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 static int dpaa2_dbg_cpu_open(struct inode *inode, struct file *file) 46 { 47 int err; 48 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; 49 50 err = single_open(file, dpaa2_dbg_cpu_show, priv); 51 if (err < 0) 52 netdev_err(priv->net_dev, "single_open() failed\n"); 53 54 return err; 55 } 56 57 static const struct file_operations dpaa2_dbg_cpu_ops = { 58 .open = dpaa2_dbg_cpu_open, 59 .read = seq_read, 60 .llseek = seq_lseek, 61 .release = single_release, 62 }; 63 64 static char *fq_type_to_str(struct dpaa2_eth_fq *fq) 65 { 66 switch (fq->type) { 67 case DPAA2_RX_FQ: 68 return "Rx"; 69 case DPAA2_TX_CONF_FQ: 70 return "Tx conf"; 71 default: 72 return "N/A"; 73 } 74 } 75 76 static int dpaa2_dbg_fqs_show(struct seq_file *file, void *offset) 77 { 78 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private; 79 struct dpaa2_eth_fq *fq; 80 u32 fcnt, bcnt; 81 int i, err; 82 83 seq_printf(file, "FQ stats for %s:\n", priv->net_dev->name); 84 seq_printf(file, "%s%16s%16s%16s%16s%16s\n", 85 "VFQID", "CPU", "TC", "Type", "Frames", "Pending frames"); 86 87 for (i = 0; i < priv->num_fqs; i++) { 88 fq = &priv->fq[i]; 89 err = dpaa2_io_query_fq_count(NULL, fq->fqid, &fcnt, &bcnt); 90 if (err) 91 fcnt = 0; 92 93 /* Skip FQs with no traffic */ 94 if (!fq->stats.frames && !fcnt) 95 continue; 96 97 seq_printf(file, "%5d%16d%16d%16s%16llu%16u\n", 98 fq->fqid, 99 fq->target_cpu, 100 fq->tc, 101 fq_type_to_str(fq), 102 fq->stats.frames, 103 fcnt); 104 } 105 106 return 0; 107 } 108 109 static int dpaa2_dbg_fqs_open(struct inode *inode, struct file *file) 110 { 111 int err; 112 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; 113 114 err = single_open(file, dpaa2_dbg_fqs_show, priv); 115 if (err < 0) 116 netdev_err(priv->net_dev, "single_open() failed\n"); 117 118 return err; 119 } 120 121 static const struct file_operations dpaa2_dbg_fq_ops = { 122 .open = dpaa2_dbg_fqs_open, 123 .read = seq_read, 124 .llseek = seq_lseek, 125 .release = single_release, 126 }; 127 128 static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset) 129 { 130 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private; 131 struct dpaa2_eth_channel *ch; 132 int i; 133 134 seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name); 135 seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n", 136 "CHID", "CPU", "Deq busy", "Frames", "CDANs", 137 "Avg Frm/CDAN", "Buf count"); 138 139 for (i = 0; i < priv->num_channels; i++) { 140 ch = priv->channel[i]; 141 seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n", 142 ch->ch_id, 143 ch->nctx.desired_cpu, 144 ch->stats.dequeue_portal_busy, 145 ch->stats.frames, 146 ch->stats.cdan, 147 div64_u64(ch->stats.frames, ch->stats.cdan), 148 ch->buf_count); 149 } 150 151 return 0; 152 } 153 154 static int dpaa2_dbg_ch_open(struct inode *inode, struct file *file) 155 { 156 int err; 157 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; 158 159 err = single_open(file, dpaa2_dbg_ch_show, priv); 160 if (err < 0) 161 netdev_err(priv->net_dev, "single_open() failed\n"); 162 163 return err; 164 } 165 166 static const struct file_operations dpaa2_dbg_ch_ops = { 167 .open = dpaa2_dbg_ch_open, 168 .read = seq_read, 169 .llseek = seq_lseek, 170 .release = single_release, 171 }; 172 173 void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) 174 { 175 struct dentry *dir; 176 177 /* Create a directory for the interface */ 178 dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root); 179 priv->dbg.dir = dir; 180 181 /* per-cpu stats file */ 182 debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_ops); 183 184 /* per-fq stats file */ 185 debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fq_ops); 186 187 /* per-fq stats file */ 188 debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops); 189 } 190 191 void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) 192 { 193 debugfs_remove_recursive(priv->dbg.dir); 194 } 195 196 void dpaa2_eth_dbg_init(void) 197 { 198 dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL); 199 pr_debug("DPAA2-ETH: debugfs created\n"); 200 } 201 202 void dpaa2_eth_dbg_exit(void) 203 { 204 debugfs_remove(dpaa2_dbg_root); 205 } 206