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/* 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__ */
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