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Diffstat (limited to 'sound/core/memalloc.c')
-rw-r--r--sound/core/memalloc.c100
1 files changed, 21 insertions, 79 deletions
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index f5d6d8d1297..1b3534d6768 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -33,9 +33,6 @@
#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <sound/memalloc.h>
-#ifdef CONFIG_SBUS
-#include <asm/sbus.h>
-#endif
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>, Jaroslav Kysela <perex@perex.cz>");
@@ -46,14 +43,6 @@ MODULE_LICENSE("GPL");
/*
*/
-void *snd_malloc_sgbuf_pages(struct device *device,
- size_t size, struct snd_dma_buffer *dmab,
- size_t *res_size);
-int snd_free_sgbuf_pages(struct snd_dma_buffer *dmab);
-
-/*
- */
-
static DEFINE_MUTEX(list_mutex);
static LIST_HEAD(mem_list_head);
@@ -67,18 +56,6 @@ struct snd_mem_list {
/* id for pre-allocated buffers */
#define SNDRV_DMA_DEVICE_UNUSED (unsigned int)-1
-#ifdef CONFIG_SND_DEBUG
-#define __ASTRING__(x) #x
-#define snd_assert(expr, args...) do {\
- if (!(expr)) {\
- printk(KERN_ERR "snd-malloc: BUG? (%s) (called from %p)\n", __ASTRING__(expr), __builtin_return_address(0));\
- args;\
- }\
-} while (0)
-#else
-#define snd_assert(expr, args...) /**/
-#endif
-
/*
*
* Generic memory allocators
@@ -111,8 +88,10 @@ void *snd_malloc_pages(size_t size, gfp_t gfp_flags)
int pg;
void *res;
- snd_assert(size > 0, return NULL);
- snd_assert(gfp_flags != 0, return NULL);
+ if (WARN_ON(!size))
+ return NULL;
+ if (WARN_ON(!gfp_flags))
+ return NULL;
gfp_flags |= __GFP_COMP; /* compound page lets parts be mapped */
pg = get_order(size);
if ((res = (void *) __get_free_pages(gfp_flags, pg)) != NULL)
@@ -152,8 +131,8 @@ static void *snd_malloc_dev_pages(struct device *dev, size_t size, dma_addr_t *d
void *res;
gfp_t gfp_flags;
- snd_assert(size > 0, return NULL);
- snd_assert(dma != NULL, return NULL);
+ if (WARN_ON(!dma))
+ return NULL;
pg = get_order(size);
gfp_flags = GFP_KERNEL
| __GFP_COMP /* compound page lets parts be mapped */
@@ -180,39 +159,6 @@ static void snd_free_dev_pages(struct device *dev, size_t size, void *ptr,
}
#endif /* CONFIG_HAS_DMA */
-#ifdef CONFIG_SBUS
-
-static void *snd_malloc_sbus_pages(struct device *dev, size_t size,
- dma_addr_t *dma_addr)
-{
- struct sbus_dev *sdev = (struct sbus_dev *)dev;
- int pg;
- void *res;
-
- snd_assert(size > 0, return NULL);
- snd_assert(dma_addr != NULL, return NULL);
- pg = get_order(size);
- res = sbus_alloc_consistent(sdev, PAGE_SIZE * (1 << pg), dma_addr);
- if (res != NULL)
- inc_snd_pages(pg);
- return res;
-}
-
-static void snd_free_sbus_pages(struct device *dev, size_t size,
- void *ptr, dma_addr_t dma_addr)
-{
- struct sbus_dev *sdev = (struct sbus_dev *)dev;
- int pg;
-
- if (ptr == NULL)
- return;
- pg = get_order(size);
- dec_snd_pages(pg);
- sbus_free_consistent(sdev, PAGE_SIZE * (1 << pg), ptr, dma_addr);
-}
-
-#endif /* CONFIG_SBUS */
-
/*
*
* ALSA generic memory management
@@ -236,8 +182,10 @@ static void snd_free_sbus_pages(struct device *dev, size_t size,
int snd_dma_alloc_pages(int type, struct device *device, size_t size,
struct snd_dma_buffer *dmab)
{
- snd_assert(size > 0, return -ENXIO);
- snd_assert(dmab != NULL, return -ENXIO);
+ if (WARN_ON(!size))
+ return -ENXIO;
+ if (WARN_ON(!dmab))
+ return -ENXIO;
dmab->dev.type = type;
dmab->dev.dev = device;
@@ -247,11 +195,6 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
dmab->area = snd_malloc_pages(size, (unsigned long)device);
dmab->addr = 0;
break;
-#ifdef CONFIG_SBUS
- case SNDRV_DMA_TYPE_SBUS:
- dmab->area = snd_malloc_sbus_pages(device, size, &dmab->addr);
- break;
-#endif
#ifdef CONFIG_HAS_DMA
case SNDRV_DMA_TYPE_DEV:
dmab->area = snd_malloc_dev_pages(device, size, &dmab->addr);
@@ -292,15 +235,17 @@ int snd_dma_alloc_pages_fallback(int type, struct device *device, size_t size,
{
int err;
- snd_assert(size > 0, return -ENXIO);
- snd_assert(dmab != NULL, return -ENXIO);
-
while ((err = snd_dma_alloc_pages(type, device, size, dmab)) < 0) {
+ size_t aligned_size;
if (err != -ENOMEM)
return err;
- size >>= 1;
if (size <= PAGE_SIZE)
return -ENOMEM;
+ aligned_size = PAGE_SIZE << get_order(size);
+ if (size != aligned_size)
+ size = aligned_size;
+ else
+ size >>= 1;
}
if (! dmab->area)
return -ENOMEM;
@@ -320,11 +265,6 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab)
case SNDRV_DMA_TYPE_CONTINUOUS:
snd_free_pages(dmab->area, dmab->bytes);
break;
-#ifdef CONFIG_SBUS
- case SNDRV_DMA_TYPE_SBUS:
- snd_free_sbus_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
- break;
-#endif
#ifdef CONFIG_HAS_DMA
case SNDRV_DMA_TYPE_DEV:
snd_free_dev_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
@@ -353,7 +293,8 @@ size_t snd_dma_get_reserved_buf(struct snd_dma_buffer *dmab, unsigned int id)
{
struct snd_mem_list *mem;
- snd_assert(dmab, return 0);
+ if (WARN_ON(!dmab))
+ return 0;
mutex_lock(&list_mutex);
list_for_each_entry(mem, &mem_list_head, list) {
@@ -387,7 +328,8 @@ int snd_dma_reserve_buf(struct snd_dma_buffer *dmab, unsigned int id)
{
struct snd_mem_list *mem;
- snd_assert(dmab, return -EINVAL);
+ if (WARN_ON(!dmab))
+ return -EINVAL;
mem = kmalloc(sizeof(*mem), GFP_KERNEL);
if (! mem)
return -ENOMEM;
@@ -431,7 +373,7 @@ static int snd_mem_proc_read(struct seq_file *seq, void *offset)
long pages = snd_allocated_pages >> (PAGE_SHIFT-12);
struct snd_mem_list *mem;
int devno;
- static char *types[] = { "UNKNOWN", "CONT", "DEV", "DEV-SG", "SBUS" };
+ static char *types[] = { "UNKNOWN", "CONT", "DEV", "DEV-SG" };
mutex_lock(&list_mutex);
seq_printf(seq, "pages : %li bytes (%li pages per %likB)\n",
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-21 08:59:08 +0000