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
12 static struct dentry *dpaa2_dbg_root;
13
dpaa2_dbg_cpu_show(struct seq_file * file,void * offset)14 static 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
45 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_cpu);
46
fq_type_to_str(struct dpaa2_eth_fq * fq)47 static 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
dpaa2_dbg_fqs_show(struct seq_file * file,void * offset)59 static 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
92 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_fqs);
93
dpaa2_dbg_ch_show(struct seq_file * file,void * offset)94 static 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
120 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_ch);
121
dpaa2_dbg_bp_show(struct seq_file * file,void * offset)122 static 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
165 DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_bp);
166
dpaa2_dbg_add(struct dpaa2_eth_priv * priv)167 void 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
dpaa2_dbg_remove(struct dpaa2_eth_priv * priv)193 void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
194 {
195 debugfs_remove_recursive(priv->dbg.dir);
196 }
197
dpaa2_eth_dbg_init(void)198 void 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
dpaa2_eth_dbg_exit(void)204 void dpaa2_eth_dbg_exit(void)
205 {
206 debugfs_remove(dpaa2_dbg_root);
207 }
208