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25#include "wifi.h"
26#include "cam.h"
27
28void rtl92e_cam_reset_sec_info(struct ieee80211_hw *hw)
29{
30 struct rtl_priv *rtlpriv = rtl_priv(hw);
31
32 rtlpriv->sec.use_defaultkey = false;
33 rtlpriv->sec.pairwise_enc_algorithm = NO_ENCRYPTION;
34 rtlpriv->sec.group_enc_algorithm = NO_ENCRYPTION;
35 memset(rtlpriv->sec.key_buf, 0, KEY_BUF_SIZE * MAX_KEY_LEN);
36 memset(rtlpriv->sec.key_len, 0, KEY_BUF_SIZE);
37 rtlpriv->sec.pairwise_key = NULL;
38}
39
40static void rtl_cam_program_entry(struct ieee80211_hw *hw, u32 entry_no,
41 u8 *mac_addr, u8 *key_cont_128, u16 us_config)
42{
43 struct rtl_priv *rtlpriv = rtl_priv(hw);
44
45 u32 target_command;
46 u32 target_content = 0;
47 u8 entry_i;
48
49 RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_DMESG, "Key content:",
50 key_cont_128, 16);
51
52 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
53 target_command = entry_i + CAM_CONTENT_COUNT * entry_no;
54 target_command = target_command | BIT(31) | BIT(16);
55
56 if (entry_i == 0) {
57 target_content = (u32) (*(mac_addr + 0)) << 16 |
58 (u32) (*(mac_addr + 1)) << 24 | (u32) us_config;
59
60 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
61 target_content);
62 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
63 target_command);
64
65 RT_TRACE(COMP_SEC, DBG_LOUD,
66 ("WRITE %x: %x\n",
67 rtlpriv->cfg->maps[WCAMI], target_content));
68 RT_TRACE(COMP_SEC, DBG_LOUD,
69 ("The Key ID is %d\n", entry_no));
70 RT_TRACE(COMP_SEC, DBG_LOUD,
71 ("WRITE %x: %x\n",
72 rtlpriv->cfg->maps[RWCAM], target_command));
73 } else if (entry_i == 1) {
74 target_content = (u32) (*(mac_addr + 5)) << 24 |
75 (u32) (*(mac_addr + 4)) << 16 |
76 (u32) (*(mac_addr + 3)) << 8 |
77 (u32) (*(mac_addr + 2));
78
79 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
80 target_content);
81 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
82 target_command);
83
84 RT_TRACE(COMP_SEC, DBG_LOUD,
85 ("WRITE A4: %x\n", target_content));
86 RT_TRACE(COMP_SEC, DBG_LOUD,
87 ("WRITE A0: %x\n", target_command));
88 } else {
89 target_content =
90 (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 3)) <<
91 24 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 2))
92 << 16 |
93 (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 1)) << 8
94 | (u32) (*(key_cont_128 + (entry_i * 4 - 8) + 0));
95
96 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI],
97 target_content);
98 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM],
99 target_command);
100 udelay(100);
101
102 RT_TRACE(COMP_SEC, DBG_LOUD,
103 ("WRITE A4: %x\n", target_content));
104 RT_TRACE(COMP_SEC, DBG_LOUD,
105 ("WRITE A0: %x\n", target_command));
106 }
107 }
108
109 RT_TRACE(COMP_SEC, DBG_LOUD,
110 ("after set key, usconfig:%x\n", us_config));
111}
112
113u8 stg_rtl_cam_add_one_entry(struct ieee80211_hw *hw, u8 *mac_addr,
114 u32 ul_key_id, u32 ul_entry_idx, u32 ul_enc_alg,
115 u32 ul_default_key, u8 *key_content)
116{
117 u32 us_config;
118 struct rtl_priv *rtlpriv = rtl_priv(hw);
119
120 RT_TRACE(COMP_SEC, DBG_DMESG,
121 ("EntryNo:%x, ulKeyId=%x, ulEncAlg=%x, ulUseDK=%x MacAddr %pM\n",
122 ul_entry_idx, ul_key_id, ul_enc_alg,
123 ul_default_key, mac_addr));
124
125 if (ul_key_id == TOTAL_CAM_ENTRY) {
126 RT_TRACE(COMP_ERR, DBG_WARNING,
127 ("ulKeyId exceed!\n"));
128 return 0;
129 }
130
131 if (ul_default_key == 1)
132 us_config = CFG_VALID | ((u16) (ul_enc_alg) << 2);
133 else
134 us_config = CFG_VALID | ((ul_enc_alg) << 2) | ul_key_id;
135
136 rtl_cam_program_entry(hw, ul_entry_idx, mac_addr,
137 (u8 *)key_content, us_config);
138
139 RT_TRACE(COMP_SEC, DBG_DMESG, ("end\n"));
140
141 return 1;
142}
143EXPORT_SYMBOL(stg_rtl_cam_add_one_entry);
144
145int stg_rtl_cam_delete_one_entry(struct ieee80211_hw *hw,
146 u8 *mac_addr, u32 ul_key_id)
147{
148 u32 ul_command;
149 struct rtl_priv *rtlpriv = rtl_priv(hw);
150
151 RT_TRACE(COMP_SEC, DBG_DMESG, ("key_idx:%d\n", ul_key_id));
152
153 ul_command = ul_key_id * CAM_CONTENT_COUNT;
154 ul_command = ul_command | BIT(31) | BIT(16);
155
156 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], 0);
157 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
158
159 RT_TRACE(COMP_SEC, DBG_DMESG,
160 ("stg_rtl_cam_delete_one_entry(): WRITE A4: %x\n", 0));
161 RT_TRACE(COMP_SEC, DBG_DMESG,
162 ("stg_rtl_cam_delete_one_entry(): WRITE A0: %x\n",
163 ul_command));
164 return 0;
165}
166EXPORT_SYMBOL(stg_rtl_cam_delete_one_entry);
167
168void stg_rtl_cam_reset_all_entry(struct ieee80211_hw *hw)
169{
170 u32 ul_command;
171 struct rtl_priv *rtlpriv = rtl_priv(hw);
172
173 ul_command = BIT(31) | BIT(30);
174 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
175}
176EXPORT_SYMBOL(stg_rtl_cam_reset_all_entry);
177
178void stg_rtl_cam_mark_invalid(struct ieee80211_hw *hw, u8 uc_index)
179{
180 struct rtl_priv *rtlpriv = rtl_priv(hw);
181
182 u32 ul_command;
183 u32 ul_content;
184 u32 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
185
186 switch (rtlpriv->sec.pairwise_enc_algorithm) {
187 case WEP40_ENCRYPTION:
188 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
189 break;
190 case WEP104_ENCRYPTION:
191 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
192 break;
193 case TKIP_ENCRYPTION:
194 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
195 break;
196 case AESCCMP_ENCRYPTION:
197 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
198 break;
199 default:
200 ul_enc_algo = rtlpriv->cfg->maps[SEC_CAM_AES];
201 }
202
203 ul_content = (uc_index & 3) | ((u16) (ul_enc_algo) << 2);
204
205 ul_content |= BIT(15);
206 ul_command = CAM_CONTENT_COUNT * uc_index;
207 ul_command = ul_command | BIT(31) | BIT(16);
208
209 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
210 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
211
212 RT_TRACE(COMP_SEC, DBG_DMESG,
213 ("stg_rtl_cam_mark_invalid(): WRITE A4: %x\n", ul_content));
214 RT_TRACE(COMP_SEC, DBG_DMESG,
215 ("stg_rtl_cam_mark_invalid(): WRITE A0: %x\n", ul_command));
216}
217EXPORT_SYMBOL(stg_rtl_cam_mark_invalid);
218
219void stg_rtl_cam_empty_entry(struct ieee80211_hw *hw, u8 uc_index)
220{
221 struct rtl_priv *rtlpriv = rtl_priv(hw);
222
223 u32 ul_command;
224 u32 ul_content;
225 u32 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
226 u8 entry_i;
227
228 switch (rtlpriv->sec.pairwise_enc_algorithm) {
229 case WEP40_ENCRYPTION:
230 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP40];
231 break;
232 case WEP104_ENCRYPTION:
233 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_WEP104];
234 break;
235 case TKIP_ENCRYPTION:
236 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_TKIP];
237 break;
238 case AESCCMP_ENCRYPTION:
239 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
240 break;
241 default:
242 ul_encalgo = rtlpriv->cfg->maps[SEC_CAM_AES];
243 }
244
245 for (entry_i = 0; entry_i < CAM_CONTENT_COUNT; entry_i++) {
246 if (entry_i == 0) {
247 ul_content =
248 (uc_index & 0x03) | ((u16) (ul_encalgo) << 2);
249 ul_content |= BIT(15);
250
251 } else {
252 ul_content = 0;
253 }
254
255 ul_command = CAM_CONTENT_COUNT * uc_index + entry_i;
256 ul_command = ul_command | BIT(31) | BIT(16);
257
258 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[WCAMI], ul_content);
259 rtl_write_dword(rtlpriv, rtlpriv->cfg->maps[RWCAM], ul_command);
260
261 RT_TRACE(COMP_SEC, DBG_LOUD,
262 ("stg_rtl_cam_empty_entry(): WRITE A4: %x\n",
263 ul_content));
264 RT_TRACE(COMP_SEC, DBG_LOUD,
265 ("stg_rtl_cam_empty_entry(): WRITE A0: %x\n",
266 ul_command));
267 }
268}
269EXPORT_SYMBOL(stg_rtl_cam_empty_entry);
270
271u8 stg_rtl_cam_get_free_entry(struct ieee80211_hw *hw, u8 *sta_addr)
272{
273 struct rtl_priv *rtlpriv = rtl_priv(hw);
274 u32 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> 4;
275 u8 entry_idx = 0;
276 u8 i, *addr;
277
278 if (!sta_addr) {
279 RT_TRACE(COMP_SEC, DBG_EMERG,
280 ("sta_addr is NULL\n"));
281 return TOTAL_CAM_ENTRY;
282 }
283
284 for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
285 addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
286 if (memcmp(addr, sta_addr, ETH_ALEN) == 0)
287 return i;
288 }
289
290 for (entry_idx = 4; entry_idx < TOTAL_CAM_ENTRY; entry_idx++) {
291 if ((bitmap & BIT(0)) == 0) {
292 RT_TRACE(COMP_SEC, DBG_EMERG,
293 ("-----hwsec_cam_bitmap: 0x%x entry_idx=%d\n",
294 rtlpriv->sec.hwsec_cam_bitmap, entry_idx));
295 rtlpriv->sec.hwsec_cam_bitmap |= BIT(0) << entry_idx;
296 memcpy(rtlpriv->sec.hwsec_cam_sta_addr[entry_idx],
297 sta_addr, ETH_ALEN);
298 return entry_idx;
299 }
300 bitmap = bitmap >> 1;
301 }
302 return TOTAL_CAM_ENTRY;
303}
304EXPORT_SYMBOL(stg_rtl_cam_get_free_entry);
305
306void stg_rtl_cam_del_entry(struct ieee80211_hw *hw, u8 *sta_addr)
307{
308 struct rtl_priv *rtlpriv = rtl_priv(hw);
309 u32 bitmap;
310 u8 i, *addr;
311
312 if (NULL == sta_addr) {
313 RT_TRACE(COMP_SEC, DBG_EMERG,
314 ("sta_addr is NULL.\n"));
315 return;
316 }
317
318 if (is_zero_ether_addr(sta_addr)) {
319 RT_TRACE(COMP_SEC, DBG_EMERG,
320 ("sta_addr is 00:00:00:00:00:00.\n"));
321 return;
322 }
323
324 for (i = 4; i < TOTAL_CAM_ENTRY; i++) {
325 addr = rtlpriv->sec.hwsec_cam_sta_addr[i];
326 bitmap = (rtlpriv->sec.hwsec_cam_bitmap) >> i;
327 if (((bitmap & BIT(0)) == BIT(0)) &&
328 (memcmp(addr, sta_addr, ETH_ALEN) == 0)) {
329
330 memset(rtlpriv->sec.hwsec_cam_sta_addr[i], 0, ETH_ALEN);
331 rtlpriv->sec.hwsec_cam_bitmap &= ~(BIT(0) << i);
332 pr_info("&&&&&&&&&del entry %d\n", i);
333 }
334 }
335 return;
336}
337EXPORT_SYMBOL(stg_rtl_cam_del_entry);
338
