/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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*
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* (C) COPYRIGHT 2012-2015, 2018, 2020-2022 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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/**
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* DOC: Job Scheduler Context Attribute APIs
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*/
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#ifndef _KBASE_JS_CTX_ATTR_H_
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#define _KBASE_JS_CTX_ATTR_H_
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/**
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* kbasep_js_ctx_attr_runpool_retain_ctx - Retain all attributes of a context
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*
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* @kbdev: KBase device
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* @kctx: KBase context
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*
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* This occurs on scheduling in the context on the runpool (but after
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* is_scheduled is set)
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*
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* Requires:
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* - jsctx mutex
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* - runpool_irq spinlock
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* - ctx->is_scheduled is true
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*/
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void kbasep_js_ctx_attr_runpool_retain_ctx(struct kbase_device *kbdev, struct kbase_context *kctx);
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/**
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* kbasep_js_ctx_attr_runpool_release_ctx - Release all attributes of a context
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*
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* @kbdev: KBase device
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* @kctx: KBase context
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*
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* This occurs on scheduling out the context from the runpool (but before
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* is_scheduled is cleared)
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*
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* Requires:
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* - jsctx mutex
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* - runpool_irq spinlock
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* - ctx->is_scheduled is true
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*
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* Return: true indicates a change in ctx attributes state of the runpool.
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* In this state, the scheduler might be able to submit more jobs than
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* previously, and so the caller should ensure kbasep_js_try_run_next_job_nolock()
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* or similar is called sometime later.
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* false indicates no change in ctx attributes state of the runpool.
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*/
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bool kbasep_js_ctx_attr_runpool_release_ctx(struct kbase_device *kbdev, struct kbase_context *kctx);
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/**
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* kbasep_js_ctx_attr_ctx_retain_atom - Retain all attributes of an atom
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*
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* @kbdev: KBase device
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* @kctx: KBase context
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* @katom: Atom
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*
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* This occurs on adding an atom to a context
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*
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* Requires:
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* - jsctx mutex
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* - If the context is scheduled, then runpool_irq spinlock must also be held
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*/
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void kbasep_js_ctx_attr_ctx_retain_atom(struct kbase_device *kbdev, struct kbase_context *kctx, struct kbase_jd_atom *katom);
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/**
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* kbasep_js_ctx_attr_ctx_release_atom - Release all attributes of an atom,
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* given its retained state.
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*
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* @kbdev: KBase device
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* @kctx: KBase context
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* @katom_retained_state: Retained state
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*
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* This occurs after (permanently) removing an atom from a context
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*
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* Requires:
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* - jsctx mutex
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* - If the context is scheduled, then runpool_irq spinlock must also be held
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*
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* This is a no-op when \a katom_retained_state is invalid.
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*
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* Return: true indicates a change in ctx attributes state of the runpool.
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* In this state, the scheduler might be able to submit more jobs than
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* previously, and so the caller should ensure kbasep_js_try_run_next_job_nolock()
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* or similar is called sometime later.
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* false indicates no change in ctx attributes state of the runpool.
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*/
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bool kbasep_js_ctx_attr_ctx_release_atom(struct kbase_device *kbdev, struct kbase_context *kctx, struct kbasep_js_atom_retained_state *katom_retained_state);
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/*
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* Requires:
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* - runpool_irq spinlock
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*/
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static inline s8 kbasep_js_ctx_attr_count_on_runpool(struct kbase_device *kbdev, enum kbasep_js_ctx_attr attribute)
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{
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struct kbasep_js_device_data *js_devdata;
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KBASE_DEBUG_ASSERT(kbdev != NULL);
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KBASE_DEBUG_ASSERT(attribute < KBASEP_JS_CTX_ATTR_COUNT);
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js_devdata = &kbdev->js_data;
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return js_devdata->runpool_irq.ctx_attr_ref_count[attribute];
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}
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/*
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* Requires:
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* - runpool_irq spinlock
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*/
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static inline bool kbasep_js_ctx_attr_is_attr_on_runpool(struct kbase_device *kbdev, enum kbasep_js_ctx_attr attribute)
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{
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/* In general, attributes are 'on' when they have a non-zero refcount (note: the refcount will never be < 0) */
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return (bool) kbasep_js_ctx_attr_count_on_runpool(kbdev, attribute);
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}
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/*
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* Requires:
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* - jsctx mutex
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*/
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static inline bool kbasep_js_ctx_attr_is_attr_on_ctx(struct kbase_context *kctx, enum kbasep_js_ctx_attr attribute)
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{
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struct kbasep_js_kctx_info *js_kctx_info;
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KBASE_DEBUG_ASSERT(kctx != NULL);
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KBASE_DEBUG_ASSERT(attribute < KBASEP_JS_CTX_ATTR_COUNT);
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js_kctx_info = &kctx->jctx.sched_info;
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/* In general, attributes are 'on' when they have a refcount (which should never be < 0) */
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return (bool) (js_kctx_info->ctx.ctx_attr_ref_count[attribute]);
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}
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#endif /* _KBASE_JS_DEFS_H_ */
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