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authorTomas Winkler <tomas.winkler@intel.com>2008-04-24 14:55:37 -0400
committerJohn W. Linville <linville@tuxdriver.com>2008-05-07 15:02:26 -0400
commit5a36ba0e412a0e12a8bf2648a075226c1dd7870d (patch)
tree6dacb9e430ea4ae13125cf9db0abb0429f609b23 /drivers/net/wireless/iwlwifi/iwl-commands.h
parente86fe9f64d7cc3da9f445f3d0a2c5fd265fcd445 (diff)
iwlwifi: rename iwl-4965-commands to iwl-commands.h
This patch renames iwl-4965-commands to iwl-commands.h Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-commands.h')
-rw-r--r--drivers/net/wireless/iwlwifi/iwl-commands.h2759
1 files changed, 2759 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
new file mode 100644
index 000000000000..25950551b1bb
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -0,0 +1,2759 @@
1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
25 * in the file called LICENSE.GPL.
26 *
27 * Contact Information:
28 * James P. Ketrenos <ipw2100-admin@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
33 * Copyright(c) 2005 - 2008 Intel Corporation. All rights reserved.
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63/*
64 * Please use this file (iwl-commands.h) only for uCode API definitions.
65 * Please use iwl-4965-hw.h for hardware-related definitions.
66 * Please use iwl-4965.h for driver implementation definitions.
67 */
68
69#ifndef __iwl4965_commands_h__
70#define __iwl4965_commands_h__
71
72enum {
73 REPLY_ALIVE = 0x1,
74 REPLY_ERROR = 0x2,
75
76 /* RXON and QOS commands */
77 REPLY_RXON = 0x10,
78 REPLY_RXON_ASSOC = 0x11,
79 REPLY_QOS_PARAM = 0x13,
80 REPLY_RXON_TIMING = 0x14,
81
82 /* Multi-Station support */
83 REPLY_ADD_STA = 0x18,
84 REPLY_REMOVE_STA = 0x19, /* not used */
85 REPLY_REMOVE_ALL_STA = 0x1a, /* not used */
86
87 /* Security */
88 REPLY_WEPKEY = 0x20,
89
90 /* RX, TX, LEDs */
91 REPLY_TX = 0x1c,
92 REPLY_RATE_SCALE = 0x47, /* 3945 only */
93 REPLY_LEDS_CMD = 0x48,
94 REPLY_TX_LINK_QUALITY_CMD = 0x4e, /* 4965 only */
95
96 /* 802.11h related */
97 RADAR_NOTIFICATION = 0x70, /* not used */
98 REPLY_QUIET_CMD = 0x71, /* not used */
99 REPLY_CHANNEL_SWITCH = 0x72,
100 CHANNEL_SWITCH_NOTIFICATION = 0x73,
101 REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74,
102 SPECTRUM_MEASURE_NOTIFICATION = 0x75,
103
104 /* Power Management */
105 POWER_TABLE_CMD = 0x77,
106 PM_SLEEP_NOTIFICATION = 0x7A,
107 PM_DEBUG_STATISTIC_NOTIFIC = 0x7B,
108
109 /* Scan commands and notifications */
110 REPLY_SCAN_CMD = 0x80,
111 REPLY_SCAN_ABORT_CMD = 0x81,
112 SCAN_START_NOTIFICATION = 0x82,
113 SCAN_RESULTS_NOTIFICATION = 0x83,
114 SCAN_COMPLETE_NOTIFICATION = 0x84,
115
116 /* IBSS/AP commands */
117 BEACON_NOTIFICATION = 0x90,
118 REPLY_TX_BEACON = 0x91,
119 WHO_IS_AWAKE_NOTIFICATION = 0x94, /* not used */
120
121 /* Miscellaneous commands */
122 QUIET_NOTIFICATION = 0x96, /* not used */
123 REPLY_TX_PWR_TABLE_CMD = 0x97,
124 MEASURE_ABORT_NOTIFICATION = 0x99, /* not used */
125
126 /* Bluetooth device coexistance config command */
127 REPLY_BT_CONFIG = 0x9b,
128
129 /* Statistics */
130 REPLY_STATISTICS_CMD = 0x9c,
131 STATISTICS_NOTIFICATION = 0x9d,
132
133 /* RF-KILL commands and notifications */
134 REPLY_CARD_STATE_CMD = 0xa0,
135 CARD_STATE_NOTIFICATION = 0xa1,
136
137 /* Missed beacons notification */
138 MISSED_BEACONS_NOTIFICATION = 0xa2,
139
140 REPLY_CT_KILL_CONFIG_CMD = 0xa4,
141 SENSITIVITY_CMD = 0xa8,
142 REPLY_PHY_CALIBRATION_CMD = 0xb0,
143 REPLY_RX_PHY_CMD = 0xc0,
144 REPLY_RX_MPDU_CMD = 0xc1,
145 REPLY_RX = 0xc3,
146 REPLY_COMPRESSED_BA = 0xc5,
147 REPLY_MAX = 0xff
148};
149
150/******************************************************************************
151 * (0)
152 * Commonly used structures and definitions:
153 * Command header, rate_n_flags, txpower
154 *
155 *****************************************************************************/
156
157/* iwl_cmd_header flags value */
158#define IWL_CMD_FAILED_MSK 0x40
159
160/**
161 * struct iwl_cmd_header
162 *
163 * This header format appears in the beginning of each command sent from the
164 * driver, and each response/notification received from uCode.
165 */
166struct iwl_cmd_header {
167 u8 cmd; /* Command ID: REPLY_RXON, etc. */
168 u8 flags; /* IWL_CMD_* */
169 /*
170 * The driver sets up the sequence number to values of its chosing.
171 * uCode does not use this value, but passes it back to the driver
172 * when sending the response to each driver-originated command, so
173 * the driver can match the response to the command. Since the values
174 * don't get used by uCode, the driver may set up an arbitrary format.
175 *
176 * There is one exception: uCode sets bit 15 when it originates
177 * the response/notification, i.e. when the response/notification
178 * is not a direct response to a command sent by the driver. For
179 * example, uCode issues REPLY_3945_RX when it sends a received frame
180 * to the driver; it is not a direct response to any driver command.
181 *
182 * The Linux driver uses the following format:
183 *
184 * 0:7 index/position within Tx queue
185 * 8:13 Tx queue selection
186 * 14:14 driver sets this to indicate command is in the 'huge'
187 * storage at the end of the command buffers, i.e. scan cmd
188 * 15:15 uCode sets this in uCode-originated response/notification
189 */
190 __le16 sequence;
191
192 /* command or response/notification data follows immediately */
193 u8 data[0];
194} __attribute__ ((packed));
195
196/**
197 * 4965 rate_n_flags bit fields
198 *
199 * rate_n_flags format is used in following 4965 commands:
200 * REPLY_RX (response only)
201 * REPLY_TX (both command and response)
202 * REPLY_TX_LINK_QUALITY_CMD
203 *
204 * High-throughput (HT) rate format for bits 7:0 (bit 8 must be "1"):
205 * 2-0: 0) 6 Mbps
206 * 1) 12 Mbps
207 * 2) 18 Mbps
208 * 3) 24 Mbps
209 * 4) 36 Mbps
210 * 5) 48 Mbps
211 * 6) 54 Mbps
212 * 7) 60 Mbps
213 *
214 * 3: 0) Single stream (SISO)
215 * 1) Dual stream (MIMO)
216 *
217 * 5: Value of 0x20 in bits 7:0 indicates 6 Mbps FAT duplicate data
218 *
219 * Legacy OFDM rate format for bits 7:0 (bit 8 must be "0", bit 9 "0"):
220 * 3-0: 0xD) 6 Mbps
221 * 0xF) 9 Mbps
222 * 0x5) 12 Mbps
223 * 0x7) 18 Mbps
224 * 0x9) 24 Mbps
225 * 0xB) 36 Mbps
226 * 0x1) 48 Mbps
227 * 0x3) 54 Mbps
228 *
229 * Legacy CCK rate format for bits 7:0 (bit 8 must be "0", bit 9 "1"):
230 * 3-0: 10) 1 Mbps
231 * 20) 2 Mbps
232 * 55) 5.5 Mbps
233 * 110) 11 Mbps
234 */
235#define RATE_MCS_CODE_MSK 0x7
236#define RATE_MCS_MIMO_POS 3
237#define RATE_MCS_MIMO_MSK 0x8
238#define RATE_MCS_HT_DUP_POS 5
239#define RATE_MCS_HT_DUP_MSK 0x20
240
241/* Bit 8: (1) HT format, (0) legacy format in bits 7:0 */
242#define RATE_MCS_FLAGS_POS 8
243#define RATE_MCS_HT_POS 8
244#define RATE_MCS_HT_MSK 0x100
245
246/* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
247#define RATE_MCS_CCK_POS 9
248#define RATE_MCS_CCK_MSK 0x200
249
250/* Bit 10: (1) Use Green Field preamble */
251#define RATE_MCS_GF_POS 10
252#define RATE_MCS_GF_MSK 0x400
253
254/* Bit 11: (1) Use 40Mhz FAT chnl width, (0) use 20 MHz legacy chnl width */
255#define RATE_MCS_FAT_POS 11
256#define RATE_MCS_FAT_MSK 0x800
257
258/* Bit 12: (1) Duplicate data on both 20MHz chnls. FAT (bit 11) must be set. */
259#define RATE_MCS_DUP_POS 12
260#define RATE_MCS_DUP_MSK 0x1000
261
262/* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
263#define RATE_MCS_SGI_POS 13
264#define RATE_MCS_SGI_MSK 0x2000
265
266/**
267 * rate_n_flags Tx antenna masks (4965 has 2 transmitters):
268 * bit14:15 01 B inactive, A active
269 * 10 B active, A inactive
270 * 11 Both active
271 */
272#define RATE_MCS_ANT_POS 14
273#define RATE_MCS_ANT_A_MSK 0x04000
274#define RATE_MCS_ANT_B_MSK 0x08000
275#define RATE_MCS_ANT_C_MSK 0x10000
276#define RATE_MCS_ANT_ABC_MSK 0x1C000
277
278
279/**
280 * struct iwl4965_tx_power - txpower format used in REPLY_SCAN_CMD
281 *
282 * Scan uses only one transmitter, so only one analog/dsp gain pair is needed.
283 */
284struct iwl4965_tx_power {
285 u8 tx_gain; /* gain for analog radio */
286 u8 dsp_atten; /* gain for DSP */
287} __attribute__ ((packed));
288
289#define POWER_TABLE_NUM_ENTRIES 33
290#define POWER_TABLE_NUM_HT_OFDM_ENTRIES 32
291#define POWER_TABLE_CCK_ENTRY 32
292
293/**
294 * union iwl4965_tx_power_dual_stream
295 *
296 * Host format used for REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
297 * Use __le32 version (struct tx_power_dual_stream) when building command.
298 *
299 * Driver provides radio gain and DSP attenuation settings to device in pairs,
300 * one value for each transmitter chain. The first value is for transmitter A,
301 * second for transmitter B.
302 *
303 * For SISO bit rates, both values in a pair should be identical.
304 * For MIMO rates, one value may be different from the other,
305 * in order to balance the Tx output between the two transmitters.
306 *
307 * See more details in doc for TXPOWER in iwl-4965-hw.h.
308 */
309union iwl4965_tx_power_dual_stream {
310 struct {
311 u8 radio_tx_gain[2];
312 u8 dsp_predis_atten[2];
313 } s;
314 u32 dw;
315};
316
317/**
318 * struct tx_power_dual_stream
319 *
320 * Table entries in REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
321 *
322 * Same format as iwl_tx_power_dual_stream, but __le32
323 */
324struct tx_power_dual_stream {
325 __le32 dw;
326} __attribute__ ((packed));
327
328/**
329 * struct iwl4965_tx_power_db
330 *
331 * Entire table within REPLY_TX_PWR_TABLE_CMD, REPLY_CHANNEL_SWITCH
332 */
333struct iwl4965_tx_power_db {
334 struct tx_power_dual_stream power_tbl[POWER_TABLE_NUM_ENTRIES];
335} __attribute__ ((packed));
336
337
338/******************************************************************************
339 * (0a)
340 * Alive and Error Commands & Responses:
341 *
342 *****************************************************************************/
343
344#define UCODE_VALID_OK __constant_cpu_to_le32(0x1)
345#define INITIALIZE_SUBTYPE (9)
346
347/*
348 * ("Initialize") REPLY_ALIVE = 0x1 (response only, not a command)
349 *
350 * uCode issues this "initialize alive" notification once the initialization
351 * uCode image has completed its work, and is ready to load the runtime image.
352 * This is the *first* "alive" notification that the driver will receive after
353 * rebooting uCode; the "initialize" alive is indicated by subtype field == 9.
354 *
355 * See comments documenting "BSM" (bootstrap state machine).
356 *
357 * For 4965, this notification contains important calibration data for
358 * calculating txpower settings:
359 *
360 * 1) Power supply voltage indication. The voltage sensor outputs higher
361 * values for lower voltage, and vice versa.
362 *
363 * 2) Temperature measurement parameters, for each of two channel widths
364 * (20 MHz and 40 MHz) supported by the radios. Temperature sensing
365 * is done via one of the receiver chains, and channel width influences
366 * the results.
367 *
368 * 3) Tx gain compensation to balance 4965's 2 Tx chains for MIMO operation,
369 * for each of 5 frequency ranges.
370 */
371struct iwl4965_init_alive_resp {
372 u8 ucode_minor;
373 u8 ucode_major;
374 __le16 reserved1;
375 u8 sw_rev[8];
376 u8 ver_type;
377 u8 ver_subtype; /* "9" for initialize alive */
378 __le16 reserved2;
379 __le32 log_event_table_ptr;
380 __le32 error_event_table_ptr;
381 __le32 timestamp;
382 __le32 is_valid;
383
384 /* calibration values from "initialize" uCode */
385 __le32 voltage; /* signed, higher value is lower voltage */
386 __le32 therm_r1[2]; /* signed, 1st for normal, 2nd for FAT channel*/
387 __le32 therm_r2[2]; /* signed */
388 __le32 therm_r3[2]; /* signed */
389 __le32 therm_r4[2]; /* signed */
390 __le32 tx_atten[5][2]; /* signed MIMO gain comp, 5 freq groups,
391 * 2 Tx chains */
392} __attribute__ ((packed));
393
394
395/**
396 * REPLY_ALIVE = 0x1 (response only, not a command)
397 *
398 * uCode issues this "alive" notification once the runtime image is ready
399 * to receive commands from the driver. This is the *second* "alive"
400 * notification that the driver will receive after rebooting uCode;
401 * this "alive" is indicated by subtype field != 9.
402 *
403 * See comments documenting "BSM" (bootstrap state machine).
404 *
405 * This response includes two pointers to structures within the device's
406 * data SRAM (access via HBUS_TARG_MEM_* regs) that are useful for debugging:
407 *
408 * 1) log_event_table_ptr indicates base of the event log. This traces
409 * a 256-entry history of uCode execution within a circular buffer.
410 * Its header format is:
411 *
412 * __le32 log_size; log capacity (in number of entries)
413 * __le32 type; (1) timestamp with each entry, (0) no timestamp
414 * __le32 wraps; # times uCode has wrapped to top of circular buffer
415 * __le32 write_index; next circular buffer entry that uCode would fill
416 *
417 * The header is followed by the circular buffer of log entries. Entries
418 * with timestamps have the following format:
419 *
420 * __le32 event_id; range 0 - 1500
421 * __le32 timestamp; low 32 bits of TSF (of network, if associated)
422 * __le32 data; event_id-specific data value
423 *
424 * Entries without timestamps contain only event_id and data.
425 *
426 * 2) error_event_table_ptr indicates base of the error log. This contains
427 * information about any uCode error that occurs. For 4965, the format
428 * of the error log is:
429 *
430 * __le32 valid; (nonzero) valid, (0) log is empty
431 * __le32 error_id; type of error
432 * __le32 pc; program counter
433 * __le32 blink1; branch link
434 * __le32 blink2; branch link
435 * __le32 ilink1; interrupt link
436 * __le32 ilink2; interrupt link
437 * __le32 data1; error-specific data
438 * __le32 data2; error-specific data
439 * __le32 line; source code line of error
440 * __le32 bcon_time; beacon timer
441 * __le32 tsf_low; network timestamp function timer
442 * __le32 tsf_hi; network timestamp function timer
443 *
444 * The Linux driver can print both logs to the system log when a uCode error
445 * occurs.
446 */
447struct iwl4965_alive_resp {
448 u8 ucode_minor;
449 u8 ucode_major;
450 __le16 reserved1;
451 u8 sw_rev[8];
452 u8 ver_type;
453 u8 ver_subtype; /* not "9" for runtime alive */
454 __le16 reserved2;
455 __le32 log_event_table_ptr; /* SRAM address for event log */
456 __le32 error_event_table_ptr; /* SRAM address for error log */
457 __le32 timestamp;
458 __le32 is_valid;
459} __attribute__ ((packed));
460
461
462union tsf {
463 u8 byte[8];
464 __le16 word[4];
465 __le32 dw[2];
466};
467
468/*
469 * REPLY_ERROR = 0x2 (response only, not a command)
470 */
471struct iwl4965_error_resp {
472 __le32 error_type;
473 u8 cmd_id;
474 u8 reserved1;
475 __le16 bad_cmd_seq_num;
476 __le32 error_info;
477 union tsf timestamp;
478} __attribute__ ((packed));
479
480/******************************************************************************
481 * (1)
482 * RXON Commands & Responses:
483 *
484 *****************************************************************************/
485
486/*
487 * Rx config defines & structure
488 */
489/* rx_config device types */
490enum {
491 RXON_DEV_TYPE_AP = 1,
492 RXON_DEV_TYPE_ESS = 3,
493 RXON_DEV_TYPE_IBSS = 4,
494 RXON_DEV_TYPE_SNIFFER = 6,
495};
496
497
498#define RXON_RX_CHAIN_DRIVER_FORCE_MSK __constant_cpu_to_le16(0x1 << 0)
499#define RXON_RX_CHAIN_VALID_MSK __constant_cpu_to_le16(0x7 << 1)
500#define RXON_RX_CHAIN_VALID_POS (1)
501#define RXON_RX_CHAIN_FORCE_SEL_MSK __constant_cpu_to_le16(0x7 << 4)
502#define RXON_RX_CHAIN_FORCE_SEL_POS (4)
503#define RXON_RX_CHAIN_FORCE_MIMO_SEL_MSK __constant_cpu_to_le16(0x7 << 7)
504#define RXON_RX_CHAIN_FORCE_MIMO_SEL_POS (7)
505#define RXON_RX_CHAIN_CNT_MSK __constant_cpu_to_le16(0x3 << 10)
506#define RXON_RX_CHAIN_CNT_POS (10)
507#define RXON_RX_CHAIN_MIMO_CNT_MSK __constant_cpu_to_le16(0x3 << 12)
508#define RXON_RX_CHAIN_MIMO_CNT_POS (12)
509#define RXON_RX_CHAIN_MIMO_FORCE_MSK __constant_cpu_to_le16(0x1 << 14)
510#define RXON_RX_CHAIN_MIMO_FORCE_POS (14)
511
512/* rx_config flags */
513/* band & modulation selection */
514#define RXON_FLG_BAND_24G_MSK __constant_cpu_to_le32(1 << 0)
515#define RXON_FLG_CCK_MSK __constant_cpu_to_le32(1 << 1)
516/* auto detection enable */
517#define RXON_FLG_AUTO_DETECT_MSK __constant_cpu_to_le32(1 << 2)
518/* TGg protection when tx */
519#define RXON_FLG_TGG_PROTECT_MSK __constant_cpu_to_le32(1 << 3)
520/* cck short slot & preamble */
521#define RXON_FLG_SHORT_SLOT_MSK __constant_cpu_to_le32(1 << 4)
522#define RXON_FLG_SHORT_PREAMBLE_MSK __constant_cpu_to_le32(1 << 5)
523/* antenna selection */
524#define RXON_FLG_DIS_DIV_MSK __constant_cpu_to_le32(1 << 7)
525#define RXON_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0x0f00)
526#define RXON_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
527#define RXON_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
528/* radar detection enable */
529#define RXON_FLG_RADAR_DETECT_MSK __constant_cpu_to_le32(1 << 12)
530#define RXON_FLG_TGJ_NARROW_BAND_MSK __constant_cpu_to_le32(1 << 13)
531/* rx response to host with 8-byte TSF
532* (according to ON_AIR deassertion) */
533#define RXON_FLG_TSF2HOST_MSK __constant_cpu_to_le32(1 << 15)
534
535
536/* HT flags */
537#define RXON_FLG_CTRL_CHANNEL_LOC_POS (22)
538#define RXON_FLG_CTRL_CHANNEL_LOC_HI_MSK __constant_cpu_to_le32(0x1 << 22)
539
540#define RXON_FLG_HT_OPERATING_MODE_POS (23)
541
542#define RXON_FLG_HT_PROT_MSK __constant_cpu_to_le32(0x1 << 23)
543#define RXON_FLG_FAT_PROT_MSK __constant_cpu_to_le32(0x2 << 23)
544
545#define RXON_FLG_CHANNEL_MODE_POS (25)
546#define RXON_FLG_CHANNEL_MODE_MSK __constant_cpu_to_le32(0x3 << 25)
547#define RXON_FLG_CHANNEL_MODE_PURE_40_MSK __constant_cpu_to_le32(0x1 << 25)
548#define RXON_FLG_CHANNEL_MODE_MIXED_MSK __constant_cpu_to_le32(0x2 << 25)
549
550/* rx_config filter flags */
551/* accept all data frames */
552#define RXON_FILTER_PROMISC_MSK __constant_cpu_to_le32(1 << 0)
553/* pass control & management to host */
554#define RXON_FILTER_CTL2HOST_MSK __constant_cpu_to_le32(1 << 1)
555/* accept multi-cast */
556#define RXON_FILTER_ACCEPT_GRP_MSK __constant_cpu_to_le32(1 << 2)
557/* don't decrypt uni-cast frames */
558#define RXON_FILTER_DIS_DECRYPT_MSK __constant_cpu_to_le32(1 << 3)
559/* don't decrypt multi-cast frames */
560#define RXON_FILTER_DIS_GRP_DECRYPT_MSK __constant_cpu_to_le32(1 << 4)
561/* STA is associated */
562#define RXON_FILTER_ASSOC_MSK __constant_cpu_to_le32(1 << 5)
563/* transfer to host non bssid beacons in associated state */
564#define RXON_FILTER_BCON_AWARE_MSK __constant_cpu_to_le32(1 << 6)
565
566/**
567 * REPLY_RXON = 0x10 (command, has simple generic response)
568 *
569 * RXON tunes the radio tuner to a service channel, and sets up a number
570 * of parameters that are used primarily for Rx, but also for Tx operations.
571 *
572 * NOTE: When tuning to a new channel, driver must set the
573 * RXON_FILTER_ASSOC_MSK to 0. This will clear station-dependent
574 * info within the device, including the station tables, tx retry
575 * rate tables, and txpower tables. Driver must build a new station
576 * table and txpower table before transmitting anything on the RXON
577 * channel.
578 *
579 * NOTE: All RXONs wipe clean the internal txpower table. Driver must
580 * issue a new REPLY_TX_PWR_TABLE_CMD after each REPLY_RXON (0x10),
581 * regardless of whether RXON_FILTER_ASSOC_MSK is set.
582 */
583struct iwl4965_rxon_cmd {
584 u8 node_addr[6];
585 __le16 reserved1;
586 u8 bssid_addr[6];
587 __le16 reserved2;
588 u8 wlap_bssid_addr[6];
589 __le16 reserved3;
590 u8 dev_type;
591 u8 air_propagation;
592 __le16 rx_chain;
593 u8 ofdm_basic_rates;
594 u8 cck_basic_rates;
595 __le16 assoc_id;
596 __le32 flags;
597 __le32 filter_flags;
598 __le16 channel;
599 u8 ofdm_ht_single_stream_basic_rates;
600 u8 ofdm_ht_dual_stream_basic_rates;
601} __attribute__ ((packed));
602
603/*
604 * REPLY_RXON_ASSOC = 0x11 (command, has simple generic response)
605 */
606struct iwl4965_rxon_assoc_cmd {
607 __le32 flags;
608 __le32 filter_flags;
609 u8 ofdm_basic_rates;
610 u8 cck_basic_rates;
611 u8 ofdm_ht_single_stream_basic_rates;
612 u8 ofdm_ht_dual_stream_basic_rates;
613 __le16 rx_chain_select_flags;
614 __le16 reserved;
615} __attribute__ ((packed));
616
617/*
618 * REPLY_RXON_TIMING = 0x14 (command, has simple generic response)
619 */
620struct iwl4965_rxon_time_cmd {
621 union tsf timestamp;
622 __le16 beacon_interval;
623 __le16 atim_window;
624 __le32 beacon_init_val;
625 __le16 listen_interval;
626 __le16 reserved;
627} __attribute__ ((packed));
628
629/*
630 * REPLY_CHANNEL_SWITCH = 0x72 (command, has simple generic response)
631 */
632struct iwl4965_channel_switch_cmd {
633 u8 band;
634 u8 expect_beacon;
635 __le16 channel;
636 __le32 rxon_flags;
637 __le32 rxon_filter_flags;
638 __le32 switch_time;
639 struct iwl4965_tx_power_db tx_power;
640} __attribute__ ((packed));
641
642/*
643 * CHANNEL_SWITCH_NOTIFICATION = 0x73 (notification only, not a command)
644 */
645struct iwl4965_csa_notification {
646 __le16 band;
647 __le16 channel;
648 __le32 status; /* 0 - OK, 1 - fail */
649} __attribute__ ((packed));
650
651/******************************************************************************
652 * (2)
653 * Quality-of-Service (QOS) Commands & Responses:
654 *
655 *****************************************************************************/
656
657/**
658 * struct iwl_ac_qos -- QOS timing params for REPLY_QOS_PARAM
659 * One for each of 4 EDCA access categories in struct iwl_qosparam_cmd
660 *
661 * @cw_min: Contention window, start value in numbers of slots.
662 * Should be a power-of-2, minus 1. Device's default is 0x0f.
663 * @cw_max: Contention window, max value in numbers of slots.
664 * Should be a power-of-2, minus 1. Device's default is 0x3f.
665 * @aifsn: Number of slots in Arbitration Interframe Space (before
666 * performing random backoff timing prior to Tx). Device default 1.
667 * @edca_txop: Length of Tx opportunity, in uSecs. Device default is 0.
668 *
669 * Device will automatically increase contention window by (2*CW) + 1 for each
670 * transmission retry. Device uses cw_max as a bit mask, ANDed with new CW
671 * value, to cap the CW value.
672 */
673struct iwl4965_ac_qos {
674 __le16 cw_min;
675 __le16 cw_max;
676 u8 aifsn;
677 u8 reserved1;
678 __le16 edca_txop;
679} __attribute__ ((packed));
680
681/* QoS flags defines */
682#define QOS_PARAM_FLG_UPDATE_EDCA_MSK __constant_cpu_to_le32(0x01)
683#define QOS_PARAM_FLG_TGN_MSK __constant_cpu_to_le32(0x02)
684#define QOS_PARAM_FLG_TXOP_TYPE_MSK __constant_cpu_to_le32(0x10)
685
686/* Number of Access Categories (AC) (EDCA), queues 0..3 */
687#define AC_NUM 4
688
689/*
690 * REPLY_QOS_PARAM = 0x13 (command, has simple generic response)
691 *
692 * This command sets up timings for each of the 4 prioritized EDCA Tx FIFOs
693 * 0: Background, 1: Best Effort, 2: Video, 3: Voice.
694 */
695struct iwl4965_qosparam_cmd {
696 __le32 qos_flags;
697 struct iwl4965_ac_qos ac[AC_NUM];
698} __attribute__ ((packed));
699
700/******************************************************************************
701 * (3)
702 * Add/Modify Stations Commands & Responses:
703 *
704 *****************************************************************************/
705/*
706 * Multi station support
707 */
708
709/* Special, dedicated locations within device's station table */
710#define IWL_AP_ID 0
711#define IWL_MULTICAST_ID 1
712#define IWL_STA_ID 2
713#define IWL4965_BROADCAST_ID 31
714#define IWL4965_STATION_COUNT 32
715#define IWL5000_BROADCAST_ID 15
716#define IWL5000_STATION_COUNT 16
717
718#define IWL_STATION_COUNT 32 /* MAX(3945,4965)*/
719#define IWL_INVALID_STATION 255
720
721#define STA_FLG_PWR_SAVE_MSK __constant_cpu_to_le32(1 << 8);
722#define STA_FLG_RTS_MIMO_PROT_MSK __constant_cpu_to_le32(1 << 17)
723#define STA_FLG_AGG_MPDU_8US_MSK __constant_cpu_to_le32(1 << 18)
724#define STA_FLG_MAX_AGG_SIZE_POS (19)
725#define STA_FLG_MAX_AGG_SIZE_MSK __constant_cpu_to_le32(3 << 19)
726#define STA_FLG_FAT_EN_MSK __constant_cpu_to_le32(1 << 21)
727#define STA_FLG_MIMO_DIS_MSK __constant_cpu_to_le32(1 << 22)
728#define STA_FLG_AGG_MPDU_DENSITY_POS (23)
729#define STA_FLG_AGG_MPDU_DENSITY_MSK __constant_cpu_to_le32(7 << 23)
730
731/* Use in mode field. 1: modify existing entry, 0: add new station entry */
732#define STA_CONTROL_MODIFY_MSK 0x01
733
734/* key flags __le16*/
735#define STA_KEY_FLG_ENCRYPT_MSK __constant_cpu_to_le16(0x0007)
736#define STA_KEY_FLG_NO_ENC __constant_cpu_to_le16(0x0000)
737#define STA_KEY_FLG_WEP __constant_cpu_to_le16(0x0001)
738#define STA_KEY_FLG_CCMP __constant_cpu_to_le16(0x0002)
739#define STA_KEY_FLG_TKIP __constant_cpu_to_le16(0x0003)
740
741#define STA_KEY_FLG_KEYID_POS 8
742#define STA_KEY_FLG_INVALID __constant_cpu_to_le16(0x0800)
743/* wep key is either from global key (0) or from station info array (1) */
744#define STA_KEY_FLG_MAP_KEY_MSK __constant_cpu_to_le16(0x0008)
745
746/* wep key in STA: 5-bytes (0) or 13-bytes (1) */
747#define STA_KEY_FLG_KEY_SIZE_MSK __constant_cpu_to_le16(0x1000)
748#define STA_KEY_MULTICAST_MSK __constant_cpu_to_le16(0x4000)
749#define STA_KEY_MAX_NUM 8
750
751/* Flags indicate whether to modify vs. don't change various station params */
752#define STA_MODIFY_KEY_MASK 0x01
753#define STA_MODIFY_TID_DISABLE_TX 0x02
754#define STA_MODIFY_TX_RATE_MSK 0x04
755#define STA_MODIFY_ADDBA_TID_MSK 0x08
756#define STA_MODIFY_DELBA_TID_MSK 0x10
757
758/* Receiver address (actually, Rx station's index into station table),
759 * combined with Traffic ID (QOS priority), in format used by Tx Scheduler */
760#define BUILD_RAxTID(sta_id, tid) (((sta_id) << 4) + (tid))
761
762struct iwl4965_keyinfo {
763 __le16 key_flags;
764 u8 tkip_rx_tsc_byte2; /* TSC[2] for key mix ph1 detection */
765 u8 reserved1;
766 __le16 tkip_rx_ttak[5]; /* 10-byte unicast TKIP TTAK */
767 u8 key_offset;
768 u8 reserved2;
769 u8 key[16]; /* 16-byte unicast decryption key */
770} __attribute__ ((packed));
771
772/**
773 * struct sta_id_modify
774 * @addr[ETH_ALEN]: station's MAC address
775 * @sta_id: index of station in uCode's station table
776 * @modify_mask: STA_MODIFY_*, 1: modify, 0: don't change
777 *
778 * Driver selects unused table index when adding new station,
779 * or the index to a pre-existing station entry when modifying that station.
780 * Some indexes have special purposes (IWL_AP_ID, index 0, is for AP).
781 *
782 * modify_mask flags select which parameters to modify vs. leave alone.
783 */
784struct sta_id_modify {
785 u8 addr[ETH_ALEN];
786 __le16 reserved1;
787 u8 sta_id;
788 u8 modify_mask;
789 __le16 reserved2;
790} __attribute__ ((packed));
791
792/*
793 * REPLY_ADD_STA = 0x18 (command)
794 *
795 * The device contains an internal table of per-station information,
796 * with info on security keys, aggregation parameters, and Tx rates for
797 * initial Tx attempt and any retries (4965 uses REPLY_TX_LINK_QUALITY_CMD,
798 * 3945 uses REPLY_RATE_SCALE to set up rate tables).
799 *
800 * REPLY_ADD_STA sets up the table entry for one station, either creating
801 * a new entry, or modifying a pre-existing one.
802 *
803 * NOTE: RXON command (without "associated" bit set) wipes the station table
804 * clean. Moving into RF_KILL state does this also. Driver must set up
805 * new station table before transmitting anything on the RXON channel
806 * (except active scans or active measurements; those commands carry
807 * their own txpower/rate setup data).
808 *
809 * When getting started on a new channel, driver must set up the
810 * IWL_BROADCAST_ID entry (last entry in the table). For a client
811 * station in a BSS, once an AP is selected, driver sets up the AP STA
812 * in the IWL_AP_ID entry (1st entry in the table). BROADCAST and AP
813 * are all that are needed for a BSS client station. If the device is
814 * used as AP, or in an IBSS network, driver must set up station table
815 * entries for all STAs in network, starting with index IWL_STA_ID.
816 */
817struct iwl4965_addsta_cmd {
818 u8 mode; /* 1: modify existing, 0: add new station */
819 u8 reserved[3];
820 struct sta_id_modify sta;
821 struct iwl4965_keyinfo key;
822 __le32 station_flags; /* STA_FLG_* */
823 __le32 station_flags_msk; /* STA_FLG_* */
824
825 /* bit field to disable (1) or enable (0) Tx for Traffic ID (TID)
826 * corresponding to bit (e.g. bit 5 controls TID 5).
827 * Set modify_mask bit STA_MODIFY_TID_DISABLE_TX to use this field. */
828 __le16 tid_disable_tx;
829
830 __le16 reserved1;
831
832 /* TID for which to add block-ack support.
833 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
834 u8 add_immediate_ba_tid;
835
836 /* TID for which to remove block-ack support.
837 * Set modify_mask bit STA_MODIFY_DELBA_TID_MSK to use this field. */
838 u8 remove_immediate_ba_tid;
839
840 /* Starting Sequence Number for added block-ack support.
841 * Set modify_mask bit STA_MODIFY_ADDBA_TID_MSK to use this field. */
842 __le16 add_immediate_ba_ssn;
843
844 __le32 reserved2;
845} __attribute__ ((packed));
846
847#define ADD_STA_SUCCESS_MSK 0x1
848#define ADD_STA_NO_ROOM_IN_TABLE 0x2
849#define ADD_STA_NO_BLOCK_ACK_RESOURCE 0x4
850#define ADD_STA_MODIFY_NON_EXIST_STA 0x8
851/*
852 * REPLY_ADD_STA = 0x18 (response)
853 */
854struct iwl4965_add_sta_resp {
855 u8 status; /* ADD_STA_* */
856} __attribute__ ((packed));
857
858/*
859 * REPLY_WEP_KEY = 0x20
860 */
861struct iwl_wep_key {
862 u8 key_index;
863 u8 key_offset;
864 u8 reserved1[2];
865 u8 key_size;
866 u8 reserved2[3];
867 u8 key[16];
868} __attribute__ ((packed));
869
870struct iwl_wep_cmd {
871 u8 num_keys;
872 u8 global_key_type;
873 u8 flags;
874 u8 reserved;
875 struct iwl_wep_key key[0];
876} __attribute__ ((packed));
877
878#define WEP_KEY_WEP_TYPE 1
879#define WEP_KEYS_MAX 4
880#define WEP_INVALID_OFFSET 0xff
881#define WEP_KEY_LEN_128 13
882
883/******************************************************************************
884 * (4)
885 * Rx Responses:
886 *
887 *****************************************************************************/
888
889struct iwl4965_rx_frame_stats {
890 u8 phy_count;
891 u8 id;
892 u8 rssi;
893 u8 agc;
894 __le16 sig_avg;
895 __le16 noise_diff;
896 u8 payload[0];
897} __attribute__ ((packed));
898
899struct iwl4965_rx_frame_hdr {
900 __le16 channel;
901 __le16 phy_flags;
902 u8 reserved1;
903 u8 rate;
904 __le16 len;
905 u8 payload[0];
906} __attribute__ ((packed));
907
908#define RX_RES_STATUS_NO_CRC32_ERROR __constant_cpu_to_le32(1 << 0)
909#define RX_RES_STATUS_NO_RXE_OVERFLOW __constant_cpu_to_le32(1 << 1)
910
911#define RX_RES_PHY_FLAGS_BAND_24_MSK __constant_cpu_to_le16(1 << 0)
912#define RX_RES_PHY_FLAGS_MOD_CCK_MSK __constant_cpu_to_le16(1 << 1)
913#define RX_RES_PHY_FLAGS_SHORT_PREAMBLE_MSK __constant_cpu_to_le16(1 << 2)
914#define RX_RES_PHY_FLAGS_NARROW_BAND_MSK __constant_cpu_to_le16(1 << 3)
915#define RX_RES_PHY_FLAGS_ANTENNA_MSK __constant_cpu_to_le16(0xf0)
916
917#define RX_RES_STATUS_SEC_TYPE_MSK (0x7 << 8)
918#define RX_RES_STATUS_SEC_TYPE_NONE (0x0 << 8)
919#define RX_RES_STATUS_SEC_TYPE_WEP (0x1 << 8)
920#define RX_RES_STATUS_SEC_TYPE_CCMP (0x2 << 8)
921#define RX_RES_STATUS_SEC_TYPE_TKIP (0x3 << 8)
922#define RX_RES_STATUS_SEC_TYPE_ERR (0x7 << 8)
923
924#define RX_RES_STATUS_STATION_FOUND (1<<6)
925#define RX_RES_STATUS_NO_STATION_INFO_MISMATCH (1<<7)
926
927#define RX_RES_STATUS_DECRYPT_TYPE_MSK (0x3 << 11)
928#define RX_RES_STATUS_NOT_DECRYPT (0x0 << 11)
929#define RX_RES_STATUS_DECRYPT_OK (0x3 << 11)
930#define RX_RES_STATUS_BAD_ICV_MIC (0x1 << 11)
931#define RX_RES_STATUS_BAD_KEY_TTAK (0x2 << 11)
932
933#define RX_MPDU_RES_STATUS_ICV_OK (0x20)
934#define RX_MPDU_RES_STATUS_MIC_OK (0x40)
935#define RX_MPDU_RES_STATUS_TTAK_OK (1 << 7)
936#define RX_MPDU_RES_STATUS_DEC_DONE_MSK (0x800)
937
938struct iwl4965_rx_frame_end {
939 __le32 status;
940 __le64 timestamp;
941 __le32 beacon_timestamp;
942} __attribute__ ((packed));
943
944/*
945 * REPLY_3945_RX = 0x1b (response only, not a command)
946 *
947 * NOTE: DO NOT dereference from casts to this structure
948 * It is provided only for calculating minimum data set size.
949 * The actual offsets of the hdr and end are dynamic based on
950 * stats.phy_count
951 */
952struct iwl4965_rx_frame {
953 struct iwl4965_rx_frame_stats stats;
954 struct iwl4965_rx_frame_hdr hdr;
955 struct iwl4965_rx_frame_end end;
956} __attribute__ ((packed));
957
958/* Fixed (non-configurable) rx data from phy */
959#define RX_PHY_FLAGS_ANTENNAE_OFFSET (4)
960#define RX_PHY_FLAGS_ANTENNAE_MASK (0x70)
961#define IWL_AGC_DB_MASK (0x3f80) /* MASK(7,13) */
962#define IWL_AGC_DB_POS (7)
963struct iwl4965_rx_non_cfg_phy {
964 __le16 ant_selection; /* ant A bit 4, ant B bit 5, ant C bit 6 */
965 __le16 agc_info; /* agc code 0:6, agc dB 7:13, reserved 14:15 */
966 u8 rssi_info[6]; /* we use even entries, 0/2/4 for A/B/C rssi */
967 u8 pad[0];
968} __attribute__ ((packed));
969
970/*
971 * REPLY_RX = 0xc3 (response only, not a command)
972 * Used only for legacy (non 11n) frames.
973 */
974#define RX_RES_PHY_CNT 14
975struct iwl4965_rx_phy_res {
976 u8 non_cfg_phy_cnt; /* non configurable DSP phy data byte count */
977 u8 cfg_phy_cnt; /* configurable DSP phy data byte count */
978 u8 stat_id; /* configurable DSP phy data set ID */
979 u8 reserved1;
980 __le64 timestamp; /* TSF at on air rise */
981 __le32 beacon_time_stamp; /* beacon at on-air rise */
982 __le16 phy_flags; /* general phy flags: band, modulation, ... */
983 __le16 channel; /* channel number */
984 __le16 non_cfg_phy[RX_RES_PHY_CNT]; /* upto 14 phy entries */
985 __le32 reserved2;
986 __le32 rate_n_flags; /* RATE_MCS_* */
987 __le16 byte_count; /* frame's byte-count */
988 __le16 reserved3;
989} __attribute__ ((packed));
990
991struct iwl4965_rx_mpdu_res_start {
992 __le16 byte_count;
993 __le16 reserved;
994} __attribute__ ((packed));
995
996
997/******************************************************************************
998 * (5)
999 * Tx Commands & Responses:
1000 *
1001 * Driver must place each REPLY_TX command into one of the prioritized Tx
1002 * queues in host DRAM, shared between driver and device (see comments for
1003 * SCD registers and Tx/Rx Queues). When the device's Tx scheduler and uCode
1004 * are preparing to transmit, the device pulls the Tx command over the PCI
1005 * bus via one of the device's Tx DMA channels, to fill an internal FIFO
1006 * from which data will be transmitted.
1007 *
1008 * uCode handles all timing and protocol related to control frames
1009 * (RTS/CTS/ACK), based on flags in the Tx command. uCode and Tx scheduler
1010 * handle reception of block-acks; uCode updates the host driver via
1011 * REPLY_COMPRESSED_BA (4965).
1012 *
1013 * uCode handles retrying Tx when an ACK is expected but not received.
1014 * This includes trying lower data rates than the one requested in the Tx
1015 * command, as set up by the REPLY_RATE_SCALE (for 3945) or
1016 * REPLY_TX_LINK_QUALITY_CMD (4965).
1017 *
1018 * Driver sets up transmit power for various rates via REPLY_TX_PWR_TABLE_CMD.
1019 * This command must be executed after every RXON command, before Tx can occur.
1020 *****************************************************************************/
1021
1022/* REPLY_TX Tx flags field */
1023
1024/* 1: Use Request-To-Send protocol before this frame.
1025 * Mutually exclusive vs. TX_CMD_FLG_CTS_MSK. */
1026#define TX_CMD_FLG_RTS_MSK __constant_cpu_to_le32(1 << 1)
1027
1028/* 1: Transmit Clear-To-Send to self before this frame.
1029 * Driver should set this for AUTH/DEAUTH/ASSOC-REQ/REASSOC mgmnt frames.
1030 * Mutually exclusive vs. TX_CMD_FLG_RTS_MSK. */
1031#define TX_CMD_FLG_CTS_MSK __constant_cpu_to_le32(1 << 2)
1032
1033/* 1: Expect ACK from receiving station
1034 * 0: Don't expect ACK (MAC header's duration field s/b 0)
1035 * Set this for unicast frames, but not broadcast/multicast. */
1036#define TX_CMD_FLG_ACK_MSK __constant_cpu_to_le32(1 << 3)
1037
1038/* For 4965:
1039 * 1: Use rate scale table (see REPLY_TX_LINK_QUALITY_CMD).
1040 * Tx command's initial_rate_index indicates first rate to try;
1041 * uCode walks through table for additional Tx attempts.
1042 * 0: Use Tx rate/MCS from Tx command's rate_n_flags field.
1043 * This rate will be used for all Tx attempts; it will not be scaled. */
1044#define TX_CMD_FLG_STA_RATE_MSK __constant_cpu_to_le32(1 << 4)
1045
1046/* 1: Expect immediate block-ack.
1047 * Set when Txing a block-ack request frame. Also set TX_CMD_FLG_ACK_MSK. */
1048#define TX_CMD_FLG_IMM_BA_RSP_MASK __constant_cpu_to_le32(1 << 6)
1049
1050/* 1: Frame requires full Tx-Op protection.
1051 * Set this if either RTS or CTS Tx Flag gets set. */
1052#define TX_CMD_FLG_FULL_TXOP_PROT_MSK __constant_cpu_to_le32(1 << 7)
1053
1054/* Tx antenna selection field; used only for 3945, reserved (0) for 4965.
1055 * Set field to "0" to allow 3945 uCode to select antenna (normal usage). */
1056#define TX_CMD_FLG_ANT_SEL_MSK __constant_cpu_to_le32(0xf00)
1057#define TX_CMD_FLG_ANT_A_MSK __constant_cpu_to_le32(1 << 8)
1058#define TX_CMD_FLG_ANT_B_MSK __constant_cpu_to_le32(1 << 9)
1059
1060/* 1: Ignore Bluetooth priority for this frame.
1061 * 0: Delay Tx until Bluetooth device is done (normal usage). */
1062#define TX_CMD_FLG_BT_DIS_MSK __constant_cpu_to_le32(1 << 12)
1063
1064/* 1: uCode overrides sequence control field in MAC header.
1065 * 0: Driver provides sequence control field in MAC header.
1066 * Set this for management frames, non-QOS data frames, non-unicast frames,
1067 * and also in Tx command embedded in REPLY_SCAN_CMD for active scans. */
1068#define TX_CMD_FLG_SEQ_CTL_MSK __constant_cpu_to_le32(1 << 13)
1069
1070/* 1: This frame is non-last MPDU; more fragments are coming.
1071 * 0: Last fragment, or not using fragmentation. */
1072#define TX_CMD_FLG_MORE_FRAG_MSK __constant_cpu_to_le32(1 << 14)
1073
1074/* 1: uCode calculates and inserts Timestamp Function (TSF) in outgoing frame.
1075 * 0: No TSF required in outgoing frame.
1076 * Set this for transmitting beacons and probe responses. */
1077#define TX_CMD_FLG_TSF_MSK __constant_cpu_to_le32(1 << 16)
1078
1079/* 1: Driver inserted 2 bytes pad after the MAC header, for (required) dword
1080 * alignment of frame's payload data field.
1081 * 0: No pad
1082 * Set this for MAC headers with 26 or 30 bytes, i.e. those with QOS or ADDR4
1083 * field (but not both). Driver must align frame data (i.e. data following
1084 * MAC header) to DWORD boundary. */
1085#define TX_CMD_FLG_MH_PAD_MSK __constant_cpu_to_le32(1 << 20)
1086
1087/* accelerate aggregation support
1088 * 0 - no CCMP encryption; 1 - CCMP encryption */
1089#define TX_CMD_FLG_AGG_CCMP_MSK __constant_cpu_to_le32(1 << 22)
1090
1091/* HCCA-AP - disable duration overwriting. */
1092#define TX_CMD_FLG_DUR_MSK __constant_cpu_to_le32(1 << 25)
1093
1094
1095/*
1096 * TX command security control
1097 */
1098#define TX_CMD_SEC_WEP 0x01
1099#define TX_CMD_SEC_CCM 0x02
1100#define TX_CMD_SEC_TKIP 0x03
1101#define TX_CMD_SEC_MSK 0x03
1102#define TX_CMD_SEC_SHIFT 6
1103#define TX_CMD_SEC_KEY128 0x08
1104
1105/*
1106 * security overhead sizes
1107 */
1108#define WEP_IV_LEN 4
1109#define WEP_ICV_LEN 4
1110#define CCMP_MIC_LEN 8
1111#define TKIP_ICV_LEN 4
1112
1113/*
1114 * 4965 uCode updates these Tx attempt count values in host DRAM.
1115 * Used for managing Tx retries when expecting block-acks.
1116 * Driver should set these fields to 0.
1117 */
1118struct iwl4965_dram_scratch {
1119 u8 try_cnt; /* Tx attempts */
1120 u8 bt_kill_cnt; /* Tx attempts blocked by Bluetooth device */
1121 __le16 reserved;
1122} __attribute__ ((packed));
1123
1124/*
1125 * REPLY_TX = 0x1c (command)
1126 */
1127struct iwl4965_tx_cmd {
1128 /*
1129 * MPDU byte count:
1130 * MAC header (24/26/30/32 bytes) + 2 bytes pad if 26/30 header size,
1131 * + 8 byte IV for CCM or TKIP (not used for WEP)
1132 * + Data payload
1133 * + 8-byte MIC (not used for CCM/WEP)
1134 * NOTE: Does not include Tx command bytes, post-MAC pad bytes,
1135 * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes.i
1136 * Range: 14-2342 bytes.
1137 */
1138 __le16 len;
1139
1140 /*
1141 * MPDU or MSDU byte count for next frame.
1142 * Used for fragmentation and bursting, but not 11n aggregation.
1143 * Same as "len", but for next frame. Set to 0 if not applicable.
1144 */
1145 __le16 next_frame_len;
1146
1147 __le32 tx_flags; /* TX_CMD_FLG_* */
1148
1149 /* 4965's uCode may modify this field of the Tx command (in host DRAM!).
1150 * Driver must also set dram_lsb_ptr and dram_msb_ptr in this cmd. */
1151 struct iwl4965_dram_scratch scratch;
1152
1153 /* Rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is cleared. */
1154 __le32 rate_n_flags; /* RATE_MCS_* */
1155
1156 /* Index of destination station in uCode's station table */
1157 u8 sta_id;
1158
1159 /* Type of security encryption: CCM or TKIP */
1160 u8 sec_ctl; /* TX_CMD_SEC_* */
1161
1162 /*
1163 * Index into rate table (see REPLY_TX_LINK_QUALITY_CMD) for initial
1164 * Tx attempt, if TX_CMD_FLG_STA_RATE_MSK is set. Normally "0" for
1165 * data frames, this field may be used to selectively reduce initial
1166 * rate (via non-0 value) for special frames (e.g. management), while
1167 * still supporting rate scaling for all frames.
1168 */
1169 u8 initial_rate_index;
1170 u8 reserved;
1171 u8 key[16];
1172 __le16 next_frame_flags;
1173 __le16 reserved2;
1174 union {
1175 __le32 life_time;
1176 __le32 attempt;
1177 } stop_time;
1178
1179 /* Host DRAM physical address pointer to "scratch" in this command.
1180 * Must be dword aligned. "0" in dram_lsb_ptr disables usage. */
1181 __le32 dram_lsb_ptr;
1182 u8 dram_msb_ptr;
1183
1184 u8 rts_retry_limit; /*byte 50 */
1185 u8 data_retry_limit; /*byte 51 */
1186 u8 tid_tspec;
1187 union {
1188 __le16 pm_frame_timeout;
1189 __le16 attempt_duration;
1190 } timeout;
1191
1192 /*
1193 * Duration of EDCA burst Tx Opportunity, in 32-usec units.
1194 * Set this if txop time is not specified by HCCA protocol (e.g. by AP).
1195 */
1196 __le16 driver_txop;
1197
1198 /*
1199 * MAC header goes here, followed by 2 bytes padding if MAC header
1200 * length is 26 or 30 bytes, followed by payload data
1201 */
1202 u8 payload[0];
1203 struct ieee80211_hdr hdr[0];
1204} __attribute__ ((packed));
1205
1206/* TX command response is sent after *all* transmission attempts.
1207 *
1208 * NOTES:
1209 *
1210 * TX_STATUS_FAIL_NEXT_FRAG
1211 *
1212 * If the fragment flag in the MAC header for the frame being transmitted
1213 * is set and there is insufficient time to transmit the next frame, the
1214 * TX status will be returned with 'TX_STATUS_FAIL_NEXT_FRAG'.
1215 *
1216 * TX_STATUS_FIFO_UNDERRUN
1217 *
1218 * Indicates the host did not provide bytes to the FIFO fast enough while
1219 * a TX was in progress.
1220 *
1221 * TX_STATUS_FAIL_MGMNT_ABORT
1222 *
1223 * This status is only possible if the ABORT ON MGMT RX parameter was
1224 * set to true with the TX command.
1225 *
1226 * If the MSB of the status parameter is set then an abort sequence is
1227 * required. This sequence consists of the host activating the TX Abort
1228 * control line, and then waiting for the TX Abort command response. This
1229 * indicates that a the device is no longer in a transmit state, and that the
1230 * command FIFO has been cleared. The host must then deactivate the TX Abort
1231 * control line. Receiving is still allowed in this case.
1232 */
1233enum {
1234 TX_STATUS_SUCCESS = 0x01,
1235 TX_STATUS_DIRECT_DONE = 0x02,
1236 TX_STATUS_FAIL_SHORT_LIMIT = 0x82,
1237 TX_STATUS_FAIL_LONG_LIMIT = 0x83,
1238 TX_STATUS_FAIL_FIFO_UNDERRUN = 0x84,
1239 TX_STATUS_FAIL_MGMNT_ABORT = 0x85,
1240 TX_STATUS_FAIL_NEXT_FRAG = 0x86,
1241 TX_STATUS_FAIL_LIFE_EXPIRE = 0x87,
1242 TX_STATUS_FAIL_DEST_PS = 0x88,
1243 TX_STATUS_FAIL_ABORTED = 0x89,
1244 TX_STATUS_FAIL_BT_RETRY = 0x8a,
1245 TX_STATUS_FAIL_STA_INVALID = 0x8b,
1246 TX_STATUS_FAIL_FRAG_DROPPED = 0x8c,
1247 TX_STATUS_FAIL_TID_DISABLE = 0x8d,
1248 TX_STATUS_FAIL_FRAME_FLUSHED = 0x8e,
1249 TX_STATUS_FAIL_INSUFFICIENT_CF_POLL = 0x8f,
1250 TX_STATUS_FAIL_TX_LOCKED = 0x90,
1251 TX_STATUS_FAIL_NO_BEACON_ON_RADAR = 0x91,
1252};
1253
1254#define TX_PACKET_MODE_REGULAR 0x0000
1255#define TX_PACKET_MODE_BURST_SEQ 0x0100
1256#define TX_PACKET_MODE_BURST_FIRST 0x0200
1257
1258enum {
1259 TX_POWER_PA_NOT_ACTIVE = 0x0,
1260};
1261
1262enum {
1263 TX_STATUS_MSK = 0x000000ff, /* bits 0:7 */
1264 TX_STATUS_DELAY_MSK = 0x00000040,
1265 TX_STATUS_ABORT_MSK = 0x00000080,
1266 TX_PACKET_MODE_MSK = 0x0000ff00, /* bits 8:15 */
1267 TX_FIFO_NUMBER_MSK = 0x00070000, /* bits 16:18 */
1268 TX_RESERVED = 0x00780000, /* bits 19:22 */
1269 TX_POWER_PA_DETECT_MSK = 0x7f800000, /* bits 23:30 */
1270 TX_ABORT_REQUIRED_MSK = 0x80000000, /* bits 31:31 */
1271};
1272
1273/* *******************************
1274 * TX aggregation status
1275 ******************************* */
1276
1277enum {
1278 AGG_TX_STATE_TRANSMITTED = 0x00,
1279 AGG_TX_STATE_UNDERRUN_MSK = 0x01,
1280 AGG_TX_STATE_BT_PRIO_MSK = 0x02,
1281 AGG_TX_STATE_FEW_BYTES_MSK = 0x04,
1282 AGG_TX_STATE_ABORT_MSK = 0x08,
1283 AGG_TX_STATE_LAST_SENT_TTL_MSK = 0x10,
1284 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK = 0x20,
1285 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK = 0x40,
1286 AGG_TX_STATE_SCD_QUERY_MSK = 0x80,
1287 AGG_TX_STATE_TEST_BAD_CRC32_MSK = 0x100,
1288 AGG_TX_STATE_RESPONSE_MSK = 0x1ff,
1289 AGG_TX_STATE_DUMP_TX_MSK = 0x200,
1290 AGG_TX_STATE_DELAY_TX_MSK = 0x400
1291};
1292
1293#define AGG_TX_STATE_LAST_SENT_MSK \
1294(AGG_TX_STATE_LAST_SENT_TTL_MSK | \
1295 AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK | \
1296 AGG_TX_STATE_LAST_SENT_BT_KILL_MSK)
1297
1298/* # tx attempts for first frame in aggregation */
1299#define AGG_TX_STATE_TRY_CNT_POS 12
1300#define AGG_TX_STATE_TRY_CNT_MSK 0xf000
1301
1302/* Command ID and sequence number of Tx command for this frame */
1303#define AGG_TX_STATE_SEQ_NUM_POS 16
1304#define AGG_TX_STATE_SEQ_NUM_MSK 0xffff0000
1305
1306/*
1307 * REPLY_TX = 0x1c (response)
1308 *
1309 * This response may be in one of two slightly different formats, indicated
1310 * by the frame_count field:
1311 *
1312 * 1) No aggregation (frame_count == 1). This reports Tx results for
1313 * a single frame. Multiple attempts, at various bit rates, may have
1314 * been made for this frame.
1315 *
1316 * 2) Aggregation (frame_count > 1). This reports Tx results for
1317 * 2 or more frames that used block-acknowledge. All frames were
1318 * transmitted at same rate. Rate scaling may have been used if first
1319 * frame in this new agg block failed in previous agg block(s).
1320 *
1321 * Note that, for aggregation, ACK (block-ack) status is not delivered here;
1322 * block-ack has not been received by the time the 4965 records this status.
1323 * This status relates to reasons the tx might have been blocked or aborted
1324 * within the sending station (this 4965), rather than whether it was
1325 * received successfully by the destination station.
1326 */
1327struct iwl4965_tx_resp {
1328 u8 frame_count; /* 1 no aggregation, >1 aggregation */
1329 u8 bt_kill_count; /* # blocked by bluetooth (unused for agg) */
1330 u8 failure_rts; /* # failures due to unsuccessful RTS */
1331 u8 failure_frame; /* # failures due to no ACK (unused for agg) */
1332
1333 /* For non-agg: Rate at which frame was successful.
1334 * For agg: Rate at which all frames were transmitted. */
1335 __le32 rate_n_flags; /* RATE_MCS_* */
1336
1337 /* For non-agg: RTS + CTS + frame tx attempts time + ACK.
1338 * For agg: RTS + CTS + aggregation tx time + block-ack time. */
1339 __le16 wireless_media_time; /* uSecs */
1340
1341 __le16 reserved;
1342 __le32 pa_power1; /* RF power amplifier measurement (not used) */
1343 __le32 pa_power2;
1344
1345 /*
1346 * For non-agg: frame status TX_STATUS_*
1347 * For agg: status of 1st frame, AGG_TX_STATE_*; other frame status
1348 * fields follow this one, up to frame_count.
1349 * Bit fields:
1350 * 11- 0: AGG_TX_STATE_* status code
1351 * 15-12: Retry count for 1st frame in aggregation (retries
1352 * occur if tx failed for this frame when it was a
1353 * member of a previous aggregation block). If rate
1354 * scaling is used, retry count indicates the rate
1355 * table entry used for all frames in the new agg.
1356 * 31-16: Sequence # for this frame's Tx cmd (not SSN!)
1357 */
1358 __le32 status; /* TX status (for aggregation status of 1st frame) */
1359} __attribute__ ((packed));
1360
1361struct agg_tx_status {
1362 __le16 status;
1363 __le16 sequence;
1364} __attribute__ ((packed));
1365
1366struct iwl4965_tx_resp_agg {
1367 u8 frame_count; /* 1 no aggregation, >1 aggregation */
1368 u8 reserved1;
1369 u8 failure_rts;
1370 u8 failure_frame;
1371 __le32 rate_n_flags;
1372 __le16 wireless_media_time;
1373 __le16 reserved3;
1374 __le32 pa_power1;
1375 __le32 pa_power2;
1376 struct agg_tx_status status; /* TX status (for aggregation status */
1377 /* of 1st frame) */
1378} __attribute__ ((packed));
1379
1380/*
1381 * REPLY_COMPRESSED_BA = 0xc5 (response only, not a command)
1382 *
1383 * Reports Block-Acknowledge from recipient station
1384 */
1385struct iwl4965_compressed_ba_resp {
1386 __le32 sta_addr_lo32;
1387 __le16 sta_addr_hi16;
1388 __le16 reserved;
1389
1390 /* Index of recipient (BA-sending) station in uCode's station table */
1391 u8 sta_id;
1392 u8 tid;
1393 __le16 seq_ctl;
1394 __le64 bitmap;
1395 __le16 scd_flow;
1396 __le16 scd_ssn;
1397} __attribute__ ((packed));
1398
1399/*
1400 * REPLY_TX_PWR_TABLE_CMD = 0x97 (command, has simple generic response)
1401 *
1402 * See details under "TXPOWER" in iwl-4965-hw.h.
1403 */
1404struct iwl4965_txpowertable_cmd {
1405 u8 band; /* 0: 5 GHz, 1: 2.4 GHz */
1406 u8 reserved;
1407 __le16 channel;
1408 struct iwl4965_tx_power_db tx_power;
1409} __attribute__ ((packed));
1410
1411/*RS_NEW_API: only TLC_RTS remains and moved to bit 0 */
1412#define LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK (1 << 0)
1413
1414/* # of EDCA prioritized tx fifos */
1415#define LINK_QUAL_AC_NUM AC_NUM
1416
1417/* # entries in rate scale table to support Tx retries */
1418#define LINK_QUAL_MAX_RETRY_NUM 16
1419
1420/* Tx antenna selection values */
1421#define LINK_QUAL_ANT_A_MSK (1 << 0)
1422#define LINK_QUAL_ANT_B_MSK (1 << 1)
1423#define LINK_QUAL_ANT_MSK (LINK_QUAL_ANT_A_MSK|LINK_QUAL_ANT_B_MSK)
1424
1425
1426/**
1427 * struct iwl_link_qual_general_params
1428 *
1429 * Used in REPLY_TX_LINK_QUALITY_CMD
1430 */
1431struct iwl_link_qual_general_params {
1432 u8 flags;
1433
1434 /* No entries at or above this (driver chosen) index contain MIMO */
1435 u8 mimo_delimiter;
1436
1437 /* Best single antenna to use for single stream (legacy, SISO). */
1438 u8 single_stream_ant_msk; /* LINK_QUAL_ANT_* */
1439
1440 /* Best antennas to use for MIMO (unused for 4965, assumes both). */
1441 u8 dual_stream_ant_msk; /* LINK_QUAL_ANT_* */
1442
1443 /*
1444 * If driver needs to use different initial rates for different
1445 * EDCA QOS access categories (as implemented by tx fifos 0-3),
1446 * this table will set that up, by indicating the indexes in the
1447 * rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table at which to start.
1448 * Otherwise, driver should set all entries to 0.
1449 *
1450 * Entry usage:
1451 * 0 = Background, 1 = Best Effort (normal), 2 = Video, 3 = Voice
1452 * TX FIFOs above 3 use same value (typically 0) as TX FIFO 3.
1453 */
1454 u8 start_rate_index[LINK_QUAL_AC_NUM];
1455} __attribute__ ((packed));
1456
1457/**
1458 * struct iwl_link_qual_agg_params
1459 *
1460 * Used in REPLY_TX_LINK_QUALITY_CMD
1461 */
1462struct iwl_link_qual_agg_params {
1463
1464 /* Maximum number of uSec in aggregation.
1465 * Driver should set this to 4000 (4 milliseconds). */
1466 __le16 agg_time_limit;
1467
1468 /*
1469 * Number of Tx retries allowed for a frame, before that frame will
1470 * no longer be considered for the start of an aggregation sequence
1471 * (scheduler will then try to tx it as single frame).
1472 * Driver should set this to 3.
1473 */
1474 u8 agg_dis_start_th;
1475
1476 /*
1477 * Maximum number of frames in aggregation.
1478 * 0 = no limit (default). 1 = no aggregation.
1479 * Other values = max # frames in aggregation.
1480 */
1481 u8 agg_frame_cnt_limit;
1482
1483 __le32 reserved;
1484} __attribute__ ((packed));
1485
1486/*
1487 * REPLY_TX_LINK_QUALITY_CMD = 0x4e (command, has simple generic response)
1488 *
1489 * For 4965 only; 3945 uses REPLY_RATE_SCALE.
1490 *
1491 * Each station in the 4965's internal station table has its own table of 16
1492 * Tx rates and modulation modes (e.g. legacy/SISO/MIMO) for retrying Tx when
1493 * an ACK is not received. This command replaces the entire table for
1494 * one station.
1495 *
1496 * NOTE: Station must already be in 4965's station table. Use REPLY_ADD_STA.
1497 *
1498 * The rate scaling procedures described below work well. Of course, other
1499 * procedures are possible, and may work better for particular environments.
1500 *
1501 *
1502 * FILLING THE RATE TABLE
1503 *
1504 * Given a particular initial rate and mode, as determined by the rate
1505 * scaling algorithm described below, the Linux driver uses the following
1506 * formula to fill the rs_table[LINK_QUAL_MAX_RETRY_NUM] rate table in the
1507 * Link Quality command:
1508 *
1509 *
1510 * 1) If using High-throughput (HT) (SISO or MIMO) initial rate:
1511 * a) Use this same initial rate for first 3 entries.
1512 * b) Find next lower available rate using same mode (SISO or MIMO),
1513 * use for next 3 entries. If no lower rate available, switch to
1514 * legacy mode (no FAT channel, no MIMO, no short guard interval).
1515 * c) If using MIMO, set command's mimo_delimiter to number of entries
1516 * using MIMO (3 or 6).
1517 * d) After trying 2 HT rates, switch to legacy mode (no FAT channel,
1518 * no MIMO, no short guard interval), at the next lower bit rate
1519 * (e.g. if second HT bit rate was 54, try 48 legacy), and follow
1520 * legacy procedure for remaining table entries.
1521 *
1522 * 2) If using legacy initial rate:
1523 * a) Use the initial rate for only one entry.
1524 * b) For each following entry, reduce the rate to next lower available
1525 * rate, until reaching the lowest available rate.
1526 * c) When reducing rate, also switch antenna selection.
1527 * d) Once lowest available rate is reached, repeat this rate until
1528 * rate table is filled (16 entries), switching antenna each entry.
1529 *
1530 *
1531 * ACCUMULATING HISTORY
1532 *
1533 * The rate scaling algorithm for 4965, as implemented in Linux driver, uses
1534 * two sets of frame Tx success history: One for the current/active modulation
1535 * mode, and one for a speculative/search mode that is being attempted. If the
1536 * speculative mode turns out to be more effective (i.e. actual transfer
1537 * rate is better), then the driver continues to use the speculative mode
1538 * as the new current active mode.
1539 *
1540 * Each history set contains, separately for each possible rate, data for a
1541 * sliding window of the 62 most recent tx attempts at that rate. The data
1542 * includes a shifting bitmap of success(1)/failure(0), and sums of successful
1543 * and attempted frames, from which the driver can additionally calculate a
1544 * success ratio (success / attempted) and number of failures
1545 * (attempted - success), and control the size of the window (attempted).
1546 * The driver uses the bit map to remove successes from the success sum, as
1547 * the oldest tx attempts fall out of the window.
1548 *
1549 * When the 4965 makes multiple tx attempts for a given frame, each attempt
1550 * might be at a different rate, and have different modulation characteristics
1551 * (e.g. antenna, fat channel, short guard interval), as set up in the rate
1552 * scaling table in the Link Quality command. The driver must determine
1553 * which rate table entry was used for each tx attempt, to determine which
1554 * rate-specific history to update, and record only those attempts that
1555 * match the modulation characteristics of the history set.
1556 *
1557 * When using block-ack (aggregation), all frames are transmitted at the same
1558 * rate, since there is no per-attempt acknowledgement from the destination
1559 * station. The Tx response struct iwl_tx_resp indicates the Tx rate in
1560 * rate_n_flags field. After receiving a block-ack, the driver can update
1561 * history for the entire block all at once.
1562 *
1563 *
1564 * FINDING BEST STARTING RATE:
1565 *
1566 * When working with a selected initial modulation mode (see below), the
1567 * driver attempts to find a best initial rate. The initial rate is the
1568 * first entry in the Link Quality command's rate table.
1569 *
1570 * 1) Calculate actual throughput (success ratio * expected throughput, see
1571 * table below) for current initial rate. Do this only if enough frames
1572 * have been attempted to make the value meaningful: at least 6 failed
1573 * tx attempts, or at least 8 successes. If not enough, don't try rate
1574 * scaling yet.
1575 *
1576 * 2) Find available rates adjacent to current initial rate. Available means:
1577 * a) supported by hardware &&
1578 * b) supported by association &&
1579 * c) within any constraints selected by user
1580 *
1581 * 3) Gather measured throughputs for adjacent rates. These might not have
1582 * enough history to calculate a throughput. That's okay, we might try
1583 * using one of them anyway!
1584 *
1585 * 4) Try decreasing rate if, for current rate:
1586 * a) success ratio is < 15% ||
1587 * b) lower adjacent rate has better measured throughput ||
1588 * c) higher adjacent rate has worse throughput, and lower is unmeasured
1589 *
1590 * As a sanity check, if decrease was determined above, leave rate
1591 * unchanged if:
1592 * a) lower rate unavailable
1593 * b) success ratio at current rate > 85% (very good)
1594 * c) current measured throughput is better than expected throughput
1595 * of lower rate (under perfect 100% tx conditions, see table below)
1596 *
1597 * 5) Try increasing rate if, for current rate:
1598 * a) success ratio is < 15% ||
1599 * b) both adjacent rates' throughputs are unmeasured (try it!) ||
1600 * b) higher adjacent rate has better measured throughput ||
1601 * c) lower adjacent rate has worse throughput, and higher is unmeasured
1602 *
1603 * As a sanity check, if increase was determined above, leave rate
1604 * unchanged if:
1605 * a) success ratio at current rate < 70%. This is not particularly
1606 * good performance; higher rate is sure to have poorer success.
1607 *
1608 * 6) Re-evaluate the rate after each tx frame. If working with block-
1609 * acknowledge, history and statistics may be calculated for the entire
1610 * block (including prior history that fits within the history windows),
1611 * before re-evaluation.
1612 *
1613 * FINDING BEST STARTING MODULATION MODE:
1614 *
1615 * After working with a modulation mode for a "while" (and doing rate scaling),
1616 * the driver searches for a new initial mode in an attempt to improve
1617 * throughput. The "while" is measured by numbers of attempted frames:
1618 *
1619 * For legacy mode, search for new mode after:
1620 * 480 successful frames, or 160 failed frames
1621 * For high-throughput modes (SISO or MIMO), search for new mode after:
1622 * 4500 successful frames, or 400 failed frames
1623 *
1624 * Mode switch possibilities are (3 for each mode):
1625 *
1626 * For legacy:
1627 * Change antenna, try SISO (if HT association), try MIMO (if HT association)
1628 * For SISO:
1629 * Change antenna, try MIMO, try shortened guard interval (SGI)
1630 * For MIMO:
1631 * Try SISO antenna A, SISO antenna B, try shortened guard interval (SGI)
1632 *
1633 * When trying a new mode, use the same bit rate as the old/current mode when
1634 * trying antenna switches and shortened guard interval. When switching to
1635 * SISO from MIMO or legacy, or to MIMO from SISO or legacy, use a rate
1636 * for which the expected throughput (under perfect conditions) is about the
1637 * same or slightly better than the actual measured throughput delivered by
1638 * the old/current mode.
1639 *
1640 * Actual throughput can be estimated by multiplying the expected throughput
1641 * by the success ratio (successful / attempted tx frames). Frame size is
1642 * not considered in this calculation; it assumes that frame size will average
1643 * out to be fairly consistent over several samples. The following are
1644 * metric values for expected throughput assuming 100% success ratio.
1645 * Only G band has support for CCK rates:
1646 *
1647 * RATE: 1 2 5 11 6 9 12 18 24 36 48 54 60
1648 *
1649 * G: 7 13 35 58 40 57 72 98 121 154 177 186 186
1650 * A: 0 0 0 0 40 57 72 98 121 154 177 186 186
1651 * SISO 20MHz: 0 0 0 0 42 42 76 102 124 159 183 193 202
1652 * SGI SISO 20MHz: 0 0 0 0 46 46 82 110 132 168 192 202 211
1653 * MIMO 20MHz: 0 0 0 0 74 74 123 155 179 214 236 244 251
1654 * SGI MIMO 20MHz: 0 0 0 0 81 81 131 164 188 222 243 251 257
1655 * SISO 40MHz: 0 0 0 0 77 77 127 160 184 220 242 250 257
1656 * SGI SISO 40MHz: 0 0 0 0 83 83 135 169 193 229 250 257 264
1657 * MIMO 40MHz: 0 0 0 0 123 123 182 214 235 264 279 285 289
1658 * SGI MIMO 40MHz: 0 0 0 0 131 131 191 222 242 270 284 289 293
1659 *
1660 * After the new mode has been tried for a short while (minimum of 6 failed
1661 * frames or 8 successful frames), compare success ratio and actual throughput
1662 * estimate of the new mode with the old. If either is better with the new
1663 * mode, continue to use the new mode.
1664 *
1665 * Continue comparing modes until all 3 possibilities have been tried.
1666 * If moving from legacy to HT, try all 3 possibilities from the new HT
1667 * mode. After trying all 3, a best mode is found. Continue to use this mode
1668 * for the longer "while" described above (e.g. 480 successful frames for
1669 * legacy), and then repeat the search process.
1670 *
1671 */
1672struct iwl_link_quality_cmd {
1673
1674 /* Index of destination/recipient station in uCode's station table */
1675 u8 sta_id;
1676 u8 reserved1;
1677 __le16 control; /* not used */
1678 struct iwl_link_qual_general_params general_params;
1679 struct iwl_link_qual_agg_params agg_params;
1680
1681 /*
1682 * Rate info; when using rate-scaling, Tx command's initial_rate_index
1683 * specifies 1st Tx rate attempted, via index into this table.
1684 * 4965 works its way through table when retrying Tx.
1685 */
1686 struct {
1687 __le32 rate_n_flags; /* RATE_MCS_*, IWL_RATE_* */
1688 } rs_table[LINK_QUAL_MAX_RETRY_NUM];
1689 __le32 reserved2;
1690} __attribute__ ((packed));
1691
1692/*
1693 * REPLY_BT_CONFIG = 0x9b (command, has simple generic response)
1694 *
1695 * 3945 and 4965 support hardware handshake with Bluetooth device on
1696 * same platform. Bluetooth device alerts wireless device when it will Tx;
1697 * wireless device can delay or kill its own Tx to accomodate.
1698 */
1699struct iwl4965_bt_cmd {
1700 u8 flags;
1701 u8 lead_time;
1702 u8 max_kill;
1703 u8 reserved;
1704 __le32 kill_ack_mask;
1705 __le32 kill_cts_mask;
1706} __attribute__ ((packed));
1707
1708/******************************************************************************
1709 * (6)
1710 * Spectrum Management (802.11h) Commands, Responses, Notifications:
1711 *
1712 *****************************************************************************/
1713
1714/*
1715 * Spectrum Management
1716 */
1717#define MEASUREMENT_FILTER_FLAG (RXON_FILTER_PROMISC_MSK | \
1718 RXON_FILTER_CTL2HOST_MSK | \
1719 RXON_FILTER_ACCEPT_GRP_MSK | \
1720 RXON_FILTER_DIS_DECRYPT_MSK | \
1721 RXON_FILTER_DIS_GRP_DECRYPT_MSK | \
1722 RXON_FILTER_ASSOC_MSK | \
1723 RXON_FILTER_BCON_AWARE_MSK)
1724
1725struct iwl4965_measure_channel {
1726 __le32 duration; /* measurement duration in extended beacon
1727 * format */
1728 u8 channel; /* channel to measure */
1729 u8 type; /* see enum iwl4965_measure_type */
1730 __le16 reserved;
1731} __attribute__ ((packed));
1732
1733/*
1734 * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (command)
1735 */
1736struct iwl4965_spectrum_cmd {
1737 __le16 len; /* number of bytes starting from token */
1738 u8 token; /* token id */
1739 u8 id; /* measurement id -- 0 or 1 */
1740 u8 origin; /* 0 = TGh, 1 = other, 2 = TGk */
1741 u8 periodic; /* 1 = periodic */
1742 __le16 path_loss_timeout;
1743 __le32 start_time; /* start time in extended beacon format */
1744 __le32 reserved2;
1745 __le32 flags; /* rxon flags */
1746 __le32 filter_flags; /* rxon filter flags */
1747 __le16 channel_count; /* minimum 1, maximum 10 */
1748 __le16 reserved3;
1749 struct iwl4965_measure_channel channels[10];
1750} __attribute__ ((packed));
1751
1752/*
1753 * REPLY_SPECTRUM_MEASUREMENT_CMD = 0x74 (response)
1754 */
1755struct iwl4965_spectrum_resp {
1756 u8 token;
1757 u8 id; /* id of the prior command replaced, or 0xff */
1758 __le16 status; /* 0 - command will be handled
1759 * 1 - cannot handle (conflicts with another
1760 * measurement) */
1761} __attribute__ ((packed));
1762
1763enum iwl4965_measurement_state {
1764 IWL_MEASUREMENT_START = 0,
1765 IWL_MEASUREMENT_STOP = 1,
1766};
1767
1768enum iwl4965_measurement_status {
1769 IWL_MEASUREMENT_OK = 0,
1770 IWL_MEASUREMENT_CONCURRENT = 1,
1771 IWL_MEASUREMENT_CSA_CONFLICT = 2,
1772 IWL_MEASUREMENT_TGH_CONFLICT = 3,
1773 /* 4-5 reserved */
1774 IWL_MEASUREMENT_STOPPED = 6,
1775 IWL_MEASUREMENT_TIMEOUT = 7,
1776 IWL_MEASUREMENT_PERIODIC_FAILED = 8,
1777};
1778
1779#define NUM_ELEMENTS_IN_HISTOGRAM 8
1780
1781struct iwl4965_measurement_histogram {
1782 __le32 ofdm[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 0.8usec counts */
1783 __le32 cck[NUM_ELEMENTS_IN_HISTOGRAM]; /* in 1usec counts */
1784} __attribute__ ((packed));
1785
1786/* clear channel availability counters */
1787struct iwl4965_measurement_cca_counters {
1788 __le32 ofdm;
1789 __le32 cck;
1790} __attribute__ ((packed));
1791
1792enum iwl4965_measure_type {
1793 IWL_MEASURE_BASIC = (1 << 0),
1794 IWL_MEASURE_CHANNEL_LOAD = (1 << 1),
1795 IWL_MEASURE_HISTOGRAM_RPI = (1 << 2),
1796 IWL_MEASURE_HISTOGRAM_NOISE = (1 << 3),
1797 IWL_MEASURE_FRAME = (1 << 4),
1798 /* bits 5:6 are reserved */
1799 IWL_MEASURE_IDLE = (1 << 7),
1800};
1801
1802/*
1803 * SPECTRUM_MEASURE_NOTIFICATION = 0x75 (notification only, not a command)
1804 */
1805struct iwl4965_spectrum_notification {
1806 u8 id; /* measurement id -- 0 or 1 */
1807 u8 token;
1808 u8 channel_index; /* index in measurement channel list */
1809 u8 state; /* 0 - start, 1 - stop */
1810 __le32 start_time; /* lower 32-bits of TSF */
1811 u8 band; /* 0 - 5.2GHz, 1 - 2.4GHz */
1812 u8 channel;
1813 u8 type; /* see enum iwl4965_measurement_type */
1814 u8 reserved1;
1815 /* NOTE: cca_ofdm, cca_cck, basic_type, and histogram are only only
1816 * valid if applicable for measurement type requested. */
1817 __le32 cca_ofdm; /* cca fraction time in 40Mhz clock periods */
1818 __le32 cca_cck; /* cca fraction time in 44Mhz clock periods */
1819 __le32 cca_time; /* channel load time in usecs */
1820 u8 basic_type; /* 0 - bss, 1 - ofdm preamble, 2 -
1821 * unidentified */
1822 u8 reserved2[3];
1823 struct iwl4965_measurement_histogram histogram;
1824 __le32 stop_time; /* lower 32-bits of TSF */
1825 __le32 status; /* see iwl4965_measurement_status */
1826} __attribute__ ((packed));
1827
1828/******************************************************************************
1829 * (7)
1830 * Power Management Commands, Responses, Notifications:
1831 *
1832 *****************************************************************************/
1833
1834/**
1835 * struct iwl4965_powertable_cmd - Power Table Command
1836 * @flags: See below:
1837 *
1838 * POWER_TABLE_CMD = 0x77 (command, has simple generic response)
1839 *
1840 * PM allow:
1841 * bit 0 - '0' Driver not allow power management
1842 * '1' Driver allow PM (use rest of parameters)
1843 * uCode send sleep notifications:
1844 * bit 1 - '0' Don't send sleep notification
1845 * '1' send sleep notification (SEND_PM_NOTIFICATION)
1846 * Sleep over DTIM
1847 * bit 2 - '0' PM have to walk up every DTIM
1848 * '1' PM could sleep over DTIM till listen Interval.
1849 * PCI power managed
1850 * bit 3 - '0' (PCI_LINK_CTRL & 0x1)
1851 * '1' !(PCI_LINK_CTRL & 0x1)
1852 * Force sleep Modes
1853 * bit 31/30- '00' use both mac/xtal sleeps
1854 * '01' force Mac sleep
1855 * '10' force xtal sleep
1856 * '11' Illegal set
1857 *
1858 * NOTE: if sleep_interval[SLEEP_INTRVL_TABLE_SIZE-1] > DTIM period then
1859 * ucode assume sleep over DTIM is allowed and we don't need to wakeup
1860 * for every DTIM.
1861 */
1862#define IWL_POWER_VEC_SIZE 5
1863
1864#define IWL_POWER_DRIVER_ALLOW_SLEEP_MSK __constant_cpu_to_le16(1 << 0)
1865#define IWL_POWER_SLEEP_OVER_DTIM_MSK __constant_cpu_to_le16(1 << 2)
1866#define IWL_POWER_PCI_PM_MSK __constant_cpu_to_le16(1 << 3)
1867#define IWL_POWER_FAST_PD __constant_cpu_to_le16(1 << 4)
1868
1869struct iwl4965_powertable_cmd {
1870 __le16 flags;
1871 u8 keep_alive_seconds;
1872 u8 debug_flags;
1873 __le32 rx_data_timeout;
1874 __le32 tx_data_timeout;
1875 __le32 sleep_interval[IWL_POWER_VEC_SIZE];
1876 __le32 keep_alive_beacons;
1877} __attribute__ ((packed));
1878
1879/*
1880 * PM_SLEEP_NOTIFICATION = 0x7A (notification only, not a command)
1881 * 3945 and 4965 identical.
1882 */
1883struct iwl4965_sleep_notification {
1884 u8 pm_sleep_mode;
1885 u8 pm_wakeup_src;
1886 __le16 reserved;
1887 __le32 sleep_time;
1888 __le32 tsf_low;
1889 __le32 bcon_timer;
1890} __attribute__ ((packed));
1891
1892/* Sleep states. 3945 and 4965 identical. */
1893enum {
1894 IWL_PM_NO_SLEEP = 0,
1895 IWL_PM_SLP_MAC = 1,
1896 IWL_PM_SLP_FULL_MAC_UNASSOCIATE = 2,
1897 IWL_PM_SLP_FULL_MAC_CARD_STATE = 3,
1898 IWL_PM_SLP_PHY = 4,
1899 IWL_PM_SLP_REPENT = 5,
1900 IWL_PM_WAKEUP_BY_TIMER = 6,
1901 IWL_PM_WAKEUP_BY_DRIVER = 7,
1902 IWL_PM_WAKEUP_BY_RFKILL = 8,
1903 /* 3 reserved */
1904 IWL_PM_NUM_OF_MODES = 12,
1905};
1906
1907/*
1908 * REPLY_CARD_STATE_CMD = 0xa0 (command, has simple generic response)
1909 */
1910#define CARD_STATE_CMD_DISABLE 0x00 /* Put card to sleep */
1911#define CARD_STATE_CMD_ENABLE 0x01 /* Wake up card */
1912#define CARD_STATE_CMD_HALT 0x02 /* Power down permanently */
1913struct iwl4965_card_state_cmd {
1914 __le32 status; /* CARD_STATE_CMD_* request new power state */
1915} __attribute__ ((packed));
1916
1917/*
1918 * CARD_STATE_NOTIFICATION = 0xa1 (notification only, not a command)
1919 */
1920struct iwl4965_card_state_notif {
1921 __le32 flags;
1922} __attribute__ ((packed));
1923
1924#define HW_CARD_DISABLED 0x01
1925#define SW_CARD_DISABLED 0x02
1926#define RF_CARD_DISABLED 0x04
1927#define RXON_CARD_DISABLED 0x10
1928
1929struct iwl4965_ct_kill_config {
1930 __le32 reserved;
1931 __le32 critical_temperature_M;
1932 __le32 critical_temperature_R;
1933} __attribute__ ((packed));
1934
1935/******************************************************************************
1936 * (8)
1937 * Scan Commands, Responses, Notifications:
1938 *
1939 *****************************************************************************/
1940
1941/**
1942 * struct iwl4965_scan_channel - entry in REPLY_SCAN_CMD channel table
1943 *
1944 * One for each channel in the scan list.
1945 * Each channel can independently select:
1946 * 1) SSID for directed active scans
1947 * 2) Txpower setting (for rate specified within Tx command)
1948 * 3) How long to stay on-channel (behavior may be modified by quiet_time,
1949 * quiet_plcp_th, good_CRC_th)
1950 *
1951 * To avoid uCode errors, make sure the following are true (see comments
1952 * under struct iwl4965_scan_cmd about max_out_time and quiet_time):
1953 * 1) If using passive_dwell (i.e. passive_dwell != 0):
1954 * active_dwell <= passive_dwell (< max_out_time if max_out_time != 0)
1955 * 2) quiet_time <= active_dwell
1956 * 3) If restricting off-channel time (i.e. max_out_time !=0):
1957 * passive_dwell < max_out_time
1958 * active_dwell < max_out_time
1959 */
1960struct iwl4965_scan_channel {
1961 /*
1962 * type is defined as:
1963 * 0:0 1 = active, 0 = passive
1964 * 1:4 SSID direct bit map; if a bit is set, then corresponding
1965 * SSID IE is transmitted in probe request.
1966 * 5:7 reserved
1967 */
1968 u8 type;
1969 u8 channel; /* band is selected by iwl4965_scan_cmd "flags" field */
1970 struct iwl4965_tx_power tpc;
1971 __le16 active_dwell; /* in 1024-uSec TU (time units), typ 5-50 */
1972 __le16 passive_dwell; /* in 1024-uSec TU (time units), typ 20-500 */
1973} __attribute__ ((packed));
1974
1975/**
1976 * struct iwl4965_ssid_ie - directed scan network information element
1977 *
1978 * Up to 4 of these may appear in REPLY_SCAN_CMD, selected by "type" field
1979 * in struct iwl4965_scan_channel; each channel may select different ssids from
1980 * among the 4 entries. SSID IEs get transmitted in reverse order of entry.
1981 */
1982struct iwl4965_ssid_ie {
1983 u8 id;
1984 u8 len;
1985 u8 ssid[32];
1986} __attribute__ ((packed));
1987
1988#define PROBE_OPTION_MAX 0x4
1989#define TX_CMD_LIFE_TIME_INFINITE __constant_cpu_to_le32(0xFFFFFFFF)
1990#define IWL_GOOD_CRC_TH __constant_cpu_to_le16(1)
1991#define IWL_MAX_SCAN_SIZE 1024
1992
1993/*
1994 * REPLY_SCAN_CMD = 0x80 (command)
1995 *
1996 * The hardware scan command is very powerful; the driver can set it up to
1997 * maintain (relatively) normal network traffic while doing a scan in the
1998 * background. The max_out_time and suspend_time control the ratio of how
1999 * long the device stays on an associated network channel ("service channel")
2000 * vs. how long it's away from the service channel, i.e. tuned to other channels
2001 * for scanning.
2002 *
2003 * max_out_time is the max time off-channel (in usec), and suspend_time
2004 * is how long (in "extended beacon" format) that the scan is "suspended"
2005 * after returning to the service channel. That is, suspend_time is the
2006 * time that we stay on the service channel, doing normal work, between
2007 * scan segments. The driver may set these parameters differently to support
2008 * scanning when associated vs. not associated, and light vs. heavy traffic
2009 * loads when associated.
2010 *
2011 * After receiving this command, the device's scan engine does the following;
2012 *
2013 * 1) Sends SCAN_START notification to driver
2014 * 2) Checks to see if it has time to do scan for one channel
2015 * 3) Sends NULL packet, with power-save (PS) bit set to 1,
2016 * to tell AP that we're going off-channel
2017 * 4) Tunes to first channel in scan list, does active or passive scan
2018 * 5) Sends SCAN_RESULT notification to driver
2019 * 6) Checks to see if it has time to do scan on *next* channel in list
2020 * 7) Repeats 4-6 until it no longer has time to scan the next channel
2021 * before max_out_time expires
2022 * 8) Returns to service channel
2023 * 9) Sends NULL packet with PS=0 to tell AP that we're back
2024 * 10) Stays on service channel until suspend_time expires
2025 * 11) Repeats entire process 2-10 until list is complete
2026 * 12) Sends SCAN_COMPLETE notification
2027 *
2028 * For fast, efficient scans, the scan command also has support for staying on
2029 * a channel for just a short time, if doing active scanning and getting no
2030 * responses to the transmitted probe request. This time is controlled by
2031 * quiet_time, and the number of received packets below which a channel is
2032 * considered "quiet" is controlled by quiet_plcp_threshold.
2033 *
2034 * For active scanning on channels that have regulatory restrictions against
2035 * blindly transmitting, the scan can listen before transmitting, to make sure
2036 * that there is already legitimate activity on the channel. If enough
2037 * packets are cleanly received on the channel (controlled by good_CRC_th,
2038 * typical value 1), the scan engine starts transmitting probe requests.
2039 *
2040 * Driver must use separate scan commands for 2.4 vs. 5 GHz bands.
2041 *
2042 * To avoid uCode errors, see timing restrictions described under
2043 * struct iwl4965_scan_channel.
2044 */
2045struct iwl4965_scan_cmd {
2046 __le16 len;
2047 u8 reserved0;
2048 u8 channel_count; /* # channels in channel list */
2049 __le16 quiet_time; /* dwell only this # millisecs on quiet channel
2050 * (only for active scan) */
2051 __le16 quiet_plcp_th; /* quiet chnl is < this # pkts (typ. 1) */
2052 __le16 good_CRC_th; /* passive -> active promotion threshold */
2053 __le16 rx_chain; /* RXON_RX_CHAIN_* */
2054 __le32 max_out_time; /* max usec to be away from associated (service)
2055 * channel */
2056 __le32 suspend_time; /* pause scan this long (in "extended beacon
2057 * format") when returning to service chnl:
2058 * 3945; 31:24 # beacons, 19:0 additional usec,
2059 * 4965; 31:22 # beacons, 21:0 additional usec.
2060 */
2061 __le32 flags; /* RXON_FLG_* */
2062 __le32 filter_flags; /* RXON_FILTER_* */
2063
2064 /* For active scans (set to all-0s for passive scans).
2065 * Does not include payload. Must specify Tx rate; no rate scaling. */
2066 struct iwl4965_tx_cmd tx_cmd;
2067
2068 /* For directed active scans (set to all-0s otherwise) */
2069 struct iwl4965_ssid_ie direct_scan[PROBE_OPTION_MAX];
2070
2071 /*
2072 * Probe request frame, followed by channel list.
2073 *
2074 * Size of probe request frame is specified by byte count in tx_cmd.
2075 * Channel list follows immediately after probe request frame.
2076 * Number of channels in list is specified by channel_count.
2077 * Each channel in list is of type:
2078 *
2079 * struct iwl4965_scan_channel channels[0];
2080 *
2081 * NOTE: Only one band of channels can be scanned per pass. You
2082 * must not mix 2.4GHz channels and 5.2GHz channels, and you must wait
2083 * for one scan to complete (i.e. receive SCAN_COMPLETE_NOTIFICATION)
2084 * before requesting another scan.
2085 */
2086 u8 data[0];
2087} __attribute__ ((packed));
2088
2089/* Can abort will notify by complete notification with abort status. */
2090#define CAN_ABORT_STATUS __constant_cpu_to_le32(0x1)
2091/* complete notification statuses */
2092#define ABORT_STATUS 0x2
2093
2094/*
2095 * REPLY_SCAN_CMD = 0x80 (response)
2096 */
2097struct iwl4965_scanreq_notification {
2098 __le32 status; /* 1: okay, 2: cannot fulfill request */
2099} __attribute__ ((packed));
2100
2101/*
2102 * SCAN_START_NOTIFICATION = 0x82 (notification only, not a command)
2103 */
2104struct iwl4965_scanstart_notification {
2105 __le32 tsf_low;
2106 __le32 tsf_high;
2107 __le32 beacon_timer;
2108 u8 channel;
2109 u8 band;
2110 u8 reserved[2];
2111 __le32 status;
2112} __attribute__ ((packed));
2113
2114#define SCAN_OWNER_STATUS 0x1;
2115#define MEASURE_OWNER_STATUS 0x2;
2116
2117#define NUMBER_OF_STATISTICS 1 /* first __le32 is good CRC */
2118/*
2119 * SCAN_RESULTS_NOTIFICATION = 0x83 (notification only, not a command)
2120 */
2121struct iwl4965_scanresults_notification {
2122 u8 channel;
2123 u8 band;
2124 u8 reserved[2];
2125 __le32 tsf_low;
2126 __le32 tsf_high;
2127 __le32 statistics[NUMBER_OF_STATISTICS];
2128} __attribute__ ((packed));
2129
2130/*
2131 * SCAN_COMPLETE_NOTIFICATION = 0x84 (notification only, not a command)
2132 */
2133struct iwl4965_scancomplete_notification {
2134 u8 scanned_channels;
2135 u8 status;
2136 u8 reserved;
2137 u8 last_channel;
2138 __le32 tsf_low;
2139 __le32 tsf_high;
2140} __attribute__ ((packed));
2141
2142
2143/******************************************************************************
2144 * (9)
2145 * IBSS/AP Commands and Notifications:
2146 *
2147 *****************************************************************************/
2148
2149/*
2150 * BEACON_NOTIFICATION = 0x90 (notification only, not a command)
2151 */
2152struct iwl4965_beacon_notif {
2153 struct iwl4965_tx_resp beacon_notify_hdr;
2154 __le32 low_tsf;
2155 __le32 high_tsf;
2156 __le32 ibss_mgr_status;
2157} __attribute__ ((packed));
2158
2159/*
2160 * REPLY_TX_BEACON = 0x91 (command, has simple generic response)
2161 */
2162struct iwl4965_tx_beacon_cmd {
2163 struct iwl4965_tx_cmd tx;
2164 __le16 tim_idx;
2165 u8 tim_size;
2166 u8 reserved1;
2167 struct ieee80211_hdr frame[0]; /* beacon frame */
2168} __attribute__ ((packed));
2169
2170/******************************************************************************
2171 * (10)
2172 * Statistics Commands and Notifications:
2173 *
2174 *****************************************************************************/
2175
2176#define IWL_TEMP_CONVERT 260
2177
2178#define SUP_RATE_11A_MAX_NUM_CHANNELS 8
2179#define SUP_RATE_11B_MAX_NUM_CHANNELS 4
2180#define SUP_RATE_11G_MAX_NUM_CHANNELS 12
2181
2182/* Used for passing to driver number of successes and failures per rate */
2183struct rate_histogram {
2184 union {
2185 __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
2186 __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
2187 __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
2188 } success;
2189 union {
2190 __le32 a[SUP_RATE_11A_MAX_NUM_CHANNELS];
2191 __le32 b[SUP_RATE_11B_MAX_NUM_CHANNELS];
2192 __le32 g[SUP_RATE_11G_MAX_NUM_CHANNELS];
2193 } failed;
2194} __attribute__ ((packed));
2195
2196/* statistics command response */
2197
2198struct statistics_rx_phy {
2199 __le32 ina_cnt;
2200 __le32 fina_cnt;
2201 __le32 plcp_err;
2202 __le32 crc32_err;
2203 __le32 overrun_err;
2204 __le32 early_overrun_err;
2205 __le32 crc32_good;
2206 __le32 false_alarm_cnt;
2207 __le32 fina_sync_err_cnt;
2208 __le32 sfd_timeout;
2209 __le32 fina_timeout;
2210 __le32 unresponded_rts;
2211 __le32 rxe_frame_limit_overrun;
2212 __le32 sent_ack_cnt;
2213 __le32 sent_cts_cnt;
2214 __le32 sent_ba_rsp_cnt;
2215 __le32 dsp_self_kill;
2216 __le32 mh_format_err;
2217 __le32 re_acq_main_rssi_sum;
2218 __le32 reserved3;
2219} __attribute__ ((packed));
2220
2221struct statistics_rx_ht_phy {
2222 __le32 plcp_err;
2223 __le32 overrun_err;
2224 __le32 early_overrun_err;
2225 __le32 crc32_good;
2226 __le32 crc32_err;
2227 __le32 mh_format_err;
2228 __le32 agg_crc32_good;
2229 __le32 agg_mpdu_cnt;
2230 __le32 agg_cnt;
2231 __le32 reserved2;
2232} __attribute__ ((packed));
2233
2234struct statistics_rx_non_phy {
2235 __le32 bogus_cts; /* CTS received when not expecting CTS */
2236 __le32 bogus_ack; /* ACK received when not expecting ACK */
2237 __le32 non_bssid_frames; /* number of frames with BSSID that
2238 * doesn't belong to the STA BSSID */
2239 __le32 filtered_frames; /* count frames that were dumped in the
2240 * filtering process */
2241 __le32 non_channel_beacons; /* beacons with our bss id but not on
2242 * our serving channel */
2243 __le32 channel_beacons; /* beacons with our bss id and in our
2244 * serving channel */
2245 __le32 num_missed_bcon; /* number of missed beacons */
2246 __le32 adc_rx_saturation_time; /* count in 0.8us units the time the
2247 * ADC was in saturation */
2248 __le32 ina_detection_search_time;/* total time (in 0.8us) searched
2249 * for INA */
2250 __le32 beacon_silence_rssi_a; /* RSSI silence after beacon frame */
2251 __le32 beacon_silence_rssi_b; /* RSSI silence after beacon frame */
2252 __le32 beacon_silence_rssi_c; /* RSSI silence after beacon frame */
2253 __le32 interference_data_flag; /* flag for interference data
2254 * availability. 1 when data is
2255 * available. */
2256 __le32 channel_load; /* counts RX Enable time in uSec */
2257 __le32 dsp_false_alarms; /* DSP false alarm (both OFDM
2258 * and CCK) counter */
2259 __le32 beacon_rssi_a;
2260 __le32 beacon_rssi_b;
2261 __le32 beacon_rssi_c;
2262 __le32 beacon_energy_a;
2263 __le32 beacon_energy_b;
2264 __le32 beacon_energy_c;
2265} __attribute__ ((packed));
2266
2267struct statistics_rx {
2268 struct statistics_rx_phy ofdm;
2269 struct statistics_rx_phy cck;
2270 struct statistics_rx_non_phy general;
2271 struct statistics_rx_ht_phy ofdm_ht;
2272} __attribute__ ((packed));
2273
2274struct statistics_tx_non_phy_agg {
2275 __le32 ba_timeout;
2276 __le32 ba_reschedule_frames;
2277 __le32 scd_query_agg_frame_cnt;
2278 __le32 scd_query_no_agg;
2279 __le32 scd_query_agg;
2280 __le32 scd_query_mismatch;
2281 __le32 frame_not_ready;
2282 __le32 underrun;
2283 __le32 bt_prio_kill;
2284 __le32 rx_ba_rsp_cnt;
2285 __le32 reserved2;
2286 __le32 reserved3;
2287} __attribute__ ((packed));
2288
2289struct statistics_tx {
2290 __le32 preamble_cnt;
2291 __le32 rx_detected_cnt;
2292 __le32 bt_prio_defer_cnt;
2293 __le32 bt_prio_kill_cnt;
2294 __le32 few_bytes_cnt;
2295 __le32 cts_timeout;
2296 __le32 ack_timeout;
2297 __le32 expected_ack_cnt;
2298 __le32 actual_ack_cnt;
2299 __le32 dump_msdu_cnt;
2300 __le32 burst_abort_next_frame_mismatch_cnt;
2301 __le32 burst_abort_missing_next_frame_cnt;
2302 __le32 cts_timeout_collision;
2303 __le32 ack_or_ba_timeout_collision;
2304 struct statistics_tx_non_phy_agg agg;
2305} __attribute__ ((packed));
2306
2307struct statistics_dbg {
2308 __le32 burst_check;
2309 __le32 burst_count;
2310 __le32 reserved[4];
2311} __attribute__ ((packed));
2312
2313struct statistics_div {
2314 __le32 tx_on_a;
2315 __le32 tx_on_b;
2316 __le32 exec_time;
2317 __le32 probe_time;
2318 __le32 reserved1;
2319 __le32 reserved2;
2320} __attribute__ ((packed));
2321
2322struct statistics_general {
2323 __le32 temperature;
2324 __le32 temperature_m;
2325 struct statistics_dbg dbg;
2326 __le32 sleep_time;
2327 __le32 slots_out;
2328 __le32 slots_idle;
2329 __le32 ttl_timestamp;
2330 struct statistics_div div;
2331 __le32 rx_enable_counter;
2332 __le32 reserved1;
2333 __le32 reserved2;
2334 __le32 reserved3;
2335} __attribute__ ((packed));
2336
2337/*
2338 * REPLY_STATISTICS_CMD = 0x9c,
2339 * 3945 and 4965 identical.
2340 *
2341 * This command triggers an immediate response containing uCode statistics.
2342 * The response is in the same format as STATISTICS_NOTIFICATION 0x9d, below.
2343 *
2344 * If the CLEAR_STATS configuration flag is set, uCode will clear its
2345 * internal copy of the statistics (counters) after issuing the response.
2346 * This flag does not affect STATISTICS_NOTIFICATIONs after beacons (see below).
2347 *
2348 * If the DISABLE_NOTIF configuration flag is set, uCode will not issue
2349 * STATISTICS_NOTIFICATIONs after received beacons (see below). This flag
2350 * does not affect the response to the REPLY_STATISTICS_CMD 0x9c itself.
2351 */
2352#define IWL_STATS_CONF_CLEAR_STATS __constant_cpu_to_le32(0x1) /* see above */
2353#define IWL_STATS_CONF_DISABLE_NOTIF __constant_cpu_to_le32(0x2)/* see above */
2354struct iwl4965_statistics_cmd {
2355 __le32 configuration_flags; /* IWL_STATS_CONF_* */
2356} __attribute__ ((packed));
2357
2358/*
2359 * STATISTICS_NOTIFICATION = 0x9d (notification only, not a command)
2360 *
2361 * By default, uCode issues this notification after receiving a beacon
2362 * while associated. To disable this behavior, set DISABLE_NOTIF flag in the
2363 * REPLY_STATISTICS_CMD 0x9c, above.
2364 *
2365 * Statistics counters continue to increment beacon after beacon, but are
2366 * cleared when changing channels or when driver issues REPLY_STATISTICS_CMD
2367 * 0x9c with CLEAR_STATS bit set (see above).
2368 *
2369 * uCode also issues this notification during scans. uCode clears statistics
2370 * appropriately so that each notification contains statistics for only the
2371 * one channel that has just been scanned.
2372 */
2373#define STATISTICS_REPLY_FLG_BAND_24G_MSK __constant_cpu_to_le32(0x2)
2374#define STATISTICS_REPLY_FLG_FAT_MODE_MSK __constant_cpu_to_le32(0x8)
2375struct iwl4965_notif_statistics {
2376 __le32 flag;
2377 struct statistics_rx rx;
2378 struct statistics_tx tx;
2379 struct statistics_general general;
2380} __attribute__ ((packed));
2381
2382
2383/*
2384 * MISSED_BEACONS_NOTIFICATION = 0xa2 (notification only, not a command)
2385 */
2386/* if ucode missed CONSECUTIVE_MISSED_BCONS_TH beacons in a row,
2387 * then this notification will be sent. */
2388#define CONSECUTIVE_MISSED_BCONS_TH 20
2389
2390struct iwl4965_missed_beacon_notif {
2391 __le32 consequtive_missed_beacons;
2392 __le32 total_missed_becons;
2393 __le32 num_expected_beacons;
2394 __le32 num_recvd_beacons;
2395} __attribute__ ((packed));
2396
2397
2398/******************************************************************************
2399 * (11)
2400 * Rx Calibration Commands:
2401 *
2402 * With the uCode used for open source drivers, most Tx calibration (except
2403 * for Tx Power) and most Rx calibration is done by uCode during the
2404 * "initialize" phase of uCode boot. Driver must calibrate only:
2405 *
2406 * 1) Tx power (depends on temperature), described elsewhere
2407 * 2) Receiver gain balance (optimize MIMO, and detect disconnected antennas)
2408 * 3) Receiver sensitivity (to optimize signal detection)
2409 *
2410 *****************************************************************************/
2411
2412/**
2413 * SENSITIVITY_CMD = 0xa8 (command, has simple generic response)
2414 *
2415 * This command sets up the Rx signal detector for a sensitivity level that
2416 * is high enough to lock onto all signals within the associated network,
2417 * but low enough to ignore signals that are below a certain threshold, so as
2418 * not to have too many "false alarms". False alarms are signals that the
2419 * Rx DSP tries to lock onto, but then discards after determining that they
2420 * are noise.
2421 *
2422 * The optimum number of false alarms is between 5 and 50 per 200 TUs
2423 * (200 * 1024 uSecs, i.e. 204.8 milliseconds) of actual Rx time (i.e.
2424 * time listening, not transmitting). Driver must adjust sensitivity so that
2425 * the ratio of actual false alarms to actual Rx time falls within this range.
2426 *
2427 * While associated, uCode delivers STATISTICS_NOTIFICATIONs after each
2428 * received beacon. These provide information to the driver to analyze the
2429 * sensitivity. Don't analyze statistics that come in from scanning, or any
2430 * other non-associated-network source. Pertinent statistics include:
2431 *
2432 * From "general" statistics (struct statistics_rx_non_phy):
2433 *
2434 * (beacon_energy_[abc] & 0x0FF00) >> 8 (unsigned, higher value is lower level)
2435 * Measure of energy of desired signal. Used for establishing a level
2436 * below which the device does not detect signals.
2437 *
2438 * (beacon_silence_rssi_[abc] & 0x0FF00) >> 8 (unsigned, units in dB)
2439 * Measure of background noise in silent period after beacon.
2440 *
2441 * channel_load
2442 * uSecs of actual Rx time during beacon period (varies according to
2443 * how much time was spent transmitting).
2444 *
2445 * From "cck" and "ofdm" statistics (struct statistics_rx_phy), separately:
2446 *
2447 * false_alarm_cnt
2448 * Signal locks abandoned early (before phy-level header).
2449 *
2450 * plcp_err
2451 * Signal locks abandoned late (during phy-level header).
2452 *
2453 * NOTE: Both false_alarm_cnt and plcp_err increment monotonically from
2454 * beacon to beacon, i.e. each value is an accumulation of all errors
2455 * before and including the latest beacon. Values will wrap around to 0
2456 * after counting up to 2^32 - 1. Driver must differentiate vs.
2457 * previous beacon's values to determine # false alarms in the current
2458 * beacon period.
2459 *
2460 * Total number of false alarms = false_alarms + plcp_errs
2461 *
2462 * For OFDM, adjust the following table entries in struct iwl_sensitivity_cmd
2463 * (notice that the start points for OFDM are at or close to settings for
2464 * maximum sensitivity):
2465 *
2466 * START / MIN / MAX
2467 * HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX 90 / 85 / 120
2468 * HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX 170 / 170 / 210
2469 * HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX 105 / 105 / 140
2470 * HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX 220 / 220 / 270
2471 *
2472 * If actual rate of OFDM false alarms (+ plcp_errors) is too high
2473 * (greater than 50 for each 204.8 msecs listening), reduce sensitivity
2474 * by *adding* 1 to all 4 of the table entries above, up to the max for
2475 * each entry. Conversely, if false alarm rate is too low (less than 5
2476 * for each 204.8 msecs listening), *subtract* 1 from each entry to
2477 * increase sensitivity.
2478 *
2479 * For CCK sensitivity, keep track of the following:
2480 *
2481 * 1). 20-beacon history of maximum background noise, indicated by
2482 * (beacon_silence_rssi_[abc] & 0x0FF00), units in dB, across the
2483 * 3 receivers. For any given beacon, the "silence reference" is
2484 * the maximum of last 60 samples (20 beacons * 3 receivers).
2485 *
2486 * 2). 10-beacon history of strongest signal level, as indicated
2487 * by (beacon_energy_[abc] & 0x0FF00) >> 8, across the 3 receivers,
2488 * i.e. the strength of the signal through the best receiver at the
2489 * moment. These measurements are "upside down", with lower values
2490 * for stronger signals, so max energy will be *minimum* value.
2491 *
2492 * Then for any given beacon, the driver must determine the *weakest*
2493 * of the strongest signals; this is the minimum level that needs to be
2494 * successfully detected, when using the best receiver at the moment.
2495 * "Max cck energy" is the maximum (higher value means lower energy!)
2496 * of the last 10 minima. Once this is determined, driver must add
2497 * a little margin by adding "6" to it.
2498 *
2499 * 3). Number of consecutive beacon periods with too few false alarms.
2500 * Reset this to 0 at the first beacon period that falls within the
2501 * "good" range (5 to 50 false alarms per 204.8 milliseconds rx).
2502 *
2503 * Then, adjust the following CCK table entries in struct iwl_sensitivity_cmd
2504 * (notice that the start points for CCK are at maximum sensitivity):
2505 *
2506 * START / MIN / MAX
2507 * HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX 125 / 125 / 200
2508 * HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX 200 / 200 / 400
2509 * HD_MIN_ENERGY_CCK_DET_INDEX 100 / 0 / 100
2510 *
2511 * If actual rate of CCK false alarms (+ plcp_errors) is too high
2512 * (greater than 50 for each 204.8 msecs listening), method for reducing
2513 * sensitivity is:
2514 *
2515 * 1) *Add* 3 to value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
2516 * up to max 400.
2517 *
2518 * 2) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is < 160,
2519 * sensitivity has been reduced a significant amount; bring it up to
2520 * a moderate 161. Otherwise, *add* 3, up to max 200.
2521 *
2522 * 3) a) If current value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX is > 160,
2523 * sensitivity has been reduced only a moderate or small amount;
2524 * *subtract* 2 from value in HD_MIN_ENERGY_CCK_DET_INDEX,
2525 * down to min 0. Otherwise (if gain has been significantly reduced),
2526 * don't change the HD_MIN_ENERGY_CCK_DET_INDEX value.
2527 *
2528 * b) Save a snapshot of the "silence reference".
2529 *
2530 * If actual rate of CCK false alarms (+ plcp_errors) is too low
2531 * (less than 5 for each 204.8 msecs listening), method for increasing
2532 * sensitivity is used only if:
2533 *
2534 * 1a) Previous beacon did not have too many false alarms
2535 * 1b) AND difference between previous "silence reference" and current
2536 * "silence reference" (prev - current) is 2 or more,
2537 * OR 2) 100 or more consecutive beacon periods have had rate of
2538 * less than 5 false alarms per 204.8 milliseconds rx time.
2539 *
2540 * Method for increasing sensitivity:
2541 *
2542 * 1) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX,
2543 * down to min 125.
2544 *
2545 * 2) *Subtract* 3 from value in HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX,
2546 * down to min 200.
2547 *
2548 * 3) *Add* 2 to value in HD_MIN_ENERGY_CCK_DET_INDEX, up to max 100.
2549 *
2550 * If actual rate of CCK false alarms (+ plcp_errors) is within good range
2551 * (between 5 and 50 for each 204.8 msecs listening):
2552 *
2553 * 1) Save a snapshot of the silence reference.
2554 *
2555 * 2) If previous beacon had too many CCK false alarms (+ plcp_errors),
2556 * give some extra margin to energy threshold by *subtracting* 8
2557 * from value in HD_MIN_ENERGY_CCK_DET_INDEX.
2558 *
2559 * For all cases (too few, too many, good range), make sure that the CCK
2560 * detection threshold (energy) is below the energy level for robust
2561 * detection over the past 10 beacon periods, the "Max cck energy".
2562 * Lower values mean higher energy; this means making sure that the value
2563 * in HD_MIN_ENERGY_CCK_DET_INDEX is at or *above* "Max cck energy".
2564 *
2565 * Driver should set the following entries to fixed values:
2566 *
2567 * HD_MIN_ENERGY_OFDM_DET_INDEX 100
2568 * HD_BARKER_CORR_TH_ADD_MIN_INDEX 190
2569 * HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX 390
2570 * HD_OFDM_ENERGY_TH_IN_INDEX 62
2571 */
2572
2573/*
2574 * Table entries in SENSITIVITY_CMD (struct iwl_sensitivity_cmd)
2575 */
2576#define HD_TABLE_SIZE (11) /* number of entries */
2577#define HD_MIN_ENERGY_CCK_DET_INDEX (0) /* table indexes */
2578#define HD_MIN_ENERGY_OFDM_DET_INDEX (1)
2579#define HD_AUTO_CORR32_X1_TH_ADD_MIN_INDEX (2)
2580#define HD_AUTO_CORR32_X1_TH_ADD_MIN_MRC_INDEX (3)
2581#define HD_AUTO_CORR40_X4_TH_ADD_MIN_MRC_INDEX (4)
2582#define HD_AUTO_CORR32_X4_TH_ADD_MIN_INDEX (5)
2583#define HD_AUTO_CORR32_X4_TH_ADD_MIN_MRC_INDEX (6)
2584#define HD_BARKER_CORR_TH_ADD_MIN_INDEX (7)
2585#define HD_BARKER_CORR_TH_ADD_MIN_MRC_INDEX (8)
2586#define HD_AUTO_CORR40_X4_TH_ADD_MIN_INDEX (9)
2587#define HD_OFDM_ENERGY_TH_IN_INDEX (10)
2588
2589/* Control field in struct iwl_sensitivity_cmd */
2590#define SENSITIVITY_CMD_CONTROL_DEFAULT_TABLE __constant_cpu_to_le16(0)
2591#define SENSITIVITY_CMD_CONTROL_WORK_TABLE __constant_cpu_to_le16(1)
2592
2593/**
2594 * struct iwl_sensitivity_cmd
2595 * @control: (1) updates working table, (0) updates default table
2596 * @table: energy threshold values, use HD_* as index into table
2597 *
2598 * Always use "1" in "control" to update uCode's working table and DSP.
2599 */
2600struct iwl_sensitivity_cmd {
2601 __le16 control; /* always use "1" */
2602 __le16 table[HD_TABLE_SIZE]; /* use HD_* as index */
2603} __attribute__ ((packed));
2604
2605
2606/**
2607 * REPLY_PHY_CALIBRATION_CMD = 0xb0 (command, has simple generic response)
2608 *
2609 * This command sets the relative gains of 4965's 3 radio receiver chains.
2610 *
2611 * After the first association, driver should accumulate signal and noise
2612 * statistics from the STATISTICS_NOTIFICATIONs that follow the first 20
2613 * beacons from the associated network (don't collect statistics that come
2614 * in from scanning, or any other non-network source).
2615 *
2616 * DISCONNECTED ANTENNA:
2617 *
2618 * Driver should determine which antennas are actually connected, by comparing
2619 * average beacon signal levels for the 3 Rx chains. Accumulate (add) the
2620 * following values over 20 beacons, one accumulator for each of the chains
2621 * a/b/c, from struct statistics_rx_non_phy:
2622 *
2623 * beacon_rssi_[abc] & 0x0FF (unsigned, units in dB)
2624 *
2625 * Find the strongest signal from among a/b/c. Compare the other two to the
2626 * strongest. If any signal is more than 15 dB (times 20, unless you
2627 * divide the accumulated values by 20) below the strongest, the driver
2628 * considers that antenna to be disconnected, and should not try to use that
2629 * antenna/chain for Rx or Tx. If both A and B seem to be disconnected,
2630 * driver should declare the stronger one as connected, and attempt to use it
2631 * (A and B are the only 2 Tx chains!).
2632 *
2633 *
2634 * RX BALANCE:
2635 *
2636 * Driver should balance the 3 receivers (but just the ones that are connected
2637 * to antennas, see above) for gain, by comparing the average signal levels
2638 * detected during the silence after each beacon (background noise).
2639 * Accumulate (add) the following values over 20 beacons, one accumulator for
2640 * each of the chains a/b/c, from struct statistics_rx_non_phy:
2641 *
2642 * beacon_silence_rssi_[abc] & 0x0FF (unsigned, units in dB)
2643 *
2644 * Find the weakest background noise level from among a/b/c. This Rx chain
2645 * will be the reference, with 0 gain adjustment. Attenuate other channels by
2646 * finding noise difference:
2647 *
2648 * (accum_noise[i] - accum_noise[reference]) / 30
2649 *
2650 * The "30" adjusts the dB in the 20 accumulated samples to units of 1.5 dB.
2651 * For use in diff_gain_[abc] fields of struct iwl_calibration_cmd, the
2652 * driver should limit the difference results to a range of 0-3 (0-4.5 dB),
2653 * and set bit 2 to indicate "reduce gain". The value for the reference
2654 * (weakest) chain should be "0".
2655 *
2656 * diff_gain_[abc] bit fields:
2657 * 2: (1) reduce gain, (0) increase gain
2658 * 1-0: amount of gain, units of 1.5 dB
2659 */
2660
2661/* "Differential Gain" opcode used in REPLY_PHY_CALIBRATION_CMD. */
2662#define PHY_CALIBRATE_DIFF_GAIN_CMD (7)
2663
2664struct iwl4965_calibration_cmd {
2665 u8 opCode; /* PHY_CALIBRATE_DIFF_GAIN_CMD (7) */
2666 u8 flags; /* not used */
2667 __le16 reserved;
2668 s8 diff_gain_a; /* see above */
2669 s8 diff_gain_b;
2670 s8 diff_gain_c;
2671 u8 reserved1;
2672} __attribute__ ((packed));
2673
2674/* Phy calibration command for 5000 series */
2675
2676enum {
2677 IWL5000_PHY_CALIBRATE_DC_CMD = 8,
2678 IWL5000_PHY_CALIBRATE_LO_CMD = 9,
2679 IWL5000_PHY_CALIBRATE_RX_BB_CMD = 10,
2680 IWL5000_PHY_CALIBRATE_TX_IQ_CMD = 11,
2681 IWL5000_PHY_CALIBRATE_RX_IQ_CMD = 12,
2682 IWL5000_PHY_CALIBRATION_NOISE_CMD = 13,
2683 IWL5000_PHY_CALIBRATE_AGC_TABLE_CMD = 14,
2684 IWL5000_PHY_CALIBRATE_CRYSTAL_FRQ_CMD = 15,
2685 IWL5000_PHY_CALIBRATE_BASE_BAND_CMD = 16,
2686 IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD = 18,
2687 IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD = 19,
2688};
2689
2690struct iwl5000_calibration_chain_noise_reset_cmd {
2691 u8 op_code; /* IWL5000_PHY_CALIBRATE_CHAIN_NOISE_RESET_CMD */
2692 u8 flags; /* not used */
2693 __le16 reserved;
2694} __attribute__ ((packed));
2695
2696struct iwl5000_calibration_chain_noise_gain_cmd {
2697 u8 op_code; /* IWL5000_PHY_CALIBRATE_CHAIN_NOISE_GAIN_CMD */
2698 u8 flags; /* not used */
2699 __le16 reserved;
2700 u8 delta_gain_1;
2701 u8 delta_gain_2;
2702 __le16 reserved1;
2703} __attribute__ ((packed));
2704
2705/******************************************************************************
2706 * (12)
2707 * Miscellaneous Commands:
2708 *
2709 *****************************************************************************/
2710
2711/*
2712 * LEDs Command & Response
2713 * REPLY_LEDS_CMD = 0x48 (command, has simple generic response)
2714 *
2715 * For each of 3 possible LEDs (Activity/Link/Tech, selected by "id" field),
2716 * this command turns it on or off, or sets up a periodic blinking cycle.
2717 */
2718struct iwl4965_led_cmd {
2719 __le32 interval; /* "interval" in uSec */
2720 u8 id; /* 1: Activity, 2: Link, 3: Tech */
2721 u8 off; /* # intervals off while blinking;
2722 * "0", with >0 "on" value, turns LED on */
2723 u8 on; /* # intervals on while blinking;
2724 * "0", regardless of "off", turns LED off */
2725 u8 reserved;
2726} __attribute__ ((packed));
2727
2728/******************************************************************************
2729 * (13)
2730 * Union of all expected notifications/responses:
2731 *
2732 *****************************************************************************/
2733
2734struct iwl4965_rx_packet {
2735 __le32 len;
2736 struct iwl_cmd_header hdr;
2737 union {
2738 struct iwl4965_alive_resp alive_frame;
2739 struct iwl4965_rx_frame rx_frame;
2740 struct iwl4965_tx_resp tx_resp;
2741 struct iwl4965_spectrum_notification spectrum_notif;
2742 struct iwl4965_csa_notification csa_notif;
2743 struct iwl4965_error_resp err_resp;
2744 struct iwl4965_card_state_notif card_state_notif;
2745 struct iwl4965_beacon_notif beacon_status;
2746 struct iwl4965_add_sta_resp add_sta;
2747 struct iwl4965_sleep_notification sleep_notif;
2748 struct iwl4965_spectrum_resp spectrum;
2749 struct iwl4965_notif_statistics stats;
2750 struct iwl4965_compressed_ba_resp compressed_ba;
2751 struct iwl4965_missed_beacon_notif missed_beacon;
2752 __le32 status;
2753 u8 raw[0];
2754 } u;
2755} __attribute__ ((packed));
2756
2757#define IWL_RX_FRAME_SIZE (4 + sizeof(struct iwl4965_rx_frame))
2758
2759#endif /* __iwl4965_commands_h__ */
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