/* 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 _UAPI_CAN_ERROR_H
#define _UAPI_CAN_ERROR_H
#define CAN_ERR_DLC 8 /* dlc for error message frames */
/* error class (mask) in can_id */
#define CAN_ERR_TX_TIMEOUT 0 x00000001U /* TX timeout (by netdevice driver) */
#define CAN_ERR_LOSTARB 0 x00000002U /* lost arbitration / data[0] */
#define CAN_ERR_CRTL 0 x00000004U /* controller problems / data[1] */
#define CAN_ERR_PROT 0 x00000008U /* protocol violations / data[2..3] */
#define CAN_ERR_TRX 0 x00000010U /* transceiver status / data[4] */
#define CAN_ERR_ACK 0 x00000020U /* received no ACK on transmission */
#define CAN_ERR_BUSOFF 0 x00000040U /* bus off */
#define CAN_ERR_BUSERROR 0 x00000080U /* bus error (may flood!) */
#define CAN_ERR_RESTARTED 0 x00000100U /* controller restarted */
#define CAN_ERR_CNT 0 x00000200U /* TX error counter / data[6] */
/* RX error counter / data[7] */
/* arbitration lost in bit ... / data[0] */
#define CAN_ERR_LOSTARB_UNSPEC 0 x00 /* unspecified */
/* else bit number in bitstream */
/* error status of CAN-controller / data[1] */
#define CAN_ERR_CRTL_UNSPEC 0 x00 /* unspecified */
#define CAN_ERR_CRTL_RX_OVERFLOW 0 x01 /* RX buffer overflow */
#define CAN_ERR_CRTL_TX_OVERFLOW 0 x02 /* TX buffer overflow */
#define CAN_ERR_CRTL_RX_WARNING 0 x04 /* reached warning level for RX errors */
#define CAN_ERR_CRTL_TX_WARNING 0 x08 /* reached warning level for TX errors */
#define CAN_ERR_CRTL_RX_PASSIVE 0 x10 /* reached error passive status RX */
#define CAN_ERR_CRTL_TX_PASSIVE 0 x20 /* reached error passive status TX */
/* (at least one error counter exceeds */
/* the protocol-defined level of 127) */
#define CAN_ERR_CRTL_ACTIVE 0 x40 /* recovered to error active state */
/* error in CAN protocol (type) / data[2] */
#define CAN_ERR_PROT_UNSPEC 0 x00 /* unspecified */
#define CAN_ERR_PROT_BIT 0 x01 /* single bit error */
#define CAN_ERR_PROT_FORM 0 x02 /* frame format error */
#define CAN_ERR_PROT_STUFF 0 x04 /* bit stuffing error */
#define CAN_ERR_PROT_BIT0 0 x08 /* unable to send dominant bit */
#define CAN_ERR_PROT_BIT1 0 x10 /* unable to send recessive bit */
#define CAN_ERR_PROT_OVERLOAD 0 x20 /* bus overload */
#define CAN_ERR_PROT_ACTIVE 0 x40 /* active error announcement */
#define CAN_ERR_PROT_TX 0 x80 /* error occurred on transmission */
/* error in CAN protocol (location) / data[3] */
#define CAN_ERR_PROT_LOC_UNSPEC 0 x00 /* unspecified */
#define CAN_ERR_PROT_LOC_SOF 0 x03 /* start of frame */
#define CAN_ERR_PROT_LOC_ID28_21 0 x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
#define CAN_ERR_PROT_LOC_ID20_18 0 x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
#define CAN_ERR_PROT_LOC_SRTR 0 x04 /* substitute RTR (SFF: RTR) */
#define CAN_ERR_PROT_LOC_IDE 0 x05 /* identifier extension */
#define CAN_ERR_PROT_LOC_ID17_13 0 x07 /* ID bits 17-13 */
#define CAN_ERR_PROT_LOC_ID12_05 0 x0F /* ID bits 12-5 */
#define CAN_ERR_PROT_LOC_ID04_00 0 x0E /* ID bits 4-0 */
#define CAN_ERR_PROT_LOC_RTR 0 x0C /* RTR */
#define CAN_ERR_PROT_LOC_RES1 0 x0D /* reserved bit 1 */
#define CAN_ERR_PROT_LOC_RES0 0 x09 /* reserved bit 0 */
#define CAN_ERR_PROT_LOC_DLC 0 x0B /* data length code */
#define CAN_ERR_PROT_LOC_DATA 0 x0A /* data section */
#define CAN_ERR_PROT_LOC_CRC_SEQ 0 x08 /* CRC sequence */
#define CAN_ERR_PROT_LOC_CRC_DEL 0 x18 /* CRC delimiter */
#define CAN_ERR_PROT_LOC_ACK 0 x19 /* ACK slot */
#define CAN_ERR_PROT_LOC_ACK_DEL 0 x1B /* ACK delimiter */
#define CAN_ERR_PROT_LOC_EOF 0 x1A /* end of frame */
#define CAN_ERR_PROT_LOC_INTERM 0 x12 /* intermission */
/* error status of CAN-transceiver / data[4] */
/* CANH CANL */
#define CAN_ERR_TRX_UNSPEC 0 x00 /* 0000 0000 */
#define CAN_ERR_TRX_CANH_NO_WIRE 0 x04 /* 0000 0100 */
#define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0 x05 /* 0000 0101 */
#define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0 x06 /* 0000 0110 */
#define CAN_ERR_TRX_CANH_SHORT_TO_GND 0 x07 /* 0000 0111 */
#define CAN_ERR_TRX_CANL_NO_WIRE 0 x40 /* 0100 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0 x50 /* 0101 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0 x60 /* 0110 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_GND 0 x70 /* 0111 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0 x80 /* 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 /* _UAPI_CAN_ERROR_H */
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