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tegrakernel/kernel/kernel-4.9/drivers/net/wireless/marvell/mwifiex/init.c

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/*
* Marvell Wireless LAN device driver: HW/FW Initialization
*
* Copyright (C) 2011-2014, Marvell International Ltd.
*
* This software file (the "File") is distributed by Marvell International
* Ltd. under the terms of the GNU General Public License Version 2, June 1991
* (the "License"). You may use, redistribute and/or modify this File in
* accordance with the terms and conditions of the License, a copy of which
* is available by writing to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
*
* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
* this warranty disclaimer.
*/
#include "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"
#include "11n.h"
/*
* This function adds a BSS priority table to the table list.
*
* The function allocates a new BSS priority table node and adds it to
* the end of BSS priority table list, kept in driver memory.
*/
static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv)
{
struct mwifiex_adapter *adapter = priv->adapter;
struct mwifiex_bss_prio_node *bss_prio;
struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl;
unsigned long flags;
bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL);
if (!bss_prio)
return -ENOMEM;
bss_prio->priv = priv;
INIT_LIST_HEAD(&bss_prio->list);
spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags);
list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head);
spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags);
return 0;
}
static void wakeup_timer_fn(unsigned long data)
{
struct mwifiex_adapter *adapter = (struct mwifiex_adapter *)data;
mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n");
adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
mwifiex_cancel_all_pending_cmd(adapter);
if (adapter->if_ops.card_reset && !adapter->hs_activated)
adapter->if_ops.card_reset(adapter);
}
/*
* This function initializes the private structure and sets default
* values to the members.
*
* Additionally, it also initializes all the locks and sets up all the
* lists.
*/
int mwifiex_init_priv(struct mwifiex_private *priv)
{
u32 i;
priv->media_connected = false;
eth_broadcast_addr(priv->curr_addr);
priv->port_open = false;
priv->usb_port = MWIFIEX_USB_EP_DATA;
priv->pkt_tx_ctrl = 0;
priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
priv->data_rate = 0; /* Initially indicate the rate as auto */
priv->is_data_rate_auto = true;
priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR;
priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR;
priv->sec_info.wep_enabled = 0;
priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
priv->sec_info.encryption_mode = 0;
for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++)
memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key));
priv->wep_key_curr_index = 0;
priv->curr_pkt_filter = HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON |
HostCmd_ACT_MAC_ETHERNETII_ENABLE;
priv->beacon_period = 100; /* beacon interval */
priv->attempted_bss_desc = NULL;
memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params));
priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL;
memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid));
memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid));
memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf));
priv->assoc_rsp_size = 0;
priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL;
priv->atim_window = 0;
priv->adhoc_state = ADHOC_IDLE;
priv->tx_power_level = 0;
priv->max_tx_power_level = 0;
priv->min_tx_power_level = 0;
priv->tx_ant = 0;
priv->rx_ant = 0;
priv->tx_rate = 0;
priv->rxpd_htinfo = 0;
priv->rxpd_rate = 0;
priv->rate_bitmap = 0;
priv->data_rssi_last = 0;
priv->data_rssi_avg = 0;
priv->data_nf_avg = 0;
priv->data_nf_last = 0;
priv->bcn_rssi_last = 0;
priv->bcn_rssi_avg = 0;
priv->bcn_nf_avg = 0;
priv->bcn_nf_last = 0;
memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie));
memset(&priv->aes_key, 0, sizeof(priv->aes_key));
priv->wpa_ie_len = 0;
priv->wpa_is_gtk_set = false;
memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf));
priv->assoc_tlv_buf_len = 0;
memset(&priv->wps, 0, sizeof(priv->wps));
memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf));
priv->gen_ie_buf_len = 0;
memset(priv->vs_ie, 0, sizeof(priv->vs_ie));
priv->wmm_required = true;
priv->wmm_enabled = false;
priv->wmm_qosinfo = 0;
priv->curr_bcn_buf = NULL;
priv->curr_bcn_size = 0;
priv->wps_ie = NULL;
priv->wps_ie_len = 0;
priv->ap_11n_enabled = 0;
memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg));
priv->scan_block = false;
priv->csa_chan = 0;
priv->csa_expire_time = 0;
priv->del_list_idx = 0;
priv->hs2_enabled = false;
priv->check_tdls_tx = false;
memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID);
mwifiex_init_11h_params(priv);
return mwifiex_add_bss_prio_tbl(priv);
}
/*
* This function allocates buffers for members of the adapter
* structure.
*
* The memory allocated includes scan table, command buffers, and
* sleep confirm command buffer. In addition, the queues are
* also initialized.
*/
static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter)
{
int ret;
/* Allocate command buffer */
ret = mwifiex_alloc_cmd_buffer(adapter);
if (ret) {
mwifiex_dbg(adapter, ERROR,
"%s: failed to alloc cmd buffer\n",
__func__);
return -1;
}
adapter->sleep_cfm =
dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm)
+ INTF_HEADER_LEN);
if (!adapter->sleep_cfm) {
mwifiex_dbg(adapter, ERROR,
"%s: failed to alloc sleep cfm\t"
" cmd buffer\n", __func__);
return -1;
}
skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN);
return 0;
}
/*
* This function initializes the adapter structure and sets default
* values to the members of adapter.
*
* This also initializes the WMM related parameters in the driver private
* structures.
*/
static void mwifiex_init_adapter(struct mwifiex_adapter *adapter)
{
struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL;
skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm));
adapter->cmd_sent = false;
if (adapter->iface_type == MWIFIEX_SDIO)
adapter->data_sent = true;
else
adapter->data_sent = false;
adapter->cmd_resp_received = false;
adapter->event_received = false;
adapter->data_received = false;
adapter->surprise_removed = false;
adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;
adapter->ps_state = PS_STATE_AWAKE;
adapter->need_to_wakeup = false;
adapter->scan_mode = HostCmd_BSS_MODE_ANY;
adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME;
adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME;
adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME;
adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME;
adapter->scan_probes = 1;
adapter->multiple_dtim = 1;
adapter->local_listen_interval = 0; /* default value in firmware
will be used */
adapter->is_deep_sleep = false;
adapter->delay_null_pkt = false;
adapter->delay_to_ps = 1000;
adapter->enhanced_ps_mode = PS_MODE_AUTO;
adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by
default */
adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by
default */
adapter->pm_wakeup_card_req = false;
adapter->pm_wakeup_fw_try = false;
adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K;
adapter->is_hs_configured = false;
adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF);
adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF;
adapter->hs_cfg.gap = HS_CFG_GAP_DEF;
adapter->hs_activated = false;
memset(adapter->event_body, 0, sizeof(adapter->event_body));
adapter->hw_dot_11n_dev_cap = 0;
adapter->hw_dev_mcs_support = 0;
adapter->sec_chan_offset = 0;
adapter->adhoc_11n_enabled = false;
mwifiex_wmm_init(adapter);
sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *)
adapter->sleep_cfm->data;
memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len);
sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH);
sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len);
sleep_cfm_buf->result = 0;
sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM);
sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED);
memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params));
memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period));
adapter->tx_lock_flag = false;
adapter->null_pkt_interval = 0;
adapter->fw_bands = 0;
adapter->config_bands = 0;
adapter->adhoc_start_band = 0;
adapter->scan_channels = NULL;
adapter->fw_release_number = 0;
adapter->fw_cap_info = 0;
memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf));
adapter->event_cause = 0;
adapter->region_code = 0;
adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT;
adapter->adhoc_awake_period = 0;
memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter));
adapter->arp_filter_size = 0;
adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX;
adapter->mfg_mode = mfg_mode;
adapter->key_api_major_ver = 0;
adapter->key_api_minor_ver = 0;
eth_broadcast_addr(adapter->perm_addr);
adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM;
adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM;
adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM;
adapter->active_scan_triggered = false;
setup_timer(&adapter->wakeup_timer, wakeup_timer_fn,
(unsigned long)adapter);
}
/*
* This function sets trans_start per tx_queue
*/
void mwifiex_set_trans_start(struct net_device *dev)
{
int i;
for (i = 0; i < dev->num_tx_queues; i++)
netdev_get_tx_queue(dev, i)->trans_start = jiffies;
netif_trans_update(dev);
}
/*
* This function wakes up all queues in net_device
*/
void mwifiex_wake_up_net_dev_queue(struct net_device *netdev,
struct mwifiex_adapter *adapter)
{
unsigned long dev_queue_flags;
unsigned int i;
spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
for (i = 0; i < netdev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
if (netif_tx_queue_stopped(txq))
netif_tx_wake_queue(txq);
}
spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
}
/*
* This function stops all queues in net_device
*/
void mwifiex_stop_net_dev_queue(struct net_device *netdev,
struct mwifiex_adapter *adapter)
{
unsigned long dev_queue_flags;
unsigned int i;
spin_lock_irqsave(&adapter->queue_lock, dev_queue_flags);
for (i = 0; i < netdev->num_tx_queues; i++) {
struct netdev_queue *txq = netdev_get_tx_queue(netdev, i);
if (!netif_tx_queue_stopped(txq))
netif_tx_stop_queue(txq);
}
spin_unlock_irqrestore(&adapter->queue_lock, dev_queue_flags);
}
/*
* This function releases the lock variables and frees the locks and
* associated locks.
*/
static void mwifiex_free_lock_list(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv;
s32 i, j;
/* Free lists */
list_del(&adapter->cmd_free_q);
list_del(&adapter->cmd_pending_q);
list_del(&adapter->scan_pending_q);
for (i = 0; i < adapter->priv_num; i++)
list_del(&adapter->bss_prio_tbl[i].bss_prio_head);
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
priv = adapter->priv[i];
for (j = 0; j < MAX_NUM_TID; ++j)
list_del(&priv->wmm.tid_tbl_ptr[j].ra_list);
list_del(&priv->tx_ba_stream_tbl_ptr);
list_del(&priv->rx_reorder_tbl_ptr);
list_del(&priv->sta_list);
list_del(&priv->auto_tdls_list);
}
}
}
/*
* This function performs cleanup for adapter structure.
*
* The cleanup is done recursively, by canceling all pending
* commands, freeing the member buffers previously allocated
* (command buffers, scan table buffer, sleep confirm command
* buffer), stopping the timers and calling the cleanup routines
* for every interface.
*/
static void
mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter)
{
int idx;
if (!adapter) {
pr_err("%s: adapter is NULL\n", __func__);
return;
}
del_timer(&adapter->wakeup_timer);
mwifiex_cancel_all_pending_cmd(adapter);
wake_up_interruptible(&adapter->cmd_wait_q.wait);
wake_up_interruptible(&adapter->hs_activate_wait_q);
/* Free lock variables */
mwifiex_free_lock_list(adapter);
/* Free command buffer */
mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n");
mwifiex_free_cmd_buffer(adapter);
for (idx = 0; idx < adapter->num_mem_types; idx++) {
struct memory_type_mapping *entry =
&adapter->mem_type_mapping_tbl[idx];
if (entry->mem_ptr) {
vfree(entry->mem_ptr);
entry->mem_ptr = NULL;
}
entry->mem_size = 0;
}
if (adapter->drv_info_dump) {
vfree(adapter->drv_info_dump);
adapter->drv_info_dump = NULL;
adapter->drv_info_size = 0;
}
if (adapter->sleep_cfm)
dev_kfree_skb_any(adapter->sleep_cfm);
}
/*
* This function intializes the lock variables and
* the list heads.
*/
int mwifiex_init_lock_list(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv;
s32 i, j;
spin_lock_init(&adapter->mwifiex_lock);
spin_lock_init(&adapter->int_lock);
spin_lock_init(&adapter->main_proc_lock);
spin_lock_init(&adapter->mwifiex_cmd_lock);
spin_lock_init(&adapter->queue_lock);
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
priv = adapter->priv[i];
spin_lock_init(&priv->rx_pkt_lock);
spin_lock_init(&priv->wmm.ra_list_spinlock);
spin_lock_init(&priv->curr_bcn_buf_lock);
spin_lock_init(&priv->sta_list_spinlock);
spin_lock_init(&priv->auto_tdls_lock);
}
}
/* Initialize cmd_free_q */
INIT_LIST_HEAD(&adapter->cmd_free_q);
/* Initialize cmd_pending_q */
INIT_LIST_HEAD(&adapter->cmd_pending_q);
/* Initialize scan_pending_q */
INIT_LIST_HEAD(&adapter->scan_pending_q);
spin_lock_init(&adapter->cmd_free_q_lock);
spin_lock_init(&adapter->cmd_pending_q_lock);
spin_lock_init(&adapter->scan_pending_q_lock);
spin_lock_init(&adapter->rx_proc_lock);
skb_queue_head_init(&adapter->rx_data_q);
skb_queue_head_init(&adapter->tx_data_q);
for (i = 0; i < adapter->priv_num; ++i) {
INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head);
spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock);
}
for (i = 0; i < adapter->priv_num; i++) {
if (!adapter->priv[i])
continue;
priv = adapter->priv[i];
for (j = 0; j < MAX_NUM_TID; ++j)
INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list);
INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr);
INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr);
INIT_LIST_HEAD(&priv->sta_list);
INIT_LIST_HEAD(&priv->auto_tdls_list);
skb_queue_head_init(&priv->tdls_txq);
skb_queue_head_init(&priv->bypass_txq);
spin_lock_init(&priv->tx_ba_stream_tbl_lock);
spin_lock_init(&priv->rx_reorder_tbl_lock);
spin_lock_init(&priv->ack_status_lock);
idr_init(&priv->ack_status_frames);
}
return 0;
}
/*
* This function initializes the firmware.
*
* The following operations are performed sequentially -
* - Allocate adapter structure
* - Initialize the adapter structure
* - Initialize the private structure
* - Add BSS priority tables to the adapter structure
* - For each interface, send the init commands to firmware
* - Send the first command in command pending queue, if available
*/
int mwifiex_init_fw(struct mwifiex_adapter *adapter)
{
int ret;
struct mwifiex_private *priv;
u8 i, first_sta = true;
int is_cmd_pend_q_empty;
unsigned long flags;
adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
/* Allocate memory for member of adapter structure */
ret = mwifiex_allocate_adapter(adapter);
if (ret)
return -1;
/* Initialize adapter structure */
mwifiex_init_adapter(adapter);
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
priv = adapter->priv[i];
/* Initialize private structure */
ret = mwifiex_init_priv(priv);
if (ret)
return -1;
}
}
if (adapter->mfg_mode) {
adapter->hw_status = MWIFIEX_HW_STATUS_READY;
ret = -EINPROGRESS;
} else {
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
ret = mwifiex_sta_init_cmd(adapter->priv[i],
first_sta, true);
if (ret == -1)
return -1;
first_sta = false;
}
}
}
spin_lock_irqsave(&adapter->cmd_pending_q_lock, flags);
is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
spin_unlock_irqrestore(&adapter->cmd_pending_q_lock, flags);
if (!is_cmd_pend_q_empty) {
/* Send the first command in queue and return */
if (mwifiex_main_process(adapter) != -1)
ret = -EINPROGRESS;
} else {
adapter->hw_status = MWIFIEX_HW_STATUS_READY;
}
return ret;
}
/*
* This function deletes the BSS priority tables.
*
* The function traverses through all the allocated BSS priority nodes
* in every BSS priority table and frees them.
*/
static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv)
{
int i;
struct mwifiex_adapter *adapter = priv->adapter;
struct mwifiex_bss_prio_node *bssprio_node, *tmp_node;
struct list_head *head;
spinlock_t *lock; /* bss priority lock */
unsigned long flags;
for (i = 0; i < adapter->priv_num; ++i) {
head = &adapter->bss_prio_tbl[i].bss_prio_head;
lock = &adapter->bss_prio_tbl[i].bss_prio_lock;
mwifiex_dbg(adapter, INFO,
"info: delete BSS priority table,\t"
"bss_type = %d, bss_num = %d, i = %d,\t"
"head = %p\n",
priv->bss_type, priv->bss_num, i, head);
{
spin_lock_irqsave(lock, flags);
if (list_empty(head)) {
spin_unlock_irqrestore(lock, flags);
continue;
}
list_for_each_entry_safe(bssprio_node, tmp_node, head,
list) {
if (bssprio_node->priv == priv) {
mwifiex_dbg(adapter, INFO,
"info: Delete\t"
"node %p, next = %p\n",
bssprio_node, tmp_node);
list_del(&bssprio_node->list);
kfree(bssprio_node);
}
}
spin_unlock_irqrestore(lock, flags);
}
}
}
/*
* This function frees the private structure, including cleans
* up the TX and RX queues and frees the BSS priority tables.
*/
void mwifiex_free_priv(struct mwifiex_private *priv)
{
mwifiex_clean_txrx(priv);
mwifiex_delete_bss_prio_tbl(priv);
mwifiex_free_curr_bcn(priv);
}
/*
* This function is used to shutdown the driver.
*
* The following operations are performed sequentially -
* - Check if already shut down
* - Make sure the main process has stopped
* - Clean up the Tx and Rx queues
* - Delete BSS priority tables
* - Free the adapter
* - Notify completion
*/
int
mwifiex_shutdown_drv(struct mwifiex_adapter *adapter)
{
int ret = -EINPROGRESS;
struct mwifiex_private *priv;
s32 i;
unsigned long flags;
struct sk_buff *skb;
/* mwifiex already shutdown */
if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
return 0;
adapter->hw_status = MWIFIEX_HW_STATUS_CLOSING;
/* wait for mwifiex_process to complete */
if (adapter->mwifiex_processing) {
mwifiex_dbg(adapter, WARN,
"main process is still running\n");
return ret;
}
/* cancel current command */
if (adapter->curr_cmd) {
mwifiex_dbg(adapter, WARN,
"curr_cmd is still in processing\n");
del_timer_sync(&adapter->cmd_timer);
mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd);
adapter->curr_cmd = NULL;
}
/* shut down mwifiex */
mwifiex_dbg(adapter, MSG,
"info: shutdown mwifiex...\n");
/* Clean up Tx/Rx queues and delete BSS priority table */
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
priv = adapter->priv[i];
mwifiex_clean_auto_tdls(priv);
mwifiex_abort_cac(priv);
mwifiex_clean_txrx(priv);
mwifiex_delete_bss_prio_tbl(priv);
}
}
atomic_set(&adapter->tx_queued, 0);
while ((skb = skb_dequeue(&adapter->tx_data_q)))
mwifiex_write_data_complete(adapter, skb, 0, 0);
spin_lock_irqsave(&adapter->rx_proc_lock, flags);
while ((skb = skb_dequeue(&adapter->rx_data_q))) {
struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb);
atomic_dec(&adapter->rx_pending);
priv = adapter->priv[rx_info->bss_num];
if (priv)
priv->stats.rx_dropped++;
dev_kfree_skb_any(skb);
}
spin_unlock_irqrestore(&adapter->rx_proc_lock, flags);
spin_lock(&adapter->mwifiex_lock);
mwifiex_adapter_cleanup(adapter);
spin_unlock(&adapter->mwifiex_lock);
/* Notify completion */
ret = mwifiex_shutdown_fw_complete(adapter);
return ret;
}
/*
* This function downloads the firmware to the card.
*
* The actual download is preceded by two sanity checks -
* - Check if firmware is already running
* - Check if the interface is the winner to download the firmware
*
* ...and followed by another -
* - Check if the firmware is downloaded successfully
*
* After download is successfully completed, the host interrupts are enabled.
*/
int mwifiex_dnld_fw(struct mwifiex_adapter *adapter,
struct mwifiex_fw_image *pmfw)
{
int ret;
u32 poll_num = 1;
if (adapter->if_ops.check_fw_status) {
/* check if firmware is already running */
ret = adapter->if_ops.check_fw_status(adapter, poll_num);
if (!ret) {
mwifiex_dbg(adapter, MSG,
"WLAN FW already running! Skip FW dnld\n");
return 0;
}
}
/* check if we are the winner for downloading FW */
if (adapter->if_ops.check_winner_status) {
adapter->winner = 0;
ret = adapter->if_ops.check_winner_status(adapter);
poll_num = MAX_FIRMWARE_POLL_TRIES;
if (ret) {
mwifiex_dbg(adapter, MSG,
"WLAN read winner status failed!\n");
return ret;
}
if (!adapter->winner) {
mwifiex_dbg(adapter, MSG,
"WLAN is not the winner! Skip FW dnld\n");
goto poll_fw;
}
}
if (pmfw) {
/* Download firmware with helper */
ret = adapter->if_ops.prog_fw(adapter, pmfw);
if (ret) {
mwifiex_dbg(adapter, ERROR,
"prog_fw failed ret=%#x\n", ret);
return ret;
}
}
poll_fw:
/* Check if the firmware is downloaded successfully or not */
ret = adapter->if_ops.check_fw_status(adapter, poll_num);
if (ret)
mwifiex_dbg(adapter, ERROR,
"FW failed to be active in time\n");
return ret;
}
EXPORT_SYMBOL_GPL(mwifiex_dnld_fw);
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