diff options
| author | Guo Mang <mang.guo@intel.com> | 2016-12-23 10:59:38 +0800 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2016-12-26 19:15:06 +0800 |
| commit | 1e3529d7314a4226c07af238181121a1f1e813d8 (patch) | |
| tree | 96bdadddb479a631d485b95609404f65a76b068d /Silicon | |
| parent | d254955360382276b857852962265b1ed9b63ae8 (diff) | |
| download | edk2-platforms-1e3529d7314a4226c07af238181121a1f1e813d8.tar.xz | |
BroxtonSiPkg: Add PciHostBridge
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Guo Mang <mang.guo@intel.com>
Diffstat (limited to 'Silicon')
5 files changed, 3162 insertions, 0 deletions
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.c b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.c new file mode 100644 index 0000000000..834cace036 --- /dev/null +++ b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.c @@ -0,0 +1,1152 @@ +/** @file
+ Pci Host Bridge driver:
+ Provides the basic interfaces to abstract a PCI Host Bridge Resource Allocation.
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "PciRootBridge.h"
+#include "PciHostBridge.h"
+#include "SaAccess.h"
+#include "PlatformBaseAddresses.h"
+#include <Library/SideBandLib.h>
+#include <ScRegs/RegsUsb.h>
+#include <Library/SteppingLib.h>
+
+//
+// Support 64 K IO space
+//
+#define RES_IO_BASE 0x1000
+#define RES_IO_LIMIT 0xFFFF
+//
+// Support 4G address space
+//
+#define RES_MEM_BASE_1 0x80000000
+#define RES_MEM_LIMIT_1 (ACPI_MMIO_BASE_ADDRESS - 1)
+
+//
+// Hard code: Root Bridge Number within the host bridge
+// Root Bridge's attribute
+// Root Bridge's device path
+// Root Bridge's resource appeture
+//
+static UINTN RootBridgeNumber[1] = { 1 };
+
+static UINT64 RootBridgeAttribute[1][1] = { EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM };
+
+static 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
+ }
+};
+
+static PCI_ROOT_BRIDGE_RESOURCE_APPETURE mResAppeture[1][1] = { { 0, 255, 0, 0xffffffff, 0, 1 << 16 } };
+
+static EFI_HANDLE mDriverImageHandle;
+
+//
+// Implementation
+//
+/**
+ Entry point of PCI Host Bridge driver.
+
+ @param[in] ImageHandle The image handle of the driver.
+ @param[in] SystemTable A pointer to the EFI system table.
+
+ @retval EFI_DEVICE_ERROR Start Failed.
+ @retval EFI_SUCCESS Driver Start OK.
+ @retval EFI_BUFFER_TOO_SMALL Fail to allocate required resource.
+
+**/
+EFI_STATUS
+EFIAPI
+PciHostBridgeEntryPoint (
+ 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 dBMBOUND = 0;
+ UINT64 Length;
+ UINT32 buffer32;
+ EFI_GCD_MEMORY_SPACE_DESCRIPTOR PciMemorySpaceDescriptor;
+ UINT64 BaseAddress;
+ UINT64 Attributes;
+
+ mDriverImageHandle = ImageHandle;
+
+ //
+ // This system has one Host Bridge (one Root Bridge in this Host Bridge)
+ //
+ //
+ // Create Host Bridge Device Handle
+ //
+ for (Loop1 = 0; Loop1 < HOST_BRIDGE_NUMBER; Loop1++) {
+ HostBridge = AllocatePool (sizeof (PCI_HOST_BRIDGE_INSTANCE));
+ if (HostBridge == NULL) {
+ ASSERT (FALSE);
+ return EFI_BUFFER_TOO_SMALL;
+ }
+
+ HostBridge->Signature = PCI_HOST_BRIDGE_SIGNATURE;
+ HostBridge->RootBridgeNumber = RootBridgeNumber[Loop1];
+ HostBridge->ResourceSubmited = FALSE;
+ HostBridge->CanRestarted = TRUE;
+
+ HostBridge->ResAlloc.NotifyPhase = NotifyPhase;
+ HostBridge->ResAlloc.GetNextRootBridge = GetNextRootBridge;
+ HostBridge->ResAlloc.GetAllocAttributes = GetAttributes;
+ HostBridge->ResAlloc.StartBusEnumeration = StartBusEnumeration;
+ HostBridge->ResAlloc.SetBusNumbers = SetBusNumbers;
+ HostBridge->ResAlloc.SubmitResources = SubmitResources;
+ HostBridge->ResAlloc.GetProposedResources = GetProposedResources;
+ HostBridge->ResAlloc.PreprocessController = PreprocessController;
+
+ HostBridge->HostBridgeHandle = NULL;
+ Status = gBS->InstallProtocolInterface (
+ &HostBridge->HostBridgeHandle,
+ &gEfiPciHostBridgeResourceAllocationProtocolGuid,
+ EFI_NATIVE_INTERFACE,
+ &HostBridge->ResAlloc
+ );
+
+ if (EFI_ERROR (Status)) {
+ FreePool (HostBridge);
+ return EFI_DEVICE_ERROR;
+ }
+
+ //
+ // Create Root Bridge Device Handle in this Host Bridge
+ //
+ InitializeListHead (&HostBridge->Head);
+
+ for (Loop2 = 0; Loop2 < HostBridge->RootBridgeNumber; Loop2++) {
+ PrivateData = AllocatePool (sizeof (PCI_ROOT_BRIDGE_INSTANCE));
+ if (PrivateData == NULL) {
+ ASSERT (FALSE);
+ return EFI_BUFFER_TOO_SMALL;
+ }
+ PrivateData->Signature = PCI_ROOT_BRIDGE_SIGNATURE;
+
+ PrivateData->DevicePath = (EFI_DEVICE_PATH_PROTOCOL *) &mEfiPciRootBridgeDevicePath[Loop1][Loop2];
+ RootBridgeConstructor (
+ &PrivateData->Io,
+ HostBridge->HostBridgeHandle,
+ RootBridgeAttribute[Loop1][Loop2],
+ &mResAppeture[Loop1][Loop2]
+ );
+
+ PrivateData->Handle = NULL;
+ 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,
+ RES_IO_BASE,
+ RES_IO_LIMIT - RES_IO_BASE + 1
+ );
+
+ buffer32 = (MmioRead32 ((UINTN) PcdGet64 (PcdPciExpressBaseAddress) + 0xBC) & 0xFFF00000);
+ dBMBOUND = (EFI_PHYSICAL_ADDRESS) (buffer32);
+ Length = RES_MEM_LIMIT_1 - dBMBOUND + 1;
+ if (Length) {
+ DEBUG ((EFI_D_INFO, "Allocating PCI space from 0x%X to 0x%X\n", (UINT32) dBMBOUND, (UINT32) (dBMBOUND + Length - 1)));
+ Status = gDS->AddMemorySpace (
+ EfiGcdMemoryTypeMemoryMappedIo,
+ dBMBOUND,
+ Length,
+ 0
+ );
+
+ DEBUG ((EFI_D_INFO, " Allocating ACPI MMIO space from 0x%X to 0x%X\n", ACPI_MMIO_BASE_ADDRESS, ACPI_MMIO_BASE_ADDRESS + ACPI_MMIO_SIZE - 1));
+ Status = gDS->AddMemorySpace (
+ EfiGcdMemoryTypeMemoryMappedIo,
+ ACPI_MMIO_BASE_ADDRESS,
+ ACPI_MMIO_SIZE,
+ 0
+ );
+ }
+
+ //
+ // Reserve 0xE0000000 ~ 0xE4000000 as Pcie MMIO range
+ //
+ DEBUG ((EFI_D_INFO, "Allocating PCIe MMIO space from 0x%X to 0x%X\n", PCIE_MMIO_BASE_ADDRESS, PCIE_MMIO_BASE_ADDRESS + PCIE_MMIO_SIZE - 1));
+ Status = gDS->AddMemorySpace (
+ EfiGcdMemoryTypeMemoryMappedIo,
+ PCIE_MMIO_BASE_ADDRESS,
+ PCIE_MMIO_SIZE,
+ 0
+ );
+
+ BaseAddress = (EFI_PHYSICAL_ADDRESS) PCIE_MMIO_BASE_ADDRESS;
+ Length = PCIE_MMIO_SIZE;
+ Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &PciMemorySpaceDescriptor);
+ ASSERT_EFI_ERROR (Status);
+
+ Attributes = PciMemorySpaceDescriptor.Attributes | EFI_MEMORY_RUNTIME;
+
+ Status = gDS->SetMemorySpaceAttributes (
+ BaseAddress,
+ Length,
+ Attributes
+ );
+ ASSERT_EFI_ERROR (Status);
+ DEBUG ((EFI_D_INFO, "Successfully changed memory attribute for PCIe\n"));
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Enter a certain phase of the PCI enumeration process.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL instance.
+ @param[in] Phase The phase during enumeration.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER Wrong phase parameter passed in.
+ @retval EFI_NOT_READY Resources have not been submitted yet.
+
+**/
+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;
+ UINT64 Alignment;
+ 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;
+ return EFI_SUCCESS;
+ break;
+
+ case EfiPciHostBridgeEndBusAllocation:
+ //
+ // No specific action is required here, can perform any chipset specific programing
+ //
+ return EFI_SUCCESS;
+ break;
+
+ case EfiPciHostBridgeBeginResourceAllocation:
+ //
+ // No specific action is required here, can perform any chipset specific programing
+ //
+ return EFI_SUCCESS;
+ 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;
+ Alignment = RootBridgeInstance->ResAllocNode[Index].Alignment;
+
+ //
+ // Get the number of '1' in Alignment.
+ //
+ for (BitsOfAlignment = 0; Alignment != 0; BitsOfAlignment++) {
+ Alignment = RShiftU64 (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;
+ }
+ //
+ // Reset
+ //
+ gRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);
+
+ }
+ break;
+
+ case TypePMem32:
+ case TypeMem64:
+ case TypePMem64:
+ ReturnStatus = EFI_ABORTED;
+ break;
+ default:
+ break;
+
+ } // end switch
+ } // end if
+ } //end while
+
+ List = List->ForwardLink;
+ } //end if
+
+ 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:
+ break;
+ } //end switch
+ RootBridgeInstance->ResAllocNode[Index].Type = Index;
+ RootBridgeInstance->ResAllocNode[Index].Base = 0;
+ RootBridgeInstance->ResAllocNode[Index].Length = 0;
+ RootBridgeInstance->ResAllocNode[Index].Status = ResNone;
+ } //end if
+ } //end for
+
+ List = List->ForwardLink;
+ }
+
+ HostBridgeInstance->ResourceSubmited = FALSE;
+ HostBridgeInstance->CanRestarted = TRUE;
+ return ReturnStatus;
+ break;
+
+ case EfiPciHostBridgeEndResourceAllocation:
+ HostBridgeInstance->CanRestarted = FALSE;
+
+ break;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ } //end switch
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Return the device handle of the next PCI root bridge that is associated with
+ this Host Bridge.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
+ @param[in,out] RootBridgeHandle Returns the device handle of the next PCI Root Bridge.
+ On input, it holds the RootBridgeHandle returned by the most
+ recent call to GetNextRootBridge().The handle for the first
+ PCI Root Bridge is returned if RootBridgeHandle is NULL on input.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_NOT_FOUND Next PCI root bridge not found.
+ @retval EFI_INVALID_PARAMETER Wrong parameter passed in.
+
+**/
+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 attributes of a PCI Root Bridge.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
+ @param[in] RootBridgeHandle The device handle of the PCI Root Bridge
+ that the caller is interested in
+ @param[out] Attributes The pointer to attributes of the PCI Root Bridge
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER Attributes parameter passed in is NULL or
+ RootBridgeHandle is not an EFI_HANDLE
+ that was returned on a previous call to
+ GetNextRootBridge().
+
+**/
+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;
+}
+
+
+/**
+ This is the request from the PCI enumerator to set up
+ the specified PCI Root Bridge for bus enumeration process.
+
+ @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_SUCCESS Succeed.
+ @retval EFI_OUT_OF_RESOURCES Not enough pool to be allocated.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
+
+**/
+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) {
+ 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;
+}
+
+
+/**
+ This function programs the PCI Root Bridge hardware so that
+ it decodes the specified PCI bus range.
+
+ @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_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER Wrong parameters passed in.
+
+**/
+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) {
+ BusStart = (UINTN) ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Ptr)->AddrRangeMin;
+ BusLen = (UINTN) ((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Ptr)->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
+
+ @param[in] This 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 Succeed.
+ @retval EFI_INVALID_PARAMETER Wrong parameters passed in.
+
+**/
+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 != (Power2MaxMemory (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;
+ } //end switch
+
+ Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
+ } //end while
+
+ return EFI_SUCCESS;
+ } //end if
+
+ List = List->ForwardLink;
+ } //end while
+
+ return EFI_INVALID_PARAMETER;
+}
+
+
+/**
+ This function returns the proposed resource settings for the specified
+ PCI Root Bridge.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
+ @param[in] RootBridgeHandle The PCI Root Bridge handle.
+ @param[out] Configuration The pointer to the pointer to the PCI I/O.
+ and memory resource descriptor.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_OUT_OF_RESOURCES Not enough pool to be allocated.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
+
+**/
+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) {
+ Buffer = AllocateZeroPool (Number * sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) + sizeof (EFI_ACPI_END_TAG_DESCRIPTOR));
+ if (!Buffer) {
+ return EFI_OUT_OF_RESOURCES;
+ }
+ } else {
+ return EFI_NOT_FOUND;
+ }
+
+ 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;
+ } //end switch
+
+ 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;
+}
+
+
+/**
+ This function is called for all the PCI controllers that the PCI
+ bus driver finds. Can be used to Preprogram the controller.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
+ @param[in] RootBridgeHandle The PCI Root Bridge handle
+ @param[in] PciAddress Address of the controller on the PCI bus
+ @param[in] Phase The Phase during resource allocation
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
+
+**/
+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) {
+ return EFI_SUCCESS;
+ }
+
+ List = List->ForwardLink;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+
+/**
+ Calculate max memory of power 2.
+
+ @param[in] MemoryLength Input memory length.
+
+ @retval Returned Maximum length.
+
+**/
+UINT64
+Power2MaxMemory (
+ IN UINT64 MemoryLength
+ )
+{
+ UINT64 Result;
+
+ if (RShiftU64 (MemoryLength, 32)) {
+ Result = LShiftU64 ((UINT64) GetPowerOfTwo64 (RShiftU64 (MemoryLength, 32)), 32);
+ } else {
+ Result = (UINT64) GetPowerOfTwo64 (MemoryLength);
+ }
+
+ return Result;
+}
+
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.h b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.h new file mode 100644 index 0000000000..bace944d4e --- /dev/null +++ b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.h @@ -0,0 +1,231 @@ +/** @file
+ The Header file of the Pci Host Bridge Driver.
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _PCI_HOST_BRIDGE_H_
+#define _PCI_HOST_BRIDGE_H_
+
+//
+// Disable the warning since LIST_ENTRY was defined in EDKII
+// and EFI_LIST_ENTRY was defined in PCI_HOST_BRIDGE_INSTANCE
+//
+#ifndef __GNUC__
+#pragma warning(disable: 4133)
+#endif
+
+//
+// Hard code the host bridge number in the platform.
+// In this chipset, there is only one host bridge.
+//
+#define HOST_BRIDGE_NUMBER 1
+
+#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
+//
+/**
+ Enter a certain phase of the PCI enumeration process.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL instance
+ @param[in] Phase The phase during enumeration.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER Wrong phase parameter passed in.
+ @retval EFI_NOT_READY Resources have not been submitted yet.
+
+**/
+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.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
+ @param[in,out] RootBridgeHandle Returns the device handle of the next PCI Root Bridge.
+ On input, it holds the RootBridgeHandle returned by the most
+ recent call to GetNextRootBridge().The handle for the first
+ PCI Root Bridge is returned if RootBridgeHandle is NULL on input.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_NOT_FOUND Next PCI root bridge not found.
+ @retval EFI_INVALID_PARAMETER Wrong parameter passed in.
+
+**/
+EFI_STATUS
+EFIAPI
+GetNextRootBridge (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN OUT EFI_HANDLE *RootBridgeHandle
+ );
+
+/**
+ Returns the attributes of a PCI Root Bridge.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
+ @param[in] RootBridgeHandle The device handle of the PCI Root Bridge.
+ that the caller is interested in
+ @param[out] Attributes The pointer to attributes of the PCI Root Bridge.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER Attributes parameter passed in is NULL or
+ RootBridgeHandle is not an EFI_HANDLE
+ that was returned on a previous call to
+ GetNextRootBridge().
+
+**/
+EFI_STATUS
+EFIAPI
+GetAttributes (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT UINT64 *Attributes
+ );
+
+/**
+ This is the request from the PCI enumerator to set up
+ the specified PCI Root Bridge for bus enumeration process.
+
+ @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_SUCCESS Succeed.
+ @retval EFI_OUT_OF_RESOURCES Not enough pool to be allocated.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
+
+**/
+EFI_STATUS
+EFIAPI
+StartBusEnumeration (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT VOID **Configuration
+ );
+
+/**
+ This function programs the PCI Root Bridge hardware so that
+ it decodes the specified PCI bus range.
+
+ @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_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER Wrong parameters passed in.
+
+**/
+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.
+
+ @param[in] This 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 Succeed.
+ @retval EFI_INVALID_PARAMETER Wrong parameters passed in.
+
+**/
+EFI_STATUS
+EFIAPI
+SubmitResources (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ IN VOID *Configuration
+ );
+
+/**
+ This function returns the proposed resource settings for the specified.
+ PCI Root Bridge.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
+ @param[in] RootBridgeHandle The PCI Root Bridge handle.
+ @param[out] Configuration The pointer to the pointer to the PCI I/O.
+ and memory resource descriptor.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_OUT_OF_RESOURCES Not enough pool to be allocated.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
+
+**/
+EFI_STATUS
+EFIAPI
+GetProposedResources (
+ IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
+ IN EFI_HANDLE RootBridgeHandle,
+ OUT VOID **Configuration
+ );
+
+/**
+ This function is called for all the PCI controllers that the PCI
+ bus driver finds. Can be used to Preprogram the controller.
+
+ @param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
+ @param[in] RootBridgeHandle The PCI Root Bridge handle.
+ @param[in] PciAddress Address of the controller on the PCI bus.
+ @param[in] Phase The Phase during resource allocation.
+
+ @retval EFI_SUCCESS Succeed.
+ @retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
+
+**/
+EFI_STATUS
+EFIAPI
+PreprocessController (
+ IN struct _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
+ );
+
+/**
+ Calculate max memory of power 2.
+
+ @param[in] MemoryLength Input memory length.
+
+ @retval Returned Maximum length.
+
+**/
+UINT64
+Power2MaxMemory (
+ IN UINT64 MemoryLength
+ );
+
+#endif
+
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.inf b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.inf new file mode 100644 index 0000000000..de77fd1552 --- /dev/null +++ b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciHostBridge.inf @@ -0,0 +1,61 @@ +## @file
+# PciHostBridge module.
+#
+# Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php.
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = PciHostBridge
+ FILE_GUID = D34E68E9-B9BF-4924-8A06-0EA2672204DD
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+ ENTRY_POINT = PciHostBridgeEntryPoint
+
+#
+# The following information is for reference only and not required by the build tools.
+#
+# VALID_ARCHITECTURES = IA32 X64 IPF EBC
+#
+
+[Sources]
+ PciHostBridge.h
+ PciHostBridge.c
+ PciRootBridge.h
+ PciRootBridgeIo.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ BroxtonSiPkg/BroxtonSiPkg.dec
+
+[LibraryClasses]
+ UefiDriverEntryPoint
+ UefiBootServicesTableLib
+ DebugLib
+ S3BootScriptLib
+ DxeServicesTableLib
+ IoLib
+ SideBandLib
+ SteppingLib
+
+[Pcd]
+ gEfiMdePkgTokenSpaceGuid.PcdPciExpressBaseAddress ## SOMETIMES_CONSUMES
+
+[Protocols]
+ gEfiPciRootBridgeIoProtocolGuid ## PRODUCES
+ gEfiPciHostBridgeResourceAllocationProtocolGuid ## PRODUCES
+ gEfiMetronomeArchProtocolGuid ## CONSUMES
+ gEfiCpuIo2ProtocolGuid ## CONSUMES
+
+[Depex]
+ gEfiCpuIo2ProtocolGuid AND
+ gEfiMetronomeArchProtocolGuid
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciRootBridge.h b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciRootBridge.h new file mode 100644 index 0000000000..81c143e6d1 --- /dev/null +++ b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciRootBridge.h @@ -0,0 +1,155 @@ +/** @file
+ The driver for the host to pci bridge (root bridge).
+
+ Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _PCI_ROOT_BRIDGE_H_
+#define _PCI_ROOT_BRIDGE_H_
+
+#include <PiDxe.h>
+#include <IndustryStandard/Acpi.h>
+#include <Library/S3BootScriptLib.h>
+#include "SaAccess.h"
+#include <Protocol/PciHostBridgeResourceAllocation.h>
+#include <Protocol/Metronome.h>
+#include <Protocol/CpuIo.h>
+#include <Library/UefiLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/DebugLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DxeServicesTableLib.h>
+#include <Library/UefiRuntimeServicesTableLib.h>
+#include <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+
+//
+// Define resource status constant
+//
+#define EFI_RESOURCE_NONEXISTENT 0xFFFFFFFFFFFFFFFF
+#define EFI_RESOURCE_LESS 0xFFFFFFFFFFFFFFFE
+
+
+//
+// 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_APPETURE;
+
+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_LOCK PciLock;
+ UINTN PciAddress;
+ UINTN PciData;
+ 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[in] Protocol Point to protocol instance.
+ @param[in] HostBridgeHandle Handle of host bridge.
+ @param[in] Attri Attribute of host bridge.
+ @param[in] 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_APPETURE *ResAppeture
+ );
+
+#endif
+
diff --git a/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciRootBridgeIo.c b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciRootBridgeIo.c new file mode 100644 index 0000000000..e5e2e8605f --- /dev/null +++ b/Silicon/BroxtonSoC/BroxtonSiPkg/NorthCluster/PciHostBridge/Dxe/PciRootBridgeIo.c @@ -0,0 +1,1563 @@ +/** @file
+ EFI Memory Controller PCI Root Bridge Io Protocol.
+
+ Copyright (c) 1999 - 2016, Intel Corporation. All rights reserved.<BR>
+
+ This program and the accompanying materials
+ are licensed and made available under the terms and conditions of the BSD License
+ which accompanies this distribution. The full text of the license may be found at
+ http://opensource.org/licenses/bsd-license.php.
+
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include "PciRootBridge.h"
+#include <IndustryStandard/Pci22.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
+//
+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
+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
+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,
+ IN OUT VOID *Buffer
+ );
+
+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 OUT VOID *Buffer
+ );
+
+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,
+ IN OUT VOID *UserBuffer
+ );
+
+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 OUT VOID *UserBuffer
+ );
+
+EFI_STATUS
+EFIAPI
+RootBridgeIoCopyMem (
+ IN struct _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
+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,
+ IN OUT VOID *Buffer
+ );
+
+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 OUT VOID *Buffer
+ );
+
+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
+EFIAPI
+RootBridgeIoUnmap (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ );
+
+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
+EFIAPI
+RootBridgeIoFreeBuffer (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ OUT VOID *HostAddress
+ );
+
+EFI_STATUS
+EFIAPI
+RootBridgeIoFlush (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This
+ );
+
+EFI_STATUS
+EFIAPI
+RootBridgeIoGetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT UINT64 *Supported,
+ OUT UINT64 *Attributes
+ );
+
+EFI_STATUS
+EFIAPI
+RootBridgeIoSetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINT64 Attributes,
+ IN OUT UINT64 *ResourceBase,
+ IN OUT UINT64 *ResourceLength
+ );
+
+EFI_STATUS
+EFIAPI
+RootBridgeIoConfiguration (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT VOID **Resources
+ );
+
+//
+// Sub Function Prototypes
+//
+typedef union {
+ UINT8 volatile *buf;
+ UINT8 volatile *ui8;
+ UINT16 volatile *ui16;
+ UINT32 volatile *ui32;
+ UINT64 volatile *ui64;
+ UINTN volatile ui;
+} PTR;
+
+STATIC
+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 UserAddress,
+ IN UINTN Count,
+ IN OUT VOID *UserBuffer
+ );
+
+//
+// Memory Controller Pci Root Bridge Io Module Variables
+//
+EFI_METRONOME_ARCH_PROTOCOL *mMetronome;
+EFI_CPU_IO2_PROTOCOL *mCpuIo;
+
+/**
+ Construct the Pci Root Bridge Io protocol.
+
+ @param[in] Protocol Point to protocol instance.
+ @param[in] HostBridgeHandle Handle of host bridge.
+ @param[in] Attri Attribute of host bridge.
+ @param[in] 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_APPETURE *ResAppeture
+ )
+{
+ 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 = ResAppeture->MemBase;
+ PrivateData->IoBase = ResAppeture->IoBase;
+
+ //
+ // The host bridge only supports 32bit addressing for memory
+ // and standard IA32 16bit io
+ //
+ PrivateData->MemLimit = ResAppeture->MemLimit;
+ PrivateData->IoLimit = ResAppeture->IoLimit;
+
+ //
+ // Bus Aperture for this Root Bridge (Possible Range)
+ //
+ PrivateData->BusBase = ResAppeture->BusBase;
+ PrivateData->BusLimit = ResAppeture->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;
+ }
+
+ EfiInitializeLock (&PrivateData->PciLock, TPL_HIGH_LEVEL);
+ PrivateData->PciAddress = 0xCF8;
+ PrivateData->PciData = 0xCFC;
+ PrivateData->RootBridgeAttrib = Attri;
+ PrivateData->Attributes = 0;
+
+ PrivateData->Supports = EFI_PCI_ATTRIBUTE_IDE_PRIMARY_IO |
+ EFI_PCI_ATTRIBUTE_ISA_IO |
+ EFI_PCI_ATTRIBUTE_VGA_PALETTE_IO |
+ EFI_PCI_ATTRIBUTE_VGA_MEMORY |
+ EFI_PCI_ATTRIBUTE_VGA_IO;
+
+ 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);
+
+ Status = gBS->LocateProtocol (&gEfiCpuIo2ProtocolGuid, NULL, (VOID **) &mCpuIo);
+ ASSERT_EFI_ERROR (Status);
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Polls an address in memory mapped I/O space until an exit condition is met, or
+ a timeout occurs.
+
+ @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 or Result is NULL.
+ @retval EFI_TIMEOUT Delay expired before a match occurred.
+
+**/
+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;
+ UINTN Remainder;
+
+ if (Result == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || 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, (UINT32 *) &Remainder);
+ if (Remainder != 0) {
+ NumberOfTicks += 1;
+ }
+
+ NumberOfTicks += 1;
+
+ while (NumberOfTicks) {
+ 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.
+
+ @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 or Result is NULL.
+ @retval EFI_TIMEOUT Delay expired before a match occurred.
+
+**/
+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;
+ UINTN Remainder;
+
+ //
+ // No matter what, always do a single poll.
+ //
+ if (Result == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || 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, (UINT32 *) &Remainder);
+ if (Remainder != 0) {
+ NumberOfTicks += 1;
+ }
+
+ NumberOfTicks += 1;
+
+ while (NumberOfTicks) {
+ 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.
+
+ @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, 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 or Buffer is NULL.
+
+**/
+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,
+ IN OUT VOID *Buffer
+ )
+{
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
+ UINTN OldCount;
+
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ //
+ // Check memory access limit
+ //
+ if (Address < PrivateData->MemBase) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OldWidth = Width;
+ OldCount = Count;
+ if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
+ Count = 1;
+ }
+
+ Width &= 0x03;
+ if (Address + MultU64x32 (LShiftU64 (1, Width), (UINT32) Count) - 1 > PrivateData->MemLimit) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return mCpuIo->Mem.Read (
+ mCpuIo,
+ (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
+ Address,
+ OldCount,
+ Buffer
+ );
+}
+
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
+
+ @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, 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 or Buffer is NULL.
+
+**/
+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 OUT VOID *Buffer
+ )
+{
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
+ UINTN OldCount;
+
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ //
+ // Check memory access limit
+ //
+ if (Address < PrivateData->MemBase) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OldWidth = Width;
+ OldCount = Count;
+ if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
+ Count = 1;
+ }
+
+ Width &= 0x03;
+ if (Address + MultU64x32 (LShiftU64 (1, Width), (UINT32) Count) - 1 > PrivateData->MemLimit) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return mCpuIo->Mem.Write (
+ mCpuIo,
+ (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
+ Address,
+ OldCount,
+ 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[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 or Buffer is NULL.
+
+**/
+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,
+ IN OUT VOID *Buffer
+ )
+{
+ UINTN AlignMask;
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
+ UINTN OldCount;
+
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ //
+ // AlignMask = (1 << Width) - 1;
+ //
+ AlignMask = (1 << (Width & 0x03)) - 1;
+
+ //
+ // Check Io access limit
+ //
+ if (Address < PrivateData->IoBase) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OldWidth = Width;
+ OldCount = Count;
+ if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
+ Count = 1;
+ }
+
+ Width &= 0x03;
+ if (Address + MultU64x32 (LShiftU64 (1, Width), (UINT32) Count) - 1 >= PrivateData->IoLimit) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Address & AlignMask) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return mCpuIo->Io.Read (
+ mCpuIo,
+ (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
+ Address,
+ OldCount,
+ 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[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 or Buffer is NULL.
+
+**/
+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 OUT VOID *Buffer
+ )
+{
+ UINTN AlignMask;
+ PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH OldWidth;
+ UINTN OldCount;
+
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ PrivateData = DRIVER_INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ //
+ // AlignMask = (1 << Width) - 1;
+ //
+ AlignMask = (1 << (Width & 0x03)) - 1;
+
+ //
+ // Check Io access limit
+ //
+ if (Address < PrivateData->IoBase) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ OldWidth = Width;
+ OldCount = Count;
+ if (Width >= EfiPciWidthFifoUint8 && Width <= EfiPciWidthFifoUint64) {
+ Count = 1;
+ }
+
+ Width &= 0x03;
+ if (Address + MultU64x32 (LShiftU64 (1, Width), (UINT32) Count) - 1 >= PrivateData->IoLimit) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Address & AlignMask) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return mCpuIo->Io.Write (
+ mCpuIo,
+ (EFI_CPU_IO_PROTOCOL_WIDTH) OldWidth,
+ Address,
+ OldCount,
+ Buffer
+ );
+
+}
+
+
+/**
+ Enables a PCI driver to copy one region of PCI root bridge memory space to another region of PCI
+ root bridge memory space.
+
+ @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.
+
+**/
+EFI_STATUS
+EFIAPI
+RootBridgeIoCopyMem (
+ IN struct _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 (Width < 0 || Width > EfiPciWidthUint64) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (DestAddress == SrcAddress) {
+ return EFI_SUCCESS;
+ }
+
+ Stride = (UINTN) (LShiftU64 (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.
+
+ @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, 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 or Buffer is NULL.
+
+**/
+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,
+ IN OUT VOID *Buffer
+ )
+{
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Read Pci configuration space
+ //
+ 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.
+
+ @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, 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 or Buffer is NULL.
+
+**/
+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 OUT VOID *Buffer
+ )
+{
+ if (Buffer == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ if (Width < 0 || Width >= EfiPciWidthMaximum) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ //
+ // Write Pci configuration space
+ //
+ return RootBridgeIoPciRW (This, TRUE, Width, Address, Count, Buffer);
+}
+
+
+/**
+ Provides the PCI controller-specific addresses required to access system memory from a
+ DMA bus master.
+
+ @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 or NumberOfBytes or DeviceAddress or Mapping is NULL.
+ @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
+
+**/
+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_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 (Operation < 0 || 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) > 0x100000000) {
+ //
+ // 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.
+ //
+ MapInfo = AllocatePool (sizeof (MAP_INFO));
+ if (!MapInfo) {
+ *NumberOfBytes = 0;
+ return EFI_OUT_OF_RESOURCES;
+ }
+ //
+ // 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.
+ //
+ MapInfo->MappedHostAddress = (EFI_PHYSICAL_ADDRESS) (UINTN) AllocatePages (MapInfo->NumberOfPages);
+ if (!(MapInfo->MappedHostAddress)) {
+ FreePool (MapInfo);
+ *NumberOfBytes = 0;
+ return EFI_OUT_OF_RESOURCES;
+ }
+ //
+ // 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.
+
+ @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().
+
+**/
+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.
+ //
+#ifndef __GNUC__
+#pragma warning (disable: 4305)
+#endif
+ FreePages ((VOID *) (UINTN) MapInfo->MappedHostAddress, MapInfo->NumberOfPages);
+#ifndef __GNUC__
+#pragma warning (default: 4305)
+#endif
+ FreePool (Mapping);
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Allocates pages that are suitable for an EfiPciOperationBusMasterCommonBuffer or
+ EfiPciOperationBusMasterCommonBuffer64 mapping.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Type This parameter is not used and must be ignored.
+ @param[in] MemoryType The type of memory to allocate, EfiBootServicesData or EfiRuntimeServicesData.
+ @param[in] Pages The number of pages to allocate.
+ @param[out] HostAddress A pointer to store the base system memory address of the allocated range.
+ @param[in] 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 or HostAddress is NULL.
+ @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
+ MEMORY_WRITE_COMBINE, MEMORY_CACHED, and DUAL_ADDRESS_CYCLE.
+
+**/
+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_PHYSICAL_ADDRESS PhysicalAddress;
+ EFI_STATUS Status;
+
+ //
+ // Validate Attributes
+ //
+ if (Attributes & EFI_PCI_ATTRIBUTE_INVALID_FOR_ALLOCATE_BUFFER) {
+ 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[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[in] Pages The number of pages to free.
+ @param[out] 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
+ )
+{
+ FreePages ((VOID *) HostAddress, Pages);
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Flushes all PCI posted write transactions from a PCI host bridge to system memory.
+
+ @param[in] 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.
+
+**/
+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.
+
+ @param[in] This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param[out] Supported A pointer to the mask of attributes that this PCI root bridge
+ supports setting with SetAttributes().
+ @param[out] 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) {
+ *Supported = PrivateData->Supports;
+ }
+
+ if (Attributes) {
+ *Attributes = PrivateData->Attributes;
+ }
+
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Sets attributes for a resource range on a PCI root bridge.
+
+ @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.
+
+**/
+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) {
+ if ((Attributes & (~(PrivateData->Supports))) != 0) {
+ return EFI_UNSUPPORTED;
+ }
+ }
+
+ if (Attributes == PrivateData->Attributes) {
+ return EFI_SUCCESS;
+ }
+ //
+ // It is just a trick for some attribute can only be enabled or disabled
+ // otherwise it can impact on other devices
+ //
+ PrivateData->Attributes = Attributes;
+
+ 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.
+
+ @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.
+
+**/
+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) {
+ Configuration.SpaceDesp[Index].AddrRangeMin = PrivateData->ResAllocNode[Index].Base;
+ Configuration.SpaceDesp[Index].AddrRangeMax = PrivateData->ResAllocNode[Index].Base +
+ PrivateData->ResAllocNode[Index].Length -
+ 1;
+ Configuration.SpaceDesp[Index].AddrLen = PrivateData->ResAllocNode[Index].Length;
+ }
+ }
+ *Resources = &Configuration;
+
+ 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 or Buffer is NULL.
+
+**/
+STATIC
+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 UserAddress,
+ IN UINTN Count,
+ IN OUT VOID *UserBuffer
+ )
+{
+ UINT32 InStride;
+ UINT32 OutStride;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *PciRbAddr;
+ UINT8 *PcieRegAddr;
+
+ if ((Width & 0x03) >= EfiPciWidthUint64) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ InStride = 1 << (Width & 0x03);
+ OutStride = InStride;
+ if (Width >= (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) EfiCpuIoWidthFifoUint8 && Width <= (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) EfiCpuIoWidthFifoUint64) {
+ InStride = 0;
+ }
+
+ if (Width >= (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) EfiCpuIoWidthFillUint8 && Width <= (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) EfiCpuIoWidthFillUint64) {
+ OutStride = 0;
+ }
+
+ PciRbAddr = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS *) &UserAddress;
+
+ PcieRegAddr = (UINT8 *) MmPciAddress (
+ 0, // No segment support
+ PciRbAddr->Bus,
+ PciRbAddr->Device,
+ PciRbAddr->Function,
+ 0 // Register is added next
+ );
+
+ //
+ // Add the register offset to the address
+ //
+ if (PciRbAddr->ExtendedRegister != 0) {
+ PcieRegAddr += PciRbAddr->ExtendedRegister;
+ } else {
+ PcieRegAddr += PciRbAddr->Register;
+ }
+
+ while (Count) {
+ if (Write) {
+ This->Mem.Write (This, Width, (UINTN) PcieRegAddr, 1, UserBuffer);
+ } else {
+ This->Mem.Read (This, Width, (UINTN) PcieRegAddr, 1, UserBuffer);
+ }
+
+ UserBuffer = ((UINT8 *) UserBuffer) + OutStride;
+ PcieRegAddr += InStride;
+ Count -= 1;
+ }
+
+ return EFI_SUCCESS;
+}
+
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