1f3ba9122SRob Herring /* SPDX-License-Identifier: GPL-2.0 */
2f3ba9122SRob Herring /* Copyright 2019 Linaro, Ltd, Rob Herring <robh@kernel.org> */
3f3ba9122SRob Herring
4f3ba9122SRob Herring #ifndef __PANFROST_GEM_H__
5f3ba9122SRob Herring #define __PANFROST_GEM_H__
6f3ba9122SRob Herring
7f3ba9122SRob Herring #include <drm/drm_gem_shmem_helper.h>
8f3ba9122SRob Herring #include <drm/drm_mm.h>
9f3ba9122SRob Herring
107282f764SRob Herring struct panfrost_mmu;
117282f764SRob Herring
12f3ba9122SRob Herring struct panfrost_gem_object {
13f3ba9122SRob Herring struct drm_gem_shmem_object base;
14187d2929SRob Herring struct sg_table *sgts;
15f3ba9122SRob Herring
16bdefca2dSBoris Brezillon /*
17bdefca2dSBoris Brezillon * Use a list for now. If searching a mapping ever becomes the
18bdefca2dSBoris Brezillon * bottleneck, we should consider using an RB-tree, or even better,
19bdefca2dSBoris Brezillon * let the core store drm_gem_object_mapping entries (where we
20bdefca2dSBoris Brezillon * could place driver specific data) instead of drm_gem_object ones
21bdefca2dSBoris Brezillon * in its drm_file->object_idr table.
22bdefca2dSBoris Brezillon *
23bdefca2dSBoris Brezillon * struct drm_gem_object_mapping {
24bdefca2dSBoris Brezillon * struct drm_gem_object *obj;
25bdefca2dSBoris Brezillon * void *driver_priv;
26bdefca2dSBoris Brezillon * };
27bdefca2dSBoris Brezillon */
28bdefca2dSBoris Brezillon struct {
29bdefca2dSBoris Brezillon struct list_head list;
30bdefca2dSBoris Brezillon struct mutex lock;
31bdefca2dSBoris Brezillon } mappings;
32bdefca2dSBoris Brezillon
337e0cf7e9SBoris Brezillon /*
347e0cf7e9SBoris Brezillon * Count the number of jobs referencing this BO so we don't let the
357e0cf7e9SBoris Brezillon * shrinker reclaim this object prematurely.
367e0cf7e9SBoris Brezillon */
377e0cf7e9SBoris Brezillon atomic_t gpu_usecount;
387e0cf7e9SBoris Brezillon
39203270c0SRob Herring bool noexec :1;
40187d2929SRob Herring bool is_heap :1;
41f3ba9122SRob Herring };
42f3ba9122SRob Herring
43bdefca2dSBoris Brezillon struct panfrost_gem_mapping {
44bdefca2dSBoris Brezillon struct list_head node;
45bdefca2dSBoris Brezillon struct kref refcount;
46bdefca2dSBoris Brezillon struct panfrost_gem_object *obj;
47bdefca2dSBoris Brezillon struct drm_mm_node mmnode;
48bdefca2dSBoris Brezillon struct panfrost_mmu *mmu;
49bdefca2dSBoris Brezillon bool active :1;
50bdefca2dSBoris Brezillon };
51bdefca2dSBoris Brezillon
52f3ba9122SRob Herring static inline
to_panfrost_bo(struct drm_gem_object * obj)53f3ba9122SRob Herring struct panfrost_gem_object *to_panfrost_bo(struct drm_gem_object *obj)
54f3ba9122SRob Herring {
55f3ba9122SRob Herring return container_of(to_drm_gem_shmem_obj(obj), struct panfrost_gem_object, base);
56f3ba9122SRob Herring }
57f3ba9122SRob Herring
58bdefca2dSBoris Brezillon static inline struct panfrost_gem_mapping *
drm_mm_node_to_panfrost_mapping(struct drm_mm_node * node)59bdefca2dSBoris Brezillon drm_mm_node_to_panfrost_mapping(struct drm_mm_node *node)
60187d2929SRob Herring {
61bdefca2dSBoris Brezillon return container_of(node, struct panfrost_gem_mapping, mmnode);
62187d2929SRob Herring }
63187d2929SRob Herring
64f3ba9122SRob Herring struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t size);
65f3ba9122SRob Herring
66f3ba9122SRob Herring struct drm_gem_object *
67f3ba9122SRob Herring panfrost_gem_prime_import_sg_table(struct drm_device *dev,
68f3ba9122SRob Herring struct dma_buf_attachment *attach,
69f3ba9122SRob Herring struct sg_table *sgt);
70f3ba9122SRob Herring
71203270c0SRob Herring struct panfrost_gem_object *
72*4217c6acSSteven Price panfrost_gem_create(struct drm_device *dev, size_t size, u32 flags);
73203270c0SRob Herring
740a523998SBoris Brezillon int panfrost_gem_open(struct drm_gem_object *obj, struct drm_file *file_priv);
750a523998SBoris Brezillon void panfrost_gem_close(struct drm_gem_object *obj,
760a523998SBoris Brezillon struct drm_file *file_priv);
770a523998SBoris Brezillon
78bdefca2dSBoris Brezillon struct panfrost_gem_mapping *
79bdefca2dSBoris Brezillon panfrost_gem_mapping_get(struct panfrost_gem_object *bo,
80bdefca2dSBoris Brezillon struct panfrost_file_priv *priv);
81bdefca2dSBoris Brezillon void panfrost_gem_mapping_put(struct panfrost_gem_mapping *mapping);
827d2d6d01SBoris Brezillon void panfrost_gem_teardown_mappings_locked(struct panfrost_gem_object *bo);
83bdefca2dSBoris Brezillon
84013b6510SRob Herring void panfrost_gem_shrinker_init(struct drm_device *dev);
85013b6510SRob Herring void panfrost_gem_shrinker_cleanup(struct drm_device *dev);
86013b6510SRob Herring
87f3ba9122SRob Herring #endif /* __PANFROST_GEM_H__ */
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