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