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/*
* Copyright (c) 2010-2011 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "htc.h"
static struct dentry *ath9k_debugfs_root;
static int ath9k_debugfs_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static ssize_t read_file_tgt_stats(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath9k_htc_priv *priv = file->private_data;
struct ath9k_htc_target_stats cmd_rsp;
char buf[512];
unsigned int len = 0;
int ret = 0;
memset(&cmd_rsp, 0, sizeof(cmd_rsp));
WMI_CMD(WMI_TGT_STATS_CMDID);
if (ret)
return -EINVAL;
len += snprintf(buf + len, sizeof(buf) - len,
"%19s : %10u\n", "TX Short Retries",
be32_to_cpu(cmd_rsp.tx_shortretry));
len += snprintf(buf + len, sizeof(buf) - len,
"%19s : %10u\n", "TX Long Retries",
be32_to_cpu(cmd_rsp.tx_longretry));
len += snprintf(buf + len, sizeof(buf) - len,
"%19s : %10u\n", "TX Xretries",
be32_to_cpu(cmd_rsp.tx_xretries));
len += snprintf(buf + len, sizeof(buf) - len,
"%19s : %10u\n", "TX Unaggr. Xretries",
be32_to_cpu(cmd_rsp.ht_txunaggr_xretry));
len += snprintf(buf + len, sizeof(buf) - len,
"%19s : %10u\n", "TX Xretries (HT)",
be32_to_cpu(cmd_rsp.ht_tx_xretries));
len += snprintf(buf + len, sizeof(buf) - len,
"%19s : %10u\n", "TX Rate", priv->debug.txrate);
if (len > sizeof(buf))
len = sizeof(buf);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_tgt_stats = {
.read = read_file_tgt_stats,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath9k_htc_priv *priv = file->private_data;
char buf[512];
unsigned int len = 0;
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "Buffers queued",
priv->debug.tx_stats.buf_queued);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "Buffers completed",
priv->debug.tx_stats.buf_completed);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs queued",
priv->debug.tx_stats.skb_queued);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs completed",
priv->debug.tx_stats.skb_completed);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs dropped",
priv->debug.tx_stats.skb_dropped);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "CAB queued",
priv->debug.tx_stats.cab_queued);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "BE queued",
priv->debug.tx_stats.queue_stats[WME_AC_BE]);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "BK queued",
priv->debug.tx_stats.queue_stats[WME_AC_BK]);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "VI queued",
priv->debug.tx_stats.queue_stats[WME_AC_VI]);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "VO queued",
priv->debug.tx_stats.queue_stats[WME_AC_VO]);
if (len > sizeof(buf))
len = sizeof(buf);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_xmit = {
.read = read_file_xmit,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_recv(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath9k_htc_priv *priv = file->private_data;
char buf[512];
unsigned int len = 0;
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs allocated",
priv->debug.rx_stats.skb_allocated);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs completed",
priv->debug.rx_stats.skb_completed);
len += snprintf(buf + len, sizeof(buf) - len,
"%20s : %10u\n", "SKBs Dropped",
priv->debug.rx_stats.skb_dropped);
if (len > sizeof(buf))
len = sizeof(buf);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_recv = {
.read = read_file_recv,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
int ath9k_htc_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
if (!ath9k_debugfs_root)
return -ENOENT;
priv->debug.debugfs_phy = debugfs_create_dir(wiphy_name(priv->hw->wiphy),
ath9k_debugfs_root);
if (!priv->debug.debugfs_phy)
goto err;
priv->debug.debugfs_tgt_stats = debugfs_create_file("tgt_stats", S_IRUSR,
priv->debug.debugfs_phy,
priv, &fops_tgt_stats);
if (!priv->debug.debugfs_tgt_stats)
goto err;
priv->debug.debugfs_xmit = debugfs_create_file("xmit", S_IRUSR,
priv->debug.debugfs_phy,
priv, &fops_xmit);
if (!priv->debug.debugfs_xmit)
goto err;
priv->debug.debugfs_recv = debugfs_create_file("recv", S_IRUSR,
priv->debug.debugfs_phy,
priv, &fops_recv);
if (!priv->debug.debugfs_recv)
goto err;
return 0;
err:
ath9k_htc_exit_debug(ah);
return -ENOMEM;
}
void ath9k_htc_exit_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
debugfs_remove(priv->debug.debugfs_recv);
debugfs_remove(priv->debug.debugfs_xmit);
debugfs_remove(priv->debug.debugfs_tgt_stats);
debugfs_remove(priv->debug.debugfs_phy);
}
int ath9k_htc_debug_create_root(void)
{
ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (!ath9k_debugfs_root)
return -ENOENT;
return 0;
}
void ath9k_htc_debug_remove_root(void)
{
debugfs_remove(ath9k_debugfs_root);
ath9k_debugfs_root = NULL;
}
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