1 /******************************************************************************
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.
8 * Copyright(c) 2008 - 2013 Intel Corporation. All rights reserved.
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
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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.
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20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
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28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2005 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
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37 * modification, are permitted provided that the following conditions
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61 *****************************************************************************/
62 #include <linux/types.h>
63 #include <linux/slab.h>
64 #include <linux/export.h>
66 #include "iwl-modparams.h"
67 #include "iwl-nvm-parse.h"
69 /* NVM offsets (in words) definitions */
70 enum wkp_nvm_offsets {
71 /* NVM HW-Section offset (in words) definitions */
74 /* NVM SW-Section offset (in words) definitions */
75 NVM_SW_SECTION = 0x1C0,
80 NVM_CHANNELS = 0x1E0 - NVM_SW_SECTION,
82 /* NVM calibration section offset (in words) definitions */
83 NVM_CALIB_SECTION = 0x2B8,
84 XTAL_CALIB = 0x316 - NVM_CALIB_SECTION
87 /* SKU Capabilities (actual values from NVM definition) */
89 NVM_SKU_CAP_BAND_24GHZ = BIT(0),
90 NVM_SKU_CAP_BAND_52GHZ = BIT(1),
91 NVM_SKU_CAP_11N_ENABLE = BIT(2),
94 /* radio config bits (actual values from NVM definition) */
95 #define NVM_RF_CFG_DASH_MSK(x) (x & 0x3) /* bits 0-1 */
96 #define NVM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */
97 #define NVM_RF_CFG_TYPE_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */
98 #define NVM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */
99 #define NVM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */
100 #define NVM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
103 * These are the channel numbers in the order that they are stored in the NVM
105 static const u8 iwl_nvm_channels[] = {
107 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
109 36, 40, 44 , 48, 52, 56, 60, 64,
110 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144,
111 149, 153, 157, 161, 165
114 #define IWL_NUM_CHANNELS ARRAY_SIZE(iwl_nvm_channels)
115 #define NUM_2GHZ_CHANNELS 14
116 #define FIRST_2GHZ_HT_MINUS 5
117 #define LAST_2GHZ_HT_PLUS 9
118 #define LAST_5GHZ_HT 161
121 /* rate data (static) */
122 static struct ieee80211_rate iwl_cfg80211_rates[] = {
123 { .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
124 { .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
125 .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
126 { .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
127 .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
128 { .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
129 .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
130 { .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
131 { .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, },
132 { .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, },
133 { .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, },
134 { .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, },
135 { .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, },
136 { .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, },
137 { .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, },
139 #define RATES_24_OFFS 0
140 #define N_RATES_24 ARRAY_SIZE(iwl_cfg80211_rates)
141 #define RATES_52_OFFS 4
142 #define N_RATES_52 (N_RATES_24 - RATES_52_OFFS)
145 * enum iwl_nvm_channel_flags - channel flags in NVM
146 * @NVM_CHANNEL_VALID: channel is usable for this SKU/geo
147 * @NVM_CHANNEL_IBSS: usable as an IBSS channel
148 * @NVM_CHANNEL_ACTIVE: active scanning allowed
149 * @NVM_CHANNEL_RADAR: radar detection required
150 * @NVM_CHANNEL_DFS: dynamic freq selection candidate
151 * @NVM_CHANNEL_WIDE: 20 MHz channel okay (?)
152 * @NVM_CHANNEL_40MHZ: 40 MHz channel okay (?)
153 * @NVM_CHANNEL_80MHZ: 80 MHz channel okay (?)
154 * @NVM_CHANNEL_160MHZ: 160 MHz channel okay (?)
156 enum iwl_nvm_channel_flags {
157 NVM_CHANNEL_VALID = BIT(0),
158 NVM_CHANNEL_IBSS = BIT(1),
159 NVM_CHANNEL_ACTIVE = BIT(3),
160 NVM_CHANNEL_RADAR = BIT(4),
161 NVM_CHANNEL_DFS = BIT(7),
162 NVM_CHANNEL_WIDE = BIT(8),
163 NVM_CHANNEL_40MHZ = BIT(9),
164 NVM_CHANNEL_80MHZ = BIT(10),
165 NVM_CHANNEL_160MHZ = BIT(11),
168 #define CHECK_AND_PRINT_I(x) \
169 ((ch_flags & NVM_CHANNEL_##x) ? # x " " : "")
171 static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
172 struct iwl_nvm_data *data,
173 const __le16 * const nvm_ch_flags)
177 struct ieee80211_channel *channel;
181 for (ch_idx = 0; ch_idx < IWL_NUM_CHANNELS; ch_idx++) {
182 ch_flags = __le16_to_cpup(nvm_ch_flags + ch_idx);
183 if (!(ch_flags & NVM_CHANNEL_VALID)) {
184 IWL_DEBUG_EEPROM(dev,
185 "Ch. %d Flags %x [%sGHz] - No traffic\n",
186 iwl_nvm_channels[ch_idx],
188 (ch_idx >= NUM_2GHZ_CHANNELS) ?
193 channel = &data->channels[n_channels];
196 channel->hw_value = iwl_nvm_channels[ch_idx];
197 channel->band = (ch_idx < NUM_2GHZ_CHANNELS) ?
198 IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
199 channel->center_freq =
200 ieee80211_channel_to_frequency(
201 channel->hw_value, channel->band);
203 /* TODO: Need to be dependent to the NVM */
204 channel->flags = IEEE80211_CHAN_NO_HT40;
205 if (ch_idx < NUM_2GHZ_CHANNELS &&
206 (ch_flags & NVM_CHANNEL_40MHZ)) {
207 if (iwl_nvm_channels[ch_idx] <= LAST_2GHZ_HT_PLUS)
208 channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
209 if (iwl_nvm_channels[ch_idx] >= FIRST_2GHZ_HT_MINUS)
210 channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
211 } else if (iwl_nvm_channels[ch_idx] <= LAST_5GHZ_HT &&
212 (ch_flags & NVM_CHANNEL_40MHZ)) {
213 if ((ch_idx - NUM_2GHZ_CHANNELS) % 2 == 0)
214 channel->flags &= ~IEEE80211_CHAN_NO_HT40PLUS;
216 channel->flags &= ~IEEE80211_CHAN_NO_HT40MINUS;
218 if (!(ch_flags & NVM_CHANNEL_80MHZ))
219 channel->flags |= IEEE80211_CHAN_NO_80MHZ;
220 if (!(ch_flags & NVM_CHANNEL_160MHZ))
221 channel->flags |= IEEE80211_CHAN_NO_160MHZ;
223 if (!(ch_flags & NVM_CHANNEL_IBSS))
224 channel->flags |= IEEE80211_CHAN_NO_IBSS;
226 if (!(ch_flags & NVM_CHANNEL_ACTIVE))
227 channel->flags |= IEEE80211_CHAN_PASSIVE_SCAN;
229 if (ch_flags & NVM_CHANNEL_RADAR)
230 channel->flags |= IEEE80211_CHAN_RADAR;
232 /* Initialize regulatory-based run-time data */
234 /* TODO: read the real value from the NVM */
235 channel->max_power = 0;
236 is_5ghz = channel->band == IEEE80211_BAND_5GHZ;
237 IWL_DEBUG_EEPROM(dev,
238 "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
240 is_5ghz ? "5.2" : "2.4",
241 CHECK_AND_PRINT_I(VALID),
242 CHECK_AND_PRINT_I(IBSS),
243 CHECK_AND_PRINT_I(ACTIVE),
244 CHECK_AND_PRINT_I(RADAR),
245 CHECK_AND_PRINT_I(WIDE),
246 CHECK_AND_PRINT_I(DFS),
249 ((ch_flags & NVM_CHANNEL_IBSS) &&
250 !(ch_flags & NVM_CHANNEL_RADAR))
257 static void iwl_init_vht_hw_capab(const struct iwl_cfg *cfg,
258 struct iwl_nvm_data *data,
259 struct ieee80211_sta_vht_cap *vht_cap)
261 /* For now, assume new devices with NVM are VHT capable */
263 vht_cap->vht_supported = true;
265 vht_cap->cap = IEEE80211_VHT_CAP_SHORT_GI_80 |
266 IEEE80211_VHT_CAP_RXSTBC_1 |
267 IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE |
268 7 << IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT;
270 if (iwlwifi_mod_params.amsdu_size_8K)
271 vht_cap->cap |= IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991;
273 vht_cap->vht_mcs.rx_mcs_map =
274 cpu_to_le16(IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 |
275 IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 |
276 IEEE80211_VHT_MCS_NOT_SUPPORTED << 4 |
277 IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 |
278 IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 |
279 IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 |
280 IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 |
281 IEEE80211_VHT_MCS_NOT_SUPPORTED << 14);
283 if (data->valid_rx_ant == 1 || cfg->rx_with_siso_diversity) {
284 vht_cap->cap |= IEEE80211_VHT_CAP_RX_ANTENNA_PATTERN |
285 IEEE80211_VHT_CAP_TX_ANTENNA_PATTERN;
286 /* this works because NOT_SUPPORTED == 3 */
287 vht_cap->vht_mcs.rx_mcs_map |=
288 cpu_to_le16(IEEE80211_VHT_MCS_NOT_SUPPORTED << 2);
291 vht_cap->vht_mcs.tx_mcs_map = vht_cap->vht_mcs.rx_mcs_map;
294 static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
295 struct iwl_nvm_data *data, const __le16 *nvm_sw)
297 int n_channels = iwl_init_channel_map(dev, cfg, data,
298 &nvm_sw[NVM_CHANNELS]);
300 struct ieee80211_supported_band *sband;
302 sband = &data->bands[IEEE80211_BAND_2GHZ];
303 sband->band = IEEE80211_BAND_2GHZ;
304 sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS];
305 sband->n_bitrates = N_RATES_24;
306 n_used += iwl_init_sband_channels(data, sband, n_channels,
307 IEEE80211_BAND_2GHZ);
308 iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_2GHZ);
310 sband = &data->bands[IEEE80211_BAND_5GHZ];
311 sband->band = IEEE80211_BAND_5GHZ;
312 sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
313 sband->n_bitrates = N_RATES_52;
314 n_used += iwl_init_sband_channels(data, sband, n_channels,
315 IEEE80211_BAND_5GHZ);
316 iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ);
317 iwl_init_vht_hw_capab(cfg, data, &sband->vht_cap);
319 if (n_channels != n_used)
320 IWL_ERR_DEV(dev, "NVM: used only %d of %d channels\n",
324 struct iwl_nvm_data *
325 iwl_parse_nvm_data(struct device *dev, const struct iwl_cfg *cfg,
326 const __le16 *nvm_hw, const __le16 *nvm_sw,
327 const __le16 *nvm_calib)
329 struct iwl_nvm_data *data;
330 u8 hw_addr[ETH_ALEN];
333 data = kzalloc(sizeof(*data) +
334 sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS,
339 data->nvm_version = le16_to_cpup(nvm_sw + NVM_VERSION);
341 radio_cfg = le16_to_cpup(nvm_sw + RADIO_CFG);
342 data->radio_cfg_type = NVM_RF_CFG_TYPE_MSK(radio_cfg);
343 data->radio_cfg_step = NVM_RF_CFG_STEP_MSK(radio_cfg);
344 data->radio_cfg_dash = NVM_RF_CFG_DASH_MSK(radio_cfg);
345 data->radio_cfg_pnum = NVM_RF_CFG_PNUM_MSK(radio_cfg);
346 data->valid_tx_ant = NVM_RF_CFG_TX_ANT_MSK(radio_cfg);
347 data->valid_rx_ant = NVM_RF_CFG_RX_ANT_MSK(radio_cfg);
349 sku = le16_to_cpup(nvm_sw + SKU);
350 data->sku_cap_band_24GHz_enable = sku & NVM_SKU_CAP_BAND_24GHZ;
351 data->sku_cap_band_52GHz_enable = sku & NVM_SKU_CAP_BAND_52GHZ;
352 data->sku_cap_11n_enable = sku & NVM_SKU_CAP_11N_ENABLE;
353 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
354 data->sku_cap_11n_enable = false;
356 /* check overrides (some devices have wrong NVM) */
357 if (cfg->valid_tx_ant)
358 data->valid_tx_ant = cfg->valid_tx_ant;
359 if (cfg->valid_rx_ant)
360 data->valid_rx_ant = cfg->valid_rx_ant;
362 if (!data->valid_tx_ant || !data->valid_rx_ant) {
363 IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n",
364 data->valid_tx_ant, data->valid_rx_ant);
369 data->n_hw_addrs = le16_to_cpup(nvm_sw + N_HW_ADDRS);
371 data->xtal_calib[0] = *(nvm_calib + XTAL_CALIB);
372 data->xtal_calib[1] = *(nvm_calib + XTAL_CALIB + 1);
374 /* The byte order is little endian 16 bit, meaning 214365 */
375 memcpy(hw_addr, nvm_hw + HW_ADDR, ETH_ALEN);
376 data->hw_addr[0] = hw_addr[1];
377 data->hw_addr[1] = hw_addr[0];
378 data->hw_addr[2] = hw_addr[3];
379 data->hw_addr[3] = hw_addr[2];
380 data->hw_addr[4] = hw_addr[5];
381 data->hw_addr[5] = hw_addr[4];
383 iwl_init_sbands(dev, cfg, data, nvm_sw);
385 data->calib_version = 255; /* TODO:
386 this value will prevent some checks from
387 failing, we need to check if this
388 field is still needed, and if it does,
389 where is it in the NVM*/
393 IWL_EXPORT_SYMBOL(iwl_parse_nvm_data);