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68 lines
1.6 KiB
68 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* SVA library for IOMMU drivers |
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*/ |
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#ifndef _IOMMU_SVA_LIB_H |
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#define _IOMMU_SVA_LIB_H |
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#include <linux/ioasid.h> |
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#include <linux/mm_types.h> |
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int iommu_sva_alloc_pasid(struct mm_struct *mm, ioasid_t min, ioasid_t max); |
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void iommu_sva_free_pasid(struct mm_struct *mm); |
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struct mm_struct *iommu_sva_find(ioasid_t pasid); |
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/* I/O Page fault */ |
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struct device; |
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struct iommu_fault; |
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struct iopf_queue; |
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#ifdef CONFIG_IOMMU_SVA_LIB |
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int iommu_queue_iopf(struct iommu_fault *fault, void *cookie); |
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int iopf_queue_add_device(struct iopf_queue *queue, struct device *dev); |
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int iopf_queue_remove_device(struct iopf_queue *queue, |
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struct device *dev); |
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int iopf_queue_flush_dev(struct device *dev); |
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struct iopf_queue *iopf_queue_alloc(const char *name); |
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void iopf_queue_free(struct iopf_queue *queue); |
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int iopf_queue_discard_partial(struct iopf_queue *queue); |
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#else /* CONFIG_IOMMU_SVA_LIB */ |
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static inline int iommu_queue_iopf(struct iommu_fault *fault, void *cookie) |
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{ |
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return -ENODEV; |
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} |
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static inline int iopf_queue_add_device(struct iopf_queue *queue, |
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struct device *dev) |
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{ |
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return -ENODEV; |
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} |
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static inline int iopf_queue_remove_device(struct iopf_queue *queue, |
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struct device *dev) |
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{ |
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return -ENODEV; |
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} |
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static inline int iopf_queue_flush_dev(struct device *dev) |
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{ |
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return -ENODEV; |
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} |
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static inline struct iopf_queue *iopf_queue_alloc(const char *name) |
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{ |
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return NULL; |
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} |
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static inline void iopf_queue_free(struct iopf_queue *queue) |
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{ |
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} |
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static inline int iopf_queue_discard_partial(struct iopf_queue *queue) |
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{ |
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return -ENODEV; |
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} |
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#endif /* CONFIG_IOMMU_SVA_LIB */ |
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#endif /* _IOMMU_SVA_LIB_H */
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