/* SPDX-License-Identifier: GPL-2.0 OR MIT *//* * Copyright 2011 Red Hat Inc. * Copyright © 2022 Intel Corporation */#ifndef _DRM_SUBALLOC_H_#define _DRM_SUBALLOC_H_ #include <drm/drm_mm.h> #include <linux/dma-fence.h>#include <linux/types.h> #define DRM_SUBALLOC_MAX_QUEUES 32/** * struct drm_suballoc_manager - fenced range allocations * @wq: Wait queue for sleeping allocations on contention. * @hole: Pointer to first hole node. * @olist: List of allocated ranges. * @flist: Array[fence context hash] of queues of fenced allocated ranges. * @size: Size of the managed range. * @align: Default alignment for the managed range. */struct drm_suballoc_manager {	wait_queue_head_t wq;	struct list_head *hole;	struct list_head olist;	struct list_head flist[DRM_SUBALLOC_MAX_QUEUES];	size_t size;	size_t align;}; /** * struct drm_suballoc - Sub-allocated range * @olist: List link for list of allocated ranges. * @flist: List linkk for the manager fenced allocated ranges queues. * @manager: The drm_suballoc_manager. * @soffset: Start offset. * @eoffset: End offset + 1 so that @eoffset - @soffset = size. * @fence: The fence protecting the allocation. */struct drm_suballoc {	struct list_head olist;	struct list_head flist;	struct drm_suballoc_manager *manager;	size_t soffset;	size_t eoffset;	struct dma_fence *fence;}; void drm_suballoc_manager_init(struct drm_suballoc_manager *sa_manager,			       size_t size, size_t align); void drm_suballoc_manager_fini(struct drm_suballoc_manager *sa_manager); struct drm_suballoc *drm_suballoc_new(struct drm_suballoc_manager *sa_manager, size_t size,		 gfp_t gfp, bool intr, size_t align); void drm_suballoc_free(struct drm_suballoc *sa, struct dma_fence *fence); /** * drm_suballoc_soffset - Range start. * @sa: The struct drm_suballoc. * * Return: The start of the allocated range. */static inline size_t drm_suballoc_soffset(struct drm_suballoc *sa){	return sa->soffset;} /** * drm_suballoc_eoffset - Range end. * @sa: The struct drm_suballoc. * * Return: The end of the allocated range + 1. */static inline size_t drm_suballoc_eoffset(struct drm_suballoc *sa){	return sa->eoffset;} /** * drm_suballoc_size - Range size. * @sa: The struct drm_suballoc. * * Return: The size of the allocated range. */static inline size_t drm_suballoc_size(struct drm_suballoc *sa){	return sa->eoffset - sa->soffset;} #ifdef CONFIG_DEBUG_FSvoid drm_suballoc_dump_debug_info(struct drm_suballoc_manager *sa_manager,				  struct drm_printer *p,				  unsigned long long suballoc_base);#elsestatic inline voiddrm_suballoc_dump_debug_info(struct drm_suballoc_manager *sa_manager,			     struct drm_printer *p,			     unsigned long long suballoc_base){ } #endif #endif /* _DRM_SUBALLOC_H_ */