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 guard(spinlock_irqsave)(&gus->reg_lock); 87 inb(GUSP(gus, IRQSTAT)); 88 snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */ 89 snd_gf1_write8(gus, 0x45, 0); /* Timer Control */ 90 snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */ 91 } 92 93 static void snd_gf1_look_regs(struct snd_gus_card * gus) 94 { 95 guard(spinlock_irqsave)(&gus->reg_lock); 96 snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */ 97 snd_gf1_look8(gus, 0x49); /* Sampling Control Register */ 98 inb(GUSP(gus, IRQSTAT)); 99 snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */ 100 } 101 102 /* 103 * put selected GF1 voices to initial stage... 104 */ 105 106 void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice) 107 { 108 guard(spinlock_irqsave)(&gus->reg_lock); 109 snd_gf1_select_voice(gus, voice); 110 #if 0 111 dev_dbg(gus->card->dev, 112 " -%i- smart stop voice - volume = 0x%x\n", 113 voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME)); 114 #endif 115 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 116 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 117 } 118 119 void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice) 120 { 121 guard(spinlock_irqsave)(&gus->reg_lock); 122 snd_gf1_select_voice(gus, voice); 123 #if 0 124 dev_dbg(gus->card->dev, 125 " -%i- stop voice - volume = 0x%x\n", 126 voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME)); 127 #endif 128 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); 129 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); 130 if (gus->gf1.enh_mode) 131 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0); 132 } 133 134 static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min, 135 unsigned short v_max) 136 { 137 unsigned int daddr; 138 unsigned short i, w_16; 139 140 daddr = gus->gf1.default_voice_address << 4; 141 for (i = v_min; i <= v_max; i++) { 142 #if 0 143 if (gus->gf1.syn_voices) 144 gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC; 145 #endif 146 guard(spinlock_irqsave)(&gus->reg_lock); 147 snd_gf1_select_voice(gus, i); 148 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */ 149 snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */ 150 if (gus->gf1.enh_mode) 151 snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */ 152 w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04; 153 snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400); 154 snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16); 155 snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16); 156 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0); 157 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0); 158 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0); 159 snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0); 160 snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16); 161 snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7); 162 if (gus->gf1.enh_mode) { 163 snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0); 164 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0); 165 snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0); 166 } 167 } 168 } 169 170 void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max) 171 { 172 short i, ramp_ok; 173 unsigned short ramp_end; 174 175 if (!in_interrupt()) { /* this can't be done in interrupt */ 176 for (i = v_min, ramp_ok = 0; i <= v_max; i++) { 177 guard(spinlock_irqsave)(&gus->reg_lock); 178 snd_gf1_select_voice(gus, i); 179 ramp_end = snd_gf1_read16(gus, 9) >> 8; 180 if (ramp_end > SNDRV_GF1_MIN_OFFSET) { 181 ramp_ok++; 182 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */ 183 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */ 184 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */ 185 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */ 186 if (gus->gf1.enh_mode) { 187 snd_gf1_delay(gus); 188 snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); 189 } 190 } 191 } 192 msleep_interruptible(50); 193 } 194 snd_gf1_clear_voices(gus, v_min, v_max); 195 } 196 197 static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus, 198 struct snd_gus_voice * pvoice, 199 int type, int client, int port) 200 { 201 pvoice->use = 1; 202 switch (type) { 203 case SNDRV_GF1_VOICE_TYPE_PCM: 204 gus->gf1.pcm_alloc_voices++; 205 pvoice->pcm = 1; 206 break; 207 case SNDRV_GF1_VOICE_TYPE_SYNTH: 208 pvoice->synth = 1; 209 pvoice->client = client; 210 pvoice->port = port; 211 break; 212 case SNDRV_GF1_VOICE_TYPE_MIDI: 213 pvoice->midi = 1; 214 pvoice->client = client; 215 pvoice->port = port; 216 break; 217 } 218 } 219 220 struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port) 221 { 222 struct snd_gus_voice *pvoice; 223 int idx; 224 225 guard(spinlock_irqsave)(&gus->voice_alloc); 226 if (type == SNDRV_GF1_VOICE_TYPE_PCM) { 227 if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) 228 return NULL; 229 } 230 for (idx = 0; idx < 32; idx++) { 231 pvoice = &gus->gf1.voices[idx]; 232 if (!pvoice->use) { 233 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port); 234 return pvoice; 235 } 236 } 237 for (idx = 0; idx < 32; idx++) { 238 pvoice = &gus->gf1.voices[idx]; 239 if (pvoice->midi && !pvoice->client) { 240 snd_gf1_clear_voices(gus, pvoice->number, pvoice->number); 241 snd_gf1_alloc_voice_use(gus, pvoice, type, client, port); 242 return pvoice; 243 } 244 } 245 return NULL; 246 } 247 248 void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice) 249 { 250 void (*private_free)(struct snd_gus_voice *voice); 251 252 if (voice == NULL || !voice->use) 253 return; 254 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number); 255 snd_gf1_clear_voices(gus, voice->number, voice->number); 256 scoped_guard(spinlock_irqsave, &gus->voice_alloc) { 257 private_free = voice->private_free; 258 voice->private_free = NULL; 259 voice->private_data = NULL; 260 if (voice->pcm) 261 gus->gf1.pcm_alloc_voices--; 262 voice->use = voice->pcm = 0; 263 voice->sample_ops = NULL; 264 } 265 if (private_free) 266 private_free(voice); 267 } 268 269 /* 270 * call this function only by start of driver 271 */ 272 273 int snd_gf1_start(struct snd_gus_card * gus) 274 { 275 unsigned int i; 276 277 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */ 278 udelay(160); 279 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */ 280 udelay(160); 281 snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac); 282 283 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL); 284 for (i = 0; i < 32; i++) { 285 gus->gf1.voices[i].number = i; 286 snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i); 287 } 288 289 snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */ 290 291 if (gus->gf1.enh_mode) { /* enhanced mode !!!! */ 292 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01); 293 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01); 294 } 295 snd_gf1_clear_regs(gus); 296 snd_gf1_select_active_voices(gus); 297 snd_gf1_delay(gus); 298 gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8; 299 /* initialize LFOs & clear LFOs memory */ 300 if (gus->gf1.enh_mode && gus->gf1.memory) { 301 gus->gf1.hw_lfo = 1; 302 gus->gf1.default_voice_address += 1024; 303 } else { 304 gus->gf1.sw_lfo = 1; 305 } 306 307 if (gus->gf1.memory > 0) 308 for (i = 0; i < 4; i++) 309 snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0); 310 snd_gf1_clear_regs(gus); 311 snd_gf1_clear_voices(gus, 0, 31); 312 snd_gf1_look_regs(gus); 313 udelay(160); 314 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */ 315 udelay(160); 316 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */ 317 if (gus->gf1.enh_mode) { /* enhanced mode !!!! */ 318 snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01); 319 snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01); 320 } 321 while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0); 322 323 scoped_guard(spinlock_irqsave, &gus->reg_lock) { 324 outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE)); 325 outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG)); 326 } 327 328 snd_gf1_timers_init(gus); 329 snd_gf1_look_regs(gus); 330 snd_gf1_mem_init(gus); 331 snd_gf1_mem_proc_init(gus); 332 #ifdef CONFIG_SND_DEBUG 333 snd_gus_irq_profile_init(gus); 334 #endif 335 336 #if 0 337 if (gus->pnp_flag) { 338 if (gus->chip.playback_fifo_size > 0) 339 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8); 340 if (gus->chip.record_fifo_size > 0) 341 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8); 342 snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg); 343 } 344 #endif 345 346 return 0; 347 } 348 349 /* 350 * call this function only by shutdown of driver 351 */ 352 353 int snd_gf1_stop(struct snd_gus_card * gus) 354 { 355 snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */ 356 snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */ 357 snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */ 358 snd_gf1_timers_done(gus); 359 snd_gf1_mem_done(gus); 360 361 return 0; 362 } 363