diff options
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | 1767 |
1 files changed, 1767 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c new file mode 100644 index 0000000..4c5d841 --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -0,0 +1,1767 @@ +/****************************************************************************** + * + * 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 - 2014 Intel Corporation. All rights reserved. + * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * Copyright(c) 2016 Intel Deutschland GmbH + * + * 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 <linuxwifi@intel.com> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + * BSD LICENSE + * + * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. + * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * 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 <linux/vmalloc.h> +#include <linux/ieee80211.h> +#include <linux/netdevice.h> + +#include "mvm.h" +#include "fw-dbg.h" +#include "sta.h" +#include "iwl-io.h" +#include "debugfs.h" +#include "iwl-fw-error-dump.h" + +static ssize_t iwl_dbgfs_ctdp_budget_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + char buf[16]; + int pos, budget; + + if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR) + return -EIO; + + mutex_lock(&mvm->mutex); + budget = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_REPORT, 0); + mutex_unlock(&mvm->mutex); + + if (budget < 0) + return budget; + + pos = scnprintf(buf, sizeof(buf), "%d\n", budget); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int ret; + + if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR) + return -EIO; + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_ctdp_command(mvm, CTDP_CMD_OPERATION_STOP, 0); + mutex_unlock(&mvm->mutex); + + return ret ?: count; +} + +static ssize_t iwl_dbgfs_tx_flush_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int ret; + u32 scd_q_msk; + + if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR) + return -EIO; + + 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, 0) ? : count; + mutex_unlock(&mvm->mutex); + + return ret; +} + +static ssize_t iwl_dbgfs_sta_drain_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm_sta *mvmsta; + int sta_id, drain, ret; + + if (!mvm->ucode_loaded || mvm->cur_ucode != IWL_UCODE_REGULAR) + return -EIO; + + if (sscanf(buf, "%d %d", &sta_id, &drain) != 2) + return -EINVAL; + if (sta_id < 0 || sta_id >= IWL_MVM_STATION_COUNT) + return -EINVAL; + if (drain < 0 || drain > 1) + return -EINVAL; + + mutex_lock(&mvm->mutex); + + mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id); + + if (!mvmsta) + ret = -ENOENT; + else + ret = iwl_mvm_drain_sta(mvm, mvmsta, 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; + unsigned int ofs, len; + size_t ret; + u8 *ptr; + + if (!mvm->ucode_loaded) + return -EINVAL; + + /* default is to dump the entire data segment */ + img = &mvm->fw->img[mvm->cur_ucode]; + ofs = img->sec[IWL_UCODE_SECTION_DATA].offset; + len = img->sec[IWL_UCODE_SECTION_DATA].len; + + if (mvm->dbgfs_sram_len) { + ofs = mvm->dbgfs_sram_offset; + len = mvm->dbgfs_sram_len; + } + + ptr = kzalloc(len, GFP_KERNEL); + if (!ptr) + return -ENOMEM; + + iwl_trans_read_mem_bytes(mvm->trans, ofs, ptr, len); + + ret = simple_read_from_buffer(user_buf, count, ppos, ptr, len); + + kfree(ptr); + + return ret; +} + +static ssize_t iwl_dbgfs_sram_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + const struct fw_img *img; + u32 offset, len; + u32 img_offset, img_len; + + if (!mvm->ucode_loaded) + return -EINVAL; + + img = &mvm->fw->img[mvm->cur_ucode]; + img_offset = img->sec[IWL_UCODE_SECTION_DATA].offset; + img_len = img->sec[IWL_UCODE_SECTION_DATA].len; + + if (sscanf(buf, "%x,%x", &offset, &len) == 2) { + if ((offset & 0x3) || (len & 0x3)) + return -EINVAL; + + if (offset + len > img_offset + img_len) + 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_set_nic_temperature_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + char buf[16]; + int pos; + + if (!mvm->temperature_test) + pos = scnprintf(buf , sizeof(buf), "disabled\n"); + else + pos = scnprintf(buf , sizeof(buf), "%d\n", mvm->temperature); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +/* + * Set NIC Temperature + * Cause the driver to ignore the actual NIC temperature reported by the FW + * Enable: any value between IWL_MVM_DEBUG_SET_TEMPERATURE_MIN - + * IWL_MVM_DEBUG_SET_TEMPERATURE_MAX + * Disable: IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE + */ +static ssize_t iwl_dbgfs_set_nic_temperature_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + int temperature; + + if (!mvm->ucode_loaded && !mvm->temperature_test) + return -EIO; + + if (kstrtoint(buf, 10, &temperature)) + return -EINVAL; + /* not a legal temperature */ + if ((temperature > IWL_MVM_DEBUG_SET_TEMPERATURE_MAX && + temperature != IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) || + temperature < IWL_MVM_DEBUG_SET_TEMPERATURE_MIN) + return -EINVAL; + + mutex_lock(&mvm->mutex); + if (temperature == IWL_MVM_DEBUG_SET_TEMPERATURE_DISABLE) { + if (!mvm->temperature_test) + goto out; + + mvm->temperature_test = false; + /* Since we can't read the temp while awake, just set + * it to zero until we get the next RX stats from the + * firmware. + */ + mvm->temperature = 0; + } else { + mvm->temperature_test = true; + mvm->temperature = temperature; + } + IWL_DEBUG_TEMP(mvm, "%sabling debug set temperature (temp = %d)\n", + mvm->temperature_test ? "En" : "Dis" , + mvm->temperature); + /* handle the temperature change */ + iwl_mvm_tt_handler(mvm); + +out: + mutex_unlock(&mvm->mutex); + + return count; +} + +static ssize_t iwl_dbgfs_nic_temp_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + char buf[16]; + int pos, ret; + s32 temp; + + if (!mvm->ucode_loaded) + return -EIO; + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_get_temp(mvm, &temp); + mutex_unlock(&mvm->mutex); + + if (ret) + return -EIO; + + pos = scnprintf(buf , sizeof(buf), "%d\n", temp); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +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_disable_power_off_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + char buf[64]; + int bufsz = sizeof(buf); + int pos = 0; + + pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d0=%d\n", + mvm->disable_power_off); + pos += scnprintf(buf+pos, bufsz-pos, "disable_power_off_d3=%d\n", + mvm->disable_power_off_d3); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +static ssize_t iwl_dbgfs_disable_power_off_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int ret, val; + + if (!mvm->ucode_loaded) + return -EIO; + + if (!strncmp("disable_power_off_d0=", buf, 21)) { + if (sscanf(buf + 21, "%d", &val) != 1) + return -EINVAL; + mvm->disable_power_off = val; + } else if (!strncmp("disable_power_off_d3=", buf, 21)) { + if (sscanf(buf + 21, "%d", &val) != 1) + return -EINVAL; + mvm->disable_power_off_d3 = val; + } else { + return -EINVAL; + } + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_power_update_device(mvm); + mutex_unlock(&mvm->mutex); + + return ret ?: count; +} + +#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 +int iwl_mvm_coex_dump_mbox(struct iwl_bt_coex_profile_notif *notif, char *buf, + int pos, int bufsz) +{ + 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); + + return pos; +} + +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 += iwl_mvm_coex_dump_mbox(notif, buf, pos, bufsz); + + pos += scnprintf(buf + pos, bufsz - pos, "bt_ci_compliance = %d\n", + notif->bt_ci_compliance); + pos += scnprintf(buf + pos, bufsz - pos, "primary_ch_lut = %d\n", + le32_to_cpu(notif->primary_ch_lut)); + pos += scnprintf(buf + pos, bufsz - pos, "secondary_ch_lut = %d\n", + le32_to_cpu(notif->secondary_ch_lut)); + pos += scnprintf(buf + pos, + bufsz - pos, "bt_activity_grading = %d\n", + le32_to_cpu(notif->bt_activity_grading)); + pos += scnprintf(buf + pos, bufsz - pos, + "antenna isolation = %d CORUN LUT index = %d\n", + mvm->last_ant_isol, mvm->last_corun_lut); + pos += scnprintf(buf + pos, bufsz - pos, "bt_rrc = %d\n", + (notif->ttc_rrc_status >> 4) & 0xF); + pos += scnprintf(buf + pos, bufsz - pos, "bt_ttc = %d\n", + notif->ttc_rrc_status & 0xF); + + pos += scnprintf(buf + pos, bufsz - pos, "sync_sco = %d\n", + IWL_MVM_BT_COEX_SYNC2SCO); + pos += scnprintf(buf + pos, bufsz - pos, "mplut = %d\n", + IWL_MVM_BT_COEX_MPLUT); + pos += scnprintf(buf + pos, bufsz - pos, "corunning = %d\n", + IWL_MVM_BT_COEX_CORUNNING); + + 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_bt_cmd_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_ci_cmd *cmd = &mvm->last_bt_ci_cmd; + char buf[256]; + int bufsz = sizeof(buf); + int pos = 0; + + mutex_lock(&mvm->mutex); + + pos += scnprintf(buf + pos, bufsz - pos, "Channel inhibition CMD\n"); + pos += scnprintf(buf + pos, bufsz - pos, + "\tPrimary Channel Bitmap 0x%016llx\n", + le64_to_cpu(cmd->bt_primary_ci)); + pos += scnprintf(buf + pos, bufsz - pos, + "\tSecondary Channel Bitmap 0x%016llx\n", + le64_to_cpu(cmd->bt_secondary_ci)); + + mutex_unlock(&mvm->mutex); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +static ssize_t +iwl_dbgfs_bt_tx_prio_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + u32 bt_tx_prio; + + if (sscanf(buf, "%u", &bt_tx_prio) != 1) + return -EINVAL; + if (bt_tx_prio > 4) + return -EINVAL; + + mvm->bt_tx_prio = bt_tx_prio; + + return count; +} + +static ssize_t +iwl_dbgfs_bt_force_ant_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + static const char * const modes_str[BT_FORCE_ANT_MAX] = { + [BT_FORCE_ANT_DIS] = "dis", + [BT_FORCE_ANT_AUTO] = "auto", + [BT_FORCE_ANT_BT] = "bt", + [BT_FORCE_ANT_WIFI] = "wifi", + }; + int ret, bt_force_ant_mode; + + for (bt_force_ant_mode = 0; + bt_force_ant_mode < ARRAY_SIZE(modes_str); + bt_force_ant_mode++) { + if (!strcmp(buf, modes_str[bt_force_ant_mode])) + break; + } + + if (bt_force_ant_mode >= ARRAY_SIZE(modes_str)) + return -EINVAL; + + ret = 0; + mutex_lock(&mvm->mutex); + if (mvm->bt_force_ant_mode == bt_force_ant_mode) + goto out; + + mvm->bt_force_ant_mode = bt_force_ant_mode; + IWL_DEBUG_COEX(mvm, "Force mode: %s\n", + modes_str[mvm->bt_force_ant_mode]); + ret = iwl_send_bt_init_conf(mvm); + +out: + mutex_unlock(&mvm->mutex); + return ret ?: count; +} + +#define PRINT_STATS_LE32(_struct, _memb) \ + pos += scnprintf(buf + pos, bufsz - pos, \ + fmt_table, #_memb, \ + le32_to_cpu(_struct->_memb)) + +static ssize_t iwl_dbgfs_fw_rx_stats_read(struct file *file, + char __user *user_buf, size_t count, + loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + static const char *fmt_table = "\t%-30s %10u\n"; + static const char *fmt_header = "%-32s\n"; + int pos = 0; + char *buf; + int ret; + /* 43 is the size of each data line, 33 is the size of each header */ + size_t bufsz = + ((sizeof(struct mvm_statistics_rx) / sizeof(__le32)) * 43) + + (4 * 33) + 1; + + struct mvm_statistics_rx_phy *ofdm; + struct mvm_statistics_rx_phy *cck; + struct mvm_statistics_rx_non_phy *general; + struct mvm_statistics_rx_ht_phy *ht; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + mutex_lock(&mvm->mutex); + + ofdm = &mvm->rx_stats.ofdm; + cck = &mvm->rx_stats.cck; + general = &mvm->rx_stats.general; + ht = &mvm->rx_stats.ofdm_ht; + + pos += scnprintf(buf + pos, bufsz - pos, fmt_header, + "Statistics_Rx - OFDM"); + PRINT_STATS_LE32(ofdm, ina_cnt); + PRINT_STATS_LE32(ofdm, fina_cnt); + PRINT_STATS_LE32(ofdm, plcp_err); + PRINT_STATS_LE32(ofdm, crc32_err); + PRINT_STATS_LE32(ofdm, overrun_err); + PRINT_STATS_LE32(ofdm, early_overrun_err); + PRINT_STATS_LE32(ofdm, crc32_good); + PRINT_STATS_LE32(ofdm, false_alarm_cnt); + PRINT_STATS_LE32(ofdm, fina_sync_err_cnt); + PRINT_STATS_LE32(ofdm, sfd_timeout); + PRINT_STATS_LE32(ofdm, fina_timeout); + PRINT_STATS_LE32(ofdm, unresponded_rts); + PRINT_STATS_LE32(ofdm, rxe_frame_lmt_overrun); + PRINT_STATS_LE32(ofdm, sent_ack_cnt); + PRINT_STATS_LE32(ofdm, sent_cts_cnt); + PRINT_STATS_LE32(ofdm, sent_ba_rsp_cnt); + PRINT_STATS_LE32(ofdm, dsp_self_kill); + PRINT_STATS_LE32(ofdm, mh_format_err); + PRINT_STATS_LE32(ofdm, re_acq_main_rssi_sum); + PRINT_STATS_LE32(ofdm, reserved); + + pos += scnprintf(buf + pos, bufsz - pos, fmt_header, + "Statistics_Rx - CCK"); + PRINT_STATS_LE32(cck, ina_cnt); + PRINT_STATS_LE32(cck, fina_cnt); + PRINT_STATS_LE32(cck, plcp_err); + PRINT_STATS_LE32(cck, crc32_err); + PRINT_STATS_LE32(cck, overrun_err); + PRINT_STATS_LE32(cck, early_overrun_err); + PRINT_STATS_LE32(cck, crc32_good); + PRINT_STATS_LE32(cck, false_alarm_cnt); + PRINT_STATS_LE32(cck, fina_sync_err_cnt); + PRINT_STATS_LE32(cck, sfd_timeout); + PRINT_STATS_LE32(cck, fina_timeout); + PRINT_STATS_LE32(cck, unresponded_rts); + PRINT_STATS_LE32(cck, rxe_frame_lmt_overrun); + PRINT_STATS_LE32(cck, sent_ack_cnt); + PRINT_STATS_LE32(cck, sent_cts_cnt); + PRINT_STATS_LE32(cck, sent_ba_rsp_cnt); + PRINT_STATS_LE32(cck, dsp_self_kill); + PRINT_STATS_LE32(cck, mh_format_err); + PRINT_STATS_LE32(cck, re_acq_main_rssi_sum); + PRINT_STATS_LE32(cck, reserved); + + pos += scnprintf(buf + pos, bufsz - pos, fmt_header, + "Statistics_Rx - GENERAL"); + PRINT_STATS_LE32(general, bogus_cts); + PRINT_STATS_LE32(general, bogus_ack); + PRINT_STATS_LE32(general, non_bssid_frames); + PRINT_STATS_LE32(general, filtered_frames); + PRINT_STATS_LE32(general, non_channel_beacons); + PRINT_STATS_LE32(general, channel_beacons); + PRINT_STATS_LE32(general, num_missed_bcon); + PRINT_STATS_LE32(general, adc_rx_saturation_time); + PRINT_STATS_LE32(general, ina_detection_search_time); + PRINT_STATS_LE32(general, beacon_silence_rssi_a); + PRINT_STATS_LE32(general, beacon_silence_rssi_b); + PRINT_STATS_LE32(general, beacon_silence_rssi_c); + PRINT_STATS_LE32(general, interference_data_flag); + PRINT_STATS_LE32(general, channel_load); + PRINT_STATS_LE32(general, dsp_false_alarms); + PRINT_STATS_LE32(general, beacon_rssi_a); + PRINT_STATS_LE32(general, beacon_rssi_b); + PRINT_STATS_LE32(general, beacon_rssi_c); + PRINT_STATS_LE32(general, beacon_energy_a); + PRINT_STATS_LE32(general, beacon_energy_b); + PRINT_STATS_LE32(general, beacon_energy_c); + PRINT_STATS_LE32(general, num_bt_kills); + PRINT_STATS_LE32(general, mac_id); + PRINT_STATS_LE32(general, directed_data_mpdu); + + pos += scnprintf(buf + pos, bufsz - pos, fmt_header, + "Statistics_Rx - HT"); + PRINT_STATS_LE32(ht, plcp_err); + PRINT_STATS_LE32(ht, overrun_err); + PRINT_STATS_LE32(ht, early_overrun_err); + PRINT_STATS_LE32(ht, crc32_good); + PRINT_STATS_LE32(ht, crc32_err); + PRINT_STATS_LE32(ht, mh_format_err); + PRINT_STATS_LE32(ht, agg_crc32_good); + PRINT_STATS_LE32(ht, agg_mpdu_cnt); + PRINT_STATS_LE32(ht, agg_cnt); + PRINT_STATS_LE32(ht, unsupport_mcs); + + mutex_unlock(&mvm->mutex); + + ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); + kfree(buf); + + return ret; +} +#undef PRINT_STAT_LE32 + +static ssize_t iwl_dbgfs_frame_stats_read(struct iwl_mvm *mvm, + char __user *user_buf, size_t count, + loff_t *ppos, + struct iwl_mvm_frame_stats *stats) +{ + char *buff, *pos, *endpos; + int idx, i; + int ret; + static const size_t bufsz = 1024; + + buff = kmalloc(bufsz, GFP_KERNEL); + if (!buff) + return -ENOMEM; + + spin_lock_bh(&mvm->drv_stats_lock); + + pos = buff; + endpos = pos + bufsz; + + pos += scnprintf(pos, endpos - pos, + "Legacy/HT/VHT\t:\t%d/%d/%d\n", + stats->legacy_frames, + stats->ht_frames, + stats->vht_frames); + pos += scnprintf(pos, endpos - pos, "20/40/80\t:\t%d/%d/%d\n", + stats->bw_20_frames, + stats->bw_40_frames, + stats->bw_80_frames); + pos += scnprintf(pos, endpos - pos, "NGI/SGI\t\t:\t%d/%d\n", + stats->ngi_frames, + stats->sgi_frames); + pos += scnprintf(pos, endpos - pos, "SISO/MIMO2\t:\t%d/%d\n", + stats->siso_frames, + stats->mimo2_frames); + pos += scnprintf(pos, endpos - pos, "FAIL/SCSS\t:\t%d/%d\n", + stats->fail_frames, + stats->success_frames); + pos += scnprintf(pos, endpos - pos, "MPDUs agg\t:\t%d\n", + stats->agg_frames); + pos += scnprintf(pos, endpos - pos, "A-MPDUs\t\t:\t%d\n", + stats->ampdu_count); + pos += scnprintf(pos, endpos - pos, "Avg MPDUs/A-MPDU:\t%d\n", + stats->ampdu_count > 0 ? + (stats->agg_frames / stats->ampdu_count) : 0); + + pos += scnprintf(pos, endpos - pos, "Last Rates\n"); + + idx = stats->last_frame_idx - 1; + for (i = 0; i < ARRAY_SIZE(stats->last_rates); i++) { + idx = (idx + 1) % ARRAY_SIZE(stats->last_rates); + if (stats->last_rates[idx] == 0) + continue; + pos += scnprintf(pos, endpos - pos, "Rate[%d]: ", + (int)(ARRAY_SIZE(stats->last_rates) - i)); + pos += rs_pretty_print_rate(pos, stats->last_rates[idx]); + } + spin_unlock_bh(&mvm->drv_stats_lock); + + ret = simple_read_from_buffer(user_buf, count, ppos, buff, pos - buff); + kfree(buff); + + return ret; +} + +static ssize_t iwl_dbgfs_drv_rx_stats_read(struct file *file, + char __user *user_buf, size_t count, + loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + + return iwl_dbgfs_frame_stats_read(mvm, user_buf, count, ppos, + &mvm->drv_rx_stats); +} + +static ssize_t iwl_dbgfs_fw_restart_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int __maybe_unused ret; + + mutex_lock(&mvm->mutex); + + /* allow one more restart that we're provoking here */ + if (mvm->restart_fw >= 0) + mvm->restart_fw++; + + /* take the return value to make compiler happy - it will fail anyway */ + ret = iwl_mvm_send_cmd_pdu(mvm, REPLY_ERROR, 0, 0, NULL); + + mutex_unlock(&mvm->mutex); + + return count; +} + +static ssize_t iwl_dbgfs_fw_nmi_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_NMI); + if (ret) + return ret; + + iwl_force_nmi(mvm->trans); + + iwl_mvm_unref(mvm, IWL_MVM_REF_NMI); + + return count; +} + +static ssize_t +iwl_dbgfs_scan_ant_rxchain_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + int pos = 0; + char buf[32]; + const size_t bufsz = sizeof(buf); + + /* print which antennas were set for the scan command by the user */ + pos += scnprintf(buf + pos, bufsz - pos, "Antennas for scan: "); + if (mvm->scan_rx_ant & ANT_A) + pos += scnprintf(buf + pos, bufsz - pos, "A"); + if (mvm->scan_rx_ant & ANT_B) + pos += scnprintf(buf + pos, bufsz - pos, "B"); + if (mvm->scan_rx_ant & ANT_C) + pos += scnprintf(buf + pos, bufsz - pos, "C"); + pos += scnprintf(buf + pos, bufsz - pos, " (%hhx)\n", mvm->scan_rx_ant); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +static ssize_t +iwl_dbgfs_scan_ant_rxchain_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + u8 scan_rx_ant; + + if (sscanf(buf, "%hhx", &scan_rx_ant) != 1) + return -EINVAL; + if (scan_rx_ant > ANT_ABC) + return -EINVAL; + if (scan_rx_ant & ~(iwl_mvm_get_valid_rx_ant(mvm))) + return -EINVAL; + + if (mvm->scan_rx_ant != scan_rx_ant) { + mvm->scan_rx_ant = scan_rx_ant; + if (fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_UMAC_SCAN)) + iwl_mvm_config_scan(mvm); + } + + return count; +} + +static ssize_t iwl_dbgfs_indirection_tbl_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + struct iwl_rss_config_cmd cmd = { + .flags = cpu_to_le32(IWL_RSS_ENABLE), + .hash_mask = IWL_RSS_HASH_TYPE_IPV4_TCP | + IWL_RSS_HASH_TYPE_IPV4_UDP | + IWL_RSS_HASH_TYPE_IPV4_PAYLOAD | + IWL_RSS_HASH_TYPE_IPV6_TCP | + IWL_RSS_HASH_TYPE_IPV6_UDP | + IWL_RSS_HASH_TYPE_IPV6_PAYLOAD, + }; + int ret, i, num_repeats, nbytes = count / 2; + + ret = hex2bin(cmd.indirection_table, buf, nbytes); + if (ret) + return ret; + + /* + * The input is the redirection table, partial or full. + * Repeat the pattern if needed. + * For example, input of 01020F will be repeated 42 times, + * indirecting RSS hash results to queues 1, 2, 15 (skipping + * queues 3 - 14). + */ + num_repeats = ARRAY_SIZE(cmd.indirection_table) / nbytes; + for (i = 1; i < num_repeats; i++) + memcpy(&cmd.indirection_table[i * nbytes], + cmd.indirection_table, nbytes); + /* handle cut in the middle pattern for the last places */ + memcpy(&cmd.indirection_table[i * nbytes], cmd.indirection_table, + ARRAY_SIZE(cmd.indirection_table) % nbytes); + + netdev_rss_key_fill(cmd.secret_key, sizeof(cmd.secret_key)); + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_send_cmd_pdu(mvm, RSS_CONFIG_CMD, 0, sizeof(cmd), &cmd); + mutex_unlock(&mvm->mutex); + + return ret ?: count; +} + +static ssize_t iwl_dbgfs_inject_packet_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + struct iwl_rx_cmd_buffer rxb = { + ._rx_page_order = 0, + .truesize = 0, /* not used */ + ._offset = 0, + }; + struct iwl_rx_packet *pkt; + struct iwl_rx_mpdu_desc *desc; + int bin_len = count / 2; + int ret = -EINVAL; + + /* supporting only 9000 descriptor */ + if (!mvm->trans->cfg->mq_rx_supported) + return -ENOTSUPP; + + rxb._page = alloc_pages(GFP_ATOMIC, 0); + if (!rxb._page) + return -ENOMEM; + pkt = rxb_addr(&rxb); + + ret = hex2bin(page_address(rxb._page), buf, bin_len); + if (ret) + goto out; + + /* avoid invalid memory access */ + if (bin_len < sizeof(*pkt) + sizeof(*desc)) + goto out; + + /* check this is RX packet */ + if (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd) != + WIDE_ID(LEGACY_GROUP, REPLY_RX_MPDU_CMD)) + goto out; + + /* check the length in metadata matches actual received length */ + desc = (void *)pkt->data; + if (le16_to_cpu(desc->mpdu_len) != + (bin_len - sizeof(*desc) - sizeof(*pkt))) + goto out; + + local_bh_disable(); + iwl_mvm_rx_mpdu_mq(mvm, NULL, &rxb, 0); + local_bh_enable(); + ret = 0; + +out: + iwl_free_rxb(&rxb); + + return ret ?: count; +} + +static ssize_t iwl_dbgfs_fw_dbg_conf_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + int conf; + char buf[8]; + const size_t bufsz = sizeof(buf); + int pos = 0; + + mutex_lock(&mvm->mutex); + conf = mvm->fw_dbg_conf; + mutex_unlock(&mvm->mutex); + + pos += scnprintf(buf + pos, bufsz - pos, "%d\n", conf); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +/* + * Enable / Disable continuous recording. + * Cause the FW to start continuous recording, by sending the relevant hcmd. + * Enable: input of every integer larger than 0, ENABLE_CONT_RECORDING. + * Disable: for 0 as input, DISABLE_CONT_RECORDING. + */ +static ssize_t iwl_dbgfs_cont_recording_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + struct iwl_trans *trans = mvm->trans; + const struct iwl_fw_dbg_dest_tlv *dest = trans->dbg_dest_tlv; + struct iwl_continuous_record_cmd cont_rec = {}; + int ret, rec_mode; + + if (!dest) + return -EOPNOTSUPP; + + if (dest->monitor_mode != SMEM_MODE || + trans->cfg->device_family != IWL_DEVICE_FAMILY_8000) + return -EOPNOTSUPP; + + ret = kstrtoint(buf, 0, &rec_mode); + if (ret) + return ret; + + cont_rec.record_mode.enable_recording = rec_mode ? + cpu_to_le16(ENABLE_CONT_RECORDING) : + cpu_to_le16(DISABLE_CONT_RECORDING); + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_send_cmd_pdu(mvm, LDBG_CONFIG_CMD, 0, + sizeof(cont_rec), &cont_rec); + mutex_unlock(&mvm->mutex); + + return ret ?: count; +} + +static ssize_t iwl_dbgfs_fw_dbg_conf_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + unsigned int conf_id; + int ret; + + ret = kstrtouint(buf, 0, &conf_id); + if (ret) + return ret; + + if (WARN_ON(conf_id >= FW_DBG_CONF_MAX)) + return -EINVAL; + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_start_fw_dbg_conf(mvm, conf_id); + mutex_unlock(&mvm->mutex); + + return ret ?: count; +} + +static ssize_t iwl_dbgfs_fw_dbg_collect_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + int ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE); + + if (ret) + return ret; + if (count == 0) + return 0; + + iwl_mvm_fw_dbg_collect(mvm, FW_DBG_TRIGGER_USER, buf, + (count - 1), NULL); + + iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE); + + return count; +} + +static ssize_t iwl_dbgfs_max_amsdu_len_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + unsigned int max_amsdu_len; + int ret; + + ret = kstrtouint(buf, 0, &max_amsdu_len); + if (ret) + return ret; + + if (max_amsdu_len > IEEE80211_MAX_MPDU_LEN_VHT_11454) + return -EINVAL; + mvm->max_amsdu_len = max_amsdu_len; + + return count; +} + +#define ADD_TEXT(...) pos += scnprintf(buf + pos, bufsz - pos, __VA_ARGS__) +#ifdef CPTCFG_IWLWIFI_BCAST_FILTERING +static ssize_t iwl_dbgfs_bcast_filters_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + struct iwl_bcast_filter_cmd cmd; + const struct iwl_fw_bcast_filter *filter; + char *buf; + int bufsz = 1024; + int i, j, pos = 0; + ssize_t ret; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + mutex_lock(&mvm->mutex); + if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) { + ADD_TEXT("None\n"); + mutex_unlock(&mvm->mutex); + goto out; + } + mutex_unlock(&mvm->mutex); + + for (i = 0; cmd.filters[i].attrs[0].mask; i++) { + filter = &cmd.filters[i]; + + ADD_TEXT("Filter [%d]:\n", i); + ADD_TEXT("\tDiscard=%d\n", filter->discard); + ADD_TEXT("\tFrame Type: %s\n", + filter->frame_type ? "IPv4" : "Generic"); + + for (j = 0; j < ARRAY_SIZE(filter->attrs); j++) { + const struct iwl_fw_bcast_filter_attr *attr; + + attr = &filter->attrs[j]; + if (!attr->mask) + break; + + ADD_TEXT("\tAttr [%d]: offset=%d (from %s), mask=0x%x, value=0x%x reserved=0x%x\n", + j, attr->offset, + attr->offset_type ? "IP End" : + "Payload Start", + be32_to_cpu(attr->mask), + be32_to_cpu(attr->val), + le16_to_cpu(attr->reserved1)); + } + } +out: + ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); + kfree(buf); + return ret; +} + +static ssize_t iwl_dbgfs_bcast_filters_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int pos, next_pos; + struct iwl_fw_bcast_filter filter = {}; + struct iwl_bcast_filter_cmd cmd; + u32 filter_id, attr_id, mask, value; + int err = 0; + + if (sscanf(buf, "%d %hhi %hhi %n", &filter_id, &filter.discard, + &filter.frame_type, &pos) != 3) + return -EINVAL; + + if (filter_id >= ARRAY_SIZE(mvm->dbgfs_bcast_filtering.cmd.filters) || + filter.frame_type > BCAST_FILTER_FRAME_TYPE_IPV4) + return -EINVAL; + + for (attr_id = 0; attr_id < ARRAY_SIZE(filter.attrs); + attr_id++) { + struct iwl_fw_bcast_filter_attr *attr = + &filter.attrs[attr_id]; + + if (pos >= count) + break; + + if (sscanf(&buf[pos], "%hhi %hhi %i %i %n", + &attr->offset, &attr->offset_type, + &mask, &value, &next_pos) != 4) + return -EINVAL; + + attr->mask = cpu_to_be32(mask); + attr->val = cpu_to_be32(value); + if (mask) + filter.num_attrs++; + + pos += next_pos; + } + + mutex_lock(&mvm->mutex); + memcpy(&mvm->dbgfs_bcast_filtering.cmd.filters[filter_id], + &filter, sizeof(filter)); + + /* send updated bcast filtering configuration */ + if (mvm->dbgfs_bcast_filtering.override && + iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) + err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, + sizeof(cmd), &cmd); + mutex_unlock(&mvm->mutex); + + return err ?: count; +} + +static ssize_t iwl_dbgfs_bcast_filters_macs_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + struct iwl_bcast_filter_cmd cmd; + char *buf; + int bufsz = 1024; + int i, pos = 0; + ssize_t ret; + + buf = kzalloc(bufsz, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + mutex_lock(&mvm->mutex); + if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) { + ADD_TEXT("None\n"); + mutex_unlock(&mvm->mutex); + goto out; + } + mutex_unlock(&mvm->mutex); + + for (i = 0; i < ARRAY_SIZE(cmd.macs); i++) { + const struct iwl_fw_bcast_mac *mac = &cmd.macs[i]; + + ADD_TEXT("Mac [%d]: discard=%d attached_filters=0x%x\n", + i, mac->default_discard, mac->attached_filters); + } +out: + ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos); + kfree(buf); + return ret; +} + +static ssize_t iwl_dbgfs_bcast_filters_macs_write(struct iwl_mvm *mvm, + char *buf, size_t count, + loff_t *ppos) +{ + struct iwl_bcast_filter_cmd cmd; + struct iwl_fw_bcast_mac mac = {}; + u32 mac_id, attached_filters; + int err = 0; + + if (!mvm->bcast_filters) + return -ENOENT; + + if (sscanf(buf, "%d %hhi %i", &mac_id, &mac.default_discard, + &attached_filters) != 3) + return -EINVAL; + + if (mac_id >= ARRAY_SIZE(cmd.macs) || + mac.default_discard > 1 || + attached_filters >= BIT(ARRAY_SIZE(cmd.filters))) + return -EINVAL; + + mac.attached_filters = cpu_to_le16(attached_filters); + + mutex_lock(&mvm->mutex); + memcpy(&mvm->dbgfs_bcast_filtering.cmd.macs[mac_id], + &mac, sizeof(mac)); + + /* send updated bcast filtering configuration */ + if (mvm->dbgfs_bcast_filtering.override && + iwl_mvm_bcast_filter_build_cmd(mvm, &cmd)) + err = iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0, + sizeof(cmd), &cmd); + mutex_unlock(&mvm->mutex); + + return err ?: count; +} +#endif + +#ifdef CONFIG_PM_SLEEP +static ssize_t iwl_dbgfs_d3_sram_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int store; + + 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 %16ph\n", ofs, ptr + ofs); + } + } 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 PRINT_MVM_REF(ref) do { \ + if (mvm->refs[ref]) \ + pos += scnprintf(buf + pos, bufsz - pos, \ + "\t(0x%lx): %d %s\n", \ + BIT(ref), mvm->refs[ref], #ref); \ +} while (0) + +static ssize_t iwl_dbgfs_d0i3_refs_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + int i, pos = 0; + char buf[256]; + const size_t bufsz = sizeof(buf); + u32 refs = 0; + + for (i = 0; i < IWL_MVM_REF_COUNT; i++) + if (mvm->refs[i]) + refs |= BIT(i); + + pos += scnprintf(buf + pos, bufsz - pos, "taken mvm refs: 0x%x\n", + refs); + + PRINT_MVM_REF(IWL_MVM_REF_UCODE_DOWN); + PRINT_MVM_REF(IWL_MVM_REF_SCAN); + PRINT_MVM_REF(IWL_MVM_REF_ROC); + PRINT_MVM_REF(IWL_MVM_REF_ROC_AUX); + PRINT_MVM_REF(IWL_MVM_REF_P2P_CLIENT); + PRINT_MVM_REF(IWL_MVM_REF_AP_IBSS); + PRINT_MVM_REF(IWL_MVM_REF_USER); + PRINT_MVM_REF(IWL_MVM_REF_TX); + PRINT_MVM_REF(IWL_MVM_REF_TX_AGG); + PRINT_MVM_REF(IWL_MVM_REF_ADD_IF); + PRINT_MVM_REF(IWL_MVM_REF_START_AP); + PRINT_MVM_REF(IWL_MVM_REF_BSS_CHANGED); + PRINT_MVM_REF(IWL_MVM_REF_PREPARE_TX); + PRINT_MVM_REF(IWL_MVM_REF_PROTECT_TDLS); + PRINT_MVM_REF(IWL_MVM_REF_CHECK_CTKILL); + PRINT_MVM_REF(IWL_MVM_REF_PRPH_READ); + PRINT_MVM_REF(IWL_MVM_REF_PRPH_WRITE); + PRINT_MVM_REF(IWL_MVM_REF_NMI); + PRINT_MVM_REF(IWL_MVM_REF_TM_CMD); + PRINT_MVM_REF(IWL_MVM_REF_EXIT_WORK); + PRINT_MVM_REF(IWL_MVM_REF_PROTECT_CSA); + PRINT_MVM_REF(IWL_MVM_REF_FW_DBG_COLLECT); + PRINT_MVM_REF(IWL_MVM_REF_INIT_UCODE); + PRINT_MVM_REF(IWL_MVM_REF_SENDING_CMD); + PRINT_MVM_REF(IWL_MVM_REF_RX); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +static ssize_t iwl_dbgfs_d0i3_refs_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + unsigned long value; + int ret; + bool taken; + + ret = kstrtoul(buf, 10, &value); + if (ret < 0) + return ret; + + mutex_lock(&mvm->mutex); + + taken = mvm->refs[IWL_MVM_REF_USER]; + if (value == 1 && !taken) + iwl_mvm_ref(mvm, IWL_MVM_REF_USER); + else if (value == 0 && taken) + iwl_mvm_unref(mvm, IWL_MVM_REF_USER); + else + ret = -EINVAL; + + mutex_unlock(&mvm->mutex); + + if (ret < 0) + return ret; + return count; +} + +#define MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \ + _MVM_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm) +#define MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \ + _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_mvm) +#define MVM_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \ + if (!debugfs_create_file(alias, mode, parent, mvm, \ + &iwl_dbgfs_##name##_ops)) \ + goto err; \ + } while (0) +#define MVM_DEBUGFS_ADD_FILE(name, parent, mode) \ + MVM_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode) + +static ssize_t +iwl_dbgfs_prph_reg_read(struct file *file, + char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + int pos = 0; + char buf[32]; + const size_t bufsz = sizeof(buf); + int ret; + + if (!mvm->dbgfs_prph_reg_addr) + return -EINVAL; + + ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_READ); + if (ret) + return ret; + + pos += scnprintf(buf + pos, bufsz - pos, "Reg 0x%x: (0x%x)\n", + mvm->dbgfs_prph_reg_addr, + iwl_read_prph(mvm->trans, mvm->dbgfs_prph_reg_addr)); + + iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_READ); + + return simple_read_from_buffer(user_buf, count, ppos, buf, pos); +} + +static ssize_t +iwl_dbgfs_prph_reg_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + u8 args; + u32 value; + int ret; + + args = sscanf(buf, "%i %i", &mvm->dbgfs_prph_reg_addr, &value); + /* if we only want to set the reg address - nothing more to do */ + if (args == 1) + goto out; + + /* otherwise, make sure we have both address and value */ + if (args != 2) + return -EINVAL; + + ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_PRPH_WRITE); + if (ret) + return ret; + + iwl_write_prph(mvm->trans, mvm->dbgfs_prph_reg_addr, value); + + iwl_mvm_unref(mvm, IWL_MVM_REF_PRPH_WRITE); +out: + return count; +} + +static ssize_t +iwl_dbgfs_send_echo_cmd_write(struct iwl_mvm *mvm, char *buf, + size_t count, loff_t *ppos) +{ + int ret; + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_send_cmd_pdu(mvm, ECHO_CMD, 0, 0, NULL); + mutex_unlock(&mvm->mutex); + + return ret ?: count; +} + +MVM_DEBUGFS_READ_WRITE_FILE_OPS(prph_reg, 64); + +/* Device wide debugfs entries */ +MVM_DEBUGFS_READ_FILE_OPS(ctdp_budget); +MVM_DEBUGFS_WRITE_FILE_OPS(stop_ctdp, 8); +MVM_DEBUGFS_WRITE_FILE_OPS(tx_flush, 16); +MVM_DEBUGFS_WRITE_FILE_OPS(sta_drain, 8); +MVM_DEBUGFS_WRITE_FILE_OPS(send_echo_cmd, 8); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(sram, 64); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(set_nic_temperature, 64); +MVM_DEBUGFS_READ_FILE_OPS(nic_temp); +MVM_DEBUGFS_READ_FILE_OPS(stations); +MVM_DEBUGFS_READ_FILE_OPS(bt_notif); +MVM_DEBUGFS_READ_FILE_OPS(bt_cmd); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(disable_power_off, 64); +MVM_DEBUGFS_READ_FILE_OPS(fw_rx_stats); +MVM_DEBUGFS_READ_FILE_OPS(drv_rx_stats); +MVM_DEBUGFS_WRITE_FILE_OPS(fw_restart, 10); +MVM_DEBUGFS_WRITE_FILE_OPS(fw_nmi, 10); +MVM_DEBUGFS_WRITE_FILE_OPS(bt_tx_prio, 10); +MVM_DEBUGFS_WRITE_FILE_OPS(bt_force_ant, 10); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(scan_ant_rxchain, 8); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(d0i3_refs, 8); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(fw_dbg_conf, 8); +MVM_DEBUGFS_WRITE_FILE_OPS(fw_dbg_collect, 64); +MVM_DEBUGFS_WRITE_FILE_OPS(cont_recording, 8); +MVM_DEBUGFS_WRITE_FILE_OPS(max_amsdu_len, 8); +MVM_DEBUGFS_WRITE_FILE_OPS(indirection_tbl, + (IWL_RSS_INDIRECTION_TABLE_SIZE * 2)); +MVM_DEBUGFS_WRITE_FILE_OPS(inject_packet, 512); + +#ifdef CPTCFG_IWLWIFI_BCAST_FILTERING +MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters, 256); +MVM_DEBUGFS_READ_WRITE_FILE_OPS(bcast_filters_macs, 256); +#endif + +#ifdef CONFIG_PM_SLEEP +MVM_DEBUGFS_READ_WRITE_FILE_OPS(d3_sram, 8); +#endif + +static ssize_t iwl_dbgfs_mem_read(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + struct iwl_dbg_mem_access_cmd cmd = {}; + struct iwl_dbg_mem_access_rsp *rsp; + struct iwl_host_cmd hcmd = { + .flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL, + .data = { &cmd, }, + .len = { sizeof(cmd) }, + }; + size_t delta; + ssize_t ret, len; + + hcmd.id = iwl_cmd_id(*ppos >> 24 ? UMAC_RD_WR : LMAC_RD_WR, + DEBUG_GROUP, 0); + cmd.op = cpu_to_le32(DEBUG_MEM_OP_READ); + + /* Take care of alignment of both the position and the length */ + delta = *ppos & 0x3; + cmd.addr = cpu_to_le32(*ppos - delta); + cmd.len = cpu_to_le32(min(ALIGN(count + delta, 4) / 4, + (size_t)DEBUG_MEM_MAX_SIZE_DWORDS)); + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_send_cmd(mvm, &hcmd); + mutex_unlock(&mvm->mutex); + + if (ret < 0) + return ret; + + rsp = (void *)hcmd.resp_pkt->data; + if (le32_to_cpu(rsp->status) != DEBUG_MEM_STATUS_SUCCESS) { + ret = -ENXIO; + goto out; + } + + len = min((size_t)le32_to_cpu(rsp->len) << 2, + iwl_rx_packet_payload_len(hcmd.resp_pkt) - sizeof(*rsp)); + len = min(len - delta, count); + if (len < 0) { + ret = -EFAULT; + goto out; + } + + ret = len - copy_to_user(user_buf, (void *)rsp->data + delta, len); + *ppos += ret; + +out: + iwl_free_resp(&hcmd); + return ret; +} + +static ssize_t iwl_dbgfs_mem_write(struct file *file, + const char __user *user_buf, size_t count, + loff_t *ppos) +{ + struct iwl_mvm *mvm = file->private_data; + struct iwl_dbg_mem_access_cmd *cmd; + struct iwl_dbg_mem_access_rsp *rsp; + struct iwl_host_cmd hcmd = {}; + size_t cmd_size; + size_t data_size; + u32 op, len; + ssize_t ret; + + hcmd.id = iwl_cmd_id(*ppos >> 24 ? UMAC_RD_WR : LMAC_RD_WR, + DEBUG_GROUP, 0); + + if (*ppos & 0x3 || count < 4) { + op = DEBUG_MEM_OP_WRITE_BYTES; + len = min(count, (size_t)(4 - (*ppos & 0x3))); + data_size = len; + } else { + op = DEBUG_MEM_OP_WRITE; + len = min(count >> 2, (size_t)DEBUG_MEM_MAX_SIZE_DWORDS); + data_size = len << 2; + } + + cmd_size = sizeof(*cmd) + ALIGN(data_size, 4); + cmd = kzalloc(cmd_size, GFP_KERNEL); + if (!cmd) + return -ENOMEM; + + cmd->op = cpu_to_le32(op); + cmd->len = cpu_to_le32(len); + cmd->addr = cpu_to_le32(*ppos); + if (copy_from_user((void *)cmd->data, user_buf, data_size)) { + kfree(cmd); + return -EFAULT; + } + + hcmd.flags = CMD_WANT_SKB | CMD_SEND_IN_RFKILL, + hcmd.data[0] = (void *)cmd; + hcmd.len[0] = cmd_size; + + mutex_lock(&mvm->mutex); + ret = iwl_mvm_send_cmd(mvm, &hcmd); + mutex_unlock(&mvm->mutex); + + kfree(cmd); + + if (ret < 0) + return ret; + + rsp = (void *)hcmd.resp_pkt->data; + if (rsp->status != DEBUG_MEM_STATUS_SUCCESS) { + ret = -ENXIO; + goto out; + } + + ret = data_size; + *ppos += ret; + +out: + iwl_free_resp(&hcmd); + return ret; +} + +static const struct file_operations iwl_dbgfs_mem_ops = { + .read = iwl_dbgfs_mem_read, + .write = iwl_dbgfs_mem_write, + .open = simple_open, + .llseek = default_llseek, +}; + +int iwl_mvm_dbgfs_register(struct iwl_mvm *mvm, struct dentry *dbgfs_dir) +{ + struct dentry *bcast_dir __maybe_unused; + char buf[100]; + + spin_lock_init(&mvm->drv_stats_lock); + + 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(set_nic_temperature, mvm->debugfs_dir, + S_IWUSR | S_IRUSR); + MVM_DEBUGFS_ADD_FILE(nic_temp, dbgfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(ctdp_budget, dbgfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(stop_ctdp, dbgfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(stations, dbgfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(bt_notif, dbgfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(bt_cmd, dbgfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(disable_power_off, mvm->debugfs_dir, + S_IRUSR | S_IWUSR); + MVM_DEBUGFS_ADD_FILE(fw_rx_stats, mvm->debugfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(drv_rx_stats, mvm->debugfs_dir, S_IRUSR); + MVM_DEBUGFS_ADD_FILE(fw_restart, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(fw_nmi, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(bt_tx_prio, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(bt_force_ant, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(scan_ant_rxchain, mvm->debugfs_dir, + S_IWUSR | S_IRUSR); + MVM_DEBUGFS_ADD_FILE(prph_reg, mvm->debugfs_dir, S_IWUSR | S_IRUSR); + MVM_DEBUGFS_ADD_FILE(d0i3_refs, mvm->debugfs_dir, S_IRUSR | S_IWUSR); + MVM_DEBUGFS_ADD_FILE(fw_dbg_conf, mvm->debugfs_dir, S_IRUSR | S_IWUSR); + MVM_DEBUGFS_ADD_FILE(fw_dbg_collect, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(max_amsdu_len, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(send_echo_cmd, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(cont_recording, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(indirection_tbl, mvm->debugfs_dir, S_IWUSR); + MVM_DEBUGFS_ADD_FILE(inject_packet, mvm->debugfs_dir, S_IWUSR); + if (!debugfs_create_bool("enable_scan_iteration_notif", + S_IRUSR | S_IWUSR, + mvm->debugfs_dir, + &mvm->scan_iter_notif_enabled)) + goto err; + if (!debugfs_create_bool("drop_bcn_ap_mode", S_IRUSR | S_IWUSR, + mvm->debugfs_dir, &mvm->drop_bcn_ap_mode)) + goto err; + +#ifdef CPTCFG_IWLWIFI_BCAST_FILTERING + if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING) { + bcast_dir = debugfs_create_dir("bcast_filtering", + mvm->debugfs_dir); + if (!bcast_dir) + goto err; + + if (!debugfs_create_bool("override", S_IRUSR | S_IWUSR, + bcast_dir, + &mvm->dbgfs_bcast_filtering.override)) + goto err; + + MVM_DEBUGFS_ADD_FILE_ALIAS("filters", bcast_filters, + bcast_dir, S_IWUSR | S_IRUSR); + MVM_DEBUGFS_ADD_FILE_ALIAS("macs", bcast_filters_macs, + bcast_dir, S_IWUSR | S_IRUSR); + } +#endif + +#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; + if (!debugfs_create_u32("last_netdetect_scans", S_IRUSR, + mvm->debugfs_dir, &mvm->last_netdetect_scans)) + goto err; +#endif + + if (!debugfs_create_u8("ps_disabled", S_IRUSR, + mvm->debugfs_dir, &mvm->ps_disabled)) + goto err; + if (!debugfs_create_blob("nvm_hw", S_IRUSR, + mvm->debugfs_dir, &mvm->nvm_hw_blob)) + goto err; + if (!debugfs_create_blob("nvm_sw", S_IRUSR, + mvm->debugfs_dir, &mvm->nvm_sw_blob)) + goto err; + if (!debugfs_create_blob("nvm_calib", S_IRUSR, + mvm->debugfs_dir, &mvm->nvm_calib_blob)) + goto err; + if (!debugfs_create_blob("nvm_prod", S_IRUSR, + mvm->debugfs_dir, &mvm->nvm_prod_blob)) + goto err; + if (!debugfs_create_blob("nvm_phy_sku", S_IRUSR, + mvm->debugfs_dir, &mvm->nvm_phy_sku_blob)) + goto err; + + debugfs_create_file("mem", S_IRUSR | S_IWUSR, dbgfs_dir, mvm, + &iwl_dbgfs_mem_ops); + + /* + * Create a symlink with mac80211. It will be removed when mac80211 + * exists (before the opmode exists which removes the target.) + */ +#if LINUX_VERSION_IS_GEQ(3,12,0) + snprintf(buf, 100, "../../%pd2", dbgfs_dir->d_parent); +#else + snprintf(buf, 100, "../../%s/%s", + dbgfs_dir->d_parent->d_parent->d_name.name, + dbgfs_dir->d_parent->d_name.name); +#endif + 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; +} |