forked from Minki/linux
533 lines
16 KiB
C
533 lines
16 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) 2007 - 2011 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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* Intel Linux Wireless <ilw@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 - 2011 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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#ifndef __iwl_shared_h__
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#define __iwl_shared_h__
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include <linux/gfp.h>
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#include <linux/mm.h> /* for page_address */
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#include <net/mac80211.h>
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#include "iwl-commands.h"
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/**
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* DOC: shared area - role and goal
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*
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* The shared area contains all the data exported by the upper layer to the
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* other layers. Since the bus and transport layer shouldn't dereference
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* iwl_priv, all the data needed by the upper layer and the transport / bus
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* layer must be here.
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* The shared area also holds pointer to all the other layers. This allows a
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* layer to call a function from another layer.
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*
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* NOTE: All the layers hold a pointer to the shared area which must be shrd.
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* A few macros assume that (_m)->shrd points to the shared area no matter
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* what _m is.
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*
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* gets notifications about enumeration, suspend, resume.
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* For the moment, the bus layer is not a linux kernel module as itself, and
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* the module_init function of the driver must call the bus specific
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* registration functions. These functions are listed at the end of this file.
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* For the moment, there is only one implementation of this interface: PCI-e.
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* This implementation is iwl-pci.c
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*/
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struct iwl_cfg;
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struct iwl_bus;
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struct iwl_priv;
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struct iwl_sensitivity_ranges;
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struct iwl_trans_ops;
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#define DRV_NAME "iwlwifi"
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#define IWLWIFI_VERSION "in-tree:"
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#define DRV_COPYRIGHT "Copyright(c) 2003-2011 Intel Corporation"
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#define DRV_AUTHOR "<ilw@linux.intel.com>"
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extern struct iwl_mod_params iwlagn_mod_params;
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/**
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* struct iwl_mod_params
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*
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* Holds the module parameters
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*
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* @sw_crypto: using hardware encryption, default = 0
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* @num_of_queues: number of tx queue, HW dependent
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* @disable_11n: 11n capabilities enabled, default = 0
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* @amsdu_size_8K: enable 8K amsdu size, default = 1
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* @antenna: both antennas (use diversity), default = 0
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* @restart_fw: restart firmware, default = 1
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* @plcp_check: enable plcp health check, default = true
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* @ack_check: disable ack health check, default = false
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* @wd_disable: enable stuck queue check, default = 0
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* @bt_coex_active: enable bt coex, default = true
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* @led_mode: system default, default = 0
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* @no_sleep_autoadjust: disable autoadjust, default = true
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* @power_save: disable power save, default = false
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* @power_level: power level, default = 1
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* @debug_level: levels are IWL_DL_*
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* @ant_coupling: antenna coupling in dB, default = 0
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* @bt_ch_announce: BT channel inhibition, default = enable
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* @wanted_ucode_alternative: ucode alternative to use, default = 1
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* @auto_agg: enable agg. without check, default = true
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*/
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struct iwl_mod_params {
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int sw_crypto;
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int num_of_queues;
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int disable_11n;
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int amsdu_size_8K;
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int antenna;
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int restart_fw;
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bool plcp_check;
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bool ack_check;
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int wd_disable;
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bool bt_coex_active;
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int led_mode;
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bool no_sleep_autoadjust;
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bool power_save;
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int power_level;
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u32 debug_level;
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int ant_coupling;
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bool bt_ch_announce;
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int wanted_ucode_alternative;
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bool auto_agg;
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};
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/**
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* struct iwl_hw_params
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*
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* Holds the module parameters
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*
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* @max_txq_num: Max # Tx queues supported
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* @num_ampdu_queues: num of ampdu queues
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* @tx_chains_num: Number of TX chains
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* @rx_chains_num: Number of RX chains
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* @valid_tx_ant: usable antennas for TX
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* @valid_rx_ant: usable antennas for RX
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* @ht40_channel: is 40MHz width possible: BIT(IEEE80211_BAND_XXX)
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* @sku: sku read from EEPROM
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* @rx_page_order: Rx buffer page order
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* @max_inst_size: for ucode use
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* @max_data_size: for ucode use
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* @ct_kill_threshold: temperature threshold - in hw dependent unit
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* @ct_kill_exit_threshold: when to reeable the device - in hw dependent unit
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* relevant for 1000, 6000 and up
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* @wd_timeout: TX queues watchdog timeout
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* @calib_rt_cfg: setup runtime calibrations for the hw
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* @struct iwl_sensitivity_ranges: range of sensitivity values
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*/
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struct iwl_hw_params {
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u8 max_txq_num;
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u8 num_ampdu_queues;
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u8 tx_chains_num;
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u8 rx_chains_num;
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u8 valid_tx_ant;
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u8 valid_rx_ant;
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u8 ht40_channel;
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bool shadow_reg_enable;
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u16 sku;
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u32 rx_page_order;
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u32 max_inst_size;
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u32 max_data_size;
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u32 ct_kill_threshold;
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u32 ct_kill_exit_threshold;
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unsigned int wd_timeout;
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u32 calib_rt_cfg;
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const struct iwl_sensitivity_ranges *sens;
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};
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/**
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* enum iwl_agg_state
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*
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* The state machine of the BA agreement establishment / tear down.
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* These states relate to a specific RA / TID.
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*
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* @IWL_AGG_OFF: aggregation is not used
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* @IWL_AGG_ON: aggregation session is up
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* @IWL_EMPTYING_HW_QUEUE_ADDBA: establishing a BA session - waiting for the
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* HW queue to be empty from packets for this RA /TID.
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* @IWL_EMPTYING_HW_QUEUE_DELBA: tearing down a BA session - waiting for the
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* HW queue to be empty from packets for this RA /TID.
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*/
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enum iwl_agg_state {
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IWL_AGG_OFF = 0,
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IWL_AGG_ON,
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IWL_EMPTYING_HW_QUEUE_ADDBA,
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IWL_EMPTYING_HW_QUEUE_DELBA,
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};
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/**
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* struct iwl_ht_agg - aggregation state machine
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* This structs holds the states for the BA agreement establishment and tear
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* down. It also holds the state during the BA session itself. This struct is
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* duplicated for each RA / TID.
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* @rate_n_flags: Rate at which Tx was attempted. Holds the data between the
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* Tx response (REPLY_TX), and the block ack notification
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* (REPLY_COMPRESSED_BA).
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* @state: state of the BA agreement establishment / tear down.
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* @txq_id: Tx queue used by the BA session - used by the transport layer.
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* Needed by the upper layer for debugfs only.
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* @wait_for_ba: Expect block-ack before next Tx reply
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*/
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struct iwl_ht_agg {
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u32 rate_n_flags;
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enum iwl_agg_state state;
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u16 txq_id;
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bool wait_for_ba;
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};
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/**
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* struct iwl_tid_data - one for each RA / TID
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* This structs holds the states for each RA / TID.
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* @seq_number: the next WiFi sequence number to use
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* @tfds_in_queue: number of packets sent to the HW queues.
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* Exported for debugfs only
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* @agg: aggregation state machine
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*/
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struct iwl_tid_data {
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u16 seq_number;
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u16 tfds_in_queue;
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struct iwl_ht_agg agg;
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};
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/**
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* struct iwl_shared - shared fields for all the layers of the driver
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*
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* @dbg_level_dev: dbg level set per device. Prevails on
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* iwlagn_mod_params.debug_level if set (!= 0)
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* @ucode_owner: IWL_OWNERSHIP_*
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* @cmd_queue: command queue number
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* @status: STATUS_*
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* @valid_contexts: microcode/device supports multiple contexts
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* @bus: pointer to the bus layer data
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* @priv: pointer to the upper layer data
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* @hw_params: see struct iwl_hw_params
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* @workqueue: the workqueue used by all the layers of the driver
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* @lock: protect general shared data
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* @sta_lock: protects the station table.
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* If lock and sta_lock are needed, lock must be acquired first.
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* @mutex:
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*/
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struct iwl_shared {
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#ifdef CONFIG_IWLWIFI_DEBUG
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u32 dbg_level_dev;
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#endif /* CONFIG_IWLWIFI_DEBUG */
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#define IWL_OWNERSHIP_DRIVER 0
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#define IWL_OWNERSHIP_TM 1
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u8 ucode_owner;
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u8 cmd_queue;
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unsigned long status;
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bool wowlan;
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u8 valid_contexts;
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struct iwl_bus *bus;
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struct iwl_priv *priv;
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struct iwl_trans *trans;
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struct iwl_hw_params hw_params;
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struct workqueue_struct *workqueue;
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spinlock_t lock;
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spinlock_t sta_lock;
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struct mutex mutex;
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struct iwl_tid_data tid_data[IWLAGN_STATION_COUNT][IWL_MAX_TID_COUNT];
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wait_queue_head_t wait_command_queue;
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};
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/*Whatever _m is (iwl_trans, iwl_priv, iwl_bus, these macros will work */
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#define priv(_m) ((_m)->shrd->priv)
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#define bus(_m) ((_m)->shrd->bus)
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#define trans(_m) ((_m)->shrd->trans)
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#define hw_params(_m) ((_m)->shrd->hw_params)
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#ifdef CONFIG_IWLWIFI_DEBUG
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/*
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* iwl_get_debug_level: Return active debug level for device
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*
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* Using sysfs it is possible to set per device debug level. This debug
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* level will be used if set, otherwise the global debug level which can be
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* set via module parameter is used.
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*/
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static inline u32 iwl_get_debug_level(struct iwl_shared *shrd)
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{
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if (shrd->dbg_level_dev)
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return shrd->dbg_level_dev;
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else
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return iwlagn_mod_params.debug_level;
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}
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#else
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static inline u32 iwl_get_debug_level(struct iwl_shared *shrd)
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{
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return iwlagn_mod_params.debug_level;
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}
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#endif
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static inline void iwl_free_pages(struct iwl_shared *shrd, unsigned long page)
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{
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free_pages(page, shrd->hw_params.rx_page_order);
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}
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/**
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* iwl_queue_inc_wrap - increment queue index, wrap back to beginning
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* @index -- current index
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* @n_bd -- total number of entries in queue (must be power of 2)
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*/
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static inline int iwl_queue_inc_wrap(int index, int n_bd)
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{
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return ++index & (n_bd - 1);
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}
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/**
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* iwl_queue_dec_wrap - decrement queue index, wrap back to end
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* @index -- current index
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* @n_bd -- total number of entries in queue (must be power of 2)
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*/
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static inline int iwl_queue_dec_wrap(int index, int n_bd)
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{
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return --index & (n_bd - 1);
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}
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struct iwl_rx_mem_buffer {
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dma_addr_t page_dma;
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struct page *page;
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struct list_head list;
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};
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#define rxb_addr(r) page_address(r->page)
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/*
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* mac80211 queues, ACs, hardware queues, FIFOs.
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*
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* Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues
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*
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* Mac80211 uses the following numbers, which we get as from it
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* by way of skb_get_queue_mapping(skb):
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*
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* VO 0
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* VI 1
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* BE 2
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* BK 3
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*
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*
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* Regular (not A-MPDU) frames are put into hardware queues corresponding
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* to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their
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* own queue per aggregation session (RA/TID combination), such queues are
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* set up to map into FIFOs too, for which we need an AC->FIFO mapping. In
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* order to map frames to the right queue, we also need an AC->hw queue
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* mapping. This is implemented here.
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*
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* Due to the way hw queues are set up (by the hw specific modules like
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* iwl-4965.c, iwl-5000.c etc.), the AC->hw queue mapping is the identity
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* mapping.
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*/
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static const u8 tid_to_ac[] = {
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IEEE80211_AC_BE,
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IEEE80211_AC_BK,
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IEEE80211_AC_BK,
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IEEE80211_AC_BE,
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IEEE80211_AC_VI,
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IEEE80211_AC_VI,
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IEEE80211_AC_VO,
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IEEE80211_AC_VO
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};
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static inline int get_ac_from_tid(u16 tid)
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{
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if (likely(tid < ARRAY_SIZE(tid_to_ac)))
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return tid_to_ac[tid];
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/* no support for TIDs 8-15 yet */
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return -EINVAL;
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}
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enum iwl_rxon_context_id {
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IWL_RXON_CTX_BSS,
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IWL_RXON_CTX_PAN,
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NUM_IWL_RXON_CTX
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};
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int iwl_probe(struct iwl_bus *bus, const struct iwl_trans_ops *trans_ops,
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struct iwl_cfg *cfg);
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void __devexit iwl_remove(struct iwl_priv * priv);
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struct iwl_device_cmd;
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int __must_check iwl_rx_dispatch(struct iwl_priv *priv,
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struct iwl_rx_mem_buffer *rxb,
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struct iwl_device_cmd *cmd);
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int iwlagn_hw_valid_rtc_data_addr(u32 addr);
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void iwl_start_tx_ba_trans_ready(struct iwl_priv *priv,
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enum iwl_rxon_context_id ctx,
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u8 sta_id, u8 tid);
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void iwl_stop_tx_ba_trans_ready(struct iwl_priv *priv,
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enum iwl_rxon_context_id ctx,
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u8 sta_id, u8 tid);
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void iwl_set_hw_rfkill_state(struct iwl_priv *priv, bool state);
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void iwl_nic_config(struct iwl_priv *priv);
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void iwl_free_skb(struct iwl_priv *priv, struct sk_buff *skb);
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void iwl_apm_stop(struct iwl_priv *priv);
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int iwl_apm_init(struct iwl_priv *priv);
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void iwlagn_fw_error(struct iwl_priv *priv, bool ondemand);
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const char *get_cmd_string(u8 cmd);
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bool iwl_check_for_ct_kill(struct iwl_priv *priv);
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void iwl_stop_sw_queue(struct iwl_priv *priv, u8 ac);
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void iwl_wake_sw_queue(struct iwl_priv *priv, u8 ac);
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#ifdef CONFIG_IWLWIFI_DEBUGFS
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void iwl_reset_traffic_log(struct iwl_priv *priv);
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#endif /* CONFIG_IWLWIFI_DEBUGFS */
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#ifdef CONFIG_IWLWIFI_DEBUG
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void iwl_print_rx_config_cmd(struct iwl_priv *priv,
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enum iwl_rxon_context_id ctxid);
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#else
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static inline void iwl_print_rx_config_cmd(struct iwl_priv *priv,
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enum iwl_rxon_context_id ctxid)
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{
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}
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#endif
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#define IWL_CMD(x) case x: return #x
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#define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo))))
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#define IWL_TRAFFIC_ENTRIES (256)
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#define IWL_TRAFFIC_ENTRY_SIZE (64)
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/*****************************************************
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* DRIVER STATUS FUNCTIONS
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******************************************************/
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#define STATUS_HCMD_ACTIVE 0 /* host command in progress */
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/* 1 is unused (used to be STATUS_HCMD_SYNC_ACTIVE) */
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#define STATUS_INT_ENABLED 2
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#define STATUS_RF_KILL_HW 3
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#define STATUS_CT_KILL 4
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#define STATUS_INIT 5
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#define STATUS_ALIVE 6
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#define STATUS_READY 7
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#define STATUS_TEMPERATURE 8
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#define STATUS_GEO_CONFIGURED 9
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#define STATUS_EXIT_PENDING 10
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#define STATUS_STATISTICS 12
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#define STATUS_SCANNING 13
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#define STATUS_SCAN_ABORTING 14
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#define STATUS_SCAN_HW 15
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#define STATUS_POWER_PMI 16
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#define STATUS_FW_ERROR 17
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#define STATUS_DEVICE_ENABLED 18
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#define STATUS_CHANNEL_SWITCH_PENDING 19
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#define STATUS_SCAN_COMPLETE 20
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static inline int iwl_is_ready(struct iwl_shared *shrd)
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{
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/* The adapter is 'ready' if READY and GEO_CONFIGURED bits are
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* set but EXIT_PENDING is not */
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return test_bit(STATUS_READY, &shrd->status) &&
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test_bit(STATUS_GEO_CONFIGURED, &shrd->status) &&
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!test_bit(STATUS_EXIT_PENDING, &shrd->status);
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}
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static inline int iwl_is_alive(struct iwl_shared *shrd)
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|
{
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return test_bit(STATUS_ALIVE, &shrd->status);
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}
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static inline int iwl_is_init(struct iwl_shared *shrd)
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|
{
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return test_bit(STATUS_INIT, &shrd->status);
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}
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static inline int iwl_is_rfkill_hw(struct iwl_shared *shrd)
|
|
{
|
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return test_bit(STATUS_RF_KILL_HW, &shrd->status);
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}
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static inline int iwl_is_rfkill(struct iwl_shared *shrd)
|
|
{
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return iwl_is_rfkill_hw(shrd);
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}
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static inline int iwl_is_ctkill(struct iwl_shared *shrd)
|
|
{
|
|
return test_bit(STATUS_CT_KILL, &shrd->status);
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|
}
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|
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static inline int iwl_is_ready_rf(struct iwl_shared *shrd)
|
|
{
|
|
if (iwl_is_rfkill(shrd))
|
|
return 0;
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|
|
|
return iwl_is_ready(shrd);
|
|
}
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|
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#endif /* #__iwl_shared_h__ */
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