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/*
* 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);
}
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