[deliverable/linux.git] / drivers / staging / rtl8192ee / 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.
 *
 * 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"

void rtl92e_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 stg_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;
}
EXPORT_SYMBOL(stg_rtl_cam_add_one_entry);

int stg_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,
		 ("stg_rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
	RT_TRACE(COMP_SEC, DBG_DMESG,
		 ("stg_rtl_cam_delete_one_entry(): WRITE A0: %x\n",
		  ul_command));
	return 0;
}
EXPORT_SYMBOL(stg_rtl_cam_delete_one_entry);

void stg_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(stg_rtl_cam_reset_all_entry);

void stg_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,
		 ("stg_rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
	RT_TRACE(COMP_SEC, DBG_DMESG,
		 ("stg_rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
}
EXPORT_SYMBOL(stg_rtl_cam_mark_invalid);

void stg_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,
			 ("stg_rtl_cam_empty_entry(): WRITE A4: %x\n",
			  ul_content));
		RT_TRACE(COMP_SEC, DBG_LOUD,
			 ("stg_rtl_cam_empty_entry(): WRITE A0: %x\n",
			  ul_command));
	}
}
EXPORT_SYMBOL(stg_rtl_cam_empty_entry);

u8 stg_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 (!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;
}
EXPORT_SYMBOL(stg_rtl_cam_get_free_entry);

void stg_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"));
		return;
	}

	if (is_zero_ether_addr(sta_addr)) {
		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);
			pr_info("&&&&&&&&&del entry %d\n", i);
		}
	}
	return;
}
EXPORT_SYMBOL(stg_rtl_cam_del_entry);
Commit	Line	Data
78de2c06 LF	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	* The full GNU General Public License is included in this distribution in the
	15	* file called LICENSE.
	16	*
	17	* Contact Information:
	18	* wlanfae <wlanfae@realtek.com>
	19	* Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
	20	* Hsinchu 300, Taiwan.
	21	*
	22	* Larry Finger <Larry.Finger@lwfinger.net>
	23	*
	24	*****************************************************************************/
	25	#include "wifi.h"
	26	#include "cam.h"
	27
	28	void rtl92e_cam_reset_sec_info(struct ieee80211_hw *hw)
	29	{
	30	struct rtl_priv *rtlpriv = rtl_priv(hw);
	31
	32	rtlpriv->sec.use_defaultkey = false;
	33	rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
	34	rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
	35	memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
	36	memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
	37	rtlpriv->sec.pairwise_key = NULL;
	38	}
	39
	40	static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
	41	u8 mac_addr, u8 key_cont_128, u16 us_config)
	42	{
	43	struct rtl_priv *rtlpriv = rtl_priv(hw);
	44
	45	u32 target_command;
	46	u32 target_content = 0;
	47	u8 entry_i;
	48
	49	RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_DMESG, "Key content:",
	50	key_cont_128, 16);
	51
	52	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
	53	target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
	54	target_command = target_command \| BIT(31) \| BIT(16);
	55
	56	if (entry_i == 0) {
	57	target_content = (u32) (*(mac_addr + 0)) << 16 \|
	58	(u32) (*(mac_addr + 1)) << 24 \| (u32) us_config;
	59
	60	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	61	target_content);
	62	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	63	target_command);
	64
65	RT_TRACE(COMP_SEC, DBG_LOUD,
66	("WRITE %x: %x\n",
67	rtlpriv->cfg->maps[WCAMI], target_content));
68	RT_TRACE(COMP_SEC, DBG_LOUD,
69	("The Key ID is %d\n", entry_no));
70	RT_TRACE(COMP_SEC, DBG_LOUD,
71	("WRITE %x: %x\n",
72	rtlpriv->cfg->maps[RWCAM], target_command));
73	} else if (entry_i == 1) {
74	target_content = (u32) (*(mac_addr + 5)) << 24 \|
75	(u32) (*(mac_addr + 4)) << 16 \|
76	(u32) (*(mac_addr + 3)) << 8 \|
77	(u32) (*(mac_addr + 2));
78
79	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
80	target_content);
81	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
82	target_command);
83
84	RT_TRACE(COMP_SEC, DBG_LOUD,
85	("WRITE A4: %x\n", target_content));
86	RT_TRACE(COMP_SEC, DBG_LOUD,
87	("WRITE A0: %x\n", target_command));
88	} else {
89	target_content =
90	(u32) ((key_cont_128 + (entry_i 4 - 8) + 3)) <<
91	24 \| (u32) ((key_cont_128 + (entry_i 4 - 8) + 2))
92	<< 16 \|
93	(u32) ((key_cont_128 + (entry_i 4 - 8) + 1)) << 8
94	\| (u32) ((key_cont_128 + (entry_i 4 - 8) + 0));
95
96	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
97	target_content);
98	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
99	target_command);
100	udelay(100);
101
102	RT_TRACE(COMP_SEC, DBG_LOUD,
103	("WRITE A4: %x\n", target_content));
104	RT_TRACE(COMP_SEC, DBG_LOUD,
105	("WRITE A0: %x\n", target_command));
106	}
107	}
108
109	RT_TRACE(COMP_SEC, DBG_LOUD,
110	("after set key, usconfig:%x\n", us_config));
111	}
112
113	u8 stg_rtl_cam_add_one_entry(struct ieee80211_hw hw, u8 mac_addr,
114	u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
115	u32 ul_default_key, u8 *key_content)
116	{
117	u32 us_config;
118	struct rtl_priv *rtlpriv = rtl_priv(hw);
119
120	RT_TRACE(COMP_SEC, DBG_DMESG,
121	("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, ulUseDK=%x MacAddr %pM\n",
122	ul_entry_idx, ul_key_id, ul_enc_alg,
123	ul_default_key, mac_addr));
124
125	if (ul_key_id == TOTAL_CAM_ENTRY) {
126	RT_TRACE(COMP_ERR, DBG_WARNING,
127	("ulKeyId exceed!\n"));
128	return 0;
129	}
130
131	if (ul_default_key == 1)
132	us_config = CFG_VALID \| ((u16) (ul_enc_alg) << 2);
133	else
134	us_config = CFG_VALID \| ((ul_enc_alg) << 2) \| ul_key_id;
135
136	rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
137	(u8 *)key_content, us_config);
138
139	RT_TRACE(COMP_SEC, DBG_DMESG, ("end\n"));
140
141	return 1;
142	}
143	EXPORT_SYMBOL(stg_rtl_cam_add_one_entry);
144
145	int stg_rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
146	u8 *mac_addr, u32 ul_key_id)
147	{
148	u32 ul_command;
149	struct rtl_priv *rtlpriv = rtl_priv(hw);
150
151	RT_TRACE(COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
152
153	ul_command = ul_key_id * CAM_CONTENT_COUNT;
154	ul_command = ul_command \| BIT(31) \| BIT(16);
155
156	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
157	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
158
159	RT_TRACE(COMP_SEC, DBG_DMESG,
160	("stg_rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
161	RT_TRACE(COMP_SEC, DBG_DMESG,
162	("stg_rtl_cam_delete_one_entry(): WRITE A0: %x\n",
163	ul_command));
164	return 0;
165	}
166	EXPORT_SYMBOL(stg_rtl_cam_delete_one_entry);
167
168	void stg_rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
169	{
170	u32 ul_command;
171	struct rtl_priv *rtlpriv = rtl_priv(hw);
172
173	ul_command = BIT(31) \| BIT(30);
174	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
175	}
176	EXPORT_SYMBOL(stg_rtl_cam_reset_all_entry);
177
178	void stg_rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
179	{
180	struct rtl_priv *rtlpriv = rtl_priv(hw);
181
182	u32 ul_command;
183	u32 ul_content;
184	u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
185
186	switch (rtlpriv->sec.pairwise_enc_algorithm) {
187	case WEP40_ENCRYPTION:
188	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
189	break;
190	case WEP104_ENCRYPTION:
191	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
192	break;
193	case TKIP_ENCRYPTION:
194	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
195	break;
196	case AESCCMP_ENCRYPTION:
197	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
198	break;
199	default:
200	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
201	}
202
203	ul_content = (uc_index & 3) \| ((u16) (ul_enc_algo) << 2);
204
205	ul_content \|= BIT(15);
206	ul_command = CAM_CONTENT_COUNT * uc_index;
207	ul_command = ul_command \| BIT(31) \| BIT(16);
208
209	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
210	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
211
212	RT_TRACE(COMP_SEC, DBG_DMESG,
213	("stg_rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
214	RT_TRACE(COMP_SEC, DBG_DMESG,
215	("stg_rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
216	}
217	EXPORT_SYMBOL(stg_rtl_cam_mark_invalid);
218
219	void stg_rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
220	{
221	struct rtl_priv *rtlpriv = rtl_priv(hw);
222
223	u32 ul_command;
224	u32 ul_content;
225	u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
226	u8 entry_i;
227
228	switch (rtlpriv->sec.pairwise_enc_algorithm) {
229	case WEP40_ENCRYPTION:
230	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
231	break;
232	case WEP104_ENCRYPTION:
233	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
234	break;
235	case TKIP_ENCRYPTION:
236	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
237	break;
238	case AESCCMP_ENCRYPTION:
239	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
240	break;
241	default:
242	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
243	}
244
245	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
246	if (entry_i == 0) {
247	ul_content =
248	(uc_index & 0x03) \| ((u16) (ul_encalgo) << 2);
249	ul_content \|= BIT(15);
250
251	} else {
252	ul_content = 0;
253	}
254
255	ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
256	ul_command = ul_command \| BIT(31) \| BIT(16);
257
258	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
259	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
260
261	RT_TRACE(COMP_SEC, DBG_LOUD,
262	("stg_rtl_cam_empty_entry(): WRITE A4: %x\n",
263	ul_content));
264	RT_TRACE(COMP_SEC, DBG_LOUD,
265	("stg_rtl_cam_empty_entry(): WRITE A0: %x\n",
266	ul_command));
267	}
268	}
269	EXPORT_SYMBOL(stg_rtl_cam_empty_entry);
270
271	u8 stg_rtl_cam_get_free_entry(struct ieee80211_hw hw, u8 sta_addr)
272	{
273	struct rtl_priv *rtlpriv = rtl_priv(hw);
274	u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
275	u8 entry_idx = 0;
276	u8 i, *addr;
277
278	if (!sta_addr) {
279	RT_TRACE(COMP_SEC, DBG_EMERG,
280	("sta_addr is NULL\n"));
281	return TOTAL_CAM_ENTRY;
282	}
283	/* Does STA already exist? */
284	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
285	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
286	if (memcmp(addr, sta_addr, ETH_ALEN) == 0)
287	return i;
288	}
289	/* Get a free CAM entry. */
290	for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
291	if ((bitmap & BIT(0)) == 0) {
292	RT_TRACE(COMP_SEC, DBG_EMERG,
293	("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
294	rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
295	rtlpriv->sec.hwsec_cam_bitmap \|= BIT(0) << entry_idx;
296	memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
297	sta_addr, ETH_ALEN);
298	return entry_idx;
299	}
300	bitmap = bitmap >> 1;
301	}
302	return TOTAL_CAM_ENTRY;
303	}
304	EXPORT_SYMBOL(stg_rtl_cam_get_free_entry);
305
306	void stg_rtl_cam_del_entry(struct ieee80211_hw hw, u8 sta_addr)
307	{
308	struct rtl_priv *rtlpriv = rtl_priv(hw);
309	u32 bitmap;
310	u8 i, *addr;
311
312	if (NULL == sta_addr) {
313	RT_TRACE(COMP_SEC, DBG_EMERG,
314	("sta_addr is NULL.\n"));
315	return;
316	}
317
318	if (is_zero_ether_addr(sta_addr)) {
319	RT_TRACE(COMP_SEC, DBG_EMERG,
320	("sta_addr is 00:00:00:00:00:00.\n"));
321	return;
322	}
323	/* Does STA already exist? */
324	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
325	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
326	bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
327	if (((bitmap & BIT(0)) == BIT(0)) &&
328	(memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
329	/* Remove from HW Security CAM */
330	memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
331	rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
332	pr_info("&&&&&&&&&del entry %d\n", i);
333	}
334	}
335	return;
336	}
337	EXPORT_SYMBOL(stg_rtl_cam_del_entry);