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32 lines
746 B
32 lines
746 B
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* AMD IOMMU driver |
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* |
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* Copyright (C) 2018 Advanced Micro Devices, Inc. |
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* |
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* Author: Gary R Hook <[email protected]> |
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*/ |
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#include <linux/debugfs.h> |
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#include <linux/pci.h> |
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#include "amd_iommu.h" |
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static struct dentry *amd_iommu_debugfs; |
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static DEFINE_MUTEX(amd_iommu_debugfs_lock); |
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#define MAX_NAME_LEN 20 |
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void amd_iommu_debugfs_setup(struct amd_iommu *iommu) |
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{ |
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char name[MAX_NAME_LEN + 1]; |
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mutex_lock(&amd_iommu_debugfs_lock); |
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if (!amd_iommu_debugfs) |
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amd_iommu_debugfs = debugfs_create_dir("amd", |
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iommu_debugfs_dir); |
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mutex_unlock(&amd_iommu_debugfs_lock); |
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snprintf(name, MAX_NAME_LEN, "iommu%02d", iommu->index); |
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iommu->debugfs = debugfs_create_dir(name, amd_iommu_debugfs); |
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}
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