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Diffstat (limited to 'drivers/net/wireless/rtlwifi/cam.c')
-rw-r--r--drivers/net/wireless/rtlwifi/cam.c291
1 files changed, 291 insertions, 0 deletions
diff --git a/drivers/net/wireless/rtlwifi/cam.c b/drivers/net/wireless/rtlwifi/cam.c
new file mode 100644
index 000000000000..52c9c1367cac
--- /dev/null
+++ b/drivers/net/wireless/rtlwifi/cam.c
@@ -0,0 +1,291 @@
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 *
26 *****************************************************************************/
27
28#include "wifi.h"
29#include "cam.h"
30
31void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
32{
33 struct rtl_priv *rtlpriv = rtl_priv(hw);
34
35 rtlpriv->sec.use_defaultkey = false;
36 rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
37 rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
38 memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
39 memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
40 rtlpriv->sec.pairwise_key = NULL;
41}
42
43static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
44 u8 *mac_addr, u8 *key_cont_128, u16 us_config)
45{
46 struct rtl_priv *rtlpriv = rtl_priv(hw);
47
48 u32 target_command;
49 u32 target_content = 0;
50 u8 entry_i;
51
52 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
53 ("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
54 key_cont_128[0], key_cont_128[1],
55 key_cont_128[2], key_cont_128[3],
56 key_cont_128[4], key_cont_128[5]));
57
58 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
59 target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
60 target_command = target_command | BIT(31) | BIT(16);
61
62 if (entry_i == 0) {
63 target_content = (u32) (*(mac_addr + 0)) << 16 |
64 (u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
65
66 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
67 target_content);
68 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
69 target_command);
70
71 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
72 ("rtl_cam_program_entry(): "
73 "WRITE %x: %x\n",
74 rtlpriv->cfg->maps[WCAMI], target_content));
75 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
76 ("The Key ID is %d\n", entry_no));
77 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
78 ("rtl_cam_program_entry(): "
79 "WRITE %x: %x\n",
80 rtlpriv->cfg->maps[RWCAM], target_command));
81
82 } else if (entry_i == 1) {
83
84 target_content = (u32) (*(mac_addr + 5)) << 24 |
85 (u32) (*(mac_addr + 4)) << 16 |
86 (u32) (*(mac_addr + 3)) << 8 |
87 (u32) (*(mac_addr + 2));
88
89 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
90 target_content);
91 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
92 target_command);
93
94 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
95 ("rtl_cam_program_entry(): WRITE A4: %x\n",
96 target_content));
97 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
98 ("rtl_cam_program_entry(): WRITE A0: %x\n",
99 target_command));
100
101 } else {
102
103 target_content =
104 (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) <<
105 24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2))
106 << 16 |
107 (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8
108 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0));
109
110 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
111 target_content);
112 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
113 target_command);
114 udelay(100);
115
116 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
117 ("rtl_cam_program_entry(): WRITE A4: %x\n",
118 target_content));
119 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
120 ("rtl_cam_program_entry(): WRITE A0: %x\n",
121 target_command));
122 }
123 }
124
125 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
126 ("after set key, usconfig:%x\n", us_config));
127}
128
129u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
130 u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
131 u32 ul_default_key, u8 *key_content)
132{
133 u32 us_config;
134 struct rtl_priv *rtlpriv = rtl_priv(hw);
135
136 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
137 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
138 "ulUseDK=%x MacAddr" MAC_FMT "\n",
139 ul_entry_idx, ul_key_id, ul_enc_alg,
140 ul_default_key, MAC_ARG(mac_addr)));
141
142 if (ul_key_id == TOTAL_CAM_ENTRY) {
143 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
144 ("<=== ulKeyId exceed!\n"));
145 return 0;
146 }
147
148 if (ul_default_key == 1) {
149 us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2);
150 } else {
151 us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
152 }
153
154 rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
155 (u8 *) key_content, us_config);
156
157 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
158
159 return 1;
160
161}
162EXPORT_SYMBOL(rtl_cam_add_one_entry);
163
164int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
165 u8 *mac_addr, u32 ul_key_id)
166{
167 u32 ul_command;
168 struct rtl_priv *rtlpriv = rtl_priv(hw);
169
170 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
171
172 ul_command = ul_key_id * CAM_CONTENT_COUNT;
173 ul_command = ul_command | BIT(31) | BIT(16);
174
175 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
176 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
177
178 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
179 ("rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
180 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
181 ("rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command));
182
183 return 0;
184
185}
186EXPORT_SYMBOL(rtl_cam_delete_one_entry);
187
188void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
189{
190 u32 ul_command;
191 struct rtl_priv *rtlpriv = rtl_priv(hw);
192
193 ul_command = BIT(31) | BIT(30);
194 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
195}
196EXPORT_SYMBOL(rtl_cam_reset_all_entry);
197
198void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
199{
200 struct rtl_priv *rtlpriv = rtl_priv(hw);
201
202 u32 ul_command;
203 u32 ul_content;
204 u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
205
206 switch (rtlpriv->sec.pairwise_enc_algorithm) {
207 case WEP40_ENCRYPTION:
208 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
209 break;
210 case WEP104_ENCRYPTION:
211 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
212 break;
213 case TKIP_ENCRYPTION:
214 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
215 break;
216 case AESCCMP_ENCRYPTION:
217 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
218 break;
219 default:
220 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
221 }
222
223 ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
224
225 ul_content |= BIT(15);
226 ul_command = CAM_CONTENT_COUNT * uc_index;
227 ul_command = ul_command | BIT(31) | BIT(16);
228
229 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
230 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
231
232 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
233 ("rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
234 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
235 ("rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
236}
237EXPORT_SYMBOL(rtl_cam_mark_invalid);
238
239void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
240{
241 struct rtl_priv *rtlpriv = rtl_priv(hw);
242
243 u32 ul_command;
244 u32 ul_content;
245 u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
246 u8 entry_i;
247
248 switch (rtlpriv->sec.pairwise_enc_algorithm) {
249 case WEP40_ENCRYPTION:
250 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
251 break;
252 case WEP104_ENCRYPTION:
253 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
254 break;
255 case TKIP_ENCRYPTION:
256 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
257 break;
258 case AESCCMP_ENCRYPTION:
259 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
260 break;
261 default:
262 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
263 }
264
265 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
266
267 if (entry_i == 0) {
268 ul_content =
269 (uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
270 ul_content |= BIT(15);
271
272 } else {
273 ul_content = 0;
274 }
275
276 ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
277 ul_command = ul_command | BIT(31) | BIT(16);
278
279 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
280 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
281
282 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
283 ("rtl_cam_empty_entry(): WRITE A4: %x\n",
284 ul_content));
285 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
286 ("rtl_cam_empty_entry(): WRITE A0: %x\n",
287 ul_command));
288 }
289
290}
291EXPORT_SYMBOL(rtl_cam_empty_entry);
generated by cgit v1.2.2 (git 2.25.0) at 2025-10-01 22:20:31 -0400