Contributors: 3
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Stefano Stabellini |
204 |
95.77% |
3 |
60.00% |
| Krzysztof Kozlowski |
8 |
3.76% |
1 |
20.00% |
| Greg Kroah-Hartman |
1 |
0.47% |
1 |
20.00% |
| Total |
213 |
|
5 |
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_XEN_PAGE_COHERENT_H
#define _ASM_X86_XEN_PAGE_COHERENT_H
#include <asm/page.h>
#include <linux/dma-mapping.h>
static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags,
unsigned long attrs)
{
void *vstart = (void*)__get_free_pages(flags, get_order(size));
*dma_handle = virt_to_phys(vstart);
return vstart;
}
static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
void *cpu_addr, dma_addr_t dma_handle,
unsigned long attrs)
{
free_pages((unsigned long) cpu_addr, get_order(size));
}
static inline void xen_dma_map_page(struct device *hwdev, struct page *page,
dma_addr_t dev_addr, unsigned long offset, size_t size,
enum dma_data_direction dir, unsigned long attrs) { }
static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle,
size_t size, enum dma_data_direction dir,
unsigned long attrs) { }
static inline void xen_dma_sync_single_for_cpu(struct device *hwdev,
dma_addr_t handle, size_t size, enum dma_data_direction dir) { }
static inline void xen_dma_sync_single_for_device(struct device *hwdev,
dma_addr_t handle, size_t size, enum dma_data_direction dir) { }
#endif /* _ASM_X86_XEN_PAGE_COHERENT_H */