1 /* $NetBSD: if_gscanreg.h,v 1.1 2025/04/03 16:33:48 bouyer Exp $ */ 2 3 /* 4 * Copyright (c) 2025 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Manuel Bouyer. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* control messages */ 33 #define GSCAN_SET_HOST_FORMAT 0 /* out */ 34 35 struct gscan_set_hf { 36 uint32_t hf_byte_order; /* set to 0x0000beef */ 37 } __packed; 38 39 #define GSCAN_SET_BITTIMING 1 /* out */ 40 41 struct gscan_bt { 42 uint32_t bt_prop_seg; 43 uint32_t bt_phase_seg1; 44 uint32_t bt_phase_seg2; 45 uint32_t bt_swj; 46 uint32_t bt_brp; 47 } __packed; 48 49 #define GSCAN_SET_MODE 2 /* out */ 50 51 struct gscan_set_mode { 52 uint32_t mode_mode; 53 #define MODE_RESET 0 54 #define MODE_START 1 55 uint32_t mode_flags; 56 #define FLAGS_LISTEN_ONLY 0x01 57 #define FLAGS_LOOPBACK 0x02 58 #define FLAGS_TRIPLE_SAMPLE 0x04 59 #define FLAGS_ONE_SHOT 0x08 60 } __packed; 61 62 #define GSCAN_BERR 3 /* ??? */ 63 #define GSCAN_GET_BT_CONST 4 /* in */ 64 65 struct gscan_bt_const { 66 uint32_t btc_features; 67 #define FEAT_LISTEN_ONLY 0x01 68 #define FEAT_LOOPBACK 0x02 69 #define FEAT_TRIPLE_SAMPLE 0x04 70 #define FEAT_ONE_SHOT 0x08 71 #define FEAT_HW_TS 0x10 72 #define FEAT_IDENTIFY 0x20 73 uint32_t btc_fclk; 74 uint32_t btc_tseg1_min; 75 uint32_t btc_tseg1_max; 76 uint32_t btc_tseg2_min; 77 uint32_t btc_tseg2_max; 78 uint32_t btc_swj_max; 79 uint32_t btc_brp_min; 80 uint32_t btc_brp_max; 81 uint32_t btc_brp_inc; 82 } __packed; 83 84 #define GSCAN_GET_DEVICE_CONFIG 5 /* in */ 85 86 struct gscan_config { 87 uint8_t _pad[3]; 88 uint8_t conf_count; 89 uint32_t sw_version; 90 uint32_t hw_version; 91 } __packed; 92 93 #define GSCAN_TIMESTAMP 6 /* ??? */ 94 #define GSCAN_SET_IDENTIFY 7 /* out */ 95 96 struct gscan_ident { 97 uint32_t ident_state; /* 0 = LED off, 1 = LED on */ 98 } __packed; 99 100 /* 101 * CAN frame on in and out endpoints */ 102 struct gscan_frame { 103 uint32_t gsframe_echo_id; 104 uint32_t gsframe_can_id; 105 uint8_t gsframe_can_dlc; 106 uint8_t gsframe_channel; 107 uint8_t gsframe_flags; 108 uint8_t _res; 109 uint8_t gsframe_can_data[8]; 110 } __packed; 111 112 #define GSFRAME_FLAG_OVER 0x01 113