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 = 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 } 153 154 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 } 174 175 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 } 192 193 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 } 206 207 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 } 218 219 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 */ 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 */ 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