/* Driver for ETAS GmbH ES58X USB CAN(-FD) Bus Interfaces. * * File es581_4.h: Definitions and declarations specific to ETAS * ES581.4. * * Copyright (c) 2019 Robert Bosch Engineering and Business Solutions. All rights reserved. * Copyright (c) 2020 ETAS K.K.. All rights reserved. * Copyright (c) 2020, 2021 Vincent Mailhol <mailhol.vincent@wanadoo.fr>
*/
/** * struct es581_4_tx_conf_msg - Channel configuration. * @bitrate: Bitrate. * @sample_point: Sample point is in percent [0..100]. * @samples_per_bit: type enum es58x_samples_per_bit. * @bit_time: Number of time quanta in one bit. * @sjw: Synchronization Jump Width. * @sync_edge: type enum es58x_sync_edge. * @physical_layer: type enum es58x_physical_layer. * @echo_mode: type enum es58x_echo_mode. * @channel_no: Channel number, starting from 1. Not to be confused * with channed_idx of the ES58X FD which starts from 0.
*/ struct es581_4_tx_conf_msg {
__le32 bitrate;
__le32 sample_point;
__le32 samples_per_bit;
__le32 bit_time;
__le32 sjw;
__le32 sync_edge;
__le32 physical_layer;
__le32 echo_mode;
u8 channel_no;
} __packed;
/* The ES581.4 allows bulk transfer. */ struct es581_4_bulk_tx_can_msg {
u8 num_can_msg; /* Using type "u8[]" instead of "struct es581_4_tx_can_msg[]" * for tx_msg_buf because each member has a flexible size.
*/
u8 tx_can_msg_buf[ES581_4_TX_BULK_MAX * sizeof(struct es581_4_tx_can_msg)];
} __packed;
/* Normal Rx CAN Message */ struct es581_4_rx_can_msg {
__le64 timestamp;
u8 rx_type; /* type enum es581_4_rx_type */
u8 flags; /* type enum es58x_flag */
u8 channel_no;
u8 dlc;
__le32 can_id;
u8 data[CAN_MAX_DLEN];
} __packed;
struct es581_4_rx_err_msg {
__le64 timestamp;
__le16 rx_type; /* type enum es581_4_rx_type */
__le16 flags; /* type enum es58x_flag */
u8 channel_no;
u8 __padding[2];
u8 dlc;
__le32 tag; /* Related to the CAN filtering. Unused in this module */
__le32 can_id;
__le32 error; /* type enum es58x_error */
__le32 destination; /* Unused in this module */
} __packed;
struct es581_4_rx_event_msg {
__le64 timestamp;
__le16 rx_type; /* type enum es581_4_rx_type */
u8 channel_no;
u8 __padding;
__le32 tag; /* Related to the CAN filtering. Unused in this module */
__le32 event; /* type enum es58x_event */
__le32 destination; /* Unused in this module */
} __packed;
struct es581_4_tx_ack_msg {
__le16 tx_free_entries; /* Number of remaining free entries in the device TX queue */
u8 channel_no;
u8 rx_cmd_ret_u8; /* type enum es58x_cmd_ret_code_u8 */
} __packed;
/** * struct es581_4_urb_cmd - Commands received from or sent to the * ES581.4 device. * @SOF: Start of Frame. * @cmd_type: Command Type (type: enum es581_4_cmd_type). The CRC * calculation starts at this position. * @cmd_id: Command ID (type: enum es581_4_cmd_id). * @msg_len: Length of the message, excluding CRC (i.e. length of the * union). * @tx_conf_msg: Channel configuration. * @bulk_tx_can_msg: Tx messages. * @rx_can_msg: Array of Rx messages. * @bulk_echo_msg: Tx message being looped back. * @rx_err_msg: Error message. * @rx_event_msg: Event message. * @tx_ack_msg: Tx acknowledgment message. * @rx_cmd_ret: Command return code. * @timestamp: Timestamp reply. * @rx_cmd_ret_u8: Rx 8 bits return code (type: enum * es58x_cmd_ret_code_u8). * @raw_msg: Message raw payload. * @reserved_for_crc16_do_not_use: The structure ends with a * CRC16. Because the structures in above union are of variable * lengths, we can not predict the offset of the CRC in * advance. Use functions es58x_get_crc() and es58x_set_crc() to * manipulate it.
*/ struct es581_4_urb_cmd {
__le16 SOF;
u8 cmd_type;
u8 cmd_id;
__le16 msg_len;
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