diff options
Diffstat (limited to 'drivers/net/wireless/ath6kl/htc2/AR6000/ar6k_gmbox_hciuart.c')
| -rw-r--r-- | drivers/net/wireless/ath6kl/htc2/AR6000/ar6k_gmbox_hciuart.c | 1255 |
1 files changed, 1255 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath6kl/htc2/AR6000/ar6k_gmbox_hciuart.c b/drivers/net/wireless/ath6kl/htc2/AR6000/ar6k_gmbox_hciuart.c new file mode 100644 index 000000000000..ec5c1dc18ed2 --- /dev/null +++ b/drivers/net/wireless/ath6kl/htc2/AR6000/ar6k_gmbox_hciuart.c @@ -0,0 +1,1255 @@ +//------------------------------------------------------------------------------ +// <copyright file="ar6k_prot_hciUart.c" company="Atheros"> +// Copyright (c) 2007-2008 Atheros Corporation. All rights reserved. +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2 as +// published by the Free Software Foundation; +// +// Software distributed under the License is distributed on an "AS +// IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or +// implied. See the License for the specific language governing +// rights and limitations under the License. +// +// +//------------------------------------------------------------------------------ +//============================================================================== +// Protocol module for use in bridging HCI-UART packets over the GMBOX interface +// +// Author(s): ="Atheros" +//============================================================================== +#include "a_config.h" +#include "athdefs.h" +#include "a_types.h" +#include "a_osapi.h" +#include "../htc_debug.h" +#include "hif.h" +#include "htc_packet.h" +#include "ar6k.h" +#include "hci_transport_api.h" +#include "gmboxif.h" +#include "ar6000_diag.h" +#include "hw/apb_map.h" +#include "hw/mbox_reg.h" + +#ifdef ATH_AR6K_ENABLE_GMBOX +#define HCI_UART_COMMAND_PKT 0x01 +#define HCI_UART_ACL_PKT 0x02 +#define HCI_UART_SCO_PKT 0x03 +#define HCI_UART_EVENT_PKT 0x04 + +#define HCI_RECV_WAIT_BUFFERS (1 << 0) + +#define HCI_SEND_WAIT_CREDITS (1 << 0) + +#define HCI_UART_BRIDGE_CREDIT_SIZE 128 + +#define CREDIT_POLL_COUNT 256 + +#define HCI_DELAY_PER_INTERVAL_MS 10 +#define BTON_TIMEOUT_MS 500 +#define BTOFF_TIMEOUT_MS 500 +#define BAUD_TIMEOUT_MS 1 + +typedef struct { + HCI_TRANSPORT_CONFIG_INFO HCIConfig; + A_BOOL HCIAttached; + A_BOOL HCIStopped; + A_UINT32 RecvStateFlags; + A_UINT32 SendStateFlags; + HCI_TRANSPORT_PACKET_TYPE WaitBufferType; + HTC_PACKET_QUEUE SendQueue; /* write queue holding HCI Command and ACL packets */ + HTC_PACKET_QUEUE HCIACLRecvBuffers; /* recv queue holding buffers for incomming ACL packets */ + HTC_PACKET_QUEUE HCIEventBuffers; /* recv queue holding buffers for incomming event packets */ + AR6K_DEVICE *pDev; + A_MUTEX_T HCIRxLock; + A_MUTEX_T HCITxLock; + int CreditsMax; + int CreditsConsumed; + int CreditsAvailable; + int CreditSize; + int CreditsCurrentSeek; + int SendProcessCount; +} GMBOX_PROTO_HCI_UART; + +#define LOCK_HCI_RX(t) A_MUTEX_LOCK(&(t)->HCIRxLock); +#define UNLOCK_HCI_RX(t) A_MUTEX_UNLOCK(&(t)->HCIRxLock); +#define LOCK_HCI_TX(t) A_MUTEX_LOCK(&(t)->HCITxLock); +#define UNLOCK_HCI_TX(t) A_MUTEX_UNLOCK(&(t)->HCITxLock); + +#define DO_HCI_RECV_INDICATION(p,pt) \ +{ AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("HCI: Indicate Recv on packet:0x%X status:%d len:%d type:%d \n", \ + (A_UINT32)(pt),(pt)->Status, A_SUCCESS((pt)->Status) ? (pt)->ActualLength : 0, HCI_GET_PACKET_TYPE(pt))); \ + (p)->HCIConfig.pHCIPktRecv((p)->HCIConfig.pContext, (pt)); \ +} + +#define DO_HCI_SEND_INDICATION(p,pt) \ +{ AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: Indicate Send on packet:0x%X status:%d type:%d \n", \ + (A_UINT32)(pt),(pt)->Status,HCI_GET_PACKET_TYPE(pt))); \ + (p)->HCIConfig.pHCISendComplete((p)->HCIConfig.pContext, (pt)); \ +} + +static A_STATUS HCITrySend(GMBOX_PROTO_HCI_UART *pProt, HTC_PACKET *pPacket, A_BOOL Synchronous); + +static void HCIUartCleanup(GMBOX_PROTO_HCI_UART *pProtocol) +{ + A_ASSERT(pProtocol != NULL); + + A_MUTEX_DELETE(&pProtocol->HCIRxLock); + A_MUTEX_DELETE(&pProtocol->HCITxLock); + + A_FREE(pProtocol); +} + +static A_STATUS InitTxCreditState(GMBOX_PROTO_HCI_UART *pProt) +{ + A_STATUS status; + int credits; + int creditPollCount = CREDIT_POLL_COUNT; + A_BOOL gotCredits = FALSE; + + pProt->CreditsConsumed = 0; + + do { + + if (pProt->CreditsMax != 0) { + /* we can only call this only once per target reset */ + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("HCI: InitTxCreditState - already called! \n")); + A_ASSERT(FALSE); + status = A_EINVAL; + break; + } + + /* read the credit counter. At startup the target will set the credit counter + * to the max available, we read this in a loop because it may take + * multiple credit counter reads to get all credits */ + + while (creditPollCount) { + + credits = 0; + + status = DevGMboxReadCreditCounter(pProt->pDev, PROC_IO_SYNC, &credits); + + if (A_FAILED(status)) { + break; + } + + if (!gotCredits && (0 == credits)) { + creditPollCount--; + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: credit is 0, retrying (%d) \n",creditPollCount)); + A_MDELAY(HCI_DELAY_PER_INTERVAL_MS); + continue; + } else { + gotCredits = TRUE; + } + + if (0 == credits) { + break; + } + + pProt->CreditsMax += credits; + } + + if (A_FAILED(status)) { + break; + } + + if (0 == creditPollCount) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, + ("** HCI : Failed to get credits! GMBOX Target was not available \n")); + status = A_ERROR; + break; + } + + /* now get the size */ + status = DevGMboxReadCreditSize(pProt->pDev, &pProt->CreditSize); + + if (A_FAILED(status)) { + break; + } + + } while (FALSE); + + if (A_SUCCESS(status)) { + pProt->CreditsAvailable = pProt->CreditsMax; + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("HCI : InitTxCreditState - credits avail: %d, size: %d \n", + pProt->CreditsAvailable, pProt->CreditSize)); + } + + return status; +} + +static A_STATUS CreditsAvailableCallback(void *pContext, int Credits, A_BOOL CreditIRQEnabled) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)pContext; + A_BOOL enableCreditIrq = FALSE; + A_BOOL disableCreditIrq = FALSE; + A_BOOL doPendingSends = FALSE; + A_STATUS status = A_OK; + + /** this callback is called under 2 conditions: + * 1. The credit IRQ interrupt was enabled and signaled. + * 2. A credit counter read completed. + * + * The function must not assume that the calling context can block ! + */ + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+CreditsAvailableCallback (Credits:%d, IRQ:%s) \n", + Credits, CreditIRQEnabled ? "ON" : "OFF")); + + LOCK_HCI_RX(pProt); + + do { + + if (0 == Credits) { + if (!CreditIRQEnabled) { + /* enable credit IRQ */ + enableCreditIrq = TRUE; + } + break; + } + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: current credit state, consumed:%d available:%d max:%d seek:%d\n", + pProt->CreditsConsumed, + pProt->CreditsAvailable, + pProt->CreditsMax, + pProt->CreditsCurrentSeek)); + + pProt->CreditsAvailable += Credits; + A_ASSERT(pProt->CreditsAvailable <= pProt->CreditsMax); + pProt->CreditsConsumed -= Credits; + A_ASSERT(pProt->CreditsConsumed >= 0); + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: new credit state, consumed:%d available:%d max:%d seek:%d\n", + pProt->CreditsConsumed, + pProt->CreditsAvailable, + pProt->CreditsMax, + pProt->CreditsCurrentSeek)); + + if (pProt->CreditsAvailable >= pProt->CreditsCurrentSeek) { + /* we have enough credits to fullfill at least 1 packet waiting in the queue */ + pProt->CreditsCurrentSeek = 0; + pProt->SendStateFlags &= ~HCI_SEND_WAIT_CREDITS; + doPendingSends = TRUE; + if (CreditIRQEnabled) { + /* credit IRQ was enabled, we shouldn't need it anymore */ + disableCreditIrq = TRUE; + } + } else { + /* not enough credits yet, enable credit IRQ if we haven't already */ + if (!CreditIRQEnabled) { + enableCreditIrq = TRUE; + } + } + + } while (FALSE); + + UNLOCK_HCI_RX(pProt); + + if (enableCreditIrq) { + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,(" Enabling credit count IRQ...\n")); + /* must use async only */ + status = DevGMboxIRQAction(pProt->pDev, GMBOX_CREDIT_IRQ_ENABLE, PROC_IO_ASYNC); + } else if (disableCreditIrq) { + /* must use async only */ + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,(" Disabling credit count IRQ...\n")); + status = DevGMboxIRQAction(pProt->pDev, GMBOX_CREDIT_IRQ_DISABLE, PROC_IO_ASYNC); + } + + if (doPendingSends) { + HCITrySend(pProt, NULL, FALSE); + } + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+CreditsAvailableCallback \n")); + return status; +} + +static INLINE void NotifyTransportFailure(GMBOX_PROTO_HCI_UART *pProt, A_STATUS status) +{ + if (pProt->HCIConfig.TransportFailure != NULL) { + pProt->HCIConfig.TransportFailure(pProt->HCIConfig.pContext, status); + } +} + +static void FailureCallback(void *pContext, A_STATUS Status) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)pContext; + + /* target assertion occured */ + NotifyTransportFailure(pProt, Status); +} + +static void StateDumpCallback(void *pContext) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)pContext; + + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("============ HCIUart State ======================\n")); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("RecvStateFlags : 0x%X \n",pProt->RecvStateFlags)); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("SendStateFlags : 0x%X \n",pProt->SendStateFlags)); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("WaitBufferType : %d \n",pProt->WaitBufferType)); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("SendQueue Depth : %d \n",HTC_PACKET_QUEUE_DEPTH(&pProt->SendQueue))); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("CreditsMax : %d \n",pProt->CreditsMax)); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("CreditsConsumed : %d \n",pProt->CreditsConsumed)); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("CreditsAvailable : %d \n",pProt->CreditsAvailable)); + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("==================================================\n")); +} + +static A_STATUS HCIUartMessagePending(void *pContext, A_UINT8 LookAheadBytes[], int ValidBytes) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)pContext; + A_STATUS status = A_OK; + int totalRecvLength = 0; + HCI_TRANSPORT_PACKET_TYPE pktType = HCI_PACKET_INVALID; + A_BOOL recvRefillCalled = FALSE; + A_BOOL blockRecv = FALSE; + HTC_PACKET *pPacket = NULL; + + /** caller guarantees that this is a fully block-able context (synch I/O is allowed) */ + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+HCIUartMessagePending Lookahead Bytes:%d \n",ValidBytes)); + + LOCK_HCI_RX(pProt); + + do { + + if (ValidBytes < 3) { + /* not enough for ACL or event header */ + break; + } + + if ((LookAheadBytes[0] == HCI_UART_ACL_PKT) && (ValidBytes < 5)) { + /* not enough for ACL data header */ + break; + } + + switch (LookAheadBytes[0]) { + case HCI_UART_EVENT_PKT: + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("HCI Event: %d param length: %d \n", + LookAheadBytes[1], LookAheadBytes[2])); + totalRecvLength = LookAheadBytes[2]; + totalRecvLength += 3; /* add type + event code + length field */ + pktType = HCI_EVENT_TYPE; + break; + case HCI_UART_ACL_PKT: + totalRecvLength = (LookAheadBytes[4] << 8) | LookAheadBytes[3]; + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("HCI ACL: conn:0x%X length: %d \n", + ((LookAheadBytes[2] & 0xF0) << 8) | LookAheadBytes[1], totalRecvLength)); + totalRecvLength += 5; /* add type + connection handle + length field */ + pktType = HCI_ACL_TYPE; + break; + default: + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("**Invalid HCI packet type: %d \n",LookAheadBytes[0])); + status = A_EPROTO; + break; + } + + if (A_FAILED(status)) { + break; + } + + if (pProt->HCIConfig.pHCIPktRecvAlloc != NULL) { + UNLOCK_HCI_RX(pProt); + /* user is using a per-packet allocation callback */ + pPacket = pProt->HCIConfig.pHCIPktRecvAlloc(pProt->HCIConfig.pContext, + pktType, + totalRecvLength); + LOCK_HCI_RX(pProt); + + } else { + HTC_PACKET_QUEUE *pQueue; + /* user is using a refill handler that can refill multiple HTC buffers */ + + /* select buffer queue */ + if (pktType == HCI_ACL_TYPE) { + pQueue = &pProt->HCIACLRecvBuffers; + } else { + pQueue = &pProt->HCIEventBuffers; + } + + if (HTC_QUEUE_EMPTY(pQueue)) { + AR_DEBUG_PRINTF(ATH_DEBUG_RECV, + ("** HCI pkt type: %d has no buffers available calling allocation handler \n", + pktType)); + /* check for refill handler */ + if (pProt->HCIConfig.pHCIPktRecvRefill != NULL) { + recvRefillCalled = TRUE; + UNLOCK_HCI_RX(pProt); + /* call the re-fill handler */ + pProt->HCIConfig.pHCIPktRecvRefill(pProt->HCIConfig.pContext, + pktType, + 0); + LOCK_HCI_RX(pProt); + /* check if we have more buffers */ + pPacket = HTC_PACKET_DEQUEUE(pQueue); + /* fall through */ + } + } else { + pPacket = HTC_PACKET_DEQUEUE(pQueue); + AR_DEBUG_PRINTF(ATH_DEBUG_RECV, + ("HCI pkt type: %d now has %d recv buffers left \n", + pktType, HTC_PACKET_QUEUE_DEPTH(pQueue))); + } + } + + if (NULL == pPacket) { + AR_DEBUG_PRINTF(ATH_DEBUG_RECV, + ("** HCI pkt type: %d has no buffers available stopping recv...\n", pktType)); + /* this is not an error, we simply need to mark that we are waiting for buffers.*/ + pProt->RecvStateFlags |= HCI_RECV_WAIT_BUFFERS; + pProt->WaitBufferType = pktType; + blockRecv = TRUE; + break; + } + + if (totalRecvLength > (int)pPacket->BufferLength) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("** HCI-UART pkt: %d requires %d bytes (%d buffer bytes avail) ! \n", + LookAheadBytes[0], totalRecvLength, pPacket->BufferLength)); + status = A_EINVAL; + break; + } + + } while (FALSE); + + UNLOCK_HCI_RX(pProt); + + /* locks are released, we can go fetch the packet */ + + do { + + if (A_FAILED(status) || (NULL == pPacket)) { + break; + } + + /* do this synchronously, we don't need to be fast here */ + pPacket->Completion = NULL; + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("HCI : getting recv packet len:%d hci-uart-type: %s \n", + totalRecvLength, (LookAheadBytes[0] == HCI_UART_EVENT_PKT) ? "EVENT" : "ACL")); + + status = DevGMboxRead(pProt->pDev, pPacket, totalRecvLength); + + if (A_FAILED(status)) { + break; + } + + if (pPacket->pBuffer[0] != LookAheadBytes[0]) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("** HCI buffer does not contain expected packet type: %d ! \n", + pPacket->pBuffer[0])); + status = A_EPROTO; + break; + } + + if (pPacket->pBuffer[0] == HCI_UART_EVENT_PKT) { + /* validate event header fields */ + if ((pPacket->pBuffer[1] != LookAheadBytes[1]) || + (pPacket->pBuffer[2] != LookAheadBytes[2])) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("** HCI buffer does not match lookahead! \n")); + DebugDumpBytes(LookAheadBytes, 3, "Expected HCI-UART Header"); + DebugDumpBytes(pPacket->pBuffer, 3, "** Bad HCI-UART Header"); + status = A_EPROTO; + break; + } + } else if (pPacket->pBuffer[0] == HCI_UART_ACL_PKT) { + /* validate acl header fields */ + if ((pPacket->pBuffer[1] != LookAheadBytes[1]) || + (pPacket->pBuffer[2] != LookAheadBytes[2]) || + (pPacket->pBuffer[3] != LookAheadBytes[3]) || + (pPacket->pBuffer[4] != LookAheadBytes[4])) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("** HCI buffer does not match lookahead! \n")); + DebugDumpBytes(LookAheadBytes, 5, "Expected HCI-UART Header"); + DebugDumpBytes(pPacket->pBuffer, 5, "** Bad HCI-UART Header"); + status = A_EPROTO; + break; + } + } + + /* adjust buffer to move past packet ID */ + pPacket->pBuffer++; + pPacket->ActualLength = totalRecvLength - 1; + pPacket->Status = A_OK; + /* indicate packet */ + DO_HCI_RECV_INDICATION(pProt,pPacket); + pPacket = NULL; + + /* check if we need to refill recv buffers */ + if ((pProt->HCIConfig.pHCIPktRecvRefill != NULL) && !recvRefillCalled) { + HTC_PACKET_QUEUE *pQueue; + int watermark; + + if (pktType == HCI_ACL_TYPE) { + watermark = pProt->HCIConfig.ACLRecvBufferWaterMark; + pQueue = &pProt->HCIACLRecvBuffers; + } else { + watermark = pProt->HCIConfig.EventRecvBufferWaterMark; + pQueue = &pProt->HCIEventBuffers; + } + + if (HTC_PACKET_QUEUE_DEPTH(pQueue) < watermark) { + AR_DEBUG_PRINTF(ATH_DEBUG_RECV, + ("** HCI pkt type: %d watermark hit (%d) current:%d \n", + pktType, watermark, HTC_PACKET_QUEUE_DEPTH(pQueue))); + /* call the re-fill handler */ + pProt->HCIConfig.pHCIPktRecvRefill(pProt->HCIConfig.pContext, + pktType, + HTC_PACKET_QUEUE_DEPTH(pQueue)); + } + } + + } while (FALSE); + + /* check if we need to disable the reciever */ + if (A_FAILED(status) || blockRecv) { + DevGMboxIRQAction(pProt->pDev, GMBOX_RECV_IRQ_DISABLE, PROC_IO_SYNC); + } + + /* see if we need to recycle the recv buffer */ + if (A_FAILED(status) && (pPacket != NULL)) { + HTC_PACKET_QUEUE queue; + + if (A_EPROTO == status) { + DebugDumpBytes(pPacket->pBuffer, totalRecvLength, "Bad HCI-UART Recv packet"); + } + /* recycle packet */ + HTC_PACKET_RESET_RX(pPacket); + INIT_HTC_PACKET_QUEUE_AND_ADD(&queue,pPacket); + HCI_TransportAddReceivePkts(pProt,&queue); + NotifyTransportFailure(pProt,status); + } + + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("-HCIUartMessagePending \n")); + + return status; +} + +static void HCISendPacketCompletion(void *Context, HTC_PACKET *pPacket) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)Context; + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("+HCISendPacketCompletion (pPacket:0x%X) \n",(A_UINT32)pPacket)); + + if (A_FAILED(pPacket->Status)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,(" Send Packet (0x%X) failed: %d , len:%d \n", + (A_UINT32)pPacket, pPacket->Status, pPacket->ActualLength)); + } + + DO_HCI_SEND_INDICATION(pProt,pPacket); + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("+HCISendPacketCompletion \n")); +} + +static A_STATUS SeekCreditsSynch(GMBOX_PROTO_HCI_UART *pProt) +{ + A_STATUS status = A_OK; + int credits; + int retry = 100; + + while (TRUE) { + credits = 0; + status = DevGMboxReadCreditCounter(pProt->pDev, PROC_IO_SYNC, &credits); + if (A_FAILED(status)) { + break; + } + LOCK_HCI_TX(pProt); + pProt->CreditsAvailable += credits; + pProt->CreditsConsumed -= credits; + if (pProt->CreditsAvailable >= pProt->CreditsCurrentSeek) { + pProt->CreditsCurrentSeek = 0; + UNLOCK_HCI_TX(pProt); + break; + } + UNLOCK_HCI_TX(pProt); + retry--; + if (0 == retry) { + status = A_EBUSY; + break; + } + A_MDELAY(20); + } + + return status; +} + +static A_STATUS HCITrySend(GMBOX_PROTO_HCI_UART *pProt, HTC_PACKET *pPacket, A_BOOL Synchronous) +{ + A_STATUS status = A_OK; + int transferLength; + int creditsRequired, remainder; + A_UINT8 hciUartType; + A_BOOL synchSendComplete = FALSE; + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("+HCITrySend (pPacket:0x%X) %s \n",(A_UINT32)pPacket, + Synchronous ? "SYNC" :"ASYNC")); + + LOCK_HCI_TX(pProt); + + /* increment write processing count on entry */ + pProt->SendProcessCount++; + + do { + + if (pProt->HCIStopped) { + status = A_ECANCELED; + break; + } + + if (pPacket != NULL) { + /* packet was supplied */ + if (Synchronous) { + /* in synchronous mode, the send queue can only hold 1 packet */ + if (!HTC_QUEUE_EMPTY(&pProt->SendQueue)) { + status = A_EBUSY; + A_ASSERT(FALSE); + break; + } + + if (pProt->SendProcessCount > 1) { + /* another thread or task is draining the TX queues */ + status = A_EBUSY; + A_ASSERT(FALSE); + break; + } + + HTC_PACKET_ENQUEUE(&pProt->SendQueue,pPacket); + + } else { + /* see if adding this packet hits the max depth (asynchronous mode only) */ + if ((pProt->HCIConfig.MaxSendQueueDepth > 0) && + ((HTC_PACKET_QUEUE_DEPTH(&pProt->SendQueue) + 1) >= pProt->HCIConfig.MaxSendQueueDepth)) { + AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("HCI Send queue is full, Depth:%d, Max:%d \n", + HTC_PACKET_QUEUE_DEPTH(&pProt->SendQueue), + pProt->HCIConfig.MaxSendQueueDepth)); + /* queue will be full, invoke any callbacks to determine what action to take */ + if (pProt->HCIConfig.pHCISendFull != NULL) { + AR_DEBUG_PRINTF(ATH_DEBUG_SEND, + ("HCI : Calling driver's send full callback.... \n")); + if (pProt->HCIConfig.pHCISendFull(pProt->HCIConfig.pContext, + pPacket) == HCI_SEND_FULL_DROP) { + /* drop it */ + status = A_NO_RESOURCE; + break; + } + } + } + + HTC_PACKET_ENQUEUE(&pProt->SendQueue,pPacket); + } + + } + + if (pProt->SendStateFlags & HCI_SEND_WAIT_CREDITS) { + break; + } + + if (pProt->SendProcessCount > 1) { + /* another thread or task is draining the TX queues */ + break; + } + + /***** beyond this point only 1 thread may enter ******/ + + /* now drain the send queue for transmission as long as we have enough + * credits */ + while (!HTC_QUEUE_EMPTY(&pProt->SendQueue)) { + + pPacket = HTC_PACKET_DEQUEUE(&pProt->SendQueue); + + switch (HCI_GET_PACKET_TYPE(pPacket)) { + case HCI_COMMAND_TYPE: + hciUartType = HCI_UART_COMMAND_PKT; + break; + case HCI_ACL_TYPE: + hciUartType = HCI_UART_ACL_PKT; + break; + default: + status = A_EINVAL; + A_ASSERT(FALSE); + break; + } + + if (A_FAILED(status)) { + break; + } + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: Got head packet:0x%X , Type:%d Length: %d Remaining Queue Depth: %d\n", + (A_UINT32)pPacket, HCI_GET_PACKET_TYPE(pPacket), pPacket->ActualLength, + HTC_PACKET_QUEUE_DEPTH(&pProt->SendQueue))); + + transferLength = 1; /* UART type header is 1 byte */ + transferLength += pPacket->ActualLength; + transferLength = DEV_CALC_SEND_PADDED_LEN(pProt->pDev, transferLength); + + /* figure out how many credits this message requires */ + creditsRequired = transferLength / pProt->CreditSize; + remainder = transferLength % pProt->CreditSize; + + if (remainder) { + creditsRequired++; + } + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: Creds Required:%d Got:%d\n", + creditsRequired, pProt->CreditsAvailable)); + + if (creditsRequired > pProt->CreditsAvailable) { + if (Synchronous) { + /* in synchronous mode we need to seek credits in synchronously */ + pProt->CreditsCurrentSeek = creditsRequired; + UNLOCK_HCI_TX(pProt); + status = SeekCreditsSynch(pProt); + LOCK_HCI_TX(pProt); + if (A_FAILED(status)) { + break; + } + /* fall through and continue processing this send op */ + } else { + /* not enough credits, queue back to the head */ + HTC_PACKET_ENQUEUE_TO_HEAD(&pProt->SendQueue,pPacket); + /* waiting for credits */ + pProt->SendStateFlags |= HCI_SEND_WAIT_CREDITS; + /* provide a hint to reduce attempts to re-send if credits are dribbling back + * this hint is the short fall of credits */ + pProt->CreditsCurrentSeek = creditsRequired; + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: packet:0x%X placed back in queue. head packet needs: %d credits \n", + (A_UINT32)pPacket, pProt->CreditsCurrentSeek)); + pPacket = NULL; + UNLOCK_HCI_TX(pProt); + + /* schedule a credit counter read, our CreditsAvailableCallback callback will be called + * with the result */ + DevGMboxReadCreditCounter(pProt->pDev, PROC_IO_ASYNC, NULL); + + LOCK_HCI_TX(pProt); + break; + } + } + + /* caller guarantees some head room */ + pPacket->pBuffer--; + pPacket->pBuffer[0] = hciUartType; + + pProt->CreditsAvailable -= creditsRequired; + pProt->CreditsConsumed += creditsRequired; + A_ASSERT(pProt->CreditsConsumed <= pProt->CreditsMax); + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("HCI: new credit state: consumed:%d available:%d max:%d\n", + pProt->CreditsConsumed, pProt->CreditsAvailable, pProt->CreditsMax)); + + UNLOCK_HCI_TX(pProt); + + /* write it out */ + if (Synchronous) { + pPacket->Completion = NULL; + pPacket->pContext = NULL; + } else { + pPacket->Completion = HCISendPacketCompletion; + pPacket->pContext = pProt; + } + + status = DevGMboxWrite(pProt->pDev,pPacket,transferLength); + if (Synchronous) { + synchSendComplete = TRUE; + } else { + pPacket = NULL; + } + + LOCK_HCI_TX(pProt); + + } + + } while (FALSE); + + pProt->SendProcessCount--; + A_ASSERT(pProt->SendProcessCount >= 0); + UNLOCK_HCI_TX(pProt); + + if (Synchronous) { + A_ASSERT(pPacket != NULL); + if (A_SUCCESS(status) && (!synchSendComplete)) { + status = A_EBUSY; + A_ASSERT(FALSE); + LOCK_HCI_TX(pProt); + if (pPacket->ListLink.pNext != NULL) { + /* remove from the queue */ + HTC_PACKET_REMOVE(&pProt->SendQueue,pPacket); + } + UNLOCK_HCI_TX(pProt); + } + } else { + if (A_FAILED(status) && (pPacket != NULL)) { + pPacket->Status = status; + DO_HCI_SEND_INDICATION(pProt,pPacket); + } + } + + AR_DEBUG_PRINTF(ATH_DEBUG_SEND,("-HCITrySend: \n")); + return status; +} + +static void FlushSendQueue(GMBOX_PROTO_HCI_UART *pProt) +{ + HTC_PACKET *pPacket; + HTC_PACKET_QUEUE discardQueue; + + INIT_HTC_PACKET_QUEUE(&discardQueue); + + LOCK_HCI_TX(pProt); + + if (!HTC_QUEUE_EMPTY(&pProt->SendQueue)) { + HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&discardQueue,&pProt->SendQueue); + } + + UNLOCK_HCI_TX(pProt); + + /* discard packets */ + while (!HTC_QUEUE_EMPTY(&discardQueue)) { + pPacket = HTC_PACKET_DEQUEUE(&discardQueue); + pPacket->Status = A_ECANCELED; + DO_HCI_SEND_INDICATION(pProt,pPacket); + } + +} + +static void FlushRecvBuffers(GMBOX_PROTO_HCI_UART *pProt) +{ + HTC_PACKET_QUEUE discardQueue; + HTC_PACKET *pPacket; + + INIT_HTC_PACKET_QUEUE(&discardQueue); + + LOCK_HCI_RX(pProt); + /*transfer list items from ACL and event buffer queues to the discard queue */ + if (!HTC_QUEUE_EMPTY(&pProt->HCIACLRecvBuffers)) { + HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&discardQueue,&pProt->HCIACLRecvBuffers); + } + if (!HTC_QUEUE_EMPTY(&pProt->HCIEventBuffers)) { + HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&discardQueue,&pProt->HCIEventBuffers); + } + UNLOCK_HCI_RX(pProt); + + /* now empty the discard queue */ + while (!HTC_QUEUE_EMPTY(&discardQueue)) { + pPacket = HTC_PACKET_DEQUEUE(&discardQueue); + pPacket->Status = A_ECANCELED; + DO_HCI_RECV_INDICATION(pProt,pPacket); + } + +} + +/*** protocol module install entry point ***/ + +A_STATUS GMboxProtocolInstall(AR6K_DEVICE *pDev) +{ + A_STATUS status = A_OK; + GMBOX_PROTO_HCI_UART *pProtocol = NULL; + + do { + + pProtocol = A_MALLOC(sizeof(GMBOX_PROTO_HCI_UART)); + + if (NULL == pProtocol) { + status = A_NO_MEMORY; + break; + } + + A_MEMZERO(pProtocol, sizeof(*pProtocol)); + pProtocol->pDev = pDev; + INIT_HTC_PACKET_QUEUE(&pProtocol->SendQueue); + INIT_HTC_PACKET_QUEUE(&pProtocol->HCIACLRecvBuffers); + INIT_HTC_PACKET_QUEUE(&pProtocol->HCIEventBuffers); + A_MUTEX_INIT(&pProtocol->HCIRxLock); + A_MUTEX_INIT(&pProtocol->HCITxLock); + + } while (FALSE); + + if (A_SUCCESS(status)) { + LOCK_AR6K(pDev); + DEV_GMBOX_SET_PROTOCOL(pDev, + HCIUartMessagePending, + CreditsAvailableCallback, + FailureCallback, + StateDumpCallback, + pProtocol); + UNLOCK_AR6K(pDev); + } else { + if (pProtocol != NULL) { + HCIUartCleanup(pProtocol); + } + } + + return status; +} + +/*** protocol module uninstall entry point ***/ +void GMboxProtocolUninstall(AR6K_DEVICE *pDev) +{ + GMBOX_PROTO_HCI_UART *pProtocol = (GMBOX_PROTO_HCI_UART *)DEV_GMBOX_GET_PROTOCOL(pDev); + + if (pProtocol != NULL) { + + /* notify anyone attached */ + if (pProtocol->HCIAttached) { + A_ASSERT(pProtocol->HCIConfig.TransportRemoved != NULL); + pProtocol->HCIConfig.TransportRemoved(pProtocol->HCIConfig.pContext); + pProtocol->HCIAttached = FALSE; + } + + HCIUartCleanup(pProtocol); + DEV_GMBOX_SET_PROTOCOL(pDev,NULL,NULL,NULL,NULL,NULL); + } + +} + +static A_STATUS NotifyTransportReady(GMBOX_PROTO_HCI_UART *pProt) +{ + HCI_TRANSPORT_PROPERTIES props; + A_STATUS status = A_OK; + + do { + + A_MEMZERO(&props,sizeof(props)); + + /* HCI UART only needs one extra byte at the head to indicate the packet TYPE */ + props.HeadRoom = 1; + props.TailRoom = 0; + props.IOBlockPad = pProt->pDev->BlockSize; + if (pProt->HCIAttached) { + AR_DEBUG_PRINTF(ATH_DEBUG_ANY,("HCI: notifying attached client to transport... \n")); + A_ASSERT(pProt->HCIConfig.TransportReady != NULL); + status = pProt->HCIConfig.TransportReady(pProt, + &props, + pProt->HCIConfig.pContext); + } + + } while (FALSE); + + return status; +} + +/*********** HCI UART protocol implementation ************************************************/ + +HCI_TRANSPORT_HANDLE HCI_TransportAttach(void *HTCHandle, HCI_TRANSPORT_CONFIG_INFO *pInfo) +{ + GMBOX_PROTO_HCI_UART *pProtocol = NULL; + AR6K_DEVICE *pDev; + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("+HCI_TransportAttach \n")); + + pDev = HTCGetAR6KDevice(HTCHandle); + + LOCK_AR6K(pDev); + + do { + + pProtocol = (GMBOX_PROTO_HCI_UART *)DEV_GMBOX_GET_PROTOCOL(pDev); + + if (NULL == pProtocol) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("GMBOX protocol not installed! \n")); + break; + } + + if (pProtocol->HCIAttached) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("GMBOX protocol already attached! \n")); + break; + } + + A_MEMCPY(&pProtocol->HCIConfig, pInfo, sizeof(HCI_TRANSPORT_CONFIG_INFO)); + + A_ASSERT(pProtocol->HCIConfig.pHCIPktRecv != NULL); + A_ASSERT(pProtocol->HCIConfig.pHCISendComplete != NULL); + + pProtocol->HCIAttached = TRUE; + + } while (FALSE); + + UNLOCK_AR6K(pDev); + + if (pProtocol != NULL) { + /* TODO ... should we use a worker? */ + NotifyTransportReady(pProtocol); + } + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("-HCI_TransportAttach (0x%X) \n",(A_UINT32)pProtocol)); + return (HCI_TRANSPORT_HANDLE)pProtocol; +} + +void HCI_TransportDetach(HCI_TRANSPORT_HANDLE HciTrans) +{ + GMBOX_PROTO_HCI_UART *pProtocol = (GMBOX_PROTO_HCI_UART *)HciTrans; + AR6K_DEVICE *pDev = pProtocol->pDev; + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("+HCI_TransportDetach \n")); + + LOCK_AR6K(pDev); + if (!pProtocol->HCIAttached) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("GMBOX protocol not attached! \n")); + UNLOCK_AR6K(pDev); + return; + } + pProtocol->HCIAttached = FALSE; + UNLOCK_AR6K(pDev); + + HCI_TransportStop(HciTrans); + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("-HCI_TransportAttach \n")); +} + +A_STATUS HCI_TransportAddReceivePkts(HCI_TRANSPORT_HANDLE HciTrans, HTC_PACKET_QUEUE *pQueue) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + A_STATUS status = A_OK; + A_BOOL unblockRecv = FALSE; + HTC_PACKET *pPacket; + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("+HCI_TransportAddReceivePkt \n")); + + LOCK_HCI_RX(pProt); + + do { + + if (pProt->HCIStopped) { + status = A_ECANCELED; + break; + } + + pPacket = HTC_GET_PKT_AT_HEAD(pQueue); + + if (NULL == pPacket) { + status = A_EINVAL; + break; + } + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,(" HCI recv packet added, type :%d, len:%d num:%d \n", + HCI_GET_PACKET_TYPE(pPacket), pPacket->BufferLength, HTC_PACKET_QUEUE_DEPTH(pQueue))); + + if (HCI_GET_PACKET_TYPE(pPacket) == HCI_EVENT_TYPE) { + HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&pProt->HCIEventBuffers, pQueue); + } else if (HCI_GET_PACKET_TYPE(pPacket) == HCI_ACL_TYPE) { + HTC_PACKET_QUEUE_TRANSFER_TO_TAIL(&pProt->HCIACLRecvBuffers, pQueue); + } else { + status = A_EINVAL; + break; + } + + if (pProt->RecvStateFlags & HCI_RECV_WAIT_BUFFERS) { + if (pProt->WaitBufferType == HCI_GET_PACKET_TYPE(pPacket)) { + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,(" HCI recv was blocked on packet type :%d, unblocking.. \n", + pProt->WaitBufferType)); + pProt->RecvStateFlags &= ~HCI_RECV_WAIT_BUFFERS; + pProt->WaitBufferType = HCI_PACKET_INVALID; + unblockRecv = TRUE; + } + } + + } while (FALSE); + + UNLOCK_HCI_RX(pProt); + + if (A_FAILED(status)) { + while (!HTC_QUEUE_EMPTY(pQueue)) { + pPacket = HTC_PACKET_DEQUEUE(pQueue); + pPacket->Status = A_ECANCELED; + DO_HCI_RECV_INDICATION(pProt,pPacket); + } + } + + if (unblockRecv) { + DevGMboxIRQAction(pProt->pDev, GMBOX_RECV_IRQ_ENABLE, PROC_IO_ASYNC); + } + + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("-HCI_TransportAddReceivePkt \n")); + + return A_OK; +} + +A_STATUS HCI_TransportSendPkt(HCI_TRANSPORT_HANDLE HciTrans, HTC_PACKET *pPacket, A_BOOL Synchronous) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + + return HCITrySend(pProt,pPacket,Synchronous); +} + +void HCI_TransportStop(HCI_TRANSPORT_HANDLE HciTrans) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("+HCI_TransportStop \n")); + + LOCK_AR6K(pProt->pDev); + if (pProt->HCIStopped) { + UNLOCK_AR6K(pProt->pDev); + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("-HCI_TransportStop \n")); + return; + } + pProt->HCIStopped = TRUE; + UNLOCK_AR6K(pProt->pDev); + + /* disable interrupts */ + DevGMboxIRQAction(pProt->pDev, GMBOX_DISABLE_ALL, PROC_IO_SYNC); + FlushSendQueue(pProt); + FlushRecvBuffers(pProt); + + /* signal bridge side to power down BT */ + DevGMboxSetTargetInterrupt(pProt->pDev, MBOX_SIG_HCI_BRIDGE_BT_OFF, BTOFF_TIMEOUT_MS); + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("-HCI_TransportStop \n")); +} + +A_STATUS HCI_TransportStart(HCI_TRANSPORT_HANDLE HciTrans) +{ + A_STATUS status; + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("+HCI_TransportStart \n")); + + /* set stopped in case we have a problem in starting */ + pProt->HCIStopped = TRUE; + + do { + + status = InitTxCreditState(pProt); + + if (A_FAILED(status)) { + break; + } + + status = DevGMboxIRQAction(pProt->pDev, GMBOX_ERRORS_IRQ_ENABLE, PROC_IO_SYNC); + + if (A_FAILED(status)) { + break; + } + /* enable recv */ + status = DevGMboxIRQAction(pProt->pDev, GMBOX_RECV_IRQ_ENABLE, PROC_IO_SYNC); + + if (A_FAILED(status)) { + break; + } + /* signal bridge side to power up BT */ + status = DevGMboxSetTargetInterrupt(pProt->pDev, MBOX_SIG_HCI_BRIDGE_BT_ON, BTON_TIMEOUT_MS); + + if (A_FAILED(status)) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("HCI_TransportStart : Failed to trigger BT ON \n")); + break; + } + + /* we made it */ + pProt->HCIStopped = FALSE; + + } while (FALSE); + + AR_DEBUG_PRINTF(ATH_DEBUG_TRC,("-HCI_TransportStart \n")); + + return status; +} + +A_STATUS HCI_TransportEnableDisableAsyncRecv(HCI_TRANSPORT_HANDLE HciTrans, A_BOOL Enable) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + return DevGMboxIRQAction(pProt->pDev, + Enable ? GMBOX_RECV_IRQ_ENABLE : GMBOX_RECV_IRQ_DISABLE, + PROC_IO_SYNC); + +} + +A_STATUS HCI_TransportRecvHCIEventSync(HCI_TRANSPORT_HANDLE HciTrans, + HTC_PACKET *pPacket, + int MaxPollMS) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + A_STATUS status = A_OK; + A_UINT8 lookAhead[8]; + int bytes; + int totalRecvLength; + + MaxPollMS = MaxPollMS / 16; + + if (MaxPollMS < 2) { + MaxPollMS = 2; + } + + while (MaxPollMS) { + + bytes = sizeof(lookAhead); + status = DevGMboxRecvLookAheadPeek(pProt->pDev,lookAhead,&bytes); + if (A_FAILED(status)) { + break; + } + + if (bytes < 3) { + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("HCI recv poll got bytes: %d, retry : %d \n", + bytes, MaxPollMS)); + A_MDELAY(16); + MaxPollMS--; + continue; + } + + totalRecvLength = 0; + switch (lookAhead[0]) { + case HCI_UART_EVENT_PKT: + AR_DEBUG_PRINTF(ATH_DEBUG_RECV,("HCI Event: %d param length: %d \n", + lookAhead[1], lookAhead[2])); + totalRecvLength = lookAhead[2]; + totalRecvLength += 3; /* add type + event code + length field */ + break; + default: + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("**Invalid HCI packet type: %d \n",lookAhead[0])); + status = A_EPROTO; + break; + } + + if (A_FAILED(status)) { + break; + } + + pPacket->Completion = NULL; + status = DevGMboxRead(pProt->pDev,pPacket,totalRecvLength); + if (A_FAILED(status)) { + break; + } + + pPacket->pBuffer++; + pPacket->ActualLength = totalRecvLength - 1; + pPacket->Status = A_OK; + break; + } + + if (MaxPollMS == 0) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR,("HCI recv poll timeout! \n")); + status = A_ERROR; + } + + return status; +} + +#define LSB_SCRATCH_IDX 4 +#define MSB_SCRATCH_IDX 5 +A_STATUS HCI_TransportSetBaudRate(HCI_TRANSPORT_HANDLE HciTrans, A_UINT32 Baud) +{ + GMBOX_PROTO_HCI_UART *pProt = (GMBOX_PROTO_HCI_UART *)HciTrans; + HIF_DEVICE *pHIFDevice = (HIF_DEVICE *)(pProt->pDev->HIFDevice); + A_UINT32 scaledBaud, scratchAddr; + A_STATUS status = A_OK; + + /* Divide the desired baud rate by 100 + * Store the LSB in the local scratch register 4 and the MSB in the local + * scratch register 5 for the target to read + */ + scratchAddr = MBOX_BASE_ADDRESS | (LOCAL_SCRATCH_ADDRESS + 4 * LSB_SCRATCH_IDX); + scaledBaud = (Baud / 100) & LOCAL_SCRATCH_VALUE_MASK; + status = ar6000_WriteRegDiag(pHIFDevice, &scratchAddr, &scaledBaud); + scratchAddr = MBOX_BASE_ADDRESS | (LOCAL_SCRATCH_ADDRESS + 4 * MSB_SCRATCH_IDX); + scaledBaud = ((Baud / 100) >> (LOCAL_SCRATCH_VALUE_MSB+1)) & LOCAL_SCRATCH_VALUE_MASK; + status |= ar6000_WriteRegDiag(pHIFDevice, &scratchAddr, &scaledBaud); + if (A_OK != status) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to set up baud rate in scratch register!")); + return status; + } + + /* Now interrupt the target to tell it about the baud rate */ + status = DevGMboxSetTargetInterrupt(pProt->pDev, MBOX_SIG_HCI_BRIDGE_BAUD_SET, BAUD_TIMEOUT_MS); + if (A_OK != status) { + AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("Failed to tell target to change baud rate!")); + } + + return status; +} + +#endif //ATH_AR6K_ENABLE_GMBOX + |