1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (c) 2023 Hisilicon Limited.
4 */
5
6#include <linux/debugfs.h>
7#include <linux/device.h>
8#include <linux/pci.h>
9
10#include "hns_roce_device.h"
11
12static struct dentry *hns_roce_dbgfs_root;
13
14static int hns_debugfs_seqfile_open(struct inode *inode, struct file *f)
15{
16 struct hns_debugfs_seqfile *seqfile = inode->i_private;
17
18 return single_open(f, seqfile->read, seqfile->data);
19}
20
21static const struct file_operations hns_debugfs_seqfile_fops = {
22 .owner = THIS_MODULE,
23 .open = hns_debugfs_seqfile_open,
24 .release = single_release,
25 .read = seq_read,
26 .llseek = seq_lseek
27};
28
29static void init_debugfs_seqfile(struct hns_debugfs_seqfile *seq,
30 const char *name, struct dentry *parent,
31 int (*read_fn)(struct seq_file *, void *),
32 void *data)
33{
34 debugfs_create_file(name, 0400, parent, seq, &hns_debugfs_seqfile_fops);
35
36 seq->read = read_fn;
37 seq->data = data;
38}
39
40static const char * const sw_stat_info[] = {
41 [HNS_ROCE_DFX_AEQE_CNT] = "aeqe",
42 [HNS_ROCE_DFX_CEQE_CNT] = "ceqe",
43 [HNS_ROCE_DFX_CMDS_CNT] = "cmds",
44 [HNS_ROCE_DFX_CMDS_ERR_CNT] = "cmds_err",
45 [HNS_ROCE_DFX_MBX_POSTED_CNT] = "posted_mbx",
46 [HNS_ROCE_DFX_MBX_POLLED_CNT] = "polled_mbx",
47 [HNS_ROCE_DFX_MBX_EVENT_CNT] = "mbx_event",
48 [HNS_ROCE_DFX_QP_CREATE_ERR_CNT] = "qp_create_err",
49 [HNS_ROCE_DFX_QP_MODIFY_ERR_CNT] = "qp_modify_err",
50 [HNS_ROCE_DFX_CQ_CREATE_ERR_CNT] = "cq_create_err",
51 [HNS_ROCE_DFX_CQ_MODIFY_ERR_CNT] = "cq_modify_err",
52 [HNS_ROCE_DFX_SRQ_CREATE_ERR_CNT] = "srq_create_err",
53 [HNS_ROCE_DFX_SRQ_MODIFY_ERR_CNT] = "srq_modify_err",
54 [HNS_ROCE_DFX_XRCD_ALLOC_ERR_CNT] = "xrcd_alloc_err",
55 [HNS_ROCE_DFX_MR_REG_ERR_CNT] = "mr_reg_err",
56 [HNS_ROCE_DFX_MR_REREG_ERR_CNT] = "mr_rereg_err",
57 [HNS_ROCE_DFX_AH_CREATE_ERR_CNT] = "ah_create_err",
58 [HNS_ROCE_DFX_MMAP_ERR_CNT] = "mmap_err",
59 [HNS_ROCE_DFX_UCTX_ALLOC_ERR_CNT] = "uctx_alloc_err",
60};
61
62static int sw_stat_debugfs_show(struct seq_file *file, void *offset)
63{
64 struct hns_roce_dev *hr_dev = file->private;
65 int i;
66
67 for (i = 0; i < HNS_ROCE_DFX_CNT_TOTAL; i++)
68 seq_printf(m: file, fmt: "%-20s --- %lld\n", sw_stat_info[i],
69 atomic64_read(v: &hr_dev->dfx_cnt[i]));
70
71 return 0;
72}
73
74static void create_sw_stat_debugfs(struct hns_roce_dev *hr_dev,
75 struct dentry *parent)
76{
77 struct hns_sw_stat_debugfs *dbgfs = &hr_dev->dbgfs.sw_stat_root;
78
79 dbgfs->root = debugfs_create_dir(name: "sw_stat", parent);
80
81 init_debugfs_seqfile(seq: &dbgfs->sw_stat, name: "sw_stat", parent: dbgfs->root,
82 read_fn: sw_stat_debugfs_show, data: hr_dev);
83}
84
85/* debugfs for device */
86void hns_roce_register_debugfs(struct hns_roce_dev *hr_dev)
87{
88 struct hns_roce_dev_debugfs *dbgfs = &hr_dev->dbgfs;
89
90 dbgfs->root = debugfs_create_dir(name: pci_name(pdev: hr_dev->pci_dev),
91 parent: hns_roce_dbgfs_root);
92
93 create_sw_stat_debugfs(hr_dev, parent: dbgfs->root);
94}
95
96void hns_roce_unregister_debugfs(struct hns_roce_dev *hr_dev)
97{
98 debugfs_remove_recursive(dentry: hr_dev->dbgfs.root);
99}
100
101/* debugfs for hns module */
102void hns_roce_init_debugfs(void)
103{
104 hns_roce_dbgfs_root = debugfs_create_dir(name: "hns_roce", NULL);
105}
106
107void hns_roce_cleanup_debugfs(void)
108{
109 debugfs_remove_recursive(dentry: hns_roce_dbgfs_root);
110 hns_roce_dbgfs_root = NULL;
111}
112

source code of linux/drivers/infiniband/hw/hns/hns_roce_debugfs.c