ba2ab47129
We can optimize lna calculation in IRQ context by calculating most of the value during the config() callback when most of the value is actually influenced. This will be required later by rt2800pci and rt2800usb as well, since they need the lna_gain value during config(). Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
1038 lines
26 KiB
C
1038 lines
26 KiB
C
/*
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Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
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<http://rt2x00.serialmonkey.com>
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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 the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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
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Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Module: rt2x00
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Abstract: rt2x00 global information.
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*/
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#ifndef RT2X00_H
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#define RT2X00_H
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#include <linux/bitops.h>
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#include <linux/skbuff.h>
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#include <linux/workqueue.h>
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#include <linux/firmware.h>
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#include <linux/leds.h>
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#include <linux/mutex.h>
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#include <linux/etherdevice.h>
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#include <net/mac80211.h>
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#include "rt2x00debug.h"
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#include "rt2x00leds.h"
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#include "rt2x00reg.h"
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#include "rt2x00queue.h"
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/*
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* Module information.
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*/
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#define DRV_VERSION "2.2.0"
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#define DRV_PROJECT "http://rt2x00.serialmonkey.com"
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/*
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* Debug definitions.
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* Debug output has to be enabled during compile time.
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*/
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#define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
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printk(__kernlvl "%s -> %s: %s - " __msg, \
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wiphy_name((__dev)->hw->wiphy), __func__, __lvl, ##__args)
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#define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
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printk(__kernlvl "%s -> %s: %s - " __msg, \
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KBUILD_MODNAME, __func__, __lvl, ##__args)
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#ifdef CONFIG_RT2X00_DEBUG
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#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
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DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args);
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#else
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#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
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do { } while (0)
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#endif /* CONFIG_RT2X00_DEBUG */
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/*
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* Various debug levels.
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* The debug levels PANIC and ERROR both indicate serious problems,
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* for this reason they should never be ignored.
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* The special ERROR_PROBE message is for messages that are generated
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* when the rt2x00_dev is not yet initialized.
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*/
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#define PANIC(__dev, __msg, __args...) \
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DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
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#define ERROR(__dev, __msg, __args...) \
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DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
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#define ERROR_PROBE(__msg, __args...) \
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DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
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#define WARNING(__dev, __msg, __args...) \
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DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
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#define NOTICE(__dev, __msg, __args...) \
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DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
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#define INFO(__dev, __msg, __args...) \
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DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
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#define DEBUG(__dev, __msg, __args...) \
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DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
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#define EEPROM(__dev, __msg, __args...) \
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DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
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/*
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* Standard timing and size defines.
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* These values should follow the ieee80211 specifications.
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*/
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#define ACK_SIZE 14
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#define IEEE80211_HEADER 24
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#define PLCP 48
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#define BEACON 100
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#define PREAMBLE 144
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#define SHORT_PREAMBLE 72
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#define SLOT_TIME 20
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#define SHORT_SLOT_TIME 9
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#define SIFS 10
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#define PIFS ( SIFS + SLOT_TIME )
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#define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
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#define DIFS ( PIFS + SLOT_TIME )
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#define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
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#define EIFS ( SIFS + DIFS + \
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(8 * (IEEE80211_HEADER + ACK_SIZE)) )
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#define SHORT_EIFS ( SIFS + SHORT_DIFS + \
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(8 * (IEEE80211_HEADER + ACK_SIZE)) )
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/*
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* Chipset identification
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* The chipset on the device is composed of a RT and RF chip.
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* The chipset combination is important for determining device capabilities.
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*/
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struct rt2x00_chip {
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u16 rt;
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#define RT2460 0x0101
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#define RT2560 0x0201
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#define RT2570 0x1201
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#define RT2561s 0x0301 /* Turbo */
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#define RT2561 0x0302
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#define RT2661 0x0401
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#define RT2571 0x1300
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u16 rf;
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u32 rev;
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};
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/*
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* RF register values that belong to a particular channel.
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*/
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struct rf_channel {
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int channel;
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u32 rf1;
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u32 rf2;
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u32 rf3;
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u32 rf4;
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};
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/*
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* Channel information structure
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*/
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struct channel_info {
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unsigned int flags;
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#define GEOGRAPHY_ALLOWED 0x00000001
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short tx_power1;
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short tx_power2;
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};
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/*
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* Antenna setup values.
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*/
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struct antenna_setup {
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enum antenna rx;
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enum antenna tx;
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};
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/*
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* Quality statistics about the currently active link.
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*/
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struct link_qual {
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/*
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* Statistics required for Link tuning.
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* For the average RSSI value we use the "Walking average" approach.
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* When adding RSSI to the average value the following calculation
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* is needed:
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*
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* avg_rssi = ((avg_rssi * 7) + rssi) / 8;
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*
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* The advantage of this approach is that we only need 1 variable
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* to store the average in (No need for a count and a total).
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* But more importantly, normal average values will over time
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* move less and less towards newly added values this results
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* that with link tuning, the device can have a very good RSSI
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* for a few minutes but when the device is moved away from the AP
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* the average will not decrease fast enough to compensate.
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* The walking average compensates this and will move towards
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* the new values correctly allowing a effective link tuning.
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*/
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int avg_rssi;
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int false_cca;
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/*
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* Statistics required for Signal quality calculation.
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* For calculating the Signal quality we have to determine
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* the total number of success and failed RX and TX frames.
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* After that we also use the average RSSI value to help
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* determining the signal quality.
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* For the calculation we will use the following algorithm:
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*
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* rssi_percentage = (avg_rssi * 100) / rssi_offset
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* rx_percentage = (rx_success * 100) / rx_total
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* tx_percentage = (tx_success * 100) / tx_total
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* avg_signal = ((WEIGHT_RSSI * avg_rssi) +
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* (WEIGHT_TX * tx_percentage) +
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* (WEIGHT_RX * rx_percentage)) / 100
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*
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* This value should then be checked to not be greated then 100.
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*/
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int rx_percentage;
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int rx_success;
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int rx_failed;
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int tx_percentage;
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int tx_success;
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int tx_failed;
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#define WEIGHT_RSSI 20
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#define WEIGHT_RX 40
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#define WEIGHT_TX 40
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};
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/*
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* Antenna settings about the currently active link.
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*/
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struct link_ant {
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/*
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* Antenna flags
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*/
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unsigned int flags;
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#define ANTENNA_RX_DIVERSITY 0x00000001
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#define ANTENNA_TX_DIVERSITY 0x00000002
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#define ANTENNA_MODE_SAMPLE 0x00000004
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/*
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* Currently active TX/RX antenna setup.
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* When software diversity is used, this will indicate
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* which antenna is actually used at this time.
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*/
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struct antenna_setup active;
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/*
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* RSSI information for the different antenna's.
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* These statistics are used to determine when
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* to switch antenna when using software diversity.
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*
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* rssi[0] -> Antenna A RSSI
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* rssi[1] -> Antenna B RSSI
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*/
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int rssi_history[2];
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/*
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* Current RSSI average of the currently active antenna.
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* Similar to the avg_rssi in the link_qual structure
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* this value is updated by using the walking average.
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*/
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int rssi_ant;
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};
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/*
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* To optimize the quality of the link we need to store
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* the quality of received frames and periodically
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* optimize the link.
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*/
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struct link {
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/*
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* Link tuner counter
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* The number of times the link has been tuned
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* since the radio has been switched on.
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*/
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u32 count;
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/*
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* Quality measurement values.
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*/
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struct link_qual qual;
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/*
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* TX/RX antenna setup.
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*/
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struct link_ant ant;
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/*
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* Active VGC level
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*/
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int vgc_level;
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/*
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* Work structure for scheduling periodic link tuning.
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*/
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struct delayed_work work;
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};
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/*
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* Small helper macro to work with moving/walking averages.
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*/
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#define MOVING_AVERAGE(__avg, __val, __samples) \
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( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) )
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/*
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* When we lack RSSI information return something less then -80 to
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* tell the driver to tune the device to maximum sensitivity.
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*/
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#define DEFAULT_RSSI ( -128 )
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/*
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* Link quality access functions.
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*/
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static inline int rt2x00_get_link_rssi(struct link *link)
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{
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if (link->qual.avg_rssi && link->qual.rx_success)
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return link->qual.avg_rssi;
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return DEFAULT_RSSI;
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}
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static inline int rt2x00_get_link_ant_rssi(struct link *link)
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{
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if (link->ant.rssi_ant && link->qual.rx_success)
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return link->ant.rssi_ant;
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return DEFAULT_RSSI;
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}
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static inline void rt2x00_reset_link_ant_rssi(struct link *link)
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{
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link->ant.rssi_ant = 0;
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}
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static inline int rt2x00_get_link_ant_rssi_history(struct link *link,
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enum antenna ant)
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{
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if (link->ant.rssi_history[ant - ANTENNA_A])
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return link->ant.rssi_history[ant - ANTENNA_A];
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return DEFAULT_RSSI;
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}
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static inline int rt2x00_update_ant_rssi(struct link *link, int rssi)
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{
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int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A];
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link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi;
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return old_rssi;
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}
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/*
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* Interface structure
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* Per interface configuration details, this structure
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* is allocated as the private data for ieee80211_vif.
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*/
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struct rt2x00_intf {
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/*
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* All fields within the rt2x00_intf structure
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* must be protected with a spinlock.
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*/
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spinlock_t lock;
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/*
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* BSS configuration. Copied from the structure
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* passed to us through the bss_info_changed()
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* callback funtion.
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*/
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struct ieee80211_bss_conf conf;
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/*
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* MAC of the device.
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*/
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u8 mac[ETH_ALEN];
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/*
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* BBSID of the AP to associate with.
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*/
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u8 bssid[ETH_ALEN];
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/*
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* Entry in the beacon queue which belongs to
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* this interface. Each interface has its own
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* dedicated beacon entry.
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*/
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struct queue_entry *beacon;
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/*
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* Actions that needed rescheduling.
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*/
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unsigned int delayed_flags;
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#define DELAYED_UPDATE_BEACON 0x00000001
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#define DELAYED_CONFIG_ERP 0x00000002
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#define DELAYED_LED_ASSOC 0x00000004
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/*
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* Software sequence counter, this is only required
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* for hardware which doesn't support hardware
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* sequence counting.
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*/
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spinlock_t seqlock;
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u16 seqno;
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};
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static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
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{
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return (struct rt2x00_intf *)vif->drv_priv;
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}
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/**
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* struct hw_mode_spec: Hardware specifications structure
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*
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* Details about the supported modes, rates and channels
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* of a particular chipset. This is used by rt2x00lib
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* to build the ieee80211_hw_mode array for mac80211.
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*
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* @supported_bands: Bitmask contained the supported bands (2.4GHz, 5.2GHz).
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* @supported_rates: Rate types which are supported (CCK, OFDM).
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* @num_channels: Number of supported channels. This is used as array size
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* for @tx_power_a, @tx_power_bg and @channels.
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* @channels: Device/chipset specific channel values (See &struct rf_channel).
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* @channels_info: Additional information for channels (See &struct channel_info).
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*/
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struct hw_mode_spec {
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unsigned int supported_bands;
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#define SUPPORT_BAND_2GHZ 0x00000001
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#define SUPPORT_BAND_5GHZ 0x00000002
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unsigned int supported_rates;
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#define SUPPORT_RATE_CCK 0x00000001
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#define SUPPORT_RATE_OFDM 0x00000002
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unsigned int num_channels;
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const struct rf_channel *channels;
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const struct channel_info *channels_info;
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};
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/*
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* Configuration structure wrapper around the
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* mac80211 configuration structure.
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* When mac80211 configures the driver, rt2x00lib
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* can precalculate values which are equal for all
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* rt2x00 drivers. Those values can be stored in here.
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*/
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struct rt2x00lib_conf {
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struct ieee80211_conf *conf;
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struct rf_channel rf;
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struct channel_info channel;
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struct antenna_setup ant;
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enum ieee80211_band band;
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u32 basic_rates;
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u32 slot_time;
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short sifs;
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short pifs;
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short difs;
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short eifs;
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};
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/*
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* Configuration structure for erp settings.
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*/
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struct rt2x00lib_erp {
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int short_preamble;
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int cts_protection;
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int ack_timeout;
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int ack_consume_time;
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};
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/*
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* Configuration structure for hardware encryption.
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*/
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struct rt2x00lib_crypto {
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enum cipher cipher;
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enum set_key_cmd cmd;
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const u8 *address;
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u32 bssidx;
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u32 aid;
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u8 key[16];
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u8 tx_mic[8];
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u8 rx_mic[8];
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};
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/*
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* Configuration structure wrapper around the
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* rt2x00 interface configuration handler.
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*/
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struct rt2x00intf_conf {
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/*
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* Interface type
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*/
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enum ieee80211_if_types type;
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/*
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* TSF sync value, this is dependant on the operation type.
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*/
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enum tsf_sync sync;
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/*
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* The MAC and BSSID addressess are simple array of bytes,
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* these arrays are little endian, so when sending the addressess
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* to the drivers, copy the it into a endian-signed variable.
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*
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* Note that all devices (except rt2500usb) have 32 bits
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* register word sizes. This means that whatever variable we
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* pass _must_ be a multiple of 32 bits. Otherwise the device
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* might not accept what we are sending to it.
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* This will also make it easier for the driver to write
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* the data to the device.
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*/
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__le32 mac[2];
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__le32 bssid[2];
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};
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/*
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* rt2x00lib callback functions.
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*/
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struct rt2x00lib_ops {
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/*
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* Interrupt handlers.
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*/
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irq_handler_t irq_handler;
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/*
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* Device init handlers.
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*/
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int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
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char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
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u16 (*get_firmware_crc) (const void *data, const size_t len);
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int (*load_firmware) (struct rt2x00_dev *rt2x00dev, const void *data,
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const size_t len);
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/*
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* Device initialization/deinitialization handlers.
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*/
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int (*initialize) (struct rt2x00_dev *rt2x00dev);
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void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
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/*
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* queue initialization handlers
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*/
|
|
void (*init_rxentry) (struct rt2x00_dev *rt2x00dev,
|
|
struct queue_entry *entry);
|
|
void (*init_txentry) (struct rt2x00_dev *rt2x00dev,
|
|
struct queue_entry *entry);
|
|
|
|
/*
|
|
* Radio control handlers.
|
|
*/
|
|
int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
|
|
enum dev_state state);
|
|
int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
|
|
void (*link_stats) (struct rt2x00_dev *rt2x00dev,
|
|
struct link_qual *qual);
|
|
void (*reset_tuner) (struct rt2x00_dev *rt2x00dev);
|
|
void (*link_tuner) (struct rt2x00_dev *rt2x00dev);
|
|
|
|
/*
|
|
* TX control handlers
|
|
*/
|
|
void (*write_tx_desc) (struct rt2x00_dev *rt2x00dev,
|
|
struct sk_buff *skb,
|
|
struct txentry_desc *txdesc);
|
|
int (*write_tx_data) (struct queue_entry *entry);
|
|
void (*write_beacon) (struct queue_entry *entry);
|
|
int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
|
|
struct sk_buff *skb);
|
|
void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
|
|
const enum data_queue_qid queue);
|
|
|
|
/*
|
|
* RX control handlers
|
|
*/
|
|
void (*fill_rxdone) (struct queue_entry *entry,
|
|
struct rxdone_entry_desc *rxdesc);
|
|
|
|
/*
|
|
* Configuration handlers.
|
|
*/
|
|
int (*config_shared_key) (struct rt2x00_dev *rt2x00dev,
|
|
struct rt2x00lib_crypto *crypto,
|
|
struct ieee80211_key_conf *key);
|
|
int (*config_pairwise_key) (struct rt2x00_dev *rt2x00dev,
|
|
struct rt2x00lib_crypto *crypto,
|
|
struct ieee80211_key_conf *key);
|
|
void (*config_filter) (struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int filter_flags);
|
|
void (*config_intf) (struct rt2x00_dev *rt2x00dev,
|
|
struct rt2x00_intf *intf,
|
|
struct rt2x00intf_conf *conf,
|
|
const unsigned int flags);
|
|
#define CONFIG_UPDATE_TYPE ( 1 << 1 )
|
|
#define CONFIG_UPDATE_MAC ( 1 << 2 )
|
|
#define CONFIG_UPDATE_BSSID ( 1 << 3 )
|
|
|
|
void (*config_erp) (struct rt2x00_dev *rt2x00dev,
|
|
struct rt2x00lib_erp *erp);
|
|
void (*config) (struct rt2x00_dev *rt2x00dev,
|
|
struct rt2x00lib_conf *libconf,
|
|
const unsigned int flags);
|
|
#define CONFIG_UPDATE_PHYMODE ( 1 << 1 )
|
|
#define CONFIG_UPDATE_CHANNEL ( 1 << 2 )
|
|
#define CONFIG_UPDATE_TXPOWER ( 1 << 3 )
|
|
#define CONFIG_UPDATE_ANTENNA ( 1 << 4 )
|
|
#define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 )
|
|
#define CONFIG_UPDATE_BEACON_INT ( 1 << 6 )
|
|
#define CONFIG_UPDATE_ALL 0xffff
|
|
};
|
|
|
|
/*
|
|
* rt2x00 driver callback operation structure.
|
|
*/
|
|
struct rt2x00_ops {
|
|
const char *name;
|
|
const unsigned int max_sta_intf;
|
|
const unsigned int max_ap_intf;
|
|
const unsigned int eeprom_size;
|
|
const unsigned int rf_size;
|
|
const unsigned int tx_queues;
|
|
const struct data_queue_desc *rx;
|
|
const struct data_queue_desc *tx;
|
|
const struct data_queue_desc *bcn;
|
|
const struct data_queue_desc *atim;
|
|
const struct rt2x00lib_ops *lib;
|
|
const struct ieee80211_ops *hw;
|
|
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
|
|
const struct rt2x00debug *debugfs;
|
|
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
|
|
};
|
|
|
|
/*
|
|
* rt2x00 device flags
|
|
*/
|
|
enum rt2x00_flags {
|
|
/*
|
|
* Device state flags
|
|
*/
|
|
DEVICE_PRESENT,
|
|
DEVICE_REGISTERED_HW,
|
|
DEVICE_INITIALIZED,
|
|
DEVICE_STARTED,
|
|
DEVICE_STARTED_SUSPEND,
|
|
DEVICE_ENABLED_RADIO,
|
|
DEVICE_DISABLED_RADIO_HW,
|
|
DEVICE_DIRTY_CONFIG,
|
|
|
|
/*
|
|
* Driver requirements
|
|
*/
|
|
DRIVER_REQUIRE_FIRMWARE,
|
|
DRIVER_REQUIRE_BEACON_GUARD,
|
|
DRIVER_REQUIRE_ATIM_QUEUE,
|
|
DRIVER_REQUIRE_SCHEDULED,
|
|
DRIVER_REQUIRE_DMA,
|
|
|
|
/*
|
|
* Driver features
|
|
*/
|
|
CONFIG_SUPPORT_HW_BUTTON,
|
|
CONFIG_SUPPORT_HW_CRYPTO,
|
|
|
|
/*
|
|
* Driver configuration
|
|
*/
|
|
CONFIG_FRAME_TYPE,
|
|
CONFIG_RF_SEQUENCE,
|
|
CONFIG_EXTERNAL_LNA_A,
|
|
CONFIG_EXTERNAL_LNA_BG,
|
|
CONFIG_DOUBLE_ANTENNA,
|
|
CONFIG_DISABLE_LINK_TUNING,
|
|
};
|
|
|
|
/*
|
|
* rt2x00 device structure.
|
|
*/
|
|
struct rt2x00_dev {
|
|
/*
|
|
* Device structure.
|
|
* The structure stored in here depends on the
|
|
* system bus (PCI or USB).
|
|
* When accessing this variable, the rt2x00dev_{pci,usb}
|
|
* macro's should be used for correct typecasting.
|
|
*/
|
|
struct device *dev;
|
|
|
|
/*
|
|
* Callback functions.
|
|
*/
|
|
const struct rt2x00_ops *ops;
|
|
|
|
/*
|
|
* IEEE80211 control structure.
|
|
*/
|
|
struct ieee80211_hw *hw;
|
|
struct ieee80211_supported_band bands[IEEE80211_NUM_BANDS];
|
|
enum ieee80211_band curr_band;
|
|
|
|
/*
|
|
* rfkill structure for RF state switching support.
|
|
* This will only be compiled in when required.
|
|
*/
|
|
#ifdef CONFIG_RT2X00_LIB_RFKILL
|
|
unsigned long rfkill_state;
|
|
#define RFKILL_STATE_ALLOCATED 1
|
|
#define RFKILL_STATE_REGISTERED 2
|
|
struct rfkill *rfkill;
|
|
struct delayed_work rfkill_work;
|
|
#endif /* CONFIG_RT2X00_LIB_RFKILL */
|
|
|
|
/*
|
|
* If enabled, the debugfs interface structures
|
|
* required for deregistration of debugfs.
|
|
*/
|
|
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
|
|
struct rt2x00debug_intf *debugfs_intf;
|
|
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
|
|
|
|
/*
|
|
* LED structure for changing the LED status
|
|
* by mac8011 or the kernel.
|
|
*/
|
|
#ifdef CONFIG_RT2X00_LIB_LEDS
|
|
struct rt2x00_led led_radio;
|
|
struct rt2x00_led led_assoc;
|
|
struct rt2x00_led led_qual;
|
|
u16 led_mcu_reg;
|
|
#endif /* CONFIG_RT2X00_LIB_LEDS */
|
|
|
|
/*
|
|
* Device flags.
|
|
* In these flags the current status and some
|
|
* of the device capabilities are stored.
|
|
*/
|
|
unsigned long flags;
|
|
|
|
/*
|
|
* Chipset identification.
|
|
*/
|
|
struct rt2x00_chip chip;
|
|
|
|
/*
|
|
* hw capability specifications.
|
|
*/
|
|
struct hw_mode_spec spec;
|
|
|
|
/*
|
|
* This is the default TX/RX antenna setup as indicated
|
|
* by the device's EEPROM. When mac80211 sets its
|
|
* antenna value to 0 we should be using these values.
|
|
*/
|
|
struct antenna_setup default_ant;
|
|
|
|
/*
|
|
* Register pointers
|
|
* csr.base: CSR base register address. (PCI)
|
|
* csr.cache: CSR cache for usb_control_msg. (USB)
|
|
*/
|
|
union csr {
|
|
void __iomem *base;
|
|
void *cache;
|
|
} csr;
|
|
|
|
/*
|
|
* Mutex to protect register accesses on USB devices.
|
|
* There are 2 reasons this is needed, one is to ensure
|
|
* use of the csr_cache (for USB devices) by one thread
|
|
* isn't corrupted by another thread trying to access it.
|
|
* The other is that access to BBP and RF registers
|
|
* require multiple BUS transactions and if another thread
|
|
* attempted to access one of those registers at the same
|
|
* time one of the writes could silently fail.
|
|
*/
|
|
struct mutex usb_cache_mutex;
|
|
|
|
/*
|
|
* Current packet filter configuration for the device.
|
|
* This contains all currently active FIF_* flags send
|
|
* to us by mac80211 during configure_filter().
|
|
*/
|
|
unsigned int packet_filter;
|
|
|
|
/*
|
|
* Interface details:
|
|
* - Open ap interface count.
|
|
* - Open sta interface count.
|
|
* - Association count.
|
|
*/
|
|
unsigned int intf_ap_count;
|
|
unsigned int intf_sta_count;
|
|
unsigned int intf_associated;
|
|
|
|
/*
|
|
* Link quality
|
|
*/
|
|
struct link link;
|
|
|
|
/*
|
|
* EEPROM data.
|
|
*/
|
|
__le16 *eeprom;
|
|
|
|
/*
|
|
* Active RF register values.
|
|
* These are stored here so we don't need
|
|
* to read the rf registers and can directly
|
|
* use this value instead.
|
|
* This field should be accessed by using
|
|
* rt2x00_rf_read() and rt2x00_rf_write().
|
|
*/
|
|
u32 *rf;
|
|
|
|
/*
|
|
* LNA gain
|
|
*/
|
|
short lna_gain;
|
|
|
|
/*
|
|
* USB Max frame size (for rt2500usb & rt73usb).
|
|
*/
|
|
u16 usb_maxpacket;
|
|
|
|
/*
|
|
* Current TX power value.
|
|
*/
|
|
u16 tx_power;
|
|
|
|
/*
|
|
* Rssi <-> Dbm offset
|
|
*/
|
|
u8 rssi_offset;
|
|
|
|
/*
|
|
* Frequency offset (for rt61pci & rt73usb).
|
|
*/
|
|
u8 freq_offset;
|
|
|
|
/*
|
|
* Low level statistics which will have
|
|
* to be kept up to date while device is running.
|
|
*/
|
|
struct ieee80211_low_level_stats low_level_stats;
|
|
|
|
/*
|
|
* RX configuration information.
|
|
*/
|
|
struct ieee80211_rx_status rx_status;
|
|
|
|
/*
|
|
* Scheduled work.
|
|
* NOTE: intf_work will use ieee80211_iterate_active_interfaces()
|
|
* which means it cannot be placed on the hw->workqueue
|
|
* due to RTNL locking requirements.
|
|
*/
|
|
struct work_struct intf_work;
|
|
struct work_struct filter_work;
|
|
|
|
/*
|
|
* Data queue arrays for RX, TX and Beacon.
|
|
* The Beacon array also contains the Atim queue
|
|
* if that is supported by the device.
|
|
*/
|
|
unsigned int data_queues;
|
|
struct data_queue *rx;
|
|
struct data_queue *tx;
|
|
struct data_queue *bcn;
|
|
|
|
/*
|
|
* Firmware image.
|
|
*/
|
|
const struct firmware *fw;
|
|
};
|
|
|
|
/*
|
|
* Generic RF access.
|
|
* The RF is being accessed by word index.
|
|
*/
|
|
static inline void rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int word, u32 *data)
|
|
{
|
|
*data = rt2x00dev->rf[word];
|
|
}
|
|
|
|
static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int word, u32 data)
|
|
{
|
|
rt2x00dev->rf[word] = data;
|
|
}
|
|
|
|
/*
|
|
* Generic EEPROM access.
|
|
* The EEPROM is being accessed by word index.
|
|
*/
|
|
static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int word)
|
|
{
|
|
return (void *)&rt2x00dev->eeprom[word];
|
|
}
|
|
|
|
static inline void rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int word, u16 *data)
|
|
{
|
|
*data = le16_to_cpu(rt2x00dev->eeprom[word]);
|
|
}
|
|
|
|
static inline void rt2x00_eeprom_write(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int word, u16 data)
|
|
{
|
|
rt2x00dev->eeprom[word] = cpu_to_le16(data);
|
|
}
|
|
|
|
/*
|
|
* Chipset handlers
|
|
*/
|
|
static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
|
|
const u16 rt, const u16 rf, const u32 rev)
|
|
{
|
|
INFO(rt2x00dev,
|
|
"Chipset detected - rt: %04x, rf: %04x, rev: %08x.\n",
|
|
rt, rf, rev);
|
|
|
|
rt2x00dev->chip.rt = rt;
|
|
rt2x00dev->chip.rf = rf;
|
|
rt2x00dev->chip.rev = rev;
|
|
}
|
|
|
|
static inline char rt2x00_rt(const struct rt2x00_chip *chipset, const u16 chip)
|
|
{
|
|
return (chipset->rt == chip);
|
|
}
|
|
|
|
static inline char rt2x00_rf(const struct rt2x00_chip *chipset, const u16 chip)
|
|
{
|
|
return (chipset->rf == chip);
|
|
}
|
|
|
|
static inline u16 rt2x00_rev(const struct rt2x00_chip *chipset)
|
|
{
|
|
return chipset->rev;
|
|
}
|
|
|
|
static inline u16 rt2x00_check_rev(const struct rt2x00_chip *chipset,
|
|
const u32 rev)
|
|
{
|
|
return (((chipset->rev & 0xffff0) == rev) &&
|
|
!!(chipset->rev & 0x0000f));
|
|
}
|
|
|
|
/*
|
|
* Duration calculations
|
|
* The rate variable passed is: 100kbs.
|
|
* To convert from bytes to bits we multiply size with 8,
|
|
* then the size is multiplied with 10 to make the
|
|
* real rate -> rate argument correction.
|
|
*/
|
|
static inline u16 get_duration(const unsigned int size, const u8 rate)
|
|
{
|
|
return ((size * 8 * 10) / rate);
|
|
}
|
|
|
|
static inline u16 get_duration_res(const unsigned int size, const u8 rate)
|
|
{
|
|
return ((size * 8 * 10) % rate);
|
|
}
|
|
|
|
/**
|
|
* rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
|
* @skb: The skb to map.
|
|
*/
|
|
void rt2x00queue_map_txskb(struct rt2x00_dev *rt2x00dev, struct sk_buff *skb);
|
|
|
|
/**
|
|
* rt2x00queue_get_queue - Convert queue index to queue pointer
|
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
|
* @queue: rt2x00 queue index (see &enum data_queue_qid).
|
|
*/
|
|
struct data_queue *rt2x00queue_get_queue(struct rt2x00_dev *rt2x00dev,
|
|
const enum data_queue_qid queue);
|
|
|
|
/**
|
|
* rt2x00queue_get_entry - Get queue entry where the given index points to.
|
|
* @queue: Pointer to &struct data_queue from where we obtain the entry.
|
|
* @index: Index identifier for obtaining the correct index.
|
|
*/
|
|
struct queue_entry *rt2x00queue_get_entry(struct data_queue *queue,
|
|
enum queue_index index);
|
|
|
|
/*
|
|
* Interrupt context handlers.
|
|
*/
|
|
void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
|
|
void rt2x00lib_txdone(struct queue_entry *entry,
|
|
struct txdone_entry_desc *txdesc);
|
|
void rt2x00lib_rxdone(struct rt2x00_dev *rt2x00dev,
|
|
struct queue_entry *entry);
|
|
|
|
/*
|
|
* mac80211 handlers.
|
|
*/
|
|
int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
|
|
int rt2x00mac_start(struct ieee80211_hw *hw);
|
|
void rt2x00mac_stop(struct ieee80211_hw *hw);
|
|
int rt2x00mac_add_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_if_init_conf *conf);
|
|
void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_if_init_conf *conf);
|
|
int rt2x00mac_config(struct ieee80211_hw *hw, struct ieee80211_conf *conf);
|
|
int rt2x00mac_config_interface(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_if_conf *conf);
|
|
void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
|
|
unsigned int changed_flags,
|
|
unsigned int *total_flags,
|
|
int mc_count, struct dev_addr_list *mc_list);
|
|
#ifdef CONFIG_RT2X00_LIB_CRYPTO
|
|
int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
|
|
const u8 *local_address, const u8 *address,
|
|
struct ieee80211_key_conf *key);
|
|
#else
|
|
#define rt2x00mac_set_key NULL
|
|
#endif /* CONFIG_RT2X00_LIB_CRYPTO */
|
|
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
|
|
struct ieee80211_low_level_stats *stats);
|
|
int rt2x00mac_get_tx_stats(struct ieee80211_hw *hw,
|
|
struct ieee80211_tx_queue_stats *stats);
|
|
void rt2x00mac_bss_info_changed(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
struct ieee80211_bss_conf *bss_conf,
|
|
u32 changes);
|
|
int rt2x00mac_conf_tx(struct ieee80211_hw *hw, u16 queue,
|
|
const struct ieee80211_tx_queue_params *params);
|
|
|
|
/*
|
|
* Driver allocation handlers.
|
|
*/
|
|
int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
|
|
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
|
|
#ifdef CONFIG_PM
|
|
int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev, pm_message_t state);
|
|
int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
|
|
#endif /* CONFIG_PM */
|
|
|
|
#endif /* RT2X00_H */
|