diff options
| author | Shivamurthy Shastri <shivamurthy.shastri@linaro.org> | 2015-11-20 10:44:56 +0530 |
|---|---|---|
| committer | Shivamurthy Shastri <shivamurthy.shastri@linaro.org> | 2015-11-20 10:44:56 +0530 |
| commit | f832606ad54fd0d3f7057c1609487be29497cd69 (patch) | |
| tree | fd98d6f3e4f7baad855e9c5a9e9a57ac1b0cd4a9 | |
| parent | beb168f04de13acfa6e46fab8299ccb8fdd60ec1 (diff) | |
PCI Emulation code used for DWC2 driver
This is used just get Device Path for USB contrller
and will be removed later.
Signed-off-by: Shivamurthy Shastri <shivamurthy.shastri@linaro.org>
| -rw-r--r-- | HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.c | 626 | ||||
| -rw-r--r-- | HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.h | 287 | ||||
| -rw-r--r-- | HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.inf | 53 | ||||
| -rw-r--r-- | HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciRootBridgeIo.c | 306 |
4 files changed, 1272 insertions, 0 deletions
diff --git a/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.c b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.c new file mode 100644 index 000000000..2cd02a2aa --- /dev/null +++ b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.c @@ -0,0 +1,626 @@ +/** @file
+
+ Copyright (c) 2008 - 2009, Apple Inc. 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 "PciEmulation.h"
+
+EMBEDDED_EXTERNAL_DEVICE *gTPS65950;
+
+#define HOST_CONTROLLER_OPERATION_REG_SIZE 0x44
+
+typedef struct {
+ ACPI_HID_DEVICE_PATH AcpiDevicePath;
+ PCI_DEVICE_PATH PciDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
+} EFI_PCI_IO_DEVICE_PATH;
+
+typedef struct {
+ UINT32 Signature;
+ EFI_PCI_IO_DEVICE_PATH DevicePath;
+ EFI_PCI_IO_PROTOCOL PciIoProtocol;
+ PCI_TYPE00 *ConfigSpace;
+ PCI_ROOT_BRIDGE RootBridge;
+ UINTN Segment;
+} EFI_PCI_IO_PRIVATE_DATA;
+
+#define EFI_PCI_IO_PRIVATE_DATA_SIGNATURE SIGNATURE_32('p', 'c', 'i', 'o')
+#define EFI_PCI_IO_PRIVATE_DATA_FROM_THIS(a) CR(a, EFI_PCI_IO_PRIVATE_DATA, PciIoProtocol, EFI_PCI_IO_PRIVATE_DATA_SIGNATURE)
+
+EFI_PCI_IO_DEVICE_PATH PciIoDevicePathTemplate =
+{
+ {
+ { ACPI_DEVICE_PATH, ACPI_DP, { sizeof (ACPI_HID_DEVICE_PATH), 0 } },
+ EISA_PNP_ID(0x0A03), // HID
+ 0 // UID
+ },
+ {
+ { HARDWARE_DEVICE_PATH, HW_PCI_DP, { sizeof (PCI_DEVICE_PATH), 0 } },
+ 0,
+ 0
+ },
+ { END_DEVICE_PATH_TYPE, END_ENTIRE_DEVICE_PATH_SUBTYPE, { sizeof (EFI_DEVICE_PATH_PROTOCOL), 0} }
+};
+
+STATIC
+VOID
+ConfigureUSBHost (
+ VOID
+ )
+{
+ UINT32 Data;
+
+ /*Enable USB clock*/
+ Data = MmioRead32 (0xF7030000 + 0x200);
+ Data |= 0x10;
+ MmioWrite32 (0xF7030000 + 0x200, 0x10);
+
+ do {
+ Data = MmioRead32 (0xF7030000 + 0x208);
+ } while ((Data & 0x10) == 0);
+
+ /*Take USB IPs out of reset*/
+ MmioWrite32 (0xF7030000 + 0x304, 0xF0);
+
+ do {
+ Data = MmioRead32 (0xF7030000 + 0x308);
+ Data &= 0xF0;
+ } while (Data);
+
+ /*CTRL5*/
+ Data = MmioRead32 (0xF7030000 + 0x010);
+ Data &= ~0x20;
+ Data |= 0x318;
+ MmioWrite32 (0xF7030000 + 0x010, Data);
+
+ /*CTRL4*/
+ /*Configure USB PHY*/
+ Data = MmioRead32 (0xF7030000 + 0x00C);
+
+ /*make PHY out of low power mode*/
+ Data &= ~0x40;
+ Data &= ~0x100;
+ Data |= 0xC00;
+ MmioWrite32 (0xF7030000 + 0x00C, Data);
+
+ MmioWrite32 (0xF7030000 + 0x018, 0x70533483); //EYE_PATTERN
+
+ MicroSecondDelay (5000);
+}
+
+EFI_STATUS
+PciIoPollMem (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 BarIndex,
+ IN UINT64 Offset,
+ IN UINT64 Mask,
+ IN UINT64 Value,
+ IN UINT64 Delay,
+ OUT UINT64 *Result
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+PciIoPollIo (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 BarIndex,
+ IN UINT64 Offset,
+ IN UINT64 Mask,
+ IN UINT64 Value,
+ IN UINT64 Delay,
+ OUT UINT64 *Result
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+PciIoMemRead (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 BarIndex,
+ IN UINT64 Offset,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_PCI_IO_PRIVATE_DATA *Private = EFI_PCI_IO_PRIVATE_DATA_FROM_THIS(This);
+
+ return PciRootBridgeIoMemRead (&Private->RootBridge.Io,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Private->ConfigSpace->Device.Bar[BarIndex] + Offset,
+ Count,
+ Buffer
+ );
+}
+
+EFI_STATUS
+PciIoMemWrite (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 BarIndex,
+ IN UINT64 Offset,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_PCI_IO_PRIVATE_DATA *Private = EFI_PCI_IO_PRIVATE_DATA_FROM_THIS(This);
+
+ return PciRootBridgeIoMemWrite (&Private->RootBridge.Io,
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Private->ConfigSpace->Device.Bar[BarIndex] + Offset,
+ Count,
+ Buffer
+ );
+}
+
+EFI_STATUS
+PciIoIoRead (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 BarIndex,
+ IN UINT64 Offset,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+PciIoIoWrite (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 BarIndex,
+ IN UINT64 Offset,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+/**
+ Enable a PCI driver to read PCI controller registers in PCI configuration space.
+
+ @param[in] This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Offset The offset 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 Offset.
+
+ @param[in out] Buffer The destination buffer to store the results.
+
+ @retval EFI_SUCCESS The data was read from the PCI controller.
+ @retval EFI_INVALID_PARAMETER "Width" is invalid.
+ @retval EFI_INVALID_PARAMETER "Buffer" is NULL.
+
+**/
+EFI_STATUS
+PciIoPciRead (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT32 Offset,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_PCI_IO_PRIVATE_DATA *Private = EFI_PCI_IO_PRIVATE_DATA_FROM_THIS (This);
+ EFI_STATUS Status;
+
+ if ((Width < 0) || (Width >= EfiPciIoWidthMaximum) || (Buffer == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Status = PciRootBridgeIoMemRW (
+ (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH)Width,
+ Count,
+ TRUE,
+ (PTR)(UINTN)Buffer,
+ TRUE,
+ (PTR)(UINTN)(((UINT8 *)Private->ConfigSpace) + Offset) //Fix me ConfigSpace
+ );
+
+ return Status;
+}
+
+/**
+ Enable a PCI driver to write PCI controller registers in PCI configuration space.
+
+ @param[in] This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param[in] Width Signifies the width of the memory operations.
+ @param[in] Offset The offset 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 Offset.
+
+ @param[in out] Buffer The source buffer to write data from.
+
+ @retval EFI_SUCCESS The data was read from the PCI controller.
+ @retval EFI_INVALID_PARAMETER "Width" is invalid.
+ @retval EFI_INVALID_PARAMETER "Buffer" is NULL.
+
+**/
+EFI_STATUS
+PciIoPciWrite (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT32 Offset,
+ IN UINTN Count,
+ IN OUT VOID *Buffer
+ )
+{
+ EFI_PCI_IO_PRIVATE_DATA *Private = EFI_PCI_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if ((Width < 0) || (Width >= EfiPciIoWidthMaximum) || (Buffer == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return PciRootBridgeIoMemRW ((EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
+ Count,
+ TRUE,
+ (PTR)(UINTN)(((UINT8 *)Private->ConfigSpace) + Offset),
+ TRUE,
+ (PTR)(UINTN)Buffer
+ );
+}
+
+EFI_STATUS
+PciIoCopyMem (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
+ IN UINT8 DestBarIndex,
+ IN UINT64 DestOffset,
+ IN UINT8 SrcBarIndex,
+ IN UINT64 SrcOffset,
+ IN UINTN Count
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+PciIoMap (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_OPERATION Operation,
+ IN VOID *HostAddress,
+ IN OUT UINTN *NumberOfBytes,
+ OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
+ OUT VOID **Mapping
+ )
+{
+ DMA_MAP_OPERATION DmaOperation;
+
+ if (Operation == EfiPciIoOperationBusMasterRead) {
+ DmaOperation = MapOperationBusMasterRead;
+ } else if (Operation == EfiPciIoOperationBusMasterWrite) {
+ DmaOperation = MapOperationBusMasterWrite;
+ } else if (Operation == EfiPciIoOperationBusMasterCommonBuffer) {
+ DmaOperation = MapOperationBusMasterCommonBuffer;
+ } else {
+ return EFI_INVALID_PARAMETER;
+ }
+ return DmaMap (DmaOperation, HostAddress, NumberOfBytes, DeviceAddress, Mapping);
+}
+
+EFI_STATUS
+PciIoUnmap (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ )
+{
+ return DmaUnmap (Mapping);
+}
+
+/**
+ Allocate pages that are suitable for an EfiPciIoOperationBusMasterCommonBuffer
+ mapping.
+
+ @param[in] This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @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 and
+ EFI_PCI_ATTRIBUTE_MEMORY_CACHED may be used with this
+ function. If any other bits are set, then EFI_UNSUPPORTED
+ is returned. This function ignores this bit mask.
+
+ @retval EFI_SUCCESS The requested memory pages were allocated.
+ @retval EFI_INVALID_PARAMETER HostAddress is NULL.
+ @retval EFI_INVALID_PARAMETER MemoryType is invalid.
+ @retval EFI_UNSUPPORTED Attributes is unsupported.
+ @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
+
+**/
+EFI_STATUS
+PciIoAllocateBuffer (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_ALLOCATE_TYPE Type,
+ IN EFI_MEMORY_TYPE MemoryType,
+ IN UINTN Pages,
+ OUT VOID **HostAddress,
+ IN UINT64 Attributes
+ )
+{
+ if (Attributes &
+ (~(EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE |
+ EFI_PCI_ATTRIBUTE_MEMORY_CACHED ))) {
+ return EFI_UNSUPPORTED;
+ }
+
+ return DmaAllocateBuffer (MemoryType, Pages, HostAddress);
+}
+
+
+EFI_STATUS
+PciIoFreeBuffer (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ IN VOID *HostAddress
+ )
+{
+ return DmaFreeBuffer (Pages, HostAddress);
+}
+
+
+EFI_STATUS
+PciIoFlush (
+ IN EFI_PCI_IO_PROTOCOL *This
+ )
+{
+ return EFI_SUCCESS;
+}
+
+/**
+ Retrieves this PCI controller's current PCI bus number, device number, and function number.
+
+ @param[in] This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param[out] SegmentNumber The PCI controller's current PCI segment number.
+ @param[out] BusNumber The PCI controller's current PCI bus number.
+ @param[out] DeviceNumber The PCI controller's current PCI device number.
+ @param[out] FunctionNumber The PCI controller’s current PCI function number.
+
+ @retval EFI_SUCCESS The PCI controller location was returned.
+ @retval EFI_INVALID_PARAMETER At least one out of the four output parameters is
+ a NULL pointer.
+**/
+EFI_STATUS
+PciIoGetLocation (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ OUT UINTN *SegmentNumber,
+ OUT UINTN *BusNumber,
+ OUT UINTN *DeviceNumber,
+ OUT UINTN *FunctionNumber
+ )
+{
+ EFI_PCI_IO_PRIVATE_DATA *Private = EFI_PCI_IO_PRIVATE_DATA_FROM_THIS (This);
+
+ if ((SegmentNumber == NULL) || (BusNumber == NULL) ||
+ (DeviceNumber == NULL) || (FunctionNumber == NULL) ) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ *SegmentNumber = Private->Segment;
+ *BusNumber = 0xff;
+ *DeviceNumber = 0;
+ *FunctionNumber = 0;
+
+ return EFI_SUCCESS;
+}
+
+/**
+ Performs an operation on the attributes that this PCI controller supports.
+
+ The operations include getting the set of supported attributes, retrieving
+ the current attributes, setting the current attributes, enabling attributes,
+ and disabling attributes.
+
+ @param[in] This A pointer to the EFI_PCI_IO_PROTOCOL instance.
+ @param[in] Operation The operation to perform on the attributes for this
+ PCI controller.
+ @param[in] Attributes The mask of attributes that are used for Set,
+ Enable and Disable operations.
+ @param[out] Result A pointer to the result mask of attributes that are
+ returned for the Get and Supported operations. This
+ is an optional parameter that may be NULL for the
+ Set, Enable, and Disable operations.
+
+ @retval EFI_SUCCESS The operation on the PCI controller's
+ attributes was completed. If the operation
+ was Get or Supported, then the attribute mask
+ is returned in Result.
+ @retval EFI_INVALID_PARAMETER Operation is greater than or equal to
+ EfiPciIoAttributeOperationMaximum.
+ @retval EFI_INVALID_PARAMETER Operation is Get and Result is NULL.
+ @retval EFI_INVALID_PARAMETER Operation is Supported and Result is NULL.
+
+**/
+EFI_STATUS
+PciIoAttributes (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
+ IN UINT64 Attributes,
+ OUT UINT64 *Result OPTIONAL
+ )
+{
+ switch (Operation) {
+ case EfiPciIoAttributeOperationGet:
+ case EfiPciIoAttributeOperationSupported:
+ if (Result == NULL) {
+ return EFI_INVALID_PARAMETER;
+ }
+ //
+ // We are not a real PCI device so just say things we kind of do
+ //
+ *Result = EFI_PCI_DEVICE_ENABLE;
+ break;
+
+ case EfiPciIoAttributeOperationSet:
+ case EfiPciIoAttributeOperationEnable:
+ case EfiPciIoAttributeOperationDisable:
+ if (Attributes & (~EFI_PCI_DEVICE_ENABLE)) {
+ return EFI_UNSUPPORTED;
+ }
+ // Since we are not a real PCI device no enable/set or disable operations exist.
+ return EFI_SUCCESS;
+
+ default:
+ return EFI_INVALID_PARAMETER;
+ };
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+PciIoGetBarAttributes (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN UINT8 BarIndex,
+ OUT UINT64 *Supports, OPTIONAL
+ OUT VOID **Resources OPTIONAL
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+EFI_STATUS
+PciIoSetBarAttributes (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN UINT64 Attributes,
+ IN UINT8 BarIndex,
+ IN OUT UINT64 *Offset,
+ IN OUT UINT64 *Length
+ )
+{
+ ASSERT (FALSE);
+ return EFI_UNSUPPORTED;
+}
+
+EFI_PCI_IO_PROTOCOL PciIoTemplate =
+{
+ PciIoPollMem,
+ PciIoPollIo,
+ { PciIoMemRead, PciIoMemWrite },
+ { PciIoIoRead, PciIoIoWrite },
+ { PciIoPciRead, PciIoPciWrite },
+ PciIoCopyMem,
+ PciIoMap,
+ PciIoUnmap,
+ PciIoAllocateBuffer,
+ PciIoFreeBuffer,
+ PciIoFlush,
+ PciIoGetLocation,
+ PciIoAttributes,
+ PciIoGetBarAttributes,
+ PciIoSetBarAttributes,
+ 0,
+ 0
+};
+
+EFI_STATUS
+EFIAPI
+PciEmulationEntryPoint (
+ IN EFI_HANDLE ImageHandle,
+ IN EFI_SYSTEM_TABLE *SystemTable
+ )
+{
+ EFI_STATUS Status;
+ EFI_HANDLE Handle;
+ EFI_PCI_IO_PRIVATE_DATA *Private;
+ //UINT8 CapabilityLength;
+ //UINT8 PhysicalPorts;
+ //UINTN Count;
+
+ //Configure USB host
+ ConfigureUSBHost();
+
+ // Create a private structure
+ Private = AllocatePool(sizeof(EFI_PCI_IO_PRIVATE_DATA));
+ if (Private == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ return Status;
+ }
+
+ Private->Signature = EFI_PCI_IO_PRIVATE_DATA_SIGNATURE; // Fill in signature
+ Private->RootBridge.Signature = PCI_ROOT_BRIDGE_SIGNATURE; // Fake Root Bridge structure needs a signature too
+ Private->RootBridge.MemoryStart = 0xF72C0000; // Get the USB capability register base
+ Private->Segment = 0; // Default to segment zero
+ Private->RootBridge.MemorySize = 0;
+
+#if 0
+ // Find out the capability register length and number of physical ports.
+ CapabilityLength = MmioRead8(Private->RootBridge.MemoryStart);
+ PhysicalPorts = (MmioRead32 (Private->RootBridge.MemoryStart + 0x4)) & 0x0000000F;
+
+ // Calculate the total size of the USB registers.
+ Private->RootBridge.MemorySize = CapabilityLength + (HOST_CONTROLLER_OPERATION_REG_SIZE + ((4 * PhysicalPorts) - 1));
+
+ // Enable Port Power bit in Port status and control registers in EHCI register space.
+ // Port Power Control (PPC) bit in the HCSPARAMS register is already set which indicates
+ // host controller implementation includes port power control.
+ for (Count = 0; Count < PhysicalPorts; Count++) {
+ MmioOr32 ((Private->RootBridge.MemoryStart + CapabilityLength + HOST_CONTROLLER_OPERATION_REG_SIZE + 4*Count), 0x00001000);
+ }
+
+#endif
+ // Create fake PCI config space.
+ Private->ConfigSpace = AllocateZeroPool(sizeof(PCI_TYPE00));
+ if (Private->ConfigSpace == NULL) {
+ Status = EFI_OUT_OF_RESOURCES;
+ FreePool(Private);
+ return Status;
+ }
+
+ // Configure PCI config space
+ Private->ConfigSpace->Hdr.VendorId = 0xFFFF; // Invalid vendor Id as it is not an actual device.
+ Private->ConfigSpace->Hdr.DeviceId = 0x0000; // Not relevant as the vendor id is not valid.
+ Private->ConfigSpace->Hdr.ClassCode[0] = 0x80;
+ Private->ConfigSpace->Hdr.ClassCode[1] = 0x03;
+ Private->ConfigSpace->Hdr.ClassCode[2] = 0x0C;
+ Private->ConfigSpace->Device.Bar[0] = Private->RootBridge.MemoryStart;
+
+ Handle = NULL;
+
+ // Unique device path.
+ CopyMem(&Private->DevicePath, &PciIoDevicePathTemplate, sizeof(PciIoDevicePathTemplate));
+ Private->DevicePath.AcpiDevicePath.UID = 0;
+
+ // Copy protocol structure
+ CopyMem(&Private->PciIoProtocol, &PciIoTemplate, sizeof(PciIoTemplate));
+
+ Status = gBS->InstallMultipleProtocolInterfaces(&Handle,
+ &gEfiPciIoProtocolGuid, &Private->PciIoProtocol,
+ &gEfiDevicePathProtocolGuid, &Private->DevicePath,
+ NULL);
+ if (EFI_ERROR(Status)) {
+ DEBUG((EFI_D_ERROR, "PciEmulationEntryPoint InstallMultipleProtocolInterfaces() failed.\n"));
+ }
+
+ return Status;
+}
+
diff --git a/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.h b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.h new file mode 100644 index 000000000..159192c98 --- /dev/null +++ b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.h @@ -0,0 +1,287 @@ +/** @file
+
+ Copyright (c) 2008 - 2009, Apple Inc. 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 <Library/BaseLib.h>
+#include <Library/BaseMemoryLib.h>
+#include <Library/DebugLib.h>
+#include <Library/DxeServicesTableLib.h>
+#include <Library/IoLib.h>
+#include <Library/MemoryAllocationLib.h>
+#include <Library/PciLib.h>
+#include <Library/UefiLib.h>
+#include <Library/UefiBootServicesTableLib.h>
+#include <Library/DmaLib.h>
+
+#include <Protocol/EmbeddedExternalDevice.h>
+#include <Protocol/DevicePath.h>
+#include <Protocol/PciIo.h>
+#include <Protocol/PciRootBridgeIo.h>
+#include <Protocol/PciHostBridgeResourceAllocation.h>
+#include <Library/TimerLib.h>
+
+#include <IndustryStandard/Pci22.h>
+#include <IndustryStandard/Acpi.h>
+
+
+#define EFI_RESOURCE_NONEXISTENT 0xFFFFFFFFFFFFFFFFULL
+#define EFI_RESOURCE_LESS 0xFFFFFFFFFFFFFFFEULL
+#define EFI_RESOURCE_SATISFIED 0x0000000000000000ULL
+
+
+typedef struct {
+ ACPI_HID_DEVICE_PATH AcpiDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
+} EFI_PCI_ROOT_BRIDGE_DEVICE_PATH;
+
+
+#define ACPI_CONFIG_IO 0
+#define ACPI_CONFIG_MMIO 1
+#define ACPI_CONFIG_BUS 2
+
+typedef struct {
+ EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR Desc[3];
+ EFI_ACPI_END_TAG_DESCRIPTOR EndDesc;
+} ACPI_CONFIG_INFO;
+
+
+#define PCI_ROOT_BRIDGE_SIGNATURE SIGNATURE_32 ('P', 'c', 'i', 'F')
+
+typedef struct {
+ UINT32 Signature;
+ EFI_HANDLE Handle;
+ EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL Io;
+ EFI_PCI_ROOT_BRIDGE_DEVICE_PATH DevicePath;
+
+ UINT8 StartBus;
+ UINT8 EndBus;
+ UINT16 Type;
+ UINT32 MemoryStart;
+ UINT32 MemorySize;
+ UINTN IoOffset;
+ UINT32 IoStart;
+ UINT32 IoSize;
+ UINT64 PciAttributes;
+
+ ACPI_CONFIG_INFO *Config;
+
+} PCI_ROOT_BRIDGE;
+
+
+#define INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS(a) CR (a, PCI_ROOT_BRIDGE, Io, PCI_ROOT_BRIDGE_SIGNATURE)
+
+
+typedef union {
+ UINT8 volatile *buf;
+ UINT8 volatile *ui8;
+ UINT16 volatile *ui16;
+ UINT32 volatile *ui32;
+ UINT64 volatile *ui64;
+ UINTN volatile ui;
+} PTR;
+
+
+
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoPollMem (
+ 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
+PciRootBridgeIoPollIo (
+ 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
+PciRootBridgeIoMemRead (
+ 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
+PciRootBridgeIoMemWrite (
+ 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
+PciRootBridgeIoIoRead (
+ 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
+PciRootBridgeIoIoWrite (
+ 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
+PciRootBridgeIoCopyMem (
+ 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
+EFIAPI
+PciRootBridgeIoPciRead (
+ 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
+PciRootBridgeIoPciWrite (
+ 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
+PciRootBridgeIoMap (
+ 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
+PciRootBridgeIoUnmap (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN VOID *Mapping
+ );
+
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoAllocateBuffer (
+ 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
+PciRootBridgeIoFreeBuffer (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINTN Pages,
+ OUT VOID *HostAddress
+ );
+
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoFlush (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This
+ );
+
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoGetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT UINT64 *Supported,
+ OUT UINT64 *Attributes
+ );
+
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoSetAttributes (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ IN UINT64 Attributes,
+ IN OUT UINT64 *ResourceBase,
+ IN OUT UINT64 *ResourceLength
+ );
+
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoConfiguration (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *This,
+ OUT VOID **Resources
+ );
+
+//
+// Private Function Prototypes
+//
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoMemRW (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINTN Count,
+ IN BOOLEAN InStrideFlag,
+ IN PTR In,
+ IN BOOLEAN OutStrideFlag,
+ OUT PTR Out
+ );
+
+BOOLEAN
+PciIoMemAddressValid (
+ IN EFI_PCI_IO_PROTOCOL *This,
+ IN UINT64 Address
+ );
+
+EFI_STATUS
+EmulatePciIoForEhci (
+ INTN MvPciIfMaxIf
+ );
+
+#endif
+
diff --git a/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.inf b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.inf new file mode 100644 index 000000000..395535bfb --- /dev/null +++ b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciEmulation.inf @@ -0,0 +1,53 @@ +/** @file
+
+ Copyright (c) 2009, Apple Inc. 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 = PciEmulation
+ FILE_GUID = b820c03c-07b2-44e2-92b3-b3beff6dd938
+ MODULE_TYPE = DXE_DRIVER
+ VERSION_STRING = 1.0
+
+ ENTRY_POINT = PciEmulationEntryPoint
+
+[Sources.common]
+ PciRootBridgeIo.c
+ PciEmulation.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ IntelFrameworkPkg/IntelFrameworkPkg.dec
+ ArmPkg/ArmPkg.dec
+ EmbeddedPkg/EmbeddedPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ DxeServicesTableLib
+ UefiLib
+ UefiBootServicesTableLib
+ UefiDriverEntryPoint
+ UefiRuntimeServicesTableLib
+ IoLib
+ DmaLib
+ TimerLib
+
+[Protocols]
+ gEfiPciRootBridgeIoProtocolGuid
+ gEfiDevicePathProtocolGuid
+ gEfiPciHostBridgeResourceAllocationProtocolGuid
+ gEfiPciIoProtocolGuid
+
+[Depex]
+ gEfiMetronomeArchProtocolGuid
diff --git a/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciRootBridgeIo.c b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciRootBridgeIo.c new file mode 100644 index 000000000..e8635ed88 --- /dev/null +++ b/HisiPkg/HiKeyPkg/Drivers/PciEmulation/PciRootBridgeIo.c @@ -0,0 +1,306 @@ +/** @file
+
+ Copyright (c) 2008 - 2009, Apple Inc. 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 "PciEmulation.h"
+
+BOOLEAN
+PciRootBridgeMemAddressValid (
+ IN PCI_ROOT_BRIDGE *Private,
+ IN UINT64 Address
+ )
+{
+ if ((Address >= Private->MemoryStart) && (Address < (Private->MemoryStart + Private->MemorySize))) {
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+EFI_STATUS
+PciRootBridgeIoMemRW (
+ IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH Width,
+ IN UINTN Count,
+ IN BOOLEAN InStrideFlag,
+ IN PTR In,
+ IN BOOLEAN OutStrideFlag,
+ OUT PTR Out
+ )
+{
+ UINTN Stride;
+ UINTN InStride;
+ UINTN OutStride;
+
+
+ Width = (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) (Width & 0x03);
+ Stride = (UINTN)1 << Width;
+ InStride = InStrideFlag ? Stride : 0;
+ OutStride = OutStrideFlag ? Stride : 0;
+
+ //
+ // Loop for each iteration and move the data
+ //
+ switch (Width) {
+ case EfiPciWidthUint8:
+ for (;Count > 0; Count--, In.buf += InStride, Out.buf += OutStride) {
+ *In.ui8 = *Out.ui8;
+ }
+ break;
+ case EfiPciWidthUint16:
+ for (;Count > 0; Count--, In.buf += InStride, Out.buf += OutStride) {
+ *In.ui16 = *Out.ui16;
+ }
+ break;
+ case EfiPciWidthUint32:
+ for (;Count > 0; Count--, In.buf += InStride, Out.buf += OutStride) {
+ *In.ui32 = *Out.ui32;
+ }
+ break;
+ default:
+ return EFI_INVALID_PARAMETER;
+ }
+
+ return EFI_SUCCESS;
+}
+
+EFI_STATUS
+PciRootBridgeIoPciRW (
+ 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
+ )
+{
+ return EFI_SUCCESS;
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Width Signifies the width of the memory operations.
+ @param Address The base address of the memory operations.
+ @param Count The number of memory operations to perform.
+ @param 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_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoMemRead (
+ 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 *Private;
+ UINTN AlignMask;
+ PTR In;
+ PTR Out;
+
+ if ( Buffer == NULL ) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Private = INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ if (!PciRootBridgeMemAddressValid (Private, Address)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ AlignMask = (1 << (Width & 0x03)) - 1;
+ if (Address & AlignMask) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ In.buf = Buffer;
+ Out.buf = (VOID *)(UINTN) Address;
+
+ switch (Width) {
+ case EfiPciWidthUint8:
+ case EfiPciWidthUint16:
+ case EfiPciWidthUint32:
+ case EfiPciWidthUint64:
+ return PciRootBridgeIoMemRW (Width, Count, TRUE, In, TRUE, Out);
+
+ case EfiPciWidthFifoUint8:
+ case EfiPciWidthFifoUint16:
+ case EfiPciWidthFifoUint32:
+ case EfiPciWidthFifoUint64:
+ return PciRootBridgeIoMemRW (Width, Count, TRUE, In, FALSE, Out);
+
+ case EfiPciWidthFillUint8:
+ case EfiPciWidthFillUint16:
+ case EfiPciWidthFillUint32:
+ case EfiPciWidthFillUint64:
+ return PciRootBridgeIoMemRW (Width, Count, FALSE, In, TRUE, Out);
+
+ default:
+ break;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Width Signifies the width of the memory operations.
+ @param Address The base address of the memory operations.
+ @param Count The number of memory operations to perform.
+ @param 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_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoMemWrite (
+ 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 *Private;
+ UINTN AlignMask;
+ PTR In;
+ PTR Out;
+
+ if ( Buffer == NULL ) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ Private = INSTANCE_FROM_PCI_ROOT_BRIDGE_IO_THIS (This);
+
+ if (!PciRootBridgeMemAddressValid (Private, Address)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ AlignMask = (1 << (Width & 0x03)) - 1;
+ if (Address & AlignMask) {
+ return EFI_INVALID_PARAMETER;
+ }
+
+ In.buf = (VOID *)(UINTN) Address;
+ Out.buf = Buffer;
+
+ switch (Width) {
+ case EfiPciWidthUint8:
+ case EfiPciWidthUint16:
+ case EfiPciWidthUint32:
+ case EfiPciWidthUint64:
+ return PciRootBridgeIoMemRW (Width, Count, TRUE, In, TRUE, Out);
+
+ case EfiPciWidthFifoUint8:
+ case EfiPciWidthFifoUint16:
+ case EfiPciWidthFifoUint32:
+ case EfiPciWidthFifoUint64:
+ return PciRootBridgeIoMemRW (Width, Count, FALSE, In, TRUE, Out);
+
+ case EfiPciWidthFillUint8:
+ case EfiPciWidthFillUint16:
+ case EfiPciWidthFillUint32:
+ case EfiPciWidthFillUint64:
+ return PciRootBridgeIoMemRW (Width, Count, TRUE, In, FALSE, Out);
+
+ default:
+ break;
+ }
+
+ return EFI_INVALID_PARAMETER;
+}
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Width Signifies the width of the memory operations.
+ @param Address The base address of the memory operations.
+ @param Count The number of memory operations to perform.
+ @param 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_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoPciRead (
+ 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;
+ }
+
+ return PciRootBridgeIoPciRW (This, FALSE, Width, Address, Count, Buffer);
+}
+
+
+
+/**
+ Enables a PCI driver to access PCI controller registers in the PCI root bridge memory space.
+
+ @param This A pointer to the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.
+ @param Width Signifies the width of the memory operations.
+ @param Address The base address of the memory operations.
+ @param Count The number of memory operations to perform.
+ @param 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_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
+ @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
+
+**/
+EFI_STATUS
+EFIAPI
+PciRootBridgeIoPciWrite (
+ 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;
+ }
+
+ return PciRootBridgeIoPciRW (This, TRUE, Width, Address, Count, Buffer);
+}
+
+
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