From: Duke Zhai <Duke.Zhai@amd.com>
BZ #:4640
In V3: Improve coding style follow edk2 C coding standard.
1.Remove macro definition extra underscores.
2.Putting some AMD copyright in the right place.
In V2: Improve coding style.
1.Remove the leading underscore and use double underscore at trailing in C header files.
2.Remove old tianocore licenses and redundant license description.
3.Improve coding style. For example: remove space between @param.
In V1:
Initial PciHostBridge module. Provides the basic interfaces to abstract
a PCI Host Bridge Resource Allocation.
Signed-off-by: Duke Zhai <duke.zhai@amd.com>
Cc: Eric Xing <eric.xing@amd.com>
Cc: Ken Yao <ken.yao@amd.com>
Cc: Igniculus Fu <igniculus.fu@amd.com>
Cc: Abner Chang <abner.chang@amd.com>
---
.../Bus/Pci/PciHostBridgeDxe/IoFifo.h | 170 ++
.../Bus/Pci/PciHostBridgeDxe/PciHostBridge.c | 1370 ++++++++++
.../Bus/Pci/PciHostBridgeDxe/PciHostBridge.h | 624 +++++
.../Pci/PciHostBridgeDxe/PciHostBridge.uni | Bin 0 -> 1290 bytes
.../Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf | 54 +
.../PciHostBridgeDxe/PciHostBridgeExtra.uni | Bin 0 -> 826 bytes
.../Pci/PciHostBridgeDxe/PciRootBridgeIo.c | 2421 +++++++++++++++++
7 files changed, 4639 insertions(+)
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/IoFifo.h
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.h
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.uni
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeExtra.uni
create mode 100644 Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c
diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/IoFifo.h b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/IoFifo.h
new file mode 100644
index 0000000000..cd6ed34f22
--- /dev/null
+++ b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/IoFifo.h
@@ -0,0 +1,170 @@
+/** @file
+ Implementation of IoFifo.h
+ I/O FIFO routines
+
+ Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
+ Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef IO_FIFO_H_INCLUDED_
+#define IO_FIFO_H_INCLUDED_
+
+/**
+ Reads an 8-bit I/O port fifo into a block of memory.
+
+ Reads the 8-bit I/O fifo port specified by Port.
+
+ The port is read Count times, and the read data is
+ stored in the provided Buffer.
+
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 8-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+ @param Count The number of times to read I/O port.
+ @param Buffer The buffer to store the read data into.
+
+**/
+VOID
+EFIAPI
+IoReadFifo8 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Reads a 16-bit I/O port fifo into a block of memory.
+
+ Reads the 16-bit I/O fifo port specified by Port.
+
+ The port is read Count times, and the read data is
+ stored in the provided Buffer.
+
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 16-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+ @param Count The number of times to read I/O port.
+ @param Buffer The buffer to store the read data into.
+
+**/
+VOID
+EFIAPI
+IoReadFifo16 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Reads a 32-bit I/O port fifo into a block of memory.
+
+ Reads the 32-bit I/O fifo port specified by Port.
+
+ The port is read Count times, and the read data is
+ stored in the provided Buffer.
+
+ This function must guarantee that all I/O read and write operations are
+ serialized.
+
+ If 32-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to read.
+ @param Count The number of times to read I/O port.
+ @param Buffer The buffer to store the read data into.
+
+**/
+VOID
+EFIAPI
+IoReadFifo32 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Writes a block of memory into an 8-bit I/O port fifo.
+
+ Writes the 8-bit I/O fifo port specified by Port.
+
+ The port is written Count times, and the write data is
+ retrieved from the provided Buffer.
+
+ This function must guarantee that all I/O write and write operations are
+ serialized.
+
+ If 8-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Count The number of times to write I/O port.
+ @param Buffer The buffer to store the write data into.
+
+**/
+VOID
+EFIAPI
+IoWriteFifo8 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Writes a block of memory into a 16-bit I/O port fifo.
+
+ Writes the 16-bit I/O fifo port specified by Port.
+
+ The port is written Count times, and the write data is
+ retrieved from the provided Buffer.
+
+ This function must guarantee that all I/O write and write operations are
+ serialized.
+
+ If 16-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Count The number of times to write I/O port.
+ @param Buffer The buffer to store the write data into.
+
+**/
+VOID
+EFIAPI
+IoWriteFifo16 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Writes a block of memory into a 32-bit I/O port fifo.
+
+ Writes the 32-bit I/O fifo port specified by Port.
+
+ The port is written Count times, and the write data is
+ retrieved from the provided Buffer.
+
+ This function must guarantee that all I/O write and write operations are
+ serialized.
+
+ If 32-bit I/O port operations are not supported, then ASSERT().
+
+ @param Port The I/O port to write.
+ @param Count The number of times to write I/O port.
+ @param Buffer The buffer to store the write data into.
+
+**/
+VOID
+EFIAPI
+IoWriteFifo32 (
+ IN UINTN Port,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+#endif
diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
new file mode 100644
index 0000000000..6fc9b22b8f
--- /dev/null
+++ b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.c
@@ -0,0 +1,1370 @@
+/** @file
+ Implementation of PciHostBridge.c
+ Provides the basic interfaces to abstract a PCI Host Bridge Resource
+ Allocation
+
+ Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
+ Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "PciHostBridge.h"
+#define TOP_MEM 0xC001001Aul
+
+//
+// Hard code: Root Bridge Number within the host bridge
+// Root Bridge's attribute
+// Root Bridge's device path
+// Root Bridge's resource aperture
+//
+UINTN RootBridgeNumber[1] = { 1 };
+
+UINT64 RootBridgeAttribute[1][1] = {
+ { EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM }
+};
+
+EFI_PCI_ROOT_BRIDGE_DEVICE_PATH mEfiPciRootBridgeDevicePath[1][1] = {
+ {
+ {
+ {
+ {
+ ACPI_DEVICE_PATH,
+ ACPI_DP,
+ {
+ (UINT8)(sizeof (ACPI_HID_DEVICE_PATH)),
+ (UINT8)((sizeof (ACPI_HID_DEVICE_PATH)) >> 8)
+ }
+ },
+ EISA_PNP_ID (0x0A03),
+ 0
+ },
+
+ {
+ END_DEVICE_PATH_TYPE,
+ END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ {
+ END_DEVICE_PATH_LENGTH,
+ 0
+ }
+ }
+ }
+ }
+};
+
+PCI_ROOT_BRIDGE_RESOURCE_APERTURE mResAperture[1][1] = {
+ {
+ { 0, 0xff, 0xE0000000, 0xffffffff, 0, 0xffff }
+ }
+};
+
+EFI_HANDLE mDriverImageHandle;
+
+PCI_HOST_BRIDGE_INSTANCE mPciHostBridgeInstanceTemplate = {
+ PCI_HOST_BRIDGE_SIGNATURE, // Signature
+ NULL, // HostBridgeHandle
+ 0, // RootBridgeNumber
+ { NULL, NULL }, // Head
+ FALSE, // ResourceSubiteed
+ TRUE, // CanRestarted
+ {
+ NotifyPhase,
+ GetNextRootBridge,
+ GetAttributes,
+ StartBusEnumeration,
+ SetBusNumbers,
+ SubmitResources,
+ GetProposedResources,
+ PreprocessController
+ }
+};
+
+//
+// Implementation
+//
+
+/**
+ Entry point of this driver
+
+ @param ImageHandle Handle of driver image
+ @param SystemTable Point to EFI_SYSTEM_TABLE
+
+ @retval EFI_OUT_OF_RESOURCES Can not allocate memory resource
+ @retval EFI_DEVICE_ERROR Can not install the protocol instance
+ @retval EFI_SUCCESS Success to initialize the Pci host bridge.
+**/
+EFI_STATUS
+EFIAPI
+InitializePciHostBridge (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ UINTN Loop1;
+ UINTN Loop2;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridge;
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ EFI_PHYSICAL_ADDRESS TopOfLowMem;
+
+ mDriverImageHandle = ImageHandle;
+ TopOfLowMem = AsmReadMsr64 (TOP_MEM);
+ mResAperture[0][0].MemBase = TopOfLowMem;
+
+ //
+ // Create Host Bridge Device Handle
+ //
+ for (Loop1 = 0; Loop1 < HOST_BRIDGE_NUMBER; Loop1++) {
+ HostBridge = AllocateCopyPool (
+ sizeof (PCI_HOST_BRIDGE_INSTANCE),
+ &mPciHostBridgeInstanceTemplate
+ );
+ if (HostBridge == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ HostBridge->RootBridgeNumber = RootBridgeNumber[Loop1];
+ InitializeListHead (&HostBridge->Head);
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &HostBridge->HostBridgeHandle,
+ &gEfiPciHostBridgeResourceAllocationProtocolGuid,
+ &HostBridge->ResAlloc,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (HostBridge);
+ return EFI_DEVICE_ERROR;
+ }
+
+ //
+ // Create Root Bridge Device Handle in this Host Bridge
+ //
+
+ for (Loop2 = 0; Loop2 < HostBridge->RootBridgeNumber; Loop2++) {
+ PrivateData = AllocateZeroPool (sizeof (PCI_ROOT_BRIDGE_INSTANCE));
+ if (PrivateData == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ PrivateData->Signature = PCI_ROOT_BRIDGE_SIGNATURE;
+ PrivateData->DevicePath =
+ (EFI_DEVICE_PATH_PROTOCOL *)&mEfiPciRootBridgeDevicePath[Loop1][Loop2];
+
+ RootBridgeConstructor (
+ &PrivateData->Io,
+ HostBridge->HostBridgeHandle,
+ RootBridgeAttribute[Loop1][Loop2],
+ &mResAperture[Loop1][Loop2]
+ );
+
+ Status = gBS->InstallMultipleProtocolInterfaces (
+ &PrivateData->Handle,
+ &gEfiDevicePathProtocolGuid,
+ PrivateData->DevicePath,
+ &gEfiPciRootBridgeIoProtocolGuid,
+ &PrivateData->Io,
+ NULL
+ );
+ if (EFI_ERROR (Status)) {
+ FreePool (PrivateData);
+ return EFI_DEVICE_ERROR;
+ }
+
+ InsertTailList (&HostBridge->Head, &PrivateData->Link);
+ }
+ }
+
+ Status = gDS->AddIoSpace (
+ EfiGcdIoTypeIo,
+ 0x2000,
+ 0xFFFF-0x2000
+ );
+ ASSERT_EFI_ERROR (Status);
+ TopOfLowMem = AsmReadMsr64 (TOP_MEM);
+ Status = gDS->AddMemorySpace (
+ EfiGcdMemoryTypeMemoryMappedIo,
+ TopOfLowMem,
+ 0xF8000000-TopOfLowMem,
+ 0
+ );
+
+ return EFI_SUCCESS;
+}
+
+/**
+ These are the notifications from the PCI bus driver that it is about to enter
+ a certain phase of the PCI enumeration process.
+
+ This member function can be used to notify the host bridge driver to perform
+ specific actions, including any chipset-specific initialization, so that the
+ chipset is ready to enter the next phase. Eight notification points are
+ defined at this time. See belows:
+
+ EfiPciHostBridgeBeginEnumeration Resets the host bridge PCI apertures
+ and internal data structures. The PCI
+ enumerator should issue this
+ notification before starting a fresh
+ enumeration process. Enumeration
+ cannot be restarted after sending any
+ other notification such as
+ EfiPciHostBridgeBeginBusAllocation.
+
+ EfiPciHostBridgeBeginBusAllocation The bus allocation phase is about to
+ begin. No specific action is required
+ here. This notification can be used to
+ perform any chipset-specific
+ programming.
+
+ EfiPciHostBridgeEndBusAllocation The bus allocation and bus programming
+ phase is complete. No specific action
+ is required here. This notification
+ can be used to perform any
+ chipset-specific programming.
+
+ EfiPciHostBridgeBeginResourceAllocation
+ The resource allocation phase is about
+ to begin. No specific action is
+ required here. This notification can
+ be used to perform any
+ chipset-specific programming.
+
+ EfiPciHostBridgeAllocateResources Allocates resources per previously
+ submitted requests for all the PCI
+ root bridges. These resource settings
+ are returned on the next call to
+ GetProposedResources(). Before calling
+ NotifyPhase() with a Phase of
+ EfiPciHostBridgeAllocateResource, the
+ PCI bus enumerator is responsible for
+ gathering I/O and memory requests for
+ all the PCI root bridges and
+ submitting these requests using
+ SubmitResources(). This function pads
+ the resource amount to suit the root
+ bridge hardware, takes care of
+ dependencies between the PCI root
+ bridges, and calls the Global
+ Coherency Domain (GCD) with the
+ allocation request. In the case of
+ padding, the allocated range could be
+ bigger than what was requested.
+
+ EfiPciHostBridgeSetResources Programs the host bridge hardware to
+ decode previously allocated resources
+ (proposed resources) for all the PCI
+ root bridges. After the hardware is
+ programmed, reassigning resources will
+ not be supported. The bus settings are
+ not affected.
+
+ EfiPciHostBridgeFreeResources Deallocates resources that were
+ previously allocated for all the PCI
+ root bridges and resets the I/O and
+ memory apertures to their initial
+ state. The bus settings are not
+ affected. If the request to allocate
+ resources fails, the PCI enumerator
+ can use this notification to
+ deallocate previous resources, adjust
+ the requests, and retry allocation.
+
+ EfiPciHostBridgeEndResourceAllocation The resource allocation phase is
+ completed. No specific action is
+ required here. This notification can
+ be used to perform any chipsetspecific
+ programming.
+
+ @param[in] This The instance pointer of
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ @param[in] Phase The phase during enumeration
+
+ @retval EFI_NOT_READY This phase cannot be entered at this time. For
+ example, this error is valid for a Phase of
+ EfiPciHostBridgeAllocateResources if
+ SubmitResources() has not been called for one
+ or more PCI root bridges before this call
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+ This error is valid for a Phase of
+ EfiPciHostBridgeSetResources.
+ @retval EFI_INVALID_PARAMETER Invalid phase parameter
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources. This error is valid for a
+ Phase of EfiPciHostBridgeAllocateResources if
+ the previously submitted resource requests
+ cannot be fulfilled or were only partially
+ fulfilled.
+ @retval EFI_SUCCESS The notification was accepted without any
+ errors.
+**/
+EFI_STATUS
+EFIAPI
+NotifyPhase (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase
+ )
+{
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+ PCI_RESOURCE_TYPE Index;
+ LIST_ENTRY *List;
+ EFI_PHYSICAL_ADDRESS BaseAddress;
+ UINT64 AddrLen;
+ UINTN BitsOfAlignment;
+ EFI_STATUS Status;
+ EFI_STATUS ReturnStatus;
+
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+
+ switch (Phase) {
+ case EfiPciHostBridgeBeginEnumeration:
+ if (HostBridgeInstance->CanRestarted) {
+ //
+ // Reset the Each Root Bridge
+ //
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ for (Index = TypeIo; Index < TypeMax; Index++) {
+ RootBridgeInstance->ResAllocNode[Index].Type = Index;
+ RootBridgeInstance->ResAllocNode[Index].Base = 0;
+ RootBridgeInstance->ResAllocNode[Index].Length = 0;
+ RootBridgeInstance->ResAllocNode[Index].Status = ResNone;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ HostBridgeInstance->ResourceSubmited = FALSE;
+ HostBridgeInstance->CanRestarted = TRUE;
+ } else {
+ //
+ // Can not restart
+ //
+ return EFI_NOT_READY;
+ }
+
+ break;
+
+ case EfiPciHostBridgeEndEnumeration:
+ break;
+
+ case EfiPciHostBridgeBeginBusAllocation:
+ //
+ // No specific action is required here, can perform any chipset specific
+ // programing
+ //
+ HostBridgeInstance->CanRestarted = FALSE;
+ break;
+
+ case EfiPciHostBridgeEndBusAllocation:
+ //
+ // No specific action is required here, can perform any chipset specific
+ // programing
+ //
+ // HostBridgeInstance->CanRestarted = FALSE;
+ break;
+
+ case EfiPciHostBridgeBeginResourceAllocation:
+ //
+ // No specific action is required here, can perform any chipset specific
+ // programing
+ //
+ // HostBridgeInstance->CanRestarted = FALSE;
+ break;
+
+ case EfiPciHostBridgeAllocateResources:
+ ReturnStatus = EFI_SUCCESS;
+ if (HostBridgeInstance->ResourceSubmited) {
+ //
+ // Take care of the resource dependencies between the root bridges
+ //
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ for (Index = TypeIo; Index < TypeBus; Index++) {
+ if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone) {
+ AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
+
+ //
+ // Get the number of '1' in Alignment.
+ //
+ BitsOfAlignment =
+ (UINTN)(HighBitSet64 (
+ RootBridgeInstance->ResAllocNode[Index].Alignment
+ ) + 1);
+
+ switch (Index) {
+ case TypeIo:
+ //
+ // It is impossible for this chipset to align 0xFFFF for IO16
+ // So clear it
+ //
+ if (BitsOfAlignment >= 16) {
+ BitsOfAlignment = 0;
+ }
+
+ Status = gDS->AllocateIoSpace (
+ EfiGcdAllocateAnySearchBottomUp,
+ EfiGcdIoTypeIo,
+ BitsOfAlignment,
+ AddrLen,
+ &BaseAddress,
+ mDriverImageHandle,
+ NULL
+ );
+
+ if (!EFI_ERROR (Status)) {
+ RootBridgeInstance->ResAllocNode[Index].Base =
+ (UINTN)BaseAddress;
+ RootBridgeInstance->ResAllocNode[Index].Status =
+ ResAllocated;
+ } else {
+ ReturnStatus = Status;
+ if (Status != EFI_OUT_OF_RESOURCES) {
+ RootBridgeInstance->ResAllocNode[Index].Length = 0;
+ }
+ }
+
+ break;
+
+ case TypeMem32:
+ //
+ // It is impossible for this chipset to align 0xFFFFFFFF for
+ // Mem32
+ // So clear it
+ //
+
+ if (BitsOfAlignment >= 32) {
+ BitsOfAlignment = 0;
+ }
+
+ Status = gDS->AllocateMemorySpace (
+ EfiGcdAllocateAnySearchBottomUp,
+ EfiGcdMemoryTypeMemoryMappedIo,
+ BitsOfAlignment,
+ AddrLen,
+ &BaseAddress,
+ mDriverImageHandle,
+ NULL
+ );
+
+ if (!EFI_ERROR (Status)) {
+ // We were able to allocate the PCI memory
+ RootBridgeInstance->ResAllocNode[Index].Base =
+ (UINTN)BaseAddress;
+ RootBridgeInstance->ResAllocNode[Index].Status =
+ ResAllocated;
+ } else {
+ // Not able to allocate enough PCI memory
+ ReturnStatus = Status;
+
+ if (Status != EFI_OUT_OF_RESOURCES) {
+ RootBridgeInstance->ResAllocNode[Index].Length = 0;
+ }
+
+ ASSERT (FALSE);
+ }
+
+ break;
+
+ case TypePMem32:
+ case TypeMem64:
+ case TypePMem64:
+ ReturnStatus = EFI_ABORTED;
+ break;
+ default:
+ ASSERT (FALSE);
+ break;
+ } // end switch
+ }
+ }
+
+ List = List->ForwardLink;
+ }
+
+ return ReturnStatus;
+ } else {
+ return EFI_NOT_READY;
+ }
+
+ break;
+
+ case EfiPciHostBridgeSetResources:
+ break;
+
+ case EfiPciHostBridgeFreeResources:
+ ReturnStatus = EFI_SUCCESS;
+ List = HostBridgeInstance->Head.ForwardLink;
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ for (Index = TypeIo; Index < TypeBus; Index++) {
+ if (RootBridgeInstance->ResAllocNode[Index].Status == ResAllocated) {
+ AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
+ BaseAddress = RootBridgeInstance->ResAllocNode[Index].Base;
+ switch (Index) {
+ case TypeIo:
+ Status = gDS->FreeIoSpace (BaseAddress, AddrLen);
+ if (EFI_ERROR (Status)) {
+ ReturnStatus = Status;
+ }
+
+ break;
+
+ case TypeMem32:
+ Status = gDS->FreeMemorySpace (BaseAddress, AddrLen);
+ if (EFI_ERROR (Status)) {
+ ReturnStatus = Status;
+ }
+
+ break;
+
+ case TypePMem32:
+ break;
+
+ case TypeMem64:
+ break;
+
+ case TypePMem64:
+ break;
+
+ default:
+ ASSERT (FALSE);
+ break;
+ } // end switch
+
+ RootBridgeInstance->ResAllocNode[Index].Type = Index;
+ RootBridgeInstance->ResAllocNode[Index].Base = 0;
+ RootBridgeInstance->ResAllocNode[Index].Length = 0;
+ RootBridgeInstance->ResAllocNode[Index].Status = ResNone;
+ }
+ }
+
+ List = List->ForwardLink;
+ }
+
+ HostBridgeInstance->ResourceSubmited = FALSE;
+ HostBridgeInstance->CanRestarted = TRUE;
+ return ReturnStatus;
+
+ case EfiPciHostBridgeEndResourceAllocation:
+ HostBridgeInstance->CanRestarted = FALSE;
+ break;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Return the device handle of the next PCI root bridge that is associated with
+ this Host Bridge.
+
+ This function is called multiple times to retrieve the device handles of all
+ the PCI root bridges that are associated with this PCI host bridge. Each PCI
+ host bridge is associated with one or more PCI root bridges. On each call,
+ the handle that was returned by the previous call is passed into the
+ interface, and on output the interface returns the device handle of the next
+ PCI root bridge. The caller can use the handle to obtain the instance of the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL for that root bridge. When there are no more
+ PCI root bridges to report, the interface returns EFI_NOT_FOUND. A PCI
+ enumerator must enumerate the PCI root bridges in the order that they are
+ returned by this function.
+
+ For D945 implementation, there is only one root bridge in PCI host bridge.
+
+ @param[in] This The instance pointer of
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ @param[in, out] RootBridgeHandle Returns the device handle of the next PCI
+ root bridge.
+
+ @retval EFI_SUCCESS If parameter RootBridgeHandle = NULL, then
+ return the first Rootbridge handle of the
+ specific Host bridge and return EFI_SUCCESS.
+ @retval EFI_NOT_FOUND Can not find the any more root bridge in
+ specific host bridge.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not an EFI_HANDLE that was
+ returned on a previous call to
+ GetNextRootBridge().
+**/
+EFI_STATUS
+EFIAPI
+GetNextRootBridge (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN OUT EFI_HANDLE *RootBridgeHandle
+ )
+{
+ BOOLEAN NoRootBridge;
+ LIST_ENTRY *List;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+
+ NoRootBridge = TRUE;
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ while (List != &HostBridgeInstance->Head) {
+ NoRootBridge = FALSE;
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (*RootBridgeHandle == NULL) {
+ //
+ // Return the first Root Bridge Handle of the Host Bridge
+ //
+ *RootBridgeHandle = RootBridgeInstance->Handle;
+ return EFI_SUCCESS;
+ } else {
+ if (*RootBridgeHandle == RootBridgeInstance->Handle) {
+ //
+ // Get next if have
+ //
+ List = List->ForwardLink;
+ if (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ *RootBridgeHandle = RootBridgeInstance->Handle;
+ return EFI_SUCCESS;
+ } else {
+ return EFI_NOT_FOUND;
+ }
+ }
+ }
+
+ List = List->ForwardLink;
+ } // end while
+
+ if (NoRootBridge) {
+ return EFI_NOT_FOUND;
+ } else {
+ return EFI_INVALID_PARAMETER;
+ }
+}
+
+/**
+ Returns the allocation attributes of a PCI root bridge.
+
+ The function returns the allocation attributes of a specific PCI root bridge.
+ The attributes can vary from one PCI root bridge to another. These attributes
+ are different from the decode-related attributes that are returned by the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member function. The
+ RootBridgeHandle parameter is used to specify the instance of the PCI root
+ bridge. The device handles of all the root bridges that are associated with
+ this host bridge must be obtained by calling GetNextRootBridge(). The
+ attributes are static in the sense that they do not change during or after
+ the enumeration process. The hardware may provide mechanisms to change the
+ attributes on the fly, but such changes must be completed before
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is installed. The permitted
+ values of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are defined in
+ "Related Definitions" below. The caller uses these attributes to combine
+ multiple resource requests.
+
+ For example, if the flag EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is set, the PCI
+ bus enumerator needs to include requests for the prefetchable memory in the
+ nonprefetchable memory pool and not request any prefetchable memory.
+
+ Attribute Description
+ ------------------------------------ ---------------------------------------
+ EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM If this bit is set, then the PCI root
+ bridge does not support separate
+ windows for nonprefetchable and
+ prefetchable memory. A PCI bus driver
+ needs to include requests for
+ prefetchable memory in the
+ nonprefetchable memory pool.
+
+ EFI_PCI_HOST_BRIDGE_MEM64_DECODE If this bit is set, then the PCI root
+ bridge supports 64-bit memory windows.
+ If this bit is not set, the PCI bus
+ driver needs to include requests for a
+ 64-bit memory address in the
+ corresponding 32-bit memory pool.
+
+ @param[in] This The instance pointer of
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ @param[in] RootBridgeHandle The device handle of the PCI root bridge in
+ which the caller is interested. Type
+ EFI_HANDLE is defined in
+ InstallProtocolInterface() in the UEFI 2.0
+ Specification.
+ @param[out] Attributes The pointer to attribte of root bridge, it is
+ output parameter
+
+ @retval EFI_INVALID_PARAMETER Attribute pointer is NULL
+ @retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
+ @retval EFI_SUCCESS Success to get attribute of interested root
+ bridge.
+**/
+EFI_STATUS
+EFIAPI
+GetAttributes (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT UINT64 *Attributes
+ )
+{
+ LIST_ENTRY *List;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+
+ if (Attributes == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (RootBridgeHandle == RootBridgeInstance->Handle) {
+ *Attributes = RootBridgeInstance->RootBridgeAttrib;
+ return EFI_SUCCESS;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ //
+ // RootBridgeHandle is not an EFI_HANDLE
+ // that was returned on a previous call to GetNextRootBridge()
+ //
+ return EFI_INVALID_PARAMETER;
+}
+
+/**
+ Sets up the specified PCI root bridge for the bus enumeration process.
+
+ This member function sets up the root bridge for bus enumeration and returns
+ the PCI bus range over which the search should be performed in ACPI 2.0
+ resource descriptor format.
+
+ @param[in] This The
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param[in] RootBridgeHandle The PCI Root Bridge to be set up.
+ @param[out] Configuration Pointer to the pointer to the PCI bus resource
+ descriptor.
+
+ @retval EFI_INVALID_PARAMETER Invalid Root bridge's handle
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource descriptor tag.
+ @retval EFI_SUCCESS Sucess to allocate ACPI resource descriptor.
+**/
+EFI_STATUS
+EFIAPI
+StartBusEnumeration (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT VOID **Configuration
+ )
+{
+ LIST_ENTRY *List;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+ VOID *Buffer;
+ UINT8 *Temp;
+ UINT64 BusStart;
+ UINT64 BusEnd;
+
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (RootBridgeHandle == RootBridgeInstance->Handle) {
+ //
+ // Set up the Root Bridge for Bus Enumeration
+ //
+ BusStart = RootBridgeInstance->BusBase;
+ BusEnd = RootBridgeInstance->BusLimit;
+ //
+ // Program the Hardware(if needed) if error return EFI_DEVICE_ERROR
+ //
+
+ Buffer = AllocatePool (
+ sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
+ sizeof (EFI_ACPI_END_TAG_DESCRIPTOR)
+ );
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Temp = (UINT8 *)Buffer;
+
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->Desc = 0x8A;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->Len = 0x2B;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->ResType = 2;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->GenFlag = 0;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->SpecificFlag = 0;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrSpaceGranularity = 0;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrRangeMin = BusStart;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrRangeMax = 0;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrTranslationOffset = 0;
+ ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrLen =
+ BusEnd - BusStart + 1;
+
+ Temp = Temp + sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
+ ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Desc = 0x79;
+ ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Checksum = 0x0;
+
+ *Configuration = Buffer;
+ return EFI_SUCCESS;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+/**
+ Programs the PCI root bridge hardware so that it decodes the specified PCI
+ bus range.
+
+ This member function programs the specified PCI root bridge to decode the bus
+ range that is specified by the input parameter Configuration.
+ The bus range information is specified in terms of the ACPI 2.0 resource
+ descriptor format.
+
+ @param[in] This The
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance
+ @param[in] RootBridgeHandle The PCI Root Bridge whose bus range is to be
+ programmed
+ @param[in] Configuration The pointer to the PCI bus resource descriptor
+
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+ @retval EFI_INVALID_PARAMETER Configuration is NULL.
+ @retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI
+ 2.0 resource descriptor.
+ @retval EFI_INVALID_PARAMETER Configuration does not include a valid ACPI
+ 2.0 bus resource descriptor.
+ @retval EFI_INVALID_PARAMETER Configuration includes valid ACPI 2.0 resource
+ descriptors other than bus descriptors.
+ @retval EFI_INVALID_PARAMETER Configuration contains one or more invalid
+ ACPI resource descriptors.
+ @retval EFI_INVALID_PARAMETER "Address Range Minimum" is invalid for this
+ root bridge.
+ @retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this
+ root bridge.
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+ @retval EFI_SUCCESS The bus range for the PCI root bridge was
+ programmed.
+**/
+EFI_STATUS
+EFIAPI
+SetBusNumbers (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN VOID *Configuration
+ )
+{
+ LIST_ENTRY *List;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+ UINT8 *Ptr;
+ UINTN BusStart;
+ UINTN BusEnd;
+ UINTN BusLen;
+
+ if (Configuration == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Ptr = Configuration;
+
+ //
+ // Check the Configuration is valid
+ //
+ if (*Ptr != ACPI_ADDRESS_SPACE_DESCRIPTOR) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Ptr)->ResType != 2) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Ptr += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
+ if (*Ptr != ACPI_END_TAG_DESCRIPTOR) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ Ptr = Configuration;
+
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (RootBridgeHandle == RootBridgeInstance->Handle) {
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
+
+ Desc = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Ptr;
+ BusStart = (UINTN)Desc->AddrRangeMin;
+ BusLen = (UINTN)Desc->AddrLen;
+ BusEnd = BusStart + BusLen - 1;
+
+ if (BusStart > BusEnd) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((BusStart < RootBridgeInstance->BusBase) ||
+ (BusEnd > RootBridgeInstance->BusLimit))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Update the Bus Range
+ //
+ RootBridgeInstance->ResAllocNode[TypeBus].Base = BusStart;
+ RootBridgeInstance->ResAllocNode[TypeBus].Length = BusLen;
+ RootBridgeInstance->ResAllocNode[TypeBus].Status = ResAllocated;
+
+ //
+ // Program the Root Bridge Hardware
+ //
+
+ return EFI_SUCCESS;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+/**
+ Submits the I/O and memory resource requirements for the specified PCI root
+ bridge.
+
+ This function is used to submit all the I/O and memory resources that are
+ required by the specified PCI root bridge. The input parameter Configuration
+ is used to specify the following:
+ - The various types of resources that are required
+ - The associated lengths in terms of ACPI 2.0 resource descriptor format
+
+ @param[in] This Pointer to the
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param[in] RootBridgeHandle The PCI root bridge whose I/O and memory
+ resource requirements are being submitted.
+ @param[in] Configuration The pointer to the PCI I/O and PCI memory
+ resource descriptor.
+
+ @retval EFI_SUCCESS The I/O and memory resource requests for a PCI
+ root bridge were accepted.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+ @retval EFI_INVALID_PARAMETER Configuration is NULL.
+ @retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI
+ 2.0 resource descriptor.
+ @retval EFI_INVALID_PARAMETER Configuration includes requests for one or
+ more resource types that are not supported by
+ this PCI root bridge. This error will happen
+ if the caller did not combine resources
+ according to Attributes that were returned by
+ GetAllocAttributes().
+ @retval EFI_INVALID_PARAMETER Address Range Maximum" is invalid.
+ @retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER "Address Space Granularity" is invalid for
+ this PCI root bridge.
+**/
+EFI_STATUS
+EFIAPI
+SubmitResources (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN VOID *Configuration
+ )
+{
+ LIST_ENTRY *List;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+ UINT8 *Temp;
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;
+ UINT64 AddrLen;
+ UINT64 Alignment;
+
+ //
+ // Check the input parameter: Configuration
+ //
+ if (Configuration == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ Temp = (UINT8 *)Configuration;
+ while ( *Temp == 0x8A) {
+ Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
+ }
+
+ if (*Temp != 0x79) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Temp = (UINT8 *)Configuration;
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (RootBridgeHandle == RootBridgeInstance->Handle) {
+ while ( *Temp == 0x8A) {
+ Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp;
+
+ //
+ // Check Address Length
+ //
+ if (Ptr->AddrLen > 0xffffffff) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Check address range alignment
+ //
+ if ((Ptr->AddrRangeMax >= 0xffffffff) ||
+ (Ptr->AddrRangeMax != (GetPowerOfTwo64 (
+ Ptr->AddrRangeMax + 1
+ ) - 1)))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ switch (Ptr->ResType) {
+ case 0:
+
+ //
+ // Check invalid Address Sapce Granularity
+ //
+ if (Ptr->AddrSpaceGranularity != 32) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // check the memory resource request is supported by PCI root bridge
+ //
+ if ((RootBridgeInstance->RootBridgeAttrib ==
+ EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM) &&
+ (Ptr->SpecificFlag == 0x06))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ AddrLen = Ptr->AddrLen;
+ Alignment = Ptr->AddrRangeMax;
+ if (Ptr->AddrSpaceGranularity == 32) {
+ if (Ptr->SpecificFlag == 0x06) {
+ //
+ // Apply from GCD
+ //
+ RootBridgeInstance->ResAllocNode[TypePMem32].Status =
+ ResSubmitted;
+ } else {
+ RootBridgeInstance->ResAllocNode[TypeMem32].Length = AddrLen;
+ RootBridgeInstance->ResAllocNode[TypeMem32].Alignment =
+ Alignment;
+ RootBridgeInstance->ResAllocNode[TypeMem32].Status =
+ ResRequested;
+ HostBridgeInstance->ResourceSubmited = TRUE;
+ }
+ }
+
+ if (Ptr->AddrSpaceGranularity == 64) {
+ if (Ptr->SpecificFlag == 0x06) {
+ RootBridgeInstance->ResAllocNode[TypePMem64].Status =
+ ResSubmitted;
+ } else {
+ RootBridgeInstance->ResAllocNode[TypeMem64].Status =
+ ResSubmitted;
+ }
+ }
+
+ break;
+
+ case 1:
+ AddrLen = (UINTN)Ptr->AddrLen;
+ Alignment = (UINTN)Ptr->AddrRangeMax;
+ RootBridgeInstance->ResAllocNode[TypeIo].Length = AddrLen;
+ RootBridgeInstance->ResAllocNode[TypeIo].Alignment = Alignment;
+ RootBridgeInstance->ResAllocNode[TypeIo].Status = ResRequested;
+ HostBridgeInstance->ResourceSubmited = TRUE;
+ break;
+
+ default:
+ break;
+ }
+
+ Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
+ }
+
+ return EFI_SUCCESS;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+/**
+ Returns the proposed resource settings for the specified PCI root bridge.
+
+ This member function returns the proposed resource settings for the
+ specified PCI root bridge. The proposed resource settings are prepared when
+ NotifyPhase() is called with a Phase of EfiPciHostBridgeAllocateResources.
+ The output parameter Configuration specifies the following:
+ - The various types of resources, excluding bus resources, that are
+ allocated
+ - The associated lengths in terms of ACPI 2.0 resource descriptor format
+
+ @param[in] This Pointer to the
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param[in] RootBridgeHandle The PCI root bridge handle. Type EFI_HANDLE is
+ defined in InstallProtocolInterface() in the
+ UEFI 2.0 Specification.
+ @param[out] Configuration The pointer to the pointer to the PCI I/O and
+ memory resource descriptor.
+
+ @retval EFI_SUCCESS The requested parameters were returned.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+GetProposedResources (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT VOID **Configuration
+ )
+{
+ LIST_ENTRY *List;
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+ UINTN Index;
+ UINTN Number;
+ VOID *Buffer;
+ UINT8 *Temp;
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;
+ UINT64 ResStatus;
+
+ Buffer = NULL;
+ Number = 0;
+ //
+ // Get the Host Bridge Instance from the resource allocation protocol
+ //
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ //
+ // Enumerate the root bridges in this host bridge
+ //
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (RootBridgeHandle == RootBridgeInstance->Handle) {
+ for (Index = 0; Index < TypeBus; Index++) {
+ if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone) {
+ Number++;
+ }
+ }
+
+ if (Number == 0) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Buffer = AllocateZeroPool (
+ Number * sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
+ sizeof (EFI_ACPI_END_TAG_DESCRIPTOR)
+ );
+ if (Buffer == NULL) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+
+ Temp = Buffer;
+ for (Index = 0; Index < TypeBus; Index++) {
+ if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone) {
+ Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp;
+ ResStatus = RootBridgeInstance->ResAllocNode[Index].Status;
+
+ switch (Index) {
+ case TypeIo:
+ //
+ // Io
+ //
+ Ptr->Desc = 0x8A;
+ Ptr->Len = 0x2B;
+ Ptr->ResType = 1;
+ Ptr->GenFlag = 0;
+ Ptr->SpecificFlag = 0;
+ Ptr->AddrRangeMin = RootBridgeInstance->ResAllocNode[Index].Base;
+ Ptr->AddrRangeMax = 0;
+ Ptr->AddrTranslationOffset = (ResStatus == ResAllocated) ?
+ EFI_RESOURCE_SATISFIED :
+ EFI_RESOURCE_LESS;
+ Ptr->AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
+ break;
+
+ case TypeMem32:
+ //
+ // Memory 32
+ //
+ Ptr->Desc = 0x8A;
+ Ptr->Len = 0x2B;
+ Ptr->ResType = 0;
+ Ptr->GenFlag = 0;
+ Ptr->SpecificFlag = 0;
+ Ptr->AddrSpaceGranularity = 32;
+ Ptr->AddrRangeMin = RootBridgeInstance->ResAllocNode[Index].Base;
+ Ptr->AddrRangeMax = 0;
+ Ptr->AddrTranslationOffset = (ResStatus == ResAllocated) ?
+ EFI_RESOURCE_SATISFIED :
+ EFI_RESOURCE_LESS;
+ Ptr->AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
+ break;
+
+ case TypePMem32:
+ //
+ // Prefetch memory 32
+ //
+ Ptr->Desc = 0x8A;
+ Ptr->Len = 0x2B;
+ Ptr->ResType = 0;
+ Ptr->GenFlag = 0;
+ Ptr->SpecificFlag = 6;
+ Ptr->AddrSpaceGranularity = 32;
+ Ptr->AddrRangeMin = 0;
+ Ptr->AddrRangeMax = 0;
+ Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;
+ Ptr->AddrLen = 0;
+ break;
+
+ case TypeMem64:
+ //
+ // Memory 64
+ //
+ Ptr->Desc = 0x8A;
+ Ptr->Len = 0x2B;
+ Ptr->ResType = 0;
+ Ptr->GenFlag = 0;
+ Ptr->SpecificFlag = 0;
+ Ptr->AddrSpaceGranularity = 64;
+ Ptr->AddrRangeMin = 0;
+ Ptr->AddrRangeMax = 0;
+ Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;
+ Ptr->AddrLen = 0;
+ break;
+
+ case TypePMem64:
+ //
+ // Prefetch memory 64
+ //
+ Ptr->Desc = 0x8A;
+ Ptr->Len = 0x2B;
+ Ptr->ResType = 0;
+ Ptr->GenFlag = 0;
+ Ptr->SpecificFlag = 6;
+ Ptr->AddrSpaceGranularity = 64;
+ Ptr->AddrRangeMin = 0;
+ Ptr->AddrRangeMax = 0;
+ Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;
+ Ptr->AddrLen = 0;
+ break;
+ }
+
+ Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
+ }
+ }
+
+ ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Desc = 0x79;
+ ((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Checksum = 0x0;
+
+ *Configuration = Buffer;
+
+ return EFI_SUCCESS;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+/**
+ Provides the hooks from the PCI bus driver to every PCI controller
+ (device/function) at various stages of the PCI enumeration process that allow
+ the host bridge driver to preinitialize individual PCI controllers before
+ enumeration.
+
+ This function is called during the PCI enumeration process. No specific
+ action is expected from this member function. It allows the host bridge
+ driver to preinitialize individual PCI controllers before enumeration.
+
+ @param This Pointer to the
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param RootBridgeHandle The associated PCI root bridge handle. Type
+ EFI_HANDLE is defined in InstallProtocolInterface()
+ in the UEFI 2.0 Specification.
+ @param PciAddress The address of the PCI device on the PCI bus. This
+ address can be passed to the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL member functions to
+ access the PCI configuration space of the device.
+ See Table 12-1 in the UEFI 2.0 Specification for the
+ definition of
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS.
+ @param Phase The phase of the PCI device enumeration.
+
+ @retval EFI_SUCCESS The requested parameters were returned.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+ @retval EFI_INVALID_PARAMETER Phase is not a valid phase that is defined
+ in
+ EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+ The PCI enumerator should not enumerate this
+ device, including its child devices if it is
+ a PCI-to-PCI bridge.
+**/
+EFI_STATUS
+EFIAPI
+PreprocessController (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS PciAddress,
+ IN EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE Phase
+ )
+{
+ PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
+ PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
+ LIST_ENTRY *List;
+
+ HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
+ List = HostBridgeInstance->Head.ForwardLink;
+
+ //
+ // Enumerate the root bridges in this host bridge
+ //
+ while (List != &HostBridgeInstance->Head) {
+ RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
+ if (RootBridgeHandle == RootBridgeInstance->Handle) {
+ break;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ if (List == &HostBridgeInstance->Head) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((UINT32)Phase > EfiPciBeforeResourceCollection) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.h b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.h
new file mode 100644
index 0000000000..8182697994
--- /dev/null
+++ b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.h
@@ -0,0 +1,624 @@
+/** @file
+ Implementation of PciHostBridge.h
+ The Header file of the Pci Host Bridge Driver
+
+ Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
+ Copyright (c) 2008 - 2010, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#ifndef PCI_HOST_BRIDGE_H_
+#define PCI_HOST_BRIDGE_H_
+
+#include <PiDxe.h>
+
+#include <IndustryStandard/Pci.h>
+#include <IndustryStandard/Acpi.h>
+
+#include <Protocol/PciHostBridgeResourceAllocation.h>
+#include <Protocol/PciRootBridgeIo.h>
+#include <Protocol/Metronome.h>
+#include <Protocol/DevicePath.h>
+
+#include <Library/BaseLib.h>
+#include <Library/DebugLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DxeServicesTableLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/IoLib.h>
+#include <Library/PciLib.h>
+
+//
+// Hard code the host bridge number in the platform.
+// In this chipset, there is only one host bridge.
+//
+#define HOST_BRIDGE_NUMBER 1
+
+#define MAX_PCI_DEVICE_NUMBER 31
+#define MAX_PCI_FUNCTION_NUMBER 7
+#define MAX_PCI_REG_ADDRESS 0xFF
+
+typedef enum {
+ IoOperation,
+ MemOperation,
+ PciOperation
+} OPERATION_TYPE;
+
+#define PCI_HOST_BRIDGE_SIGNATURE SIGNATURE_32('e', 'h', 's', 't')
+typedef struct {
+ UINTN Signature;
+ EFI_HANDLE HostBridgeHandle;
+ UINTN RootBridgeNumber;
+ LIST_ENTRY Head;
+ BOOLEAN ResourceSubmited;
+ BOOLEAN CanRestarted;
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL ResAlloc;
+} PCI_HOST_BRIDGE_INSTANCE;
+
+#define INSTANCE_FROM_RESOURCE_ALLOCATION_THIS(a) \
+ CR(a, PCI_HOST_BRIDGE_INSTANCE, ResAlloc, PCI_HOST_BRIDGE_SIGNATURE)
+
+//
+// HostBridge Resource Allocation interface
+//
+
+/**
+ These are the notifications from the PCI bus driver that it is about to enter
+ a certain phase of the PCI enumeration process.
+
+ This member function can be used to notify the host bridge driver to perform
+ specific actions, including any chipset-specific initialization, so that the
+ chipset is ready to enter the next phase. Eight notification points are
+ defined at this time. See belows:
+
+ EfiPciHostBridgeBeginEnumeration Resets the host bridge PCI apertures
+ and internal data structures. The PCI
+ enumerator should issue this
+ notification before starting a fresh
+ enumeration process. Enumeration
+ cannot be restarted after sending any
+ other notification such as
+ EfiPciHostBridgeBeginBusAllocation.
+
+ EfiPciHostBridgeBeginBusAllocation The bus allocation phase is about to
+ begin. No specific action is required
+ here. This notification can be used to
+ perform any chipset-specific
+ programming.
+
+ EfiPciHostBridgeEndBusAllocation The bus allocation and bus programming
+ phase is complete. No specific action
+ is required here. This notification
+ can be used to perform any
+ chipset-specific programming.
+
+ EfiPciHostBridgeBeginResourceAllocation
+ The resource allocation phase is about
+ to begin. No specific action is
+ required here. This notification can
+ be used to perform any
+ chipset-specific programming.
+
+ EfiPciHostBridgeAllocateResources Allocates resources per previously
+ submitted requests for all the PCI
+ root bridges. These resource settings
+ are returned on the next call to
+ GetProposedResources(). Before calling
+ NotifyPhase() with a Phase of
+ EfiPciHostBridgeAllocateResource, the
+ PCI bus enumerator is responsible for
+ gathering I/O and memory requests for
+ all the PCI root bridges and
+ submitting these requests using
+ SubmitResources(). This function pads
+ the resource amount to suit the root
+ bridge hardware, takes care of
+ dependencies between the PCI root
+ bridges, and calls the Global
+ Coherency Domain (GCD) with the
+ allocation request. In the case of
+ padding, the allocated range could be
+ bigger than what was requested.
+
+ EfiPciHostBridgeSetResources Programs the host bridge hardware to
+ decode previously allocated resources
+ (proposed resources) for all the PCI
+ root bridges. After the hardware is
+ programmed, reassigning resources will
+ not be supported. The bus settings are
+ not affected.
+
+ EfiPciHostBridgeFreeResources Deallocates resources that were
+ previously allocated for all the PCI
+ root bridges and resets the I/O and
+ memory apertures to their initial
+ state. The bus settings are not
+ affected. If the request to allocate
+ resources fails, the PCI enumerator
+ can use this notification to
+ deallocate previous resources, adjust
+ the requests, and retry allocation.
+
+ EfiPciHostBridgeEndResourceAllocation The resource allocation phase is
+ completed. No specific action is
+ required here. This notification can
+ be used to perform any chipsetspecific
+ programming.
+
+ @param[in] This The instance pointer of
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ @param[in] Phase The phase during enumeration
+
+ @retval EFI_NOT_READY This phase cannot be entered at this time. For
+ example, this error is valid for a Phase of
+ EfiPciHostBridgeAllocateResources if
+ SubmitResources() has not been called for one
+ or more PCI root bridges before this call
+
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+ This error is valid for a Phase of
+ EfiPciHostBridgeSetResources.
+
+ @retval EFI_INVALID_PARAMETER Invalid phase parameter
+
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources. This error is valid for a
+ Phase of EfiPciHostBridgeAllocateResources if
+ the previously submitted resource requests
+ cannot be fulfilled or were only partially
+ fulfilled.
+
+ @retval EFI_SUCCESS The notification was accepted without any
+ errors.
+**/
+EFI_STATUS
+EFIAPI
+NotifyPhase (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase
+ );
+
+/**
+ Return the device handle of the next PCI root bridge that is associated with
+ this Host Bridge.
+
+ This function is called multiple times to retrieve the device handles of all
+ the PCI root bridges that are associated with this PCI host bridge. Each PCI
+ host bridge is associated with one or more PCI root bridges. On each call,
+ the handle that was returned by the previous call is passed into the
+ interface, and on output the interface returns the device handle of the next
+ PCI root bridge. The caller can use the handle to obtain the instance of the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL for that root bridge. When there are no more
+ PCI root bridges to report, the interface returns EFI_NOT_FOUND. A PCI
+ enumerator must enumerate the PCI root bridges in the order that they are
+ returned by this function.
+
+ For D945 implementation, there is only one root bridge in PCI host bridge.
+
+ @param[in] This The instance pointer of
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ @param[in, out] RootBridgeHandle Returns the device handle of the next PCI
+ root bridge.
+
+ @retval EFI_SUCCESS If parameter RootBridgeHandle = NULL, then
+ return the first Rootbridge handle of the
+ specific Host bridge and return EFI_SUCCESS.
+
+ @retval EFI_NOT_FOUND Can not find the any more root bridge in
+ specific host bridge.
+
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not an EFI_HANDLE that was
+ returned on a previous call to
+ GetNextRootBridge().
+**/
+EFI_STATUS
+EFIAPI
+GetNextRootBridge (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN OUT EFI_HANDLE *RootBridgeHandle
+ );
+
+/**
+ Returns the allocation attributes of a PCI root bridge.
+
+ The function returns the allocation attributes of a specific PCI root bridge.
+ The attributes can vary from one PCI root bridge to another. These attributes
+ are different from the decode-related attributes that are returned by the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member function. The
+ RootBridgeHandle parameter is used to specify the instance of the PCI root
+ bridge. The device handles of all the root bridges that are associated with
+ this host bridge must be obtained by calling GetNextRootBridge(). The
+ attributes are static in the sense that they do not change during or after
+ the enumeration process. The hardware may provide mechanisms to change the
+ attributes on the fly, but such changes must be completed before
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is installed. The permitted
+ values of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are defined in
+ "Related Definitions" below. The caller uses these attributes to combine
+ multiple resource requests.
+
+ For example, if the flag EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is set, the PCI
+ bus enumerator needs to include requests for the prefetchable memory in the
+ nonprefetchable memory pool and not request any prefetchable memory.
+
+ Attribute Description
+ ------------------------------------ ---------------------------------------
+ EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM If this bit is set, then the PCI root
+ bridge does not support separate
+ windows for nonprefetchable and
+ prefetchable memory. A PCI bus driver
+ needs to include requests for
+ prefetchable memory in the
+ nonprefetchable memory pool.
+
+ EFI_PCI_HOST_BRIDGE_MEM64_DECODE If this bit is set, then the PCI root
+ bridge supports 64-bit memory windows.
+ If this bit is not set, the PCI bus
+ driver needs to include requests for a
+ 64-bit memory address in the
+ corresponding 32-bit memory pool.
+
+ @param[in] This The instance pointer of
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ @param[in] RootBridgeHandle The device handle of the PCI root bridge in
+ which the caller is interested. Type
+ EFI_HANDLE is defined in
+ InstallProtocolInterface() in the UEFI 2.0
+ Specification.
+ @param[out] Attributes The pointer to attribte of root bridge, it is
+ output parameter
+
+ @retval EFI_INVALID_PARAMETER Attribute pointer is NULL
+
+ @retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
+
+ @retval EFI_SUCCESS Success to get attribute of interested root
+ bridge.
+**/
+EFI_STATUS
+EFIAPI
+GetAttributes (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT UINT64 *Attributes
+ );
+
+/**
+ Sets up the specified PCI root bridge for the bus enumeration process.
+
+ This member function sets up the root bridge for bus enumeration and returns
+ the PCI bus range over which the search should be performed in ACPI 2.0
+ resource descriptor format.
+
+ @param[in] This The
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param[in] RootBridgeHandle The PCI Root Bridge to be set up.
+ @param[out] Configuration Pointer to the pointer to the PCI bus resource
+ descriptor.
+
+ @retval EFI_INVALID_PARAMETER Invalid Root bridge's handle
+
+ @retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource descriptor tag.
+
+ @retval EFI_SUCCESS Sucess to allocate ACPI resource descriptor.
+**/
+EFI_STATUS
+EFIAPI
+StartBusEnumeration (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT VOID **Configuration
+ );
+
+/**
+ Programs the PCI root bridge hardware so that it decodes the specified PCI
+ bus range.
+
+ This member function programs the specified PCI root bridge to decode the bus
+ range that is specified by the input parameter Configuration.
+ The bus range information is specified in terms of the ACPI 2.0 resource
+ descriptor format.
+
+ @param[in] This The
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance
+ @param[in] RootBridgeHandle The PCI Root Bridge whose bus range is to be
+ programmed
+ @param[in] Configuration The pointer to the PCI bus resource descriptor
+
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+
+ @retval EFI_INVALID_PARAMETER Configuration is NULL.
+
+ @retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI
+ 2.0 resource descriptor.
+
+ @retval EFI_INVALID_PARAMETER Configuration does not include a valid ACPI
+ 2.0 bus resource descriptor.
+
+ @retval EFI_INVALID_PARAMETER Configuration includes valid ACPI 2.0 resource
+ descriptors other than bus descriptors.
+
+ @retval EFI_INVALID_PARAMETER Configuration contains one or more invalid
+ ACPI resource descriptors.
+
+ @retval EFI_INVALID_PARAMETER "Address Range Minimum" is invalid for this
+ root bridge.
+
+ @retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this
+ root bridge.
+
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+
+ @retval EFI_SUCCESS The bus range for the PCI root bridge was
+ programmed.
+**/
+EFI_STATUS
+EFIAPI
+SetBusNumbers (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN VOID *Configuration
+ );
+
+/**
+ Submits the I/O and memory resource requirements for the specified PCI root
+ bridge.
+
+ This function is used to submit all the I/O and memory resources that are
+ required by the specified PCI root bridge. The input parameter Configuration
+ is used to specify the following:
+ - The various types of resources that are required
+ - The associated lengths in terms of ACPI 2.0 resource descriptor format
+
+ @param[in] This Pointer to the
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param[in] RootBridgeHandle The PCI root bridge whose I/O and memory
+ resource requirements are being submitted.
+ @param[in] Configuration The pointer to the PCI I/O and PCI memory
+ resource descriptor.
+
+ @retval EFI_SUCCESS The I/O and memory resource requests for a PCI
+ root bridge were accepted.
+
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+
+ @retval EFI_INVALID_PARAMETER Configuration is NULL.
+
+ @retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI
+ 2.0 resource descriptor.
+
+ @retval EFI_INVALID_PARAMETER Configuration includes requests for one or
+ more resource types that are not supported by
+ this PCI root bridge. This error will happen
+ if the caller did not combine resources
+ according to Attributes that were returned by
+ GetAllocAttributes().
+
+ @retval EFI_INVALID_PARAMETER Address Range Maximum" is invalid.
+
+ @retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this PCI
+ root bridge.
+
+ @retval EFI_INVALID_PARAMETER "Address Space Granularity" is invalid for
+ this PCI root bridge.
+**/
+EFI_STATUS
+EFIAPI
+SubmitResources (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN VOID *Configuration
+ );
+
+/**
+ Returns the proposed resource settings for the specified PCI root bridge.
+
+ This member function returns the proposed resource settings for the
+ specified PCI root bridge. The proposed resource settings are prepared when
+ NotifyPhase() is called with a Phase of EfiPciHostBridgeAllocateResources.
+ The output parameter Configuration specifies the following:
+ - The various types of resources, excluding bus resources, that are
+ allocated
+ - The associated lengths in terms of ACPI 2.0 resource descriptor format
+
+ @param[in] This Pointer to the
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param[in] RootBridgeHandle The PCI root bridge handle. Type EFI_HANDLE is
+ defined in InstallProtocolInterface() in the
+ UEFI 2.0 Specification.
+ @param[out] Configuration The pointer to the pointer to the PCI I/O and
+ memory resource descriptor.
+
+ @retval EFI_SUCCESS The requested parameters were returned.
+
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+GetProposedResources (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT VOID **Configuration
+ );
+
+/**
+ Provides the hooks from the PCI bus driver to every PCI controller
+ (device/function) at various stages of the PCI enumeration process that allow
+ the host bridge driver to preinitialize individual PCI controllers before
+ enumeration.
+
+ This function is called during the PCI enumeration process. No specific
+ action is expected from this member function. It allows the host bridge
+ driver to preinitialize individual PCI controllers before enumeration.
+
+ @param This Pointer to the
+ EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+ instance.
+ @param RootBridgeHandle The associated PCI root bridge handle. Type
+ EFI_HANDLE is defined in InstallProtocolInterface()
+ in the UEFI 2.0 Specification.
+ @param PciAddress The address of the PCI device on the PCI bus. This
+ address can be passed to the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL member functions to
+ access the PCI configuration space of the device.
+ See Table 12-1 in the UEFI 2.0 Specification for the
+ definition of
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS.
+ @param Phase The phase of the PCI device enumeration.
+
+ @retval EFI_SUCCESS The requested parameters were returned.
+
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
+ handle.
+
+ @retval EFI_INVALID_PARAMETER Phase is not a valid phase that is defined
+ in
+ EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.
+
+ @retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
+ The PCI enumerator should not enumerate this
+ device, including its child devices if it is
+ a PCI-to-PCI bridge.
+**/
+EFI_STATUS
+EFIAPI
+PreprocessController (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS PciAddress,
+ IN EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE Phase
+ );
+
+//
+// Define resource status constant
+//
+#define EFI_RESOURCE_NONEXISTENT 0xFFFFFFFFFFFFFFFFULL
+#define EFI_RESOURCE_LESS 0xFFFFFFFFFFFFFFFEULL
+
+//
+// Driver Instance Data Prototypes
+//
+
+typedef struct {
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation;
+ UINTN NumberOfBytes;
+ UINTN NumberOfPages;
+ EFI_PHYSICAL_ADDRESS HostAddress;
+ EFI_PHYSICAL_ADDRESS MappedHostAddress;
+} MAP_INFO;
+
+typedef struct {
+ ACPI_HID_DEVICE_PATH AcpiDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
+} EFI_PCI_ROOT_BRIDGE_DEVICE_PATH;
+
+typedef struct {
+ UINT64 BusBase;
+ UINT64 BusLimit;
+
+ UINT64 MemBase;
+ UINT64 MemLimit;
+
+ UINT64 IoBase;
+ UINT64 IoLimit;
+} PCI_ROOT_BRIDGE_RESOURCE_APERTURE;
+
+typedef enum {
+ TypeIo = 0,
+ TypeMem32,
+ TypePMem32,
+ TypeMem64,
+ TypePMem64,
+ TypeBus,
+ TypeMax
+} PCI_RESOURCE_TYPE;
+
+typedef enum {
+ ResNone = 0,
+ ResSubmitted,
+ ResRequested,
+ ResAllocated,
+ ResStatusMax
+} RES_STATUS;
+
+typedef struct {
+ PCI_RESOURCE_TYPE Type;
+ UINT64 Base;
+ UINT64 Length;
+ UINT64 Alignment;
+ RES_STATUS Status;
+} PCI_RES_NODE;
+
+#define PCI_ROOT_BRIDGE_SIGNATURE SIGNATURE_32('e', '2', 'p', 'b')
+
+typedef struct {
+ UINT32 Signature;
+ LIST_ENTRY Link;
+ EFI_HANDLE Handle;
+ UINT64 RootBridgeAttrib;
+ UINT64 Attributes;
+ UINT64 Supports;
+
+ //
+ // Specific for this memory controller: Bus, I/O, Mem
+ //
+ PCI_RES_NODE ResAllocNode[6];
+
+ //
+ // Addressing for Memory and I/O and Bus arrange
+ //
+ UINT64 BusBase;
+ UINT64 MemBase;
+ UINT64 IoBase;
+ UINT64 BusLimit;
+ UINT64 MemLimit;
+ UINT64 IoLimit;
+
+ EFI_DEVICE_PATH_PROTOCOL *DevicePath;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL Io;
+} PCI_ROOT_BRIDGE_INSTANCE;
+
+//
+// Driver Instance Data Macros
+//
+#define DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(a) \
+ CR(a, PCI_ROOT_BRIDGE_INSTANCE, Io, PCI_ROOT_BRIDGE_SIGNATURE)
+
+#define DRIVER_INSTANCE_FROM_LIST_ENTRY(a) \
+ CR(a, PCI_ROOT_BRIDGE_INSTANCE, Link, PCI_ROOT_BRIDGE_SIGNATURE)
+
+/**
+
+ Construct the Pci Root Bridge Io protocol
+
+ @param Protocol Point to protocol instance
+ @param HostBridgeHandle Handle of host bridge
+ @param Attri Attribute of host bridge
+ @param ResAperture ResourceAperture for host bridge
+
+ @retval EFI_SUCCESS Success to initialize the Pci Root Bridge.
+**/
+EFI_STATUS
+RootBridgeConstructor (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *Protocol,
+ IN EFI_HANDLE HostBridgeHandle,
+ IN UINT64 Attri,
+ IN PCI_ROOT_BRIDGE_RESOURCE_APERTURE *ResAperture
+ );
+
+#endif
diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.uni b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridge.uni
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diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
new file mode 100644
index 0000000000..05eec84d7e
--- /dev/null
+++ b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
@@ -0,0 +1,54 @@
+## @file
+# Platform Boot Manager Lib Module
+# The basic interfaces implementation to a single segment PCI Host Bridge
+# driver.
+#
+# Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
+# Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = PciHostBridge
+ MODULE_UNI_FILE = PciHostBridge.uni
+ FILE_GUID = ACAB2797-6602-4B27-925F-B43483C630CE
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = InitializePciHostBridge
+
+[Packages]
+ MdePkg/MdePkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ UefiBootServicesTableLib
+ DxeServicesTableLib
+ UefiLib
+ MemoryAllocationLib
+ BaseMemoryLib
+ BaseLib
+ DebugLib
+ DevicePathLib
+ IoLib
+ PciLib
+
+[Sources]
+ PciHostBridge.c
+ PciRootBridgeIo.c
+ PciHostBridge.h
+ IoFifo.h
+
+[Protocols]
+ gEfiPciHostBridgeResourceAllocationProtocolGuid ## PRODUCES
+ gEfiPciRootBridgeIoProtocolGuid ## PRODUCES
+ gEfiMetronomeArchProtocolGuid ## CONSUMES
+ gEfiDevicePathProtocolGuid ## PRODUCES
+
+[depex]
+ gEfiMetronomeArchProtocolGuid
+
+[UserExtensions.TianoCore."ExtraFiles"]
+ PciHostBridgeExtra.uni
diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeExtra.uni b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeExtra.uni
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diff --git a/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c
new file mode 100644
index 0000000000..b70e4745cc
--- /dev/null
+++ b/Platform/AMD/VanGoghBoard/Override/edk2/MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciRootBridgeIo.c
@@ -0,0 +1,2421 @@
+/** @file
+ Implementation of PciRootBridgeIo.c
+ PCI Root Bridge Io Protocol implementation
+
+ Copyright (C) 2024 Advanced Micro Devices, Inc. All rights reserved.<BR>
+ Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include "PciHostBridge.h"
+#include "IoFifo.h"
+
+typedef struct {
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR SpaceDesp[TypeMax];
+ EFI_ACPI_END_TAG_DESCRIPTOR EndDesp;
+} RESOURCE_CONFIGURATION;
+
+RESOURCE_CONFIGURATION Configuration = {
+ {
+ { 0x8A, 0x2B, 1, 0, 0, 0, 0, 0, 0, 0 },
+ { 0x8A, 0x2B, 0, 0, 0, 32, 0, 0, 0, 0 },
+ { 0x8A, 0x2B, 0, 0, 6, 32, 0, 0, 0, 0 },
+ { 0x8A, 0x2B, 0, 0, 0, 64, 0, 0, 0, 0 },
+ { 0x8A, 0x2B, 0, 0, 6, 64, 0, 0, 0, 0 },
+ { 0x8A, 0x2B, 2, 0, 0, 0, 0, 0, 0, 0 }
+ },
+ { 0x79, 0 }
+};
+
+//
+// Protocol Member Function Prototypes
+//
+
+/**
+ Polls an address in memory mapped I/O space until an exit condition is met,
+ or a timeout occurs.
+
+ This function provides a standard way to poll a PCI memory location. A PCI
+ memory read operation is performed at the PCI memory address specified by
+ Address for the width specified by Width. The result of this PCI memory read
+ operation is stored in Result. This PCI memory read operation is repeated
+ until either a timeout of Delay 100 ns units has expired, or (Result & Mask)
+ is equal to Value.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The base address of the memory operations. The caller
+ is responsible for aligning Address if required.
+ @param[in] Mask Mask used for the polling criteria. Bytes above Width
+ in Mask are ignored. The bits in the bytes below Width
+ which are zero in Mask are ignored when polling the
+ memory address.
+ @param[in] Value The comparison value used for the polling exit
+ criteria.
+ @param[in] Delay The number of 100 ns units to poll. Note that timer
+ available may be of poorer granularity.
+ @param[out] Result Pointer to the last value read from the memory
+ location.
+
+ @retval EFI_SUCCESS The last data returned from the access matched
+ the poll exit criteria.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_INVALID_PARAMETER Result is NULL.
+ @retval EFI_TIMEOUT Delay expired before a match occurred.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPollMem (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINT64 Mask,
+ IN UINT64 Value,
+ IN UINT64 Delay,
+ OUT UINT64 *Result
+ );
+
+/**
+ Reads from the I/O space of a PCI Root Bridge. Returns when either the
+ polling exit criteria is satisfied or after a defined duration.
+
+ This function provides a standard way to poll a PCI I/O location. A PCI I/O
+ read operation is performed at the PCI I/O address specified by Address for
+ the width specified by Width. The result of this PCI I/O read operation is
+ stored in Result. This PCI I/O read operation is repeated until either a
+ timeout of Delay 100 ns units has expired, or (Result & Mask) is equal to
+ Value.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the I/O operations.
+ @param[in] Address The base address of the I/O operations. The caller is
+ responsible for aligning Address if required.
+ @param[in] Mask Mask used for the polling criteria. Bytes above Width in
+ Mask are ignored. The bits in the bytes below Width
+ which are zero in Mask are ignored when polling the I/O
+ address.
+ @param[in] Value The comparison value used for the polling exit criteria.
+ @param[in] Delay The number of 100 ns units to poll. Note that timer
+ available may be of poorer granularity.
+ @param[out] Result Pointer to the last value read from the memory location.
+
+ @retval EFI_SUCCESS The last data returned from the access matched
+ the poll exit criteria.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_INVALID_PARAMETER Result is NULL.
+ @retval EFI_TIMEOUT Delay expired before a match occurred.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPollIo (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINT64 Mask,
+ IN UINT64 Value,
+ IN UINT64 Delay,
+ OUT UINT64 *Result
+ );
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge memory space.
+
+ The Mem.Read(), and Mem.Write() functions enable a driver to access PCI
+ controller registers in the PCI root bridge memory space.
+ The memory operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and memory width restrictions that a
+ PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operation.
+ @param[in] Address The base address of the memory operation. The caller
+ is responsible for aligning the Address if required.
+ @param[in] Count The number of memory operations to perform. Bytes
+ moved is Width size * Count, starting at Address.
+ @param[out] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoMemRead (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge memory space.
+
+ The Mem.Read(), and Mem.Write() functions enable a driver to access PCI
+ controller registers in the PCI root bridge memory space.
+ The memory operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and memory width restrictions that a
+ PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operation.
+ @param[in] Address The base address of the memory operation. The caller
+ is responsible for aligning the Address if required.
+ @param[in] Count The number of memory operations to perform. Bytes
+ moved is Width size * Count, starting at Address.
+ @param[in] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoMemWrite (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ );
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge I/O space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] UserAddress The base address of the I/O operation. The caller is
+ responsible for aligning the Address if required.
+ @param[in] Count The number of I/O operations to perform. Bytes moved
+ is Width size * Count, starting at Address.
+ @param[out] UserBuffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoIoRead (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 UserAddress,
+ IN UINTN Count,
+ OUT VOID *UserBuffer
+ );
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge I/O space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] UserAddress The base address of the I/O operation. The caller is
+ responsible for aligning the Address if required.
+ @param[in] Count The number of I/O operations to perform. Bytes moved
+ is Width size * Count, starting at Address.
+ @param[in] UserBuffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoIoWrite (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 UserAddress,
+ IN UINTN Count,
+ IN VOID *UserBuffer
+ );
+
+/**
+ Enables a PCI driver to copy one region of PCI root bridge memory space to
+ another region of PCI root bridge memory space.
+
+ The CopyMem() function enables a PCI driver to copy one region of PCI root
+ bridge memory space to another region of PCI root bridge memory space. This
+ is especially useful for video scroll operation on a memory mapped video
+ buffer.
+ The memory operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and memory width restrictions that a
+ PCI root bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
+ instance.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] DestAddress The destination address of the memory operation. The
+ caller is responsible for aligning the DestAddress if
+ required.
+ @param[in] SrcAddress The source address of the memory operation. The caller
+ is responsible for aligning the SrcAddress if
+ required.
+ @param[in] Count The number of memory operations to perform. Bytes
+ moved is Width size * Count, starting at DestAddress
+ and SrcAddress.
+
+
+ @retval EFI_SUCCESS The data was copied from one memory region
+ to another memory region.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoCopyMem (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 DestAddress,
+ IN UINT64 SrcAddress,
+ IN UINTN Count
+ );
+
+/**
+ Enables a PCI driver to access PCI controller registers in a PCI root
+ bridge's configuration space.
+
+ The Pci.Read() and Pci.Write() functions enable a driver to access PCI
+ configuration registers for a PCI controller.
+ The PCI Configuration operations are carried out exactly as requested. The
+ caller is responsible for any alignment and PCI configuration width issues
+ that a PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The address within the PCI configuration space for the
+ PCI controller.
+ @param[in] Count The number of PCI configuration operations to perform.
+ Bytes moved is Width size * Count, starting at
+ Address.
+ @param[out] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPciRead (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ );
+
+/**
+ Enables a PCI driver to access PCI controller registers in a PCI root
+ bridge's configuration space.
+
+ The Pci.Read() and Pci.Write() functions enable a driver to access PCI
+ configuration registers for a PCI controller.
+ The PCI Configuration operations are carried out exactly as requested. The
+ caller is responsible for any alignment and PCI configuration width issues
+ that a PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The address within the PCI configuration space for the
+ PCI controller.
+ @param[in] Count The number of PCI configuration operations to perform.
+ Bytes moved is Width size * Count, starting at
+ Address.
+ @param[in] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPciWrite (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ );
+
+/**
+ Provides the PCI controller-specific addresses required to access system
+ memory from a DMA bus master.
+
+ The Map() function provides the PCI controller specific addresses needed to
+ access system memory. This function is used to map system memory for PCI bus
+ master DMA accesses.
+
+ @param[in] This A pointer to the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Operation Indicates if the bus master is going to read
+ or write to system memory.
+ @param[in] HostAddress The system memory address to map to the PCI
+ controller.
+ @param[in, out] NumberOfBytes On input the number of bytes to map. On
+ output the number of bytes that were mapped.
+ @param[out] DeviceAddress The resulting map address for the bus master
+ PCI controller to use to access the system
+ memory's HostAddress.
+ @param[out] Mapping The value to pass to Unmap() when the bus
+ master DMA operation is complete.
+
+ @retval EFI_SUCCESS The range was mapped for the returned
+ NumberOfBytes.
+ @retval EFI_INVALID_PARAMETER Operation is invalid.
+ @retval EFI_INVALID_PARAMETER HostAddress is NULL.
+ @retval EFI_INVALID_PARAMETER NumberOfBytes is NULL.
+ @retval EFI_INVALID_PARAMETER DeviceAddress is NULL.
+ @retval EFI_INVALID_PARAMETER Mapping is NULL.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common
+ buffer.
+ @retval EFI_DEVICE_ERROR The system hardware could not map the
+ requested address.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoMap (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation,
+ IN VOID *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ );
+
+/**
+ Completes the Map() operation and releases any corresponding resources.
+
+ The Unmap() function completes the Map() operation and releases any
+ corresponding resources.
+ If the operation was an EfiPciOperationBusMasterWrite or
+ EfiPciOperationBusMasterWrite64, the data is committed to the target system
+ memory.
+ Any resources used for the mapping are freed.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Mapping The mapping value returned from Map().
+
+ @retval EFI_SUCCESS The range was unmapped.
+ @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by
+ Map().
+ @retval EFI_DEVICE_ERROR The data was not committed to the target
+ system memory.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoUnmap (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ );
+
+/**
+ Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer
+ or EfiPciOperationBusMasterCommonBuffer64 mapping.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Type This parameter is not used and must be ignored.
+ @param MemoryType The type of memory to allocate, EfiBootServicesData or
+ EfiRuntimeServicesData.
+ @param Pages The number of pages to allocate.
+ @param HostAddress A pointer to store the base system memory address of the
+ allocated range.
+ @param Attributes The requested bit mask of attributes for the allocated
+ range. Only the attributes
+ EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE,
+ EFI_PCI_ATTRIBUTE_MEMORY_CACHED, and
+ EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE may be used with this
+ function.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_INVALID_PARAMETER MemoryType is invalid.
+ @retval EFI_INVALID_PARAMETER HostAddress is NULL.
+ @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal
+ attribute bits are MEMORY_WRITE_COMBINE,
+ MEMORY_CACHED, and DUAL_ADDRESS_CYCLE.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoAllocateBuffer (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN Pages,
+ OUT VOID **HostAddress,
+ IN UINT64 Attributes
+ );
+
+/**
+ Frees memory that was allocated with AllocateBuffer().
+
+ The FreeBuffer() function frees memory that was allocated with
+ AllocateBuffer().
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Pages The number of pages to free.
+ @param HostAddress The base system memory address of the allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were freed.
+ @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and
+ Pages was not allocated with AllocateBuffer().
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoFreeBuffer (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ OUT VOID *HostAddress
+ );
+
+/**
+ Flushes all PCI posted write transactions from a PCI host bridge to system
+ memory.
+
+ The Flush() function flushes any PCI posted write transactions from a PCI
+ host bridge to system memory. Posted write transactions are generated by PCI
+ bus masters when they perform write transactions to target addresses in
+ system memory.
+ This function does not flush posted write transactions from any PCI bridges.
+ A PCI controller specific action must be taken to guarantee that the posted
+ write transactions have been flushed from the PCI controller and from all the
+ PCI bridges into the PCI host bridge. This is typically done with a PCI read
+ transaction from the PCI controller prior to calling Flush().
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+
+ @retval EFI_SUCCESS The PCI posted write transactions were flushed
+ from the PCI host bridge to system memory.
+ @retval EFI_DEVICE_ERROR The PCI posted write transactions were not flushed
+ from the PCI host bridge due to a hardware error.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoFlush (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This
+ );
+
+/**
+ Gets the attributes that a PCI root bridge supports setting with
+ SetAttributes(), and the attributes that a PCI root bridge is currently
+ using.
+
+ The GetAttributes() function returns the mask of attributes that this PCI
+ root bridge supports and the mask of attributes that the PCI root bridge is
+ currently using.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Supported A pointer to the mask of attributes that this PCI root
+ bridge supports setting with SetAttributes().
+ @param Attributes A pointer to the mask of attributes that this PCI root
+ bridge is currently using.
+
+
+ @retval EFI_SUCCESS If Supports is not NULL, then the attributes
+ that the PCI root bridge supports is returned
+ in Supports. If Attributes is not NULL, then
+ the attributes that the PCI root bridge is
+ currently using is returned in Attributes.
+ @retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoGetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT UINT64 *Supported,
+ OUT UINT64 *Attributes
+ );
+
+/**
+ Sets attributes for a resource range on a PCI root bridge.
+
+ The SetAttributes() function sets the attributes specified in Attributes for
+ the PCI root bridge on the resource range specified by ResourceBase and
+ ResourceLength. Since the granularity of setting these attributes may vary
+ from resource type to resource type, and from platform to platform, the
+ actual resource range and the one passed in by the caller may differ. As a
+ result, this function may set the attributes specified by Attributes on a
+ larger resource range than the caller requested. The actual range is returned
+ in ResourceBase and ResourceLength. The caller is responsible for verifying
+ that the actual range for which the attributes were set is acceptable.
+
+ @param[in] This A pointer to the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Attributes The mask of attributes to set. If the
+ attribute bit MEMORY_WRITE_COMBINE,
+ MEMORY_CACHED, or MEMORY_DISABLE is set,
+ then the resource range is specified by
+ ResourceBase and ResourceLength. If
+ MEMORY_WRITE_COMBINE, MEMORY_CACHED, and
+ MEMORY_DISABLE are not set, then
+ ResourceBase and ResourceLength are ignored,
+ and may be NULL.
+
+ @param[in, out] ResourceBase A pointer to the base address of the
+ resource range to be modified by the
+ attributes specified by Attributes.
+ @param[in, out] ResourceLength A pointer to the length of the resource
+ range to be modified by the attributes
+ specified by Attributes.
+
+ @retval EFI_SUCCESS The current configuration of this PCI root bridge
+ was returned in Resources.
+ @retval EFI_UNSUPPORTED The current configuration of this PCI root bridge
+ could not be retrieved.
+ @retval EFI_INVALID_PARAMETER Invalid pointer of
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
+
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoSetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINT64 Attributes,
+ IN OUT UINT64 *ResourceBase,
+ IN OUT UINT64 *ResourceLength
+ );
+
+/**
+ Retrieves the current resource settings of this PCI root bridge in the form
+ of a set of ACPI 2.0 resource descriptors.
+
+ There are only two resource descriptor types from the ACPI Specification that
+ may be used to describe the current resources allocated to a PCI root bridge.
+ These are the QWORD Address Space Descriptor (ACPI 2.0 Section 6.4.3.5.1),
+ and the End Tag (ACPI 2.0 Section 6.4.2.8). The QWORD Address Space
+ Descriptor can describe memory, I/O, and bus number ranges for dynamic or
+ fixed resources. The configuration of a PCI root bridge is described with one
+ or more QWORD Address Space Descriptors followed by an End Tag.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[out] Resources A pointer to the ACPI 2.0 resource descriptors that
+ describe the current configuration of this PCI root
+ bridge. The storage for the ACPI 2.0 resource
+ descriptors is allocated by this function. The
+ caller must treat the return buffer as read-only
+ data, and the buffer must not be freed by the
+ caller.
+
+ @retval EFI_SUCCESS The current configuration of this PCI root bridge
+ was returned in Resources.
+ @retval EFI_UNSUPPORTED The current configuration of this PCI root bridge
+ could not be retrieved.
+ @retval EFI_INVALID_PARAMETER Invalid pointer of
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoConfiguration (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT VOID **Resources
+ );
+
+//
+// Memory Controller Pci Root Bridge Io Module Variables
+//
+EFI_METRONOME_ARCH_PROTOCOL *mMetronome;
+
+//
+// Lookup table for increment values based on transfer widths
+//
+UINT8 mInStride[] = {
+ 1, // EfiPciWidthUint8
+ 2, // EfiPciWidthUint16
+ 4, // EfiPciWidthUint32
+ 8, // EfiPciWidthUint64
+ 0, // EfiPciWidthFifoUint8
+ 0, // EfiPciWidthFifoUint16
+ 0, // EfiPciWidthFifoUint32
+ 0, // EfiPciWidthFifoUint64
+ 1, // EfiPciWidthFillUint8
+ 2, // EfiPciWidthFillUint16
+ 4, // EfiPciWidthFillUint32
+ 8 // EfiPciWidthFillUint64
+};
+
+//
+// Lookup table for increment values based on transfer widths
+//
+UINT8 mOutStride[] = {
+ 1, // EfiPciWidthUint8
+ 2, // EfiPciWidthUint16
+ 4, // EfiPciWidthUint32
+ 8, // EfiPciWidthUint64
+ 1, // EfiPciWidthFifoUint8
+ 2, // EfiPciWidthFifoUint16
+ 4, // EfiPciWidthFifoUint32
+ 8, // EfiPciWidthFifoUint64
+ 0, // EfiPciWidthFillUint8
+ 0, // EfiPciWidthFillUint16
+ 0, // EfiPciWidthFillUint32
+ 0 // EfiPciWidthFillUint64
+};
+
+/**
+ Construct the Pci Root Bridge Io protocol
+
+ @param Protocol Point to protocol instance
+ @param HostBridgeHandle Handle of host bridge
+ @param Attri Attribute of host bridge
+ @param ResAperture ResourceAperture for host bridge
+
+ @retval EFI_SUCCESS Success to initialize the Pci Root Bridge.
+**/
+EFI_STATUS
+RootBridgeConstructor (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *Protocol,
+ IN EFI_HANDLE HostBridgeHandle,
+ IN UINT64 Attri,
+ IN PCI_ROOT_BRIDGE_RESOURCE_APERTURE *ResAperture
+ )
+{
+ EFI_STATUS Status;
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ PCI_RESOURCE_TYPE Index;
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (Protocol);
+
+ //
+ // The host to pci bridge, the host memory and io addresses are
+ // direct mapped to pci addresses, so no need translate, set bases to 0.
+ //
+ PrivateData->MemBase = ResAperture->MemBase;
+ PrivateData->IoBase = ResAperture->IoBase;
+
+ //
+ // The host bridge only supports 32bit addressing for memory
+ // and standard IA32 16bit io
+ //
+ PrivateData->MemLimit = ResAperture->MemLimit;
+ PrivateData->IoLimit = ResAperture->IoLimit;
+
+ //
+ // Bus Aperture for this Root Bridge (Possible Range)
+ //
+ PrivateData->BusBase = ResAperture->BusBase;
+ PrivateData->BusLimit = ResAperture->BusLimit;
+
+ //
+ // Specific for this chipset
+ //
+ for (Index = TypeIo; Index < TypeMax; Index++) {
+ PrivateData->ResAllocNode[Index].Type = Index;
+ PrivateData->ResAllocNode[Index].Base = 0;
+ PrivateData->ResAllocNode[Index].Length = 0;
+ PrivateData->ResAllocNode[Index].Status = ResNone;
+ }
+
+ PrivateData->RootBridgeAttrib = Attri;
+
+ PrivateData->Supports = EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO |
+ EFI_PCI_ATTRIBUTE_IDE_SECONDARY_IO |
+ EFI_PCI_ATTRIBUTE_ISA_IO_16 |
+ EFI_PCI_ATTRIBUTE_ISA_MOTHERBOARD_IO |
+ EFI_PCI_ATTRIBUTE_VGA_MEMORY |
+ EFI_PCI_ATTRIBUTE_VGA_IO_16 |
+ EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO_16;
+ PrivateData->Attributes = PrivateData->Supports;
+
+ Protocol->ParentHandle = HostBridgeHandle;
+
+ Protocol->PollMem = RootBridgeIoPollMem;
+ Protocol->PollIo = RootBridgeIoPollIo;
+
+ Protocol->Mem.Read = RootBridgeIoMemRead;
+ Protocol->Mem.Write = RootBridgeIoMemWrite;
+
+ Protocol->Io.Read = RootBridgeIoIoRead;
+ Protocol->Io.Write = RootBridgeIoIoWrite;
+
+ Protocol->CopyMem = RootBridgeIoCopyMem;
+
+ Protocol->Pci.Read = RootBridgeIoPciRead;
+ Protocol->Pci.Write = RootBridgeIoPciWrite;
+
+ Protocol->Map = RootBridgeIoMap;
+ Protocol->Unmap = RootBridgeIoUnmap;
+
+ Protocol->AllocateBuffer = RootBridgeIoAllocateBuffer;
+ Protocol->FreeBuffer = RootBridgeIoFreeBuffer;
+
+ Protocol->Flush = RootBridgeIoFlush;
+
+ Protocol->GetAttributes = RootBridgeIoGetAttributes;
+ Protocol->SetAttributes = RootBridgeIoSetAttributes;
+
+ Protocol->Configuration = RootBridgeIoConfiguration;
+
+ Protocol->SegmentNumber = 0;
+
+ Status = gBS->LocateProtocol (
+ &gEfiMetronomeArchProtocolGuid,
+ NULL,
+ (VOID **)&mMetronome
+ );
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Check parameters for IO,MMIO,PCI read/write services of PCI Root Bridge IO.
+
+ The I/O operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and I/O width restrictions that a PI
+ System on a platform might require. For example on some platforms, width
+ requests of EfiCpuIoWidthUint64 do not work. Misaligned buffers, on the other
+ hand, will be handled by the driver.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] OperationType I/O operation type: IO/MMIO/PCI.
+ @param[in] Width Signifies the width of the I/O or Memory operation.
+ @param[in] Address The base address of the I/O operation.
+ @param[in] Count The number of I/O operations to perform. The number
+ of bytes moved is Width size * Count, starting at
+ Address.
+ @param[in] Buffer For read operations, the destination buffer to
+ store the results. For write operations, the source
+ buffer from which to write data.
+
+ @retval EFI_SUCCESS The parameters for this request pass the
+ checks.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PI system.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_UNSUPPORTED The Buffer is not aligned for the given Width.
+ @retval EFI_UNSUPPORTED The address range specified by Address, Width,
+ and Count is not valid for this PI system.
+**/
+EFI_STATUS
+RootBridgeIoCheckParameter (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN OPERATION_TYPE OperationType,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *PciRbAddr;
+ UINT64 MaxCount;
+ UINT64 Base;
+ UINT64 Limit;
+
+ //
+ // Check to see if Buffer is NULL
+ //
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Check to see if Width is in the valid range
+ //
+ if ((UINT32)Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // For FIFO type, the target address won't increase during the access,
+ // so treat Count as 1
+ //
+ if ((Width >= EfiPciWidthFifoUint8) && (Width <= EfiPciWidthFifoUint64)) {
+ Count = 1;
+ }
+
+ //
+ // Check to see if Width is in the valid range for I/O Port operations
+ //
+ Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
+ if ((OperationType != MemOperation) && (Width == EfiPciWidthUint64)) {
+ ASSERT (FALSE);
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Check to see if Address is aligned
+ //
+ if ((Address & (UINT64)(mInStride[Width] - 1)) != 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ //
+ // Check to see if any address associated with this transfer exceeds the
+ // maximum allowed address. The maximum address implied by the parameters
+ // passed in is Address + Size * Count. If the following condition is met,
+ // then the transfer is not supported.
+ //
+ // Address + Size * Count > Limit + 1
+ //
+ // Since Limit can be the maximum integer value supported by the CPU and
+ // Count can also be the maximum integer value supported by the CPU, this
+ // range check must be adjusted to avoid all oveflow conditions.
+ //
+ // The following form of the range check is equivalent but assumes that
+ // Limit is of the form (2^n - 1).
+ //
+ if (OperationType == IoOperation) {
+ Base = PrivateData->IoBase;
+ Limit = PrivateData->IoLimit;
+ } else if (OperationType == MemOperation) {
+ Base = PrivateData->MemBase;
+ Limit = PrivateData->MemLimit;
+ } else {
+ PciRbAddr = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *)&Address;
+ if ((PciRbAddr->Bus < PrivateData->BusBase) ||
+ (PciRbAddr->Bus > PrivateData->BusLimit))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((PciRbAddr->Device > MAX_PCI_DEVICE_NUMBER) ||
+ (PciRbAddr->Function > MAX_PCI_FUNCTION_NUMBER))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (PciRbAddr->ExtendedRegister != 0) {
+ Address = PciRbAddr->ExtendedRegister;
+ } else {
+ Address = PciRbAddr->Register;
+ }
+
+ Base = 0;
+ Limit = MAX_PCI_REG_ADDRESS;
+ }
+
+ if (Address < Base) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Count == 0) {
+ if (Address > Limit) {
+ return EFI_UNSUPPORTED;
+ }
+ } else {
+ MaxCount = RShiftU64 (Limit, Width);
+ if (MaxCount < (Count - 1)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ if (Address > LShiftU64 (MaxCount - Count + 1, Width)) {
+ return EFI_UNSUPPORTED;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Internal help function for read and write memory space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Write Switch value for Read or Write.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] UserAddress The address within the PCI configuration space for
+ the PCI controller.
+ @param[in] Count The number of PCI configuration operations to
+ perform. Bytes moved is Width size * Count,
+ starting at Address.
+ @param[in, out] UserBuffer For read operations, the destination buffer to
+ store the results. For write operations, the
+ source buffer to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+RootBridgeIoMemRW (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN BOOLEAN Write,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT8 InStride;
+ UINT8 OutStride;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OperationWidth;
+ UINT8 *Uint8Buffer;
+
+ Status = RootBridgeIoCheckParameter (
+ This,
+ MemOperation,
+ Width,
+ Address,
+ Count,
+ Buffer
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ InStride = mInStride[Width];
+ OutStride = mOutStride[Width];
+ OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
+ for (Uint8Buffer = Buffer;
+ Count > 0;
+ Address += InStride, Uint8Buffer += OutStride, Count--)
+ {
+ if (Write) {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ MmioWrite8 ((UINTN)Address, *Uint8Buffer);
+ break;
+ case EfiPciWidthUint16:
+ MmioWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
+ break;
+ case EfiPciWidthUint32:
+ MmioWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
+ break;
+ case EfiPciWidthUint64:
+ MmioWrite64 ((UINTN)Address, *((UINT64 *)Uint8Buffer));
+ break;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ } else {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ *Uint8Buffer = MmioRead8 ((UINTN)Address);
+ break;
+ case EfiPciWidthUint16:
+ *((UINT16 *)Uint8Buffer) = MmioRead16 ((UINTN)Address);
+ break;
+ case EfiPciWidthUint32:
+ *((UINT32 *)Uint8Buffer) = MmioRead32 ((UINTN)Address);
+ break;
+ case EfiPciWidthUint64:
+ *((UINT64 *)Uint8Buffer) = MmioRead64 ((UINTN)Address);
+ break;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Internal help function for read and write IO space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Write Switch value for Read or Write.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] UserAddress The address within the PCI configuration space for
+ the PCI controller.
+ @param[in] Count The number of PCI configuration operations to
+ perform. Bytes moved is Width size * Count,
+ starting at Address.
+ @param[in, out] UserBuffer For read operations, the destination buffer to
+ store the results. For write operations, the
+ source buffer to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+RootBridgeIoIoRW (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN BOOLEAN Write,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT8 InStride;
+ UINT8 OutStride;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OperationWidth;
+ UINT8 *Uint8Buffer;
+
+ Status = RootBridgeIoCheckParameter (
+ This,
+ IoOperation,
+ Width,
+ Address,
+ Count,
+ Buffer
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ InStride = mInStride[Width];
+ OutStride = mOutStride[Width];
+ OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
+
+ #if defined (MDE_CPU_IA32) || defined (MDE_CPU_X64)
+ if (InStride == 0) {
+ if (Write) {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ IoWriteFifo8 ((UINTN)Address, Count, Buffer);
+ return EFI_SUCCESS;
+ case EfiPciWidthUint16:
+ IoWriteFifo16 ((UINTN)Address, Count, Buffer);
+ return EFI_SUCCESS;
+ case EfiPciWidthUint32:
+ IoWriteFifo32 ((UINTN)Address, Count, Buffer);
+ return EFI_SUCCESS;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ } else {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ IoReadFifo8 ((UINTN)Address, Count, Buffer);
+ return EFI_SUCCESS;
+ case EfiPciWidthUint16:
+ IoReadFifo16 ((UINTN)Address, Count, Buffer);
+ return EFI_SUCCESS;
+ case EfiPciWidthUint32:
+ IoReadFifo32 ((UINTN)Address, Count, Buffer);
+ return EFI_SUCCESS;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ }
+ }
+
+ #endif
+
+ for (Uint8Buffer = Buffer;
+ Count > 0;
+ Address += InStride, Uint8Buffer += OutStride, Count--)
+ {
+ if (Write) {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ IoWrite8 ((UINTN)Address, *Uint8Buffer);
+ break;
+ case EfiPciWidthUint16:
+ IoWrite16 ((UINTN)Address, *((UINT16 *)Uint8Buffer));
+ break;
+ case EfiPciWidthUint32:
+ IoWrite32 ((UINTN)Address, *((UINT32 *)Uint8Buffer));
+ break;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ } else {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ *Uint8Buffer = IoRead8 ((UINTN)Address);
+ break;
+ case EfiPciWidthUint16:
+ *((UINT16 *)Uint8Buffer) = IoRead16 ((UINTN)Address);
+ break;
+ case EfiPciWidthUint32:
+ *((UINT32 *)Uint8Buffer) = IoRead32 ((UINTN)Address);
+ break;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Internal help function for read and write PCI configuration space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Write Switch value for Read or Write.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] UserAddress The address within the PCI configuration space for
+ the PCI controller.
+ @param[in] Count The number of PCI configuration operations to
+ perform. Bytes moved is Width size * Count,
+ starting at Address.
+ @param[in, out] UserBuffer For read operations, the destination buffer to
+ store the results. For write operations, the
+ source buffer to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+RootBridgeIoPciRW (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN BOOLEAN Write,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_STATUS Status;
+ UINT8 InStride;
+ UINT8 OutStride;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OperationWidth;
+ UINT8 *Uint8Buffer;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *PciRbAddr;
+ UINTN PcieRegAddr;
+
+ Status = RootBridgeIoCheckParameter (
+ This,
+ PciOperation,
+ Width,
+ Address,
+ Count,
+ Buffer
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ PciRbAddr = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *)&Address;
+
+ PcieRegAddr = (UINTN)PCI_LIB_ADDRESS (
+ PciRbAddr->Bus,
+ PciRbAddr->Device,
+ PciRbAddr->Function,
+ (PciRbAddr->ExtendedRegister != 0) ? \
+ PciRbAddr->ExtendedRegister :
+ PciRbAddr->Register
+ );
+
+ InStride = mInStride[Width];
+ OutStride = mOutStride[Width];
+ OperationWidth = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)(Width & 0x03);
+ for (Uint8Buffer = Buffer;
+ Count > 0;
+ PcieRegAddr += InStride, Uint8Buffer += OutStride, Count--)
+ {
+ if (Write) {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ PciWrite8 (PcieRegAddr, *Uint8Buffer);
+ break;
+ case EfiPciWidthUint16:
+ PciWrite16 (PcieRegAddr, *((UINT16 *)Uint8Buffer));
+ break;
+ case EfiPciWidthUint32:
+ PciWrite32 (PcieRegAddr, *((UINT32 *)Uint8Buffer));
+ break;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ } else {
+ switch (OperationWidth) {
+ case EfiPciWidthUint8:
+ *Uint8Buffer = PciRead8 (PcieRegAddr);
+ break;
+ case EfiPciWidthUint16:
+ *((UINT16 *)Uint8Buffer) = PciRead16 (PcieRegAddr);
+ break;
+ case EfiPciWidthUint32:
+ *((UINT32 *)Uint8Buffer) = PciRead32 (PcieRegAddr);
+ break;
+ default:
+ //
+ // The RootBridgeIoCheckParameter call above will ensure that this
+ // path is not taken.
+ //
+ ASSERT (FALSE);
+ break;
+ }
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Polls an address in memory mapped I/O space until an exit condition is met,
+ or a timeout occurs.
+
+ This function provides a standard way to poll a PCI memory location. A PCI
+ memory read operation is performed at the PCI memory address specified by
+ Address for the width specified by Width. The result of this PCI memory read
+ operation is stored in Result. This PCI memory read operation is repeated
+ until either a timeout of Delay 100 ns units has expired, or (Result & Mask)
+ is equal to Value.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The base address of the memory operations. The caller
+ is responsible for aligning Address if required.
+ @param[in] Mask Mask used for the polling criteria. Bytes above Width
+ in Mask are ignored. The bits in the bytes below Width
+ which are zero in Mask are ignored when polling the
+ memory address.
+ @param[in] Value The comparison value used for the polling exit
+ criteria.
+ @param[in] Delay The number of 100 ns units to poll. Note that timer
+ available may be of poorer granularity.
+ @param[out] Result Pointer to the last value read from the memory
+ location.
+
+ @retval EFI_SUCCESS The last data returned from the access matched
+ the poll exit criteria.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_INVALID_PARAMETER Result is NULL.
+ @retval EFI_TIMEOUT Delay expired before a match occurred.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPollMem (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINT64 Mask,
+ IN UINT64 Value,
+ IN UINT64 Delay,
+ OUT UINT64 *Result
+ )
+{
+ EFI_STATUS Status;
+ UINT64 NumberOfTicks;
+ UINT32 Remainder;
+
+ if (Result == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((UINT32)Width > EfiPciWidthUint64) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // No matter what, always do a single poll.
+ //
+ Status = This->Mem.Read (This, Width, Address, 1, Result);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if ((*Result & Mask) == Value) {
+ return EFI_SUCCESS;
+ }
+
+ if (Delay == 0) {
+ return EFI_SUCCESS;
+ } else {
+ //
+ // Determine the proper # of metronome ticks to wait for polling the
+ // location. The nuber of ticks is Roundup (Delay /
+ // mMetronome->TickPeriod)+1
+ // The "+1" to account for the possibility of the first tick being short
+ // because we started in the middle of a tick.
+ //
+ // BugBug: overriding mMetronome->TickPeriod with UINT32 until Metronome
+ // protocol definition is updated.
+ //
+ NumberOfTicks = DivU64x32Remainder (
+ Delay,
+ (UINT32)mMetronome->TickPeriod,
+ &Remainder
+ );
+ if (Remainder != 0) {
+ NumberOfTicks += 1;
+ }
+
+ NumberOfTicks += 1;
+
+ while (NumberOfTicks != 0) {
+ mMetronome->WaitForTick (mMetronome, 1);
+
+ Status = This->Mem.Read (This, Width, Address, 1, Result);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if ((*Result & Mask) == Value) {
+ return EFI_SUCCESS;
+ }
+
+ NumberOfTicks -= 1;
+ }
+ }
+
+ return EFI_TIMEOUT;
+}
+
+/**
+ Reads from the I/O space of a PCI Root Bridge. Returns when either the
+ polling exit criteria is satisfied or after a defined duration.
+
+ This function provides a standard way to poll a PCI I/O location. A PCI I/O
+ read operation is performed at the PCI I/O address specified by Address for
+ the width specified by Width.
+ The result of this PCI I/O read operation is stored in Result. This PCI I/O
+ read operation is repeated until either a timeout of Delay 100 ns units has
+ expired, or (Result & Mask) is equal to Value.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the I/O operations.
+ @param[in] Address The base address of the I/O operations. The caller is
+ responsible for aligning Address if required.
+ @param[in] Mask Mask used for the polling criteria. Bytes above Width in
+ Mask are ignored. The bits in the bytes below Width
+ which are zero in Mask are ignored when polling the I/O
+ address.
+ @param[in] Value The comparison value used for the polling exit criteria.
+ @param[in] Delay The number of 100 ns units to poll. Note that timer
+ available may be of poorer granularity.
+ @param[out] Result Pointer to the last value read from the memory location.
+
+ @retval EFI_SUCCESS The last data returned from the access matched
+ the poll exit criteria.
+ @retval EFI_INVALID_PARAMETER Width is invalid.
+ @retval EFI_INVALID_PARAMETER Result is NULL.
+ @retval EFI_TIMEOUT Delay expired before a match occurred.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPollIo (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINT64 Mask,
+ IN UINT64 Value,
+ IN UINT64 Delay,
+ OUT UINT64 *Result
+ )
+{
+ EFI_STATUS Status;
+ UINT64 NumberOfTicks;
+ UINT32 Remainder;
+
+ //
+ // No matter what, always do a single poll.
+ //
+
+ if (Result == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if ((UINT32)Width > EfiPciWidthUint64) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = This->Io.Read (This, Width, Address, 1, Result);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if ((*Result & Mask) == Value) {
+ return EFI_SUCCESS;
+ }
+
+ if (Delay == 0) {
+ return EFI_SUCCESS;
+ } else {
+ //
+ // Determine the proper # of metronome ticks to wait for polling the
+ // location. The number of ticks is Roundup (Delay /
+ // mMetronome->TickPeriod)+1
+ // The "+1" to account for the possibility of the first tick being short
+ // because we started in the middle of a tick.
+ //
+ NumberOfTicks = DivU64x32Remainder (
+ Delay,
+ (UINT32)mMetronome->TickPeriod,
+ &Remainder
+ );
+ if (Remainder != 0) {
+ NumberOfTicks += 1;
+ }
+
+ NumberOfTicks += 1;
+
+ while (NumberOfTicks != 0) {
+ mMetronome->WaitForTick (mMetronome, 1);
+
+ Status = This->Io.Read (This, Width, Address, 1, Result);
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if ((*Result & Mask) == Value) {
+ return EFI_SUCCESS;
+ }
+
+ NumberOfTicks -= 1;
+ }
+ }
+
+ return EFI_TIMEOUT;
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge memory space.
+
+ The Mem.Read(), and Mem.Write() functions enable a driver to access PCI
+ controller registers in the PCI root bridge memory space.
+ The memory operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and memory width restrictions that a
+ PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operation.
+ @param[in] Address The base address of the memory operation. The caller
+ is responsible for aligning the Address if required.
+ @param[in] Count The number of memory operations to perform. Bytes
+ moved is Width size * Count, starting at Address.
+ @param[out] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoMemRead (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ )
+{
+ return RootBridgeIoMemRW (This, FALSE, Width, Address, Count, Buffer);
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge memory space.
+
+ The Mem.Read(), and Mem.Write() functions enable a driver to access PCI
+ controller registers in the PCI root bridge memory space.
+ The memory operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and memory width restrictions that a
+ PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operation.
+ @param[in] Address The base address of the memory operation. The caller
+ is responsible for aligning the Address if required.
+ @param[in] Count The number of memory operations to perform. Bytes
+ moved is Width size * Count, starting at Address.
+ @param[in] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoMemWrite (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ return RootBridgeIoMemRW (This, TRUE, Width, Address, Count, Buffer);
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge I/O space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The base address of the I/O operation. The caller is
+ responsible for aligning the Address if required.
+ @param[in] Count The number of I/O operations to perform. Bytes moved
+ is Width size * Count, starting at Address.
+ @param[out] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoIoRead (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ )
+{
+ return RootBridgeIoIoRW (This, FALSE, Width, Address, Count, Buffer);
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root
+ bridge I/O space.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The base address of the I/O operation. The caller is
+ responsible for aligning the Address if required.
+ @param[in] Count The number of I/O operations to perform. Bytes moved
+ is Width size * Count, starting at Address.
+ @param[in] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoIoWrite (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ return RootBridgeIoIoRW (This, TRUE, Width, Address, Count, Buffer);
+}
+
+/**
+ Enables a PCI driver to copy one region of PCI root bridge memory space to
+ another region of PCI root bridge memory space.
+
+ The CopyMem() function enables a PCI driver to copy one region of PCI root
+ bridge memory space to another region of PCI root bridge memory space. This
+ is especially useful for video scroll operation on a memory mapped video
+ buffer.
+ The memory operations are carried out exactly as requested. The caller is
+ responsible for satisfying any alignment and memory width restrictions that a
+ PCI root bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
+ instance.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] DestAddress The destination address of the memory operation. The
+ caller is responsible for aligning the DestAddress if
+ required.
+ @param[in] SrcAddress The source address of the memory operation. The caller
+ is responsible for aligning the SrcAddress if
+ required.
+ @param[in] Count The number of memory operations to perform. Bytes
+ moved is Width size * Count, starting at DestAddress
+ and SrcAddress.
+
+ @retval EFI_SUCCESS The data was copied from one memory region
+ to another memory region.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoCopyMem (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 DestAddress,
+ IN UINT64 SrcAddress,
+ IN UINTN Count
+ )
+{
+ EFI_STATUS Status;
+ BOOLEAN Direction;
+ UINTN Stride;
+ UINTN Index;
+ UINT64 Result;
+
+ if ((UINT32)Width > EfiPciWidthUint64) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DestAddress == SrcAddress) {
+ return EFI_SUCCESS;
+ }
+
+ Stride = (UINTN)(1 << Width);
+
+ Direction = TRUE;
+ if ((DestAddress > SrcAddress) &&
+ (DestAddress < (SrcAddress + Count * Stride)))
+ {
+ Direction = FALSE;
+ SrcAddress = SrcAddress + (Count-1) * Stride;
+ DestAddress = DestAddress + (Count-1) * Stride;
+ }
+
+ for (Index = 0; Index < Count; Index++) {
+ Status = RootBridgeIoMemRead (
+ This,
+ Width,
+ SrcAddress,
+ 1,
+ &Result
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ Status = RootBridgeIoMemWrite (
+ This,
+ Width,
+ DestAddress,
+ 1,
+ &Result
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ if (Direction) {
+ SrcAddress += Stride;
+ DestAddress += Stride;
+ } else {
+ SrcAddress -= Stride;
+ DestAddress -= Stride;
+ }
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in a PCI root
+ bridge's configuration space.
+
+ The Pci.Read() and Pci.Write() functions enable a driver to access PCI
+ configuration registers for a PCI controller.
+ The PCI Configuration operations are carried out exactly as requested. The
+ caller is responsible for any alignment and PCI configuration width issues
+ that a PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The address within the PCI configuration space for the
+ PCI controller.
+ @param[in] Count The number of PCI configuration operations to perform.
+ Bytes moved is Width size * Count, starting at
+ Address.
+ @param[out] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPciRead (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ OUT VOID *Buffer
+ )
+{
+ return RootBridgeIoPciRW (This, FALSE, Width, Address, Count, Buffer);
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in a PCI root
+ bridge's configuration space.
+
+ The Pci.Read() and Pci.Write() functions enable a driver to access PCI
+ configuration registers for a PCI controller.
+ The PCI Configuration operations are carried out exactly as requested. The
+ caller is responsible for any alignment and PCI configuration width issues
+ that a PCI Root Bridge on a platform might require.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Address The address within the PCI configuration space for the
+ PCI controller.
+ @param[in] Count The number of PCI configuration operations to perform.
+ Bytes moved is Width size * Count, starting at
+ Address.
+ @param[in] Buffer For read operations, the destination buffer to store
+ the results. For write operations, the source buffer
+ to write data from.
+
+ @retval EFI_SUCCESS The data was read from or written to the PCI
+ root bridge.
+ @retval EFI_INVALID_PARAMETER Width is invalid for this PCI root bridge.
+ @retval EFI_INVALID_PARAMETER Buffer is NULL.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoPciWrite (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Address,
+ IN UINTN Count,
+ IN VOID *Buffer
+ )
+{
+ return RootBridgeIoPciRW (This, TRUE, Width, Address, Count, Buffer);
+}
+
+/**
+ Provides the PCI controller-specific addresses required to access system
+ memory from a DMA bus master.
+
+ The Map() function provides the PCI controller specific addresses needed to
+ access system memory. This function is used to map system memory for PCI bus
+ master DMA accesses.
+
+ @param[in] This A pointer to the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Operation Indicates if the bus master is going to read
+ or write to system memory.
+ @param[in] HostAddress The system memory address to map to the PCI
+ controller.
+ @param[in, out] NumberOfBytes On input the number of bytes to map. On
+ output the number of bytes that were mapped.
+ @param[out] DeviceAddress The resulting map address for the bus master
+ PCI controller to use to access the system
+ memory's HostAddress.
+ @param[out] Mapping The value to pass to Unmap() when the bus
+ master DMA operation is complete.
+
+ @retval EFI_SUCCESS The range was mapped for the returned
+ NumberOfBytes.
+ @retval EFI_INVALID_PARAMETER Operation is invalid.
+ @retval EFI_INVALID_PARAMETER HostAddress is NULL.
+ @retval EFI_INVALID_PARAMETER NumberOfBytes is NULL.
+ @retval EFI_INVALID_PARAMETER DeviceAddress is NULL.
+ @retval EFI_INVALID_PARAMETER Mapping is NULL.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common
+ buffer.
+ @retval EFI_DEVICE_ERROR The system hardware could not map the
+ requested address.
+ @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
+ lack of resources.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoMap (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION Operation,
+ IN VOID *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ )
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS PhysicalAddress;
+ MAP_INFO *MapInfo;
+
+ if ((HostAddress == NULL) || (NumberOfBytes == NULL) || (DeviceAddress == NULL) ||
+ (Mapping == NULL))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Initialize the return values to their defaults
+ //
+ *Mapping = NULL;
+
+ //
+ // Make sure that Operation is valid
+ //
+ if ((UINT32)Operation >= EfiPciOperationMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Most PCAT like chipsets can not handle performing DMA above 4GB.
+ // If any part of the DMA transfer being mapped is above 4GB, then
+ // map the DMA transfer to a buffer below 4GB.
+ //
+ PhysicalAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress;
+ if ((PhysicalAddress + *NumberOfBytes) > 0x100000000ULL) {
+ //
+ // Common Buffer operations can not be remapped. If the common buffer
+ // if above 4GB, then it is not possible to generate a mapping, so return
+ // an error.
+ //
+ if ((Operation == EfiPciOperationBusMasterCommonBuffer) ||
+ (Operation == EfiPciOperationBusMasterCommonBuffer64))
+ {
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Allocate a MAP_INFO structure to remember the mapping when Unmap() is
+ // called later.
+ //
+ Status = gBS->AllocatePool (
+ EfiBootServicesData,
+ sizeof (MAP_INFO),
+ (VOID **)&MapInfo
+ );
+ if (EFI_ERROR (Status)) {
+ *NumberOfBytes = 0;
+ return Status;
+ }
+
+ //
+ // Return a pointer to the MAP_INFO structure in Mapping
+ //
+ *Mapping = MapInfo;
+
+ //
+ // Initialize the MAP_INFO structure
+ //
+ MapInfo->Operation = Operation;
+ MapInfo->NumberOfBytes = *NumberOfBytes;
+ MapInfo->NumberOfPages = EFI_SIZE_TO_PAGES (*NumberOfBytes);
+ MapInfo->HostAddress = PhysicalAddress;
+ MapInfo->MappedHostAddress = 0x00000000ffffffff;
+
+ //
+ // Allocate a buffer below 4GB to map the transfer to.
+ //
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ EfiBootServicesData,
+ MapInfo->NumberOfPages,
+ &MapInfo->MappedHostAddress
+ );
+ if (EFI_ERROR (Status)) {
+ gBS->FreePool (MapInfo);
+ *NumberOfBytes = 0;
+ return Status;
+ }
+
+ //
+ // If this is a read operation from the Bus Master's point of view,
+ // then copy the contents of the real buffer into the mapped buffer
+ // so the Bus Master can read the contents of the real buffer.
+ //
+ if ((Operation == EfiPciOperationBusMasterRead) ||
+ (Operation == EfiPciOperationBusMasterRead64))
+ {
+ CopyMem (
+ (VOID *)(UINTN)MapInfo->MappedHostAddress,
+ (VOID *)(UINTN)MapInfo->HostAddress,
+ MapInfo->NumberOfBytes
+ );
+ }
+
+ //
+ // The DeviceAddress is the address of the maped buffer below 4GB
+ //
+ *DeviceAddress = MapInfo->MappedHostAddress;
+ } else {
+ //
+ // The transfer is below 4GB, so the DeviceAddress is simply the
+ // HostAddress
+ //
+ *DeviceAddress = PhysicalAddress;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Completes the Map() operation and releases any corresponding resources.
+
+ The Unmap() function completes the Map() operation and releases any
+ corresponding resources.
+ If the operation was an EfiPciOperationBusMasterWrite or
+ EfiPciOperationBusMasterWrite64, the data is committed to the target system
+ memory.
+ Any resources used for the mapping are freed.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Mapping The mapping value returned from Map().
+
+ @retval EFI_SUCCESS The range was unmapped.
+ @retval EFI_INVALID_PARAMETER Mapping is not a value that was returned by
+ Map().
+ @retval EFI_DEVICE_ERROR The data was not committed to the target
+ system memory.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoUnmap (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ )
+{
+ MAP_INFO *MapInfo;
+
+ //
+ // See if the Map() operation associated with this Unmap() required a mapping
+ // buffer. If a mapping buffer was not required, then this function simply
+ // returns EFI_SUCCESS.
+ //
+ if (Mapping != NULL) {
+ //
+ // Get the MAP_INFO structure from Mapping
+ //
+ MapInfo = (MAP_INFO *)Mapping;
+
+ //
+ // If this is a write operation from the Bus Master's point of view,
+ // then copy the contents of the mapped buffer into the real buffer
+ // so the processor can read the contents of the real buffer.
+ //
+ if ((MapInfo->Operation == EfiPciOperationBusMasterWrite) ||
+ (MapInfo->Operation == EfiPciOperationBusMasterWrite64))
+ {
+ CopyMem (
+ (VOID *)(UINTN)MapInfo->HostAddress,
+ (VOID *)(UINTN)MapInfo->MappedHostAddress,
+ MapInfo->NumberOfBytes
+ );
+ }
+
+ //
+ // Free the mapped buffer and the MAP_INFO structure.
+ //
+ gBS->FreePages (MapInfo->MappedHostAddress, MapInfo->NumberOfPages);
+ gBS->FreePool (Mapping);
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer
+ or EfiPciOperationBusMasterCommonBuffer64 mapping.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Type This parameter is not used and must be ignored.
+ @param MemoryType The type of memory to allocate, EfiBootServicesData or
+ EfiRuntimeServicesData.
+ @param Pages The number of pages to allocate.
+ @param HostAddress A pointer to store the base system memory address of the
+ allocated range.
+ @param Attributes The requested bit mask of attributes for the allocated
+ range. Only the attributes
+ EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE,
+ EFI_PCI_ATTRIBUTE_MEMORY_CACHED, and
+ EFI_PCI_ATTRIBUTE_DUAL_ADDRESS_CYCLE may be used with this
+ function.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_INVALID_PARAMETER MemoryType is invalid.
+ @retval EFI_INVALID_PARAMETER HostAddress is NULL.
+ @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal
+ attribute bits are MEMORY_WRITE_COMBINE,
+ MEMORY_CACHED, and DUAL_ADDRESS_CYCLE.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoAllocateBuffer (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN Pages,
+ OUT VOID **HostAddress,
+ IN UINT64 Attributes
+ )
+{
+ EFI_STATUS Status;
+ EFI_PHYSICAL_ADDRESS PhysicalAddress;
+
+ //
+ // Validate Attributes
+ //
+ if ((Attributes & EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER) != 0) {
+ return EFI_UNSUPPORTED;
+ }
+
+ //
+ // Check for invalid inputs
+ //
+ if (HostAddress == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // The only valid memory types are EfiBootServicesData and
+ // EfiRuntimeServicesData
+ //
+ if ((MemoryType != EfiBootServicesData) &&
+ (MemoryType != EfiRuntimeServicesData))
+ {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Limit allocations to memory below 4GB
+ //
+ PhysicalAddress = (EFI_PHYSICAL_ADDRESS)(0xffffffff);
+
+ Status = gBS->AllocatePages (
+ AllocateMaxAddress,
+ MemoryType,
+ Pages,
+ &PhysicalAddress
+ );
+ if (EFI_ERROR (Status)) {
+ return Status;
+ }
+
+ *HostAddress = (VOID *)(UINTN)PhysicalAddress;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Frees memory that was allocated with AllocateBuffer().
+
+ The FreeBuffer() function frees memory that was allocated with
+ AllocateBuffer().
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Pages The number of pages to free.
+ @param HostAddress The base system memory address of the allocated range.
+
+ @retval EFI_SUCCESS The requested memory pages were freed.
+ @retval EFI_INVALID_PARAMETER The memory range specified by HostAddress and
+ Pages was not allocated with AllocateBuffer().
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoFreeBuffer (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ OUT VOID *HostAddress
+ )
+{
+ return gBS->FreePages ((EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress, Pages);
+}
+
+/**
+ Flushes all PCI posted write transactions from a PCI host bridge to system
+ memory.
+
+ The Flush() function flushes any PCI posted write transactions from a PCI
+ host bridge to system memory. Posted write transactions are generated by PCI
+ bus masters when they perform write transactions to target addresses in
+ system memory.
+ This function does not flush posted write transactions from any PCI bridges.
+ A PCI controller specific action must be taken to guarantee that the posted
+ write transactions have been flushed from the PCI controller and from all the
+ PCI bridges into the PCI host bridge. This is typically done with a PCI read
+ transaction from the PCI controller prior to calling Flush().
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+
+ @retval EFI_SUCCESS The PCI posted write transactions were flushed
+ from the PCI host bridge to system memory.
+ @retval EFI_DEVICE_ERROR The PCI posted write transactions were not flushed
+ from the PCI host bridge due to a hardware error.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoFlush (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This
+ )
+{
+ //
+ // not supported yet
+ //
+ return EFI_SUCCESS;
+}
+
+/**
+ Gets the attributes that a PCI root bridge supports setting with
+ SetAttributes(), and the attributes that a PCI root bridge is currently
+ using.
+
+ The GetAttributes() function returns the mask of attributes that this PCI
+ root bridge supports and the mask of attributes that the PCI root bridge is
+ currently using.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Supported A pointer to the mask of attributes that this PCI root
+ bridge supports setting with SetAttributes().
+ @param Attributes A pointer to the mask of attributes that this PCI root
+ bridge is currently using.
+
+ @retval EFI_SUCCESS If Supports is not NULL, then the attributes
+ that the PCI root bridge supports is returned
+ in Supports. If Attributes is not NULL, then
+ the attributes that the PCI root bridge is
+ currently using is returned in Attributes.
+ @retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoGetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT UINT64 *Supported,
+ OUT UINT64 *Attributes
+ )
+{
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ if ((Attributes == NULL) && (Supported == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Set the return value for Supported and Attributes
+ //
+ if (Supported != NULL) {
+ *Supported = PrivateData->Supports;
+ }
+
+ if (Attributes != NULL) {
+ *Attributes = PrivateData->Attributes;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Sets attributes for a resource range on a PCI root bridge.
+
+ The SetAttributes() function sets the attributes specified in Attributes for
+ the PCI root bridge on the resource range specified by ResourceBase and
+ ResourceLength. Since the granularity of setting these attributes may vary
+ from resource type to resource type, and from platform to platform, the
+ actual resource range and the one passed in by the caller may differ. As a
+ result, this function may set the attributes specified by Attributes on a
+ larger resource range than the caller requested. The actual range is returned
+ in ResourceBase and ResourceLength. The caller is responsible for verifying
+ that the actual range for which the attributes were set is acceptable.
+
+ @param[in] This A pointer to the
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Attributes The mask of attributes to set. If the
+ attribute bit MEMORY_WRITE_COMBINE,
+ MEMORY_CACHED, or MEMORY_DISABLE is set,
+ then the resource range is specified by
+ ResourceBase and ResourceLength. If
+ MEMORY_WRITE_COMBINE, MEMORY_CACHED, and
+ MEMORY_DISABLE are not set, then
+ ResourceBase and ResourceLength are ignored,
+ and may be NULL.
+ @param[in, out] ResourceBase A pointer to the base address of the
+ resource range to be modified by the
+ attributes specified by Attributes.
+ @param[in, out] ResourceLength A pointer to the length of the resource
+ range to be modified by the attributes
+ specified by Attributes.
+
+ @retval EFI_SUCCESS The current configuration of this PCI root bridge
+ was returned in Resources.
+ @retval EFI_UNSUPPORTED The current configuration of this PCI root bridge
+ could not be retrieved.
+ @retval EFI_INVALID_PARAMETER Invalid pointer of
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoSetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINT64 Attributes,
+ IN OUT UINT64 *ResourceBase,
+ IN OUT UINT64 *ResourceLength
+ )
+{
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ if (Attributes != 0) {
+ if ((Attributes & (~(PrivateData->Supports))) != 0) {
+ return EFI_UNSUPPORTED;
+ }
+ }
+
+ //
+ // This is a generic driver for a PC-AT class system. It does not have any
+ // chipset specific knowlegde, so none of the attributes can be set or
+ // cleared. Any attempt to set attribute that are already set will succeed,
+ // and any attempt to set an attribute that is not supported will fail.
+ //
+ if (Attributes & (~PrivateData->Attributes)) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Retrieves the current resource settings of this PCI root bridge in the form
+ of a set of ACPI 2.0 resource descriptors.
+
+ There are only two resource descriptor types from the ACPI Specification that
+ may be used to describe the current resources allocated to a PCI root bridge.
+ These are the QWORD Address Space Descriptor (ACPI 2.0 Section 6.4.3.5.1),
+ and the End Tag (ACPI 2.0 Section 6.4.2.8). The QWORD Address Space
+ Descriptor can describe memory, I/O, and bus number ranges for dynamic or
+ fixed resources. The configuration of a PCI root bridge is described with one
+ or more QWORD Address Space Descriptors followed by an End Tag.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[out] Resources A pointer to the ACPI 2.0 resource descriptors that
+ describe the current configuration of this PCI root
+ bridge. The storage for the ACPI 2.0 resource
+ descriptors is allocated by this function. The
+ caller must treat the return buffer as read-only
+ data, and the buffer must not be freed by the
+ caller.
+
+ @retval EFI_SUCCESS The current configuration of this PCI root bridge
+ was returned in Resources.
+ @retval EFI_UNSUPPORTED The current configuration of this PCI root bridge
+ could not be retrieved.
+ @retval EFI_INVALID_PARAMETER Invalid pointer of
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoConfiguration (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT VOID **Resources
+ )
+{
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ UINTN Index;
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ for (Index = 0; Index < TypeMax; Index++) {
+ if (PrivateData->ResAllocNode[Index].Status == ResAllocated) {
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
+
+ Desc = &Configuration.SpaceDesp[Index];
+ Desc->AddrRangeMin = PrivateData->ResAllocNode[Index].Base;
+ Desc->AddrRangeMax = PrivateData->ResAllocNode[Index].Base +
+ PrivateData->ResAllocNode[Index].Length - 1;
+ Desc->AddrLen = PrivateData->ResAllocNode[Index].Length;
+ }
+ }
+
+ *Resources = &Configuration;
+ return EFI_SUCCESS;
+}
--
2.31.1
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