/*
* 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 void mwifiex_fw_dpc(const struct firmware *firmware, void *context)
{
int ret;
char fmt[64];
struct mwifiex_private *priv;
struct mwifiex_adapter *adapter = context;
struct mwifiex_fw_image fw;
if (!firmware) {
dev_err(adapter->dev,
"Failed to get firmware %s\n", adapter->fw_name);
goto done;
}
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 done;
dev_notice(adapter->dev, "WLAN FW is active\n");
adapter->init_wait_q_woken = false;
ret = mwifiex_init_fw(adapter);
if (ret == -1) {
goto done;
} else if (!ret) {
adapter->hw_status = MWIFIEX_HW_STATUS_READY;
goto done;
}
/* Wait for mwifiex_init to complete */
wait_event_interruptible(adapter->init_wait_q,
adapter->init_wait_q_woken);
if (adapter->hw_status != MWIFIEX_HW_STATUS_READY)
goto done;
priv = adapter->priv[MWIFIEX_BSS_ROLE_STA];
if (mwifiex_register_cfg80211(adapter)) {
dev_err(adapter->dev, "cannot register with cfg80211\n");
goto err_init_fw;
}
rtnl_lock();
/* Create station interface by default */
if (!mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d",
NL80211_IFTYPE_STATION, NULL, NULL)) {
dev_err(adapter->dev, "cannot create default STA interface\n");
goto err_add_intf;
}
/* Create AP interface by default */
if (!mwifiex_add_virtual_intf(adapter->wiphy, "uap%d",
NL80211_IFTYPE_AP, NULL, NULL)) {
dev_err(adapter->dev, "cannot create default AP interface\n");
goto err_add_intf;
}
/* Create P2P interface by default */
if (!mwifiex_add_virtual_intf(adapter->wiphy, "p2p%d",
NL80211_IFTYPE_P2P_CLIENT, NULL, NULL)) {
dev_err(adapter->dev, "cannot create default P2P interface\n");
goto err_add_intf;
}
rtnl_unlock();
mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
dev_notice(adapter->dev, "driver_version = %s\n", fmt);
goto done;
err_add_intf:
mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev);
rtnl_unlock();
err_init_fw:
pr_debug("info: %s: unregister device\n", __func__);
adapter->if_ops.unregister_dev(adapter);
done:
release_firmware(adapter->firmware);
complete(&adapter->fw_load);
return;
}
/*
* 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, struct semaphore *sem)
{
struct mwifiex_private *priv = NULL;
int i;
if (down_interruptible(sem))
goto exit_sem_err;
if (!adapter)
goto exit_remove;
adapter->surprise_removed = true;
/* 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);
}
}
dev_dbg(adapter->dev, "cmd: calling mwifiex_shutdown_drv...\n");
adapter->init_wait_q_woken = false;
if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
wait_event_interruptible(adapter->init_wait_q,
adapter->init_wait_q_woken);
dev_dbg(adapter->dev, "cmd: mwifiex_shutdown_drv done\n");
if (atomic_read(&adapter->rx_pending) ||
atomic_read(&adapter->tx_pending) ||
atomic_read(&adapter->cmd_pending)) {
dev_err(adapter->dev, "rx_pending=%d, tx_pending=%d, "
"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->wdev && priv->netdev)
mwifiex_del_virtual_intf(adapter->wiphy, priv->wdev);
rtnl_unlock();
}
priv = adapter->priv[0];
if (!priv || !priv->wdev)
goto exit_remove;
wiphy_unregister(priv->wdev->wiphy);
wiphy_free(priv->wdev->wiphy);
for (i = 0; i < adapter->priv_num; i++) {
priv = adapter->priv[i];
if (priv)
kfree(priv->wdev);
}
mwifiex_terminate_workqueue(adapter);
/* Unregister device */
dev_dbg(adapter->dev, "info: unregister device\n");
if (adapter->if_ops.unregister_dev)
adapter->if_ops.unregister_dev(adapter);
/* Free adapter structure */
dev_dbg(adapter->dev, "info: free adapter\n");
mwifiex_free_adapter(adapter);
exit_remove:
up(sem);
exit_sem_err:
return 0;
}
/*
* 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, struct semaphore *sem)
{
struct mwifiex_private *priv = NULL;
int i;
if (down_trylock(sem))
goto exit_sem_err;
if (!adapter)
goto exit_remove;
/* 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);
adapter->surprise_removed = true;
mwifiex_terminate_workqueue(adapter);
/* 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);
}
}
mwifiex_dbg(adapter, CMD,
"cmd: calling mwifiex_shutdown_drv...\n");
adapter->init_wait_q_woken = false;
if (mwifiex_shutdown_drv(adapter) == -EINPROGRESS)
wait_event_interruptible(adapter->init_wait_q,
adapter->init_wait_q_woken);
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)
mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
rtnl_unlock();
}
wiphy_unregister(adapter->wiphy);
wiphy_free(adapter->wiphy);
/* 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);
exit_remove:
up(sem);
exit_sem_err:
return 0;
}
