view src/g23m-aci/aci/wap_aci.h @ 220:0ed36de51973

ABB semaphore protection overhaul The ABB semaphone protection logic that came with TCS211 from TI was broken in several ways: * Some semaphore-protected functions were called from Application_Initialize() context. NU_Obtain_Semaphore() called with NU_SUSPEND fails with NU_INVALID_SUSPEND in this context, but the return value wasn't checked, and NU_Release_Semaphore() would be called unconditionally at the end. The latter call would increment the semaphore count past 1, making the semaphore no longer binary and thus no longer effective for resource protection. The fix is to check the return value from NU_Obtain_Semaphore() and skip the NU_Release_Semaphore() call if the semaphore wasn't properly obtained. * Some SPI hardware manipulation was being done before entering the semaphore- protected critical section. The fix is to reorder the code: first obtain the semaphore, then do everything else. * In the corner case of L1/DSP recovery, l1_abb_power_on() would call some non-semaphore-protected ABB & SPI init functions. The fix is to skip those calls in the case of recovery. * A few additional corner cases existed, all of which are fixed by making ABB semaphore protection 100% consistent for all ABB functions and code paths. There is still one remaining problem of priority inversion: suppose a low- priority task calls an ABB function, and some medium-priority task just happens to preempt right in the middle of that semaphore-protected ABB operation. Then the high-priority SPI task is locked out for a non-deterministic time until that medium-priority task finishes its work and goes back to sleep. This priority inversion problem remains outstanding for now.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 26 Apr 2021 20:55:25 +0000 (2021-04-26)
parents fa8dc04885d8
children
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/*
+-----------------------------------------------------------------------------
|  Project :  GSM-F&D (8411)
|  Modul   :  WAP
+-----------------------------------------------------------------------------
|  Copyright 2002 Texas Instruments Berlin, AG
|                 All rights reserved.
|
|                 This file is confidential and a trade secret of Texas
|                 Instruments Berlin, AG
|                 The receipt of or possession of this file does not convey
|                 any rights to reproduce or disclose its contents or to
|                 manufacture, use, or sell anything it may describe, in
|                 whole, or in part, without the specific written consent of
|                 Texas Instruments Berlin, AG.
+-----------------------------------------------------------------------------
|  Purpose :  Definitions for the WAP module
+-----------------------------------------------------------------------------
*/

#ifndef WAP_ACI_H
#define WAP_ACI_H

/*==== TYPES ======================================================*/

typedef enum
{
  Wap_Not_Init = -1 ,
#ifdef FF_GPF_TCPIP
  TCPIP_Initialization,
  TCPIP_Initialized,
  TCPIP_Activation ,
  TCPIP_Activated ,
#endif /*FF_GPF_TCPIP*/
  UDPA_Activation ,
  UDPA_Activated ,
  IPA_Activation ,
  IPA_Activated ,
  IPA_Configuration ,
  IPA_Configurated ,
  UDPA_Configuration  ,
  UDPA_Configurated ,
#ifdef FF_GPF_TCPIP
  TCPIP_Configuration ,
  TCPIP_Configurated  ,
#endif /*FF_GPF_TCPIP*/
  IPA_Deconfiguration,
  IPA_Deconfigurated,
  UDPA_Deconfiguration,
  UPDA_Deconfigurated,
#ifdef FF_GPF_TCPIP
  TCPIP_Deconfiguration,
  TCPIP_Deconfigurated,
  TCPIP_Deactivation,
  TCPIP_Deactivated,
#endif /*FF_GPF_TCPIP*/
  UDPA_Deactivation,
  UDPA_Deactivated,
  IPA_Deactivation,
  IPA_Deactivated
} T_ACI_WAP_STATES;


/*
 *  Indicate is IP connected or disconnected
 */

typedef enum
{
  IPA_CONN,
  IPA_DSC
}
T_ACI_IPA_DIRC;


/*==== EXPORT =====================================================*/

/*
 *  Prototypes for IP and UDP.
 */

EXTERN void psaIPA_Config ( ULONG ip, USHORT max_trans_unit, T_ACI_IPA_DIRC dirc );
EXTERN void psaUDPA_Config ( UBYTE dirc );

EXTERN T_ACI_RETURN cmhIPA_Configurated ( void );
EXTERN T_ACI_RETURN cmhIPA_Deconfigurated ( void );

EXTERN T_ACI_RETURN cmhUDPA_Activate ( T_ACI_CMD_SRC srcId, SHORT cId );
EXTERN T_ACI_RETURN cmhUDPA_Configurated ( void );
EXTERN T_ACI_RETURN cmhUDPA_Deconfigurated ( void );
EXTERN T_ACI_RETURN cmhUDPA_Deactivate ( UBYTE src_id );

EXTERN T_ACI_RETURN cmhTCPIP_Activate ( T_ACI_CMD_SRC srcId, SHORT cId );
EXTERN T_ACI_RETURN cmhTCPIP_Configurated ( void );
EXTERN T_ACI_RETURN cmhTCPIP_Deconfigurated ( void );
EXTERN T_ACI_RETURN cmhTCPIP_Deactivate ( UBYTE src_id );

EXTERN void psaIPA_Dti_Req(ULONG dti_id, UBYTE peer_to_connect_to, UBYTE dti_conn);
EXTERN void psaUDPA_Dti_Req(ULONG dti_id, UBYTE peer_to_connect_to, UBYTE dti_conn);
EXTERN void psaWAP_Dti_Req(ULONG dti_id, UBYTE peer_to_connect_to, UBYTE dti_conn);


/*
 *  Variables for WAP, state, id and CALL
 */

#ifdef PSA_PPPP_C
GLOBAL T_ACI_WAP_STATES wap_state  = Wap_Not_Init;
GLOBAL SHORT            wapId      = NO_ENTRY;
GLOBAL BOOL             Wap_Call   = FALSE;
GLOBAL UBYTE            wap_dti_id = DTI_DTI_ID_NOTPRESENT;
GLOBAL ULONG            peer_link_id  = DTI_LINK_ID_NOTPRESENT;
GLOBAL ULONG            prot_link_id = DTI_LINK_ID_NOTPRESENT;
GLOBAL UBYTE            peer_entity_id = DTI_ENTITY_MAX;
GLOBAL UBYTE            prot_entity_id = DTI_ENTITY_MAX;

#else

EXTERN T_ACI_WAP_STATES wap_state;
EXTERN SHORT            wapId;
EXTERN BOOL             Wap_Call;
EXTERN UBYTE            wap_dti_id;
EXTERN ULONG            peer_link_id;
EXTERN ULONG            prot_link_id;
EXTERN UBYTE            peer_entity_id;
EXTERN UBYTE            prot_entity_id;

#endif /* of #ifdef CMH_UDPAS_C */


#endif /* of #ifndef WAP_ACI_H */