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