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view src/condat/com/include/cl_ribu.h @ 268:f2e52cab0a73

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abb_inth.c: check all interrupt causes, not just one The original code used if - else if - else if etc constructs, thus the first detected interrupt was the only one handled. However, Iota ITSTATREG is a clear-on-read register, thus if we only handle the first detected interrupt and skip checking the others, then the other interrupts will be lost, if more than one interrupt happened to occur in one ABB interrupt handling cycle - a form of rare race condition. Change the code to check all interrupts that were read in this cycle.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 13 Jun 2021 18:17:53 +0000
parents 4e78acac3d88
children
line wrap: on
line source

/*
+-----------------------------------------------------------------------------
|  Project :  COMLIB
|  Modul   :  cl_ribu
+-----------------------------------------------------------------------------
|  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 of global types used by common library functions
|             and the prototypes of those functions.
+-----------------------------------------------------------------------------
*/
/*
 *  Version 1.0
 */

/**********************************************************************************/

#ifndef CL_RIBU_H
#define CL_RIBU_H

/**********************************************************************************/

typedef struct
{
  U8 ri;        /* ring buffer read index */
  U8 wi;        /* ring buffer write index */
  U8 depth;     /* ring buffer depth */
  U8 filled;    /* ring buffer filled flag */
} T_RIBU;

typedef struct
{
  U8 type;
  U8 status;
  U8 len;   /* buffer length */
  U8 *buf;  /* buffer start address */
} T_FD;     /* frame descriptor */

typedef struct
{
  T_RIBU idx;
  T_FD **pFDv;  /* frame descriptor vector */
} T_RIBU_FD;

/**********************************************************************************/

EXTERN void cl_ribu_create(T_RIBU_FD **ribu, const U8 buflen, const U8 depth);
EXTERN void cl_ribu_release(T_RIBU_FD **ribu);

EXTERN void cl_ribu_put(const T_FD fd, T_RIBU_FD *ribu);
EXTERN T_FD *cl_ribu_get(T_RIBU_FD *ribu);
EXTERN T_FD *cl_ribu_get_new_frame_desc(T_RIBU_FD *ribu);

EXTERN void cl_ribu_init(T_RIBU *ribu, const U8 depth);
EXTERN U8   cl_ribu_read_index(T_RIBU *ribu);
EXTERN U8   cl_ribu_write_index(T_RIBU *ribu);
EXTERN BOOL cl_ribu_data_avail(const T_RIBU_FD *ribu);

EXTERN  void cl_set_frame_desc(T_FRAME_DESC *frame_desc, U8 *A0, U16 L0, U8 *A1, U16 L1);
EXTERN  void cl_set_frame_desc_0(T_FRAME_DESC *frame_desc, U8 *A0, U16 L0);

#endif /* CL_RIBU_H */