sound/isa/gus/gus_reset.c

   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 }