1 files changed, 101 insertions, 0 deletions
diff --git a/tegra/syncpt.c b/tegra/syncpt.c
new file mode 100644
index 0000000..1601418
--- /dev/null
+++ b/tegra/syncpt.c
@@ -0,0 +1,101 @@
+/*
+ * Copyright © 2021 NVIDIA Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include <errno.h>
+#include <string.h>
+
+#include <sys/ioctl.h>
+
+#include "private.h"
+
+drm_public int
+drm_tegra_syncpoint_new(struct drm_tegra *drm,
+                        struct drm_tegra_syncpoint **syncptp)
+{
+    struct drm_tegra_syncpoint_allocate args;
+    struct drm_tegra_syncpoint *syncpt;
+    int err;
+
+    syncpt = calloc(1, sizeof(*syncpt));
+    if (!syncpt)
+        return -ENOMEM;
+
+    memset(&args, 0, sizeof(args));
+
+    err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_ALLOCATE, &args);
+    if (err < 0) {
+        free(syncpt);
+        return -errno;
+    }
+
+    syncpt->drm = drm;
+    syncpt->id = args.id;
+
+    *syncptp = syncpt;
+
+    return 0;
+}
+
+drm_public int
+drm_tegra_syncpoint_free(struct drm_tegra_syncpoint *syncpt)
+{
+    struct drm_tegra_syncpoint_free args;
+    struct drm_tegra *drm = syncpt->drm;
+    int err;
+
+    if (!syncpt)
+        return -EINVAL;
+
+    memset(&args, 0, sizeof(args));
+    args.id = syncpt->id;
+
+    err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_FREE, &args);
+    if (err < 0)
+        return -errno;
+
+    free(syncpt);
+
+    return 0;
+}
+
+drm_public int
+drm_tegra_fence_wait(struct drm_tegra_fence *fence, unsigned long timeout)
+{
+    struct drm_tegra_syncpoint_wait args;
+    struct drm_tegra *drm = fence->drm;
+    int err;
+
+    memset(&args, 0, sizeof(args));
+    args.timeout_ns = 0;
+    args.id = fence->syncpt;
+    args.threshold = fence->value;
+
+    err = ioctl(drm->fd, DRM_IOCTL_TEGRA_SYNCPOINT_WAIT, &args);
+    if (err < 0)
+        return -errno;
+
+    return 0;
+}