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 - 2008 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 - 2008 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.
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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
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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,
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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-commands.h) only for uCode API definitions.
65 * Please use iwl-4965-hw.h for hardware-related definitions.
66 * Please use iwl-dev.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 */
92 REPLY_RATE_SCALE = 0x47, /* 3945 only */
93 REPLY_LEDS_CMD = 0x48,
94 REPLY_TX_LINK_QUALITY_CMD = 0x4e, /* 4965 only */
96 /* WiMAX coexistence */
97 COEX_PRIORITY_TABLE_CMD = 0x5a, /*5000 only */
98 COEX_MEDIUM_NOTIFICATION = 0x5b,
99 COEX_EVENT_CMD = 0x5c,
101 /* 802.11h related */
102 RADAR_NOTIFICATION = 0x70, /* not used */
103 REPLY_QUIET_CMD = 0x71, /* not used */
104 REPLY_CHANNEL_SWITCH = 0x72,
105 CHANNEL_SWITCH_NOTIFICATION = 0x73,
106 REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74,
107 SPECTRUM_MEASURE_NOTIFICATION = 0x75,
109 /* Power Management */
110 POWER_TABLE_CMD = 0x77,
111 PM_SLEEP_NOTIFICATION = 0x7A,
112 PM_DEBUG_STATISTIC_NOTIFIC = 0x7B,
114 /* Scan commands and notifications */
115 REPLY_SCAN_CMD = 0x80,
116 REPLY_SCAN_ABORT_CMD = 0x81,
117 SCAN_START_NOTIFICATION = 0x82,
118 SCAN_RESULTS_NOTIFICATION = 0x83,
119 SCAN_COMPLETE_NOTIFICATION = 0x84,
121 /* IBSS/AP commands */
122 BEACON_NOTIFICATION = 0x90,
123 REPLY_TX_BEACON = 0x91,
124 WHO_IS_AWAKE_NOTIFICATION = 0x94, /* not used */
126 /* Miscellaneous commands */
127 QUIET_NOTIFICATION = 0x96, /* not used */
128 REPLY_TX_PWR_TABLE_CMD = 0x97,
129 REPLY_TX_POWER_DBM_CMD = 0x98,
130 MEASURE_ABORT_NOTIFICATION = 0x99, /* not used */
132 /* Bluetooth device coexistance config command */
133 REPLY_BT_CONFIG = 0x9b,
136 REPLY_STATISTICS_CMD = 0x9c,
137 STATISTICS_NOTIFICATION = 0x9d,
139 /* RF-KILL commands and notifications */
140 REPLY_CARD_STATE_CMD = 0xa0,
141 CARD_STATE_NOTIFICATION = 0xa1,
143 /* Missed beacons notification */
144 MISSED_BEACONS_NOTIFICATION = 0xa2,
146 REPLY_CT_KILL_CONFIG_CMD = 0xa4,
147 SENSITIVITY_CMD = 0xa8,
148 REPLY_PHY_CALIBRATION_CMD = 0xb0,
149 REPLY_RX_PHY_CMD = 0xc0,
150 REPLY_RX_MPDU_CMD = 0xc1,
152 REPLY_COMPRESSED_BA = 0xc5,
156 /******************************************************************************
158 * Commonly used structures and definitions:
159 * Command header, rate_n_flags, txpower
161 *****************************************************************************/
163 /* iwl_cmd_header flags value */
164 #define IWL_CMD_FAILED_MSK 0x40
167 * struct iwl_cmd_header
169 * This header format appears in the beginning of each command sent from the
170 * driver, and each response/notification received from uCode.
172 struct iwl_cmd_header {
173 u8 cmd; /* Command ID: REPLY_RXON, etc. */
174 u8 flags; /* IWL_CMD_* */
176 * The driver sets up the sequence number to values of its chosing.
177 * uCode does not use this value, but passes it back to the driver
178 * when sending the response to each driver-originated command, so
179 * the driver can match the response to the command. Since the values
180 * don't get used by uCode, the driver may set up an arbitrary format.
182 * There is one exception: uCode sets bit 15 when it originates
183 * the response/notification, i.e. when the response/notification
184 * is not a direct response to a command sent by the driver. For
185 * example, uCode issues REPLY_3945_RX when it sends a received frame
186 * to the driver; it is not a direct response to any driver command.
188 * The Linux driver uses the following format:
190 * 0:7 index/position within Tx queue
191 * 8:13 Tx queue selection
192 * 14:14 driver sets this to indicate command is in the 'huge'
193 * storage at the end of the command buffers, i.e. scan cmd
194 * 15:15 uCode sets this in uCode-originated response/notification
198 /* command or response/notification data follows immediately */
200 } __attribute__ ((packed));
203 * 4965 rate_n_flags bit fields
205 * rate_n_flags format is used in following 4965 commands:
206 * REPLY_RX (response only)
207 * REPLY_TX (both command and response)
208 * REPLY_TX_LINK_QUALITY_CMD
210 * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"):
220 * 3: 0) Single stream (SISO)
221 * 1) Dual stream (MIMO)
223 * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps FAT duplicate data
225 * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"):
235 * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"):
241 #define RATE_MCS_CODE_MSK 0x7
242 #define RATE_MCS_MIMO_POS 3
243 #define RATE_MCS_MIMO_MSK 0x8
244 #define RATE_MCS_HT_DUP_POS 5
245 #define RATE_MCS_HT_DUP_MSK 0x20
247 /* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */
248 #define RATE_MCS_FLAGS_POS 8
249 #define RATE_MCS_HT_POS 8
250 #define RATE_MCS_HT_MSK 0x100
252 /* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
253 #define RATE_MCS_CCK_POS 9
254 #define RATE_MCS_CCK_MSK 0x200
256 /* Bit 10: (1) Use Green Field preamble */
257 #define RATE_MCS_GF_POS 10
258 #define RATE_MCS_GF_MSK 0x400
260 /* Bit 11: (1) Use 40Mhz FAT chnl width, (0) use 20 MHz legacy chnl width */
261 #define RATE_MCS_FAT_POS 11
262 #define RATE_MCS_FAT_MSK 0x800
264 /* Bit 12: (1) Duplicate data on both 20MHz chnls. FAT (bit 11) must be set. */
265 #define RATE_MCS_DUP_POS 12
266 #define RATE_MCS_DUP_MSK 0x1000
268 /* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
269 #define RATE_MCS_SGI_POS 13
270 #define RATE_MCS_SGI_MSK 0x2000
273 * rate_n_flags Tx antenna masks (4965 has 2 transmitters):
274 * bit14:15 01 B inactive, A active
275 * 10 B active, A inactive
278 #define RATE_MCS_ANT_POS 14
279 #define RATE_MCS_ANT_A_MSK 0x04000
280 #define RATE_MCS_ANT_B_MSK 0x08000
281 #define RATE_MCS_ANT_C_MSK 0x10000
282 #define RATE_MCS_ANT_ABC_MSK 0x1C000
284 #define RATE_MCS_ANT_INIT_IND 1
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 * Commad REPLY_TX_POWER_DBM_CMD = 0x98
336 * struct iwl5000_tx_power_dbm_cmd
338 #define IWL50_TX_POWER_AUTO 0x7f
339 #define IWL50_TX_POWER_NO_CLOSED (0x1 << 6)
341 struct iwl5000_tx_power_dbm_cmd {
342 s8 global_lmt; /*in half-dBm (e.g. 30 = 15 dBm) */
344 s8 srv_chan_lmt; /*in half-dBm (e.g. 30 = 15 dBm) */
346 } __attribute__ ((packed));
348 /******************************************************************************
350 * Alive and Error Commands & Responses:
352 *****************************************************************************/
354 #define UCODE_VALID_OK __constant_cpu_to_le32(0x1)
355 #define INITIALIZE_SUBTYPE (9)
358 * ("Initialize") REPLY_ALIVE = 0x1 (response only, not a command)
360 * uCode issues this "initialize alive" notification once the initialization
361 * uCode image has completed its work, and is ready to load the runtime image.
362 * This is the *first* "alive" notification that the driver will receive after
363 * rebooting uCode; the "initialize" alive is indicated by subtype field == 9.
365 * See comments documenting "BSM" (bootstrap state machine).
367 * For 4965, this notification contains important calibration data for
368 * calculating txpower settings:
370 * 1) Power supply voltage indication. The voltage sensor outputs higher
371 * values for lower voltage, and vice versa.
373 * 2) Temperature measurement parameters, for each of two channel widths
374 * (20 MHz and 40 MHz) supported by the radios. Temperature sensing
375 * is done via one of the receiver chains, and channel width influences
378 * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation,
379 * for each of 5 frequency ranges.
381 struct iwl_init_alive_resp {
387 u8 ver_subtype; /* "9" for initialize alive */
389 __le32 log_event_table_ptr;
390 __le32 error_event_table_ptr;
394 /* calibration values from "initialize" uCode */
395 __le32 voltage; /* signed, higher value is lower voltage */
396 __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for FAT channel*/
397 __le32 therm_r2[2]; /* signed */
398 __le32 therm_r3[2]; /* signed */
399 __le32 therm_r4[2]; /* signed */
400 __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups,
402 } __attribute__ ((packed));
406 * REPLY_ALIVE = 0x1 (response only, not a command)
408 * uCode issues this "alive" notification once the runtime image is ready
409 * to receive commands from the driver. This is the *second* "alive"
410 * notification that the driver will receive after rebooting uCode;
411 * this "alive" is indicated by subtype field != 9.
413 * See comments documenting "BSM" (bootstrap state machine).
415 * This response includes two pointers to structures within the device's
416 * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging:
418 * 1) log_event_table_ptr indicates base of the event log. This traces
419 * a 256-entry history of uCode execution within a circular buffer.
420 * Its header format is:
422 * __le32 log_size; log capacity (in number of entries)
423 * __le32 type; (1) timestamp with each entry, (0) no timestamp
424 * __le32 wraps; # times uCode has wrapped to top of circular buffer
425 * __le32 write_index; next circular buffer entry that uCode would fill
427 * The header is followed by the circular buffer of log entries. Entries
428 * with timestamps have the following format:
430 * __le32 event_id; range 0 - 1500
431 * __le32 timestamp; low 32 bits of TSF (of network, if associated)
432 * __le32 data; event_id-specific data value
434 * Entries without timestamps contain only event_id and data.
436 * 2) error_event_table_ptr indicates base of the error log. This contains
437 * information about any uCode error that occurs. For 4965, the format
438 * of the error log is:
440 * __le32 valid; (nonzero) valid, (0) log is empty
441 * __le32 error_id; type of error
442 * __le32 pc; program counter
443 * __le32 blink1; branch link
444 * __le32 blink2; branch link
445 * __le32 ilink1; interrupt link
446 * __le32 ilink2; interrupt link
447 * __le32 data1; error-specific data
448 * __le32 data2; error-specific data
449 * __le32 line; source code line of error
450 * __le32 bcon_time; beacon timer
451 * __le32 tsf_low; network timestamp function timer
452 * __le32 tsf_hi; network timestamp function timer
454 * The Linux driver can print both logs to the system log when a uCode error
457 struct iwl_alive_resp {
463 u8 ver_subtype; /* not "9" for runtime alive */
465 __le32 log_event_table_ptr; /* SRAM address for event log */
466 __le32 error_event_table_ptr; /* SRAM address for error log */
469 } __attribute__ ((packed));
479 * REPLY_ERROR = 0x2 (response only, not a command)
481 struct iwl_error_resp {
485 __le16 bad_cmd_seq_num;
488 } __attribute__ ((packed));
490 /******************************************************************************
492 * RXON Commands & Responses:
494 *****************************************************************************/
497 * Rx config defines & structure
499 /* rx_config device types */
501 RXON_DEV_TYPE_AP = 1,
502 RXON_DEV_TYPE_ESS = 3,
503 RXON_DEV_TYPE_IBSS = 4,
504 RXON_DEV_TYPE_SNIFFER = 6,
508 #define RXON_RX_CHAIN_DRIVER_FORCE_MSK __constant_cpu_to_le16(0x1 << 0)
509 #define RXON_RX_CHAIN_VALID_MSK __constant_cpu_to_le16(0x7 << 1)
510 #define RXON_RX_CHAIN_VALID_POS (1)
511 #define RXON_RX_CHAIN_FORCE_SEL_MSK __constant_cpu_to_le16(0x7 << 4)
512 #define RXON_RX_CHAIN_FORCE_SEL_POS (4)
513 #define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK __constant_cpu_to_le16(0x7 << 7)
514 #define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7)
515 #define RXON_RX_CHAIN_CNT_MSK __constant_cpu_to_le16(0x3 << 10)
516 #define RXON_RX_CHAIN_CNT_POS (10)
517 #define RXON_RX_CHAIN_MIMO_CNT_MSK __constant_cpu_to_le16(0x3 << 12)
518 #define RXON_RX_CHAIN_MIMO_CNT_POS (12)
519 #define RXON_RX_CHAIN_MIMO_FORCE_MSK __constant_cpu_to_le16(0x1 << 14)
520 #define RXON_RX_CHAIN_MIMO_FORCE_POS (14)
522 /* rx_config flags */
523 /* band & modulation selection */
524 #define RXON_FLG_BAND_24G_MSK __constant_cpu_to_le32(1 << 0)
525 #define RXON_FLG_CCK_MSK __constant_cpu_to_le32(1 << 1)
526 /* auto detection enable */
527 #define RXON_FLG_AUTO_DETECT_MSK __constant_cpu_to_le32(1 << 2)
528 /* TGg protection when tx */
529 #define RXON_FLG_TGG_PROTECT_MSK __constant_cpu_to_le32(1 << 3)
530 /* cck short slot & preamble */
531 #define RXON_FLG_SHORT_SLOT_MSK __constant_cpu_to_le32(1 << 4)
532 #define RXON_FLG_SHORT_PREAMBLE_MSK __constant_cpu_to_le32(1 << 5)
533 /* antenna selection */
534 #define RXON_FLG_DIS_DIV_MSK __constant_cpu_to_le32(1 << 7)
535 #define RXON_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0x0f00)
536 #define RXON_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
537 #define RXON_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
538 /* radar detection enable */
539 #define RXON_FLG_RADAR_DETECT_MSK __constant_cpu_to_le32(1 << 12)
540 #define RXON_FLG_TGJ_NARROW_BAND_MSK __constant_cpu_to_le32(1 << 13)
541 /* rx response to host with 8-byte TSF
542 * (according to ON_AIR deassertion) */
543 #define RXON_FLG_TSF2HOST_MSK __constant_cpu_to_le32(1 << 15)
547 #define RXON_FLG_CTRL_CHANNEL_LOC_POS (22)
548 #define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK __constant_cpu_to_le32(0x1 << 22)
550 #define RXON_FLG_HT_OPERATING_MODE_POS (23)
552 #define RXON_FLG_HT_PROT_MSK __constant_cpu_to_le32(0x1 << 23)
553 #define RXON_FLG_FAT_PROT_MSK __constant_cpu_to_le32(0x2 << 23)
555 #define RXON_FLG_CHANNEL_MODE_POS (25)
556 #define RXON_FLG_CHANNEL_MODE_MSK __constant_cpu_to_le32(0x3 << 25)
557 #define RXON_FLG_CHANNEL_MODE_PURE_40_MSK __constant_cpu_to_le32(0x1 << 25)
558 #define RXON_FLG_CHANNEL_MODE_MIXED_MSK __constant_cpu_to_le32(0x2 << 25)
559 /* CTS to self (if spec allows) flag */
560 #define RXON_FLG_SELF_CTS_EN __constant_cpu_to_le32(0x1<<30)
562 /* rx_config filter flags */
563 /* accept all data frames */
564 #define RXON_FILTER_PROMISC_MSK __constant_cpu_to_le32(1 << 0)
565 /* pass control & management to host */
566 #define RXON_FILTER_CTL2HOST_MSK __constant_cpu_to_le32(1 << 1)
567 /* accept multi-cast */
568 #define RXON_FILTER_ACCEPT_GRP_MSK __constant_cpu_to_le32(1 << 2)
569 /* don't decrypt uni-cast frames */
570 #define RXON_FILTER_DIS_DECRYPT_MSK __constant_cpu_to_le32(1 << 3)
571 /* don't decrypt multi-cast frames */
572 #define RXON_FILTER_DIS_GRP_DECRYPT_MSK __constant_cpu_to_le32(1 << 4)
573 /* STA is associated */
574 #define RXON_FILTER_ASSOC_MSK __constant_cpu_to_le32(1 << 5)
575 /* transfer to host non bssid beacons in associated state */
576 #define RXON_FILTER_BCON_AWARE_MSK __constant_cpu_to_le32(1 << 6)
579 * REPLY_RXON = 0x10 (command, has simple generic response)
581 * RXON tunes the radio tuner to a service channel, and sets up a number
582 * of parameters that are used primarily for Rx, but also for Tx operations.
584 * NOTE: When tuning to a new channel, driver must set the
585 * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent
586 * info within the device, including the station tables, tx retry
587 * rate tables, and txpower tables. Driver must build a new station
588 * table and txpower table before transmitting anything on the RXON
591 * NOTE: All RXONs wipe clean the internal txpower table. Driver must
592 * issue a new REPLY_TX_PWR_TABLE_CMD after each REPLY_RXON (0x10),
593 * regardless of whether RXON_FILTER_ASSOC_MSK is set.
595 struct iwl4965_rxon_cmd {
600 u8 wlap_bssid_addr[6];
611 u8 ofdm_ht_single_stream_basic_rates;
612 u8 ofdm_ht_dual_stream_basic_rates;
613 } __attribute__ ((packed));
615 /* 5000 HW just extend this cmmand */
616 struct iwl_rxon_cmd {
621 u8 wlap_bssid_addr[6];
632 u8 ofdm_ht_single_stream_basic_rates;
633 u8 ofdm_ht_dual_stream_basic_rates;
634 u8 ofdm_ht_triple_stream_basic_rates;
636 __le16 acquisition_data;
638 } __attribute__ ((packed));
640 struct iwl5000_rxon_assoc_cmd {
646 u8 ofdm_ht_single_stream_basic_rates;
647 u8 ofdm_ht_dual_stream_basic_rates;
648 u8 ofdm_ht_triple_stream_basic_rates;
650 __le16 rx_chain_select_flags;
651 __le16 acquisition_data;
653 } __attribute__ ((packed));
656 * REPLY_RXON_ASSOC = 0x11 (command, has simple generic response)
658 struct iwl4965_rxon_assoc_cmd {
663 u8 ofdm_ht_single_stream_basic_rates;
664 u8 ofdm_ht_dual_stream_basic_rates;
665 __le16 rx_chain_select_flags;
667 } __attribute__ ((packed));
669 #define IWL_CONN_MAX_LISTEN_INTERVAL 10
672 * REPLY_RXON_TIMING = 0x14 (command, has simple generic response)
674 struct iwl4965_rxon_time_cmd {
676 __le16 beacon_interval;
678 __le32 beacon_init_val;
679 __le16 listen_interval;
681 } __attribute__ ((packed));
684 * REPLY_CHANNEL_SWITCH = 0x72 (command, has simple generic response)
686 struct iwl4965_channel_switch_cmd {
691 __le32 rxon_filter_flags;
693 struct iwl4965_tx_power_db tx_power;
694 } __attribute__ ((packed));
697 * CHANNEL_SWITCH_NOTIFICATION = 0x73 (notification only, not a command)
699 struct iwl4965_csa_notification {
702 __le32 status; /* 0 - OK, 1 - fail */
703 } __attribute__ ((packed));
705 /******************************************************************************
707 * Quality-of-Service (QOS) Commands & Responses:
709 *****************************************************************************/
712 * struct iwl_ac_qos -- QOS timing params for REPLY_QOS_PARAM
713 * One for each of 4 EDCA access categories in struct iwl_qosparam_cmd
715 * @cw_min: Contention window, start value in numbers of slots.
716 * Should be a power-of-2, minus 1. Device's default is 0x0f.
717 * @cw_max: Contention window, max value in numbers of slots.
718 * Should be a power-of-2, minus 1. Device's default is 0x3f.
719 * @aifsn: Number of slots in Arbitration Interframe Space (before
720 * performing random backoff timing prior to Tx). Device default 1.
721 * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0.
723 * Device will automatically increase contention window by (2*CW) + 1 for each
724 * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW
725 * value, to cap the CW value.
733 } __attribute__ ((packed));
735 /* QoS flags defines */
736 #define QOS_PARAM_FLG_UPDATE_EDCA_MSK __constant_cpu_to_le32(0x01)
737 #define QOS_PARAM_FLG_TGN_MSK __constant_cpu_to_le32(0x02)
738 #define QOS_PARAM_FLG_TXOP_TYPE_MSK __constant_cpu_to_le32(0x10)
740 /* Number of Access Categories (AC) (EDCA), queues 0..3 */
744 * REPLY_QOS_PARAM = 0x13 (command, has simple generic response)
746 * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs
747 * 0: Background, 1: Best Effort, 2: Video, 3: Voice.
749 struct iwl_qosparam_cmd {
751 struct iwl_ac_qos ac[AC_NUM];
752 } __attribute__ ((packed));
754 /******************************************************************************
756 * Add/Modify Stations Commands & Responses:
758 *****************************************************************************/
760 * Multi station support
763 /* Special, dedicated locations within device's station table */
765 #define IWL_MULTICAST_ID 1
767 #define IWL4965_BROADCAST_ID 31
768 #define IWL4965_STATION_COUNT 32
769 #define IWL5000_BROADCAST_ID 15
770 #define IWL5000_STATION_COUNT 16
772 #define IWL_STATION_COUNT 32 /* MAX(3945,4965)*/
773 #define IWL_INVALID_STATION 255
775 #define STA_FLG_PWR_SAVE_MSK __constant_cpu_to_le32(1 << 8);
776 #define STA_FLG_RTS_MIMO_PROT_MSK __constant_cpu_to_le32(1 << 17)
777 #define STA_FLG_AGG_MPDU_8US_MSK __constant_cpu_to_le32(1 << 18)
778 #define STA_FLG_MAX_AGG_SIZE_POS (19)
779 #define STA_FLG_MAX_AGG_SIZE_MSK __constant_cpu_to_le32(3 << 19)
780 #define STA_FLG_FAT_EN_MSK __constant_cpu_to_le32(1 << 21)
781 #define STA_FLG_MIMO_DIS_MSK __constant_cpu_to_le32(1 << 22)
782 #define STA_FLG_AGG_MPDU_DENSITY_POS (23)
783 #define STA_FLG_AGG_MPDU_DENSITY_MSK __constant_cpu_to_le32(7 << 23)
785 /* Use in mode field. 1: modify existing entry, 0: add new station entry */
786 #define STA_CONTROL_MODIFY_MSK 0x01
788 /* key flags __le16*/
789 #define STA_KEY_FLG_ENCRYPT_MSK __constant_cpu_to_le16(0x0007)
790 #define STA_KEY_FLG_NO_ENC __constant_cpu_to_le16(0x0000)
791 #define STA_KEY_FLG_WEP __constant_cpu_to_le16(0x0001)
792 #define STA_KEY_FLG_CCMP __constant_cpu_to_le16(0x0002)
793 #define STA_KEY_FLG_TKIP __constant_cpu_to_le16(0x0003)
795 #define STA_KEY_FLG_KEYID_POS 8
796 #define STA_KEY_FLG_INVALID __constant_cpu_to_le16(0x0800)
797 /* wep key is either from global key (0) or from station info array (1) */
798 #define STA_KEY_FLG_MAP_KEY_MSK __constant_cpu_to_le16(0x0008)
800 /* wep key in STA: 5-bytes (0) or 13-bytes (1) */
801 #define STA_KEY_FLG_KEY_SIZE_MSK __constant_cpu_to_le16(0x1000)
802 #define STA_KEY_MULTICAST_MSK __constant_cpu_to_le16(0x4000)
803 #define STA_KEY_MAX_NUM 8
805 /* Flags indicate whether to modify vs. don't change various station params */
806 #define STA_MODIFY_KEY_MASK 0x01
807 #define STA_MODIFY_TID_DISABLE_TX 0x02
808 #define STA_MODIFY_TX_RATE_MSK 0x04
809 #define STA_MODIFY_ADDBA_TID_MSK 0x08
810 #define STA_MODIFY_DELBA_TID_MSK 0x10
812 /* Receiver address (actually, Rx station's index into station table),
813 * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */
814 #define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
816 struct iwl4965_keyinfo {
818 u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
820 __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */
823 u8 key[16]; /* 16-byte unicast decryption key */
824 } __attribute__ ((packed));
829 u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
831 __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */
834 u8 key[16]; /* 16-byte unicast decryption key */
835 __le64 tx_secur_seq_cnt;
836 __le64 hw_tkip_mic_rx_key;
837 __le64 hw_tkip_mic_tx_key;
838 } __attribute__ ((packed));
841 * struct sta_id_modify
842 * @addr[ETH_ALEN]: station's MAC address
843 * @sta_id: index of station in uCode's station table
844 * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change
846 * Driver selects unused table index when adding new station,
847 * or the index to a pre-existing station entry when modifying that station.
848 * Some indexes have special purposes (IWL_AP_ID, index 0, is for AP).
850 * modify_mask flags select which parameters to modify vs. leave alone.
852 struct sta_id_modify {
858 } __attribute__ ((packed));
861 * REPLY_ADD_STA = 0x18 (command)
863 * The device contains an internal table of per-station information,
864 * with info on security keys, aggregation parameters, and Tx rates for
865 * initial Tx attempt and any retries (4965 uses REPLY_TX_LINK_QUALITY_CMD,
866 * 3945 uses REPLY_RATE_SCALE to set up rate tables).
868 * REPLY_ADD_STA sets up the table entry for one station, either creating
869 * a new entry, or modifying a pre-existing one.
871 * NOTE: RXON command (without "associated" bit set) wipes the station table
872 * clean. Moving into RF_KILL state does this also. Driver must set up
873 * new station table before transmitting anything on the RXON channel
874 * (except active scans or active measurements; those commands carry
875 * their own txpower/rate setup data).
877 * When getting started on a new channel, driver must set up the
878 * IWL_BROADCAST_ID entry (last entry in the table). For a client
879 * station in a BSS, once an AP is selected, driver sets up the AP STA
880 * in the IWL_AP_ID entry (1st entry in the table). BROADCAST and AP
881 * are all that are needed for a BSS client station. If the device is
882 * used as AP, or in an IBSS network, driver must set up station table
883 * entries for all STAs in network, starting with index IWL_STA_ID.
885 struct iwl4965_addsta_cmd {
886 u8 mode; /* 1: modify existing, 0: add new station */
888 struct sta_id_modify sta;
889 struct iwl4965_keyinfo key;
890 __le32 station_flags; /* STA_FLG_* */
891 __le32 station_flags_msk; /* STA_FLG_* */
893 /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID)
894 * corresponding to bit (e.g. bit 5 controls TID 5).
895 * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */
896 __le16 tid_disable_tx;
900 /* TID for which to add block-ack support.
901 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
902 u8 add_immediate_ba_tid;
904 /* TID for which to remove block-ack support.
905 * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */
906 u8 remove_immediate_ba_tid;
908 /* Starting Sequence Number for added block-ack support.
909 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
910 __le16 add_immediate_ba_ssn;
913 } __attribute__ ((packed));
916 struct iwl_addsta_cmd {
917 u8 mode; /* 1: modify existing, 0: add new station */
919 struct sta_id_modify sta;
920 struct iwl_keyinfo key;
921 __le32 station_flags; /* STA_FLG_* */
922 __le32 station_flags_msk; /* STA_FLG_* */
924 /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID)
925 * corresponding to bit (e.g. bit 5 controls TID 5).
926 * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */
927 __le16 tid_disable_tx;
931 /* TID for which to add block-ack support.
932 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
933 u8 add_immediate_ba_tid;
935 /* TID for which to remove block-ack support.
936 * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */
937 u8 remove_immediate_ba_tid;
939 /* Starting Sequence Number for added block-ack support.
940 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
941 __le16 add_immediate_ba_ssn;
944 } __attribute__ ((packed));
947 #define ADD_STA_SUCCESS_MSK 0x1
948 #define ADD_STA_NO_ROOM_IN_TABLE 0x2
949 #define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4
950 #define ADD_STA_MODIFY_NON_EXIST_STA 0x8
952 * REPLY_ADD_STA = 0x18 (response)
954 struct iwl_add_sta_resp {
955 u8 status; /* ADD_STA_* */
956 } __attribute__ ((packed));
958 #define REM_STA_SUCCESS_MSK 0x1
960 * REPLY_REM_STA = 0x19 (response)
962 struct iwl_rem_sta_resp {
964 } __attribute__ ((packed));
967 * REPLY_REM_STA = 0x19 (command)
969 struct iwl_rem_sta_cmd {
970 u8 num_sta; /* number of removed stations */
972 u8 addr[ETH_ALEN]; /* MAC addr of the first station */
974 } __attribute__ ((packed));
977 * REPLY_WEP_KEY = 0x20
986 } __attribute__ ((packed));
993 struct iwl_wep_key key[0];
994 } __attribute__ ((packed));
996 #define WEP_KEY_WEP_TYPE 1
997 #define WEP_KEYS_MAX 4
998 #define WEP_INVALID_OFFSET 0xff
999 #define WEP_KEY_LEN_64 5
1000 #define WEP_KEY_LEN_128 13
1002 /******************************************************************************
1006 *****************************************************************************/
1008 struct iwl4965_rx_frame_stats {
1016 } __attribute__ ((packed));
1018 struct iwl4965_rx_frame_hdr {
1025 } __attribute__ ((packed));
1027 #define RX_RES_STATUS_NO_CRC32_ERROR __constant_cpu_to_le32(1 << 0)
1028 #define RX_RES_STATUS_NO_RXE_OVERFLOW __constant_cpu_to_le32(1 << 1)
1030 #define RX_RES_PHY_FLAGS_BAND_24_MSK __constant_cpu_to_le16(1 << 0)
1031 #define RX_RES_PHY_FLAGS_MOD_CCK_MSK __constant_cpu_to_le16(1 << 1)
1032 #define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK __constant_cpu_to_le16(1 << 2)
1033 #define RX_RES_PHY_FLAGS_NARROW_BAND_MSK __constant_cpu_to_le16(1 << 3)
1034 #define RX_RES_PHY_FLAGS_ANTENNA_MSK __constant_cpu_to_le16(0xf0)
1036 #define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8)
1037 #define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8)
1038 #define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8)
1039 #define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8)
1040 #define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8)
1041 #define RX_RES_STATUS_SEC_TYPE_ERR (0x7 << 8)
1043 #define RX_RES_STATUS_STATION_FOUND (1<<6)
1044 #define RX_RES_STATUS_NO_STATION_INFO_MISMATCH (1<<7)
1046 #define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11)
1047 #define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11)
1048 #define RX_RES_STATUS_DECRYPT_OK (0x3 << 11)
1049 #define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11)
1050 #define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11)
1052 #define RX_MPDU_RES_STATUS_ICV_OK (0x20)
1053 #define RX_MPDU_RES_STATUS_MIC_OK (0x40)
1054 #define RX_MPDU_RES_STATUS_TTAK_OK (1 << 7)
1055 #define RX_MPDU_RES_STATUS_DEC_DONE_MSK (0x800)
1057 struct iwl4965_rx_frame_end {
1060 __le32 beacon_timestamp;
1061 } __attribute__ ((packed));
1064 * REPLY_3945_RX = 0x1b (response only, not a command)
1066 * NOTE: DO NOT dereference from casts to this structure
1067 * It is provided only for calculating minimum data set size.
1068 * The actual offsets of the hdr and end are dynamic based on
1071 struct iwl4965_rx_frame {
1072 struct iwl4965_rx_frame_stats stats;
1073 struct iwl4965_rx_frame_hdr hdr;
1074 struct iwl4965_rx_frame_end end;
1075 } __attribute__ ((packed));
1077 /* Fixed (non-configurable) rx data from phy */
1079 #define IWL49_RX_RES_PHY_CNT 14
1080 #define IWL49_RX_PHY_FLAGS_ANTENNAE_OFFSET (4)
1081 #define IWL49_RX_PHY_FLAGS_ANTENNAE_MASK (0x70)
1082 #define IWL49_AGC_DB_MASK (0x3f80) /* MASK(7,13) */
1083 #define IWL49_AGC_DB_POS (7)
1084 struct iwl4965_rx_non_cfg_phy {
1085 __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */
1086 __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */
1087 u8 rssi_info[6]; /* we use even entries, 0/2/4 for A/B/C rssi */
1089 } __attribute__ ((packed));
1092 #define IWL50_RX_RES_PHY_CNT 8
1093 #define IWL50_RX_RES_AGC_IDX 1
1094 #define IWL50_RX_RES_RSSI_AB_IDX 2
1095 #define IWL50_RX_RES_RSSI_C_IDX 3
1096 #define IWL50_OFDM_AGC_MSK 0xfe00
1097 #define IWL50_OFDM_AGC_BIT_POS 9
1098 #define IWL50_OFDM_RSSI_A_MSK 0x00ff
1099 #define IWL50_OFDM_RSSI_A_BIT_POS 0
1100 #define IWL50_OFDM_RSSI_B_MSK 0xff0000
1101 #define IWL50_OFDM_RSSI_B_BIT_POS 16
1102 #define IWL50_OFDM_RSSI_C_MSK 0x00ff
1103 #define IWL50_OFDM_RSSI_C_BIT_POS 0
1105 struct iwl5000_non_cfg_phy {
1106 __le32 non_cfg_phy[IWL50_RX_RES_PHY_CNT]; /* upto 8 phy entries */
1107 } __attribute__ ((packed));
1111 * REPLY_RX = 0xc3 (response only, not a command)
1112 * Used only for legacy (non 11n) frames.
1114 struct iwl_rx_phy_res {
1115 u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */
1116 u8 cfg_phy_cnt; /* configurable DSP phy data byte count */
1117 u8 stat_id; /* configurable DSP phy data set ID */
1119 __le64 timestamp; /* TSF at on air rise */
1120 __le32 beacon_time_stamp; /* beacon at on-air rise */
1121 __le16 phy_flags; /* general phy flags: band, modulation, ... */
1122 __le16 channel; /* channel number */
1123 u8 non_cfg_phy_buf[32]; /* for various implementations of non_cfg_phy */
1124 __le32 rate_n_flags; /* RATE_MCS_* */
1125 __le16 byte_count; /* frame's byte-count */
1127 } __attribute__ ((packed));
1129 struct iwl4965_rx_mpdu_res_start {
1132 } __attribute__ ((packed));
1135 /******************************************************************************
1137 * Tx Commands & Responses:
1139 * Driver must place each REPLY_TX command into one of the prioritized Tx
1140 * queues in host DRAM, shared between driver and device (see comments for
1141 * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode
1142 * are preparing to transmit, the device pulls the Tx command over the PCI
1143 * bus via one of the device's Tx DMA channels, to fill an internal FIFO
1144 * from which data will be transmitted.
1146 * uCode handles all timing and protocol related to control frames
1147 * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler
1148 * handle reception of block-acks; uCode updates the host driver via
1149 * REPLY_COMPRESSED_BA (4965).
1151 * uCode handles retrying Tx when an ACK is expected but not received.
1152 * This includes trying lower data rates than the one requested in the Tx
1153 * command, as set up by the REPLY_RATE_SCALE (for 3945) or
1154 * REPLY_TX_LINK_QUALITY_CMD (4965).
1156 * Driver sets up transmit power for various rates via REPLY_TX_PWR_TABLE_CMD.
1157 * This command must be executed after every RXON command, before Tx can occur.
1158 *****************************************************************************/
1160 /* REPLY_TX Tx flags field */
1162 /* 1: Use RTS/CTS protocol or CTS-to-self if spec alows it
1163 * before this frame. if CTS-to-self required check
1164 * RXON_FLG_SELF_CTS_EN status. */
1165 #define TX_CMD_FLG_RTS_CTS_MSK __constant_cpu_to_le32(1 << 0)
1167 /* 1: Use Request-To-Send protocol before this frame.
1168 * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. */
1169 #define TX_CMD_FLG_RTS_MSK __constant_cpu_to_le32(1 << 1)
1171 /* 1: Transmit Clear-To-Send to self before this frame.
1172 * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames.
1173 * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. */
1174 #define TX_CMD_FLG_CTS_MSK __constant_cpu_to_le32(1 << 2)
1176 /* 1: Expect ACK from receiving station
1177 * 0: Don't expect ACK (MAC header's duration field s/b 0)
1178 * Set this for unicast frames, but not broadcast/multicast. */
1179 #define TX_CMD_FLG_ACK_MSK __constant_cpu_to_le32(1 << 3)
1182 * 1: Use rate scale table (see REPLY_TX_LINK_QUALITY_CMD).
1183 * Tx command's initial_rate_index indicates first rate to try;
1184 * uCode walks through table for additional Tx attempts.
1185 * 0: Use Tx rate/MCS from Tx command's rate_n_flags field.
1186 * This rate will be used for all Tx attempts; it will not be scaled. */
1187 #define TX_CMD_FLG_STA_RATE_MSK __constant_cpu_to_le32(1 << 4)
1189 /* 1: Expect immediate block-ack.
1190 * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */
1191 #define TX_CMD_FLG_IMM_BA_RSP_MASK __constant_cpu_to_le32(1 << 6)
1193 /* 1: Frame requires full Tx-Op protection.
1194 * Set this if either RTS or CTS Tx Flag gets set. */
1195 #define TX_CMD_FLG_FULL_TXOP_PROT_MSK __constant_cpu_to_le32(1 << 7)
1197 /* Tx antenna selection field; used only for 3945, reserved (0) for 4965.
1198 * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */
1199 #define TX_CMD_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0xf00)
1200 #define TX_CMD_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
1201 #define TX_CMD_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
1203 /* 1: Ignore Bluetooth priority for this frame.
1204 * 0: Delay Tx until Bluetooth device is done (normal usage). */
1205 #define TX_CMD_FLG_BT_DIS_MSK __constant_cpu_to_le32(1 << 12)
1207 /* 1: uCode overrides sequence control field in MAC header.
1208 * 0: Driver provides sequence control field in MAC header.
1209 * Set this for management frames, non-QOS data frames, non-unicast frames,
1210 * and also in Tx command embedded in REPLY_SCAN_CMD for active scans. */
1211 #define TX_CMD_FLG_SEQ_CTL_MSK __constant_cpu_to_le32(1 << 13)
1213 /* 1: This frame is non-last MPDU; more fragments are coming.
1214 * 0: Last fragment, or not using fragmentation. */
1215 #define TX_CMD_FLG_MORE_FRAG_MSK __constant_cpu_to_le32(1 << 14)
1217 /* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame.
1218 * 0: No TSF required in outgoing frame.
1219 * Set this for transmitting beacons and probe responses. */
1220 #define TX_CMD_FLG_TSF_MSK __constant_cpu_to_le32(1 << 16)
1222 /* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword
1223 * alignment of frame's payload data field.
1225 * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4
1226 * field (but not both). Driver must align frame data (i.e. data following
1227 * MAC header) to DWORD boundary. */
1228 #define TX_CMD_FLG_MH_PAD_MSK __constant_cpu_to_le32(1 << 20)
1230 /* accelerate aggregation support
1231 * 0 - no CCMP encryption; 1 - CCMP encryption */
1232 #define TX_CMD_FLG_AGG_CCMP_MSK __constant_cpu_to_le32(1 << 22)
1234 /* HCCA-AP - disable duration overwriting. */
1235 #define TX_CMD_FLG_DUR_MSK __constant_cpu_to_le32(1 << 25)
1239 * TX command security control
1241 #define TX_CMD_SEC_WEP 0x01
1242 #define TX_CMD_SEC_CCM 0x02
1243 #define TX_CMD_SEC_TKIP 0x03
1244 #define TX_CMD_SEC_MSK 0x03
1245 #define TX_CMD_SEC_SHIFT 6
1246 #define TX_CMD_SEC_KEY128 0x08
1249 * security overhead sizes
1251 #define WEP_IV_LEN 4
1252 #define WEP_ICV_LEN 4
1253 #define CCMP_MIC_LEN 8
1254 #define TKIP_ICV_LEN 4
1257 * 4965 uCode updates these Tx attempt count values in host DRAM.
1258 * Used for managing Tx retries when expecting block-acks.
1259 * Driver should set these fields to 0.
1261 struct iwl4965_dram_scratch {
1262 u8 try_cnt; /* Tx attempts */
1263 u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */
1265 } __attribute__ ((packed));
1268 * REPLY_TX = 0x1c (command)
1273 * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size,
1274 * + 8 byte IV for CCM or TKIP (not used for WEP)
1276 * + 8-byte MIC (not used for CCM/WEP)
1277 * NOTE: Does not include Tx command bytes, post-MAC pad bytes,
1278 * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i
1279 * Range: 14-2342 bytes.
1284 * MPDU or MSDU byte count for next frame.
1285 * Used for fragmentation and bursting, but not 11n aggregation.
1286 * Same as "len", but for next frame. Set to 0 if not applicable.
1288 __le16 next_frame_len;
1290 __le32 tx_flags; /* TX_CMD_FLG_* */
1292 /* 4965's uCode may modify this field of the Tx command (in host DRAM!).
1293 * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */
1294 struct iwl4965_dram_scratch scratch;
1296 /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */
1297 __le32 rate_n_flags; /* RATE_MCS_* */
1299 /* Index of destination station in uCode's station table */
1302 /* Type of security encryption: CCM or TKIP */
1303 u8 sec_ctl; /* TX_CMD_SEC_* */
1306 * Index into rate table (see REPLY_TX_LINK_QUALITY_CMD) for initial
1307 * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for
1308 * data frames, this field may be used to selectively reduce initial
1309 * rate (via non-0 value) for special frames (e.g. management), while
1310 * still supporting rate scaling for all frames.
1312 u8 initial_rate_index;
1315 __le16 next_frame_flags;
1322 /* Host DRAM physical address pointer to "scratch" in this command.
1323 * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */
1324 __le32 dram_lsb_ptr;
1327 u8 rts_retry_limit; /*byte 50 */
1328 u8 data_retry_limit; /*byte 51 */
1331 __le16 pm_frame_timeout;
1332 __le16 attempt_duration;
1336 * Duration of EDCA burst Tx Opportunity, in 32-usec units.
1337 * Set this if txop time is not specified by HCCA protocol (e.g. by AP).
1342 * MAC header goes here, followed by 2 bytes padding if MAC header
1343 * length is 26 or 30 bytes, followed by payload data
1346 struct ieee80211_hdr hdr[0];
1347 } __attribute__ ((packed));
1349 /* TX command response is sent after *all* transmission attempts.
1353 * TX_STATUS_FAIL_NEXT_FRAG
1355 * If the fragment flag in the MAC header for the frame being transmitted
1356 * is set and there is insufficient time to transmit the next frame, the
1357 * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'.
1359 * TX_STATUS_FIFO_UNDERRUN
1361 * Indicates the host did not provide bytes to the FIFO fast enough while
1362 * a TX was in progress.
1364 * TX_STATUS_FAIL_MGMNT_ABORT
1366 * This status is only possible if the ABORT ON MGMT RX parameter was
1367 * set to true with the TX command.
1369 * If the MSB of the status parameter is set then an abort sequence is
1370 * required. This sequence consists of the host activating the TX Abort
1371 * control line, and then waiting for the TX Abort command response. This
1372 * indicates that a the device is no longer in a transmit state, and that the
1373 * command FIFO has been cleared. The host must then deactivate the TX Abort
1374 * control line. Receiving is still allowed in this case.
1377 TX_STATUS_SUCCESS = 0x01,
1378 TX_STATUS_DIRECT_DONE = 0x02,
1379 TX_STATUS_FAIL_SHORT_LIMIT = 0x82,
1380 TX_STATUS_FAIL_LONG_LIMIT = 0x83,
1381 TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84,
1382 TX_STATUS_FAIL_MGMNT_ABORT = 0x85,
1383 TX_STATUS_FAIL_NEXT_FRAG = 0x86,
1384 TX_STATUS_FAIL_LIFE_EXPIRE = 0x87,
1385 TX_STATUS_FAIL_DEST_PS = 0x88,
1386 TX_STATUS_FAIL_ABORTED = 0x89,
1387 TX_STATUS_FAIL_BT_RETRY = 0x8a,
1388 TX_STATUS_FAIL_STA_INVALID = 0x8b,
1389 TX_STATUS_FAIL_FRAG_DROPPED = 0x8c,
1390 TX_STATUS_FAIL_TID_DISABLE = 0x8d,
1391 TX_STATUS_FAIL_FRAME_FLUSHED = 0x8e,
1392 TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f,
1393 TX_STATUS_FAIL_TX_LOCKED = 0x90,
1394 TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91,
1397 #define TX_PACKET_MODE_REGULAR 0x0000
1398 #define TX_PACKET_MODE_BURST_SEQ 0x0100
1399 #define TX_PACKET_MODE_BURST_FIRST 0x0200
1402 TX_POWER_PA_NOT_ACTIVE = 0x0,
1406 TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */
1407 TX_STATUS_DELAY_MSK = 0x00000040,
1408 TX_STATUS_ABORT_MSK = 0x00000080,
1409 TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */
1410 TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */
1411 TX_RESERVED = 0x00780000, /* bits 19:22 */
1412 TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */
1413 TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */
1416 static inline int iwl_is_tx_success(u32 status)
1418 status &= TX_STATUS_MSK;
1419 return (status == TX_STATUS_SUCCESS)
1420 || (status == TX_STATUS_DIRECT_DONE);
1425 /* *******************************
1426 * TX aggregation status
1427 ******************************* */
1430 AGG_TX_STATE_TRANSMITTED = 0x00,
1431 AGG_TX_STATE_UNDERRUN_MSK = 0x01,
1432 AGG_TX_STATE_BT_PRIO_MSK = 0x02,
1433 AGG_TX_STATE_FEW_BYTES_MSK = 0x04,
1434 AGG_TX_STATE_ABORT_MSK = 0x08,
1435 AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10,
1436 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20,
1437 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK = 0x40,
1438 AGG_TX_STATE_SCD_QUERY_MSK = 0x80,
1439 AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100,
1440 AGG_TX_STATE_RESPONSE_MSK = 0x1ff,
1441 AGG_TX_STATE_DUMP_TX_MSK = 0x200,
1442 AGG_TX_STATE_DELAY_TX_MSK = 0x400
1445 #define AGG_TX_STATE_LAST_SENT_MSK \
1446 (AGG_TX_STATE_LAST_SENT_TTL_MSK | \
1447 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK | \
1448 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK)
1450 /* # tx attempts for first frame in aggregation */
1451 #define AGG_TX_STATE_TRY_CNT_POS 12
1452 #define AGG_TX_STATE_TRY_CNT_MSK 0xf000
1454 /* Command ID and sequence number of Tx command for this frame */
1455 #define AGG_TX_STATE_SEQ_NUM_POS 16
1456 #define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000
1459 * REPLY_TX = 0x1c (response)
1461 * This response may be in one of two slightly different formats, indicated
1462 * by the frame_count field:
1464 * 1) No aggregation (frame_count == 1). This reports Tx results for
1465 * a single frame. Multiple attempts, at various bit rates, may have
1466 * been made for this frame.
1468 * 2) Aggregation (frame_count > 1). This reports Tx results for
1469 * 2 or more frames that used block-acknowledge. All frames were
1470 * transmitted at same rate. Rate scaling may have been used if first
1471 * frame in this new agg block failed in previous agg block(s).
1473 * Note that, for aggregation, ACK (block-ack) status is not delivered here;
1474 * block-ack has not been received by the time the 4965 records this status.
1475 * This status relates to reasons the tx might have been blocked or aborted
1476 * within the sending station (this 4965), rather than whether it was
1477 * received successfully by the destination station.
1479 struct agg_tx_status {
1482 } __attribute__ ((packed));
1484 struct iwl4965_tx_resp {
1485 u8 frame_count; /* 1 no aggregation, >1 aggregation */
1486 u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */
1487 u8 failure_rts; /* # failures due to unsuccessful RTS */
1488 u8 failure_frame; /* # failures due to no ACK (unused for agg) */
1490 /* For non-agg: Rate at which frame was successful.
1491 * For agg: Rate at which all frames were transmitted. */
1492 __le32 rate_n_flags; /* RATE_MCS_* */
1494 /* For non-agg: RTS + CTS + frame tx attempts time + ACK.
1495 * For agg: RTS + CTS + aggregation tx time + block-ack time. */
1496 __le16 wireless_media_time; /* uSecs */
1499 __le32 pa_power1; /* RF power amplifier measurement (not used) */
1503 * For non-agg: frame status TX_STATUS_*
1504 * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status
1505 * fields follow this one, up to frame_count.
1507 * 11- 0: AGG_TX_STATE_* status code
1508 * 15-12: Retry count for 1st frame in aggregation (retries
1509 * occur if tx failed for this frame when it was a
1510 * member of a previous aggregation block). If rate
1511 * scaling is used, retry count indicates the rate
1512 * table entry used for all frames in the new agg.
1513 * 31-16: Sequence # for this frame's Tx cmd (not SSN!)
1517 struct agg_tx_status agg_status[0]; /* for each agg frame */
1519 } __attribute__ ((packed));
1521 struct iwl5000_tx_resp {
1522 u8 frame_count; /* 1 no aggregation, >1 aggregation */
1523 u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */
1524 u8 failure_rts; /* # failures due to unsuccessful RTS */
1525 u8 failure_frame; /* # failures due to no ACK (unused for agg) */
1527 /* For non-agg: Rate at which frame was successful.
1528 * For agg: Rate at which all frames were transmitted. */
1529 __le32 rate_n_flags; /* RATE_MCS_* */
1531 /* For non-agg: RTS + CTS + frame tx attempts time + ACK.
1532 * For agg: RTS + CTS + aggregation tx time + block-ack time. */
1533 __le16 wireless_media_time; /* uSecs */
1536 __le32 pa_power1; /* RF power amplifier measurement (not used) */
1544 * For non-agg: frame status TX_STATUS_*
1545 * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status
1546 * fields follow this one, up to frame_count.
1548 * 11- 0: AGG_TX_STATE_* status code
1549 * 15-12: Retry count for 1st frame in aggregation (retries
1550 * occur if tx failed for this frame when it was a
1551 * member of a previous aggregation block). If rate
1552 * scaling is used, retry count indicates the rate
1553 * table entry used for all frames in the new agg.
1554 * 31-16: Sequence # for this frame's Tx cmd (not SSN!)
1556 struct agg_tx_status status; /* TX status (in aggregation -
1557 * status of 1st frame) */
1558 } __attribute__ ((packed));
1560 * REPLY_COMPRESSED_BA = 0xc5 (response only, not a command)
1562 * Reports Block-Acknowledge from recipient station
1564 struct iwl_compressed_ba_resp {
1565 __le32 sta_addr_lo32;
1566 __le16 sta_addr_hi16;
1569 /* Index of recipient (BA-sending) station in uCode's station table */
1576 } __attribute__ ((packed));
1579 * REPLY_TX_PWR_TABLE_CMD = 0x97 (command, has simple generic response)
1581 * See details under "TXPOWER" in iwl-4965-hw.h.
1583 struct iwl4965_txpowertable_cmd {
1584 u8 band; /* 0: 5 GHz, 1: 2.4 GHz */
1587 struct iwl4965_tx_power_db tx_power;
1588 } __attribute__ ((packed));
1590 /*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */
1591 #define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1 << 0)
1593 /* # of EDCA prioritized tx fifos */
1594 #define LINK_QUAL_AC_NUM AC_NUM
1596 /* # entries in rate scale table to support Tx retries */
1597 #define LINK_QUAL_MAX_RETRY_NUM 16
1599 /* Tx antenna selection values */
1600 #define LINK_QUAL_ANT_A_MSK (1 << 0)
1601 #define LINK_QUAL_ANT_B_MSK (1 << 1)
1602 #define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK)
1606 * struct iwl_link_qual_general_params
1608 * Used in REPLY_TX_LINK_QUALITY_CMD
1610 struct iwl_link_qual_general_params {
1613 /* No entries at or above this (driver chosen) index contain MIMO */
1616 /* Best single antenna to use for single stream (legacy, SISO). */
1617 u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */
1619 /* Best antennas to use for MIMO (unused for 4965, assumes both). */
1620 u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */
1623 * If driver needs to use different initial rates for different
1624 * EDCA QOS access categories (as implemented by tx fifos 0-3),
1625 * this table will set that up, by indicating the indexes in the
1626 * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start.
1627 * Otherwise, driver should set all entries to 0.
1630 * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice
1631 * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3.
1633 u8 start_rate_index[LINK_QUAL_AC_NUM];
1634 } __attribute__ ((packed));
1637 * struct iwl_link_qual_agg_params
1639 * Used in REPLY_TX_LINK_QUALITY_CMD
1641 struct iwl_link_qual_agg_params {
1643 /* Maximum number of uSec in aggregation.
1644 * Driver should set this to 4000 (4 milliseconds). */
1645 __le16 agg_time_limit;
1648 * Number of Tx retries allowed for a frame, before that frame will
1649 * no longer be considered for the start of an aggregation sequence
1650 * (scheduler will then try to tx it as single frame).
1651 * Driver should set this to 3.
1653 u8 agg_dis_start_th;
1656 * Maximum number of frames in aggregation.
1657 * 0 = no limit (default). 1 = no aggregation.
1658 * Other values = max # frames in aggregation.
1660 u8 agg_frame_cnt_limit;
1663 } __attribute__ ((packed));
1666 * REPLY_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response)
1668 * For 4965 only; 3945 uses REPLY_RATE_SCALE.
1670 * Each station in the 4965's internal station table has its own table of 16
1671 * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when
1672 * an ACK is not received. This command replaces the entire table for
1675 * NOTE: Station must already be in 4965's station table. Use REPLY_ADD_STA.
1677 * The rate scaling procedures described below work well. Of course, other
1678 * procedures are possible, and may work better for particular environments.
1681 * FILLING THE RATE TABLE
1683 * Given a particular initial rate and mode, as determined by the rate
1684 * scaling algorithm described below, the Linux driver uses the following
1685 * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the
1686 * Link Quality command:
1689 * 1) If using High-throughput (HT) (SISO or MIMO) initial rate:
1690 * a) Use this same initial rate for first 3 entries.
1691 * b) Find next lower available rate using same mode (SISO or MIMO),
1692 * use for next 3 entries. If no lower rate available, switch to
1693 * legacy mode (no FAT channel, no MIMO, no short guard interval).
1694 * c) If using MIMO, set command's mimo_delimiter to number of entries
1695 * using MIMO (3 or 6).
1696 * d) After trying 2 HT rates, switch to legacy mode (no FAT channel,
1697 * no MIMO, no short guard interval), at the next lower bit rate
1698 * (e.g. if second HT bit rate was 54, try 48 legacy), and follow
1699 * legacy procedure for remaining table entries.
1701 * 2) If using legacy initial rate:
1702 * a) Use the initial rate for only one entry.
1703 * b) For each following entry, reduce the rate to next lower available
1704 * rate, until reaching the lowest available rate.
1705 * c) When reducing rate, also switch antenna selection.
1706 * d) Once lowest available rate is reached, repeat this rate until
1707 * rate table is filled (16 entries), switching antenna each entry.
1710 * ACCUMULATING HISTORY
1712 * The rate scaling algorithm for 4965, as implemented in Linux driver, uses
1713 * two sets of frame Tx success history: One for the current/active modulation
1714 * mode, and one for a speculative/search mode that is being attempted. If the
1715 * speculative mode turns out to be more effective (i.e. actual transfer
1716 * rate is better), then the driver continues to use the speculative mode
1717 * as the new current active mode.
1719 * Each history set contains, separately for each possible rate, data for a
1720 * sliding window of the 62 most recent tx attempts at that rate. The data
1721 * includes a shifting bitmap of success(1)/failure(0), and sums of successful
1722 * and attempted frames, from which the driver can additionally calculate a
1723 * success ratio (success / attempted) and number of failures
1724 * (attempted - success), and control the size of the window (attempted).
1725 * The driver uses the bit map to remove successes from the success sum, as
1726 * the oldest tx attempts fall out of the window.
1728 * When the 4965 makes multiple tx attempts for a given frame, each attempt
1729 * might be at a different rate, and have different modulation characteristics
1730 * (e.g. antenna, fat channel, short guard interval), as set up in the rate
1731 * scaling table in the Link Quality command. The driver must determine
1732 * which rate table entry was used for each tx attempt, to determine which
1733 * rate-specific history to update, and record only those attempts that
1734 * match the modulation characteristics of the history set.
1736 * When using block-ack (aggregation), all frames are transmitted at the same
1737 * rate, since there is no per-attempt acknowledgement from the destination
1738 * station. The Tx response struct iwl_tx_resp indicates the Tx rate in
1739 * rate_n_flags field. After receiving a block-ack, the driver can update
1740 * history for the entire block all at once.
1743 * FINDING BEST STARTING RATE:
1745 * When working with a selected initial modulation mode (see below), the
1746 * driver attempts to find a best initial rate. The initial rate is the
1747 * first entry in the Link Quality command's rate table.
1749 * 1) Calculate actual throughput (success ratio * expected throughput, see
1750 * table below) for current initial rate. Do this only if enough frames
1751 * have been attempted to make the value meaningful: at least 6 failed
1752 * tx attempts, or at least 8 successes. If not enough, don't try rate
1755 * 2) Find available rates adjacent to current initial rate. Available means:
1756 * a) supported by hardware &&
1757 * b) supported by association &&
1758 * c) within any constraints selected by user
1760 * 3) Gather measured throughputs for adjacent rates. These might not have
1761 * enough history to calculate a throughput. That's okay, we might try
1762 * using one of them anyway!
1764 * 4) Try decreasing rate if, for current rate:
1765 * a) success ratio is < 15% ||
1766 * b) lower adjacent rate has better measured throughput ||
1767 * c) higher adjacent rate has worse throughput, and lower is unmeasured
1769 * As a sanity check, if decrease was determined above, leave rate
1771 * a) lower rate unavailable
1772 * b) success ratio at current rate > 85% (very good)
1773 * c) current measured throughput is better than expected throughput
1774 * of lower rate (under perfect 100% tx conditions, see table below)
1776 * 5) Try increasing rate if, for current rate:
1777 * a) success ratio is < 15% ||
1778 * b) both adjacent rates' throughputs are unmeasured (try it!) ||
1779 * b) higher adjacent rate has better measured throughput ||
1780 * c) lower adjacent rate has worse throughput, and higher is unmeasured
1782 * As a sanity check, if increase was determined above, leave rate
1784 * a) success ratio at current rate < 70%. This is not particularly
1785 * good performance; higher rate is sure to have poorer success.
1787 * 6) Re-evaluate the rate after each tx frame. If working with block-
1788 * acknowledge, history and statistics may be calculated for the entire
1789 * block (including prior history that fits within the history windows),
1790 * before re-evaluation.
1792 * FINDING BEST STARTING MODULATION MODE:
1794 * After working with a modulation mode for a "while" (and doing rate scaling),
1795 * the driver searches for a new initial mode in an attempt to improve
1796 * throughput. The "while" is measured by numbers of attempted frames:
1798 * For legacy mode, search for new mode after:
1799 * 480 successful frames, or 160 failed frames
1800 * For high-throughput modes (SISO or MIMO), search for new mode after:
1801 * 4500 successful frames, or 400 failed frames
1803 * Mode switch possibilities are (3 for each mode):
1806 * Change antenna, try SISO (if HT association), try MIMO (if HT association)
1808 * Change antenna, try MIMO, try shortened guard interval (SGI)
1810 * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI)
1812 * When trying a new mode, use the same bit rate as the old/current mode when
1813 * trying antenna switches and shortened guard interval. When switching to
1814 * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate
1815 * for which the expected throughput (under perfect conditions) is about the
1816 * same or slightly better than the actual measured throughput delivered by
1817 * the old/current mode.
1819 * Actual throughput can be estimated by multiplying the expected throughput
1820 * by the success ratio (successful / attempted tx frames). Frame size is
1821 * not considered in this calculation; it assumes that frame size will average
1822 * out to be fairly consistent over several samples. The following are
1823 * metric values for expected throughput assuming 100% success ratio.
1824 * Only G band has support for CCK rates:
1826 * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60
1828 * G: 7 13 35 58 40 57 72 98 121 154 177 186 186
1829 * A: 0 0 0 0 40 57 72 98 121 154 177 186 186
1830 * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202
1831 * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211
1832 * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251
1833 * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257
1834 * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257
1835 * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264
1836 * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289
1837 * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293
1839 * After the new mode has been tried for a short while (minimum of 6 failed
1840 * frames or 8 successful frames), compare success ratio and actual throughput
1841 * estimate of the new mode with the old. If either is better with the new
1842 * mode, continue to use the new mode.
1844 * Continue comparing modes until all 3 possibilities have been tried.
1845 * If moving from legacy to HT, try all 3 possibilities from the new HT
1846 * mode. After trying all 3, a best mode is found. Continue to use this mode
1847 * for the longer "while" described above (e.g. 480 successful frames for
1848 * legacy), and then repeat the search process.
1851 struct iwl_link_quality_cmd {
1853 /* Index of destination/recipient station in uCode's station table */
1856 __le16 control; /* not used */
1857 struct iwl_link_qual_general_params general_params;
1858 struct iwl_link_qual_agg_params agg_params;
1861 * Rate info; when using rate-scaling, Tx command's initial_rate_index
1862 * specifies 1st Tx rate attempted, via index into this table.
1863 * 4965 works its way through table when retrying Tx.
1866 __le32 rate_n_flags; /* RATE_MCS_*, IWL_RATE_* */
1867 } rs_table[LINK_QUAL_MAX_RETRY_NUM];
1869 } __attribute__ ((packed));
1872 * REPLY_BT_CONFIG = 0x9b (command, has simple generic response)
1874 * 3945 and 4965 support hardware handshake with Bluetooth device on
1875 * same platform. Bluetooth device alerts wireless device when it will Tx;
1876 * wireless device can delay or kill its own Tx to accomodate.
1878 struct iwl4965_bt_cmd {
1883 __le32 kill_ack_mask;
1884 __le32 kill_cts_mask;
1885 } __attribute__ ((packed));
1887 /******************************************************************************
1889 * Spectrum Management (802.11h) Commands, Responses, Notifications:
1891 *****************************************************************************/
1894 * Spectrum Management
1896 #define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \
1897 RXON_FILTER_CTL2HOST_MSK | \
1898 RXON_FILTER_ACCEPT_GRP_MSK | \
1899 RXON_FILTER_DIS_DECRYPT_MSK | \
1900 RXON_FILTER_DIS_GRP_DECRYPT_MSK | \
1901 RXON_FILTER_ASSOC_MSK | \
1902 RXON_FILTER_BCON_AWARE_MSK)
1904 struct iwl4965_measure_channel {
1905 __le32 duration; /* measurement duration in extended beacon
1907 u8 channel; /* channel to measure */
1908 u8 type; /* see enum iwl4965_measure_type */
1910 } __attribute__ ((packed));
1913 * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (command)
1915 struct iwl4965_spectrum_cmd {
1916 __le16 len; /* number of bytes starting from token */
1917 u8 token; /* token id */
1918 u8 id; /* measurement id -- 0 or 1 */
1919 u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */
1920 u8 periodic; /* 1 = periodic */
1921 __le16 path_loss_timeout;
1922 __le32 start_time; /* start time in extended beacon format */
1924 __le32 flags; /* rxon flags */
1925 __le32 filter_flags; /* rxon filter flags */
1926 __le16 channel_count; /* minimum 1, maximum 10 */
1928 struct iwl4965_measure_channel channels[10];
1929 } __attribute__ ((packed));
1932 * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (response)
1934 struct iwl4965_spectrum_resp {
1936 u8 id; /* id of the prior command replaced, or 0xff */
1937 __le16 status; /* 0 - command will be handled
1938 * 1 - cannot handle (conflicts with another
1940 } __attribute__ ((packed));
1942 enum iwl4965_measurement_state {
1943 IWL_MEASUREMENT_START = 0,
1944 IWL_MEASUREMENT_STOP = 1,
1947 enum iwl4965_measurement_status {
1948 IWL_MEASUREMENT_OK = 0,
1949 IWL_MEASUREMENT_CONCURRENT = 1,
1950 IWL_MEASUREMENT_CSA_CONFLICT = 2,
1951 IWL_MEASUREMENT_TGH_CONFLICT = 3,
1953 IWL_MEASUREMENT_STOPPED = 6,
1954 IWL_MEASUREMENT_TIMEOUT = 7,
1955 IWL_MEASUREMENT_PERIODIC_FAILED = 8,
1958 #define NUM_ELEMENTS_IN_HISTOGRAM 8
1960 struct iwl4965_measurement_histogram {
1961 __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */
1962 __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */
1963 } __attribute__ ((packed));
1965 /* clear channel availability counters */
1966 struct iwl4965_measurement_cca_counters {
1969 } __attribute__ ((packed));
1971 enum iwl4965_measure_type {
1972 IWL_MEASURE_BASIC = (1 << 0),
1973 IWL_MEASURE_CHANNEL_LOAD = (1 << 1),
1974 IWL_MEASURE_HISTOGRAM_RPI = (1 << 2),
1975 IWL_MEASURE_HISTOGRAM_NOISE = (1 << 3),
1976 IWL_MEASURE_FRAME = (1 << 4),
1977 /* bits 5:6 are reserved */
1978 IWL_MEASURE_IDLE = (1 << 7),
1982 * SPECTRUM_MEASURE_NOTIFICATION = 0x75 (notification only, not a command)
1984 struct iwl4965_spectrum_notification {
1985 u8 id; /* measurement id -- 0 or 1 */
1987 u8 channel_index; /* index in measurement channel list */
1988 u8 state; /* 0 - start, 1 - stop */
1989 __le32 start_time; /* lower 32-bits of TSF */
1990 u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */
1992 u8 type; /* see enum iwl4965_measurement_type */
1994 /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only
1995 * valid if applicable for measurement type requested. */
1996 __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */
1997 __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */
1998 __le32 cca_time; /* channel load time in usecs */
1999 u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 -
2002 struct iwl4965_measurement_histogram histogram;
2003 __le32 stop_time; /* lower 32-bits of TSF */
2004 __le32 status; /* see iwl4965_measurement_status */
2005 } __attribute__ ((packed));
2007 /******************************************************************************
2009 * Power Management Commands, Responses, Notifications:
2011 *****************************************************************************/
2014 * struct iwl_powertable_cmd - Power Table Command
2015 * @flags: See below:
2017 * POWER_TABLE_CMD = 0x77 (command, has simple generic response)
2020 * bit 0 - '0' Driver not allow power management
2021 * '1' Driver allow PM (use rest of parameters)
2022 * uCode send sleep notifications:
2023 * bit 1 - '0' Don't send sleep notification
2024 * '1' send sleep notification (SEND_PM_NOTIFICATION)
2026 * bit 2 - '0' PM have to walk up every DTIM
2027 * '1' PM could sleep over DTIM till listen Interval.
2029 * bit 3 - '0' (PCI_LINK_CTRL & 0x1)
2030 * '1' !(PCI_LINK_CTRL & 0x1)
2032 * bit 31/30- '00' use both mac/xtal sleeps
2033 * '01' force Mac sleep
2034 * '10' force xtal sleep
2037 * NOTE: if sleep_interval[SLEEP_INTRVL_TABLE_SIZE-1] > DTIM period then
2038 * ucode assume sleep over DTIM is allowed and we don't need to wakeup
2041 #define IWL_POWER_VEC_SIZE 5
2043 #define IWL_POWER_DRIVER_ALLOW_SLEEP_MSK __constant_cpu_to_le16(1 << 0)
2044 #define IWL_POWER_SLEEP_OVER_DTIM_MSK __constant_cpu_to_le16(1 << 2)
2045 #define IWL_POWER_PCI_PM_MSK __constant_cpu_to_le16(1 << 3)
2046 #define IWL_POWER_FAST_PD __constant_cpu_to_le16(1 << 4)
2048 struct iwl_powertable_cmd {
2050 u8 keep_alive_seconds;
2052 __le32 rx_data_timeout;
2053 __le32 tx_data_timeout;
2054 __le32 sleep_interval[IWL_POWER_VEC_SIZE];
2055 __le32 keep_alive_beacons;
2056 } __attribute__ ((packed));
2059 * PM_SLEEP_NOTIFICATION = 0x7A (notification only, not a command)
2060 * 3945 and 4965 identical.
2062 struct iwl4965_sleep_notification {
2069 } __attribute__ ((packed));
2071 /* Sleep states. 3945 and 4965 identical. */
2073 IWL_PM_NO_SLEEP = 0,
2075 IWL_PM_SLP_FULL_MAC_UNASSOCIATE = 2,
2076 IWL_PM_SLP_FULL_MAC_CARD_STATE = 3,
2078 IWL_PM_SLP_REPENT = 5,
2079 IWL_PM_WAKEUP_BY_TIMER = 6,
2080 IWL_PM_WAKEUP_BY_DRIVER = 7,
2081 IWL_PM_WAKEUP_BY_RFKILL = 8,
2083 IWL_PM_NUM_OF_MODES = 12,
2087 * REPLY_CARD_STATE_CMD = 0xa0 (command, has simple generic response)
2089 #define CARD_STATE_CMD_DISABLE 0x00 /* Put card to sleep */
2090 #define CARD_STATE_CMD_ENABLE 0x01 /* Wake up card */
2091 #define CARD_STATE_CMD_HALT 0x02 /* Power down permanently */
2092 struct iwl4965_card_state_cmd {
2093 __le32 status; /* CARD_STATE_CMD_* request new power state */
2094 } __attribute__ ((packed));
2097 * CARD_STATE_NOTIFICATION = 0xa1 (notification only, not a command)
2099 struct iwl4965_card_state_notif {
2101 } __attribute__ ((packed));
2103 #define HW_CARD_DISABLED 0x01
2104 #define SW_CARD_DISABLED 0x02
2105 #define RF_CARD_DISABLED 0x04
2106 #define RXON_CARD_DISABLED 0x10
2108 struct iwl_ct_kill_config {
2110 __le32 critical_temperature_M;
2111 __le32 critical_temperature_R;
2112 } __attribute__ ((packed));
2114 /******************************************************************************
2116 * Scan Commands, Responses, Notifications:
2118 *****************************************************************************/
2120 #define SCAN_CHANNEL_TYPE_PASSIVE __constant_cpu_to_le32(0)
2121 #define SCAN_CHANNEL_TYPE_ACTIVE __constant_cpu_to_le32(1)
2124 * struct iwl_scan_channel - entry in REPLY_SCAN_CMD channel table
2126 * One for each channel in the scan list.
2127 * Each channel can independently select:
2128 * 1) SSID for directed active scans
2129 * 2) Txpower setting (for rate specified within Tx command)
2130 * 3) How long to stay on-channel (behavior may be modified by quiet_time,
2131 * quiet_plcp_th, good_CRC_th)
2133 * To avoid uCode errors, make sure the following are true (see comments
2134 * under struct iwl_scan_cmd about max_out_time and quiet_time):
2135 * 1) If using passive_dwell (i.e. passive_dwell != 0):
2136 * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0)
2137 * 2) quiet_time <= active_dwell
2138 * 3) If restricting off-channel time (i.e. max_out_time !=0):
2139 * passive_dwell < max_out_time
2140 * active_dwell < max_out_time
2142 struct iwl_scan_channel {
2144 * type is defined as:
2145 * 0:0 1 = active, 0 = passive
2146 * 1:20 SSID direct bit map; if a bit is set, then corresponding
2147 * SSID IE is transmitted in probe request.
2151 __le16 channel; /* band is selected by iwl_scan_cmd "flags" field */
2152 u8 tx_gain; /* gain for analog radio */
2153 u8 dsp_atten; /* gain for DSP */
2154 __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */
2155 __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */
2156 } __attribute__ ((packed));
2159 * struct iwl_ssid_ie - directed scan network information element
2161 * Up to 4 of these may appear in REPLY_SCAN_CMD, selected by "type" field
2162 * in struct iwl4965_scan_channel; each channel may select different ssids from
2163 * among the 4 entries. SSID IEs get transmitted in reverse order of entry.
2165 struct iwl_ssid_ie {
2169 } __attribute__ ((packed));
2171 #define PROBE_OPTION_MAX 0x14
2172 #define TX_CMD_LIFE_TIME_INFINITE __constant_cpu_to_le32(0xFFFFFFFF)
2173 #define IWL_GOOD_CRC_TH __constant_cpu_to_le16(1)
2174 #define IWL_MAX_SCAN_SIZE 1024
2177 * REPLY_SCAN_CMD = 0x80 (command)
2179 * The hardware scan command is very powerful; the driver can set it up to
2180 * maintain (relatively) normal network traffic while doing a scan in the
2181 * background. The max_out_time and suspend_time control the ratio of how
2182 * long the device stays on an associated network channel ("service channel")
2183 * vs. how long it's away from the service channel, i.e. tuned to other channels
2186 * max_out_time is the max time off-channel (in usec), and suspend_time
2187 * is how long (in "extended beacon" format) that the scan is "suspended"
2188 * after returning to the service channel. That is, suspend_time is the
2189 * time that we stay on the service channel, doing normal work, between
2190 * scan segments. The driver may set these parameters differently to support
2191 * scanning when associated vs. not associated, and light vs. heavy traffic
2192 * loads when associated.
2194 * After receiving this command, the device's scan engine does the following;
2196 * 1) Sends SCAN_START notification to driver
2197 * 2) Checks to see if it has time to do scan for one channel
2198 * 3) Sends NULL packet, with power-save (PS) bit set to 1,
2199 * to tell AP that we're going off-channel
2200 * 4) Tunes to first channel in scan list, does active or passive scan
2201 * 5) Sends SCAN_RESULT notification to driver
2202 * 6) Checks to see if it has time to do scan on *next* channel in list
2203 * 7) Repeats 4-6 until it no longer has time to scan the next channel
2204 * before max_out_time expires
2205 * 8) Returns to service channel
2206 * 9) Sends NULL packet with PS=0 to tell AP that we're back
2207 * 10) Stays on service channel until suspend_time expires
2208 * 11) Repeats entire process 2-10 until list is complete
2209 * 12) Sends SCAN_COMPLETE notification
2211 * For fast, efficient scans, the scan command also has support for staying on
2212 * a channel for just a short time, if doing active scanning and getting no
2213 * responses to the transmitted probe request. This time is controlled by
2214 * quiet_time, and the number of received packets below which a channel is
2215 * considered "quiet" is controlled by quiet_plcp_threshold.
2217 * For active scanning on channels that have regulatory restrictions against
2218 * blindly transmitting, the scan can listen before transmitting, to make sure
2219 * that there is already legitimate activity on the channel. If enough
2220 * packets are cleanly received on the channel (controlled by good_CRC_th,
2221 * typical value 1), the scan engine starts transmitting probe requests.
2223 * Driver must use separate scan commands for 2.4 vs. 5 GHz bands.
2225 * To avoid uCode errors, see timing restrictions described under
2226 * struct iwl_scan_channel.
2228 struct iwl_scan_cmd {
2231 u8 channel_count; /* # channels in channel list */
2232 __le16 quiet_time; /* dwell only this # millisecs on quiet channel
2233 * (only for active scan) */
2234 __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */
2235 __le16 good_CRC_th; /* passive -> active promotion threshold */
2236 __le16 rx_chain; /* RXON_RX_CHAIN_* */
2237 __le32 max_out_time; /* max usec to be away from associated (service)
2239 __le32 suspend_time; /* pause scan this long (in "extended beacon
2240 * format") when returning to service chnl:
2241 * 3945; 31:24 # beacons, 19:0 additional usec,
2242 * 4965; 31:22 # beacons, 21:0 additional usec.
2244 __le32 flags; /* RXON_FLG_* */
2245 __le32 filter_flags; /* RXON_FILTER_* */
2247 /* For active scans (set to all-0s for passive scans).
2248 * Does not include payload. Must specify Tx rate; no rate scaling. */
2249 struct iwl_tx_cmd tx_cmd;
2251 /* For directed active scans (set to all-0s otherwise) */
2252 struct iwl_ssid_ie direct_scan[PROBE_OPTION_MAX];
2255 * Probe request frame, followed by channel list.
2257 * Size of probe request frame is specified by byte count in tx_cmd.
2258 * Channel list follows immediately after probe request frame.
2259 * Number of channels in list is specified by channel_count.
2260 * Each channel in list is of type:
2262 * struct iwl4965_scan_channel channels[0];
2264 * NOTE: Only one band of channels can be scanned per pass. You
2265 * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait
2266 * for one scan to complete (i.e. receive SCAN_COMPLETE_NOTIFICATION)
2267 * before requesting another scan.
2270 } __attribute__ ((packed));
2272 /* Can abort will notify by complete notification with abort status. */
2273 #define CAN_ABORT_STATUS __constant_cpu_to_le32(0x1)
2274 /* complete notification statuses */
2275 #define ABORT_STATUS 0x2
2278 * REPLY_SCAN_CMD = 0x80 (response)
2280 struct iwl_scanreq_notification {
2281 __le32 status; /* 1: okay, 2: cannot fulfill request */
2282 } __attribute__ ((packed));
2285 * SCAN_START_NOTIFICATION = 0x82 (notification only, not a command)
2287 struct iwl_scanstart_notification {
2290 __le32 beacon_timer;
2295 } __attribute__ ((packed));
2297 #define SCAN_OWNER_STATUS 0x1;
2298 #define MEASURE_OWNER_STATUS 0x2;
2300 #define NUMBER_OF_STATISTICS 1 /* first __le32 is good CRC */
2302 * SCAN_RESULTS_NOTIFICATION = 0x83 (notification only, not a command)
2304 struct iwl_scanresults_notification {
2310 __le32 statistics[NUMBER_OF_STATISTICS];
2311 } __attribute__ ((packed));
2314 * SCAN_COMPLETE_NOTIFICATION = 0x84 (notification only, not a command)
2316 struct iwl_scancomplete_notification {
2317 u8 scanned_channels;
2323 } __attribute__ ((packed));
2326 /******************************************************************************
2328 * IBSS/AP Commands and Notifications:
2330 *****************************************************************************/
2333 * BEACON_NOTIFICATION = 0x90 (notification only, not a command)
2335 struct iwl4965_beacon_notif {
2336 struct iwl4965_tx_resp beacon_notify_hdr;
2339 __le32 ibss_mgr_status;
2340 } __attribute__ ((packed));
2343 * REPLY_TX_BEACON = 0x91 (command, has simple generic response)
2345 struct iwl_tx_beacon_cmd {
2346 struct iwl_tx_cmd tx;
2350 struct ieee80211_hdr frame[0]; /* beacon frame */
2351 } __attribute__ ((packed));
2353 /******************************************************************************
2355 * Statistics Commands and Notifications:
2357 *****************************************************************************/
2359 #define IWL_TEMP_CONVERT 260
2361 #define SUP_RATE_11A_MAX_NUM_CHANNELS 8
2362 #define SUP_RATE_11B_MAX_NUM_CHANNELS 4
2363 #define SUP_RATE_11G_MAX_NUM_CHANNELS 12
2365 /* Used for passing to driver number of successes and failures per rate */
2366 struct rate_histogram {
2368 __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
2369 __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
2370 __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
2373 __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
2374 __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
2375 __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
2377 } __attribute__ ((packed));
2379 /* statistics command response */
2381 struct statistics_rx_phy {
2387 __le32 early_overrun_err;
2389 __le32 false_alarm_cnt;
2390 __le32 fina_sync_err_cnt;
2392 __le32 fina_timeout;
2393 __le32 unresponded_rts;
2394 __le32 rxe_frame_limit_overrun;
2395 __le32 sent_ack_cnt;
2396 __le32 sent_cts_cnt;
2397 __le32 sent_ba_rsp_cnt;
2398 __le32 dsp_self_kill;
2399 __le32 mh_format_err;
2400 __le32 re_acq_main_rssi_sum;
2402 } __attribute__ ((packed));
2404 struct statistics_rx_ht_phy {
2407 __le32 early_overrun_err;
2410 __le32 mh_format_err;
2411 __le32 agg_crc32_good;
2412 __le32 agg_mpdu_cnt;
2415 } __attribute__ ((packed));
2417 struct statistics_rx_non_phy {
2418 __le32 bogus_cts; /* CTS received when not expecting CTS */
2419 __le32 bogus_ack; /* ACK received when not expecting ACK */
2420 __le32 non_bssid_frames; /* number of frames with BSSID that
2421 * doesn't belong to the STA BSSID */
2422 __le32 filtered_frames; /* count frames that were dumped in the
2423 * filtering process */
2424 __le32 non_channel_beacons; /* beacons with our bss id but not on
2425 * our serving channel */
2426 __le32 channel_beacons; /* beacons with our bss id and in our
2427 * serving channel */
2428 __le32 num_missed_bcon; /* number of missed beacons */
2429 __le32 adc_rx_saturation_time; /* count in 0.8us units the time the
2430 * ADC was in saturation */
2431 __le32 ina_detection_search_time;/* total time (in 0.8us) searched
2433 __le32 beacon_silence_rssi_a; /* RSSI silence after beacon frame */
2434 __le32 beacon_silence_rssi_b; /* RSSI silence after beacon frame */
2435 __le32 beacon_silence_rssi_c; /* RSSI silence after beacon frame */
2436 __le32 interference_data_flag; /* flag for interference data
2437 * availability. 1 when data is
2439 __le32 channel_load; /* counts RX Enable time in uSec */
2440 __le32 dsp_false_alarms; /* DSP false alarm (both OFDM
2441 * and CCK) counter */
2442 __le32 beacon_rssi_a;
2443 __le32 beacon_rssi_b;
2444 __le32 beacon_rssi_c;
2445 __le32 beacon_energy_a;
2446 __le32 beacon_energy_b;
2447 __le32 beacon_energy_c;
2448 } __attribute__ ((packed));
2450 struct statistics_rx {
2451 struct statistics_rx_phy ofdm;
2452 struct statistics_rx_phy cck;
2453 struct statistics_rx_non_phy general;
2454 struct statistics_rx_ht_phy ofdm_ht;
2455 } __attribute__ ((packed));
2457 struct statistics_tx_non_phy_agg {
2459 __le32 ba_reschedule_frames;
2460 __le32 scd_query_agg_frame_cnt;
2461 __le32 scd_query_no_agg;
2462 __le32 scd_query_agg;
2463 __le32 scd_query_mismatch;
2464 __le32 frame_not_ready;
2466 __le32 bt_prio_kill;
2467 __le32 rx_ba_rsp_cnt;
2470 } __attribute__ ((packed));
2472 struct statistics_tx {
2473 __le32 preamble_cnt;
2474 __le32 rx_detected_cnt;
2475 __le32 bt_prio_defer_cnt;
2476 __le32 bt_prio_kill_cnt;
2477 __le32 few_bytes_cnt;
2480 __le32 expected_ack_cnt;
2481 __le32 actual_ack_cnt;
2482 __le32 dump_msdu_cnt;
2483 __le32 burst_abort_next_frame_mismatch_cnt;
2484 __le32 burst_abort_missing_next_frame_cnt;
2485 __le32 cts_timeout_collision;
2486 __le32 ack_or_ba_timeout_collision;
2487 struct statistics_tx_non_phy_agg agg;
2488 } __attribute__ ((packed));
2490 struct statistics_dbg {
2494 } __attribute__ ((packed));
2496 struct statistics_div {
2503 } __attribute__ ((packed));
2505 struct statistics_general {
2507 __le32 temperature_m;
2508 struct statistics_dbg dbg;
2512 __le32 ttl_timestamp;
2513 struct statistics_div div;
2514 __le32 rx_enable_counter;
2518 } __attribute__ ((packed));
2521 * REPLY_STATISTICS_CMD = 0x9c,
2522 * 3945 and 4965 identical.
2524 * This command triggers an immediate response containing uCode statistics.
2525 * The response is in the same format as STATISTICS_NOTIFICATION 0x9d, below.
2527 * If the CLEAR_STATS configuration flag is set, uCode will clear its
2528 * internal copy of the statistics (counters) after issuing the response.
2529 * This flag does not affect STATISTICS_NOTIFICATIONs after beacons (see below).
2531 * If the DISABLE_NOTIF configuration flag is set, uCode will not issue
2532 * STATISTICS_NOTIFICATIONs after received beacons (see below). This flag
2533 * does not affect the response to the REPLY_STATISTICS_CMD 0x9c itself.
2535 #define IWL_STATS_CONF_CLEAR_STATS __constant_cpu_to_le32(0x1) /* see above */
2536 #define IWL_STATS_CONF_DISABLE_NOTIF __constant_cpu_to_le32(0x2)/* see above */
2537 struct iwl_statistics_cmd {
2538 __le32 configuration_flags; /* IWL_STATS_CONF_* */
2539 } __attribute__ ((packed));
2542 * STATISTICS_NOTIFICATION = 0x9d (notification only, not a command)
2544 * By default, uCode issues this notification after receiving a beacon
2545 * while associated. To disable this behavior, set DISABLE_NOTIF flag in the
2546 * REPLY_STATISTICS_CMD 0x9c, above.
2548 * Statistics counters continue to increment beacon after beacon, but are
2549 * cleared when changing channels or when driver issues REPLY_STATISTICS_CMD
2550 * 0x9c with CLEAR_STATS bit set (see above).
2552 * uCode also issues this notification during scans. uCode clears statistics
2553 * appropriately so that each notification contains statistics for only the
2554 * one channel that has just been scanned.
2556 #define STATISTICS_REPLY_FLG_BAND_24G_MSK __constant_cpu_to_le32(0x2)
2557 #define STATISTICS_REPLY_FLG_FAT_MODE_MSK __constant_cpu_to_le32(0x8)
2558 struct iwl_notif_statistics {
2560 struct statistics_rx rx;
2561 struct statistics_tx tx;
2562 struct statistics_general general;
2563 } __attribute__ ((packed));
2567 * MISSED_BEACONS_NOTIFICATION = 0xa2 (notification only, not a command)
2569 /* if ucode missed CONSECUTIVE_MISSED_BCONS_TH beacons in a row,
2570 * then this notification will be sent. */
2571 #define CONSECUTIVE_MISSED_BCONS_TH 20
2573 struct iwl4965_missed_beacon_notif {
2574 __le32 consequtive_missed_beacons;
2575 __le32 total_missed_becons;
2576 __le32 num_expected_beacons;
2577 __le32 num_recvd_beacons;
2578 } __attribute__ ((packed));
2581 /******************************************************************************
2583 * Rx Calibration Commands:
2585 * With the uCode used for open source drivers, most Tx calibration (except
2586 * for Tx Power) and most Rx calibration is done by uCode during the
2587 * "initialize" phase of uCode boot. Driver must calibrate only:
2589 * 1) Tx power (depends on temperature), described elsewhere
2590 * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas)
2591 * 3) Receiver sensitivity (to optimize signal detection)
2593 *****************************************************************************/
2596 * SENSITIVITY_CMD = 0xa8 (command, has simple generic response)
2598 * This command sets up the Rx signal detector for a sensitivity level that
2599 * is high enough to lock onto all signals within the associated network,
2600 * but low enough to ignore signals that are below a certain threshold, so as
2601 * not to have too many "false alarms". False alarms are signals that the
2602 * Rx DSP tries to lock onto, but then discards after determining that they
2605 * The optimum number of false alarms is between 5 and 50 per 200 TUs
2606 * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e.
2607 * time listening, not transmitting). Driver must adjust sensitivity so that
2608 * the ratio of actual false alarms to actual Rx time falls within this range.
2610 * While associated, uCode delivers STATISTICS_NOTIFICATIONs after each
2611 * received beacon. These provide information to the driver to analyze the
2612 * sensitivity. Don't analyze statistics that come in from scanning, or any
2613 * other non-associated-network source. Pertinent statistics include:
2615 * From "general" statistics (struct statistics_rx_non_phy):
2617 * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level)
2618 * Measure of energy of desired signal. Used for establishing a level
2619 * below which the device does not detect signals.
2621 * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB)
2622 * Measure of background noise in silent period after beacon.
2625 * uSecs of actual Rx time during beacon period (varies according to
2626 * how much time was spent transmitting).
2628 * From "cck" and "ofdm" statistics (struct statistics_rx_phy), separately:
2631 * Signal locks abandoned early (before phy-level header).
2634 * Signal locks abandoned late (during phy-level header).
2636 * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from
2637 * beacon to beacon, i.e. each value is an accumulation of all errors
2638 * before and including the latest beacon. Values will wrap around to 0
2639 * after counting up to 2^32 - 1. Driver must differentiate vs.
2640 * previous beacon's values to determine # false alarms in the current
2643 * Total number of false alarms = false_alarms + plcp_errs
2645 * For OFDM, adjust the following table entries in struct iwl_sensitivity_cmd
2646 * (notice that the start points for OFDM are at or close to settings for
2647 * maximum sensitivity):
2650 * HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX 90 / 85 / 120
2651 * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX 170 / 170 / 210
2652 * HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX 105 / 105 / 140
2653 * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX 220 / 220 / 270
2655 * If actual rate of OFDM false alarms (+ plcp_errors) is too high
2656 * (greater than 50 for each 204.8 msecs listening), reduce sensitivity
2657 * by *adding* 1 to all 4 of the table entries above, up to the max for
2658 * each entry. Conversely, if false alarm rate is too low (less than 5
2659 * for each 204.8 msecs listening), *subtract* 1 from each entry to
2660 * increase sensitivity.
2662 * For CCK sensitivity, keep track of the following:
2664 * 1). 20-beacon history of maximum background noise, indicated by
2665 * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the
2666 * 3 receivers. For any given beacon, the "silence reference" is
2667 * the maximum of last 60 samples (20 beacons * 3 receivers).
2669 * 2). 10-beacon history of strongest signal level, as indicated
2670 * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers,
2671 * i.e. the strength of the signal through the best receiver at the
2672 * moment. These measurements are "upside down", with lower values
2673 * for stronger signals, so max energy will be *minimum* value.
2675 * Then for any given beacon, the driver must determine the *weakest*
2676 * of the strongest signals; this is the minimum level that needs to be
2677 * successfully detected, when using the best receiver at the moment.
2678 * "Max cck energy" is the maximum (higher value means lower energy!)
2679 * of the last 10 minima. Once this is determined, driver must add
2680 * a little margin by adding "6" to it.
2682 * 3). Number of consecutive beacon periods with too few false alarms.
2683 * Reset this to 0 at the first beacon period that falls within the
2684 * "good" range (5 to 50 false alarms per 204.8 milliseconds rx).
2686 * Then, adjust the following CCK table entries in struct iwl_sensitivity_cmd
2687 * (notice that the start points for CCK are at maximum sensitivity):
2690 * HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX 125 / 125 / 200
2691 * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX 200 / 200 / 400
2692 * HD_MIN_ENERGY_CCK_DET_INDEX 100 / 0 / 100
2694 * If actual rate of CCK false alarms (+ plcp_errors) is too high
2695 * (greater than 50 for each 204.8 msecs listening), method for reducing
2698 * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
2701 * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is < 160,
2702 * sensitivity has been reduced a significant amount; bring it up to
2703 * a moderate 161. Otherwise, *add* 3, up to max 200.
2705 * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is > 160,
2706 * sensitivity has been reduced only a moderate or small amount;
2707 * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_INDEX,
2708 * down to min 0. Otherwise (if gain has been significantly reduced),
2709 * don't change the HD_MIN_ENERGY_CCK_DET_INDEX value.
2711 * b) Save a snapshot of the "silence reference".
2713 * If actual rate of CCK false alarms (+ plcp_errors) is too low
2714 * (less than 5 for each 204.8 msecs listening), method for increasing
2715 * sensitivity is used only if:
2717 * 1a) Previous beacon did not have too many false alarms
2718 * 1b) AND difference between previous "silence reference" and current
2719 * "silence reference" (prev - current) is 2 or more,
2720 * OR 2) 100 or more consecutive beacon periods have had rate of
2721 * less than 5 false alarms per 204.8 milliseconds rx time.
2723 * Method for increasing sensitivity:
2725 * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX,
2728 * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
2731 * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_INDEX, up to max 100.
2733 * If actual rate of CCK false alarms (+ plcp_errors) is within good range
2734 * (between 5 and 50 for each 204.8 msecs listening):
2736 * 1) Save a snapshot of the silence reference.
2738 * 2) If previous beacon had too many CCK false alarms (+ plcp_errors),
2739 * give some extra margin to energy threshold by *subtracting* 8
2740 * from value in HD_MIN_ENERGY_CCK_DET_INDEX.
2742 * For all cases (too few, too many, good range), make sure that the CCK
2743 * detection threshold (energy) is below the energy level for robust
2744 * detection over the past 10 beacon periods, the "Max cck energy".
2745 * Lower values mean higher energy; this means making sure that the value
2746 * in HD_MIN_ENERGY_CCK_DET_INDEX is at or *above* "Max cck energy".
2748 * Driver should set the following entries to fixed values:
2750 * HD_MIN_ENERGY_OFDM_DET_INDEX 100
2751 * HD_BARKER_CORR_TH_ADD_MIN_INDEX 190
2752 * HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX 390
2753 * HD_OFDM_ENERGY_TH_IN_INDEX 62
2757 * Table entries in SENSITIVITY_CMD (struct iwl_sensitivity_cmd)
2759 #define HD_TABLE_SIZE (11) /* number of entries */
2760 #define HD_MIN_ENERGY_CCK_DET_INDEX (0) /* table indexes */
2761 #define HD_MIN_ENERGY_OFDM_DET_INDEX (1)
2762 #define HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX (2)
2763 #define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX (3)
2764 #define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX (4)
2765 #define HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX (5)
2766 #define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX (6)
2767 #define HD_BARKER_CORR_TH_ADD_MIN_INDEX (7)
2768 #define HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX (8)
2769 #define HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX (9)
2770 #define HD_OFDM_ENERGY_TH_IN_INDEX (10)
2772 /* Control field in struct iwl_sensitivity_cmd */
2773 #define SENSITIVITY_CMD_CONTROL_DEFAULT_TABLE __constant_cpu_to_le16(0)
2774 #define SENSITIVITY_CMD_CONTROL_WORK_TABLE __constant_cpu_to_le16(1)
2777 * struct iwl_sensitivity_cmd
2778 * @control: (1) updates working table, (0) updates default table
2779 * @table: energy threshold values, use HD_* as index into table
2781 * Always use "1" in "control" to update uCode's working table and DSP.
2783 struct iwl_sensitivity_cmd {
2784 __le16 control; /* always use "1" */
2785 __le16 table[HD_TABLE_SIZE]; /* use HD_* as index */
2786 } __attribute__ ((packed));
2790 * REPLY_PHY_CALIBRATION_CMD = 0xb0 (command, has simple generic response)
2792 * This command sets the relative gains of 4965's 3 radio receiver chains.
2794 * After the first association, driver should accumulate signal and noise
2795 * statistics from the STATISTICS_NOTIFICATIONs that follow the first 20
2796 * beacons from the associated network (don't collect statistics that come
2797 * in from scanning, or any other non-network source).
2799 * DISCONNECTED ANTENNA:
2801 * Driver should determine which antennas are actually connected, by comparing
2802 * average beacon signal levels for the 3 Rx chains. Accumulate (add) the
2803 * following values over 20 beacons, one accumulator for each of the chains
2804 * a/b/c, from struct statistics_rx_non_phy:
2806 * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB)
2808 * Find the strongest signal from among a/b/c. Compare the other two to the
2809 * strongest. If any signal is more than 15 dB (times 20, unless you
2810 * divide the accumulated values by 20) below the strongest, the driver
2811 * considers that antenna to be disconnected, and should not try to use that
2812 * antenna/chain for Rx or Tx. If both A and B seem to be disconnected,
2813 * driver should declare the stronger one as connected, and attempt to use it
2814 * (A and B are the only 2 Tx chains!).
2819 * Driver should balance the 3 receivers (but just the ones that are connected
2820 * to antennas, see above) for gain, by comparing the average signal levels
2821 * detected during the silence after each beacon (background noise).
2822 * Accumulate (add) the following values over 20 beacons, one accumulator for
2823 * each of the chains a/b/c, from struct statistics_rx_non_phy:
2825 * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB)
2827 * Find the weakest background noise level from among a/b/c. This Rx chain
2828 * will be the reference, with 0 gain adjustment. Attenuate other channels by
2829 * finding noise difference:
2831 * (accum_noise[i] - accum_noise[reference]) / 30
2833 * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB.
2834 * For use in diff_gain_[abc] fields of struct iwl_calibration_cmd, the
2835 * driver should limit the difference results to a range of 0-3 (0-4.5 dB),
2836 * and set bit 2 to indicate "reduce gain". The value for the reference
2837 * (weakest) chain should be "0".
2839 * diff_gain_[abc] bit fields:
2840 * 2: (1) reduce gain, (0) increase gain
2841 * 1-0: amount of gain, units of 1.5 dB
2844 /* "Differential Gain" opcode used in REPLY_PHY_CALIBRATION_CMD. */
2845 #define PHY_CALIBRATE_DIFF_GAIN_CMD (7)
2847 struct iwl4965_calibration_cmd {
2848 u8 opCode; /* PHY_CALIBRATE_DIFF_GAIN_CMD (7) */
2849 u8 flags; /* not used */
2851 s8 diff_gain_a; /* see above */
2855 } __attribute__ ((packed));
2857 /* Phy calibration command for 5000 series */
2860 IWL5000_PHY_CALIBRATE_DC_CMD = 8,
2861 IWL5000_PHY_CALIBRATE_LO_CMD = 9,
2862 IWL5000_PHY_CALIBRATE_RX_BB_CMD = 10,
2863 IWL5000_PHY_CALIBRATE_TX_IQ_CMD = 11,
2864 IWL5000_PHY_CALIBRATE_RX_IQ_CMD = 12,
2865 IWL5000_PHY_CALIBRATION_NOISE_CMD = 13,
2866 IWL5000_PHY_CALIBRATE_AGC_TABLE_CMD = 14,
2867 IWL5000_PHY_CALIBRATE_CRYSTAL_FRQ_CMD = 15,
2868 IWL5000_PHY_CALIBRATE_BASE_BAND_CMD = 16,
2869 IWL5000_PHY_CALIBRATE_TX_IQ_PERD_CMD = 17,
2870 IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD = 18,
2871 IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD = 19,
2875 CALIBRATION_CFG_CMD = 0x65,
2876 CALIBRATION_RES_NOTIFICATION = 0x66,
2877 CALIBRATION_COMPLETE_NOTIFICATION = 0x67
2880 struct iwl_cal_crystal_freq_cmd {
2883 } __attribute__ ((packed));
2885 struct iwl5000_calibration {
2890 struct iwl_cal_crystal_freq_cmd data;
2891 } __attribute__ ((packed));
2893 #define IWL_CALIB_INIT_CFG_ALL __constant_cpu_to_le32(0xffffffff)
2895 struct iwl_calib_cfg_elmnt_s {
2901 } __attribute__ ((packed));
2903 struct iwl_calib_cfg_status_s {
2904 struct iwl_calib_cfg_elmnt_s once;
2905 struct iwl_calib_cfg_elmnt_s perd;
2907 } __attribute__ ((packed));
2909 struct iwl5000_calib_cfg_cmd {
2910 struct iwl_calib_cfg_status_s ucd_calib_cfg;
2911 struct iwl_calib_cfg_status_s drv_calib_cfg;
2913 } __attribute__ ((packed));
2915 struct iwl5000_calib_hdr {
2920 } __attribute__ ((packed));
2922 struct iwl5000_calibration_chain_noise_reset_cmd {
2923 u8 op_code; /* IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD */
2924 u8 flags; /* not used */
2926 } __attribute__ ((packed));
2928 struct iwl5000_calibration_chain_noise_gain_cmd {
2929 u8 op_code; /* IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD */
2930 u8 flags; /* not used */
2935 } __attribute__ ((packed));
2937 /******************************************************************************
2939 * Miscellaneous Commands:
2941 *****************************************************************************/
2944 * LEDs Command & Response
2945 * REPLY_LEDS_CMD = 0x48 (command, has simple generic response)
2947 * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field),
2948 * this command turns it on or off, or sets up a periodic blinking cycle.
2950 struct iwl_led_cmd {
2951 __le32 interval; /* "interval" in uSec */
2952 u8 id; /* 1: Activity, 2: Link, 3: Tech */
2953 u8 off; /* # intervals off while blinking;
2954 * "0", with >0 "on" value, turns LED on */
2955 u8 on; /* # intervals on while blinking;
2956 * "0", regardless of "off", turns LED off */
2958 } __attribute__ ((packed));
2961 * Coexistence WIFI/WIMAX Command
2962 * COEX_PRIORITY_TABLE_CMD = 0x5a
2966 COEX_UNASSOC_IDLE = 0,
2967 COEX_UNASSOC_MANUAL_SCAN = 1,
2968 COEX_UNASSOC_AUTO_SCAN = 2,
2969 COEX_CALIBRATION = 3,
2970 COEX_PERIODIC_CALIBRATION = 4,
2971 COEX_CONNECTION_ESTAB = 5,
2972 COEX_ASSOCIATED_IDLE = 6,
2973 COEX_ASSOC_MANUAL_SCAN = 7,
2974 COEX_ASSOC_AUTO_SCAN = 8,
2975 COEX_ASSOC_ACTIVE_LEVEL = 9,
2978 COEX_STAND_ALONE_DEBUG = 12,
2979 COEX_IPAN_ASSOC_LEVEL = 13,
2982 COEX_NUM_OF_EVENTS = 16
2985 struct iwl_wimax_coex_event_entry {
2990 } __attribute__ ((packed));
2992 /* COEX flag masks */
2994 /* Staion table is valid */
2995 #define COEX_FLAGS_STA_TABLE_VALID_MSK (0x1)
2996 /* UnMask wakeup src at unassociated sleep */
2997 #define COEX_FLAGS_UNASSOC_WA_UNMASK_MSK (0x4)
2998 /* UnMask wakeup src at associated sleep */
2999 #define COEX_FLAGS_ASSOC_WA_UNMASK_MSK (0x8)
3000 /* Enable CoEx feature. */
3001 #define COEX_FLAGS_COEX_ENABLE_MSK (0x80)
3003 struct iwl_wimax_coex_cmd {
3006 struct iwl_wimax_coex_event_entry sta_prio[COEX_NUM_OF_EVENTS];
3007 } __attribute__ ((packed));
3009 /******************************************************************************
3011 * Union of all expected notifications/responses:
3013 *****************************************************************************/
3015 struct iwl_rx_packet {
3017 struct iwl_cmd_header hdr;
3019 struct iwl_alive_resp alive_frame;
3020 struct iwl4965_rx_frame rx_frame;
3021 struct iwl4965_tx_resp tx_resp;
3022 struct iwl4965_spectrum_notification spectrum_notif;
3023 struct iwl4965_csa_notification csa_notif;
3024 struct iwl_error_resp err_resp;
3025 struct iwl4965_card_state_notif card_state_notif;
3026 struct iwl4965_beacon_notif beacon_status;
3027 struct iwl_add_sta_resp add_sta;
3028 struct iwl_rem_sta_resp rem_sta;
3029 struct iwl4965_sleep_notification sleep_notif;
3030 struct iwl4965_spectrum_resp spectrum;
3031 struct iwl_notif_statistics stats;
3032 struct iwl_compressed_ba_resp compressed_ba;
3033 struct iwl4965_missed_beacon_notif missed_beacon;
3034 struct iwl5000_calibration calib;
3038 } __attribute__ ((packed));
3040 #define IWL_RX_FRAME_SIZE (4 + sizeof(struct iwl4965_rx_frame))
3042 #endif /* __iwl4965_commands_h__ */