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25 lines
678 B
25 lines
678 B
3 years ago
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_XEN_PAGE_COHERENT_H
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#define _ASM_X86_XEN_PAGE_COHERENT_H
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#include <asm/page.h>
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#include <linux/dma-mapping.h>
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static inline void *xen_alloc_coherent_pages(struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags,
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unsigned long attrs)
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{
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void *vstart = (void*)__get_free_pages(flags, get_order(size));
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*dma_handle = virt_to_phys(vstart);
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return vstart;
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}
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static inline void xen_free_coherent_pages(struct device *hwdev, size_t size,
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void *cpu_addr, dma_addr_t dma_handle,
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unsigned long attrs)
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{
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free_pages((unsigned long) cpu_addr, get_order(size));
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}
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#endif /* _ASM_X86_XEN_PAGE_COHERENT_H */
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