drivers/gpu/drm/xe/xe_preempt_fence.h

   1 /* SPDX-License-Identifier: MIT */
   2 /*
   3  * Copyright © 2022 Intel Corporation
   4  */
   5
   6 #ifndef _XE_PREEMPT_FENCE_H_
   7 #define _XE_PREEMPT_FENCE_H_
   8
   9 #include "xe_preempt_fence_types.h"
  10
  11 struct list_head;
  12
  13 struct dma_fence *
  14 xe_preempt_fence_create(struct xe_exec_queue *q,
  15                         u64 context, u32 seqno);
  16
  17 struct xe_preempt_fence *xe_preempt_fence_alloc(void);
  18
  19 void xe_preempt_fence_free(struct xe_preempt_fence *pfence);
  20
  21 struct dma_fence *
  22 xe_preempt_fence_arm(struct xe_preempt_fence *pfence, struct xe_exec_queue *q,
  23                      u64 context, u32 seqno);
  24
  25 static inline struct xe_preempt_fence *
  26 to_preempt_fence(struct dma_fence *fence)
  27 {
  28         return container_of(fence, struct xe_preempt_fence, base);
  29 }
  30
  31 /**
  32  * xe_preempt_fence_link() - Return a link used to keep unarmed preempt
  33  * fences on a list.
  34  * @pfence: Pointer to the preempt fence.
  35  *
  36  * The link is embedded in the struct xe_preempt_fence. Use
  37  * link_to_preempt_fence() to convert back to the preempt fence.
  38  *
  39  * Return: A pointer to an embedded struct list_head.
  40  */
  41 static inline struct list_head *
  42 xe_preempt_fence_link(struct xe_preempt_fence *pfence)
  43 {
  44         return &pfence->link;
  45 }
  46
  47 /**
  48  * to_preempt_fence_from_link() - Convert back to a preempt fence pointer
  49  * from a link obtained with xe_preempt_fence_link().
  50  * @link: The struct list_head obtained from xe_preempt_fence_link().
  51  *
  52  * Return: A pointer to the embedding struct xe_preempt_fence.
  53  */
  54 static inline struct xe_preempt_fence *
  55 to_preempt_fence_from_link(struct list_head *link)
  56 {
  57         return container_of(link, struct xe_preempt_fence, link);
  58 }
  59
  60 bool xe_fence_is_xe_preempt(const struct dma_fence *fence);
  61 #endif