/* * Intel Wireless Multicomm 3200 WiFi driver * * Copyright (C) 2009 Intel Corporation * Samuel Ortiz * Zhu Yi * * 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 #include "iwm.h" #include "commands.h" #include "cfg80211.h" #include "debug.h" static int iwm_open(struct net_device *ndev) { struct iwm_priv *iwm = ndev_to_iwm(ndev); return iwm_up(iwm); } static int iwm_stop(struct net_device *ndev) { struct iwm_priv *iwm = ndev_to_iwm(ndev); return iwm_down(iwm); } /* * 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; ret = iwm_priv_init(iwm); if (ret) { dev_err(dev, "failed to init iwm_priv\n"); goto out_wdev; } 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_priv; } ndev->netdev_ops = &iwm_netdev_ops; ndev->ieee80211_ptr = wdev; SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy)); wdev->netdev = ndev; iwm->umac_profile = kmalloc(sizeof(struct iwm_umac_profile), GFP_KERNEL); if (!iwm->umac_profile) { dev_err(dev, "Couldn't alloc memory for profile\n"); goto out_profile; } iwm_init_default_profile(iwm, iwm->umac_profile); return iwm; out_profile: free_netdev(ndev); out_priv: iwm_priv_deinit(iwm); out_wdev: iwm_wdev_free(iwm); return ERR_PTR(ret); } void iwm_if_free(struct iwm_priv *iwm) { if (!iwm_to_ndev(iwm)) return; free_netdev(iwm_to_ndev(iwm)); iwm_priv_deinit(iwm); kfree(iwm->umac_profile); iwm->umac_profile = NULL; iwm_wdev_free(iwm); } int iwm_if_add(struct iwm_priv *iwm) { struct net_device *ndev = iwm_to_ndev(iwm); int ret; ret = register_netdev(ndev); if (ret < 0) { dev_err(&ndev->dev, "Failed to register netdev: %d\n", ret); return ret; } return 0; } void iwm_if_remove(struct iwm_priv *iwm) { unregister_netdev(iwm_to_ndev(iwm)); }