1/* SPDX-License-Identifier: GPL-2.0 */
  2/*
  3 * Copyright (C) 2015-2018 Etnaviv Project
  4 */
  5
  6#ifndef __ETNAVIV_GEM_H__
  7#define __ETNAVIV_GEM_H__
  8
  9#include <linux/dma-resv.h>
 10#include "etnaviv_cmdbuf.h"
 11#include "etnaviv_drv.h"
 12
 13struct dma_fence;
 14struct etnaviv_gem_ops;
 15struct etnaviv_gem_object;
 16
 17struct etnaviv_gem_userptr {
 18	uintptr_t ptr;
 19	struct mm_struct *mm;
 20	bool ro;
 21};
 22
 23struct etnaviv_vram_mapping {
 24	struct list_head obj_node;
 25	struct list_head scan_node;
 26	struct list_head mmu_node;
 27	struct etnaviv_gem_object *object;
 28	struct etnaviv_iommu_context *context;
 29	struct drm_mm_node vram_node;
 30	unsigned int use;
 31	u32 iova;
 32};
 33
 34struct etnaviv_gem_object {
 35	struct drm_gem_object base;
 36	const struct etnaviv_gem_ops *ops;
 37	struct mutex lock;
 38
 39	/*
 40	 * The actual size that is visible to the GPU, not necessarily
 41	 * PAGE_SIZE aligned, but should be aligned to GPU page size.
 42	 */
 43	u32 size;
 44	u32 flags;
 45
 46	struct list_head gem_node;
 47	struct etnaviv_gpu *gpu;     /* non-null if active */
 48	atomic_t gpu_active;
 49	u32 access;
 50
 51	struct page **pages;
 52	struct sg_table *sgt;
 53	void *vaddr;
 54
 55	struct list_head vram_list;
 56
 57	/* cache maintenance */
 58	u32 last_cpu_prep_op;
 59
 60	struct etnaviv_gem_userptr userptr;
 61};
 62
 63static inline
 64struct etnaviv_gem_object *to_etnaviv_bo(struct drm_gem_object *obj)
 65{
 66	return container_of(obj, struct etnaviv_gem_object, base);
 67}
 68
 69struct etnaviv_gem_ops {
 70	int (*get_pages)(struct etnaviv_gem_object *);
 71	void (*release)(struct etnaviv_gem_object *);
 72	void *(*vmap)(struct etnaviv_gem_object *);
 73	int (*mmap)(struct etnaviv_gem_object *, struct vm_area_struct *);
 74};
 75
 76static inline bool is_active(struct etnaviv_gem_object *etnaviv_obj)
 77{
 78	return atomic_read(&etnaviv_obj->gpu_active) != 0;
 79}
 80
 81#define MAX_CMDS 4
 82
 83struct etnaviv_gem_submit_bo {
 84	u32 flags;
 85	u64 va;
 86	struct etnaviv_gem_object *obj;
 87	struct etnaviv_vram_mapping *mapping;
 88};
 89
 90/* Created per submit-ioctl, to track bo's and cmdstream bufs, etc,
 91 * associated with the cmdstream submission for synchronization (and
 92 * make it easier to unwind when things go wrong, etc).
 93 */
 94struct etnaviv_gem_submit {
 95	struct drm_sched_job sched_job;
 96	struct kref refcount;
 97	struct etnaviv_file_private *ctx;
 98	struct etnaviv_gpu *gpu;
 99	struct etnaviv_iommu_context *mmu_context, *prev_mmu_context;
100	struct dma_fence *out_fence;
101	int out_fence_id;
102	struct list_head node; /* GPU active submit list */
103	struct etnaviv_cmdbuf cmdbuf;
104	struct pid *pid;       /* submitting process */
105	u32 exec_state;
106	u32 flags;
107	unsigned int nr_pmrs;
108	struct etnaviv_perfmon_request *pmrs;
109	unsigned int nr_bos;
110	struct etnaviv_gem_submit_bo bos[];
111	/* No new members here, the previous one is variable-length! */
112};
113
114void etnaviv_submit_put(struct etnaviv_gem_submit * submit);
115
116int etnaviv_gem_wait_bo(struct etnaviv_gpu *gpu, struct drm_gem_object *obj,
117	struct drm_etnaviv_timespec *timeout);
118int etnaviv_gem_new_private(struct drm_device *dev, size_t size, u32 flags,
119	const struct etnaviv_gem_ops *ops, struct etnaviv_gem_object **res);
120void etnaviv_gem_obj_add(struct drm_device *dev, struct drm_gem_object *obj);
121struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *obj);
122void etnaviv_gem_put_pages(struct etnaviv_gem_object *obj);
123
124struct etnaviv_vram_mapping *etnaviv_gem_mapping_get(
125	struct drm_gem_object *obj, struct etnaviv_iommu_context *mmu_context,
126	u64 va);
127void etnaviv_gem_mapping_unreference(struct etnaviv_vram_mapping *mapping);
128
129#endif /* __ETNAVIV_GEM_H__ */