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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#include "amdxdna_pci_drv.h"
11
12struct amdxdna_umap {
13 struct vm_area_struct *vma;
14 struct mmu_interval_notifier notifier;
15 struct hmm_range range;
16 struct work_struct hmm_unreg_work;
17 struct amdxdna_gem_obj *abo;
18 struct list_head node;
19 struct kref refcnt;
20 bool invalid;
21 bool unmapped;
22};
23
24struct amdxdna_mem {
25 u64 userptr;
26 void *kva;
27 u64 dev_addr;
28 size_t size;
29 struct page **pages;
30 u32 nr_pages;
31 struct list_head umap_list;
32 bool map_invalid;
33};
34
35struct amdxdna_gem_obj {
36 struct drm_gem_shmem_object base;
37 struct amdxdna_client *client;
38 u8 type;
39 bool pinned;
40 struct mutex lock; /* Protects: pinned */
41 struct amdxdna_mem mem;
42
43 /* Below members is uninitialized when needed */
44 struct drm_mm mm; /* For AMDXDNA_BO_DEV_HEAP */
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
66static inline u64 amdxdna_dev_bo_offset(struct amdxdna_gem_obj *abo)
67{
68 return abo->mem.dev_addr - abo->client->dev_heap->mem.dev_addr;
69}
70
71void amdxdna_umap_put(struct amdxdna_umap *mapp);
72
73struct drm_gem_object *
74amdxdna_gem_create_object_cb(struct drm_device *dev, size_t size);
75struct drm_gem_object *
76amdxdna_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf);
77struct amdxdna_gem_obj *
78amdxdna_drm_alloc_dev_bo(struct drm_device *dev,
79 struct amdxdna_drm_create_bo *args,
80 struct drm_file *filp);
81
82int amdxdna_gem_pin_nolock(struct amdxdna_gem_obj *abo);
83int amdxdna_gem_pin(struct amdxdna_gem_obj *abo);
84void amdxdna_gem_unpin(struct amdxdna_gem_obj *abo);
85
86int amdxdna_drm_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
87int amdxdna_drm_get_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
88int amdxdna_drm_sync_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
89
90#endif /* _AMDXDNA_GEM_H_ */