/******************************************************************************
*
* 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.
*
*****************************************************************************/
#include "wifi.h"
#include "cam.h"
void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
rtlpriv->sec.use_defaultkey = false;
rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
rtlpriv->sec.pairwise_key = NULL;
}
static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
u8 *mac_addr, u8 *key_cont_128, u16 us_config)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 target_command;
u32 target_content = 0;
u8 entry_i;
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
key_cont_128[0], key_cont_128[1],
key_cont_128[2], key_cont_128[3],
key_cont_128[4], key_cont_128[5]));
for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
target_command = target_command | BIT(31) | BIT(16);
if (entry_i == 0) {
target_content = (u32) (*(mac_addr + 0)) << 16 |
(u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
target_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_program_entry(): "
"WRITE %x: %x\n",
rtlpriv->cfg->maps[WCAMI], target_content));
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("The Key ID is %d\n", entry_no));
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_program_entry(): "
"WRITE %x: %x\n",
rtlpriv->cfg->maps[RWCAM], target_command));
} else if (entry_i == 1) {
target_content = (u32) (*(mac_addr + 5)) << 24 |
(u32) (*(mac_addr + 4)) << 16 |
(u32) (*(mac_addr + 3)) << 8 |
(u32) (*(mac_addr + 2));
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
target_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_program_entry(): WRITE A4: %x\n",
target_content));
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_program_entry(): WRITE A0: %x\n",
target_command));
} else {
target_content =
(u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) <<
24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2))
<< 16 |
(u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8
| (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0));
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
target_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
target_command);
udelay(100);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_program_entry(): WRITE A4: %x\n",
target_content));
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_program_entry(): WRITE A0: %x\n",
target_command));
}
}
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("after set key, usconfig:%x\n", us_config));
}
u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
u32 ul_default_key, u8 *key_content)
{
u32 us_config;
struct rtl_priv *rtlpriv = rtl_priv(hw);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
"ulUseDK=%x MacAddr" MAC_FMT "\n",
ul_entry_idx, ul_key_id, ul_enc_alg,
ul_default_key, MAC_ARG(mac_addr)));
if (ul_key_id == TOTAL_CAM_ENTRY) {
RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
("<=== ulKeyId exceed!\n"));
return 0;
}
if (ul_default_key == 1) {
us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2);
} else {
us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
}
rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
(u8 *) key_content, us_config);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
return 1;
}
EXPORT_SYMBOL(rtl_cam_add_one_entry);
int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
u8 *mac_addr, u32 ul_key_id)
{
u32 ul_command;
struct rtl_priv *rtlpriv = rtl_priv(hw);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
ul_command = ul_key_id * CAM_CONTENT_COUNT;
ul_command = ul_command | BIT(31) | BIT(16);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command));
return 0;
}
EXPORT_SYMBOL(rtl_cam_delete_one_entry);
void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
{
u32 ul_command;
struct rtl_priv *rtlpriv = rtl_priv(hw);
ul_command = BIT(31) | BIT(30);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
}
EXPORT_SYMBOL(rtl_cam_reset_all_entry);
void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 ul_command;
u32 ul_content;
u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
switch (rtlpriv->sec.pairwise_enc_algorithm) {
case WEP40_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
break;
case WEP104_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
break;
case TKIP_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
break;
case AESCCMP_ENCRYPTION:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
break;
default:
ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
}
ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
ul_content |= BIT(15);
ul_command = CAM_CONTENT_COUNT * uc_index;
ul_command = ul_command | BIT(31) | BIT(16);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
("rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
}
EXPORT_SYMBOL(rtl_cam_mark_invalid);
void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
u32 ul_command;
u32 ul_content;
u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
u8 entry_i;
switch (rtlpriv->sec.pairwise_enc_algorithm) {
case WEP40_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
break;
case WEP104_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
break;
case TKIP_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
break;
case AESCCMP_ENCRYPTION:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
break;
default:
ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
}
for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
if (entry_i == 0) {
ul_content =
(uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
ul_content |= BIT(15);
} else {
ul_content = 0;
}
ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
ul_command = ul_command | BIT(31) | BIT(16);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
("rtl_cam_empty_entry(): WRITE A4: %x\n",
ul_content));
RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
("rtl_cam_empty_entry(): WRITE A0: %x\n",
ul_command));
}
}
EXPORT_SYMBOL(rtl_cam_empty_entry);