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1/* SPDX-License-Identifier: GPL-2.0 */2/* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */3 4#ifndef __PANFROST_GEM_H__5#define __PANFROST_GEM_H__6 7#include <drm/drm_gem_shmem_helper.h>8#include <drm/drm_mm.h>9 10struct panfrost_mmu;11 12struct panfrost_gem_object {13 struct drm_gem_shmem_object base;14 struct sg_table *sgts;15 16 /*17 * Use a list for now. If searching a mapping ever becomes the18 * bottleneck, we should consider using an RB-tree, or even better,19 * let the core store drm_gem_object_mapping entries (where we20 * could place driver specific data) instead of drm_gem_object ones21 * in its drm_file->object_idr table.22 *23 * struct drm_gem_object_mapping {24 * struct drm_gem_object *obj;25 * void *driver_priv;26 * };27 */28 struct {29 struct list_head list;30 struct mutex lock;31 } mappings;32 33 /*34 * Count the number of jobs referencing this BO so we don't let the35 * shrinker reclaim this object prematurely.36 */37 atomic_t gpu_usecount;38 39 /*40 * Object chunk size currently mapped onto physical memory41 */42 size_t heap_rss_size;43 44 bool noexec :1;45 bool is_heap :1;46};47 48struct panfrost_gem_mapping {49 struct list_head node;50 struct kref refcount;51 struct panfrost_gem_object *obj;52 struct drm_mm_node mmnode;53 struct panfrost_mmu *mmu;54 bool active :1;55};56 57static inline58struct panfrost_gem_object *to_panfrost_bo(struct drm_gem_object *obj)59{60 return container_of(to_drm_gem_shmem_obj(obj), struct panfrost_gem_object, base);61}62 63static inline struct panfrost_gem_mapping *64drm_mm_node_to_panfrost_mapping(struct drm_mm_node *node)65{66 return container_of(node, struct panfrost_gem_mapping, mmnode);67}68 69struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t size);70 71struct drm_gem_object *72panfrost_gem_prime_import_sg_table(struct drm_device *dev,73 struct dma_buf_attachment *attach,74 struct sg_table *sgt);75 76struct panfrost_gem_object *77panfrost_gem_create(struct drm_device *dev, size_t size, u32 flags);78 79int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_priv);80void panfrost_gem_close(struct drm_gem_object *obj,81 struct drm_file *file_priv);82 83struct panfrost_gem_mapping *84panfrost_gem_mapping_get(struct panfrost_gem_object *bo,85 struct panfrost_file_priv *priv);86void panfrost_gem_mapping_put(struct panfrost_gem_mapping *mapping);87void panfrost_gem_teardown_mappings_locked(struct panfrost_gem_object *bo);88 89int panfrost_gem_shrinker_init(struct drm_device *dev);90void panfrost_gem_shrinker_cleanup(struct drm_device *dev);91 92#endif /* __PANFROST_GEM_H__ */93