1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
6 #include <linux/delay.h>
7 #include <linux/interrupt.h>
8 #include <linux/time.h>
9 #include <sound/core.h>
10 #include <sound/gus.h>
12 extern void snd_gf1_timers_init(struct snd_gus_card * gus);
13 extern void snd_gf1_timers_done(struct snd_gus_card * gus);
14 extern int snd_gf1_synth_init(struct snd_gus_card * gus);
15 extern void snd_gf1_synth_done(struct snd_gus_card * gus);
18 * ok.. default interrupt handlers...
21 static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
23 snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
26 static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
28 snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
31 static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
33 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
36 static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
38 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
41 static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
43 snd_gf1_i_ctrl_stop(gus, 0x00);
44 snd_gf1_i_ctrl_stop(gus, 0x0d);
47 static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
49 snd_gf1_i_write8(gus, 0x41, 0x00);
52 static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
54 snd_gf1_i_write8(gus, 0x49, 0x00);
57 void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
59 if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
60 gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
61 if (what & SNDRV_GF1_HANDLER_MIDI_IN)
62 gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
63 if (what & SNDRV_GF1_HANDLER_TIMER1)
64 gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
65 if (what & SNDRV_GF1_HANDLER_TIMER2)
66 gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
67 if (what & SNDRV_GF1_HANDLER_VOICE) {
68 struct snd_gus_voice *voice;
70 voice = &gus->gf1.voices[what & 0xffff];
72 voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
73 voice->handler_effect = NULL;
74 voice->volume_change = NULL;
76 if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
77 gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
78 if (what & SNDRV_GF1_HANDLER_DMA_READ)
79 gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
86 static void snd_gf1_clear_regs(struct snd_gus_card * gus)
90 spin_lock_irqsave(&gus->reg_lock, flags);
91 inb(GUSP(gus, IRQSTAT));
92 snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */
93 snd_gf1_write8(gus, 0x45, 0); /* Timer Control */
94 snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */
95 spin_unlock_irqrestore(&gus->reg_lock, flags);
98 static void snd_gf1_look_regs(struct snd_gus_card * gus)
102 spin_lock_irqsave(&gus->reg_lock, flags);
103 snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */
104 snd_gf1_look8(gus, 0x49); /* Sampling Control Register */
105 inb(GUSP(gus, IRQSTAT));
106 snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */
107 spin_unlock_irqrestore(&gus->reg_lock, flags);
111 * put selected GF1 voices to initial stage...
114 void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
118 spin_lock_irqsave(&gus->reg_lock, flags);
119 snd_gf1_select_voice(gus, voice);
121 printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
123 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
124 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
125 spin_unlock_irqrestore(&gus->reg_lock, flags);
128 void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
132 spin_lock_irqsave(&gus->reg_lock, flags);
133 snd_gf1_select_voice(gus, voice);
135 printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
137 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
138 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
139 if (gus->gf1.enh_mode)
140 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
141 spin_unlock_irqrestore(&gus->reg_lock, flags);
143 snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
144 snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
148 static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
149 unsigned short v_max)
153 unsigned short i, w_16;
155 daddr = gus->gf1.default_voice_address << 4;
156 for (i = v_min; i <= v_max; i++) {
158 if (gus->gf1.syn_voices)
159 gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
161 spin_lock_irqsave(&gus->reg_lock, flags);
162 snd_gf1_select_voice(gus, i);
163 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */
164 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */
165 if (gus->gf1.enh_mode)
166 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */
167 w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
168 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
169 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
170 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
171 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
172 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
173 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
174 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
175 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
176 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
177 if (gus->gf1.enh_mode) {
178 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
179 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
180 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
182 spin_unlock_irqrestore(&gus->reg_lock, flags);
184 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
185 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
190 void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
194 unsigned short ramp_end;
196 if (!in_interrupt()) { /* this can't be done in interrupt */
197 for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
198 spin_lock_irqsave(&gus->reg_lock, flags);
199 snd_gf1_select_voice(gus, i);
200 ramp_end = snd_gf1_read16(gus, 9) >> 8;
201 if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
203 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */
204 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */
205 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
206 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
207 if (gus->gf1.enh_mode) {
209 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
212 spin_unlock_irqrestore(&gus->reg_lock, flags);
214 msleep_interruptible(50);
216 snd_gf1_clear_voices(gus, v_min, v_max);
219 static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus,
220 struct snd_gus_voice * pvoice,
221 int type, int client, int port)
225 case SNDRV_GF1_VOICE_TYPE_PCM:
226 gus->gf1.pcm_alloc_voices++;
229 case SNDRV_GF1_VOICE_TYPE_SYNTH:
231 pvoice->client = client;
234 case SNDRV_GF1_VOICE_TYPE_MIDI:
236 pvoice->client = client;
242 struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
244 struct snd_gus_voice *pvoice;
248 spin_lock_irqsave(&gus->voice_alloc, flags);
249 if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
250 if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
251 spin_unlock_irqrestore(&gus->voice_alloc, flags);
255 for (idx = 0; idx < 32; idx++) {
256 pvoice = &gus->gf1.voices[idx];
258 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
259 spin_unlock_irqrestore(&gus->voice_alloc, flags);
263 for (idx = 0; idx < 32; idx++) {
264 pvoice = &gus->gf1.voices[idx];
265 if (pvoice->midi && !pvoice->client) {
266 snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
267 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
268 spin_unlock_irqrestore(&gus->voice_alloc, flags);
272 spin_unlock_irqrestore(&gus->voice_alloc, flags);
276 void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
279 void (*private_free)(struct snd_gus_voice *voice);
281 if (voice == NULL || !voice->use)
283 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
284 snd_gf1_clear_voices(gus, voice->number, voice->number);
285 spin_lock_irqsave(&gus->voice_alloc, flags);
286 private_free = voice->private_free;
287 voice->private_free = NULL;
288 voice->private_data = NULL;
290 gus->gf1.pcm_alloc_voices--;
291 voice->use = voice->pcm = 0;
292 voice->sample_ops = NULL;
293 spin_unlock_irqrestore(&gus->voice_alloc, flags);
299 * call this function only by start of driver
302 int snd_gf1_start(struct snd_gus_card * gus)
307 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
309 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
311 snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
313 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
314 for (i = 0; i < 32; i++) {
315 gus->gf1.voices[i].number = i;
316 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
319 snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
321 if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
322 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
323 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
325 snd_gf1_clear_regs(gus);
326 snd_gf1_select_active_voices(gus);
328 gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
329 /* initialize LFOs & clear LFOs memory */
330 if (gus->gf1.enh_mode && gus->gf1.memory) {
332 gus->gf1.default_voice_address += 1024;
337 snd_gf1_lfo_init(gus);
339 if (gus->gf1.memory > 0)
340 for (i = 0; i < 4; i++)
341 snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
342 snd_gf1_clear_regs(gus);
343 snd_gf1_clear_voices(gus, 0, 31);
344 snd_gf1_look_regs(gus);
346 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
348 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
349 if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
350 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
351 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
353 while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
355 spin_lock_irqsave(&gus->reg_lock, flags);
356 outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
357 outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
358 spin_unlock_irqrestore(&gus->reg_lock, flags);
360 snd_gf1_timers_init(gus);
361 snd_gf1_look_regs(gus);
362 snd_gf1_mem_init(gus);
363 snd_gf1_mem_proc_init(gus);
364 #ifdef CONFIG_SND_DEBUG
365 snd_gus_irq_profile_init(gus);
370 if (gus->chip.playback_fifo_size > 0)
371 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
372 if (gus->chip.record_fifo_size > 0)
373 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
374 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
382 * call this function only by shutdown of driver
385 int snd_gf1_stop(struct snd_gus_card * gus)
387 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
388 snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */
389 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
390 snd_gf1_timers_done(gus);
391 snd_gf1_mem_done(gus);
393 snd_gf1_lfo_done(gus);