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 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 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 */ 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; 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 wlanhdr = get_recvframe_data(precvframe); 104 my_bssid = get_bssid(&padapter->mlmepriv); 105 rx_bssid = get_hdr_bssid(wlanhdr); 106 pkt_info.bssid_match = ((!IsFrameTypeCtrl(wlanhdr)) && 107 !pattrib->icv_err && !pattrib->crc_err && 108 ether_addr_equal(rx_bssid, my_bssid)); 109 110 rx_ra = rtl8723bs_get_ra(wlanhdr); 111 my_hwaddr = myid(&padapter->eeprompriv); 112 pkt_info.to_self = pkt_info.bssid_match && 113 ether_addr_equal(rx_ra, my_hwaddr); 114 115 116 pkt_info.is_beacon = pkt_info.bssid_match && 117 (GetFrameSubType(wlanhdr) == WIFI_BEACON); 118 119 sa = get_ta(wlanhdr); 120 121 pkt_info.station_id = 0xFF; 122 123 pstapriv = &padapter->stapriv; 124 psta = rtw_get_stainfo(pstapriv, sa); 125 if (psta) 126 pkt_info.station_id = psta->mac_id; 127 128 pkt_info.data_rate = pattrib->data_rate; 129 130 /* rtl8723b_query_rx_phy_status(precvframe, pphy_status); */ 131 /* spin_lock_bh(&p_hal_data->odm_stainfo_lock); */ 132 odm_phy_status_query(&p_hal_data->odmpriv, p_phy_info, 133 (u8 *)pphy_status, &(pkt_info)); 134 if (psta) 135 psta->rssi = pattrib->phy_info.RecvSignalPower; 136 /* spin_unlock_bh(&p_hal_data->odm_stainfo_lock); */ 137 precvframe->u.hdr.psta = NULL; 138 if ( 139 pkt_info.bssid_match && 140 (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE) == true) 141 ) { 142 if (psta) { 143 precvframe->u.hdr.psta = psta; 144 rtl8723b_process_phy_info(padapter, precvframe); 145 } 146 } else if (pkt_info.to_self || pkt_info.is_beacon) { 147 u32 adhoc_state = WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE; 148 if (check_fwstate(&padapter->mlmepriv, adhoc_state)) 149 if (psta) 150 precvframe->u.hdr.psta = psta; 151 rtl8723b_process_phy_info(padapter, precvframe); 152 } 153 } 154 155 static void rtl8723bs_c2h_packet_handler(struct adapter *padapter, 156 u8 *pbuf, u16 length) 157 { 158 u8 *tmp = NULL; 159 u8 res = false; 160 161 if (length == 0) 162 return; 163 164 tmp = rtw_zmalloc(length); 165 if (!tmp) 166 return; 167 168 memcpy(tmp, pbuf, length); 169 170 res = rtw_c2h_packet_wk_cmd(padapter, tmp, length); 171 172 if (!res) 173 kfree(tmp); 174 } 175 176 static inline union recv_frame *try_alloc_recvframe(struct recv_priv *precvpriv, 177 struct recv_buf *precvbuf) 178 { 179 union recv_frame *precvframe; 180 181 precvframe = rtw_alloc_recvframe(&precvpriv->free_recv_queue); 182 if (!precvframe) { 183 rtw_enqueue_recvbuf_to_head(precvbuf, 184 &precvpriv->recv_buf_pending_queue); 185 186 /* The case of can't allocate recvframe should be temporary, */ 187 /* schedule again and hope recvframe is available next time. */ 188 tasklet_schedule(&precvpriv->recv_tasklet); 189 } 190 191 return precvframe; 192 } 193 194 static inline bool rx_crc_err(struct recv_priv *precvpriv, 195 struct hal_com_data *p_hal_data, 196 struct rx_pkt_attrib *pattrib, 197 union recv_frame *precvframe) 198 { 199 /* fix Hardware RX data error, drop whole recv_buffer */ 200 if ((!(p_hal_data->ReceiveConfig & RCR_ACRC32)) && pattrib->crc_err) { 201 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 202 return true; 203 } 204 205 return false; 206 } 207 208 static inline bool pkt_exceeds_tail(struct recv_priv *precvpriv, 209 u8 *end, u8 *tail, 210 union recv_frame *precvframe) 211 { 212 if (end > tail) { 213 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 214 return true; 215 } 216 217 return false; 218 } 219 220 static void rtl8723bs_recv_tasklet(struct tasklet_struct *t) 221 { 222 struct adapter *padapter = from_tasklet(padapter, t, 223 recvpriv.recv_tasklet); 224 struct hal_com_data *p_hal_data; 225 struct recv_priv *precvpriv; 226 struct recv_buf *precvbuf; 227 union recv_frame *precvframe; 228 struct rx_pkt_attrib *pattrib; 229 struct __queue *recv_buf_queue; 230 u8 *ptr; 231 u32 pkt_offset, skb_len, alloc_sz; 232 struct sk_buff *pkt_copy = NULL; 233 u8 shift_sz = 0, rx_report_sz = 0; 234 235 p_hal_data = GET_HAL_DATA(padapter); 236 precvpriv = &padapter->recvpriv; 237 recv_buf_queue = &precvpriv->recv_buf_pending_queue; 238 239 do { 240 precvbuf = rtw_dequeue_recvbuf(recv_buf_queue); 241 if (!precvbuf) 242 break; 243 244 ptr = precvbuf->pdata; 245 246 while (ptr < precvbuf->ptail) { 247 precvframe = try_alloc_recvframe(precvpriv, precvbuf); 248 if (!precvframe) 249 return; 250 251 /* rx desc parsing */ 252 update_recvframe_attrib(padapter, precvframe, 253 (struct recv_stat *)ptr); 254 255 pattrib = &precvframe->u.hdr.attrib; 256 257 if (rx_crc_err(precvpriv, p_hal_data, 258 pattrib, precvframe)) 259 break; 260 261 rx_report_sz = RXDESC_SIZE + pattrib->drvinfo_sz; 262 pkt_offset = rx_report_sz + 263 pattrib->shift_sz + 264 pattrib->pkt_len; 265 266 if (pkt_exceeds_tail(precvpriv, ptr + pkt_offset, 267 precvbuf->ptail, precvframe)) 268 break; 269 270 if ((pattrib->crc_err) || (pattrib->icv_err)) { 271 rtw_free_recvframe(precvframe, 272 &precvpriv->free_recv_queue); 273 } else { 274 /* Modified by Albert 20101213 */ 275 /* For 8 bytes IP header alignment. */ 276 if (pattrib->qos) /* Qos data, wireless lan header length is 26 */ 277 shift_sz = 6; 278 else 279 shift_sz = 0; 280 281 skb_len = pattrib->pkt_len; 282 283 /* for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */ 284 /* modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */ 285 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) { 286 if (skb_len <= 1650) 287 alloc_sz = 1664; 288 else 289 alloc_sz = skb_len + 14; 290 } else { 291 alloc_sz = skb_len; 292 /* 6 is for IP header 8 bytes alignment in QoS packet case. */ 293 /* 8 is for skb->data 4 bytes alignment. */ 294 alloc_sz += 14; 295 } 296 297 pkt_copy = rtw_skb_alloc(alloc_sz); 298 if (!pkt_copy) { 299 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 300 break; 301 } 302 303 pkt_copy->dev = padapter->pnetdev; 304 precvframe->u.hdr.pkt = pkt_copy; 305 skb_reserve(pkt_copy, 8 - ((SIZE_PTR)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */ 306 skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */ 307 memcpy(pkt_copy->data, (ptr + rx_report_sz + pattrib->shift_sz), skb_len); 308 precvframe->u.hdr.rx_head = pkt_copy->head; 309 precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data; 310 precvframe->u.hdr.rx_end = skb_end_pointer(pkt_copy); 311 312 recvframe_put(precvframe, skb_len); 313 /* recvframe_pull(precvframe, drvinfo_sz + RXDESC_SIZE); */ 314 315 if (p_hal_data->ReceiveConfig & RCR_APPFCS) 316 recvframe_pull_tail(precvframe, IEEE80211_FCS_LEN); 317 318 /* move to drv info position */ 319 ptr += RXDESC_SIZE; 320 321 /* update drv info */ 322 if (p_hal_data->ReceiveConfig & RCR_APP_BA_SSN) { 323 /* rtl8723s_update_bassn(padapter, pdrvinfo); */ 324 ptr += 4; 325 } 326 327 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */ 328 if (pattrib->physt) 329 update_recvframe_phyinfo(precvframe, (struct phy_stat *)ptr); 330 331 rtw_recv_entry(precvframe); 332 } else if (pattrib->pkt_rpt_type == C2H_PACKET) { 333 struct c2h_evt_hdr_t C2hEvent; 334 335 u16 len_c2h = pattrib->pkt_len; 336 u8 *pbuf_c2h = precvframe->u.hdr.rx_data; 337 u8 *pdata_c2h; 338 339 C2hEvent.CmdID = pbuf_c2h[0]; 340 C2hEvent.CmdSeq = pbuf_c2h[1]; 341 C2hEvent.CmdLen = (len_c2h-2); 342 pdata_c2h = pbuf_c2h+2; 343 344 if (C2hEvent.CmdID == C2H_CCX_TX_RPT) 345 CCX_FwC2HTxRpt_8723b(padapter, pdata_c2h, C2hEvent.CmdLen); 346 else 347 rtl8723bs_c2h_packet_handler(padapter, precvframe->u.hdr.rx_data, pattrib->pkt_len); 348 349 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 350 } 351 } 352 353 pkt_offset = round_up(pkt_offset, 8); 354 precvbuf->pdata += pkt_offset; 355 ptr = precvbuf->pdata; 356 precvframe = NULL; 357 pkt_copy = NULL; 358 } 359 360 rtw_enqueue_recvbuf(precvbuf, &precvpriv->free_recv_buf_queue); 361 } while (1); 362 } 363 364 /* 365 * Initialize recv private variable for hardware dependent 366 * 1. recv buf 367 * 2. recv tasklet 368 * 369 */ 370 s32 rtl8723bs_init_recv_priv(struct adapter *padapter) 371 { 372 s32 res; 373 u32 i, n; 374 struct recv_priv *precvpriv; 375 struct recv_buf *precvbuf; 376 377 res = _SUCCESS; 378 precvpriv = &padapter->recvpriv; 379 380 /* 3 1. init recv buffer */ 381 INIT_LIST_HEAD(&precvpriv->free_recv_buf_queue.queue); 382 spin_lock_init(&precvpriv->free_recv_buf_queue.lock); 383 INIT_LIST_HEAD(&precvpriv->recv_buf_pending_queue.queue); 384 spin_lock_init(&precvpriv->recv_buf_pending_queue.lock); 385 386 n = NR_RECVBUFF * sizeof(struct recv_buf) + 4; 387 precvpriv->pallocated_recv_buf = rtw_zmalloc(n); 388 if (!precvpriv->pallocated_recv_buf) { 389 res = _FAIL; 390 goto exit; 391 } 392 393 precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_recv_buf), 4); 394 395 /* init each recv buffer */ 396 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 397 for (i = 0; i < NR_RECVBUFF; i++) { 398 initrecvbuf(precvbuf, padapter); 399 400 if (!precvbuf->pskb) { 401 SIZE_PTR tmpaddr = 0; 402 SIZE_PTR alignment = 0; 403 404 precvbuf->pskb = rtw_skb_alloc(MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ); 405 406 if (precvbuf->pskb) { 407 precvbuf->pskb->dev = padapter->pnetdev; 408 409 tmpaddr = (SIZE_PTR)precvbuf->pskb->data; 410 alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1); 411 skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment)); 412 } 413 } 414 415 list_add_tail(&precvbuf->list, &precvpriv->free_recv_buf_queue.queue); 416 417 precvbuf++; 418 } 419 precvpriv->free_recv_buf_queue_cnt = i; 420 421 if (res == _FAIL) 422 goto initbuferror; 423 424 /* 3 2. init tasklet */ 425 tasklet_setup(&precvpriv->recv_tasklet, rtl8723bs_recv_tasklet); 426 427 goto exit; 428 429 initbuferror: 430 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 431 if (precvbuf) { 432 n = precvpriv->free_recv_buf_queue_cnt; 433 precvpriv->free_recv_buf_queue_cnt = 0; 434 for (i = 0; i < n ; i++) { 435 list_del_init(&precvbuf->list); 436 rtw_os_recvbuf_resource_free(padapter, precvbuf); 437 precvbuf++; 438 } 439 precvpriv->precv_buf = NULL; 440 } 441 442 kfree(precvpriv->pallocated_recv_buf); 443 precvpriv->pallocated_recv_buf = NULL; 444 445 exit: 446 return res; 447 } 448 449 /* 450 * Free recv private variable of hardware dependent 451 * 1. recv buf 452 * 2. recv tasklet 453 * 454 */ 455 void rtl8723bs_free_recv_priv(struct adapter *padapter) 456 { 457 u32 i; 458 struct recv_priv *precvpriv; 459 struct recv_buf *precvbuf; 460 461 precvpriv = &padapter->recvpriv; 462 463 /* 3 1. kill tasklet */ 464 tasklet_kill(&precvpriv->recv_tasklet); 465 466 /* 3 2. free all recv buffers */ 467 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 468 if (precvbuf) { 469 precvpriv->free_recv_buf_queue_cnt = 0; 470 for (i = 0; i < NR_RECVBUFF; i++) { 471 list_del_init(&precvbuf->list); 472 rtw_os_recvbuf_resource_free(padapter, precvbuf); 473 precvbuf++; 474 } 475 precvpriv->precv_buf = NULL; 476 } 477 478 kfree(precvpriv->pallocated_recv_buf); 479 precvpriv->pallocated_recv_buf = NULL; 480 } 481