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/* SPDX-License-Identifier: GPL-2.0 */
#include <common.h>
#include <xfuncs.h>
#include <asm/dma.h>
#include <malloc.h>
static void __dma_flush_range(dma_addr_t start, dma_addr_t end)
{
}
static void *__dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
{
void *ret;
ret = xmemalign(PAGE_SIZE, size);
memset(ret, 0, size);
if (dma_handle)
*dma_handle = (dma_addr_t)ret;
return ret;
}
static void __dma_free_coherent(void *vaddr, dma_addr_t dma_handle, size_t size)
{
free(vaddr);
}
static const struct dma_ops coherent_dma_ops = {
.alloc_coherent = __dma_alloc_coherent,
.free_coherent = __dma_free_coherent,
.flush_range = __dma_flush_range,
.inv_range = __dma_flush_range,
};
static const struct dma_ops *dma_ops = &coherent_dma_ops;
void *dma_alloc_coherent(size_t size, dma_addr_t *dma_handle)
{
return dma_ops->alloc_coherent(size, dma_handle);
}
void dma_free_coherent(void *vaddr, dma_addr_t dma_handle, size_t size)
{
dma_ops->free_coherent(vaddr, dma_handle, size);
}
void dma_set_ops(const struct dma_ops *ops)
{
dma_ops = ops;
}
void arch_sync_dma_for_cpu(void *vaddr, size_t size,
enum dma_data_direction dir)
{
unsigned long start = (unsigned long)vaddr;
unsigned long end = start + size;
if (dir != DMA_TO_DEVICE)
dma_ops->inv_range(start, end);
}
void arch_sync_dma_for_device(void *vaddr, size_t size,
enum dma_data_direction dir)
{
unsigned long start = (unsigned long)vaddr;
unsigned long end = start + size;
if (dir == DMA_FROM_DEVICE)
dma_ops->inv_range(start, end);
else
dma_ops->flush_range(start, end);
}
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