269 lines
6.6 KiB
C
269 lines
6.6 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/bitops.h>
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#include <linux/lockdep.h>
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#include <linux/types.h>
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#include "i915_active.h"
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#include "i915_drv.h"
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#include "intel_context_types.h"
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#include "intel_engine_types.h"
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#include "intel_ring_types.h"
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#include "intel_timeline_types.h"
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#define CE_TRACE(ce, fmt, ...) do { \
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const struct intel_context *ce__ = (ce); \
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ENGINE_TRACE(ce__->engine, "context:%llx " fmt, \
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ce__->timeline->fence_context, \
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##__VA_ARGS__); \
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} while (0)
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struct i915_gem_ww_ctx;
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void intel_context_init(struct intel_context *ce,
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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 intel_engine_cs *engine);
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int intel_context_alloc_state(struct intel_context *ce);
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void intel_context_free(struct intel_context *ce);
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int intel_context_reconfigure_sseu(struct intel_context *ce,
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const struct intel_sseu sseu);
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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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int __intel_context_do_pin_ww(struct intel_context *ce,
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struct i915_gem_ww_ctx *ww);
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static inline bool intel_context_pin_if_active(struct intel_context *ce)
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{
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return atomic_inc_not_zero(&ce->pin_count);
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}
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static inline int intel_context_pin(struct intel_context *ce)
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{
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if (likely(intel_context_pin_if_active(ce)))
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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 int intel_context_pin_ww(struct intel_context *ce,
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struct i915_gem_ww_ctx *ww)
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{
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if (likely(intel_context_pin_if_active(ce)))
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return 0;
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return __intel_context_do_pin_ww(ce, ww);
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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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lockdep_assert_held(&ce->timeline->mutex);
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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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lockdep_assert_held(&ce->timeline->mutex);
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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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lockdep_assert_held(&ce->timeline->mutex);
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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 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 struct intel_timeline *__must_check
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intel_context_timeline_lock(struct intel_context *ce)
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__acquires(&ce->timeline->mutex)
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{
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struct intel_timeline *tl = ce->timeline;
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int err;
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err = mutex_lock_interruptible(&tl->mutex);
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if (err)
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return ERR_PTR(err);
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return tl;
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}
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static inline void intel_context_timeline_unlock(struct intel_timeline *tl)
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__releases(&tl->mutex)
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{
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mutex_unlock(&tl->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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static inline struct intel_ring *__intel_context_ring_size(u64 sz)
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{
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return u64_to_ptr(struct intel_ring, sz);
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}
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static inline bool intel_context_is_barrier(const struct intel_context *ce)
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{
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return test_bit(CONTEXT_BARRIER_BIT, &ce->flags);
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}
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static inline bool intel_context_is_closed(const struct intel_context *ce)
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{
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return test_bit(CONTEXT_CLOSED_BIT, &ce->flags);
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}
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static inline bool intel_context_has_inflight(const struct intel_context *ce)
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{
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return test_bit(COPS_HAS_INFLIGHT_BIT, &ce->ops->flags);
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}
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static inline bool intel_context_use_semaphores(const struct intel_context *ce)
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{
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return test_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
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}
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static inline void intel_context_set_use_semaphores(struct intel_context *ce)
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{
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set_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
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}
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static inline void intel_context_clear_use_semaphores(struct intel_context *ce)
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{
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clear_bit(CONTEXT_USE_SEMAPHORES, &ce->flags);
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}
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static inline bool intel_context_is_banned(const struct intel_context *ce)
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{
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return test_bit(CONTEXT_BANNED, &ce->flags);
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}
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static inline bool intel_context_set_banned(struct intel_context *ce)
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{
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return test_and_set_bit(CONTEXT_BANNED, &ce->flags);
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}
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static inline bool
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intel_context_force_single_submission(const struct intel_context *ce)
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{
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return test_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ce->flags);
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}
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static inline void
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intel_context_set_single_submission(struct intel_context *ce)
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{
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__set_bit(CONTEXT_FORCE_SINGLE_SUBMISSION, &ce->flags);
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}
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static inline bool
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intel_context_nopreempt(const struct intel_context *ce)
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{
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return test_bit(CONTEXT_NOPREEMPT, &ce->flags);
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}
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static inline void
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intel_context_set_nopreempt(struct intel_context *ce)
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{
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set_bit(CONTEXT_NOPREEMPT, &ce->flags);
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}
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static inline void
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intel_context_clear_nopreempt(struct intel_context *ce)
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{
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clear_bit(CONTEXT_NOPREEMPT, &ce->flags);
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}
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static inline u64 intel_context_get_total_runtime_ns(struct intel_context *ce)
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{
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const u32 period = ce->engine->gt->clock_period_ns;
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return READ_ONCE(ce->runtime.total) * period;
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}
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static inline u64 intel_context_get_avg_runtime_ns(struct intel_context *ce)
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{
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const u32 period = ce->engine->gt->clock_period_ns;
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return mul_u32_u32(ewma_runtime_read(&ce->runtime.avg), period);
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}
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#endif /* __INTEL_CONTEXT_H__ */
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