aboutsummaryrefslogtreecommitdiff
path: root/sound/core/seq/seq_memory.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/core/seq/seq_memory.c')
-rw-r--r--sound/core/seq/seq_memory.c113
1 files changed, 62 insertions, 51 deletions
diff --git a/sound/core/seq/seq_memory.c b/sound/core/seq/seq_memory.c
index d4d7d326c4b..1e206de0c2d 100644
--- a/sound/core/seq/seq_memory.c
+++ b/sound/core/seq/seq_memory.c
@@ -1,7 +1,7 @@
/*
* ALSA sequencer Memory Manager
* Copyright (c) 1998 by Frank van de Pol <fvdpol@coil.demon.nl>
- * Jaroslav Kysela <perex@suse.cz>
+ * Jaroslav Kysela <perex@perex.cz>
* 2000 by Takashi Iwai <tiwai@suse.de>
*
* This program is free software; you can redistribute it and/or modify
@@ -20,8 +20,8 @@
*
*/
-#include <sound/driver.h>
#include <linux/init.h>
+#include <linux/export.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <sound/core.h>
@@ -32,16 +32,12 @@
#include "seq_info.h"
#include "seq_lock.h"
-/* semaphore in struct file record */
-#define semaphore_of(fp) ((fp)->f_dentry->d_inode->i_sem)
-
-
-static inline int snd_seq_pool_available(pool_t *pool)
+static inline int snd_seq_pool_available(struct snd_seq_pool *pool)
{
return pool->total_elements - atomic_read(&pool->counter);
}
-static inline int snd_seq_output_ok(pool_t *pool)
+static inline int snd_seq_output_ok(struct snd_seq_pool *pool)
{
return snd_seq_pool_available(pool) >= pool->room;
}
@@ -72,7 +68,7 @@ static inline int snd_seq_output_ok(pool_t *pool)
* call dump function to expand external data.
*/
-static int get_var_len(const snd_seq_event_t *event)
+static int get_var_len(const struct snd_seq_event *event)
{
if ((event->flags & SNDRV_SEQ_EVENT_LENGTH_MASK) != SNDRV_SEQ_EVENT_LENGTH_VARIABLE)
return -EINVAL;
@@ -80,17 +76,18 @@ static int get_var_len(const snd_seq_event_t *event)
return event->data.ext.len & ~SNDRV_SEQ_EXT_MASK;
}
-int snd_seq_dump_var_event(const snd_seq_event_t *event, snd_seq_dump_func_t func, void *private_data)
+int snd_seq_dump_var_event(const struct snd_seq_event *event,
+ snd_seq_dump_func_t func, void *private_data)
{
int len, err;
- snd_seq_event_cell_t *cell;
+ struct snd_seq_event_cell *cell;
if ((len = get_var_len(event)) <= 0)
return len;
if (event->data.ext.len & SNDRV_SEQ_EXT_USRPTR) {
char buf[32];
- char __user *curptr = (char __user *)event->data.ext.ptr;
+ char __user *curptr = (char __force __user *)event->data.ext.ptr;
while (len > 0) {
int size = sizeof(buf);
if (len < size)
@@ -108,9 +105,9 @@ int snd_seq_dump_var_event(const snd_seq_event_t *event, snd_seq_dump_func_t fun
return func(private_data, event->data.ext.ptr, len);
}
- cell = (snd_seq_event_cell_t*)event->data.ext.ptr;
+ cell = (struct snd_seq_event_cell *)event->data.ext.ptr;
for (; len > 0 && cell; cell = cell->next) {
- int size = sizeof(snd_seq_event_t);
+ int size = sizeof(struct snd_seq_event);
if (len < size)
size = len;
err = func(private_data, &cell->event, size);
@@ -121,6 +118,8 @@ int snd_seq_dump_var_event(const snd_seq_event_t *event, snd_seq_dump_func_t fun
return 0;
}
+EXPORT_SYMBOL(snd_seq_dump_var_event);
+
/*
* exported:
@@ -142,7 +141,8 @@ static int seq_copy_in_user(char __user **bufptr, const void *src, int size)
return 0;
}
-int snd_seq_expand_var_event(const snd_seq_event_t *event, int count, char *buf, int in_kernel, int size_aligned)
+int snd_seq_expand_var_event(const struct snd_seq_event *event, int count, char *buf,
+ int in_kernel, int size_aligned)
{
int len, newlen;
int err;
@@ -151,14 +151,14 @@ int snd_seq_expand_var_event(const snd_seq_event_t *event, int count, char *buf,
return len;
newlen = len;
if (size_aligned > 0)
- newlen = ((len + size_aligned - 1) / size_aligned) * size_aligned;
+ newlen = roundup(len, size_aligned);
if (count < newlen)
return -EAGAIN;
if (event->data.ext.len & SNDRV_SEQ_EXT_USRPTR) {
if (! in_kernel)
return -EINVAL;
- if (copy_from_user(buf, (void __user *)event->data.ext.ptr, len))
+ if (copy_from_user(buf, (void __force __user *)event->data.ext.ptr, len))
return -EFAULT;
return newlen;
}
@@ -169,32 +169,36 @@ int snd_seq_expand_var_event(const snd_seq_event_t *event, int count, char *buf,
return err < 0 ? err : newlen;
}
+EXPORT_SYMBOL(snd_seq_expand_var_event);
/*
* release this cell, free extended data if available
*/
-static inline void free_cell(pool_t *pool, snd_seq_event_cell_t *cell)
+static inline void free_cell(struct snd_seq_pool *pool,
+ struct snd_seq_event_cell *cell)
{
cell->next = pool->free;
pool->free = cell;
atomic_dec(&pool->counter);
}
-void snd_seq_cell_free(snd_seq_event_cell_t * cell)
+void snd_seq_cell_free(struct snd_seq_event_cell * cell)
{
unsigned long flags;
- pool_t *pool;
+ struct snd_seq_pool *pool;
- snd_assert(cell != NULL, return);
+ if (snd_BUG_ON(!cell))
+ return;
pool = cell->pool;
- snd_assert(pool != NULL, return);
+ if (snd_BUG_ON(!pool))
+ return;
spin_lock_irqsave(&pool->lock, flags);
free_cell(pool, cell);
if (snd_seq_ev_is_variable(&cell->event)) {
if (cell->event.data.ext.len & SNDRV_SEQ_EXT_CHAINED) {
- snd_seq_event_cell_t *curp, *nextptr;
+ struct snd_seq_event_cell *curp, *nextptr;
curp = cell->event.data.ext.ptr;
for (; curp; curp = nextptr) {
nextptr = curp->next;
@@ -215,9 +219,11 @@ void snd_seq_cell_free(snd_seq_event_cell_t * cell)
/*
* allocate an event cell.
*/
-static int snd_seq_cell_alloc(pool_t *pool, snd_seq_event_cell_t **cellp, int nonblock, struct file *file)
+static int snd_seq_cell_alloc(struct snd_seq_pool *pool,
+ struct snd_seq_event_cell **cellp,
+ int nonblock, struct file *file)
{
- snd_seq_event_cell_t *cell;
+ struct snd_seq_event_cell *cell;
unsigned long flags;
int err = -EAGAIN;
wait_queue_t wait;
@@ -230,7 +236,7 @@ static int snd_seq_cell_alloc(pool_t *pool, snd_seq_event_cell_t **cellp, int no
init_waitqueue_entry(&wait, current);
spin_lock_irqsave(&pool->lock, flags);
if (pool->ptr == NULL) { /* not initialized */
- snd_printd("seq: pool is not initialized\n");
+ pr_debug("ALSA: seq: pool is not initialized\n");
err = -EINVAL;
goto __error;
}
@@ -280,11 +286,13 @@ __error:
* if the event has external data, the data is decomposed to additional
* cells.
*/
-int snd_seq_event_dup(pool_t *pool, snd_seq_event_t *event, snd_seq_event_cell_t **cellp, int nonblock, struct file *file)
+int snd_seq_event_dup(struct snd_seq_pool *pool, struct snd_seq_event *event,
+ struct snd_seq_event_cell **cellp, int nonblock,
+ struct file *file)
{
int ncells, err;
unsigned int extlen;
- snd_seq_event_cell_t *cell;
+ struct snd_seq_event_cell *cell;
*cellp = NULL;
@@ -292,7 +300,7 @@ int snd_seq_event_dup(pool_t *pool, snd_seq_event_t *event, snd_seq_event_cell_t
extlen = 0;
if (snd_seq_ev_is_variable(event)) {
extlen = event->data.ext.len & ~SNDRV_SEQ_EXT_MASK;
- ncells = (extlen + sizeof(snd_seq_event_t) - 1) / sizeof(snd_seq_event_t);
+ ncells = (extlen + sizeof(struct snd_seq_event) - 1) / sizeof(struct snd_seq_event);
}
if (ncells >= pool->total_elements)
return -ENOMEM;
@@ -309,18 +317,18 @@ int snd_seq_event_dup(pool_t *pool, snd_seq_event_t *event, snd_seq_event_cell_t
int len = extlen;
int is_chained = event->data.ext.len & SNDRV_SEQ_EXT_CHAINED;
int is_usrptr = event->data.ext.len & SNDRV_SEQ_EXT_USRPTR;
- snd_seq_event_cell_t *src, *tmp, *tail;
+ struct snd_seq_event_cell *src, *tmp, *tail;
char *buf;
cell->event.data.ext.len = extlen | SNDRV_SEQ_EXT_CHAINED;
cell->event.data.ext.ptr = NULL;
- src = (snd_seq_event_cell_t*)event->data.ext.ptr;
+ src = (struct snd_seq_event_cell *)event->data.ext.ptr;
buf = (char *)event->data.ext.ptr;
tail = NULL;
while (ncells-- > 0) {
- int size = sizeof(snd_seq_event_t);
+ int size = sizeof(struct snd_seq_event);
if (len < size)
size = len;
err = snd_seq_cell_alloc(pool, &tmp, nonblock, file);
@@ -336,7 +344,7 @@ int snd_seq_event_dup(pool_t *pool, snd_seq_event_t *event, snd_seq_event_cell_t
tmp->event = src->event;
src = src->next;
} else if (is_usrptr) {
- if (copy_from_user(&tmp->event, (char __user *)buf, size)) {
+ if (copy_from_user(&tmp->event, (char __force __user *)buf, size)) {
err = -EFAULT;
goto __error;
}
@@ -358,7 +366,8 @@ __error:
/* poll wait */
-int snd_seq_pool_poll_wait(pool_t *pool, struct file *file, poll_table *wait)
+int snd_seq_pool_poll_wait(struct snd_seq_pool *pool, struct file *file,
+ poll_table *wait)
{
poll_wait(file, &pool->output_sleep, wait);
return snd_seq_output_ok(pool);
@@ -366,19 +375,20 @@ int snd_seq_pool_poll_wait(pool_t *pool, struct file *file, poll_table *wait)
/* allocate room specified number of events */
-int snd_seq_pool_init(pool_t *pool)
+int snd_seq_pool_init(struct snd_seq_pool *pool)
{
int cell;
- snd_seq_event_cell_t *cellptr;
+ struct snd_seq_event_cell *cellptr;
unsigned long flags;
- snd_assert(pool != NULL, return -EINVAL);
+ if (snd_BUG_ON(!pool))
+ return -EINVAL;
if (pool->ptr) /* should be atomic? */
return 0;
- pool->ptr = vmalloc(sizeof(snd_seq_event_cell_t) * pool->size);
+ pool->ptr = vmalloc(sizeof(struct snd_seq_event_cell) * pool->size);
if (pool->ptr == NULL) {
- snd_printd("seq: malloc for sequencer events failed\n");
+ pr_debug("ALSA: seq: malloc for sequencer events failed\n");
return -ENOMEM;
}
@@ -402,13 +412,14 @@ int snd_seq_pool_init(pool_t *pool)
}
/* remove events */
-int snd_seq_pool_done(pool_t *pool)
+int snd_seq_pool_done(struct snd_seq_pool *pool)
{
unsigned long flags;
- snd_seq_event_cell_t *ptr;
+ struct snd_seq_event_cell *ptr;
int max_count = 5 * HZ;
- snd_assert(pool != NULL, return -EINVAL);
+ if (snd_BUG_ON(!pool))
+ return -EINVAL;
/* wait for closing all threads */
spin_lock_irqsave(&pool->lock, flags);
@@ -420,11 +431,10 @@ int snd_seq_pool_done(pool_t *pool)
while (atomic_read(&pool->counter) > 0) {
if (max_count == 0) {
- snd_printk(KERN_WARNING "snd_seq_pool_done timeout: %d cells remain\n", atomic_read(&pool->counter));
+ pr_warn("ALSA: snd_seq_pool_done timeout: %d cells remain\n", atomic_read(&pool->counter));
break;
}
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
+ schedule_timeout_uninterruptible(1);
max_count--;
}
@@ -447,14 +457,14 @@ int snd_seq_pool_done(pool_t *pool)
/* init new memory pool */
-pool_t *snd_seq_pool_new(int poolsize)
+struct snd_seq_pool *snd_seq_pool_new(int poolsize)
{
- pool_t *pool;
+ struct snd_seq_pool *pool;
/* create pool block */
pool = kzalloc(sizeof(*pool), GFP_KERNEL);
if (pool == NULL) {
- snd_printd("seq: malloc failed for pool\n");
+ pr_debug("ALSA: seq: malloc failed for pool\n");
return NULL;
}
spin_lock_init(&pool->lock);
@@ -473,9 +483,9 @@ pool_t *snd_seq_pool_new(int poolsize)
}
/* remove memory pool */
-int snd_seq_pool_delete(pool_t **ppool)
+int snd_seq_pool_delete(struct snd_seq_pool **ppool)
{
- pool_t *pool = *ppool;
+ struct snd_seq_pool *pool = *ppool;
*ppool = NULL;
if (pool == NULL)
@@ -498,7 +508,8 @@ void __exit snd_sequencer_memory_done(void)
/* exported to seq_clientmgr.c */
-void snd_seq_info_pool(snd_info_buffer_t * buffer, pool_t *pool, char *space)
+void snd_seq_info_pool(struct snd_info_buffer *buffer,
+ struct snd_seq_pool *pool, char *space)
{
if (pool == NULL)
return;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:37:07 +0000