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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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df8cf31e74
Prior to freeing the struct, call the fini function to cleanup the common members. Currently this only calls the debug functions to mark the structs as destroyed, but may be extended to real work in future. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190718070024.21781-2-chris@chris-wilson.co.uk
149 lines
3.7 KiB
C
149 lines
3.7 KiB
C
/*
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* SPDX-License-Identifier: MIT
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*
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* Copyright © 2019 Intel Corporation
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*/
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#ifndef __INTEL_CONTEXT_H__
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#define __INTEL_CONTEXT_H__
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#include <linux/lockdep.h>
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#include "i915_active.h"
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#include "intel_context_types.h"
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#include "intel_engine_types.h"
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void intel_context_init(struct intel_context *ce,
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struct i915_gem_context *ctx,
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struct intel_engine_cs *engine);
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void intel_context_fini(struct intel_context *ce);
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struct intel_context *
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intel_context_create(struct i915_gem_context *ctx,
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struct intel_engine_cs *engine);
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void intel_context_free(struct intel_context *ce);
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/**
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* intel_context_lock_pinned - Stablises the 'pinned' status of the HW context
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* @ce - the context
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*
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* Acquire a lock on the pinned status of the HW context, such that the context
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* can neither be bound to the GPU or unbound whilst the lock is held, i.e.
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* intel_context_is_pinned() remains stable.
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*/
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static inline int intel_context_lock_pinned(struct intel_context *ce)
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__acquires(ce->pin_mutex)
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{
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return mutex_lock_interruptible(&ce->pin_mutex);
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}
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/**
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* intel_context_is_pinned - Reports the 'pinned' status
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* @ce - the context
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*
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* While in use by the GPU, the context, along with its ring and page
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* tables is pinned into memory and the GTT.
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*
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* Returns: true if the context is currently pinned for use by the GPU.
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*/
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static inline bool
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intel_context_is_pinned(struct intel_context *ce)
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{
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return atomic_read(&ce->pin_count);
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}
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/**
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* intel_context_unlock_pinned - Releases the earlier locking of 'pinned' status
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* @ce - the context
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*
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* Releases the lock earlier acquired by intel_context_unlock_pinned().
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*/
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static inline void intel_context_unlock_pinned(struct intel_context *ce)
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__releases(ce->pin_mutex)
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{
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mutex_unlock(&ce->pin_mutex);
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}
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int __intel_context_do_pin(struct intel_context *ce);
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static inline int intel_context_pin(struct intel_context *ce)
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{
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if (likely(atomic_inc_not_zero(&ce->pin_count)))
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return 0;
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return __intel_context_do_pin(ce);
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}
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static inline void __intel_context_pin(struct intel_context *ce)
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{
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GEM_BUG_ON(!intel_context_is_pinned(ce));
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atomic_inc(&ce->pin_count);
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}
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void intel_context_unpin(struct intel_context *ce);
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void intel_context_enter_engine(struct intel_context *ce);
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void intel_context_exit_engine(struct intel_context *ce);
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static inline void intel_context_enter(struct intel_context *ce)
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{
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if (!ce->active_count++)
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ce->ops->enter(ce);
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}
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static inline void intel_context_mark_active(struct intel_context *ce)
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{
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++ce->active_count;
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}
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static inline void intel_context_exit(struct intel_context *ce)
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{
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GEM_BUG_ON(!ce->active_count);
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if (!--ce->active_count)
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ce->ops->exit(ce);
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}
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static inline int intel_context_active_acquire(struct intel_context *ce)
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{
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return i915_active_acquire(&ce->active);
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}
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static inline void intel_context_active_release(struct intel_context *ce)
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{
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/* Nodes preallocated in intel_context_active() */
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i915_active_acquire_barrier(&ce->active);
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i915_active_release(&ce->active);
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}
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static inline struct intel_context *intel_context_get(struct intel_context *ce)
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{
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kref_get(&ce->ref);
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return ce;
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}
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static inline void intel_context_put(struct intel_context *ce)
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{
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kref_put(&ce->ref, ce->ops->destroy);
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}
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static inline int __must_check
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intel_context_timeline_lock(struct intel_context *ce)
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__acquires(&ce->ring->timeline->mutex)
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{
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return mutex_lock_interruptible(&ce->ring->timeline->mutex);
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}
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static inline void intel_context_timeline_unlock(struct intel_context *ce)
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__releases(&ce->ring->timeline->mutex)
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{
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mutex_unlock(&ce->ring->timeline->mutex);
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}
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int intel_context_prepare_remote_request(struct intel_context *ce,
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struct i915_request *rq);
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struct i915_request *intel_context_create_request(struct intel_context *ce);
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#endif /* __INTEL_CONTEXT_H__ */
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