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hyperv: qom-ify SynIC

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Make Hyper-V SynIC a device which is attached as a child to a CPU.  For
now it only makes SynIC visibile in the qom hierarchy, and maintains its
internal fields in sync with the respecitve msrs of the parent cpu (the
fields will be used in followup patches).

Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
Message-Id: <20180921082217.29481-3-rkagan@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Roman Kagan 2018-09-21 11:22:09 +03:00 • committed by Paolo Bonzini
parent 729ce7e1b6
commit 606c34bfd5
7 changed files with 164 additions and 2 deletions
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101
hw/hyperv/hyperv.c
View file

@ -9,12 +9,103 @@
#include "qemu/osdep.h"
#include "qemu/main-loop.h"
#include "qapi/error.h"
#include "sysemu/kvm.h"
#include "hw/hyperv/hyperv.h"
typedef struct SynICState {
DeviceState parent_obj;
CPUState *cs;
bool enabled;
hwaddr msg_page_addr;
hwaddr event_page_addr;
} SynICState;
#define TYPE_SYNIC "hyperv-synic"
#define SYNIC(obj) OBJECT_CHECK(SynICState, (obj), TYPE_SYNIC)
static SynICState *get_synic(CPUState *cs)
{
return SYNIC(object_resolve_path_component(OBJECT(cs), "synic"));
}
static void synic_update(SynICState *synic, bool enable,
hwaddr msg_page_addr, hwaddr event_page_addr)
{
synic->enabled = enable;
synic->msg_page_addr = msg_page_addr;
synic->event_page_addr = event_page_addr;
}
void hyperv_synic_update(CPUState *cs, bool enable,
hwaddr msg_page_addr, hwaddr event_page_addr)
{
SynICState *synic = get_synic(cs);
if (!synic) {
return;
}
synic_update(synic, enable, msg_page_addr, event_page_addr);
}
static void synic_realize(DeviceState *dev, Error **errp)
{
}
static void synic_reset(DeviceState *dev)
{
SynICState *synic = SYNIC(dev);
synic_update(synic, false, 0, 0);
}
static void synic_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
dc->realize = synic_realize;
dc->reset = synic_reset;
dc->user_creatable = false;
}
void hyperv_synic_add(CPUState *cs)
{
Object *obj;
SynICState *synic;
obj = object_new(TYPE_SYNIC);
synic = SYNIC(obj);
synic->cs = cs;
object_property_add_child(OBJECT(cs), "synic", obj, &error_abort);
object_unref(obj);
object_property_set_bool(obj, true, "realized", &error_abort);
}
void hyperv_synic_reset(CPUState *cs)
{
device_reset(DEVICE(get_synic(cs)));
}
static const TypeInfo synic_type_info = {
.name = TYPE_SYNIC,
.parent = TYPE_DEVICE,
.instance_size = sizeof(SynICState),
.class_init = synic_class_init,
};
static void synic_register_types(void)
{
type_register_static(&synic_type_info);
}
type_init(synic_register_types)
struct HvSintRoute {
uint32_t sint;
CPUState *cs;
SynICState *synic;
int gsi;
EventNotifier sint_set_notifier;
EventNotifier sint_ack_notifier;
@ -46,12 +137,18 @@ HvSintRoute *hyperv_sint_route_new(uint32_t vp_index, uint32_t sint,
EventNotifier *ack_notifier;
int r, gsi;
CPUState *cs;
SynICState *synic;
cs = hyperv_find_vcpu(vp_index);
if (!cs) {
return NULL;
}
synic = get_synic(cs);
if (!synic) {
return NULL;
}
sint_route = g_new0(HvSintRoute, 1);
r = event_notifier_init(&sint_route->sint_set_notifier, false);
if (r) {
@ -82,7 +179,7 @@ HvSintRoute *hyperv_sint_route_new(uint32_t vp_index, uint32_t sint,
sint_route->gsi = gsi;
sint_route->sint_ack_clb = sint_ack_clb;
sint_route->sint_ack_clb_data = sint_ack_clb_data;
sint_route->cs = cs;
sint_route->synic = synic;
sint_route->sint = sint;
sint_route->refcount = 1;