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24 lines
678 B
24 lines
678 B
/* 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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