mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-09 03:57:30 +02:00
fb189822fc
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15918 3c298f89-4303-0410-b956-a3cf2f4a3e73
440 lines
21 KiB
C
440 lines
21 KiB
C
/*
|
|
*
|
|
* 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_API_H_
|
|
#define _HTC_API_H_
|
|
|
|
#include <htc.h>
|
|
#include <htc_services.h>
|
|
#include "htc_packet.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
/* TODO.. for BMI */
|
|
#define ENDPOINT1 0
|
|
// TODO -remove me, but we have to fix BMI first
|
|
#define HTC_MAILBOX_NUM_MAX 4
|
|
|
|
|
|
/* ------ Endpoint IDS ------ */
|
|
typedef enum
|
|
{
|
|
ENDPOINT_UNUSED = -1,
|
|
ENDPOINT_0 = 0,
|
|
ENDPOINT_1 = 1,
|
|
ENDPOINT_2 = 2,
|
|
ENDPOINT_3,
|
|
ENDPOINT_4,
|
|
ENDPOINT_5,
|
|
ENDPOINT_6,
|
|
ENDPOINT_7,
|
|
ENDPOINT_8,
|
|
ENDPOINT_MAX,
|
|
} HTC_ENDPOINT_ID;
|
|
|
|
/* this is the amount of header room required by users of HTC */
|
|
#define HTC_HEADER_LEN HTC_HDR_LENGTH
|
|
|
|
typedef void *HTC_HANDLE;
|
|
|
|
typedef A_UINT16 HTC_SERVICE_ID;
|
|
|
|
typedef struct _HTC_INIT_INFO {
|
|
void (*AddInstance)(HTC_HANDLE);
|
|
void (*DeleteInstance)(void *Instance);
|
|
void (*TargetFailure)(void *Instance, A_STATUS Status);
|
|
} HTC_INIT_INFO;
|
|
|
|
/* per service connection send completion */
|
|
typedef void (*HTC_EP_SEND_PKT_COMPLETE)(void *,HTC_PACKET *);
|
|
/* per service connection pkt received */
|
|
typedef void (*HTC_EP_RECV_PKT)(void *,HTC_PACKET *);
|
|
|
|
/* Optional per service connection receive buffer re-fill callback,
|
|
* On some OSes (like Linux) packets are allocated from a global pool and indicated up
|
|
* to the network stack. The driver never gets the packets back from the OS. For these OSes
|
|
* a refill callback can be used to allocate and re-queue buffers into HTC.
|
|
*
|
|
* On other OSes, the network stack can call into the driver's OS-specifc "return_packet" handler and
|
|
* the driver can re-queue these buffers into HTC. In this regard a refill callback is
|
|
* unnecessary */
|
|
typedef void (*HTC_EP_RECV_REFILL)(void *, HTC_ENDPOINT_ID Endpoint);
|
|
|
|
/* Optional per service connection callback when a send queue is full. This can occur if the
|
|
* host continues queueing up TX packets faster than credits can arrive
|
|
* To prevent the host (on some Oses like Linux) from continuously queueing packets
|
|
* and consuming resources, this callback is provided so that that the host
|
|
* can disable TX in the subsystem (i.e. network stack)
|
|
* Other OSes require a "per-packet" indication_RAW_STREAM_NUM_MAX for each completed TX packet, this
|
|
* closed loop mechanism will prevent the network stack from overunning the NIC */
|
|
typedef void (*HTC_EP_SEND_QUEUE_FULL)(void *, HTC_ENDPOINT_ID Endpoint);
|
|
/* Optional per service connection callback when a send queue is available for receive new packet. */
|
|
typedef void (*HTC_EP_SEND_QUEUE_AVAIL)(void *, HTC_ENDPOINT_ID Endpoint);
|
|
|
|
typedef struct _HTC_EP_CALLBACKS {
|
|
void *pContext; /* context for each callback */
|
|
HTC_EP_SEND_PKT_COMPLETE EpTxComplete; /* tx completion callback for connected endpoint */
|
|
HTC_EP_RECV_PKT EpRecv; /* receive callback for connected endpoint */
|
|
HTC_EP_RECV_REFILL EpRecvRefill; /* OPTIONAL receive re-fill callback for connected endpoint */
|
|
HTC_EP_SEND_QUEUE_FULL EpSendFull; /* OPTIONAL send full callback */
|
|
HTC_EP_SEND_QUEUE_AVAIL EpSendAvail; /* OPTIONAL send available callback */
|
|
} HTC_EP_CALLBACKS;
|
|
|
|
/* service connection information */
|
|
typedef struct _HTC_SERVICE_CONNECT_REQ {
|
|
HTC_SERVICE_ID ServiceID; /* service ID to connect to */
|
|
A_UINT16 ConnectionFlags; /* connection flags, see htc protocol definition */
|
|
A_UINT8 *pMetaData; /* ptr to optional service-specific meta-data */
|
|
A_UINT8 MetaDataLength; /* optional meta data length */
|
|
HTC_EP_CALLBACKS EpCallbacks; /* endpoint callbacks */
|
|
int MaxSendQueueDepth; /* maximum depth of any send queue */
|
|
} HTC_SERVICE_CONNECT_REQ;
|
|
|
|
/* service connection response information */
|
|
typedef struct _HTC_SERVICE_CONNECT_RESP {
|
|
A_UINT8 *pMetaData; /* caller supplied buffer to optional meta-data */
|
|
A_UINT8 BufferLength; /* length of caller supplied buffer */
|
|
A_UINT8 ActualLength; /* actual length of meta data */
|
|
HTC_ENDPOINT_ID Endpoint; /* endpoint to communicate over */
|
|
int MaxMsgLength; /* max length of all messages over this endpoint */
|
|
A_UINT8 ConnectRespCode; /* connect response code from target */
|
|
} HTC_SERVICE_CONNECT_RESP;
|
|
|
|
/* endpoint distribution structure */
|
|
typedef struct _HTC_ENDPOINT_CREDIT_DIST {
|
|
struct _HTC_ENDPOINT_CREDIT_DIST *pNext;
|
|
struct _HTC_ENDPOINT_CREDIT_DIST *pPrev;
|
|
HTC_SERVICE_ID ServiceID; /* Service ID (set by HTC) */
|
|
HTC_ENDPOINT_ID Endpoint; /* endpoint for this distribution struct (set by HTC) */
|
|
A_UINT32 DistFlags; /* distribution flags, distribution function can
|
|
set default activity using SET_EP_ACTIVE() macro */
|
|
int TxCreditsNorm; /* credits for normal operation, anything above this
|
|
indicates the endpoint is over-subscribed, this field
|
|
is only relevant to the credit distribution function */
|
|
int TxCreditsMin; /* floor for credit distribution, this field is
|
|
only relevant to the credit distribution function */
|
|
int TxCreditsAssigned; /* number of credits assigned to this EP, this field
|
|
is only relevant to the credit dist function */
|
|
int TxCredits; /* current credits available, this field is used by
|
|
HTC to determine whether a message can be sent or
|
|
must be queued */
|
|
int TxCreditsToDist; /* pending credits to distribute on this endpoint, this
|
|
is set by HTC when credit reports arrive.
|
|
The credit distribution functions sets this to zero
|
|
when it distributes the credits */
|
|
int TxCreditsSeek; /* this is the number of credits that the current pending TX
|
|
packet needs to transmit. This is set by HTC when
|
|
and endpoint needs credits in order to transmit */
|
|
int TxCreditSize; /* size in bytes of each credit (set by HTC) */
|
|
int TxCreditsPerMaxMsg; /* credits required for a maximum sized messages (set by HTC) */
|
|
void *pHTCReserved; /* reserved for HTC use */
|
|
} HTC_ENDPOINT_CREDIT_DIST;
|
|
|
|
#define HTC_EP_ACTIVE (1 << 31)
|
|
|
|
/* macro to check if an endpoint has gone active, useful for credit
|
|
* distributions */
|
|
#define IS_EP_ACTIVE(epDist) ((epDist)->DistFlags & HTC_EP_ACTIVE)
|
|
#define SET_EP_ACTIVE(epDist) (epDist)->DistFlags |= HTC_EP_ACTIVE
|
|
|
|
/* credit distibution code that is passed into the distrbution function,
|
|
* there are mandatory and optional codes that must be handled */
|
|
typedef enum _HTC_CREDIT_DIST_REASON {
|
|
HTC_CREDIT_DIST_SEND_COMPLETE = 0, /* credits available as a result of completed
|
|
send operations (MANDATORY) resulting in credit reports */
|
|
HTC_CREDIT_DIST_ACTIVITY_CHANGE = 1, /* a change in endpoint activity occured (OPTIONAL) */
|
|
HTC_CREDIT_DIST_SEEK_CREDITS, /* an endpoint needs to "seek" credits (OPTIONAL) */
|
|
HTC_DUMP_CREDIT_STATE /* for debugging, dump any state information that is kept by
|
|
the distribution function */
|
|
} HTC_CREDIT_DIST_REASON;
|
|
|
|
typedef void (*HTC_CREDIT_DIST_CALLBACK)(void *Context,
|
|
HTC_ENDPOINT_CREDIT_DIST *pEPList,
|
|
HTC_CREDIT_DIST_REASON Reason);
|
|
|
|
typedef void (*HTC_CREDIT_INIT_CALLBACK)(void *Context,
|
|
HTC_ENDPOINT_CREDIT_DIST *pEPList,
|
|
int TotalCredits);
|
|
|
|
/* endpoint statistics action */
|
|
typedef enum _HTC_ENDPOINT_STAT_ACTION {
|
|
HTC_EP_STAT_SAMPLE = 0, /* only read statistics */
|
|
HTC_EP_STAT_SAMPLE_AND_CLEAR = 1, /* sample and immediately clear statistics */
|
|
HTC_EP_STAT_CLEAR /* clear only */
|
|
} HTC_ENDPOINT_STAT_ACTION;
|
|
|
|
/* endpoint statistics */
|
|
typedef struct _HTC_ENDPOINT_STATS {
|
|
A_UINT32 TxCreditLowIndications; /* number of times the host set the credit-low flag in a send message on
|
|
this endpoint */
|
|
A_UINT32 TxIssued; /* running count of TX packets issued */
|
|
A_UINT32 TxCreditRpts; /* running count of total credit reports received for this endpoint */
|
|
A_UINT32 TxCreditRptsFromRx;
|
|
A_UINT32 TxCreditRptsFromOther;
|
|
A_UINT32 TxCreditRptsFromEp0;
|
|
A_UINT32 TxCreditsFromRx; /* count of credits received via Rx packets on this endpoint */
|
|
A_UINT32 TxCreditsFromOther; /* count of credits received via another endpoint */
|
|
A_UINT32 TxCreditsFromEp0; /* count of credits received via another endpoint */
|
|
A_UINT32 TxCreditsConsummed; /* count of consummed credits */
|
|
A_UINT32 TxCreditsReturned; /* count of credits returned */
|
|
A_UINT32 RxReceived; /* count of RX packets received */
|
|
A_UINT32 RxLookAheads; /* count of lookahead records
|
|
found in messages received on this endpoint */
|
|
} HTC_ENDPOINT_STATS;
|
|
|
|
/* ------ Function Prototypes ------ */
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Initialize HTC
|
|
@function name: HTCInit
|
|
@input: pInfo - initialization information
|
|
@output:
|
|
@return: A_OK on success
|
|
@notes: The caller initializes global HTC state and registers various instance
|
|
notification callbacks (see HTC_INIT_INFO).
|
|
|
|
@example:
|
|
@see also: HTCShutdown
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_STATUS HTCInit(HTC_INIT_INFO *pInfo);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Get the underlying HIF device handle
|
|
@function name: HTCGetHifDevice
|
|
@input: HTCHandle - handle passed into the AddInstance callback
|
|
@output:
|
|
@return: opaque HIF device handle usable in HIF API calls.
|
|
@notes:
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void *HTCGetHifDevice(HTC_HANDLE HTCHandle);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Set the associated instance for the HTC handle
|
|
@function name: HTCSetInstance
|
|
@input: HTCHandle - handle passed into the AddInstance callback
|
|
Instance - caller supplied instance object
|
|
@output:
|
|
@return:
|
|
@notes: Caller must set the instance information for the HTC handle in order to receive
|
|
notifications for instance deletion (DeleteInstance callback is called) and for target
|
|
failure notification.
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCSetInstance(HTC_HANDLE HTCHandle, void *Instance);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Set credit distribution parameters
|
|
@function name: HTCSetCreditDistribution
|
|
@input: HTCHandle - HTC handle
|
|
pCreditDistCont - caller supplied context to pass into distribution functions
|
|
CreditDistFunc - Distribution function callback
|
|
CreditDistInit - Credit Distribution initialization callback
|
|
ServicePriorityOrder - Array containing list of service IDs, lowest index is highest
|
|
priority
|
|
ListLength - number of elements in ServicePriorityOrder
|
|
@output:
|
|
@return:
|
|
@notes: The user can set a custom credit distribution function to handle special requirements
|
|
for each endpoint. A default credit distribution routine can be used by setting
|
|
CreditInitFunc to NULL. The default credit distribution is only provided for simple
|
|
"fair" credit distribution without regard to any prioritization.
|
|
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCSetCreditDistribution(HTC_HANDLE HTCHandle,
|
|
void *pCreditDistContext,
|
|
HTC_CREDIT_DIST_CALLBACK CreditDistFunc,
|
|
HTC_CREDIT_INIT_CALLBACK CreditInitFunc,
|
|
HTC_SERVICE_ID ServicePriorityOrder[],
|
|
int ListLength);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Wait for the target to indicate the HTC layer is ready
|
|
@function name: HTCWaitTarget
|
|
@input: HTCHandle - HTC handle
|
|
@output:
|
|
@return:
|
|
@notes: This API blocks until the target responds with an HTC ready message.
|
|
The caller should not connect services until the target has indicated it is
|
|
ready.
|
|
@example:
|
|
@see also: HTCConnectService
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_STATUS HTCWaitTarget(HTC_HANDLE HTCHandle);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Start target service communications
|
|
@function name: HTCStart
|
|
@input: HTCHandle - HTC handle
|
|
@output:
|
|
@return:
|
|
@notes: This API indicates to the target that the service connection phase is complete
|
|
and the target can freely start all connected services. This API should only be
|
|
called AFTER all service connections have been made. TCStart will issue a
|
|
SETUP_COMPLETE message to the target to indicate that all service connections
|
|
have been made and the target can start communicating over the endpoints.
|
|
@example:
|
|
@see also: HTCConnectService
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_STATUS HTCStart(HTC_HANDLE HTCHandle);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Add receive packet to HTC
|
|
@function name: HTCAddReceivePkt
|
|
@input: HTCHandle - HTC handle
|
|
pPacket - HTC receive packet to add
|
|
@output:
|
|
@return: A_OK on success
|
|
@notes: user must supply HTC packets for capturing incomming HTC frames. The caller
|
|
must initialize each HTC packet using the SET_HTC_PACKET_INFO_RX_REFILL()
|
|
macro.
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_STATUS HTCAddReceivePkt(HTC_HANDLE HTCHandle, HTC_PACKET *pPacket);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Connect to an HTC service
|
|
@function name: HTCConnectService
|
|
@input: HTCHandle - HTC handle
|
|
pReq - connection details
|
|
@output: pResp - connection response
|
|
@return:
|
|
@notes: Service connections must be performed before HTCStart. User provides callback handlers
|
|
for various endpoint events.
|
|
@example:
|
|
@see also: HTCStart
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_STATUS HTCConnectService(HTC_HANDLE HTCHandle,
|
|
HTC_SERVICE_CONNECT_REQ *pReq,
|
|
HTC_SERVICE_CONNECT_RESP *pResp);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Send an HTC packet
|
|
@function name: HTCSendPkt
|
|
@input: HTCHandle - HTC handle
|
|
pPacket - packet to send
|
|
@output:
|
|
@return: A_OK
|
|
@notes: Caller must initialize packet using SET_HTC_PACKET_INFO_TX() macro.
|
|
This interface is fully asynchronous. On error, HTC SendPkt will
|
|
call the registered Endpoint callback to cleanup the packet.
|
|
@example:
|
|
@see also: HTCFlushEndpoint
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_STATUS HTCSendPkt(HTC_HANDLE HTCHandle, HTC_PACKET *pPacket);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Stop HTC service communications
|
|
@function name: HTCStop
|
|
@input: HTCHandle - HTC handle
|
|
@output:
|
|
@return:
|
|
@notes: HTC communications is halted. All receive and pending TX packets will
|
|
be flushed.
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCStop(HTC_HANDLE HTCHandle);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Shutdown HTC
|
|
@function name: HTCShutdown
|
|
@input:
|
|
@output:
|
|
@return:
|
|
@notes: This cleans up all resources allocated by HTCInit().
|
|
@example:
|
|
@see also: HTCInit
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCShutDown(void);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Flush pending TX packets
|
|
@function name: HTCFlushEndpoint
|
|
@input: HTCHandle - HTC handle
|
|
Endpoint - Endpoint to flush
|
|
Tag - flush tag
|
|
@output:
|
|
@return:
|
|
@notes: The Tag parameter is used to selectively flush packets with matching tags.
|
|
The value of 0 forces all packets to be flush regardless of tag.
|
|
@example:
|
|
@see also: HTCSendPkt
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCFlushEndpoint(HTC_HANDLE HTCHandle, HTC_ENDPOINT_ID Endpoint, HTC_TX_TAG Tag);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Dump credit distribution state
|
|
@function name: HTCDumpCreditStates
|
|
@input: HTCHandle - HTC handle
|
|
@output:
|
|
@return:
|
|
@notes: This dumps all credit distribution information to the debugger
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCDumpCreditStates(HTC_HANDLE HTCHandle);
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Indicate a traffic activity change on an endpoint
|
|
@function name: HTCIndicateActivityChange
|
|
@input: HTCHandle - HTC handle
|
|
Endpoint - endpoint in which activity has changed
|
|
Active - TRUE if active, FALSE if it has become inactive
|
|
@output:
|
|
@return:
|
|
@notes: This triggers the registered credit distribution function to
|
|
re-adjust credits for active/inactive endpoints.
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
void HTCIndicateActivityChange(HTC_HANDLE HTCHandle,
|
|
HTC_ENDPOINT_ID Endpoint,
|
|
A_BOOL Active);
|
|
|
|
/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
@desc: Get endpoint statistics
|
|
@function name: HTCGetEndpointStatistics
|
|
@input: HTCHandle - HTC handle
|
|
Endpoint - Endpoint identifier
|
|
Action - action to take with statistics
|
|
@output:
|
|
pStats - statistics that were sampled (can be NULL if Action is HTC_EP_STAT_CLEAR)
|
|
|
|
@return: TRUE if statistics profiling is enabled, otherwise FALSE.
|
|
|
|
@notes: Statistics is a compile-time option and this function may return FALSE
|
|
if HTC is not compiled with profiling.
|
|
|
|
The caller can specify the statistic "action" to take when sampling
|
|
the statistics. This includes:
|
|
|
|
HTC_EP_STAT_SAMPLE: The pStats structure is filled with the current values.
|
|
HTC_EP_STAT_SAMPLE_AND_CLEAR: The structure is filled and the current statistics
|
|
are cleared.
|
|
HTC_EP_STAT_CLEA : the statistics are cleared, the called can pass a NULL value for
|
|
pStats
|
|
|
|
@example:
|
|
@see also:
|
|
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
|
|
A_BOOL HTCGetEndpointStatistics(HTC_HANDLE HTCHandle,
|
|
HTC_ENDPOINT_ID Endpoint,
|
|
HTC_ENDPOINT_STAT_ACTION Action,
|
|
HTC_ENDPOINT_STATS *pStats);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _HTC_API_H_ */
|