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gerrit-public.fairphone.software / kernel / msm-5.4 / ff8ce5f67ddca709fe59e6173f89260f0fdc2b22 / . / drivers / net / wireless / brcm80211 / brcmsmac / channel.c
blob: 0efe88e25a9af1575c958dc70bf60d94fcea01ff [file] [log] [blame]
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]1/*
2 * Copyright (c) 2010 Broadcom Corporation
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17#include <linux/types.h>
18#include <net/mac80211.h>
19
20#include <defs.h>
21#include "pub.h"
22#include "phy/phy_hal.h"
23#include "main.h"
24#include "stf.h"
25#include "channel.h"
26
27/* QDB() macro takes a dB value and converts to a quarter dB value */
28#define QDB(n) ((n) * BRCMS_TXPWR_DB_FACTOR)
29
30#define LOCALE_CHAN_01_11 (1<<0)
31#define LOCALE_CHAN_12_13 (1<<1)
32#define LOCALE_CHAN_14 (1<<2)
33#define LOCALE_SET_5G_LOW_JP1 (1<<3) /* 34-48, step 2 */
34#define LOCALE_SET_5G_LOW_JP2 (1<<4) /* 34-46, step 4 */
35#define LOCALE_SET_5G_LOW1 (1<<5) /* 36-48, step 4 */
36#define LOCALE_SET_5G_LOW2 (1<<6) /* 52 */
37#define LOCALE_SET_5G_LOW3 (1<<7) /* 56-64, step 4 */
38#define LOCALE_SET_5G_MID1 (1<<8) /* 100-116, step 4 */
39#define LOCALE_SET_5G_MID2 (1<<9) /* 120-124, step 4 */
40#define LOCALE_SET_5G_MID3 (1<<10) /* 128 */
41#define LOCALE_SET_5G_HIGH1 (1<<11) /* 132-140, step 4 */
42#define LOCALE_SET_5G_HIGH2 (1<<12) /* 149-161, step 4 */
43#define LOCALE_SET_5G_HIGH3 (1<<13) /* 165 */
44#define LOCALE_CHAN_52_140_ALL (1<<14)
45#define LOCALE_SET_5G_HIGH4 (1<<15) /* 184-216 */
46
47#define LOCALE_CHAN_36_64 (LOCALE_SET_5G_LOW1 | \
48 LOCALE_SET_5G_LOW2 | \
49 LOCALE_SET_5G_LOW3)
50#define LOCALE_CHAN_52_64 (LOCALE_SET_5G_LOW2 | LOCALE_SET_5G_LOW3)
51#define LOCALE_CHAN_100_124 (LOCALE_SET_5G_MID1 | LOCALE_SET_5G_MID2)
52#define LOCALE_CHAN_100_140 (LOCALE_SET_5G_MID1 | LOCALE_SET_5G_MID2 | \
53 LOCALE_SET_5G_MID3 | LOCALE_SET_5G_HIGH1)
54#define LOCALE_CHAN_149_165 (LOCALE_SET_5G_HIGH2 | LOCALE_SET_5G_HIGH3)
55#define LOCALE_CHAN_184_216 LOCALE_SET_5G_HIGH4
56
57#define LOCALE_CHAN_01_14 (LOCALE_CHAN_01_11 | \
58 LOCALE_CHAN_12_13 | \
59 LOCALE_CHAN_14)
60
61#define LOCALE_RADAR_SET_NONE 0
62#define LOCALE_RADAR_SET_1 1
63
64#define LOCALE_RESTRICTED_NONE 0
65#define LOCALE_RESTRICTED_SET_2G_SHORT 1
66#define LOCALE_RESTRICTED_CHAN_165 2
67#define LOCALE_CHAN_ALL_5G 3
68#define LOCALE_RESTRICTED_JAPAN_LEGACY 4
69#define LOCALE_RESTRICTED_11D_2G 5
70#define LOCALE_RESTRICTED_11D_5G 6
71#define LOCALE_RESTRICTED_LOW_HI 7
72#define LOCALE_RESTRICTED_12_13_14 8
73
74#define LOCALE_2G_IDX_i 0
75#define LOCALE_5G_IDX_11 0
76#define LOCALE_MIMO_IDX_bn 0
77#define LOCALE_MIMO_IDX_11n 0
78
79/* max of BAND_5G_PWR_LVLS and 6 for 2.4 GHz */
80#define BRCMS_MAXPWR_TBL_SIZE 6
81/* max of BAND_5G_PWR_LVLS and 14 for 2.4 GHz */
82#define BRCMS_MAXPWR_MIMO_TBL_SIZE 14
83
84/* power level in group of 2.4GHz band channels:
85 * maxpwr[0] - CCK channels [1]
86 * maxpwr[1] - CCK channels [2-10]
87 * maxpwr[2] - CCK channels [11-14]
88 * maxpwr[3] - OFDM channels [1]
89 * maxpwr[4] - OFDM channels [2-10]
90 * maxpwr[5] - OFDM channels [11-14]
91 */
92
93/* maxpwr mapping to 5GHz band channels:
94 * maxpwr[0] - channels [34-48]
95 * maxpwr[1] - channels [52-60]
96 * maxpwr[2] - channels [62-64]
97 * maxpwr[3] - channels [100-140]
98 * maxpwr[4] - channels [149-165]
99 */
100#define BAND_5G_PWR_LVLS 5 /* 5 power levels for 5G */
101
102#define LC(id) LOCALE_MIMO_IDX_ ## id
103
104#define LC_2G(id) LOCALE_2G_IDX_ ## id
105
106#define LC_5G(id) LOCALE_5G_IDX_ ## id
107
108#define LOCALES(band2, band5, mimo2, mimo5) \
109 {LC_2G(band2), LC_5G(band5), LC(mimo2), LC(mimo5)}
110
111/* macro to get 2.4 GHz channel group index for tx power */
112#define CHANNEL_POWER_IDX_2G_CCK(c) (((c) < 2) ? 0 : (((c) < 11) ? 1 : 2))
113#define CHANNEL_POWER_IDX_2G_OFDM(c) (((c) < 2) ? 3 : (((c) < 11) ? 4 : 5))
114
115/* macro to get 5 GHz channel group index for tx power */
116#define CHANNEL_POWER_IDX_5G(c) (((c) < 52) ? 0 : \
117 (((c) < 62) ? 1 : \
118 (((c) < 100) ? 2 : \
119 (((c) < 149) ? 3 : 4))))
120
121#define ISDFS_EU(fl) (((fl) & BRCMS_DFS_EU) == BRCMS_DFS_EU)
122
123struct brcms_cm_band {
124 /* struct locale_info flags */
125 u8 locale_flags;
126 /* List of valid channels in the country */
127 struct brcms_chanvec valid_channels;
128 /* List of restricted use channels */
129 const struct brcms_chanvec *restricted_channels;
130 /* List of radar sensitive channels */
131 const struct brcms_chanvec *radar_channels;
132 u8 PAD[8];
133};
134
135 /* locale per-channel tx power limits for MIMO frames
136 * maxpwr arrays are index by channel for 2.4 GHz limits, and
137 * by sub-band for 5 GHz limits using CHANNEL_POWER_IDX_5G(channel)
138 */
139struct locale_mimo_info {
140 /* tx 20 MHz power limits, qdBm units */
141 s8 maxpwr20[BRCMS_MAXPWR_MIMO_TBL_SIZE];
142 /* tx 40 MHz power limits, qdBm units */
143 s8 maxpwr40[BRCMS_MAXPWR_MIMO_TBL_SIZE];
144 u8 flags;
145};
146
147/* Country names and abbreviations with locale defined from ISO 3166 */
148struct country_info {
149 const u8 locale_2G; /* 2.4G band locale */
150 const u8 locale_5G; /* 5G band locale */
151 const u8 locale_mimo_2G; /* 2.4G mimo info */
152 const u8 locale_mimo_5G; /* 5G mimo info */
153};
154
155struct brcms_cm_info {
156 struct brcms_pub *pub;
157 struct brcms_c_info *wlc;
158 char srom_ccode[BRCM_CNTRY_BUF_SZ]; /* Country Code in SROM */
159 uint srom_regrev; /* Regulatory Rev for the SROM ccode */
160 const struct country_info *country; /* current country def */
161 char ccode[BRCM_CNTRY_BUF_SZ]; /* current internal Country Code */
162 uint regrev; /* current Regulatory Revision */
163 char country_abbrev[BRCM_CNTRY_BUF_SZ]; /* current advertised ccode */
164 /* per-band state (one per phy/radio) */
165 struct brcms_cm_band bandstate[MAXBANDS];
166 /* quiet channels currently for radar sensitivity or 11h support */
167 /* channels on which we cannot transmit */
168 struct brcms_chanvec quiet_channels;
169};
170
171/* locale channel and power info. */
172struct locale_info {
173 u32 valid_channels;
174 /* List of radar sensitive channels */
175 u8 radar_channels;
176 /* List of channels used only if APs are detected */
177 u8 restricted_channels;
178 /* Max tx pwr in qdBm for each sub-band */
179 s8 maxpwr[BRCMS_MAXPWR_TBL_SIZE];
180 /* Country IE advertised max tx pwr in dBm per sub-band */
181 s8 pub_maxpwr[BAND_5G_PWR_LVLS];
182 u8 flags;
183};
184
185/* Regulatory Matrix Spreadsheet (CLM) MIMO v3.7.9 */
186
187/*
188 * Some common channel sets
189 */
190
191/* No channels */
192static const struct brcms_chanvec chanvec_none = {
193 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
194 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
195 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
196 0x00, 0x00, 0x00, 0x00}
197};
198
199/* All 2.4 GHz HW channels */
200static const struct brcms_chanvec chanvec_all_2G = {
201 {0xfe, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
202 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
203 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
204 0x00, 0x00, 0x00, 0x00}
205};
206
207/* All 5 GHz HW channels */
208static const struct brcms_chanvec chanvec_all_5G = {
209 {0x00, 0x00, 0x00, 0x00, 0x54, 0x55, 0x11, 0x11,
210 0x01, 0x00, 0x00, 0x00, 0x10, 0x11, 0x11, 0x11,
211 0x11, 0x11, 0x20, 0x22, 0x22, 0x00, 0x00, 0x11,
212 0x11, 0x11, 0x11, 0x01}
213};
214
215/*
216 * Radar channel sets
217 */
218
219/* Channels 52 - 64, 100 - 140 */
220static const struct brcms_chanvec radar_set1 = {
221 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x11, /* 52 - 60 */
222 0x01, 0x00, 0x00, 0x00, 0x10, 0x11, 0x11, 0x11, /* 64, 100 - 124 */
223 0x11, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, /* 128 - 140 */
224 0x00, 0x00, 0x00, 0x00}
225};
226
227/*
228 * Restricted channel sets
229 */
230
231/* Channels 34, 38, 42, 46 */
232static const struct brcms_chanvec restricted_set_japan_legacy = {
233 {0x00, 0x00, 0x00, 0x00, 0x44, 0x44, 0x00, 0x00,
234 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
235 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
236 0x00, 0x00, 0x00, 0x00}
237};
238
239/* Channels 12, 13 */
240static const struct brcms_chanvec restricted_set_2g_short = {
241 {0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
242 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
243 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
244 0x00, 0x00, 0x00, 0x00}
245};
246
247/* Channel 165 */
248static const struct brcms_chanvec restricted_chan_165 = {
249 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
251 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
252 0x00, 0x00, 0x00, 0x00}
253};
254
255/* Channels 36 - 48 & 149 - 165 */
256static const struct brcms_chanvec restricted_low_hi = {
257 {0x00, 0x00, 0x00, 0x00, 0x10, 0x11, 0x01, 0x00,
258 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
259 0x00, 0x00, 0x20, 0x22, 0x22, 0x00, 0x00, 0x00,
260 0x00, 0x00, 0x00, 0x00}
261};
262
263/* Channels 12 - 14 */
264static const struct brcms_chanvec restricted_set_12_13_14 = {
265 {0x00, 0x70, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
266 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
267 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
268 0x00, 0x00, 0x00, 0x00}
269};
270
271/* global memory to provide working buffer for expanded locale */
272
273static const struct brcms_chanvec *g_table_radar_set[] = {
274 &chanvec_none,
275 &radar_set1
276};
277
278static const struct brcms_chanvec *g_table_restricted_chan[] = {
279 &chanvec_none, /* restricted_set_none */
280 &restricted_set_2g_short,
281 &restricted_chan_165,
282 &chanvec_all_5G,
283 &restricted_set_japan_legacy,
284 &chanvec_all_2G, /* restricted_set_11d_2G */
285 &chanvec_all_5G, /* restricted_set_11d_5G */
286 &restricted_low_hi,
287 &restricted_set_12_13_14
288};
289
290static const struct brcms_chanvec locale_2g_01_11 = {
291 {0xfe, 0x0f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
292 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
293 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
294 0x00, 0x00, 0x00, 0x00}
295};
296
297static const struct brcms_chanvec locale_2g_12_13 = {
298 {0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
299 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
300 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
301 0x00, 0x00, 0x00, 0x00}
302};
303
304static const struct brcms_chanvec locale_2g_14 = {
305 {0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
306 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
307 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
308 0x00, 0x00, 0x00, 0x00}
309};
310
311static const struct brcms_chanvec locale_5g_LOW_JP1 = {
312 {0x00, 0x00, 0x00, 0x00, 0x54, 0x55, 0x01, 0x00,
313 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
314 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
315 0x00, 0x00, 0x00, 0x00}
316};
317
318static const struct brcms_chanvec locale_5g_LOW_JP2 = {
319 {0x00, 0x00, 0x00, 0x00, 0x44, 0x44, 0x00, 0x00,
320 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
321 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
322 0x00, 0x00, 0x00, 0x00}
323};
324
325static const struct brcms_chanvec locale_5g_LOW1 = {
326 {0x00, 0x00, 0x00, 0x00, 0x10, 0x11, 0x01, 0x00,
327 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
328 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
329 0x00, 0x00, 0x00, 0x00}
330};
331
332static const struct brcms_chanvec locale_5g_LOW2 = {
333 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00,
334 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
335 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
336 0x00, 0x00, 0x00, 0x00}
337};
338
339static const struct brcms_chanvec locale_5g_LOW3 = {
340 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11,
341 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
342 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
343 0x00, 0x00, 0x00, 0x00}
344};
345
346static const struct brcms_chanvec locale_5g_MID1 = {
347 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
348 0x00, 0x00, 0x00, 0x00, 0x10, 0x11, 0x11, 0x00,
349 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
350 0x00, 0x00, 0x00, 0x00}
351};
352
353static const struct brcms_chanvec locale_5g_MID2 = {
354 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
355 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11,
356 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
357 0x00, 0x00, 0x00, 0x00}
358};
359
360static const struct brcms_chanvec locale_5g_MID3 = {
361 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
362 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
363 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
364 0x00, 0x00, 0x00, 0x00}
365};
366
367static const struct brcms_chanvec locale_5g_HIGH1 = {
368 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
369 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
370 0x10, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
371 0x00, 0x00, 0x00, 0x00}
372};
373
374static const struct brcms_chanvec locale_5g_HIGH2 = {
375 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
376 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
377 0x00, 0x00, 0x20, 0x22, 0x02, 0x00, 0x00, 0x00,
378 0x00, 0x00, 0x00, 0x00}
379};
380
381static const struct brcms_chanvec locale_5g_HIGH3 = {
382 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
383 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
384 0x00, 0x00, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
385 0x00, 0x00, 0x00, 0x00}
386};
387
388static const struct brcms_chanvec locale_5g_52_140_ALL = {
389 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x11,
390 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, 0x11,
391 0x11, 0x11, 0x00, 0x00, 0x20, 0x00, 0x00, 0x00,
392 0x00, 0x00, 0x00, 0x00}
393};
394
395static const struct brcms_chanvec locale_5g_HIGH4 = {
396 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
397 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
398 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x11,
399 0x11, 0x11, 0x11, 0x11}
400};
401
402static const struct brcms_chanvec *g_table_locale_base[] = {
403 &locale_2g_01_11,
404 &locale_2g_12_13,
405 &locale_2g_14,
406 &locale_5g_LOW_JP1,
407 &locale_5g_LOW_JP2,
408 &locale_5g_LOW1,
409 &locale_5g_LOW2,
410 &locale_5g_LOW3,
411 &locale_5g_MID1,
412 &locale_5g_MID2,
413 &locale_5g_MID3,
414 &locale_5g_HIGH1,
415 &locale_5g_HIGH2,
416 &locale_5g_HIGH3,
417 &locale_5g_52_140_ALL,
418 &locale_5g_HIGH4
419};
420
421static void brcms_c_locale_add_channels(struct brcms_chanvec *target,
422 const struct brcms_chanvec *channels)
423{
424 u8 i;
425 for (i = 0; i < sizeof(struct brcms_chanvec); i++)
426 target->vec[i] |= channels->vec[i];
427}
428
429static void brcms_c_locale_get_channels(const struct locale_info *locale,
430 struct brcms_chanvec *channels)
431{
432 u8 i;
433
434 memset(channels, 0, sizeof(struct brcms_chanvec));
435
436 for (i = 0; i < ARRAY_SIZE(g_table_locale_base); i++) {
437 if (locale->valid_channels & (1 << i))
438 brcms_c_locale_add_channels(channels,
439 g_table_locale_base[i]);
440 }
441}
442
443/*
444 * Locale Definitions - 2.4 GHz
445 */
446static const struct locale_info locale_i = { /* locale i. channel 1 - 13 */
447 LOCALE_CHAN_01_11 | LOCALE_CHAN_12_13,
448 LOCALE_RADAR_SET_NONE,
449 LOCALE_RESTRICTED_SET_2G_SHORT,
450 {QDB(19), QDB(19), QDB(19),
451 QDB(19), QDB(19), QDB(19)},
452 {20, 20, 20, 0},
453 BRCMS_EIRP
454};
455
456/*
457 * Locale Definitions - 5 GHz
458 */
459static const struct locale_info locale_11 = {
460 /* locale 11. channel 36 - 48, 52 - 64, 100 - 140, 149 - 165 */
461 LOCALE_CHAN_36_64 | LOCALE_CHAN_100_140 | LOCALE_CHAN_149_165,
462 LOCALE_RADAR_SET_1,
463 LOCALE_RESTRICTED_NONE,
464 {QDB(21), QDB(21), QDB(21), QDB(21), QDB(21)},
465 {23, 23, 23, 30, 30},
466 BRCMS_EIRP | BRCMS_DFS_EU
467};
468
469static const struct locale_info *g_locale_2g_table[] = {
470 &locale_i
471};
472
473static const struct locale_info *g_locale_5g_table[] = {
474 &locale_11
475};
476
477/*
478 * MIMO Locale Definitions - 2.4 GHz
479 */
480static const struct locale_mimo_info locale_bn = {
481 {QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
482 QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
483 QDB(13), QDB(13), QDB(13)},
484 {0, 0, QDB(13), QDB(13), QDB(13),
485 QDB(13), QDB(13), QDB(13), QDB(13), QDB(13),
486 QDB(13), 0, 0},
487 0
488};
489
490static const struct locale_mimo_info *g_mimo_2g_table[] = {
491 &locale_bn
492};
493
494/*
495 * MIMO Locale Definitions - 5 GHz
496 */
497static const struct locale_mimo_info locale_11n = {
498 { /* 12.5 dBm */ 50, 50, 50, QDB(15), QDB(15)},
499 {QDB(14), QDB(15), QDB(15), QDB(15), QDB(15)},
500 0
501};
502
503static const struct locale_mimo_info *g_mimo_5g_table[] = {
504 &locale_11n
505};
506
507static const struct {
508 char abbrev[BRCM_CNTRY_BUF_SZ]; /* country abbreviation */
509 struct country_info country;
510} cntry_locales[] = {
511 {
512 "X2", LOCALES(i, 11, bn, 11n)}, /* Worldwide RoW 2 */
513};
514
515#ifdef SUPPORT_40MHZ
516/* 20MHz channel info for 40MHz pairing support */
517struct chan20_info {
518 u8 sb;
519 u8 adj_sbs;
520};
521
522/* indicates adjacent channels that are allowed for a 40 Mhz channel and
523 * those that permitted by the HT
524 */
525struct chan20_info chan20_info[] = {
526 /* 11b/11g */
527/* 0 */ {1, (CH_UPPER_SB | CH_EWA_VALID)},
528/* 1 */ {2, (CH_UPPER_SB | CH_EWA_VALID)},
529/* 2 */ {3, (CH_UPPER_SB | CH_EWA_VALID)},
530/* 3 */ {4, (CH_UPPER_SB | CH_EWA_VALID)},
531/* 4 */ {5, (CH_UPPER_SB | CH_LOWER_SB | CH_EWA_VALID)},
532/* 5 */ {6, (CH_UPPER_SB | CH_LOWER_SB | CH_EWA_VALID)},
533/* 6 */ {7, (CH_UPPER_SB | CH_LOWER_SB | CH_EWA_VALID)},
534/* 7 */ {8, (CH_UPPER_SB | CH_LOWER_SB | CH_EWA_VALID)},
535/* 8 */ {9, (CH_UPPER_SB | CH_LOWER_SB | CH_EWA_VALID)},
536/* 9 */ {10, (CH_LOWER_SB | CH_EWA_VALID)},
537/* 10 */ {11, (CH_LOWER_SB | CH_EWA_VALID)},
538/* 11 */ {12, (CH_LOWER_SB)},
539/* 12 */ {13, (CH_LOWER_SB)},
540/* 13 */ {14, (CH_LOWER_SB)},
541
542/* 11a japan high */
543/* 14 */ {34, (CH_UPPER_SB)},
544/* 15 */ {38, (CH_LOWER_SB)},
545/* 16 */ {42, (CH_LOWER_SB)},
546/* 17 */ {46, (CH_LOWER_SB)},
547
548/* 11a usa low */
549/* 18 */ {36, (CH_UPPER_SB | CH_EWA_VALID)},
550/* 19 */ {40, (CH_LOWER_SB | CH_EWA_VALID)},
551/* 20 */ {44, (CH_UPPER_SB | CH_EWA_VALID)},
552/* 21 */ {48, (CH_LOWER_SB | CH_EWA_VALID)},
553/* 22 */ {52, (CH_UPPER_SB | CH_EWA_VALID)},
554/* 23 */ {56, (CH_LOWER_SB | CH_EWA_VALID)},
555/* 24 */ {60, (CH_UPPER_SB | CH_EWA_VALID)},
556/* 25 */ {64, (CH_LOWER_SB | CH_EWA_VALID)},
557
558/* 11a Europe */
559/* 26 */ {100, (CH_UPPER_SB | CH_EWA_VALID)},
560/* 27 */ {104, (CH_LOWER_SB | CH_EWA_VALID)},
561/* 28 */ {108, (CH_UPPER_SB | CH_EWA_VALID)},
562/* 29 */ {112, (CH_LOWER_SB | CH_EWA_VALID)},
563/* 30 */ {116, (CH_UPPER_SB | CH_EWA_VALID)},
564/* 31 */ {120, (CH_LOWER_SB | CH_EWA_VALID)},
565/* 32 */ {124, (CH_UPPER_SB | CH_EWA_VALID)},
566/* 33 */ {128, (CH_LOWER_SB | CH_EWA_VALID)},
567/* 34 */ {132, (CH_UPPER_SB | CH_EWA_VALID)},
568/* 35 */ {136, (CH_LOWER_SB | CH_EWA_VALID)},
569/* 36 */ {140, (CH_LOWER_SB)},
570
571/* 11a usa high, ref5 only */
572/* The 0x80 bit in pdiv means these are REF5, other entries are REF20 */
573/* 37 */ {149, (CH_UPPER_SB | CH_EWA_VALID)},
574/* 38 */ {153, (CH_LOWER_SB | CH_EWA_VALID)},
575/* 39 */ {157, (CH_UPPER_SB | CH_EWA_VALID)},
576/* 40 */ {161, (CH_LOWER_SB | CH_EWA_VALID)},
577/* 41 */ {165, (CH_LOWER_SB)},
578
579/* 11a japan */
580/* 42 */ {184, (CH_UPPER_SB)},
581/* 43 */ {188, (CH_LOWER_SB)},
582/* 44 */ {192, (CH_UPPER_SB)},
583/* 45 */ {196, (CH_LOWER_SB)},
584/* 46 */ {200, (CH_UPPER_SB)},
585/* 47 */ {204, (CH_LOWER_SB)},
586/* 48 */ {208, (CH_UPPER_SB)},
587/* 49 */ {212, (CH_LOWER_SB)},
588/* 50 */ {216, (CH_LOWER_SB)}
589};
590#endif /* SUPPORT_40MHZ */
591
592static const struct locale_info *brcms_c_get_locale_2g(u8 locale_idx)
593{
594 if (locale_idx >= ARRAY_SIZE(g_locale_2g_table))
595 return NULL; /* error condition */
596
597 return g_locale_2g_table[locale_idx];
598}
599
600static const struct locale_info *brcms_c_get_locale_5g(u8 locale_idx)
601{
602 if (locale_idx >= ARRAY_SIZE(g_locale_5g_table))
603 return NULL; /* error condition */
604
605 return g_locale_5g_table[locale_idx];
606}
607
608static const struct locale_mimo_info *brcms_c_get_mimo_2g(u8 locale_idx)
609{
610 if (locale_idx >= ARRAY_SIZE(g_mimo_2g_table))
611 return NULL;
612
613 return g_mimo_2g_table[locale_idx];
614}
615
616static const struct locale_mimo_info *brcms_c_get_mimo_5g(u8 locale_idx)
617{
618 if (locale_idx >= ARRAY_SIZE(g_mimo_5g_table))
619 return NULL;
620
621 return g_mimo_5g_table[locale_idx];
622}
623
624static int
625brcms_c_country_aggregate_map(struct brcms_cm_info *wlc_cm, const char *ccode,
626 char *mapped_ccode, uint *mapped_regrev)
627{
628 return false;
629}
630
Arend van Spriel94a2ca32012-04-11 11:52:50 +0200[diff] [blame]631/*
632 * Indicates whether the country provided is valid to pass
633 * to cfg80211 or not.
634 *
635 * returns true if valid; false if not.
636 */
637static bool brcms_c_country_valid(const char *ccode)
638{
639 /*
640 * only allow ascii alpha uppercase for the first 2
641 * chars.
642 */
643 if (!((0x80 & ccode[0]) == 0 && ccode[0] >= 0x41 && ccode[0] <= 0x5A &&
644 (0x80 & ccode[1]) == 0 && ccode[1] >= 0x41 && ccode[1] <= 0x5A &&
645 ccode[2] == '\0'))
646 return false;
647
648 /*
649 * do not match ISO 3166-1 user assigned country codes
650 * that may be in the driver table
651 */
652 if (!strcmp("AA", ccode) || /* AA */
653 !strcmp("ZZ", ccode) || /* ZZ */
654 ccode[0] == 'X' || /* XA - XZ */
655 (ccode[0] == 'Q' && /* QM - QZ */
656 (ccode[1] >= 'M' && ccode[1] <= 'Z')))
657 return false;
658
659 if (!strcmp("NA", ccode))
660 return false;
661
662 return true;
663}
664
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]665/* Lookup a country info structure from a null terminated country
666 * abbreviation and regrev directly with no translation.
667 */
668static const struct country_info *
669brcms_c_country_lookup_direct(const char *ccode, uint regrev)
670{
671 uint size, i;
672
673 /* Should just return 0 for single locale driver. */
674 /* Keep it this way in case we add more locales. (for now anyway) */
675
676 /*
677 * all other country def arrays are for regrev == 0, so if
678 * regrev is non-zero, fail
679 */
680 if (regrev > 0)
681 return NULL;
682
683 /* find matched table entry from country code */
684 size = ARRAY_SIZE(cntry_locales);
685 for (i = 0; i < size; i++) {
686 if (strcmp(ccode, cntry_locales[i].abbrev) == 0)
687 return &cntry_locales[i].country;
688 }
689 return NULL;
690}
691
692static const struct country_info *
693brcms_c_countrycode_map(struct brcms_cm_info *wlc_cm, const char *ccode,
694 char *mapped_ccode, uint *mapped_regrev)
695{
696 struct brcms_c_info *wlc = wlc_cm->wlc;
697 const struct country_info *country;
698 uint srom_regrev = wlc_cm->srom_regrev;
699 const char *srom_ccode = wlc_cm->srom_ccode;
700 int mapped;
701
702 /* check for currently supported ccode size */
703 if (strlen(ccode) > (BRCM_CNTRY_BUF_SZ - 1)) {
704 wiphy_err(wlc->wiphy, "wl%d: %s: ccode \"%s\" too long for "
705 "match\n", wlc->pub->unit, __func__, ccode);
706 return NULL;
707 }
708
709 /* default mapping is the given ccode and regrev 0 */
710 strncpy(mapped_ccode, ccode, BRCM_CNTRY_BUF_SZ);
711 *mapped_regrev = 0;
712
713 /* If the desired country code matches the srom country code,
714 * then the mapped country is the srom regulatory rev.
715 * Otherwise look for an aggregate mapping.
716 */
717 if (!strcmp(srom_ccode, ccode)) {
718 *mapped_regrev = srom_regrev;
719 mapped = 0;
720 wiphy_err(wlc->wiphy, "srom_code == ccode %s\n", __func__);
721 } else {
722 mapped =
723 brcms_c_country_aggregate_map(wlc_cm, ccode, mapped_ccode,
724 mapped_regrev);
725 }
726
727 /* find the matching built-in country definition */
728 country = brcms_c_country_lookup_direct(mapped_ccode, *mapped_regrev);
729
730 /* if there is not an exact rev match, default to rev zero */
731 if (country == NULL && *mapped_regrev != 0) {
732 *mapped_regrev = 0;
733 country =
734 brcms_c_country_lookup_direct(mapped_ccode, *mapped_regrev);
735 }
736
737 return country;
738}
739
740/* Lookup a country info structure from a null terminated country code
741 * The lookup is case sensitive.
742 */
743static const struct country_info *
744brcms_c_country_lookup(struct brcms_c_info *wlc, const char *ccode)
745{
746 const struct country_info *country;
747 char mapped_ccode[BRCM_CNTRY_BUF_SZ];
748 uint mapped_regrev;
749
750 /*
751 * map the country code to a built-in country code, regrev, and
752 * country_info struct
753 */
754 country = brcms_c_countrycode_map(wlc->cmi, ccode, mapped_ccode,
755 &mapped_regrev);
756
757 return country;
758}
759
760/*
761 * reset the quiet channels vector to the union
762 * of the restricted and radar channel sets
763 */
764static void brcms_c_quiet_channels_reset(struct brcms_cm_info *wlc_cm)
765{
766 struct brcms_c_info *wlc = wlc_cm->wlc;
767 uint i, j;
768 struct brcms_band *band;
769 const struct brcms_chanvec *chanvec;
770
771 memset(&wlc_cm->quiet_channels, 0, sizeof(struct brcms_chanvec));
772
773 band = wlc->band;
774 for (i = 0; i < wlc->pub->_nbands;
775 i++, band = wlc->bandstate[OTHERBANDUNIT(wlc)]) {
776
777 /* initialize quiet channels for restricted channels */
778 chanvec = wlc_cm->bandstate[band->bandunit].restricted_channels;
779 for (j = 0; j < sizeof(struct brcms_chanvec); j++)
780 wlc_cm->quiet_channels.vec[j] |= chanvec->vec[j];
781
782 }
783}
784
785/* Is the channel valid for the current locale and current band? */
786static bool brcms_c_valid_channel20(struct brcms_cm_info *wlc_cm, uint val)
787{
788 struct brcms_c_info *wlc = wlc_cm->wlc;
789
790 return ((val < MAXCHANNEL) &&
791 isset(wlc_cm->bandstate[wlc->band->bandunit].valid_channels.vec,
792 val));
793}
794
795/* Is the channel valid for the current locale and specified band? */
796static bool brcms_c_valid_channel20_in_band(struct brcms_cm_info *wlc_cm,
797 uint bandunit, uint val)
798{
799 return ((val < MAXCHANNEL)
800 && isset(wlc_cm->bandstate[bandunit].valid_channels.vec, val));
801}
802
803/* Is the channel valid for the current locale? (but don't consider channels not
804 * available due to bandlocking)
805 */
806static bool brcms_c_valid_channel20_db(struct brcms_cm_info *wlc_cm, uint val)
807{
808 struct brcms_c_info *wlc = wlc_cm->wlc;
809
810 return brcms_c_valid_channel20(wlc->cmi, val) ||
811 (!wlc->bandlocked
812 && brcms_c_valid_channel20_in_band(wlc->cmi,
813 OTHERBANDUNIT(wlc), val));
814}
815
816/* JP, J1 - J10 are Japan ccodes */
817static bool brcms_c_japan_ccode(const char *ccode)
818{
819 return (ccode[0] == 'J' &&
820 (ccode[1] == 'P' || (ccode[1] >= '1' && ccode[1] <= '9')));
821}
822
823/* Returns true if currently set country is Japan or variant */
824static bool brcms_c_japan(struct brcms_c_info *wlc)
825{
826 return brcms_c_japan_ccode(wlc->cmi->country_abbrev);
827}
828
829static void
830brcms_c_channel_min_txpower_limits_with_local_constraint(
831 struct brcms_cm_info *wlc_cm, struct txpwr_limits *txpwr,
832 u8 local_constraint_qdbm)
833{
834 int j;
835
836 /* CCK Rates */
837 for (j = 0; j < WL_TX_POWER_CCK_NUM; j++)
838 txpwr->cck[j] = min(txpwr->cck[j], local_constraint_qdbm);
839
840 /* 20 MHz Legacy OFDM SISO */
841 for (j = 0; j < WL_TX_POWER_OFDM_NUM; j++)
842 txpwr->ofdm[j] = min(txpwr->ofdm[j], local_constraint_qdbm);
843
844 /* 20 MHz Legacy OFDM CDD */
845 for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
846 txpwr->ofdm_cdd[j] =
847 min(txpwr->ofdm_cdd[j], local_constraint_qdbm);
848
849 /* 40 MHz Legacy OFDM SISO */
850 for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
851 txpwr->ofdm_40_siso[j] =
852 min(txpwr->ofdm_40_siso[j], local_constraint_qdbm);
853
854 /* 40 MHz Legacy OFDM CDD */
855 for (j = 0; j < BRCMS_NUM_RATES_OFDM; j++)
856 txpwr->ofdm_40_cdd[j] =
857 min(txpwr->ofdm_40_cdd[j], local_constraint_qdbm);
858
859 /* 20MHz MCS 0-7 SISO */
860 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
861 txpwr->mcs_20_siso[j] =
862 min(txpwr->mcs_20_siso[j], local_constraint_qdbm);
863
864 /* 20MHz MCS 0-7 CDD */
865 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
866 txpwr->mcs_20_cdd[j] =
867 min(txpwr->mcs_20_cdd[j], local_constraint_qdbm);
868
869 /* 20MHz MCS 0-7 STBC */
870 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
871 txpwr->mcs_20_stbc[j] =
872 min(txpwr->mcs_20_stbc[j], local_constraint_qdbm);
873
874 /* 20MHz MCS 8-15 MIMO */
875 for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++)
876 txpwr->mcs_20_mimo[j] =
877 min(txpwr->mcs_20_mimo[j], local_constraint_qdbm);
878
879 /* 40MHz MCS 0-7 SISO */
880 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
881 txpwr->mcs_40_siso[j] =
882 min(txpwr->mcs_40_siso[j], local_constraint_qdbm);
883
884 /* 40MHz MCS 0-7 CDD */
885 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
886 txpwr->mcs_40_cdd[j] =
887 min(txpwr->mcs_40_cdd[j], local_constraint_qdbm);
888
889 /* 40MHz MCS 0-7 STBC */
890 for (j = 0; j < BRCMS_NUM_RATES_MCS_1_STREAM; j++)
891 txpwr->mcs_40_stbc[j] =
892 min(txpwr->mcs_40_stbc[j], local_constraint_qdbm);
893
894 /* 40MHz MCS 8-15 MIMO */
895 for (j = 0; j < BRCMS_NUM_RATES_MCS_2_STREAM; j++)
896 txpwr->mcs_40_mimo[j] =
897 min(txpwr->mcs_40_mimo[j], local_constraint_qdbm);
898
899 /* 40MHz MCS 32 */
900 txpwr->mcs32 = min(txpwr->mcs32, local_constraint_qdbm);
901
902}
903
904/* Update the radio state (enable/disable) and tx power targets
905 * based on a new set of channel/regulatory information
906 */
907static void brcms_c_channels_commit(struct brcms_cm_info *wlc_cm)
908{
909 struct brcms_c_info *wlc = wlc_cm->wlc;
910 uint chan;
911 struct txpwr_limits txpwr;
912
913 /* search for the existence of any valid channel */
914 for (chan = 0; chan < MAXCHANNEL; chan++) {
915 if (brcms_c_valid_channel20_db(wlc->cmi, chan))
916 break;
917 }
918 if (chan == MAXCHANNEL)
919 chan = INVCHANNEL;
920
921 /*
922 * based on the channel search above, set or
923 * clear WL_RADIO_COUNTRY_DISABLE.
924 */
925 if (chan == INVCHANNEL) {
926 /*
927 * country/locale with no valid channels, set
928 * the radio disable bit
929 */
930 mboolset(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
931 wiphy_err(wlc->wiphy, "wl%d: %s: no valid channel for \"%s\" "
932 "nbands %d bandlocked %d\n", wlc->pub->unit,
933 __func__, wlc_cm->country_abbrev, wlc->pub->_nbands,
934 wlc->bandlocked);
935 } else if (mboolisset(wlc->pub->radio_disabled,
936 WL_RADIO_COUNTRY_DISABLE)) {
937 /*
938 * country/locale with valid channel, clear
939 * the radio disable bit
940 */
941 mboolclr(wlc->pub->radio_disabled, WL_RADIO_COUNTRY_DISABLE);
942 }
943
944 /*
945 * Now that the country abbreviation is set, if the radio supports 2G,
946 * then set channel 14 restrictions based on the new locale.
947 */
948 if (wlc->pub->_nbands > 1 || wlc->band->bandtype == BRCM_BAND_2G)
949 wlc_phy_chanspec_ch14_widefilter_set(wlc->band->pi,
950 brcms_c_japan(wlc) ? true :
951 false);
952
953 if (wlc->pub->up && chan != INVCHANNEL) {
954 brcms_c_channel_reg_limits(wlc_cm, wlc->chanspec, &txpwr);
955 brcms_c_channel_min_txpower_limits_with_local_constraint(wlc_cm,
956 &txpwr, BRCMS_TXPWR_MAX);
957 wlc_phy_txpower_limit_set(wlc->band->pi, &txpwr, wlc->chanspec);
958 }
959}
960
961static int
962brcms_c_channels_init(struct brcms_cm_info *wlc_cm,
963 const struct country_info *country)
964{
965 struct brcms_c_info *wlc = wlc_cm->wlc;
966 uint i, j;
967 struct brcms_band *band;
968 const struct locale_info *li;
969 struct brcms_chanvec sup_chan;
970 const struct locale_mimo_info *li_mimo;
971
972 band = wlc->band;
973 for (i = 0; i < wlc->pub->_nbands;
974 i++, band = wlc->bandstate[OTHERBANDUNIT(wlc)]) {
975
976 li = (band->bandtype == BRCM_BAND_5G) ?
977 brcms_c_get_locale_5g(country->locale_5G) :
978 brcms_c_get_locale_2g(country->locale_2G);
979 wlc_cm->bandstate[band->bandunit].locale_flags = li->flags;
980 li_mimo = (band->bandtype == BRCM_BAND_5G) ?
981 brcms_c_get_mimo_5g(country->locale_mimo_5G) :
982 brcms_c_get_mimo_2g(country->locale_mimo_2G);
983
984 /* merge the mimo non-mimo locale flags */
985 wlc_cm->bandstate[band->bandunit].locale_flags |=
986 li_mimo->flags;
987
988 wlc_cm->bandstate[band->bandunit].restricted_channels =
989 g_table_restricted_chan[li->restricted_channels];
990 wlc_cm->bandstate[band->bandunit].radar_channels =
991 g_table_radar_set[li->radar_channels];
992
993 /*
994 * set the channel availability, masking out the channels
995 * that may not be supported on this phy.
996 */
997 wlc_phy_chanspec_band_validch(band->pi, band->bandtype,
998 &sup_chan);
999 brcms_c_locale_get_channels(li,
1000 &wlc_cm->bandstate[band->bandunit].
1001 valid_channels);
1002 for (j = 0; j < sizeof(struct brcms_chanvec); j++)
1003 wlc_cm->bandstate[band->bandunit].valid_channels.
1004 vec[j] &= sup_chan.vec[j];
1005 }
1006
1007 brcms_c_quiet_channels_reset(wlc_cm);
1008 brcms_c_channels_commit(wlc_cm);
1009
1010 return 0;
1011}
1012
1013/*
1014 * set the driver's current country and regulatory information
1015 * using a country code as the source. Look up built in country
1016 * information found with the country code.
1017 */
1018static void
1019brcms_c_set_country_common(struct brcms_cm_info *wlc_cm,
1020 const char *country_abbrev,
1021 const char *ccode, uint regrev,
1022 const struct country_info *country)
1023{
1024 const struct locale_info *locale;
1025 struct brcms_c_info *wlc = wlc_cm->wlc;
1026 char prev_country_abbrev[BRCM_CNTRY_BUF_SZ];
1027
1028 /* save current country state */
1029 wlc_cm->country = country;
1030
1031 memset(&prev_country_abbrev, 0, BRCM_CNTRY_BUF_SZ);
1032 strncpy(prev_country_abbrev, wlc_cm->country_abbrev,
1033 BRCM_CNTRY_BUF_SZ - 1);
1034
1035 strncpy(wlc_cm->country_abbrev, country_abbrev, BRCM_CNTRY_BUF_SZ - 1);
1036 strncpy(wlc_cm->ccode, ccode, BRCM_CNTRY_BUF_SZ - 1);
1037 wlc_cm->regrev = regrev;
1038
1039 if ((wlc->pub->_n_enab & SUPPORT_11N) !=
1040 wlc->protection->nmode_user)
1041 brcms_c_set_nmode(wlc);
1042
1043 brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_2G_INDEX]);
1044 brcms_c_stf_ss_update(wlc, wlc->bandstate[BAND_5G_INDEX]);
1045 /* set or restore gmode as required by regulatory */
1046 locale = brcms_c_get_locale_2g(country->locale_2G);
1047 if (locale && (locale->flags & BRCMS_NO_OFDM))
1048 brcms_c_set_gmode(wlc, GMODE_LEGACY_B, false);
1049 else
1050 brcms_c_set_gmode(wlc, wlc->protection->gmode_user, false);
1051
1052 brcms_c_channels_init(wlc_cm, country);
1053
1054 return;
1055}
1056
1057static int
1058brcms_c_set_countrycode_rev(struct brcms_cm_info *wlc_cm,
1059 const char *country_abbrev,
1060 const char *ccode, int regrev)
1061{
1062 const struct country_info *country;
1063 char mapped_ccode[BRCM_CNTRY_BUF_SZ];
1064 uint mapped_regrev;
1065
1066 /* if regrev is -1, lookup the mapped country code,
1067 * otherwise use the ccode and regrev directly
1068 */
1069 if (regrev == -1) {
1070 /*
1071 * map the country code to a built-in country
1072 * code, regrev, and country_info
1073 */
1074 country =
1075 brcms_c_countrycode_map(wlc_cm, ccode, mapped_ccode,
1076 &mapped_regrev);
1077 } else {
1078 /* find the matching built-in country definition */
1079 country = brcms_c_country_lookup_direct(ccode, regrev);
1080 strncpy(mapped_ccode, ccode, BRCM_CNTRY_BUF_SZ);
1081 mapped_regrev = regrev;
1082 }
1083
1084 if (country == NULL)
1085 return -EINVAL;
1086
1087 /* set the driver state for the country */
1088 brcms_c_set_country_common(wlc_cm, country_abbrev, mapped_ccode,
1089 mapped_regrev, country);
1090
1091 return 0;
1092}
1093
1094/*
1095 * set the driver's current country and regulatory information using
1096 * a country code as the source. Lookup built in country information
1097 * found with the country code.
1098 */
1099static int
1100brcms_c_set_countrycode(struct brcms_cm_info *wlc_cm, const char *ccode)
1101{
1102 char country_abbrev[BRCM_CNTRY_BUF_SZ];
1103 strncpy(country_abbrev, ccode, BRCM_CNTRY_BUF_SZ);
1104 return brcms_c_set_countrycode_rev(wlc_cm, country_abbrev, ccode, -1);
1105}
1106
1107struct brcms_cm_info *brcms_c_channel_mgr_attach(struct brcms_c_info *wlc)
1108{
1109 struct brcms_cm_info *wlc_cm;
1110 char country_abbrev[BRCM_CNTRY_BUF_SZ];
1111 const struct country_info *country;
1112 struct brcms_pub *pub = wlc->pub;
1113 char *ccode;
1114
1115 BCMMSG(wlc->wiphy, "wl%d\n", wlc->pub->unit);
1116
1117 wlc_cm = kzalloc(sizeof(struct brcms_cm_info), GFP_ATOMIC);
1118 if (wlc_cm == NULL)
1119 return NULL;
1120 wlc_cm->pub = pub;
1121 wlc_cm->wlc = wlc;
1122 wlc->cmi = wlc_cm;
1123
1124 /* store the country code for passing up as a regulatory hint */
1125 ccode = getvar(wlc->hw->sih, BRCMS_SROM_CCODE);
Arend van Spriel94a2ca32012-04-11 11:52:50 +0200[diff] [blame]1126 if (ccode && brcms_c_country_valid(ccode))
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]1127 strncpy(wlc->pub->srom_ccode, ccode, BRCM_CNTRY_BUF_SZ - 1);
1128
1129 /*
1130 * internal country information which must match
1131 * regulatory constraints in firmware
1132 */
1133 memset(country_abbrev, 0, BRCM_CNTRY_BUF_SZ);
1134 strncpy(country_abbrev, "X2", sizeof(country_abbrev) - 1);
1135 country = brcms_c_country_lookup(wlc, country_abbrev);
1136
1137 /* save default country for exiting 11d regulatory mode */
1138 strncpy(wlc->country_default, country_abbrev, BRCM_CNTRY_BUF_SZ - 1);
1139
1140 /* initialize autocountry_default to driver default */
1141 strncpy(wlc->autocountry_default, "X2", BRCM_CNTRY_BUF_SZ - 1);
1142
1143 brcms_c_set_countrycode(wlc_cm, country_abbrev);
1144
1145 return wlc_cm;
1146}
1147
1148void brcms_c_channel_mgr_detach(struct brcms_cm_info *wlc_cm)
1149{
1150 kfree(wlc_cm);
1151}
1152
1153u8
1154brcms_c_channel_locale_flags_in_band(struct brcms_cm_info *wlc_cm,
1155 uint bandunit)
1156{
1157 return wlc_cm->bandstate[bandunit].locale_flags;
1158}
1159
1160static bool
1161brcms_c_quiet_chanspec(struct brcms_cm_info *wlc_cm, u16 chspec)
1162{
1163 return (wlc_cm->wlc->pub->_n_enab & SUPPORT_11N) &&
1164 CHSPEC_IS40(chspec) ?
1165 (isset(wlc_cm->quiet_channels.vec,
1166 lower_20_sb(CHSPEC_CHANNEL(chspec))) ||
1167 isset(wlc_cm->quiet_channels.vec,
1168 upper_20_sb(CHSPEC_CHANNEL(chspec)))) :
1169 isset(wlc_cm->quiet_channels.vec, CHSPEC_CHANNEL(chspec));
1170}
1171
1172void
1173brcms_c_channel_set_chanspec(struct brcms_cm_info *wlc_cm, u16 chanspec,
1174 u8 local_constraint_qdbm)
1175{
1176 struct brcms_c_info *wlc = wlc_cm->wlc;
1177 struct txpwr_limits txpwr;
1178
1179 brcms_c_channel_reg_limits(wlc_cm, chanspec, &txpwr);
1180
1181 brcms_c_channel_min_txpower_limits_with_local_constraint(
1182 wlc_cm, &txpwr, local_constraint_qdbm
1183 );
1184
1185 brcms_b_set_chanspec(wlc->hw, chanspec,
1186 (brcms_c_quiet_chanspec(wlc_cm, chanspec) != 0),
1187 &txpwr);
1188}
1189
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]1190void
1191brcms_c_channel_reg_limits(struct brcms_cm_info *wlc_cm, u16 chanspec,
1192 struct txpwr_limits *txpwr)
1193{
1194 struct brcms_c_info *wlc = wlc_cm->wlc;
1195 uint i;
1196 uint chan;
1197 int maxpwr;
1198 int delta;
1199 const struct country_info *country;
1200 struct brcms_band *band;
1201 const struct locale_info *li;
1202 int conducted_max = BRCMS_TXPWR_MAX;
1203 int conducted_ofdm_max = BRCMS_TXPWR_MAX;
1204 const struct locale_mimo_info *li_mimo;
1205 int maxpwr20, maxpwr40;
1206 int maxpwr_idx;
1207 uint j;
1208
1209 memset(txpwr, 0, sizeof(struct txpwr_limits));
1210
1211 if (!brcms_c_valid_chanspec_db(wlc_cm, chanspec)) {
1212 country = brcms_c_country_lookup(wlc, wlc->autocountry_default);
1213 if (country == NULL)
1214 return;
1215 } else {
1216 country = wlc_cm->country;
1217 }
1218
1219 chan = CHSPEC_CHANNEL(chanspec);
1220 band = wlc->bandstate[chspec_bandunit(chanspec)];
1221 li = (band->bandtype == BRCM_BAND_5G) ?
1222 brcms_c_get_locale_5g(country->locale_5G) :
1223 brcms_c_get_locale_2g(country->locale_2G);
1224
1225 li_mimo = (band->bandtype == BRCM_BAND_5G) ?
1226 brcms_c_get_mimo_5g(country->locale_mimo_5G) :
1227 brcms_c_get_mimo_2g(country->locale_mimo_2G);
1228
1229 if (li->flags & BRCMS_EIRP) {
1230 delta = band->antgain;
1231 } else {
1232 delta = 0;
1233 if (band->antgain > QDB(6))
1234 delta = band->antgain - QDB(6); /* Excess over 6 dB */
1235 }
1236
1237 if (li == &locale_i) {
1238 conducted_max = QDB(22);
1239 conducted_ofdm_max = QDB(22);
1240 }
1241
1242 /* CCK txpwr limits for 2.4G band */
1243 if (band->bandtype == BRCM_BAND_2G) {
1244 maxpwr = li->maxpwr[CHANNEL_POWER_IDX_2G_CCK(chan)];
1245
1246 maxpwr = maxpwr - delta;
1247 maxpwr = max(maxpwr, 0);
1248 maxpwr = min(maxpwr, conducted_max);
1249
1250 for (i = 0; i < BRCMS_NUM_RATES_CCK; i++)
1251 txpwr->cck[i] = (u8) maxpwr;
1252 }
1253
1254 /* OFDM txpwr limits for 2.4G or 5G bands */
1255 if (band->bandtype == BRCM_BAND_2G)
1256 maxpwr = li->maxpwr[CHANNEL_POWER_IDX_2G_OFDM(chan)];
1257 else
1258 maxpwr = li->maxpwr[CHANNEL_POWER_IDX_5G(chan)];
1259
1260 maxpwr = maxpwr - delta;
1261 maxpwr = max(maxpwr, 0);
1262 maxpwr = min(maxpwr, conducted_ofdm_max);
1263
1264 /* Keep OFDM lmit below CCK limit */
1265 if (band->bandtype == BRCM_BAND_2G)
1266 maxpwr = min_t(int, maxpwr, txpwr->cck[0]);
1267
1268 for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++)
1269 txpwr->ofdm[i] = (u8) maxpwr;
1270
1271 for (i = 0; i < BRCMS_NUM_RATES_OFDM; i++) {
1272 /*
1273 * OFDM 40 MHz SISO has the same power as the corresponding
1274 * MCS0-7 rate unless overriden by the locale specific code.
1275 * We set this value to 0 as a flag (presumably 0 dBm isn't
1276 * a possibility) and then copy the MCS0-7 value to the 40 MHz
1277 * value if it wasn't explicitly set.
1278 */
1279 txpwr->ofdm_40_siso[i] = 0;
1280
1281 txpwr->ofdm_cdd[i] = (u8) maxpwr;
1282
1283 txpwr->ofdm_40_cdd[i] = 0;
1284 }
1285
1286 /* MIMO/HT specific limits */
1287 if (li_mimo->flags & BRCMS_EIRP) {
1288 delta = band->antgain;
1289 } else {
1290 delta = 0;
1291 if (band->antgain > QDB(6))
1292 delta = band->antgain - QDB(6); /* Excess over 6 dB */
1293 }
1294
1295 if (band->bandtype == BRCM_BAND_2G)
1296 maxpwr_idx = (chan - 1);
1297 else
1298 maxpwr_idx = CHANNEL_POWER_IDX_5G(chan);
1299
1300 maxpwr20 = li_mimo->maxpwr20[maxpwr_idx];
1301 maxpwr40 = li_mimo->maxpwr40[maxpwr_idx];
1302
1303 maxpwr20 = maxpwr20 - delta;
1304 maxpwr20 = max(maxpwr20, 0);
1305 maxpwr40 = maxpwr40 - delta;
1306 maxpwr40 = max(maxpwr40, 0);
1307
1308 /* Fill in the MCS 0-7 (SISO) rates */
1309 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
1310
1311 /*
1312 * 20 MHz has the same power as the corresponding OFDM rate
1313 * unless overriden by the locale specific code.
1314 */
1315 txpwr->mcs_20_siso[i] = txpwr->ofdm[i];
1316 txpwr->mcs_40_siso[i] = 0;
1317 }
1318
1319 /* Fill in the MCS 0-7 CDD rates */
1320 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
1321 txpwr->mcs_20_cdd[i] = (u8) maxpwr20;
1322 txpwr->mcs_40_cdd[i] = (u8) maxpwr40;
1323 }
1324
1325 /*
1326 * These locales have SISO expressed in the
1327 * table and override CDD later
1328 */
1329 if (li_mimo == &locale_bn) {
1330 if (li_mimo == &locale_bn) {
1331 maxpwr20 = QDB(16);
1332 maxpwr40 = 0;
1333
1334 if (chan >= 3 && chan <= 11)
1335 maxpwr40 = QDB(16);
1336 }
1337
1338 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
1339 txpwr->mcs_20_siso[i] = (u8) maxpwr20;
1340 txpwr->mcs_40_siso[i] = (u8) maxpwr40;
1341 }
1342 }
1343
1344 /* Fill in the MCS 0-7 STBC rates */
1345 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
1346 txpwr->mcs_20_stbc[i] = 0;
1347 txpwr->mcs_40_stbc[i] = 0;
1348 }
1349
1350 /* Fill in the MCS 8-15 SDM rates */
1351 for (i = 0; i < BRCMS_NUM_RATES_MCS_2_STREAM; i++) {
1352 txpwr->mcs_20_mimo[i] = (u8) maxpwr20;
1353 txpwr->mcs_40_mimo[i] = (u8) maxpwr40;
1354 }
1355
1356 /* Fill in MCS32 */
1357 txpwr->mcs32 = (u8) maxpwr40;
1358
1359 for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
1360 if (txpwr->ofdm_40_cdd[i] == 0)
1361 txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
1362 if (i == 0) {
1363 i = i + 1;
1364 if (txpwr->ofdm_40_cdd[i] == 0)
1365 txpwr->ofdm_40_cdd[i] = txpwr->mcs_40_cdd[j];
1366 }
1367 }
1368
1369 /*
1370 * Copy the 40 MHZ MCS 0-7 CDD value to the 40 MHZ MCS 0-7 SISO
1371 * value if it wasn't provided explicitly.
1372 */
1373 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
1374 if (txpwr->mcs_40_siso[i] == 0)
1375 txpwr->mcs_40_siso[i] = txpwr->mcs_40_cdd[i];
1376 }
1377
1378 for (i = 0, j = 0; i < BRCMS_NUM_RATES_OFDM; i++, j++) {
1379 if (txpwr->ofdm_40_siso[i] == 0)
1380 txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
1381 if (i == 0) {
1382 i = i + 1;
1383 if (txpwr->ofdm_40_siso[i] == 0)
1384 txpwr->ofdm_40_siso[i] = txpwr->mcs_40_siso[j];
1385 }
1386 }
1387
1388 /*
1389 * Copy the 20 and 40 MHz MCS0-7 CDD values to the corresponding
1390 * STBC values if they weren't provided explicitly.
1391 */
1392 for (i = 0; i < BRCMS_NUM_RATES_MCS_1_STREAM; i++) {
1393 if (txpwr->mcs_20_stbc[i] == 0)
1394 txpwr->mcs_20_stbc[i] = txpwr->mcs_20_cdd[i];
1395
1396 if (txpwr->mcs_40_stbc[i] == 0)
1397 txpwr->mcs_40_stbc[i] = txpwr->mcs_40_cdd[i];
1398 }
1399
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]1400 return;
1401}
1402
1403/*
Alwin Beukers3de67812011-10-12 20:51:29 +0200[diff] [blame]1404 * Verify the chanspec is using a legal set of parameters, i.e. that the
1405 * chanspec specified a band, bw, ctl_sb and channel and that the
1406 * combination could be legal given any set of circumstances.
1407 * RETURNS: true is the chanspec is malformed, false if it looks good.
1408 */
1409static bool brcms_c_chspec_malformed(u16 chanspec)
1410{
1411 /* must be 2G or 5G band */
1412 if (!CHSPEC_IS5G(chanspec) && !CHSPEC_IS2G(chanspec))
1413 return true;
1414 /* must be 20 or 40 bandwidth */
1415 if (!CHSPEC_IS40(chanspec) && !CHSPEC_IS20(chanspec))
1416 return true;
1417
1418 /* 20MHZ b/w must have no ctl sb, 40 must have a ctl sb */
1419 if (CHSPEC_IS20(chanspec)) {
1420 if (!CHSPEC_SB_NONE(chanspec))
1421 return true;
1422 } else if (!CHSPEC_SB_UPPER(chanspec) && !CHSPEC_SB_LOWER(chanspec)) {
1423 return true;
1424 }
1425
1426 return false;
1427}
1428
1429/*
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]1430 * Validate the chanspec for this locale, for 40MHZ we need to also
1431 * check that the sidebands are valid 20MZH channels in this locale
1432 * and they are also a legal HT combination
1433 */
1434static bool
1435brcms_c_valid_chanspec_ext(struct brcms_cm_info *wlc_cm, u16 chspec,
1436 bool dualband)
1437{
1438 struct brcms_c_info *wlc = wlc_cm->wlc;
1439 u8 channel = CHSPEC_CHANNEL(chspec);
1440
1441 /* check the chanspec */
Alwin Beukers3de67812011-10-12 20:51:29 +0200[diff] [blame]1442 if (brcms_c_chspec_malformed(chspec)) {
Arend van Spriel5b435de2011-10-05 13:19:03 +0200[diff] [blame]1443 wiphy_err(wlc->wiphy, "wl%d: malformed chanspec 0x%x\n",
1444 wlc->pub->unit, chspec);
1445 return false;
1446 }
1447
1448 if (CHANNEL_BANDUNIT(wlc_cm->wlc, channel) !=
1449 chspec_bandunit(chspec))
1450 return false;
1451
1452 /* Check a 20Mhz channel */
1453 if (CHSPEC_IS20(chspec)) {
1454 if (dualband)
1455 return brcms_c_valid_channel20_db(wlc_cm->wlc->cmi,
1456 channel);
1457 else
1458 return brcms_c_valid_channel20(wlc_cm->wlc->cmi,
1459 channel);
1460 }
1461#ifdef SUPPORT_40MHZ
1462 /*
1463 * We know we are now checking a 40MHZ channel, so we should
1464 * only be here for NPHYS
1465 */
1466 if (BRCMS_ISNPHY(wlc->band) || BRCMS_ISSSLPNPHY(wlc->band)) {
1467 u8 upper_sideband = 0, idx;
1468 u8 num_ch20_entries =
1469 sizeof(chan20_info) / sizeof(struct chan20_info);
1470
1471 if (!VALID_40CHANSPEC_IN_BAND(wlc, chspec_bandunit(chspec)))
1472 return false;
1473
1474 if (dualband) {
1475 if (!brcms_c_valid_channel20_db(wlc->cmi,
1476 lower_20_sb(channel)) ||
1477 !brcms_c_valid_channel20_db(wlc->cmi,
1478 upper_20_sb(channel)))
1479 return false;
1480 } else {
1481 if (!brcms_c_valid_channel20(wlc->cmi,
1482 lower_20_sb(channel)) ||
1483 !brcms_c_valid_channel20(wlc->cmi,
1484 upper_20_sb(channel)))
1485 return false;
1486 }
1487
1488 /* find the lower sideband info in the sideband array */
1489 for (idx = 0; idx < num_ch20_entries; idx++) {
1490 if (chan20_info[idx].sb == lower_20_sb(channel))
1491 upper_sideband = chan20_info[idx].adj_sbs;
1492 }
1493 /* check that the lower sideband allows an upper sideband */
1494 if ((upper_sideband & (CH_UPPER_SB | CH_EWA_VALID)) ==
1495 (CH_UPPER_SB | CH_EWA_VALID))
1496 return true;
1497 return false;
1498 }
1499#endif /* 40 MHZ */
1500
1501 return false;
1502}
1503
1504bool brcms_c_valid_chanspec_db(struct brcms_cm_info *wlc_cm, u16 chspec)
1505{
1506 return brcms_c_valid_chanspec_ext(wlc_cm, chspec, true);
1507}