diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/debug.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/debug.c | 562 |
1 files changed, 562 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c new file mode 100644 index 000000000000..97df20cbf528 --- /dev/null +++ b/drivers/net/wireless/ath/ath9k/debug.c @@ -0,0 +1,562 @@ +/* + * Copyright (c) 2008-2009 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 <asm/unaligned.h> + +#include "ath9k.h" + +static unsigned int ath9k_debug = DBG_DEFAULT; +module_param_named(debug, ath9k_debug, uint, 0); + +static struct dentry *ath9k_debugfs_root; + +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, u8 per) +{ + 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; + sc->debug.stats.n_rcstats[idx].per = per; + } +} + +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 %6s\n\n", "Rate", "Success", + "Retries", "XRetries", "PER"); + + for (i = 0; i <= 15; i++) { + len += snprintf(buf + len, sizeof(buf) - len, + "%5s%3d: %8u %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, + sc->debug.stats.n_rcstats[i].per); + } + + 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 (sc->cur_rate_table == NULL) + return 0; + + 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 +}; + +static const char * ath_wiphy_state_str(enum ath_wiphy_state state) +{ + switch (state) { + case ATH_WIPHY_INACTIVE: + return "INACTIVE"; + case ATH_WIPHY_ACTIVE: + return "ACTIVE"; + case ATH_WIPHY_PAUSING: + return "PAUSING"; + case ATH_WIPHY_PAUSED: + return "PAUSED"; + case ATH_WIPHY_SCAN: + return "SCAN"; + } + 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; + char buf[512]; + unsigned int len = 0; + int i; + u8 addr[ETH_ALEN]; + + len += snprintf(buf + len, sizeof(buf) - len, + "primary: %s (%s chan=%d ht=%d)\n", + wiphy_name(sc->pri_wiphy->hw->wiphy), + ath_wiphy_state_str(sc->pri_wiphy->state), + sc->pri_wiphy->chan_idx, sc->pri_wiphy->chan_is_ht); + for (i = 0; i < sc->num_sec_wiphy; i++) { + struct ath_wiphy *aphy = sc->sec_wiphy[i]; + if (aphy == NULL) + continue; + len += snprintf(buf + len, sizeof(buf) - len, + "secondary: %s (%s chan=%d ht=%d)\n", + wiphy_name(aphy->hw->wiphy), + ath_wiphy_state_str(aphy->state), + aphy->chan_idx, aphy->chan_is_ht); + } + + put_unaligned_le32(REG_READ(sc->sc_ah, AR_STA_ID0), addr); + put_unaligned_le16(REG_READ(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(sc->sc_ah, AR_BSSMSKL), addr); + put_unaligned_le16(REG_READ(sc->sc_ah, AR_BSSMSKU) & 0xffff, addr + 4); + len += snprintf(buf + len, sizeof(buf) - len, + "addrmask: %pM\n", addr); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static struct ath_wiphy * get_wiphy(struct ath_softc *sc, const char *name) +{ + int i; + if (strcmp(name, wiphy_name(sc->pri_wiphy->hw->wiphy)) == 0) + return sc->pri_wiphy; + for (i = 0; i < sc->num_sec_wiphy; i++) { + struct ath_wiphy *aphy = sc->sec_wiphy[i]; + if (aphy && strcmp(name, wiphy_name(aphy->hw->wiphy)) == 0) + return aphy; + } + return NULL; +} + +static int del_wiphy(struct ath_softc *sc, const char *name) +{ + struct ath_wiphy *aphy = get_wiphy(sc, name); + if (!aphy) + return -ENOENT; + return ath9k_wiphy_del(aphy); +} + +static int pause_wiphy(struct ath_softc *sc, const char *name) +{ + struct ath_wiphy *aphy = get_wiphy(sc, name); + if (!aphy) + return -ENOENT; + return ath9k_wiphy_pause(aphy); +} + +static int unpause_wiphy(struct ath_softc *sc, const char *name) +{ + struct ath_wiphy *aphy = get_wiphy(sc, name); + if (!aphy) + return -ENOENT; + return ath9k_wiphy_unpause(aphy); +} + +static int select_wiphy(struct ath_softc *sc, const char *name) +{ + struct ath_wiphy *aphy = get_wiphy(sc, name); + if (!aphy) + return -ENOENT; + return ath9k_wiphy_select(aphy); +} + +static int schedule_wiphy(struct ath_softc *sc, const char *msec) +{ + ath9k_wiphy_set_scheduler(sc, simple_strtoul(msec, NULL, 0)); + return 0; +} + +static ssize_t write_file_wiphy(struct file *file, const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath_softc *sc = file->private_data; + char buf[50]; + size_t len; + + len = min(count, sizeof(buf) - 1); + if (copy_from_user(buf, user_buf, len)) + return -EFAULT; + buf[len] = '\0'; + if (len > 0 && buf[len - 1] == '\n') + buf[len - 1] = '\0'; + + if (strncmp(buf, "add", 3) == 0) { + int res = ath9k_wiphy_add(sc); + if (res < 0) + return res; + } else if (strncmp(buf, "del=", 4) == 0) { + int res = del_wiphy(sc, buf + 4); + if (res < 0) + return res; + } else if (strncmp(buf, "pause=", 6) == 0) { + int res = pause_wiphy(sc, buf + 6); + if (res < 0) + return res; + } else if (strncmp(buf, "unpause=", 8) == 0) { + int res = unpause_wiphy(sc, buf + 8); + if (res < 0) + return res; + } else if (strncmp(buf, "select=", 7) == 0) { + int res = select_wiphy(sc, buf + 7); + if (res < 0) + return res; + } else if (strncmp(buf, "schedule=", 9) == 0) { + int res = schedule_wiphy(sc, buf + 9); + if (res < 0) + return res; + } else + return -EOPNOTSUPP; + + return count; +} + +static const struct file_operations fops_wiphy = { + .read = read_file_wiphy, + .write = write_file_wiphy, + .open = ath9k_debugfs_open, + .owner = THIS_MODULE +}; + + +int ath9k_init_debug(struct ath_softc *sc) +{ + sc->debug.debug_mask = ath9k_debug; + + if (!ath9k_debugfs_root) + return -ENOENT; + + sc->debug.debugfs_phy = debugfs_create_dir(wiphy_name(sc->hw->wiphy), + ath9k_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; + + sc->debug.debugfs_wiphy = debugfs_create_file( + "wiphy", S_IRUGO | S_IWUSR, sc->debug.debugfs_phy, sc, + &fops_wiphy); + if (!sc->debug.debugfs_wiphy) + goto err; + + return 0; +err: + ath9k_exit_debug(sc); + return -ENOMEM; +} + +void ath9k_exit_debug(struct ath_softc *sc) +{ + debugfs_remove(sc->debug.debugfs_wiphy); + debugfs_remove(sc->debug.debugfs_rcstat); + debugfs_remove(sc->debug.debugfs_interrupt); + debugfs_remove(sc->debug.debugfs_dma); + debugfs_remove(sc->debug.debugfs_phy); +} + +int ath9k_debug_create_root(void) +{ + ath9k_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); + if (!ath9k_debugfs_root) + return -ENOENT; + + return 0; +} + +void ath9k_debug_remove_root(void) +{ + debugfs_remove(ath9k_debugfs_root); + ath9k_debugfs_root = NULL; +} |
