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/*
* Copyright (c) 2008 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 "ath9k.h"
static unsigned int ath9k_debug = DBG_DEFAULT;
module_param_named(debug, ath9k_debug, uint, 0);
void DPRINTF(struct ath_softc *sc, int dbg_mask, const char *fmt, ...)
{
if (!sc)
return;
if (sc->debug.debug_mask & dbg_mask) {
va_list args;
va_start(args, fmt);
printk(KERN_DEBUG "ath9k: ");
vprintk(fmt, args);
va_end(args);
}
}
static int ath9k_debugfs_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static ssize_t read_file_dma(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_hw *ah = sc->sc_ah;
char buf[1024];
unsigned int len = 0;
u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
int i, qcuOffset = 0, dcuOffset = 0;
u32 *qcuBase = &val[0], *dcuBase = &val[4];
REG_WRITE(ah, AR_MACMISC,
((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
(AR_MACMISC_MISC_OBS_BUS_1 <<
AR_MACMISC_MISC_OBS_BUS_MSB_S)));
len += snprintf(buf + len, sizeof(buf) - len,
"Raw DMA Debug values:\n");
for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
if (i % 4 == 0)
len += snprintf(buf + len, sizeof(buf) - len, "\n");
val[i] = REG_READ(ah, AR_DMADBG_0 + (i * sizeof(u32)));
len += snprintf(buf + len, sizeof(buf) - len, "%d: %08x ",
i, val[i]);
}
len += snprintf(buf + len, sizeof(buf) - len, "\n\n");
len += snprintf(buf + len, sizeof(buf) - len,
"Num QCU: chain_st fsp_ok fsp_st DCU: chain_st\n");
for (i = 0; i < ATH9K_NUM_QUEUES; i++, qcuOffset += 4, dcuOffset += 5) {
if (i == 8) {
qcuOffset = 0;
qcuBase++;
}
if (i == 6) {
dcuOffset = 0;
dcuBase++;
}
len += snprintf(buf + len, sizeof(buf) - len,
"%2d %2x %1x %2x %2x\n",
i, (*qcuBase & (0x7 << qcuOffset)) >> qcuOffset,
(*qcuBase & (0x8 << qcuOffset)) >> (qcuOffset + 3),
val[2] & (0x7 << (i * 3)) >> (i * 3),
(*dcuBase & (0x1f << dcuOffset)) >> dcuOffset);
}
len += snprintf(buf + len, sizeof(buf) - len, "\n");
len += snprintf(buf + len, sizeof(buf) - len,
"qcu_stitch state: %2x qcu_fetch state: %2x\n",
(val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
len += snprintf(buf + len, sizeof(buf) - len,
"qcu_complete state: %2x dcu_complete state: %2x\n",
(val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
len += snprintf(buf + len, sizeof(buf) - len,
"dcu_arb state: %2x dcu_fp state: %2x\n",
(val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
len += snprintf(buf + len, sizeof(buf) - len,
"chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
(val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
len += snprintf(buf + len, sizeof(buf) - len,
"txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
(val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
len += snprintf(buf + len, sizeof(buf) - len,
"txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
(val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
len += snprintf(buf + len, sizeof(buf) - len, "pcu observe: 0x%x \n",
REG_READ(ah, AR_OBS_BUS_1));
len += snprintf(buf + len, sizeof(buf) - len,
"AR_CR: 0x%x \n", REG_READ(ah, AR_CR));
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_dma = {
.read = read_file_dma,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE
};
void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
{
if (status)
sc->debug.stats.istats.total++;
if (status & ATH9K_INT_RX)
sc->debug.stats.istats.rxok++;
if (status & ATH9K_INT_RXEOL)
sc->debug.stats.istats.rxeol++;
if (status & ATH9K_INT_RXORN)
sc->debug.stats.istats.rxorn++;
if (status & ATH9K_INT_TX)
sc->debug.stats.istats.txok++;
if (status & ATH9K_INT_TXURN)
sc->debug.stats.istats.txurn++;
if (status & ATH9K_INT_MIB)
sc->debug.stats.istats.mib++;
if (status & ATH9K_INT_RXPHY)
sc->debug.stats.istats.rxphyerr++;
if (status & ATH9K_INT_RXKCM)
sc->debug.stats.istats.rx_keycache_miss++;
if (status & ATH9K_INT_SWBA)
sc->debug.stats.istats.swba++;
if (status & ATH9K_INT_BMISS)
sc->debug.stats.istats.bmiss++;
if (status & ATH9K_INT_BNR)
sc->debug.stats.istats.bnr++;
if (status & ATH9K_INT_CST)
sc->debug.stats.istats.cst++;
if (status & ATH9K_INT_GTT)
sc->debug.stats.istats.gtt++;
if (status & ATH9K_INT_TIM)
sc->debug.stats.istats.tim++;
if (status & ATH9K_INT_CABEND)
sc->debug.stats.istats.cabend++;
if (status & ATH9K_INT_DTIMSYNC)
sc->debug.stats.istats.dtimsync++;
if (status & ATH9K_INT_DTIM)
sc->debug.stats.istats.dtim++;
}
static ssize_t read_file_interrupt(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
char buf[512];
unsigned int len = 0;
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RX", sc->debug.stats.istats.rxok);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RXEOL", sc->debug.stats.istats.rxeol);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RXORN", sc->debug.stats.istats.rxorn);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "TX", sc->debug.stats.istats.txok);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "TXURN", sc->debug.stats.istats.txurn);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "MIB", sc->debug.stats.istats.mib);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RXPHY", sc->debug.stats.istats.rxphyerr);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RXKCM", sc->debug.stats.istats.rx_keycache_miss);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "SWBA", sc->debug.stats.istats.swba);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "BMISS", sc->debug.stats.istats.bmiss);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "BNR", sc->debug.stats.istats.bnr);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "CST", sc->debug.stats.istats.cst);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "GTT", sc->debug.stats.istats.gtt);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "TIM", sc->debug.stats.istats.tim);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "CABEND", sc->debug.stats.istats.cabend);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "DTIMSYNC", sc->debug.stats.istats.dtimsync);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "DTIM", sc->debug.stats.istats.dtim);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_interrupt = {
.read = read_file_interrupt,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE
};
static void ath_debug_stat_11n_rc(struct ath_softc *sc, struct sk_buff *skb)
{
struct ath_tx_info_priv *tx_info_priv = NULL;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rates = tx_info->status.rates;
int final_ts_idx, idx;
tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
final_ts_idx = tx_info_priv->tx.ts_rateindex;
idx = sc->cur_rate_table->info[rates[final_ts_idx].idx].dot11rate;
sc->debug.stats.n_rcstats[idx].success++;
}
static void ath_debug_stat_legacy_rc(struct ath_softc *sc, struct sk_buff *skb)
{
struct ath_tx_info_priv *tx_info_priv = NULL;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rates = tx_info->status.rates;
int final_ts_idx, idx;
tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
final_ts_idx = tx_info_priv->tx.ts_rateindex;
idx = rates[final_ts_idx].idx;
sc->debug.stats.legacy_rcstats[idx].success++;
}
void ath_debug_stat_rc(struct ath_softc *sc, struct sk_buff *skb)
{
if (conf_is_ht(&sc->hw->conf))
ath_debug_stat_11n_rc(sc, skb);
else
ath_debug_stat_legacy_rc(sc, skb);
}
/* FIXME: legacy rates, later on .. */
void ath_debug_stat_retries(struct ath_softc *sc, int rix,
int xretries, int retries)
{
if (conf_is_ht(&sc->hw->conf)) {
int idx = sc->cur_rate_table->info[rix].dot11rate;
sc->debug.stats.n_rcstats[idx].xretries += xretries;
sc->debug.stats.n_rcstats[idx].retries += retries;
}
}
static ssize_t ath_read_file_stat_11n_rc(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
char buf[1024];
unsigned int len = 0;
int i = 0;
len += sprintf(buf, "%7s %13s %8s %8s\n\n", "Rate", "Success",
"Retries", "XRetries");
for (i = 0; i <= 15; i++) {
len += snprintf(buf + len, sizeof(buf) - len,
"%5s%3d: %8u %8u %8u\n", "MCS", i,
sc->debug.stats.n_rcstats[i].success,
sc->debug.stats.n_rcstats[i].retries,
sc->debug.stats.n_rcstats[i].xretries);
}
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t ath_read_file_stat_legacy_rc(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
char buf[512];
unsigned int len = 0;
int i = 0;
len += sprintf(buf, "%7s %13s\n\n", "Rate", "Success");
for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
len += snprintf(buf + len, sizeof(buf) - len, "%5u: %12u\n",
sc->cur_rate_table->info[i].ratekbps / 1000,
sc->debug.stats.legacy_rcstats[i].success);
}
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
if (conf_is_ht(&sc->hw->conf))
return ath_read_file_stat_11n_rc(file, user_buf, count, ppos);
else
return ath_read_file_stat_legacy_rc(file, user_buf, count ,ppos);
}
static const struct file_operations fops_rcstat = {
.read = read_file_rcstat,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE
};
int ath9k_init_debug(struct ath_softc *sc)
{
sc->debug.debug_mask = ath9k_debug;
sc->debug.debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (!sc->debug.debugfs_root)
goto err;
sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
sc->debug.debugfs_root);
if (!sc->debug.debugfs_phy)
goto err;
sc->debug.debugfs_dma = debugfs_create_file("dma", S_IRUGO,
sc->debug.debugfs_phy, sc, &fops_dma);
if (!sc->debug.debugfs_dma)
goto err;
sc->debug.debugfs_interrupt = debugfs_create_file("interrupt",
S_IRUGO,
sc->debug.debugfs_phy,
sc, &fops_interrupt);
if (!sc->debug.debugfs_interrupt)
goto err;
sc->debug.debugfs_rcstat = debugfs_create_file("rcstat",
S_IRUGO,
sc->debug.debugfs_phy,
sc, &fops_rcstat);
if (!sc->debug.debugfs_rcstat)
goto err;
return 0;
err:
ath9k_exit_debug(sc);
return -ENOMEM;
}
void ath9k_exit_debug(struct ath_softc *sc)
{
debugfs_remove(sc->debug.debugfs_rcstat);
debugfs_remove(sc->debug.debugfs_interrupt);
debugfs_remove(sc->debug.debugfs_dma);
debugfs_remove(sc->debug.debugfs_phy);
debugfs_remove(sc->debug.debugfs_root);
}
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