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msnd_pinnacle.c
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/*********************************************************************
*
* Turtle Beach MultiSound Sound Card Driver for Linux
* Linux 2.0/2.2 Version
*
* msnd_pinnacle.c / msnd_classic.c
*
* -- If MSND_CLASSIC is defined:
*
* -> driver for Turtle Beach Classic/Monterey/Tahiti
*
* -- Else
*
* -> driver for Turtle Beach Pinnacle/Fiji
*
* Copyright (C) 1998 Andrew Veliath
*
* 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.
*
* 12-3-2000 Modified IO port validation Steve Sycamore
*
********************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/gfp.h>
#include <asm/irq.h>
#include <asm/io.h>
#include "sound_config.h"
#include "sound_firmware.h"
#ifdef MSND_CLASSIC
# ifndef __alpha__
# define SLOWIO
# endif
#endif
#include "msnd.h"
#ifdef MSND_CLASSIC
# ifdef CONFIG_MSNDCLAS_HAVE_BOOT
# define HAVE_DSPCODEH
# endif
# include "msnd_classic.h"
# define LOGNAME "msnd_classic"
#else
# ifdef CONFIG_MSNDPIN_HAVE_BOOT
# define HAVE_DSPCODEH
# endif
# include "msnd_pinnacle.h"
# define LOGNAME "msnd_pinnacle"
#endif
#ifndef CONFIG_MSND_WRITE_NDELAY
# define CONFIG_MSND_WRITE_NDELAY 1
#endif
#define get_play_delay_jiffies(size) ((size) * HZ * \
dev.play_sample_size / 8 / \
dev.play_sample_rate / \
dev.play_channels)
#define get_rec_delay_jiffies(size) ((size) * HZ * \
dev.rec_sample_size / 8 / \
dev.rec_sample_rate / \
dev.rec_channels)
static DEFINE_MUTEX(msnd_pinnacle_mutex);
static multisound_dev_t dev;
#ifndef HAVE_DSPCODEH
static char *dspini, *permini;
static int sizeof_dspini, sizeof_permini;
#endif
static int dsp_full_reset(void);
static void dsp_write_flush(void);
static __inline__ int chk_send_dsp_cmd(multisound_dev_t *dev, register BYTE cmd)
{
if (msnd_send_dsp_cmd(dev, cmd) == 0)
return 0;
dsp_full_reset();
return msnd_send_dsp_cmd(dev, cmd);
}
static void reset_play_queue(void)
{
int n;
LPDAQD lpDAQ;
dev.last_playbank = -1;
writew(PCTODSP_OFFSET(0 * DAQDS__size), dev.DAPQ + JQS_wHead);
writew(PCTODSP_OFFSET(0 * DAQDS__size), dev.DAPQ + JQS_wTail);
for (n = 0, lpDAQ = dev.base + DAPQ_DATA_BUFF; n < 3; ++n, lpDAQ += DAQDS__size) {
writew(PCTODSP_BASED((DWORD)(DAP_BUFF_SIZE * n)), lpDAQ + DAQDS_wStart);
writew(0, lpDAQ + DAQDS_wSize);
writew(1, lpDAQ + DAQDS_wFormat);
writew(dev.play_sample_size, lpDAQ + DAQDS_wSampleSize);
writew(dev.play_channels, lpDAQ + DAQDS_wChannels);
writew(dev.play_sample_rate, lpDAQ + DAQDS_wSampleRate);
writew(HIMT_PLAY_DONE * 0x100 + n, lpDAQ + DAQDS_wIntMsg);
writew(n, lpDAQ + DAQDS_wFlags);
}
}
static void reset_record_queue(void)
{
int n;
LPDAQD lpDAQ;
unsigned long flags;
dev.last_recbank = 2;
writew(PCTODSP_OFFSET(0 * DAQDS__size), dev.DARQ + JQS_wHead);
writew(PCTODSP_OFFSET(dev.last_recbank * DAQDS__size), dev.DARQ + JQS_wTail);
/* Critical section: bank 1 access */
spin_lock_irqsave(&dev.lock, flags);
msnd_outb(HPBLKSEL_1, dev.io + HP_BLKS);
memset_io(dev.base, 0, DAR_BUFF_SIZE * 3);
msnd_outb(HPBLKSEL_0, dev.io + HP_BLKS);
spin_unlock_irqrestore(&dev.lock, flags);
for (n = 0, lpDAQ = dev.base + DARQ_DATA_BUFF; n < 3; ++n, lpDAQ += DAQDS__size) {
writew(PCTODSP_BASED((DWORD)(DAR_BUFF_SIZE * n)) + 0x4000, lpDAQ + DAQDS_wStart);
writew(DAR_BUFF_SIZE, lpDAQ + DAQDS_wSize);
writew(1, lpDAQ + DAQDS_wFormat);
writew(dev.rec_sample_size, lpDAQ + DAQDS_wSampleSize);
writew(dev.rec_channels, lpDAQ + DAQDS_wChannels);
writew(dev.rec_sample_rate, lpDAQ + DAQDS_wSampleRate);
writew(HIMT_RECORD_DONE * 0x100 + n, lpDAQ + DAQDS_wIntMsg);
writew(n, lpDAQ + DAQDS_wFlags);
}
}
static void reset_queues(void)
{
if (dev.mode & FMODE_WRITE) {
msnd_fifo_make_empty(&dev.DAPF);
reset_play_queue();
}
if (dev.mode & FMODE_READ) {
msnd_fifo_make_empty(&dev.DARF);
reset_record_queue();
}
}
static int dsp_set_format(struct file *file, int val)
{
int data, i;
LPDAQD lpDAQ, lpDARQ;
lpDAQ = dev.base + DAPQ_DATA_BUFF;
lpDARQ = dev.base + DARQ_DATA_BUFF;
switch (val) {
case AFMT_U8:
case AFMT_S16_LE:
data = val;
break;
default:
data = DEFSAMPLESIZE;
break;
}
for (i = 0; i < 3; ++i, lpDAQ += DAQDS__size, lpDARQ += DAQDS__size) {
if (file->f_mode & FMODE_WRITE)
writew(data, lpDAQ + DAQDS_wSampleSize);
if (file->f_mode & FMODE_READ)
writew(data, lpDARQ + DAQDS_wSampleSize);
}
if (file->f_mode & FMODE_WRITE)
dev.play_sample_size = data;
if (file->f_mode & FMODE_READ)
dev.rec_sample_size = data;
return data;
}
static int dsp_get_frag_size(void)
{
int size;
size = dev.fifosize / 4;
if (size > 32 * 1024)
size = 32 * 1024;
return size;
}
static int dsp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int val, i, data, tmp;
LPDAQD lpDAQ, lpDARQ;
audio_buf_info abinfo;
unsigned long flags;
int __user *p = (int __user *)arg;
lpDAQ = dev.base + DAPQ_DATA_BUFF;
lpDARQ = dev.base + DARQ_DATA_BUFF;
switch (cmd) {
case SNDCTL_DSP_SUBDIVIDE:
case SNDCTL_DSP_SETFRAGMENT:
case SNDCTL_DSP_SETDUPLEX:
case SNDCTL_DSP_POST:
return 0;
case SNDCTL_DSP_GETIPTR:
case SNDCTL_DSP_GETOPTR:
case SNDCTL_DSP_MAPINBUF:
case SNDCTL_DSP_MAPOUTBUF:
return -EINVAL;
case SNDCTL_DSP_GETOSPACE:
if (!(file->f_mode & FMODE_WRITE))
return -EINVAL;
spin_lock_irqsave(&dev.lock, flags);
abinfo.fragsize = dsp_get_frag_size();
abinfo.bytes = dev.DAPF.n - dev.DAPF.len;
abinfo.fragstotal = dev.DAPF.n / abinfo.fragsize;
abinfo.fragments = abinfo.bytes / abinfo.fragsize;
spin_unlock_irqrestore(&dev.lock, flags);
return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
case SNDCTL_DSP_GETISPACE:
if (!(file->f_mode & FMODE_READ))
return -EINVAL;
spin_lock_irqsave(&dev.lock, flags);
abinfo.fragsize = dsp_get_frag_size();
abinfo.bytes = dev.DARF.n - dev.DARF.len;
abinfo.fragstotal = dev.DARF.n / abinfo.fragsize;
abinfo.fragments = abinfo.bytes / abinfo.fragsize;
spin_unlock_irqrestore(&dev.lock, flags);
return copy_to_user((void __user *)arg, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
case SNDCTL_DSP_RESET:
dev.nresets = 0;
reset_queues();
return 0;
case SNDCTL_DSP_SYNC:
dsp_write_flush();
return 0;
case SNDCTL_DSP_GETBLKSIZE:
tmp = dsp_get_frag_size();
if (put_user(tmp, p))
return -EFAULT;
return 0;
case SNDCTL_DSP_GETFMTS:
val = AFMT_S16_LE | AFMT_U8;
if (put_user(val, p))
return -EFAULT;
return 0;
case SNDCTL_DSP_SETFMT:
if (get_user(val, p))
return -EFAULT;
if (file->f_mode & FMODE_WRITE)
data = val == AFMT_QUERY
? dev.play_sample_size
: dsp_set_format(file, val);
else
data = val == AFMT_QUERY
? dev.rec_sample_size
: dsp_set_format(file, val);
if (put_user(data, p))
return -EFAULT;
return 0;
case SNDCTL_DSP_NONBLOCK:
if (!test_bit(F_DISABLE_WRITE_NDELAY, &dev.flags) &&
file->f_mode & FMODE_WRITE)
dev.play_ndelay = 1;
if (file->f_mode & FMODE_READ)
dev.rec_ndelay = 1;
return 0;
case SNDCTL_DSP_GETCAPS:
val = DSP_CAP_DUPLEX | DSP_CAP_BATCH;
if (put_user(val, p))
return -EFAULT;
return 0;
case SNDCTL_DSP_SPEED:
if (get_user(val, p))
return -EFAULT;
if (val < 8000)
val = 8000;
if (val > 48000)
val = 48000;
data = val;
for (i = 0; i < 3; ++i, lpDAQ += DAQDS__size, lpDARQ += DAQDS__size) {
if (file->f_mode & FMODE_WRITE)
writew(data, lpDAQ + DAQDS_wSampleRate);
if (file->f_mode & FMODE_READ)
writew(data, lpDARQ + DAQDS_wSampleRate);
}
if (file->f_mode & FMODE_WRITE)
dev.play_sample_rate = data;
if (file->f_mode & FMODE_READ)
dev.rec_sample_rate = data;
if (put_user(data, p))
return -EFAULT;
return 0;
case SNDCTL_DSP_CHANNELS:
case SNDCTL_DSP_STEREO:
if (get_user(val, p))
return -EFAULT;
if (cmd == SNDCTL_DSP_CHANNELS) {
switch (val) {
case 1:
case 2:
data = val;
break;
default:
val = data = 2;
break;
}
} else {
switch (val) {
case 0:
data = 1;
break;
default:
val = 1;
case 1:
data = 2;
break;
}
}
for (i = 0; i < 3; ++i, lpDAQ += DAQDS__size, lpDARQ += DAQDS__size) {
if (file->f_mode & FMODE_WRITE)
writew(data, lpDAQ + DAQDS_wChannels);
if (file->f_mode & FMODE_READ)
writew(data, lpDARQ + DAQDS_wChannels);
}
if (file->f_mode & FMODE_WRITE)
dev.play_channels = data;
if (file->f_mode & FMODE_READ)
dev.rec_channels = data;
if (put_user(val, p))
return -EFAULT;
return 0;
}
return -EINVAL;
}
static int mixer_get(int d)
{
if (d > 31)
return -EINVAL;
switch (d) {
case SOUND_MIXER_VOLUME:
case SOUND_MIXER_PCM:
case SOUND_MIXER_LINE:
case SOUND_MIXER_IMIX:
case SOUND_MIXER_LINE1:
#ifndef MSND_CLASSIC
case SOUND_MIXER_MIC:
case SOUND_MIXER_SYNTH:
#endif
return (dev.left_levels[d] >> 8) * 100 / 0xff |
(((dev.right_levels[d] >> 8) * 100 / 0xff) << 8);
default:
return 0;
}
}
#define update_volm(a,b) \
writew((dev.left_levels[a] >> 1) * \
readw(dev.SMA + SMA_wCurrMastVolLeft) / 0xffff, \
dev.SMA + SMA_##b##Left); \
writew((dev.right_levels[a] >> 1) * \
readw(dev.SMA + SMA_wCurrMastVolRight) / 0xffff, \
dev.SMA + SMA_##b##Right);
#define update_potm(d,s,ar) \
writeb((dev.left_levels[d] >> 8) * \
readw(dev.SMA + SMA_wCurrMastVolLeft) / 0xffff, \
dev.SMA + SMA_##s##Left); \
writeb((dev.right_levels[d] >> 8) * \
readw(dev.SMA + SMA_wCurrMastVolRight) / 0xffff, \
dev.SMA + SMA_##s##Right); \
if (msnd_send_word(&dev, 0, 0, ar) == 0) \
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
#define update_pot(d,s,ar) \
writeb(dev.left_levels[d] >> 8, \
dev.SMA + SMA_##s##Left); \
writeb(dev.right_levels[d] >> 8, \
dev.SMA + SMA_##s##Right); \
if (msnd_send_word(&dev, 0, 0, ar) == 0) \
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
static int mixer_set(int d, int value)
{
int left = value & 0x000000ff;
int right = (value & 0x0000ff00) >> 8;
int bLeft, bRight;
int wLeft, wRight;
int updatemaster = 0;
if (d > 31)
return -EINVAL;
bLeft = left * 0xff / 100;
wLeft = left * 0xffff / 100;
bRight = right * 0xff / 100;
wRight = right * 0xffff / 100;
dev.left_levels[d] = wLeft;
dev.right_levels[d] = wRight;
switch (d) {
/* master volume unscaled controls */
case SOUND_MIXER_LINE: /* line pot control */
/* scaled by IMIX in digital mix */
writeb(bLeft, dev.SMA + SMA_bInPotPosLeft);
writeb(bRight, dev.SMA + SMA_bInPotPosRight);
if (msnd_send_word(&dev, 0, 0, HDEXAR_IN_SET_POTS) == 0)
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
break;
#ifndef MSND_CLASSIC
case SOUND_MIXER_MIC: /* mic pot control */
/* scaled by IMIX in digital mix */
writeb(bLeft, dev.SMA + SMA_bMicPotPosLeft);
writeb(bRight, dev.SMA + SMA_bMicPotPosRight);
if (msnd_send_word(&dev, 0, 0, HDEXAR_MIC_SET_POTS) == 0)
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
break;
#endif
case SOUND_MIXER_VOLUME: /* master volume */
writew(wLeft, dev.SMA + SMA_wCurrMastVolLeft);
writew(wRight, dev.SMA + SMA_wCurrMastVolRight);
/* fall through */
case SOUND_MIXER_LINE1: /* aux pot control */
/* scaled by master volume */
/* fall through */
/* digital controls */
case SOUND_MIXER_SYNTH: /* synth vol (dsp mix) */
case SOUND_MIXER_PCM: /* pcm vol (dsp mix) */
case SOUND_MIXER_IMIX: /* input monitor (dsp mix) */
/* scaled by master volume */
updatemaster = 1;
break;
default:
return 0;
}
if (updatemaster) {
/* update master volume scaled controls */
update_volm(SOUND_MIXER_PCM, wCurrPlayVol);
update_volm(SOUND_MIXER_IMIX, wCurrInVol);
#ifndef MSND_CLASSIC
update_volm(SOUND_MIXER_SYNTH, wCurrMHdrVol);
#endif
update_potm(SOUND_MIXER_LINE1, bAuxPotPos, HDEXAR_AUX_SET_POTS);
}
return mixer_get(d);
}
static void mixer_setup(void)
{
update_pot(SOUND_MIXER_LINE, bInPotPos, HDEXAR_IN_SET_POTS);
update_potm(SOUND_MIXER_LINE1, bAuxPotPos, HDEXAR_AUX_SET_POTS);
update_volm(SOUND_MIXER_PCM, wCurrPlayVol);
update_volm(SOUND_MIXER_IMIX, wCurrInVol);
#ifndef MSND_CLASSIC
update_pot(SOUND_MIXER_MIC, bMicPotPos, HDEXAR_MIC_SET_POTS);
update_volm(SOUND_MIXER_SYNTH, wCurrMHdrVol);
#endif
}
static unsigned long set_recsrc(unsigned long recsrc)
{
if (dev.recsrc == recsrc)
return dev.recsrc;
#ifdef HAVE_NORECSRC
else if (recsrc == 0)
dev.recsrc = 0;
#endif
else
dev.recsrc ^= recsrc;
#ifndef MSND_CLASSIC
if (dev.recsrc & SOUND_MASK_IMIX) {
if (msnd_send_word(&dev, 0, 0, HDEXAR_SET_ANA_IN) == 0)
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
}
else if (dev.recsrc & SOUND_MASK_SYNTH) {
if (msnd_send_word(&dev, 0, 0, HDEXAR_SET_SYNTH_IN) == 0)
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
}
else if ((dev.recsrc & SOUND_MASK_DIGITAL1) && test_bit(F_HAVEDIGITAL, &dev.flags)) {
if (msnd_send_word(&dev, 0, 0, HDEXAR_SET_DAT_IN) == 0)
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
}
else {
#ifdef HAVE_NORECSRC
/* Select no input (?) */
dev.recsrc = 0;
#else
dev.recsrc = SOUND_MASK_IMIX;
if (msnd_send_word(&dev, 0, 0, HDEXAR_SET_ANA_IN) == 0)
chk_send_dsp_cmd(&dev, HDEX_AUX_REQ);
#endif
}
#endif /* MSND_CLASSIC */
return dev.recsrc;
}
static unsigned long force_recsrc(unsigned long recsrc)
{
dev.recsrc = 0;
return set_recsrc(recsrc);
}
#define set_mixer_info() \
memset(&info, 0, sizeof(info)); \
strlcpy(info.id, "MSNDMIXER", sizeof(info.id)); \
strlcpy(info.name, "MultiSound Mixer", sizeof(info.name));
static int mixer_ioctl(unsigned int cmd, unsigned long arg)
{
if (cmd == SOUND_MIXER_INFO) {
mixer_info info;
set_mixer_info();
info.modify_counter = dev.mixer_mod_count;
if (copy_to_user((void __user *)arg, &info, sizeof(info)))
return -EFAULT;
return 0;
} else if (cmd == SOUND_OLD_MIXER_INFO) {
_old_mixer_info info;
set_mixer_info();
if (copy_to_user((void __user *)arg, &info, sizeof(info)))
return -EFAULT;
return 0;
} else if (cmd == SOUND_MIXER_PRIVATE1) {
dev.nresets = 0;
dsp_full_reset();
return 0;
} else if (((cmd >> 8) & 0xff) == 'M') {
int val = 0;
if (_SIOC_DIR(cmd) & _SIOC_WRITE) {
switch (cmd & 0xff) {
case SOUND_MIXER_RECSRC:
if (get_user(val, (int __user *)arg))
return -EFAULT;
val = set_recsrc(val);
break;
default:
if (get_user(val, (int __user *)arg))
return -EFAULT;
val = mixer_set(cmd & 0xff, val);
break;
}
++dev.mixer_mod_count;
return put_user(val, (int __user *)arg);
} else {
switch (cmd & 0xff) {
case SOUND_MIXER_RECSRC:
val = dev.recsrc;
break;
case SOUND_MIXER_DEVMASK:
case SOUND_MIXER_STEREODEVS:
val = SOUND_MASK_PCM |
SOUND_MASK_LINE |
SOUND_MASK_IMIX |
SOUND_MASK_LINE1 |
#ifndef MSND_CLASSIC
SOUND_MASK_MIC |
SOUND_MASK_SYNTH |
#endif
SOUND_MASK_VOLUME;
break;
case SOUND_MIXER_RECMASK:
#ifdef MSND_CLASSIC
val = 0;
#else
val = SOUND_MASK_IMIX |
SOUND_MASK_SYNTH;
if (test_bit(F_HAVEDIGITAL, &dev.flags))
val |= SOUND_MASK_DIGITAL1;
#endif
break;
case SOUND_MIXER_CAPS:
val = SOUND_CAP_EXCL_INPUT;
break;
default:
if ((val = mixer_get(cmd & 0xff)) < 0)
return -EINVAL;
break;
}
}
return put_user(val, (int __user *)arg);
}
return -EINVAL;
}
static long dev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
int minor = iminor(file_inode(file));
int ret;
if (cmd == OSS_GETVERSION) {
int sound_version = SOUND_VERSION;
return put_user(sound_version, (int __user *)arg);
}
ret = -EINVAL;
mutex_lock(&msnd_pinnacle_mutex);
if (minor == dev.dsp_minor)
ret = dsp_ioctl(file, cmd, arg);
else if (minor == dev.mixer_minor)
ret = mixer_ioctl(cmd, arg);
mutex_unlock(&msnd_pinnacle_mutex);
return ret;
}
static void dsp_write_flush(void)
{
int timeout = get_play_delay_jiffies(dev.DAPF.len);
if (!(dev.mode & FMODE_WRITE) || !test_bit(F_WRITING, &dev.flags))
return;
set_bit(F_WRITEFLUSH, &dev.flags);
wait_event_interruptible_timeout(
dev.writeflush,
!test_bit(F_WRITEFLUSH, &dev.flags),
timeout);
clear_bit(F_WRITEFLUSH, &dev.flags);
if (!signal_pending(current)) {
__set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(get_play_delay_jiffies(DAP_BUFF_SIZE));
}
clear_bit(F_WRITING, &dev.flags);
}
static void dsp_halt(struct file *file)
{
if ((file ? file->f_mode : dev.mode) & FMODE_READ) {
clear_bit(F_READING, &dev.flags);
chk_send_dsp_cmd(&dev, HDEX_RECORD_STOP);
msnd_disable_irq(&dev);
if (file) {
printk(KERN_DEBUG LOGNAME ": Stopping read for %p\n", file);
dev.mode &= ~FMODE_READ;
}
clear_bit(F_AUDIO_READ_INUSE, &dev.flags);
}
if ((file ? file->f_mode : dev.mode) & FMODE_WRITE) {
if (test_bit(F_WRITING, &dev.flags)) {
dsp_write_flush();
chk_send_dsp_cmd(&dev, HDEX_PLAY_STOP);
}
msnd_disable_irq(&dev);
if (file) {
printk(KERN_DEBUG LOGNAME ": Stopping write for %p\n", file);
dev.mode &= ~FMODE_WRITE;
}
clear_bit(F_AUDIO_WRITE_INUSE, &dev.flags);
}
}
static int dsp_release(struct file *file)
{
dsp_halt(file);
return 0;
}
static int dsp_open(struct file *file)
{
if ((file ? file->f_mode : dev.mode) & FMODE_WRITE) {
set_bit(F_AUDIO_WRITE_INUSE, &dev.flags);
clear_bit(F_WRITING, &dev.flags);
msnd_fifo_make_empty(&dev.DAPF);
reset_play_queue();
if (file) {
printk(KERN_DEBUG LOGNAME ": Starting write for %p\n", file);
dev.mode |= FMODE_WRITE;
}
msnd_enable_irq(&dev);
}
if ((file ? file->f_mode : dev.mode) & FMODE_READ) {
set_bit(F_AUDIO_READ_INUSE, &dev.flags);
clear_bit(F_READING, &dev.flags);
msnd_fifo_make_empty(&dev.DARF);
reset_record_queue();
if (file) {
printk(KERN_DEBUG LOGNAME ": Starting read for %p\n", file);
dev.mode |= FMODE_READ;
}
msnd_enable_irq(&dev);
}
return 0;
}
static void set_default_play_audio_parameters(void)
{
dev.play_sample_size = DEFSAMPLESIZE;
dev.play_sample_rate = DEFSAMPLERATE;
dev.play_channels = DEFCHANNELS;
}
static void set_default_rec_audio_parameters(void)
{
dev.rec_sample_size = DEFSAMPLESIZE;
dev.rec_sample_rate = DEFSAMPLERATE;
dev.rec_channels = DEFCHANNELS;
}
static void set_default_audio_parameters(void)
{
set_default_play_audio_parameters();
set_default_rec_audio_parameters();
}
static int dev_open(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
int err = 0;
mutex_lock(&msnd_pinnacle_mutex);
if (minor == dev.dsp_minor) {
if ((file->f_mode & FMODE_WRITE &&
test_bit(F_AUDIO_WRITE_INUSE, &dev.flags)) ||
(file->f_mode & FMODE_READ &&
test_bit(F_AUDIO_READ_INUSE, &dev.flags))) {
err = -EBUSY;
goto out;
}
if ((err = dsp_open(file)) >= 0) {
dev.nresets = 0;
if (file->f_mode & FMODE_WRITE) {
set_default_play_audio_parameters();
if (!test_bit(F_DISABLE_WRITE_NDELAY, &dev.flags))
dev.play_ndelay = (file->f_flags & O_NDELAY) ? 1 : 0;
else
dev.play_ndelay = 0;
}
if (file->f_mode & FMODE_READ) {
set_default_rec_audio_parameters();
dev.rec_ndelay = (file->f_flags & O_NDELAY) ? 1 : 0;
}
}
}
else if (minor == dev.mixer_minor) {
/* nothing */
} else
err = -EINVAL;
out:
mutex_unlock(&msnd_pinnacle_mutex);
return err;
}
static int dev_release(struct inode *inode, struct file *file)
{
int minor = iminor(inode);
int err = 0;
mutex_lock(&msnd_pinnacle_mutex);
if (minor == dev.dsp_minor)
err = dsp_release(file);
else if (minor == dev.mixer_minor) {
/* nothing */
} else
err = -EINVAL;
mutex_unlock(&msnd_pinnacle_mutex);
return err;
}
static __inline__ int pack_DARQ_to_DARF(register int bank)
{
register int size, timeout = 3;
register WORD wTmp;
LPDAQD DAQD;
/* Increment the tail and check for queue wrap */
wTmp = readw(dev.DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
if (wTmp > readw(dev.DARQ + JQS_wSize))
wTmp = 0;
while (wTmp == readw(dev.DARQ + JQS_wHead) && timeout--)
udelay(1);
writew(wTmp, dev.DARQ + JQS_wTail);
/* Get our digital audio queue struct */
DAQD = bank * DAQDS__size + dev.base + DARQ_DATA_BUFF;
/* Get length of data */
size = readw(DAQD + DAQDS_wSize);
/* Read data from the head (unprotected bank 1 access okay
since this is only called inside an interrupt) */
msnd_outb(HPBLKSEL_1, dev.io + HP_BLKS);
msnd_fifo_write_io(
&dev.DARF,
dev.base + bank * DAR_BUFF_SIZE,
size);
msnd_outb(HPBLKSEL_0, dev.io + HP_BLKS);
return 1;
}
static __inline__ int pack_DAPF_to_DAPQ(register int start)
{
register WORD DAPQ_tail;
register int protect = start, nbanks = 0;
LPDAQD DAQD;
DAPQ_tail = readw(dev.DAPQ + JQS_wTail);
while (DAPQ_tail != readw(dev.DAPQ + JQS_wHead) || start) {
register int bank_num = DAPQ_tail / PCTODSP_OFFSET(DAQDS__size);
register int n;
unsigned long flags;
/* Write the data to the new tail */
if (protect) {
/* Critical section: protect fifo in non-interrupt */
spin_lock_irqsave(&dev.lock, flags);
n = msnd_fifo_read_io(
&dev.DAPF,
dev.base + bank_num * DAP_BUFF_SIZE,
DAP_BUFF_SIZE);
spin_unlock_irqrestore(&dev.lock, flags);
} else {
n = msnd_fifo_read_io(
&dev.DAPF,
dev.base + bank_num * DAP_BUFF_SIZE,
DAP_BUFF_SIZE);
}
if (!n)
break;
if (start)
start = 0;
/* Get our digital audio queue struct */
DAQD = bank_num * DAQDS__size + dev.base + DAPQ_DATA_BUFF;
/* Write size of this bank */
writew(n, DAQD + DAQDS_wSize);
++nbanks;
/* Then advance the tail */
DAPQ_tail = (++bank_num % 3) * PCTODSP_OFFSET(DAQDS__size);
writew(DAPQ_tail, dev.DAPQ + JQS_wTail);
/* Tell the DSP to play the bank */
msnd_send_dsp_cmd(&dev, HDEX_PLAY_START);
}
return nbanks;
}
static int dsp_read(char __user *buf, size_t len)
{
int count = len;
char *page = (char *)__get_free_page(GFP_KERNEL);
int timeout = get_rec_delay_jiffies(DAR_BUFF_SIZE);
if (!page)
return -ENOMEM;
while (count > 0) {
int n, k;
unsigned long flags;
k = PAGE_SIZE;
if (k > count)
k = count;
/* Critical section: protect fifo in non-interrupt */
spin_lock_irqsave(&dev.lock, flags);
n = msnd_fifo_read(&dev.DARF, page, k);
spin_unlock_irqrestore(&dev.lock, flags);
if (copy_to_user(buf, page, n)) {
free_page((unsigned long)page);
return -EFAULT;
}
buf += n;
count -= n;
if (n == k && count)
continue;
if (!test_bit(F_READING, &dev.flags) && dev.mode & FMODE_READ) {
dev.last_recbank = -1;
if (chk_send_dsp_cmd(&dev, HDEX_RECORD_START) == 0)
set_bit(F_READING, &dev.flags);
}
if (dev.rec_ndelay) {
free_page((unsigned long)page);
return count == len ? -EAGAIN : len - count;
}
if (count > 0) {
set_bit(F_READBLOCK, &dev.flags);
if (wait_event_interruptible_timeout(
dev.readblock,
test_bit(F_READBLOCK, &dev.flags),
timeout) <= 0)
clear_bit(F_READING, &dev.flags);
if (signal_pending(current)) {
free_page((unsigned long)page);
return -EINTR;
}
}
}
free_page((unsigned long)page);
return len - count;
}
static int dsp_write(const char __user *buf, size_t len)
{
int count = len;
char *page = (char *)__get_free_page(GFP_KERNEL);
int timeout = get_play_delay_jiffies(DAP_BUFF_SIZE);
if (!page)
return -ENOMEM;
while (count > 0) {
int n, k;
unsigned long flags;
k = PAGE_SIZE;
if (k > count)
k = count;
if (copy_from_user(page, buf, k)) {
free_page((unsigned long)page);
return -EFAULT;
}
/* Critical section: protect fifo in non-interrupt */
spin_lock_irqsave(&dev.lock, flags);
n = msnd_fifo_write(&dev.DAPF, page, k);
spin_unlock_irqrestore(&dev.lock, flags);
buf += n;
count -= n;
if (count && n == k)
continue;
if (!test_bit(F_WRITING, &dev.flags) && (dev.mode & FMODE_WRITE)) {
dev.last_playbank = -1;
if (pack_DAPF_to_DAPQ(1) > 0)
set_bit(F_WRITING, &dev.flags);
}
if (dev.play_ndelay) {
free_page((unsigned long)page);
return count == len ? -EAGAIN : len - count;
}