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