patch-2.2.17 linux/drivers/sound/emu10k1/audio.c

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diff -u --recursive --new-file v2.2.16/drivers/sound/emu10k1/audio.c linux/drivers/sound/emu10k1/audio.c
@@ -0,0 +1,1499 @@
+/*
+ **********************************************************************
+ *     audio.c -- /dev/dsp interface for emu10k1 driver
+ *     Copyright 1999, 2000 Creative Labs, Inc.
+ *
+ **********************************************************************
+ *
+ *     Date                 Author          Summary of changes
+ *     ----                 ------          ------------------
+ *     October 20, 1999     Bertrand Lee    base code release
+ *     November 2, 1999	    Alan Cox        cleaned up types/leaks
+ *
+ **********************************************************************
+ *
+ *     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., 675 Mass Ave, Cambridge, MA 02139,
+ *     USA.
+ *
+ **********************************************************************
+ */
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/poll.h>
+#include <linux/malloc.h>
+#include <asm/io.h>
+
+#include "hwaccess.h"
+#include "cardwo.h"
+#include "cardwi.h"
+#include "recmgr.h"
+#include "irqmgr.h"
+#include "audio.h"
+
+static void calculate_ofrag(struct woinst *);
+static void calculate_ifrag(struct wiinst *);
+
+/* Audio file operations */
+static loff_t emu10k1_audio_llseek(struct file *file, loff_t offset, int nOrigin)
+{
+	return -ESPIPE;
+}
+
+static ssize_t emu10k1_audio_read(struct file *file, char *buffer, size_t count, loff_t * ppos)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
+	struct wiinst *wiinst = wave_dev->wiinst;
+	ssize_t ret = 0;
+	unsigned long flags;
+
+	GET_INODE_STRUCT();
+
+	DPD(4, "emu10k1_audio_read(), buffer=%p, count=%d\n", buffer, (u32) count);
+
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+
+	if (!access_ok(VERIFY_WRITE, buffer, count))
+		return -EFAULT;
+
+	spin_lock_irqsave(&wiinst->lock, flags);
+
+	if (wiinst->mmapped) {
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+		return -ENXIO;
+	}
+
+	if (wiinst->state == WAVE_STATE_CLOSED) {
+		calculate_ifrag(wiinst);
+
+		while (emu10k1_wavein_open(wave_dev) < 0) {
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+
+			if (file->f_flags & O_NONBLOCK)
+				return -EAGAIN;
+
+			UP_INODE_SEM(&inode->i_sem);
+			interruptible_sleep_on(&wave_dev->card->open_wait);
+			DOWN_INODE_SEM(&inode->i_sem);
+
+			if (signal_pending(current))
+				return -ERESTARTSYS;
+
+			spin_lock_irqsave(&wiinst->lock, flags);
+		}
+	}
+
+	spin_unlock_irqrestore(&wiinst->lock, flags);
+
+	while (count > 0) {
+		u32 bytestocopy;
+
+		spin_lock_irqsave(&wiinst->lock, flags);
+
+		if (!(wiinst->state & WAVE_STATE_STARTED)
+		    && (wave_dev->enablebits & PCM_ENABLE_INPUT))
+			emu10k1_wavein_start(wave_dev);
+
+		emu10k1_wavein_update(wave_dev->card, wiinst);
+		emu10k1_wavein_getxfersize(wiinst, &bytestocopy);
+
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+
+		DPD(4, "bytestocopy --> %d\n", bytestocopy);
+
+		if ((bytestocopy >= wiinst->buffer.fragment_size)
+		    || (bytestocopy >= count)) {
+			bytestocopy = min(bytestocopy, count);
+
+			emu10k1_wavein_xferdata(wiinst, (u8 *) buffer, &bytestocopy);
+
+			count -= bytestocopy;
+			buffer += bytestocopy;
+			ret += bytestocopy;
+		}
+
+		if (count > 0) {
+			if ((file->f_flags & O_NONBLOCK)
+			    || (!(wave_dev->enablebits & PCM_ENABLE_INPUT)))
+				return (ret ? ret : -EAGAIN);
+
+			UP_INODE_SEM(&inode->i_sem);
+			interruptible_sleep_on(&wiinst->wait_queue);
+			DOWN_INODE_SEM(&inode->i_sem);
+
+			if (signal_pending(current))
+				return (ret ? ret : -ERESTARTSYS);
+
+		}
+	}
+
+	DPD(4, "bytes copied -> %d\n", (u32) ret);
+
+	return ret;
+}
+
+static ssize_t emu10k1_audio_write(struct file *file, const char *buffer, size_t count, loff_t * ppos)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
+	struct woinst *woinst = wave_dev->woinst;
+	ssize_t ret;
+	unsigned long flags;
+
+	GET_INODE_STRUCT();
+
+	DPD(4, "emu10k1_audio_write(), buffer=%p, count=%d\n", buffer, (u32) count);
+
+	if (ppos != &file->f_pos)
+		return -ESPIPE;
+
+	if (!access_ok(VERIFY_READ, buffer, count))
+		return -EFAULT;
+
+	spin_lock_irqsave(&woinst->lock, flags);
+
+	if (woinst->mmapped) {
+		spin_unlock_irqrestore(&woinst->lock, flags);
+		return -ENXIO;
+	}
+
+	if (woinst->state == WAVE_STATE_CLOSED) {
+		calculate_ofrag(woinst);
+
+		while (emu10k1_waveout_open(wave_dev) < 0) {
+			spin_unlock_irqrestore(&woinst->lock, flags);
+
+			if (file->f_flags & O_NONBLOCK)
+				return -EAGAIN;
+
+			UP_INODE_SEM(&inode->i_sem);
+			interruptible_sleep_on(&wave_dev->card->open_wait);
+			DOWN_INODE_SEM(&inode->i_sem);
+
+			if (signal_pending(current))
+				return -ERESTARTSYS;
+
+			spin_lock_irqsave(&woinst->lock, flags);
+		}
+	}
+
+	spin_unlock_irqrestore(&woinst->lock, flags);
+
+	ret = 0;
+	while (count > 0) {
+		u32 bytestocopy;
+
+		spin_lock_irqsave(&woinst->lock, flags);
+		emu10k1_waveout_update(woinst);
+		emu10k1_waveout_getxfersize(woinst, &bytestocopy);
+		spin_unlock_irqrestore(&woinst->lock, flags);
+
+		DPD(4, "bytestocopy --> %d\n", bytestocopy);
+
+		if ((bytestocopy >= woinst->buffer.fragment_size)
+		    || (bytestocopy >= count)) {
+
+			bytestocopy = min(bytestocopy, count);
+
+			emu10k1_waveout_xferdata(woinst, (u8 *) buffer, &bytestocopy);
+
+			count -= bytestocopy;
+			buffer += bytestocopy;
+			ret += bytestocopy;
+
+			spin_lock_irqsave(&woinst->lock, flags);
+			woinst->total_copied += bytestocopy;
+
+			if (!(woinst->state & WAVE_STATE_STARTED)
+			    && (wave_dev->enablebits & PCM_ENABLE_OUTPUT)
+			    && (woinst->total_copied >= woinst->buffer.fragment_size))
+				emu10k1_waveout_start(wave_dev);
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+		}
+
+		if (count > 0) {
+			if ((file->f_flags & O_NONBLOCK)
+			    || (!(wave_dev->enablebits & PCM_ENABLE_OUTPUT)))
+				return (ret ? ret : -EAGAIN);
+
+			UP_INODE_SEM(&inode->i_sem);
+			interruptible_sleep_on(&woinst->wait_queue);
+			DOWN_INODE_SEM(&inode->i_sem);
+
+			if (signal_pending(current))
+				return (ret ? ret : -ERESTARTSYS);
+		}
+	}
+
+	DPD(4, "bytes copied -> %d\n", (u32) ret);
+
+	return ret;
+}
+
+static int emu10k1_audio_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
+	struct woinst *woinst = NULL;
+	struct wiinst *wiinst = NULL;
+	int val = 0;
+	u32 bytestocopy;
+	unsigned long flags;
+
+	DPF(4, "emu10k1_audio_ioctl()\n");
+
+	if (file->f_mode & FMODE_WRITE)
+		woinst = wave_dev->woinst;
+
+	if (file->f_mode & FMODE_READ)
+		wiinst = wave_dev->wiinst;
+
+	switch (cmd) {
+	case OSS_GETVERSION:
+		DPF(2, "OSS_GETVERSION:\n");
+		return put_user(SOUND_VERSION, (int *) arg);
+
+	case SNDCTL_DSP_RESET:
+		DPF(2, "SNDCTL_DSP_RESET:\n");
+		wave_dev->enablebits = PCM_ENABLE_OUTPUT | PCM_ENABLE_INPUT;
+
+		if (file->f_mode & FMODE_WRITE) {
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			if (woinst->state & WAVE_STATE_OPEN) {
+				if (woinst->mmapped) {
+					int i;
+
+					/* Undo marking the pages as reserved */
+					for (i = 0; i < woinst->buffer.pages; i++)
+						set_bit(PG_reserved, &mem_map[MAP_NR(woinst->buffer.addr[i])].flags);
+				}
+
+				emu10k1_waveout_close(wave_dev);
+			}
+
+			woinst->mmapped = 0;
+			woinst->total_copied = 0;
+			woinst->total_played = 0;
+			woinst->blocks = 0;
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+		}
+
+		if (file->f_mode & FMODE_READ) {
+			spin_lock_irqsave(&wiinst->lock, flags);
+
+			if (wiinst->state & WAVE_STATE_OPEN)
+				emu10k1_wavein_close(wave_dev);
+
+			wiinst->mmapped = 0;
+			wiinst->total_recorded = 0;
+			wiinst->blocks = 0;
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+		}
+
+		break;
+
+	case SNDCTL_DSP_SYNC:
+		DPF(2, "SNDCTL_DSP_SYNC:\n");
+
+		if (file->f_mode & FMODE_WRITE) {
+
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			if (woinst->state & WAVE_STATE_OPEN) {
+
+				if (woinst->state & WAVE_STATE_STARTED)
+					while ((woinst->total_played < woinst->total_copied)
+					       && !signal_pending(current)) {
+						spin_unlock_irqrestore(&woinst->lock, flags);
+						interruptible_sleep_on(&woinst->wait_queue);
+						spin_lock_irqsave(&woinst->lock, flags);
+					}
+
+				if (woinst->mmapped) {
+					int i;
+
+					/* Undo marking the pages as reserved */
+					for (i = 0; i < woinst->buffer.pages; i++)
+						set_bit(PG_reserved, &mem_map[MAP_NR(woinst->buffer.addr[i])].flags);
+				}
+
+				emu10k1_waveout_close(wave_dev);
+			}
+
+			woinst->mmapped = 0;
+			woinst->total_copied = 0;
+			woinst->total_played = 0;
+			woinst->blocks = 0;
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+		}
+
+		if (file->f_mode & FMODE_READ) {
+			spin_lock_irqsave(&wiinst->lock, flags);
+
+			if (wiinst->state & WAVE_STATE_OPEN)
+				emu10k1_wavein_close(wave_dev);
+
+			wiinst->mmapped = 0;
+			wiinst->total_recorded = 0;
+			wiinst->blocks = 0;
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+		}
+
+		break;
+
+	case SNDCTL_DSP_SETDUPLEX:
+		DPF(2, "SNDCTL_DSP_SETDUPLEX:\n");
+		break;
+
+	case SNDCTL_DSP_GETCAPS:
+		DPF(2, "SNDCTL_DSP_GETCAPS:\n");
+		return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME | DSP_CAP_TRIGGER | DSP_CAP_MMAP | DSP_CAP_COPROC, (int *) arg);
+
+	case SNDCTL_DSP_SPEED:
+		DPF(2, "SNDCTL_DSP_SPEED:\n");
+
+		get_user_ret(val, (int *) arg, -EFAULT);
+		DPD(2, "val is %d\n", val);
+
+		if (val > 0) {
+			if (file->f_mode & FMODE_READ) {
+				struct wave_format format;
+
+				spin_lock_irqsave(&wiinst->lock, flags);
+
+				format = wiinst->format;
+				format.samplingrate = val;
+
+				if (emu10k1_wavein_setformat(wave_dev, &format) < 0)
+					return -EINVAL;
+
+				val = wiinst->format.samplingrate;
+
+				spin_unlock_irqrestore(&wiinst->lock, flags);
+
+				DPD(2, "set recording sampling rate -> %d\n", val);
+			}
+
+			if (file->f_mode & FMODE_WRITE) {
+				struct wave_format format;
+
+				spin_lock_irqsave(&woinst->lock, flags);
+
+				format = woinst->format;
+				format.samplingrate = val;
+
+				if (emu10k1_waveout_setformat(wave_dev, &format) < 0)
+					return -EINVAL;
+
+				val = woinst->format.samplingrate;
+
+				spin_unlock_irqrestore(&woinst->lock, flags);
+
+				DPD(2, "set playback sampling rate -> %d\n", val);
+			}
+
+			return put_user(val, (int *) arg);
+		} else {
+			if (file->f_mode & FMODE_READ)
+				val = wiinst->format.samplingrate;
+			else if (file->f_mode & FMODE_WRITE)
+				val = woinst->format.samplingrate;
+
+			return put_user(val, (int *) arg);
+		}
+		break;
+
+	case SNDCTL_DSP_STEREO:
+		DPF(2, "SNDCTL_DSP_STEREO:\n");
+
+		get_user_ret(val, (int *) arg, -EFAULT);
+		DPD(2, " val is %d\n", val);
+
+		if (file->f_mode & FMODE_READ) {
+			struct wave_format format;
+
+			spin_lock_irqsave(&wiinst->lock, flags);
+
+			format = wiinst->format;
+			format.channels = val ? 2 : 1;
+
+			if (emu10k1_wavein_setformat(wave_dev, &format) < 0)
+				return -EINVAL;
+
+			val = wiinst->format.channels - 1;
+
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+			DPD(2, "set recording stereo -> %d\n", val);
+		}
+
+		if (file->f_mode & FMODE_WRITE) {
+			struct wave_format format;
+
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			format = woinst->format;
+			format.channels = val ? 2 : 1;
+
+			if (emu10k1_waveout_setformat(wave_dev, &format) < 0)
+				return -EINVAL;
+
+			val = woinst->format.channels - 1;
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+
+			DPD(2, "set playback stereo -> %d\n", val);
+		}
+
+		return put_user(val, (int *) arg);
+
+		break;
+
+	case SNDCTL_DSP_CHANNELS:
+		DPF(2, "SNDCTL_DSP_CHANNELS:\n");
+
+		get_user_ret(val, (int *) arg, -EFAULT);
+		DPD(2, " val is %d\n", val);
+
+		if (val > 0) {
+			if (file->f_mode & FMODE_READ) {
+				struct wave_format format;
+
+				spin_lock_irqsave(&wiinst->lock, flags);
+
+				format = wiinst->format;
+				format.channels = val;
+
+				if (emu10k1_wavein_setformat(wave_dev, &format) < 0)
+					return -EINVAL;
+
+				val = wiinst->format.channels;
+
+				spin_unlock_irqrestore(&wiinst->lock, flags);
+				DPD(2, "set recording number of channels -> %d\n", val);
+			}
+
+			if (file->f_mode & FMODE_WRITE) {
+				struct wave_format format;
+
+				spin_lock_irqsave(&woinst->lock, flags);
+
+				format = woinst->format;
+				format.channels = val;
+
+				if (emu10k1_waveout_setformat(wave_dev, &format) < 0)
+					return -EINVAL;
+
+				val = woinst->format.channels;
+
+				spin_unlock_irqrestore(&woinst->lock, flags);
+				DPD(2, "set playback number of channels -> %d\n", val);
+			}
+
+			return put_user(val, (int *) arg);
+		} else {
+			if (file->f_mode & FMODE_READ)
+				val = wiinst->format.channels;
+			else if (file->f_mode & FMODE_WRITE)
+				val = woinst->format.channels;
+
+			return put_user(val, (int *) arg);
+		}
+		break;
+
+	case SNDCTL_DSP_GETFMTS:
+		DPF(2, "SNDCTL_DSP_GETFMTS:\n");
+
+		if (file->f_mode & FMODE_READ)
+			val = AFMT_S16_LE;
+		else if (file->f_mode & FMODE_WRITE)
+			val = AFMT_S16_LE | AFMT_U8;
+
+		return put_user(val, (int *) arg);
+
+	case SNDCTL_DSP_SETFMT:	/* Same as SNDCTL_DSP_SAMPLESIZE */
+		DPF(2, "SNDCTL_DSP_SETFMT:\n");
+
+		get_user_ret(val, (int *) arg, -EFAULT);
+		DPD(2, " val is %d\n", val);
+
+		if (val != AFMT_QUERY) {
+			if (file->f_mode & FMODE_READ) {
+				struct wave_format format;
+
+				spin_lock_irqsave(&wiinst->lock, flags);
+
+				format = wiinst->format;
+				format.bitsperchannel = val;
+
+				if (emu10k1_wavein_setformat(wave_dev, &format) < 0)
+					return -EINVAL;
+
+				val = wiinst->format.bitsperchannel;
+
+				spin_unlock_irqrestore(&wiinst->lock, flags);
+				DPD(2, "set recording sample size -> %d\n", val);
+			}
+
+			if (file->f_mode & FMODE_WRITE) {
+				struct wave_format format;
+
+				spin_lock_irqsave(&woinst->lock, flags);
+
+				format = woinst->format;
+				format.bitsperchannel = val;
+
+				if (emu10k1_waveout_setformat(wave_dev, &format) < 0)
+					return -EINVAL;
+
+				val = woinst->format.bitsperchannel;
+
+				spin_unlock_irqrestore(&woinst->lock, flags);
+				DPD(2, "set playback sample size -> %d\n", val);
+			}
+
+			return put_user((val == 16) ? AFMT_S16_LE : AFMT_U8, (int *) arg);
+		} else {
+			if (file->f_mode & FMODE_READ)
+				val = wiinst->format.bitsperchannel;
+			else if (file->f_mode & FMODE_WRITE)
+				val = woinst->format.bitsperchannel;
+
+			return put_user((val == 16) ? AFMT_S16_LE : AFMT_U8, (int *) arg);
+		}
+		break;
+
+	case SOUND_PCM_READ_BITS:
+
+		if (file->f_mode & FMODE_READ)
+			val = wiinst->format.bitsperchannel;
+		else if (file->f_mode & FMODE_WRITE)
+			val = woinst->format.bitsperchannel;
+
+		return put_user((val == 16) ? AFMT_S16_LE : AFMT_U8, (int *) arg);
+
+	case SOUND_PCM_READ_RATE:
+
+		if (file->f_mode & FMODE_READ)
+			val = wiinst->format.samplingrate;
+		else if (file->f_mode & FMODE_WRITE)
+			val = woinst->format.samplingrate;
+
+		return put_user(val, (int *) arg);
+
+	case SOUND_PCM_READ_CHANNELS:
+
+		if (file->f_mode & FMODE_READ)
+			val = wiinst->format.channels;
+		else if (file->f_mode & FMODE_WRITE)
+			val = woinst->format.channels;
+
+		return put_user(val, (int *) arg);
+
+	case SOUND_PCM_WRITE_FILTER:
+		DPF(2, "SOUND_PCM_WRITE_FILTER: not implemented\n");
+		break;
+
+	case SOUND_PCM_READ_FILTER:
+		DPF(2, "SOUND_PCM_READ_FILTER: not implemented\n");
+		break;
+
+	case SNDCTL_DSP_SETSYNCRO:
+		DPF(2, "SNDCTL_DSP_SETSYNCRO: not implemented\n");
+		break;
+
+	case SNDCTL_DSP_GETTRIGGER:
+		DPF(2, "SNDCTL_DSP_GETTRIGGER:\n");
+
+		if (file->f_mode & FMODE_WRITE && (wave_dev->enablebits & PCM_ENABLE_OUTPUT))
+			val |= PCM_ENABLE_OUTPUT;
+
+		if (file->f_mode & FMODE_READ && (wave_dev->enablebits & PCM_ENABLE_INPUT))
+			val |= PCM_ENABLE_INPUT;
+
+		return put_user(val, (int *) arg);
+
+	case SNDCTL_DSP_SETTRIGGER:
+		DPF(2, "SNDCTL_DSP_SETTRIGGER:\n");
+
+		get_user_ret(val, (int *) arg, -EFAULT);
+
+		if (file->f_mode & FMODE_WRITE) {
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			if (val & PCM_ENABLE_OUTPUT) {
+				wave_dev->enablebits |= PCM_ENABLE_OUTPUT;
+				if (woinst->state & WAVE_STATE_OPEN)
+					emu10k1_waveout_start(wave_dev);
+			} else {
+				wave_dev->enablebits &= ~PCM_ENABLE_OUTPUT;
+				if (woinst->state & WAVE_STATE_STARTED)
+					emu10k1_waveout_stop(wave_dev);
+			}
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+		}
+
+		if (file->f_mode & FMODE_READ) {
+			spin_lock_irqsave(&wiinst->lock, flags);
+
+			if (val & PCM_ENABLE_INPUT) {
+				wave_dev->enablebits |= PCM_ENABLE_INPUT;
+				if (wiinst->state & WAVE_STATE_OPEN)
+					emu10k1_wavein_start(wave_dev);
+			} else {
+				wave_dev->enablebits &= ~PCM_ENABLE_INPUT;
+				if (wiinst->state & WAVE_STATE_STARTED)
+					emu10k1_wavein_stop(wave_dev);
+			}
+
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+		}
+		break;
+
+	case SNDCTL_DSP_GETOSPACE:
+		{
+			audio_buf_info info;
+
+			DPF(4, "SNDCTL_DSP_GETOSPACE:\n");
+
+			if (!(file->f_mode & FMODE_WRITE))
+				return -EINVAL;
+
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			if (woinst->state & WAVE_STATE_OPEN) {
+				emu10k1_waveout_update(woinst);
+				emu10k1_waveout_getxfersize(woinst, &bytestocopy);
+				info.bytes = bytestocopy;
+			} else {
+				calculate_ofrag(woinst);
+				info.bytes = woinst->buffer.size;
+			}
+			spin_unlock_irqrestore(&woinst->lock, flags);
+
+			info.fragstotal = woinst->buffer.numfrags;
+			info.fragments = info.bytes / woinst->buffer.fragment_size;
+			info.fragsize = woinst->buffer.fragment_size;
+
+			if (copy_to_user((int *) arg, &info, sizeof(info)))
+				return -EFAULT;
+		}
+		break;
+
+	case SNDCTL_DSP_GETISPACE:
+		{
+			audio_buf_info info;
+
+			DPF(4, "SNDCTL_DSP_GETISPACE:\n");
+
+			if (!(file->f_mode & FMODE_READ))
+				return -EINVAL;
+
+			spin_lock_irqsave(&wiinst->lock, flags);
+			if (wiinst->state & WAVE_STATE_OPEN) {
+				emu10k1_wavein_update(wave_dev->card, wiinst);
+				emu10k1_wavein_getxfersize(wiinst, &bytestocopy);
+				info.bytes = bytestocopy;
+			} else {
+				calculate_ifrag(wiinst);
+				info.bytes = 0;
+			}
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+
+			info.fragstotal = wiinst->buffer.numfrags;
+			info.fragments = info.bytes / wiinst->buffer.fragment_size;
+			info.fragsize = wiinst->buffer.fragment_size;
+
+			if (copy_to_user((int *) arg, &info, sizeof(info)))
+				return -EFAULT;
+		}
+		break;
+
+	case SNDCTL_DSP_NONBLOCK:
+		DPF(2, "SNDCTL_DSP_NONBLOCK:\n");
+
+		file->f_flags |= O_NONBLOCK;
+		break;
+
+	case SNDCTL_DSP_GETODELAY:
+		DPF(4, "SNDCTL_DSP_GETODELAY:\n");
+
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+
+		spin_lock_irqsave(&woinst->lock, flags);
+		if (woinst->state & WAVE_STATE_OPEN) {
+			emu10k1_waveout_update(woinst);
+			emu10k1_waveout_getxfersize(woinst, &bytestocopy);
+			val = woinst->buffer.size - bytestocopy;
+		} else
+			val = 0;
+
+		spin_unlock_irqrestore(&woinst->lock, flags);
+
+		return put_user(val, (int *) arg);
+
+	case SNDCTL_DSP_GETIPTR:
+		{
+			count_info cinfo;
+
+			DPF(4, "SNDCTL_DSP_GETIPTR: \n");
+
+			if (!(file->f_mode & FMODE_READ))
+				return -EINVAL;
+
+			spin_lock_irqsave(&wiinst->lock, flags);
+
+			if (wiinst->state & WAVE_STATE_OPEN) {
+				emu10k1_wavein_update(wave_dev->card, wiinst);
+				cinfo.ptr = wiinst->buffer.hw_pos;
+				cinfo.bytes = cinfo.ptr + wiinst->total_recorded - wiinst->total_recorded % wiinst->buffer.size;
+				cinfo.blocks = cinfo.bytes / wiinst->buffer.fragment_size - wiinst->blocks;
+				wiinst->blocks = cinfo.bytes / wiinst->buffer.fragment_size;
+			} else {
+				cinfo.ptr = 0;
+				cinfo.bytes = 0;
+				cinfo.blocks = 0;
+			}
+
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+
+			if (copy_to_user((void *) arg, &cinfo, sizeof(cinfo)))
+				return -EFAULT;
+		}
+		break;
+
+	case SNDCTL_DSP_GETOPTR:
+		{
+			count_info cinfo;
+
+			DPF(4, "SNDCTL_DSP_GETOPTR:\n");
+
+			if (!(file->f_mode & FMODE_WRITE))
+				return -EINVAL;
+
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			if (woinst->state & WAVE_STATE_OPEN) {
+				emu10k1_waveout_update(woinst);
+				cinfo.ptr = woinst->buffer.hw_pos;
+				cinfo.bytes = cinfo.ptr + woinst->total_played - woinst->total_played % woinst->buffer.size;
+				cinfo.blocks = cinfo.bytes / woinst->buffer.fragment_size - woinst->blocks;
+				woinst->blocks = cinfo.bytes / woinst->buffer.fragment_size;
+			} else {
+				cinfo.ptr = 0;
+				cinfo.bytes = 0;
+				cinfo.blocks = 0;
+			}
+			if(woinst->mmapped)
+				woinst->buffer.bytestocopy %= woinst->buffer.fragment_size;
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+
+			if (copy_to_user((void *) arg, &cinfo, sizeof(cinfo)))
+				return -EFAULT;
+		}
+		break;
+
+	case SNDCTL_DSP_GETBLKSIZE:
+		DPF(2, "SNDCTL_DSP_GETBLKSIZE:\n");
+
+		if (file->f_mode & FMODE_WRITE) {
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			calculate_ofrag(woinst);
+			val = woinst->buffer.fragment_size;
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+		}
+
+		if (file->f_mode & FMODE_READ) {
+			spin_lock_irqsave(&wiinst->lock, flags);
+
+			calculate_ifrag(wiinst);
+			val = wiinst->buffer.fragment_size;
+
+			spin_unlock_irqrestore(&wiinst->lock, flags);
+		}
+
+		return put_user(val, (int *) arg);
+
+		break;
+
+	case SNDCTL_DSP_POST:
+		if (file->f_mode & FMODE_WRITE) {
+			spin_lock_irqsave(&woinst->lock, flags);
+
+			if (!(woinst->state & WAVE_STATE_STARTED)
+			    && (wave_dev->enablebits & PCM_ENABLE_OUTPUT)
+			    && (woinst->total_copied > 0))
+				emu10k1_waveout_start(wave_dev);
+
+			spin_unlock_irqrestore(&woinst->lock, flags);
+		}
+
+		break;
+
+	case SNDCTL_DSP_SUBDIVIDE:
+		DPF(2, "SNDCTL_DSP_SUBDIVIDE: not implemented\n");
+		break;
+
+	case SNDCTL_DSP_SETFRAGMENT:
+		DPF(2, "SNDCTL_DSP_SETFRAGMENT:\n");
+
+		get_user_ret(val, (int *) arg, -EFAULT);
+
+		DPD(2, "val is 0x%x\n", val);
+
+		if (val == 0)
+			return -EIO;
+
+		if (file->f_mode & FMODE_WRITE) {
+			if (woinst->state & WAVE_STATE_OPEN)
+				return -EINVAL;	/* too late to change */
+
+			woinst->buffer.ossfragshift = val & 0xffff;
+			woinst->buffer.numfrags = (val >> 16) & 0xffff;
+		}
+
+		if (file->f_mode & FMODE_READ) {
+			if (wiinst->state & WAVE_STATE_OPEN)
+				return -EINVAL;	/* too late to change */
+
+			wiinst->buffer.ossfragshift = val & 0xffff;
+			wiinst->buffer.numfrags = (val >> 16) & 0xffff;
+		}
+
+		break;
+
+	case SNDCTL_COPR_LOAD:
+		{
+			copr_buffer buf;
+			u32 i;
+
+			DPF(2, "SNDCTL_COPR_LOAD:\n");
+
+			if (copy_from_user(&buf, (copr_buffer *) arg, sizeof(buf)))
+				return -EFAULT;
+
+			if ((buf.command != 1) && (buf.command != 2))
+				return -EINVAL;
+
+			if ((buf.offs < 0x100)
+			    || (buf.offs < 0x000)
+			    || (buf.offs + buf.len > 0x800) || (buf.len > 1000))
+				return -EINVAL;
+
+			if (buf.command == 1) {
+				for (i = 0; i < buf.len; i++)
+					((u32 *) buf.data)[i] = sblive_readptr(wave_dev->card, buf.offs + i, 0);
+
+				if (copy_to_user((copr_buffer *) arg, &buf, sizeof(buf)))
+					return -EFAULT;
+			} else {
+				for (i = 0; i < buf.len; i++)
+					sblive_writeptr(wave_dev->card, buf.offs + i, 0, ((u32 *) buf.data)[i]);
+			}
+			break;
+		}
+
+	default:		/* Default is unrecognized command */
+		DPD(2, "default: 0x%x\n", cmd);
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int emu10k1_audio_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
+
+	DPF(2, "emu10k1_audio_mmap()\n");
+
+	if (vma_get_pgoff(vma) != 0)
+		return -ENXIO;
+
+	if (vma->vm_flags & VM_WRITE) {
+		struct woinst *woinst = wave_dev->woinst;
+		u32 size;
+		unsigned long flags;
+		int i;
+
+		spin_lock_irqsave(&woinst->lock, flags);
+
+		if (woinst->state == WAVE_STATE_CLOSED) {
+			calculate_ofrag(woinst);
+
+			if (emu10k1_waveout_open(wave_dev) < 0) {
+				spin_unlock_irqrestore(&woinst->lock, flags);
+				ERROR();
+				return -EINVAL;
+			}
+
+			/* Now mark the pages as reserved, otherwise remap_page_range doesn't do what we want */
+			for (i = 0; i < woinst->buffer.pages; i++)
+				set_bit(PG_reserved, &mem_map[MAP_NR(woinst->buffer.addr[i])].flags);
+		}
+
+		size = vma->vm_end - vma->vm_start;
+
+		if (size > (PAGE_SIZE * woinst->buffer.pages)) {
+			spin_unlock_irqrestore(&woinst->lock, flags);
+			return -EINVAL;
+		}
+
+		for (i = 0; i < woinst->buffer.pages; i++) {
+			if (remap_page_range(vma->vm_start + (i * PAGE_SIZE), virt_to_phys(woinst->buffer.addr[i]), PAGE_SIZE, vma->vm_page_prot)) {
+				spin_unlock_irqrestore(&woinst->lock, flags);
+				return -EAGAIN;
+			}
+		}
+
+		woinst->mmapped = 1;
+
+		spin_unlock_irqrestore(&woinst->lock, flags);
+	}
+
+	if (vma->vm_flags & VM_READ) {
+		struct wiinst *wiinst = wave_dev->wiinst;
+		unsigned long flags;
+
+		spin_lock_irqsave(&wiinst->lock, flags);
+		wiinst->mmapped = 1;
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+	}
+
+	return 0;
+}
+
+static int emu10k1_audio_open(struct inode *inode, struct file *file)
+{
+	int minor = MINOR(inode->i_rdev);
+	struct emu10k1_card *card;
+	struct list_head *entry;
+	struct emu10k1_wavedevice *wave_dev;
+
+	DPF(2, "emu10k1_audio_open()\n");
+
+	/* Check for correct device to open */
+
+	list_for_each(entry, &emu10k1_devs) {
+		card = list_entry(entry, struct emu10k1_card, list);
+
+		if (!((card->audio1_num ^ minor) & ~0xf) || !((card->audio2_num ^ minor) & ~0xf))
+			break;
+	}
+
+	if (entry == &emu10k1_devs)
+		return -ENODEV;
+
+	MOD_INC_USE_COUNT;
+
+	if ((wave_dev = (struct emu10k1_wavedevice *)
+	     kmalloc(sizeof(struct emu10k1_wavedevice), GFP_KERNEL)) == NULL) {
+		ERROR();
+		MOD_DEC_USE_COUNT;
+		return -EINVAL;
+	}
+
+	wave_dev->card = card;
+	wave_dev->wiinst = NULL;
+	wave_dev->woinst = NULL;
+	wave_dev->enablebits = PCM_ENABLE_OUTPUT | PCM_ENABLE_INPUT;	/* Default */
+
+	if (file->f_mode & FMODE_READ) {
+		/* Recording */
+		struct wiinst *wiinst;
+
+		if ((wiinst = (struct wiinst *) kmalloc(sizeof(struct wiinst), GFP_KERNEL)) == NULL) {
+			ERROR();
+			MOD_DEC_USE_COUNT;
+			return -ENODEV;
+		}
+
+		switch (card->wavein->recsrc) {
+		case WAVERECORD_AC97:
+			wiinst->format.samplingrate = 8000;
+			wiinst->format.bitsperchannel = 16;
+			wiinst->format.channels = 1;
+			break;
+		case WAVERECORD_MIC:
+			wiinst->format.samplingrate = 8000;
+			wiinst->format.bitsperchannel = 16;
+			wiinst->format.channels = 1;
+			break;
+		case WAVERECORD_FX:
+			wiinst->format.samplingrate = 48000;
+			wiinst->format.bitsperchannel = 16;
+			wiinst->format.channels = 2;
+			break;
+		default:
+			BUG();
+			break;
+		}
+
+		wiinst->state = WAVE_STATE_CLOSED;
+
+		wiinst->recsrc = card->wavein->recsrc;
+		wiinst->buffer.ossfragshift = 0;
+		wiinst->buffer.fragment_size = 0;
+		wiinst->buffer.numfrags = 0;
+
+		init_waitqueue_head(&wiinst->wait_queue);
+
+		wiinst->mmapped = 0;
+		wiinst->total_recorded = 0;
+		wiinst->blocks = 0;
+		wiinst->lock = SPIN_LOCK_UNLOCKED;
+		tasklet_init(&wiinst->timer.tasklet, emu10k1_wavein_bh, (unsigned long) wave_dev);
+		wave_dev->wiinst = wiinst;
+		emu10k1_wavein_setformat(wave_dev, &wiinst->format);
+	}
+
+	if (file->f_mode & FMODE_WRITE) {
+		struct woinst *woinst;
+
+		if ((woinst = (struct woinst *) kmalloc(sizeof(struct woinst), GFP_KERNEL)) == NULL) {
+			ERROR();
+			MOD_DEC_USE_COUNT;
+			return -ENODEV;
+		}
+
+		if (wave_dev->wiinst != NULL) {
+			woinst->format = wave_dev->wiinst->format;
+		} else {
+			woinst->format.samplingrate = 8000;
+			woinst->format.bitsperchannel = 8;
+			woinst->format.channels = 1;
+		}
+
+		woinst->state = WAVE_STATE_CLOSED;
+
+		woinst->buffer.fragment_size = 0;
+		woinst->buffer.ossfragshift = 0;
+		woinst->buffer.numfrags = 0;
+		woinst->device = (card->audio2_num == minor);
+
+		init_waitqueue_head(&woinst->wait_queue);
+
+		woinst->mmapped = 0;
+		woinst->total_copied = 0;
+		woinst->total_played = 0;
+		woinst->blocks = 0;
+		woinst->lock = SPIN_LOCK_UNLOCKED;
+		tasklet_init(&woinst->timer.tasklet, emu10k1_waveout_bh, (unsigned long) wave_dev);
+		wave_dev->woinst = woinst;
+		emu10k1_waveout_setformat(wave_dev, &woinst->format);
+
+#ifdef PRIVATE_PCM_VOLUME
+		{
+			int i;
+			int j = -1;
+
+			/*
+			 * find out if we've already been in this table
+			 * xmms reopens dsp on every move of slider
+			 * this way we keep the same local pcm for such
+			 * process
+			 */
+			for (i = 0; i < MAX_PCM_CHANNELS; i++) {
+				if (sblive_pcm_volume[i].files == current->files)
+					break;
+				// here we should select last used memeber
+				// improve me in case its not sufficient
+				if (j < 0 && !sblive_pcm_volume[i].opened)
+					j = i;
+			}
+			// current task not found
+			if (i == MAX_PCM_CHANNELS) {
+				// add new entry
+				if (j < 0)
+					printk(KERN_WARNING "emu10k1: too many writters!\n");
+				i = (j >= 0) ? j : 0;
+				DPD(2, "new pcm private %p\n", current->files);
+				sblive_pcm_volume[i].files = current->files;
+				sblive_pcm_volume[i].mixer = pcm_last_mixer;
+				sblive_pcm_volume[i].attn_l = 0;
+				sblive_pcm_volume[i].attn_r = 0;
+				sblive_pcm_volume[i].channel_l = NUM_G;
+				sblive_pcm_volume[i].channel_r = NUM_G;
+			} else
+				DPD(2, "old pcm private %p  0x%x\n", current->files,
+				    sblive_pcm_volume[i].mixer);
+
+			sblive_pcm_volume[i].opened++;
+		}
+#endif
+	}
+
+	file->private_data = (void *) wave_dev;
+
+	return 0;
+}
+
+static int emu10k1_audio_release(struct inode *inode, struct file *file)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
+	struct emu10k1_card *card = wave_dev->card;
+	unsigned long flags;
+
+	DPF(2, "emu10k1_audio_release()\n");
+
+	if (file->f_mode & FMODE_WRITE) {
+		struct woinst *woinst = wave_dev->woinst;
+
+		spin_lock_irqsave(&woinst->lock, flags);
+
+		if (woinst->state & WAVE_STATE_OPEN) {
+			if (woinst->state & WAVE_STATE_STARTED) {
+				if (!(file->f_flags & O_NONBLOCK)) {
+					while (!signal_pending(current)
+					       && (woinst->total_played < woinst->total_copied)) {
+						DPF(4, "Buffer hasn't been totally played, sleep....\n");
+						spin_unlock_irqrestore(&woinst->lock, flags);
+						interruptible_sleep_on(&woinst->wait_queue);
+						spin_lock_irqsave(&woinst->lock, flags);
+					}
+				}
+			}
+
+			if (woinst->mmapped) {
+				int i;
+
+				/* Undo marking the pages as reserved */
+				for (i = 0; i < woinst->buffer.pages; i++)
+					set_bit(PG_reserved, &mem_map[MAP_NR(woinst->buffer.addr[i])].flags);
+			}
+
+			emu10k1_waveout_close(wave_dev);
+		}
+#ifdef PRIVATE_PCM_VOLUME
+		{
+			int i;
+
+			/* mark as closed
+			 * NOTE: structure remains unchanged for next reopen */
+			for (i = 0; i < MAX_PCM_CHANNELS; i++) {
+				if (sblive_pcm_volume[i].files == current->files) {
+					sblive_pcm_volume[i].opened--;
+					break;
+				}
+			}
+		}
+#endif
+		spin_unlock_irqrestore(&woinst->lock, flags);
+		/* wait for the tasklet (bottom-half) to finish */
+		tasklet_unlock_wait(&woinst->timer.tasklet);
+		kfree(wave_dev->woinst);
+	}
+
+	if (file->f_mode & FMODE_READ) {
+		struct wiinst *wiinst = wave_dev->wiinst;
+
+		spin_lock_irqsave(&wiinst->lock, flags);
+
+		if (wiinst->state & WAVE_STATE_OPEN)
+			emu10k1_wavein_close(wave_dev);
+
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+		tasklet_unlock_wait(&wiinst->timer.tasklet);
+		kfree(wave_dev->wiinst);
+	}
+
+	kfree(wave_dev);
+
+	wake_up_interruptible(&card->open_wait);
+	MOD_DEC_USE_COUNT;
+
+	return 0;
+}
+
+static unsigned int emu10k1_audio_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data;
+	struct woinst *woinst = wave_dev->woinst;
+	struct wiinst *wiinst = wave_dev->wiinst;
+	unsigned int mask = 0;
+	u32 bytestocopy;
+	unsigned long flags;
+
+	DPF(4, "emu10k1_audio_poll()\n");
+
+	if (file->f_mode & FMODE_WRITE)
+		poll_wait(file, &woinst->wait_queue, wait);
+
+	if (file->f_mode & FMODE_READ)
+		poll_wait(file, &wiinst->wait_queue, wait);
+
+	if (file->f_mode & FMODE_WRITE) {
+		spin_lock_irqsave(&woinst->lock, flags);
+
+		if (woinst->state & WAVE_STATE_OPEN) {
+			emu10k1_waveout_update(woinst);
+			emu10k1_waveout_getxfersize(woinst, &bytestocopy);
+
+			if (bytestocopy >= woinst->buffer.fragment_size)
+				mask |= POLLOUT | POLLWRNORM;
+		} else
+			mask |= POLLOUT | POLLWRNORM;
+
+		if(woinst->mmapped) {
+			spin_unlock_irqrestore(&woinst->lock, flags);
+			return mask;
+		}
+
+		spin_unlock_irqrestore(&woinst->lock, flags);
+	}
+
+	if (file->f_mode & FMODE_READ) {
+		spin_lock_irqsave(&wiinst->lock, flags);
+
+		if (wiinst->state == WAVE_STATE_CLOSED) {
+			calculate_ifrag(wiinst);
+			if (emu10k1_wavein_open(wave_dev) < 0) {
+				spin_unlock_irqrestore(&wiinst->lock, flags);
+				return (mask |= POLLERR);
+			}
+		}
+
+		if (!(wiinst->state & WAVE_STATE_STARTED)) {
+			wave_dev->enablebits |= PCM_ENABLE_INPUT;
+			emu10k1_wavein_start(wave_dev);
+		}
+		emu10k1_wavein_update(wave_dev->card, wiinst);
+		emu10k1_wavein_getxfersize(wiinst, &bytestocopy);
+
+		if (bytestocopy >= wiinst->buffer.fragment_size)
+			mask |= POLLIN | POLLRDNORM;
+
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+	}
+
+	return mask;
+}
+
+static void calculate_ofrag(struct woinst *woinst)
+{
+	struct waveout_buffer *buffer = &woinst->buffer;
+	u32 fragsize;
+
+	if (buffer->fragment_size)
+		return;
+
+	if (!buffer->ossfragshift) {
+		fragsize = (woinst->format.bytespersec * WAVEOUT_DEFAULTFRAGLEN) / 1000 - 1;
+
+		while (fragsize) {
+			fragsize >>= 1;
+			buffer->ossfragshift++;
+		}
+	}
+
+	if (buffer->ossfragshift < WAVEOUT_MINFRAGSHIFT)
+		buffer->ossfragshift = WAVEOUT_MINFRAGSHIFT;
+
+	buffer->fragment_size = 1 << buffer->ossfragshift;
+
+	if (!buffer->numfrags) {
+		u32 numfrags;
+
+		numfrags = (woinst->format.bytespersec * WAVEOUT_DEFAULTBUFLEN) / (buffer->fragment_size * 1000) - 1;
+
+		buffer->numfrags = 1;
+
+		while (numfrags) {
+			numfrags >>= 1;
+			buffer->numfrags <<= 1;
+		}
+	}
+
+	if (buffer->numfrags < MINFRAGS)
+		buffer->numfrags = MINFRAGS;
+
+	if (buffer->numfrags * buffer->fragment_size > WAVEOUT_MAXBUFSIZE) {
+		buffer->numfrags = WAVEOUT_MAXBUFSIZE / buffer->fragment_size;
+
+		if (buffer->numfrags < MINFRAGS) {
+			buffer->numfrags = MINFRAGS;
+			buffer->fragment_size = WAVEOUT_MAXBUFSIZE / MINFRAGS;
+		}
+
+	} else if (buffer->numfrags * buffer->fragment_size < WAVEOUT_MINBUFSIZE)
+		buffer->numfrags = WAVEOUT_MINBUFSIZE / buffer->fragment_size;
+
+	buffer->size = buffer->fragment_size * buffer->numfrags;
+	buffer->pages = buffer->size / PAGE_SIZE + ((buffer->size % PAGE_SIZE) ? 1 : 0);
+
+	DPD(2, " calculated playback fragment_size -> %d\n", buffer->fragment_size);
+	DPD(2, " calculated playback numfrags -> %d\n", buffer->numfrags);
+
+	return;
+}
+
+static void calculate_ifrag(struct wiinst *wiinst)
+{
+	struct wavein_buffer *buffer = &wiinst->buffer;
+	u32 fragsize, bufsize, size[4];
+	int i, j;
+
+	if (buffer->fragment_size)
+		return;
+
+	if (!buffer->ossfragshift) {
+		fragsize = (wiinst->format.bytespersec * WAVEIN_DEFAULTFRAGLEN) / 1000 - 1;
+
+		while (fragsize) {
+			fragsize >>= 1;
+			buffer->ossfragshift++;
+		}
+	}
+
+	if (buffer->ossfragshift < WAVEIN_MINFRAGSHIFT)
+		buffer->ossfragshift = WAVEIN_MINFRAGSHIFT;
+
+	buffer->fragment_size = 1 << buffer->ossfragshift;
+
+	if (!buffer->numfrags)
+		buffer->numfrags = (wiinst->format.bytespersec * WAVEIN_DEFAULTBUFLEN) / (buffer->fragment_size * 1000) - 1;
+
+	if (buffer->numfrags < MINFRAGS)
+		buffer->numfrags = MINFRAGS;
+
+	if (buffer->numfrags * buffer->fragment_size > WAVEIN_MAXBUFSIZE) {
+		buffer->numfrags = WAVEIN_MAXBUFSIZE / buffer->fragment_size;
+
+		if (buffer->numfrags < MINFRAGS) {
+			buffer->numfrags = MINFRAGS;
+			buffer->fragment_size = WAVEIN_MAXBUFSIZE / MINFRAGS;
+		}
+	} else if (buffer->numfrags * buffer->fragment_size < WAVEIN_MINBUFSIZE)
+		buffer->numfrags = WAVEIN_MINBUFSIZE / buffer->fragment_size;
+
+	bufsize = buffer->fragment_size * buffer->numfrags;
+
+	if (bufsize >= 0x10000) {
+		buffer->size = 0x10000;
+		buffer->sizeregval = 0x1f;
+	} else {
+		buffer->size = 0;
+		size[0] = 384;
+		size[1] = 448;
+		size[2] = 512;
+		size[3] = 640;
+
+		for (i = 0; i < 8; i++)
+			for (j = 0; j < 4; j++)
+				if (bufsize >= size[j]) {
+					buffer->size = size[j];
+					size[j] *= 2;
+					buffer->sizeregval = i * 4 + j + 1;
+				} else
+					goto exitloop;
+	      exitloop:
+		if (buffer->size == 0) {
+			buffer->size = 384;
+			buffer->sizeregval = 0x01;
+		}
+	}
+
+	buffer->numfrags = buffer->size / buffer->fragment_size;
+
+	if (buffer->size % buffer->fragment_size)
+		BUG();
+
+	DPD(2, " calculated recording fragment_size -> %d\n", buffer->fragment_size);
+	DPD(2, " calculated recording numfrags -> %d\n", buffer->numfrags);
+	DPD(2, " buffer size register -> 0x%2x\n", buffer->sizeregval);
+
+	return;
+}
+
+void emu10k1_wavein_bh(unsigned long refdata)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) refdata;
+	struct wiinst *wiinst = wave_dev->wiinst;
+	u32 bytestocopy;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wiinst->lock, flags);
+
+	if (!(wiinst->state & WAVE_STATE_STARTED)) {
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+		return;
+	}
+
+	emu10k1_wavein_update(wave_dev->card, wiinst);
+
+	if (wiinst->mmapped) {
+		spin_unlock_irqrestore(&wiinst->lock, flags);
+		return;
+	}
+
+	emu10k1_wavein_getxfersize(wiinst, &bytestocopy);
+
+	spin_unlock_irqrestore(&wiinst->lock, flags);
+
+	if (bytestocopy >= wiinst->buffer.fragment_size)
+		wake_up_interruptible(&wiinst->wait_queue);
+	else
+		DPD(4, "Not enough transfer size, %d\n", bytestocopy);
+
+	return;
+}
+
+void emu10k1_waveout_bh(unsigned long refdata)
+{
+	struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) refdata;
+	struct woinst *woinst = wave_dev->woinst;
+	u32 bytestocopy;
+	unsigned long flags;
+
+	spin_lock_irqsave(&woinst->lock, flags);
+
+	if (!(woinst->state & WAVE_STATE_STARTED)) {
+		spin_unlock_irqrestore(&woinst->lock, flags);
+		return;
+	}
+
+	emu10k1_waveout_update(woinst);
+	emu10k1_waveout_getxfersize(woinst, &bytestocopy);
+
+	if (woinst->buffer.fill_silence) {
+		spin_unlock_irqrestore(&woinst->lock, flags);
+		emu10k1_waveout_fillsilence(woinst);
+	} else
+		spin_unlock_irqrestore(&woinst->lock, flags);
+
+	if (bytestocopy >= woinst->buffer.fragment_size)
+		wake_up_interruptible(&woinst->wait_queue);
+	else
+		DPD(4, "Not enough transfer size -> %d\n", bytestocopy);
+
+	return;
+}
+
+struct file_operations emu10k1_audio_fops = {
+	llseek:emu10k1_audio_llseek,
+	read:emu10k1_audio_read,
+	write:emu10k1_audio_write,
+	poll:emu10k1_audio_poll,
+	ioctl:emu10k1_audio_ioctl,
+	mmap:emu10k1_audio_mmap,
+	open:emu10k1_audio_open,
+	release:emu10k1_audio_release,
+};

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)