1 /* 2 * linux/can/error.h 3 * 4 * Definitions of the CAN error messages 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 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of Volkswagen nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * Alternatively, provided that this notice is retained in full, this 23 * software may be distributed under the terms of the GNU General 24 * Public License ("GPL") version 2, in which case the provisions of the 25 * GPL apply INSTEAD OF those given above. 26 * 27 * The provided data structures and external interfaces from this code 28 * are not restricted to be used by modules with a GPL compatible license. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 31 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 32 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 33 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 34 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 36 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 37 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 38 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 39 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 40 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH 41 * DAMAGE. 42 */ 43 44 #ifndef _UAPI_CAN_ERROR_H 45 #define _UAPI_CAN_ERROR_H 46 47 #define CAN_ERR_DLC 8 /* dlc for error message frames */ 48 49 /* error class (mask) in can_id */ 50 #define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */ 51 #define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */ 52 #define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */ 53 #define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */ 54 #define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */ 55 #define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */ 56 #define CAN_ERR_BUSOFF 0x00000040U /* bus off */ 57 #define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */ 58 #define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */ 59 60 /* arbitration lost in bit ... / data[0] */ 61 #define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */ 62 /* else bit number in bitstream */ 63 64 /* error status of CAN-controller / data[1] */ 65 #define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */ 66 #define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */ 67 #define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */ 68 #define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */ 69 #define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */ 70 #define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */ 71 #define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */ 72 /* (at least one error counter exceeds */ 73 /* the protocol-defined level of 127) */ 74 #define CAN_ERR_CRTL_ACTIVE 0x40 /* recovered to error active state */ 75 76 /* error in CAN protocol (type) / data[2] */ 77 #define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */ 78 #define CAN_ERR_PROT_BIT 0x01 /* single bit error */ 79 #define CAN_ERR_PROT_FORM 0x02 /* frame format error */ 80 #define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */ 81 #define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */ 82 #define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */ 83 #define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */ 84 #define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */ 85 #define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */ 86 87 /* error in CAN protocol (location) / data[3] */ 88 #define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */ 89 #define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */ 90 #define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */ 91 #define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/ 92 #define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */ 93 #define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */ 94 #define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */ 95 #define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */ 96 #define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */ 97 #define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */ 98 #define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */ 99 #define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */ 100 #define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */ 101 #define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */ 102 #define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */ 103 #define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */ 104 #define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */ 105 #define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */ 106 #define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */ 107 #define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */ 108 109 /* error status of CAN-transceiver / data[4] */ 110 /* CANH CANL */ 111 #define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */ 112 #define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */ 113 #define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */ 114 #define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */ 115 #define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */ 116 #define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */ 117 #define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */ 118 #define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */ 119 #define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */ 120 #define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */ 121 122 /* controller specific additional information / data[5..7] */ 123 124 #endif /* _UAPI_CAN_ERROR_H */ 125