/* SPDX-License-Identifier: GPL-2.0 */ #ifndef OPEN_ALLIANCE_HELPERS_H #define OPEN_ALLIANCE_HELPERS_H /* * These defines reflect the TDR (Time Delay Reflection) diagnostic feature * for 1000BASE-T1 automotive Ethernet PHYs as specified by the OPEN Alliance. * * The register values are part of the HDD.TDR register, which provides * information about the cable status and faults. The exact register offset * is device-specific and should be provided by the driver. */ #define OA_1000BT1_HDD_TDR_ACTIVATION_MASK … #define OA_1000BT1_HDD_TDR_ACTIVATION_OFF … #define OA_1000BT1_HDD_TDR_ACTIVATION_ON … #define OA_1000BT1_HDD_TDR_STATUS_MASK … #define OA_1000BT1_HDD_TDR_STATUS_SHORT … #define OA_1000BT1_HDD_TDR_STATUS_OPEN … #define OA_1000BT1_HDD_TDR_STATUS_NOISE … #define OA_1000BT1_HDD_TDR_STATUS_CABLE_OK … #define OA_1000BT1_HDD_TDR_STATUS_TEST_IN_PROGRESS … #define OA_1000BT1_HDD_TDR_STATUS_TEST_NOT_POSSIBLE … /* * OA_1000BT1_HDD_TDR_DISTANCE_MASK: * This mask is used to extract the distance to the first/main fault * detected by the TDR feature. Each bit represents an approximate distance * of 1 meter, ranging from 0 to 31 meters. The exact interpretation of the * bits may vary, but generally: * 000000 = no error * 000001 = error about 0-1m away * 000010 = error between 1-2m away * ... * 011111 = error about 30-31m away * 111111 = resolution not possible / out of distance */ #define OA_1000BT1_HDD_TDR_DISTANCE_MASK … #define OA_1000BT1_HDD_TDR_DISTANCE_NO_ERROR … #define OA_1000BT1_HDD_TDR_DISTANCE_RESOLUTION_NOT_POSSIBLE … int oa_1000bt1_get_ethtool_cable_result_code(u16 reg_value); int oa_1000bt1_get_tdr_distance(u16 reg_value); #endif /* OPEN_ALLIANCE_HELPERS_H */
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