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: / lib / modules / 5.15.0-153-generic / build / arch / x86 / include / asm / xen /

Filename : page-coherent.h

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/* 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));
}

#endif /* _ASM_X86_XEN_PAGE_COHERENT_H */