1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 */
5
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>
11
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);
16
17 /*
18 * ok.. default interrupt handlers...
19 */
20
snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)21 static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
22 {
23 snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
24 }
25
snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)26 static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
27 {
28 snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
29 }
30
snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)31 static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
32 {
33 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
34 }
35
snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)36 static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
37 {
38 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
39 }
40
snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus,struct snd_gus_voice * voice)41 static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
42 {
43 snd_gf1_i_ctrl_stop(gus, 0x00);
44 snd_gf1_i_ctrl_stop(gus, 0x0d);
45 }
46
snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)47 static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
48 {
49 snd_gf1_i_write8(gus, 0x41, 0x00);
50 }
51
snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)52 static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
53 {
54 snd_gf1_i_write8(gus, 0x49, 0x00);
55 }
56
snd_gf1_set_default_handlers(struct snd_gus_card * gus,unsigned int what)57 void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
58 {
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;
69
70 voice = &gus->gf1.voices[what & 0xffff];
71 voice->handler_wave =
72 voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
73 voice->handler_effect = NULL;
74 voice->volume_change = NULL;
75 }
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;
80 }
81
82 /*
83
84 */
85
snd_gf1_clear_regs(struct snd_gus_card * gus)86 static void snd_gf1_clear_regs(struct snd_gus_card * gus)
87 {
88 unsigned long flags;
89
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);
96 }
97
snd_gf1_look_regs(struct snd_gus_card * gus)98 static void snd_gf1_look_regs(struct snd_gus_card * gus)
99 {
100 unsigned long flags;
101
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);
108 }
109
110 /*
111 * put selected GF1 voices to initial stage...
112 */
113
snd_gf1_smart_stop_voice(struct snd_gus_card * gus,unsigned short voice)114 void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
115 {
116 unsigned long flags;
117
118 spin_lock_irqsave(&gus->reg_lock, flags);
119 snd_gf1_select_voice(gus, voice);
120 #if 0
121 printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
122 #endif
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);
126 }
127
snd_gf1_stop_voice(struct snd_gus_card * gus,unsigned short voice)128 void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
129 {
130 unsigned long flags;
131
132 spin_lock_irqsave(&gus->reg_lock, flags);
133 snd_gf1_select_voice(gus, voice);
134 #if 0
135 printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
136 #endif
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);
142 #if 0
143 snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
144 snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
145 #endif
146 }
147
snd_gf1_clear_voices(struct snd_gus_card * gus,unsigned short v_min,unsigned short v_max)148 static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
149 unsigned short v_max)
150 {
151 unsigned long flags;
152 unsigned int daddr;
153 unsigned short i, w_16;
154
155 daddr = gus->gf1.default_voice_address << 4;
156 for (i = v_min; i <= v_max; i++) {
157 #if 0
158 if (gus->gf1.syn_voices)
159 gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
160 #endif
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);
181 }
182 spin_unlock_irqrestore(&gus->reg_lock, flags);
183 #if 0
184 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
185 snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
186 #endif
187 }
188 }
189
snd_gf1_stop_voices(struct snd_gus_card * gus,unsigned short v_min,unsigned short v_max)190 void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
191 {
192 unsigned long flags;
193 short i, ramp_ok;
194 unsigned short ramp_end;
195
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) {
202 ramp_ok++;
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) {
208 snd_gf1_delay(gus);
209 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
210 }
211 }
212 spin_unlock_irqrestore(&gus->reg_lock, flags);
213 }
214 msleep_interruptible(50);
215 }
216 snd_gf1_clear_voices(gus, v_min, v_max);
217 }
218
snd_gf1_alloc_voice_use(struct snd_gus_card * gus,struct snd_gus_voice * pvoice,int type,int client,int port)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)
222 {
223 pvoice->use = 1;
224 switch (type) {
225 case SNDRV_GF1_VOICE_TYPE_PCM:
226 gus->gf1.pcm_alloc_voices++;
227 pvoice->pcm = 1;
228 break;
229 case SNDRV_GF1_VOICE_TYPE_SYNTH:
230 pvoice->synth = 1;
231 pvoice->client = client;
232 pvoice->port = port;
233 break;
234 case SNDRV_GF1_VOICE_TYPE_MIDI:
235 pvoice->midi = 1;
236 pvoice->client = client;
237 pvoice->port = port;
238 break;
239 }
240 }
241
snd_gf1_alloc_voice(struct snd_gus_card * gus,int type,int client,int port)242 struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
243 {
244 struct snd_gus_voice *pvoice;
245 unsigned long flags;
246 int idx;
247
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);
252 return NULL;
253 }
254 }
255 for (idx = 0; idx < 32; idx++) {
256 pvoice = &gus->gf1.voices[idx];
257 if (!pvoice->use) {
258 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
259 spin_unlock_irqrestore(&gus->voice_alloc, flags);
260 return pvoice;
261 }
262 }
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);
269 return pvoice;
270 }
271 }
272 spin_unlock_irqrestore(&gus->voice_alloc, flags);
273 return NULL;
274 }
275
snd_gf1_free_voice(struct snd_gus_card * gus,struct snd_gus_voice * voice)276 void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
277 {
278 unsigned long flags;
279 void (*private_free)(struct snd_gus_voice *voice);
280
281 if (voice == NULL || !voice->use)
282 return;
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;
289 if (voice->pcm)
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);
294 if (private_free)
295 private_free(voice);
296 }
297
298 /*
299 * call this function only by start of driver
300 */
301
snd_gf1_start(struct snd_gus_card * gus)302 int snd_gf1_start(struct snd_gus_card * gus)
303 {
304 unsigned long flags;
305 unsigned int i;
306
307 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
308 udelay(160);
309 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
310 udelay(160);
311 snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
312
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);
317 }
318
319 snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
320
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);
324 }
325 snd_gf1_clear_regs(gus);
326 snd_gf1_select_active_voices(gus);
327 snd_gf1_delay(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) {
331 gus->gf1.hw_lfo = 1;
332 gus->gf1.default_voice_address += 1024;
333 } else {
334 gus->gf1.sw_lfo = 1;
335 }
336 #if 0
337 snd_gf1_lfo_init(gus);
338 #endif
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);
345 udelay(160);
346 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
347 udelay(160);
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);
352 }
353 while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
354
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);
359
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);
366 #endif
367
368 #if 0
369 if (gus->pnp_flag) {
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);
375 }
376 #endif
377
378 return 0;
379 }
380
381 /*
382 * call this function only by shutdown of driver
383 */
384
snd_gf1_stop(struct snd_gus_card * gus)385 int snd_gf1_stop(struct snd_gus_card * gus)
386 {
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);
392 #if 0
393 snd_gf1_lfo_done(gus);
394 #endif
395 return 0;
396 }
397