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path: root/drivers/net/wireless/ath/ath9k/debug.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/debug.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/debug.c561
1 files changed, 561 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..6d20725d6451
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -0,0 +1,561 @@
+/*
+ * 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_debug(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 = snprintf(buf, sizeof(buf), "0x%08x\n", sc->debug.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;
+ unsigned long mask;
+ char buf[32];
+ ssize_t len;
+
+ len = min(count, sizeof(buf) - 1);
+ if (copy_from_user(buf, user_buf, len))
+ return -EINVAL;
+
+ buf[len] = '\0';
+ if (strict_strtoul(buf, 0, &mask))
+ return -EINVAL;
+
+ sc->debug.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
+};
+
+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
+};
+
+void ath_debug_stat_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;
+ struct ath_rc_stats *stats;
+
+ tx_info_priv = ATH_TX_INFO_PRIV(tx_info);
+ final_ts_idx = tx_info_priv->tx.ts_rateindex;
+ idx = rates[final_ts_idx].idx;
+ stats = &sc->debug.stats.rcstats[idx];
+ stats->success++;
+}
+
+void ath_debug_stat_retries(struct ath_softc *sc, int rix,
+ int xretries, int retries, u8 per)
+{
+ struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix];
+
+ stats->xretries += xretries;
+ stats->retries += retries;
+ stats->per = per;
+}
+
+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;
+ char *buf;
+ unsigned int len = 0, max;
+ int i = 0;
+ ssize_t retval;
+
+ if (sc->cur_rate_table == NULL)
+ return 0;
+
+ max = 80 + sc->cur_rate_table->rate_cnt * 64;
+ buf = kmalloc(max + 1, GFP_KERNEL);
+ if (buf == NULL)
+ return 0;
+ buf[max] = 0;
+
+ len += sprintf(buf, "%5s %15s %8s %9s %3s\n\n", "Rate", "Success",
+ "Retries", "XRetries", "PER");
+
+ for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
+ u32 ratekbps = sc->cur_rate_table->info[i].ratekbps;
+ struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i];
+
+ len += snprintf(buf + len, max - len,
+ "%3u.%d: %8u %8u %8u %8u\n", ratekbps / 1000,
+ (ratekbps % 1000) / 100, stats->success,
+ stats->retries, stats->xretries,
+ stats->per);
+ }
+
+ retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+ kfree(buf);
+ return retval;
+}
+
+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_debug = debugfs_create_file("debug",
+ S_IRUGO | S_IWUSR, sc->debug.debugfs_phy, sc, &fops_debug);
+ if (!sc->debug.debugfs_debug)
+ 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_debug);
+ 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;
+}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.