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-rw-r--r--include/linux/can/Kbuild1
-rw-r--r--include/linux/can/dev.h70
-rw-r--r--include/linux/can/netlink.h113
-rw-r--r--include/linux/can/platform/sja1000.h35
4 files changed, 219 insertions, 0 deletions
diff --git a/include/linux/can/Kbuild b/include/linux/can/Kbuild
index eff898aac02b..8cb05aae661c 100644
--- a/include/linux/can/Kbuild
+++ b/include/linux/can/Kbuild
@@ -1,3 +1,4 @@
1header-y += raw.h 1header-y += raw.h
2header-y += bcm.h 2header-y += bcm.h
3header-y += error.h 3header-y += error.h
4header-y += netlink.h
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
new file mode 100644
index 000000000000..4a37a56f6cdd
--- /dev/null
+++ b/include/linux/can/dev.h
@@ -0,0 +1,70 @@
1/*
2 * linux/can/dev.h
3 *
4 * Definitions for the CAN network device driver interface
5 *
6 * Copyright (C) 2006 Andrey Volkov <avolkov@varma-el.com>
7 * Varma Electronics Oy
8 *
9 * Copyright (C) 2008 Wolfgang Grandegger <wg@grandegger.com>
10 *
11 * Send feedback to <socketcan-users@lists.berlios.de>
12 */
13
14#ifndef CAN_DEV_H
15#define CAN_DEV_H
16
17#include <linux/can/netlink.h>
18#include <linux/can/error.h>
19
20/*
21 * CAN mode
22 */
23enum can_mode {
24 CAN_MODE_STOP = 0,
25 CAN_MODE_START,
26 CAN_MODE_SLEEP
27};
28
29/*
30 * CAN common private data
31 */
32#define CAN_ECHO_SKB_MAX 4
33
34struct can_priv {
35 struct can_device_stats can_stats;
36
37 struct can_bittiming bittiming;
38 struct can_bittiming_const *bittiming_const;
39 struct can_clock clock;
40
41 enum can_state state;
42 u32 ctrlmode;
43
44 int restart_ms;
45 struct timer_list restart_timer;
46
47 struct sk_buff *echo_skb[CAN_ECHO_SKB_MAX];
48
49 int (*do_set_bittiming)(struct net_device *dev);
50 int (*do_set_mode)(struct net_device *dev, enum can_mode mode);
51 int (*do_get_state)(const struct net_device *dev,
52 enum can_state *state);
53};
54
55struct net_device *alloc_candev(int sizeof_priv);
56void free_candev(struct net_device *dev);
57
58int open_candev(struct net_device *dev);
59void close_candev(struct net_device *dev);
60
61int register_candev(struct net_device *dev);
62void unregister_candev(struct net_device *dev);
63
64int can_restart_now(struct net_device *dev);
65void can_bus_off(struct net_device *dev);
66
67void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, int idx);
68void can_get_echo_skb(struct net_device *dev, int idx);
69
70#endif /* CAN_DEV_H */
diff --git a/include/linux/can/netlink.h b/include/linux/can/netlink.h
new file mode 100644
index 000000000000..9ecbb7871c0e
--- /dev/null
+++ b/include/linux/can/netlink.h
@@ -0,0 +1,113 @@
1/*
2 * linux/can/netlink.h
3 *
4 * Definitions for the CAN netlink interface
5 *
6 * Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com>
7 *
8 * Send feedback to <socketcan-users@lists.berlios.de>
9 *
10 */
11
12#ifndef CAN_NETLINK_H
13#define CAN_NETLINK_H
14
15#include <linux/types.h>
16
17/*
18 * CAN bit-timing parameters
19 *
20 * For futher information, please read chapter "8 BIT TIMING
21 * REQUIREMENTS" of the "Bosch CAN Specification version 2.0"
22 * at http://www.semiconductors.bosch.de/pdf/can2spec.pdf.
23 */
24struct can_bittiming {
25 __u32 bitrate; /* Bit-rate in bits/second */
26 __u32 sample_point; /* Sample point in one-tenth of a percent */
27 __u32 tq; /* Time quanta (TQ) in nanoseconds */
28 __u32 prop_seg; /* Propagation segment in TQs */
29 __u32 phase_seg1; /* Phase buffer segment 1 in TQs */
30 __u32 phase_seg2; /* Phase buffer segment 2 in TQs */
31 __u32 sjw; /* Synchronisation jump width in TQs */
32 __u32 brp; /* Bit-rate prescaler */
33};
34
35/*
36 * CAN harware-dependent bit-timing constant
37 *
38 * Used for calculating and checking bit-timing parameters
39 */
40struct can_bittiming_const {
41 char name[16]; /* Name of the CAN controller hardware */
42 __u32 tseg1_min; /* Time segement 1 = prop_seg + phase_seg1 */
43 __u32 tseg1_max;
44 __u32 tseg2_min; /* Time segement 2 = phase_seg2 */
45 __u32 tseg2_max;
46 __u32 sjw_max; /* Synchronisation jump width */
47 __u32 brp_min; /* Bit-rate prescaler */
48 __u32 brp_max;
49 __u32 brp_inc;
50};
51
52/*
53 * CAN clock parameters
54 */
55struct can_clock {
56 __u32 freq; /* CAN system clock frequency in Hz */
57};
58
59/*
60 * CAN operational and error states
61 */
62enum can_state {
63 CAN_STATE_ERROR_ACTIVE = 0, /* RX/TX error count < 96 */
64 CAN_STATE_ERROR_WARNING, /* RX/TX error count < 128 */
65 CAN_STATE_ERROR_PASSIVE, /* RX/TX error count < 256 */
66 CAN_STATE_BUS_OFF, /* RX/TX error count >= 256 */
67 CAN_STATE_STOPPED, /* Device is stopped */
68 CAN_STATE_SLEEPING, /* Device is sleeping */
69 CAN_STATE_MAX
70};
71
72/*
73 * CAN controller mode
74 */
75struct can_ctrlmode {
76 __u32 mask;
77 __u32 flags;
78};
79
80#define CAN_CTRLMODE_LOOPBACK 0x1 /* Loopback mode */
81#define CAN_CTRLMODE_LISTENONLY 0x2 /* Listen-only mode */
82#define CAN_CTRLMODE_3_SAMPLES 0x4 /* Triple sampling mode */
83
84/*
85 * CAN device statistics
86 */
87struct can_device_stats {
88 __u32 bus_error; /* Bus errors */
89 __u32 error_warning; /* Changes to error warning state */
90 __u32 error_passive; /* Changes to error passive state */
91 __u32 bus_off; /* Changes to bus off state */
92 __u32 arbitration_lost; /* Arbitration lost errors */
93 __u32 restarts; /* CAN controller re-starts */
94};
95
96/*
97 * CAN netlink interface
98 */
99enum {
100 IFLA_CAN_UNSPEC,
101 IFLA_CAN_BITTIMING,
102 IFLA_CAN_BITTIMING_CONST,
103 IFLA_CAN_CLOCK,
104 IFLA_CAN_STATE,
105 IFLA_CAN_CTRLMODE,
106 IFLA_CAN_RESTART_MS,
107 IFLA_CAN_RESTART,
108 __IFLA_CAN_MAX
109};
110
111#define IFLA_CAN_MAX (__IFLA_CAN_MAX - 1)
112
113#endif /* CAN_NETLINK_H */
diff --git a/include/linux/can/platform/sja1000.h b/include/linux/can/platform/sja1000.h
new file mode 100644
index 000000000000..01ee2aeb048d
--- /dev/null
+++ b/include/linux/can/platform/sja1000.h
@@ -0,0 +1,35 @@
1#ifndef _CAN_PLATFORM_SJA1000_H_
2#define _CAN_PLATFORM_SJA1000_H_
3
4/* clock divider register */
5#define CDR_CLKOUT_MASK 0x07
6#define CDR_CLK_OFF 0x08 /* Clock off (CLKOUT pin) */
7#define CDR_RXINPEN 0x20 /* TX1 output is RX irq output */
8#define CDR_CBP 0x40 /* CAN input comparator bypass */
9#define CDR_PELICAN 0x80 /* PeliCAN mode */
10
11/* output control register */
12#define OCR_MODE_BIPHASE 0x00
13#define OCR_MODE_TEST 0x01
14#define OCR_MODE_NORMAL 0x02
15#define OCR_MODE_CLOCK 0x03
16#define OCR_MODE_MASK 0x07
17#define OCR_TX0_INVERT 0x04
18#define OCR_TX0_PULLDOWN 0x08
19#define OCR_TX0_PULLUP 0x10
20#define OCR_TX0_PUSHPULL 0x18
21#define OCR_TX1_INVERT 0x20
22#define OCR_TX1_PULLDOWN 0x40
23#define OCR_TX1_PULLUP 0x80
24#define OCR_TX1_PUSHPULL 0xc0
25#define OCR_TX_MASK 0xfc
26#define OCR_TX_SHIFT 2
27
28struct sja1000_platform_data {
29 u32 clock; /* CAN bus oscillator frequency in Hz */
30
31 u8 ocr; /* output control register */
32 u8 cdr; /* clock divider register */
33};
34
35#endif /* !_CAN_PLATFORM_SJA1000_H_ */
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-10 23:39:26 -0500