/*
**********************************************************************
* 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/slab.h>
#include <linux/version.h>
#include <linux/bitops.h>
#include <asm/io.h>
#include <linux/sched.h>
#include <linux/smp_lock.h>
#include <linux/wrapper.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 origin)
{
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;
DPD(3, "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;
interruptible_sleep_on(&wave_dev->card->open_wait);
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(3, "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);
interruptible_sleep_on(&wiinst->wait_queue);
if (signal_pending(current))
return (ret ? ret : -ERESTARTSYS);
}
}
DPD(3, "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;
DPD(3, "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;
interruptible_sleep_on(&wave_dev->card->open_wait);
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(3, "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);
interruptible_sleep_on(&woinst->wait_queue);
if (signal_pending(current))
return (ret ? ret : -ERESTARTSYS);
}
}
DPD(3, "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++)
mem_map_unreserve(virt_to_page(woinst->buffer.addr[i]));
}
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++)
mem_map_unreserve(virt_to_page(woinst->buffer.addr[i]));
}
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");
if (get_user(val, (int *) arg))
return -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) {
spin_unlock_irqrestore(&wiinst->lock, flags);
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) {
spin_unlock_irqrestore(&woinst->lock, flags);
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");
if (get_user(val, (int *) arg))
return -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) {
spin_unlock_irqrestore(&wiinst->lock, flags);
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) {
spin_unlock_irqrestore(&woinst->lock, flags);
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");
if (get_user(val, (int *) arg))
return -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) {
spin_unlock_irqrestore(&wiinst->lock, flags);
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) {
spin_unlock_irqrestore(&woinst->lock, flags);
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");
if (get_user(val, (int *) arg))
return -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) {
spin_unlock_irqrestore(&wiinst->lock, flags);
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) {
spin_unlock_irqrestore(&woinst->lock, flags);
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");
if (get_user(val, (int *) arg))
return -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");
if (get_user(val, (int *) arg))
return -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;
int ret = -EFAULT;
DPF(2, "SNDCTL_COPR_LOAD:\n");
buf = kmalloc(sizeof(copr_buffer), GFP_KERNEL);
if(buf == NULL)
return -ENOMEM;
if (copy_from_user(buf, (copr_buffer *) arg, sizeof(buf)))
goto fail;
if ((buf->command != 1) && (buf->command != 2))
{
ret = -EINVAL;
goto fail;
}
if ((buf->offs < 0x100)
|| (buf->offs < 0x000)
|| (buf->offs + buf->len > 0x800) || (buf->len > 1000))
{
ret = -EINVAL;
goto fail;
}
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)))
goto fail;
} else {
for (i = 0; i < buf->len; i++)
sblive_writeptr(wave_dev->card, buf->offs + i, 0, ((u32 *) buf->data)[i]);
}
ret = 0;
fail:
kfree(buf);
return ret;
}
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;
lock_kernel();
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();
unlock_kernel();
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++)
mem_map_reserve(virt_to_page(woinst->buffer.addr[i]));
}
size = vma->vm_end - vma->vm_start;
if (size > (PAGE_SIZE * woinst->buffer.pages)) {
spin_unlock_irqrestore(&woinst->lock, flags);
unlock_kernel();
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);
unlock_kernel();
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);
}
unlock_kernel();
return 0;
}
static int emu10k1_audio_open(struct inode *inode, struct file *file)
{
int minor = MINOR(inode->i_rdev);
struct emu10k1_card *card=NULL;
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->audio_num ^ minor) & ~0xf) || !((card->audio1_num ^ minor) & ~0xf))
break;
}
if (entry == &emu10k1_devs)
return -ENODEV;
if ((wave_dev = (struct emu10k1_wavedevice *)
kmalloc(sizeof(struct emu10k1_wavedevice), GFP_KERNEL)) == NULL) {
ERROR();
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();
return -ENODEV;
}
wiinst->recsrc = card->wavein.recsrc;
wiinst->fxwc = card->wavein.fxwc;
switch (wiinst->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 = hweight32(wiinst->fxwc);
break;
default:
BUG();
break;
}
wiinst->state = WAVE_STATE_CLOSED;
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();
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->audio1_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;
unsigned long flags;
lock_kernel();
card = wave_dev->card;
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++)
mem_map_unreserve(virt_to_page(woinst->buffer.addr[i]));
}
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);
unlock_kernel();
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(3, "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(3, "Not enough transfer size -> %d\n", bytestocopy);
return;
}
struct file_operations emu10k1_audio_fops = {
owner: THIS_MODULE,
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,
};
