1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_XEN_PAGE_COHERENT_H
3 #define _ASM_X86_XEN_PAGE_COHERENT_H
4
5 #include <asm/page.h>
6 #include <linux/dma-mapping.h>
7
xen_alloc_coherent_pages(struct device * hwdev,size_t size,dma_addr_t * dma_handle,gfp_t flags,unsigned long attrs)8 static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
9 dma_addr_t *dma_handle, gfp_t flags,
10 unsigned long attrs)
11 {
12 void *vstart = (void*)__get_free_pages(flags, get_order(size));
13 *dma_handle = virt_to_phys(vstart);
14 return vstart;
15 }
16
xen_free_coherent_pages(struct device * hwdev,size_t size,void * cpu_addr,dma_addr_t dma_handle,unsigned long attrs)17 static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
18 void *cpu_addr, dma_addr_t dma_handle,
19 unsigned long attrs)
20 {
21 free_pages((unsigned long) cpu_addr, get_order(size));
22 }
23
24 #endif /* _ASM_X86_XEN_PAGE_COHERENT_H */
25