//------------------------------------------------------------------------------ // ISC License (ISC) // // Copyright (c) 2007-2010, The Linux Foundation // All rights reserved. // Software was previously licensed under ISC license by Qualcomm Atheros, Inc. // // // Permission to use, copy, modify, and/or distribute this software for any // purpose with or without fee is hereby granted, provided that the above // copyright notice and this permission notice appear in all copies. // // THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES // WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF // MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR // ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES // WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN // ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF // OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. // // //------------------------------------------------------------------------------ //============================================================================== // AR6K device layer that handles register level I/O // // Author(s): ="Atheros" //============================================================================== #ifndef AR6K_H_ #define AR6K_H_ #include "hci_transport_api.h" #include "../htc_debug.h" #define AR6K_MAILBOXES 4 /* HTC runs over mailbox 0 */ #define HTC_MAILBOX 0 #define AR6K_TARGET_DEBUG_INTR_MASK 0x01 #define OTHER_INTS_ENABLED (INT_STATUS_ENABLE_ERROR_MASK | \ INT_STATUS_ENABLE_CPU_MASK | \ INT_STATUS_ENABLE_COUNTER_MASK) //#define MBOXHW_UNIT_TEST 1 #include "athstartpack.h" typedef PREPACK struct _AR6K_IRQ_PROC_REGISTERS { A_UINT8 host_int_status; A_UINT8 cpu_int_status; A_UINT8 error_int_status; A_UINT8 counter_int_status; A_UINT8 mbox_frame; A_UINT8 rx_lookahead_valid; A_UINT8 host_int_status2; A_UINT8 gmbox_rx_avail; A_UINT32 rx_lookahead[2]; A_UINT32 rx_gmbox_lookahead_alias[2]; } POSTPACK AR6K_IRQ_PROC_REGISTERS; #define AR6K_IRQ_PROC_REGS_SIZE sizeof(AR6K_IRQ_PROC_REGISTERS) typedef PREPACK struct _AR6K_IRQ_ENABLE_REGISTERS { A_UINT8 int_status_enable; A_UINT8 cpu_int_status_enable; A_UINT8 error_status_enable; A_UINT8 counter_int_status_enable; } POSTPACK AR6K_IRQ_ENABLE_REGISTERS; typedef PREPACK struct _AR6K_GMBOX_CTRL_REGISTERS { A_UINT8 int_status_enable; } POSTPACK AR6K_GMBOX_CTRL_REGISTERS; #include "athendpack.h" #define AR6K_IRQ_ENABLE_REGS_SIZE sizeof(AR6K_IRQ_ENABLE_REGISTERS) #define AR6K_REG_IO_BUFFER_SIZE 32 #define AR6K_MAX_REG_IO_BUFFERS 8 #define FROM_DMA_BUFFER TRUE #define TO_DMA_BUFFER FALSE #define AR6K_SCATTER_ENTRIES_PER_REQ 16 #define AR6K_MAX_TRANSFER_SIZE_PER_SCATTER 16*1024 #define AR6K_SCATTER_REQS 4 #define AR6K_LEGACY_MAX_WRITE_LENGTH 2048 #ifndef A_CACHE_LINE_PAD #define A_CACHE_LINE_PAD 128 #endif /* buffers for ASYNC I/O */ typedef struct AR6K_ASYNC_REG_IO_BUFFER { HTC_PACKET HtcPacket; /* we use an HTC packet as a wrapper for our async register-based I/O */ A_UINT8 _Pad1[A_CACHE_LINE_PAD]; A_UINT8 Buffer[AR6K_REG_IO_BUFFER_SIZE]; /* cache-line safe with pads around */ A_UINT8 _Pad2[A_CACHE_LINE_PAD]; } AR6K_ASYNC_REG_IO_BUFFER; typedef struct _AR6K_GMBOX_INFO { void *pProtocolContext; A_STATUS (*pMessagePendingCallBack)(void *pContext, A_UINT8 LookAheadBytes[], int ValidBytes); A_STATUS (*pCreditsPendingCallback)(void *pContext, int NumCredits, A_BOOL CreditIRQEnabled); void (*pTargetFailureCallback)(void *pContext, A_STATUS Status); void (*pStateDumpCallback)(void *pContext); A_BOOL CreditCountIRQEnabled; } AR6K_GMBOX_INFO; typedef struct _AR6K_DEVICE { A_MUTEX_T Lock; A_UINT8 _Pad1[A_CACHE_LINE_PAD]; AR6K_IRQ_PROC_REGISTERS IrqProcRegisters; /* cache-line safe with pads around */ A_UINT8 _Pad2[A_CACHE_LINE_PAD]; AR6K_IRQ_ENABLE_REGISTERS IrqEnableRegisters; /* cache-line safe with pads around */ A_UINT8 _Pad3[A_CACHE_LINE_PAD]; void *HIFDevice; A_UINT32 BlockSize; A_UINT32 BlockMask; HIF_DEVICE_MBOX_INFO MailBoxInfo; HIF_PENDING_EVENTS_FUNC GetPendingEventsFunc; void *HTCContext; HTC_PACKET_QUEUE RegisterIOList; AR6K_ASYNC_REG_IO_BUFFER RegIOBuffers[AR6K_MAX_REG_IO_BUFFERS]; void (*TargetFailureCallback)(void *Context); A_STATUS (*MessagePendingCallback)(void *Context, A_UINT32 LookAheads[], int NumLookAheads, A_BOOL *pAsyncProc, int *pNumPktsFetched); HIF_DEVICE_IRQ_PROCESSING_MODE HifIRQProcessingMode; HIF_MASK_UNMASK_RECV_EVENT HifMaskUmaskRecvEvent; A_BOOL HifAttached; HIF_DEVICE_IRQ_YIELD_PARAMS HifIRQYieldParams; A_BOOL DSRCanYield; int CurrentDSRRecvCount; HIF_DEVICE_SCATTER_SUPPORT_INFO HifScatterInfo; DL_LIST ScatterReqHead; A_BOOL ScatterIsVirtual; int MaxRecvBundleSize; int MaxSendBundleSize; AR6K_GMBOX_INFO GMboxInfo; A_BOOL GMboxEnabled; AR6K_GMBOX_CTRL_REGISTERS GMboxControlRegisters; int RecheckIRQStatusCnt; } AR6K_DEVICE; #define LOCK_AR6K(p) A_MUTEX_LOCK(&(p)->Lock); #define UNLOCK_AR6K(p) A_MUTEX_UNLOCK(&(p)->Lock); #define REF_IRQ_STATUS_RECHECK(p) (p)->RecheckIRQStatusCnt = 1 /* note: no need to lock this, it only gets set */ A_STATUS DevSetup(AR6K_DEVICE *pDev); void DevCleanup(AR6K_DEVICE *pDev); A_STATUS DevUnmaskInterrupts(AR6K_DEVICE *pDev); A_STATUS DevMaskInterrupts(AR6K_DEVICE *pDev); A_STATUS DevPollMboxMsgRecv(AR6K_DEVICE *pDev, A_UINT32 *pLookAhead, int TimeoutMS); A_STATUS DevRWCompletionHandler(void *context, A_STATUS status); A_STATUS DevDsrHandler(void *context); A_STATUS DevCheckPendingRecvMsgsAsync(void *context); void DevAsyncIrqProcessComplete(AR6K_DEVICE *pDev); void DevDumpRegisters(AR6K_DEVICE *pDev, AR6K_IRQ_PROC_REGISTERS *pIrqProcRegs, AR6K_IRQ_ENABLE_REGISTERS *pIrqEnableRegs); #define DEV_STOP_RECV_ASYNC TRUE #define DEV_STOP_RECV_SYNC FALSE #define DEV_ENABLE_RECV_ASYNC TRUE #define DEV_ENABLE_RECV_SYNC FALSE A_STATUS DevStopRecv(AR6K_DEVICE *pDev, A_BOOL ASyncMode); A_STATUS DevEnableRecv(AR6K_DEVICE *pDev, A_BOOL ASyncMode); A_STATUS DevEnableInterrupts(AR6K_DEVICE *pDev); A_STATUS DevDisableInterrupts(AR6K_DEVICE *pDev); A_STATUS DevWaitForPendingRecv(AR6K_DEVICE *pDev,A_UINT32 TimeoutInMs,A_BOOL *pbIsRecvPending); #define DEV_CALC_RECV_PADDED_LEN(pDev, length) (((length) + (pDev)->BlockMask) & (~((pDev)->BlockMask))) #define DEV_CALC_SEND_PADDED_LEN(pDev, length) DEV_CALC_RECV_PADDED_LEN(pDev,length) #define DEV_IS_LEN_BLOCK_ALIGNED(pDev, length) (((length) % (pDev)->BlockSize) == 0) static INLINE A_STATUS DevSendPacket(AR6K_DEVICE *pDev, HTC_PACKET *pPacket, A_UINT32 SendLength) { A_UINT32 paddedLength; A_BOOL sync = (pPacket->Completion == NULL) ? TRUE : FALSE; A_STATUS status; /* adjust the length to be a multiple of block size if appropriate */ paddedLength = DEV_CALC_SEND_PADDED_LEN(pDev, SendLength); #if 0 if (paddedLength > pPacket->BufferLength) { A_ASSERT(FALSE); if (pPacket->Completion != NULL) { COMPLETE_HTC_PACKET(pPacket,A_EINVAL); return A_OK; } return A_EINVAL; } #endif AR_DEBUG_PRINTF(ATH_DEBUG_SEND, ("DevSendPacket, Padded Length: %d Mbox:0x%X (mode:%s)\n", paddedLength, pDev->MailBoxInfo.MboxAddresses[HTC_MAILBOX], sync ? "SYNC" : "ASYNC")); status = HIFReadWrite(pDev->HIFDevice, pDev->MailBoxInfo.MboxAddresses[HTC_MAILBOX], pPacket->pBuffer, paddedLength, /* the padded length */ sync ? HIF_WR_SYNC_BLOCK_INC : HIF_WR_ASYNC_BLOCK_INC, sync ? NULL : pPacket); /* pass the packet as the context to the HIF request */ if (sync) { pPacket->Status = status; } else { if (status == A_PENDING) { status = A_OK; } } return status; } static INLINE A_STATUS DevRecvPacket(AR6K_DEVICE *pDev, HTC_PACKET *pPacket, A_UINT32 RecvLength) { A_UINT32 paddedLength; A_STATUS status; A_BOOL sync = (pPacket->Completion == NULL) ? TRUE : FALSE; /* adjust the length to be a multiple of block size if appropriate */ paddedLength = DEV_CALC_RECV_PADDED_LEN(pDev, RecvLength); if (paddedLength > pPacket->BufferLength) { A_ASSERT(FALSE); AR_DEBUG_PRINTF(ATH_DEBUG_ERR, ("DevRecvPacket, Not enough space for padlen:%d recvlen:%d bufferlen:%d \n", paddedLength,RecvLength,pPacket->BufferLength)); if (pPacket->Completion != NULL) { COMPLETE_HTC_PACKET(pPacket,A_EINVAL); return A_OK; } return A_EINVAL; } AR_DEBUG_PRINTF(ATH_DEBUG_RECV, ("DevRecvPacket (0x%lX : hdr:0x%X) Padded Length: %d Mbox:0x%X (mode:%s)\n", (unsigned long)pPacket, pPacket->PktInfo.AsRx.ExpectedHdr, paddedLength, pDev->MailBoxInfo.MboxAddresses[HTC_MAILBOX], sync ? "SYNC" : "ASYNC")); status = HIFReadWrite(pDev->HIFDevice, pDev->MailBoxInfo.MboxAddresses[HTC_MAILBOX], pPacket->pBuffer, paddedLength, sync ? HIF_RD_SYNC_BLOCK_FIX : HIF_RD_ASYNC_BLOCK_FIX, sync ? NULL : pPacket); /* pass the packet as the context to the HIF request */ if (sync) { pPacket->Status = status; } return status; } #define DEV_CHECK_RECV_YIELD(pDev) \ ((pDev)->CurrentDSRRecvCount >= (pDev)->HifIRQYieldParams.RecvPacketYieldCount) #define IS_DEV_IRQ_PROC_SYNC_MODE(pDev) (HIF_DEVICE_IRQ_SYNC_ONLY == (pDev)->HifIRQProcessingMode) #define IS_DEV_IRQ_PROCESSING_ASYNC_ALLOWED(pDev) ((pDev)->HifIRQProcessingMode != HIF_DEVICE_IRQ_SYNC_ONLY) /**************************************************/ /****** Scatter Function and Definitions * * */ A_STATUS DevCopyScatterListToFromDMABuffer(HIF_SCATTER_REQ *pReq, A_BOOL FromDMA); /* copy any READ data back into scatter list */ #define DEV_FINISH_SCATTER_OPERATION(pR) \ if (A_SUCCESS((pR)->CompletionStatus) && \ !((pR)->Request & HIF_WRITE) && \ ((pR)->ScatterMethod == HIF_SCATTER_DMA_BOUNCE)) { \ (pR)->CompletionStatus = DevCopyScatterListToFromDMABuffer((pR),FROM_DMA_BUFFER); \ } /* copy any WRITE data to bounce buffer */ static INLINE A_STATUS DEV_PREPARE_SCATTER_OPERATION(HIF_SCATTER_REQ *pReq) { if ((pReq->Request & HIF_WRITE) && (pReq->ScatterMethod == HIF_SCATTER_DMA_BOUNCE)) { return DevCopyScatterListToFromDMABuffer(pReq,TO_DMA_BUFFER); } else { return A_OK; } } A_STATUS DevSetupMsgBundling(AR6K_DEVICE *pDev, int MaxMsgsPerTransfer); A_STATUS DevCleanupMsgBundling(AR6K_DEVICE *pDev); #define DEV_GET_MAX_MSG_PER_BUNDLE(pDev) (pDev)->HifScatterInfo.MaxScatterEntries #define DEV_GET_MAX_BUNDLE_LENGTH(pDev) (pDev)->HifScatterInfo.MaxTransferSizePerScatterReq #define DEV_ALLOC_SCATTER_REQ(pDev) \ (pDev)->HifScatterInfo.pAllocateReqFunc((pDev)->ScatterIsVirtual ? (pDev) : (pDev)->HIFDevice) #define DEV_FREE_SCATTER_REQ(pDev,pR) \ (pDev)->HifScatterInfo.pFreeReqFunc((pDev)->ScatterIsVirtual ? (pDev) : (pDev)->HIFDevice,(pR)) #define DEV_GET_MAX_BUNDLE_RECV_LENGTH(pDev) (pDev)->MaxRecvBundleSize #define DEV_GET_MAX_BUNDLE_SEND_LENGTH(pDev) (pDev)->MaxSendBundleSize #define DEV_SCATTER_READ TRUE #define DEV_SCATTER_WRITE FALSE #define DEV_SCATTER_ASYNC TRUE #define DEV_SCATTER_SYNC FALSE A_STATUS DevSubmitScatterRequest(AR6K_DEVICE *pDev, HIF_SCATTER_REQ *pScatterReq, A_BOOL Read, A_BOOL Async); #ifdef MBOXHW_UNIT_TEST A_STATUS DoMboxHWTest(AR6K_DEVICE *pDev); #endif /* completely virtual */ typedef struct _DEV_SCATTER_DMA_VIRTUAL_INFO { A_UINT8 *pVirtDmaBuffer; /* dma-able buffer - CPU accessible address */ A_UINT8 DataArea[1]; /* start of data area */ } DEV_SCATTER_DMA_VIRTUAL_INFO; void DumpAR6KDevState(AR6K_DEVICE *pDev); /**************************************************/ /****** GMBOX functions and definitions * * */ #ifdef ATH_AR6K_ENABLE_GMBOX void DevCleanupGMbox(AR6K_DEVICE *pDev); A_STATUS DevSetupGMbox(AR6K_DEVICE *pDev); A_STATUS DevCheckGMboxInterrupts(AR6K_DEVICE *pDev); void DevNotifyGMboxTargetFailure(AR6K_DEVICE *pDev); #else /* compiled out */ #define DevCleanupGMbox(p) #define DevCheckGMboxInterrupts(p) A_OK #define DevNotifyGMboxTargetFailure(p) static INLINE A_STATUS DevSetupGMbox(AR6K_DEVICE *pDev) { pDev->GMboxEnabled = FALSE; return A_OK; } #endif #ifdef ATH_AR6K_ENABLE_GMBOX /* GMBOX protocol modules must expose each of these internal APIs */ HCI_TRANSPORT_HANDLE GMboxAttachProtocol(AR6K_DEVICE *pDev, HCI_TRANSPORT_CONFIG_INFO *pInfo); A_STATUS GMboxProtocolInstall(AR6K_DEVICE *pDev); void GMboxProtocolUninstall(AR6K_DEVICE *pDev); /* API used by GMBOX protocol modules */ AR6K_DEVICE *HTCGetAR6KDevice(void *HTCHandle); #define DEV_GMBOX_SET_PROTOCOL(pDev,recv_callback,credits_pending,failure,statedump,context) \ { \ (pDev)->GMboxInfo.pProtocolContext = (context); \ (pDev)->GMboxInfo.pMessagePendingCallBack = (recv_callback); \ (pDev)->GMboxInfo.pCreditsPendingCallback = (credits_pending); \ (pDev)->GMboxInfo.pTargetFailureCallback = (failure); \ (pDev)->GMboxInfo.pStateDumpCallback = (statedump); \ } #define DEV_GMBOX_GET_PROTOCOL(pDev) (pDev)->GMboxInfo.pProtocolContext A_STATUS DevGMboxWrite(AR6K_DEVICE *pDev, HTC_PACKET *pPacket, A_UINT32 WriteLength); A_STATUS DevGMboxRead(AR6K_DEVICE *pDev, HTC_PACKET *pPacket, A_UINT32 ReadLength); #define PROC_IO_ASYNC TRUE #define PROC_IO_SYNC FALSE typedef enum GMBOX_IRQ_ACTION_TYPE { GMBOX_ACTION_NONE = 0, GMBOX_DISABLE_ALL, GMBOX_ERRORS_IRQ_ENABLE, GMBOX_RECV_IRQ_ENABLE, GMBOX_RECV_IRQ_DISABLE, GMBOX_CREDIT_IRQ_ENABLE, GMBOX_CREDIT_IRQ_DISABLE, } GMBOX_IRQ_ACTION_TYPE; A_STATUS DevGMboxIRQAction(AR6K_DEVICE *pDev, GMBOX_IRQ_ACTION_TYPE, A_BOOL AsyncMode); A_STATUS DevGMboxReadCreditCounter(AR6K_DEVICE *pDev, A_BOOL AsyncMode, int *pCredits); A_STATUS DevGMboxReadCreditSize(AR6K_DEVICE *pDev, int *pCreditSize); A_STATUS DevGMboxRecvLookAheadPeek(AR6K_DEVICE *pDev, A_UINT8 *pLookAheadBuffer, int *pLookAheadBytes); A_STATUS DevGMboxSetTargetInterrupt(AR6K_DEVICE *pDev, int SignalNumber, int AckTimeoutMS); #endif #endif /*AR6K_H_*/