diff options
Diffstat (limited to 'ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/PciRootBridgeIo.c')
| -rwxr-xr-x | ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/PciRootBridgeIo.c | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/PciRootBridgeIo.c b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/PciRootBridgeIo.c new file mode 100755 index 000000000..f1eaceff2 --- /dev/null +++ b/ArmPlatformPkg/ArmJunoPkg/Drivers/ArmJunoDxe/PciRootBridgeIo.c @@ -0,0 +1,299 @@ +/** @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.Buffer += InStride, Out.Buffer += OutStride) {
+ *In.Ui8 = *Out.Ui8;
+ }
+ break;
+ case EfiPciWidthUint16:
+ for (;Count > 0; Count--, In.Buffer += InStride, Out.Buffer += OutStride) {
+ *In.Ui16 = *Out.Ui16;
+ }
+ break;
+ case EfiPciWidthUint32:
+ for (;Count > 0; Count--, In.Buffer += InStride, Out.Buffer += 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.Buffer = Buffer;
+ Out.Buffer = (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.Buffer = (VOID *)(UINTN) Address;
+ Out.Buffer = 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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