diff options
Diffstat (limited to 'drivers/gpu/drm/xe/xe_preempt_fence.h')
-rw-r--r-- | drivers/gpu/drm/xe/xe_preempt_fence.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_preempt_fence.h b/drivers/gpu/drm/xe/xe_preempt_fence.h new file mode 100644 index 0000000000..9406c6fea5 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_preempt_fence.h @@ -0,0 +1,61 @@ +/* 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 |