FreeCalypso > hg > fc-tourmaline

view src/condat/com/include/cl_list.h @ 220:0ed36de51973

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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 4e78acac3d88
children
line wrap: on
line source

/* 
+----------------------------------------------------------------------------- 
|  Project :  COMLIB
|  Modul   :  RR/PL
+----------------------------------------------------------------------------- 
|  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 List Processing functions
|             and the prototypes of those functions: RR/PL layer.
+----------------------------------------------------------------------------- 
*/ 

#ifndef CL_LIST_H
#define CL_LIST_H

/*==== CONST ================================================================*/

#define BITOFFSET_LIST          1024

#define MAX_BYTES_900           16
#define MAX_BYTES_EGSM          23
#define MAX_BYTES_1800          47
#define MAX_BYTES_1900          38
#define MAX_BYTES_DUAL          63
#define MAX_BYTES_850           16
#define MAX_BYTES_DUAL_EGSM     70
#define MAX_BYTES_DUAL_US       54

#define SET_CHANNEL_BIT     0
#define RESET_CHANNEL_BIT   1
#define GET_CHANNEL_BIT     2
#define CHECK_CHANNEL       3


#define T_LIST_MAX_SIZE 128 /* 1024/8 = 128 */
typedef struct
{
  UBYTE                 channels [T_LIST_MAX_SIZE];
} T_LIST;



/*==== MACROS ================================================================*/

#define srv_set_channel(list,ch)    scr_channel_bit(list,ch,SET_CHANNEL_BIT)
#define srv_unset_channel(list,ch)  scr_channel_bit(list,ch,RESET_CHANNEL_BIT)
#define srv_get_channel(list,ch)    scr_channel_bit(list,ch,GET_CHANNEL_BIT)

/*==== VARS =================================================================*/

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

/*==== FUNCTIONS ============================================================*/

EXTERN UBYTE  scr_channel_bit             (T_LIST              *list,
                                           int                  channel,
                                           int                  mode);
EXTERN int    srv_create_list             (T_LIST              *list,
                                           USHORT              *channel_array,
                                           USHORT              size,
                                           UBYTE               zero_at_start,
                                           USHORT              start_index);
EXTERN void   srv_clear_list              (T_LIST              *list);
EXTERN void   srv_copy_list               (T_LIST              *target_list,
                                           T_LIST              *source_list,
                                           UBYTE               size);
EXTERN UBYTE  srv_compare_list            (T_LIST              *list1,
                                           T_LIST              *list2);
EXTERN void   srv_merge_list              (T_LIST              *target_list,
                                           T_LIST              *list);
EXTERN void   srv_unmask_list             (T_LIST *target,T_LIST *source);
EXTERN void   srv_trace_freq_in_list      (T_LIST *list);
EXTERN U8     srv_get_region_from_std     (U8 std);
EXTERN U16    srv_count_list              (T_LIST *list);
extern BOOL   srv_is_list_set             (T_LIST *list);

#endif /* #ifndef CL_LIST_H */