a95d116098
With GuC virtual engines the physical engine which a request executes
and completes on isn't known to the i915. Therefore we can't attach a
request to a physical engines breadcrumbs. To work around this we create
a single breadcrumbs per engine class when using GuC submission and
direct all physical engine interrupts to this breadcrumbs.
v2:
(John H)
- Rework header file structure so intel_engine_mask_t can be in
intel_engine_types.h
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
CC: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: John Harrison <John.C.Harrison@Intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210727002348.97202-6-matthew.brost@intel.com
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/* 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_BREADCRUMBS__
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#define __INTEL_BREADCRUMBS__
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#include <linux/atomic.h>
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#include <linux/irq_work.h>
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#include "intel_breadcrumbs_types.h"
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struct drm_printer;
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struct i915_request;
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struct intel_breadcrumbs;
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struct intel_breadcrumbs *
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intel_breadcrumbs_create(struct intel_engine_cs *irq_engine);
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void intel_breadcrumbs_free(struct kref *kref);
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void intel_breadcrumbs_reset(struct intel_breadcrumbs *b);
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void __intel_breadcrumbs_park(struct intel_breadcrumbs *b);
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static inline void intel_breadcrumbs_unpark(struct intel_breadcrumbs *b)
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{
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atomic_inc(&b->active);
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}
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static inline void intel_breadcrumbs_park(struct intel_breadcrumbs *b)
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{
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if (atomic_dec_and_test(&b->active))
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__intel_breadcrumbs_park(b);
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}
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static inline void
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intel_engine_signal_breadcrumbs(struct intel_engine_cs *engine)
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{
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irq_work_queue(&engine->breadcrumbs->irq_work);
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}
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void intel_engine_print_breadcrumbs(struct intel_engine_cs *engine,
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struct drm_printer *p);
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bool i915_request_enable_breadcrumb(struct i915_request *request);
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void i915_request_cancel_breadcrumb(struct i915_request *request);
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void intel_context_remove_breadcrumbs(struct intel_context *ce,
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struct intel_breadcrumbs *b);
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static inline struct intel_breadcrumbs *
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intel_breadcrumbs_get(struct intel_breadcrumbs *b)
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{
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kref_get(&b->ref);
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return b;
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}
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static inline void intel_breadcrumbs_put(struct intel_breadcrumbs *b)
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{
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kref_put(&b->ref, intel_breadcrumbs_free);
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}
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#endif /* __INTEL_BREADCRUMBS__ */
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