tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
iommu/core: Define iommu_ops and register_iommu only with CONFIG_IOMMU_API
This makes it impossible to compile an iommu driver into the
kernel without selecting CONFIG_IOMMU_API.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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include/linux/iommu.h
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include/linux/iommu.h
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#define IOMMU_CAP_CACHE_COHERENCY 0x1
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#define IOMMU_CAP_INTR_REMAP 0x2 /* isolates device intrs */
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#ifdef CONFIG_IOMMU_API
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struct iommu_ops {
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int (*domain_init)(struct iommu_domain *domain);
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void (*domain_destroy)(struct iommu_domain *domain);
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int (*domain_has_cap)(struct iommu_domain *domain,
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unsigned long cap);
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};
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#ifdef CONFIG_IOMMU_API
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extern void register_iommu(struct iommu_ops *ops);
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extern bool iommu_found(void);
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#else /* CONFIG_IOMMU_API */
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static inline void register_iommu(struct iommu_ops *ops)
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{
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}
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struct iommu_ops {};
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static inline bool iommu_found(void)
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{