100 lines
1.6 KiB
C
100 lines
1.6 KiB
C
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/*
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* socketcan/can/ioctl.h
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*
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* Definitions for CAN controller setup (work in progress)
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*
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* $Id$
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*
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* Send feedback to <linux-can@vger.kernel.org>
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*
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*/
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#ifndef CAN_IOCTL_H
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#define CAN_IOCTL_H
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#include <linux/sockios.h>
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/*
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* CAN bitrate
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*/
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#define CAN_BITRATE_UNCONFIGURED ((__u32) 0xFFFFFFFFU)
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#define CAN_BITRATE_UNKNOWN 0
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#define CAN_BITRATE_DEFAULT 500000
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/*
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* CAN custom bit time
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*/
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enum can_bittimes {
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CAN_BITTIME_STD,
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CAN_BITTIME_BTR
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};
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/* TSEG1 of controllers usually is a sum of synch_seg (always 1),
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* prop_seg and phase_seg1, TSEG2 = phase_seg2 */
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struct can_bittime_std {
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__u32 brp; /* baud rate prescaler */
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__u8 prop_seg; /* from 1 to 8 */
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__u8 phase_seg1; /* from 1 to 8 */
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__u8 phase_seg2; /* from 1 to 8 */
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__u8 sjw:7; /* from 1 to 4 */
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__u8 sam:1; /* 1 - enable triple sampling */
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};
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struct can_bittime_btr {
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__u8 btr0;
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__u8 btr1;
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};
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struct can_bittime {
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enum can_bittimes type;
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union {
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struct can_bittime_std std;
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struct can_bittime_btr btr;
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};
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};
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/*
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* CAN mode
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*/
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enum can_mode {
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CAN_MODE_STOP = 0,
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CAN_MODE_START,
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CAN_MODE_SLEEP
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};
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/*
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* CAN controller mode
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*/
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#define CAN_CTRLMODE_LOOPBACK 0x1
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#define CAN_CTRLMODE_LISTENONLY 0x2
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/*
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* CAN operational and error states
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*/
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enum can_state {
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CAN_STATE_ACTIVE = 0,
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CAN_STATE_BUS_WARNING,
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CAN_STATE_BUS_PASSIVE,
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CAN_STATE_BUS_OFF,
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CAN_STATE_STOPPED,
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CAN_STATE_SLEEPING
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};
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/*
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* CAN device statistics
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*/
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struct can_device_stats {
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int error_warning;
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int data_overrun;
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int wakeup;
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int bus_error;
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int error_passive;
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int arbitration_lost;
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int restarts;
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int bus_error_at_init;
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};
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#endif /* CAN_IOCTL_H */
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