am79c930.c revision 1.13 1 1.13 perry /* $NetBSD: am79c930.c,v 1.13 2005/02/27 00:27:00 perry Exp $ */
2 1.2 sommerfe
3 1.1 sommerfe /*-
4 1.1 sommerfe * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 1.1 sommerfe * All rights reserved.
6 1.1 sommerfe *
7 1.1 sommerfe * This code is derived from software contributed to The NetBSD Foundation
8 1.1 sommerfe * by Bill Sommerfeld
9 1.1 sommerfe *
10 1.1 sommerfe * Redistribution and use in source and binary forms, with or without
11 1.1 sommerfe * modification, are permitted provided that the following conditions
12 1.1 sommerfe * are met:
13 1.1 sommerfe * 1. Redistributions of source code must retain the above copyright
14 1.1 sommerfe * notice, this list of conditions and the following disclaimer.
15 1.1 sommerfe * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 sommerfe * notice, this list of conditions and the following disclaimer in the
17 1.1 sommerfe * documentation and/or other materials provided with the distribution.
18 1.1 sommerfe * 3. All advertising materials mentioning features or use of this software
19 1.1 sommerfe * must display the following acknowledgement:
20 1.1 sommerfe * This product includes software developed by the NetBSD
21 1.1 sommerfe * Foundation, Inc. and its contributors.
22 1.1 sommerfe * 4. Neither the name of The NetBSD Foundation nor the names of its
23 1.1 sommerfe * contributors may be used to endorse or promote products derived
24 1.1 sommerfe * from this software without specific prior written permission.
25 1.1 sommerfe *
26 1.1 sommerfe * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 1.1 sommerfe * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 1.1 sommerfe * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 1.1 sommerfe * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 1.1 sommerfe * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 1.1 sommerfe * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 1.1 sommerfe * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 1.1 sommerfe * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 1.1 sommerfe * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 1.1 sommerfe * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 1.1 sommerfe * POSSIBILITY OF SUCH DAMAGE.
37 1.1 sommerfe */
38 1.1 sommerfe
39 1.1 sommerfe /*
40 1.1 sommerfe * Am79c930 chip driver.
41 1.1 sommerfe *
42 1.1 sommerfe * This is used by the awi driver to use the shared
43 1.1 sommerfe * memory attached to the 79c930 to communicate with the firmware running
44 1.1 sommerfe * in the 930's on-board 80188 core.
45 1.1 sommerfe *
46 1.1 sommerfe * The 79c930 can be mapped into just I/O space, or also have a
47 1.1 sommerfe * memory mapping; the mapping must be set up by the bus front-end
48 1.1 sommerfe * before am79c930_init is called.
49 1.1 sommerfe */
50 1.1 sommerfe
51 1.1 sommerfe /*
52 1.1 sommerfe * operations:
53 1.1 sommerfe *
54 1.1 sommerfe * read_8, read_16, read_32, read_64, read_bytes
55 1.1 sommerfe * write_8, write_16, write_32, write_64, write_bytes
56 1.1 sommerfe * (two versions, depending on whether memory-space or i/o space is in use).
57 1.1 sommerfe *
58 1.1 sommerfe * interrupt E.C.
59 1.1 sommerfe * start isr
60 1.1 sommerfe * end isr
61 1.1 sommerfe */
62 1.7 lukem
63 1.7 lukem #include <sys/cdefs.h>
64 1.9 onoe #ifdef __NetBSD__
65 1.13 perry __KERNEL_RCSID(0, "$NetBSD: am79c930.c,v 1.13 2005/02/27 00:27:00 perry Exp $");
66 1.9 onoe #endif
67 1.9 onoe #ifdef __FreeBSD__
68 1.9 onoe __FBSDID("$FreeBSD$");
69 1.9 onoe #endif
70 1.1 sommerfe
71 1.1 sommerfe #include <sys/param.h>
72 1.1 sommerfe #include <sys/systm.h>
73 1.9 onoe #include <sys/endian.h>
74 1.4 onoe #ifndef __FreeBSD__
75 1.1 sommerfe #include <sys/device.h>
76 1.4 onoe #endif
77 1.1 sommerfe
78 1.1 sommerfe #include <machine/cpu.h>
79 1.4 onoe #ifdef __FreeBSD__
80 1.4 onoe #include <machine/bus_pio.h>
81 1.4 onoe #include <machine/bus_memio.h>
82 1.4 onoe #endif
83 1.1 sommerfe #include <machine/bus.h>
84 1.4 onoe #ifdef __NetBSD__
85 1.1 sommerfe #include <machine/intr.h>
86 1.4 onoe #endif
87 1.1 sommerfe
88 1.4 onoe #ifdef __NetBSD__
89 1.1 sommerfe #include <dev/ic/am79c930reg.h>
90 1.1 sommerfe #include <dev/ic/am79c930var.h>
91 1.4 onoe #endif
92 1.4 onoe #ifdef __FreeBSD__
93 1.4 onoe #include <dev/awi/am79c930reg.h>
94 1.4 onoe #include <dev/awi/am79c930var.h>
95 1.4 onoe #endif
96 1.1 sommerfe
97 1.4 onoe #define AM930_DELAY(x) /*nothing*/
98 1.1 sommerfe
99 1.12 jmc #ifndef __BUS_SPACE_HAS_STREAM_METHODS
100 1.12 jmc #define bus_space_read_stream_2 bus_space_read_2
101 1.12 jmc #define bus_space_read_stream_4 bus_space_read_4
102 1.12 jmc #define bus_space_write_stream_2 bus_space_write_2
103 1.12 jmc #define bus_space_write_stream_4 bus_space_write_4
104 1.12 jmc #endif /* __BUS_SPACE_HAS_STREAM_METHODS */
105 1.12 jmc
106 1.9 onoe void am79c930_regdump(struct am79c930_softc *sc);
107 1.1 sommerfe
108 1.9 onoe static void io_write_1(struct am79c930_softc *, u_int32_t, u_int8_t);
109 1.9 onoe static void io_write_2(struct am79c930_softc *, u_int32_t, u_int16_t);
110 1.9 onoe static void io_write_4(struct am79c930_softc *, u_int32_t, u_int32_t);
111 1.9 onoe static void io_write_bytes(struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
112 1.9 onoe
113 1.9 onoe static u_int8_t io_read_1(struct am79c930_softc *, u_int32_t);
114 1.9 onoe static u_int16_t io_read_2(struct am79c930_softc *, u_int32_t);
115 1.9 onoe static u_int32_t io_read_4(struct am79c930_softc *, u_int32_t);
116 1.9 onoe static void io_read_bytes(struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
117 1.9 onoe
118 1.9 onoe static void mem_write_1(struct am79c930_softc *, u_int32_t, u_int8_t);
119 1.9 onoe static void mem_write_2(struct am79c930_softc *, u_int32_t, u_int16_t);
120 1.9 onoe static void mem_write_4(struct am79c930_softc *, u_int32_t, u_int32_t);
121 1.9 onoe static void mem_write_bytes(struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
122 1.9 onoe
123 1.9 onoe static u_int8_t mem_read_1(struct am79c930_softc *, u_int32_t);
124 1.9 onoe static u_int16_t mem_read_2(struct am79c930_softc *, u_int32_t);
125 1.9 onoe static u_int32_t mem_read_4(struct am79c930_softc *, u_int32_t);
126 1.9 onoe static void mem_read_bytes(struct am79c930_softc *, u_int32_t, u_int8_t *, size_t);
127 1.1 sommerfe
128 1.1 sommerfe static struct am79c930_ops iospace_ops = {
129 1.1 sommerfe io_write_1,
130 1.1 sommerfe io_write_2,
131 1.1 sommerfe io_write_4,
132 1.1 sommerfe io_write_bytes,
133 1.1 sommerfe io_read_1,
134 1.1 sommerfe io_read_2,
135 1.1 sommerfe io_read_4,
136 1.1 sommerfe io_read_bytes
137 1.1 sommerfe };
138 1.1 sommerfe
139 1.1 sommerfe struct am79c930_ops memspace_ops = {
140 1.1 sommerfe mem_write_1,
141 1.1 sommerfe mem_write_2,
142 1.1 sommerfe mem_write_4,
143 1.1 sommerfe mem_write_bytes,
144 1.1 sommerfe mem_read_1,
145 1.1 sommerfe mem_read_2,
146 1.1 sommerfe mem_read_4,
147 1.1 sommerfe mem_read_bytes
148 1.1 sommerfe };
149 1.1 sommerfe
150 1.9 onoe static void
151 1.9 onoe io_write_1( struct am79c930_softc *sc, u_int32_t off, u_int8_t val)
152 1.1 sommerfe {
153 1.1 sommerfe AM930_DELAY(1);
154 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
155 1.1 sommerfe ((off>>8)& 0x7f));
156 1.1 sommerfe AM930_DELAY(1);
157 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
158 1.1 sommerfe AM930_DELAY(1);
159 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA, val);
160 1.1 sommerfe AM930_DELAY(1);
161 1.1 sommerfe }
162 1.1 sommerfe
163 1.9 onoe static void
164 1.9 onoe io_write_2(struct am79c930_softc *sc, u_int32_t off, u_int16_t val)
165 1.1 sommerfe {
166 1.3 sommerfe AM930_DELAY(1);
167 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
168 1.3 sommerfe ((off>>8)& 0x7f));
169 1.3 sommerfe AM930_DELAY(1);
170 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
171 1.3 sommerfe AM930_DELAY(1);
172 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA, val & 0xff);
173 1.3 sommerfe AM930_DELAY(1);
174 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA, (val>>8)&0xff);
175 1.3 sommerfe AM930_DELAY(1);
176 1.1 sommerfe }
177 1.1 sommerfe
178 1.9 onoe static void
179 1.9 onoe io_write_4(struct am79c930_softc *sc, u_int32_t off, u_int32_t val)
180 1.1 sommerfe {
181 1.3 sommerfe AM930_DELAY(1);
182 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
183 1.3 sommerfe ((off>>8)& 0x7f));
184 1.3 sommerfe AM930_DELAY(1);
185 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
186 1.3 sommerfe AM930_DELAY(1);
187 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,val & 0xff);
188 1.3 sommerfe AM930_DELAY(1);
189 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>8)&0xff);
190 1.3 sommerfe AM930_DELAY(1);
191 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>16)&0xff);
192 1.3 sommerfe AM930_DELAY(1);
193 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,(val>>24)&0xff);
194 1.3 sommerfe AM930_DELAY(1);
195 1.1 sommerfe }
196 1.1 sommerfe
197 1.9 onoe static void
198 1.9 onoe io_write_bytes(struct am79c930_softc *sc, u_int32_t off, u_int8_t *ptr,
199 1.9 onoe size_t len)
200 1.1 sommerfe {
201 1.1 sommerfe int i;
202 1.3 sommerfe
203 1.3 sommerfe AM930_DELAY(1);
204 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
205 1.3 sommerfe ((off>>8)& 0x7f));
206 1.3 sommerfe AM930_DELAY(1);
207 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_LMA_LO, (off&0xff));
208 1.3 sommerfe AM930_DELAY(1);
209 1.1 sommerfe for (i=0; i<len; i++)
210 1.3 sommerfe bus_space_write_1(sc->sc_iot,sc->sc_ioh,AM79C930_IODPA,ptr[i]);
211 1.1 sommerfe }
212 1.1 sommerfe
213 1.9 onoe static u_int8_t
214 1.9 onoe io_read_1(struct am79c930_softc *sc, u_int32_t off)
215 1.1 sommerfe {
216 1.1 sommerfe u_int8_t val;
217 1.9 onoe
218 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
219 1.1 sommerfe ((off>>8)& 0x7f));
220 1.1 sommerfe AM930_DELAY(1);
221 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
222 1.1 sommerfe AM930_DELAY(1);
223 1.1 sommerfe val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
224 1.1 sommerfe AM930_DELAY(1);
225 1.1 sommerfe return val;
226 1.1 sommerfe }
227 1.1 sommerfe
228 1.9 onoe static u_int16_t
229 1.9 onoe io_read_2(struct am79c930_softc *sc, u_int32_t off)
230 1.1 sommerfe {
231 1.3 sommerfe u_int16_t val;
232 1.3 sommerfe
233 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
234 1.3 sommerfe ((off>>8)& 0x7f));
235 1.3 sommerfe AM930_DELAY(1);
236 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
237 1.3 sommerfe AM930_DELAY(1);
238 1.3 sommerfe val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
239 1.3 sommerfe AM930_DELAY(1);
240 1.3 sommerfe val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 8;
241 1.13 perry AM930_DELAY(1);
242 1.3 sommerfe return val;
243 1.1 sommerfe }
244 1.1 sommerfe
245 1.9 onoe static u_int32_t
246 1.9 onoe io_read_4(struct am79c930_softc *sc, u_int32_t off)
247 1.1 sommerfe {
248 1.3 sommerfe u_int32_t val;
249 1.3 sommerfe
250 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
251 1.3 sommerfe ((off>>8)& 0x7f));
252 1.3 sommerfe AM930_DELAY(1);
253 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
254 1.3 sommerfe AM930_DELAY(1);
255 1.3 sommerfe val = bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA);
256 1.3 sommerfe AM930_DELAY(1);
257 1.3 sommerfe val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 8;
258 1.13 perry AM930_DELAY(1);
259 1.3 sommerfe val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 16;
260 1.13 perry AM930_DELAY(1);
261 1.3 sommerfe val |= bus_space_read_1(sc->sc_iot, sc->sc_ioh, AM79C930_IODPA) << 24;
262 1.13 perry AM930_DELAY(1);
263 1.3 sommerfe return val;
264 1.1 sommerfe }
265 1.1 sommerfe
266 1.9 onoe static void
267 1.9 onoe io_read_bytes(struct am79c930_softc *sc, u_int32_t off, u_int8_t *ptr,
268 1.9 onoe size_t len)
269 1.1 sommerfe {
270 1.1 sommerfe int i;
271 1.13 perry
272 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_HI,
273 1.3 sommerfe ((off>>8)& 0x7f));
274 1.3 sommerfe AM930_DELAY(1);
275 1.3 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_LMA_LO, (off&0xff));
276 1.3 sommerfe AM930_DELAY(1);
277 1.13 perry for (i=0; i<len; i++)
278 1.3 sommerfe ptr[i] = bus_space_read_1(sc->sc_iot, sc->sc_ioh,
279 1.3 sommerfe AM79C930_IODPA);
280 1.1 sommerfe }
281 1.1 sommerfe
282 1.9 onoe static void
283 1.9 onoe mem_write_1(struct am79c930_softc *sc, u_int32_t off, u_int8_t val)
284 1.1 sommerfe {
285 1.1 sommerfe bus_space_write_1(sc->sc_memt, sc->sc_memh, off, val);
286 1.1 sommerfe }
287 1.1 sommerfe
288 1.10 dyoung static void
289 1.10 dyoung mem_write_2(struct am79c930_softc *sc, u_int32_t off, u_int16_t val)
290 1.1 sommerfe {
291 1.5 onoe bus_space_tag_t t = sc->sc_memt;
292 1.5 onoe bus_space_handle_t h = sc->sc_memh;
293 1.5 onoe
294 1.5 onoe /* could be unaligned */
295 1.5 onoe if ((off & 0x1) == 0)
296 1.11 dyoung bus_space_write_stream_2(t, h, off, htole16(val));
297 1.5 onoe else {
298 1.5 onoe bus_space_write_1(t, h, off, val & 0xff);
299 1.5 onoe bus_space_write_1(t, h, off+1, (val >> 8) & 0xff);
300 1.5 onoe }
301 1.1 sommerfe }
302 1.1 sommerfe
303 1.9 onoe static void
304 1.9 onoe mem_write_4(struct am79c930_softc *sc, u_int32_t off, u_int32_t val)
305 1.1 sommerfe {
306 1.5 onoe bus_space_tag_t t = sc->sc_memt;
307 1.5 onoe bus_space_handle_t h = sc->sc_memh;
308 1.5 onoe
309 1.5 onoe /* could be unaligned */
310 1.5 onoe if ((off & 0x3) == 0)
311 1.11 dyoung bus_space_write_stream_4(t, h, off, htole32(val));
312 1.5 onoe else {
313 1.5 onoe bus_space_write_1(t, h, off, val & 0xff);
314 1.5 onoe bus_space_write_1(t, h, off+1, (val >> 8) & 0xff);
315 1.5 onoe bus_space_write_1(t, h, off+2, (val >> 16) & 0xff);
316 1.5 onoe bus_space_write_1(t, h, off+3, (val >> 24) & 0xff);
317 1.5 onoe }
318 1.1 sommerfe }
319 1.1 sommerfe
320 1.9 onoe static void
321 1.9 onoe mem_write_bytes(struct am79c930_softc *sc, u_int32_t off, u_int8_t *ptr,
322 1.9 onoe size_t len)
323 1.1 sommerfe {
324 1.3 sommerfe bus_space_write_region_1 (sc->sc_memt, sc->sc_memh, off, ptr, len);
325 1.1 sommerfe }
326 1.1 sommerfe
327 1.9 onoe static u_int8_t
328 1.9 onoe mem_read_1(struct am79c930_softc *sc, u_int32_t off)
329 1.1 sommerfe {
330 1.1 sommerfe return bus_space_read_1(sc->sc_memt, sc->sc_memh, off);
331 1.1 sommerfe }
332 1.1 sommerfe
333 1.9 onoe static u_int16_t
334 1.9 onoe mem_read_2(struct am79c930_softc *sc, u_int32_t off)
335 1.1 sommerfe {
336 1.5 onoe /* could be unaligned */
337 1.5 onoe if ((off & 0x1) == 0)
338 1.11 dyoung return le16toh(bus_space_read_stream_2(sc->sc_memt,
339 1.11 dyoung sc->sc_memh, off));
340 1.5 onoe else
341 1.5 onoe return
342 1.5 onoe bus_space_read_1(sc->sc_memt, sc->sc_memh, off ) |
343 1.5 onoe (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+1) << 8);
344 1.1 sommerfe }
345 1.1 sommerfe
346 1.9 onoe static u_int32_t
347 1.9 onoe mem_read_4(struct am79c930_softc *sc, u_int32_t off)
348 1.1 sommerfe {
349 1.5 onoe /* could be unaligned */
350 1.5 onoe if ((off & 0x3) == 0)
351 1.11 dyoung return le32toh(bus_space_read_stream_4(sc->sc_memt, sc->sc_memh,
352 1.11 dyoung off));
353 1.5 onoe else
354 1.5 onoe return
355 1.5 onoe bus_space_read_1(sc->sc_memt, sc->sc_memh, off ) |
356 1.5 onoe (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+1) << 8) |
357 1.5 onoe (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+2) <<16) |
358 1.5 onoe (bus_space_read_1(sc->sc_memt, sc->sc_memh, off+3) <<24);
359 1.1 sommerfe }
360 1.1 sommerfe
361 1.9 onoe static void
362 1.9 onoe mem_read_bytes(struct am79c930_softc *sc, u_int32_t off, u_int8_t *ptr,
363 1.9 onoe size_t len)
364 1.1 sommerfe {
365 1.3 sommerfe bus_space_read_region_1 (sc->sc_memt, sc->sc_memh, off, ptr, len);
366 1.1 sommerfe }
367 1.1 sommerfe
368 1.1 sommerfe
369 1.1 sommerfe /*
370 1.1 sommerfe * Set bits in GCR.
371 1.1 sommerfe */
372 1.1 sommerfe
373 1.9 onoe void
374 1.9 onoe am79c930_gcr_setbits(struct am79c930_softc *sc, u_int8_t bits)
375 1.1 sommerfe {
376 1.1 sommerfe u_int8_t gcr = bus_space_read_1 (sc->sc_iot, sc->sc_ioh, AM79C930_GCR);
377 1.1 sommerfe
378 1.1 sommerfe gcr |= bits;
379 1.13 perry
380 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_GCR, gcr);
381 1.1 sommerfe }
382 1.1 sommerfe
383 1.1 sommerfe /*
384 1.1 sommerfe * Clear bits in GCR.
385 1.1 sommerfe */
386 1.1 sommerfe
387 1.9 onoe void
388 1.9 onoe am79c930_gcr_clearbits(struct am79c930_softc *sc, u_int8_t bits)
389 1.1 sommerfe {
390 1.1 sommerfe u_int8_t gcr = bus_space_read_1 (sc->sc_iot, sc->sc_ioh, AM79C930_GCR);
391 1.1 sommerfe
392 1.1 sommerfe gcr &= ~bits;
393 1.13 perry
394 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_GCR, gcr);
395 1.1 sommerfe }
396 1.1 sommerfe
397 1.9 onoe u_int8_t
398 1.9 onoe am79c930_gcr_read(struct am79c930_softc *sc)
399 1.1 sommerfe {
400 1.1 sommerfe return bus_space_read_1 (sc->sc_iot, sc->sc_ioh, AM79C930_GCR);
401 1.1 sommerfe }
402 1.1 sommerfe
403 1.13 perry #if 0
404 1.9 onoe void
405 1.9 onoe am79c930_regdump(struct am79c930_softc *sc)
406 1.1 sommerfe {
407 1.1 sommerfe u_int8_t buf[8];
408 1.1 sommerfe int i;
409 1.1 sommerfe
410 1.1 sommerfe AM930_DELAY(5);
411 1.1 sommerfe for (i=0; i<8; i++) {
412 1.1 sommerfe buf[i] = bus_space_read_1 (sc->sc_iot, sc->sc_ioh, i);
413 1.1 sommerfe AM930_DELAY(5);
414 1.1 sommerfe }
415 1.1 sommerfe printf("am79c930: regdump:");
416 1.1 sommerfe for (i=0; i<8; i++) {
417 1.1 sommerfe printf(" %02x", buf[i]);
418 1.1 sommerfe }
419 1.1 sommerfe printf("\n");
420 1.1 sommerfe }
421 1.1 sommerfe #endif
422 1.1 sommerfe
423 1.9 onoe void
424 1.9 onoe am79c930_chip_init(struct am79c930_softc *sc, int how)
425 1.1 sommerfe {
426 1.1 sommerfe /* zero the bank select register, and leave it that way.. */
427 1.1 sommerfe bus_space_write_1(sc->sc_iot, sc->sc_ioh, AM79C930_BSS, 0);
428 1.1 sommerfe if (how)
429 1.1 sommerfe sc->sc_ops = &memspace_ops;
430 1.1 sommerfe else
431 1.1 sommerfe sc->sc_ops = &iospace_ops;
432 1.1 sommerfe }
433