1 /* SPDX-License-Identifier: GPL-2.0-only WITH <<
2 /* 1 /*
3 * linux/can/netlink.h 2 * linux/can/netlink.h
4 * 3 *
5 * Definitions for the CAN netlink interface 4 * Definitions for the CAN netlink interface
6 * 5 *
7 * Copyright (c) 2009 Wolfgang Grandegger <wg@ 6 * Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com>
8 * 7 *
9 * This program is free software; you can redi 8 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the version 2 of the 9 * it under the terms of the version 2 of the GNU General Public License
11 * as published by the Free Software Foundatio 10 * as published by the Free Software Foundation
12 * 11 *
13 * This program is distributed in the hope tha 12 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details 15 * GNU General Public License for more details.
17 */ 16 */
18 17
19 #ifndef _UAPI_CAN_NETLINK_H 18 #ifndef _UAPI_CAN_NETLINK_H
20 #define _UAPI_CAN_NETLINK_H 19 #define _UAPI_CAN_NETLINK_H
21 20
22 #include <linux/types.h> 21 #include <linux/types.h>
23 22
24 /* 23 /*
25 * CAN bit-timing parameters 24 * CAN bit-timing parameters
26 * 25 *
27 * For further information, please read chapte 26 * For further information, please read chapter "8 BIT TIMING
28 * REQUIREMENTS" of the "Bosch CAN Specificati 27 * REQUIREMENTS" of the "Bosch CAN Specification version 2.0"
29 * at http://www.semiconductors.bosch.de/pdf/c 28 * at http://www.semiconductors.bosch.de/pdf/can2spec.pdf.
30 */ 29 */
31 struct can_bittiming { 30 struct can_bittiming {
32 __u32 bitrate; /* Bit-rate in 31 __u32 bitrate; /* Bit-rate in bits/second */
33 __u32 sample_point; /* Sample poin 32 __u32 sample_point; /* Sample point in one-tenth of a percent */
34 __u32 tq; /* Time quanta 33 __u32 tq; /* Time quanta (TQ) in nanoseconds */
35 __u32 prop_seg; /* Propagation 34 __u32 prop_seg; /* Propagation segment in TQs */
36 __u32 phase_seg1; /* Phase buffe 35 __u32 phase_seg1; /* Phase buffer segment 1 in TQs */
37 __u32 phase_seg2; /* Phase buffe 36 __u32 phase_seg2; /* Phase buffer segment 2 in TQs */
38 __u32 sjw; /* Synchronisa 37 __u32 sjw; /* Synchronisation jump width in TQs */
39 __u32 brp; /* Bit-rate pr 38 __u32 brp; /* Bit-rate prescaler */
40 }; 39 };
41 40
42 /* 41 /*
43 * CAN hardware-dependent bit-timing constant !! 42 * CAN harware-dependent bit-timing constant
44 * 43 *
45 * Used for calculating and checking bit-timin 44 * Used for calculating and checking bit-timing parameters
46 */ 45 */
47 struct can_bittiming_const { 46 struct can_bittiming_const {
48 char name[16]; /* Name of the 47 char name[16]; /* Name of the CAN controller hardware */
49 __u32 tseg1_min; /* Time segmen !! 48 __u32 tseg1_min; /* Time segement 1 = prop_seg + phase_seg1 */
50 __u32 tseg1_max; 49 __u32 tseg1_max;
51 __u32 tseg2_min; /* Time segmen !! 50 __u32 tseg2_min; /* Time segement 2 = phase_seg2 */
52 __u32 tseg2_max; 51 __u32 tseg2_max;
53 __u32 sjw_max; /* Synchronisa 52 __u32 sjw_max; /* Synchronisation jump width */
54 __u32 brp_min; /* Bit-rate pr 53 __u32 brp_min; /* Bit-rate prescaler */
55 __u32 brp_max; 54 __u32 brp_max;
56 __u32 brp_inc; 55 __u32 brp_inc;
57 }; 56 };
58 57
59 /* 58 /*
60 * CAN clock parameters 59 * CAN clock parameters
61 */ 60 */
62 struct can_clock { 61 struct can_clock {
63 __u32 freq; /* CAN system 62 __u32 freq; /* CAN system clock frequency in Hz */
64 }; 63 };
65 64
66 /* 65 /*
67 * CAN operational and error states 66 * CAN operational and error states
68 */ 67 */
69 enum can_state { 68 enum can_state {
70 CAN_STATE_ERROR_ACTIVE = 0, /* RX/ 69 CAN_STATE_ERROR_ACTIVE = 0, /* RX/TX error count < 96 */
71 CAN_STATE_ERROR_WARNING, /* RX/ 70 CAN_STATE_ERROR_WARNING, /* RX/TX error count < 128 */
72 CAN_STATE_ERROR_PASSIVE, /* RX/ 71 CAN_STATE_ERROR_PASSIVE, /* RX/TX error count < 256 */
73 CAN_STATE_BUS_OFF, /* RX/ 72 CAN_STATE_BUS_OFF, /* RX/TX error count >= 256 */
74 CAN_STATE_STOPPED, /* Dev 73 CAN_STATE_STOPPED, /* Device is stopped */
75 CAN_STATE_SLEEPING, /* Dev 74 CAN_STATE_SLEEPING, /* Device is sleeping */
76 CAN_STATE_MAX 75 CAN_STATE_MAX
77 }; 76 };
78 77
79 /* 78 /*
80 * CAN bus error counters 79 * CAN bus error counters
81 */ 80 */
82 struct can_berr_counter { 81 struct can_berr_counter {
83 __u16 txerr; 82 __u16 txerr;
84 __u16 rxerr; 83 __u16 rxerr;
85 }; 84 };
86 85
87 /* 86 /*
88 * CAN controller mode 87 * CAN controller mode
89 */ 88 */
90 struct can_ctrlmode { 89 struct can_ctrlmode {
91 __u32 mask; 90 __u32 mask;
92 __u32 flags; 91 __u32 flags;
93 }; 92 };
94 93
95 #define CAN_CTRLMODE_LOOPBACK 0x01 94 #define CAN_CTRLMODE_LOOPBACK 0x01 /* Loopback mode */
96 #define CAN_CTRLMODE_LISTENONLY 0x02 95 #define CAN_CTRLMODE_LISTENONLY 0x02 /* Listen-only mode */
97 #define CAN_CTRLMODE_3_SAMPLES 0x04 96 #define CAN_CTRLMODE_3_SAMPLES 0x04 /* Triple sampling mode */
98 #define CAN_CTRLMODE_ONE_SHOT 0x08 97 #define CAN_CTRLMODE_ONE_SHOT 0x08 /* One-Shot mode */
99 #define CAN_CTRLMODE_BERR_REPORTING 0x10 98 #define CAN_CTRLMODE_BERR_REPORTING 0x10 /* Bus-error reporting */
100 #define CAN_CTRLMODE_FD 0x20 99 #define CAN_CTRLMODE_FD 0x20 /* CAN FD mode */
101 #define CAN_CTRLMODE_PRESUME_ACK 0x40 100 #define CAN_CTRLMODE_PRESUME_ACK 0x40 /* Ignore missing CAN ACKs */
102 #define CAN_CTRLMODE_FD_NON_ISO 0x80 101 #define CAN_CTRLMODE_FD_NON_ISO 0x80 /* CAN FD in non-ISO mode */
103 #define CAN_CTRLMODE_CC_LEN8_DLC 0x100 <<
104 #define CAN_CTRLMODE_TDC_AUTO 0x200 <<
105 #define CAN_CTRLMODE_TDC_MANUAL 0x400 <<
106 102
107 /* 103 /*
108 * CAN device statistics 104 * CAN device statistics
109 */ 105 */
110 struct can_device_stats { 106 struct can_device_stats {
111 __u32 bus_error; /* Bus errors 107 __u32 bus_error; /* Bus errors */
112 __u32 error_warning; /* Changes to 108 __u32 error_warning; /* Changes to error warning state */
113 __u32 error_passive; /* Changes to 109 __u32 error_passive; /* Changes to error passive state */
114 __u32 bus_off; /* Changes to 110 __u32 bus_off; /* Changes to bus off state */
115 __u32 arbitration_lost; /* Arbitration 111 __u32 arbitration_lost; /* Arbitration lost errors */
116 __u32 restarts; /* CAN control 112 __u32 restarts; /* CAN controller re-starts */
117 }; 113 };
118 114
119 /* 115 /*
120 * CAN netlink interface 116 * CAN netlink interface
121 */ 117 */
122 enum { 118 enum {
123 IFLA_CAN_UNSPEC, 119 IFLA_CAN_UNSPEC,
124 IFLA_CAN_BITTIMING, 120 IFLA_CAN_BITTIMING,
125 IFLA_CAN_BITTIMING_CONST, 121 IFLA_CAN_BITTIMING_CONST,
126 IFLA_CAN_CLOCK, 122 IFLA_CAN_CLOCK,
127 IFLA_CAN_STATE, 123 IFLA_CAN_STATE,
128 IFLA_CAN_CTRLMODE, 124 IFLA_CAN_CTRLMODE,
129 IFLA_CAN_RESTART_MS, 125 IFLA_CAN_RESTART_MS,
130 IFLA_CAN_RESTART, 126 IFLA_CAN_RESTART,
131 IFLA_CAN_BERR_COUNTER, 127 IFLA_CAN_BERR_COUNTER,
132 IFLA_CAN_DATA_BITTIMING, 128 IFLA_CAN_DATA_BITTIMING,
133 IFLA_CAN_DATA_BITTIMING_CONST, 129 IFLA_CAN_DATA_BITTIMING_CONST,
134 IFLA_CAN_TERMINATION, 130 IFLA_CAN_TERMINATION,
135 IFLA_CAN_TERMINATION_CONST, 131 IFLA_CAN_TERMINATION_CONST,
136 IFLA_CAN_BITRATE_CONST, 132 IFLA_CAN_BITRATE_CONST,
137 IFLA_CAN_DATA_BITRATE_CONST, 133 IFLA_CAN_DATA_BITRATE_CONST,
138 IFLA_CAN_BITRATE_MAX, !! 134 __IFLA_CAN_MAX
139 IFLA_CAN_TDC, <<
140 IFLA_CAN_CTRLMODE_EXT, <<
141 <<
142 /* add new constants above here */ <<
143 __IFLA_CAN_MAX, <<
144 IFLA_CAN_MAX = __IFLA_CAN_MAX - 1 <<
145 }; <<
146 <<
147 /* <<
148 * CAN FD Transmitter Delay Compensation (TDC) <<
149 * <<
150 * Please refer to struct can_tdc_const and ca <<
151 * include/linux/can/bittiming.h for further d <<
152 */ <<
153 enum { <<
154 IFLA_CAN_TDC_UNSPEC, <<
155 IFLA_CAN_TDC_TDCV_MIN, /* u32 */ <<
156 IFLA_CAN_TDC_TDCV_MAX, /* u32 */ <<
157 IFLA_CAN_TDC_TDCO_MIN, /* u32 */ <<
158 IFLA_CAN_TDC_TDCO_MAX, /* u32 */ <<
159 IFLA_CAN_TDC_TDCF_MIN, /* u32 */ <<
160 IFLA_CAN_TDC_TDCF_MAX, /* u32 */ <<
161 IFLA_CAN_TDC_TDCV, /* u32 */ <<
162 IFLA_CAN_TDC_TDCO, /* u32 */ <<
163 IFLA_CAN_TDC_TDCF, /* u32 */ <<
164 <<
165 /* add new constants above here */ <<
166 __IFLA_CAN_TDC, <<
167 IFLA_CAN_TDC_MAX = __IFLA_CAN_TDC - 1 <<
168 }; 135 };
169 136
170 /* !! 137 #define IFLA_CAN_MAX (__IFLA_CAN_MAX - 1)
171 * IFLA_CAN_CTRLMODE_EXT nest: controller mode <<
172 */ <<
173 enum { <<
174 IFLA_CAN_CTRLMODE_UNSPEC, <<
175 IFLA_CAN_CTRLMODE_SUPPORTED, /* u32 <<
176 <<
177 /* add new constants above here */ <<
178 __IFLA_CAN_CTRLMODE, <<
179 IFLA_CAN_CTRLMODE_MAX = __IFLA_CAN_CTR <<
180 }; <<
181 138
182 /* u16 termination range: 1..65535 Ohms */ 139 /* u16 termination range: 1..65535 Ohms */
183 #define CAN_TERMINATION_DISABLED 0 140 #define CAN_TERMINATION_DISABLED 0
184 141
185 #endif /* !_UAPI_CAN_NETLINK_H */ 142 #endif /* !_UAPI_CAN_NETLINK_H */
186 143
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