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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2015-2022 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
#if !defined(_KBASE_TIMELINE_H)
#define _KBASE_TIMELINE_H
#include <mali_kbase.h>
/*****************************************************************************/
struct kbase_timeline;
/**
* kbase_timeline_init - initialize timeline infrastructure in kernel
* @timeline: Newly created instance of kbase_timeline will be stored in
* this pointer.
* @timeline_flags: Timeline status will be written to this variable when a
* client is attached/detached. The variable must be valid
* while timeline instance is valid.
* Return: zero on success, negative number on error
*/
int kbase_timeline_init(struct kbase_timeline **timeline,
atomic_t *timeline_flags);
/**
* kbase_timeline_term - terminate timeline infrastructure in kernel
*
* @timeline: Timeline instance to be terminated. It must be previously created
* with kbase_timeline_init().
*/
void kbase_timeline_term(struct kbase_timeline *timeline);
/**
* kbase_timeline_io_acquire - acquire timeline stream file descriptor
* @kbdev: Kbase device
* @flags: Timeline stream flags
*
* This descriptor is meant to be used by userspace timeline to gain access to
* kernel timeline stream. This stream is later broadcasted by user space to the
* timeline client.
* Only one entity can own the descriptor at any given time. Descriptor shall be
* closed if unused. If descriptor cannot be obtained (i.e. when it is already
* being used) return will be a negative value.
*
* Return: file descriptor on success, negative number on error
*/
int kbase_timeline_io_acquire(struct kbase_device *kbdev, u32 flags);
/**
* kbase_timeline_streams_flush - flush timeline streams.
* @timeline: Timeline instance
*
* Function will flush pending data in all timeline streams.
*
* Return: Zero on success, errno on failure.
*/
int kbase_timeline_streams_flush(struct kbase_timeline *timeline);
/**
* kbase_timeline_streams_body_reset - reset timeline body streams.
* @timeline: Timeline instance
*
* Function will discard pending data in all timeline body streams.
*/
void kbase_timeline_streams_body_reset(struct kbase_timeline *timeline);
/**
* kbase_timeline_post_kbase_context_create - Inform timeline that a new KBase
* Context has been created.
* @kctx: KBase Context
*/
void kbase_timeline_post_kbase_context_create(struct kbase_context *kctx);
/**
* kbase_timeline_pre_kbase_context_destroy - Inform timeline that a KBase
* Context is about to be destroyed.
* @kctx: KBase Context
*/
void kbase_timeline_pre_kbase_context_destroy(struct kbase_context *kctx);
/**
* kbase_timeline_post_kbase_context_destroy - Inform timeline that a KBase
* Context has been destroyed.
* @kctx: KBase Context
*
* Should be called immediately before the memory is freed, and the context ID
* and kbdev pointer should still be valid.
*/
void kbase_timeline_post_kbase_context_destroy(struct kbase_context *kctx);
#if MALI_UNIT_TEST
/**
* kbase_timeline_stats - read timeline stream statistics
* @timeline: Timeline instance
* @bytes_collected: Will hold number of bytes read by the user
* @bytes_generated: Will hold number of bytes generated by trace points
*/
void kbase_timeline_stats(struct kbase_timeline *timeline, u32 *bytes_collected, u32 *bytes_generated);
#endif /* MALI_UNIT_TEST */
#endif /* _KBASE_TIMELINE_H */
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