forked from Minki/linux
471b3efdfc
This patch (based on Ron Rindjunsky's) creates a framework for a unified way to pass BSS configuration to drivers that require the information, e.g. for implementing power save mode. This patch introduces new ieee80211_bss_conf structure that is passed to the driver via the new bss_info_changed() callback when the BSS configuration changes. This new BSS configuration infrastructure adds the following new features: * drivers are notified of their association AID * drivers are notified of association status and replaces the erp_ie_changed() callback. The patch also does the relevant driver updates for the latter change. Signed-off-by: Ron Rindjunsky <ron.rindjunsky@intel.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
957 lines
24 KiB
C
957 lines
24 KiB
C
/*
|
|
Copyright (C) 2004 - 2007 rt2x00 SourceForge Project
|
|
<http://rt2x00.serialmonkey.com>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the
|
|
Free Software Foundation, Inc.,
|
|
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
Module: rt2x00
|
|
Abstract: rt2x00 global information.
|
|
*/
|
|
|
|
#ifndef RT2X00_H
|
|
#define RT2X00_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/prefetch.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/firmware.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/etherdevice.h>
|
|
|
|
#include <net/mac80211.h>
|
|
|
|
#include "rt2x00debug.h"
|
|
#include "rt2x00reg.h"
|
|
#include "rt2x00ring.h"
|
|
|
|
/*
|
|
* Module information.
|
|
*/
|
|
#define DRV_VERSION "2.0.14"
|
|
#define DRV_PROJECT "http://rt2x00.serialmonkey.com"
|
|
|
|
/*
|
|
* Debug definitions.
|
|
* Debug output has to be enabled during compile time.
|
|
*/
|
|
#define DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, __args...) \
|
|
printk(__kernlvl "%s -> %s: %s - " __msg, \
|
|
wiphy_name((__dev)->hw->wiphy), __FUNCTION__, __lvl, ##__args)
|
|
|
|
#define DEBUG_PRINTK_PROBE(__kernlvl, __lvl, __msg, __args...) \
|
|
printk(__kernlvl "%s -> %s: %s - " __msg, \
|
|
KBUILD_MODNAME, __FUNCTION__, __lvl, ##__args)
|
|
|
|
#ifdef CONFIG_RT2X00_DEBUG
|
|
#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
|
|
DEBUG_PRINTK_MSG(__dev, __kernlvl, __lvl, __msg, ##__args);
|
|
#else
|
|
#define DEBUG_PRINTK(__dev, __kernlvl, __lvl, __msg, __args...) \
|
|
do { } while (0)
|
|
#endif /* CONFIG_RT2X00_DEBUG */
|
|
|
|
/*
|
|
* Various debug levels.
|
|
* The debug levels PANIC and ERROR both indicate serious problems,
|
|
* for this reason they should never be ignored.
|
|
* The special ERROR_PROBE message is for messages that are generated
|
|
* when the rt2x00_dev is not yet initialized.
|
|
*/
|
|
#define PANIC(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK_MSG(__dev, KERN_CRIT, "Panic", __msg, ##__args)
|
|
#define ERROR(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK_MSG(__dev, KERN_ERR, "Error", __msg, ##__args)
|
|
#define ERROR_PROBE(__msg, __args...) \
|
|
DEBUG_PRINTK_PROBE(KERN_ERR, "Error", __msg, ##__args)
|
|
#define WARNING(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK(__dev, KERN_WARNING, "Warning", __msg, ##__args)
|
|
#define NOTICE(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK(__dev, KERN_NOTICE, "Notice", __msg, ##__args)
|
|
#define INFO(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK(__dev, KERN_INFO, "Info", __msg, ##__args)
|
|
#define DEBUG(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK(__dev, KERN_DEBUG, "Debug", __msg, ##__args)
|
|
#define EEPROM(__dev, __msg, __args...) \
|
|
DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
|
|
|
|
/*
|
|
* Ring sizes.
|
|
* Ralink PCI devices demand the Frame size to be a multiple of 128 bytes.
|
|
* DATA_FRAME_SIZE is used for TX, RX, ATIM and PRIO rings.
|
|
* MGMT_FRAME_SIZE is used for the BEACON ring.
|
|
*/
|
|
#define DATA_FRAME_SIZE 2432
|
|
#define MGMT_FRAME_SIZE 256
|
|
|
|
/*
|
|
* Number of entries in a packet ring.
|
|
* PCI devices only need 1 Beacon entry,
|
|
* but USB devices require a second because they
|
|
* have to send a Guardian byte first.
|
|
*/
|
|
#define RX_ENTRIES 12
|
|
#define TX_ENTRIES 12
|
|
#define ATIM_ENTRIES 1
|
|
#define BEACON_ENTRIES 2
|
|
|
|
/*
|
|
* Standard timing and size defines.
|
|
* These values should follow the ieee80211 specifications.
|
|
*/
|
|
#define ACK_SIZE 14
|
|
#define IEEE80211_HEADER 24
|
|
#define PLCP 48
|
|
#define BEACON 100
|
|
#define PREAMBLE 144
|
|
#define SHORT_PREAMBLE 72
|
|
#define SLOT_TIME 20
|
|
#define SHORT_SLOT_TIME 9
|
|
#define SIFS 10
|
|
#define PIFS ( SIFS + SLOT_TIME )
|
|
#define SHORT_PIFS ( SIFS + SHORT_SLOT_TIME )
|
|
#define DIFS ( PIFS + SLOT_TIME )
|
|
#define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
|
|
#define EIFS ( SIFS + (8 * (IEEE80211_HEADER + ACK_SIZE)) )
|
|
|
|
/*
|
|
* IEEE802.11 header defines
|
|
*/
|
|
static inline int is_rts_frame(u16 fc)
|
|
{
|
|
return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
|
|
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_RTS));
|
|
}
|
|
|
|
static inline int is_cts_frame(u16 fc)
|
|
{
|
|
return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_CTL) &&
|
|
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_CTS));
|
|
}
|
|
|
|
static inline int is_probe_resp(u16 fc)
|
|
{
|
|
return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
|
|
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_PROBE_RESP));
|
|
}
|
|
|
|
static inline int is_beacon(u16 fc)
|
|
{
|
|
return (((fc & IEEE80211_FCTL_FTYPE) == IEEE80211_FTYPE_MGMT) &&
|
|
((fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_BEACON));
|
|
}
|
|
|
|
/*
|
|
* Chipset identification
|
|
* The chipset on the device is composed of a RT and RF chip.
|
|
* The chipset combination is important for determining device capabilities.
|
|
*/
|
|
struct rt2x00_chip {
|
|
u16 rt;
|
|
#define RT2460 0x0101
|
|
#define RT2560 0x0201
|
|
#define RT2570 0x1201
|
|
#define RT2561s 0x0301 /* Turbo */
|
|
#define RT2561 0x0302
|
|
#define RT2661 0x0401
|
|
#define RT2571 0x1300
|
|
|
|
u16 rf;
|
|
u32 rev;
|
|
};
|
|
|
|
/*
|
|
* RF register values that belong to a particular channel.
|
|
*/
|
|
struct rf_channel {
|
|
int channel;
|
|
u32 rf1;
|
|
u32 rf2;
|
|
u32 rf3;
|
|
u32 rf4;
|
|
};
|
|
|
|
/*
|
|
* Antenna setup values.
|
|
*/
|
|
struct antenna_setup {
|
|
enum antenna rx;
|
|
enum antenna tx;
|
|
};
|
|
|
|
/*
|
|
* Quality statistics about the currently active link.
|
|
*/
|
|
struct link_qual {
|
|
/*
|
|
* Statistics required for Link tuning.
|
|
* For the average RSSI value we use the "Walking average" approach.
|
|
* When adding RSSI to the average value the following calculation
|
|
* is needed:
|
|
*
|
|
* avg_rssi = ((avg_rssi * 7) + rssi) / 8;
|
|
*
|
|
* The advantage of this approach is that we only need 1 variable
|
|
* to store the average in (No need for a count and a total).
|
|
* But more importantly, normal average values will over time
|
|
* move less and less towards newly added values this results
|
|
* that with link tuning, the device can have a very good RSSI
|
|
* for a few minutes but when the device is moved away from the AP
|
|
* the average will not decrease fast enough to compensate.
|
|
* The walking average compensates this and will move towards
|
|
* the new values correctly allowing a effective link tuning.
|
|
*/
|
|
int avg_rssi;
|
|
int false_cca;
|
|
|
|
/*
|
|
* Statistics required for Signal quality calculation.
|
|
* For calculating the Signal quality we have to determine
|
|
* the total number of success and failed RX and TX frames.
|
|
* After that we also use the average RSSI value to help
|
|
* determining the signal quality.
|
|
* For the calculation we will use the following algorithm:
|
|
*
|
|
* rssi_percentage = (avg_rssi * 100) / rssi_offset
|
|
* rx_percentage = (rx_success * 100) / rx_total
|
|
* tx_percentage = (tx_success * 100) / tx_total
|
|
* avg_signal = ((WEIGHT_RSSI * avg_rssi) +
|
|
* (WEIGHT_TX * tx_percentage) +
|
|
* (WEIGHT_RX * rx_percentage)) / 100
|
|
*
|
|
* This value should then be checked to not be greated then 100.
|
|
*/
|
|
int rx_percentage;
|
|
int rx_success;
|
|
int rx_failed;
|
|
int tx_percentage;
|
|
int tx_success;
|
|
int tx_failed;
|
|
#define WEIGHT_RSSI 20
|
|
#define WEIGHT_RX 40
|
|
#define WEIGHT_TX 40
|
|
};
|
|
|
|
/*
|
|
* Antenna settings about the currently active link.
|
|
*/
|
|
struct link_ant {
|
|
/*
|
|
* Antenna flags
|
|
*/
|
|
unsigned int flags;
|
|
#define ANTENNA_RX_DIVERSITY 0x00000001
|
|
#define ANTENNA_TX_DIVERSITY 0x00000002
|
|
#define ANTENNA_MODE_SAMPLE 0x00000004
|
|
|
|
/*
|
|
* Currently active TX/RX antenna setup.
|
|
* When software diversity is used, this will indicate
|
|
* which antenna is actually used at this time.
|
|
*/
|
|
struct antenna_setup active;
|
|
|
|
/*
|
|
* RSSI information for the different antenna's.
|
|
* These statistics are used to determine when
|
|
* to switch antenna when using software diversity.
|
|
*
|
|
* rssi[0] -> Antenna A RSSI
|
|
* rssi[1] -> Antenna B RSSI
|
|
*/
|
|
int rssi_history[2];
|
|
|
|
/*
|
|
* Current RSSI average of the currently active antenna.
|
|
* Similar to the avg_rssi in the link_qual structure
|
|
* this value is updated by using the walking average.
|
|
*/
|
|
int rssi_ant;
|
|
};
|
|
|
|
/*
|
|
* To optimize the quality of the link we need to store
|
|
* the quality of received frames and periodically
|
|
* optimize the link.
|
|
*/
|
|
struct link {
|
|
/*
|
|
* Link tuner counter
|
|
* The number of times the link has been tuned
|
|
* since the radio has been switched on.
|
|
*/
|
|
u32 count;
|
|
|
|
/*
|
|
* Quality measurement values.
|
|
*/
|
|
struct link_qual qual;
|
|
|
|
/*
|
|
* TX/RX antenna setup.
|
|
*/
|
|
struct link_ant ant;
|
|
|
|
/*
|
|
* Active VGC level
|
|
*/
|
|
int vgc_level;
|
|
|
|
/*
|
|
* Work structure for scheduling periodic link tuning.
|
|
*/
|
|
struct delayed_work work;
|
|
};
|
|
|
|
/*
|
|
* Small helper macro to work with moving/walking averages.
|
|
*/
|
|
#define MOVING_AVERAGE(__avg, __val, __samples) \
|
|
( (((__avg) * ((__samples) - 1)) + (__val)) / (__samples) )
|
|
|
|
/*
|
|
* When we lack RSSI information return something less then -80 to
|
|
* tell the driver to tune the device to maximum sensitivity.
|
|
*/
|
|
#define DEFAULT_RSSI ( -128 )
|
|
|
|
/*
|
|
* Link quality access functions.
|
|
*/
|
|
static inline int rt2x00_get_link_rssi(struct link *link)
|
|
{
|
|
if (link->qual.avg_rssi && link->qual.rx_success)
|
|
return link->qual.avg_rssi;
|
|
return DEFAULT_RSSI;
|
|
}
|
|
|
|
static inline int rt2x00_get_link_ant_rssi(struct link *link)
|
|
{
|
|
if (link->ant.rssi_ant && link->qual.rx_success)
|
|
return link->ant.rssi_ant;
|
|
return DEFAULT_RSSI;
|
|
}
|
|
|
|
static inline int rt2x00_get_link_ant_rssi_history(struct link *link,
|
|
enum antenna ant)
|
|
{
|
|
if (link->ant.rssi_history[ant - ANTENNA_A])
|
|
return link->ant.rssi_history[ant - ANTENNA_A];
|
|
return DEFAULT_RSSI;
|
|
}
|
|
|
|
static inline int rt2x00_update_ant_rssi(struct link *link, int rssi)
|
|
{
|
|
int old_rssi = link->ant.rssi_history[link->ant.active.rx - ANTENNA_A];
|
|
link->ant.rssi_history[link->ant.active.rx - ANTENNA_A] = rssi;
|
|
return old_rssi;
|
|
}
|
|
|
|
/*
|
|
* Interface structure
|
|
* Configuration details about the current interface.
|
|
*/
|
|
struct interface {
|
|
/*
|
|
* Interface identification. The value is assigned
|
|
* to us by the 80211 stack, and is used to request
|
|
* new beacons.
|
|
*/
|
|
struct ieee80211_vif *id;
|
|
|
|
/*
|
|
* Current working type (IEEE80211_IF_TYPE_*).
|
|
*/
|
|
int type;
|
|
|
|
/*
|
|
* MAC of the device.
|
|
*/
|
|
u8 mac[ETH_ALEN];
|
|
|
|
/*
|
|
* BBSID of the AP to associate with.
|
|
*/
|
|
u8 bssid[ETH_ALEN];
|
|
};
|
|
|
|
static inline int is_interface_present(struct interface *intf)
|
|
{
|
|
return !!intf->id;
|
|
}
|
|
|
|
static inline int is_interface_type(struct interface *intf, int type)
|
|
{
|
|
return intf->type == type;
|
|
}
|
|
|
|
/*
|
|
* Details about the supported modes, rates and channels
|
|
* of a particular chipset. This is used by rt2x00lib
|
|
* to build the ieee80211_hw_mode array for mac80211.
|
|
*/
|
|
struct hw_mode_spec {
|
|
/*
|
|
* Number of modes, rates and channels.
|
|
*/
|
|
int num_modes;
|
|
int num_rates;
|
|
int num_channels;
|
|
|
|
/*
|
|
* txpower values.
|
|
*/
|
|
const u8 *tx_power_a;
|
|
const u8 *tx_power_bg;
|
|
u8 tx_power_default;
|
|
|
|
/*
|
|
* Device/chipset specific value.
|
|
*/
|
|
const struct rf_channel *channels;
|
|
};
|
|
|
|
/*
|
|
* Configuration structure wrapper around the
|
|
* mac80211 configuration structure.
|
|
* When mac80211 configures the driver, rt2x00lib
|
|
* can precalculate values which are equal for all
|
|
* rt2x00 drivers. Those values can be stored in here.
|
|
*/
|
|
struct rt2x00lib_conf {
|
|
struct ieee80211_conf *conf;
|
|
struct rf_channel rf;
|
|
|
|
struct antenna_setup ant;
|
|
|
|
int phymode;
|
|
|
|
int basic_rates;
|
|
int slot_time;
|
|
|
|
short sifs;
|
|
short pifs;
|
|
short difs;
|
|
short eifs;
|
|
};
|
|
|
|
/*
|
|
* rt2x00lib callback functions.
|
|
*/
|
|
struct rt2x00lib_ops {
|
|
/*
|
|
* Interrupt handlers.
|
|
*/
|
|
irq_handler_t irq_handler;
|
|
|
|
/*
|
|
* Device init handlers.
|
|
*/
|
|
int (*probe_hw) (struct rt2x00_dev *rt2x00dev);
|
|
char *(*get_firmware_name) (struct rt2x00_dev *rt2x00dev);
|
|
int (*load_firmware) (struct rt2x00_dev *rt2x00dev, void *data,
|
|
const size_t len);
|
|
|
|
/*
|
|
* Device initialization/deinitialization handlers.
|
|
*/
|
|
int (*initialize) (struct rt2x00_dev *rt2x00dev);
|
|
void (*uninitialize) (struct rt2x00_dev *rt2x00dev);
|
|
|
|
/*
|
|
* Ring initialization handlers
|
|
*/
|
|
void (*init_rxentry) (struct rt2x00_dev *rt2x00dev,
|
|
struct data_entry *entry);
|
|
void (*init_txentry) (struct rt2x00_dev *rt2x00dev,
|
|
struct data_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 txdata_entry_desc *desc,
|
|
struct ieee80211_tx_control *control);
|
|
int (*write_tx_data) (struct rt2x00_dev *rt2x00dev,
|
|
struct data_ring *ring, struct sk_buff *skb,
|
|
struct ieee80211_tx_control *control);
|
|
int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
|
|
struct sk_buff *skb);
|
|
void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
|
|
unsigned int queue);
|
|
|
|
/*
|
|
* RX control handlers
|
|
*/
|
|
void (*fill_rxdone) (struct data_entry *entry,
|
|
struct rxdata_entry_desc *desc);
|
|
|
|
/*
|
|
* Configuration handlers.
|
|
*/
|
|
void (*config_mac_addr) (struct rt2x00_dev *rt2x00dev, __le32 *mac);
|
|
void (*config_bssid) (struct rt2x00_dev *rt2x00dev, __le32 *bssid);
|
|
void (*config_type) (struct rt2x00_dev *rt2x00dev, const int type,
|
|
const int tsf_sync);
|
|
void (*config_preamble) (struct rt2x00_dev *rt2x00dev,
|
|
const int short_preamble,
|
|
const int ack_timeout,
|
|
const int ack_consume_time);
|
|
void (*config) (struct rt2x00_dev *rt2x00dev, const unsigned int flags,
|
|
struct rt2x00lib_conf *libconf);
|
|
#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 rxd_size;
|
|
const unsigned int txd_size;
|
|
const unsigned int eeprom_size;
|
|
const unsigned int rf_size;
|
|
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,
|
|
|
|
/*
|
|
* Driver features
|
|
*/
|
|
DRIVER_REQUIRE_FIRMWARE,
|
|
DRIVER_REQUIRE_BEACON_RING,
|
|
|
|
/*
|
|
* Driver configuration
|
|
*/
|
|
CONFIG_SUPPORT_HW_BUTTON,
|
|
CONFIG_FRAME_TYPE,
|
|
CONFIG_RF_SEQUENCE,
|
|
CONFIG_EXTERNAL_LNA_A,
|
|
CONFIG_EXTERNAL_LNA_BG,
|
|
CONFIG_DOUBLE_ANTENNA,
|
|
CONFIG_DISABLE_LINK_TUNING,
|
|
CONFIG_SHORT_PREAMBLE,
|
|
};
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
void *dev;
|
|
#define rt2x00dev_pci(__dev) ( (struct pci_dev*)(__dev)->dev )
|
|
#define rt2x00dev_usb(__dev) ( (struct usb_interface*)(__dev)->dev )
|
|
|
|
/*
|
|
* Callback functions.
|
|
*/
|
|
const struct rt2x00_ops *ops;
|
|
|
|
/*
|
|
* IEEE80211 control structure.
|
|
*/
|
|
struct ieee80211_hw *hw;
|
|
struct ieee80211_hw_mode *hwmodes;
|
|
unsigned int curr_hwmode;
|
|
#define HWMODE_B 0
|
|
#define HWMODE_G 1
|
|
#define HWMODE_A 2
|
|
|
|
/*
|
|
* rfkill structure for RF state switching support.
|
|
* This will only be compiled in when required.
|
|
*/
|
|
#ifdef CONFIG_RT2X00_LIB_RFKILL
|
|
struct rfkill *rfkill;
|
|
struct input_polled_dev *poll_dev;
|
|
#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 */
|
|
|
|
/*
|
|
* 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_addr: Base register address. (PCI)
|
|
* csr_cache: CSR cache for usb_control_msg. (USB)
|
|
*/
|
|
void __iomem *csr_addr;
|
|
void *csr_cache;
|
|
|
|
/*
|
|
* 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 configuration.
|
|
*/
|
|
struct interface interface;
|
|
|
|
/*
|
|
* 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;
|
|
|
|
/*
|
|
* USB Max frame size (for rt2500usb & rt73usb).
|
|
*/
|
|
u16 usb_maxpacket;
|
|
|
|
/*
|
|
* Current TX power value.
|
|
*/
|
|
u16 tx_power;
|
|
|
|
/*
|
|
* LED register (for rt61pci & rt73usb).
|
|
*/
|
|
u16 led_reg;
|
|
|
|
/*
|
|
* Led mode (LED_MODE_*)
|
|
*/
|
|
u8 led_mode;
|
|
|
|
/*
|
|
* 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.
|
|
*/
|
|
struct work_struct beacon_work;
|
|
struct work_struct filter_work;
|
|
struct work_struct config_work;
|
|
|
|
/*
|
|
* Data ring arrays for RX, TX and Beacon.
|
|
* The Beacon array also contains the Atim ring
|
|
* if that is supported by the device.
|
|
*/
|
|
int data_rings;
|
|
struct data_ring *rx;
|
|
struct data_ring *tx;
|
|
struct data_ring *bcn;
|
|
|
|
/*
|
|
* Firmware image.
|
|
*/
|
|
const struct firmware *fw;
|
|
};
|
|
|
|
/*
|
|
* For-each loop for the ring array.
|
|
* All rings have been allocated as a single array,
|
|
* this means we can create a very simply loop macro
|
|
* that is capable of looping through all rings.
|
|
* ring_end(), txring_end() and ring_loop() are helper macro's which
|
|
* should not be used directly. Instead the following should be used:
|
|
* ring_for_each() - Loops through all rings (RX, TX, Beacon & Atim)
|
|
* txring_for_each() - Loops through TX data rings (TX only)
|
|
* txringall_for_each() - Loops through all TX rings (TX, Beacon & Atim)
|
|
*/
|
|
#define ring_end(__dev) \
|
|
&(__dev)->rx[(__dev)->data_rings]
|
|
|
|
#define txring_end(__dev) \
|
|
&(__dev)->tx[(__dev)->hw->queues]
|
|
|
|
#define ring_loop(__entry, __start, __end) \
|
|
for ((__entry) = (__start); \
|
|
prefetch(&(__entry)[1]), (__entry) != (__end); \
|
|
(__entry) = &(__entry)[1])
|
|
|
|
#define ring_for_each(__dev, __entry) \
|
|
ring_loop(__entry, (__dev)->rx, ring_end(__dev))
|
|
|
|
#define txring_for_each(__dev, __entry) \
|
|
ring_loop(__entry, (__dev)->tx, txring_end(__dev))
|
|
|
|
#define txringall_for_each(__dev, __entry) \
|
|
ring_loop(__entry, (__dev)->tx, ring_end(__dev))
|
|
|
|
/*
|
|
* 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);
|
|
}
|
|
|
|
/*
|
|
* Library functions.
|
|
*/
|
|
struct data_ring *rt2x00lib_get_ring(struct rt2x00_dev *rt2x00dev,
|
|
const unsigned int queue);
|
|
|
|
/*
|
|
* Interrupt context handlers.
|
|
*/
|
|
void rt2x00lib_beacondone(struct rt2x00_dev *rt2x00dev);
|
|
void rt2x00lib_txdone(struct data_entry *entry,
|
|
const int status, const int retry);
|
|
void rt2x00lib_rxdone(struct data_entry *entry, struct sk_buff *skb,
|
|
struct rxdata_entry_desc *desc);
|
|
|
|
/*
|
|
* TX descriptor initializer
|
|
*/
|
|
void rt2x00lib_write_tx_desc(struct rt2x00_dev *rt2x00dev,
|
|
struct sk_buff *skb,
|
|
struct ieee80211_tx_control *control);
|
|
|
|
/*
|
|
* mac80211 handlers.
|
|
*/
|
|
int rt2x00mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
|
|
struct ieee80211_tx_control *control);
|
|
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);
|
|
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, int 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 */
|