/******************************************************************************
*
* 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 - 2014 Intel Mobile Communications 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 <ilw@linux.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 - 2014 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 <net/mac80211.h>
#include "iwl-trans.h"
#include "iwl-op-mode.h"
#include "iwl-fw.h"
#include "iwl-debug.h"
#include "iwl-csr.h" /* for iwl_mvm_rx_card_state_notif */
#include "iwl-io.h" /* for iwl_mvm_rx_card_state_notif */
#include "iwl-eeprom-parse.h"
#include "mvm.h"
#include "iwl-phy-db.h"
#define MVM_UCODE_ALIVE_TIMEOUT HZ
#define MVM_UCODE_CALIB_TIMEOUT (2*HZ)
#define UCODE_VALID_OK cpu_to_le32(0x1)
struct iwl_mvm_alive_data {
bool valid;
u32 scd_base_addr;
};
static inline const struct fw_img *
iwl_get_ucode_image(struct iwl_mvm *mvm, enum iwl_ucode_type ucode_type)
{
if (ucode_type >= IWL_UCODE_TYPE_MAX)
return NULL;
return &mvm->fw->img[ucode_type];
}
static int iwl_send_tx_ant_cfg(struct iwl_mvm *mvm, u8 valid_tx_ant)
{
struct iwl_tx_ant_cfg_cmd tx_ant_cmd = {
.valid = cpu_to_le32(valid_tx_ant),
};
IWL_DEBUG_FW(mvm, "select valid tx ant: %u\n", valid_tx_ant);
return iwl_mvm_send_cmd_pdu(mvm, TX_ANT_CONFIGURATION_CMD, 0,
sizeof(tx_ant_cmd), &tx_ant_cmd);
}
static bool iwl_alive_fn(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
struct iwl_mvm *mvm =
container_of(notif_wait, struct iwl_mvm, notif_wait);
struct iwl_mvm_alive_data *alive_data = data;
struct mvm_alive_resp *palive;
struct mvm_alive_resp_ver2 *palive2;
if (iwl_rx_packet_payload_len(pkt) == sizeof(*palive)) {
palive = (void *)pkt->data;
mvm->support_umac_log = false;
mvm->error_event_table =
le32_to_cpu(palive->error_event_table_ptr);
mvm->log_event_table = le32_to_cpu(palive->log_event_table_ptr);
alive_data->scd_base_addr = le32_to_cpu(palive->scd_base_ptr);
alive_data->valid = le16_to_cpu(palive->status) ==
IWL_ALIVE_STATUS_OK;
IWL_DEBUG_FW(mvm,
"Alive VER1 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
le16_to_cpu(palive->status), palive->ver_type,
palive->ver_subtype, palive->flags);
} else {
palive2 = (void *)pkt->data;
mvm->error_event_table =
le32_to_cpu(palive2->error_event_table_ptr);
mvm->log_event_table =
le32_to_cpu(palive2->log_event_table_ptr);
alive_data->scd_base_addr = le32_to_cpu(palive2->scd_base_ptr);
mvm->umac_error_event_table =
le32_to_cpu(palive2->error_info_addr);
mvm->sf_space.addr = le32_to_cpu(palive2->st_fwrd_addr);
mvm->sf_space.size = le32_to_cpu(palive2->st_fwrd_size);
alive_data->valid = le16_to_cpu(palive2->status) ==
IWL_ALIVE_STATUS_OK;
if (mvm->umac_error_event_table)
mvm->support_umac_log = true;
IWL_DEBUG_FW(mvm,
"Alive VER2 ucode status 0x%04x revision 0x%01X 0x%01X flags 0x%01X\n",
le16_to_cpu(palive2->status), palive2->ver_type,
palive2->ver_subtype, palive2->flags);
IWL_DEBUG_FW(mvm,
"UMAC version: Major - 0x%x, Minor - 0x%x\n",
palive2->umac_major, palive2->umac_minor);
}
return true;
}
static bool iwl_wait_phy_db_entry(struct iwl_notif_wait_data *notif_wait,
struct iwl_rx_packet *pkt, void *data)
{
struct iwl_phy_db *phy_db = data;
if (pkt->hdr.cmd != CALIB_RES_NOTIF_PHY_DB) {
WARN_ON(pkt->hdr.cmd != INIT_COMPLETE_NOTIF);
return true;
}
WARN_ON(iwl_phy_db_set_section(phy_db, pkt, GFP_ATOMIC));
return false;
}
static int iwl_mvm_load_ucode_wait_alive(struct iwl_mvm *mvm,
enum iwl_ucode_type ucode_type)
{
struct iwl_notification_wait alive_wait;
struct iwl_mvm_alive_data alive_data;
const struct fw_img *fw;
int ret, i;
enum iwl_ucode_type old_type = mvm->cur_ucode;
static const u8 alive_cmd[] = { MVM_ALIVE };
struct iwl_sf_region st_fwrd_space;
fw = iwl_get_ucode_image(mvm, ucode_type);
if (WARN_ON(!fw))
return -EINVAL;
mvm->cur_ucode = ucode_type;
mvm->ucode_loaded = false;
iwl_init_notification_wait(&mvm->notif_wait, &alive_wait,
alive_cmd, ARRAY_SIZE(alive_cmd),
iwl_alive_fn, &alive_data);
ret = iwl_trans_start_fw(mvm->trans, fw, ucode_type == IWL_UCODE_INIT);
if (ret) {
mvm->cur_ucode = old_type;
iwl_remove_notification(&mvm->notif_wait, &alive_wait);
return ret;
}
/*
* Some things may run in the background now, but we
* just wait for the ALIVE notification here.
*/
ret = iwl_wait_notification(&mvm->notif_wait, &alive_wait,
MVM_UCODE_ALIVE_TIMEOUT);
if (ret) {
mvm->cur_ucode = old_type;
return ret;
}
if (!alive_data.valid) {
IWL_ERR(mvm, "Loaded ucode is not valid!\n");
mvm->cur_ucode = old_type;
return -EIO;
}
/*
* update the sdio allocation according to the pointer we get in the
* alive notification.
*/
st_fwrd_space.addr = mvm->sf_space.addr;
st_fwrd_space.size = mvm->sf_space.size;
ret = iwl_trans_update_sf(mvm->trans, &st_fwrd_space);
iwl_trans_fw_alive(mvm->trans, alive_data.scd_base_addr);
/*
* Note: all the queues are enabled as part of the interface
* initialization, but in firmware restart scenarios they
* could be stopped, so wake them up. In firmware restart,
* mac80211 will have the queues stopped as well until the
* reconfiguration completes. During normal startup, they
* will be empty.
*/
for (i = 0; i < IWL_MAX_HW_QUEUES; i++) {
if (i < mvm->first_agg_queue && i != IWL_MVM_CMD_QUEUE)
mvm->queue_to_mac80211[i] = i;
else
mvm->queue_to_mac80211[i] = IWL_INVALID_MAC80211_QUEUE;
}
for (i = 0; i < IEEE80211_MAX_QUEUES; i++)
atomic_set(&mvm->mac80211_queue_stop_count[i], 0);
mvm->ucode_loaded = true;
return 0;
}
static int iwl_send_phy_cfg_cmd(struct iwl_mvm *mvm)
{
struct iwl_phy_cfg_cmd phy_cfg_cmd;
enum iwl_ucode_type ucode_type = mvm->cur_ucode;
/* Set parameters */
phy_cfg_cmd.phy_cfg = cpu_to_le32(mvm->fw->phy_config);
phy_cfg_cmd.calib_control.event_trigger =
mvm->fw->default_calib[ucode_type].event_trigger;
phy_cfg_cmd.calib_control.flow_trigger =
mvm->fw->default_calib[ucode_type].flow_trigger;
IWL_DEBUG_INFO(mvm, "Sending Phy CFG command: 0x%x\n",
phy_cfg_cmd.phy_cfg);
return iwl_mvm_send_cmd_pdu(mvm, PHY_CONFIGURATION_CMD, 0,
sizeof(phy_cfg_cmd), &phy_cfg_cmd);
}
int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm, bool read_nvm)
{
struct iwl_notification_wait calib_wait;
static const u8 init_complete[] = {
INIT_COMPLETE_NOTIF,
CALIB_RES_NOTIF_PHY_DB
};
int ret;
lockdep_assert_held(&mvm->mutex);
if (WARN_ON_ONCE(mvm->init_ucode_complete || mvm->calibrating))
return 0;
iwl_init_notification_wait(&mvm->notif_wait,
&calib_wait,
init_complete,
ARRAY_SIZE(init_complete),
iwl_wait_phy_db_entry,
mvm->phy_db);
/* Will also start the device */
ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_INIT);
if (ret) {
IWL_ERR(mvm, "Failed to start INIT ucode: %d\n", ret);
goto error;
}
ret = iwl_send_bt_init_conf(mvm);
if (ret)
goto error;
/* Read the NVM only at driver load time, no need to do this twice */
if (read_nvm) {
/* Read nvm */
ret = iwl_nvm_init(mvm, true);
if (ret) {
IWL_ERR(mvm, "Failed to read NVM: %d\n", ret);
goto error;
}
}
/* In case we read the NVM from external file, load it to the NIC */
if (mvm->nvm_file_name)
iwl_mvm_load_nvm_to_nic(mvm);
ret = iwl_nvm_check_version(mvm->nvm_data, mvm->trans);
WARN_ON(ret);
/*
* abort after reading the nvm in case RF Kill is on, we will complete
* the init seq later when RF kill will switch to off
*/
if (iwl_mvm_is_radio_killed(mvm)) {
IWL_DEBUG_RF_KILL(mvm,
"jump over all phy activities due to RF kill\n");
iwl_remove_notification(&mvm->notif_wait, &calib_wait);
ret = 1;
goto out;
}
mvm->calibrating = true;
/* Send TX valid antennas before triggering calibrations */
ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
if (ret)
goto error;
/*
* Send phy configurations command to init uCode
* to start the 16.0 uCode init image internal calibrations.
*/
ret = iwl_send_phy_cfg_cmd(mvm);
if (ret) {
IWL_ERR(mvm, "Failed to run INIT calibrations: %d\n",
ret);
goto error;
}
/*
* Some things may run in the background now, but we
* just wait for the calibration complete notification.
*/
ret = iwl_wait_notification(&mvm->notif_wait, &calib_wait,
MVM_UCODE_CALIB_TIMEOUT);
if (!ret)
mvm->init_ucode_complete = true;
if (ret && iwl_mvm_is_radio_killed(mvm)) {
IWL_DEBUG_RF_KILL(mvm, "RFKILL while calibrating.\n");
ret = 1;
}
goto out;
error:
iwl_remove_notification(&mvm->notif_wait, &calib_wait);
out:
mvm->calibrating = false;
if (iwlmvm_mod_params.init_dbg && !mvm->nvm_data) {
/* we want to debug INIT and we have no NVM - fake */
mvm->nvm_data = kzalloc(sizeof(struct iwl_nvm_data) +
sizeof(struct ieee80211_channel) +
sizeof(struct ieee80211_rate),
GFP_KERNEL);
if (!mvm->nvm_data)
return -ENOMEM;
mvm->nvm_data->bands[0].channels = mvm->nvm_data->channels;
mvm->nvm_data->bands[0].n_channels = 1;
mvm->nvm_data->bands[0].n_bitrates = 1;
mvm->nvm_data->bands[0].bitrates =
(void *)mvm->nvm_data->channels + 1;
mvm->nvm_data->bands[0].bitrates->hw_value = 10;
}
return ret;
}
int iwl_mvm_up(struct iwl_mvm *mvm)
{
int ret, i;
struct ieee80211_channel *chan;
struct cfg80211_chan_def chandef;
lockdep_assert_held(&mvm->mutex);
ret = iwl_trans_start_hw(mvm->trans);
if (ret)
return ret;
/*
* If we haven't completed the run of the init ucode during
* module loading, load init ucode now
* (for example, if we were in RFKILL)
*/
if (!mvm->init_ucode_complete) {
ret = iwl_run_init_mvm_ucode(mvm, false);
if (ret && !iwlmvm_mod_params.init_dbg) {
IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret);
/* this can't happen */
if (WARN_ON(ret > 0))
ret = -ERFKILL;
goto error;
}
if (!iwlmvm_mod_params.init_dbg) {
/*
* should stop and start HW since that INIT
* image just loaded
*/
iwl_trans_stop_device(mvm->trans);
ret = iwl_trans_start_hw(mvm->trans);
if (ret)
return ret;
}
}
if (iwlmvm_mod_params.init_dbg)
return 0;
ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR);
if (ret) {
IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret);
goto error;
}
ret = iwl_mvm_sf_update(mvm, NULL, false);
if (ret)
IWL_ERR(mvm, "Failed to initialize Smart Fifo\n");
ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
if (ret)
goto error;
ret = iwl_send_bt_init_conf(mvm);
if (ret)
goto error;
/* Send phy db control command and then phy db calibration*/
ret = iwl_send_phy_db_data(mvm->phy_db);
if (ret)
goto error;
ret = iwl_send_phy_cfg_cmd(mvm);
if (ret)
goto error;
/* init the fw <-> mac80211 STA mapping */
for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
/* reset quota debouncing buffer - 0xff will yield invalid data */
memset(&mvm->last_quota_cmd, 0xff, sizeof(mvm->last_quota_cmd));
/* Add auxiliary station for scanning */
ret = iwl_mvm_add_aux_sta(mvm);
if (ret)
goto error;
/* Add all the PHY contexts */
chan = &mvm->hw->wiphy->bands[IEEE80211_BAND_2GHZ]->channels[0];
cfg80211_chandef_create(&chandef, chan, NL80211_CHAN_NO_HT);
for (i = 0; i < NUM_PHY_CTX; i++) {
/*
* The channel used here isn't relevant as it's
* going to be overwritten in the other flows.
* For now use the first channel we have.
*/
ret = iwl_mvm_phy_ctxt_add(mvm, &mvm->phy_ctxts[i],
&chandef, 1, 1);
if (ret)
goto error;
}
/* Initialize tx backoffs to the minimal possible */
iwl_mvm_tt_tx_backoff(mvm, 0);
if (mvm->trans->ltr_enabled) {
struct iwl_ltr_config_cmd cmd = {
.flags = cpu_to_le32(LTR_CFG_FLAG_FEATURE_ENABLE),
};
WARN_ON(iwl_mvm_send_cmd_pdu(mvm, LTR_CONFIG, 0,
sizeof(cmd), &cmd));
}
ret = iwl_mvm_power_update_device(mvm);
if (ret)
goto error;
/* allow FW/transport low power modes if not during restart */
if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
IWL_DEBUG_INFO(mvm, "RT uCode started.\n");
return 0;
error:
iwl_trans_stop_device(mvm->trans);
return ret;
}
int iwl_mvm_load_d3_fw(struct iwl_mvm *mvm)
{
int ret, i;
lockdep_assert_held(&mvm->mutex);
ret = iwl_trans_start_hw(mvm->trans);
if (ret)
return ret;
ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_WOWLAN);
if (ret) {
IWL_ERR(mvm, "Failed to start WoWLAN firmware: %d\n", ret);
goto error;
}
ret = iwl_send_tx_ant_cfg(mvm, mvm->fw->valid_tx_ant);
if (ret)
goto error;
/* Send phy db control command and then phy db calibration*/
ret = iwl_send_phy_db_data(mvm->phy_db);
if (ret)
goto error;
ret = iwl_send_phy_cfg_cmd(mvm);
if (ret)
goto error;
/* init the fw <-> mac80211 STA mapping */
for (i = 0; i < IWL_MVM_STATION_COUNT; i++)
RCU_INIT_POINTER(mvm->fw_id_to_mac_id[i], NULL);
/* Add auxiliary station for scanning */
ret = iwl_mvm_add_aux_sta(mvm);
if (ret)
goto error;
return 0;
error:
iwl_trans_stop_device(mvm->trans);
return ret;
}
int iwl_mvm_rx_card_state_notif(struct iwl_mvm *mvm,
struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_card_state_notif *card_state_notif = (void *)pkt->data;
u32 flags = le32_to_cpu(card_state_notif->flags);
IWL_DEBUG_RF_KILL(mvm, "Card state received: HW:%s SW:%s CT:%s\n",
(flags & HW_CARD_DISABLED) ? "Kill" : "On",
(flags & SW_CARD_DISABLED) ? "Kill" : "On",
(flags & CT_KILL_CARD_DISABLED) ?
"Reached" : "Not reached");
return 0;
}
int iwl_mvm_rx_radio_ver(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
struct iwl_device_cmd *cmd)
{
struct iwl_rx_packet *pkt = rxb_addr(rxb);
struct iwl_radio_version_notif *radio_version = (void *)pkt->data;
/* TODO: what to do with that? */
IWL_DEBUG_INFO(mvm,
"Radio version: flavor: 0x%08x, step 0x%08x, dash 0x%08x\n",
le32_to_cpu(radio_version->radio_flavor),
le32_to_cpu(radio_version->radio_step),
le32_to_cpu(radio_version->radio_dash));
return 0;
}