diff options
Diffstat (limited to 'drivers/net/wireless/libertas/cfg.c')
| -rw-r--r-- | drivers/net/wireless/libertas/cfg.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/drivers/net/wireless/libertas/cfg.c b/drivers/net/wireless/libertas/cfg.c new file mode 100644 index 0000000..4396dcc --- /dev/null +++ b/drivers/net/wireless/libertas/cfg.c @@ -0,0 +1,198 @@ +/* + * Implement cfg80211 ("iw") support. + * + * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany + * Holger Schurig <hs4233@mail.mn-solutions.de> + * + */ + +#include <net/cfg80211.h> + +#include "cfg.h" +#include "cmd.h" + + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .center_freq = (_freq), \ + .hw_value = (_channel), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static struct ieee80211_channel lbs_2ghz_channels[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +#define RATETAB_ENT(_rate, _rateid, _flags) { \ + .bitrate = (_rate), \ + .hw_value = (_rateid), \ + .flags = (_flags), \ +} + + +static struct ieee80211_rate lbs_rates[] = { + RATETAB_ENT(10, 0x1, 0), + RATETAB_ENT(20, 0x2, 0), + RATETAB_ENT(55, 0x4, 0), + RATETAB_ENT(110, 0x8, 0), + RATETAB_ENT(60, 0x10, 0), + RATETAB_ENT(90, 0x20, 0), + RATETAB_ENT(120, 0x40, 0), + RATETAB_ENT(180, 0x80, 0), + RATETAB_ENT(240, 0x100, 0), + RATETAB_ENT(360, 0x200, 0), + RATETAB_ENT(480, 0x400, 0), + RATETAB_ENT(540, 0x800, 0), +}; + +static struct ieee80211_supported_band lbs_band_2ghz = { + .channels = lbs_2ghz_channels, + .n_channels = ARRAY_SIZE(lbs_2ghz_channels), + .bitrates = lbs_rates, + .n_bitrates = ARRAY_SIZE(lbs_rates), +}; + + +static const u32 cipher_suites[] = { + WLAN_CIPHER_SUITE_WEP40, + WLAN_CIPHER_SUITE_WEP104, + WLAN_CIPHER_SUITE_TKIP, + WLAN_CIPHER_SUITE_CCMP, +}; + + + +static int lbs_cfg_set_channel(struct wiphy *wiphy, + struct ieee80211_channel *chan, + enum nl80211_channel_type channel_type) +{ + struct lbs_private *priv = wiphy_priv(wiphy); + int ret = -ENOTSUPP; + + lbs_deb_enter_args(LBS_DEB_CFG80211, "freq %d, type %d", chan->center_freq, channel_type); + + if (channel_type != NL80211_CHAN_NO_HT) + goto out; + + ret = lbs_set_channel(priv, chan->hw_value); + + out: + lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); + return ret; +} + + + + +static struct cfg80211_ops lbs_cfg80211_ops = { + .set_channel = lbs_cfg_set_channel, +}; + + +/* + * At this time lbs_private *priv doesn't even exist, so we just allocate + * memory and don't initialize the wiphy further. This is postponed until we + * can talk to the firmware and happens at registration time in + * lbs_cfg_wiphy_register(). + */ +struct wireless_dev *lbs_cfg_alloc(struct device *dev) +{ + int ret = 0; + struct wireless_dev *wdev; + + lbs_deb_enter(LBS_DEB_CFG80211); + + wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL); + if (!wdev) { + dev_err(dev, "cannot allocate wireless device\n"); + return ERR_PTR(-ENOMEM); + } + + wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private)); + if (!wdev->wiphy) { + dev_err(dev, "cannot allocate wiphy\n"); + ret = -ENOMEM; + goto err_wiphy_new; + } + + lbs_deb_leave(LBS_DEB_CFG80211); + return wdev; + + err_wiphy_new: + kfree(wdev); + lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); + return ERR_PTR(ret); +} + + +/* + * This function get's called after lbs_setup_firmware() determined the + * firmware capabities. So we can setup the wiphy according to our + * hardware/firmware. + */ +int lbs_cfg_register(struct lbs_private *priv) +{ + struct wireless_dev *wdev = priv->wdev; + int ret; + + lbs_deb_enter(LBS_DEB_CFG80211); + + wdev->wiphy->max_scan_ssids = 1; + wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM; + + /* TODO: BIT(NL80211_IFTYPE_ADHOC); */ + wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION); + + /* TODO: honor priv->regioncode */ + wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &lbs_band_2ghz; + + /* + * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have + * never seen a firmware without WPA + */ + wdev->wiphy->cipher_suites = cipher_suites; + wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites); + + ret = wiphy_register(wdev->wiphy); + if (ret < 0) + lbs_pr_err("cannot register wiphy device\n"); + + ret = register_netdev(priv->dev); + if (ret) + lbs_pr_err("cannot register network device\n"); + + lbs_deb_leave_args(LBS_DEB_CFG80211, "ret %d", ret); + return ret; +} + + +void lbs_cfg_free(struct lbs_private *priv) +{ + struct wireless_dev *wdev = priv->wdev; + + lbs_deb_enter(LBS_DEB_CFG80211); + + if (!wdev) + return; + + if (wdev->wiphy) { + wiphy_unregister(wdev->wiphy); + wiphy_free(wdev->wiphy); + } + kfree(wdev); +} |
