FreeCalypso > hg > fc-tourmaline
view src/nucleus/tcce.c @ 223:740a8e8fc9d7
startup sync logic rework for the new PWON button boot scheme
Previously we added logic to the MMI task to hold off PEI init until
R2D is running, and then extended that condition to wait for FCHG
init too. However, the dependencies of MMI upon R2D and FCHG don't
start until mmiInit(), and that call is driven by Switch_ON() code,
hence the wait for R2D and FCHG init can be made in that code path
instead of the MMI task. Furthermore, with our new way of signaling
PWON button boot to MMI, we need a new wait to ensure that the MMI
task is up - previously this assurance was provided by the wait for
Kp pointers to be set.
Solution: revert our previous PEI init hold-off additions to MMI,
add a new flag indicating MMI task init done, and put the combined
wait for all needed conditions into our new PWON button boot code
in power.c.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Tue, 27 Apr 2021 06:24:52 +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 */ /* */ /* tcce.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* TC - Thread Control */ /* */ /* DESCRIPTION */ /* */ /* This file contains error checking routines for the functions in */ /* the Thread Control component. This permits easy removal of */ /* error checking logic when it is not needed. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* TCCE_Create_Task Create a task */ /* TCCE_Create_HISR Create HISR */ /* TCCE_Delete_HISR Delete HISR */ /* TCCE_Delete_Task Delete a task */ /* TCCE_Reset_Task Reset a task */ /* TCCE_Terminate_Task Terminate a task */ /* TCCE_Resume_Service Resume a task service call */ /* TCCE_Suspend_Service Suspend a task service call */ /* TCCE_Relinquish Relinquish task execution */ /* TCCE_Task_Sleep Task sleep request */ /* TCCE_Suspend_Error Check for suspend req error */ /* TCCE_Activate_HISR Activate an HISR */ /* TCCE_Validate_Resume Validates resume requests */ /* */ /* DEPENDENCIES */ /* */ /* tc_extr.h Thread Control functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified logic that checked task */ /* status without protection of */ /* scheduling structures, */ /* resulting in version 1.0a */ /* 03-01-1994 Verified version 1.0a */ /* 03-01-1994 Moved non-core error checking */ /* functions to a supplemental */ /* file, and modified function */ /* interfaces, added validate */ /* resume service, resulting in */ /* version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 03-19-1996 Added error checking to */ /* TCCE_Task_Sleep, resulting */ /* in version 1.1+ (spr037) */ /* 04-17-1996 updated to version 1.2 */ /* 10-16-1996 Modified to save the current */ /* thread's protection rather */ /* than that of the task being */ /* resumed (SPR212)(SPR268) */ /* 03-24-1998 Released version 1.3. */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "tc_extr.h" /* Thread control functions */ /* Define external inner-component global data references. */ extern TC_TCB *TCD_Execute_Task; extern VOID *TCD_Current_Thread; /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Create_Task */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the create task function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Create_Task Actual create task function */ /* */ /* INPUTS */ /* */ /* task_ptr Task control block pointer */ /* name Task name */ /* task_entry Entry function of the task */ /* argc Optional task parameter */ /* argv Optional task parameter */ /* stack_address Pointer to start of stack */ /* stack_size Size of task stack in bytes */ /* priority Task priority */ /* time_slice Task time slice */ /* preempt Task preemptability flag */ /* auto_start Automatic task start */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS Successful request */ /* NU_INVALID_TASK Task control block pointer */ /* is NULL */ /* NU_INVALID_ENTRY Task entry function is NULL */ /* NU_INVALID_MEMORY Stack pointer is NULL */ /* NU_INVALID_SIZE Stack size is too small */ /* NU_INVALID_PRIORITY Invalid task priority */ /* NU_INVALID_PREEMPT Invalid preemption selection */ /* NU_INVALID_START Invalid start selection */ /* */ /* 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Create_Task(NU_TASK *task_ptr, CHAR *name, VOID (*task_entry)(UNSIGNED, VOID *), UNSIGNED argc, VOID *argv, VOID *stack_address, UNSIGNED stack_size, OPTION priority, UNSIGNED time_slice, OPTION preempt, OPTION auto_start) { TC_TCB *task; /* Task control block ptr */ STATUS status; /* Completion status */ /* Move input task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Check each parameter. */ if ((task == NU_NULL) || (task -> tc_id == TC_TASK_ID)) /* Invalid task control block pointer. */ status = NU_INVALID_TASK; else if (task_entry == NU_NULL) /* Invalid task entry function pointer. */ status = NU_INVALID_ENTRY; else if (stack_address == NU_NULL) /* Invalid stack starting address. */ status = NU_INVALID_MEMORY; else if (stack_size < NU_MIN_STACK_SIZE) /* Invalid stack size. */ status = NU_INVALID_SIZE; else if ((preempt != NU_PREEMPT) && (preempt != NU_NO_PREEMPT)) /* Invalid preemption. */ status = NU_INVALID_PREEMPT; else if ((auto_start != NU_START) && (auto_start != NU_NO_START)) /* Invalid start selection. */ status = NU_INVALID_START; else /* Call the actual function to create a task. All the parameters appear to be correct. */ status = TCC_Create_Task(task_ptr, name, task_entry, argc, argv, stack_address, stack_size, priority, time_slice, preempt, auto_start); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Create_HISR */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the create HISR function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Create_HISR Actual create HISR function */ /* */ /* INPUTS */ /* */ /* hisr_ptr HISR control block pointer */ /* name HISR name */ /* hisr_entry Entry function of the HISR */ /* priority Task priority */ /* stack_address Pointer to start of stack */ /* stack_size Size of HISR stack in bytes */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_HISR Invalid HISR pointer */ /* NU_INVALID_ENTRY Invalid HISR entry point */ /* NU_INVALID_PRIORITY Invalid HISR priority */ /* NU_INVALID_MEMORY Indicates stack pointer NULL */ /* NU_INVALID_SIZE Indicates stack size is too */ /* small */ /* */ /* 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Create_HISR(NU_HISR *hisr_ptr, CHAR *name, VOID (*hisr_entry)(VOID), OPTION priority, VOID *stack_address, UNSIGNED stack_size) { TC_HCB *hisr; /* HISR control block ptr */ STATUS status; /* Completion status */ /* Move input HISR pointer into internal pointer. */ hisr = (TC_HCB *) hisr_ptr; /* Check each parameter. */ if ((hisr == NU_NULL) || (hisr -> tc_id == TC_HISR_ID)) /* Invalid HISR control block pointer. */ status = NU_INVALID_HISR; else if (hisr_entry == NU_NULL) /* Invalid HISR entry function pointer. */ status = NU_INVALID_ENTRY; else if (stack_address == NU_NULL) /* Invalid stack starting address. */ status = NU_INVALID_MEMORY; else if (stack_size < NU_MIN_STACK_SIZE) /* Invalid stack size. */ status = NU_INVALID_SIZE; else if (((INT) priority) >= TC_HISR_PRIORITIES) /* Invalid HISR priority. */ status = NU_INVALID_PRIORITY; else /* Call the actual function to create a HISR. All the parameters appear to be correct. */ status = TCC_Create_HISR(hisr_ptr, name, hisr_entry, priority, stack_address, stack_size); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Delete_Task */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the delete task function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Delete_Task Actual delete task function */ /* */ /* INPUTS */ /* */ /* task_ptr Task control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If successful completion */ /* NU_INVALID_TASK Task pointer is invalid */ /* NU_INVALID_DELETE Task not in a finished or */ /* terminated state */ /* */ /* 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Delete_Task(NU_TASK *task_ptr) { TC_TCB *task; /* Task control block ptr */ STATUS status; /* Completion status */ /* Move input task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Determine if the supplied task pointer is valid. */ if ((task == NU_NULL) || (task -> tc_id != TC_TASK_ID)) /* Invalid task pointer supplied. */ status = NU_INVALID_TASK; else if ((task -> tc_status != NU_FINISHED) && (task -> tc_status != NU_TERMINATED)) /* A task that is not in the finished or terminated state cannot be deleted. */ status = NU_INVALID_DELETE; else /* Valid task pointer, call the function to delete the task. */ status = TCC_Delete_Task(task_ptr); /* Return the completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Delete_HISR */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the delete HISR function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Delete_HISR Actual delete HISR function */ /* */ /* INPUTS */ /* */ /* hisr_ptr HISR control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_HISR Indicates 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Delete_HISR(NU_HISR *hisr_ptr) { TC_HCB *hisr; /* HISR control block ptr */ STATUS status; /* Completion status */ /* Move input HISR control block pointer into internal pointer. */ hisr = (TC_HCB *) hisr_ptr; /* Determine if the supplied HISR pointer is valid. */ if ((hisr) && (hisr -> tc_id == TC_HISR_ID)) /* Valid HISR pointer, call the function to delete the HISR. */ status = TCC_Delete_HISR(hisr_ptr); else /* Invalid HISR pointer, indicate with the status. */ status = NU_INVALID_HISR; /* Return the completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Reset_Task */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the reset task function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Reset_Task Actual reset task function */ /* */ /* INPUTS */ /* */ /* task_ptr Task control block pointer */ /* argc Optional task parameter */ /* argv Optional task parameter */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_TASK Indicates 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Reset_Task(NU_TASK *task_ptr, UNSIGNED argc, VOID *argv) { TC_TCB *task; /* Task control block ptr */ STATUS status; /* Status of the request */ /* Move input task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Determine if the task pointer is valid. */ if ((task == NU_NULL) || (task -> tc_id != TC_TASK_ID)) /* Task pointer is invalid. */ status = NU_INVALID_TASK; else /* Call actual function to reset the task. */ status = TCC_Reset_Task(task_ptr, argc, argv); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Terminate_Task */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the terminate task function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Terminate_Task Actual terminate task funct */ /* */ /* INPUTS */ /* */ /* task_ptr Task control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_TASK Indicates 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Terminate_Task(NU_TASK *task_ptr) { TC_TCB *task; /* Task control block ptr */ STATUS status; /* Status return */ /* Move input task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Determine if the task pointer is valid. */ if ((task == NU_NULL) || (task -> tc_id != TC_TASK_ID)) /* Task pointer is invalid. */ status = NU_INVALID_TASK; else /* Call actual function to terminate the task. */ status = TCC_Terminate_Task(task_ptr); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Resume_Service */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the resume task function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCCE_Validate_Resume Function that checks the */ /* current task status for a */ /* valid resume request */ /* TCC_Resume_Service Actual task resume service */ /* */ /* INPUTS */ /* */ /* task_ptr Task control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If successful completion */ /* NU_INVALID_TASK Task pointer is invalid */ /* NU_INVALID_RESUME Not previously suspended */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Modified logic that checked task */ /* status without protection of */ /* scheduling structures, */ /* resulting in version 1.0a */ /* 03-01-1994 Verified version 1.0a */ /* 03-01-1994 Modified function interface, */ /* added register optimizations, */ /* moved validate resume function */ /* to this file, resulting in */ /* version 1.1 */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Resume_Service(NU_TASK *task_ptr) { TC_TCB *task; /* Task control block ptr */ STATUS status; /* Completion status */ /* Move task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Determine if the task pointer is valid. */ if ((task == NU_NULL) || (task -> tc_id != TC_TASK_ID)) /* Task pointer is invalid. */ status = NU_INVALID_TASK; /* Make sure that the task is suspended in an identical manner. */ else if (TCCE_Validate_Resume(NU_PURE_SUSPEND, task_ptr)) /* Task is not unconditionally suspended, return error status. */ status = NU_INVALID_RESUME; else /* Call the actual resume service. */ status = TCC_Resume_Service(task_ptr); /* Return the completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Suspend_Service */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the suspend service. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Suspend_Service Actual suspend service */ /* function */ /* */ /* INPUTS */ /* */ /* task_ptr Task control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_SUCCESS If successful completion */ /* NU_INVALID_TASK 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Suspend_Service(NU_TASK *task_ptr) { TC_TCB *task; /* Task control block ptr */ STATUS status; /* Completion status */ /* Move task control block pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Determine if the task pointer is valid. */ if ((task == NU_NULL) || (task -> tc_id != TC_TASK_ID)) /* Task pointer is invalid. */ status = NU_INVALID_TASK; else if ((task->tc_status == NU_FINISHED) || (task->tc_status == NU_TERMINATED)) /* Can't suspend a task in a finished or terminated state */ status = NU_INVALID_SUSPEND; else /* Call the actual service routine. */ status = TCC_Suspend_Service(task_ptr); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Relinquish */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking for the relinquish */ /* function. If the current thread is not a task, this request */ /* is ignored. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Relinquish Actual relinquish function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* None */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* */ /*************************************************************************/ VOID TCCE_Relinquish(VOID) { TC_TCB *task; /* Pointer to task */ /* Pickup the current thread and place it in the task pointer. */ task = (TC_TCB *) TCD_Current_Thread; /* Determine if the current thread is a task. If so, call the actual relinquish routine. Otherwise, ignore the request. */ if ((task) && (task -> tc_id == TC_TASK_ID)) /* Valid request, call the relinquish function. */ TCC_Relinquish(); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Task_Sleep */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking for the task sleep */ /* function. If the current thread is not a task, this request */ /* is ignored. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCC_Task_Sleep Actual task sleep function */ /* */ /* INPUTS */ /* */ /* ticks Number of ticks to sleep for */ /* */ /* OUTPUTS */ /* */ /* None */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-19-1996 Added check for parameter of 0 */ /* or negative number, resulting */ /* in version 1.1+ (spr037) */ /* */ /*************************************************************************/ VOID TCCE_Task_Sleep(UNSIGNED ticks) { TC_TCB *task; /* Pointer to task */ /* If parameter is zero, return */ if (ticks == 0) return; /* Pickup the current thread and place it in the task pointer. */ task = (TC_TCB *) TCD_Current_Thread; /* Determine if the current thread is a task. If so, call the actual task sleep routine. Otherwise, ignore the request. */ if ((task) && (task -> tc_id == TC_TASK_ID)) /* Valid request, call the sleep function. */ TCC_Task_Sleep(ticks); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Suspend_Error */ /* */ /* DESCRIPTION */ /* */ /* This function checks for a suspend request error. Suspension */ /* requests are only allowed from task threads. A suspend request */ /* from any other thread is an error. */ /* */ /* CALLED BY */ /* */ /* Other Components */ /* */ /* CALLS */ /* */ /* None */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* NU_TRUE If an error is detected */ /* NU_FALSE If no error is detected */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* */ /*************************************************************************/ INT TCCE_Suspend_Error(VOID) { TC_TCB *task; /* Task pointer */ INT status = NU_FALSE; /* Initialize to no error */ /* Setup the task pointer. */ task = (TC_TCB *) TCD_Current_Thread; /* Check for suspension errors. */ if (task == NU_NULL) /* Error, suspend request probably from initialization. */ status = NU_TRUE; else if (task -> tc_id != TC_TASK_ID) /* Control block is probably an HISR not a task. */ status = NU_TRUE; else if (task -> tc_signal_active) /* Called from a signal handler. */ status = NU_TRUE; /* Return status to caller. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Activate_HISR */ /* */ /* DESCRIPTION */ /* */ /* This function performs error checking on the parameters supplied */ /* to the activate HISR function. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* TCT_Activate_HISR Actual HISR activate call */ /* */ /* INPUTS */ /* */ /* hisr_ptr HISR control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_INVALID_HISR Invalid HISR pointer */ /* */ /* 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, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ STATUS TCCE_Activate_HISR(NU_HISR *hisr_ptr) { TC_HCB *hisr; /* HISR control block ptr */ STATUS status; /* Completion status */ NU_SUPERV_USER_VARIABLES NU_SUPERVISOR_MODE(); /* Move input HISR control block pointer into internal pointer. */ hisr = (TC_HCB *) hisr_ptr; /* Check each parameter. */ if (hisr == NU_NULL) /* Invalid HISR control block pointer. */ status = NU_INVALID_HISR; else if (hisr -> tc_id != TC_HISR_ID) /* Invalid HISR control block pointer. */ status = NU_INVALID_HISR; else /* Call the routine to activate the HISR. */ status = TCT_Activate_HISR(hisr_ptr); /* Return to user mode */ NU_USER_MODE(); /* Return completion status. */ return(status); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* TCCE_Validate_Resume */ /* */ /* DESCRIPTION */ /* */ /* This function validates the resume service and resume driver */ /* calls with scheduling protection around the examination of the */ /* task status. */ /* */ /* CALLED BY */ /* */ /* IOCE_Resume_Driver Driver error checking funct. */ /* TCCE_Resume_Service Error checking function */ /* */ /* CALLS */ /* */ /* TCT_Set_Current_Protect Setup current protect pointer*/ /* TCT_System_Protect Protect from system access */ /* TCT_System_Unprotect Release system protection */ /* TCT_Unprotect Release current protection */ /* */ /* INPUTS */ /* */ /* resume_type Type of resume request */ /* task_ptr Task control block pointer */ /* */ /* OUTPUTS */ /* */ /* NU_TRUE Invalid resume */ /* NU_FALSE Valid resume */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Created initial version of */ /* function for version 1.0g */ /* 03-01-1994 Verified version 1.0g */ /* 03-01-1994 Modified function interface, */ /* added register optimizations, */ /* added system protection logic, */ /* moved to TCCE since it is an */ /* error interface function, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 10-16-1996 Modified to save the current */ /* thread's protection rather */ /* than that of the task being */ /* resumed (SPR212)(SPR268) */ /* */ /*************************************************************************/ STATUS TCCE_Validate_Resume(OPTION resume_type, NU_TASK *task_ptr) { R1 TC_TCB *task; /* Task control block ptr */ TC_PROTECT *save_protect; /* Save current protection */ STATUS status; /* Return status variable */ NU_SUPERV_USER_VARIABLES NU_SUPERVISOR_MODE(); /* Move input task pointer into internal pointer. */ task = (TC_TCB *) task_ptr; /* Save current protection. */ if (TCD_Current_Thread != NU_NULL) { save_protect = TCT_Get_Current_Protect(); } else { save_protect = NU_NULL; } /* Protect the scheduling structures from multiple access. */ TCT_System_Protect(); /* Does the resume type match the current status? */ if (task -> tc_status == resume_type) /* Indicate that there is no error. */ status = NU_FALSE; /* Check for a resumption of a delayed pure suspend. */ else if ((resume_type == NU_PURE_SUSPEND) && (task -> tc_delayed_suspend)) /* Indicate that there is no error. */ status = NU_FALSE; /* Check for a signal active and the saved status the same as the resume request. */ else if ((resume_type == task -> tc_saved_status) && (task -> tc_signal_active)) /* Indicate that there is no error. */ status = NU_FALSE; else /* Indicate that there is an error. */ status = NU_TRUE; /* Determine how to get out of protection. */ if (save_protect) { /* Restore current protection. */ TCT_Set_Current_Protect(save_protect); /* Release system protect. */ TCT_System_Unprotect(); } else /* Release protection of system structures. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return status to caller. */ return(status); }