/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */ #ifndef __PANFROST_GEM_H__ #define __PANFROST_GEM_H__ #include <drm/drm_gem_shmem_helper.h> #include <drm/drm_mm.h> struct panfrost_mmu; struct panfrost_gem_object { struct drm_gem_shmem_object base; struct sg_table *sgts; /* * Use a list for now. If searching a mapping ever becomes the * bottleneck, we should consider using an RB-tree, or even better, * let the core store drm_gem_object_mapping entries (where we * could place driver specific data) instead of drm_gem_object ones * in its drm_file->object_idr table. * * struct drm_gem_object_mapping { * struct drm_gem_object *obj; * void *driver_priv; * }; */ struct { struct list_head list; struct mutex lock; } mappings; /* * Count the number of jobs referencing this BO so we don't let the * shrinker reclaim this object prematurely. */ atomic_t gpu_usecount; bool noexec :1; bool is_heap :1; }; struct panfrost_gem_mapping { struct list_head node; struct kref refcount; struct panfrost_gem_object *obj; struct drm_mm_node mmnode; struct panfrost_mmu *mmu; bool active :1; }; static inline struct panfrost_gem_object *to_panfrost_bo(struct drm_gem_object *obj) { return container_of(to_drm_gem_shmem_obj(obj), struct panfrost_gem_object, base); } static inline struct panfrost_gem_mapping * drm_mm_node_to_panfrost_mapping(struct drm_mm_node *node) { return container_of(node, struct panfrost_gem_mapping, mmnode); } struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t size); struct drm_gem_object * panfrost_gem_prime_import_sg_table(struct drm_device *dev, struct dma_buf_attachment *attach, struct sg_table *sgt); struct panfrost_gem_object * panfrost_gem_create(struct drm_device *dev, size_t size, u32 flags); int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_priv); void panfrost_gem_close(struct drm_gem_object *obj, struct drm_file *file_priv); struct panfrost_gem_mapping * panfrost_gem_mapping_get(struct panfrost_gem_object *bo, struct panfrost_file_priv *priv); void panfrost_gem_mapping_put(struct panfrost_gem_mapping *mapping); void panfrost_gem_teardown_mappings_locked(struct panfrost_gem_object *bo); void panfrost_gem_shrinker_init(struct drm_device *dev); void panfrost_gem_shrinker_cleanup(struct drm_device *dev); #endif /* __PANFROST_GEM_H__ */