11 *l4( (  fB- {_I|+ /* 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 #include #include #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_FS void drm_suballoc_dump_debug_info(struct drm_suballoc_manager *sa_manager, struct drm_printer *p, unsigned long long suballoc_base); #else static inline void drm_suballoc_dump_debug_info(struct drm_suballoc_manager *sa_manager, struct drm_printer *p, unsigned long long suballoc_base) { } #endif #endif /* _DRM_SUBALLOC_H_ */  967_I|Mdv &K Index of /FSS-OZR/root/sys/dev/char/4:45/subsystem/ttyS0/device/tty

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