Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 <drm/drm_gem_shmem_helper.h>
10#include <linux/hmm.h>
11#include <linux/iova.h>
12#include "amdxdna_pci_drv.h"
13
14struct amdxdna_umap {
15 struct vm_area_struct *vma;
16 struct mmu_interval_notifier notifier;
17 struct hmm_range range;
18 struct work_struct hmm_unreg_work;
19 struct amdxdna_gem_obj *abo;
20 struct list_head node;
21 struct kref refcnt;
22 bool invalid;
23 bool unmapped;
24};
25
26struct amdxdna_mem {
27 void *kva;
28 u64 dma_addr;
29 size_t size;
30 struct list_head umap_list;
31 bool map_invalid;
32 /*
33 * Cache the first mmap uva as PASID addr, which can be accessed by driver
34 * without taking notifier_lock.
35 */
36 u64 uva;
37};
38
39struct amdxdna_gem_obj {
40 struct drm_gem_shmem_object base;
41 struct amdxdna_client *client;
42 u8 type;
43 bool pinned;
44 struct mutex lock; /* Protects: pinned, mem.kva, open_ref */
45 struct amdxdna_mem mem;
46 int open_ref;
47
48 /* Below members are initialized when needed */
49 struct drm_mm mm; /* For AMDXDNA_BO_DEV_HEAP */
50 struct drm_mm_node mm_node; /* For AMDXDNA_BO_DEV */
51 u32 assigned_hwctx;
52 struct dma_buf *dma_buf;
53 struct dma_buf_attachment *attach;
54
55 /* True, if BO is managed by XRT, not application */
56 bool internal;
57};
58
59#define to_gobj(obj) (&(obj)->base.base)
60#define is_import_bo(obj) ((obj)->attach)
61
62static inline struct amdxdna_gem_obj *to_xdna_obj(struct drm_gem_object *gobj)
63{
64 return container_of(gobj, struct amdxdna_gem_obj, base.base);
65}
66
67struct amdxdna_gem_obj *amdxdna_gem_get_obj(struct amdxdna_client *client,
68 u32 bo_hdl, u8 bo_type);
69static inline void amdxdna_gem_put_obj(struct amdxdna_gem_obj *abo)
70{
71 drm_gem_object_put(to_gobj(abo));
72}
73
74void *amdxdna_gem_vmap(struct amdxdna_gem_obj *abo);
75u64 amdxdna_gem_uva(struct amdxdna_gem_obj *abo);
76u64 amdxdna_gem_dev_addr(struct amdxdna_gem_obj *abo);
77
78static inline u64 amdxdna_dev_bo_offset(struct amdxdna_gem_obj *abo)
79{
80 return amdxdna_gem_dev_addr(abo) - amdxdna_gem_dev_addr(abo->client->dev_heap);
81}
82
83static inline u64 amdxdna_obj_dma_addr(struct amdxdna_gem_obj *abo)
84{
85 return amdxdna_pasid_on(abo->client) ? amdxdna_gem_uva(abo) : abo->mem.dma_addr;
86}
87
88void amdxdna_umap_put(struct amdxdna_umap *mapp);
89
90struct drm_gem_object *
91amdxdna_gem_create_shmem_object_cb(struct drm_device *dev, size_t size);
92struct drm_gem_object *
93amdxdna_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf);
94struct amdxdna_gem_obj *
95amdxdna_drm_create_dev_bo(struct drm_device *dev,
96 struct amdxdna_drm_create_bo *args, struct drm_file *filp);
97
98int amdxdna_gem_pin_nolock(struct amdxdna_gem_obj *abo);
99int amdxdna_gem_pin(struct amdxdna_gem_obj *abo);
100void amdxdna_gem_unpin(struct amdxdna_gem_obj *abo);
101
102int amdxdna_drm_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
103int amdxdna_drm_get_bo_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
104int amdxdna_drm_sync_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *filp);
105int amdxdna_drm_get_bo_usage(struct drm_device *dev, struct amdxdna_drm_get_array *args);
106
107#endif /* _AMDXDNA_GEM_H_ */