28 lines
746 B
C
28 lines
746 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <linux/dma-direct.h>
|
|
#include <linux/export.h>
|
|
|
|
/* Set this to 1 if there is a HW IOMMU in the system */
|
|
int iommu_detected __read_mostly;
|
|
|
|
const struct dma_map_ops *dma_ops;
|
|
EXPORT_SYMBOL(dma_ops);
|
|
|
|
void *arch_dma_alloc(struct device *dev, size_t size,
|
|
dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
|
|
{
|
|
return dma_direct_alloc_pages(dev, size, dma_handle, gfp, attrs);
|
|
}
|
|
|
|
void arch_dma_free(struct device *dev, size_t size, void *cpu_addr,
|
|
dma_addr_t dma_addr, unsigned long attrs)
|
|
{
|
|
dma_direct_free_pages(dev, size, cpu_addr, dma_addr, attrs);
|
|
}
|
|
|
|
long arch_dma_coherent_to_pfn(struct device *dev, void *cpu_addr,
|
|
dma_addr_t dma_addr)
|
|
{
|
|
return page_to_pfn(virt_to_page(cpu_addr));
|
|
}
|