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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 / rtl8192ee / trx.c
blob4f7444331b07b92f3afed64019358d085aacd383
1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2014 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 * 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 "../base.h"
29 #include "../stats.h"
30 #include "reg.h"
31 #include "def.h"
32 #include "phy.h"
33 #include "trx.h"
34 #include "led.h"
35 #include "dm.h"
36 #include "fw.h"
37
38 static u8 _rtl92ee_map_hwqueue_to_fwqueue(struct sk_buff *skb, u8 hw_queue)
39 {
40 __le16 fc = rtl_get_fc(skb);
41
42 if (unlikely(ieee80211_is_beacon(fc)))
43 return QSLT_BEACON;
44 if (ieee80211_is_mgmt(fc) || ieee80211_is_ctl(fc))
45 return QSLT_MGNT;
46
47 return skb->priority;
48 }
49
50 static void _rtl92ee_query_rxphystatus(struct ieee80211_hw *hw,
51 struct rtl_stats *pstatus, u8 *pdesc,
52 struct rx_fwinfo *p_drvinfo,
53 bool bpacket_match_bssid,
54 bool bpacket_toself,
55 bool packet_beacon)
56 {
57 struct rtl_priv *rtlpriv = rtl_priv(hw);
58 struct phy_status_rpt *p_phystrpt = (struct phy_status_rpt *)p_drvinfo;
59 s8 rx_pwr_all = 0, rx_pwr[4];
60 u8 rf_rx_num = 0, evm, pwdb_all;
61 u8 i, max_spatial_stream;
62 u32 rssi, total_rssi = 0;
63 bool is_cck = pstatus->is_cck;
64 u8 lan_idx, vga_idx;
65
66 /* Record it for next packet processing */
67 pstatus->packet_matchbssid = bpacket_match_bssid;
68 pstatus->packet_toself = bpacket_toself;
69 pstatus->packet_beacon = packet_beacon;
70 pstatus->rx_mimo_signalquality[0] = -1;
71 pstatus->rx_mimo_signalquality[1] = -1;
72
73 if (is_cck) {
74 u8 cck_highpwr;
75 u8 cck_agc_rpt;
76 /* CCK Driver info Structure is not the same as OFDM packet. */
77 cck_agc_rpt = p_phystrpt->cck_agc_rpt_ofdm_cfosho_a;
78
79 /* (1)Hardware does not provide RSSI for CCK
80 * (2)PWDB, Average PWDB cacluated by
81 * hardware (for rate adaptive)
82 */
83 cck_highpwr = (u8)rtl_get_bbreg(hw, RFPGA0_XA_HSSIPARAMETER2,
84 BIT(9));
85
86 lan_idx = ((cck_agc_rpt & 0xE0) >> 5);
87 vga_idx = (cck_agc_rpt & 0x1f);
88 switch (lan_idx) {
89 case 7: /*VGA_idx = 27~2*/
90 if (vga_idx <= 27)
91 rx_pwr_all = -100 + 2 * (27 - vga_idx);
92 else
93 rx_pwr_all = -100;
94 break;
95 case 6: /*VGA_idx = 2~0*/
96 rx_pwr_all = -48 + 2 * (2 - vga_idx);
97 break;
98 case 5: /*VGA_idx = 7~5*/
99 rx_pwr_all = -42 + 2 * (7 - vga_idx);
100 break;
101 case 4: /*VGA_idx = 7~4*/
102 rx_pwr_all = -36 + 2 * (7 - vga_idx);
103 break;
104 case 3: /*VGA_idx = 7~0*/
105 rx_pwr_all = -24 + 2 * (7 - vga_idx);
106 break;
107 case 2: /*VGA_idx = 5~0*/
108 if (cck_highpwr)
109 rx_pwr_all = -12 + 2 * (5 - vga_idx);
110 else
111 rx_pwr_all = -6 + 2 * (5 - vga_idx);
112 break;
113 case 1:
114 rx_pwr_all = 8 - 2 * vga_idx;
115 break;
116 case 0:
117 rx_pwr_all = 14 - 2 * vga_idx;
118 break;
119 default:
120 break;
121 }
122 rx_pwr_all += 16;
123 pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
124
125 if (!cck_highpwr) {
126 if (pwdb_all >= 80)
127 pwdb_all = ((pwdb_all - 80) << 1) +
128 ((pwdb_all - 80) >> 1) + 80;
129 else if ((pwdb_all <= 78) && (pwdb_all >= 20))
130 pwdb_all += 3;
131 if (pwdb_all > 100)
132 pwdb_all = 100;
133 }
134
135 pstatus->rx_pwdb_all = pwdb_all;
136 pstatus->bt_rx_rssi_percentage = pwdb_all;
137 pstatus->recvsignalpower = rx_pwr_all;
138
139 /* (3) Get Signal Quality (EVM) */
140 if (bpacket_match_bssid) {
141 u8 sq, sq_rpt;
142
143 if (pstatus->rx_pwdb_all > 40) {
144 sq = 100;
145 } else {
146 sq_rpt = p_phystrpt->cck_sig_qual_ofdm_pwdb_all;
147 if (sq_rpt > 64)
148 sq = 0;
149 else if (sq_rpt < 20)
150 sq = 100;
151 else
152 sq = ((64 - sq_rpt) * 100) / 44;
153 }
154
155 pstatus->signalquality = sq;
156 pstatus->rx_mimo_signalquality[0] = sq;
157 pstatus->rx_mimo_signalquality[1] = -1;
158 }
159 } else {
160 /* (1)Get RSSI for HT rate */
161 for (i = RF90_PATH_A; i < RF6052_MAX_PATH; i++) {
162 /* we will judge RF RX path now. */
163 if (rtlpriv->dm.rfpath_rxenable[i])
164 rf_rx_num++;
165
166 rx_pwr[i] = ((p_phystrpt->path_agc[i].gain & 0x3f) * 2)
167 - 110;
168
169 pstatus->rx_pwr[i] = rx_pwr[i];
170 /* Translate DBM to percentage. */
171 rssi = rtl_query_rxpwrpercentage(rx_pwr[i]);
172 total_rssi += rssi;
173
174 pstatus->rx_mimo_signalstrength[i] = (u8)rssi;
175 }
176
177 /* (2)PWDB, Average PWDB cacluated by
178 * hardware (for rate adaptive)
179 */
180 rx_pwr_all = ((p_phystrpt->cck_sig_qual_ofdm_pwdb_all >> 1)
181 & 0x7f) - 110;
182
183 pwdb_all = rtl_query_rxpwrpercentage(rx_pwr_all);
184 pstatus->rx_pwdb_all = pwdb_all;
185 pstatus->bt_rx_rssi_percentage = pwdb_all;
186 pstatus->rxpower = rx_pwr_all;
187 pstatus->recvsignalpower = rx_pwr_all;
188
189 /* (3)EVM of HT rate */
190 if (pstatus->rate >= DESC_RATEMCS8 &&
191 pstatus->rate <= DESC_RATEMCS15)
192 max_spatial_stream = 2;
193 else
194 max_spatial_stream = 1;
195
196 for (i = 0; i < max_spatial_stream; i++) {
197 evm = rtl_evm_db_to_percentage(
198 p_phystrpt->stream_rxevm[i]);
199
200 if (bpacket_match_bssid) {
201 /* Fill value in RFD, Get the first
202 * spatial stream only
203 */
204 if (i == 0)
205 pstatus->signalquality = (u8)(evm &
206 0xff);
207 pstatus->rx_mimo_signalquality[i] = (u8)(evm &
208 0xff);
209 }
210 }
211
212 if (bpacket_match_bssid) {
213 for (i = RF90_PATH_A; i <= RF90_PATH_B; i++)
214 rtl_priv(hw)->dm.cfo_tail[i] =
215 (int)p_phystrpt->path_cfotail[i];
216
217 if (rtl_priv(hw)->dm.packet_count == 0xffffffff)
218 rtl_priv(hw)->dm.packet_count = 0;
219 else
220 rtl_priv(hw)->dm.packet_count++;
221 }
222 }
223
224 /* UI BSS List signal strength(in percentage),
225 * make it good looking, from 0~100.
226 */
227 if (is_cck)
228 pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
229 pwdb_all));
230 else if (rf_rx_num != 0)
231 pstatus->signalstrength = (u8)(rtl_signal_scale_mapping(hw,
232 total_rssi /= rf_rx_num));
233 }
234
235 static void _rtl92ee_translate_rx_signal_stuff(struct ieee80211_hw *hw,
236 struct sk_buff *skb,
237 struct rtl_stats *pstatus,
238 u8 *pdesc,
239 struct rx_fwinfo *p_drvinfo)
240 {
241 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
242 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
243 struct ieee80211_hdr *hdr;
244 u8 *tmp_buf;
245 u8 *praddr;
246 u8 *psaddr;
247 __le16 fc;
248 bool packet_matchbssid, packet_toself, packet_beacon;
249
250 tmp_buf = skb->data + pstatus->rx_drvinfo_size +
251 pstatus->rx_bufshift + 24;
252
253 hdr = (struct ieee80211_hdr *)tmp_buf;
254 fc = hdr->frame_control;
255 praddr = hdr->addr1;
256 psaddr = ieee80211_get_SA(hdr);
257 ether_addr_copy(pstatus->psaddr, psaddr);
258
259 packet_matchbssid = (!ieee80211_is_ctl(fc) &&
260 (ether_addr_equal(mac->bssid,
261 ieee80211_has_tods(fc) ?
262 hdr->addr1 :
263 ieee80211_has_fromds(fc) ?
264 hdr->addr2 : hdr->addr3)) &&
265 (!pstatus->hwerror) && (!pstatus->crc) &&
266 (!pstatus->icv));
267
268 packet_toself = packet_matchbssid &&
269 (ether_addr_equal(praddr, rtlefuse->dev_addr));
270
271 if (ieee80211_is_beacon(fc))
272 packet_beacon = true;
273 else
274 packet_beacon = false;
275
276 if (packet_beacon && packet_matchbssid)
277 rtl_priv(hw)->dm.dbginfo.num_qry_beacon_pkt++;
278
279 if (packet_matchbssid && ieee80211_is_data_qos(hdr->frame_control) &&
280 !is_multicast_ether_addr(ieee80211_get_DA(hdr))) {
281 struct ieee80211_qos_hdr *hdr_qos =
282 (struct ieee80211_qos_hdr *)tmp_buf;
283 u16 tid = le16_to_cpu(hdr_qos->qos_ctrl) & 0xf;
284
285 if (tid != 0 && tid != 3)
286 rtl_priv(hw)->dm.dbginfo.num_non_be_pkt++;
287 }
288
289 _rtl92ee_query_rxphystatus(hw, pstatus, pdesc, p_drvinfo,
290 packet_matchbssid, packet_toself,
291 packet_beacon);
292 rtl_process_phyinfo(hw, tmp_buf, pstatus);
293 }
294
295 static void _rtl92ee_insert_emcontent(struct rtl_tcb_desc *ptcb_desc,
296 u8 *virtualaddress)
297 {
298 u32 dwtmp = 0;
299
300 memset(virtualaddress, 0, 8);
301
302 SET_EARLYMODE_PKTNUM(virtualaddress, ptcb_desc->empkt_num);
303 if (ptcb_desc->empkt_num == 1) {
304 dwtmp = ptcb_desc->empkt_len[0];
305 } else {
306 dwtmp = ptcb_desc->empkt_len[0];
307 dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
308 dwtmp += ptcb_desc->empkt_len[1];
309 }
310 SET_EARLYMODE_LEN0(virtualaddress, dwtmp);
311
312 if (ptcb_desc->empkt_num <= 3) {
313 dwtmp = ptcb_desc->empkt_len[2];
314 } else {
315 dwtmp = ptcb_desc->empkt_len[2];
316 dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
317 dwtmp += ptcb_desc->empkt_len[3];
318 }
319 SET_EARLYMODE_LEN1(virtualaddress, dwtmp);
320 if (ptcb_desc->empkt_num <= 5) {
321 dwtmp = ptcb_desc->empkt_len[4];
322 } else {
323 dwtmp = ptcb_desc->empkt_len[4];
324 dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
325 dwtmp += ptcb_desc->empkt_len[5];
326 }
327 SET_EARLYMODE_LEN2_1(virtualaddress, dwtmp & 0xF);
328 SET_EARLYMODE_LEN2_2(virtualaddress, dwtmp >> 4);
329 if (ptcb_desc->empkt_num <= 7) {
330 dwtmp = ptcb_desc->empkt_len[6];
331 } else {
332 dwtmp = ptcb_desc->empkt_len[6];
333 dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
334 dwtmp += ptcb_desc->empkt_len[7];
335 }
336 SET_EARLYMODE_LEN3(virtualaddress, dwtmp);
337 if (ptcb_desc->empkt_num <= 9) {
338 dwtmp = ptcb_desc->empkt_len[8];
339 } else {
340 dwtmp = ptcb_desc->empkt_len[8];
341 dwtmp += ((dwtmp % 4) ? (4 - dwtmp % 4) : 0) + 4;
342 dwtmp += ptcb_desc->empkt_len[9];
343 }
344 SET_EARLYMODE_LEN4(virtualaddress, dwtmp);
345 }
346
347 bool rtl92ee_rx_query_desc(struct ieee80211_hw *hw,
348 struct rtl_stats *status,
349 struct ieee80211_rx_status *rx_status,
350 u8 *pdesc, struct sk_buff *skb)
351 {
352 struct rtl_priv *rtlpriv = rtl_priv(hw);
353 struct rx_fwinfo *p_drvinfo;
354 struct ieee80211_hdr *hdr;
355 u32 phystatus = GET_RX_DESC_PHYST(pdesc);
356
357 if (GET_RX_STATUS_DESC_RPT_SEL(pdesc) == 0)
358 status->packet_report_type = NORMAL_RX;
359 else
360 status->packet_report_type = C2H_PACKET;
361 status->length = (u16)GET_RX_DESC_PKT_LEN(pdesc);
362 status->rx_drvinfo_size = (u8)GET_RX_DESC_DRV_INFO_SIZE(pdesc) *
363 RX_DRV_INFO_SIZE_UNIT;
364 status->rx_bufshift = (u8)(GET_RX_DESC_SHIFT(pdesc) & 0x03);
365 status->icv = (u16)GET_RX_DESC_ICV(pdesc);
366 status->crc = (u16)GET_RX_DESC_CRC32(pdesc);
367 status->hwerror = (status->crc | status->icv);
368 status->decrypted = !GET_RX_DESC_SWDEC(pdesc);
369 status->rate = (u8)GET_RX_DESC_RXMCS(pdesc);
370 status->isampdu = (bool)(GET_RX_DESC_PAGGR(pdesc) == 1);
371 status->timestamp_low = GET_RX_DESC_TSFL(pdesc);
372 status->is_cck = RTL92EE_RX_HAL_IS_CCK_RATE(status->rate);
373
374 status->macid = GET_RX_DESC_MACID(pdesc);
375 if (GET_RX_STATUS_DESC_MAGIC_MATCH(pdesc))
376 status->wake_match = BIT(2);
377 else if (GET_RX_STATUS_DESC_MAGIC_MATCH(pdesc))
378 status->wake_match = BIT(1);
379 else if (GET_RX_STATUS_DESC_UNICAST_MATCH(pdesc))
380 status->wake_match = BIT(0);
381 else
382 status->wake_match = 0;
383 if (status->wake_match)
384 RT_TRACE(rtlpriv, COMP_RXDESC, DBG_LOUD,
385 "GGGGGGGGGGGGGet Wakeup Packet!! WakeMatch=%d\n",
386 status->wake_match);
387 rx_status->freq = hw->conf.chandef.chan->center_freq;
388 rx_status->band = hw->conf.chandef.chan->band;
389
390 hdr = (struct ieee80211_hdr *)(skb->data + status->rx_drvinfo_size +
391 status->rx_bufshift + 24);
392
393 if (status->crc)
394 rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
395
396 if (status->rx_is40Mhzpacket)
397 rx_status->bw = RATE_INFO_BW_40;
398
399 if (status->is_ht)
400 rx_status->encoding = RX_ENC_HT;
401
402 rx_status->flag |= RX_FLAG_MACTIME_START;
403
404 /* hw will set status->decrypted true, if it finds the
405 * frame is open data frame or mgmt frame.
406 * So hw will not decryption robust managment frame
407 * for IEEE80211w but still set status->decrypted
408 * true, so here we should set it back to undecrypted
409 * for IEEE80211w frame, and mac80211 sw will help
410 * to decrypt it
411 */
412 if (status->decrypted) {
413 if ((!_ieee80211_is_robust_mgmt_frame(hdr)) &&
414 (ieee80211_has_protected(hdr->frame_control)))
415 rx_status->flag |= RX_FLAG_DECRYPTED;
416 else
417 rx_status->flag &= ~RX_FLAG_DECRYPTED;
418 }
419
420 /* rate_idx: index of data rate into band's
421 * supported rates or MCS index if HT rates
422 * are use (RX_FLAG_HT)
423 * Notice: this is diff with windows define
424 */
425 rx_status->rate_idx = rtlwifi_rate_mapping(hw, status->is_ht,
426 false, status->rate);
427
428 rx_status->mactime = status->timestamp_low;
429 if (phystatus) {
430 p_drvinfo = (struct rx_fwinfo *)(skb->data +
431 status->rx_bufshift + 24);
432
433 _rtl92ee_translate_rx_signal_stuff(hw, skb, status, pdesc,
434 p_drvinfo);
435 }
436 rx_status->signal = status->recvsignalpower + 10;
437 if (status->packet_report_type == TX_REPORT2) {
438 status->macid_valid_entry[0] =
439 GET_RX_RPT2_DESC_MACID_VALID_1(pdesc);
440 status->macid_valid_entry[1] =
441 GET_RX_RPT2_DESC_MACID_VALID_2(pdesc);
442 }
443 return true;
444 }
445
446 /*in Windows, this == Rx_92EE_Interrupt*/
447 void rtl92ee_rx_check_dma_ok(struct ieee80211_hw *hw, u8 *header_desc,
448 u8 queue_index)
449 {
450 u8 first_seg = 0;
451 u8 last_seg = 0;
452 u16 total_len = 0;
453 u16 read_cnt = 0;
454
455 if (header_desc == NULL)
456 return;
457
458 total_len = (u16)GET_RX_BUFFER_DESC_TOTAL_LENGTH(header_desc);
459
460 first_seg = (u8)GET_RX_BUFFER_DESC_FS(header_desc);
461
462 last_seg = (u8)GET_RX_BUFFER_DESC_LS(header_desc);
463
464 while (total_len == 0 && first_seg == 0 && last_seg == 0) {
465 read_cnt++;
466 total_len = (u16)GET_RX_BUFFER_DESC_TOTAL_LENGTH(header_desc);
467 first_seg = (u8)GET_RX_BUFFER_DESC_FS(header_desc);
468 last_seg = (u8)GET_RX_BUFFER_DESC_LS(header_desc);
469
470 if (read_cnt > 20)
471 break;
472 }
473 }
474
475 u16 rtl92ee_rx_desc_buff_remained_cnt(struct ieee80211_hw *hw, u8 queue_index)
476 {
477 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
478 struct rtl_priv *rtlpriv = rtl_priv(hw);
479 u16 read_point = 0, write_point = 0, remind_cnt = 0;
480 u32 tmp_4byte = 0;
481 static bool start_rx;
482
483 tmp_4byte = rtl_read_dword(rtlpriv, REG_RXQ_TXBD_IDX);
484 read_point = (u16)((tmp_4byte>>16) & 0x7ff);
485 write_point = (u16)(tmp_4byte & 0x7ff);
486
487 if (write_point != rtlpci->rx_ring[queue_index].next_rx_rp) {
488 RT_TRACE(rtlpriv, COMP_RXDESC, DBG_DMESG,
489 "!!!write point is 0x%x, reg 0x3B4 value is 0x%x\n",
490 write_point, tmp_4byte);
491 tmp_4byte = rtl_read_dword(rtlpriv, REG_RXQ_TXBD_IDX);
492 read_point = (u16)((tmp_4byte>>16) & 0x7ff);
493 write_point = (u16)(tmp_4byte & 0x7ff);
494 }
495
496 if (read_point > 0)
497 start_rx = true;
498 if (!start_rx)
499 return 0;
500
501 remind_cnt = calc_fifo_space(read_point, write_point,
502 RTL_PCI_MAX_RX_COUNT);
503
504 if (remind_cnt == 0)
505 return 0;
506
507 rtlpci->rx_ring[queue_index].next_rx_rp = write_point;
508
509 return remind_cnt;
510 }
511
512 static u16 get_desc_addr_fr_q_idx(u16 queue_index)
513 {
514 u16 desc_address = REG_BEQ_TXBD_IDX;
515
516 switch (queue_index) {
517 case BK_QUEUE:
518 desc_address = REG_BKQ_TXBD_IDX;
519 break;
520 case BE_QUEUE:
521 desc_address = REG_BEQ_TXBD_IDX;
522 break;
523 case VI_QUEUE:
524 desc_address = REG_VIQ_TXBD_IDX;
525 break;
526 case VO_QUEUE:
527 desc_address = REG_VOQ_TXBD_IDX;
528 break;
529 case BEACON_QUEUE:
530 desc_address = REG_BEQ_TXBD_IDX;
531 break;
532 case TXCMD_QUEUE:
533 desc_address = REG_BEQ_TXBD_IDX;
534 break;
535 case MGNT_QUEUE:
536 desc_address = REG_MGQ_TXBD_IDX;
537 break;
538 case HIGH_QUEUE:
539 desc_address = REG_HI0Q_TXBD_IDX;
540 break;
541 case HCCA_QUEUE:
542 desc_address = REG_BEQ_TXBD_IDX;
543 break;
544 default:
545 break;
546 }
547 return desc_address;
548 }
549
550 u16 rtl92ee_get_available_desc(struct ieee80211_hw *hw, u8 q_idx)
551 {
552 struct rtl_priv *rtlpriv = rtl_priv(hw);
553 u16 point_diff = 0;
554 u16 current_tx_read_point = 0, current_tx_write_point = 0;
555 u32 tmp_4byte;
556
557 tmp_4byte = rtl_read_dword(rtlpriv,
558 get_desc_addr_fr_q_idx(q_idx));
559 current_tx_read_point = (u16)((tmp_4byte >> 16) & 0x0fff);
560 current_tx_write_point = (u16)((tmp_4byte) & 0x0fff);
561
562 point_diff = calc_fifo_space(current_tx_read_point,
563 current_tx_write_point,
564 TX_DESC_NUM_92E);
565
566 return point_diff;
567 }
568
569 void rtl92ee_pre_fill_tx_bd_desc(struct ieee80211_hw *hw,
570 u8 *tx_bd_desc, u8 *desc, u8 queue_index,
571 struct sk_buff *skb, dma_addr_t addr)
572 {
573 struct rtl_priv *rtlpriv = rtl_priv(hw);
574 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
575 u32 pkt_len = skb->len;
576 u16 desc_size = 40; /*tx desc size*/
577 u32 psblen = 0;
578 u16 tx_page_size = 0;
579 u32 total_packet_size = 0;
580 u16 current_bd_desc;
581 u8 i = 0;
582 u16 real_desc_size = 0x28;
583 u16 append_early_mode_size = 0;
584 u8 segmentnum = 1 << (RTL8192EE_SEG_NUM + 1);
585 dma_addr_t desc_dma_addr;
586 bool dma64 = rtlpriv->cfg->mod_params->dma64;
587
588 tx_page_size = 2;
589 current_bd_desc = rtlpci->tx_ring[queue_index].cur_tx_wp;
590
591 total_packet_size = desc_size+pkt_len;
592
593 if (rtlpriv->rtlhal.earlymode_enable) {
594 if (queue_index < BEACON_QUEUE) {
595 append_early_mode_size = 8;
596 total_packet_size += append_early_mode_size;
597 }
598 }
599
600 if (tx_page_size > 0) {
601 psblen = (pkt_len + real_desc_size + append_early_mode_size) /
602 (tx_page_size * 128);
603
604 if (psblen * (tx_page_size * 128) < total_packet_size)
605 psblen += 1;
606 }
607
608 /* tx desc addr */
609 desc_dma_addr = rtlpci->tx_ring[queue_index].dma +
610 (current_bd_desc * TX_DESC_SIZE);
611
612 /* Reset */
613 SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, 0);
614 SET_TX_BUFF_DESC_PSB(tx_bd_desc, 0);
615 SET_TX_BUFF_DESC_OWN(tx_bd_desc, 0);
616
617 for (i = 1; i < segmentnum; i++) {
618 SET_TXBUFFER_DESC_LEN_WITH_OFFSET(tx_bd_desc, i, 0);
619 SET_TXBUFFER_DESC_AMSDU_WITH_OFFSET(tx_bd_desc, i, 0);
620 SET_TXBUFFER_DESC_ADD_LOW_WITH_OFFSET(tx_bd_desc, i, 0);
621 SET_TXBUFFER_DESC_ADD_HIGH_WITH_OFFSET(tx_bd_desc, i, 0, dma64);
622 }
623
624 /* Clear all status */
625 CLEAR_PCI_TX_DESC_CONTENT(desc, TX_DESC_SIZE);
626
627 if (rtlpriv->rtlhal.earlymode_enable) {
628 if (queue_index < BEACON_QUEUE) {
629 /* This if needs braces */
630 SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, desc_size + 8);
631 } else {
632 SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, desc_size);
633 }
634 } else {
635 SET_TX_BUFF_DESC_LEN_0(tx_bd_desc, desc_size);
636 }
637 SET_TX_BUFF_DESC_PSB(tx_bd_desc, psblen);
638 SET_TX_BUFF_DESC_ADDR_LOW_0(tx_bd_desc, desc_dma_addr);
639 SET_TX_BUFF_DESC_ADDR_HIGH_0(tx_bd_desc, ((u64)desc_dma_addr >> 32),
640 dma64);
641
642 SET_TXBUFFER_DESC_LEN_WITH_OFFSET(tx_bd_desc, 1, pkt_len);
643 /* don't using extendsion mode. */
644 SET_TXBUFFER_DESC_AMSDU_WITH_OFFSET(tx_bd_desc, 1, 0);
645 SET_TXBUFFER_DESC_ADD_LOW_WITH_OFFSET(tx_bd_desc, 1, addr);
646 SET_TXBUFFER_DESC_ADD_HIGH_WITH_OFFSET(tx_bd_desc, 1,
647 ((u64)addr >> 32), dma64);
648
649 SET_TX_DESC_PKT_SIZE(desc, (u16)(pkt_len));
650 SET_TX_DESC_TX_BUFFER_SIZE(desc, (u16)(pkt_len));
651 }
652
653 void rtl92ee_tx_fill_desc(struct ieee80211_hw *hw,
654 struct ieee80211_hdr *hdr, u8 *pdesc_tx,
655 u8 *pbd_desc_tx,
656 struct ieee80211_tx_info *info,
657 struct ieee80211_sta *sta,
658 struct sk_buff *skb,
659 u8 hw_queue, struct rtl_tcb_desc *ptcb_desc)
660 {
661 struct rtl_priv *rtlpriv = rtl_priv(hw);
662 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
663 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
664 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
665 u8 *pdesc = (u8 *)pdesc_tx;
666 u16 seq_number;
667 __le16 fc = hdr->frame_control;
668 unsigned int buf_len = 0;
669 u8 fw_qsel = _rtl92ee_map_hwqueue_to_fwqueue(skb, hw_queue);
670 bool firstseg = ((hdr->seq_ctrl &
671 cpu_to_le16(IEEE80211_SCTL_FRAG)) == 0);
672 bool lastseg = ((hdr->frame_control &
673 cpu_to_le16(IEEE80211_FCTL_MOREFRAGS)) == 0);
674 dma_addr_t mapping;
675 u8 bw_40 = 0;
676 u8 short_gi = 0;
677
678 if (mac->opmode == NL80211_IFTYPE_STATION) {
679 bw_40 = mac->bw_40;
680 } else if (mac->opmode == NL80211_IFTYPE_AP ||
681 mac->opmode == NL80211_IFTYPE_ADHOC) {
682 if (sta)
683 bw_40 = sta->ht_cap.cap &
684 IEEE80211_HT_CAP_SUP_WIDTH_20_40;
685 }
686 seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
687 rtl_get_tcb_desc(hw, info, sta, skb, ptcb_desc);
688 /* reserve 8 byte for AMPDU early mode */
689 if (rtlhal->earlymode_enable) {
690 skb_push(skb, EM_HDR_LEN);
691 memset(skb->data, 0, EM_HDR_LEN);
692 }
693 buf_len = skb->len;
694 mapping = pci_map_single(rtlpci->pdev, skb->data, skb->len,
695 PCI_DMA_TODEVICE);
696 if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
697 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
698 "DMA mapping error\n");
699 return;
700 }
701
702 if (pbd_desc_tx != NULL)
703 rtl92ee_pre_fill_tx_bd_desc(hw, pbd_desc_tx, pdesc, hw_queue,
704 skb, mapping);
705
706 if (ieee80211_is_nullfunc(fc) || ieee80211_is_ctl(fc)) {
707 firstseg = true;
708 lastseg = true;
709 }
710 if (firstseg) {
711 if (rtlhal->earlymode_enable) {
712 SET_TX_DESC_PKT_OFFSET(pdesc, 1);
713 SET_TX_DESC_OFFSET(pdesc,
714 USB_HWDESC_HEADER_LEN + EM_HDR_LEN);
715 if (ptcb_desc->empkt_num) {
716 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
717 "Insert 8 byte.pTcb->EMPktNum:%d\n",
718 ptcb_desc->empkt_num);
719 _rtl92ee_insert_emcontent(ptcb_desc,
720 (u8 *)(skb->data));
721 }
722 } else {
723 SET_TX_DESC_OFFSET(pdesc, USB_HWDESC_HEADER_LEN);
724 }
725
726 /* tx report */
727 rtl_get_tx_report(ptcb_desc, pdesc, hw);
728
729 SET_TX_DESC_TX_RATE(pdesc, ptcb_desc->hw_rate);
730
731 if (ieee80211_is_mgmt(fc)) {
732 ptcb_desc->use_driver_rate = true;
733 } else {
734 if (rtlpriv->ra.is_special_data) {
735 ptcb_desc->use_driver_rate = true;
736 SET_TX_DESC_TX_RATE(pdesc, DESC_RATE11M);
737 } else {
738 ptcb_desc->use_driver_rate = false;
739 }
740 }
741
742 if (ptcb_desc->hw_rate > DESC_RATEMCS0)
743 short_gi = (ptcb_desc->use_shortgi) ? 1 : 0;
744 else
745 short_gi = (ptcb_desc->use_shortpreamble) ? 1 : 0;
746
747 if (info->flags & IEEE80211_TX_CTL_AMPDU) {
748 SET_TX_DESC_AGG_ENABLE(pdesc, 1);
749 SET_TX_DESC_MAX_AGG_NUM(pdesc, 0x14);
750 }
751 SET_TX_DESC_SEQ(pdesc, seq_number);
752 SET_TX_DESC_RTS_ENABLE(pdesc,
753 ((ptcb_desc->rts_enable &&
754 !ptcb_desc->cts_enable) ? 1 : 0));
755 SET_TX_DESC_HW_RTS_ENABLE(pdesc, 0);
756 SET_TX_DESC_CTS2SELF(pdesc,
757 ((ptcb_desc->cts_enable) ? 1 : 0));
758
759 SET_TX_DESC_RTS_RATE(pdesc, ptcb_desc->rts_rate);
760 SET_TX_DESC_RTS_SC(pdesc, ptcb_desc->rts_sc);
761 SET_TX_DESC_RTS_SHORT(pdesc,
762 ((ptcb_desc->rts_rate <= DESC_RATE54M) ?
763 (ptcb_desc->rts_use_shortpreamble ? 1 : 0) :
764 (ptcb_desc->rts_use_shortgi ? 1 : 0)));
765
766 if (ptcb_desc->tx_enable_sw_calc_duration)
767 SET_TX_DESC_NAV_USE_HDR(pdesc, 1);
768
769 if (bw_40) {
770 if (ptcb_desc->packet_bw == HT_CHANNEL_WIDTH_20_40) {
771 SET_TX_DESC_DATA_BW(pdesc, 1);
772 SET_TX_DESC_TX_SUB_CARRIER(pdesc, 3);
773 } else {
774 SET_TX_DESC_DATA_BW(pdesc, 0);
775 SET_TX_DESC_TX_SUB_CARRIER(pdesc,
776 mac->cur_40_prime_sc);
777 }
778 } else {
779 SET_TX_DESC_DATA_BW(pdesc, 0);
780 SET_TX_DESC_TX_SUB_CARRIER(pdesc, 0);
781 }
782
783 SET_TX_DESC_LINIP(pdesc, 0);
784 if (sta) {
785 u8 ampdu_density = sta->ht_cap.ampdu_density;
786
787 SET_TX_DESC_AMPDU_DENSITY(pdesc, ampdu_density);
788 }
789 if (info->control.hw_key) {
790 struct ieee80211_key_conf *key = info->control.hw_key;
791
792 switch (key->cipher) {
793 case WLAN_CIPHER_SUITE_WEP40:
794 case WLAN_CIPHER_SUITE_WEP104:
795 case WLAN_CIPHER_SUITE_TKIP:
796 SET_TX_DESC_SEC_TYPE(pdesc, 0x1);
797 break;
798 case WLAN_CIPHER_SUITE_CCMP:
799 SET_TX_DESC_SEC_TYPE(pdesc, 0x3);
800 break;
801 default:
802 SET_TX_DESC_SEC_TYPE(pdesc, 0x0);
803 break;
804 }
805 }
806
807 SET_TX_DESC_QUEUE_SEL(pdesc, fw_qsel);
808 SET_TX_DESC_DATA_RATE_FB_LIMIT(pdesc, 0x1F);
809 SET_TX_DESC_RTS_RATE_FB_LIMIT(pdesc, 0xF);
810 SET_TX_DESC_DISABLE_FB(pdesc,
811 ptcb_desc->disable_ratefallback ? 1 : 0);
812 SET_TX_DESC_USE_RATE(pdesc, ptcb_desc->use_driver_rate ? 1 : 0);
813
814 /*SET_TX_DESC_PWR_STATUS(pdesc, pwr_status);*/
815 /* Set TxRate and RTSRate in TxDesc */
816 /* This prevent Tx initial rate of new-coming packets */
817 /* from being overwritten by retried packet rate.*/
818 if (!ptcb_desc->use_driver_rate) {
819 /*SET_TX_DESC_RTS_RATE(pdesc, 0x08); */
820 /* SET_TX_DESC_TX_RATE(pdesc, 0x0b); */
821 }
822 if (ieee80211_is_data_qos(fc)) {
823 if (mac->rdg_en) {
824 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
825 "Enable RDG function.\n");
826 SET_TX_DESC_RDG_ENABLE(pdesc, 1);
827 SET_TX_DESC_HTC(pdesc, 1);
828 }
829 }
830 }
831
832 SET_TX_DESC_FIRST_SEG(pdesc, (firstseg ? 1 : 0));
833 SET_TX_DESC_LAST_SEG(pdesc, (lastseg ? 1 : 0));
834 SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
835 if (rtlpriv->dm.useramask) {
836 SET_TX_DESC_RATE_ID(pdesc, ptcb_desc->ratr_index);
837 SET_TX_DESC_MACID(pdesc, ptcb_desc->mac_id);
838 } else {
839 SET_TX_DESC_RATE_ID(pdesc, 0xC + ptcb_desc->ratr_index);
840 SET_TX_DESC_MACID(pdesc, ptcb_desc->ratr_index);
841 }
842
843 SET_TX_DESC_MORE_FRAG(pdesc, (lastseg ? 0 : 1));
844 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
845 is_broadcast_ether_addr(ieee80211_get_DA(hdr))) {
846 SET_TX_DESC_BMC(pdesc, 1);
847 }
848 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "\n");
849 }
850
851 void rtl92ee_tx_fill_cmddesc(struct ieee80211_hw *hw,
852 u8 *pdesc, bool firstseg,
853 bool lastseg, struct sk_buff *skb)
854 {
855 struct rtl_priv *rtlpriv = rtl_priv(hw);
856 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
857 u8 fw_queue = QSLT_BEACON;
858 dma_addr_t mapping = pci_map_single(rtlpci->pdev,
859 skb->data, skb->len,
860 PCI_DMA_TODEVICE);
861 u8 txdesc_len = 40;
862
863 if (pci_dma_mapping_error(rtlpci->pdev, mapping)) {
864 RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
865 "DMA mapping error\n");
866 return;
867 }
868 CLEAR_PCI_TX_DESC_CONTENT(pdesc, txdesc_len);
869
870 if (firstseg)
871 SET_TX_DESC_OFFSET(pdesc, txdesc_len);
872
873 SET_TX_DESC_TX_RATE(pdesc, DESC_RATE1M);
874
875 SET_TX_DESC_SEQ(pdesc, 0);
876
877 SET_TX_DESC_LINIP(pdesc, 0);
878
879 SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
880
881 SET_TX_DESC_FIRST_SEG(pdesc, 1);
882 SET_TX_DESC_LAST_SEG(pdesc, 1);
883
884 SET_TX_DESC_TX_BUFFER_SIZE(pdesc, (u16)(skb->len));
885
886 SET_TX_DESC_TX_BUFFER_ADDRESS(pdesc, mapping);
887
888 SET_TX_DESC_RATE_ID(pdesc, 7);
889 SET_TX_DESC_MACID(pdesc, 0);
890
891 SET_TX_DESC_OWN(pdesc, 1);
892
893 SET_TX_DESC_PKT_SIZE((u8 *)pdesc, (u16)(skb->len));
894
895 SET_TX_DESC_FIRST_SEG(pdesc, 1);
896 SET_TX_DESC_LAST_SEG(pdesc, 1);
897
898 SET_TX_DESC_OFFSET(pdesc, 40);
899
900 SET_TX_DESC_USE_RATE(pdesc, 1);
901
902 RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD,
903 "H2C Tx Cmd Content\n", pdesc, txdesc_len);
904 }
905
906 void rtl92ee_set_desc(struct ieee80211_hw *hw, u8 *pdesc, bool istx,
907 u8 desc_name, u8 *val)
908 {
909 struct rtl_priv *rtlpriv = rtl_priv(hw);
910 u8 q_idx = *val;
911 bool dma64 = rtlpriv->cfg->mod_params->dma64;
912
913 if (istx) {
914 switch (desc_name) {
915 case HW_DESC_TX_NEXTDESC_ADDR:
916 SET_TX_DESC_NEXT_DESC_ADDRESS(pdesc, *(u32 *)val);
917 break;
918 case HW_DESC_OWN:{
919 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
920 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[q_idx];
921 u16 max_tx_desc = ring->entries;
922
923 if (q_idx == BEACON_QUEUE) {
924 ring->cur_tx_wp = 0;
925 ring->cur_tx_rp = 0;
926 SET_TX_BUFF_DESC_OWN(pdesc, 1);
927 return;
928 }
929
930 /* make sure tx desc is available by caller */
931 ring->cur_tx_wp = ((ring->cur_tx_wp + 1) % max_tx_desc);
932
933 rtl_write_word(rtlpriv,
934 get_desc_addr_fr_q_idx(q_idx),
935 ring->cur_tx_wp);
936 }
937 break;
938 }
939 } else {
940 switch (desc_name) {
941 case HW_DESC_RX_PREPARE:
942 SET_RX_BUFFER_DESC_LS(pdesc, 0);
943 SET_RX_BUFFER_DESC_FS(pdesc, 0);
944 SET_RX_BUFFER_DESC_TOTAL_LENGTH(pdesc, 0);
945
946 SET_RX_BUFFER_DESC_DATA_LENGTH(pdesc,
947 MAX_RECEIVE_BUFFER_SIZE +
948 RX_DESC_SIZE);
949
950 SET_RX_BUFFER_PHYSICAL_LOW(pdesc, (*(dma_addr_t *)val) &
951 DMA_BIT_MASK(32));
952 SET_RX_BUFFER_PHYSICAL_HIGH(pdesc,
953 ((u64)(*(dma_addr_t *)val)
954 >> 32),
955 dma64);
956 break;
957 case HW_DESC_RXERO:
958 SET_RX_DESC_EOR(pdesc, 1);
959 break;
960 default:
961 WARN_ONCE(true,
962 "rtl8192ee: ERR rxdesc :%d not processed\n",
963 desc_name);
964 break;
965 }
966 }
967 }
968
969 u64 rtl92ee_get_desc(struct ieee80211_hw *hw,
970 u8 *pdesc, bool istx, u8 desc_name)
971 {
972 struct rtl_priv *rtlpriv = rtl_priv(hw);
973 u64 ret = 0;
974 bool dma64 = rtlpriv->cfg->mod_params->dma64;
975
976 if (istx) {
977 switch (desc_name) {
978 case HW_DESC_OWN:
979 ret = GET_TX_DESC_OWN(pdesc);
980 break;
981 case HW_DESC_TXBUFF_ADDR:
982 ret = GET_TXBUFFER_DESC_ADDR_LOW(pdesc, 1);
983 ret |= (u64)GET_TXBUFFER_DESC_ADDR_HIGH(pdesc, 1,
984 dma64) << 32;
985 break;
986 default:
987 WARN_ONCE(true,
988 "rtl8192ee: ERR txdesc :%d not processed\n",
989 desc_name);
990 break;
991 }
992 } else {
993 switch (desc_name) {
994 case HW_DESC_OWN:
995 ret = GET_RX_DESC_OWN(pdesc);
996 break;
997 case HW_DESC_RXPKT_LEN:
998 ret = GET_RX_DESC_PKT_LEN(pdesc);
999 break;
1000 case HW_DESC_RXBUFF_ADDR:
1001 ret = GET_RX_DESC_BUFF_ADDR(pdesc);
1002 break;
1003 default:
1004 WARN_ONCE(true,
1005 "rtl8192ee: ERR rxdesc :%d not processed\n",
1006 desc_name);
1007 break;
1008 }
1009 }
1010 return ret;
1011 }
1012
1013 bool rtl92ee_is_tx_desc_closed(struct ieee80211_hw *hw, u8 hw_queue, u16 index)
1014 {
1015 struct rtl_pci *rtlpci = rtl_pcidev(rtl_pcipriv(hw));
1016 struct rtl_priv *rtlpriv = rtl_priv(hw);
1017 u16 read_point, write_point;
1018 bool ret = false;
1019 static u8 stop_report_cnt;
1020 struct rtl8192_tx_ring *ring = &rtlpci->tx_ring[hw_queue];
1021
1022 {
1023 u16 cur_tx_rp, cur_tx_wp;
1024 u32 tmpu32 = 0;
1025
1026 tmpu32 =
1027 rtl_read_dword(rtlpriv,
1028 get_desc_addr_fr_q_idx(hw_queue));
1029 cur_tx_rp = (u16)((tmpu32 >> 16) & 0x0fff);
1030 cur_tx_wp = (u16)(tmpu32 & 0x0fff);
1031
1032 /* don't need to update ring->cur_tx_wp */
1033 ring->cur_tx_rp = cur_tx_rp;
1034 }
1035
1036 read_point = ring->cur_tx_rp;
1037 write_point = ring->cur_tx_wp;
1038
1039 if (write_point > read_point) {
1040 if (index < write_point && index >= read_point)
1041 ret = false;
1042 else
1043 ret = true;
1044 } else if (write_point < read_point) {
1045 if (index > write_point && index < read_point)
1046 ret = true;
1047 else
1048 ret = false;
1049 } else {
1050 if (index != read_point)
1051 ret = true;
1052 }
1053
1054 if (hw_queue == BEACON_QUEUE)
1055 ret = true;
1056
1057 if (rtlpriv->rtlhal.driver_is_goingto_unload ||
1058 rtlpriv->psc.rfoff_reason > RF_CHANGE_BY_PS)
1059 ret = true;
1060
1061 if (hw_queue < BEACON_QUEUE) {
1062 if (!ret)
1063 stop_report_cnt++;
1064 else
1065 stop_report_cnt = 0;
1066 }
1067
1068 return ret;
1069 }
1070
1071 void rtl92ee_tx_polling(struct ieee80211_hw *hw, u8 hw_queue)
1072 {
1073 }
1074
1075 u32 rtl92ee_rx_command_packet(struct ieee80211_hw *hw,
1076 const struct rtl_stats *status,
1077 struct sk_buff *skb)
1078 {
1079 u32 result = 0;
1080 struct rtl_priv *rtlpriv = rtl_priv(hw);
1081
1082 switch (status->packet_report_type) {
1083 case NORMAL_RX:
1084 result = 0;
1085 break;
1086 case C2H_PACKET:
1087 rtl92ee_c2h_packet_handler(hw, skb->data, (u8)skb->len);
1088 result = 1;
1089 break;
1090 default:
1091 RT_TRACE(rtlpriv, COMP_RECV, DBG_TRACE,
1092 "Unknown packet type %d\n", status->packet_report_type);
1093 break;
1094 }
1095
1096 return result;
1097 }
CRIS linux kernel tree