[deliverable/linux.git] / drivers / staging / rtl8821ae / cam.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 "wifi.h"
#include "cam.h"
#include <linux/export.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_PRINT_DATA(rtlpriv, COMP_SEC, DBG_DMESG, "Key content :",
			key_cont_128, 16);

	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(COMP_SEC, DBG_LOUD,
				 ("WRITE %x: %x \n",
				  rtlpriv->cfg->maps[WCAMI], target_content));
			RT_TRACE(COMP_SEC, DBG_LOUD,
				 ("The Key ID is %d\n", entry_no));
			RT_TRACE(COMP_SEC, DBG_LOUD,
				 ("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(COMP_SEC, DBG_LOUD,
				 ("WRITE A4: %x \n", target_content));
			RT_TRACE(COMP_SEC, DBG_LOUD,
				 ("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(COMP_SEC, DBG_LOUD,
				 ("WRITE A4: %x \n", target_content));
			RT_TRACE(COMP_SEC, DBG_LOUD,
				 ("WRITE A0: %x \n", target_command));
		}
	}

	RT_TRACE(COMP_SEC, DBG_LOUD,
		 ("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(COMP_SEC, DBG_DMESG,
		 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
		  "ulUseDK=%x MacAddr %pM\n",
		  ul_entry_idx, ul_key_id, ul_enc_alg,
		  ul_default_key, mac_addr));

	if (ul_key_id == TOTAL_CAM_ENTRY) {
		RT_TRACE(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(COMP_SEC, DBG_DMESG, ("end \n"));

	return 1;

}

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(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(COMP_SEC, DBG_DMESG,
		 ("rtl_cam_delete_one_entry(): WRITE A4: %x \n", 0));
	RT_TRACE(COMP_SEC, DBG_DMESG,
		 ("rtl_cam_delete_one_entry(): WRITE A0: %x \n", ul_command));

	return 0;

}

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);
}

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(COMP_SEC, DBG_DMESG,
		 ("rtl_cam_mark_invalid(): WRITE A4: %x \n", ul_content));
	RT_TRACE(COMP_SEC, DBG_DMESG,
		 ("rtl_cam_mark_invalid(): WRITE A0: %x \n", ul_command));
}

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(COMP_SEC, DBG_LOUD,
			 ("rtl_cam_empty_entry(): WRITE A4: %x \n",
			  ul_content));
		RT_TRACE(COMP_SEC, DBG_LOUD,
			 ("rtl_cam_empty_entry(): WRITE A0: %x \n",
			  ul_command));
	}

}

u8 rtl_cam_get_free_entry(struct ieee80211_hw *hw, u8 *sta_addr)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
	u8 entry_idx = 0;
	u8 i, *addr;

	if (NULL == sta_addr) {
		RT_TRACE(COMP_SEC, DBG_EMERG,
			("sta_addr is NULL.\n"));
		return TOTAL_CAM_ENTRY;
	}
	/* Does STA already exist? */
	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
		addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
		if(memcmp(addr, sta_addr, ETH_ALEN) == 0)
			return i;
	}
	/* Get a free CAM entry. */
	for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
		if ((bitmap & BIT(0)) == 0) {
			RT_TRACE(COMP_SEC, DBG_EMERG,
				("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
				 rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
			rtlpriv->sec.hwsec_cam_bitmap |= BIT(0) << entry_idx;
			memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
			       sta_addr, ETH_ALEN);
			return entry_idx;
		}
		bitmap = bitmap >>1;
	}
	return TOTAL_CAM_ENTRY;
}

void rtl_cam_del_entry(struct ieee80211_hw *hw, u8 *sta_addr)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u32 bitmap;
	u8 i, *addr;

	if (NULL == sta_addr) {
		RT_TRACE(COMP_SEC, DBG_EMERG,
			("sta_addr is NULL.\n"));
	}

	if ((sta_addr[0]|sta_addr[1]|sta_addr[2]|sta_addr[3]|\
				sta_addr[4]|sta_addr[5]) == 0) {
		RT_TRACE(COMP_SEC, DBG_EMERG,
			("sta_addr is 00:00:00:00:00:00.\n"));
		return;
	}
	/* Does STA already exist? */
	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
		addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
		bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
		if (((bitmap & BIT(0)) == BIT(0)) &&
		    (memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
			/* Remove from HW Security CAM */
			memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
			rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
			printk("&&&&&&&&&del entry %d\n",i);
		}
	}
	return;
}
Commit	Line	Data
3c05bedb GKH	1	/******************************************************************************
	2	*
	3	* Copyright(c) 2009-2010 Realtek Corporation.
	4	*
	5	* This program is free software; you can redistribute it and/or modify it
	6	* under the terms of version 2 of the GNU General Public License as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful, but WITHOUT
	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	12	* more details.
	13	*
	14	* You should have received a copy of the GNU General Public License along with
	15	* this program; if not, write to the Free Software Foundation, Inc.,
	16	* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
	17	*
	18	* The full GNU General Public License is included in this distribution in the
	19	* file called LICENSE.
	20	*
	21	* Contact Information:
	22	* wlanfae <wlanfae@realtek.com>
	23	* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
	24	* Hsinchu 300, Taiwan.
	25	*
	26	* Larry Finger <Larry.Finger@lwfinger.net>
	27	*
	28	*****************************************************************************/
	29	#include "wifi.h"
	30	#include "cam.h"
3c05bedb	31	#include <linux/export.h>
3c05bedb GKH	32
	33	void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
	34	{
	35	struct rtl_priv *rtlpriv = rtl_priv(hw);
	36
	37	rtlpriv->sec.use_defaultkey = false;
	38	rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
	39	rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
	40	memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
	41	memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
	42	rtlpriv->sec.pairwise_key = NULL;
	43	}
	44
	45	static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
	46	u8 mac_addr, u8 key_cont_128, u16 us_config)
	47	{
	48	struct rtl_priv *rtlpriv = rtl_priv(hw);
	49
	50	u32 target_command;
	51	u32 target_content = 0;
	52	u8 entry_i;
	53
	54	RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_DMESG, "Key content :",
	55	key_cont_128, 16);
	56
	57	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
	58	target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
	59	target_command = target_command \| BIT(31) \| BIT(16);
	60
	61	if (entry_i == 0) {
	62	target_content = (u32) (*(mac_addr + 0)) << 16 \|
	63	(u32) (*(mac_addr + 1)) << 24 \| (u32) us_config;
	64
	65	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	66	target_content);
	67	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	68	target_command);
	69
	70	RT_TRACE(COMP_SEC, DBG_LOUD,
	71	("WRITE %x: %x \n",
	72	rtlpriv->cfg->maps[WCAMI], target_content));
	73	RT_TRACE(COMP_SEC, DBG_LOUD,
	74	("The Key ID is %d\n", entry_no));
	75	RT_TRACE(COMP_SEC, DBG_LOUD,
	76	("WRITE %x: %x \n",
	77	rtlpriv->cfg->maps[RWCAM], target_command));
	78
	79	} else if (entry_i == 1) {
	80
	81	target_content = (u32) (*(mac_addr + 5)) << 24 \|
	82	(u32) (*(mac_addr + 4)) << 16 \|
	83	(u32) (*(mac_addr + 3)) << 8 \|
	84	(u32) (*(mac_addr + 2));
	85
	86	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	87	target_content);
	88	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	89	target_command);
	90
	91	RT_TRACE(COMP_SEC, DBG_LOUD,
	92	("WRITE A4: %x \n", target_content));
	93	RT_TRACE(COMP_SEC, DBG_LOUD,
	94	("WRITE A0: %x \n", target_command));
	95
96	} else {
97
98	target_content =
99	(u32) ((key_cont_128 + (entry_i 4 - 8) + 3)) <<
100	24 \| (u32) ((key_cont_128 + (entry_i 4 - 8) + 2))
101	<< 16 \|
102	(u32) ((key_cont_128 + (entry_i 4 - 8) + 1)) << 8
103	\| (u32) ((key_cont_128 + (entry_i 4 - 8) + 0));
104
105	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
106	target_content);
107	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
108	target_command);
109	udelay(100);
110
111	RT_TRACE(COMP_SEC, DBG_LOUD,
112	("WRITE A4: %x \n", target_content));
113	RT_TRACE(COMP_SEC, DBG_LOUD,
114	("WRITE A0: %x \n", target_command));
115	}
116	}
117
118	RT_TRACE(COMP_SEC, DBG_LOUD,
119	("after set key, usconfig:%x\n", us_config));
120	}
121
122	u8 rtl_cam_add_one_entry(struct ieee80211_hw hw, u8 mac_addr,
123	u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
124	u32 ul_default_key, u8 *key_content)
125	{
126	u32 us_config;
127	struct rtl_priv *rtlpriv = rtl_priv(hw);
128
129	RT_TRACE(COMP_SEC, DBG_DMESG,
130	("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
131	"ulUseDK=%x MacAddr %pM\n",
132	ul_entry_idx, ul_key_id, ul_enc_alg,
133	ul_default_key, mac_addr));
134
135	if (ul_key_id == TOTAL_CAM_ENTRY) {
136	RT_TRACE(COMP_ERR, DBG_WARNING,
137	("ulKeyId exceed!\n"));
138	return 0;
139	}
140
141	if (ul_default_key == 1) {
142	us_config = CFG_VALID \| ((u16) (ul_enc_alg) << 2);
143	} else {
144	us_config = CFG_VALID \| ((ul_enc_alg) << 2) \| ul_key_id;
145	}
146
147	rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
148	(u8 *) key_content, us_config);
149
150	RT_TRACE(COMP_SEC, DBG_DMESG, ("end \n"));
151
152	return 1;
153
154	}
3c05bedb GKH	155
	156	int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
	157	u8 *mac_addr, u32 ul_key_id)
	158	{
	159	u32 ul_command;
	160	struct rtl_priv *rtlpriv = rtl_priv(hw);
	161
	162	RT_TRACE(COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
	163
	164	ul_command = ul_key_id * CAM_CONTENT_COUNT;
	165	ul_command = ul_command \| BIT(31) \| BIT(16);
	166
	167	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
	168	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	169
	170	RT_TRACE(COMP_SEC, DBG_DMESG,
	171	("rtl_cam_delete_one_entry(): WRITE A4: %x \n", 0));
	172	RT_TRACE(COMP_SEC, DBG_DMESG,
	173	("rtl_cam_delete_one_entry(): WRITE A0: %x \n", ul_command));
	174
	175	return 0;
	176
	177	}
3c05bedb GKH	178
	179	void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
	180	{
	181	u32 ul_command;
	182	struct rtl_priv *rtlpriv = rtl_priv(hw);
	183
	184	ul_command = BIT(31) \| BIT(30);
	185	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	186	}
3c05bedb GKH	187
	188	void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
	189	{
	190	struct rtl_priv *rtlpriv = rtl_priv(hw);
	191
	192	u32 ul_command;
	193	u32 ul_content;
	194	u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
	195
	196	switch (rtlpriv->sec.pairwise_enc_algorithm) {
	197	case WEP40_ENCRYPTION:
	198	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
	199	break;
	200	case WEP104_ENCRYPTION:
	201	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
	202	break;
	203	case TKIP_ENCRYPTION:
	204	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
	205	break;
	206	case AESCCMP_ENCRYPTION:
	207	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
	208	break;
	209	default:
	210	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
	211	}
	212
	213	ul_content = (uc_index & 3) \| ((u16) (ul_enc_algo) << 2);
	214
	215	ul_content \|= BIT(15);
	216	ul_command = CAM_CONTENT_COUNT * uc_index;
	217	ul_command = ul_command \| BIT(31) \| BIT(16);
	218
	219	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
	220	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	221
	222	RT_TRACE(COMP_SEC, DBG_DMESG,
	223	("rtl_cam_mark_invalid(): WRITE A4: %x \n", ul_content));
	224	RT_TRACE(COMP_SEC, DBG_DMESG,
	225	("rtl_cam_mark_invalid(): WRITE A0: %x \n", ul_command));
	226	}
3c05bedb GKH	227
	228	void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
	229	{
	230	struct rtl_priv *rtlpriv = rtl_priv(hw);
	231
	232	u32 ul_command;
	233	u32 ul_content;
	234	u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
	235	u8 entry_i;
	236
	237	switch (rtlpriv->sec.pairwise_enc_algorithm) {
	238	case WEP40_ENCRYPTION:
	239	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
	240	break;
	241	case WEP104_ENCRYPTION:
	242	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
	243	break;
	244	case TKIP_ENCRYPTION:
	245	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
	246	break;
	247	case AESCCMP_ENCRYPTION:
	248	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
	249	break;
	250	default:
	251	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
	252	}
	253
	254	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
	255
	256	if (entry_i == 0) {
	257	ul_content =
	258	(uc_index & 0x03) \| ((u16) (ul_encalgo) << 2);
	259	ul_content \|= BIT(15);
	260
	261	} else {
	262	ul_content = 0;
	263	}
	264
	265	ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
	266	ul_command = ul_command \| BIT(31) \| BIT(16);
	267
	268	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
	269	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	270
	271	RT_TRACE(COMP_SEC, DBG_LOUD,
	272	("rtl_cam_empty_entry(): WRITE A4: %x \n",
	273	ul_content));
	274	RT_TRACE(COMP_SEC, DBG_LOUD,
	275	("rtl_cam_empty_entry(): WRITE A0: %x \n",
	276	ul_command));
	277	}
	278
	279	}
3c05bedb GKH	280
	281	u8 rtl_cam_get_free_entry(struct ieee80211_hw hw, u8 sta_addr)
	282	{
	283	struct rtl_priv *rtlpriv = rtl_priv(hw);
	284	u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
	285	u8 entry_idx = 0;
	286	u8 i, *addr;
	287
	288	if (NULL == sta_addr) {
	289	RT_TRACE(COMP_SEC, DBG_EMERG,
	290	("sta_addr is NULL.\n"));
	291	return TOTAL_CAM_ENTRY;
	292	}
	293	/* Does STA already exist? */
	294	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
	295	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
	296	if(memcmp(addr, sta_addr, ETH_ALEN) == 0)
	297	return i;
	298	}
	299	/* Get a free CAM entry. */
	300	for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
	301	if ((bitmap & BIT(0)) == 0) {
	302	RT_TRACE(COMP_SEC, DBG_EMERG,
	303	("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
	304	rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
	305	rtlpriv->sec.hwsec_cam_bitmap \|= BIT(0) << entry_idx;
	306	memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
	307	sta_addr, ETH_ALEN);
	308	return entry_idx;
	309	}
	310	bitmap = bitmap >>1;
	311	}
	312	return TOTAL_CAM_ENTRY;
	313	}
3c05bedb GKH	314
	315	void rtl_cam_del_entry(struct ieee80211_hw hw, u8 sta_addr)
	316	{
	317	struct rtl_priv *rtlpriv = rtl_priv(hw);
	318	u32 bitmap;
	319	u8 i, *addr;
	320
	321	if (NULL == sta_addr) {
	322	RT_TRACE(COMP_SEC, DBG_EMERG,
	323	("sta_addr is NULL.\n"));
	324	}
	325
	326	if ((sta_addr[0]\|sta_addr[1]\|sta_addr[2]\|sta_addr[3]\|\
	327	sta_addr[4]\|sta_addr[5]) == 0) {
	328	RT_TRACE(COMP_SEC, DBG_EMERG,
	329	("sta_addr is 00:00:00:00:00:00.\n"));
	330	return;
	331	}
	332	/* Does STA already exist? */
	333	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
	334	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
	335	bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
	336	if (((bitmap & BIT(0)) == BIT(0)) &&
	337	(memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
	338	/* Remove from HW Security CAM */
	339	memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
	340	rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
	341	printk("&&&&&&&&&del entry %d\n",i);
	342	}
	343	}
	344	return;
	345	}