1 /*
2 * Copyright (c) by Jaroslav Kysela <perex@suse.cz>
3 *
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
21 #include <sound/driver.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
24 #include <linux/time.h>
25 #include <sound/core.h>
26 #include <sound/gus.h>
27
28 extern void snd_gf1_timers_init(snd_gus_card_t * gus);
29 extern void snd_gf1_timers_done(snd_gus_card_t * gus);
30 extern int snd_gf1_synth_init(snd_gus_card_t * gus);
31 extern void snd_gf1_synth_done(snd_gus_card_t * gus);
32
33 /*
34 * ok.. default interrupt handlers...
35 */
36
37 static void snd_gf1_default_interrupt_handler_midi_out(snd_gus_card_t * gus)
38 {
39 snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
40 }
41
42 static void snd_gf1_default_interrupt_handler_midi_in(snd_gus_card_t * gus)
43 {
44 snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
45 }
46
47 static void snd_gf1_default_interrupt_handler_timer1(snd_gus_card_t * gus)
48 {
49 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
50 }
51
52 static void snd_gf1_default_interrupt_handler_timer2(snd_gus_card_t * gus)
53 {
54 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
55 }
56
57 static void snd_gf1_default_interrupt_handler_wave_and_volume(snd_gus_card_t * gus, snd_gus_voice_t * voice)
58 {
59 snd_gf1_i_ctrl_stop(gus, 0x00);
60 snd_gf1_i_ctrl_stop(gus, 0x0d);
61 }
62
63 static void snd_gf1_default_interrupt_handler_dma_write(snd_gus_card_t * gus)
64 {
65 snd_gf1_i_write8(gus, 0x41, 0x00);
66 }
67
68 static void snd_gf1_default_interrupt_handler_dma_read(snd_gus_card_t * gus)
69 {
70 snd_gf1_i_write8(gus, 0x49, 0x00);
71 }
72
73 void snd_gf1_set_default_handlers(snd_gus_card_t * gus, unsigned int what)
74 {
75 if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
76 gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
77 if (what & SNDRV_GF1_HANDLER_MIDI_IN)
78 gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
79 if (what & SNDRV_GF1_HANDLER_TIMER1)
80 gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
81 if (what & SNDRV_GF1_HANDLER_TIMER2)
82 gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
83 if (what & SNDRV_GF1_HANDLER_VOICE) {
84 snd_gus_voice_t *voice;
85
86 voice = &gus->gf1.voices[what & 0xffff];
87 voice->handler_wave =
88 voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
89 voice->handler_effect = NULL;
90 voice->volume_change = NULL;
91 }
92 if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
93 gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
94 if (what & SNDRV_GF1_HANDLER_DMA_READ)
95 gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
96 }
97
98 /*
99
100 */
101
102 static void snd_gf1_clear_regs(snd_gus_card_t * gus)
103 {
104 unsigned long flags;
105
106 spin_lock_irqsave(&gus->reg_lock, flags);
107 inb(GUSP(gus, IRQSTAT));
108 snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */
109 snd_gf1_write8(gus, 0x45, 0); /* Timer Control */
110 snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */
111 spin_unlock_irqrestore(&gus->reg_lock, flags);
112 }
113
114 static void snd_gf1_look_regs(snd_gus_card_t * gus)
115 {
116 unsigned long flags;
117
118 spin_lock_irqsave(&gus->reg_lock, flags);
119 snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */
120 snd_gf1_look8(gus, 0x49); /* Sampling Control Register */
121 inb(GUSP(gus, IRQSTAT));
122 snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */
123 spin_unlock_irqrestore(&gus->reg_lock, flags);
124 }
125
126 /*
127 * put selected GF1 voices to initial stage...
128 */
129
130 void snd_gf1_smart_stop_voice(snd_gus_card_t * gus, unsigned short voice)
131 {
132 unsigned long flags;
133
134 spin_lock_irqsave(&gus->reg_lock, flags);
135 snd_gf1_select_voice(gus, voice);
136 #if 0
137 printk(" -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
138 #endif
139 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
140 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
141 spin_unlock_irqrestore(&gus->reg_lock, flags);
142 }
143
144 void snd_gf1_stop_voice(snd_gus_card_t * gus, unsigned short voice)
145 {
146 unsigned long flags;
147
148 spin_lock_irqsave(&gus->reg_lock, flags);
149 snd_gf1_select_voice(gus, voice);
150 #if 0
151 printk(" -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
152 #endif
153 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
154 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
155 if (gus->gf1.enh_mode)
156 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
157 spin_unlock_irqrestore(&gus->reg_lock, flags);
158 #if 0
159 snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
160 snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
161 #endif
162 }
163
164 void snd_gf1_clear_voices(snd_gus_card_t * gus, unsigned short v_min, unsigned short v_max)
165 {
166 unsigned long flags;
167 unsigned int daddr;
168 unsigned short i, w_16;
169
170 daddr = gus->gf1.default_voice_address << 4;
171 for (i = v_min; i <= v_max; i++) {
172 #if 0
173 if (gus->gf1.syn_voices)
174 gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
175 #endif
176 spin_lock_irqsave(&gus->reg_lock, flags);
177 snd_gf1_select_voice(gus, i);
178 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */
179 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */
180 if (gus->gf1.enh_mode)
181 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */
182 w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
183 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
184 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
185 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
186 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
187 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
188 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
189 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
190 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
191 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
192 if (gus->gf1.enh_mode) {
193 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
194 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
195 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
196 }
197 spin_unlock_irqrestore(&gus->reg_lock, flags);
198 #if 0
199 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
200 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
201 #endif
202 }
203 }
204
205 void snd_gf1_stop_voices(snd_gus_card_t * gus, unsigned short v_min, unsigned short v_max)
206 {
207 unsigned long flags;
208 short i, ramp_ok;
209 unsigned short ramp_end;
210 long time;
211
212 if (!in_interrupt()) { /* this can't be done in interrupt */
213 for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
214 spin_lock_irqsave(&gus->reg_lock, flags);
215 snd_gf1_select_voice(gus, i);
216 ramp_end = snd_gf1_read16(gus, 9) >> 8;
217 if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
218 ramp_ok++;
219 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */
220 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */
221 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
222 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
223 if (gus->gf1.enh_mode) {
224 snd_gf1_delay(gus);
225 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
226 }
227 }
228 spin_unlock_irqrestore(&gus->reg_lock, flags);
229 }
230 time = HZ / 20;
231 while (time > 0 && !signal_pending(current)) {
232 set_current_state(TASK_INTERRUPTIBLE);
233 time = schedule_timeout(time);
234 }
235 }
236 snd_gf1_clear_voices(gus, v_min, v_max);
237 }
238
239 static void snd_gf1_alloc_voice_use(snd_gus_card_t * gus,
240 snd_gus_voice_t * pvoice,
241 int type, int client, int port)
242 {
243 pvoice->use = 1;
244 switch (type) {
245 case SNDRV_GF1_VOICE_TYPE_PCM:
246 gus->gf1.pcm_alloc_voices++;
247 pvoice->pcm = 1;
248 break;
249 case SNDRV_GF1_VOICE_TYPE_SYNTH:
250 pvoice->synth = 1;
251 pvoice->client = client;
252 pvoice->port = port;
253 break;
254 case SNDRV_GF1_VOICE_TYPE_MIDI:
255 pvoice->midi = 1;
256 pvoice->client = client;
257 pvoice->port = port;
258 break;
259 }
260 }
261
262 snd_gus_voice_t *snd_gf1_alloc_voice(snd_gus_card_t * gus, int type, int client, int port)
263 {
264 snd_gus_voice_t *pvoice;
265 unsigned long flags;
266 int idx;
267
268 spin_lock_irqsave(&gus->voice_alloc, flags);
269 if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
270 if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
271 spin_unlock_irqrestore(&gus->voice_alloc, flags);
272 return NULL;
273 }
274 }
275 for (idx = 0; idx < 32; idx++) {
276 pvoice = &gus->gf1.voices[idx];
277 if (!pvoice->use) {
278 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
279 spin_unlock_irqrestore(&gus->voice_alloc, flags);
280 return pvoice;
281 }
282 }
283 for (idx = 0; idx < 32; idx++) {
284 pvoice = &gus->gf1.voices[idx];
285 if (pvoice->midi && !pvoice->client) {
286 snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
287 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
288 spin_unlock_irqrestore(&gus->voice_alloc, flags);
289 return pvoice;
290 }
291 }
292 spin_unlock_irqrestore(&gus->voice_alloc, flags);
293 return NULL;
294 }
295
296 void snd_gf1_free_voice(snd_gus_card_t * gus, snd_gus_voice_t *voice)
297 {
298 unsigned long flags;
299 void (*private_free)(snd_gus_voice_t *voice);
300 void *private_data;
301
302 if (voice == NULL || !voice->use)
303 return;
304 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
305 snd_gf1_clear_voices(gus, voice->number, voice->number);
306 spin_lock_irqsave(&gus->voice_alloc, flags);
307 private_free = voice->private_free;
308 private_data = voice->private_data;
309 voice->private_free = NULL;
310 voice->private_data = NULL;
311 if (voice->pcm)
312 gus->gf1.pcm_alloc_voices--;
313 voice->use = voice->pcm = 0;
314 voice->sample_ops = NULL;
315 spin_unlock_irqrestore(&gus->voice_alloc, flags);
316 if (private_free)
317 private_free(voice);
318 }
319
320 /*
321 * call this function only by start of driver
322 */
323
324 int snd_gf1_start(snd_gus_card_t * gus)
325 {
326 unsigned long flags;
327 unsigned int i;
328
329 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
330 udelay(160);
331 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
332 udelay(160);
333 snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
334
335 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
336 for (i = 0; i < 32; i++) {
337 gus->gf1.voices[i].number = i;
338 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
339 }
340
341 snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
342
343 if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
344 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
345 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
346 }
347 snd_gf1_clear_regs(gus);
348 snd_gf1_select_active_voices(gus);
349 snd_gf1_delay(gus);
350 gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
351 /* initialize LFOs & clear LFOs memory */
352 if (gus->gf1.enh_mode && gus->gf1.memory) {
353 gus->gf1.hw_lfo = 1;
354 gus->gf1.default_voice_address += 1024;
355 } else {
356 gus->gf1.sw_lfo = 1;
357 }
358 #if 0
359 snd_gf1_lfo_init(gus);
360 #endif
361 if (gus->gf1.memory > 0)
362 for (i = 0; i < 4; i++)
363 snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
364 snd_gf1_clear_regs(gus);
365 snd_gf1_clear_voices(gus, 0, 31);
366 snd_gf1_look_regs(gus);
367 udelay(160);
368 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
369 udelay(160);
370 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
371 if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
372 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
373 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
374 }
375 while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
376
377 spin_lock_irqsave(&gus->reg_lock, flags);
378 outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
379 outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
380 spin_unlock_irqrestore(&gus->reg_lock, flags);
381
382 snd_gf1_timers_init(gus);
383 snd_gf1_look_regs(gus);
384 snd_gf1_mem_init(gus);
385 snd_gf1_mem_proc_init(gus);
386 #ifdef CONFIG_SND_DEBUG
387 snd_gus_irq_profile_init(gus);
388 #endif
389
390 #if 0
391 if (gus->pnp_flag) {
392 if (gus->chip.playback_fifo_size > 0)
393 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
394 if (gus->chip.record_fifo_size > 0)
395 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
396 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
397 }
398 #endif
399
400 return 0;
401 }
402
403 /*
404 * call this function only by shutdown of driver
405 */
406
407 int snd_gf1_stop(snd_gus_card_t * gus)
408 {
409 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
410 snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */
411 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
412 snd_gf1_timers_done(gus);
413 snd_gf1_mem_done(gus);
414 #if 0
415 snd_gf1_lfo_done(gus);
416 #endif
417 return 0;
418 }
419
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