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iwlwifi: remove apm_ops.stop
[net-next-2.6.git] / drivers / net / wireless / iwlwifi / iwl-eeprom.c
CommitLineData
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 *
1f447808 8 * Copyright(c) 2008 - 2010 Intel Corporation. All rights reserved.
34cf6ff6
AK		 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:
759ef89f 28 * Intel Linux Wireless <ilw@linux.intel.com>
34cf6ff6
AK		 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
1f447808 33 * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved.
34cf6ff6
AK		 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>
5a0e3ad6 66#include <linux/slab.h>
34cf6ff6
AK		 67#include <linux/init.h>
68
69#include <net/mac80211.h>
70
5a36ba0e 71#include "iwl-commands.h"
3e0d4cb1 72#include "iwl-dev.h"
34cf6ff6 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 */
110const 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 */
115static const u8 iwl_eeprom_band_2[] = { /* 4915-5080MHz */
116 183, 184, 185, 187, 188, 189, 192, 196, 7, 8, 11, 12, 16
117};
118
119static const u8 iwl_eeprom_band_3[] = { /* 5170-5320MHz */
120 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
121};
122
123static const u8 iwl_eeprom_band_4[] = { /* 5500-5700MHz */
124 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
125};
126
127static const u8 iwl_eeprom_band_5[] = { /* 5725-5825MHz */
128 145, 149, 153, 157, 161, 165
129};
130
7aafef1c 131static const u8 iwl_eeprom_band_6[] = { /* 2.4 ht40 channel */
bf85ea4f
AK		 132 1, 2, 3, 4, 5, 6, 7
133};
134
7aafef1c 135static const u8 iwl_eeprom_band_7[] = { /* 5.2 ht40 channel */
bf85ea4f
AK		 136 36, 44, 52, 60, 100, 108, 116, 124, 132, 149, 157
137};
138
ab9fd1bf
WYG		 139/**
140 * struct iwl_txpwr_section: eeprom section information
141 * @offset: indirect address into eeprom image
142 * @count: number of "struct iwl_eeprom_enhanced_txpwr" in this section
143 * @band: band type for the section
144 * @is_common - true: common section, false: channel section
145 * @is_cck - true: cck section, false: not cck section
146 * @is_ht_40 - true: all channel in the section are HT40 channel,
147 * false: legacy or HT 20 MHz
148 * ignore if it is common section
149 * @iwl_eeprom_section_channel: channel array in the section,
150 * ignore if common section
151 */
152struct iwl_txpwr_section {
153 u32 offset;
154 u8 count;
155 enum ieee80211_band band;
156 bool is_common;
157 bool is_cck;
158 bool is_ht40;
159 u8 iwl_eeprom_section_channel[EEPROM_MAX_TXPOWER_SECTION_ELEMENTS];
160};
161
162/**
163 * section 1 - 3 are regulatory tx power apply to all channels based on
164 * modulation: CCK, OFDM
165 * Band: 2.4GHz, 5.2GHz
166 * section 4 - 10 are regulatory tx power apply to specified channels
167 * For example:
168 * 1L - Channel 1 Legacy
169 * 1HT - Channel 1 HT
170 * (1,+1) - Channel 1 HT40 "_above_"
171 *
172 * Section 1: all CCK channels
173 * Section 2: all 2.4 GHz OFDM (Legacy, HT and HT40) channels
174 * Section 3: all 5.2 GHz OFDM (Legacy, HT and HT40) channels
175 * Section 4: 2.4 GHz 20MHz channels: 1L, 1HT, 2L, 2HT, 10L, 10HT, 11L, 11HT
176 * Section 5: 2.4 GHz 40MHz channels: (1,+1) (2,+1) (6,+1) (7,+1) (9,+1)
177 * Section 6: 5.2 GHz 20MHz channels: 36L, 64L, 100L, 36HT, 64HT, 100HT
178 * Section 7: 5.2 GHz 40MHz channels: (36,+1) (60,+1) (100,+1)
179 * Section 8: 2.4 GHz channel: 13L, 13HT
180 * Section 9: 2.4 GHz channel: 140L, 140HT
181 * Section 10: 2.4 GHz 40MHz channels: (132,+1) (44,+1)
182 *
183 */
184static const struct iwl_txpwr_section enhinfo[] = {
185 { EEPROM_LB_CCK_20_COMMON, 1, IEEE80211_BAND_2GHZ, true, true, false },
186 { EEPROM_LB_OFDM_COMMON, 3, IEEE80211_BAND_2GHZ, true, false, false },
187 { EEPROM_HB_OFDM_COMMON, 3, IEEE80211_BAND_5GHZ, true, false, false },
188 { EEPROM_LB_OFDM_20_BAND, 8, IEEE80211_BAND_2GHZ,
189 false, false, false,
190 {1, 1, 2, 2, 10, 10, 11, 11 } },
191 { EEPROM_LB_OFDM_HT40_BAND, 5, IEEE80211_BAND_2GHZ,
192 false, false, true,
193 { 1, 2, 6, 7, 9 } },
194 { EEPROM_HB_OFDM_20_BAND, 6, IEEE80211_BAND_5GHZ,
195 false, false, false,
196 { 36, 64, 100, 36, 64, 100 } },
197 { EEPROM_HB_OFDM_HT40_BAND, 3, IEEE80211_BAND_5GHZ,
198 false, false, true,
199 { 36, 60, 100 } },
200 { EEPROM_LB_OFDM_20_CHANNEL_13, 2, IEEE80211_BAND_2GHZ,
201 false, false, false,
202 { 13, 13 } },
203 { EEPROM_HB_OFDM_20_CHANNEL_140, 2, IEEE80211_BAND_5GHZ,
204 false, false, false,
205 { 140, 140 } },
206 { EEPROM_HB_OFDM_HT40_BAND_1, 2, IEEE80211_BAND_5GHZ,
207 false, false, true,
208 { 132, 44 } },
209};
210
34cf6ff6
AK		 211/******************************************************************************
212 *
213 * EEPROM related functions
214 *
215******************************************************************************/
216
d3f5ba95 217static int iwl_eeprom_verify_signature(struct iwl_priv *priv)
34cf6ff6 218{
f41bb897
WYG		 219 u32 gp = iwl_read32(priv, CSR_EEPROM_GP) & CSR_EEPROM_GP_VALID_MSK;
220 int ret = 0;
221
222 IWL_DEBUG_INFO(priv, "EEPROM signature=0x%08x\n", gp);
223 switch (gp) {
224 case CSR_EEPROM_GP_BAD_SIG_EEP_GOOD_SIG_OTP:
225 if (priv->nvm_device_type != NVM_DEVICE_TYPE_OTP) {
226 IWL_ERR(priv, "EEPROM with bad signature: 0x%08x\n",
227 gp);
228 ret = -ENOENT;
229 }
230 break;
231 case CSR_EEPROM_GP_GOOD_SIG_EEP_LESS_THAN_4K:
232 case CSR_EEPROM_GP_GOOD_SIG_EEP_MORE_THAN_4K:
233 if (priv->nvm_device_type != NVM_DEVICE_TYPE_EEPROM) {
234 IWL_ERR(priv, "OTP with bad signature: 0x%08x\n", gp);
235 ret = -ENOENT;
236 }
237 break;
238 case CSR_EEPROM_GP_BAD_SIGNATURE_BOTH_EEP_AND_OTP:
239 default:
240 IWL_ERR(priv, "bad EEPROM/OTP signature, type=%s, "
241 "EEPROM_GP=0x%08x\n",
242 (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
243 ? "OTP" : "EEPROM", gp);
244 ret = -ENOENT;
245 break;
34cf6ff6 246 }
f41bb897 247 return ret;
34cf6ff6 248}
34cf6ff6 249
415e4993
WYG		 250static void iwl_set_otp_access(struct iwl_priv *priv, enum iwl_access_mode mode)
251{
252 u32 otpgp;
253
254 otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
255 if (mode == IWL_OTP_ACCESS_ABSOLUTE)
256 iwl_clear_bit(priv, CSR_OTP_GP_REG,
257 CSR_OTP_GP_REG_OTP_ACCESS_MODE);
258 else
259 iwl_set_bit(priv, CSR_OTP_GP_REG,
260 CSR_OTP_GP_REG_OTP_ACCESS_MODE);
261}
262
0848e297
WYG		 263static int iwlcore_get_nvm_type(struct iwl_priv *priv)
264{
265 u32 otpgp;
266 int nvm_type;
267
268 /* OTP only valid for CP/PP and after */
269 switch (priv->hw_rev & CSR_HW_REV_TYPE_MSK) {
b23a0524
WYG		 270 case CSR_HW_REV_TYPE_NONE:
271 IWL_ERR(priv, "Unknown hardware type\n");
272 return -ENOENT;
0848e297
WYG		 273 case CSR_HW_REV_TYPE_3945:
274 case CSR_HW_REV_TYPE_4965:
275 case CSR_HW_REV_TYPE_5300:
276 case CSR_HW_REV_TYPE_5350:
277 case CSR_HW_REV_TYPE_5100:
278 case CSR_HW_REV_TYPE_5150:
279 nvm_type = NVM_DEVICE_TYPE_EEPROM;
280 break;
281 default:
282 otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
283 if (otpgp & CSR_OTP_GP_REG_DEVICE_SELECT)
284 nvm_type = NVM_DEVICE_TYPE_OTP;
285 else
286 nvm_type = NVM_DEVICE_TYPE_EEPROM;
287 break;
288 }
289 return nvm_type;
290}
291
34cf6ff6
AK		 292/*
293 * The device's EEPROM semaphore prevents conflicts between driver and uCode
294 * when accessing the EEPROM; each access is a series of pulses to/from the
295 * EEPROM chip, not a single event, so even reads could conflict if they
296 * weren't arbitrated by the semaphore.
297 */
c79dd5b5 298int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv)
34cf6ff6
AK		 299{
300 u16 count;
301 int ret;
302
303 for (count = 0; count < EEPROM_SEM_RETRY_LIMIT; count++) {
304 /* Request semaphore */
3395f6e9
TW		 305 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
306 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
34cf6ff6
AK		 307
308 /* See if we got it */
1739d332
AK		 309 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
310 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
73d7b5ac
ZY		 311 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM,
312 EEPROM_SEM_TIMEOUT);
34cf6ff6 313 if (ret >= 0) {
e1623446 314 IWL_DEBUG_IO(priv, "Acquired semaphore after %d tries.\n",
34cf6ff6
AK		 315 count+1);
316 return ret;
317 }
318 }
319
320 return ret;
321}
322EXPORT_SYMBOL(iwlcore_eeprom_acquire_semaphore);
323
c79dd5b5 324void iwlcore_eeprom_release_semaphore(struct iwl_priv *priv)
34cf6ff6 325{
3395f6e9 326 iwl_clear_bit(priv, CSR_HW_IF_CONFIG_REG,
34cf6ff6
AK		 327 CSR_HW_IF_CONFIG_REG_BIT_EEPROM_OWN_SEM);
328
329}
330EXPORT_SYMBOL(iwlcore_eeprom_release_semaphore);
331
073d3f5f
TW		 332const u8 *iwlcore_eeprom_query_addr(const struct iwl_priv *priv, size_t offset)
333{
7cb1b088 334 BUG_ON(offset >= priv->cfg->base_params->eeprom_size);
073d3f5f
TW		 335 return &priv->eeprom[offset];
336}
337EXPORT_SYMBOL(iwlcore_eeprom_query_addr);
34cf6ff6 338
0848e297
WYG		 339static int iwl_init_otp_access(struct iwl_priv *priv)
340{
341 int ret;
342
343 /* Enable 40MHz radio clock */
344 _iwl_write32(priv, CSR_GP_CNTRL,
345 _iwl_read32(priv, CSR_GP_CNTRL) |
346 CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
347
348 /* wait for clock to be ready */
1739d332
AK		 349 ret = iwl_poll_bit(priv, CSR_GP_CNTRL,
350 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
0848e297
WYG		 351 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
352 25000);
353 if (ret < 0)
354 IWL_ERR(priv, "Time out access OTP\n");
355 else {
d77b034f
RC		 356 iwl_set_bits_prph(priv, APMG_PS_CTRL_REG,
357 APMG_PS_CTRL_VAL_RESET_REQ);
358 udelay(5);
359 iwl_clear_bits_prph(priv, APMG_PS_CTRL_REG,
360 APMG_PS_CTRL_VAL_RESET_REQ);
32004ee4
WYG		 361
362 /*
363 * CSR auto clock gate disable bit -
364 * this is only applicable for HW with OTP shadow RAM
365 */
7cb1b088 366 if (priv->cfg->base_params->shadow_ram_support)
32004ee4
WYG		 367 iwl_set_bit(priv, CSR_DBG_LINK_PWR_MGMT_REG,
368 CSR_RESET_LINK_PWR_MGMT_DISABLED);
0848e297
WYG		 369 }
370 return ret;
371}
372
af6b8ee3 373static int iwl_read_otp_word(struct iwl_priv *priv, u16 addr, __le16 *eeprom_data)
415e4993
WYG		 374{
375 int ret = 0;
376 u32 r;
377 u32 otpgp;
378
379 _iwl_write32(priv, CSR_EEPROM_REG,
380 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
1739d332
AK		 381 ret = iwl_poll_bit(priv, CSR_EEPROM_REG,
382 CSR_EEPROM_REG_READ_VALID_MSK,
415e4993
WYG		 383 CSR_EEPROM_REG_READ_VALID_MSK,
384 IWL_EEPROM_ACCESS_TIMEOUT);
385 if (ret < 0) {
386 IWL_ERR(priv, "Time out reading OTP[%d]\n", addr);
387 return ret;
388 }
389 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
390 /* check for ECC errors: */
391 otpgp = iwl_read32(priv, CSR_OTP_GP_REG);
392 if (otpgp & CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK) {
393 /* stop in this case */
394 /* set the uncorrectable OTP ECC bit for acknowledgement */
395 iwl_set_bit(priv, CSR_OTP_GP_REG,
396 CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
397 IWL_ERR(priv, "Uncorrectable OTP ECC error, abort OTP read\n");
398 return -EINVAL;
399 }
400 if (otpgp & CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK) {
401 /* continue in this case */
402 /* set the correctable OTP ECC bit for acknowledgement */
403 iwl_set_bit(priv, CSR_OTP_GP_REG,
404 CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK);
405 IWL_ERR(priv, "Correctable OTP ECC error, continue read\n");
406 }
af6b8ee3 407 *eeprom_data = cpu_to_le16(r >> 16);
415e4993
WYG		 408 return 0;
409}
410
411/*
412 * iwl_is_otp_empty: check for empty OTP
413 */
414static bool iwl_is_otp_empty(struct iwl_priv *priv)
415{
af6b8ee3
JB		 416 u16 next_link_addr = 0;
417 __le16 link_value;
415e4993
WYG		 418 bool is_empty = false;
419
420 /* locate the beginning of OTP link list */
421 if (!iwl_read_otp_word(priv, next_link_addr, &link_value)) {
422 if (!link_value) {
423 IWL_ERR(priv, "OTP is empty\n");
424 is_empty = true;
425 }
426 } else {
427 IWL_ERR(priv, "Unable to read first block of OTP list.\n");
428 is_empty = true;
429 }
430
431 return is_empty;
432}
433
434
435/*
436 * iwl_find_otp_image: find EEPROM image in OTP
437 * finding the OTP block that contains the EEPROM image.
438 * the last valid block on the link list (the block _before_ the last block)
439 * is the block we should read and used to configure the device.
440 * If all the available OTP blocks are full, the last block will be the block
441 * we should read and used to configure the device.
442 * only perform this operation if shadow RAM is disabled
443 */
444static int iwl_find_otp_image(struct iwl_priv *priv,
445 u16 *validblockaddr)
446{
af6b8ee3
JB		 447 u16 next_link_addr = 0, valid_addr;
448 __le16 link_value = 0;
415e4993
WYG		 449 int usedblocks = 0;
450
451 /* set addressing mode to absolute to traverse the link list */
452 iwl_set_otp_access(priv, IWL_OTP_ACCESS_ABSOLUTE);
453
454 /* checking for empty OTP or error */
455 if (iwl_is_otp_empty(priv))
456 return -EINVAL;
457
458 /*
459 * start traverse link list
460 * until reach the max number of OTP blocks
461 * different devices have different number of OTP blocks
462 */
463 do {
464 /* save current valid block address
465 * check for more block on the link list
466 */
467 valid_addr = next_link_addr;
af6b8ee3 468 next_link_addr = le16_to_cpu(link_value) * sizeof(u16);
415e4993
WYG		 469 IWL_DEBUG_INFO(priv, "OTP blocks %d addr 0x%x\n",
470 usedblocks, next_link_addr);
471 if (iwl_read_otp_word(priv, next_link_addr, &link_value))
472 return -EINVAL;
473 if (!link_value) {
474 /*
2facba76 475 * reach the end of link list, return success and
415e4993
WYG		 476 * set address point to the starting address
477 * of the image
478 */
2facba76
JS		 479 *validblockaddr = valid_addr;
480 /* skip first 2 bytes (link list pointer) */
481 *validblockaddr += 2;
482 return 0;
415e4993
WYG		 483 }
484 /* more in the link list, continue */
485 usedblocks++;
7cb1b088 486 } while (usedblocks <= priv->cfg->base_params->max_ll_items);
2facba76
JS		 487
488 /* OTP has no valid blocks */
489 IWL_DEBUG_INFO(priv, "OTP has no valid blocks\n");
490 return -EINVAL;
415e4993
WYG		 491}
492
34cf6ff6
AK		 493/**
494 * iwl_eeprom_init - read EEPROM contents
495 *
496 * Load the EEPROM contents from adapter into priv->eeprom
497 *
498 * NOTE: This routine uses the non-debug IO access functions.
499 */
c79dd5b5 500int iwl_eeprom_init(struct iwl_priv *priv)
34cf6ff6 501{
af6b8ee3 502 __le16 *e;
3395f6e9 503 u32 gp = iwl_read32(priv, CSR_EEPROM_GP);
0848e297 504 int sz;
34cf6ff6 505 int ret;
34cf6ff6 506 u16 addr;
415e4993
WYG		 507 u16 validblockaddr = 0;
508 u16 cache_addr = 0;
0848e297
WYG		 509
510 priv->nvm_device_type = iwlcore_get_nvm_type(priv);
b23a0524
WYG		 511 if (priv->nvm_device_type == -ENOENT)
512 return -ENOENT;
073d3f5f 513 /* allocate eeprom */
7cb1b088
WYG		 514 sz = priv->cfg->base_params->eeprom_size;
515 IWL_DEBUG_INFO(priv, "NVM size = %d\n", sz);
073d3f5f
TW		 516 priv->eeprom = kzalloc(sz, GFP_KERNEL);
517 if (!priv->eeprom) {
518 ret = -ENOMEM;
519 goto alloc_err;
520 }
af6b8ee3 521 e = (__le16 *)priv->eeprom;
34cf6ff6 522
f8701fe3 523 priv->cfg->ops->lib->apm_ops.init(priv);
e43ab94d 524
d3f5ba95 525 ret = iwl_eeprom_verify_signature(priv);
073d3f5f 526 if (ret < 0) {
15b1687c 527 IWL_ERR(priv, "EEPROM not found, EEPROM_GP=0x%08x\n", gp);
073d3f5f
TW		 528 ret = -ENOENT;
529 goto err;
34cf6ff6
AK		 530 }
531
532 /* Make sure driver (instead of uCode) is allowed to read EEPROM */
533 ret = priv->cfg->ops->lib->eeprom_ops.acquire_semaphore(priv);
534 if (ret < 0) {
15b1687c 535 IWL_ERR(priv, "Failed to acquire EEPROM semaphore.\n");
073d3f5f
TW		 536 ret = -ENOENT;
537 goto err;
34cf6ff6 538 }
88521364 539
e43ab94d 540 if (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP) {
88521364 541
0848e297
WYG		 542 ret = iwl_init_otp_access(priv);
543 if (ret) {
544 IWL_ERR(priv, "Failed to initialize OTP access.\n");
545 ret = -ENOENT;
415e4993 546 goto done;
0848e297
WYG		 547 }
548 _iwl_write32(priv, CSR_EEPROM_GP,
549 iwl_read32(priv, CSR_EEPROM_GP) &
550 ~CSR_EEPROM_GP_IF_OWNER_MSK);
415e4993
WYG		 551
552 iwl_set_bit(priv, CSR_OTP_GP_REG,
0848e297
WYG		 553 CSR_OTP_GP_REG_ECC_CORR_STATUS_MSK |
554 CSR_OTP_GP_REG_ECC_UNCORR_STATUS_MSK);
415e4993 555 /* traversing the linked list if no shadow ram supported */
7cb1b088 556 if (!priv->cfg->base_params->shadow_ram_support) {
415e4993
WYG		 557 if (iwl_find_otp_image(priv, &validblockaddr)) {
558 ret = -ENOENT;
0848e297
WYG		 559 goto done;
560 }
415e4993
WYG		 561 }
562 for (addr = validblockaddr; addr < validblockaddr + sz;
563 addr += sizeof(u16)) {
af6b8ee3 564 __le16 eeprom_data;
415e4993
WYG		 565
566 ret = iwl_read_otp_word(priv, addr, &eeprom_data);
567 if (ret)
0848e297 568 goto done;
415e4993
WYG		 569 e[cache_addr / 2] = eeprom_data;
570 cache_addr += sizeof(u16);
0848e297
WYG		 571 }
572 } else {
573 /* eeprom is an array of 16bit values */
574 for (addr = 0; addr < sz; addr += sizeof(u16)) {
575 u32 r;
576
577 _iwl_write32(priv, CSR_EEPROM_REG,
578 CSR_EEPROM_REG_MSK_ADDR & (addr << 1));
579
1739d332
AK		 580 ret = iwl_poll_bit(priv, CSR_EEPROM_REG,
581 CSR_EEPROM_REG_READ_VALID_MSK,
0848e297
WYG		 582 CSR_EEPROM_REG_READ_VALID_MSK,
583 IWL_EEPROM_ACCESS_TIMEOUT);
584 if (ret < 0) {
585 IWL_ERR(priv, "Time out reading EEPROM[%d]\n", addr);
586 goto done;
587 }
588 r = _iwl_read_direct32(priv, CSR_EEPROM_REG);
af6b8ee3 589 e[addr / 2] = cpu_to_le16(r >> 16);
34cf6ff6 590 }
34cf6ff6 591 }
d1358f62
JB		 592
593 IWL_DEBUG_INFO(priv, "NVM Type: %s, version: 0x%x\n",
594 (priv->nvm_device_type == NVM_DEVICE_TYPE_OTP)
595 ? "OTP" : "EEPROM",
596 iwl_eeprom_query16(priv, EEPROM_VERSION));
597
34cf6ff6 598 ret = 0;
34cf6ff6
AK		 599done:
600 priv->cfg->ops->lib->eeprom_ops.release_semaphore(priv);
d1358f62 601
073d3f5f
TW		 602err:
603 if (ret)
0848e297 604 iwl_eeprom_free(priv);
f8701fe3 605 /* Reset chip to save power until we load uCode during "up". */
14e8e4af 606 iwl_apm_stop(priv);
073d3f5f 607alloc_err:
34cf6ff6
AK		 608 return ret;
609}
610EXPORT_SYMBOL(iwl_eeprom_init);
611
073d3f5f
TW		 612void iwl_eeprom_free(struct iwl_priv *priv)
613{
3ac7f146 614 kfree(priv->eeprom);
073d3f5f
TW		 615 priv->eeprom = NULL;
616}
617EXPORT_SYMBOL(iwl_eeprom_free);
618
8614f360
TW		 619int iwl_eeprom_check_version(struct iwl_priv *priv)
620{
0ef2ca67
TW		 621 u16 eeprom_ver;
622 u16 calib_ver;
623
624 eeprom_ver = iwl_eeprom_query16(priv, EEPROM_VERSION);
625 calib_ver = priv->cfg->ops->lib->eeprom_ops.calib_version(priv);
626
627 if (eeprom_ver < priv->cfg->eeprom_ver ||
628 calib_ver < priv->cfg->eeprom_calib_ver)
629 goto err;
630
178d1596
WYG		 631 IWL_INFO(priv, "device EEPROM VER=0x%x, CALIB=0x%x\n",
632 eeprom_ver, calib_ver);
633
0ef2ca67
TW		 634 return 0;
635err:
9906a07e 636 IWL_ERR(priv, "Unsupported (too old) EEPROM VER=0x%x < 0x%x CALIB=0x%x < 0x%x\n",
0ef2ca67
TW		 637 eeprom_ver, priv->cfg->eeprom_ver,
638 calib_ver, priv->cfg->eeprom_calib_ver);
639 return -EINVAL;
640
8614f360
TW		 641}
642EXPORT_SYMBOL(iwl_eeprom_check_version);
073d3f5f
TW		 643
644const u8 *iwl_eeprom_query_addr(const struct iwl_priv *priv, size_t offset)
645{
646 return priv->cfg->ops->lib->eeprom_ops.query_addr(priv, offset);
647}
648EXPORT_SYMBOL(iwl_eeprom_query_addr);
649
650u16 iwl_eeprom_query16(const struct iwl_priv *priv, size_t offset)
651{
0848e297
WYG		 652 if (!priv->eeprom)
653 return 0;
073d3f5f
TW		 654 return (u16)priv->eeprom[offset] | ((u16)priv->eeprom[offset + 1] << 8);
655}
656EXPORT_SYMBOL(iwl_eeprom_query16);
34cf6ff6 657
c79dd5b5 658void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac)
34cf6ff6 659{
073d3f5f
TW		 660 const u8 *addr = priv->cfg->ops->lib->eeprom_ops.query_addr(priv,
661 EEPROM_MAC_ADDRESS);
662 memcpy(mac, addr, ETH_ALEN);
34cf6ff6
AK		 663}
664EXPORT_SYMBOL(iwl_eeprom_get_mac);
665
bf85ea4f 666static void iwl_init_band_reference(const struct iwl_priv *priv,
073d3f5f
TW		 667 int eep_band, int *eeprom_ch_count,
668 const struct iwl_eeprom_channel **eeprom_ch_info,
669 const u8 **eeprom_ch_index)
bf85ea4f 670{
073d3f5f
TW		 671 u32 offset = priv->cfg->ops->lib->
672 eeprom_ops.regulatory_bands[eep_band - 1];
673 switch (eep_band) {
bf85ea4f
AK		 674 case 1: /* 2.4GHz band */
675 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_1);
073d3f5f
TW		 676 *eeprom_ch_info = (struct iwl_eeprom_channel *)
677 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 678 *eeprom_ch_index = iwl_eeprom_band_1;
679 break;
680 case 2: /* 4.9GHz band */
681 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_2);
073d3f5f
TW		 682 *eeprom_ch_info = (struct iwl_eeprom_channel *)
683 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 684 *eeprom_ch_index = iwl_eeprom_band_2;
685 break;
686 case 3: /* 5.2GHz band */
687 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_3);
073d3f5f
TW		 688 *eeprom_ch_info = (struct iwl_eeprom_channel *)
689 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 690 *eeprom_ch_index = iwl_eeprom_band_3;
691 break;
692 case 4: /* 5.5GHz band */
693 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_4);
073d3f5f
TW		 694 *eeprom_ch_info = (struct iwl_eeprom_channel *)
695 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 696 *eeprom_ch_index = iwl_eeprom_band_4;
697 break;
698 case 5: /* 5.7GHz band */
699 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_5);
073d3f5f
TW		 700 *eeprom_ch_info = (struct iwl_eeprom_channel *)
701 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 702 *eeprom_ch_index = iwl_eeprom_band_5;
703 break;
7aafef1c 704 case 6: /* 2.4GHz ht40 channels */
bf85ea4f 705 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_6);
073d3f5f
TW		 706 *eeprom_ch_info = (struct iwl_eeprom_channel *)
707 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 708 *eeprom_ch_index = iwl_eeprom_band_6;
709 break;
7aafef1c 710 case 7: /* 5 GHz ht40 channels */
bf85ea4f 711 *eeprom_ch_count = ARRAY_SIZE(iwl_eeprom_band_7);
073d3f5f
TW		 712 *eeprom_ch_info = (struct iwl_eeprom_channel *)
713 iwl_eeprom_query_addr(priv, offset);
bf85ea4f
AK		 714 *eeprom_ch_index = iwl_eeprom_band_7;
715 break;
716 default:
717 BUG();
718 return;
719 }
720}
721
722#define CHECK_AND_PRINT(x) ((eeprom_ch->flags & EEPROM_CHANNEL_##x) \
723 ? # x " " : "")
724
725/**
3b24716f 726 * iwl_mod_ht40_chan_info - Copy ht40 channel info into driver's priv.
bf85ea4f
AK		 727 *
728 * Does not set up a command, or touch hardware.
729 */
3b24716f 730static int iwl_mod_ht40_chan_info(struct iwl_priv *priv,
bf85ea4f 731 enum ieee80211_band band, u16 channel,
073d3f5f 732 const struct iwl_eeprom_channel *eeprom_ch,
3b24716f 733 u8 clear_ht40_extension_channel)
bf85ea4f
AK		 734{
735 struct iwl_channel_info *ch_info;
736
737 ch_info = (struct iwl_channel_info *)
8622e705 738 iwl_get_channel_info(priv, band, channel);
bf85ea4f
AK		 739
740 if (!is_channel_valid(ch_info))
741 return -1;
742
7aafef1c 743 IWL_DEBUG_INFO(priv, "HT40 Ch. %d [%sGHz] %s%s%s%s%s(0x%02x %ddBm):"
630fe9b6 744 " Ad-Hoc %ssupported\n",
bf85ea4f
AK		 745 ch_info->channel,
746 is_channel_a_band(ch_info) ?
747 "5.2" : "2.4",
748 CHECK_AND_PRINT(IBSS),
749 CHECK_AND_PRINT(ACTIVE),
750 CHECK_AND_PRINT(RADAR),
751 CHECK_AND_PRINT(WIDE),
bf85ea4f
AK		 752 CHECK_AND_PRINT(DFS),
753 eeprom_ch->flags,
754 eeprom_ch->max_power_avg,
755 ((eeprom_ch->flags & EEPROM_CHANNEL_IBSS)
756 && !(eeprom_ch->flags & EEPROM_CHANNEL_RADAR)) ?
757 "" : "not ");
758
7aafef1c
WYG		 759 ch_info->ht40_eeprom = *eeprom_ch;
760 ch_info->ht40_max_power_avg = eeprom_ch->max_power_avg;
7aafef1c 761 ch_info->ht40_flags = eeprom_ch->flags;
6c3069b1
RC		 762 if (eeprom_ch->flags & EEPROM_CHANNEL_VALID)
763 ch_info->ht40_extension_channel &= ~clear_ht40_extension_channel;
bf85ea4f
AK		 764
765 return 0;
766}
767
ab9fd1bf
WYG		 768/**
769 * iwl_get_max_txpower_avg - get the highest tx power from all chains.
770 * find the highest tx power from all chains for the channel
771 */
772static s8 iwl_get_max_txpower_avg(struct iwl_priv *priv,
ae16fc3c
WYG		 773 struct iwl_eeprom_enhanced_txpwr *enhanced_txpower,
774 int element, s8 *max_txpower_in_half_dbm)
ab9fd1bf
WYG		 775{
776 s8 max_txpower_avg = 0; /* (dBm) */
777
778 IWL_DEBUG_INFO(priv, "%d - "
779 "chain_a: %d dB chain_b: %d dB "
780 "chain_c: %d dB mimo2: %d dB mimo3: %d dB\n",
781 element,
782 enhanced_txpower[element].chain_a_max >> 1,
783 enhanced_txpower[element].chain_b_max >> 1,
784 enhanced_txpower[element].chain_c_max >> 1,
785 enhanced_txpower[element].mimo2_max >> 1,
786 enhanced_txpower[element].mimo3_max >> 1);
787 /* Take the highest tx power from any valid chains */
788 if ((priv->cfg->valid_tx_ant & ANT_A) &&
789 (enhanced_txpower[element].chain_a_max > max_txpower_avg))
790 max_txpower_avg = enhanced_txpower[element].chain_a_max;
791 if ((priv->cfg->valid_tx_ant & ANT_B) &&
792 (enhanced_txpower[element].chain_b_max > max_txpower_avg))
793 max_txpower_avg = enhanced_txpower[element].chain_b_max;
794 if ((priv->cfg->valid_tx_ant & ANT_C) &&
795 (enhanced_txpower[element].chain_c_max > max_txpower_avg))
796 max_txpower_avg = enhanced_txpower[element].chain_c_max;
797 if (((priv->cfg->valid_tx_ant == ANT_AB) |
798 (priv->cfg->valid_tx_ant == ANT_BC) |
799 (priv->cfg->valid_tx_ant == ANT_AC)) &&
800 (enhanced_txpower[element].mimo2_max > max_txpower_avg))
801 max_txpower_avg = enhanced_txpower[element].mimo2_max;
802 if ((priv->cfg->valid_tx_ant == ANT_ABC) &&
803 (enhanced_txpower[element].mimo3_max > max_txpower_avg))
804 max_txpower_avg = enhanced_txpower[element].mimo3_max;
805
ae16fc3c
WYG		 806 /*
807 * max. tx power in EEPROM is in 1/2 dBm format
808 * convert from 1/2 dBm to dBm (round-up convert)
809 * but we also do not want to loss 1/2 dBm resolution which
810 * will impact performance
ab9fd1bf 811 */
ae16fc3c
WYG		 812 *max_txpower_in_half_dbm = max_txpower_avg;
813 return (max_txpower_avg & 0x01) + (max_txpower_avg >> 1);
ab9fd1bf
WYG		 814}
815
816/**
817 * iwl_update_common_txpower: update channel tx power
818 * update tx power per band based on EEPROM enhanced tx power info.
819 */
820static s8 iwl_update_common_txpower(struct iwl_priv *priv,
821 struct iwl_eeprom_enhanced_txpwr *enhanced_txpower,
ae16fc3c 822 int section, int element, s8 *max_txpower_in_half_dbm)
ab9fd1bf
WYG		 823{
824 struct iwl_channel_info *ch_info;
825 int ch;
826 bool is_ht40 = false;
827 s8 max_txpower_avg; /* (dBm) */
828
829 /* it is common section, contain all type (Legacy, HT and HT40)
830 * based on the element in the section to determine
831 * is it HT 40 or not
832 */
833 if (element == EEPROM_TXPOWER_COMMON_HT40_INDEX)
834 is_ht40 = true;
835 max_txpower_avg =
ae16fc3c
WYG		 836 iwl_get_max_txpower_avg(priv, enhanced_txpower,
837 element, max_txpower_in_half_dbm);
838
ab9fd1bf
WYG		 839 ch_info = priv->channel_info;
840
841 for (ch = 0; ch < priv->channel_count; ch++) {
842 /* find matching band and update tx power if needed */
843 if ((ch_info->band == enhinfo[section].band) &&
ae16fc3c
WYG		 844 (ch_info->max_power_avg < max_txpower_avg) &&
845 (!is_ht40)) {
ab9fd1bf
WYG		 846 /* Update regulatory-based run-time data */
847 ch_info->max_power_avg = ch_info->curr_txpow =
ae16fc3c 848 max_txpower_avg;
ab9fd1bf
WYG		 849 ch_info->scan_power = max_txpower_avg;
850 }
851 if ((ch_info->band == enhinfo[section].band) && is_ht40 &&
ab9fd1bf
WYG		 852 (ch_info->ht40_max_power_avg < max_txpower_avg)) {
853 /* Update regulatory-based run-time data */
854 ch_info->ht40_max_power_avg = max_txpower_avg;
ab9fd1bf
WYG		 855 }
856 ch_info++;
857 }
858 return max_txpower_avg;
859}
860
861/**
862 * iwl_update_channel_txpower: update channel tx power
863 * update channel tx power based on EEPROM enhanced tx power info.
864 */
865static s8 iwl_update_channel_txpower(struct iwl_priv *priv,
866 struct iwl_eeprom_enhanced_txpwr *enhanced_txpower,
ae16fc3c 867 int section, int element, s8 *max_txpower_in_half_dbm)
ab9fd1bf
WYG		 868{
869 struct iwl_channel_info *ch_info;
870 int ch;
871 u8 channel;
872 s8 max_txpower_avg; /* (dBm) */
873
874 channel = enhinfo[section].iwl_eeprom_section_channel[element];
875 max_txpower_avg =
ae16fc3c
WYG		 876 iwl_get_max_txpower_avg(priv, enhanced_txpower,
877 element, max_txpower_in_half_dbm);
ab9fd1bf
WYG		 878
879 ch_info = priv->channel_info;
880 for (ch = 0; ch < priv->channel_count; ch++) {
881 /* find matching channel and update tx power if needed */
882 if (ch_info->channel == channel) {
883 if ((ch_info->max_power_avg < max_txpower_avg) &&
884 (!enhinfo[section].is_ht40)) {
885 /* Update regulatory-based run-time data */
886 ch_info->max_power_avg = max_txpower_avg;
887 ch_info->curr_txpow = max_txpower_avg;
888 ch_info->scan_power = max_txpower_avg;
889 }
890 if ((enhinfo[section].is_ht40) &&
ab9fd1bf
WYG		 891 (ch_info->ht40_max_power_avg < max_txpower_avg)) {
892 /* Update regulatory-based run-time data */
893 ch_info->ht40_max_power_avg = max_txpower_avg;
ab9fd1bf
WYG		 894 }
895 break;
896 }
897 ch_info++;
898 }
899 return max_txpower_avg;
900}
901
902/**
903 * iwlcore_eeprom_enhanced_txpower: process enhanced tx power info
904 */
905void iwlcore_eeprom_enhanced_txpower(struct iwl_priv *priv)
906{
907 int eeprom_section_count = 0;
908 int section, element;
909 struct iwl_eeprom_enhanced_txpwr *enhanced_txpower;
910 u32 offset;
911 s8 max_txpower_avg; /* (dBm) */
ae16fc3c 912 s8 max_txpower_in_half_dbm; /* (half-dBm) */
ab9fd1bf
WYG		 913
914 /* Loop through all the sections
915 * adjust bands and channel's max tx power
916 * Set the tx_power_user_lmt to the highest power
917 * supported by any channels and chains
918 */
919 for (section = 0; section < ARRAY_SIZE(enhinfo); section++) {
920 eeprom_section_count = enhinfo[section].count;
921 offset = enhinfo[section].offset;
922 enhanced_txpower = (struct iwl_eeprom_enhanced_txpwr *)
923 iwl_eeprom_query_addr(priv, offset);
924
85f0d9e8
WYG		 925 /*
926 * check for valid entry -
927 * different version of EEPROM might contain different set
928 * of enhanced tx power table
929 * always check for valid entry before process
930 * the information
931 */
932 if (!enhanced_txpower->common || enhanced_txpower->reserved)
933 continue;
934
ab9fd1bf
WYG		 935 for (element = 0; element < eeprom_section_count; element++) {
936 if (enhinfo[section].is_common)
937 max_txpower_avg =
938 iwl_update_common_txpower(priv,
ae16fc3c
WYG		 939 enhanced_txpower, section,
940 element,
941 &max_txpower_in_half_dbm);
ab9fd1bf
WYG		 942 else
943 max_txpower_avg =
944 iwl_update_channel_txpower(priv,
ae16fc3c
WYG		 945 enhanced_txpower, section,
946 element,
947 &max_txpower_in_half_dbm);
ab9fd1bf
WYG		 948
949 /* Update the tx_power_user_lmt to the highest power
950 * supported by any channel */
951 if (max_txpower_avg > priv->tx_power_user_lmt)
952 priv->tx_power_user_lmt = max_txpower_avg;
ae16fc3c
WYG		 953
954 /*
955 * Update the tx_power_lmt_in_half_dbm to
956 * the highest power supported by any channel
957 */
958 if (max_txpower_in_half_dbm >
959 priv->tx_power_lmt_in_half_dbm)
960 priv->tx_power_lmt_in_half_dbm =
961 max_txpower_in_half_dbm;
ab9fd1bf
WYG		 962 }
963 }
964}
965EXPORT_SYMBOL(iwlcore_eeprom_enhanced_txpower);
966
bf85ea4f
AK		 967#define CHECK_AND_PRINT_I(x) ((eeprom_ch_info[ch].flags & EEPROM_CHANNEL_##x) \
968 ? # x " " : "")
969
970/**
971 * iwl_init_channel_map - Set up driver's info for all possible channels
972 */
973int iwl_init_channel_map(struct iwl_priv *priv)
974{
975 int eeprom_ch_count = 0;
976 const u8 *eeprom_ch_index = NULL;
073d3f5f 977 const struct iwl_eeprom_channel *eeprom_ch_info = NULL;
bf85ea4f
AK		 978 int band, ch;
979 struct iwl_channel_info *ch_info;
980
981 if (priv->channel_count) {
e1623446 982 IWL_DEBUG_INFO(priv, "Channel map already initialized.\n");
bf85ea4f
AK		 983 return 0;
984 }
985
e1623446 986 IWL_DEBUG_INFO(priv, "Initializing regulatory info from EEPROM\n");
bf85ea4f
AK		 987
988 priv->channel_count =
989 ARRAY_SIZE(iwl_eeprom_band_1) +
990 ARRAY_SIZE(iwl_eeprom_band_2) +
991 ARRAY_SIZE(iwl_eeprom_band_3) +
992 ARRAY_SIZE(iwl_eeprom_band_4) +
993 ARRAY_SIZE(iwl_eeprom_band_5);
994
e1623446 995 IWL_DEBUG_INFO(priv, "Parsing data for %d channels.\n", priv->channel_count);
bf85ea4f
AK		 996
997 priv->channel_info = kzalloc(sizeof(struct iwl_channel_info) *
998 priv->channel_count, GFP_KERNEL);
999 if (!priv->channel_info) {
15b1687c 1000 IWL_ERR(priv, "Could not allocate channel_info\n");
bf85ea4f
AK		 1001 priv->channel_count = 0;
1002 return -ENOMEM;
1003 }
1004
1005 ch_info = priv->channel_info;
1006
1007 /* Loop through the 5 EEPROM bands adding them in order to the
1008 * channel map we maintain (that contains additional information than
1009 * what just in the EEPROM) */
1010 for (band = 1; band <= 5; band++) {
1011
1012 iwl_init_band_reference(priv, band, &eeprom_ch_count,
1013 &eeprom_ch_info, &eeprom_ch_index);
1014
1015 /* Loop through each band adding each of the channels */
1016 for (ch = 0; ch < eeprom_ch_count; ch++) {
1017 ch_info->channel = eeprom_ch_index[ch];
1018 ch_info->band = (band == 1) ? IEEE80211_BAND_2GHZ :
1019 IEEE80211_BAND_5GHZ;
1020
1021 /* permanently store EEPROM's channel regulatory flags
1022 * and max power in channel info database. */
1023 ch_info->eeprom = eeprom_ch_info[ch];
1024
1025 /* Copy the run-time flags so they are there even on
1026 * invalid channels */
1027 ch_info->flags = eeprom_ch_info[ch].flags;
7aafef1c 1028 /* First write that ht40 is not enabled, and then enable
963f5517 1029 * one by one */
7aafef1c 1030 ch_info->ht40_extension_channel =
3b24716f 1031 IEEE80211_CHAN_NO_HT40;
bf85ea4f
AK		 1032
1033 if (!(is_channel_valid(ch_info))) {
e1623446 1034 IWL_DEBUG_INFO(priv, "Ch. %d Flags %x [%sGHz] - "
bf85ea4f
AK		 1035 "No traffic\n",
1036 ch_info->channel,
1037 ch_info->flags,
1038 is_channel_a_band(ch_info) ?
1039 "5.2" : "2.4");
1040 ch_info++;
1041 continue;
1042 }
1043
1044 /* Initialize regulatory-based run-time data */
1045 ch_info->max_power_avg = ch_info->curr_txpow =
1046 eeprom_ch_info[ch].max_power_avg;
1047 ch_info->scan_power = eeprom_ch_info[ch].max_power_avg;
1048 ch_info->min_power = 0;
1049
e1623446 1050 IWL_DEBUG_INFO(priv, "Ch. %d [%sGHz] %s%s%s%s%s%s(0x%02x %ddBm):"
630fe9b6 1051 " Ad-Hoc %ssupported\n",
bf85ea4f
AK		 1052 ch_info->channel,
1053 is_channel_a_band(ch_info) ?
1054 "5.2" : "2.4",
1055 CHECK_AND_PRINT_I(VALID),
1056 CHECK_AND_PRINT_I(IBSS),
1057 CHECK_AND_PRINT_I(ACTIVE),
1058 CHECK_AND_PRINT_I(RADAR),
1059 CHECK_AND_PRINT_I(WIDE),
bf85ea4f
AK		 1060 CHECK_AND_PRINT_I(DFS),
1061 eeprom_ch_info[ch].flags,
1062 eeprom_ch_info[ch].max_power_avg,
1063 ((eeprom_ch_info[ch].
1064 flags & EEPROM_CHANNEL_IBSS)
1065 && !(eeprom_ch_info[ch].
1066 flags & EEPROM_CHANNEL_RADAR))
1067 ? "" : "not ");
1068
62ea9c5b 1069 /* Set the tx_power_user_lmt to the highest power
bf85ea4f
AK		 1070 * supported by any channel */
1071 if (eeprom_ch_info[ch].max_power_avg >
630fe9b6
TW		 1072 priv->tx_power_user_lmt)
1073 priv->tx_power_user_lmt =
bf85ea4f
AK		 1074 eeprom_ch_info[ch].max_power_avg;
1075
1076 ch_info++;
1077 }
1078 }
1079
7aafef1c 1080 /* Check if we do have HT40 channels */
a89d03c4 1081 if (priv->cfg->ops->lib->eeprom_ops.regulatory_bands[5] ==
7aafef1c 1082 EEPROM_REGULATORY_BAND_NO_HT40 &&
a89d03c4 1083 priv->cfg->ops->lib->eeprom_ops.regulatory_bands[6] ==
7aafef1c 1084 EEPROM_REGULATORY_BAND_NO_HT40)
e6148917
SO		 1085 return 0;
1086
7aafef1c 1087 /* Two additional EEPROM bands for 2.4 and 5 GHz HT40 channels */
bf85ea4f
AK		 1088 for (band = 6; band <= 7; band++) {
1089 enum ieee80211_band ieeeband;
bf85ea4f
AK		 1090
1091 iwl_init_band_reference(priv, band, &eeprom_ch_count,
1092 &eeprom_ch_info, &eeprom_ch_index);
1093
1094 /* EEPROM band 6 is 2.4, band 7 is 5 GHz */
1095 ieeeband =
1096 (band == 6) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ;
1097
1098 /* Loop through each band adding each of the channels */
1099 for (ch = 0; ch < eeprom_ch_count; ch++) {
bf85ea4f 1100 /* Set up driver's info for lower half */
3b24716f 1101 iwl_mod_ht40_chan_info(priv, ieeeband,
da6833cb 1102 eeprom_ch_index[ch],
3b24716f
ZY		 1103 &eeprom_ch_info[ch],
1104 IEEE80211_CHAN_NO_HT40PLUS);
bf85ea4f
AK		 1105
1106 /* Set up driver's info for upper half */
3b24716f
ZY		 1107 iwl_mod_ht40_chan_info(priv, ieeeband,
1108 eeprom_ch_index[ch] + 4,
1109 &eeprom_ch_info[ch],
1110 IEEE80211_CHAN_NO_HT40MINUS);
bf85ea4f
AK		 1111 }
1112 }
1113
ab9fd1bf
WYG		 1114 /* for newer device (6000 series and up)
1115 * EEPROM contain enhanced tx power information
1116 * driver need to process addition information
1117 * to determine the max channel tx power limits
1118 */
1119 if (priv->cfg->ops->lib->eeprom_ops.update_enhanced_txpower)
1120 priv->cfg->ops->lib->eeprom_ops.update_enhanced_txpower(priv);
1121
bf85ea4f
AK		 1122 return 0;
1123}
1124EXPORT_SYMBOL(iwl_init_channel_map);
1125
1126/*
da6833cb 1127 * iwl_free_channel_map - undo allocations in iwl_init_channel_map
bf85ea4f
AK		 1128 */
1129void iwl_free_channel_map(struct iwl_priv *priv)
1130{
1131 kfree(priv->channel_info);
1132 priv->channel_count = 0;
1133}
e6148917 1134EXPORT_SYMBOL(iwl_free_channel_map);
bf85ea4f
AK		 1135
1136/**
1137 * iwl_get_channel_info - Find driver's private channel info
1138 *
1139 * Based on band and channel number.
1140 */
82a66bbb
TW		 1141const struct iwl_channel_info *iwl_get_channel_info(const struct iwl_priv *priv,
1142 enum ieee80211_band band, u16 channel)
bf85ea4f
AK		 1143{
1144 int i;
1145
1146 switch (band) {
1147 case IEEE80211_BAND_5GHZ:
1148 for (i = 14; i < priv->channel_count; i++) {
1149 if (priv->channel_info[i].channel == channel)
1150 return &priv->channel_info[i];
1151 }
1152 break;
1153 case IEEE80211_BAND_2GHZ:
1154 if (channel >= 1 && channel <= 14)
1155 return &priv->channel_info[channel - 1];
1156 break;
1157 default:
1158 BUG();
1159 }
1160
1161 return NULL;
1162}
8622e705 1163EXPORT_SYMBOL(iwl_get_channel_info);
bf85ea4f 1164
Clone of davem's net-next-2.6 tree