85 {
  86     return s390_has_feat(S390_FEAT_VECTOR);
  87 }
  88
  89 static 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
 148 static bool riccb_needed(void *opaque)
 149 {
 150     return s390_has_feat(S390_FEAT_RUNTIME_INSTRUMENTATION);
 151 }
 152
 153 const 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
 164 static bool exval_needed(void *opaque)
 165 {
 166     S390CPU *cpu = opaque;
 167     return cpu->env.ex_value != 0;
 168 }
 169
 170 const 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
 181 static bool gscb_needed(void *opaque)
 182 {
 183     return kvm_s390_get_gs();
 184 }
 185
 186 const 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
 197 const VMStateDescription vmstate_s390_cpu = {
 198     .name = "cpu",
 199     .post_load = cpu_post_load,
 200     .pre_save = cpu_pre_save,
 201     .version_id = 4,
 202     .minimum_version_id = 3,
 203     .fields      = (VMStateField[]) {
 204         VMSTATE_UINT64_ARRAY(env.regs, S390CPU, 16),
 205         VMSTATE_UINT64(env.psw.mask, S390CPU),
 206         VMSTATE_UINT64(env.psw.addr, S390CPU),
 207         VMSTATE_UINT64(env.psa, S390CPU),
 208         VMSTATE_UINT32(env.todpr, S390CPU),
 209         VMSTATE_UINT64(env.pfault_token, S390CPU),
 210         VMSTATE_UINT64(env.pfault_compare, S390CPU),
 211         VMSTATE_UINT64(env.pfault_select, S390CPU),
 212         VMSTATE_UINT64(env.cputm, S390CPU),
 213         VMSTATE_UINT64(env.ckc, S390CPU),
 214         VMSTATE_UINT64(env.gbea, S390CPU),
 215         VMSTATE_UINT64(env.pp, S390CPU),
 216         VMSTATE_UINT32_ARRAY(env.aregs, S390CPU, 16),
 217         VMSTATE_UINT64_ARRAY(env.cregs, S390CPU, 16),
 218         VMSTATE_UINT8(env.cpu_state, S390CPU),
 219         VMSTATE_UINT8(env.sigp_order, S390CPU),
 220         VMSTATE_UINT32_V(irqstate_saved_size, S390CPU, 4),
 221         VMSTATE_VBUFFER_UINT32(irqstate, S390CPU, 4, NULL,
 222                                irqstate_saved_size),
 223         VMSTATE_END_OF_LIST()
 224     },
 225     .subsections = (const VMStateDescription*[]) {
 226         &vmstate_fpu,
 227         &vmstate_vregs,
 228         &vmstate_riccb,
 229         &vmstate_exval,
 230         &vmstate_gscb,
 231         NULL
 232     },
 233 };