0d66548a10
This patch adds the CAN core functionality but no protocols or drivers. No protocol implementations are included here. They come as separate patches. Protocol numbers are already in include/linux/can.h. Signed-off-by: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> Signed-off-by: Urs Thuermann <urs.thuermann@volkswagen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
93 lines
4.5 KiB
C
93 lines
4.5 KiB
C
/*
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* linux/can/error.h
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*
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* Definitions of the CAN error frame 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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* Send feedback to <socketcan-users@lists.berlios.de>
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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 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 occured 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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