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 fsl_mc_device *dpni_dev; 125 struct dentry *dir; 126 char name[10]; 127 128 /* Create a directory for the interface */ 129 dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent); 130 snprintf(name, 10, "dpni.%d", dpni_dev->obj_desc.id); 131 dir = debugfs_create_dir(name, dpaa2_dbg_root); 132 priv->dbg.dir = dir; 133 134 /* per-cpu stats file */ 135 debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_fops); 136 137 /* per-fq stats file */ 138 debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fqs_fops); 139 140 /* per-fq stats file */ 141 debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_fops); 142 } 143 144 void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) 145 { 146 debugfs_remove_recursive(priv->dbg.dir); 147 } 148 149 void dpaa2_eth_dbg_init(void) 150 { 151 dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL); 152 pr_debug("DPAA2-ETH: debugfs created\n"); 153 } 154 155 void dpaa2_eth_dbg_exit(void) 156 { 157 debugfs_remove(dpaa2_dbg_root); 158 } 159