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9c92ab61 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
967c9cca JW |
2 | /* |
3 | * Copyright (c) 2015-2016, Linaro Limited | |
967c9cca JW |
4 | */ |
5 | #ifndef TEE_PRIVATE_H | |
6 | #define TEE_PRIVATE_H | |
7 | ||
8 | #include <linux/cdev.h> | |
9 | #include <linux/completion.h> | |
10 | #include <linux/device.h> | |
11 | #include <linux/kref.h> | |
12 | #include <linux/mutex.h> | |
13 | #include <linux/types.h> | |
14 | ||
967c9cca JW |
15 | #define TEE_DEVICE_FLAG_REGISTERED 0x1 |
16 | #define TEE_MAX_DEV_NAME_LEN 32 | |
17 | ||
18 | /** | |
19 | * struct tee_device - TEE Device representation | |
20 | * @name: name of device | |
21 | * @desc: description of device | |
22 | * @id: unique id of device | |
23 | * @flags: represented by TEE_DEVICE_FLAG_REGISTERED above | |
24 | * @dev: embedded basic device structure | |
25 | * @cdev: embedded cdev | |
26 | * @num_users: number of active users of this device | |
27 | * @c_no_user: completion used when unregistering the device | |
28 | * @mutex: mutex protecting @num_users and @idr | |
f1bbaced JW |
29 | * @idr: register of user space shared memory objects allocated or |
30 | * registered on this device | |
967c9cca JW |
31 | * @pool: shared memory pool |
32 | */ | |
33 | struct tee_device { | |
34 | char name[TEE_MAX_DEV_NAME_LEN]; | |
35 | const struct tee_desc *desc; | |
36 | int id; | |
37 | unsigned int flags; | |
38 | ||
39 | struct device dev; | |
40 | struct cdev cdev; | |
41 | ||
42 | size_t num_users; | |
43 | struct completion c_no_users; | |
44 | struct mutex mutex; /* protects num_users and idr */ | |
45 | ||
46 | struct idr idr; | |
47 | struct tee_shm_pool *pool; | |
48 | }; | |
49 | ||
50 | int tee_shm_init(void); | |
51 | ||
52 | int tee_shm_get_fd(struct tee_shm *shm); | |
53 | ||
54 | bool tee_device_get(struct tee_device *teedev); | |
55 | void tee_device_put(struct tee_device *teedev); | |
56 | ||
217e0250 VB |
57 | void teedev_ctx_get(struct tee_context *ctx); |
58 | void teedev_ctx_put(struct tee_context *ctx); | |
59 | ||
71cc47d4 | 60 | struct tee_shm *tee_shm_alloc_user_buf(struct tee_context *ctx, size_t size); |
056d3fed JW |
61 | struct tee_shm *tee_shm_register_user_buf(struct tee_context *ctx, |
62 | unsigned long addr, size_t length); | |
71cc47d4 | 63 | |
967c9cca | 64 | #endif /*TEE_PRIVATE_H*/ |