/* 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)); } static inline void xen_dma_map_page(struct device *hwdev, struct page *page, dma_addr_t dev_addr, unsigned long offset, size_t size, enum dma_data_direction dir, unsigned long attrs) { } static inline void xen_dma_unmap_page(struct device *hwdev, dma_addr_t handle, size_t size, enum dma_data_direction dir, unsigned long attrs) { } static inline void xen_dma_sync_single_for_cpu(struct device *hwdev, dma_addr_t handle, size_t size, enum dma_data_direction dir) { } static inline void xen_dma_sync_single_for_device(struct device *hwdev, dma_addr_t handle, size_t size, enum dma_data_direction dir) { } #endif /* _ASM_X86_XEN_PAGE_COHERENT_H */
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cpuid.h | File | 4.27 KB | 0644 |
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events.h | File | 806 B | 0644 |
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hypercall.h | File | 17.11 KB | 0644 |
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hypervisor.h | File | 2.23 KB | 0644 |
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interface.h | File | 13.21 KB | 0644 |
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interface_32.h | File | 2.92 KB | 0644 |
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interface_64.h | File | 4.56 KB | 0644 |
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page-coherent.h | File | 1.28 KB | 0644 |
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page.h | File | 9.33 KB | 0644 |
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pci.h | File | 2.24 KB | 0644 |
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swiotlb-xen.h | File | 559 B | 0644 |
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trace_types.h | File | 480 B | 0644 |
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