view src/nucleus/tcf.c @ 221:5bf097aeaad7

LLS: when turning off all LEDs on boot, skip LED-C Having LLS turn off LED-A and LED-B on boot is normally unnecessary (they should already be off in Iota), but it is harmless, hence this logic is kept for robustness. However, having LLS read-modify-write the BCICTL2 register (to turn off LED-C) creates a potential race condition with FCHG writes to this register, especially in the case when baseband switch-on is caused by VCHG and charging is expected to start right away. Furthermore, control of the charging LED itself (on those hw targets that have it) is the responsibility of the FCHG SWE, hence LLS should leave it alone.
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 26 Apr 2021 21:55:13 +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       */
/*                                                                       */
/*      tcf.c                                          Nucleus PLUS 1.14 */
/*                                                                       */
/* COMPONENT                                                             */
/*                                                                       */
/*      TC - Thread Control                                              */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This file contains information (fact) routines for the Thread    */
/*      Control component.                                               */
/*                                                                       */
/* DATA STRUCTURES                                                       */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* FUNCTIONS                                                             */
/*                                                                       */
/*      TCF_Established_Tasks               Number of created tasks      */
/*      TCF_Established_HISRs               Number of created HISRs      */
/*      TCF_Task_Pointers                   Build list of task pointers  */
/*      TCF_HISR_Pointers                   Build list of HISR pointers  */
/*      TCF_Task_Information                Retrieve task information    */
/*      TCF_HISR_Information                Retrieve HISR information    */
/*                                                                       */
/* DEPENDENCIES                                                          */
/*                                                                       */
/*      cs_extr.h                           Common Service functions     */
/*      tc_extr.h                           Thread Control functions     */
/*      in_extr.h                           Initialization/Interrupt     */
/*                                            functions                  */
/*      tm_extr.h                           Timer Control function       */
/*      er_extr.h                           Error handling function      */
/*      hi_extr.h                           History functions            */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1994      Created initial version 1.1 from                 */
/*                        original 1.0g version of TCC.C                 */
/*                                                                       */
/*      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        "in_extr.h"                 /* Initialization/Interrupt  */
                                            /*   functions               */
#include        "tm_extr.h"                 /* Timer control functions   */
#include        "er_extr.h"                 /* Error handling function   */
#include        "hi_extr.h"                 /* History functions         */


/* Define external inner-component global data references.  */

extern CS_NODE         *TCD_Created_Tasks_List;
extern UNSIGNED         TCD_Total_Tasks;
extern TC_TCB          *TCD_Priority_List[TC_PRIORITIES];
extern UNSIGNED         TCD_Priority_Groups;
extern DATA_ELEMENT     TCD_Sub_Priority_Groups[TC_MAX_GROUPS];
extern UNSIGNED_CHAR    TCD_Lowest_Set_Bit[];
extern INT              TCD_Highest_Priority;
extern TC_TCB          *TCD_Execute_Task;
extern VOID            *TCD_Current_Thread;
extern UNSIGNED_CHAR    TCD_Registered_LISRs[NU_MAX_VECTORS+1];
extern VOID           (*TCD_LISR_Pointers[NU_MAX_LISRS+1])(INT vector);
extern INT              TCD_Interrupt_Count;
extern INT              TCD_Stack_Switched;
extern TC_PROTECT       TCD_List_Protect;
extern TC_PROTECT       TCD_Schedule_Protect;
extern TC_PROTECT       TCD_LISR_Protect;
extern CS_NODE         *TCD_Created_HISRs_List;
extern UNSIGNED         TCD_Total_HISRs;
extern TC_PROTECT       TCD_HISR_Protect;
extern INT              TCD_Unhandled_Interrupt;


/* Define external inner-component function calls that are not available to
   other components.  */

VOID            TCT_Build_Task_Stack(TC_TCB *task_ptr);
VOID            TCT_Build_HISR_Stack(TC_HCB *hisr_ptr);
VOID            TCT_Build_Signal_Frame(TC_TCB *task_ptr);
VOID            TCT_Protect_Switch(TC_TCB *task);
VOID            TCT_Signal_Exit(VOID);



/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Established_Tasks                                            */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function returns the current number of established tasks.   */
/*      Tasks previously deleted are no longer considered established.   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      TCD_Total_Tasks                     Number of established tasks  */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*                                                                       */
/*************************************************************************/
UNSIGNED  TCF_Established_Tasks(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 tasks.  */
    return(TCD_Total_Tasks);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Established_HISRs                                            */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function returns the current number of established HISRs.   */
/*      HISRs previously deleted are no longer considered established.   */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      None                                                             */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      TCD_Total_HISRs                     Number of established HISRs  */
/*                                                                       */
/* HISTORY                                                               */
/*                                                                       */
/*         DATE                    REMARKS                               */
/*                                                                       */
/*      03-01-1993      Created initial version 1.0                      */
/*      04-19-1993      Verified version 1.0                             */
/*                                                                       */
/*************************************************************************/
UNSIGNED  TCF_Established_HISRs(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 HISRs.  */
    return(TCD_Total_HISRs);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Task_Pointers                                                */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function builds a list of task pointers, starting at the    */
/*      specified location.  The number of task pointers placed in the   */
/*      list is equivalent to the total number of tasks or the maximum   */
/*      number of pointers specified in the call.                        */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*      TCT_System_Protect                  Protect task created list    */
/*      TCT_Unprotect                       Release protection of list   */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      pointer_list                        Pointer to the list area     */
/*      maximum_pointers                    Maximum number of pointers   */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      pointers                            Number of tasks placed in    */
/*                                            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 1.0c                 */
/*      08-09-1993      Verified version 1.0c                            */
/*      03-01-1994      Modified function interface,                     */
/*                        resulting in version 1.1                       */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*                                                                       */
/*************************************************************************/
UNSIGNED  TCF_Task_Pointers(NU_TASK **pointer_list, UNSIGNED maximum_pointers)
{

CS_NODE         *node_ptr;                  /* Pointer to each TCB       */
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 the task created list.  */
    TCT_Protect(&TCD_List_Protect);

    /* Loop until all task pointers are in the list or until the maximum
       list size is reached.  */
    node_ptr =  TCD_Created_Tasks_List;
    while ((node_ptr) && (pointers < maximum_pointers))
    {

        /* Place the node into the destination list.  */
        *pointer_list++ =  (NU_TASK *) 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 == TCD_Created_Tasks_List)

            /* The list search is complete.  */
            node_ptr =  NU_NULL;
    }

    /* Release protection.  */
    TCT_Unprotect();

    /* Return to user mode */
    NU_USER_MODE();

    /* Return the number of pointers in the list.  */
    return(pointers);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_HISR_Pointers                                                */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function builds a list of HISR pointers, starting at the    */
/*      specified location.  The number of HISR pointers placed in the   */
/*      list is equivalent to the total number of HISRs or the maximum   */
/*      number of pointers specified in the call.                        */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*      TCT_Protect                         Protect HISR created list    */
/*      TCT_Unprotect                       Release protection of list   */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      pointer_list                        Pointer to the list area     */
/*      maximum_pointers                    Maximum number of pointers   */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*                                          Number of HISRs placed in    */
/*                                            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 1.0c                  */
/*      08-09-1993      Verified version 1.0c                            */
/*      03-01-1994      Modified function interface,                     */
/*                      resulting in version 1.1                         */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*                                                                       */
/*************************************************************************/
UNSIGNED  TCF_HISR_Pointers(NU_HISR **pointer_list, UNSIGNED maximum_pointers)
{

CS_NODE         *node_ptr;                  /* Pointer to each TCB       */
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 the HISR created list.  */
    TCT_Protect(&TCD_HISR_Protect);

    /* Loop until all HISR pointers are in the list or until the maximum
       list size is reached.  */
    node_ptr =  TCD_Created_HISRs_List;
    while ((node_ptr) && (pointers < maximum_pointers))
    {

        /* Place the node into the destination list.  */
        *pointer_list++ =  (NU_HISR *) 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 == TCD_Created_HISRs_List)

            /* The list search is complete.  */
            node_ptr =  NU_NULL;
    }

    /* Release protection.  */
    TCT_Unprotect();

    /* Return to user mode */
    NU_USER_MODE();

    /* Return the number of pointers in the list.  */
    return(pointers);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_Task_Information                                             */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function returns information about the specified task.      */
/*      However, if the supplied task pointer is invalid, the function   */
/*      simply returns an error status.                                  */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*      TCT_System_Protect                  Protect scheduling info      */
/*      TCT_Unprotect                       Release protection           */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      task_ptr                            Pointer to the task          */
/*      name                                Destination for the name     */
/*      status                              Destination for task status  */
/*      scheduled_count                     Destination for scheduled    */
/*                                            count of the task          */
/*      priority                            Destination for task priority*/
/*      preempt                             Destination for preempt flag */
/*      time_slice                          Destination for time slice   */
/*      stack_base                          Destination for pointer to   */
/*                                            base of task's stack       */
/*      stack_size                          Destination for stack size   */
/*      minimum_stack                       Destination for the minimum  */
/*                                            running size of the stack  */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      NU_SUCCESS                          If a valid task pointer is   */
/*                                            supplied                   */
/*      NU_INVALID_TASK                     If task pointer is 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,                     */
/*                        added register optimizations,                  */
/*                        changed protection logic,                      */
/*                        resulting in version 1.1                       */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*      11-18-1996      Corrected SPR220.                                */
/*                                                                       */
/*************************************************************************/
STATUS  TCF_Task_Information(NU_TASK *task_ptr, CHAR *name,
            DATA_ELEMENT *status, UNSIGNED *scheduled_count,
            DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice,
            VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack)
{

R1 TC_TCB      *task;                       /* Task control block ptr    */
INT             i;                          /* Working index             */
STATUS          completion;                 /* Completion status         */
NU_SUPERV_USER_VARIABLES

    /* Switch to supervisor mode */
    NU_SUPERVISOR_MODE();

    /* Move task control block pointer into internal pointer.  */
    task =  (TC_TCB *) task_ptr;


#ifdef  NU_ENABLE_STACK_CHECK

    /* Call stack checking function to check for an overflow condition.  */
    TCT_Check_Stack();

#endif

    /* Determine if this task is valid.  */
    if ((task != NU_NULL) && (task -> tc_id == TC_TASK_ID))
    {

        /* Protect against scheduling changes.  */
        TCT_System_Protect();

        /* The task pointer is successful.  Reflect this in the completion
           status and fill in the actual information.  */
        completion =  NU_SUCCESS;

        /* Copy the task's name.  */
        for (i = 0; i < NU_MAX_NAME; i++)
            *name++ =  task -> tc_name[i];

        /* Determine the preemption posture.  */
        if (task -> tc_preemption)
            *preempt =          NU_PREEMPT;
        else
            *preempt =          NU_NO_PREEMPT;

        /* Setup the remaining fields.  */
        *status =           task -> tc_status;
        *scheduled_count =  task -> tc_scheduled;
        *priority =         task -> tc_priority;
        *time_slice =       task -> tc_time_slice;
        *stack_base =       task -> tc_stack_start;
        *stack_size =       task -> tc_stack_size;
        *minimum_stack =    task -> tc_stack_minimum;

        /* Release protection.  */
        TCT_Unprotect();
    }
    else

        /* Indicate that the task pointer is invalid.   */
        completion =  NU_INVALID_TASK;

    /* Return to user mode */
    NU_USER_MODE();

    /* Return the appropriate completion status.  */
    return(completion);
}


/*************************************************************************/
/*                                                                       */
/* FUNCTION                                                              */
/*                                                                       */
/*      TCF_HISR_Information                                             */
/*                                                                       */
/* DESCRIPTION                                                           */
/*                                                                       */
/*      This function returns information about the specified HISR.      */
/*      However, if the supplied HISR pointer is invalid, the function   */
/*      simply returns an error status.                                  */
/*                                                                       */
/* CALLED BY                                                             */
/*                                                                       */
/*      Application                                                      */
/*                                                                       */
/* CALLS                                                                 */
/*                                                                       */
/*      [TCT_Check_Stack]                   Stack checking function      */
/*      TCT_System_Protect                  Protect scheduling info      */
/*      TCT_Unprotect                       Release protection           */
/*                                                                       */
/* INPUTS                                                                */
/*                                                                       */
/*      hisr_ptr                            Pointer to the hisr          */
/*      name                                Destination for the name     */
/*      scheduled_count                     Destination for scheduled    */
/*                                            count of the HISR          */
/*      priority                            Destination for HISR priority*/
/*      stack_base                          Destination for pointer to   */
/*                                            base of HISR's stack       */
/*      stack_size                          Destination for stack size   */
/*      minimum_stack                       Destination for the minimum  */
/*                                            running size of the stack  */
/*                                                                       */
/* OUTPUTS                                                               */
/*                                                                       */
/*      NU_SUCCESS                          If a valid HISR pointer is   */
/*                                            supplied                   */
/*      NU_INVALID_HISR                     If HISR pointer is 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,                     */
/*                        added register optimizations,                  */
/*                        changed protection logic,                      */
/*                        resulting in version 1.1                       */
/*                                                                       */
/*      03-18-1994      Verified version 1.1                             */
/*      11-18-1996      Corrected SPR220.                                */
/*                                                                       */
/*************************************************************************/
STATUS  TCF_HISR_Information(NU_HISR *hisr_ptr, CHAR *name,
           UNSIGNED *scheduled_count, DATA_ELEMENT *priority,
           VOID **stack_base, UNSIGNED *stack_size, UNSIGNED *minimum_stack)
{

R1 TC_HCB      *hisr;                       /* HISR control block ptr    */
INT             i;                          /* Working index             */
STATUS          completion;                 /* Completion status         */
NU_SUPERV_USER_VARIABLES

    /* Switch to supervisor mode */
    NU_SUPERVISOR_MODE();

    /* Move input HISR control block pointer into internal pointer.  */
    hisr =  (TC_HCB *) hisr_ptr;


#ifdef  NU_ENABLE_STACK_CHECK

    /* Call stack checking function to check for an overflow condition.  */
    TCT_Check_Stack();

#endif

    /* Determine if this HISR is valid.  */
    if ((hisr != NU_NULL) && (hisr -> tc_id == TC_HISR_ID))
    {

        /* Protect against scheduling changes.  */
        TCT_System_Protect();

        /* The HISR pointer is successful.  Reflect this in the completion
           status and fill in the actual information.  */
        completion =  NU_SUCCESS;

        /* Copy the hisr's name.  */
        for (i = 0; i < NU_MAX_NAME; i++)
            *name++ =  hisr -> tc_name[i];

        /* Setup the remaining fields.  */
        *scheduled_count =  hisr -> tc_scheduled;
        *priority =         hisr -> tc_priority;
        *stack_base =       hisr -> tc_stack_start;
        *stack_size =       hisr -> tc_stack_size;
        *minimum_stack =    hisr -> tc_stack_minimum;

        /* Release protection.  */
        TCT_Unprotect();
    }
    else

        /* Indicate that the HISR pointer is invalid.   */
        completion =  NU_INVALID_HISR;

    /* Return to user mode */
    NU_USER_MODE();

    /* Return the appropriate completion status.  */
    return(completion);
}