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01: /*
02:  * linux/can/error.h
03:  *
04:  * Definitions of the CAN error frame to be filtered and passed to the user.
05:  *
06:  * Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
07:  * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
08:  * All rights reserved.
09:  *
10:  */
11: 
12: #ifndef CAN_ERROR_H
13: #define CAN_ERROR_H
14: 
15: #define CAN_ERR_DLC 8 /* dlc for error frames */
16: 
17: /* error class (mask) in can_id */
18: #define CAN_ERR_TX_TIMEOUT   0x00000001U /* TX timeout (by netdevice driver) */
19: #define CAN_ERR_LOSTARB      0x00000002U /* lost arbitration    / data[0]    */
20: #define CAN_ERR_CRTL         0x00000004U /* controller problems / data[1]    */
21: #define CAN_ERR_PROT         0x00000008U /* protocol violations / data[2..3] */
22: #define CAN_ERR_TRX          0x00000010U /* transceiver status  / data[4]    */
23: #define CAN_ERR_ACK          0x00000020U /* received no ACK on transmission */
24: #define CAN_ERR_BUSOFF       0x00000040U /* bus off */
25: #define CAN_ERR_BUSERROR     0x00000080U /* bus error (may flood!) */
26: #define CAN_ERR_RESTARTED    0x00000100U /* controller restarted */
27: 
28: /* arbitration lost in bit ... / data[0] */
29: #define CAN_ERR_LOSTARB_UNSPEC   0x00 /* unspecified */
30:                                       /* else bit number in bitstream */
31: 
32: /* error status of CAN-controller / data[1] */
33: #define CAN_ERR_CRTL_UNSPEC      0x00 /* unspecified */
34: #define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */
35: #define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */
36: #define CAN_ERR_CRTL_RX_WARNING  0x04 /* reached warning level for RX errors */
37: #define CAN_ERR_CRTL_TX_WARNING  0x08 /* reached warning level for TX errors */
38: #define CAN_ERR_CRTL_RX_PASSIVE  0x10 /* reached error passive status RX */
39: #define CAN_ERR_CRTL_TX_PASSIVE  0x20 /* reached error passive status TX */
40:                                       /* (at least one error counter exceeds */
41:                                       /* the protocol-defined level of 127)  */
42: 
43: /* error in CAN protocol (type) / data[2] */
44: #define CAN_ERR_PROT_UNSPEC      0x00 /* unspecified */
45: #define CAN_ERR_PROT_BIT         0x01 /* single bit error */
46: #define CAN_ERR_PROT_FORM        0x02 /* frame format error */
47: #define CAN_ERR_PROT_STUFF       0x04 /* bit stuffing error */
48: #define CAN_ERR_PROT_BIT0        0x08 /* unable to send dominant bit */
49: #define CAN_ERR_PROT_BIT1        0x10 /* unable to send recessive bit */
50: #define CAN_ERR_PROT_OVERLOAD    0x20 /* bus overload */
51: #define CAN_ERR_PROT_ACTIVE      0x40 /* active error announcement */
52: #define CAN_ERR_PROT_TX          0x80 /* error occurred on transmission */
53: 
54: /* error in CAN protocol (location) / data[3] */
55: #define CAN_ERR_PROT_LOC_UNSPEC  0x00 /* unspecified */
56: #define CAN_ERR_PROT_LOC_SOF     0x03 /* start of frame */
57: #define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
58: #define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
59: #define CAN_ERR_PROT_LOC_SRTR    0x04 /* substitute RTR (SFF: RTR) */
60: #define CAN_ERR_PROT_LOC_IDE     0x05 /* identifier extension */
61: #define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */
62: #define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */
63: #define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */
64: #define CAN_ERR_PROT_LOC_RTR     0x0C /* RTR */
65: #define CAN_ERR_PROT_LOC_RES1    0x0D /* reserved bit 1 */
66: #define CAN_ERR_PROT_LOC_RES0    0x09 /* reserved bit 0 */
67: #define CAN_ERR_PROT_LOC_DLC     0x0B /* data length code */
68: #define CAN_ERR_PROT_LOC_DATA    0x0A /* data section */
69: #define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */
70: #define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */
71: #define CAN_ERR_PROT_LOC_ACK     0x19 /* ACK slot */
72: #define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */
73: #define CAN_ERR_PROT_LOC_EOF     0x1A /* end of frame */
74: #define CAN_ERR_PROT_LOC_INTERM  0x12 /* intermission */
75: 
76: /* error status of CAN-transceiver / data[4] */
77: /*                                             CANH CANL */
78: #define CAN_ERR_TRX_UNSPEC             0x00 /* 0000 0000 */
79: #define CAN_ERR_TRX_CANH_NO_WIRE       0x04 /* 0000 0100 */
80: #define CAN_ERR_TRX_CANH_SHORT_TO_BAT  0x05 /* 0000 0101 */
81: #define CAN_ERR_TRX_CANH_SHORT_TO_VCC  0x06 /* 0000 0110 */
82: #define CAN_ERR_TRX_CANH_SHORT_TO_GND  0x07 /* 0000 0111 */
83: #define CAN_ERR_TRX_CANL_NO_WIRE       0x40 /* 0100 0000 */
84: #define CAN_ERR_TRX_CANL_SHORT_TO_BAT  0x50 /* 0101 0000 */
85: #define CAN_ERR_TRX_CANL_SHORT_TO_VCC  0x60 /* 0110 0000 */
86: #define CAN_ERR_TRX_CANL_SHORT_TO_GND  0x70 /* 0111 0000 */
87: #define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */
88: 
89: /* controller specific additional information / data[5..7] */
90: 
91: #endif /* CAN_ERROR_H */
92: 

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