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linux-zen-desktop/drivers/net/wireless/marvell/mwifiex/main.c

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50 KiB
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Initial commit
2023-08-30 17:31:07 +02:00
// SPDX-License-Identifier: GPL-2.0-only
/*
* NXP Wireless LAN device driver: major functions
*
* Copyright 2011-2020 NXP
*/
#include <linux/suspend.h>
#include "main.h"
#include "wmm.h"
#include "cfg80211.h"
#include "11n.h"
#define VERSION "1.0"
#define MFG_FIRMWARE "mwifiex_mfg.bin"
static unsigned int debug_mask = MWIFIEX_DEFAULT_DEBUG_MASK;
module_param(debug_mask, uint, 0);
MODULE_PARM_DESC(debug_mask, "bitmap for debug flags");
const char driver_version[] = "mwifiex " VERSION " (%s) ";
static char *cal_data_cfg;
module_param(cal_data_cfg, charp, 0);
static unsigned short driver_mode;
module_param(driver_mode, ushort, 0);
MODULE_PARM_DESC(driver_mode,
"station=0x1(default), ap-sta=0x3, station-p2p=0x5, ap-sta-p2p=0x7");
bool mfg_mode;
module_param(mfg_mode, bool, 0);
MODULE_PARM_DESC(mfg_mode, "manufacturing mode enable:1, disable:0");
bool aggr_ctrl;
module_param(aggr_ctrl, bool, 0000);
MODULE_PARM_DESC(aggr_ctrl, "usb tx aggregation enable:1, disable:0");
const u16 mwifiex_1d_to_wmm_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
/*
* This function registers the device and performs all the necessary
* initializations.
*
* The following initialization operations are performed -
* - Allocate adapter structure
* - Save interface specific operations table in adapter
* - Call interface specific initialization routine
* - Allocate private structures
* - Set default adapter structure parameters
* - Initialize locks
*
* In case of any errors during inittialization, this function also ensures
* proper cleanup before exiting.
*/
static int mwifiex_register(void *card, struct device *dev,
struct mwifiex_if_ops *if_ops, void **padapter)
{
struct mwifiex_adapter *adapter;
int i;
adapter = kzalloc(sizeof(struct mwifiex_adapter), GFP_KERNEL);
if (!adapter)
return -ENOMEM;
*padapter = adapter;
adapter->dev = dev;
adapter->card = card;
/* Save interface specific operations in adapter */
memmove(&adapter->if_ops, if_ops, sizeof(struct mwifiex_if_ops));
adapter->debug_mask = debug_mask;
/* card specific initialization has been deferred until now .. */
if (adapter->if_ops.init_if)
if (adapter->if_ops.init_if(adapter))
goto error;
adapter->priv_num = 0;
for (i = 0; i < MWIFIEX_MAX_BSS_NUM; i++) {
/* Allocate memory for private structure */
adapter->priv[i] =
kzalloc(sizeof(struct mwifiex_private), GFP_KERNEL);
if (!adapter->priv[i])
goto error;
adapter->priv[i]->adapter = adapter;
adapter->priv_num++;
}
mwifiex_init_lock_list(adapter);
timer_setup(&adapter->cmd_timer, mwifiex_cmd_timeout_func, 0);
return 0;
error:
mwifiex_dbg(adapter, ERROR,
"info: leave mwifiex_register with error\n");
for (i = 0; i < adapter->priv_num; i++)
kfree(adapter->priv[i]);
kfree(adapter);
return -1;
}
/*
* This function unregisters the device and performs all the necessary
* cleanups.
*
* The following cleanup operations are performed -
* - Free the timers
* - Free beacon buffers
* - Free private structures
* - Free adapter structure
*/
static int mwifiex_unregister(struct mwifiex_adapter *adapter)
{
s32 i;
if (adapter->if_ops.cleanup_if)
adapter->if_ops.cleanup_if(adapter);
timer_shutdown_sync(&adapter->cmd_timer);
/* Free private structures */
for (i = 0; i < adapter->priv_num; i++) {
if (adapter->priv[i]) {
mwifiex_free_curr_bcn(adapter->priv[i]);
kfree(adapter->priv[i]);
}
}
if (adapter->nd_info) {
for (i = 0 ; i < adapter->nd_info->n_matches ; i++)
kfree(adapter->nd_info->matches[i]);
kfree(adapter->nd_info);
adapter->nd_info = NULL;
}
kfree(adapter->regd);
kfree(adapter);
return 0;
}
void mwifiex_queue_main_work(struct mwifiex_adapter *adapter)
{
unsigned long flags;
spin_lock_irqsave(&adapter->main_proc_lock, flags);
if (adapter->mwifiex_processing) {
adapter->more_task_flag = true;
spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
} else {
spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
queue_work(adapter->workqueue, &adapter->main_work);
}
}
EXPORT_SYMBOL_GPL(mwifiex_queue_main_work);
static void mwifiex_queue_rx_work(struct mwifiex_adapter *adapter)
{
spin_lock_bh(&adapter->rx_proc_lock);
if (adapter->rx_processing) {
spin_unlock_bh(&adapter->rx_proc_lock);
} else {
spin_unlock_bh(&adapter->rx_proc_lock);
queue_work(adapter->rx_workqueue, &adapter->rx_work);
}
}
static int mwifiex_process_rx(struct mwifiex_adapter *adapter)
{
struct sk_buff *skb;
struct mwifiex_rxinfo *rx_info;
spin_lock_bh(&adapter->rx_proc_lock);
if (adapter->rx_processing || adapter->rx_locked) {
spin_unlock_bh(&adapter->rx_proc_lock);
goto exit_rx_proc;
} else {
adapter->rx_processing = true;
spin_unlock_bh(&adapter->rx_proc_lock);
}
/* Check for Rx data */
while ((skb = skb_dequeue(&adapter->rx_data_q))) {
atomic_dec(&adapter->rx_pending);
if ((adapter->delay_main_work ||
adapter->iface_type == MWIFIEX_USB) &&
(atomic_read(&adapter->rx_pending) < LOW_RX_PENDING)) {
if (adapter->if_ops.submit_rem_rx_urbs)
adapter->if_ops.submit_rem_rx_urbs(adapter);
adapter->delay_main_work = false;
mwifiex_queue_main_work(adapter);
}
rx_info = MWIFIEX_SKB_RXCB(skb);
if (rx_info->buf_type == MWIFIEX_TYPE_AGGR_DATA) {
if (adapter->if_ops.deaggr_pkt)
adapter->if_ops.deaggr_pkt(adapter, skb);
dev_kfree_skb_any(skb);
} else {
mwifiex_handle_rx_packet(adapter, skb);
}
}
spin_lock_bh(&adapter->rx_proc_lock);
adapter->rx_processing = false;
spin_unlock_bh(&adapter->rx_proc_lock);
exit_rx_proc:
return 0;
}
static void maybe_quirk_fw_disable_ds(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA);
struct mwifiex_ver_ext ver_ext;
if (test_and_set_bit(MWIFIEX_IS_REQUESTING_FW_VEREXT, &adapter->work_flags))
return;
memset(&ver_ext, 0, sizeof(ver_ext));
ver_ext.version_str_sel = 1;
if (mwifiex_send_cmd(priv, HostCmd_CMD_VERSION_EXT,
HostCmd_ACT_GEN_GET, 0, &ver_ext, false)) {
mwifiex_dbg(priv->adapter, MSG,
"Checking hardware revision failed.\n");
}
}
/*
* The main process.
*
* This function is the main procedure of the driver and handles various driver
* operations. It runs in a loop and provides the core functionalities.
*
* The main responsibilities of this function are -
* - Ensure concurrency control
* - Handle pending interrupts and call interrupt handlers
* - Wake up the card if required
* - Handle command responses and call response handlers
* - Handle events and call event handlers
* - Execute pending commands
* - Transmit pending data packets
*/
int mwifiex_main_process(struct mwifiex_adapter *adapter)
{
int ret = 0;
unsigned long flags;
spin_lock_irqsave(&adapter->main_proc_lock, flags);
/* Check if already processing */
if (adapter->mwifiex_processing || adapter->main_locked) {
adapter->more_task_flag = true;
spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
return 0;
} else {
adapter->mwifiex_processing = true;
spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
}
process_start:
do {
if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY)
break;
/* For non-USB interfaces, If we process interrupts first, it
* would increase RX pending even further. Avoid this by
* checking if rx_pending has crossed high threshold and
* schedule rx work queue and then process interrupts.
* For USB interface, there are no interrupts. We already have
* HIGH_RX_PENDING check in usb.c
*/
if (atomic_read(&adapter->rx_pending) >= HIGH_RX_PENDING &&
adapter->iface_type != MWIFIEX_USB) {
adapter->delay_main_work = true;
mwifiex_queue_rx_work(adapter);
break;
}
/* Handle pending interrupt if any */
if (adapter->int_status) {
if (adapter->hs_activated)
mwifiex_process_hs_config(adapter);
if (adapter->if_ops.process_int_status)
adapter->if_ops.process_int_status(adapter);
}
if (adapter->rx_work_enabled && adapter->data_received)
mwifiex_queue_rx_work(adapter);
/* Need to wake up the card ? */
if ((adapter->ps_state == PS_STATE_SLEEP) &&
(adapter->pm_wakeup_card_req &&
!adapter->pm_wakeup_fw_try) &&
(is_command_pending(adapter) ||
!skb_queue_empty(&adapter->tx_data_q) ||
!mwifiex_bypass_txlist_empty(adapter) ||
!mwifiex_wmm_lists_empty(adapter))) {
adapter->pm_wakeup_fw_try = true;
mod_timer(&adapter->wakeup_timer, jiffies + (HZ*3));
adapter->if_ops.wakeup(adapter);
continue;
}
if (IS_CARD_RX_RCVD(adapter)) {
adapter->data_received = false;
adapter->pm_wakeup_fw_try = false;
del_timer(&adapter->wakeup_timer);
if (adapter->ps_state == PS_STATE_SLEEP)
adapter->ps_state = PS_STATE_AWAKE;
} else {
/* We have tried to wakeup the card already */
if (adapter->pm_wakeup_fw_try)
break;
if (adapter->ps_state == PS_STATE_PRE_SLEEP)
mwifiex_check_ps_cond(adapter);
if (adapter->ps_state != PS_STATE_AWAKE)
break;
if (adapter->tx_lock_flag) {
if (adapter->iface_type == MWIFIEX_USB) {
if (!adapter->usb_mc_setup)
break;
} else
break;
}
if ((!adapter->scan_chan_gap_enabled &&
adapter->scan_processing) || adapter->data_sent ||
mwifiex_is_tdls_chan_switching
(mwifiex_get_priv(adapter,
MWIFIEX_BSS_ROLE_STA)) ||
(mwifiex_wmm_lists_empty(adapter) &&
mwifiex_bypass_txlist_empty(adapter) &&
skb_queue_empty(&adapter->tx_data_q))) {
if (adapter->cmd_sent || adapter->curr_cmd ||
!mwifiex_is_send_cmd_allowed
(mwifiex_get_priv(adapter,
MWIFIEX_BSS_ROLE_STA)) ||
(!is_command_pending(adapter)))
break;
}
}
/* Check for event */
if (adapter->event_received) {
adapter->event_received = false;
mwifiex_process_event(adapter);
}
/* Check for Cmd Resp */
if (adapter->cmd_resp_received) {
adapter->cmd_resp_received = false;
mwifiex_process_cmdresp(adapter);
/* call mwifiex back when init_fw is done */
if (adapter->hw_status == MWIFIEX_HW_STATUS_INIT_DONE) {
adapter->hw_status = MWIFIEX_HW_STATUS_READY;
mwifiex_init_fw_complete(adapter);
maybe_quirk_fw_disable_ds(adapter);
}
}
/* Check if we need to confirm Sleep Request
received previously */
if (adapter->ps_state == PS_STATE_PRE_SLEEP)
mwifiex_check_ps_cond(adapter);
/* * The ps_state may have been changed during processing of
* Sleep Request event.
*/
if ((adapter->ps_state == PS_STATE_SLEEP) ||
(adapter->ps_state == PS_STATE_PRE_SLEEP) ||
(adapter->ps_state == PS_STATE_SLEEP_CFM)) {
continue;
}
if (adapter->tx_lock_flag) {
if (adapter->iface_type == MWIFIEX_USB) {
if (!adapter->usb_mc_setup)
continue;
} else
continue;
}
if (!adapter->cmd_sent && !adapter->curr_cmd &&
mwifiex_is_send_cmd_allowed
(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
if (mwifiex_exec_next_cmd(adapter) == -1) {
ret = -1;
break;
}
}
/** If USB Multi channel setup ongoing,
* wait for ready to tx data.
*/
if (adapter->iface_type == MWIFIEX_USB &&
adapter->usb_mc_setup)
continue;
if ((adapter->scan_chan_gap_enabled ||
!adapter->scan_processing) &&
!adapter->data_sent &&
!skb_queue_empty(&adapter->tx_data_q)) {
if (adapter->hs_activated_manually) {
mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
MWIFIEX_ASYNC_CMD);
adapter->hs_activated_manually = false;
}
mwifiex_process_tx_queue(adapter);
if (adapter->hs_activated) {
clear_bit(MWIFIEX_IS_HS_CONFIGURED,
&adapter->work_flags);
mwifiex_hs_activated_event
(mwifiex_get_priv
(adapter, MWIFIEX_BSS_ROLE_ANY),
false);
}
}
if ((adapter->scan_chan_gap_enabled ||
!adapter->scan_processing) &&
!adapter->data_sent &&
!mwifiex_bypass_txlist_empty(adapter) &&
!mwifiex_is_tdls_chan_switching
(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
if (adapter->hs_activated_manually) {
mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
MWIFIEX_ASYNC_CMD);
adapter->hs_activated_manually = false;
}
mwifiex_process_bypass_tx(adapter);
if (adapter->hs_activated) {
clear_bit(MWIFIEX_IS_HS_CONFIGURED,
&adapter->work_flags);
mwifiex_hs_activated_event
(mwifiex_get_priv
(adapter, MWIFIEX_BSS_ROLE_ANY),
false);
}
}
if ((adapter->scan_chan_gap_enabled ||
!adapter->scan_processing) &&
!adapter->data_sent && !mwifiex_wmm_lists_empty(adapter) &&
!mwifiex_is_tdls_chan_switching
(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA))) {
if (adapter->hs_activated_manually) {
mwifiex_cancel_hs(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY),
MWIFIEX_ASYNC_CMD);
adapter->hs_activated_manually = false;
}
mwifiex_wmm_process_tx(adapter);
if (adapter->hs_activated) {
clear_bit(MWIFIEX_IS_HS_CONFIGURED,
&adapter->work_flags);
mwifiex_hs_activated_event
(mwifiex_get_priv
(adapter, MWIFIEX_BSS_ROLE_ANY),
false);
}
}
if (adapter->delay_null_pkt && !adapter->cmd_sent &&
!adapter->curr_cmd && !is_command_pending(adapter) &&
(mwifiex_wmm_lists_empty(adapter) &&
mwifiex_bypass_txlist_empty(adapter) &&
skb_queue_empty(&adapter->tx_data_q))) {
if (!mwifiex_send_null_packet
(mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_STA),
MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET)) {
adapter->delay_null_pkt = false;
adapter->ps_state = PS_STATE_SLEEP;
}
break;
}
} while (true);
spin_lock_irqsave(&adapter->main_proc_lock, flags);
if (adapter->more_task_flag) {
adapter->more_task_flag = false;
spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
goto process_start;
}
adapter->mwifiex_processing = false;
spin_unlock_irqrestore(&adapter->main_proc_lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(mwifiex_main_process);
/*
* This function frees the adapter structure.
*
* Additionally, this closes the netlink socket, frees the timers
* and private structures.
*/
static void mwifiex_free_adapter(struct mwifiex_adapter *adapter)
{
if (!adapter) {
pr_err("%s: adapter is NULL\n", __func__);
return;
}
mwifiex_unregister(adapter);
pr_debug("info: %s: free adapter\n", __func__);
}
/*
* This function cancels all works in the queue and destroys
* the main workqueue.
*/
static void mwifiex_terminate_workqueue(struct mwifiex_adapter *adapter)
{
if (adapter->workqueue) {
destroy_workqueue(adapter->workqueue);
adapter->workqueue = NULL;
}
if (adapter->rx_workqueue) {
destroy_workqueue(adapter->rx_workqueue);
adapter->rx_workqueue = NULL;
}
}
/*
* This function gets firmware and initializes it.
*
* The main initialization steps followed are -
* - Download the correct firmware to card
* - Issue the init commands to firmware
*/
static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
{
int ret;
char fmt[64];
struct mwifiex_adapter *adapter = context;
struct mwifiex_fw_image fw;
bool init_failed = false;
struct wireless_dev *wdev;
struct completion *fw_done = adapter->fw_done;
if (!firmware) {
mwifiex_dbg(adapter, ERROR,
"Failed to get firmware %s\n", adapter->fw_name);
goto err_dnld_fw;
}
memset(&fw, 0, sizeof(struct mwifiex_fw_image));
adapter->firmware = firmware;
fw.fw_buf = (u8 *) adapter->firmware->data;
fw.fw_len = adapter->firmware->size;
if (adapter->if_ops.dnld_fw) {
ret = adapter->if_ops.dnld_fw(adapter, &fw);
} else {
ret = mwifiex_dnld_fw(adapter, &fw);
}
if (ret == -1)
goto err_dnld_fw;
mwifiex_dbg(adapter, MSG, "WLAN FW is active\n");
if (cal_data_cfg) {
if ((request_firmware(&adapter->cal_data, cal_data_cfg,
adapter->dev)) < 0)
mwifiex_dbg(adapter, ERROR,
"Cal data request_firmware() failed\n");
}
/* enable host interrupt after fw dnld is successful */
if (adapter->if_ops.enable_int) {
if (adapter->if_ops.enable_int(adapter))
goto err_dnld_fw;
}
adapter->init_wait_q_woken = false;
ret = mwifiex_init_fw(adapter);
if (ret == -1) {
goto err_init_fw;
} else if (!ret) {
adapter->hw_status = MWIFIEX_HW_STATUS_READY;
goto done;
}
/* Wait for mwifiex_init to complete */
if (!adapter->mfg_mode) {
wait_event_interruptible(adapter->init_wait_q,
adapter->init_wait_q_woken);
if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
goto err_init_fw;
}
if (!adapter->wiphy) {
if (mwifiex_register_cfg80211(adapter)) {
mwifiex_dbg(adapter, ERROR,
"cannot register with cfg80211\n");
goto err_init_fw;
}
}
if (mwifiex_init_channel_scan_gap(adapter)) {
mwifiex_dbg(adapter, ERROR,
"could not init channel stats table\n");
goto err_init_chan_scan;
}
if (driver_mode) {
driver_mode &= MWIFIEX_DRIVER_MODE_BITMASK;
driver_mode |= MWIFIEX_DRIVER_MODE_STA;
}
rtnl_lock();
wiphy_lock(adapter->wiphy);
/* Create station interface by default */
wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
NL80211_IFTYPE_STATION, NULL);
if (IS_ERR(wdev)) {
mwifiex_dbg(adapter, ERROR,
"cannot create default STA interface\n");
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
goto err_add_intf;
}
if (driver_mode & MWIFIEX_DRIVER_MODE_UAP) {
wdev = mwifiex_add_virtual_intf(adapter->wiphy, "uap%d", NET_NAME_ENUM,
NL80211_IFTYPE_AP, NULL);
if (IS_ERR(wdev)) {
mwifiex_dbg(adapter, ERROR,
"cannot create AP interface\n");
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
goto err_add_intf;
}
}
if (driver_mode & MWIFIEX_DRIVER_MODE_P2P) {
wdev = mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d", NET_NAME_ENUM,
NL80211_IFTYPE_P2P_CLIENT, NULL);
if (IS_ERR(wdev)) {
mwifiex_dbg(adapter, ERROR,
"cannot create p2p client interface\n");
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
goto err_add_intf;
}
}
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
mwifiex_dbg(adapter, MSG, "driver_version = %s\n", fmt);
adapter->is_up = true;
goto done;
err_add_intf:
vfree(adapter->chan_stats);
err_init_chan_scan:
wiphy_unregister(adapter->wiphy);
wiphy_free(adapter->wiphy);
err_init_fw:
if (adapter->if_ops.disable_int)
adapter->if_ops.disable_int(adapter);
err_dnld_fw:
mwifiex_dbg(adapter, ERROR,
"info: %s: unregister device\n", __func__);
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
mwifiex_terminate_workqueue(adapter);
if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
pr_debug("info: %s: shutdown mwifiex\n", __func__);
mwifiex_shutdown_drv(adapter);
mwifiex_free_cmd_buffers(adapter);
}
init_failed = true;
done:
if (adapter->cal_data) {
release_firmware(adapter->cal_data);
adapter->cal_data = NULL;
}
if (adapter->firmware) {
release_firmware(adapter->firmware);
adapter->firmware = NULL;
}
if (init_failed) {
if (adapter->irq_wakeup >= 0)
device_init_wakeup(adapter->dev, false);
mwifiex_free_adapter(adapter);
}
/* Tell all current and future waiters we're finished */
complete_all(fw_done);
return init_failed ? -EIO : 0;
}
static void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
{
_mwifiex_fw_dpc(firmware, context);
}
/*
* This function gets the firmware and (if called asynchronously) kicks off the
* HW init when done.
*/
static int mwifiex_init_hw_fw(struct mwifiex_adapter *adapter,
bool req_fw_nowait)
{
int ret;
/* Override default firmware with manufacturing one if
* manufacturing mode is enabled
*/
if (mfg_mode) {
if (strlcpy(adapter->fw_name, MFG_FIRMWARE,
sizeof(adapter->fw_name)) >=
sizeof(adapter->fw_name)) {
pr_err("%s: fw_name too long!\n", __func__);
return -1;
}
}
if (req_fw_nowait) {
ret = request_firmware_nowait(THIS_MODULE, 1, adapter->fw_name,
adapter->dev, GFP_KERNEL, adapter,
mwifiex_fw_dpc);
} else {
ret = request_firmware(&adapter->firmware,
adapter->fw_name,
adapter->dev);
}
if (ret < 0)
mwifiex_dbg(adapter, ERROR, "request_firmware%s error %d\n",
req_fw_nowait ? "_nowait" : "", ret);
return ret;
}
/*
* CFG802.11 network device handler for open.
*
* Starts the data queue.
*/
static int
mwifiex_open(struct net_device *dev)
{
netif_carrier_off(dev);
return 0;
}
/*
* CFG802.11 network device handler for close.
*/
static int
mwifiex_close(struct net_device *dev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
if (priv->scan_request) {
struct cfg80211_scan_info info = {
.aborted = true,
};
mwifiex_dbg(priv->adapter, INFO,
"aborting scan on ndo_stop\n");
cfg80211_scan_done(priv->scan_request, &info);
priv->scan_request = NULL;
priv->scan_aborting = true;
}
if (priv->sched_scanning) {
mwifiex_dbg(priv->adapter, INFO,
"aborting bgscan on ndo_stop\n");
mwifiex_stop_bg_scan(priv);
cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
}
return 0;
}
static bool
mwifiex_bypass_tx_queue(struct mwifiex_private *priv,
struct sk_buff *skb)
{
struct ethhdr *eth_hdr = (struct ethhdr *)skb->data;
if (ntohs(eth_hdr->h_proto) == ETH_P_PAE ||
mwifiex_is_skb_mgmt_frame(skb) ||
(GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA &&
ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
(ntohs(eth_hdr->h_proto) == ETH_P_TDLS))) {
mwifiex_dbg(priv->adapter, DATA,
"bypass txqueue; eth type %#x, mgmt %d\n",
ntohs(eth_hdr->h_proto),
mwifiex_is_skb_mgmt_frame(skb));
return true;
}
return false;
}
/*
* Add buffer into wmm tx queue and queue work to transmit it.
*/
int mwifiex_queue_tx_pkt(struct mwifiex_private *priv, struct sk_buff *skb)
{
struct netdev_queue *txq;
int index = mwifiex_1d_to_wmm_queue[skb->priority];
if (atomic_inc_return(&priv->wmm_tx_pending[index]) >= MAX_TX_PENDING) {
txq = netdev_get_tx_queue(priv->netdev, index);
if (!netif_tx_queue_stopped(txq)) {
netif_tx_stop_queue(txq);
mwifiex_dbg(priv->adapter, DATA,
"stop queue: %d\n", index);
}
}
if (mwifiex_bypass_tx_queue(priv, skb)) {
atomic_inc(&priv->adapter->tx_pending);
atomic_inc(&priv->adapter->bypass_tx_pending);
mwifiex_wmm_add_buf_bypass_txqueue(priv, skb);
} else {
atomic_inc(&priv->adapter->tx_pending);
mwifiex_wmm_add_buf_txqueue(priv, skb);
}
mwifiex_queue_main_work(priv->adapter);
return 0;
}
struct sk_buff *
mwifiex_clone_skb_for_tx_status(struct mwifiex_private *priv,
struct sk_buff *skb, u8 flag, u64 *cookie)
{
struct sk_buff *orig_skb = skb;
struct mwifiex_txinfo *tx_info, *orig_tx_info;
skb = skb_clone(skb, GFP_ATOMIC);
if (skb) {
int id;
spin_lock_bh(&priv->ack_status_lock);
id = idr_alloc(&priv->ack_status_frames, orig_skb,
1, 0x10, GFP_ATOMIC);
spin_unlock_bh(&priv->ack_status_lock);
if (id >= 0) {
tx_info = MWIFIEX_SKB_TXCB(skb);
tx_info->ack_frame_id = id;
tx_info->flags |= flag;
orig_tx_info = MWIFIEX_SKB_TXCB(orig_skb);
orig_tx_info->ack_frame_id = id;
orig_tx_info->flags |= flag;
if (flag == MWIFIEX_BUF_FLAG_ACTION_TX_STATUS && cookie)
orig_tx_info->cookie = *cookie;
} else if (skb_shared(skb)) {
kfree_skb(orig_skb);
} else {
kfree_skb(skb);
skb = orig_skb;
}
} else {
/* couldn't clone -- lose tx status ... */
skb = orig_skb;
}
return skb;
}
/*
* CFG802.11 network device handler for data transmission.
*/
static netdev_tx_t
mwifiex_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
struct sk_buff *new_skb;
struct mwifiex_txinfo *tx_info;
bool multicast;
mwifiex_dbg(priv->adapter, DATA,
"data: %lu BSS(%d-%d): Data <= kernel\n",
jiffies, priv->bss_type, priv->bss_num);
if (test_bit(MWIFIEX_SURPRISE_REMOVED, &priv->adapter->work_flags)) {
kfree_skb(skb);
priv->stats.tx_dropped++;
return 0;
}
if (!skb->len || (skb->len > ETH_FRAME_LEN)) {
mwifiex_dbg(priv->adapter, ERROR,
"Tx: bad skb len %d\n", skb->len);
kfree_skb(skb);
priv->stats.tx_dropped++;
return 0;
}
if (skb_headroom(skb) < MWIFIEX_MIN_DATA_HEADER_LEN) {
mwifiex_dbg(priv->adapter, DATA,
"data: Tx: insufficient skb headroom %d\n",
skb_headroom(skb));
/* Insufficient skb headroom - allocate a new skb */
new_skb =
skb_realloc_headroom(skb, MWIFIEX_MIN_DATA_HEADER_LEN);
if (unlikely(!new_skb)) {
mwifiex_dbg(priv->adapter, ERROR,
"Tx: cannot alloca new_skb\n");
kfree_skb(skb);
priv->stats.tx_dropped++;
return 0;
}
kfree_skb(skb);
skb = new_skb;
mwifiex_dbg(priv->adapter, INFO,
"info: new skb headroomd %d\n",
skb_headroom(skb));
}
tx_info = MWIFIEX_SKB_TXCB(skb);
memset(tx_info, 0, sizeof(*tx_info));
tx_info->bss_num = priv->bss_num;
tx_info->bss_type = priv->bss_type;
tx_info->pkt_len = skb->len;
multicast = is_multicast_ether_addr(skb->data);
if (unlikely(!multicast && skb->sk &&
skb_shinfo(skb)->tx_flags & SKBTX_WIFI_STATUS &&
priv->adapter->fw_api_ver == MWIFIEX_FW_V15))
skb = mwifiex_clone_skb_for_tx_status(priv,
skb,
MWIFIEX_BUF_FLAG_EAPOL_TX_STATUS, NULL);
/* Record the current time the packet was queued; used to
* determine the amount of time the packet was queued in
* the driver before it was sent to the firmware.
* The delay is then sent along with the packet to the
* firmware for aggregate delay calculation for stats and
* MSDU lifetime expiry.
*/
__net_timestamp(skb);
if (ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) &&
priv->bss_type == MWIFIEX_BSS_TYPE_STA &&
!ether_addr_equal_unaligned(priv->cfg_bssid, skb->data)) {
if (priv->adapter->auto_tdls && priv->check_tdls_tx)
mwifiex_tdls_check_tx(priv, skb);
}
mwifiex_queue_tx_pkt(priv, skb);
return 0;
}
int mwifiex_set_mac_address(struct mwifiex_private *priv,
struct net_device *dev, bool external,
u8 *new_mac)
{
int ret;
u64 mac_addr, old_mac_addr;
old_mac_addr = ether_addr_to_u64(priv->curr_addr);
if (external) {
mac_addr = ether_addr_to_u64(new_mac);
} else {
/* Internal mac address change */
if (priv->bss_type == MWIFIEX_BSS_TYPE_ANY)
return -EOPNOTSUPP;
mac_addr = old_mac_addr;
if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) {
mac_addr |= BIT_ULL(MWIFIEX_MAC_LOCAL_ADMIN_BIT);
mac_addr += priv->bss_num;
} else if (priv->adapter->priv[0] != priv) {
/* Set mac address based on bss_type/bss_num */
mac_addr ^= BIT_ULL(priv->bss_type + 8);
mac_addr += priv->bss_num;
}
}
u64_to_ether_addr(mac_addr, priv->curr_addr);
/* Send request to firmware */
ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_MAC_ADDRESS,
HostCmd_ACT_GEN_SET, 0, NULL, true);
if (ret) {
u64_to_ether_addr(old_mac_addr, priv->curr_addr);
mwifiex_dbg(priv->adapter, ERROR,
"set mac address failed: ret=%d\n", ret);
return ret;
}
eth_hw_addr_set(dev, priv->curr_addr);
return 0;
}
/* CFG802.11 network device handler for setting MAC address.
*/
static int
mwifiex_ndo_set_mac_address(struct net_device *dev, void *addr)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
struct sockaddr *hw_addr = addr;
return mwifiex_set_mac_address(priv, dev, true, hw_addr->sa_data);
}
/*
* CFG802.11 network device handler for setting multicast list.
*/
static void mwifiex_set_multicast_list(struct net_device *dev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
struct mwifiex_multicast_list mcast_list;
if (dev->flags & IFF_PROMISC) {
mcast_list.mode = MWIFIEX_PROMISC_MODE;
} else if (dev->flags & IFF_ALLMULTI ||
netdev_mc_count(dev) > MWIFIEX_MAX_MULTICAST_LIST_SIZE) {
mcast_list.mode = MWIFIEX_ALL_MULTI_MODE;
} else {
mcast_list.mode = MWIFIEX_MULTICAST_MODE;
mcast_list.num_multicast_addr =
mwifiex_copy_mcast_addr(&mcast_list, dev);
}
mwifiex_request_set_multicast_list(priv, &mcast_list);
}
/*
* CFG802.11 network device handler for transmission timeout.
*/
static void
mwifiex_tx_timeout(struct net_device *dev, unsigned int txqueue)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
priv->num_tx_timeout++;
priv->tx_timeout_cnt++;
mwifiex_dbg(priv->adapter, ERROR,
"%lu : Tx timeout(#%d), bss_type-num = %d-%d\n",
jiffies, priv->tx_timeout_cnt, priv->bss_type,
priv->bss_num);
mwifiex_set_trans_start(dev);
if (priv->tx_timeout_cnt > TX_TIMEOUT_THRESHOLD &&
priv->adapter->if_ops.card_reset) {
mwifiex_dbg(priv->adapter, ERROR,
"tx_timeout_cnt exceeds threshold.\t"
"Triggering card reset!\n");
priv->adapter->if_ops.card_reset(priv->adapter);
}
}
void mwifiex_multi_chan_resync(struct mwifiex_adapter *adapter)
{
struct usb_card_rec *card = adapter->card;
struct mwifiex_private *priv;
u16 tx_buf_size;
int i, ret;
card->mc_resync_flag = true;
for (i = 0; i < MWIFIEX_TX_DATA_PORT; i++) {
if (atomic_read(&card->port[i].tx_data_urb_pending)) {
mwifiex_dbg(adapter, WARN, "pending data urb in sys\n");
return;
}
}
card->mc_resync_flag = false;
tx_buf_size = 0xffff;
priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
HostCmd_ACT_GEN_SET, 0, &tx_buf_size, false);
if (ret)
mwifiex_dbg(adapter, ERROR,
"send reconfig tx buf size cmd err\n");
}
EXPORT_SYMBOL_GPL(mwifiex_multi_chan_resync);
void mwifiex_upload_device_dump(struct mwifiex_adapter *adapter)
{
/* Dump all the memory data into single file, a userspace script will
* be used to split all the memory data to multiple files
*/
mwifiex_dbg(adapter, MSG,
"== mwifiex dump information to /sys/class/devcoredump start\n");
dev_coredumpv(adapter->dev, adapter->devdump_data, adapter->devdump_len,
GFP_KERNEL);
mwifiex_dbg(adapter, MSG,
"== mwifiex dump information to /sys/class/devcoredump end\n");
/* Device dump data will be freed in device coredump release function
* after 5 min. Here reset adapter->devdump_data and ->devdump_len
* to avoid it been accidentally reused.
*/
adapter->devdump_data = NULL;
adapter->devdump_len = 0;
}
EXPORT_SYMBOL_GPL(mwifiex_upload_device_dump);
void mwifiex_drv_info_dump(struct mwifiex_adapter *adapter)
{
char *p;
char drv_version[64];
struct usb_card_rec *cardp;
struct sdio_mmc_card *sdio_card;
struct mwifiex_private *priv;
int i, idx;
struct netdev_queue *txq;
struct mwifiex_debug_info *debug_info;
mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump start===\n");
p = adapter->devdump_data;
strcpy(p, "========Start dump driverinfo========\n");
p += strlen("========Start dump driverinfo========\n");
p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
mwifiex_drv_get_driver_version(adapter, drv_version,
sizeof(drv_version) - 1);
p += sprintf(p, "driver_version = %s\n", drv_version);
if (adapter->iface_type == MWIFIEX_USB) {
cardp = (struct usb_card_rec *)adapter->card;
p += sprintf(p, "tx_cmd_urb_pending = %d\n",
atomic_read(&cardp->tx_cmd_urb_pending));
p += sprintf(p, "tx_data_urb_pending_port_0 = %d\n",
atomic_read(&cardp->port[0].tx_data_urb_pending));
p += sprintf(p, "tx_data_urb_pending_port_1 = %d\n",
atomic_read(&cardp->port[1].tx_data_urb_pending));
p += sprintf(p, "rx_cmd_urb_pending = %d\n",
atomic_read(&cardp->rx_cmd_urb_pending));
p += sprintf(p, "rx_data_urb_pending = %d\n",
atomic_read(&cardp->rx_data_urb_pending));
}
p += sprintf(p, "tx_pending = %d\n",
atomic_read(&adapter->tx_pending));
p += sprintf(p, "rx_pending = %d\n",
atomic_read(&adapter->rx_pending));
if (adapter->iface_type == MWIFIEX_SDIO) {
sdio_card = (struct sdio_mmc_card *)adapter->card;
p += sprintf(p, "\nmp_rd_bitmap=0x%x curr_rd_port=0x%x\n",
sdio_card->mp_rd_bitmap, sdio_card->curr_rd_port);
p += sprintf(p, "mp_wr_bitmap=0x%x curr_wr_port=0x%x\n",
sdio_card->mp_wr_bitmap, sdio_card->curr_wr_port);
}
for (i = 0; i < adapter->priv_num; i++) {
if (!adapter->priv[i] || !adapter->priv[i]->netdev)
continue;
priv = adapter->priv[i];
p += sprintf(p, "\n[interface : \"%s\"]\n",
priv->netdev->name);
p += sprintf(p, "wmm_tx_pending[0] = %d\n",
atomic_read(&priv->wmm_tx_pending[0]));
p += sprintf(p, "wmm_tx_pending[1] = %d\n",
atomic_read(&priv->wmm_tx_pending[1]));
p += sprintf(p, "wmm_tx_pending[2] = %d\n",
atomic_read(&priv->wmm_tx_pending[2]));
p += sprintf(p, "wmm_tx_pending[3] = %d\n",
atomic_read(&priv->wmm_tx_pending[3]));
p += sprintf(p, "media_state=\"%s\"\n", !priv->media_connected ?
"Disconnected" : "Connected");
p += sprintf(p, "carrier %s\n", (netif_carrier_ok(priv->netdev)
? "on" : "off"));
for (idx = 0; idx < priv->netdev->num_tx_queues; idx++) {
txq = netdev_get_tx_queue(priv->netdev, idx);
p += sprintf(p, "tx queue %d:%s ", idx,
netif_tx_queue_stopped(txq) ?
"stopped" : "started");
}
p += sprintf(p, "\n%s: num_tx_timeout = %d\n",
priv->netdev->name, priv->num_tx_timeout);
}
if (adapter->iface_type == MWIFIEX_SDIO ||
adapter->iface_type == MWIFIEX_PCIE) {
p += sprintf(p, "\n=== %s register dump===\n",
adapter->iface_type == MWIFIEX_SDIO ?
"SDIO" : "PCIE");
if (adapter->if_ops.reg_dump)
p += adapter->if_ops.reg_dump(adapter, p);
}
p += sprintf(p, "\n=== more debug information\n");
debug_info = kzalloc(sizeof(*debug_info), GFP_KERNEL);
if (debug_info) {
for (i = 0; i < adapter->priv_num; i++) {
if (!adapter->priv[i] || !adapter->priv[i]->netdev)
continue;
priv = adapter->priv[i];
mwifiex_get_debug_info(priv, debug_info);
p += mwifiex_debug_info_to_buffer(priv, p, debug_info);
break;
}
kfree(debug_info);
}
strcpy(p, "\n========End dump========\n");
p += strlen("\n========End dump========\n");
mwifiex_dbg(adapter, MSG, "===mwifiex driverinfo dump end===\n");
adapter->devdump_len = p - (char *)adapter->devdump_data;
}
EXPORT_SYMBOL_GPL(mwifiex_drv_info_dump);
void mwifiex_prepare_fw_dump_info(struct mwifiex_adapter *adapter)
{
u8 idx;
char *fw_dump_ptr;
u32 dump_len = 0;
for (idx = 0; idx < adapter->num_mem_types; idx++) {
struct memory_type_mapping *entry =
&adapter->mem_type_mapping_tbl[idx];
if (entry->mem_ptr) {
dump_len += (strlen("========Start dump ") +
strlen(entry->mem_name) +
strlen("========\n") +
(entry->mem_size + 1) +
strlen("\n========End dump========\n"));
}
}
if (dump_len + 1 + adapter->devdump_len > MWIFIEX_FW_DUMP_SIZE) {
/* Realloc in case buffer overflow */
fw_dump_ptr = vzalloc(dump_len + 1 + adapter->devdump_len);
mwifiex_dbg(adapter, MSG, "Realloc device dump data.\n");
if (!fw_dump_ptr) {
vfree(adapter->devdump_data);
mwifiex_dbg(adapter, ERROR,
"vzalloc devdump data failure!\n");
return;
}
memmove(fw_dump_ptr, adapter->devdump_data,
adapter->devdump_len);
vfree(adapter->devdump_data);
adapter->devdump_data = fw_dump_ptr;
}
fw_dump_ptr = (char *)adapter->devdump_data + adapter->devdump_len;
for (idx = 0; idx < adapter->num_mem_types; idx++) {
struct memory_type_mapping *entry =
&adapter->mem_type_mapping_tbl[idx];
if (entry->mem_ptr) {
strcpy(fw_dump_ptr, "========Start dump ");
fw_dump_ptr += strlen("========Start dump ");
strcpy(fw_dump_ptr, entry->mem_name);
fw_dump_ptr += strlen(entry->mem_name);
strcpy(fw_dump_ptr, "========\n");
fw_dump_ptr += strlen("========\n");
memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
fw_dump_ptr += entry->mem_size;
strcpy(fw_dump_ptr, "\n========End dump========\n");
fw_dump_ptr += strlen("\n========End dump========\n");
}
}
adapter->devdump_len = fw_dump_ptr - (char *)adapter->devdump_data;
for (idx = 0; idx < adapter->num_mem_types; idx++) {
struct memory_type_mapping *entry =
&adapter->mem_type_mapping_tbl[idx];
vfree(entry->mem_ptr);
entry->mem_ptr = NULL;
entry->mem_size = 0;
}
}
EXPORT_SYMBOL_GPL(mwifiex_prepare_fw_dump_info);
/*
* CFG802.11 network device handler for statistics retrieval.
*/
static struct net_device_stats *mwifiex_get_stats(struct net_device *dev)
{
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
return &priv->stats;
}
static u16
mwifiex_netdev_select_wmm_queue(struct net_device *dev, struct sk_buff *skb,
struct net_device *sb_dev)
{
skb->priority = cfg80211_classify8021d(skb, NULL);
return mwifiex_1d_to_wmm_queue[skb->priority];
}
/* Network device handlers */
static const struct net_device_ops mwifiex_netdev_ops = {
.ndo_open = mwifiex_open,
.ndo_stop = mwifiex_close,
.ndo_start_xmit = mwifiex_hard_start_xmit,
.ndo_set_mac_address = mwifiex_ndo_set_mac_address,
.ndo_validate_addr = eth_validate_addr,
.ndo_tx_timeout = mwifiex_tx_timeout,
.ndo_get_stats = mwifiex_get_stats,
.ndo_set_rx_mode = mwifiex_set_multicast_list,
.ndo_select_queue = mwifiex_netdev_select_wmm_queue,
};
/*
* This function initializes the private structure parameters.
*
* The following wait queues are initialized -
* - IOCTL wait queue
* - Command wait queue
* - Statistics wait queue
*
* ...and the following default parameters are set -
* - Current key index : Set to 0
* - Rate index : Set to auto
* - Media connected : Set to disconnected
* - Adhoc link sensed : Set to false
* - Nick name : Set to null
* - Number of Tx timeout : Set to 0
* - Device address : Set to current address
* - Rx histogram statistc : Set to 0
*
* In addition, the CFG80211 work queue is also created.
*/
void mwifiex_init_priv_params(struct mwifiex_private *priv,
struct net_device *dev)
{
dev->netdev_ops = &mwifiex_netdev_ops;
dev->needs_free_netdev = true;
/* Initialize private structure */
priv->current_key_index = 0;
priv->media_connected = false;
memset(priv->mgmt_ie, 0,
sizeof(struct mwifiex_ie) * MAX_MGMT_IE_INDEX);
priv->beacon_idx = MWIFIEX_AUTO_IDX_MASK;
priv->proberesp_idx = MWIFIEX_AUTO_IDX_MASK;
priv->assocresp_idx = MWIFIEX_AUTO_IDX_MASK;
priv->gen_idx = MWIFIEX_AUTO_IDX_MASK;
priv->num_tx_timeout = 0;
if (is_valid_ether_addr(dev->dev_addr))
ether_addr_copy(priv->curr_addr, dev->dev_addr);
else
ether_addr_copy(priv->curr_addr, priv->adapter->perm_addr);
if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA ||
GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
priv->hist_data = kmalloc(sizeof(*priv->hist_data), GFP_KERNEL);
if (priv->hist_data)
mwifiex_hist_data_reset(priv);
}
}
/*
* This function check if command is pending.
*/
int is_command_pending(struct mwifiex_adapter *adapter)
{
int is_cmd_pend_q_empty;
spin_lock_bh(&adapter->cmd_pending_q_lock);
is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q);
spin_unlock_bh(&adapter->cmd_pending_q_lock);
return !is_cmd_pend_q_empty;
}
/*
* This is the RX work queue function.
*
* It handles the RX operations.
*/
static void mwifiex_rx_work_queue(struct work_struct *work)
{
struct mwifiex_adapter *adapter =
container_of(work, struct mwifiex_adapter, rx_work);
if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
return;
mwifiex_process_rx(adapter);
}
/*
* This is the main work queue function.
*
* It handles the main process, which in turn handles the complete
* driver operations.
*/
static void mwifiex_main_work_queue(struct work_struct *work)
{
struct mwifiex_adapter *adapter =
container_of(work, struct mwifiex_adapter, main_work);
if (test_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags))
return;
mwifiex_main_process(adapter);
}
/* Common teardown code used for both device removal and reset */
static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv;
int i;
/* We can no longer handle interrupts once we start doing the teardown
* below.
*/
if (adapter->if_ops.disable_int)
adapter->if_ops.disable_int(adapter);
set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
mwifiex_terminate_workqueue(adapter);
adapter->int_status = 0;
/* Stop data */
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (priv && priv->netdev) {
mwifiex_stop_net_dev_queue(priv->netdev, adapter);
if (netif_carrier_ok(priv->netdev))
netif_carrier_off(priv->netdev);
netif_device_detach(priv->netdev);
}
}
mwifiex_dbg(adapter, CMD, "cmd: calling mwifiex_shutdown_drv...\n");
mwifiex_shutdown_drv(adapter);
mwifiex_dbg(adapter, CMD, "cmd: mwifiex_shutdown_drv done\n");
if (atomic_read(&adapter->rx_pending) ||
atomic_read(&adapter->tx_pending) ||
atomic_read(&adapter->cmd_pending)) {
mwifiex_dbg(adapter, ERROR,
"rx_pending=%d, tx_pending=%d,\t"
"cmd_pending=%d\n",
atomic_read(&adapter->rx_pending),
atomic_read(&adapter->tx_pending),
atomic_read(&adapter->cmd_pending));
}
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (!priv)
continue;
rtnl_lock();
if (priv->netdev &&
priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED) {
/*
* Close the netdev now, because if we do it later, the
* netdev notifiers will need to acquire the wiphy lock
* again --> deadlock.
*/
dev_close(priv->wdev.netdev);
wiphy_lock(adapter->wiphy);
mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
wiphy_unlock(adapter->wiphy);
}
rtnl_unlock();
}
wiphy_unregister(adapter->wiphy);
wiphy_free(adapter->wiphy);
adapter->wiphy = NULL;
vfree(adapter->chan_stats);
mwifiex_free_cmd_buffers(adapter);
}
/*
* This function can be used for shutting down the adapter SW.
*/
int mwifiex_shutdown_sw(struct mwifiex_adapter *adapter)
{
struct mwifiex_private *priv;
if (!adapter)
return 0;
wait_for_completion(adapter->fw_done);
/* Caller should ensure we aren't suspending while this happens */
reinit_completion(adapter->fw_done);
priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
mwifiex_deauthenticate(priv, NULL);
mwifiex_init_shutdown_fw(priv, MWIFIEX_FUNC_SHUTDOWN);
mwifiex_uninit_sw(adapter);
adapter->is_up = false;
if (adapter->if_ops.down_dev)
adapter->if_ops.down_dev(adapter);
return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_shutdown_sw);
/* This function can be used for reinitting the adapter SW. Required
* code is extracted from mwifiex_add_card()
*/
int
mwifiex_reinit_sw(struct mwifiex_adapter *adapter)
{
int ret;
mwifiex_init_lock_list(adapter);
if (adapter->if_ops.up_dev)
adapter->if_ops.up_dev(adapter);
adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
init_waitqueue_head(&adapter->init_wait_q);
clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
adapter->hs_activated = false;
clear_bit(MWIFIEX_IS_CMD_TIMEDOUT, &adapter->work_flags);
init_waitqueue_head(&adapter->hs_activate_wait_q);
init_waitqueue_head(&adapter->cmd_wait_q.wait);
adapter->cmd_wait_q.status = 0;
adapter->scan_wait_q_woken = false;
if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
adapter->rx_work_enabled = true;
adapter->workqueue =
alloc_workqueue("MWIFIEX_WORK_QUEUE",
WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
if (!adapter->workqueue)
goto err_kmalloc;
INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
if (adapter->rx_work_enabled) {
adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
WQ_HIGHPRI |
WQ_MEM_RECLAIM |
WQ_UNBOUND, 1);
if (!adapter->rx_workqueue)
goto err_kmalloc;
INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
}
/* Register the device. Fill up the private data structure with
* relevant information from the card. Some code extracted from
* mwifiex_register_dev()
*/
mwifiex_dbg(adapter, INFO, "%s, mwifiex_init_hw_fw()...\n", __func__);
if (mwifiex_init_hw_fw(adapter, false)) {
mwifiex_dbg(adapter, ERROR,
"%s: firmware init failed\n", __func__);
goto err_init_fw;
}
/* _mwifiex_fw_dpc() does its own cleanup */
ret = _mwifiex_fw_dpc(adapter->firmware, adapter);
if (ret) {
pr_err("Failed to bring up adapter: %d\n", ret);
return ret;
}
mwifiex_dbg(adapter, INFO, "%s, successful\n", __func__);
return 0;
err_init_fw:
mwifiex_dbg(adapter, ERROR, "info: %s: unregister device\n", __func__);
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
err_kmalloc:
set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
mwifiex_terminate_workqueue(adapter);
if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
mwifiex_dbg(adapter, ERROR,
"info: %s: shutdown mwifiex\n", __func__);
mwifiex_shutdown_drv(adapter);
mwifiex_free_cmd_buffers(adapter);
}
complete_all(adapter->fw_done);
mwifiex_dbg(adapter, INFO, "%s, error\n", __func__);
return -1;
}
EXPORT_SYMBOL_GPL(mwifiex_reinit_sw);
static irqreturn_t mwifiex_irq_wakeup_handler(int irq, void *priv)
{
struct mwifiex_adapter *adapter = priv;
dev_dbg(adapter->dev, "%s: wake by wifi", __func__);
adapter->wake_by_wifi = true;
disable_irq_nosync(irq);
/* Notify PM core we are wakeup source */
pm_wakeup_event(adapter->dev, 0);
pm_system_wakeup();
return IRQ_HANDLED;
}
static void mwifiex_probe_of(struct mwifiex_adapter *adapter)
{
int ret;
struct device *dev = adapter->dev;
if (!dev->of_node)
goto err_exit;
adapter->dt_node = dev->of_node;
adapter->irq_wakeup = irq_of_parse_and_map(adapter->dt_node, 0);
if (!adapter->irq_wakeup) {
dev_dbg(dev, "fail to parse irq_wakeup from device tree\n");
goto err_exit;
}
ret = devm_request_irq(dev, adapter->irq_wakeup,
mwifiex_irq_wakeup_handler, IRQF_TRIGGER_LOW,
"wifi_wake", adapter);
if (ret) {
dev_err(dev, "Failed to request irq_wakeup %d (%d)\n",
adapter->irq_wakeup, ret);
goto err_exit;
}
disable_irq(adapter->irq_wakeup);
if (device_init_wakeup(dev, true)) {
dev_err(dev, "fail to init wakeup for mwifiex\n");
goto err_exit;
}
return;
err_exit:
adapter->irq_wakeup = -1;
}
/*
* This function adds the card.
*
* This function follows the following major steps to set up the device -
* - Initialize software. This includes probing the card, registering
* the interface operations table, and allocating/initializing the
* adapter structure
* - Set up the netlink socket
* - Create and start the main work queue
* - Register the device
* - Initialize firmware and hardware
* - Add logical interfaces
*/
int
mwifiex_add_card(void *card, struct completion *fw_done,
struct mwifiex_if_ops *if_ops, u8 iface_type,
struct device *dev)
{
struct mwifiex_adapter *adapter;
if (mwifiex_register(card, dev, if_ops, (void **)&adapter)) {
pr_err("%s: software init failed\n", __func__);
goto err_init_sw;
}
mwifiex_probe_of(adapter);
adapter->iface_type = iface_type;
adapter->fw_done = fw_done;
adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING;
clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
init_waitqueue_head(&adapter->init_wait_q);
clear_bit(MWIFIEX_IS_SUSPENDED, &adapter->work_flags);
adapter->hs_activated = false;
init_waitqueue_head(&adapter->hs_activate_wait_q);
init_waitqueue_head(&adapter->cmd_wait_q.wait);
adapter->cmd_wait_q.status = 0;
adapter->scan_wait_q_woken = false;
if ((num_possible_cpus() > 1) || adapter->iface_type == MWIFIEX_USB)
adapter->rx_work_enabled = true;
adapter->workqueue =
alloc_workqueue("MWIFIEX_WORK_QUEUE",
WQ_HIGHPRI | WQ_MEM_RECLAIM | WQ_UNBOUND, 1);
if (!adapter->workqueue)
goto err_kmalloc;
INIT_WORK(&adapter->main_work, mwifiex_main_work_queue);
if (adapter->rx_work_enabled) {
adapter->rx_workqueue = alloc_workqueue("MWIFIEX_RX_WORK_QUEUE",
WQ_HIGHPRI |
WQ_MEM_RECLAIM |
WQ_UNBOUND, 1);
if (!adapter->rx_workqueue)
goto err_kmalloc;
INIT_WORK(&adapter->rx_work, mwifiex_rx_work_queue);
}
/* Register the device. Fill up the private data structure with relevant
information from the card. */
if (adapter->if_ops.register_dev(adapter)) {
pr_err("%s: failed to register mwifiex device\n", __func__);
goto err_registerdev;
}
if (mwifiex_init_hw_fw(adapter, true)) {
pr_err("%s: firmware init failed\n", __func__);
goto err_init_fw;
}
return 0;
err_init_fw:
pr_debug("info: %s: unregister device\n", __func__);
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
err_registerdev:
set_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags);
mwifiex_terminate_workqueue(adapter);
if (adapter->hw_status == MWIFIEX_HW_STATUS_READY) {
pr_debug("info: %s: shutdown mwifiex\n", __func__);
mwifiex_shutdown_drv(adapter);
mwifiex_free_cmd_buffers(adapter);
}
err_kmalloc:
if (adapter->irq_wakeup >= 0)
device_init_wakeup(adapter->dev, false);
mwifiex_free_adapter(adapter);
err_init_sw:
return -1;
}
EXPORT_SYMBOL_GPL(mwifiex_add_card);
/*
* This function removes the card.
*
* This function follows the following major steps to remove the device -
* - Stop data traffic
* - Shutdown firmware
* - Remove the logical interfaces
* - Terminate the work queue
* - Unregister the device
* - Free the adapter structure
*/
int mwifiex_remove_card(struct mwifiex_adapter *adapter)
{
if (!adapter)
return 0;
if (adapter->is_up)
mwifiex_uninit_sw(adapter);
if (adapter->irq_wakeup >= 0)
device_init_wakeup(adapter->dev, false);
/* Unregister device */
mwifiex_dbg(adapter, INFO,
"info: unregister device\n");
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
/* Free adapter structure */
mwifiex_dbg(adapter, INFO,
"info: free adapter\n");
mwifiex_free_adapter(adapter);
return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_remove_card);
void _mwifiex_dbg(const struct mwifiex_adapter *adapter, int mask,
const char *fmt, ...)
{
struct va_format vaf;
va_list args;
if (!(adapter->debug_mask & mask))
return;
va_start(args, fmt);
vaf.fmt = fmt;
vaf.va = &args;
if (adapter->dev)
dev_info(adapter->dev, "%pV", &vaf);
else
pr_info("%pV", &vaf);
va_end(args);
}
EXPORT_SYMBOL_GPL(_mwifiex_dbg);
/*
* This function initializes the module.
*
* The debug FS is also initialized if configured.
*/
static int
mwifiex_init_module(void)
{
#ifdef CONFIG_DEBUG_FS
mwifiex_debugfs_init();
#endif
return 0;
}
/*
* This function cleans up the module.
*
* The debug FS is removed if available.
*/
static void
mwifiex_cleanup_module(void)
{
#ifdef CONFIG_DEBUG_FS
mwifiex_debugfs_remove();
#endif
}
module_init(mwifiex_init_module);
module_exit(mwifiex_cleanup_module);
MODULE_AUTHOR("Marvell International Ltd.");
MODULE_DESCRIPTION("Marvell WiFi-Ex Driver version " VERSION);
MODULE_VERSION(VERSION);
MODULE_LICENSE("GPL v2");