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/*
* Copyright © 2016 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_TIMELINE_H
#define I915_GEM_TIMELINE_H
#include <linux/list.h>
#include "i915_gem_request.h"
struct i915_gem_timeline;
struct intel_timeline {
u64 fence_context;
u32 last_submitted_seqno;
spinlock_t lock;
/**
* List of breadcrumbs associated with GPU requests currently
* outstanding.
*/
struct list_head requests;
/* Contains an RCU guarded pointer to the last request. No reference is
* held to the request, users must carefully acquire a reference to
* the request using i915_gem_active_get_request_rcu(), or hold the
* struct_mutex.
*/
struct i915_gem_active last_request;
u32 sync_seqno[I915_NUM_ENGINES];
struct i915_gem_timeline *common;
};
struct i915_gem_timeline {
struct list_head link;
atomic_t next_seqno;
struct drm_i915_private *i915;
const char *name;
struct intel_timeline engine[I915_NUM_ENGINES];
};
int i915_gem_timeline_init(struct drm_i915_private *i915,
struct i915_gem_timeline *tl,
const char *name);
int i915_gem_timeline_init__global(struct drm_i915_private *i915);
void i915_gem_timeline_fini(struct i915_gem_timeline *tl);
#endif
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