mirror of https://github.com/acidanthera/audk.git
846 lines
26 KiB
C
846 lines
26 KiB
C
/*++
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation
|
|
All rights reserved. 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.
|
|
|
|
Module Name:
|
|
|
|
DeviceIo.c
|
|
|
|
Abstract:
|
|
|
|
EFI PC-AT PCI Device IO driver
|
|
|
|
--*/
|
|
#include "PcatPciRootBridge.h"
|
|
#include "DeviceIo.h"
|
|
|
|
EFI_STATUS
|
|
DeviceIoConstructor (
|
|
IN EFI_HANDLE Handle,
|
|
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *PciRootBridgeIo,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
|
IN UINT16 PrimaryBus,
|
|
IN UINT16 SubordinateBus
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Initialize and install a Device IO protocol on a empty device path handle.
|
|
|
|
Arguments:
|
|
|
|
Handle - Handle of PCI RootBridge IO instance
|
|
PciRootBridgeIo - PCI RootBridge IO instance
|
|
DevicePath - Device Path of PCI RootBridge IO instance
|
|
PrimaryBus - Primary Bus
|
|
SubordinateBus - Subordinate Bus
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - This driver is added to ControllerHandle.
|
|
EFI_ALREADY_STARTED - This driver is already running on ControllerHandle.
|
|
Others - This driver does not support this device.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
//
|
|
// Initialize the Device IO device instance.
|
|
//
|
|
Private = AllocateZeroPool (sizeof (DEVICE_IO_PRIVATE_DATA));
|
|
if (Private == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
Private->Signature = DEVICE_IO_PRIVATE_DATA_SIGNATURE;
|
|
Private->Handle = Handle;
|
|
Private->PciRootBridgeIo = PciRootBridgeIo;
|
|
Private->DevicePath = DevicePath;
|
|
Private->PrimaryBus = PrimaryBus;
|
|
Private->SubordinateBus = SubordinateBus;
|
|
|
|
Private->DeviceIo.Mem.Read = DeviceIoMemRead;
|
|
Private->DeviceIo.Mem.Write = DeviceIoMemWrite;
|
|
Private->DeviceIo.Io.Read = DeviceIoIoRead;
|
|
Private->DeviceIo.Io.Write = DeviceIoIoWrite;
|
|
Private->DeviceIo.Pci.Read = DeviceIoPciRead;
|
|
Private->DeviceIo.Pci.Write = DeviceIoPciWrite;
|
|
Private->DeviceIo.PciDevicePath = DeviceIoPciDevicePath;
|
|
Private->DeviceIo.Map = DeviceIoMap;
|
|
Private->DeviceIo.Unmap = DeviceIoUnmap;
|
|
Private->DeviceIo.AllocateBuffer = DeviceIoAllocateBuffer;
|
|
Private->DeviceIo.Flush = DeviceIoFlush;
|
|
Private->DeviceIo.FreeBuffer = DeviceIoFreeBuffer;
|
|
|
|
//
|
|
// Install protocol interfaces for the Device IO device.
|
|
//
|
|
Status = gBS->InstallMultipleProtocolInterfaces (
|
|
&Private->Handle,
|
|
&gEfiDeviceIoProtocolGuid,
|
|
&Private->DeviceIo,
|
|
NULL
|
|
);
|
|
ASSERT_EFI_ERROR (Status);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoMemRead (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform reading memory mapped I/O space of device.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to EFI_DEVICE_IO protocol instance.
|
|
Width - Width of I/O operations.
|
|
Address - The base address of I/O operations.
|
|
Count - The number of I/O operations to perform.
|
|
Bytes moves is Width size * Count, starting at Address.
|
|
Buffer - The destination buffer to store results.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The data was read from the device.
|
|
EFI_INVALID_PARAMETER - Width is invalid.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Width > MMIO_COPY_UINT64) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
if (Width >= MMIO_COPY_UINT8) {
|
|
Width = Width - MMIO_COPY_UINT8;
|
|
Status = Private->PciRootBridgeIo->CopyMem (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
(UINT64)(UINTN) Buffer,
|
|
Address,
|
|
Count
|
|
);
|
|
} else {
|
|
Status = Private->PciRootBridgeIo->Mem.Read (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoMemWrite (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform writing memory mapped I/O space of device.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to EFI_DEVICE_IO protocol instance.
|
|
Width - Width of I/O operations.
|
|
Address - The base address of I/O operations.
|
|
Count - The number of I/O operations to perform.
|
|
Bytes moves is Width size * Count, starting at Address.
|
|
Buffer - The source buffer of data to be written.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The data was written to the device.
|
|
EFI_INVALID_PARAMETER - Width is invalid.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Width > MMIO_COPY_UINT64) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
if (Width >= MMIO_COPY_UINT8) {
|
|
Width = Width - MMIO_COPY_UINT8;
|
|
Status = Private->PciRootBridgeIo->CopyMem (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
(UINT64)(UINTN) Buffer,
|
|
Count
|
|
);
|
|
} else {
|
|
Status = Private->PciRootBridgeIo->Mem.Write (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoIoRead (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform reading I/O space of device.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to EFI_DEVICE_IO protocol instance.
|
|
Width - Width of I/O operations.
|
|
Address - The base address of I/O operations.
|
|
Count - The number of I/O operations to perform.
|
|
Bytes moves is Width size * Count, starting at Address.
|
|
Buffer - The destination buffer to store results.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The data was read from the device.
|
|
EFI_INVALID_PARAMETER - Width is invalid.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Width >= MMIO_COPY_UINT8) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = Private->PciRootBridgeIo->Io.Read (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoIoWrite (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform writing I/O space of device.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to EFI_DEVICE_IO protocol instance.
|
|
Width - Width of I/O operations.
|
|
Address - The base address of I/O operations.
|
|
Count - The number of I/O operations to perform.
|
|
Bytes moves is Width size * Count, starting at Address.
|
|
Buffer - The source buffer of data to be written.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The data was written to the device.
|
|
EFI_INVALID_PARAMETER - Width is invalid.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Width >= MMIO_COPY_UINT8) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = Private->PciRootBridgeIo->Io.Write (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoPciRead (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform reading PCI configuration space of device
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to EFI_DEVICE_IO protocol instance.
|
|
Width - Width of I/O operations.
|
|
Address - The base address of I/O operations.
|
|
Count - The number of I/O operations to perform.
|
|
Bytes moves is Width size * Count, starting at Address.
|
|
Buffer - The destination buffer to store results.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The data was read from the device.
|
|
EFI_INVALID_PARAMETER - Width is invalid.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Width < 0 || Width >= MMIO_COPY_UINT8) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = Private->PciRootBridgeIo->Pci.Read (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoPciWrite (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_WIDTH Width,
|
|
IN UINT64 Address,
|
|
IN UINTN Count,
|
|
IN OUT VOID *Buffer
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform writing PCI configuration space of device.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to EFI_DEVICE_IO protocol instance.
|
|
Width - Width of I/O operations.
|
|
Address - The base address of I/O operations.
|
|
Count - The number of I/O operations to perform.
|
|
Bytes moves is Width size * Count, starting at Address.
|
|
Buffer - The source buffer of data to be written.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The data was written to the device.
|
|
EFI_INVALID_PARAMETER - Width is invalid.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Width < 0 || Width >= MMIO_COPY_UINT8) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
Status = Private->PciRootBridgeIo->Pci.Write (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width,
|
|
Address,
|
|
Count,
|
|
Buffer
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_DEVICE_PATH_PROTOCOL *
|
|
AppendPciDevicePath (
|
|
IN DEVICE_IO_PRIVATE_DATA *Private,
|
|
IN UINT8 Bus,
|
|
IN UINT8 Device,
|
|
IN UINT8 Function,
|
|
IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
|
|
IN OUT UINT16 *BridgePrimaryBus,
|
|
IN OUT UINT16 *BridgeSubordinateBus
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Append a PCI device path node to another device path.
|
|
|
|
Arguments:
|
|
|
|
Private - A pointer to DEVICE_IO_PRIVATE_DATA instance.
|
|
Bus - PCI bus number of the device.
|
|
Device - PCI device number of the device.
|
|
Function - PCI function number of the device.
|
|
DevicePath - Original device path which will be appended a PCI device path node.
|
|
BridgePrimaryBus - Primary bus number of the bridge.
|
|
BridgeSubordinateBus - Subordinate bus number of the bridge.
|
|
|
|
Returns:
|
|
|
|
Pointer to the appended PCI device path.
|
|
|
|
--*/
|
|
{
|
|
UINT16 ThisBus;
|
|
UINT8 ThisDevice;
|
|
UINT8 ThisFunc;
|
|
UINT64 Address;
|
|
PCI_TYPE01 PciBridge;
|
|
PCI_TYPE01 *PciPtr;
|
|
EFI_DEVICE_PATH_PROTOCOL *ReturnDevicePath;
|
|
PCI_DEVICE_PATH PciNode;
|
|
|
|
PciPtr = &PciBridge;
|
|
for (ThisBus = *BridgePrimaryBus; ThisBus <= *BridgeSubordinateBus; ThisBus++) {
|
|
for (ThisDevice = 0; ThisDevice <= PCI_MAX_DEVICE; ThisDevice++) {
|
|
for (ThisFunc = 0; ThisFunc <= PCI_MAX_FUNC; ThisFunc++) {
|
|
Address = EFI_PCI_ADDRESS (ThisBus, ThisDevice, ThisFunc, 0);
|
|
ZeroMem (PciPtr, sizeof (PCI_TYPE01));
|
|
Private->DeviceIo.Pci.Read (
|
|
&Private->DeviceIo,
|
|
IO_UINT32,
|
|
Address,
|
|
1,
|
|
&(PciPtr->Hdr.VendorId)
|
|
);
|
|
if ((PciPtr->Hdr.VendorId == 0xffff) && (ThisFunc == 0)) {
|
|
break;
|
|
}
|
|
if (PciPtr->Hdr.VendorId == 0xffff) {
|
|
continue;
|
|
}
|
|
|
|
Private->DeviceIo.Pci.Read (
|
|
&Private->DeviceIo,
|
|
IO_UINT32,
|
|
Address,
|
|
sizeof (PCI_TYPE01) / sizeof (UINT32),
|
|
PciPtr
|
|
);
|
|
if (IS_PCI_BRIDGE (PciPtr)) {
|
|
if (Bus >= PciPtr->Bridge.SecondaryBus && Bus <= PciPtr->Bridge.SubordinateBus) {
|
|
|
|
PciNode.Header.Type = HARDWARE_DEVICE_PATH;
|
|
PciNode.Header.SubType = HW_PCI_DP;
|
|
SetDevicePathNodeLength (&PciNode.Header, sizeof (PciNode));
|
|
|
|
PciNode.Device = ThisDevice;
|
|
PciNode.Function = ThisFunc;
|
|
ReturnDevicePath = AppendDevicePathNode (DevicePath, &PciNode.Header);
|
|
|
|
*BridgePrimaryBus = PciPtr->Bridge.SecondaryBus;
|
|
*BridgeSubordinateBus = PciPtr->Bridge.SubordinateBus;
|
|
return ReturnDevicePath;
|
|
}
|
|
}
|
|
|
|
if ((ThisFunc == 0) && ((PciPtr->Hdr.HeaderType & HEADER_TYPE_MULTI_FUNCTION) == 0x0)) {
|
|
//
|
|
// Skip sub functions, this is not a multi function device
|
|
//
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ZeroMem (&PciNode, sizeof (PciNode));
|
|
PciNode.Header.Type = HARDWARE_DEVICE_PATH;
|
|
PciNode.Header.SubType = HW_PCI_DP;
|
|
SetDevicePathNodeLength (&PciNode.Header, sizeof (PciNode));
|
|
PciNode.Device = Device;
|
|
PciNode.Function = Function;
|
|
|
|
ReturnDevicePath = AppendDevicePathNode (DevicePath, &PciNode.Header);
|
|
|
|
*BridgePrimaryBus = 0xffff;
|
|
*BridgeSubordinateBus = 0xffff;
|
|
return ReturnDevicePath;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoPciDevicePath (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN UINT64 Address,
|
|
IN OUT EFI_DEVICE_PATH_PROTOCOL **PciDevicePath
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Provides an EFI Device Path for a PCI device with the given PCI configuration space address.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
|
|
Address - The PCI configuration space address of the device whose Device Path
|
|
is going to be returned.
|
|
PciDevicePath - A pointer to the pointer for the EFI Device Path for PciAddress.
|
|
Memory for the Device Path is allocated from the pool.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The PciDevicePath returns a pointer to a valid EFI Device Path.
|
|
EFI_UNSUPPORTED - The PciAddress does not map to a valid EFI Device Path.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of resources.
|
|
|
|
--*/
|
|
{
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
UINT16 PrimaryBus;
|
|
UINT16 SubordinateBus;
|
|
UINT8 Bus;
|
|
UINT8 Device;
|
|
UINT8 Func;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
Bus = (UINT8) (((UINT32) Address >> 24) & 0xff);
|
|
Device = (UINT8) (((UINT32) Address >> 16) & 0xff);
|
|
Func = (UINT8) (((UINT32) Address >> 8) & 0xff);
|
|
|
|
if (Bus < Private->PrimaryBus || Bus > Private->SubordinateBus) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
*PciDevicePath = Private->DevicePath;
|
|
PrimaryBus = Private->PrimaryBus;
|
|
SubordinateBus = Private->SubordinateBus;
|
|
do {
|
|
*PciDevicePath = AppendPciDevicePath (
|
|
Private,
|
|
Bus,
|
|
Device,
|
|
Func,
|
|
*PciDevicePath,
|
|
&PrimaryBus,
|
|
&SubordinateBus
|
|
);
|
|
if (*PciDevicePath == NULL) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
} while (PrimaryBus != 0xffff);
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoMap (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_IO_OPERATION_TYPE Operation,
|
|
IN EFI_PHYSICAL_ADDRESS *HostAddress,
|
|
IN OUT UINTN *NumberOfBytes,
|
|
OUT EFI_PHYSICAL_ADDRESS *DeviceAddress,
|
|
OUT VOID **Mapping
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Provides the device-specific addresses needed to access system memory.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
|
|
Operation - Indicates if the bus master is going to read or write to system memory.
|
|
HostAddress - The system memory address to map to the device.
|
|
NumberOfBytes - On input the number of bytes to map. On output the number of bytes
|
|
that were mapped.
|
|
DeviceAddress - The resulting map address for the bus master device to use to access the
|
|
hosts HostAddress.
|
|
Mapping - A resulting value to pass to Unmap().
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The range was mapped for the returned NumberOfBytes.
|
|
EFI_INVALID_PARAMETER - The Operation or HostAddress is undefined.
|
|
EFI_UNSUPPORTED - The HostAddress cannot be mapped as a common buffer.
|
|
EFI_DEVICE_ERROR - The system hardware could not map the requested address.
|
|
EFI_OUT_OF_RESOURCES - The request could not be completed due to a lack of resources.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
if (Operation < 0 || Operation > EfiBusMasterCommonBuffer) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if (((UINTN) (*HostAddress) != (*HostAddress)) && Operation == EfiBusMasterCommonBuffer) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
Status = Private->PciRootBridgeIo->Map (
|
|
Private->PciRootBridgeIo,
|
|
(EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_OPERATION) Operation,
|
|
(VOID *) (UINTN) (*HostAddress),
|
|
NumberOfBytes,
|
|
DeviceAddress,
|
|
Mapping
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoUnmap (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN VOID *Mapping
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Completes the Map() operation and releases any corresponding resources.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
|
|
Mapping - The mapping value returned from Map().
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The range was unmapped.
|
|
EFI_DEVICE_ERROR - The data was not committed to the target system memory.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
Status = Private->PciRootBridgeIo->Unmap (
|
|
Private->PciRootBridgeIo,
|
|
Mapping
|
|
);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoAllocateBuffer (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN EFI_ALLOCATE_TYPE Type,
|
|
IN EFI_MEMORY_TYPE MemoryType,
|
|
IN UINTN Pages,
|
|
IN OUT EFI_PHYSICAL_ADDRESS *PhysicalAddress
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Allocates pages that are suitable for an EFIBusMasterCommonBuffer mapping.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
|
|
Type - The type allocation to perform.
|
|
MemoryType - The type of memory to allocate, EfiBootServicesData or
|
|
EfiRuntimeServicesData.
|
|
Pages - The number of pages to allocate.
|
|
PhysicalAddress - A pointer to store the base address of the allocated range.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The requested memory pages were allocated.
|
|
EFI_OUT_OF_RESOURCES - The memory pages could not be allocated.
|
|
EFI_INVALID_PARAMETER - The requested memory type is invalid.
|
|
EFI_UNSUPPORTED - The requested PhysicalAddress is not supported on
|
|
this platform.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
EFI_PHYSICAL_ADDRESS HostAddress;
|
|
|
|
HostAddress = *PhysicalAddress;
|
|
|
|
if ((MemoryType != EfiBootServicesData) && (MemoryType != EfiRuntimeServicesData)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if ((Type >= MaxAllocateType) || (Type < AllocateAnyPages)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
if ((Type == AllocateAddress) && (HostAddress + EFI_PAGES_TO_SIZE (Pages) - 1 > MAX_COMMON_BUFFER)) {
|
|
return EFI_UNSUPPORTED;
|
|
}
|
|
|
|
if ((AllocateAnyPages == Type) || (AllocateMaxAddress == Type && HostAddress > MAX_COMMON_BUFFER)) {
|
|
Type = AllocateMaxAddress;
|
|
HostAddress = MAX_COMMON_BUFFER;
|
|
}
|
|
|
|
Status = gBS->AllocatePages (
|
|
Type,
|
|
MemoryType,
|
|
Pages,
|
|
&HostAddress
|
|
);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
|
|
*PhysicalAddress = HostAddress;
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoFlush (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Flushes any posted write data to the device.
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The buffers were flushed.
|
|
EFI_DEVICE_ERROR - The buffers were not flushed due to a hardware error.
|
|
|
|
--*/
|
|
{
|
|
EFI_STATUS Status;
|
|
DEVICE_IO_PRIVATE_DATA *Private;
|
|
|
|
Private = DEVICE_IO_PRIVATE_DATA_FROM_THIS (This);
|
|
|
|
Status = Private->PciRootBridgeIo->Flush (Private->PciRootBridgeIo);
|
|
|
|
return Status;
|
|
}
|
|
|
|
EFI_STATUS
|
|
EFIAPI
|
|
DeviceIoFreeBuffer (
|
|
IN EFI_DEVICE_IO_PROTOCOL *This,
|
|
IN UINTN Pages,
|
|
IN EFI_PHYSICAL_ADDRESS HostAddress
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Frees pages that were allocated with AllocateBuffer().
|
|
|
|
Arguments:
|
|
|
|
This - A pointer to the EFI_DEVICE_IO_INTERFACE instance.
|
|
Pages - The number of pages to free.
|
|
HostAddress - The base address of the range to free.
|
|
|
|
Returns:
|
|
|
|
EFI_SUCCESS - The requested memory pages were freed.
|
|
EFI_NOT_FOUND - The requested memory pages were not allocated with
|
|
AllocateBuffer().
|
|
EFI_INVALID_PARAMETER - HostAddress is not page aligned or Pages is invalid.
|
|
|
|
--*/
|
|
{
|
|
if (((HostAddress & EFI_PAGE_MASK) != 0) || (Pages <= 0)) {
|
|
return EFI_INVALID_PARAMETER;
|
|
}
|
|
|
|
return gBS->FreePages (HostAddress, Pages);
|
|
}
|