/****************************************************************************** * * GPL LICENSE SUMMARY * * Copyright(c) 2008 - 2009 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, * USA * * The full GNU General Public License is included in this distribution * in the file called LICENSE.GPL. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 *****************************************************************************/ #include #include #include #include #include #include "iwl-dev.h" #include "iwl-debug.h" #include "iwl-core.h" #include "iwl-io.h" #include "iwl-calib.h" /* create and remove of files */ #define DEBUGFS_ADD_DIR(name, parent) do { \ dbgfs->dir_##name = debugfs_create_dir(#name, parent); \ if (!(dbgfs->dir_##name)) \ goto err; \ } while (0) #define DEBUGFS_ADD_FILE(name, parent) do { \ dbgfs->dbgfs_##parent##_files.file_##name = \ debugfs_create_file(#name, S_IWUSR | S_IRUSR, \ dbgfs->dir_##parent, priv, \ &iwl_dbgfs_##name##_ops); \ if (!(dbgfs->dbgfs_##parent##_files.file_##name)) \ goto err; \ } while (0) #define DEBUGFS_ADD_BOOL(name, parent, ptr) do { \ dbgfs->dbgfs_##parent##_files.file_##name = \ debugfs_create_bool(#name, S_IWUSR | S_IRUSR, \ dbgfs->dir_##parent, ptr); \ if (IS_ERR(dbgfs->dbgfs_##parent##_files.file_##name) \ || !dbgfs->dbgfs_##parent##_files.file_##name) \ goto err; \ } while (0) #define DEBUGFS_ADD_X32(name, parent, ptr) do { \ dbgfs->dbgfs_##parent##_files.file_##name = \ debugfs_create_x32(#name, S_IRUSR, dbgfs->dir_##parent, ptr); \ if (IS_ERR(dbgfs->dbgfs_##parent##_files.file_##name) \ || !dbgfs->dbgfs_##parent##_files.file_##name) \ goto err; \ } while (0) #define DEBUGFS_REMOVE(name) do { \ debugfs_remove(name); \ name = NULL; \ } while (0); /* file operation */ #define DEBUGFS_READ_FUNC(name) \ static ssize_t iwl_dbgfs_##name##_read(struct file *file, \ char __user *user_buf, \ size_t count, loff_t *ppos); #define DEBUGFS_WRITE_FUNC(name) \ static ssize_t iwl_dbgfs_##name##_write(struct file *file, \ const char __user *user_buf, \ size_t count, loff_t *ppos); static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file) { file->private_data = inode->i_private; return 0; } #define DEBUGFS_READ_FILE_OPS(name) \ DEBUGFS_READ_FUNC(name); \ static const struct file_operations iwl_dbgfs_##name##_ops = { \ .read = iwl_dbgfs_##name##_read, \ .open = iwl_dbgfs_open_file_generic, \ }; #define DEBUGFS_WRITE_FILE_OPS(name) \ DEBUGFS_WRITE_FUNC(name); \ static const struct file_operations iwl_dbgfs_##name##_ops = { \ .write = iwl_dbgfs_##name##_write, \ .open = iwl_dbgfs_open_file_generic, \ }; #define DEBUGFS_READ_WRITE_FILE_OPS(name) \ DEBUGFS_READ_FUNC(name); \ DEBUGFS_WRITE_FUNC(name); \ static const struct file_operations iwl_dbgfs_##name##_ops = { \ .write = iwl_dbgfs_##name##_write, \ .read = iwl_dbgfs_##name##_read, \ .open = iwl_dbgfs_open_file_generic, \ }; static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char *buf; int pos = 0; int cnt; ssize_t ret; const size_t bufsz = 100 + sizeof(char) * 24 * (MANAGEMENT_MAX + CONTROL_MAX); buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; pos += scnprintf(buf + pos, bufsz - pos, "Management:\n"); for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, "\t%s\t\t: %u\n", get_mgmt_string(cnt), priv->tx_stats.mgmt[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "Control\n"); for (cnt = 0; cnt < CONTROL_MAX; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, "\t%s\t\t: %u\n", get_ctrl_string(cnt), priv->tx_stats.ctrl[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "Data:\n"); pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n", priv->tx_stats.data_cnt); pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n", priv->tx_stats.data_bytes); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_tx_statistics_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; u32 clear_flag; char buf[8]; int buf_size; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%x", &clear_flag) != 1) return -EFAULT; if (clear_flag == 1) iwl_clear_tx_stats(priv); return count; } static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char *buf; int pos = 0; int cnt; ssize_t ret; const size_t bufsz = 100 + sizeof(char) * 24 * (MANAGEMENT_MAX + CONTROL_MAX); buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; pos += scnprintf(buf + pos, bufsz - pos, "Management:\n"); for (cnt = 0; cnt < MANAGEMENT_MAX; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, "\t%s\t\t: %u\n", get_mgmt_string(cnt), priv->rx_stats.mgmt[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "Control:\n"); for (cnt = 0; cnt < CONTROL_MAX; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, "\t%s\t\t: %u\n", get_ctrl_string(cnt), priv->rx_stats.ctrl[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "Data:\n"); pos += scnprintf(buf + pos, bufsz - pos, "\tcnt: %u\n", priv->rx_stats.data_cnt); pos += scnprintf(buf + pos, bufsz - pos, "\tbytes: %llu\n", priv->rx_stats.data_bytes); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_rx_statistics_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; u32 clear_flag; char buf[8]; int buf_size; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%x", &clear_flag) != 1) return -EFAULT; if (clear_flag == 1) iwl_clear_rx_stats(priv); return count; } #define BYTE1_MASK 0x000000ff; #define BYTE2_MASK 0x0000ffff; #define BYTE3_MASK 0x00ffffff; static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { u32 val; char buf[1024]; ssize_t ret; int i; int pos = 0; struct iwl_priv *priv = (struct iwl_priv *)file->private_data; const size_t bufsz = sizeof(buf); for (i = priv->dbgfs->sram_len; i > 0; i -= 4) { val = iwl_read_targ_mem(priv, priv->dbgfs->sram_offset + \ priv->dbgfs->sram_len - i); if (i < 4) { switch (i) { case 1: val &= BYTE1_MASK; break; case 2: val &= BYTE2_MASK; break; case 3: val &= BYTE3_MASK; break; } } pos += scnprintf(buf + pos, bufsz - pos, "0x%08x ", val); } pos += scnprintf(buf + pos, bufsz - pos, "\n"); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); return ret; } static ssize_t iwl_dbgfs_sram_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; char buf[64]; int buf_size; u32 offset, len; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%x,%x", &offset, &len) == 2) { priv->dbgfs->sram_offset = offset; priv->dbgfs->sram_len = len; } else { priv->dbgfs->sram_offset = 0; priv->dbgfs->sram_len = 0; } return count; } static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; struct iwl_station_entry *station; int max_sta = priv->hw_params.max_stations; char *buf; int i, j, pos = 0; ssize_t ret; /* Add 30 for initial string */ const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations); buf = kmalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; pos += scnprintf(buf + pos, bufsz - pos, "num of stations: %d\n\n", priv->num_stations); for (i = 0; i < max_sta; i++) { station = &priv->stations[i]; if (station->used) { pos += scnprintf(buf + pos, bufsz - pos, "station %d:\ngeneral data:\n", i+1); pos += scnprintf(buf + pos, bufsz - pos, "id: %u\n", station->sta.sta.sta_id); pos += scnprintf(buf + pos, bufsz - pos, "mode: %u\n", station->sta.mode); pos += scnprintf(buf + pos, bufsz - pos, "flags: 0x%x\n", station->sta.station_flags_msk); pos += scnprintf(buf + pos, bufsz - pos, "ps_status: %u\n", station->ps_status); pos += scnprintf(buf + pos, bufsz - pos, "tid data:\n"); pos += scnprintf(buf + pos, bufsz - pos, "seq_num\t\ttxq_id"); pos += scnprintf(buf + pos, bufsz - pos, "\tframe_count\twait_for_ba\t"); pos += scnprintf(buf + pos, bufsz - pos, "start_idx\tbitmap0\t"); pos += scnprintf(buf + pos, bufsz - pos, "bitmap1\trate_n_flags"); pos += scnprintf(buf + pos, bufsz - pos, "\n"); for (j = 0; j < MAX_TID_COUNT; j++) { pos += scnprintf(buf + pos, bufsz - pos, "[%d]:\t\t%u", j, station->tid[j].seq_number); pos += scnprintf(buf + pos, bufsz - pos, "\t%u\t\t%u\t\t%u\t\t", station->tid[j].agg.txq_id, station->tid[j].agg.frame_count, station->tid[j].agg.wait_for_ba); pos += scnprintf(buf + pos, bufsz - pos, "%u\t%llu\t%u", station->tid[j].agg.start_idx, (unsigned long long)station->tid[j].agg.bitmap, station->tid[j].agg.rate_n_flags); pos += scnprintf(buf + pos, bufsz - pos, "\n"); } pos += scnprintf(buf + pos, bufsz - pos, "\n"); } } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_nvm_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { ssize_t ret; struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0, ofs = 0, buf_size = 0; const u8 *ptr; char *buf; size_t eeprom_len = priv->cfg->eeprom_size; buf_size = 4 * eeprom_len + 256; if (eeprom_len % 16) { IWL_ERR(priv, "NVM size is not multiple of 16.\n"); return -ENODATA; } ptr = priv->eeprom; if (!ptr) { IWL_ERR(priv, "Invalid EEPROM/OTP memory\n"); return -ENOMEM; } /* 4 characters for byte 0xYY */ buf = kzalloc(buf_size, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } pos += scnprintf(buf + pos, buf_size - pos, "NVM Type: %s\n", (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) ? "OTP" : "EEPROM"); for (ofs = 0 ; ofs < eeprom_len ; ofs += 16) { pos += scnprintf(buf + pos, buf_size - pos, "0x%.4x ", ofs); hex_dump_to_buffer(ptr + ofs, 16 , 16, 2, buf + pos, buf_size - pos, 0); pos += strlen(buf + pos); if (buf_size - pos > 0) buf[pos++] = '\n'; } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_log_event_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; u32 event_log_flag; char buf[8]; int buf_size; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%d", &event_log_flag) != 1) return -EFAULT; if (event_log_flag == 1) priv->cfg->ops->lib->dump_nic_event_log(priv); return count; } static ssize_t iwl_dbgfs_channels_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; struct ieee80211_channel *channels = NULL; const struct ieee80211_supported_band *supp_band = NULL; int pos = 0, i, bufsz = PAGE_SIZE; char *buf; ssize_t ret; if (!test_bit(STATUS_GEO_CONFIGURED, &priv->status)) return -EAGAIN; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_2GHZ); if (supp_band) { channels = supp_band->channels; pos += scnprintf(buf + pos, bufsz - pos, "Displaying %d channels in 2.4GHz band 802.11bg):\n", supp_band->n_channels); for (i = 0; i < supp_band->n_channels; i++) pos += scnprintf(buf + pos, bufsz - pos, "%d: %ddBm: BSS%s%s, %s.\n", ieee80211_frequency_to_channel( channels[i].center_freq), channels[i].max_power, channels[i].flags & IEEE80211_CHAN_RADAR ? " (IEEE 802.11h required)" : "", ((channels[i].flags & IEEE80211_CHAN_NO_IBSS) || (channels[i].flags & IEEE80211_CHAN_RADAR)) ? "" : ", IBSS", channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN ? "passive only" : "active/passive"); } supp_band = iwl_get_hw_mode(priv, IEEE80211_BAND_5GHZ); if (supp_band) { channels = supp_band->channels; pos += scnprintf(buf + pos, bufsz - pos, "Displaying %d channels in 5.2GHz band (802.11a)\n", supp_band->n_channels); for (i = 0; i < supp_band->n_channels; i++) pos += scnprintf(buf + pos, bufsz - pos, "%d: %ddBm: BSS%s%s, %s.\n", ieee80211_frequency_to_channel( channels[i].center_freq), channels[i].max_power, channels[i].flags & IEEE80211_CHAN_RADAR ? " (IEEE 802.11h required)" : "", ((channels[i].flags & IEEE80211_CHAN_NO_IBSS) || (channels[i].flags & IEEE80211_CHAN_RADAR)) ? "" : ", IBSS", channels[i].flags & IEEE80211_CHAN_PASSIVE_SCAN ? "passive only" : "active/passive"); } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_status_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char buf[512]; int pos = 0; const size_t bufsz = sizeof(buf); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_ACTIVE:\t %d\n", test_bit(STATUS_HCMD_ACTIVE, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_HCMD_SYNC_ACTIVE: %d\n", test_bit(STATUS_HCMD_SYNC_ACTIVE, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INT_ENABLED:\t %d\n", test_bit(STATUS_INT_ENABLED, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_RF_KILL_HW:\t %d\n", test_bit(STATUS_RF_KILL_HW, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_INIT:\t\t %d\n", test_bit(STATUS_INIT, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_ALIVE:\t\t %d\n", test_bit(STATUS_ALIVE, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_READY:\t\t %d\n", test_bit(STATUS_READY, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_TEMPERATURE:\t %d\n", test_bit(STATUS_TEMPERATURE, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_GEO_CONFIGURED:\t %d\n", test_bit(STATUS_GEO_CONFIGURED, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_EXIT_PENDING:\t %d\n", test_bit(STATUS_EXIT_PENDING, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_STATISTICS:\t %d\n", test_bit(STATUS_STATISTICS, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCANNING:\t %d\n", test_bit(STATUS_SCANNING, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_ABORTING:\t %d\n", test_bit(STATUS_SCAN_ABORTING, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_SCAN_HW:\t\t %d\n", test_bit(STATUS_SCAN_HW, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_POWER_PMI:\t %d\n", test_bit(STATUS_POWER_PMI, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_FW_ERROR:\t %d\n", test_bit(STATUS_FW_ERROR, &priv->status)); pos += scnprintf(buf + pos, bufsz - pos, "STATUS_MODE_PENDING:\t %d\n", test_bit(STATUS_MODE_PENDING, &priv->status)); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } static ssize_t iwl_dbgfs_interrupt_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; int cnt = 0; char *buf; int bufsz = 24 * 64; /* 24 items * 64 char per item */ ssize_t ret; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } pos += scnprintf(buf + pos, bufsz - pos, "Interrupt Statistics Report:\n"); pos += scnprintf(buf + pos, bufsz - pos, "HW Error:\t\t\t %u\n", priv->isr_stats.hw); pos += scnprintf(buf + pos, bufsz - pos, "SW Error:\t\t\t %u\n", priv->isr_stats.sw); if (priv->isr_stats.sw > 0) { pos += scnprintf(buf + pos, bufsz - pos, "\tLast Restarting Code: 0x%X\n", priv->isr_stats.sw_err); } #ifdef CONFIG_IWLWIFI_DEBUG pos += scnprintf(buf + pos, bufsz - pos, "Frame transmitted:\t\t %u\n", priv->isr_stats.sch); pos += scnprintf(buf + pos, bufsz - pos, "Alive interrupt:\t\t %u\n", priv->isr_stats.alive); #endif pos += scnprintf(buf + pos, bufsz - pos, "HW RF KILL switch toggled:\t %u\n", priv->isr_stats.rfkill); pos += scnprintf(buf + pos, bufsz - pos, "CT KILL:\t\t\t %u\n", priv->isr_stats.ctkill); pos += scnprintf(buf + pos, bufsz - pos, "Wakeup Interrupt:\t\t %u\n", priv->isr_stats.wakeup); pos += scnprintf(buf + pos, bufsz - pos, "Rx command responses:\t\t %u\n", priv->isr_stats.rx); for (cnt = 0; cnt < REPLY_MAX; cnt++) { if (priv->isr_stats.rx_handlers[cnt] > 0) pos += scnprintf(buf + pos, bufsz - pos, "\tRx handler[%36s]:\t\t %u\n", get_cmd_string(cnt), priv->isr_stats.rx_handlers[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "Tx/FH interrupt:\t\t %u\n", priv->isr_stats.tx); pos += scnprintf(buf + pos, bufsz - pos, "Unexpected INTA:\t\t %u\n", priv->isr_stats.unhandled); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_interrupt_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; char buf[8]; int buf_size; u32 reset_flag; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%x", &reset_flag) != 1) return -EFAULT; if (reset_flag == 0) iwl_clear_isr_stats(priv); return count; } static ssize_t iwl_dbgfs_qos_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0, i; char buf[256]; const size_t bufsz = sizeof(buf); ssize_t ret; for (i = 0; i < AC_NUM; i++) { pos += scnprintf(buf + pos, bufsz - pos, "\tcw_min\tcw_max\taifsn\ttxop\n"); pos += scnprintf(buf + pos, bufsz - pos, "AC[%d]\t%u\t%u\t%u\t%u\n", i, priv->qos_data.def_qos_parm.ac[i].cw_min, priv->qos_data.def_qos_parm.ac[i].cw_max, priv->qos_data.def_qos_parm.ac[i].aifsn, priv->qos_data.def_qos_parm.ac[i].edca_txop); } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); return ret; } #ifdef CONFIG_IWLWIFI_LEDS static ssize_t iwl_dbgfs_led_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; char buf[256]; const size_t bufsz = sizeof(buf); ssize_t ret; pos += scnprintf(buf + pos, bufsz - pos, "allow blinking: %s\n", (priv->allow_blinking) ? "True" : "False"); if (priv->allow_blinking) { pos += scnprintf(buf + pos, bufsz - pos, "Led blinking rate: %u\n", priv->last_blink_rate); pos += scnprintf(buf + pos, bufsz - pos, "Last blink time: %lu\n", priv->last_blink_time); } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); return ret; } #endif static ssize_t iwl_dbgfs_thermal_throttling_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; struct iwl_tt_mgmt *tt = &priv->thermal_throttle; struct iwl_tt_restriction *restriction; char buf[100]; int pos = 0; const size_t bufsz = sizeof(buf); ssize_t ret; pos += scnprintf(buf + pos, bufsz - pos, "Thermal Throttling Mode: %s\n", tt->advanced_tt ? "Advance" : "Legacy"); pos += scnprintf(buf + pos, bufsz - pos, "Thermal Throttling State: %d\n", tt->state); if (tt->advanced_tt) { restriction = tt->restriction + tt->state; pos += scnprintf(buf + pos, bufsz - pos, "Tx mode: %d\n", restriction->tx_stream); pos += scnprintf(buf + pos, bufsz - pos, "Rx mode: %d\n", restriction->rx_stream); pos += scnprintf(buf + pos, bufsz - pos, "HT mode: %d\n", restriction->is_ht); } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); return ret; } static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; char buf[8]; int buf_size; int ht40; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%d", &ht40) != 1) return -EFAULT; if (!iwl_is_associated(priv)) priv->disable_ht40 = ht40 ? true : false; else { IWL_ERR(priv, "Sta associated with AP - " "Change to 40MHz channel support is not allowed\n"); return -EINVAL; } return count; } static ssize_t iwl_dbgfs_disable_ht40_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char buf[100]; int pos = 0; const size_t bufsz = sizeof(buf); ssize_t ret; pos += scnprintf(buf + pos, bufsz - pos, "11n 40MHz Mode: %s\n", priv->disable_ht40 ? "Disabled" : "Enabled"); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); return ret; } static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; char buf[8]; int buf_size; int value; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%d", &value) != 1) return -EINVAL; /* * Our users expect 0 to be "CAM", but 0 isn't actually * valid here. However, let's not confuse them and present * IWL_POWER_INDEX_1 as "1", not "0". */ if (value > 0) value -= 1; if (value != -1 && (value < 0 || value >= IWL_POWER_NUM)) return -EINVAL; priv->power_data.debug_sleep_level_override = value; iwl_power_update_mode(priv, false); return count; } static ssize_t iwl_dbgfs_sleep_level_override_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char buf[10]; int pos, value; const size_t bufsz = sizeof(buf); /* see the write function */ value = priv->power_data.debug_sleep_level_override; if (value >= 0) value += 1; pos = scnprintf(buf, bufsz, "%d\n", value); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } static ssize_t iwl_dbgfs_current_sleep_command_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char buf[200]; int pos = 0, i; const size_t bufsz = sizeof(buf); struct iwl_powertable_cmd *cmd = &priv->power_data.sleep_cmd; pos += scnprintf(buf + pos, bufsz - pos, "flags: %#.2x\n", le16_to_cpu(cmd->flags)); pos += scnprintf(buf + pos, bufsz - pos, "RX/TX timeout: %d/%d usec\n", le32_to_cpu(cmd->rx_data_timeout), le32_to_cpu(cmd->tx_data_timeout)); for (i = 0; i < IWL_POWER_VEC_SIZE; i++) pos += scnprintf(buf + pos, bufsz - pos, "sleep_interval[%d]: %d\n", i, le32_to_cpu(cmd->sleep_interval[i])); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } DEBUGFS_READ_WRITE_FILE_OPS(sram); DEBUGFS_WRITE_FILE_OPS(log_event); DEBUGFS_READ_FILE_OPS(nvm); DEBUGFS_READ_FILE_OPS(stations); DEBUGFS_READ_FILE_OPS(channels); DEBUGFS_READ_FILE_OPS(status); DEBUGFS_READ_WRITE_FILE_OPS(interrupt); DEBUGFS_READ_FILE_OPS(qos); #ifdef CONFIG_IWLWIFI_LEDS DEBUGFS_READ_FILE_OPS(led); #endif DEBUGFS_READ_FILE_OPS(thermal_throttling); DEBUGFS_READ_WRITE_FILE_OPS(disable_ht40); DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override); DEBUGFS_READ_FILE_OPS(current_sleep_command); static ssize_t iwl_dbgfs_traffic_log_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; int pos = 0, ofs = 0; int cnt = 0, entry; struct iwl_tx_queue *txq; struct iwl_queue *q; struct iwl_rx_queue *rxq = &priv->rxq; char *buf; int bufsz = ((IWL_TRAFFIC_ENTRIES * IWL_TRAFFIC_ENTRY_SIZE * 64) * 2) + (IWL_MAX_NUM_QUEUES * 32 * 8) + 400; const u8 *ptr; ssize_t ret; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate buffer\n"); return -ENOMEM; } pos += scnprintf(buf + pos, bufsz - pos, "Tx Queue\n"); for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { txq = &priv->txq[cnt]; q = &txq->q; pos += scnprintf(buf + pos, bufsz - pos, "q[%d]: read_ptr: %u, write_ptr: %u\n", cnt, q->read_ptr, q->write_ptr); } if (priv->tx_traffic && (iwl_debug_level & IWL_DL_TX)) { ptr = priv->tx_traffic; pos += scnprintf(buf + pos, bufsz - pos, "Tx Traffic idx: %u\n", priv->tx_traffic_idx); for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) { for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16; entry++, ofs += 16) { pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs); hex_dump_to_buffer(ptr + ofs, 16, 16, 2, buf + pos, bufsz - pos, 0); pos += strlen(buf + pos); if (bufsz - pos > 0) buf[pos++] = '\n'; } } } pos += scnprintf(buf + pos, bufsz - pos, "Rx Queue\n"); pos += scnprintf(buf + pos, bufsz - pos, "read: %u, write: %u\n", rxq->read, rxq->write); if (priv->rx_traffic && (iwl_debug_level & IWL_DL_RX)) { ptr = priv->rx_traffic; pos += scnprintf(buf + pos, bufsz - pos, "Rx Traffic idx: %u\n", priv->rx_traffic_idx); for (cnt = 0, ofs = 0; cnt < IWL_TRAFFIC_ENTRIES; cnt++) { for (entry = 0; entry < IWL_TRAFFIC_ENTRY_SIZE / 16; entry++, ofs += 16) { pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs); hex_dump_to_buffer(ptr + ofs, 16, 16, 2, buf + pos, bufsz - pos, 0); pos += strlen(buf + pos); if (bufsz - pos > 0) buf[pos++] = '\n'; } } } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_traffic_log_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = file->private_data; char buf[8]; int buf_size; int traffic_log; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (sscanf(buf, "%d", &traffic_log) != 1) return -EFAULT; if (traffic_log == 0) iwl_reset_traffic_log(priv); return count; } static ssize_t iwl_dbgfs_tx_queue_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; struct iwl_tx_queue *txq; struct iwl_queue *q; char *buf; int pos = 0; int cnt; int ret; const size_t bufsz = sizeof(char) * 60 * IWL_MAX_NUM_QUEUES; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; for (cnt = 0; cnt < priv->hw_params.max_txq_num; cnt++) { txq = &priv->txq[cnt]; q = &txq->q; pos += scnprintf(buf + pos, bufsz - pos, "hwq %.2d: read=%u write=%u stop=%d" " swq_id=%#.2x (ac %d/hwq %d)\n", cnt, q->read_ptr, q->write_ptr, !!test_bit(cnt, priv->queue_stopped), txq->swq_id, txq->swq_id & 0x80 ? txq->swq_id & 3 : txq->swq_id, txq->swq_id & 0x80 ? (txq->swq_id >> 2) & 0x1f : txq->swq_id); if (cnt >= 4) continue; /* for the ACs, display the stop count too */ pos += scnprintf(buf + pos, bufsz - pos, " stop-count: %d\n", atomic_read(&priv->queue_stop_count[cnt])); } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_rx_queue_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; struct iwl_rx_queue *rxq = &priv->rxq; char buf[256]; int pos = 0; const size_t bufsz = sizeof(buf); pos += scnprintf(buf + pos, bufsz - pos, "read: %u\n", rxq->read); pos += scnprintf(buf + pos, bufsz - pos, "write: %u\n", rxq->write); pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n", rxq->free_count); pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n", le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } #define UCODE_STATISTICS_CLEAR_MSK (0x1 << 0) #define UCODE_STATISTICS_FREQUENCY_MSK (0x1 << 1) #define UCODE_STATISTICS_NARROW_BAND_MSK (0x1 << 2) static int iwl_dbgfs_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz) { int p = 0; p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n", le32_to_cpu(priv->statistics.flag)); if (le32_to_cpu(priv->statistics.flag) & UCODE_STATISTICS_CLEAR_MSK) p += scnprintf(buf + p, bufsz - p, "\tStatistics have been cleared\n"); p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n", (le32_to_cpu(priv->statistics.flag) & UCODE_STATISTICS_FREQUENCY_MSK) ? "2.4 GHz" : "5.2 GHz"); p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n", (le32_to_cpu(priv->statistics.flag) & UCODE_STATISTICS_NARROW_BAND_MSK) ? "enabled" : "disabled"); return p; } static ssize_t iwl_dbgfs_ucode_rx_stats_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; char *buf; int bufsz = sizeof(struct statistics_rx_phy) * 20 + sizeof(struct statistics_rx_non_phy) * 20 + sizeof(struct statistics_rx_ht_phy) * 20 + 400; ssize_t ret; struct statistics_rx_phy *ofdm; struct statistics_rx_phy *cck; struct statistics_rx_non_phy *general; struct statistics_rx_ht_phy *ht; if (!iwl_is_alive(priv)) return -EAGAIN; /* make request to uCode to retrieve statistics information */ mutex_lock(&priv->mutex); ret = iwl_send_statistics_request(priv, 0); mutex_unlock(&priv->mutex); if (ret) { IWL_ERR(priv, "Error sending statistics request: %zd\n", ret); return -EAGAIN; } buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } /* the statistic information display here is based on * the last statistics notification from uCode * might not reflect the current uCode activity */ ofdm = &priv->statistics.rx.ofdm; cck = &priv->statistics.rx.cck; general = &priv->statistics.rx.general; ht = &priv->statistics.rx.ofdm_ht; pos += iwl_dbgfs_statistics_flag(priv, buf, bufsz); pos += scnprintf(buf + pos, bufsz - pos, "Statistics_Rx - OFDM:\n"); pos += scnprintf(buf + pos, bufsz - pos, "ina_cnt: %u\n", le32_to_cpu(ofdm->ina_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "fina_cnt: %u\n", le32_to_cpu(ofdm->fina_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "plcp_err: %u\n", le32_to_cpu(ofdm->plcp_err)); pos += scnprintf(buf + pos, bufsz - pos, "crc32_err: %u\n", le32_to_cpu(ofdm->crc32_err)); pos += scnprintf(buf + pos, bufsz - pos, "overrun_err: %u\n", le32_to_cpu(ofdm->overrun_err)); pos += scnprintf(buf + pos, bufsz - pos, "early_overrun_err: %u\n", le32_to_cpu(ofdm->early_overrun_err)); pos += scnprintf(buf + pos, bufsz - pos, "crc32_good: %u\n", le32_to_cpu(ofdm->crc32_good)); pos += scnprintf(buf + pos, bufsz - pos, "false_alarm_cnt: %u\n", le32_to_cpu(ofdm->false_alarm_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "fina_sync_err_cnt: %u\n", le32_to_cpu(ofdm->fina_sync_err_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "sfd_timeout: %u\n", le32_to_cpu(ofdm->sfd_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "fina_timeout: %u\n", le32_to_cpu(ofdm->fina_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "unresponded_rts: %u\n", le32_to_cpu(ofdm->unresponded_rts)); pos += scnprintf(buf + pos, bufsz - pos, "rxe_frame_limit_overrun: %u\n", le32_to_cpu(ofdm->rxe_frame_limit_overrun)); pos += scnprintf(buf + pos, bufsz - pos, "sent_ack_cnt: %u\n", le32_to_cpu(ofdm->sent_ack_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "sent_cts_cnt: %u\n", le32_to_cpu(ofdm->sent_cts_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "sent_ba_rsp_cnt: %u\n", le32_to_cpu(ofdm->sent_ba_rsp_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "dsp_self_kill: %u\n", le32_to_cpu(ofdm->dsp_self_kill)); pos += scnprintf(buf + pos, bufsz - pos, "mh_format_err: %u\n", le32_to_cpu(ofdm->mh_format_err)); pos += scnprintf(buf + pos, bufsz - pos, "re_acq_main_rssi_sum: %u\n", le32_to_cpu(ofdm->re_acq_main_rssi_sum)); pos += scnprintf(buf + pos, bufsz - pos, "Statistics_Rx - CCK:\n"); pos += scnprintf(buf + pos, bufsz - pos, "ina_cnt: %u\n", le32_to_cpu(cck->ina_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "fina_cnt: %u\n", le32_to_cpu(cck->fina_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "plcp_err: %u\n", le32_to_cpu(cck->plcp_err)); pos += scnprintf(buf + pos, bufsz - pos, "crc32_err: %u\n", le32_to_cpu(cck->crc32_err)); pos += scnprintf(buf + pos, bufsz - pos, "overrun_err: %u\n", le32_to_cpu(cck->overrun_err)); pos += scnprintf(buf + pos, bufsz - pos, "early_overrun_err: %u\n", le32_to_cpu(cck->early_overrun_err)); pos += scnprintf(buf + pos, bufsz - pos, "crc32_good: %u\n", le32_to_cpu(cck->crc32_good)); pos += scnprintf(buf + pos, bufsz - pos, "false_alarm_cnt: %u\n", le32_to_cpu(cck->false_alarm_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "fina_sync_err_cnt: %u\n", le32_to_cpu(cck->fina_sync_err_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "sfd_timeout: %u\n", le32_to_cpu(cck->sfd_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "fina_timeout: %u\n", le32_to_cpu(cck->fina_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "unresponded_rts: %u\n", le32_to_cpu(cck->unresponded_rts)); pos += scnprintf(buf + pos, bufsz - pos, "rxe_frame_limit_overrun: %u\n", le32_to_cpu(cck->rxe_frame_limit_overrun)); pos += scnprintf(buf + pos, bufsz - pos, "sent_ack_cnt: %u\n", le32_to_cpu(cck->sent_ack_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "sent_cts_cnt: %u\n", le32_to_cpu(cck->sent_cts_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "sent_ba_rsp_cnt: %u\n", le32_to_cpu(cck->sent_ba_rsp_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "dsp_self_kill: %u\n", le32_to_cpu(cck->dsp_self_kill)); pos += scnprintf(buf + pos, bufsz - pos, "mh_format_err: %u\n", le32_to_cpu(cck->mh_format_err)); pos += scnprintf(buf + pos, bufsz - pos, "re_acq_main_rssi_sum: %u\n", le32_to_cpu(cck->re_acq_main_rssi_sum)); pos += scnprintf(buf + pos, bufsz - pos, "Statistics_Rx - GENERAL:\n"); pos += scnprintf(buf + pos, bufsz - pos, "bogus_cts: %u\n", le32_to_cpu(general->bogus_cts)); pos += scnprintf(buf + pos, bufsz - pos, "bogus_ack: %u\n", le32_to_cpu(general->bogus_ack)); pos += scnprintf(buf + pos, bufsz - pos, "non_bssid_frames: %u\n", le32_to_cpu(general->non_bssid_frames)); pos += scnprintf(buf + pos, bufsz - pos, "filtered_frames: %u\n", le32_to_cpu(general->filtered_frames)); pos += scnprintf(buf + pos, bufsz - pos, "non_channel_beacons: %u\n", le32_to_cpu(general->non_channel_beacons)); pos += scnprintf(buf + pos, bufsz - pos, "channel_beacons: %u\n", le32_to_cpu(general->channel_beacons)); pos += scnprintf(buf + pos, bufsz - pos, "num_missed_bcon: %u\n", le32_to_cpu(general->num_missed_bcon)); pos += scnprintf(buf + pos, bufsz - pos, "adc_rx_saturation_time: %u\n", le32_to_cpu(general->adc_rx_saturation_time)); pos += scnprintf(buf + pos, bufsz - pos, "ina_detection_search_time: %u\n", le32_to_cpu(general->ina_detection_search_time)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_silence_rssi_a: %u\n", le32_to_cpu(general->beacon_silence_rssi_a)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_silence_rssi_b: %u\n", le32_to_cpu(general->beacon_silence_rssi_b)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_silence_rssi_c: %u\n", le32_to_cpu(general->beacon_silence_rssi_c)); pos += scnprintf(buf + pos, bufsz - pos, "interference_data_flag: %u\n", le32_to_cpu(general->interference_data_flag)); pos += scnprintf(buf + pos, bufsz - pos, "channel_load: %u\n", le32_to_cpu(general->channel_load)); pos += scnprintf(buf + pos, bufsz - pos, "dsp_false_alarms: %u\n", le32_to_cpu(general->dsp_false_alarms)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_rssi_a: %u\n", le32_to_cpu(general->beacon_rssi_a)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_rssi_b: %u\n", le32_to_cpu(general->beacon_rssi_b)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_rssi_c: %u\n", le32_to_cpu(general->beacon_rssi_c)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_energy_a: %u\n", le32_to_cpu(general->beacon_energy_a)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_energy_b: %u\n", le32_to_cpu(general->beacon_energy_b)); pos += scnprintf(buf + pos, bufsz - pos, "beacon_energy_c: %u\n", le32_to_cpu(general->beacon_energy_c)); pos += scnprintf(buf + pos, bufsz - pos, "Statistics_Rx - OFDM_HT:\n"); pos += scnprintf(buf + pos, bufsz - pos, "plcp_err: %u\n", le32_to_cpu(ht->plcp_err)); pos += scnprintf(buf + pos, bufsz - pos, "overrun_err: %u\n", le32_to_cpu(ht->overrun_err)); pos += scnprintf(buf + pos, bufsz - pos, "early_overrun_err: %u\n", le32_to_cpu(ht->early_overrun_err)); pos += scnprintf(buf + pos, bufsz - pos, "crc32_good: %u\n", le32_to_cpu(ht->crc32_good)); pos += scnprintf(buf + pos, bufsz - pos, "crc32_err: %u\n", le32_to_cpu(ht->crc32_err)); pos += scnprintf(buf + pos, bufsz - pos, "mh_format_err: %u\n", le32_to_cpu(ht->mh_format_err)); pos += scnprintf(buf + pos, bufsz - pos, "agg_crc32_good: %u\n", le32_to_cpu(ht->agg_crc32_good)); pos += scnprintf(buf + pos, bufsz - pos, "agg_mpdu_cnt: %u\n", le32_to_cpu(ht->agg_mpdu_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "agg_cnt: %u\n", le32_to_cpu(ht->agg_cnt)); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_ucode_tx_stats_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; char *buf; int bufsz = (sizeof(struct statistics_tx) * 24) + 250; ssize_t ret; struct statistics_tx *tx; if (!iwl_is_alive(priv)) return -EAGAIN; /* make request to uCode to retrieve statistics information */ mutex_lock(&priv->mutex); ret = iwl_send_statistics_request(priv, 0); mutex_unlock(&priv->mutex); if (ret) { IWL_ERR(priv, "Error sending statistics request: %zd\n", ret); return -EAGAIN; } buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } /* the statistic information display here is based on * the last statistics notification from uCode * might not reflect the current uCode activity */ tx = &priv->statistics.tx; pos += iwl_dbgfs_statistics_flag(priv, buf, bufsz); pos += scnprintf(buf + pos, bufsz - pos, "Statistics_Tx:\n"); pos += scnprintf(buf + pos, bufsz - pos, "preamble: %u\n", le32_to_cpu(tx->preamble_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "rx_detected_cnt: %u\n", le32_to_cpu(tx->rx_detected_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "bt_prio_defer_cnt: %u\n", le32_to_cpu(tx->bt_prio_defer_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "bt_prio_kill_cnt: %u\n", le32_to_cpu(tx->bt_prio_kill_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "few_bytes_cnt: %u\n", le32_to_cpu(tx->few_bytes_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "cts_timeout: %u\n", le32_to_cpu(tx->cts_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "ack_timeout: %u\n", le32_to_cpu(tx->ack_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "expected_ack_cnt: %u\n", le32_to_cpu(tx->expected_ack_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "actual_ack_cnt: %u\n", le32_to_cpu(tx->actual_ack_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "dump_msdu_cnt: %u\n", le32_to_cpu(tx->dump_msdu_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "burst_abort_next_frame_mismatch_cnt: %u\n", le32_to_cpu(tx->burst_abort_next_frame_mismatch_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "burst_abort_missing_next_frame_cnt: %u\n", le32_to_cpu(tx->burst_abort_missing_next_frame_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "cts_timeout_collision: %u\n", le32_to_cpu(tx->cts_timeout_collision)); pos += scnprintf(buf + pos, bufsz - pos, "ack_or_ba_timeout_collision: %u\n", le32_to_cpu(tx->ack_or_ba_timeout_collision)); pos += scnprintf(buf + pos, bufsz - pos, "agg ba_timeout: %u\n", le32_to_cpu(tx->agg.ba_timeout)); pos += scnprintf(buf + pos, bufsz - pos, "agg ba_reschedule_frames: %u\n", le32_to_cpu(tx->agg.ba_reschedule_frames)); pos += scnprintf(buf + pos, bufsz - pos, "agg scd_query_agg_frame_cnt: %u\n", le32_to_cpu(tx->agg.scd_query_agg_frame_cnt)); pos += scnprintf(buf + pos, bufsz - pos, "agg scd_query_no_agg: %u\n", le32_to_cpu(tx->agg.scd_query_no_agg)); pos += scnprintf(buf + pos, bufsz - pos, "agg scd_query_agg: %u\n", le32_to_cpu(tx->agg.scd_query_agg)); pos += scnprintf(buf + pos, bufsz - pos, "agg scd_query_mismatch: %u\n", le32_to_cpu(tx->agg.scd_query_mismatch)); pos += scnprintf(buf + pos, bufsz - pos, "agg frame_not_ready: %u\n", le32_to_cpu(tx->agg.frame_not_ready)); pos += scnprintf(buf + pos, bufsz - pos, "agg underrun: %u\n", le32_to_cpu(tx->agg.underrun)); pos += scnprintf(buf + pos, bufsz - pos, "agg bt_prio_kill: %u\n", le32_to_cpu(tx->agg.bt_prio_kill)); pos += scnprintf(buf + pos, bufsz - pos, "agg rx_ba_rsp_cnt: %u\n", le32_to_cpu(tx->agg.rx_ba_rsp_cnt)); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_ucode_general_stats_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; char *buf; int bufsz = sizeof(struct statistics_general) * 4 + 250; ssize_t ret; struct statistics_general *general; struct statistics_dbg *dbg; struct statistics_div *div; if (!iwl_is_alive(priv)) return -EAGAIN; /* make request to uCode to retrieve statistics information */ mutex_lock(&priv->mutex); ret = iwl_send_statistics_request(priv, 0); mutex_unlock(&priv->mutex); if (ret) { IWL_ERR(priv, "Error sending statistics request: %zd\n", ret); return -EAGAIN; } buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } /* the statistic information display here is based on * the last statistics notification from uCode * might not reflect the current uCode activity */ general = &priv->statistics.general; dbg = &priv->statistics.general.dbg; div = &priv->statistics.general.div; pos += iwl_dbgfs_statistics_flag(priv, buf, bufsz); pos += scnprintf(buf + pos, bufsz - pos, "Statistics_General:\n"); pos += scnprintf(buf + pos, bufsz - pos, "temperature: %u\n", le32_to_cpu(general->temperature)); pos += scnprintf(buf + pos, bufsz - pos, "temperature_m: %u\n", le32_to_cpu(general->temperature_m)); pos += scnprintf(buf + pos, bufsz - pos, "burst_check: %u\n", le32_to_cpu(dbg->burst_check)); pos += scnprintf(buf + pos, bufsz - pos, "burst_count: %u\n", le32_to_cpu(dbg->burst_count)); pos += scnprintf(buf + pos, bufsz - pos, "sleep_time: %u\n", le32_to_cpu(general->sleep_time)); pos += scnprintf(buf + pos, bufsz - pos, "slots_out: %u\n", le32_to_cpu(general->slots_out)); pos += scnprintf(buf + pos, bufsz - pos, "slots_idle: %u\n", le32_to_cpu(general->slots_idle)); pos += scnprintf(buf + pos, bufsz - pos, "ttl_timestamp: %u\n", le32_to_cpu(general->ttl_timestamp)); pos += scnprintf(buf + pos, bufsz - pos, "tx_on_a: %u\n", le32_to_cpu(div->tx_on_a)); pos += scnprintf(buf + pos, bufsz - pos, "tx_on_b: %u\n", le32_to_cpu(div->tx_on_b)); pos += scnprintf(buf + pos, bufsz - pos, "exec_time: %u\n", le32_to_cpu(div->exec_time)); pos += scnprintf(buf + pos, bufsz - pos, "probe_time: %u\n", le32_to_cpu(div->probe_time)); pos += scnprintf(buf + pos, bufsz - pos, "rx_enable_counter: %u\n", le32_to_cpu(general->rx_enable_counter)); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_sensitivity_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; int cnt = 0; char *buf; int bufsz = sizeof(struct iwl_sensitivity_data) * 4 + 100; ssize_t ret; struct iwl_sensitivity_data *data; data = &priv->sensitivity_data; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm:\t\t\t %u\n", data->auto_corr_ofdm); pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_mrc:\t\t %u\n", data->auto_corr_ofdm_mrc); pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_x1:\t\t %u\n", data->auto_corr_ofdm_x1); pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_ofdm_mrc_x1:\t\t %u\n", data->auto_corr_ofdm_mrc_x1); pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck:\t\t\t %u\n", data->auto_corr_cck); pos += scnprintf(buf + pos, bufsz - pos, "auto_corr_cck_mrc:\t\t %u\n", data->auto_corr_cck_mrc); pos += scnprintf(buf + pos, bufsz - pos, "last_bad_plcp_cnt_ofdm:\t\t %u\n", data->last_bad_plcp_cnt_ofdm); pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_ofdm:\t\t %u\n", data->last_fa_cnt_ofdm); pos += scnprintf(buf + pos, bufsz - pos, "last_bad_plcp_cnt_cck:\t\t %u\n", data->last_bad_plcp_cnt_cck); pos += scnprintf(buf + pos, bufsz - pos, "last_fa_cnt_cck:\t\t %u\n", data->last_fa_cnt_cck); pos += scnprintf(buf + pos, bufsz - pos, "nrg_curr_state:\t\t\t %u\n", data->nrg_curr_state); pos += scnprintf(buf + pos, bufsz - pos, "nrg_prev_state:\t\t\t %u\n", data->nrg_prev_state); pos += scnprintf(buf + pos, bufsz - pos, "nrg_value:\t\t\t"); for (cnt = 0; cnt < 10; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, " %u", data->nrg_value[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "\n"); pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_rssi:\t\t"); for (cnt = 0; cnt < NRG_NUM_PREV_STAT_L; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, " %u", data->nrg_silence_rssi[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "\n"); pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_ref:\t\t %u\n", data->nrg_silence_ref); pos += scnprintf(buf + pos, bufsz - pos, "nrg_energy_idx:\t\t\t %u\n", data->nrg_energy_idx); pos += scnprintf(buf + pos, bufsz - pos, "nrg_silence_idx:\t\t %u\n", data->nrg_silence_idx); pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_cck:\t\t\t %u\n", data->nrg_th_cck); pos += scnprintf(buf + pos, bufsz - pos, "nrg_auto_corr_silence_diff:\t %u\n", data->nrg_auto_corr_silence_diff); pos += scnprintf(buf + pos, bufsz - pos, "num_in_cck_no_fa:\t\t %u\n", data->num_in_cck_no_fa); pos += scnprintf(buf + pos, bufsz - pos, "nrg_th_ofdm:\t\t\t %u\n", data->nrg_th_ofdm); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_chain_noise_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; int pos = 0; int cnt = 0; char *buf; int bufsz = sizeof(struct iwl_chain_noise_data) * 4 + 100; ssize_t ret; struct iwl_chain_noise_data *data; data = &priv->chain_noise_data; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) { IWL_ERR(priv, "Can not allocate Buffer\n"); return -ENOMEM; } pos += scnprintf(buf + pos, bufsz - pos, "active_chains:\t\t\t %u\n", data->active_chains); pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_a:\t\t\t %u\n", data->chain_noise_a); pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_b:\t\t\t %u\n", data->chain_noise_b); pos += scnprintf(buf + pos, bufsz - pos, "chain_noise_c:\t\t\t %u\n", data->chain_noise_c); pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_a:\t\t\t %u\n", data->chain_signal_a); pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_b:\t\t\t %u\n", data->chain_signal_b); pos += scnprintf(buf + pos, bufsz - pos, "chain_signal_c:\t\t\t %u\n", data->chain_signal_c); pos += scnprintf(buf + pos, bufsz - pos, "beacon_count:\t\t\t %u\n", data->beacon_count); pos += scnprintf(buf + pos, bufsz - pos, "disconn_array:\t\t\t"); for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, " %u", data->disconn_array[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "\n"); pos += scnprintf(buf + pos, bufsz - pos, "delta_gain_code:\t\t"); for (cnt = 0; cnt < NUM_RX_CHAINS; cnt++) { pos += scnprintf(buf + pos, bufsz - pos, " %u", data->delta_gain_code[cnt]); } pos += scnprintf(buf + pos, bufsz - pos, "\n"); pos += scnprintf(buf + pos, bufsz - pos, "radio_write:\t\t\t %u\n", data->radio_write); pos += scnprintf(buf + pos, bufsz - pos, "state:\t\t\t\t %u\n", data->state); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } static ssize_t iwl_dbgfs_tx_power_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_priv *priv = (struct iwl_priv *)file->private_data; char buf[128]; int pos = 0; ssize_t ret; const size_t bufsz = sizeof(buf); struct statistics_tx *tx; if (!iwl_is_alive(priv)) pos += scnprintf(buf + pos, bufsz - pos, "N/A\n"); else { /* make request to uCode to retrieve statistics information */ mutex_lock(&priv->mutex); ret = iwl_send_statistics_request(priv, 0); mutex_unlock(&priv->mutex); if (ret) { IWL_ERR(priv, "Error sending statistics request: %zd\n", ret); return -EAGAIN; } tx = &priv->statistics.tx; if (tx->tx_power.ant_a || tx->tx_power.ant_b || tx->tx_power.ant_c) { pos += scnprintf(buf + pos, bufsz - pos, "tx power: (1/2 dB step)\n"); if ((priv->cfg->valid_tx_ant & ANT_A) && tx->tx_power.ant_a) pos += scnprintf(buf + pos, bufsz - pos, "\tantenna A: 0x%X\n", tx->tx_power.ant_a); if ((priv->cfg->valid_tx_ant & ANT_B) && tx->tx_power.ant_b) pos += scnprintf(buf + pos, bufsz - pos, "\tantenna B: 0x%X\n", tx->tx_power.ant_b); if ((priv->cfg->valid_tx_ant & ANT_C) && tx->tx_power.ant_c) pos += scnprintf(buf + pos, bufsz - pos, "\tantenna C: 0x%X\n", tx->tx_power.ant_c); } else pos += scnprintf(buf + pos, bufsz - pos, "N/A\n"); } return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } DEBUGFS_READ_WRITE_FILE_OPS(rx_statistics); DEBUGFS_READ_WRITE_FILE_OPS(tx_statistics); DEBUGFS_READ_WRITE_FILE_OPS(traffic_log); DEBUGFS_READ_FILE_OPS(rx_queue); DEBUGFS_READ_FILE_OPS(tx_queue); DEBUGFS_READ_FILE_OPS(ucode_rx_stats); DEBUGFS_READ_FILE_OPS(ucode_tx_stats); DEBUGFS_READ_FILE_OPS(ucode_general_stats); DEBUGFS_READ_FILE_OPS(sensitivity); DEBUGFS_READ_FILE_OPS(chain_noise); DEBUGFS_READ_FILE_OPS(tx_power); /* * Create the debugfs files and directories * */ int iwl_dbgfs_register(struct iwl_priv *priv, const char *name) { struct iwl_debugfs *dbgfs; struct dentry *phyd = priv->hw->wiphy->debugfsdir; int ret = 0; dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL); if (!dbgfs) { ret = -ENOMEM; goto err; } priv->dbgfs = dbgfs; dbgfs->name = name; dbgfs->dir_drv = debugfs_create_dir(name, phyd); if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)) { ret = -ENOENT; goto err; } DEBUGFS_ADD_DIR(data, dbgfs->dir_drv); DEBUGFS_ADD_DIR(rf, dbgfs->dir_drv); DEBUGFS_ADD_DIR(debug, dbgfs->dir_drv); DEBUGFS_ADD_FILE(nvm, data); DEBUGFS_ADD_FILE(sram, data); DEBUGFS_ADD_FILE(log_event, data); DEBUGFS_ADD_FILE(stations, data); DEBUGFS_ADD_FILE(channels, data); DEBUGFS_ADD_FILE(status, data); DEBUGFS_ADD_FILE(interrupt, data); DEBUGFS_ADD_FILE(qos, data); #ifdef CONFIG_IWLWIFI_LEDS DEBUGFS_ADD_FILE(led, data); #endif DEBUGFS_ADD_FILE(sleep_level_override, data); DEBUGFS_ADD_FILE(current_sleep_command, data); DEBUGFS_ADD_FILE(thermal_throttling, data); DEBUGFS_ADD_FILE(disable_ht40, data); DEBUGFS_ADD_FILE(rx_statistics, debug); DEBUGFS_ADD_FILE(tx_statistics, debug); DEBUGFS_ADD_FILE(traffic_log, debug); DEBUGFS_ADD_FILE(rx_queue, debug); DEBUGFS_ADD_FILE(tx_queue, debug); DEBUGFS_ADD_FILE(tx_power, debug); if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) != CSR_HW_REV_TYPE_3945) { DEBUGFS_ADD_FILE(ucode_rx_stats, debug); DEBUGFS_ADD_FILE(ucode_tx_stats, debug); DEBUGFS_ADD_FILE(ucode_general_stats, debug); DEBUGFS_ADD_FILE(sensitivity, debug); DEBUGFS_ADD_FILE(chain_noise, debug); } DEBUGFS_ADD_BOOL(disable_sensitivity, rf, &priv->disable_sens_cal); DEBUGFS_ADD_BOOL(disable_chain_noise, rf, &priv->disable_chain_noise_cal); if (((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965) || ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_3945)) DEBUGFS_ADD_BOOL(disable_tx_power, rf, &priv->disable_tx_power_cal); return 0; err: IWL_ERR(priv, "Can't open the debugfs directory\n"); iwl_dbgfs_unregister(priv); return ret; } EXPORT_SYMBOL(iwl_dbgfs_register); /** * Remove the debugfs files and directories * */ void iwl_dbgfs_unregister(struct iwl_priv *priv) { if (!priv->dbgfs) return; DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sleep_level_override); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_current_sleep_command); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_nvm); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_log_event); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_channels); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_status); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_interrupt); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_qos); #ifdef CONFIG_IWLWIFI_LEDS DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_led); #endif DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_thermal_throttling); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_disable_ht40); DEBUGFS_REMOVE(priv->dbgfs->dir_data); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_rx_statistics); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_tx_statistics); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_traffic_log); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_rx_queue); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_tx_queue); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files.file_tx_power); if ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) != CSR_HW_REV_TYPE_3945) { DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files. file_ucode_rx_stats); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files. file_ucode_tx_stats); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files. file_ucode_general_stats); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files. file_sensitivity); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_debug_files. file_chain_noise); } DEBUGFS_REMOVE(priv->dbgfs->dir_debug); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_sensitivity); DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_chain_noise); if (((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_4965) || ((priv->hw_rev & CSR_HW_REV_TYPE_MSK) == CSR_HW_REV_TYPE_3945)) DEBUGFS_REMOVE(priv->dbgfs->dbgfs_rf_files.file_disable_tx_power); DEBUGFS_REMOVE(priv->dbgfs->dir_rf); DEBUGFS_REMOVE(priv->dbgfs->dir_drv); kfree(priv->dbgfs); priv->dbgfs = NULL; } EXPORT_SYMBOL(iwl_dbgfs_unregister);