1/* 2 * linux/can/error.h 3 * 4 * Definitions of the CAN error frame to be filtered and passed to the user. 5 * 6 * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> 7 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research 8 * All rights reserved. 9 * 10 * Send feedback to <socketcan-users@lists.berlios.de> 11 * 12 */ 13 14#ifndef CAN_ERROR_H 15#define CAN_ERROR_H 16 17#define CAN_ERR_DLC 8 /* dlc for error frames */ 18 19/* error class (mask) in can_id */ 20#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */ 21#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */ 22#define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */ 23#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */ 24#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */ 25#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */ 26#define CAN_ERR_BUSOFF 0x00000040U /* bus off */ 27#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */ 28#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */ 29 30/* arbitration lost in bit ... / data[0] */ 31#define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */ 32 /* else bit number in bitstream */ 33 34/* error status of CAN-controller / data[1] */ 35#define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */ 36#define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */ 37#define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */ 38#define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */ 39#define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */ 40#define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */ 41#define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */ 42 /* (at least one error counter exceeds */ 43 /* the protocol-defined level of 127) */ 44 45/* error in CAN protocol (type) / data[2] */ 46#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */ 47#define CAN_ERR_PROT_BIT 0x01 /* single bit error */ 48#define CAN_ERR_PROT_FORM 0x02 /* frame format error */ 49#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */ 50#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */ 51#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */ 52#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */ 53#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */ 54#define CAN_ERR_PROT_TX 0x80 /* error occured on transmission */ 55 56/* error in CAN protocol (location) / data[3] */ 57#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */ 58#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */ 59#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */ 60#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/ 61#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */ 62#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */ 63#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */ 64#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */ 65#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */ 66#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */ 67#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */ 68#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */ 69#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */ 70#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */ 71#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */ 72#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */ 73#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */ 74#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */ 75#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */ 76#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */ 77 78/* error status of CAN-transceiver / data[4] */ 79/* CANH CANL */ 80#define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */ 81#define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */ 82#define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */ 83#define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */ 84#define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */ 85#define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */ 86#define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */ 87#define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */ 88#define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */ 89#define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */ 90 91/* controller specific additional information / data[5..7] */ 92 93#endif /* CAN_ERROR_H */ 94