path: root/drivers/net/wireless/rtlwifi/rtl8192cu/mac.c

/******************************************************************************
 *
 * Copyright(c) 2009-2010  Realtek Corporation. All rights reserved.
 *
 * 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>
 *
****************************************************************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>

#include "../wifi.h"
#include "../pci.h"
#include "../usb.h"
#include "../ps.h"
#include "../cam.h"
#include "reg.h"
#include "def.h"
#include "phy.h"
#include "rf.h"
#include "dm.h"
#include "mac.h"
#include "trx.h"

/* macro to shorten lines */

#define LINK_Q	ui_link_quality
#define RX_EVM	rx_evm_percentage
#define RX_SIGQ	rx_mimo_signalquality


void rtl92c_read_chip_version(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
	enum version_8192c chip_version = VERSION_UNKNOWN;
	u32 value32;

	value32 = rtl_read_dword(rtlpriv, REG_SYS_CFG);
	if (value32 & TRP_VAUX_EN) {
		chip_version = (value32 & TYPE_ID) ? VERSION_TEST_CHIP_92C :
			       VERSION_TEST_CHIP_88C;
	} else {
		/* Normal mass production chip. */
		chip_version = NORMAL_CHIP;
		chip_version |= ((value32 & TYPE_ID) ? CHIP_92C : 0);
		chip_version |= ((value32 & VENDOR_ID) ? CHIP_VENDOR_UMC : 0);
		/* RTL8723 with BT function. */
		chip_version |= ((value32 & BT_FUNC) ? CHIP_8723 : 0);
		if (IS_VENDOR_UMC(chip_version))
			chip_version |= ((value32 & CHIP_VER_RTL_MASK) ?
					 CHIP_VENDOR_UMC_B_CUT : 0);
		if (IS_92C_SERIAL(chip_version)) {
			value32 = rtl_read_dword(rtlpriv, REG_HPON_FSM);
			chip_version |= ((CHIP_BONDING_IDENTIFIER(value32) ==
				 CHIP_BONDING_92C_1T2R) ? CHIP_92C_1T2R : 0);
		} else if (IS_8723_SERIES(chip_version)) {
			value32 = rtl_read_dword(rtlpriv, REG_GPIO_OUTSTS);
			chip_version |= ((value32 & RF_RL_ID) ?
					  CHIP_8723_DRV_REV : 0);
		}
	}
	rtlhal->version  = (enum version_8192c)chip_version;
	pr_info("rtl8192cu: Chip version 0x%x\n", chip_version);
	switch (rtlhal->version) {
	case VERSION_NORMAL_TSMC_CHIP_92C_1T2R:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
		 ("Chip Version ID: VERSION_B_CHIP_92C.\n"));
		break;
	case VERSION_NORMAL_TSMC_CHIP_92C:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_TSMC_CHIP_92C.\n"));
		break;
	case VERSION_NORMAL_TSMC_CHIP_88C:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_TSMC_CHIP_88C.\n"));
		break;
	case VERSION_NORMAL_UMC_CHIP_92C_1T2R_A_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_UMC_CHIP_i"
			"92C_1T2R_A_CUT.\n"));
		break;
	case VERSION_NORMAL_UMC_CHIP_92C_A_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_UMC_CHIP_"
			"92C_A_CUT.\n"));
		break;
	case VERSION_NORMAL_UMC_CHIP_88C_A_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
			"_88C_A_CUT.\n"));
		break;
	case VERSION_NORMAL_UMC_CHIP_92C_1T2R_B_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
			"_92C_1T2R_B_CUT.\n"));
		break;
	case VERSION_NORMAL_UMC_CHIP_92C_B_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
			"_92C_B_CUT.\n"));
		break;
	case VERSION_NORMAL_UMC_CHIP_88C_B_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMAL_UMC_CHIP"
			"_88C_B_CUT.\n"));
		break;
	case VERSION_NORMA_UMC_CHIP_8723_1T1R_A_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMA_UMC_CHIP"
			"_8723_1T1R_A_CUT.\n"));
		break;
	case VERSION_NORMA_UMC_CHIP_8723_1T1R_B_CUT:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_NORMA_UMC_CHIP"
			"_8723_1T1R_B_CUT.\n"));
		break;
	case VERSION_TEST_CHIP_92C:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_TEST_CHIP_92C.\n"));
		break;
	case VERSION_TEST_CHIP_88C:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: VERSION_TEST_CHIP_88C.\n"));
		break;
	default:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
			("Chip Version ID: ???????????????.\n"));
		break;
	}
	if (IS_92C_SERIAL(rtlhal->version))
		rtlphy->rf_type =
			 (IS_92C_1T2R(rtlhal->version)) ? RF_1T2R : RF_2T2R;
	else
		rtlphy->rf_type = RF_1T1R;
	RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
		 ("Chip RF Type: %s\n", (rtlphy->rf_type == RF_2T2R) ?
		  "RF_2T2R" : "RF_1T1R"));
	if (get_rf_type(rtlphy) == RF_1T1R)
		rtlpriv->dm.rfpath_rxenable[0] = true;
	else
		rtlpriv->dm.rfpath_rxenable[0] =
		    rtlpriv->dm.rfpath_rxenable[1] = true;
	RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, ("VersionID = 0x%4x\n",
						rtlhal->version));
}

/**
 * writeLLT - LLT table write access
 * @io: io callback
 * @address: LLT logical address.
 * @data: LLT data content
 *
 * Realtek hardware access function.
 *
 */
bool rtl92c_llt_write(struct ieee80211_hw *hw, u32 address, u32 data)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	bool status = true;
	long count = 0;
	u32 value = _LLT_INIT_ADDR(address) |
	    _LLT_INIT_DATA(data) | _LLT_OP(_LLT_WRITE_ACCESS);

	rtl_write_dword(rtlpriv, REG_LLT_INIT, value);
	do {
		value = rtl_read_dword(rtlpriv, REG_LLT_INIT);
		if (_LLT_NO_ACTIVE == _LLT_OP_VALUE(value))
			break;
		if (count > POLLING_LLT_THRESHOLD) {
			RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
				 ("Failed to polling write LLT done at"
				 " address %d! _LLT_OP_VALUE(%x)\n",
				 address, _LLT_OP_VALUE(value)));
			status = false;
			break;
		}
	} while (++count);
	return status;
}
/**
 * rtl92c_init_LLT_table - Init LLT table
 * @io: io callback
 * @boundary:
 *
 * Realtek hardware access function.
 *
 */
bool rtl92c_init_llt_table(struct ieee80211_hw *hw, u32 boundary)
{
	bool rst = true;
	u32	i;

	for (i = 0; i < (boundary - 1); i++) {
		rst = rtl92c_llt_write(hw, i , i + 1);
		if (true != rst) {
			pr_err("===> %s #1 fail\n", __func__);
			return rst;
		}
	}
	/* end of list */
	rst = rtl92c_llt_write(hw, (boundary - 1), 0xFF);
	if (true != rst) {
		pr_err("===> %s #2 fail\n", __func__);
		return rst;
	}
	/* Make the other pages as ring buffer
	 * This ring buffer is used as beacon buffer if we config this MAC
	 *  as two MAC transfer.
	 * Otherwise used as local loopback buffer.
	 */
	for (i = boundary; i < LLT_LAST_ENTRY_OF_TX_PKT_BUFFER; i++) {
		rst = rtl92c_llt_write(hw, i, (i + 1));
		if (true != rst) {
			pr_err("===> %s #3 fail\n", __func__);
			return rst;
		}
	}
	/* Let last entry point to the start entry of ring buffer */
	rst = rtl92c_llt_write(hw, LLT_LAST_ENTRY_OF_TX_PKT_BUFFER, boundary);
	if (true != rst) {
		pr_err("===> %s #4 fail\n", __func__);
		return rst;
	}
	return rst;
}
void rtl92c_set_key(struct ieee80211_hw *hw, u32 key_index,
		     u8 *p_macaddr, bool is_group, u8 enc_algo,
		     bool is_wepkey, bool clear_all)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
	u8 *macaddr = p_macaddr;
	u32 entry_id = 0;
	bool is_pairwise = false;
	static u8 cam_const_addr[4][6] = {
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
		{0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
	};
	static u8 cam_const_broad[] = {
		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
	};

	if (clear_all) {
		u8 idx = 0;
		u8 cam_offset = 0;
		u8 clear_number = 5;

		RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("clear_all\n"));
		for (idx = 0; idx < clear_number; idx++) {
			rtl_cam_mark_invalid(hw, cam_offset + idx);
			rtl_cam_empty_entry(hw, cam_offset + idx);
			if (idx < 5) {
				memset(rtlpriv->sec.key_buf[idx], 0,
				       MAX_KEY_LEN);
				rtlpriv->sec.key_len[idx] = 0;
			}
		}
	} else {
		switch (enc_algo) {
		case WEP40_ENCRYPTION:
			enc_algo = CAM_WEP40;
			break;
		case WEP104_ENCRYPTION:
			enc_algo = CAM_WEP104;
			break;
		case TKIP_ENCRYPTION:
			enc_algo = CAM_TKIP;
			break;
		case AESCCMP_ENCRYPTION:
			enc_algo = CAM_AES;
			break;
		default:
			RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
				("iillegal switch case\n"));
			enc_algo = CAM_TKIP;
			break;
		}
		if (is_wepkey || rtlpriv->sec.use_defaultkey) {
			macaddr = cam_const_addr[key_index];
			entry_id = key_index;
		} else {
			if (is_group) {
				macaddr = cam_const_broad;
				entry_id = key_index;
			} else {
				key_index = PAIRWISE_KEYIDX;
				entry_id = CAM_PAIRWISE_KEY_POSITION;
				is_pairwise = true;
			}
		}
		if (rtlpriv->sec.key_len[key_index] == 0) {
			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
				 ("delete one entry\n"));
			rtl_cam_delete_one_entry(hw, p_macaddr, entry_id);
		} else {
			RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
				 ("The insert KEY length is %d\n",
				  rtlpriv->sec.key_len[PAIRWISE_KEYIDX]));
			RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
				 ("The insert KEY  is %x %x\n",
				  rtlpriv->sec.key_buf[0][0],
				  rtlpriv->sec.key_buf[0][1]));
			RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
				 ("add one entry\n"));
			if (is_pairwise) {
				RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_LOUD,
					      "Pairwise Key content",
					      rtlpriv->sec.pairwise_key,
					      rtlpriv->sec.
					      key_len[PAIRWISE_KEYIDX]);
				RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
					 ("set Pairwiase key\n"));

				rtl_cam_add_one_entry(hw, macaddr, key_index,
						entry_id, enc_algo,
						CAM_CONFIG_NO_USEDK,
						rtlpriv->sec.
						key_buf[key_index]);
			} else {
				RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
					 ("set group key\n"));
				if (mac->opmode == NL80211_IFTYPE_ADHOC) {
					rtl_cam_add_one_entry(hw,
						rtlefuse->dev_addr,
						PAIRWISE_KEYIDX,
						CAM_PAIRWISE_KEY_POSITION,
						enc_algo,
						CAM_CONFIG_NO_USEDK,
						rtlpriv->sec.key_buf
						[entry_id]);
				}
				rtl_cam_add_one_entry(hw, macaddr, key_index,
						entry_id, enc_algo,
						CAM_CONFIG_NO_USEDK,
						rtlpriv->sec.key_buf[entry_id]);
			}
		}
	}
}

u32 rtl92c_get_txdma_status(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	return rtl_read_dword(rtlpriv, REG_TXDMA_STATUS);
}

void rtl92c_enable_interrupt(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
	struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
	struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));

	if (IS_HARDWARE_TYPE_8192CE(rtlhal)) {
		rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] &
				0xFFFFFFFF);
		rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] &
				0xFFFFFFFF);
	} else {
		rtl_write_dword(rtlpriv, REG_HIMR, rtlusb->irq_mask[0] &
				0xFFFFFFFF);
		rtl_write_dword(rtlpriv, REG_HIMRE, rtlusb->irq_mask[1] &
				0xFFFFFFFF);
	}
}

void rtl92c_init_interrupt(struct ieee80211_hw *hw)
{
	 rtl92c_enable_interrupt(hw);
}

void rtl92c_disable_interrupt(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_dword(rtlpriv, REG_HIMR, IMR8190_DISABLED);
	rtl_write_dword(rtlpriv, REG_HIMRE, IMR8190_DISABLED);
}

void rtl92c_set_qos(struct ieee80211_hw *hw, int aci)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	u32 u4b_ac_param;

	rtl92c_dm_init_edca_turbo(hw);
	u4b_ac_param = (u32) mac->ac[aci].aifs;
	u4b_ac_param |=
	    ((u32) le16_to_cpu(mac->ac[aci].cw_min) & 0xF) <<
	    AC_PARAM_ECW_MIN_OFFSET;
	u4b_ac_param |=
	    ((u32) le16_to_cpu(mac->ac[aci].cw_max) & 0xF) <<
	    AC_PARAM_ECW_MAX_OFFSET;
	u4b_ac_param |= (u32) le16_to_cpu(mac->ac[aci].tx_op) <<
			 AC_PARAM_TXOP_OFFSET;
	RT_TRACE(rtlpriv, COMP_QOS, DBG_LOUD,
		 ("queue:%x, ac_param:%x\n", aci, u4b_ac_param));
	switch (aci) {
	case AC1_BK:
		rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, u4b_ac_param);
		break;
	case AC0_BE:
		rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, u4b_ac_param);
		break;
	case AC2_VI:
		rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, u4b_ac_param);
		break;
	case AC3_VO:
		rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, u4b_ac_param);
		break;
	default:
		RT_ASSERT(false, ("invalid aci: %d !\n", aci));
		break;
	}
}

/*-------------------------------------------------------------------------
 * HW MAC Address
 *-------------------------------------------------------------------------*/
void rtl92c_set_mac_addr(struct ieee80211_hw *hw, const u8 *addr)
{
	u32 i;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	for (i = 0 ; i < ETH_ALEN ; i++)
		rtl_write_byte(rtlpriv, (REG_MACID + i), *(addr+i));

	RT_TRACE(rtlpriv, COMP_CMD, DBG_DMESG, ("MAC Address: %02X-%02X-%02X-"
		"%02X-%02X-%02X\n",
		rtl_read_byte(rtlpriv, REG_MACID),
		rtl_read_byte(rtlpriv, REG_MACID+1),
		rtl_read_byte(rtlpriv, REG_MACID+2),
		rtl_read_byte(rtlpriv, REG_MACID+3),
		rtl_read_byte(rtlpriv, REG_MACID+4),
		rtl_read_byte(rtlpriv, REG_MACID+5)));
}

void rtl92c_init_driver_info_size(struct ieee80211_hw *hw, u8 size)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	rtl_write_byte(rtlpriv, REG_RX_DRVINFO_SZ, size);
}

int rtl92c_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type)
{
	u8 value;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	switch (type) {
	case NL80211_IFTYPE_UNSPECIFIED:
		value = NT_NO_LINK;
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			("Set Network type to NO LINK!\n"));
		break;
	case NL80211_IFTYPE_ADHOC:
		value = NT_LINK_AD_HOC;
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			("Set Network type to Ad Hoc!\n"));
		break;
	case NL80211_IFTYPE_STATION:
		value = NT_LINK_AP;
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			("Set Network type to STA!\n"));
		break;
	case NL80211_IFTYPE_AP:
		value = NT_AS_AP;
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			("Set Network type to AP!\n"));
		break;
	default:
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			("Network type %d not support!\n", type));
		return -EOPNOTSUPP;
	}
	rtl_write_byte(rtlpriv, (REG_CR + 2), value);
	return 0;
}

void rtl92c_init_network_type(struct ieee80211_hw *hw)
{
	rtl92c_set_network_type(hw, NL80211_IFTYPE_UNSPECIFIED);
}

void rtl92c_init_adaptive_ctrl(struct ieee80211_hw *hw)
{
	u16	value16;
	u32	value32;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	/* Response Rate Set */
	value32 = rtl_read_dword(rtlpriv, REG_RRSR);
	value32 &= ~RATE_BITMAP_ALL;
	value32 |= RATE_RRSR_CCK_ONLY_1M;
	rtl_write_dword(rtlpriv, REG_RRSR, value32);
	/* SIFS (used in NAV) */
	value16 = _SPEC_SIFS_CCK(0x10) | _SPEC_SIFS_OFDM(0x10);
	rtl_write_word(rtlpriv,  REG_SPEC_SIFS, value16);
	/* Retry Limit */
	value16 = _LRL(0x30) | _SRL(0x30);
	rtl_write_dword(rtlpriv,  REG_RL, value16);
}

void rtl92c_init_rate_fallback(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	/* Set Data Auto Rate Fallback Retry Count register. */
	rtl_write_dword(rtlpriv,  REG_DARFRC, 0x00000000);
	rtl_write_dword(rtlpriv,  REG_DARFRC+4, 0x10080404);
	rtl_write_dword(rtlpriv,  REG_RARFRC, 0x04030201);
	rtl_write_dword(rtlpriv,  REG_RARFRC+4, 0x08070605);
}

static void rtl92c_set_cck_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
				u8 ctx_sifs)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_byte(rtlpriv, REG_SIFS_CCK, trx_sifs);
	rtl_write_byte(rtlpriv, (REG_SIFS_CCK + 1), ctx_sifs);
}

static void rtl92c_set_ofdm_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
				 u8 ctx_sifs)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_byte(rtlpriv, REG_SIFS_OFDM, trx_sifs);
	rtl_write_byte(rtlpriv, (REG_SIFS_OFDM + 1), ctx_sifs);
}

void rtl92c_init_edca_param(struct ieee80211_hw *hw,
			    u16 queue, u16 txop, u8 cw_min, u8 cw_max, u8 aifs)
{
	/* sequence: VO, VI, BE, BK ==> the same as 92C hardware design.
	 * referenc : enum nl80211_txq_q or ieee80211_set_wmm_default function.
	 */
	u32 value;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	value = (u32)aifs;
	value |= ((u32)cw_min & 0xF) << 8;
	value |= ((u32)cw_max & 0xF) << 12;
	value |= (u32)txop << 16;
	/* 92C hardware register sequence is the same as queue number. */
	rtl_write_dword(rtlpriv, (REG_EDCA_VO_PARAM + (queue * 4)), value);
}

void rtl92c_init_edca(struct ieee80211_hw *hw)
{
	u16 value16;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	/* disable EDCCA count down, to reduce collison and retry */
	value16 = rtl_read_word(rtlpriv, REG_RD_CTRL);
	value16 |= DIS_EDCA_CNT_DWN;
	rtl_write_word(rtlpriv, REG_RD_CTRL, value16);
	/* Update SIFS timing.  ??????????
	 * pHalData->SifsTime = 0x0e0e0a0a; */
	rtl92c_set_cck_sifs(hw, 0xa, 0xa);
	rtl92c_set_ofdm_sifs(hw, 0xe, 0xe);
	/* Set CCK/OFDM SIFS to be 10us. */
	rtl_write_word(rtlpriv, REG_SIFS_CCK, 0x0a0a);
	rtl_write_word(rtlpriv, REG_SIFS_OFDM, 0x1010);
	rtl_write_word(rtlpriv, REG_PROT_MODE_CTRL, 0x0204);
	rtl_write_dword(rtlpriv, REG_BAR_MODE_CTRL, 0x014004);
	/* TXOP */
	rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, 0x005EA42B);
	rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, 0x0000A44F);
	rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, 0x005EA324);
	rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, 0x002FA226);
	/* PIFS */
	rtl_write_byte(rtlpriv, REG_PIFS, 0x1C);
	/* AGGR BREAK TIME Register */
	rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
	rtl_write_word(rtlpriv, REG_NAV_PROT_LEN, 0x0040);
	rtl_write_byte(rtlpriv, REG_BCNDMATIM, 0x02);
	rtl_write_byte(rtlpriv, REG_ATIMWND, 0x02);
}

void rtl92c_init_ampdu_aggregation(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_dword(rtlpriv, REG_AGGLEN_LMT, 0x99997631);
	rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
	/* init AMPDU aggregation number, tuning for Tx's TP, */
	rtl_write_word(rtlpriv, 0x4CA, 0x0708);
}

void rtl92c_init_beacon_max_error(struct ieee80211_hw *hw, bool infra_mode)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_byte(rtlpriv, REG_BCN_MAX_ERR, 0xFF);
}

void rtl92c_init_rdg_setting(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_byte(rtlpriv, REG_RD_CTRL, 0xFF);
	rtl_write_word(rtlpriv, REG_RD_NAV_NXT, 0x200);
	rtl_write_byte(rtlpriv, REG_RD_RESP_PKT_TH, 0x05);
}

void rtl92c_init_retry_function(struct ieee80211_hw *hw)
{
	u8	value8;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	value8 = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL);
	value8 |= EN_AMPDU_RTY_NEW;
	rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL, value8);
	/* Set ACK timeout */
	rtl_write_byte(rtlpriv, REG_ACKTO, 0x40);
}

void rtl92c_init_beacon_parameters(struct ieee80211_hw *hw,
				   enum version_8192c version)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_hal *rtlhal = rtl_hal(rtlpriv);

	rtl_write_word(rtlpriv, REG_TBTT_PROHIBIT, 0x6404);/* ms */
	rtl_write_byte(rtlpriv, REG_DRVERLYINT, DRIVER_EARLY_INT_TIME);/*ms*/
	rtl_write_byte(rtlpriv, REG_BCNDMATIM, BCN_DMA_ATIME_INT_TIME);
	if (IS_NORMAL_CHIP(rtlhal->version))
		rtl_write_word(rtlpriv, REG_BCNTCFG, 0x660F);
	else
		rtl_write_word(rtlpriv, REG_BCNTCFG, 0x66FF);
}

void rtl92c_disable_fast_edca(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_word(rtlpriv, REG_FAST_EDCA_CTRL, 0);
}

void rtl92c_set_min_space(struct ieee80211_hw *hw, bool is2T)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u8 value = is2T ? MAX_MSS_DENSITY_2T : MAX_MSS_DENSITY_1T;

	rtl_write_byte(rtlpriv, REG_AMPDU_MIN_SPACE, value);
}

u16 rtl92c_get_mgt_filter(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	return rtl_read_word(rtlpriv, REG_RXFLTMAP0);
}

void rtl92c_set_mgt_filter(struct ieee80211_hw *hw, u16 filter)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_word(rtlpriv, REG_RXFLTMAP0, filter);
}

u16 rtl92c_get_ctrl_filter(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	return rtl_read_word(rtlpriv, REG_RXFLTMAP1);
}

void rtl92c_set_ctrl_filter(struct ieee80211_hw *hw, u16 filter)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_word(rtlpriv, REG_RXFLTMAP1, filter);
}

u16 rtl92c_get_data_filter(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	return rtl_read_word(rtlpriv,  REG_RXFLTMAP2);
}

void rtl92c_set_data_filter(struct ieee80211_hw *hw, u16 filter)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	rtl_write_word(rtlpriv, REG_RXFLTMAP2, filter);
}
/*==============================================================*/

static u8 _rtl92c_query_rxpwrpercentage(char antpower)
{
	if ((antpower <= -100) || (antpower >= 20))
		return 0;
	else if (antpower >= 0)
		return 100;
	else
		return 100 + antpower;
}

static u8 _rtl92c_evm_db_to_percentage(char value)
{
	char ret_val;

	ret_val = value;
	if (ret_val >= 0)
		ret_val = 0;
	if (ret_val <= -33)
		ret_val = -33;
	ret_val = 0 - ret_val;
	ret_val *= 3;
	if (ret_val == 99)
		ret_val = 100;
	return ret_val;
}

static long _rtl92c_translate_todbm(struct ieee80211_hw *hw,
				     u8 signal_strength_index)
{
	long signal_power;

	signal_power = (long)((signal_strength_index + 1) >> 1);
	signal_power -= 95;
	return signal_power;
}

static long _rtl92c_signal_scale_mapping(struct ieee80211_hw *hw,
		long currsig)
{
	long retsig;

	if (currsig >= 61 && currsig <= 100)
		retsig = 90 + ((currsig - 60) / 4);
	else if (currsig >= 41 && currsig <= 60)
		retsig = 78 + ((currsig - 40) / 2);
	else if (currsig >= 31 && currsig <= 40)
		retsig = 66 + (currsig - 30);
	else if (currsig >= 21 && currsig <= 30)
		retsig = 54 + (currsig - 20);
	else if (currsig >= 5 && currsig <= 20)
		retsig = 42 + (((currsig - 5) * 2) / 3);
	else if (currsig == 4)
		retsig = 36;
	else if (currsig == 3)
		retsig = 27;
	else if (currsig == 2)
		retsig = 18;
	else if (currsig == 1)
		retsig = 9;
	else
		retsig = currsig;
	return retsig;
}

static void _rtl92c_query_rxphystatus(struct ieee80211_hw *hw,
				      struct rtl_stats *pstats,
				      struct rx_desc_92c *pdesc,
				      struct rx_fwinfo_92c *p_drvinfo,
				      bool packet_match_bssid,
				      bool packet_toself,
				      bool packet_beacon)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	struct phy_sts_cck_8192s_t *cck_buf;
	s8 rx_pwr_all = 0, rx_pwr[4];
	u8 rf_rx_num = 0, evm, pwdb_all;
	u8 i, max_spatial_stream;
	u32 rssi, total_rssi = 0;
	bool in_powersavemode = false;
	bool is_cck_rate;

	is_cck_rate = RX_HAL_IS_CCK_RATE(pdesc);
	pstats->packet_matchbssid = packet_match_bssid;
	pstats->packet_toself = packet_toself;
	pstats->is_cck = is_cck_rate;
	pstats->packet_beacon = packet_beacon;
	pstats->is_cck = is_cck_rate;
	pstats->RX_SIGQ[0] = -1;
	pstats->RX_SIGQ[1] = -1;
	if (is_cck_rate) {
		u8 report, cck_highpwr;
		cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo;
		if (!in_powersavemode)
			cck_highpwr = rtlphy->cck_high_power;
		else
			cck_highpwr = false;
		if (!cck_highpwr) {
			u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
			report = cck_buf->cck_agc_rpt & 0xc0;
			report = report >> 6;
			switch (report) {
			case 0x3:
				rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
				break;
			case 0x2:
				rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
				break;
			case 0x1:
				rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
				break;
			case 0x0:
				rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
				break;
			}
		} else {
			u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
			report = p_drvinfo->cfosho[0] & 0x60;
			report = report >> 5;
			switch (report) {
			case 0x3:
				rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			case 0x2:
				rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			case 0x1:
				rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			case 0x0:
				rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1);
				break;
			}
		}
		pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
		pstats->rx_pwdb_all = pwdb_all;
		pstats->recvsignalpower = rx_pwr_all;
		if (packet_match_bssid) {
			u8 sq;
			if (pstats->rx_pwdb_all > 40)
				sq = 100;
			else {
				sq = cck_buf->sq_rpt;
				if (sq > 64)
					sq = 0;
				else if (sq < 20)
					sq = 100;
				else
					sq = ((64 - sq) * 100) / 44;
			}
			pstats->signalquality = sq;
			pstats->RX_SIGQ[0] = sq;
			pstats->RX_SIGQ[1] = -1;
		}
	} else {
		rtlpriv->dm.rfpath_rxenable[0] =
		    rtlpriv->dm.rfpath_rxenable[1] = true;
		for (i = RF90_PATH_A; i < RF90_PATH_MAX; i++) {
			if (rtlpriv->dm.rfpath_rxenable[i])
				rf_rx_num++;
			rx_pwr[i] =
			    ((p_drvinfo->gain_trsw[i] & 0x3f) * 2) - 110;
			rssi = _rtl92c_query_rxpwrpercentage(rx_pwr[i]);
			total_rssi += rssi;
			rtlpriv->stats.rx_snr_db[i] =
			    (long)(p_drvinfo->rxsnr[i] / 2);

			if (packet_match_bssid)
				pstats->rx_mimo_signalstrength[i] = (u8) rssi;
		}
		rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110;
		pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
		pstats->rx_pwdb_all = pwdb_all;
		pstats->rxpower = rx_pwr_all;
		pstats->recvsignalpower = rx_pwr_all;
		if (GET_RX_DESC_RX_MCS(pdesc) &&
		    GET_RX_DESC_RX_MCS(pdesc) >= DESC92_RATEMCS8 &&
		    GET_RX_DESC_RX_MCS(pdesc) <= DESC92_RATEMCS15)
			max_spatial_stream = 2;
		else
			max_spatial_stream = 1;
		for (i = 0; i < max_spatial_stream; i++) {
			evm = _rtl92c_evm_db_to_percentage(p_drvinfo->rxevm[i]);
			if (packet_match_bssid) {
				if (i == 0)
					pstats->signalquality =
					    (u8) (evm & 0xff);
				pstats->RX_SIGQ[i] =
				    (u8) (evm & 0xff);
			}
		}
	}
	if (is_cck_rate)
		pstats->signalstrength =
		    (u8) (_rtl92c_signal_scale_mapping(hw, pwdb_all));
	else if (rf_rx_num != 0)
		pstats->signalstrength =
		    (u8) (_rtl92c_signal_scale_mapping
			  (hw, total_rssi /= rf_rx_num));
}

static void _rtl92c_process_ui_rssi(struct ieee80211_hw *hw,
		struct rtl_stats *pstats)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	u8 rfpath;
	u32 last_rssi, tmpval;

	if (pstats->packet_toself || pstats->packet_beacon) {
		rtlpriv->stats.rssi_calculate_cnt++;
		if (rtlpriv->stats.ui_rssi.total_num++ >=
		    PHY_RSSI_SLID_WIN_MAX) {
			rtlpriv->stats.ui_rssi.total_num =
			    PHY_RSSI_SLID_WIN_MAX;
			last_rssi =
			    rtlpriv->stats.ui_rssi.elements[rtlpriv->
							   stats.ui_rssi.index];
			rtlpriv->stats.ui_rssi.total_val -= last_rssi;
		}
		rtlpriv->stats.ui_rssi.total_val += pstats->signalstrength;
		rtlpriv->stats.ui_rssi.elements[rtlpriv->stats.ui_rssi.
					index++] = pstats->signalstrength;
		if (rtlpriv->stats.ui_rssi.index >= PHY_RSSI_SLID_WIN_MAX)
			rtlpriv->stats.ui_rssi.index = 0;
		tmpval = rtlpriv->stats.ui_rssi.total_val /
		    rtlpriv->stats.ui_rssi.total_num;
		rtlpriv->stats.signal_strength =
		    _rtl92c_translate_todbm(hw, (u8) tmpval);
		pstats->rssi = rtlpriv->stats.signal_strength;
	}
	if (!pstats->is_cck && pstats->packet_toself) {
		for (rfpath = RF90_PATH_A; rfpath < rtlphy->num_total_rfpath;
		     rfpath++) {
			if (!rtl8192_phy_check_is_legal_rfpath(hw, rfpath))
				continue;
			if (rtlpriv->stats.rx_rssi_percentage[rfpath] == 0) {
				rtlpriv->stats.rx_rssi_percentage[rfpath] =
				    pstats->rx_mimo_signalstrength[rfpath];
			}
			if (pstats->rx_mimo_signalstrength[rfpath] >
			    rtlpriv->stats.rx_rssi_percentage[rfpath]) {
				rtlpriv->stats.rx_rssi_percentage[rfpath] =
				    ((rtlpriv->stats.
				      rx_rssi_percentage[rfpath] *
				      (RX_SMOOTH_FACTOR - 1)) +
				     (pstats->rx_mimo_signalstrength[rfpath])) /
				    (RX_SMOOTH_FACTOR);

				rtlpriv->stats.rx_rssi_percentage[rfpath] =
				    rtlpriv->stats.rx_rssi_percentage[rfpath] +
				    1;
			} else {
				rtlpriv->stats.rx_rssi_percentage[rfpath] =
				    ((rtlpriv->stats.
				      rx_rssi_percentage[rfpath] *
				      (RX_SMOOTH_FACTOR - 1)) +
				     (pstats->rx_mimo_signalstrength[rfpath])) /
				    (RX_SMOOTH_FACTOR);
			}
		}
	}
}

static void _rtl92c_update_rxsignalstatistics(struct ieee80211_hw *hw,
					       struct rtl_stats *pstats)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	int weighting = 0;

	if (rtlpriv->stats.recv_signal_power == 0)
		rtlpriv->stats.recv_signal_power = pstats->recvsignalpower;
	if (pstats->recvsignalpower > rtlpriv->stats.recv_signal_power)
		weighting = 5;
	else if (pstats->recvsignalpower < rtlpriv->stats.recv_signal_power)
		weighting = (-5);
	rtlpriv->stats.recv_signal_power =
	    (rtlpriv->stats.recv_signal_power * 5 +
	     pstats->recvsignalpower + weighting) / 6;
}

static void _rtl92c_process_pwdb(struct ieee80211_hw *hw,
		struct rtl_stats *pstats)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	long undecorated_smoothed_pwdb = 0;

	if (mac->opmode == NL80211_IFTYPE_ADHOC) {
		return;
	} else {
		undecorated_smoothed_pwdb =
		    rtlpriv->dm.undecorated_smoothed_pwdb;
	}
	if (pstats->packet_toself || pstats->packet_beacon) {
		if (undecorated_smoothed_pwdb < 0)
			undecorated_smoothed_pwdb = pstats->rx_pwdb_all;
		if (pstats->rx_pwdb_all > (u32) undecorated_smoothed_pwdb) {
			undecorated_smoothed_pwdb =
			    (((undecorated_smoothed_pwdb) *
			      (RX_SMOOTH_FACTOR - 1)) +
			     (pstats->rx_pwdb_all)) / (RX_SMOOTH_FACTOR);
			undecorated_smoothed_pwdb = undecorated_smoothed_pwdb
			    + 1;
		} else {
			undecorated_smoothed_pwdb =
			    (((undecorated_smoothed_pwdb) *
			      (RX_SMOOTH_FACTOR - 1)) +
			     (pstats->rx_pwdb_all)) / (RX_SMOOTH_FACTOR);
		}
		rtlpriv->dm.undecorated_smoothed_pwdb =
		    undecorated_smoothed_pwdb;
		_rtl92c_update_rxsignalstatistics(hw, pstats);
	}
}

static void _rtl92c_process_LINK_Q(struct ieee80211_hw *hw,
					     struct rtl_stats *pstats)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u32 last_evm = 0, n_stream, tmpval;

	if (pstats->signalquality != 0) {
		if (pstats->packet_toself || pstats->packet_beacon) {
			if (rtlpriv->stats.LINK_Q.total_num++ >=
			    PHY_LINKQUALITY_SLID_WIN_MAX) {
				rtlpriv->stats.LINK_Q.total_num =
				    PHY_LINKQUALITY_SLID_WIN_MAX;
				last_evm =
				    rtlpriv->stats.LINK_Q.elements
				    [rtlpriv->stats.LINK_Q.index];
				rtlpriv->stats.LINK_Q.total_val -=
				    last_evm;
			}
			rtlpriv->stats.LINK_Q.total_val +=
			    pstats->signalquality;
			rtlpriv->stats.LINK_Q.elements
			   [rtlpriv->stats.LINK_Q.index++] =
			    pstats->signalquality;
			if (rtlpriv->stats.LINK_Q.index >=
			    PHY_LINKQUALITY_SLID_WIN_MAX)
				rtlpriv->stats.LINK_Q.index = 0;
			tmpval = rtlpriv->stats.LINK_Q.total_val /
			    rtlpriv->stats.LINK_Q.total_num;
			rtlpriv->stats.signal_quality = tmpval;
			rtlpriv->stats.last_sigstrength_inpercent = tmpval;
			for (n_stream = 0; n_stream < 2;
			     n_stream++) {
				if (pstats->RX_SIGQ[n_stream] != -1) {
					if (!rtlpriv->stats.RX_EVM[n_stream]) {
						rtlpriv->stats.RX_EVM[n_stream]
						 = pstats->RX_SIGQ[n_stream];
					}
					rtlpriv->stats.RX_EVM[n_stream] =
					    ((rtlpriv->stats.RX_EVM
					    [n_stream] *
					    (RX_SMOOTH_FACTOR - 1)) +
					    (pstats->RX_SIGQ
					    [n_stream] * 1)) /
					    (RX_SMOOTH_FACTOR);
				}
			}
		}
	} else {
		;
	}
}

static void _rtl92c_process_phyinfo(struct ieee80211_hw *hw,
				     u8 *buffer,
				     struct rtl_stats *pcurrent_stats)
{
	if (!pcurrent_stats->packet_matchbssid &&
	    !pcurrent_stats->packet_beacon)
		return;
	_rtl92c_process_ui_rssi(hw, pcurrent_stats);
	_rtl92c_process_pwdb(hw, pcurrent_stats);
	_rtl92c_process_LINK_Q(hw, pcurrent_stats);
}

void rtl92c_translate_rx_signal_stuff(struct ieee80211_hw *hw,
					       struct sk_buff *skb,
					       struct rtl_stats *pstats,
					       struct rx_desc_92c *pdesc,
					       struct rx_fwinfo_92c *p_drvinfo)
{
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
	struct ieee80211_hdr *hdr;
	u8 *tmp_buf;
	u8 *praddr;
	__le16 fc;
	u16 type, cpu_fc;
	bool packet_matchbssid, packet_toself, packet_beacon;

	tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift;
	hdr = (struct ieee80211_hdr *)tmp_buf;
	fc = hdr->frame_control;
	cpu_fc = le16_to_cpu(fc);
	type = WLAN_FC_GET_TYPE(fc);
	praddr = hdr->addr1;
	packet_matchbssid =
	    ((IEEE80211_FTYPE_CTL != type) &&
	     (!compare_ether_addr(mac->bssid,
			  (cpu_fc & IEEE80211_FCTL_TODS) ?
			  hdr->addr1 : (cpu_fc & IEEE80211_FCTL_FROMDS) ?
			  hdr->addr2 : hdr->addr3)) &&
	     (!pstats->hwerror) && (!pstats->crc) && (!pstats->icv));

	packet_toself = packet_matchbssid &&
	    (!compare_ether_addr(praddr, rtlefuse->dev_addr));
	if (ieee80211_is_beacon(fc))
		packet_beacon = true;
	_rtl92c_query_rxphystatus(hw, pstats, pdesc, p_drvinfo,
				   packet_matchbssid, packet_toself,
				   packet_beacon);
	_rtl92c_process_phyinfo(hw, tmp_buf, pstats);
}