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