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);
-
/*
*/
/* 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
-
-/*
- * Hacks
- */
-
-#if defined(__i386__)
-/*
- * A hack to allocate large buffers via dma_alloc_coherent()
- *
- * since dma_alloc_coherent always tries GFP_DMA when the requested
- * pci memory region is below 32bit, it happens quite often that even
- * 2 order of pages cannot be allocated.
- *
- * so in the following, we allocate at first without dma_mask, so that
- * allocation will be done without GFP_DMA. if the area doesn't match
- * with the requested region, then realloate with the original dma_mask
- * again.
- *
- * Really, we want to move this type of thing into dma_alloc_coherent()
- * so dma_mask doesn't have to be messed with.
- */
-
-static void *snd_dma_hack_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle,
- gfp_t flags)
-{
- void *ret;
- u64 dma_mask, coherent_dma_mask;
-
- if (dev == NULL || !dev->dma_mask)
- return dma_alloc_coherent(dev, size, dma_handle, flags);
- dma_mask = *dev->dma_mask;
- coherent_dma_mask = dev->coherent_dma_mask;
- *dev->dma_mask = 0xffffffff; /* do without masking */
- dev->coherent_dma_mask = 0xffffffff; /* do without masking */
- ret = dma_alloc_coherent(dev, size, dma_handle, flags);
- *dev->dma_mask = dma_mask; /* restore */
- dev->coherent_dma_mask = coherent_dma_mask; /* restore */
- if (ret) {
- /* obtained address is out of range? */
- if (((unsigned long)*dma_handle + size - 1) & ~dma_mask) {
- /* reallocate with the proper mask */
- dma_free_coherent(dev, size, ret, *dma_handle);
- ret = dma_alloc_coherent(dev, size, dma_handle, flags);
- }
- } else {
- /* wish to success now with the proper mask... */
- if (dma_mask != 0xffffffffUL) {
- /* allocation with GFP_ATOMIC to avoid the long stall */
- flags &= ~GFP_KERNEL;
- flags |= GFP_ATOMIC;
- ret = dma_alloc_coherent(dev, size, dma_handle, flags);
- }
- }
- return ret;
-}
-
-/* redefine dma_alloc_coherent for some architectures */
-#undef dma_alloc_coherent
-#define dma_alloc_coherent snd_dma_hack_alloc_coherent
-
-#endif /* arch */
-
/*
*
* Generic memory allocators
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)
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 */
int pg;
void *res;
- snd_assert(size > 0, return NULL);
- snd_assert(dma_addr != NULL, return NULL);
+ if (WARN_ON(!dma_addr))
+ return NULL;
pg = get_order(size);
res = sbus_alloc_consistent(sdev, PAGE_SIZE * (1 << pg), dma_addr);
if (res != NULL)
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;
{
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) {
if (err != -ENOMEM)
return err;
{
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) {
{
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;