// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
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*
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* Based on the r8180 driver, which is:
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* Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
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*
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* Contact Information: wlanfae <wlanfae@realtek.com>
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*/
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#include "rtl_core.h"
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#include "r8192E_phy.h"
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#include "r8192E_phyreg.h"
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#include "r8190P_rtl8256.h" /* RTL8225 Radio frontend */
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#include "r8192E_cmdpkt.h"
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void rtl92e_cam_reset(struct net_device *dev)
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{
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u32 ulcommand = 0;
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ulcommand |= BIT31|BIT30;
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rtl92e_writel(dev, RWCAM, ulcommand);
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}
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void rtl92e_enable_hw_security_config(struct net_device *dev)
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{
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u8 SECR_value = 0x0;
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struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
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struct rtllib_device *ieee = priv->rtllib;
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SECR_value = SCR_TxEncEnable | SCR_RxDecEnable;
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if (((ieee->pairwise_key_type == KEY_TYPE_WEP40) ||
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(ieee->pairwise_key_type == KEY_TYPE_WEP104)) &&
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(priv->rtllib->auth_mode != 2)) {
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SECR_value |= SCR_RxUseDK;
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SECR_value |= SCR_TxUseDK;
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} else if ((ieee->iw_mode == IW_MODE_ADHOC) &&
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(ieee->pairwise_key_type & (KEY_TYPE_CCMP |
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KEY_TYPE_TKIP))) {
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SECR_value |= SCR_RxUseDK;
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SECR_value |= SCR_TxUseDK;
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}
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ieee->hwsec_active = 1;
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if ((ieee->pHTInfo->IOTAction&HT_IOT_ACT_PURE_N_MODE) || !hwwep) {
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ieee->hwsec_active = 0;
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SECR_value &= ~SCR_RxDecEnable;
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}
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RT_TRACE(COMP_SEC, "%s:, hwsec:%d, pairwise_key:%d, SECR_value:%x\n",
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__func__, ieee->hwsec_active, ieee->pairwise_key_type,
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SECR_value);
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rtl92e_writeb(dev, SECR, SECR_value);
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}
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void rtl92e_set_swcam(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
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u16 KeyType, const u8 *MacAddr, u8 DefaultKey,
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u32 *KeyContent, u8 is_mesh)
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{
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struct r8192_priv *priv = rtllib_priv(dev);
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struct rtllib_device *ieee = priv->rtllib;
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RT_TRACE(COMP_DBG,
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"===========>%s():EntryNo is %d,KeyIndex is %d,KeyType is %d,is_mesh is %d\n",
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__func__, EntryNo, KeyIndex, KeyType, is_mesh);
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if (EntryNo >= TOTAL_CAM_ENTRY)
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return;
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if (!is_mesh) {
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ieee->swcamtable[EntryNo].bused = true;
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ieee->swcamtable[EntryNo].key_index = KeyIndex;
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ieee->swcamtable[EntryNo].key_type = KeyType;
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memcpy(ieee->swcamtable[EntryNo].macaddr, MacAddr, 6);
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ieee->swcamtable[EntryNo].useDK = DefaultKey;
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memcpy(ieee->swcamtable[EntryNo].key_buf, (u8 *)KeyContent, 16);
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}
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}
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void rtl92e_set_key(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
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u16 KeyType, const u8 *MacAddr, u8 DefaultKey,
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u32 *KeyContent)
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{
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u32 TargetCommand = 0;
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u32 TargetContent = 0;
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u16 usConfig = 0;
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u8 i;
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struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
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enum rt_rf_power_state rtState;
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rtState = priv->rtllib->eRFPowerState;
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if (priv->rtllib->PowerSaveControl.bInactivePs) {
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if (rtState == eRfOff) {
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if (priv->rtllib->RfOffReason > RF_CHANGE_BY_IPS) {
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netdev_warn(dev, "%s(): RF is OFF.\n",
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__func__);
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return;
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}
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mutex_lock(&priv->rtllib->ips_mutex);
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rtl92e_ips_leave(dev);
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mutex_unlock(&priv->rtllib->ips_mutex);
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}
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}
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priv->rtllib->is_set_key = true;
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if (EntryNo >= TOTAL_CAM_ENTRY) {
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netdev_info(dev, "%s(): Invalid CAM entry\n", __func__);
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return;
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}
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RT_TRACE(COMP_SEC,
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"====>to %s, dev:%p, EntryNo:%d, KeyIndex:%d,KeyType:%d, MacAddr %pM\n",
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__func__, dev, EntryNo, KeyIndex, KeyType, MacAddr);
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if (DefaultKey)
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usConfig |= BIT15 | (KeyType<<2);
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else
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usConfig |= BIT15 | (KeyType<<2) | KeyIndex;
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for (i = 0; i < CAM_CONTENT_COUNT; i++) {
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TargetCommand = i + CAM_CONTENT_COUNT * EntryNo;
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TargetCommand |= BIT31|BIT16;
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if (i == 0) {
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TargetContent = (u32)(*(MacAddr+0)) << 16 |
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(u32)(*(MacAddr+1)) << 24 |
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(u32)usConfig;
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rtl92e_writel(dev, WCAMI, TargetContent);
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rtl92e_writel(dev, RWCAM, TargetCommand);
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} else if (i == 1) {
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TargetContent = (u32)(*(MacAddr+2)) |
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(u32)(*(MacAddr+3)) << 8 |
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(u32)(*(MacAddr+4)) << 16 |
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(u32)(*(MacAddr+5)) << 24;
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rtl92e_writel(dev, WCAMI, TargetContent);
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rtl92e_writel(dev, RWCAM, TargetCommand);
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} else {
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if (KeyContent != NULL) {
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rtl92e_writel(dev, WCAMI,
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(u32)(*(KeyContent+i-2)));
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rtl92e_writel(dev, RWCAM, TargetCommand);
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udelay(100);
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}
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}
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}
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RT_TRACE(COMP_SEC, "=========>after set key, usconfig:%x\n", usConfig);
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}
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void rtl92e_cam_restore(struct net_device *dev)
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{
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u8 EntryId = 0;
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struct r8192_priv *priv = rtllib_priv(dev);
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u8 *MacAddr = priv->rtllib->current_network.bssid;
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static u8 CAM_CONST_ADDR[4][6] = {
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
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{0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
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};
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static u8 CAM_CONST_BROAD[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff
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};
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RT_TRACE(COMP_SEC, "%s:\n", __func__);
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if ((priv->rtllib->pairwise_key_type == KEY_TYPE_WEP40) ||
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(priv->rtllib->pairwise_key_type == KEY_TYPE_WEP104)) {
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for (EntryId = 0; EntryId < 4; EntryId++) {
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MacAddr = CAM_CONST_ADDR[EntryId];
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if (priv->rtllib->swcamtable[EntryId].bused) {
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rtl92e_set_key(dev, EntryId, EntryId,
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priv->rtllib->pairwise_key_type,
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MacAddr, 0,
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(u32 *)(&priv->rtllib->swcamtable
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[EntryId].key_buf[0]));
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}
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}
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} else if (priv->rtllib->pairwise_key_type == KEY_TYPE_TKIP) {
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if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
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rtl92e_set_key(dev, 4, 0,
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priv->rtllib->pairwise_key_type,
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(u8 *)dev->dev_addr, 0,
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(u32 *)(&priv->rtllib->swcamtable[4].
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key_buf[0]));
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} else {
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rtl92e_set_key(dev, 4, 0,
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priv->rtllib->pairwise_key_type,
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MacAddr, 0,
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(u32 *)(&priv->rtllib->swcamtable[4].
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key_buf[0]));
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}
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} else if (priv->rtllib->pairwise_key_type == KEY_TYPE_CCMP) {
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if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
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rtl92e_set_key(dev, 4, 0,
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priv->rtllib->pairwise_key_type,
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(u8 *)dev->dev_addr, 0,
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(u32 *)(&priv->rtllib->swcamtable[4].
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key_buf[0]));
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} else {
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rtl92e_set_key(dev, 4, 0,
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priv->rtllib->pairwise_key_type, MacAddr,
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0, (u32 *)(&priv->rtllib->swcamtable[4].
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key_buf[0]));
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}
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}
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if (priv->rtllib->group_key_type == KEY_TYPE_TKIP) {
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MacAddr = CAM_CONST_BROAD;
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for (EntryId = 1; EntryId < 4; EntryId++) {
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if (priv->rtllib->swcamtable[EntryId].bused) {
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rtl92e_set_key(dev, EntryId, EntryId,
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priv->rtllib->group_key_type,
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MacAddr, 0,
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(u32 *)(&priv->rtllib->swcamtable[EntryId].key_buf[0]));
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}
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}
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if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
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if (priv->rtllib->swcamtable[0].bused) {
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rtl92e_set_key(dev, 0, 0,
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priv->rtllib->group_key_type,
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CAM_CONST_ADDR[0], 0,
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(u32 *)(&priv->rtllib->swcamtable[0].key_buf[0]));
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} else {
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netdev_warn(dev,
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"%s(): ADHOC TKIP: missing key entry.\n",
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__func__);
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return;
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}
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}
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} else if (priv->rtllib->group_key_type == KEY_TYPE_CCMP) {
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MacAddr = CAM_CONST_BROAD;
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for (EntryId = 1; EntryId < 4; EntryId++) {
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if (priv->rtllib->swcamtable[EntryId].bused) {
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rtl92e_set_key(dev, EntryId, EntryId,
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priv->rtllib->group_key_type,
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MacAddr, 0,
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(u32 *)(&priv->rtllib->swcamtable[EntryId].key_buf[0]));
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}
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}
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if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
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if (priv->rtllib->swcamtable[0].bused) {
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rtl92e_set_key(dev, 0, 0,
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priv->rtllib->group_key_type,
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CAM_CONST_ADDR[0], 0,
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(u32 *)(&priv->rtllib->swcamtable[0].key_buf[0]));
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} else {
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netdev_warn(dev,
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"%s(): ADHOC CCMP: missing key entry.\n",
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__func__);
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return;
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}
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}
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}
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}
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