1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
3 *
4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
5 *
6 ******************************************************************************/
7
8 #include <drv_types.h>
9 #include <rtw_debug.h>
10 #include <rtl8723b_hal.h>
11
initrecvbuf(struct recv_buf * precvbuf,struct adapter * padapter)12 static void initrecvbuf(struct recv_buf *precvbuf, struct adapter *padapter)
13 {
14 INIT_LIST_HEAD(&precvbuf->list);
15 spin_lock_init(&precvbuf->recvbuf_lock);
16
17 precvbuf->adapter = padapter;
18 }
19
update_recvframe_attrib(struct adapter * padapter,union recv_frame * precvframe,struct recv_stat * prxstat)20 static void update_recvframe_attrib(struct adapter *padapter,
21 union recv_frame *precvframe,
22 struct recv_stat *prxstat)
23 {
24 struct rx_pkt_attrib *pattrib;
25 struct recv_stat report;
26 struct rxreport_8723b *prxreport = (struct rxreport_8723b *)&report;
27
28 report.rxdw0 = prxstat->rxdw0;
29 report.rxdw1 = prxstat->rxdw1;
30 report.rxdw2 = prxstat->rxdw2;
31 report.rxdw3 = prxstat->rxdw3;
32 report.rxdw4 = prxstat->rxdw4;
33 report.rxdw5 = prxstat->rxdw5;
34
35 pattrib = &precvframe->u.hdr.attrib;
36 memset(pattrib, 0, sizeof(struct rx_pkt_attrib));
37
38 /* update rx report to recv_frame attribute */
39 pattrib->pkt_rpt_type = prxreport->c2h_ind ? C2H_PACKET : NORMAL_RX;
40
41 if (pattrib->pkt_rpt_type == NORMAL_RX) {
42 /* Normal rx packet */
43 /* update rx report to recv_frame attribute */
44 pattrib->pkt_len = (u16)prxreport->pktlen;
45 pattrib->drvinfo_sz = (u8)(prxreport->drvinfosize << 3);
46 pattrib->physt = (u8)prxreport->physt;
47
48 pattrib->crc_err = (u8)prxreport->crc32;
49 pattrib->icv_err = (u8)prxreport->icverr;
50
51 pattrib->bdecrypted = (u8)(prxreport->swdec ? 0 : 1);
52 pattrib->encrypt = (u8)prxreport->security;
53
54 pattrib->qos = (u8)prxreport->qos;
55 pattrib->priority = (u8)prxreport->tid;
56
57 pattrib->amsdu = (u8)prxreport->amsdu;
58
59 pattrib->seq_num = (u16)prxreport->seq;
60 pattrib->frag_num = (u8)prxreport->frag;
61 pattrib->mfrag = (u8)prxreport->mf;
62 pattrib->mdata = (u8)prxreport->md;
63
64 pattrib->data_rate = (u8)prxreport->rx_rate;
65 } else {
66 pattrib->pkt_len = (u16)prxreport->pktlen;
67 }
68 }
69
70 /*
71 * Notice:
72 *Before calling this function,
73 *precvframe->u.hdr.rx_data should be ready!
74 */
update_recvframe_phyinfo(union recv_frame * precvframe,struct phy_stat * pphy_status)75 static void update_recvframe_phyinfo(union recv_frame *precvframe,
76 struct phy_stat *pphy_status)
77 {
78 struct adapter *padapter = precvframe->u.hdr.adapter;
79 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
80 struct hal_com_data *p_hal_data = GET_HAL_DATA(padapter);
81 struct odm_phy_info *p_phy_info =
82 (struct odm_phy_info *)(&pattrib->phy_info);
83
84 u8 *wlanhdr = precvframe->u.hdr.rx_data;
85 u8 *my_bssid;
86 u8 *rx_bssid;
87 u8 *rx_ra;
88 u8 *my_hwaddr;
89 u8 *sa = NULL;
90
91 struct odm_packet_info pkt_info = {
92 .data_rate = 0x00,
93 .station_id = 0x00,
94 .bssid_match = false,
95 .to_self = false,
96 .is_beacon = false,
97 };
98
99 /* unsigned long irqL; */
100 struct sta_priv *pstapriv;
101 struct sta_info *psta;
102
103 my_bssid = get_bssid(&padapter->mlmepriv);
104 rx_bssid = get_hdr_bssid(wlanhdr);
105 pkt_info.bssid_match = ((!IsFrameTypeCtrl(wlanhdr)) &&
106 !pattrib->icv_err && !pattrib->crc_err &&
107 ether_addr_equal(rx_bssid, my_bssid));
108
109 rx_ra = rtl8723bs_get_ra(wlanhdr);
110 my_hwaddr = myid(&padapter->eeprompriv);
111 pkt_info.to_self = pkt_info.bssid_match &&
112 ether_addr_equal(rx_ra, my_hwaddr);
113
114
115 pkt_info.is_beacon = pkt_info.bssid_match &&
116 (GetFrameSubType(wlanhdr) == WIFI_BEACON);
117
118 sa = get_ta(wlanhdr);
119
120 pkt_info.station_id = 0xFF;
121
122 pstapriv = &padapter->stapriv;
123 psta = rtw_get_stainfo(pstapriv, sa);
124 if (psta)
125 pkt_info.station_id = psta->mac_id;
126
127 pkt_info.data_rate = pattrib->data_rate;
128
129 /* rtl8723b_query_rx_phy_status(precvframe, pphy_status); */
130 /* spin_lock_bh(&p_hal_data->odm_stainfo_lock); */
131 odm_phy_status_query(&p_hal_data->odmpriv, p_phy_info,
132 (u8 *)pphy_status, &(pkt_info));
133 if (psta)
134 psta->rssi = pattrib->phy_info.RecvSignalPower;
135 /* spin_unlock_bh(&p_hal_data->odm_stainfo_lock); */
136 precvframe->u.hdr.psta = NULL;
137 if (
138 pkt_info.bssid_match &&
139 (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE) == true)
140 ) {
141 if (psta) {
142 precvframe->u.hdr.psta = psta;
143 rtl8723b_process_phy_info(padapter, precvframe);
144 }
145 } else if (pkt_info.to_self || pkt_info.is_beacon) {
146 u32 adhoc_state = WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE;
147 if (check_fwstate(&padapter->mlmepriv, adhoc_state))
148 if (psta)
149 precvframe->u.hdr.psta = psta;
150 rtl8723b_process_phy_info(padapter, precvframe);
151 }
152 }
153
rtl8723bs_c2h_packet_handler(struct adapter * padapter,u8 * pbuf,u16 length)154 static void rtl8723bs_c2h_packet_handler(struct adapter *padapter,
155 u8 *pbuf, u16 length)
156 {
157 u8 *tmp = NULL;
158 u8 res = false;
159
160 if (length == 0)
161 return;
162
163 tmp = rtw_zmalloc(length);
164 if (!tmp)
165 return;
166
167 memcpy(tmp, pbuf, length);
168
169 res = rtw_c2h_packet_wk_cmd(padapter, tmp, length);
170
171 if (!res)
172 kfree(tmp);
173 }
174
try_alloc_recvframe(struct recv_priv * precvpriv,struct recv_buf * precvbuf)175 static inline union recv_frame *try_alloc_recvframe(struct recv_priv *precvpriv,
176 struct recv_buf *precvbuf)
177 {
178 union recv_frame *precvframe;
179
180 precvframe = rtw_alloc_recvframe(&precvpriv->free_recv_queue);
181 if (!precvframe) {
182 rtw_enqueue_recvbuf_to_head(precvbuf,
183 &precvpriv->recv_buf_pending_queue);
184
185 /* The case of can't allocate recvframe should be temporary, */
186 /* schedule again and hope recvframe is available next time. */
187 tasklet_schedule(&precvpriv->recv_tasklet);
188 }
189
190 return precvframe;
191 }
192
rx_crc_err(struct recv_priv * precvpriv,struct hal_com_data * p_hal_data,struct rx_pkt_attrib * pattrib,union recv_frame * precvframe)193 static inline bool rx_crc_err(struct recv_priv *precvpriv,
194 struct hal_com_data *p_hal_data,
195 struct rx_pkt_attrib *pattrib,
196 union recv_frame *precvframe)
197 {
198 /* fix Hardware RX data error, drop whole recv_buffer */
199 if ((!(p_hal_data->ReceiveConfig & RCR_ACRC32)) && pattrib->crc_err) {
200 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue);
201 return true;
202 }
203
204 return false;
205 }
206
pkt_exceeds_tail(struct recv_priv * precvpriv,u8 * end,u8 * tail,union recv_frame * precvframe)207 static inline bool pkt_exceeds_tail(struct recv_priv *precvpriv,
208 u8 *end, u8 *tail,
209 union recv_frame *precvframe)
210 {
211 if (end > tail) {
212 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue);
213 return true;
214 }
215
216 return false;
217 }
218
rtl8723bs_recv_tasklet(struct tasklet_struct * t)219 static void rtl8723bs_recv_tasklet(struct tasklet_struct *t)
220 {
221 struct adapter *padapter = from_tasklet(padapter, t,
222 recvpriv.recv_tasklet);
223 struct hal_com_data *p_hal_data;
224 struct recv_priv *precvpriv;
225 struct recv_buf *precvbuf;
226 union recv_frame *precvframe;
227 struct rx_pkt_attrib *pattrib;
228 struct __queue *recv_buf_queue;
229 u8 *ptr;
230 u32 pkt_offset, skb_len, alloc_sz;
231 struct sk_buff *pkt_copy = NULL;
232 u8 shift_sz = 0, rx_report_sz = 0;
233
234 p_hal_data = GET_HAL_DATA(padapter);
235 precvpriv = &padapter->recvpriv;
236 recv_buf_queue = &precvpriv->recv_buf_pending_queue;
237
238 do {
239 precvbuf = rtw_dequeue_recvbuf(recv_buf_queue);
240 if (!precvbuf)
241 break;
242
243 ptr = precvbuf->pdata;
244
245 while (ptr < precvbuf->ptail) {
246 precvframe = try_alloc_recvframe(precvpriv, precvbuf);
247 if (!precvframe)
248 return;
249
250 /* rx desc parsing */
251 update_recvframe_attrib(padapter, precvframe,
252 (struct recv_stat *)ptr);
253
254 pattrib = &precvframe->u.hdr.attrib;
255
256 if (rx_crc_err(precvpriv, p_hal_data,
257 pattrib, precvframe))
258 break;
259
260 rx_report_sz = RXDESC_SIZE + pattrib->drvinfo_sz;
261 pkt_offset = rx_report_sz +
262 pattrib->shift_sz +
263 pattrib->pkt_len;
264
265 if (pkt_exceeds_tail(precvpriv, ptr + pkt_offset,
266 precvbuf->ptail, precvframe))
267 break;
268
269 if ((pattrib->crc_err) || (pattrib->icv_err)) {
270 rtw_free_recvframe(precvframe,
271 &precvpriv->free_recv_queue);
272 } else {
273 /* Modified by Albert 20101213 */
274 /* For 8 bytes IP header alignment. */
275 if (pattrib->qos) /* Qos data, wireless lan header length is 26 */
276 shift_sz = 6;
277 else
278 shift_sz = 0;
279
280 skb_len = pattrib->pkt_len;
281
282 /* for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */
283 /* modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */
284 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) {
285 if (skb_len <= 1650)
286 alloc_sz = 1664;
287 else
288 alloc_sz = skb_len + 14;
289 } else {
290 alloc_sz = skb_len;
291 /* 6 is for IP header 8 bytes alignment in QoS packet case. */
292 /* 8 is for skb->data 4 bytes alignment. */
293 alloc_sz += 14;
294 }
295
296 pkt_copy = rtw_skb_alloc(alloc_sz);
297 if (!pkt_copy) {
298 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue);
299 break;
300 }
301
302 pkt_copy->dev = padapter->pnetdev;
303 precvframe->u.hdr.pkt = pkt_copy;
304 skb_reserve(pkt_copy, 8 - ((SIZE_PTR)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */
305 skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */
306 memcpy(pkt_copy->data, (ptr + rx_report_sz + pattrib->shift_sz), skb_len);
307 precvframe->u.hdr.rx_head = pkt_copy->head;
308 precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data;
309 precvframe->u.hdr.rx_end = skb_end_pointer(pkt_copy);
310
311 recvframe_put(precvframe, skb_len);
312 /* recvframe_pull(precvframe, drvinfo_sz + RXDESC_SIZE); */
313
314 if (p_hal_data->ReceiveConfig & RCR_APPFCS)
315 recvframe_pull_tail(precvframe, IEEE80211_FCS_LEN);
316
317 /* move to drv info position */
318 ptr += RXDESC_SIZE;
319
320 /* update drv info */
321 if (p_hal_data->ReceiveConfig & RCR_APP_BA_SSN) {
322 /* rtl8723s_update_bassn(padapter, pdrvinfo); */
323 ptr += 4;
324 }
325
326 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */
327 if (pattrib->physt)
328 update_recvframe_phyinfo(precvframe, (struct phy_stat *)ptr);
329
330 rtw_recv_entry(precvframe);
331 } else if (pattrib->pkt_rpt_type == C2H_PACKET) {
332 struct c2h_evt_hdr_t C2hEvent;
333
334 u16 len_c2h = pattrib->pkt_len;
335 u8 *pbuf_c2h = precvframe->u.hdr.rx_data;
336 u8 *pdata_c2h;
337
338 C2hEvent.CmdID = pbuf_c2h[0];
339 C2hEvent.CmdSeq = pbuf_c2h[1];
340 C2hEvent.CmdLen = (len_c2h-2);
341 pdata_c2h = pbuf_c2h+2;
342
343 if (C2hEvent.CmdID == C2H_CCX_TX_RPT)
344 CCX_FwC2HTxRpt_8723b(padapter, pdata_c2h, C2hEvent.CmdLen);
345 else
346 rtl8723bs_c2h_packet_handler(padapter, precvframe->u.hdr.rx_data, pattrib->pkt_len);
347
348 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue);
349 }
350 }
351
352 pkt_offset = round_up(pkt_offset, 8);
353 precvbuf->pdata += pkt_offset;
354 ptr = precvbuf->pdata;
355 precvframe = NULL;
356 pkt_copy = NULL;
357 }
358
359 rtw_enqueue_recvbuf(precvbuf, &precvpriv->free_recv_buf_queue);
360 } while (1);
361 }
362
363 /*
364 * Initialize recv private variable for hardware dependent
365 * 1. recv buf
366 * 2. recv tasklet
367 *
368 */
rtl8723bs_init_recv_priv(struct adapter * padapter)369 s32 rtl8723bs_init_recv_priv(struct adapter *padapter)
370 {
371 s32 res;
372 u32 i, n;
373 struct recv_priv *precvpriv;
374 struct recv_buf *precvbuf;
375
376 res = _SUCCESS;
377 precvpriv = &padapter->recvpriv;
378
379 /* 3 1. init recv buffer */
380 INIT_LIST_HEAD(&precvpriv->free_recv_buf_queue.queue);
381 spin_lock_init(&precvpriv->free_recv_buf_queue.lock);
382 INIT_LIST_HEAD(&precvpriv->recv_buf_pending_queue.queue);
383 spin_lock_init(&precvpriv->recv_buf_pending_queue.lock);
384
385 n = NR_RECVBUFF * sizeof(struct recv_buf) + 4;
386 precvpriv->pallocated_recv_buf = rtw_zmalloc(n);
387 if (!precvpriv->pallocated_recv_buf) {
388 res = _FAIL;
389 goto exit;
390 }
391
392 precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_recv_buf), 4);
393
394 /* init each recv buffer */
395 precvbuf = (struct recv_buf *)precvpriv->precv_buf;
396 for (i = 0; i < NR_RECVBUFF; i++) {
397 initrecvbuf(precvbuf, padapter);
398
399 if (!precvbuf->pskb) {
400 SIZE_PTR tmpaddr = 0;
401 SIZE_PTR alignment = 0;
402
403 precvbuf->pskb = rtw_skb_alloc(MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ);
404
405 if (precvbuf->pskb) {
406 precvbuf->pskb->dev = padapter->pnetdev;
407
408 tmpaddr = (SIZE_PTR)precvbuf->pskb->data;
409 alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1);
410 skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment));
411 }
412 }
413
414 list_add_tail(&precvbuf->list, &precvpriv->free_recv_buf_queue.queue);
415
416 precvbuf++;
417 }
418 precvpriv->free_recv_buf_queue_cnt = i;
419
420 if (res == _FAIL)
421 goto initbuferror;
422
423 /* 3 2. init tasklet */
424 tasklet_setup(&precvpriv->recv_tasklet, rtl8723bs_recv_tasklet);
425
426 goto exit;
427
428 initbuferror:
429 precvbuf = (struct recv_buf *)precvpriv->precv_buf;
430 if (precvbuf) {
431 n = precvpriv->free_recv_buf_queue_cnt;
432 precvpriv->free_recv_buf_queue_cnt = 0;
433 for (i = 0; i < n ; i++) {
434 list_del_init(&precvbuf->list);
435 rtw_os_recvbuf_resource_free(padapter, precvbuf);
436 precvbuf++;
437 }
438 precvpriv->precv_buf = NULL;
439 }
440
441 kfree(precvpriv->pallocated_recv_buf);
442 precvpriv->pallocated_recv_buf = NULL;
443
444 exit:
445 return res;
446 }
447
448 /*
449 * Free recv private variable of hardware dependent
450 * 1. recv buf
451 * 2. recv tasklet
452 *
453 */
rtl8723bs_free_recv_priv(struct adapter * padapter)454 void rtl8723bs_free_recv_priv(struct adapter *padapter)
455 {
456 u32 i;
457 struct recv_priv *precvpriv;
458 struct recv_buf *precvbuf;
459
460 precvpriv = &padapter->recvpriv;
461
462 /* 3 1. kill tasklet */
463 tasklet_kill(&precvpriv->recv_tasklet);
464
465 /* 3 2. free all recv buffers */
466 precvbuf = (struct recv_buf *)precvpriv->precv_buf;
467 if (precvbuf) {
468 precvpriv->free_recv_buf_queue_cnt = 0;
469 for (i = 0; i < NR_RECVBUFF; i++) {
470 list_del_init(&precvbuf->list);
471 rtw_os_recvbuf_resource_free(padapter, precvbuf);
472 precvbuf++;
473 }
474 precvpriv->precv_buf = NULL;
475 }
476
477 kfree(precvpriv->pallocated_recv_buf);
478 precvpriv->pallocated_recv_buf = NULL;
479 }
480