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-rw-r--r--include/sound/memalloc.h18
1 files changed, 15 insertions, 3 deletions
diff --git a/include/sound/memalloc.h b/include/sound/memalloc.h
index ae2921d9ddcc..7ccce94a5255 100644
--- a/include/sound/memalloc.h
+++ b/include/sound/memalloc.h
@@ -37,7 +37,6 @@ struct snd_dma_device {
#ifndef snd_dma_pci_data
#define snd_dma_pci_data(pci) (&(pci)->dev)
#define snd_dma_isa_data() NULL
-#define snd_dma_sbus_data(sbus) ((struct device *)(sbus))
#define snd_dma_continuous_data(x) ((struct device *)(unsigned long)(x))
#endif
@@ -49,7 +48,6 @@ struct snd_dma_device {
#define SNDRV_DMA_TYPE_CONTINUOUS 1 /* continuous no-DMA memory */
#define SNDRV_DMA_TYPE_DEV 2 /* generic device continuous */
#define SNDRV_DMA_TYPE_DEV_SG 3 /* generic device SG-buffer */
-#define SNDRV_DMA_TYPE_SBUS 4 /* SBUS continuous */
/*
* info for buffer allocation
@@ -65,6 +63,11 @@ struct snd_dma_buffer {
/*
* Scatter-Gather generic device pages
*/
+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);
+
struct snd_sg_page {
void *buf;
dma_addr_t addr;
@@ -92,9 +95,18 @@ static inline unsigned int snd_sgbuf_aligned_pages(size_t size)
*/
static inline dma_addr_t snd_sgbuf_get_addr(struct snd_sg_buf *sgbuf, size_t offset)
{
- return sgbuf->table[offset >> PAGE_SHIFT].addr + offset % PAGE_SIZE;
+ dma_addr_t addr = sgbuf->table[offset >> PAGE_SHIFT].addr;
+ addr &= PAGE_MASK;
+ return addr + offset % PAGE_SIZE;
}
+/*
+ * return the virtual address at the corresponding offset
+ */
+static inline void *snd_sgbuf_get_ptr(struct snd_sg_buf *sgbuf, size_t offset)
+{
+ return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE;
+}
/* allocate/release a buffer */
int snd_dma_alloc_pages(int type, struct device *dev, size_t size,