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