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