1 /* $NetBSD: sunxi_can.h,v 1.1 2018/03/07 20:55:31 bouyer Exp $ */ 2 3 /*- 4 * Copyright (c) 2017,2018 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 /* CAN mode select register */ 33 #define SUNXI_CAN_MODSEL_REG 0x00 34 #define SUNXI_CAN_MODSEL_SLEEP __BIT(4) 35 #define SUNXI_CAN_MODSEL_ACP_FLT_MOD __BIT(3) 36 #define SUNXI_CAN_MODSEL_LB_MOD __BIT(2) 37 #define SUNXI_CAN_MODSEL_LST_ONLY __BIT(1) 38 #define SUNXI_CAN_MODSEL_RST __BIT(0) 39 40 /* CAN command register */ 41 #define SUNXI_CAN_CMD_REG 0x04 42 #define SUNXI_CAN_CMD_BUS_OFF __BIT(5) 43 #define SUNXI_CAN_CMD_SELF_REQ __BIT(4) 44 #define SUNXI_CAN_CMD_CLR_OR __BIT(3) 45 #define SUNXI_CAN_CMD_REL_RX_BUF __BIT(2) 46 #define SUNXI_CAN_CMD_ABT_REQ __BIT(1) 47 #define SUNXI_CAN_CMD_TANS_REQ __BIT(0) 48 49 /* CAN status register */ 50 #define SUNXI_CAN_STA_REG 0x08 51 #define SUNXI_CAN_STA_ERR_CODE __BITS(23,22) 52 #define SUNXI_CAN_STA_ERR_CODE_BIT 0 53 #define SUNXI_CAN_STA_ERR_CODE_FORM 1 54 #define SUNXI_CAN_STA_ERR_CODE_STUFF 2 55 #define SUNXI_CAN_STA_ERR_CODE_OTHER 3 56 #define SUNXI_CAN_STA_ERR_DIR _BIT(21) 57 #define SUNXI_CAN_STA_ERR_SEG_CODE __BITS(20,16) 58 #define SUNXI_CAN_STA_ARB_LOST __BITS(12,8) 59 #define SUNXI_CAN_STA_BUS __BIT(7) 60 #define SUNXI_CAN_STA_ERR __BIT(6) 61 #define SUNXI_CAN_STA_TX __BIT(5) 62 #define SUNXI_CAN_STA_RX __BIT(4) 63 #define SUNXI_CAN_STA_TX_OVER __BIT(3) 64 #define SUNXI_CAN_STA_TX_RDY __BIT(2) 65 #define SUNXI_CAN_STA_DATA_OR __BIT(1) 66 #define SUNXI_CAN_STA_RX_RDY __BIT(0) 67 68 /* CAN interrupt register */ 69 #define SUNXI_CAN_INT_REG 0x0c 70 #define SUNXI_CAN_INT_BERR __BIT(7) 71 #define SUNXI_CAN_INT_ARB_LOST __BIT(6) 72 #define SUNXI_CAN_INT_ERR_PASSIVE __BIT(5) 73 #define SUNXI_CAN_INT_WAKEUP __BIT(4) 74 #define SUNXI_CAN_INT_DATA_OR __BIT(3) 75 #define SUNXI_CAN_INT_ERR __BIT(2) 76 #define SUNXI_CAN_INT_TX_FLAG __BIT(1) 77 #define SUNXI_CAN_INT_RX_FLAG __BIT(0) 78 79 /* CAN interrupt enable register */ 80 #define SUNXI_CAN_INTE_REG 0x10 81 82 /* CAN bus timing register */ 83 #define SUNXI_CAN_BUS_TIME_REG 0x14 84 #define SUNXI_CAN_BUS_TIME_SAM __BIT(23) 85 #define SUNXI_CAN_BUS_TIME_PHSEG2 __BITS(22,20) 86 #define SUNXI_CAN_BUS_TIME_PHSEG1 __BITS(19,16) 87 #define SUNXI_CAN_BUS_TIME_SJW __BITS(15,14) 88 #define SUNXI_CAN_BUS_TIME_TQ_BRP __BITS(9,0) 89 90 /* CAN tx error warning limit register */ 91 #define SUNXI_CAN_EWL_REG 0x18 92 #define SUNXI_CAN_EWL_ERR_WRN_LMT __BITS(7,0) 93 94 /* CAN error counter register */ 95 #define SUNXI_CAN_REC_REG 0x1c 96 #define SUNXI_CAN_REC_RX_ERR_CNT __BITS(23,16) 97 #define SUNXI_CAN_REC_TX_ERR_CNT __BITS(7,0) 98 99 /* CAN receive message register */ 100 #define SUNXI_CAN_RMSGC_REG 0x20 101 #define SUNXI_CAN_RMSGC_RX_MSG_CNT __BITS(7,0) 102 103 /* CAN receive buffer start address register */ 104 #define SUNXI_CAN_RSADDR_REG 0x24 105 #define SUNXI_CAN_RSADDR_RX_BUF_SADDR __BITS(5,0) 106 107 /* CAN rx/tx message buffer 0 register */ 108 #define SUNXI_CAN_TXBUF0_REG 0x40 109 #define SUNXI_CAN_TXBUF0_EFF __BIT(7) 110 #define SUNXI_CAN_TXBUF0_RTR __BIT(6) 111 #define SUNXI_CAN_TXBUF0_DL __BITS(3,0) 112 113 /* CAN rx/tx message buffer registers */ 114 #define SUNXI_CAN_TXBUF1_REG 0x44 115 #define SUNXI_CAN_TXBUF2_REG 0x48 116 #define SUNXI_CAN_TXBUF3_REG 0x4c 117 #define SUNXI_CAN_TXBUF4_REG 0x50 118 #define SUNXI_CAN_TXBUF5_REG 0x54 119 #define SUNXI_CAN_TXBUF6_REG 0x58 120 #define SUNXI_CAN_TXBUF7_REG 0x5c 121 #define SUNXI_CAN_TXBUF8_REG 0x60 122 #define SUNXI_CAN_TXBUF9_REG 0x64 123 #define SUNXI_CAN_TXBUF10_REG 0x68 124 #define SUNXI_CAN_TXBUF11_REG 0x6c 125 #define SUNXI_CAN_TXBUF12_REG 0x70 126 127 /* CAN acceptance code 0 register */ 128 #define SUNXI_CAN_ACPC 0x40 129 130 /* CAN acceptance mask 0 register */ 131 #define SUNXI_CAN_ACPM 0x44 132 133 /* CAN transmit buffer for read back registers */ 134 #define SUNXI_CAN_RBUF_RBACK0 0x180 135 #define SUNXI_CAN_RBUF_RBACK1 0x184 136 #define SUNXI_CAN_RBUF_RBACK2 0x188 137 #define SUNXI_CAN_RBUF_RBACK3 0x18c 138 #define SUNXI_CAN_RBUF_RBACK4 0x190 139 #define SUNXI_CAN_RBUF_RBACK5 0x194 140 #define SUNXI_CAN_RBUF_RBACK6 0x198 141 #define SUNXI_CAN_RBUF_RBACK7 0x19c 142 #define SUNXI_CAN_RBUF_RBACK8 0x1a0 143 #define SUNXI_CAN_RBUF_RBACK9 0x1a4 144 #define SUNXI_CAN_RBUF_RBACK10 0x1a8 145 #define SUNXI_CAN_RBUF_RBACK11 0x1ac 146 #define SUNXI_CAN_RBUF_RBACK12 0x1b0 147