diff options
Diffstat (limited to 'sound/oss/emu10k1/audio.c')
| -rw-r--r-- | sound/oss/emu10k1/audio.c | 1588 |
1 files changed, 1588 insertions, 0 deletions
diff --git a/sound/oss/emu10k1/audio.c b/sound/oss/emu10k1/audio.c new file mode 100644 index 00000000000..cde4d59d543 --- /dev/null +++ b/sound/oss/emu10k1/audio.c @@ -0,0 +1,1588 @@ +/* + ********************************************************************** + * 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. + * + ********************************************************************** + */ + +#include <linux/module.h> +#include <linux/poll.h> +#include <linux/slab.h> +#include <linux/bitops.h> +#include <asm/io.h> +#include <linux/sched.h> +#include <linux/smp_lock.h> + +#include "hwaccess.h" +#include "cardwo.h" +#include "cardwi.h" +#include "recmgr.h" +#include "irqmgr.h" +#include "audio.h" +#include "8010.h" + +static void calculate_ofrag(struct woinst *); +static void calculate_ifrag(struct wiinst *); + +static void emu10k1_waveout_bh(unsigned long refdata); +static void emu10k1_wavein_bh(unsigned long refdata); + +/* Audio file operations */ +static ssize_t emu10k1_audio_read(struct file *file, char __user *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 (!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_t(u32, bytestocopy, count); + + emu10k1_wavein_xferdata(wiinst, (u8 __user *)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 __user *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 (!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; + } + // This is for emu10k1 revs less than 7, we need to go through tram + if (woinst->format.passthrough == 1) { + int r; + + woinst->buffer.ossfragshift = PT_BLOCKSIZE_LOG2; + woinst->buffer.numfrags = PT_BLOCKCOUNT; + calculate_ofrag(woinst); + + r = emu10k1_pt_write(file, buffer, count); + spin_unlock_irqrestore(&woinst->lock, flags); + return r; + } + + 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; + if (count % woinst->format.bytespersample) + return -EINVAL; + + count /= woinst->num_voices; + + 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_t(u32, bytestocopy, count); + + emu10k1_waveout_xferdata(woinst, (u8 __user *) buffer, &bytestocopy); + + count -= bytestocopy; + buffer += bytestocopy * woinst->num_voices; + ret += bytestocopy * woinst->num_voices; + + 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; + int __user *p = (int __user *)arg; + + 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, p); + + 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) { + 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); + } + 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| DSP_CAP_MULTI, p); + case SNDCTL_DSP_SPEED: + DPF(2, "SNDCTL_DSP_SPEED:\n"); + + if (get_user(val, p)) + 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, p); + } 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, p); + } + break; + + case SNDCTL_DSP_STEREO: + DPF(2, "SNDCTL_DSP_STEREO:\n"); + + if (get_user(val, p)) + 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, p); + + break; + + case SNDCTL_DSP_CHANNELS: + DPF(2, "SNDCTL_DSP_CHANNELS:\n"); + + if (get_user(val, p)) + 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, p); + } 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, p); + } + 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; + if (emu10k1_find_control_gpr(&wave_dev->card->mgr, + wave_dev->card->pt.patch_name, + wave_dev->card->pt.enable_gpr_name) >= 0) + val |= AFMT_AC3; + } + return put_user(val, p); + + case SNDCTL_DSP_SETFMT: /* Same as SNDCTL_DSP_SAMPLESIZE */ + DPF(2, "SNDCTL_DSP_SETFMT:\n"); + + if (get_user(val, p)) + 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.id = val; + + if (emu10k1_wavein_setformat(wave_dev, &format) < 0) { + spin_unlock_irqrestore(&wiinst->lock, flags); + return -EINVAL; + } + + val = wiinst->format.id; + + spin_unlock_irqrestore(&wiinst->lock, flags); + DPD(2, "set recording format -> %d\n", val); + } + + if (file->f_mode & FMODE_WRITE) { + struct wave_format format; + + spin_lock_irqsave(&woinst->lock, flags); + + format = woinst->format; + format.id = val; + + if (emu10k1_waveout_setformat(wave_dev, &format) < 0) { + spin_unlock_irqrestore(&woinst->lock, flags); + return -EINVAL; + } + + val = woinst->format.id; + + spin_unlock_irqrestore(&woinst->lock, flags); + DPD(2, "set playback format -> %d\n", val); + } + + return put_user(val, p); + } else { + if (file->f_mode & FMODE_READ) + val = wiinst->format.id; + else if (file->f_mode & FMODE_WRITE) + val = woinst->format.id; + + return put_user(val, p); + } + 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, p); + + 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, p); + + 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, p); + + 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, p); + + case SNDCTL_DSP_SETTRIGGER: + DPF(2, "SNDCTL_DSP_SETTRIGGER:\n"); + + if (get_user(val, p)) + 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.bytes *= woinst->num_voices; + info.fragsize = woinst->buffer.fragment_size * woinst->num_voices; + info.fragstotal = woinst->buffer.numfrags * woinst->num_voices; + info.fragments = info.bytes / info.fragsize; + + if (copy_to_user(p, &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(p, &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; + + val *= woinst->num_voices; + spin_unlock_irqrestore(&woinst->lock, flags); + + return put_user(val, p); + + 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; + } + + if (wiinst->mmapped) + wiinst->buffer.bytestocopy %= wiinst->buffer.fragment_size; + + spin_unlock_irqrestore(&wiinst->lock, flags); + + if (copy_to_user(p, &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 || + ((woinst->format.passthrough == 1) && wave_dev->card->pt.state)) { + int num_fragments; + + if (woinst->format.passthrough == 1) { + emu10k1_pt_waveout_update(wave_dev); + cinfo.bytes = woinst->total_played; + } else { + emu10k1_waveout_update(woinst); + cinfo.bytes = woinst->total_played; + } + + cinfo.ptr = woinst->buffer.hw_pos; + num_fragments = cinfo.bytes / woinst->buffer.fragment_size; + cinfo.blocks = num_fragments - woinst->blocks; + woinst->blocks = num_fragments; + + cinfo.bytes *= woinst->num_voices; + cinfo.ptr *= woinst->num_voices; + } else { + cinfo.ptr = 0; + cinfo.bytes = 0; + cinfo.blocks = 0; + } + + if (woinst->mmapped) + woinst->buffer.free_bytes %= woinst->buffer.fragment_size; + + spin_unlock_irqrestore(&woinst->lock, flags); + + if (copy_to_user(p, &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 * woinst->num_voices; + + 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, p); + + 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, p)) + return -EFAULT; + + DPD(2, "val is %#x\n", val); + + if (val == 0) + return -EIO; + + if (file->f_mode & FMODE_WRITE) { + /* digital pass-through fragment count and size are fixed values */ + if (woinst->state & WAVE_STATE_OPEN || (woinst->format.passthrough == 1)) + 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(4, "SNDCTL_COPR_LOAD:\n"); + + buf = kmalloc(sizeof(copr_buffer), GFP_KERNEL); + if (!buf) + return -ENOMEM; + + if (copy_from_user(buf, p, sizeof(copr_buffer))) { + kfree (buf); + return -EFAULT; + } + + if ((buf->command != CMD_READ) && (buf->command != CMD_WRITE)) { + kfree (buf); + return -EINVAL; + } + + if (buf->command == CMD_WRITE) { + +#ifdef DBGEMU + if ((buf->offs < 0) || (buf->offs + buf->len > 0xe00) || (buf->len > 1000)) { +#else + if (((buf->offs < 0x100) || (buf->offs + buf->len > (wave_dev->card->is_audigy ? 0xe00 : 0x800)) || (buf->len > 1000) + ) && !( + //any register allowed raw access to users goes here: + (buf->offs == DBG || + buf->offs == A_DBG) + && (buf->len == 1))) { +#endif + kfree(buf); + return -EINVAL; + } + } else { + if ((buf->offs < 0) || (buf->offs + buf->len > 0xe00) || (buf->len > 1000)) { + kfree(buf); + return -EINVAL; + } + } + + if (((unsigned)buf->flags) > 0x3f) + buf->flags = 0; + + if (buf->command == CMD_READ) { + for (i = 0; i < buf->len; i++) + ((u32 *) buf->data)[i] = sblive_readptr(wave_dev->card, buf->offs + i, buf->flags); + + if (copy_to_user(p, buf, sizeof(copr_buffer))) { + kfree(buf); + return -EFAULT; + } + } else { + for (i = 0; i < buf->len; i++) + sblive_writeptr(wave_dev->card, buf->offs + i, buf->flags, ((u32 *) buf->data)[i]); + } + + kfree (buf); + break; + } + + default: /* Default is unrecognized command */ + DPD(2, "default: %#x\n", cmd); + return -EINVAL; + } + return 0; +} + +static struct page *emu10k1_mm_nopage (struct vm_area_struct * vma, unsigned long address, int *type) +{ + struct emu10k1_wavedevice *wave_dev = vma->vm_private_data; + struct woinst *woinst = wave_dev->woinst; + struct wiinst *wiinst = wave_dev->wiinst; + struct page *dmapage; + unsigned long pgoff; + int rd, wr; + + DPF(3, "emu10k1_mm_nopage()\n"); + DPD(3, "addr: %#lx\n", address); + + if (address > vma->vm_end) { + DPF(1, "EXIT, returning NOPAGE_SIGBUS\n"); + return NOPAGE_SIGBUS; /* Disallow mremap */ + } + + pgoff = vma->vm_pgoff + ((address - vma->vm_start) >> PAGE_SHIFT); + if (woinst != NULL) + wr = woinst->mmapped; + else + wr = 0; + + if (wiinst != NULL) + rd = wiinst->mmapped; + else + rd = 0; + + /* if full-duplex (read+write) and we have two sets of bufs, + * then the playback buffers come first, sez soundcard.c */ + if (wr) { + if (pgoff >= woinst->buffer.pages) { + pgoff -= woinst->buffer.pages; + dmapage = virt_to_page ((u8 *) wiinst->buffer.addr + pgoff * PAGE_SIZE); + } else + dmapage = virt_to_page (woinst->voice[0].mem.addr[pgoff]); + } else { + dmapage = virt_to_page ((u8 *) wiinst->buffer.addr + pgoff * PAGE_SIZE); + } + + get_page (dmapage); + + DPD(3, "page: %#lx\n", (unsigned long) dmapage); + if (type) + *type = VM_FAULT_MINOR; + return dmapage; +} + +static struct vm_operations_struct emu10k1_mm_ops = { + .nopage = emu10k1_mm_nopage, +}; + +static int emu10k1_audio_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct emu10k1_wavedevice *wave_dev = (struct emu10k1_wavedevice *) file->private_data; + unsigned long max_pages, n_pages, pgoffset; + struct woinst *woinst = NULL; + struct wiinst *wiinst = NULL; + unsigned long flags; + + DPF(2, "emu10k1_audio_mmap()\n"); + + max_pages = 0; + if (vma->vm_flags & VM_WRITE) { + woinst = wave_dev->woinst; + + spin_lock_irqsave(&woinst->lock, flags); + + /* No m'mapping possible for multichannel */ + if (woinst->num_voices > 1) { + spin_unlock_irqrestore(&woinst->lock, flags); + return -EINVAL; + } + + 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; + } + } + + woinst->mmapped = 1; + max_pages += woinst->buffer.pages; + spin_unlock_irqrestore(&woinst->lock, flags); + } + + if (vma->vm_flags & VM_READ) { + wiinst = wave_dev->wiinst; + + 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); + ERROR(); + return -EINVAL; + } + } + + wiinst->mmapped = 1; + max_pages += wiinst->buffer.pages; + spin_unlock_irqrestore(&wiinst->lock, flags); + } + + n_pages = ((vma->vm_end - vma->vm_start) + PAGE_SIZE - 1) >> PAGE_SHIFT; + pgoffset = vma->vm_pgoff; + + DPD(2, "vma_start: %#lx, vma_end: %#lx, vma_offset: %ld\n", vma->vm_start, vma->vm_end, pgoffset); + DPD(2, "n_pages: %ld, max_pages: %ld\n", n_pages, max_pages); + + if (pgoffset + n_pages > max_pages) + return -EINVAL; + + vma->vm_flags |= VM_RESERVED; + vma->vm_ops = &emu10k1_mm_ops; + vma->vm_private_data = wave_dev; + return 0; +} + +static int emu10k1_audio_open(struct inode *inode, struct file *file) +{ + int minor = iminor(inode); + 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_dev ^ minor) & ~0xf) || !((card->audio_dev1 ^ minor) & ~0xf)) + goto match; + } + + return -ENODEV; + +match: + + wave_dev = (struct emu10k1_wavedevice *) kmalloc(sizeof(struct emu10k1_wavedevice), GFP_KERNEL); + + if (wave_dev == NULL) { + ERROR(); + return -ENOMEM; + } + + 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(); + kfree(wave_dev); + return -ENOMEM; + } + + wiinst->recsrc = card->wavein.recsrc; + wiinst->fxwc = card->wavein.fxwc; + + switch (wiinst->recsrc) { + case WAVERECORD_AC97: + wiinst->format.id = AFMT_S16_LE; + wiinst->format.samplingrate = 8000; + wiinst->format.bitsperchannel = 16; + wiinst->format.channels = 1; + break; + case WAVERECORD_MIC: + wiinst->format.id = AFMT_S16_LE; + wiinst->format.samplingrate = 8000; + wiinst->format.bitsperchannel = 16; + wiinst->format.channels = 1; + break; + case WAVERECORD_FX: + wiinst->format.id = AFMT_S16_LE; + wiinst->format.samplingrate = 48000; + wiinst->format.bitsperchannel = 16; + wiinst->format.channels = hweight32(wiinst->fxwc); + break; + default: + kfree(wave_dev); + kfree(wiinst); + 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; + spin_lock_init(&wiinst->lock); + 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; + int i; + + if ((woinst = (struct woinst *) kmalloc(sizeof(struct woinst), GFP_KERNEL)) == NULL) { + ERROR(); + kfree(wave_dev); + return -ENOMEM; + } + + if (wave_dev->wiinst != NULL) { + woinst->format = wave_dev->wiinst->format; + } else { + woinst->format.id = AFMT_U8; + 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->audio_dev1 == minor); + woinst->timer.state = TIMER_STATE_UNINSTALLED; + woinst->num_voices = 1; + for (i = 0; i < WAVEOUT_MAXVOICES; i++) { + woinst->voice[i].usage = VOICE_USAGE_FREE; + woinst->voice[i].mem.emupageindex = -1; + } + + init_waitqueue_head(&woinst->wait_queue); + + woinst->mmapped = 0; + woinst->total_copied = 0; + woinst->total_played = 0; + woinst->blocks = 0; + spin_lock_init(&woinst->lock); + tasklet_init(&woinst->timer.tasklet, emu10k1_waveout_bh, (unsigned long) wave_dev); + wave_dev->woinst = woinst; + emu10k1_waveout_setformat(wave_dev, &woinst->format); + } + + file->private_data = (void *) wave_dev; + + return nonseekable_open(inode, file); +} + +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; + + 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->format.passthrough==2) + card->pt.state=PT_STATE_PLAYING; + if (woinst->format.passthrough && card->pt.state != PT_STATE_INACTIVE){ + spin_lock(&card->pt.lock); + emu10k1_pt_stop(card); + spin_unlock(&card->pt.lock); + } + 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); + } + } + } + emu10k1_waveout_close(wave_dev); + } + + spin_unlock_irqrestore(&woinst->lock, flags); + /* remove the tasklet */ + tasklet_kill(&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_kill(&wiinst->timer.tasklet); + kfree(wave_dev->wiinst); + } + + kfree(wave_dev); + + if (waitqueue_active(&card->open_wait)) + wake_up_interruptible(&card->open_wait); + + return 0; +} + +/* FIXME sort out poll() + mmap() */ +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; + + 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_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.bytespervoicesample * woinst->format.samplingrate * 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; + + while (buffer->fragment_size * WAVEOUT_MINFRAGS > WAVEOUT_MAXBUFSIZE) + buffer->fragment_size >>= 1; + + /* now we are sure that: + (2^WAVEOUT_MINFRAGSHIFT) <= (fragment_size = 2^n) <= (WAVEOUT_MAXBUFSIZE / WAVEOUT_MINFRAGS) + */ + + if (!buffer->numfrags) { + u32 numfrags; + + numfrags = (woinst->format.bytespervoicesample * woinst->format.samplingrate * WAVEOUT_DEFAULTBUFLEN) / + (buffer->fragment_size * 1000) - 1; + + buffer->numfrags = 1; + + while (numfrags) { + numfrags >>= 1; + buffer->numfrags <<= 1; + } + } + + if (buffer->numfrags < WAVEOUT_MINFRAGS) + buffer->numfrags = WAVEOUT_MINFRAGS; + + if (buffer->numfrags * buffer->fragment_size > WAVEOUT_MAXBUFSIZE) + buffer->numfrags = WAVEOUT_MAXBUFSIZE / buffer->fragment_size; + + if (buffer->numfrags < WAVEOUT_MINFRAGS) + BUG(); + + 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; + + while (buffer->fragment_size * WAVEIN_MINFRAGS > WAVEIN_MAXBUFSIZE) + buffer->fragment_size >>= 1; + + /* now we are sure that: + (2^WAVEIN_MINFRAGSHIFT) <= (fragment_size = 2^n) <= (WAVEIN_MAXBUFSIZE / WAVEIN_MINFRAGS) + */ + + + if (!buffer->numfrags) + buffer->numfrags = (wiinst->format.bytespersec * WAVEIN_DEFAULTBUFLEN) / (buffer->fragment_size * 1000) - 1; + + if (buffer->numfrags < WAVEIN_MINFRAGS) + buffer->numfrags = WAVEIN_MINFRAGS; + + if (buffer->numfrags * buffer->fragment_size > WAVEIN_MAXBUFSIZE) + buffer->numfrags = WAVEIN_MAXBUFSIZE / buffer->fragment_size; + + if (buffer->numfrags < WAVEIN_MINFRAGS) + BUG(); + + bufsize = buffer->fragment_size * buffer->numfrags; + + /* the buffer size for recording is restricted to certain values, adjust it now */ + 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; + } + } + + /* adjust the fragment size so that buffer size is an integer multiple */ + while (buffer->size % buffer->fragment_size) + buffer->fragment_size >>= 1; + + buffer->numfrags = buffer->size / buffer->fragment_size; + buffer->pages = buffer->size / PAGE_SIZE + ((buffer->size % PAGE_SIZE) ? 1 : 0); + + 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 -> %#04x\n", buffer->sizeregval); + + return; +} + +static 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; + + if (!wiinst) + return; + + 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); + emu10k1_wavein_getxfersize(wiinst, &bytestocopy); + + spin_unlock_irqrestore(&wiinst->lock, flags); + + if (bytestocopy >= wiinst->buffer.fragment_size) { + if (waitqueue_active(&wiinst->wait_queue)) + wake_up_interruptible(&wiinst->wait_queue); + } else + DPD(3, "Not enough transfer size, %d\n", bytestocopy); + + return; +} + +static 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; + + if (!woinst) + return; + + 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) { + if (waitqueue_active(&woinst->wait_queue)) + 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 = no_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, +}; |