Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 704 insertions, 0 deletions

diff --git a/sound/isa/sb/emu8000_pcm.c b/sound/isa/sb/emu8000_pcm.c
new file mode 100644
index 000000000000..db5eb8b55058
--- /dev/null
+++ b/sound/isa/sb/emu8000_pcm.c
@@ -0,0 +1,704 @@
+/*
+ * pcm emulation on emu8000 wavetable
+ *
+ *  Copyright (C) 2002 Takashi Iwai <tiwai@suse.de>
+ *
+ *   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 "emu8000_local.h"
+#include <linux/init.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+
+/*
+ * define the following if you want to use this pcm with non-interleaved mode
+ */
+/* #define USE_NONINTERLEAVE */
+
+/* NOTE: for using the non-interleaved mode with alsa-lib, you have to set
+ * mmap_emulation flag to 1 in your .asoundrc, such like
+ *
+ *      pcm.emu8k {
+ *              type plug
+ *              slave.pcm {
+ *                      type hw
+ *                      card 0
+ *                      device 1
+ *                      mmap_emulation 1
+ *              }
+ *      }
+ *
+ * besides, for the time being, the non-interleaved mode doesn't work well on
+ * alsa-lib...
+ */
+
+
+typedef struct snd_emu8k_pcm emu8k_pcm_t;
+
+struct snd_emu8k_pcm {
+        emu8000_t *emu;
+        snd_pcm_substream_t *substream;
+
+        unsigned int allocated_bytes;
+        snd_util_memblk_t *block;
+        unsigned int offset;
+        unsigned int buf_size;
+        unsigned int period_size;
+        unsigned int loop_start[2];
+        unsigned int pitch;
+        int panning[2];
+        int last_ptr;
+        int period_pos;
+        int voices;
+        unsigned int dram_opened: 1;
+        unsigned int running: 1;
+        unsigned int timer_running: 1;
+        struct timer_list timer;
+        spinlock_t timer_lock;
+};
+
+#define LOOP_BLANK_SIZE         8
+
+
+/*
+ * open up channels for the simultaneous data transfer and playback
+ */
+static int
+emu8k_open_dram_for_pcm(emu8000_t *emu, int channels)
+{
+        int i;
+
+        /* reserve up to 2 voices for playback */
+        snd_emux_lock_voice(emu->emu, 0);
+        if (channels > 1)
+                snd_emux_lock_voice(emu->emu, 1);
+
+        /* reserve 28 voices for loading */
+        for (i = channels + 1; i < EMU8000_DRAM_VOICES; i++) {
+                unsigned int mode = EMU8000_RAM_WRITE;
+                snd_emux_lock_voice(emu->emu, i);
+#ifndef USE_NONINTERLEAVE
+                if (channels > 1 && (i & 1) != 0)
+                        mode |= EMU8000_RAM_RIGHT;
+#endif
+                snd_emu8000_dma_chan(emu, i, mode);
+        }
+
+        /* assign voice 31 and 32 to ROM */
+        EMU8000_VTFT_WRITE(emu, 30, 0);
+        EMU8000_PSST_WRITE(emu, 30, 0x1d8);
+        EMU8000_CSL_WRITE(emu, 30, 0x1e0);
+        EMU8000_CCCA_WRITE(emu, 30, 0x1d8);
+        EMU8000_VTFT_WRITE(emu, 31, 0);
+        EMU8000_PSST_WRITE(emu, 31, 0x1d8);
+        EMU8000_CSL_WRITE(emu, 31, 0x1e0);
+        EMU8000_CCCA_WRITE(emu, 31, 0x1d8);
+
+        return 0;
+}
+
+/*
+ */
+static void
+snd_emu8000_write_wait(emu8000_t *emu, int can_schedule)
+{
+        while ((EMU8000_SMALW_READ(emu) & 0x80000000) != 0) {
+                if (can_schedule) {
+                        set_current_state(TASK_INTERRUPTIBLE);
+                        schedule_timeout(1);
+                        if (signal_pending(current))
+                                break;
+                }
+        }
+}
+
+/*
+ * close all channels
+ */
+static void
+emu8k_close_dram(emu8000_t *emu)
+{
+        int i;
+
+        for (i = 0; i < 2; i++)
+                snd_emux_unlock_voice(emu->emu, i);
+        for (; i < EMU8000_DRAM_VOICES; i++) {
+                snd_emu8000_dma_chan(emu, i, EMU8000_RAM_CLOSE);
+                snd_emux_unlock_voice(emu->emu, i);
+        }
+}
+
+/*
+ * convert Hz to AWE32 rate offset (see emux/soundfont.c)
+ */
+
+#define OFFSET_SAMPLERATE       1011119         /* base = 44100 */
+#define SAMPLERATE_RATIO        4096
+
+static int calc_rate_offset(int hz)
+{
+        return snd_sf_linear_to_log(hz, OFFSET_SAMPLERATE, SAMPLERATE_RATIO);
+}
+
+
+/*
+ */
+
+static snd_pcm_hardware_t emu8k_pcm_hw = {
+#ifdef USE_NONINTERLEAVE
+        .info =                 SNDRV_PCM_INFO_NONINTERLEAVED,
+#else
+        .info =                 SNDRV_PCM_INFO_INTERLEAVED,
+#endif
+        .formats =              SNDRV_PCM_FMTBIT_S16_LE,
+        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
+        .rate_min =             4000,
+        .rate_max =             48000,
+        .channels_min =         1,
+        .channels_max =         2,
+        .buffer_bytes_max =     (128*1024),
+        .period_bytes_min =     1024,
+        .period_bytes_max =     (128*1024),
+        .periods_min =          2,
+        .periods_max =          1024,
+        .fifo_size =            0,
+
+};
+
+/*
+ * get the current position at the given channel from CCCA register
+ */
+static inline int emu8k_get_curpos(emu8k_pcm_t *rec, int ch)
+{
+        int val = EMU8000_CCCA_READ(rec->emu, ch) & 0xfffffff;
+        val -= rec->loop_start[ch] - 1;
+        return val;
+}
+
+
+/*
+ * timer interrupt handler
+ * check the current position and update the period if necessary.
+ */
+static void emu8k_pcm_timer_func(unsigned long data)
+{
+        emu8k_pcm_t *rec = (emu8k_pcm_t *)data;
+        int ptr, delta;
+
+        spin_lock(&rec->timer_lock);
+        /* update the current pointer */
+        ptr = emu8k_get_curpos(rec, 0);
+        if (ptr < rec->last_ptr)
+                delta = ptr + rec->buf_size - rec->last_ptr;
+        else
+                delta = ptr - rec->last_ptr;
+        rec->period_pos += delta;
+        rec->last_ptr = ptr;
+
+        /* reprogram timer */
+        rec->timer.expires = jiffies + 1;
+        add_timer(&rec->timer);
+
+        /* update period */
+        if (rec->period_pos >= (int)rec->period_size) {
+                rec->period_pos %= rec->period_size;
+                spin_unlock(&rec->timer_lock);
+                snd_pcm_period_elapsed(rec->substream);
+                return;
+        }
+        spin_unlock(&rec->timer_lock);
+}
+
+
+/*
+ * open pcm
+ * creating an instance here
+ */
+static int emu8k_pcm_open(snd_pcm_substream_t *subs)
+{
+        emu8000_t *emu = snd_pcm_substream_chip(subs);
+        emu8k_pcm_t *rec;
+        snd_pcm_runtime_t *runtime = subs->runtime;
+
+        rec = kcalloc(1, sizeof(*rec), GFP_KERNEL);
+        if (! rec)
+                return -ENOMEM;
+
+        rec->emu = emu;
+        rec->substream = subs;
+        runtime->private_data = rec;
+
+        spin_lock_init(&rec->timer_lock);
+        init_timer(&rec->timer);
+        rec->timer.function = emu8k_pcm_timer_func;
+        rec->timer.data = (unsigned long)rec;
+
+        runtime->hw = emu8k_pcm_hw;
+        runtime->hw.buffer_bytes_max = emu->mem_size - LOOP_BLANK_SIZE * 3;
+        runtime->hw.period_bytes_max = runtime->hw.buffer_bytes_max / 2;
+
+        /* use timer to update periods.. (specified in msec) */
+        snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
+                                     (1000000 + HZ - 1) / HZ, UINT_MAX);
+
+        return 0;
+}
+
+static int emu8k_pcm_close(snd_pcm_substream_t *subs)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        kfree(rec);
+        subs->runtime->private_data = NULL;
+        return 0;
+}
+
+/*
+ * calculate pitch target
+ */
+static int calc_pitch_target(int pitch)
+{
+        int ptarget = 1 << (pitch >> 12);
+        if (pitch & 0x800) ptarget += (ptarget * 0x102e) / 0x2710;
+        if (pitch & 0x400) ptarget += (ptarget * 0x764) / 0x2710;
+        if (pitch & 0x200) ptarget += (ptarget * 0x389) / 0x2710;
+        ptarget += (ptarget >> 1);
+        if (ptarget > 0xffff) ptarget = 0xffff;
+        return ptarget;
+}
+
+/*
+ * set up the voice
+ */
+static void setup_voice(emu8k_pcm_t *rec, int ch)
+{
+        emu8000_t *hw = rec->emu;
+        unsigned int temp;
+
+        /* channel to be silent and idle */
+        EMU8000_DCYSUSV_WRITE(hw, ch, 0x0080);
+        EMU8000_VTFT_WRITE(hw, ch, 0x0000FFFF);
+        EMU8000_CVCF_WRITE(hw, ch, 0x0000FFFF);
+        EMU8000_PTRX_WRITE(hw, ch, 0);
+        EMU8000_CPF_WRITE(hw, ch, 0);
+
+        /* pitch offset */
+        EMU8000_IP_WRITE(hw, ch, rec->pitch);
+        /* set envelope parameters */
+        EMU8000_ENVVAL_WRITE(hw, ch, 0x8000);
+        EMU8000_ATKHLD_WRITE(hw, ch, 0x7f7f);
+        EMU8000_DCYSUS_WRITE(hw, ch, 0x7f7f);
+        EMU8000_ENVVOL_WRITE(hw, ch, 0x8000);
+        EMU8000_ATKHLDV_WRITE(hw, ch, 0x7f7f);
+        /* decay/sustain parameter for volume envelope is used
+           for triggerg the voice */
+        /* modulation envelope heights */
+        EMU8000_PEFE_WRITE(hw, ch, 0x0);
+        /* lfo1/2 delay */
+        EMU8000_LFO1VAL_WRITE(hw, ch, 0x8000);
+        EMU8000_LFO2VAL_WRITE(hw, ch, 0x8000);
+        /* lfo1 pitch & cutoff shift */
+        EMU8000_FMMOD_WRITE(hw, ch, 0);
+        /* lfo1 volume & freq */
+        EMU8000_TREMFRQ_WRITE(hw, ch, 0);
+        /* lfo2 pitch & freq */
+        EMU8000_FM2FRQ2_WRITE(hw, ch, 0);
+        /* pan & loop start */
+        temp = rec->panning[ch];
+        temp = (temp <<24) | ((unsigned int)rec->loop_start[ch] - 1);
+        EMU8000_PSST_WRITE(hw, ch, temp);
+        /* chorus & loop end (chorus 8bit, MSB) */
+        temp = 0; // chorus
+        temp = (temp << 24) | ((unsigned int)rec->loop_start[ch] + rec->buf_size - 1);
+        EMU8000_CSL_WRITE(hw, ch, temp);
+        /* Q & current address (Q 4bit value, MSB) */
+        temp = 0; // filterQ
+        temp = (temp << 28) | ((unsigned int)rec->loop_start[ch] - 1);
+        EMU8000_CCCA_WRITE(hw, ch, temp);
+        /* clear unknown registers */
+        EMU8000_00A0_WRITE(hw, ch, 0);
+        EMU8000_0080_WRITE(hw, ch, 0);
+}
+
+/*
+ * trigger the voice
+ */
+static void start_voice(emu8k_pcm_t *rec, int ch)
+{
+        unsigned long flags;
+        emu8000_t *hw = rec->emu;
+        unsigned int temp, aux;
+        int pt = calc_pitch_target(rec->pitch);
+
+        /* cutoff and volume */
+        EMU8000_IFATN_WRITE(hw, ch, 0xff00);
+        EMU8000_VTFT_WRITE(hw, ch, 0xffff);
+        EMU8000_CVCF_WRITE(hw, ch, 0xffff);
+        /* trigger envelope */
+        EMU8000_DCYSUSV_WRITE(hw, ch, 0x7f7f);
+        /* set reverb and pitch target */
+        temp = 0; // reverb
+        if (rec->panning[ch] == 0)
+                aux = 0xff;
+        else
+                aux = (-rec->panning[ch]) & 0xff;
+        temp = (temp << 8) | (pt << 16) | aux;
+        EMU8000_PTRX_WRITE(hw, ch, temp);
+        EMU8000_CPF_WRITE(hw, ch, pt << 16);
+
+        /* start timer */
+        spin_lock_irqsave(&rec->timer_lock, flags);
+        if (! rec->timer_running) {
+                rec->timer.expires = jiffies + 1;
+                add_timer(&rec->timer);
+                rec->timer_running = 1;
+        }
+        spin_unlock_irqrestore(&rec->timer_lock, flags);
+}
+
+/*
+ * stop the voice immediately
+ */
+static void stop_voice(emu8k_pcm_t *rec, int ch)
+{
+        unsigned long flags;
+        emu8000_t *hw = rec->emu;
+
+        EMU8000_DCYSUSV_WRITE(hw, ch, 0x807F);
+
+        /* stop timer */
+        spin_lock_irqsave(&rec->timer_lock, flags);
+        if (rec->timer_running) {
+                del_timer(&rec->timer);
+                rec->timer_running = 0;
+        }
+        spin_unlock_irqrestore(&rec->timer_lock, flags);
+}
+
+static int emu8k_pcm_trigger(snd_pcm_substream_t *subs, int cmd)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        int ch;
+
+        switch (cmd) {
+        case SNDRV_PCM_TRIGGER_START:
+                for (ch = 0; ch < rec->voices; ch++)
+                        start_voice(rec, ch);
+                rec->running = 1;
+                break;
+        case SNDRV_PCM_TRIGGER_STOP:
+                rec->running = 0;
+                for (ch = 0; ch < rec->voices; ch++)
+                        stop_voice(rec, ch);
+                break;
+        default:
+                return -EINVAL;
+        }
+        return 0;
+}
+
+
+/*
+ * copy / silence ops
+ */
+
+/*
+ * this macro should be inserted in the copy/silence loops
+ * to reduce the latency.  without this, the system will hang up
+ * during the whole loop.
+ */
+#define CHECK_SCHEDULER() \
+do { \
+        cond_resched();\
+        if (signal_pending(current))\
+                return -EAGAIN;\
+} while (0)
+
+
+#ifdef USE_NONINTERLEAVE
+/* copy one channel block */
+static int emu8k_transfer_block(emu8000_t *emu, int offset, unsigned short *buf, int count)
+{
+        EMU8000_SMALW_WRITE(emu, offset);
+        while (count > 0) {
+                unsigned short sval;
+                CHECK_SCHEDULER();
+                get_user(sval, buf);
+                EMU8000_SMLD_WRITE(emu, sval);
+                buf++;
+                count--;
+        }
+        return 0;
+}
+
+static int emu8k_pcm_copy(snd_pcm_substream_t *subs,
+                          int voice,
+                          snd_pcm_uframes_t pos,
+                          void *src,
+                          snd_pcm_uframes_t count)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        emu8000_t *emu = rec->emu;
+
+        snd_emu8000_write_wait(emu, 1);
+        if (voice == -1) {
+                unsigned short *buf = src;
+                int i, err;
+                count /= rec->voices;
+                for (i = 0; i < rec->voices; i++) {
+                        err = emu8k_transfer_block(emu, pos + rec->loop_start[i], buf, count);
+                        if (err < 0)
+                                return err;
+                        buf += count;
+                }
+                return 0;
+        } else {
+                return emu8k_transfer_block(emu, pos + rec->loop_start[voice], src, count);
+        }
+}
+
+/* make a channel block silence */
+static int emu8k_silence_block(emu8000_t *emu, int offset, int count)
+{
+        EMU8000_SMALW_WRITE(emu, offset);
+        while (count > 0) {
+                CHECK_SCHEDULER();
+                EMU8000_SMLD_WRITE(emu, 0);
+                count--;
+        }
+        return 0;
+}
+
+static int emu8k_pcm_silence(snd_pcm_substream_t *subs,
+                             int voice,
+                             snd_pcm_uframes_t pos,
+                             snd_pcm_uframes_t count)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        emu8000_t *emu = rec->emu;
+
+        snd_emu8000_write_wait(emu, 1);
+        if (voice == -1 && rec->voices == 1)
+                voice = 0;
+        if (voice == -1) {
+                int err;
+                err = emu8k_silence_block(emu, pos + rec->loop_start[0], count / 2);
+                if (err < 0)
+                        return err;
+                return emu8k_silence_block(emu, pos + rec->loop_start[1], count / 2);
+        } else {
+                return emu8k_silence_block(emu, pos + rec->loop_start[voice], count);
+        }
+}
+
+#else /* interleave */
+
+/*
+ * copy the interleaved data can be done easily by using
+ * DMA "left" and "right" channels on emu8k engine.
+ */
+static int emu8k_pcm_copy(snd_pcm_substream_t *subs,
+                          int voice,
+                          snd_pcm_uframes_t pos,
+                          void __user *src,
+                          snd_pcm_uframes_t count)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        emu8000_t *emu = rec->emu;
+        unsigned short __user *buf = src;
+
+        snd_emu8000_write_wait(emu, 1);
+        EMU8000_SMALW_WRITE(emu, pos + rec->loop_start[0]);
+        if (rec->voices > 1)
+                EMU8000_SMARW_WRITE(emu, pos + rec->loop_start[1]);
+
+        while (count-- > 0) {
+                unsigned short sval;
+                CHECK_SCHEDULER();
+                get_user(sval, buf);
+                EMU8000_SMLD_WRITE(emu, sval);
+                buf++;
+                if (rec->voices > 1) {
+                        CHECK_SCHEDULER();
+                        get_user(sval, buf);
+                        EMU8000_SMRD_WRITE(emu, sval);
+                        buf++;
+                }
+        }
+        return 0;
+}
+
+static int emu8k_pcm_silence(snd_pcm_substream_t *subs,
+                             int voice,
+                             snd_pcm_uframes_t pos,
+                             snd_pcm_uframes_t count)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        emu8000_t *emu = rec->emu;
+
+        snd_emu8000_write_wait(emu, 1);
+        EMU8000_SMALW_WRITE(emu, rec->loop_start[0] + pos);
+        if (rec->voices > 1)
+                EMU8000_SMARW_WRITE(emu, rec->loop_start[1] + pos);
+        while (count-- > 0) {
+                CHECK_SCHEDULER();
+                EMU8000_SMLD_WRITE(emu, 0);
+                if (rec->voices > 1) {
+                        CHECK_SCHEDULER();
+                        EMU8000_SMRD_WRITE(emu, 0);
+                }
+        }
+        return 0;
+}
+#endif
+
+
+/*
+ * allocate a memory block
+ */
+static int emu8k_pcm_hw_params(snd_pcm_substream_t *subs,
+                               snd_pcm_hw_params_t *hw_params)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+
+        if (rec->block) {
+                /* reallocation - release the old block */
+                snd_util_mem_free(rec->emu->memhdr, rec->block);
+                rec->block = NULL;
+        }
+
+        rec->allocated_bytes = params_buffer_bytes(hw_params) + LOOP_BLANK_SIZE * 4;
+        rec->block = snd_util_mem_alloc(rec->emu->memhdr, rec->allocated_bytes);
+        if (! rec->block)
+                return -ENOMEM;
+        rec->offset = EMU8000_DRAM_OFFSET + (rec->block->offset >> 1); /* in word */
+        /* at least dma_bytes must be set for non-interleaved mode */
+        subs->dma_buffer.bytes = params_buffer_bytes(hw_params);
+
+        return 0;
+}
+
+/*
+ * free the memory block
+ */
+static int emu8k_pcm_hw_free(snd_pcm_substream_t *subs)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+
+        if (rec->block) {
+                int ch;
+                for (ch = 0; ch < rec->voices; ch++)
+                        stop_voice(rec, ch); // to be sure
+                if (rec->dram_opened)
+                        emu8k_close_dram(rec->emu);
+                snd_util_mem_free(rec->emu->memhdr, rec->block);
+                rec->block = NULL;
+        }
+        return 0;
+}
+
+/*
+ */
+static int emu8k_pcm_prepare(snd_pcm_substream_t *subs)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+
+        rec->pitch = 0xe000 + calc_rate_offset(subs->runtime->rate);
+        rec->last_ptr = 0;
+        rec->period_pos = 0;
+
+        rec->buf_size = subs->runtime->buffer_size;
+        rec->period_size = subs->runtime->period_size;
+        rec->voices = subs->runtime->channels;
+        rec->loop_start[0] = rec->offset + LOOP_BLANK_SIZE;
+        if (rec->voices > 1)
+                rec->loop_start[1] = rec->loop_start[0] + rec->buf_size + LOOP_BLANK_SIZE;
+        if (rec->voices > 1) {
+                rec->panning[0] = 0xff;
+                rec->panning[1] = 0x00;
+        } else
+                rec->panning[0] = 0x80;
+
+        if (! rec->dram_opened) {
+                int err, i, ch;
+
+                snd_emux_terminate_all(rec->emu->emu);
+                if ((err = emu8k_open_dram_for_pcm(rec->emu, rec->voices)) != 0)
+                        return err;
+                rec->dram_opened = 1;
+
+                /* clear loop blanks */
+                snd_emu8000_write_wait(rec->emu, 0);
+                EMU8000_SMALW_WRITE(rec->emu, rec->offset);
+                for (i = 0; i < LOOP_BLANK_SIZE; i++)
+                        EMU8000_SMLD_WRITE(rec->emu, 0);
+                for (ch = 0; ch < rec->voices; ch++) {
+                        EMU8000_SMALW_WRITE(rec->emu, rec->loop_start[ch] + rec->buf_size);
+                        for (i = 0; i < LOOP_BLANK_SIZE; i++)
+                                EMU8000_SMLD_WRITE(rec->emu, 0);
+                }
+        }
+
+        setup_voice(rec, 0);
+        if (rec->voices > 1)
+                setup_voice(rec, 1);
+        return 0;
+}
+
+static snd_pcm_uframes_t emu8k_pcm_pointer(snd_pcm_substream_t *subs)
+{
+        emu8k_pcm_t *rec = subs->runtime->private_data;
+        if (rec->running)
+                return emu8k_get_curpos(rec, 0);
+        return 0;
+}
+
+
+static snd_pcm_ops_t emu8k_pcm_ops = {
+        .open =         emu8k_pcm_open,
+        .close =        emu8k_pcm_close,
+        .ioctl =        snd_pcm_lib_ioctl,
+        .hw_params =    emu8k_pcm_hw_params,
+        .hw_free =      emu8k_pcm_hw_free,
+        .prepare =      emu8k_pcm_prepare,
+        .trigger =      emu8k_pcm_trigger,
+        .pointer =      emu8k_pcm_pointer,
+        .copy =         emu8k_pcm_copy,
+        .silence =      emu8k_pcm_silence,
+};
+
+
+static void snd_emu8000_pcm_free(snd_pcm_t *pcm)
+{
+        emu8000_t *emu = pcm->private_data;
+        emu->pcm = NULL;
+}
+
+int snd_emu8000_pcm_new(snd_card_t *card, emu8000_t *emu, int index)
+{
+        snd_pcm_t *pcm;
+        int err;
+
+        if ((err = snd_pcm_new(card, "Emu8000 PCM", index, 1, 0, &pcm)) < 0)
+                return err;
+        pcm->private_data = emu;
+        pcm->private_free = snd_emu8000_pcm_free;
+        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &emu8k_pcm_ops);
+        emu->pcm = pcm;
+
+        snd_device_register(card, pcm);
+
+        return 0;
+}