Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 45 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_deps.h b/drivers/gpu/drm/i915/i915_deps.h
new file mode 100644
index 000000000..d76c0106c
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_deps.h
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef _I915_DEPS_H_
+#define _I915_DEPS_H_
+
+#include <linux/types.h>
+
+struct ttm_operation_ctx;
+struct dma_fence;
+struct dma_resv;
+
+/**
+ * struct i915_deps - Collect dependencies into a single dma-fence
+ * @single: Storage for pointer if the collection is a single fence.
+ * @fences: Allocated array of fence pointers if more than a single fence;
+ * otherwise points to the address of @single.
+ * @num_deps: Current number of dependency fences.
+ * @fences_size: Size of the @fences array in number of pointers.
+ * @gfp: Allocation mode.
+ */
+struct i915_deps {
+	struct dma_fence *single;
+	struct dma_fence **fences;
+	unsigned int num_deps;
+	unsigned int fences_size;
+	gfp_t gfp;
+};
+
+void i915_deps_init(struct i915_deps *deps, gfp_t gfp);
+
+void i915_deps_fini(struct i915_deps *deps);
+
+int i915_deps_add_dependency(struct i915_deps *deps,
+			     struct dma_fence *fence,
+			     const struct ttm_operation_ctx *ctx);
+
+int i915_deps_add_resv(struct i915_deps *deps, struct dma_resv *resv,
+		       const struct ttm_operation_ctx *ctx);
+
+int i915_deps_sync(const struct i915_deps *deps,
+		   const struct ttm_operation_ctx *ctx);
+#endif