18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_X86_XEN_PAGE_COHERENT_H 38c2ecf20Sopenharmony_ci#define _ASM_X86_XEN_PAGE_COHERENT_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <asm/page.h> 68c2ecf20Sopenharmony_ci#include <linux/dma-mapping.h> 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_cistatic inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size, 98c2ecf20Sopenharmony_ci dma_addr_t *dma_handle, gfp_t flags, 108c2ecf20Sopenharmony_ci unsigned long attrs) 118c2ecf20Sopenharmony_ci{ 128c2ecf20Sopenharmony_ci void *vstart = (void*)__get_free_pages(flags, get_order(size)); 138c2ecf20Sopenharmony_ci *dma_handle = virt_to_phys(vstart); 148c2ecf20Sopenharmony_ci return vstart; 158c2ecf20Sopenharmony_ci} 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_cistatic inline void xen_free_coherent_pages(struct device *hwdev, size_t size, 188c2ecf20Sopenharmony_ci void *cpu_addr, dma_addr_t dma_handle, 198c2ecf20Sopenharmony_ci unsigned long attrs) 208c2ecf20Sopenharmony_ci{ 218c2ecf20Sopenharmony_ci free_pages((unsigned long) cpu_addr, get_order(size)); 228c2ecf20Sopenharmony_ci} 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ci#endif /* _ASM_X86_XEN_PAGE_COHERENT_H */ 25