void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
{
void *ret;
ret = (void *)__alloc_dma_pages(get_pages(size));
if (ret) {
memset(ret, 0, size);
*dma_handle = virt_to_phys(ret);
}
return ret;
}
static void *bfin_dma_alloc(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
{
void *ret;
ret = (void *)__alloc_dma_pages(get_pages(size));
if (ret) {
memset(ret, 0, size);
*dma_handle = virt_to_phys(ret);
}
return ret;
}
/*
* Allocate DMA coherent memory space and return both the kernel
* virtual and DMA address for that space.
*/
void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
gfp_t gfp, struct dma_attrs *attrs)
{
u32 paddr;
int order;
if (!dma_size || !size)
return NULL;
order = get_count_order(((size - 1) >> PAGE_SHIFT) + 1);
paddr = __alloc_dma_pages(order);
if (handle)
*handle = paddr;
if (!paddr)
return NULL;
return phys_to_virt(paddr);
}
/*
* Allocate DMA coherent memory space and return both the kernel
* virtual and DMA address for that space.
*/
void *arch_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
gfp_t gfp, unsigned long attrs)
{
void *ret;
u32 paddr;
int order;
if (!dma_size || !size)
return NULL;
order = get_count_order(((size - 1) >> PAGE_SHIFT) + 1);
paddr = __alloc_dma_pages(order);
if (handle)
*handle = paddr;
if (!paddr)
return NULL;
ret = phys_to_virt(paddr);
memset(ret, 0, 1 << order);
return ret;
}
