[deliverable/linux.git] / drivers / net / wireless / rtlwifi / 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>
 *
 *****************************************************************************/

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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,
			      (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);

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 ((sta_addr[0]|sta_addr[1]|sta_addr[2]|sta_addr[3]|\
				sta_addr[4]|sta_addr[5]) == 0) {
		RT_TRACE(rtlpriv, 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(rtl_cam_del_entry);
Commit	Line	Data
0c817338 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	* 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
292b1192 JP	30	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
292b1192 JP	31
ee40fa06	32	#include <linux/export.h>
0c817338 LF	33	#include "wifi.h"
	34	#include "cam.h"
	35
	36	void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
	37	{
	38	struct rtl_priv *rtlpriv = rtl_priv(hw);
	39
	40	rtlpriv->sec.use_defaultkey = false;
	41	rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
	42	rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
	43	memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
	44	memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
	45	rtlpriv->sec.pairwise_key = NULL;
	46	}
	47
	48	static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
	49	u8 mac_addr, u8 key_cont_128, u16 us_config)
	50	{
	51	struct rtl_priv *rtlpriv = rtl_priv(hw);
	52
	53	u32 target_command;
	54	u32 target_content = 0;
	55	u8 entry_i;
	56
46a6272c	57	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
0c817338 LF	58	("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
	59	key_cont_128[0], key_cont_128[1],
	60	key_cont_128[2], key_cont_128[3],
	61	key_cont_128[4], key_cont_128[5]));
	62
	63	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
	64	target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
	65	target_command = target_command \| BIT(31) \| BIT(16);
	66
	67	if (entry_i == 0) {
	68	target_content = (u32) (*(mac_addr + 0)) << 16 \|
	69	(u32) (*(mac_addr + 1)) << 24 \| (u32) us_config;
	70
	71	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	72	target_content);
	73	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	74	target_command);
	75
46a6272c C	76	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
46a6272c C	77	("WRITE %x: %x\n",
0c817338	78	rtlpriv->cfg->maps[WCAMI], target_content));
46a6272c	79	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
0c817338	80	("The Key ID is %d\n", entry_no));
46a6272c C	81	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
46a6272c C	82	("WRITE %x: %x\n",
0c817338 LF	83	rtlpriv->cfg->maps[RWCAM], target_command));
	84
	85	} else if (entry_i == 1) {
	86
	87	target_content = (u32) (*(mac_addr + 5)) << 24 \|
	88	(u32) (*(mac_addr + 4)) << 16 \|
	89	(u32) (*(mac_addr + 3)) << 8 \|
	90	(u32) (*(mac_addr + 2));
	91
	92	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	93	target_content);
	94	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	95	target_command);
	96
46a6272c C	97	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
	98	("WRITE A4: %x\n", target_content));
	99	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
	100	("WRITE A0: %x\n", target_command));
0c817338 LF	101
	102	} else {
	103
	104	target_content =
	105	(u32) ((key_cont_128 + (entry_i 4 - 8) + 3)) <<
	106	24 \| (u32) ((key_cont_128 + (entry_i 4 - 8) + 2))
	107	<< 16 \|
	108	(u32) ((key_cont_128 + (entry_i 4 - 8) + 1)) << 8
	109	\| (u32) ((key_cont_128 + (entry_i 4 - 8) + 0));
	110
	111	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
	112	target_content);
	113	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
	114	target_command);
	115	udelay(100);
	116
46a6272c C	117	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
	118	("WRITE A4: %x\n", target_content));
	119	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
	120	("WRITE A0: %x\n", target_command));
0c817338 LF	121	}
	122	}
	123
46a6272c	124	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
0c817338 LF	125	("after set key, usconfig:%x\n", us_config));
	126	}
	127
	128	u8 rtl_cam_add_one_entry(struct ieee80211_hw hw, u8 mac_addr,
	129	u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
	130	u32 ul_default_key, u8 *key_content)
	131	{
	132	u32 us_config;
	133	struct rtl_priv *rtlpriv = rtl_priv(hw);
	134
	135	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
	136	("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
1d15b5f2	137	"ulUseDK=%x MacAddr %pM\n",
0c817338	138	ul_entry_idx, ul_key_id, ul_enc_alg,
1d15b5f2	139	ul_default_key, mac_addr));
0c817338 LF	140
	141	if (ul_key_id == TOTAL_CAM_ENTRY) {
	142	RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
	143	("<=== ulKeyId exceed!\n"));
	144	return 0;
	145	}
	146
	147	if (ul_default_key == 1) {
	148	us_config = CFG_VALID \| ((u16) (ul_enc_alg) << 2);
	149	} else {
	150	us_config = CFG_VALID \| ((ul_enc_alg) << 2) \| ul_key_id;
	151	}
	152
	153	rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
	154	(u8 *) key_content, us_config);
	155
	156	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
	157
	158	return 1;
	159
	160	}
	161	EXPORT_SYMBOL(rtl_cam_add_one_entry);
	162
	163	int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
	164	u8 *mac_addr, u32 ul_key_id)
	165	{
	166	u32 ul_command;
	167	struct rtl_priv *rtlpriv = rtl_priv(hw);
	168
	169	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
	170
	171	ul_command = ul_key_id * CAM_CONTENT_COUNT;
	172	ul_command = ul_command \| BIT(31) \| BIT(16);
	173
	174	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
	175	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	176
	177	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
	178	("rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
	179	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
	180	("rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command));
	181
	182	return 0;
	183
	184	}
	185	EXPORT_SYMBOL(rtl_cam_delete_one_entry);
	186
	187	void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
	188	{
	189	u32 ul_command;
	190	struct rtl_priv *rtlpriv = rtl_priv(hw);
	191
	192	ul_command = BIT(31) \| BIT(30);
	193	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
	194	}
	195	EXPORT_SYMBOL(rtl_cam_reset_all_entry);
	196
	197	void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
	198	{
	199	struct rtl_priv *rtlpriv = rtl_priv(hw);
	200
	201	u32 ul_command;
	202	u32 ul_content;
	203	u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
204
205	switch (rtlpriv->sec.pairwise_enc_algorithm) {
206	case WEP40_ENCRYPTION:
207	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
208	break;
209	case WEP104_ENCRYPTION:
210	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
211	break;
212	case TKIP_ENCRYPTION:
213	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
214	break;
215	case AESCCMP_ENCRYPTION:
216	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
217	break;
218	default:
219	ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
220	}
221
222	ul_content = (uc_index & 3) \| ((u16) (ul_enc_algo) << 2);
223
224	ul_content \|= BIT(15);
225	ul_command = CAM_CONTENT_COUNT * uc_index;
226	ul_command = ul_command \| BIT(31) \| BIT(16);
227
228	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
229	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
230
231	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
232	("rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
233	RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
234	("rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
235	}
236	EXPORT_SYMBOL(rtl_cam_mark_invalid);
237
238	void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
239	{
240	struct rtl_priv *rtlpriv = rtl_priv(hw);
241
242	u32 ul_command;
243	u32 ul_content;
244	u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
245	u8 entry_i;
246
247	switch (rtlpriv->sec.pairwise_enc_algorithm) {
248	case WEP40_ENCRYPTION:
249	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
250	break;
251	case WEP104_ENCRYPTION:
252	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
253	break;
254	case TKIP_ENCRYPTION:
255	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
256	break;
257	case AESCCMP_ENCRYPTION:
258	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
259	break;
260	default:
261	ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
262	}
263
264	for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
265
266	if (entry_i == 0) {
267	ul_content =
268	(uc_index & 0x03) \| ((u16) (ul_encalgo) << 2);
269	ul_content \|= BIT(15);
270
271	} else {
272	ul_content = 0;
273	}
274
275	ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
276	ul_command = ul_command \| BIT(31) \| BIT(16);
277
278	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
279	rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
280
281	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
282	("rtl_cam_empty_entry(): WRITE A4: %x\n",
283	ul_content));
284	RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
285	("rtl_cam_empty_entry(): WRITE A0: %x\n",
286	ul_command));
287	}
288
289	}
290	EXPORT_SYMBOL(rtl_cam_empty_entry);
46a6272c C	291
	292	u8 rtl_cam_get_free_entry(struct ieee80211_hw hw, u8 sta_addr)
	293	{
	294	struct rtl_priv *rtlpriv = rtl_priv(hw);
	295	u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
	296	u8 entry_idx = 0;
	297	u8 i, *addr;
	298
	299	if (NULL == sta_addr) {
	300	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
	301	("sta_addr is NULL.\n"));
	302	return TOTAL_CAM_ENTRY;
	303	}
	304	/* Does STA already exist? */
	305	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
	306	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
	307	if (memcmp(addr, sta_addr, ETH_ALEN) == 0)
	308	return i;
	309	}
	310	/* Get a free CAM entry. */
	311	for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
	312	if ((bitmap & BIT(0)) == 0) {
	313	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
	314	("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
	315	rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
	316	rtlpriv->sec.hwsec_cam_bitmap \|= BIT(0) << entry_idx;
	317	memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
	318	sta_addr, ETH_ALEN);
	319	return entry_idx;
	320	}
	321	bitmap = bitmap >> 1;
	322	}
	323	return TOTAL_CAM_ENTRY;
	324	}
	325	EXPORT_SYMBOL(rtl_cam_get_free_entry);
	326
	327	void rtl_cam_del_entry(struct ieee80211_hw hw, u8 sta_addr)
	328	{
	329	struct rtl_priv *rtlpriv = rtl_priv(hw);
	330	u32 bitmap;
	331	u8 i, *addr;
	332
	333	if (NULL == sta_addr) {
	334	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
	335	("sta_addr is NULL.\n"));
	336	}
	337
	338	if ((sta_addr[0]\|sta_addr[1]\|sta_addr[2]\|sta_addr[3]\|\
	339	sta_addr[4]\|sta_addr[5]) == 0) {
	340	RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
	341	("sta_addr is 00:00:00:00:00:00.\n"));
	342	return;
	343	}
	344	/* Does STA already exist? */
	345	for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
	346	addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
	347	bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
	348	if (((bitmap & BIT(0)) == BIT(0)) &&
	349	(memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
	350	/* Remove from HW Security CAM */
	351	memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
	352	rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
292b1192	353	pr_info("&&&&&&&&&del entry %d\n", i);
46a6272c C	354	}
	355	}
	356	return;
	357	}
	358	EXPORT_SYMBOL(rtl_cam_del_entry);