6bc913bd96
This patch puts in use eeprom from iwlcore module Signed-off-by: Assaf Krauss <assaf.krauss@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1588 lines
60 KiB
C
1588 lines
60 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) 2005 - 2008 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 LICENSE.GPL.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.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) 2005 - 2008 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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*****************************************************************************/
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/*
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* Please use this file (iwl-4965-hw.h) only for hardware-related definitions.
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* Use iwl-4965-commands.h for uCode API definitions.
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* Use iwl-4965.h for driver implementation definitions.
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*/
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#ifndef __iwl_4965_hw_h__
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#define __iwl_4965_hw_h__
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/*
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* uCode queue management definitions ...
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* Queue #4 is the command queue for 3945 and 4965; map it to Tx FIFO chnl 4.
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* The first queue used for block-ack aggregation is #7 (4965 only).
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* All block-ack aggregation queues should map to Tx DMA/FIFO channel 7.
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*/
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#define IWL_CMD_QUEUE_NUM 4
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#define IWL_CMD_FIFO_NUM 4
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#define IWL_BACK_QUEUE_FIRST_ID 7
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/* Tx rates */
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#define IWL_CCK_RATES 4
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#define IWL_OFDM_RATES 8
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#define IWL_HT_RATES 16
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#define IWL_MAX_RATES (IWL_CCK_RATES+IWL_OFDM_RATES+IWL_HT_RATES)
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/* Time constants */
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#define SHORT_SLOT_TIME 9
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#define LONG_SLOT_TIME 20
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/* RSSI to dBm */
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#define IWL_RSSI_OFFSET 44
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#include "iwl-4965-commands.h"
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#define PCI_LINK_CTRL 0x0F0
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#define PCI_POWER_SOURCE 0x0C8
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#define PCI_REG_WUM8 0x0E8
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#define PCI_CFG_PMC_PME_FROM_D3COLD_SUPPORT (0x80000000)
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#define TFD_QUEUE_SIZE_MAX (256)
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#define IWL_NUM_SCAN_RATES (2)
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#define IWL_DEFAULT_TX_RETRY 15
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#define RX_QUEUE_SIZE 256
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#define RX_QUEUE_MASK 255
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#define RX_QUEUE_SIZE_LOG 8
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#define TFD_TX_CMD_SLOTS 256
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#define TFD_CMD_SLOTS 32
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#define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl4965_cmd) - \
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sizeof(struct iwl4965_cmd_meta))
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/*
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* RX related structures and functions
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*/
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#define RX_FREE_BUFFERS 64
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#define RX_LOW_WATERMARK 8
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/* Size of one Rx buffer in host DRAM */
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#define IWL_RX_BUF_SIZE_4K (4 * 1024)
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#define IWL_RX_BUF_SIZE_8K (8 * 1024)
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/* Sizes and addresses for instruction and data memory (SRAM) in
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* 4965's embedded processor. Driver access is via HBUS_TARG_MEM_* regs. */
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#define RTC_INST_LOWER_BOUND (0x000000)
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#define KDR_RTC_INST_UPPER_BOUND (0x018000)
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#define RTC_DATA_LOWER_BOUND (0x800000)
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#define KDR_RTC_DATA_UPPER_BOUND (0x80A000)
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#define KDR_RTC_INST_SIZE (KDR_RTC_INST_UPPER_BOUND - RTC_INST_LOWER_BOUND)
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#define KDR_RTC_DATA_SIZE (KDR_RTC_DATA_UPPER_BOUND - RTC_DATA_LOWER_BOUND)
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#define IWL_MAX_INST_SIZE KDR_RTC_INST_SIZE
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#define IWL_MAX_DATA_SIZE KDR_RTC_DATA_SIZE
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/* Size of uCode instruction memory in bootstrap state machine */
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#define IWL_MAX_BSM_SIZE BSM_SRAM_SIZE
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static inline int iwl4965_hw_valid_rtc_data_addr(u32 addr)
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{
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return (addr >= RTC_DATA_LOWER_BOUND) &&
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(addr < KDR_RTC_DATA_UPPER_BOUND);
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}
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/********************* START TEMPERATURE *************************************/
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/**
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* 4965 temperature calculation.
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*
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* The driver must calculate the device temperature before calculating
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* a txpower setting (amplifier gain is temperature dependent). The
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* calculation uses 4 measurements, 3 of which (R1, R2, R3) are calibration
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* values used for the life of the driver, and one of which (R4) is the
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* real-time temperature indicator.
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*
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* uCode provides all 4 values to the driver via the "initialize alive"
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* notification (see struct iwl4965_init_alive_resp). After the runtime uCode
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* image loads, uCode updates the R4 value via statistics notifications
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* (see STATISTICS_NOTIFICATION), which occur after each received beacon
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* when associated, or can be requested via REPLY_STATISTICS_CMD.
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*
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* NOTE: uCode provides the R4 value as a 23-bit signed value. Driver
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* must sign-extend to 32 bits before applying formula below.
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*
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* Formula:
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*
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* degrees Kelvin = ((97 * 259 * (R4 - R2) / (R3 - R1)) / 100) + 8
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*
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* NOTE: The basic formula is 259 * (R4-R2) / (R3-R1). The 97/100 is
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* an additional correction, which should be centered around 0 degrees
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* Celsius (273 degrees Kelvin). The 8 (3 percent of 273) compensates for
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* centering the 97/100 correction around 0 degrees K.
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*
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* Add 273 to Kelvin value to find degrees Celsius, for comparing current
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* temperature with factory-measured temperatures when calculating txpower
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* settings.
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*/
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#define TEMPERATURE_CALIB_KELVIN_OFFSET 8
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#define TEMPERATURE_CALIB_A_VAL 259
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/* Limit range of calculated temperature to be between these Kelvin values */
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#define IWL_TX_POWER_TEMPERATURE_MIN (263)
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#define IWL_TX_POWER_TEMPERATURE_MAX (410)
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#define IWL_TX_POWER_TEMPERATURE_OUT_OF_RANGE(t) \
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(((t) < IWL_TX_POWER_TEMPERATURE_MIN) || \
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((t) > IWL_TX_POWER_TEMPERATURE_MAX))
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/********************* END TEMPERATURE ***************************************/
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/********************* START TXPOWER *****************************************/
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/**
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* 4965 txpower calculations rely on information from three sources:
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*
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* 1) EEPROM
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* 2) "initialize" alive notification
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* 3) statistics notifications
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*
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* EEPROM data consists of:
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*
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* 1) Regulatory information (max txpower and channel usage flags) is provided
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* separately for each channel that can possibly supported by 4965.
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* 40 MHz wide (.11n fat) channels are listed separately from 20 MHz
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* (legacy) channels.
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*
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* See struct iwl4965_eeprom_channel for format, and struct iwl4965_eeprom
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* for locations in EEPROM.
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*
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* 2) Factory txpower calibration information is provided separately for
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* sub-bands of contiguous channels. 2.4GHz has just one sub-band,
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* but 5 GHz has several sub-bands.
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*
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* In addition, per-band (2.4 and 5 Ghz) saturation txpowers are provided.
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*
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* See struct iwl4965_eeprom_calib_info (and the tree of structures
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* contained within it) for format, and struct iwl4965_eeprom for
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* locations in EEPROM.
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*
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* "Initialization alive" notification (see struct iwl4965_init_alive_resp)
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* consists of:
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*
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* 1) Temperature calculation parameters.
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*
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* 2) Power supply voltage measurement.
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*
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* 3) Tx gain compensation to balance 2 transmitters for MIMO use.
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*
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* Statistics notifications deliver:
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*
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* 1) Current values for temperature param R4.
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*/
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/**
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* To calculate a txpower setting for a given desired target txpower, channel,
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* modulation bit rate, and transmitter chain (4965 has 2 transmitters to
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* support MIMO and transmit diversity), driver must do the following:
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*
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* 1) Compare desired txpower vs. (EEPROM) regulatory limit for this channel.
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* Do not exceed regulatory limit; reduce target txpower if necessary.
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*
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* If setting up txpowers for MIMO rates (rate indexes 8-15, 24-31),
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* 2 transmitters will be used simultaneously; driver must reduce the
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* regulatory limit by 3 dB (half-power) for each transmitter, so the
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* combined total output of the 2 transmitters is within regulatory limits.
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*
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*
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* 2) Compare target txpower vs. (EEPROM) saturation txpower *reduced by
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* backoff for this bit rate*. Do not exceed (saturation - backoff[rate]);
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* reduce target txpower if necessary.
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*
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* Backoff values below are in 1/2 dB units (equivalent to steps in
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* txpower gain tables):
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*
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* OFDM 6 - 36 MBit: 10 steps (5 dB)
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* OFDM 48 MBit: 15 steps (7.5 dB)
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* OFDM 54 MBit: 17 steps (8.5 dB)
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* OFDM 60 MBit: 20 steps (10 dB)
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* CCK all rates: 10 steps (5 dB)
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*
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* Backoff values apply to saturation txpower on a per-transmitter basis;
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* when using MIMO (2 transmitters), each transmitter uses the same
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* saturation level provided in EEPROM, and the same backoff values;
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* no reduction (such as with regulatory txpower limits) is required.
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*
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* Saturation and Backoff values apply equally to 20 Mhz (legacy) channel
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* widths and 40 Mhz (.11n fat) channel widths; there is no separate
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* factory measurement for fat channels.
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*
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* The result of this step is the final target txpower. The rest of
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* the steps figure out the proper settings for the device to achieve
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* that target txpower.
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*
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*
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* 3) Determine (EEPROM) calibration subband for the target channel, by
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* comparing against first and last channels in each subband
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* (see struct iwl4965_eeprom_calib_subband_info).
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*
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*
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* 4) Linearly interpolate (EEPROM) factory calibration measurement sets,
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* referencing the 2 factory-measured (sample) channels within the subband.
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*
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* Interpolation is based on difference between target channel's frequency
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* and the sample channels' frequencies. Since channel numbers are based
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* on frequency (5 MHz between each channel number), this is equivalent
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* to interpolating based on channel number differences.
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*
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* Note that the sample channels may or may not be the channels at the
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* edges of the subband. The target channel may be "outside" of the
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* span of the sampled channels.
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*
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* Driver may choose the pair (for 2 Tx chains) of measurements (see
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* struct iwl4965_eeprom_calib_ch_info) for which the actual measured
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* txpower comes closest to the desired txpower. Usually, though,
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* the middle set of measurements is closest to the regulatory limits,
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* and is therefore a good choice for all txpower calculations (this
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* assumes that high accuracy is needed for maximizing legal txpower,
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* while lower txpower configurations do not need as much accuracy).
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*
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* Driver should interpolate both members of the chosen measurement pair,
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* i.e. for both Tx chains (radio transmitters), unless the driver knows
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* that only one of the chains will be used (e.g. only one tx antenna
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* connected, but this should be unusual). The rate scaling algorithm
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* switches antennas to find best performance, so both Tx chains will
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* be used (although only one at a time) even for non-MIMO transmissions.
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*
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* Driver should interpolate factory values for temperature, gain table
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* index, and actual power. The power amplifier detector values are
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* not used by the driver.
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*
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* Sanity check: If the target channel happens to be one of the sample
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* channels, the results should agree with the sample channel's
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* measurements!
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*
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*
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* 5) Find difference between desired txpower and (interpolated)
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* factory-measured txpower. Using (interpolated) factory gain table index
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* (shown elsewhere) as a starting point, adjust this index lower to
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* increase txpower, or higher to decrease txpower, until the target
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* txpower is reached. Each step in the gain table is 1/2 dB.
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*
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* For example, if factory measured txpower is 16 dBm, and target txpower
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* is 13 dBm, add 6 steps to the factory gain index to reduce txpower
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* by 3 dB.
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*
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*
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* 6) Find difference between current device temperature and (interpolated)
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* factory-measured temperature for sub-band. Factory values are in
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* degrees Celsius. To calculate current temperature, see comments for
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* "4965 temperature calculation".
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*
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* If current temperature is higher than factory temperature, driver must
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* increase gain (lower gain table index), and vice versa.
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*
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* Temperature affects gain differently for different channels:
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*
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* 2.4 GHz all channels: 3.5 degrees per half-dB step
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* 5 GHz channels 34-43: 4.5 degrees per half-dB step
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* 5 GHz channels >= 44: 4.0 degrees per half-dB step
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*
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* NOTE: Temperature can increase rapidly when transmitting, especially
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* with heavy traffic at high txpowers. Driver should update
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* temperature calculations often under these conditions to
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* maintain strong txpower in the face of rising temperature.
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*
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*
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* 7) Find difference between current power supply voltage indicator
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* (from "initialize alive") and factory-measured power supply voltage
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* indicator (EEPROM).
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*
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* If the current voltage is higher (indicator is lower) than factory
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* voltage, gain should be reduced (gain table index increased) by:
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*
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* (eeprom - current) / 7
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*
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* If the current voltage is lower (indicator is higher) than factory
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* voltage, gain should be increased (gain table index decreased) by:
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*
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* 2 * (current - eeprom) / 7
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*
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* If number of index steps in either direction turns out to be > 2,
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* something is wrong ... just use 0.
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*
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* NOTE: Voltage compensation is independent of band/channel.
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*
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* NOTE: "Initialize" uCode measures current voltage, which is assumed
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* to be constant after this initial measurement. Voltage
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* compensation for txpower (number of steps in gain table)
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* may be calculated once and used until the next uCode bootload.
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*
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*
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* 8) If setting up txpowers for MIMO rates (rate indexes 8-15, 24-31),
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* adjust txpower for each transmitter chain, so txpower is balanced
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* between the two chains. There are 5 pairs of tx_atten[group][chain]
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* values in "initialize alive", one pair for each of 5 channel ranges:
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*
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* Group 0: 5 GHz channel 34-43
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* Group 1: 5 GHz channel 44-70
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* Group 2: 5 GHz channel 71-124
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* Group 3: 5 GHz channel 125-200
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* Group 4: 2.4 GHz all channels
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*
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* Add the tx_atten[group][chain] value to the index for the target chain.
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* The values are signed, but are in pairs of 0 and a non-negative number,
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* so as to reduce gain (if necessary) of the "hotter" channel. This
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* avoids any need to double-check for regulatory compliance after
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* this step.
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*
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*
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* 9) If setting up for a CCK rate, lower the gain by adding a CCK compensation
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* value to the index:
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*
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* Hardware rev B: 9 steps (4.5 dB)
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* Hardware rev C: 5 steps (2.5 dB)
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*
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* Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG,
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* bits [3:2], 1 = B, 2 = C.
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*
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* NOTE: This compensation is in addition to any saturation backoff that
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* might have been applied in an earlier step.
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*
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*
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* 10) Select the gain table, based on band (2.4 vs 5 GHz).
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*
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* Limit the adjusted index to stay within the table!
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*
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*
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* 11) Read gain table entries for DSP and radio gain, place into appropriate
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* location(s) in command (struct iwl4965_txpowertable_cmd).
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*/
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/* Limit range of txpower output target to be between these values */
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#define IWL_TX_POWER_TARGET_POWER_MIN (0) /* 0 dBm = 1 milliwatt */
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#define IWL_TX_POWER_TARGET_POWER_MAX (16) /* 16 dBm */
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/**
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* When MIMO is used (2 transmitters operating simultaneously), driver should
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* limit each transmitter to deliver a max of 3 dB below the regulatory limit
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* for the device. That is, use half power for each transmitter, so total
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* txpower is within regulatory limits.
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*
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* The value "6" represents number of steps in gain table to reduce power 3 dB.
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* Each step is 1/2 dB.
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*/
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#define IWL_TX_POWER_MIMO_REGULATORY_COMPENSATION (6)
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/**
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* CCK gain compensation.
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*
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* When calculating txpowers for CCK, after making sure that the target power
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* is within regulatory and saturation limits, driver must additionally
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* back off gain by adding these values to the gain table index.
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*
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* Hardware rev for 4965 can be determined by reading CSR_HW_REV_WA_REG,
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* bits [3:2], 1 = B, 2 = C.
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*/
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#define IWL_TX_POWER_CCK_COMPENSATION_B_STEP (9)
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#define IWL_TX_POWER_CCK_COMPENSATION_C_STEP (5)
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/*
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* 4965 power supply voltage compensation for txpower
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*/
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#define TX_POWER_IWL_VOLTAGE_CODES_PER_03V (7)
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/**
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* Gain tables.
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*
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* The following tables contain pair of values for setting txpower, i.e.
|
|
* gain settings for the output of the device's digital signal processor (DSP),
|
|
* and for the analog gain structure of the transmitter.
|
|
*
|
|
* Each entry in the gain tables represents a step of 1/2 dB. Note that these
|
|
* are *relative* steps, not indications of absolute output power. Output
|
|
* power varies with temperature, voltage, and channel frequency, and also
|
|
* requires consideration of average power (to satisfy regulatory constraints),
|
|
* and peak power (to avoid distortion of the output signal).
|
|
*
|
|
* Each entry contains two values:
|
|
* 1) DSP gain (or sometimes called DSP attenuation). This is a fine-grained
|
|
* linear value that multiplies the output of the digital signal processor,
|
|
* before being sent to the analog radio.
|
|
* 2) Radio gain. This sets the analog gain of the radio Tx path.
|
|
* It is a coarser setting, and behaves in a logarithmic (dB) fashion.
|
|
*
|
|
* EEPROM contains factory calibration data for txpower. This maps actual
|
|
* measured txpower levels to gain settings in the "well known" tables
|
|
* below ("well-known" means here that both factory calibration *and* the
|
|
* driver work with the same table).
|
|
*
|
|
* There are separate tables for 2.4 GHz and 5 GHz bands. The 5 GHz table
|
|
* has an extension (into negative indexes), in case the driver needs to
|
|
* boost power setting for high device temperatures (higher than would be
|
|
* present during factory calibration). A 5 Ghz EEPROM index of "40"
|
|
* corresponds to the 49th entry in the table used by the driver.
|
|
*/
|
|
#define MIN_TX_GAIN_INDEX (0) /* highest gain, lowest idx, 2.4 */
|
|
#define MIN_TX_GAIN_INDEX_52GHZ_EXT (-9) /* highest gain, lowest idx, 5 */
|
|
|
|
/**
|
|
* 2.4 GHz gain table
|
|
*
|
|
* Index Dsp gain Radio gain
|
|
* 0 110 0x3f (highest gain)
|
|
* 1 104 0x3f
|
|
* 2 98 0x3f
|
|
* 3 110 0x3e
|
|
* 4 104 0x3e
|
|
* 5 98 0x3e
|
|
* 6 110 0x3d
|
|
* 7 104 0x3d
|
|
* 8 98 0x3d
|
|
* 9 110 0x3c
|
|
* 10 104 0x3c
|
|
* 11 98 0x3c
|
|
* 12 110 0x3b
|
|
* 13 104 0x3b
|
|
* 14 98 0x3b
|
|
* 15 110 0x3a
|
|
* 16 104 0x3a
|
|
* 17 98 0x3a
|
|
* 18 110 0x39
|
|
* 19 104 0x39
|
|
* 20 98 0x39
|
|
* 21 110 0x38
|
|
* 22 104 0x38
|
|
* 23 98 0x38
|
|
* 24 110 0x37
|
|
* 25 104 0x37
|
|
* 26 98 0x37
|
|
* 27 110 0x36
|
|
* 28 104 0x36
|
|
* 29 98 0x36
|
|
* 30 110 0x35
|
|
* 31 104 0x35
|
|
* 32 98 0x35
|
|
* 33 110 0x34
|
|
* 34 104 0x34
|
|
* 35 98 0x34
|
|
* 36 110 0x33
|
|
* 37 104 0x33
|
|
* 38 98 0x33
|
|
* 39 110 0x32
|
|
* 40 104 0x32
|
|
* 41 98 0x32
|
|
* 42 110 0x31
|
|
* 43 104 0x31
|
|
* 44 98 0x31
|
|
* 45 110 0x30
|
|
* 46 104 0x30
|
|
* 47 98 0x30
|
|
* 48 110 0x6
|
|
* 49 104 0x6
|
|
* 50 98 0x6
|
|
* 51 110 0x5
|
|
* 52 104 0x5
|
|
* 53 98 0x5
|
|
* 54 110 0x4
|
|
* 55 104 0x4
|
|
* 56 98 0x4
|
|
* 57 110 0x3
|
|
* 58 104 0x3
|
|
* 59 98 0x3
|
|
* 60 110 0x2
|
|
* 61 104 0x2
|
|
* 62 98 0x2
|
|
* 63 110 0x1
|
|
* 64 104 0x1
|
|
* 65 98 0x1
|
|
* 66 110 0x0
|
|
* 67 104 0x0
|
|
* 68 98 0x0
|
|
* 69 97 0
|
|
* 70 96 0
|
|
* 71 95 0
|
|
* 72 94 0
|
|
* 73 93 0
|
|
* 74 92 0
|
|
* 75 91 0
|
|
* 76 90 0
|
|
* 77 89 0
|
|
* 78 88 0
|
|
* 79 87 0
|
|
* 80 86 0
|
|
* 81 85 0
|
|
* 82 84 0
|
|
* 83 83 0
|
|
* 84 82 0
|
|
* 85 81 0
|
|
* 86 80 0
|
|
* 87 79 0
|
|
* 88 78 0
|
|
* 89 77 0
|
|
* 90 76 0
|
|
* 91 75 0
|
|
* 92 74 0
|
|
* 93 73 0
|
|
* 94 72 0
|
|
* 95 71 0
|
|
* 96 70 0
|
|
* 97 69 0
|
|
* 98 68 0
|
|
*/
|
|
|
|
/**
|
|
* 5 GHz gain table
|
|
*
|
|
* Index Dsp gain Radio gain
|
|
* -9 123 0x3F (highest gain)
|
|
* -8 117 0x3F
|
|
* -7 110 0x3F
|
|
* -6 104 0x3F
|
|
* -5 98 0x3F
|
|
* -4 110 0x3E
|
|
* -3 104 0x3E
|
|
* -2 98 0x3E
|
|
* -1 110 0x3D
|
|
* 0 104 0x3D
|
|
* 1 98 0x3D
|
|
* 2 110 0x3C
|
|
* 3 104 0x3C
|
|
* 4 98 0x3C
|
|
* 5 110 0x3B
|
|
* 6 104 0x3B
|
|
* 7 98 0x3B
|
|
* 8 110 0x3A
|
|
* 9 104 0x3A
|
|
* 10 98 0x3A
|
|
* 11 110 0x39
|
|
* 12 104 0x39
|
|
* 13 98 0x39
|
|
* 14 110 0x38
|
|
* 15 104 0x38
|
|
* 16 98 0x38
|
|
* 17 110 0x37
|
|
* 18 104 0x37
|
|
* 19 98 0x37
|
|
* 20 110 0x36
|
|
* 21 104 0x36
|
|
* 22 98 0x36
|
|
* 23 110 0x35
|
|
* 24 104 0x35
|
|
* 25 98 0x35
|
|
* 26 110 0x34
|
|
* 27 104 0x34
|
|
* 28 98 0x34
|
|
* 29 110 0x33
|
|
* 30 104 0x33
|
|
* 31 98 0x33
|
|
* 32 110 0x32
|
|
* 33 104 0x32
|
|
* 34 98 0x32
|
|
* 35 110 0x31
|
|
* 36 104 0x31
|
|
* 37 98 0x31
|
|
* 38 110 0x30
|
|
* 39 104 0x30
|
|
* 40 98 0x30
|
|
* 41 110 0x25
|
|
* 42 104 0x25
|
|
* 43 98 0x25
|
|
* 44 110 0x24
|
|
* 45 104 0x24
|
|
* 46 98 0x24
|
|
* 47 110 0x23
|
|
* 48 104 0x23
|
|
* 49 98 0x23
|
|
* 50 110 0x22
|
|
* 51 104 0x18
|
|
* 52 98 0x18
|
|
* 53 110 0x17
|
|
* 54 104 0x17
|
|
* 55 98 0x17
|
|
* 56 110 0x16
|
|
* 57 104 0x16
|
|
* 58 98 0x16
|
|
* 59 110 0x15
|
|
* 60 104 0x15
|
|
* 61 98 0x15
|
|
* 62 110 0x14
|
|
* 63 104 0x14
|
|
* 64 98 0x14
|
|
* 65 110 0x13
|
|
* 66 104 0x13
|
|
* 67 98 0x13
|
|
* 68 110 0x12
|
|
* 69 104 0x08
|
|
* 70 98 0x08
|
|
* 71 110 0x07
|
|
* 72 104 0x07
|
|
* 73 98 0x07
|
|
* 74 110 0x06
|
|
* 75 104 0x06
|
|
* 76 98 0x06
|
|
* 77 110 0x05
|
|
* 78 104 0x05
|
|
* 79 98 0x05
|
|
* 80 110 0x04
|
|
* 81 104 0x04
|
|
* 82 98 0x04
|
|
* 83 110 0x03
|
|
* 84 104 0x03
|
|
* 85 98 0x03
|
|
* 86 110 0x02
|
|
* 87 104 0x02
|
|
* 88 98 0x02
|
|
* 89 110 0x01
|
|
* 90 104 0x01
|
|
* 91 98 0x01
|
|
* 92 110 0x00
|
|
* 93 104 0x00
|
|
* 94 98 0x00
|
|
* 95 93 0x00
|
|
* 96 88 0x00
|
|
* 97 83 0x00
|
|
* 98 78 0x00
|
|
*/
|
|
|
|
|
|
/**
|
|
* Sanity checks and default values for EEPROM regulatory levels.
|
|
* If EEPROM values fall outside MIN/MAX range, use default values.
|
|
*
|
|
* Regulatory limits refer to the maximum average txpower allowed by
|
|
* regulatory agencies in the geographies in which the device is meant
|
|
* to be operated. These limits are SKU-specific (i.e. geography-specific),
|
|
* and channel-specific; each channel has an individual regulatory limit
|
|
* listed in the EEPROM.
|
|
*
|
|
* Units are in half-dBm (i.e. "34" means 17 dBm).
|
|
*/
|
|
#define IWL_TX_POWER_DEFAULT_REGULATORY_24 (34)
|
|
#define IWL_TX_POWER_DEFAULT_REGULATORY_52 (34)
|
|
#define IWL_TX_POWER_REGULATORY_MIN (0)
|
|
#define IWL_TX_POWER_REGULATORY_MAX (34)
|
|
|
|
/**
|
|
* Sanity checks and default values for EEPROM saturation levels.
|
|
* If EEPROM values fall outside MIN/MAX range, use default values.
|
|
*
|
|
* Saturation is the highest level that the output power amplifier can produce
|
|
* without significant clipping distortion. This is a "peak" power level.
|
|
* Different types of modulation (i.e. various "rates", and OFDM vs. CCK)
|
|
* require differing amounts of backoff, relative to their average power output,
|
|
* in order to avoid clipping distortion.
|
|
*
|
|
* Driver must make sure that it is violating neither the saturation limit,
|
|
* nor the regulatory limit, when calculating Tx power settings for various
|
|
* rates.
|
|
*
|
|
* Units are in half-dBm (i.e. "38" means 19 dBm).
|
|
*/
|
|
#define IWL_TX_POWER_DEFAULT_SATURATION_24 (38)
|
|
#define IWL_TX_POWER_DEFAULT_SATURATION_52 (38)
|
|
#define IWL_TX_POWER_SATURATION_MIN (20)
|
|
#define IWL_TX_POWER_SATURATION_MAX (50)
|
|
|
|
/**
|
|
* Channel groups used for Tx Attenuation calibration (MIMO tx channel balance)
|
|
* and thermal Txpower calibration.
|
|
*
|
|
* When calculating txpower, driver must compensate for current device
|
|
* temperature; higher temperature requires higher gain. Driver must calculate
|
|
* current temperature (see "4965 temperature calculation"), then compare vs.
|
|
* factory calibration temperature in EEPROM; if current temperature is higher
|
|
* than factory temperature, driver must *increase* gain by proportions shown
|
|
* in table below. If current temperature is lower than factory, driver must
|
|
* *decrease* gain.
|
|
*
|
|
* Different frequency ranges require different compensation, as shown below.
|
|
*/
|
|
/* Group 0, 5.2 GHz ch 34-43: 4.5 degrees per 1/2 dB. */
|
|
#define CALIB_IWL_TX_ATTEN_GR1_FCH 34
|
|
#define CALIB_IWL_TX_ATTEN_GR1_LCH 43
|
|
|
|
/* Group 1, 5.3 GHz ch 44-70: 4.0 degrees per 1/2 dB. */
|
|
#define CALIB_IWL_TX_ATTEN_GR2_FCH 44
|
|
#define CALIB_IWL_TX_ATTEN_GR2_LCH 70
|
|
|
|
/* Group 2, 5.5 GHz ch 71-124: 4.0 degrees per 1/2 dB. */
|
|
#define CALIB_IWL_TX_ATTEN_GR3_FCH 71
|
|
#define CALIB_IWL_TX_ATTEN_GR3_LCH 124
|
|
|
|
/* Group 3, 5.7 GHz ch 125-200: 4.0 degrees per 1/2 dB. */
|
|
#define CALIB_IWL_TX_ATTEN_GR4_FCH 125
|
|
#define CALIB_IWL_TX_ATTEN_GR4_LCH 200
|
|
|
|
/* Group 4, 2.4 GHz all channels: 3.5 degrees per 1/2 dB. */
|
|
#define CALIB_IWL_TX_ATTEN_GR5_FCH 1
|
|
#define CALIB_IWL_TX_ATTEN_GR5_LCH 20
|
|
|
|
enum {
|
|
CALIB_CH_GROUP_1 = 0,
|
|
CALIB_CH_GROUP_2 = 1,
|
|
CALIB_CH_GROUP_3 = 2,
|
|
CALIB_CH_GROUP_4 = 3,
|
|
CALIB_CH_GROUP_5 = 4,
|
|
CALIB_CH_GROUP_MAX
|
|
};
|
|
|
|
/********************* END TXPOWER *****************************************/
|
|
|
|
/****************************/
|
|
/* Flow Handler Definitions */
|
|
/****************************/
|
|
|
|
/**
|
|
* This I/O area is directly read/writable by driver (e.g. Linux uses writel())
|
|
* Addresses are offsets from device's PCI hardware base address.
|
|
*/
|
|
#define FH_MEM_LOWER_BOUND (0x1000)
|
|
#define FH_MEM_UPPER_BOUND (0x1EF0)
|
|
|
|
/**
|
|
* Keep-Warm (KW) buffer base address.
|
|
*
|
|
* Driver must allocate a 4KByte buffer that is used by 4965 for keeping the
|
|
* host DRAM powered on (via dummy accesses to DRAM) to maintain low-latency
|
|
* DRAM access when 4965 is Txing or Rxing. The dummy accesses prevent host
|
|
* from going into a power-savings mode that would cause higher DRAM latency,
|
|
* and possible data over/under-runs, before all Tx/Rx is complete.
|
|
*
|
|
* Driver loads IWL_FH_KW_MEM_ADDR_REG with the physical address (bits 35:4)
|
|
* of the buffer, which must be 4K aligned. Once this is set up, the 4965
|
|
* automatically invokes keep-warm accesses when normal accesses might not
|
|
* be sufficient to maintain fast DRAM response.
|
|
*
|
|
* Bit fields:
|
|
* 31-0: Keep-warm buffer physical base address [35:4], must be 4K aligned
|
|
*/
|
|
#define IWL_FH_KW_MEM_ADDR_REG (FH_MEM_LOWER_BOUND + 0x97C)
|
|
|
|
|
|
/**
|
|
* TFD Circular Buffers Base (CBBC) addresses
|
|
*
|
|
* 4965 has 16 base pointer registers, one for each of 16 host-DRAM-resident
|
|
* circular buffers (CBs/queues) containing Transmit Frame Descriptors (TFDs)
|
|
* (see struct iwl_tfd_frame). These 16 pointer registers are offset by 0x04
|
|
* bytes from one another. Each TFD circular buffer in DRAM must be 256-byte
|
|
* aligned (address bits 0-7 must be 0).
|
|
*
|
|
* Bit fields in each pointer register:
|
|
* 27-0: TFD CB physical base address [35:8], must be 256-byte aligned
|
|
*/
|
|
#define FH_MEM_CBBC_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0x9D0)
|
|
#define FH_MEM_CBBC_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xA10)
|
|
|
|
/* Find TFD CB base pointer for given queue (range 0-15). */
|
|
#define FH_MEM_CBBC_QUEUE(x) (FH_MEM_CBBC_LOWER_BOUND + (x) * 0x4)
|
|
|
|
|
|
/**
|
|
* Rx SRAM Control and Status Registers (RSCSR)
|
|
*
|
|
* These registers provide handshake between driver and 4965 for the Rx queue
|
|
* (this queue handles *all* command responses, notifications, Rx data, etc.
|
|
* sent from 4965 uCode to host driver). Unlike Tx, there is only one Rx
|
|
* queue, and only one Rx DMA/FIFO channel. Also unlike Tx, which can
|
|
* concatenate up to 20 DRAM buffers to form a Tx frame, each Receive Buffer
|
|
* Descriptor (RBD) points to only one Rx Buffer (RB); there is a 1:1
|
|
* mapping between RBDs and RBs.
|
|
*
|
|
* Driver must allocate host DRAM memory for the following, and set the
|
|
* physical address of each into 4965 registers:
|
|
*
|
|
* 1) Receive Buffer Descriptor (RBD) circular buffer (CB), typically with 256
|
|
* entries (although any power of 2, up to 4096, is selectable by driver).
|
|
* Each entry (1 dword) points to a receive buffer (RB) of consistent size
|
|
* (typically 4K, although 8K or 16K are also selectable by driver).
|
|
* Driver sets up RB size and number of RBDs in the CB via Rx config
|
|
* register FH_MEM_RCSR_CHNL0_CONFIG_REG.
|
|
*
|
|
* Bit fields within one RBD:
|
|
* 27-0: Receive Buffer physical address bits [35:8], 256-byte aligned
|
|
*
|
|
* Driver sets physical address [35:8] of base of RBD circular buffer
|
|
* into FH_RSCSR_CHNL0_RBDCB_BASE_REG [27:0].
|
|
*
|
|
* 2) Rx status buffer, 8 bytes, in which 4965 indicates which Rx Buffers
|
|
* (RBs) have been filled, via a "write pointer", actually the index of
|
|
* the RB's corresponding RBD within the circular buffer. Driver sets
|
|
* physical address [35:4] into FH_RSCSR_CHNL0_STTS_WPTR_REG [31:0].
|
|
*
|
|
* Bit fields in lower dword of Rx status buffer (upper dword not used
|
|
* by driver; see struct iwl4965_shared, val0):
|
|
* 31-12: Not used by driver
|
|
* 11- 0: Index of last filled Rx buffer descriptor
|
|
* (4965 writes, driver reads this value)
|
|
*
|
|
* As the driver prepares Receive Buffers (RBs) for 4965 to fill, driver must
|
|
* enter pointers to these RBs into contiguous RBD circular buffer entries,
|
|
* and update the 4965's "write" index register, FH_RSCSR_CHNL0_RBDCB_WPTR_REG.
|
|
*
|
|
* This "write" index corresponds to the *next* RBD that the driver will make
|
|
* available, i.e. one RBD past the tail of the ready-to-fill RBDs within
|
|
* the circular buffer. This value should initially be 0 (before preparing any
|
|
* RBs), should be 8 after preparing the first 8 RBs (for example), and must
|
|
* wrap back to 0 at the end of the circular buffer (but don't wrap before
|
|
* "read" index has advanced past 1! See below).
|
|
* NOTE: 4965 EXPECTS THE WRITE INDEX TO BE INCREMENTED IN MULTIPLES OF 8.
|
|
*
|
|
* As the 4965 fills RBs (referenced from contiguous RBDs within the circular
|
|
* buffer), it updates the Rx status buffer in host DRAM, 2) described above,
|
|
* to tell the driver the index of the latest filled RBD. The driver must
|
|
* read this "read" index from DRAM after receiving an Rx interrupt from 4965.
|
|
*
|
|
* The driver must also internally keep track of a third index, which is the
|
|
* next RBD to process. When receiving an Rx interrupt, driver should process
|
|
* all filled but unprocessed RBs up to, but not including, the RB
|
|
* corresponding to the "read" index. For example, if "read" index becomes "1",
|
|
* driver may process the RB pointed to by RBD 0. Depending on volume of
|
|
* traffic, there may be many RBs to process.
|
|
*
|
|
* If read index == write index, 4965 thinks there is no room to put new data.
|
|
* Due to this, the maximum number of filled RBs is 255, instead of 256. To
|
|
* be safe, make sure that there is a gap of at least 2 RBDs between "write"
|
|
* and "read" indexes; that is, make sure that there are no more than 254
|
|
* buffers waiting to be filled.
|
|
*/
|
|
#define FH_MEM_RSCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xBC0)
|
|
#define FH_MEM_RSCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xC00)
|
|
#define FH_MEM_RSCSR_CHNL0 (FH_MEM_RSCSR_LOWER_BOUND)
|
|
|
|
/**
|
|
* Physical base address of 8-byte Rx Status buffer.
|
|
* Bit fields:
|
|
* 31-0: Rx status buffer physical base address [35:4], must 16-byte aligned.
|
|
*/
|
|
#define FH_RSCSR_CHNL0_STTS_WPTR_REG (FH_MEM_RSCSR_CHNL0)
|
|
|
|
/**
|
|
* Physical base address of Rx Buffer Descriptor Circular Buffer.
|
|
* Bit fields:
|
|
* 27-0: RBD CD physical base address [35:8], must be 256-byte aligned.
|
|
*/
|
|
#define FH_RSCSR_CHNL0_RBDCB_BASE_REG (FH_MEM_RSCSR_CHNL0 + 0x004)
|
|
|
|
/**
|
|
* Rx write pointer (index, really!).
|
|
* Bit fields:
|
|
* 11-0: Index of driver's most recent prepared-to-be-filled RBD, + 1.
|
|
* NOTE: For 256-entry circular buffer, use only bits [7:0].
|
|
*/
|
|
#define FH_RSCSR_CHNL0_RBDCB_WPTR_REG (FH_MEM_RSCSR_CHNL0 + 0x008)
|
|
#define FH_RSCSR_CHNL0_WPTR (FH_RSCSR_CHNL0_RBDCB_WPTR_REG)
|
|
|
|
|
|
/**
|
|
* Rx Config/Status Registers (RCSR)
|
|
* Rx Config Reg for channel 0 (only channel used)
|
|
*
|
|
* Driver must initialize FH_MEM_RCSR_CHNL0_CONFIG_REG as follows for
|
|
* normal operation (see bit fields).
|
|
*
|
|
* Clearing FH_MEM_RCSR_CHNL0_CONFIG_REG to 0 turns off Rx DMA.
|
|
* Driver should poll FH_MEM_RSSR_RX_STATUS_REG for
|
|
* FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (bit 24) before continuing.
|
|
*
|
|
* Bit fields:
|
|
* 31-30: Rx DMA channel enable: '00' off/pause, '01' pause at end of frame,
|
|
* '10' operate normally
|
|
* 29-24: reserved
|
|
* 23-20: # RBDs in circular buffer = 2^value; use "8" for 256 RBDs (normal),
|
|
* min "5" for 32 RBDs, max "12" for 4096 RBDs.
|
|
* 19-18: reserved
|
|
* 17-16: size of each receive buffer; '00' 4K (normal), '01' 8K,
|
|
* '10' 12K, '11' 16K.
|
|
* 15-14: reserved
|
|
* 13-12: IRQ destination; '00' none, '01' host driver (normal operation)
|
|
* 11- 4: timeout for closing Rx buffer and interrupting host (units 32 usec)
|
|
* typical value 0x10 (about 1/2 msec)
|
|
* 3- 0: reserved
|
|
*/
|
|
#define FH_MEM_RCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xC00)
|
|
#define FH_MEM_RCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xCC0)
|
|
#define FH_MEM_RCSR_CHNL0 (FH_MEM_RCSR_LOWER_BOUND)
|
|
|
|
#define FH_MEM_RCSR_CHNL0_CONFIG_REG (FH_MEM_RCSR_CHNL0)
|
|
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_RB_TIMEOUT_MASK (0x00000FF0) /* bit 4-11 */
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_MASK (0x00001000) /* bit 12 */
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MASK (0x00008000) /* bit 15 */
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_RB_SIZE_MASK (0x00030000) /* bits 16-17 */
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_RBDBC_SIZE_MASK (0x00F00000) /* bits 20-23 */
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_DMA_CHNL_EN_MASK (0xC0000000) /* bits 30-31 */
|
|
|
|
#define FH_RCSR_RX_CONFIG_RBDCB_SIZE_BITSHIFT (20)
|
|
#define FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_BITSHIFT (4)
|
|
#define RX_RB_TIMEOUT (0x10)
|
|
|
|
#define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_VAL (0x00000000)
|
|
#define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_EOF_VAL (0x40000000)
|
|
#define FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL (0x80000000)
|
|
|
|
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K (0x00000000)
|
|
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K (0x00010000)
|
|
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_12K (0x00020000)
|
|
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_16K (0x00030000)
|
|
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL (0x00000000)
|
|
#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL (0x00001000)
|
|
|
|
|
|
/**
|
|
* Rx Shared Status Registers (RSSR)
|
|
*
|
|
* After stopping Rx DMA channel (writing 0 to FH_MEM_RCSR_CHNL0_CONFIG_REG),
|
|
* driver must poll FH_MEM_RSSR_RX_STATUS_REG until Rx channel is idle.
|
|
*
|
|
* Bit fields:
|
|
* 24: 1 = Channel 0 is idle
|
|
*
|
|
* FH_MEM_RSSR_SHARED_CTRL_REG and FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV contain
|
|
* default values that should not be altered by the driver.
|
|
*/
|
|
#define FH_MEM_RSSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xC40)
|
|
#define FH_MEM_RSSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xD00)
|
|
|
|
#define FH_MEM_RSSR_SHARED_CTRL_REG (FH_MEM_RSSR_LOWER_BOUND)
|
|
#define FH_MEM_RSSR_RX_STATUS_REG (FH_MEM_RSSR_LOWER_BOUND + 0x004)
|
|
#define FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV (FH_MEM_RSSR_LOWER_BOUND + 0x008)
|
|
|
|
#define FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0x01000000)
|
|
|
|
|
|
/**
|
|
* Transmit DMA Channel Control/Status Registers (TCSR)
|
|
*
|
|
* 4965 has one configuration register for each of 8 Tx DMA/FIFO channels
|
|
* supported in hardware (don't confuse these with the 16 Tx queues in DRAM,
|
|
* which feed the DMA/FIFO channels); config regs are separated by 0x20 bytes.
|
|
*
|
|
* To use a Tx DMA channel, driver must initialize its
|
|
* IWL_FH_TCSR_CHNL_TX_CONFIG_REG(chnl) with:
|
|
*
|
|
* IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
|
|
* IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
|
|
*
|
|
* All other bits should be 0.
|
|
*
|
|
* Bit fields:
|
|
* 31-30: Tx DMA channel enable: '00' off/pause, '01' pause at end of frame,
|
|
* '10' operate normally
|
|
* 29- 4: Reserved, set to "0"
|
|
* 3: Enable internal DMA requests (1, normal operation), disable (0)
|
|
* 2- 0: Reserved, set to "0"
|
|
*/
|
|
#define IWL_FH_TCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xD00)
|
|
#define IWL_FH_TCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xE60)
|
|
|
|
/* Find Control/Status reg for given Tx DMA/FIFO channel */
|
|
#define IWL_FH_TCSR_CHNL_TX_CONFIG_REG(_chnl) \
|
|
(IWL_FH_TCSR_LOWER_BOUND + 0x20 * _chnl)
|
|
|
|
#define IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE_VAL (0x00000000)
|
|
#define IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL (0x00000008)
|
|
|
|
#define IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0x00000000)
|
|
#define IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE_EOF (0x40000000)
|
|
#define IWL_FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0x80000000)
|
|
|
|
/**
|
|
* Tx Shared Status Registers (TSSR)
|
|
*
|
|
* After stopping Tx DMA channel (writing 0 to
|
|
* IWL_FH_TCSR_CHNL_TX_CONFIG_REG(chnl)), driver must poll
|
|
* IWL_FH_TSSR_TX_STATUS_REG until selected Tx channel is idle
|
|
* (channel's buffers empty | no pending requests).
|
|
*
|
|
* Bit fields:
|
|
* 31-24: 1 = Channel buffers empty (channel 7:0)
|
|
* 23-16: 1 = No pending requests (channel 7:0)
|
|
*/
|
|
#define IWL_FH_TSSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0xEA0)
|
|
#define IWL_FH_TSSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0xEC0)
|
|
|
|
#define IWL_FH_TSSR_TX_STATUS_REG (IWL_FH_TSSR_LOWER_BOUND + 0x010)
|
|
|
|
#define IWL_FH_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_chnl) \
|
|
((1 << (_chnl)) << 24)
|
|
#define IWL_FH_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_chnl) \
|
|
((1 << (_chnl)) << 16)
|
|
|
|
#define IWL_FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_chnl) \
|
|
(IWL_FH_TSSR_TX_STATUS_REG_BIT_BUFS_EMPTY(_chnl) | \
|
|
IWL_FH_TSSR_TX_STATUS_REG_BIT_NO_PEND_REQ(_chnl))
|
|
|
|
|
|
/********************* START TX SCHEDULER *************************************/
|
|
|
|
/**
|
|
* 4965 Tx Scheduler
|
|
*
|
|
* The Tx Scheduler selects the next frame to be transmitted, chosing TFDs
|
|
* (Transmit Frame Descriptors) from up to 16 circular Tx queues resident in
|
|
* host DRAM. It steers each frame's Tx command (which contains the frame
|
|
* data) into one of up to 7 prioritized Tx DMA FIFO channels within the
|
|
* device. A queue maps to only one (selectable by driver) Tx DMA channel,
|
|
* but one DMA channel may take input from several queues.
|
|
*
|
|
* Tx DMA channels have dedicated purposes. For 4965, they are used as follows:
|
|
*
|
|
* 0 -- EDCA BK (background) frames, lowest priority
|
|
* 1 -- EDCA BE (best effort) frames, normal priority
|
|
* 2 -- EDCA VI (video) frames, higher priority
|
|
* 3 -- EDCA VO (voice) and management frames, highest priority
|
|
* 4 -- Commands (e.g. RXON, etc.)
|
|
* 5 -- HCCA short frames
|
|
* 6 -- HCCA long frames
|
|
* 7 -- not used by driver (device-internal only)
|
|
*
|
|
* Driver should normally map queues 0-6 to Tx DMA/FIFO channels 0-6.
|
|
* In addition, driver can map queues 7-15 to Tx DMA/FIFO channels 0-3 to
|
|
* support 11n aggregation via EDCA DMA channels.
|
|
*
|
|
* The driver sets up each queue to work in one of two modes:
|
|
*
|
|
* 1) Scheduler-Ack, in which the scheduler automatically supports a
|
|
* block-ack (BA) window of up to 64 TFDs. In this mode, each queue
|
|
* contains TFDs for a unique combination of Recipient Address (RA)
|
|
* and Traffic Identifier (TID), that is, traffic of a given
|
|
* Quality-Of-Service (QOS) priority, destined for a single station.
|
|
*
|
|
* In scheduler-ack mode, the scheduler keeps track of the Tx status of
|
|
* each frame within the BA window, including whether it's been transmitted,
|
|
* and whether it's been acknowledged by the receiving station. The device
|
|
* automatically processes block-acks received from the receiving STA,
|
|
* and reschedules un-acked frames to be retransmitted (successful
|
|
* Tx completion may end up being out-of-order).
|
|
*
|
|
* The driver must maintain the queue's Byte Count table in host DRAM
|
|
* (struct iwl4965_sched_queue_byte_cnt_tbl) for this mode.
|
|
* This mode does not support fragmentation.
|
|
*
|
|
* 2) FIFO (a.k.a. non-Scheduler-ACK), in which each TFD is processed in order.
|
|
* The device may automatically retry Tx, but will retry only one frame
|
|
* at a time, until receiving ACK from receiving station, or reaching
|
|
* retry limit and giving up.
|
|
*
|
|
* The command queue (#4) must use this mode!
|
|
* This mode does not require use of the Byte Count table in host DRAM.
|
|
*
|
|
* Driver controls scheduler operation via 3 means:
|
|
* 1) Scheduler registers
|
|
* 2) Shared scheduler data base in internal 4956 SRAM
|
|
* 3) Shared data in host DRAM
|
|
*
|
|
* Initialization:
|
|
*
|
|
* When loading, driver should allocate memory for:
|
|
* 1) 16 TFD circular buffers, each with space for (typically) 256 TFDs.
|
|
* 2) 16 Byte Count circular buffers in 16 KBytes contiguous memory
|
|
* (1024 bytes for each queue).
|
|
*
|
|
* After receiving "Alive" response from uCode, driver must initialize
|
|
* the scheduler (especially for queue #4, the command queue, otherwise
|
|
* the driver can't issue commands!):
|
|
*/
|
|
|
|
/**
|
|
* Max Tx window size is the max number of contiguous TFDs that the scheduler
|
|
* can keep track of at one time when creating block-ack chains of frames.
|
|
* Note that "64" matches the number of ack bits in a block-ack packet.
|
|
* Driver should use SCD_WIN_SIZE and SCD_FRAME_LIMIT values to initialize
|
|
* SCD_CONTEXT_QUEUE_OFFSET(x) values.
|
|
*/
|
|
#define SCD_WIN_SIZE 64
|
|
#define SCD_FRAME_LIMIT 64
|
|
|
|
/* SCD registers are internal, must be accessed via HBUS_TARG_PRPH regs */
|
|
#define SCD_START_OFFSET 0xa02c00
|
|
|
|
/*
|
|
* 4965 tells driver SRAM address for internal scheduler structs via this reg.
|
|
* Value is valid only after "Alive" response from uCode.
|
|
*/
|
|
#define SCD_SRAM_BASE_ADDR (SCD_START_OFFSET + 0x0)
|
|
|
|
/*
|
|
* Driver may need to update queue-empty bits after changing queue's
|
|
* write and read pointers (indexes) during (re-)initialization (i.e. when
|
|
* scheduler is not tracking what's happening).
|
|
* Bit fields:
|
|
* 31-16: Write mask -- 1: update empty bit, 0: don't change empty bit
|
|
* 15-00: Empty state, one for each queue -- 1: empty, 0: non-empty
|
|
* NOTE: This register is not used by Linux driver.
|
|
*/
|
|
#define SCD_EMPTY_BITS (SCD_START_OFFSET + 0x4)
|
|
|
|
/*
|
|
* Physical base address of array of byte count (BC) circular buffers (CBs).
|
|
* Each Tx queue has a BC CB in host DRAM to support Scheduler-ACK mode.
|
|
* This register points to BC CB for queue 0, must be on 1024-byte boundary.
|
|
* Others are spaced by 1024 bytes.
|
|
* Each BC CB is 2 bytes * (256 + 64) = 740 bytes, followed by 384 bytes pad.
|
|
* (Index into a queue's BC CB) = (index into queue's TFD CB) = (SSN & 0xff).
|
|
* Bit fields:
|
|
* 25-00: Byte Count CB physical address [35:10], must be 1024-byte aligned.
|
|
*/
|
|
#define SCD_DRAM_BASE_ADDR (SCD_START_OFFSET + 0x10)
|
|
|
|
/*
|
|
* Enables any/all Tx DMA/FIFO channels.
|
|
* Scheduler generates requests for only the active channels.
|
|
* Set this to 0xff to enable all 8 channels (normal usage).
|
|
* Bit fields:
|
|
* 7- 0: Enable (1), disable (0), one bit for each channel 0-7
|
|
*/
|
|
#define SCD_TXFACT (SCD_START_OFFSET + 0x1c)
|
|
|
|
/* Mask to enable contiguous Tx DMA/FIFO channels between "lo" and "hi". */
|
|
#define SCD_TXFACT_REG_TXFIFO_MASK(lo, hi) \
|
|
((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
|
|
|
|
/*
|
|
* Queue (x) Write Pointers (indexes, really!), one for each Tx queue.
|
|
* Initialized and updated by driver as new TFDs are added to queue.
|
|
* NOTE: If using Block Ack, index must correspond to frame's
|
|
* Start Sequence Number; index = (SSN & 0xff)
|
|
* NOTE: Alternative to HBUS_TARG_WRPTR, which is what Linux driver uses?
|
|
*/
|
|
#define SCD_QUEUE_WRPTR(x) (SCD_START_OFFSET + 0x24 + (x) * 4)
|
|
|
|
/*
|
|
* Queue (x) Read Pointers (indexes, really!), one for each Tx queue.
|
|
* For FIFO mode, index indicates next frame to transmit.
|
|
* For Scheduler-ACK mode, index indicates first frame in Tx window.
|
|
* Initialized by driver, updated by scheduler.
|
|
*/
|
|
#define SCD_QUEUE_RDPTR(x) (SCD_START_OFFSET + 0x64 + (x) * 4)
|
|
|
|
/*
|
|
* Select which queues work in chain mode (1) vs. not (0).
|
|
* Use chain mode to build chains of aggregated frames.
|
|
* Bit fields:
|
|
* 31-16: Reserved
|
|
* 15-00: Mode, one bit for each queue -- 1: Chain mode, 0: one-at-a-time
|
|
* NOTE: If driver sets up queue for chain mode, it should be also set up
|
|
* Scheduler-ACK mode as well, via SCD_QUEUE_STATUS_BITS(x).
|
|
*/
|
|
#define SCD_QUEUECHAIN_SEL (SCD_START_OFFSET + 0xd0)
|
|
|
|
/*
|
|
* Select which queues interrupt driver when scheduler increments
|
|
* a queue's read pointer (index).
|
|
* Bit fields:
|
|
* 31-16: Reserved
|
|
* 15-00: Interrupt enable, one bit for each queue -- 1: enabled, 0: disabled
|
|
* NOTE: This functionality is apparently a no-op; driver relies on interrupts
|
|
* from Rx queue to read Tx command responses and update Tx queues.
|
|
*/
|
|
#define SCD_INTERRUPT_MASK (SCD_START_OFFSET + 0xe4)
|
|
|
|
/*
|
|
* Queue search status registers. One for each queue.
|
|
* Sets up queue mode and assigns queue to Tx DMA channel.
|
|
* Bit fields:
|
|
* 19-10: Write mask/enable bits for bits 0-9
|
|
* 9: Driver should init to "0"
|
|
* 8: Scheduler-ACK mode (1), non-Scheduler-ACK (i.e. FIFO) mode (0).
|
|
* Driver should init to "1" for aggregation mode, or "0" otherwise.
|
|
* 7-6: Driver should init to "0"
|
|
* 5: Window Size Left; indicates whether scheduler can request
|
|
* another TFD, based on window size, etc. Driver should init
|
|
* this bit to "1" for aggregation mode, or "0" for non-agg.
|
|
* 4-1: Tx FIFO to use (range 0-7).
|
|
* 0: Queue is active (1), not active (0).
|
|
* Other bits should be written as "0"
|
|
*
|
|
* NOTE: If enabling Scheduler-ACK mode, chain mode should also be enabled
|
|
* via SCD_QUEUECHAIN_SEL.
|
|
*/
|
|
#define SCD_QUEUE_STATUS_BITS(x) (SCD_START_OFFSET + 0x104 + (x) * 4)
|
|
|
|
/* Bit field positions */
|
|
#define SCD_QUEUE_STTS_REG_POS_ACTIVE (0)
|
|
#define SCD_QUEUE_STTS_REG_POS_TXF (1)
|
|
#define SCD_QUEUE_STTS_REG_POS_WSL (5)
|
|
#define SCD_QUEUE_STTS_REG_POS_SCD_ACK (8)
|
|
|
|
/* Write masks */
|
|
#define SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN (10)
|
|
#define SCD_QUEUE_STTS_REG_MSK (0x0007FC00)
|
|
|
|
/**
|
|
* 4965 internal SRAM structures for scheduler, shared with driver ...
|
|
*
|
|
* Driver should clear and initialize the following areas after receiving
|
|
* "Alive" response from 4965 uCode, i.e. after initial
|
|
* uCode load, or after a uCode load done for error recovery:
|
|
*
|
|
* SCD_CONTEXT_DATA_OFFSET (size 128 bytes)
|
|
* SCD_TX_STTS_BITMAP_OFFSET (size 256 bytes)
|
|
* SCD_TRANSLATE_TBL_OFFSET (size 32 bytes)
|
|
*
|
|
* Driver accesses SRAM via HBUS_TARG_MEM_* registers.
|
|
* Driver reads base address of this scheduler area from SCD_SRAM_BASE_ADDR.
|
|
* All OFFSET values must be added to this base address.
|
|
*/
|
|
|
|
/*
|
|
* Queue context. One 8-byte entry for each of 16 queues.
|
|
*
|
|
* Driver should clear this entire area (size 0x80) to 0 after receiving
|
|
* "Alive" notification from uCode. Additionally, driver should init
|
|
* each queue's entry as follows:
|
|
*
|
|
* LS Dword bit fields:
|
|
* 0-06: Max Tx window size for Scheduler-ACK. Driver should init to 64.
|
|
*
|
|
* MS Dword bit fields:
|
|
* 16-22: Frame limit. Driver should init to 10 (0xa).
|
|
*
|
|
* Driver should init all other bits to 0.
|
|
*
|
|
* Init must be done after driver receives "Alive" response from 4965 uCode,
|
|
* and when setting up queue for aggregation.
|
|
*/
|
|
#define SCD_CONTEXT_DATA_OFFSET 0x380
|
|
#define SCD_CONTEXT_QUEUE_OFFSET(x) (SCD_CONTEXT_DATA_OFFSET + ((x) * 8))
|
|
|
|
#define SCD_QUEUE_CTX_REG1_WIN_SIZE_POS (0)
|
|
#define SCD_QUEUE_CTX_REG1_WIN_SIZE_MSK (0x0000007F)
|
|
#define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS (16)
|
|
#define SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK (0x007F0000)
|
|
|
|
/*
|
|
* Tx Status Bitmap
|
|
*
|
|
* Driver should clear this entire area (size 0x100) to 0 after receiving
|
|
* "Alive" notification from uCode. Area is used only by device itself;
|
|
* no other support (besides clearing) is required from driver.
|
|
*/
|
|
#define SCD_TX_STTS_BITMAP_OFFSET 0x400
|
|
|
|
/*
|
|
* RAxTID to queue translation mapping.
|
|
*
|
|
* When queue is in Scheduler-ACK mode, frames placed in a that queue must be
|
|
* for only one combination of receiver address (RA) and traffic ID (TID), i.e.
|
|
* one QOS priority level destined for one station (for this wireless link,
|
|
* not final destination). The SCD_TRANSLATE_TABLE area provides 16 16-bit
|
|
* mappings, one for each of the 16 queues. If queue is not in Scheduler-ACK
|
|
* mode, the device ignores the mapping value.
|
|
*
|
|
* Bit fields, for each 16-bit map:
|
|
* 15-9: Reserved, set to 0
|
|
* 8-4: Index into device's station table for recipient station
|
|
* 3-0: Traffic ID (tid), range 0-15
|
|
*
|
|
* Driver should clear this entire area (size 32 bytes) to 0 after receiving
|
|
* "Alive" notification from uCode. To update a 16-bit map value, driver
|
|
* must read a dword-aligned value from device SRAM, replace the 16-bit map
|
|
* value of interest, and write the dword value back into device SRAM.
|
|
*/
|
|
#define SCD_TRANSLATE_TBL_OFFSET 0x500
|
|
|
|
/* Find translation table dword to read/write for given queue */
|
|
#define SCD_TRANSLATE_TBL_OFFSET_QUEUE(x) \
|
|
((SCD_TRANSLATE_TBL_OFFSET + ((x) * 2)) & 0xfffffffc)
|
|
|
|
#define SCD_TXFIFO_POS_TID (0)
|
|
#define SCD_TXFIFO_POS_RA (4)
|
|
#define SCD_QUEUE_RA_TID_MAP_RATID_MSK (0x01FF)
|
|
|
|
/*********************** END TX SCHEDULER *************************************/
|
|
|
|
static inline u8 iwl4965_hw_get_rate(__le32 rate_n_flags)
|
|
{
|
|
return le32_to_cpu(rate_n_flags) & 0xFF;
|
|
}
|
|
static inline u16 iwl4965_hw_get_rate_n_flags(__le32 rate_n_flags)
|
|
{
|
|
return le32_to_cpu(rate_n_flags) & 0xFFFF;
|
|
}
|
|
static inline __le32 iwl4965_hw_set_rate_n_flags(u8 rate, u16 flags)
|
|
{
|
|
return cpu_to_le32(flags|(u16)rate);
|
|
}
|
|
|
|
|
|
/**
|
|
* Tx/Rx Queues
|
|
*
|
|
* Most communication between driver and 4965 is via queues of data buffers.
|
|
* For example, all commands that the driver issues to device's embedded
|
|
* controller (uCode) are via the command queue (one of the Tx queues). All
|
|
* uCode command responses/replies/notifications, including Rx frames, are
|
|
* conveyed from uCode to driver via the Rx queue.
|
|
*
|
|
* Most support for these queues, including handshake support, resides in
|
|
* structures in host DRAM, shared between the driver and the device. When
|
|
* allocating this memory, the driver must make sure that data written by
|
|
* the host CPU updates DRAM immediately (and does not get "stuck" in CPU's
|
|
* cache memory), so DRAM and cache are consistent, and the device can
|
|
* immediately see changes made by the driver.
|
|
*
|
|
* 4965 supports up to 16 DRAM-based Tx queues, and services these queues via
|
|
* up to 7 DMA channels (FIFOs). Each Tx queue is supported by a circular array
|
|
* in DRAM containing 256 Transmit Frame Descriptors (TFDs).
|
|
*/
|
|
#define IWL4965_MAX_WIN_SIZE 64
|
|
#define IWL4965_QUEUE_SIZE 256
|
|
#define IWL4965_NUM_FIFOS 7
|
|
#define IWL_MAX_NUM_QUEUES 16
|
|
|
|
|
|
/**
|
|
* struct iwl4965_tfd_frame_data
|
|
*
|
|
* Describes up to 2 buffers containing (contiguous) portions of a Tx frame.
|
|
* Each buffer must be on dword boundary.
|
|
* Up to 10 iwl_tfd_frame_data structures, describing up to 20 buffers,
|
|
* may be filled within a TFD (iwl_tfd_frame).
|
|
*
|
|
* Bit fields in tb1_addr:
|
|
* 31- 0: Tx buffer 1 address bits [31:0]
|
|
*
|
|
* Bit fields in val1:
|
|
* 31-16: Tx buffer 2 address bits [15:0]
|
|
* 15- 4: Tx buffer 1 length (bytes)
|
|
* 3- 0: Tx buffer 1 address bits [32:32]
|
|
*
|
|
* Bit fields in val2:
|
|
* 31-20: Tx buffer 2 length (bytes)
|
|
* 19- 0: Tx buffer 2 address bits [35:16]
|
|
*/
|
|
struct iwl4965_tfd_frame_data {
|
|
__le32 tb1_addr;
|
|
|
|
__le32 val1;
|
|
/* __le32 ptb1_32_35:4; */
|
|
#define IWL_tb1_addr_hi_POS 0
|
|
#define IWL_tb1_addr_hi_LEN 4
|
|
#define IWL_tb1_addr_hi_SYM val1
|
|
/* __le32 tb_len1:12; */
|
|
#define IWL_tb1_len_POS 4
|
|
#define IWL_tb1_len_LEN 12
|
|
#define IWL_tb1_len_SYM val1
|
|
/* __le32 ptb2_0_15:16; */
|
|
#define IWL_tb2_addr_lo16_POS 16
|
|
#define IWL_tb2_addr_lo16_LEN 16
|
|
#define IWL_tb2_addr_lo16_SYM val1
|
|
|
|
__le32 val2;
|
|
/* __le32 ptb2_16_35:20; */
|
|
#define IWL_tb2_addr_hi20_POS 0
|
|
#define IWL_tb2_addr_hi20_LEN 20
|
|
#define IWL_tb2_addr_hi20_SYM val2
|
|
/* __le32 tb_len2:12; */
|
|
#define IWL_tb2_len_POS 20
|
|
#define IWL_tb2_len_LEN 12
|
|
#define IWL_tb2_len_SYM val2
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
/**
|
|
* struct iwl4965_tfd_frame
|
|
*
|
|
* Transmit Frame Descriptor (TFD)
|
|
*
|
|
* 4965 supports up to 16 Tx queues resident in host DRAM.
|
|
* Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM.
|
|
* Both driver and device share these circular buffers, each of which must be
|
|
* contiguous 256 TFDs x 128 bytes-per-TFD = 32 KBytes for 4965.
|
|
*
|
|
* Driver must indicate the physical address of the base of each
|
|
* circular buffer via the 4965's FH_MEM_CBBC_QUEUE registers.
|
|
*
|
|
* Each TFD contains pointer/size information for up to 20 data buffers
|
|
* in host DRAM. These buffers collectively contain the (one) frame described
|
|
* by the TFD. Each buffer must be a single contiguous block of memory within
|
|
* itself, but buffers may be scattered in host DRAM. Each buffer has max size
|
|
* of (4K - 4). The 4965 concatenates all of a TFD's buffers into a single
|
|
* Tx frame, up to 8 KBytes in size.
|
|
*
|
|
* Bit fields in the control dword (val0):
|
|
* 31-30: # dwords (0-3) of padding required at end of frame for 16-byte bound
|
|
* 29: reserved
|
|
* 28-24: # Transmit Buffer Descriptors in TFD
|
|
* 23- 0: reserved
|
|
*
|
|
* A maximum of 255 (not 256!) TFDs may be on a queue waiting for Tx.
|
|
*/
|
|
struct iwl4965_tfd_frame {
|
|
__le32 val0;
|
|
/* __le32 rsvd1:24; */
|
|
/* __le32 num_tbs:5; */
|
|
#define IWL_num_tbs_POS 24
|
|
#define IWL_num_tbs_LEN 5
|
|
#define IWL_num_tbs_SYM val0
|
|
/* __le32 rsvd2:1; */
|
|
/* __le32 padding:2; */
|
|
struct iwl4965_tfd_frame_data pa[10];
|
|
__le32 reserved;
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
/**
|
|
* struct iwl4965_queue_byte_cnt_entry
|
|
*
|
|
* Byte Count Table Entry
|
|
*
|
|
* Bit fields:
|
|
* 15-12: reserved
|
|
* 11- 0: total to-be-transmitted byte count of frame (does not include command)
|
|
*/
|
|
struct iwl4965_queue_byte_cnt_entry {
|
|
__le16 val;
|
|
/* __le16 byte_cnt:12; */
|
|
#define IWL_byte_cnt_POS 0
|
|
#define IWL_byte_cnt_LEN 12
|
|
#define IWL_byte_cnt_SYM val
|
|
/* __le16 rsvd:4; */
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
/**
|
|
* struct iwl4965_sched_queue_byte_cnt_tbl
|
|
*
|
|
* Byte Count table
|
|
*
|
|
* Each Tx queue uses a byte-count table containing 320 entries:
|
|
* one 16-bit entry for each of 256 TFDs, plus an additional 64 entries that
|
|
* duplicate the first 64 entries (to avoid wrap-around within a Tx window;
|
|
* max Tx window is 64 TFDs).
|
|
*
|
|
* When driver sets up a new TFD, it must also enter the total byte count
|
|
* of the frame to be transmitted into the corresponding entry in the byte
|
|
* count table for the chosen Tx queue. If the TFD index is 0-63, the driver
|
|
* must duplicate the byte count entry in corresponding index 256-319.
|
|
*
|
|
* "dont_care" padding puts each byte count table on a 1024-byte boundary;
|
|
* 4965 assumes tables are separated by 1024 bytes.
|
|
*/
|
|
struct iwl4965_sched_queue_byte_cnt_tbl {
|
|
struct iwl4965_queue_byte_cnt_entry tfd_offset[IWL4965_QUEUE_SIZE +
|
|
IWL4965_MAX_WIN_SIZE];
|
|
u8 dont_care[1024 -
|
|
(IWL4965_QUEUE_SIZE + IWL4965_MAX_WIN_SIZE) *
|
|
sizeof(__le16)];
|
|
} __attribute__ ((packed));
|
|
|
|
|
|
/**
|
|
* struct iwl4965_shared - handshake area for Tx and Rx
|
|
*
|
|
* For convenience in allocating memory, this structure combines 2 areas of
|
|
* DRAM which must be shared between driver and 4965. These do not need to
|
|
* be combined, if better allocation would result from keeping them separate:
|
|
*
|
|
* 1) The Tx byte count tables occupy 1024 bytes each (16 KBytes total for
|
|
* 16 queues). Driver uses SCD_DRAM_BASE_ADDR to tell 4965 where to find
|
|
* the first of these tables. 4965 assumes tables are 1024 bytes apart.
|
|
*
|
|
* 2) The Rx status (val0 and val1) occupies only 8 bytes. Driver uses
|
|
* FH_RSCSR_CHNL0_STTS_WPTR_REG to tell 4965 where to find this area.
|
|
* Driver reads val0 to determine the latest Receive Buffer Descriptor (RBD)
|
|
* that has been filled by the 4965.
|
|
*
|
|
* Bit fields val0:
|
|
* 31-12: Not used
|
|
* 11- 0: Index of last filled Rx buffer descriptor (4965 writes, driver reads)
|
|
*
|
|
* Bit fields val1:
|
|
* 31- 0: Not used
|
|
*/
|
|
struct iwl4965_shared {
|
|
struct iwl4965_sched_queue_byte_cnt_tbl
|
|
queues_byte_cnt_tbls[IWL_MAX_NUM_QUEUES];
|
|
__le32 val0;
|
|
|
|
/* __le32 rb_closed_stts_rb_num:12; */
|
|
#define IWL_rb_closed_stts_rb_num_POS 0
|
|
#define IWL_rb_closed_stts_rb_num_LEN 12
|
|
#define IWL_rb_closed_stts_rb_num_SYM val0
|
|
/* __le32 rsrv1:4; */
|
|
/* __le32 rb_closed_stts_rx_frame_num:12; */
|
|
#define IWL_rb_closed_stts_rx_frame_num_POS 16
|
|
#define IWL_rb_closed_stts_rx_frame_num_LEN 12
|
|
#define IWL_rb_closed_stts_rx_frame_num_SYM val0
|
|
/* __le32 rsrv2:4; */
|
|
|
|
__le32 val1;
|
|
/* __le32 frame_finished_stts_rb_num:12; */
|
|
#define IWL_frame_finished_stts_rb_num_POS 0
|
|
#define IWL_frame_finished_stts_rb_num_LEN 12
|
|
#define IWL_frame_finished_stts_rb_num_SYM val1
|
|
/* __le32 rsrv3:4; */
|
|
/* __le32 frame_finished_stts_rx_frame_num:12; */
|
|
#define IWL_frame_finished_stts_rx_frame_num_POS 16
|
|
#define IWL_frame_finished_stts_rx_frame_num_LEN 12
|
|
#define IWL_frame_finished_stts_rx_frame_num_SYM val1
|
|
/* __le32 rsrv4:4; */
|
|
|
|
__le32 padding1; /* so that allocation will be aligned to 16B */
|
|
__le32 padding2;
|
|
} __attribute__ ((packed));
|
|
|
|
#endif /* __iwl4965_4965_hw_h__ */
|