aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/wireless/iwlwifi/iwl-eeprom.h
blob: 8a583947b2c7c312cddce300ae209d5339842d19 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
 * Copyright(c) 2008 Intel Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
 * in the file called LICENSE.GPL.
 *
 * Contact Information:
 * Tomas Winkler <tomas.winkler@intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
 * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

#ifndef __iwl_eeprom_h__
#define __iwl_eeprom_h__

struct iwl_priv;

/*
 * EEPROM access time values:
 *
 * Driver initiates EEPROM read by writing byte address << 1 to CSR_EEPROM_REG,
 *   then clearing (with subsequent read/modify/write) CSR_EEPROM_REG bit
 *   CSR_EEPROM_REG_BIT_CMD (0x2).
 * Driver then polls CSR_EEPROM_REG for CSR_EEPROM_REG_READ_VALID_MSK (0x1).
 * When polling, wait 10 uSec between polling loops, up to a maximum 5000 uSec.
 * Driver reads 16-bit value from bits 31-16 of CSR_EEPROM_REG.
 */
#define IWL_EEPROM_ACCESS_TIMEOUT	5000 /* uSec */
#define IWL_EEPROM_ACCESS_DELAY		10   /* uSec */

#define IWL_EEPROM_SEM_TIMEOUT 		10   /* milliseconds */
#define IWL_EEPROM_SEM_RETRY_LIMIT	1000 /* number of attempts (not time) */


/*
 * Regulatory channel usage flags in EEPROM struct iwl4965_eeprom_channel.flags.
 *
 * IBSS and/or AP operation is allowed *only* on those channels with
 * (VALID && IBSS && ACTIVE && !RADAR).  This restriction is in place because
 * RADAR detection is not supported by the 4965 driver, but is a
 * requirement for establishing a new network for legal operation on channels
 * requiring RADAR detection or restricting ACTIVE scanning.
 *
 * NOTE:  "WIDE" flag does not indicate anything about "FAT" 40 MHz channels.
 *        It only indicates that 20 MHz channel use is supported; FAT channel
 *        usage is indicated by a separate set of regulatory flags for each
 *        FAT channel pair.
 *
 * NOTE:  Using a channel inappropriately will result in a uCode error!
 */
#define IWL_NUM_TX_CALIB_GROUPS 5
enum {
	EEPROM_CHANNEL_VALID = (1 << 0),	/* usable for this SKU/geo */
	EEPROM_CHANNEL_IBSS = (1 << 1),		/* usable as an IBSS channel */
	/* Bit 2 Reserved */
	EEPROM_CHANNEL_ACTIVE = (1 << 3),	/* active scanning allowed */
	EEPROM_CHANNEL_RADAR = (1 << 4),	/* radar detection required */
	EEPROM_CHANNEL_WIDE = (1 << 5),		/* 20 MHz channel okay */
	EEPROM_CHANNEL_NARROW = (1 << 6),	/* 10 MHz channel (not used) */
	EEPROM_CHANNEL_DFS = (1 << 7),	/* dynamic freq selection candidate */
};

/* SKU Capabilities */
#define EEPROM_SKU_CAP_SW_RF_KILL_ENABLE                (1 << 0)
#define EEPROM_SKU_CAP_HW_RF_KILL_ENABLE                (1 << 1)

/* *regulatory* channel data format in eeprom, one for each channel.
 * There are separate entries for FAT (40 MHz) vs. normal (20 MHz) channels. */
struct iwl4965_eeprom_channel {
	u8 flags;		/* EEPROM_CHANNEL_* flags copied from EEPROM */
	s8 max_power_avg;	/* max power (dBm) on this chnl, limit 31 */
} __attribute__ ((packed));

/* 4965 has two radio transmitters (and 3 radio receivers) */
#define EEPROM_TX_POWER_TX_CHAINS      (2)

/* 4965 has room for up to 8 sets of txpower calibration data */
#define EEPROM_TX_POWER_BANDS          (8)

/* 4965 factory calibration measures txpower gain settings for
 * each of 3 target output levels */
#define EEPROM_TX_POWER_MEASUREMENTS   (3)

#define EEPROM_4965_TX_POWER_VERSION        (2)

/* 4965 driver does not work with txpower calibration version < 5.
 * Look for this in calib_version member of struct iwl4965_eeprom. */
#define EEPROM_TX_POWER_VERSION_NEW    (5)

/* 2.4 GHz */
extern const u8 iwl_eeprom_band_1[14];

/*
 * 4965 factory calibration data for one txpower level, on one channel,
 * measured on one of the 2 tx chains (radio transmitter and associated
 * antenna).  EEPROM contains:
 *
 * 1)  Temperature (degrees Celsius) of device when measurement was made.
 *
 * 2)  Gain table index used to achieve the target measurement power.
 *     This refers to the "well-known" gain tables (see iwl-4965-hw.h).
 *
 * 3)  Actual measured output power, in half-dBm ("34" = 17 dBm).
 *
 * 4)  RF power amplifier detector level measurement (not used).
 */
struct iwl4965_eeprom_calib_measure {
	u8 temperature;		/* Device temperature (Celsius) */
	u8 gain_idx;		/* Index into gain table */
	u8 actual_pow;		/* Measured RF output power, half-dBm */
	s8 pa_det;		/* Power amp detector level (not used) */
} __attribute__ ((packed));


/*
 * 4965 measurement set for one channel.  EEPROM contains:
 *
 * 1)  Channel number measured
 *
 * 2)  Measurements for each of 3 power levels for each of 2 radio transmitters
 *     (a.k.a. "tx chains") (6 measurements altogether)
 */
struct iwl4965_eeprom_calib_ch_info {
	u8 ch_num;
	struct iwl4965_eeprom_calib_measure
		measurements[EEPROM_TX_POWER_TX_CHAINS]
			[EEPROM_TX_POWER_MEASUREMENTS];
} __attribute__ ((packed));

/*
 * 4965 txpower subband info.
 *
 * For each frequency subband, EEPROM contains the following:
 *
 * 1)  First and last channels within range of the subband.  "0" values
 *     indicate that this sample set is not being used.
 *
 * 2)  Sample measurement sets for 2 channels close to the range endpoints.
 */
struct iwl4965_eeprom_calib_subband_info {
	u8 ch_from;	/* channel number of lowest channel in subband */
	u8 ch_to;	/* channel number of highest channel in subband */
	struct iwl4965_eeprom_calib_ch_info ch1;
	struct iwl4965_eeprom_calib_ch_info ch2;
} __attribute__ ((packed));


/*
 * 4965 txpower calibration info.  EEPROM contains:
 *
 * 1)  Factory-measured saturation power levels (maximum levels at which
 *     tx power amplifier can output a signal without too much distortion).
 *     There is one level for 2.4 GHz band and one for 5 GHz band.  These
 *     values apply to all channels within each of the bands.
 *
 * 2)  Factory-measured power supply voltage level.  This is assumed to be
 *     constant (i.e. same value applies to all channels/bands) while the
 *     factory measurements are being made.
 *
 * 3)  Up to 8 sets of factory-measured txpower calibration values.
 *     These are for different frequency ranges, since txpower gain
 *     characteristics of the analog radio circuitry vary with frequency.
 *
 *     Not all sets need to be filled with data;
 *     struct iwl4965_eeprom_calib_subband_info contains range of channels
 *     (0 if unused) for each set of data.
 */
struct iwl4965_eeprom_calib_info {
	u8 saturation_power24;	/* half-dBm (e.g. "34" = 17 dBm) */
	u8 saturation_power52;	/* half-dBm */
	s16 voltage;		/* signed */
	struct iwl4965_eeprom_calib_subband_info
		band_info[EEPROM_TX_POWER_BANDS];
} __attribute__ ((packed));



/*
 * 4965 EEPROM map
 */
struct iwl4965_eeprom {
	u8 reserved0[16];
	u16 device_id;		/* abs.ofs: 16 */
	u8 reserved1[2];
	u16 pmc;		/* abs.ofs: 20 */
	u8 reserved2[20];
	u8 mac_address[6];	/* abs.ofs: 42 */
	u8 reserved3[58];
	u16 board_revision;	/* abs.ofs: 106 */
	u8 reserved4[11];
	u8 board_pba_number[9];	/* abs.ofs: 119 */
	u8 reserved5[8];
	u16 version;		/* abs.ofs: 136 */
	u8 sku_cap;		/* abs.ofs: 138 */
	u8 leds_mode;		/* abs.ofs: 139 */
	u16 oem_mode;
	u16 wowlan_mode;	/* abs.ofs: 142 */
	u16 leds_time_interval;	/* abs.ofs: 144 */
	u8 leds_off_time;	/* abs.ofs: 146 */
	u8 leds_on_time;	/* abs.ofs: 147 */
	u8 almgor_m_version;	/* abs.ofs: 148 */
	u8 antenna_switch_type;	/* abs.ofs: 149 */
	u8 reserved6[8];
	u16 board_revision_4965;	/* abs.ofs: 158 */
	u8 reserved7[13];
	u8 board_pba_number_4965[9];	/* abs.ofs: 173 */
	u8 reserved8[10];
	u8 sku_id[4];		/* abs.ofs: 192 */

/*
 * Per-channel regulatory data.
 *
 * Each channel that *might* be supported by 3945 or 4965 has a fixed location
 * in EEPROM containing EEPROM_CHANNEL_* usage flags (LSB) and max regulatory
 * txpower (MSB).
 *
 * Entries immediately below are for 20 MHz channel width.  FAT (40 MHz)
 * channels (only for 4965, not supported by 3945) appear later in the EEPROM.
 *
 * 2.4 GHz channels 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
 */
	u16 band_1_count;	/* abs.ofs: 196 */
	struct iwl4965_eeprom_channel band_1_channels[14]; /* abs.ofs: 196 */

/*
 * 4.9 GHz channels 183, 184, 185, 187, 188, 189, 192, 196,
 * 5.0 GHz channels 7, 8, 11, 12, 16
 * (4915-5080MHz) (none of these is ever supported)
 */
	u16 band_2_count;	/* abs.ofs: 226 */
	struct iwl4965_eeprom_channel band_2_channels[13]; /* abs.ofs: 228 */

/*
 * 5.2 GHz channels 34, 36, 38, 40, 42, 44, 46, 48, 52, 56, 60, 64
 * (5170-5320MHz)
 */
	u16 band_3_count;	/* abs.ofs: 254 */
	struct iwl4965_eeprom_channel band_3_channels[12]; /* abs.ofs: 256 */

/*
 * 5.5 GHz channels 100, 104, 108, 112, 116, 120, 124, 128, 132, 136, 140
 * (5500-5700MHz)
 */
	u16 band_4_count;	/* abs.ofs: 280 */
	struct iwl4965_eeprom_channel band_4_channels[11]; /* abs.ofs: 282 */

/*
 * 5.7 GHz channels 145, 149, 153, 157, 161, 165
 * (5725-5825MHz)
 */
	u16 band_5_count;	/* abs.ofs: 304 */
	struct iwl4965_eeprom_channel band_5_channels[6]; /* abs.ofs: 306 */

	u8 reserved10[2];


/*
 * 2.4 GHz FAT channels 1 (5), 2 (6), 3 (7), 4 (8), 5 (9), 6 (10), 7 (11)
 *
 * The channel listed is the center of the lower 20 MHz half of the channel.
 * The overall center frequency is actually 2 channels (10 MHz) above that,
 * and the upper half of each FAT channel is centered 4 channels (20 MHz) away
 * from the lower half; e.g. the upper half of FAT channel 1 is channel 5,
 * and the overall FAT channel width centers on channel 3.
 *
 * NOTE:  The RXON command uses 20 MHz channel numbers to specify the
 *        control channel to which to tune.  RXON also specifies whether the
 *        control channel is the upper or lower half of a FAT channel.
 *
 * NOTE:  4965 does not support FAT channels on 2.4 GHz.
 */
	struct iwl4965_eeprom_channel band_24_channels[7]; /* abs.ofs: 320 */
	u8 reserved11[2];

/*
 * 5.2 GHz FAT channels 36 (40), 44 (48), 52 (56), 60 (64),
 * 100 (104), 108 (112), 116 (120), 124 (128), 132 (136), 149 (153), 157 (161)
 */
	struct iwl4965_eeprom_channel band_52_channels[11]; /* abs.ofs: 336 */
	u8 reserved12[6];

/*
 * 4965 driver requires txpower calibration format version 5 or greater.
 * Driver does not work with txpower calibration version < 5.
 * This value is simply a 16-bit number, no major/minor versions here.
 */
	u16 calib_version;	/* abs.ofs: 364 */
	u8 reserved13[2];
	u8 reserved14[96];	/* abs.ofs: 368 */

/*
 * 4965 Txpower calibration data.
 */
	struct iwl4965_eeprom_calib_info calib_info;	/* abs.ofs: 464 */

	u8 reserved16[140];	/* fill out to full 1024 byte block */


} __attribute__ ((packed));

#define IWL_EEPROM_IMAGE_SIZE 1024

/* End of EEPROM */

struct iwl_eeprom_ops {
	int (*verify_signature) (struct iwl_priv *priv);
	int (*acquire_semaphore) (struct iwl_priv *priv);
	void (*release_semaphore) (struct iwl_priv *priv);
};


void iwl_eeprom_get_mac(const struct iwl_priv *priv, u8 *mac);
int iwl_eeprom_init(struct iwl_priv *priv);

int iwlcore_eeprom_verify_signature(struct iwl_priv *priv);
int iwlcore_eeprom_acquire_semaphore(struct iwl_priv *priv);
void iwlcore_eeprom_release_semaphore(struct iwl_priv *priv);

int iwl_init_channel_map(struct iwl_priv *priv);
void iwl_free_channel_map(struct iwl_priv *priv);
const struct iwl_channel_info *iwl4965_get_channel_info(
		const struct iwl_priv *priv,
		enum ieee80211_band band, u16 channel);

#endif  /* __iwl_eeprom_h__ */