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 realloc", "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_reallocs, 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 seq_printf(file, "%5d%16d%16d%16s%16llu%16u\n", 94 fq->fqid, 95 fq->target_cpu, 96 fq->tc, 97 fq_type_to_str(fq), 98 fq->stats.frames, 99 fcnt); 100 } 101 102 return 0; 103 } 104 105 static int dpaa2_dbg_fqs_open(struct inode *inode, struct file *file) 106 { 107 int err; 108 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; 109 110 err = single_open(file, dpaa2_dbg_fqs_show, priv); 111 if (err < 0) 112 netdev_err(priv->net_dev, "single_open() failed\n"); 113 114 return err; 115 } 116 117 static const struct file_operations dpaa2_dbg_fq_ops = { 118 .open = dpaa2_dbg_fqs_open, 119 .read = seq_read, 120 .llseek = seq_lseek, 121 .release = single_release, 122 }; 123 124 static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset) 125 { 126 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private; 127 struct dpaa2_eth_channel *ch; 128 int i; 129 130 seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name); 131 seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n", 132 "CHID", "CPU", "Deq busy", "Frames", "CDANs", 133 "Avg Frm/CDAN", "Buf count"); 134 135 for (i = 0; i < priv->num_channels; i++) { 136 ch = priv->channel[i]; 137 seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n", 138 ch->ch_id, 139 ch->nctx.desired_cpu, 140 ch->stats.dequeue_portal_busy, 141 ch->stats.frames, 142 ch->stats.cdan, 143 div64_u64(ch->stats.frames, ch->stats.cdan), 144 ch->buf_count); 145 } 146 147 return 0; 148 } 149 150 static int dpaa2_dbg_ch_open(struct inode *inode, struct file *file) 151 { 152 int err; 153 struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; 154 155 err = single_open(file, dpaa2_dbg_ch_show, priv); 156 if (err < 0) 157 netdev_err(priv->net_dev, "single_open() failed\n"); 158 159 return err; 160 } 161 162 static const struct file_operations dpaa2_dbg_ch_ops = { 163 .open = dpaa2_dbg_ch_open, 164 .read = seq_read, 165 .llseek = seq_lseek, 166 .release = single_release, 167 }; 168 169 void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) 170 { 171 struct dentry *dir; 172 173 /* Create a directory for the interface */ 174 dir = debugfs_create_dir(priv->net_dev->name, dpaa2_dbg_root); 175 priv->dbg.dir = dir; 176 177 /* per-cpu stats file */ 178 debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_ops); 179 180 /* per-fq stats file */ 181 debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fq_ops); 182 183 /* per-fq stats file */ 184 debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_ops); 185 } 186 187 void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) 188 { 189 debugfs_remove_recursive(priv->dbg.dir); 190 } 191 192 void dpaa2_eth_dbg_init(void) 193 { 194 dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL); 195 pr_debug("DPAA2-ETH: debugfs created\n"); 196 } 197 198 void dpaa2_eth_dbg_exit(void) 199 { 200 debugfs_remove(dpaa2_dbg_root); 201 } 202