1 /******************************************************************************
2 *
3 * Copyright(c) 2007 - 2011 Realtek Corporation. All rights reserved.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 *
19 ******************************************************************************/
20 #define _RTL8188E_XMIT_C_
21 #include <osdep_service.h>
22 #include <drv_types.h>
23 #include <mon.h>
24 #include <wifi.h>
25 #include <osdep_intf.h>
26 #include <usb_ops_linux.h>
27 #include <rtl8188e_hal.h>
28
rtl8188eu_init_xmit_priv(struct adapter * adapt)29 s32 rtl8188eu_init_xmit_priv(struct adapter *adapt)
30 {
31 struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
32
33 tasklet_init(&pxmitpriv->xmit_tasklet,
34 (void(*)(unsigned long))rtl8188eu_xmit_tasklet,
35 (unsigned long)adapt);
36 return _SUCCESS;
37 }
38
urb_zero_packet_chk(struct adapter * adapt,int sz)39 static u8 urb_zero_packet_chk(struct adapter *adapt, int sz)
40 {
41 u8 set_tx_desc_offset;
42 struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
43 set_tx_desc_offset = (((sz + TXDESC_SIZE) % haldata->UsbBulkOutSize) == 0) ? 1 : 0;
44
45 return set_tx_desc_offset;
46 }
47
rtl8188eu_cal_txdesc_chksum(struct tx_desc * ptxdesc)48 static void rtl8188eu_cal_txdesc_chksum(struct tx_desc *ptxdesc)
49 {
50 u16 *usptr = (u16 *)ptxdesc;
51 u32 count = 16; /* (32 bytes / 2 bytes per XOR) => 16 times */
52 u32 index;
53 u16 checksum = 0;
54
55 /* Clear first */
56 ptxdesc->txdw7 &= cpu_to_le32(0xffff0000);
57
58 for (index = 0; index < count; index++)
59 checksum = checksum ^ le16_to_cpu(*(__le16 *)(usptr + index));
60 ptxdesc->txdw7 |= cpu_to_le32(0x0000ffff & checksum);
61 }
62
63 /* Description: In normal chip, we should send some packet to Hw which will be used by Fw */
64 /* in FW LPS mode. The function is to fill the Tx descriptor of this packets, then */
65 /* Fw can tell Hw to send these packet derectly. */
rtl8188e_fill_fake_txdesc(struct adapter * adapt,u8 * desc,u32 BufferLen,u8 ispspoll,u8 is_btqosnull)66 void rtl8188e_fill_fake_txdesc(struct adapter *adapt, u8 *desc, u32 BufferLen, u8 ispspoll, u8 is_btqosnull)
67 {
68 struct tx_desc *ptxdesc;
69
70 /* Clear all status */
71 ptxdesc = (struct tx_desc *)desc;
72 memset(desc, 0, TXDESC_SIZE);
73
74 /* offset 0 */
75 ptxdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG); /* own, bFirstSeg, bLastSeg; */
76
77 ptxdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE+OFFSET_SZ)<<OFFSET_SHT)&0x00ff0000); /* 32 bytes for TX Desc */
78
79 ptxdesc->txdw0 |= cpu_to_le32(BufferLen&0x0000ffff); /* Buffer size + command header */
80
81 /* offset 4 */
82 ptxdesc->txdw1 |= cpu_to_le32((QSLT_MGNT<<QSEL_SHT)&0x00001f00); /* Fixed queue of Mgnt queue */
83
84 /* Set NAVUSEHDR to prevent Ps-poll AId filed to be changed to error vlaue by Hw. */
85 if (ispspoll) {
86 ptxdesc->txdw1 |= cpu_to_le32(NAVUSEHDR);
87 } else {
88 ptxdesc->txdw4 |= cpu_to_le32(BIT(7)); /* Hw set sequence number */
89 ptxdesc->txdw3 |= cpu_to_le32((8 << 28)); /* set bit3 to 1. Suugested by TimChen. 2009.12.29. */
90 }
91
92 if (is_btqosnull)
93 ptxdesc->txdw2 |= cpu_to_le32(BIT(23)); /* BT NULL */
94
95 /* offset 16 */
96 ptxdesc->txdw4 |= cpu_to_le32(BIT(8));/* driver uses rate */
97
98 /* USB interface drop packet if the checksum of descriptor isn't correct. */
99 /* Using this checksum can let hardware recovery from packet bulk out error (e.g. Cancel URC, Bulk out error.). */
100 rtl8188eu_cal_txdesc_chksum(ptxdesc);
101 }
102
fill_txdesc_sectype(struct pkt_attrib * pattrib,struct tx_desc * ptxdesc)103 static void fill_txdesc_sectype(struct pkt_attrib *pattrib, struct tx_desc *ptxdesc)
104 {
105 if ((pattrib->encrypt > 0) && !pattrib->bswenc) {
106 switch (pattrib->encrypt) {
107 /* SEC_TYPE : 0:NO_ENC,1:WEP40/TKIP,2:WAPI,3:AES */
108 case _WEP40_:
109 case _WEP104_:
110 ptxdesc->txdw1 |= cpu_to_le32((0x01<<SEC_TYPE_SHT)&0x00c00000);
111 ptxdesc->txdw2 |= cpu_to_le32(0x7 << AMPDU_DENSITY_SHT);
112 break;
113 case _TKIP_:
114 case _TKIP_WTMIC_:
115 ptxdesc->txdw1 |= cpu_to_le32((0x01<<SEC_TYPE_SHT)&0x00c00000);
116 ptxdesc->txdw2 |= cpu_to_le32(0x7 << AMPDU_DENSITY_SHT);
117 break;
118 case _AES_:
119 ptxdesc->txdw1 |= cpu_to_le32((0x03<<SEC_TYPE_SHT)&0x00c00000);
120 ptxdesc->txdw2 |= cpu_to_le32(0x7 << AMPDU_DENSITY_SHT);
121 break;
122 case _NO_PRIVACY_:
123 default:
124 break;
125 }
126 }
127 }
128
fill_txdesc_vcs(struct pkt_attrib * pattrib,__le32 * pdw)129 static void fill_txdesc_vcs(struct pkt_attrib *pattrib, __le32 *pdw)
130 {
131 switch (pattrib->vcs_mode) {
132 case RTS_CTS:
133 *pdw |= cpu_to_le32(RTS_EN);
134 break;
135 case CTS_TO_SELF:
136 *pdw |= cpu_to_le32(CTS_2_SELF);
137 break;
138 case NONE_VCS:
139 default:
140 break;
141 }
142 if (pattrib->vcs_mode) {
143 *pdw |= cpu_to_le32(HW_RTS_EN);
144 /* Set RTS BW */
145 if (pattrib->ht_en) {
146 *pdw |= (pattrib->bwmode&HT_CHANNEL_WIDTH_40) ? cpu_to_le32(BIT(27)) : 0;
147
148 if (pattrib->ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
149 *pdw |= cpu_to_le32((0x01 << 28) & 0x30000000);
150 else if (pattrib->ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
151 *pdw |= cpu_to_le32((0x02 << 28) & 0x30000000);
152 else if (pattrib->ch_offset == HAL_PRIME_CHNL_OFFSET_DONT_CARE)
153 *pdw |= 0;
154 else
155 *pdw |= cpu_to_le32((0x03 << 28) & 0x30000000);
156 }
157 }
158 }
159
fill_txdesc_phy(struct pkt_attrib * pattrib,__le32 * pdw)160 static void fill_txdesc_phy(struct pkt_attrib *pattrib, __le32 *pdw)
161 {
162 if (pattrib->ht_en) {
163 *pdw |= (pattrib->bwmode&HT_CHANNEL_WIDTH_40) ? cpu_to_le32(BIT(25)) : 0;
164
165 if (pattrib->ch_offset == HAL_PRIME_CHNL_OFFSET_LOWER)
166 *pdw |= cpu_to_le32((0x01 << DATA_SC_SHT) & 0x003f0000);
167 else if (pattrib->ch_offset == HAL_PRIME_CHNL_OFFSET_UPPER)
168 *pdw |= cpu_to_le32((0x02 << DATA_SC_SHT) & 0x003f0000);
169 else if (pattrib->ch_offset == HAL_PRIME_CHNL_OFFSET_DONT_CARE)
170 *pdw |= 0;
171 else
172 *pdw |= cpu_to_le32((0x03 << DATA_SC_SHT) & 0x003f0000);
173 }
174 }
175
update_txdesc(struct xmit_frame * pxmitframe,u8 * pmem,s32 sz,u8 bagg_pkt)176 static s32 update_txdesc(struct xmit_frame *pxmitframe, u8 *pmem, s32 sz, u8 bagg_pkt)
177 {
178 int pull = 0;
179 uint qsel;
180 u8 data_rate, pwr_status, offset;
181 struct adapter *adapt = pxmitframe->padapter;
182 struct pkt_attrib *pattrib = &pxmitframe->attrib;
183 struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
184 struct tx_desc *ptxdesc = (struct tx_desc *)pmem;
185 struct mlme_ext_priv *pmlmeext = &adapt->mlmeextpriv;
186 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
187 int bmcst = IS_MCAST(pattrib->ra);
188
189 if (adapt->registrypriv.mp_mode == 0) {
190 if ((!bagg_pkt) && (urb_zero_packet_chk(adapt, sz) == 0)) {
191 ptxdesc = (struct tx_desc *)(pmem+PACKET_OFFSET_SZ);
192 pull = 1;
193 }
194 }
195
196 memset(ptxdesc, 0, sizeof(struct tx_desc));
197
198 /* 4 offset 0 */
199 ptxdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
200 ptxdesc->txdw0 |= cpu_to_le32(sz & 0x0000ffff);/* update TXPKTSIZE */
201
202 offset = TXDESC_SIZE + OFFSET_SZ;
203
204 ptxdesc->txdw0 |= cpu_to_le32(((offset) << OFFSET_SHT) & 0x00ff0000);/* 32 bytes for TX Desc */
205
206 if (bmcst)
207 ptxdesc->txdw0 |= cpu_to_le32(BMC);
208
209 if (adapt->registrypriv.mp_mode == 0) {
210 if (!bagg_pkt) {
211 if ((pull) && (pxmitframe->pkt_offset > 0))
212 pxmitframe->pkt_offset = pxmitframe->pkt_offset - 1;
213 }
214 }
215
216 /* pkt_offset, unit:8 bytes padding */
217 if (pxmitframe->pkt_offset > 0)
218 ptxdesc->txdw1 |= cpu_to_le32((pxmitframe->pkt_offset << 26) & 0x7c000000);
219
220 /* driver uses rate */
221 ptxdesc->txdw4 |= cpu_to_le32(USERATE);/* rate control always by driver */
222
223 if ((pxmitframe->frame_tag & 0x0f) == DATA_FRAMETAG) {
224 /* offset 4 */
225 ptxdesc->txdw1 |= cpu_to_le32(pattrib->mac_id & 0x3F);
226
227 qsel = (uint)(pattrib->qsel & 0x0000001f);
228 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
229
230 ptxdesc->txdw1 |= cpu_to_le32((pattrib->raid << RATE_ID_SHT) & 0x000F0000);
231
232 fill_txdesc_sectype(pattrib, ptxdesc);
233
234 if (pattrib->ampdu_en) {
235 ptxdesc->txdw2 |= cpu_to_le32(AGG_EN);/* AGG EN */
236 ptxdesc->txdw6 = cpu_to_le32(0x6666f800);
237 } else {
238 ptxdesc->txdw2 |= cpu_to_le32(AGG_BK);/* AGG BK */
239 }
240
241 /* offset 8 */
242
243 /* offset 12 */
244 ptxdesc->txdw3 |= cpu_to_le32((pattrib->seqnum << SEQ_SHT) & 0x0FFF0000);
245
246 /* offset 16 , offset 20 */
247 if (pattrib->qos_en)
248 ptxdesc->txdw4 |= cpu_to_le32(QOS);/* QoS */
249
250 /* offset 20 */
251 if (pxmitframe->agg_num > 1)
252 ptxdesc->txdw5 |= cpu_to_le32((pxmitframe->agg_num << USB_TXAGG_NUM_SHT) & 0xFF000000);
253
254 if ((pattrib->ether_type != 0x888e) &&
255 (pattrib->ether_type != 0x0806) &&
256 (pattrib->ether_type != 0x88b4) &&
257 (pattrib->dhcp_pkt != 1)) {
258 /* Non EAP & ARP & DHCP type data packet */
259
260 fill_txdesc_vcs(pattrib, &ptxdesc->txdw4);
261 fill_txdesc_phy(pattrib, &ptxdesc->txdw4);
262
263 ptxdesc->txdw4 |= cpu_to_le32(0x00000008);/* RTS Rate=24M */
264 ptxdesc->txdw5 |= cpu_to_le32(0x0001ff00);/* DATA/RTS Rate FB LMT */
265
266 if (pattrib->ht_en) {
267 if (ODM_RA_GetShortGI_8188E(&haldata->odmpriv, pattrib->mac_id))
268 ptxdesc->txdw5 |= cpu_to_le32(SGI);/* SGI */
269 }
270 data_rate = ODM_RA_GetDecisionRate_8188E(&haldata->odmpriv, pattrib->mac_id);
271 ptxdesc->txdw5 |= cpu_to_le32(data_rate & 0x3F);
272 pwr_status = ODM_RA_GetHwPwrStatus_8188E(&haldata->odmpriv, pattrib->mac_id);
273 ptxdesc->txdw4 |= cpu_to_le32((pwr_status & 0x7) << PWR_STATUS_SHT);
274 } else {
275 /* EAP data packet and ARP packet and DHCP. */
276 /* Use the 1M data rate to send the EAP/ARP packet. */
277 /* This will maybe make the handshake smooth. */
278 ptxdesc->txdw2 |= cpu_to_le32(AGG_BK);/* AGG BK */
279 if (pmlmeinfo->preamble_mode == PREAMBLE_SHORT)
280 ptxdesc->txdw4 |= cpu_to_le32(BIT(24));/* DATA_SHORT */
281 ptxdesc->txdw5 |= cpu_to_le32(MRateToHwRate(pmlmeext->tx_rate));
282 }
283 } else if ((pxmitframe->frame_tag&0x0f) == MGNT_FRAMETAG) {
284 /* offset 4 */
285 ptxdesc->txdw1 |= cpu_to_le32(pattrib->mac_id & 0x3f);
286
287 qsel = (uint)(pattrib->qsel&0x0000001f);
288 ptxdesc->txdw1 |= cpu_to_le32((qsel << QSEL_SHT) & 0x00001f00);
289
290 ptxdesc->txdw1 |= cpu_to_le32((pattrib->raid << RATE_ID_SHT) & 0x000f0000);
291
292 /* offset 8 */
293 /* CCX-TXRPT ack for xmit mgmt frames. */
294 if (pxmitframe->ack_report)
295 ptxdesc->txdw2 |= cpu_to_le32(BIT(19));
296
297 /* offset 12 */
298 ptxdesc->txdw3 |= cpu_to_le32((pattrib->seqnum<<SEQ_SHT)&0x0FFF0000);
299
300 /* offset 20 */
301 ptxdesc->txdw5 |= cpu_to_le32(RTY_LMT_EN);/* retry limit enable */
302 if (pattrib->retry_ctrl)
303 ptxdesc->txdw5 |= cpu_to_le32(0x00180000);/* retry limit = 6 */
304 else
305 ptxdesc->txdw5 |= cpu_to_le32(0x00300000);/* retry limit = 12 */
306
307 ptxdesc->txdw5 |= cpu_to_le32(MRateToHwRate(pmlmeext->tx_rate));
308 } else if ((pxmitframe->frame_tag&0x0f) == TXAGG_FRAMETAG) {
309 DBG_88E("pxmitframe->frame_tag == TXAGG_FRAMETAG\n");
310 } else {
311 DBG_88E("pxmitframe->frame_tag = %d\n", pxmitframe->frame_tag);
312
313 /* offset 4 */
314 ptxdesc->txdw1 |= cpu_to_le32((4) & 0x3f);/* CAM_ID(MAC_ID) */
315
316 ptxdesc->txdw1 |= cpu_to_le32((6 << RATE_ID_SHT) & 0x000f0000);/* raid */
317
318 /* offset 8 */
319
320 /* offset 12 */
321 ptxdesc->txdw3 |= cpu_to_le32((pattrib->seqnum<<SEQ_SHT)&0x0fff0000);
322
323 /* offset 20 */
324 ptxdesc->txdw5 |= cpu_to_le32(MRateToHwRate(pmlmeext->tx_rate));
325 }
326
327 /* 2009.11.05. tynli_test. Suggested by SD4 Filen for FW LPS. */
328 /* (1) The sequence number of each non-Qos frame / broadcast / multicast / */
329 /* mgnt frame should be controlled by Hw because Fw will also send null data */
330 /* which we cannot control when Fw LPS enable. */
331 /* --> default enable non-Qos data sequense number. 2010.06.23. by tynli. */
332 /* (2) Enable HW SEQ control for beacon packet, because we use Hw beacon. */
333 /* (3) Use HW Qos SEQ to control the seq num of Ext port non-Qos packets. */
334 /* 2010.06.23. Added by tynli. */
335 if (!pattrib->qos_en) {
336 ptxdesc->txdw3 |= cpu_to_le32(EN_HWSEQ); /* Hw set sequence number */
337 ptxdesc->txdw4 |= cpu_to_le32(HW_SSN); /* Hw set sequence number */
338 }
339
340 rtl88eu_dm_set_tx_ant_by_tx_info(&haldata->odmpriv, pmem,
341 pattrib->mac_id);
342
343 rtl8188eu_cal_txdesc_chksum(ptxdesc);
344 _dbg_dump_tx_info(adapt, pxmitframe->frame_tag, ptxdesc);
345 return pull;
346 }
347
348 /* for non-agg data frame or management frame */
rtw_dump_xframe(struct adapter * adapt,struct xmit_frame * pxmitframe)349 static s32 rtw_dump_xframe(struct adapter *adapt, struct xmit_frame *pxmitframe)
350 {
351 s32 ret = _SUCCESS;
352 s32 inner_ret = _SUCCESS;
353 int t, sz, w_sz, pull = 0;
354 u8 *mem_addr;
355 u32 ff_hwaddr;
356 struct xmit_buf *pxmitbuf = pxmitframe->pxmitbuf;
357 struct pkt_attrib *pattrib = &pxmitframe->attrib;
358 struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
359 struct security_priv *psecuritypriv = &adapt->securitypriv;
360 if ((pxmitframe->frame_tag == DATA_FRAMETAG) &&
361 (pxmitframe->attrib.ether_type != 0x0806) &&
362 (pxmitframe->attrib.ether_type != 0x888e) &&
363 (pxmitframe->attrib.ether_type != 0x88b4) &&
364 (pxmitframe->attrib.dhcp_pkt != 1))
365 rtw_issue_addbareq_cmd(adapt, pxmitframe);
366 mem_addr = pxmitframe->buf_addr;
367
368 RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, ("rtw_dump_xframe()\n"));
369
370 for (t = 0; t < pattrib->nr_frags; t++) {
371 if (inner_ret != _SUCCESS && ret == _SUCCESS)
372 ret = _FAIL;
373
374 if (t != (pattrib->nr_frags - 1)) {
375 RT_TRACE(_module_rtl871x_xmit_c_, _drv_err_, ("pattrib->nr_frags=%d\n", pattrib->nr_frags));
376
377 sz = pxmitpriv->frag_len;
378 sz = sz - 4 - (psecuritypriv->sw_encrypt ? 0 : pattrib->icv_len);
379 } else {
380 /* no frag */
381 sz = pattrib->last_txcmdsz;
382 }
383
384 pull = update_txdesc(pxmitframe, mem_addr, sz, false);
385
386 if (pull) {
387 mem_addr += PACKET_OFFSET_SZ; /* pull txdesc head */
388 pxmitframe->buf_addr = mem_addr;
389 w_sz = sz + TXDESC_SIZE;
390 } else {
391 w_sz = sz + TXDESC_SIZE + PACKET_OFFSET_SZ;
392 }
393 ff_hwaddr = rtw_get_ff_hwaddr(pxmitframe);
394
395 inner_ret = usb_write_port(adapt, ff_hwaddr, w_sz, (unsigned char *)pxmitbuf);
396
397 rtw_count_tx_stats(adapt, pxmitframe, sz);
398
399 RT_TRACE(_module_rtl871x_xmit_c_, _drv_info_, ("rtw_write_port, w_sz=%d\n", w_sz));
400
401 mem_addr += w_sz;
402
403 mem_addr = (u8 *)round_up((size_t)mem_addr, 4);
404 }
405
406 rtw_free_xmitframe(pxmitpriv, pxmitframe);
407
408 if (ret != _SUCCESS)
409 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_UNKNOWN);
410
411 return ret;
412 }
413
xmitframe_need_length(struct xmit_frame * pxmitframe)414 static u32 xmitframe_need_length(struct xmit_frame *pxmitframe)
415 {
416 struct pkt_attrib *pattrib = &pxmitframe->attrib;
417
418 u32 len = 0;
419
420 /* no consider fragement */
421 len = pattrib->hdrlen + pattrib->iv_len +
422 SNAP_SIZE + sizeof(u16) +
423 pattrib->pktlen +
424 ((pattrib->bswenc) ? pattrib->icv_len : 0);
425
426 if (pattrib->encrypt == _TKIP_)
427 len += 8;
428
429 return len;
430 }
431
rtl8188eu_xmitframe_complete(struct adapter * adapt,struct xmit_priv * pxmitpriv,struct xmit_buf * pxmitbuf)432 s32 rtl8188eu_xmitframe_complete(struct adapter *adapt, struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
433 {
434 struct hal_data_8188e *haldata = GET_HAL_DATA(adapt);
435 struct xmit_frame *pxmitframe = NULL;
436 struct xmit_frame *pfirstframe = NULL;
437
438 /* aggregate variable */
439 struct hw_xmit *phwxmit;
440 struct sta_info *psta = NULL;
441 struct tx_servq *ptxservq = NULL;
442
443 struct list_head *xmitframe_plist = NULL, *xmitframe_phead = NULL;
444
445 u32 pbuf; /* next pkt address */
446 u32 pbuf_tail; /* last pkt tail */
447 u32 len; /* packet length, except TXDESC_SIZE and PKT_OFFSET */
448
449 u32 bulksize = haldata->UsbBulkOutSize;
450 u8 desc_cnt;
451 u32 bulkptr;
452
453 /* dump frame variable */
454 u32 ff_hwaddr;
455
456 RT_TRACE(_module_rtl8192c_xmit_c_, _drv_info_, ("+xmitframe_complete\n"));
457
458 /* check xmitbuffer is ok */
459 if (pxmitbuf == NULL) {
460 pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
461 if (pxmitbuf == NULL)
462 return false;
463 }
464
465 /* 3 1. pick up first frame */
466 do {
467 rtw_free_xmitframe(pxmitpriv, pxmitframe);
468
469 pxmitframe = rtw_dequeue_xframe(pxmitpriv, pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
470 if (pxmitframe == NULL) {
471 /* no more xmit frame, release xmit buffer */
472 rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
473 return false;
474 }
475
476 pxmitframe->pxmitbuf = pxmitbuf;
477 pxmitframe->buf_addr = pxmitbuf->pbuf;
478 pxmitbuf->priv_data = pxmitframe;
479
480 pxmitframe->agg_num = 1; /* alloc xmitframe should assign to 1. */
481 pxmitframe->pkt_offset = 1; /* first frame of aggregation, reserve offset */
482
483 rtw_xmitframe_coalesce(adapt, pxmitframe->pkt, pxmitframe);
484
485 /* always return ndis_packet after rtw_xmitframe_coalesce */
486 rtw_os_xmit_complete(adapt, pxmitframe);
487
488 break;
489 } while (1);
490
491 /* 3 2. aggregate same priority and same DA(AP or STA) frames */
492 pfirstframe = pxmitframe;
493 len = xmitframe_need_length(pfirstframe) + TXDESC_SIZE + (pfirstframe->pkt_offset*PACKET_OFFSET_SZ);
494 pbuf_tail = len;
495 pbuf = round_up(pbuf_tail, 8);
496
497 /* check pkt amount in one bulk */
498 desc_cnt = 0;
499 bulkptr = bulksize;
500 if (pbuf < bulkptr) {
501 desc_cnt++;
502 } else {
503 desc_cnt = 0;
504 bulkptr = ((pbuf / bulksize) + 1) * bulksize; /* round to next bulksize */
505 }
506
507 /* dequeue same priority packet from station tx queue */
508 psta = pfirstframe->attrib.psta;
509 switch (pfirstframe->attrib.priority) {
510 case 1:
511 case 2:
512 ptxservq = &(psta->sta_xmitpriv.bk_q);
513 phwxmit = pxmitpriv->hwxmits + 3;
514 break;
515 case 4:
516 case 5:
517 ptxservq = &(psta->sta_xmitpriv.vi_q);
518 phwxmit = pxmitpriv->hwxmits + 1;
519 break;
520 case 6:
521 case 7:
522 ptxservq = &(psta->sta_xmitpriv.vo_q);
523 phwxmit = pxmitpriv->hwxmits;
524 break;
525 case 0:
526 case 3:
527 default:
528 ptxservq = &(psta->sta_xmitpriv.be_q);
529 phwxmit = pxmitpriv->hwxmits + 2;
530 break;
531 }
532 spin_lock_bh(&pxmitpriv->lock);
533
534 xmitframe_phead = get_list_head(&ptxservq->sta_pending);
535 xmitframe_plist = xmitframe_phead->next;
536
537 while (xmitframe_phead != xmitframe_plist) {
538 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
539 xmitframe_plist = xmitframe_plist->next;
540
541 pxmitframe->agg_num = 0; /* not first frame of aggregation */
542 pxmitframe->pkt_offset = 0; /* not first frame of aggregation, no need to reserve offset */
543
544 len = xmitframe_need_length(pxmitframe) + TXDESC_SIZE + (pxmitframe->pkt_offset*PACKET_OFFSET_SZ);
545
546 if (round_up(pbuf + len, 8) > MAX_XMITBUF_SZ) {
547 pxmitframe->agg_num = 1;
548 pxmitframe->pkt_offset = 1;
549 break;
550 }
551 list_del_init(&pxmitframe->list);
552 ptxservq->qcnt--;
553 phwxmit->accnt--;
554
555 pxmitframe->buf_addr = pxmitbuf->pbuf + pbuf;
556
557 rtw_xmitframe_coalesce(adapt, pxmitframe->pkt, pxmitframe);
558 /* always return ndis_packet after rtw_xmitframe_coalesce */
559 rtw_os_xmit_complete(adapt, pxmitframe);
560
561 /* (len - TXDESC_SIZE) == pxmitframe->attrib.last_txcmdsz */
562 update_txdesc(pxmitframe, pxmitframe->buf_addr, pxmitframe->attrib.last_txcmdsz, true);
563
564 /* don't need xmitframe any more */
565 rtw_free_xmitframe(pxmitpriv, pxmitframe);
566
567 /* handle pointer and stop condition */
568 pbuf_tail = pbuf + len;
569 pbuf = round_up(pbuf_tail, 8);
570
571 pfirstframe->agg_num++;
572 if (MAX_TX_AGG_PACKET_NUMBER == pfirstframe->agg_num)
573 break;
574
575 if (pbuf < bulkptr) {
576 desc_cnt++;
577 if (desc_cnt == haldata->UsbTxAggDescNum)
578 break;
579 } else {
580 desc_cnt = 0;
581 bulkptr = ((pbuf / bulksize) + 1) * bulksize;
582 }
583 } /* end while (aggregate same priority and same DA(AP or STA) frames) */
584
585 if (list_empty(&ptxservq->sta_pending.queue))
586 list_del_init(&ptxservq->tx_pending);
587
588 spin_unlock_bh(&pxmitpriv->lock);
589 if ((pfirstframe->attrib.ether_type != 0x0806) &&
590 (pfirstframe->attrib.ether_type != 0x888e) &&
591 (pfirstframe->attrib.ether_type != 0x88b4) &&
592 (pfirstframe->attrib.dhcp_pkt != 1))
593 rtw_issue_addbareq_cmd(adapt, pfirstframe);
594 /* 3 3. update first frame txdesc */
595 if ((pbuf_tail % bulksize) == 0) {
596 /* remove pkt_offset */
597 pbuf_tail -= PACKET_OFFSET_SZ;
598 pfirstframe->buf_addr += PACKET_OFFSET_SZ;
599 pfirstframe->pkt_offset--;
600 }
601
602 update_txdesc(pfirstframe, pfirstframe->buf_addr, pfirstframe->attrib.last_txcmdsz, true);
603
604 /* 3 4. write xmit buffer to USB FIFO */
605 ff_hwaddr = rtw_get_ff_hwaddr(pfirstframe);
606 usb_write_port(adapt, ff_hwaddr, pbuf_tail, (u8 *)pxmitbuf);
607
608 /* 3 5. update statisitc */
609 pbuf_tail -= (pfirstframe->agg_num * TXDESC_SIZE);
610 pbuf_tail -= (pfirstframe->pkt_offset * PACKET_OFFSET_SZ);
611
612 rtw_count_tx_stats(adapt, pfirstframe, pbuf_tail);
613
614 rtw_free_xmitframe(pxmitpriv, pfirstframe);
615
616 return true;
617 }
618
xmitframe_direct(struct adapter * adapt,struct xmit_frame * pxmitframe)619 static s32 xmitframe_direct(struct adapter *adapt, struct xmit_frame *pxmitframe)
620 {
621 s32 res = _SUCCESS;
622
623 res = rtw_xmitframe_coalesce(adapt, pxmitframe->pkt, pxmitframe);
624 if (res == _SUCCESS)
625 rtw_dump_xframe(adapt, pxmitframe);
626 else
627 DBG_88E("==> %s xmitframe_coalsece failed\n", __func__);
628 return res;
629 }
630
631 /*
632 * Return
633 * true dump packet directly
634 * false enqueue packet
635 */
pre_xmitframe(struct adapter * adapt,struct xmit_frame * pxmitframe)636 static s32 pre_xmitframe(struct adapter *adapt, struct xmit_frame *pxmitframe)
637 {
638 s32 res;
639 struct xmit_buf *pxmitbuf = NULL;
640 struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
641 struct pkt_attrib *pattrib = &pxmitframe->attrib;
642 struct mlme_priv *pmlmepriv = &adapt->mlmepriv;
643
644 spin_lock_bh(&pxmitpriv->lock);
645
646 if (rtw_txframes_sta_ac_pending(adapt, pattrib) > 0)
647 goto enqueue;
648
649 if (check_fwstate(pmlmepriv, _FW_UNDER_SURVEY|_FW_UNDER_LINKING) == true)
650 goto enqueue;
651
652 pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
653 if (!pxmitbuf)
654 goto enqueue;
655
656 spin_unlock_bh(&pxmitpriv->lock);
657
658 pxmitframe->pxmitbuf = pxmitbuf;
659 pxmitframe->buf_addr = pxmitbuf->pbuf;
660 pxmitbuf->priv_data = pxmitframe;
661
662 if (xmitframe_direct(adapt, pxmitframe) != _SUCCESS) {
663 rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
664 rtw_free_xmitframe(pxmitpriv, pxmitframe);
665 }
666
667 return true;
668
669 enqueue:
670 res = rtw_xmitframe_enqueue(adapt, pxmitframe);
671 spin_unlock_bh(&pxmitpriv->lock);
672
673 if (res != _SUCCESS) {
674 RT_TRACE(_module_xmit_osdep_c_, _drv_err_, ("pre_xmitframe: enqueue xmitframe fail\n"));
675 rtw_free_xmitframe(pxmitpriv, pxmitframe);
676
677 /* Trick, make the statistics correct */
678 pxmitpriv->tx_pkts--;
679 pxmitpriv->tx_drop++;
680 return true;
681 }
682
683 return false;
684 }
685
rtl8188eu_mgnt_xmit(struct adapter * adapt,struct xmit_frame * pmgntframe)686 s32 rtl8188eu_mgnt_xmit(struct adapter *adapt, struct xmit_frame *pmgntframe)
687 {
688 struct xmit_priv *xmitpriv = &adapt->xmitpriv;
689
690 rtl88eu_mon_xmit_hook(adapt->pmondev, pmgntframe, xmitpriv->frag_len);
691 return rtw_dump_xframe(adapt, pmgntframe);
692 }
693
694 /*
695 * Return
696 * true dump packet directly ok
697 * false temporary can't transmit packets to hardware
698 */
rtl8188eu_hal_xmit(struct adapter * adapt,struct xmit_frame * pxmitframe)699 s32 rtl8188eu_hal_xmit(struct adapter *adapt, struct xmit_frame *pxmitframe)
700 {
701 return pre_xmitframe(adapt, pxmitframe);
702 }
703