#define RT2X00_H
#include <linux/bitops.h>
+#include <linux/prefetch.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <net/mac80211.h>
-#include "rt2x00lib.h"
-#include "rt2x00debug.h"
-
/*
* Module information.
+ * DRV_NAME should be set within the individual module source files.
*/
-#ifndef DRV_NAME
-#define DRV_NAME "rt2x00"
-#endif /* DRV_NAME */
-#define DRV_VERSION "2.0.1"
+#define DRV_VERSION "2.0.2"
#define DRV_PROJECT "http://rt2x00.serialmonkey.com"
/*
/*
* Interval defines
*/
-#define LINK_TUNE_INTERVAL ( 1 * HZ )
+#define LINK_TUNE_INTERVAL ( round_jiffies(HZ) )
#define RFKILL_POLL_INTERVAL ( HZ / 4 )
/*
#define ENTRY_TXD_MORE_FRAG 5
#define ENTRY_TXD_REQ_TIMESTAMP 6
#define ENTRY_TXD_REQ_ACK 7
-#define ENTRY_TXD_NEW_SEQ 8
/*
* Ring we belong to.
*/
u32 count;
- /*
- * RSSI statistics.
- */
- u32 count_rssi;
- u32 total_rssi;
-
/*
* Misc statistics.
+ * 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 means 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.
*/
- u32 curr_noise;
- u32 false_cca;
+ int avg_rssi;
+ int false_cca;
/*
* Work structure for scheduling periodic link tuning.
return !!intf->monitor_count;
}
+/*
+ * 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 u32 *chan_val_a;
+ const u32 *chan_val_bg;
+};
+
/*
* rt2x00lib callback functions.
*/
int (*set_device_state)(struct rt2x00_dev *rt2x00dev,
enum dev_state state);
int (*rfkill_poll)(struct rt2x00_dev *rt2x00dev);
- void (*link_tuner)(struct rt2x00_dev *rt2x00dev, int rssi);
+ void (*link_tuner)(struct rt2x00_dev *rt2x00dev);
/*
* TX control handlers
struct ieee80211_tx_control *control);
void (*kick_tx_queue)(struct rt2x00_dev *rt2x00dev, int queue);
+ /*
+ * RX control handlers
+ */
+ int (*fill_rxdone)(struct data_entry *entry,
+ int *signal, int *rssi, int *ofdm);
+
/*
* Configuration handlers.
*/
void (*config_type)(struct rt2x00_dev *rt2x00dev, const int type);
void (*config_phymode)(struct rt2x00_dev *rt2x00dev, const int phy);
void (*config_channel)(struct rt2x00_dev *rt2x00dev, const int value,
- const int channel, const int txpower);
+ const int channel, const int txpower);
void (*config_mac_addr)(struct rt2x00_dev *rt2x00dev, u8 *mac);
void (*config_bssid)(struct rt2x00_dev *rt2x00dev, u8 *bssid);
void (*config_promisc)(struct rt2x00_dev *rt2x00dev, const int promisc);
* macro's should be used for correct typecasting.
*/
void *dev;
- struct device *device;
#define rt2x00dev_pci(__dev) ( (struct pci_dev*)(__dev)->dev )
#define rt2x00dev_usb(__dev) ( (struct usb_interface*)(__dev)->dev )
* If enabled, the debugfs interface structures
* required for deregistration of debugfs.
*/
+#ifdef CONFIG_RT2X00_LIB_DEBUGFS
const struct rt2x00debug_intf *debugfs_intf;
-
- /*
- * Queue for deferred work.
- */
- struct workqueue_struct *workqueue;
+#endif /* CONFIG_RT2X00_LIB_DEBUGFS */
/*
* Interface configuration.
u8 led_mode;
/*
- * EEPROM bus width (PCI devices only).
+ * Rssi <-> Dbm offset
*/
- u8 eeprom_width;
+ u8 rssi_offset;
/*
* Frequency offset (for rt61pci & rt73usb).
* The 1 + Atim check will assure that the address directly after
* the ring array is obtained and the for-each loop exits correctly.
*/
-#define ring_for_each(__dev, __entry) \
- for ((__entry) = (__dev)->rx; \
- (__entry) != &(__dev)->bcn[1 + \
- test_bit(DEVICE_SUPPORT_ATIM, &rt2x00dev->flags)]; \
- (__entry)++)
+#define ring_end(__dev) \
+ &(__dev)->bcn[1 + test_bit(DEVICE_SUPPORT_ATIM, &rt2x00dev->flags)]
+
+#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, (__dev)->bcn)
-#define txring_for_each(__dev, __entry) \
- for ((__entry) = (__dev)->tx; (__entry) != (__dev)->bcn; (__entry)++)
+#define txringall_for_each(__dev, __entry) \
+ ring_loop(__entry, (__dev)->tx, ring_end(__dev))
/*
* EEPROM access.
static inline void rt2x00_start_link_tune(struct rt2x00_dev *rt2x00dev)
{
rt2x00dev->link.count = 0;
- rt2x00dev->link.count_rssi = 0;
- rt2x00dev->link.total_rssi = 0;
- rt2x00dev->link.curr_noise = 0;
+ rt2x00dev->link.avg_rssi = 0;
+ rt2x00dev->link.false_cca = 0;
- queue_delayed_work(rt2x00dev->workqueue,
+ queue_delayed_work(rt2x00dev->hw->workqueue,
&rt2x00dev->link.work, LINK_TUNE_INTERVAL);
}
{
if (work_pending(&rt2x00dev->link.work.work))
cancel_rearming_delayed_workqueue(
- rt2x00dev->workqueue, &rt2x00dev->link.work);
+ rt2x00dev->hw->workqueue, &rt2x00dev->link.work);
}
-static inline void rt2x00_update_link_rssi(struct link *link, u32 rssi)
+static inline void rt2x00_update_link_rssi(struct link *link, int rssi)
{
- link->count_rssi++;
- link->total_rssi += rssi;
+ if (!link->avg_rssi)
+ link->avg_rssi = rssi;
+ else
+ link->avg_rssi = ((link->avg_rssi * 7) + rssi) / 8;
}
-static inline u32 rt2x00_get_link_rssi(struct link *link)
+static inline int rt2x00_get_link_rssi(struct link *link)
{
- u32 average = 0;
-
- if (link->count_rssi && link->total_rssi)
- average = link->total_rssi / link->count_rssi;
-
- link->count_rssi = 0;
- link->total_rssi = 0;
-
- return average;
+ return link->avg_rssi;
}
/*
projects / openwrt.git / blobdiff