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As Heinz-Juergen Oertel pointed out 'CAN error frames' are a already defined term for the CAN protocol violation indication on the wire. To avoid confusion with the error messages created by CAN drivers available via CAN RAW sockets update the documentation and change the naming from 'error frames' to 'error messages' or 'error message frames'. Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
92 lines
4.4 KiB
C
92 lines
4.4 KiB
C
/*
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* linux/can/error.h
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*
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* Definitions of the CAN error messages to be filtered and passed to the user.
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*
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* Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
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* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
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* All rights reserved.
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*
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*/
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#ifndef CAN_ERROR_H
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#define CAN_ERROR_H
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#define CAN_ERR_DLC 8 /* dlc for error message frames */
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/* error class (mask) in can_id */
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#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */
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#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */
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#define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */
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#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */
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#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */
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#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */
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#define CAN_ERR_BUSOFF 0x00000040U /* bus off */
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#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */
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#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */
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/* arbitration lost in bit ... / data[0] */
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#define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */
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/* else bit number in bitstream */
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/* error status of CAN-controller / data[1] */
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#define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */
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#define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */
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#define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */
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#define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */
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#define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */
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#define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */
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#define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */
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/* (at least one error counter exceeds */
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/* the protocol-defined level of 127) */
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/* error in CAN protocol (type) / data[2] */
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#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */
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#define CAN_ERR_PROT_BIT 0x01 /* single bit error */
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#define CAN_ERR_PROT_FORM 0x02 /* frame format error */
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#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */
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#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */
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#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */
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#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */
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#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */
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#define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */
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/* error in CAN protocol (location) / data[3] */
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#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */
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#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */
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#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
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#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
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#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */
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#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */
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#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */
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#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */
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#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */
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#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */
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#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */
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#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */
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#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */
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#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */
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#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */
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#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */
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#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */
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#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */
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#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */
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#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */
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/* error status of CAN-transceiver / data[4] */
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/* CANH CANL */
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#define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */
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#define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */
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#define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */
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#define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */
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#define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */
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#define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */
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#define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */
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#define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */
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#define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */
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#define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */
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/* controller specific additional information / data[5..7] */
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#endif /* CAN_ERROR_H */
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