/* CPUClass:reset() */
static void s390_cpu_full_reset(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
int i;
scc->parent_reset(s);
cpu->env.sigp_order = 0;
s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
memset(env, 0, offsetof(CPUS390XState, end_reset_fields));
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
/* architectured initial value for Breaking-Event-Address register */
env->gbea = 1;
env->pfault_token = -1UL;
env->ext_index = -1;
for (i = 0; i < ARRAY_SIZE(env->io_index); i++) {
env->io_index[i] = -1;
}
/* tininess for underflow is detected before rounding */
set_float_detect_tininess(float_tininess_before_rounding,
&env->fpu_status);
/* Reset state inside the kernel that we cannot access yet from QEMU. */
if (kvm_enabled()) {
kvm_s390_reset_vcpu(cpu);
}
}
/* CPUClass:reset() */
static void s390_cpu_full_reset(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
s390_del_running_cpu(cpu);
scc->parent_reset(s);
memset(env, 0, offsetof(CPUS390XState, cpu_num));
/* architectured initial values for CR 0 and 14 */
env->cregs[0] = CR0_RESET;
env->cregs[14] = CR14_RESET;
env->pfault_token = -1UL;
/* set halted to 1 to make sure we can add the cpu in
* s390_ipl_cpu code, where CPUState::halted is set back to 0
* after incrementing the cpu counter */
#if !defined(CONFIG_USER_ONLY)
s->halted = 1;
if (kvm_enabled()) {
kvm_s390_reset_vcpu(cpu);
}
#endif
tlb_flush(s, 1);
}
static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
{
S390CPU *cpu = S390_CPU(dev);
S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
cpu_reset(CPU(cpu));
scc->parent_realize(dev, errp);
}
static void cpu_reset_all(void)
{
CPUState *cs;
S390CPUClass *scc;
CPU_FOREACH(cs) {
scc = S390_CPU_GET_CLASS(cs);
scc->cpu_reset(cs);
}
}
/* S390CPUClass::cpu_reset() */
static void s390_cpu_reset(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
env->pfault_token = -1UL;
scc->parent_reset(s);
cpu->env.sigp_order = 0;
s390_cpu_set_state(CPU_STATE_STOPPED, cpu);
}
static int modified_clear_reset(S390CPU *cpu)
{
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
pause_all_vcpus();
cpu_synchronize_all_states();
cpu_full_reset_all();
io_subsystem_reset();
scc->load_normal(CPU(cpu));
cpu_synchronize_all_post_reset();
resume_all_vcpus();
return 0;
}
/* S390CPUClass::cpu_reset() */
static void s390_cpu_reset(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
env->pfault_token = -1UL;
s390_del_running_cpu(cpu);
scc->parent_reset(s);
#if !defined(CONFIG_USER_ONLY)
s->halted = 1;
#endif
tlb_flush(s, 1);
}
static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
s390_cpu_gdb_init(cs);
qemu_init_vcpu(cs);
#if !defined(CONFIG_USER_ONLY)
run_on_cpu(cs, s390_do_cpu_full_reset, cs);
#else
cpu_reset(cs);
#endif
scc->parent_realize(dev, errp);
}
static int modified_clear_reset(S390CPU *cpu)
{
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUState *t;
pause_all_vcpus();
cpu_synchronize_all_states();
CPU_FOREACH(t) {
run_on_cpu(t, s390_do_cpu_full_reset, t);
}
cmma_reset(cpu);
subsystem_reset();
scc->load_normal(CPU(cpu));
cpu_synchronize_all_post_reset();
resume_all_vcpus();
return 0;
}
/* CPUClass::reset() */
static void s390_cpu_reset(CPUState *s)
{
S390CPU *cpu = S390_CPU(s);
S390CPUClass *scc = S390_CPU_GET_CLASS(cpu);
CPUS390XState *env = &cpu->env;
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
log_cpu_state(env, 0);
}
scc->parent_reset(s);
memset(env, 0, offsetof(CPUS390XState, breakpoints));
/* FIXME: reset vector? */
tlb_flush(env, 1);
s390_add_running_cpu(env);
}
static void s390_cpu_model_initfn(Object *obj)
{
S390CPU *cpu = S390_CPU(obj);
S390CPUClass *xcc = S390_CPU_GET_CLASS(cpu);
cpu->model = g_malloc0(sizeof(*cpu->model));
/* copy the model, so we can modify it */
cpu->model->def = xcc->cpu_def;
if (xcc->is_static) {
/* base model - features will never change */
bitmap_copy(cpu->model->features, cpu->model->def->base_feat,
S390_FEAT_MAX);
} else {
/* latest model - features can change */
bitmap_copy(cpu->model->features,
cpu->model->def->default_feat, S390_FEAT_MAX);
}
}
void s390_realize_cpu_model(CPUState *cs, Error **errp)
{
S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
S390CPU *cpu = S390_CPU(cs);
const S390CPUModel *max_model;
if (xcc->kvm_required && !kvm_enabled()) {
error_setg(errp, "CPU definition requires KVM");
return;
}
if (!cpu->model) {
/* no host model support -> perform compatibility stuff */
apply_cpu_model(NULL, errp);
return;
}
max_model = get_max_cpu_model(errp);
if (*errp) {
error_prepend(errp, "CPU models are not available: ");
return;
}
/* copy over properties that can vary */
cpu->model->lowest_ibc = max_model->lowest_ibc;
cpu->model->cpu_id = max_model->cpu_id;
cpu->model->cpu_id_format = max_model->cpu_id_format;
cpu->model->cpu_ver = max_model->cpu_ver;
check_consistency(cpu->model);
check_compatibility(max_model, cpu->model, errp);
if (*errp) {
return;
}
apply_cpu_model(cpu->model, errp);
cpu->env.cpuid = s390_cpuid_from_cpu_model(cpu->model);
if (tcg_enabled()) {
/* basic mode, write the cpu address into the first 4 bit of the ID */
cpu->env.cpuid = deposit64(cpu->env.cpuid, 54, 4, cpu->env.cpu_num);
}
}
void s390_realize_cpu_model(CPUState *cs, Error **errp)
{
S390CPUClass *xcc = S390_CPU_GET_CLASS(cs);
S390CPU *cpu = S390_CPU(cs);
const S390CPUModel *max_model;
if (xcc->kvm_required && !kvm_enabled()) {
error_setg(errp, "CPU definition requires KVM");
return;
}
if (!cpu->model) {
/* no host model support -> perform compatibility stuff */
apply_cpu_model(NULL, errp);
return;
}
max_model = get_max_cpu_model(errp);
if (*errp) {
error_prepend(errp, "CPU models are not available: ");
return;
}
/* copy over properties that can vary */
cpu->model->lowest_ibc = max_model->lowest_ibc;
cpu->model->cpu_id = max_model->cpu_id;
cpu->model->cpu_ver = max_model->cpu_ver;
check_consistency(cpu->model);
check_compatibility(max_model, cpu->model, errp);
if (*errp) {
return;
}
apply_cpu_model(cpu->model, errp);
}
static void s390_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
S390CPUClass *scc = S390_CPU_GET_CLASS(dev);
S390CPU *cpu = S390_CPU(dev);
CPUS390XState *env = &cpu->env;
Error *err = NULL;
/* the model has to be realized before qemu_init_vcpu() due to kvm */
s390_realize_cpu_model(cs, &err);
if (err) {
goto out;
}
#if !defined(CONFIG_USER_ONLY)
if (cpu->id >= max_cpus) {
error_setg(&err, "Unable to add CPU: %" PRIi64
", max allowed: %d", cpu->id, max_cpus - 1);
goto out;
}
#endif
if (cpu_exists(cpu->id)) {
error_setg(&err, "Unable to add CPU: %" PRIi64
", it already exists", cpu->id);
goto out;
}
if (cpu->id != scc->next_cpu_id) {
error_setg(&err, "Unable to add CPU: %" PRIi64
", The next available id is %" PRIi64, cpu->id,
scc->next_cpu_id);
goto out;
}
cpu_exec_realizefn(cs, &err);
if (err != NULL) {
goto out;
}
scc->next_cpu_id++;
#if !defined(CONFIG_USER_ONLY)
qemu_register_reset(s390_cpu_machine_reset_cb, cpu);
#endif
env->cpu_num = cpu->id;
s390_cpu_gdb_init(cs);
qemu_init_vcpu(cs);
#if !defined(CONFIG_USER_ONLY)
run_on_cpu(cs, s390_do_cpu_full_reset, RUN_ON_CPU_NULL);
#else
cpu_reset(cs);
#endif
scc->parent_realize(dev, &err);
#if !defined(CONFIG_USER_ONLY)
if (dev->hotplugged) {
raise_irq_cpu_hotplug();
}
#endif
out:
error_propagate(errp, err);
}
static bool get_is_migration_safe(Object *obj, Error **errp)
{
return S390_CPU_GET_CLASS(obj)->is_migration_safe;
}
static bool get_is_static(Object *obj, Error **errp)
{
return S390_CPU_GET_CLASS(obj)->is_static;
}
static char *get_description(Object *obj, Error **errp)
{
return g_strdup(S390_CPU_GET_CLASS(obj)->desc);
}
