[Qemu-devel] [RfC PATCH 11/15] virtio-vga: add '-vga virtio' support

[Gerd Hoffmann <kraxel@redhat.com>]

Some convinience fluff:  Add support for '-vga virtio', also add
virtio-vga to the list of vga cards so '-device virtio-vga' will
turn off the default vga.

Written by Dave Airlie and Gerd Hoffmann.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/pci/pci.c            |  2 ++
 include/sysemu/sysemu.h |  2 +-
 vl.c                    | 13 +++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index d508930..3a2b8ad 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1662,6 +1662,8 @@ PCIDevice *pci_vga_init(PCIBus *bus)
         return pci_create_simple(bus, -1, "VGA");
     case VGA_VMWARE:
         return pci_create_simple(bus, -1, "vmware-svga");
+    case VGA_VIRTIO:
+        return pci_create_simple(bus, -1, "virtio-vga");
     case VGA_NONE:
     default: /* Other non-PCI types. Checking for unsupported types is already
                 done in vl.c. */
diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 748d059..1c0e2a6 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -107,7 +107,7 @@ extern int autostart;
 
 typedef enum {
     VGA_NONE, VGA_STD, VGA_CIRRUS, VGA_VMWARE, VGA_XENFB, VGA_QXL,
-    VGA_TCX, VGA_CG3, VGA_DEVICE
+    VGA_TCX, VGA_CG3, VGA_DEVICE, VGA_VIRTIO,
 } VGAInterfaceType;
 
 extern int vga_interface_type;
diff --git a/vl.c b/vl.c
index 8c8f142..27fe972 100644
--- a/vl.c
+++ b/vl.c
@@ -234,6 +234,7 @@ static struct {
     { .driver = "isa-cirrus-vga",       .flag = &default_vga       },
     { .driver = "vmware-svga",          .flag = &default_vga       },
     { .driver = "qxl-vga",              .flag = &default_vga       },
+    { .driver = "virtio-vga",           .flag = &default_vga       },
 };
 
 static QemuOptsList qemu_rtc_opts = {
@@ -1870,6 +1871,11 @@ static bool cg3_vga_available(void)
     return object_class_by_name("cgthree");
 }
 
+static bool virtio_vga_available(void)
+{
+    return object_class_by_name("virtio-vga");
+}
+
 static void select_vgahw (const char *p)
 {
     const char *opts;
@@ -1896,6 +1902,13 @@ static void select_vgahw (const char *p)
             fprintf(stderr, "Error: VMWare SVGA not available\n");
             exit(0);
         }
+    } else if (strstart(p, "virtio", &opts)) {
+        if (virtio_vga_available()) {
+            vga_interface_type = VGA_VIRTIO;
+        } else {
+            fprintf(stderr, "Error: Virtio VGA not available\n");
+            exit(0);
+        }
     } else if (strstart(p, "xenfb", &opts)) {
         vga_interface_type = VGA_XENFB;
     } else if (strstart(p, "qxl", &opts)) {
-- 
1.8.3.1