Responses

Responses are events, that are sent from the ME to the host, as a reaction to a command that was sent before. They will consist of the 4 byte response code, a 4 byte status code, and 80 bytes payload.

struct ipts_response {
	u32 code;
	u32 status;
	u8 data[80];
};

The status code can be one of the following:

SUCCESS

• code: 0
• Requested operation was successful.

INVALID_PARAMS

• code: 1
• Invalid parameter(s) sent.

ACCESS_DENIED

• code: 2
• Unable to validate address range.

CMD_SIZE_ERROR

• code: 3
• Message has incorrect size for specified command.

NOT_READY

• code: 4
• Memory window not set or device is not armed for operation.

REQUEST_OUTSTANDING

• code: 5
• There is already an outstanding message of the same type, must wait for response before sending another request of that type.

NO_SENSOR_FOUND

• code: 6
• Sensor could not be found. Either no sensor is connected, the sensor has not yet initialized, or the system is improperly configured.

OUT_OF_MEMORY

• code: 7
• Not enough memory/storage for requested operation.

INTERNAL_ERROR

• code: 8
• Unexpected error occurred.

SENSOR_DISABLED

• code: 9
• Sensor has been disabled or reset and must be reinitialized.

COMPAT_CHECK_FAIL

• code: 10
• Compatibility revision check between sensor and ME failed.

SENSOR_EXPECTED_RESET

• code: 11
• Indicates sensor went through a reset initiated by the ME.

SENSOR_UNEXPECTED_RESET

• code: 12
• Sensor went through an unexpected reset.

RESET_FAILED

• code: 13
• Requested sensor reset failed to complete.

TIMEOUT

• code: 14
• Operation timed out.

TEST_MODE_FAIL

• code: 15
• Test mode pattern did not match expected values.

SENSOR_FAIL_FATAL

• code: 16
• Sensor reported fatal error during reset sequence. Further progress is not possible.

SENSOR_FAIL_NONFATAL

• code: 17
• Sensor reported non-fatal error during reset sequence, logged the error and will attempt to continue.

INVALID_DEVICE_CAPS

• code: 18
• Sensor reported invalid capabilities, such as not supporting required minimum frequency or I/O mode.

QUIESCE_IO_IN_PROGRESS

• code: 19
• Command cannot be complete until ongoing Quiesce I/O flow has completed.