/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
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Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
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Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
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<http://rt2x00.serialmonkey.com>
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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/interrupt.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 <linux/kfifo.h>
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#include <linux/hrtimer.h>
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#include <linux/average.h>
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#include <linux/usb.h>
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#include <linux/clk.h>
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#include <net/mac80211.h>
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#include "rt2x00debug.h"
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#include "rt2x00dump.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 "2.3.0"
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#define DRV_PROJECT "http://rt2x00.serialmonkey.com"
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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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#ifdef CONFIG_RT2X00_DEBUG
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#define DEBUG
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#endif /* CONFIG_RT2X00_DEBUG */
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/* Utility printing macros
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* rt2x00_probe_err is for messages when rt2x00_dev is uninitialized
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*/
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#define rt2x00_probe_err(fmt, ...) \
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printk(KERN_ERR KBUILD_MODNAME ": %s: Error - " fmt, \
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__func__, ##__VA_ARGS__)
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#define rt2x00_err(dev, fmt, ...) \
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wiphy_err_ratelimited((dev)->hw->wiphy, "%s: Error - " fmt, \
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__func__, ##__VA_ARGS__)
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#define rt2x00_warn(dev, fmt, ...) \
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wiphy_warn_ratelimited((dev)->hw->wiphy, "%s: Warning - " fmt, \
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__func__, ##__VA_ARGS__)
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#define rt2x00_info(dev, fmt, ...) \
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wiphy_info((dev)->hw->wiphy, "%s: Info - " fmt, \
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__func__, ##__VA_ARGS__)
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/* Various debug levels */
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#define rt2x00_dbg(dev, fmt, ...) \
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wiphy_dbg((dev)->hw->wiphy, "%s: Debug - " fmt, \
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__func__, ##__VA_ARGS__)
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#define rt2x00_eeprom_dbg(dev, fmt, ...) \
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wiphy_dbg((dev)->hw->wiphy, "%s: EEPROM recovery - " fmt, \
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__func__, ##__VA_ARGS__)
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/*
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* Duration calculations
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* The rate variable passed is: 100kbs.
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* To convert from bytes to bits we multiply size with 8,
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* then the size is multiplied with 10 to make the
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* real rate -> rate argument correction.
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*/
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#define GET_DURATION(__size, __rate) (((__size) * 8 * 10) / (__rate))
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#define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
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/*
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* Determine the number of L2 padding bytes required between the header and
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* the payload.
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*/
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#define L2PAD_SIZE(__hdrlen) (-(__hdrlen) & 3)
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/*
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* Determine the alignment requirement,
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* to make sure the 802.11 payload is padded to a 4-byte boundrary
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* we must determine the address of the payload and calculate the
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* amount of bytes needed to move the data.
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*/
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#define ALIGN_SIZE(__skb, __header) \
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(((unsigned long)((__skb)->data + (__header))) & 3)
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/*
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* Constants for extra TX headroom for alignment purposes.
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*/
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#define RT2X00_ALIGN_SIZE 4 /* Only whole frame needs alignment */
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#define RT2X00_L2PAD_SIZE 8 /* Both header & payload need alignment */
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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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GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10))
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#define SHORT_EIFS (SIFS + SHORT_DIFS + \
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GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10))
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enum rt2x00_chip_intf {
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RT2X00_CHIP_INTF_PCI,
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RT2X00_CHIP_INTF_PCIE,
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RT2X00_CHIP_INTF_USB,
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RT2X00_CHIP_INTF_SOC,
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};
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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 0x2460
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#define RT2560 0x2560
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#define RT2570 0x2570
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#define RT2661 0x2661
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#define RT2573 0x2573
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#define RT2860 0x2860 /* 2.4GHz */
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#define RT2872 0x2872 /* WSOC */
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#define RT2883 0x2883 /* WSOC */
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#define RT3070 0x3070
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#define RT3071 0x3071
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#define RT3090 0x3090 /* 2.4GHz PCIe */
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#define RT3290 0x3290
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#define RT3352 0x3352 /* WSOC */
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#define RT3390 0x3390
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#define RT3572 0x3572
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#define RT3593 0x3593
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#define RT3883 0x3883 /* WSOC */
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#define RT5350 0x5350 /* WSOC 2.4GHz */
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#define RT5390 0x5390 /* 2.4GHz */
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#define RT5392 0x5392 /* 2.4GHz */
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#define RT5592 0x5592
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#define RT6352 0x6352 /* WSOC 2.4GHz */
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u16 rf;
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u16 rev;
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enum rt2x00_chip_intf intf;
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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 max_power;
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short default_power1;
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short default_power2;
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short default_power3;
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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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u8 rx_chain_num;
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u8 tx_chain_num;
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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 by driver
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* The rssi value is provided by rt2x00lib during the
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* link_tuner() callback function.
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* The false_cca field is filled during the link_stats()
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* callback function and could be used during the
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* link_tuner() callback function.
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*/
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int rssi;
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int false_cca;
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/*
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* VGC levels
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* Hardware driver will tune the VGC level during each call
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* to the link_tuner() callback function. This vgc_level is
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* is determined based on the link quality statistics like
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* average RSSI and the false CCA count.
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*
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* In some cases the drivers need to differentiate between
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* the currently "desired" VGC level and the level configured
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* in the hardware. The latter is important to reduce the
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* number of BBP register reads to reduce register access
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* overhead. For this reason we store both values here.
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*/
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u8 vgc_level;
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u8 vgc_level_reg;
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/*
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* Statistics required for Signal quality calculation.
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* These fields might be changed during the link_stats()
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* callback function.
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*/
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int rx_success;
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int rx_failed;
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int tx_success;
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int tx_failed;
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};
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DECLARE_EWMA(rssi, 10, 8)
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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 history information for the antenna.
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* Used to determine when to switch antenna
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* when using software diversity.
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*/
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int rssi_history;
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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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struct ewma_rssi 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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* Currently active average RSSI value
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*/
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struct ewma_rssi avg_rssi;
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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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* Work structure for scheduling periodic watchdog monitoring.
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* This work must be scheduled on the kernel workqueue, while
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* all other work structures must be queued on the mac80211
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* workqueue. This guarantees that the watchdog can schedule
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* other work structures and wait for their completion in order
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* to bring the device/driver back into the desired state.
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*/
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struct delayed_work watchdog_work;
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unsigned int watchdog_interval;
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bool watchdog_disabled;
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/*
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* Work structure for scheduling periodic AGC adjustments.
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*/
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struct delayed_work agc_work;
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/*
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* Work structure for scheduling periodic VCO calibration.
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*/
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struct delayed_work vco_work;
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};
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enum rt2x00_delayed_flags {
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DELAYED_UPDATE_BEACON,
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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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* beacon->skb must be protected with the mutex.
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*/
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struct mutex beacon_skb_mutex;
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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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bool enable_beacon;
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/*
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* Actions that needed rescheduling.
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*/
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unsigned long delayed_flags;
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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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atomic_t 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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* @ht: Driver HT Capabilities (See &ieee80211_sta_ht_cap).
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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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struct ieee80211_sta_ht_cap ht;
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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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};
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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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u32 basic_rates;
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int 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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u16 beacon_int;
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u16 ht_opmode;
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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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u8 key[16];
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u8 tx_mic[8];
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u8 rx_mic[8];
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int wcid;
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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 nl80211_iftype type;
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/*
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* TSF sync value, this is dependent 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 addresses are simple array of bytes,
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* these arrays are little endian, so when sending the addresses
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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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* Private structure for storing STA details
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* wcid: Wireless Client ID
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*/
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struct rt2x00_sta {
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int wcid;
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};
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static inline struct rt2x00_sta* sta_to_rt2x00_sta(struct ieee80211_sta *sta)
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{
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return (struct rt2x00_sta *)sta->drv_priv;
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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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* TX status tasklet handler.
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*/
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void (*txstatus_tasklet) (struct tasklet_struct *t);
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void (*pretbtt_tasklet) (struct tasklet_struct *t);
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void (*tbtt_tasklet) (struct tasklet_struct *t);
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void (*rxdone_tasklet) (struct tasklet_struct *t);
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void (*autowake_tasklet) (struct tasklet_struct *t);
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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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int (*check_firmware) (struct rt2x00_dev *rt2x00dev,
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const u8 *data, const size_t len);
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int (*load_firmware) (struct rt2x00_dev *rt2x00dev,
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const u8 *data, 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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*/
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bool (*get_entry_state) (struct queue_entry *entry);
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void (*clear_entry) (struct queue_entry *entry);
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/*
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* Radio control handlers.
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*/
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int (*set_device_state) (struct rt2x00_dev *rt2x00dev,
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enum dev_state state);
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int (*rfkill_poll) (struct rt2x00_dev *rt2x00dev);
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void (*link_stats) (struct rt2x00_dev *rt2x00dev,
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struct link_qual *qual);
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void (*reset_tuner) (struct rt2x00_dev *rt2x00dev,
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struct link_qual *qual);
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void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
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struct link_qual *qual, const u32 count);
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void (*gain_calibration) (struct rt2x00_dev *rt2x00dev);
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void (*vco_calibration) (struct rt2x00_dev *rt2x00dev);
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/*
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* Data queue handlers.
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*/
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void (*watchdog) (struct rt2x00_dev *rt2x00dev);
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void (*start_queue) (struct data_queue *queue);
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void (*kick_queue) (struct data_queue *queue);
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void (*stop_queue) (struct data_queue *queue);
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void (*flush_queue) (struct data_queue *queue, bool drop);
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void (*tx_dma_done) (struct queue_entry *entry);
|
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/*
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* TX control handlers
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*/
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void (*write_tx_desc) (struct queue_entry *entry,
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struct txentry_desc *txdesc);
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void (*write_tx_data) (struct queue_entry *entry,
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struct txentry_desc *txdesc);
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void (*write_beacon) (struct queue_entry *entry,
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struct txentry_desc *txdesc);
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void (*clear_beacon) (struct queue_entry *entry);
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int (*get_tx_data_len) (struct queue_entry *entry);
|
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/*
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* RX control handlers
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*/
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void (*fill_rxdone) (struct queue_entry *entry,
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struct rxdone_entry_desc *rxdesc);
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/*
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* Configuration handlers.
|
*/
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int (*config_shared_key) (struct rt2x00_dev *rt2x00dev,
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struct rt2x00lib_crypto *crypto,
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struct ieee80211_key_conf *key);
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int (*config_pairwise_key) (struct rt2x00_dev *rt2x00dev,
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struct rt2x00lib_crypto *crypto,
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struct ieee80211_key_conf *key);
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void (*config_filter) (struct rt2x00_dev *rt2x00dev,
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const unsigned int filter_flags);
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void (*config_intf) (struct rt2x00_dev *rt2x00dev,
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struct rt2x00_intf *intf,
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struct rt2x00intf_conf *conf,
|
const unsigned int flags);
|
#define CONFIG_UPDATE_TYPE ( 1 << 1 )
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#define CONFIG_UPDATE_MAC ( 1 << 2 )
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#define CONFIG_UPDATE_BSSID ( 1 << 3 )
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void (*config_erp) (struct rt2x00_dev *rt2x00dev,
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struct rt2x00lib_erp *erp,
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u32 changed);
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void (*config_ant) (struct rt2x00_dev *rt2x00dev,
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struct antenna_setup *ant);
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void (*config) (struct rt2x00_dev *rt2x00dev,
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struct rt2x00lib_conf *libconf,
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const unsigned int changed_flags);
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void (*pre_reset_hw) (struct rt2x00_dev *rt2x00dev);
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int (*sta_add) (struct rt2x00_dev *rt2x00dev,
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struct ieee80211_vif *vif,
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struct ieee80211_sta *sta);
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int (*sta_remove) (struct rt2x00_dev *rt2x00dev,
|
struct ieee80211_sta *sta);
|
};
|
|
/*
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* rt2x00 driver callback operation structure.
|
*/
|
struct rt2x00_ops {
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const char *name;
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const unsigned int drv_data_size;
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const unsigned int max_ap_intf;
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const unsigned int eeprom_size;
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const unsigned int rf_size;
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const unsigned int tx_queues;
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void (*queue_init)(struct data_queue *queue);
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const struct rt2x00lib_ops *lib;
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const void *drv;
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const struct ieee80211_ops *hw;
|
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
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const struct rt2x00debug *debugfs;
|
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
|
};
|
|
/*
|
* rt2x00 state flags
|
*/
|
enum rt2x00_state_flags {
|
/*
|
* Device flags
|
*/
|
DEVICE_STATE_PRESENT,
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DEVICE_STATE_REGISTERED_HW,
|
DEVICE_STATE_INITIALIZED,
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DEVICE_STATE_STARTED,
|
DEVICE_STATE_ENABLED_RADIO,
|
DEVICE_STATE_SCANNING,
|
DEVICE_STATE_FLUSHING,
|
DEVICE_STATE_RESET,
|
|
/*
|
* Driver configuration
|
*/
|
CONFIG_CHANNEL_HT40,
|
CONFIG_POWERSAVING,
|
CONFIG_HT_DISABLED,
|
CONFIG_MONITORING,
|
|
/*
|
* Mark we currently are sequentially reading TX_STA_FIFO register
|
* FIXME: this is for only rt2800usb, should go to private data
|
*/
|
TX_STATUS_READING,
|
};
|
|
/*
|
* rt2x00 capability flags
|
*/
|
enum rt2x00_capability_flags {
|
/*
|
* Requirements
|
*/
|
REQUIRE_FIRMWARE,
|
REQUIRE_BEACON_GUARD,
|
REQUIRE_ATIM_QUEUE,
|
REQUIRE_DMA,
|
REQUIRE_COPY_IV,
|
REQUIRE_L2PAD,
|
REQUIRE_TXSTATUS_FIFO,
|
REQUIRE_TASKLET_CONTEXT,
|
REQUIRE_SW_SEQNO,
|
REQUIRE_HT_TX_DESC,
|
REQUIRE_PS_AUTOWAKE,
|
REQUIRE_DELAYED_RFKILL,
|
|
/*
|
* Capabilities
|
*/
|
CAPABILITY_HW_BUTTON,
|
CAPABILITY_HW_CRYPTO,
|
CAPABILITY_POWER_LIMIT,
|
CAPABILITY_CONTROL_FILTERS,
|
CAPABILITY_CONTROL_FILTER_PSPOLL,
|
CAPABILITY_PRE_TBTT_INTERRUPT,
|
CAPABILITY_LINK_TUNING,
|
CAPABILITY_FRAME_TYPE,
|
CAPABILITY_RF_SEQUENCE,
|
CAPABILITY_EXTERNAL_LNA_A,
|
CAPABILITY_EXTERNAL_LNA_BG,
|
CAPABILITY_DOUBLE_ANTENNA,
|
CAPABILITY_BT_COEXIST,
|
CAPABILITY_VCO_RECALIBRATION,
|
CAPABILITY_EXTERNAL_PA_TX0,
|
CAPABILITY_EXTERNAL_PA_TX1,
|
CAPABILITY_RESTART_HW,
|
};
|
|
/*
|
* Interface combinations
|
*/
|
enum {
|
IF_COMB_AP = 0,
|
NUM_IF_COMB,
|
};
|
|
/*
|
* 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}
|
* macros should be used for correct typecasting.
|
*/
|
struct device *dev;
|
|
/*
|
* Callback functions.
|
*/
|
const struct rt2x00_ops *ops;
|
|
/*
|
* Driver data.
|
*/
|
void *drv_data;
|
|
/*
|
* IEEE80211 control structure.
|
*/
|
struct ieee80211_hw *hw;
|
struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
|
enum nl80211_band curr_band;
|
int curr_freq;
|
|
/*
|
* 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 state flags.
|
* In these flags the current status is stored.
|
* Access to these flags should occur atomically.
|
*/
|
unsigned long flags;
|
|
/*
|
* Device capabiltiy flags.
|
* In these flags the device/driver capabilities are stored.
|
* Access to these flags should occur non-atomically.
|
*/
|
unsigned long cap_flags;
|
|
/*
|
* Device information, Bus IRQ and name (PCI, SoC)
|
*/
|
int irq;
|
const char *name;
|
|
/*
|
* 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.
|
*/
|
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.
|
* For PCI and USB devices it protects against concurrent indirect
|
* register access (BBP, RF, MCU) since accessing those
|
* registers require multiple calls to the CSR registers.
|
* For USB devices it also protects the csr_cache since that
|
* field is used for normal CSR access and it cannot support
|
* multiple callers simultaneously.
|
*/
|
struct mutex csr_mutex;
|
|
/*
|
* Mutex to synchronize config and link tuner.
|
*/
|
struct mutex conf_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.
|
* - Beaconing enabled count.
|
*/
|
unsigned int intf_ap_count;
|
unsigned int intf_sta_count;
|
unsigned int intf_associated;
|
unsigned int intf_beaconing;
|
|
/*
|
* Interface combinations
|
*/
|
struct ieee80211_iface_limit if_limits_ap;
|
struct ieee80211_iface_combination if_combinations[NUM_IF_COMB];
|
|
/*
|
* 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;
|
|
/*
|
* Current TX power value.
|
*/
|
u16 tx_power;
|
|
/*
|
* Current retry values.
|
*/
|
u8 short_retry;
|
u8 long_retry;
|
|
/*
|
* Rssi <-> Dbm offset
|
*/
|
u8 rssi_offset;
|
|
/*
|
* Frequency offset.
|
*/
|
u8 freq_offset;
|
|
/*
|
* Association id.
|
*/
|
u16 aid;
|
|
/*
|
* Beacon interval.
|
*/
|
u16 beacon_int;
|
|
/**
|
* Timestamp of last received beacon
|
*/
|
unsigned long last_beacon;
|
|
/*
|
* Low level statistics which will have
|
* to be kept up to date while device is running.
|
*/
|
struct ieee80211_low_level_stats low_level_stats;
|
|
/**
|
* Work queue for all work which should not be placed
|
* on the mac80211 workqueue (because of dependencies
|
* between various work structures).
|
*/
|
struct workqueue_struct *workqueue;
|
|
/*
|
* 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;
|
|
/**
|
* Scheduled work for TX/RX done handling (USB devices)
|
*/
|
struct work_struct rxdone_work;
|
struct work_struct txdone_work;
|
|
/*
|
* Powersaving work
|
*/
|
struct delayed_work autowakeup_work;
|
struct work_struct sleep_work;
|
|
/*
|
* Data queue arrays for RX, TX, Beacon and ATIM.
|
*/
|
unsigned int data_queues;
|
struct data_queue *rx;
|
struct data_queue *tx;
|
struct data_queue *bcn;
|
struct data_queue *atim;
|
|
/*
|
* Firmware image.
|
*/
|
const struct firmware *fw;
|
|
/*
|
* FIFO for storing tx status reports between isr and tasklet.
|
*/
|
DECLARE_KFIFO_PTR(txstatus_fifo, u32);
|
|
/*
|
* Timer to ensure tx status reports are read (rt2800usb).
|
*/
|
struct hrtimer txstatus_timer;
|
|
/*
|
* Tasklet for processing tx status reports (rt2800pci).
|
*/
|
struct tasklet_struct txstatus_tasklet;
|
struct tasklet_struct pretbtt_tasklet;
|
struct tasklet_struct tbtt_tasklet;
|
struct tasklet_struct rxdone_tasklet;
|
struct tasklet_struct autowake_tasklet;
|
|
/*
|
* Used for VCO periodic calibration.
|
*/
|
int rf_channel;
|
|
/*
|
* Protect the interrupt mask register.
|
*/
|
spinlock_t irqmask_lock;
|
|
/*
|
* List of BlockAckReq TX entries that need driver BlockAck processing.
|
*/
|
struct list_head bar_list;
|
spinlock_t bar_list_lock;
|
|
/* Extra TX headroom required for alignment purposes. */
|
unsigned int extra_tx_headroom;
|
|
struct usb_anchor *anchor;
|
unsigned int num_proto_errs;
|
|
/* Clock for System On Chip devices. */
|
struct clk *clk;
|
};
|
|
struct rt2x00_bar_list_entry {
|
struct list_head list;
|
struct rcu_head head;
|
|
struct queue_entry *entry;
|
int block_acked;
|
|
/* Relevant parts of the IEEE80211 BAR header */
|
__u8 ra[6];
|
__u8 ta[6];
|
__le16 control;
|
__le16 start_seq_num;
|
};
|
|
/*
|
* Register defines.
|
* Some registers require multiple attempts before success,
|
* in those cases REGISTER_BUSY_COUNT attempts should be
|
* taken with a REGISTER_BUSY_DELAY interval. Due to USB
|
* bus delays, we do not have to loop so many times to wait
|
* for valid register value on that bus.
|
*/
|
#define REGISTER_BUSY_COUNT 100
|
#define REGISTER_USB_BUSY_COUNT 20
|
#define REGISTER_BUSY_DELAY 100
|
|
/*
|
* Generic RF access.
|
* The RF is being accessed by word index.
|
*/
|
static inline u32 rt2x00_rf_read(struct rt2x00_dev *rt2x00dev,
|
const unsigned int word)
|
{
|
BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
|
return rt2x00dev->rf[word - 1];
|
}
|
|
static inline void rt2x00_rf_write(struct rt2x00_dev *rt2x00dev,
|
const unsigned int word, u32 data)
|
{
|
BUG_ON(word < 1 || word > rt2x00dev->ops->rf_size / sizeof(u32));
|
rt2x00dev->rf[word - 1] = data;
|
}
|
|
/*
|
* Generic EEPROM access. The EEPROM is being accessed by word or byte index.
|
*/
|
static inline void *rt2x00_eeprom_addr(struct rt2x00_dev *rt2x00dev,
|
const unsigned int word)
|
{
|
return (void *)&rt2x00dev->eeprom[word];
|
}
|
|
static inline u16 rt2x00_eeprom_read(struct rt2x00_dev *rt2x00dev,
|
const unsigned int word)
|
{
|
return 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);
|
}
|
|
static inline u8 rt2x00_eeprom_byte(struct rt2x00_dev *rt2x00dev,
|
const unsigned int byte)
|
{
|
return *(((u8 *)rt2x00dev->eeprom) + byte);
|
}
|
|
/*
|
* Chipset handlers
|
*/
|
static inline void rt2x00_set_chip(struct rt2x00_dev *rt2x00dev,
|
const u16 rt, const u16 rf, const u16 rev)
|
{
|
rt2x00dev->chip.rt = rt;
|
rt2x00dev->chip.rf = rf;
|
rt2x00dev->chip.rev = rev;
|
|
rt2x00_info(rt2x00dev, "Chipset detected - rt: %04x, rf: %04x, rev: %04x\n",
|
rt2x00dev->chip.rt, rt2x00dev->chip.rf,
|
rt2x00dev->chip.rev);
|
}
|
|
static inline void rt2x00_set_rt(struct rt2x00_dev *rt2x00dev,
|
const u16 rt, const u16 rev)
|
{
|
rt2x00dev->chip.rt = rt;
|
rt2x00dev->chip.rev = rev;
|
|
rt2x00_info(rt2x00dev, "RT chipset %04x, rev %04x detected\n",
|
rt2x00dev->chip.rt, rt2x00dev->chip.rev);
|
}
|
|
static inline void rt2x00_set_rf(struct rt2x00_dev *rt2x00dev, const u16 rf)
|
{
|
rt2x00dev->chip.rf = rf;
|
|
rt2x00_info(rt2x00dev, "RF chipset %04x detected\n",
|
rt2x00dev->chip.rf);
|
}
|
|
static inline bool rt2x00_rt(struct rt2x00_dev *rt2x00dev, const u16 rt)
|
{
|
return (rt2x00dev->chip.rt == rt);
|
}
|
|
static inline bool rt2x00_rf(struct rt2x00_dev *rt2x00dev, const u16 rf)
|
{
|
return (rt2x00dev->chip.rf == rf);
|
}
|
|
static inline u16 rt2x00_rev(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00dev->chip.rev;
|
}
|
|
static inline bool rt2x00_rt_rev(struct rt2x00_dev *rt2x00dev,
|
const u16 rt, const u16 rev)
|
{
|
return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) == rev);
|
}
|
|
static inline bool rt2x00_rt_rev_lt(struct rt2x00_dev *rt2x00dev,
|
const u16 rt, const u16 rev)
|
{
|
return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) < rev);
|
}
|
|
static inline bool rt2x00_rt_rev_gte(struct rt2x00_dev *rt2x00dev,
|
const u16 rt, const u16 rev)
|
{
|
return (rt2x00_rt(rt2x00dev, rt) && rt2x00_rev(rt2x00dev) >= rev);
|
}
|
|
static inline void rt2x00_set_chip_intf(struct rt2x00_dev *rt2x00dev,
|
enum rt2x00_chip_intf intf)
|
{
|
rt2x00dev->chip.intf = intf;
|
}
|
|
static inline bool rt2x00_intf(struct rt2x00_dev *rt2x00dev,
|
enum rt2x00_chip_intf intf)
|
{
|
return (rt2x00dev->chip.intf == intf);
|
}
|
|
static inline bool rt2x00_is_pci(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCI) ||
|
rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
|
}
|
|
static inline bool rt2x00_is_pcie(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_PCIE);
|
}
|
|
static inline bool rt2x00_is_usb(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_USB);
|
}
|
|
static inline bool rt2x00_is_soc(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_intf(rt2x00dev, RT2X00_CHIP_INTF_SOC);
|
}
|
|
/* Helpers for capability flags */
|
|
static inline bool
|
rt2x00_has_cap_flag(struct rt2x00_dev *rt2x00dev,
|
enum rt2x00_capability_flags cap_flag)
|
{
|
return test_bit(cap_flag, &rt2x00dev->cap_flags);
|
}
|
|
static inline bool
|
rt2x00_has_cap_hw_crypto(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_HW_CRYPTO);
|
}
|
|
static inline bool
|
rt2x00_has_cap_power_limit(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_POWER_LIMIT);
|
}
|
|
static inline bool
|
rt2x00_has_cap_control_filters(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_CONTROL_FILTERS);
|
}
|
|
static inline bool
|
rt2x00_has_cap_control_filter_pspoll(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_CONTROL_FILTER_PSPOLL);
|
}
|
|
static inline bool
|
rt2x00_has_cap_pre_tbtt_interrupt(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_PRE_TBTT_INTERRUPT);
|
}
|
|
static inline bool
|
rt2x00_has_cap_link_tuning(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_LINK_TUNING);
|
}
|
|
static inline bool
|
rt2x00_has_cap_frame_type(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_FRAME_TYPE);
|
}
|
|
static inline bool
|
rt2x00_has_cap_rf_sequence(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_RF_SEQUENCE);
|
}
|
|
static inline bool
|
rt2x00_has_cap_external_lna_a(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_EXTERNAL_LNA_A);
|
}
|
|
static inline bool
|
rt2x00_has_cap_external_lna_bg(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_EXTERNAL_LNA_BG);
|
}
|
|
static inline bool
|
rt2x00_has_cap_double_antenna(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_DOUBLE_ANTENNA);
|
}
|
|
static inline bool
|
rt2x00_has_cap_bt_coexist(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_BT_COEXIST);
|
}
|
|
static inline bool
|
rt2x00_has_cap_vco_recalibration(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_VCO_RECALIBRATION);
|
}
|
|
static inline bool
|
rt2x00_has_cap_restart_hw(struct rt2x00_dev *rt2x00dev)
|
{
|
return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_RESTART_HW);
|
}
|
|
/**
|
* rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
|
* @entry: Pointer to &struct queue_entry
|
*
|
* Returns -ENOMEM if mapping fail, 0 otherwise.
|
*/
|
int rt2x00queue_map_txskb(struct queue_entry *entry);
|
|
/**
|
* rt2x00queue_unmap_skb - Unmap a skb from DMA.
|
* @entry: Pointer to &struct queue_entry
|
*/
|
void rt2x00queue_unmap_skb(struct queue_entry *entry);
|
|
/**
|
* rt2x00queue_get_tx_queue - Convert tx queue index to queue pointer
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
* @queue: rt2x00 queue index (see &enum data_queue_qid).
|
*
|
* Returns NULL for non tx queues.
|
*/
|
static inline struct data_queue *
|
rt2x00queue_get_tx_queue(struct rt2x00_dev *rt2x00dev,
|
const enum data_queue_qid queue)
|
{
|
if (queue < rt2x00dev->ops->tx_queues && rt2x00dev->tx)
|
return &rt2x00dev->tx[queue];
|
|
if (queue == QID_ATIM)
|
return rt2x00dev->atim;
|
|
return NULL;
|
}
|
|
/**
|
* 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);
|
|
/**
|
* rt2x00queue_pause_queue - Pause a data queue
|
* @queue: Pointer to &struct data_queue.
|
*
|
* This function will pause the data queue locally, preventing
|
* new frames to be added to the queue (while the hardware is
|
* still allowed to run).
|
*/
|
void rt2x00queue_pause_queue(struct data_queue *queue);
|
|
/**
|
* rt2x00queue_unpause_queue - unpause a data queue
|
* @queue: Pointer to &struct data_queue.
|
*
|
* This function will unpause the data queue locally, allowing
|
* new frames to be added to the queue again.
|
*/
|
void rt2x00queue_unpause_queue(struct data_queue *queue);
|
|
/**
|
* rt2x00queue_start_queue - Start a data queue
|
* @queue: Pointer to &struct data_queue.
|
*
|
* This function will start handling all pending frames in the queue.
|
*/
|
void rt2x00queue_start_queue(struct data_queue *queue);
|
|
/**
|
* rt2x00queue_stop_queue - Halt a data queue
|
* @queue: Pointer to &struct data_queue.
|
*
|
* This function will stop all pending frames in the queue.
|
*/
|
void rt2x00queue_stop_queue(struct data_queue *queue);
|
|
/**
|
* rt2x00queue_flush_queue - Flush a data queue
|
* @queue: Pointer to &struct data_queue.
|
* @drop: True to drop all pending frames.
|
*
|
* This function will flush the queue. After this call
|
* the queue is guaranteed to be empty.
|
*/
|
void rt2x00queue_flush_queue(struct data_queue *queue, bool drop);
|
|
/**
|
* rt2x00queue_start_queues - Start all data queues
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
*
|
* This function will loop through all available queues to start them
|
*/
|
void rt2x00queue_start_queues(struct rt2x00_dev *rt2x00dev);
|
|
/**
|
* rt2x00queue_stop_queues - Halt all data queues
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
*
|
* This function will loop through all available queues to stop
|
* any pending frames.
|
*/
|
void rt2x00queue_stop_queues(struct rt2x00_dev *rt2x00dev);
|
|
/**
|
* rt2x00queue_flush_queues - Flush all data queues
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
* @drop: True to drop all pending frames.
|
*
|
* This function will loop through all available queues to flush
|
* any pending frames.
|
*/
|
void rt2x00queue_flush_queues(struct rt2x00_dev *rt2x00dev, bool drop);
|
|
/*
|
* Debugfs handlers.
|
*/
|
/**
|
* rt2x00debug_dump_frame - Dump a frame to userspace through debugfs.
|
* @rt2x00dev: Pointer to &struct rt2x00_dev.
|
* @type: The type of frame that is being dumped.
|
* @entry: The queue entry containing the frame to be dumped.
|
*/
|
#ifdef CONFIG_RT2X00_LIB_DEBUGFS
|
void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
|
enum rt2x00_dump_type type, struct queue_entry *entry);
|
#else
|
static inline void rt2x00debug_dump_frame(struct rt2x00_dev *rt2x00dev,
|
enum rt2x00_dump_type type,
|
struct queue_entry *entry)
|
{
|
}
|
#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
|
|
/*
|
* Utility functions.
|
*/
|
u32 rt2x00lib_get_bssidx(struct rt2x00_dev *rt2x00dev,
|
struct ieee80211_vif *vif);
|
void rt2x00lib_set_mac_address(struct rt2x00_dev *rt2x00dev, u8 *eeprom_mac_addr);
|
|
/*
|
* Interrupt context handlers.
|
*/
|
void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
|
void rt2x00lib_pretbtt(struct rt2x00_dev *rt2x00dev);
|
void rt2x00lib_dmastart(struct queue_entry *entry);
|
void rt2x00lib_dmadone(struct queue_entry *entry);
|
void rt2x00lib_txdone(struct queue_entry *entry,
|
struct txdone_entry_desc *txdesc);
|
void rt2x00lib_txdone_nomatch(struct queue_entry *entry,
|
struct txdone_entry_desc *txdesc);
|
void rt2x00lib_txdone_noinfo(struct queue_entry *entry, u32 status);
|
void rt2x00lib_rxdone(struct queue_entry *entry, gfp_t gfp);
|
|
/*
|
* mac80211 handlers.
|
*/
|
void rt2x00mac_tx(struct ieee80211_hw *hw,
|
struct ieee80211_tx_control *control,
|
struct sk_buff *skb);
|
int rt2x00mac_start(struct ieee80211_hw *hw);
|
void rt2x00mac_stop(struct ieee80211_hw *hw);
|
void rt2x00mac_reconfig_complete(struct ieee80211_hw *hw,
|
enum ieee80211_reconfig_type reconfig_type);
|
int rt2x00mac_add_interface(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif);
|
void rt2x00mac_remove_interface(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif);
|
int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed);
|
void rt2x00mac_configure_filter(struct ieee80211_hw *hw,
|
unsigned int changed_flags,
|
unsigned int *total_flags,
|
u64 multicast);
|
int rt2x00mac_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
|
bool set);
|
#ifdef CONFIG_RT2X00_LIB_CRYPTO
|
int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
|
struct ieee80211_vif *vif, struct ieee80211_sta *sta,
|
struct ieee80211_key_conf *key);
|
#else
|
#define rt2x00mac_set_key NULL
|
#endif /* CONFIG_RT2X00_LIB_CRYPTO */
|
void rt2x00mac_sw_scan_start(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif,
|
const u8 *mac_addr);
|
void rt2x00mac_sw_scan_complete(struct ieee80211_hw *hw,
|
struct ieee80211_vif *vif);
|
int rt2x00mac_get_stats(struct ieee80211_hw *hw,
|
struct ieee80211_low_level_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,
|
struct ieee80211_vif *vif, u16 queue,
|
const struct ieee80211_tx_queue_params *params);
|
void rt2x00mac_rfkill_poll(struct ieee80211_hw *hw);
|
void rt2x00mac_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
|
u32 queues, bool drop);
|
int rt2x00mac_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant);
|
int rt2x00mac_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant);
|
void rt2x00mac_get_ringparam(struct ieee80211_hw *hw,
|
u32 *tx, u32 *tx_max, u32 *rx, u32 *rx_max);
|
bool rt2x00mac_tx_frames_pending(struct ieee80211_hw *hw);
|
|
/*
|
* Driver allocation handlers.
|
*/
|
int rt2x00lib_probe_dev(struct rt2x00_dev *rt2x00dev);
|
void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev);
|
|
int rt2x00lib_suspend(struct rt2x00_dev *rt2x00dev);
|
int rt2x00lib_resume(struct rt2x00_dev *rt2x00dev);
|
|
#endif /* RT2X00_H */
|
