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authorStefan Hajnoczi <stefanha@redhat.com>2014-03-03 11:30:07 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2014-03-13 14:42:24 +0100
commit6e4a876b433f78f72724f45ae3f9e26596da1b4d (patch)
tree9eafebcbf749c6676ada4ae732722ac686739bd0
parent7d1de46448d0d52183c397d76fbc86cb614ed21b (diff)
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iothread: add "iothread" qdev property type
Add a "iothread" qdev property type so devices can be hooked up to an IOThread from the comand-line: qemu -object iothread,id=iothread0 \ -device some-device,x-iothread=iothread0 Note that Paolo Bonzini <pbonzini@redhat.com> has suggested using QOM links instead. This way the relationship between the objects is reflected in QOM. There are currently shortcomings of object_property_add_link() which prevent this use case. I will attempt to fix them and move to QOM links in a separate series. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
-rw-r--r--hw/core/qdev-properties-system.c51
-rw-r--r--include/hw/qdev-properties.h3
2 files changed, 54 insertions, 0 deletions
diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c
index 878c3bc..de83561 100644
--- a/hw/core/qdev-properties-system.c
+++ b/hw/core/qdev-properties-system.c
@@ -18,6 +18,7 @@
#include "net/hub.h"
#include "qapi/visitor.h"
#include "sysemu/char.h"
+#include "sysemu/iothread.h"
static void get_pointer(Object *obj, Visitor *v, Property *prop,
char *(*print)(void *ptr),
@@ -385,6 +386,56 @@ void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
nd->instantiated = 1;
}
+/* --- iothread --- */
+
+static char *print_iothread(void *ptr)
+{
+ return iothread_get_id(ptr);
+}
+
+static int parse_iothread(DeviceState *dev, const char *str, void **ptr)
+{
+ IOThread *iothread;
+
+ iothread = iothread_find(str);
+ if (!iothread) {
+ return -ENOENT;
+ }
+ object_ref(OBJECT(iothread));
+ *ptr = iothread;
+ return 0;
+}
+
+static void get_iothread(Object *obj, struct Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ get_pointer(obj, v, opaque, print_iothread, name, errp);
+}
+
+static void set_iothread(Object *obj, struct Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ set_pointer(obj, v, opaque, parse_iothread, name, errp);
+}
+
+static void release_iothread(Object *obj, const char *name, void *opaque)
+{
+ DeviceState *dev = DEVICE(obj);
+ Property *prop = opaque;
+ IOThread **ptr = qdev_get_prop_ptr(dev, prop);
+
+ if (*ptr) {
+ object_unref(OBJECT(*ptr));
+ }
+}
+
+PropertyInfo qdev_prop_iothread = {
+ .name = "iothread",
+ .get = get_iothread,
+ .set = set_iothread,
+ .release = release_iothread,
+};
+
static int qdev_add_one_global(QemuOpts *opts, void *opaque)
{
GlobalProperty *g;
diff --git a/include/hw/qdev-properties.h b/include/hw/qdev-properties.h
index 0c0babf..3c000ee 100644
--- a/include/hw/qdev-properties.h
+++ b/include/hw/qdev-properties.h
@@ -22,6 +22,7 @@ extern PropertyInfo qdev_prop_bios_chs_trans;
extern PropertyInfo qdev_prop_drive;
extern PropertyInfo qdev_prop_netdev;
extern PropertyInfo qdev_prop_vlan;
+extern PropertyInfo qdev_prop_iothread;
extern PropertyInfo qdev_prop_pci_devfn;
extern PropertyInfo qdev_prop_blocksize;
extern PropertyInfo qdev_prop_pci_host_devaddr;
@@ -142,6 +143,8 @@ extern PropertyInfo qdev_prop_arraylen;
DEFINE_PROP(_n, _s, _f, qdev_prop_vlan, NICPeers)
#define DEFINE_PROP_DRIVE(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_drive, BlockDriverState *)
+#define DEFINE_PROP_IOTHREAD(_n, _s, _f) \
+ DEFINE_PROP(_n, _s, _f, qdev_prop_iothread, IOThread *)
#define DEFINE_PROP_MACADDR(_n, _s, _f) \
DEFINE_PROP(_n, _s, _f, qdev_prop_macaddr, MACAddr)
#define DEFINE_PROP_LOSTTICKPOLICY(_n, _s, _f, _d) \