aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/libertas/cfg.c
blob: 9d5d3ccf08c854376e9a22d3364019b37512baf5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
/*
 * Implement cfg80211 ("iw") support.
 *
 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
 * Holger Schurig <hs4233@mail.mn-solutions.de>
 *
 */

#include <linux/slab.h>
#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 net_device *netdev,
	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");

	priv->wiphy_registered = true;

	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 (priv->wiphy_registered)
		wiphy_unregister(wdev->wiphy);

	if (wdev->wiphy)
		wiphy_free(wdev->wiphy);

	kfree(wdev);
}