[PATCH 09/11] drm/syncobj: add transition iotcls between binary and timeline

[Chunming Zhou <david1.zhou-5C7GfCeVMHo@public.gmane.org>]

we need to import/export timeline point

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
---
 drivers/gpu/drm/drm_internal.h |  4 +++
 drivers/gpu/drm/drm_ioctl.c    |  6 ++++
 drivers/gpu/drm/drm_syncobj.c  | 66 ++++++++++++++++++++++++++++++++++
 include/uapi/drm/drm.h         | 10 ++++++
 4 files changed, 86 insertions(+)

diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index dab4d5936441..ecbe3d51a702 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -176,6 +176,10 @@ int drm_syncobj_handle_to_fd_ioctl(struct drm_device *dev, void *data,
 				   struct drm_file *file_private);
 int drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data,
 				   struct drm_file *file_private);
+int drm_syncobj_binary_to_timeline_ioctl(struct drm_device *dev, void *data,
+					 struct drm_file *file_private);
+int drm_syncobj_timeline_to_binary_ioctl(struct drm_device *dev, void *data,
+					 struct drm_file *file_private);
 int drm_syncobj_wait_ioctl(struct drm_device *dev, void *data,
 			   struct drm_file *file_private);
 int drm_syncobj_timeline_wait_ioctl(struct drm_device *dev, void *data,
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 7578ef6dc1d1..6b417e3c3ea5 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -673,6 +673,12 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
 		      DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE, drm_syncobj_fd_to_handle_ioctl,
 		      DRM_UNLOCKED|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_BINARY_TO_TIMELINE,
+		      drm_syncobj_binary_to_timeline_ioctl,
+		      DRM_UNLOCKED|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_TIMELINE_TO_BINARY,
+		      drm_syncobj_timeline_to_binary_ioctl,
+		      DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_WAIT, drm_syncobj_wait_ioctl,
 		      DRM_UNLOCKED|DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT, drm_syncobj_timeline_wait_ioctl,
diff --git a/drivers/gpu/drm/drm_syncobj.c b/drivers/gpu/drm/drm_syncobj.c
index 282982e58dbd..cf4daa670252 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -670,6 +670,72 @@ drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data,
 					&args->handle);
 }
 
+int
+drm_syncobj_binary_to_timeline_ioctl(struct drm_device *dev, void *data,
+				     struct drm_file *file_private)
+{
+	struct drm_syncobj_transfer *args = data;
+	struct drm_syncobj *timeline_syncobj = NULL;
+	struct dma_fence *fence;
+	struct dma_fence_chain *chain;
+	int ret;
+
+	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
+		return -ENODEV;
+
+	if (args->pad)
+		return -EINVAL;
+
+	timeline_syncobj = drm_syncobj_find(file_private, args->timeline_handle);
+	if (!timeline_syncobj) {
+		return -ENOENT;
+	}
+	ret = drm_syncobj_find_fence(file_private, args->binary_handle, 0, 0,
+				     &fence);
+	if (ret)
+		goto err;
+	chain = kzalloc(sizeof(struct dma_fence_chain), GFP_KERNEL);
+	if (!chain)
+		goto err1;
+	drm_syncobj_add_point(timeline_syncobj, chain, fence, args->point);
+err1:
+	dma_fence_put(fence);
+err:
+	drm_syncobj_put(timeline_syncobj);
+
+	return ret;
+}
+
+int
+drm_syncobj_timeline_to_binary_ioctl(struct drm_device *dev, void *data,
+				     struct drm_file *file_private)
+{
+	struct drm_syncobj_transfer *args = data;
+	struct drm_syncobj *binary_syncobj = NULL;
+	struct dma_fence *fence;
+	int ret;
+
+	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
+		return -ENODEV;
+
+	if (args->pad)
+		return -EINVAL;
+
+	binary_syncobj = drm_syncobj_find(file_private, args->binary_handle);
+	if (!binary_syncobj)
+		return -ENOENT;
+	ret = drm_syncobj_find_fence(file_private, args->timeline_handle,
+				     args->point, args->flags, &fence);
+	if (ret)
+		goto err;
+	drm_syncobj_replace_fence(binary_syncobj, fence);
+	dma_fence_put(fence);
+err:
+	drm_syncobj_put(binary_syncobj);
+
+	return ret;
+}
+
 static void syncobj_wait_fence_func(struct dma_fence *fence,
 				    struct dma_fence_cb *cb)
 {
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index b2c36f2b2599..88d6129d4a18 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -735,6 +735,14 @@ struct drm_syncobj_handle {
 	__u32 pad;
 };
 
+struct drm_syncobj_transfer {
+	__u32 binary_handle;
+	__u32 timeline_handle;
+	__u64 point;
+	__u32 flags;
+	__u32 pad;
+};
+
 #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0)
 #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1)
 #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_AVAILABLE (1 << 2)
@@ -933,6 +941,8 @@ extern "C" {
 
 #define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT	DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait)
 #define DRM_IOCTL_SYNCOBJ_QUERY		DRM_IOWR(0xCB, struct drm_syncobj_timeline_array)
+#define DRM_IOCTL_SYNCOBJ_BINARY_TO_TIMELINE	DRM_IOWR(0xCC, struct drm_syncobj_transfer)
+#define DRM_IOCTL_SYNCOBJ_TIMELINE_TO_BINARY	DRM_IOWR(0xCD, struct drm_syncobj_transfer)
 
 /**
  * Device specific ioctls should only be in their respective headers
-- 
2.17.1

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