disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/drivers/gpu/drm/i915/i915_sw_fence.h
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@@ -1,29 +1,28 @@
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 /*
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+ * SPDX-License-Identifier: MIT
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+ *
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  * i915_sw_fence.h - library routines for N:M synchronisation points
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  *
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  * Copyright (C) 2016 Intel Corporation
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- *
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- * This file is released under the GPLv2.
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- *
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  */
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 #ifndef _I915_SW_FENCE_H_
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 #define _I915_SW_FENCE_H_
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+#include <linux/dma-fence.h>
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 #include <linux/gfp.h>
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 #include <linux/kref.h>
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 #include <linux/notifier.h> /* for NOTIFY_DONE */
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 #include <linux/wait.h>
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 struct completion;
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-struct dma_fence;
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-struct dma_fence_ops;
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-struct reservation_object;
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+struct dma_resv;
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 struct i915_sw_fence {
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 	wait_queue_head_t wait;
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 	unsigned long flags;
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 	atomic_t pending;
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+	int error;
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 };
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 #define I915_SW_FENCE_CHECKED_BIT	0 /* used internally for DAG checking */
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@@ -55,6 +54,8 @@
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 	__i915_sw_fence_init((fence), (fn), NULL, NULL)
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 #endif
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+void i915_sw_fence_reinit(struct i915_sw_fence *fence);
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+
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 #ifdef CONFIG_DRM_I915_SW_FENCE_DEBUG_OBJECTS
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 void i915_sw_fence_fini(struct i915_sw_fence *fence);
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 #else
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@@ -69,16 +70,29 @@
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 int i915_sw_fence_await_sw_fence_gfp(struct i915_sw_fence *fence,
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 				     struct i915_sw_fence *after,
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 				     gfp_t gfp);
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+
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+struct i915_sw_dma_fence_cb {
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+	struct dma_fence_cb base;
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+	struct i915_sw_fence *fence;
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+};
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+
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+int __i915_sw_fence_await_dma_fence(struct i915_sw_fence *fence,
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+				    struct dma_fence *dma,
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+				    struct i915_sw_dma_fence_cb *cb);
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 int i915_sw_fence_await_dma_fence(struct i915_sw_fence *fence,
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 				  struct dma_fence *dma,
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 				  unsigned long timeout,
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 				  gfp_t gfp);
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+
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 int i915_sw_fence_await_reservation(struct i915_sw_fence *fence,
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-				    struct reservation_object *resv,
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+				    struct dma_resv *resv,
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 				    const struct dma_fence_ops *exclude,
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 				    bool write,
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 				    unsigned long timeout,
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 				    gfp_t gfp);
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+
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+bool i915_sw_fence_await(struct i915_sw_fence *fence);
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+void i915_sw_fence_complete(struct i915_sw_fence *fence);
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 static inline bool i915_sw_fence_signaled(const struct i915_sw_fence *fence)
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 {
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@@ -95,4 +109,11 @@
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 	wait_event(fence->wait, i915_sw_fence_done(fence));
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 }
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+static inline void
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+i915_sw_fence_set_error_once(struct i915_sw_fence *fence, int error)
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+{
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+	if (unlikely(error))
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+		cmpxchg(&fence->error, 0, error);
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+}
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+
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 #endif /* _I915_SW_FENCE_H_ */