FreeCalypso > hg > fc-tourmaline
view src/nucleus/mbf.c @ 51:04aaa5622fa7
disable deep sleep when Iota LEDB is on
TI's Iota chip docs say that CLK13M must be running in order for
LEDB to work, and practical experience on Mot C139 which uses
Iota LEDB for its keypad backlight concurs: if Calypso enters
deep sleep while the keypad backlight is turned on, the light
flickers visibly as the chipset goes into and out of deep sleep.
TI's original L1 sleep manager code had logic to disable deep sleep
when LT_Status() returns nonzero, but that function only works
for B-Sample and C-Sample LT, always returns 0 on BOARD 41 - no
check of Iota LEDB status anywhere. Change this code for our
current hardware: disable deep sleep when Iota LEDB has been
turned on through LLS.
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Mon, 19 Oct 2020 05:11:29 +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 */ /* */ /* mbf.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* MB - Mailbox Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains routines to obtain facts about the Mailbox */ /* management component. */ /* */ /* DATA STRUCTURES */ /* */ /* None */ /* */ /* FUNCTIONS */ /* */ /* MBF_Established_Mailboxes Number of created mailboxes */ /* MBF_Mailbox_Pointers Build mailbox pointer list */ /* MBF_Mailbox_Information Retrieve mailbox information */ /* */ /* DEPENDENCIES */ /* */ /* cs_extr.h Common Service functions */ /* tc_extr.h Thread Control functions */ /* mb_extr.h Mailbox functions */ /* hi_extr.h History functions */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1994 Initial version of mailbox 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 "mb_extr.h" /* Mailbox functions */ #include "hi_extr.h" /* History functions */ /* Define external inner-component global data references. */ extern CS_NODE *MBD_Created_Mailboxes_List; extern UNSIGNED MBD_Total_Mailboxes; extern TC_PROTECT MBD_List_Protect; /* Define internal component function prototypes. */ VOID MBC_Cleanup(VOID *information); /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBF_Established_Mailboxes */ /* */ /* DESCRIPTION */ /* */ /* This function returns the current number of established */ /* mailboxes. Mailboxes previously deleted are no longer */ /* considered established. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* */ /* INPUTS */ /* */ /* None */ /* */ /* OUTPUTS */ /* */ /* MBD_Total_Mailboxes Number of established */ /* mailboxes */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* */ /*************************************************************************/ UNSIGNED MBF_Established_Mailboxes(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 mailboxes. */ return(MBD_Total_Mailboxes); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBF_Mailbox_Pointers */ /* */ /* DESCRIPTION */ /* */ /* This function builds a list of mailbox pointers, starting at the */ /* specified location. The number of mailbox pointers placed in */ /* the list is equivalent to the total number of mailboxes 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 mailboxes 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 Changed function interface to */ /* match the prototype, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* */ /*************************************************************************/ UNSIGNED MBF_Mailbox_Pointers(NU_MAILBOX **pointer_list, UNSIGNED maximum_pointers) { CS_NODE *node_ptr; /* Pointer to each MCB */ 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 mailboxes. */ TCT_Protect(&MBD_List_Protect); /* Loop until all mailbox pointers are in the list or until the maximum list size is reached. */ node_ptr = MBD_Created_Mailboxes_List; while ((node_ptr) && (pointers < maximum_pointers)) { /* Place the node into the destination list. */ *pointer_list++ = (NU_MAILBOX *) 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 == MBD_Created_Mailboxes_List) /* The list search is complete. */ node_ptr = NU_NULL; } /* Release protection against access to the list of created mailboxes. */ TCT_Unprotect(); /* Return to user mode */ NU_USER_MODE(); /* Return the number of pointers in the list. */ return(pointers); } /*************************************************************************/ /* */ /* FUNCTION */ /* */ /* MBF_Mailbox_Information */ /* */ /* DESCRIPTION */ /* */ /* This function returns information about the specified mailbox. */ /* However, if the supplied mailbox pointer is invalid, the */ /* function simply returns an error status. */ /* */ /* CALLED BY */ /* */ /* Application */ /* */ /* CALLS */ /* */ /* [TCT_Check_Stack] Stack checking function */ /* TCT_System_Protect Protect mailbox */ /* TCT_Unprotect Release protection */ /* */ /* INPUTS */ /* */ /* mailbox_ptr Pointer to the mailbox */ /* name Destination for the name */ /* suspend_type Destination for the type of */ /* suspension */ /* message_present Destination for the message */ /* present flag */ /* 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 mailbox pointer */ /* is supplied */ /* NU_INVALID_MAILBOX If mailbox pointer invalid */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Changed function interface to */ /* match the prototype, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 11-18-1996 Corrected SPR220. */ /* */ /*************************************************************************/ STATUS MBF_Mailbox_Information(NU_MAILBOX *mailbox_ptr, CHAR *name, OPTION *suspend_type, DATA_ELEMENT *message_present, UNSIGNED *tasks_waiting, NU_TASK **first_task) { MB_MCB *mailbox; /* Mailbox 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 mailbox pointer into internal pointer. */ mailbox = (MB_MCB *) mailbox_ptr; #ifdef NU_ENABLE_STACK_CHECK /* Call stack checking function to check for an overflow condition. */ TCT_Check_Stack(); #endif /* Determine if this mailbox id is valid. */ if ((mailbox != NU_NULL) && (mailbox -> mb_id == MB_MAILBOX_ID)) { /* Setup protection of the mailbox. */ TCT_System_Protect(); /* The mailbox pointer is valid. Reflect this in the completion status and fill in the actual information. */ completion = NU_SUCCESS; /* Copy the mailbox's name. */ for (i = 0; i < NU_MAX_NAME; i++) *name++ = mailbox -> mb_name[i]; /* Determine the suspension type. */ if (mailbox -> mb_fifo_suspend) *suspend_type = NU_FIFO; else *suspend_type = NU_PRIORITY; /* Indicate whether or not there is a message in the mailbox. */ *message_present = mailbox -> mb_message_present; /* Retrieve the number of tasks waiting and the pointer to the first task waiting. */ *tasks_waiting = mailbox -> mb_tasks_waiting; if (mailbox -> mb_suspension_list) /* There is a task waiting. */ *first_task = (NU_TASK *) (mailbox -> mb_suspension_list) -> mb_suspended_task; else /* There are no tasks waiting. */ *first_task = NU_NULL; /* Release protection. */ TCT_Unprotect(); } else /* Indicate that the mailbox pointer is invalid. */ completion = NU_INVALID_MAILBOX; /* Return to user mode */ NU_USER_MODE(); /* Return the appropriate completion status. */ return(completion); }