FreeCalypso > hg > fc-tourmaline
view src/nucleus/smf.c @ 303:f76436d19a7a default tip
!GPRS config: fix long-standing AT+COPS chance hanging bug
There has been a long-standing bug in FreeCalypso going back years:
sometimes in the AT command bring-up sequence of an ACI-only MS,
the AT+COPS command would produce only a power scan followed by
cessation of protocol stack activity (only L1 ADC traces), instead
of the expected network search sequence. This behaviour was seen
in different FC firmware versions going back to Citrine, and seemed
to follow some law of chance, not reliably repeatable.
This bug has been tracked down and found to be specific to !GPRS
configuration, stemming from our TCS2/TCS3 hybrid and reconstruction
of !GPRS support that was bitrotten in TCS3.2/LoCosto version.
ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3
version and had to be pulled from TCS2 - but as it turns out,
there is a new field in the MMR_REG_REQ primitive that needs to be
set correctly, and that psa_mms.c module is the place where this
initialization needed to be added.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Thu, 08 Jun 2023 08:23:37 +0000 |
| parents | 4e78acac3d88 |
| children |
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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* smf.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* SM - Semaphore Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines to obtain facts about the Semaphore */ /* Management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* SMF_Established_Semaphores Number of created semaphores */ /* SMF_Semaphore_Pointers Build semaphore pointer list */ /* SMF_Semaphore_Information Retrieve semaphore info */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* sm_extr.h Semaphore functions */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Initial version of semaphore */ /* fact service file, version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 11-18-1996 Protected Informational service */ /* from NULL Control Block pointers */ /* creating 1.2a. (SPR220) */ /* 03-24-1998 Released version 1.3 */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "cs_extr.h" /* Common service functions */ #include "tc_extr.h" /* Thread control functions */ #include "sm_extr.h" /* Semaphore functions */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *SMD_Created_Semaphores_List; extern UNSIGNED SMD_Total_Semaphores; extern TC_PROTECT SMD_List_Protect; /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* SMF_Established_Semaphores */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established */ /* semaphores. Semaphores previously deleted are no longer */ /* considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* SMD_Total_Semaphores Number of established */ /* semaphores */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED SMF_Established_Semaphores(VOID) { #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Return the number of established semaphores. */ return(SMD_Total_Semaphores); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* SMF_Semaphore_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of semaphore pointers, starting at */ /* the specified location. The number of semaphore pointers */ /* placed in the list is equivalent to the total number of */ /* semaphores or the maximum number of pointers specified in the */ /* call. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_Protect Protect created list */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* pointer_list Pointer to the list area */ /* maximum_pointers Maximum number of pointers */ /* */ /* OUTPUTS */ /* */ /* pointers Number of semaphores placed */ /* in the list */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 08-09-1993 Corrected pointer retrieval */ /* loop, resulting in version 1.0a */ /* 08-09-1993 Verified version 1.0a */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED SMF_Semaphore_Pointers(NU_SEMAPHORE **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each SMB */ UNSIGNED pointers; /* Number of pointers in list*/ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Initialize the number of pointers returned. */ pointers = 0; /* Protect against access to the list of created semaphores. */ TCT_Protect(&SMD_List_Protect); /* Loop until all semaphore pointers are in the list or until the maximum list size is reached. */ node_ptr = SMD_Created_Semaphores_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_SEMAPHORE *) node_ptr; /* Increment the pointers variable. */ pointers++; /* Position the node pointer to the next node. */ node_ptr = node_ptr -> cs_next; /* Determine if the pointer is at the head of the list. */ if (node_ptr == SMD_Created_Semaphores_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection against access to the list of created semaphores. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* SMF_Semaphore_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified semaphore. */ /* However, if the supplied semaphore pointer is invalid, the */ /* function simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect semaphore */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* semaphore_ptr Pointer to the semaphore */ /* name Destination for the name */ /* current_count Destination for semaphore */ /* instance count */ /* suspend_type Destination for the type of */ /* suspension */ /* tasks_waiting Destination for the tasks */ /* waiting count */ /* first_task Destination for the pointer */ /* to the first task waiting */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If a valid semaphore pointer */ /* is supplied */ /* NU_INVALID_SEMAPHORE If semaphore pointer invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified function interface, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ STATUS SMF_Semaphore_Information(NU_SEMAPHORE *semaphore_ptr, CHAR *name, UNSIGNED *current_count, OPTION *suspend_type, UNSIGNED *tasks_waiting, NU_TASK **first_task) { SM_SCB *semaphore; /* Semaphore control blk ptr */ INT i; /* Working integer variable */ STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); /* Move input semaphore pointer into internal pointer. */ semaphore = (SM_SCB *) semaphore_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this semaphore id is valid. */ if ((semaphore != NU_NULL) && (semaphore -> sm_id == SM_SEMAPHORE_ID)) { /* Setup protection of the semaphore. */ TCT_System_Protect(); /* The semaphore pointer is valid. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the semaphore's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = semaphore -> sm_name[i]; /* Determine the suspension type. */ if (semaphore -> sm_fifo_suspend) *suspend_type = NU_FIFO; else *suspend_type = NU_PRIORITY; /* Return the current semaphore available instance count. */ *current_count = semaphore -> sm_semaphore_count; /* Retrieve the number of tasks waiting and the pointer to the first task waiting. */ *tasks_waiting = semaphore -> sm_tasks_waiting; if (semaphore -> sm_suspension_list) /* There is a task waiting. */ *first_task = (NU_TASK *) (semaphore -> sm_suspension_list) -> sm_suspended_task; else /* There are no tasks waiting. */ *first_task = NU_NULL; /* Release protection of the semaphore. */ TCT_Unprotect(); } else /* Indicate that the semaphore pointer is invalid. */ completion = NU_INVALID_SEMAPHORE; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }