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/** @file
Set up ROM Table for PCI Bus module.
Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "PciBus.h"
//
// PCI ROM image information
//
typedef struct {
EFI_HANDLE ImageHandle;
UINTN Seg;
UINT8 Bus;
UINT8 Dev;
UINT8 Func;
VOID *RomImage;
UINT64 RomSize;
} PCI_ROM_IMAGE;
UINTN mNumberOfPciRomImages = 0;
UINTN mMaxNumberOfPciRomImages = 0;
PCI_ROM_IMAGE *mRomImageTable = NULL;
/**
Add the Rom Image to internal database for later PCI light enumeration.
@param ImageHandle Option Rom image handle.
@param Seg Segment of PCI space.
@param Bus Bus NO of PCI space.
@param Dev Dev NO of PCI space.
@param Func Func NO of PCI space.
@param RomImage Option Rom buffer.
@param RomSize Size of Option Rom buffer.
**/
VOID
PciRomAddImageMapping (
IN EFI_HANDLE ImageHandle,
IN UINTN Seg,
IN UINT8 Bus,
IN UINT8 Dev,
IN UINT8 Func,
IN VOID *RomImage,
IN UINT64 RomSize
)
{
UINTN Index;
PCI_ROM_IMAGE *NewTable;
for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
if (mRomImageTable[Index].Seg == Seg &&
mRomImageTable[Index].Bus == Bus &&
mRomImageTable[Index].Dev == Dev &&
mRomImageTable[Index].Func == Func) {
//
// Expect once RomImage and RomSize are recorded, they will be passed in
// later when updating ImageHandle
//
ASSERT ((mRomImageTable[Index].RomImage == NULL) || (RomImage == mRomImageTable[Index].RomImage));
ASSERT ((mRomImageTable[Index].RomSize == 0 ) || (RomSize == mRomImageTable[Index].RomSize ));
break;
}
}
if (Index == mNumberOfPciRomImages) {
//
// Rom Image Table buffer needs to grow.
//
if (mNumberOfPciRomImages == mMaxNumberOfPciRomImages) {
NewTable = ReallocatePool (
mMaxNumberOfPciRomImages * sizeof (PCI_ROM_IMAGE),
(mMaxNumberOfPciRomImages + 0x20) * sizeof (PCI_ROM_IMAGE),
mRomImageTable
);
if (NewTable == NULL) {
return ;
}
mRomImageTable = NewTable;
mMaxNumberOfPciRomImages += 0x20;
}
//
// Record the new PCI device
//
mRomImageTable[Index].Seg = Seg;
mRomImageTable[Index].Bus = Bus;
mRomImageTable[Index].Dev = Dev;
mRomImageTable[Index].Func = Func;
mNumberOfPciRomImages++;
}
mRomImageTable[Index].ImageHandle = ImageHandle;
mRomImageTable[Index].RomImage = RomImage;
mRomImageTable[Index].RomSize = RomSize;
}
/**
Get Option rom driver's mapping for PCI device.
@param PciIoDevice Device instance.
@retval TRUE Found Image mapping.
@retval FALSE Cannot found image mapping.
**/
BOOLEAN
PciRomGetImageMapping (
IN PCI_IO_DEVICE *PciIoDevice
)
{
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo;
UINTN Index;
PciRootBridgeIo = PciIoDevice->PciRootBridgeIo;
for (Index = 0; Index < mNumberOfPciRomImages; Index++) {
if (mRomImageTable[Index].Seg == PciRootBridgeIo->SegmentNumber &&
mRomImageTable[Index].Bus == PciIoDevice->BusNumber &&
mRomImageTable[Index].Dev == PciIoDevice->DeviceNumber &&
mRomImageTable[Index].Func == PciIoDevice->FunctionNumber ) {
if (mRomImageTable[Index].ImageHandle != NULL) {
AddDriver (PciIoDevice, mRomImageTable[Index].ImageHandle, NULL);
}
PciIoDevice->PciIo.RomImage = mRomImageTable[Index].RomImage;
PciIoDevice->PciIo.RomSize = mRomImageTable[Index].RomSize;
return TRUE;
}
}
return FALSE;
}
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