FreeCalypso > hg > fc-tourmaline
view src/nucleus/pif.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 |
line wrap: on
line source
/*************************************************************************/ /* */ /* 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 */ /* */ /* pif.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* PI - Pipe Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines to obtain facts about the Pipe */ /* management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* PIF_Established_Pipes Number of created pipes */ /* PIF_Pipe_Information Retrieve pipe information */ /* PIF_Pipe_Pointers Build pipe pointer list */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* pi_extr.h Pipe functions */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Initial version of pipe 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 "pi_extr.h" /* Pipe functions */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *PID_Created_Pipes_List; extern UNSIGNED PID_Total_Pipes; extern TC_PROTECT PID_List_Protect; /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PIF_Established_Pipes */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established */ /* pipes. Pipes previously deleted are no longer considered */ /* established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* PID_Total_Pipes Number of established */ /* pipes */ /* */ /* 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 PIF_Established_Pipes(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 pipes. */ return(PID_Total_Pipes); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PIF_Pipe_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of pipe pointers, starting at the */ /* specified location. The number of pipe pointers placed in the */ /* list is equivalent to the total number of pipes 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 pipe pointers */ /* 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 PIF_Pipe_Pointers(NU_PIPE **pointer_list,UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each QCB */ 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 pipes. */ TCT_Protect(&PID_List_Protect); /* Loop until all pipe pointers are in the list or until the maximum list size is reached. */ node_ptr = PID_Created_Pipes_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_PIPE *) 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 == PID_Created_Pipes_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection against access to the list of created pipes. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* PIF_Pipe_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified pipe. */ /* However, if the supplied pipe pointer is invalid, the */ /* function simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect pipe */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* pipe_ptr Pointer to the pipe */ /* name Destination for the name */ /* start_address Destination for the start */ /* address of the pipe */ /* pipe_size Destination for pipe size */ /* available Destination for available */ /* room in pipe */ /* messages Destination for number of */ /* messages piped */ /* message_type Destination for message type */ /* message_size Destination for message size */ /* suspend_type Destination for suspension */ /* type */ /* 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 pipe pointer */ /* is supplied */ /* NU_INVALID_PIPE If pipe 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 PIF_Pipe_Information(NU_PIPE *pipe_ptr, CHAR *name, VOID **start_address, UNSIGNED *pipe_size, UNSIGNED *available, UNSIGNED *messages, OPTION *message_type, UNSIGNED *message_size, OPTION *suspend_type, UNSIGNED *tasks_waiting, NU_TASK **first_task) { PI_PCB *pipe; /* Pipe control block ptr */ INT i; /* Working integer variable */ STATUS completion; /* Completion status */ NU_SUPERV_USER_VARIABLES /* Switch to supervisor mode */ NU_SUPERVISOR_MODE(); /* Move input pipe pointer into internal pointer. */ pipe = (PI_PCB *) pipe_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this pipe id is valid. */ if ((pipe != NU_NULL) && (pipe -> pi_id == PI_PIPE_ID)) { /* Setup protection of the pipe. */ TCT_System_Protect(); /* The pipe pointer is valid. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the pipe's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = pipe -> pi_name[i]; /* Determine the suspension type. */ if (pipe -> pi_fifo_suspend) *suspend_type = NU_FIFO; else *suspend_type = NU_PRIORITY; /* Determine the message type. */ if (pipe -> pi_fixed_size) *message_type = NU_FIXED_SIZE; else *message_type = NU_VARIABLE_SIZE; /* Get various information about the pipe. */ *start_address = (VOID *) pipe -> pi_start; *pipe_size = pipe -> pi_pipe_size; *available = pipe -> pi_available; *messages = pipe -> pi_messages; *message_size = pipe -> pi_message_size; /* Retrieve the number of tasks waiting and the pointer to the first task waiting. */ *tasks_waiting = pipe -> pi_tasks_waiting; if (pipe -> pi_suspension_list) /* There is a task waiting. */ *first_task = (NU_TASK *) (pipe -> pi_suspension_list) -> pi_suspended_task; else /* There are no tasks waiting. */ *first_task = NU_NULL; /* Release protection of the pipe. */ TCT_Unprotect(); } else /* Indicate that the pipe pointer is invalid. */ completion = NU_INVALID_PIPE; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }