1// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
2/* Copyright 2015 Freescale Semiconductor Inc.
3 * Copyright 2018-2019 NXP
4 */
5#include <linux/module.h>
6#include <linux/debugfs.h>
7#include "dpaa2-eth.h"
8#include "dpaa2-eth-debugfs.h"
9
10#define DPAA2_ETH_DBG_ROOT "dpaa2-eth"
11
12static struct dentry *dpaa2_dbg_root;
13
14static int dpaa2_dbg_cpu_show(struct seq_file *file, void *offset)
15{
16	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
17	struct rtnl_link_stats64 *stats;
18	struct dpaa2_eth_drv_stats *extras;
19	int i;
20
21	seq_printf(file, "Per-CPU stats for %s\n", priv->net_dev->name);
22	seq_printf(file, "%s%16s%16s%16s%16s%16s%16s%16s%16s%16s\n",
23		   "CPU", "Rx", "Rx Err", "Rx SG", "Tx", "Tx Err", "Tx conf",
24		   "Tx SG", "Tx converted to SG", "Enq busy");
25
26	for_each_online_cpu(i) {
27		stats = per_cpu_ptr(priv->percpu_stats, i);
28		extras = per_cpu_ptr(priv->percpu_extras, i);
29		seq_printf(file, "%3d%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu\n",
30			   i,
31			   stats->rx_packets,
32			   stats->rx_errors,
33			   extras->rx_sg_frames,
34			   stats->tx_packets,
35			   stats->tx_errors,
36			   extras->tx_conf_frames,
37			   extras->tx_sg_frames,
38			   extras->tx_converted_sg_frames,
39			   extras->tx_portal_busy);
40	}
41
42	return 0;
43}
44
45DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_cpu);
46
47static char *fq_type_to_str(struct dpaa2_eth_fq *fq)
48{
49	switch (fq->type) {
50	case DPAA2_RX_FQ:
51		return "Rx";
52	case DPAA2_TX_CONF_FQ:
53		return "Tx conf";
54	default:
55		return "N/A";
56	}
57}
58
59static int dpaa2_dbg_fqs_show(struct seq_file *file, void *offset)
60{
61	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
62	struct dpaa2_eth_fq *fq;
63	u32 fcnt, bcnt;
64	int i, err;
65
66	seq_printf(file, "FQ stats for %s:\n", priv->net_dev->name);
67	seq_printf(file, "%s%16s%16s%16s%16s%16s\n",
68		   "VFQID", "CPU", "TC", "Type", "Frames", "Pending frames");
69
70	for (i = 0; i <  priv->num_fqs; i++) {
71		fq = &priv->fq[i];
72		err = dpaa2_io_query_fq_count(NULL, fq->fqid, &fcnt, &bcnt);
73		if (err)
74			fcnt = 0;
75
76		/* Skip FQs with no traffic */
77		if (!fq->stats.frames && !fcnt)
78			continue;
79
80		seq_printf(file, "%5d%16d%16d%16s%16llu%16u\n",
81			   fq->fqid,
82			   fq->target_cpu,
83			   fq->tc,
84			   fq_type_to_str(fq),
85			   fq->stats.frames,
86			   fcnt);
87	}
88
89	return 0;
90}
91
92DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_fqs);
93
94static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset)
95{
96	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
97	struct dpaa2_eth_channel *ch;
98	int i;
99
100	seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name);
101	seq_printf(file, "%s  %5s%16s%16s%16s%16s%16s%16s\n",
102		   "IDX", "CHID", "CPU", "Deq busy", "Frames", "CDANs",
103		   "Avg Frm/CDAN", "Buf count");
104
105	for (i = 0; i < priv->num_channels; i++) {
106		ch = priv->channel[i];
107		seq_printf(file, "%3s%d%6d%16d%16llu%16llu%16llu%16llu%16d\n",
108			   "CH#", i, ch->ch_id,
109			   ch->nctx.desired_cpu,
110			   ch->stats.dequeue_portal_busy,
111			   ch->stats.frames,
112			   ch->stats.cdan,
113			   div64_u64(ch->stats.frames, ch->stats.cdan),
114			   ch->buf_count);
115	}
116
117	return 0;
118}
119
120DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_ch);
121
122static int dpaa2_dbg_bp_show(struct seq_file *file, void *offset)
123{
124	struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private;
125	int i, j, num_queues, buf_cnt;
126	struct dpaa2_eth_bp *bp;
127	char ch_name[10];
128	int err;
129
130	/* Print out the header */
131	seq_printf(file, "Buffer pool info for %s:\n", priv->net_dev->name);
132	seq_printf(file, "%s  %10s%15s", "IDX", "BPID", "Buf count");
133	num_queues = dpaa2_eth_queue_count(priv);
134	for (i = 0; i < num_queues; i++) {
135		snprintf(ch_name, sizeof(ch_name), "CH#%d", i);
136		seq_printf(file, "%10s", ch_name);
137	}
138	seq_printf(file, "\n");
139
140	/* For each buffer pool, print out its BPID, the number of buffers in
141	 * that buffer pool and the channels which are using it.
142	 */
143	for (i = 0; i < priv->num_bps; i++) {
144		bp = priv->bp[i];
145
146		err = dpaa2_io_query_bp_count(NULL, bp->bpid, &buf_cnt);
147		if (err) {
148			netdev_warn(priv->net_dev, "Buffer count query error %d\n", err);
149			return err;
150		}
151
152		seq_printf(file, "%3s%d%10d%15d", "BP#", i, bp->bpid, buf_cnt);
153		for (j = 0; j < num_queues; j++) {
154			if (priv->channel[j]->bp == bp)
155				seq_printf(file, "%10s", "x");
156			else
157				seq_printf(file, "%10s", "");
158		}
159		seq_printf(file, "\n");
160	}
161
162	return 0;
163}
164
165DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_bp);
166
167void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
168{
169	struct fsl_mc_device *dpni_dev;
170	struct dentry *dir;
171	char name[10];
172
173	/* Create a directory for the interface */
174	dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent);
175	snprintf(name, 10, "dpni.%d", dpni_dev->obj_desc.id);
176	dir = debugfs_create_dir(name, dpaa2_dbg_root);
177	priv->dbg.dir = dir;
178
179	/* per-cpu stats file */
180	debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_fops);
181
182	/* per-fq stats file */
183	debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fqs_fops);
184
185	/* per-fq stats file */
186	debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_fops);
187
188	/* per buffer pool stats file */
189	debugfs_create_file("bp_stats", 0444, dir, priv, &dpaa2_dbg_bp_fops);
190
191}
192
193void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
194{
195	debugfs_remove_recursive(priv->dbg.dir);
196}
197
198void dpaa2_eth_dbg_init(void)
199{
200	dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);
201	pr_debug("DPAA2-ETH: debugfs created\n");
202}
203
204void dpaa2_eth_dbg_exit(void)
205{
206	debugfs_remove(dpaa2_dbg_root);
207}
208