[PATCH 1/5] drm/virtio: print a single line with device features

[PATCH 1/5] drm/virtio: print a single line with device features

[Gerd Hoffmann]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_kms.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c
index 0b3cdb0d83b0..2f5773e43557 100644
--- a/drivers/gpu/drm/virtio/virtgpu_kms.c
+++ b/drivers/gpu/drm/virtio/virtgpu_kms.c
@@ -155,16 +155,15 @@ int virtio_gpu_init(struct drm_device *dev)
 #ifdef __LITTLE_ENDIAN
 	if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_VIRGL))
 		vgdev->has_virgl_3d = true;
-	DRM_INFO("virgl 3d acceleration %s\n",
-		 vgdev->has_virgl_3d ? "enabled" : "not supported by host");
-#else
-	DRM_INFO("virgl 3d acceleration not supported by guest\n");
 #endif
 	if (virtio_has_feature(vgdev->vdev, VIRTIO_GPU_F_EDID)) {
 		vgdev->has_edid = true;
-		DRM_INFO("EDID support available.\n");
 	}
 
+	DRM_INFO("features: %cvirgl %cedid\n",
+		 vgdev->has_virgl_3d ? '+' : '-',
+		 vgdev->has_edid     ? '+' : '-');
+
 	ret = virtio_find_vqs(vgdev->vdev, 2, vqs, callbacks, names, NULL);
 	if (ret) {
 		DRM_ERROR("failed to find virt queues\n");
-- 
2.18.1

[PATCH 2/5] drm/virtio: move byteorder handling into virtio_gpu_cmd_transfer_to_host_2d function

[Gerd Hoffmann]

Be consistent with the rest of the code base.
No functional change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_drv.h   |  4 ++--
 drivers/gpu/drm/virtio/virtgpu_plane.c | 12 ++++++------
 drivers/gpu/drm/virtio/virtgpu_vq.c    | 12 ++++++------
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index 314e02f94d9c..0b56ba005e25 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -267,8 +267,8 @@ void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
 				   uint32_t resource_id);
 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 					uint64_t offset,
-					__le32 width, __le32 height,
-					__le32 x, __le32 y,
+					uint32_t width, uint32_t height,
+					uint32_t x, uint32_t y,
 					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence);
 void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index f4b7360282ce..390524143139 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -132,10 +132,10 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
 			virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
 			virtio_gpu_cmd_transfer_to_host_2d
 				(vgdev, 0,
-				 cpu_to_le32(plane->state->src_w >> 16),
-				 cpu_to_le32(plane->state->src_h >> 16),
-				 cpu_to_le32(plane->state->src_x >> 16),
-				 cpu_to_le32(plane->state->src_y >> 16),
+				 plane->state->src_w >> 16,
+				 plane->state->src_h >> 16,
+				 plane->state->src_x >> 16,
+				 plane->state->src_y >> 16,
 				 objs, NULL);
 		}
 	} else {
@@ -234,8 +234,8 @@ static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,
 		virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
 		virtio_gpu_cmd_transfer_to_host_2d
 			(vgdev, 0,
-			 cpu_to_le32(plane->state->crtc_w),
-			 cpu_to_le32(plane->state->crtc_h),
+			 plane->state->crtc_w,
+			 plane->state->crtc_h,
 			 0, 0, objs, vgfb->fence);
 		dma_fence_wait(&vgfb->fence->f, true);
 		dma_fence_put(&vgfb->fence->f);
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 80176f379ad5..74ad3bc3ebe8 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -549,8 +549,8 @@ void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
 
 void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 					uint64_t offset,
-					__le32 width, __le32 height,
-					__le32 x, __le32 y,
+					uint32_t width, uint32_t height,
+					uint32_t x, uint32_t y,
 					struct virtio_gpu_object_array *objs,
 					struct virtio_gpu_fence *fence)
 {
@@ -571,10 +571,10 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
 	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D);
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
 	cmd_p->offset = cpu_to_le64(offset);
-	cmd_p->r.width = width;
-	cmd_p->r.height = height;
-	cmd_p->r.x = x;
-	cmd_p->r.y = y;
+	cmd_p->r.width = cpu_to_le32(width);
+	cmd_p->r.height = cpu_to_le32(height);
+	cmd_p->r.x = cpu_to_le32(x);
+	cmd_p->r.y = cpu_to_le32(y);
 
 	virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, &cmd_p->hdr, fence);
 }
-- 
2.18.1

[PATCH 3/5] drm/virtio: fix byteorder handling in virtio_gpu_cmd_transfer_{from,to}_host_3d functions

[Gerd Hoffmann]

Be consistent with the rest of the code base.
No functional change.

In theory this change is incompatible on bigendian machines,
but in practice 3d acceleration is supported only on little
endian machines, so the affected code paths never run on
bigendian machines.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_vq.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 74ad3bc3ebe8..0bf60914ece2 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -987,7 +987,12 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
 	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
 	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
-	cmd_p->box = *box;
+	cmd_p->box.x = cpu_to_le32(box->x);
+	cmd_p->box.y = cpu_to_le32(box->y);
+	cmd_p->box.z = cpu_to_le32(box->z);
+	cmd_p->box.w = cpu_to_le32(box->w);
+	cmd_p->box.h = cpu_to_le32(box->h);
+	cmd_p->box.d = cpu_to_le32(box->d);
 	cmd_p->offset = cpu_to_le64(offset);
 	cmd_p->level = cpu_to_le32(level);
 
@@ -1013,7 +1018,12 @@ void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
 	cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_FROM_HOST_3D);
 	cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
 	cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
-	cmd_p->box = *box;
+	cmd_p->box.x = cpu_to_le32(box->x);
+	cmd_p->box.y = cpu_to_le32(box->y);
+	cmd_p->box.z = cpu_to_le32(box->z);
+	cmd_p->box.w = cpu_to_le32(box->w);
+	cmd_p->box.h = cpu_to_le32(box->h);
+	cmd_p->box.d = cpu_to_le32(box->d);
 	cmd_p->offset = cpu_to_le64(offset);
 	cmd_p->level = cpu_to_le32(level);
 
-- 
2.18.1

[PATCH 4/5] drm/virtio: Simplify virtio_gpu_primary_plane_update workflow.

[Gerd Hoffmann]

Return early for the no framebuffer (or disabled output) case.
Results in a simpler code flow for the remaining cases.
No functional change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_plane.c | 62 ++++++++++++++------------
 1 file changed, 33 insertions(+), 29 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 390524143139..0b5a760bc293 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -110,7 +110,6 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
 	struct virtio_gpu_output *output = NULL;
 	struct virtio_gpu_framebuffer *vgfb;
 	struct virtio_gpu_object *bo;
-	uint32_t handle;
 
 	if (plane->state->crtc)
 		output = drm_crtc_to_virtio_gpu_output(plane->state->crtc);
@@ -119,47 +118,52 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
 	if (WARN_ON(!output))
 		return;
 
-	if (plane->state->fb && output->enabled) {
-		vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
-		bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
-		handle = bo->hw_res_handle;
-		if (bo->dumb) {
-			struct virtio_gpu_object_array *objs;
+	if (!plane->state->fb || !output->enabled) {
+		DRM_DEBUG("nofb\n");
+		virtio_gpu_cmd_set_scanout(vgdev, output->index, 0,
+					   plane->state->src_w >> 16,
+					   plane->state->src_h >> 16,
+					   0, 0);
+		return;
+	}
+
+	vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
+	bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
+	if (bo->dumb) {
+		struct virtio_gpu_object_array *objs;
 
-			objs = virtio_gpu_array_alloc(1);
-			if (!objs)
-				return;
-			virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
-			virtio_gpu_cmd_transfer_to_host_2d
-				(vgdev, 0,
-				 plane->state->src_w >> 16,
-				 plane->state->src_h >> 16,
-				 plane->state->src_x >> 16,
-				 plane->state->src_y >> 16,
-				 objs, NULL);
-		}
-	} else {
-		handle = 0;
+		objs = virtio_gpu_array_alloc(1);
+		if (!objs)
+			return;
+		virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
+		virtio_gpu_cmd_transfer_to_host_2d
+			(vgdev, 0,
+			 plane->state->src_w >> 16,
+			 plane->state->src_h >> 16,
+			 plane->state->src_x >> 16,
+			 plane->state->src_y >> 16,
+			 objs, NULL);
 	}
 
-	DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n", handle,
+	DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
+		  bo->hw_res_handle,
 		  plane->state->crtc_w, plane->state->crtc_h,
 		  plane->state->crtc_x, plane->state->crtc_y,
 		  plane->state->src_w >> 16,
 		  plane->state->src_h >> 16,
 		  plane->state->src_x >> 16,
 		  plane->state->src_y >> 16);
-	virtio_gpu_cmd_set_scanout(vgdev, output->index, handle,
+	virtio_gpu_cmd_set_scanout(vgdev, output->index,
+				   bo->hw_res_handle,
 				   plane->state->src_w >> 16,
 				   plane->state->src_h >> 16,
 				   plane->state->src_x >> 16,
 				   plane->state->src_y >> 16);
-	if (handle)
-		virtio_gpu_cmd_resource_flush(vgdev, handle,
-					      plane->state->src_x >> 16,
-					      plane->state->src_y >> 16,
-					      plane->state->src_w >> 16,
-					      plane->state->src_h >> 16);
+	virtio_gpu_cmd_resource_flush(vgdev, bo->hw_res_handle,
+				      plane->state->src_x >> 16,
+				      plane->state->src_y >> 16,
+				      plane->state->src_w >> 16,
+				      plane->state->src_h >> 16);
 }
 
 static int virtio_gpu_cursor_prepare_fb(struct drm_plane *plane,
-- 
2.18.1

[PATCH 5/5] drm/virtio: factor out virtio_gpu_update_dumb_bo

[Gerd Hoffmann]

No functional change.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 drivers/gpu/drm/virtio/virtgpu_plane.c | 36 +++++++++++++++-----------
 1 file changed, 21 insertions(+), 15 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 0b5a760bc293..bc4bc4475a8c 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -102,6 +102,25 @@ static int virtio_gpu_plane_atomic_check(struct drm_plane *plane,
 	return ret;
 }
 
+static void virtio_gpu_update_dumb_bo(struct virtio_gpu_device *vgdev,
+				      struct virtio_gpu_object *bo,
+				      struct drm_plane_state *state)
+{
+	struct virtio_gpu_object_array *objs;
+
+	objs = virtio_gpu_array_alloc(1);
+	if (!objs)
+		return;
+	virtio_gpu_array_add_obj(objs, &bo->base.base);
+	virtio_gpu_cmd_transfer_to_host_2d
+		(vgdev, 0,
+		 state->src_w >> 16,
+		 state->src_h >> 16,
+		 state->src_x >> 16,
+		 state->src_y >> 16,
+		 objs, NULL);
+}
+
 static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
 					    struct drm_plane_state *old_state)
 {
@@ -129,21 +148,8 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
 
 	vgfb = to_virtio_gpu_framebuffer(plane->state->fb);
 	bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
-	if (bo->dumb) {
-		struct virtio_gpu_object_array *objs;
-
-		objs = virtio_gpu_array_alloc(1);
-		if (!objs)
-			return;
-		virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
-		virtio_gpu_cmd_transfer_to_host_2d
-			(vgdev, 0,
-			 plane->state->src_w >> 16,
-			 plane->state->src_h >> 16,
-			 plane->state->src_x >> 16,
-			 plane->state->src_y >> 16,
-			 objs, NULL);
-	}
+	if (bo->dumb)
+		virtio_gpu_update_dumb_bo(vgdev, bo, plane->state);
 
 	DRM_DEBUG("handle 0x%x, crtc %dx%d+%d+%d, src %dx%d+%d+%d\n",
 		  bo->hw_res_handle,
-- 
2.18.1