--- /dev/null
+/*
+ * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
+ * Routines for control of GF1 chip (PCM things)
+ *
+ * InterWave chips supports interleaved DMA, but this feature isn't used in
+ * this code.
+ *
+ * This code emulates autoinit DMA transfer for playback, recording by GF1
+ * chip doesn't support autoinit DMA.
+ *
+ *
+ * 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 <asm/dma.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/control.h>
+#include <sound/gus.h>
+#include <sound/pcm_params.h>
+#include "gus_tables.h"
+
+/* maximum rate */
+
+#define SNDRV_GF1_PCM_RATE 48000
+
+#define SNDRV_GF1_PCM_PFLG_NONE 0
+#define SNDRV_GF1_PCM_PFLG_ACTIVE (1<<0)
+#define SNDRV_GF1_PCM_PFLG_NEUTRAL (2<<0)
+
+struct gus_pcm_private {
+ struct snd_gus_card * gus;
+ struct snd_pcm_substream *substream;
+ spinlock_t lock;
+ unsigned int voices;
+ struct snd_gus_voice *pvoices[2];
+ unsigned int memory;
+ unsigned short flags;
+ unsigned char voice_ctrl, ramp_ctrl;
+ unsigned int bpos;
+ unsigned int blocks;
+ unsigned int block_size;
+ unsigned int dma_size;
+ wait_queue_head_t sleep;
+ atomic_t dma_count;
+ int final_volume;
+};
+
+static int snd_gf1_pcm_use_dma = 1;
+
+static void snd_gf1_pcm_block_change_ack(struct snd_gus_card * gus, void *private_data)
+{
+ struct gus_pcm_private *pcmp = private_data;
+
+ if (pcmp) {
+ atomic_dec(&pcmp->dma_count);
+ wake_up(&pcmp->sleep);
+ }
+}
+
+static int snd_gf1_pcm_block_change(struct snd_pcm_substream *substream,
+ unsigned int offset,
+ unsigned int addr,
+ unsigned int count)
+{
+ struct snd_gf1_dma_block block;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+
+ count += offset & 31;
+ offset &= ~31;
+ /*
+ snd_printk(KERN_DEBUG "block change - offset = 0x%x, count = 0x%x\n",
+ offset, count);
+ */
+ memset(&block, 0, sizeof(block));
+ block.cmd = SNDRV_GF1_DMA_IRQ;
+ if (snd_pcm_format_unsigned(runtime->format))
+ block.cmd |= SNDRV_GF1_DMA_UNSIGNED;
+ if (snd_pcm_format_width(runtime->format) == 16)
+ block.cmd |= SNDRV_GF1_DMA_16BIT;
+ block.addr = addr & ~31;
+ block.buffer = runtime->dma_area + offset;
+ block.buf_addr = runtime->dma_addr + offset;
+ block.count = count;
+ block.private_data = pcmp;
+ block.ack = snd_gf1_pcm_block_change_ack;
+ if (!snd_gf1_dma_transfer_block(pcmp->gus, &block, 0, 0))
+ atomic_inc(&pcmp->dma_count);
+ return 0;
+}
+
+static void snd_gf1_pcm_trigger_up(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ struct snd_gus_card * gus = pcmp->gus;
+ unsigned long flags;
+ unsigned char voice_ctrl, ramp_ctrl;
+ unsigned short rate;
+ unsigned int curr, begin, end;
+ unsigned short vol;
+ unsigned char pan;
+ unsigned int voice;
+
+ spin_lock_irqsave(&pcmp->lock, flags);
+ if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
+ spin_unlock_irqrestore(&pcmp->lock, flags);
+ return;
+ }
+ pcmp->flags |= SNDRV_GF1_PCM_PFLG_ACTIVE;
+ pcmp->final_volume = 0;
+ spin_unlock_irqrestore(&pcmp->lock, flags);
+ rate = snd_gf1_translate_freq(gus, runtime->rate << 4);
+ /* enable WAVE IRQ */
+ voice_ctrl = snd_pcm_format_width(runtime->format) == 16 ? 0x24 : 0x20;
+ /* enable RAMP IRQ + rollover */
+ ramp_ctrl = 0x24;
+ if (pcmp->blocks == 1) {
+ voice_ctrl |= 0x08; /* loop enable */
+ ramp_ctrl &= ~0x04; /* disable rollover */
+ }
+ for (voice = 0; voice < pcmp->voices; voice++) {
+ begin = pcmp->memory + voice * (pcmp->dma_size / runtime->channels);
+ curr = begin + (pcmp->bpos * pcmp->block_size) / runtime->channels;
+ end = curr + (pcmp->block_size / runtime->channels);
+ end -= snd_pcm_format_width(runtime->format) == 16 ? 2 : 1;
+ /*
+ snd_printk(KERN_DEBUG "init: curr=0x%x, begin=0x%x, end=0x%x, "
+ "ctrl=0x%x, ramp=0x%x, rate=0x%x\n",
+ curr, begin, end, voice_ctrl, ramp_ctrl, rate);
+ */
+ pan = runtime->channels == 2 ? (!voice ? 1 : 14) : 8;
+ vol = !voice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
+ spin_lock_irqsave(&gus->reg_lock, flags);
+ snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_PAN, pan);
+ snd_gf1_write16(gus, SNDRV_GF1_VW_FREQUENCY, rate);
+ snd_gf1_write_addr(gus, SNDRV_GF1_VA_START, begin << 4, voice_ctrl & 4);
+ snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
+ snd_gf1_write_addr(gus, SNDRV_GF1_VA_CURRENT, curr << 4, voice_ctrl & 4);
+ snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, SNDRV_GF1_MIN_VOLUME << 4);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_RATE, 0x2f);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_START, SNDRV_GF1_MIN_OFFSET);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_END, vol >> 8);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
+ if (!gus->gf1.enh_mode) {
+ snd_gf1_delay(gus);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
+ }
+ spin_unlock_irqrestore(&gus->reg_lock, flags);
+ }
+ spin_lock_irqsave(&gus->reg_lock, flags);
+ for (voice = 0; voice < pcmp->voices; voice++) {
+ snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
+ if (gus->gf1.enh_mode)
+ snd_gf1_write8(gus, SNDRV_GF1_VB_MODE, 0x00); /* deactivate voice */
+ snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
+ voice_ctrl &= ~0x20;
+ }
+ voice_ctrl |= 0x20;
+ if (!gus->gf1.enh_mode) {
+ snd_gf1_delay(gus);
+ for (voice = 0; voice < pcmp->voices; voice++) {
+ snd_gf1_select_voice(gus, pcmp->pvoices[voice]->number);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
+ voice_ctrl &= ~0x20; /* disable IRQ for next voice */
+ }
+ }
+ spin_unlock_irqrestore(&gus->reg_lock, flags);
+}
+
+static void snd_gf1_pcm_interrupt_wave(struct snd_gus_card * gus,
+ struct snd_gus_voice *pvoice)
+{
+ struct gus_pcm_private * pcmp;
+ struct snd_pcm_runtime *runtime;
+ unsigned char voice_ctrl, ramp_ctrl;
+ unsigned int idx;
+ unsigned int end, step;
+
+ if (!pvoice->private_data) {
+ snd_printd("snd_gf1_pcm: unknown wave irq?\n");
+ snd_gf1_smart_stop_voice(gus, pvoice->number);
+ return;
+ }
+ pcmp = pvoice->private_data;
+ if (pcmp == NULL) {
+ snd_printd("snd_gf1_pcm: unknown wave irq?\n");
+ snd_gf1_smart_stop_voice(gus, pvoice->number);
+ return;
+ }
+ gus = pcmp->gus;
+ runtime = pcmp->substream->runtime;
+
+ spin_lock(&gus->reg_lock);
+ snd_gf1_select_voice(gus, pvoice->number);
+ voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL) & ~0x8b;
+ ramp_ctrl = (snd_gf1_read8(gus, SNDRV_GF1_VB_VOLUME_CONTROL) & ~0xa4) | 0x03;
+#if 0
+ snd_gf1_select_voice(gus, pvoice->number);
+ printk(KERN_DEBUG "position = 0x%x\n",
+ (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
+ snd_gf1_select_voice(gus, pcmp->pvoices[1]->number);
+ printk(KERN_DEBUG "position = 0x%x\n",
+ (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4));
+ snd_gf1_select_voice(gus, pvoice->number);
+#endif
+ pcmp->bpos++;
+ pcmp->bpos %= pcmp->blocks;
+ if (pcmp->bpos + 1 >= pcmp->blocks) { /* last block? */
+ voice_ctrl |= 0x08; /* enable loop */
+ } else {
+ ramp_ctrl |= 0x04; /* enable rollover */
+ }
+ end = pcmp->memory + (((pcmp->bpos + 1) * pcmp->block_size) / runtime->channels);
+ end -= voice_ctrl & 4 ? 2 : 1;
+ step = pcmp->dma_size / runtime->channels;
+ voice_ctrl |= 0x20;
+ if (!pcmp->final_volume) {
+ ramp_ctrl |= 0x20;
+ ramp_ctrl &= ~0x03;
+ }
+ for (idx = 0; idx < pcmp->voices; idx++, end += step) {
+ snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
+ snd_gf1_write_addr(gus, SNDRV_GF1_VA_END, end << 4, voice_ctrl & 4);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
+ voice_ctrl &= ~0x20;
+ }
+ if (!gus->gf1.enh_mode) {
+ snd_gf1_delay(gus);
+ voice_ctrl |= 0x20;
+ for (idx = 0; idx < pcmp->voices; idx++) {
+ snd_gf1_select_voice(gus, pcmp->pvoices[idx]->number);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL, voice_ctrl);
+ snd_gf1_write8(gus, SNDRV_GF1_VB_VOLUME_CONTROL, ramp_ctrl);
+ voice_ctrl &= ~0x20;
+ }
+ }
+ spin_unlock(&gus->reg_lock);
+
+ snd_pcm_period_elapsed(pcmp->substream);
+#if 0
+ if ((runtime->flags & SNDRV_PCM_FLG_MMAP) &&
+ *runtime->state == SNDRV_PCM_STATE_RUNNING) {
+ end = pcmp->bpos * pcmp->block_size;
+ if (runtime->channels > 1) {
+ snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + (end / 2), pcmp->block_size / 2);
+ snd_gf1_pcm_block_change(pcmp->substream, end + (pcmp->block_size / 2), pcmp->memory + (pcmp->dma_size / 2) + (end / 2), pcmp->block_size / 2);
+ } else {
+ snd_gf1_pcm_block_change(pcmp->substream, end, pcmp->memory + end, pcmp->block_size);
+ }
+ }
+#endif
+}
+
+static void snd_gf1_pcm_interrupt_volume(struct snd_gus_card * gus,
+ struct snd_gus_voice * pvoice)
+{
+ unsigned short vol;
+ int cvoice;
+ struct gus_pcm_private *pcmp = pvoice->private_data;
+
+ /* stop ramp, but leave rollover bit untouched */
+ spin_lock(&gus->reg_lock);
+ snd_gf1_select_voice(gus, pvoice->number);
+ snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
+ spin_unlock(&gus->reg_lock);
+ if (pcmp == NULL)
+ return;
+ /* are we active? */
+ if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
+ return;
+ /* load real volume - better precision */
+ cvoice = pcmp->pvoices[0] == pvoice ? 0 : 1;
+ if (pcmp->substream == NULL)
+ return;
+ vol = !cvoice ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
+ spin_lock(&gus->reg_lock);
+ snd_gf1_select_voice(gus, pvoice->number);
+ snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
+ pcmp->final_volume = 1;
+ spin_unlock(&gus->reg_lock);
+}
+
+static void snd_gf1_pcm_volume_change(struct snd_gus_card * gus)
+{
+}
+
+static int snd_gf1_pcm_poke_block(struct snd_gus_card *gus, unsigned char *buf,
+ unsigned int pos, unsigned int count,
+ int w16, int invert)
+{
+ unsigned int len;
+ unsigned long flags;
+
+ /*
+ printk(KERN_DEBUG
+ "poke block; buf = 0x%x, pos = %i, count = %i, port = 0x%x\n",
+ (int)buf, pos, count, gus->gf1.port);
+ */
+ while (count > 0) {
+ len = count;
+ if (len > 512) /* limit, to allow IRQ */
+ len = 512;
+ count -= len;
+ if (gus->interwave) {
+ spin_lock_irqsave(&gus->reg_lock, flags);
+ snd_gf1_write8(gus, SNDRV_GF1_GB_MEMORY_CONTROL, 0x01 | (invert ? 0x08 : 0x00));
+ snd_gf1_dram_addr(gus, pos);
+ if (w16) {
+ outb(SNDRV_GF1_GW_DRAM_IO16, GUSP(gus, GF1REGSEL));
+ outsw(GUSP(gus, GF1DATALOW), buf, len >> 1);
+ } else {
+ outsb(GUSP(gus, DRAM), buf, len);
+ }
+ spin_unlock_irqrestore(&gus->reg_lock, flags);
+ buf += 512;
+ pos += 512;
+ } else {
+ invert = invert ? 0x80 : 0x00;
+ if (w16) {
+ len >>= 1;
+ while (len--) {
+ snd_gf1_poke(gus, pos++, *buf++);
+ snd_gf1_poke(gus, pos++, *buf++ ^ invert);
+ }
+ } else {
+ while (len--)
+ snd_gf1_poke(gus, pos++, *buf++ ^ invert);
+ }
+ }
+ if (count > 0 && !in_interrupt()) {
+ schedule_timeout_interruptible(1);
+ if (signal_pending(current))
+ return -EAGAIN;
+ }
+ }
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_copy(struct snd_pcm_substream *substream,
+ int voice,
+ snd_pcm_uframes_t pos,
+ void __user *src,
+ snd_pcm_uframes_t count)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int bpos, len;
+
+ bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
+ len = samples_to_bytes(runtime, count);
+ if (snd_BUG_ON(bpos > pcmp->dma_size))
+ return -EIO;
+ if (snd_BUG_ON(bpos + len > pcmp->dma_size))
+ return -EIO;
+ if (copy_from_user(runtime->dma_area + bpos, src, len))
+ return -EFAULT;
+ if (snd_gf1_pcm_use_dma && len > 32) {
+ return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
+ } else {
+ struct snd_gus_card *gus = pcmp->gus;
+ int err, w16, invert;
+
+ w16 = (snd_pcm_format_width(runtime->format) == 16);
+ invert = snd_pcm_format_unsigned(runtime->format);
+ if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
+ return err;
+ }
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_silence(struct snd_pcm_substream *substream,
+ int voice,
+ snd_pcm_uframes_t pos,
+ snd_pcm_uframes_t count)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int bpos, len;
+
+ bpos = samples_to_bytes(runtime, pos) + (voice * (pcmp->dma_size / 2));
+ len = samples_to_bytes(runtime, count);
+ if (snd_BUG_ON(bpos > pcmp->dma_size))
+ return -EIO;
+ if (snd_BUG_ON(bpos + len > pcmp->dma_size))
+ return -EIO;
+ snd_pcm_format_set_silence(runtime->format, runtime->dma_area + bpos, count);
+ if (snd_gf1_pcm_use_dma && len > 32) {
+ return snd_gf1_pcm_block_change(substream, bpos, pcmp->memory + bpos, len);
+ } else {
+ struct snd_gus_card *gus = pcmp->gus;
+ int err, w16, invert;
+
+ w16 = (snd_pcm_format_width(runtime->format) == 16);
+ invert = snd_pcm_format_unsigned(runtime->format);
+ if ((err = snd_gf1_pcm_poke_block(gus, runtime->dma_area + bpos, pcmp->memory + bpos, len, w16, invert)) < 0)
+ return err;
+ }
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ int err;
+
+ if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
+ return err;
+ if (err > 0) { /* change */
+ struct snd_gf1_mem_block *block;
+ if (pcmp->memory > 0) {
+ snd_gf1_mem_free(&gus->gf1.mem_alloc, pcmp->memory);
+ pcmp->memory = 0;
+ }
+ if ((block = snd_gf1_mem_alloc(&gus->gf1.mem_alloc,
+ SNDRV_GF1_MEM_OWNER_DRIVER,
+ "GF1 PCM",
+ runtime->dma_bytes, 1, 32,
+ NULL)) == NULL)
+ return -ENOMEM;
+ pcmp->memory = block->ptr;
+ }
+ pcmp->voices = params_channels(hw_params);
+ if (pcmp->pvoices[0] == NULL) {
+ if ((pcmp->pvoices[0] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
+ return -ENOMEM;
+ pcmp->pvoices[0]->handler_wave = snd_gf1_pcm_interrupt_wave;
+ pcmp->pvoices[0]->handler_volume = snd_gf1_pcm_interrupt_volume;
+ pcmp->pvoices[0]->volume_change = snd_gf1_pcm_volume_change;
+ pcmp->pvoices[0]->private_data = pcmp;
+ }
+ if (pcmp->voices > 1 && pcmp->pvoices[1] == NULL) {
+ if ((pcmp->pvoices[1] = snd_gf1_alloc_voice(pcmp->gus, SNDRV_GF1_VOICE_TYPE_PCM, 0, 0)) == NULL)
+ return -ENOMEM;
+ pcmp->pvoices[1]->handler_wave = snd_gf1_pcm_interrupt_wave;
+ pcmp->pvoices[1]->handler_volume = snd_gf1_pcm_interrupt_volume;
+ pcmp->pvoices[1]->volume_change = snd_gf1_pcm_volume_change;
+ pcmp->pvoices[1]->private_data = pcmp;
+ } else if (pcmp->voices == 1) {
+ if (pcmp->pvoices[1]) {
+ snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
+ pcmp->pvoices[1] = NULL;
+ }
+ }
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+
+ snd_pcm_lib_free_pages(substream);
+ if (pcmp->pvoices[0]) {
+ snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[0]);
+ pcmp->pvoices[0] = NULL;
+ }
+ if (pcmp->pvoices[1]) {
+ snd_gf1_free_voice(pcmp->gus, pcmp->pvoices[1]);
+ pcmp->pvoices[1] = NULL;
+ }
+ if (pcmp->memory > 0) {
+ snd_gf1_mem_free(&pcmp->gus->gf1.mem_alloc, pcmp->memory);
+ pcmp->memory = 0;
+ }
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+
+ pcmp->bpos = 0;
+ pcmp->dma_size = snd_pcm_lib_buffer_bytes(substream);
+ pcmp->block_size = snd_pcm_lib_period_bytes(substream);
+ pcmp->blocks = pcmp->dma_size / pcmp->block_size;
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_trigger(struct snd_pcm_substream *substream,
+ int cmd)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ int voice;
+
+ if (cmd == SNDRV_PCM_TRIGGER_START) {
+ snd_gf1_pcm_trigger_up(substream);
+ } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+ spin_lock(&pcmp->lock);
+ pcmp->flags &= ~SNDRV_GF1_PCM_PFLG_ACTIVE;
+ spin_unlock(&pcmp->lock);
+ voice = pcmp->pvoices[0]->number;
+ snd_gf1_stop_voices(gus, voice, voice);
+ if (pcmp->pvoices[1]) {
+ voice = pcmp->pvoices[1]->number;
+ snd_gf1_stop_voices(gus, voice, voice);
+ }
+ } else {
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static snd_pcm_uframes_t snd_gf1_pcm_playback_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+ unsigned int pos;
+ unsigned char voice_ctrl;
+
+ pos = 0;
+ spin_lock(&gus->reg_lock);
+ if (pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE) {
+ snd_gf1_select_voice(gus, pcmp->pvoices[0]->number);
+ voice_ctrl = snd_gf1_read8(gus, SNDRV_GF1_VB_ADDRESS_CONTROL);
+ pos = (snd_gf1_read_addr(gus, SNDRV_GF1_VA_CURRENT, voice_ctrl & 4) >> 4) - pcmp->memory;
+ if (substream->runtime->channels > 1)
+ pos <<= 1;
+ pos = bytes_to_frames(runtime, pos);
+ }
+ spin_unlock(&gus->reg_lock);
+ return pos;
+}
+
+static struct snd_ratnum clock = {
+ .num = 9878400/16,
+ .den_min = 2,
+ .den_max = 257,
+ .den_step = 1,
+};
+
+static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks = {
+ .nrats = 1,
+ .rats = &clock,
+};
+
+static int snd_gf1_pcm_capture_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *hw_params)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+
+ gus->c_dma_size = params_buffer_bytes(hw_params);
+ gus->c_period_size = params_period_bytes(hw_params);
+ gus->c_pos = 0;
+ gus->gf1.pcm_rcntrl_reg = 0x21; /* IRQ at end, enable & start */
+ if (params_channels(hw_params) > 1)
+ gus->gf1.pcm_rcntrl_reg |= 2;
+ if (gus->gf1.dma2 > 3)
+ gus->gf1.pcm_rcntrl_reg |= 4;
+ if (snd_pcm_format_unsigned(params_format(hw_params)))
+ gus->gf1.pcm_rcntrl_reg |= 0x80;
+ return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+static int snd_gf1_pcm_capture_hw_free(struct snd_pcm_substream *substream)
+{
+ return snd_pcm_lib_free_pages(substream);
+}
+
+static int snd_gf1_pcm_capture_prepare(struct snd_pcm_substream *substream)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+
+ snd_gf1_i_write8(gus, SNDRV_GF1_GB_RECORD_RATE, runtime->rate_den - 2);
+ snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
+ snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
+ snd_dma_program(gus->gf1.dma2, runtime->dma_addr, gus->c_period_size, DMA_MODE_READ);
+ return 0;
+}
+
+static int snd_gf1_pcm_capture_trigger(struct snd_pcm_substream *substream,
+ int cmd)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ int val;
+
+ if (cmd == SNDRV_PCM_TRIGGER_START) {
+ val = gus->gf1.pcm_rcntrl_reg;
+ } else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+ val = 0;
+ } else {
+ return -EINVAL;
+ }
+
+ spin_lock(&gus->reg_lock);
+ snd_gf1_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, val);
+ snd_gf1_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL);
+ spin_unlock(&gus->reg_lock);
+ return 0;
+}
+
+static snd_pcm_uframes_t snd_gf1_pcm_capture_pointer(struct snd_pcm_substream *substream)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ int pos = snd_dma_pointer(gus->gf1.dma2, gus->c_period_size);
+ pos = bytes_to_frames(substream->runtime, (gus->c_pos + pos) % gus->c_dma_size);
+ return pos;
+}
+
+static void snd_gf1_pcm_interrupt_dma_read(struct snd_gus_card * gus)
+{
+ snd_gf1_i_write8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL, 0); /* disable sampling */
+ snd_gf1_i_look8(gus, SNDRV_GF1_GB_REC_DMA_CONTROL); /* Sampling Control Register */
+ if (gus->pcm_cap_substream != NULL) {
+ snd_gf1_pcm_capture_prepare(gus->pcm_cap_substream);
+ snd_gf1_pcm_capture_trigger(gus->pcm_cap_substream, SNDRV_PCM_TRIGGER_START);
+ gus->c_pos += gus->c_period_size;
+ snd_pcm_period_elapsed(gus->pcm_cap_substream);
+ }
+}
+
+static struct snd_pcm_hardware snd_gf1_pcm_playback =
+{
+ .info = SNDRV_PCM_INFO_NONINTERLEAVED,
+ .formats = (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 |
+ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE),
+ .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+ .rate_min = 5510,
+ .rate_max = 48000,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = (128*1024),
+ .period_bytes_min = 64,
+ .period_bytes_max = (128*1024),
+ .periods_min = 1,
+ .periods_max = 1024,
+ .fifo_size = 0,
+};
+
+static struct snd_pcm_hardware snd_gf1_pcm_capture =
+{
+ .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_MMAP_VALID),
+ .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_44100,
+ .rate_min = 5510,
+ .rate_max = 44100,
+ .channels_min = 1,
+ .channels_max = 2,
+ .buffer_bytes_max = (128*1024),
+ .period_bytes_min = 64,
+ .period_bytes_max = (128*1024),
+ .periods_min = 1,
+ .periods_max = 1024,
+ .fifo_size = 0,
+};
+
+static void snd_gf1_pcm_playback_free(struct snd_pcm_runtime *runtime)
+{
+ kfree(runtime->private_data);
+}
+
+static int snd_gf1_pcm_playback_open(struct snd_pcm_substream *substream)
+{
+ struct gus_pcm_private *pcmp;
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ int err;
+
+ pcmp = kzalloc(sizeof(*pcmp), GFP_KERNEL);
+ if (pcmp == NULL)
+ return -ENOMEM;
+ pcmp->gus = gus;
+ spin_lock_init(&pcmp->lock);
+ init_waitqueue_head(&pcmp->sleep);
+ atomic_set(&pcmp->dma_count, 0);
+
+ runtime->private_data = pcmp;
+ runtime->private_free = snd_gf1_pcm_playback_free;
+
+#if 0
+ printk(KERN_DEBUG "playback.buffer = 0x%lx, gf1.pcm_buffer = 0x%lx\n",
+ (long) pcm->playback.buffer, (long) gus->gf1.pcm_buffer);
+#endif
+ if ((err = snd_gf1_dma_init(gus)) < 0)
+ return err;
+ pcmp->flags = SNDRV_GF1_PCM_PFLG_NONE;
+ pcmp->substream = substream;
+ runtime->hw = snd_gf1_pcm_playback;
+ snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.buffer_bytes_max);
+ snd_pcm_limit_isa_dma_size(gus->gf1.dma1, &runtime->hw.period_bytes_max);
+ snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 64);
+ return 0;
+}
+
+static int snd_gf1_pcm_playback_close(struct snd_pcm_substream *substream)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct gus_pcm_private *pcmp = runtime->private_data;
+
+ if (!wait_event_timeout(pcmp->sleep, (atomic_read(&pcmp->dma_count) <= 0), 2*HZ))
+ snd_printk(KERN_ERR "gf1 pcm - serious DMA problem\n");
+
+ snd_gf1_dma_done(gus);
+ return 0;
+}
+
+static int snd_gf1_pcm_capture_open(struct snd_pcm_substream *substream)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+
+ gus->gf1.interrupt_handler_dma_read = snd_gf1_pcm_interrupt_dma_read;
+ gus->pcm_cap_substream = substream;
+ substream->runtime->hw = snd_gf1_pcm_capture;
+ snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.buffer_bytes_max);
+ snd_pcm_limit_isa_dma_size(gus->gf1.dma2, &runtime->hw.period_bytes_max);
+ snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
+ &hw_constraints_clocks);
+ return 0;
+}
+
+static int snd_gf1_pcm_capture_close(struct snd_pcm_substream *substream)
+{
+ struct snd_gus_card *gus = snd_pcm_substream_chip(substream);
+
+ gus->pcm_cap_substream = NULL;
+ snd_gf1_set_default_handlers(gus, SNDRV_GF1_HANDLER_DMA_READ);
+ return 0;
+}
+
+static int snd_gf1_pcm_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
+{
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->count = 2;
+ uinfo->value.integer.min = 0;
+ uinfo->value.integer.max = 127;
+ return 0;
+}
+
+static int snd_gf1_pcm_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
+ unsigned long flags;
+
+ spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
+ ucontrol->value.integer.value[0] = gus->gf1.pcm_volume_level_left1;
+ ucontrol->value.integer.value[1] = gus->gf1.pcm_volume_level_right1;
+ spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
+ return 0;
+}
+
+static int snd_gf1_pcm_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_gus_card *gus = snd_kcontrol_chip(kcontrol);
+ unsigned long flags;
+ int change;
+ unsigned int idx;
+ unsigned short val1, val2, vol;
+ struct gus_pcm_private *pcmp;
+ struct snd_gus_voice *pvoice;
+
+ val1 = ucontrol->value.integer.value[0] & 127;
+ val2 = ucontrol->value.integer.value[1] & 127;
+ spin_lock_irqsave(&gus->pcm_volume_level_lock, flags);
+ change = val1 != gus->gf1.pcm_volume_level_left1 ||
+ val2 != gus->gf1.pcm_volume_level_right1;
+ gus->gf1.pcm_volume_level_left1 = val1;
+ gus->gf1.pcm_volume_level_right1 = val2;
+ gus->gf1.pcm_volume_level_left = snd_gf1_lvol_to_gvol_raw(val1 << 9) << 4;
+ gus->gf1.pcm_volume_level_right = snd_gf1_lvol_to_gvol_raw(val2 << 9) << 4;
+ spin_unlock_irqrestore(&gus->pcm_volume_level_lock, flags);
+ /* are we active? */
+ spin_lock_irqsave(&gus->voice_alloc, flags);
+ for (idx = 0; idx < 32; idx++) {
+ pvoice = &gus->gf1.voices[idx];
+ if (!pvoice->pcm)
+ continue;
+ pcmp = pvoice->private_data;
+ if (!(pcmp->flags & SNDRV_GF1_PCM_PFLG_ACTIVE))
+ continue;
+ /* load real volume - better precision */
+ spin_lock(&gus->reg_lock);
+ snd_gf1_select_voice(gus, pvoice->number);
+ snd_gf1_ctrl_stop(gus, SNDRV_GF1_VB_VOLUME_CONTROL);
+ vol = pvoice == pcmp->pvoices[0] ? gus->gf1.pcm_volume_level_left : gus->gf1.pcm_volume_level_right;
+ snd_gf1_write16(gus, SNDRV_GF1_VW_VOLUME, vol);
+ pcmp->final_volume = 1;
+ spin_unlock(&gus->reg_lock);
+ }
+ spin_unlock_irqrestore(&gus->voice_alloc, flags);
+ return change;
+}
+
+static struct snd_kcontrol_new snd_gf1_pcm_volume_control =
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "PCM Playback Volume",
+ .info = snd_gf1_pcm_volume_info,
+ .get = snd_gf1_pcm_volume_get,
+ .put = snd_gf1_pcm_volume_put
+};
+
+static struct snd_kcontrol_new snd_gf1_pcm_volume_control1 =
+{
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "GPCM Playback Volume",
+ .info = snd_gf1_pcm_volume_info,
+ .get = snd_gf1_pcm_volume_get,
+ .put = snd_gf1_pcm_volume_put
+};
+
+static struct snd_pcm_ops snd_gf1_pcm_playback_ops = {
+ .open = snd_gf1_pcm_playback_open,
+ .close = snd_gf1_pcm_playback_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_gf1_pcm_playback_hw_params,
+ .hw_free = snd_gf1_pcm_playback_hw_free,
+ .prepare = snd_gf1_pcm_playback_prepare,
+ .trigger = snd_gf1_pcm_playback_trigger,
+ .pointer = snd_gf1_pcm_playback_pointer,
+ .copy = snd_gf1_pcm_playback_copy,
+ .silence = snd_gf1_pcm_playback_silence,
+};
+
+static struct snd_pcm_ops snd_gf1_pcm_capture_ops = {
+ .open = snd_gf1_pcm_capture_open,
+ .close = snd_gf1_pcm_capture_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = snd_gf1_pcm_capture_hw_params,
+ .hw_free = snd_gf1_pcm_capture_hw_free,
+ .prepare = snd_gf1_pcm_capture_prepare,
+ .trigger = snd_gf1_pcm_capture_trigger,
+ .pointer = snd_gf1_pcm_capture_pointer,
+};
+
+int snd_gf1_pcm_new(struct snd_gus_card *gus, int pcm_dev, int control_index)
+{
+ struct snd_card *card;
+ struct snd_kcontrol *kctl;
+ struct snd_pcm *pcm;
+ struct snd_pcm_substream *substream;
+ int capture, err;
+
+ card = gus->card;
+ capture = !gus->interwave && !gus->ess_flag && !gus->ace_flag ? 1 : 0;
+ err = snd_pcm_new(card,
+ gus->interwave ? "AMD InterWave" : "GF1",
+ pcm_dev,
+ gus->gf1.pcm_channels / 2,
+ capture,
+ &pcm);
+ if (err < 0)
+ return err;
+ pcm->private_data = gus;
+ /* playback setup */
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_gf1_pcm_playback_ops);
+
+ for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next)
+ snd_pcm_lib_preallocate_pages(substream, SNDRV_DMA_TYPE_DEV,
+ snd_dma_isa_data(),
+ 64*1024, gus->gf1.dma1 > 3 ? 128*1024 : 64*1024);
+
+ pcm->info_flags = 0;
+ pcm->dev_subclass = SNDRV_PCM_SUBCLASS_GENERIC_MIX;
+ if (capture) {
+ snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_gf1_pcm_capture_ops);
+ if (gus->gf1.dma2 == gus->gf1.dma1)
+ pcm->info_flags |= SNDRV_PCM_INFO_HALF_DUPLEX;
+ snd_pcm_lib_preallocate_pages(pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream,
+ SNDRV_DMA_TYPE_DEV, snd_dma_isa_data(),
+ 64*1024, gus->gf1.dma2 > 3 ? 128*1024 : 64*1024);
+ }
+ strcpy(pcm->name, pcm->id);
+ if (gus->interwave) {
+ sprintf(pcm->name + strlen(pcm->name), " rev %c", gus->revision + 'A');
+ }
+ strcat(pcm->name, " (synth)");
+ gus->pcm = pcm;
+
+ if (gus->codec_flag)
+ kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control1, gus);
+ else
+ kctl = snd_ctl_new1(&snd_gf1_pcm_volume_control, gus);
+ if ((err = snd_ctl_add(card, kctl)) < 0)
+ return err;
+ kctl->id.index = control_index;
+
+ return 0;
+}
+
Code Review / kvmfornfv.git / blobdiff