1 /* SPDX-License-Identifier: ((GPL-2.0-only WIT 1 /* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
2 /* 2 /*
3 * linux/can/error.h 3 * linux/can/error.h
4 * 4 *
5 * Definitions of the CAN error messages to be 5 * Definitions of the CAN error messages to be filtered and passed to the user.
6 * 6 *
7 * Author: Oliver Hartkopp <oliver.hartkopp@vo 7 * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
8 * Copyright (c) 2002-2007 Volkswagen Group El 8 * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
9 * All rights reserved. 9 * All rights reserved.
10 * 10 *
11 * Redistribution and use in source and binary 11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that t 12 * modification, are permitted provided that the following conditions
13 * are met: 13 * are met:
14 * 1. Redistributions of source code must reta 14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the 15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must repr 16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the 17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials pro 18 * documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of Volkswagen nor the n 19 * 3. Neither the name of Volkswagen nor the names of its contributors
20 * may be used to endorse or promote produc 20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permissio 21 * without specific prior written permission.
22 * 22 *
23 * Alternatively, provided that this notice is 23 * Alternatively, provided that this notice is retained in full, this
24 * software may be distributed under the terms 24 * software may be distributed under the terms of the GNU General
25 * Public License ("GPL") version 2, in which 25 * Public License ("GPL") version 2, in which case the provisions of the
26 * GPL apply INSTEAD OF those given above. 26 * GPL apply INSTEAD OF those given above.
27 * 27 *
28 * The provided data structures and external i 28 * The provided data structures and external interfaces from this code
29 * are not restricted to be used by modules wi 29 * are not restricted to be used by modules with a GPL compatible license.
30 * 30 *
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTI 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCH 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIR 35 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGE 36 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
37 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
38 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
39 * THEORY OF LIABILITY, WHETHER IN CONTRACT, S 39 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
40 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 40 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
41 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE PO 41 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
42 * DAMAGE. 42 * DAMAGE.
43 */ 43 */
44 44
45 #ifndef _UAPI_CAN_ERROR_H 45 #ifndef _UAPI_CAN_ERROR_H
46 #define _UAPI_CAN_ERROR_H 46 #define _UAPI_CAN_ERROR_H
47 47
48 #define CAN_ERR_DLC 8 /* dlc for error message 48 #define CAN_ERR_DLC 8 /* dlc for error message frames */
49 49
50 /* error class (mask) in can_id */ 50 /* error class (mask) in can_id */
51 #define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX 51 #define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */
52 #define CAN_ERR_LOSTARB 0x00000002U /* lo 52 #define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */
53 #define CAN_ERR_CRTL 0x00000004U /* co 53 #define CAN_ERR_CRTL 0x00000004U /* controller problems / data[1] */
54 #define CAN_ERR_PROT 0x00000008U /* pr 54 #define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */
55 #define CAN_ERR_TRX 0x00000010U /* tr 55 #define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */
56 #define CAN_ERR_ACK 0x00000020U /* re 56 #define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */
57 #define CAN_ERR_BUSOFF 0x00000040U /* bu 57 #define CAN_ERR_BUSOFF 0x00000040U /* bus off */
58 #define CAN_ERR_BUSERROR 0x00000080U /* bu 58 #define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */
59 #define CAN_ERR_RESTARTED 0x00000100U /* co 59 #define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */
60 #define CAN_ERR_CNT 0x00000200U /* TX <<
61 /* RX <<
62 60
63 /* arbitration lost in bit ... / data[0] */ 61 /* arbitration lost in bit ... / data[0] */
64 #define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspe 62 #define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */
65 /* else 63 /* else bit number in bitstream */
66 64
67 /* error status of CAN-controller / data[1] */ 65 /* error status of CAN-controller / data[1] */
68 #define CAN_ERR_CRTL_UNSPEC 0x00 /* unspe 66 #define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */
69 #define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX bu 67 #define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */
70 #define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX bu 68 #define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */
71 #define CAN_ERR_CRTL_RX_WARNING 0x04 /* reach 69 #define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */
72 #define CAN_ERR_CRTL_TX_WARNING 0x08 /* reach 70 #define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */
73 #define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reach 71 #define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */
74 #define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reach 72 #define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */
75 /* (at l 73 /* (at least one error counter exceeds */
76 /* the p 74 /* the protocol-defined level of 127) */
77 #define CAN_ERR_CRTL_ACTIVE 0x40 /* recov 75 #define CAN_ERR_CRTL_ACTIVE 0x40 /* recovered to error active state */
78 76
79 /* error in CAN protocol (type) / data[2] */ 77 /* error in CAN protocol (type) / data[2] */
80 #define CAN_ERR_PROT_UNSPEC 0x00 /* unspe 78 #define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */
81 #define CAN_ERR_PROT_BIT 0x01 /* singl 79 #define CAN_ERR_PROT_BIT 0x01 /* single bit error */
82 #define CAN_ERR_PROT_FORM 0x02 /* frame 80 #define CAN_ERR_PROT_FORM 0x02 /* frame format error */
83 #define CAN_ERR_PROT_STUFF 0x04 /* bit s 81 #define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */
84 #define CAN_ERR_PROT_BIT0 0x08 /* unabl 82 #define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */
85 #define CAN_ERR_PROT_BIT1 0x10 /* unabl 83 #define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */
86 #define CAN_ERR_PROT_OVERLOAD 0x20 /* bus o 84 #define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */
87 #define CAN_ERR_PROT_ACTIVE 0x40 /* activ 85 #define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */
88 #define CAN_ERR_PROT_TX 0x80 /* error 86 #define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */
89 87
90 /* error in CAN protocol (location) / data[3] 88 /* error in CAN protocol (location) / data[3] */
91 #define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspe 89 #define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */
92 #define CAN_ERR_PROT_LOC_SOF 0x03 /* start 90 #define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */
93 #define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bi 91 #define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
94 #define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bi 92 #define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
95 #define CAN_ERR_PROT_LOC_SRTR 0x04 /* subst 93 #define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */
96 #define CAN_ERR_PROT_LOC_IDE 0x05 /* ident 94 #define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */
97 #define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bi 95 #define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */
98 #define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bi 96 #define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */
99 #define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bi 97 #define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */
100 #define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR * 98 #define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */
101 #define CAN_ERR_PROT_LOC_RES1 0x0D /* reser 99 #define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */
102 #define CAN_ERR_PROT_LOC_RES0 0x09 /* reser 100 #define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */
103 #define CAN_ERR_PROT_LOC_DLC 0x0B /* data 101 #define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */
104 #define CAN_ERR_PROT_LOC_DATA 0x0A /* data 102 #define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */
105 #define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC s 103 #define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */
106 #define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC d 104 #define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */
107 #define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK s 105 #define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */
108 #define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK d 106 #define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */
109 #define CAN_ERR_PROT_LOC_EOF 0x1A /* end o 107 #define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */
110 #define CAN_ERR_PROT_LOC_INTERM 0x12 /* inter 108 #define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */
111 109
112 /* error status of CAN-transceiver / data[4] * 110 /* error status of CAN-transceiver / data[4] */
113 /* 111 /* CANH CANL */
114 #define CAN_ERR_TRX_UNSPEC 0x00 /* 112 #define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */
115 #define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 113 #define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */
116 #define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 114 #define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */
117 #define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 115 #define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */
118 #define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 116 #define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */
119 #define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 117 #define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */
120 #define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 118 #define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */
121 #define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 119 #define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */
122 #define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 120 #define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */
123 #define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 121 #define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */
124 122
125 /* data[5] is reserved (do not use) */ !! 123 /* controller specific additional information / data[5..7] */
126 <<
127 /* TX error counter / data[6] */ <<
128 /* RX error counter / data[7] */ <<
129 <<
130 /* CAN state thresholds <<
131 * <<
132 * Error counter Error state <<
133 * ----------------------------------- <<
134 * 0 - 95 Error-active <<
135 * 96 - 127 Error-warning <<
136 * 128 - 255 Error-passive <<
137 * 256 and greater Bus-off <<
138 */ <<
139 #define CAN_ERROR_WARNING_THRESHOLD 96 <<
140 #define CAN_ERROR_PASSIVE_THRESHOLD 128 <<
141 #define CAN_BUS_OFF_THRESHOLD 256 <<
142 124
143 #endif /* _UAPI_CAN_ERROR_H */ 125 #endif /* _UAPI_CAN_ERROR_H */
144 126
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