diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c new file mode 100644 index 000000000..8356af463 --- /dev/null +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth-debugfs.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) +/* Copyright 2015 Freescale Semiconductor Inc. + * Copyright 2018-2019 NXP + */ +#include <linux/module.h> +#include <linux/debugfs.h> +#include "dpaa2-eth.h" +#include "dpaa2-eth-debugfs.h" + +#define DPAA2_ETH_DBG_ROOT "dpaa2-eth" + +static struct dentry *dpaa2_dbg_root; + +static int dpaa2_dbg_cpu_show(struct seq_file *file, void *offset) +{ + struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private; + struct rtnl_link_stats64 *stats; + struct dpaa2_eth_drv_stats *extras; + int i; + + seq_printf(file, "Per-CPU stats for %s\n", priv->net_dev->name); + seq_printf(file, "%s%16s%16s%16s%16s%16s%16s%16s%16s%16s\n", + "CPU", "Rx", "Rx Err", "Rx SG", "Tx", "Tx Err", "Tx conf", + "Tx SG", "Tx converted to SG", "Enq busy"); + + for_each_online_cpu(i) { + stats = per_cpu_ptr(priv->percpu_stats, i); + extras = per_cpu_ptr(priv->percpu_extras, i); + seq_printf(file, "%3d%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu%16llu\n", + i, + stats->rx_packets, + stats->rx_errors, + extras->rx_sg_frames, + stats->tx_packets, + stats->tx_errors, + extras->tx_conf_frames, + extras->tx_sg_frames, + extras->tx_converted_sg_frames, + extras->tx_portal_busy); + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_cpu); + +static char *fq_type_to_str(struct dpaa2_eth_fq *fq) +{ + switch (fq->type) { + case DPAA2_RX_FQ: + return "Rx"; + case DPAA2_TX_CONF_FQ: + return "Tx conf"; + default: + return "N/A"; + } +} + +static int dpaa2_dbg_fqs_show(struct seq_file *file, void *offset) +{ + struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private; + struct dpaa2_eth_fq *fq; + u32 fcnt, bcnt; + int i, err; + + seq_printf(file, "FQ stats for %s:\n", priv->net_dev->name); + seq_printf(file, "%s%16s%16s%16s%16s%16s\n", + "VFQID", "CPU", "TC", "Type", "Frames", "Pending frames"); + + for (i = 0; i < priv->num_fqs; i++) { + fq = &priv->fq[i]; + err = dpaa2_io_query_fq_count(NULL, fq->fqid, &fcnt, &bcnt); + if (err) + fcnt = 0; + + /* Skip FQs with no traffic */ + if (!fq->stats.frames && !fcnt) + continue; + + seq_printf(file, "%5d%16d%16d%16s%16llu%16u\n", + fq->fqid, + fq->target_cpu, + fq->tc, + fq_type_to_str(fq), + fq->stats.frames, + fcnt); + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_fqs); + +static int dpaa2_dbg_ch_show(struct seq_file *file, void *offset) +{ + struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)file->private; + struct dpaa2_eth_channel *ch; + int i; + + seq_printf(file, "Channel stats for %s:\n", priv->net_dev->name); + seq_printf(file, "%s%16s%16s%16s%16s%16s%16s\n", + "CHID", "CPU", "Deq busy", "Frames", "CDANs", + "Avg Frm/CDAN", "Buf count"); + + for (i = 0; i < priv->num_channels; i++) { + ch = priv->channel[i]; + seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu%16d\n", + ch->ch_id, + ch->nctx.desired_cpu, + ch->stats.dequeue_portal_busy, + ch->stats.frames, + ch->stats.cdan, + div64_u64(ch->stats.frames, ch->stats.cdan), + ch->buf_count); + } + + return 0; +} + +DEFINE_SHOW_ATTRIBUTE(dpaa2_dbg_ch); + +void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) +{ + struct fsl_mc_device *dpni_dev; + struct dentry *dir; + char name[10]; + + /* Create a directory for the interface */ + dpni_dev = to_fsl_mc_device(priv->net_dev->dev.parent); + snprintf(name, 10, "dpni.%d", dpni_dev->obj_desc.id); + dir = debugfs_create_dir(name, dpaa2_dbg_root); + priv->dbg.dir = dir; + + /* per-cpu stats file */ + debugfs_create_file("cpu_stats", 0444, dir, priv, &dpaa2_dbg_cpu_fops); + + /* per-fq stats file */ + debugfs_create_file("fq_stats", 0444, dir, priv, &dpaa2_dbg_fqs_fops); + + /* per-fq stats file */ + debugfs_create_file("ch_stats", 0444, dir, priv, &dpaa2_dbg_ch_fops); +} + +void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) +{ + debugfs_remove_recursive(priv->dbg.dir); +} + +void dpaa2_eth_dbg_init(void) +{ + dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL); + pr_debug("DPAA2-ETH: debugfs created\n"); +} + +void dpaa2_eth_dbg_exit(void) +{ + debugfs_remove(dpaa2_dbg_root); +} |