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Viewing changes to updates/wireless/iwlwifi/mac80211/origin/net/mac80211/regdomain.c

  • Committer: Bazaar Package Importer
  • Author(s): , Ben Collins
  • Date: 2008-04-02 06:59:04 UTC
  • Revision ID: james.westby@ubuntu.com-20080402065904-e5knh2gn2hms3xbb
Tags: 2.6.24-14.11
https://launchpad.net/bugs/200950
https://launchpad.net/bugs/176090
[Ben Collins]

* iwlwifi: Update to iwlwifi-1.2.25 and mac80211-10.0.4
  - LP: #200950
* ubuntu: Slight cleanups to module hiearchy and Makefiles
* mac80211: Enable LED triggers
* iwlwifi: Add LED trigger support (rx and tx only)
  - LP: #176090

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updates/wireless/iwlwifi/mac80211/origin/net/mac80211/regdomain.c
 
1
/*
 
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 * Copyright 2002-2005, Instant802 Networks, Inc.
 
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 * Copyright 2005-2006, Devicescape Software, Inc.
 
4
 *
 
5
 * This program is free software; you can redistribute it and/or modify
 
6
 * it under the terms of the GNU General Public License version 2 as
 
7
 * published by the Free Software Foundation.
 
8
 */
 
9
 
 
10
/*
 
11
 * This regulatory domain control implementation is known to be incomplete
 
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 * and confusing. mac80211 regulatory domain control will be significantly
 
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 * reworked in the not-too-distant future.
 
14
 *
 
15
 * For now, drivers wishing to control which channels are and aren't available
 
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 * are advised as follows:
 
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 *  - set the IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED flag
 
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 *  - continue to include *ALL* possible channels in the modes registered
 
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 *    through iwlwifi_iwlwifi_ieee80211_register_hwmode()
 
20
 *  - for each allowable ieee80211_channel structure registered in the above
 
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 *    call, set the flag member to some meaningful value such as
 
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 *    IEEE80211_CHAN_W_SCAN | IEEE80211_CHAN_W_ACTIVE_SCAN |
 
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 *    IEEE80211_CHAN_W_IBSS.
 
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 *  - leave flag as 0 for non-allowable channels
 
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 *
 
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 * The usual implementation is for a driver to read a device EEPROM to
 
27
 * determine which regulatory domain it should be operating under, then
 
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 * looking up the allowable channels in a driver-local table, then performing
 
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 * the above.
 
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 */
 
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#include <linux/module.h>
 
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#include <linux/netdevice.h>
 
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#include <net/mac80211.h>
 
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#include "ieee80211_i.h"
 
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static int ieee80211_regdom = 0x10; /* FCC */
 
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module_param(ieee80211_regdom, int, 0444);
 
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MODULE_PARM_DESC(ieee80211_regdom, "IEEE 802.11 regulatory domain; 64=MKK");
 
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/*
 
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 * If firmware is upgraded by the vendor, additional channels can be used based
 
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 * on the new Japanese regulatory rules. This is indicated by setting
 
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 * ieee80211_japan_5ghz module parameter to one when loading the 80211 kernel
 
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 * module.
 
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 */
 
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static int ieee80211_japan_5ghz /* = 0 */;
 
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module_param(ieee80211_japan_5ghz, int, 0444);
 
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MODULE_PARM_DESC(ieee80211_japan_5ghz, "Vendor-updated firmware for 5 GHz");
 
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struct ieee80211_channel_range {
 
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        short start_freq;
 
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        short end_freq;
 
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        unsigned char power_level;
 
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        unsigned char antenna_max;
 
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};
 
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static const struct ieee80211_channel_range ieee80211_fcc_channels[] = {
 
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        { 2412, 2462, 27, 6 } /* IEEE 802.11b/g, channels 1..11 */,
 
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        { 5180, 5240, 17, 6 } /* IEEE 802.11a, channels 36..48 */,
 
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        { 5260, 5320, 23, 6 } /* IEEE 802.11a, channels 52..64 */,
 
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        { 5745, 5825, 30, 6 } /* IEEE 802.11a, channels 149..165, outdoor */,
 
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        { 0 }
 
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};
 
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static const struct ieee80211_channel_range ieee80211_mkk_channels[] = {
 
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        { 2412, 2472, 20, 6 } /* IEEE 802.11b/g, channels 1..13 */,
 
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        { 5170, 5240, 20, 6 } /* IEEE 802.11a, channels 34..48 */,
 
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        { 5260, 5320, 20, 6 } /* IEEE 802.11a, channels 52..64 */,
 
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        { 0 }
 
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};
 
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static const struct ieee80211_channel_range *channel_range =
 
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        ieee80211_fcc_channels;
 
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static void ieee80211_unmask_channel(int mode, struct ieee80211_channel *chan)
 
80
{
 
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        int i;
 
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        chan->flag = 0;
 
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        if (ieee80211_regdom == 64 &&
 
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            (mode == MODE_ATHEROS_TURBO || mode == MODE_ATHEROS_TURBOG)) {
 
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                /* Do not allow Turbo modes in Japan. */
 
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                return;
 
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        }
 
90
 
 
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        for (i = 0; channel_range[i].start_freq; i++) {
 
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                const struct ieee80211_channel_range *r = &channel_range[i];
 
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                if (r->start_freq <= chan->freq && r->end_freq >= chan->freq) {
 
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                        if (ieee80211_regdom == 64 && !ieee80211_japan_5ghz &&
 
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                            chan->freq >= 5260 && chan->freq <= 5320) {
 
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                                /*
 
97
                                 * Skip new channels in Japan since the
 
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                                 * firmware was not marked having been upgraded
 
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                                 * by the vendor.
 
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                                 */
 
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                                continue;
 
102
                        }
 
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                        if (ieee80211_regdom == 0x10 &&
 
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                            (chan->freq == 5190 || chan->freq == 5210 ||
 
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                             chan->freq == 5230)) {
 
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                                    /* Skip MKK channels when in FCC domain. */
 
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                                    continue;
 
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                        }
 
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                        chan->flag |= IEEE80211_CHAN_W_SCAN |
 
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                                IEEE80211_CHAN_W_ACTIVE_SCAN |
 
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                                IEEE80211_CHAN_W_IBSS;
 
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                        chan->power_level = r->power_level;
 
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                        chan->antenna_max = r->antenna_max;
 
116
 
 
117
                        if (ieee80211_regdom == 64 &&
 
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                            (chan->freq == 5170 || chan->freq == 5190 ||
 
119
                             chan->freq == 5210 || chan->freq == 5230)) {
 
120
                                /*
 
121
                                 * New regulatory rules in Japan have backwards
 
122
                                 * compatibility with old channels in 5.15-5.25
 
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                                 * GHz band, but the station is not allowed to
 
124
                                 * use active scan on these old channels.
 
125
                                 */
 
126
                                chan->flag &= ~IEEE80211_CHAN_W_ACTIVE_SCAN;
 
127
                        }
 
128
 
 
129
                        if (ieee80211_regdom == 64 &&
 
130
                            (chan->freq == 5260 || chan->freq == 5280 ||
 
131
                             chan->freq == 5300 || chan->freq == 5320)) {
 
132
                                /*
 
133
                                 * IBSS is not allowed on 5.25-5.35 GHz band
 
134
                                 * due to radar detection requirements.
 
135
                                 */
 
136
                                chan->flag &= ~IEEE80211_CHAN_W_IBSS;
 
137
                        }
 
138
 
 
139
                        break;
 
140
                }
 
141
        }
 
142
}
 
143
 
 
144
 
 
145
void ieee80211_set_default_regdomain(struct ieee80211_hw_mode *mode)
 
146
{
 
147
        int c;
 
148
        for (c = 0; c < mode->num_channels; c++)
 
149
                ieee80211_unmask_channel(mode->mode, &mode->channels[c]);
 
150
}
 
151
 
 
152
 
 
153
void ieee80211_regdomain_init(void)
 
154
{
 
155
        if (ieee80211_regdom == 0x40)
 
156
                channel_range = ieee80211_mkk_channels;
 
157
}
 
158