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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / drivers / net / wireless / realtek / rtlwifi / rtl8192cu / mac.c
blob5657b1e34ad09c9350899130c6c4008096afea91
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 * The full GNU General Public License is included in this distribution in the
15 * file called LICENSE.
16 *
17 * Contact Information:
18 * wlanfae <wlanfae@realtek.com>
19 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
20 * Hsinchu 300, Taiwan.
21 *
22 * Larry Finger <Larry.Finger@lwfinger.net>
23 *
24 ****************************************************************************/
25
26 #include "../wifi.h"
27 #include "../pci.h"
28 #include "../usb.h"
29 #include "../ps.h"
30 #include "../cam.h"
31 #include "../stats.h"
32 #include "reg.h"
33 #include "def.h"
34 #include "phy.h"
35 #include "rf.h"
36 #include "dm.h"
37 #include "mac.h"
38 #include "trx.h"
39 #include "../rtl8192c/fw_common.h"
40
41 #include <linux/module.h>
42
43 /* macro to shorten lines */
44
45 #define LINK_Q ui_link_quality
46 #define RX_EVM rx_evm_percentage
47 #define RX_SIGQ rx_mimo_sig_qual
48
49
50 void rtl92c_read_chip_version(struct ieee80211_hw *hw)
51 {
52 struct rtl_priv *rtlpriv = rtl_priv(hw);
53 struct rtl_phy *rtlphy = &(rtlpriv->phy);
54 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
55 enum version_8192c chip_version = VERSION_UNKNOWN;
56 const char *versionid;
57 u32 value32;
58
59 value32 = rtl_read_dword(rtlpriv, REG_SYS_CFG);
60 if (value32 & TRP_VAUX_EN) {
61 chip_version = (value32 & TYPE_ID) ? VERSION_TEST_CHIP_92C :
62 VERSION_TEST_CHIP_88C;
63 } else {
64 /* Normal mass production chip. */
65 chip_version = NORMAL_CHIP;
66 chip_version |= ((value32 & TYPE_ID) ? CHIP_92C : 0);
67 chip_version |= ((value32 & VENDOR_ID) ? CHIP_VENDOR_UMC : 0);
68 if (IS_VENDOR_UMC(chip_version))
69 chip_version |= ((value32 & CHIP_VER_RTL_MASK) ?
70 CHIP_VENDOR_UMC_B_CUT : 0);
71 if (IS_92C_SERIAL(chip_version)) {
72 value32 = rtl_read_dword(rtlpriv, REG_HPON_FSM);
73 chip_version |= ((CHIP_BONDING_IDENTIFIER(value32) ==
74 CHIP_BONDING_92C_1T2R) ? CHIP_92C_1T2R : 0);
75 }
76 }
77 rtlhal->version = (enum version_8192c)chip_version;
78 pr_info("Chip version 0x%x\n", chip_version);
79 switch (rtlhal->version) {
80 case VERSION_NORMAL_TSMC_CHIP_92C_1T2R:
81 versionid = "NORMAL_B_CHIP_92C";
82 break;
83 case VERSION_NORMAL_TSMC_CHIP_92C:
84 versionid = "NORMAL_TSMC_CHIP_92C";
85 break;
86 case VERSION_NORMAL_TSMC_CHIP_88C:
87 versionid = "NORMAL_TSMC_CHIP_88C";
88 break;
89 case VERSION_NORMAL_UMC_CHIP_92C_1T2R_A_CUT:
90 versionid = "NORMAL_UMC_CHIP_i92C_1T2R_A_CUT";
91 break;
92 case VERSION_NORMAL_UMC_CHIP_92C_A_CUT:
93 versionid = "NORMAL_UMC_CHIP_92C_A_CUT";
94 break;
95 case VERSION_NORMAL_UMC_CHIP_88C_A_CUT:
96 versionid = "NORMAL_UMC_CHIP_88C_A_CUT";
97 break;
98 case VERSION_NORMAL_UMC_CHIP_92C_1T2R_B_CUT:
99 versionid = "NORMAL_UMC_CHIP_92C_1T2R_B_CUT";
100 break;
101 case VERSION_NORMAL_UMC_CHIP_92C_B_CUT:
102 versionid = "NORMAL_UMC_CHIP_92C_B_CUT";
103 break;
104 case VERSION_NORMAL_UMC_CHIP_88C_B_CUT:
105 versionid = "NORMAL_UMC_CHIP_88C_B_CUT";
106 break;
107 case VERSION_TEST_CHIP_92C:
108 versionid = "TEST_CHIP_92C";
109 break;
110 case VERSION_TEST_CHIP_88C:
111 versionid = "TEST_CHIP_88C";
112 break;
113 default:
114 versionid = "UNKNOWN";
115 break;
116 }
117 RT_TRACE(rtlpriv, COMP_INIT, DBG_TRACE,
118 "Chip Version ID: %s\n", versionid);
119
120 if (IS_92C_SERIAL(rtlhal->version))
121 rtlphy->rf_type =
122 (IS_92C_1T2R(rtlhal->version)) ? RF_1T2R : RF_2T2R;
123 else
124 rtlphy->rf_type = RF_1T1R;
125 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD,
126 "Chip RF Type: %s\n",
127 rtlphy->rf_type == RF_2T2R ? "RF_2T2R" : "RF_1T1R");
128 if (get_rf_type(rtlphy) == RF_1T1R)
129 rtlpriv->dm.rfpath_rxenable[0] = true;
130 else
131 rtlpriv->dm.rfpath_rxenable[0] =
132 rtlpriv->dm.rfpath_rxenable[1] = true;
133 RT_TRACE(rtlpriv, COMP_INIT, DBG_LOUD, "VersionID = 0x%4x\n",
134 rtlhal->version);
135 }
136
137 /**
138 * writeLLT - LLT table write access
139 * @io: io callback
140 * @address: LLT logical address.
141 * @data: LLT data content
142 *
143 * Realtek hardware access function.
144 *
145 */
146 bool rtl92c_llt_write(struct ieee80211_hw *hw, u32 address, u32 data)
147 {
148 struct rtl_priv *rtlpriv = rtl_priv(hw);
149 bool status = true;
150 long count = 0;
151 u32 value = _LLT_INIT_ADDR(address) |
152 _LLT_INIT_DATA(data) | _LLT_OP(_LLT_WRITE_ACCESS);
153
154 rtl_write_dword(rtlpriv, REG_LLT_INIT, value);
155 do {
156 value = rtl_read_dword(rtlpriv, REG_LLT_INIT);
157 if (_LLT_NO_ACTIVE == _LLT_OP_VALUE(value))
158 break;
159 if (count > POLLING_LLT_THRESHOLD) {
160 pr_err("Failed to polling write LLT done at address %d! _LLT_OP_VALUE(%x)\n",
161 address, _LLT_OP_VALUE(value));
162 status = false;
163 break;
164 }
165 } while (++count);
166 return status;
167 }
168 /**
169 * rtl92c_init_LLT_table - Init LLT table
170 * @io: io callback
171 * @boundary:
172 *
173 * Realtek hardware access function.
174 *
175 */
176 bool rtl92c_init_llt_table(struct ieee80211_hw *hw, u32 boundary)
177 {
178 bool rst = true;
179 u32 i;
180
181 for (i = 0; i < (boundary - 1); i++) {
182 rst = rtl92c_llt_write(hw, i , i + 1);
183 if (true != rst) {
184 pr_err("===> %s #1 fail\n", __func__);
185 return rst;
186 }
187 }
188 /* end of list */
189 rst = rtl92c_llt_write(hw, (boundary - 1), 0xFF);
190 if (true != rst) {
191 pr_err("===> %s #2 fail\n", __func__);
192 return rst;
193 }
194 /* Make the other pages as ring buffer
195 * This ring buffer is used as beacon buffer if we config this MAC
196 * as two MAC transfer.
197 * Otherwise used as local loopback buffer.
198 */
199 for (i = boundary; i < LLT_LAST_ENTRY_OF_TX_PKT_BUFFER; i++) {
200 rst = rtl92c_llt_write(hw, i, (i + 1));
201 if (true != rst) {
202 pr_err("===> %s #3 fail\n", __func__);
203 return rst;
204 }
205 }
206 /* Let last entry point to the start entry of ring buffer */
207 rst = rtl92c_llt_write(hw, LLT_LAST_ENTRY_OF_TX_PKT_BUFFER, boundary);
208 if (true != rst) {
209 pr_err("===> %s #4 fail\n", __func__);
210 return rst;
211 }
212 return rst;
213 }
214 void rtl92c_set_key(struct ieee80211_hw *hw, u32 key_index,
215 u8 *p_macaddr, bool is_group, u8 enc_algo,
216 bool is_wepkey, bool clear_all)
217 {
218 struct rtl_priv *rtlpriv = rtl_priv(hw);
219 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
220 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
221 u8 *macaddr = p_macaddr;
222 u32 entry_id = 0;
223 bool is_pairwise = false;
224 static u8 cam_const_addr[4][6] = {
225 {0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
226 {0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
227 {0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
228 {0x00, 0x00, 0x00, 0x00, 0x00, 0x03}
229 };
230 static u8 cam_const_broad[] = {
231 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
232 };
233
234 if (clear_all) {
235 u8 idx = 0;
236 u8 cam_offset = 0;
237 u8 clear_number = 5;
238
239 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG, "clear_all\n");
240 for (idx = 0; idx < clear_number; idx++) {
241 rtl_cam_mark_invalid(hw, cam_offset + idx);
242 rtl_cam_empty_entry(hw, cam_offset + idx);
243 if (idx < 5) {
244 memset(rtlpriv->sec.key_buf[idx], 0,
245 MAX_KEY_LEN);
246 rtlpriv->sec.key_len[idx] = 0;
247 }
248 }
249 } else {
250 switch (enc_algo) {
251 case WEP40_ENCRYPTION:
252 enc_algo = CAM_WEP40;
253 break;
254 case WEP104_ENCRYPTION:
255 enc_algo = CAM_WEP104;
256 break;
257 case TKIP_ENCRYPTION:
258 enc_algo = CAM_TKIP;
259 break;
260 case AESCCMP_ENCRYPTION:
261 enc_algo = CAM_AES;
262 break;
263 default:
264 pr_err("illegal switch case\n");
265 enc_algo = CAM_TKIP;
266 break;
267 }
268 if (is_wepkey || rtlpriv->sec.use_defaultkey) {
269 macaddr = cam_const_addr[key_index];
270 entry_id = key_index;
271 } else {
272 if (is_group) {
273 macaddr = cam_const_broad;
274 entry_id = key_index;
275 } else {
276 if (mac->opmode == NL80211_IFTYPE_AP ||
277 mac->opmode == NL80211_IFTYPE_MESH_POINT) {
278 entry_id = rtl_cam_get_free_entry(hw,
279 p_macaddr);
280 if (entry_id >= TOTAL_CAM_ENTRY) {
281 pr_err("Can not find free hw security cam entry\n");
282 return;
283 }
284 } else {
285 entry_id = CAM_PAIRWISE_KEY_POSITION;
286 }
287
288 key_index = PAIRWISE_KEYIDX;
289 is_pairwise = true;
290 }
291 }
292 if (rtlpriv->sec.key_len[key_index] == 0) {
293 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
294 "delete one entry\n");
295 if (mac->opmode == NL80211_IFTYPE_AP ||
296 mac->opmode == NL80211_IFTYPE_MESH_POINT)
297 rtl_cam_del_entry(hw, p_macaddr);
298 rtl_cam_delete_one_entry(hw, p_macaddr, entry_id);
299 } else {
300 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
301 "The insert KEY length is %d\n",
302 rtlpriv->sec.key_len[PAIRWISE_KEYIDX]);
303 RT_TRACE(rtlpriv, COMP_SEC, DBG_LOUD,
304 "The insert KEY is %x %x\n",
305 rtlpriv->sec.key_buf[0][0],
306 rtlpriv->sec.key_buf[0][1]);
307 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
308 "add one entry\n");
309 if (is_pairwise) {
310 RT_PRINT_DATA(rtlpriv, COMP_SEC, DBG_LOUD,
311 "Pairwise Key content",
312 rtlpriv->sec.pairwise_key,
313 rtlpriv->sec.
314 key_len[PAIRWISE_KEYIDX]);
315 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
316 "set Pairwise key\n");
317
318 rtl_cam_add_one_entry(hw, macaddr, key_index,
319 entry_id, enc_algo,
320 CAM_CONFIG_NO_USEDK,
321 rtlpriv->sec.
322 key_buf[key_index]);
323 } else {
324 RT_TRACE(rtlpriv, COMP_SEC, DBG_DMESG,
325 "set group key\n");
326 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
327 rtl_cam_add_one_entry(hw,
328 rtlefuse->dev_addr,
329 PAIRWISE_KEYIDX,
330 CAM_PAIRWISE_KEY_POSITION,
331 enc_algo,
332 CAM_CONFIG_NO_USEDK,
333 rtlpriv->sec.key_buf
334 [entry_id]);
335 }
336 rtl_cam_add_one_entry(hw, macaddr, key_index,
337 entry_id, enc_algo,
338 CAM_CONFIG_NO_USEDK,
339 rtlpriv->sec.key_buf[entry_id]);
340 }
341 }
342 }
343 }
344
345 u32 rtl92c_get_txdma_status(struct ieee80211_hw *hw)
346 {
347 struct rtl_priv *rtlpriv = rtl_priv(hw);
348
349 return rtl_read_dword(rtlpriv, REG_TXDMA_STATUS);
350 }
351
352 void rtl92c_enable_interrupt(struct ieee80211_hw *hw)
353 {
354 struct rtl_priv *rtlpriv = rtl_priv(hw);
355 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
356 struct rtl_usb *rtlusb = rtl_usbdev(rtl_usbpriv(hw));
357
358 if (IS_HARDWARE_TYPE_8192CE(rtlpriv)) {
359 rtl_write_dword(rtlpriv, REG_HIMR, rtlpci->irq_mask[0] &
360 0xFFFFFFFF);
361 rtl_write_dword(rtlpriv, REG_HIMRE, rtlpci->irq_mask[1] &
362 0xFFFFFFFF);
363 } else {
364 rtl_write_dword(rtlpriv, REG_HIMR, rtlusb->irq_mask[0] &
365 0xFFFFFFFF);
366 rtl_write_dword(rtlpriv, REG_HIMRE, rtlusb->irq_mask[1] &
367 0xFFFFFFFF);
368 }
369 }
370
371 void rtl92c_init_interrupt(struct ieee80211_hw *hw)
372 {
373 rtl92c_enable_interrupt(hw);
374 }
375
376 void rtl92c_disable_interrupt(struct ieee80211_hw *hw)
377 {
378 struct rtl_priv *rtlpriv = rtl_priv(hw);
379
380 rtl_write_dword(rtlpriv, REG_HIMR, IMR8190_DISABLED);
381 rtl_write_dword(rtlpriv, REG_HIMRE, IMR8190_DISABLED);
382 }
383
384 void rtl92c_set_qos(struct ieee80211_hw *hw, int aci)
385 {
386 struct rtl_priv *rtlpriv = rtl_priv(hw);
387
388 rtl92c_dm_init_edca_turbo(hw);
389 rtlpriv->cfg->ops->set_hw_reg(hw, HW_VAR_AC_PARAM, (u8 *)&aci);
390 }
391
392 void rtl92c_init_driver_info_size(struct ieee80211_hw *hw, u8 size)
393 {
394 struct rtl_priv *rtlpriv = rtl_priv(hw);
395 rtl_write_byte(rtlpriv, REG_RX_DRVINFO_SZ, size);
396 }
397
398 int rtl92c_set_network_type(struct ieee80211_hw *hw, enum nl80211_iftype type)
399 {
400 u8 value;
401 struct rtl_priv *rtlpriv = rtl_priv(hw);
402
403 switch (type) {
404 case NL80211_IFTYPE_UNSPECIFIED:
405 value = NT_NO_LINK;
406 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
407 "Set Network type to NO LINK!\n");
408 break;
409 case NL80211_IFTYPE_ADHOC:
410 value = NT_LINK_AD_HOC;
411 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
412 "Set Network type to Ad Hoc!\n");
413 break;
414 case NL80211_IFTYPE_STATION:
415 value = NT_LINK_AP;
416 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
417 "Set Network type to STA!\n");
418 break;
419 case NL80211_IFTYPE_AP:
420 value = NT_AS_AP;
421 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
422 "Set Network type to AP!\n");
423 break;
424 default:
425 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
426 "Network type %d not supported!\n", type);
427 return -EOPNOTSUPP;
428 }
429 rtl_write_byte(rtlpriv, MSR, value);
430 return 0;
431 }
432
433 void rtl92c_init_network_type(struct ieee80211_hw *hw)
434 {
435 rtl92c_set_network_type(hw, NL80211_IFTYPE_UNSPECIFIED);
436 }
437
438 void rtl92c_init_adaptive_ctrl(struct ieee80211_hw *hw)
439 {
440 u16 value16;
441 u32 value32;
442 struct rtl_priv *rtlpriv = rtl_priv(hw);
443
444 /* Response Rate Set */
445 value32 = rtl_read_dword(rtlpriv, REG_RRSR);
446 value32 &= ~RATE_BITMAP_ALL;
447 value32 |= RATE_RRSR_CCK_ONLY_1M;
448 rtl_write_dword(rtlpriv, REG_RRSR, value32);
449 /* SIFS (used in NAV) */
450 value16 = _SPEC_SIFS_CCK(0x10) | _SPEC_SIFS_OFDM(0x10);
451 rtl_write_word(rtlpriv, REG_SPEC_SIFS, value16);
452 /* Retry Limit */
453 value16 = _LRL(0x30) | _SRL(0x30);
454 rtl_write_dword(rtlpriv, REG_RL, value16);
455 }
456
457 void rtl92c_init_rate_fallback(struct ieee80211_hw *hw)
458 {
459 struct rtl_priv *rtlpriv = rtl_priv(hw);
460
461 /* Set Data Auto Rate Fallback Retry Count register. */
462 rtl_write_dword(rtlpriv, REG_DARFRC, 0x00000000);
463 rtl_write_dword(rtlpriv, REG_DARFRC+4, 0x10080404);
464 rtl_write_dword(rtlpriv, REG_RARFRC, 0x04030201);
465 rtl_write_dword(rtlpriv, REG_RARFRC+4, 0x08070605);
466 }
467
468 static void rtl92c_set_cck_sifs(struct ieee80211_hw *hw, u8 trx_sifs,
469 u8 ctx_sifs)
470 {
471 struct rtl_priv *rtlpriv = rtl_priv(hw);
472
473 rtl_write_byte(rtlpriv, REG_SIFS_CCK, trx_sifs);
474 rtl_write_byte(rtlpriv, (REG_SIFS_CCK + 1), ctx_sifs);
475 }
476
477 static void rtl92c_set_ofdm_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_OFDM, trx_sifs);
483 rtl_write_byte(rtlpriv, (REG_SIFS_OFDM + 1), ctx_sifs);
484 }
485
486 void rtl92c_init_edca_param(struct ieee80211_hw *hw,
487 u16 queue, u16 txop, u8 cw_min, u8 cw_max, u8 aifs)
488 {
489 /* sequence: VO, VI, BE, BK ==> the same as 92C hardware design.
490 * referenc : enum nl80211_txq_q or ieee80211_set_wmm_default function.
491 */
492 u32 value;
493 struct rtl_priv *rtlpriv = rtl_priv(hw);
494
495 value = (u32)aifs;
496 value |= ((u32)cw_min & 0xF) << 8;
497 value |= ((u32)cw_max & 0xF) << 12;
498 value |= (u32)txop << 16;
499 /* 92C hardware register sequence is the same as queue number. */
500 rtl_write_dword(rtlpriv, (REG_EDCA_VO_PARAM + (queue * 4)), value);
501 }
502
503 void rtl92c_init_edca(struct ieee80211_hw *hw)
504 {
505 u16 value16;
506 struct rtl_priv *rtlpriv = rtl_priv(hw);
507
508 /* disable EDCCA count down, to reduce collison and retry */
509 value16 = rtl_read_word(rtlpriv, REG_RD_CTRL);
510 value16 |= DIS_EDCA_CNT_DWN;
511 rtl_write_word(rtlpriv, REG_RD_CTRL, value16);
512 /* Update SIFS timing. ??????????
513 * pHalData->SifsTime = 0x0e0e0a0a; */
514 rtl92c_set_cck_sifs(hw, 0xa, 0xa);
515 rtl92c_set_ofdm_sifs(hw, 0xe, 0xe);
516 /* Set CCK/OFDM SIFS to be 10us. */
517 rtl_write_word(rtlpriv, REG_SIFS_CCK, 0x0a0a);
518 rtl_write_word(rtlpriv, REG_SIFS_OFDM, 0x1010);
519 rtl_write_word(rtlpriv, REG_PROT_MODE_CTRL, 0x0204);
520 rtl_write_dword(rtlpriv, REG_BAR_MODE_CTRL, 0x014004);
521 /* TXOP */
522 rtl_write_dword(rtlpriv, REG_EDCA_BE_PARAM, 0x005EA42B);
523 rtl_write_dword(rtlpriv, REG_EDCA_BK_PARAM, 0x0000A44F);
524 rtl_write_dword(rtlpriv, REG_EDCA_VI_PARAM, 0x005EA324);
525 rtl_write_dword(rtlpriv, REG_EDCA_VO_PARAM, 0x002FA226);
526 /* PIFS */
527 rtl_write_byte(rtlpriv, REG_PIFS, 0x1C);
528 /* AGGR BREAK TIME Register */
529 rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
530 rtl_write_word(rtlpriv, REG_NAV_PROT_LEN, 0x0040);
531 rtl_write_byte(rtlpriv, REG_BCNDMATIM, 0x02);
532 rtl_write_byte(rtlpriv, REG_ATIMWND, 0x02);
533 }
534
535 void rtl92c_init_ampdu_aggregation(struct ieee80211_hw *hw)
536 {
537 struct rtl_priv *rtlpriv = rtl_priv(hw);
538
539 rtl_write_dword(rtlpriv, REG_AGGLEN_LMT, 0x99997631);
540 rtl_write_byte(rtlpriv, REG_AGGR_BREAK_TIME, 0x16);
541 /* init AMPDU aggregation number, tuning for Tx's TP, */
542 rtl_write_word(rtlpriv, 0x4CA, 0x0708);
543 }
544
545 void rtl92c_init_beacon_max_error(struct ieee80211_hw *hw)
546 {
547 struct rtl_priv *rtlpriv = rtl_priv(hw);
548
549 rtl_write_byte(rtlpriv, REG_BCN_MAX_ERR, 0xFF);
550 }
551
552 void rtl92c_init_rdg_setting(struct ieee80211_hw *hw)
553 {
554 struct rtl_priv *rtlpriv = rtl_priv(hw);
555
556 rtl_write_byte(rtlpriv, REG_RD_CTRL, 0xFF);
557 rtl_write_word(rtlpriv, REG_RD_NAV_NXT, 0x200);
558 rtl_write_byte(rtlpriv, REG_RD_RESP_PKT_TH, 0x05);
559 }
560
561 void rtl92c_init_retry_function(struct ieee80211_hw *hw)
562 {
563 u8 value8;
564 struct rtl_priv *rtlpriv = rtl_priv(hw);
565
566 value8 = rtl_read_byte(rtlpriv, REG_FWHW_TXQ_CTRL);
567 value8 |= EN_AMPDU_RTY_NEW;
568 rtl_write_byte(rtlpriv, REG_FWHW_TXQ_CTRL, value8);
569 /* Set ACK timeout */
570 rtl_write_byte(rtlpriv, REG_ACKTO, 0x40);
571 }
572
573 void rtl92c_disable_fast_edca(struct ieee80211_hw *hw)
574 {
575 struct rtl_priv *rtlpriv = rtl_priv(hw);
576
577 rtl_write_word(rtlpriv, REG_FAST_EDCA_CTRL, 0);
578 }
579
580 void rtl92c_set_min_space(struct ieee80211_hw *hw, bool is2T)
581 {
582 struct rtl_priv *rtlpriv = rtl_priv(hw);
583 u8 value = is2T ? MAX_MSS_DENSITY_2T : MAX_MSS_DENSITY_1T;
584
585 rtl_write_byte(rtlpriv, REG_AMPDU_MIN_SPACE, value);
586 }
587
588 /*==============================================================*/
589
590 static u8 _rtl92c_query_rxpwrpercentage(s8 antpower)
591 {
592 if ((antpower <= -100) || (antpower >= 20))
593 return 0;
594 else if (antpower >= 0)
595 return 100;
596 else
597 return 100 + antpower;
598 }
599
600 static u8 _rtl92c_evm_db_to_percentage(s8 value)
601 {
602 s8 ret_val;
603
604 ret_val = value;
605 if (ret_val >= 0)
606 ret_val = 0;
607 if (ret_val <= -33)
608 ret_val = -33;
609 ret_val = 0 - ret_val;
610 ret_val *= 3;
611 if (ret_val == 99)
612 ret_val = 100;
613 return ret_val;
614 }
615
616 static long _rtl92c_signal_scale_mapping(struct ieee80211_hw *hw,
617 long currsig)
618 {
619 long retsig;
620
621 if (currsig >= 61 && currsig <= 100)
622 retsig = 90 + ((currsig - 60) / 4);
623 else if (currsig >= 41 && currsig <= 60)
624 retsig = 78 + ((currsig - 40) / 2);
625 else if (currsig >= 31 && currsig <= 40)
626 retsig = 66 + (currsig - 30);
627 else if (currsig >= 21 && currsig <= 30)
628 retsig = 54 + (currsig - 20);
629 else if (currsig >= 5 && currsig <= 20)
630 retsig = 42 + (((currsig - 5) * 2) / 3);
631 else if (currsig == 4)
632 retsig = 36;
633 else if (currsig == 3)
634 retsig = 27;
635 else if (currsig == 2)
636 retsig = 18;
637 else if (currsig == 1)
638 retsig = 9;
639 else
640 retsig = currsig;
641 return retsig;
642 }
643
644 static void _rtl92c_query_rxphystatus(struct ieee80211_hw *hw,
645 struct rtl_stats *pstats,
646 struct rx_desc_92c *p_desc,
647 struct rx_fwinfo_92c *p_drvinfo,
648 bool packet_match_bssid,
649 bool packet_toself,
650 bool packet_beacon)
651 {
652 struct rtl_priv *rtlpriv = rtl_priv(hw);
653 struct rtl_phy *rtlphy = &(rtlpriv->phy);
654 struct phy_sts_cck_8192s_t *cck_buf;
655 s8 rx_pwr_all = 0, rx_pwr[4];
656 u8 rf_rx_num = 0, evm, pwdb_all;
657 u8 i, max_spatial_stream;
658 u32 rssi, total_rssi = 0;
659 bool in_powersavemode = false;
660 bool is_cck_rate;
661 u8 *pdesc = (u8 *)p_desc;
662
663 is_cck_rate = RX_HAL_IS_CCK_RATE(p_desc->rxmcs);
664 pstats->packet_matchbssid = packet_match_bssid;
665 pstats->packet_toself = packet_toself;
666 pstats->packet_beacon = packet_beacon;
667 pstats->is_cck = is_cck_rate;
668 pstats->RX_SIGQ[0] = -1;
669 pstats->RX_SIGQ[1] = -1;
670 if (is_cck_rate) {
671 u8 report, cck_highpwr;
672 cck_buf = (struct phy_sts_cck_8192s_t *)p_drvinfo;
673 if (!in_powersavemode)
674 cck_highpwr = rtlphy->cck_high_power;
675 else
676 cck_highpwr = false;
677 if (!cck_highpwr) {
678 u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
679 report = cck_buf->cck_agc_rpt & 0xc0;
680 report = report >> 6;
681 switch (report) {
682 case 0x3:
683 rx_pwr_all = -46 - (cck_agc_rpt & 0x3e);
684 break;
685 case 0x2:
686 rx_pwr_all = -26 - (cck_agc_rpt & 0x3e);
687 break;
688 case 0x1:
689 rx_pwr_all = -12 - (cck_agc_rpt & 0x3e);
690 break;
691 case 0x0:
692 rx_pwr_all = 16 - (cck_agc_rpt & 0x3e);
693 break;
694 }
695 } else {
696 u8 cck_agc_rpt = cck_buf->cck_agc_rpt;
697 report = p_drvinfo->cfosho[0] & 0x60;
698 report = report >> 5;
699 switch (report) {
700 case 0x3:
701 rx_pwr_all = -46 - ((cck_agc_rpt & 0x1f) << 1);
702 break;
703 case 0x2:
704 rx_pwr_all = -26 - ((cck_agc_rpt & 0x1f) << 1);
705 break;
706 case 0x1:
707 rx_pwr_all = -12 - ((cck_agc_rpt & 0x1f) << 1);
708 break;
709 case 0x0:
710 rx_pwr_all = 16 - ((cck_agc_rpt & 0x1f) << 1);
711 break;
712 }
713 }
714 pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
715 pstats->rx_pwdb_all = pwdb_all;
716 pstats->recvsignalpower = rx_pwr_all;
717 if (packet_match_bssid) {
718 u8 sq;
719 if (pstats->rx_pwdb_all > 40)
720 sq = 100;
721 else {
722 sq = cck_buf->sq_rpt;
723 if (sq > 64)
724 sq = 0;
725 else if (sq < 20)
726 sq = 100;
727 else
728 sq = ((64 - sq) * 100) / 44;
729 }
730 pstats->signalquality = sq;
731 pstats->RX_SIGQ[0] = sq;
732 pstats->RX_SIGQ[1] = -1;
733 }
734 } else {
735 rtlpriv->dm.rfpath_rxenable[0] =
736 rtlpriv->dm.rfpath_rxenable[1] = true;
737 for (i = RF90_PATH_A; i < RF90_PATH_MAX; i++) {
738 if (rtlpriv->dm.rfpath_rxenable[i])
739 rf_rx_num++;
740 rx_pwr[i] =
741 ((p_drvinfo->gain_trsw[i] & 0x3f) * 2) - 110;
742 rssi = _rtl92c_query_rxpwrpercentage(rx_pwr[i]);
743 total_rssi += rssi;
744 rtlpriv->stats.rx_snr_db[i] =
745 (long)(p_drvinfo->rxsnr[i] / 2);
746
747 if (packet_match_bssid)
748 pstats->rx_mimo_signalstrength[i] = (u8) rssi;
749 }
750 rx_pwr_all = ((p_drvinfo->pwdb_all >> 1) & 0x7f) - 110;
751 pwdb_all = _rtl92c_query_rxpwrpercentage(rx_pwr_all);
752 pstats->rx_pwdb_all = pwdb_all;
753 pstats->rxpower = rx_pwr_all;
754 pstats->recvsignalpower = rx_pwr_all;
755 if (GET_RX_DESC_RX_MCS(pdesc) &&
756 GET_RX_DESC_RX_MCS(pdesc) >= DESC_RATEMCS8 &&
757 GET_RX_DESC_RX_MCS(pdesc) <= DESC_RATEMCS15)
758 max_spatial_stream = 2;
759 else
760 max_spatial_stream = 1;
761 for (i = 0; i < max_spatial_stream; i++) {
762 evm = _rtl92c_evm_db_to_percentage(p_drvinfo->rxevm[i]);
763 if (packet_match_bssid) {
764 if (i == 0)
765 pstats->signalquality =
766 (u8) (evm & 0xff);
767 pstats->RX_SIGQ[i] =
768 (u8) (evm & 0xff);
769 }
770 }
771 }
772 if (is_cck_rate)
773 pstats->signalstrength =
774 (u8) (_rtl92c_signal_scale_mapping(hw, pwdb_all));
775 else if (rf_rx_num != 0)
776 pstats->signalstrength =
777 (u8) (_rtl92c_signal_scale_mapping
778 (hw, total_rssi /= rf_rx_num));
779 }
780
781 void rtl92c_translate_rx_signal_stuff(struct ieee80211_hw *hw,
782 struct sk_buff *skb,
783 struct rtl_stats *pstats,
784 struct rx_desc_92c *pdesc,
785 struct rx_fwinfo_92c *p_drvinfo)
786 {
787 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
788 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
789 struct ieee80211_hdr *hdr;
790 u8 *tmp_buf;
791 u8 *praddr;
792 __le16 fc;
793 u16 type, cpu_fc;
794 bool packet_matchbssid, packet_toself, packet_beacon = false;
795
796 tmp_buf = skb->data + pstats->rx_drvinfo_size + pstats->rx_bufshift;
797 hdr = (struct ieee80211_hdr *)tmp_buf;
798 fc = hdr->frame_control;
799 cpu_fc = le16_to_cpu(fc);
800 type = WLAN_FC_GET_TYPE(fc);
801 praddr = hdr->addr1;
802 packet_matchbssid =
803 ((IEEE80211_FTYPE_CTL != type) &&
804 ether_addr_equal(mac->bssid,
805 (cpu_fc & IEEE80211_FCTL_TODS) ? hdr->addr1 :
806 (cpu_fc & IEEE80211_FCTL_FROMDS) ? hdr->addr2 :
807 hdr->addr3) &&
808 (!pstats->hwerror) && (!pstats->crc) && (!pstats->icv));
809
810 packet_toself = packet_matchbssid &&
811 ether_addr_equal(praddr, rtlefuse->dev_addr);
812 if (ieee80211_is_beacon(fc))
813 packet_beacon = true;
814 _rtl92c_query_rxphystatus(hw, pstats, pdesc, p_drvinfo,
815 packet_matchbssid, packet_toself,
816 packet_beacon);
817 rtl_process_phyinfo(hw, tmp_buf, pstats);
818 }
CRIS linux kernel tree