/* SPDX-License-Identifier: GPL-2.0-only */ /* * CAN driver for PEAK System micro-CAN based adapters * * Copyright (C) 2003-2011 PEAK System-Technik GmbH * Copyright (C) 2011-2013 Stephane Grosjean <[email protected]> */ #ifndef PUCAN_H #define PUCAN_H /* uCAN commands opcodes list (low-order 10 bits) */ #define PUCAN_CMD_NOP … #define PUCAN_CMD_RESET_MODE … #define PUCAN_CMD_NORMAL_MODE … #define PUCAN_CMD_LISTEN_ONLY_MODE … #define PUCAN_CMD_TIMING_SLOW … #define PUCAN_CMD_TIMING_FAST … #define PUCAN_CMD_SET_STD_FILTER … #define PUCAN_CMD_RESERVED2 … #define PUCAN_CMD_FILTER_STD … #define PUCAN_CMD_TX_ABORT … #define PUCAN_CMD_WR_ERR_CNT … #define PUCAN_CMD_SET_EN_OPTION … #define PUCAN_CMD_CLR_DIS_OPTION … #define PUCAN_CMD_RX_BARRIER … #define PUCAN_CMD_END_OF_COLLECTION … /* uCAN received messages list */ #define PUCAN_MSG_CAN_RX … #define PUCAN_MSG_ERROR … #define PUCAN_MSG_STATUS … #define PUCAN_MSG_BUSLOAD … #define PUCAN_MSG_CACHE_CRITICAL … /* uCAN transmitted messages */ #define PUCAN_MSG_CAN_TX … /* uCAN command common header */ struct __packed pucan_command { … }; /* return the opcode from the opcode_channel field of a command */ static inline u16 pucan_cmd_get_opcode(struct pucan_command *c) { … } #define PUCAN_TSLOW_BRP_BITS … #define PUCAN_TSLOW_TSGEG1_BITS … #define PUCAN_TSLOW_TSGEG2_BITS … #define PUCAN_TSLOW_SJW_BITS … #define PUCAN_TSLOW_BRP_MASK … #define PUCAN_TSLOW_TSEG1_MASK … #define PUCAN_TSLOW_TSEG2_MASK … #define PUCAN_TSLOW_SJW_MASK … /* uCAN TIMING_SLOW command fields */ #define PUCAN_TSLOW_SJW_T(s, t) … #define PUCAN_TSLOW_TSEG2(t) … #define PUCAN_TSLOW_TSEG1(t) … #define PUCAN_TSLOW_BRP(b) … struct __packed pucan_timing_slow { … }; #define PUCAN_TFAST_BRP_BITS … #define PUCAN_TFAST_TSGEG1_BITS … #define PUCAN_TFAST_TSGEG2_BITS … #define PUCAN_TFAST_SJW_BITS … #define PUCAN_TFAST_BRP_MASK … #define PUCAN_TFAST_TSEG1_MASK … #define PUCAN_TFAST_TSEG2_MASK … #define PUCAN_TFAST_SJW_MASK … /* uCAN TIMING_FAST command fields */ #define PUCAN_TFAST_SJW(s) … #define PUCAN_TFAST_TSEG2(t) … #define PUCAN_TFAST_TSEG1(t) … #define PUCAN_TFAST_BRP(b) … struct __packed pucan_timing_fast { … }; /* uCAN FILTER_STD command fields */ #define PUCAN_FLTSTD_ROW_IDX_BITS … struct __packed pucan_filter_std { … }; #define PUCAN_FLTSTD_ROW_IDX_MAX … /* uCAN SET_STD_FILTER command fields */ struct __packed pucan_std_filter { … }; /* uCAN TX_ABORT commands fields */ #define PUCAN_TX_ABORT_FLUSH … struct __packed pucan_tx_abort { … }; /* uCAN WR_ERR_CNT command fields */ #define PUCAN_WRERRCNT_TE … #define PUCAN_WRERRCNT_RE … struct __packed pucan_wr_err_cnt { … }; /* uCAN SET_EN/CLR_DIS _OPTION command fields */ #define PUCAN_OPTION_ERROR … #define PUCAN_OPTION_BUSLOAD … #define PUCAN_OPTION_CANDFDISO … struct __packed pucan_options { … }; /* uCAN received messages global format */ struct __packed pucan_msg { … }; /* uCAN flags for CAN/CANFD messages */ #define PUCAN_MSG_SELF_RECEIVE … #define PUCAN_MSG_ERROR_STATE_IND … #define PUCAN_MSG_BITRATE_SWITCH … #define PUCAN_MSG_EXT_DATA_LEN … #define PUCAN_MSG_SINGLE_SHOT … #define PUCAN_MSG_LOOPED_BACK … #define PUCAN_MSG_EXT_ID … #define PUCAN_MSG_RTR … struct __packed pucan_rx_msg { … }; /* uCAN error types */ #define PUCAN_ERMSG_BIT_ERROR … #define PUCAN_ERMSG_FORM_ERROR … #define PUCAN_ERMSG_STUFF_ERROR … #define PUCAN_ERMSG_OTHER_ERROR … #define PUCAN_ERMSG_ERR_CNT_DEC … struct __packed pucan_error_msg { … }; static inline int pucan_error_get_channel(const struct pucan_error_msg *msg) { … } #define PUCAN_RX_BARRIER … #define PUCAN_BUS_PASSIVE … #define PUCAN_BUS_WARNING … #define PUCAN_BUS_BUSOFF … struct __packed pucan_status_msg { … }; static inline int pucan_status_get_channel(const struct pucan_status_msg *msg) { … } static inline int pucan_status_is_rx_barrier(const struct pucan_status_msg *msg) { … } static inline int pucan_status_is_passive(const struct pucan_status_msg *msg) { … } static inline int pucan_status_is_warning(const struct pucan_status_msg *msg) { … } static inline int pucan_status_is_busoff(const struct pucan_status_msg *msg) { … } /* uCAN transmitted message format */ #define PUCAN_MSG_CHANNEL_DLC(c, d) … struct __packed pucan_tx_msg { … }; /* build the cmd opcode_channel field with respect to the correct endianness */ static inline __le16 pucan_cmd_opcode_channel(int index, int opcode) { … } /* return the channel number part from any received message channel_dlc field */ static inline int pucan_msg_get_channel(const struct pucan_rx_msg *msg) { … } /* return the dlc value from any received message channel_dlc field */ static inline u8 pucan_msg_get_dlc(const struct pucan_rx_msg *msg) { … } static inline int pucan_ermsg_get_channel(const struct pucan_error_msg *msg) { … } static inline int pucan_stmsg_get_channel(const struct pucan_status_msg *msg) { … } #endif
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