1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright(c) 2008 - 2010 Realtek Corporation. All rights reserved.
4 *
5 * Based on the r8180 driver, which is:
6 * Copyright 2004-2005 Andrea Merello <andrea.merello@gmail.com>, et al.
7 *
8 * Contact Information: wlanfae <wlanfae@realtek.com>
9 */
10 #include "rtl_core.h"
11 #include "r8192E_phy.h"
12 #include "r8192E_phyreg.h"
13 #include "r8190P_rtl8256.h" /* RTL8225 Radio frontend */
14 #include "r8192E_cmdpkt.h"
15
rtl92e_cam_reset(struct net_device * dev)16 void rtl92e_cam_reset(struct net_device *dev)
17 {
18 u32 ulcommand = 0;
19
20 ulcommand |= BIT31 | BIT30;
21 rtl92e_writel(dev, RWCAM, ulcommand);
22 }
23
rtl92e_enable_hw_security_config(struct net_device * dev)24 void rtl92e_enable_hw_security_config(struct net_device *dev)
25 {
26 u8 SECR_value = 0x0;
27 struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
28 struct rtllib_device *ieee = priv->rtllib;
29
30 SECR_value = SCR_TxEncEnable | SCR_RxDecEnable;
31 if (((ieee->pairwise_key_type == KEY_TYPE_WEP40) ||
32 (ieee->pairwise_key_type == KEY_TYPE_WEP104)) &&
33 (priv->rtllib->auth_mode != 2)) {
34 SECR_value |= SCR_RxUseDK;
35 SECR_value |= SCR_TxUseDK;
36 } else if ((ieee->iw_mode == IW_MODE_ADHOC) &&
37 (ieee->pairwise_key_type & (KEY_TYPE_CCMP |
38 KEY_TYPE_TKIP))) {
39 SECR_value |= SCR_RxUseDK;
40 SECR_value |= SCR_TxUseDK;
41 }
42
43 ieee->hwsec_active = 1;
44 if ((ieee->ht_info->iot_action & HT_IOT_ACT_PURE_N_MODE) || !hwwep) {
45 ieee->hwsec_active = 0;
46 SECR_value &= ~SCR_RxDecEnable;
47 }
48 rtl92e_writeb(dev, SECR, SECR_value);
49 }
50
rtl92e_set_swcam(struct net_device * dev,u8 EntryNo,u8 KeyIndex,u16 KeyType,const u8 * MacAddr,u32 * KeyContent)51 void rtl92e_set_swcam(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
52 u16 KeyType, const u8 *MacAddr, u32 *KeyContent)
53 {
54 struct r8192_priv *priv = rtllib_priv(dev);
55 struct rtllib_device *ieee = priv->rtllib;
56
57 if (EntryNo >= TOTAL_CAM_ENTRY)
58 return;
59
60 ieee->swcamtable[EntryNo].bused = true;
61 ieee->swcamtable[EntryNo].key_index = KeyIndex;
62 ieee->swcamtable[EntryNo].key_type = KeyType;
63 memcpy(ieee->swcamtable[EntryNo].macaddr, MacAddr, 6);
64 ieee->swcamtable[EntryNo].useDK = 0;
65 memcpy(ieee->swcamtable[EntryNo].key_buf, (u8 *)KeyContent, 16);
66 }
67
rtl92e_set_key(struct net_device * dev,u8 EntryNo,u8 KeyIndex,u16 KeyType,const u8 * MacAddr,u8 DefaultKey,u32 * KeyContent)68 void rtl92e_set_key(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
69 u16 KeyType, const u8 *MacAddr, u8 DefaultKey,
70 u32 *KeyContent)
71 {
72 u32 TargetCommand = 0;
73 u32 TargetContent = 0;
74 u16 usConfig = 0;
75 u8 i;
76 struct r8192_priv *priv = (struct r8192_priv *)rtllib_priv(dev);
77 enum rt_rf_power_state rt_state;
78
79 rt_state = priv->rtllib->rf_power_state;
80 if (rt_state == rf_off) {
81 if (priv->rtllib->rf_off_reason > RF_CHANGE_BY_IPS) {
82 netdev_warn(dev, "%s(): RF is OFF.\n",
83 __func__);
84 return;
85 }
86 mutex_lock(&priv->rtllib->ips_mutex);
87 rtl92e_ips_leave(dev);
88 mutex_unlock(&priv->rtllib->ips_mutex);
89 }
90 priv->rtllib->is_set_key = true;
91 if (EntryNo >= TOTAL_CAM_ENTRY) {
92 netdev_info(dev, "%s(): Invalid CAM entry\n", __func__);
93 return;
94 }
95
96 if (DefaultKey)
97 usConfig |= BIT15 | (KeyType << 2);
98 else
99 usConfig |= BIT15 | (KeyType << 2) | KeyIndex;
100
101 for (i = 0; i < CAM_CONTENT_COUNT; i++) {
102 TargetCommand = i + CAM_CONTENT_COUNT * EntryNo;
103 TargetCommand |= BIT31 | BIT16;
104
105 if (i == 0) {
106 TargetContent = (u32)(*(MacAddr + 0)) << 16 |
107 (u32)(*(MacAddr + 1)) << 24 |
108 (u32)usConfig;
109
110 rtl92e_writel(dev, WCAMI, TargetContent);
111 rtl92e_writel(dev, RWCAM, TargetCommand);
112 } else if (i == 1) {
113 TargetContent = (u32)(*(MacAddr + 2)) |
114 (u32)(*(MacAddr + 3)) << 8 |
115 (u32)(*(MacAddr + 4)) << 16 |
116 (u32)(*(MacAddr + 5)) << 24;
117 rtl92e_writel(dev, WCAMI, TargetContent);
118 rtl92e_writel(dev, RWCAM, TargetCommand);
119 } else {
120 if (KeyContent != NULL) {
121 rtl92e_writel(dev, WCAMI,
122 (u32)(*(KeyContent + i - 2)));
123 rtl92e_writel(dev, RWCAM, TargetCommand);
124 udelay(100);
125 }
126 }
127 }
128 }
129
rtl92e_cam_restore(struct net_device * dev)130 void rtl92e_cam_restore(struct net_device *dev)
131 {
132 u8 EntryId = 0;
133 struct r8192_priv *priv = rtllib_priv(dev);
134 u8 *MacAddr = priv->rtllib->current_network.bssid;
135
136 static u8 CAM_CONST_ADDR[4][6] = {
137 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
138 {0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
139 {0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
140 {0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
141 };
142 static u8 CAM_CONST_BROAD[] = {
143 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
144 };
145
146 if ((priv->rtllib->pairwise_key_type == KEY_TYPE_WEP40) ||
147 (priv->rtllib->pairwise_key_type == KEY_TYPE_WEP104)) {
148 for (EntryId = 0; EntryId < 4; EntryId++) {
149 MacAddr = CAM_CONST_ADDR[EntryId];
150 if (priv->rtllib->swcamtable[EntryId].bused) {
151 rtl92e_set_key(dev, EntryId, EntryId,
152 priv->rtllib->pairwise_key_type,
153 MacAddr, 0,
154 (u32 *)(&priv->rtllib->swcamtable
155 [EntryId].key_buf[0]));
156 }
157 }
158
159 } else if (priv->rtllib->pairwise_key_type == KEY_TYPE_TKIP) {
160 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
161 rtl92e_set_key(dev, 4, 0,
162 priv->rtllib->pairwise_key_type,
163 (const u8 *)dev->dev_addr, 0,
164 (u32 *)(&priv->rtllib->swcamtable[4].key_buf[0]));
165 } else {
166 rtl92e_set_key(dev, 4, 0,
167 priv->rtllib->pairwise_key_type,
168 MacAddr, 0,
169 (u32 *)(&priv->rtllib->swcamtable[4].key_buf[0]));
170 }
171
172 } else if (priv->rtllib->pairwise_key_type == KEY_TYPE_CCMP) {
173 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
174 rtl92e_set_key(dev, 4, 0,
175 priv->rtllib->pairwise_key_type,
176 (const u8 *)dev->dev_addr, 0,
177 (u32 *)(&priv->rtllib->swcamtable[4].key_buf[0]));
178 } else {
179 rtl92e_set_key(dev, 4, 0,
180 priv->rtllib->pairwise_key_type, MacAddr,
181 0, (u32 *)(&priv->rtllib->swcamtable[4].key_buf[0]));
182 }
183 }
184
185 if (priv->rtllib->group_key_type == KEY_TYPE_TKIP) {
186 MacAddr = CAM_CONST_BROAD;
187 for (EntryId = 1; EntryId < 4; EntryId++) {
188 if (priv->rtllib->swcamtable[EntryId].bused) {
189 rtl92e_set_key(dev, EntryId, EntryId,
190 priv->rtllib->group_key_type,
191 MacAddr, 0,
192 (u32 *)(&priv->rtllib->swcamtable[EntryId].key_buf[0]));
193 }
194 }
195 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
196 if (priv->rtllib->swcamtable[0].bused) {
197 rtl92e_set_key(dev, 0, 0,
198 priv->rtllib->group_key_type,
199 CAM_CONST_ADDR[0], 0,
200 (u32 *)(&priv->rtllib->swcamtable[0].key_buf[0]));
201 } else {
202 netdev_warn(dev,
203 "%s(): ADHOC TKIP: missing key entry.\n",
204 __func__);
205 return;
206 }
207 }
208 } else if (priv->rtllib->group_key_type == KEY_TYPE_CCMP) {
209 MacAddr = CAM_CONST_BROAD;
210 for (EntryId = 1; EntryId < 4; EntryId++) {
211 if (priv->rtllib->swcamtable[EntryId].bused) {
212 rtl92e_set_key(dev, EntryId, EntryId,
213 priv->rtllib->group_key_type,
214 MacAddr, 0,
215 (u32 *)(&priv->rtllib->swcamtable[EntryId].key_buf[0]));
216 }
217 }
218
219 if (priv->rtllib->iw_mode == IW_MODE_ADHOC) {
220 if (priv->rtllib->swcamtable[0].bused) {
221 rtl92e_set_key(dev, 0, 0,
222 priv->rtllib->group_key_type,
223 CAM_CONST_ADDR[0], 0,
224 (u32 *)(&priv->rtllib->swcamtable[0].key_buf[0]));
225 } else {
226 netdev_warn(dev,
227 "%s(): ADHOC CCMP: missing key entry.\n",
228 __func__);
229 return;
230 }
231 }
232 }
233 }
234