mirrors/acpica
1
0
Fork 0
mirror of https://github.com/acpica/acpica/ synced 2025-03-01 20:01:33 +03:00
Code Issues Packages Projects Releases Wiki Activity

Global lock semaphore support

Browse Source 
date	2000.02.29.21.34.00;	author rmoore1;	state Exp;
This commit is contained in:
aystarik 2005-06-29 17:57:08 +00:00
parent 8778cad8b2
commit c5117ba173
1 changed files with 40 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
source/components/executer/exsystem.c
View File

@ -283,14 +283,24 @@ OsAcquireMutex (
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE ("OsAcquireMutex");
if (ObjDesc)
if (!ObjDesc)
{
Status = OsLocalWaitSemaphore (ObjDesc->Mutex.Semaphore, TimeDesc->Number.Value);
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Support for the _GL_ Mutex object -- go get the global lock
*/
if (ObjDesc->Mutex.Semaphore == Gbl_GlobalLockSemaphore)
{
Status = OsGetGlobalLock ();
return_ACPI_STATUS (Status);
}
Status = OsLocalWaitSemaphore (ObjDesc->Mutex.Semaphore, TimeDesc->Number.Value);
return_ACPI_STATUS (Status);
}
@ -320,11 +330,21 @@ OsReleaseMutex (
FUNCTION_TRACE ("OsReleaseMutex");
if (ObjDesc)
if (!ObjDesc)
{
Status = OsdSignalSemaphore (ObjDesc->Mutex.Semaphore, 1);
return_ACPI_STATUS (AE_BAD_PARAMETER);
}
/*
* Support for the _GL_ Mutex object -- release the global lock
*/
if (ObjDesc->Mutex.Semaphore == Gbl_GlobalLockSemaphore)
{
OsReleaseGlobalLock ();
return_ACPI_STATUS (AE_OK);
}
Status = OsdSignalSemaphore (ObjDesc->Mutex.Semaphore, 1);
return_ACPI_STATUS (Status);
}
@ -453,6 +473,12 @@ OsGetGlobalLock(void)
ACPI_STATUS Status = AE_OK;
FUNCTION_TRACE ("OsGetGlobalLock");
/* Acquire the global lock semaphore first */
OsLocalWaitSemaphore (Gbl_GlobalLockSemaphore, ACPI_UINT32_MAX);
if (Gbl_FACS)
{
/* Only if the FACS is valid */
@ -461,9 +487,8 @@ OsGetGlobalLock(void)
if (GlobalLockReg & GL_OWNED)
{
DEBUG_PRINT (ACPI_ERROR, ("The Global Lock is owned by another process\n"\
"This is a single threaded implementation. There is no way some\n"\
"other process can own the Global Lock!\n"));
DEBUG_PRINT (ACPI_ERROR, ("BIOS has the global lock!\n"));
OsdSignalSemaphore (Gbl_GlobalLockSemaphore, 1);
Status = AE_SHARE;
}
@ -476,7 +501,7 @@ OsGetGlobalLock(void)
}
}
return (Status);
return_ACPI_STATUS (Status);
}
@ -492,8 +517,14 @@ void
OsReleaseGlobalLock (void)
{
FUNCTION_TRACE ("OsReleaseGlobalLock");
OsdSignalSemaphore (Gbl_GlobalLockSemaphore, 1);
if (Gbl_FACS)
{
Gbl_FACS->GlobalLock &= 0xFFFFFFFF ^ GL_OWNED;
}
return_VOID;
}