diff options
Diffstat (limited to 'drivers/net/wireless/iwmc3200wifi/netdev.c')
| -rw-r--r-- | drivers/net/wireless/iwmc3200wifi/netdev.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwmc3200wifi/netdev.c b/drivers/net/wireless/iwmc3200wifi/netdev.c new file mode 100644 index 00000000000..eec7201e91a --- /dev/null +++ b/drivers/net/wireless/iwmc3200wifi/netdev.c @@ -0,0 +1,172 @@ +/* + * Intel Wireless Multicomm 3200 WiFi driver + * + * Copyright (C) 2009 Intel Corporation <ilw@linux.intel.com> + * Samuel Ortiz <samuel.ortiz@intel.com> + * Zhu Yi <yi.zhu@intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 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 + * 02110-1301, USA. + * + */ + +/* + * This is the netdev related hooks for iwm. + * + * Some interesting code paths: + * + * iwm_open() (Called at netdev interface bringup time) + * -> iwm_up() (main.c) + * -> iwm_bus_enable() + * -> if_sdio_enable() (In case of an SDIO bus) + * -> sdio_enable_func() + * -> iwm_notif_wait(BARKER_REBOOT) (wait for reboot barker) + * -> iwm_notif_wait(ACK_BARKER) (wait for ACK barker) + * -> iwm_load_fw() (fw.c) + * -> iwm_load_umac() + * -> iwm_load_lmac() (Calibration LMAC) + * -> iwm_load_lmac() (Operational LMAC) + * -> iwm_send_umac_config() + * + * iwm_stop() (Called at netdev interface bringdown time) + * -> iwm_down() + * -> iwm_bus_disable() + * -> if_sdio_disable() (In case of an SDIO bus) + * -> sdio_disable_func() + */ +#include <linux/netdevice.h> + +#include "iwm.h" +#include "cfg80211.h" +#include "debug.h" + +static int iwm_open(struct net_device *ndev) +{ + struct iwm_priv *iwm = ndev_to_iwm(ndev); + int ret = 0; + + if (!test_bit(IWM_RADIO_RFKILL_SW, &iwm->radio)) + ret = iwm_up(iwm); + + return ret; +} + +static int iwm_stop(struct net_device *ndev) +{ + struct iwm_priv *iwm = ndev_to_iwm(ndev); + int ret = 0; + + if (!test_bit(IWM_RADIO_RFKILL_SW, &iwm->radio)) + ret = iwm_down(iwm); + + return ret; +} + +/* + * iwm AC to queue mapping + * + * AC_VO -> queue 3 + * AC_VI -> queue 2 + * AC_BE -> queue 1 + * AC_BK -> queue 0 + */ +static const u16 iwm_1d_to_queue[8] = { 1, 0, 0, 1, 2, 2, 3, 3 }; + +static u16 iwm_select_queue(struct net_device *dev, struct sk_buff *skb) +{ + skb->priority = cfg80211_classify8021d(skb); + + return iwm_1d_to_queue[skb->priority]; +} + +static const struct net_device_ops iwm_netdev_ops = { + .ndo_open = iwm_open, + .ndo_stop = iwm_stop, + .ndo_start_xmit = iwm_xmit_frame, + .ndo_select_queue = iwm_select_queue, +}; + +void *iwm_if_alloc(int sizeof_bus, struct device *dev, + struct iwm_if_ops *if_ops) +{ + struct net_device *ndev; + struct wireless_dev *wdev; + struct iwm_priv *iwm; + int ret = 0; + + wdev = iwm_wdev_alloc(sizeof_bus, dev); + if (!wdev) { + dev_err(dev, "no memory for wireless device instance\n"); + return ERR_PTR(-ENOMEM); + } + + iwm = wdev_to_iwm(wdev); + iwm->bus_ops = if_ops; + iwm->wdev = wdev; + iwm_priv_init(iwm); + wdev->iftype = iwm_mode_to_nl80211_iftype(iwm->conf.mode); + + ndev = alloc_netdev_mq(0, "wlan%d", ether_setup, + IWM_TX_QUEUES); + if (!ndev) { + dev_err(dev, "no memory for network device instance\n"); + goto out_wdev; + } + + ndev->netdev_ops = &iwm_netdev_ops; + ndev->wireless_handlers = &iwm_iw_handler_def; + ndev->ieee80211_ptr = wdev; + SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy)); + ret = register_netdev(ndev); + if (ret < 0) { + dev_err(dev, "Failed to register netdev: %d\n", ret); + goto out_ndev; + } + + wdev->netdev = ndev; + + ret = iwm_rfkill_init(iwm); + if (ret) { + dev_err(dev, "Failed to init rfkill\n"); + goto out_rfkill; + } + + return iwm; + + out_rfkill: + unregister_netdev(ndev); + + out_ndev: + free_netdev(ndev); + + out_wdev: + iwm_wdev_free(iwm); + return ERR_PTR(ret); +} + +void iwm_if_free(struct iwm_priv *iwm) +{ + int i; + + if (!iwm_to_ndev(iwm)) + return; + + iwm_rfkill_exit(iwm); + unregister_netdev(iwm_to_ndev(iwm)); + free_netdev(iwm_to_ndev(iwm)); + iwm_wdev_free(iwm); + destroy_workqueue(iwm->rx_wq); + for (i = 0; i < IWM_TX_QUEUES; i++) + destroy_workqueue(iwm->txq[i].wq); +} |