1. 根目录:
2. drivers
3. gpu
4. drm
5. i915
6. i915_gem_render_state.h

/*
 * Copyright © 2014 Intel 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 (including the next
 * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
 */

#ifndef _I915_GEM_RENDER_STATE_H_
#define _I915_GEM_RENDER_STATE_H_

#include <linux/types.h>

struct intel_renderstate_rodata {
	const u32 *reloc;
	const u32 *batch;
	const u32 batch_items;
};

struct render_state {
	const struct intel_renderstate_rodata *rodata;
	struct drm_i915_gem_object *obj;
	u64 ggtt_offset;
	int gen;
};

int i915_gem_render_state_init(struct intel_engine_cs *ring);
void i915_gem_render_state_fini(struct render_state *so);
int i915_gem_render_state_prepare(struct intel_engine_cs *ring,
				  struct render_state *so);

#endif /* _I915_GEM_RENDER_STATE_H_ */