diff options
Diffstat (limited to 'IntelFrameworkPkg/Library/DxeIoLibCpuIo/IoLib.c')
| -rw-r--r-- | IntelFrameworkPkg/Library/DxeIoLibCpuIo/IoLib.c | 64 |
1 files changed, 22 insertions, 42 deletions
diff --git a/IntelFrameworkPkg/Library/DxeIoLibCpuIo/IoLib.c b/IntelFrameworkPkg/Library/DxeIoLibCpuIo/IoLib.c index ff0e323291..c01555974f 100644 --- a/IntelFrameworkPkg/Library/DxeIoLibCpuIo/IoLib.c +++ b/IntelFrameworkPkg/Library/DxeIoLibCpuIo/IoLib.c @@ -3,7 +3,7 @@ The implementation of I/O operation for this library instance
are based on EFI_CPU_IO_PROTOCOL.
- Copyright (c) 2006, Intel Corporation<BR>
+ Copyright (c) 2006-2010, Intel Corporation<BR>
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
@@ -22,8 +22,7 @@ //
// Globle varible to cache pointer to CpuIo protocol.
//
-EFI_CPU_IO_PROTOCOL *mCpuIo = NULL;
-EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL *mPciRootBridgeIo = NULL;
+EFI_CPU_IO_PROTOCOL *mCpuIo = NULL;
/**
The constructor function caches the pointer to CpuIo protocol.
@@ -44,12 +43,9 @@ IoLibConstructor ( IN EFI_SYSTEM_TABLE *SystemTable
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
- Status = gBS->LocateProtocol (&gEfiPciRootBridgeIoProtocolGuid, NULL, (VOID **) &mPciRootBridgeIo);
- if (EFI_ERROR (Status)) {
- Status = gBS->LocateProtocol (&gEfiCpuIoProtocolGuid, NULL, (VOID **) &mCpuIo);
- }
+ Status = gBS->LocateProtocol (&gEfiCpuIoProtocolGuid, NULL, (VOID **) &mCpuIo);
ASSERT_EFI_ERROR (Status);
return Status;
@@ -72,18 +68,14 @@ IoLibConstructor ( UINT64
EFIAPI
IoReadWorker (
- IN UINTN Port,
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width
+ IN UINTN Port,
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width
)
{
EFI_STATUS Status;
UINT64 Data;
- if (mPciRootBridgeIo != NULL) {
- Status = mPciRootBridgeIo->Io.Read (mPciRootBridgeIo, (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width, Port, 1, &Data);
- } else {
- Status = mCpuIo->Io.Read (mCpuIo, Width, Port, 1, &Data);
- }
+ Status = mCpuIo->Io.Read (mCpuIo, Width, Port, 1, &Data);
ASSERT_EFI_ERROR (Status);
return Data;
@@ -107,18 +99,14 @@ IoReadWorker ( UINT64
EFIAPI
IoWriteWorker (
- IN UINTN Port,
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
- IN UINT64 Data
+ IN UINTN Port,
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Data
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
- if (mPciRootBridgeIo != NULL) {
- Status = mPciRootBridgeIo->Io.Write (mPciRootBridgeIo, (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width, Port, 1, &Data);
- } else {
- Status = mCpuIo->Io.Write (mCpuIo, Width, Port, 1, &Data);
- }
+ Status = mCpuIo->Io.Write (mCpuIo, Width, Port, 1, &Data);
ASSERT_EFI_ERROR (Status);
return Data;
@@ -141,18 +129,14 @@ IoWriteWorker ( UINT64
EFIAPI
MmioReadWorker (
- IN UINTN Address,
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width
+ IN UINTN Address,
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width
)
{
- EFI_STATUS Status;
- UINT64 Data;
+ EFI_STATUS Status;
+ UINT64 Data;
- if (mPciRootBridgeIo != NULL) {
- Status = mPciRootBridgeIo->Mem.Read (mPciRootBridgeIo, (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width, Address, 1, &Data);
- } else {
- Status = mCpuIo->Mem.Read (mCpuIo, Width, Address, 1, &Data);
- }
+ Status = mCpuIo->Mem.Read (mCpuIo, Width, Address, 1, &Data);
ASSERT_EFI_ERROR (Status);
return Data;
@@ -176,18 +160,14 @@ MmioReadWorker ( UINT64
EFIAPI
MmioWriteWorker (
- IN UINTN Address,
- IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
- IN UINT64 Data
+ IN UINTN Address,
+ IN EFI_CPU_IO_PROTOCOL_WIDTH Width,
+ IN UINT64 Data
)
{
- EFI_STATUS Status;
+ EFI_STATUS Status;
- if (mPciRootBridgeIo != NULL) {
- Status = mPciRootBridgeIo->Mem.Write (mPciRootBridgeIo, (EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_WIDTH) Width, Address, 1, &Data);
- } else {
- Status = mCpuIo->Mem.Write (mCpuIo, Width, Address, 1, &Data);
- }
+ Status = mCpuIo->Mem.Write (mCpuIo, Width, Address, 1, &Data);
ASSERT_EFI_ERROR (Status);
return Data;
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