1 /* $OpenBSD: oosiopreg.h,v 1.2 2010/04/20 20:21:56 miod Exp $ */ 2 /* $NetBSD: oosiopreg.h,v 1.3 2003/11/02 11:07:45 wiz Exp $ */ 3 4 /* 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Van Jacobson of Lawrence Berkeley Laboratory. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)siopreg.h 7.3 (Berkeley) 2/5/91 36 */ 37 38 /* 39 * NCR 53C700 SCSI interface hardware description. 40 * 41 * From the Mach scsi driver for the 53C700 and amiga siop driver 42 */ 43 44 #define OOSIOP_SCNTL0 0x00 /* rw: SCSI control reg 0 */ 45 #define OOSIOP_SCNTL1 0x01 /* rw: SCSI control reg 1 */ 46 #define OOSIOP_SDID 0x02 /* rw: SCSI destination ID */ 47 #define OOSIOP_SIEN 0x03 /* rw: SCSI interrupt enable */ 48 #define OOSIOP_SCID 0x04 /* rw: SCSI Chip ID reg */ 49 #define OOSIOP_SXFER 0x05 /* rw: SCSI Transfer reg */ 50 #define OOSIOP_SODL 0x06 /* rw: SCSI Output Data Latch */ 51 #define OOSIOP_SOCL 0x07 /* rw: SCSI Output Control Latch */ 52 #define OOSIOP_SFBR 0x08 /* ro: SCSI First Byte Received */ 53 #define OOSIOP_SIDL 0x09 /* ro: SCSI Input Data Latch */ 54 #define OOSIOP_SBDL 0x0a /* ro: SCSI Bus Data Lines */ 55 #define OOSIOP_SBCL 0x0b /* rw: SCSI Bus Control Lines */ 56 #define OOSIOP_DSTAT 0x0c /* ro: DMA status */ 57 #define OOSIOP_SSTAT0 0x0d /* ro: SCSI status reg 0 */ 58 #define OOSIOP_SSTAT1 0x0e /* ro: SCSI status reg 1 */ 59 #define OOSIOP_SSTAT2 0x0f /* ro: SCSI status reg 2 */ 60 #define OOSIOP_SCRA0 0x10 /* rw: Scratch A */ 61 #define OOSIOP_SCRA1 0x11 62 #define OOSIOP_SCRA2 0x12 63 #define OOSIOP_SCRA3 0x13 64 #define OOSIOP_CTEST0 0x14 /* ro: Chip test register 0 */ 65 #define OOSIOP_CTEST1 0x15 /* ro: Chip test register 1 */ 66 #define OOSIOP_CTEST2 0x16 /* ro: Chip test register 2 */ 67 #define OOSIOP_CTEST3 0x17 /* ro: Chip test register 3 */ 68 #define OOSIOP_CTEST4 0x18 /* rw: Chip test register 4 */ 69 #define OOSIOP_CTEST5 0x19 /* rw: Chip test register 5 */ 70 #define OOSIOP_CTEST6 0x1a /* rw: Chip test register 6 */ 71 #define OOSIOP_CTEST7 0x1b /* rw: Chip test register 7 */ 72 #define OOSIOP_TEMP 0x1c /* rw: Temporary Stack reg */ 73 #define OOSIOP_DFIFO 0x20 /* rw: DMA FIFO */ 74 #define OOSIOP_ISTAT 0x21 /* rw: Interrupt Status reg */ 75 #define OOSIOP_CTEST8 0x22 /* rw: Chip test register 8 */ 76 #define OOSIOP_CTEST9 0x23 /* ro: Chip test register 9 */ 77 #define OOSIOP_DBC 0x24 /* rw: DMA Byte Counter reg */ 78 #define OOSIOP_DCMD 0x27 /* rw: DMA Command Register */ 79 #define OOSIOP_DNAD 0x28 /* rw: DMA Next Address */ 80 #define OOSIOP_DSP 0x2c /* rw: DMA SCRIPTS Pointer reg */ 81 #define OOSIOP_DSPS 0x30 /* rw: DMA SCRIPTS Pointer Save reg */ 82 #define OOSIOP_DMODE 0x34 /* rw: DMA Mode reg */ 83 #define OOSIOP_RES35 0x35 84 #define OOSIOP_RES36 0x36 85 #define OOSIOP_RES37 0x37 86 #define OOSIOP_RES38 0x38 87 #define OOSIOP_DIEN 0x39 /* rw: DMA Interrupt Enable */ 88 #define OOSIOP_DWT 0x3a /* rw: DMA Watchdog Timer */ 89 #define OOSIOP_DCNTL 0x3b /* rw: DMA Control reg */ 90 #define OOSIOP_SCRB0 0x3c /* rw: Scratch B */ 91 #define OOSIOP_SCRB1 0x3d 92 #define OOSIOP_SCRB2 0x3e 93 #define OOSIOP_SCRB3 0x3f 94 95 #define OOSIOP_NREGS 0x40 96 97 98 /* 99 * Register defines 100 */ 101 102 /* Scsi control register 0 (scntl0) */ 103 104 #define OOSIOP_SCNTL0_ARB 0xc0 /* Arbitration mode */ 105 #define OOSIOP_ARB_SIMPLE 0x00 106 #define OOSIOP_ARB_FULL 0xc0 107 #define OOSIOP_SCNTL0_START 0x20 /* Start Sequence */ 108 #define OOSIOP_SCNTL0_WATN 0x10 /* (Select) With ATN */ 109 #define OOSIOP_SCNTL0_EPC 0x08 /* Enable Parity Checking */ 110 #define OOSIOP_SCNTL0_EPG 0x04 /* Enable Parity Generation */ 111 #define OOSIOP_SCNTL0_AAP 0x02 /* Assert ATN on Parity Error */ 112 #define OOSIOP_SCNTL0_TRG 0x01 /* Target Mode */ 113 114 /* Scsi control register 1 (scntl1) */ 115 116 #define OOSIOP_SCNTL1_EXC 0x80 /* Extra Clock Cycle of data setup */ 117 #define OOSIOP_SCNTL1_ADB 0x40 /* Assert Data Bus */ 118 #define OOSIOP_SCNTL1_ESR 0x20 /* Enable Selection/Reselection */ 119 #define OOSIOP_SCNTL1_CON 0x10 /* Connected */ 120 #define OOSIOP_SCNTL1_RST 0x08 /* Assert RST */ 121 #define OOSIOP_SCNTL1_AESP 0x04 /* Assert even SCSI parity */ 122 #define OOSIOP_SCNTL1_SND 0x02 /* Start Send operation */ 123 #define OOSIOP_SCNTL1_RCV 0x01 /* Start Receive operation */ 124 125 /* Scsi interrupt enable register (sien) */ 126 127 #define OOSIOP_SIEN_M_A 0x80 /* Phase Mismatch or ATN active */ 128 #define OOSIOP_SIEN_FC 0x40 /* Function Complete */ 129 #define OOSIOP_SIEN_STO 0x20 /* (Re)Selection timeout */ 130 #define OOSIOP_SIEN_SEL 0x10 /* (Re)Selected */ 131 #define OOSIOP_SIEN_SGE 0x08 /* SCSI Gross Error */ 132 #define OOSIOP_SIEN_UDC 0x04 /* Unexpected Disconnect */ 133 #define OOSIOP_SIEN_RST 0x02 /* RST asserted */ 134 #define OOSIOP_SIEN_PAR 0x01 /* Parity Error */ 135 136 /* Scsi chip ID (scid) */ 137 138 #define OOSIOP_SCID_VALUE(i) (1 << i) 139 140 /* Scsi transfer register (sxfer) */ 141 142 #define OOSIOP_SXFER_DHP 0x80 /* Disable Halt on Parity error/ 143 ATN asserted */ 144 #define OOSIOP_SXFER_TP 0x70 /* Synch Transfer Period */ 145 /* see specs for formulas: 146 Period = TCP * (4 + XFERP ) 147 TCP = 1 + CLK + 1..2; 148 */ 149 #define OOSIOP_SXFER_MO 0x0f /* Synch Max Offset */ 150 #define OOSIOP_MAX_OFFSET 8 151 152 /* Scsi output data latch register (sodl) */ 153 154 /* Scsi output control latch register (socl) */ 155 156 #define OOSIOP_REQ 0x80 /* SCSI signal <x> asserted */ 157 #define OOSIOP_ACK 0x40 158 #define OOSIOP_BSY 0x20 159 #define OOSIOP_SEL 0x10 160 #define OOSIOP_ATN 0x08 161 #define OOSIOP_MSG 0x04 162 #define OOSIOP_CD 0x02 163 #define OOSIOP_IO 0x01 164 165 #define OOSIOP_PHASE(socl) SCSI_PHASE(socl) 166 167 /* Scsi first byte received register (sfbr) */ 168 169 /* Scsi input data latch register (sidl) */ 170 171 /* Scsi bus data lines register (sbdl) */ 172 173 /* Scsi bus control lines register (sbcl). Same as socl */ 174 175 #define OOSIOP_SBCL_SSCF1 0x02 /* wo */ 176 #define OOSIOP_SBCL_SSCF0 0x01 /* wo */ 177 178 /* DMA status register (dstat) */ 179 180 #define OOSIOP_DSTAT_DFE 0x80 /* DMA FIFO empty */ 181 #define OOSIOP_DSTAT_ABRT 0x10 /* Aborted */ 182 #define OOSIOP_DSTAT_SSI 0x08 /* SCRIPT Single Step */ 183 #define OOSIOP_DSTAT_SIR 0x04 /* SCRIPT Interrupt Instruction */ 184 #define OOSIOP_DSTAT_WTD 0x02 /* Watchdog Timeout Detected */ 185 #define OOSIOP_DSTAT_IID 0x01 /* Invalid Instruction Detected */ 186 187 /* Scsi status register 0 (sstat0) */ 188 189 #define OOSIOP_SSTAT0_M_A 0x80 /* Phase Mismatch or ATN active */ 190 #define OOSIOP_SSTAT0_FC 0x40 /* Function Complete */ 191 #define OOSIOP_SSTAT0_STO 0x20 /* (Re)Selection timeout */ 192 #define OOSIOP_SSTAT0_SEL 0x10 /* (Re)Selected */ 193 #define OOSIOP_SSTAT0_SGE 0x08 /* SCSI Gross Error */ 194 #define OOSIOP_SSTAT0_UDC 0x04 /* Unexpected Disconnect */ 195 #define OOSIOP_SSTAT0_RST 0x02 /* RST asserted */ 196 #define OOSIOP_SSTAT0_PAR 0x01 /* Parity Error */ 197 198 /* Scsi status register 1 (sstat1) */ 199 200 #define OOSIOP_SSTAT1_ILF 0x80 /* Input latch (sidl) full */ 201 #define OOSIOP_SSTAT1_ORF 0x40 /* output reg (sodr) full */ 202 #define OOSIOP_SSTAT1_OLF 0x20 /* output latch (sodl) full */ 203 #define OOSIOP_SSTAT1_AIP 0x10 /* Arbitration in progress */ 204 #define OOSIOP_SSTAT1_LOA 0x08 /* Lost arbitration */ 205 #define OOSIOP_SSTAT1_WOA 0x04 /* Won arbitration */ 206 #define OOSIOP_SSTAT1_RST 0x02 /* SCSI RST current value */ 207 #define OOSIOP_SSTAT1_SDP 0x01 /* SCSI SDP current value */ 208 209 /* Scsi status register 2 (sstat2) */ 210 211 #define OOSIOP_SSTAT2_FF 0xf0 /* SCSI FIFO flags (bytecount) */ 212 #define OOSIOP_SCSI_FIFO_DEEP 8 213 #define OOSIOP_SSTAT2_SDP 0x08 /* Latched (on REQ) SCSI SDP */ 214 #define OOSIOP_SSTAT2_MSG 0x04 /* Latched SCSI phase */ 215 #define OOSIOP_SSTAT2_CD 0x02 216 #define OOSIOP_SSTAT2_IO 0x01 217 218 /* Chip test register 0 (ctest0) */ 219 220 #define OOSIOP_CTEST0_RTRG 0x02 /* Real Target Mode */ 221 #define OOSIOP_CTEST0_DDIR 0x01 /* Xfer direction (1-> from SCSI bus) */ 222 223 /* Chip test register 1 (ctest1) */ 224 225 #define OOSIOP_CTEST1_FMT 0xf0 /* Byte empty in DMA FIFO bottom 226 (high->byte3) */ 227 #define OOSIOP_CTEST1_FFL 0x0f /* Byte full in DMA FIFO top, same */ 228 229 /* Chip test register 2 (ctest2) */ 230 231 #define OOSIOP_CTEST2_SOFF 0x20 /* Synch Offset compare 232 (1-> zero Init, max Tgt) */ 233 #define OOSIOP_CTEST2_SFP 0x10 /* SCSI FIFO Parity */ 234 #define OOSIOP_CTEST2_DFP 0x08 /* DMA FIFO Parity */ 235 #define OOSIOP_CTEST2_TEOP 0x04 /* True EOP (a-la 5380) */ 236 #define OOSIOP_CTEST2_DREQ 0x02 /* DREQ status */ 237 #define OOSIOP_CTEST2_DACK 0x01 /* DACK status */ 238 239 /* Chip test register 3 (ctest3) read-only, top of SCSI FIFO */ 240 241 /* Chip test register 4 (ctest4) */ 242 243 #define OOSIOP_CTEST4_ZMOD 0x40 /* High-impedance outputs */ 244 #define OOSIOP_CTEST4_SZM 0x20 /* ditto, SCSI "outputs" */ 245 #define OOSIOP_CTEST4_SLBE 0x10 /* SCSI loopback enable */ 246 #define OOSIOP_CTEST4_SFWR 0x08 /* SCSI FIFO write enable (from sodl) */ 247 #define OOSIOP_CTEST4_FBL 0x07 /* DMA FIFO Byte Lane select 248 (from ctest6) 4->0, .. 7->3 */ 249 250 /* Chip test register 5 (ctest5) */ 251 252 #define OOSIOP_CTEST5_ADCK 0x80 /* Clock Address Incrementor */ 253 #define OOSIOP_CTEST5_BBCK 0x40 /* Clock Byte counter */ 254 #define OOSIOP_CTEST5_ROFF 0x20 /* Reset SCSI offset */ 255 #define OOSIOP_CTEST5_MASR 0x10 /* Master set/reset pulses 256 (of bits 3-0) */ 257 #define OOSIOP_CTEST5_DDIR 0x08 /* (re)set internal DMA direction */ 258 #define OOSIOP_CTEST5_EOP 0x04 /* (re)set internal EOP */ 259 #define OOSIOP_CTEST5_DREQ 0x02 /* (re)set internal REQ */ 260 #define OOSIOP_CTEST5_DACK 0x01 /* (re)set internal ACK */ 261 262 /* Chip test register 6 (ctest6) DMA FIFO access */ 263 264 /* Chip test register 7 (ctest7) */ 265 266 #define OOSIOP_CTEST7_STD 0x10 /* Selection timeout disable */ 267 #define OOSIOP_CTEST7_DFP 0x08 /* DMA FIFO parity bit */ 268 #define OOSIOP_CTEST7_EVP 0x04 /* Even parity (to host bus) */ 269 #define OOSIOP_CTEST7_DC 0x02 /* DC output signal low */ 270 #define OOSIOP_CTEST7_DIFF 0x01 /* Differential mode */ 271 272 /* DMA FIFO register (dfifo) */ 273 274 #define OOSIOP_DFIFO_FLF 0x80 /* Flush (spill) DMA FIFO */ 275 #define OOSIOP_DFIFO_CLF 0x40 /* Clear DMA and SCSI FIFOs */ 276 #define OOSIOP_DFIFO_BO 0x3f /* FIFO byte offset counter */ 277 278 /* Interrupt status register (istat) */ 279 280 #define OOSIOP_ISTAT_ABRT 0x80 /* Abort operation */ 281 #define OOSIOP_ISTAT_CON 0x08 /* Connected */ 282 #define OOSIOP_ISTAT_PRE 0x04 /* Pointer register empty */ 283 #define OOSIOP_ISTAT_SIP 0x02 /* SCSI Interrupt pending */ 284 #define OOSIOP_ISTAT_DIP 0x01 /* DMA Interrupt pending */ 285 286 /* Chip test register 8 (ctest8) */ 287 288 /* DMA Byte Counter register (dbc) */ 289 #define OOSIOP_DBC_MAX 0x00ffffff 290 291 /* DMA Mode register (dmode) */ 292 293 #define OOSIOP_DMODE_BL_MASK 0xc0 /* 0->1 1->2 2->4 3->8 */ 294 #define OOSIOP_DMODE_BL_1 0x00 295 #define OOSIOP_DMODE_BL_2 0x40 296 #define OOSIOP_DMODE_BL_4 0x80 297 #define OOSIOP_DMODE_BL_8 0xc0 298 #define OOSIOP_DMODE_BW16 0x20 /* Bus Width is 16 bits */ 299 #define OOSIOP_DMODE_286 0x10 /* 286 mode */ 300 #define OOSIOP_DMODE_IO_M 0x08 /* xfer data to memory or I/O space */ 301 #define OOSIOP_DMODE_FAM 0x04 /* fixed address mode */ 302 #define OOSIOP_DMODE_PIPE 0x02 /* SCRIPTS in Pipeline mode */ 303 #define OOSIOP_DMODE_MAN 0x01 /* SCRIPTS in Manual start mode */ 304 305 /* DMA interrupt enable register (dien) */ 306 307 #define OOSIOP_DIEN_BF 0x20 /* On Bus Fault */ 308 #define OOSIOP_DIEN_ABRT 0x10 /* On Abort */ 309 #define OOSIOP_DIEN_SSI 0x08 /* On SCRIPTS sstep */ 310 #define OOSIOP_DIEN_SIR 0x04 /* On SCRIPTS intr instruction */ 311 #define OOSIOP_DIEN_WTD 0x02 /* On watchdog timeout */ 312 #define OOSIOP_DIEN_IID 0x01 /* On illegal instruction detected */ 313 314 /* DMA control register (dcntl) */ 315 316 #define OOSIOP_DCNTL_CF_MASK 0xc0 /* Clock frequency dividers: */ 317 #define OOSIOP_DCNTL_CF_2 0x00 /* 0 --> 37.51..50.00 MHz, div=2 */ 318 #define OOSIOP_DCNTL_CF_1_5 0x40 /* 1 --> 25.01..37.50 MHz, div=1.5 */ 319 #define OOSIOP_DCNTL_CF_1 0x80 /* 2 --> 16.67..25.00 MHz, div=1 */ 320 #define OOSIOP_DCNTL_CF_3 0xc0 /* 3 --> 50.01..66.67 MHz, div=3 */ 321 #define OOSIOP_DCNTL_S16 0x20 /* SCRIPTS fetches 16bits at a time */ 322 #define OOSIOP_DCNTL_SSM 0x10 /* Single step mode */ 323 #define OOSIOP_DCNTL_LLM 0x08 /* Enable SCSI Low-level mode */ 324 #define OOSIOP_DCNTL_STD 0x04 /* Start DMA operation */ 325 #define OOSIOP_DCNTL_RST 0x01 /* Software reset */ 326