1 /******************************************************************************
2 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
3 *
4 * Based on the r8180 driver, which is:
5 * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of version 2 of the GNU General Public License as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * The full GNU General Public License is included in this distribution in the
16 * file called LICENSE.
17 *
18 * Contact Information:
19 * wlanfae <wlanfae@realtek.com>
20 *****************************************************************************/
21 #include "rtl_core.h"
22 #include "r8192E_phy.h"
23 #include "r8192E_phyreg.h"
24 #include "r8190P_rtl8256.h" /* RTL8225 Radio frontend */
25 #include "r8192E_cmdpkt.h"
26
rtl92e_cam_reset(struct net_device * dev)27 void rtl92e_cam_reset(struct net_device *dev)
28 {
29 u32 ulcommand = 0;
30
31 ulcommand |= BIT31|BIT30;
32 rtl92e_writel(dev, RWCAM, ulcommand);
33 }
34
rtl92e_enable_hw_security_config(struct net_device * dev)35 void rtl92e_enable_hw_security_config(struct net_device *dev)
36 {
37 u8 SECR_value = 0x0;
38 struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
39 struct rtllib_device *ieee = priv->rtllib;
40
41 SECR_value = SCR_TxEncEnable | SCR_RxDecEnable;
42 if (((ieee->pairwise_key_type == KEY_TYPE_WEP40) ||
43 (ieee->pairwise_key_type == KEY_TYPE_WEP104)) &&
44 (priv->rtllib->auth_mode != 2)) {
45 SECR_value |= SCR_RxUseDK;
46 SECR_value |= SCR_TxUseDK;
47 } else if ((ieee->iw_mode == IW_MODE_ADHOC) &&
48 (ieee->pairwise_key_type & (KEY_TYPE_CCMP |
49 KEY_TYPE_TKIP))) {
50 SECR_value |= SCR_RxUseDK;
51 SECR_value |= SCR_TxUseDK;
52 }
53
54
55 ieee->hwsec_active = 1;
56 if ((ieee->pHTInfo->IOTAction&HT_IOT_ACT_PURE_N_MODE) || !hwwep) {
57 ieee->hwsec_active = 0;
58 SECR_value &= ~SCR_RxDecEnable;
59 }
60
61 RT_TRACE(COMP_SEC, "%s:, hwsec:%d, pairwise_key:%d, SECR_value:%x\n",
62 __func__, ieee->hwsec_active, ieee->pairwise_key_type,
63 SECR_value);
64 rtl92e_writeb(dev, SECR, SECR_value);
65 }
66
rtl92e_set_swcam(struct net_device * dev,u8 EntryNo,u8 KeyIndex,u16 KeyType,const u8 * MacAddr,u8 DefaultKey,u32 * KeyContent,u8 is_mesh)67 void rtl92e_set_swcam(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
68 u16 KeyType, const u8 *MacAddr, u8 DefaultKey,
69 u32 *KeyContent, u8 is_mesh)
70 {
71 struct r8192_priv *priv = rtllib_priv(dev);
72 struct rtllib_device *ieee = priv->rtllib;
73
74 RT_TRACE(COMP_DBG,
75 "===========>%s():EntryNo is %d,KeyIndex is %d,KeyType is %d,is_mesh is %d\n",
76 __func__, EntryNo, KeyIndex, KeyType, is_mesh);
77
78 if (EntryNo >= TOTAL_CAM_ENTRY)
79 return;
80
81 if (!is_mesh) {
82 ieee->swcamtable[EntryNo].bused = true;
83 ieee->swcamtable[EntryNo].key_index = KeyIndex;
84 ieee->swcamtable[EntryNo].key_type = KeyType;
85 memcpy(ieee->swcamtable[EntryNo].macaddr, MacAddr, 6);
86 ieee->swcamtable[EntryNo].useDK = DefaultKey;
87 memcpy(ieee->swcamtable[EntryNo].key_buf, (u8 *)KeyContent, 16);
88 }
89 }
90
rtl92e_set_key(struct net_device * dev,u8 EntryNo,u8 KeyIndex,u16 KeyType,const u8 * MacAddr,u8 DefaultKey,u32 * KeyContent)91 void rtl92e_set_key(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
92 u16 KeyType, const u8 *MacAddr, u8 DefaultKey,
93 u32 *KeyContent)
94 {
95 u32 TargetCommand = 0;
96 u32 TargetContent = 0;
97 u16 usConfig = 0;
98 u8 i;
99 struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
100 enum rt_rf_power_state rtState;
101
102 rtState = priv->rtllib->eRFPowerState;
103 if (priv->rtllib->PowerSaveControl.bInactivePs) {
104 if (rtState == eRfOff) {
105 if (priv->rtllib->RfOffReason > RF_CHANGE_BY_IPS) {
106 netdev_warn(dev, "%s(): RF is OFF.\n",
107 __func__);
108 return;
109 }
110 mutex_lock(&priv->rtllib->ips_mutex);
111 rtl92e_ips_leave(dev);
112 mutex_unlock(&priv->rtllib->ips_mutex);
113 }
114 }
115 priv->rtllib->is_set_key = true;
116 if (EntryNo >= TOTAL_CAM_ENTRY) {
117 netdev_info(dev, "%s(): Invalid CAM entry\n", __func__);
118 return;
119 }
120
121 RT_TRACE(COMP_SEC,
122 "====>to rtl92e_set_key(), dev:%p, EntryNo:%d, KeyIndex:%d,KeyType:%d, MacAddr %pM\n",
123 dev, EntryNo, KeyIndex, KeyType, MacAddr);
124
125 if (DefaultKey)
126 usConfig |= BIT15 | (KeyType<<2);
127 else
128 usConfig |= BIT15 | (KeyType<<2) | KeyIndex;
129
130
131 for (i = 0; i < CAM_CONTENT_COUNT; i++) {
132 TargetCommand = i + CAM_CONTENT_COUNT * EntryNo;
133 TargetCommand |= BIT31|BIT16;
134
135 if (i == 0) {
136 TargetContent = (u32)(*(MacAddr+0)) << 16 |
137 (u32)(*(MacAddr+1)) << 24 |
138 (u32)usConfig;
139
140 rtl92e_writel(dev, WCAMI, TargetContent);
141 rtl92e_writel(dev, RWCAM, TargetCommand);
142 } else if (i == 1) {
143 TargetContent = (u32)(*(MacAddr+2)) |
144 (u32)(*(MacAddr+3)) << 8 |
145 (u32)(*(MacAddr+4)) << 16 |
146 (u32)(*(MacAddr+5)) << 24;
147 rtl92e_writel(dev, WCAMI, TargetContent);
148 rtl92e_writel(dev, RWCAM, TargetCommand);
149 } else {
150 if (KeyContent != NULL) {
151 rtl92e_writel(dev, WCAMI,
152 (u32)(*(KeyContent+i-2)));
153 rtl92e_writel(dev, RWCAM, TargetCommand);
154 udelay(100);
155 }
156 }
157 }
158 RT_TRACE(COMP_SEC, "=========>after set key, usconfig:%x\n", usConfig);
159 }
160
rtl92e_cam_restore(struct net_device * dev)161 void rtl92e_cam_restore(struct net_device *dev)
162 {
163 u8 EntryId = 0;
164 struct r8192_priv *priv = rtllib_priv(dev);
165 u8 *MacAddr = priv->rtllib->current_network.bssid;
166
167 static u8 CAM_CONST_ADDR[4][6] = {
168 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
169 {0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
170 {0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
171 {0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
172 };
173 static u8 CAM_CONST_BROAD[] = {
174 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
175 };
176
177 RT_TRACE(COMP_SEC, "rtl92e_cam_restore:\n");
178
179
180 if ((priv->rtllib->pairwise_key_type == KEY_TYPE_WEP40) ||
181 (priv->rtllib->pairwise_key_type == KEY_TYPE_WEP104)) {
182
183 for (EntryId = 0; EntryId < 4; EntryId++) {
184 MacAddr = CAM_CONST_ADDR[EntryId];
185 if (priv->rtllib->swcamtable[EntryId].bused) {
186 rtl92e_set_key(dev, EntryId, EntryId,
187 priv->rtllib->pairwise_key_type,
188 MacAddr, 0,
189 (u32 *)(&priv->rtllib->swcamtable
190 [EntryId].key_buf[0]));
191 }
192 }
193
194 } else if (priv->rtllib->pairwise_key_type == KEY_TYPE_TKIP) {
195 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
196 rtl92e_set_key(dev, 4, 0,
197 priv->rtllib->pairwise_key_type,
198 (u8 *)dev->dev_addr, 0,
199 (u32 *)(&priv->rtllib->swcamtable[4].
200 key_buf[0]));
201 } else {
202 rtl92e_set_key(dev, 4, 0,
203 priv->rtllib->pairwise_key_type,
204 MacAddr, 0,
205 (u32 *)(&priv->rtllib->swcamtable[4].
206 key_buf[0]));
207 }
208
209 } else if (priv->rtllib->pairwise_key_type == KEY_TYPE_CCMP) {
210 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
211 rtl92e_set_key(dev, 4, 0,
212 priv->rtllib->pairwise_key_type,
213 (u8 *)dev->dev_addr, 0,
214 (u32 *)(&priv->rtllib->swcamtable[4].
215 key_buf[0]));
216 } else {
217 rtl92e_set_key(dev, 4, 0,
218 priv->rtllib->pairwise_key_type, MacAddr,
219 0, (u32 *)(&priv->rtllib->swcamtable[4].
220 key_buf[0]));
221 }
222 }
223
224 if (priv->rtllib->group_key_type == KEY_TYPE_TKIP) {
225 MacAddr = CAM_CONST_BROAD;
226 for (EntryId = 1; EntryId < 4; EntryId++) {
227 if (priv->rtllib->swcamtable[EntryId].bused) {
228 rtl92e_set_key(dev, EntryId, EntryId,
229 priv->rtllib->group_key_type,
230 MacAddr, 0,
231 (u32 *)(&priv->rtllib->swcamtable[EntryId].key_buf[0]));
232 }
233 }
234 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
235 if (priv->rtllib->swcamtable[0].bused) {
236 rtl92e_set_key(dev, 0, 0,
237 priv->rtllib->group_key_type,
238 CAM_CONST_ADDR[0], 0,
239 (u32 *)(&priv->rtllib->swcamtable[0].key_buf[0]));
240 } else {
241 netdev_warn(dev,
242 "%s(): ADHOC TKIP: missing key entry.\n",
243 __func__);
244 return;
245 }
246 }
247 } else if (priv->rtllib->group_key_type == KEY_TYPE_CCMP) {
248 MacAddr = CAM_CONST_BROAD;
249 for (EntryId = 1; EntryId < 4; EntryId++) {
250 if (priv->rtllib->swcamtable[EntryId].bused) {
251 rtl92e_set_key(dev, EntryId, EntryId,
252 priv->rtllib->group_key_type,
253 MacAddr, 0,
254 (u32 *)(&priv->rtllib->swcamtable[EntryId].key_buf[0]));
255 }
256 }
257
258 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
259 if (priv->rtllib->swcamtable[0].bused) {
260 rtl92e_set_key(dev, 0, 0,
261 priv->rtllib->group_key_type,
262 CAM_CONST_ADDR[0], 0,
263 (u32 *)(&priv->rtllib->swcamtable[0].key_buf[0]));
264 } else {
265 netdev_warn(dev,
266 "%s(): ADHOC CCMP: missing key entry.\n",
267 __func__);
268 return;
269 }
270 }
271 }
272 }
273
