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