1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (C) 1995 by Pavel Antonov, Moscow, Russia. 5 * Copyright (C) 1995 by Andrey A. Chernov, Moscow, Russia. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD$ 30 */ 31 32 /* 33 * Cirrus Logic CD180 registers 34 */ 35 36 /* Global registers */ 37 #define CD180_GIVR 0x40 /* Global Interrupt Verctor Register */ 38 #define CD180_GICR 0x41 /* Global Interrupting Channel Register */ 39 #define CD180_PILR1 0x61 /* Priority Interrupt Level Register 1 */ 40 #define CD180_PILR2 0x62 /* Priority Interrupt Level Register 2 */ 41 #define CD180_PILR3 0x63 /* Priority Interrupt Level Register 3 */ 42 #define CD180_CAR 0x64 /* Channel Access Register */ 43 #define CD180_GFRCR 0x6B /* Global Firmware Revision Code Register */ 44 #define CD180_PPRH 0x70 /* Prescaler Period Register MSB */ 45 #define CD180_PPRL 0x71 /* Prescaler Period Register LSB */ 46 #define CD180_RDR 0x78 /* Receiver Data Register */ 47 #define CD180_RCSR 0x7A /* Receiver Character Status Register */ 48 #define CD180_TDR 0x7B /* Transmit Data Register */ 49 #define CD180_EOIR 0x7F /* End of Interrupt Register */ 50 51 /* Channel Registers */ 52 #define CD180_CCR 0x01 /* Channel Command Register */ 53 #define CD180_IER 0x02 /* Interrupt Enable Register */ 54 #define CD180_COR1 0x03 /* Channel Option Register 1 */ 55 #define CD180_COR2 0x04 /* Channel Option Register 1 */ 56 #define CD180_COR3 0x05 /* Channel Option Register 1 */ 57 #define CD180_CCSR 0x06 /* Channel Control STatus Register */ 58 #define CD180_RDCR 0x07 /* Receive Data Count Register */ 59 #define CD180_SCHR1 0x09 /* Special Character Register 1 */ 60 #define CD180_SCHR2 0x0A /* Special Character Register 2 */ 61 #define CD180_SCHR3 0x0B /* Special Character Register 3 */ 62 #define CD180_SCHR4 0x0C /* Special Character Register 4 */ 63 #define CD180_MCOR1 0x10 /* Modem Change Option 1 Register */ 64 #define CD180_MCOR2 0x11 /* Modem Change Option 2 Register */ 65 #define CD180_MCR 0x12 /* Modem Change Register */ 66 #define CD180_RTPR 0x18 /* Receive Timeout Period Register */ 67 #define CD180_MSVR 0x28 /* Modem Signal Value Register */ 68 #define CD180_RBPRH 0x31 /* Receive Baud Rate Period Register MSB */ 69 #define CD180_RBPRL 0x32 /* Receive Baud Rate Period Register LSB */ 70 #define CD180_TBPRH 0x39 /* Transmit Baud Rate Period Register MSB */ 71 #define CD180_TBPRL 0x3A /* Transmit Baud Rate Period Register LSB */ 72 73 /** Register descritpions **/ 74 75 /* Global Interrupt Vector Register */ 76 #define GIVR_IT_MSCI 0x01 /* Modem Signal Change Interrupt */ 77 #define GIVR_IT_TDI 0x02 /* Transmit Data Interrupt */ 78 #define GIVR_IT_RGDI 0x03 /* Receive Good Data Interrupt */ 79 #define GIVR_IT_REI 0x07 /* Receive Exception Interrupt */ 80 81 /* Global Interrupt Channel Register */ 82 #define GICR_CHAN 0x1C /* Channel Number Mask */ 83 #define GICR_LSH 2 /* Channel Number Shift */ 84 85 /* Channel Address Register */ 86 #define CAR_CHAN 0x07 /* Channel Number Mask */ 87 #define CAR_A7 0x08 /* Address bit 7 (unused) */ 88 89 /* Receive Character Status Register */ 90 #define RCSR_OE 0x01 /* Overrun Error */ 91 #define RCSR_FE 0x02 /* Frame Error */ 92 #define RCSR_PE 0x04 /* Parity Error */ 93 #define RCSR_Break 0x08 /* Break detected */ 94 #define RCSR_Timeout 0x80 /* Rx Timeout */ 95 #define RCSR_SCMASK 0x70 /* Special Character Detected Mask */ 96 #define RCSR_SC1 0x10 /* Special Char 1 (or 1 & 3 seq matched) */ 97 #define RCSR_SC2 0x20 /* Special Char 2 (or 2 & 4 seq matched) */ 98 #define RCSR_SC3 0x30 /* Special Char 3 */ 99 #define RCSR_SC4 0x40 /* Special Char 4 */ 100 101 /* Channel Command Register */ 102 #define CCR_ResetChan 0x80 /* Reset Channel */ 103 #define CCR_HWRESET 0x81 /* Hardware Reset (all channels) */ 104 #define CCR_CORCHG1 0x42 /* Channel Option Register 1 Changed */ 105 #define CCR_CORCHG2 0x44 /* Channel Option Register 2 Changed */ 106 #define CCR_CORCHG3 0x48 /* Channel Option Register 3 Changed */ 107 #define CCR_SENDSPCH1 0x21 /* Send Special Character 1 */ 108 #define CCR_SENDSPCH2 0x22 /* Send Special Character 2 */ 109 #define CCR_SENDSPCH3 0x23 /* Send Special Character 3 */ 110 #define CCR_SENDSPCH4 0x24 /* Send Special Character 4 */ 111 #define CCR_RCVRDIS 0x11 /* Receiver Disable */ 112 #define CCR_RCVREN 0x12 /* Receiver Enable */ 113 #define CCR_XMTRDIS 0x14 /* Transmitter Disable */ 114 #define CCR_XMTREN 0x18 /* Transmitter Enable */ 115 116 /* Interrupt Enable Register */ 117 #define IER_DSR 0x80 /* Enable interrupt on DSR change */ 118 #define IER_CD 0x40 /* Enable interrupt on CD change */ 119 #define IER_CTS 0x20 /* Enable interrupt on CTS change */ 120 #define IER_RxData 0x10 /* Enable interrupt on Receive Data */ 121 #define IER_RxSC 0x08 /* Enable interrupt on Receive Spec. Char */ 122 #define IER_TxRdy 0x04 /* Enable interrupt on TX FIFO empty */ 123 #define IER_TxMpty 0x02 /* Enable interrupt on TX completely empty*/ 124 #define IER_RET 0x01 /* Enable interrupt on RX Except. Timeout */ 125 126 /* Channel Option Register 1 */ 127 #define COR1_ODDP 0x80 /* Odd Parity */ 128 #define COR1_ParMMASK 0x60 /* Parity Mode mask */ 129 #define COR1_NOPAR 0x02 /* No Parity */ 130 #define COR1_FORCEPAR 0x20 /* Force Parity */ 131 #define COR1_NORMPAR 0x40 /* Normal Parity */ 132 #define COR1_Ignore 0x10 /* Ignore Parity on RX */ 133 #define COR1_StopMASK 0x0C /* Stop Bits mode mask */ 134 #define COR1_1SB 0x00 /* 1 Stop Bit */ 135 #define COR1_15SB 0x04 /* 1.5 Stop Bits */ 136 #define COR1_2SB 0x08 /* 2 Stop Bits */ 137 #define COR1_CHLMASK 0x03 /* Character Length mask */ 138 #define COR1_5BITS 0x00 /* 5 bits */ 139 #define COR1_6BITS 0x01 /* 6 bits */ 140 #define COR1_7BITS 0x02 /* 7 bits */ 141 #define COR1_8BITS 0x03 /* 8 bits */ 142 143 /* Channel Option Register 2 */ 144 #define COR2_IXM 0x80 /* Implied XON mode */ 145 #define COR2_TxIBE 0x40 /* Enable In-Band XON/XOFF Flow Control */ 146 #define COR2_ETC 0x20 /* Embedded Tx Commands Enable */ 147 #define COR2_LLM 0x10 /* Local Loopback Mode */ 148 #define COR2_RLM 0x08 /* Remote Loopback Mode */ 149 #define COR2_RtsAO 0x04 /* RTS Automatic Output Enable */ 150 #define COR2_CtsAE 0x02 /* CTS Automatic Enable */ 151 #define COR2_DsrAE 0x01 /* DSR Automatic Enable */ 152 153 /* Channel Option Register 3 */ 154 #define COR3_XonCH 0x80 /* XON is a double seq (1 & 3) */ 155 #define COR3_XoffCH 0x40 /* XOFF is a double seq (1 & 3) */ 156 #define COR3_FCT 0x20 /* Flow-Control Transparency Mode */ 157 #define COR3_SCDE 0x10 /* Special Character Detection Enable */ 158 #define COR3_RxTHMASK 0x0F /* RX FIFO Threshold value (1-8) */ 159 160 /* Channel Control Status Register */ 161 #define CCSR_RxEn 0x80 /* Revceiver Enabled */ 162 #define CCSR_RxFloff 0x40 /* Receive Flow Off (XOFF sent) */ 163 #define CCSR_RxFlon 0x20 /* Receive Flow On (XON sent) */ 164 #define CCSR_TxEn 0x08 /* Transmitter Enabled */ 165 #define CCSR_TxFloff 0x04 /* Transmit Flow Off (got XOFF) */ 166 #define CCSR_TxFlon 0x02 /* Transmit Flow On (got XON) */ 167 168 /* Modem Change Option Register 1 */ 169 #define MCOR1_DSRzd 0x80 /* Detect 0->1 transition of DSR */ 170 #define MCOR1_CDzd 0x40 /* Detect 0->1 transition of CD */ 171 #define MCOR1_CTSzd 0x20 /* Detect 0->1 transition of CTS */ 172 #define MCOR1_DTRthMASK 0x0F /* Automatic DTR FC Threshold (1-8) chars */ 173 174 /* Modem Change Option Register 2 */ 175 #define MCOR2_DSRod 0x80 /* Detect 1->0 transition of DSR */ 176 #define MCOR2_CDod 0x40 /* Detect 1->0 transition of CD */ 177 #define MCOR2_CTSod 0x20 /* Detect 1->0 transition of CTS */ 178 179 /* Modem Change Register */ 180 #define MCR_DSRchg 0x80 /* DSR Changed */ 181 #define MCR_CDchg 0x40 /* CD Changed */ 182 #define MCR_CTSchg 0x20 /* CTS Changed */ 183 184 /* Modem Signal Value Register */ 185 #define MSVR_DSR 0x80 /* Current state of DSR input */ 186 #define MSVR_CD 0x40 /* Current state of DSR input */ 187 #define MSVR_CTS 0x20 /* Current state of CTS input */ 188 #define MSVR_DTR 0x02 /* Current state of DTR output */ 189 #define MSVR_RTS 0x01 /* Current state of RTS output */ 190 191 /* Escape characters */ 192 #define CD180_C_ESC 0x00 /* Escape character */ 193 #define CD180_C_SBRK 0x81 /* Start sending BREAK */ 194 #define CD180_C_DELAY 0x82 /* Delay output */ 195 #define CD180_C_EBRK 0x83 /* Stop sending BREAK */ 196 197 /* Miscellaneous */ 198 #define CD180_NCHAN 8 /* 8 channels per chip */ 199 #define CD180_CTICKS 16 /* 16 ticks for character processing */ 200 #define CD180_NFIFO 8 /* 8 bytes in FIFO */ 201