enetc4_debugfs.c

 1// SPDX-License-Identifier: GPL-2.0+
 2/* Copyright 2025 NXP */
 3
 4#include <linux/device.h>
 5#include <linux/debugfs.h>
 6#include <linux/seq_file.h>
 7#include <linux/string_choices.h>
 8
 9#include "enetc_pf.h"
10#include "enetc4_debugfs.h"
11
12static void enetc_show_si_mac_hash_filter(struct seq_file *s, int i)
13{
14	struct enetc_si *si = s->private;
15	struct enetc_hw *hw = &si->hw;
16	u32 hash_h, hash_l;
17
18	hash_l = enetc_port_rd(hw, ENETC4_PSIUMHFR0(i));
19	hash_h = enetc_port_rd(hw, ENETC4_PSIUMHFR1(i));
20	seq_printf(s, "SI %d unicast MAC hash filter: 0x%08x%08x\n",
21		   i, hash_h, hash_l);
22
23	hash_l = enetc_port_rd(hw, ENETC4_PSIMMHFR0(i));
24	hash_h = enetc_port_rd(hw, ENETC4_PSIMMHFR1(i));
25	seq_printf(s, "SI %d multicast MAC hash filter: 0x%08x%08x\n",
26		   i, hash_h, hash_l);
27}
28
29static int enetc_mac_filter_show(struct seq_file *s, void *data)
30{
31	struct enetc_si *si = s->private;
32	struct enetc_hw *hw = &si->hw;
33	struct maft_entry_data maft;
34	struct enetc_pf *pf;
35	int i, err, num_si;
36	u32 val;
37
38	pf = enetc_si_priv(si);
39	num_si = pf->caps.num_vsi + 1;
40
41	val = enetc_port_rd(hw, ENETC4_PSIPMMR);
42	for (i = 0; i < num_si; i++) {
43		seq_printf(s, "SI %d Unicast Promiscuous mode: %s\n", i,
44			   str_enabled_disabled(PSIPMMR_SI_MAC_UP(i) & val));
45		seq_printf(s, "SI %d Multicast Promiscuous mode: %s\n", i,
46			   str_enabled_disabled(PSIPMMR_SI_MAC_MP(i) & val));
47	}
48
49	/* MAC hash filter table */
50	for (i = 0; i < num_si; i++)
51		enetc_show_si_mac_hash_filter(s, i);
52
53	if (!pf->num_mfe)
54		return 0;
55
56	/* MAC address filter table */
57	seq_puts(s, "MAC address filter table\n");
58	for (i = 0; i < pf->num_mfe; i++) {
59		memset(&maft, 0, sizeof(maft));
60		err = ntmp_maft_query_entry(&si->ntmp_user, i, &maft);
61		if (err)
62			return err;
63
64		seq_printf(s, "Entry %d, MAC: %pM, SI bitmap: 0x%04x\n", i,
65			   maft.keye.mac_addr, le16_to_cpu(maft.cfge.si_bitmap));
66	}
67
68	return 0;
69}
70DEFINE_SHOW_ATTRIBUTE(enetc_mac_filter);
71
72void enetc_create_debugfs(struct enetc_si *si)
73{
74	struct net_device *ndev = si->ndev;
75	struct dentry *root;
76
77	root = debugfs_create_dir(netdev_name(ndev), NULL);
78	if (IS_ERR(root))
79		return;
80
81	si->debugfs_root = root;
82
83	debugfs_create_file("mac_filter", 0444, root, si, &enetc_mac_filter_fops);
84}
85
86void enetc_remove_debugfs(struct enetc_si *si)
87{
88	debugfs_remove(si->debugfs_root);
89	si->debugfs_root = NULL;
90}