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34cf6ff6 AK |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
8 | * Copyright(c) 2008 Intel Corporation. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
25 | * in the file called LICENSE.GPL. | |
26 | * | |
27 | * Contact Information: | |
28 | * Tomas Winkler <tomas.winkler@intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
33 | * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | *****************************************************************************/ | |
62 | ||
63 | ||
64 | #include <linux/kernel.h> | |
65 | #include <linux/module.h> | |
66 | #include <linux/version.h> | |
67 | #include <linux/init.h> | |
68 | ||
69 | #include <net/mac80211.h> | |
70 | ||
5a36ba0e | 71 | #include "iwl-commands.h" |
34cf6ff6 AK |
72 | #include "iwl-4965.h" |
73 | #include "iwl-core.h" | |
0a6857e7 | 74 | #include "iwl-debug.h" |
34cf6ff6 | 75 | #include "iwl-eeprom.h" |
3395f6e9 | 76 | #include "iwl-io.h" |
34cf6ff6 | 77 | |
bf85ea4f AK |
78 | /************************** EEPROM BANDS **************************** |
79 | * | |
80 | * The iwl_eeprom_band definitions below provide the mapping from the | |
81 | * EEPROM contents to the specific channel number supported for each | |
82 | * band. | |
83 | * | |
84 | * For example, iwl_priv->eeprom.band_3_channels[4] from the band_3 | |
85 | * definition below maps to physical channel 42 in the 5.2GHz spectrum. | |
86 | * The specific geography and calibration information for that channel | |
87 | * is contained in the eeprom map itself. | |
88 | * | |
89 | * During init, we copy the eeprom information and channel map | |
90 | * information into priv->channel_info_24/52 and priv->channel_map_24/52 | |
91 | * | |
92 | * channel_map_24/52 provides the index in the channel_info array for a | |
93 | * given channel. We have to have two separate maps as there is channel | |
94 | * overlap with the 2.4GHz and 5.2GHz spectrum as seen in band_1 and | |
95 | * band_2 | |
96 | * | |
97 | * A value of 0xff stored in the channel_map indicates that the channel | |
98 | * is not supported by the hardware at all. | |
99 | * | |
100 | * A value of 0xfe in the channel_map indicates that the channel is not | |
101 | * valid for Tx with the current hardware. This means that | |
102 | * while the system can tune and receive on a given channel, it may not | |
103 | * be able to associate or transmit any frames on that | |
104 | * channel. There is no corresponding channel information for that | |
105 | * entry. | |
106 | * | |
107 | *********************************************************************/ | |
108 | ||
109 | /* 2.4 GHz */ | |
110 | const u8 iwl_eeprom_band_1[14] = { | |
111 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 | |
112 | }; | |
113 | ||
114 | /* 5.2 GHz bands */ | |
115 | static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */ | |
116 | 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16 | |
117 | }; | |
118 | ||
119 | static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */ | |
120 | 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64 | |
121 | }; | |
122 | ||
123 | static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */ | |
124 | 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140 | |
125 | }; | |
126 | ||
127 | static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */ | |
128 | 145, 149, 153, 157, 161, 165 | |
129 | }; | |
130 | ||
131 | static const u8 iwl_eeprom_band_6[] = { /* 2.4 FAT channel */ | |
132 | 1, 2, 3, 4, 5, 6, 7 | |
133 | }; | |
134 | ||
135 | static const u8 iwl_eeprom_band_7[] = { /* 5.2 FAT channel */ | |
136 | 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157 | |
137 | }; | |
138 | ||
34cf6ff6 AK |
139 | /****************************************************************************** |
140 | * | |
141 | * EEPROM related functions | |
142 | * | |
143 | ******************************************************************************/ | |
144 | ||
c79dd5b5 | 145 | int iwlcore_eeprom_verify_signature(struct iwl_priv *priv) |
34cf6ff6 | 146 | { |
3395f6e9 | 147 | u32 gp = iwl_read32(priv, CSR_EEPROM_GP); |
34cf6ff6 AK |
148 | if ((gp & CSR_EEPROM_GP_VALID_MSK) == CSR_EEPROM_GP_BAD_SIGNATURE) { |
149 | IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp); | |
150 | return -ENOENT; | |
151 | } | |
152 | return 0; | |
153 | } | |
154 | EXPORT_SYMBOL(iwlcore_eeprom_verify_signature); | |
155 | ||
156 | /* | |
157 | * The device's EEPROM semaphore prevents conflicts between driver and uCode | |
158 | * when accessing the EEPROM; each access is a series of pulses to/from the | |
159 | * EEPROM chip, not a single event, so even reads could conflict if they | |
160 | * weren't arbitrated by the semaphore. | |
161 | */ | |
c79dd5b5 | 162 | int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv) |
34cf6ff6 AK |
163 | { |
164 | u16 count; | |
165 | int ret; | |
166 | ||
167 | for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) { | |
168 | /* Request semaphore */ | |
3395f6e9 TW |
169 | iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG, |
170 | CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); | |
34cf6ff6 AK |
171 | |
172 | /* See if we got it */ | |
3395f6e9 TW |
173 | ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG, |
174 | CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, | |
175 | CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM, | |
176 | EEPROM_SEM_TIMEOUT); | |
34cf6ff6 AK |
177 | if (ret >= 0) { |
178 | IWL_DEBUG_IO("Acquired semaphore after %d tries.\n", | |
179 | count+1); | |
180 | return ret; | |
181 | } | |
182 | } | |
183 | ||
184 | return ret; | |
185 | } | |
186 | EXPORT_SYMBOL(iwlcore_eeprom_acquire_semaphore); | |
187 | ||
c79dd5b5 | 188 | void iwlcore_eeprom_release_semaphore(struct iwl_priv *priv) |
34cf6ff6 | 189 | { |
3395f6e9 | 190 | iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG, |
34cf6ff6 AK |
191 | CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM); |
192 | ||
193 | } | |
194 | EXPORT_SYMBOL(iwlcore_eeprom_release_semaphore); | |
195 | ||
073d3f5f TW |
196 | const u8 *iwlcore_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) |
197 | { | |
198 | BUG_ON(offset >= priv->cfg->eeprom_size); | |
199 | return &priv->eeprom[offset]; | |
200 | } | |
201 | EXPORT_SYMBOL(iwlcore_eeprom_query_addr); | |
34cf6ff6 AK |
202 | |
203 | /** | |
204 | * iwl_eeprom_init - read EEPROM contents | |
205 | * | |
206 | * Load the EEPROM contents from adapter into priv->eeprom | |
207 | * | |
208 | * NOTE: This routine uses the non-debug IO access functions. | |
209 | */ | |
c79dd5b5 | 210 | int iwl_eeprom_init(struct iwl_priv *priv) |
34cf6ff6 | 211 | { |
073d3f5f | 212 | u16 *e; |
3395f6e9 | 213 | u32 gp = iwl_read32(priv, CSR_EEPROM_GP); |
34cf6ff6 | 214 | u32 r; |
073d3f5f | 215 | int sz = priv->cfg->eeprom_size; |
34cf6ff6 AK |
216 | int ret; |
217 | int i; | |
218 | u16 addr; | |
219 | ||
073d3f5f TW |
220 | /* allocate eeprom */ |
221 | priv->eeprom = kzalloc(sz, GFP_KERNEL); | |
222 | if (!priv->eeprom) { | |
223 | ret = -ENOMEM; | |
224 | goto alloc_err; | |
225 | } | |
226 | e = (u16 *)priv->eeprom; | |
34cf6ff6 | 227 | |
073d3f5f TW |
228 | ret = priv->cfg->ops->lib->eeprom_ops.verify_signature(priv); |
229 | if (ret < 0) { | |
34cf6ff6 | 230 | IWL_ERROR("EEPROM not found, EEPROM_GP=0x%08x", gp); |
073d3f5f TW |
231 | ret = -ENOENT; |
232 | goto err; | |
34cf6ff6 AK |
233 | } |
234 | ||
235 | /* Make sure driver (instead of uCode) is allowed to read EEPROM */ | |
236 | ret = priv->cfg->ops->lib->eeprom_ops.acquire_semaphore(priv); | |
237 | if (ret < 0) { | |
238 | IWL_ERROR("Failed to acquire EEPROM semaphore.\n"); | |
073d3f5f TW |
239 | ret = -ENOENT; |
240 | goto err; | |
34cf6ff6 AK |
241 | } |
242 | ||
243 | /* eeprom is an array of 16bit values */ | |
244 | for (addr = 0; addr < sz; addr += sizeof(u16)) { | |
3395f6e9 TW |
245 | _iwl_write32(priv, CSR_EEPROM_REG, addr << 1); |
246 | _iwl_clear_bit(priv, CSR_EEPROM_REG, CSR_EEPROM_REG_BIT_CMD); | |
34cf6ff6 AK |
247 | |
248 | for (i = 0; i < IWL_EEPROM_ACCESS_TIMEOUT; | |
249 | i += IWL_EEPROM_ACCESS_DELAY) { | |
3395f6e9 | 250 | r = _iwl_read_direct32(priv, CSR_EEPROM_REG); |
34cf6ff6 AK |
251 | if (r & CSR_EEPROM_REG_READ_VALID_MSK) |
252 | break; | |
253 | udelay(IWL_EEPROM_ACCESS_DELAY); | |
254 | } | |
255 | ||
256 | if (!(r & CSR_EEPROM_REG_READ_VALID_MSK)) { | |
257 | IWL_ERROR("Time out reading EEPROM[%d]", addr); | |
258 | ret = -ETIMEDOUT; | |
259 | goto done; | |
260 | } | |
261 | e[addr / 2] = le16_to_cpu((__force __le16)(r >> 16)); | |
262 | } | |
263 | ret = 0; | |
34cf6ff6 AK |
264 | done: |
265 | priv->cfg->ops->lib->eeprom_ops.release_semaphore(priv); | |
073d3f5f TW |
266 | err: |
267 | if (ret) | |
268 | kfree(priv->eeprom); | |
269 | alloc_err: | |
34cf6ff6 AK |
270 | return ret; |
271 | } | |
272 | EXPORT_SYMBOL(iwl_eeprom_init); | |
273 | ||
073d3f5f TW |
274 | void iwl_eeprom_free(struct iwl_priv *priv) |
275 | { | |
276 | if(priv->eeprom) | |
277 | kfree(priv->eeprom); | |
278 | priv->eeprom = NULL; | |
279 | } | |
280 | EXPORT_SYMBOL(iwl_eeprom_free); | |
281 | ||
8614f360 TW |
282 | int iwl_eeprom_check_version(struct iwl_priv *priv) |
283 | { | |
284 | return priv->cfg->ops->lib->eeprom_ops.check_version(priv); | |
285 | } | |
286 | EXPORT_SYMBOL(iwl_eeprom_check_version); | |
073d3f5f TW |
287 | |
288 | const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset) | |
289 | { | |
290 | return priv->cfg->ops->lib->eeprom_ops.query_addr(priv, offset); | |
291 | } | |
292 | EXPORT_SYMBOL(iwl_eeprom_query_addr); | |
293 | ||
294 | u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset) | |
295 | { | |
296 | return (u16)priv->eeprom[offset] | ((u16)priv->eeprom[offset + 1] << 8); | |
297 | } | |
298 | EXPORT_SYMBOL(iwl_eeprom_query16); | |
34cf6ff6 | 299 | |
c79dd5b5 | 300 | void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac) |
34cf6ff6 | 301 | { |
073d3f5f TW |
302 | const u8 *addr = priv->cfg->ops->lib->eeprom_ops.query_addr(priv, |
303 | EEPROM_MAC_ADDRESS); | |
304 | memcpy(mac, addr, ETH_ALEN); | |
34cf6ff6 AK |
305 | } |
306 | EXPORT_SYMBOL(iwl_eeprom_get_mac); | |
307 | ||
bf85ea4f | 308 | static void iwl_init_band_reference(const struct iwl_priv *priv, |
073d3f5f TW |
309 | int eep_band, int *eeprom_ch_count, |
310 | const struct iwl_eeprom_channel **eeprom_ch_info, | |
311 | const u8 **eeprom_ch_index) | |
bf85ea4f | 312 | { |
073d3f5f TW |
313 | u32 offset = priv->cfg->ops->lib-> |
314 | eeprom_ops.regulatory_bands[eep_band - 1]; | |
315 | switch (eep_band) { | |
bf85ea4f AK |
316 | case 1: /* 2.4GHz band */ |
317 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1); | |
073d3f5f TW |
318 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
319 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
320 | *eeprom_ch_index = iwl_eeprom_band_1; |
321 | break; | |
322 | case 2: /* 4.9GHz band */ | |
323 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2); | |
073d3f5f TW |
324 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
325 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
326 | *eeprom_ch_index = iwl_eeprom_band_2; |
327 | break; | |
328 | case 3: /* 5.2GHz band */ | |
329 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3); | |
073d3f5f TW |
330 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
331 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
332 | *eeprom_ch_index = iwl_eeprom_band_3; |
333 | break; | |
334 | case 4: /* 5.5GHz band */ | |
335 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4); | |
073d3f5f TW |
336 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
337 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
338 | *eeprom_ch_index = iwl_eeprom_band_4; |
339 | break; | |
340 | case 5: /* 5.7GHz band */ | |
341 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5); | |
073d3f5f TW |
342 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
343 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
344 | *eeprom_ch_index = iwl_eeprom_band_5; |
345 | break; | |
346 | case 6: /* 2.4GHz FAT channels */ | |
347 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6); | |
073d3f5f TW |
348 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
349 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
350 | *eeprom_ch_index = iwl_eeprom_band_6; |
351 | break; | |
352 | case 7: /* 5 GHz FAT channels */ | |
353 | *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7); | |
073d3f5f TW |
354 | *eeprom_ch_info = (struct iwl_eeprom_channel *) |
355 | iwl_eeprom_query_addr(priv, offset); | |
bf85ea4f AK |
356 | *eeprom_ch_index = iwl_eeprom_band_7; |
357 | break; | |
358 | default: | |
359 | BUG(); | |
360 | return; | |
361 | } | |
362 | } | |
363 | ||
364 | #define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \ | |
365 | ? # x " " : "") | |
366 | ||
367 | /** | |
368 | * iwl4965_set_fat_chan_info - Copy fat channel info into driver's priv. | |
369 | * | |
370 | * Does not set up a command, or touch hardware. | |
371 | */ | |
372 | static int iwl4965_set_fat_chan_info(struct iwl_priv *priv, | |
373 | enum ieee80211_band band, u16 channel, | |
073d3f5f | 374 | const struct iwl_eeprom_channel *eeprom_ch, |
bf85ea4f AK |
375 | u8 fat_extension_channel) |
376 | { | |
377 | struct iwl_channel_info *ch_info; | |
378 | ||
379 | ch_info = (struct iwl_channel_info *) | |
8622e705 | 380 | iwl_get_channel_info(priv, band, channel); |
bf85ea4f AK |
381 | |
382 | if (!is_channel_valid(ch_info)) | |
383 | return -1; | |
384 | ||
fe7c4040 | 385 | IWL_DEBUG_INFO("FAT Ch. %d [%sGHz] %s%s%s%s%s(0x%02x" |
bf85ea4f AK |
386 | " %ddBm): Ad-Hoc %ssupported\n", |
387 | ch_info->channel, | |
388 | is_channel_a_band(ch_info) ? | |
389 | "5.2" : "2.4", | |
390 | CHECK_AND_PRINT(IBSS), | |
391 | CHECK_AND_PRINT(ACTIVE), | |
392 | CHECK_AND_PRINT(RADAR), | |
393 | CHECK_AND_PRINT(WIDE), | |
bf85ea4f AK |
394 | CHECK_AND_PRINT(DFS), |
395 | eeprom_ch->flags, | |
396 | eeprom_ch->max_power_avg, | |
397 | ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) | |
398 | && !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? | |
399 | "" : "not "); | |
400 | ||
401 | ch_info->fat_eeprom = *eeprom_ch; | |
402 | ch_info->fat_max_power_avg = eeprom_ch->max_power_avg; | |
403 | ch_info->fat_curr_txpow = eeprom_ch->max_power_avg; | |
404 | ch_info->fat_min_power = 0; | |
405 | ch_info->fat_scan_power = eeprom_ch->max_power_avg; | |
406 | ch_info->fat_flags = eeprom_ch->flags; | |
407 | ch_info->fat_extension_channel = fat_extension_channel; | |
408 | ||
409 | return 0; | |
410 | } | |
411 | ||
412 | #define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \ | |
413 | ? # x " " : "") | |
414 | ||
415 | /** | |
416 | * iwl_init_channel_map - Set up driver's info for all possible channels | |
417 | */ | |
418 | int iwl_init_channel_map(struct iwl_priv *priv) | |
419 | { | |
420 | int eeprom_ch_count = 0; | |
421 | const u8 *eeprom_ch_index = NULL; | |
073d3f5f | 422 | const struct iwl_eeprom_channel *eeprom_ch_info = NULL; |
bf85ea4f AK |
423 | int band, ch; |
424 | struct iwl_channel_info *ch_info; | |
425 | ||
426 | if (priv->channel_count) { | |
427 | IWL_DEBUG_INFO("Channel map already initialized.\n"); | |
428 | return 0; | |
429 | } | |
430 | ||
bf85ea4f AK |
431 | IWL_DEBUG_INFO("Initializing regulatory info from EEPROM\n"); |
432 | ||
433 | priv->channel_count = | |
434 | ARRAY_SIZE(iwl_eeprom_band_1) + | |
435 | ARRAY_SIZE(iwl_eeprom_band_2) + | |
436 | ARRAY_SIZE(iwl_eeprom_band_3) + | |
437 | ARRAY_SIZE(iwl_eeprom_band_4) + | |
438 | ARRAY_SIZE(iwl_eeprom_band_5); | |
439 | ||
440 | IWL_DEBUG_INFO("Parsing data for %d channels.\n", priv->channel_count); | |
441 | ||
442 | priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) * | |
443 | priv->channel_count, GFP_KERNEL); | |
444 | if (!priv->channel_info) { | |
445 | IWL_ERROR("Could not allocate channel_info\n"); | |
446 | priv->channel_count = 0; | |
447 | return -ENOMEM; | |
448 | } | |
449 | ||
450 | ch_info = priv->channel_info; | |
451 | ||
452 | /* Loop through the 5 EEPROM bands adding them in order to the | |
453 | * channel map we maintain (that contains additional information than | |
454 | * what just in the EEPROM) */ | |
455 | for (band = 1; band <= 5; band++) { | |
456 | ||
457 | iwl_init_band_reference(priv, band, &eeprom_ch_count, | |
458 | &eeprom_ch_info, &eeprom_ch_index); | |
459 | ||
460 | /* Loop through each band adding each of the channels */ | |
461 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
462 | ch_info->channel = eeprom_ch_index[ch]; | |
463 | ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ : | |
464 | IEEE80211_BAND_5GHZ; | |
465 | ||
466 | /* permanently store EEPROM's channel regulatory flags | |
467 | * and max power in channel info database. */ | |
468 | ch_info->eeprom = eeprom_ch_info[ch]; | |
469 | ||
470 | /* Copy the run-time flags so they are there even on | |
471 | * invalid channels */ | |
472 | ch_info->flags = eeprom_ch_info[ch].flags; | |
473 | ||
474 | if (!(is_channel_valid(ch_info))) { | |
475 | IWL_DEBUG_INFO("Ch. %d Flags %x [%sGHz] - " | |
476 | "No traffic\n", | |
477 | ch_info->channel, | |
478 | ch_info->flags, | |
479 | is_channel_a_band(ch_info) ? | |
480 | "5.2" : "2.4"); | |
481 | ch_info++; | |
482 | continue; | |
483 | } | |
484 | ||
485 | /* Initialize regulatory-based run-time data */ | |
486 | ch_info->max_power_avg = ch_info->curr_txpow = | |
487 | eeprom_ch_info[ch].max_power_avg; | |
488 | ch_info->scan_power = eeprom_ch_info[ch].max_power_avg; | |
489 | ch_info->min_power = 0; | |
490 | ||
fe7c4040 | 491 | IWL_DEBUG_INFO("Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x" |
bf85ea4f AK |
492 | " %ddBm): Ad-Hoc %ssupported\n", |
493 | ch_info->channel, | |
494 | is_channel_a_band(ch_info) ? | |
495 | "5.2" : "2.4", | |
496 | CHECK_AND_PRINT_I(VALID), | |
497 | CHECK_AND_PRINT_I(IBSS), | |
498 | CHECK_AND_PRINT_I(ACTIVE), | |
499 | CHECK_AND_PRINT_I(RADAR), | |
500 | CHECK_AND_PRINT_I(WIDE), | |
bf85ea4f AK |
501 | CHECK_AND_PRINT_I(DFS), |
502 | eeprom_ch_info[ch].flags, | |
503 | eeprom_ch_info[ch].max_power_avg, | |
504 | ((eeprom_ch_info[ch]. | |
505 | flags & EEPROM_CHANNEL_IBSS) | |
506 | && !(eeprom_ch_info[ch]. | |
507 | flags & EEPROM_CHANNEL_RADAR)) | |
508 | ? "" : "not "); | |
509 | ||
510 | /* Set the user_txpower_limit to the highest power | |
511 | * supported by any channel */ | |
512 | if (eeprom_ch_info[ch].max_power_avg > | |
513 | priv->user_txpower_limit) | |
514 | priv->user_txpower_limit = | |
515 | eeprom_ch_info[ch].max_power_avg; | |
516 | ||
517 | ch_info++; | |
518 | } | |
519 | } | |
520 | ||
521 | /* Two additional EEPROM bands for 2.4 and 5 GHz FAT channels */ | |
522 | for (band = 6; band <= 7; band++) { | |
523 | enum ieee80211_band ieeeband; | |
524 | u8 fat_extension_chan; | |
525 | ||
526 | iwl_init_band_reference(priv, band, &eeprom_ch_count, | |
527 | &eeprom_ch_info, &eeprom_ch_index); | |
528 | ||
529 | /* EEPROM band 6 is 2.4, band 7 is 5 GHz */ | |
530 | ieeeband = | |
531 | (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ; | |
532 | ||
533 | /* Loop through each band adding each of the channels */ | |
534 | for (ch = 0; ch < eeprom_ch_count; ch++) { | |
535 | ||
536 | if ((band == 6) && | |
537 | ((eeprom_ch_index[ch] == 5) || | |
538 | (eeprom_ch_index[ch] == 6) || | |
539 | (eeprom_ch_index[ch] == 7))) | |
540 | fat_extension_chan = HT_IE_EXT_CHANNEL_MAX; | |
541 | else | |
542 | fat_extension_chan = HT_IE_EXT_CHANNEL_ABOVE; | |
543 | ||
544 | /* Set up driver's info for lower half */ | |
545 | iwl4965_set_fat_chan_info(priv, ieeeband, | |
546 | eeprom_ch_index[ch], | |
547 | &(eeprom_ch_info[ch]), | |
548 | fat_extension_chan); | |
549 | ||
550 | /* Set up driver's info for upper half */ | |
551 | iwl4965_set_fat_chan_info(priv, ieeeband, | |
552 | (eeprom_ch_index[ch] + 4), | |
553 | &(eeprom_ch_info[ch]), | |
554 | HT_IE_EXT_CHANNEL_BELOW); | |
555 | } | |
556 | } | |
557 | ||
558 | return 0; | |
559 | } | |
560 | EXPORT_SYMBOL(iwl_init_channel_map); | |
561 | ||
562 | /* | |
563 | * iwl_free_channel_map - undo allocations in iwl4965_init_channel_map | |
564 | */ | |
565 | void iwl_free_channel_map(struct iwl_priv *priv) | |
566 | { | |
567 | kfree(priv->channel_info); | |
568 | priv->channel_count = 0; | |
569 | } | |
570 | EXPORT_SYMBOL(iwl_free_channel_map); | |
571 | ||
572 | /** | |
573 | * iwl_get_channel_info - Find driver's private channel info | |
574 | * | |
575 | * Based on band and channel number. | |
576 | */ | |
8622e705 | 577 | const struct iwl_channel_info *iwl_get_channel_info( |
bf85ea4f AK |
578 | const struct iwl_priv *priv, |
579 | enum ieee80211_band band, u16 channel) | |
580 | { | |
581 | int i; | |
582 | ||
583 | switch (band) { | |
584 | case IEEE80211_BAND_5GHZ: | |
585 | for (i = 14; i < priv->channel_count; i++) { | |
586 | if (priv->channel_info[i].channel == channel) | |
587 | return &priv->channel_info[i]; | |
588 | } | |
589 | break; | |
590 | case IEEE80211_BAND_2GHZ: | |
591 | if (channel >= 1 && channel <= 14) | |
592 | return &priv->channel_info[channel - 1]; | |
593 | break; | |
594 | default: | |
595 | BUG(); | |
596 | } | |
597 | ||
598 | return NULL; | |
599 | } | |
8622e705 | 600 | EXPORT_SYMBOL(iwl_get_channel_info); |
bf85ea4f | 601 |