1 /* 2 * Copyright (c) 2013-2021 The Linux Foundation. All rights reserved. 3 * Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. 4 * 5 * Permission to use, copy, modify, and/or distribute this software for 6 * any purpose with or without fee is hereby granted, provided that the 7 * above copyright notice and this permission notice appear in all 8 * copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 11 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 12 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 13 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 14 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 15 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 16 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 17 * PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include "htc_debug.h" 21 #include "htc_internal.h" 22 #include "htc_credit_history.h" 23 #include <qdf_mem.h> /* qdf_mem_malloc */ 24 #include <qdf_nbuf.h> /* qdf_nbuf_t */ 25 #include "qdf_module.h" 26 27 /* #define USB_HIF_SINGLE_PIPE_DATA_SCHED */ 28 /* #ifdef USB_HIF_SINGLE_PIPE_DATA_SCHED */ 29 #define DATA_EP_SIZE 4 30 /* #endif */ 31 #define HTC_DATA_RESOURCE_THRS 256 32 #define HTC_DATA_MINDESC_PERPACKET 2 33 34 /* maximum number of requeue attempts before print */ 35 #define MAX_REQUEUE_WARN 5 36 37 enum HTC_SEND_QUEUE_RESULT { 38 HTC_SEND_QUEUE_OK = 0, /* packet was queued */ 39 HTC_SEND_QUEUE_DROP = 1, /* this packet should be dropped */ 40 }; 41 42 #ifndef DEBUG_CREDIT 43 #define DEBUG_CREDIT 0 44 #endif 45 46 #if DEBUG_CREDIT 47 /* bit mask to enable debug certain endpoint */ 48 static unsigned int ep_debug_mask = 49 (1 << ENDPOINT_0) | (1 << ENDPOINT_1) | (1 << ENDPOINT_2); 50 #endif 51 52 #ifdef QCA_WIFI_EMULATION 53 #define HTC_EMULATION_DELAY_IN_MS 20 54 /** 55 * htc_add_emulation_delay() - Adds a delay in before proceeding, only for 56 * emulation 57 * 58 * Return: None 59 */ 60 static inline void htc_add_emulation_delay(void) 61 { 62 qdf_mdelay(HTC_EMULATION_DELAY_IN_MS); 63 } 64 #else 65 static inline void htc_add_emulation_delay(void) 66 { 67 } 68 #endif 69 70 void htc_dump_counter_info(HTC_HANDLE HTCHandle) 71 { 72 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 73 74 if (!target) 75 return; 76 77 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 78 ("\n%s: ce_send_cnt = %d, TX_comp_cnt = %d\n", 79 __func__, target->ce_send_cnt, target->TX_comp_cnt)); 80 } 81 82 int htc_get_tx_queue_depth(HTC_HANDLE htc_handle, HTC_ENDPOINT_ID endpoint_id) 83 { 84 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 85 HTC_ENDPOINT *endpoint = &target->endpoint[endpoint_id]; 86 87 return HTC_PACKET_QUEUE_DEPTH(&endpoint->TxQueue); 88 } 89 qdf_export_symbol(htc_get_tx_queue_depth); 90 91 void htc_get_control_endpoint_tx_host_credits(HTC_HANDLE HTCHandle, 92 int *credits) 93 { 94 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 95 HTC_ENDPOINT *pEndpoint; 96 int i; 97 98 if (!credits || !target) { 99 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("%s: invalid args", __func__)); 100 return; 101 } 102 103 *credits = 0; 104 LOCK_HTC_TX(target); 105 for (i = 0; i < ENDPOINT_MAX; i++) { 106 pEndpoint = &target->endpoint[i]; 107 if (pEndpoint->service_id == WMI_CONTROL_SVC) { 108 *credits = pEndpoint->TxCredits; 109 break; 110 } 111 } 112 UNLOCK_HTC_TX(target); 113 } 114 115 static inline void restore_tx_packet(HTC_TARGET *target, HTC_PACKET *pPacket) 116 { 117 qdf_nbuf_t netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 118 119 if (pPacket->PktInfo.AsTx.Flags & HTC_TX_PACKET_FLAG_FIXUP_NETBUF) { 120 qdf_nbuf_unmap(target->osdev, netbuf, QDF_DMA_TO_DEVICE); 121 pPacket->PktInfo.AsTx.Flags &= ~HTC_TX_PACKET_FLAG_FIXUP_NETBUF; 122 } 123 if (pPacket->PktInfo.AsTx.Flags & 124 HTC_TX_PACKET_FLAG_HTC_HEADER_IN_NETBUF_DATA) { 125 qdf_nbuf_pull_head(netbuf, sizeof(HTC_FRAME_HDR)); 126 pPacket->PktInfo.AsTx.Flags &= 127 ~HTC_TX_PACKET_FLAG_HTC_HEADER_IN_NETBUF_DATA; 128 } 129 } 130 131 static void send_packet_completion(HTC_TARGET *target, HTC_PACKET *pPacket) 132 { 133 HTC_ENDPOINT *pEndpoint = &target->endpoint[pPacket->Endpoint]; 134 HTC_EP_SEND_PKT_COMPLETE EpTxComplete; 135 136 if ((pPacket->PktInfo.AsTx.Flags & HTC_TX_PACKET_FLAG_FIXUP_NETBUF) && 137 (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint))) 138 target->nbuf_nfc_unmap_count++; 139 140 restore_tx_packet(target, pPacket); 141 142 /* 143 * In case of SSR, we cannot call the upper layer completion 144 * callbacks, hence just free the nbuf and HTC packet here. 145 */ 146 if (target->hif_dev && hif_get_target_status(target->hif_dev)) { 147 htc_free_control_tx_packet(target, pPacket); 148 return; 149 } 150 151 /* do completion */ 152 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 153 ("HTC calling ep %d send complete callback on packet %pK\n", 154 pEndpoint->Id, pPacket)); 155 156 EpTxComplete = pEndpoint->EpCallBacks.EpTxComplete; 157 if (EpTxComplete) 158 EpTxComplete(pEndpoint->EpCallBacks.pContext, pPacket); 159 else 160 qdf_nbuf_free(pPacket->pPktContext); 161 162 163 } 164 165 #ifdef FEATURE_RUNTIME_PM 166 /** 167 * log_packet_info() - Log HTC packet information 168 * 169 * @target: handle of HTC context 170 * @pPacket: handle of HTC packet 171 * 172 * Return: None 173 */ 174 static void log_packet_info(HTC_TARGET *target, HTC_PACKET *pPacket) 175 { 176 HTC_ENDPOINT *pEndpoint = &target->endpoint[pPacket->Endpoint]; 177 HTC_EP_LOG_PKT ep_log_pkt; 178 qdf_nbuf_t netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 179 180 ep_log_pkt = pEndpoint->EpCallBacks.ep_log_pkt; 181 if (ep_log_pkt) { 182 qdf_nbuf_pull_head(netbuf, sizeof(HTC_FRAME_HDR)); 183 ep_log_pkt(pEndpoint->EpCallBacks.pContext, pPacket); 184 qdf_nbuf_push_head(netbuf, sizeof(HTC_FRAME_HDR)); 185 } 186 } 187 188 /** 189 * htc_inc_htt_runtime_cnt() - Increment htc htt runtime count 190 * @target: handle of HTC context 191 * 192 * Return: None 193 */ 194 static inline 195 void htc_inc_htt_runtime_cnt(HTC_TARGET *target) 196 { 197 qdf_atomic_inc(&target->htc_htt_runtime_cnt); 198 } 199 #else 200 static void log_packet_info(HTC_TARGET *target, HTC_PACKET *pPacket) 201 { 202 } 203 204 static inline 205 void htc_inc_htt_runtime_cnt(HTC_TARGET *target) 206 { 207 } 208 #endif 209 210 void htc_send_complete_check_cleanup(void *context) 211 { 212 HTC_ENDPOINT *pEndpoint = (HTC_ENDPOINT *) context; 213 214 htc_send_complete_check(pEndpoint, 1); 215 } 216 217 HTC_PACKET *allocate_htc_bundle_packet(HTC_TARGET *target) 218 { 219 HTC_PACKET *pPacket; 220 HTC_PACKET_QUEUE *pQueueSave; 221 qdf_nbuf_t netbuf; 222 223 LOCK_HTC_TX(target); 224 if (!target->pBundleFreeList) { 225 UNLOCK_HTC_TX(target); 226 netbuf = qdf_nbuf_alloc(NULL, 227 target->MaxMsgsPerHTCBundle * 228 target->TargetCreditSize, 0, 4, false); 229 AR_DEBUG_ASSERT(netbuf); 230 if (!netbuf) 231 return NULL; 232 pPacket = qdf_mem_malloc(sizeof(HTC_PACKET)); 233 AR_DEBUG_ASSERT(pPacket); 234 if (!pPacket) { 235 qdf_nbuf_free(netbuf); 236 return NULL; 237 } 238 pQueueSave = qdf_mem_malloc(sizeof(HTC_PACKET_QUEUE)); 239 AR_DEBUG_ASSERT(pQueueSave); 240 if (!pQueueSave) { 241 qdf_nbuf_free(netbuf); 242 qdf_mem_free(pPacket); 243 return NULL; 244 } 245 INIT_HTC_PACKET_QUEUE(pQueueSave); 246 pPacket->pContext = pQueueSave; 247 SET_HTC_PACKET_NET_BUF_CONTEXT(pPacket, netbuf); 248 pPacket->pBuffer = qdf_nbuf_data(netbuf); 249 pPacket->BufferLength = qdf_nbuf_len(netbuf); 250 251 /* store the original head room so that we can restore this 252 * when we "free" the packet. 253 * free packet puts the packet back on the free list 254 */ 255 pPacket->netbufOrigHeadRoom = qdf_nbuf_headroom(netbuf); 256 return pPacket; 257 } 258 /* already done malloc - restore from free list */ 259 pPacket = target->pBundleFreeList; 260 AR_DEBUG_ASSERT(pPacket); 261 if (!pPacket) { 262 UNLOCK_HTC_TX(target); 263 return NULL; 264 } 265 target->pBundleFreeList = (HTC_PACKET *) pPacket->ListLink.pNext; 266 UNLOCK_HTC_TX(target); 267 pPacket->ListLink.pNext = NULL; 268 269 return pPacket; 270 } 271 272 void free_htc_bundle_packet(HTC_TARGET *target, HTC_PACKET *pPacket) 273 { 274 uint32_t curentHeadRoom; 275 qdf_nbuf_t netbuf; 276 HTC_PACKET_QUEUE *pQueueSave; 277 278 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 279 AR_DEBUG_ASSERT(netbuf); 280 if (!netbuf) { 281 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 282 ("\n%s: Invalid netbuf in HTC Packet\n", 283 __func__)); 284 return; 285 } 286 /* HIF adds data to the headroom section of the nbuf, restore their 287 * original size. If this is not done, headroom keeps shrinking with 288 * every HIF send and eventually HIF ends up doing another malloc big 289 * enough to store the data + its header 290 */ 291 292 curentHeadRoom = qdf_nbuf_headroom(netbuf); 293 qdf_nbuf_pull_head(netbuf, 294 pPacket->netbufOrigHeadRoom - curentHeadRoom); 295 qdf_nbuf_trim_tail(netbuf, qdf_nbuf_len(netbuf)); 296 297 /* restore the pBuffer pointer. HIF changes this */ 298 pPacket->pBuffer = qdf_nbuf_data(netbuf); 299 pPacket->BufferLength = qdf_nbuf_len(netbuf); 300 301 /* restore queue */ 302 pQueueSave = (HTC_PACKET_QUEUE *) pPacket->pContext; 303 if (qdf_unlikely(!pQueueSave)) { 304 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 305 ("\n%s: Invalid pQueueSave in HTC Packet\n", 306 __func__)); 307 AR_DEBUG_ASSERT(pQueueSave); 308 } else 309 INIT_HTC_PACKET_QUEUE(pQueueSave); 310 311 LOCK_HTC_TX(target); 312 if (!target->pBundleFreeList) { 313 target->pBundleFreeList = pPacket; 314 pPacket->ListLink.pNext = NULL; 315 } else { 316 pPacket->ListLink.pNext = (DL_LIST *) target->pBundleFreeList; 317 target->pBundleFreeList = pPacket; 318 } 319 UNLOCK_HTC_TX(target); 320 } 321 322 #if defined(DEBUG_HL_LOGGING) && defined(CONFIG_HL_SUPPORT) 323 324 /** 325 * htc_send_update_tx_bundle_stats() - update tx bundle stats depends 326 * on max bundle size 327 * @target: hif context 328 * @data_len: tx data len 329 * @TxCreditSize: endpoint tx credit size 330 * 331 * Return: None 332 */ 333 static inline void 334 htc_send_update_tx_bundle_stats(HTC_TARGET *target, 335 qdf_size_t data_len, 336 int TxCreditSize) 337 { 338 int index = ((data_len + TxCreditSize - 1) / TxCreditSize) - 1; 339 340 if (index < HTC_MAX_MSG_PER_BUNDLE_TX) 341 target->tx_bundle_stats[index]++; 342 } 343 344 /** 345 * htc_issue_tx_bundle_stats_inc() - increment in tx bundle stats 346 * on max bundle size 347 * @target: hif context 348 * 349 * Return: None 350 */ 351 static inline void 352 htc_issue_tx_bundle_stats_inc(HTC_TARGET *target) 353 { 354 target->tx_bundle_stats[0]++; 355 } 356 #else 357 358 static inline void 359 htc_send_update_tx_bundle_stats(HTC_TARGET *target, 360 qdf_size_t data_len, 361 int TxCreditSize) 362 { 363 } 364 365 static inline void 366 htc_issue_tx_bundle_stats_inc(HTC_TARGET *target) 367 { 368 } 369 #endif 370 371 #if defined(HIF_USB) || defined(HIF_SDIO) 372 #ifdef ENABLE_BUNDLE_TX 373 static QDF_STATUS htc_send_bundled_netbuf(HTC_TARGET *target, 374 HTC_ENDPOINT *pEndpoint, 375 unsigned char *pBundleBuffer, 376 HTC_PACKET *pPacketTx) 377 { 378 qdf_size_t data_len; 379 QDF_STATUS status; 380 qdf_nbuf_t bundleBuf; 381 uint32_t data_attr = 0; 382 383 bundleBuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacketTx); 384 data_len = pBundleBuffer - qdf_nbuf_data(bundleBuf); 385 qdf_nbuf_put_tail(bundleBuf, data_len); 386 SET_HTC_PACKET_INFO_TX(pPacketTx, 387 target, 388 pBundleBuffer, 389 data_len, 390 pEndpoint->Id, HTC_TX_PACKET_TAG_BUNDLED); 391 LOCK_HTC_TX(target); 392 HTC_PACKET_ENQUEUE(&pEndpoint->TxLookupQueue, pPacketTx); 393 pEndpoint->ul_outstanding_cnt++; 394 UNLOCK_HTC_TX(target); 395 #if DEBUG_BUNDLE 396 qdf_print(" Send bundle EP%d buffer size:0x%x, total:0x%x, count:%d.", 397 pEndpoint->Id, 398 pEndpoint->TxCreditSize, 399 data_len, data_len / pEndpoint->TxCreditSize); 400 #endif 401 402 htc_send_update_tx_bundle_stats(target, data_len, 403 pEndpoint->TxCreditSize); 404 405 status = hif_send_head(target->hif_dev, 406 pEndpoint->UL_PipeID, 407 pEndpoint->Id, data_len, 408 bundleBuf, data_attr); 409 if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) { 410 HTC_PACKET_QUEUE requeue; 411 412 qdf_print("hif_send_head failed(len=%zu).", data_len); 413 INIT_HTC_PACKET_QUEUE(&requeue); 414 LOCK_HTC_TX(target); 415 pEndpoint->ul_outstanding_cnt--; 416 HTC_PACKET_REMOVE(&pEndpoint->TxLookupQueue, pPacketTx); 417 418 if (pPacketTx->PktInfo.AsTx.Tag == HTC_TX_PACKET_TAG_BUNDLED) { 419 HTC_PACKET *temp_packet; 420 HTC_PACKET_QUEUE *packet_queue = 421 (HTC_PACKET_QUEUE *)pPacketTx->pContext; 422 423 HTC_PACKET_QUEUE_ITERATE_ALLOW_REMOVE(packet_queue, 424 temp_packet) { 425 HTC_PACKET_ENQUEUE(&requeue, temp_packet); 426 } HTC_PACKET_QUEUE_ITERATE_END; 427 428 UNLOCK_HTC_TX(target); 429 free_htc_bundle_packet(target, pPacketTx); 430 LOCK_HTC_TX(target); 431 432 } else { 433 HTC_PACKET_ENQUEUE(&requeue, pPacketTx); 434 } 435 436 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxQueue, 437 &requeue); 438 UNLOCK_HTC_TX(target); 439 } 440 return status; 441 } 442 443 #ifdef QCA_TX_PADDING_CREDIT_SUPPORT 444 #define SDIO_BLOCK_SIZE 512 445 static int htc_tx_pad_credit_avail(HTC_ENDPOINT *ep) 446 { 447 int ret = 0; 448 449 if (!ep || !ep->EpCallBacks.pContext || 450 !ep->EpCallBacks.ep_padding_credit_update) 451 return 1; 452 453 ret = ep->EpCallBacks.ep_padding_credit_update(ep->EpCallBacks.pContext, 454 0); 455 456 if (ret < 2) 457 AR_DEBUG_PRINTF(ATH_DEBUG_INFO, ("%s ret %d\n", __func__, ret)); 458 459 return ret; 460 } 461 462 static bool htc_handle_extra_tx_credit(HTC_ENDPOINT *ep, 463 HTC_PACKET *p_last_htc_pkt, 464 unsigned char *p_last_pkt_bundle_buffer, 465 unsigned char **p_bundle_buffer, 466 int tot_data_len) 467 { 468 bool extra_tx_credit = FALSE; 469 HTC_FRAME_HDR *p_htc_hdr; 470 int first_buf_bundled_len = 0, last_buf_len = 0; 471 int sdio_pad = 0, free_space = 0; 472 int (*update_ep_padding_credit)(void *, int); 473 474 update_ep_padding_credit = ep->EpCallBacks.ep_padding_credit_update; 475 476 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 477 ("%s Tot data_len = %d\n", __func__, tot_data_len)); 478 479 if (!p_last_htc_pkt) 480 return extra_tx_credit; 481 482 last_buf_len = (p_last_htc_pkt->ActualLength + HTC_HDR_LENGTH); 483 if (tot_data_len != last_buf_len) { 484 first_buf_bundled_len = tot_data_len - ep->TxCreditSize; 485 free_space = tot_data_len - 486 (first_buf_bundled_len + last_buf_len); 487 } else { 488 free_space = ep->TxCreditSize - tot_data_len; 489 } 490 491 sdio_pad = SDIO_BLOCK_SIZE - ((first_buf_bundled_len + last_buf_len) % 492 SDIO_BLOCK_SIZE); 493 494 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 495 ("%s first_buf_bundled_len = %d last_buf_len = %d\n", 496 __func__, first_buf_bundled_len, last_buf_len)); 497 498 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 499 ("%s sdio_pad = %d free_space = %d\n", __func__, 500 sdio_pad, free_space)); 501 502 if (sdio_pad <= free_space) { 503 if (p_bundle_buffer && *p_bundle_buffer) { 504 /* Align Tx bundled buf to avoid a extra Padding buf */ 505 *p_bundle_buffer -= (free_space - sdio_pad); 506 } 507 } else { 508 /* Extra Padding Buffer needed, consume extra tx credit */ 509 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 510 ("%s Used a Tx credit for Padding Buffer\n", 511 __func__)); 512 p_htc_hdr = (HTC_FRAME_HDR *)(p_last_pkt_bundle_buffer); 513 p_htc_hdr->Flags |= HTC_FLAGS_PADDING_CHECK; 514 extra_tx_credit = TRUE; 515 if (ep->EpCallBacks.ep_padding_credit_update) { 516 /* Decrement 1 credit at host, 517 * due to extra tx credit consumed by padding buffer 518 */ 519 update_ep_padding_credit(ep->EpCallBacks.pContext, -1); 520 } 521 } 522 return extra_tx_credit; 523 } 524 #else 525 static int htc_tx_pad_credit_avail(HTC_ENDPOINT *ep) 526 { 527 return 1; 528 } 529 530 static bool htc_handle_extra_tx_credit(HTC_ENDPOINT *ep, 531 HTC_PACKET *p_last_htc_pkt, 532 unsigned char *p_last_pkt_bundle_buffer, 533 unsigned char **p_bundle_buffer, 534 int tot_data_len) 535 { 536 return FALSE; 537 } 538 #endif 539 540 /** 541 * htc_issue_packets_bundle() - HTC function to send bundle packets from a queue 542 * @target: HTC target on which packets need to be sent 543 * @pEndpoint: logical endpoint on which packets needs to be sent 544 * @pPktQueue: HTC packet queue containing the list of packets to be sent 545 * 546 * Return: void 547 */ 548 static void htc_issue_packets_bundle(HTC_TARGET *target, 549 HTC_ENDPOINT *pEndpoint, 550 HTC_PACKET_QUEUE *pPktQueue) 551 { 552 int i, frag_count, nbytes; 553 qdf_nbuf_t netbuf, bundleBuf; 554 unsigned char *pBundleBuffer = NULL; 555 HTC_PACKET *pPacket = NULL, *pPacketTx = NULL; 556 HTC_FRAME_HDR *pHtcHdr; 557 int last_credit_pad = 0; 558 int creditPad, creditRemainder, transferLength, bundlesSpaceRemaining = 559 0; 560 HTC_PACKET_QUEUE *pQueueSave = NULL; 561 HTC_PACKET *p_last_htc_pkt = NULL; 562 unsigned char *p_last_pkt_bundle_buffer = NULL; 563 564 bundlesSpaceRemaining = 565 target->MaxMsgsPerHTCBundle * pEndpoint->TxCreditSize; 566 pPacketTx = allocate_htc_bundle_packet(target); 567 if (!pPacketTx) { 568 /* good time to panic */ 569 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 570 ("allocate_htc_bundle_packet failed\n")); 571 AR_DEBUG_ASSERT(false); 572 return; 573 } 574 bundleBuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacketTx); 575 pBundleBuffer = qdf_nbuf_data(bundleBuf); 576 pQueueSave = (HTC_PACKET_QUEUE *) pPacketTx->pContext; 577 while (1) { 578 if (pEndpoint->EpCallBacks.ep_padding_credit_update) { 579 if (htc_tx_pad_credit_avail(pEndpoint) < 1) 580 break; 581 } 582 pPacket = htc_packet_dequeue(pPktQueue); 583 if (!pPacket) 584 break; 585 creditPad = 0; 586 transferLength = pPacket->ActualLength + HTC_HDR_LENGTH; 587 creditRemainder = transferLength % pEndpoint->TxCreditSize; 588 if (creditRemainder != 0) { 589 if (transferLength < pEndpoint->TxCreditSize) { 590 creditPad = pEndpoint->TxCreditSize - 591 transferLength; 592 } else { 593 creditPad = creditRemainder; 594 } 595 transferLength += creditPad; 596 } 597 598 if (bundlesSpaceRemaining < transferLength) { 599 htc_handle_extra_tx_credit(pEndpoint, p_last_htc_pkt, 600 p_last_pkt_bundle_buffer, 601 &pBundleBuffer, 602 pBundleBuffer - 603 qdf_nbuf_data(bundleBuf)); 604 605 /* send out previous buffer */ 606 htc_send_bundled_netbuf(target, pEndpoint, 607 pBundleBuffer - last_credit_pad, 608 pPacketTx); 609 /* One packet has been dequeued from sending queue when enter 610 * this loop, so need to add 1 back for this checking. 611 */ 612 if ((HTC_PACKET_QUEUE_DEPTH(pPktQueue) + 1) < 613 HTC_MIN_MSG_PER_BUNDLE) { 614 HTC_PACKET_ENQUEUE_TO_HEAD(pPktQueue, pPacket); 615 return; 616 } 617 bundlesSpaceRemaining = 618 target->MaxMsgsPerHTCBundle * 619 pEndpoint->TxCreditSize; 620 pPacketTx = allocate_htc_bundle_packet(target); 621 if (!pPacketTx) { 622 HTC_PACKET_ENQUEUE_TO_HEAD(pPktQueue, pPacket); 623 /* good time to panic */ 624 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 625 ("allocate_htc_bundle_packet failed\n")); 626 AR_DEBUG_ASSERT(false); 627 return; 628 } 629 bundleBuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacketTx); 630 pBundleBuffer = qdf_nbuf_data(bundleBuf); 631 pQueueSave = (HTC_PACKET_QUEUE *) pPacketTx->pContext; 632 } 633 634 p_last_htc_pkt = pPacket; 635 p_last_pkt_bundle_buffer = pBundleBuffer; 636 637 bundlesSpaceRemaining -= transferLength; 638 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 639 640 if (hif_get_bus_type(target->hif_dev) != QDF_BUS_TYPE_USB) { 641 pHtcHdr = (HTC_FRAME_HDR *)qdf_nbuf_get_frag_vaddr( 642 netbuf, 0); 643 HTC_WRITE32(pHtcHdr, 644 SM(pPacket->ActualLength, 645 HTC_FRAME_HDR_PAYLOADLEN) | 646 SM(pPacket->PktInfo.AsTx.SendFlags | 647 HTC_FLAGS_SEND_BUNDLE, 648 HTC_FRAME_HDR_FLAGS) | 649 SM(pPacket->Endpoint, 650 HTC_FRAME_HDR_ENDPOINTID)); 651 HTC_WRITE32((uint32_t *) pHtcHdr + 1, 652 SM(pPacket->PktInfo.AsTx.SeqNo, 653 HTC_FRAME_HDR_CONTROLBYTES1) | SM(creditPad, 654 HTC_FRAME_HDR_RESERVED)); 655 pHtcHdr->reserved = creditPad; 656 } 657 frag_count = qdf_nbuf_get_num_frags(netbuf); 658 nbytes = pPacket->ActualLength + HTC_HDR_LENGTH; 659 for (i = 0; i < frag_count && nbytes > 0; i++) { 660 int frag_len = qdf_nbuf_get_frag_len(netbuf, i); 661 unsigned char *frag_addr = 662 qdf_nbuf_get_frag_vaddr(netbuf, i); 663 if (frag_len > nbytes) 664 frag_len = nbytes; 665 qdf_mem_copy(pBundleBuffer, frag_addr, frag_len); 666 nbytes -= frag_len; 667 pBundleBuffer += frag_len; 668 } 669 HTC_PACKET_ENQUEUE(pQueueSave, pPacket); 670 pBundleBuffer += creditPad; 671 672 /* last one can't be packed. */ 673 if (hif_get_bus_type(target->hif_dev) == QDF_BUS_TYPE_USB) 674 last_credit_pad = creditPad; 675 } 676 /* send out remaining buffer */ 677 if (pBundleBuffer != qdf_nbuf_data(bundleBuf)) { 678 htc_handle_extra_tx_credit(pEndpoint, p_last_htc_pkt, 679 p_last_pkt_bundle_buffer, 680 &pBundleBuffer, 681 pBundleBuffer - 682 qdf_nbuf_data(bundleBuf)); 683 684 htc_send_bundled_netbuf(target, pEndpoint, 685 pBundleBuffer - last_credit_pad, 686 pPacketTx); 687 } else { 688 free_htc_bundle_packet(target, pPacketTx); 689 } 690 } 691 #endif /* ENABLE_BUNDLE_TX */ 692 #else 693 static int htc_tx_pad_credit_avail(HTC_ENDPOINT *ep) 694 { 695 return 1; 696 } 697 698 bool htc_handle_extra_tx_credit(HTC_ENDPOINT *ep, 699 HTC_PACKET *p_last_htc_pkt, 700 unsigned char *p_last_pkt_bundle_buffer, 701 unsigned char **p_bundle_buffer, 702 int tot_data_len); 703 bool htc_handle_extra_tx_credit(HTC_ENDPOINT *ep, 704 HTC_PACKET *p_last_htc_pkt, 705 unsigned char *p_last_pkt_bundle_buffer, 706 unsigned char **p_bundle_buffer, 707 int tot_data_len) 708 { 709 return FALSE; 710 } 711 712 static void htc_issue_packets_bundle(HTC_TARGET *target, 713 HTC_ENDPOINT *pEndpoint, 714 HTC_PACKET_QUEUE *pPktQueue) 715 { 716 } 717 #endif 718 719 /** 720 * htc_issue_packets() - HTC function to send packets from a queue 721 * @target: HTC target on which packets need to be sent 722 * @pEndpoint: logical endpoint on which packets needs to be sent 723 * @pPktQueue: HTC packet queue containing the list of packets to be sent 724 * 725 * Return: QDF_STATUS_SUCCESS on success and error QDF status on failure 726 */ 727 static QDF_STATUS htc_issue_packets(HTC_TARGET *target, 728 HTC_ENDPOINT *pEndpoint, 729 HTC_PACKET_QUEUE *pPktQueue) 730 { 731 QDF_STATUS status = QDF_STATUS_SUCCESS; 732 qdf_nbuf_t netbuf; 733 HTC_PACKET *pPacket = NULL; 734 uint16_t payloadLen; 735 HTC_FRAME_HDR *pHtcHdr; 736 uint32_t data_attr = 0; 737 enum qdf_bus_type bus_type; 738 QDF_STATUS ret; 739 bool rt_put = false; 740 bool used_extra_tx_credit = false; 741 uint8_t *buf = NULL; 742 int (*update_ep_padding_credit)(void *, int); 743 void *ctx = NULL; 744 bool rt_put_in_resp; 745 int32_t sys_state = HIF_SYSTEM_PM_STATE_ON; 746 747 update_ep_padding_credit = 748 pEndpoint->EpCallBacks.ep_padding_credit_update; 749 750 bus_type = hif_get_bus_type(target->hif_dev); 751 752 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 753 ("+htc_issue_packets: Queue: %pK, Pkts %d\n", pPktQueue, 754 HTC_PACKET_QUEUE_DEPTH(pPktQueue))); 755 while (true) { 756 rt_put_in_resp = false; 757 if (HTC_TX_BUNDLE_ENABLED(target) && 758 HTC_PACKET_QUEUE_DEPTH(pPktQueue) >= 759 HTC_MIN_MSG_PER_BUNDLE) { 760 switch (bus_type) { 761 case QDF_BUS_TYPE_SDIO: 762 if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) 763 break; 764 if (update_ep_padding_credit) { 765 if (htc_tx_pad_credit_avail 766 (pEndpoint) < 1) 767 break; 768 } 769 fallthrough; 770 case QDF_BUS_TYPE_USB: 771 htc_issue_packets_bundle(target, 772 pEndpoint, 773 pPktQueue); 774 break; 775 default: 776 break; 777 } 778 } 779 /* if not bundling or there was a packet that could not be 780 * placed in a bundle, and send it by normal way 781 */ 782 if (pEndpoint->EpCallBacks.ep_padding_credit_update) { 783 if (htc_tx_pad_credit_avail(pEndpoint) < 1) { 784 status = QDF_STATUS_E_FAILURE; 785 break; 786 } 787 } 788 789 pPacket = htc_packet_dequeue(pPktQueue); 790 if (!pPacket) { 791 /* local queue is fully drained */ 792 break; 793 } 794 795 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 796 AR_DEBUG_ASSERT(netbuf); 797 /* Non-credit enabled endpoints have been mapped and setup by 798 * now, so no need to revisit the HTC headers 799 */ 800 if (IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 801 802 payloadLen = pPacket->ActualLength; 803 /* setup HTC frame header */ 804 805 pHtcHdr = (HTC_FRAME_HDR *) 806 qdf_nbuf_get_frag_vaddr(netbuf, 0); 807 if (qdf_unlikely(!pHtcHdr)) { 808 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 809 ("%s Invalid pHtcHdr\n", 810 __func__)); 811 AR_DEBUG_ASSERT(pHtcHdr); 812 status = QDF_STATUS_E_FAILURE; 813 break; 814 } 815 816 HTC_WRITE32(pHtcHdr, 817 SM(payloadLen, 818 HTC_FRAME_HDR_PAYLOADLEN) | 819 SM(pPacket->PktInfo.AsTx.SendFlags, 820 HTC_FRAME_HDR_FLAGS) | 821 SM(pPacket->Endpoint, 822 HTC_FRAME_HDR_ENDPOINTID)); 823 HTC_WRITE32(((uint32_t *) pHtcHdr) + 1, 824 SM(pPacket->PktInfo.AsTx.SeqNo, 825 HTC_FRAME_HDR_CONTROLBYTES1)); 826 827 /* 828 * Now that the HTC frame header has been added, the 829 * netbuf can be mapped. This only applies to non-data 830 * frames, since data frames were already mapped as they 831 * entered into the driver. 832 */ 833 ret = qdf_nbuf_map(target->osdev, 834 GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket), 835 QDF_DMA_TO_DEVICE); 836 if (ret != QDF_STATUS_SUCCESS) { 837 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 838 ("%s nbuf Map Fail Endpnt %pK\n", 839 __func__, pEndpoint)); 840 HTC_PACKET_ENQUEUE_TO_HEAD(pPktQueue, pPacket); 841 status = QDF_STATUS_E_FAILURE; 842 break; 843 } 844 pPacket->PktInfo.AsTx.Flags |= 845 HTC_TX_PACKET_FLAG_FIXUP_NETBUF; 846 } 847 848 if (!pEndpoint->async_update) { 849 LOCK_HTC_TX(target); 850 } 851 /* store in look up queue to match completions */ 852 HTC_PACKET_ENQUEUE(&pEndpoint->TxLookupQueue, pPacket); 853 INC_HTC_EP_STAT(pEndpoint, TxIssued, 1); 854 pEndpoint->ul_outstanding_cnt++; 855 if (!pEndpoint->async_update) { 856 UNLOCK_HTC_TX(target); 857 hif_send_complete_check(target->hif_dev, 858 pEndpoint->UL_PipeID, false); 859 } 860 861 if (pPacket->PktInfo.AsTx.Tag == HTC_TX_PACKET_SYSTEM_SUSPEND) { 862 sys_state = hif_system_pm_get_state(target->hif_dev); 863 hif_system_pm_set_state_suspending(target->hif_dev); 864 } 865 866 htc_packet_set_magic_cookie(pPacket, HTC_PACKET_MAGIC_COOKIE); 867 /* 868 * For HTT messages without a response from fw, 869 * do the runtime put here. 870 * otherwise runtime put will be done when the fw response comes 871 */ 872 if (pPacket->PktInfo.AsTx.Tag == HTC_TX_PACKET_TAG_RUNTIME_PUT) { 873 rt_put = true; 874 } else if (pPacket->PktInfo.AsTx.Tag == 875 HTC_TX_PACKET_TAG_RTPM_PUT_RC) { 876 rt_put_in_resp = true; 877 htc_inc_htt_runtime_cnt(target); 878 } 879 880 #if DEBUG_BUNDLE 881 qdf_print(" Send single EP%d buffer size:0x%x, total:0x%x.", 882 pEndpoint->Id, 883 pEndpoint->TxCreditSize, 884 HTC_HDR_LENGTH + pPacket->ActualLength); 885 #endif 886 buf = (uint8_t *)qdf_nbuf_get_frag_vaddr(netbuf, 0); 887 used_extra_tx_credit = 888 htc_handle_extra_tx_credit(pEndpoint, pPacket, buf, 889 NULL, pPacket->ActualLength + 890 HTC_HDR_LENGTH); 891 892 status = hif_send_head(target->hif_dev, 893 pEndpoint->UL_PipeID, pEndpoint->Id, 894 HTC_HDR_LENGTH + pPacket->ActualLength, 895 netbuf, data_attr); 896 897 if (status != QDF_STATUS_SUCCESS) { 898 if (rt_put_in_resp) 899 htc_dec_return_htt_runtime_cnt((void *)target); 900 901 if (pPacket->PktInfo.AsTx.Tag == 902 HTC_TX_PACKET_SYSTEM_SUSPEND) 903 __hif_system_pm_set_state(target->hif_dev, 904 sys_state); 905 906 if (pEndpoint->EpCallBacks.ep_padding_credit_update) { 907 if (used_extra_tx_credit) { 908 ctx = pEndpoint->EpCallBacks.pContext; 909 update_ep_padding_credit(ctx, 1); 910 } 911 } 912 } 913 914 htc_issue_tx_bundle_stats_inc(target); 915 916 target->ce_send_cnt++; 917 pEndpoint->htc_send_cnt++; 918 919 if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) { 920 if (status != QDF_STATUS_E_RESOURCES) { 921 /* TODO : if more than 1 endpoint maps to the 922 * same PipeID it is possible to run out of 923 * resources in the HIF layer. Don't emit the 924 * error 925 */ 926 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 927 ("hif_send Failed status:%d\n", 928 status)); 929 } else { 930 if (target->htc_pkt_dbg) { 931 if (pEndpoint->num_requeues_warn > 932 MAX_REQUEUE_WARN) { 933 hif_print_napi_stats(target->hif_dev); 934 } 935 } 936 } 937 938 /* only unmap if we mapped in this function */ 939 if (IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 940 qdf_nbuf_unmap(target->osdev, 941 GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket), 942 QDF_DMA_TO_DEVICE); 943 pPacket->PktInfo.AsTx.Flags &= 944 ~HTC_TX_PACKET_FLAG_FIXUP_NETBUF; 945 } 946 947 if (!pEndpoint->async_update) { 948 LOCK_HTC_TX(target); 949 } 950 target->ce_send_cnt--; 951 pEndpoint->htc_send_cnt--; 952 pEndpoint->ul_outstanding_cnt--; 953 HTC_PACKET_REMOVE(&pEndpoint->TxLookupQueue, pPacket); 954 htc_packet_set_magic_cookie(pPacket, 0); 955 /* put it back into the callers queue */ 956 HTC_PACKET_ENQUEUE_TO_HEAD(pPktQueue, pPacket); 957 /* reclaim credits */ 958 HTC_PACKET_QUEUE_ITERATE_ALLOW_REMOVE(pPktQueue, 959 pPacket) { 960 pEndpoint->TxCredits += 961 pPacket->PktInfo.AsTx.CreditsUsed; 962 } HTC_PACKET_QUEUE_ITERATE_END; 963 if (!pEndpoint->async_update) { 964 UNLOCK_HTC_TX(target); 965 } 966 break; 967 } 968 if (rt_put) { 969 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, HIF_RTPM_ID_HTT); 970 rt_put = false; 971 } 972 } 973 974 if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) { 975 if (((status == QDF_STATUS_E_RESOURCES) && 976 (pEndpoint->num_requeues_warn > MAX_REQUEUE_WARN)) || 977 (status != QDF_STATUS_E_RESOURCES)) { 978 QDF_TRACE(QDF_MODULE_ID_HIF, QDF_TRACE_LEVEL_INFO, 979 "failed pkt:0x%pK status:%d endpoint:%d", 980 pPacket, status, pEndpoint->Id); 981 } 982 983 } 984 985 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-htc_issue_packets\n")); 986 987 return status; 988 } 989 990 #ifdef FEATURE_RUNTIME_PM 991 /** 992 * extract_htc_pm_packets() - move pm packets from endpoint into queue 993 * @endpoint: which endpoint to extract packets from 994 * @queue: a queue to store extracted packets in. 995 * 996 * remove pm packets from the endpoint's tx queue. 997 * queue them into a queue 998 */ 999 static void extract_htc_pm_packets(HTC_ENDPOINT *endpoint, 1000 HTC_PACKET_QUEUE *queue) 1001 { 1002 HTC_PACKET *packet; 1003 1004 /* only WMI endpoint has power management packets */ 1005 if (endpoint->service_id != WMI_CONTROL_SVC) 1006 return; 1007 1008 ITERATE_OVER_LIST_ALLOW_REMOVE(&endpoint->TxQueue.QueueHead, packet, 1009 HTC_PACKET, ListLink) { 1010 if (packet->PktInfo.AsTx.Tag == HTC_TX_PACKET_TAG_AUTO_PM) { 1011 HTC_PACKET_REMOVE(&endpoint->TxQueue, packet); 1012 HTC_PACKET_ENQUEUE(queue, packet); 1013 } 1014 } ITERATE_END 1015 } 1016 1017 /** 1018 * queue_htc_pm_packets() - queue pm packets with priority 1019 * @endpoint: endpoint to queue packets to 1020 * @queue: queue of pm packets to enqueue 1021 * 1022 * suspend resume packets get special treatment & priority. 1023 * need to queue them at the front of the queue. 1024 */ 1025 static void queue_htc_pm_packets(HTC_ENDPOINT *endpoint, 1026 HTC_PACKET_QUEUE *queue) 1027 { 1028 if (endpoint->service_id != WMI_CONTROL_SVC) 1029 return; 1030 1031 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&endpoint->TxQueue, queue); 1032 } 1033 1034 /** 1035 * htc_dec_wmi_runtime_cnt: Decrement htc wmi runtime count 1036 * @target: HTC target 1037 * @rtpm_code: RTPM code 1038 * 1039 * Return: None 1040 */ 1041 static inline 1042 void htc_dec_wmi_runtime_cnt(HTC_TARGET *target, uint8_t rtpm_code) 1043 { 1044 if (rtpm_code == HIF_RTPM_ID_WMI) 1045 qdf_atomic_dec(&target->htc_wmi_runtime_cnt); 1046 } 1047 1048 /** 1049 * htc_inc_wmi_runtime_cnt: Increment htc wmi runtime count 1050 * @target: HTC target 1051 * @rtpm_code: RTPM code 1052 * 1053 * Return: None 1054 */ 1055 static inline 1056 void htc_inc_wmi_runtime_cnt(HTC_TARGET *target, uint8_t rtpm_code) 1057 { 1058 if (rtpm_code == HIF_RTPM_ID_WMI) 1059 qdf_atomic_inc(&target->htc_wmi_runtime_cnt); 1060 } 1061 #else 1062 static void extract_htc_pm_packets(HTC_ENDPOINT *endpoint, 1063 HTC_PACKET_QUEUE *queue) 1064 {} 1065 1066 static void queue_htc_pm_packets(HTC_ENDPOINT *endpoint, 1067 HTC_PACKET_QUEUE *queue) 1068 {} 1069 1070 static inline 1071 void htc_dec_wmi_runtime_cnt(HTC_TARGET *target, uint8_t rtpm_code) 1072 { 1073 } 1074 1075 static inline 1076 void htc_inc_wmi_runtime_cnt(HTC_TARGET *target, uint8_t rtpm_code) 1077 { 1078 } 1079 #endif 1080 1081 /** 1082 * htc_send_pkts_get_rtpm_id() - get runtime pm dbgid by service_id 1083 * @service_id: service for endpoint 1084 * 1085 * For service_id HTT_DATA_MSG_SVC, HTT message donot have a tx complete 1086 * from CE level, so they need runtime put which only can happen in fw 1087 * response. runtime put will happens at 2 ways. 1088 * 1 if packet tag HTC_TX_PACKET_TAG_RUNTIME_PUT, runtime put 1089 * will be just in htc_issue_packets. as such pkt doesn't have 1090 * a response from fw. 1091 * 2 other pkt must have a response from fw, it will be handled 1092 * by fw response using htc_pm_runtime_put. 1093 * 1094 * For other service_id, they have tx_completion from CE, so they will be 1095 * handled in htc_tx_completion_handler, except packet tag as 1096 * HTC_TX_PACKET_TAG_AUTO_PM, pm related wmi cmd don't need a runtime 1097 * put/get. 1098 * 1099 * 1100 * Return: rtpm id to trace who used it 1101 */ 1102 static unsigned int 1103 htc_send_pkts_get_rtpm_id(HTC_SERVICE_ID service_id) 1104 { 1105 if (service_id == HTT_DATA_MSG_SVC) 1106 return HIF_RTPM_ID_HTT; 1107 else 1108 return HIF_RTPM_ID_WMI; 1109 } 1110 1111 #ifdef SYSTEM_PM_CHECK 1112 /** 1113 * extract_htc_system_resume_pkts() - Move system pm resume packets from 1114 * endpoint into queue 1115 * @endpoint: which endpoint to extract packets from 1116 * @queue: a queue to store extracted packets in. 1117 * 1118 * Remove pm packets from the endpoint's tx queue and enqueue 1119 * them into a queue 1120 */ 1121 static void extract_htc_system_resume_pkts(HTC_ENDPOINT *endpoint, 1122 HTC_PACKET_QUEUE *queue) 1123 { 1124 HTC_PACKET *packet; 1125 1126 /* only WMI endpoint has power management packets */ 1127 if (endpoint->service_id != WMI_CONTROL_SVC) 1128 return; 1129 1130 ITERATE_OVER_LIST_ALLOW_REMOVE(&endpoint->TxQueue.QueueHead, packet, 1131 HTC_PACKET, ListLink) { 1132 if (packet->PktInfo.AsTx.Tag == HTC_TX_PACKET_SYSTEM_RESUME) { 1133 HTC_PACKET_REMOVE(&endpoint->TxQueue, packet); 1134 HTC_PACKET_ENQUEUE(queue, packet); 1135 } 1136 } ITERATE_END 1137 } 1138 #else 1139 static inline 1140 void extract_htc_system_resume_pkts(HTC_ENDPOINT *endpoint, 1141 HTC_PACKET_QUEUE *queue) 1142 { 1143 } 1144 #endif 1145 1146 /** 1147 * get_htc_send_packets_credit_based() - get packets based on available credits 1148 * @target: HTC target on which packets need to be sent 1149 * @pEndpoint: logical endpoint on which packets needs to be sent 1150 * @pQueue: HTC packet queue containing the list of packets to be sent 1151 * 1152 * Get HTC send packets from TX queue on an endpoint based on available credits. 1153 * The function moves the packets from TX queue of the endpoint to pQueue. 1154 * 1155 * Return: None 1156 */ 1157 static void get_htc_send_packets_credit_based(HTC_TARGET *target, 1158 HTC_ENDPOINT *pEndpoint, 1159 HTC_PACKET_QUEUE *pQueue) 1160 { 1161 int creditsRequired; 1162 int remainder; 1163 uint8_t sendFlags; 1164 HTC_PACKET *pPacket; 1165 unsigned int transferLength; 1166 HTC_PACKET_QUEUE *tx_queue; 1167 HTC_PACKET_QUEUE pm_queue; 1168 bool do_pm_get = false; 1169 unsigned int rtpm_code = 0; 1170 int ret; 1171 HTC_PACKET_QUEUE sys_pm_queue; 1172 bool sys_pm_check = false; 1173 1174 /*** NOTE : the TX lock is held when this function is called ***/ 1175 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1176 ("+get_htc_send_packets_credit_based\n")); 1177 1178 INIT_HTC_PACKET_QUEUE(&pm_queue); 1179 extract_htc_pm_packets(pEndpoint, &pm_queue); 1180 if (HTC_QUEUE_EMPTY(&pm_queue)) { 1181 do_pm_get = true; 1182 1183 INIT_HTC_PACKET_QUEUE(&sys_pm_queue); 1184 extract_htc_system_resume_pkts(pEndpoint, &sys_pm_queue); 1185 if (HTC_QUEUE_EMPTY(&sys_pm_queue)) { 1186 tx_queue = &pEndpoint->TxQueue; 1187 sys_pm_check = true; 1188 } else { 1189 tx_queue = &sys_pm_queue; 1190 } 1191 } else { 1192 tx_queue = &pm_queue; 1193 } 1194 1195 /* loop until we can grab as many packets out of the queue as we can */ 1196 while (true) { 1197 if (do_pm_get) { 1198 rtpm_code = htc_send_pkts_get_rtpm_id( 1199 pEndpoint->service_id); 1200 ret = hif_rtpm_get(HIF_RTPM_GET_ASYNC, rtpm_code); 1201 if (ret) { 1202 /* bus suspended, runtime resume issued */ 1203 if (HTC_PACKET_QUEUE_DEPTH(pQueue) > 0) 1204 AR_DEBUG_PRINTF(ATH_DEBUG_WARN, 1205 (" pQueue depth: %d\n", 1206 HTC_PACKET_QUEUE_DEPTH(pQueue))); 1207 1208 pPacket = htc_get_pkt_at_head(tx_queue); 1209 if (!pPacket) 1210 break; 1211 log_packet_info(target, pPacket); 1212 break; 1213 } 1214 htc_inc_wmi_runtime_cnt(target, rtpm_code); 1215 } 1216 1217 sendFlags = 0; 1218 /* get packet at head, but don't remove it */ 1219 pPacket = htc_get_pkt_at_head(tx_queue); 1220 if (!pPacket) { 1221 if (do_pm_get) { 1222 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, rtpm_code); 1223 htc_dec_wmi_runtime_cnt(target, rtpm_code); 1224 } 1225 break; 1226 } 1227 1228 if (sys_pm_check && 1229 hif_system_pm_state_check(target->hif_dev)) { 1230 if (do_pm_get) { 1231 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, rtpm_code); 1232 htc_dec_wmi_runtime_cnt(target, rtpm_code); 1233 } 1234 break; 1235 } 1236 1237 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1238 (" Got head packet:%pK , Queue Depth: %d\n", 1239 pPacket, 1240 HTC_PACKET_QUEUE_DEPTH(tx_queue))); 1241 1242 transferLength = pPacket->ActualLength + HTC_HDR_LENGTH; 1243 1244 if (transferLength <= pEndpoint->TxCreditSize) { 1245 creditsRequired = 1; 1246 } else { 1247 /* figure out how many credits this message requires */ 1248 creditsRequired = 1249 transferLength / pEndpoint->TxCreditSize; 1250 remainder = transferLength % pEndpoint->TxCreditSize; 1251 1252 if (remainder) 1253 creditsRequired++; 1254 } 1255 1256 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1257 (" Credits Required:%d Got:%d\n", 1258 creditsRequired, pEndpoint->TxCredits)); 1259 1260 if (pEndpoint->Id == ENDPOINT_0) { 1261 /* 1262 * endpoint 0 is special, it always has a credit and 1263 * does not require credit based flow control 1264 */ 1265 creditsRequired = 0; 1266 } else { 1267 1268 if (pEndpoint->TxCredits < creditsRequired) { 1269 #if DEBUG_CREDIT 1270 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 1271 ("EP%d,No Credit now.%d < %d\n", 1272 pEndpoint->Id, 1273 pEndpoint->TxCredits, 1274 creditsRequired)); 1275 #endif 1276 if (do_pm_get) { 1277 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, 1278 rtpm_code); 1279 htc_dec_wmi_runtime_cnt(target, 1280 rtpm_code); 1281 } 1282 1283 break; 1284 } 1285 1286 pEndpoint->TxCredits -= creditsRequired; 1287 INC_HTC_EP_STAT(pEndpoint, TxCreditsConsummed, 1288 creditsRequired); 1289 1290 /* check if we need credits back from the target */ 1291 if (pEndpoint->TxCredits <= 1292 pEndpoint->TxCreditsPerMaxMsg) { 1293 /* tell the target we need credits ASAP! */ 1294 sendFlags |= HTC_FLAGS_NEED_CREDIT_UPDATE; 1295 if (pEndpoint->service_id == WMI_CONTROL_SVC) { 1296 htc_credit_record(HTC_REQUEST_CREDIT, 1297 pEndpoint->TxCredits, 1298 HTC_PACKET_QUEUE_DEPTH 1299 (tx_queue)); 1300 hif_latency_detect_credit_record_time( 1301 HIF_REQUEST_CREDIT, 1302 target->hif_dev); 1303 } 1304 INC_HTC_EP_STAT(pEndpoint, 1305 TxCreditLowIndications, 1); 1306 #if DEBUG_CREDIT 1307 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 1308 (" EP%d Needs Credits\n", 1309 pEndpoint->Id)); 1310 #endif 1311 } 1312 } 1313 1314 /* now we can fully dequeue */ 1315 pPacket = htc_packet_dequeue(tx_queue); 1316 if (pPacket) { 1317 /* save the number of credits this packet consumed */ 1318 pPacket->PktInfo.AsTx.CreditsUsed = creditsRequired; 1319 /* save send flags */ 1320 pPacket->PktInfo.AsTx.SendFlags = sendFlags; 1321 1322 /* queue this packet into the caller's queue */ 1323 HTC_PACKET_ENQUEUE(pQueue, pPacket); 1324 } 1325 } 1326 1327 if (!HTC_QUEUE_EMPTY(&pm_queue)) 1328 queue_htc_pm_packets(pEndpoint, &pm_queue); 1329 1330 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1331 ("-get_htc_send_packets_credit_based\n")); 1332 1333 } 1334 1335 static void get_htc_send_packets(HTC_TARGET *target, 1336 HTC_ENDPOINT *pEndpoint, 1337 HTC_PACKET_QUEUE *pQueue, int Resources) 1338 { 1339 1340 HTC_PACKET *pPacket; 1341 HTC_PACKET_QUEUE *tx_queue; 1342 HTC_PACKET_QUEUE pm_queue; 1343 bool do_pm_get = false; 1344 unsigned int rtpm_code = 0; 1345 int ret; 1346 1347 /*** NOTE : the TX lock is held when this function is called ***/ 1348 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1349 ("+get_htc_send_packets %d resources\n", Resources)); 1350 1351 INIT_HTC_PACKET_QUEUE(&pm_queue); 1352 extract_htc_pm_packets(pEndpoint, &pm_queue); 1353 if (HTC_QUEUE_EMPTY(&pm_queue)) { 1354 tx_queue = &pEndpoint->TxQueue; 1355 do_pm_get = true; 1356 } else { 1357 tx_queue = &pm_queue; 1358 } 1359 1360 /* loop until we can grab as many packets out of the queue as we can */ 1361 while (Resources > 0) { 1362 int num_frags; 1363 1364 if (do_pm_get) { 1365 rtpm_code = 1366 htc_send_pkts_get_rtpm_id( 1367 pEndpoint->service_id); 1368 ret = hif_rtpm_get(HIF_RTPM_GET_ASYNC, rtpm_code); 1369 if (ret) { 1370 /* bus suspended, runtime resume issued */ 1371 QDF_ASSERT(HTC_PACKET_QUEUE_DEPTH(pQueue) == 0); 1372 pPacket = htc_get_pkt_at_head(tx_queue); 1373 if (!pPacket) 1374 break; 1375 log_packet_info(target, pPacket); 1376 break; 1377 } 1378 htc_inc_wmi_runtime_cnt(target, rtpm_code); 1379 1380 } 1381 1382 ret = hif_system_pm_state_check(target->hif_dev); 1383 if (ret) { 1384 if (do_pm_get) { 1385 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, rtpm_code); 1386 htc_dec_wmi_runtime_cnt(target, rtpm_code); 1387 } 1388 break; 1389 } 1390 1391 pPacket = htc_packet_dequeue(tx_queue); 1392 if (!pPacket) { 1393 if (do_pm_get) { 1394 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, rtpm_code); 1395 htc_dec_wmi_runtime_cnt(target, rtpm_code); 1396 } 1397 break; 1398 } 1399 1400 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1401 (" Got packet:%pK , New Queue Depth: %d\n", 1402 pPacket, 1403 HTC_PACKET_QUEUE_DEPTH(tx_queue))); 1404 /* For non-credit path the sequence number is already embedded 1405 * in the constructed HTC header 1406 */ 1407 pPacket->PktInfo.AsTx.SendFlags = 0; 1408 pPacket->PktInfo.AsTx.CreditsUsed = 0; 1409 /* queue this packet into the caller's queue */ 1410 HTC_PACKET_ENQUEUE(pQueue, pPacket); 1411 1412 /* 1413 * FIX THIS: 1414 * For now, avoid calling qdf_nbuf_get_num_frags before calling 1415 * qdf_nbuf_map, because the MacOS version of qdf_nbuf_t doesn't 1416 * support qdf_nbuf_get_num_frags until after qdf_nbuf_map has 1417 * been done. 1418 * Assume that the non-data netbufs, i.e. WMI message netbufs, 1419 * consist of a single fragment. 1420 */ 1421 /* WMI messages are in a single-fragment network buf */ 1422 num_frags = 1423 (pPacket->PktInfo.AsTx. 1424 Flags & HTC_TX_PACKET_FLAG_FIXUP_NETBUF) ? 1 : 1425 qdf_nbuf_get_num_frags(GET_HTC_PACKET_NET_BUF_CONTEXT 1426 (pPacket)); 1427 Resources -= num_frags; 1428 } 1429 1430 if (!HTC_QUEUE_EMPTY(&pm_queue)) 1431 queue_htc_pm_packets(pEndpoint, &pm_queue); 1432 1433 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-get_htc_send_packets\n")); 1434 1435 } 1436 1437 /** 1438 * htc_try_send() - Send packets in a queue on an endpoint 1439 * @target: HTC target on which packets need to be sent 1440 * @pEndpoint: logical endpoint on which packets needs to be sent 1441 * @pCallersSendQueue: packet queue containing the list of packets to be sent 1442 * 1443 * Return: enum HTC_SEND_QUEUE_RESULT indicates whether the packet was queued to 1444 * be sent or the packet should be dropped by the upper layer 1445 */ 1446 static enum HTC_SEND_QUEUE_RESULT htc_try_send(HTC_TARGET *target, 1447 HTC_ENDPOINT *pEndpoint, 1448 HTC_PACKET_QUEUE *pCallersSendQueue) 1449 { 1450 /* temp queue to hold packets at various stages */ 1451 HTC_PACKET_QUEUE sendQueue; 1452 HTC_PACKET *pPacket; 1453 int tx_resources; 1454 int overflow; 1455 enum HTC_SEND_QUEUE_RESULT result = HTC_SEND_QUEUE_OK; 1456 QDF_STATUS status; 1457 1458 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+htc_try_send (Queue:%pK Depth:%d)\n", 1459 pCallersSendQueue, 1460 (pCallersSendQueue == 1461 NULL) ? 0 : 1462 HTC_PACKET_QUEUE_DEPTH 1463 (pCallersSendQueue))); 1464 1465 /* init the local send queue */ 1466 INIT_HTC_PACKET_QUEUE(&sendQueue); 1467 1468 do { 1469 1470 /* caller didn't provide a queue, just wants us to check 1471 * queues and send 1472 */ 1473 if (!pCallersSendQueue) 1474 break; 1475 1476 if (HTC_QUEUE_EMPTY(pCallersSendQueue)) { 1477 /* empty queue */ 1478 OL_ATH_HTC_PKT_ERROR_COUNT_INCR(target, 1479 HTC_PKT_Q_EMPTY); 1480 result = HTC_SEND_QUEUE_DROP; 1481 break; 1482 } 1483 1484 if (HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue) >= 1485 pEndpoint->MaxTxQueueDepth) { 1486 /* we've already overflowed */ 1487 overflow = HTC_PACKET_QUEUE_DEPTH(pCallersSendQueue); 1488 } else { 1489 /* figure out how much we will overflow by */ 1490 overflow = HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue); 1491 overflow += HTC_PACKET_QUEUE_DEPTH(pCallersSendQueue); 1492 /* get how much we will overflow the TX queue by */ 1493 overflow -= pEndpoint->MaxTxQueueDepth; 1494 } 1495 1496 /* if overflow is negative or zero, we are okay */ 1497 if (overflow > 0) { 1498 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1499 ("Endpoint %d, TX queue will overflow :%d , Tx Depth:%d, Max:%d\n", 1500 pEndpoint->Id, overflow, 1501 HTC_PACKET_QUEUE_DEPTH(&pEndpoint-> 1502 TxQueue), 1503 pEndpoint->MaxTxQueueDepth)); 1504 } 1505 if ((overflow <= 0) 1506 || (!pEndpoint->EpCallBacks.EpSendFull)) { 1507 /* all packets will fit or caller did not provide send 1508 * full indication handler 1509 * just move all of them to local sendQueue object 1510 */ 1511 HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&sendQueue, 1512 pCallersSendQueue); 1513 } else { 1514 int i; 1515 int goodPkts = 1516 HTC_PACKET_QUEUE_DEPTH(pCallersSendQueue) - 1517 overflow; 1518 1519 A_ASSERT(goodPkts >= 0); 1520 /* we have overflowed and callback is provided. Dequeue 1521 * all non-overflow packets into the sendqueue 1522 */ 1523 for (i = 0; i < goodPkts; i++) { 1524 /* pop off caller's queue */ 1525 pPacket = htc_packet_dequeue(pCallersSendQueue); 1526 A_ASSERT(pPacket); 1527 if (pPacket) 1528 /* insert into local queue */ 1529 HTC_PACKET_ENQUEUE(&sendQueue, 1530 pPacket); 1531 } 1532 1533 /* the caller's queue has all the packets that won't fit 1534 * walk through the caller's queue and indicate each one 1535 * to the send full handler 1536 */ 1537 ITERATE_OVER_LIST_ALLOW_REMOVE(&pCallersSendQueue-> 1538 QueueHead, pPacket, 1539 HTC_PACKET, ListLink) { 1540 1541 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1542 ("Indicating overflowed TX packet: %pK\n", 1543 pPacket)); 1544 /* 1545 * Remove headroom reserved for HTC_FRAME_HDR 1546 * before giving the packet back to the user via 1547 * the EpSendFull callback. 1548 */ 1549 qdf_nbuf_pull_head 1550 (GET_HTC_PACKET_NET_BUF_CONTEXT 1551 (pPacket), 1552 sizeof(HTC_FRAME_HDR)); 1553 pPacket->PktInfo.AsTx.Flags &= 1554 ~HTC_TX_PACKET_FLAG_HTC_HEADER_IN_NETBUF_DATA; 1555 1556 if (pEndpoint->EpCallBacks. 1557 EpSendFull(pEndpoint->EpCallBacks.pContext, 1558 pPacket) == HTC_SEND_FULL_DROP) { 1559 /* callback wants the packet dropped */ 1560 INC_HTC_EP_STAT(pEndpoint, TxDropped, 1561 1); 1562 /* leave this one in the caller's queue 1563 * for cleanup 1564 */ 1565 } else { 1566 /* callback wants to keep this packet, 1567 * remove from caller's queue 1568 */ 1569 HTC_PACKET_REMOVE(pCallersSendQueue, 1570 pPacket); 1571 /* put it in the send queue 1572 * add HTC_FRAME_HDR space reservation 1573 * again 1574 */ 1575 qdf_nbuf_push_head 1576 (GET_HTC_PACKET_NET_BUF_CONTEXT 1577 (pPacket), 1578 sizeof(HTC_FRAME_HDR)); 1579 pPacket->PktInfo.AsTx.Flags |= 1580 HTC_TX_PACKET_FLAG_HTC_HEADER_IN_NETBUF_DATA; 1581 1582 HTC_PACKET_ENQUEUE(&sendQueue, pPacket); 1583 } 1584 1585 } 1586 ITERATE_END; 1587 1588 if (HTC_QUEUE_EMPTY(&sendQueue)) { 1589 /* no packets made it in, caller will cleanup */ 1590 OL_ATH_HTC_PKT_ERROR_COUNT_INCR(target, 1591 HTC_SEND_Q_EMPTY); 1592 result = HTC_SEND_QUEUE_DROP; 1593 break; 1594 } 1595 } 1596 1597 } while (false); 1598 1599 if (result != HTC_SEND_QUEUE_OK) { 1600 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-htc_try_send: %d\n", 1601 result)); 1602 return result; 1603 } 1604 1605 LOCK_HTC_TX(target); 1606 1607 if (!HTC_QUEUE_EMPTY(&sendQueue)) { 1608 if (target->is_nodrop_pkt) { 1609 /* 1610 * nodrop pkts have higher priority than normal pkts, 1611 * insert nodrop pkt to head for proper 1612 * start/termination of test. 1613 */ 1614 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxQueue, 1615 &sendQueue); 1616 target->is_nodrop_pkt = false; 1617 } else { 1618 /* transfer packets to tail */ 1619 HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&pEndpoint->TxQueue, 1620 &sendQueue); 1621 A_ASSERT(HTC_QUEUE_EMPTY(&sendQueue)); 1622 INIT_HTC_PACKET_QUEUE(&sendQueue); 1623 } 1624 } 1625 1626 /* increment tx processing count on entry */ 1627 if (qdf_atomic_inc_return(&pEndpoint->TxProcessCount) > 1) { 1628 /* another thread or task is draining the TX queues on this 1629 * endpoint that thread will reset the tx processing count when 1630 * the queue is drained 1631 */ 1632 qdf_atomic_dec(&pEndpoint->TxProcessCount); 1633 UNLOCK_HTC_TX(target); 1634 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-htc_try_send (busy)\n")); 1635 return HTC_SEND_QUEUE_OK; 1636 } 1637 1638 /***** beyond this point only 1 thread may enter ******/ 1639 1640 /* now drain the endpoint TX queue for transmission as long as we have 1641 * enough transmit resources 1642 */ 1643 if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 1644 tx_resources = 1645 hif_get_free_queue_number(target->hif_dev, 1646 pEndpoint->UL_PipeID); 1647 } else { 1648 tx_resources = 0; 1649 } 1650 1651 while (true) { 1652 1653 if (HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue) == 0) 1654 break; 1655 1656 if (pEndpoint->async_update && 1657 (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) && 1658 (!tx_resources)) { 1659 hif_schedule_ce_tasklet(target->hif_dev, 1660 pEndpoint->UL_PipeID); 1661 break; 1662 } 1663 1664 if (IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 1665 #if DEBUG_CREDIT 1666 int cred = pEndpoint->TxCredits; 1667 #endif 1668 /* credit based mechanism provides flow control based on 1669 * target transmit resource availability, we assume that 1670 * the HIF layer will always have bus resources greater 1671 * than target transmit resources 1672 */ 1673 get_htc_send_packets_credit_based(target, pEndpoint, 1674 &sendQueue); 1675 #if DEBUG_CREDIT 1676 if (ep_debug_mask & (1 << pEndpoint->Id)) { 1677 if (cred - pEndpoint->TxCredits > 0) { 1678 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 1679 (" <HTC> Decrease EP%d %d - %d = %d credits.\n", 1680 pEndpoint->Id, cred, 1681 cred - 1682 pEndpoint->TxCredits, 1683 pEndpoint->TxCredits)); 1684 } 1685 } 1686 #endif 1687 } else { 1688 1689 /* 1690 * Header and payload belongs to the different fragments and 1691 * consume 2 resource for one HTC package but USB combine into 1692 * one transfer.And one WMI message only consumes one single 1693 * resource. 1694 */ 1695 if (HTC_TX_BUNDLE_ENABLED(target) && tx_resources && 1696 hif_get_bus_type(target->hif_dev) == 1697 QDF_BUS_TYPE_USB) { 1698 if (pEndpoint->service_id == 1699 WMI_CONTROL_SVC) 1700 tx_resources = 1701 HTC_MAX_MSG_PER_BUNDLE_TX; 1702 else 1703 tx_resources = 1704 (HTC_MAX_MSG_PER_BUNDLE_TX * 2); 1705 } 1706 /* get all the packets for this endpoint that we can for 1707 * this pass 1708 */ 1709 get_htc_send_packets(target, pEndpoint, &sendQueue, 1710 tx_resources); 1711 } 1712 1713 if (HTC_PACKET_QUEUE_DEPTH(&sendQueue) == 0) { 1714 /* didn't get any packets due to a lack of resources or 1715 * TX queue was drained 1716 */ 1717 break; 1718 } 1719 1720 if (!pEndpoint->async_update) 1721 UNLOCK_HTC_TX(target); 1722 1723 /* send what we can */ 1724 status = htc_issue_packets(target, pEndpoint, &sendQueue); 1725 if (status) { 1726 int i; 1727 unsigned int rtpm_code; 1728 1729 result = HTC_SEND_QUEUE_DROP; 1730 1731 switch (status) { 1732 case QDF_STATUS_E_RESOURCES: 1733 if (pEndpoint->num_requeues_warn <= MAX_REQUEUE_WARN) { 1734 pEndpoint->num_requeues_warn++; 1735 pEndpoint->total_num_requeues++; 1736 break; 1737 } else { 1738 pEndpoint->total_num_requeues++; 1739 pEndpoint->num_requeues_warn = 0; 1740 } 1741 fallthrough; 1742 default: 1743 QDF_TRACE(QDF_MODULE_ID_HIF, QDF_TRACE_LEVEL_INFO, 1744 "htc_issue_packets, failed status:%d" 1745 "endpoint:%d, put it back to head of" 1746 "callersSendQueue", result, pEndpoint->Id); 1747 break; 1748 } 1749 1750 rtpm_code = htc_send_pkts_get_rtpm_id( 1751 pEndpoint->service_id); 1752 for (i = HTC_PACKET_QUEUE_DEPTH(&sendQueue); i > 0; i--) { 1753 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, rtpm_code); 1754 htc_dec_wmi_runtime_cnt(target, rtpm_code); 1755 } 1756 1757 if (!pEndpoint->async_update) { 1758 LOCK_HTC_TX(target); 1759 } 1760 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxQueue, 1761 &sendQueue); 1762 break; 1763 } else { 1764 if (pEndpoint->num_requeues_warn) 1765 pEndpoint->num_requeues_warn = 0; 1766 } 1767 1768 if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 1769 tx_resources = 1770 hif_get_free_queue_number(target->hif_dev, 1771 pEndpoint->UL_PipeID); 1772 } 1773 1774 if (!pEndpoint->async_update) { 1775 LOCK_HTC_TX(target); 1776 } 1777 1778 } 1779 1780 /* done with this endpoint, we can clear the count */ 1781 qdf_atomic_init(&pEndpoint->TxProcessCount); 1782 1783 UNLOCK_HTC_TX(target); 1784 1785 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-htc_try_send:\n")); 1786 1787 return HTC_SEND_QUEUE_OK; 1788 } 1789 1790 #ifdef USB_HIF_SINGLE_PIPE_DATA_SCHED 1791 static uint16_t htc_send_pkts_sched_check(HTC_HANDLE HTCHandle, 1792 HTC_ENDPOINT_ID id) 1793 { 1794 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 1795 HTC_ENDPOINT *pEndpoint; 1796 HTC_ENDPOINT_ID eid; 1797 HTC_PACKET_QUEUE *pTxQueue; 1798 uint16_t resources; 1799 uint16_t acQueueStatus[DATA_EP_SIZE] = { 0, 0, 0, 0 }; 1800 1801 if (id < ENDPOINT_2 || id > ENDPOINT_5) 1802 return 1; 1803 1804 for (eid = ENDPOINT_2; eid <= ENDPOINT_5; eid++) { 1805 pEndpoint = &target->endpoint[eid]; 1806 pTxQueue = &pEndpoint->TxQueue; 1807 1808 if (HTC_QUEUE_EMPTY(pTxQueue)) 1809 acQueueStatus[eid - 2] = 1; 1810 } 1811 1812 switch (id) { 1813 case ENDPOINT_2: /* BE */ 1814 return acQueueStatus[0] && acQueueStatus[2] 1815 && acQueueStatus[3]; 1816 case ENDPOINT_3: /* BK */ 1817 return acQueueStatus[0] && acQueueStatus[1] && acQueueStatus[2] 1818 && acQueueStatus[3]; 1819 case ENDPOINT_4: /* VI */ 1820 return acQueueStatus[2] && acQueueStatus[3]; 1821 case ENDPOINT_5: /* VO */ 1822 return acQueueStatus[3]; 1823 default: 1824 return 0; 1825 } 1826 1827 } 1828 1829 static A_STATUS htc_send_pkts_sched_queue(HTC_TARGET *target, 1830 HTC_PACKET_QUEUE *pPktQueue, 1831 HTC_ENDPOINT_ID eid) 1832 { 1833 HTC_ENDPOINT *pEndpoint; 1834 HTC_PACKET_QUEUE *pTxQueue; 1835 HTC_PACKET *pPacket; 1836 int goodPkts; 1837 1838 pEndpoint = &target->endpoint[eid]; 1839 pTxQueue = &pEndpoint->TxQueue; 1840 1841 LOCK_HTC_TX(target); 1842 1843 goodPkts = 1844 pEndpoint->MaxTxQueueDepth - 1845 HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue); 1846 1847 if (goodPkts > 0) { 1848 while (!HTC_QUEUE_EMPTY(pPktQueue)) { 1849 pPacket = htc_packet_dequeue(pPktQueue); 1850 HTC_PACKET_ENQUEUE(pTxQueue, pPacket); 1851 goodPkts--; 1852 1853 if (goodPkts <= 0) 1854 break; 1855 } 1856 } 1857 1858 if (HTC_PACKET_QUEUE_DEPTH(pPktQueue)) { 1859 ITERATE_OVER_LIST_ALLOW_REMOVE(&pPktQueue->QueueHead, pPacket, 1860 HTC_PACKET, ListLink) { 1861 1862 if (pEndpoint->EpCallBacks. 1863 EpSendFull(pEndpoint->EpCallBacks.pContext, 1864 pPacket) == HTC_SEND_FULL_DROP) { 1865 INC_HTC_EP_STAT(pEndpoint, TxDropped, 1); 1866 } else { 1867 HTC_PACKET_REMOVE(pPktQueue, pPacket); 1868 HTC_PACKET_ENQUEUE(pTxQueue, pPacket); 1869 } 1870 } 1871 ITERATE_END; 1872 } 1873 1874 UNLOCK_HTC_TX(target); 1875 1876 return A_OK; 1877 } 1878 1879 #endif 1880 1881 static inline QDF_STATUS __htc_send_pkt(HTC_HANDLE HTCHandle, 1882 HTC_PACKET *pPacket) 1883 { 1884 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 1885 HTC_ENDPOINT *pEndpoint; 1886 HTC_PACKET_QUEUE pPktQueue; 1887 qdf_nbuf_t netbuf; 1888 HTC_FRAME_HDR *htc_hdr; 1889 QDF_STATUS status; 1890 1891 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1892 ("+__htc_send_pkt\n")); 1893 1894 /* get packet at head to figure out which endpoint these packets will 1895 * go into 1896 */ 1897 if (!pPacket) { 1898 OL_ATH_HTC_PKT_ERROR_COUNT_INCR(target, GET_HTC_PKT_Q_FAIL); 1899 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-__htc_send_pkt\n")); 1900 return QDF_STATUS_E_INVAL; 1901 } 1902 1903 if ((pPacket->Endpoint >= ENDPOINT_MAX) || 1904 (pPacket->Endpoint <= ENDPOINT_UNUSED)) { 1905 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 1906 ("%s endpoint is invalid\n", __func__)); 1907 AR_DEBUG_ASSERT(0); 1908 return QDF_STATUS_E_INVAL; 1909 } 1910 pEndpoint = &target->endpoint[pPacket->Endpoint]; 1911 1912 if (!pEndpoint->service_id) { 1913 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s service_id is invalid\n", 1914 __func__)); 1915 return QDF_STATUS_E_INVAL; 1916 } 1917 1918 #ifdef HTC_EP_STAT_PROFILING 1919 LOCK_HTC_TX(target); 1920 INC_HTC_EP_STAT(pEndpoint, TxPosted, 1); 1921 UNLOCK_HTC_TX(target); 1922 #endif 1923 1924 /* provide room in each packet's netbuf for the HTC frame header */ 1925 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 1926 AR_DEBUG_ASSERT(netbuf); 1927 if (!netbuf) 1928 return QDF_STATUS_E_INVAL; 1929 1930 qdf_nbuf_push_head(netbuf, sizeof(HTC_FRAME_HDR)); 1931 pPacket->PktInfo.AsTx.Flags |= 1932 HTC_TX_PACKET_FLAG_HTC_HEADER_IN_NETBUF_DATA; 1933 /* setup HTC frame header */ 1934 htc_hdr = (HTC_FRAME_HDR *)qdf_nbuf_get_frag_vaddr(netbuf, 0); 1935 AR_DEBUG_ASSERT(htc_hdr); 1936 if (!htc_hdr) 1937 return QDF_STATUS_E_INVAL; 1938 1939 HTC_WRITE32(htc_hdr, 1940 SM(pPacket->ActualLength, 1941 HTC_FRAME_HDR_PAYLOADLEN) | 1942 SM(pPacket->Endpoint, 1943 HTC_FRAME_HDR_ENDPOINTID)); 1944 LOCK_HTC_TX(target); 1945 1946 pPacket->PktInfo.AsTx.SeqNo = pEndpoint->SeqNo; 1947 pEndpoint->SeqNo++; 1948 1949 HTC_WRITE32(((uint32_t *)htc_hdr) + 1, 1950 SM(pPacket->PktInfo.AsTx.SeqNo, 1951 HTC_FRAME_HDR_CONTROLBYTES1)); 1952 1953 UNLOCK_HTC_TX(target); 1954 1955 /* 1956 * For flow control enabled endpoints mapping is done in 1957 * htc_issue_packets and for non flow control enabled endpoints 1958 * its done here. 1959 */ 1960 if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 1961 pPacket->PktInfo.AsTx.Flags |= HTC_TX_PACKET_FLAG_FIXUP_NETBUF; 1962 status = qdf_nbuf_map(target->osdev, 1963 GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket), 1964 QDF_DMA_TO_DEVICE); 1965 if (status == QDF_STATUS_SUCCESS) { 1966 target->nbuf_nfc_map_count++; 1967 } else { 1968 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 1969 ("%s: nbuf map failed, endpoint %pK, seq_no. %d\n", 1970 __func__, pEndpoint, pEndpoint->SeqNo)); 1971 return status; 1972 } 1973 } 1974 1975 INIT_HTC_PACKET_QUEUE_AND_ADD(&pPktQueue, pPacket); 1976 #ifdef USB_HIF_SINGLE_PIPE_DATA_SCHED 1977 if (!htc_send_pkts_sched_check(HTCHandle, pEndpoint->Id)) 1978 htc_send_pkts_sched_queue(HTCHandle, &pPktQueue, pEndpoint->Id); 1979 else 1980 htc_try_send(target, pEndpoint, &pPktQueue); 1981 #else 1982 htc_try_send(target, pEndpoint, &pPktQueue); 1983 #endif 1984 1985 /* do completion on any packets that couldn't get in */ 1986 while (!HTC_QUEUE_EMPTY(&pPktQueue)) { 1987 pPacket = htc_packet_dequeue(&pPktQueue); 1988 1989 if (HTC_STOPPING(target)) 1990 pPacket->Status = QDF_STATUS_E_CANCELED; 1991 else 1992 pPacket->Status = QDF_STATUS_E_RESOURCES; 1993 1994 send_packet_completion(target, pPacket); 1995 } 1996 1997 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-__htc_send_pkt\n")); 1998 1999 return QDF_STATUS_SUCCESS; 2000 } 2001 2002 #ifdef CUSTOM_CB_SCHEDULER_SUPPORT 2003 /** 2004 * htc_get_endpoint_ul_pipeid() - Helper API to get uplink pipe ID 2005 * @htc_handle: HTC handle 2006 * @endpoint_id: Endpoint ID 2007 * @ul_pipeid: Pointer to uplink pipe ID 2008 * 2009 * return: QDF_STATUS 2010 */ 2011 static QDF_STATUS 2012 htc_get_endpoint_ul_pipeid(HTC_HANDLE htc_handle, HTC_ENDPOINT_ID endpoint_id, 2013 uint8_t *ul_pipeid) 2014 { 2015 HTC_TARGET *target; 2016 HTC_ENDPOINT *end_point; 2017 2018 if (!htc_handle) { 2019 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2020 ("%s: HTCHandle is NULL\n", __func__)); 2021 return QDF_STATUS_E_NULL_VALUE; 2022 } 2023 target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 2024 2025 if (endpoint_id >= ENDPOINT_MAX || endpoint_id <= ENDPOINT_UNUSED) { 2026 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 2027 ("%s endpoint is invalid\n", __func__)); 2028 AR_DEBUG_ASSERT(0); 2029 return QDF_STATUS_E_INVAL; 2030 } 2031 end_point = &target->endpoint[endpoint_id]; 2032 2033 if (!end_point->service_id) { 2034 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s service_id is invalid\n", 2035 __func__)); 2036 return QDF_STATUS_E_INVAL; 2037 } 2038 2039 *ul_pipeid = end_point->UL_PipeID; 2040 2041 return QDF_STATUS_SUCCESS; 2042 } 2043 2044 QDF_STATUS 2045 htc_register_custom_cb(HTC_HANDLE htc_handle, HTC_ENDPOINT_ID endpoint_id, 2046 void (*custom_cb)(void *), void *custom_cb_context) 2047 { 2048 QDF_STATUS status = QDF_STATUS_SUCCESS; 2049 uint8_t ul_pipeid; 2050 2051 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+%s\n", __func__)); 2052 2053 status = htc_get_endpoint_ul_pipeid(htc_handle, endpoint_id, 2054 &ul_pipeid); 2055 if (QDF_IS_STATUS_ERROR(status)) { 2056 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to get ul pipeid\n", 2057 __func__)); 2058 goto exit; 2059 } 2060 2061 status = hif_register_ce_custom_cb(htc_get_hif_device(htc_handle), 2062 ul_pipeid, custom_cb, 2063 custom_cb_context); 2064 if (QDF_IS_STATUS_ERROR(status)) { 2065 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to register cb\n", 2066 __func__)); 2067 goto exit; 2068 } 2069 2070 exit: 2071 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-%s\n", __func__)); 2072 2073 return status; 2074 } 2075 2076 QDF_STATUS 2077 htc_unregister_custom_cb(HTC_HANDLE htc_handle, HTC_ENDPOINT_ID endpoint_id) 2078 { 2079 QDF_STATUS status = QDF_STATUS_SUCCESS; 2080 uint8_t ul_pipeid; 2081 2082 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+%s\n", __func__)); 2083 2084 status = htc_get_endpoint_ul_pipeid(htc_handle, endpoint_id, 2085 &ul_pipeid); 2086 if (QDF_IS_STATUS_ERROR(status)) { 2087 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to get ul pipeid\n", 2088 __func__)); 2089 goto exit; 2090 } 2091 2092 status = hif_unregister_ce_custom_cb(htc_get_hif_device(htc_handle), 2093 ul_pipeid); 2094 if (QDF_IS_STATUS_ERROR(status)) { 2095 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to unregister cb\n", 2096 __func__)); 2097 status = QDF_STATUS_E_INVAL; 2098 goto exit; 2099 } 2100 2101 exit: 2102 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-%s\n", __func__)); 2103 2104 return status; 2105 } 2106 2107 QDF_STATUS 2108 htc_enable_custom_cb(HTC_HANDLE htc_handle, HTC_ENDPOINT_ID endpoint_id) 2109 { 2110 QDF_STATUS status = QDF_STATUS_SUCCESS; 2111 uint8_t ul_pipeid; 2112 2113 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+%s\n", __func__)); 2114 2115 status = htc_get_endpoint_ul_pipeid(htc_handle, endpoint_id, 2116 &ul_pipeid); 2117 if (QDF_IS_STATUS_ERROR(status)) { 2118 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to get ul pipeid\n", 2119 __func__)); 2120 goto exit; 2121 } 2122 2123 status = hif_enable_ce_custom_cb(htc_get_hif_device(htc_handle), 2124 ul_pipeid); 2125 if (QDF_IS_STATUS_ERROR(status)) { 2126 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to enable cb\n", 2127 __func__)); 2128 status = QDF_STATUS_E_INVAL; 2129 goto exit; 2130 } 2131 2132 exit: 2133 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-%s\n", __func__)); 2134 2135 return status; 2136 } 2137 2138 QDF_STATUS 2139 htc_disable_custom_cb(HTC_HANDLE htc_handle, HTC_ENDPOINT_ID endpoint_id) 2140 { 2141 QDF_STATUS status = QDF_STATUS_SUCCESS; 2142 uint8_t ul_pipeid; 2143 2144 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("+%s\n", __func__)); 2145 2146 status = htc_get_endpoint_ul_pipeid(htc_handle, endpoint_id, 2147 &ul_pipeid); 2148 if (QDF_IS_STATUS_ERROR(status)) { 2149 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to get ul pipeid\n", 2150 __func__)); 2151 goto exit; 2152 } 2153 2154 status = hif_disable_ce_custom_cb(htc_get_hif_device(htc_handle), 2155 ul_pipeid); 2156 if (QDF_IS_STATUS_ERROR(status)) { 2157 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("%s Failed to disable cb\n", 2158 __func__)); 2159 status = QDF_STATUS_E_INVAL; 2160 goto exit; 2161 } 2162 2163 exit: 2164 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-%s\n", __func__)); 2165 2166 return status; 2167 } 2168 #endif /* CUSTOM_CB_SCHEDULER_SUPPORT */ 2169 2170 /* HTC API - htc_send_pkt */ 2171 QDF_STATUS htc_send_pkt(HTC_HANDLE htc_handle, HTC_PACKET *htc_packet) 2172 { 2173 if (!htc_handle) { 2174 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2175 ("%s: HTCHandle is NULL \n", __func__)); 2176 return QDF_STATUS_E_FAILURE; 2177 } 2178 2179 if (!htc_packet) { 2180 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2181 ("%s: pPacket is NULL \n", __func__)); 2182 return QDF_STATUS_E_FAILURE; 2183 } 2184 2185 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 2186 ("+-htc_send_pkt: Enter endPointId: %d, buffer: %pK, length: %d\n", 2187 htc_packet->Endpoint, htc_packet->pBuffer, 2188 htc_packet->ActualLength)); 2189 return __htc_send_pkt(htc_handle, htc_packet); 2190 } 2191 qdf_export_symbol(htc_send_pkt); 2192 2193 #ifdef ATH_11AC_TXCOMPACT 2194 /** 2195 * htc_send_data_pkt() - send single data packet on an endpoint 2196 * @htc_hdl: pointer to HTC handle 2197 * @netbuf: network buffer containing the data to be sent 2198 * @ep_id: endpoint identifier 2199 * @actual_length: length of data that needs to be transmitted 2200 * 2201 * Return: QDF_STATUS_SUCCESS for success or an appropriate QDF_STATUS error 2202 */ 2203 QDF_STATUS htc_send_data_pkt(HTC_HANDLE htc_hdl, qdf_nbuf_t netbuf, int ep_id, 2204 int actual_length) 2205 { 2206 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_hdl); 2207 HTC_ENDPOINT *pEndpoint; 2208 HTC_FRAME_HDR *p_htc_hdr; 2209 QDF_STATUS status = QDF_STATUS_SUCCESS; 2210 int tx_resources; 2211 uint32_t data_attr = 0; 2212 int htc_payload_len = actual_length; 2213 unsigned int rtpm_code; 2214 2215 pEndpoint = &target->endpoint[ep_id]; 2216 2217 tx_resources = hif_get_free_queue_number(target->hif_dev, 2218 pEndpoint->UL_PipeID); 2219 2220 if (tx_resources < HTC_DATA_RESOURCE_THRS) { 2221 if (pEndpoint->ul_is_polled) { 2222 hif_send_complete_check(pEndpoint->target->hif_dev, 2223 pEndpoint->UL_PipeID, 1); 2224 tx_resources = 2225 hif_get_free_queue_number(target->hif_dev, 2226 pEndpoint->UL_PipeID); 2227 } 2228 if (tx_resources < HTC_DATA_MINDESC_PERPACKET) 2229 return QDF_STATUS_E_FAILURE; 2230 } 2231 2232 rtpm_code = htc_send_pkts_get_rtpm_id( 2233 pEndpoint->service_id); 2234 if (hif_rtpm_get(HIF_RTPM_GET_ASYNC, rtpm_code)) 2235 return QDF_STATUS_E_FAILURE; 2236 2237 p_htc_hdr = (HTC_FRAME_HDR *)qdf_nbuf_get_frag_vaddr(netbuf, 0); 2238 AR_DEBUG_ASSERT(p_htc_hdr); 2239 2240 data_attr = qdf_nbuf_data_attr_get(netbuf); 2241 2242 if (target->htc_hdr_length_check) 2243 htc_payload_len = actual_length - HTC_HEADER_LEN; 2244 2245 HTC_WRITE32(p_htc_hdr, SM(htc_payload_len, HTC_FRAME_HDR_PAYLOADLEN) 2246 | SM(ep_id, HTC_FRAME_HDR_ENDPOINTID)); 2247 /* 2248 * If the HIF pipe for the data endpoint is polled rather than 2249 * interrupt-driven, this is a good point to check whether any 2250 * data previously sent through the HIF pipe have finished being 2251 * sent. 2252 * Since this may result in callbacks to htc_tx_completion_handler, 2253 * which can take the HTC tx lock, make the hif_send_complete_check 2254 * call before acquiring the HTC tx lock. 2255 * Call hif_send_complete_check directly, rather than calling 2256 * htc_send_complete_check, and call the PollTimerStart separately 2257 * after calling hif_send_head, so the timer will be started to 2258 * check for completion of the new outstanding download (in the 2259 * unexpected event that other polling calls don't catch it). 2260 */ 2261 2262 LOCK_HTC_TX(target); 2263 2264 HTC_WRITE32(((uint32_t *)p_htc_hdr) + 1, 2265 SM(pEndpoint->SeqNo, HTC_FRAME_HDR_CONTROLBYTES1)); 2266 2267 pEndpoint->SeqNo++; 2268 2269 QDF_NBUF_UPDATE_TX_PKT_COUNT(netbuf, QDF_NBUF_TX_PKT_HTC); 2270 DPTRACE(qdf_dp_trace(netbuf, QDF_DP_TRACE_HTC_PACKET_PTR_RECORD, 2271 QDF_TRACE_DEFAULT_PDEV_ID, qdf_nbuf_data_addr(netbuf), 2272 sizeof(qdf_nbuf_data(netbuf)), QDF_TX)); 2273 status = hif_send_head(target->hif_dev, 2274 pEndpoint->UL_PipeID, 2275 pEndpoint->Id, actual_length, netbuf, data_attr); 2276 2277 UNLOCK_HTC_TX(target); 2278 return status; 2279 } 2280 #else /*ATH_11AC_TXCOMPACT */ 2281 2282 /** 2283 * htc_send_data_pkt() - htc_send_data_pkt 2284 * @HTCHandle: pointer to HTC handle 2285 * @pPacket: pointer to HTC_PACKET 2286 * @more_data: indicates whether more data is to follow 2287 * 2288 * Return: QDF_STATUS_SUCCESS for success or an appropriate QDF_STATUS error 2289 */ 2290 QDF_STATUS htc_send_data_pkt(HTC_HANDLE HTCHandle, HTC_PACKET *pPacket, 2291 uint8_t more_data) 2292 { 2293 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 2294 HTC_ENDPOINT *pEndpoint; 2295 HTC_FRAME_HDR *pHtcHdr; 2296 HTC_PACKET_QUEUE sendQueue; 2297 qdf_nbuf_t netbuf = NULL; 2298 int tx_resources; 2299 QDF_STATUS status = QDF_STATUS_SUCCESS; 2300 uint32_t data_attr = 0; 2301 bool used_extra_tx_credit = false; 2302 2303 if (pPacket) { 2304 if ((pPacket->Endpoint >= ENDPOINT_MAX) || 2305 (pPacket->Endpoint <= ENDPOINT_UNUSED)) { 2306 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 2307 ("%s endpoint is invalid\n", __func__)); 2308 AR_DEBUG_ASSERT(0); 2309 return QDF_STATUS_E_INVAL; 2310 } 2311 pEndpoint = &target->endpoint[pPacket->Endpoint]; 2312 2313 /* add HTC_FRAME_HDR in the initial fragment */ 2314 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 2315 pHtcHdr = (HTC_FRAME_HDR *) qdf_nbuf_get_frag_vaddr(netbuf, 0); 2316 AR_DEBUG_ASSERT(pHtcHdr); 2317 2318 HTC_WRITE32(pHtcHdr, 2319 SM(pPacket->ActualLength, 2320 HTC_FRAME_HDR_PAYLOADLEN) | 2321 SM(pPacket->PktInfo.AsTx.SendFlags, 2322 HTC_FRAME_HDR_FLAGS) | 2323 SM(pPacket->Endpoint, 2324 HTC_FRAME_HDR_ENDPOINTID)); 2325 /* 2326 * If the HIF pipe for the data endpoint is polled rather than 2327 * interrupt-driven, this is a good point to check whether any 2328 * data previously sent through the HIF pipe have finished being 2329 * sent. Since this may result in callbacks to 2330 * htc_tx_completion_handler, which can take the HTC tx lock, 2331 * make the hif_send_complete_check call before acquiring the 2332 * HTC tx lock. 2333 * Call hif_send_complete_check directly, rather than calling 2334 * htc_send_complete_check, and call the PollTimerStart 2335 * separately after calling hif_send_head, so the timer will be 2336 * started to check for completion of the new outstanding 2337 * download (in the unexpected event that other polling calls 2338 * don't catch it). 2339 */ 2340 if (pEndpoint->ul_is_polled) { 2341 htc_send_complete_poll_timer_stop(pEndpoint); 2342 hif_send_complete_check(pEndpoint->target->hif_dev, 2343 pEndpoint->UL_PipeID, 0); 2344 } 2345 2346 LOCK_HTC_TX(target); 2347 2348 pPacket->PktInfo.AsTx.SeqNo = pEndpoint->SeqNo; 2349 pEndpoint->SeqNo++; 2350 2351 HTC_WRITE32(((uint32_t *) pHtcHdr) + 1, 2352 SM(pPacket->PktInfo.AsTx.SeqNo, 2353 HTC_FRAME_HDR_CONTROLBYTES1)); 2354 2355 /* append new packet to pEndpoint->TxQueue */ 2356 HTC_PACKET_ENQUEUE(&pEndpoint->TxQueue, pPacket); 2357 if (HTC_TX_BUNDLE_ENABLED(target) && (more_data)) { 2358 UNLOCK_HTC_TX(target); 2359 return QDF_STATUS_SUCCESS; 2360 } 2361 2362 QDF_NBUF_UPDATE_TX_PKT_COUNT(netbuf, QDF_NBUF_TX_PKT_HTC); 2363 DPTRACE(qdf_dp_trace(netbuf, QDF_DP_TRACE_HTC_PACKET_PTR_RECORD, 2364 QDF_TRACE_DEFAULT_PDEV_ID, qdf_nbuf_data_addr(netbuf), 2365 sizeof(qdf_nbuf_data(netbuf)), QDF_TX)); 2366 } else { 2367 LOCK_HTC_TX(target); 2368 pEndpoint = &target->endpoint[1]; 2369 } 2370 2371 /* increment tx processing count on entry */ 2372 qdf_atomic_inc(&pEndpoint->TxProcessCount); 2373 if (qdf_atomic_read(&pEndpoint->TxProcessCount) > 1) { 2374 /* 2375 * Another thread or task is draining the TX queues on this 2376 * endpoint. That thread will reset the tx processing count when 2377 * the queue is drained. 2378 */ 2379 qdf_atomic_dec(&pEndpoint->TxProcessCount); 2380 UNLOCK_HTC_TX(target); 2381 return QDF_STATUS_SUCCESS; 2382 } 2383 2384 /***** beyond this point only 1 thread may enter ******/ 2385 2386 INIT_HTC_PACKET_QUEUE(&sendQueue); 2387 if (IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 2388 #if DEBUG_CREDIT 2389 int cred = pEndpoint->TxCredits; 2390 #endif 2391 get_htc_send_packets_credit_based(target, pEndpoint, 2392 &sendQueue); 2393 #if DEBUG_CREDIT 2394 if (ep_debug_mask & (1 << pEndpoint->Id)) { 2395 if (cred - pEndpoint->TxCredits > 0) { 2396 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2397 (" <HTC> Decrease EP%d %d - %d = %d credits.\n", 2398 pEndpoint->Id, cred, 2399 cred - pEndpoint->TxCredits, 2400 pEndpoint->TxCredits)); 2401 } 2402 } 2403 #endif 2404 UNLOCK_HTC_TX(target); 2405 } 2406 2407 else if (HTC_TX_BUNDLE_ENABLED(target)) { 2408 if (hif_get_bus_type(target->hif_dev) == QDF_BUS_TYPE_USB) { 2409 if (hif_get_free_queue_number(target->hif_dev, 2410 pEndpoint->UL_PipeID)) 2411 /* 2412 * Header and payload belongs to the different 2413 * fragments and consume 2 resource for one HTC 2414 * package but USB combine into one transfer. 2415 */ 2416 get_htc_send_packets(target, pEndpoint, 2417 &sendQueue, 2418 HTC_MAX_MSG_PER_BUNDLE_TX 2419 * 2); 2420 } else { 2421 /* Dequeue max packets from endpoint tx queue */ 2422 get_htc_send_packets(target, pEndpoint, &sendQueue, 2423 HTC_MAX_TX_BUNDLE_SEND_LIMIT); 2424 } 2425 UNLOCK_HTC_TX(target); 2426 } else { 2427 /* 2428 * Now drain the endpoint TX queue for transmission as long as 2429 * we have enough transmit resources 2430 */ 2431 tx_resources = 2432 hif_get_free_queue_number(target->hif_dev, 2433 pEndpoint->UL_PipeID); 2434 get_htc_send_packets(target, pEndpoint, &sendQueue, 2435 tx_resources); 2436 UNLOCK_HTC_TX(target); 2437 } 2438 2439 /* send what we can */ 2440 while (true) { 2441 if (HTC_TX_BUNDLE_ENABLED(target) && 2442 (HTC_PACKET_QUEUE_DEPTH(&sendQueue) >= 2443 HTC_MIN_MSG_PER_BUNDLE) && 2444 (hif_get_bus_type(target->hif_dev) == QDF_BUS_TYPE_SDIO || 2445 hif_get_bus_type(target->hif_dev) == QDF_BUS_TYPE_USB)) { 2446 if (pEndpoint->EpCallBacks.ep_padding_credit_update) { 2447 if (htc_tx_pad_credit_avail(pEndpoint) < 1) { 2448 status = QDF_STATUS_E_RESOURCES; 2449 /* put the sendQueue back at the front 2450 * of pEndpoint->TxQueue 2451 */ 2452 LOCK_HTC_TX(target); 2453 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD( 2454 &pEndpoint->TxQueue, 2455 &sendQueue); 2456 UNLOCK_HTC_TX(target); 2457 break; 2458 } 2459 } 2460 htc_issue_packets_bundle(target, pEndpoint, &sendQueue); 2461 } 2462 if (pEndpoint->EpCallBacks.ep_padding_credit_update) { 2463 if (htc_tx_pad_credit_avail(pEndpoint) < 1) { 2464 status = QDF_STATUS_E_RESOURCES; 2465 /* put the sendQueue back at the front 2466 * of pEndpoint->TxQueue 2467 */ 2468 LOCK_HTC_TX(target); 2469 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD( 2470 &pEndpoint->TxQueue, 2471 &sendQueue); 2472 UNLOCK_HTC_TX(target); 2473 break; 2474 } 2475 } 2476 pPacket = htc_packet_dequeue(&sendQueue); 2477 if (!pPacket) 2478 break; 2479 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 2480 pHtcHdr = (HTC_FRAME_HDR *)qdf_nbuf_get_frag_vaddr(netbuf, 0); 2481 2482 LOCK_HTC_TX(target); 2483 /* store in look up queue to match completions */ 2484 HTC_PACKET_ENQUEUE(&pEndpoint->TxLookupQueue, pPacket); 2485 INC_HTC_EP_STAT(pEndpoint, TxIssued, 1); 2486 pEndpoint->ul_outstanding_cnt++; 2487 UNLOCK_HTC_TX(target); 2488 2489 used_extra_tx_credit = 2490 htc_handle_extra_tx_credit(pEndpoint, pPacket, 2491 (uint8_t *)pHtcHdr, 2492 NULL, 2493 pPacket->ActualLength 2494 + HTC_HDR_LENGTH); 2495 2496 status = hif_send_head(target->hif_dev, 2497 pEndpoint->UL_PipeID, 2498 pEndpoint->Id, 2499 HTC_HDR_LENGTH + pPacket->ActualLength, 2500 netbuf, data_attr); 2501 if (status != QDF_STATUS_SUCCESS) { 2502 if (pEndpoint->EpCallBacks.ep_padding_credit_update) { 2503 if (used_extra_tx_credit) { 2504 pEndpoint->EpCallBacks. 2505 ep_padding_credit_update 2506 (pEndpoint->EpCallBacks.pContext, 1); 2507 } 2508 } 2509 } 2510 #if DEBUG_BUNDLE 2511 qdf_print(" Send single EP%d buffer size:0x%x, total:0x%x.", 2512 pEndpoint->Id, 2513 pEndpoint->TxCreditSize, 2514 HTC_HDR_LENGTH + pPacket->ActualLength); 2515 #endif 2516 2517 htc_issue_tx_bundle_stats_inc(target); 2518 2519 if (qdf_unlikely(QDF_IS_STATUS_ERROR(status))) { 2520 LOCK_HTC_TX(target); 2521 pEndpoint->ul_outstanding_cnt--; 2522 /* remove this packet from the tx completion queue */ 2523 HTC_PACKET_REMOVE(&pEndpoint->TxLookupQueue, pPacket); 2524 2525 /* 2526 * Don't bother reclaiming credits - HTC flow control 2527 * is not applicable to tx data. 2528 * In LL systems, there is no download flow control, 2529 * since there's virtually no download delay. 2530 * In HL systems, the txrx SW explicitly performs the 2531 * tx flow control. 2532 */ 2533 /* pEndpoint->TxCredits += 2534 * pPacket->PktInfo.AsTx.CreditsUsed; 2535 */ 2536 2537 /* put this frame back at the front of the sendQueue */ 2538 HTC_PACKET_ENQUEUE_TO_HEAD(&sendQueue, pPacket); 2539 2540 /* put the sendQueue back at the front of 2541 * pEndpoint->TxQueue 2542 */ 2543 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxQueue, 2544 &sendQueue); 2545 UNLOCK_HTC_TX(target); 2546 break; /* still need to reset TxProcessCount */ 2547 } 2548 } 2549 /* done with this endpoint, we can clear the count */ 2550 qdf_atomic_init(&pEndpoint->TxProcessCount); 2551 2552 if (pEndpoint->ul_is_polled) { 2553 /* 2554 * Start a cleanup timer to poll for download completion. 2555 * The download completion should be noticed promptly from 2556 * other polling calls, but the timer provides a safety net 2557 * in case other polling calls don't occur as expected. 2558 */ 2559 htc_send_complete_poll_timer_start(pEndpoint); 2560 } 2561 2562 return status; 2563 } 2564 #endif /*ATH_11AC_TXCOMPACT */ 2565 qdf_export_symbol(htc_send_data_pkt); 2566 2567 /* 2568 * In the adapted HIF layer, qdf_nbuf_t are passed between HIF and HTC, 2569 * since upper layers expects HTC_PACKET containers we use the completed netbuf 2570 * and lookup its corresponding HTC packet buffer from a lookup list. 2571 * This is extra overhead that can be fixed by re-aligning HIF interfaces 2572 * with HTC. 2573 * 2574 */ 2575 static HTC_PACKET *htc_lookup_tx_packet(HTC_TARGET *target, 2576 HTC_ENDPOINT *pEndpoint, 2577 qdf_nbuf_t netbuf) 2578 { 2579 HTC_PACKET *pPacket = NULL; 2580 HTC_PACKET *pFoundPacket = NULL; 2581 HTC_PACKET_QUEUE lookupQueue; 2582 2583 INIT_HTC_PACKET_QUEUE(&lookupQueue); 2584 LOCK_HTC_EP_TX_LOOKUP(pEndpoint); 2585 2586 LOCK_HTC_TX(target); 2587 /* mark that HIF has indicated the send complete for another packet */ 2588 pEndpoint->ul_outstanding_cnt--; 2589 2590 /* Dequeue first packet directly because of in-order completion */ 2591 pPacket = htc_packet_dequeue(&pEndpoint->TxLookupQueue); 2592 if (qdf_unlikely(!pPacket)) { 2593 UNLOCK_HTC_TX(target); 2594 UNLOCK_HTC_EP_TX_LOOKUP(pEndpoint); 2595 return NULL; 2596 } 2597 if (netbuf == (qdf_nbuf_t) GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket)) { 2598 UNLOCK_HTC_TX(target); 2599 UNLOCK_HTC_EP_TX_LOOKUP(pEndpoint); 2600 return pPacket; 2601 } 2602 HTC_PACKET_ENQUEUE(&lookupQueue, pPacket); 2603 2604 /* 2605 * Move TX lookup queue to temp queue because most of packets that are 2606 * not index 0 are not top 10 packets. 2607 */ 2608 HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&lookupQueue, 2609 &pEndpoint->TxLookupQueue); 2610 2611 ITERATE_OVER_LIST_ALLOW_REMOVE(&lookupQueue.QueueHead, pPacket, 2612 HTC_PACKET, ListLink) { 2613 2614 if (!pPacket) { 2615 pFoundPacket = pPacket; 2616 break; 2617 } 2618 /* check for removal */ 2619 if (netbuf == 2620 (qdf_nbuf_t) GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket)) { 2621 /* found it */ 2622 HTC_PACKET_REMOVE(&lookupQueue, pPacket); 2623 pFoundPacket = pPacket; 2624 break; 2625 } 2626 2627 } 2628 ITERATE_END; 2629 2630 HTC_PACKET_QUEUE_TRANSFER_TO_HEAD(&pEndpoint->TxLookupQueue, 2631 &lookupQueue); 2632 UNLOCK_HTC_TX(target); 2633 UNLOCK_HTC_EP_TX_LOOKUP(pEndpoint); 2634 2635 return pFoundPacket; 2636 } 2637 2638 /** 2639 * htc_tx_completion_handler() - htc tx completion handler 2640 * @Context: pointer to HTC_TARGET structure 2641 * @netbuf: pointer to netbuf for which completion handler is being called 2642 * @EpID: end point Id on which the packet was sent 2643 * @toeplitz_hash_result: toeplitz hash result 2644 * 2645 * Return: QDF_STATUS_SUCCESS for success or an appropriate QDF_STATUS error 2646 */ 2647 QDF_STATUS htc_tx_completion_handler(void *Context, 2648 qdf_nbuf_t netbuf, unsigned int EpID, 2649 uint32_t toeplitz_hash_result) 2650 { 2651 HTC_TARGET *target = (HTC_TARGET *) Context; 2652 HTC_ENDPOINT *pEndpoint; 2653 HTC_PACKET *pPacket; 2654 #ifdef USB_HIF_SINGLE_PIPE_DATA_SCHED 2655 HTC_ENDPOINT_ID eid[DATA_EP_SIZE] = { ENDPOINT_5, ENDPOINT_4, 2656 ENDPOINT_2, ENDPOINT_3 }; 2657 int epidIdx; 2658 uint16_t resourcesThresh[DATA_EP_SIZE]; /* urb resources */ 2659 uint16_t resources; 2660 uint16_t resourcesMax; 2661 #endif 2662 2663 pEndpoint = &target->endpoint[EpID]; 2664 target->TX_comp_cnt++; 2665 pEndpoint->htc_comp_cnt++; 2666 2667 do { 2668 pPacket = htc_lookup_tx_packet(target, pEndpoint, netbuf); 2669 if (!pPacket) { 2670 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2671 ("HTC TX lookup failed!\n")); 2672 /* may have already been flushed and freed */ 2673 netbuf = NULL; 2674 break; 2675 } 2676 if (pPacket->PktInfo.AsTx.Tag != HTC_TX_PACKET_TAG_AUTO_PM && 2677 pPacket->PktInfo.AsTx.Tag != HTC_TX_PACKET_TAG_RUNTIME_PUT && 2678 pPacket->PktInfo.AsTx.Tag != HTC_TX_PACKET_TAG_RTPM_PUT_RC) { 2679 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, HIF_RTPM_ID_WMI); 2680 htc_dec_wmi_runtime_cnt(target, HIF_RTPM_ID_WMI); 2681 } 2682 2683 2684 if (pPacket->PktInfo.AsTx.Tag == HTC_TX_PACKET_TAG_BUNDLED) { 2685 HTC_PACKET *pPacketTemp; 2686 HTC_PACKET_QUEUE *pQueueSave = 2687 (HTC_PACKET_QUEUE *) pPacket->pContext; 2688 HTC_PACKET_QUEUE_ITERATE_ALLOW_REMOVE(pQueueSave, 2689 pPacketTemp) { 2690 pPacket->Status = QDF_STATUS_SUCCESS; 2691 send_packet_completion(target, pPacketTemp); 2692 } 2693 HTC_PACKET_QUEUE_ITERATE_END; 2694 free_htc_bundle_packet(target, pPacket); 2695 2696 if (hif_get_bus_type(target->hif_dev) == 2697 QDF_BUS_TYPE_USB) { 2698 if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) 2699 htc_try_send(target, pEndpoint, NULL); 2700 } 2701 2702 return QDF_STATUS_SUCCESS; 2703 } 2704 /* will be giving this buffer back to upper layers */ 2705 netbuf = NULL; 2706 pPacket->Status = QDF_STATUS_SUCCESS; 2707 send_packet_completion(target, pPacket); 2708 2709 } while (false); 2710 2711 if (!IS_TX_CREDIT_FLOW_ENABLED(pEndpoint)) { 2712 /* note: when using TX credit flow, the re-checking of queues 2713 * happens when credits flow back from the target. In the non-TX 2714 * credit case, we recheck after the packet completes 2715 */ 2716 if ((qdf_atomic_read(&pEndpoint->TxProcessCount) == 0) || 2717 (!pEndpoint->async_update)) { 2718 htc_try_send(target, pEndpoint, NULL); 2719 } 2720 } 2721 2722 return QDF_STATUS_SUCCESS; 2723 } 2724 2725 #ifdef WLAN_FEATURE_FASTPATH 2726 /** 2727 * htc_ctrl_msg_cmpl() - checks for tx completion for the endpoint specified 2728 * @htc_pdev: pointer to the htc context 2729 * @htc_ep_id: end point id 2730 * 2731 * checks HTC tx completion 2732 * 2733 * Return: none 2734 */ 2735 void htc_ctrl_msg_cmpl(HTC_HANDLE htc_pdev, HTC_ENDPOINT_ID htc_ep_id) 2736 { 2737 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_pdev); 2738 HTC_ENDPOINT *pendpoint = &target->endpoint[htc_ep_id]; 2739 2740 htc_send_complete_check(pendpoint, 1); 2741 } 2742 qdf_export_symbol(htc_ctrl_msg_cmpl); 2743 #endif 2744 2745 /* callback when TX resources become available */ 2746 void htc_tx_resource_avail_handler(void *context, uint8_t pipeID) 2747 { 2748 int i; 2749 HTC_TARGET *target = (HTC_TARGET *) context; 2750 HTC_ENDPOINT *pEndpoint = NULL; 2751 2752 for (i = 0; i < ENDPOINT_MAX; i++) { 2753 pEndpoint = &target->endpoint[i]; 2754 if (pEndpoint->service_id != 0) { 2755 if (pEndpoint->UL_PipeID == pipeID) 2756 break; 2757 } 2758 } 2759 2760 if (i >= ENDPOINT_MAX) { 2761 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2762 ("Invalid pipe indicated for TX resource avail : %d!\n", 2763 pipeID)); 2764 return; 2765 } 2766 2767 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 2768 ("HIF indicated more resources for pipe:%d\n", 2769 pipeID)); 2770 2771 htc_try_send(target, pEndpoint, NULL); 2772 } 2773 2774 #ifdef FEATURE_RUNTIME_PM 2775 /** 2776 * htc_kick_queues() - resumes tx transactions of suspended endpoints 2777 * @context: pointer to the htc target context 2778 * 2779 * Iterates through the endpoints and provides a context to empty queues 2780 * int the hif layer when they are stalled due to runtime suspend. 2781 * 2782 * Return: none 2783 */ 2784 void htc_kick_queues(void *context) 2785 { 2786 int i; 2787 HTC_TARGET *target = (HTC_TARGET *)context; 2788 HTC_ENDPOINT *endpoint = NULL; 2789 2790 if (hif_rtpm_get(HIF_RTPM_GET_SYNC, HIF_RTPM_ID_HTT)) 2791 return; 2792 2793 for (i = 0; i < ENDPOINT_MAX; i++) { 2794 endpoint = &target->endpoint[i]; 2795 2796 if (endpoint->service_id == 0) 2797 continue; 2798 2799 if (endpoint->EpCallBacks.ep_resume_tx_queue) 2800 endpoint->EpCallBacks.ep_resume_tx_queue( 2801 endpoint->EpCallBacks.pContext); 2802 2803 htc_try_send(target, endpoint, NULL); 2804 } 2805 2806 hif_fastpath_resume(target->hif_dev); 2807 2808 hif_rtpm_put(HIF_RTPM_PUT_ASYNC, HIF_RTPM_ID_HTT); 2809 } 2810 #endif 2811 2812 /* flush endpoint TX queue */ 2813 void htc_flush_endpoint_tx(HTC_TARGET *target, HTC_ENDPOINT *pEndpoint, 2814 HTC_TX_TAG Tag) 2815 { 2816 HTC_PACKET *pPacket; 2817 2818 LOCK_HTC_TX(target); 2819 while (HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue)) { 2820 pPacket = htc_packet_dequeue(&pEndpoint->TxQueue); 2821 2822 if (pPacket) { 2823 /* let the sender know the packet was not delivered */ 2824 pPacket->Status = QDF_STATUS_E_CANCELED; 2825 send_packet_completion(target, pPacket); 2826 } 2827 } 2828 UNLOCK_HTC_TX(target); 2829 } 2830 2831 /* flush pending entries in endpoint TX Lookup queue */ 2832 void htc_flush_endpoint_txlookupQ(HTC_TARGET *target, 2833 HTC_ENDPOINT_ID endpoint_id, 2834 bool call_ep_callback) 2835 { 2836 HTC_PACKET *packet; 2837 HTC_ENDPOINT *endpoint; 2838 2839 endpoint = &target->endpoint[endpoint_id]; 2840 2841 if (!endpoint && endpoint->service_id == 0) 2842 return; 2843 2844 LOCK_HTC_TX(target); 2845 while (HTC_PACKET_QUEUE_DEPTH(&endpoint->TxLookupQueue)) { 2846 packet = htc_packet_dequeue(&endpoint->TxLookupQueue); 2847 2848 if (packet) { 2849 if (call_ep_callback == true) { 2850 packet->Status = QDF_STATUS_E_CANCELED; 2851 send_packet_completion(target, packet); 2852 } else { 2853 qdf_mem_free(packet); 2854 } 2855 } 2856 } 2857 UNLOCK_HTC_TX(target); 2858 } 2859 2860 /* HTC API to flush an endpoint's TX queue*/ 2861 void htc_flush_endpoint(HTC_HANDLE HTCHandle, HTC_ENDPOINT_ID Endpoint, 2862 HTC_TX_TAG Tag) 2863 { 2864 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 2865 HTC_ENDPOINT *pEndpoint = &target->endpoint[Endpoint]; 2866 2867 if (pEndpoint->service_id == 0) { 2868 AR_DEBUG_ASSERT(false); 2869 /* not in use.. */ 2870 return; 2871 } 2872 2873 htc_flush_endpoint_tx(target, pEndpoint, Tag); 2874 } 2875 2876 /* HTC API to indicate activity to the credit distribution function */ 2877 void htc_indicate_activity_change(HTC_HANDLE HTCHandle, 2878 HTC_ENDPOINT_ID Endpoint, bool Active) 2879 { 2880 /* TODO */ 2881 } 2882 2883 bool htc_is_endpoint_active(HTC_HANDLE HTCHandle, HTC_ENDPOINT_ID Endpoint) 2884 { 2885 return true; 2886 } 2887 2888 void htc_set_pkt_dbg(HTC_HANDLE handle, A_BOOL dbg_flag) 2889 { 2890 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(handle); 2891 2892 target->htc_pkt_dbg = dbg_flag; 2893 } 2894 2895 void htc_set_nodrop_pkt(HTC_HANDLE HTCHandle, A_BOOL isNodropPkt) 2896 { 2897 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 2898 2899 target->is_nodrop_pkt = isNodropPkt; 2900 } 2901 2902 void htc_enable_hdr_length_check(HTC_HANDLE htc_hdl, bool htc_hdr_length_check) 2903 { 2904 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_hdl); 2905 2906 target->htc_hdr_length_check = htc_hdr_length_check; 2907 } 2908 2909 /** 2910 * htc_process_credit_rpt() - process credit report, call distribution function 2911 * @target: pointer to HTC_TARGET 2912 * @pRpt: pointer to HTC_CREDIT_REPORT 2913 * @NumEntries: number of entries in credit report 2914 * @FromEndpoint: endpoint for which credit report is received 2915 * 2916 * Return: A_OK for success or an appropriate A_STATUS error 2917 */ 2918 void htc_process_credit_rpt(HTC_TARGET *target, HTC_CREDIT_REPORT *pRpt, 2919 int NumEntries, HTC_ENDPOINT_ID FromEndpoint) 2920 { 2921 int i; 2922 HTC_ENDPOINT *pEndpoint; 2923 int totalCredits = 0; 2924 uint8_t rpt_credits, rpt_ep_id; 2925 2926 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 2927 ("+htc_process_credit_rpt, Credit Report Entries:%d\n", 2928 NumEntries)); 2929 2930 /* lock out TX while we update credits */ 2931 LOCK_HTC_TX(target); 2932 2933 for (i = 0; i < NumEntries; i++, pRpt++) { 2934 2935 rpt_ep_id = HTC_GET_FIELD(pRpt, HTC_CREDIT_REPORT, ENDPOINTID); 2936 2937 if (rpt_ep_id >= ENDPOINT_MAX) { 2938 AR_DEBUG_ASSERT(false); 2939 break; 2940 } 2941 2942 rpt_credits = HTC_GET_FIELD(pRpt, HTC_CREDIT_REPORT, CREDITS); 2943 2944 pEndpoint = &target->endpoint[rpt_ep_id]; 2945 #if DEBUG_CREDIT 2946 if (ep_debug_mask & (1 << pEndpoint->Id)) { 2947 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 2948 (" <HTC> Increase EP%d %d + %d = %d credits\n", 2949 rpt_ep_id, pEndpoint->TxCredits, 2950 rpt_credits, 2951 pEndpoint->TxCredits + rpt_credits)); 2952 } 2953 #endif 2954 2955 #ifdef HTC_EP_STAT_PROFILING 2956 2957 INC_HTC_EP_STAT(pEndpoint, TxCreditRpts, 1); 2958 INC_HTC_EP_STAT(pEndpoint, TxCreditsReturned, rpt_credits); 2959 2960 if (FromEndpoint == rpt_ep_id) { 2961 /* this credit report arrived on the same endpoint 2962 * indicating it arrived in an RX packet 2963 */ 2964 INC_HTC_EP_STAT(pEndpoint, TxCreditsFromRx, 2965 rpt_credits); 2966 INC_HTC_EP_STAT(pEndpoint, TxCreditRptsFromRx, 1); 2967 } else if (FromEndpoint == ENDPOINT_0) { 2968 /* this credit arrived on endpoint 0 as a NULL msg */ 2969 INC_HTC_EP_STAT(pEndpoint, TxCreditsFromEp0, 2970 rpt_credits); 2971 INC_HTC_EP_STAT(pEndpoint, TxCreditRptsFromEp0, 1); 2972 } else { 2973 /* arrived on another endpoint */ 2974 INC_HTC_EP_STAT(pEndpoint, TxCreditsFromOther, 2975 rpt_credits); 2976 INC_HTC_EP_STAT(pEndpoint, TxCreditRptsFromOther, 1); 2977 } 2978 2979 #endif 2980 2981 if (pEndpoint->service_id == WMI_CONTROL_SVC) { 2982 htc_credit_record(HTC_PROCESS_CREDIT_REPORT, 2983 pEndpoint->TxCredits + rpt_credits, 2984 HTC_PACKET_QUEUE_DEPTH(&pEndpoint-> 2985 TxQueue)); 2986 hif_latency_detect_credit_record_time( 2987 HIF_PROCESS_CREDIT_REPORT, 2988 target->hif_dev); 2989 } 2990 2991 pEndpoint->TxCredits += rpt_credits; 2992 2993 if (pEndpoint->TxCredits 2994 && HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue)) { 2995 UNLOCK_HTC_TX(target); 2996 #ifdef ATH_11AC_TXCOMPACT 2997 htc_try_send(target, pEndpoint, NULL); 2998 #else 2999 if (pEndpoint->service_id == HTT_DATA_MSG_SVC) 3000 htc_send_data_pkt((HTC_HANDLE)target, NULL, 0); 3001 else 3002 htc_try_send(target, pEndpoint, NULL); 3003 #endif 3004 LOCK_HTC_TX(target); 3005 } 3006 totalCredits += rpt_credits; 3007 } 3008 3009 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, 3010 (" Report indicated %d credits to distribute\n", 3011 totalCredits)); 3012 3013 UNLOCK_HTC_TX(target); 3014 3015 AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("-htc_process_credit_rpt\n")); 3016 } 3017 3018 /* function to fetch stats from htc layer*/ 3019 struct ol_ath_htc_stats *ieee80211_ioctl_get_htc_stats(HTC_HANDLE HTCHandle) 3020 { 3021 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 3022 3023 return &(target->htc_pkt_stats); 3024 } 3025 3026 #ifdef SYSTEM_PM_CHECK 3027 void htc_system_resume(HTC_HANDLE htc) 3028 { 3029 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc); 3030 HTC_ENDPOINT *endpoint = NULL; 3031 int i; 3032 3033 if (!target) 3034 return; 3035 3036 for (i = 0; i < ENDPOINT_MAX; i++) { 3037 endpoint = &target->endpoint[i]; 3038 3039 if (endpoint->service_id == 0) 3040 continue; 3041 3042 htc_try_send(target, endpoint, NULL); 3043 } 3044 } 3045 #endif 3046