Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / net / wireless / ath / ath9k / debug.c
diff --git a/kernel/drivers/net/wireless/ath/ath9k/debug.c b/kernel/drivers/net/wireless/ath/ath9k/debug.c
new file mode 100644 (file)
index 0000000..dbf8f49
--- /dev/null
@@ -0,0 +1,1395 @@
+/*
+ * 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 <linux/export.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))
+
+void ath9k_debug_sync_cause(struct ath_softc *sc, u32 sync_cause)
+{
+       if (sync_cause)
+               sc->debug.stats.istats.sync_cause_all++;
+       if (sync_cause & AR_INTR_SYNC_RTC_IRQ)
+               sc->debug.stats.istats.sync_rtc_irq++;
+       if (sync_cause & AR_INTR_SYNC_MAC_IRQ)
+               sc->debug.stats.istats.sync_mac_irq++;
+       if (sync_cause & AR_INTR_SYNC_EEPROM_ILLEGAL_ACCESS)
+               sc->debug.stats.istats.eeprom_illegal_access++;
+       if (sync_cause & AR_INTR_SYNC_APB_TIMEOUT)
+               sc->debug.stats.istats.apb_timeout++;
+       if (sync_cause & AR_INTR_SYNC_PCI_MODE_CONFLICT)
+               sc->debug.stats.istats.pci_mode_conflict++;
+       if (sync_cause & AR_INTR_SYNC_HOST1_FATAL)
+               sc->debug.stats.istats.host1_fatal++;
+       if (sync_cause & AR_INTR_SYNC_HOST1_PERR)
+               sc->debug.stats.istats.host1_perr++;
+       if (sync_cause & AR_INTR_SYNC_TRCV_FIFO_PERR)
+               sc->debug.stats.istats.trcv_fifo_perr++;
+       if (sync_cause & AR_INTR_SYNC_RADM_CPL_EP)
+               sc->debug.stats.istats.radm_cpl_ep++;
+       if (sync_cause & AR_INTR_SYNC_RADM_CPL_DLLP_ABORT)
+               sc->debug.stats.istats.radm_cpl_dllp_abort++;
+       if (sync_cause & AR_INTR_SYNC_RADM_CPL_TLP_ABORT)
+               sc->debug.stats.istats.radm_cpl_tlp_abort++;
+       if (sync_cause & AR_INTR_SYNC_RADM_CPL_ECRC_ERR)
+               sc->debug.stats.istats.radm_cpl_ecrc_err++;
+       if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT)
+               sc->debug.stats.istats.radm_cpl_timeout++;
+       if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT)
+               sc->debug.stats.istats.local_timeout++;
+       if (sync_cause & AR_INTR_SYNC_PM_ACCESS)
+               sc->debug.stats.istats.pm_access++;
+       if (sync_cause & AR_INTR_SYNC_MAC_AWAKE)
+               sc->debug.stats.istats.mac_awake++;
+       if (sync_cause & AR_INTR_SYNC_MAC_ASLEEP)
+               sc->debug.stats.istats.mac_asleep++;
+       if (sync_cause & AR_INTR_SYNC_MAC_SLEEP_ACCESS)
+               sc->debug.stats.istats.mac_sleep_access++;
+}
+
+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 (kstrtoul(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 = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+#endif
+
+#define DMA_BUF_LEN 1024
+
+
+static ssize_t read_file_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);
+       struct ath_hw *ah = sc->sc_ah;
+       unsigned int len = 0;
+       const unsigned int size = 1024;
+       ssize_t retval = 0;
+       char *buf;
+       int i;
+       struct {
+               const char *name;
+               unsigned int val;
+       } ani_info[] = {
+               { "ANI RESET", ah->stats.ast_ani_reset },
+               { "OFDM LEVEL", ah->ani.ofdmNoiseImmunityLevel },
+               { "CCK LEVEL", ah->ani.cckNoiseImmunityLevel },
+               { "SPUR UP", ah->stats.ast_ani_spurup },
+               { "SPUR DOWN", ah->stats.ast_ani_spurup },
+               { "OFDM WS-DET ON", ah->stats.ast_ani_ofdmon },
+               { "OFDM WS-DET OFF", ah->stats.ast_ani_ofdmoff },
+               { "MRC-CCK ON", ah->stats.ast_ani_ccklow },
+               { "MRC-CCK OFF", ah->stats.ast_ani_cckhigh },
+               { "FIR-STEP UP", ah->stats.ast_ani_stepup },
+               { "FIR-STEP DOWN", ah->stats.ast_ani_stepdown },
+               { "INV LISTENTIME", ah->stats.ast_ani_lneg_or_lzero },
+               { "OFDM ERRORS", ah->stats.ast_ani_ofdmerrs },
+               { "CCK ERRORS", ah->stats.ast_ani_cckerrs },
+       };
+
+       buf = kzalloc(size, GFP_KERNEL);
+       if (buf == NULL)
+               return -ENOMEM;
+
+       len += scnprintf(buf + len, size - len, "%15s: %s\n", "ANI",
+                        common->disable_ani ? "DISABLED" : "ENABLED");
+
+       if (common->disable_ani)
+               goto exit;
+
+       for (i = 0; i < ARRAY_SIZE(ani_info); i++)
+               len += scnprintf(buf + len, size - len, "%15s: %u\n",
+                                ani_info[i].name, ani_info[i].val);
+
+exit:
+       if (len > size)
+               len = size;
+
+       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+
+       return retval;
+}
+
+static ssize_t write_file_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 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 (kstrtoul(buf, 0, &ani))
+               return -EINVAL;
+
+       if (ani > 1)
+               return -EINVAL;
+
+       common->disable_ani = !ani;
+
+       if (common->disable_ani) {
+               clear_bit(ATH_OP_ANI_RUN, &common->op_flags);
+               ath_stop_ani(sc);
+       } else {
+               ath_check_ani(sc);
+       }
+
+       return count;
+}
+
+static const struct file_operations fops_ani = {
+       .read = read_file_ani,
+       .write = write_file_ani,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+
+static ssize_t read_file_bt_ant_diversity(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->bt_ant_diversity);
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static ssize_t write_file_bt_ant_diversity(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);
+       struct ath9k_hw_capabilities *pCap = &sc->sc_ah->caps;
+       unsigned long bt_ant_diversity;
+       char buf[32];
+       ssize_t len;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+
+       if (!(pCap->hw_caps & ATH9K_HW_CAP_BT_ANT_DIV))
+               goto exit;
+
+       buf[len] = '\0';
+       if (kstrtoul(buf, 0, &bt_ant_diversity))
+               return -EINVAL;
+
+       common->bt_ant_diversity = !!bt_ant_diversity;
+       ath9k_ps_wakeup(sc);
+       ath9k_hw_set_bt_ant_diversity(sc->sc_ah, common->bt_ant_diversity);
+       ath_dbg(common, CONFIG, "Enable WLAN/BT RX Antenna diversity: %d\n",
+               common->bt_ant_diversity);
+       ath9k_ps_restore(sc);
+exit:
+       return count;
+}
+
+static const struct file_operations fops_bt_ant_diversity = {
+       .read = read_file_bt_ant_diversity,
+       .write = write_file_bt_ant_diversity,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+#endif
+
+void ath9k_debug_stat_ant(struct ath_softc *sc,
+                         struct ath_hw_antcomb_conf *div_ant_conf,
+                         int main_rssi_avg, int alt_rssi_avg)
+{
+       struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
+       struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
+
+       as_main->lna_attempt_cnt[div_ant_conf->main_lna_conf]++;
+       as_alt->lna_attempt_cnt[div_ant_conf->alt_lna_conf]++;
+
+       as_main->rssi_avg = main_rssi_avg;
+       as_alt->rssi_avg = alt_rssi_avg;
+}
+
+static ssize_t read_file_antenna_diversity(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;
+       struct ath9k_hw_capabilities *pCap = &ah->caps;
+       struct ath_antenna_stats *as_main = &sc->debug.stats.ant_stats[ANT_MAIN];
+       struct ath_antenna_stats *as_alt = &sc->debug.stats.ant_stats[ANT_ALT];
+       struct ath_hw_antcomb_conf div_ant_conf;
+       unsigned int len = 0;
+       const unsigned int size = 1024;
+       ssize_t retval = 0;
+       char *buf;
+       static const char *lna_conf_str[4] = {
+               "LNA1_MINUS_LNA2", "LNA2", "LNA1", "LNA1_PLUS_LNA2"
+       };
+
+       buf = kzalloc(size, GFP_KERNEL);
+       if (buf == NULL)
+               return -ENOMEM;
+
+       if (!(pCap->hw_caps & ATH9K_HW_CAP_ANT_DIV_COMB)) {
+               len += scnprintf(buf + len, size - len, "%s\n",
+                                "Antenna Diversity Combining is disabled");
+               goto exit;
+       }
+
+       ath9k_ps_wakeup(sc);
+       ath9k_hw_antdiv_comb_conf_get(ah, &div_ant_conf);
+       len += scnprintf(buf + len, size - len, "Current MAIN config : %s\n",
+                        lna_conf_str[div_ant_conf.main_lna_conf]);
+       len += scnprintf(buf + len, size - len, "Current ALT config  : %s\n",
+                        lna_conf_str[div_ant_conf.alt_lna_conf]);
+       len += scnprintf(buf + len, size - len, "Average MAIN RSSI   : %d\n",
+                        as_main->rssi_avg);
+       len += scnprintf(buf + len, size - len, "Average ALT RSSI    : %d\n\n",
+                        as_alt->rssi_avg);
+       ath9k_ps_restore(sc);
+
+       len += scnprintf(buf + len, size - len, "Packet Receive Cnt:\n");
+       len += scnprintf(buf + len, size - len, "-------------------\n");
+
+       len += scnprintf(buf + len, size - len, "%30s%15s\n",
+                        "MAIN", "ALT");
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "TOTAL COUNT",
+                        as_main->recv_cnt,
+                        as_alt->recv_cnt);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA1",
+                        as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1],
+                        as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1]);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA2",
+                        as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2],
+                        as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA2]);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA1 + LNA2",
+                        as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
+                        as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA1 - LNA2",
+                        as_main->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
+                        as_alt->lna_recv_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
+
+       len += scnprintf(buf + len, size - len, "\nLNA Config Attempts:\n");
+       len += scnprintf(buf + len, size - len, "--------------------\n");
+
+       len += scnprintf(buf + len, size - len, "%30s%15s\n",
+                        "MAIN", "ALT");
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA1",
+                        as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1],
+                        as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1]);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA2",
+                        as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2],
+                        as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA2]);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA1 + LNA2",
+                        as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2],
+                        as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2]);
+       len += scnprintf(buf + len, size - len, "%-14s:%15d%15d\n",
+                        "LNA1 - LNA2",
+                        as_main->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2],
+                        as_alt->lna_attempt_cnt[ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2]);
+
+exit:
+       if (len > size)
+               len = size;
+
+       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+
+       return retval;
+}
+
+static const struct file_operations fops_antenna_diversity = {
+       .read = read_file_antenna_diversity,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+static int read_file_dma(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+       struct ath_hw *ah = sc->sc_ah;
+       u32 val[ATH9K_NUM_DMA_DEBUG_REGS];
+       int i, qcuOffset = 0, dcuOffset = 0;
+       u32 *qcuBase = &val[0], *dcuBase = &val[4];
+
+       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)));
+
+       seq_puts(file, "Raw DMA Debug values:\n");
+
+       for (i = 0; i < ATH9K_NUM_DMA_DEBUG_REGS; i++) {
+               if (i % 4 == 0)
+                       seq_puts(file, "\n");
+
+               val[i] = REG_READ_D(ah, AR_DMADBG_0 + (i * sizeof(u32)));
+               seq_printf(file, "%d: %08x ", i, val[i]);
+       }
+
+       seq_puts(file, "\n\n");
+       seq_puts(file, "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++;
+               }
+
+               seq_printf(file, "%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);
+       }
+
+       seq_puts(file, "\n");
+
+       seq_printf(file, "qcu_stitch state:   %2x    qcu_fetch state:        %2x\n",
+                  (val[3] & 0x003c0000) >> 18, (val[3] & 0x03c00000) >> 22);
+       seq_printf(file, "qcu_complete state: %2x    dcu_complete state:     %2x\n",
+                  (val[3] & 0x1c000000) >> 26, (val[6] & 0x3));
+       seq_printf(file, "dcu_arb state:      %2x    dcu_fp state:           %2x\n",
+                  (val[5] & 0x06000000) >> 25, (val[5] & 0x38000000) >> 27);
+       seq_printf(file, "chan_idle_dur:     %3d    chan_idle_dur_valid:     %1d\n",
+                  (val[6] & 0x000003fc) >> 2, (val[6] & 0x00000400) >> 10);
+       seq_printf(file, "txfifo_valid_0:      %1d    txfifo_valid_1:          %1d\n",
+                  (val[6] & 0x00000800) >> 11, (val[6] & 0x00001000) >> 12);
+       seq_printf(file, "txfifo_dcu_num_0:   %2d    txfifo_dcu_num_1:       %2d\n",
+                  (val[6] & 0x0001e000) >> 13, (val[6] & 0x001e0000) >> 17);
+
+       seq_printf(file, "pcu observe: 0x%x\n", REG_READ_D(ah, AR_OBS_BUS_1));
+       seq_printf(file, "AR_CR: 0x%x\n", REG_READ_D(ah, AR_CR));
+
+       ath9k_ps_restore(sc);
+
+       return 0;
+}
+
+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_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++;
+       if (status & ATH9K_INT_MCI)
+               sc->debug.stats.istats.mci++;
+       if (status & ATH9K_INT_GENTIMER)
+               sc->debug.stats.istats.gen_timer++;
+}
+
+static int read_file_interrupt(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+
+#define PR_IS(a, s)                                            \
+       do {                                                    \
+               seq_printf(file, "%21s: %10u\n", a,             \
+                          sc->debug.stats.istats.s);           \
+       } while (0)
+
+       if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
+               PR_IS("RXLP", rxlp);
+               PR_IS("RXHP", rxhp);
+               PR_IS("WATHDOG", bb_watchdog);
+       } else {
+               PR_IS("RX", rxok);
+       }
+       PR_IS("RXEOL", rxeol);
+       PR_IS("RXORN", rxorn);
+       PR_IS("TX", txok);
+       PR_IS("TXURN", txurn);
+       PR_IS("MIB", mib);
+       PR_IS("RXPHY", rxphyerr);
+       PR_IS("RXKCM", rx_keycache_miss);
+       PR_IS("SWBA", swba);
+       PR_IS("BMISS", bmiss);
+       PR_IS("BNR", bnr);
+       PR_IS("CST", cst);
+       PR_IS("GTT", gtt);
+       PR_IS("TIM", tim);
+       PR_IS("CABEND", cabend);
+       PR_IS("DTIMSYNC", dtimsync);
+       PR_IS("DTIM", dtim);
+       PR_IS("TSFOOR", tsfoor);
+       PR_IS("MCI", mci);
+       PR_IS("GENTIMER", gen_timer);
+       PR_IS("TOTAL", total);
+
+       seq_puts(file, "SYNC_CAUSE stats:\n");
+
+       PR_IS("Sync-All", sync_cause_all);
+       PR_IS("RTC-IRQ", sync_rtc_irq);
+       PR_IS("MAC-IRQ", sync_mac_irq);
+       PR_IS("EEPROM-Illegal-Access", eeprom_illegal_access);
+       PR_IS("APB-Timeout", apb_timeout);
+       PR_IS("PCI-Mode-Conflict", pci_mode_conflict);
+       PR_IS("HOST1-Fatal", host1_fatal);
+       PR_IS("HOST1-Perr", host1_perr);
+       PR_IS("TRCV-FIFO-Perr", trcv_fifo_perr);
+       PR_IS("RADM-CPL-EP", radm_cpl_ep);
+       PR_IS("RADM-CPL-DLLP-Abort", radm_cpl_dllp_abort);
+       PR_IS("RADM-CPL-TLP-Abort", radm_cpl_tlp_abort);
+       PR_IS("RADM-CPL-ECRC-Err", radm_cpl_ecrc_err);
+       PR_IS("RADM-CPL-Timeout", radm_cpl_timeout);
+       PR_IS("Local-Bus-Timeout", local_timeout);
+       PR_IS("PM-Access", pm_access);
+       PR_IS("MAC-Awake", mac_awake);
+       PR_IS("MAC-Asleep", mac_asleep);
+       PR_IS("MAC-Sleep-Access", mac_sleep_access);
+
+       return 0;
+}
+
+static int read_file_xmit(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+
+       seq_printf(file, "%30s %10s%10s%10s\n\n", "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("TXERR Filtered:  ", txerr_filtered);
+       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);
+       PR("TX-Failed:       ", txfailed);
+
+       return 0;
+}
+
+static void print_queue(struct ath_softc *sc, struct ath_txq *txq,
+                       struct seq_file *file)
+{
+       ath_txq_lock(sc, txq);
+
+       seq_printf(file, "%s: %d ", "qnum", txq->axq_qnum);
+       seq_printf(file, "%s: %2d ", "qdepth", txq->axq_depth);
+       seq_printf(file, "%s: %2d ", "ampdu-depth", txq->axq_ampdu_depth);
+       seq_printf(file, "%s: %3d ", "pending", txq->pending_frames);
+       seq_printf(file, "%s: %d\n", "stopped", txq->stopped);
+
+       ath_txq_unlock(sc, txq);
+}
+
+static int read_file_queues(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+       struct ath_txq *txq;
+       int i;
+       static const char *qname[4] = {
+               "VO", "VI", "BE", "BK"
+       };
+
+       for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+               txq = sc->tx.txq_map[i];
+               seq_printf(file, "(%s):  ", qname[i]);
+               print_queue(sc, txq, file);
+       }
+
+       seq_puts(file, "(CAB): ");
+       print_queue(sc, sc->beacon.cabq, file);
+
+       return 0;
+}
+
+static int read_file_misc(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+       struct ath9k_vif_iter_data iter_data;
+       struct ath_chanctx *ctx;
+       unsigned int reg;
+       u32 rxfilter, i;
+
+       seq_printf(file, "BSSID: %pM\n", common->curbssid);
+       seq_printf(file, "BSSID-MASK: %pM\n", common->bssidmask);
+       seq_printf(file, "OPMODE: %s\n",
+                  ath_opmode_to_string(sc->sc_ah->opmode));
+
+       ath9k_ps_wakeup(sc);
+       rxfilter = ath9k_hw_getrxfilter(sc->sc_ah);
+       ath9k_ps_restore(sc);
+
+       seq_printf(file, "RXFILTER: 0x%x", rxfilter);
+
+       if (rxfilter & ATH9K_RX_FILTER_UCAST)
+               seq_puts(file, " UCAST");
+       if (rxfilter & ATH9K_RX_FILTER_MCAST)
+               seq_puts(file, " MCAST");
+       if (rxfilter & ATH9K_RX_FILTER_BCAST)
+               seq_puts(file, " BCAST");
+       if (rxfilter & ATH9K_RX_FILTER_CONTROL)
+               seq_puts(file, " CONTROL");
+       if (rxfilter & ATH9K_RX_FILTER_BEACON)
+               seq_puts(file, " BEACON");
+       if (rxfilter & ATH9K_RX_FILTER_PROM)
+               seq_puts(file, " PROM");
+       if (rxfilter & ATH9K_RX_FILTER_PROBEREQ)
+               seq_puts(file, " PROBEREQ");
+       if (rxfilter & ATH9K_RX_FILTER_PHYERR)
+               seq_puts(file, " PHYERR");
+       if (rxfilter & ATH9K_RX_FILTER_MYBEACON)
+               seq_puts(file, " MYBEACON");
+       if (rxfilter & ATH9K_RX_FILTER_COMP_BAR)
+               seq_puts(file, " COMP_BAR");
+       if (rxfilter & ATH9K_RX_FILTER_PSPOLL)
+               seq_puts(file, " PSPOLL");
+       if (rxfilter & ATH9K_RX_FILTER_PHYRADAR)
+               seq_puts(file, " PHYRADAR");
+       if (rxfilter & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
+               seq_puts(file, " MCAST_BCAST_ALL");
+       if (rxfilter & ATH9K_RX_FILTER_CONTROL_WRAPPER)
+               seq_puts(file, " CONTROL_WRAPPER");
+
+       seq_puts(file, "\n");
+
+       reg = sc->sc_ah->imask;
+
+       seq_printf(file, "INTERRUPT-MASK: 0x%x", reg);
+
+       if (reg & ATH9K_INT_SWBA)
+               seq_puts(file, " SWBA");
+       if (reg & ATH9K_INT_BMISS)
+               seq_puts(file, " BMISS");
+       if (reg & ATH9K_INT_CST)
+               seq_puts(file, " CST");
+       if (reg & ATH9K_INT_RX)
+               seq_puts(file, " RX");
+       if (reg & ATH9K_INT_RXHP)
+               seq_puts(file, " RXHP");
+       if (reg & ATH9K_INT_RXLP)
+               seq_puts(file, " RXLP");
+       if (reg & ATH9K_INT_BB_WATCHDOG)
+               seq_puts(file, " BB_WATCHDOG");
+
+       seq_puts(file, "\n");
+
+       i = 0;
+       ath_for_each_chanctx(sc, ctx) {
+               if (list_empty(&ctx->vifs))
+                       continue;
+               ath9k_calculate_iter_data(sc, ctx, &iter_data);
+
+               seq_printf(file,
+                          "VIFS: CTX %i(%i) AP: %i STA: %i MESH: %i WDS: %i",
+                          i++, (int)(ctx->assigned), iter_data.naps,
+                          iter_data.nstations,
+                          iter_data.nmeshes, iter_data.nwds);
+               seq_printf(file, " ADHOC: %i TOTAL: %hi BEACON-VIF: %hi\n",
+                          iter_data.nadhocs, sc->cur_chan->nvifs,
+                          sc->nbcnvifs);
+       }
+
+       return 0;
+}
+
+static int read_file_reset(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+       static const char * const reset_cause[__RESET_TYPE_MAX] = {
+               [RESET_TYPE_BB_HANG] = "Baseband Hang",
+               [RESET_TYPE_BB_WATCHDOG] = "Baseband Watchdog",
+               [RESET_TYPE_FATAL_INT] = "Fatal HW Error",
+               [RESET_TYPE_TX_ERROR] = "TX HW error",
+               [RESET_TYPE_TX_GTT] = "Transmit timeout",
+               [RESET_TYPE_TX_HANG] = "TX Path Hang",
+               [RESET_TYPE_PLL_HANG] = "PLL RX Hang",
+               [RESET_TYPE_MAC_HANG] = "MAC Hang",
+               [RESET_TYPE_BEACON_STUCK] = "Stuck Beacon",
+               [RESET_TYPE_MCI] = "MCI Reset",
+               [RESET_TYPE_CALIBRATION] = "Calibration error",
+       };
+       int i;
+
+       for (i = 0; i < ARRAY_SIZE(reset_cause); i++) {
+               if (!reset_cause[i])
+                   continue;
+
+               seq_printf(file, "%17s: %2d\n", reset_cause[i],
+                          sc->debug.stats.reset[i]);
+       }
+
+       return 0;
+}
+
+void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
+                      struct ath_tx_status *ts, struct ath_txq *txq,
+                      unsigned int flags)
+{
+       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 (flags & ATH_TX_ERROR)
+                       TX_STAT_INC(qnum, a_xretries);
+               else
+                       TX_STAT_INC(qnum, a_completed);
+       } else {
+               if (ts->ts_status & ATH9K_TXERR_XRETRY)
+                       TX_STAT_INC(qnum, xretries);
+               else
+                       TX_STAT_INC(qnum, completed);
+       }
+
+       if (ts->ts_status & ATH9K_TXERR_FILT)
+               TX_STAT_INC(qnum, txerr_filtered);
+       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);
+}
+
+void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs)
+{
+       ath9k_cmn_debug_stat_rx(&sc->debug.stats.rxstats, rs);
+}
+
+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 (kstrtoul(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 = simple_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 (kstrtoul(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 = simple_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 */
+};
+
+static int read_file_dump_nfcal(struct seq_file *file, void *data)
+{
+       struct ieee80211_hw *hw = dev_get_drvdata(file->private);
+       struct ath_softc *sc = hw->priv;
+       struct ath_hw *ah = sc->sc_ah;
+       struct ath9k_nfcal_hist *h = sc->cur_chan->caldata.nfCalHist;
+       struct ath_common *common = ath9k_hw_common(ah);
+       struct ieee80211_conf *conf = &common->hw->conf;
+       u32 i, j;
+       u8 chainmask = (ah->rxchainmask << 3) | ah->rxchainmask;
+       u8 nread;
+
+       seq_printf(file, "Channel Noise Floor : %d\n", ah->noise);
+       seq_puts(file, "Chain | privNF | # Readings | NF Readings\n");
+       for (i = 0; i < NUM_NF_READINGS; i++) {
+               if (!(chainmask & (1 << i)) ||
+                   ((i >= AR5416_MAX_CHAINS) && !conf_is_ht40(conf)))
+                       continue;
+
+               nread = AR_PHY_CCA_FILTERWINDOW_LENGTH - h[i].invalidNFcount;
+               seq_printf(file, " %d\t %d\t %d\t\t", i, h[i].privNF, nread);
+               for (j = 0; j < nread; j++)
+                       seq_printf(file, " %d", h[i].nfCalBuffer[j]);
+               seq_puts(file, "\n");
+       }
+
+       return 0;
+}
+
+static int open_file_dump_nfcal(struct inode *inode, struct file *f)
+{
+       return single_open(f, read_file_dump_nfcal, inode->i_private);
+}
+
+static const struct file_operations fops_dump_nfcal = {
+       .read = seq_read,
+       .open = open_file_dump_nfcal,
+       .owner = THIS_MODULE,
+       .llseek = seq_lseek,
+       .release = single_release,
+};
+
+#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+static ssize_t read_file_btcoex(struct file *file, char __user *user_buf,
+                               size_t count, loff_t *ppos)
+{
+       struct ath_softc *sc = file->private_data;
+       u32 len = 0, size = 1500;
+       char *buf;
+       size_t retval;
+
+       buf = kzalloc(size, GFP_KERNEL);
+       if (buf == NULL)
+               return -ENOMEM;
+
+       if (!sc->sc_ah->common.btcoex_enabled) {
+               len = scnprintf(buf, size, "%s\n",
+                               "BTCOEX is disabled");
+               goto exit;
+       }
+
+       len = ath9k_dump_btcoex(sc, buf, size);
+exit:
+       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+
+       return retval;
+}
+
+static const struct file_operations fops_btcoex = {
+       .read = read_file_btcoex,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+#endif
+
+#ifdef CONFIG_ATH9K_DYNACK
+static ssize_t read_file_ackto(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;
+
+       len = sprintf(buf, "%u %c\n", ah->dynack.ackto,
+                     (ah->dynack.enabled) ? 'A' : 'S');
+
+       return simple_read_from_buffer(user_buf, count, ppos, buf, len);
+}
+
+static const struct file_operations fops_ackto = {
+       .read = read_file_ackto,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+#endif
+
+#ifdef CONFIG_ATH9K_WOW
+
+static ssize_t read_file_wow(struct file *file, char __user *user_buf,
+                            size_t count, loff_t *ppos)
+{
+       struct ath_softc *sc = file->private_data;
+       unsigned int len = 0, size = 32;
+       ssize_t retval;
+       char *buf;
+
+       buf = kzalloc(size, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       len += scnprintf(buf + len, size - len, "WOW: %s\n",
+                        sc->force_wow ? "ENABLED" : "DISABLED");
+
+       if (len > size)
+               len = size;
+
+       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+
+       return retval;
+}
+
+static ssize_t write_file_wow(struct file *file, const char __user *user_buf,
+                             size_t count, loff_t *ppos)
+{
+       struct ath_softc *sc = file->private_data;
+       unsigned long val;
+       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 (kstrtoul(buf, 0, &val))
+               return -EINVAL;
+
+       if (val != 1)
+               return -EINVAL;
+
+       if (!sc->force_wow) {
+               sc->force_wow = true;
+               ath9k_init_wow(sc->hw);
+       }
+
+       return count;
+}
+
+static const struct file_operations fops_wow = {
+       .read = read_file_wow,
+       .write = write_file_wow,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+#endif
+
+static ssize_t read_file_tpc(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;
+       unsigned int len = 0, size = 32;
+       ssize_t retval;
+       char *buf;
+
+       buf = kzalloc(size, GFP_KERNEL);
+       if (!buf)
+               return -ENOMEM;
+
+       len += scnprintf(buf + len, size - len, "%s\n",
+                        ah->tpc_enabled ? "ENABLED" : "DISABLED");
+
+       if (len > size)
+               len = size;
+
+       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+       kfree(buf);
+
+       return retval;
+}
+
+static ssize_t write_file_tpc(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 val;
+       char buf[32];
+       ssize_t len;
+       bool tpc_enabled;
+
+       len = min(count, sizeof(buf) - 1);
+       if (copy_from_user(buf, user_buf, len))
+               return -EFAULT;
+
+       buf[len] = '\0';
+       if (kstrtoul(buf, 0, &val))
+               return -EINVAL;
+
+       if (val < 0 || val > 1)
+               return -EINVAL;
+
+       tpc_enabled = !!val;
+
+       if (tpc_enabled != ah->tpc_enabled) {
+               ah->tpc_enabled = tpc_enabled;
+
+               mutex_lock(&sc->mutex);
+               ath9k_set_txpower(sc, NULL);
+               mutex_unlock(&sc->mutex);
+       }
+
+       return count;
+}
+
+static const struct file_operations fops_tpc = {
+       .read = read_file_tpc,
+       .write = write_file_tpc,
+       .open = simple_open,
+       .owner = THIS_MODULE,
+       .llseek = default_llseek,
+};
+
+/* Ethtool support for get-stats */
+
+#define AMKSTR(nm) #nm "_BE", #nm "_BK", #nm "_VI", #nm "_VO"
+static const char ath9k_gstrings_stats[][ETH_GSTRING_LEN] = {
+       "tx_pkts_nic",
+       "tx_bytes_nic",
+       "rx_pkts_nic",
+       "rx_bytes_nic",
+       AMKSTR(d_tx_pkts),
+       AMKSTR(d_tx_bytes),
+       AMKSTR(d_tx_mpdus_queued),
+       AMKSTR(d_tx_mpdus_completed),
+       AMKSTR(d_tx_mpdu_xretries),
+       AMKSTR(d_tx_aggregates),
+       AMKSTR(d_tx_ampdus_queued_hw),
+       AMKSTR(d_tx_ampdus_queued_sw),
+       AMKSTR(d_tx_ampdus_completed),
+       AMKSTR(d_tx_ampdu_retries),
+       AMKSTR(d_tx_ampdu_xretries),
+       AMKSTR(d_tx_fifo_underrun),
+       AMKSTR(d_tx_op_exceeded),
+       AMKSTR(d_tx_timer_expiry),
+       AMKSTR(d_tx_desc_cfg_err),
+       AMKSTR(d_tx_data_underrun),
+       AMKSTR(d_tx_delim_underrun),
+       "d_rx_crc_err",
+       "d_rx_decrypt_crc_err",
+       "d_rx_phy_err",
+       "d_rx_mic_err",
+       "d_rx_pre_delim_crc_err",
+       "d_rx_post_delim_crc_err",
+       "d_rx_decrypt_busy_err",
+
+       "d_rx_phyerr_radar",
+       "d_rx_phyerr_ofdm_timing",
+       "d_rx_phyerr_cck_timing",
+
+};
+#define ATH9K_SSTATS_LEN ARRAY_SIZE(ath9k_gstrings_stats)
+
+void ath9k_get_et_strings(struct ieee80211_hw *hw,
+                         struct ieee80211_vif *vif,
+                         u32 sset, u8 *data)
+{
+       if (sset == ETH_SS_STATS)
+               memcpy(data, *ath9k_gstrings_stats,
+                      sizeof(ath9k_gstrings_stats));
+}
+
+int ath9k_get_et_sset_count(struct ieee80211_hw *hw,
+                           struct ieee80211_vif *vif, int sset)
+{
+       if (sset == ETH_SS_STATS)
+               return ATH9K_SSTATS_LEN;
+       return 0;
+}
+
+#define AWDATA(elem)                                                   \
+       do {                                                            \
+               data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].elem; \
+               data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].elem; \
+               data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].elem; \
+               data[i++] = sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].elem; \
+       } while (0)
+
+#define AWDATA_RX(elem)                                                \
+       do {                                                    \
+               data[i++] = sc->debug.stats.rxstats.elem;       \
+       } while (0)
+
+void ath9k_get_et_stats(struct ieee80211_hw *hw,
+                       struct ieee80211_vif *vif,
+                       struct ethtool_stats *stats, u64 *data)
+{
+       struct ath_softc *sc = hw->priv;
+       int i = 0;
+
+       data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_pkts_all +
+                    sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_pkts_all +
+                    sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_pkts_all +
+                    sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_pkts_all);
+       data[i++] = (sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BE)].tx_bytes_all +
+                    sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_BK)].tx_bytes_all +
+                    sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VI)].tx_bytes_all +
+                    sc->debug.stats.txstats[PR_QNUM(IEEE80211_AC_VO)].tx_bytes_all);
+       AWDATA_RX(rx_pkts_all);
+       AWDATA_RX(rx_bytes_all);
+
+       AWDATA(tx_pkts_all);
+       AWDATA(tx_bytes_all);
+       AWDATA(queued);
+       AWDATA(completed);
+       AWDATA(xretries);
+       AWDATA(a_aggr);
+       AWDATA(a_queued_hw);
+       AWDATA(a_queued_sw);
+       AWDATA(a_completed);
+       AWDATA(a_retries);
+       AWDATA(a_xretries);
+       AWDATA(fifo_underrun);
+       AWDATA(xtxop);
+       AWDATA(timer_exp);
+       AWDATA(desc_cfg_err);
+       AWDATA(data_underrun);
+       AWDATA(delim_underrun);
+
+       AWDATA_RX(crc_err);
+       AWDATA_RX(decrypt_crc_err);
+       AWDATA_RX(phy_err);
+       AWDATA_RX(mic_err);
+       AWDATA_RX(pre_delim_crc_err);
+       AWDATA_RX(post_delim_crc_err);
+       AWDATA_RX(decrypt_busy_err);
+
+       AWDATA_RX(phy_err_stats[ATH9K_PHYERR_RADAR]);
+       AWDATA_RX(phy_err_stats[ATH9K_PHYERR_OFDM_TIMING]);
+       AWDATA_RX(phy_err_stats[ATH9K_PHYERR_CCK_TIMING]);
+
+       WARN_ON(i != ATH9K_SSTATS_LEN);
+}
+
+void ath9k_deinit_debug(struct ath_softc *sc)
+{
+       ath9k_cmn_spectral_deinit_debug(&sc->spec_priv);
+}
+
+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
+
+       ath9k_dfs_init_debug(sc);
+       ath9k_tx99_init_debug(sc);
+       ath9k_cmn_spectral_init_debug(&sc->spec_priv, sc->debug.debugfs_phy);
+
+       debugfs_create_devm_seqfile(sc->dev, "dma", sc->debug.debugfs_phy,
+                                   read_file_dma);
+       debugfs_create_devm_seqfile(sc->dev, "interrupt", sc->debug.debugfs_phy,
+                                   read_file_interrupt);
+       debugfs_create_devm_seqfile(sc->dev, "xmit", sc->debug.debugfs_phy,
+                                   read_file_xmit);
+       debugfs_create_devm_seqfile(sc->dev, "queues", sc->debug.debugfs_phy,
+                                   read_file_queues);
+       debugfs_create_u32("qlen_bk", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+                          &sc->tx.txq_max_pending[IEEE80211_AC_BK]);
+       debugfs_create_u32("qlen_be", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+                          &sc->tx.txq_max_pending[IEEE80211_AC_BE]);
+       debugfs_create_u32("qlen_vi", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+                          &sc->tx.txq_max_pending[IEEE80211_AC_VI]);
+       debugfs_create_u32("qlen_vo", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+                          &sc->tx.txq_max_pending[IEEE80211_AC_VO]);
+       debugfs_create_devm_seqfile(sc->dev, "misc", sc->debug.debugfs_phy,
+                                   read_file_misc);
+       debugfs_create_devm_seqfile(sc->dev, "reset", sc->debug.debugfs_phy,
+                                   read_file_reset);
+
+       ath9k_cmn_debug_recv(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
+       ath9k_cmn_debug_phy_err(sc->debug.debugfs_phy, &sc->debug.stats.rxstats);
+
+       debugfs_create_u8("rx_chainmask", S_IRUSR, sc->debug.debugfs_phy,
+                         &ah->rxchainmask);
+       debugfs_create_u8("tx_chainmask", S_IRUSR, sc->debug.debugfs_phy,
+                         &ah->txchainmask);
+       debugfs_create_file("ani", S_IRUSR | S_IWUSR,
+                           sc->debug.debugfs_phy, sc, &fops_ani);
+       debugfs_create_bool("paprd", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+                           &sc->sc_ah->config.enable_paprd);
+       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_devm_seqfile(sc->dev, "dump_nfcal",
+                                   sc->debug.debugfs_phy,
+                                   read_file_dump_nfcal);
+
+       ath9k_cmn_debug_base_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
+       ath9k_cmn_debug_modal_eeprom(sc->debug.debugfs_phy, sc->sc_ah);
+
+       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);
+       debugfs_create_file("antenna_diversity", S_IRUSR,
+                           sc->debug.debugfs_phy, sc, &fops_antenna_diversity);
+#ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
+       debugfs_create_file("bt_ant_diversity", S_IRUSR | S_IWUSR,
+                           sc->debug.debugfs_phy, sc, &fops_bt_ant_diversity);
+       debugfs_create_file("btcoex", S_IRUSR, sc->debug.debugfs_phy, sc,
+                           &fops_btcoex);
+#endif
+
+#ifdef CONFIG_ATH9K_WOW
+       debugfs_create_file("wow", S_IRUSR | S_IWUSR,
+                           sc->debug.debugfs_phy, sc, &fops_wow);
+#endif
+
+#ifdef CONFIG_ATH9K_DYNACK
+       debugfs_create_file("ack_to", S_IRUSR | S_IWUSR, sc->debug.debugfs_phy,
+                           sc, &fops_ackto);
+#endif
+       debugfs_create_file("tpc", S_IRUSR | S_IWUSR,
+                           sc->debug.debugfs_phy, sc, &fops_tpc);
+
+       return 0;
+}