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/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */

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* linux/can/error.h

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* Definitions of the CAN error messages to be filtered and passed to the user.

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* Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>

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* Redistribution and use in source and binary forms, with or without

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* modification, are permitted provided that the following conditions

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* are met:

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* 1. Redistributions of source code must retain the above copyright

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* notice, this list of conditions and the following disclaimer.

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* 2. Redistributions in binary form must reproduce the above copyright

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* notice, this list of conditions and the following disclaimer in the

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* documentation and/or other materials provided with the distribution.

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* 3. Neither the name of Volkswagen nor the names of its contributors

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* may be used to endorse or promote products derived from this software

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* without specific prior written permission.

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* Alternatively, provided that this notice is retained in full, this

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* software may be distributed under the terms of the GNU General

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* Public License ("GPL") version 2, in which case the provisions of the

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* GPL apply INSTEAD OF those given above.

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* The provided data structures and external interfaces from this code

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* are not restricted to be used by modules with a GPL compatible license.

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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH

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* DAMAGE.

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#ifndef _CAN_ERROR_H

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#define _CAN_ERROR_H

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#define CAN_ERR_DLC 8 /* dlc for error message frames */

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/* error class (mask) in can_id */

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#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */

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#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */

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#define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */

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#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */

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#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */

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#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */

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#define CAN_ERR_BUSOFF 0x00000040U /* bus off */

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#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */

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#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */

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/* arbitration lost in bit ... / data[0] */

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#define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */

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/* else bit number in bitstream */

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/* error status of CAN-controller / data[1] */

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#define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */

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#define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */

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#define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */

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#define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */

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#define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */

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#define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */

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#define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */

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/* (at least one error counter exceeds */

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/* the protocol-defined level of 127) */

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#define CAN_ERR_CRTL_ACTIVE 0x40 /* recovered to error active state */

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/* error in CAN protocol (type) / data[2] */

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#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */

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#define CAN_ERR_PROT_BIT 0x01 /* single bit error */

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#define CAN_ERR_PROT_FORM 0x02 /* frame format error */

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#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */

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#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */

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#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */

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#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */

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#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */

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#define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */

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/* error in CAN protocol (location) / data[3] */

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#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */

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#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */

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#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */

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#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/

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#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */

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#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */

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#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */

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#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */

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#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */

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#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */

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#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */

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#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */

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#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */

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#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */

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#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */

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#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */

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#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */

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#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */

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#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */

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#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */

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/* error status of CAN-transceiver / data[4] */

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/* CANH CANL */

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#define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */

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#define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */

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#define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */

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#define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */

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#define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */

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#define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */

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#define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */

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#define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */

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#define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */

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#define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */

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/* controller specific additional information / data[5..7] */

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#endif /* _CAN_ERROR_H */

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