5 files changed, 49 insertions, 12 deletions

diff --git a/hw/display/edid-generate.c b/hw/display/edid-generate.c
index e58472fde5..1665b7cbb2 100644
--- a/hw/display/edid-generate.c
+++ b/hw/display/edid-generate.c
@@ -205,12 +205,8 @@ static void edid_desc_dummy(uint8_t *desc)
 
 static void edid_desc_timing(uint8_t *desc,
                              uint32_t xres, uint32_t yres,
-                             uint32_t dpi)
+                             uint32_t xmm, uint32_t ymm)
 {
-    /* physical display size */
-    uint32_t xmm = xres * dpi / 254;
-    uint32_t ymm = yres * dpi / 254;
-
     /* pull some realistic looking timings out of thin air */
     uint32_t xfront = xres * 25 / 100;
     uint32_t xsync  = xres *  3 / 100;
@@ -290,12 +286,24 @@ static void edid_colorspace(uint8_t *edid,
     edid[34] = white_y >> 2;
 }
 
+static uint32_t qemu_edid_dpi_from_mm(uint32_t mm, uint32_t res)
+{
+    return res * 254 / 10 / mm;
+}
+
+uint32_t qemu_edid_dpi_to_mm(uint32_t dpi, uint32_t res)
+{
+    return res * 254 / 10 / dpi;
+}
+
 void qemu_edid_generate(uint8_t *edid, size_t size,
                         qemu_edid_info *info)
 {
     uint32_t desc = 54;
     uint8_t *xtra3 = NULL;
     uint8_t *dta = NULL;
+    uint32_t width_mm, height_mm;
+    uint32_t dpi = 100; /* if no width_mm/height_mm */
 
     /* =============== set defaults  =============== */
 
@@ -305,15 +313,20 @@ void qemu_edid_generate(uint8_t *edid, size_t size,
     if (!info->name) {
         info->name = "QEMU Monitor";
     }
-    if (!info->dpi) {
-        info->dpi = 100;
-    }
     if (!info->prefx) {
         info->prefx = 1024;
     }
     if (!info->prefy) {
         info->prefy = 768;
     }
+    if (info->width_mm && info->height_mm) {
+        width_mm = info->width_mm;
+        height_mm = info->height_mm;
+        dpi = qemu_edid_dpi_from_mm(width_mm, info->prefx);
+    } else {
+        width_mm = qemu_edid_dpi_to_mm(dpi, info->prefx);
+        height_mm = qemu_edid_dpi_to_mm(dpi, info->prefy);
+    }
 
     /* =============== extensions  =============== */
 
@@ -360,8 +373,8 @@ void qemu_edid_generate(uint8_t *edid, size_t size,
     edid[20] = 0xa5;
 
     /* screen size: undefined */
-    edid[21] = info->prefx * 254 / 100 / info->dpi;
-    edid[22] = info->prefy * 254 / 100 / info->dpi;
+    edid[21] = width_mm / 10;
+    edid[22] = height_mm / 10;
 
     /* display gamma: 2.2 */
     edid[23] = 220 - 100;
@@ -387,7 +400,8 @@ void qemu_edid_generate(uint8_t *edid, size_t size,
 
     /* =============== descriptor blocks =============== */
 
-    edid_desc_timing(edid + desc, info->prefx, info->prefy, info->dpi);
+    edid_desc_timing(edid + desc, info->prefx, info->prefy,
+                     width_mm, height_mm);
     desc += 18;
 
     edid_desc_ranges(edid + desc);
diff --git a/hw/display/virtio-gpu-3d.c b/hw/display/virtio-gpu-3d.c
index 96621576c2..1bd33d7aed 100644
--- a/hw/display/virtio-gpu-3d.c
+++ b/hw/display/virtio-gpu-3d.c
@@ -595,7 +595,7 @@ void virtio_gpu_virgl_reset(VirtIOGPU *g)
 {
     int i;
 
-    /* virgl_renderer_reset() ??? */
+    virgl_renderer_reset();
     for (i = 0; i < g->parent_obj.conf.max_outputs; i++) {
         if (i != 0) {
             dpy_gfx_replace_surface(g->parent_obj.scanout[i].con, NULL);
diff --git a/hw/display/virtio-gpu-base.c b/hw/display/virtio-gpu-base.c
index aeb8723542..40ccd00f94 100644
--- a/hw/display/virtio-gpu-base.c
+++ b/hw/display/virtio-gpu-base.c
@@ -82,6 +82,8 @@ static int virtio_gpu_ui_info(void *opaque, uint32_t idx, QemuUIInfo *info)
     g->req_state[idx].y = info->yoff;
     g->req_state[idx].width = info->width;
     g->req_state[idx].height = info->height;
+    g->req_state[idx].width_mm = info->width_mm;
+    g->req_state[idx].height_mm = info->height_mm;
 
     if (info->width && info->height) {
         g->enabled_output_bitmask |= (1 << idx);
diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c
index 90be4e3ed7..f3b71fa9c7 100644
--- a/hw/display/virtio-gpu.c
+++ b/hw/display/virtio-gpu.c
@@ -212,6 +212,8 @@ virtio_gpu_generate_edid(VirtIOGPU *g, int scanout,
 {
     VirtIOGPUBase *b = VIRTIO_GPU_BASE(g);
     qemu_edid_info info = {
+        .width_mm = b->req_state[scanout].width_mm,
+        .height_mm = b->req_state[scanout].height_mm,
         .prefx = b->req_state[scanout].width,
         .prefy = b->req_state[scanout].height,
     };
diff --git a/hw/display/virtio-vga.c b/hw/display/virtio-vga.c
index f9410a0c2e..81f776ee36 100644
--- a/hw/display/virtio-vga.c
+++ b/hw/display/virtio-vga.c
@@ -168,6 +168,20 @@ static void virtio_vga_base_reset(DeviceState *dev)
     vga_dirty_log_start(&vvga->vga);
 }
 
+static bool virtio_vga_get_big_endian_fb(Object *obj, Error **errp)
+{
+    VirtIOVGABase *d = VIRTIO_VGA_BASE(obj);
+
+    return d->vga.big_endian_fb;
+}
+
+static void virtio_vga_set_big_endian_fb(Object *obj, bool value, Error **errp)
+{
+    VirtIOVGABase *d = VIRTIO_VGA_BASE(obj);
+
+    d->vga.big_endian_fb = value;
+}
+
 static Property virtio_vga_base_properties[] = {
     DEFINE_VIRTIO_GPU_PCI_PROPERTIES(VirtIOPCIProxy),
     DEFINE_PROP_END_OF_LIST(),
@@ -190,6 +204,11 @@ static void virtio_vga_base_class_init(ObjectClass *klass, void *data)
     k->realize = virtio_vga_base_realize;
     pcidev_k->romfile = "vgabios-virtio.bin";
     pcidev_k->class_id = PCI_CLASS_DISPLAY_VGA;
+
+    /* Expose framebuffer byteorder via QOM */
+    object_class_property_add_bool(klass, "big-endian-framebuffer",
+                                   virtio_vga_get_big_endian_fb,
+                                   virtio_vga_set_big_endian_fb);
 }
 
 static TypeInfo virtio_vga_base_info = {