1 /* 2 * Copyright (c) 2013-2018 The Linux Foundation. All rights reserved. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for 5 * any purpose with or without fee is hereby granted, provided that the 6 * above copyright notice and this permission notice appear in all 7 * copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 10 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 11 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 12 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 15 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 16 * PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include "htc_debug.h" 20 #include "htc_internal.h" 21 #include "htc_credit_history.h" 22 #include <hif.h> 23 #include <qdf_nbuf.h> /* qdf_nbuf_t */ 24 #include <qdf_types.h> /* qdf_print */ 25 26 #define MAX_HTC_RX_BUNDLE 2 27 28 #if defined(WLAN_DEBUG) || defined(DEBUG) 29 static ATH_DEBUG_MASK_DESCRIPTION g_htc_debug_description[] = { 30 {ATH_DEBUG_SEND, "Send"}, 31 {ATH_DEBUG_RECV, "Recv"}, 32 {ATH_DEBUG_SYNC, "Sync"}, 33 {ATH_DEBUG_DUMP, "Dump Data (RX or TX)"}, 34 {ATH_DEBUG_SETUP, "Setup"}, 35 }; 36 37 ATH_DEBUG_INSTANTIATE_MODULE_VAR(htc, 38 "htc", 39 "Host Target Communications", 40 ATH_DEBUG_MASK_DEFAULTS | ATH_DEBUG_INFO | 41 ATH_DEBUG_SETUP, 42 ATH_DEBUG_DESCRIPTION_COUNT 43 (g_htc_debug_description), 44 g_htc_debug_description); 45 46 #endif 47 48 #if (defined(CONFIG_MCL) || (QCA_WIFI_QCA8074)) 49 static const uint32_t svc_id[] = {WMI_CONTROL_SVC, WMI_CONTROL_SVC_WMAC1, 50 WMI_CONTROL_SVC_WMAC2}; 51 #else 52 static const uint32_t svc_id[] = {WMI_CONTROL_SVC}; 53 #endif 54 55 extern unsigned int htc_credit_flow; 56 57 static void reset_endpoint_states(HTC_TARGET *target); 58 59 static void destroy_htc_tx_ctrl_packet(HTC_PACKET *pPacket) 60 { 61 qdf_nbuf_t netbuf; 62 63 netbuf = (qdf_nbuf_t) GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 64 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("free ctrl netbuf :0x%pK\n", netbuf)); 65 if (netbuf != NULL) 66 qdf_nbuf_free(netbuf); 67 qdf_mem_free(pPacket); 68 } 69 70 static HTC_PACKET *build_htc_tx_ctrl_packet(qdf_device_t osdev) 71 { 72 HTC_PACKET *pPacket = NULL; 73 qdf_nbuf_t netbuf; 74 75 do { 76 pPacket = (HTC_PACKET *) qdf_mem_malloc(sizeof(HTC_PACKET)); 77 if (pPacket == NULL) 78 break; 79 netbuf = qdf_nbuf_alloc(osdev, HTC_CONTROL_BUFFER_SIZE, 80 20, 4, true); 81 if (NULL == netbuf) { 82 qdf_mem_free(pPacket); 83 pPacket = NULL; 84 qdf_print("%s: nbuf alloc failed", __func__); 85 break; 86 } 87 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, 88 ("alloc ctrl netbuf :0x%pK\n", netbuf)); 89 SET_HTC_PACKET_NET_BUF_CONTEXT(pPacket, netbuf); 90 } while (false); 91 92 return pPacket; 93 } 94 95 void htc_free_control_tx_packet(HTC_TARGET *target, HTC_PACKET *pPacket) 96 { 97 98 #ifdef TODO_FIXME 99 LOCK_HTC(target); 100 HTC_PACKET_ENQUEUE(&target->ControlBufferTXFreeList, pPacket); 101 UNLOCK_HTC(target); 102 /* TODO_FIXME netbufs cannot be RESET! */ 103 #else 104 destroy_htc_tx_ctrl_packet(pPacket); 105 #endif 106 107 } 108 109 HTC_PACKET *htc_alloc_control_tx_packet(HTC_TARGET *target) 110 { 111 #ifdef TODO_FIXME 112 HTC_PACKET *pPacket; 113 114 LOCK_HTC(target); 115 pPacket = htc_packet_dequeue(&target->ControlBufferTXFreeList); 116 UNLOCK_HTC(target); 117 118 return pPacket; 119 #else 120 return build_htc_tx_ctrl_packet(target->osdev); 121 #endif 122 } 123 124 /* Set the target failure handling callback */ 125 void htc_set_target_failure_callback(HTC_HANDLE HTCHandle, 126 HTC_TARGET_FAILURE Callback) 127 { 128 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 129 130 target->HTCInitInfo.TargetFailure = Callback; 131 } 132 133 void htc_dump(HTC_HANDLE HTCHandle, uint8_t CmdId, bool start) 134 { 135 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 136 137 hif_dump(target->hif_dev, CmdId, start); 138 } 139 140 /* cleanup the HTC instance */ 141 static void htc_cleanup(HTC_TARGET *target) 142 { 143 HTC_PACKET *pPacket; 144 int i; 145 HTC_ENDPOINT *endpoint; 146 HTC_PACKET_QUEUE *pkt_queue; 147 qdf_nbuf_t netbuf; 148 149 if (target->hif_dev != NULL) { 150 hif_detach_htc(target->hif_dev); 151 hif_mask_interrupt_call(target->hif_dev); 152 target->hif_dev = NULL; 153 } 154 155 while (true) { 156 pPacket = allocate_htc_packet_container(target); 157 if (pPacket == NULL) 158 break; 159 qdf_mem_free(pPacket); 160 } 161 162 LOCK_HTC_TX(target); 163 pPacket = target->pBundleFreeList; 164 target->pBundleFreeList = NULL; 165 UNLOCK_HTC_TX(target); 166 while (pPacket) { 167 HTC_PACKET *pPacketTmp = (HTC_PACKET *) pPacket->ListLink.pNext; 168 netbuf = GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 169 if (netbuf) 170 qdf_nbuf_free(netbuf); 171 pkt_queue = pPacket->pContext; 172 if (pkt_queue) 173 qdf_mem_free(pkt_queue); 174 qdf_mem_free(pPacket); 175 pPacket = pPacketTmp; 176 } 177 178 #ifdef TODO_FIXME 179 while (true) { 180 pPacket = htc_alloc_control_tx_packet(target); 181 if (pPacket == NULL) 182 break; 183 netbuf = (qdf_nbuf_t) GET_HTC_PACKET_NET_BUF_CONTEXT(pPacket); 184 if (netbuf != NULL) 185 qdf_nbuf_free(netbuf); 186 qdf_mem_free(pPacket); 187 } 188 #endif 189 190 htc_flush_endpoint_txlookupQ(target, ENDPOINT_0, true); 191 192 qdf_spinlock_destroy(&target->HTCLock); 193 qdf_spinlock_destroy(&target->HTCRxLock); 194 qdf_spinlock_destroy(&target->HTCTxLock); 195 qdf_spinlock_destroy(&target->HTCCreditLock); 196 for (i = 0; i < ENDPOINT_MAX; i++) { 197 endpoint = &target->endpoint[i]; 198 qdf_spinlock_destroy(&endpoint->lookup_queue_lock); 199 } 200 201 /* free our instance */ 202 qdf_mem_free(target); 203 } 204 205 #ifdef FEATURE_RUNTIME_PM 206 /** 207 * htc_runtime_pm_init(): runtime pm related intialization 208 * 209 * need to initialize a work item. 210 */ 211 static void htc_runtime_pm_init(HTC_TARGET *target) 212 { 213 qdf_create_work(0, &target->queue_kicker, htc_kick_queues, target); 214 } 215 216 /** 217 * htc_runtime_suspend() - runtime suspend HTC 218 * 219 * @htc_ctx: HTC context pointer 220 * 221 * This is a dummy function for symmetry. 222 * 223 * Return: 0 for success 224 */ 225 int htc_runtime_suspend(HTC_HANDLE htc_ctx) 226 { 227 return 0; 228 } 229 230 /** 231 * htc_runtime_resume(): resume htc 232 * 233 * The htc message queue needs to be kicked off after 234 * a runtime resume. Otherwise messages would get stuck. 235 * 236 * @htc_ctx: HTC context pointer 237 * 238 * Return: 0 for success; 239 */ 240 int htc_runtime_resume(HTC_HANDLE htc_ctx) 241 { 242 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_ctx); 243 244 if (target == NULL) 245 return 0; 246 247 qdf_sched_work(0, &target->queue_kicker); 248 return 0; 249 } 250 #else 251 static inline void htc_runtime_pm_init(HTC_TARGET *target) { } 252 #endif 253 254 /* registered target arrival callback from the HIF layer */ 255 HTC_HANDLE htc_create(void *ol_sc, struct htc_init_info *pInfo, 256 qdf_device_t osdev, uint32_t con_mode) 257 { 258 struct hif_msg_callbacks htcCallbacks; 259 HTC_ENDPOINT *pEndpoint = NULL; 260 HTC_TARGET *target = NULL; 261 int i; 262 263 if (ol_sc == NULL) { 264 HTC_ERROR("%s: ol_sc = NULL", __func__); 265 return NULL; 266 } 267 HTC_TRACE("+htc_create .. HIF :%pK", ol_sc); 268 269 A_REGISTER_MODULE_DEBUG_INFO(htc); 270 271 target = (HTC_TARGET *) qdf_mem_malloc(sizeof(HTC_TARGET)); 272 if (target == NULL) { 273 HTC_ERROR("%s: Unable to allocate memory", __func__); 274 return NULL; 275 } 276 277 htc_runtime_pm_init(target); 278 htc_credit_history_init(); 279 qdf_spinlock_create(&target->HTCLock); 280 qdf_spinlock_create(&target->HTCRxLock); 281 qdf_spinlock_create(&target->HTCTxLock); 282 for (i = 0; i < ENDPOINT_MAX; i++) { 283 pEndpoint = &target->endpoint[i]; 284 qdf_spinlock_create(&pEndpoint->lookup_queue_lock); 285 } 286 target->is_nodrop_pkt = false; 287 target->wmi_ep_count = 1; 288 289 do { 290 qdf_mem_copy(&target->HTCInitInfo, pInfo, 291 sizeof(struct htc_init_info)); 292 target->host_handle = pInfo->pContext; 293 target->osdev = osdev; 294 target->con_mode = con_mode; 295 296 reset_endpoint_states(target); 297 298 INIT_HTC_PACKET_QUEUE(&target->ControlBufferTXFreeList); 299 300 for (i = 0; i < HTC_PACKET_CONTAINER_ALLOCATION; i++) { 301 HTC_PACKET *pPacket = (HTC_PACKET *) 302 qdf_mem_malloc(sizeof(HTC_PACKET)); 303 if (pPacket != NULL) 304 free_htc_packet_container(target, pPacket); 305 } 306 307 #ifdef TODO_FIXME 308 for (i = 0; i < NUM_CONTROL_TX_BUFFERS; i++) { 309 pPacket = build_htc_tx_ctrl_packet(); 310 if (pPacket == NULL) 311 break; 312 htc_free_control_tx_packet(target, pPacket); 313 } 314 #endif 315 316 /* setup HIF layer callbacks */ 317 qdf_mem_zero(&htcCallbacks, sizeof(struct hif_msg_callbacks)); 318 htcCallbacks.Context = target; 319 htcCallbacks.rxCompletionHandler = htc_rx_completion_handler; 320 htcCallbacks.txCompletionHandler = htc_tx_completion_handler; 321 htcCallbacks.txResourceAvailHandler = 322 htc_tx_resource_avail_handler; 323 htcCallbacks.fwEventHandler = htc_fw_event_handler; 324 target->hif_dev = ol_sc; 325 326 /* Get HIF default pipe for HTC message exchange */ 327 pEndpoint = &target->endpoint[ENDPOINT_0]; 328 329 hif_post_init(target->hif_dev, target, &htcCallbacks); 330 hif_get_default_pipe(target->hif_dev, &pEndpoint->UL_PipeID, 331 &pEndpoint->DL_PipeID); 332 hif_set_initial_wakeup_cb(target->hif_dev, 333 pInfo->target_initial_wakeup_cb, 334 pInfo->target_psoc); 335 336 } while (false); 337 338 htc_recv_init(target); 339 340 HTC_TRACE("-htc_create: (0x%pK)", target); 341 342 return (HTC_HANDLE) target; 343 } 344 345 void htc_destroy(HTC_HANDLE HTCHandle) 346 { 347 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 348 349 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, 350 ("+htc_destroy .. Destroying :0x%pK\n", target)); 351 hif_stop(htc_get_hif_device(HTCHandle)); 352 if (target) 353 htc_cleanup(target); 354 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-htc_destroy\n")); 355 } 356 357 /* get the low level HIF device for the caller , the caller may wish to do low 358 * level HIF requests 359 */ 360 void *htc_get_hif_device(HTC_HANDLE HTCHandle) 361 { 362 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 363 364 return target->hif_dev; 365 } 366 367 static void htc_control_tx_complete(void *Context, HTC_PACKET *pPacket) 368 { 369 HTC_TARGET *target = (HTC_TARGET *) Context; 370 371 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, 372 ("+-htc_control_tx_complete 0x%pK (l:%d)\n", pPacket, 373 pPacket->ActualLength)); 374 htc_free_control_tx_packet(target, pPacket); 375 } 376 377 /* TODO, this is just a temporary max packet size */ 378 #define MAX_MESSAGE_SIZE 1536 379 380 /** 381 * htc_setup_epping_credit_allocation() - allocate credits/HTC buffers to WMI 382 * @scn: pointer to hif_opaque_softc 383 * @pEntry: pointer to tx credit allocation entry 384 * @credits: number of credits 385 * 386 * Return: None 387 */ 388 static void 389 htc_setup_epping_credit_allocation(struct hif_opaque_softc *scn, 390 struct htc_service_tx_credit_allocation *pEntry, 391 int credits) 392 { 393 switch (hif_get_bus_type(scn)) { 394 case QDF_BUS_TYPE_PCI: 395 pEntry++; 396 pEntry->service_id = WMI_DATA_BE_SVC; 397 pEntry->CreditAllocation = (credits >> 1); 398 399 pEntry++; 400 pEntry->service_id = WMI_DATA_BK_SVC; 401 pEntry->CreditAllocation = (credits >> 1); 402 break; 403 case QDF_BUS_TYPE_SDIO: 404 pEntry++; 405 pEntry->service_id = WMI_DATA_BE_SVC; 406 pEntry->CreditAllocation = credits; 407 break; 408 default: 409 break; 410 } 411 } 412 413 /** 414 * htc_setup_target_buffer_assignments() - setup target buffer assignments 415 * @target: HTC Target Pointer 416 * 417 * Return: A_STATUS 418 */ 419 static 420 A_STATUS htc_setup_target_buffer_assignments(HTC_TARGET *target) 421 { 422 struct htc_service_tx_credit_allocation *pEntry; 423 A_STATUS status; 424 int credits; 425 int creditsPerMaxMsg; 426 427 creditsPerMaxMsg = MAX_MESSAGE_SIZE / target->TargetCreditSize; 428 if (MAX_MESSAGE_SIZE % target->TargetCreditSize) 429 creditsPerMaxMsg++; 430 431 /* TODO, this should be configured by the caller! */ 432 433 credits = target->TotalTransmitCredits; 434 pEntry = &target->ServiceTxAllocTable[0]; 435 436 status = A_OK; 437 /* 438 * Allocate all credists/HTC buffers to WMI. 439 * no buffers are used/required for data. data always 440 * remains on host. 441 */ 442 if (HTC_IS_EPPING_ENABLED(target->con_mode)) { 443 pEntry++; 444 pEntry->service_id = WMI_CONTROL_SVC; 445 pEntry->CreditAllocation = credits; 446 /* endpoint ping is a testing tool directly on top of HTC in 447 * both target and host sides. 448 * In target side, the endppint ping fw has no wlan stack and 449 * FW mboxping app directly sits on HTC and it simply drops 450 * or loops back TX packets. For rx perf, FW mboxping app 451 * generates packets and passes packets to HTC to send to host. 452 * There is no WMI message exchanges between host and target 453 * in endpoint ping case. 454 * In host side, the endpoint ping driver is a Ethernet driver 455 * and it directly sits on HTC. Only HIF, HTC, QDF, ADF are 456 * used by the endpoint ping driver. There is no wifi stack 457 * at all in host side also. For tx perf use case, 458 * the user space mboxping app sends the raw packets to endpoint 459 * ping driver and it directly forwards to HTC for transmission 460 * to stress the bus. For the rx perf, HTC passes the received 461 * packets to endpoint ping driver and it is passed to the user 462 * space through the Ethernet interface. 463 * For credit allocation, in SDIO bus case, only BE service is 464 * used for tx/rx perf testing so that all credits are given 465 * to BE service. In PCIe and USB bus case, endpoint ping uses 466 * both BE and BK services to stress the bus so that the total 467 * credits are equally distributed to BE and BK services. 468 */ 469 470 htc_setup_epping_credit_allocation(target->hif_dev, 471 pEntry, credits); 472 } else { 473 int i; 474 uint32_t max_wmi_svc = (sizeof(svc_id) / sizeof(uint32_t)); 475 476 if ((target->wmi_ep_count == 0) || 477 (target->wmi_ep_count > max_wmi_svc)) 478 return A_ERROR; 479 480 /* 481 * Divide credit among number of endpoints for WMI 482 */ 483 credits = credits / target->wmi_ep_count; 484 for (i = 0; i < target->wmi_ep_count; i++) { 485 status = A_OK; 486 pEntry++; 487 pEntry->service_id = svc_id[i]; 488 pEntry->CreditAllocation = credits; 489 } 490 } 491 492 if (A_SUCCESS(status)) { 493 int i; 494 495 for (i = 0; i < HTC_MAX_SERVICE_ALLOC_ENTRIES; i++) { 496 if (target->ServiceTxAllocTable[i].service_id != 0) { 497 AR_DEBUG_PRINTF(ATH_DEBUG_INIT, 498 ("SVS Index : %d TX : 0x%2.2X : alloc:%d", 499 i, 500 target->ServiceTxAllocTable[i]. 501 service_id, 502 target->ServiceTxAllocTable[i]. 503 CreditAllocation)); 504 } 505 } 506 } 507 508 return status; 509 } 510 511 uint8_t htc_get_credit_allocation(HTC_TARGET *target, uint16_t service_id) 512 { 513 uint8_t allocation = 0; 514 int i; 515 516 for (i = 0; i < HTC_MAX_SERVICE_ALLOC_ENTRIES; i++) { 517 if (target->ServiceTxAllocTable[i].service_id == service_id) { 518 allocation = 519 target->ServiceTxAllocTable[i].CreditAllocation; 520 } 521 } 522 523 if (0 == allocation) { 524 AR_DEBUG_PRINTF(ATH_DEBUG_RSVD1, 525 ("HTC Service TX : 0x%2.2X : allocation is zero!\n", 526 service_id)); 527 } 528 529 return allocation; 530 } 531 532 QDF_STATUS htc_wait_target(HTC_HANDLE HTCHandle) 533 { 534 QDF_STATUS status = QDF_STATUS_SUCCESS; 535 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 536 HTC_READY_EX_MSG *pReadyMsg; 537 struct htc_service_connect_req connect; 538 struct htc_service_connect_resp resp; 539 HTC_READY_MSG *rdy_msg; 540 uint16_t htc_rdy_msg_id; 541 uint8_t i = 0; 542 HTC_PACKET *rx_bundle_packet, *temp_bundle_packet; 543 544 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, 545 ("htc_wait_target - Enter (target:0x%pK)\n", HTCHandle)); 546 AR_DEBUG_PRINTF(ATH_DEBUG_RSVD1, ("+HWT\n")); 547 548 do { 549 550 status = hif_start(target->hif_dev); 551 if (QDF_IS_STATUS_ERROR(status)) { 552 AR_DEBUG_PRINTF(ATH_DEBUG_ERROR, 553 ("hif_start failed\n")); 554 break; 555 } 556 557 status = htc_wait_recv_ctrl_message(target); 558 559 if (QDF_IS_STATUS_ERROR(status)) 560 break; 561 562 if (target->CtrlResponseLength < (sizeof(HTC_READY_EX_MSG))) { 563 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 564 ("Invalid HTC Ready Msg Len:%d!\n", 565 target->CtrlResponseLength)); 566 status = QDF_STATUS_E_BADMSG; 567 break; 568 } 569 570 pReadyMsg = (HTC_READY_EX_MSG *) target->CtrlResponseBuffer; 571 572 rdy_msg = &pReadyMsg->Version2_0_Info; 573 htc_rdy_msg_id = 574 HTC_GET_FIELD(rdy_msg, HTC_READY_MSG, MESSAGEID); 575 if (htc_rdy_msg_id != HTC_MSG_READY_ID) { 576 AR_DEBUG_PRINTF(ATH_DEBUG_ERR, 577 ("Invalid HTC Ready Msg : 0x%X!\n", 578 htc_rdy_msg_id)); 579 status = QDF_STATUS_E_BADMSG; 580 break; 581 } 582 583 target->TotalTransmitCredits = 584 HTC_GET_FIELD(rdy_msg, HTC_READY_MSG, CREDITCOUNT); 585 target->TargetCreditSize = 586 (int)HTC_GET_FIELD(rdy_msg, HTC_READY_MSG, CREDITSIZE); 587 target->MaxMsgsPerHTCBundle = 588 (uint8_t) pReadyMsg->MaxMsgsPerHTCBundle; 589 UPDATE_ALT_CREDIT(target, pReadyMsg->AltDataCreditSize); 590 /* for old fw this value is set to 0. But the minimum value 591 * should be 1, i.e., no bundling 592 */ 593 if (target->MaxMsgsPerHTCBundle < 1) 594 target->MaxMsgsPerHTCBundle = 1; 595 596 AR_DEBUG_PRINTF(ATH_DEBUG_INIT, 597 ("Target Ready! TX resource : %d size:%d, MaxMsgsPerHTCBundle = %d", 598 target->TotalTransmitCredits, 599 target->TargetCreditSize, 600 target->MaxMsgsPerHTCBundle)); 601 602 if ((0 == target->TotalTransmitCredits) 603 || (0 == target->TargetCreditSize)) { 604 status = QDF_STATUS_E_ABORTED; 605 break; 606 } 607 608 /* Allocate expected number of RX bundle buffer allocation */ 609 if (HTC_RX_BUNDLE_ENABLED(target)) { 610 temp_bundle_packet = NULL; 611 for (i = 0; i < MAX_HTC_RX_BUNDLE; i++) { 612 rx_bundle_packet = 613 allocate_htc_bundle_packet(target); 614 if (rx_bundle_packet != NULL) 615 rx_bundle_packet->ListLink.pNext = 616 (DL_LIST *)temp_bundle_packet; 617 else 618 break; 619 620 temp_bundle_packet = rx_bundle_packet; 621 } 622 LOCK_HTC_TX(target); 623 target->pBundleFreeList = temp_bundle_packet; 624 UNLOCK_HTC_TX(target); 625 } 626 627 /* done processing */ 628 target->CtrlResponseProcessing = false; 629 630 htc_setup_target_buffer_assignments(target); 631 632 /* setup our pseudo HTC control endpoint connection */ 633 qdf_mem_zero(&connect, sizeof(connect)); 634 qdf_mem_zero(&resp, sizeof(resp)); 635 connect.EpCallbacks.pContext = target; 636 connect.EpCallbacks.EpTxComplete = htc_control_tx_complete; 637 connect.EpCallbacks.EpRecv = htc_control_rx_complete; 638 connect.MaxSendQueueDepth = NUM_CONTROL_TX_BUFFERS; 639 connect.service_id = HTC_CTRL_RSVD_SVC; 640 641 /* connect fake service */ 642 status = htc_connect_service((HTC_HANDLE) target, 643 &connect, &resp); 644 645 } while (false); 646 647 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("htc_wait_target - Exit (%d)\n", 648 status)); 649 AR_DEBUG_PRINTF(ATH_DEBUG_RSVD1, ("-HWT\n")); 650 return status; 651 } 652 653 /* start HTC, this is called after all services are connected */ 654 static A_STATUS htc_config_target_hif_pipe(HTC_TARGET *target) 655 { 656 657 return A_OK; 658 } 659 660 static void reset_endpoint_states(HTC_TARGET *target) 661 { 662 HTC_ENDPOINT *pEndpoint; 663 int i; 664 665 for (i = ENDPOINT_0; i < ENDPOINT_MAX; i++) { 666 pEndpoint = &target->endpoint[i]; 667 pEndpoint->service_id = 0; 668 pEndpoint->MaxMsgLength = 0; 669 pEndpoint->MaxTxQueueDepth = 0; 670 pEndpoint->Id = i; 671 INIT_HTC_PACKET_QUEUE(&pEndpoint->TxQueue); 672 INIT_HTC_PACKET_QUEUE(&pEndpoint->TxLookupQueue); 673 INIT_HTC_PACKET_QUEUE(&pEndpoint->RxBufferHoldQueue); 674 pEndpoint->target = target; 675 pEndpoint->TxCreditFlowEnabled = (bool)htc_credit_flow; 676 qdf_atomic_init(&pEndpoint->TxProcessCount); 677 } 678 } 679 680 /** 681 * htc_start() - Main HTC function to trigger HTC start 682 * @HTCHandle: pointer to HTC handle 683 * 684 * Return: QDF_STATUS_SUCCESS for success or an appropriate QDF_STATUS error 685 */ 686 QDF_STATUS htc_start(HTC_HANDLE HTCHandle) 687 { 688 qdf_nbuf_t netbuf; 689 QDF_STATUS status = QDF_STATUS_SUCCESS; 690 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 691 HTC_SETUP_COMPLETE_EX_MSG *pSetupComp; 692 HTC_PACKET *pSendPacket; 693 694 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("htc_start Enter\n")); 695 696 do { 697 698 htc_config_target_hif_pipe(target); 699 700 /* allocate a buffer to send */ 701 pSendPacket = htc_alloc_control_tx_packet(target); 702 if (NULL == pSendPacket) { 703 AR_DEBUG_ASSERT(false); 704 qdf_print("%s: allocControlTxPacket failed", 705 __func__); 706 status = QDF_STATUS_E_NOMEM; 707 break; 708 } 709 710 netbuf = 711 (qdf_nbuf_t) GET_HTC_PACKET_NET_BUF_CONTEXT(pSendPacket); 712 /* assemble setup complete message */ 713 qdf_nbuf_put_tail(netbuf, sizeof(HTC_SETUP_COMPLETE_EX_MSG)); 714 pSetupComp = 715 (HTC_SETUP_COMPLETE_EX_MSG *) qdf_nbuf_data(netbuf); 716 qdf_mem_zero(pSetupComp, sizeof(HTC_SETUP_COMPLETE_EX_MSG)); 717 718 HTC_SET_FIELD(pSetupComp, HTC_SETUP_COMPLETE_EX_MSG, 719 MESSAGEID, HTC_MSG_SETUP_COMPLETE_EX_ID); 720 721 if (!htc_credit_flow) { 722 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, 723 ("HTC will not use TX credit flow control")); 724 pSetupComp->SetupFlags |= 725 HTC_SETUP_COMPLETE_FLAGS_DISABLE_TX_CREDIT_FLOW; 726 } else { 727 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, 728 ("HTC using TX credit flow control")); 729 } 730 731 if ((hif_get_bus_type(target->hif_dev) == QDF_BUS_TYPE_SDIO) || 732 (hif_get_bus_type(target->hif_dev) == 733 QDF_BUS_TYPE_USB)) { 734 if (HTC_RX_BUNDLE_ENABLED(target)) 735 pSetupComp->SetupFlags |= 736 HTC_SETUP_COMPLETE_FLAGS_ENABLE_BUNDLE_RECV; 737 hif_set_bundle_mode(target->hif_dev, true, 738 HTC_MAX_MSG_PER_BUNDLE_RX); 739 } 740 741 SET_HTC_PACKET_INFO_TX(pSendPacket, 742 NULL, 743 (uint8_t *) pSetupComp, 744 sizeof(HTC_SETUP_COMPLETE_EX_MSG), 745 ENDPOINT_0, HTC_SERVICE_TX_PACKET_TAG); 746 747 status = htc_send_pkt((HTC_HANDLE) target, pSendPacket); 748 if (QDF_IS_STATUS_ERROR(status)) 749 break; 750 } while (false); 751 752 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("htc_start Exit\n")); 753 return status; 754 } 755 756 /*flush all queued buffers for surpriseremove case*/ 757 void htc_flush_surprise_remove(HTC_HANDLE HTCHandle) 758 { 759 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 760 int i; 761 HTC_ENDPOINT *pEndpoint; 762 #ifdef RX_SG_SUPPORT 763 qdf_nbuf_t netbuf; 764 qdf_nbuf_queue_t *rx_sg_queue = &target->RxSgQueue; 765 #endif 766 767 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+htc_flush_surprise_remove\n")); 768 769 /* cleanup endpoints */ 770 for (i = 0; i < ENDPOINT_MAX; i++) { 771 pEndpoint = &target->endpoint[i]; 772 htc_flush_rx_hold_queue(target, pEndpoint); 773 htc_flush_endpoint_tx(target, pEndpoint, HTC_TX_PACKET_TAG_ALL); 774 } 775 776 hif_flush_surprise_remove(target->hif_dev); 777 778 #ifdef RX_SG_SUPPORT 779 LOCK_HTC_RX(target); 780 while ((netbuf = qdf_nbuf_queue_remove(rx_sg_queue)) != NULL) 781 qdf_nbuf_free(netbuf); 782 RESET_RX_SG_CONFIG(target); 783 UNLOCK_HTC_RX(target); 784 #endif 785 786 reset_endpoint_states(target); 787 788 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-htc_flush_surprise_remove\n")); 789 } 790 791 /* stop HTC communications, i.e. stop interrupt reception, and flush all queued 792 * buffers 793 */ 794 void htc_stop(HTC_HANDLE HTCHandle) 795 { 796 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 797 int i; 798 HTC_ENDPOINT *pEndpoint; 799 #ifdef RX_SG_SUPPORT 800 qdf_nbuf_t netbuf; 801 qdf_nbuf_queue_t *rx_sg_queue = &target->RxSgQueue; 802 #endif 803 804 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("+htc_stop\n")); 805 806 /* cleanup endpoints */ 807 for (i = 0; i < ENDPOINT_MAX; i++) { 808 pEndpoint = &target->endpoint[i]; 809 htc_flush_rx_hold_queue(target, pEndpoint); 810 htc_flush_endpoint_tx(target, pEndpoint, HTC_TX_PACKET_TAG_ALL); 811 if (pEndpoint->ul_is_polled) { 812 qdf_timer_stop(&pEndpoint->ul_poll_timer); 813 qdf_timer_free(&pEndpoint->ul_poll_timer); 814 } 815 } 816 817 /* Note: htc_flush_endpoint_tx for all endpoints should be called before 818 * hif_stop - otherwise htc_tx_completion_handler called from 819 * hif_send_buffer_cleanup_on_pipe for residual tx frames in HIF layer, 820 * might queue the packet again to HIF Layer - which could cause tx 821 * buffer leak 822 */ 823 824 hif_stop(target->hif_dev); 825 826 #ifdef RX_SG_SUPPORT 827 LOCK_HTC_RX(target); 828 while ((netbuf = qdf_nbuf_queue_remove(rx_sg_queue)) != NULL) 829 qdf_nbuf_free(netbuf); 830 RESET_RX_SG_CONFIG(target); 831 UNLOCK_HTC_RX(target); 832 #endif 833 834 /** 835 * In SSR case, HTC tx completion callback for wmi will be blocked 836 * by TARGET_STATUS_RESET and HTC packets will be left unfreed on 837 * lookup queue. 838 */ 839 for (i = 0; i < ENDPOINT_MAX; i++) { 840 pEndpoint = &target->endpoint[i]; 841 if (pEndpoint->service_id == WMI_CONTROL_SVC) 842 htc_flush_endpoint_txlookupQ(target, i, false); 843 } 844 845 reset_endpoint_states(target); 846 847 AR_DEBUG_PRINTF(ATH_DEBUG_TRC, ("-htc_stop\n")); 848 } 849 850 void htc_dump_credit_states(HTC_HANDLE HTCHandle) 851 { 852 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 853 HTC_ENDPOINT *pEndpoint; 854 int i; 855 856 for (i = 0; i < ENDPOINT_MAX; i++) { 857 pEndpoint = &target->endpoint[i]; 858 if (0 == pEndpoint->service_id) 859 continue; 860 861 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 862 ("--- EP : %d service_id: 0x%X --------------\n", 863 pEndpoint->Id, pEndpoint->service_id)); 864 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 865 (" TxCredits : %d\n", 866 pEndpoint->TxCredits)); 867 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 868 (" TxCreditSize : %d\n", 869 pEndpoint->TxCreditSize)); 870 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 871 (" TxCreditsPerMaxMsg : %d\n", 872 pEndpoint->TxCreditsPerMaxMsg)); 873 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 874 (" TxQueueDepth : %d\n", 875 HTC_PACKET_QUEUE_DEPTH(&pEndpoint->TxQueue))); 876 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 877 ("----------------------------------------\n")); 878 } 879 } 880 881 bool htc_get_endpoint_statistics(HTC_HANDLE HTCHandle, 882 HTC_ENDPOINT_ID Endpoint, 883 enum htc_endpoint_stat_action Action, 884 struct htc_endpoint_stats *pStats) 885 { 886 #ifdef HTC_EP_STAT_PROFILING 887 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 888 bool clearStats = false; 889 bool sample = false; 890 891 switch (Action) { 892 case HTC_EP_STAT_SAMPLE: 893 sample = true; 894 break; 895 case HTC_EP_STAT_SAMPLE_AND_CLEAR: 896 sample = true; 897 clearStats = true; 898 break; 899 case HTC_EP_STAT_CLEAR: 900 clearStats = true; 901 break; 902 default: 903 break; 904 } 905 906 A_ASSERT(Endpoint < ENDPOINT_MAX); 907 908 /* lock out TX and RX while we sample and/or clear */ 909 LOCK_HTC_TX(target); 910 LOCK_HTC_RX(target); 911 912 if (sample) { 913 A_ASSERT(pStats != NULL); 914 /* return the stats to the caller */ 915 qdf_mem_copy(pStats, &target->endpoint[Endpoint].endpoint_stats, 916 sizeof(struct htc_endpoint_stats)); 917 } 918 919 if (clearStats) { 920 /* reset stats */ 921 qdf_mem_zero(&target->endpoint[Endpoint].endpoint_stats, 922 sizeof(struct htc_endpoint_stats)); 923 } 924 925 UNLOCK_HTC_RX(target); 926 UNLOCK_HTC_TX(target); 927 928 return true; 929 #else 930 return false; 931 #endif 932 } 933 934 void *htc_get_targetdef(HTC_HANDLE htc_handle) 935 { 936 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 937 938 return hif_get_targetdef(target->hif_dev); 939 } 940 941 #ifdef IPA_OFFLOAD 942 /** 943 * htc_ipa_get_ce_resource() - get uc resource on lower layer 944 * @htc_handle: htc context 945 * @ce_sr_base_paddr: copyengine source ring base physical address 946 * @ce_sr_ring_size: copyengine source ring size 947 * @ce_reg_paddr: copyengine register physical address 948 * 949 * Return: None 950 */ 951 void htc_ipa_get_ce_resource(HTC_HANDLE htc_handle, 952 qdf_shared_mem_t **ce_sr, 953 uint32_t *ce_sr_ring_size, 954 qdf_dma_addr_t *ce_reg_paddr) 955 { 956 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 957 958 if (target->hif_dev) 959 hif_ipa_get_ce_resource(target->hif_dev, 960 ce_sr, ce_sr_ring_size, ce_reg_paddr); 961 } 962 #endif /* IPA_OFFLOAD */ 963 964 #if defined(DEBUG_HL_LOGGING) && defined(CONFIG_HL_SUPPORT) 965 966 void htc_dump_bundle_stats(HTC_HANDLE HTCHandle) 967 { 968 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 969 int total, i; 970 971 total = 0; 972 for (i = 0; i < HTC_MAX_MSG_PER_BUNDLE_RX; i++) 973 total += target->rx_bundle_stats[i]; 974 975 if (total) { 976 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("RX Bundle stats:\n")); 977 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("Total RX packets: %d\n", 978 total)); 979 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ( 980 "Number of bundle: Number of packets\n")); 981 for (i = 0; i < HTC_MAX_MSG_PER_BUNDLE_RX; i++) 982 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 983 ("%10d:%10d(%2d%s)\n", (i+1), 984 target->rx_bundle_stats[i], 985 ((target->rx_bundle_stats[i]*100)/ 986 total), "%")); 987 } 988 989 990 total = 0; 991 for (i = 0; i < HTC_MAX_MSG_PER_BUNDLE_TX; i++) 992 total += target->tx_bundle_stats[i]; 993 994 if (total) { 995 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("TX Bundle stats:\n")); 996 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, ("Total TX packets: %d\n", 997 total)); 998 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 999 ("Number of bundle: Number of packets\n")); 1000 for (i = 0; i < HTC_MAX_MSG_PER_BUNDLE_TX; i++) 1001 AR_DEBUG_PRINTF(ATH_DEBUG_ANY, 1002 ("%10d:%10d(%2d%s)\n", (i+1), 1003 target->tx_bundle_stats[i], 1004 ((target->tx_bundle_stats[i]*100)/ 1005 total), "%")); 1006 } 1007 } 1008 1009 void htc_clear_bundle_stats(HTC_HANDLE HTCHandle) 1010 { 1011 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(HTCHandle); 1012 1013 qdf_mem_zero(&target->rx_bundle_stats, sizeof(target->rx_bundle_stats)); 1014 qdf_mem_zero(&target->tx_bundle_stats, sizeof(target->tx_bundle_stats)); 1015 } 1016 #endif 1017 1018 /** 1019 * htc_vote_link_down - API to vote for link down 1020 * @htc_handle: HTC handle 1021 * 1022 * API for upper layers to call HIF to vote for link down 1023 * 1024 * Return: void 1025 */ 1026 void htc_vote_link_down(HTC_HANDLE htc_handle) 1027 { 1028 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1029 1030 if (!target->hif_dev) 1031 return; 1032 1033 hif_vote_link_down(target->hif_dev); 1034 } 1035 1036 /** 1037 * htc_vote_link_up - API to vote for link up 1038 * @htc_handle: HTC Handle 1039 * 1040 * API for upper layers to call HIF to vote for link up 1041 * 1042 * Return: void 1043 */ 1044 void htc_vote_link_up(HTC_HANDLE htc_handle) 1045 { 1046 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1047 1048 if (!target->hif_dev) 1049 return; 1050 1051 hif_vote_link_up(target->hif_dev); 1052 } 1053 1054 /** 1055 * htc_can_suspend_link - API to query HIF for link status 1056 * @htc_handle: HTC Handle 1057 * 1058 * API for upper layers to call HIF to query if the link can suspend 1059 * 1060 * Return: void 1061 */ 1062 bool htc_can_suspend_link(HTC_HANDLE htc_handle) 1063 { 1064 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1065 1066 if (!target->hif_dev) 1067 return false; 1068 1069 return hif_can_suspend_link(target->hif_dev); 1070 } 1071 1072 #ifdef FEATURE_RUNTIME_PM 1073 int htc_pm_runtime_get(HTC_HANDLE htc_handle) 1074 { 1075 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1076 1077 return hif_pm_runtime_get(target->hif_dev); 1078 } 1079 1080 int htc_pm_runtime_put(HTC_HANDLE htc_handle) 1081 { 1082 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1083 1084 return hif_pm_runtime_put(target->hif_dev); 1085 } 1086 #endif 1087 1088 /** 1089 * htc_set_wmi_endpoint_count: Set number of WMI endpoint 1090 * @htc_handle: HTC handle 1091 * @wmi_ep_count: WMI enpoint count 1092 * 1093 * return: None 1094 */ 1095 void htc_set_wmi_endpoint_count(HTC_HANDLE htc_handle, uint8_t wmi_ep_count) 1096 { 1097 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1098 1099 target->wmi_ep_count = wmi_ep_count; 1100 } 1101 1102 /** 1103 * htc_get_wmi_endpoint_count: Get number of WMI endpoint 1104 * @htc_handle: HTC handle 1105 * 1106 * return: WMI enpoint count 1107 */ 1108 uint8_t htc_get_wmi_endpoint_count(HTC_HANDLE htc_handle) 1109 { 1110 HTC_TARGET *target = GET_HTC_TARGET_FROM_HANDLE(htc_handle); 1111 1112 return target->wmi_ep_count; 1113 } 1114