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3be63ff0 WYG |
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 | * | |
901069c7 | 8 | * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. |
3be63ff0 WYG |
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 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
901069c7 | 33 | * Copyright(c) 2005 - 2011 Intel Corporation. All rights reserved. |
3be63ff0 WYG |
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/slab.h> | |
67 | #include <linux/init.h> | |
68 | ||
69 | #include <net/mac80211.h> | |
70 | ||
71 | #include "iwl-commands.h" | |
72 | #include "iwl-dev.h" | |
73 | #include "iwl-core.h" | |
74 | #include "iwl-debug.h" | |
75 | #include "iwl-agn.h" | |
76 | #include "iwl-io.h" | |
77 | ||
3be63ff0 WYG |
78 | /****************************************************************************** |
79 | * | |
80 | * EEPROM related functions | |
81 | * | |
82 | ******************************************************************************/ | |
83 | ||
3be63ff0 WYG |
84 | int iwl_eeprom_check_version(struct iwl_priv *priv) |
85 | { | |
86 | u16 eeprom_ver; | |
87 | u16 calib_ver; | |
88 | ||
89 | eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION); | |
16b80b71 | 90 | calib_ver = iwlagn_eeprom_calib_version(priv); |
3be63ff0 WYG |
91 | |
92 | if (eeprom_ver < priv->cfg->eeprom_ver || | |
93 | calib_ver < priv->cfg->eeprom_calib_ver) | |
94 | goto err; | |
95 | ||
96 | IWL_INFO(priv, "device EEPROM VER=0x%x, CALIB=0x%x\n", | |
97 | eeprom_ver, calib_ver); | |
98 | ||
99 | return 0; | |
100 | err: | |
101 | IWL_ERR(priv, "Unsupported (too old) EEPROM VER=0x%x < 0x%x " | |
102 | "CALIB=0x%x < 0x%x\n", | |
103 | eeprom_ver, priv->cfg->eeprom_ver, | |
104 | calib_ver, priv->cfg->eeprom_calib_ver); | |
105 | return -EINVAL; | |
106 | ||
107 | } | |
108 | ||
21a5b3c6 WYG |
109 | int iwl_eeprom_check_sku(struct iwl_priv *priv) |
110 | { | |
dbbf1755 | 111 | u16 radio_cfg; |
21a5b3c6 | 112 | |
239712eb WYG |
113 | if (!priv->cfg->sku) { |
114 | /* not using sku overwrite */ | |
88950758 | 115 | priv->cfg->sku = iwl_eeprom_query16(priv, EEPROM_SKU_CAP); |
4f0642a6 WYG |
116 | if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE && |
117 | !priv->cfg->ht_params) { | |
118 | IWL_ERR(priv, "Invalid 11n configuration\n"); | |
119 | return -EINVAL; | |
120 | } | |
239712eb | 121 | } |
21a5b3c6 WYG |
122 | if (!priv->cfg->sku) { |
123 | IWL_ERR(priv, "Invalid device sku\n"); | |
124 | return -EINVAL; | |
125 | } | |
126 | ||
127 | IWL_INFO(priv, "Device SKU: 0X%x\n", priv->cfg->sku); | |
128 | ||
dbbf1755 WYG |
129 | if (!priv->cfg->valid_tx_ant && !priv->cfg->valid_rx_ant) { |
130 | /* not using .cfg overwrite */ | |
131 | radio_cfg = iwl_eeprom_query16(priv, EEPROM_RADIO_CONFIG); | |
132 | priv->cfg->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg); | |
38d59392 | 133 | priv->cfg->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg); |
dbbf1755 WYG |
134 | if (!priv->cfg->valid_tx_ant || !priv->cfg->valid_rx_ant) { |
135 | IWL_ERR(priv, "Invalid chain (0X%x, 0X%x)\n", | |
136 | priv->cfg->valid_tx_ant, | |
137 | priv->cfg->valid_rx_ant); | |
138 | return -EINVAL; | |
139 | } | |
140 | IWL_INFO(priv, "Valid Tx ant: 0X%x, Valid Rx ant: 0X%x\n", | |
141 | priv->cfg->valid_tx_ant, priv->cfg->valid_rx_ant); | |
142 | } | |
143 | /* | |
144 | * for some special cases, | |
145 | * EEPROM did not reflect the correct antenna setting | |
146 | * so overwrite the valid tx/rx antenna from .cfg | |
147 | */ | |
21a5b3c6 WYG |
148 | return 0; |
149 | } | |
150 | ||
3be63ff0 WYG |
151 | void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac) |
152 | { | |
70e3e8a6 | 153 | const u8 *addr = iwl_eeprom_query_addr(priv, |
3be63ff0 WYG |
154 | EEPROM_MAC_ADDRESS); |
155 | memcpy(mac, addr, ETH_ALEN); | |
156 | } | |
157 | ||
158 | /** | |
159 | * iwl_get_max_txpower_avg - get the highest tx power from all chains. | |
160 | * find the highest tx power from all chains for the channel | |
161 | */ | |
162 | static s8 iwl_get_max_txpower_avg(struct iwl_priv *priv, | |
163 | struct iwl_eeprom_enhanced_txpwr *enhanced_txpower, | |
164 | int element, s8 *max_txpower_in_half_dbm) | |
165 | { | |
166 | s8 max_txpower_avg = 0; /* (dBm) */ | |
167 | ||
3be63ff0 WYG |
168 | /* Take the highest tx power from any valid chains */ |
169 | if ((priv->cfg->valid_tx_ant & ANT_A) && | |
170 | (enhanced_txpower[element].chain_a_max > max_txpower_avg)) | |
171 | max_txpower_avg = enhanced_txpower[element].chain_a_max; | |
172 | if ((priv->cfg->valid_tx_ant & ANT_B) && | |
173 | (enhanced_txpower[element].chain_b_max > max_txpower_avg)) | |
174 | max_txpower_avg = enhanced_txpower[element].chain_b_max; | |
175 | if ((priv->cfg->valid_tx_ant & ANT_C) && | |
176 | (enhanced_txpower[element].chain_c_max > max_txpower_avg)) | |
177 | max_txpower_avg = enhanced_txpower[element].chain_c_max; | |
178 | if (((priv->cfg->valid_tx_ant == ANT_AB) | | |
179 | (priv->cfg->valid_tx_ant == ANT_BC) | | |
180 | (priv->cfg->valid_tx_ant == ANT_AC)) && | |
181 | (enhanced_txpower[element].mimo2_max > max_txpower_avg)) | |
182 | max_txpower_avg = enhanced_txpower[element].mimo2_max; | |
183 | if ((priv->cfg->valid_tx_ant == ANT_ABC) && | |
184 | (enhanced_txpower[element].mimo3_max > max_txpower_avg)) | |
185 | max_txpower_avg = enhanced_txpower[element].mimo3_max; | |
186 | ||
187 | /* | |
188 | * max. tx power in EEPROM is in 1/2 dBm format | |
189 | * convert from 1/2 dBm to dBm (round-up convert) | |
190 | * but we also do not want to loss 1/2 dBm resolution which | |
191 | * will impact performance | |
192 | */ | |
193 | *max_txpower_in_half_dbm = max_txpower_avg; | |
194 | return (max_txpower_avg & 0x01) + (max_txpower_avg >> 1); | |
195 | } | |
196 | ||
8d6748ca | 197 | static void |
b39488a9 | 198 | iwl_eeprom_enh_txp_read_element(struct iwl_priv *priv, |
8d6748ca JB |
199 | struct iwl_eeprom_enhanced_txpwr *txp, |
200 | s8 max_txpower_avg) | |
201 | { | |
202 | int ch_idx; | |
203 | bool is_ht40 = txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ; | |
204 | enum ieee80211_band band; | |
205 | ||
206 | band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ? | |
207 | IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ; | |
208 | ||
209 | for (ch_idx = 0; ch_idx < priv->channel_count; ch_idx++) { | |
210 | struct iwl_channel_info *ch_info = &priv->channel_info[ch_idx]; | |
211 | ||
212 | /* update matching channel or from common data only */ | |
213 | if (txp->channel != 0 && ch_info->channel != txp->channel) | |
214 | continue; | |
215 | ||
216 | /* update matching band only */ | |
217 | if (band != ch_info->band) | |
218 | continue; | |
219 | ||
220 | if (ch_info->max_power_avg < max_txpower_avg && !is_ht40) { | |
221 | ch_info->max_power_avg = max_txpower_avg; | |
222 | ch_info->curr_txpow = max_txpower_avg; | |
223 | ch_info->scan_power = max_txpower_avg; | |
224 | } | |
225 | ||
226 | if (is_ht40 && ch_info->ht40_max_power_avg < max_txpower_avg) | |
227 | ch_info->ht40_max_power_avg = max_txpower_avg; | |
228 | } | |
229 | } | |
230 | ||
231 | #define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT) | |
232 | #define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr) | |
233 | #define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE) | |
234 | ||
33c68770 WYG |
235 | #define TXP_CHECK_AND_PRINT(x) ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) \ |
236 | ? # x " " : "") | |
237 | ||
b39488a9 | 238 | void iwl_eeprom_enhanced_txpower(struct iwl_priv *priv) |
8d6748ca JB |
239 | { |
240 | struct iwl_eeprom_enhanced_txpwr *txp_array, *txp; | |
241 | int idx, entries; | |
242 | __le16 *txp_len; | |
243 | s8 max_txp_avg, max_txp_avg_halfdbm; | |
244 | ||
245 | BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8); | |
246 | ||
247 | /* the length is in 16-bit words, but we want entries */ | |
70e3e8a6 | 248 | txp_len = (__le16 *) iwl_eeprom_query_addr(priv, EEPROM_TXP_SZ_OFFS); |
8d6748ca JB |
249 | entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN; |
250 | ||
70e3e8a6 | 251 | txp_array = (void *) iwl_eeprom_query_addr(priv, EEPROM_TXP_OFFS); |
33c68770 | 252 | |
8d6748ca JB |
253 | for (idx = 0; idx < entries; idx++) { |
254 | txp = &txp_array[idx]; | |
8d6748ca JB |
255 | /* skip invalid entries */ |
256 | if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID)) | |
257 | continue; | |
258 | ||
33c68770 WYG |
259 | IWL_DEBUG_EEPROM(priv, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n", |
260 | (txp->channel && (txp->flags & | |
261 | IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ? | |
262 | "Common " : (txp->channel) ? | |
263 | "Channel" : "Common", | |
264 | (txp->channel), | |
265 | TXP_CHECK_AND_PRINT(VALID), | |
266 | TXP_CHECK_AND_PRINT(BAND_52G), | |
267 | TXP_CHECK_AND_PRINT(OFDM), | |
268 | TXP_CHECK_AND_PRINT(40MHZ), | |
269 | TXP_CHECK_AND_PRINT(HT_AP), | |
270 | TXP_CHECK_AND_PRINT(RES1), | |
271 | TXP_CHECK_AND_PRINT(RES2), | |
272 | TXP_CHECK_AND_PRINT(COMMON_TYPE), | |
273 | txp->flags); | |
274 | IWL_DEBUG_EEPROM(priv, "\t\t chain_A: 0x%02x " | |
275 | "chain_B: 0X%02x chain_C: 0X%02x\n", | |
276 | txp->chain_a_max, txp->chain_b_max, | |
277 | txp->chain_c_max); | |
278 | IWL_DEBUG_EEPROM(priv, "\t\t MIMO2: 0x%02x " | |
279 | "MIMO3: 0x%02x High 20_on_40: 0x%02x " | |
280 | "Low 20_on_40: 0x%02x\n", | |
281 | txp->mimo2_max, txp->mimo3_max, | |
282 | ((txp->delta_20_in_40 & 0xf0) >> 4), | |
283 | (txp->delta_20_in_40 & 0x0f)); | |
284 | ||
8d6748ca JB |
285 | max_txp_avg = iwl_get_max_txpower_avg(priv, txp_array, idx, |
286 | &max_txp_avg_halfdbm); | |
287 | ||
288 | /* | |
289 | * Update the user limit values values to the highest | |
290 | * power supported by any channel | |
291 | */ | |
292 | if (max_txp_avg > priv->tx_power_user_lmt) | |
293 | priv->tx_power_user_lmt = max_txp_avg; | |
294 | if (max_txp_avg_halfdbm > priv->tx_power_lmt_in_half_dbm) | |
295 | priv->tx_power_lmt_in_half_dbm = max_txp_avg_halfdbm; | |
296 | ||
b39488a9 | 297 | iwl_eeprom_enh_txp_read_element(priv, txp, max_txp_avg); |
8d6748ca JB |
298 | } |
299 | } |