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) 2005 - 2010 Intel Corporation. All rights reserved. 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of version 2 of the GNU General Public License as 12 * published by the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 22 * USA 23 * 24 * The full GNU General Public License is included in this distribution 25 * in the file called LICENSE.GPL. 26 * 27 * Contact Information: 28 * Intel Linux Wireless <ilw@linux.intel.com> 29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 30 * 31 * BSD LICENSE 32 * 33 * Copyright(c) 2005 - 2010 Intel Corporation. All rights reserved. 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 * Please use this file (iwl-4965-hw.h) only for hardware-related definitions. 65 * Use iwl-commands.h for uCode API definitions. 66 * Use iwl-dev.h for driver implementation definitions. 67 */ 68 69#ifndef __iwl_4965_hw_h__ 70#define __iwl_4965_hw_h__ 71 72#include "iwl-fh.h" 73 74/* EEPROM */ 75#define IWL4965_EEPROM_IMG_SIZE 1024 76 77/* 78 * uCode queue management definitions ... 79 * The first queue used for block-ack aggregation is #7 (4965 only). 80 * All block-ack aggregation queues should map to Tx DMA/FIFO channel 7. 81 */ 82#define IWL49_FIRST_AMPDU_QUEUE 7 83 84/* Sizes and addresses for instruction and data memory (SRAM) in 85 * 4965's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */ 86#define IWL49_RTC_INST_LOWER_BOUND (0x000000) 87#define IWL49_RTC_INST_UPPER_BOUND (0x018000) 88 89#define IWL49_RTC_DATA_LOWER_BOUND (0x800000) 90#define IWL49_RTC_DATA_UPPER_BOUND (0x80A000) 91 92#define IWL49_RTC_INST_SIZE (IWL49_RTC_INST_UPPER_BOUND - \ 93 IWL49_RTC_INST_LOWER_BOUND) 94#define IWL49_RTC_DATA_SIZE (IWL49_RTC_DATA_UPPER_BOUND - \ 95 IWL49_RTC_DATA_LOWER_BOUND) 96 97#define IWL49_MAX_INST_SIZE IWL49_RTC_INST_SIZE 98#define IWL49_MAX_DATA_SIZE IWL49_RTC_DATA_SIZE 99 100/* Size of uCode instruction memory in bootstrap state machine */ 101#define IWL49_MAX_BSM_SIZE BSM_SRAM_SIZE 102 103static inline int iwl4965_hw_valid_rtc_data_addr(u32 addr) 104{ 105 return (addr >= IWL49_RTC_DATA_LOWER_BOUND) && 106 (addr < IWL49_RTC_DATA_UPPER_BOUND); 107} 108 109/********************* START TEMPERATURE *************************************/ 110 111/** 112 * 4965 temperature calculation. 113 * 114 * The driver must calculate the device temperature before calculating 115 * a txpower setting (amplifier gain is temperature dependent). The 116 * calculation uses 4 measurements, 3 of which (R1, R2, R3) are calibration 117 * values used for the life of the driver, and one of which (R4) is the 118 * real-time temperature indicator. 119 * 120 * uCode provides all 4 values to the driver via the "initialize alive" 121 * notification (see struct iwl4965_init_alive_resp). After the runtime uCode 122 * image loads, uCode updates the R4 value via statistics notifications 123 * (see STATISTICS_NOTIFICATION), which occur after each received beacon 124 * when associated, or can be requested via REPLY_STATISTICS_CMD. 125 * 126 * NOTE: uCode provides the R4 value as a 23-bit signed value. Driver 127 * must sign-extend to 32 bits before applying formula below. 128 * 129 * Formula: 130 * 131 * degrees Kelvin = ((97 * 259 * (R4 - R2) / (R3 - R1)) / 100) + 8 132 * 133 * NOTE: The basic formula is 259 * (R4-R2) / (R3-R1). The 97/100 is 134 * an additional correction, which should be centered around 0 degrees 135 * Celsius (273 degrees Kelvin). The 8 (3 percent of 273) compensates for 136 * centering the 97/100 correction around 0 degrees K. 137 * 138 * Add 273 to Kelvin value to find degrees Celsius, for comparing current 139 * temperature with factory-measured temperatures when calculating txpower 140 * settings. 141 */ 142#define TEMPERATURE_CALIB_KELVIN_OFFSET 8 143#define TEMPERATURE_CALIB_A_VAL 259 144 145/* Limit range of calculated temperature to be between these Kelvin values */ 146#define IWL_TX_POWER_TEMPERATURE_MIN (263) 147#define IWL_TX_POWER_TEMPERATURE_MAX (410) 148 149#define IWL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(t) \ 150 (((t) < IWL_TX_POWER_TEMPERATURE_MIN) || \ 151 ((t) > IWL_TX_POWER_TEMPERATURE_MAX)) 152 153/********************* END TEMPERATURE ***************************************/ 154 155/********************* START TXPOWER *****************************************/ 156 157/** 158 * 4965 txpower calculations rely on information from three sources: 159 * 160 * 1) EEPROM 161 * 2) "initialize" alive notification 162 * 3) statistics notifications 163 * 164 * EEPROM data consists of: 165 * 166 * 1) Regulatory information (max txpower and channel usage flags) is provided 167 * separately for each channel that can possibly supported by 4965. 168 * 40 MHz wide (.11n HT40) channels are listed separately from 20 MHz 169 * (legacy) channels. 170 * 171 * See struct iwl4965_eeprom_channel for format, and struct iwl4965_eeprom 172 * for locations in EEPROM. 173 * 174 * 2) Factory txpower calibration information is provided separately for 175 * sub-bands of contiguous channels. 2.4GHz has just one sub-band, 176 * but 5 GHz has several sub-bands. 177 * 178 * In addition, per-band (2.4 and 5 Ghz) saturation txpowers are provided. 179 * 180 * See struct iwl4965_eeprom_calib_info (and the tree of structures 181 * contained within it) for format, and struct iwl4965_eeprom for 182 * locations in EEPROM. 183 * 184 * "Initialization alive" notification (see struct iwl4965_init_alive_resp) 185 * consists of: 186 * 187 * 1) Temperature calculation parameters. 188 * 189 * 2) Power supply voltage measurement. 190 * 191 * 3) Tx gain compensation to balance 2 transmitters for MIMO use. 192 * 193 * Statistics notifications deliver: 194 * 195 * 1) Current values for temperature param R4. 196 */ 197 198/** 199 * To calculate a txpower setting for a given desired target txpower, channel, 200 * modulation bit rate, and transmitter chain (4965 has 2 transmitters to 201 * support MIMO and transmit diversity), driver must do the following: 202 * 203 * 1) Compare desired txpower vs. (EEPROM) regulatory limit for this channel. 204 * Do not exceed regulatory limit; reduce target txpower if necessary. 205 * 206 * If setting up txpowers for MIMO rates (rate indexes 8-15, 24-31), 207 * 2 transmitters will be used simultaneously; driver must reduce the 208 * regulatory limit by 3 dB (half-power) for each transmitter, so the 209 * combined total output of the 2 transmitters is within regulatory limits. 210 * 211 * 212 * 2) Compare target txpower vs. (EEPROM) saturation txpower *reduced by 213 * backoff for this bit rate*. Do not exceed (saturation - backoff[rate]); 214 * reduce target txpower if necessary. 215 * 216 * Backoff values below are in 1/2 dB units (equivalent to steps in 217 * txpower gain tables): 218 * 219 * OFDM 6 - 36 MBit: 10 steps (5 dB) 220 * OFDM 48 MBit: 15 steps (7.5 dB) 221 * OFDM 54 MBit: 17 steps (8.5 dB) 222 * OFDM 60 MBit: 20 steps (10 dB) 223 * CCK all rates: 10 steps (5 dB) 224 * 225 * Backoff values apply to saturation txpower on a per-transmitter basis; 226 * when using MIMO (2 transmitters), each transmitter uses the same 227 * saturation level provided in EEPROM, and the same backoff values; 228 * no reduction (such as with regulatory txpower limits) is required. 229 * 230 * Saturation and Backoff values apply equally to 20 Mhz (legacy) channel 231 * widths and 40 Mhz (.11n HT40) channel widths; there is no separate 232 * factory measurement for ht40 channels. 233 * 234 * The result of this step is the final target txpower. The rest of 235 * the steps figure out the proper settings for the device to achieve 236 * that target txpower. 237 * 238 * 239 * 3) Determine (EEPROM) calibration sub band for the target channel, by 240 * comparing against first and last channels in each sub band 241 * (see struct iwl4965_eeprom_calib_subband_info). 242 * 243 * 244 * 4) Linearly interpolate (EEPROM) factory calibration measurement sets, 245 * referencing the 2 factory-measured (sample) channels within the sub band. 246 * 247 * Interpolation is based on difference between target channel's frequency 248 * and the sample channels' frequencies. Since channel numbers are based 249 * on frequency (5 MHz between each channel number), this is equivalent 250 * to interpolating based on channel number differences. 251 * 252 * Note that the sample channels may or may not be the channels at the 253 * edges of the sub band. The target channel may be "outside" of the 254 * span of the sampled channels. 255 * 256 * Driver may choose the pair (for 2 Tx chains) of measurements (see 257 * struct iwl4965_eeprom_calib_ch_info) for which the actual measured 258 * txpower comes closest to the desired txpower. Usually, though, 259 * the middle set of measurements is closest to the regulatory limits, 260 * and is therefore a good choice for all txpower calculations (this 261 * assumes that high accuracy is needed for maximizing legal txpower, 262 * while lower txpower configurations do not need as much accuracy). 263 * 264 * Driver should interpolate both members of the chosen measurement pair, 265 * i.e. for both Tx chains (radio transmitters), unless the driver knows 266 * that only one of the chains will be used (e.g. only one tx antenna 267 * connected, but this should be unusual). The rate scaling algorithm 268 * switches antennas to find best performance, so both Tx chains will 269 * be used (although only one at a time) even for non-MIMO transmissions. 270 * 271 * Driver should interpolate factory values for temperature, gain table 272 * index, and actual power. The power amplifier detector values are 273 * not used by the driver. 274 * 275 * Sanity check: If the target channel happens to be one of the sample 276 * channels, the results should agree with the sample channel's 277 * measurements! 278 * 279 * 280 * 5) Find difference between desired txpower and (interpolated) 281 * factory-measured txpower. Using (interpolated) factory gain table index 282 * (shown elsewhere) as a starting point, adjust this index lower to 283 * increase txpower, or higher to decrease txpower, until the target 284 * txpower is reached. Each step in the gain table is 1/2 dB. 285 * 286 * For example, if factory measured txpower is 16 dBm, and target txpower 287 * is 13 dBm, add 6 steps to the factory gain index to reduce txpower 288 * by 3 dB. 289 * 290 * 291 * 6) Find difference between current device temperature and (interpolated) 292 * factory-measured temperature for sub-band. Factory values are in 293 * degrees Celsius. To calculate current temperature, see comments for 294 * "4965 temperature calculation". 295 * 296 * If current temperature is higher than factory temperature, driver must 297 * increase gain (lower gain table index), and vice verse. 298 * 299 * Temperature affects gain differently for different channels: 300 * 301 * 2.4 GHz all channels: 3.5 degrees per half-dB step 302 * 5 GHz channels 34-43: 4.5 degrees per half-dB step 303 * 5 GHz channels >= 44: 4.0 degrees per half-dB step 304 * 305 * NOTE: Temperature can increase rapidly when transmitting, especially 306 * with heavy traffic at high txpowers. Driver should update 307 * temperature calculations often under these conditions to 308 * maintain strong txpower in the face of rising temperature. 309 * 310 * 311 * 7) Find difference between current power supply voltage indicator 312 * (from "initialize alive") and factory-measured power supply voltage 313 * indicator (EEPROM). 314 * 315 * If the current voltage is higher (indicator is lower) than factory 316 * voltage, gain should be reduced (gain table index increased) by: 317 * 318 * (eeprom - current) / 7 319 * 320 * If the current voltage is lower (indicator is higher) than factory 321 * voltage, gain should be increased (gain table index decreased) by: 322 * 323 * 2 * (current - eeprom) / 7 324 * 325 * If number of index steps in either direction turns out to be > 2, 326 * something is wrong ... just use 0. 327 * 328 * NOTE: Voltage compensation is independent of band/channel. 329 * 330 * NOTE: "Initialize" uCode measures current voltage, which is assumed 331 * to be constant after this initial measurement. Voltage 332 * compensation for txpower (number of steps in gain table) 333 * may be calculated once and used until the next uCode bootload. 334 * 335 * 336 * 8) If setting up txpowers for MIMO rates (rate indexes 8-15, 24-31), 337 * adjust txpower for each transmitter chain, so txpower is balanced 338 * between the two chains. There are 5 pairs of tx_atten[group][chain] 339 * values in "initialize alive", one pair for each of 5 channel ranges: 340 * 341 * Group 0: 5 GHz channel 34-43 342 * Group 1: 5 GHz channel 44-70 343 * Group 2: 5 GHz channel 71-124 344 * Group 3: 5 GHz channel 125-200 345 * Group 4: 2.4 GHz all channels 346 * 347 * Add the tx_atten[group][chain] value to the index for the target chain. 348 * The values are signed, but are in pairs of 0 and a non-negative number, 349 * so as to reduce gain (if necessary) of the "hotter" channel. This 350 * avoids any need to double-check for regulatory compliance after 351 * this step. 352 * 353 * 354 * 9) If setting up for a CCK rate, lower the gain by adding a CCK compensation 355 * value to the index: 356 * 357 * Hardware rev B: 9 steps (4.5 dB) 358 * Hardware rev C: 5 steps (2.5 dB) 359 * 360 * Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG, 361 * bits [3:2], 1 = B, 2 = C. 362 * 363 * NOTE: This compensation is in addition to any saturation backoff that 364 * might have been applied in an earlier step. 365 * 366 * 367 * 10) Select the gain table, based on band (2.4 vs 5 GHz). 368 * 369 * Limit the adjusted index to stay within the table! 370 * 371 * 372 * 11) Read gain table entries for DSP and radio gain, place into appropriate 373 * location(s) in command (struct iwl4965_txpowertable_cmd). 374 */ 375 376/** 377 * When MIMO is used (2 transmitters operating simultaneously), driver should 378 * limit each transmitter to deliver a max of 3 dB below the regulatory limit 379 * for the device. That is, use half power for each transmitter, so total 380 * txpower is within regulatory limits. 381 * 382 * The value "6" represents number of steps in gain table to reduce power 3 dB. 383 * Each step is 1/2 dB. 384 */ 385#define IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION (6) 386 387/** 388 * CCK gain compensation. 389 * 390 * When calculating txpowers for CCK, after making sure that the target power 391 * is within regulatory and saturation limits, driver must additionally 392 * back off gain by adding these values to the gain table index. 393 * 394 * Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG, 395 * bits [3:2], 1 = B, 2 = C. 396 */ 397#define IWL_TX_POWER_CCK_COMPENSATION_B_STEP (9) 398#define IWL_TX_POWER_CCK_COMPENSATION_C_STEP (5) 399 400/* 401 * 4965 power supply voltage compensation for txpower 402 */ 403#define TX_POWER_IWL_VOLTAGE_CODES_PER_03V (7) 404 405/** 406 * Gain tables. 407 * 408 * The following tables contain pair of values for setting txpower, i.e. 409 * gain settings for the output of the device's digital signal processor (DSP), 410 * and for the analog gain structure of the transmitter. 411 * 412 * Each entry in the gain tables represents a step of 1/2 dB. Note that these 413 * are *relative* steps, not indications of absolute output power. Output 414 * power varies with temperature, voltage, and channel frequency, and also 415 * requires consideration of average power (to satisfy regulatory constraints), 416 * and peak power (to avoid distortion of the output signal). 417 * 418 * Each entry contains two values: 419 * 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained 420 * linear value that multiplies the output of the digital signal processor, 421 * before being sent to the analog radio. 422 * 2) Radio gain. This sets the analog gain of the radio Tx path. 423 * It is a coarser setting, and behaves in a logarithmic (dB) fashion. 424 * 425 * EEPROM contains factory calibration data for txpower. This maps actual 426 * measured txpower levels to gain settings in the "well known" tables 427 * below ("well-known" means here that both factory calibration *and* the 428 * driver work with the same table). 429 * 430 * There are separate tables for 2.4 GHz and 5 GHz bands. The 5 GHz table 431 * has an extension (into negative indexes), in case the driver needs to 432 * boost power setting for high device temperatures (higher than would be 433 * present during factory calibration). A 5 Ghz EEPROM index of "40" 434 * corresponds to the 49th entry in the table used by the driver. 435 */ 436#define MIN_TX_GAIN_INDEX (0) /* highest gain, lowest idx, 2.4 */ 437#define MIN_TX_GAIN_INDEX_52GHZ_EXT (-9) /* highest gain, lowest idx, 5 */ 438 439/** 440 * 2.4 GHz gain table 441 * 442 * Index Dsp gain Radio gain 443 * 0 110 0x3f (highest gain) 444 * 1 104 0x3f 445 * 2 98 0x3f 446 * 3 110 0x3e 447 * 4 104 0x3e 448 * 5 98 0x3e 449 * 6 110 0x3d 450 * 7 104 0x3d 451 * 8 98 0x3d 452 * 9 110 0x3c 453 * 10 104 0x3c 454 * 11 98 0x3c 455 * 12 110 0x3b 456 * 13 104 0x3b 457 * 14 98 0x3b 458 * 15 110 0x3a 459 * 16 104 0x3a 460 * 17 98 0x3a 461 * 18 110 0x39 462 * 19 104 0x39 463 * 20 98 0x39 464 * 21 110 0x38 465 * 22 104 0x38 466 * 23 98 0x38 467 * 24 110 0x37 468 * 25 104 0x37 469 * 26 98 0x37 470 * 27 110 0x36 471 * 28 104 0x36 472 * 29 98 0x36 473 * 30 110 0x35 474 * 31 104 0x35 475 * 32 98 0x35 476 * 33 110 0x34 477 * 34 104 0x34 478 * 35 98 0x34 479 * 36 110 0x33 480 * 37 104 0x33 481 * 38 98 0x33 482 * 39 110 0x32 483 * 40 104 0x32 484 * 41 98 0x32 485 * 42 110 0x31 486 * 43 104 0x31 487 * 44 98 0x31 488 * 45 110 0x30 489 * 46 104 0x30 490 * 47 98 0x30 491 * 48 110 0x6 492 * 49 104 0x6 493 * 50 98 0x6 494 * 51 110 0x5 495 * 52 104 0x5 496 * 53 98 0x5 497 * 54 110 0x4 498 * 55 104 0x4 499 * 56 98 0x4 500 * 57 110 0x3 501 * 58 104 0x3 502 * 59 98 0x3 503 * 60 110 0x2 504 * 61 104 0x2 505 * 62 98 0x2 506 * 63 110 0x1 507 * 64 104 0x1 508 * 65 98 0x1 509 * 66 110 0x0 510 * 67 104 0x0 511 * 68 98 0x0 512 * 69 97 0 513 * 70 96 0 514 * 71 95 0 515 * 72 94 0 516 * 73 93 0 517 * 74 92 0 518 * 75 91 0 519 * 76 90 0 520 * 77 89 0 521 * 78 88 0 522 * 79 87 0 523 * 80 86 0 524 * 81 85 0 525 * 82 84 0 526 * 83 83 0 527 * 84 82 0 528 * 85 81 0 529 * 86 80 0 530 * 87 79 0 531 * 88 78 0 532 * 89 77 0 533 * 90 76 0 534 * 91 75 0 535 * 92 74 0 536 * 93 73 0 537 * 94 72 0 538 * 95 71 0 539 * 96 70 0 540 * 97 69 0 541 * 98 68 0 542 */ 543 544/** 545 * 5 GHz gain table 546 * 547 * Index Dsp gain Radio gain 548 * -9 123 0x3F (highest gain) 549 * -8 117 0x3F 550 * -7 110 0x3F 551 * -6 104 0x3F 552 * -5 98 0x3F 553 * -4 110 0x3E 554 * -3 104 0x3E 555 * -2 98 0x3E 556 * -1 110 0x3D 557 * 0 104 0x3D 558 * 1 98 0x3D 559 * 2 110 0x3C 560 * 3 104 0x3C 561 * 4 98 0x3C 562 * 5 110 0x3B 563 * 6 104 0x3B 564 * 7 98 0x3B 565 * 8 110 0x3A 566 * 9 104 0x3A 567 * 10 98 0x3A 568 * 11 110 0x39 569 * 12 104 0x39 570 * 13 98 0x39 571 * 14 110 0x38 572 * 15 104 0x38 573 * 16 98 0x38 574 * 17 110 0x37 575 * 18 104 0x37 576 * 19 98 0x37 577 * 20 110 0x36 578 * 21 104 0x36 579 * 22 98 0x36 580 * 23 110 0x35 581 * 24 104 0x35 582 * 25 98 0x35 583 * 26 110 0x34 584 * 27 104 0x34 585 * 28 98 0x34 586 * 29 110 0x33 587 * 30 104 0x33 588 * 31 98 0x33 589 * 32 110 0x32 590 * 33 104 0x32 591 * 34 98 0x32 592 * 35 110 0x31 593 * 36 104 0x31 594 * 37 98 0x31 595 * 38 110 0x30 596 * 39 104 0x30 597 * 40 98 0x30 598 * 41 110 0x25 599 * 42 104 0x25 600 * 43 98 0x25 601 * 44 110 0x24 602 * 45 104 0x24 603 * 46 98 0x24 604 * 47 110 0x23 605 * 48 104 0x23 606 * 49 98 0x23 607 * 50 110 0x22 608 * 51 104 0x18 609 * 52 98 0x18 610 * 53 110 0x17 611 * 54 104 0x17 612 * 55 98 0x17 613 * 56 110 0x16 614 * 57 104 0x16 615 * 58 98 0x16 616 * 59 110 0x15 617 * 60 104 0x15 618 * 61 98 0x15 619 * 62 110 0x14 620 * 63 104 0x14 621 * 64 98 0x14 622 * 65 110 0x13 623 * 66 104 0x13 624 * 67 98 0x13 625 * 68 110 0x12 626 * 69 104 0x08 627 * 70 98 0x08 628 * 71 110 0x07 629 * 72 104 0x07 630 * 73 98 0x07 631 * 74 110 0x06 632 * 75 104 0x06 633 * 76 98 0x06 634 * 77 110 0x05 635 * 78 104 0x05 636 * 79 98 0x05 637 * 80 110 0x04 638 * 81 104 0x04 639 * 82 98 0x04 640 * 83 110 0x03 641 * 84 104 0x03 642 * 85 98 0x03 643 * 86 110 0x02 644 * 87 104 0x02 645 * 88 98 0x02 646 * 89 110 0x01 647 * 90 104 0x01 648 * 91 98 0x01 649 * 92 110 0x00 650 * 93 104 0x00 651 * 94 98 0x00 652 * 95 93 0x00 653 * 96 88 0x00 654 * 97 83 0x00 655 * 98 78 0x00 656 */ 657 658 659/** 660 * Sanity checks and default values for EEPROM regulatory levels. 661 * If EEPROM values fall outside MIN/MAX range, use default values. 662 * 663 * Regulatory limits refer to the maximum average txpower allowed by 664 * regulatory agencies in the geographies in which the device is meant 665 * to be operated. These limits are SKU-specific (i.e. geography-specific), 666 * and channel-specific; each channel has an individual regulatory limit 667 * listed in the EEPROM. 668 * 669 * Units are in half-dBm (i.e. "34" means 17 dBm). 670 */ 671#define IWL_TX_POWER_DEFAULT_REGULATORY_24 (34) 672#define IWL_TX_POWER_DEFAULT_REGULATORY_52 (34) 673#define IWL_TX_POWER_REGULATORY_MIN (0) 674#define IWL_TX_POWER_REGULATORY_MAX (34) 675 676/** 677 * Sanity checks and default values for EEPROM saturation levels. 678 * If EEPROM values fall outside MIN/MAX range, use default values. 679 * 680 * Saturation is the highest level that the output power amplifier can produce 681 * without significant clipping distortion. This is a "peak" power level. 682 * Different types of modulation (i.e. various "rates", and OFDM vs. CCK) 683 * require differing amounts of backoff, relative to their average power output, 684 * in order to avoid clipping distortion. 685 * 686 * Driver must make sure that it is violating neither the saturation limit, 687 * nor the regulatory limit, when calculating Tx power settings for various 688 * rates. 689 * 690 * Units are in half-dBm (i.e. "38" means 19 dBm). 691 */ 692#define IWL_TX_POWER_DEFAULT_SATURATION_24 (38) 693#define IWL_TX_POWER_DEFAULT_SATURATION_52 (38) 694#define IWL_TX_POWER_SATURATION_MIN (20) 695#define IWL_TX_POWER_SATURATION_MAX (50) 696 697/** 698 * Channel groups used for Tx Attenuation calibration (MIMO tx channel balance) 699 * and thermal Txpower calibration. 700 * 701 * When calculating txpower, driver must compensate for current device 702 * temperature; higher temperature requires higher gain. Driver must calculate 703 * current temperature (see "4965 temperature calculation"), then compare vs. 704 * factory calibration temperature in EEPROM; if current temperature is higher 705 * than factory temperature, driver must *increase* gain by proportions shown 706 * in table below. If current temperature is lower than factory, driver must 707 * *decrease* gain. 708 * 709 * Different frequency ranges require different compensation, as shown below. 710 */ 711/* Group 0, 5.2 GHz ch 34-43: 4.5 degrees per 1/2 dB. */ 712#define CALIB_IWL_TX_ATTEN_GR1_FCH 34 713#define CALIB_IWL_TX_ATTEN_GR1_LCH 43 714 715/* Group 1, 5.3 GHz ch 44-70: 4.0 degrees per 1/2 dB. */ 716#define CALIB_IWL_TX_ATTEN_GR2_FCH 44 717#define CALIB_IWL_TX_ATTEN_GR2_LCH 70 718 719/* Group 2, 5.5 GHz ch 71-124: 4.0 degrees per 1/2 dB. */ 720#define CALIB_IWL_TX_ATTEN_GR3_FCH 71 721#define CALIB_IWL_TX_ATTEN_GR3_LCH 124 722 723/* Group 3, 5.7 GHz ch 125-200: 4.0 degrees per 1/2 dB. */ 724#define CALIB_IWL_TX_ATTEN_GR4_FCH 125 725#define CALIB_IWL_TX_ATTEN_GR4_LCH 200 726 727/* Group 4, 2.4 GHz all channels: 3.5 degrees per 1/2 dB. */ 728#define CALIB_IWL_TX_ATTEN_GR5_FCH 1 729#define CALIB_IWL_TX_ATTEN_GR5_LCH 20 730 731enum { 732 CALIB_CH_GROUP_1 = 0, 733 CALIB_CH_GROUP_2 = 1, 734 CALIB_CH_GROUP_3 = 2, 735 CALIB_CH_GROUP_4 = 3, 736 CALIB_CH_GROUP_5 = 4, 737 CALIB_CH_GROUP_MAX 738}; 739 740/********************* END TXPOWER *****************************************/ 741 742 743/** 744 * Tx/Rx Queues 745 * 746 * Most communication between driver and 4965 is via queues of data buffers. 747 * For example, all commands that the driver issues to device's embedded 748 * controller (uCode) are via the command queue (one of the Tx queues). All 749 * uCode command responses/replies/notifications, including Rx frames, are 750 * conveyed from uCode to driver via the Rx queue. 751 * 752 * Most support for these queues, including handshake support, resides in 753 * structures in host DRAM, shared between the driver and the device. When 754 * allocating this memory, the driver must make sure that data written by 755 * the host CPU updates DRAM immediately (and does not get "stuck" in CPU's 756 * cache memory), so DRAM and cache are consistent, and the device can 757 * immediately see changes made by the driver. 758 * 759 * 4965 supports up to 16 DRAM-based Tx queues, and services these queues via 760 * up to 7 DMA channels (FIFOs). Each Tx queue is supported by a circular array 761 * in DRAM containing 256 Transmit Frame Descriptors (TFDs). 762 */ 763#define IWL49_NUM_FIFOS 7 764#define IWL49_CMD_FIFO_NUM 4 765#define IWL49_NUM_QUEUES 16 766#define IWL49_NUM_AMPDU_QUEUES 8 767 768 769/** 770 * struct iwl4965_schedq_bc_tbl 771 * 772 * Byte Count table 773 * 774 * Each Tx queue uses a byte-count table containing 320 entries: 775 * one 16-bit entry for each of 256 TFDs, plus an additional 64 entries that 776 * duplicate the first 64 entries (to avoid wrap-around within a Tx window; 777 * max Tx window is 64 TFDs). 778 * 779 * When driver sets up a new TFD, it must also enter the total byte count 780 * of the frame to be transmitted into the corresponding entry in the byte 781 * count table for the chosen Tx queue. If the TFD index is 0-63, the driver 782 * must duplicate the byte count entry in corresponding index 256-319. 783 * 784 * padding puts each byte count table on a 1024-byte boundary; 785 * 4965 assumes tables are separated by 1024 bytes. 786 */ 787struct iwl4965_scd_bc_tbl { 788 __le16 tfd_offset[TFD_QUEUE_BC_SIZE]; 789 u8 pad[1024 - (TFD_QUEUE_BC_SIZE) * sizeof(__le16)]; 790} __packed; 791 792#endif /* !__iwl_4965_hw_h__ */ 793