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/** @file
Collect IDE information from Native EFI Driver
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "LegacyBiosInterface.h"
BOOLEAN mIdeDataBuiltFlag = FALSE;
/**
Collect IDE Inquiry data from the IDE disks
@param Private Legacy BIOS Instance data
@param HddInfo Hdd Information
@param Flag Reconnect IdeController or not
@retval EFI_SUCCESS It should always work.
**/
EFI_STATUS
LegacyBiosBuildIdeData (
IN LEGACY_BIOS_INSTANCE *Private,
IN HDD_INFO **HddInfo,
IN UINT16 Flag
)
{
EFI_STATUS Status;
EFI_HANDLE IdeController;
UINTN HandleCount;
EFI_HANDLE *HandleBuffer;
UINTN Index;
EFI_DISK_INFO_PROTOCOL *DiskInfo;
UINT32 IdeChannel;
UINT32 IdeDevice;
UINT32 Size;
UINT8 *InquiryData;
UINT32 InquiryDataSize;
HDD_INFO *LocalHddInfo;
UINT32 PciIndex;
EFI_DEVICE_PATH_PROTOCOL *DevicePath;
EFI_DEVICE_PATH_PROTOCOL *DevicePathNode;
EFI_DEVICE_PATH_PROTOCOL *TempDevicePathNode;
PCI_DEVICE_PATH *PciDevicePath;
//
// Only build data once
// We have a problem with GetBbsInfo in that it can be invoked two
// places. Once in BDS, when all EFI drivers are connected and once in
// LegacyBoot after all EFI drivers are disconnected causing this routine
// to hang. In LegacyBoot this function is also called before EFI drivers
// are disconnected.
// Cases covered
// GetBbsInfo invoked in BDS. Both invocations in LegacyBoot ignored.
// GetBbsInfo not invoked in BDS. First invocation of this function
// proceeds normally and second via GetBbsInfo ignored.
//
PciDevicePath = NULL;
LocalHddInfo = *HddInfo;
Status = Private->LegacyBiosPlatform->GetPlatformHandle (
Private->LegacyBiosPlatform,
EfiGetPlatformIdeHandle,
0,
&HandleBuffer,
&HandleCount,
(VOID *) &LocalHddInfo
);
if (!EFI_ERROR (Status)) {
IdeController = HandleBuffer[0];
//
// Force IDE drive spin up!
//
if (Flag != 0) {
gBS->DisconnectController (
IdeController,
NULL,
NULL
);
}
gBS->ConnectController (IdeController, NULL, NULL, FALSE);
//
// Do GetIdeHandle twice since disconnect/reconnect will switch to native mode
// And GetIdeHandle will switch to Legacy mode, if required.
//
Private->LegacyBiosPlatform->GetPlatformHandle (
Private->LegacyBiosPlatform,
EfiGetPlatformIdeHandle,
0,
&HandleBuffer,
&HandleCount,
(VOID *) &LocalHddInfo
);
}
mIdeDataBuiltFlag = TRUE;
//
// Get Identity command from all drives
//
gBS->LocateHandleBuffer (
ByProtocol,
&gEfiDiskInfoProtocolGuid,
NULL,
&HandleCount,
&HandleBuffer
);
Private->IdeDriveCount = (UINT8) HandleCount;
for (Index = 0; Index < HandleCount; Index++) {
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gEfiDiskInfoProtocolGuid,
(VOID **) &DiskInfo
);
ASSERT_EFI_ERROR (Status);
if (CompareGuid (&DiskInfo->Interface, &gEfiDiskInfoIdeInterfaceGuid)) {
//
// Locate which PCI device
//
Status = gBS->HandleProtocol (
HandleBuffer[Index],
&gEfiDevicePathProtocolGuid,
(VOID *) &DevicePath
);
ASSERT_EFI_ERROR (Status);
DevicePathNode = DevicePath;
while (!IsDevicePathEnd (DevicePathNode)) {
TempDevicePathNode = NextDevicePathNode (DevicePathNode);
if ((DevicePathType (DevicePathNode) == HARDWARE_DEVICE_PATH) &&
( DevicePathSubType (DevicePathNode) == HW_PCI_DP) &&
( DevicePathType(TempDevicePathNode) == MESSAGING_DEVICE_PATH) &&
( DevicePathSubType(TempDevicePathNode) == MSG_ATAPI_DP) ) {
PciDevicePath = (PCI_DEVICE_PATH *) DevicePathNode;
break;
}
DevicePathNode = NextDevicePathNode (DevicePathNode);
}
if (PciDevicePath == NULL) {
continue;
}
//
// Find start of PCI device in HddInfo. The assumption of the data
// structure is 2 controllers(channels) per PCI device and each
// controller can have 2 drives(devices).
// HddInfo[PciIndex+0].[0] = Channel[0].Device[0] Primary Master
// HddInfo[PciIndex+0].[1] = Channel[0].Device[1] Primary Slave
// HddInfo[PciIndex+1].[0] = Channel[1].Device[0] Secondary Master
// HddInfo[PciIndex+1].[1] = Channel[1].Device[1] Secondary Slave
// @bug eventually need to pass in max number of entries
// for end of for loop
//
for (PciIndex = 0; PciIndex < 8; PciIndex++) {
if ((PciDevicePath->Device == LocalHddInfo[PciIndex].Device) &&
(PciDevicePath->Function == LocalHddInfo[PciIndex].Function)
) {
break;
}
}
if (PciIndex == 8) {
continue;
}
Status = DiskInfo->WhichIde (DiskInfo, &IdeChannel, &IdeDevice);
if (!EFI_ERROR (Status)) {
Size = sizeof (ATAPI_IDENTIFY);
DiskInfo->Identify (
DiskInfo,
&LocalHddInfo[PciIndex + IdeChannel].IdentifyDrive[IdeDevice],
&Size
);
if (IdeChannel == 0) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_PRIMARY;
} else if (IdeChannel == 1) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SECONDARY;
}
InquiryData = NULL;
InquiryDataSize = 0;
Status = DiskInfo->Inquiry (
DiskInfo,
NULL,
&InquiryDataSize
);
if (Status == EFI_BUFFER_TOO_SMALL) {
InquiryData = (UINT8 *) AllocatePool (
InquiryDataSize
);
if (InquiryData != NULL) {
Status = DiskInfo->Inquiry (
DiskInfo,
InquiryData,
&InquiryDataSize
);
}
} else {
Status = EFI_DEVICE_ERROR;
}
//
// If ATAPI device then Inquiry will pass and ATA fail.
//
if (!EFI_ERROR (Status)) {
ASSERT (InquiryData != NULL);
//
// If IdeDevice = 0 then set master bit, else slave bit
//
if (IdeDevice == 0) {
if ((InquiryData[0] & 0x1f) == 0x05) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_ATAPI_CDROM;
} else if ((InquiryData[0] & 0x1f) == 0x00) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_ATAPI_ZIPDISK;
}
} else {
if ((InquiryData[0] & 0x1f) == 0x05) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_ATAPI_CDROM;
} else if ((InquiryData[0] & 0x1f) == 0x00) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_ATAPI_ZIPDISK;
}
}
FreePool (InquiryData);
} else {
if (IdeDevice == 0) {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_MASTER_IDE;
} else {
LocalHddInfo[PciIndex + IdeChannel].Status |= HDD_SLAVE_IDE;
}
}
}
}
}
if (HandleBuffer != NULL) {
FreePool (HandleBuffer);
}
return EFI_SUCCESS;
}
/**
If the IDE channel is in compatibility (legacy) mode, remove all
PCI I/O BAR addresses from the controller.
@param IdeController The handle of target IDE controller
**/
VOID
InitLegacyIdeController (
IN EFI_HANDLE IdeController
)
{
EFI_PCI_IO_PROTOCOL *PciIo;
UINT32 IOBarClear;
EFI_STATUS Status;
PCI_TYPE00 PciData;
//
// If the IDE channel is in compatibility (legacy) mode, remove all
// PCI I/O BAR addresses from the controller. Some software gets
// confused if an IDE controller is in compatibility (legacy) mode
// and has PCI I/O resources allocated
//
Status = gBS->HandleProtocol (
IdeController,
&gEfiPciIoProtocolGuid,
(VOID **)&PciIo
);
if (EFI_ERROR (Status)) {
return ;
}
Status = PciIo->Pci.Read (PciIo, EfiPciIoWidthUint8, 0, sizeof (PciData), &PciData);
if (EFI_ERROR (Status)) {
return ;
}
//
// Check whether this is IDE
//
if ((PciData.Hdr.ClassCode[2] != PCI_CLASS_MASS_STORAGE) ||
(PciData.Hdr.ClassCode[1] != PCI_CLASS_MASS_STORAGE_IDE)) {
return ;
}
//
// Clear bar for legacy IDE
//
IOBarClear = 0x00;
if ((PciData.Hdr.ClassCode[0] & IDE_PI_REGISTER_PNE) == 0) {
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x10, 1, &IOBarClear);
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x14, 1, &IOBarClear);
}
if ((PciData.Hdr.ClassCode[0] & IDE_PI_REGISTER_SNE) == 0) {
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x18, 1, &IOBarClear);
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint32, 0x1C, 1, &IOBarClear);
}
return ;
}
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