xref: /wlan-driver/fw-api/hw/qca6290/11ax/v1/vht_sig_a_info.h (revision 5113495b16420b49004c444715d2daae2066e7dc)
1 /*
2  * Copyright (c) 2016-2017 The Linux Foundation. All rights reserved.
3  *
4  * Permission to use, copy, modify, and/or distribute this software for
5  * any purpose with or without fee is hereby granted, provided that the
6  * above copyright notice and this permission notice appear in all
7  * copies.
8  *
9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
10  * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
11  * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
12  * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
13  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
14  * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
15  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
16  * PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #ifndef _VHT_SIG_A_INFO_H_
20 #define _VHT_SIG_A_INFO_H_
21 #if !defined(__ASSEMBLER__)
22 #endif
23 
24 
25 // ################ START SUMMARY #################
26 //
27 //	Dword	Fields
28 //	0	bandwidth[1:0], vhta_reserved_0[2], stbc[3], group_id[9:4], n_sts[21:10], txop_ps_not_allowed[22], vhta_reserved_0b[23], reserved_0[31:24]
29 //	1	gi_setting[1:0], su_mu_coding[2], ldpc_extra_symbol[3], mcs[7:4], beamformed[8], vhta_reserved_1[9], crc[17:10], tail[23:18], reserved_1[31:24]
30 //
31 // ################ END SUMMARY #################
32 
33 #define NUM_OF_DWORDS_VHT_SIG_A_INFO 2
34 
35 struct vht_sig_a_info {
36              uint32_t bandwidth                       :  2, //[1:0]
37                       vhta_reserved_0                 :  1, //[2]
38                       stbc                            :  1, //[3]
39                       group_id                        :  6, //[9:4]
40                       n_sts                           : 12, //[21:10]
41                       txop_ps_not_allowed             :  1, //[22]
42                       vhta_reserved_0b                :  1, //[23]
43                       reserved_0                      :  8; //[31:24]
44              uint32_t gi_setting                      :  2, //[1:0]
45                       su_mu_coding                    :  1, //[2]
46                       ldpc_extra_symbol               :  1, //[3]
47                       mcs                             :  4, //[7:4]
48                       beamformed                      :  1, //[8]
49                       vhta_reserved_1                 :  1, //[9]
50                       crc                             :  8, //[17:10]
51                       tail                            :  6, //[23:18]
52                       reserved_1                      :  8; //[31:24]
53 };
54 
55 /*
56 
57 bandwidth
58 
59 			Packet bandwidth
60 
61 
62 
63 			<enum 0    20_MHZ_11AC>
64 
65 			<enum 1    40_MHZ_11AC>
66 
67 			<enum 2    80_MHZ_11AC>
68 
69 			<enum 3    160_MHZ_11AC>
70 
71 
72 
73 			<legal 0-3>
74 
75 vhta_reserved_0
76 
77 			Reserved.  Set to 1 by MAC, PHY should ignore
78 
79 			<legal 1>
80 
81 stbc
82 
83 			Space time block coding:
84 
85 			<enum 0     stbc_disabled>  Indicates STBC is disabled
86 
87 			<enum 1     stbc_enabled>  Indicates STBC is enabled on
88 			all streams
89 
90 			<legal 0-1>
91 
92 group_id
93 
94 			In a SU VHT PPDU, if the PPDU carries MPDU(s) addressed
95 			to an AP or to a mesh STA, the Group ID field is set to 0,
96 			otherwise it is set to 63.  In an NDP PPDU the Group ID is
97 			set according to IEEE 802.11ac_D1.0 Section 9.30.6
98 			(Transmission of a VHT NDP). For a MU-MIMO PPDU the Group ID
99 			is set as in 802.11ac_D1.0 Section 22.3.11.3 (Group ID).
100 			<legal all>
101 
102 n_sts
103 
104 			For MU:
105 
106 			3 bits/user with maximum of 4 users (user u uses
107 
108 			vht_sig_a[0][10+3u] - vht_sig_a[0][12+3u]), u = 0, 1, 2,
109 			3)
110 
111 			Set to 0 for 0 space time streams
112 
113 			Set to 1 for 1 space time stream
114 
115 			Set to 2 for 2 space time streams
116 
117 			Set to 3 for 3 space time streams
118 
119 			Set to 4 for 4 space time streams (not supported in Wifi
120 			3.0)
121 
122 			Values 5-7 are reserved
123 
124 			In this field, references to user u should be
125 			interpreted as MU user u. As described in the previous
126 			chapter in this document (see chapter on User number), the
127 			MU user value for a given client is defined for each MU
128 			group that the client participates in. The MU user number is
129 			not related to the internal user number that is used within
130 			the BFer.
131 
132 
133 
134 
135 
136 			For SU:
137 
138 			vht_sig_a[0][12:10]
139 
140 			Set to 0 for 1 space time stream
141 
142 			Set to 1 for 2 space time streams
143 
144 			Set to 2 for 3 space time streams
145 
146 			Set to 3 for 4 space time streams
147 
148 			Set to 4 for 5 space time streams
149 
150 			Set to 5 for 6 space time streams
151 
152 			Set to 6 for 7 space time streams
153 
154 			Set to 7 for 8 space time streams
155 
156 
157 
158 			vht_sig_a[0][21:13]
159 
160 			Partial AID:
161 
162 			Set to the value of the TXVECTOR parameter PARTIAL_AID.
163 			Partial AID provides an abbreviated indication of the
164 			intended recipient(s) of the frame (see IEEE802.11ac_D1.0
165 			Section 9.17a (Partial AID in VHT PPDUs)).
166 
167 			<legal all>
168 
169 txop_ps_not_allowed
170 
171 			E_num 0     txop_ps_allowed  Not supported: If set to by
172 			VHT AP if it allows non-AP VHT STAs in TXOP power save mode
173 			to enter Doze state during a TXOP
174 
175 			<enum 1     no_txop_ps_allowed> Otherwise
176 
177 			<legal 1>
178 
179 vhta_reserved_0b
180 
181 			Reserved: Should be set to 1 by the MAC and ignored by
182 			the PHY  <legal 1>
183 
184 reserved_0
185 
186 			This field is not part of HT-SIG:
187 
188 			Reserved: Should be set to 0 by the MAC and ignored by
189 			the PHY <legal 0>
190 
191 gi_setting
192 
193 			<enum 0     normal_gi>  Indicates short guard interval
194 			is not used in the data field
195 
196 			<enum 1     short_gi>  Indicates short guard interval is
197 			used in the data field
198 
199 			<enum 3     short_gi_ambiguity>  Indicates short guard
200 			interval is used in the data field and NSYM mod 10 = 9
201 
202 			NSYM is defined in IEEE802.11ac_D1.0 Section 22.4.3
203 			(TXTIME and PSDU_LENGTH calculation).
204 
205 			<legal 0,1,3>
206 
207 su_mu_coding
208 
209 			For an SU PPDU, B2 is set to 0 for BCC, 1 for LDPC For
210 			an MU PPDU, if the MU[0] NSTS field is nonzero(#6773), then
211 			B2 indicates the coding used for user 0; set to 0 for BCC
212 			and 1 for LDPC. If the MU[0] NSTS field is 0, then this
213 			field is reserved and set to 1
214 
215 ldpc_extra_symbol
216 
217 			Set to 1 if the LDPC PPDU encoding process (if an SU
218 			PPDU), or at least one LDPC user's PPDU encoding process (if
219 			an MU PPDU), results in an extra OFDM symbol (or symbols) as
220 			described in 22.3.10.5.4 (LDPC coding) and 22.3.10.5.5
221 			(Encoding process for MU PPDUs). Set to 0 otherwise.
222 
223 mcs
224 
225 			For SU:
226 
227 			Set to 0 for BPSK 1/2
228 
229 			Set to 1 for QPSK 1/2
230 
231 			Set to 2 for QPSK 3/4
232 
233 			Set to 3 for 16-QAM 1/2
234 
235 			Set to 4 for 16-QAM 3/4
236 
237 			Set to 5 for 64-QAM 2/3
238 
239 			Set to 6 for 64-QAM 3/4
240 
241 			Set to 7 for 64-QAM 5/6
242 
243 			Set to 8 for 256-QAM 3/4
244 
245 			Set to 9 for 256-QAM 5/6
246 
247 			For MU:
248 
249 			If NSTS for user 1 is non-zero, then vht_sig_a[1][4]
250 			indicates coding for user 1: set to 0 for BCC, 1 for LDPC.
251 
252 			If NSTS for user 1 is set to 0, then vht_sig_a[1][4] is
253 			reserved and set to 1.
254 
255 			If NSTS for user 2 is non-zero, then vht_sig_a[1][5]
256 			indicates coding for user 2: set to 0 for BCC, 1 for LDPC.
257 
258 			If NSTS for user 2 is set to 0, then vht_sig_a[1][5] is
259 			reserved and set to 1.
260 
261 			If NSTS for user 3 is non-zero, then vht_sig_a[1][6]
262 			indicates coding for user 3: set to 0 for BCC, 1 for LDPC.
263 
264 			If NSTS for user 3 is set to 0, then vht_sig_a[1][6] is
265 			reserved and set to 1.
266 
267 			vht_sig_a[1][7] is reserved and set to 1
268 
269 			<legal 0-15>
270 
271 beamformed
272 
273 			For SU:
274 
275 			Set to 1 if a Beamforming steering matrix is applied to
276 			the waveform in an SU transmission as described in
277 			IEEE802.11ac_D1.0 Section 19.3.11.11.2 (Spatial mapping),
278 			set to 0 otherwise.
279 
280 			For MU:
281 
282 			Reserved and set to 1
283 
284 			<legal 0-1>
285 
286 vhta_reserved_1
287 
288 			Reserved and set to 1.  <legal 1>
289 
290 crc
291 
292 			CRC calculated as in IEEE802.11ac_D1.0 Section
293 			19.3.9.4.4 (CRC calculation for HTSIG) with C7 in
294 			vht_sig_a[1][10], etc.  <legal all>
295 
296 tail
297 
298 			Used to terminate the trellis of the convolutional
299 			decoder.  Set to 0.  <legal 0>
300 
301 reserved_1
302 
303 			This field is not part of HT-SIG:
304 
305 			Reserved: Should be set to 0 by the MAC and ignored by
306 			the PHY <legal 0>
307 */
308 
309 
310 /* Description		VHT_SIG_A_INFO_0_BANDWIDTH
311 
312 			Packet bandwidth
313 
314 
315 
316 			<enum 0    20_MHZ_11AC>
317 
318 			<enum 1    40_MHZ_11AC>
319 
320 			<enum 2    80_MHZ_11AC>
321 
322 			<enum 3    160_MHZ_11AC>
323 
324 
325 
326 			<legal 0-3>
327 */
328 #define VHT_SIG_A_INFO_0_BANDWIDTH_OFFSET                            0x00000000
329 #define VHT_SIG_A_INFO_0_BANDWIDTH_LSB                               0
330 #define VHT_SIG_A_INFO_0_BANDWIDTH_MASK                              0x00000003
331 
332 /* Description		VHT_SIG_A_INFO_0_VHTA_RESERVED_0
333 
334 			Reserved.  Set to 1 by MAC, PHY should ignore
335 
336 			<legal 1>
337 */
338 #define VHT_SIG_A_INFO_0_VHTA_RESERVED_0_OFFSET                      0x00000000
339 #define VHT_SIG_A_INFO_0_VHTA_RESERVED_0_LSB                         2
340 #define VHT_SIG_A_INFO_0_VHTA_RESERVED_0_MASK                        0x00000004
341 
342 /* Description		VHT_SIG_A_INFO_0_STBC
343 
344 			Space time block coding:
345 
346 			<enum 0     stbc_disabled>  Indicates STBC is disabled
347 
348 			<enum 1     stbc_enabled>  Indicates STBC is enabled on
349 			all streams
350 
351 			<legal 0-1>
352 */
353 #define VHT_SIG_A_INFO_0_STBC_OFFSET                                 0x00000000
354 #define VHT_SIG_A_INFO_0_STBC_LSB                                    3
355 #define VHT_SIG_A_INFO_0_STBC_MASK                                   0x00000008
356 
357 /* Description		VHT_SIG_A_INFO_0_GROUP_ID
358 
359 			In a SU VHT PPDU, if the PPDU carries MPDU(s) addressed
360 			to an AP or to a mesh STA, the Group ID field is set to 0,
361 			otherwise it is set to 63.  In an NDP PPDU the Group ID is
362 			set according to IEEE 802.11ac_D1.0 Section 9.30.6
363 			(Transmission of a VHT NDP). For a MU-MIMO PPDU the Group ID
364 			is set as in 802.11ac_D1.0 Section 22.3.11.3 (Group ID).
365 			<legal all>
366 */
367 #define VHT_SIG_A_INFO_0_GROUP_ID_OFFSET                             0x00000000
368 #define VHT_SIG_A_INFO_0_GROUP_ID_LSB                                4
369 #define VHT_SIG_A_INFO_0_GROUP_ID_MASK                               0x000003f0
370 
371 /* Description		VHT_SIG_A_INFO_0_N_STS
372 
373 			For MU:
374 
375 			3 bits/user with maximum of 4 users (user u uses
376 
377 			vht_sig_a[0][10+3u] - vht_sig_a[0][12+3u]), u = 0, 1, 2,
378 			3)
379 
380 			Set to 0 for 0 space time streams
381 
382 			Set to 1 for 1 space time stream
383 
384 			Set to 2 for 2 space time streams
385 
386 			Set to 3 for 3 space time streams
387 
388 			Set to 4 for 4 space time streams (not supported in Wifi
389 			3.0)
390 
391 			Values 5-7 are reserved
392 
393 			In this field, references to user u should be
394 			interpreted as MU user u. As described in the previous
395 			chapter in this document (see chapter on User number), the
396 			MU user value for a given client is defined for each MU
397 			group that the client participates in. The MU user number is
398 			not related to the internal user number that is used within
399 			the BFer.
400 
401 
402 
403 
404 
405 			For SU:
406 
407 			vht_sig_a[0][12:10]
408 
409 			Set to 0 for 1 space time stream
410 
411 			Set to 1 for 2 space time streams
412 
413 			Set to 2 for 3 space time streams
414 
415 			Set to 3 for 4 space time streams
416 
417 			Set to 4 for 5 space time streams
418 
419 			Set to 5 for 6 space time streams
420 
421 			Set to 6 for 7 space time streams
422 
423 			Set to 7 for 8 space time streams
424 
425 
426 
427 			vht_sig_a[0][21:13]
428 
429 			Partial AID:
430 
431 			Set to the value of the TXVECTOR parameter PARTIAL_AID.
432 			Partial AID provides an abbreviated indication of the
433 			intended recipient(s) of the frame (see IEEE802.11ac_D1.0
434 			Section 9.17a (Partial AID in VHT PPDUs)).
435 
436 			<legal all>
437 */
438 #define VHT_SIG_A_INFO_0_N_STS_OFFSET                                0x00000000
439 #define VHT_SIG_A_INFO_0_N_STS_LSB                                   10
440 #define VHT_SIG_A_INFO_0_N_STS_MASK                                  0x003ffc00
441 
442 /* Description		VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED
443 
444 			E_num 0     txop_ps_allowed  Not supported: If set to by
445 			VHT AP if it allows non-AP VHT STAs in TXOP power save mode
446 			to enter Doze state during a TXOP
447 
448 			<enum 1     no_txop_ps_allowed> Otherwise
449 
450 			<legal 1>
451 */
452 #define VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED_OFFSET                  0x00000000
453 #define VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED_LSB                     22
454 #define VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED_MASK                    0x00400000
455 
456 /* Description		VHT_SIG_A_INFO_0_VHTA_RESERVED_0B
457 
458 			Reserved: Should be set to 1 by the MAC and ignored by
459 			the PHY  <legal 1>
460 */
461 #define VHT_SIG_A_INFO_0_VHTA_RESERVED_0B_OFFSET                     0x00000000
462 #define VHT_SIG_A_INFO_0_VHTA_RESERVED_0B_LSB                        23
463 #define VHT_SIG_A_INFO_0_VHTA_RESERVED_0B_MASK                       0x00800000
464 
465 /* Description		VHT_SIG_A_INFO_0_RESERVED_0
466 
467 			This field is not part of HT-SIG:
468 
469 			Reserved: Should be set to 0 by the MAC and ignored by
470 			the PHY <legal 0>
471 */
472 #define VHT_SIG_A_INFO_0_RESERVED_0_OFFSET                           0x00000000
473 #define VHT_SIG_A_INFO_0_RESERVED_0_LSB                              24
474 #define VHT_SIG_A_INFO_0_RESERVED_0_MASK                             0xff000000
475 
476 /* Description		VHT_SIG_A_INFO_1_GI_SETTING
477 
478 			<enum 0     normal_gi>  Indicates short guard interval
479 			is not used in the data field
480 
481 			<enum 1     short_gi>  Indicates short guard interval is
482 			used in the data field
483 
484 			<enum 3     short_gi_ambiguity>  Indicates short guard
485 			interval is used in the data field and NSYM mod 10 = 9
486 
487 			NSYM is defined in IEEE802.11ac_D1.0 Section 22.4.3
488 			(TXTIME and PSDU_LENGTH calculation).
489 
490 			<legal 0,1,3>
491 */
492 #define VHT_SIG_A_INFO_1_GI_SETTING_OFFSET                           0x00000004
493 #define VHT_SIG_A_INFO_1_GI_SETTING_LSB                              0
494 #define VHT_SIG_A_INFO_1_GI_SETTING_MASK                             0x00000003
495 
496 /* Description		VHT_SIG_A_INFO_1_SU_MU_CODING
497 
498 			For an SU PPDU, B2 is set to 0 for BCC, 1 for LDPC For
499 			an MU PPDU, if the MU[0] NSTS field is nonzero(#6773), then
500 			B2 indicates the coding used for user 0; set to 0 for BCC
501 			and 1 for LDPC. If the MU[0] NSTS field is 0, then this
502 			field is reserved and set to 1
503 */
504 #define VHT_SIG_A_INFO_1_SU_MU_CODING_OFFSET                         0x00000004
505 #define VHT_SIG_A_INFO_1_SU_MU_CODING_LSB                            2
506 #define VHT_SIG_A_INFO_1_SU_MU_CODING_MASK                           0x00000004
507 
508 /* Description		VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL
509 
510 			Set to 1 if the LDPC PPDU encoding process (if an SU
511 			PPDU), or at least one LDPC user's PPDU encoding process (if
512 			an MU PPDU), results in an extra OFDM symbol (or symbols) as
513 			described in 22.3.10.5.4 (LDPC coding) and 22.3.10.5.5
514 			(Encoding process for MU PPDUs). Set to 0 otherwise.
515 */
516 #define VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL_OFFSET                    0x00000004
517 #define VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL_LSB                       3
518 #define VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL_MASK                      0x00000008
519 
520 /* Description		VHT_SIG_A_INFO_1_MCS
521 
522 			For SU:
523 
524 			Set to 0 for BPSK 1/2
525 
526 			Set to 1 for QPSK 1/2
527 
528 			Set to 2 for QPSK 3/4
529 
530 			Set to 3 for 16-QAM 1/2
531 
532 			Set to 4 for 16-QAM 3/4
533 
534 			Set to 5 for 64-QAM 2/3
535 
536 			Set to 6 for 64-QAM 3/4
537 
538 			Set to 7 for 64-QAM 5/6
539 
540 			Set to 8 for 256-QAM 3/4
541 
542 			Set to 9 for 256-QAM 5/6
543 
544 			For MU:
545 
546 			If NSTS for user 1 is non-zero, then vht_sig_a[1][4]
547 			indicates coding for user 1: set to 0 for BCC, 1 for LDPC.
548 
549 			If NSTS for user 1 is set to 0, then vht_sig_a[1][4] is
550 			reserved and set to 1.
551 
552 			If NSTS for user 2 is non-zero, then vht_sig_a[1][5]
553 			indicates coding for user 2: set to 0 for BCC, 1 for LDPC.
554 
555 			If NSTS for user 2 is set to 0, then vht_sig_a[1][5] is
556 			reserved and set to 1.
557 
558 			If NSTS for user 3 is non-zero, then vht_sig_a[1][6]
559 			indicates coding for user 3: set to 0 for BCC, 1 for LDPC.
560 
561 			If NSTS for user 3 is set to 0, then vht_sig_a[1][6] is
562 			reserved and set to 1.
563 
564 			vht_sig_a[1][7] is reserved and set to 1
565 
566 			<legal 0-15>
567 */
568 #define VHT_SIG_A_INFO_1_MCS_OFFSET                                  0x00000004
569 #define VHT_SIG_A_INFO_1_MCS_LSB                                     4
570 #define VHT_SIG_A_INFO_1_MCS_MASK                                    0x000000f0
571 
572 /* Description		VHT_SIG_A_INFO_1_BEAMFORMED
573 
574 			For SU:
575 
576 			Set to 1 if a Beamforming steering matrix is applied to
577 			the waveform in an SU transmission as described in
578 			IEEE802.11ac_D1.0 Section 19.3.11.11.2 (Spatial mapping),
579 			set to 0 otherwise.
580 
581 			For MU:
582 
583 			Reserved and set to 1
584 
585 			<legal 0-1>
586 */
587 #define VHT_SIG_A_INFO_1_BEAMFORMED_OFFSET                           0x00000004
588 #define VHT_SIG_A_INFO_1_BEAMFORMED_LSB                              8
589 #define VHT_SIG_A_INFO_1_BEAMFORMED_MASK                             0x00000100
590 
591 /* Description		VHT_SIG_A_INFO_1_VHTA_RESERVED_1
592 
593 			Reserved and set to 1.  <legal 1>
594 */
595 #define VHT_SIG_A_INFO_1_VHTA_RESERVED_1_OFFSET                      0x00000004
596 #define VHT_SIG_A_INFO_1_VHTA_RESERVED_1_LSB                         9
597 #define VHT_SIG_A_INFO_1_VHTA_RESERVED_1_MASK                        0x00000200
598 
599 /* Description		VHT_SIG_A_INFO_1_CRC
600 
601 			CRC calculated as in IEEE802.11ac_D1.0 Section
602 			19.3.9.4.4 (CRC calculation for HTSIG) with C7 in
603 			vht_sig_a[1][10], etc.  <legal all>
604 */
605 #define VHT_SIG_A_INFO_1_CRC_OFFSET                                  0x00000004
606 #define VHT_SIG_A_INFO_1_CRC_LSB                                     10
607 #define VHT_SIG_A_INFO_1_CRC_MASK                                    0x0003fc00
608 
609 /* Description		VHT_SIG_A_INFO_1_TAIL
610 
611 			Used to terminate the trellis of the convolutional
612 			decoder.  Set to 0.  <legal 0>
613 */
614 #define VHT_SIG_A_INFO_1_TAIL_OFFSET                                 0x00000004
615 #define VHT_SIG_A_INFO_1_TAIL_LSB                                    18
616 #define VHT_SIG_A_INFO_1_TAIL_MASK                                   0x00fc0000
617 
618 /* Description		VHT_SIG_A_INFO_1_RESERVED_1
619 
620 			This field is not part of HT-SIG:
621 
622 			Reserved: Should be set to 0 by the MAC and ignored by
623 			the PHY <legal 0>
624 */
625 #define VHT_SIG_A_INFO_1_RESERVED_1_OFFSET                           0x00000004
626 #define VHT_SIG_A_INFO_1_RESERVED_1_LSB                              24
627 #define VHT_SIG_A_INFO_1_RESERVED_1_MASK                             0xff000000
628 
629 
630 #endif // _VHT_SIG_A_INFO_H_
631