/******************************************************************************
*
* 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 <ilw@linux.intel.com>
* 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;
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 {
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 = %d\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));
}
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);
#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];
if (!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;
}
