/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2012 - 2013 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 COPYING. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * *****************************************************************************/ #include "mvm.h" #include "sta.h" #include "iwl-io.h" struct iwl_dbgfs_mvm_ctx { struct iwl_mvm *mvm; struct ieee80211_vif *vif; }; static ssize_t iwl_dbgfs_tx_flush_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; char buf[16]; int buf_size, ret; u32 scd_q_msk; if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR) return -EIO; 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", &scd_q_msk) != 1) return -EINVAL; IWL_ERR(mvm, "FLUSHING queues: scd_q_msk = 0x%x\n", scd_q_msk); mutex_lock(&mvm->mutex); ret = iwl_mvm_flush_tx_path(mvm, scd_q_msk, true) ? : count; mutex_unlock(&mvm->mutex); return ret; } static ssize_t iwl_dbgfs_sta_drain_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; struct ieee80211_sta *sta; char buf[8]; int buf_size, sta_id, drain, ret; if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR) return -EIO; 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 %d", &sta_id, &drain) != 2) return -EINVAL; mutex_lock(&mvm->mutex); sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id], lockdep_is_held(&mvm->mutex)); if (IS_ERR_OR_NULL(sta)) ret = -ENOENT; else ret = iwl_mvm_drain_sta(mvm, (void *)sta->drv_priv, drain) ? : count; mutex_unlock(&mvm->mutex); return ret; } static ssize_t iwl_dbgfs_sram_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; const struct fw_img *img; int ofs, len, pos = 0; size_t bufsz, ret; char *buf; u8 *ptr; if (!mvm->ucode_loaded) return -EINVAL; /* default is to dump the entire data segment */ if (!mvm->dbgfs_sram_offset && !mvm->dbgfs_sram_len) { img = &mvm->fw->img[mvm->cur_ucode]; ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; len = img->sec[IWL_UCODE_SECTION_DATA].len; } else { ofs = mvm->dbgfs_sram_offset; len = mvm->dbgfs_sram_len; } bufsz = len * 4 + 256; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; ptr = kzalloc(len, GFP_KERNEL); if (!ptr) { kfree(buf); return -ENOMEM; } pos += scnprintf(buf + pos, bufsz - pos, "sram_len: 0x%x\n", len); pos += scnprintf(buf + pos, bufsz - pos, "sram_offset: 0x%x\n", ofs); iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len); for (ofs = 0; ofs < len; ofs += 16) { pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs); hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos, bufsz - pos, false); pos += strlen(buf + pos); if (bufsz - pos > 0) buf[pos++] = '\n'; } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); kfree(ptr); 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_mvm *mvm = 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) { if ((offset & 0x3) || (len & 0x3)) return -EINVAL; mvm->dbgfs_sram_offset = offset; mvm->dbgfs_sram_len = len; } else { mvm->dbgfs_sram_offset = 0; mvm->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_mvm *mvm = file->private_data; struct ieee80211_sta *sta; char buf[400]; int i, pos = 0, bufsz = sizeof(buf); mutex_lock(&mvm->mutex); for (i = 0; i < IWL_MVM_STATION_COUNT; i++) { pos += scnprintf(buf + pos, bufsz - pos, "%.2d: ", i); sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i], lockdep_is_held(&mvm->mutex)); if (!sta) pos += scnprintf(buf + pos, bufsz - pos, "N/A\n"); else if (IS_ERR(sta)) pos += scnprintf(buf + pos, bufsz - pos, "%ld\n", PTR_ERR(sta)); else pos += scnprintf(buf + pos, bufsz - pos, "%pM\n", sta->addr); } mutex_unlock(&mvm->mutex); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } static ssize_t iwl_dbgfs_power_down_allow_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; char buf[8] = {}; int allow; if (!mvm->ucode_loaded) return -EIO; if (copy_from_user(buf, user_buf, sizeof(buf))) return -EFAULT; if (sscanf(buf, "%d", &allow) != 1) return -EINVAL; IWL_DEBUG_POWER(mvm, "%s device power down\n", allow ? "allow" : "prevent"); /* * TODO: Send REPLY_DEBUG_CMD (0xf0) when FW support it */ return count; } static ssize_t iwl_dbgfs_power_down_d3_allow_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; char buf[8] = {}; int allow; if (copy_from_user(buf, user_buf, sizeof(buf))) return -EFAULT; if (sscanf(buf, "%d", &allow) != 1) return -EINVAL; IWL_DEBUG_POWER(mvm, "%s device power down in d3\n", allow ? "allow" : "prevent"); /* * TODO: When WoWLAN FW alive notification happens, driver will send * REPLY_DEBUG_CMD setting power_down_allow flag according to * mvm->prevent_power_down_d3 */ mvm->prevent_power_down_d3 = !allow; return count; } static void iwl_dbgfs_update_pm(struct iwl_mvm *mvm, struct ieee80211_vif *vif, enum iwl_dbgfs_pm_mask param, int val) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_dbgfs_pm *dbgfs_pm = &mvmvif->dbgfs_pm; dbgfs_pm->mask |= param; switch (param) { case MVM_DEBUGFS_PM_KEEP_ALIVE: { struct ieee80211_hw *hw = mvm->hw; int dtimper = hw->conf.ps_dtim_period ?: 1; int dtimper_msec = dtimper * vif->bss_conf.beacon_int; IWL_DEBUG_POWER(mvm, "debugfs: set keep_alive= %d sec\n", val); if (val * MSEC_PER_SEC < 3 * dtimper_msec) { IWL_WARN(mvm, "debugfs: keep alive period (%ld msec) is less than minimum required (%d msec)\n", val * MSEC_PER_SEC, 3 * dtimper_msec); } dbgfs_pm->keep_alive_seconds = val; break; } case MVM_DEBUGFS_PM_SKIP_OVER_DTIM: IWL_DEBUG_POWER(mvm, "skip_over_dtim %s\n", val ? "enabled" : "disabled"); dbgfs_pm->skip_over_dtim = val; break; case MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS: IWL_DEBUG_POWER(mvm, "skip_dtim_periods=%d\n", val); dbgfs_pm->skip_dtim_periods = val; break; case MVM_DEBUGFS_PM_RX_DATA_TIMEOUT: IWL_DEBUG_POWER(mvm, "rx_data_timeout=%d\n", val); dbgfs_pm->rx_data_timeout = val; break; case MVM_DEBUGFS_PM_TX_DATA_TIMEOUT: IWL_DEBUG_POWER(mvm, "tx_data_timeout=%d\n", val); dbgfs_pm->tx_data_timeout = val; break; case MVM_DEBUGFS_PM_DISABLE_POWER_OFF: IWL_DEBUG_POWER(mvm, "disable_power_off=%d\n", val); dbgfs_pm->disable_power_off = val; case MVM_DEBUGFS_PM_LPRX_ENA: IWL_DEBUG_POWER(mvm, "lprx %s\n", val ? "enabled" : "disabled"); dbgfs_pm->lprx_ena = val; break; case MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD: IWL_DEBUG_POWER(mvm, "lprx_rssi_threshold=%d\n", val); dbgfs_pm->lprx_rssi_threshold = val; break; } } static ssize_t iwl_dbgfs_pm_params_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_vif *vif = file->private_data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm *mvm = mvmvif->dbgfs_data; enum iwl_dbgfs_pm_mask param; char buf[32] = {}; int val; int ret; if (copy_from_user(buf, user_buf, sizeof(buf))) return -EFAULT; if (!strncmp("keep_alive=", buf, 11)) { if (sscanf(buf + 11, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_KEEP_ALIVE; } else if (!strncmp("skip_over_dtim=", buf, 15)) { if (sscanf(buf + 15, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_SKIP_OVER_DTIM; } else if (!strncmp("skip_dtim_periods=", buf, 18)) { if (sscanf(buf + 18, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_SKIP_DTIM_PERIODS; } else if (!strncmp("rx_data_timeout=", buf, 16)) { if (sscanf(buf + 16, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_RX_DATA_TIMEOUT; } else if (!strncmp("tx_data_timeout=", buf, 16)) { if (sscanf(buf + 16, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_TX_DATA_TIMEOUT; } else if (!strncmp("disable_power_off=", buf, 18)) { if (sscanf(buf + 18, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_DISABLE_POWER_OFF; } else if (!strncmp("lprx=", buf, 5)) { if (sscanf(buf + 5, "%d", &val) != 1) return -EINVAL; param = MVM_DEBUGFS_PM_LPRX_ENA; } else if (!strncmp("lprx_rssi_threshold=", buf, 20)) { if (sscanf(buf + 20, "%d", &val) != 1) return -EINVAL; if (val > POWER_LPRX_RSSI_THRESHOLD_MAX || val < POWER_LPRX_RSSI_THRESHOLD_MIN) return -EINVAL; param = MVM_DEBUGFS_PM_LPRX_RSSI_THRESHOLD; } else { return -EINVAL; } mutex_lock(&mvm->mutex); iwl_dbgfs_update_pm(mvm, vif, param, val); ret = iwl_mvm_power_update_mode(mvm, vif); mutex_unlock(&mvm->mutex); return ret ?: count; } static ssize_t iwl_dbgfs_pm_params_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_vif *vif = file->private_data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm *mvm = mvmvif->dbgfs_data; struct iwl_powertable_cmd cmd = {}; char buf[256]; int bufsz = sizeof(buf); int pos = 0; iwl_mvm_power_build_cmd(mvm, vif, &cmd); pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off = %d\n", (cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_SAVE_ENA_MSK)) ? 0 : 1); pos += scnprintf(buf+pos, bufsz-pos, "skip_dtim_periods = %d\n", le32_to_cpu(cmd.skip_dtim_periods)); pos += scnprintf(buf+pos, bufsz-pos, "power_scheme = %d\n", iwlmvm_mod_params.power_scheme); pos += scnprintf(buf+pos, bufsz-pos, "flags = 0x%x\n", le16_to_cpu(cmd.flags)); pos += scnprintf(buf+pos, bufsz-pos, "keep_alive = %d\n", cmd.keep_alive_seconds); if (cmd.flags & cpu_to_le16(POWER_FLAGS_POWER_MANAGEMENT_ENA_MSK)) { pos += scnprintf(buf+pos, bufsz-pos, "skip_over_dtim = %d\n", (cmd.flags & cpu_to_le16(POWER_FLAGS_SKIP_OVER_DTIM_MSK)) ? 1 : 0); pos += scnprintf(buf+pos, bufsz-pos, "rx_data_timeout = %d\n", le32_to_cpu(cmd.rx_data_timeout)); pos += scnprintf(buf+pos, bufsz-pos, "tx_data_timeout = %d\n", le32_to_cpu(cmd.tx_data_timeout)); if (cmd.flags & cpu_to_le16(POWER_FLAGS_LPRX_ENA_MSK)) pos += scnprintf(buf+pos, bufsz-pos, "lprx_rssi_threshold = %d\n", le32_to_cpu(cmd.lprx_rssi_threshold)); } return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } static ssize_t iwl_dbgfs_mac_params_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_vif *vif = file->private_data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm *mvm = mvmvif->dbgfs_data; u8 ap_sta_id; struct ieee80211_chanctx_conf *chanctx_conf; char buf[512]; int bufsz = sizeof(buf); int pos = 0; int i; mutex_lock(&mvm->mutex); ap_sta_id = mvmvif->ap_sta_id; pos += scnprintf(buf+pos, bufsz-pos, "mac id/color: %d / %d\n", mvmvif->id, mvmvif->color); pos += scnprintf(buf+pos, bufsz-pos, "bssid: %pM\n", vif->bss_conf.bssid); pos += scnprintf(buf+pos, bufsz-pos, "QoS:\n"); for (i = 0; i < ARRAY_SIZE(mvmvif->queue_params); i++) { pos += scnprintf(buf+pos, bufsz-pos, "\t%d: txop:%d - cw_min:%d - cw_max = %d - aifs = %d upasd = %d\n", i, mvmvif->queue_params[i].txop, mvmvif->queue_params[i].cw_min, mvmvif->queue_params[i].cw_max, mvmvif->queue_params[i].aifs, mvmvif->queue_params[i].uapsd); } if (vif->type == NL80211_IFTYPE_STATION && ap_sta_id != IWL_MVM_STATION_COUNT) { struct ieee80211_sta *sta; struct iwl_mvm_sta *mvm_sta; sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[ap_sta_id], lockdep_is_held(&mvm->mutex)); mvm_sta = (void *)sta->drv_priv; pos += scnprintf(buf+pos, bufsz-pos, "ap_sta_id %d - reduced Tx power %d\n", ap_sta_id, mvm_sta->bt_reduced_txpower); } rcu_read_lock(); chanctx_conf = rcu_dereference(vif->chanctx_conf); if (chanctx_conf) { pos += scnprintf(buf+pos, bufsz-pos, "idle rx chains %d, active rx chains: %d\n", chanctx_conf->rx_chains_static, chanctx_conf->rx_chains_dynamic); } rcu_read_unlock(); mutex_unlock(&mvm->mutex); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } #define BT_MBOX_MSG(_notif, _num, _field) \ ((le32_to_cpu((_notif)->mbox_msg[(_num)]) & BT_MBOX##_num##_##_field)\ >> BT_MBOX##_num##_##_field##_POS) #define BT_MBOX_PRINT(_num, _field, _end) \ pos += scnprintf(buf + pos, bufsz - pos, \ "\t%s: %d%s", \ #_field, \ BT_MBOX_MSG(notif, _num, _field), \ true ? "\n" : ", "); static ssize_t iwl_dbgfs_bt_notif_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; struct iwl_bt_coex_profile_notif *notif = &mvm->last_bt_notif; char *buf; int ret, pos = 0, bufsz = sizeof(char) * 1024; buf = kmalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; mutex_lock(&mvm->mutex); pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw0:\n"); BT_MBOX_PRINT(0, LE_SLAVE_LAT, false); BT_MBOX_PRINT(0, LE_PROF1, false); BT_MBOX_PRINT(0, LE_PROF2, false); BT_MBOX_PRINT(0, LE_PROF_OTHER, false); BT_MBOX_PRINT(0, CHL_SEQ_N, false); BT_MBOX_PRINT(0, INBAND_S, false); BT_MBOX_PRINT(0, LE_MIN_RSSI, false); BT_MBOX_PRINT(0, LE_SCAN, false); BT_MBOX_PRINT(0, LE_ADV, false); BT_MBOX_PRINT(0, LE_MAX_TX_POWER, false); BT_MBOX_PRINT(0, OPEN_CON_1, true); pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw1:\n"); BT_MBOX_PRINT(1, BR_MAX_TX_POWER, false); BT_MBOX_PRINT(1, IP_SR, false); BT_MBOX_PRINT(1, LE_MSTR, false); BT_MBOX_PRINT(1, AGGR_TRFC_LD, false); BT_MBOX_PRINT(1, MSG_TYPE, false); BT_MBOX_PRINT(1, SSN, true); pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw2:\n"); BT_MBOX_PRINT(2, SNIFF_ACT, false); BT_MBOX_PRINT(2, PAG, false); BT_MBOX_PRINT(2, INQUIRY, false); BT_MBOX_PRINT(2, CONN, false); BT_MBOX_PRINT(2, SNIFF_INTERVAL, false); BT_MBOX_PRINT(2, DISC, false); BT_MBOX_PRINT(2, SCO_TX_ACT, false); BT_MBOX_PRINT(2, SCO_RX_ACT, false); BT_MBOX_PRINT(2, ESCO_RE_TX, false); BT_MBOX_PRINT(2, SCO_DURATION, true); pos += scnprintf(buf+pos, bufsz-pos, "MBOX dw3:\n"); BT_MBOX_PRINT(3, SCO_STATE, false); BT_MBOX_PRINT(3, SNIFF_STATE, false); BT_MBOX_PRINT(3, A2DP_STATE, false); BT_MBOX_PRINT(3, ACL_STATE, false); BT_MBOX_PRINT(3, MSTR_STATE, false); BT_MBOX_PRINT(3, OBX_STATE, false); BT_MBOX_PRINT(3, OPEN_CON_2, false); BT_MBOX_PRINT(3, TRAFFIC_LOAD, false); BT_MBOX_PRINT(3, CHL_SEQN_LSB, false); BT_MBOX_PRINT(3, INBAND_P, false); BT_MBOX_PRINT(3, MSG_TYPE_2, false); BT_MBOX_PRINT(3, SSN_2, false); BT_MBOX_PRINT(3, UPDATE_REQUEST, true); pos += scnprintf(buf+pos, bufsz-pos, "bt_status = %d\n", notif->bt_status); pos += scnprintf(buf+pos, bufsz-pos, "bt_open_conn = %d\n", notif->bt_open_conn); pos += scnprintf(buf+pos, bufsz-pos, "bt_traffic_load = %d\n", notif->bt_traffic_load); pos += scnprintf(buf+pos, bufsz-pos, "bt_agg_traffic_load = %d\n", notif->bt_agg_traffic_load); pos += scnprintf(buf+pos, bufsz-pos, "bt_ci_compliance = %d\n", notif->bt_ci_compliance); mutex_unlock(&mvm->mutex); ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } #undef BT_MBOX_PRINT static ssize_t iwl_dbgfs_fw_restart_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; bool restart_fw = iwlwifi_mod_params.restart_fw; int ret; iwlwifi_mod_params.restart_fw = true; mutex_lock(&mvm->mutex); /* take the return value to make compiler happy - it will fail anyway */ ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, CMD_SYNC, 0, NULL); mutex_unlock(&mvm->mutex); iwlwifi_mod_params.restart_fw = restart_fw; return count; } static void iwl_dbgfs_update_bf(struct ieee80211_vif *vif, enum iwl_dbgfs_bf_mask param, int value) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_dbgfs_bf *dbgfs_bf = &mvmvif->dbgfs_bf; dbgfs_bf->mask |= param; switch (param) { case MVM_DEBUGFS_BF_ENERGY_DELTA: dbgfs_bf->bf_energy_delta = value; break; case MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA: dbgfs_bf->bf_roaming_energy_delta = value; break; case MVM_DEBUGFS_BF_ROAMING_STATE: dbgfs_bf->bf_roaming_state = value; break; case MVM_DEBUGFS_BF_TEMPERATURE_DELTA: dbgfs_bf->bf_temperature_delta = value; break; case MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER: dbgfs_bf->bf_enable_beacon_filter = value; break; case MVM_DEBUGFS_BF_DEBUG_FLAG: dbgfs_bf->bf_debug_flag = value; break; case MVM_DEBUGFS_BF_ESCAPE_TIMER: dbgfs_bf->bf_escape_timer = value; break; case MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT: dbgfs_bf->ba_enable_beacon_abort = value; break; case MVM_DEBUGFS_BA_ESCAPE_TIMER: dbgfs_bf->ba_escape_timer = value; break; } } static ssize_t iwl_dbgfs_bf_params_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_vif *vif = file->private_data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); struct iwl_mvm *mvm = mvmvif->dbgfs_data; enum iwl_dbgfs_bf_mask param; char buf[256]; int buf_size; int value; int ret = 0; memset(buf, 0, sizeof(buf)); buf_size = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, buf_size)) return -EFAULT; if (!strncmp("bf_energy_delta=", buf, 16)) { if (sscanf(buf+16, "%d", &value) != 1) return -EINVAL; if (value < IWL_BF_ENERGY_DELTA_MIN || value > IWL_BF_ENERGY_DELTA_MAX) return -EINVAL; param = MVM_DEBUGFS_BF_ENERGY_DELTA; } else if (!strncmp("bf_roaming_energy_delta=", buf, 24)) { if (sscanf(buf+24, "%d", &value) != 1) return -EINVAL; if (value < IWL_BF_ROAMING_ENERGY_DELTA_MIN || value > IWL_BF_ROAMING_ENERGY_DELTA_MAX) return -EINVAL; param = MVM_DEBUGFS_BF_ROAMING_ENERGY_DELTA; } else if (!strncmp("bf_roaming_state=", buf, 17)) { if (sscanf(buf+17, "%d", &value) != 1) return -EINVAL; if (value < IWL_BF_ROAMING_STATE_MIN || value > IWL_BF_ROAMING_STATE_MAX) return -EINVAL; param = MVM_DEBUGFS_BF_ROAMING_STATE; } else if (!strncmp("bf_temperature_delta=", buf, 21)) { if (sscanf(buf+21, "%d", &value) != 1) return -EINVAL; if (value < IWL_BF_TEMPERATURE_DELTA_MIN || value > IWL_BF_TEMPERATURE_DELTA_MAX) return -EINVAL; param = MVM_DEBUGFS_BF_TEMPERATURE_DELTA; } else if (!strncmp("bf_enable_beacon_filter=", buf, 24)) { if (sscanf(buf+24, "%d", &value) != 1) return -EINVAL; if (value < 0 || value > 1) return -EINVAL; param = MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER; } else if (!strncmp("bf_debug_flag=", buf, 14)) { if (sscanf(buf+14, "%d", &value) != 1) return -EINVAL; if (value < 0 || value > 1) return -EINVAL; param = MVM_DEBUGFS_BF_DEBUG_FLAG; } else if (!strncmp("bf_escape_timer=", buf, 16)) { if (sscanf(buf+16, "%d", &value) != 1) return -EINVAL; if (value < IWL_BF_ESCAPE_TIMER_MIN || value > IWL_BF_ESCAPE_TIMER_MAX) return -EINVAL; param = MVM_DEBUGFS_BF_ESCAPE_TIMER; } else if (!strncmp("ba_escape_timer=", buf, 16)) { if (sscanf(buf+16, "%d", &value) != 1) return -EINVAL; if (value < IWL_BA_ESCAPE_TIMER_MIN || value > IWL_BA_ESCAPE_TIMER_MAX) return -EINVAL; param = MVM_DEBUGFS_BA_ESCAPE_TIMER; } else if (!strncmp("ba_enable_beacon_abort=", buf, 23)) { if (sscanf(buf+23, "%d", &value) != 1) return -EINVAL; if (value < 0 || value > 1) return -EINVAL; param = MVM_DEBUGFS_BA_ENABLE_BEACON_ABORT; } else { return -EINVAL; } mutex_lock(&mvm->mutex); iwl_dbgfs_update_bf(vif, param, value); if (param == MVM_DEBUGFS_BF_ENABLE_BEACON_FILTER && !value) { ret = iwl_mvm_disable_beacon_filter(mvm, vif); } else { if (mvmvif->bf_enabled) ret = iwl_mvm_enable_beacon_filter(mvm, vif); else ret = iwl_mvm_disable_beacon_filter(mvm, vif); } mutex_unlock(&mvm->mutex); return ret ?: count; } static ssize_t iwl_dbgfs_bf_params_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct ieee80211_vif *vif = file->private_data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); char buf[256]; int pos = 0; const size_t bufsz = sizeof(buf); struct iwl_beacon_filter_cmd cmd = { .bf_energy_delta = IWL_BF_ENERGY_DELTA_DEFAULT, .bf_roaming_energy_delta = IWL_BF_ROAMING_ENERGY_DELTA_DEFAULT, .bf_roaming_state = IWL_BF_ROAMING_STATE_DEFAULT, .bf_temperature_delta = IWL_BF_TEMPERATURE_DELTA_DEFAULT, .bf_enable_beacon_filter = IWL_BF_ENABLE_BEACON_FILTER_DEFAULT, .bf_debug_flag = IWL_BF_DEBUG_FLAG_DEFAULT, .bf_escape_timer = cpu_to_le32(IWL_BF_ESCAPE_TIMER_DEFAULT), .ba_escape_timer = cpu_to_le32(IWL_BA_ESCAPE_TIMER_DEFAULT), .ba_enable_beacon_abort = IWL_BA_ENABLE_BEACON_ABORT_DEFAULT, }; iwl_mvm_beacon_filter_debugfs_parameters(vif, &cmd); if (mvmvif->bf_enabled) cmd.bf_enable_beacon_filter = 1; else cmd.bf_enable_beacon_filter = 0; pos += scnprintf(buf+pos, bufsz-pos, "bf_energy_delta = %d\n", cmd.bf_energy_delta); pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_energy_delta = %d\n", cmd.bf_roaming_energy_delta); pos += scnprintf(buf+pos, bufsz-pos, "bf_roaming_state = %d\n", cmd.bf_roaming_state); pos += scnprintf(buf+pos, bufsz-pos, "bf_temperature_delta = %d\n", cmd.bf_temperature_delta); pos += scnprintf(buf+pos, bufsz-pos, "bf_enable_beacon_filter = %d\n", cmd.bf_enable_beacon_filter); pos += scnprintf(buf+pos, bufsz-pos, "bf_debug_flag = %d\n", cmd.bf_debug_flag); pos += scnprintf(buf+pos, bufsz-pos, "bf_escape_timer = %d\n", cmd.bf_escape_timer); pos += scnprintf(buf+pos, bufsz-pos, "ba_escape_timer = %d\n", cmd.ba_escape_timer); pos += scnprintf(buf+pos, bufsz-pos, "ba_enable_beacon_abort = %d\n", cmd.ba_enable_beacon_abort); return simple_read_from_buffer(user_buf, count, ppos, buf, pos); } #ifdef CONFIG_PM_SLEEP static ssize_t iwl_dbgfs_d3_sram_write(struct file *file, const char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; char buf[8] = {}; int store; if (copy_from_user(buf, user_buf, sizeof(buf))) return -EFAULT; if (sscanf(buf, "%d", &store) != 1) return -EINVAL; mvm->store_d3_resume_sram = store; return count; } static ssize_t iwl_dbgfs_d3_sram_read(struct file *file, char __user *user_buf, size_t count, loff_t *ppos) { struct iwl_mvm *mvm = file->private_data; const struct fw_img *img; int ofs, len, pos = 0; size_t bufsz, ret; char *buf; u8 *ptr = mvm->d3_resume_sram; img = &mvm->fw->img[IWL_UCODE_WOWLAN]; len = img->sec[IWL_UCODE_SECTION_DATA].len; bufsz = len * 4 + 256; buf = kzalloc(bufsz, GFP_KERNEL); if (!buf) return -ENOMEM; pos += scnprintf(buf, bufsz, "D3 SRAM capture: %sabled\n", mvm->store_d3_resume_sram ? "en" : "dis"); if (ptr) { for (ofs = 0; ofs < len; ofs += 16) { pos += scnprintf(buf + pos, bufsz - pos, "0x%.4x ", ofs); hex_dump_to_buffer(ptr + ofs, 16, 16, 1, buf + pos, bufsz - pos, false); pos += strlen(buf + pos); if (bufsz - pos > 0) buf[pos++] = '\n'; } } else { pos += scnprintf(buf + pos, bufsz - pos, "(no data captured)\n"); } ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); kfree(buf); return ret; } #endif #define MVM_DEBUGFS_READ_FILE_OPS(name) \ static const struct file_operations iwl_dbgfs_##name##_ops = { \ .read = iwl_dbgfs_##name##_read, \ .open = simple_open, \ .llseek = generic_file_llseek, \ } #define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name) \ static const struct file_operations iwl_dbgfs_##name##_ops = { \ .write = iwl_dbgfs_##name##_write, \ .read = iwl_dbgfs_##name##_read, \ .open = simple_open, \ .llseek = generic_file_llseek, \ }; #define MVM_DEBUGFS_WRITE_FILE_OPS(name) \ static const struct file_operations iwl_dbgfs_##name##_ops = { \ .write = iwl_dbgfs_##name##_write, \ .open = simple_open, \ .llseek = generic_file_llseek, \ }; #define MVM_DEBUGFS_ADD_FILE(name, parent, mode) do { \ if (!debugfs_create_file(#name, mode, parent, mvm, \ &iwl_dbgfs_##name##_ops)) \ goto err; \ } while (0) #define MVM_DEBUGFS_ADD_FILE_VIF(name, parent, mode) do { \ if (!debugfs_create_file(#name, mode, parent, vif, \ &iwl_dbgfs_##name##_ops)) \ goto err; \ } while (0) /* Device wide debugfs entries */ MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush); MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain); MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram); MVM_DEBUGFS_READ_FILE_OPS(stations); MVM_DEBUGFS_READ_FILE_OPS(bt_notif); MVM_DEBUGFS_WRITE_FILE_OPS(power_down_allow); MVM_DEBUGFS_WRITE_FILE_OPS(power_down_d3_allow); MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart); #ifdef CONFIG_PM_SLEEP MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram); #endif /* Interface specific debugfs entries */ MVM_DEBUGFS_READ_FILE_OPS(mac_params); MVM_DEBUGFS_READ_WRITE_FILE_OPS(pm_params); MVM_DEBUGFS_READ_WRITE_FILE_OPS(bf_params); int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) { char buf[100]; mvm->debugfs_dir = dbgfs_dir; MVM_DEBUGFS_ADD_FILE(tx_flush, mvm->debugfs_dir, S_IWUSR); MVM_DEBUGFS_ADD_FILE(sta_drain, mvm->debugfs_dir, S_IWUSR); MVM_DEBUGFS_ADD_FILE(sram, mvm->debugfs_dir, S_IWUSR | S_IRUSR); MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR); MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR); MVM_DEBUGFS_ADD_FILE(power_down_allow, mvm->debugfs_dir, S_IWUSR); MVM_DEBUGFS_ADD_FILE(power_down_d3_allow, mvm->debugfs_dir, S_IWUSR); MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR); #ifdef CONFIG_PM_SLEEP MVM_DEBUGFS_ADD_FILE(d3_sram, mvm->debugfs_dir, S_IRUSR | S_IWUSR); MVM_DEBUGFS_ADD_FILE(d3_test, mvm->debugfs_dir, S_IRUSR); if (!debugfs_create_bool("d3_wake_sysassert", S_IRUSR | S_IWUSR, mvm->debugfs_dir, &mvm->d3_wake_sysassert)) goto err; #endif /* * Create a symlink with mac80211. It will be removed when mac80211 * exists (before the opmode exists which removes the target.) */ snprintf(buf, 100, "../../%s/%s", dbgfs_dir->d_parent->d_parent->d_name.name, dbgfs_dir->d_parent->d_name.name); if (!debugfs_create_symlink("iwlwifi", mvm->hw->wiphy->debugfsdir, buf)) goto err; return 0; err: IWL_ERR(mvm, "Can't create the mvm debugfs directory\n"); return -ENOMEM; } void iwl_mvm_vif_dbgfs_register(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct dentry *dbgfs_dir = vif->debugfs_dir; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); char buf[100]; /* * Check if debugfs directory already exist before creating it. * This may happen when, for example, resetting hw or suspend-resume */ if (!dbgfs_dir || mvmvif->dbgfs_dir) return; mvmvif->dbgfs_dir = debugfs_create_dir("iwlmvm", dbgfs_dir); mvmvif->dbgfs_data = mvm; if (!mvmvif->dbgfs_dir) { IWL_ERR(mvm, "Failed to create debugfs directory under %s\n", dbgfs_dir->d_name.name); return; } if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM && vif->type == NL80211_IFTYPE_STATION && !vif->p2p) MVM_DEBUGFS_ADD_FILE_VIF(pm_params, mvmvif->dbgfs_dir, S_IWUSR | S_IRUSR); MVM_DEBUGFS_ADD_FILE_VIF(mac_params, mvmvif->dbgfs_dir, S_IRUSR); if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p && mvmvif == mvm->bf_allowed_vif) MVM_DEBUGFS_ADD_FILE_VIF(bf_params, mvmvif->dbgfs_dir, S_IRUSR | S_IWUSR); /* * Create symlink for convenience pointing to interface specific * debugfs entries for the driver. For example, under * /sys/kernel/debug/iwlwifi/0000\:02\:00.0/iwlmvm/ * find * netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/ */ snprintf(buf, 100, "../../../%s/%s/%s/%s", dbgfs_dir->d_parent->d_parent->d_name.name, dbgfs_dir->d_parent->d_name.name, dbgfs_dir->d_name.name, mvmvif->dbgfs_dir->d_name.name); mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name, mvm->debugfs_dir, buf); if (!mvmvif->dbgfs_slink) IWL_ERR(mvm, "Can't create debugfs symbolic link under %s\n", dbgfs_dir->d_name.name); return; err: IWL_ERR(mvm, "Can't create debugfs entity\n"); } void iwl_mvm_vif_dbgfs_clean(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); debugfs_remove(mvmvif->dbgfs_slink); mvmvif->dbgfs_slink = NULL; debugfs_remove_recursive(mvmvif->dbgfs_dir); mvmvif->dbgfs_dir = NULL; }