drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c

   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
  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
  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
  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
  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%16s%16s%16s%16s%16s%16s\n",
 102                    "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, "%4d%16d%16llu%16llu%16llu%16llu%16d\n",
 108                            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
 122 void dpaa2_dbg_add(struct dpaa2_eth_priv *priv)
 123 {
 124         struct dentry *dir;
 125
 126         /* Create a directory for the interface */
 127         dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root);
 128         priv->dbg.dir = dir;
 129
 130         /* per-cpu stats file */
 131         debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_fops);
 132
 133         /* per-fq stats file */
 134         debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fqs_fops);
 135
 136         /* per-fq stats file */
 137         debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_fops);
 138 }
 139
 140 void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv)
 141 {
 142         debugfs_remove_recursive(priv->dbg.dir);
 143 }
 144
 145 void dpaa2_eth_dbg_init(void)
 146 {
 147         dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL);
 148         pr_debug("DPAA2-ETH: debugfs created\n");
 149 }
 150
 151 void dpaa2_eth_dbg_exit(void)
 152 {
 153         debugfs_remove(dpaa2_dbg_root);
 154 }