LXR linux/arch/x86/include/asm/xen/page-coherent.h

   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
   8static 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
  17static 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