Annotation of sys/dev/isa/pas.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: pas.c,v 1.24 2003/04/27 11:22:53 ho Exp $ */
2: /* $NetBSD: pas.c,v 1.37 1998/01/12 09:43:43 thorpej Exp $ */
3:
4: /*
5: * Copyright (c) 1991-1993 Regents of the University of California.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. All advertising materials mentioning features or use of this software
17: * must display the following acknowledgement:
18: * This product includes software developed by the Computer Systems
19: * Engineering Group at Lawrence Berkeley Laboratory.
20: * 4. Neither the name of the University nor of the Laboratory may be used
21: * to endorse or promote products derived from this software without
22: * specific prior written permission.
23: *
24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: *
36: */
37: /*
38: * jfw 7/13/97 - The soundblaster code requires the generic bus-space
39: * structures to be set up properly. Rather than go to the effort of making
40: * code for a dead line fully generic, properly set up the SB structures and
41: * leave the rest x86/ISA/default-configuration specific. If you have a
42: * REAL computer, go buy a REAL sound card.
43: */
44: /*
45: * Todo:
46: * - look at other PAS drivers (for PAS native support)
47: * - use common sb.c once emulation is setup
48: */
49:
50: #include <sys/param.h>
51: #include <sys/systm.h>
52: #include <sys/errno.h>
53: #include <sys/ioctl.h>
54: #include <sys/syslog.h>
55: #include <sys/device.h>
56: #include <sys/proc.h>
57:
58: #include <machine/cpu.h>
59: #include <machine/intr.h>
60: #include <machine/bus.h>
61:
62: #include <sys/audioio.h>
63: #include <dev/audio_if.h>
64: #include <dev/midi_if.h>
65:
66: #include <dev/isa/isavar.h>
67: #include <dev/isa/isadmavar.h>
68:
69: #include <dev/isa/sbdspvar.h>
70: #include <dev/isa/sbreg.h>
71:
72: #define DEFINE_TRANSLATIONS
73: #include <dev/isa/pasreg.h>
74:
75: #ifdef AUDIO_DEBUG
76: #define DPRINTF(x) if (pasdebug) printf x
77: int pasdebug = 0;
78: #else
79: #define DPRINTF(x)
80: #endif
81:
82: /*
83: * Software state, per SoundBlaster card.
84: * The soundblaster has multiple functionality, which we must demultiplex.
85: * One approach is to have one major device number for the soundblaster card,
86: * and use different minor numbers to indicate which hardware function
87: * we want. This would make for one large driver. Instead our approach
88: * is to partition the design into a set of drivers that share an underlying
89: * piece of hardware. Most things are hard to share, for example, the audio
90: * and midi ports. For audio, we might want to mix two processes' signals,
91: * and for midi we might want to merge streams (this is hard due to
92: * running status). Moreover, we should be able to re-use the high-level
93: * modules with other kinds of hardware. In this module, we only handle the
94: * most basic communications with the sb card.
95: */
96: struct pas_softc {
97: struct sbdsp_softc sc_sbdsp; /* use sc_dev, sc_id, sc_ih,
98: * sc_iobase, sc_irq, sc_drq
99: * from here */
100: int model; /* unique to PAS */
101: int rev;
102:
103: };
104:
105: int pas_getdev(void *, struct audio_device *);
106: void pasconf(int, int, int, int);
107:
108:
109: /*
110: * Define our interface to the higher level audio driver.
111: */
112:
113: struct audio_hw_if pas_hw_if = {
114: sbdsp_open,
115: sbdsp_close,
116: 0,
117: sbdsp_query_encoding,
118: sbdsp_set_params,
119: sbdsp_round_blocksize,
120: 0,
121: 0,
122: 0,
123: 0,
124: 0,
125: sbdsp_haltdma,
126: sbdsp_haltdma,
127: sbdsp_speaker_ctl,
128: pas_getdev,
129: 0,
130: sbdsp_mixer_set_port,
131: sbdsp_mixer_get_port,
132: sbdsp_mixer_query_devinfo,
133: sb_malloc,
134: sb_free,
135: sb_round,
136: sb_mappage,
137: sbdsp_get_props,
138: sbdsp_trigger_output,
139: sbdsp_trigger_input
140: };
141:
142: /* The Address Translation code is used to convert I/O register addresses to
143: be relative to the given base -register */
144:
145: static char *pasnames[] = {
146: "",
147: "Plus",
148: "CDPC",
149: "16",
150: "16Basic"
151: };
152:
153: static struct audio_device pas_device = {
154: "PAS,??",
155: "",
156: "pas"
157: };
158:
159: /*XXX assume default I/O base address */
160: #define pasread(p) inb(p)
161: #define paswrite(d, p) outb(p, d)
162:
163: void
164: pasconf(model, sbbase, sbirq, sbdrq)
165: int model;
166: int sbbase;
167: int sbirq;
168: int sbdrq;
169: {
170: paswrite(0x00, INTERRUPT_MASK);
171: /* Local timer control register */
172: paswrite(0x36, SAMPLE_COUNTER_CONTROL);
173: /* Sample rate timer (16 bit) */
174: paswrite(0x36, SAMPLE_RATE_TIMER);
175: paswrite(0, SAMPLE_RATE_TIMER);
176: /* Local timer control register */
177: paswrite(0x74, SAMPLE_COUNTER_CONTROL);
178: /* Sample count register (16 bit) */
179: paswrite(0x74, SAMPLE_BUFFER_COUNTER);
180: paswrite(0, SAMPLE_BUFFER_COUNTER);
181:
182: paswrite(P_C_PCM_MONO | P_C_PCM_DAC_MODE |
183: P_C_MIXER_CROSS_L_TO_L | P_C_MIXER_CROSS_R_TO_R,
184: PCM_CONTROL);
185: paswrite(S_M_PCM_RESET | S_M_FM_RESET |
186: S_M_SB_RESET | S_M_MIXER_RESET, SERIAL_MIXER);
187:
188: /*XXX*/
189: paswrite(I_C_1_BOOT_RESET_ENABLE|1, IO_CONFIGURATION_1);
190:
191: paswrite(I_C_2_PCM_DMA_DISABLED, IO_CONFIGURATION_2);
192: paswrite(I_C_3_PCM_IRQ_DISABLED, IO_CONFIGURATION_3);
193:
194: #ifdef BROKEN_BUS_CLOCK
195: paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND |
196: S_C_1_FM_EMULATE_CLOCK, SYSTEM_CONFIGURATION_1);
197: #else
198: paswrite(S_C_1_PCS_ENABLE | S_C_1_PCS_STEREO | S_C_1_PCS_REALSOUND,
199: SYSTEM_CONFIGURATION_1);
200: #endif
201:
202: /*XXX*/
203: paswrite(0, SYSTEM_CONFIGURATION_2);
204: paswrite(0, SYSTEM_CONFIGURATION_3);
205:
206: /* Sets mute off and selects filter rate of 17.897 kHz */
207: paswrite(F_F_MIXER_UNMUTE | 0x01, FILTER_FREQUENCY);
208:
209: if (model == PAS_16 || model == PAS_16BASIC)
210: paswrite(8, PRESCALE_DIVIDER);
211: else
212: paswrite(0, PRESCALE_DIVIDER);
213:
214: paswrite(P_M_MV508_ADDRESS | P_M_MV508_PCM, PARALLEL_MIXER);
215: paswrite(5, PARALLEL_MIXER);
216:
217: /*
218: * Setup SoundBlaster emulation.
219: */
220: paswrite((sbbase >> 4) & 0xf, EMULATION_ADDRESS);
221: paswrite(E_C_SB_IRQ_translate[sbirq] | E_C_SB_DMA_translate[sbdrq],
222: EMULATION_CONFIGURATION);
223: paswrite(C_E_SB_ENABLE, COMPATIBILITY_ENABLE);
224:
225: /*
226: * Set mid-range levels.
227: */
228: paswrite(P_M_MV508_ADDRESS | P_M_MV508_MODE, PARALLEL_MIXER);
229: paswrite(P_M_MV508_LOUDNESS | P_M_MV508_ENHANCE_NONE, PARALLEL_MIXER);
230:
231: paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_A, PARALLEL_MIXER);
232: paswrite(50, PARALLEL_MIXER);
233: paswrite(P_M_MV508_ADDRESS | P_M_MV508_MASTER_B, PARALLEL_MIXER);
234: paswrite(50, PARALLEL_MIXER);
235:
236: paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_SB, PARALLEL_MIXER);
237: paswrite(P_M_MV508_OUTPUTMIX | 30, PARALLEL_MIXER);
238:
239: paswrite(P_M_MV508_ADDRESS | P_M_MV508_MIXER | P_M_MV508_MIC, PARALLEL_MIXER);
240: paswrite(P_M_MV508_INPUTMIX | 30, PARALLEL_MIXER);
241: }
242:
243: int pasprobe(struct device *, void *, void *);
244: void pasattach(struct device *, struct device *, void *);
245:
246: struct cfattach pas_ca = {
247: sizeof(struct pas_softc), pasprobe, pasattach
248: };
249:
250: struct cfdriver pas_cd = {
251: NULL, "pas", DV_DULL
252: };
253:
254: /*
255: * Probe / attach routines.
256: */
257:
258: /*
259: * Probe for the soundblaster hardware.
260: */
261: int
262: pasprobe(parent, match, aux)
263: struct device *parent;
264: void *match, *aux;
265: {
266: struct pas_softc *sc = match;
267: struct isa_attach_args *ia = aux;
268: int iobase;
269: u_char id, t;
270:
271: /* ensure we can set this up as a sound blaster */
272: if (!SB_BASE_VALID(ia->ia_iobase)) {
273: DPRINTF(("pas: configured SB iobase 0x%x invalid\n", ia->ia_iobase));
274: return 0;
275: }
276:
277: /*
278: * WARNING: Setting an option like W:1 or so that disables
279: * warm boot reset of the card will screw up this detect code
280: * something fierce. Adding code to handle this means possibly
281: * interfering with other cards on the bus if you have something
282: * on base port 0x388. SO be forewarned.
283: */
284: /* Talk to first board */
285: outb(MASTER_DECODE, 0xbc);
286: /* Set base address */
287:
288: #if 0
289: /* XXX Need to setup pseudo device */
290: /* XXX What are good io addrs ? */
291: if (iobase != PAS_DEFAULT_BASE) {
292: DPRINTF(("pas: configured iobase %d invalid\n", iobase));
293: return 0;
294: }
295: #else
296: /* Start out talking to native PAS */
297: iobase = PAS_DEFAULT_BASE;
298: #endif
299:
300: outb(MASTER_DECODE, iobase >> 2);
301: /* One wait-state */
302: paswrite(1, WAIT_STATE);
303:
304: id = pasread(INTERRUPT_MASK);
305: if (id == 0xff || id == 0xfe) {
306: /* sanity */
307: DPRINTF(("pas: bogus card id\n"));
308: return 0;
309: }
310: /*
311: * We probably have a PAS-series board, now check for a
312: * PAS2-series board by trying to change the board revision
313: * bits. PAS2-series hardware won't let you do this because
314: * the bits are read-only.
315: */
316: t = id ^ 0xe0;
317: paswrite(t, INTERRUPT_MASK);
318: t = inb(INTERRUPT_MASK);
319: paswrite(id, INTERRUPT_MASK);
320:
321: if (t != id) {
322: /* Not a PAS2 */
323: DPRINTF(("pas: detected card but PAS2 test failed\n"));
324: return 0;
325: }
326: /*XXX*/
327: t = pasread(OPERATION_MODE_1) & 0xf;
328: sc->model = O_M_1_to_card[t];
329: if (sc->model != 0) {
330: sc->rev = pasread(BOARD_REV_ID);
331: }
332: else {
333: DPRINTF(("pas: bogus model id\n"));
334: return 0;
335: }
336:
337: if (sc->model >= 0) {
338: if (ia->ia_irq == IRQUNK) {
339: DPRINTF(("pas: sb emulation requires known irq\n"));
340: return (0);
341: }
342: pasconf(sc->model, ia->ia_iobase, ia->ia_irq, 1);
343: } else {
344: DPRINTF(("pas: could not probe pas\n"));
345: return (0);
346: }
347:
348: /* Now a SoundBlaster, so set up proper bus-space hooks
349: * appropriately
350: */
351:
352: sc->sc_sbdsp.sc_iobase = ia->ia_iobase;
353: sc->sc_sbdsp.sc_iot = ia->ia_iot;
354:
355: /* Map i/o space [we map 24 ports which is the max of the sb and pro */
356: if (bus_space_map(sc->sc_sbdsp.sc_iot, ia->ia_iobase, SBP_NPORT, 0,
357: &sc->sc_sbdsp.sc_ioh)) {
358: DPRINTF(("pas: can't map i/o space 0x%x/%d in probe\n",
359: ia->ia_iobase, SBP_NPORT));
360: return 0;
361: }
362:
363: if (sbdsp_reset(&sc->sc_sbdsp) < 0) {
364: DPRINTF(("pas: couldn't reset card\n"));
365: goto unmap;
366: }
367:
368: /*
369: * Cannot auto-discover DMA channel.
370: */
371: if (!SB_DRQ_VALID(ia->ia_drq)) {
372: DPRINTF(("pas: configured dma chan %d invalid\n", ia->ia_drq));
373: goto unmap;
374: }
375: if (!SB_IRQ_VALID(ia->ia_irq)) {
376: DPRINTF(("pas: configured irq chan %d invalid\n", ia->ia_irq));
377: goto unmap;
378: }
379:
380: sc->sc_sbdsp.sc_irq = ia->ia_irq;
381: sc->sc_sbdsp.sc_drq8 = ia->ia_drq;
382: sc->sc_sbdsp.sc_drq16 = -1; /* XXX */
383: sc->sc_sbdsp.sc_ic = ia->ia_ic;
384:
385: if (sbdsp_probe(&sc->sc_sbdsp) == 0) {
386: DPRINTF(("pas: sbdsp probe failed\n"));
387: goto unmap;
388: }
389:
390: ia->ia_iosize = SB_NPORT;
391: return 1;
392:
393: unmap:
394: bus_space_unmap(sc->sc_sbdsp.sc_iot, sc->sc_sbdsp.sc_ioh, SBP_NPORT);
395: return 0;
396: }
397:
398: /*
399: * Attach hardware to driver, attach hardware driver to audio
400: * pseudo-device driver .
401: */
402: void
403: pasattach(parent, self, aux)
404: struct device *parent, *self;
405: void *aux;
406: {
407: struct pas_softc *sc = (struct pas_softc *)self;
408: struct isa_attach_args *ia = (struct isa_attach_args *)aux;
409: int iobase = ia->ia_iobase;
410:
411: sc->sc_sbdsp.sc_isa = parent;
412: sc->sc_sbdsp.sc_iobase = iobase;
413: sc->sc_sbdsp.sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE,
414: IPL_AUDIO, sbdsp_intr, &sc->sc_sbdsp, sc->sc_sbdsp.sc_dev.dv_xname);
415:
416: printf(" ProAudio Spectrum %s [rev %d] ", pasnames[sc->model], sc->rev);
417:
418: sbdsp_attach(&sc->sc_sbdsp);
419:
420: snprintf(pas_device.name, sizeof pas_device.name, "pas,%s",
421: pasnames[sc->model]);
422: snprintf(pas_device.version, sizeof pas_device.version, "%d",
423: sc->rev);
424:
425: audio_attach_mi(&pas_hw_if, &sc->sc_sbdsp, &sc->sc_sbdsp.sc_dev);
426: }
427:
428: int
429: pas_getdev(addr, retp)
430: void *addr;
431: struct audio_device *retp;
432: {
433: *retp = pas_device;
434: return 0;
435: }
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