1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2005 - 2007 Intel Corporation. All rights reserved.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
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.
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,
24 * The full GNU General Public License is included in this distribution
25 * in the file called LICENSE.GPL.
27 * Contact Information:
28 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2005 - 2007 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
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
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.
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.
62 *****************************************************************************/
64 * Please use this file (iwl-4965-commands.h) only for uCode API definitions.
65 * Please use iwl-4965-hw.h for hardware-related definitions.
66 * Please use iwl-4965.h for driver implementation definitions.
69 #ifndef __iwl4965_commands_h__
70 #define __iwl4965_commands_h__
76 /* RXON and QOS commands */
78 REPLY_RXON_ASSOC = 0x11,
79 REPLY_QOS_PARAM = 0x13,
80 REPLY_RXON_TIMING = 0x14,
82 /* Multi-Station support */
84 REPLY_REMOVE_STA = 0x19, /* not used */
85 REPLY_REMOVE_ALL_STA = 0x1a, /* not used */
89 REPLY_RATE_SCALE = 0x47, /* 3945 only */
90 REPLY_LEDS_CMD = 0x48,
91 REPLY_TX_LINK_QUALITY_CMD = 0x4e, /* 4965 only */
94 RADAR_NOTIFICATION = 0x70, /* not used */
95 REPLY_QUIET_CMD = 0x71, /* not used */
96 REPLY_CHANNEL_SWITCH = 0x72,
97 CHANNEL_SWITCH_NOTIFICATION = 0x73,
98 REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74,
99 SPECTRUM_MEASURE_NOTIFICATION = 0x75,
101 /* Power Management */
102 POWER_TABLE_CMD = 0x77,
103 PM_SLEEP_NOTIFICATION = 0x7A,
104 PM_DEBUG_STATISTIC_NOTIFIC = 0x7B,
106 /* Scan commands and notifications */
107 REPLY_SCAN_CMD = 0x80,
108 REPLY_SCAN_ABORT_CMD = 0x81,
109 SCAN_START_NOTIFICATION = 0x82,
110 SCAN_RESULTS_NOTIFICATION = 0x83,
111 SCAN_COMPLETE_NOTIFICATION = 0x84,
113 /* IBSS/AP commands */
114 BEACON_NOTIFICATION = 0x90,
115 REPLY_TX_BEACON = 0x91,
116 WHO_IS_AWAKE_NOTIFICATION = 0x94, /* not used */
118 /* Miscellaneous commands */
119 QUIET_NOTIFICATION = 0x96, /* not used */
120 REPLY_TX_PWR_TABLE_CMD = 0x97,
121 MEASURE_ABORT_NOTIFICATION = 0x99, /* not used */
123 /* Bluetooth device coexistance config command */
124 REPLY_BT_CONFIG = 0x9b,
127 REPLY_STATISTICS_CMD = 0x9c,
128 STATISTICS_NOTIFICATION = 0x9d,
130 /* RF-KILL commands and notifications */
131 REPLY_CARD_STATE_CMD = 0xa0,
132 CARD_STATE_NOTIFICATION = 0xa1,
134 /* Missed beacons notification */
135 MISSED_BEACONS_NOTIFICATION = 0xa2,
137 REPLY_CT_KILL_CONFIG_CMD = 0xa4,
138 SENSITIVITY_CMD = 0xa8,
139 REPLY_PHY_CALIBRATION_CMD = 0xb0,
140 REPLY_RX_PHY_CMD = 0xc0,
141 REPLY_RX_MPDU_CMD = 0xc1,
142 REPLY_4965_RX = 0xc3,
143 REPLY_COMPRESSED_BA = 0xc5,
147 /******************************************************************************
149 * Commonly used structures and definitions:
150 * Command header, rate_n_flags, txpower
152 *****************************************************************************/
154 /* iwl4965_cmd_header flags value */
155 #define IWL_CMD_FAILED_MSK 0x40
158 * struct iwl4965_cmd_header
160 * This header format appears in the beginning of each command sent from the
161 * driver, and each response/notification received from uCode.
163 struct iwl4965_cmd_header {
164 u8 cmd; /* Command ID: REPLY_RXON, etc. */
165 u8 flags; /* IWL_CMD_* */
167 * The driver sets up the sequence number to values of its chosing.
168 * uCode does not use this value, but passes it back to the driver
169 * when sending the response to each driver-originated command, so
170 * the driver can match the response to the command. Since the values
171 * don't get used by uCode, the driver may set up an arbitrary format.
173 * There is one exception: uCode sets bit 15 when it originates
174 * the response/notification, i.e. when the response/notification
175 * is not a direct response to a command sent by the driver. For
176 * example, uCode issues REPLY_3945_RX when it sends a received frame
177 * to the driver; it is not a direct response to any driver command.
179 * The Linux driver uses the following format:
181 * 0:7 index/position within Tx queue
182 * 8:13 Tx queue selection
183 * 14:14 driver sets this to indicate command is in the 'huge'
184 * storage at the end of the command buffers, i.e. scan cmd
185 * 15:15 uCode sets this in uCode-originated response/notification
189 /* command or response/notification data follows immediately */
191 } __attribute__ ((packed));
194 * 4965 rate_n_flags bit fields
196 * rate_n_flags format is used in following 4965 commands:
197 * REPLY_4965_RX (response only)
198 * REPLY_TX (both command and response)
199 * REPLY_TX_LINK_QUALITY_CMD
201 * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"):
211 * 3: 0) Single stream (SISO)
212 * 1) Dual stream (MIMO)
214 * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps FAT duplicate data
216 * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"):
226 * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"):
232 #define RATE_MCS_CODE_MSK 0x7
233 #define RATE_MCS_MIMO_POS 3
234 #define RATE_MCS_MIMO_MSK 0x8
235 #define RATE_MCS_HT_DUP_POS 5
236 #define RATE_MCS_HT_DUP_MSK 0x20
238 /* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */
239 #define RATE_MCS_FLAGS_POS 8
240 #define RATE_MCS_HT_POS 8
241 #define RATE_MCS_HT_MSK 0x100
243 /* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
244 #define RATE_MCS_CCK_POS 9
245 #define RATE_MCS_CCK_MSK 0x200
247 /* Bit 10: (1) Use Green Field preamble */
248 #define RATE_MCS_GF_POS 10
249 #define RATE_MCS_GF_MSK 0x400
251 /* Bit 11: (1) Use 40Mhz FAT chnl width, (0) use 20 MHz legacy chnl width */
252 #define RATE_MCS_FAT_POS 11
253 #define RATE_MCS_FAT_MSK 0x800
255 /* Bit 12: (1) Duplicate data on both 20MHz chnls. FAT (bit 11) must be set. */
256 #define RATE_MCS_DUP_POS 12
257 #define RATE_MCS_DUP_MSK 0x1000
259 /* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
260 #define RATE_MCS_SGI_POS 13
261 #define RATE_MCS_SGI_MSK 0x2000
264 * rate_n_flags Tx antenna masks (4965 has 2 transmitters):
265 * bit14:15 01 B inactive, A active
266 * 10 B active, A inactive
269 #define RATE_MCS_ANT_A_POS 14
270 #define RATE_MCS_ANT_B_POS 15
271 #define RATE_MCS_ANT_A_MSK 0x4000
272 #define RATE_MCS_ANT_B_MSK 0x8000
273 #define RATE_MCS_ANT_AB_MSK 0xc000
277 * struct iwl4965_tx_power - txpower format used in REPLY_SCAN_CMD
279 * Scan uses only one transmitter, so only one analog/dsp gain pair is needed.
281 struct iwl4965_tx_power {
282 u8 tx_gain; /* gain for analog radio */
283 u8 dsp_atten; /* gain for DSP */
284 } __attribute__ ((packed));
286 #define POWER_TABLE_NUM_ENTRIES 33
287 #define POWER_TABLE_NUM_HT_OFDM_ENTRIES 32
288 #define POWER_TABLE_CCK_ENTRY 32
291 * union iwl4965_tx_power_dual_stream
293 * Host format used for REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
294 * Use __le32 version (struct tx_power_dual_stream) when building command.
296 * Driver provides radio gain and DSP attenuation settings to device in pairs,
297 * one value for each transmitter chain. The first value is for transmitter A,
298 * second for transmitter B.
300 * For SISO bit rates, both values in a pair should be identical.
301 * For MIMO rates, one value may be different from the other,
302 * in order to balance the Tx output between the two transmitters.
304 * See more details in doc for TXPOWER in iwl-4965-hw.h.
306 union iwl4965_tx_power_dual_stream {
309 u8 dsp_predis_atten[2];
315 * struct tx_power_dual_stream
317 * Table entries in REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
319 * Same format as iwl_tx_power_dual_stream, but __le32
321 struct tx_power_dual_stream {
323 } __attribute__ ((packed));
326 * struct iwl4965_tx_power_db
328 * Entire table within REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
330 struct iwl4965_tx_power_db {
331 struct tx_power_dual_stream power_tbl[POWER_TABLE_NUM_ENTRIES];
332 } __attribute__ ((packed));
335 /******************************************************************************
337 * Alive and Error Commands & Responses:
339 *****************************************************************************/
341 #define UCODE_VALID_OK __constant_cpu_to_le32(0x1)
342 #define INITIALIZE_SUBTYPE (9)
345 * ("Initialize") REPLY_ALIVE = 0x1 (response only, not a command)
347 * uCode issues this "initialize alive" notification once the initialization
348 * uCode image has completed its work, and is ready to load the runtime image.
349 * This is the *first* "alive" notification that the driver will receive after
350 * rebooting uCode; the "initialize" alive is indicated by subtype field == 9.
352 * See comments documenting "BSM" (bootstrap state machine).
354 * For 4965, this notification contains important calibration data for
355 * calculating txpower settings:
357 * 1) Power supply voltage indication. The voltage sensor outputs higher
358 * values for lower voltage, and vice versa.
360 * 2) Temperature measurement parameters, for each of two channel widths
361 * (20 MHz and 40 MHz) supported by the radios. Temperature sensing
362 * is done via one of the receiver chains, and channel width influences
365 * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation,
366 * for each of 5 frequency ranges.
368 struct iwl4965_init_alive_resp {
374 u8 ver_subtype; /* "9" for initialize alive */
376 __le32 log_event_table_ptr;
377 __le32 error_event_table_ptr;
381 /* calibration values from "initialize" uCode */
382 __le32 voltage; /* signed, higher value is lower voltage */
383 __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for FAT channel*/
384 __le32 therm_r2[2]; /* signed */
385 __le32 therm_r3[2]; /* signed */
386 __le32 therm_r4[2]; /* signed */
387 __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups,
389 } __attribute__ ((packed));
393 * REPLY_ALIVE = 0x1 (response only, not a command)
395 * uCode issues this "alive" notification once the runtime image is ready
396 * to receive commands from the driver. This is the *second* "alive"
397 * notification that the driver will receive after rebooting uCode;
398 * this "alive" is indicated by subtype field != 9.
400 * See comments documenting "BSM" (bootstrap state machine).
402 * This response includes two pointers to structures within the device's
403 * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging:
405 * 1) log_event_table_ptr indicates base of the event log. This traces
406 * a 256-entry history of uCode execution within a circular buffer.
407 * Its header format is:
409 * __le32 log_size; log capacity (in number of entries)
410 * __le32 type; (1) timestamp with each entry, (0) no timestamp
411 * __le32 wraps; # times uCode has wrapped to top of circular buffer
412 * __le32 write_index; next circular buffer entry that uCode would fill
414 * The header is followed by the circular buffer of log entries. Entries
415 * with timestamps have the following format:
417 * __le32 event_id; range 0 - 1500
418 * __le32 timestamp; low 32 bits of TSF (of network, if associated)
419 * __le32 data; event_id-specific data value
421 * Entries without timestamps contain only event_id and data.
423 * 2) error_event_table_ptr indicates base of the error log. This contains
424 * information about any uCode error that occurs. For 4965, the format
425 * of the error log is:
427 * __le32 valid; (nonzero) valid, (0) log is empty
428 * __le32 error_id; type of error
429 * __le32 pc; program counter
430 * __le32 blink1; branch link
431 * __le32 blink2; branch link
432 * __le32 ilink1; interrupt link
433 * __le32 ilink2; interrupt link
434 * __le32 data1; error-specific data
435 * __le32 data2; error-specific data
436 * __le32 line; source code line of error
437 * __le32 bcon_time; beacon timer
438 * __le32 tsf_low; network timestamp function timer
439 * __le32 tsf_hi; network timestamp function timer
441 * The Linux driver can print both logs to the system log when a uCode error
444 struct iwl4965_alive_resp {
450 u8 ver_subtype; /* not "9" for runtime alive */
452 __le32 log_event_table_ptr; /* SRAM address for event log */
453 __le32 error_event_table_ptr; /* SRAM address for error log */
456 } __attribute__ ((packed));
466 * REPLY_ERROR = 0x2 (response only, not a command)
468 struct iwl4965_error_resp {
472 __le16 bad_cmd_seq_num;
475 } __attribute__ ((packed));
477 /******************************************************************************
479 * RXON Commands & Responses:
481 *****************************************************************************/
484 * Rx config defines & structure
486 /* rx_config device types */
488 RXON_DEV_TYPE_AP = 1,
489 RXON_DEV_TYPE_ESS = 3,
490 RXON_DEV_TYPE_IBSS = 4,
491 RXON_DEV_TYPE_SNIFFER = 6,
495 #define RXON_RX_CHAIN_DRIVER_FORCE_MSK __constant_cpu_to_le16(0x1<<0)
496 #define RXON_RX_CHAIN_VALID_MSK __constant_cpu_to_le16(0x7<<1)
497 #define RXON_RX_CHAIN_VALID_POS (1)
498 #define RXON_RX_CHAIN_FORCE_SEL_MSK __constant_cpu_to_le16(0x7<<4)
499 #define RXON_RX_CHAIN_FORCE_SEL_POS (4)
500 #define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK __constant_cpu_to_le16(0x7<<7)
501 #define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7)
502 #define RXON_RX_CHAIN_CNT_MSK __constant_cpu_to_le16(0x3<<10)
503 #define RXON_RX_CHAIN_CNT_POS (10)
504 #define RXON_RX_CHAIN_MIMO_CNT_MSK __constant_cpu_to_le16(0x3<<12)
505 #define RXON_RX_CHAIN_MIMO_CNT_POS (12)
506 #define RXON_RX_CHAIN_MIMO_FORCE_MSK __constant_cpu_to_le16(0x1<<14)
507 #define RXON_RX_CHAIN_MIMO_FORCE_POS (14)
509 /* rx_config flags */
510 /* band & modulation selection */
511 #define RXON_FLG_BAND_24G_MSK __constant_cpu_to_le32(1 << 0)
512 #define RXON_FLG_CCK_MSK __constant_cpu_to_le32(1 << 1)
513 /* auto detection enable */
514 #define RXON_FLG_AUTO_DETECT_MSK __constant_cpu_to_le32(1 << 2)
515 /* TGg protection when tx */
516 #define RXON_FLG_TGG_PROTECT_MSK __constant_cpu_to_le32(1 << 3)
517 /* cck short slot & preamble */
518 #define RXON_FLG_SHORT_SLOT_MSK __constant_cpu_to_le32(1 << 4)
519 #define RXON_FLG_SHORT_PREAMBLE_MSK __constant_cpu_to_le32(1 << 5)
520 /* antenna selection */
521 #define RXON_FLG_DIS_DIV_MSK __constant_cpu_to_le32(1 << 7)
522 #define RXON_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0x0f00)
523 #define RXON_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
524 #define RXON_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
525 /* radar detection enable */
526 #define RXON_FLG_RADAR_DETECT_MSK __constant_cpu_to_le32(1 << 12)
527 #define RXON_FLG_TGJ_NARROW_BAND_MSK __constant_cpu_to_le32(1 << 13)
528 /* rx response to host with 8-byte TSF
529 * (according to ON_AIR deassertion) */
530 #define RXON_FLG_TSF2HOST_MSK __constant_cpu_to_le32(1 << 15)
534 #define RXON_FLG_CTRL_CHANNEL_LOC_POS (22)
535 #define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK __constant_cpu_to_le32(0x1<<22)
537 #define RXON_FLG_HT_OPERATING_MODE_POS (23)
539 #define RXON_FLG_HT_PROT_MSK __constant_cpu_to_le32(0x1<<23)
540 #define RXON_FLG_FAT_PROT_MSK __constant_cpu_to_le32(0x2<<23)
542 #define RXON_FLG_CHANNEL_MODE_POS (25)
543 #define RXON_FLG_CHANNEL_MODE_MSK __constant_cpu_to_le32(0x3<<25)
544 #define RXON_FLG_CHANNEL_MODE_PURE_40_MSK __constant_cpu_to_le32(0x1<<25)
545 #define RXON_FLG_CHANNEL_MODE_MIXED_MSK __constant_cpu_to_le32(0x2<<25)
547 /* rx_config filter flags */
548 /* accept all data frames */
549 #define RXON_FILTER_PROMISC_MSK __constant_cpu_to_le32(1 << 0)
550 /* pass control & management to host */
551 #define RXON_FILTER_CTL2HOST_MSK __constant_cpu_to_le32(1 << 1)
552 /* accept multi-cast */
553 #define RXON_FILTER_ACCEPT_GRP_MSK __constant_cpu_to_le32(1 << 2)
554 /* don't decrypt uni-cast frames */
555 #define RXON_FILTER_DIS_DECRYPT_MSK __constant_cpu_to_le32(1 << 3)
556 /* don't decrypt multi-cast frames */
557 #define RXON_FILTER_DIS_GRP_DECRYPT_MSK __constant_cpu_to_le32(1 << 4)
558 /* STA is associated */
559 #define RXON_FILTER_ASSOC_MSK __constant_cpu_to_le32(1 << 5)
560 /* transfer to host non bssid beacons in associated state */
561 #define RXON_FILTER_BCON_AWARE_MSK __constant_cpu_to_le32(1 << 6)
564 * REPLY_RXON = 0x10 (command, has simple generic response)
566 * RXON tunes the radio tuner to a service channel, and sets up a number
567 * of parameters that are used primarily for Rx, but also for Tx operations.
569 * NOTE: When tuning to a new channel, driver must set the
570 * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent
571 * info within the device, including the station tables, tx retry
572 * rate tables, and txpower tables. Driver must build a new station
573 * table and txpower table before transmitting anything on the RXON
576 * NOTE: All RXONs wipe clean the internal txpower table. Driver must
577 * issue a new REPLY_TX_PWR_TABLE_CMD after each REPLY_RXON (0x10),
578 * regardless of whether RXON_FILTER_ASSOC_MSK is set.
580 struct iwl4965_rxon_cmd {
585 u8 wlap_bssid_addr[6];
596 u8 ofdm_ht_single_stream_basic_rates;
597 u8 ofdm_ht_dual_stream_basic_rates;
598 } __attribute__ ((packed));
601 * REPLY_RXON_ASSOC = 0x11 (command, has simple generic response)
603 struct iwl4965_rxon_assoc_cmd {
608 u8 ofdm_ht_single_stream_basic_rates;
609 u8 ofdm_ht_dual_stream_basic_rates;
610 __le16 rx_chain_select_flags;
612 } __attribute__ ((packed));
615 * REPLY_RXON_TIMING = 0x14 (command, has simple generic response)
617 struct iwl4965_rxon_time_cmd {
619 __le16 beacon_interval;
621 __le32 beacon_init_val;
622 __le16 listen_interval;
624 } __attribute__ ((packed));
627 * REPLY_CHANNEL_SWITCH = 0x72 (command, has simple generic response)
629 struct iwl4965_channel_switch_cmd {
634 __le32 rxon_filter_flags;
636 struct iwl4965_tx_power_db tx_power;
637 } __attribute__ ((packed));
640 * CHANNEL_SWITCH_NOTIFICATION = 0x73 (notification only, not a command)
642 struct iwl4965_csa_notification {
645 __le32 status; /* 0 - OK, 1 - fail */
646 } __attribute__ ((packed));
648 /******************************************************************************
650 * Quality-of-Service (QOS) Commands & Responses:
652 *****************************************************************************/
655 * struct iwl_ac_qos -- QOS timing params for REPLY_QOS_PARAM
656 * One for each of 4 EDCA access categories in struct iwl_qosparam_cmd
658 * @cw_min: Contention window, start value in numbers of slots.
659 * Should be a power-of-2, minus 1. Device's default is 0x0f.
660 * @cw_max: Contention window, max value in numbers of slots.
661 * Should be a power-of-2, minus 1. Device's default is 0x3f.
662 * @aifsn: Number of slots in Arbitration Interframe Space (before
663 * performing random backoff timing prior to Tx). Device default 1.
664 * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0.
666 * Device will automatically increase contention window by (2*CW) + 1 for each
667 * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW
668 * value, to cap the CW value.
670 struct iwl4965_ac_qos {
676 } __attribute__ ((packed));
678 /* QoS flags defines */
679 #define QOS_PARAM_FLG_UPDATE_EDCA_MSK __constant_cpu_to_le32(0x01)
680 #define QOS_PARAM_FLG_TGN_MSK __constant_cpu_to_le32(0x02)
681 #define QOS_PARAM_FLG_TXOP_TYPE_MSK __constant_cpu_to_le32(0x10)
683 /* Number of Access Categories (AC) (EDCA), queues 0..3 */
687 * REPLY_QOS_PARAM = 0x13 (command, has simple generic response)
689 * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs
690 * 0: Background, 1: Best Effort, 2: Video, 3: Voice.
692 struct iwl4965_qosparam_cmd {
694 struct iwl4965_ac_qos ac[AC_NUM];
695 } __attribute__ ((packed));
697 /******************************************************************************
699 * Add/Modify Stations Commands & Responses:
701 *****************************************************************************/
703 * Multi station support
706 /* Special, dedicated locations within device's station table */
708 #define IWL_MULTICAST_ID 1
710 #define IWL4965_BROADCAST_ID 31
711 #define IWL4965_STATION_COUNT 32
713 #define IWL_STATION_COUNT 32 /* MAX(3945,4965)*/
714 #define IWL_INVALID_STATION 255
716 #define STA_FLG_PWR_SAVE_MSK __constant_cpu_to_le32(1<<8);
717 #define STA_FLG_RTS_MIMO_PROT_MSK __constant_cpu_to_le32(1 << 17)
718 #define STA_FLG_AGG_MPDU_8US_MSK __constant_cpu_to_le32(1 << 18)
719 #define STA_FLG_MAX_AGG_SIZE_POS (19)
720 #define STA_FLG_MAX_AGG_SIZE_MSK __constant_cpu_to_le32(3 << 19)
721 #define STA_FLG_FAT_EN_MSK __constant_cpu_to_le32(1 << 21)
722 #define STA_FLG_MIMO_DIS_MSK __constant_cpu_to_le32(1 << 22)
723 #define STA_FLG_AGG_MPDU_DENSITY_POS (23)
724 #define STA_FLG_AGG_MPDU_DENSITY_MSK __constant_cpu_to_le32(7 << 23)
726 /* Use in mode field. 1: modify existing entry, 0: add new station entry */
727 #define STA_CONTROL_MODIFY_MSK 0x01
729 /* key flags __le16*/
730 #define STA_KEY_FLG_ENCRYPT_MSK __constant_cpu_to_le16(0x7)
731 #define STA_KEY_FLG_NO_ENC __constant_cpu_to_le16(0x0)
732 #define STA_KEY_FLG_WEP __constant_cpu_to_le16(0x1)
733 #define STA_KEY_FLG_CCMP __constant_cpu_to_le16(0x2)
734 #define STA_KEY_FLG_TKIP __constant_cpu_to_le16(0x3)
736 #define STA_KEY_FLG_KEYID_POS 8
737 #define STA_KEY_FLG_INVALID __constant_cpu_to_le16(0x0800)
739 /* Flags indicate whether to modify vs. don't change various station params */
740 #define STA_MODIFY_KEY_MASK 0x01
741 #define STA_MODIFY_TID_DISABLE_TX 0x02
742 #define STA_MODIFY_TX_RATE_MSK 0x04
743 #define STA_MODIFY_ADDBA_TID_MSK 0x08
744 #define STA_MODIFY_DELBA_TID_MSK 0x10
746 /* Receiver address (actually, Rx station's index into station table),
747 * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */
748 #define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
750 struct iwl4965_keyinfo {
752 u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
754 __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */
756 u8 key[16]; /* 16-byte unicast decryption key */
757 } __attribute__ ((packed));
760 * struct sta_id_modify
761 * @addr[ETH_ALEN]: station's MAC address
762 * @sta_id: index of station in uCode's station table
763 * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change
765 * Driver selects unused table index when adding new station,
766 * or the index to a pre-existing station entry when modifying that station.
767 * Some indexes have special purposes (IWL_AP_ID, index 0, is for AP).
769 * modify_mask flags select which parameters to modify vs. leave alone.
771 struct sta_id_modify {
777 } __attribute__ ((packed));
780 * REPLY_ADD_STA = 0x18 (command)
782 * The device contains an internal table of per-station information,
783 * with info on security keys, aggregation parameters, and Tx rates for
784 * initial Tx attempt and any retries (4965 uses REPLY_TX_LINK_QUALITY_CMD,
785 * 3945 uses REPLY_RATE_SCALE to set up rate tables).
787 * REPLY_ADD_STA sets up the table entry for one station, either creating
788 * a new entry, or modifying a pre-existing one.
790 * NOTE: RXON command (without "associated" bit set) wipes the station table
791 * clean. Moving into RF_KILL state does this also. Driver must set up
792 * new station table before transmitting anything on the RXON channel
793 * (except active scans or active measurements; those commands carry
794 * their own txpower/rate setup data).
796 * When getting started on a new channel, driver must set up the
797 * IWL_BROADCAST_ID entry (last entry in the table). For a client
798 * station in a BSS, once an AP is selected, driver sets up the AP STA
799 * in the IWL_AP_ID entry (1st entry in the table). BROADCAST and AP
800 * are all that are needed for a BSS client station. If the device is
801 * used as AP, or in an IBSS network, driver must set up station table
802 * entries for all STAs in network, starting with index IWL_STA_ID.
804 struct iwl4965_addsta_cmd {
805 u8 mode; /* 1: modify existing, 0: add new station */
807 struct sta_id_modify sta;
808 struct iwl4965_keyinfo key;
809 __le32 station_flags; /* STA_FLG_* */
810 __le32 station_flags_msk; /* STA_FLG_* */
812 /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID)
813 * corresponding to bit (e.g. bit 5 controls TID 5).
814 * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */
815 __le16 tid_disable_tx;
819 /* TID for which to add block-ack support.
820 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
821 u8 add_immediate_ba_tid;
823 /* TID for which to remove block-ack support.
824 * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */
825 u8 remove_immediate_ba_tid;
827 /* Starting Sequence Number for added block-ack support.
828 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
829 __le16 add_immediate_ba_ssn;
832 } __attribute__ ((packed));
834 #define ADD_STA_SUCCESS_MSK 0x1
835 #define ADD_STA_NO_ROOM_IN_TABLE 0x2
836 #define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4
837 #define ADD_STA_MODIFY_NON_EXIST_STA 0x8
839 * REPLY_ADD_STA = 0x18 (response)
841 struct iwl4965_add_sta_resp {
842 u8 status; /* ADD_STA_* */
843 } __attribute__ ((packed));
846 /******************************************************************************
850 *****************************************************************************/
852 struct iwl4965_rx_frame_stats {
860 } __attribute__ ((packed));
862 struct iwl4965_rx_frame_hdr {
869 } __attribute__ ((packed));
871 #define RX_RES_STATUS_NO_CRC32_ERROR __constant_cpu_to_le32(1 << 0)
872 #define RX_RES_STATUS_NO_RXE_OVERFLOW __constant_cpu_to_le32(1 << 1)
874 #define RX_RES_PHY_FLAGS_BAND_24_MSK __constant_cpu_to_le16(1 << 0)
875 #define RX_RES_PHY_FLAGS_MOD_CCK_MSK __constant_cpu_to_le16(1 << 1)
876 #define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK __constant_cpu_to_le16(1 << 2)
877 #define RX_RES_PHY_FLAGS_NARROW_BAND_MSK __constant_cpu_to_le16(1 << 3)
878 #define RX_RES_PHY_FLAGS_ANTENNA_MSK __constant_cpu_to_le16(0xf0)
880 #define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8)
881 #define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8)
882 #define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8)
883 #define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8)
884 #define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8)
886 #define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11)
887 #define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11)
888 #define RX_RES_STATUS_DECRYPT_OK (0x3 << 11)
889 #define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11)
890 #define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11)
892 struct iwl4965_rx_frame_end {
895 __le32 beacon_timestamp;
896 } __attribute__ ((packed));
899 * REPLY_3945_RX = 0x1b (response only, not a command)
901 * NOTE: DO NOT dereference from casts to this structure
902 * It is provided only for calculating minimum data set size.
903 * The actual offsets of the hdr and end are dynamic based on
906 struct iwl4965_rx_frame {
907 struct iwl4965_rx_frame_stats stats;
908 struct iwl4965_rx_frame_hdr hdr;
909 struct iwl4965_rx_frame_end end;
910 } __attribute__ ((packed));
912 /* Fixed (non-configurable) rx data from phy */
913 #define RX_PHY_FLAGS_ANTENNAE_OFFSET (4)
914 #define RX_PHY_FLAGS_ANTENNAE_MASK (0x70)
915 #define IWL_AGC_DB_MASK (0x3f80) /* MASK(7,13) */
916 #define IWL_AGC_DB_POS (7)
917 struct iwl4965_rx_non_cfg_phy {
918 __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */
919 __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */
920 u8 rssi_info[6]; /* we use even entries, 0/2/4 for A/B/C rssi */
922 } __attribute__ ((packed));
925 * REPLY_4965_RX = 0xc3 (response only, not a command)
926 * Used only for legacy (non 11n) frames.
928 #define RX_RES_PHY_CNT 14
929 struct iwl4965_rx_phy_res {
930 u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */
931 u8 cfg_phy_cnt; /* configurable DSP phy data byte count */
932 u8 stat_id; /* configurable DSP phy data set ID */
934 __le64 timestamp; /* TSF at on air rise */
935 __le32 beacon_time_stamp; /* beacon at on-air rise */
936 __le16 phy_flags; /* general phy flags: band, modulation, ... */
937 __le16 channel; /* channel number */
938 __le16 non_cfg_phy[RX_RES_PHY_CNT]; /* upto 14 phy entries */
940 __le32 rate_n_flags; /* RATE_MCS_* */
941 __le16 byte_count; /* frame's byte-count */
943 } __attribute__ ((packed));
945 struct iwl4965_rx_mpdu_res_start {
948 } __attribute__ ((packed));
951 /******************************************************************************
953 * Tx Commands & Responses:
955 * Driver must place each REPLY_TX command into one of the prioritized Tx
956 * queues in host DRAM, shared between driver and device (see comments for
957 * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode
958 * are preparing to transmit, the device pulls the Tx command over the PCI
959 * bus via one of the device's Tx DMA channels, to fill an internal FIFO
960 * from which data will be transmitted.
962 * uCode handles all timing and protocol related to control frames
963 * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler
964 * handle reception of block-acks; uCode updates the host driver via
965 * REPLY_COMPRESSED_BA (4965).
967 * uCode handles retrying Tx when an ACK is expected but not received.
968 * This includes trying lower data rates than the one requested in the Tx
969 * command, as set up by the REPLY_RATE_SCALE (for 3945) or
970 * REPLY_TX_LINK_QUALITY_CMD (4965).
972 * Driver sets up transmit power for various rates via REPLY_TX_PWR_TABLE_CMD.
973 * This command must be executed after every RXON command, before Tx can occur.
974 *****************************************************************************/
976 /* REPLY_TX Tx flags field */
978 /* 1: Use Request-To-Send protocol before this frame.
979 * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. */
980 #define TX_CMD_FLG_RTS_MSK __constant_cpu_to_le32(1 << 1)
982 /* 1: Transmit Clear-To-Send to self before this frame.
983 * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames.
984 * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. */
985 #define TX_CMD_FLG_CTS_MSK __constant_cpu_to_le32(1 << 2)
987 /* 1: Expect ACK from receiving station
988 * 0: Don't expect ACK (MAC header's duration field s/b 0)
989 * Set this for unicast frames, but not broadcast/multicast. */
990 #define TX_CMD_FLG_ACK_MSK __constant_cpu_to_le32(1 << 3)
993 * 1: Use rate scale table (see REPLY_TX_LINK_QUALITY_CMD).
994 * Tx command's initial_rate_index indicates first rate to try;
995 * uCode walks through table for additional Tx attempts.
996 * 0: Use Tx rate/MCS from Tx command's rate_n_flags field.
997 * This rate will be used for all Tx attempts; it will not be scaled. */
998 #define TX_CMD_FLG_STA_RATE_MSK __constant_cpu_to_le32(1 << 4)
1000 /* 1: Expect immediate block-ack.
1001 * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */
1002 #define TX_CMD_FLG_IMM_BA_RSP_MASK __constant_cpu_to_le32(1 << 6)
1004 /* 1: Frame requires full Tx-Op protection.
1005 * Set this if either RTS or CTS Tx Flag gets set. */
1006 #define TX_CMD_FLG_FULL_TXOP_PROT_MSK __constant_cpu_to_le32(1 << 7)
1008 /* Tx antenna selection field; used only for 3945, reserved (0) for 4965.
1009 * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */
1010 #define TX_CMD_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0xf00)
1011 #define TX_CMD_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
1012 #define TX_CMD_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
1014 /* 1: Ignore Bluetooth priority for this frame.
1015 * 0: Delay Tx until Bluetooth device is done (normal usage). */
1016 #define TX_CMD_FLG_BT_DIS_MSK __constant_cpu_to_le32(1 << 12)
1018 /* 1: uCode overrides sequence control field in MAC header.
1019 * 0: Driver provides sequence control field in MAC header.
1020 * Set this for management frames, non-QOS data frames, non-unicast frames,
1021 * and also in Tx command embedded in REPLY_SCAN_CMD for active scans. */
1022 #define TX_CMD_FLG_SEQ_CTL_MSK __constant_cpu_to_le32(1 << 13)
1024 /* 1: This frame is non-last MPDU; more fragments are coming.
1025 * 0: Last fragment, or not using fragmentation. */
1026 #define TX_CMD_FLG_MORE_FRAG_MSK __constant_cpu_to_le32(1 << 14)
1028 /* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame.
1029 * 0: No TSF required in outgoing frame.
1030 * Set this for transmitting beacons and probe responses. */
1031 #define TX_CMD_FLG_TSF_MSK __constant_cpu_to_le32(1 << 16)
1033 /* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword
1034 * alignment of frame's payload data field.
1036 * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4
1037 * field (but not both). Driver must align frame data (i.e. data following
1038 * MAC header) to DWORD boundary. */
1039 #define TX_CMD_FLG_MH_PAD_MSK __constant_cpu_to_le32(1 << 20)
1041 /* HCCA-AP - disable duration overwriting. */
1042 #define TX_CMD_FLG_DUR_MSK __constant_cpu_to_le32(1 << 25)
1046 * TX command security control
1048 #define TX_CMD_SEC_WEP 0x01
1049 #define TX_CMD_SEC_CCM 0x02
1050 #define TX_CMD_SEC_TKIP 0x03
1051 #define TX_CMD_SEC_MSK 0x03
1052 #define TX_CMD_SEC_SHIFT 6
1053 #define TX_CMD_SEC_KEY128 0x08
1056 * 4965 uCode updates these Tx attempt count values in host DRAM.
1057 * Used for managing Tx retries when expecting block-acks.
1058 * Driver should set these fields to 0.
1060 struct iwl4965_dram_scratch {
1061 u8 try_cnt; /* Tx attempts */
1062 u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */
1064 } __attribute__ ((packed));
1067 * REPLY_TX = 0x1c (command)
1069 struct iwl4965_tx_cmd {
1072 * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size,
1073 * + 8 byte IV for CCM or TKIP (not used for WEP)
1075 * + 8-byte MIC (not used for CCM/WEP)
1076 * NOTE: Does not include Tx command bytes, post-MAC pad bytes,
1077 * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i
1078 * Range: 14-2342 bytes.
1083 * MPDU or MSDU byte count for next frame.
1084 * Used for fragmentation and bursting, but not 11n aggregation.
1085 * Same as "len", but for next frame. Set to 0 if not applicable.
1087 __le16 next_frame_len;
1089 __le32 tx_flags; /* TX_CMD_FLG_* */
1091 /* 4965's uCode may modify this field of the Tx command (in host DRAM!).
1092 * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */
1093 struct iwl4965_dram_scratch scratch;
1095 /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */
1096 __le32 rate_n_flags; /* RATE_MCS_* */
1098 /* Index of destination station in uCode's station table */
1101 /* Type of security encryption: CCM or TKIP */
1102 u8 sec_ctl; /* TX_CMD_SEC_* */
1105 * Index into rate table (see REPLY_TX_LINK_QUALITY_CMD) for initial
1106 * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for
1107 * data frames, this field may be used to selectively reduce initial
1108 * rate (via non-0 value) for special frames (e.g. management), while
1109 * still supporting rate scaling for all frames.
1111 u8 initial_rate_index;
1114 __le16 next_frame_flags;
1121 /* Host DRAM physical address pointer to "scratch" in this command.
1122 * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */
1123 __le32 dram_lsb_ptr;
1126 u8 rts_retry_limit; /*byte 50 */
1127 u8 data_retry_limit; /*byte 51 */
1130 __le16 pm_frame_timeout;
1131 __le16 attempt_duration;
1135 * Duration of EDCA burst Tx Opportunity, in 32-usec units.
1136 * Set this if txop time is not specified by HCCA protocol (e.g. by AP).
1141 * MAC header goes here, followed by 2 bytes padding if MAC header
1142 * length is 26 or 30 bytes, followed by payload data
1145 struct ieee80211_hdr hdr[0];
1146 } __attribute__ ((packed));
1148 /* TX command response is sent after *all* transmission attempts.
1152 * TX_STATUS_FAIL_NEXT_FRAG
1154 * If the fragment flag in the MAC header for the frame being transmitted
1155 * is set and there is insufficient time to transmit the next frame, the
1156 * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'.
1158 * TX_STATUS_FIFO_UNDERRUN
1160 * Indicates the host did not provide bytes to the FIFO fast enough while
1161 * a TX was in progress.
1163 * TX_STATUS_FAIL_MGMNT_ABORT
1165 * This status is only possible if the ABORT ON MGMT RX parameter was
1166 * set to true with the TX command.
1168 * If the MSB of the status parameter is set then an abort sequence is
1169 * required. This sequence consists of the host activating the TX Abort
1170 * control line, and then waiting for the TX Abort command response. This
1171 * indicates that a the device is no longer in a transmit state, and that the
1172 * command FIFO has been cleared. The host must then deactivate the TX Abort
1173 * control line. Receiving is still allowed in this case.
1176 TX_STATUS_SUCCESS = 0x01,
1177 TX_STATUS_DIRECT_DONE = 0x02,
1178 TX_STATUS_FAIL_SHORT_LIMIT = 0x82,
1179 TX_STATUS_FAIL_LONG_LIMIT = 0x83,
1180 TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84,
1181 TX_STATUS_FAIL_MGMNT_ABORT = 0x85,
1182 TX_STATUS_FAIL_NEXT_FRAG = 0x86,
1183 TX_STATUS_FAIL_LIFE_EXPIRE = 0x87,
1184 TX_STATUS_FAIL_DEST_PS = 0x88,
1185 TX_STATUS_FAIL_ABORTED = 0x89,
1186 TX_STATUS_FAIL_BT_RETRY = 0x8a,
1187 TX_STATUS_FAIL_STA_INVALID = 0x8b,
1188 TX_STATUS_FAIL_FRAG_DROPPED = 0x8c,
1189 TX_STATUS_FAIL_TID_DISABLE = 0x8d,
1190 TX_STATUS_FAIL_FRAME_FLUSHED = 0x8e,
1191 TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f,
1192 TX_STATUS_FAIL_TX_LOCKED = 0x90,
1193 TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91,
1196 #define TX_PACKET_MODE_REGULAR 0x0000
1197 #define TX_PACKET_MODE_BURST_SEQ 0x0100
1198 #define TX_PACKET_MODE_BURST_FIRST 0x0200
1201 TX_POWER_PA_NOT_ACTIVE = 0x0,
1205 TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */
1206 TX_STATUS_DELAY_MSK = 0x00000040,
1207 TX_STATUS_ABORT_MSK = 0x00000080,
1208 TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */
1209 TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */
1210 TX_RESERVED = 0x00780000, /* bits 19:22 */
1211 TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */
1212 TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */
1215 /* *******************************
1216 * TX aggregation status
1217 ******************************* */
1220 AGG_TX_STATE_TRANSMITTED = 0x00,
1221 AGG_TX_STATE_UNDERRUN_MSK = 0x01,
1222 AGG_TX_STATE_BT_PRIO_MSK = 0x02,
1223 AGG_TX_STATE_FEW_BYTES_MSK = 0x04,
1224 AGG_TX_STATE_ABORT_MSK = 0x08,
1225 AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10,
1226 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20,
1227 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK = 0x40,
1228 AGG_TX_STATE_SCD_QUERY_MSK = 0x80,
1229 AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100,
1230 AGG_TX_STATE_RESPONSE_MSK = 0x1ff,
1231 AGG_TX_STATE_DUMP_TX_MSK = 0x200,
1232 AGG_TX_STATE_DELAY_TX_MSK = 0x400
1235 #define AGG_TX_STATE_LAST_SENT_MSK \
1236 (AGG_TX_STATE_LAST_SENT_TTL_MSK | \
1237 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK | \
1238 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK)
1240 /* # tx attempts for first frame in aggregation */
1241 #define AGG_TX_STATE_TRY_CNT_POS 12
1242 #define AGG_TX_STATE_TRY_CNT_MSK 0xf000
1244 /* Command ID and sequence number of Tx command for this frame */
1245 #define AGG_TX_STATE_SEQ_NUM_POS 16
1246 #define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000
1249 * REPLY_TX = 0x1c (response)
1251 * This response may be in one of two slightly different formats, indicated
1252 * by the frame_count field:
1254 * 1) No aggregation (frame_count == 1). This reports Tx results for
1255 * a single frame. Multiple attempts, at various bit rates, may have
1256 * been made for this frame.
1258 * 2) Aggregation (frame_count > 1). This reports Tx results for
1259 * 2 or more frames that used block-acknowledge. All frames were
1260 * transmitted at same rate. Rate scaling may have been used if first
1261 * frame in this new agg block failed in previous agg block(s).
1263 * Note that, for aggregation, ACK (block-ack) status is not delivered here;
1264 * block-ack has not been received by the time the 4965 records this status.
1265 * This status relates to reasons the tx might have been blocked or aborted
1266 * within the sending station (this 4965), rather than whether it was
1267 * received successfully by the destination station.
1269 struct iwl4965_tx_resp {
1270 u8 frame_count; /* 1 no aggregation, >1 aggregation */
1271 u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */
1272 u8 failure_rts; /* # failures due to unsuccessful RTS */
1273 u8 failure_frame; /* # failures due to no ACK (unused for agg) */
1275 /* For non-agg: Rate at which frame was successful.
1276 * For agg: Rate at which all frames were transmitted. */
1277 __le32 rate_n_flags; /* RATE_MCS_* */
1279 /* For non-agg: RTS + CTS + frame tx attempts time + ACK.
1280 * For agg: RTS + CTS + aggregation tx time + block-ack time. */
1281 __le16 wireless_media_time; /* uSecs */
1284 __le32 pa_power1; /* RF power amplifier measurement (not used) */
1288 * For non-agg: frame status TX_STATUS_*
1289 * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status
1290 * fields follow this one, up to frame_count.
1292 * 11- 0: AGG_TX_STATE_* status code
1293 * 15-12: Retry count for 1st frame in aggregation (retries
1294 * occur if tx failed for this frame when it was a
1295 * member of a previous aggregation block). If rate
1296 * scaling is used, retry count indicates the rate
1297 * table entry used for all frames in the new agg.
1298 * 31-16: Sequence # for this frame's Tx cmd (not SSN!)
1300 __le32 status; /* TX status (for aggregation status of 1st frame) */
1301 } __attribute__ ((packed));
1304 * REPLY_COMPRESSED_BA = 0xc5 (response only, not a command)
1306 * Reports Block-Acknowledge from recipient station
1308 struct iwl4965_compressed_ba_resp {
1309 __le32 sta_addr_lo32;
1310 __le16 sta_addr_hi16;
1313 /* Index of recipient (BA-sending) station in uCode's station table */
1321 } __attribute__ ((packed));
1324 * REPLY_TX_PWR_TABLE_CMD = 0x97 (command, has simple generic response)
1326 * See details under "TXPOWER" in iwl-4965-hw.h.
1328 struct iwl4965_txpowertable_cmd {
1329 u8 band; /* 0: 5 GHz, 1: 2.4 GHz */
1332 struct iwl4965_tx_power_db tx_power;
1333 } __attribute__ ((packed));
1335 /*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */
1336 #define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1<<0)
1338 /* # of EDCA prioritized tx fifos */
1339 #define LINK_QUAL_AC_NUM AC_NUM
1341 /* # entries in rate scale table to support Tx retries */
1342 #define LINK_QUAL_MAX_RETRY_NUM 16
1344 /* Tx antenna selection values */
1345 #define LINK_QUAL_ANT_A_MSK (1<<0)
1346 #define LINK_QUAL_ANT_B_MSK (1<<1)
1347 #define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK)
1351 * struct iwl4965_link_qual_general_params
1353 * Used in REPLY_TX_LINK_QUALITY_CMD
1355 struct iwl4965_link_qual_general_params {
1358 /* No entries at or above this (driver chosen) index contain MIMO */
1361 /* Best single antenna to use for single stream (legacy, SISO). */
1362 u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */
1364 /* Best antennas to use for MIMO (unused for 4965, assumes both). */
1365 u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */
1368 * If driver needs to use different initial rates for different
1369 * EDCA QOS access categories (as implemented by tx fifos 0-3),
1370 * this table will set that up, by indicating the indexes in the
1371 * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start.
1372 * Otherwise, driver should set all entries to 0.
1375 * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice
1376 * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3.
1378 u8 start_rate_index[LINK_QUAL_AC_NUM];
1379 } __attribute__ ((packed));
1382 * struct iwl4965_link_qual_agg_params
1384 * Used in REPLY_TX_LINK_QUALITY_CMD
1386 struct iwl4965_link_qual_agg_params {
1388 /* Maximum number of uSec in aggregation.
1389 * Driver should set this to 4000 (4 milliseconds). */
1390 __le16 agg_time_limit;
1393 * Number of Tx retries allowed for a frame, before that frame will
1394 * no longer be considered for the start of an aggregation sequence
1395 * (scheduler will then try to tx it as single frame).
1396 * Driver should set this to 3.
1398 u8 agg_dis_start_th;
1401 * Maximum number of frames in aggregation.
1402 * 0 = no limit (default). 1 = no aggregation.
1403 * Other values = max # frames in aggregation.
1405 u8 agg_frame_cnt_limit;
1408 } __attribute__ ((packed));
1411 * REPLY_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response)
1413 * For 4965 only; 3945 uses REPLY_RATE_SCALE.
1415 * Each station in the 4965's internal station table has its own table of 16
1416 * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when
1417 * an ACK is not received. This command replaces the entire table for
1420 * NOTE: Station must already be in 4965's station table. Use REPLY_ADD_STA.
1422 * The rate scaling procedures described below work well. Of course, other
1423 * procedures are possible, and may work better for particular environments.
1426 * FILLING THE RATE TABLE
1428 * Given a particular initial rate and mode, as determined by the rate
1429 * scaling algorithm described below, the Linux driver uses the following
1430 * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the
1431 * Link Quality command:
1434 * 1) If using High-throughput (HT) (SISO or MIMO) initial rate:
1435 * a) Use this same initial rate for first 3 entries.
1436 * b) Find next lower available rate using same mode (SISO or MIMO),
1437 * use for next 3 entries. If no lower rate available, switch to
1438 * legacy mode (no FAT channel, no MIMO, no short guard interval).
1439 * c) If using MIMO, set command's mimo_delimiter to number of entries
1440 * using MIMO (3 or 6).
1441 * d) After trying 2 HT rates, switch to legacy mode (no FAT channel,
1442 * no MIMO, no short guard interval), at the next lower bit rate
1443 * (e.g. if second HT bit rate was 54, try 48 legacy), and follow
1444 * legacy procedure for remaining table entries.
1446 * 2) If using legacy initial rate:
1447 * a) Use the initial rate for only one entry.
1448 * b) For each following entry, reduce the rate to next lower available
1449 * rate, until reaching the lowest available rate.
1450 * c) When reducing rate, also switch antenna selection.
1451 * d) Once lowest available rate is reached, repeat this rate until
1452 * rate table is filled (16 entries), switching antenna each entry.
1455 * ACCUMULATING HISTORY
1457 * The rate scaling algorithm for 4965, as implemented in Linux driver, uses
1458 * two sets of frame Tx success history: One for the current/active modulation
1459 * mode, and one for a speculative/search mode that is being attempted. If the
1460 * speculative mode turns out to be more effective (i.e. actual transfer
1461 * rate is better), then the driver continues to use the speculative mode
1462 * as the new current active mode.
1464 * Each history set contains, separately for each possible rate, data for a
1465 * sliding window of the 62 most recent tx attempts at that rate. The data
1466 * includes a shifting bitmap of success(1)/failure(0), and sums of successful
1467 * and attempted frames, from which the driver can additionally calculate a
1468 * success ratio (success / attempted) and number of failures
1469 * (attempted - success), and control the size of the window (attempted).
1470 * The driver uses the bit map to remove successes from the success sum, as
1471 * the oldest tx attempts fall out of the window.
1473 * When the 4965 makes multiple tx attempts for a given frame, each attempt
1474 * might be at a different rate, and have different modulation characteristics
1475 * (e.g. antenna, fat channel, short guard interval), as set up in the rate
1476 * scaling table in the Link Quality command. The driver must determine
1477 * which rate table entry was used for each tx attempt, to determine which
1478 * rate-specific history to update, and record only those attempts that
1479 * match the modulation characteristics of the history set.
1481 * When using block-ack (aggregation), all frames are transmitted at the same
1482 * rate, since there is no per-attempt acknowledgement from the destination
1483 * station. The Tx response struct iwl_tx_resp indicates the Tx rate in
1484 * rate_n_flags field. After receiving a block-ack, the driver can update
1485 * history for the entire block all at once.
1488 * FINDING BEST STARTING RATE:
1490 * When working with a selected initial modulation mode (see below), the
1491 * driver attempts to find a best initial rate. The initial rate is the
1492 * first entry in the Link Quality command's rate table.
1494 * 1) Calculate actual throughput (success ratio * expected throughput, see
1495 * table below) for current initial rate. Do this only if enough frames
1496 * have been attempted to make the value meaningful: at least 6 failed
1497 * tx attempts, or at least 8 successes. If not enough, don't try rate
1500 * 2) Find available rates adjacent to current initial rate. Available means:
1501 * a) supported by hardware &&
1502 * b) supported by association &&
1503 * c) within any constraints selected by user
1505 * 3) Gather measured throughputs for adjacent rates. These might not have
1506 * enough history to calculate a throughput. That's okay, we might try
1507 * using one of them anyway!
1509 * 4) Try decreasing rate if, for current rate:
1510 * a) success ratio is < 15% ||
1511 * b) lower adjacent rate has better measured throughput ||
1512 * c) higher adjacent rate has worse throughput, and lower is unmeasured
1514 * As a sanity check, if decrease was determined above, leave rate
1516 * a) lower rate unavailable
1517 * b) success ratio at current rate > 85% (very good)
1518 * c) current measured throughput is better than expected throughput
1519 * of lower rate (under perfect 100% tx conditions, see table below)
1521 * 5) Try increasing rate if, for current rate:
1522 * a) success ratio is < 15% ||
1523 * b) both adjacent rates' throughputs are unmeasured (try it!) ||
1524 * b) higher adjacent rate has better measured throughput ||
1525 * c) lower adjacent rate has worse throughput, and higher is unmeasured
1527 * As a sanity check, if increase was determined above, leave rate
1529 * a) success ratio at current rate < 70%. This is not particularly
1530 * good performance; higher rate is sure to have poorer success.
1532 * 6) Re-evaluate the rate after each tx frame. If working with block-
1533 * acknowledge, history and statistics may be calculated for the entire
1534 * block (including prior history that fits within the history windows),
1535 * before re-evaluation.
1537 * FINDING BEST STARTING MODULATION MODE:
1539 * After working with a modulation mode for a "while" (and doing rate scaling),
1540 * the driver searches for a new initial mode in an attempt to improve
1541 * throughput. The "while" is measured by numbers of attempted frames:
1543 * For legacy mode, search for new mode after:
1544 * 480 successful frames, or 160 failed frames
1545 * For high-throughput modes (SISO or MIMO), search for new mode after:
1546 * 4500 successful frames, or 400 failed frames
1548 * Mode switch possibilities are (3 for each mode):
1551 * Change antenna, try SISO (if HT association), try MIMO (if HT association)
1553 * Change antenna, try MIMO, try shortened guard interval (SGI)
1555 * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI)
1557 * When trying a new mode, use the same bit rate as the old/current mode when
1558 * trying antenna switches and shortened guard interval. When switching to
1559 * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate
1560 * for which the expected throughput (under perfect conditions) is about the
1561 * same or slightly better than the actual measured throughput delivered by
1562 * the old/current mode.
1564 * Actual throughput can be estimated by multiplying the expected throughput
1565 * by the success ratio (successful / attempted tx frames). Frame size is
1566 * not considered in this calculation; it assumes that frame size will average
1567 * out to be fairly consistent over several samples. The following are
1568 * metric values for expected throughput assuming 100% success ratio.
1569 * Only G band has support for CCK rates:
1571 * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60
1573 * G: 7 13 35 58 40 57 72 98 121 154 177 186 186
1574 * A: 0 0 0 0 40 57 72 98 121 154 177 186 186
1575 * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202
1576 * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211
1577 * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251
1578 * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257
1579 * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257
1580 * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264
1581 * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289
1582 * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293
1584 * After the new mode has been tried for a short while (minimum of 6 failed
1585 * frames or 8 successful frames), compare success ratio and actual throughput
1586 * estimate of the new mode with the old. If either is better with the new
1587 * mode, continue to use the new mode.
1589 * Continue comparing modes until all 3 possibilities have been tried.
1590 * If moving from legacy to HT, try all 3 possibilities from the new HT
1591 * mode. After trying all 3, a best mode is found. Continue to use this mode
1592 * for the longer "while" described above (e.g. 480 successful frames for
1593 * legacy), and then repeat the search process.
1596 struct iwl4965_link_quality_cmd {
1598 /* Index of destination/recipient station in uCode's station table */
1601 __le16 control; /* not used */
1602 struct iwl4965_link_qual_general_params general_params;
1603 struct iwl4965_link_qual_agg_params agg_params;
1606 * Rate info; when using rate-scaling, Tx command's initial_rate_index
1607 * specifies 1st Tx rate attempted, via index into this table.
1608 * 4965 works its way through table when retrying Tx.
1611 __le32 rate_n_flags; /* RATE_MCS_*, IWL_RATE_* */
1612 } rs_table[LINK_QUAL_MAX_RETRY_NUM];
1614 } __attribute__ ((packed));
1617 * REPLY_BT_CONFIG = 0x9b (command, has simple generic response)
1619 struct iwl4965_bt_cmd {
1624 __le32 kill_ack_mask;
1625 __le32 kill_cts_mask;
1626 } __attribute__ ((packed));
1628 /******************************************************************************
1630 * Spectrum Management (802.11h) Commands, Responses, Notifications:
1632 *****************************************************************************/
1635 * Spectrum Management
1637 #define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \
1638 RXON_FILTER_CTL2HOST_MSK | \
1639 RXON_FILTER_ACCEPT_GRP_MSK | \
1640 RXON_FILTER_DIS_DECRYPT_MSK | \
1641 RXON_FILTER_DIS_GRP_DECRYPT_MSK | \
1642 RXON_FILTER_ASSOC_MSK | \
1643 RXON_FILTER_BCON_AWARE_MSK)
1645 struct iwl4965_measure_channel {
1646 __le32 duration; /* measurement duration in extended beacon
1648 u8 channel; /* channel to measure */
1649 u8 type; /* see enum iwl4965_measure_type */
1651 } __attribute__ ((packed));
1654 * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (command)
1656 struct iwl4965_spectrum_cmd {
1657 __le16 len; /* number of bytes starting from token */
1658 u8 token; /* token id */
1659 u8 id; /* measurement id -- 0 or 1 */
1660 u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */
1661 u8 periodic; /* 1 = periodic */
1662 __le16 path_loss_timeout;
1663 __le32 start_time; /* start time in extended beacon format */
1665 __le32 flags; /* rxon flags */
1666 __le32 filter_flags; /* rxon filter flags */
1667 __le16 channel_count; /* minimum 1, maximum 10 */
1669 struct iwl4965_measure_channel channels[10];
1670 } __attribute__ ((packed));
1673 * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (response)
1675 struct iwl4965_spectrum_resp {
1677 u8 id; /* id of the prior command replaced, or 0xff */
1678 __le16 status; /* 0 - command will be handled
1679 * 1 - cannot handle (conflicts with another
1681 } __attribute__ ((packed));
1683 enum iwl4965_measurement_state {
1684 IWL_MEASUREMENT_START = 0,
1685 IWL_MEASUREMENT_STOP = 1,
1688 enum iwl4965_measurement_status {
1689 IWL_MEASUREMENT_OK = 0,
1690 IWL_MEASUREMENT_CONCURRENT = 1,
1691 IWL_MEASUREMENT_CSA_CONFLICT = 2,
1692 IWL_MEASUREMENT_TGH_CONFLICT = 3,
1694 IWL_MEASUREMENT_STOPPED = 6,
1695 IWL_MEASUREMENT_TIMEOUT = 7,
1696 IWL_MEASUREMENT_PERIODIC_FAILED = 8,
1699 #define NUM_ELEMENTS_IN_HISTOGRAM 8
1701 struct iwl4965_measurement_histogram {
1702 __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */
1703 __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */
1704 } __attribute__ ((packed));
1706 /* clear channel availability counters */
1707 struct iwl4965_measurement_cca_counters {
1710 } __attribute__ ((packed));
1712 enum iwl4965_measure_type {
1713 IWL_MEASURE_BASIC = (1 << 0),
1714 IWL_MEASURE_CHANNEL_LOAD = (1 << 1),
1715 IWL_MEASURE_HISTOGRAM_RPI = (1 << 2),
1716 IWL_MEASURE_HISTOGRAM_NOISE = (1 << 3),
1717 IWL_MEASURE_FRAME = (1 << 4),
1718 /* bits 5:6 are reserved */
1719 IWL_MEASURE_IDLE = (1 << 7),
1723 * SPECTRUM_MEASURE_NOTIFICATION = 0x75 (notification only, not a command)
1725 struct iwl4965_spectrum_notification {
1726 u8 id; /* measurement id -- 0 or 1 */
1728 u8 channel_index; /* index in measurement channel list */
1729 u8 state; /* 0 - start, 1 - stop */
1730 __le32 start_time; /* lower 32-bits of TSF */
1731 u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */
1733 u8 type; /* see enum iwl4965_measurement_type */
1735 /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only
1736 * valid if applicable for measurement type requested. */
1737 __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */
1738 __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */
1739 __le32 cca_time; /* channel load time in usecs */
1740 u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 -
1743 struct iwl4965_measurement_histogram histogram;
1744 __le32 stop_time; /* lower 32-bits of TSF */
1745 __le32 status; /* see iwl4965_measurement_status */
1746 } __attribute__ ((packed));
1748 /******************************************************************************
1750 * Power Management Commands, Responses, Notifications:
1752 *****************************************************************************/
1755 * struct iwl4965_powertable_cmd - Power Table Command
1756 * @flags: See below:
1758 * POWER_TABLE_CMD = 0x77 (command, has simple generic response)
1761 * bit 0 - '0' Driver not allow power management
1762 * '1' Driver allow PM (use rest of parameters)
1763 * uCode send sleep notifications:
1764 * bit 1 - '0' Don't send sleep notification
1765 * '1' send sleep notification (SEND_PM_NOTIFICATION)
1767 * bit 2 - '0' PM have to walk up every DTIM
1768 * '1' PM could sleep over DTIM till listen Interval.
1770 * bit 3 - '0' (PCI_LINK_CTRL & 0x1)
1771 * '1' !(PCI_LINK_CTRL & 0x1)
1773 * bit 31/30- '00' use both mac/xtal sleeps
1774 * '01' force Mac sleep
1775 * '10' force xtal sleep
1778 * NOTE: if sleep_interval[SLEEP_INTRVL_TABLE_SIZE-1] > DTIM period then
1779 * ucode assume sleep over DTIM is allowed and we don't need to wakeup
1782 #define IWL_POWER_VEC_SIZE 5
1784 #define IWL_POWER_DRIVER_ALLOW_SLEEP_MSK __constant_cpu_to_le16(1<<0)
1785 #define IWL_POWER_SLEEP_OVER_DTIM_MSK __constant_cpu_to_le16(1<<2)
1786 #define IWL_POWER_PCI_PM_MSK __constant_cpu_to_le16(1<<3)
1788 struct iwl4965_powertable_cmd {
1790 u8 keep_alive_seconds;
1792 __le32 rx_data_timeout;
1793 __le32 tx_data_timeout;
1794 __le32 sleep_interval[IWL_POWER_VEC_SIZE];
1795 __le32 keep_alive_beacons;
1796 } __attribute__ ((packed));
1799 * PM_SLEEP_NOTIFICATION = 0x7A (notification only, not a command)
1800 * 3945 and 4965 identical.
1802 struct iwl4965_sleep_notification {
1809 } __attribute__ ((packed));
1811 /* Sleep states. 3945 and 4965 identical. */
1813 IWL_PM_NO_SLEEP = 0,
1815 IWL_PM_SLP_FULL_MAC_UNASSOCIATE = 2,
1816 IWL_PM_SLP_FULL_MAC_CARD_STATE = 3,
1818 IWL_PM_SLP_REPENT = 5,
1819 IWL_PM_WAKEUP_BY_TIMER = 6,
1820 IWL_PM_WAKEUP_BY_DRIVER = 7,
1821 IWL_PM_WAKEUP_BY_RFKILL = 8,
1823 IWL_PM_NUM_OF_MODES = 12,
1827 * REPLY_CARD_STATE_CMD = 0xa0 (command, has simple generic response)
1829 #define CARD_STATE_CMD_DISABLE 0x00 /* Put card to sleep */
1830 #define CARD_STATE_CMD_ENABLE 0x01 /* Wake up card */
1831 #define CARD_STATE_CMD_HALT 0x02 /* Power down permanently */
1832 struct iwl4965_card_state_cmd {
1833 __le32 status; /* CARD_STATE_CMD_* request new power state */
1834 } __attribute__ ((packed));
1837 * CARD_STATE_NOTIFICATION = 0xa1 (notification only, not a command)
1839 struct iwl4965_card_state_notif {
1841 } __attribute__ ((packed));
1843 #define HW_CARD_DISABLED 0x01
1844 #define SW_CARD_DISABLED 0x02
1845 #define RF_CARD_DISABLED 0x04
1846 #define RXON_CARD_DISABLED 0x10
1848 struct iwl4965_ct_kill_config {
1850 __le32 critical_temperature_M;
1851 __le32 critical_temperature_R;
1852 } __attribute__ ((packed));
1854 /******************************************************************************
1856 * Scan Commands, Responses, Notifications:
1858 *****************************************************************************/
1860 struct iwl4965_scan_channel {
1861 /* type is defined as:
1862 * 0:0 active (0 - passive)
1864 * If 1 is set then corresponding SSID IE is transmitted in probe
1869 struct iwl4965_tx_power tpc;
1870 __le16 active_dwell;
1871 __le16 passive_dwell;
1872 } __attribute__ ((packed));
1874 struct iwl4965_ssid_ie {
1878 } __attribute__ ((packed));
1880 #define PROBE_OPTION_MAX 0x4
1881 #define TX_CMD_LIFE_TIME_INFINITE __constant_cpu_to_le32(0xFFFFFFFF)
1882 #define IWL_GOOD_CRC_TH __constant_cpu_to_le16(1)
1883 #define IWL_MAX_SCAN_SIZE 1024
1886 * REPLY_SCAN_CMD = 0x80 (command)
1888 struct iwl4965_scan_cmd {
1892 __le16 quiet_time; /* dwell only this long on quiet chnl
1894 __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */
1895 __le16 good_CRC_th; /* passive -> active promotion threshold */
1897 __le32 max_out_time; /* max usec to be out of associated (service)
1899 __le32 suspend_time; /* pause scan this long when returning to svc
1901 * 3945 -- 31:24 # beacons, 19:0 additional usec,
1902 * 4965 -- 31:22 # beacons, 21:0 additional usec.
1905 __le32 filter_flags;
1907 struct iwl4965_tx_cmd tx_cmd;
1908 struct iwl4965_ssid_ie direct_scan[PROBE_OPTION_MAX];
1912 * The channels start after the probe request payload and are of type:
1914 * struct iwl4965_scan_channel channels[0];
1916 * NOTE: Only one band of channels can be scanned per pass. You
1917 * can not mix 2.4GHz channels and 5.2GHz channels and must
1918 * request a scan multiple times (not concurrently)
1921 } __attribute__ ((packed));
1923 /* Can abort will notify by complete notification with abort status. */
1924 #define CAN_ABORT_STATUS __constant_cpu_to_le32(0x1)
1925 /* complete notification statuses */
1926 #define ABORT_STATUS 0x2
1929 * REPLY_SCAN_CMD = 0x80 (response)
1931 struct iwl4965_scanreq_notification {
1932 __le32 status; /* 1: okay, 2: cannot fulfill request */
1933 } __attribute__ ((packed));
1936 * SCAN_START_NOTIFICATION = 0x82 (notification only, not a command)
1938 struct iwl4965_scanstart_notification {
1941 __le32 beacon_timer;
1946 } __attribute__ ((packed));
1948 #define SCAN_OWNER_STATUS 0x1;
1949 #define MEASURE_OWNER_STATUS 0x2;
1951 #define NUMBER_OF_STATISTICS 1 /* first __le32 is good CRC */
1953 * SCAN_RESULTS_NOTIFICATION = 0x83 (notification only, not a command)
1955 struct iwl4965_scanresults_notification {
1961 __le32 statistics[NUMBER_OF_STATISTICS];
1962 } __attribute__ ((packed));
1965 * SCAN_COMPLETE_NOTIFICATION = 0x84 (notification only, not a command)
1967 struct iwl4965_scancomplete_notification {
1968 u8 scanned_channels;
1974 } __attribute__ ((packed));
1977 /******************************************************************************
1979 * IBSS/AP Commands and Notifications:
1981 *****************************************************************************/
1984 * BEACON_NOTIFICATION = 0x90 (notification only, not a command)
1986 struct iwl4965_beacon_notif {
1987 struct iwl4965_tx_resp beacon_notify_hdr;
1990 __le32 ibss_mgr_status;
1991 } __attribute__ ((packed));
1994 * REPLY_TX_BEACON = 0x91 (command, has simple generic response)
1996 struct iwl4965_tx_beacon_cmd {
1997 struct iwl4965_tx_cmd tx;
2001 struct ieee80211_hdr frame[0]; /* beacon frame */
2002 } __attribute__ ((packed));
2004 /******************************************************************************
2006 * Statistics Commands and Notifications:
2008 *****************************************************************************/
2010 #define IWL_TEMP_CONVERT 260
2012 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
2013 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
2014 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
2016 /* Used for passing to driver number of successes and failures per rate */
2017 struct rate_histogram {
2019 __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
2020 __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
2021 __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
2024 __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
2025 __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
2026 __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
2028 } __attribute__ ((packed));
2030 /* statistics command response */
2032 struct statistics_rx_phy {
2038 __le32 early_overrun_err;
2040 __le32 false_alarm_cnt;
2041 __le32 fina_sync_err_cnt;
2043 __le32 fina_timeout;
2044 __le32 unresponded_rts;
2045 __le32 rxe_frame_limit_overrun;
2046 __le32 sent_ack_cnt;
2047 __le32 sent_cts_cnt;
2048 __le32 sent_ba_rsp_cnt;
2049 __le32 dsp_self_kill;
2050 __le32 mh_format_err;
2051 __le32 re_acq_main_rssi_sum;
2053 } __attribute__ ((packed));
2055 struct statistics_rx_ht_phy {
2058 __le32 early_overrun_err;
2061 __le32 mh_format_err;
2062 __le32 agg_crc32_good;
2063 __le32 agg_mpdu_cnt;
2066 } __attribute__ ((packed));
2068 struct statistics_rx_non_phy {
2069 __le32 bogus_cts; /* CTS received when not expecting CTS */
2070 __le32 bogus_ack; /* ACK received when not expecting ACK */
2071 __le32 non_bssid_frames; /* number of frames with BSSID that
2072 * doesn't belong to the STA BSSID */
2073 __le32 filtered_frames; /* count frames that were dumped in the
2074 * filtering process */
2075 __le32 non_channel_beacons; /* beacons with our bss id but not on
2076 * our serving channel */
2077 __le32 channel_beacons; /* beacons with our bss id and in our
2078 * serving channel */
2079 __le32 num_missed_bcon; /* number of missed beacons */
2080 __le32 adc_rx_saturation_time; /* count in 0.8us units the time the
2081 * ADC was in saturation */
2082 __le32 ina_detection_search_time;/* total time (in 0.8us) searched
2084 __le32 beacon_silence_rssi_a; /* RSSI silence after beacon frame */
2085 __le32 beacon_silence_rssi_b; /* RSSI silence after beacon frame */
2086 __le32 beacon_silence_rssi_c; /* RSSI silence after beacon frame */
2087 __le32 interference_data_flag; /* flag for interference data
2088 * availability. 1 when data is
2090 __le32 channel_load; /* counts RX Enable time */
2091 __le32 dsp_false_alarms; /* DSP false alarm (both OFDM
2092 * and CCK) counter */
2093 __le32 beacon_rssi_a;
2094 __le32 beacon_rssi_b;
2095 __le32 beacon_rssi_c;
2096 __le32 beacon_energy_a;
2097 __le32 beacon_energy_b;
2098 __le32 beacon_energy_c;
2099 } __attribute__ ((packed));
2101 struct statistics_rx {
2102 struct statistics_rx_phy ofdm;
2103 struct statistics_rx_phy cck;
2104 struct statistics_rx_non_phy general;
2105 struct statistics_rx_ht_phy ofdm_ht;
2106 } __attribute__ ((packed));
2108 struct statistics_tx_non_phy_agg {
2110 __le32 ba_reschedule_frames;
2111 __le32 scd_query_agg_frame_cnt;
2112 __le32 scd_query_no_agg;
2113 __le32 scd_query_agg;
2114 __le32 scd_query_mismatch;
2115 __le32 frame_not_ready;
2117 __le32 bt_prio_kill;
2118 __le32 rx_ba_rsp_cnt;
2121 } __attribute__ ((packed));
2123 struct statistics_tx {
2124 __le32 preamble_cnt;
2125 __le32 rx_detected_cnt;
2126 __le32 bt_prio_defer_cnt;
2127 __le32 bt_prio_kill_cnt;
2128 __le32 few_bytes_cnt;
2131 __le32 expected_ack_cnt;
2132 __le32 actual_ack_cnt;
2133 __le32 dump_msdu_cnt;
2134 __le32 burst_abort_next_frame_mismatch_cnt;
2135 __le32 burst_abort_missing_next_frame_cnt;
2136 __le32 cts_timeout_collision;
2137 __le32 ack_or_ba_timeout_collision;
2138 struct statistics_tx_non_phy_agg agg;
2139 } __attribute__ ((packed));
2141 struct statistics_dbg {
2145 } __attribute__ ((packed));
2147 struct statistics_div {
2154 } __attribute__ ((packed));
2156 struct statistics_general {
2158 __le32 temperature_m;
2159 struct statistics_dbg dbg;
2163 __le32 ttl_timestamp;
2164 struct statistics_div div;
2165 __le32 rx_enable_counter;
2169 } __attribute__ ((packed));
2172 * REPLY_STATISTICS_CMD = 0x9c,
2173 * 3945 and 4965 identical.
2175 * This command triggers an immediate response containing uCode statistics.
2176 * The response is in the same format as STATISTICS_NOTIFICATION 0x9d, below.
2178 * If the CLEAR_STATS configuration flag is set, uCode will clear its
2179 * internal copy of the statistics (counters) after issuing the response.
2180 * This flag does not affect STATISTICS_NOTIFICATIONs after beacons (see below).
2182 * If the DISABLE_NOTIF configuration flag is set, uCode will not issue
2183 * STATISTICS_NOTIFICATIONs after received beacons (see below). This flag
2184 * does not affect the response to the REPLY_STATISTICS_CMD 0x9c itself.
2186 #define IWL_STATS_CONF_CLEAR_STATS __constant_cpu_to_le32(0x1) /* see above */
2187 #define IWL_STATS_CONF_DISABLE_NOTIF __constant_cpu_to_le32(0x2)/* see above */
2188 struct iwl4965_statistics_cmd {
2189 __le32 configuration_flags; /* IWL_STATS_CONF_* */
2190 } __attribute__ ((packed));
2193 * STATISTICS_NOTIFICATION = 0x9d (notification only, not a command)
2195 * By default, uCode issues this notification after receiving a beacon
2196 * while associated. To disable this behavior, set DISABLE_NOTIF flag in the
2197 * REPLY_STATISTICS_CMD 0x9c, above.
2199 * Statistics counters continue to increment beacon after beacon, but are
2200 * cleared when changing channels or when driver issues REPLY_STATISTICS_CMD
2201 * 0x9c with CLEAR_STATS bit set (see above).
2203 * uCode also issues this notification during scans. uCode clears statistics
2204 * appropriately so that each notification contains statistics for only the
2205 * one channel that has just been scanned.
2207 #define STATISTICS_REPLY_FLG_BAND_24G_MSK __constant_cpu_to_le32(0x2)
2208 #define STATISTICS_REPLY_FLG_FAT_MODE_MSK __constant_cpu_to_le32(0x8)
2209 struct iwl4965_notif_statistics {
2211 struct statistics_rx rx;
2212 struct statistics_tx tx;
2213 struct statistics_general general;
2214 } __attribute__ ((packed));
2218 * MISSED_BEACONS_NOTIFICATION = 0xa2 (notification only, not a command)
2220 /* if ucode missed CONSECUTIVE_MISSED_BCONS_TH beacons in a row,
2221 * then this notification will be sent. */
2222 #define CONSECUTIVE_MISSED_BCONS_TH 20
2224 struct iwl4965_missed_beacon_notif {
2225 __le32 consequtive_missed_beacons;
2226 __le32 total_missed_becons;
2227 __le32 num_expected_beacons;
2228 __le32 num_recvd_beacons;
2229 } __attribute__ ((packed));
2232 /******************************************************************************
2234 * Rx Calibration Commands:
2236 * With the uCode used for open source drivers, most Tx calibration (except
2237 * for Tx Power) and most Rx calibration is done by uCode during the
2238 * "initialize" phase of uCode boot. Driver must calibrate only:
2240 * 1) Tx power (depends on temperature), described elsewhere
2241 * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas)
2242 * 3) Receiver sensitivity (to optimize signal detection)
2244 *****************************************************************************/
2247 * SENSITIVITY_CMD = 0xa8 (command, has simple generic response)
2249 * This command sets up the Rx signal detector for a sensitivity level that
2250 * is high enough to lock onto all signals within the associated network,
2251 * but low enough to ignore signals that are below a certain threshold, so as
2252 * not to have too many "false alarms". False alarms are signals that the
2253 * Rx DSP tries to lock onto, but then discards after determining that they
2256 * The optimum number of false alarms is between 5 and 50 per 200 TUs
2257 * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e.
2258 * time listening, not transmitting). Driver must adjust sensitivity so that
2259 * the ratio of actual false alarms to actual Rx time falls within this range.
2261 * While associated, uCode delivers STATISTICS_NOTIFICATIONs after each
2262 * received beacon. These provide information to the driver to analyze the
2263 * sensitivity. Don't analyze statistics that come in from scanning, or any
2264 * other non-associated-network source. Pertinent statistics include:
2266 * From "general" statistics (struct statistics_rx_non_phy):
2268 * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level)
2269 * Measure of energy of desired signal. Used for establishing a level
2270 * below which the device does not detect signals.
2272 * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB)
2273 * Measure of background noise in silent period after beacon.
2276 * uSecs of actual Rx time during beacon period (varies according to
2277 * how much time was spent transmitting).
2279 * From "cck" and "ofdm" statistics (struct statistics_rx_phy), separately:
2282 * Signal locks abandoned early (before phy-level header).
2285 * Signal locks abandoned late (during phy-level header).
2287 * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from
2288 * beacon to beacon, i.e. each value is an accumulation of all errors
2289 * before and including the latest beacon. Values will wrap around to 0
2290 * after counting up to 2^32 - 1. Driver must differentiate vs.
2291 * previous beacon's values to determine # false alarms in the current
2294 * Total number of false alarms = false_alarms + plcp_errs
2296 * For OFDM, adjust the following table entries in struct iwl_sensitivity_cmd
2297 * (notice that the start points for OFDM are at or close to settings for
2298 * maximum sensitivity):
2301 * HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX 90 / 85 / 120
2302 * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX 170 / 170 / 210
2303 * HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX 105 / 105 / 140
2304 * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX 220 / 220 / 270
2306 * If actual rate of OFDM false alarms (+ plcp_errors) is too high
2307 * (greater than 50 for each 204.8 msecs listening), reduce sensitivity
2308 * by *adding* 1 to all 4 of the table entries above, up to the max for
2309 * each entry. Conversely, if false alarm rate is too low (less than 5
2310 * for each 204.8 msecs listening), *subtract* 1 from each entry to
2311 * increase sensitivity.
2313 * For CCK sensitivity, keep track of the following:
2315 * 1). 20-beacon history of maximum background noise, indicated by
2316 * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the
2317 * 3 receivers. For any given beacon, the "silence reference" is
2318 * the maximum of last 60 samples (20 beacons * 3 receivers).
2320 * 2). 10-beacon history of strongest signal level, as indicated
2321 * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers,
2322 * i.e. the strength of the signal through the best receiver at the
2323 * moment. These measurements are "upside down", with lower values
2324 * for stronger signals, so max energy will be *minimum* value.
2326 * Then for any given beacon, the driver must determine the *weakest*
2327 * of the strongest signals; this is the minimum level that needs to be
2328 * successfully detected, when using the best receiver at the moment.
2329 * "Max cck energy" is the maximum (higher value means lower energy!)
2330 * of the last 10 minima. Once this is determined, driver must add
2331 * a little margin by adding "6" to it.
2333 * 3). Number of consecutive beacon periods with too few false alarms.
2334 * Reset this to 0 at the first beacon period that falls within the
2335 * "good" range (5 to 50 false alarms per 204.8 milliseconds rx).
2337 * Then, adjust the following CCK table entries in struct iwl_sensitivity_cmd
2338 * (notice that the start points for CCK are at maximum sensitivity):
2341 * HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX 125 / 125 / 200
2342 * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX 200 / 200 / 400
2343 * HD_MIN_ENERGY_CCK_DET_INDEX 100 / 0 / 100
2345 * If actual rate of CCK false alarms (+ plcp_errors) is too high
2346 * (greater than 50 for each 204.8 msecs listening), method for reducing
2349 * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
2352 * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is < 160,
2353 * sensitivity has been reduced a significant amount; bring it up to
2354 * a moderate 161. Otherwise, *add* 3, up to max 200.
2356 * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is > 160,
2357 * sensitivity has been reduced only a moderate or small amount;
2358 * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_INDEX,
2359 * down to min 0. Otherwise (if gain has been significantly reduced),
2360 * don't change the HD_MIN_ENERGY_CCK_DET_INDEX value.
2362 * b) Save a snapshot of the "silence reference".
2364 * If actual rate of CCK false alarms (+ plcp_errors) is too low
2365 * (less than 5 for each 204.8 msecs listening), method for increasing
2366 * sensitivity is used only if:
2368 * 1a) Previous beacon did not have too many false alarms
2369 * 1b) AND difference between previous "silence reference" and current
2370 * "silence reference" (prev - current) is 2 or more,
2371 * OR 2) 100 or more consecutive beacon periods have had rate of
2372 * less than 5 false alarms per 204.8 milliseconds rx time.
2374 * Method for increasing sensitivity:
2376 * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX,
2379 * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
2382 * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_INDEX, up to max 100.
2384 * If actual rate of CCK false alarms (+ plcp_errors) is within good range
2385 * (between 5 and 50 for each 204.8 msecs listening):
2387 * 1) Save a snapshot of the silence reference.
2389 * 2) If previous beacon had too many CCK false alarms (+ plcp_errors),
2390 * give some extra margin to energy threshold by *subtracting* 8
2391 * from value in HD_MIN_ENERGY_CCK_DET_INDEX.
2393 * For all cases (too few, too many, good range), make sure that the CCK
2394 * detection threshold (energy) is below the energy level for robust
2395 * detection over the past 10 beacon periods, the "Max cck energy".
2396 * Lower values mean higher energy; this means making sure that the value
2397 * in HD_MIN_ENERGY_CCK_DET_INDEX is at or *above* "Max cck energy".
2399 * Driver should set the following entries to fixed values:
2401 * HD_MIN_ENERGY_OFDM_DET_INDEX 100
2402 * HD_BARKER_CORR_TH_ADD_MIN_INDEX 190
2403 * HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX 390
2404 * HD_OFDM_ENERGY_TH_IN_INDEX 62
2408 * Table entries in SENSITIVITY_CMD (struct iwl4965_sensitivity_cmd)
2410 #define HD_TABLE_SIZE (11) /* number of entries */
2411 #define HD_MIN_ENERGY_CCK_DET_INDEX (0) /* table indexes */
2412 #define HD_MIN_ENERGY_OFDM_DET_INDEX (1)
2413 #define HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX (2)
2414 #define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX (3)
2415 #define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX (4)
2416 #define HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX (5)
2417 #define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX (6)
2418 #define HD_BARKER_CORR_TH_ADD_MIN_INDEX (7)
2419 #define HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX (8)
2420 #define HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX (9)
2421 #define HD_OFDM_ENERGY_TH_IN_INDEX (10)
2423 /* Control field in struct iwl4965_sensitivity_cmd */
2424 #define SENSITIVITY_CMD_CONTROL_DEFAULT_TABLE __constant_cpu_to_le16(0)
2425 #define SENSITIVITY_CMD_CONTROL_WORK_TABLE __constant_cpu_to_le16(1)
2428 * struct iwl4965_sensitivity_cmd
2429 * @control: (1) updates working table, (0) updates default table
2430 * @table: energy threshold values, use HD_* as index into table
2432 * Always use "1" in "control" to update uCode's working table and DSP.
2434 struct iwl4965_sensitivity_cmd {
2435 __le16 control; /* always use "1" */
2436 __le16 table[HD_TABLE_SIZE]; /* use HD_* as index */
2437 } __attribute__ ((packed));
2441 * REPLY_PHY_CALIBRATION_CMD = 0xb0 (command, has simple generic response)
2443 * This command sets the relative gains of 4965's 3 radio receiver chains.
2445 * After the first association, driver should accumulate signal and noise
2446 * statistics from the STATISTICS_NOTIFICATIONs that follow the first 20
2447 * beacons from the associated network (don't collect statistics that come
2448 * in from scanning, or any other non-network source).
2450 * DISCONNECTED ANTENNA:
2452 * Driver should determine which antennas are actually connected, by comparing
2453 * average beacon signal levels for the 3 Rx chains. Accumulate (add) the
2454 * following values over 20 beacons, one accumulator for each of the chains
2455 * a/b/c, from struct statistics_rx_non_phy:
2457 * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB)
2459 * Find the strongest signal from among a/b/c. Compare the other two to the
2460 * strongest. If any signal is more than 15 dB (times 20, unless you
2461 * divide the accumulated values by 20) below the strongest, the driver
2462 * considers that antenna to be disconnected, and should not try to use that
2463 * antenna/chain for Rx or Tx. If both A and B seem to be disconnected,
2464 * driver should declare the stronger one as connected, and attempt to use it
2465 * (A and B are the only 2 Tx chains!).
2470 * Driver should balance the 3 receivers (but just the ones that are connected
2471 * to antennas, see above) for gain, by comparing the average signal levels
2472 * detected during the silence after each beacon (background noise).
2473 * Accumulate (add) the following values over 20 beacons, one accumulator for
2474 * each of the chains a/b/c, from struct statistics_rx_non_phy:
2476 * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB)
2478 * Find the weakest background noise level from among a/b/c. This Rx chain
2479 * will be the reference, with 0 gain adjustment. Attenuate other channels by
2480 * finding noise difference:
2482 * (accum_noise[i] - accum_noise[reference]) / 30
2484 * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB.
2485 * For use in diff_gain_[abc] fields of struct iwl_calibration_cmd, the
2486 * driver should limit the difference results to a range of 0-3 (0-4.5 dB),
2487 * and set bit 2 to indicate "reduce gain". The value for the reference
2488 * (weakest) chain should be "0".
2490 * diff_gain_[abc] bit fields:
2491 * 2: (1) reduce gain, (0) increase gain
2492 * 1-0: amount of gain, units of 1.5 dB
2495 /* "Differential Gain" opcode used in REPLY_PHY_CALIBRATION_CMD. */
2496 #define PHY_CALIBRATE_DIFF_GAIN_CMD (7)
2498 struct iwl4965_calibration_cmd {
2499 u8 opCode; /* PHY_CALIBRATE_DIFF_GAIN_CMD (7) */
2500 u8 flags; /* not used */
2502 s8 diff_gain_a; /* see above */
2506 } __attribute__ ((packed));
2508 /******************************************************************************
2510 * Miscellaneous Commands:
2512 *****************************************************************************/
2515 * LEDs Command & Response
2516 * REPLY_LEDS_CMD = 0x48 (command, has simple generic response)
2518 * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field),
2519 * this command turns it on or off, or sets up a periodic blinking cycle.
2521 struct iwl4965_led_cmd {
2522 __le32 interval; /* "interval" in uSec */
2523 u8 id; /* 1: Activity, 2: Link, 3: Tech */
2524 u8 off; /* # intervals off while blinking;
2525 * "0", with >0 "on" value, turns LED on */
2526 u8 on; /* # intervals on while blinking;
2527 * "0", regardless of "off", turns LED off */
2529 } __attribute__ ((packed));
2531 /******************************************************************************
2533 * Union of all expected notifications/responses:
2535 *****************************************************************************/
2537 struct iwl4965_rx_packet {
2539 struct iwl4965_cmd_header hdr;
2541 struct iwl4965_alive_resp alive_frame;
2542 struct iwl4965_rx_frame rx_frame;
2543 struct iwl4965_tx_resp tx_resp;
2544 struct iwl4965_spectrum_notification spectrum_notif;
2545 struct iwl4965_csa_notification csa_notif;
2546 struct iwl4965_error_resp err_resp;
2547 struct iwl4965_card_state_notif card_state_notif;
2548 struct iwl4965_beacon_notif beacon_status;
2549 struct iwl4965_add_sta_resp add_sta;
2550 struct iwl4965_sleep_notification sleep_notif;
2551 struct iwl4965_spectrum_resp spectrum;
2552 struct iwl4965_notif_statistics stats;
2553 struct iwl4965_compressed_ba_resp compressed_ba;
2554 struct iwl4965_missed_beacon_notif missed_beacon;
2558 } __attribute__ ((packed));
2560 #define IWL_RX_FRAME_SIZE (4 + sizeof(struct iwl4965_rx_frame))
2562 #endif /* __iwl4965_commands_h__ */