diff options
Diffstat (limited to 'drivers/gpu/drm/panfrost/panfrost_gem.h')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_gem.h | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panfrost/panfrost_gem.h new file mode 100644 index 000000000000..8de3e76f2717 --- /dev/null +++ b/drivers/gpu/drm/panfrost/panfrost_gem.h @@ -0,0 +1,158 @@ +/* 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_device; + +#define PANFROST_BO_LABEL_MAXLEN 4096 + +enum panfrost_debugfs_gem_state_flags { + /** @PANFROST_DEBUGFS_GEM_STATE_FLAG_IMPORTED: GEM BO is PRIME imported. */ + PANFROST_DEBUGFS_GEM_STATE_FLAG_IMPORTED = BIT(0), + + /** @PANFROST_DEBUGFS_GEM_STATE_FLAG_EXPORTED: GEM BO is PRIME exported. */ + PANFROST_DEBUGFS_GEM_STATE_FLAG_EXPORTED = BIT(1), + + /** @PANFROST_DEBUGFS_GEM_STATE_FLAG_PURGED: GEM BO was reclaimed by the shrinker. */ + PANFROST_DEBUGFS_GEM_STATE_FLAG_PURGED = BIT(2), + + /** + * @PANFROST_DEBUGFS_GEM_STATE_FLAG_PURGEABLE: GEM BO pages were marked as no longer + * needed by UM and can be reclaimed by the shrinker. + */ + PANFROST_DEBUGFS_GEM_STATE_FLAG_PURGEABLE = BIT(3), +}; + +/** + * struct panfrost_gem_debugfs - GEM object's DebugFS list information + */ +struct panfrost_gem_debugfs { + /** + * @node: Node used to insert the object in the device-wide list of + * GEM objects, to display information about it through a DebugFS file. + */ + struct list_head node; + + /** @creator: Information about the UM process which created the GEM. */ + struct { + /** @creator.process_name: Group leader name in owning thread's process */ + char process_name[TASK_COMM_LEN]; + + /** @creator.tgid: PID of the thread's group leader within its process */ + pid_t tgid; + } creator; +}; + +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; + + /* + * Object chunk size currently mapped onto physical memory + */ + size_t heap_rss_size; + + /** + * @label: BO tagging fields. The label can be assigned within the + * driver itself or through a specific IOCTL. + */ + struct { + /** + * @label.str: Pointer to NULL-terminated string, + */ + const char *str; + + /** @lock.str: Protects access to the @label.str field. */ + struct mutex lock; + } label; + + bool noexec :1; + bool is_heap :1; + +#ifdef CONFIG_DEBUG_FS + struct panfrost_gem_debugfs debugfs; +#endif +}; + +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); + +int panfrost_gem_shrinker_init(struct drm_device *dev); +void panfrost_gem_shrinker_cleanup(struct drm_device *dev); + +void panfrost_gem_set_label(struct drm_gem_object *obj, const char *label); +void panfrost_gem_internal_set_label(struct drm_gem_object *obj, const char *label); + +#ifdef CONFIG_DEBUG_FS +void panfrost_gem_debugfs_print_bos(struct panfrost_device *pfdev, + struct seq_file *m); +#endif + +#endif /* __PANFROST_GEM_H__ */ |