diff options
Diffstat (limited to 'drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-debugfs.c')
| -rw-r--r-- | drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-debugfs.c | 350 |
1 files changed, 350 insertions, 0 deletions
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-debugfs.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-debugfs.c new file mode 100644 index 0000000..445c5d1 --- /dev/null +++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth-debugfs.c @@ -0,0 +1,350 @@ + +/* Copyright 2015 Freescale Semiconductor Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of Freescale Semiconductor nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") as published by the Free Software + * Foundation, either version 2 of that License or (at your option) any + * later version. + * + * THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#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\n", + "CPU", "Rx", "Rx Err", "Rx SG", "Tx", "Tx Err", "Tx conf", + "Tx 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\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_portal_busy); + } + + return 0; +} + +static int dpaa2_dbg_cpu_open(struct inode *inode, struct file *file) +{ + int err; + struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; + + err = single_open(file, dpaa2_dbg_cpu_show, priv); + if (err < 0) + netdev_err(priv->net_dev, "single_open() failed\n"); + + return err; +} + +static const struct file_operations dpaa2_dbg_cpu_ops = { + .open = dpaa2_dbg_cpu_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +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"; + case DPAA2_RX_ERR_FQ: + return "Rx err"; + 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", "Type", "Frames", "Pending frames", + "Congestion"); + + 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; + + seq_printf(file, "%5d%16d%16s%16llu%16u%16llu\n", + fq->fqid, + fq->target_cpu, + fq_type_to_str(fq), + fq->stats.frames, + fcnt, + fq->stats.congestion_entry); + } + + return 0; +} + +static int dpaa2_dbg_fqs_open(struct inode *inode, struct file *file) +{ + int err; + struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; + + err = single_open(file, dpaa2_dbg_fqs_show, priv); + if (err < 0) + netdev_err(priv->net_dev, "single_open() failed\n"); + + return err; +} + +static const struct file_operations dpaa2_dbg_fq_ops = { + .open = dpaa2_dbg_fqs_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +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\n", + "CHID", "CPU", "Deq busy", "Frames", "CDANs", + "Avg frm/CDAN"); + + for (i = 0; i < priv->num_channels; i++) { + ch = priv->channel[i]; + seq_printf(file, "%4d%16d%16llu%16llu%16llu%16llu\n", + ch->ch_id, + ch->nctx.desired_cpu, + ch->stats.dequeue_portal_busy, + ch->stats.frames, + ch->stats.cdan, + ch->stats.frames / ch->stats.cdan); + } + + return 0; +} + +static int dpaa2_dbg_ch_open(struct inode *inode, struct file *file) +{ + int err; + struct dpaa2_eth_priv *priv = (struct dpaa2_eth_priv *)inode->i_private; + + err = single_open(file, dpaa2_dbg_ch_show, priv); + if (err < 0) + netdev_err(priv->net_dev, "single_open() failed\n"); + + return err; +} + +static const struct file_operations dpaa2_dbg_ch_ops = { + .open = dpaa2_dbg_ch_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static ssize_t dpaa2_dbg_reset_write(struct file *file, const char __user *buf, + size_t count, loff_t *offset) +{ + struct dpaa2_eth_priv *priv = file->private_data; + struct rtnl_link_stats64 *percpu_stats; + struct dpaa2_eth_drv_stats *percpu_extras; + struct dpaa2_eth_fq *fq; + struct dpaa2_eth_channel *ch; + int i; + + for_each_online_cpu(i) { + percpu_stats = per_cpu_ptr(priv->percpu_stats, i); + memset(percpu_stats, 0, sizeof(*percpu_stats)); + + percpu_extras = per_cpu_ptr(priv->percpu_extras, i); + memset(percpu_extras, 0, sizeof(*percpu_extras)); + } + + for (i = 0; i < priv->num_fqs; i++) { + fq = &priv->fq[i]; + memset(&fq->stats, 0, sizeof(fq->stats)); + } + + for (i = 0; i < priv->num_channels; i++) { + ch = priv->channel[i]; + memset(&ch->stats, 0, sizeof(ch->stats)); + } + + return count; +} + +static const struct file_operations dpaa2_dbg_reset_ops = { + .open = simple_open, + .write = dpaa2_dbg_reset_write, +}; + +static ssize_t dpaa2_dbg_reset_mc_write(struct file *file, + const char __user *buf, + size_t count, loff_t *offset) +{ + struct dpaa2_eth_priv *priv = file->private_data; + int err; + + err = dpni_reset_statistics(priv->mc_io, 0, priv->mc_token); + if (err) + netdev_err(priv->net_dev, + "dpni_reset_statistics() failed %d\n", err); + + return count; +} + +static const struct file_operations dpaa2_dbg_reset_mc_ops = { + .open = simple_open, + .write = dpaa2_dbg_reset_mc_write, +}; + +void dpaa2_dbg_add(struct dpaa2_eth_priv *priv) +{ + if (!dpaa2_dbg_root) + return; + + /* Create a directory for the interface */ + priv->dbg.dir = debugfs_create_dir(priv->net_dev->name, + dpaa2_dbg_root); + if (!priv->dbg.dir) { + netdev_err(priv->net_dev, "debugfs_create_dir() failed\n"); + return; + } + + /* per-cpu stats file */ + priv->dbg.cpu_stats = debugfs_create_file("cpu_stats", 0444, + priv->dbg.dir, priv, + &dpaa2_dbg_cpu_ops); + if (!priv->dbg.cpu_stats) { + netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); + goto err_cpu_stats; + } + + /* per-fq stats file */ + priv->dbg.fq_stats = debugfs_create_file("fq_stats", 0444, + priv->dbg.dir, priv, + &dpaa2_dbg_fq_ops); + if (!priv->dbg.fq_stats) { + netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); + goto err_fq_stats; + } + + /* per-fq stats file */ + priv->dbg.ch_stats = debugfs_create_file("ch_stats", 0444, + priv->dbg.dir, priv, + &dpaa2_dbg_ch_ops); + if (!priv->dbg.fq_stats) { + netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); + goto err_ch_stats; + } + + /* reset stats */ + priv->dbg.reset_stats = debugfs_create_file("reset_stats", 0200, + priv->dbg.dir, priv, + &dpaa2_dbg_reset_ops); + if (!priv->dbg.reset_stats) { + netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); + goto err_reset_stats; + } + + /* reset MC stats */ + priv->dbg.reset_mc_stats = debugfs_create_file("reset_mc_stats", + 0222, priv->dbg.dir, priv, + &dpaa2_dbg_reset_mc_ops); + if (!priv->dbg.reset_mc_stats) { + netdev_err(priv->net_dev, "debugfs_create_file() failed\n"); + goto err_reset_mc_stats; + } + + return; + +err_reset_mc_stats: + debugfs_remove(priv->dbg.reset_stats); +err_reset_stats: + debugfs_remove(priv->dbg.ch_stats); +err_ch_stats: + debugfs_remove(priv->dbg.fq_stats); +err_fq_stats: + debugfs_remove(priv->dbg.cpu_stats); +err_cpu_stats: + debugfs_remove(priv->dbg.dir); +} + +void dpaa2_dbg_remove(struct dpaa2_eth_priv *priv) +{ + debugfs_remove(priv->dbg.reset_mc_stats); + debugfs_remove(priv->dbg.reset_stats); + debugfs_remove(priv->dbg.fq_stats); + debugfs_remove(priv->dbg.ch_stats); + debugfs_remove(priv->dbg.cpu_stats); + debugfs_remove(priv->dbg.dir); +} + +void dpaa2_eth_dbg_init(void) +{ + dpaa2_dbg_root = debugfs_create_dir(DPAA2_ETH_DBG_ROOT, NULL); + if (!dpaa2_dbg_root) { + pr_err("DPAA2-ETH: debugfs create failed\n"); + return; + } + + pr_info("DPAA2-ETH: debugfs created\n"); +} + +void __exit dpaa2_eth_dbg_exit(void) +{ + debugfs_remove(dpaa2_dbg_root); +} |