412 строки
13 KiB
C
412 строки
13 KiB
C
/*
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/time.h>
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#include <sound/core.h>
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#include <sound/gus.h>
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extern void snd_gf1_timers_init(struct snd_gus_card * gus);
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extern void snd_gf1_timers_done(struct snd_gus_card * gus);
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extern int snd_gf1_synth_init(struct snd_gus_card * gus);
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extern void snd_gf1_synth_done(struct snd_gus_card * gus);
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/*
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* ok.. default interrupt handlers...
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*/
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static void snd_gf1_default_interrupt_handler_midi_out(struct snd_gus_card * gus)
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{
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snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x20);
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}
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static void snd_gf1_default_interrupt_handler_midi_in(struct snd_gus_card * gus)
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{
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snd_gf1_uart_cmd(gus, gus->gf1.uart_cmd &= ~0x80);
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}
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static void snd_gf1_default_interrupt_handler_timer1(struct snd_gus_card * gus)
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{
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~4);
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}
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static void snd_gf1_default_interrupt_handler_timer2(struct snd_gus_card * gus)
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{
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, gus->gf1.timer_enabled &= ~8);
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}
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static void snd_gf1_default_interrupt_handler_wave_and_volume(struct snd_gus_card * gus, struct snd_gus_voice * voice)
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{
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snd_gf1_i_ctrl_stop(gus, 0x00);
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snd_gf1_i_ctrl_stop(gus, 0x0d);
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}
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static void snd_gf1_default_interrupt_handler_dma_write(struct snd_gus_card * gus)
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{
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snd_gf1_i_write8(gus, 0x41, 0x00);
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}
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static void snd_gf1_default_interrupt_handler_dma_read(struct snd_gus_card * gus)
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{
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snd_gf1_i_write8(gus, 0x49, 0x00);
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}
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void snd_gf1_set_default_handlers(struct snd_gus_card * gus, unsigned int what)
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{
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if (what & SNDRV_GF1_HANDLER_MIDI_OUT)
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gus->gf1.interrupt_handler_midi_out = snd_gf1_default_interrupt_handler_midi_out;
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if (what & SNDRV_GF1_HANDLER_MIDI_IN)
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gus->gf1.interrupt_handler_midi_in = snd_gf1_default_interrupt_handler_midi_in;
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if (what & SNDRV_GF1_HANDLER_TIMER1)
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gus->gf1.interrupt_handler_timer1 = snd_gf1_default_interrupt_handler_timer1;
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if (what & SNDRV_GF1_HANDLER_TIMER2)
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gus->gf1.interrupt_handler_timer2 = snd_gf1_default_interrupt_handler_timer2;
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if (what & SNDRV_GF1_HANDLER_VOICE) {
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struct snd_gus_voice *voice;
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voice = &gus->gf1.voices[what & 0xffff];
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voice->handler_wave =
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voice->handler_volume = snd_gf1_default_interrupt_handler_wave_and_volume;
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voice->handler_effect = NULL;
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voice->volume_change = NULL;
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}
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if (what & SNDRV_GF1_HANDLER_DMA_WRITE)
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gus->gf1.interrupt_handler_dma_write = snd_gf1_default_interrupt_handler_dma_write;
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if (what & SNDRV_GF1_HANDLER_DMA_READ)
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gus->gf1.interrupt_handler_dma_read = snd_gf1_default_interrupt_handler_dma_read;
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}
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/*
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*/
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static void snd_gf1_clear_regs(struct snd_gus_card * gus)
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{
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unsigned long flags;
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spin_lock_irqsave(&gus->reg_lock, flags);
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inb(GUSP(gus, IRQSTAT));
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snd_gf1_write8(gus, 0x41, 0); /* DRAM DMA Control Register */
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snd_gf1_write8(gus, 0x45, 0); /* Timer Control */
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snd_gf1_write8(gus, 0x49, 0); /* Sampling Control Register */
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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}
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static void snd_gf1_look_regs(struct snd_gus_card * gus)
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{
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unsigned long flags;
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_look8(gus, 0x41); /* DRAM DMA Control Register */
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snd_gf1_look8(gus, 0x49); /* Sampling Control Register */
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inb(GUSP(gus, IRQSTAT));
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snd_gf1_read8(gus, 0x0f); /* IRQ Source Register */
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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}
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/*
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* put selected GF1 voices to initial stage...
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*/
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void snd_gf1_smart_stop_voice(struct snd_gus_card * gus, unsigned short voice)
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{
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unsigned long flags;
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_select_voice(gus, voice);
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#if 0
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printk(KERN_DEBUG " -%i- smart stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
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#endif
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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}
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void snd_gf1_stop_voice(struct snd_gus_card * gus, unsigned short voice)
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{
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unsigned long flags;
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_select_voice(gus, voice);
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#if 0
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printk(KERN_DEBUG " -%i- stop voice - volume = 0x%x\n", voice, snd_gf1_i_read16(gus, SNDRV_GF1_VW_VOLUME));
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#endif
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
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if (gus->gf1.enh_mode)
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snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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#if 0
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snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_VIBRATO);
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snd_gf1_lfo_shutdown(gus, voice, ULTRA_LFO_TREMOLO);
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#endif
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}
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static void snd_gf1_clear_voices(struct snd_gus_card * gus, unsigned short v_min,
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unsigned short v_max)
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{
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unsigned long flags;
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unsigned int daddr;
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unsigned short i, w_16;
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daddr = gus->gf1.default_voice_address << 4;
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for (i = v_min; i <= v_max; i++) {
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#if 0
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if (gus->gf1.syn_voices)
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gus->gf1.syn_voices[i].flags = ~VFLG_DYNAMIC;
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#endif
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_select_voice(gus, i);
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_ADDRESS_CONTROL); /* Voice Control Register = voice stop */
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snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL); /* Volume Ramp Control Register = ramp off */
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if (gus->gf1.enh_mode)
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snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, gus->gf1.memory ? 0x02 : 0x82); /* Deactivate voice */
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w_16 = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & 0x04;
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snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, 0x400);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, daddr, w_16);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, daddr, w_16);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, 0);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, 0);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0);
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snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, 0);
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snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, daddr, w_16);
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snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, 7);
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if (gus->gf1.enh_mode) {
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snd_gf1_write8(gus, SNDRV_GF1_VB_ACCUMULATOR, 0);
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snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME, 0);
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snd_gf1_write16(gus, SNDRV_GF1_VW_EFFECT_VOLUME_FINAL, 0);
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}
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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#if 0
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snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_VIBRATO);
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snd_gf1_lfo_shutdown(gus, i, ULTRA_LFO_TREMOLO);
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#endif
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}
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}
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void snd_gf1_stop_voices(struct snd_gus_card * gus, unsigned short v_min, unsigned short v_max)
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{
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unsigned long flags;
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short i, ramp_ok;
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unsigned short ramp_end;
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if (!in_interrupt()) { /* this can't be done in interrupt */
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for (i = v_min, ramp_ok = 0; i <= v_max; i++) {
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spin_lock_irqsave(&gus->reg_lock, flags);
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snd_gf1_select_voice(gus, i);
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ramp_end = snd_gf1_read16(gus, 9) >> 8;
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if (ramp_end > SNDRV_GF1_MIN_OFFSET) {
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ramp_ok++;
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 20); /* ramp rate */
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET); /* ramp start */
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, ramp_end); /* ramp end */
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40); /* ramp down */
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if (gus->gf1.enh_mode) {
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snd_gf1_delay(gus);
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snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, 0x40);
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}
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}
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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}
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msleep_interruptible(50);
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}
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snd_gf1_clear_voices(gus, v_min, v_max);
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}
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static void snd_gf1_alloc_voice_use(struct snd_gus_card * gus,
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struct snd_gus_voice * pvoice,
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int type, int client, int port)
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{
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pvoice->use = 1;
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switch (type) {
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case SNDRV_GF1_VOICE_TYPE_PCM:
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gus->gf1.pcm_alloc_voices++;
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pvoice->pcm = 1;
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break;
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case SNDRV_GF1_VOICE_TYPE_SYNTH:
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pvoice->synth = 1;
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pvoice->client = client;
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pvoice->port = port;
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break;
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case SNDRV_GF1_VOICE_TYPE_MIDI:
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pvoice->midi = 1;
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pvoice->client = client;
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pvoice->port = port;
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break;
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}
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}
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struct snd_gus_voice *snd_gf1_alloc_voice(struct snd_gus_card * gus, int type, int client, int port)
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{
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struct snd_gus_voice *pvoice;
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unsigned long flags;
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int idx;
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spin_lock_irqsave(&gus->voice_alloc, flags);
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if (type == SNDRV_GF1_VOICE_TYPE_PCM) {
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if (gus->gf1.pcm_alloc_voices >= gus->gf1.pcm_channels) {
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spin_unlock_irqrestore(&gus->voice_alloc, flags);
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return NULL;
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}
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}
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for (idx = 0; idx < 32; idx++) {
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pvoice = &gus->gf1.voices[idx];
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if (!pvoice->use) {
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snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
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spin_unlock_irqrestore(&gus->voice_alloc, flags);
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return pvoice;
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}
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}
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for (idx = 0; idx < 32; idx++) {
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pvoice = &gus->gf1.voices[idx];
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if (pvoice->midi && !pvoice->client) {
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snd_gf1_clear_voices(gus, pvoice->number, pvoice->number);
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snd_gf1_alloc_voice_use(gus, pvoice, type, client, port);
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spin_unlock_irqrestore(&gus->voice_alloc, flags);
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return pvoice;
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}
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}
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spin_unlock_irqrestore(&gus->voice_alloc, flags);
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return NULL;
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}
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void snd_gf1_free_voice(struct snd_gus_card * gus, struct snd_gus_voice *voice)
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{
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unsigned long flags;
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void (*private_free)(struct snd_gus_voice *voice);
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if (voice == NULL || !voice->use)
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return;
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snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | voice->number);
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snd_gf1_clear_voices(gus, voice->number, voice->number);
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spin_lock_irqsave(&gus->voice_alloc, flags);
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private_free = voice->private_free;
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voice->private_free = NULL;
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voice->private_data = NULL;
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if (voice->pcm)
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gus->gf1.pcm_alloc_voices--;
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voice->use = voice->pcm = 0;
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voice->sample_ops = NULL;
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spin_unlock_irqrestore(&gus->voice_alloc, flags);
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if (private_free)
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private_free(voice);
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}
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/*
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* call this function only by start of driver
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*/
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int snd_gf1_start(struct snd_gus_card * gus)
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{
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unsigned long flags;
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unsigned int i;
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0); /* reset GF1 */
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udelay(160);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
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udelay(160);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_JOYSTICK_DAC_LEVEL, gus->joystick_dac);
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snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_ALL);
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for (i = 0; i < 32; i++) {
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gus->gf1.voices[i].number = i;
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snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_VOICE | i);
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}
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snd_gf1_uart_cmd(gus, 0x03); /* huh.. this cleanup took me some time... */
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if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
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}
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snd_gf1_clear_regs(gus);
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snd_gf1_select_active_voices(gus);
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snd_gf1_delay(gus);
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gus->gf1.default_voice_address = gus->gf1.memory > 0 ? 0 : 512 - 8;
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/* initialize LFOs & clear LFOs memory */
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if (gus->gf1.enh_mode && gus->gf1.memory) {
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gus->gf1.hw_lfo = 1;
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gus->gf1.default_voice_address += 1024;
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} else {
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gus->gf1.sw_lfo = 1;
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}
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#if 0
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snd_gf1_lfo_init(gus);
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#endif
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if (gus->gf1.memory > 0)
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for (i = 0; i < 4; i++)
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snd_gf1_poke(gus, gus->gf1.default_voice_address + i, 0);
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snd_gf1_clear_regs(gus);
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snd_gf1_clear_voices(gus, 0, 31);
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snd_gf1_look_regs(gus);
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udelay(160);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
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udelay(160);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 7); /* Reset Register = IRQ enable, DAC enable */
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if (gus->gf1.enh_mode) { /* enhanced mode !!!! */
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_GLOBAL_MODE, snd_gf1_i_look8(gus, SNDRV_GF1_GB_GLOBAL_MODE) | 0x01);
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01);
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}
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while ((snd_gf1_i_read8(gus, SNDRV_GF1_GB_VOICES_IRQ) & 0xc0) != 0xc0);
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spin_lock_irqsave(&gus->reg_lock, flags);
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outb(gus->gf1.active_voice = 0, GUSP(gus, GF1PAGE));
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outb(gus->mix_cntrl_reg, GUSP(gus, MIXCNTRLREG));
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spin_unlock_irqrestore(&gus->reg_lock, flags);
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snd_gf1_timers_init(gus);
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snd_gf1_look_regs(gus);
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snd_gf1_mem_init(gus);
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snd_gf1_mem_proc_init(gus);
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#ifdef CONFIG_SND_DEBUG
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snd_gus_irq_profile_init(gus);
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#endif
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#if 0
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if (gus->pnp_flag) {
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if (gus->chip.playback_fifo_size > 0)
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snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_RECORD_BASE_ADDR, gus->chip.playback_fifo_block->ptr >> 8);
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if (gus->chip.record_fifo_size > 0)
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snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_PLAY_BASE_ADDR, gus->chip.record_fifo_block->ptr >> 8);
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snd_gf1_i_write16(gus, SNDRV_GF1_GW_FIFO_SIZE, gus->chip.interwave_fifo_reg);
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}
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#endif
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return 0;
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}
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/*
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* call this function only by shutdown of driver
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*/
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int snd_gf1_stop(struct snd_gus_card * gus)
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{
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_SOUND_BLASTER_CONTROL, 0); /* stop all timers */
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snd_gf1_stop_voices(gus, 0, 31); /* stop all voices */
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snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1); /* disable IRQ & DAC */
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snd_gf1_timers_done(gus);
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snd_gf1_mem_done(gus);
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#if 0
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snd_gf1_lfo_done(gus);
|
|
#endif
|
|
return 0;
|
|
}
|