console: add graphic_console_set_hwops

Add a function to allow display emulations to switch the hwops
function pointers.  This is useful for devices which have two
completely different operation modes.  Typical case is the vga
compatibility mode vs. native mode in qxl and the upcoming
virtio-vga device.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

diff --git a/include/ui/console.h b/include/ui/console.h
index cde0faf6e5b3ba2d34952fc229161ac80d31e937..22ef8ca6b36c8f4d2dd9261efb74ced5f20e5b7a 100644 (file)
--- a/include/ui/console.h
+++ b/include/ui/console.h
@@ -292,6 +292,9 @@ typedef struct GraphicHwOps {
 QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
                                   const GraphicHwOps *ops,
                                   void *opaque);
+void graphic_console_set_hwops(QemuConsole *con,
+                               const GraphicHwOps *hw_ops,
+                               void *opaque);
 
 void graphic_hw_update(QemuConsole *con);
 void graphic_hw_invalidate(QemuConsole *con);

diff --git a/ui/console.c b/ui/console.c
index f819382b247cc71ddea2fef40d7081d058aa8445..258af5dffff37193ff7b55914a10eba4f5f4a83e 100644 (file)
--- a/ui/console.c
+++ b/ui/console.c
@@ -1677,6 +1677,14 @@ DisplayState *init_displaystate(void)
     return display_state;
 }
 
+void graphic_console_set_hwops(QemuConsole *con,
+                               const GraphicHwOps *hw_ops,
+                               void *opaque)
+{
+    con->hw_ops = hw_ops;
+    con->hw = opaque;
+}
+
 QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
                                   const GraphicHwOps *hw_ops,
                                   void *opaque)
@@ -1691,8 +1699,7 @@ QemuConsole *graphic_console_init(DeviceState *dev, uint32_t head,
     ds = get_alloc_displaystate();
     trace_console_gfx_new();
     s = new_console(ds, GRAPHIC_CONSOLE, head);
-    s->hw_ops = hw_ops;
-    s->hw = opaque;
+    graphic_console_set_hwops(s, hw_ops, opaque);
     if (dev) {
         object_property_set_link(OBJECT(s), OBJECT(dev), "device",
                                  &error_abort);