1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
|
// SPDX-License-Identifier: GPL-2.0
/*
* AMD IOMMU driver
*
* Copyright (C) 2018 Advanced Micro Devices, Inc.
*
* Author: Gary R Hook <gary.hook@amd.com>
*/
#include <linux/debugfs.h>
#include <linux/pci.h>
#include "amd_iommu.h"
static struct dentry *amd_iommu_debugfs;
static DEFINE_MUTEX(amd_iommu_debugfs_lock);
#define MAX_NAME_LEN 20
void amd_iommu_debugfs_setup(struct amd_iommu *iommu)
{
char name[MAX_NAME_LEN + 1];
mutex_lock(&amd_iommu_debugfs_lock);
if (!amd_iommu_debugfs)
amd_iommu_debugfs = debugfs_create_dir("amd",
iommu_debugfs_dir);
mutex_unlock(&amd_iommu_debugfs_lock);
snprintf(name, MAX_NAME_LEN, "iommu%02d", iommu->index);
iommu->debugfs = debugfs_create_dir(name, amd_iommu_debugfs);
}
|
