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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
[deliverable/linux.git] / drivers / net / wireless / realtek / rtlwifi / rtl8192cu / mac.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2012 Realtek Corporation. All rights reserved.
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 "../wifi.h"
31 #include "../pci.h"
32 #include "../usb.h"
33 #include "../ps.h"
34 #include "../cam.h"
35 #include "../stats.h"
36 #include "reg.h"
37 #include "def.h"
38 #include "phy.h"
39 #include "rf.h"
40 #include "dm.h"
41 #include "mac.h"
42 #include "trx.h"
43 #include "../rtl8192c/fw_common.h"
44
45 #include <linux/module.h>
46
47 /* macro to shorten lines */
48
49 #define LINK_Q ui_link_quality
50 #define RX_EVM rx_evm_percentage
51 #define RX_SIGQ rx_mimo_sig_qual
52
53
54 void rtl92c_read_chip_version(struct ieee80211_hw *hw)
55 {
56 struct rtl_priv *rtlpriv = rtl_priv(hw);
57 struct rtl_phy *rtlphy = &(rtlpriv->phy);
58 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
59 enum version_8192c chip_version = VERSION_UNKNOWN;
60 const char *versionid;
61 u32 value32;
62
63 value32 = rtl_read_dword(rtlpriv, REG_SYS_CFG);
64 if (value32 & TRP_VAUX_EN) {
65 chip_version = (value32 & TYPE_ID) ? VERSION_TEST_CHIP_92C :
66 VERSION_TEST_CHIP_88C;
67 } else {
68 /* Normal mass production chip. */
69 chip_version = NORMAL_CHIP;
70 chip_version |= ((value32 & TYPE_ID) ? CHIP_92C : 0);
71 chip_version |= ((value32 & VENDOR_ID) ? CHIP_VENDOR_UMC : 0);
72 if (IS_VENDOR_UMC(chip_version))
73 chip_version |= ((value32 & CHIP_VER_RTL_MASK) ?
74 CHIP_VENDOR_UMC_B_CUT : 0);
75 if (IS_92C_SERIAL(chip_version)) {
76 value32 = rtl_read_dword(rtlpriv, REG_HPON_FSM);
77 chip_version |= ((CHIP_BONDING_IDENTIFIER(value32) ==
78 CHIP_BONDING_92C_1T2R) ? CHIP_92C_1T2R : 0);
79 }
80 }
81 rtlhal->version = (enum version_8192c)chip_version;
82 pr_info("Chip version 0x%x\n", chip_version);
83 switch (rtlhal->version) {
84 case VERSION_NORMAL_TSMC_CHIP_92C_1T2R:
85 versionid = "NORMAL_B_CHIP_92C";
86 break;
87 case VERSION_NORMAL_TSMC_CHIP_92C:
88 versionid = "NORMAL_TSMC_CHIP_92C";
89 break;
90 case VERSION_NORMAL_TSMC_CHIP_88C:
91 versionid = "NORMAL_TSMC_CHIP_88C";
92 break;
93 case VERSION_NORMAL_UMC_CHIP_92C_1T2R_A_CUT:
94 versionid = "NORMAL_UMC_CHIP_i92C_1T2R_A_CUT";
95 break;
96 case VERSION_NORMAL_UMC_CHIP_92C_A_CUT:
97 versionid = "NORMAL_UMC_CHIP_92C_A_CUT";
98 break;
99 case VERSION_NORMAL_UMC_CHIP_88C_A_CUT:
100 versionid = "NORMAL_UMC_CHIP_88C_A_CUT";
101 break;
102 case VERSION_NORMAL_UMC_CHIP_92C_1T2R_B_CUT:
103 versionid = "NORMAL_UMC_CHIP_92C_1T2R_B_CUT";
104 break;
105 case VERSION_NORMAL_UMC_CHIP_92C_B_CUT:
106 versionid = "NORMAL_UMC_CHIP_92C_B_CUT";
107 break;
108 case VERSION_NORMAL_UMC_CHIP_88C_B_CUT:
109 versionid = "NORMAL_UMC_CHIP_88C_B_CUT";
110 break;
111 case VERSION_TEST_CHIP_92C:
112 versionid = "TEST_CHIP_92C";
113 break;
114 case VERSION_TEST_CHIP_88C:
115 versionid = "TEST_CHIP_88C";
116 break;
117 default:
118 versionid = "UNKNOWN";
119 break;
120 }
121 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
122 "Chip Version ID: %s\n", versionid);
123
124 if (IS_92C_SERIAL(rtlhal->version))
125 rtlphy->rf_type =
126 (IS_92C_1T2R(rtlhal->version)) ? RF_1T2R : RF_2T2R;
127 else
128 rtlphy->rf_type = RF_1T1R;
129 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
130 "Chip RF Type: %s\n",
131 rtlphy->rf_type == RF_2T2R ? "RF_2T2R" : "RF_1T1R");
132 if (get_rf_type(rtlphy) == RF_1T1R)
133 rtlpriv->dm.rfpath_rxenable[0] = true;
134 else
135 rtlpriv->dm.rfpath_rxenable[0] =
136 rtlpriv->dm.rfpath_rxenable[1] = true;
137 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "VersionID = 0x%4x\n",
138 rtlhal->version);
139 }
140
141 /**
142 * writeLLT - LLT table write access
143 * @io: io callback
144 * @address: LLT logical address.
145 * @data: LLT data content
146 *
147 * Realtek hardware access function.
148 *
149 */
150 bool rtl92c_llt_write(struct ieee80211_hw *hw, u32 address, u32 data)
151 {
152 struct rtl_priv *rtlpriv = rtl_priv(hw);
153 bool status = true;
154 long count = 0;
155 u32 value = _LLT_INIT_ADDR(address) |
156 _LLT_INIT_DATA(data) | _LLT_OP(_LLT_WRITE_ACCESS);
157
158 rtl_write_dword(rtlpriv, REG_LLT_INIT, value);
159 do {
160 value = rtl_read_dword(rtlpriv, REG_LLT_INIT);
161 if (_LLT_NO_ACTIVE == _LLT_OP_VALUE(value))
162 break;
163 if (count > POLLING_LLT_THRESHOLD) {
164 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
165 "Failed to polling write LLT done at address %d! _LLT_OP_VALUE(%x)\n",
166 address, _LLT_OP_VALUE(value));
167 status = false;
168 break;
169 }
170 } while (++count);
171 return status;
172 }
173 /**
174 * rtl92c_init_LLT_table - Init LLT table
175 * @io: io callback
176 * @boundary:
177 *
178 * Realtek hardware access function.
179 *
180 */
181 bool rtl92c_init_llt_table(struct ieee80211_hw *hw, u32 boundary)
182 {
183 bool rst = true;
184 u32 i;
185
186 for (i = 0; i < (boundary - 1); i++) {
187 rst = rtl92c_llt_write(hw, i , i + 1);
188 if (true != rst) {
189 pr_err("===> %s #1 fail\n", __func__);
190 return rst;
191 }
192 }
193 /* end of list */
194 rst = rtl92c_llt_write(hw, (boundary - 1), 0xFF);
195 if (true != rst) {
196 pr_err("===> %s #2 fail\n", __func__);
197 return rst;
198 }
199 /* Make the other pages as ring buffer
200 * This ring buffer is used as beacon buffer if we config this MAC
201 * as two MAC transfer.
202 * Otherwise used as local loopback buffer.
203 */
204 for (i = boundary; i < LLT_LAST_ENTRY_OF_TX_PKT_BUFFER; i++) {
205 rst = rtl92c_llt_write(hw, i, (i + 1));
206 if (true != rst) {
207 pr_err("===> %s #3 fail\n", __func__);
208 return rst;
209 }
210 }
211 /* Let last entry point to the start entry of ring buffer */
212 rst = rtl92c_llt_write(hw, LLT_LAST_ENTRY_OF_TX_PKT_BUFFER, boundary);
213 if (true != rst) {
214 pr_err("===> %s #4 fail\n", __func__);
215 return rst;
216 }
217 return rst;
218 }
219 void rtl92c_set_key(struct ieee80211_hw *hw, u32 key_index,
220 u8 *p_macaddr, bool is_group, u8 enc_algo,
221 bool is_wepkey, bool clear_all)
222 {
223 struct rtl_priv *rtlpriv = rtl_priv(hw);
224 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
225 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
226 u8 *macaddr = p_macaddr;
227 u32 entry_id = 0;
228 bool is_pairwise = false;
229 static u8 cam_const_addr[4][6] = {
230 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
231 {0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
232 {0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
233 {0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
234 };
235 static u8 cam_const_broad[] = {
236 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
237 };
238
239 if (clear_all) {
240 u8 idx = 0;
241 u8 cam_offset = 0;
242 u8 clear_number = 5;
243
244 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "clear_all\n");
245 for (idx = 0; idx < clear_number; idx++) {
246 rtl_cam_mark_invalid(hw, cam_offset + idx);
247 rtl_cam_empty_entry(hw, cam_offset + idx);
248 if (idx < 5) {
249 memset(rtlpriv->sec.key_buf[idx], 0,
250 MAX_KEY_LEN);
251 rtlpriv->sec.key_len[idx] = 0;
252 }
253 }
254 } else {
255 switch (enc_algo) {
256 case WEP40_ENCRYPTION:
257 enc_algo = CAM_WEP40;
258 break;
259 case WEP104_ENCRYPTION:
260 enc_algo = CAM_WEP104;
261 break;
262 case TKIP_ENCRYPTION:
263 enc_algo = CAM_TKIP;
264 break;
265 case AESCCMP_ENCRYPTION:
266 enc_algo = CAM_AES;
267 break;
268 default:
269 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
270 "illegal switch case\n");
271 enc_algo = CAM_TKIP;
272 break;
273 }
274 if (is_wepkey || rtlpriv->sec.use_defaultkey) {
275 macaddr = cam_const_addr[key_index];
276 entry_id = key_index;
277 } else {
278 if (is_group) {
279 macaddr = cam_const_broad;
280 entry_id = key_index;
281 } else {
282 if (mac->opmode == NL80211_IFTYPE_AP ||
283 mac->opmode == NL80211_IFTYPE_MESH_POINT) {
284 entry_id = rtl_cam_get_free_entry(hw,
285 p_macaddr);
286 if (entry_id >= TOTAL_CAM_ENTRY) {
287 RT_TRACE(rtlpriv, COMP_SEC,
288 DBG_EMERG,
289 "Can not find free hw security cam entry\n");
290 return;
291 }
292 } else {
293 entry_id = CAM_PAIRWISE_KEY_POSITION;
294 }
295
296 key_index = PAIRWISE_KEYIDX;
297 is_pairwise = true;
298 }
299 }
300 if (rtlpriv->sec.key_len[key_index] == 0) {
301 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
302 "delete one entry\n");
303 if (mac->opmode == NL80211_IFTYPE_AP ||
304 mac->opmode == NL80211_IFTYPE_MESH_POINT)
305 rtl_cam_del_entry(hw, p_macaddr);
306 rtl_cam_delete_one_entry(hw, p_macaddr, entry_id);
307 } else {
308 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
309 "The insert KEY length is %d\n",
310 rtlpriv->sec.key_len[PAIRWISE_KEYIDX]);
311 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
312 "The insert KEY is %x %x\n",
313 rtlpriv->sec.key_buf[0][0],
314 rtlpriv->sec.key_buf[0][1]);
315 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
316 "add one entry\n");
317 if (is_pairwise) {
318 RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_LOUD,
319 "Pairwise Key content",
320 rtlpriv->sec.pairwise_key,
321 rtlpriv->sec.
322 key_len[PAIRWISE_KEYIDX]);
323 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
324 "set Pairwise key\n");
325
326 rtl_cam_add_one_entry(hw, macaddr, key_index,
327 entry_id, enc_algo,
328 CAM_CONFIG_NO_USEDK,
329 rtlpriv->sec.
330 key_buf[key_index]);
331 } else {
332 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
333 "set group key\n");
334 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
335 rtl_cam_add_one_entry(hw,
336 rtlefuse->dev_addr,
337 PAIRWISE_KEYIDX,
338 CAM_PAIRWISE_KEY_POSITION,
339 enc_algo,
340 CAM_CONFIG_NO_USEDK,
341 rtlpriv->sec.key_buf
342 [entry_id]);
343 }
344 rtl_cam_add_one_entry(hw, macaddr, key_index,
345 entry_id, enc_algo,
346 CAM_CONFIG_NO_USEDK,
347 rtlpriv->sec.key_buf[entry_id]);
348 }
349 }
350 }
351 }
352
353 u32 rtl92c_get_txdma_status(struct ieee80211_hw *hw)
354 {
355 struct rtl_priv *rtlpriv = rtl_priv(hw);
356
357 return rtl_read_dword(rtlpriv, REG_TXDMA_STATUS);
358 }
359
360 void rtl92c_enable_interrupt(struct ieee80211_hw *hw)
361 {
362 struct rtl_priv *rtlpriv = rtl_priv(hw);
363 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
364 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
365 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
366
367 if (IS_HARDWARE_TYPE_8192CE(rtlhal)) {
368 rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] &
369 0xFFFFFFFF);
370 rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] &
371 0xFFFFFFFF);
372 } else {
373 rtl_write_dword(rtlpriv, REG_HIMR, rtlusb->irq_mask[0] &
374 0xFFFFFFFF);
375 rtl_write_dword(rtlpriv, REG_HIMRE, rtlusb->irq_mask[1] &
376 0xFFFFFFFF);
377 }
378 }
379
380 void rtl92c_init_interrupt(struct ieee80211_hw *hw)
381 {
382 rtl92c_enable_interrupt(hw);
383 }
384
385 void rtl92c_disable_interrupt(struct ieee80211_hw *hw)
386 {
387 struct rtl_priv *rtlpriv = rtl_priv(hw);
388
389 rtl_write_dword(rtlpriv, REG_HIMR, IMR8190_DISABLED);
390 rtl_write_dword(rtlpriv, REG_HIMRE, IMR8190_DISABLED);
391 }
392
393 void rtl92c_set_qos(struct ieee80211_hw *hw, int aci)
394 {
395 struct rtl_priv *rtlpriv = rtl_priv(hw);
396
397 rtl92c_dm_init_edca_turbo(hw);
398 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AC_PARAM, (u8 *)&aci);
399 }
400
401 void rtl92c_init_driver_info_size(struct ieee80211_hw *hw, u8 size)
402 {
403 struct rtl_priv *rtlpriv = rtl_priv(hw);
404 rtl_write_byte(rtlpriv, REG_RX_DRVINFO_SZ, size);
405 }
406
407 int rtl92c_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type)
408 {
409 u8 value;
410 struct rtl_priv *rtlpriv = rtl_priv(hw);
411
412 switch (type) {
413 case NL80211_IFTYPE_UNSPECIFIED:
414 value = NT_NO_LINK;
415 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
416 "Set Network type to NO LINK!\n");
417 break;
418 case NL80211_IFTYPE_ADHOC:
419 value = NT_LINK_AD_HOC;
420 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
421 "Set Network type to Ad Hoc!\n");
422 break;
423 case NL80211_IFTYPE_STATION:
424 value = NT_LINK_AP;
425 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
426 "Set Network type to STA!\n");
427 break;
428 case NL80211_IFTYPE_AP:
429 value = NT_AS_AP;
430 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
431 "Set Network type to AP!\n");
432 break;
433 default:
434 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
435 "Network type %d not supported!\n", type);
436 return -EOPNOTSUPP;
437 }
438 rtl_write_byte(rtlpriv, MSR, value);
439 return 0;
440 }
441
442 void rtl92c_init_network_type(struct ieee80211_hw *hw)
443 {
444 rtl92c_set_network_type(hw, NL80211_IFTYPE_UNSPECIFIED);
445 }
446
447 void rtl92c_init_adaptive_ctrl(struct ieee80211_hw *hw)
448 {
449 u16 value16;
450 u32 value32;
451 struct rtl_priv *rtlpriv = rtl_priv(hw);
452
453 /* Response Rate Set */
454 value32 = rtl_read_dword(rtlpriv, REG_RRSR);
455 value32 &= ~RATE_BITMAP_ALL;
456 value32 |= RATE_RRSR_CCK_ONLY_1M;
457 rtl_write_dword(rtlpriv, REG_RRSR, value32);
458 /* SIFS (used in NAV) */
459 value16 = _SPEC_SIFS_CCK(0x10) | _SPEC_SIFS_OFDM(0x10);
460 rtl_write_word(rtlpriv, REG_SPEC_SIFS, value16);
461 /* Retry Limit */
462 value16 = _LRL(0x30) | _SRL(0x30);
463 rtl_write_dword(rtlpriv, REG_RL, value16);
464 }
465
466 void rtl92c_init_rate_fallback(struct ieee80211_hw *hw)
467 {
468 struct rtl_priv *rtlpriv = rtl_priv(hw);
469
470 /* Set Data Auto Rate Fallback Retry Count register. */
471 rtl_write_dword(rtlpriv, REG_DARFRC, 0x00000000);
472 rtl_write_dword(rtlpriv, REG_DARFRC+4, 0x10080404);
473 rtl_write_dword(rtlpriv, REG_RARFRC, 0x04030201);
474 rtl_write_dword(rtlpriv, REG_RARFRC+4, 0x08070605);
475 }
476
477 static void rtl92c_set_cck_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
478 u8 ctx_sifs)
479 {
480 struct rtl_priv *rtlpriv = rtl_priv(hw);
481
482 rtl_write_byte(rtlpriv, REG_SIFS_CCK, trx_sifs);
483 rtl_write_byte(rtlpriv, (REG_SIFS_CCK + 1), ctx_sifs);
484 }
485
486 static void rtl92c_set_ofdm_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
487 u8 ctx_sifs)
488 {
489 struct rtl_priv *rtlpriv = rtl_priv(hw);
490
491 rtl_write_byte(rtlpriv, REG_SIFS_OFDM, trx_sifs);
492 rtl_write_byte(rtlpriv, (REG_SIFS_OFDM + 1), ctx_sifs);
493 }
494
495 void rtl92c_init_edca_param(struct ieee80211_hw *hw,
496 u16 queue, u16 txop, u8 cw_min, u8 cw_max, u8 aifs)
497 {
498 /* sequence: VO, VI, BE, BK ==> the same as 92C hardware design.
499 * referenc : enum nl80211_txq_q or ieee80211_set_wmm_default function.
500 */
501 u32 value;
502 struct rtl_priv *rtlpriv = rtl_priv(hw);
503
504 value = (u32)aifs;
505 value |= ((u32)cw_min & 0xF) << 8;
506 value |= ((u32)cw_max & 0xF) << 12;
507 value |= (u32)txop << 16;
508 /* 92C hardware register sequence is the same as queue number. */
509 rtl_write_dword(rtlpriv, (REG_EDCA_VO_PARAM + (queue * 4)), value);
510 }
511
512 void rtl92c_init_edca(struct ieee80211_hw *hw)
513 {
514 u16 value16;
515 struct rtl_priv *rtlpriv = rtl_priv(hw);
516
517 /* disable EDCCA count down, to reduce collison and retry */
518 value16 = rtl_read_word(rtlpriv, REG_RD_CTRL);
519 value16 |= DIS_EDCA_CNT_DWN;
520 rtl_write_word(rtlpriv, REG_RD_CTRL, value16);
521 /* Update SIFS timing. ??????????
522 * pHalData->SifsTime = 0x0e0e0a0a; */
523 rtl92c_set_cck_sifs(hw, 0xa, 0xa);
524 rtl92c_set_ofdm_sifs(hw, 0xe, 0xe);
525 /* Set CCK/OFDM SIFS to be 10us. */
526 rtl_write_word(rtlpriv, REG_SIFS_CCK, 0x0a0a);
527 rtl_write_word(rtlpriv, REG_SIFS_OFDM, 0x1010);
528 rtl_write_word(rtlpriv, REG_PROT_MODE_CTRL, 0x0204);
529 rtl_write_dword(rtlpriv, REG_BAR_MODE_CTRL, 0x014004);
530 /* TXOP */
531 rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, 0x005EA42B);
532 rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, 0x0000A44F);
533 rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, 0x005EA324);
534 rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, 0x002FA226);
535 /* PIFS */
536 rtl_write_byte(rtlpriv, REG_PIFS, 0x1C);
537 /* AGGR BREAK TIME Register */
538 rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
539 rtl_write_word(rtlpriv, REG_NAV_PROT_LEN, 0x0040);
540 rtl_write_byte(rtlpriv, REG_BCNDMATIM, 0x02);
541 rtl_write_byte(rtlpriv, REG_ATIMWND, 0x02);
542 }
543
544 void rtl92c_init_ampdu_aggregation(struct ieee80211_hw *hw)
545 {
546 struct rtl_priv *rtlpriv = rtl_priv(hw);
547
548 rtl_write_dword(rtlpriv, REG_AGGLEN_LMT, 0x99997631);
549 rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
550 /* init AMPDU aggregation number, tuning for Tx's TP, */
551 rtl_write_word(rtlpriv, 0x4CA, 0x0708);
552 }
553
554 void rtl92c_init_beacon_max_error(struct ieee80211_hw *hw)
555 {
556 struct rtl_priv *rtlpriv = rtl_priv(hw);
557
558 rtl_write_byte(rtlpriv, REG_BCN_MAX_ERR, 0xFF);
559 }
560
561 void rtl92c_init_rdg_setting(struct ieee80211_hw *hw)
562 {
563 struct rtl_priv *rtlpriv = rtl_priv(hw);
564
565 rtl_write_byte(rtlpriv, REG_RD_CTRL, 0xFF);
566 rtl_write_word(rtlpriv, REG_RD_NAV_NXT, 0x200);
567 rtl_write_byte(rtlpriv, REG_RD_RESP_PKT_TH, 0x05);
568 }
569
570 void rtl92c_init_retry_function(struct ieee80211_hw *hw)
571 {
572 u8 value8;
573 struct rtl_priv *rtlpriv = rtl_priv(hw);
574
575 value8 = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL);
576 value8 |= EN_AMPDU_RTY_NEW;
577 rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL, value8);
578 /* Set ACK timeout */
579 rtl_write_byte(rtlpriv, REG_ACKTO, 0x40);
580 }
581
582 void rtl92c_disable_fast_edca(struct ieee80211_hw *hw)
583 {
584 struct rtl_priv *rtlpriv = rtl_priv(hw);
585
586 rtl_write_word(rtlpriv, REG_FAST_EDCA_CTRL, 0);
587 }
588
589 void rtl92c_set_min_space(struct ieee80211_hw *hw, bool is2T)
590 {
591 struct rtl_priv *rtlpriv = rtl_priv(hw);
592 u8 value = is2T ? MAX_MSS_DENSITY_2T : MAX_MSS_DENSITY_1T;
593
594 rtl_write_byte(rtlpriv, REG_AMPDU_MIN_SPACE, value);
595 }
596
597 /*==============================================================*/
598
599 static u8 _rtl92c_query_rxpwrpercentage(char antpower)
600 {
601 if ((antpower <= -100) || (antpower >= 20))
602 return 0;
603 else if (antpower >= 0)
604 return 100;
605 else
606 return 100 + antpower;
607 }
608
609 static u8 _rtl92c_evm_db_to_percentage(char value)
610 {
611 char ret_val;
612
613 ret_val = value;
614 if (ret_val >= 0)
615 ret_val = 0;
616 if (ret_val <= -33)
617 ret_val = -33;
618 ret_val = 0 - ret_val;
619 ret_val *= 3;
620 if (ret_val == 99)
621 ret_val = 100;
622 return ret_val;
623 }
624
625 static long _rtl92c_signal_scale_mapping(struct ieee80211_hw *hw,
626 long currsig)
627 {
628 long retsig;
629
630 if (currsig >= 61 && currsig <= 100)
631 retsig = 90 + ((currsig - 60) / 4);
632 else if (currsig >= 41 && currsig <= 60)
633 retsig = 78 + ((currsig - 40) / 2);
634 else if (currsig >= 31 && currsig <= 40)
635 retsig = 66 + (currsig - 30);
636 else if (currsig >= 21 && currsig <= 30)
637 retsig = 54 + (currsig - 20);
638 else if (currsig >= 5 && currsig <= 20)
639 retsig = 42 + (((currsig - 5) * 2) / 3);
640 else if (currsig == 4)
641 retsig = 36;
642 else if (currsig == 3)
643 retsig = 27;
644 else if (currsig == 2)
645 retsig = 18;
646 else if (currsig == 1)
647 retsig = 9;
648 else
649 retsig = currsig;
650 return retsig;
651 }
652
653 static void _rtl92c_query_rxphystatus(struct ieee80211_hw *hw,
654 struct rtl_stats *pstats,
655 struct rx_desc_92c *p_desc,
656 struct rx_fwinfo_92c *p_drvinfo,
657 bool packet_match_bssid,
658 bool packet_toself,
659 bool packet_beacon)
660 {
661 struct rtl_priv *rtlpriv = rtl_priv(hw);
662 struct rtl_phy *rtlphy = &(rtlpriv->phy);
663 struct phy_sts_cck_8192s_t *cck_buf;
664 s8 rx_pwr_all = 0, rx_pwr[4];
665 u8 rf_rx_num = 0, evm, pwdb_all;
666 u8 i, max_spatial_stream;
667 u32 rssi, total_rssi = 0;
668 bool in_powersavemode = false;
669 bool is_cck_rate;
670 u8 *pdesc = (u8 *)p_desc;
671
672 is_cck_rate = RX_HAL_IS_CCK_RATE(p_desc->rxmcs);
673 pstats->packet_matchbssid = packet_match_bssid;
674 pstats->packet_toself = packet_toself;
675 pstats->packet_beacon = packet_beacon;
676 pstats->is_cck = is_cck_rate;
677 pstats->RX_SIGQ[0] = -1;
678 pstats->RX_SIGQ[1] = -1;
679 if (is_cck_rate) {
680 u8 report, cck_highpwr;
681 cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo;
682 if (!in_powersavemode)
683 cck_highpwr = rtlphy->cck_high_power;
684 else
685 cck_highpwr = false;
686 if (!cck_highpwr) {
687 u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
688 report = cck_buf->cck_agc_rpt & 0xc0;
689 report = report >> 6;
690 switch (report) {
691 case 0x3:
692 rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
693 break;
694 case 0x2:
695 rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
696 break;
697 case 0x1:
698 rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
699 break;
700 case 0x0:
701 rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
702 break;
703 }
704 } else {
705 u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
706 report = p_drvinfo->cfosho[0] & 0x60;
707 report = report >> 5;
708 switch (report) {
709 case 0x3:
710 rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1);
711 break;
712 case 0x2:
713 rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1);
714 break;
715 case 0x1:
716 rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1);
717 break;
718 case 0x0:
719 rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1);
720 break;
721 }
722 }
723 pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
724 pstats->rx_pwdb_all = pwdb_all;
725 pstats->recvsignalpower = rx_pwr_all;
726 if (packet_match_bssid) {
727 u8 sq;
728 if (pstats->rx_pwdb_all > 40)
729 sq = 100;
730 else {
731 sq = cck_buf->sq_rpt;
732 if (sq > 64)
733 sq = 0;
734 else if (sq < 20)
735 sq = 100;
736 else
737 sq = ((64 - sq) * 100) / 44;
738 }
739 pstats->signalquality = sq;
740 pstats->RX_SIGQ[0] = sq;
741 pstats->RX_SIGQ[1] = -1;
742 }
743 } else {
744 rtlpriv->dm.rfpath_rxenable[0] =
745 rtlpriv->dm.rfpath_rxenable[1] = true;
746 for (i = RF90_PATH_A; i < RF90_PATH_MAX; i++) {
747 if (rtlpriv->dm.rfpath_rxenable[i])
748 rf_rx_num++;
749 rx_pwr[i] =
750 ((p_drvinfo->gain_trsw[i] & 0x3f) * 2) - 110;
751 rssi = _rtl92c_query_rxpwrpercentage(rx_pwr[i]);
752 total_rssi += rssi;
753 rtlpriv->stats.rx_snr_db[i] =
754 (long)(p_drvinfo->rxsnr[i] / 2);
755
756 if (packet_match_bssid)
757 pstats->rx_mimo_signalstrength[i] = (u8) rssi;
758 }
759 rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110;
760 pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
761 pstats->rx_pwdb_all = pwdb_all;
762 pstats->rxpower = rx_pwr_all;
763 pstats->recvsignalpower = rx_pwr_all;
764 if (GET_RX_DESC_RX_MCS(pdesc) &&
765 GET_RX_DESC_RX_MCS(pdesc) >= DESC_RATEMCS8 &&
766 GET_RX_DESC_RX_MCS(pdesc) <= DESC_RATEMCS15)
767 max_spatial_stream = 2;
768 else
769 max_spatial_stream = 1;
770 for (i = 0; i < max_spatial_stream; i++) {
771 evm = _rtl92c_evm_db_to_percentage(p_drvinfo->rxevm[i]);
772 if (packet_match_bssid) {
773 if (i == 0)
774 pstats->signalquality =
775 (u8) (evm & 0xff);
776 pstats->RX_SIGQ[i] =
777 (u8) (evm & 0xff);
778 }
779 }
780 }
781 if (is_cck_rate)
782 pstats->signalstrength =
783 (u8) (_rtl92c_signal_scale_mapping(hw, pwdb_all));
784 else if (rf_rx_num != 0)
785 pstats->signalstrength =
786 (u8) (_rtl92c_signal_scale_mapping
787 (hw, total_rssi /= rf_rx_num));
788 }
789
790 void rtl92c_translate_rx_signal_stuff(struct ieee80211_hw *hw,
791 struct sk_buff *skb,
792 struct rtl_stats *pstats,
793 struct rx_desc_92c *pdesc,
794 struct rx_fwinfo_92c *p_drvinfo)
795 {
796 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
797 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
798 struct ieee80211_hdr *hdr;
799 u8 *tmp_buf;
800 u8 *praddr;
801 __le16 fc;
802 u16 type, cpu_fc;
803 bool packet_matchbssid, packet_toself, packet_beacon = false;
804
805 tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift;
806 hdr = (struct ieee80211_hdr *)tmp_buf;
807 fc = hdr->frame_control;
808 cpu_fc = le16_to_cpu(fc);
809 type = WLAN_FC_GET_TYPE(fc);
810 praddr = hdr->addr1;
811 packet_matchbssid =
812 ((IEEE80211_FTYPE_CTL != type) &&
813 ether_addr_equal(mac->bssid,
814 (cpu_fc & IEEE80211_FCTL_TODS) ? hdr->addr1 :
815 (cpu_fc & IEEE80211_FCTL_FROMDS) ? hdr->addr2 :
816 hdr->addr3) &&
817 (!pstats->hwerror) && (!pstats->crc) && (!pstats->icv));
818
819 packet_toself = packet_matchbssid &&
820 ether_addr_equal(praddr, rtlefuse->dev_addr);
821 if (ieee80211_is_beacon(fc))
822 packet_beacon = true;
823 _rtl92c_query_rxphystatus(hw, pstats, pdesc, p_drvinfo,
824 packet_matchbssid, packet_toself,
825 packet_beacon);
826 rtl_process_phyinfo(hw, tmp_buf, pstats);
827 }
Linux kernel - Deliverables
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