/*
- Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
+ Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
<http://rt2x00.serialmonkey.com>
This program is free software; you can redistribute it and/or modify
#include <linux/leds.h>
#include <linux/mutex.h>
#include <linux/etherdevice.h>
+#include <linux/input-polldev.h>
#include <net/mac80211.h>
/*
* Module information.
*/
-#define DRV_VERSION "2.1.8"
+#define DRV_VERSION "2.3.0"
#define DRV_PROJECT "http://rt2x00.serialmonkey.com"
/*
DEBUG_PRINTK(__dev, KERN_DEBUG, "EEPROM recovery", __msg, ##__args)
/*
+ * 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.
+ */
+#define GET_DURATION(__size, __rate) (((__size) * 8 * 10) / (__rate))
+#define GET_DURATION_RES(__size, __rate)(((__size) * 8 * 10) % (__rate))
+
+/*
* Standard timing and size defines.
* These values should follow the ieee80211 specifications.
*/
#define DIFS ( PIFS + SLOT_TIME )
#define SHORT_DIFS ( SHORT_PIFS + SHORT_SLOT_TIME )
#define EIFS ( SIFS + DIFS + \
- (8 * (IEEE80211_HEADER + ACK_SIZE)) )
+ GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
#define SHORT_EIFS ( SIFS + SHORT_DIFS + \
- (8 * (IEEE80211_HEADER + ACK_SIZE)) )
+ GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
/*
* Chipset identification
*/
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.
+ * Statistics required for Link tuning by driver
+ * The rssi value is provided by rt2x00lib during the
+ * link_tuner() callback function.
+ * The false_cca field is filled during the link_stats()
+ * callback function and could be used during the
+ * link_tuner() callback function.
*/
- int avg_rssi;
+ int 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
+ * VGC levels
+ * Hardware driver will tune the VGC level during each call
+ * to the link_tuner() callback function. This vgc_level is
+ * is determined based on the link quality statistics like
+ * average RSSI and the false CCA count.
*
- * This value should then be checked to not be greated then 100.
+ * In some cases the drivers need to differentiate between
+ * the currently "desired" VGC level and the level configured
+ * in the hardware. The latter is important to reduce the
+ * number of BBP register reads to reduce register access
+ * overhead. For this reason we store both values here.
+ */
+ u8 vgc_level;
+ u8 vgc_level_reg;
+
+ /*
+ * Statistics required for Signal quality calculation.
+ * These fields might be changed during the link_stats()
+ * callback function.
*/
- 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
};
/*
struct link_ant ant;
/*
- * Active VGC level
+ * Currently active average RSSI value
*/
- int vgc_level;
+ int avg_rssi;
+
+ /*
+ * Currently precalculated percentages of successful
+ * TX and RX frames.
+ */
+ int rx_percentage;
+ int tx_percentage;
/*
* Work structure for scheduling periodic link tuning.
};
/*
- * 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 void rt2x00_reset_link_ant_rssi(struct link *link)
-{
- link->ant.rssi_ant = 0;
-}
-
-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
* Per interface configuration details, this structure
* is allocated as the private data for ieee80211_vif.
spinlock_t lock;
/*
- * BSS configuration. Copied from the structure
- * passed to us through the bss_info_changed()
- * callback funtion.
- */
- struct ieee80211_bss_conf conf;
-
- /*
* MAC of the device.
*/
u8 mac[ETH_ALEN];
struct rf_channel rf;
struct channel_info channel;
-
- struct antenna_setup ant;
-
- enum ieee80211_band band;
-
- u32 basic_rates;
- u32 slot_time;
-
- short sifs;
- short pifs;
- short difs;
- short eifs;
};
/*
int ack_timeout;
int ack_consume_time;
+
+ u64 basic_rates;
+
+ int slot_time;
+
+ short sifs;
+ short pifs;
+ short difs;
+ short eifs;
};
/*
/*
* Interface type
*/
- enum ieee80211_if_types type;
+ enum nl80211_iftype type;
/*
* TSF sync value, this is dependant on the operation type.
/*
* queue initialization handlers
*/
- void (*init_rxentry) (struct rt2x00_dev *rt2x00dev,
- struct queue_entry *entry);
- void (*init_txentry) (struct rt2x00_dev *rt2x00dev,
- struct queue_entry *entry);
+ bool (*get_entry_state) (struct queue_entry *entry);
+ void (*clear_entry) (struct queue_entry *entry);
/*
* Radio control handlers.
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);
+ void (*reset_tuner) (struct rt2x00_dev *rt2x00dev,
+ struct link_qual *qual);
+ void (*link_tuner) (struct rt2x00_dev *rt2x00dev,
+ struct link_qual *qual, const u32 count);
/*
* TX control handlers
struct txentry_desc *txdesc);
int (*write_tx_data) (struct queue_entry *entry);
void (*write_beacon) (struct queue_entry *entry);
- int (*get_tx_data_len) (struct rt2x00_dev *rt2x00dev,
- struct sk_buff *skb);
+ int (*get_tx_data_len) (struct queue_entry *entry);
void (*kick_tx_queue) (struct rt2x00_dev *rt2x00dev,
const enum data_queue_qid queue);
void (*config_erp) (struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_erp *erp);
+ void (*config_ant) (struct rt2x00_dev *rt2x00dev,
+ struct antenna_setup *ant);
void (*config) (struct rt2x00_dev *rt2x00dev,
struct rt2x00lib_conf *libconf,
- const unsigned int flags);
-#define CONFIG_UPDATE_PHYMODE ( 1 << 1 )
-#define CONFIG_UPDATE_CHANNEL ( 1 << 2 )
-#define CONFIG_UPDATE_TXPOWER ( 1 << 3 )
-#define CONFIG_UPDATE_ANTENNA ( 1 << 4 )
-#define CONFIG_UPDATE_SLOT_TIME ( 1 << 5 )
-#define CONFIG_UPDATE_BEACON_INT ( 1 << 6 )
-#define CONFIG_UPDATE_ALL 0xffff
+ const unsigned int changed_flags);
};
/*
/*
* Device state flags
*/
- DEVICE_PRESENT,
- DEVICE_REGISTERED_HW,
- DEVICE_INITIALIZED,
- DEVICE_STARTED,
- DEVICE_STARTED_SUSPEND,
- DEVICE_ENABLED_RADIO,
- DEVICE_DISABLED_RADIO_HW,
- DEVICE_DIRTY_CONFIG,
+ DEVICE_STATE_PRESENT,
+ DEVICE_STATE_REGISTERED_HW,
+ DEVICE_STATE_INITIALIZED,
+ DEVICE_STATE_STARTED,
+ DEVICE_STATE_STARTED_SUSPEND,
+ DEVICE_STATE_ENABLED_RADIO,
+ DEVICE_STATE_DISABLED_RADIO_HW,
/*
* Driver requirements
DRIVER_REQUIRE_ATIM_QUEUE,
DRIVER_REQUIRE_SCHEDULED,
DRIVER_REQUIRE_DMA,
+ DRIVER_REQUIRE_COPY_IV,
/*
* Driver features
unsigned long rfkill_state;
#define RFKILL_STATE_ALLOCATED 1
#define RFKILL_STATE_REGISTERED 2
- struct rfkill *rfkill;
- struct delayed_work rfkill_work;
+#define RFKILL_STATE_BLOCKED 3
+ struct input_polled_dev *rfkill_poll_dev;
#endif /* CONFIG_RT2X00_LIB_RFKILL */
/*
/*
* 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.
+ * by the device's EEPROM.
*/
struct antenna_setup default_ant;
} csr;
/*
- * Mutex to protect register accesses on USB devices.
- * There are 2 reasons this is needed, one is to ensure
- * use of the csr_cache (for USB devices) by one thread
- * isn't corrupted by another thread trying to access it.
- * The other is that access to BBP and RF registers
- * require multiple BUS transactions and if another thread
- * attempted to access one of those registers at the same
- * time one of the writes could silently fail.
+ * 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 usb_cache_mutex;
+ struct mutex csr_mutex;
/*
* Current packet filter configuration for the device.
u32 *rf;
/*
- * USB Max frame size (for rt2500usb & rt73usb).
+ * LNA gain
*/
- u16 usb_maxpacket;
+ 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;
!!(chipset->rev & 0x0000f));
}
-/*
- * Duration calculations
- * The rate variable passed is: 100kbs.
- * To convert from bytes to bits we multiply size with 8,
- * then the size is multiplied with 10 to make the
- * real rate -> rate argument correction.
- */
-static inline u16 get_duration(const unsigned int size, const u8 rate)
-{
- return ((size * 8 * 10) / rate);
-}
-
-static inline u16 get_duration_res(const unsigned int size, const u8 rate)
-{
- return ((size * 8 * 10) % rate);
-}
-
/**
* rt2x00queue_map_txskb - Map a skb into DMA for TX purposes.
* @rt2x00dev: Pointer to &struct rt2x00_dev.
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(struct ieee80211_hw *hw, u32 changed);
int rt2x00mac_config_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_if_conf *conf);
int mc_count, struct dev_addr_list *mc_list);
#ifdef CONFIG_RT2X00_LIB_CRYPTO
int rt2x00mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
- const u8 *local_address, const u8 *address,
+ struct ieee80211_vif *vif, struct ieee80211_sta *sta,
struct ieee80211_key_conf *key);
#else
#define rt2x00mac_set_key NULL
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff