[Qemu-devel] [PATCH 1/2] console: add graphic_console_set_hwops

[Qemu-devel] [PATCH 1/2] console: add graphic_console_set_hwops

[Gerd Hoffmann]

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>
---
 include/ui/console.h |  3 +++
 ui/console.c         | 11 +++++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/include/ui/console.h b/include/ui/console.h
index cde0faf..22ef8ca 100644
--- 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 f819382..258af5d 100644
--- 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);
-- 
1.8.3.1

[Qemu-devel] [PATCH 2/2] qxl: use graphic_console_set_hwops

[Gerd Hoffmann]

Simply switch function pointers when entering/leaving vga mode.
Allows to remove wrapper functions which do nothing but dispatch
calls depending on the current qxl mode.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/display/qxl.c | 49 +++++++++----------------------------------------
 1 file changed, 9 insertions(+), 40 deletions(-)

diff --git a/hw/display/qxl.c b/hw/display/qxl.c
index 55d13a7..93b3518 100644
--- a/hw/display/qxl.c
+++ b/hw/display/qxl.c
@@ -132,6 +132,8 @@ static void qxl_reset_memslots(PCIQXLDevice *d);
 static void qxl_reset_surfaces(PCIQXLDevice *d);
 static void qxl_ring_set_dirty(PCIQXLDevice *qxl);
 
+static void qxl_hw_update(void *opaque);
+
 void qxl_set_guest_bug(PCIQXLDevice *qxl, const char *msg, ...)
 {
     trace_qxl_set_guest_bug(qxl->id);
@@ -1076,6 +1078,10 @@ static const QXLInterface qxl_interface = {
     .client_monitors_config = interface_client_monitors_config,
 };
 
+static const GraphicHwOps qxl_ops = {
+    .gfx_update  = qxl_hw_update,
+};
+
 static void qxl_enter_vga_mode(PCIQXLDevice *d)
 {
     if (d->mode == QXL_MODE_VGA) {
@@ -1085,6 +1091,7 @@ static void qxl_enter_vga_mode(PCIQXLDevice *d)
 #if SPICE_SERVER_VERSION >= 0x000c03 /* release 0.12.3 */
     spice_qxl_driver_unload(&d->ssd.qxl);
 #endif
+    graphic_console_set_hwops(d->ssd.dcl.con, d->vga.hw_ops, &d->vga);
     qemu_spice_create_host_primary(&d->ssd);
     d->mode = QXL_MODE_VGA;
     vga_dirty_log_start(&d->vga);
@@ -1097,6 +1104,7 @@ static void qxl_exit_vga_mode(PCIQXLDevice *d)
         return;
     }
     trace_qxl_exit_vga_mode(d->id);
+    graphic_console_set_hwops(d->ssd.dcl.con, &qxl_ops, d);
     vga_dirty_log_stop(&d->vga);
     qxl_destroy_primary(d, QXL_SYNC);
 }
@@ -1756,41 +1764,8 @@ static void qxl_send_events(PCIQXLDevice *d, uint32_t events)
 static void qxl_hw_update(void *opaque)
 {
     PCIQXLDevice *qxl = opaque;
-    VGACommonState *vga = &qxl->vga;
 
-    switch (qxl->mode) {
-    case QXL_MODE_VGA:
-        vga->hw_ops->gfx_update(vga);
-        break;
-    case QXL_MODE_COMPAT:
-    case QXL_MODE_NATIVE:
-        qxl_render_update(qxl);
-        break;
-    default:
-        break;
-    }
-}
-
-static void qxl_hw_invalidate(void *opaque)
-{
-    PCIQXLDevice *qxl = opaque;
-    VGACommonState *vga = &qxl->vga;
-
-    if (qxl->mode == QXL_MODE_VGA) {
-        vga->hw_ops->invalidate(vga);
-        return;
-    }
-}
-
-static void qxl_hw_text_update(void *opaque, console_ch_t *chardata)
-{
-    PCIQXLDevice *qxl = opaque;
-    VGACommonState *vga = &qxl->vga;
-
-    if (qxl->mode == QXL_MODE_VGA) {
-        vga->hw_ops->text_update(vga, chardata);
-        return;
-    }
+    qxl_render_update(qxl);
 }
 
 static void qxl_dirty_surfaces(PCIQXLDevice *qxl)
@@ -2049,12 +2024,6 @@ static int qxl_init_common(PCIQXLDevice *qxl)
     return 0;
 }
 
-static const GraphicHwOps qxl_ops = {
-    .invalidate  = qxl_hw_invalidate,
-    .gfx_update  = qxl_hw_update,
-    .text_update = qxl_hw_text_update,
-};
-
 static int qxl_init_primary(PCIDevice *dev)
 {
     PCIQXLDevice *qxl = DO_UPCAST(PCIQXLDevice, pci, dev);
-- 
1.8.3.1