cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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iommu-sva-lib.h (1587B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2/*
      3 * SVA library for IOMMU drivers
      4 */
      5#ifndef _IOMMU_SVA_LIB_H
      6#define _IOMMU_SVA_LIB_H
      7
      8#include <linux/ioasid.h>
      9#include <linux/mm_types.h>
     10
     11int iommu_sva_alloc_pasid(struct mm_struct *mm, ioasid_t min, ioasid_t max);
     12struct mm_struct *iommu_sva_find(ioasid_t pasid);
     13
     14/* I/O Page fault */
     15struct device;
     16struct iommu_fault;
     17struct iopf_queue;
     18
     19#ifdef CONFIG_IOMMU_SVA
     20int iommu_queue_iopf(struct iommu_fault *fault, void *cookie);
     21
     22int iopf_queue_add_device(struct iopf_queue *queue, struct device *dev);
     23int iopf_queue_remove_device(struct iopf_queue *queue,
     24			     struct device *dev);
     25int iopf_queue_flush_dev(struct device *dev);
     26struct iopf_queue *iopf_queue_alloc(const char *name);
     27void iopf_queue_free(struct iopf_queue *queue);
     28int iopf_queue_discard_partial(struct iopf_queue *queue);
     29
     30#else /* CONFIG_IOMMU_SVA */
     31static inline int iommu_queue_iopf(struct iommu_fault *fault, void *cookie)
     32{
     33	return -ENODEV;
     34}
     35
     36static inline int iopf_queue_add_device(struct iopf_queue *queue,
     37					struct device *dev)
     38{
     39	return -ENODEV;
     40}
     41
     42static inline int iopf_queue_remove_device(struct iopf_queue *queue,
     43					   struct device *dev)
     44{
     45	return -ENODEV;
     46}
     47
     48static inline int iopf_queue_flush_dev(struct device *dev)
     49{
     50	return -ENODEV;
     51}
     52
     53static inline struct iopf_queue *iopf_queue_alloc(const char *name)
     54{
     55	return NULL;
     56}
     57
     58static inline void iopf_queue_free(struct iopf_queue *queue)
     59{
     60}
     61
     62static inline int iopf_queue_discard_partial(struct iopf_queue *queue)
     63{
     64	return -ENODEV;
     65}
     66#endif /* CONFIG_IOMMU_SVA */
     67#endif /* _IOMMU_SVA_LIB_H */