Annotation of sys/dev/isa/wss_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: wss_isa.c,v 1.5 2006/01/02 05:21:40 brad Exp $ */
2: /* $NetBSD: wss_isa.c,v 1.1 1998/01/19 22:18:24 augustss Exp $ */
3:
4: /*
5: * Copyright (c) 1994 John Brezak
6: * Copyright (c) 1991-1993 Regents of the University of California.
7: * All rights reserved.
8: *
9: * MAD support:
10: * Copyright (c) 1996 Lennart Augustsson
11: * Based on code which is
12: * Copyright (c) 1994 Hannu Savolainen
13: *
14: * Redistribution and use in source and binary forms, with or without
15: * modification, are permitted provided that the following conditions
16: * are met:
17: * 1. Redistributions of source code must retain the above copyright
18: * notice, this list of conditions and the following disclaimer.
19: * 2. Redistributions in binary form must reproduce the above copyright
20: * notice, this list of conditions and the following disclaimer in the
21: * documentation and/or other materials provided with the distribution.
22: * 3. All advertising materials mentioning features or use of this software
23: * must display the following acknowledgement:
24: * This product includes software developed by the Computer Systems
25: * Engineering Group at Lawrence Berkeley Laboratory.
26: * 4. Neither the name of the University nor of the Laboratory may be used
27: * to endorse or promote products derived from this software without
28: * specific prior written permission.
29: *
30: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40: * SUCH DAMAGE.
41: *
42: */
43: #include <sys/param.h>
44: #include <sys/systm.h>
45: #include <sys/errno.h>
46: #include <sys/ioctl.h>
47: #include <sys/syslog.h>
48: #include <sys/device.h>
49: #include <sys/proc.h>
50: #include <sys/buf.h>
51:
52: #include <machine/cpu.h>
53: #include <machine/intr.h>
54: #include <machine/bus.h>
55:
56: #include <sys/audioio.h>
57: #include <dev/audio_if.h>
58:
59: #include <dev/isa/isavar.h>
60: #include <dev/isa/isadmavar.h>
61:
62: #include <dev/ic/ad1848reg.h>
63: #include <dev/isa/ad1848var.h>
64: #include <dev/isa/wssreg.h>
65: #include <dev/isa/wssvar.h>
66: #include <dev/isa/madreg.h>
67:
68: #ifdef AUDIO_DEBUG
69: #define DPRINTF(x) if (wssdebug) printf x
70: extern int wssdebug;
71: #else
72: #define DPRINTF(x)
73: #endif
74:
75: static int wssfind(struct device *, struct wss_softc *, struct isa_attach_args *);
76:
77: static void madprobe(struct wss_softc *, int);
78: static void madunmap(struct wss_softc *);
79: static int detect_mad16(struct wss_softc *, int);
80:
81: int wss_isa_probe(struct device *, void *, void *);
82: void wss_isa_attach(struct device *, struct device *, void *);
83:
84: struct cfattach wss_isa_ca = {
85: sizeof(struct wss_softc), wss_isa_probe, wss_isa_attach
86: };
87:
88: struct cfdriver wss_cd = {
89: NULL, "wss", DV_DULL
90: };
91:
92: /*
93: * Probe for the Microsoft Sound System hardware.
94: */
95: int
96: wss_isa_probe(parent, match, aux)
97: struct device *parent;
98: void *match;
99: void *aux;
100: {
101: struct wss_softc probesc, *sc = &probesc;
102:
103: bzero(sc, sizeof *sc);
104: sc->sc_dev.dv_cfdata = ((struct device *)match)->dv_cfdata;
105: if (wssfind(parent, sc, aux)) {
106: bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC);
107: ad1848_unmap(&sc->sc_ad1848);
108: madunmap(sc);
109: return 1;
110: } else
111: /* Everything is already unmapped */
112: return 0;
113: }
114:
115: static int
116: wssfind(parent, sc, ia)
117: struct device *parent;
118: struct wss_softc *sc;
119: struct isa_attach_args *ia;
120: {
121: static u_char interrupt_bits[12] = {
122: -1, -1, -1, -1, -1, 0x0, -1, 0x08, -1, 0x10, 0x18, 0x20
123: };
124: static u_char dma_bits[4] = {1, 2, 0, 3};
125:
126: sc->sc_iot = ia->ia_iot;
127: if (sc->sc_dev.dv_cfdata->cf_flags & 1)
128: madprobe(sc, ia->ia_iobase);
129: else
130: sc->mad_chip_type = MAD_NONE;
131:
132: if (!WSS_BASE_VALID(ia->ia_iobase)) {
133: DPRINTF(("wss: configured iobase %x invalid\n", ia->ia_iobase));
134: goto bad1;
135: }
136:
137: /* Map the ports upto the AD1848 port */
138: if (bus_space_map(sc->sc_iot, ia->ia_iobase, WSS_CODEC, 0, &sc->sc_ioh))
139: goto bad1;
140:
141: sc->sc_ad1848.sc_iot = sc->sc_iot;
142:
143: /* Is there an ad1848 chip at (WSS iobase + WSS_CODEC)? */
144: if (ad1848_mapprobe(&sc->sc_ad1848, ia->ia_iobase + WSS_CODEC) == 0)
145: goto bad;
146:
147: ia->ia_iosize = WSS_NPORT;
148:
149: /* Setup WSS interrupt and DMA */
150: if (!WSS_DRQ_VALID(ia->ia_drq)) {
151: DPRINTF(("wss: configured dma chan %d invalid\n", ia->ia_drq));
152: goto bad;
153: }
154: sc->wss_drq = ia->ia_drq;
155:
156: if (sc->wss_drq != DRQUNK && !isa_drq_isfree(parent, sc->wss_drq))
157: goto bad;
158:
159: if (!WSS_IRQ_VALID(ia->ia_irq)) {
160: DPRINTF(("wss: configured interrupt %d invalid\n", ia->ia_irq));
161: goto bad;
162: }
163:
164: sc->wss_irq = ia->ia_irq;
165:
166: if (sc->sc_ad1848.mode <= 1)
167: ia->ia_drq2 = DRQUNK;
168: sc->wss_recdrq =
169: sc->sc_ad1848.mode > 1 && ia->ia_drq2 != DRQUNK ?
170: ia->ia_drq2 : ia->ia_drq;
171: if (sc->wss_recdrq != sc->wss_drq && !isa_drq_isfree(parent, sc->wss_recdrq))
172: goto bad;
173:
174: /* XXX recdrq */
175: bus_space_write_1(sc->sc_iot, sc->sc_ioh, WSS_CONFIG,
176: (interrupt_bits[ia->ia_irq] | dma_bits[ia->ia_drq]));
177:
178: return 1;
179:
180: bad:
181: bus_space_unmap(sc->sc_iot, sc->sc_ioh, WSS_CODEC);
182: bad1:
183: madunmap(sc);
184: return 0;
185: }
186:
187: /*
188: * Attach hardware to driver, attach hardware driver to audio
189: * pseudo-device driver .
190: */
191: void
192: wss_isa_attach(parent, self, aux)
193: struct device *parent, *self;
194: void *aux;
195: {
196: struct wss_softc *sc = (struct wss_softc *)self;
197: struct isa_attach_args *ia = (struct isa_attach_args *)aux;
198:
199: if (!wssfind(parent, sc, ia)) {
200: printf("%s: wssfind failed\n", sc->sc_dev.dv_xname);
201: return;
202: }
203:
204: sc->sc_ic = ia->ia_ic;
205: sc->sc_ad1848.sc_isa = parent;
206:
207: wssattach(sc);
208: }
209:
210: /*
211: * Copyright by Hannu Savolainen 1994
212: *
213: * Redistribution and use in source and binary forms, with or without
214: * modification, are permitted provided that the following conditions are
215: * met: 1. Redistributions of source code must retain the above copyright
216: * notice, this list of conditions and the following disclaimer. 2.
217: * Redistributions in binary form must reproduce the above copyright notice,
218: * this list of conditions and the following disclaimer in the documentation
219: * and/or other materials provided with the distribution.
220: *
221: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY
222: * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
223: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
224: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
225: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
226: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
227: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
228: * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
229: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
230: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
231: * SUCH DAMAGE.
232: *
233: */
234:
235: /*
236: * Initialization code for OPTi MAD16 compatible audio chips. Including
237: *
238: * OPTi 82C928 MAD16 (replaced by C929)
239: * OAK OTI-601D Mozart
240: * OPTi 82C929 MAD16 Pro
241: * OPTi 82C931
242: */
243:
244: static int
245: detect_mad16(sc, chip_type)
246: struct wss_softc *sc;
247: int chip_type;
248: {
249: unsigned char tmp, tmp2;
250:
251: sc->mad_chip_type = chip_type;
252: /*
253: * Check that reading a register doesn't return bus float (0xff)
254: * when the card is accessed using password. This may fail in case
255: * the card is in low power mode. Normally at least the power saving mode
256: * bit should be 0.
257: */
258: if ((tmp = mad_read(sc, MC1_PORT)) == 0xff) {
259: DPRINTF(("MC1_PORT returned 0xff\n"));
260: return 0;
261: }
262:
263: /*
264: * Now check that the gate is closed on first I/O after writing
265: * the password. (This is how a MAD16 compatible card works).
266: */
267: if ((tmp2 = bus_space_read_1(sc->sc_iot, sc->mad_ioh, MC1_PORT)) == tmp) {
268: DPRINTF(("MC1_PORT didn't close after read (0x%02x)\n", tmp2));
269: return 0;
270: }
271:
272: mad_write(sc, MC1_PORT, tmp ^ 0x80); /* Toggle a bit */
273:
274: /* Compare the bit */
275: if ((tmp2 = mad_read(sc, MC1_PORT)) != (tmp ^ 0x80)) {
276: mad_write(sc, MC1_PORT, tmp); /* Restore */
277: DPRINTF(("Bit revert test failed (0x%02x, 0x%02x)\n", tmp, tmp2));
278: return 0;
279: }
280:
281: mad_write(sc, MC1_PORT, tmp); /* Restore */
282: return 1;
283: }
284:
285: static void
286: madprobe(sc, iobase)
287: struct wss_softc *sc;
288: int iobase;
289: {
290: static int valid_ports[M_WSS_NPORTS] =
291: { M_WSS_PORT0, M_WSS_PORT1, M_WSS_PORT2, M_WSS_PORT3 };
292: int i;
293:
294: /* Allocate bus space that the MAD chip wants */
295: if (bus_space_map(sc->sc_iot, MAD_BASE, MAD_NPORT, 0, &sc->mad_ioh))
296: goto bad0;
297: if (bus_space_map(sc->sc_iot, MAD_REG1, MAD_LEN1, 0, &sc->mad_ioh1))
298: goto bad1;
299: if (bus_space_map(sc->sc_iot, MAD_REG2, MAD_LEN2, 0, &sc->mad_ioh2))
300: goto bad2;
301: if (bus_space_map(sc->sc_iot, MAD_REG3, MAD_LEN3, 0, &sc->mad_ioh3))
302: goto bad3;
303:
304: DPRINTF(("mad: Detect using password = 0xE2\n"));
305: if (!detect_mad16(sc, MAD_82C928)) {
306: /* No luck. Try different model */
307: DPRINTF(("mad: Detect using password = 0xE3\n"));
308: if (!detect_mad16(sc, MAD_82C929))
309: goto bad;
310: sc->mad_chip_type = MAD_82C929;
311: DPRINTF(("mad: 82C929 detected\n"));
312: } else {
313: sc->mad_chip_type = MAD_82C928;
314: if ((mad_read(sc, MC3_PORT) & 0x03) == 0x03) {
315: DPRINTF(("mad: Mozart detected\n"));
316: sc->mad_chip_type = MAD_OTI601D;
317: } else {
318: DPRINTF(("mad: 82C928 detected?\n"));
319: sc->mad_chip_type = MAD_82C928;
320: }
321: }
322:
323: #ifdef AUDIO_DEBUG
324: if (wssdebug)
325: for (i = MC1_PORT; i <= MC7_PORT; i++)
326: printf("mad: port %03x = %02x\n", i, mad_read(sc, i));
327: #endif
328:
329: /* Set the WSS address. */
330: for (i = 0; i < M_WSS_NPORTS; i++)
331: if (valid_ports[i] == iobase)
332: break;
333: if (i >= M_WSS_NPORTS) { /* Not a valid port */
334: printf("mad: Bad WSS base address 0x%x\n", iobase);
335: goto bad;
336: }
337: sc->mad_ioindex = i;
338: /* enable WSS emulation at the I/O port, no joystick */
339: mad_write(sc, MC1_PORT, M_WSS_PORT_SELECT(i) | MC1_JOYDISABLE);
340: mad_write(sc, MC2_PORT, 0x03); /* ? */
341: mad_write(sc, MC3_PORT, 0xf0); /* Disable SB */
342: return;
343:
344: bad:
345: bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3);
346: bad3:
347: bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2);
348: bad2:
349: bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1);
350: bad1:
351: bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT);
352: bad0:
353: sc->mad_chip_type = MAD_NONE;
354: }
355:
356: static void
357: madunmap(sc)
358: struct wss_softc *sc;
359: {
360: if (sc->mad_chip_type == MAD_NONE)
361: return;
362: bus_space_unmap(sc->sc_iot, sc->mad_ioh, MAD_NPORT);
363: bus_space_unmap(sc->sc_iot, sc->mad_ioh1, MAD_LEN1);
364: bus_space_unmap(sc->sc_iot, sc->mad_ioh2, MAD_LEN2);
365: bus_space_unmap(sc->sc_iot, sc->mad_ioh3, MAD_LEN3);
366: }
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