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/*
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 * Copyright © 2014 Intel Corporation
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a
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 * copy of this software and associated documentation files (the "Software"),
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 * to deal in the Software without restriction, including without limitation
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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 * and/or sell copies of the Software, and to permit persons to whom the
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 * Software is furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice (including the next
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 * paragraph) shall be included in all copies or substantial portions of the
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 * Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 *
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 */
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#ifndef _INTEL_GUC_H_
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#define _INTEL_GUC_H_
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#include "intel_guc_fwif.h"
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#include "i915_guc_reg.h"
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struct i915_guc_client {
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	struct drm_i915_gem_object *client_obj;
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	struct intel_context *owner;
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	struct intel_guc *guc;
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	uint32_t priority;
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	uint32_t ctx_index;
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	uint32_t proc_desc_offset;
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	uint32_t doorbell_offset;
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	uint32_t cookie;
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	uint16_t doorbell_id;
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	uint16_t padding;		/* Maintain alignment		*/
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	uint32_t wq_offset;
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	uint32_t wq_size;
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	spinlock_t wq_lock;		/* Protects all data below	*/
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	uint32_t wq_tail;
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	/* GuC submission statistics & status */
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	uint64_t submissions[I915_NUM_RINGS];
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	uint32_t q_fail;
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	uint32_t b_fail;
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	int retcode;
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};
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enum intel_guc_fw_status {
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	GUC_FIRMWARE_FAIL = -1,
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	GUC_FIRMWARE_NONE = 0,
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	GUC_FIRMWARE_PENDING,
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	GUC_FIRMWARE_SUCCESS
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};
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/*
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 * This structure encapsulates all the data needed during the process
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 * of fetching, caching, and loading the firmware image into the GuC.
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 */
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struct intel_guc_fw {
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	struct drm_device *		guc_dev;
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	const char *			guc_fw_path;
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	size_t				guc_fw_size;
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	struct drm_i915_gem_object *	guc_fw_obj;
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	enum intel_guc_fw_status	guc_fw_fetch_status;
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	enum intel_guc_fw_status	guc_fw_load_status;
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	uint16_t			guc_fw_major_wanted;
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	uint16_t			guc_fw_minor_wanted;
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	uint16_t			guc_fw_major_found;
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	uint16_t			guc_fw_minor_found;
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};
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struct intel_guc {
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	struct intel_guc_fw guc_fw;
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	uint32_t log_flags;
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	struct drm_i915_gem_object *log_obj;
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	struct drm_i915_gem_object *ctx_pool_obj;
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	struct ida ctx_ids;
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	struct i915_guc_client *execbuf_client;
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	spinlock_t host2guc_lock;	/* Protects all data below	*/
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	DECLARE_BITMAP(doorbell_bitmap, GUC_MAX_DOORBELLS);
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	uint32_t db_cacheline;		/* Cyclic counter mod pagesize	*/
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	/* Action status & statistics */
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	uint64_t action_count;		/* Total commands issued	*/
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	uint32_t action_cmd;		/* Last command word		*/
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	uint32_t action_status;		/* Last return status		*/
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	uint32_t action_fail;		/* Total number of failures	*/
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	int32_t action_err;		/* Last error code		*/
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	uint64_t submissions[I915_NUM_RINGS];
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	uint32_t last_seqno[I915_NUM_RINGS];
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};
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/* intel_guc_loader.c */
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extern void intel_guc_ucode_init(struct drm_device *dev);
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extern int intel_guc_ucode_load(struct drm_device *dev);
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extern void intel_guc_ucode_fini(struct drm_device *dev);
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extern const char *intel_guc_fw_status_repr(enum intel_guc_fw_status status);
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extern int intel_guc_suspend(struct drm_device *dev);
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extern int intel_guc_resume(struct drm_device *dev);
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/* i915_guc_submission.c */
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int i915_guc_submission_init(struct drm_device *dev);
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int i915_guc_submission_enable(struct drm_device *dev);
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int i915_guc_submit(struct i915_guc_client *client,
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		    struct drm_i915_gem_request *rq);
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void i915_guc_submission_disable(struct drm_device *dev);
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void i915_guc_submission_fini(struct drm_device *dev);
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#endif