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authorJan Kiszka <jan.kiszka@siemens.com>2012-01-23 20:15:11 +0100
committerAnthony Liguori <aliguori@us.ibm.com>2012-02-01 14:45:01 -0600
commit4e4fa398db69e22dcad23114eb7e33b4d89b10c4 (patch)
tree81164d18007857c81ed538a4a610578a40d28829 /hw/qdev.h
parent67ed96f9f25ddd69e23c455d44d389054addf165 (diff)
qdev: Introduce lost tick policy property
Potentially tick-generating timer devices will gain a common property: lock_tick_policy. It allows to encode 4 different ways how to deal with tick events the guest did not process in time: discard - ignore lost ticks (e.g. if the guest compensates for them already) delay - replay all lost ticks in a row once the guest accepts them again merge - if multiple ticks are lost, all of them are merged into one which is replayed once the guest accepts it again slew - lost ticks are gradually replayed at a higher frequency than the original tick Not all timer device will need to support all modes. However, all need to accept the configuration via this common property. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/qdev.h')
-rw-r--r--hw/qdev.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/qdev.h b/hw/qdev.h
index c9572a546c..364e91def7 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -158,6 +158,7 @@ enum PropertyType {
PROP_TYPE_UINT64,
PROP_TYPE_TADDR,
PROP_TYPE_MACADDR,
+ PROP_TYPE_LOSTTICKPOLICY,
PROP_TYPE_DRIVE,
PROP_TYPE_CHR,
PROP_TYPE_STRING,
@@ -307,6 +308,7 @@ extern PropertyInfo qdev_prop_string;
extern PropertyInfo qdev_prop_chr;
extern PropertyInfo qdev_prop_ptr;
extern PropertyInfo qdev_prop_macaddr;
+extern PropertyInfo qdev_prop_losttickpolicy;
extern PropertyInfo qdev_prop_drive;
extern PropertyInfo qdev_prop_netdev;
extern PropertyInfo qdev_prop_vlan;
@@ -367,6 +369,9 @@ extern PropertyInfo qdev_prop_pci_devfn;
DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
#define DEFINE_PROP_MACADDR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
+#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \
+ DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_losttickpolicy, \
+ LostTickPolicy)
#define DEFINE_PROP_END_OF_LIST() \
{}
@@ -389,6 +394,8 @@ void qdev_prop_set_vlan(DeviceState *dev, const char *name, VLANState *value);
int qdev_prop_set_drive(DeviceState *dev, const char *name, BlockDriverState *value) QEMU_WARN_UNUSED_RESULT;
void qdev_prop_set_drive_nofail(DeviceState *dev, const char *name, BlockDriverState *value);
void qdev_prop_set_macaddr(DeviceState *dev, const char *name, uint8_t *value);
+void qdev_prop_set_losttickpolicy(DeviceState *dev, const char *name,
+ LostTickPolicy *value);
/* FIXME: Remove opaque pointer properties. */
void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value);
void qdev_prop_set_defaults(DeviceState *dev, Property *props);