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git.proxmox.com Git - mirror_ubuntu-kernels.git/blob - include/linux/uacce.h
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 #include <linux/cdev.h>
6 #include <uapi/misc/uacce/uacce.h>
8 #define UACCE_NAME "uacce"
9 #define UACCE_MAX_REGION 2
10 #define UACCE_MAX_NAME_SIZE 64
16 * struct uacce_qfile_region - structure of queue file region
17 * @type: type of the region
19 struct uacce_qfile_region
{
24 * struct uacce_ops - uacce device operations
25 * @get_available_instances: get available instances left of the device
26 * @get_queue: get a queue from the device
27 * @put_queue: free a queue to the device
28 * @start_queue: make the queue start work after get_queue
29 * @stop_queue: make the queue stop work before put_queue
30 * @is_q_updated: check whether the task is finished
31 * @mmap: mmap addresses of queue to user space
32 * @ioctl: ioctl for user space users of the queue
35 int (*get_available_instances
)(struct uacce_device
*uacce
);
36 int (*get_queue
)(struct uacce_device
*uacce
, unsigned long arg
,
37 struct uacce_queue
*q
);
38 void (*put_queue
)(struct uacce_queue
*q
);
39 int (*start_queue
)(struct uacce_queue
*q
);
40 void (*stop_queue
)(struct uacce_queue
*q
);
41 int (*is_q_updated
)(struct uacce_queue
*q
);
42 int (*mmap
)(struct uacce_queue
*q
, struct vm_area_struct
*vma
,
43 struct uacce_qfile_region
*qfr
);
44 long (*ioctl
)(struct uacce_queue
*q
, unsigned int cmd
,
49 * struct uacce_interface - interface required for uacce_register()
50 * @name: the uacce device name. Will show up in sysfs
51 * @flags: uacce device attributes
52 * @ops: pointer to the struct uacce_ops
54 struct uacce_interface
{
55 char name
[UACCE_MAX_NAME_SIZE
];
57 const struct uacce_ops
*ops
;
68 * @uacce: pointer to uacce
69 * @priv: private pointer
70 * @wait: wait queue head
71 * @list: index into uacce queues list
72 * @qfrs: pointer of qfr regions
73 * @state: queue state machine
74 * @pasid: pasid associated to the mm
75 * @handle: iommu_sva handle returned by iommu_sva_bind_device()
78 struct uacce_device
*uacce
;
80 wait_queue_head_t wait
;
81 struct list_head list
;
82 struct uacce_qfile_region
*qfrs
[UACCE_MAX_REGION
];
83 enum uacce_q_state state
;
85 struct iommu_sva
*handle
;
90 * @algs: supported algorithms
91 * @api_ver: api version
92 * @ops: pointer to the struct uacce_ops
93 * @qf_pg_num: page numbers of the queue file regions
94 * @parent: pointer to the parent device
95 * @is_vf: whether virtual function
96 * @flags: uacce attributes
97 * @dev_id: id of the uacce device
98 * @cdev: cdev of the uacce
99 * @dev: dev of the uacce
100 * @priv: private pointer of the uacce
101 * @queues: list of queues
102 * @queues_lock: lock for queues list
105 struct uacce_device
{
108 const struct uacce_ops
*ops
;
109 unsigned long qf_pg_num
[UACCE_MAX_REGION
];
110 struct device
*parent
;
117 struct list_head queues
;
118 struct mutex queues_lock
;
122 #if IS_ENABLED(CONFIG_UACCE)
124 struct uacce_device
*uacce_alloc(struct device
*parent
,
125 struct uacce_interface
*interface
);
126 int uacce_register(struct uacce_device
*uacce
);
127 void uacce_remove(struct uacce_device
*uacce
);
129 #else /* CONFIG_UACCE */
132 struct uacce_device
*uacce_alloc(struct device
*parent
,
133 struct uacce_interface
*interface
)
135 return ERR_PTR(-ENODEV
);
138 static inline int uacce_register(struct uacce_device
*uacce
)
143 static inline void uacce_remove(struct uacce_device
*uacce
) {}
145 #endif /* CONFIG_UACCE */
147 #endif /* _LINUX_UACCE_H */