390 lines
13 KiB
C
390 lines
13 KiB
C
/******************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
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* USA
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*
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* The full GNU General Public License is included in this distribution
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* in the file called COPYING.
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*
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* Contact Information:
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* Intel Linux Wireless <linuxwifi@intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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* BSD LICENSE
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*
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* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#ifndef __fw_api_rs_h__
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#define __fw_api_rs_h__
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#include "fw-api-mac.h"
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/*
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* These serve as indexes into
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* struct iwl_rate_info fw_rate_idx_to_plcp[IWL_RATE_COUNT];
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* TODO: avoid overlap between legacy and HT rates
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*/
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enum {
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IWL_RATE_1M_INDEX = 0,
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IWL_FIRST_CCK_RATE = IWL_RATE_1M_INDEX,
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IWL_RATE_2M_INDEX,
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IWL_RATE_5M_INDEX,
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IWL_RATE_11M_INDEX,
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IWL_LAST_CCK_RATE = IWL_RATE_11M_INDEX,
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IWL_RATE_6M_INDEX,
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IWL_FIRST_OFDM_RATE = IWL_RATE_6M_INDEX,
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IWL_RATE_MCS_0_INDEX = IWL_RATE_6M_INDEX,
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IWL_FIRST_HT_RATE = IWL_RATE_MCS_0_INDEX,
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IWL_FIRST_VHT_RATE = IWL_RATE_MCS_0_INDEX,
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IWL_RATE_9M_INDEX,
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IWL_RATE_12M_INDEX,
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IWL_RATE_MCS_1_INDEX = IWL_RATE_12M_INDEX,
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IWL_RATE_18M_INDEX,
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IWL_RATE_MCS_2_INDEX = IWL_RATE_18M_INDEX,
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IWL_RATE_24M_INDEX,
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IWL_RATE_MCS_3_INDEX = IWL_RATE_24M_INDEX,
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IWL_RATE_36M_INDEX,
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IWL_RATE_MCS_4_INDEX = IWL_RATE_36M_INDEX,
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IWL_RATE_48M_INDEX,
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IWL_RATE_MCS_5_INDEX = IWL_RATE_48M_INDEX,
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IWL_RATE_54M_INDEX,
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IWL_RATE_MCS_6_INDEX = IWL_RATE_54M_INDEX,
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IWL_LAST_NON_HT_RATE = IWL_RATE_54M_INDEX,
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IWL_RATE_60M_INDEX,
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IWL_RATE_MCS_7_INDEX = IWL_RATE_60M_INDEX,
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IWL_LAST_HT_RATE = IWL_RATE_MCS_7_INDEX,
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IWL_RATE_MCS_8_INDEX,
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IWL_RATE_MCS_9_INDEX,
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IWL_LAST_VHT_RATE = IWL_RATE_MCS_9_INDEX,
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IWL_RATE_COUNT_LEGACY = IWL_LAST_NON_HT_RATE + 1,
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IWL_RATE_COUNT = IWL_LAST_VHT_RATE + 1,
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};
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#define IWL_RATE_BIT_MSK(r) BIT(IWL_RATE_##r##M_INDEX)
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/* fw API values for legacy bit rates, both OFDM and CCK */
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enum {
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IWL_RATE_6M_PLCP = 13,
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IWL_RATE_9M_PLCP = 15,
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IWL_RATE_12M_PLCP = 5,
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IWL_RATE_18M_PLCP = 7,
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IWL_RATE_24M_PLCP = 9,
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IWL_RATE_36M_PLCP = 11,
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IWL_RATE_48M_PLCP = 1,
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IWL_RATE_54M_PLCP = 3,
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IWL_RATE_1M_PLCP = 10,
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IWL_RATE_2M_PLCP = 20,
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IWL_RATE_5M_PLCP = 55,
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IWL_RATE_11M_PLCP = 110,
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IWL_RATE_INVM_PLCP = -1,
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};
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/*
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* rate_n_flags bit fields
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*
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* The 32-bit value has different layouts in the low 8 bites depending on the
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* format. There are three formats, HT, VHT and legacy (11abg, with subformats
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* for CCK and OFDM).
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*
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* High-throughput (HT) rate format
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* bit 8 is 1, bit 26 is 0, bit 9 is 0 (OFDM)
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* Very High-throughput (VHT) rate format
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* bit 8 is 0, bit 26 is 1, bit 9 is 0 (OFDM)
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* Legacy OFDM rate format for bits 7:0
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* bit 8 is 0, bit 26 is 0, bit 9 is 0 (OFDM)
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* Legacy CCK rate format for bits 7:0:
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* bit 8 is 0, bit 26 is 0, bit 9 is 1 (CCK)
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*/
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/* Bit 8: (1) HT format, (0) legacy or VHT format */
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#define RATE_MCS_HT_POS 8
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#define RATE_MCS_HT_MSK (1 << RATE_MCS_HT_POS)
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/* Bit 9: (1) CCK, (0) OFDM. HT (bit 8) must be "0" for this bit to be valid */
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#define RATE_MCS_CCK_POS 9
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#define RATE_MCS_CCK_MSK (1 << RATE_MCS_CCK_POS)
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/* Bit 26: (1) VHT format, (0) legacy format in bits 8:0 */
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#define RATE_MCS_VHT_POS 26
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#define RATE_MCS_VHT_MSK (1 << RATE_MCS_VHT_POS)
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/*
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* High-throughput (HT) rate format for bits 7:0
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*
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* 2-0: MCS rate base
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* 0) 6 Mbps
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* 1) 12 Mbps
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* 2) 18 Mbps
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* 3) 24 Mbps
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* 4) 36 Mbps
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* 5) 48 Mbps
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* 6) 54 Mbps
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* 7) 60 Mbps
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* 4-3: 0) Single stream (SISO)
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* 1) Dual stream (MIMO)
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* 2) Triple stream (MIMO)
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* 5: Value of 0x20 in bits 7:0 indicates 6 Mbps HT40 duplicate data
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* (bits 7-6 are zero)
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*
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* Together the low 5 bits work out to the MCS index because we don't
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* support MCSes above 15/23, and 0-7 have one stream, 8-15 have two
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* streams and 16-23 have three streams. We could also support MCS 32
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* which is the duplicate 20 MHz MCS (bit 5 set, all others zero.)
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*/
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#define RATE_HT_MCS_RATE_CODE_MSK 0x7
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#define RATE_HT_MCS_NSS_POS 3
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#define RATE_HT_MCS_NSS_MSK (3 << RATE_HT_MCS_NSS_POS)
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/* Bit 10: (1) Use Green Field preamble */
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#define RATE_HT_MCS_GF_POS 10
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#define RATE_HT_MCS_GF_MSK (1 << RATE_HT_MCS_GF_POS)
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#define RATE_HT_MCS_INDEX_MSK 0x3f
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/*
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* Very High-throughput (VHT) rate format for bits 7:0
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*
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* 3-0: VHT MCS (0-9)
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* 5-4: number of streams - 1:
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* 0) Single stream (SISO)
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* 1) Dual stream (MIMO)
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* 2) Triple stream (MIMO)
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*/
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/* Bit 4-5: (0) SISO, (1) MIMO2 (2) MIMO3 */
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#define RATE_VHT_MCS_RATE_CODE_MSK 0xf
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#define RATE_VHT_MCS_NSS_POS 4
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#define RATE_VHT_MCS_NSS_MSK (3 << RATE_VHT_MCS_NSS_POS)
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/*
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* Legacy OFDM rate format for bits 7:0
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*
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* 3-0: 0xD) 6 Mbps
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* 0xF) 9 Mbps
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* 0x5) 12 Mbps
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* 0x7) 18 Mbps
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* 0x9) 24 Mbps
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* 0xB) 36 Mbps
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* 0x1) 48 Mbps
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* 0x3) 54 Mbps
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* (bits 7-4 are 0)
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*
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* Legacy CCK rate format for bits 7:0:
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* bit 8 is 0, bit 26 is 0, bit 9 is 1 (CCK):
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*
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* 6-0: 10) 1 Mbps
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* 20) 2 Mbps
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* 55) 5.5 Mbps
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* 110) 11 Mbps
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* (bit 7 is 0)
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*/
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#define RATE_LEGACY_RATE_MSK 0xff
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/*
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* Bit 11-12: (0) 20MHz, (1) 40MHz, (2) 80MHz, (3) 160MHz
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* 0 and 1 are valid for HT and VHT, 2 and 3 only for VHT
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*/
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#define RATE_MCS_CHAN_WIDTH_POS 11
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#define RATE_MCS_CHAN_WIDTH_MSK (3 << RATE_MCS_CHAN_WIDTH_POS)
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#define RATE_MCS_CHAN_WIDTH_20 (0 << RATE_MCS_CHAN_WIDTH_POS)
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#define RATE_MCS_CHAN_WIDTH_40 (1 << RATE_MCS_CHAN_WIDTH_POS)
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#define RATE_MCS_CHAN_WIDTH_80 (2 << RATE_MCS_CHAN_WIDTH_POS)
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#define RATE_MCS_CHAN_WIDTH_160 (3 << RATE_MCS_CHAN_WIDTH_POS)
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/* Bit 13: (1) Short guard interval (0.4 usec), (0) normal GI (0.8 usec) */
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#define RATE_MCS_SGI_POS 13
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#define RATE_MCS_SGI_MSK (1 << RATE_MCS_SGI_POS)
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/* Bit 14-16: Antenna selection (1) Ant A, (2) Ant B, (4) Ant C */
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#define RATE_MCS_ANT_POS 14
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#define RATE_MCS_ANT_A_MSK (1 << RATE_MCS_ANT_POS)
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#define RATE_MCS_ANT_B_MSK (2 << RATE_MCS_ANT_POS)
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#define RATE_MCS_ANT_C_MSK (4 << RATE_MCS_ANT_POS)
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#define RATE_MCS_ANT_AB_MSK (RATE_MCS_ANT_A_MSK | \
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RATE_MCS_ANT_B_MSK)
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#define RATE_MCS_ANT_ABC_MSK (RATE_MCS_ANT_AB_MSK | \
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RATE_MCS_ANT_C_MSK)
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#define RATE_MCS_ANT_MSK RATE_MCS_ANT_ABC_MSK
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#define RATE_MCS_ANT_NUM 3
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/* Bit 17-18: (0) SS, (1) SS*2 */
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#define RATE_MCS_STBC_POS 17
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#define RATE_MCS_HT_STBC_MSK (3 << RATE_MCS_STBC_POS)
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#define RATE_MCS_VHT_STBC_MSK (1 << RATE_MCS_STBC_POS)
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/* Bit 19: (0) Beamforming is off, (1) Beamforming is on */
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#define RATE_MCS_BF_POS 19
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#define RATE_MCS_BF_MSK (1 << RATE_MCS_BF_POS)
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/* Bit 20: (0) ZLF is off, (1) ZLF is on */
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#define RATE_MCS_ZLF_POS 20
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#define RATE_MCS_ZLF_MSK (1 << RATE_MCS_ZLF_POS)
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/* Bit 24-25: (0) 20MHz (no dup), (1) 2x20MHz, (2) 4x20MHz, 3 8x20MHz */
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#define RATE_MCS_DUP_POS 24
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#define RATE_MCS_DUP_MSK (3 << RATE_MCS_DUP_POS)
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/* Bit 27: (1) LDPC enabled, (0) LDPC disabled */
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#define RATE_MCS_LDPC_POS 27
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#define RATE_MCS_LDPC_MSK (1 << RATE_MCS_LDPC_POS)
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/* Link Quality definitions */
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/* # entries in rate scale table to support Tx retries */
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#define LQ_MAX_RETRY_NUM 16
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/* Link quality command flags bit fields */
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/* Bit 0: (0) Don't use RTS (1) Use RTS */
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#define LQ_FLAG_USE_RTS_POS 0
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#define LQ_FLAG_USE_RTS_MSK (1 << LQ_FLAG_USE_RTS_POS)
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/* Bit 1-3: LQ command color. Used to match responses to LQ commands */
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#define LQ_FLAG_COLOR_POS 1
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#define LQ_FLAG_COLOR_MSK (7 << LQ_FLAG_COLOR_POS)
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/* Bit 4-5: Tx RTS BW Signalling
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* (0) No RTS BW signalling
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* (1) Static BW signalling
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* (2) Dynamic BW signalling
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*/
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#define LQ_FLAG_RTS_BW_SIG_POS 4
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#define LQ_FLAG_RTS_BW_SIG_NONE (0 << LQ_FLAG_RTS_BW_SIG_POS)
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#define LQ_FLAG_RTS_BW_SIG_STATIC (1 << LQ_FLAG_RTS_BW_SIG_POS)
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#define LQ_FLAG_RTS_BW_SIG_DYNAMIC (2 << LQ_FLAG_RTS_BW_SIG_POS)
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/* Bit 6: (0) No dynamic BW selection (1) Allow dynamic BW selection
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* Dyanmic BW selection allows Tx with narrower BW then requested in rates
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*/
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#define LQ_FLAG_DYNAMIC_BW_POS 6
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#define LQ_FLAG_DYNAMIC_BW_MSK (1 << LQ_FLAG_DYNAMIC_BW_POS)
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/* Single Stream Tx Parameters (lq_cmd->ss_params)
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* Flags to control a smart FW decision about whether BFER/STBC/SISO will be
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* used for single stream Tx.
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*/
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/* Bit 0-1: Max STBC streams allowed. Can be 0-3.
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* (0) - No STBC allowed
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* (1) - 2x1 STBC allowed (HT/VHT)
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* (2) - 4x2 STBC allowed (HT/VHT)
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* (3) - 3x2 STBC allowed (HT only)
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* All our chips are at most 2 antennas so only (1) is valid for now.
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*/
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#define LQ_SS_STBC_ALLOWED_POS 0
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#define LQ_SS_STBC_ALLOWED_MSK (3 << LQ_SS_STBC_ALLOWED_MSK)
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/* 2x1 STBC is allowed */
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#define LQ_SS_STBC_1SS_ALLOWED (1 << LQ_SS_STBC_ALLOWED_POS)
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/* Bit 2: Beamformer (VHT only) is allowed */
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#define LQ_SS_BFER_ALLOWED_POS 2
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#define LQ_SS_BFER_ALLOWED (1 << LQ_SS_BFER_ALLOWED_POS)
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/* Bit 3: Force BFER or STBC for testing
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* If this is set:
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* If BFER is allowed then force the ucode to choose BFER else
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* If STBC is allowed then force the ucode to choose STBC over SISO
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*/
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#define LQ_SS_FORCE_POS 3
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#define LQ_SS_FORCE (1 << LQ_SS_FORCE_POS)
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/* Bit 31: ss_params field is valid. Used for FW backward compatibility
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* with other drivers which don't support the ss_params API yet
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*/
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#define LQ_SS_PARAMS_VALID_POS 31
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#define LQ_SS_PARAMS_VALID (1 << LQ_SS_PARAMS_VALID_POS)
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/**
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* struct iwl_lq_cmd - link quality command
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* @sta_id: station to update
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* @control: not used
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* @flags: combination of LQ_FLAG_*
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* @mimo_delim: the first SISO index in rs_table, which separates MIMO
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* and SISO rates
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* @single_stream_ant_msk: best antenna for SISO (can be dual in CDD).
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* Should be ANT_[ABC]
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* @dual_stream_ant_msk: best antennas for MIMO, combination of ANT_[ABC]
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* @initial_rate_index: first index from rs_table per AC category
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* @agg_time_limit: aggregation max time threshold in usec/100, meaning
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* value of 100 is one usec. Range is 100 to 8000
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* @agg_disable_start_th: try-count threshold for starting aggregation.
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* If a frame has higher try-count, it should not be selected for
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* starting an aggregation sequence.
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* @agg_frame_cnt_limit: max frame count in an aggregation.
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* 0: no limit
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* 1: no aggregation (one frame per aggregation)
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* 2 - 0x3f: maximal number of frames (up to 3f == 63)
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* @rs_table: array of rates for each TX try, each is rate_n_flags,
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* meaning it is a combination of RATE_MCS_* and IWL_RATE_*_PLCP
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* @ss_params: single stream features. declare whether STBC or BFER are allowed.
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*/
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struct iwl_lq_cmd {
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u8 sta_id;
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u8 reduced_tpc;
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u16 control;
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/* LINK_QUAL_GENERAL_PARAMS_API_S_VER_1 */
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u8 flags;
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u8 mimo_delim;
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u8 single_stream_ant_msk;
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u8 dual_stream_ant_msk;
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u8 initial_rate_index[AC_NUM];
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/* LINK_QUAL_AGG_PARAMS_API_S_VER_1 */
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__le16 agg_time_limit;
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u8 agg_disable_start_th;
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u8 agg_frame_cnt_limit;
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__le32 reserved2;
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__le32 rs_table[LQ_MAX_RETRY_NUM];
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__le32 ss_params;
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}; /* LINK_QUALITY_CMD_API_S_VER_1 */
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#endif /* __fw_api_rs_h__ */
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