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/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2022 Intel Corporation
*/
#ifndef _XE_PREEMPT_FENCE_H_
#define _XE_PREEMPT_FENCE_H_
#include "xe_preempt_fence_types.h"
struct list_head;
struct dma_fence *
xe_preempt_fence_create(struct xe_exec_queue *q,
u64 context, u32 seqno);
struct xe_preempt_fence *xe_preempt_fence_alloc(void);
void xe_preempt_fence_free(struct xe_preempt_fence *pfence);
struct dma_fence *
xe_preempt_fence_arm(struct xe_preempt_fence *pfence, struct xe_exec_queue *q,
u64 context, u32 seqno);
static inline struct xe_preempt_fence *
to_preempt_fence(struct dma_fence *fence)
{
return container_of(fence, struct xe_preempt_fence, base);
}
/**
* xe_preempt_fence_link() - Return a link used to keep unarmed preempt
* fences on a list.
* @pfence: Pointer to the preempt fence.
*
* The link is embedded in the struct xe_preempt_fence. Use
* link_to_preempt_fence() to convert back to the preempt fence.
*
* Return: A pointer to an embedded struct list_head.
*/
static inline struct list_head *
xe_preempt_fence_link(struct xe_preempt_fence *pfence)
{
return &pfence->link;
}
/**
* to_preempt_fence_from_link() - Convert back to a preempt fence pointer
* from a link obtained with xe_preempt_fence_link().
* @link: The struct list_head obtained from xe_preempt_fence_link().
*
* Return: A pointer to the embedding struct xe_preempt_fence.
*/
static inline struct xe_preempt_fence *
to_preempt_fence_from_link(struct list_head *link)
{
return container_of(link, struct xe_preempt_fence, link);
}
bool xe_fence_is_xe_preempt(const struct dma_fence *fence);
#endif
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