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functions. We add the glue code that sets up a dma_ops structure with the xen_swiotlb_* functions. The code turns on xen_swiotlb flag when it detects it is running under Xen and it is either in privileged mode or the iommu=soft flag was passed in. It also disables the bare-metal SWIOTLB if the Xen-SWIOTLB has been enabled. Note: The Xen-SWIOTLB is only built when CONFIG_XEN is enabled. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Albert Herranz <albert_herranz@yahoo.es> Cc: Ian Campbell <Ian.Campbell@citrix.com>
15 lines
407 B
C
15 lines
407 B
C
#ifndef _ASM_X86_SWIOTLB_XEN_H
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#define _ASM_X86_SWIOTLB_XEN_H
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#ifdef CONFIG_SWIOTLB_XEN
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extern int xen_swiotlb;
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extern int __init pci_xen_swiotlb_detect(void);
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extern void __init pci_xen_swiotlb_init(void);
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#else
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#define xen_swiotlb (0)
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static inline int __init pci_xen_swiotlb_detect(void) { return 0; }
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static inline void __init pci_xen_swiotlb_init(void) { }
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#endif
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#endif /* _ASM_X86_SWIOTLB_XEN_H */
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