linux/drivers/gpu/drm/msm/msm_gem.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2013 Red Hat
 * Author: Rob Clark <[email protected]>
 */

#ifndef __MSM_GEM_H__
#define __MSM_GEM_H__

#include <linux/kref.h>
#include <linux/dma-resv.h>
#include "drm/drm_exec.h"
#include "drm/gpu_scheduler.h"
#include "msm_drv.h"

/* Make all GEM related WARN_ON()s ratelimited.. when things go wrong they
 * tend to go wrong 1000s of times in a short timespan.
 */
#define GEM_WARN_ON(x) …

/* Additional internal-use only BO flags: */
#define MSM_BO_STOLEN …
#define MSM_BO_MAP_PRIV …

struct msm_gem_address_space { … };

struct msm_gem_address_space *
msm_gem_address_space_get(struct msm_gem_address_space *aspace);

void msm_gem_address_space_put(struct msm_gem_address_space *aspace);

struct msm_gem_address_space *
msm_gem_address_space_create(struct msm_mmu *mmu, const char *name,
		u64 va_start, u64 size);

struct msm_fence_context;

struct msm_gem_vma { … };

struct msm_gem_vma *msm_gem_vma_new(struct msm_gem_address_space *aspace);
int msm_gem_vma_init(struct msm_gem_vma *vma, int size,
		u64 range_start, u64 range_end);
void msm_gem_vma_purge(struct msm_gem_vma *vma);
int msm_gem_vma_map(struct msm_gem_vma *vma, int prot, struct sg_table *sgt, int size);
void msm_gem_vma_close(struct msm_gem_vma *vma);

struct msm_gem_object { … };
#define to_msm_bo(x) …

uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj);
int msm_gem_pin_vma_locked(struct drm_gem_object *obj, struct msm_gem_vma *vma);
void msm_gem_unpin_locked(struct drm_gem_object *obj);
void msm_gem_unpin_active(struct drm_gem_object *obj);
struct msm_gem_vma *msm_gem_get_vma_locked(struct drm_gem_object *obj,
					   struct msm_gem_address_space *aspace);
int msm_gem_get_iova(struct drm_gem_object *obj,
		struct msm_gem_address_space *aspace, uint64_t *iova);
int msm_gem_set_iova(struct drm_gem_object *obj,
		struct msm_gem_address_space *aspace, uint64_t iova);
int msm_gem_get_and_pin_iova_range(struct drm_gem_object *obj,
		struct msm_gem_address_space *aspace, uint64_t *iova,
		u64 range_start, u64 range_end);
int msm_gem_get_and_pin_iova(struct drm_gem_object *obj,
		struct msm_gem_address_space *aspace, uint64_t *iova);
void msm_gem_unpin_iova(struct drm_gem_object *obj,
		struct msm_gem_address_space *aspace);
void msm_gem_pin_obj_locked(struct drm_gem_object *obj);
struct page **msm_gem_pin_pages_locked(struct drm_gem_object *obj);
void msm_gem_unpin_pages_locked(struct drm_gem_object *obj);
int msm_gem_dumb_create(struct drm_file *file, struct drm_device *dev,
		struct drm_mode_create_dumb *args);
int msm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
		uint32_t handle, uint64_t *offset);
void *msm_gem_get_vaddr_locked(struct drm_gem_object *obj);
void *msm_gem_get_vaddr(struct drm_gem_object *obj);
void *msm_gem_get_vaddr_active(struct drm_gem_object *obj);
void msm_gem_put_vaddr_locked(struct drm_gem_object *obj);
void msm_gem_put_vaddr(struct drm_gem_object *obj);
int msm_gem_madvise(struct drm_gem_object *obj, unsigned madv);
bool msm_gem_active(struct drm_gem_object *obj);
int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op, ktime_t *timeout);
int msm_gem_cpu_fini(struct drm_gem_object *obj);
int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
		uint32_t size, uint32_t flags, uint32_t *handle, char *name);
struct drm_gem_object *msm_gem_new(struct drm_device *dev,
		uint32_t size, uint32_t flags);
void *msm_gem_kernel_new(struct drm_device *dev, uint32_t size,
		uint32_t flags, struct msm_gem_address_space *aspace,
		struct drm_gem_object **bo, uint64_t *iova);
void msm_gem_kernel_put(struct drm_gem_object *bo,
		struct msm_gem_address_space *aspace);
struct drm_gem_object *msm_gem_import(struct drm_device *dev,
		struct dma_buf *dmabuf, struct sg_table *sgt);
__printf(2, 3)
void msm_gem_object_set_name(struct drm_gem_object *bo, const char *fmt, ...);

#ifdef CONFIG_DEBUG_FS
struct msm_gem_stats { … };

void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m,
		struct msm_gem_stats *stats);
void msm_gem_describe_objects(struct list_head *list, struct seq_file *m);
#endif

static inline void
msm_gem_lock(struct drm_gem_object *obj)
{ … }

static inline int
msm_gem_lock_interruptible(struct drm_gem_object *obj)
{ … }

static inline void
msm_gem_unlock(struct drm_gem_object *obj)
{ … }

static inline void
msm_gem_assert_locked(struct drm_gem_object *obj)
{ … }

/* imported/exported objects are not purgeable: */
static inline bool is_unpurgeable(struct msm_gem_object *msm_obj)
{ … }

static inline bool is_purgeable(struct msm_gem_object *msm_obj)
{ … }

static inline bool is_vunmapable(struct msm_gem_object *msm_obj)
{ … }

static inline bool is_unevictable(struct msm_gem_object *msm_obj)
{ … }

void msm_gem_purge(struct drm_gem_object *obj);
void msm_gem_evict(struct drm_gem_object *obj);
void msm_gem_vunmap(struct drm_gem_object *obj);

/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
 * associated with the cmdstream submission for synchronization (and
 * make it easier to unwind when things go wrong, etc).
 */
struct msm_gem_submit { … };

static inline struct msm_gem_submit *to_msm_submit(struct drm_sched_job *job)
{ … }

void __msm_gem_submit_destroy(struct kref *kref);

static inline void msm_gem_submit_get(struct msm_gem_submit *submit)
{ … }

static inline void msm_gem_submit_put(struct msm_gem_submit *submit)
{ … }

void msm_submit_retire(struct msm_gem_submit *submit);

/* helper to determine of a buffer in submit should be dumped, used for both
 * devcoredump and debugfs cmdstream dumping:
 */
static inline bool
should_dump(struct msm_gem_submit *submit, int idx)
{ … }

#endif /* __MSM_GEM_H__ */