1 /* $NetBSD: siopreg.h,v 1.16 2022/06/27 20:28:31 andvar Exp $ */ 2 3 /* 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Van Jacobson of Lawrence Berkeley Laboratory. 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 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)siopreg.h 7.3 (Berkeley) 2/5/91 35 */ 36 37 /* 38 * NCR 53C710 SCSI interface hardware description. 39 * 40 * From the Mach scsi driver for the 53C700 41 */ 42 43 typedef struct { 44 45 #ifndef ARCH_720 46 47 /*00*/ volatile unsigned char siop_sien; /* rw: SCSI Interrupt Enable */ 48 /*01*/ volatile unsigned char siop_sdid; /* rw: SCSI Destination ID */ 49 /*02*/ volatile unsigned char siop_scntl1; /* rw: SCSI control reg 1 */ 50 /*03*/ volatile unsigned char siop_scntl0; /* rw: SCSI control reg 0 */ 51 52 /*04*/ volatile unsigned char siop_socl; /* rw: SCSI Output Control Latch */ 53 /*05*/ volatile unsigned char siop_sodl; /* rw: SCSI Output Data Latch */ 54 /*06*/ volatile unsigned char siop_sxfer; /* rw: SCSI Transfer reg */ 55 /*07*/ volatile unsigned char siop_scid; /* rw: SCSI Chip ID reg */ 56 57 /*08*/ volatile unsigned char siop_sbcl; /* ro: SCSI Bus Control Lines */ 58 /*09*/ volatile unsigned char siop_sbdl; /* ro: SCSI Bus Data Lines */ 59 /*0a*/ volatile unsigned char siop_sidl; /* ro: SCSI Input Data Latch */ 60 /*0b*/ volatile unsigned char siop_sfbr; /* ro: SCSI First Byte Received */ 61 62 /*0c*/ volatile unsigned char siop_sstat2; /* ro: SCSI status reg 2 */ 63 /*0d*/ volatile unsigned char siop_sstat1; /* ro: SCSI status reg 1 */ 64 /*0e*/ volatile unsigned char siop_sstat0; /* ro: SCSI status reg 0 */ 65 /*0f*/ volatile unsigned char siop_dstat; /* ro: DMA status */ 66 67 /*10*/ volatile unsigned long siop_dsa; /* rw: Data Structure Address */ 68 69 /*14*/ volatile unsigned char siop_ctest3; /* ro: Chip test register 3 */ 70 /*15*/ volatile unsigned char siop_ctest2; /* ro: Chip test register 2 */ 71 /*16*/ volatile unsigned char siop_ctest1; /* ro: Chip test register 1 */ 72 /*17*/ volatile unsigned char siop_ctest0; /* ro: Chip test register 0 */ 73 74 /*18*/ volatile unsigned char siop_ctest7; /* rw: Chip test register 7 */ 75 /*19*/ volatile unsigned char siop_ctest6; /* rw: Chip test register 6 */ 76 /*1a*/ volatile unsigned char siop_ctest5; /* rw: Chip test register 5 */ 77 /*1b*/ volatile unsigned char siop_ctest4; /* rw: Chip test register 4 */ 78 79 /*1c*/ volatile unsigned long siop_temp; /* rw: Temporary Stack reg */ 80 81 /*20*/ volatile unsigned char siop_lcrc; /* rw: LCRC value */ 82 /*21*/ volatile unsigned char siop_ctest8; /* rw: Chip test register 8 */ 83 /*22*/ volatile unsigned char siop_istat; /* rw: Interrupt Status reg */ 84 /*23*/ volatile unsigned char siop_dfifo; /* rw: DMA FIFO */ 85 86 /*24*/ volatile unsigned char siop_dcmd; /* rw: DMA Command Register */ 87 /*25*/ volatile unsigned char siop_dbc2; /* rw: DMA Byte Counter reg */ 88 /*26*/ volatile unsigned char siop_dbc1; 89 /*27*/ volatile unsigned char siop_dbc0; 90 91 /*28*/ volatile unsigned long siop_dnad; /* rw: DMA Next Address */ 92 93 /*2c*/ volatile unsigned long siop_dsp; /* rw: DMA SCRIPTS Pointer reg */ 94 95 /*30*/ volatile unsigned long siop_dsps; /* rw: DMA SCRIPTS Pointer Save reg */ 96 97 /*34*/ volatile unsigned long siop_scratch; /* rw: Scratch Register */ 98 99 /*38*/ volatile unsigned char siop_dcntl; /* rw: DMA Control reg */ 100 /*39*/ volatile unsigned char siop_dwt; /* rw: DMA Watchdog Timer */ 101 /*3a*/ volatile unsigned char siop_dien; /* rw: DMA Interrupt Enable */ 102 /*3b*/ volatile unsigned char siop_dmode; /* rw: DMA Mode reg */ 103 104 /*3c*/ volatile unsigned long siop_adder; 105 106 #else 107 108 /*00*/ volatile unsigned char siop_scntl3; /* rw: SCSI control reg 3 */ 109 /*01*/ volatile unsigned char siop_scntl2; /* rw: SCSI control reg 2 */ 110 /*02*/ volatile unsigned char siop_scntl1; /* rw: SCSI control reg 1 */ 111 /*03*/ volatile unsigned char siop_scntl0; /* rw: SCSI control reg 0 */ 112 113 /*04*/ volatile unsigned char siop_gpreg; /* rw: SCSI */ 114 /*05*/ volatile unsigned char siop_sdid; /* rw: SCSI Destination ID */ 115 /*06*/ volatile unsigned char siop_sxfer; /* rw: SCSI Transfer reg */ 116 /*07*/ volatile unsigned char siop_scid; /* rw: SCSI Chip ID reg */ 117 118 /*08*/ volatile unsigned char siop_sbcl; /* ro: SCSI Bus Control Lines */ 119 /*09*/ volatile unsigned char siop_ssid; /* ro: SCSI */ 120 /*0a*/ volatile unsigned char siop_socl; /* rw: SCSI Output Control Latch */ 121 /*0b*/ volatile unsigned char siop_sfbr; /* ro: SCSI First Byte Received */ 122 123 /*0c*/ volatile unsigned char siop_sstat2; /* ro: SCSI status reg 2 */ 124 /*0d*/ volatile unsigned char siop_sstat1; /* ro: SCSI status reg 1 */ 125 /*0e*/ volatile unsigned char siop_sstat0; /* ro: SCSI status reg 0 */ 126 /*0f*/ volatile unsigned char siop_dstat; /* ro: DMA status */ 127 128 /*10*/ volatile unsigned long siop_dsa; /* rw: Data Structure Address */ 129 130 /*14*/ volatile unsigned char siop_14_; /* ??: */ 131 /*15*/ volatile unsigned char siop_15_; /* ??: */ 132 /*16*/ volatile unsigned char siop_16_; /* ??: */ 133 /*17*/ volatile unsigned char siop_istat; /* rw: Interrupt Status reg */ 134 135 /*18*/ volatile unsigned char siop_ctest3; /* ro: Chip test register 3 */ 136 /*19*/ volatile unsigned char siop_ctest2; /* ro: Chip test register 2 */ 137 /*1a*/ volatile unsigned char siop_ctest1; /* ro: Chip test register 1 */ 138 /*1b*/ volatile unsigned char siop_ctest0; /* ro: Chip test register 0 */ 139 140 /*1c*/ volatile unsigned long siop_temp; /* rw: Temporary Stack reg */ 141 142 /*20*/ volatile unsigned char siop_ctest6; /* rw: Chip test register 6 */ 143 /*21*/ volatile unsigned char siop_ctest5; /* rw: Chip test register 5 */ 144 /*22*/ volatile unsigned char siop_ctest4; /* rw: Chip test register 4 */ 145 /*23*/ volatile unsigned char siop_dfifo; /* rw: DMA FIFO */ 146 147 /*24*/ volatile unsigned char siop_dcmd; /* rw: DMA Command Register */ 148 /*25*/ volatile unsigned char siop_dbc2; /* rw: DMA Byte Counter reg */ 149 /*26*/ volatile unsigned char siop_dbc1; 150 /*27*/ volatile unsigned char siop_dbc0; 151 152 /*28*/ volatile unsigned long siop_dnad; /* rw: DMA Next Address */ 153 154 /*2c*/ volatile unsigned long siop_dsp; /* rw: DMA SCRIPTS Pointer reg */ 155 156 /*30*/ volatile unsigned long siop_dsps; /* rw: DMA SCRIPTS Pointer Save reg */ 157 158 /*34*/ volatile unsigned long siop_scratcha; /* rw: Scratch Register A */ 159 160 /*38*/ volatile unsigned char siop_dcntl; /* rw: DMA Control reg */ 161 /*39*/ volatile unsigned char siop_dwt; /* rw: DMA Watchdog Timer */ 162 /*3a*/ volatile unsigned char siop_dien; /* rw: DMA Interrupt Enable */ 163 /*3b*/ volatile unsigned char siop_dmode; /* rw: DMA Mode reg */ 164 165 /*3c*/ volatile unsigned long siop_adder; 166 167 /*40*/ volatile unsigned short siop_sist; /* rw: SCSI Interrupt Status */ 168 #define SIOP_SIST_STO 0x0400 /* timeout (select) */ 169 #define SIOP_SIST_GEN 0x0200 /* timeout (general) */ 170 #define SIOP_SIST_HTH 0x0100 /* handshake timer expired */ 171 #define SIOP_SIST_MA 0x0080 /* phase mismatch */ 172 #define SIOP_SIST_CMP 0x0040 /* function complete */ 173 #define SIOP_SIST_SEL 0x0020 /* selected */ 174 #define SIOP_SIST_RSL 0x0010 /* reselected */ 175 #define SIOP_SIST_SGE 0x0008 /* gross error (over/underflow) */ 176 #define SIOP_SIST_UDC 0x0004 /* unexpected disconnect */ 177 #define SIOP_SIST_RST 0x0002 /* RST received */ 178 #define SIOP_SIST_PAR 0x0001 /* scsi parity error */ 179 /*42*/ volatile unsigned short siop_sien; /* rw: SCSI Interrupt Enable */ 180 #define SIOP_SIEN_STO 0x0400 /* timeout (select) */ 181 #define SIOP_SIEN_GEN 0x0200 /* timeout (general) */ 182 #define SIOP_SIEN_HTH 0x0100 /* handshake timer expired */ 183 #define SIOP_SIEN_MA 0x0080 /* phase mispatch */ 184 #define SIOP_SIEN_CMP 0x0040 /* function complete */ 185 #define SIOP_SIEN_SEL 0x0020 /* selected */ 186 #define SIOP_SIEN_RSL 0x0010 /* reselected */ 187 #define SIOP_SIEN_SGE 0x0008 /* gross error (over/underflow) */ 188 #define SIOP_SIEN_UDC 0x0004 /* unexpected disconnect */ 189 #define SIOP_SIEN_RST 0x0002 /* scsi bus reset */ 190 #define SIOP_SIEN_PAR 0x0001 /* scsi parity error */ 191 192 /*44*/ volatile unsigned char siop_gpcntl; /* rw: SCSI */ 193 /*45*/ volatile unsigned char siop_macntl; /* rw: SCSI */ 194 /*46*/ volatile unsigned char siop_swide; /* rw: SCSI */ 195 /*47*/ volatile unsigned char siop_slpar; /* rw: SCSI */ 196 197 /*48*/ volatile unsigned short siop_respid; /* rw: SCSI Reselect-IDS */ 198 /*4a*/ volatile unsigned char siop_stime1; /* rw: SCSI */ 199 /*4b*/ volatile unsigned char siop_stime0; /* rw: SCSI */ 200 201 /*4c*/ volatile unsigned char siop_stest3; /* ro: Chip test register 3 */ 202 #define SIOP_STEST3_HSC 0x20 /* Halt SCSI Clock */ 203 /*4d*/ volatile unsigned char siop_stest2; /* ro: Chip test register 2 */ 204 /*4e*/ volatile unsigned char siop_stest1; /* ro: Chip test register 1 */ 205 #define SIOP_STEST1_DBLEN 0x08 /* SCLK Double Enable */ 206 #define SIOP_STEST1_DBLSEL 0x04 /* SCLK Doubler Select */ 207 /*4f*/ volatile unsigned char siop_stest0; /* ro: Chip test register 0 */ 208 209 /*50*/ volatile unsigned char siop_50_; /* rw: SCSI */ 210 /*51*/ volatile unsigned char siop_stest4; /* rw: SCSI */ 211 /*52*/ volatile unsigned short siop_sidl; /* ro: SCSI Input Data Latch */ 212 213 /*54*/ volatile unsigned short siop_54_; /* rw: SCSI */ 214 /*56*/ volatile unsigned short siop_sodl; /* rw: SCSI Output Data Latch */ 215 216 /*58*/ volatile unsigned short siop_58_; /* rw: SCSI */ 217 /*5a*/ volatile unsigned short siop_sbdl; /* ro: SCSI Bus Data Lines */ 218 219 /*5c*/ volatile unsigned long siop_scratchb; /* rw: Scratch Register B */ 220 #endif 221 222 } siop_regmap_t; 223 typedef volatile siop_regmap_t *siop_regmap_p; 224 225 /* 226 * Register defines 227 */ 228 229 /* Scsi control register 0 (scntl0) */ 230 231 #define SIOP_SCNTL0_ARB 0xc0 /* Arbitration mode */ 232 # define SIOP_ARB_SIMPLE 0x00 233 # define SIOP_ARB_FULL 0xc0 234 #define SIOP_SCNTL0_START 0x20 /* Start Sequence */ 235 #define SIOP_SCNTL0_WATN 0x10 /* (Select) With ATN */ 236 #define SIOP_SCNTL0_EPC 0x08 /* Enable Parity Checking */ 237 #define SIOP_SCNTL0_EPG 0x04 /* Enable Parity Generation */ 238 #define SIOP_SCNTL0_AAP 0x02 /* Assert ATN on Parity Error */ 239 #define SIOP_SCNTL0_TRG 0x01 /* Target Mode */ 240 241 /* Scsi control register 1 (scntl1) */ 242 243 #define SIOP_SCNTL1_EXC 0x80 /* Extra Clock Cycle of data setup */ 244 #define SIOP_SCNTL1_ADB 0x40 /* Assert Data Bus */ 245 #ifndef ARCH_720 246 #define SIOP_SCNTL1_ESR 0x20 /* Enable Selection/Reselection */ 247 #else 248 #define SIOP_SCNTL1_DHP 0x20 /* Disable Halt on Parity or ATN */ 249 #endif 250 #define SIOP_SCNTL1_CON 0x10 /* Connected */ 251 #define SIOP_SCNTL1_RST 0x08 /* Assert RST */ 252 #define SIOP_SCNTL1_AESP 0x04 /* Assert even SCSI parity */ 253 #ifndef ARCH_720 254 #define SIOP_SCNTL1_RES0 0x02 /* Reserved */ 255 #define SIOP_SCNTL1_RES1 0x01 /* Reserved */ 256 #else 257 #define SIOP_SCNTL1_IARB 0x02 /* Immediate Arbitration */ 258 #define SIOP_SCNTL1_SST 0x01 /* Start SCSI Transfer */ 259 #endif 260 261 /* Scsi control register 3 (scntl3) */ 262 263 #ifdef ARCH_720 264 #define SIOP_SCNTL3_ULTRA 0x80 /* Ultra Enable */ 265 #define SIOP_SCNTL3_SCF 0x70 /* Synch Clock Conversion Factor */ 266 #define SIOP_SCNTL3_EWS 0x08 /* Enable Wide SCSI */ 267 #define SIOP_SCNTL3_CCF 0x07 /* Clock Conversion Factor */ 268 #endif 269 270 /* Scsi interrupt enable register (sien) */ 271 272 #ifndef ARCH_720 273 #define SIOP_SIEN_M_A 0x80 /* Phase Mismatch or ATN active */ 274 #define SIOP_SIEN_FCMP 0x40 /* Function Complete */ 275 #define SIOP_SIEN_STO 0x20 /* (Re)Selection timeout */ 276 #define SIOP_SIEN_SEL 0x10 /* (Re)Selected */ 277 #define SIOP_SIEN_SGE 0x08 /* SCSI Gross Error */ 278 #define SIOP_SIEN_UDC 0x04 /* Unexpected Disconnect */ 279 #define SIOP_SIEN_RST 0x02 /* RST asserted */ 280 #define SIOP_SIEN_PAR 0x01 /* Parity Error */ 281 #endif 282 283 /* Scsi chip ID (scid) */ 284 285 #define SIOP_SCID_VALUE(i) (1<<i) 286 #ifdef ARCH_720 287 #define SIOP_SCID_RRE 0x40 /* Enable Response to Reselection */ 288 #define SIOP_SCID_SRE 0x20 /* Enable Response to Selection */ 289 #endif 290 291 /* Scsi transfer register (sxfer) */ 292 293 #ifndef ARCH_720 294 #define SIOP_SXFER_DHP 0x80 /* Disable Halt on Parity error/ ATN asserted */ 295 #define SIOP_SXFER_TP 0x70 /* Synch Transfer Period */ 296 /* see specs for formulas: 297 Period = TCP * (4 + XFERP ) 298 TCP = 1 + CLK + 1..2; 299 */ 300 #define SIOP_SXFER_MO 0x0f /* Synch Max Offset */ 301 # define SIOP_MAX_OFFSET 8 302 #else 303 #define SIOP_SXFER_TP 0xe0 /* Synch Transfer Period */ 304 /* see specs for formulas: 305 Period = TCP * (4 + XFERP ) 306 TCP = 1 + CLK + 1..2; 307 */ 308 #define SIOP_SXFER_MO 0x1f /* Synch Max Offset */ 309 # define SIOP_MAX_OFFSET 16 310 #endif 311 312 /* Scsi output data latch register (sodl) */ 313 314 /* Scsi output control latch register (socl) */ 315 316 #define SIOP_REQ 0x80 /* SCSI signal <x> asserted */ 317 #define SIOP_ACK 0x40 318 #define SIOP_BSY 0x20 319 #define SIOP_SEL 0x10 320 #define SIOP_ATN 0x08 321 #define SIOP_MSG 0x04 322 #define SIOP_CD 0x02 323 #define SIOP_IO 0x01 324 325 #define SIOP_PHASE(socl) SCSI_PHASE(socl) 326 327 /* Scsi first byte received register (sfbr) */ 328 329 /* Scsi input data latch register (sidl) */ 330 331 /* Scsi bus data lines register (sbdl) */ 332 333 /* Scsi bus control lines register (sbcl). Same as socl */ 334 335 /* DMA status register (dstat) */ 336 337 #define SIOP_DSTAT_DFE 0x80 /* DMA FIFO empty */ 338 #ifndef ARCH_720 339 #define SIOP_DSTAT_RES 0x40 340 #else 341 #define SIOP_DSTAT_HPE 0x40 /* Host Parity Error */ 342 #endif 343 #define SIOP_DSTAT_BF 0x20 /* Bus fault */ 344 #define SIOP_DSTAT_ABRT 0x10 /* Aborted */ 345 #define SIOP_DSTAT_SSI 0x08 /* SCRIPT Single Step */ 346 #define SIOP_DSTAT_SIR 0x04 /* SCRIPT Interrupt Instruction */ 347 #define SIOP_DSTAT_WTD 0x02 /* Watchdog Timeout Detected */ 348 #define SIOP_DSTAT_IID 0x01 /* Invalid Instruction Detected */ 349 350 /* Scsi status register 0 (sstat0) */ 351 352 #ifndef ARCH_720 353 #define SIOP_SSTAT0_M_A 0x80 /* Phase Mismatch or ATN active */ 354 #define SIOP_SSTAT0_FCMP 0x40 /* Function Complete */ 355 #define SIOP_SSTAT0_STO 0x20 /* (Re)Selection timeout */ 356 #define SIOP_SSTAT0_SEL 0x10 /* (Re)Selected */ 357 #define SIOP_SSTAT0_SGE 0x08 /* SCSI Gross Error */ 358 #define SIOP_SSTAT0_UDC 0x04 /* Unexpected Disconnect */ 359 #define SIOP_SSTAT0_RST 0x02 /* RST asserted */ 360 #define SIOP_SSTAT0_PAR 0x01 /* Parity Error */ 361 #else 362 #define SIOP_SSTAT0_ILF 0x80 /* SIDL lsb full */ 363 #define SIOP_SSTAT0_ORF 0x40 /* SODR lsb full */ 364 #define SIOP_SSTAT0_OLF 0x20 /* SODL lsb full */ 365 #define SIOP_SSTAT0_AIP 0x10 /* Arbitration in progress */ 366 #define SIOP_SSTAT0_LOA 0x08 /* Lost Arbitration */ 367 #define SIOP_SSTAT0_WOA 0x04 /* Won Arbitration */ 368 #define SIOP_SSTAT0_RST 0x02 /* SCSI RST/ signal */ 369 #define SIOP_SSTAT0_SDP0 0x01 /* SCSI SDP0/ parity signal */ 370 #endif 371 372 /* Scsi status register 1 (sstat1) */ 373 374 #ifndef ARCH_720 375 #define SIOP_SSTAT1_ILF 0x80 /* Input latch (sidl) full */ 376 #define SIOP_SSTAT1_ORF 0x40 /* output reg (sodr) full */ 377 #define SIOP_SSTAT1_OLF 0x20 /* output latch (sodl) full */ 378 #define SIOP_SSTAT1_AIP 0x10 /* Arbitration in progress */ 379 #define SIOP_SSTAT1_LOA 0x08 /* Lost arbitration */ 380 #define SIOP_SSTAT1_WOA 0x04 /* Won arbitration */ 381 #define SIOP_SSTAT1_RST 0x02 /* SCSI RST current value */ 382 #define SIOP_SSTAT1_SDP 0x01 /* SCSI SDP current value */ 383 #else 384 #define SIOP_SSTAT1_FF 0xf0 /* SCSI FIFO flags (bytecount) */ 385 #define SIOP_SSTAT1_SDP0 0x08 /* Latched (on REQ) SCSI Parity */ 386 #define SIOP_SSTAT1_MSG 0x04 /* Latched SCSI phase */ 387 #define SIOP_SSTAT1_CD 0x02 388 #define SIOP_SSTAT1_IO 0x01 389 #endif 390 391 /* Scsi status register 2 (sstat2) */ 392 393 #ifndef ARCH_720 394 #define SIOP_SSTAT2_FF 0xf0 /* SCSI FIFO flags (bytecount) */ 395 # define SIOP_SCSI_FIFO_DEEP 8 396 #define SIOP_SSTAT2_SDP 0x08 /* Latched (on REQ) SCSI SDP */ 397 #define SIOP_SSTAT2_MSG 0x04 /* Latched SCSI phase */ 398 #define SIOP_SSTAT2_CD 0x02 399 #define SIOP_SSTAT2_IO 0x01 400 #else 401 #define SIOP_SSTAT2_ILF1 0x80 /* SIDL msb full */ 402 #define SIOP_SSTAT2_ORF1 0x40 /* SODR msb full */ 403 #define SIOP_SSTAT2_OLF1 0x20 /* SODL msb full */ 404 #define SIOP_SSTAT2_FF4 0x10 /* FIFO flags bit 4 */ 405 #define SIOP_SSTAT2_SPL1 0x08 /* Latched Parity for SD15-8 */ 406 #define SIOP_SSTAT2_DIFF 0x04 /* DIFFSENSE Sense */ 407 #define SIOP_SSTAT2_LDSC 0x02 /* Last Disconnect */ 408 #define SIOP_SSTAT2_SDP1 0x01 /* SCSI SDP1 Parity */ 409 #endif 410 411 /* Chip test register 0 (ctest0) */ 412 413 #ifndef ARCH_720 414 #define SIOP_CTEST0_RES0 0x80 415 #define SIOP_CTEST0_BTD 0x40 /* Byte-to-byte Timer Disable */ 416 #define SIOP_CTEST0_GRP 0x20 /* Generate Receive Parity for Passthrough */ 417 #define SIOP_CTEST0_EAN 0x10 /* Enable Active Negation */ 418 #define SIOP_CTEST0_HSC 0x08 /* Halt SCSI clock */ 419 #define SIOP_CTEST0_ERF 0x04 /* Extend REQ/ACK Filtering */ 420 #define SIOP_CTEST0_RES1 0x02 421 #define SIOP_CTEST0_DDIR 0x01 /* Xfer direction (1-> from SCSI bus) */ 422 #endif 423 424 /* Chip test register 1 (ctest1) */ 425 426 #define SIOP_CTEST1_FMT 0xf0 /* Byte empty in DMA FIFO bottom (high->byte3) */ 427 #define SIOP_CTEST1_FFL 0x0f /* Byte full in DMA FIFO top, same */ 428 429 /* Chip test register 2 (ctest2) */ 430 431 #ifndef ARCH_720 432 #define SIOP_CTEST2_RES 0x80 433 #else 434 #define SIOP_CTETS2_DDIR 0x80 /* Data Transfer Direction */ 435 #endif 436 #define SIOP_CTEST2_SIGP 0x40 /* Signal process */ 437 #ifndef ARCH_720 438 #define SIOP_CTEST2_SOFF 0x20 /* Synch Offset compare (1-> zero Init, max Tgt */ 439 #define SIOP_CTEST2_SFP 0x10 /* SCSI FIFO Parity */ 440 #else 441 #define SIOP_CTEST2_RES5 0x20 442 #define SIOP_CTEST2_RES4 0x10 443 #endif 444 #define SIOP_CTEST2_DFP 0x08 /* DMA FIFO Parity */ 445 #define SIOP_CTEST2_TEOP 0x04 /* True EOP (a-la 5380) */ 446 #define SIOP_CTEST2_DREQ 0x02 /* DREQ status */ 447 #define SIOP_CTEST2_DACK 0x01 /* DACK status */ 448 449 /* Chip test register 3 (ctest3) read-only, top of SCSI FIFO */ 450 451 #ifdef ARCH_720 452 #define SIOP_CTEST3_V 0xf0 /* Chip revision level */ 453 #define SIOP_CTEST3_FLF 0x08 /* Flush DMA FIFO */ 454 #define SIOP_CTEST3_CLF 0x04 /* Clear DMA FIFO */ 455 #define SIOP_CTEST3_FM 0x02 /* Fetch pin mode */ 456 #define SIOP_CTEST3_SM 0x01 /* Snoop pins mode */ 457 #endif 458 459 /* Chip test register 4 (ctest4) */ 460 461 #define SIOP_CTEST4_MUX 0x80 /* Host bus multiplex mode */ 462 #define SIOP_CTEST4_ZMOD 0x40 /* High-impedance outputs */ 463 #define SIOP_CTEST4_SZM 0x20 /* ditto, SCSI "outputs" */ 464 #ifndef ARCH_720 465 #define SIOP_CTEST4_SLBE 0x10 /* SCSI loopback enable */ 466 #define SIOP_CTEST4_SFWR 0x08 /* SCSI FIFO write enable (from sodl) */ 467 #else 468 #define SIOP_CTEST4_SRTM 0x10 /* Shadow Register Test Mode */ 469 #define SIOP_CTEST4_EHPC 0x08 /* Enable Host Parity Check */ 470 #endif 471 #define SIOP_CTEST4_FBL 0x07 /* DMA FIFO Byte Lane select (from ctest6) 472 4->0, .. 7->3 */ 473 474 /* Chip test register 5 (ctest5) */ 475 476 #define SIOP_CTEST5_ADCK 0x80 /* Clock Address Incrementor */ 477 #define SIOP_CTEST5_BBCK 0x40 /* Clock Byte counter */ 478 #ifndef ARCH_720 479 #define SIOP_CTEST5_ROFF 0x20 /* Reset SCSI offset */ 480 #else 481 #define SIOP_CTEST5_RES 0x20 482 #endif 483 #define SIOP_CTEST5_MASR 0x10 /* Master set/reset pulses (of bits 3-0) */ 484 #define SIOP_CTEST5_DDIR 0x08 /* (re)set internal DMA direction */ 485 #ifndef ARCH_720 486 #define SIOP_CTEST5_EOP 0x04 /* (re)set internal EOP */ 487 #define SIOP_CTEST5_DREQ 0x02 /* (re)set internal REQ */ 488 #define SIOP_CTEST5_DACK 0x01 /* (re)set internal ACK */ 489 #else 490 #define SIOP_CTEST5_RAM 0x06 /* SCRIPTS RAM 1-0 */ 491 #define SIOP_CTEST5 RAMEN 0x01 /* RAM Base Address Enable */ 492 #endif 493 494 /* Chip test register 6 (ctest6) DMA FIFO access */ 495 496 /* Chip test register 7 (ctest7) */ 497 498 #ifndef ARCH_720 499 #define SIOP_CTEST7_CDIS 0x80 /* Cache burst disable */ 500 #define SIOP_CTEST7_SC1 0x40 /* Snoop control 1 */ 501 #define SIOP_CTEST7_SC0 0x20 /* Snoop control 0 */ 502 #define SIOP_CTEST7_STD 0x10 /* Selection timeout disable */ 503 #define SIOP_CTEST7_DFP 0x08 /* DMA FIFO parity bit */ 504 #define SIOP_CTEST7_EVP 0x04 /* Even parity (to host bus) */ 505 #define SIOP_CTEST7_TT1 0x02 /* Transfer type bit */ 506 #define SIOP_CTEST7_DIFF 0x01 /* Differential mode */ 507 #endif 508 509 /* DMA FIFO register (dfifo) */ 510 511 #define SIOP_DFIFO_RES 0x80 512 #define SIOP_DFIFO_BO 0x7f /* FIFO byte offset counter */ 513 514 /* Interrupt status register (istat) */ 515 516 #define SIOP_ISTAT_ABRT 0x80 /* Abort operation */ 517 #define SIOP_ISTAT_RST 0x40 /* Software reset */ 518 #define SIOP_ISTAT_SIGP 0x20 /* Signal process */ 519 #ifndef ARCH_720 520 #define SIOP_ISTAT_RES 0x10 521 #else 522 #define SIOP_ISTAT_SEM 0x10 /* Semaphore */ 523 #endif 524 #define SIOP_ISTAT_CON 0x08 /* Connected */ 525 #ifndef ARCH_720 526 #define SIOP_ISTAT_RES1 0x04 527 #else 528 #define SIOP_ISTAT_INTF 0x04 /* Interrupt on the Fly */ 529 #endif 530 #define SIOP_ISTAT_SIP 0x02 /* SCSI Interrupt pending */ 531 #define SIOP_ISTAT_DIP 0x01 /* DMA Interrupt pending */ 532 533 /* Chip test register 8 (ctest8) */ 534 535 #define SIOP_CTEST8_V 0xf0 /* Chip revision level */ 536 #define SIOP_CTEST8_FLF 0x08 /* Flush DMA FIFO */ 537 #define SIOP_CTEST8_CLF 0x04 /* Clear DMA and SCSI FIFOs */ 538 #define SIOP_CTEST8_FM 0x02 /* Fetch pin mode */ 539 #define SIOP_CTEST8_SM 0x01 /* Snoop pins mode */ 540 541 /* DMA Mode register (dmode) */ 542 543 #define SIOP_DMODE_BL_MASK 0xc0 /* 0->1 1->2 2->4 3->8 */ 544 #define SIOP_DMODE_FC 0x30 /* Function code */ 545 #define SIOP_DMODE_PD 0x08 /* Program/data */ 546 #define SIOP_DMODE_FAM 0x04 /* Fixed address mode */ 547 #define SIOP_DMODE_U0 0x02 /* User programmable transfer type */ 548 #define SIOP_DMODE_MAN 0x01 /* Manual start mode */ 549 550 /* DMA interrupt enable register (dien) */ 551 552 #define SIOP_DIEN_RES 0xc0 553 #ifdef ARCH_720 554 #define SIOP_DIEN_HPED 0x40 /* Host Parity */ 555 #endif 556 #define SIOP_DIEN_BF 0x20 /* On Bus Fault */ 557 #define SIOP_DIEN_ABRT 0x10 /* On Abort */ 558 #define SIOP_DIEN_SSI 0x08 /* On SCRIPTS sstep */ 559 #define SIOP_DIEN_SIR 0x04 /* On SCRIPTS intr instruction */ 560 #define SIOP_DIEN_WTD 0x02 /* On watchdog timeout */ 561 #define SIOP_DIEN_IID 0x01 /* On illegal instruction detected */ 562 563 /* DMA control register (dcntl) */ 564 565 #ifndef ARCH_720 566 #define SIOP_DCNTL_CF_MASK 0xc0 /* Clock frequency dividers: 567 0 --> 37.51..50.00 MHz, div=2 568 1 --> 25.01..37.50 MHz, div=1.5 569 2 --> 16.67..25.00 MHz, div=1 570 3 --> 50.01..66.67 MHz, div=3 571 */ 572 #else 573 #define SIOP_DCNTL_STE 0x80 /* Size Throttle Enable */ 574 #define SIOP_DCNTL_BSM 0x40 /* Bus Mode */ 575 #endif 576 #define SIOP_DCNTL_EA 0x20 /* Enable ack */ 577 #define SIOP_DCNTL_SSM 0x10 /* Single step mode */ 578 #ifndef ARCH_720 579 #define SIOP_DCNTL_LLM 0x08 /* Enable SCSI Low-level mode */ 580 #else 581 #define SIOP_DCNTL_BW16 0x8 /* Bus Width 16 */ 582 #endif 583 #define SIOP_DCNTL_STD 0x04 /* Start DMA operation */ 584 #define SIOP_DCNTL_FA 0x02 /* Fast arbitration */ 585 #define SIOP_DCNTL_COM 0x01 /* 53C700 compatibility */ 586