summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/rtlwifi/rtl8192cu/trx.c
blob: 763cf1defab5b4027b22604c3771e4c8465a4405 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
/******************************************************************************
 *
 * Copyright(c) 2009-2012  Realtek Corporation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <wlanfae@realtek.com>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <Larry.Finger@lwfinger.net>
 *
 *****************************************************************************/

#include "../wifi.h"
#include "../usb.h"
#include "../ps.h"
#include "../base.h"
#include "reg.h"
#include "def.h"
#include "phy.h"
#include "rf.h"
#include "dm.h"
#include "mac.h"
#include "trx.h"

static int _ConfigVerTOutEP(struct ieee80211_hw *hw)
{
	u8 ep_cfg, txqsele;
	u8 ep_nums = 0;

	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);

	rtlusb->out_queue_sel = 0;
	ep_cfg = rtl_read_byte(rtlpriv, REG_TEST_SIE_OPTIONAL);
	ep_cfg = (ep_cfg & USB_TEST_EP_MASK) >> USB_TEST_EP_SHIFT;
	switch (ep_cfg)	{
	case 0:		/* 2 bulk OUT, 1 bulk IN */
	case 3:
		rtlusb->out_queue_sel  = TX_SELE_HQ | TX_SELE_LQ;
		ep_nums = 2;
		break;
	case 1:	/* 1 bulk IN/OUT => map all endpoint to Low queue */
	case 2:	/* 1 bulk IN, 1 bulk OUT => map all endpoint to High queue */
		txqsele = rtl_read_byte(rtlpriv, REG_TEST_USB_TXQS);
		if (txqsele & 0x0F) /* /map all endpoint to High queue */
			rtlusb->out_queue_sel =  TX_SELE_HQ;
		else if (txqsele&0xF0) /* map all endpoint to Low queue */
			rtlusb->out_queue_sel =  TX_SELE_LQ;
		ep_nums = 1;
		break;
	default:
		break;
	}
	return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
}

static int _ConfigVerNOutEP(struct ieee80211_hw *hw)
{
	u8 ep_cfg;
	u8 ep_nums = 0;

	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);

	rtlusb->out_queue_sel = 0;
	/* Normal and High queue */
	ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 1));
	if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
		rtlusb->out_queue_sel |= TX_SELE_HQ;
		ep_nums++;
	}
	if ((ep_cfg >> USB_NORMAL_SIE_EP_SHIFT) & USB_NORMAL_SIE_EP_MASK) {
		rtlusb->out_queue_sel |= TX_SELE_NQ;
		ep_nums++;
	}
	/* Low queue */
	ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 2));
	if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
		rtlusb->out_queue_sel |= TX_SELE_LQ;
		ep_nums++;
	}
	return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
}

static void _TwoOutEpMapping(struct ieee80211_hw *hw, bool bIsChipB,
			     bool  bwificfg, struct rtl_ep_map *ep_map)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	if (bwificfg) { /* for WMM */
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			 "USB Chip-B & WMM Setting.....\n");
		ep_map->ep_mapping[RTL_TXQ_BE]	= 2;
		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
		ep_map->ep_mapping[RTL_TXQ_VO] = 2;
		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
	} else { /* typical setting */
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			 "USB typical Setting.....\n");
		ep_map->ep_mapping[RTL_TXQ_BE]	= 3;
		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
		ep_map->ep_mapping[RTL_TXQ_VI]	= 2;
		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
	}
}

static void _ThreeOutEpMapping(struct ieee80211_hw *hw, bool  bwificfg,
			       struct rtl_ep_map *ep_map)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	if (bwificfg) { /* for WMM */
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			 "USB 3EP Setting for WMM.....\n");
		ep_map->ep_mapping[RTL_TXQ_BE]	= 5;
		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
	} else { /* typical setting */
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			 "USB 3EP Setting for typical.....\n");
		ep_map->ep_mapping[RTL_TXQ_BE]	= 5;
		ep_map->ep_mapping[RTL_TXQ_BK]	= 5;
		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
	}
}

static void _OneOutEpMapping(struct ieee80211_hw *hw, struct rtl_ep_map *ep_map)
{
	ep_map->ep_mapping[RTL_TXQ_BE]	= 2;
	ep_map->ep_mapping[RTL_TXQ_BK]	= 2;
	ep_map->ep_mapping[RTL_TXQ_VI]	= 2;
	ep_map->ep_mapping[RTL_TXQ_VO] = 2;
	ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
	ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
	ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
}
static int _out_ep_mapping(struct ieee80211_hw *hw)
{
	int err = 0;
	bool bIsChipN, bwificfg = false;
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
	struct rtl_ep_map *ep_map = &(rtlusb->ep_map);

	bIsChipN = IS_NORMAL_CHIP(rtlhal->version);
	switch (rtlusb->out_ep_nums) {
	case 2:
		_TwoOutEpMapping(hw, bIsChipN, bwificfg, ep_map);
		break;
	case 3:
		/* Test chip doesn't support three out EPs. */
		if (!bIsChipN) {
			err  =  -EINVAL;
			goto err_out;
		}
		_ThreeOutEpMapping(hw, bIsChipN, ep_map);
		break;
	case 1:
		_OneOutEpMapping(hw, ep_map);
		break;
	default:
		err  =  -EINVAL;
		break;
	}
err_out:
	return err;

}
/* endpoint mapping */
int  rtl8192cu_endpoint_mapping(struct ieee80211_hw *hw)
{
	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
	int error = 0;
	if (likely(IS_NORMAL_CHIP(rtlhal->version)))
		error = _ConfigVerNOutEP(hw);
	else
		error = _ConfigVerTOutEP(hw);
	if (error)
		goto err_out;
	error = _out_ep_mapping(hw);
	if (error)
		goto err_out;
err_out:
	return error;
}

u16 rtl8192cu_mq_to_hwq(__le16 fc, u16 mac80211_queue_index)
{
	u16 hw_queue_index;

	if (unlikely(ieee80211_is_beacon(fc))) {
		hw_queue_index = RTL_TXQ_BCN;
		goto out;
	}
	if (ieee80211_is_mgmt(fc)) {
		hw_queue_index = RTL_TXQ_MGT;
		goto out;
	}
	switch (mac80211_queue_index) {
	case 0:
		hw_queue_index = RTL_TXQ_VO;
		break;
	case 1:
		hw_queue_index = RTL_TXQ_VI;
		break;
	case 2:
		hw_queue_index = RTL_TXQ_BE;
		break;
	case 3:
		hw_queue_index = RTL_TXQ_BK;
		break;
	default:
		hw_queue_index = RTL_TXQ_BE;
		RT_ASSERT(false, "QSLT_BE queue, skb_queue:%d\n",
			  mac80211_queue_index);
		break;
	}
out:
	return hw_queue_index;
}

static enum rtl_desc_qsel _rtl8192cu_mq_to_descq(struct ieee80211_hw *hw,
					 __le16 fc, u16 mac80211_queue_index)
{
	enum rtl_desc_qsel qsel;
	struct rtl_priv *rtlpriv = rtl_priv(hw);

	if (unlikely(ieee80211_is_beacon(fc))) {
		qsel = QSLT_BEACON;
		goto out;
	}
	if (ieee80211_is_mgmt(fc)) {
		qsel = QSLT_MGNT;
		goto out;
	}
	switch (mac80211_queue_index) {
	case 0:	/* VO */
		qsel = QSLT_VO;
		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
			 "VO queue, set qsel = 0x%x\n", QSLT_VO);
		break;
	case 1:	/* VI */
		qsel = QSLT_VI;
		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
			 "VI queue, set qsel = 0x%x\n", QSLT_VI);
		break;
	case 3:	/* BK */
		qsel = QSLT_BK;
		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
			 "BK queue, set qsel = 0x%x\n", QSLT_BK);
		break;
	case 2:	/* BE */
	default:
		qsel = QSLT_BE;
		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
			 "BE queue, set qsel = 0x%x\n", QSLT_BE);
		break;
	}
out:
	return qsel;
}

/* =============================================================== */

/*----------------------------------------------------------------------
 *
 *	Rx handler
 *
 *---------------------------------------------------------------------- */
bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
			   struct rtl_stats *stats,
			   struct ieee80211_rx_status *rx_status,
			   u8 *p_desc, struct sk_buff *skb)
{
	struct rx_fwinfo_92c *p_drvinfo;
	struct rx_desc_92c *pdesc = (struct rx_desc_92c *)p_desc;
	u32 phystatus = GET_RX_DESC_PHY_STATUS(pdesc);

	stats->length = (u16) GET_RX_DESC_PKT_LEN(pdesc);
	stats->rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(pdesc) *
				 RX_DRV_INFO_SIZE_UNIT;
	stats->rx_bufshift = (u8) (GET_RX_DESC_SHIFT(pdesc) & 0x03);
	stats->icv = (u16) GET_RX_DESC_ICV(pdesc);
	stats->crc = (u16) GET_RX_DESC_CRC32(pdesc);
	stats->hwerror = (stats->crc | stats->icv);
	stats->decrypted = !GET_RX_DESC_SWDEC(pdesc);
	stats->rate = (u8) GET_RX_DESC_RX_MCS(pdesc);
	stats->shortpreamble = (u16) GET_RX_DESC_SPLCP(pdesc);
	stats->isampdu = (bool) (GET_RX_DESC_PAGGR(pdesc) == 1);
	stats->isampdu = (bool) ((GET_RX_DESC_PAGGR(pdesc) == 1)
				   && (GET_RX_DESC_FAGGR(pdesc) == 1));
	stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
	stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
	rx_status->freq = hw->conf.chandef.chan->center_freq;
	rx_status->band = hw->conf.chandef.chan->band;
	if (GET_RX_DESC_CRC32(pdesc))
		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
	if (!GET_RX_DESC_SWDEC(pdesc))
		rx_status->flag |= RX_FLAG_DECRYPTED;
	if (GET_RX_DESC_BW(pdesc))
		rx_status->flag |= RX_FLAG_40MHZ;
	if (GET_RX_DESC_RX_HT(pdesc))
		rx_status->flag |= RX_FLAG_HT;
	rx_status->flag |= RX_FLAG_MACTIME_START;
	if (stats->decrypted)
		rx_status->flag |= RX_FLAG_DECRYPTED;
	rx_status->rate_idx = rtlwifi_rate_mapping(hw,
					(bool)GET_RX_DESC_RX_HT(pdesc),
					(u8)GET_RX_DESC_RX_MCS(pdesc),
					(bool)GET_RX_DESC_PAGGR(pdesc));
	rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
	if (phystatus) {
		p_drvinfo = (struct rx_fwinfo_92c *)(pdesc + RTL_RX_DESC_SIZE);
		rtl92c_translate_rx_signal_stuff(hw, skb, stats, pdesc,
						 p_drvinfo);
	}
	/*rx_status->qual = stats->signal; */
	rx_status->signal = stats->rssi + 10;
	/*rx_status->noise = -stats->noise; */
	return true;
}

#define RTL_RX_DRV_INFO_UNIT		8

static void _rtl_rx_process(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	struct ieee80211_rx_status *rx_status =
		 (struct ieee80211_rx_status *)IEEE80211_SKB_RXCB(skb);
	u32 skb_len, pkt_len, drvinfo_len;
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u8 *rxdesc;
	struct rtl_stats stats = {
		.signal = 0,
		.noise = -98,
		.rate = 0,
	};
	struct rx_fwinfo_92c *p_drvinfo;
	bool bv;
	__le16 fc;
	struct ieee80211_hdr *hdr;

	memset(rx_status, 0, sizeof(*rx_status));
	rxdesc	= skb->data;
	skb_len	= skb->len;
	drvinfo_len = (GET_RX_DESC_DRVINFO_SIZE(rxdesc) * RTL_RX_DRV_INFO_UNIT);
	pkt_len		= GET_RX_DESC_PKT_LEN(rxdesc);
	/* TODO: Error recovery. drop this skb or something. */
	WARN_ON(skb_len < (pkt_len + RTL_RX_DESC_SIZE + drvinfo_len));
	stats.length = (u16) GET_RX_DESC_PKT_LEN(rxdesc);
	stats.rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(rxdesc) *
				RX_DRV_INFO_SIZE_UNIT;
	stats.rx_bufshift = (u8) (GET_RX_DESC_SHIFT(rxdesc) & 0x03);
	stats.icv = (u16) GET_RX_DESC_ICV(rxdesc);
	stats.crc = (u16) GET_RX_DESC_CRC32(rxdesc);
	stats.hwerror = (stats.crc | stats.icv);
	stats.decrypted = !GET_RX_DESC_SWDEC(rxdesc);
	stats.rate = (u8) GET_RX_DESC_RX_MCS(rxdesc);
	stats.shortpreamble = (u16) GET_RX_DESC_SPLCP(rxdesc);
	stats.isampdu = (bool) ((GET_RX_DESC_PAGGR(rxdesc) == 1)
				   && (GET_RX_DESC_FAGGR(rxdesc) == 1));
	stats.timestamp_low = GET_RX_DESC_TSFL(rxdesc);
	stats.rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(rxdesc);
	/* TODO: is center_freq changed when doing scan? */
	/* TODO: Shall we add protection or just skip those two step? */
	rx_status->freq = hw->conf.chandef.chan->center_freq;
	rx_status->band = hw->conf.chandef.chan->band;
	if (GET_RX_DESC_CRC32(rxdesc))
		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
	if (!GET_RX_DESC_SWDEC(rxdesc))
		rx_status->flag |= RX_FLAG_DECRYPTED;
	if (GET_RX_DESC_BW(rxdesc))
		rx_status->flag |= RX_FLAG_40MHZ;
	if (GET_RX_DESC_RX_HT(rxdesc))
		rx_status->flag |= RX_FLAG_HT;
	/* Data rate */
	rx_status->rate_idx = rtlwifi_rate_mapping(hw,
					(bool)GET_RX_DESC_RX_HT(rxdesc),
					(u8)GET_RX_DESC_RX_MCS(rxdesc),
					(bool)GET_RX_DESC_PAGGR(rxdesc));
	/*  There is a phy status after this rx descriptor. */
	if (GET_RX_DESC_PHY_STATUS(rxdesc)) {
		p_drvinfo = (struct rx_fwinfo_92c *)(rxdesc + RTL_RX_DESC_SIZE);
		rtl92c_translate_rx_signal_stuff(hw, skb, &stats,
				 (struct rx_desc_92c *)rxdesc, p_drvinfo);
	}
	skb_pull(skb, (drvinfo_len + RTL_RX_DESC_SIZE));
	hdr = (struct ieee80211_hdr *)(skb->data);
	fc = hdr->frame_control;
	bv = ieee80211_is_probe_resp(fc);
	if (bv)
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
			 "Got probe response frame\n");
	if (ieee80211_is_beacon(fc))
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got beacon frame\n");
	if (ieee80211_is_data(fc))
		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got data frame\n");
	RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
		 "Fram: fc = 0x%X addr1 = 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:0x%02X\n",
		 fc,
		 (u32)hdr->addr1[0], (u32)hdr->addr1[1],
		 (u32)hdr->addr1[2], (u32)hdr->addr1[3],
		 (u32)hdr->addr1[4], (u32)hdr->addr1[5]);
	memcpy(IEEE80211_SKB_RXCB(skb), rx_status, sizeof(*rx_status));
	ieee80211_rx(hw, skb);
}

void  rtl8192cu_rx_hdl(struct ieee80211_hw *hw, struct sk_buff * skb)
{
	_rtl_rx_process(hw, skb);
}

void rtl8192c_rx_segregate_hdl(
	struct ieee80211_hw *hw,
	struct sk_buff *skb,
	struct sk_buff_head *skb_list)
{
}

/*----------------------------------------------------------------------
 *
 *	Tx handler
 *
 *---------------------------------------------------------------------- */
void rtl8192c_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff  *skb)
{
}

int rtl8192c_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
			 struct sk_buff *skb)
{
	return 0;
}

struct sk_buff *rtl8192c_tx_aggregate_hdl(struct ieee80211_hw *hw,
					   struct sk_buff_head *list)
{
	return skb_dequeue(list);
}

/*======================================== trx ===============================*/

static void _rtl_fill_usb_tx_desc(u8 *txdesc)
{
	SET_TX_DESC_OWN(txdesc, 1);
	SET_TX_DESC_LAST_SEG(txdesc, 1);
	SET_TX_DESC_FIRST_SEG(txdesc, 1);
}
/**
 *	For HW recovery information
 */
static void _rtl_tx_desc_checksum(u8 *txdesc)
{
	u16 *ptr = (u16 *)txdesc;
	u16	checksum = 0;
	u32 index;

	/* Clear first */
	SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, 0);
	for (index = 0; index < 16; index++)
		checksum = checksum ^ (*(ptr + index));
	SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, checksum);
}

void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
			  struct ieee80211_tx_info *info,
			  struct ieee80211_sta *sta,
			  struct sk_buff *skb,
			  u8 queue_index,
			  struct rtl_tcb_desc *tcb_desc)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
	bool defaultadapter = true;
	u8 *qc = ieee80211_get_qos_ctl(hdr);
	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
	u16 seq_number;
	__le16 fc = hdr->frame_control;
	u8 rate_flag = info->control.rates[0].flags;
	u16 pktlen = skb->len;
	enum rtl_desc_qsel fw_qsel = _rtl8192cu_mq_to_descq(hw, fc,
						skb_get_queue_mapping(skb));
	u8 *txdesc;

	seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
	rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
	txdesc = (u8 *)skb_push(skb, RTL_TX_HEADER_SIZE);
	memset(txdesc, 0, RTL_TX_HEADER_SIZE);
	SET_TX_DESC_PKT_SIZE(txdesc, pktlen);
	SET_TX_DESC_LINIP(txdesc, 0);
	SET_TX_DESC_PKT_OFFSET(txdesc, RTL_DUMMY_OFFSET);
	SET_TX_DESC_OFFSET(txdesc, RTL_TX_HEADER_SIZE);
	SET_TX_DESC_TX_RATE(txdesc, tcb_desc->hw_rate);
	if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
		SET_TX_DESC_DATA_SHORTGI(txdesc, 1);
	if (mac->tids[tid].agg.agg_state == RTL_AGG_ON &&
		    info->flags & IEEE80211_TX_CTL_AMPDU) {
		SET_TX_DESC_AGG_ENABLE(txdesc, 1);
		SET_TX_DESC_MAX_AGG_NUM(txdesc, 0x14);
	} else {
		SET_TX_DESC_AGG_BREAK(txdesc, 1);
	}
	SET_TX_DESC_SEQ(txdesc, seq_number);
	SET_TX_DESC_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable &&
			       !tcb_desc->cts_enable) ? 1 : 0));
	SET_TX_DESC_HW_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable ||
				  tcb_desc->cts_enable) ? 1 : 0));
	SET_TX_DESC_CTS2SELF(txdesc, ((tcb_desc->cts_enable) ? 1 : 0));
	SET_TX_DESC_RTS_STBC(txdesc, ((tcb_desc->rts_stbc) ? 1 : 0));
	SET_TX_DESC_RTS_RATE(txdesc, tcb_desc->rts_rate);
	SET_TX_DESC_RTS_BW(txdesc, 0);
	SET_TX_DESC_RTS_SC(txdesc, tcb_desc->rts_sc);
	SET_TX_DESC_RTS_SHORT(txdesc,
			      ((tcb_desc->rts_rate <= DESC92_RATE54M) ?
			       (tcb_desc->rts_use_shortpreamble ? 1 : 0)
			       : (tcb_desc->rts_use_shortgi ? 1 : 0)));
	if (mac->bw_40) {
		if (rate_flag & IEEE80211_TX_RC_DUP_DATA) {
			SET_TX_DESC_DATA_BW(txdesc, 1);
			SET_TX_DESC_DATA_SC(txdesc, 3);
		} else if(rate_flag & IEEE80211_TX_RC_40_MHZ_WIDTH){
			SET_TX_DESC_DATA_BW(txdesc, 1);
			SET_TX_DESC_DATA_SC(txdesc, mac->cur_40_prime_sc);
		} else {
			SET_TX_DESC_DATA_BW(txdesc, 0);
			SET_TX_DESC_DATA_SC(txdesc, 0);
		}
	} else {
		SET_TX_DESC_DATA_BW(txdesc, 0);
		SET_TX_DESC_DATA_SC(txdesc, 0);
	}
	rcu_read_lock();
	sta = ieee80211_find_sta(mac->vif, mac->bssid);
	if (sta) {
		u8 ampdu_density = sta->ht_cap.ampdu_density;
		SET_TX_DESC_AMPDU_DENSITY(txdesc, ampdu_density);
	}
	rcu_read_unlock();
	if (info->control.hw_key) {
		struct ieee80211_key_conf *keyconf = info->control.hw_key;
		switch (keyconf->cipher) {
		case WLAN_CIPHER_SUITE_WEP40:
		case WLAN_CIPHER_SUITE_WEP104:
		case WLAN_CIPHER_SUITE_TKIP:
			SET_TX_DESC_SEC_TYPE(txdesc, 0x1);
			break;
		case WLAN_CIPHER_SUITE_CCMP:
			SET_TX_DESC_SEC_TYPE(txdesc, 0x3);
			break;
		default:
			SET_TX_DESC_SEC_TYPE(txdesc, 0x0);
			break;
		}
	}
	SET_TX_DESC_PKT_ID(txdesc, 0);
	SET_TX_DESC_QUEUE_SEL(txdesc, fw_qsel);
	SET_TX_DESC_DATA_RATE_FB_LIMIT(txdesc, 0x1F);
	SET_TX_DESC_RTS_RATE_FB_LIMIT(txdesc, 0xF);
	SET_TX_DESC_DISABLE_FB(txdesc, 0);
	SET_TX_DESC_USE_RATE(txdesc, tcb_desc->use_driver_rate ? 1 : 0);
	if (ieee80211_is_data_qos(fc)) {
		if (mac->rdg_en) {
			RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
				 "Enable RDG function\n");
			SET_TX_DESC_RDG_ENABLE(txdesc, 1);
			SET_TX_DESC_HTC(txdesc, 1);
		}
	}
	if (rtlpriv->dm.useramask) {
		SET_TX_DESC_RATE_ID(txdesc, tcb_desc->ratr_index);
		SET_TX_DESC_MACID(txdesc, tcb_desc->mac_id);
	} else {
		SET_TX_DESC_RATE_ID(txdesc, 0xC + tcb_desc->ratr_index);
		SET_TX_DESC_MACID(txdesc, tcb_desc->ratr_index);
	}
	if ((!ieee80211_is_data_qos(fc)) && ppsc->leisure_ps &&
	      ppsc->fwctrl_lps) {
		SET_TX_DESC_HWSEQ_EN(txdesc, 1);
		SET_TX_DESC_PKT_ID(txdesc, 8);
		if (!defaultadapter)
			SET_TX_DESC_QOS(txdesc, 1);
	}
	if (ieee80211_has_morefrags(fc))
		SET_TX_DESC_MORE_FRAG(txdesc, 1);
	if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
	    is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
		SET_TX_DESC_BMC(txdesc, 1);
	_rtl_fill_usb_tx_desc(txdesc);
	_rtl_tx_desc_checksum(txdesc);
	RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "==>\n");
}

void rtl92cu_fill_fake_txdesc(struct ieee80211_hw *hw, u8 * pDesc,
			      u32 buffer_len, bool bIsPsPoll)
{
	/* Clear all status */
	memset(pDesc, 0, RTL_TX_HEADER_SIZE);
	SET_TX_DESC_FIRST_SEG(pDesc, 1); /* bFirstSeg; */
	SET_TX_DESC_LAST_SEG(pDesc, 1); /* bLastSeg; */
	SET_TX_DESC_OFFSET(pDesc, RTL_TX_HEADER_SIZE); /* Offset = 32 */
	SET_TX_DESC_PKT_SIZE(pDesc, buffer_len); /* Buffer size + command hdr */
	SET_TX_DESC_QUEUE_SEL(pDesc, QSLT_MGNT); /* Fixed queue of Mgnt queue */
	/* Set NAVUSEHDR to prevent Ps-poll AId filed to be changed to error
	 * vlaue by Hw. */
	if (bIsPsPoll) {
		SET_TX_DESC_NAV_USE_HDR(pDesc, 1);
	} else {
		SET_TX_DESC_HWSEQ_EN(pDesc, 1); /* Hw set sequence number */
		SET_TX_DESC_PKT_ID(pDesc, 0x100); /* set bit3 to 1. */
	}
	SET_TX_DESC_USE_RATE(pDesc, 1); /* use data rate which is set by Sw */
	SET_TX_DESC_OWN(pDesc, 1);
	SET_TX_DESC_TX_RATE(pDesc, DESC92_RATE1M);
	_rtl_tx_desc_checksum(pDesc);
}

void rtl92cu_tx_fill_cmddesc(struct ieee80211_hw *hw,
			     u8 *pdesc, bool firstseg,
			     bool lastseg, struct sk_buff *skb)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	u8 fw_queue = QSLT_BEACON;
	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
	__le16 fc = hdr->frame_control;

	memset((void *)pdesc, 0, RTL_TX_HEADER_SIZE);
	if (firstseg)
		SET_TX_DESC_OFFSET(pdesc, RTL_TX_HEADER_SIZE);
	SET_TX_DESC_TX_RATE(pdesc, DESC92_RATE1M);
	SET_TX_DESC_SEQ(pdesc, 0);
	SET_TX_DESC_LINIP(pdesc, 0);
	SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
	SET_TX_DESC_FIRST_SEG(pdesc, 1);
	SET_TX_DESC_LAST_SEG(pdesc, 1);
	SET_TX_DESC_RATE_ID(pdesc, 7);
	SET_TX_DESC_MACID(pdesc, 0);
	SET_TX_DESC_OWN(pdesc, 1);
	SET_TX_DESC_PKT_SIZE(pdesc, (u16)skb->len);
	SET_TX_DESC_FIRST_SEG(pdesc, 1);
	SET_TX_DESC_LAST_SEG(pdesc, 1);
	SET_TX_DESC_OFFSET(pdesc, 0x20);
	SET_TX_DESC_USE_RATE(pdesc, 1);
	if (!ieee80211_is_data_qos(fc)) {
		SET_TX_DESC_HWSEQ_EN(pdesc, 1);
		SET_TX_DESC_PKT_ID(pdesc, 8);
	}
	RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD, "H2C Tx Cmd Content",
		      pdesc, RTL_TX_DESC_SIZE);
}

bool rtl92cu_cmd_send_packet(struct ieee80211_hw *hw, struct sk_buff *skb)
{
	return true;
}
OpenPOWER on IntegriCloud