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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * Copyright (C) 2024, Advanced Micro Devices, Inc.
4 */
5
6#ifndef _AMDXDNA_GEM_H_
7#define _AMDXDNA_GEM_H_
8
9#include <linux/hmm.h>
10
11struct amdxdna_umap {
12 struct vm_area_struct *vma;
13 struct mmu_interval_notifier notifier;
14 struct hmm_range range;
15 struct work_struct hmm_unreg_work;
16 struct amdxdna_gem_obj *abo;
17 struct list_head node;
18 struct kref refcnt;
19 bool invalid;
20 bool unmapped;
21};
22
23struct amdxdna_mem {
24 u64 userptr;
25 void *kva;
26 u64 dev_addr;
27 size_t size;
28 struct page **pages;
29 u32 nr_pages;
30 struct list_head umap_list;
31 bool map_invalid;
32};
33
34struct amdxdna_gem_obj {
35 struct drm_gem_shmem_object base;
36 struct amdxdna_client *client;
37 u8 type;
38 bool pinned;
39 struct mutex lock; /* Protects: pinned */
40 struct amdxdna_mem mem;
41
42 /* Below members is uninitialized when needed */
43 struct drm_mm mm; /* For AMDXDNA_BO_DEV_HEAP */
44 struct amdxdna_gem_obj *dev_heap; /* For AMDXDNA_BO_DEV */
45 struct drm_mm_node mm_node; /* For AMDXDNA_BO_DEV */
46 u32 assigned_hwctx;
47 struct dma_buf *dma_buf;
48 struct dma_buf_attachment *attach;
49};
50
51#define to_gobj(obj) (&(obj)->base.base)
52#define is_import_bo(obj) ((obj)->attach)
53
54static inline struct amdxdna_gem_obj *to_xdna_obj(struct drm_gem_object *gobj)
55{
56 return container_of(gobj, struct amdxdna_gem_obj, base.base);
57}
58
59struct amdxdna_gem_obj *amdxdna_gem_get_obj(struct amdxdna_client *client,
60 u32 bo_hdl, u8 bo_type);
61static inline void amdxdna_gem_put_obj(struct amdxdna_gem_obj *abo)
62{
63 drm_gem_object_put(to_gobj(abo));
64}
65
66void amdxdna_umap_put(struct amdxdna_umap *mapp);
67
68struct drm_gem_object *
69amdxdna_gem_create_object_cb(struct drm_device *dev, size_t size);
70struct drm_gem_object *
71amdxdna_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf);
72struct amdxdna_gem_obj *
73amdxdna_drm_alloc_dev_bo(struct drm_device *dev,
74 struct amdxdna_drm_create_bo *args,
75 struct drm_file *filp, bool use_vmap);
76
77int amdxdna_gem_pin_nolock(struct amdxdna_gem_obj *abo);
78int amdxdna_gem_pin(struct amdxdna_gem_obj *abo);
79void amdxdna_gem_unpin(struct amdxdna_gem_obj *abo);
80
81int amdxdna_drm_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
82int amdxdna_drm_get_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
83int amdxdna_drm_sync_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
84
85#endif /* _AMDXDNA_GEM_H_ */