1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *  FUJITSU Extended Socket Network Device driver
4 *  Copyright (c) 2015-2016 FUJITSU LIMITED
5 */
6
7/* debugfs support for fjes driver */
8
9#ifdef CONFIG_DEBUG_FS
10
11#include <linux/debugfs.h>
12#include <linux/seq_file.h>
13#include <linux/platform_device.h>
14
15#include "fjes.h"
16
17static struct dentry *fjes_debug_root;
18
19static const char * const ep_status_string[] = {
20	"unshared",
21	"shared",
22	"waiting",
23	"complete",
24};
25
26static int fjes_dbg_status_show(struct seq_file *m, void *v)
27{
28	struct fjes_adapter *adapter = m->private;
29	struct fjes_hw *hw = &adapter->hw;
30	int max_epid = hw->max_epid;
31	int my_epid = hw->my_epid;
32	int epidx;
33
34	seq_puts(m, "EPID\tSTATUS           SAME_ZONE        CONNECTED\n");
35	for (epidx = 0; epidx < max_epid; epidx++) {
36		if (epidx == my_epid) {
37			seq_printf(m, "ep%d\t%-16c %-16c %-16c\n",
38				   epidx, '-', '-', '-');
39		} else {
40			seq_printf(m, "ep%d\t%-16s %-16c %-16c\n",
41				   epidx,
42				   ep_status_string[fjes_hw_get_partner_ep_status(hw, epidx)],
43				   fjes_hw_epid_is_same_zone(hw, epidx) ? 'Y' : 'N',
44				   fjes_hw_epid_is_shared(hw->hw_info.share, epidx) ? 'Y' : 'N');
45		}
46	}
47
48	return 0;
49}
50DEFINE_SHOW_ATTRIBUTE(fjes_dbg_status);
51
52void fjes_dbg_adapter_init(struct fjes_adapter *adapter)
53{
54	const char *name = dev_name(&adapter->plat_dev->dev);
55
56	adapter->dbg_adapter = debugfs_create_dir(name, fjes_debug_root);
57
58	debugfs_create_file("status", 0444, adapter->dbg_adapter, adapter,
59			    &fjes_dbg_status_fops);
60}
61
62void fjes_dbg_adapter_exit(struct fjes_adapter *adapter)
63{
64	debugfs_remove_recursive(adapter->dbg_adapter);
65	adapter->dbg_adapter = NULL;
66}
67
68void fjes_dbg_init(void)
69{
70	fjes_debug_root = debugfs_create_dir(fjes_driver_name, NULL);
71}
72
73void fjes_dbg_exit(void)
74{
75	debugfs_remove_recursive(fjes_debug_root);
76	fjes_debug_root = NULL;
77}
78
79#endif /* CONFIG_DEBUG_FS */
80