[PATCH 5/7] drm: add timeline support for syncobj export/import

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

user space can specify timeline point fence to export/import.

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
---
 drivers/gpu/drm/drm_internal.h |  4 ++
 drivers/gpu/drm/drm_ioctl.c    |  4 ++
 drivers/gpu/drm/drm_syncobj.c  | 76 ++++++++++++++++++++++++++++++----
 include/uapi/drm/drm.h         | 11 +++++
 4 files changed, 88 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_internal.h b/drivers/gpu/drm/drm_internal.h
index 9c4826411a3c..5ad6cbdb68ab 100644
--- a/drivers/gpu/drm/drm_internal.h
+++ b/drivers/gpu/drm/drm_internal.h
@@ -181,6 +181,10 @@ 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_handle_to_fd_ioctl2(struct drm_device *dev, void *data,
+				    struct drm_file *file_private);
+int drm_syncobj_fd_to_handle_ioctl2(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 c3c0617e6372..b80c2c28aee0 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -667,6 +667,10 @@ 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_HANDLE_TO_FD2, drm_syncobj_handle_to_fd_ioctl2,
+		      DRM_UNLOCKED|DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE2, drm_syncobj_fd_to_handle_ioctl2,
+		      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 17124d40532f..aed492570d85 100644
--- a/drivers/gpu/drm/drm_syncobj.c
+++ b/drivers/gpu/drm/drm_syncobj.c
@@ -683,7 +683,7 @@ static int drm_syncobj_fd_to_handle(struct drm_file *file_private,
 }
 
 static int drm_syncobj_import_sync_file_fence(struct drm_file *file_private,
-					      int fd, int handle)
+					      int fd, int handle, uint64_t point)
 {
 	struct dma_fence *fence = sync_file_get_fence(fd);
 	struct drm_syncobj *syncobj;
@@ -697,14 +697,14 @@ static int drm_syncobj_import_sync_file_fence(struct drm_file *file_private,
 		return -ENOENT;
 	}
 
-	drm_syncobj_replace_fence(syncobj, 0, fence);
+	drm_syncobj_replace_fence(syncobj, point, fence);
 	dma_fence_put(fence);
 	drm_syncobj_put(syncobj);
 	return 0;
 }
 
 static int drm_syncobj_export_sync_file(struct drm_file *file_private,
-					int handle, int *p_fd)
+					int handle, uint64_t point, int *p_fd)
 {
 	int ret;
 	struct dma_fence *fence;
@@ -714,7 +714,7 @@ static int drm_syncobj_export_sync_file(struct drm_file *file_private,
 	if (fd < 0)
 		return fd;
 
-	ret = drm_syncobj_find_fence(file_private, handle, 0, 0, &fence);
+	ret = drm_syncobj_find_fence(file_private, handle, point, 0, &fence);
 	if (ret)
 		goto err_put_fd;
 
@@ -823,9 +823,14 @@ drm_syncobj_handle_to_fd_ioctl(struct drm_device *dev, void *data,
 	    args->flags != DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE)
 		return -EINVAL;
 
-	if (args->flags & DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE)
+	if (args->flags & DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE) {
+		struct drm_syncobj *syncobj = drm_syncobj_find(file_private,
+							       args->handle);
+		if (!syncobj || syncobj->type != DRM_SYNCOBJ_TYPE_BINARY)
+			return -EINVAL;
 		return drm_syncobj_export_sync_file(file_private, args->handle,
-						    &args->fd);
+						    0, &args->fd);
+	}
 
 	return drm_syncobj_handle_to_fd(file_private, args->handle,
 					&args->fd);
@@ -837,6 +842,61 @@ drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data,
 {
 	struct drm_syncobj_handle *args = data;
 
+	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
+		return -ENODEV;
+
+	if (args->pad)
+		return -EINVAL;
+
+	if (args->flags != 0 &&
+	    args->flags != DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE)
+		return -EINVAL;
+
+	if (args->flags & DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE) {
+		struct drm_syncobj *syncobj = drm_syncobj_find(file_private,
+							       args->handle);
+		if (!syncobj || syncobj->type != DRM_SYNCOBJ_TYPE_BINARY)
+			return -EINVAL;
+		return drm_syncobj_import_sync_file_fence(file_private,
+							  args->fd,
+							  args->handle,
+							  0);
+	}
+
+	return drm_syncobj_fd_to_handle(file_private, args->fd,
+					&args->handle);
+}
+
+int
+drm_syncobj_handle_to_fd_ioctl2(struct drm_device *dev, void *data,
+				   struct drm_file *file_private)
+{
+	struct drm_syncobj_handle2 *args = data;
+
+	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
+		return -ENODEV;
+
+	if (args->pad)
+		return -EINVAL;
+
+	if (args->flags != 0 &&
+	    args->flags != DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE)
+		return -EINVAL;
+
+	if (args->flags & DRM_SYNCOBJ_HANDLE_TO_FD_FLAGS_EXPORT_SYNC_FILE)
+		return drm_syncobj_export_sync_file(file_private, args->handle,
+						    args->point, &args->fd);
+
+	return drm_syncobj_handle_to_fd(file_private, args->handle,
+					&args->fd);
+}
+
+int
+drm_syncobj_fd_to_handle_ioctl2(struct drm_device *dev, void *data,
+				   struct drm_file *file_private)
+{
+	struct drm_syncobj_handle2 *args = data;
+
 	if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
 		return -ENODEV;
 
@@ -850,12 +910,14 @@ drm_syncobj_fd_to_handle_ioctl(struct drm_device *dev, void *data,
 	if (args->flags & DRM_SYNCOBJ_FD_TO_HANDLE_FLAGS_IMPORT_SYNC_FILE)
 		return drm_syncobj_import_sync_file_fence(file_private,
 							  args->fd,
-							  args->handle);
+							  args->handle,
+							  args->point);
 
 	return drm_syncobj_fd_to_handle(file_private, args->fd,
 					&args->handle);
 }
 
+
 struct syncobj_wait_entry {
 	struct task_struct *task;
 	struct dma_fence *fence;
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index 23c4979d8a1c..da5df2a42fc3 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -735,6 +735,15 @@ struct drm_syncobj_handle {
 	__s32 fd;
 	__u32 pad;
 };
+struct drm_syncobj_handle2 {
+	__u32 handle;
+	__u32 flags;
+	__u64 point;
+
+	__s32 fd;
+	__u32 pad;
+};
+
 
 #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_ALL (1 << 0)
 #define DRM_SYNCOBJ_WAIT_FLAGS_WAIT_FOR_SUBMIT (1 << 1)
@@ -938,6 +947,8 @@ 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_query)
+#define DRM_IOCTL_SYNCOBJ_HANDLE_TO_FD2	DRM_IOWR(0xCC, struct drm_syncobj_handle2)
+#define DRM_IOCTL_SYNCOBJ_FD_TO_HANDLE2	DRM_IOWR(0xCD, struct drm_syncobj_handle2)
 
 /**
  * Device specific ioctls should only be in their respective headers
-- 
2.17.1

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