diff options
Diffstat (limited to 'board/MAI/bios_emulator/scitech/src/pm/common/agp.c')
| -rw-r--r-- | board/MAI/bios_emulator/scitech/src/pm/common/agp.c | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/board/MAI/bios_emulator/scitech/src/pm/common/agp.c b/board/MAI/bios_emulator/scitech/src/pm/common/agp.c deleted file mode 100644 index d53bc88e14..0000000000 --- a/board/MAI/bios_emulator/scitech/src/pm/common/agp.c +++ /dev/null @@ -1,189 +0,0 @@ -/**************************************************************************** -* -* SciTech OS Portability Manager Library -* -* ======================================================================== -* -* The contents of this file are subject to the SciTech MGL Public -* License Version 1.0 (the "License"); you may not use this file -* except in compliance with the License. You may obtain a copy of -* the License at http://www.scitechsoft.com/mgl-license.txt -* -* Software distributed under the License is distributed on an -* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or -* implied. See the License for the specific language governing -* rights and limitations under the License. -* -* The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc. -* -* The Initial Developer of the Original Code is SciTech Software, Inc. -* All Rights Reserved. -* -* ======================================================================== -* -* Language: ANSI C -* Environment: 32-bit Ring 0 device driver -* -* Description: Generic module to implement AGP support functions using the -* SciTech Nucleus AGP support drivers. If the OS provides -* native AGP support, this module should *NOT* be used. Instead -* wrappers should be placed around the OS support functions -* to implement this functionality. -* -****************************************************************************/ - -#include "pmapi.h" -#ifndef REALMODE -#include "nucleus/agp.h" - -/*--------------------------- Global variables ----------------------------*/ - -static AGP_devCtx *agp; -static AGP_driverFuncs driver; - -/*----------------------------- Implementation ----------------------------*/ - -/**************************************************************************** -RETURNS: -Size of AGP aperture in MB on success, 0 on failure. - -REMARKS: -This function initialises the AGP driver in the system and returns the -size of the available AGP aperture in megabytes. -****************************************************************************/ -ulong PMAPI PM_agpInit(void) -{ - if ((agp = AGP_loadDriver(0)) == NULL) - return 0; - driver.dwSize = sizeof(driver); - if (!agp->QueryFunctions(AGP_GET_DRIVERFUNCS,&driver)) - return 0; - switch (driver.GetApertureSize()) { - case agpSize4MB: return 4; - case agpSize8MB: return 8; - case agpSize16MB: return 16; - case agpSize32MB: return 32; - case agpSize64MB: return 64; - case agpSize128MB: return 128; - case agpSize256MB: return 256; - case agpSize512MB: return 512; - case agpSize1GB: return 1024; - case agpSize2GB: return 2048; - } - return 0; -} - -/**************************************************************************** -REMARKS: -This function closes down the loaded AGP driver. -****************************************************************************/ -void PMAPI PM_agpExit(void) -{ - AGP_unloadDriver(agp); -} - -/**************************************************************************** -PARAMETERS: -numPages - Number of memory pages that should be reserved -type - Type of memory to allocate -physContext - Returns the physical context handle for the mapping -physAddr - Returns the physical address for the mapping - -RETURNS: -True on success, false on failure. - -REMARKS: -This function reserves a range of physical memory addresses on the system -bus which the AGP controller will respond to. If this function succeeds, -the AGP controller can respond to the reserved physical address range on -the bus. However you must first call AGP_commitPhysical to cause this memory -to actually be committed for use before it can be accessed. -****************************************************************************/ -ibool PMAPI PM_agpReservePhysical( - ulong numPages, - int type, - void **physContext, - PM_physAddr *physAddr) -{ - switch (type) { - case PM_agpUncached: - type = agpUncached; - break; - case PM_agpWriteCombine: - type = agpWriteCombine; - break; - case PM_agpIntelDCACHE: - type = agpIntelDCACHE; - break; - default: - return false; - } - return driver.ReservePhysical(numPages,type,physContext,physAddr) == nOK; -} - -/**************************************************************************** -PARAMETERS: -physContext - Physical AGP context to release - -RETURNS: -True on success, false on failure. - -REMARKS: -This function releases a range of physical memory addresses on the system -bus which the AGP controller will respond to. All committed memory for -the physical address range covered by the context will be released. -****************************************************************************/ -ibool PMAPI PM_agpReleasePhysical( - void *physContext) -{ - return driver.ReleasePhysical(physContext) == nOK; -} - -/**************************************************************************** -PARAMETERS: -physContext - Physical AGP context to commit memory for -numPages - Number of pages to be committed -startOffset - Offset in pages into the reserved physical context -physAddr - Returns the physical address of the committed memory - -RETURNS: -True on success, false on failure. - -REMARKS: -This function commits into the specified physical context that was previously -reserved by a call to ReservePhysical. You can use the startOffset and -numPages parameters to only commit portions of the reserved memory range at -a time. -****************************************************************************/ -ibool PMAPI PM_agpCommitPhysical( - void *physContext, - ulong numPages, - ulong startOffset, - PM_physAddr *physAddr) -{ - return driver.CommitPhysical(physContext,numPages,startOffset,physAddr) == nOK; -} - -/**************************************************************************** -PARAMETERS: -physContext - Physical AGP context to free memory for -numPages - Number of pages to be freed -startOffset - Offset in pages into the reserved physical context - -RETURNS: -True on success, false on failure. - -REMARKS: -This function frees memory previously committed by the CommitPhysical -function. Note that you can free a portion of a memory range that was -previously committed if you wish. -****************************************************************************/ -ibool PMAPI PM_agpFreePhysical( - void *physContext, - ulong numPages, - ulong startOffset) -{ - return driver.FreePhysical(physContext,numPages,startOffset) == nOK; -} - -#endif /* !REALMODE */ |
