FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/osiopreg.h
1 /* $OpenBSD: osiopreg.h,v 1.5 2005/11/21 21:52:47 miod Exp $ */
2 /* $NetBSD: osiopreg.h,v 1.1 2001/04/30 04:47:51 tsutsui 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 53C710 SCSI interface hardware description.
40 *
41 * From the Mach scsi driver for the 53C710 and amiga siop driver
42 */
43
44 /* byte lane definitions */
45 #if BYTE_ORDER == LITTLE_ENDIAN
46 #define BL0 0
47 #define BL1 1
48 #define BL2 2
49 #define BL3 3
50 #else
51 #define BL0 3
52 #define BL1 2
53 #define BL2 1
54 #define BL3 0
55 #endif
56
57 #define OSIOP_SCNTL0 (0x00+BL0) /* rw: SCSI control reg 0 */
58 #define OSIOP_SCNTL1 (0x00+BL1) /* rw: SCSI control reg 1 */
59 #define OSIOP_SDID (0x00+BL2) /* rw: SCSI destination ID */
60 #define OSIOP_SIEN (0x00+BL3) /* rw: SCSI interrupt enable */
61
62 #define OSIOP_SCID (0x04+BL0) /* rw: SCSI Chip ID reg */
63 #define OSIOP_SXFER (0x04+BL1) /* rw: SCSI Transfer reg */
64 #define OSIOP_SODL (0x04+BL2) /* rw: SCSI Output Data Latch */
65 #define OSIOP_SOCL (0x04+BL3) /* rw: SCSI Output Control Latch */
66
67 #define OSIOP_SFBR (0x08+BL0) /* ro: SCSI First Byte Received */
68 #define OSIOP_SIDL (0x08+BL1) /* ro: SCSI Input Data Latch */
69 #define OSIOP_SBDL (0x08+BL2) /* ro: SCSI Bus Data Lines */
70 #define OSIOP_SBCL (0x08+BL3) /* rw: SCSI Bus Control Lines */
71
72 #define OSIOP_DSTAT (0x0c+BL0) /* ro: DMA status */
73 #define OSIOP_SSTAT0 (0x0c+BL1) /* ro: SCSI status reg 0 */
74 #define OSIOP_SSTAT1 (0x0c+BL2) /* ro: SCSI status reg 1 */
75 #define OSIOP_SSTAT2 (0x0c+BL3) /* ro: SCSI status reg 2 */
76
77 #define OSIOP_DSA 0x10 /* rw: Data Structure Address */
78
79 #define OSIOP_CTEST0 (0x14+BL0) /* ro: Chip test register 0 */
80 #define OSIOP_CTEST1 (0x14+BL1) /* ro: Chip test register 1 */
81 #define OSIOP_CTEST2 (0x14+BL2) /* ro: Chip test register 2 */
82 #define OSIOP_CTEST3 (0x14+BL3) /* ro: Chip test register 3 */
83
84 #define OSIOP_CTEST4 (0x18+BL0) /* rw: Chip test register 4 */
85 #define OSIOP_CTEST5 (0x18+BL1) /* rw: Chip test register 5 */
86 #define OSIOP_CTEST6 (0x18+BL2) /* rw: Chip test register 6 */
87 #define OSIOP_CTEST7 (0x18+BL3) /* rw: Chip test register 7 */
88
89 #define OSIOP_TEMP 0x1c /* rw: Temporary Stack reg */
90
91 #define OSIOP_DFIFO (0x20+BL0) /* rw: DMA FIFO */
92 #define OSIOP_ISTAT (0x20+BL1) /* rw: Interrupt Status reg */
93 #define OSIOP_CTEST8 (0x20+BL2) /* rw: Chip test register 8 */
94 #define OSIOP_LCRC (0x20+BL3) /* rw: LCRC value */
95
96 #define OSIOP_DBC 0x24 /* rw: DMA Counter reg (longword) */
97 #define OSIOP_DBC0 (0x24+BL0) /* rw: DMA Byte Counter reg 0 */
98 #define OSIOP_DBC1 (0x24+BL1) /* rw: DMA Byte Counter reg 1 */
99 #define OSIOP_DBC2 (0x24+BL2) /* rw: DMA Byte Counter reg 2 */
100 #define OSIOP_DCMD (0x24+BL3) /* rw: DMA Command Register */
101
102 #define OSIOP_DNAD 0x28 /* rw: DMA Next Data Address */
103
104 #define OSIOP_DSP 0x2c /* rw: DMA SCRIPTS Pointer reg */
105
106 #define OSIOP_DSPS 0x30 /* rw: DMA SCRIPTS Pointer Save reg */
107
108 #define OSIOP_SCRATCH 0x34 /* rw: Scratch register */
109
110 #define OSIOP_DMODE (0x38+BL0) /* rw: DMA Mode reg */
111 #define OSIOP_DIEN (0x38+BL1) /* rw: DMA Interrupt Enable */
112 #define OSIOP_DWT (0x38+BL2) /* rw: DMA Watchdog Timer */
113 #define OSIOP_DCNTL (0x38+BL3) /* rw: DMA Control reg */
114
115 #define OSIOP_ADDER 0x3c /* ro: Adder Sum Output */
116
117 #define OSIOP_NREGS 0x40
118
119
120 /*
121 * Register defines
122 */
123
124 /* Scsi control register 0 (scntl0) */
125
126 #define OSIOP_SCNTL0_ARB 0xc0 /* Arbitration mode */
127 #define OSIOP_ARB_SIMPLE 0x00
128 #define OSIOP_ARB_FULL 0xc0
129 #define OSIOP_SCNTL0_START 0x20 /* Start Sequence */
130 #define OSIOP_SCNTL0_WATN 0x10 /* (Select) With ATN */
131 #define OSIOP_SCNTL0_EPC 0x08 /* Enable Parity Checking */
132 #define OSIOP_SCNTL0_EPG 0x04 /* Enable Parity Generation */
133 #define OSIOP_SCNTL0_AAP 0x02 /* Assert ATN on Parity Error */
134 #define OSIOP_SCNTL0_TRG 0x01 /* Target Mode */
135
136 /* Scsi control register 1 (scntl1) */
137
138 #define OSIOP_SCNTL1_EXC 0x80 /* Extra Clock Cycle of data setup */
139 #define OSIOP_SCNTL1_ADB 0x40 /* Assert Data Bus */
140 #define OSIOP_SCNTL1_ESR 0x20 /* Enable Selection/Reselection */
141 #define OSIOP_SCNTL1_CON 0x10 /* Connected */
142 #define OSIOP_SCNTL1_RST 0x08 /* Assert RST */
143 #define OSIOP_SCNTL1_AESP 0x04 /* Assert even SCSI parity */
144 #define OSIOP_SCNTL1_PAR 0x04 /* Force bad Parity */
145 #define OSIOP_SCNTL1_RES0 0x02 /* Reserved */
146 #define OSIOP_SCNTL1_RES1 0x01 /* Reserved */
147
148 /* Scsi interrupt enable register (sien) */
149
150 #define OSIOP_SIEN_M_A 0x80 /* Phase Mismatch or ATN active */
151 #define OSIOP_SIEN_FCMP 0x40 /* Function Complete */
152 #define OSIOP_SIEN_STO 0x20 /* (Re)Selection timeout */
153 #define OSIOP_SIEN_SEL 0x10 /* (Re)Selected */
154 #define OSIOP_SIEN_SGE 0x08 /* SCSI Gross Error */
155 #define OSIOP_SIEN_UDC 0x04 /* Unexpected Disconnect */
156 #define OSIOP_SIEN_RST 0x02 /* RST asserted */
157 #define OSIOP_SIEN_PAR 0x01 /* Parity Error */
158
159 /* Scsi chip ID (scid) */
160
161 #define OSIOP_SCID_VALUE(i) (1 << (i))
162
163 /* Scsi transfer register (sxfer) */
164
165 #define OSIOP_SXFER_DHP 0x80 /* Disable Halt on Parity error/
166 ATN asserted */
167 #define OSIOP_SXFER_TP 0x70 /* Synch Transfer Period */
168 /* see specs for formulas:
169 Period = TCP * (4 + XFERP )
170 TCP = 1 + CLK + 1..2;
171 */
172 #define OSIOP_SXFER_MO 0x0f /* Synch Max Offset */
173 #define OSIOP_MAX_OFFSET 8
174
175 /* Scsi output data latch register (sodl) */
176
177 /* Scsi output control latch register (socl) */
178
179 #define OSIOP_REQ 0x80 /* SCSI signal <x> asserted */
180 #define OSIOP_ACK 0x40
181 #define OSIOP_BSY 0x20
182 #define OSIOP_SEL 0x10
183 #define OSIOP_ATN 0x08
184 #define OSIOP_MSG 0x04
185 #define OSIOP_CD 0x02
186 #define OSIOP_IO 0x01
187
188 #define OSIOP_PHASE(x) ((x) & (OSIOP_MSG|OSIOP_CD|OSIOP_IO))
189 #define DATA_OUT_PHASE 0x00
190 #define DATA_IN_PHASE OSIOP_IO
191 #define COMMAND_PHASE OSIOP_CD
192 #define STATUS_PHASE (OSIOP_CD|OSIOP_IO)
193 #define MSG_OUT_PHASE (OSIOP_MSG|OSIOP_CD)
194 #define MSG_IN_PHASE (OSIOP_MSG|OSIOP_CD|OSIOP_IO)
195
196 /* Scsi first byte received register (sfbr) */
197
198 /* Scsi input data latch register (sidl) */
199
200 /* Scsi bus data lines register (sbdl) */
201
202 /* Scsi bus control lines register (sbcl). Same as socl */
203
204 #define OSIOP_SBCL_SSCF1 0x02 /* wo */
205 #define OSIOP_SBCL_SSCF0 0x01 /* wo */
206
207 /* DMA status register (dstat) */
208
209 #define OSIOP_DSTAT_DFE 0x80 /* DMA FIFO empty */
210 #define OSIOP_DSTAT_RES 0x40
211 #define OSIOP_DSTAT_BF 0x20 /* Bus fault */
212 #define OSIOP_DSTAT_ABRT 0x10 /* Aborted */
213 #define OSIOP_DSTAT_SSI 0x08 /* SCRIPT Single Step */
214 #define OSIOP_DSTAT_SIR 0x04 /* SCRIPT Interrupt Instruction */
215 #define OSIOP_DSTAT_WTD 0x02 /* Watchdog Timeout Detected */
216 #define OSIOP_DSTAT_IID 0x01 /* Invalid Instruction Detected */
217
218 /* Scsi status register 0 (sstat0) */
219
220 #define OSIOP_SSTAT0_M_A 0x80 /* Phase Mismatch or ATN active */
221 #define OSIOP_SSTAT0_FCMP 0x40 /* Function Complete */
222 #define OSIOP_SSTAT0_STO 0x20 /* (Re)Selection timeout */
223 #define OSIOP_SSTAT0_SEL 0x10 /* (Re)Selected */
224 #define OSIOP_SSTAT0_SGE 0x08 /* SCSI Gross Error */
225 #define OSIOP_SSTAT0_UDC 0x04 /* Unexpected Disconnect */
226 #define OSIOP_SSTAT0_RST 0x02 /* RST asserted */
227 #define OSIOP_SSTAT0_PAR 0x01 /* Parity Error */
228
229 /* Scsi status register 1 (sstat1) */
230
231 #define OSIOP_SSTAT1_ILF 0x80 /* Input latch (sidl) full */
232 #define OSIOP_SSTAT1_ORF 0x40 /* output reg (sodr) full */
233 #define OSIOP_SSTAT1_OLF 0x20 /* output latch (sodl) full */
234 #define OSIOP_SSTAT1_AIP 0x10 /* Arbitration in progress */
235 #define OSIOP_SSTAT1_LOA 0x08 /* Lost arbitration */
236 #define OSIOP_SSTAT1_WOA 0x04 /* Won arbitration */
237 #define OSIOP_SSTAT1_RST 0x02 /* SCSI RST current value */
238 #define OSIOP_SSTAT1_SDP 0x01 /* SCSI SDP current value */
239
240 /* Scsi status register 2 (sstat2) */
241
242 #define OSIOP_SSTAT2_FF 0xf0 /* SCSI FIFO flags (bytecount) */
243 #define OSIOP_SCSI_FIFO_DEEP 8
244 #define OSIOP_SSTAT2_SDP 0x08 /* Latched (on REQ) SCSI SDP */
245 #define OSIOP_SSTAT2_MSG 0x04 /* Latched SCSI phase */
246 #define OSIOP_SSTAT2_CD 0x02
247 #define OSIOP_SSTAT2_IO 0x01
248
249 /* Chip test register 0 (ctest0) */
250
251 #define OSIOP_CTEST0_RES0 0x80
252 #define OSIOP_CTEST0_BTD 0x40 /* Byte-to-byte Timer Disable */
253 #define OSIOP_CTEST0_GRP 0x20 /* Generate Receive Parity */
254 #define OSIOP_CTEST0_EAN 0x10 /* Enable Active Negation */
255 #define OSIOP_CTEST0_HSC 0x08 /* Halt SCSI clock */
256 #define OSIOP_CTEST0_ERF 0x04 /* Extend REQ/ACK Filtering */
257 #define OSIOP_CTEST0_RES1 0x02
258 #define OSIOP_CTEST0_DDIR 0x01 /* Xfer direction (1-> from SCSI bus) */
259
260
261 /* Chip test register 1 (ctest1) */
262
263 #define OSIOP_CTEST1_FMT 0xf0 /* Byte empty in DMA FIFO bottom
264 (high->byte3) */
265 #define OSIOP_CTEST1_FFL 0x0f /* Byte full in DMA FIFO top, same */
266
267 /* Chip test register 2 (ctest2) */
268
269 #define OSIOP_CTEST2_RES 0x80
270 #define OSIOP_CTEST2_SIGP 0x40 /* Signal process */
271 #define OSIOP_CTEST2_SOFF 0x20 /* Synch Offset compare
272 (1-> zero Init, max Tgt */
273 #define OSIOP_CTEST2_SFP 0x10 /* SCSI FIFO Parity */
274 #define OSIOP_CTEST2_DFP 0x08 /* DMA FIFO Parity */
275 #define OSIOP_CTEST2_TEOP 0x04 /* True EOP (a-la 5380) */
276 #define OSIOP_CTEST2_DREQ 0x02 /* DREQ status */
277 #define OSIOP_CTEST2_DACK 0x01 /* DACK status */
278
279 /* Chip test register 3 (ctest3) read-only, top of SCSI FIFO */
280
281 /* Chip test register 4 (ctest4) */
282
283 #define OSIOP_CTEST4_MUX 0x80 /* Host bus multiplex mode */
284 #define OSIOP_CTEST4_ZMOD 0x40 /* High-impedance outputs */
285 #define OSIOP_CTEST4_SZM 0x20 /* ditto, SCSI "outputs" */
286 #define OSIOP_CTEST4_SLBE 0x10 /* SCSI loopback enable */
287 #define OSIOP_CTEST4_SFWR 0x08 /* SCSI FIFO write enable (from sodl) */
288 #define OSIOP_CTEST4_FBL 0x07 /* DMA FIFO Byte Lane select
289 (from ctest6) 4->0, .. 7->3 */
290
291 /* Chip test register 5 (ctest5) */
292
293 #define OSIOP_CTEST5_ADCK 0x80 /* Clock Address Incrementor */
294 #define OSIOP_CTEST5_BBCK 0x40 /* Clock Byte counter */
295 #define OSIOP_CTEST5_ROFF 0x20 /* Reset SCSI offset */
296 #define OSIOP_CTEST5_MASR 0x10 /* Master set/reset pulses
297 (of bits 3-0) */
298 #define OSIOP_CTEST5_DDIR 0x08 /* (re)set internal DMA direction */
299 #define OSIOP_CTEST5_EOP 0x04 /* (re)set internal EOP */
300 #define OSIOP_CTEST5_DREQ 0x02 /* (re)set internal REQ */
301 #define OSIOP_CTEST5_DACK 0x01 /* (re)set internal ACK */
302
303 /* Chip test register 6 (ctest6) DMA FIFO access */
304
305 /* Chip test register 7 (ctest7) */
306
307 #define OSIOP_CTEST7_CDIS 0x80 /* Cache burst disable */
308 #define OSIOP_CTEST7_SC1 0x40 /* Snoop control 1 */
309 #define OSIOP_CTEST7_SC0 0x20 /* Snoop control 0 */
310 #define OSIOP_CTEST7_STD 0x10 /* Selection timeout disable */
311 #define OSIOP_CTEST7_DFP 0x08 /* DMA FIFO parity bit */
312 #define OSIOP_CTEST7_EVP 0x04 /* Even parity (to host bus) */
313 #define OSIOP_CTEST7_TT1 0x02 /* Transfer type bit */
314 #define OSIOP_CTEST7_DIFF 0x01 /* Differential mode */
315
316 /* DMA FIFO register (dfifo) */
317
318 #define OSIOP_DFIFO_FLF 0x80 /* Flush (spill) DMA FIFO */
319 #define OSIOP_DFIFO_BO 0x7f /* FIFO byte offset counter */
320
321 /* Interrupt status register (istat) */
322
323 #define OSIOP_ISTAT_ABRT 0x80 /* Abort operation */
324 #define OSIOP_ISTAT_RST 0x40 /* Software reset */
325 #define OSIOP_ISTAT_SIGP 0x20 /* Signal process */
326 #define OSIOP_ISTAT_RES 0x10
327 #define OSIOP_ISTAT_CON 0x08 /* Connected */
328 #define OSIOP_ISTAT_RES1 0x04
329 #define OSIOP_ISTAT_SIP 0x02 /* SCSI Interrupt pending */
330 #define OSIOP_ISTAT_DIP 0x01 /* DMA Interrupt pending */
331
332 /* Chip test register 8 (ctest8) */
333
334 #define OSIOP_CTEST8_V 0xf0 /* Chip revision level */
335 #define OSIOP_CTEST8_FLF 0x08 /* Flush DMA FIFO */
336 #define OSIOP_CTEST8_CLF 0x04 /* Clear DMA and SCSI FIFOs */
337 #define OSIOP_CTEST8_FM 0x02 /* Fetch pin mode */
338 #define OSIOP_CTEST8_SM 0x01 /* Snoop pins mode */
339
340 /* DMA Mode register (dmode) */
341
342 #define OSIOP_DMODE_BL_MASK 0xc0 /* DMA burst length */
343 #define OSIOP_DMODE_BL8 0xc0 /* 8 bytes */
344 #define OSIOP_DMODE_BL4 0x80 /* 4 bytes */
345 #define OSIOP_DMODE_BL2 0x40 /* 2 bytes */
346 #define OSIOP_DMODE_BL1 0x00 /* 1 byte */
347 #define OSIOP_DMODE_FC 0x30 /* Function code */
348 #define OSIOP_DMODE_PD 0x08 /* Program/data */
349 #define OSIOP_DMODE_FAM 0x04 /* fixed address mode */
350 #define OSIOP_DMODE_U0 0x02 /* User programmable transfer type */
351 #define OSIOP_DMODE_MAN 0x01 /* SCRIPTS in Manual start mode */
352
353 /* DMA interrupt enable register (dien) */
354
355 #define OSIOP_DIEN_RES 0xc0
356 #define OSIOP_DIEN_BF 0x20 /* On Bus Fault */
357 #define OSIOP_DIEN_ABRT 0x10 /* On Abort */
358 #define OSIOP_DIEN_SSI 0x08 /* On SCRIPTS sstep */
359 #define OSIOP_DIEN_SIR 0x04 /* On SCRIPTS intr instruction */
360 #define OSIOP_DIEN_WTD 0x02 /* On watchdog timeout */
361 #define OSIOP_DIEN_IID 0x01 /* On illegal instruction detected */
362
363 /* DMA control register (dcntl) */
364
365 #define OSIOP_DCNTL_CF_MASK 0xc0 /* Clock frequency dividers: */
366 #define OSIOP_DCNTL_CF_2 0x00 /* 0 --> 37.51..50.00 MHz, div=2 */
367 #define OSIOP_DCNTL_CF_1_5 0x40 /* 1 --> 25.01..37.50 MHz, div=1.5 */
368 #define OSIOP_DCNTL_CF_1 0x80 /* 2 --> 16.67..25.00 MHz, div=1 */
369 #define OSIOP_DCNTL_CF_3 0xc0 /* 3 --> 50.01..66.67 MHz, div=3 */
370 #define OSIOP_DCNTL_EA 0x20 /* Enable ACK */
371 #define OSIOP_DCNTL_SSM 0x10 /* Single step mode */
372 #define OSIOP_DCNTL_LLM 0x08 /* Enable SCSI Low-level mode */
373 #define OSIOP_DCNTL_STD 0x04 /* Start DMA operation */
374 #define OSIOP_DCNTL_FA 0x02 /* Fast arbitration */
375 #define OSIOP_DCNTL_COM 0x01 /* 53C700 Compatibility */
Cache object: 377d8fb8b4e0c312045260262c2f7fe6
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