+++ /dev/null
-/*
- * Copyright (c) 2007 Atheros Communications Inc.
- * All rights reserved.
- *
- * $ATH_LICENSE_HOSTSDK0_C$
- *
- */
-
-
-#ifndef __HTC_H__
-#define __HTC_H__
-
-#ifndef ATH_TARGET
-#include "athstartpack.h"
-#endif
-
-#define A_OFFSETOF(type,field) (int)(&(((type *)NULL)->field))
-
-#define ASSEMBLE_UNALIGNED_UINT16(p,highbyte,lowbyte) \
- (((A_UINT16)(((A_UINT8 *)(p))[(highbyte)])) << 8 | (A_UINT16)(((A_UINT8 *)(p))[(lowbyte)]))
-
-/* alignment independent macros (little-endian) to fetch UINT16s or UINT8s from a
- * structure using only the type and field name.
- * Use these macros if there is the potential for unaligned buffer accesses. */
-#define A_GET_UINT16_FIELD(p,type,field) \
- ASSEMBLE_UNALIGNED_UINT16(p,\
- A_OFFSETOF(type,field) + 1, \
- A_OFFSETOF(type,field))
-
-#define A_SET_UINT16_FIELD(p,type,field,value) \
-{ \
- ((A_UINT8 *)(p))[A_OFFSETOF(type,field)] = (A_UINT8)(value); \
- ((A_UINT8 *)(p))[A_OFFSETOF(type,field) + 1] = (A_UINT8)((value) >> 8); \
-}
-
-#define A_GET_UINT8_FIELD(p,type,field) \
- ((A_UINT8 *)(p))[A_OFFSETOF(type,field)]
-
-#define A_SET_UINT8_FIELD(p,type,field,value) \
- ((A_UINT8 *)(p))[A_OFFSETOF(type,field)] = (value)
-
-/****** DANGER DANGER ***************
- *
- * The frame header length and message formats defined herein were
- * selected to accommodate optimal alignment for target processing. This reduces code
- * size and improves performance.
- *
- * Any changes to the header length may alter the alignment and cause exceptions
- * on the target. When adding to the message structures insure that fields are
- * properly aligned.
- *
- */
-
-/* HTC frame header */
-typedef PREPACK struct _HTC_FRAME_HDR{
- /* do not remove or re-arrange these fields, these are minimally required
- * to take advantage of 4-byte lookaheads in some hardware implementations */
- A_UINT8 EndpointID;
- A_UINT8 Flags;
- A_UINT16 PayloadLen; /* length of data (including trailer) that follows the header */
-
- /***** end of 4-byte lookahead ****/
-
- A_UINT8 ControlBytes[2];
-
- /* message payload starts after the header */
-
-} POSTPACK HTC_FRAME_HDR;
-
-/* frame header flags */
-#define HTC_FLAGS_NEED_CREDIT_UPDATE (1 << 0)
-#define HTC_FLAGS_RECV_TRAILER (1 << 1)
-
-
-#define HTC_HDR_LENGTH (sizeof(HTC_FRAME_HDR))
-#define HTC_MAX_TRAILER_LENGTH 255
-#define HTC_MAX_PAYLOAD_LENGTH (2048 - sizeof(HTC_FRAME_HDR))
-
-/* HTC control message IDs */
-typedef enum {
- HTC_MSG_READY_ID = 1,
- HTC_MSG_CONNECT_SERVICE_ID = 2,
- HTC_MSG_CONNECT_SERVICE_RESPONSE_ID = 3,
- HTC_MSG_SETUP_COMPLETE_ID = 4,
-} HTC_MSG_IDS;
-
-#define HTC_MAX_CONTROL_MESSAGE_LENGTH 256
-
-/* base message ID header */
-typedef PREPACK struct {
- A_UINT16 MessageID;
-} POSTPACK HTC_UNKNOWN_MSG;
-
-/* HTC ready message
- * direction : target-to-host */
-typedef PREPACK struct {
- A_UINT16 MessageID; /* ID */
- A_UINT16 CreditCount; /* number of credits the target can offer */
- A_UINT16 CreditSize; /* size of each credit */
- A_UINT8 MaxEndpoints; /* maximum number of endpoints the target has resources for */
- A_UINT8 _Pad1;
-} POSTPACK HTC_READY_MSG;
-
-#define HTC_SERVICE_META_DATA_MAX_LENGTH 128
-
-/* connect service
- * direction : host-to-target */
-typedef PREPACK struct {
- A_UINT16 MessageID;
- A_UINT16 ServiceID; /* service ID of the service to connect to */
- A_UINT16 ConnectionFlags; /* connection flags */
-
-#define HTC_CONNECT_FLAGS_REDUCE_CREDIT_DRIBBLE (1 << 2) /* reduce credit dribbling when
- the host needs credits */
-#define HTC_CONNECT_FLAGS_THRESHOLD_LEVEL_MASK (0x3)
-#define HTC_CONNECT_FLAGS_THRESHOLD_LEVEL_ONE_FOURTH 0x0
-#define HTC_CONNECT_FLAGS_THRESHOLD_LEVEL_ONE_HALF 0x1
-#define HTC_CONNECT_FLAGS_THRESHOLD_LEVEL_THREE_FOURTHS 0x2
-#define HTC_CONNECT_FLAGS_THRESHOLD_LEVEL_UNITY 0x3
-
- A_UINT8 ServiceMetaLength; /* length of meta data that follows */
- A_UINT8 _Pad1;
-
- /* service-specific meta data starts after the header */
-
-} POSTPACK HTC_CONNECT_SERVICE_MSG;
-
-/* connect response
- * direction : target-to-host */
-typedef PREPACK struct {
- A_UINT16 MessageID;
- A_UINT16 ServiceID; /* service ID that the connection request was made */
- A_UINT8 Status; /* service connection status */
- A_UINT8 EndpointID; /* assigned endpoint ID */
- A_UINT16 MaxMsgSize; /* maximum expected message size on this endpoint */
- A_UINT8 ServiceMetaLength; /* length of meta data that follows */
- A_UINT8 _Pad1;
-
- /* service-specific meta data starts after the header */
-
-} POSTPACK HTC_CONNECT_SERVICE_RESPONSE_MSG;
-
-typedef PREPACK struct {
- A_UINT16 MessageID;
- /* currently, no other fields */
-} POSTPACK HTC_SETUP_COMPLETE_MSG;
-
-
-/* connect response status codes */
-#define HTC_SERVICE_SUCCESS 0 /* success */
-#define HTC_SERVICE_NOT_FOUND 1 /* service could not be found */
-#define HTC_SERVICE_FAILED 2 /* specific service failed the connect */
-#define HTC_SERVICE_NO_RESOURCES 3 /* no resources (i.e. no more endpoints) */
-#define HTC_SERVICE_NO_MORE_EP 4 /* specific service is not allowing any more
- endpoints */
-
-/* report record IDs */
-typedef enum {
- HTC_RECORD_NULL = 0,
- HTC_RECORD_CREDITS = 1,
- HTC_RECORD_LOOKAHEAD = 2,
-} HTC_RPT_IDS;
-
-typedef PREPACK struct {
- A_UINT8 RecordID; /* Record ID */
- A_UINT8 Length; /* Length of record */
-} POSTPACK HTC_RECORD_HDR;
-
-typedef PREPACK struct {
- A_UINT8 EndpointID; /* Endpoint that owns these credits */
- A_UINT8 Credits; /* credits to report since last report */
-} POSTPACK HTC_CREDIT_REPORT;
-
-typedef PREPACK struct {
- A_UINT8 PreValid; /* pre valid guard */
- A_UINT8 LookAhead[4]; /* 4 byte lookahead */
- A_UINT8 PostValid; /* post valid guard */
-
- /* NOTE: the LookAhead array is guarded by a PreValid and Post Valid guard bytes.
- * The PreValid bytes must equal the inverse of the PostValid byte */
-
-} POSTPACK HTC_LOOKAHEAD_REPORT;
-
-#ifndef ATH_TARGET
-#include "athendpack.h"
-#endif
-
-
-#endif /* __HTC_H__ */
-
projects / openwrt / svn-archive / archive.git / blobdiff