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 "../usb.h"
28 #include "../ps.h"
29 #include "../base.h"
30 #include "reg.h"
31 #include "def.h"
32 #include "phy.h"
33 #include "rf.h"
34 #include "dm.h"
35 #include "mac.h"
36 #include "trx.h"
37 #include "../rtl8192c/fw_common.h"
38 
39 static int _ConfigVerTOutEP(struct ieee80211_hw *hw)
40 {
41 	u8 ep_cfg, txqsele;
42 	u8 ep_nums = 0;
43 
44 	struct rtl_priv *rtlpriv = rtl_priv(hw);
45 	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
46 	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
47 
48 	rtlusb->out_queue_sel = 0;
49 	ep_cfg = rtl_read_byte(rtlpriv, REG_TEST_SIE_OPTIONAL);
50 	ep_cfg = (ep_cfg & USB_TEST_EP_MASK) >> USB_TEST_EP_SHIFT;
51 	switch (ep_cfg)	{
52 	case 0:		/* 2 bulk OUT, 1 bulk IN */
53 	case 3:
54 		rtlusb->out_queue_sel  = TX_SELE_HQ | TX_SELE_LQ;
55 		ep_nums = 2;
56 		break;
57 	case 1:	/* 1 bulk IN/OUT => map all endpoint to Low queue */
58 	case 2:	/* 1 bulk IN, 1 bulk OUT => map all endpoint to High queue */
59 		txqsele = rtl_read_byte(rtlpriv, REG_TEST_USB_TXQS);
60 		if (txqsele & 0x0F) /* /map all endpoint to High queue */
61 			rtlusb->out_queue_sel =  TX_SELE_HQ;
62 		else if (txqsele&0xF0) /* map all endpoint to Low queue */
63 			rtlusb->out_queue_sel =  TX_SELE_LQ;
64 		ep_nums = 1;
65 		break;
66 	default:
67 		break;
68 	}
69 	return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
70 }
71 
72 static int _ConfigVerNOutEP(struct ieee80211_hw *hw)
73 {
74 	u8 ep_cfg;
75 	u8 ep_nums = 0;
76 
77 	struct rtl_priv *rtlpriv = rtl_priv(hw);
78 	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
79 	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
80 
81 	rtlusb->out_queue_sel = 0;
82 	/* Normal and High queue */
83 	ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 1));
84 	if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
85 		rtlusb->out_queue_sel |= TX_SELE_HQ;
86 		ep_nums++;
87 	}
88 	if ((ep_cfg >> USB_NORMAL_SIE_EP_SHIFT) & USB_NORMAL_SIE_EP_MASK) {
89 		rtlusb->out_queue_sel |= TX_SELE_NQ;
90 		ep_nums++;
91 	}
92 	/* Low queue */
93 	ep_cfg =  rtl_read_byte(rtlpriv, (REG_NORMAL_SIE_EP + 2));
94 	if (ep_cfg & USB_NORMAL_SIE_EP_MASK) {
95 		rtlusb->out_queue_sel |= TX_SELE_LQ;
96 		ep_nums++;
97 	}
98 	return (rtlusb->out_ep_nums == ep_nums) ? 0 : -EINVAL;
99 }
100 
101 static void _TwoOutEpMapping(struct ieee80211_hw *hw, bool bIsChipB,
102 			     bool  bwificfg, struct rtl_ep_map *ep_map)
103 {
104 	struct rtl_priv *rtlpriv = rtl_priv(hw);
105 
106 	if (bwificfg) { /* for WMM */
107 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
108 			 "USB Chip-B & WMM Setting.....\n");
109 		ep_map->ep_mapping[RTL_TXQ_BE]	= 2;
110 		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
111 		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
112 		ep_map->ep_mapping[RTL_TXQ_VO] = 2;
113 		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
114 		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
115 		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
116 	} else { /* typical setting */
117 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
118 			 "USB typical Setting.....\n");
119 		ep_map->ep_mapping[RTL_TXQ_BE]	= 3;
120 		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
121 		ep_map->ep_mapping[RTL_TXQ_VI]	= 2;
122 		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
123 		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
124 		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
125 		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
126 	}
127 }
128 
129 static void _ThreeOutEpMapping(struct ieee80211_hw *hw, bool  bwificfg,
130 			       struct rtl_ep_map *ep_map)
131 {
132 	struct rtl_priv *rtlpriv = rtl_priv(hw);
133 	if (bwificfg) { /* for WMM */
134 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
135 			 "USB 3EP Setting for WMM.....\n");
136 		ep_map->ep_mapping[RTL_TXQ_BE]	= 5;
137 		ep_map->ep_mapping[RTL_TXQ_BK]	= 3;
138 		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
139 		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
140 		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
141 		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
142 		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
143 	} else { /* typical setting */
144 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
145 			 "USB 3EP Setting for typical.....\n");
146 		ep_map->ep_mapping[RTL_TXQ_BE]	= 5;
147 		ep_map->ep_mapping[RTL_TXQ_BK]	= 5;
148 		ep_map->ep_mapping[RTL_TXQ_VI]	= 3;
149 		ep_map->ep_mapping[RTL_TXQ_VO]	= 2;
150 		ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
151 		ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
152 		ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
153 	}
154 }
155 
156 static void _OneOutEpMapping(struct ieee80211_hw *hw, struct rtl_ep_map *ep_map)
157 {
158 	ep_map->ep_mapping[RTL_TXQ_BE]	= 2;
159 	ep_map->ep_mapping[RTL_TXQ_BK]	= 2;
160 	ep_map->ep_mapping[RTL_TXQ_VI]	= 2;
161 	ep_map->ep_mapping[RTL_TXQ_VO] = 2;
162 	ep_map->ep_mapping[RTL_TXQ_MGT] = 2;
163 	ep_map->ep_mapping[RTL_TXQ_BCN] = 2;
164 	ep_map->ep_mapping[RTL_TXQ_HI]	= 2;
165 }
166 static int _out_ep_mapping(struct ieee80211_hw *hw)
167 {
168 	int err = 0;
169 	bool bIsChipN, bwificfg = false;
170 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
171 	struct rtl_usb_priv *usb_priv = rtl_usbpriv(hw);
172 	struct rtl_usb *rtlusb = rtl_usbdev(usb_priv);
173 	struct rtl_ep_map *ep_map = &(rtlusb->ep_map);
174 
175 	bIsChipN = IS_NORMAL_CHIP(rtlhal->version);
176 	switch (rtlusb->out_ep_nums) {
177 	case 2:
178 		_TwoOutEpMapping(hw, bIsChipN, bwificfg, ep_map);
179 		break;
180 	case 3:
181 		/* Test chip doesn't support three out EPs. */
182 		if (!bIsChipN) {
183 			err  =  -EINVAL;
184 			goto err_out;
185 		}
186 		_ThreeOutEpMapping(hw, bIsChipN, ep_map);
187 		break;
188 	case 1:
189 		_OneOutEpMapping(hw, ep_map);
190 		break;
191 	default:
192 		err  =  -EINVAL;
193 		break;
194 	}
195 err_out:
196 	return err;
197 
198 }
199 /* endpoint mapping */
200 int  rtl8192cu_endpoint_mapping(struct ieee80211_hw *hw)
201 {
202 	struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
203 	int error = 0;
204 	if (likely(IS_NORMAL_CHIP(rtlhal->version)))
205 		error = _ConfigVerNOutEP(hw);
206 	else
207 		error = _ConfigVerTOutEP(hw);
208 	if (error)
209 		goto err_out;
210 	error = _out_ep_mapping(hw);
211 	if (error)
212 		goto err_out;
213 err_out:
214 	return error;
215 }
216 
217 u16 rtl8192cu_mq_to_hwq(__le16 fc, u16 mac80211_queue_index)
218 {
219 	u16 hw_queue_index;
220 
221 	if (unlikely(ieee80211_is_beacon(fc))) {
222 		hw_queue_index = RTL_TXQ_BCN;
223 		goto out;
224 	}
225 	if (ieee80211_is_mgmt(fc)) {
226 		hw_queue_index = RTL_TXQ_MGT;
227 		goto out;
228 	}
229 	switch (mac80211_queue_index) {
230 	case 0:
231 		hw_queue_index = RTL_TXQ_VO;
232 		break;
233 	case 1:
234 		hw_queue_index = RTL_TXQ_VI;
235 		break;
236 	case 2:
237 		hw_queue_index = RTL_TXQ_BE;
238 		break;
239 	case 3:
240 		hw_queue_index = RTL_TXQ_BK;
241 		break;
242 	default:
243 		hw_queue_index = RTL_TXQ_BE;
244 		WARN_ONCE(true, "rtl8192cu: QSLT_BE queue, skb_queue:%d\n",
245 			  mac80211_queue_index);
246 		break;
247 	}
248 out:
249 	return hw_queue_index;
250 }
251 
252 static enum rtl_desc_qsel _rtl8192cu_mq_to_descq(struct ieee80211_hw *hw,
253 					 __le16 fc, u16 mac80211_queue_index)
254 {
255 	enum rtl_desc_qsel qsel;
256 	struct rtl_priv *rtlpriv = rtl_priv(hw);
257 
258 	if (unlikely(ieee80211_is_beacon(fc))) {
259 		qsel = QSLT_BEACON;
260 		goto out;
261 	}
262 	if (ieee80211_is_mgmt(fc)) {
263 		qsel = QSLT_MGNT;
264 		goto out;
265 	}
266 	switch (mac80211_queue_index) {
267 	case 0:	/* VO */
268 		qsel = QSLT_VO;
269 		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
270 			 "VO queue, set qsel = 0x%x\n", QSLT_VO);
271 		break;
272 	case 1:	/* VI */
273 		qsel = QSLT_VI;
274 		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
275 			 "VI queue, set qsel = 0x%x\n", QSLT_VI);
276 		break;
277 	case 3:	/* BK */
278 		qsel = QSLT_BK;
279 		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
280 			 "BK queue, set qsel = 0x%x\n", QSLT_BK);
281 		break;
282 	case 2:	/* BE */
283 	default:
284 		qsel = QSLT_BE;
285 		RT_TRACE(rtlpriv, COMP_USB, DBG_DMESG,
286 			 "BE queue, set qsel = 0x%x\n", QSLT_BE);
287 		break;
288 	}
289 out:
290 	return qsel;
291 }
292 
293 /* =============================================================== */
294 
295 /*----------------------------------------------------------------------
296  *
297  *	Rx handler
298  *
299  *---------------------------------------------------------------------- */
300 bool rtl92cu_rx_query_desc(struct ieee80211_hw *hw,
301 			   struct rtl_stats *stats,
302 			   struct ieee80211_rx_status *rx_status,
303 			   u8 *pdesc, struct sk_buff *skb)
304 {
305 	struct rx_fwinfo_92c *p_drvinfo;
306 	struct rx_desc_92c *p_desc = (struct rx_desc_92c *)pdesc;
307 	u32 phystatus = GET_RX_DESC_PHY_STATUS(pdesc);
308 
309 	stats->length = (u16) GET_RX_DESC_PKT_LEN(pdesc);
310 	stats->rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(pdesc) *
311 				 RX_DRV_INFO_SIZE_UNIT;
312 	stats->rx_bufshift = (u8) (GET_RX_DESC_SHIFT(pdesc) & 0x03);
313 	stats->icv = (u16) GET_RX_DESC_ICV(pdesc);
314 	stats->crc = (u16) GET_RX_DESC_CRC32(pdesc);
315 	stats->hwerror = (stats->crc | stats->icv);
316 	stats->decrypted = !GET_RX_DESC_SWDEC(pdesc);
317 	stats->rate = (u8) GET_RX_DESC_RX_MCS(pdesc);
318 	stats->shortpreamble = (u16) GET_RX_DESC_SPLCP(pdesc);
319 	stats->isampdu = (bool) (GET_RX_DESC_PAGGR(pdesc) == 1);
320 	stats->isfirst_ampdu = (bool)((GET_RX_DESC_PAGGR(pdesc) == 1)
321 				   && (GET_RX_DESC_FAGGR(pdesc) == 1));
322 	stats->timestamp_low = GET_RX_DESC_TSFL(pdesc);
323 	stats->rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(pdesc);
324 	stats->is_ht = (bool)GET_RX_DESC_RX_HT(pdesc);
325 	rx_status->freq = hw->conf.chandef.chan->center_freq;
326 	rx_status->band = hw->conf.chandef.chan->band;
327 	if (GET_RX_DESC_CRC32(pdesc))
328 		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
329 	if (!GET_RX_DESC_SWDEC(pdesc))
330 		rx_status->flag |= RX_FLAG_DECRYPTED;
331 	if (GET_RX_DESC_BW(pdesc))
332 		rx_status->bw = RATE_INFO_BW_40;
333 	if (GET_RX_DESC_RX_HT(pdesc))
334 		rx_status->encoding = RX_ENC_HT;
335 	rx_status->flag |= RX_FLAG_MACTIME_START;
336 	if (stats->decrypted)
337 		rx_status->flag |= RX_FLAG_DECRYPTED;
338 	rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats->is_ht,
339 						   false, stats->rate);
340 	rx_status->mactime = GET_RX_DESC_TSFL(pdesc);
341 	if (phystatus) {
342 		p_drvinfo = (struct rx_fwinfo_92c *)(skb->data +
343 						     stats->rx_bufshift);
344 		rtl92c_translate_rx_signal_stuff(hw, skb, stats, p_desc,
345 						 p_drvinfo);
346 	}
347 	/*rx_status->qual = stats->signal; */
348 	rx_status->signal = stats->recvsignalpower + 10;
349 	return true;
350 }
351 
352 #define RTL_RX_DRV_INFO_UNIT		8
353 
354 static void _rtl_rx_process(struct ieee80211_hw *hw, struct sk_buff *skb)
355 {
356 	struct ieee80211_rx_status *rx_status =
357 		 (struct ieee80211_rx_status *)IEEE80211_SKB_RXCB(skb);
358 	u32 skb_len, pkt_len, drvinfo_len;
359 	struct rtl_priv *rtlpriv = rtl_priv(hw);
360 	u8 *rxdesc;
361 	struct rtl_stats stats = {
362 		.signal = 0,
363 		.rate = 0,
364 	};
365 	struct rx_fwinfo_92c *p_drvinfo;
366 	bool bv;
367 	__le16 fc;
368 	struct ieee80211_hdr *hdr;
369 
370 	memset(rx_status, 0, sizeof(*rx_status));
371 	rxdesc	= skb->data;
372 	skb_len	= skb->len;
373 	drvinfo_len = (GET_RX_DESC_DRVINFO_SIZE(rxdesc) * RTL_RX_DRV_INFO_UNIT);
374 	pkt_len		= GET_RX_DESC_PKT_LEN(rxdesc);
375 	/* TODO: Error recovery. drop this skb or something. */
376 	WARN_ON(skb_len < (pkt_len + RTL_RX_DESC_SIZE + drvinfo_len));
377 	stats.length = (u16) GET_RX_DESC_PKT_LEN(rxdesc);
378 	stats.rx_drvinfo_size = (u8)GET_RX_DESC_DRVINFO_SIZE(rxdesc) *
379 				RX_DRV_INFO_SIZE_UNIT;
380 	stats.rx_bufshift = (u8) (GET_RX_DESC_SHIFT(rxdesc) & 0x03);
381 	stats.icv = (u16) GET_RX_DESC_ICV(rxdesc);
382 	stats.crc = (u16) GET_RX_DESC_CRC32(rxdesc);
383 	stats.hwerror = (stats.crc | stats.icv);
384 	stats.decrypted = !GET_RX_DESC_SWDEC(rxdesc);
385 	stats.rate = (u8) GET_RX_DESC_RX_MCS(rxdesc);
386 	stats.shortpreamble = (u16) GET_RX_DESC_SPLCP(rxdesc);
387 	stats.isampdu = (bool) ((GET_RX_DESC_PAGGR(rxdesc) == 1)
388 				   && (GET_RX_DESC_FAGGR(rxdesc) == 1));
389 	stats.timestamp_low = GET_RX_DESC_TSFL(rxdesc);
390 	stats.rx_is40Mhzpacket = (bool) GET_RX_DESC_BW(rxdesc);
391 	stats.is_ht = (bool)GET_RX_DESC_RX_HT(rxdesc);
392 	/* TODO: is center_freq changed when doing scan? */
393 	/* TODO: Shall we add protection or just skip those two step? */
394 	rx_status->freq = hw->conf.chandef.chan->center_freq;
395 	rx_status->band = hw->conf.chandef.chan->band;
396 	if (GET_RX_DESC_CRC32(rxdesc))
397 		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
398 	if (!GET_RX_DESC_SWDEC(rxdesc))
399 		rx_status->flag |= RX_FLAG_DECRYPTED;
400 	if (GET_RX_DESC_BW(rxdesc))
401 		rx_status->bw = RATE_INFO_BW_40;
402 	if (GET_RX_DESC_RX_HT(rxdesc))
403 		rx_status->encoding = RX_ENC_HT;
404 	/* Data rate */
405 	rx_status->rate_idx = rtlwifi_rate_mapping(hw, stats.is_ht,
406 						   false, stats.rate);
407 	/*  There is a phy status after this rx descriptor. */
408 	if (GET_RX_DESC_PHY_STATUS(rxdesc)) {
409 		p_drvinfo = (struct rx_fwinfo_92c *)(rxdesc + RTL_RX_DESC_SIZE);
410 		rtl92c_translate_rx_signal_stuff(hw, skb, &stats,
411 				 (struct rx_desc_92c *)rxdesc, p_drvinfo);
412 	}
413 	skb_pull(skb, (drvinfo_len + RTL_RX_DESC_SIZE));
414 	hdr = (struct ieee80211_hdr *)(skb->data);
415 	fc = hdr->frame_control;
416 	bv = ieee80211_is_probe_resp(fc);
417 	if (bv)
418 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
419 			 "Got probe response frame\n");
420 	if (ieee80211_is_beacon(fc))
421 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got beacon frame\n");
422 	if (ieee80211_is_data(fc))
423 		RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "Got data frame\n");
424 	RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
425 		 "Fram: fc = 0x%X addr1 = 0x%02X:0x%02X:0x%02X:0x%02X:0x%02X:0x%02X\n",
426 		 fc,
427 		 (u32)hdr->addr1[0], (u32)hdr->addr1[1],
428 		 (u32)hdr->addr1[2], (u32)hdr->addr1[3],
429 		 (u32)hdr->addr1[4], (u32)hdr->addr1[5]);
430 	memcpy(IEEE80211_SKB_RXCB(skb), rx_status, sizeof(*rx_status));
431 	ieee80211_rx(hw, skb);
432 }
433 
434 void  rtl8192cu_rx_hdl(struct ieee80211_hw *hw, struct sk_buff * skb)
435 {
436 	_rtl_rx_process(hw, skb);
437 }
438 
439 void rtl8192c_rx_segregate_hdl(
440 	struct ieee80211_hw *hw,
441 	struct sk_buff *skb,
442 	struct sk_buff_head *skb_list)
443 {
444 }
445 
446 /*----------------------------------------------------------------------
447  *
448  *	Tx handler
449  *
450  *---------------------------------------------------------------------- */
451 void rtl8192c_tx_cleanup(struct ieee80211_hw *hw, struct sk_buff  *skb)
452 {
453 }
454 
455 int rtl8192c_tx_post_hdl(struct ieee80211_hw *hw, struct urb *urb,
456 			 struct sk_buff *skb)
457 {
458 	return 0;
459 }
460 
461 struct sk_buff *rtl8192c_tx_aggregate_hdl(struct ieee80211_hw *hw,
462 					   struct sk_buff_head *list)
463 {
464 	return skb_dequeue(list);
465 }
466 
467 /*======================================== trx ===============================*/
468 
469 static void _rtl_fill_usb_tx_desc(u8 *txdesc)
470 {
471 	SET_TX_DESC_OWN(txdesc, 1);
472 	SET_TX_DESC_LAST_SEG(txdesc, 1);
473 	SET_TX_DESC_FIRST_SEG(txdesc, 1);
474 }
475 /**
476  *	For HW recovery information
477  */
478 static void _rtl_tx_desc_checksum(u8 *txdesc)
479 {
480 	__le16 *ptr = (__le16 *)txdesc;
481 	u16	checksum = 0;
482 	u32 index;
483 
484 	/* Clear first */
485 	SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, 0);
486 	for (index = 0; index < 16; index++)
487 		checksum = checksum ^ le16_to_cpu(*(ptr + index));
488 	SET_TX_DESC_TX_DESC_CHECKSUM(txdesc, checksum);
489 }
490 
491 void rtl92cu_tx_fill_desc(struct ieee80211_hw *hw,
492 			  struct ieee80211_hdr *hdr, u8 *pdesc_tx,
493 			  u8 *pbd_desc_tx, struct ieee80211_tx_info *info,
494 			  struct ieee80211_sta *sta,
495 			  struct sk_buff *skb,
496 			  u8 queue_index,
497 			  struct rtl_tcb_desc *tcb_desc)
498 {
499 	struct rtl_priv *rtlpriv = rtl_priv(hw);
500 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
501 	struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
502 	bool defaultadapter = true;
503 	u8 *qc = ieee80211_get_qos_ctl(hdr);
504 	u8 tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK;
505 	u16 seq_number;
506 	__le16 fc = hdr->frame_control;
507 	u8 rate_flag = info->control.rates[0].flags;
508 	u16 pktlen = skb->len;
509 	enum rtl_desc_qsel fw_qsel = _rtl8192cu_mq_to_descq(hw, fc,
510 						skb_get_queue_mapping(skb));
511 	u8 *txdesc;
512 
513 	seq_number = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
514 	rtl_get_tcb_desc(hw, info, sta, skb, tcb_desc);
515 	txdesc = skb_push(skb, RTL_TX_HEADER_SIZE);
516 	memset(txdesc, 0, RTL_TX_HEADER_SIZE);
517 	SET_TX_DESC_PKT_SIZE(txdesc, pktlen);
518 	SET_TX_DESC_LINIP(txdesc, 0);
519 	SET_TX_DESC_PKT_OFFSET(txdesc, RTL_DUMMY_OFFSET);
520 	SET_TX_DESC_OFFSET(txdesc, RTL_TX_HEADER_SIZE);
521 	SET_TX_DESC_TX_RATE(txdesc, tcb_desc->hw_rate);
522 	if (tcb_desc->use_shortgi || tcb_desc->use_shortpreamble)
523 		SET_TX_DESC_DATA_SHORTGI(txdesc, 1);
524 	if (mac->tids[tid].agg.agg_state == RTL_AGG_ON &&
525 		    info->flags & IEEE80211_TX_CTL_AMPDU) {
526 		SET_TX_DESC_AGG_ENABLE(txdesc, 1);
527 		SET_TX_DESC_MAX_AGG_NUM(txdesc, 0x14);
528 	} else {
529 		SET_TX_DESC_AGG_BREAK(txdesc, 1);
530 	}
531 	SET_TX_DESC_SEQ(txdesc, seq_number);
532 	SET_TX_DESC_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable &&
533 			       !tcb_desc->cts_enable) ? 1 : 0));
534 	SET_TX_DESC_HW_RTS_ENABLE(txdesc, ((tcb_desc->rts_enable ||
535 				  tcb_desc->cts_enable) ? 1 : 0));
536 	SET_TX_DESC_CTS2SELF(txdesc, ((tcb_desc->cts_enable) ? 1 : 0));
537 	SET_TX_DESC_RTS_STBC(txdesc, ((tcb_desc->rts_stbc) ? 1 : 0));
538 	SET_TX_DESC_RTS_RATE(txdesc, tcb_desc->rts_rate);
539 	SET_TX_DESC_RTS_BW(txdesc, 0);
540 	SET_TX_DESC_RTS_SC(txdesc, tcb_desc->rts_sc);
541 	SET_TX_DESC_RTS_SHORT(txdesc,
542 			      ((tcb_desc->rts_rate <= DESC_RATE54M) ?
543 			       (tcb_desc->rts_use_shortpreamble ? 1 : 0)
544 			       : (tcb_desc->rts_use_shortgi ? 1 : 0)));
545 	if (mac->bw_40) {
546 		if (rate_flag & IEEE80211_TX_RC_DUP_DATA) {
547 			SET_TX_DESC_DATA_BW(txdesc, 1);
548 			SET_TX_DESC_DATA_SC(txdesc, 3);
549 		} else if(rate_flag & IEEE80211_TX_RC_40_MHZ_WIDTH){
550 			SET_TX_DESC_DATA_BW(txdesc, 1);
551 			SET_TX_DESC_DATA_SC(txdesc, mac->cur_40_prime_sc);
552 		} else {
553 			SET_TX_DESC_DATA_BW(txdesc, 0);
554 			SET_TX_DESC_DATA_SC(txdesc, 0);
555 		}
556 	} else {
557 		SET_TX_DESC_DATA_BW(txdesc, 0);
558 		SET_TX_DESC_DATA_SC(txdesc, 0);
559 	}
560 	rcu_read_lock();
561 	sta = ieee80211_find_sta(mac->vif, mac->bssid);
562 	if (sta) {
563 		u8 ampdu_density = sta->ht_cap.ampdu_density;
564 		SET_TX_DESC_AMPDU_DENSITY(txdesc, ampdu_density);
565 	}
566 	rcu_read_unlock();
567 	if (info->control.hw_key) {
568 		struct ieee80211_key_conf *keyconf = info->control.hw_key;
569 		switch (keyconf->cipher) {
570 		case WLAN_CIPHER_SUITE_WEP40:
571 		case WLAN_CIPHER_SUITE_WEP104:
572 		case WLAN_CIPHER_SUITE_TKIP:
573 			SET_TX_DESC_SEC_TYPE(txdesc, 0x1);
574 			break;
575 		case WLAN_CIPHER_SUITE_CCMP:
576 			SET_TX_DESC_SEC_TYPE(txdesc, 0x3);
577 			break;
578 		default:
579 			SET_TX_DESC_SEC_TYPE(txdesc, 0x0);
580 			break;
581 		}
582 	}
583 	SET_TX_DESC_PKT_ID(txdesc, 0);
584 	SET_TX_DESC_QUEUE_SEL(txdesc, fw_qsel);
585 	SET_TX_DESC_DATA_RATE_FB_LIMIT(txdesc, 0x1F);
586 	SET_TX_DESC_RTS_RATE_FB_LIMIT(txdesc, 0xF);
587 	SET_TX_DESC_DISABLE_FB(txdesc, 0);
588 	SET_TX_DESC_USE_RATE(txdesc, tcb_desc->use_driver_rate ? 1 : 0);
589 	if (ieee80211_is_data_qos(fc)) {
590 		if (mac->rdg_en) {
591 			RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE,
592 				 "Enable RDG function\n");
593 			SET_TX_DESC_RDG_ENABLE(txdesc, 1);
594 			SET_TX_DESC_HTC(txdesc, 1);
595 		}
596 	}
597 	if (rtlpriv->dm.useramask) {
598 		SET_TX_DESC_RATE_ID(txdesc, tcb_desc->ratr_index);
599 		SET_TX_DESC_MACID(txdesc, tcb_desc->mac_id);
600 	} else {
601 		SET_TX_DESC_RATE_ID(txdesc, 0xC + tcb_desc->ratr_index);
602 		SET_TX_DESC_MACID(txdesc, tcb_desc->ratr_index);
603 	}
604 	if ((!ieee80211_is_data_qos(fc)) && ppsc->leisure_ps &&
605 	      ppsc->fwctrl_lps) {
606 		SET_TX_DESC_HWSEQ_EN(txdesc, 1);
607 		SET_TX_DESC_PKT_ID(txdesc, 8);
608 		if (!defaultadapter)
609 			SET_TX_DESC_QOS(txdesc, 1);
610 	}
611 	if (ieee80211_has_morefrags(fc))
612 		SET_TX_DESC_MORE_FRAG(txdesc, 1);
613 	if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
614 	    is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
615 		SET_TX_DESC_BMC(txdesc, 1);
616 	_rtl_fill_usb_tx_desc(txdesc);
617 	_rtl_tx_desc_checksum(txdesc);
618 	RT_TRACE(rtlpriv, COMP_SEND, DBG_TRACE, "==>\n");
619 }
620 
621 void rtl92cu_fill_fake_txdesc(struct ieee80211_hw *hw, u8 * pDesc,
622 			      u32 buffer_len, bool bIsPsPoll)
623 {
624 	/* Clear all status */
625 	memset(pDesc, 0, RTL_TX_HEADER_SIZE);
626 	SET_TX_DESC_FIRST_SEG(pDesc, 1); /* bFirstSeg; */
627 	SET_TX_DESC_LAST_SEG(pDesc, 1); /* bLastSeg; */
628 	SET_TX_DESC_OFFSET(pDesc, RTL_TX_HEADER_SIZE); /* Offset = 32 */
629 	SET_TX_DESC_PKT_SIZE(pDesc, buffer_len); /* Buffer size + command hdr */
630 	SET_TX_DESC_QUEUE_SEL(pDesc, QSLT_MGNT); /* Fixed queue of Mgnt queue */
631 	/* Set NAVUSEHDR to prevent Ps-poll AId filed to be changed to error
632 	 * vlaue by Hw. */
633 	if (bIsPsPoll) {
634 		SET_TX_DESC_NAV_USE_HDR(pDesc, 1);
635 	} else {
636 		SET_TX_DESC_HWSEQ_EN(pDesc, 1); /* Hw set sequence number */
637 		SET_TX_DESC_PKT_ID(pDesc, 0x100); /* set bit3 to 1. */
638 	}
639 	SET_TX_DESC_USE_RATE(pDesc, 1); /* use data rate which is set by Sw */
640 	SET_TX_DESC_OWN(pDesc, 1);
641 	SET_TX_DESC_TX_RATE(pDesc, DESC_RATE1M);
642 	_rtl_tx_desc_checksum(pDesc);
643 }
644 
645 void rtl92cu_tx_fill_cmddesc(struct ieee80211_hw *hw,
646 			     u8 *pdesc, bool firstseg,
647 			     bool lastseg, struct sk_buff *skb)
648 {
649 	struct rtl_priv *rtlpriv = rtl_priv(hw);
650 	u8 fw_queue = QSLT_BEACON;
651 	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
652 	__le16 fc = hdr->frame_control;
653 
654 	memset((void *)pdesc, 0, RTL_TX_HEADER_SIZE);
655 	if (firstseg)
656 		SET_TX_DESC_OFFSET(pdesc, RTL_TX_HEADER_SIZE);
657 	SET_TX_DESC_TX_RATE(pdesc, DESC_RATE1M);
658 	SET_TX_DESC_SEQ(pdesc, 0);
659 	SET_TX_DESC_LINIP(pdesc, 0);
660 	SET_TX_DESC_QUEUE_SEL(pdesc, fw_queue);
661 	SET_TX_DESC_FIRST_SEG(pdesc, 1);
662 	SET_TX_DESC_LAST_SEG(pdesc, 1);
663 	SET_TX_DESC_RATE_ID(pdesc, 7);
664 	SET_TX_DESC_MACID(pdesc, 0);
665 	SET_TX_DESC_OWN(pdesc, 1);
666 	SET_TX_DESC_PKT_SIZE(pdesc, (u16)skb->len);
667 	SET_TX_DESC_FIRST_SEG(pdesc, 1);
668 	SET_TX_DESC_LAST_SEG(pdesc, 1);
669 	SET_TX_DESC_OFFSET(pdesc, 0x20);
670 	SET_TX_DESC_USE_RATE(pdesc, 1);
671 	if (!ieee80211_is_data_qos(fc)) {
672 		SET_TX_DESC_HWSEQ_EN(pdesc, 1);
673 		SET_TX_DESC_PKT_ID(pdesc, 8);
674 	}
675 	RT_PRINT_DATA(rtlpriv, COMP_CMD, DBG_LOUD, "H2C Tx Cmd Content",
676 		      pdesc, RTL_TX_DESC_SIZE);
677 }
678 
679 bool rtl92cu_cmd_send_packet(struct ieee80211_hw *hw, struct sk_buff *skb)
680 {
681 	return true;
682 }
683