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/*
* Copyright (c) 2020, The Linux Foundation. All rights reserved.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef _VHT_SIG_A_INFO_H_
#define _VHT_SIG_A_INFO_H_
#if !defined(__ASSEMBLER__)
#endif
// ################ START SUMMARY #################
//
// Dword Fields
// 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]
// 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]
//
// ################ END SUMMARY #################
#define NUM_OF_DWORDS_VHT_SIG_A_INFO 2
struct vht_sig_a_info {
uint32_t bandwidth : 2, //[1:0]
vhta_reserved_0 : 1, //[2]
stbc : 1, //[3]
group_id : 6, //[9:4]
n_sts : 12, //[21:10]
txop_ps_not_allowed : 1, //[22]
vhta_reserved_0b : 1, //[23]
reserved_0 : 8; //[31:24]
uint32_t gi_setting : 2, //[1:0]
su_mu_coding : 1, //[2]
ldpc_extra_symbol : 1, //[3]
mcs : 4, //[7:4]
beamformed : 1, //[8]
vhta_reserved_1 : 1, //[9]
crc : 8, //[17:10]
tail : 6, //[23:18]
reserved_1 : 8; //[31:24]
};
/*
bandwidth
Packet bandwidth
<enum 0 20_MHZ_11AC>
<enum 1 40_MHZ_11AC>
<enum 2 80_MHZ_11AC>
<enum 3 160_MHZ_11AC>
<legal 0-3>
vhta_reserved_0
Reserved. Set to 1 by MAC, PHY should ignore
<legal 1>
stbc
Space time block coding:
<enum 0 stbc_disabled> Indicates STBC is disabled
<enum 1 stbc_enabled> Indicates STBC is enabled on
all streams
<legal 0-1>
group_id
In a SU VHT PPDU, if the PPDU carries MPDU(s) addressed
to an AP or to a mesh STA, the Group ID field is set to 0,
otherwise it is set to 63. In an NDP PPDU the Group ID is
set according to IEEE 802.11ac_D1.0 Section 9.30.6
(Transmission of a VHT NDP). For a MU-MIMO PPDU the Group ID
is set as in 802.11ac_D1.0 Section 22.3.11.3 (Group ID).
<legal all>
n_sts
For MU:
3 bits/user with maximum of 4 users (user u uses
vht_sig_a[0][10+3u] - vht_sig_a[0][12+3u]), u = 0, 1, 2,
3)
Set to 0 for 0 space time streams
Set to 1 for 1 space time stream
Set to 2 for 2 space time streams
Set to 3 for 3 space time streams
Set to 4 for 4 space time streams (not supported in Wifi
3.0)
Values 5-7 are reserved
In this field, references to user u should be
interpreted as MU user u. As described in the previous
chapter in this document (see chapter on User number), the
MU user value for a given client is defined for each MU
group that the client participates in. The MU user number is
not related to the internal user number that is used within
the BFer.
For SU:
vht_sig_a[0][12:10]
Set to 0 for 1 space time stream
Set to 1 for 2 space time streams
Set to 2 for 3 space time streams
Set to 3 for 4 space time streams
Set to 4 for 5 space time streams
Set to 5 for 6 space time streams
Set to 6 for 7 space time streams
Set to 7 for 8 space time streams
vht_sig_a[0][21:13]
Partial AID:
Set to the value of the TXVECTOR parameter PARTIAL_AID.
Partial AID provides an abbreviated indication of the
intended recipient(s) of the frame (see IEEE802.11ac_D1.0
Section 9.17a (Partial AID in VHT PPDUs)).
<legal all>
txop_ps_not_allowed
E_num 0 txop_ps_allowed Not supported: If set to by
VHT AP if it allows non-AP VHT STAs in TXOP power save mode
to enter Doze state during a TXOP
<enum 1 no_txop_ps_allowed> Otherwise
<legal 1>
vhta_reserved_0b
Reserved: Should be set to 1 by the MAC and ignored by
the PHY <legal 1>
reserved_0
This field is not part of HT-SIG:
Reserved: Should be set to 0 by the MAC and ignored by
the PHY <legal 0>
gi_setting
<enum 0 normal_gi> Indicates short guard interval
is not used in the data field
<enum 1 short_gi> Indicates short guard interval is
used in the data field
<enum 3 short_gi_ambiguity> Indicates short guard
interval is used in the data field and NSYM mod 10 = 9
NSYM is defined in IEEE802.11ac_D1.0 Section 22.4.3
(TXTIME and PSDU_LENGTH calculation).
<legal 0,1,3>
su_mu_coding
For an SU PPDU, B2 is set to 0 for BCC, 1 for LDPC For
an MU PPDU, if the MU[0] NSTS field is nonzero(#6773), then
B2 indicates the coding used for user 0; set to 0 for BCC
and 1 for LDPC. If the MU[0] NSTS field is 0, then this
field is reserved and set to 1
ldpc_extra_symbol
Set to 1 if the LDPC PPDU encoding process (if an SU
PPDU), or at least one LDPC user's PPDU encoding process (if
an MU PPDU), results in an extra OFDM symbol (or symbols) as
described in 22.3.10.5.4 (LDPC coding) and 22.3.10.5.5
(Encoding process for MU PPDUs). Set to 0 otherwise.
mcs
For SU:
Set to 0 for BPSK 1/2
Set to 1 for QPSK 1/2
Set to 2 for QPSK 3/4
Set to 3 for 16-QAM 1/2
Set to 4 for 16-QAM 3/4
Set to 5 for 64-QAM 2/3
Set to 6 for 64-QAM 3/4
Set to 7 for 64-QAM 5/6
Set to 8 for 256-QAM 3/4
Set to 9 for 256-QAM 5/6
For MU:
If NSTS for user 1 is non-zero, then vht_sig_a[1][4]
indicates coding for user 1: set to 0 for BCC, 1 for LDPC.
If NSTS for user 1 is set to 0, then vht_sig_a[1][4] is
reserved and set to 1.
If NSTS for user 2 is non-zero, then vht_sig_a[1][5]
indicates coding for user 2: set to 0 for BCC, 1 for LDPC.
If NSTS for user 2 is set to 0, then vht_sig_a[1][5] is
reserved and set to 1.
If NSTS for user 3 is non-zero, then vht_sig_a[1][6]
indicates coding for user 3: set to 0 for BCC, 1 for LDPC.
If NSTS for user 3 is set to 0, then vht_sig_a[1][6] is
reserved and set to 1.
vht_sig_a[1][7] is reserved and set to 1
<legal 0-15>
beamformed
For SU:
Set to 1 if a Beamforming steering matrix is applied to
the waveform in an SU transmission as described in
IEEE802.11ac_D1.0 Section 19.3.11.11.2 (Spatial mapping),
set to 0 otherwise.
For MU:
Reserved and set to 1
<legal 0-1>
vhta_reserved_1
Reserved and set to 1. <legal 1>
crc
CRC calculated as in IEEE802.11ac_D1.0 Section
19.3.9.4.4 (CRC calculation for HTSIG) with C7 in
vht_sig_a[1][10], etc. <legal all>
tail
Used to terminate the trellis of the convolutional
decoder. Set to 0. <legal 0>
reserved_1
This field is not part of HT-SIG:
Reserved: Should be set to 0 by the MAC and ignored by
the PHY <legal 0>
*/
/* Description VHT_SIG_A_INFO_0_BANDWIDTH
Packet bandwidth
<enum 0 20_MHZ_11AC>
<enum 1 40_MHZ_11AC>
<enum 2 80_MHZ_11AC>
<enum 3 160_MHZ_11AC>
<legal 0-3>
*/
#define VHT_SIG_A_INFO_0_BANDWIDTH_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_BANDWIDTH_LSB 0
#define VHT_SIG_A_INFO_0_BANDWIDTH_MASK 0x00000003
/* Description VHT_SIG_A_INFO_0_VHTA_RESERVED_0
Reserved. Set to 1 by MAC, PHY should ignore
<legal 1>
*/
#define VHT_SIG_A_INFO_0_VHTA_RESERVED_0_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_VHTA_RESERVED_0_LSB 2
#define VHT_SIG_A_INFO_0_VHTA_RESERVED_0_MASK 0x00000004
/* Description VHT_SIG_A_INFO_0_STBC
Space time block coding:
<enum 0 stbc_disabled> Indicates STBC is disabled
<enum 1 stbc_enabled> Indicates STBC is enabled on
all streams
<legal 0-1>
*/
#define VHT_SIG_A_INFO_0_STBC_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_STBC_LSB 3
#define VHT_SIG_A_INFO_0_STBC_MASK 0x00000008
/* Description VHT_SIG_A_INFO_0_GROUP_ID
In a SU VHT PPDU, if the PPDU carries MPDU(s) addressed
to an AP or to a mesh STA, the Group ID field is set to 0,
otherwise it is set to 63. In an NDP PPDU the Group ID is
set according to IEEE 802.11ac_D1.0 Section 9.30.6
(Transmission of a VHT NDP). For a MU-MIMO PPDU the Group ID
is set as in 802.11ac_D1.0 Section 22.3.11.3 (Group ID).
<legal all>
*/
#define VHT_SIG_A_INFO_0_GROUP_ID_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_GROUP_ID_LSB 4
#define VHT_SIG_A_INFO_0_GROUP_ID_MASK 0x000003f0
/* Description VHT_SIG_A_INFO_0_N_STS
For MU:
3 bits/user with maximum of 4 users (user u uses
vht_sig_a[0][10+3u] - vht_sig_a[0][12+3u]), u = 0, 1, 2,
3)
Set to 0 for 0 space time streams
Set to 1 for 1 space time stream
Set to 2 for 2 space time streams
Set to 3 for 3 space time streams
Set to 4 for 4 space time streams (not supported in Wifi
3.0)
Values 5-7 are reserved
In this field, references to user u should be
interpreted as MU user u. As described in the previous
chapter in this document (see chapter on User number), the
MU user value for a given client is defined for each MU
group that the client participates in. The MU user number is
not related to the internal user number that is used within
the BFer.
For SU:
vht_sig_a[0][12:10]
Set to 0 for 1 space time stream
Set to 1 for 2 space time streams
Set to 2 for 3 space time streams
Set to 3 for 4 space time streams
Set to 4 for 5 space time streams
Set to 5 for 6 space time streams
Set to 6 for 7 space time streams
Set to 7 for 8 space time streams
vht_sig_a[0][21:13]
Partial AID:
Set to the value of the TXVECTOR parameter PARTIAL_AID.
Partial AID provides an abbreviated indication of the
intended recipient(s) of the frame (see IEEE802.11ac_D1.0
Section 9.17a (Partial AID in VHT PPDUs)).
<legal all>
*/
#define VHT_SIG_A_INFO_0_N_STS_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_N_STS_LSB 10
#define VHT_SIG_A_INFO_0_N_STS_MASK 0x003ffc00
/* Description VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED
E_num 0 txop_ps_allowed Not supported: If set to by
VHT AP if it allows non-AP VHT STAs in TXOP power save mode
to enter Doze state during a TXOP
<enum 1 no_txop_ps_allowed> Otherwise
<legal 1>
*/
#define VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED_LSB 22
#define VHT_SIG_A_INFO_0_TXOP_PS_NOT_ALLOWED_MASK 0x00400000
/* Description VHT_SIG_A_INFO_0_VHTA_RESERVED_0B
Reserved: Should be set to 1 by the MAC and ignored by
the PHY <legal 1>
*/
#define VHT_SIG_A_INFO_0_VHTA_RESERVED_0B_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_VHTA_RESERVED_0B_LSB 23
#define VHT_SIG_A_INFO_0_VHTA_RESERVED_0B_MASK 0x00800000
/* Description VHT_SIG_A_INFO_0_RESERVED_0
This field is not part of HT-SIG:
Reserved: Should be set to 0 by the MAC and ignored by
the PHY <legal 0>
*/
#define VHT_SIG_A_INFO_0_RESERVED_0_OFFSET 0x00000000
#define VHT_SIG_A_INFO_0_RESERVED_0_LSB 24
#define VHT_SIG_A_INFO_0_RESERVED_0_MASK 0xff000000
/* Description VHT_SIG_A_INFO_1_GI_SETTING
<enum 0 normal_gi> Indicates short guard interval
is not used in the data field
<enum 1 short_gi> Indicates short guard interval is
used in the data field
<enum 3 short_gi_ambiguity> Indicates short guard
interval is used in the data field and NSYM mod 10 = 9
NSYM is defined in IEEE802.11ac_D1.0 Section 22.4.3
(TXTIME and PSDU_LENGTH calculation).
<legal 0,1,3>
*/
#define VHT_SIG_A_INFO_1_GI_SETTING_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_GI_SETTING_LSB 0
#define VHT_SIG_A_INFO_1_GI_SETTING_MASK 0x00000003
/* Description VHT_SIG_A_INFO_1_SU_MU_CODING
For an SU PPDU, B2 is set to 0 for BCC, 1 for LDPC For
an MU PPDU, if the MU[0] NSTS field is nonzero(#6773), then
B2 indicates the coding used for user 0; set to 0 for BCC
and 1 for LDPC. If the MU[0] NSTS field is 0, then this
field is reserved and set to 1
*/
#define VHT_SIG_A_INFO_1_SU_MU_CODING_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_SU_MU_CODING_LSB 2
#define VHT_SIG_A_INFO_1_SU_MU_CODING_MASK 0x00000004
/* Description VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL
Set to 1 if the LDPC PPDU encoding process (if an SU
PPDU), or at least one LDPC user's PPDU encoding process (if
an MU PPDU), results in an extra OFDM symbol (or symbols) as
described in 22.3.10.5.4 (LDPC coding) and 22.3.10.5.5
(Encoding process for MU PPDUs). Set to 0 otherwise.
*/
#define VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL_LSB 3
#define VHT_SIG_A_INFO_1_LDPC_EXTRA_SYMBOL_MASK 0x00000008
/* Description VHT_SIG_A_INFO_1_MCS
For SU:
Set to 0 for BPSK 1/2
Set to 1 for QPSK 1/2
Set to 2 for QPSK 3/4
Set to 3 for 16-QAM 1/2
Set to 4 for 16-QAM 3/4
Set to 5 for 64-QAM 2/3
Set to 6 for 64-QAM 3/4
Set to 7 for 64-QAM 5/6
Set to 8 for 256-QAM 3/4
Set to 9 for 256-QAM 5/6
For MU:
If NSTS for user 1 is non-zero, then vht_sig_a[1][4]
indicates coding for user 1: set to 0 for BCC, 1 for LDPC.
If NSTS for user 1 is set to 0, then vht_sig_a[1][4] is
reserved and set to 1.
If NSTS for user 2 is non-zero, then vht_sig_a[1][5]
indicates coding for user 2: set to 0 for BCC, 1 for LDPC.
If NSTS for user 2 is set to 0, then vht_sig_a[1][5] is
reserved and set to 1.
If NSTS for user 3 is non-zero, then vht_sig_a[1][6]
indicates coding for user 3: set to 0 for BCC, 1 for LDPC.
If NSTS for user 3 is set to 0, then vht_sig_a[1][6] is
reserved and set to 1.
vht_sig_a[1][7] is reserved and set to 1
<legal 0-15>
*/
#define VHT_SIG_A_INFO_1_MCS_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_MCS_LSB 4
#define VHT_SIG_A_INFO_1_MCS_MASK 0x000000f0
/* Description VHT_SIG_A_INFO_1_BEAMFORMED
For SU:
Set to 1 if a Beamforming steering matrix is applied to
the waveform in an SU transmission as described in
IEEE802.11ac_D1.0 Section 19.3.11.11.2 (Spatial mapping),
set to 0 otherwise.
For MU:
Reserved and set to 1
<legal 0-1>
*/
#define VHT_SIG_A_INFO_1_BEAMFORMED_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_BEAMFORMED_LSB 8
#define VHT_SIG_A_INFO_1_BEAMFORMED_MASK 0x00000100
/* Description VHT_SIG_A_INFO_1_VHTA_RESERVED_1
Reserved and set to 1. <legal 1>
*/
#define VHT_SIG_A_INFO_1_VHTA_RESERVED_1_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_VHTA_RESERVED_1_LSB 9
#define VHT_SIG_A_INFO_1_VHTA_RESERVED_1_MASK 0x00000200
/* Description VHT_SIG_A_INFO_1_CRC
CRC calculated as in IEEE802.11ac_D1.0 Section
19.3.9.4.4 (CRC calculation for HTSIG) with C7 in
vht_sig_a[1][10], etc. <legal all>
*/
#define VHT_SIG_A_INFO_1_CRC_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_CRC_LSB 10
#define VHT_SIG_A_INFO_1_CRC_MASK 0x0003fc00
/* Description VHT_SIG_A_INFO_1_TAIL
Used to terminate the trellis of the convolutional
decoder. Set to 0. <legal 0>
*/
#define VHT_SIG_A_INFO_1_TAIL_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_TAIL_LSB 18
#define VHT_SIG_A_INFO_1_TAIL_MASK 0x00fc0000
/* Description VHT_SIG_A_INFO_1_RESERVED_1
This field is not part of HT-SIG:
Reserved: Should be set to 0 by the MAC and ignored by
the PHY <legal 0>
*/
#define VHT_SIG_A_INFO_1_RESERVED_1_OFFSET 0x00000004
#define VHT_SIG_A_INFO_1_RESERVED_1_LSB 24
#define VHT_SIG_A_INFO_1_RESERVED_1_MASK 0xff000000
#endif // _VHT_SIG_A_INFO_H_
|
