uapi/linux/psp-dbc.h

1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
24  * struct dbc_user_nonce - Nonce exchange structure (input/output).
27  *               1: authentication: PSP will return multi-use nonce.
39  * struct dbc_user_setuid - UID exchange structure (input).
49  * struct dbc_user_param - Parameter exchange structure (input/output).
50  * @msg_index: Message indicating what parameter to set or get (input)
53  *             - When sending a message this is to be created by software
55  *             - For interpreting results, this signature is updated by the
70  *  -EINVAL:    invalid input
71  *  -E2BIG:     excess data passed
72  *  -EFAULT:    failed to copy to/from userspace
73  *  -EBUSY:     mailbox in recovery or in use
74  *  -ENODEV:    driver not bound with PSP device
75  *  -EACCES:    request isn't authorized
76  *  -EINVAL:    invalid parameter
77  *  -ETIMEDOUT: request timed out
78  *  -EAGAIN:    invalid request for state machine
79  *  -ENOENT:    not implemented
80  *  -ENFILE:    overflow
81  *  -EPERM:     invalid signature
82  *  -EIO:       unknown error
87  * DBCIOCNONCE - Fetch a nonce from the PSP for authenticating commands.
96  * DBCIOCUID - Set the user ID (UID) of a calling process.
105  * DBCIOCPARAM - Set or get a parameter from the PSP.
108  *               Whether the parameter is set or get is controlled by the
118  * enum dbc_cmd_msg - Messages utilized by DBCIOCPARAM
119  * @PARAM_GET_FMAX_CAP:		Get frequency cap (MHz)
120  * @PARAM_SET_FMAX_CAP:		Set frequency cap (MHz)
121  * @PARAM_GET_PWR_CAP:		Get socket power cap (mW)
122  * @PARAM_SET_PWR_CAP:		Set socket power cap (mW)
123  * @PARAM_GET_GFX_MODE:		Get graphics mode (0/1)
125  * @PARAM_GET_CURR_TEMP:	Get current temperature (degrees C)
126  * @PARAM_GET_FMAX_MAX:		Get maximum allowed value for frequency (MHz)
127  * @PARAM_GET_FMAX_MIN:		Get minimum allowed value for frequency (MHz)
128  * @PARAM_GET_SOC_PWR_MAX:	Get maximum allowed value for SoC power (mw)
129  * @PARAM_GET_SOC_PWR_MIN:	Get minimum allowed value for SoC power (mw)
130  * @PARAM_GET_SOC_PWR_CUR:	Get current value for SoC Power (mW)