77 lines
2.7 KiB
C
Executable File
77 lines
2.7 KiB
C
Executable File
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2015-2021, The Linux Foundation. All rights reserved.
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* Copyright (c) 2022-2023, Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __DRIVERS_IOMMU_QCOM_IOMMU_DEBUG_H__
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#define __DRIVERS_IOMMU_QCOM_IOMMU_DEBUG_H__
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#include <linux/device.h>
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#include <linux/debugfs.h>
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#include <linux/iommu.h>
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#include <linux/completion.h>
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#include <linux/mutex.h>
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#define MSI_IOVA_BASE 0x8000000
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#define MSI_IOVA_LENGTH 0x100000
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#define ARM_SMMU_SMR_ID GENMASK(15, 0)
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struct iommu_debug_device {
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struct device *self;
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u32 nr_children;
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char *buffer;
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struct dentry *root_dir;
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/* for usecase under test */
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struct device *test_dev;
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struct iommu_domain *domain;
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u32 usecase_nr;
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bool fastmap_usecase;
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/* Protects test_dev */
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struct mutex state_lock;
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/* For waiting for child probe to complete */
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struct completion probe_wait;
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/* Used for atos */
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u64 iova;
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/* number of iterations */
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u32 nr_iters;
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};
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struct device *iommu_debug_usecase_reset(struct iommu_debug_device *ddev);
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struct device *iommu_debug_switch_usecase(struct iommu_debug_device *ddev, u32 usecase_nr);
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int iommu_debug_check_mapping_flags(struct device *dev, dma_addr_t iova, size_t size,
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phys_addr_t expected_pa, u32 flags);
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#define iommu_debug_check_mapping(d, i, s, p) \
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iommu_debug_check_mapping_flags(d, i, s, p, 0)
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/* Only checks a single page */
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#define iommu_debug_check_mapping_fast(d, i, s, p) \
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iommu_debug_check_mapping_flags(d, i, PAGE_SIZE, p, 0)
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int iommu_debug_check_mapping_sg_flags(struct device *dev, struct scatterlist *sgl,
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unsigned int pgoffset, unsigned int dma_nents,
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unsigned int nents, u32 flags);
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#define iommu_debug_check_mapping_sg(d, s, o, e1, e2) \
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iommu_debug_check_mapping_sg_flags(d, s, o, e1, e2, 0)
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/* Only checks the last page of first sgl */
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static inline int iommu_debug_check_mapping_sg_fast(struct device *dev, struct scatterlist *sgl,
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unsigned int pgoffset, unsigned int dma_nents,
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unsigned int nents)
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{
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pgoffset = PAGE_ALIGN(sgl->offset + sgl->length) >> PAGE_SHIFT;
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return iommu_debug_check_mapping_sg_flags(dev, sgl, pgoffset - 1, dma_nents, 1, 0);
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}
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extern const struct file_operations iommu_debug_functional_arm_dma_api_fops;
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extern const struct file_operations iommu_debug_functional_fast_dma_api_fops;
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extern const struct file_operations iommu_debug_atos_fops;
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extern const struct file_operations iommu_debug_map_fops;
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extern const struct file_operations iommu_debug_unmap_fops;
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extern const struct file_operations iommu_debug_dma_map_fops;
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extern const struct file_operations iommu_debug_dma_unmap_fops;
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extern const struct file_operations iommu_debug_test_virt_addr_fops;
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extern const struct file_operations iommu_debug_profiling_fops;
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#endif
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