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view cdg-hybrid/cdginc/p_8010_157_upm_sap.h @ 220:0ed36de51973

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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
parents 35f7a1dc9f7d
children
line wrap: on
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/*
+--------------------------------------------------------------------------+
| PROJECT : PROTOCOL STACK                                                 |
| FILE    : p_8010_157_upm_sap.h                                           |
| SOURCE  : "sap\8010_157_upm_sap.pdf"                                     |
| LastModified : "2004-01-19"                                              |
| IdAndVersion : "8010.157.04.003"                                         |
| SrcFileTime  : "Thu Nov 29 09:29:28 2007"                                |
| Generated by CCDGEN_2.5.5A on Fri Oct 14 21:41:52 2016                   |
|           !!DO NOT MODIFY!!DO NOT MODIFY!!DO NOT MODIFY!!                |
+--------------------------------------------------------------------------+
*/

/* PRAGMAS
 * PREFIX                 : UPM
 * COMPATIBILITY_DEFINES  : NO
 * ALWAYS_ENUM_IN_VAL_FILE: YES
 * ENABLE_GROUP: NO
 * CAPITALIZE_TYPENAME: NO
 */


#ifndef P_8010_157_UPM_SAP_H
#define P_8010_157_UPM_SAP_H


#define CDG_ENTER__P_8010_157_UPM_SAP_H

#define CDG_ENTER__FILENAME _P_8010_157_UPM_SAP_H
#define CDG_ENTER__P_8010_157_UPM_SAP_H__FILE_TYPE CDGINC
#define CDG_ENTER__P_8010_157_UPM_SAP_H__LAST_MODIFIED _2004_01_19
#define CDG_ENTER__P_8010_157_UPM_SAP_H__ID_AND_VERSION _8010_157_04_003

#define CDG_ENTER__P_8010_157_UPM_SAP_H__SRC_FILE_TIME _Thu_Nov_29_09_29_28_2007

#include "CDG_ENTER.h"

#undef CDG_ENTER__P_8010_157_UPM_SAP_H

#undef CDG_ENTER__FILENAME


#include "p_8010_157_upm_sap.val"

#include "p_8010_137_nas_include.h"


/*
 * End of substructure section, begin of primitive definition section
 */

#ifndef __T_UPM_DTI_REQ__
#define __T_UPM_DTI_REQ__
/*
 * 
 * CCDGEN:WriteStruct_Count==1390
 */
typedef struct
{
  U8                        nsapi;                    /*<  0:  1> T_NAS_nsapi,  network layer service access point identifier */
  U8                        dti_conn;                 /*<  1:  1> T_NAS_dti_conn,  DTI connect                       */
  U8                        dti_direction;            /*<  2:  1> T_NAS_dti_direction,  direction of DTI connection  */
  U8                        _align0;                  /*<  3:  1> alignment                                          */
  U32                       dti_linkid;               /*<  4:  4> DTI link identifier                                */
  T_NAS_dti_neighbor        dti_neighbor;             /*<  8:  8> DTI neighbor entity name (type defined in "p_8010_137_nas_include.h") */
} T_UPM_DTI_REQ;
#endif

#ifndef __T_UPM_DTI_CNF__
#define __T_UPM_DTI_CNF__
/*
 * 
 * CCDGEN:WriteStruct_Count==1391
 */
typedef struct
{
  U32                       dti_linkid;               /*<  0:  4> DTI link identifier                                */
  U8                        dti_conn;                 /*<  4:  1> T_NAS_dti_conn,  DTI connect                       */
  U8                        _align0;                  /*<  5:  1> alignment                                          */
  U8                        _align1;                  /*<  6:  1> alignment                                          */
  U8                        _align2;                  /*<  7:  1> alignment                                          */
} T_UPM_DTI_CNF;
#endif

#ifndef __T_UPM_COUNT_REQ__
#define __T_UPM_COUNT_REQ__
/*
 * 
 * CCDGEN:WriteStruct_Count==1392
 */
typedef struct
{
  U8                        nsapi;                    /*<  0:  1> T_NAS_nsapi,  network layer service access point identifier */
  U8                        reset;                    /*<  1:  1> T_NAS_reset,  reset flag                           */
  U8                        _align0;                  /*<  2:  1> alignment                                          */
  U8                        _align1;                  /*<  3:  1> alignment                                          */
} T_UPM_COUNT_REQ;
#endif

#ifndef __T_UPM_COUNT_CNF__
#define __T_UPM_COUNT_CNF__
/*
 * 
 * CCDGEN:WriteStruct_Count==1393
 */
typedef struct
{
  U8                        nsapi;                    /*<  0:  1> T_NAS_nsapi,  network layer service access point identifier */
  U8                        _align0;                  /*<  1:  1> alignment                                          */
  U8                        _align1;                  /*<  2:  1> alignment                                          */
  U8                        _align2;                  /*<  3:  1> alignment                                          */
  U32                       octets_uplink;            /*<  4:  4> octets uplink                                      */
  U32                       octets_downlink;          /*<  8:  4> octets downlink                                    */
  U32                       packets_uplink;           /*< 12:  4> packets uplink                                     */
  U32                       packets_downlink;         /*< 16:  4> packets downlink                                   */
} T_UPM_COUNT_CNF;
#endif


#include "CDG_LEAVE.h"


#endif