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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115/* 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_alloc(gfp_t gfp);
int drm_suballoc_insert(struct drm_suballoc_manager *sa_manager, struct drm_suballoc *sa, size_t size, bool intr, size_t align);
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_ */