1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright (c) 2018 Linaro Limited
4  */
5 
6 #ifndef __OPTEE_PRIVATE_H
7 #define __OPTEE_PRIVATE_H
8 
9 #include <tee.h>
10 #include <log.h>
11 
12 /**
13  * struct optee_private - OP-TEE driver private data
14  * @rpmb_mmc:		mmc device for the RPMB partition
15  * @rpmb_dev_id:	mmc device id matching @rpmb_mmc
16  * @rpmb_original_part:	the previosly active partition on the mmc device,
17  *			used to restore active the partition when the RPMB
18  *			accesses are finished
19  */
20 struct optee_private {
21 	struct mmc *rpmb_mmc;
22 	int rpmb_dev_id;
23 	int rpmb_original_part;
24 };
25 
26 struct optee_msg_arg;
27 
28 void optee_suppl_cmd(struct udevice *dev, struct tee_shm *shm_arg,
29 		     void **page_list);
30 
31 #ifdef CONFIG_SUPPORT_EMMC_RPMB
32 /**
33  * optee_suppl_cmd_rpmb() - route RPMB frames to mmc
34  * @dev:	device with the selected RPMB partition
35  * @arg:	OP-TEE message holding the frames to transmit to the mmc
36  *		and space for the response frames.
37  *
38  * Routes signed (MACed) RPMB frames from OP-TEE Secure OS to MMC and vice
39  * versa to manipulate the RPMB partition.
40  */
41 void optee_suppl_cmd_rpmb(struct udevice *dev, struct optee_msg_arg *arg);
42 
43 /**
44  * optee_suppl_rpmb_release() - release mmc device
45  * @dev:	mmc device
46  *
47  * Releases the mmc device and restores the previously selected partition.
48  */
49 void optee_suppl_rpmb_release(struct udevice *dev);
50 #else
optee_suppl_cmd_rpmb(struct udevice * dev,struct optee_msg_arg * arg)51 static inline void optee_suppl_cmd_rpmb(struct udevice *dev,
52 					struct optee_msg_arg *arg)
53 {
54 	debug("OPTEE_MSG_RPC_CMD_RPMB not implemented\n");
55 	arg->ret = TEE_ERROR_NOT_IMPLEMENTED;
56 }
57 
optee_suppl_rpmb_release(struct udevice * dev)58 static inline void optee_suppl_rpmb_release(struct udevice *dev)
59 {
60 }
61 #endif
62 
63 #ifdef CONFIG_DM_I2C
64 /**
65  * optee_suppl_cmd_i2c_transfer() - route I2C requests to an I2C chip
66  * @arg:	OP-TEE message (layout specified in optee_msg.h) defining the
67  *		transfer mode (read/write), adapter, chip and control flags.
68  *
69  * Handles OP-TEE requests to transfer data to the I2C chip on the I2C adapter.
70  */
71 void optee_suppl_cmd_i2c_transfer(struct optee_msg_arg *arg);
72 #else
optee_suppl_cmd_i2c_transfer(struct optee_msg_arg * arg)73 static inline void optee_suppl_cmd_i2c_transfer(struct optee_msg_arg *arg)
74 {
75 	debug("OPTEE_MSG_RPC_CMD_I2C_TRANSFER not implemented\n");
76 	arg->ret = TEE_ERROR_NOT_IMPLEMENTED;
77 }
78 #endif
79 
80 void *optee_alloc_and_init_page_list(void *buf, ulong len, u64 *phys_buf_ptr);
81 
82 #endif /* __OPTEE_PRIVATE_H */
83