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error.h
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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */ /* * linux/can/error.h * * Definitions of the CAN error messages to be filtered and passed to the user. * * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of Volkswagen nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * Alternatively, provided that this notice is retained in full, this * software may be distributed under the terms of the GNU General * Public License ("GPL") version 2, in which case the provisions of the * GPL apply INSTEAD OF those given above. * * The provided data structures and external interfaces from this code * are not restricted to be used by modules with a GPL compatible license. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. */ #ifndef _CAN_ERROR_H #define _CAN_ERROR_H #define CAN_ERR_DLC 8 /* dlc for error message frames */ /* error class (mask) in can_id */ #define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */ #define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */ #define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */ #define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */ #define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */ #define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */ #define CAN_ERR_BUSOFF 0x00000040U /* bus off */ #define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */ #define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */ #define CAN_ERR_CNT 0x00000200U /* TX error counter / data[6] */ /* RX error counter / data[7] */ /* arbitration lost in bit ... / data[0] */ #define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */ /* else bit number in bitstream */ /* error status of CAN-controller / data[1] */ #define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */ #define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */ #define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */ #define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */ #define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */ #define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */ #define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */ /* (at least one error counter exceeds */ /* the protocol-defined level of 127) */ #define CAN_ERR_CRTL_ACTIVE 0x40 /* recovered to error active state */ /* error in CAN protocol (type) / data[2] */ #define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */ #define CAN_ERR_PROT_BIT 0x01 /* single bit error */ #define CAN_ERR_PROT_FORM 0x02 /* frame format error */ #define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */ #define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */ #define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */ #define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */ #define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */ #define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */ /* error in CAN protocol (location) / data[3] */ #define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */ #define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */ #define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */ #define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/ #define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */ #define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */ #define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */ #define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */ #define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */ #define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */ #define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */ #define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */ #define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */ #define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */ #define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */ #define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */ #define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */ #define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */ #define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */ #define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */ /* error status of CAN-transceiver / data[4] */ /* CANH CANL */ #define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */ #define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */ #define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */ #define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */ #define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */ #define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */ #define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */ #define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */ #define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */ #define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */ /* data[5] is reserved (do not use) */ /* TX error counter / data[6] */ /* RX error counter / data[7] */ /* CAN state thresholds * * Error counter Error state * ----------------------------------- * 0 - 95 Error-active * 96 - 127 Error-warning * 128 - 255 Error-passive * 256 and greater Bus-off */ #define CAN_ERROR_WARNING_THRESHOLD 96 #define CAN_ERROR_PASSIVE_THRESHOLD 128 #define CAN_BUS_OFF_THRESHOLD 256 #endif /* _CAN_ERROR_H */