path: root/drivers/net/wireless/rt2x00/rt2x00.h

/*
	Copyright (C) 2010 Willow Garage <http://www.willowgarage.com>
	Copyright (C) 2004 - 2010 Ivo van Doorn <IvDoorn@gmail.com>
	Copyright (C) 2004 - 2009 Gertjan van Wingerde <gwingerde@gmail.com>
	<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/interrupt.h>
#include <linux/skbuff.h>
#include <linux/workqueue.h>
#include <linux/firmware.h>
#include <linux/leds.h>
#include <linux/mutex.h>
#include <linux/etherdevice.h>
#include <linux/input-polldev.h>
#include <linux/kfifo.h>
#include <linux/hrtimer.h>

#include <net/mac80211.h>

#include "rt2x00debug.h"
#include "rt2x00dump.h"
#include "rt2x00leds.h"
#include "rt2x00reg.h"
#include "rt2x00queue.h"

/*
 * Module information.
 */
#define DRV_VERSION	"2.3.0"
#define DRV_PROJECT	"http://rt2x00.serialmonkey.com"

/* Debug definitions.
 * Debug output has to be enabled during compile time.
 */
#ifdef CONFIG_RT2X00_DEBUG
#define DEBUG
#endif /* CONFIG_RT2X00_DEBUG */

/* Utility printing macros
 * rt2x00_probe_err is for messages when rt2x00_dev is uninitialized
 */
#define rt2x00_probe_err(fmt, ...)					\
	printk(KERN_ERR KBUILD_MODNAME ": %s: Error - " fmt,		\
	       __func__, ##__VA_ARGS__)
#define rt2x00_err(dev, fmt, ...)					\
	wiphy_err((dev)->hw->wiphy, "%s: Error - " fmt,			\
		  __func__, ##__VA_ARGS__)
#define rt2x00_warn(dev, fmt, ...)					\
	wiphy_warn((dev)->hw->wiphy, "%s: Warning - " fmt,		\
		   __func__, ##__VA_ARGS__)
#define rt2x00_info(dev, fmt, ...)					\
	wiphy_info((dev)->hw->wiphy, "%s: Info - " fmt,			\
		   __func__, ##__VA_ARGS__)

/* Various debug levels */
#define rt2x00_dbg(dev, fmt, ...)					\
	wiphy_dbg((dev)->hw->wiphy, "%s: Debug - " fmt,			\
		  __func__, ##__VA_ARGS__)
#define rt2x00_eeprom_dbg(dev, fmt, ...)				\
	wiphy_dbg((dev)->hw->wiphy, "%s: EEPROM recovery - " fmt,	\
		  __func__, ##__VA_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))

/*
 * Determine the number of L2 padding bytes required between the header and
 * the payload.
 */
#define L2PAD_SIZE(__hdrlen)	(-(__hdrlen) & 3)

/*
 * Determine the alignment requirement,
 * to make sure the 802.11 payload is padded to a 4-byte boundrary
 * we must determine the address of the payload and calculate the
 * amount of bytes needed to move the data.
 */
#define ALIGN_SIZE(__skb, __header) \
	(  ((unsigned long)((__skb)->data + (__header))) & 3 )

/*
 * Constants for extra TX headroom for alignment purposes.
 */
#define RT2X00_ALIGN_SIZE	4 /* Only whole frame needs alignment */
#define RT2X00_L2PAD_SIZE	8 /* Both header & payload need alignment */

/*
 * 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 + DIFS + \
				  GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )
#define SHORT_EIFS		( SIFS + SHORT_DIFS + \
				  GET_DURATION(IEEE80211_HEADER + ACK_SIZE, 10) )

/*
 * Structure for average calculation
 * The avg field contain