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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 * Larry Finger <Larry.Finger@lwfinger.net>
27 *
28 *****************************************************************************/
29
30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32#include "wifi.h"
33#include "cam.h"
34
35void rtl_cam_reset_sec_info(struct ieee80211_hw *hw)
36{
37 struct rtl_priv *rtlpriv = rtl_priv(hw);
38
39 rtlpriv->sec.use_defaultkey = false;
40 rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
41 rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
42 memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
43 memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
44 rtlpriv->sec.pairwise_key = NULL;
45}
46
47static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
48 u8 *mac_addr, u8 *key_cont_128, u16 us_config)
49{
50 struct rtl_priv *rtlpriv = rtl_priv(hw);
51
52 u32 target_command;
53 u32 target_content = 0;
54 u8 entry_i;
55
56 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
57 ("key_cont_128:\n %x:%x:%x:%x:%x:%x\n",
58 key_cont_128[0], key_cont_128[1],
59 key_cont_128[2], key_cont_128[3],
60 key_cont_128[4], key_cont_128[5]));
61
62 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
63 target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
64 target_command = target_command | BIT(31) | BIT(16);
65
66 if (entry_i == 0) {
67 target_content = (u32) (*(mac_addr + 0)) << 16 |
68 (u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
69
70 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
71 target_content);
72 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
73 target_command);
74
75 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
76 ("WRITE %x: %x\n",
77 rtlpriv->cfg->maps[WCAMI], target_content));
78 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
79 ("The Key ID is %d\n", entry_no));
80 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
81 ("WRITE %x: %x\n",
82 rtlpriv->cfg->maps[RWCAM], target_command));
83
84 } else if (entry_i == 1) {
85
86 target_content = (u32) (*(mac_addr + 5)) << 24 |
87 (u32) (*(mac_addr + 4)) << 16 |
88 (u32) (*(mac_addr + 3)) << 8 |
89 (u32) (*(mac_addr + 2));
90
91 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
92 target_content);
93 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
94 target_command);
95
96 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
97 ("WRITE A4: %x\n", target_content));
98 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
99 ("WRITE A0: %x\n", 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_LOUD,
117 ("WRITE A4: %x\n", target_content));
118 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
119 ("WRITE A0: %x\n", target_command));
120 }
121 }
122
123 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
124 ("after set key, usconfig:%x\n", us_config));
125}
126
127u8 rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
128 u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
129 u32 ul_default_key, u8 *key_content)
130{
131 u32 us_config;
132 struct rtl_priv *rtlpriv = rtl_priv(hw);
133
134 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
135 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, "
136 "ulUseDK=%x MacAddr %pM\n",
137 ul_entry_idx, ul_key_id, ul_enc_alg,
138 ul_default_key, mac_addr));
139
140 if (ul_key_id == TOTAL_CAM_ENTRY) {
141 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
142 ("<=== ulKeyId exceed!\n"));
143 return 0;
144 }
145
146 if (ul_default_key == 1) {
147 us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2);
148 } else {
149 us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
150 }
151
152 rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
153 (u8 *) key_content, us_config);
154
155 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("<===\n"));
156
157 return 1;
158
159}
160EXPORT_SYMBOL(rtl_cam_add_one_entry);
161
162int rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
163 u8 *mac_addr, u32 ul_key_id)
164{
165 u32 ul_command;
166 struct rtl_priv *rtlpriv = rtl_priv(hw);
167
168 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
169
170 ul_command = ul_key_id * CAM_CONTENT_COUNT;
171 ul_command = ul_command | BIT(31) | BIT(16);
172
173 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
174 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
175
176 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
177 ("rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
178 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
179 ("rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command));
180
181 return 0;
182
183}
184EXPORT_SYMBOL(rtl_cam_delete_one_entry);
185
186void rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
187{
188 u32 ul_command;
189 struct rtl_priv *rtlpriv = rtl_priv(hw);
190
191 ul_command = BIT(31) | BIT(30);
192 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
193}
194EXPORT_SYMBOL(rtl_cam_reset_all_entry);
195
196void rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
197{
198 struct rtl_priv *rtlpriv = rtl_priv(hw);
199
200 u32 ul_command;
201 u32 ul_content;
202 u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
203
204 switch (rtlpriv->sec.pairwise_enc_algorithm) {
205 case WEP40_ENCRYPTION:
206 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
207 break;
208 case WEP104_ENCRYPTION:
209 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
210 break;
211 case TKIP_ENCRYPTION:
212 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
213 break;
214 case AESCCMP_ENCRYPTION:
215 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
216 break;
217 default:
218 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
219 }
220
221 ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
222
223 ul_content |= BIT(15);
224 ul_command = CAM_CONTENT_COUNT * uc_index;
225 ul_command = ul_command | BIT(31) | BIT(16);
226
227 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
228 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
229
230 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
231 ("rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
232 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
233 ("rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
234}
235EXPORT_SYMBOL(rtl_cam_mark_invalid);
236
237void rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
238{
239 struct rtl_priv *rtlpriv = rtl_priv(hw);
240
241 u32 ul_command;
242 u32 ul_content;
243 u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
244 u8 entry_i;
245
246 switch (rtlpriv->sec.pairwise_enc_algorithm) {
247 case WEP40_ENCRYPTION:
248 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
249 break;
250 case WEP104_ENCRYPTION:
251 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
252 break;
253 case TKIP_ENCRYPTION:
254 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
255 break;
256 case AESCCMP_ENCRYPTION:
257 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
258 break;
259 default:
260 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
261 }
262
263 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
264
265 if (entry_i == 0) {
266 ul_content =
267 (uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
268 ul_content |= BIT(15);
269
270 } else {
271 ul_content = 0;
272 }
273
274 ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
275 ul_command = ul_command | BIT(31) | BIT(16);
276
277 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
278 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
279
280 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
281 ("rtl_cam_empty_entry(): WRITE A4: %x\n",
282 ul_content));
283 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
284 ("rtl_cam_empty_entry(): WRITE A0: %x\n",
285 ul_command));
286 }
287
288}
289EXPORT_SYMBOL(rtl_cam_empty_entry);
290
291u8 rtl_cam_get_free_entry(struct ieee80211_hw *hw, u8 *sta_addr)
292{
293 struct rtl_priv *rtlpriv = rtl_priv(hw);
294 u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
295 u8 entry_idx = 0;
296 u8 i, *addr;
297
298 if (NULL == sta_addr) {
299 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
300 ("sta_addr is NULL.\n"));
301 return TOTAL_CAM_ENTRY;
302 }
303 /* Does STA already exist? */
304 for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
305 addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
306 if (memcmp(addr, sta_addr, ETH_ALEN) == 0)
307 return i;
308 }
309 /* Get a free CAM entry. */
310 for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
311 if ((bitmap & BIT(0)) == 0) {
312 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
313 ("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
314 rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
315 rtlpriv->sec.hwsec_cam_bitmap |= BIT(0) << entry_idx;
316 memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
317 sta_addr, ETH_ALEN);
318 return entry_idx;
319 }
320 bitmap = bitmap >> 1;
321 }
322 return TOTAL_CAM_ENTRY;
323}
324EXPORT_SYMBOL(rtl_cam_get_free_entry);
325
326void rtl_cam_del_entry(struct ieee80211_hw *hw, u8 *sta_addr)
327{
328 struct rtl_priv *rtlpriv = rtl_priv(hw);
329 u32 bitmap;
330 u8 i, *addr;
331
332 if (NULL == sta_addr) {
333 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
334 ("sta_addr is NULL.\n"));
335 }
336
337 if ((sta_addr[0]|sta_addr[1]|sta_addr[2]|sta_addr[3]|\
338 sta_addr[4]|sta_addr[5]) == 0) {
339 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
340 ("sta_addr is 00:00:00:00:00:00.\n"));
341 return;
342 }
343 /* Does STA already exist? */
344 for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
345 addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
346 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
347 if (((bitmap & BIT(0)) == BIT(0)) &&
348 (memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
349 /* Remove from HW Security CAM */
350 memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
351 rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
352 pr_info("&&&&&&&&&del entry %d\n", i);
353 }
354 }
355 return;
356}
357EXPORT_SYMBOL(rtl_cam_del_entry);
1/******************************************************************************
2 *
3 * Copyright(c) 2009-2012 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 * Larry Finger <Larry.Finger@lwfinger.net>
27 *
28 *****************************************************************************/
29
30#include <linux/export.h>
31#include "wifi.h"
32#include "cam.h"
33
34void 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
46static 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
55 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
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]);
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
74 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "WRITE %x: %x\n",
75 rtlpriv->cfg->maps[WCAMI], target_content);
76 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
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);
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
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);
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
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);
117 }
118 }
119
120 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD, "after set key, usconfig:%x\n",
121 us_config);
122}
123
124u8 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,
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);
135
136 if (ul_key_id == TOTAL_CAM_ENTRY) {
137 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
138 "<=== ulKeyId exceed!\n");
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,
149 (u8 *) key_content, us_config);
150
151 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "<===\n");
152
153 return 1;
154
155}
156EXPORT_SYMBOL(rtl_cam_add_one_entry);
157
158int 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
164 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "key_idx:%d\n", ul_key_id);
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,
173 "rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0);
174 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
175 "rtl_cam_delete_one_entry(): WRITE A0: %x\n", ul_command);
176
177 return 0;
178
179}
180EXPORT_SYMBOL(rtl_cam_delete_one_entry);
181
182void 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}
190EXPORT_SYMBOL(rtl_cam_reset_all_entry);
191
192void 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,
227 "rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content);
228 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
229 "rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command);
230}
231EXPORT_SYMBOL(rtl_cam_mark_invalid);
232
233void 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,
277 "rtl_cam_empty_entry(): WRITE A4: %x\n",
278 ul_content);
279 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
280 "rtl_cam_empty_entry(): WRITE A0: %x\n",
281 ul_command);
282 }
283
284}
285EXPORT_SYMBOL(rtl_cam_empty_entry);
286
287u8 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) {
295 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n");
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,
308 "-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
309 rtlpriv->sec.hwsec_cam_bitmap, entry_idx);
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}
319EXPORT_SYMBOL(rtl_cam_get_free_entry);
320
321void 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) {
328 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG, "sta_addr is NULL\n");
329 }
330
331 if (is_zero_ether_addr(sta_addr)) {
332 RT_TRACE(rtlpriv, COMP_SEC, DBG_EMERG,
333 "sta_addr is %pM\n", sta_addr);
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);
345 pr_info("&&&&&&&&&del entry %d\n", i);
346 }
347 }
348 return;
349}
350EXPORT_SYMBOL(rtl_cam_del_entry);