After software has authenticated a dynamic boost control request, it can fetch and set supported parameters using a selection of messages. Add support for these messages and export the ability to do this to userspace.
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| @@ -45,6 +45,23 @@ struct dbc_user_setuid { · 44 unmodified lines | |||
| 45 | __u8 signature[DBC_SIG_SIZE]; | 45 | __u8 signature[DBC_SIG_SIZE]; |
| 46 | } __packed; | 46 | } __packed; |
| 47 | 47 | ||
| 48 | /** | ||
| 49 | * struct dbc_user_param - Parameter exchange structure (input/output). | ||
| 50 | * @msg_index: Message indicating what parameter to set or get (input) | ||
| 51 | * @param: 4 byte parameter, units are message specific. (input/output) | ||
| 52 | * @signature: 32 byte signature. | ||
| 53 | * - When sending a message this is to be created by software | ||
| 54 | * using a previous nonce (input) | ||
| 55 | * - For interpreting results, this signature is updated by the | ||
| 56 | * PSP to allow software to validate the authenticity of the | ||
| 57 | * results. | ||
| 58 | */ | ||
| 59 | struct dbc_user_param { | ||
| 60 | __u32 msg_index; | ||
| 61 | __u32 param; | ||
| 62 | __u8 signature[DBC_SIG_SIZE]; | ||
| 63 | } __packed; | ||
| 64 | |||
| 48 | /** | 65 | /** |
| 49 | * Dynamic Boost Control (DBC) IOC | 66 | * Dynamic Boost Control (DBC) IOC |
| 50 | * | 67 | * |
| @@ -84,4 +101,47 @@ struct dbc_user_setuid { · 33 unmodified lines | |||
| 84 | */ | 101 | */ |
| 85 | #define DBCIOCUID _IOW(DBC_IOC_TYPE, 0x2, struct dbc_user_setuid) | 102 | #define DBCIOCUID _IOW(DBC_IOC_TYPE, 0x2, struct dbc_user_setuid) |
| 86 | 103 | ||
| 104 | /** | ||
| 105 | * DBCIOCPARAM - Set or get a parameter from the PSP. | ||
| 106 | * This request will only work after DBCIOCUID has successfully | ||
| 107 | * set the UID of the calling process. | ||
| 108 | * Whether the parameter is set or get is controlled by the | ||
| 109 | * message ID in the request. | ||
| 110 | * This command must be sent using a 32 byte signature built | ||
| 111 | * using the nonce fetched from DBCIOCNONCE. | ||
| 112 | * When the command succeeds, the 32 byte signature will be | ||
| 113 | * updated by the PSP for software to authenticate the results. | ||
| 114 | */ | ||
| 115 | #define DBCIOCPARAM _IOWR(DBC_IOC_TYPE, 0x3, struct dbc_user_param) | ||
| 116 | |||
| 117 | /** | ||
| 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) | ||
| 124 | * @PARAM_SET_GFX_MODE: Set 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) | ||
| 131 | */ | ||
| 132 | enum dbc_cmd_msg { | ||
| 133 | PARAM_GET_FMAX_CAP = 0x3, | ||
| 134 | PARAM_SET_FMAX_CAP = 0x4, | ||
| 135 | PARAM_GET_PWR_CAP = 0x5, | ||
| 136 | PARAM_SET_PWR_CAP = 0x6, | ||
| 137 | PARAM_GET_GFX_MODE = 0x7, | ||
| 138 | PARAM_SET_GFX_MODE = 0x8, | ||
| 139 | PARAM_GET_CURR_TEMP = 0x9, | ||
| 140 | PARAM_GET_FMAX_MAX = 0xA, | ||
| 141 | PARAM_GET_FMAX_MIN = 0xB, | ||
| 142 | PARAM_GET_SOC_PWR_MAX = 0xC, | ||
| 143 | PARAM_GET_SOC_PWR_MIN = 0xD, | ||
| 144 | PARAM_GET_SOC_PWR_CUR = 0xE, | ||
| 145 | }; | ||
| 146 | |||
| 87 | #endif /* __PSP_DBC_USER_H__ */ | 147 | #endif /* __PSP_DBC_USER_H__ */ |