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linux_dsm_epyc7002/drivers/net/wireless/ath/ath9k/debug.c
Felix Fietkau 5a6f78afda ath9k: show excessive-retry MPDUs in debugfs 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2011-06-03 15:01:07 -04:00

1237 lines
36 KiB
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/*
* Copyright (c) 2008-2011 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 <linux/slab.h>
#include <linux/vmalloc.h>
#include <asm/unaligned.h>
#include "ath9k.h"
#define REG_WRITE_D(_ah, _reg, _val) \
ath9k_hw_common(_ah)->ops->write((_ah), (_val), (_reg))
#define REG_READ_D(_ah, _reg) \
ath9k_hw_common(_ah)->ops->read((_ah), (_reg))
static int ath9k_debugfs_open(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
static ssize_t ath9k_debugfs_read_buf(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
u8 *buf = file->private_data;
return simple_read_from_buffer(user_buf, count, ppos, buf, strlen(buf));
}
static int ath9k_debugfs_release_buf(struct inode *inode, struct file *file)
{
vfree(file->private_data);
return 0;
}
#ifdef CONFIG_ATH_DEBUG
static ssize_t read_file_debug(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
char buf[32];
unsigned int len;
len = sprintf(buf, "0x%08x\n", common->debug_mask);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t write_file_debug(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long mask;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &mask))
return -EINVAL;
common->debug_mask = mask;
return count;
}
static const struct file_operations fops_debug = {
.read = read_file_debug,
.write = write_file_debug,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
#endif
#define DMA_BUF_LEN 1024
static ssize_t read_file_tx_chainmask(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
char buf[32];
unsigned int len;
len = sprintf(buf, "0x%08x\n", common->tx_chainmask);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t write_file_tx_chainmask(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long mask;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &mask))
return -EINVAL;
common->tx_chainmask = mask;
sc->sc_ah->caps.tx_chainmask = mask;
return count;
}
static const struct file_operations fops_tx_chainmask = {
.read = read_file_tx_chainmask,
.write = write_file_tx_chainmask,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_rx_chainmask(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
char buf[32];
unsigned int len;
len = sprintf(buf, "0x%08x\n", common->rx_chainmask);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t write_file_rx_chainmask(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long mask;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &mask))
return -EINVAL;
common->rx_chainmask = mask;
sc->sc_ah->caps.rx_chainmask = mask;
return count;
}
static const struct file_operations fops_rx_chainmask = {
.read = read_file_rx_chainmask,
.write = write_file_rx_chainmask,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_disable_ani(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
char buf[32];
unsigned int len;
len = sprintf(buf, "%d\n", common->disable_ani);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t write_file_disable_ani(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
unsigned long disable_ani;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &disable_ani))
return -EINVAL;
common->disable_ani = !!disable_ani;
if (disable_ani) {
sc->sc_flags &= ~SC_OP_ANI_RUN;
del_timer_sync(&common->ani.timer);
} else {
sc->sc_flags |= SC_OP_ANI_RUN;
ath_start_ani(common);
}
return count;
}
static const struct file_operations fops_disable_ani = {
.read = read_file_disable_ani,
.write = write_file_disable_ani,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
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;
int retval;
unsigned int len = 0;
u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
int i, qcuOffset = 0, dcuOffset = 0;
u32 *qcuBase = &val[0], *dcuBase = &val[4];
buf = kmalloc(DMA_BUF_LEN, GFP_KERNEL);
if (!buf)
return -ENOMEM;
ath9k_ps_wakeup(sc);
REG_WRITE_D(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, DMA_BUF_LEN - len,
"Raw DMA Debug values:\n");
for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
if (i % 4 == 0)
len += snprintf(buf + len, DMA_BUF_LEN - len, "\n");
val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
len += snprintf(buf + len, DMA_BUF_LEN - len, "%d: %08x ",
i, val[i]);
}
len += snprintf(buf + len, DMA_BUF_LEN - len, "\n\n");
len += snprintf(buf + len, DMA_BUF_LEN - 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, DMA_BUF_LEN - 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, DMA_BUF_LEN - len, "\n");
len += snprintf(buf + len, DMA_BUF_LEN - len,
"qcu_stitch state: %2x qcu_fetch state: %2x\n",
(val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
len += snprintf(buf + len, DMA_BUF_LEN - len,
"qcu_complete state: %2x dcu_complete state: %2x\n",
(val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
len += snprintf(buf + len, DMA_BUF_LEN - len,
"dcu_arb state: %2x dcu_fp state: %2x\n",
(val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
len += snprintf(buf + len, DMA_BUF_LEN - len,
"chan_idle_dur: %3d chan_idle_dur_valid: %1d\n",
(val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
len += snprintf(buf + len, DMA_BUF_LEN - len,
"txfifo_valid_0: %1d txfifo_valid_1: %1d\n",
(val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
len += snprintf(buf + len, DMA_BUF_LEN - len,
"txfifo_dcu_num_0: %2d txfifo_dcu_num_1: %2d\n",
(val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
len += snprintf(buf + len, DMA_BUF_LEN - len, "pcu observe: 0x%x\n",
REG_READ_D(ah, AR_OBS_BUS_1));
len += snprintf(buf + len, DMA_BUF_LEN - len,
"AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
ath9k_ps_restore(sc);
if (len > DMA_BUF_LEN)
len = DMA_BUF_LEN;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static const struct file_operations fops_dma = {
.read = read_file_dma,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status)
{
if (status)
sc->debug.stats.istats.total++;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
if (status & ATH9K_INT_RXLP)
sc->debug.stats.istats.rxlp++;
if (status & ATH9K_INT_RXHP)
sc->debug.stats.istats.rxhp++;
if (status & ATH9K_INT_BB_WATCHDOG)
sc->debug.stats.istats.bb_watchdog++;
} else {
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++;
if (status & ATH9K_INT_TSFOOR)
sc->debug.stats.istats.tsfoor++;
}
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;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RXLP", sc->debug.stats.istats.rxlp);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "RXHP", sc->debug.stats.istats.rxhp);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "WATCHDOG",
sc->debug.stats.istats.bb_watchdog);
} else {
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", "TSFOOR", sc->debug.stats.istats.tsfoor);
len += snprintf(buf + len, sizeof(buf) - len,
"%8s: %10u\n", "TOTAL", sc->debug.stats.istats.total);
if (len > sizeof(buf))
len = sizeof(buf);
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,
.llseek = default_llseek,
};
static const char *channel_type_str(enum nl80211_channel_type t)
{
switch (t) {
case NL80211_CHAN_NO_HT:
return "no ht";
case NL80211_CHAN_HT20:
return "ht20";
case NL80211_CHAN_HT40MINUS:
return "ht40-";
case NL80211_CHAN_HT40PLUS:
return "ht40+";
default:
return "???";
}
}
static ssize_t read_file_wiphy(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ieee80211_channel *chan = sc->hw->conf.channel;
struct ieee80211_conf *conf = &(sc->hw->conf);
char buf[512];
unsigned int len = 0;
u8 addr[ETH_ALEN];
u32 tmp;
len += snprintf(buf + len, sizeof(buf) - len,
"%s (chan=%d center-freq: %d MHz channel-type: %d (%s))\n",
wiphy_name(sc->hw->wiphy),
ieee80211_frequency_to_channel(chan->center_freq),
chan->center_freq,
conf->channel_type,
channel_type_str(conf->channel_type));
ath9k_ps_wakeup(sc);
put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_STA_ID0), addr);
put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_STA_ID1) & 0xffff, addr + 4);
len += snprintf(buf + len, sizeof(buf) - len,
"addr: %pM\n", addr);
put_unaligned_le32(REG_READ_D(sc->sc_ah, AR_BSSMSKL), addr);
put_unaligned_le16(REG_READ_D(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4);
len += snprintf(buf + len, sizeof(buf) - len,
"addrmask: %pM\n", addr);
tmp = ath9k_hw_getrxfilter(sc->sc_ah);
ath9k_ps_restore(sc);
len += snprintf(buf + len, sizeof(buf) - len,
"rfilt: 0x%x", tmp);
if (tmp & ATH9K_RX_FILTER_UCAST)
len += snprintf(buf + len, sizeof(buf) - len, " UCAST");
if (tmp & ATH9K_RX_FILTER_MCAST)
len += snprintf(buf + len, sizeof(buf) - len, " MCAST");
if (tmp & ATH9K_RX_FILTER_BCAST)
len += snprintf(buf + len, sizeof(buf) - len, " BCAST");
if (tmp & ATH9K_RX_FILTER_CONTROL)
len += snprintf(buf + len, sizeof(buf) - len, " CONTROL");
if (tmp & ATH9K_RX_FILTER_BEACON)
len += snprintf(buf + len, sizeof(buf) - len, " BEACON");
if (tmp & ATH9K_RX_FILTER_PROM)
len += snprintf(buf + len, sizeof(buf) - len, " PROM");
if (tmp & ATH9K_RX_FILTER_PROBEREQ)
len += snprintf(buf + len, sizeof(buf) - len, " PROBEREQ");
if (tmp & ATH9K_RX_FILTER_PHYERR)
len += snprintf(buf + len, sizeof(buf) - len, " PHYERR");
if (tmp & ATH9K_RX_FILTER_MYBEACON)
len += snprintf(buf + len, sizeof(buf) - len, " MYBEACON");
if (tmp & ATH9K_RX_FILTER_COMP_BAR)
len += snprintf(buf + len, sizeof(buf) - len, " COMP_BAR");
if (tmp & ATH9K_RX_FILTER_PSPOLL)
len += snprintf(buf + len, sizeof(buf) - len, " PSPOLL");
if (tmp & ATH9K_RX_FILTER_PHYRADAR)
len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR");
if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n");
else
len += snprintf(buf + len, sizeof(buf) - len, "\n");
if (len > sizeof(buf))
len = sizeof(buf);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static const struct file_operations fops_wiphy = {
.read = read_file_wiphy,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
#define PR_QNUM(_n) sc->tx.txq_map[_n]->axq_qnum
#define PR(str, elem) \
do { \
len += snprintf(buf + len, size - len, \
"%s%13u%11u%10u%10u\n", str, \
sc->debug.stats.txstats[PR_QNUM(WME_AC_BE)].elem, \
sc->debug.stats.txstats[PR_QNUM(WME_AC_BK)].elem, \
sc->debug.stats.txstats[PR_QNUM(WME_AC_VI)].elem, \
sc->debug.stats.txstats[PR_QNUM(WME_AC_VO)].elem); \
if (len >= size) \
goto done; \
} while(0)
#define PRX(str, elem) \
do { \
len += snprintf(buf + len, size - len, \
"%s%13u%11u%10u%10u\n", str, \
(unsigned int)(sc->tx.txq_map[WME_AC_BE]->elem), \
(unsigned int)(sc->tx.txq_map[WME_AC_BK]->elem), \
(unsigned int)(sc->tx.txq_map[WME_AC_VI]->elem), \
(unsigned int)(sc->tx.txq_map[WME_AC_VO]->elem)); \
if (len >= size) \
goto done; \
} while(0)
#define PRQLE(str, elem) \
do { \
len += snprintf(buf + len, size - len, \
"%s%13i%11i%10i%10i\n", str, \
list_empty(&sc->tx.txq_map[WME_AC_BE]->elem), \
list_empty(&sc->tx.txq_map[WME_AC_BK]->elem), \
list_empty(&sc->tx.txq_map[WME_AC_VI]->elem), \
list_empty(&sc->tx.txq_map[WME_AC_VO]->elem)); \
if (len >= size) \
goto done; \
} while (0)
static ssize_t read_file_xmit(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
char *buf;
unsigned int len = 0, size = 8000;
int i;
ssize_t retval = 0;
char tmp[32];
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
len += sprintf(buf, "Num-Tx-Queues: %i tx-queues-setup: 0x%x"
" poll-work-seen: %u\n"
"%30s %10s%10s%10s\n\n",
ATH9K_NUM_TX_QUEUES, sc->tx.txqsetup,
sc->tx_complete_poll_work_seen,
"BE", "BK", "VI", "VO");
PR("MPDUs Queued: ", queued);
PR("MPDUs Completed: ", completed);
PR("MPDUs XRetried: ", xretries);
PR("Aggregates: ", a_aggr);
PR("AMPDUs Queued HW:", a_queued_hw);
PR("AMPDUs Queued SW:", a_queued_sw);
PR("AMPDUs Completed:", a_completed);
PR("AMPDUs Retried: ", a_retries);
PR("AMPDUs XRetried: ", a_xretries);
PR("FIFO Underrun: ", fifo_underrun);
PR("TXOP Exceeded: ", xtxop);
PR("TXTIMER Expiry: ", timer_exp);
PR("DESC CFG Error: ", desc_cfg_err);
PR("DATA Underrun: ", data_underrun);
PR("DELIM Underrun: ", delim_underrun);
PR("TX-Pkts-All: ", tx_pkts_all);
PR("TX-Bytes-All: ", tx_bytes_all);
PR("hw-put-tx-buf: ", puttxbuf);
PR("hw-tx-start: ", txstart);
PR("hw-tx-proc-desc: ", txprocdesc);
len += snprintf(buf + len, size - len,
"%s%11p%11p%10p%10p\n", "txq-memory-address:",
sc->tx.txq_map[WME_AC_BE],
sc->tx.txq_map[WME_AC_BK],
sc->tx.txq_map[WME_AC_VI],
sc->tx.txq_map[WME_AC_VO]);
if (len >= size)
goto done;
PRX("axq-qnum: ", axq_qnum);
PRX("axq-depth: ", axq_depth);
PRX("axq-ampdu_depth: ", axq_ampdu_depth);
PRX("axq-stopped ", stopped);
PRX("tx-in-progress ", axq_tx_inprogress);
PRX("pending-frames ", pending_frames);
PRX("txq_headidx: ", txq_headidx);
PRX("txq_tailidx: ", txq_headidx);
PRQLE("axq_q empty: ", axq_q);
PRQLE("axq_acq empty: ", axq_acq);
for (i = 0; i < ATH_TXFIFO_DEPTH; i++) {
snprintf(tmp, sizeof(tmp) - 1, "txq_fifo[%i] empty: ", i);
PRQLE(tmp, txq_fifo[i]);
}
/* Print out more detailed queue-info */
for (i = 0; i <= WME_AC_BK; i++) {
struct ath_txq *txq = &(sc->tx.txq[i]);
struct ath_atx_ac *ac;
struct ath_atx_tid *tid;
if (len >= size)
goto done;
spin_lock_bh(&txq->axq_lock);
if (!list_empty(&txq->axq_acq)) {
ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac,
list);
len += snprintf(buf + len, size - len,
"txq[%i] first-ac: %p sched: %i\n",
i, ac, ac->sched);
if (list_empty(&ac->tid_q) || (len >= size))
goto done_for;
tid = list_first_entry(&ac->tid_q, struct ath_atx_tid,
list);
len += snprintf(buf + len, size - len,
" first-tid: %p sched: %i paused: %i\n",
tid, tid->sched, tid->paused);
}
done_for:
spin_unlock_bh(&txq->axq_lock);
}
done:
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static ssize_t read_file_stations(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
char *buf;
unsigned int len = 0, size = 64000;
struct ath_node *an = NULL;
ssize_t retval = 0;
int q;
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
len += snprintf(buf + len, size - len,
"Stations:\n"
" tid: addr sched paused buf_q-empty an ac\n"
" ac: addr sched tid_q-empty txq\n");
spin_lock(&sc->nodes_lock);
list_for_each_entry(an, &sc->nodes, list) {
len += snprintf(buf + len, size - len,
"%pM\n", an->sta->addr);
if (len >= size)
goto done;
for (q = 0; q < WME_NUM_TID; q++) {
struct ath_atx_tid *tid = &(an->tid[q]);
len += snprintf(buf + len, size - len,
" tid: %p %s %s %i %p %p\n",
tid, tid->sched ? "sched" : "idle",
tid->paused ? "paused" : "running",
list_empty(&tid->buf_q),
tid->an, tid->ac);
if (len >= size)
goto done;
}
for (q = 0; q < WME_NUM_AC; q++) {
struct ath_atx_ac *ac = &(an->ac[q]);
len += snprintf(buf + len, size - len,
" ac: %p %s %i %p\n",
ac, ac->sched ? "sched" : "idle",
list_empty(&ac->tid_q), ac->txq);
if (len >= size)
goto done;
}
}
done:
spin_unlock(&sc->nodes_lock);
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
static ssize_t read_file_misc(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_hw *ah = sc->sc_ah;
struct ieee80211_hw *hw = sc->hw;
char *buf;
unsigned int len = 0, size = 8000;
ssize_t retval = 0;
const char *tmp;
unsigned int reg;
struct ath9k_vif_iter_data iter_data;
ath9k_calculate_iter_data(hw, NULL, &iter_data);
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
switch (sc->sc_ah->opmode) {
case NL80211_IFTYPE_ADHOC:
tmp = "ADHOC";
break;
case NL80211_IFTYPE_MESH_POINT:
tmp = "MESH";
break;
case NL80211_IFTYPE_AP:
tmp = "AP";
break;
case NL80211_IFTYPE_STATION:
tmp = "STATION";
break;
default:
tmp = "???";
break;
}
ath9k_ps_wakeup(sc);
len += snprintf(buf + len, size - len,
"curbssid: %pM\n"
"OP-Mode: %s(%i)\n"
"Beacon-Timer-Register: 0x%x\n",
common->curbssid,
tmp, (int)(sc->sc_ah->opmode),
REG_READ(ah, AR_BEACON_PERIOD));
reg = REG_READ(ah, AR_TIMER_MODE);
ath9k_ps_restore(sc);
len += snprintf(buf + len, size - len, "Timer-Mode-Register: 0x%x (",
reg);
if (reg & AR_TBTT_TIMER_EN)
len += snprintf(buf + len, size - len, "TBTT ");
if (reg & AR_DBA_TIMER_EN)
len += snprintf(buf + len, size - len, "DBA ");
if (reg & AR_SWBA_TIMER_EN)
len += snprintf(buf + len, size - len, "SWBA ");
if (reg & AR_HCF_TIMER_EN)
len += snprintf(buf + len, size - len, "HCF ");
if (reg & AR_TIM_TIMER_EN)
len += snprintf(buf + len, size - len, "TIM ");
if (reg & AR_DTIM_TIMER_EN)
len += snprintf(buf + len, size - len, "DTIM ");
len += snprintf(buf + len, size - len, ")\n");
reg = sc->sc_ah->imask;
len += snprintf(buf + len, size - len, "imask: 0x%x (", reg);
if (reg & ATH9K_INT_SWBA)
len += snprintf(buf + len, size - len, "SWBA ");
if (reg & ATH9K_INT_BMISS)
len += snprintf(buf + len, size - len, "BMISS ");
if (reg & ATH9K_INT_CST)
len += snprintf(buf + len, size - len, "CST ");
if (reg & ATH9K_INT_RX)
len += snprintf(buf + len, size - len, "RX ");
if (reg & ATH9K_INT_RXHP)
len += snprintf(buf + len, size - len, "RXHP ");
if (reg & ATH9K_INT_RXLP)
len += snprintf(buf + len, size - len, "RXLP ");
if (reg & ATH9K_INT_BB_WATCHDOG)
len += snprintf(buf + len, size - len, "BB_WATCHDOG ");
/* there are other IRQs if one wanted to add them. */
len += snprintf(buf + len, size - len, ")\n");
len += snprintf(buf + len, size - len,
"VIF Counts: AP: %i STA: %i MESH: %i WDS: %i"
" ADHOC: %i OTHER: %i nvifs: %hi beacon-vifs: %hi\n",
iter_data.naps, iter_data.nstations, iter_data.nmeshes,
iter_data.nwds, iter_data.nadhocs, iter_data.nothers,
sc->nvifs, sc->nbcnvifs);
len += snprintf(buf + len, size - len,
"Calculated-BSSID-Mask: %pM\n",
iter_data.mask);
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
}
void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
struct ath_tx_status *ts, struct ath_txq *txq)
{
int qnum = txq->axq_qnum;
TX_STAT_INC(qnum, tx_pkts_all);
sc->debug.stats.txstats[qnum].tx_bytes_all += bf->bf_mpdu->len;
if (bf_isampdu(bf)) {
if (bf_isxretried(bf))
TX_STAT_INC(qnum, a_xretries);
else
TX_STAT_INC(qnum, a_completed);
} else {
if (bf_isxretried(bf))
TX_STAT_INC(qnum, xretries);
else
TX_STAT_INC(qnum, completed);
}
if (ts->ts_status & ATH9K_TXERR_FIFO)
TX_STAT_INC(qnum, fifo_underrun);
if (ts->ts_status & ATH9K_TXERR_XTXOP)
TX_STAT_INC(qnum, xtxop);
if (ts->ts_status & ATH9K_TXERR_TIMER_EXPIRED)
TX_STAT_INC(qnum, timer_exp);
if (ts->ts_flags & ATH9K_TX_DESC_CFG_ERR)
TX_STAT_INC(qnum, desc_cfg_err);
if (ts->ts_flags & ATH9K_TX_DATA_UNDERRUN)
TX_STAT_INC(qnum, data_underrun);
if (ts->ts_flags & ATH9K_TX_DELIM_UNDERRUN)
TX_STAT_INC(qnum, delim_underrun);
}
static const struct file_operations fops_xmit = {
.read = read_file_xmit,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static const struct file_operations fops_stations = {
.read = read_file_stations,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static const struct file_operations fops_misc = {
.read = read_file_misc,
.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)
{
#define PHY_ERR(s, p) \
len += snprintf(buf + len, size - len, "%18s : %10u\n", s, \
sc->debug.stats.rxstats.phy_err_stats[p]);
struct ath_softc *sc = file->private_data;
char *buf;
unsigned int len = 0, size = 1400;
ssize_t retval = 0;
buf = kzalloc(size, GFP_KERNEL);
if (buf == NULL)
return -ENOMEM;
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "CRC ERR",
sc->debug.stats.rxstats.crc_err);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "DECRYPT CRC ERR",
sc->debug.stats.rxstats.decrypt_crc_err);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "PHY ERR",
sc->debug.stats.rxstats.phy_err);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "MIC ERR",
sc->debug.stats.rxstats.mic_err);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "PRE-DELIM CRC ERR",
sc->debug.stats.rxstats.pre_delim_crc_err);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "POST-DELIM CRC ERR",
sc->debug.stats.rxstats.post_delim_crc_err);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "DECRYPT BUSY ERR",
sc->debug.stats.rxstats.decrypt_busy_err);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "RSSI-CTL0",
sc->debug.stats.rxstats.rs_rssi_ctl0);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "RSSI-CTL1",
sc->debug.stats.rxstats.rs_rssi_ctl1);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "RSSI-CTL2",
sc->debug.stats.rxstats.rs_rssi_ctl2);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "RSSI-EXT0",
sc->debug.stats.rxstats.rs_rssi_ext0);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "RSSI-EXT1",
sc->debug.stats.rxstats.rs_rssi_ext1);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "RSSI-EXT2",
sc->debug.stats.rxstats.rs_rssi_ext2);
len += snprintf(buf + len, size - len,
"%18s : %10d\n", "Rx Antenna",
sc->debug.stats.rxstats.rs_antenna);
PHY_ERR("UNDERRUN", ATH9K_PHYERR_UNDERRUN);
PHY_ERR("TIMING", ATH9K_PHYERR_TIMING);
PHY_ERR("PARITY", ATH9K_PHYERR_PARITY);
PHY_ERR("RATE", ATH9K_PHYERR_RATE);
PHY_ERR("LENGTH", ATH9K_PHYERR_LENGTH);
PHY_ERR("RADAR", ATH9K_PHYERR_RADAR);
PHY_ERR("SERVICE", ATH9K_PHYERR_SERVICE);
PHY_ERR("TOR", ATH9K_PHYERR_TOR);
PHY_ERR("OFDM-TIMING", ATH9K_PHYERR_OFDM_TIMING);
PHY_ERR("OFDM-SIGNAL-PARITY", ATH9K_PHYERR_OFDM_SIGNAL_PARITY);
PHY_ERR("OFDM-RATE", ATH9K_PHYERR_OFDM_RATE_ILLEGAL);
PHY_ERR("OFDM-LENGTH", ATH9K_PHYERR_OFDM_LENGTH_ILLEGAL);
PHY_ERR("OFDM-POWER-DROP", ATH9K_PHYERR_OFDM_POWER_DROP);
PHY_ERR("OFDM-SERVICE", ATH9K_PHYERR_OFDM_SERVICE);
PHY_ERR("OFDM-RESTART", ATH9K_PHYERR_OFDM_RESTART);
PHY_ERR("FALSE-RADAR-EXT", ATH9K_PHYERR_FALSE_RADAR_EXT);
PHY_ERR("CCK-TIMING", ATH9K_PHYERR_CCK_TIMING);
PHY_ERR("CCK-HEADER-CRC", ATH9K_PHYERR_CCK_HEADER_CRC);
PHY_ERR("CCK-RATE", ATH9K_PHYERR_CCK_RATE_ILLEGAL);
PHY_ERR("CCK-SERVICE", ATH9K_PHYERR_CCK_SERVICE);
PHY_ERR("CCK-RESTART", ATH9K_PHYERR_CCK_RESTART);
PHY_ERR("CCK-LENGTH", ATH9K_PHYERR_CCK_LENGTH_ILLEGAL);
PHY_ERR("CCK-POWER-DROP", ATH9K_PHYERR_CCK_POWER_DROP);
PHY_ERR("HT-CRC", ATH9K_PHYERR_HT_CRC_ERROR);
PHY_ERR("HT-LENGTH", ATH9K_PHYERR_HT_LENGTH_ILLEGAL);
PHY_ERR("HT-RATE", ATH9K_PHYERR_HT_RATE_ILLEGAL);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "RX-Pkts-All",
sc->debug.stats.rxstats.rx_pkts_all);
len += snprintf(buf + len, size - len,
"%18s : %10u\n", "RX-Bytes-All",
sc->debug.stats.rxstats.rx_bytes_all);
if (len > size)
len = size;
retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);
return retval;
#undef PHY_ERR
}
void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
{
#define RX_STAT_INC(c) sc->debug.stats.rxstats.c++
#define RX_PHY_ERR_INC(c) sc->debug.stats.rxstats.phy_err_stats[c]++
u32 phyerr;
RX_STAT_INC(rx_pkts_all);
sc->debug.stats.rxstats.rx_bytes_all += rs->rs_datalen;
if (rs->rs_status & ATH9K_RXERR_CRC)
RX_STAT_INC(crc_err);
if (rs->rs_status & ATH9K_RXERR_DECRYPT)
RX_STAT_INC(decrypt_crc_err);
if (rs->rs_status & ATH9K_RXERR_MIC)
RX_STAT_INC(mic_err);
if (rs->rs_status & ATH9K_RX_DELIM_CRC_PRE)
RX_STAT_INC(pre_delim_crc_err);
if (rs->rs_status & ATH9K_RX_DELIM_CRC_POST)
RX_STAT_INC(post_delim_crc_err);
if (rs->rs_status & ATH9K_RX_DECRYPT_BUSY)
RX_STAT_INC(decrypt_busy_err);
if (rs->rs_status & ATH9K_RXERR_PHY) {
RX_STAT_INC(phy_err);
phyerr = rs->rs_phyerr & 0x24;
RX_PHY_ERR_INC(phyerr);
}
sc->debug.stats.rxstats.rs_rssi_ctl0 = rs->rs_rssi_ctl0;
sc->debug.stats.rxstats.rs_rssi_ctl1 = rs->rs_rssi_ctl1;
sc->debug.stats.rxstats.rs_rssi_ctl2 = rs->rs_rssi_ctl2;
sc->debug.stats.rxstats.rs_rssi_ext0 = rs->rs_rssi_ext0;
sc->debug.stats.rxstats.rs_rssi_ext1 = rs->rs_rssi_ext1;
sc->debug.stats.rxstats.rs_rssi_ext2 = rs->rs_rssi_ext2;
sc->debug.stats.rxstats.rs_antenna = rs->rs_antenna;
#undef RX_STAT_INC
#undef RX_PHY_ERR_INC
}
static const struct file_operations fops_recv = {
.read = read_file_recv,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_regidx(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
char buf[32];
unsigned int len;
len = sprintf(buf, "0x%08x\n", sc->debug.regidx);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t write_file_regidx(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
unsigned long regidx;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &regidx))
return -EINVAL;
sc->debug.regidx = regidx;
return count;
}
static const struct file_operations fops_regidx = {
.read = read_file_regidx,
.write = write_file_regidx,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
static ssize_t read_file_regval(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[32];
unsigned int len;
u32 regval;
ath9k_ps_wakeup(sc);
regval = REG_READ_D(ah, sc->debug.regidx);
ath9k_ps_restore(sc);
len = sprintf(buf, "0x%08x\n", regval);
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t write_file_regval(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct ath_softc *sc = file->private_data;
struct ath_hw *ah = sc->sc_ah;
unsigned long regval;
char buf[32];
ssize_t len;
len = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, len))
return -EFAULT;
buf[len] = '\0';
if (strict_strtoul(buf, 0, &regval))
return -EINVAL;
ath9k_ps_wakeup(sc);
REG_WRITE_D(ah, sc->debug.regidx, regval);
ath9k_ps_restore(sc);
return count;
}
static const struct file_operations fops_regval = {
.read = read_file_regval,
.write = write_file_regval,
.open = ath9k_debugfs_open,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
#define REGDUMP_LINE_SIZE 20
static int open_file_regdump(struct inode *inode, struct file *file)
{
struct ath_softc *sc = inode->i_private;
unsigned int len = 0;
u8 *buf;
int i;
unsigned long num_regs, regdump_len, max_reg_offset;
max_reg_offset = AR_SREV_9300_20_OR_LATER(sc->sc_ah) ? 0x16bd4 : 0xb500;
num_regs = max_reg_offset / 4 + 1;
regdump_len = num_regs * REGDUMP_LINE_SIZE + 1;
buf = vmalloc(regdump_len);
if (!buf)
return -ENOMEM;
ath9k_ps_wakeup(sc);
for (i = 0; i < num_regs; i++)
len += scnprintf(buf + len, regdump_len - len,
"0x%06x 0x%08x\n", i << 2, REG_READ(sc->sc_ah, i << 2));
ath9k_ps_restore(sc);
file->private_data = buf;
return 0;
}
static const struct file_operations fops_regdump = {
.open = open_file_regdump,
.read = ath9k_debugfs_read_buf,
.release = ath9k_debugfs_release_buf,
.owner = THIS_MODULE,
.llseek = default_llseek,/* read accesses f_pos */
};
int ath9k_init_debug(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);
struct ath_softc *sc = (struct ath_softc *) common->priv;
sc->debug.debugfs_phy = debugfs_create_dir("ath9k",
sc->hw->wiphy->debugfsdir);
if (!sc->debug.debugfs_phy)
return -ENOMEM;
#ifdef CONFIG_ATH_DEBUG
debugfs_create_file("debug", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_debug);
#endif
debugfs_create_file("dma", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_dma);
debugfs_create_file("interrupt", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_interrupt);
debugfs_create_file("wiphy", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_wiphy);
debugfs_create_file("xmit", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_xmit);
debugfs_create_file("stations", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_stations);
debugfs_create_file("misc", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_misc);
debugfs_create_file("recv", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_recv);
debugfs_create_file("rx_chainmask", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_rx_chainmask);
debugfs_create_file("tx_chainmask", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_tx_chainmask);
debugfs_create_file("disable_ani", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, sc, &fops_disable_ani);
debugfs_create_file("regidx", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_regidx);
debugfs_create_file("regval", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
sc, &fops_regval);
debugfs_create_bool("ignore_extcca", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy,
&ah->config.cwm_ignore_extcca);
debugfs_create_file("regdump", S_IRUSR, sc->debug.debugfs_phy, sc,
&fops_regdump);
debugfs_create_u32("gpio_mask", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, &sc->sc_ah->gpio_mask);
debugfs_create_u32("gpio_val", S_IRUSR | S_IWUSR,
sc->debug.debugfs_phy, &sc->sc_ah->gpio_val);
sc->debug.regidx = 0;
return 0;
}
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