static unsigned int writeBufSize = DEFAULT_BUFF_SIZE ; /* in bytes */
module_param(writeBufSize, int, 0);
-#ifdef HAS_RECORD
-static unsigned int numReadBufs = DEFAULT_N_BUFFERS;
-module_param(numReadBufs, int, 0);
-static unsigned int readBufSize = DEFAULT_BUFF_SIZE; /* in bytes */
-module_param(readBufSize, int, 0);
-#endif
-
MODULE_LICENSE("GPL");
#ifdef MODULE
static int irq_installed;
#endif /* MODULE */
-/* software implemented recording volume! */
-uint software_input_volume = SW_INPUT_VOLUME_SCALE * SW_INPUT_VOLUME_DEFAULT;
-EXPORT_SYMBOL(software_input_volume);
-
/* control over who can modify resources shared between play/record */
static mode_t shared_resource_owner;
static int shared_resources_initialised;
struct sound_queue dmasound_write_sq;
static void sq_reset_output(void) ;
-#ifdef HAS_RECORD
-struct sound_queue dmasound_read_sq;
-static void sq_reset_input(void) ;
-#endif
static int sq_allocate_buffers(struct sound_queue *sq, int num, int size)
{
sq->rear = -1;
setup_func = dmasound.mach.write_sq_setup;
}
-#ifdef HAS_RECORD
- else {
- sq->rear = 0;
- setup_func = dmasound.mach.read_sq_setup;
- }
-#endif
if (setup_func)
return setup_func();
return 0 ;
}
if (file->f_mode & FMODE_WRITE )
poll_wait(file, &write_sq.action_queue, wait);
-#ifdef HAS_RECORD
- if (file->f_mode & FMODE_READ)
- poll_wait(file, &read_sq.action_queue, wait);
- if (file->f_mode & FMODE_READ)
- if (read_sq.block_size - read_sq.rear_size > 0)
- mask |= POLLIN | POLLRDNORM;
-#endif
if (file->f_mode & FMODE_WRITE)
if (write_sq.count < write_sq.max_active || write_sq.block_size - write_sq.rear_size > 0)
mask |= POLLOUT | POLLWRNORM;
}
-#ifdef HAS_RECORD
- /*
- * Here is how the values are used for reading.
- * The value 'active' simply indicates the DMA is running. This is done
- * so the driver semantics are DMA starts when the first read is posted.
- * The value 'front' indicates the buffer we should next send to the user.
- * The value 'rear' indicates the buffer the DMA is currently filling.
- * When 'front' == 'rear' the buffer "ring" is empty (we always have an
- * empty available). The 'rear_size' is used to track partial offsets
- * into the buffer we are currently returning to the user.
-
- * This level (> [1.5]) doesn't care what strategy the LL driver uses with
- * DMA on over-run. It can leave it running (and keep active == 1) or it
- * can kill it and set active == 0 in which case this routine will spot
- * it and restart the DMA.
- */
-
-static ssize_t sq_read(struct file *file, char __user *dst, size_t uLeft,
- loff_t *ppos)
-{
-
- ssize_t uRead, bLeft, bUsed, uUsed;
-
- if (uLeft == 0)
- return 0;
-
- /* cater for the compatibility mode - record compiled in but no LL */
- if (dmasound.mach.record == NULL)
- return -EINVAL ;
-
- /* see comment in sq_write()
- */
-
- if( shared_resources_initialised == 0) {
- dmasound.mach.init() ;
- shared_resources_initialised = 1 ;
- }
-
- /* set up the sq if it is not already done. see comments in sq_write().
- */
-
- if (read_sq.locked == 0) {
- if ((uRead = sq_setup(&read_sq)) < 0)
- return uRead ;
- }
-
- uRead = 0;
-
- /* Move what the user requests, depending upon other options.
- */
- while (uLeft > 0) {
-
- /* we happened to get behind and the LL driver killed DMA
- then we should set it going again. This also sets it
- going the first time through.
- */
- if ( !read_sq.active )
- dmasound.mach.record();
-
- /* When front == rear, the DMA is not done yet.
- */
- while (read_sq.front == read_sq.rear) {
- if (read_sq.open_mode & O_NONBLOCK) {
- return uRead > 0 ? uRead : -EAGAIN;
- }
- SLEEP(read_sq.action_queue);
- if (signal_pending(current))
- return uRead > 0 ? uRead : -EINTR;
- }
-
- /* The amount we move is either what is left in the
- * current buffer or what the user wants.
- */
- bLeft = read_sq.block_size - read_sq.rear_size;
- bUsed = read_sq.rear_size;
- uUsed = sound_copy_translate(dmasound.trans_read, dst, uLeft,
- read_sq.buffers[read_sq.front],
- &bUsed, bLeft);
- if (uUsed <= 0)
- return uUsed;
- dst += uUsed;
- uRead += uUsed;
- uLeft -= uUsed;
- read_sq.rear_size += bUsed;
- if (read_sq.rear_size >= read_sq.block_size) {
- read_sq.rear_size = 0;
- read_sq.front++;
- if (read_sq.front >= read_sq.max_active)
- read_sq.front = 0;
- }
- }
- return uRead;
-}
-#endif /* HAS_RECORD */
-
static inline void sq_init_waitqueue(struct sound_queue *sq)
{
init_waitqueue_head(&sq->action_queue);
#define write_sq_open(file) \
sq_open2(&write_sq, file, FMODE_WRITE, numWriteBufs, writeBufSize )
-#ifdef HAS_RECORD
-#define read_sq_init_waitqueue() sq_init_waitqueue(&read_sq)
-#if 0 /* blocking open() */
-#define read_sq_wake_up(file) sq_wake_up(&read_sq, file, FMODE_READ)
-#endif
-#define read_sq_release_buffers() sq_release_buffers(&read_sq)
-#define read_sq_open(file) \
- sq_open2(&read_sq, file, FMODE_READ, numReadBufs, readBufSize )
-#else
-#define read_sq_init_waitqueue() do {} while (0)
-#if 0 /* blocking open() */
-#define read_sq_wake_up(file) do {} while (0)
-#endif
-#define read_sq_release_buffers() do {} while (0)
-#define sq_reset_input() do {} while (0)
-#endif
-
static int sq_open(struct inode *inode, struct file *file)
{
int rc;
rc = write_sq_open(file); /* checks the f_mode */
if (rc)
goto out;
-#ifdef HAS_RECORD
- if (dmasound.mach.record) {
- rc = read_sq_open(file); /* checks the f_mode */
- if (rc)
- goto out;
- } else { /* no record function installed; in compat mode */
- if (file->f_mode & FMODE_READ) {
- /* TODO: if O_RDWR, release any resources grabbed by write part */
- rc = -ENXIO;
- goto out;
- }
- }
-#else /* !HAS_RECORD */
if (file->f_mode & FMODE_READ) {
/* TODO: if O_RDWR, release any resources grabbed by write part */
rc = -ENXIO ; /* I think this is what is required by open(2) */
goto out;
}
-#endif /* HAS_RECORD */
if (dmasound.mach.sq_open)
dmasound.mach.sq_open(file->f_mode);
write_sq.user_frag_size = 0 ;
}
-#ifdef HAS_RECORD
-
-static void sq_reset_input(void)
-{
- if (dmasound.mach.record && read_sq.active) {
- if (dmasound.mach.abort_read) { /* this routine must really be present */
- read_sq.syncing = 1 ;
- /* this can use the read_sq.sync_queue to sleep if
- necessary - it should not return until DMA
- is really stopped - because we might deallocate
- the buffers as the next action...
- */
- dmasound.mach.abort_read() ;
- } else {
- printk(KERN_ERR
- "dmasound_core: %s has no abort_read()!! all bets are off\n",
- dmasound.mach.name) ;
- }
- }
- read_sq.syncing =
- read_sq.active =
- read_sq.front =
- read_sq.count =
- read_sq.rear = 0 ;
-
- /* OK - we can unlock the parameters and fragment settings */
- read_sq.locked = 0 ;
- read_sq.user_frags = 0 ;
- read_sq.user_frag_size = 0 ;
-}
-
-#endif
-
static void sq_reset(void)
{
sq_reset_output() ;
- sq_reset_input() ;
/* we could consider resetting the shared_resources_owner here... but I
think it is probably still rather non-obvious to application writer
*/
lock_kernel();
-#ifdef HAS_RECORD
- /* probably best to do the read side first - so that time taken to do it
- overlaps with playing any remaining output samples.
- */
- if (file->f_mode & FMODE_READ) {
- sq_reset_input() ; /* make sure dma is stopped and all is quiet */
- read_sq_release_buffers();
- read_sq.busy = 0;
- }
-#endif
-
if (file->f_mode & FMODE_WRITE) {
if (write_sq.busy)
rc = sq_fsync(file, file->f_path.dentry);
static int queues_are_quiescent(void)
{
-#ifdef HAS_RECORD
- if (dmasound.mach.record)
- if (read_sq.locked)
- return 0 ;
-#endif
if (write_sq.locked)
return 0 ;
return 1 ;
the read_sq ones.
*/
size = 0 ;
-#ifdef HAS_RECORD
- if (dmasound.mach.record && (file->f_mode & FMODE_READ)) {
- if ( !read_sq.locked )
- sq_setup(&read_sq) ; /* set params */
- size = read_sq.user_frag_size ;
- }
-#endif
if (file->f_mode & FMODE_WRITE) {
if ( !write_sq.locked )
sq_setup(&write_sq) ;
everything - read, however, is killed imediately.
*/
result = 0 ;
- if ((file->f_mode & FMODE_READ) && dmasound.mach.record)
- sq_reset_input() ;
if (file->f_mode & FMODE_WRITE) {
result = sq_fsync(file, file->f_path.dentry);
sq_reset_output() ;
result = 0 ;
nbufs = (data >> 16) & 0x7fff ; /* 0x7fff is 'use maximum' */
size = data & 0xffff;
-#ifdef HAS_RECORD
- if ((file->f_mode & FMODE_READ) && dmasound.mach.record) {
- result = set_queue_frags(&read_sq, nbufs, size) ;
- if (result)
- return result ;
- }
-#endif
if (file->f_mode & FMODE_WRITE) {
result = set_queue_frags(&write_sq, nbufs, size) ;
if (result)
.ioctl = sq_ioctl,
.open = sq_open,
.release = sq_release,
-#ifdef HAS_RECORD
- .read = NULL /* default to no read for compat mode */
-#endif
};
static int sq_init(void)
{
+ const struct file_operations *fops = &sq_fops;
#ifndef MODULE
int sq_unit;
#endif
-#ifdef HAS_RECORD
- if (dmasound.mach.record)
- sq_fops.read = sq_read ;
-#endif
- sq_unit = register_sound_dsp(&sq_fops, -1);
+ sq_unit = register_sound_dsp(fops, -1);
if (sq_unit < 0) {
printk(KERN_ERR "dmasound_core: couldn't register fops\n") ;
return sq_unit ;
}
write_sq_init_waitqueue();
- read_sq_init_waitqueue();
/* These parameters will be restored for every clean open()
* in the case of multiple open()s (e.g. dsp0 & dsp1) they
driver.
*/
-#ifdef HAS_RECORD
-#define STAT_BUFF_LEN 1024
-#else
#define STAT_BUFF_LEN 768
-#endif
/* this is how much space we will allow the low-level driver to use
in the stat buffer. Currently, 2 * (80 character line + <NL>).
/* publish this function for use by low-level code, if required */
-char *get_afmt_string(int afmt)
+static char *get_afmt_string(int afmt)
{
switch(afmt) {
case AFMT_MU_LAW:
len += sprintf(buffer+len,"Allocated:%8s%6s\n","Buffers","Size") ;
len += sprintf(buffer+len,"%9s:%8d%6d\n",
"write", write_sq.numBufs, write_sq.bufSize) ;
-#ifdef HAS_RECORD
- if (dmasound.mach.record)
- len += sprintf(buffer+len,"%9s:%8d%6d\n",
- "read", read_sq.numBufs, read_sq.bufSize) ;
-#endif
len += sprintf(buffer+len,
"Current : MaxFrg FragSiz MaxAct Frnt Rear "
"Cnt RrSize A B S L xruns\n") ;
write_sq.max_active, write_sq.front, write_sq.rear,
write_sq.count, write_sq.rear_size, write_sq.active,
write_sq.busy, write_sq.syncing, write_sq.locked, write_sq.xruns) ;
-#ifdef HAS_RECORD
- if (dmasound.mach.record)
- len += sprintf(buffer+len,"%9s:%7d%8d%7d%5d%5d%4d%7d%2d%2d%2d%2d%7d\n",
- "read", read_sq.max_count, read_sq.block_size,
- read_sq.max_active, read_sq.front, read_sq.rear,
- read_sq.count, read_sq.rear_size, read_sq.active,
- read_sq.busy, read_sq.syncing, read_sq.locked, read_sq.xruns) ;
-#endif
#ifdef DEBUG_DMASOUND
printk("dmasound: stat buffer used %d bytes\n", len) ;
#endif
(dmasound.mach.version >> 8), (dmasound.mach.version & 0xff)) ;
printk(KERN_INFO "Write will use %4d fragments of %7d bytes as default\n",
numWriteBufs, writeBufSize) ;
-#ifdef HAS_RECORD
- if (dmasound.mach.record)
- printk(KERN_INFO
- "Read will use %4d fragments of %7d bytes as default\n",
- numReadBufs, readBufSize) ;
-#endif
-
return 0;
}
}
write_sq_release_buffers();
- read_sq_release_buffers();
if (mixer_unit >= 0)
unregister_sound_mixer(mixer_unit);
*/
switch (ints[0]) {
-#ifdef HAS_RECORD
- case 5:
- if ((ints[5] < 0) || (ints[5] > MAX_CATCH_RADIUS))
- printk("dmasound_setup: invalid catch radius, using default = %d\n", catchRadius);
- else
- catchRadius = ints[5];
- /* fall through */
- case 4:
- if (ints[4] < MIN_BUFFERS)
- printk("dmasound_setup: invalid number of read buffers, using default = %d\n",
- numReadBufs);
- else
- numReadBufs = ints[4];
- /* fall through */
- case 3:
- if ((size = ints[3]) < 256) /* check for small buffer specs */
- size <<= 10 ;
- if (size < MIN_BUFSIZE || size > MAX_BUFSIZE)
- printk("dmasound_setup: invalid read buffer size, using default = %d\n", readBufSize);
- else
- readBufSize = size;
- /* fall through */
-#else
case 3:
if ((ints[3] < 0) || (ints[3] > MAX_CATCH_RADIUS))
printk("dmasound_setup: invalid catch radius, using default = %d\n", catchRadius);
else
catchRadius = ints[3];
/* fall through */
-#endif
case 2:
if (ints[1] < MIN_BUFFERS)
printk("dmasound_setup: invalid number of buffers, using default = %d\n", numWriteBufs);
EXPORT_SYMBOL(dmasound_deinit);
#endif
EXPORT_SYMBOL(dmasound_write_sq);
-#ifdef HAS_RECORD
-EXPORT_SYMBOL(dmasound_read_sq);
-#endif
EXPORT_SYMBOL(dmasound_catchRadius);
#ifdef HAS_8BIT_TABLES
EXPORT_SYMBOL(dmasound_ulaw2dma8);
EXPORT_SYMBOL(dmasound_alaw2dma8);
#endif
-EXPORT_SYMBOL(get_afmt_string) ;
git.openpandora.org / pandora-kernel.git / blobdiff