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/*
*
* Copyright (c) 2007 Atheros Communications Inc.
* 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.
*
*
*
*/
#ifndef _HTC_INTERNAL_H_
#define _HTC_INTERNAL_H_
/* for debugging, uncomment this to capture the last frame header, on frame header
* processing errors, the last frame header is dump for comparison */
//#define HTC_CAPTURE_LAST_FRAME
//#define HTC_EP_STAT_PROFILING
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/* Header files */
#include "a_config.h"
#include "athdefs.h"
#include "a_types.h"
#include "a_osapi.h"
#include "a_debug.h"
#include "htc.h"
#include "htc_api.h"
#include "bmi_msg.h"
#include "hif.h"
#include "ar6k.h"
/* HTC operational parameters */
#define HTC_TARGET_RESPONSE_TIMEOUT 2000 /* in ms */
#define HTC_TARGET_DEBUG_INTR_MASK 0x01
#define HTC_TARGET_CREDIT_INTR_MASK 0xF0
typedef struct _HTC_ENDPOINT {
HTC_SERVICE_ID ServiceID; /* service ID this endpoint is bound to
non-zero value means this endpoint is in use */
HTC_PACKET_QUEUE TxQueue; /* HTC frame buffer TX queue */
HTC_PACKET_QUEUE RxBuffers; /* HTC frame buffer RX list */
HTC_ENDPOINT_CREDIT_DIST CreditDist; /* credit distribution structure (exposed to driver layer) */
HTC_EP_CALLBACKS EpCallBacks; /* callbacks associated with this endpoint */
int MaxTxQueueDepth; /* max depth of the TX queue before we need to
call driver's full handler */
int CurrentTxQueueDepth; /* current TX queue depth */
int MaxMsgLength; /* max length of endpoint message */
#ifdef HTC_EP_STAT_PROFILING
HTC_ENDPOINT_STATS EndPointStats; /* endpoint statistics */
#endif
} HTC_ENDPOINT;
#ifdef HTC_EP_STAT_PROFILING
#define INC_HTC_EP_STAT(p,stat,count) (p)->EndPointStats.stat += (count);
#else
#define INC_HTC_EP_STAT(p,stat,count)
#endif
#define HTC_SERVICE_TX_PACKET_TAG HTC_TX_PACKET_TAG_INTERNAL
#define NUM_CONTROL_BUFFERS 8
#define NUM_CONTROL_TX_BUFFERS 2
#define NUM_CONTROL_RX_BUFFERS (NUM_CONTROL_BUFFERS - NUM_CONTROL_TX_BUFFERS)
#define HTC_CONTROL_BUFFER_SIZE (HTC_MAX_CONTROL_MESSAGE_LENGTH + HTC_HDR_LENGTH)
typedef struct HTC_CONTROL_BUFFER {
HTC_PACKET HtcPacket;
A_UINT8 Buffer[HTC_CONTROL_BUFFER_SIZE];
} HTC_CONTROL_BUFFER;
/* our HTC target state */
typedef struct _HTC_TARGET {
HTC_ENDPOINT EndPoint[ENDPOINT_MAX];
HTC_CONTROL_BUFFER HTCControlBuffers[NUM_CONTROL_BUFFERS];
HTC_ENDPOINT_CREDIT_DIST *EpCreditDistributionListHead;
HTC_PACKET_QUEUE ControlBufferTXFreeList;
HTC_PACKET_QUEUE ControlBufferRXFreeList;
HTC_CREDIT_DIST_CALLBACK DistributeCredits;
HTC_CREDIT_INIT_CALLBACK InitCredits;
void *pCredDistContext;
int TargetCredits;
int TargetCreditSize;
A_MUTEX_T HTCLock;
A_MUTEX_T HTCRxLock;
A_MUTEX_T HTCTxLock;
AR6K_DEVICE Device; /* AR6K - specific state */
A_UINT32 HTCStateFlags;
HTC_ENDPOINT_ID EpWaitingForBuffers;
A_BOOL TargetFailure;
void *pInstanceContext;
#define HTC_STATE_WAIT_BUFFERS (1 << 0)
#define HTC_STATE_STOPPING (1 << 1)
#ifdef HTC_CAPTURE_LAST_FRAME
HTC_FRAME_HDR LastFrameHdr; /* useful for debugging */
A_UINT8 LastTrailer[256];
A_UINT8 LastTrailerLength;
#endif
} HTC_TARGET;
#define HTC_STOPPING(t) ((t)->HTCStateFlags & HTC_STATE_STOPPING)
#define LOCK_HTC(t) A_MUTEX_LOCK(&(t)->HTCLock);
#define UNLOCK_HTC(t) A_MUTEX_UNLOCK(&(t)->HTCLock);
#define LOCK_HTC_RX(t) A_MUTEX_LOCK(&(t)->HTCRxLock);
#define UNLOCK_HTC_RX(t) A_MUTEX_UNLOCK(&(t)->HTCRxLock);
#define LOCK_HTC_TX(t) A_MUTEX_LOCK(&(t)->HTCTxLock);
#define UNLOCK_HTC_TX(t) A_MUTEX_UNLOCK(&(t)->HTCTxLock);
#define GET_HTC_TARGET_FROM_HANDLE(hnd) ((HTC_TARGET *)(hnd))
#define HTC_RECYCLE_RX_PKT(target,p) \
{ \
HTC_PACKET_RESET_RX(pPacket); \
HTCAddReceivePkt((HTC_HANDLE)(target),(p)); \
}
/* internal HTC functions */
void HTCControlTxComplete(void *Context, HTC_PACKET *pPacket);
void HTCControlRecv(void *Context, HTC_PACKET *pPacket);
A_STATUS HTCWaitforControlMessage(HTC_TARGET *target, HTC_PACKET **ppControlPacket);
HTC_PACKET *HTCAllocControlBuffer(HTC_TARGET *target, HTC_PACKET_QUEUE *pList);
void HTCFreeControlBuffer(HTC_TARGET *target, HTC_PACKET *pPacket, HTC_PACKET_QUEUE *pList);
A_STATUS HTCIssueSend(HTC_TARGET *target, HTC_PACKET *pPacket, A_UINT8 Flags);
A_STATUS HTCIssueRecv(HTC_TARGET *target, HTC_PACKET *pPacket);
void HTCRecvCompleteHandler(void *Context, HTC_PACKET *pPacket);
A_STATUS HTCRecvMessagePendingHandler(void *Context, A_UINT32 LookAhead, A_BOOL *pAsyncProc);
void HTCProcessCreditRpt(HTC_TARGET *target, HTC_CREDIT_REPORT *pRpt, int NumEntries, HTC_ENDPOINT_ID FromEndpoint);
A_STATUS HTCSendSetupComplete(HTC_TARGET *target);
void HTCFlushRecvBuffers(HTC_TARGET *target);
void HTCFlushSendPkts(HTC_TARGET *target);
void DumpCreditDist(HTC_ENDPOINT_CREDIT_DIST *pEPDist);
void DumpCreditDistStates(HTC_TARGET *target);
void DebugDumpBytes(A_UCHAR *buffer, A_UINT16 length, char *pDescription);
static INLINE HTC_PACKET *HTC_ALLOC_CONTROL_TX(HTC_TARGET *target) {
HTC_PACKET *pPacket = HTCAllocControlBuffer(target,&target->ControlBufferTXFreeList);
if (pPacket != NULL) {
/* set payload pointer area with some headroom */
pPacket->pBuffer = pPacket->pBufferStart + HTC_HDR_LENGTH;
}
return pPacket;
}
#define HTC_FREE_CONTROL_TX(t,p) HTCFreeControlBuffer((t),(p),&(t)->ControlBufferTXFreeList)
#define HTC_ALLOC_CONTROL_RX(t) HTCAllocControlBuffer((t),&(t)->ControlBufferRXFreeList)
#define HTC_FREE_CONTROL_RX(t,p) \
{ \
HTC_PACKET_RESET_RX(p); \
HTCFreeControlBuffer((t),(p),&(t)->ControlBufferRXFreeList); \
}
#ifdef __cplusplus
}
#endif
#endif /* _HTC_INTERNAL_H_ */
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