FreeCalypso > hg > ffs-editor
diff src/nucleus/tci.c @ 0:92470e5d0b9e
src: partial import from FC Selenite
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Fri, 15 May 2020 01:28:16 +0000 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/nucleus/tci.c Fri May 15 01:28:16 2020 +0000 @@ -0,0 +1,234 @@ +/*************************************************************************/ +/* */ +/* 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 */ +/* */ +/* tci.c Nucleus PLUS 1.14 */ +/* */ +/* COMPONENT */ +/* */ +/* TC - Thread Control */ +/* */ +/* DESCRIPTION */ +/* */ +/* This file contains the initialization routine for this */ +/* component. */ +/* */ +/* DATA STRUCTURES */ +/* */ +/* None */ +/* */ +/* FUNCTIONS */ +/* */ +/* TCI_Initialize Thread Control Initialization*/ +/* */ +/* DEPENDENCIES */ +/* */ +/* tc_defs.h Thread Control constants */ +/* */ +/* HISTORY */ +/* */ +/* DATE REMARKS */ +/* */ +/* 03-01-1993 Created initial version 1.0 */ +/* 04-19-1993 Verified version 1.0 */ +/* 08-09-1993 Corrected problem initializing */ +/* the LISR association table, */ +/* resulting in version 1.0a */ +/* 08-09-1993 Verified version 1.0a */ +/* 03-01-1994 Changed to initialize the system */ +/* protection rather than the */ +/* schedule protection, resulting */ +/* in version 1.1 */ +/* */ +/* 03-18-1994 Verified version 1.1 */ +/* 04-17-1996 updated to version 1.2 */ +/* 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_defs.h" /* Common Service constants */ +#include "tc_defs.h" /* Thread Control constants */ +#include "tc_extr.h" /* Thread Control interfaces */ + +/* 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 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_System_Protect; +extern TC_PROTECT TCD_LISR_Protect; +extern CS_NODE *TCD_Created_HISRs_List; +extern UNSIGNED TCD_Total_HISRs; +extern TC_HCB *TCD_Active_HISR_Heads[TC_HISR_PRIORITIES]; +extern TC_HCB *TCD_Active_HISR_Tails[TC_HISR_PRIORITIES]; +extern TC_HCB *TCD_Execute_HISR; +extern TC_PROTECT TCD_HISR_Protect; +extern INT TCD_Interrupt_Level; + + + +/*************************************************************************/ +/* */ +/* FUNCTION */ +/* */ +/* TCI_Initialize */ +/* */ +/* DESCRIPTION */ +/* */ +/* This function initializes the data structures that control the */ +/* operation of the TC component. The system is initialized as */ +/* idle. This routine must be executed from Supervisor mode in */ +/* Supervisor/User mode switching kernels. */ +/* */ +/* CALLED BY */ +/* */ +/* INC_Initialize System initialization */ +/* */ +/* CALLS */ +/* */ +/* None */ +/* */ +/* INPUTS */ +/* */ +/* None */ +/* */ +/* OUTPUTS */ +/* */ +/* TCD_Created_Tasks_List List of created tasks */ +/* TCD_Total_Tasks Number of created tasks */ +/* TCD_Priority_List Ready task array */ +/* TCD_Priority_Groups Ready priority group bit map */ +/* TCD_Sub_Priority_Groups Sub-priority groups bit map */ +/* TCD_Highest_Priority Highest priority task */ +/* TCD_Execute_Task Top priority task to execute */ +/* TCD_Created_HISRs_List List of created HISRs */ +/* TCD_Total_HISRs Number of created HISRs */ +/* TCD_Active_HISR_Heads Active HISR list head ptrs */ +/* TCD_Active_HISR_Tails Active HISR list tail ptrs */ +/* TCD_Execute_HISR Top priority HISR to execute */ +/* TCD_Current_Thread Current thread pointer */ +/* TCD_Registered_LISRs Registered LISRs list */ +/* TCD_LISR_Pointers Pointers to active LISRs */ +/* TCD_Interrupt_Count Interrupt in progress counter*/ +/* TCD_Stack_Switched Interrupt stack switched flag*/ +/* TCD_List_Protect Protection of task list */ +/* TCD_Schedule_Protect Protection of scheduling */ +/* data structures. */ +/* TCD_HISR_Protect Protection of created HISR */ +/* list */ +/* TCD_Interrupt_Level Enable interrupt level */ +/* */ +/* HISTORY */ +/* */ +/* DATE REMARKS */ +/* */ +/* 03-01-1993 Created initial version 1.0 */ +/* 04-19-1993 Verified version 1.0 */ +/* 08-09-1993 Corrected problem initializing */ +/* the LISR association table, */ +/* resulting in version 1.0a */ +/* 08-09-1993 Verified version 1.0a */ +/* 03-01-1994 Changed to initialize the system */ +/* protection rather than the */ +/* schedule protection, resulting */ +/* in version 1.1 */ +/* */ +/* 03-18-1994 Verified version 1.1 */ +/* */ +/*************************************************************************/ +VOID TCI_Initialize(VOID) +{ + +int i; /* Working index variable */ + + + /* Initialize the created task list to NU_NULL. */ + TCD_Created_Tasks_List = NU_NULL; + + /* Initialize the total number of created tasks to 0. */ + TCD_Total_Tasks = 0; + + /* Initialize the array of ready task lists. */ + for (i = 0; i < TC_PRIORITIES; i++) + TCD_Priority_List[i] = 0; + + /* Initialize the bit maps that represent that at least one task is + ready at the same priority level. */ + TCD_Priority_Groups = 0; + + for (i = 0; i < TC_MAX_GROUPS; i++) + TCD_Sub_Priority_Groups[i] = 0; + + /* Initialize the highest priority flag. */ + TCD_Highest_Priority = TC_PRIORITIES; + + /* Initialize pointers to the task to execute, HISR to execute, + and current thread of execution. */ + TCD_Execute_Task = NU_NULL; + TCD_Execute_HISR = NU_NULL; + TCD_Current_Thread = NU_NULL; + + /* Initialize the created HISRs list to NU_NULL. */ + TCD_Created_HISRs_List = NU_NULL; + + /* Initialize the total number of created HISRs to 0. */ + TCD_Total_HISRs = 0; + + /* Initialize the array of ready HISR list pointers. */ + for (i = 0; i < TC_HISR_PRIORITIES; i++) + { + TCD_Active_HISR_Heads[i] = NU_NULL; + TCD_Active_HISR_Tails[i] = NU_NULL; + } + + /* Initialize the LISR interrupt control data structures. */ + for (i = 0; i <= NU_MAX_VECTORS; i++) + TCD_Registered_LISRs[i] = NU_FALSE; + + for (i = 0; i <= NU_MAX_LISRS; i++) + TCD_LISR_Pointers[i] = NU_NULL; + + /* Initialize the interrupt processing variables. */ + TCD_Interrupt_Count = 0; + TCD_Stack_Switched = 0; + + /* Initialize the task control protection structures. */ + TCD_List_Protect.tc_tcb_pointer = NU_NULL; + TCD_System_Protect.tc_tcb_pointer = NU_NULL; + TCD_LISR_Protect.tc_tcb_pointer = NU_NULL; + TCD_HISR_Protect.tc_tcb_pointer = NU_NULL; + + /* Initialize the interrupt level to enable all interrupts. */ + TCD_Interrupt_Level = NU_ENABLE_INTERRUPTS; +} + + + + +