path: root/drivers/net/wireless/rtlwifi/base.c

/******************************************************************************
 *
 * Copyright(c) 2009-2010  Realtek Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * 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.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <wlanfae@realtek.com>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 *****************************************************************************/

#include <linux/ip.h>
#include "wifi.h"
#include "rc.h"
#include "base.h"
#include "efuse.h"
#include "cam.h"
#include "ps.h"
#include "regd.h"

/*
 *NOTICE!!!: This file will be very big, we hsould
 *keep it clear under follwing roles:
 *
 *This file include follwing part, so, if you add new
 *functions into this file, please check which part it
 *should includes. or check if you should add new part
 *for this file:
 *
 *1) mac80211 init functions
 *2) tx information functions
 *3) functions called by core.c
 *4) wq & timer callback functions
 *5) frame process functions
 *6) sysfs functions
 *7) ...
 */

/*********************************************************
 *
 * mac80211 init functions
 *
 *********************************************************/
static struct ieee80211_channel rtl_channeltable[] = {
	{.center_freq = 2412, .hw_value = 1,},
	{.center_freq = 2417, .hw_value = 2,},
	{.center_freq = 2422, .hw_value = 3,},
	{.center_freq = 2427, .hw_value = 4,},
	{.center_freq = 2432, .hw_value = 5,},
	{.center_freq = 2437, .hw_value = 6,},
	{.center_freq = 2442, .hw_value = 7,},
	{.center_freq = 2447, .hw_value = 8,},
	{.center_freq = 2452, .hw_value = 9,},
	{.center_freq = 2457, .hw_value = 10,},
	{.center_freq = 2462, .hw_value = 11,},
	{.center_freq = 2467, .hw_value = 12,},
	{.center_freq = 2472, .hw_value = 13,},
	{.center_freq = 2484, .hw_value = 14,},
};

static struct ieee80211_rate rtl_ratetable[] = {
	{.bitrate = 10, .hw_value = 0x00,},
	{.bitrate = 20, .hw_value = 0x01,},
	{.bitrate = 55, .hw_value = 0x02,},
	{.bitrate = 110, .hw_value = 0x03,},
	{.bitrate = 60, .hw_value = 0x04,},
	{.bitrate = 90, .hw_value = 0x05,},
	{.bitrate = 120, .hw_value = 0x06,},
	{.bitrate = 180, .hw_value = 0x07,},
	{.bitrate = 240, .hw_value = 0x08,},
	{.bitrate = 360, .hw_value = 0x09,},
	{.bitrate = 480, .hw_value = 0x0a,},
	{.bitrate = 540, .hw_value = 0x0b,},
};

static const struct ieee80211_supported_band rtl_band_2ghz = {
	.band = IEEE80211_BAND_2GHZ,

	.channels = rtl_channeltable,
	.n_channels = ARRAY_SIZE(rtl_channeltable),

	.bitrates = rtl_ratetable,
	.n_bitrates = ARRAY_SIZE(rtl_ratetable),

	.ht_cap = {0},
};

static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
				  struct ieee80211_sta_ht_cap *ht_cap)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);

	ht_cap->ht_supported = true;
	ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
	    IEEE80211_HT_CAP_SGI_40 |
	    IEEE80211_HT_CAP_SGI_20 |
	    IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;

	/*
	 *Maximum length of AMPDU that the STA can receive.
	 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
	 */
	ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;

	/*Minimum MPDU start spacing , */
	ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;

	ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;

	/*
	 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
	 *base on ant_num
	 *rx_mask: RX mask
	 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
	 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
	 *if rx_ant >=3 rx_mask[2]=0xff;
	 *if BW_40 rx_mask[4]=0x01;
	 *highest supported RX rate
	 */
	if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {

		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));

		ht_cap->mcs.rx_mask[0] = 0xFF;
		ht_cap->mcs.rx_mask[1] = 0xFF;
		ht_cap->mcs.rx_mask[4] = 0x01;

		ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
	} else if (get_rf_type(rtlphy) == RF_1T1R) {

		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, (