[deliverable/linux.git] / drivers / net / wireless / rtlwifi / cam.c

/******************************************************************************
 *
 * Copyright(c) 2009-2012  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 <linux/export.h>
#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_LOUD,
		 "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_LOUD, "WRITE %x: %x\n",
				 rtlpriv->cfg->maps[WCAMI], target_content);
			RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
				 "The Key ID is %d\n", entry_no);
			RT_TRACE(rtlpriv, 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(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A4: %x\n",
				 target_content);
			RT_TRACE(rtlpriv, 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(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A4: %x\n",
				 target_content);
			RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A0: %x\n",
				 target_command);
		}
	}

	RT_TRACE(rtlpriv, 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(rtlpriv, 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(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,
			      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);

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(rtlpriv, 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(rtlpriv, 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(rtl_cam_get_free_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(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n");
	}

	if (is_zero_ether_addr(sta_addr)) {
		RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
			 "sta_addr is %pM\n", sta_addr);
		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(rtl_cam_del_entry);
Commit	Line	Data
0c817338 LF	1	/******************************************************************************
0c817338 LF	2	*
a8d76066	3	* Copyright(c) 2009-2012 Realtek Corporation.
0c817338 LF	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	*
46a6272c C	26	* Larry Finger <Larry.Finger@lwfinger.net>
46a6272c C	27	*
0c817338 LF	28	*****************************************************************************/
0c817338 LF	29
ee40fa06	30	#include <linux/export.h>
0c817338 LF	31	#include "wifi.h"
	32	#include "cam.h"
	33
	34	void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
	35	{
	36	struct rtl_priv *rtlpriv = rtl_priv(hw);
	37
	38	rtlpriv->sec.use_defaultkey = false;
	39	rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
	40	rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
	41	memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
	42	memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
	43	rtlpriv->sec.pairwise_key = NULL;
	44	}
	45
	46	static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
	47	u8 mac_addr, u8 key_cont_128, u16 us_config)
	48	{
	49	struct rtl_priv *rtlpriv = rtl_priv(hw);
	50
	51	u32 target_command;
	52	u32 target_content = 0;
	53	u8 entry_i;
	54
46a6272c	55	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
f30d7507 JP	56	"key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
	57	key_cont_128[0], key_cont_128[1],
	58	key_cont_128[2], key_cont_128[3],
	59	key_cont_128[4], key_cont_128[5]);
0c817338 LF	60
	61	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
	62	target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
	63	target_command = target_command \| BIT(31) \| BIT(16);
	64
	65	if (entry_i == 0) {
	66	target_content = (u32) (*(mac_addr + 0)) << 16 \|
	67	(u32) (*(mac_addr + 1)) << 24 \| (u32) us_config;
	68
	69	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	70	target_content);
	71	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	72	target_command);
	73
f30d7507 JP	74	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE %x: %x\n",
f30d7507 JP	75	rtlpriv->cfg->maps[WCAMI], target_content);
46a6272c	76	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
f30d7507 JP	77	"The Key ID is %d\n", entry_no);
	78	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE %x: %x\n",
	79	rtlpriv->cfg->maps[RWCAM], target_command);
0c817338 LF	80
	81	} else if (entry_i == 1) {
	82
	83	target_content = (u32) (*(mac_addr + 5)) << 24 \|
	84	(u32) (*(mac_addr + 4)) << 16 \|
	85	(u32) (*(mac_addr + 3)) << 8 \|
	86	(u32) (*(mac_addr + 2));
	87
	88	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	89	target_content);
	90	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	91	target_command);
	92
f30d7507 JP	93	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A4: %x\n",
	94	target_content);
	95	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A0: %x\n",
	96	target_command);
0c817338 LF	97
	98	} else {
	99
	100	target_content =
	101	(u32) ((key_cont_128 + (entry_i 4 - 8) + 3)) <<
	102	24 \| (u32) ((key_cont_128 + (entry_i 4 - 8) + 2))
	103	<< 16 \|
	104	(u32) ((key_cont_128 + (entry_i 4 - 8) + 1)) << 8
	105	\| (u32) ((key_cont_128 + (entry_i 4 - 8) + 0));
	106
	107	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	108	target_content);
	109	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	110	target_command);
	111	udelay(100);
	112
f30d7507 JP	113	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A4: %x\n",
	114	target_content);
	115	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE A0: %x\n",
	116	target_command);
0c817338 LF	117	}
	118	}
	119
f30d7507 JP	120	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "after set key, usconfig:%x\n",
f30d7507 JP	121	us_config);
0c817338 LF	122	}
	123
	124	u8 rtl_cam_add_one_entry(struct ieee80211_hw hw, u8 mac_addr,
	125	u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
	126	u32 ul_default_key, u8 *key_content)
	127	{
	128	u32 us_config;
	129	struct rtl_priv *rtlpriv = rtl_priv(hw);
	130
	131	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
f30d7507 JP	132	"EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, ulUseDK=%x MacAddr %pM\n",
	133	ul_entry_idx, ul_key_id, ul_enc_alg,
	134	ul_default_key, mac_addr);
0c817338 LF	135
	136	if (ul_key_id == TOTAL_CAM_ENTRY) {
	137	RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
f30d7507	138	"<=== ulKeyId exceed!\n");
0c817338 LF	139	return 0;
	140	}
	141
	142	if (ul_default_key == 1) {
	143	us_config = CFG_VALID \| ((u16) (ul_enc_alg) << 2);
	144	} else {
	145	us_config = CFG_VALID \| ((ul_enc_alg) << 2) \| ul_key_id;
	146	}
	147
	148	rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
2c208890	149	key_content, us_config);
0c817338	150
f30d7507	151	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "<===\n");
0c817338 LF	152
	153	return 1;
	154
	155	}
	156	EXPORT_SYMBOL(rtl_cam_add_one_entry);
	157
	158	int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
	159	u8 *mac_addr, u32 ul_key_id)
	160	{
	161	u32 ul_command;
	162	struct rtl_priv *rtlpriv = rtl_priv(hw);
	163
f30d7507	164	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "key_idx:%d\n", ul_key_id);
0c817338 LF	165
	166	ul_command = ul_key_id * CAM_CONTENT_COUNT;
	167	ul_command = ul_command \| BIT(31) \| BIT(16);
	168
	169	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
	170	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	171
	172	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
f30d7507	173	"rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0);
0c817338	174	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
f30d7507	175	"rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command);
0c817338 LF	176
	177	return 0;
	178
	179	}
	180	EXPORT_SYMBOL(rtl_cam_delete_one_entry);
	181
	182	void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
	183	{
	184	u32 ul_command;
	185	struct rtl_priv *rtlpriv = rtl_priv(hw);
	186
	187	ul_command = BIT(31) \| BIT(30);
	188	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	189	}
	190	EXPORT_SYMBOL(rtl_cam_reset_all_entry);
	191
	192	void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
	193	{
	194	struct rtl_priv *rtlpriv = rtl_priv(hw);
	195
	196	u32 ul_command;
	197	u32 ul_content;
	198	u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
	199
	200	switch (rtlpriv->sec.pairwise_enc_algorithm) {
	201	case WEP40_ENCRYPTION:
	202	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
	203	break;
	204	case WEP104_ENCRYPTION:
	205	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
	206	break;
	207	case TKIP_ENCRYPTION:
	208	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
	209	break;
	210	case AESCCMP_ENCRYPTION:
	211	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
	212	break;
	213	default:
	214	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
	215	}
	216
	217	ul_content = (uc_index & 3) \| ((u16) (ul_enc_algo) << 2);
	218
	219	ul_content \|= BIT(15);
	220	ul_command = CAM_CONTENT_COUNT * uc_index;
	221	ul_command = ul_command \| BIT(31) \| BIT(16);
	222
	223	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
	224	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	225
	226	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
f30d7507	227	"rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content);
0c817338	228	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
f30d7507	229	"rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command);
0c817338 LF	230	}
	231	EXPORT_SYMBOL(rtl_cam_mark_invalid);
	232
	233	void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
	234	{
	235	struct rtl_priv *rtlpriv = rtl_priv(hw);
	236
	237	u32 ul_command;
	238	u32 ul_content;
	239	u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
	240	u8 entry_i;
	241
	242	switch (rtlpriv->sec.pairwise_enc_algorithm) {
	243	case WEP40_ENCRYPTION:
	244	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
	245	break;
	246	case WEP104_ENCRYPTION:
	247	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
	248	break;
	249	case TKIP_ENCRYPTION:
	250	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
	251	break;
	252	case AESCCMP_ENCRYPTION:
	253	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
	254	break;
	255	default:
	256	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
	257	}
	258
	259	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
	260
	261	if (entry_i == 0) {
	262	ul_content =
	263	(uc_index & 0x03) \| ((u16) (ul_encalgo) << 2);
	264	ul_content \|= BIT(15);
	265
	266	} else {
	267	ul_content = 0;
	268	}
	269
	270	ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
	271	ul_command = ul_command \| BIT(31) \| BIT(16);
	272
	273	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
	274	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	275
	276	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
f30d7507 JP	277	"rtl_cam_empty_entry(): WRITE A4: %x\n",
f30d7507 JP	278	ul_content);
0c817338	279	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
f30d7507 JP	280	"rtl_cam_empty_entry(): WRITE A0: %x\n",
f30d7507 JP	281	ul_command);
0c817338 LF	282	}
	283
	284	}
	285	EXPORT_SYMBOL(rtl_cam_empty_entry);
46a6272c C	286
	287	u8 rtl_cam_get_free_entry(struct ieee80211_hw hw, u8 sta_addr)
	288	{
	289	struct rtl_priv *rtlpriv = rtl_priv(hw);
	290	u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
	291	u8 entry_idx = 0;
	292	u8 i, *addr;
	293
	294	if (NULL == sta_addr) {
f30d7507	295	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n");
46a6272c C	296	return TOTAL_CAM_ENTRY;
	297	}
	298	/* Does STA already exist? */
	299	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
	300	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
	301	if (memcmp(addr, sta_addr, ETH_ALEN) == 0)
	302	return i;
	303	}
	304	/* Get a free CAM entry. */
	305	for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
	306	if ((bitmap & BIT(0)) == 0) {
	307	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
f30d7507 JP	308	"-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
f30d7507 JP	309	rtlpriv->sec.hwsec_cam_bitmap, entry_idx);
46a6272c C	310	rtlpriv->sec.hwsec_cam_bitmap \|= BIT(0) << entry_idx;
	311	memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
	312	sta_addr, ETH_ALEN);
	313	return entry_idx;
	314	}
	315	bitmap = bitmap >> 1;
	316	}
	317	return TOTAL_CAM_ENTRY;
	318	}
	319	EXPORT_SYMBOL(rtl_cam_get_free_entry);
	320
	321	void rtl_cam_del_entry(struct ieee80211_hw hw, u8 sta_addr)
	322	{
	323	struct rtl_priv *rtlpriv = rtl_priv(hw);
	324	u32 bitmap;
	325	u8 i, *addr;
	326
	327	if (NULL == sta_addr) {
f30d7507	328	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n");
46a6272c C	329	}
46a6272c C	330
68e052d5	331	if (is_zero_ether_addr(sta_addr)) {
46a6272c	332	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
68e052d5	333	"sta_addr is %pM\n", sta_addr);
46a6272c C	334	return;
	335	}
	336	/* Does STA already exist? */
	337	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
	338	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
	339	bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
	340	if (((bitmap & BIT(0)) == BIT(0)) &&
	341	(memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
	342	/* Remove from HW Security CAM */
	343	memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
	344	rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
292b1192	345	pr_info("&&&&&&&&&del entry %d\n", i);
46a6272c C	346	}
	347	}
	348	return;
	349	}
	350	EXPORT_SYMBOL(rtl_cam_del_entry);