| /* |
| * linux/can/netlink.h |
| * |
| * Definitions for the CAN netlink interface |
| * |
| * Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com> |
| * |
| * Send feedback to <socketcan-users@lists.berlios.de> |
| * |
| */ |
| |
| #ifndef CAN_NETLINK_H |
| #define CAN_NETLINK_H |
| |
| #include <linux/types.h> |
| |
| /* |
| * CAN bit-timing parameters |
| * |
| * For futher information, please read chapter "8 BIT TIMING |
| * REQUIREMENTS" of the "Bosch CAN Specification version 2.0" |
| * at http://www.semiconductors.bosch.de/pdf/can2spec.pdf. |
| */ |
| struct can_bittiming { |
| __u32 bitrate; /* Bit-rate in bits/second */ |
| __u32 sample_point; /* Sample point in one-tenth of a percent */ |
| __u32 tq; /* Time quanta (TQ) in nanoseconds */ |
| __u32 prop_seg; /* Propagation segment in TQs */ |
| __u32 phase_seg1; /* Phase buffer segment 1 in TQs */ |
| __u32 phase_seg2; /* Phase buffer segment 2 in TQs */ |
| __u32 sjw; /* Synchronisation jump width in TQs */ |
| __u32 brp; /* Bit-rate prescaler */ |
| }; |
| |
| /* |
| * CAN harware-dependent bit-timing constant |
| * |
| * Used for calculating and checking bit-timing parameters |
| */ |
| struct can_bittiming_const { |
| char name[16]; /* Name of the CAN controller hardware */ |
| __u32 tseg1_min; /* Time segement 1 = prop_seg + phase_seg1 */ |
| __u32 tseg1_max; |
| __u32 tseg2_min; /* Time segement 2 = phase_seg2 */ |
| __u32 tseg2_max; |
| __u32 sjw_max; /* Synchronisation jump width */ |
| __u32 brp_min; /* Bit-rate prescaler */ |
| __u32 brp_max; |
| __u32 brp_inc; |
| }; |
| |
| /* |
| * CAN clock parameters |
| */ |
| struct can_clock { |
| __u32 freq; /* CAN system clock frequency in Hz */ |
| }; |
| |
| /* |
| * CAN operational and error states |
| */ |
| enum can_state { |
| CAN_STATE_ERROR_ACTIVE = 0, /* RX/TX error count < 96 */ |
| CAN_STATE_ERROR_WARNING, /* RX/TX error count < 128 */ |
| CAN_STATE_ERROR_PASSIVE, /* RX/TX error count < 256 */ |
| CAN_STATE_BUS_OFF, /* RX/TX error count >= 256 */ |
| CAN_STATE_STOPPED, /* Device is stopped */ |
| CAN_STATE_SLEEPING, /* Device is sleeping */ |
| CAN_STATE_MAX |
| }; |
| |
| /* |
| * CAN controller mode |
| */ |
| struct can_ctrlmode { |
| __u32 mask; |
| __u32 flags; |
| }; |
| |
| #define CAN_CTRLMODE_LOOPBACK 0x1 /* Loopback mode */ |
| #define CAN_CTRLMODE_LISTENONLY 0x2 /* Listen-only mode */ |
| #define CAN_CTRLMODE_3_SAMPLES 0x4 /* Triple sampling mode */ |
| |
| /* |
| * CAN device statistics |
| */ |
| struct can_device_stats { |
| __u32 bus_error; /* Bus errors */ |
| __u32 error_warning; /* Changes to error warning state */ |
| __u32 error_passive; /* Changes to error passive state */ |
| __u32 bus_off; /* Changes to bus off state */ |
| __u32 arbitration_lost; /* Arbitration lost errors */ |
| __u32 restarts; /* CAN controller re-starts */ |
| }; |
| |
| /* |
| * CAN netlink interface |
| */ |
| enum { |
| IFLA_CAN_UNSPEC, |
| IFLA_CAN_BITTIMING, |
| IFLA_CAN_BITTIMING_CONST, |
| IFLA_CAN_CLOCK, |
| IFLA_CAN_STATE, |
| IFLA_CAN_CTRLMODE, |
| IFLA_CAN_RESTART_MS, |
| IFLA_CAN_RESTART, |
| __IFLA_CAN_MAX |
| }; |
| |
| #define IFLA_CAN_MAX (__IFLA_CAN_MAX - 1) |
| |
| #endif /* CAN_NETLINK_H */ |
