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
  22 static 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 }
  37 static 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
  46 static 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
  52 static 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
  79 static 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
  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 #ifdef CONFIG_KVM
 151     if (kvm_enabled()) {
 152         return kvm_s390_get_ri();
 153     }
 154 #endif
 155     return 0;
 156 }
 157
 158 const 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
 169 const 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 };