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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 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2015 Intel Mobile Communications GmbH
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
23 * USA
24 *
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
27 *
28 * Contact Information:
29 * Intel Linux Wireless <linuxwifi@intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
31 *
32 * BSD LICENSE
33 *
34 * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2015 Intel Mobile Communications GmbH
36 * All rights reserved.
37 *
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
40 * are met:
41 *
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
47 * distribution.
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
63 *****************************************************************************/
64#include <linux/types.h>
65#include <linux/slab.h>
66#include <linux/export.h>
67#include "iwl-drv.h"
68#include "iwl-modparams.h"
69#include "iwl-eeprom-parse.h"
70
71/* EEPROM offset definitions */
72
73/* indirect access definitions */
74#define ADDRESS_MSK 0x0000FFFF
75#define INDIRECT_TYPE_MSK 0x000F0000
76#define INDIRECT_HOST 0x00010000
77#define INDIRECT_GENERAL 0x00020000
78#define INDIRECT_REGULATORY 0x00030000
79#define INDIRECT_CALIBRATION 0x00040000
80#define INDIRECT_PROCESS_ADJST 0x00050000
81#define INDIRECT_OTHERS 0x00060000
82#define INDIRECT_TXP_LIMIT 0x00070000
83#define INDIRECT_TXP_LIMIT_SIZE 0x00080000
84#define INDIRECT_ADDRESS 0x00100000
85
86/* corresponding link offsets in EEPROM */
87#define EEPROM_LINK_HOST (2*0x64)
88#define EEPROM_LINK_GENERAL (2*0x65)
89#define EEPROM_LINK_REGULATORY (2*0x66)
90#define EEPROM_LINK_CALIBRATION (2*0x67)
91#define EEPROM_LINK_PROCESS_ADJST (2*0x68)
92#define EEPROM_LINK_OTHERS (2*0x69)
93#define EEPROM_LINK_TXP_LIMIT (2*0x6a)
94#define EEPROM_LINK_TXP_LIMIT_SIZE (2*0x6b)
95
96/* General */
97#define EEPROM_DEVICE_ID (2*0x08) /* 2 bytes */
98#define EEPROM_SUBSYSTEM_ID (2*0x0A) /* 2 bytes */
99#define EEPROM_MAC_ADDRESS (2*0x15) /* 6 bytes */
100#define EEPROM_BOARD_REVISION (2*0x35) /* 2 bytes */
101#define EEPROM_BOARD_PBA_NUMBER (2*0x3B+1) /* 9 bytes */
102#define EEPROM_VERSION (2*0x44) /* 2 bytes */
103#define EEPROM_SKU_CAP (2*0x45) /* 2 bytes */
104#define EEPROM_OEM_MODE (2*0x46) /* 2 bytes */
105#define EEPROM_RADIO_CONFIG (2*0x48) /* 2 bytes */
106#define EEPROM_NUM_MAC_ADDRESS (2*0x4C) /* 2 bytes */
107
108/* calibration */
109struct iwl_eeprom_calib_hdr {
110 u8 version;
111 u8 pa_type;
112 __le16 voltage;
113} __packed;
114
115#define EEPROM_CALIB_ALL (INDIRECT_ADDRESS | INDIRECT_CALIBRATION)
116#define EEPROM_XTAL ((2*0x128) | EEPROM_CALIB_ALL)
117
118/* temperature */
119#define EEPROM_KELVIN_TEMPERATURE ((2*0x12A) | EEPROM_CALIB_ALL)
120#define EEPROM_RAW_TEMPERATURE ((2*0x12B) | EEPROM_CALIB_ALL)
121
122/* SKU Capabilities (actual values from EEPROM definition) */
123enum eeprom_sku_bits {
124 EEPROM_SKU_CAP_BAND_24GHZ = BIT(4),
125 EEPROM_SKU_CAP_BAND_52GHZ = BIT(5),
126 EEPROM_SKU_CAP_11N_ENABLE = BIT(6),
127 EEPROM_SKU_CAP_AMT_ENABLE = BIT(7),
128 EEPROM_SKU_CAP_IPAN_ENABLE = BIT(8)
129};
130
131/* radio config bits (actual values from EEPROM definition) */
132#define EEPROM_RF_CFG_TYPE_MSK(x) (x & 0x3) /* bits 0-1 */
133#define EEPROM_RF_CFG_STEP_MSK(x) ((x >> 2) & 0x3) /* bits 2-3 */
134#define EEPROM_RF_CFG_DASH_MSK(x) ((x >> 4) & 0x3) /* bits 4-5 */
135#define EEPROM_RF_CFG_PNUM_MSK(x) ((x >> 6) & 0x3) /* bits 6-7 */
136#define EEPROM_RF_CFG_TX_ANT_MSK(x) ((x >> 8) & 0xF) /* bits 8-11 */
137#define EEPROM_RF_CFG_RX_ANT_MSK(x) ((x >> 12) & 0xF) /* bits 12-15 */
138
139
140/*
141 * EEPROM bands
142 * These are the channel numbers from each band in the order
143 * that they are stored in the EEPROM band information. Note
144 * that EEPROM bands aren't the same as mac80211 bands, and
145 * there are even special "ht40 bands" in the EEPROM.
146 */
147static const u8 iwl_eeprom_band_1[14] = { /* 2.4 GHz */
148 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
149};
150
151static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */
152 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
153};
154
155static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */
156 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
157};
158
159static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
160 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
161};
162
163static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
164 145, 149, 153, 157, 161, 165
165};
166
167static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */
168 1, 2, 3, 4, 5, 6, 7
169};
170
171static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */
172 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
173};
174
175#define IWL_NUM_CHANNELS (ARRAY_SIZE(iwl_eeprom_band_1) + \
176 ARRAY_SIZE(iwl_eeprom_band_2) + \
177 ARRAY_SIZE(iwl_eeprom_band_3) + \
178 ARRAY_SIZE(iwl_eeprom_band_4) + \
179 ARRAY_SIZE(iwl_eeprom_band_5))
180
181/* rate data (static) */
182static struct ieee80211_rate iwl_cfg80211_rates[] = {
183 { .bitrate = 1 * 10, .hw_value = 0, .hw_value_short = 0, },
184 { .bitrate = 2 * 10, .hw_value = 1, .hw_value_short = 1,
185 .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
186 { .bitrate = 5.5 * 10, .hw_value = 2, .hw_value_short = 2,
187 .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
188 { .bitrate = 11 * 10, .hw_value = 3, .hw_value_short = 3,
189 .flags = IEEE80211_RATE_SHORT_PREAMBLE, },
190 { .bitrate = 6 * 10, .hw_value = 4, .hw_value_short = 4, },
191 { .bitrate = 9 * 10, .hw_value = 5, .hw_value_short = 5, },
192 { .bitrate = 12 * 10, .hw_value = 6, .hw_value_short = 6, },
193 { .bitrate = 18 * 10, .hw_value = 7, .hw_value_short = 7, },
194 { .bitrate = 24 * 10, .hw_value = 8, .hw_value_short = 8, },
195 { .bitrate = 36 * 10, .hw_value = 9, .hw_value_short = 9, },
196 { .bitrate = 48 * 10, .hw_value = 10, .hw_value_short = 10, },
197 { .bitrate = 54 * 10, .hw_value = 11, .hw_value_short = 11, },
198};
199#define RATES_24_OFFS 0
200#define N_RATES_24 ARRAY_SIZE(iwl_cfg80211_rates)
201#define RATES_52_OFFS 4
202#define N_RATES_52 (N_RATES_24 - RATES_52_OFFS)
203
204/* EEPROM reading functions */
205
206static u16 iwl_eeprom_query16(const u8 *eeprom, size_t eeprom_size, int offset)
207{
208 if (WARN_ON(offset + sizeof(u16) > eeprom_size))
209 return 0;
210 return le16_to_cpup((__le16 *)(eeprom + offset));
211}
212
213static u32 eeprom_indirect_address(const u8 *eeprom, size_t eeprom_size,
214 u32 address)
215{
216 u16 offset = 0;
217
218 if ((address & INDIRECT_ADDRESS) == 0)
219 return address;
220
221 switch (address & INDIRECT_TYPE_MSK) {
222 case INDIRECT_HOST:
223 offset = iwl_eeprom_query16(eeprom, eeprom_size,
224 EEPROM_LINK_HOST);
225 break;
226 case INDIRECT_GENERAL:
227 offset = iwl_eeprom_query16(eeprom, eeprom_size,
228 EEPROM_LINK_GENERAL);
229 break;
230 case INDIRECT_REGULATORY:
231 offset = iwl_eeprom_query16(eeprom, eeprom_size,
232 EEPROM_LINK_REGULATORY);
233 break;
234 case INDIRECT_TXP_LIMIT:
235 offset = iwl_eeprom_query16(eeprom, eeprom_size,
236 EEPROM_LINK_TXP_LIMIT);
237 break;
238 case INDIRECT_TXP_LIMIT_SIZE:
239 offset = iwl_eeprom_query16(eeprom, eeprom_size,
240 EEPROM_LINK_TXP_LIMIT_SIZE);
241 break;
242 case INDIRECT_CALIBRATION:
243 offset = iwl_eeprom_query16(eeprom, eeprom_size,
244 EEPROM_LINK_CALIBRATION);
245 break;
246 case INDIRECT_PROCESS_ADJST:
247 offset = iwl_eeprom_query16(eeprom, eeprom_size,
248 EEPROM_LINK_PROCESS_ADJST);
249 break;
250 case INDIRECT_OTHERS:
251 offset = iwl_eeprom_query16(eeprom, eeprom_size,
252 EEPROM_LINK_OTHERS);
253 break;
254 default:
255 WARN_ON(1);
256 break;
257 }
258
259 /* translate the offset from words to byte */
260 return (address & ADDRESS_MSK) + (offset << 1);
261}
262
263static const u8 *iwl_eeprom_query_addr(const u8 *eeprom, size_t eeprom_size,
264 u32 offset)
265{
266 u32 address = eeprom_indirect_address(eeprom, eeprom_size, offset);
267
268 if (WARN_ON(address >= eeprom_size))
269 return NULL;
270
271 return &eeprom[address];
272}
273
274static int iwl_eeprom_read_calib(const u8 *eeprom, size_t eeprom_size,
275 struct iwl_nvm_data *data)
276{
277 struct iwl_eeprom_calib_hdr *hdr;
278
279 hdr = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size,
280 EEPROM_CALIB_ALL);
281 if (!hdr)
282 return -ENODATA;
283 data->calib_version = hdr->version;
284 data->calib_voltage = hdr->voltage;
285
286 return 0;
287}
288
289/**
290 * enum iwl_eeprom_channel_flags - channel flags in EEPROM
291 * @EEPROM_CHANNEL_VALID: channel is usable for this SKU/geo
292 * @EEPROM_CHANNEL_IBSS: usable as an IBSS channel
293 * @EEPROM_CHANNEL_ACTIVE: active scanning allowed
294 * @EEPROM_CHANNEL_RADAR: radar detection required
295 * @EEPROM_CHANNEL_WIDE: 20 MHz channel okay (?)
296 * @EEPROM_CHANNEL_DFS: dynamic freq selection candidate
297 */
298enum iwl_eeprom_channel_flags {
299 EEPROM_CHANNEL_VALID = BIT(0),
300 EEPROM_CHANNEL_IBSS = BIT(1),
301 EEPROM_CHANNEL_ACTIVE = BIT(3),
302 EEPROM_CHANNEL_RADAR = BIT(4),
303 EEPROM_CHANNEL_WIDE = BIT(5),
304 EEPROM_CHANNEL_DFS = BIT(7),
305};
306
307/**
308 * struct iwl_eeprom_channel - EEPROM channel data
309 * @flags: %EEPROM_CHANNEL_* flags
310 * @max_power_avg: max power (in dBm) on this channel, at most 31 dBm
311 */
312struct iwl_eeprom_channel {
313 u8 flags;
314 s8 max_power_avg;
315} __packed;
316
317
318enum iwl_eeprom_enhanced_txpwr_flags {
319 IWL_EEPROM_ENH_TXP_FL_VALID = BIT(0),
320 IWL_EEPROM_ENH_TXP_FL_BAND_52G = BIT(1),
321 IWL_EEPROM_ENH_TXP_FL_OFDM = BIT(2),
322 IWL_EEPROM_ENH_TXP_FL_40MHZ = BIT(3),
323 IWL_EEPROM_ENH_TXP_FL_HT_AP = BIT(4),
324 IWL_EEPROM_ENH_TXP_FL_RES1 = BIT(5),
325 IWL_EEPROM_ENH_TXP_FL_RES2 = BIT(6),
326 IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE = BIT(7),
327};
328
329/**
330 * iwl_eeprom_enhanced_txpwr structure
331 * @flags: entry flags
332 * @channel: channel number
333 * @chain_a_max_pwr: chain a max power in 1/2 dBm
334 * @chain_b_max_pwr: chain b max power in 1/2 dBm
335 * @chain_c_max_pwr: chain c max power in 1/2 dBm
336 * @delta_20_in_40: 20-in-40 deltas (hi/lo)
337 * @mimo2_max_pwr: mimo2 max power in 1/2 dBm
338 * @mimo3_max_pwr: mimo3 max power in 1/2 dBm
339 *
340 * This structure presents the enhanced regulatory tx power limit layout
341 * in an EEPROM image.
342 */
343struct iwl_eeprom_enhanced_txpwr {
344 u8 flags;
345 u8 channel;
346 s8 chain_a_max;
347 s8 chain_b_max;
348 s8 chain_c_max;
349 u8 delta_20_in_40;
350 s8 mimo2_max;
351 s8 mimo3_max;
352} __packed;
353
354static s8 iwl_get_max_txpwr_half_dbm(const struct iwl_nvm_data *data,
355 struct iwl_eeprom_enhanced_txpwr *txp)
356{
357 s8 result = 0; /* (.5 dBm) */
358
359 /* Take the highest tx power from any valid chains */
360 if (data->valid_tx_ant & ANT_A && txp->chain_a_max > result)
361 result = txp->chain_a_max;
362
363 if (data->valid_tx_ant & ANT_B && txp->chain_b_max > result)
364 result = txp->chain_b_max;
365
366 if (data->valid_tx_ant & ANT_C && txp->chain_c_max > result)
367 result = txp->chain_c_max;
368
369 if ((data->valid_tx_ant == ANT_AB ||
370 data->valid_tx_ant == ANT_BC ||
371 data->valid_tx_ant == ANT_AC) && txp->mimo2_max > result)
372 result = txp->mimo2_max;
373
374 if (data->valid_tx_ant == ANT_ABC && txp->mimo3_max > result)
375 result = txp->mimo3_max;
376
377 return result;
378}
379
380#define EEPROM_TXP_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT)
381#define EEPROM_TXP_ENTRY_LEN sizeof(struct iwl_eeprom_enhanced_txpwr)
382#define EEPROM_TXP_SZ_OFFS (0x00 | INDIRECT_ADDRESS | INDIRECT_TXP_LIMIT_SIZE)
383
384#define TXP_CHECK_AND_PRINT(x) \
385 ((txp->flags & IWL_EEPROM_ENH_TXP_FL_##x) ? # x " " : "")
386
387static void
388iwl_eeprom_enh_txp_read_element(struct iwl_nvm_data *data,
389 struct iwl_eeprom_enhanced_txpwr *txp,
390 int n_channels, s8 max_txpower_avg)
391{
392 int ch_idx;
393 enum ieee80211_band band;
394
395 band = txp->flags & IWL_EEPROM_ENH_TXP_FL_BAND_52G ?
396 IEEE80211_BAND_5GHZ : IEEE80211_BAND_2GHZ;
397
398 for (ch_idx = 0; ch_idx < n_channels; ch_idx++) {
399 struct ieee80211_channel *chan = &data->channels[ch_idx];
400
401 /* update matching channel or from common data only */
402 if (txp->channel != 0 && chan->hw_value != txp->channel)
403 continue;
404
405 /* update matching band only */
406 if (band != chan->band)
407 continue;
408
409 if (chan->max_power < max_txpower_avg &&
410 !(txp->flags & IWL_EEPROM_ENH_TXP_FL_40MHZ))
411 chan->max_power = max_txpower_avg;
412 }
413}
414
415static void iwl_eeprom_enhanced_txpower(struct device *dev,
416 struct iwl_nvm_data *data,
417 const u8 *eeprom, size_t eeprom_size,
418 int n_channels)
419{
420 struct iwl_eeprom_enhanced_txpwr *txp_array, *txp;
421 int idx, entries;
422 __le16 *txp_len;
423 s8 max_txp_avg_halfdbm;
424
425 BUILD_BUG_ON(sizeof(struct iwl_eeprom_enhanced_txpwr) != 8);
426
427 /* the length is in 16-bit words, but we want entries */
428 txp_len = (__le16 *)iwl_eeprom_query_addr(eeprom, eeprom_size,
429 EEPROM_TXP_SZ_OFFS);
430 entries = le16_to_cpup(txp_len) * 2 / EEPROM_TXP_ENTRY_LEN;
431
432 txp_array = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size,
433 EEPROM_TXP_OFFS);
434
435 for (idx = 0; idx < entries; idx++) {
436 txp = &txp_array[idx];
437 /* skip invalid entries */
438 if (!(txp->flags & IWL_EEPROM_ENH_TXP_FL_VALID))
439 continue;
440
441 IWL_DEBUG_EEPROM(dev, "%s %d:\t %s%s%s%s%s%s%s%s (0x%02x)\n",
442 (txp->channel && (txp->flags &
443 IWL_EEPROM_ENH_TXP_FL_COMMON_TYPE)) ?
444 "Common " : (txp->channel) ?
445 "Channel" : "Common",
446 (txp->channel),
447 TXP_CHECK_AND_PRINT(VALID),
448 TXP_CHECK_AND_PRINT(BAND_52G),
449 TXP_CHECK_AND_PRINT(OFDM),
450 TXP_CHECK_AND_PRINT(40MHZ),
451 TXP_CHECK_AND_PRINT(HT_AP),
452 TXP_CHECK_AND_PRINT(RES1),
453 TXP_CHECK_AND_PRINT(RES2),
454 TXP_CHECK_AND_PRINT(COMMON_TYPE),
455 txp->flags);
456 IWL_DEBUG_EEPROM(dev,
457 "\t\t chain_A: %d chain_B: %d chain_C: %d\n",
458 txp->chain_a_max, txp->chain_b_max,
459 txp->chain_c_max);
460 IWL_DEBUG_EEPROM(dev,
461 "\t\t MIMO2: %d MIMO3: %d High 20_on_40: 0x%02x Low 20_on_40: 0x%02x\n",
462 txp->mimo2_max, txp->mimo3_max,
463 ((txp->delta_20_in_40 & 0xf0) >> 4),
464 (txp->delta_20_in_40 & 0x0f));
465
466 max_txp_avg_halfdbm = iwl_get_max_txpwr_half_dbm(data, txp);
467
468 iwl_eeprom_enh_txp_read_element(data, txp, n_channels,
469 DIV_ROUND_UP(max_txp_avg_halfdbm, 2));
470
471 if (max_txp_avg_halfdbm > data->max_tx_pwr_half_dbm)
472 data->max_tx_pwr_half_dbm = max_txp_avg_halfdbm;
473 }
474}
475
476static void iwl_init_band_reference(const struct iwl_cfg *cfg,
477 const u8 *eeprom, size_t eeprom_size,
478 int eeprom_band, int *eeprom_ch_count,
479 const struct iwl_eeprom_channel **ch_info,
480 const u8 **eeprom_ch_array)
481{
482 u32 offset = cfg->eeprom_params->regulatory_bands[eeprom_band - 1];
483
484 offset |= INDIRECT_ADDRESS | INDIRECT_REGULATORY;
485
486 *ch_info = (void *)iwl_eeprom_query_addr(eeprom, eeprom_size, offset);
487
488 switch (eeprom_band) {
489 case 1: /* 2.4GHz band */
490 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
491 *eeprom_ch_array = iwl_eeprom_band_1;
492 break;
493 case 2: /* 4.9GHz band */
494 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
495 *eeprom_ch_array = iwl_eeprom_band_2;
496 break;
497 case 3: /* 5.2GHz band */
498 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
499 *eeprom_ch_array = iwl_eeprom_band_3;
500 break;
501 case 4: /* 5.5GHz band */
502 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
503 *eeprom_ch_array = iwl_eeprom_band_4;
504 break;
505 case 5: /* 5.7GHz band */
506 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
507 *eeprom_ch_array = iwl_eeprom_band_5;
508 break;
509 case 6: /* 2.4GHz ht40 channels */
510 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
511 *eeprom_ch_array = iwl_eeprom_band_6;
512 break;
513 case 7: /* 5 GHz ht40 channels */
514 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
515 *eeprom_ch_array = iwl_eeprom_band_7;
516 break;
517 default:
518 *eeprom_ch_count = 0;
519 *eeprom_ch_array = NULL;
520 WARN_ON(1);
521 }
522}
523
524#define CHECK_AND_PRINT(x) \
525 ((eeprom_ch->flags & EEPROM_CHANNEL_##x) ? # x " " : "")
526
527static void iwl_mod_ht40_chan_info(struct device *dev,
528 struct iwl_nvm_data *data, int n_channels,
529 enum ieee80211_band band, u16 channel,
530 const struct iwl_eeprom_channel *eeprom_ch,
531 u8 clear_ht40_extension_channel)
532{
533 struct ieee80211_channel *chan = NULL;
534 int i;
535
536 for (i = 0; i < n_channels; i++) {
537 if (data->channels[i].band != band)
538 continue;
539 if (data->channels[i].hw_value != channel)
540 continue;
541 chan = &data->channels[i];
542 break;
543 }
544
545 if (!chan)
546 return;
547
548 IWL_DEBUG_EEPROM(dev,
549 "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
550 channel,
551 band == IEEE80211_BAND_5GHZ ? "5.2" : "2.4",
552 CHECK_AND_PRINT(IBSS),
553 CHECK_AND_PRINT(ACTIVE),
554 CHECK_AND_PRINT(RADAR),
555 CHECK_AND_PRINT(WIDE),
556 CHECK_AND_PRINT(DFS),
557 eeprom_ch->flags,
558 eeprom_ch->max_power_avg,
559 ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS) &&
560 !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ? ""
561 : "not ");
562
563 if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
564 chan->flags &= ~clear_ht40_extension_channel;
565}
566
567#define CHECK_AND_PRINT_I(x) \
568 ((eeprom_ch_info[ch_idx].flags & EEPROM_CHANNEL_##x) ? # x " " : "")
569
570static int iwl_init_channel_map(struct device *dev, const struct iwl_cfg *cfg,
571 struct iwl_nvm_data *data,
572 const u8 *eeprom, size_t eeprom_size)
573{
574 int band, ch_idx;
575 const struct iwl_eeprom_channel *eeprom_ch_info;
576 const u8 *eeprom_ch_array;
577 int eeprom_ch_count;
578 int n_channels = 0;
579
580 /*
581 * Loop through the 5 EEPROM bands and add them to the parse list
582 */
583 for (band = 1; band <= 5; band++) {
584 struct ieee80211_channel *channel;
585
586 iwl_init_band_reference(cfg, eeprom, eeprom_size, band,
587 &eeprom_ch_count, &eeprom_ch_info,
588 &eeprom_ch_array);
589
590 /* Loop through each band adding each of the channels */
591 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) {
592 const struct iwl_eeprom_channel *eeprom_ch;
593
594 eeprom_ch = &eeprom_ch_info[ch_idx];
595
596 if (!(eeprom_ch->flags & EEPROM_CHANNEL_VALID)) {
597 IWL_DEBUG_EEPROM(dev,
598 "Ch. %d Flags %x [%sGHz] - No traffic\n",
599 eeprom_ch_array[ch_idx],
600 eeprom_ch_info[ch_idx].flags,
601 (band != 1) ? "5.2" : "2.4");
602 continue;
603 }
604
605 channel = &data->channels[n_channels];
606 n_channels++;
607
608 channel->hw_value = eeprom_ch_array[ch_idx];
609 channel->band = (band == 1) ? IEEE80211_BAND_2GHZ
610 : IEEE80211_BAND_5GHZ;
611 channel->center_freq =
612 ieee80211_channel_to_frequency(
613 channel->hw_value, channel->band);
614
615 /* set no-HT40, will enable as appropriate later */
616 channel->flags = IEEE80211_CHAN_NO_HT40;
617
618 if (!(eeprom_ch->flags & EEPROM_CHANNEL_IBSS))
619 channel->flags |= IEEE80211_CHAN_NO_IR;
620
621 if (!(eeprom_ch->flags & EEPROM_CHANNEL_ACTIVE))
622 channel->flags |= IEEE80211_CHAN_NO_IR;
623
624 if (eeprom_ch->flags & EEPROM_CHANNEL_RADAR)
625 channel->flags |= IEEE80211_CHAN_RADAR;
626
627 /* Initialize regulatory-based run-time data */
628 channel->max_power =
629 eeprom_ch_info[ch_idx].max_power_avg;
630 IWL_DEBUG_EEPROM(dev,
631 "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm): Ad-Hoc %ssupported\n",
632 channel->hw_value,
633 (band != 1) ? "5.2" : "2.4",
634 CHECK_AND_PRINT_I(VALID),
635 CHECK_AND_PRINT_I(IBSS),
636 CHECK_AND_PRINT_I(ACTIVE),
637 CHECK_AND_PRINT_I(RADAR),
638 CHECK_AND_PRINT_I(WIDE),
639 CHECK_AND_PRINT_I(DFS),
640 eeprom_ch_info[ch_idx].flags,
641 eeprom_ch_info[ch_idx].max_power_avg,
642 ((eeprom_ch_info[ch_idx].flags &
643 EEPROM_CHANNEL_IBSS) &&
644 !(eeprom_ch_info[ch_idx].flags &
645 EEPROM_CHANNEL_RADAR))
646 ? "" : "not ");
647 }
648 }
649
650 if (cfg->eeprom_params->enhanced_txpower) {
651 /*
652 * for newer device (6000 series and up)
653 * EEPROM contain enhanced tx power information
654 * driver need to process addition information
655 * to determine the max channel tx power limits
656 */
657 iwl_eeprom_enhanced_txpower(dev, data, eeprom, eeprom_size,
658 n_channels);
659 } else {
660 /* All others use data from channel map */
661 int i;
662
663 data->max_tx_pwr_half_dbm = -128;
664
665 for (i = 0; i < n_channels; i++)
666 data->max_tx_pwr_half_dbm =
667 max_t(s8, data->max_tx_pwr_half_dbm,
668 data->channels[i].max_power * 2);
669 }
670
671 /* Check if we do have HT40 channels */
672 if (cfg->eeprom_params->regulatory_bands[5] ==
673 EEPROM_REGULATORY_BAND_NO_HT40 &&
674 cfg->eeprom_params->regulatory_bands[6] ==
675 EEPROM_REGULATORY_BAND_NO_HT40)
676 return n_channels;
677
678 /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
679 for (band = 6; band <= 7; band++) {
680 enum ieee80211_band ieeeband;
681
682 iwl_init_band_reference(cfg, eeprom, eeprom_size, band,
683 &eeprom_ch_count, &eeprom_ch_info,
684 &eeprom_ch_array);
685
686 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
687 ieeeband = (band == 6) ? IEEE80211_BAND_2GHZ
688 : IEEE80211_BAND_5GHZ;
689
690 /* Loop through each band adding each of the channels */
691 for (ch_idx = 0; ch_idx < eeprom_ch_count; ch_idx++) {
692 /* Set up driver's info for lower half */
693 iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband,
694 eeprom_ch_array[ch_idx],
695 &eeprom_ch_info[ch_idx],
696 IEEE80211_CHAN_NO_HT40PLUS);
697
698 /* Set up driver's info for upper half */
699 iwl_mod_ht40_chan_info(dev, data, n_channels, ieeeband,
700 eeprom_ch_array[ch_idx] + 4,
701 &eeprom_ch_info[ch_idx],
702 IEEE80211_CHAN_NO_HT40MINUS);
703 }
704 }
705
706 return n_channels;
707}
708
709int iwl_init_sband_channels(struct iwl_nvm_data *data,
710 struct ieee80211_supported_band *sband,
711 int n_channels, enum ieee80211_band band)
712{
713 struct ieee80211_channel *chan = &data->channels[0];
714 int n = 0, idx = 0;
715
716 while (idx < n_channels && chan->band != band)
717 chan = &data->channels[++idx];
718
719 sband->channels = &data->channels[idx];
720
721 while (idx < n_channels && chan->band == band) {
722 chan = &data->channels[++idx];
723 n++;
724 }
725
726 sband->n_channels = n;
727
728 return n;
729}
730
731#define MAX_BIT_RATE_40_MHZ 150 /* Mbps */
732#define MAX_BIT_RATE_20_MHZ 72 /* Mbps */
733
734void iwl_init_ht_hw_capab(const struct iwl_cfg *cfg,
735 struct iwl_nvm_data *data,
736 struct ieee80211_sta_ht_cap *ht_info,
737 enum ieee80211_band band,
738 u8 tx_chains, u8 rx_chains)
739{
740 int max_bit_rate = 0;
741
742 tx_chains = hweight8(tx_chains);
743 if (cfg->rx_with_siso_diversity)
744 rx_chains = 1;
745 else
746 rx_chains = hweight8(rx_chains);
747
748 if (!(data->sku_cap_11n_enable) || !cfg->ht_params) {
749 ht_info->ht_supported = false;
750 return;
751 }
752
753 if (data->sku_cap_mimo_disabled)
754 rx_chains = 1;
755
756 ht_info->ht_supported = true;
757 ht_info->cap = IEEE80211_HT_CAP_DSSSCCK40;
758
759 if (cfg->ht_params->stbc) {
760 ht_info->cap |= (1 << IEEE80211_HT_CAP_RX_STBC_SHIFT);
761
762 if (tx_chains > 1)
763 ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
764 }
765
766 if (cfg->ht_params->ldpc)
767 ht_info->cap |= IEEE80211_HT_CAP_LDPC_CODING;
768
769 if (iwlwifi_mod_params.amsdu_size >= IWL_AMSDU_8K)
770 ht_info->cap |= IEEE80211_HT_CAP_MAX_AMSDU;
771
772 ht_info->ampdu_factor = cfg->max_ht_ampdu_exponent;
773 ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_4;
774
775 ht_info->mcs.rx_mask[0] = 0xFF;
776 if (rx_chains >= 2)
777 ht_info->mcs.rx_mask[1] = 0xFF;
778 if (rx_chains >= 3)
779 ht_info->mcs.rx_mask[2] = 0xFF;
780
781 if (cfg->ht_params->ht_greenfield_support)
782 ht_info->cap |= IEEE80211_HT_CAP_GRN_FLD;
783 ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
784
785 max_bit_rate = MAX_BIT_RATE_20_MHZ;
786
787 if (cfg->ht_params->ht40_bands & BIT(band)) {
788 ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
789 ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
790 max_bit_rate = MAX_BIT_RATE_40_MHZ;
791 }
792
793 /* Highest supported Rx data rate */
794 max_bit_rate *= rx_chains;
795 WARN_ON(max_bit_rate & ~IEEE80211_HT_MCS_RX_HIGHEST_MASK);
796 ht_info->mcs.rx_highest = cpu_to_le16(max_bit_rate);
797
798 /* Tx MCS capabilities */
799 ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
800 if (tx_chains != rx_chains) {
801 ht_info->mcs.tx_params |= IEEE80211_HT_MCS_TX_RX_DIFF;
802 ht_info->mcs.tx_params |= ((tx_chains - 1) <<
803 IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT);
804 }
805}
806
807static void iwl_init_sbands(struct device *dev, const struct iwl_cfg *cfg,
808 struct iwl_nvm_data *data,
809 const u8 *eeprom, size_t eeprom_size)
810{
811 int n_channels = iwl_init_channel_map(dev, cfg, data,
812 eeprom, eeprom_size);
813 int n_used = 0;
814 struct ieee80211_supported_band *sband;
815
816 sband = &data->bands[IEEE80211_BAND_2GHZ];
817 sband->band = IEEE80211_BAND_2GHZ;
818 sband->bitrates = &iwl_cfg80211_rates[RATES_24_OFFS];
819 sband->n_bitrates = N_RATES_24;
820 n_used += iwl_init_sband_channels(data, sband, n_channels,
821 IEEE80211_BAND_2GHZ);
822 iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_2GHZ,
823 data->valid_tx_ant, data->valid_rx_ant);
824
825 sband = &data->bands[IEEE80211_BAND_5GHZ];
826 sband->band = IEEE80211_BAND_5GHZ;
827 sband->bitrates = &iwl_cfg80211_rates[RATES_52_OFFS];
828 sband->n_bitrates = N_RATES_52;
829 n_used += iwl_init_sband_channels(data, sband, n_channels,
830 IEEE80211_BAND_5GHZ);
831 iwl_init_ht_hw_capab(cfg, data, &sband->ht_cap, IEEE80211_BAND_5GHZ,
832 data->valid_tx_ant, data->valid_rx_ant);
833
834 if (n_channels != n_used)
835 IWL_ERR_DEV(dev, "EEPROM: used only %d of %d channels\n",
836 n_used, n_channels);
837}
838
839/* EEPROM data functions */
840
841struct iwl_nvm_data *
842iwl_parse_eeprom_data(struct device *dev, const struct iwl_cfg *cfg,
843 const u8 *eeprom, size_t eeprom_size)
844{
845 struct iwl_nvm_data *data;
846 const void *tmp;
847 u16 radio_cfg, sku;
848
849 if (WARN_ON(!cfg || !cfg->eeprom_params))
850 return NULL;
851
852 data = kzalloc(sizeof(*data) +
853 sizeof(struct ieee80211_channel) * IWL_NUM_CHANNELS,
854 GFP_KERNEL);
855 if (!data)
856 return NULL;
857
858 /* get MAC address(es) */
859 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_MAC_ADDRESS);
860 if (!tmp)
861 goto err_free;
862 memcpy(data->hw_addr, tmp, ETH_ALEN);
863 data->n_hw_addrs = iwl_eeprom_query16(eeprom, eeprom_size,
864 EEPROM_NUM_MAC_ADDRESS);
865
866 if (iwl_eeprom_read_calib(eeprom, eeprom_size, data))
867 goto err_free;
868
869 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size, EEPROM_XTAL);
870 if (!tmp)
871 goto err_free;
872 memcpy(data->xtal_calib, tmp, sizeof(data->xtal_calib));
873
874 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size,
875 EEPROM_RAW_TEMPERATURE);
876 if (!tmp)
877 goto err_free;
878 data->raw_temperature = *(__le16 *)tmp;
879
880 tmp = iwl_eeprom_query_addr(eeprom, eeprom_size,
881 EEPROM_KELVIN_TEMPERATURE);
882 if (!tmp)
883 goto err_free;
884 data->kelvin_temperature = *(__le16 *)tmp;
885 data->kelvin_voltage = *((__le16 *)tmp + 1);
886
887 radio_cfg = iwl_eeprom_query16(eeprom, eeprom_size,
888 EEPROM_RADIO_CONFIG);
889 data->radio_cfg_dash = EEPROM_RF_CFG_DASH_MSK(radio_cfg);
890 data->radio_cfg_pnum = EEPROM_RF_CFG_PNUM_MSK(radio_cfg);
891 data->radio_cfg_step = EEPROM_RF_CFG_STEP_MSK(radio_cfg);
892 data->radio_cfg_type = EEPROM_RF_CFG_TYPE_MSK(radio_cfg);
893 data->valid_rx_ant = EEPROM_RF_CFG_RX_ANT_MSK(radio_cfg);
894 data->valid_tx_ant = EEPROM_RF_CFG_TX_ANT_MSK(radio_cfg);
895
896 sku = iwl_eeprom_query16(eeprom, eeprom_size,
897 EEPROM_SKU_CAP);
898 data->sku_cap_11n_enable = sku & EEPROM_SKU_CAP_11N_ENABLE;
899 data->sku_cap_amt_enable = sku & EEPROM_SKU_CAP_AMT_ENABLE;
900 data->sku_cap_band_24GHz_enable = sku & EEPROM_SKU_CAP_BAND_24GHZ;
901 data->sku_cap_band_52GHz_enable = sku & EEPROM_SKU_CAP_BAND_52GHZ;
902 data->sku_cap_ipan_enable = sku & EEPROM_SKU_CAP_IPAN_ENABLE;
903 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_ALL)
904 data->sku_cap_11n_enable = false;
905
906 data->nvm_version = iwl_eeprom_query16(eeprom, eeprom_size,
907 EEPROM_VERSION);
908
909 /* check overrides (some devices have wrong EEPROM) */
910 if (cfg->valid_tx_ant)
911 data->valid_tx_ant = cfg->valid_tx_ant;
912 if (cfg->valid_rx_ant)
913 data->valid_rx_ant = cfg->valid_rx_ant;
914
915 if (!data->valid_tx_ant || !data->valid_rx_ant) {
916 IWL_ERR_DEV(dev, "invalid antennas (0x%x, 0x%x)\n",
917 data->valid_tx_ant, data->valid_rx_ant);
918 goto err_free;
919 }
920
921 iwl_init_sbands(dev, cfg, data, eeprom, eeprom_size);
922
923 return data;
924 err_free:
925 kfree(data);
926 return NULL;
927}
928IWL_EXPORT_SYMBOL(iwl_parse_eeprom_data);
929
930/* helper functions */
931int iwl_nvm_check_version(struct iwl_nvm_data *data,
932 struct iwl_trans *trans)
933{
934 if (data->nvm_version >= trans->cfg->nvm_ver ||
935 data->calib_version >= trans->cfg->nvm_calib_ver) {
936 IWL_DEBUG_INFO(trans, "device EEPROM VER=0x%x, CALIB=0x%x\n",
937 data->nvm_version, data->calib_version);
938 return 0;
939 }
940
941 IWL_ERR(trans,
942 "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
943 data->nvm_version, trans->cfg->nvm_ver,
944 data->calib_version, trans->cfg->nvm_calib_ver);
945 return -EINVAL;
946}
947IWL_EXPORT_SYMBOL(iwl_nvm_check_version);